diff options
81 files changed, 8921 insertions, 3155 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 770155a..251a28e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1945,6 +1945,14 @@ M: george@mvista.com L: netdev@vger.kernel.org S: Supported +POWERPC 4xx EMAC DRIVER +P: Eugene Surovegin +M: ebs@ebshome.net +W: http://kernel.ebshome.net/emac/ +L: linuxppc-embedded@ozlabs.org +L: netdev@vger.kernel.org +S: Maintained + PNP SUPPORT P: Adam Belay M: ambx1@neo.rr.com diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index fee8c5c..6d4f9ce 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -1163,38 +1163,74 @@ config IBMVETH be called ibmveth. config IBM_EMAC - bool "IBM PPC4xx EMAC driver support" + tristate "PowerPC 4xx on-chip Ethernet support" depends on 4xx - select CRC32 - ---help--- - This driver supports the IBM PPC4xx EMAC family of on-chip - Ethernet controllers. - -config IBM_EMAC_ERRMSG - bool "Verbose error messages" - depends on IBM_EMAC && BROKEN + help + This driver supports the PowerPC 4xx EMAC family of on-chip + Ethernet controllers. config IBM_EMAC_RXB int "Number of receive buffers" depends on IBM_EMAC - default "128" if IBM_EMAC4 - default "64" + default "128" config IBM_EMAC_TXB int "Number of transmit buffers" depends on IBM_EMAC - default "128" if IBM_EMAC4 - default "8" + default "64" + +config IBM_EMAC_POLL_WEIGHT + int "MAL NAPI polling weight" + depends on IBM_EMAC + default "32" -config IBM_EMAC_FGAP - int "Frame gap" +config IBM_EMAC_RX_COPY_THRESHOLD + int "RX skb copy threshold (bytes)" depends on IBM_EMAC - default "8" + default "256" -config IBM_EMAC_SKBRES - int "Skb reserve amount" +config IBM_EMAC_RX_SKB_HEADROOM + int "Additional RX skb headroom (bytes)" depends on IBM_EMAC default "0" + help + Additional receive skb headroom. Note, that driver + will always reserve at least 2 bytes to make IP header + aligned, so usualy there is no need to add any additional + headroom. + + If unsure, set to 0. + +config IBM_EMAC_PHY_RX_CLK_FIX + bool "PHY Rx clock workaround" + depends on IBM_EMAC && (405EP || 440GX || 440EP) + help + Enable this if EMAC attached to a PHY which doesn't generate + RX clock if there is no link, if this is the case, you will + see "TX disable timeout" or "RX disable timeout" in the system + log. + + If unsure, say N. + +config IBM_EMAC_DEBUG + bool "Debugging" + depends on IBM_EMAC + default n + +config IBM_EMAC_ZMII + bool + depends on IBM_EMAC && (NP405H || NP405L || 44x) + default y + +config IBM_EMAC_RGMII + bool + depends on IBM_EMAC && 440GX + default y + +config IBM_EMAC_TAH + bool + depends on IBM_EMAC && 440GX + default y config NET_PCI bool "EISA, VLB, PCI and on board controllers" @@ -1775,6 +1811,7 @@ config NE_H8300 controller on the Renesas H8/300 processor. source "drivers/net/fec_8xx/Kconfig" +source "drivers/net/fs_enet/Kconfig" endmenu @@ -2201,8 +2238,8 @@ config S2IO depends on PCI ---help--- This driver supports the 10Gbe XFrame NIC of S2IO. - For help regarding driver compilation, installation and - tuning please look into ~/drivers/net/s2io/README.txt. + More specific information on configuring the driver is in + <file:Documentation/networking/s2io.txt>. config S2IO_NAPI bool "Use Rx Polling (NAPI) (EXPERIMENTAL)" diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 1a84e04..7c313cb 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -203,3 +203,6 @@ obj-$(CONFIG_IRDA) += irda/ obj-$(CONFIG_ETRAX_ETHERNET) += cris/ obj-$(CONFIG_NETCONSOLE) += netconsole.o + +obj-$(CONFIG_FS_ENET) += fs_enet/ + diff --git a/drivers/net/acenic.c b/drivers/net/acenic.c index dbecc6b..b8953de 100644 --- a/drivers/net/acenic.c +++ b/drivers/net/acenic.c @@ -871,10 +871,8 @@ static void ace_init_cleanup(struct net_device *dev) if (ap->info) pci_free_consistent(ap->pdev, sizeof(struct ace_info), ap->info, ap->info_dma); - if (ap->skb) - kfree(ap->skb); - if (ap->trace_buf) - kfree(ap->trace_buf); + kfree(ap->skb); + kfree(ap->trace_buf); if (dev->irq) free_irq(dev->irq, dev); diff --git a/drivers/net/amd8111e.c b/drivers/net/amd8111e.c index d9ba8be..d9ba8be 100755..100644 --- a/drivers/net/amd8111e.c +++ b/drivers/net/amd8111e.c diff --git a/drivers/net/amd8111e.h b/drivers/net/amd8111e.h index cfe3a42..cfe3a42 100755..100644 --- a/drivers/net/amd8111e.h +++ b/drivers/net/amd8111e.h diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c index 7850691..332e995 100644 --- a/drivers/net/au1000_eth.c +++ b/drivers/net/au1000_eth.c @@ -1606,8 +1606,7 @@ err_out: /* here we should have a valid dev plus aup-> register addresses * so we can reset the mac properly.*/ reset_mac(dev); - if (aup->mii) - kfree(aup->mii); + kfree(aup->mii); for (i = 0; i < NUM_RX_DMA; i++) { if (aup->rx_db_inuse[i]) ReleaseDB(aup, aup->rx_db_inuse[i]); @@ -1806,8 +1805,7 @@ static void __exit au1000_cleanup_module(void) if (dev) { aup = (struct au1000_private *) dev->priv; unregister_netdev(dev); - if (aup->mii) - kfree(aup->mii); + kfree(aup->mii); for (j = 0; j < NUM_RX_DMA; j++) { if (aup->rx_db_inuse[j]) ReleaseDB(aup, aup->rx_db_inuse[j]); diff --git a/drivers/net/b44.c b/drivers/net/b44.c index 282ebd1..0ee3e27 100644 --- a/drivers/net/b44.c +++ b/drivers/net/b44.c @@ -19,6 +19,7 @@ #include <linux/delay.h> #include <linux/init.h> #include <linux/version.h> +#include <linux/dma-mapping.h> #include <asm/uaccess.h> #include <asm/io.h> @@ -1130,14 +1131,10 @@ static void b44_init_rings(struct b44 *bp) */ static void b44_free_consistent(struct b44 *bp) { - if (bp->rx_buffers) { - kfree(bp->rx_buffers); - bp->rx_buffers = NULL; - } - if (bp->tx_buffers) { - kfree(bp->tx_buffers); - bp->tx_buffers = NULL; - } + kfree(bp->rx_buffers); + bp->rx_buffers = NULL; + kfree(bp->tx_buffers); + bp->tx_buffers = NULL; if (bp->rx_ring) { if (bp->flags & B44_FLAG_RX_RING_HACK) { dma_unmap_single(&bp->pdev->dev, bp->rx_ring_dma, @@ -1619,14 +1616,14 @@ static int b44_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) cmd->advertising = 0; if (bp->flags & B44_FLAG_ADV_10HALF) - cmd->advertising |= ADVERTISE_10HALF; + cmd->advertising |= ADVERTISED_10baseT_Half; if (bp->flags & B44_FLAG_ADV_10FULL) - cmd->advertising |= ADVERTISE_10FULL; + cmd->advertising |= ADVERTISED_10baseT_Full; if (bp->flags & B44_FLAG_ADV_100HALF) - cmd->advertising |= ADVERTISE_100HALF; + cmd->advertising |= ADVERTISED_100baseT_Half; if (bp->flags & B44_FLAG_ADV_100FULL) - cmd->advertising |= ADVERTISE_100FULL; - cmd->advertising |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; + cmd->advertising |= ADVERTISED_100baseT_Full; + cmd->advertising |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; cmd->speed = (bp->flags & B44_FLAG_100_BASE_T) ? SPEED_100 : SPEED_10; cmd->duplex = (bp->flags & B44_FLAG_FULL_DUPLEX) ? @@ -2044,6 +2041,8 @@ static int b44_suspend(struct pci_dev *pdev, pm_message_t state) b44_free_rings(bp); spin_unlock_irq(&bp->lock); + + free_irq(dev->irq, dev); pci_disable_device(pdev); return 0; } @@ -2060,6 +2059,9 @@ static int b44_resume(struct pci_dev *pdev) if (!netif_running(dev)) return 0; + if (request_irq(dev->irq, b44_interrupt, SA_SHIRQ, dev->name, dev)) + printk(KERN_ERR PFX "%s: request_irq failed\n", dev->name); + spin_lock_irq(&bp->lock); b44_init_rings(bp); diff --git a/drivers/net/bmac.c b/drivers/net/bmac.c index 60dba4a..73f2fcf 100644 --- a/drivers/net/bmac.c +++ b/drivers/net/bmac.c @@ -1689,10 +1689,8 @@ static void __exit bmac_exit(void) { macio_unregister_driver(&bmac_driver); - if (bmac_emergency_rxbuf != NULL) { - kfree(bmac_emergency_rxbuf); - bmac_emergency_rxbuf = NULL; - } + kfree(bmac_emergency_rxbuf); + bmac_emergency_rxbuf = NULL; } MODULE_AUTHOR("Randy Gobbel/Paul Mackerras"); diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c index 3a2ace0..11d2523 100644 --- a/drivers/net/bnx2.c +++ b/drivers/net/bnx2.c @@ -314,20 +314,16 @@ bnx2_free_mem(struct bnx2 *bp) bp->tx_desc_ring, bp->tx_desc_mapping); bp->tx_desc_ring = NULL; } - if (bp->tx_buf_ring) { - kfree(bp->tx_buf_ring); - bp->tx_buf_ring = NULL; - } + kfree(bp->tx_buf_ring); + bp->tx_buf_ring = NULL; if (bp->rx_desc_ring) { pci_free_consistent(bp->pdev, sizeof(struct rx_bd) * RX_DESC_CNT, bp->rx_desc_ring, bp->rx_desc_mapping); bp->rx_desc_ring = NULL; } - if (bp->rx_buf_ring) { - kfree(bp->rx_buf_ring); - bp->rx_buf_ring = NULL; - } + kfree(bp->rx_buf_ring); + bp->rx_buf_ring = NULL; } static int diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c index 6b9acc7..9c7feae 100644 --- a/drivers/net/e1000/e1000_ethtool.c +++ b/drivers/net/e1000/e1000_ethtool.c @@ -965,11 +965,8 @@ e1000_free_desc_rings(struct e1000_adapter *adapter) if(rxdr->desc) pci_free_consistent(pdev, rxdr->size, rxdr->desc, rxdr->dma); - if(txdr->buffer_info) - kfree(txdr->buffer_info); - if(rxdr->buffer_info) - kfree(rxdr->buffer_info); - + kfree(txdr->buffer_info); + kfree(rxdr->buffer_info); return; } diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 6b72f6a..efbbda7 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -191,8 +191,8 @@ static void e1000_vlan_rx_add_vid(struct net_device *netdev, uint16_t vid); static void e1000_vlan_rx_kill_vid(struct net_device *netdev, uint16_t vid); static void e1000_restore_vlan(struct e1000_adapter *adapter); -static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); #ifdef CONFIG_PM +static int e1000_suspend(struct pci_dev *pdev, pm_message_t state); static int e1000_resume(struct pci_dev *pdev); #endif @@ -1149,7 +1149,8 @@ e1000_setup_tx_resources(struct e1000_adapter *adapter, int size; size = sizeof(struct e1000_buffer) * txdr->count; - txdr->buffer_info = vmalloc(size); + + txdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); if(!txdr->buffer_info) { DPRINTK(PROBE, ERR, "Unable to allocate memory for the transmit descriptor ring\n"); @@ -1366,7 +1367,7 @@ e1000_setup_rx_resources(struct e1000_adapter *adapter, int size, desc_len; size = sizeof(struct e1000_buffer) * rxdr->count; - rxdr->buffer_info = vmalloc(size); + rxdr->buffer_info = vmalloc_node(size, pcibus_to_node(pdev->bus)); if (!rxdr->buffer_info) { DPRINTK(PROBE, ERR, "Unable to allocate memory for the receive descriptor ring\n"); @@ -4193,6 +4194,7 @@ e1000_set_spd_dplx(struct e1000_adapter *adapter, uint16_t spddplx) return 0; } +#ifdef CONFIG_PM static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) { @@ -4289,7 +4291,6 @@ e1000_suspend(struct pci_dev *pdev, pm_message_t state) return 0; } -#ifdef CONFIG_PM static int e1000_resume(struct pci_dev *pdev) { diff --git a/drivers/net/eepro.c b/drivers/net/eepro.c index dcb3028..1ce2c67 100644 --- a/drivers/net/eepro.c +++ b/drivers/net/eepro.c @@ -1797,10 +1797,9 @@ MODULE_AUTHOR("Pascal Dupuis and others"); MODULE_DESCRIPTION("Intel i82595 ISA EtherExpressPro10/10+ driver"); MODULE_LICENSE("GPL"); -static int num_params; -module_param_array(io, int, &num_params, 0); -module_param_array(irq, int, &num_params, 0); -module_param_array(mem, int, &num_params, 0); +module_param_array(io, int, NULL, 0); +module_param_array(irq, int, NULL, 0); +module_param_array(mem, int, NULL, 0); module_param(autodetect, int, 0); MODULE_PARM_DESC(io, "EtherExpress Pro/10 I/O base addres(es)"); MODULE_PARM_DESC(irq, "EtherExpress Pro/10 IRQ number(s)"); diff --git a/drivers/net/fs_enet/Kconfig b/drivers/net/fs_enet/Kconfig new file mode 100644 index 0000000..6aaee67 --- /dev/null +++ b/drivers/net/fs_enet/Kconfig @@ -0,0 +1,20 @@ +config FS_ENET + tristate "Freescale Ethernet Driver" + depends on NET_ETHERNET && (CPM1 || CPM2) + select MII + +config FS_ENET_HAS_SCC + bool "Chip has an SCC usable for ethernet" + depends on FS_ENET && (CPM1 || CPM2) + default y + +config FS_ENET_HAS_FCC + bool "Chip has an FCC usable for ethernet" + depends on FS_ENET && CPM2 + default y + +config FS_ENET_HAS_FEC + bool "Chip has an FEC usable for ethernet" + depends on FS_ENET && CPM1 + default y + diff --git a/drivers/net/fs_enet/Makefile b/drivers/net/fs_enet/Makefile new file mode 100644 index 0000000..d6dd3f2 --- /dev/null +++ b/drivers/net/fs_enet/Makefile @@ -0,0 +1,10 @@ +# +# Makefile for the Freescale Ethernet controllers +# + +obj-$(CONFIG_FS_ENET) += fs_enet.o + +obj-$(CONFIG_8xx) += mac-fec.o mac-scc.o +obj-$(CONFIG_8260) += mac-fcc.o + +fs_enet-objs := fs_enet-main.o fs_enet-mii.o mii-bitbang.o mii-fixed.o diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c new file mode 100644 index 0000000..44fac73 --- /dev/null +++ b/drivers/net/fs_enet/fs_enet-main.c @@ -0,0 +1,1226 @@ +/* + * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com> + * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> +#include <linux/fs.h> + +#include <linux/vmalloc.h> +#include <asm/pgtable.h> + +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#include "fs_enet.h" + +/*************************************************/ + +static char version[] __devinitdata = + DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")" "\n"; + +MODULE_AUTHOR("Pantelis Antoniou <panto@intracom.gr>"); +MODULE_DESCRIPTION("Freescale Ethernet Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_MODULE_VERSION); + +MODULE_PARM(fs_enet_debug, "i"); +MODULE_PARM_DESC(fs_enet_debug, + "Freescale bitmapped debugging message enable value"); + +int fs_enet_debug = -1; /* -1 == use FS_ENET_DEF_MSG_ENABLE as value */ + +static void fs_set_multicast_list(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + (*fep->ops->set_multicast_list)(dev); +} + +/* NAPI receive function */ +static int fs_enet_rx_napi(struct net_device *dev, int *budget) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + cbd_t *bdp; + struct sk_buff *skb, *skbn, *skbt; + int received = 0; + u16 pkt_len, sc; + int curidx; + int rx_work_limit = 0; /* pacify gcc */ + + rx_work_limit = min(dev->quota, *budget); + + if (!netif_running(dev)) + return 0; + + /* + * First, grab all of the stats for the incoming packet. + * These get messed up if we get called due to a busy condition. + */ + bdp = fep->cur_rx; + + /* clear RX status bits for napi*/ + (*fep->ops->napi_clear_rx_event)(dev); + + while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { + + curidx = bdp - fep->rx_bd_base; + + /* + * Since we have allocated space to hold a complete frame, + * the last indicator should be set. + */ + if ((sc & BD_ENET_RX_LAST) == 0) + printk(KERN_WARNING DRV_MODULE_NAME + ": %s rcv is not +last\n", + dev->name); + + /* + * Check for errors. + */ + if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | + BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { + fep->stats.rx_errors++; + /* Frame too long or too short. */ + if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) + fep->stats.rx_length_errors++; + /* Frame alignment */ + if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) + fep->stats.rx_frame_errors++; + /* CRC Error */ + if (sc & BD_ENET_RX_CR) + fep->stats.rx_crc_errors++; + /* FIFO overrun */ + if (sc & BD_ENET_RX_OV) + fep->stats.rx_crc_errors++; + + skb = fep->rx_skbuff[curidx]; + + dma_unmap_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE); + + skbn = skb; + + } else { + + /* napi, got packet but no quota */ + if (--rx_work_limit < 0) + break; + + skb = fep->rx_skbuff[curidx]; + + dma_unmap_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE); + + /* + * Process the incoming frame. + */ + fep->stats.rx_packets++; + pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ + fep->stats.rx_bytes += pkt_len + 4; + + if (pkt_len <= fpi->rx_copybreak) { + /* +2 to make IP header L1 cache aligned */ + skbn = dev_alloc_skb(pkt_len + 2); + if (skbn != NULL) { + skb_reserve(skbn, 2); /* align IP header */ + memcpy(skbn->data, skb->data, pkt_len); + /* swap */ + skbt = skb; + skb = skbn; + skbn = skbt; + } + } else + skbn = dev_alloc_skb(ENET_RX_FRSIZE); + + if (skbn != NULL) { + skb->dev = dev; + skb_put(skb, pkt_len); /* Make room */ + skb->protocol = eth_type_trans(skb, dev); + received++; + netif_receive_skb(skb); + } else { + printk(KERN_WARNING DRV_MODULE_NAME + ": %s Memory squeeze, dropping packet.\n", + dev->name); + fep->stats.rx_dropped++; + skbn = skb; + } + } + + fep->rx_skbuff[curidx] = skbn; + CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE)); + CBDW_DATLEN(bdp, 0); + CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); + + /* + * Update BD pointer to next entry. + */ + if ((sc & BD_ENET_RX_WRAP) == 0) + bdp++; + else + bdp = fep->rx_bd_base; + + (*fep->ops->rx_bd_done)(dev); + } + + fep->cur_rx = bdp; + + dev->quota -= received; + *budget -= received; + + if (rx_work_limit < 0) + return 1; /* not done */ + + /* done */ + netif_rx_complete(dev); + + (*fep->ops->napi_enable_rx)(dev); + + return 0; +} + +/* non NAPI receive function */ +static int fs_enet_rx_non_napi(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + cbd_t *bdp; + struct sk_buff *skb, *skbn, *skbt; + int received = 0; + u16 pkt_len, sc; + int curidx; + /* + * First, grab all of the stats for the incoming packet. + * These get messed up if we get called due to a busy condition. + */ + bdp = fep->cur_rx; + + while (((sc = CBDR_SC(bdp)) & BD_ENET_RX_EMPTY) == 0) { + + curidx = bdp - fep->rx_bd_base; + + /* + * Since we have allocated space to hold a complete frame, + * the last indicator should be set. + */ + if ((sc & BD_ENET_RX_LAST) == 0) + printk(KERN_WARNING DRV_MODULE_NAME + ": %s rcv is not +last\n", + dev->name); + + /* + * Check for errors. + */ + if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL | + BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) { + fep->stats.rx_errors++; + /* Frame too long or too short. */ + if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH)) + fep->stats.rx_length_errors++; + /* Frame alignment */ + if (sc & (BD_ENET_RX_NO | BD_ENET_RX_CL)) + fep->stats.rx_frame_errors++; + /* CRC Error */ + if (sc & BD_ENET_RX_CR) + fep->stats.rx_crc_errors++; + /* FIFO overrun */ + if (sc & BD_ENET_RX_OV) + fep->stats.rx_crc_errors++; + + skb = fep->rx_skbuff[curidx]; + + dma_unmap_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE); + + skbn = skb; + + } else { + + skb = fep->rx_skbuff[curidx]; + + dma_unmap_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE); + + /* + * Process the incoming frame. + */ + fep->stats.rx_packets++; + pkt_len = CBDR_DATLEN(bdp) - 4; /* remove CRC */ + fep->stats.rx_bytes += pkt_len + 4; + + if (pkt_len <= fpi->rx_copybreak) { + /* +2 to make IP header L1 cache aligned */ + skbn = dev_alloc_skb(pkt_len + 2); + if (skbn != NULL) { + skb_reserve(skbn, 2); /* align IP header */ + memcpy(skbn->data, skb->data, pkt_len); + /* swap */ + skbt = skb; + skb = skbn; + skbn = skbt; + } + } else + skbn = dev_alloc_skb(ENET_RX_FRSIZE); + + if (skbn != NULL) { + skb->dev = dev; + skb_put(skb, pkt_len); /* Make room */ + skb->protocol = eth_type_trans(skb, dev); + received++; + netif_rx(skb); + } else { + printk(KERN_WARNING DRV_MODULE_NAME + ": %s Memory squeeze, dropping packet.\n", + dev->name); + fep->stats.rx_dropped++; + skbn = skb; + } + } + + fep->rx_skbuff[curidx] = skbn; + CBDW_BUFADDR(bdp, dma_map_single(fep->dev, skbn->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE)); + CBDW_DATLEN(bdp, 0); + CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY); + + /* + * Update BD pointer to next entry. + */ + if ((sc & BD_ENET_RX_WRAP) == 0) + bdp++; + else + bdp = fep->rx_bd_base; + + (*fep->ops->rx_bd_done)(dev); + } + + fep->cur_rx = bdp; + + return 0; +} + +static void fs_enet_tx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + cbd_t *bdp; + struct sk_buff *skb; + int dirtyidx, do_wake, do_restart; + u16 sc; + + spin_lock(&fep->lock); + bdp = fep->dirty_tx; + + do_wake = do_restart = 0; + while (((sc = CBDR_SC(bdp)) & BD_ENET_TX_READY) == 0) { + + dirtyidx = bdp - fep->tx_bd_base; + + if (fep->tx_free == fep->tx_ring) + break; + + skb = fep->tx_skbuff[dirtyidx]; + + /* + * Check for errors. + */ + if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC | + BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) { + + if (sc & BD_ENET_TX_HB) /* No heartbeat */ + fep->stats.tx_heartbeat_errors++; + if (sc & BD_ENET_TX_LC) /* Late collision */ + fep->stats.tx_window_errors++; + if (sc & BD_ENET_TX_RL) /* Retrans limit */ + fep->stats.tx_aborted_errors++; + if (sc & BD_ENET_TX_UN) /* Underrun */ + fep->stats.tx_fifo_errors++; + if (sc & BD_ENET_TX_CSL) /* Carrier lost */ + fep->stats.tx_carrier_errors++; + + if (sc & (BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN)) { + fep->stats.tx_errors++; + do_restart = 1; + } + } else + fep->stats.tx_packets++; + + if (sc & BD_ENET_TX_READY) + printk(KERN_WARNING DRV_MODULE_NAME + ": %s HEY! Enet xmit interrupt and TX_READY.\n", + dev->name); + + /* + * Deferred means some collisions occurred during transmit, + * but we eventually sent the packet OK. + */ + if (sc & BD_ENET_TX_DEF) + fep->stats.collisions++; + + /* unmap */ + dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE); + + /* + * Free the sk buffer associated with this last transmit. + */ + dev_kfree_skb_irq(skb); + fep->tx_skbuff[dirtyidx] = NULL; + + /* + * Update pointer to next buffer descriptor to be transmitted. + */ + if ((sc & BD_ENET_TX_WRAP) == 0) + bdp++; + else + bdp = fep->tx_bd_base; + + /* + * Since we have freed up a buffer, the ring is no longer + * full. + */ + if (!fep->tx_free++) + do_wake = 1; + } + + fep->dirty_tx = bdp; + + if (do_restart) + (*fep->ops->tx_restart)(dev); + + spin_unlock(&fep->lock); + + if (do_wake) + netif_wake_queue(dev); +} + +/* + * The interrupt handler. + * This is called from the MPC core interrupt. + */ +static irqreturn_t +fs_enet_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = dev_id; + struct fs_enet_private *fep; + const struct fs_platform_info *fpi; + u32 int_events; + u32 int_clr_events; + int nr, napi_ok; + int handled; + + fep = netdev_priv(dev); + fpi = fep->fpi; + + nr = 0; + while ((int_events = (*fep->ops->get_int_events)(dev)) != 0) { + + nr++; + + int_clr_events = int_events; + if (fpi->use_napi) + int_clr_events &= ~fep->ev_napi_rx; + + (*fep->ops->clear_int_events)(dev, int_clr_events); + + if (int_events & fep->ev_err) + (*fep->ops->ev_error)(dev, int_events); + + if (int_events & fep->ev_rx) { + if (!fpi->use_napi) + fs_enet_rx_non_napi(dev); + else { + napi_ok = netif_rx_schedule_prep(dev); + + (*fep->ops->napi_disable_rx)(dev); + (*fep->ops->clear_int_events)(dev, fep->ev_napi_rx); + + /* NOTE: it is possible for FCCs in NAPI mode */ + /* to submit a spurious interrupt while in poll */ + if (napi_ok) + __netif_rx_schedule(dev); + } + } + + if (int_events & fep->ev_tx) + fs_enet_tx(dev); + } + + handled = nr > 0; + return IRQ_RETVAL(handled); +} + +void fs_init_bds(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + cbd_t *bdp; + struct sk_buff *skb; + int i; + + fs_cleanup_bds(dev); + + fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; + fep->tx_free = fep->tx_ring; + fep->cur_rx = fep->rx_bd_base; + + /* + * Initialize the receive buffer descriptors. + */ + for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) { + skb = dev_alloc_skb(ENET_RX_FRSIZE); + if (skb == NULL) { + printk(KERN_WARNING DRV_MODULE_NAME + ": %s Memory squeeze, unable to allocate skb\n", + dev->name); + break; + } + fep->rx_skbuff[i] = skb; + skb->dev = dev; + CBDW_BUFADDR(bdp, + dma_map_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE)); + CBDW_DATLEN(bdp, 0); /* zero */ + CBDW_SC(bdp, BD_ENET_RX_EMPTY | + ((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP)); + } + /* + * if we failed, fillup remainder + */ + for (; i < fep->rx_ring; i++, bdp++) { + fep->rx_skbuff[i] = NULL; + CBDW_SC(bdp, (i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP); + } + + /* + * ...and the same for transmit. + */ + for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) { + fep->tx_skbuff[i] = NULL; + CBDW_BUFADDR(bdp, 0); + CBDW_DATLEN(bdp, 0); + CBDW_SC(bdp, (i < fep->tx_ring - 1) ? 0 : BD_SC_WRAP); + } +} + +void fs_cleanup_bds(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct sk_buff *skb; + int i; + + /* + * Reset SKB transmit buffers. + */ + for (i = 0; i < fep->tx_ring; i++) { + if ((skb = fep->tx_skbuff[i]) == NULL) + continue; + + /* unmap */ + dma_unmap_single(fep->dev, skb->data, skb->len, DMA_TO_DEVICE); + + fep->tx_skbuff[i] = NULL; + dev_kfree_skb(skb); + } + + /* + * Reset SKB receive buffers + */ + for (i = 0; i < fep->rx_ring; i++) { + if ((skb = fep->rx_skbuff[i]) == NULL) + continue; + + /* unmap */ + dma_unmap_single(fep->dev, skb->data, + L1_CACHE_ALIGN(PKT_MAXBUF_SIZE), + DMA_FROM_DEVICE); + + fep->rx_skbuff[i] = NULL; + + dev_kfree_skb(skb); + } +} + +/**********************************************************************************/ + +static int fs_enet_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + cbd_t *bdp; + int curidx; + u16 sc; + unsigned long flags; + + spin_lock_irqsave(&fep->tx_lock, flags); + + /* + * Fill in a Tx ring entry + */ + bdp = fep->cur_tx; + + if (!fep->tx_free || (CBDR_SC(bdp) & BD_ENET_TX_READY)) { + netif_stop_queue(dev); + spin_unlock_irqrestore(&fep->tx_lock, flags); + + /* + * Ooops. All transmit buffers are full. Bail out. + * This should not happen, since the tx queue should be stopped. + */ + printk(KERN_WARNING DRV_MODULE_NAME + ": %s tx queue full!.\n", dev->name); + return NETDEV_TX_BUSY; + } + + curidx = bdp - fep->tx_bd_base; + /* + * Clear all of the status flags. + */ + CBDC_SC(bdp, BD_ENET_TX_STATS); + + /* + * Save skb pointer. + */ + fep->tx_skbuff[curidx] = skb; + + fep->stats.tx_bytes += skb->len; + + /* + * Push the data cache so the CPM does not get stale memory data. + */ + CBDW_BUFADDR(bdp, dma_map_single(fep->dev, + skb->data, skb->len, DMA_TO_DEVICE)); + CBDW_DATLEN(bdp, skb->len); + + dev->trans_start = jiffies; + + /* + * If this was the last BD in the ring, start at the beginning again. + */ + if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0) + fep->cur_tx++; + else + fep->cur_tx = fep->tx_bd_base; + + if (!--fep->tx_free) + netif_stop_queue(dev); + + /* Trigger transmission start */ + sc = BD_ENET_TX_READY | BD_ENET_TX_INTR | + BD_ENET_TX_LAST | BD_ENET_TX_TC; + + /* note that while FEC does not have this bit + * it marks it as available for software use + * yay for hw reuse :) */ + if (skb->len <= 60) + sc |= BD_ENET_TX_PAD; + CBDS_SC(bdp, sc); + + (*fep->ops->tx_kickstart)(dev); + + spin_unlock_irqrestore(&fep->tx_lock, flags); + + return NETDEV_TX_OK; +} + +static int fs_request_irq(struct net_device *dev, int irq, const char *name, + irqreturn_t (*irqf)(int irq, void *dev_id, struct pt_regs *regs)) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + (*fep->ops->pre_request_irq)(dev, irq); + return request_irq(irq, irqf, SA_SHIRQ, name, dev); +} + +static void fs_free_irq(struct net_device *dev, int irq) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + free_irq(irq, dev); + (*fep->ops->post_free_irq)(dev, irq); +} + +/**********************************************************************************/ + +/* This interrupt occurs when the PHY detects a link change. */ +static irqreturn_t +fs_mii_link_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + struct net_device *dev = dev_id; + struct fs_enet_private *fep; + const struct fs_platform_info *fpi; + + fep = netdev_priv(dev); + fpi = fep->fpi; + + /* + * Acknowledge the interrupt if possible. If we have not + * found the PHY yet we can't process or acknowledge the + * interrupt now. Instead we ignore this interrupt for now, + * which we can do since it is edge triggered. It will be + * acknowledged later by fs_enet_open(). + */ + if (!fep->phy) + return IRQ_NONE; + + fs_mii_ack_int(dev); + fs_mii_link_status_change_check(dev, 0); + + return IRQ_HANDLED; +} + +static void fs_timeout(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + unsigned long flags; + int wake = 0; + + fep->stats.tx_errors++; + + spin_lock_irqsave(&fep->lock, flags); + + if (dev->flags & IFF_UP) { + (*fep->ops->stop)(dev); + (*fep->ops->restart)(dev); + } + + wake = fep->tx_free && !(CBDR_SC(fep->cur_tx) & BD_ENET_TX_READY); + spin_unlock_irqrestore(&fep->lock, flags); + + if (wake) + netif_wake_queue(dev); +} + +static int fs_enet_open(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + int r; + + /* Install our interrupt handler. */ + r = fs_request_irq(dev, fep->interrupt, "fs_enet-mac", fs_enet_interrupt); + if (r != 0) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s Could not allocate FEC IRQ!", dev->name); + return -EINVAL; + } + + /* Install our phy interrupt handler */ + if (fpi->phy_irq != -1) { + + r = fs_request_irq(dev, fpi->phy_irq, "fs_enet-phy", fs_mii_link_interrupt); + if (r != 0) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s Could not allocate PHY IRQ!", dev->name); + fs_free_irq(dev, fep->interrupt); + return -EINVAL; + } + } + + fs_mii_startup(dev); + netif_carrier_off(dev); + fs_mii_link_status_change_check(dev, 1); + + return 0; +} + +static int fs_enet_close(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + unsigned long flags; + + netif_stop_queue(dev); + netif_carrier_off(dev); + fs_mii_shutdown(dev); + + spin_lock_irqsave(&fep->lock, flags); + (*fep->ops->stop)(dev); + spin_unlock_irqrestore(&fep->lock, flags); + + /* release any irqs */ + if (fpi->phy_irq != -1) + fs_free_irq(dev, fpi->phy_irq); + fs_free_irq(dev, fep->interrupt); + + return 0; +} + +static struct net_device_stats *fs_enet_get_stats(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + return &fep->stats; +} + +/*************************************************************************/ + +static void fs_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + strcpy(info->driver, DRV_MODULE_NAME); + strcpy(info->version, DRV_MODULE_VERSION); +} + +static int fs_get_regs_len(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + return (*fep->ops->get_regs_len)(dev); +} + +static void fs_get_regs(struct net_device *dev, struct ethtool_regs *regs, + void *p) +{ + struct fs_enet_private *fep = netdev_priv(dev); + unsigned long flags; + int r, len; + + len = regs->len; + + spin_lock_irqsave(&fep->lock, flags); + r = (*fep->ops->get_regs)(dev, p, &len); + spin_unlock_irqrestore(&fep->lock, flags); + + if (r == 0) + regs->version = 0; +} + +static int fs_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct fs_enet_private *fep = netdev_priv(dev); + unsigned long flags; + int rc; + + spin_lock_irqsave(&fep->lock, flags); + rc = mii_ethtool_gset(&fep->mii_if, cmd); + spin_unlock_irqrestore(&fep->lock, flags); + + return rc; +} + +static int fs_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) +{ + struct fs_enet_private *fep = netdev_priv(dev); + unsigned long flags; + int rc; + + spin_lock_irqsave(&fep->lock, flags); + rc = mii_ethtool_sset(&fep->mii_if, cmd); + spin_unlock_irqrestore(&fep->lock, flags); + + return rc; +} + +static int fs_nway_reset(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + return mii_nway_restart(&fep->mii_if); +} + +static u32 fs_get_msglevel(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + return fep->msg_enable; +} + +static void fs_set_msglevel(struct net_device *dev, u32 value) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fep->msg_enable = value; +} + +static struct ethtool_ops fs_ethtool_ops = { + .get_drvinfo = fs_get_drvinfo, + .get_regs_len = fs_get_regs_len, + .get_settings = fs_get_settings, + .set_settings = fs_set_settings, + .nway_reset = fs_nway_reset, + .get_link = ethtool_op_get_link, + .get_msglevel = fs_get_msglevel, + .set_msglevel = fs_set_msglevel, + .get_tx_csum = ethtool_op_get_tx_csum, + .set_tx_csum = ethtool_op_set_tx_csum, /* local! */ + .get_sg = ethtool_op_get_sg, + .set_sg = ethtool_op_set_sg, + .get_regs = fs_get_regs, +}; + +static int fs_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct mii_ioctl_data *mii = (struct mii_ioctl_data *)&rq->ifr_data; + unsigned long flags; + int rc; + + if (!netif_running(dev)) + return -EINVAL; + + spin_lock_irqsave(&fep->lock, flags); + rc = generic_mii_ioctl(&fep->mii_if, mii, cmd, NULL); + spin_unlock_irqrestore(&fep->lock, flags); + return rc; +} + +extern int fs_mii_connect(struct net_device *dev); +extern void fs_mii_disconnect(struct net_device *dev); + +static struct net_device *fs_init_instance(struct device *dev, + const struct fs_platform_info *fpi) +{ + struct net_device *ndev = NULL; + struct fs_enet_private *fep = NULL; + int privsize, i, r, err = 0, registered = 0; + + /* guard */ + if ((unsigned int)fpi->fs_no >= FS_MAX_INDEX) + return ERR_PTR(-EINVAL); + + privsize = sizeof(*fep) + (sizeof(struct sk_buff **) * + (fpi->rx_ring + fpi->tx_ring)); + + ndev = alloc_etherdev(privsize); + if (!ndev) { + err = -ENOMEM; + goto err; + } + SET_MODULE_OWNER(ndev); + + fep = netdev_priv(ndev); + memset(fep, 0, privsize); /* clear everything */ + + fep->dev = dev; + dev_set_drvdata(dev, ndev); + fep->fpi = fpi; + if (fpi->init_ioports) + fpi->init_ioports(); + +#ifdef CONFIG_FS_ENET_HAS_FEC + if (fs_get_fec_index(fpi->fs_no) >= 0) + fep->ops = &fs_fec_ops; +#endif + +#ifdef CONFIG_FS_ENET_HAS_SCC + if (fs_get_scc_index(fpi->fs_no) >=0 ) + fep->ops = &fs_scc_ops; +#endif + +#ifdef CONFIG_FS_ENET_HAS_FCC + if (fs_get_fcc_index(fpi->fs_no) >= 0) + fep->ops = &fs_fcc_ops; +#endif + + if (fep->ops == NULL) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s No matching ops found (%d).\n", + ndev->name, fpi->fs_no); + err = -EINVAL; + goto err; + } + + r = (*fep->ops->setup_data)(ndev); + if (r != 0) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s setup_data failed\n", + ndev->name); + err = r; + goto err; + } + + /* point rx_skbuff, tx_skbuff */ + fep->rx_skbuff = (struct sk_buff **)&fep[1]; + fep->tx_skbuff = fep->rx_skbuff + fpi->rx_ring; + + /* init locks */ + spin_lock_init(&fep->lock); + spin_lock_init(&fep->tx_lock); + + /* + * Set the Ethernet address. + */ + for (i = 0; i < 6; i++) + ndev->dev_addr[i] = fpi->macaddr[i]; + + r = (*fep->ops->allocate_bd)(ndev); + + if (fep->ring_base == NULL) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s buffer descriptor alloc failed (%d).\n", ndev->name, r); + err = r; + goto err; + } + + /* + * Set receive and transmit descriptor base. + */ + fep->rx_bd_base = fep->ring_base; + fep->tx_bd_base = fep->rx_bd_base + fpi->rx_ring; + + /* initialize ring size variables */ + fep->tx_ring = fpi->tx_ring; + fep->rx_ring = fpi->rx_ring; + + /* + * The FEC Ethernet specific entries in the device structure. + */ + ndev->open = fs_enet_open; + ndev->hard_start_xmit = fs_enet_start_xmit; + ndev->tx_timeout = fs_timeout; + ndev->watchdog_timeo = 2 * HZ; + ndev->stop = fs_enet_close; + ndev->get_stats = fs_enet_get_stats; + ndev->set_multicast_list = fs_set_multicast_list; + if (fpi->use_napi) { + ndev->poll = fs_enet_rx_napi; + ndev->weight = fpi->napi_weight; + } + ndev->ethtool_ops = &fs_ethtool_ops; + ndev->do_ioctl = fs_ioctl; + + init_timer(&fep->phy_timer_list); + + netif_carrier_off(ndev); + + err = register_netdev(ndev); + if (err != 0) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s register_netdev failed.\n", ndev->name); + goto err; + } + registered = 1; + + err = fs_mii_connect(ndev); + if (err != 0) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s fs_mii_connect failed.\n", ndev->name); + goto err; + } + + return ndev; + + err: + if (ndev != NULL) { + + if (registered) + unregister_netdev(ndev); + + if (fep != NULL) { + (*fep->ops->free_bd)(ndev); + (*fep->ops->cleanup_data)(ndev); + } + + free_netdev(ndev); + } + + dev_set_drvdata(dev, NULL); + + return ERR_PTR(err); +} + +static int fs_cleanup_instance(struct net_device *ndev) +{ + struct fs_enet_private *fep; + const struct fs_platform_info *fpi; + struct device *dev; + + if (ndev == NULL) + return -EINVAL; + + fep = netdev_priv(ndev); + if (fep == NULL) + return -EINVAL; + + fpi = fep->fpi; + + fs_mii_disconnect(ndev); + + unregister_netdev(ndev); + + dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t), + fep->ring_base, fep->ring_mem_addr); + + /* reset it */ + (*fep->ops->cleanup_data)(ndev); + + dev = fep->dev; + if (dev != NULL) { + dev_set_drvdata(dev, NULL); + fep->dev = NULL; + } + + free_netdev(ndev); + + return 0; +} + +/**************************************************************************************/ + +/* handy pointer to the immap */ +void *fs_enet_immap = NULL; + +static int setup_immap(void) +{ + phys_addr_t paddr = 0; + unsigned long size = 0; + +#ifdef CONFIG_CPM1 + paddr = IMAP_ADDR; + size = 0x10000; /* map 64K */ +#endif + +#ifdef CONFIG_CPM2 + paddr = CPM_MAP_ADDR; + size = 0x40000; /* map 256 K */ +#endif + fs_enet_immap = ioremap(paddr, size); + if (fs_enet_immap == NULL) + return -EBADF; /* XXX ahem; maybe just BUG_ON? */ + + return 0; +} + +static void cleanup_immap(void) +{ + if (fs_enet_immap != NULL) { + iounmap(fs_enet_immap); + fs_enet_immap = NULL; + } +} + +/**************************************************************************************/ + +static int __devinit fs_enet_probe(struct device *dev) +{ + struct net_device *ndev; + + /* no fixup - no device */ + if (dev->platform_data == NULL) { + printk(KERN_INFO "fs_enet: " + "probe called with no platform data; " + "remove unused devices\n"); + return -ENODEV; + } + + ndev = fs_init_instance(dev, dev->platform_data); + if (IS_ERR(ndev)) + return PTR_ERR(ndev); + return 0; +} + +static int fs_enet_remove(struct device *dev) +{ + return fs_cleanup_instance(dev_get_drvdata(dev)); +} + +static struct device_driver fs_enet_fec_driver = { + .name = "fsl-cpm-fec", + .bus = &platform_bus_type, + .probe = fs_enet_probe, + .remove = fs_enet_remove, +#ifdef CONFIG_PM +/* .suspend = fs_enet_suspend, TODO */ +/* .resume = fs_enet_resume, TODO */ +#endif +}; + +static struct device_driver fs_enet_scc_driver = { + .name = "fsl-cpm-scc", + .bus = &platform_bus_type, + .probe = fs_enet_probe, + .remove = fs_enet_remove, +#ifdef CONFIG_PM +/* .suspend = fs_enet_suspend, TODO */ +/* .resume = fs_enet_resume, TODO */ +#endif +}; + +static struct device_driver fs_enet_fcc_driver = { + .name = "fsl-cpm-fcc", + .bus = &platform_bus_type, + .probe = fs_enet_probe, + .remove = fs_enet_remove, +#ifdef CONFIG_PM +/* .suspend = fs_enet_suspend, TODO */ +/* .resume = fs_enet_resume, TODO */ +#endif +}; + +static int __init fs_init(void) +{ + int r; + + printk(KERN_INFO + "%s", version); + + r = setup_immap(); + if (r != 0) + return r; + r = driver_register(&fs_enet_fec_driver); + if (r != 0) + goto err; + + r = driver_register(&fs_enet_fcc_driver); + if (r != 0) + goto err; + + r = driver_register(&fs_enet_scc_driver); + if (r != 0) + goto err; + + return 0; +err: + cleanup_immap(); + return r; + +} + +static void __exit fs_cleanup(void) +{ + driver_unregister(&fs_enet_fec_driver); + driver_unregister(&fs_enet_fcc_driver); + driver_unregister(&fs_enet_scc_driver); + cleanup_immap(); +} + +/**************************************************************************************/ + +module_init(fs_init); +module_exit(fs_cleanup); diff --git a/drivers/net/fs_enet/fs_enet-mii.c b/drivers/net/fs_enet/fs_enet-mii.c new file mode 100644 index 0000000..c677037 --- /dev/null +++ b/drivers/net/fs_enet/fs_enet-mii.c @@ -0,0 +1,507 @@ +/* + * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com> + * and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> + +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#include "fs_enet.h" + +/*************************************************/ + +/* + * Generic PHY support. + * Should work for all PHYs, but link change is detected by polling + */ + +static void generic_timer_callback(unsigned long data) +{ + struct net_device *dev = (struct net_device *)data; + struct fs_enet_private *fep = netdev_priv(dev); + + fep->phy_timer_list.expires = jiffies + HZ / 2; + + add_timer(&fep->phy_timer_list); + + fs_mii_link_status_change_check(dev, 0); +} + +static void generic_startup(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + fep->phy_timer_list.expires = jiffies + HZ / 2; /* every 500ms */ + fep->phy_timer_list.data = (unsigned long)dev; + fep->phy_timer_list.function = generic_timer_callback; + add_timer(&fep->phy_timer_list); +} + +static void generic_shutdown(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + del_timer_sync(&fep->phy_timer_list); +} + +/* ------------------------------------------------------------------------- */ +/* The Davicom DM9161 is used on the NETTA board */ + +/* register definitions */ + +#define MII_DM9161_ANAR 4 /* Aux. Config Register */ +#define MII_DM9161_ACR 16 /* Aux. Config Register */ +#define MII_DM9161_ACSR 17 /* Aux. Config/Status Register */ +#define MII_DM9161_10TCSR 18 /* 10BaseT Config/Status Reg. */ +#define MII_DM9161_INTR 21 /* Interrupt Register */ +#define MII_DM9161_RECR 22 /* Receive Error Counter Reg. */ +#define MII_DM9161_DISCR 23 /* Disconnect Counter Register */ + +static void dm9161_startup(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0000); + /* Start autonegotiation */ + fs_mii_write(dev, fep->mii_if.phy_id, MII_BMCR, 0x1200); + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ*8); +} + +static void dm9161_ack_int(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + fs_mii_read(dev, fep->mii_if.phy_id, MII_DM9161_INTR); +} + +static void dm9161_shutdown(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + fs_mii_write(dev, fep->mii_if.phy_id, MII_DM9161_INTR, 0x0f00); +} + +/**********************************************************************************/ + +static const struct phy_info phy_info[] = { + { + .id = 0x00181b88, + .name = "DM9161", + .startup = dm9161_startup, + .ack_int = dm9161_ack_int, + .shutdown = dm9161_shutdown, + }, { + .id = 0, + .name = "GENERIC", + .startup = generic_startup, + .shutdown = generic_shutdown, + }, +}; + +/**********************************************************************************/ + +static int phy_id_detect(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + struct fs_enet_mii_bus *bus = fep->mii_bus; + int i, r, start, end, phytype, physubtype; + const struct phy_info *phy; + int phy_hwid, phy_id; + + phy_hwid = -1; + fep->phy = NULL; + + /* auto-detect? */ + if (fpi->phy_addr == -1) { + start = 1; + end = 32; + } else { /* direct */ + start = fpi->phy_addr; + end = start + 1; + } + + for (phy_id = start; phy_id < end; phy_id++) { + /* skip already used phy addresses on this bus */ + if (bus->usage_map & (1 << phy_id)) + continue; + r = fs_mii_read(dev, phy_id, MII_PHYSID1); + if (r == -1 || (phytype = (r & 0xffff)) == 0xffff) + continue; + r = fs_mii_read(dev, phy_id, MII_PHYSID2); + if (r == -1 || (physubtype = (r & 0xffff)) == 0xffff) + continue; + phy_hwid = (phytype << 16) | physubtype; + if (phy_hwid != -1) + break; + } + + if (phy_hwid == -1) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s No PHY detected! range=0x%02x-0x%02x\n", + dev->name, start, end); + return -1; + } + + for (i = 0, phy = phy_info; i < ARRAY_SIZE(phy_info); i++, phy++) + if (phy->id == (phy_hwid >> 4) || phy->id == 0) + break; + + if (i >= ARRAY_SIZE(phy_info)) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s PHY id 0x%08x is not supported!\n", + dev->name, phy_hwid); + return -1; + } + + fep->phy = phy; + + /* mark this address as used */ + bus->usage_map |= (1 << phy_id); + + printk(KERN_INFO DRV_MODULE_NAME + ": %s Phy @ 0x%x, type %s (0x%08x)%s\n", + dev->name, phy_id, fep->phy->name, phy_hwid, + fpi->phy_addr == -1 ? " (auto-detected)" : ""); + + return phy_id; +} + +void fs_mii_startup(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (fep->phy->startup) + (*fep->phy->startup) (dev); +} + +void fs_mii_shutdown(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (fep->phy->shutdown) + (*fep->phy->shutdown) (dev); +} + +void fs_mii_ack_int(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (fep->phy->ack_int) + (*fep->phy->ack_int) (dev); +} + +#define MII_LINK 0x0001 +#define MII_HALF 0x0002 +#define MII_FULL 0x0004 +#define MII_BASE4 0x0008 +#define MII_10M 0x0010 +#define MII_100M 0x0020 +#define MII_1G 0x0040 +#define MII_10G 0x0080 + +/* return full mii info at one gulp, with a usable form */ +static unsigned int mii_full_status(struct mii_if_info *mii) +{ + unsigned int status; + int bmsr, adv, lpa, neg; + struct fs_enet_private* fep = netdev_priv(mii->dev); + + /* first, a dummy read, needed to latch some MII phys */ + (void)mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); + bmsr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); + + /* no link */ + if ((bmsr & BMSR_LSTATUS) == 0) + return 0; + + status = MII_LINK; + + /* Lets look what ANEG says if it's supported - otherwize we shall + take the right values from the platform info*/ + if(!mii->force_media) { + /* autoneg not completed; don't bother */ + if ((bmsr & BMSR_ANEGCOMPLETE) == 0) + return 0; + + adv = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_ADVERTISE); + lpa = (*mii->mdio_read)(mii->dev, mii->phy_id, MII_LPA); + + neg = lpa & adv; + } else { + neg = fep->fpi->bus_info->lpa; + } + + if (neg & LPA_100FULL) + status |= MII_FULL | MII_100M; + else if (neg & LPA_100BASE4) + status |= MII_FULL | MII_BASE4 | MII_100M; + else if (neg & LPA_100HALF) + status |= MII_HALF | MII_100M; + else if (neg & LPA_10FULL) + status |= MII_FULL | MII_10M; + else + status |= MII_HALF | MII_10M; + + return status; +} + +void fs_mii_link_status_change_check(struct net_device *dev, int init_media) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct mii_if_info *mii = &fep->mii_if; + unsigned int mii_status; + int ok_to_print, link, duplex, speed; + unsigned long flags; + + ok_to_print = netif_msg_link(fep); + + mii_status = mii_full_status(mii); + + if (!init_media && mii_status == fep->last_mii_status) + return; + + fep->last_mii_status = mii_status; + + link = !!(mii_status & MII_LINK); + duplex = !!(mii_status & MII_FULL); + speed = (mii_status & MII_100M) ? 100 : 10; + + if (link == 0) { + netif_carrier_off(mii->dev); + netif_stop_queue(dev); + if (!init_media) { + spin_lock_irqsave(&fep->lock, flags); + (*fep->ops->stop)(dev); + spin_unlock_irqrestore(&fep->lock, flags); + } + + if (ok_to_print) + printk(KERN_INFO "%s: link down\n", mii->dev->name); + + } else { + + mii->full_duplex = duplex; + + netif_carrier_on(mii->dev); + + spin_lock_irqsave(&fep->lock, flags); + fep->duplex = duplex; + fep->speed = speed; + (*fep->ops->restart)(dev); + spin_unlock_irqrestore(&fep->lock, flags); + + netif_start_queue(dev); + + if (ok_to_print) + printk(KERN_INFO "%s: link up, %dMbps, %s-duplex\n", + dev->name, speed, duplex ? "full" : "half"); + } +} + +/**********************************************************************************/ + +int fs_mii_read(struct net_device *dev, int phy_id, int location) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct fs_enet_mii_bus *bus = fep->mii_bus; + + unsigned long flags; + int ret; + + spin_lock_irqsave(&bus->mii_lock, flags); + ret = (*bus->mii_read)(bus, phy_id, location); + spin_unlock_irqrestore(&bus->mii_lock, flags); + + return ret; +} + +void fs_mii_write(struct net_device *dev, int phy_id, int location, int value) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct fs_enet_mii_bus *bus = fep->mii_bus; + unsigned long flags; + + spin_lock_irqsave(&bus->mii_lock, flags); + (*bus->mii_write)(bus, phy_id, location, value); + spin_unlock_irqrestore(&bus->mii_lock, flags); +} + +/*****************************************************************************/ + +/* list of all registered mii buses */ +static LIST_HEAD(fs_mii_bus_list); + +static struct fs_enet_mii_bus *lookup_bus(int method, int id) +{ + struct list_head *ptr; + struct fs_enet_mii_bus *bus; + + list_for_each(ptr, &fs_mii_bus_list) { + bus = list_entry(ptr, struct fs_enet_mii_bus, list); + if (bus->bus_info->method == method && + bus->bus_info->id == id) + return bus; + } + return NULL; +} + +static struct fs_enet_mii_bus *create_bus(const struct fs_mii_bus_info *bi) +{ + struct fs_enet_mii_bus *bus; + int ret = 0; + + bus = kmalloc(sizeof(*bus), GFP_KERNEL); + if (bus == NULL) { + ret = -ENOMEM; + goto err; + } + memset(bus, 0, sizeof(*bus)); + spin_lock_init(&bus->mii_lock); + bus->bus_info = bi; + bus->refs = 0; + bus->usage_map = 0; + + /* perform initialization */ + switch (bi->method) { + + case fsmii_fixed: + ret = fs_mii_fixed_init(bus); + if (ret != 0) + goto err; + break; + + case fsmii_bitbang: + ret = fs_mii_bitbang_init(bus); + if (ret != 0) + goto err; + break; +#ifdef CONFIG_FS_ENET_HAS_FEC + case fsmii_fec: + ret = fs_mii_fec_init(bus); + if (ret != 0) + goto err; + break; +#endif + default: + ret = -EINVAL; + goto err; + } + + list_add(&bus->list, &fs_mii_bus_list); + + return bus; + +err: + if (bus) + kfree(bus); + return ERR_PTR(ret); +} + +static void destroy_bus(struct fs_enet_mii_bus *bus) +{ + /* remove from bus list */ + list_del(&bus->list); + + /* nothing more needed */ + kfree(bus); +} + +int fs_mii_connect(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + struct fs_enet_mii_bus *bus = NULL; + + /* check method validity */ + switch (fpi->bus_info->method) { + case fsmii_fixed: + case fsmii_bitbang: + break; +#ifdef CONFIG_FS_ENET_HAS_FEC + case fsmii_fec: + break; +#endif + default: + printk(KERN_ERR DRV_MODULE_NAME + ": %s Unknown MII bus method (%d)!\n", + dev->name, fpi->bus_info->method); + return -EINVAL; + } + + bus = lookup_bus(fpi->bus_info->method, fpi->bus_info->id); + + /* if not found create new bus */ + if (bus == NULL) { + bus = create_bus(fpi->bus_info); + if (IS_ERR(bus)) { + printk(KERN_ERR DRV_MODULE_NAME + ": %s MII bus creation failure!\n", dev->name); + return PTR_ERR(bus); + } + } + + bus->refs++; + + fep->mii_bus = bus; + + fep->mii_if.dev = dev; + fep->mii_if.phy_id_mask = 0x1f; + fep->mii_if.reg_num_mask = 0x1f; + fep->mii_if.mdio_read = fs_mii_read; + fep->mii_if.mdio_write = fs_mii_write; + fep->mii_if.force_media = fpi->bus_info->disable_aneg; + fep->mii_if.phy_id = phy_id_detect(dev); + + return 0; +} + +void fs_mii_disconnect(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + struct fs_enet_mii_bus *bus = NULL; + + bus = fep->mii_bus; + fep->mii_bus = NULL; + + if (--bus->refs <= 0) + destroy_bus(bus); +} diff --git a/drivers/net/fs_enet/fs_enet.h b/drivers/net/fs_enet/fs_enet.h new file mode 100644 index 0000000..1105543 --- /dev/null +++ b/drivers/net/fs_enet/fs_enet.h @@ -0,0 +1,245 @@ +#ifndef FS_ENET_H +#define FS_ENET_H + +#include <linux/mii.h> +#include <linux/netdevice.h> +#include <linux/types.h> +#include <linux/version.h> +#include <linux/list.h> + +#include <linux/fs_enet_pd.h> + +#include <asm/dma-mapping.h> + +#ifdef CONFIG_CPM1 +#include <asm/commproc.h> +#endif + +#ifdef CONFIG_CPM2 +#include <asm/cpm2.h> +#endif + +/* hw driver ops */ +struct fs_ops { + int (*setup_data)(struct net_device *dev); + int (*allocate_bd)(struct net_device *dev); + void (*free_bd)(struct net_device *dev); + void (*cleanup_data)(struct net_device *dev); + void (*set_multicast_list)(struct net_device *dev); + void (*restart)(struct net_device *dev); + void (*stop)(struct net_device *dev); + void (*pre_request_irq)(struct net_device *dev, int irq); + void (*post_free_irq)(struct net_device *dev, int irq); + void (*napi_clear_rx_event)(struct net_device *dev); + void (*napi_enable_rx)(struct net_device *dev); + void (*napi_disable_rx)(struct net_device *dev); + void (*rx_bd_done)(struct net_device *dev); + void (*tx_kickstart)(struct net_device *dev); + u32 (*get_int_events)(struct net_device *dev); + void (*clear_int_events)(struct net_device *dev, u32 int_events); + void (*ev_error)(struct net_device *dev, u32 int_events); + int (*get_regs)(struct net_device *dev, void *p, int *sizep); + int (*get_regs_len)(struct net_device *dev); + void (*tx_restart)(struct net_device *dev); +}; + +struct phy_info { + unsigned int id; + const char *name; + void (*startup) (struct net_device * dev); + void (*shutdown) (struct net_device * dev); + void (*ack_int) (struct net_device * dev); +}; + +/* The FEC stores dest/src/type, data, and checksum for receive packets. + */ +#define MAX_MTU 1508 /* Allow fullsized pppoe packets over VLAN */ +#define MIN_MTU 46 /* this is data size */ +#define CRC_LEN 4 + +#define PKT_MAXBUF_SIZE (MAX_MTU+ETH_HLEN+CRC_LEN) +#define PKT_MINBUF_SIZE (MIN_MTU+ETH_HLEN+CRC_LEN) + +/* Must be a multiple of 32 (to cover both FEC & FCC) */ +#define PKT_MAXBLR_SIZE ((PKT_MAXBUF_SIZE + 31) & ~31) +/* This is needed so that invalidate_xxx wont invalidate too much */ +#define ENET_RX_FRSIZE L1_CACHE_ALIGN(PKT_MAXBUF_SIZE) + +struct fs_enet_mii_bus { + struct list_head list; + spinlock_t mii_lock; + const struct fs_mii_bus_info *bus_info; + int refs; + u32 usage_map; + + int (*mii_read)(struct fs_enet_mii_bus *bus, + int phy_id, int location); + + void (*mii_write)(struct fs_enet_mii_bus *bus, + int phy_id, int location, int value); + + union { + struct { + unsigned int mii_speed; + void *fecp; + } fec; + + struct { + /* note that the actual port size may */ + /* be different; cpm(s) handle it OK */ + u8 mdio_msk; + u8 *mdio_dir; + u8 *mdio_dat; + u8 mdc_msk; + u8 *mdc_dir; + u8 *mdc_dat; + } bitbang; + + struct { + u16 lpa; + } fixed; + }; +}; + +int fs_mii_bitbang_init(struct fs_enet_mii_bus *bus); +int fs_mii_fixed_init(struct fs_enet_mii_bus *bus); +int fs_mii_fec_init(struct fs_enet_mii_bus *bus); + +struct fs_enet_private { + struct device *dev; /* pointer back to the device (must be initialized first) */ + spinlock_t lock; /* during all ops except TX pckt processing */ + spinlock_t tx_lock; /* during fs_start_xmit and fs_tx */ + const struct fs_platform_info *fpi; + const struct fs_ops *ops; + int rx_ring, tx_ring; + dma_addr_t ring_mem_addr; + void *ring_base; + struct sk_buff **rx_skbuff; + struct sk_buff **tx_skbuff; + cbd_t *rx_bd_base; /* Address of Rx and Tx buffers. */ + cbd_t *tx_bd_base; + cbd_t *dirty_tx; /* ring entries to be free()ed. */ + cbd_t *cur_rx; + cbd_t *cur_tx; + int tx_free; + struct net_device_stats stats; + struct timer_list phy_timer_list; + const struct phy_info *phy; + u32 msg_enable; + struct mii_if_info mii_if; + unsigned int last_mii_status; + struct fs_enet_mii_bus *mii_bus; + int interrupt; + + int duplex, speed; /* current settings */ + + /* event masks */ + u32 ev_napi_rx; /* mask of NAPI rx events */ + u32 ev_rx; /* rx event mask */ + u32 ev_tx; /* tx event mask */ + u32 ev_err; /* error event mask */ + + u16 bd_rx_empty; /* mask of BD rx empty */ + u16 bd_rx_err; /* mask of BD rx errors */ + + union { + struct { + int idx; /* FEC1 = 0, FEC2 = 1 */ + void *fecp; /* hw registers */ + u32 hthi, htlo; /* state for multicast */ + } fec; + + struct { + int idx; /* FCC1-3 = 0-2 */ + void *fccp; /* hw registers */ + void *ep; /* parameter ram */ + void *fcccp; /* hw registers cont. */ + void *mem; /* FCC DPRAM */ + u32 gaddrh, gaddrl; /* group address */ + } fcc; + + struct { + int idx; /* FEC1 = 0, FEC2 = 1 */ + void *sccp; /* hw registers */ + void *ep; /* parameter ram */ + u32 hthi, htlo; /* state for multicast */ + } scc; + + }; +}; + +/***************************************************************************/ + +int fs_mii_read(struct net_device *dev, int phy_id, int location); +void fs_mii_write(struct net_device *dev, int phy_id, int location, int value); + +void fs_mii_startup(struct net_device *dev); +void fs_mii_shutdown(struct net_device *dev); +void fs_mii_ack_int(struct net_device *dev); + +void fs_mii_link_status_change_check(struct net_device *dev, int init_media); + +void fs_init_bds(struct net_device *dev); +void fs_cleanup_bds(struct net_device *dev); + +/***************************************************************************/ + +#define DRV_MODULE_NAME "fs_enet" +#define PFX DRV_MODULE_NAME ": " +#define DRV_MODULE_VERSION "1.0" +#define DRV_MODULE_RELDATE "Aug 8, 2005" + +/***************************************************************************/ + +int fs_enet_platform_init(void); +void fs_enet_platform_cleanup(void); + +/***************************************************************************/ + +/* buffer descriptor access macros */ + +/* access macros */ +#if defined(CONFIG_CPM1) +/* for a a CPM1 __raw_xxx's are sufficient */ +#define __cbd_out32(addr, x) __raw_writel(x, addr) +#define __cbd_out16(addr, x) __raw_writew(x, addr) +#define __cbd_in32(addr) __raw_readl(addr) +#define __cbd_in16(addr) __raw_readw(addr) +#else +/* for others play it safe */ +#define __cbd_out32(addr, x) out_be32(addr, x) +#define __cbd_out16(addr, x) out_be16(addr, x) +#define __cbd_in32(addr) in_be32(addr) +#define __cbd_in16(addr) in_be16(addr) +#endif + +/* write */ +#define CBDW_SC(_cbd, _sc) __cbd_out16(&(_cbd)->cbd_sc, (_sc)) +#define CBDW_DATLEN(_cbd, _datlen) __cbd_out16(&(_cbd)->cbd_datlen, (_datlen)) +#define CBDW_BUFADDR(_cbd, _bufaddr) __cbd_out32(&(_cbd)->cbd_bufaddr, (_bufaddr)) + +/* read */ +#define CBDR_SC(_cbd) __cbd_in16(&(_cbd)->cbd_sc) +#define CBDR_DATLEN(_cbd) __cbd_in16(&(_cbd)->cbd_datlen) +#define CBDR_BUFADDR(_cbd) __cbd_in32(&(_cbd)->cbd_bufaddr) + +/* set bits */ +#define CBDS_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) | (_sc)) + +/* clear bits */ +#define CBDC_SC(_cbd, _sc) CBDW_SC(_cbd, CBDR_SC(_cbd) & ~(_sc)) + +/*******************************************************************/ + +extern const struct fs_ops fs_fec_ops; +extern const struct fs_ops fs_fcc_ops; +extern const struct fs_ops fs_scc_ops; + +/*******************************************************************/ + +/* handy pointer to the immap */ +extern void *fs_enet_immap; + +/*******************************************************************/ + +#endif diff --git a/drivers/net/fs_enet/mac-fcc.c b/drivers/net/fs_enet/mac-fcc.c new file mode 100644 index 0000000..a940b96 --- /dev/null +++ b/drivers/net/fs_enet/mac-fcc.c @@ -0,0 +1,578 @@ +/* + * FCC driver for Motorola MPC82xx (PQ2). + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> +#include <linux/fs.h> + +#include <asm/immap_cpm2.h> +#include <asm/mpc8260.h> +#include <asm/cpm2.h> + +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#include "fs_enet.h" + +/*************************************************/ + +/* FCC access macros */ + +#define __fcc_out32(addr, x) out_be32((unsigned *)addr, x) +#define __fcc_out16(addr, x) out_be16((unsigned short *)addr, x) +#define __fcc_out8(addr, x) out_8((unsigned char *)addr, x) +#define __fcc_in32(addr) in_be32((unsigned *)addr) +#define __fcc_in16(addr) in_be16((unsigned short *)addr) +#define __fcc_in8(addr) in_8((unsigned char *)addr) + +/* parameter space */ + +/* write, read, set bits, clear bits */ +#define W32(_p, _m, _v) __fcc_out32(&(_p)->_m, (_v)) +#define R32(_p, _m) __fcc_in32(&(_p)->_m) +#define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v)) +#define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v)) + +#define W16(_p, _m, _v) __fcc_out16(&(_p)->_m, (_v)) +#define R16(_p, _m) __fcc_in16(&(_p)->_m) +#define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v)) +#define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v)) + +#define W8(_p, _m, _v) __fcc_out8(&(_p)->_m, (_v)) +#define R8(_p, _m) __fcc_in8(&(_p)->_m) +#define S8(_p, _m, _v) W8(_p, _m, R8(_p, _m) | (_v)) +#define C8(_p, _m, _v) W8(_p, _m, R8(_p, _m) & ~(_v)) + +/*************************************************/ + +#define FCC_MAX_MULTICAST_ADDRS 64 + +#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) +#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff)) +#define mk_mii_end 0 + +#define MAX_CR_CMD_LOOPS 10000 + +static inline int fcc_cr_cmd(struct fs_enet_private *fep, u32 mcn, u32 op) +{ + const struct fs_platform_info *fpi = fep->fpi; + + cpm2_map_t *immap = fs_enet_immap; + cpm_cpm2_t *cpmp = &immap->im_cpm; + u32 v; + int i; + + /* Currently I don't know what feature call will look like. But + I guess there'd be something like do_cpm_cmd() which will require page & sblock */ + v = mk_cr_cmd(fpi->cp_page, fpi->cp_block, mcn, op); + W32(cpmp, cp_cpcr, v | CPM_CR_FLG); + for (i = 0; i < MAX_CR_CMD_LOOPS; i++) + if ((R32(cpmp, cp_cpcr) & CPM_CR_FLG) == 0) + break; + + if (i >= MAX_CR_CMD_LOOPS) { + printk(KERN_ERR "%s(): Not able to issue CPM command\n", + __FUNCTION__); + return 1; + } + + return 0; +} + +static int do_pd_setup(struct fs_enet_private *fep) +{ + struct platform_device *pdev = to_platform_device(fep->dev); + struct resource *r; + + /* Fill out IRQ field */ + fep->interrupt = platform_get_irq(pdev, 0); + + /* Attach the memory for the FCC Parameter RAM */ + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_pram"); + fep->fcc.ep = (void *)r->start; + + if (fep->fcc.ep == NULL) + return -EINVAL; + + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "fcc_regs"); + fep->fcc.fccp = (void *)r->start; + + if (fep->fcc.fccp == NULL) + return -EINVAL; + + fep->fcc.fcccp = (void *)fep->fpi->fcc_regs_c; + + if (fep->fcc.fcccp == NULL) + return -EINVAL; + + return 0; +} + +#define FCC_NAPI_RX_EVENT_MSK (FCC_ENET_RXF | FCC_ENET_RXB) +#define FCC_RX_EVENT (FCC_ENET_RXF) +#define FCC_TX_EVENT (FCC_ENET_TXB) +#define FCC_ERR_EVENT_MSK (FCC_ENET_TXE | FCC_ENET_BSY) + +static int setup_data(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + fep->fcc.idx = fs_get_fcc_index(fpi->fs_no); + if ((unsigned int)fep->fcc.idx >= 3) /* max 3 FCCs */ + return -EINVAL; + + fep->fcc.mem = (void *)fpi->mem_offset; + + if (do_pd_setup(fep) != 0) + return -EINVAL; + + fep->ev_napi_rx = FCC_NAPI_RX_EVENT_MSK; + fep->ev_rx = FCC_RX_EVENT; + fep->ev_tx = FCC_TX_EVENT; + fep->ev_err = FCC_ERR_EVENT_MSK; + + return 0; +} + +static int allocate_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + fep->ring_base = dma_alloc_coherent(fep->dev, + (fpi->tx_ring + fpi->rx_ring) * + sizeof(cbd_t), &fep->ring_mem_addr, + GFP_KERNEL); + if (fep->ring_base == NULL) + return -ENOMEM; + + return 0; +} + +static void free_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + if (fep->ring_base) + dma_free_coherent(fep->dev, + (fpi->tx_ring + fpi->rx_ring) * sizeof(cbd_t), + fep->ring_base, fep->ring_mem_addr); +} + +static void cleanup_data(struct net_device *dev) +{ + /* nothing */ +} + +static void set_promiscuous_mode(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + S32(fccp, fcc_fpsmr, FCC_PSMR_PRO); +} + +static void set_multicast_start(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_enet_t *ep = fep->fcc.ep; + + W32(ep, fen_gaddrh, 0); + W32(ep, fen_gaddrl, 0); +} + +static void set_multicast_one(struct net_device *dev, const u8 *mac) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_enet_t *ep = fep->fcc.ep; + u16 taddrh, taddrm, taddrl; + + taddrh = ((u16)mac[5] << 8) | mac[4]; + taddrm = ((u16)mac[3] << 8) | mac[2]; + taddrl = ((u16)mac[1] << 8) | mac[0]; + + W16(ep, fen_taddrh, taddrh); + W16(ep, fen_taddrm, taddrm); + W16(ep, fen_taddrl, taddrl); + fcc_cr_cmd(fep, 0x0C, CPM_CR_SET_GADDR); +} + +static void set_multicast_finish(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + fcc_enet_t *ep = fep->fcc.ep; + + /* clear promiscuous always */ + C32(fccp, fcc_fpsmr, FCC_PSMR_PRO); + + /* if all multi or too many multicasts; just enable all */ + if ((dev->flags & IFF_ALLMULTI) != 0 || + dev->mc_count > FCC_MAX_MULTICAST_ADDRS) { + + W32(ep, fen_gaddrh, 0xffffffff); + W32(ep, fen_gaddrl, 0xffffffff); + } + + /* read back */ + fep->fcc.gaddrh = R32(ep, fen_gaddrh); + fep->fcc.gaddrl = R32(ep, fen_gaddrl); +} + +static void set_multicast_list(struct net_device *dev) +{ + struct dev_mc_list *pmc; + + if ((dev->flags & IFF_PROMISC) == 0) { + set_multicast_start(dev); + for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) + set_multicast_one(dev, pmc->dmi_addr); + set_multicast_finish(dev); + } else + set_promiscuous_mode(dev); +} + +static void restart(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + fcc_t *fccp = fep->fcc.fccp; + fcc_c_t *fcccp = fep->fcc.fcccp; + fcc_enet_t *ep = fep->fcc.ep; + dma_addr_t rx_bd_base_phys, tx_bd_base_phys; + u16 paddrh, paddrm, paddrl; + u16 mem_addr; + const unsigned char *mac; + int i; + + C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); + + /* clear everything (slow & steady does it) */ + for (i = 0; i < sizeof(*ep); i++) + __fcc_out8((char *)ep + i, 0); + + /* get physical address */ + rx_bd_base_phys = fep->ring_mem_addr; + tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring; + + /* point to bds */ + W32(ep, fen_genfcc.fcc_rbase, rx_bd_base_phys); + W32(ep, fen_genfcc.fcc_tbase, tx_bd_base_phys); + + /* Set maximum bytes per receive buffer. + * It must be a multiple of 32. + */ + W16(ep, fen_genfcc.fcc_mrblr, PKT_MAXBLR_SIZE); + + W32(ep, fen_genfcc.fcc_rstate, (CPMFCR_GBL | CPMFCR_EB) << 24); + W32(ep, fen_genfcc.fcc_tstate, (CPMFCR_GBL | CPMFCR_EB) << 24); + + /* Allocate space in the reserved FCC area of DPRAM for the + * internal buffers. No one uses this space (yet), so we + * can do this. Later, we will add resource management for + * this area. + */ + + mem_addr = (u32) fep->fcc.mem; /* de-fixup dpram offset */ + + W16(ep, fen_genfcc.fcc_riptr, (mem_addr & 0xffff)); + W16(ep, fen_genfcc.fcc_tiptr, ((mem_addr + 32) & 0xffff)); + W16(ep, fen_padptr, mem_addr + 64); + + /* fill with special symbol... */ + memset(fep->fcc.mem + fpi->dpram_offset + 64, 0x88, 32); + + W32(ep, fen_genfcc.fcc_rbptr, 0); + W32(ep, fen_genfcc.fcc_tbptr, 0); + W32(ep, fen_genfcc.fcc_rcrc, 0); + W32(ep, fen_genfcc.fcc_tcrc, 0); + W16(ep, fen_genfcc.fcc_res1, 0); + W32(ep, fen_genfcc.fcc_res2, 0); + + /* no CAM */ + W32(ep, fen_camptr, 0); + + /* Set CRC preset and mask */ + W32(ep, fen_cmask, 0xdebb20e3); + W32(ep, fen_cpres, 0xffffffff); + + W32(ep, fen_crcec, 0); /* CRC Error counter */ + W32(ep, fen_alec, 0); /* alignment error counter */ + W32(ep, fen_disfc, 0); /* discard frame counter */ + W16(ep, fen_retlim, 15); /* Retry limit threshold */ + W16(ep, fen_pper, 0); /* Normal persistence */ + + /* set group address */ + W32(ep, fen_gaddrh, fep->fcc.gaddrh); + W32(ep, fen_gaddrl, fep->fcc.gaddrh); + + /* Clear hash filter tables */ + W32(ep, fen_iaddrh, 0); + W32(ep, fen_iaddrl, 0); + + /* Clear the Out-of-sequence TxBD */ + W16(ep, fen_tfcstat, 0); + W16(ep, fen_tfclen, 0); + W32(ep, fen_tfcptr, 0); + + W16(ep, fen_mflr, PKT_MAXBUF_SIZE); /* maximum frame length register */ + W16(ep, fen_minflr, PKT_MINBUF_SIZE); /* minimum frame length register */ + + /* set address */ + mac = dev->dev_addr; + paddrh = ((u16)mac[5] << 8) | mac[4]; + paddrm = ((u16)mac[3] << 8) | mac[2]; + paddrl = ((u16)mac[1] << 8) | mac[0]; + + W16(ep, fen_paddrh, paddrh); + W16(ep, fen_paddrm, paddrm); + W16(ep, fen_paddrl, paddrl); + + W16(ep, fen_taddrh, 0); + W16(ep, fen_taddrm, 0); + W16(ep, fen_taddrl, 0); + + W16(ep, fen_maxd1, 1520); /* maximum DMA1 length */ + W16(ep, fen_maxd2, 1520); /* maximum DMA2 length */ + + /* Clear stat counters, in case we ever enable RMON */ + W32(ep, fen_octc, 0); + W32(ep, fen_colc, 0); + W32(ep, fen_broc, 0); + W32(ep, fen_mulc, 0); + W32(ep, fen_uspc, 0); + W32(ep, fen_frgc, 0); + W32(ep, fen_ospc, 0); + W32(ep, fen_jbrc, 0); + W32(ep, fen_p64c, 0); + W32(ep, fen_p65c, 0); + W32(ep, fen_p128c, 0); + W32(ep, fen_p256c, 0); + W32(ep, fen_p512c, 0); + W32(ep, fen_p1024c, 0); + + W16(ep, fen_rfthr, 0); /* Suggested by manual */ + W16(ep, fen_rfcnt, 0); + W16(ep, fen_cftype, 0); + + fs_init_bds(dev); + + /* adjust to speed (for RMII mode) */ + if (fpi->use_rmii) { + if (fep->speed == 100) + C8(fcccp, fcc_gfemr, 0x20); + else + S8(fcccp, fcc_gfemr, 0x20); + } + + fcc_cr_cmd(fep, 0x0c, CPM_CR_INIT_TRX); + + /* clear events */ + W16(fccp, fcc_fcce, 0xffff); + + /* Enable interrupts we wish to service */ + W16(fccp, fcc_fccm, FCC_ENET_TXE | FCC_ENET_RXF | FCC_ENET_TXB); + + /* Set GFMR to enable Ethernet operating mode */ + W32(fccp, fcc_gfmr, FCC_GFMR_TCI | FCC_GFMR_MODE_ENET); + + /* set sync/delimiters */ + W16(fccp, fcc_fdsr, 0xd555); + + W32(fccp, fcc_fpsmr, FCC_PSMR_ENCRC); + + if (fpi->use_rmii) + S32(fccp, fcc_fpsmr, FCC_PSMR_RMII); + + /* adjust to duplex mode */ + if (fep->duplex) + S32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB); + else + C32(fccp, fcc_fpsmr, FCC_PSMR_FDE | FCC_PSMR_LPB); + + S32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); +} + +static void stop(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + /* stop ethernet */ + C32(fccp, fcc_gfmr, FCC_GFMR_ENR | FCC_GFMR_ENT); + + /* clear events */ + W16(fccp, fcc_fcce, 0xffff); + + /* clear interrupt mask */ + W16(fccp, fcc_fccm, 0); + + fs_cleanup_bds(dev); +} + +static void pre_request_irq(struct net_device *dev, int irq) +{ + /* nothing */ +} + +static void post_free_irq(struct net_device *dev, int irq) +{ + /* nothing */ +} + +static void napi_clear_rx_event(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + W16(fccp, fcc_fcce, FCC_NAPI_RX_EVENT_MSK); +} + +static void napi_enable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + S16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK); +} + +static void napi_disable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + C16(fccp, fcc_fccm, FCC_NAPI_RX_EVENT_MSK); +} + +static void rx_bd_done(struct net_device *dev) +{ + /* nothing */ +} + +static void tx_kickstart(struct net_device *dev) +{ + /* nothing */ +} + +static u32 get_int_events(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + return (u32)R16(fccp, fcc_fcce); +} + +static void clear_int_events(struct net_device *dev, u32 int_events) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + W16(fccp, fcc_fcce, int_events & 0xffff); +} + +static void ev_error(struct net_device *dev, u32 int_events) +{ + printk(KERN_WARNING DRV_MODULE_NAME + ": %s FS_ENET ERROR(s) 0x%x\n", dev->name, int_events); +} + +int get_regs(struct net_device *dev, void *p, int *sizep) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (*sizep < sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t)) + return -EINVAL; + + memcpy_fromio(p, fep->fcc.fccp, sizeof(fcc_t)); + p = (char *)p + sizeof(fcc_t); + + memcpy_fromio(p, fep->fcc.fcccp, sizeof(fcc_c_t)); + p = (char *)p + sizeof(fcc_c_t); + + memcpy_fromio(p, fep->fcc.ep, sizeof(fcc_enet_t)); + + return 0; +} + +int get_regs_len(struct net_device *dev) +{ + return sizeof(fcc_t) + sizeof(fcc_c_t) + sizeof(fcc_enet_t); +} + +/* Some transmit errors cause the transmitter to shut + * down. We now issue a restart transmit. Since the + * errors close the BD and update the pointers, the restart + * _should_ pick up without having to reset any of our + * pointers either. Also, To workaround 8260 device erratum + * CPM37, we must disable and then re-enable the transmitter + * following a Late Collision, Underrun, or Retry Limit error. + */ +void tx_restart(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fcc_t *fccp = fep->fcc.fccp; + + C32(fccp, fcc_gfmr, FCC_GFMR_ENT); + udelay(10); + S32(fccp, fcc_gfmr, FCC_GFMR_ENT); + + fcc_cr_cmd(fep, 0x0C, CPM_CR_RESTART_TX); +} + +/*************************************************************************/ + +const struct fs_ops fs_fcc_ops = { + .setup_data = setup_data, + .cleanup_data = cleanup_data, + .set_multicast_list = set_multicast_list, + .restart = restart, + .stop = stop, + .pre_request_irq = pre_request_irq, + .post_free_irq = post_free_irq, + .napi_clear_rx_event = napi_clear_rx_event, + .napi_enable_rx = napi_enable_rx, + .napi_disable_rx = napi_disable_rx, + .rx_bd_done = rx_bd_done, + .tx_kickstart = tx_kickstart, + .get_int_events = get_int_events, + .clear_int_events = clear_int_events, + .ev_error = ev_error, + .get_regs = get_regs, + .get_regs_len = get_regs_len, + .tx_restart = tx_restart, + .allocate_bd = allocate_bd, + .free_bd = free_bd, +}; diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c new file mode 100644 index 0000000..5ef4e84 --- /dev/null +++ b/drivers/net/fs_enet/mac-fec.c @@ -0,0 +1,653 @@ +/* + * Freescale Ethernet controllers + * + * Copyright (c) 2005 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> +#include <linux/fs.h> + +#include <asm/irq.h> +#include <asm/uaccess.h> + +#ifdef CONFIG_8xx +#include <asm/8xx_immap.h> +#include <asm/pgtable.h> +#include <asm/mpc8xx.h> +#include <asm/commproc.h> +#endif + +#include "fs_enet.h" + +/*************************************************/ + +#if defined(CONFIG_CPM1) +/* for a CPM1 __raw_xxx's are sufficient */ +#define __fs_out32(addr, x) __raw_writel(x, addr) +#define __fs_out16(addr, x) __raw_writew(x, addr) +#define __fs_in32(addr) __raw_readl(addr) +#define __fs_in16(addr) __raw_readw(addr) +#else +/* for others play it safe */ +#define __fs_out32(addr, x) out_be32(addr, x) +#define __fs_out16(addr, x) out_be16(addr, x) +#define __fs_in32(addr) in_be32(addr) +#define __fs_in16(addr) in_be16(addr) +#endif + +/* write */ +#define FW(_fecp, _reg, _v) __fs_out32(&(_fecp)->fec_ ## _reg, (_v)) + +/* read */ +#define FR(_fecp, _reg) __fs_in32(&(_fecp)->fec_ ## _reg) + +/* set bits */ +#define FS(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) | (_v)) + +/* clear bits */ +#define FC(_fecp, _reg, _v) FW(_fecp, _reg, FR(_fecp, _reg) & ~(_v)) + + +/* CRC polynomium used by the FEC for the multicast group filtering */ +#define FEC_CRC_POLY 0x04C11DB7 + +#define FEC_MAX_MULTICAST_ADDRS 64 + +/* Interrupt events/masks. +*/ +#define FEC_ENET_HBERR 0x80000000U /* Heartbeat error */ +#define FEC_ENET_BABR 0x40000000U /* Babbling receiver */ +#define FEC_ENET_BABT 0x20000000U /* Babbling transmitter */ +#define FEC_ENET_GRA 0x10000000U /* Graceful stop complete */ +#define FEC_ENET_TXF 0x08000000U /* Full frame transmitted */ +#define FEC_ENET_TXB 0x04000000U /* A buffer was transmitted */ +#define FEC_ENET_RXF 0x02000000U /* Full frame received */ +#define FEC_ENET_RXB 0x01000000U /* A buffer was received */ +#define FEC_ENET_MII 0x00800000U /* MII interrupt */ +#define FEC_ENET_EBERR 0x00400000U /* SDMA bus error */ + +#define FEC_ECNTRL_PINMUX 0x00000004 +#define FEC_ECNTRL_ETHER_EN 0x00000002 +#define FEC_ECNTRL_RESET 0x00000001 + +#define FEC_RCNTRL_BC_REJ 0x00000010 +#define FEC_RCNTRL_PROM 0x00000008 +#define FEC_RCNTRL_MII_MODE 0x00000004 +#define FEC_RCNTRL_DRT 0x00000002 +#define FEC_RCNTRL_LOOP 0x00000001 + +#define FEC_TCNTRL_FDEN 0x00000004 +#define FEC_TCNTRL_HBC 0x00000002 +#define FEC_TCNTRL_GTS 0x00000001 + + +/* Make MII read/write commands for the FEC. +*/ +#define mk_mii_read(REG) (0x60020000 | ((REG & 0x1f) << 18)) +#define mk_mii_write(REG, VAL) (0x50020000 | ((REG & 0x1f) << 18) | (VAL & 0xffff)) +#define mk_mii_end 0 + +#define FEC_MII_LOOPS 10000 + +/* + * Delay to wait for FEC reset command to complete (in us) + */ +#define FEC_RESET_DELAY 50 + +static int whack_reset(fec_t * fecp) +{ + int i; + + FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_RESET); + for (i = 0; i < FEC_RESET_DELAY; i++) { + if ((FR(fecp, ecntrl) & FEC_ECNTRL_RESET) == 0) + return 0; /* OK */ + udelay(1); + } + + return -1; +} + +static int do_pd_setup(struct fs_enet_private *fep) +{ + struct platform_device *pdev = to_platform_device(fep->dev); + struct resource *r; + + /* Fill out IRQ field */ + fep->interrupt = platform_get_irq_byname(pdev,"interrupt"); + + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + fep->fec.fecp =(void*)r->start; + + if(fep->fec.fecp == NULL) + return -EINVAL; + + return 0; + +} + +#define FEC_NAPI_RX_EVENT_MSK (FEC_ENET_RXF | FEC_ENET_RXB) +#define FEC_RX_EVENT (FEC_ENET_RXF) +#define FEC_TX_EVENT (FEC_ENET_TXF) +#define FEC_ERR_EVENT_MSK (FEC_ENET_HBERR | FEC_ENET_BABR | \ + FEC_ENET_BABT | FEC_ENET_EBERR) + +static int setup_data(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (do_pd_setup(fep) != 0) + return -EINVAL; + + fep->fec.hthi = 0; + fep->fec.htlo = 0; + + fep->ev_napi_rx = FEC_NAPI_RX_EVENT_MSK; + fep->ev_rx = FEC_RX_EVENT; + fep->ev_tx = FEC_TX_EVENT; + fep->ev_err = FEC_ERR_EVENT_MSK; + + return 0; +} + +static int allocate_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + fep->ring_base = dma_alloc_coherent(fep->dev, + (fpi->tx_ring + fpi->rx_ring) * + sizeof(cbd_t), &fep->ring_mem_addr, + GFP_KERNEL); + if (fep->ring_base == NULL) + return -ENOMEM; + + return 0; +} + +static void free_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + if(fep->ring_base) + dma_free_coherent(fep->dev, (fpi->tx_ring + fpi->rx_ring) + * sizeof(cbd_t), + fep->ring_base, + fep->ring_mem_addr); +} + +static void cleanup_data(struct net_device *dev) +{ + /* nothing */ +} + +static void set_promiscuous_mode(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FS(fecp, r_cntrl, FEC_RCNTRL_PROM); +} + +static void set_multicast_start(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + fep->fec.hthi = 0; + fep->fec.htlo = 0; +} + +static void set_multicast_one(struct net_device *dev, const u8 *mac) +{ + struct fs_enet_private *fep = netdev_priv(dev); + int temp, hash_index, i, j; + u32 crc, csrVal; + u8 byte, msb; + + crc = 0xffffffff; + for (i = 0; i < 6; i++) { + byte = mac[i]; + for (j = 0; j < 8; j++) { + msb = crc >> 31; + crc <<= 1; + if (msb ^ (byte & 0x1)) + crc ^= FEC_CRC_POLY; + byte >>= 1; + } + } + + temp = (crc & 0x3f) >> 1; + hash_index = ((temp & 0x01) << 4) | + ((temp & 0x02) << 2) | + ((temp & 0x04)) | + ((temp & 0x08) >> 2) | + ((temp & 0x10) >> 4); + csrVal = 1 << hash_index; + if (crc & 1) + fep->fec.hthi |= csrVal; + else + fep->fec.htlo |= csrVal; +} + +static void set_multicast_finish(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + /* if all multi or too many multicasts; just enable all */ + if ((dev->flags & IFF_ALLMULTI) != 0 || + dev->mc_count > FEC_MAX_MULTICAST_ADDRS) { + fep->fec.hthi = 0xffffffffU; + fep->fec.htlo = 0xffffffffU; + } + + FC(fecp, r_cntrl, FEC_RCNTRL_PROM); + FW(fecp, hash_table_high, fep->fec.hthi); + FW(fecp, hash_table_low, fep->fec.htlo); +} + +static void set_multicast_list(struct net_device *dev) +{ + struct dev_mc_list *pmc; + + if ((dev->flags & IFF_PROMISC) == 0) { + set_multicast_start(dev); + for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) + set_multicast_one(dev, pmc->dmi_addr); + set_multicast_finish(dev); + } else + set_promiscuous_mode(dev); +} + +static void restart(struct net_device *dev) +{ +#ifdef CONFIG_DUET + immap_t *immap = fs_enet_immap; + u32 cptr; +#endif + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + const struct fs_platform_info *fpi = fep->fpi; + dma_addr_t rx_bd_base_phys, tx_bd_base_phys; + int r; + u32 addrhi, addrlo; + + r = whack_reset(fep->fec.fecp); + if (r != 0) + printk(KERN_ERR DRV_MODULE_NAME + ": %s FEC Reset FAILED!\n", dev->name); + + /* + * Set station address. + */ + addrhi = ((u32) dev->dev_addr[0] << 24) | + ((u32) dev->dev_addr[1] << 16) | + ((u32) dev->dev_addr[2] << 8) | + (u32) dev->dev_addr[3]; + addrlo = ((u32) dev->dev_addr[4] << 24) | + ((u32) dev->dev_addr[5] << 16); + FW(fecp, addr_low, addrhi); + FW(fecp, addr_high, addrlo); + + /* + * Reset all multicast. + */ + FW(fecp, hash_table_high, fep->fec.hthi); + FW(fecp, hash_table_low, fep->fec.htlo); + + /* + * Set maximum receive buffer size. + */ + FW(fecp, r_buff_size, PKT_MAXBLR_SIZE); + FW(fecp, r_hash, PKT_MAXBUF_SIZE); + + /* get physical address */ + rx_bd_base_phys = fep->ring_mem_addr; + tx_bd_base_phys = rx_bd_base_phys + sizeof(cbd_t) * fpi->rx_ring; + + /* + * Set receive and transmit descriptor base. + */ + FW(fecp, r_des_start, rx_bd_base_phys); + FW(fecp, x_des_start, tx_bd_base_phys); + + fs_init_bds(dev); + + /* + * Enable big endian and don't care about SDMA FC. + */ + FW(fecp, fun_code, 0x78000000); + + /* + * Set MII speed. + */ + FW(fecp, mii_speed, fep->mii_bus->fec.mii_speed); + + /* + * Clear any outstanding interrupt. + */ + FW(fecp, ievent, 0xffc0); + FW(fecp, ivec, (fep->interrupt / 2) << 29); + + + /* + * adjust to speed (only for DUET & RMII) + */ +#ifdef CONFIG_DUET + if (fpi->use_rmii) { + cptr = in_be32(&immap->im_cpm.cp_cptr); + switch (fs_get_fec_index(fpi->fs_no)) { + case 0: + cptr |= 0x100; + if (fep->speed == 10) + cptr |= 0x0000010; + else if (fep->speed == 100) + cptr &= ~0x0000010; + break; + case 1: + cptr |= 0x80; + if (fep->speed == 10) + cptr |= 0x0000008; + else if (fep->speed == 100) + cptr &= ~0x0000008; + break; + default: + BUG(); /* should never happen */ + break; + } + out_be32(&immap->im_cpm.cp_cptr, cptr); + } +#endif + + FW(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ + /* + * adjust to duplex mode + */ + if (fep->duplex) { + FC(fecp, r_cntrl, FEC_RCNTRL_DRT); + FS(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD enable */ + } else { + FS(fecp, r_cntrl, FEC_RCNTRL_DRT); + FC(fecp, x_cntrl, FEC_TCNTRL_FDEN); /* FD disable */ + } + + /* + * Enable interrupts we wish to service. + */ + FW(fecp, imask, FEC_ENET_TXF | FEC_ENET_TXB | + FEC_ENET_RXF | FEC_ENET_RXB); + + /* + * And last, enable the transmit and receive processing. + */ + FW(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); + FW(fecp, r_des_active, 0x01000000); +} + +static void stop(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + struct fs_enet_mii_bus *bus = fep->mii_bus; + const struct fs_mii_bus_info *bi = bus->bus_info; + int i; + + if ((FR(fecp, ecntrl) & FEC_ECNTRL_ETHER_EN) == 0) + return; /* already down */ + + FW(fecp, x_cntrl, 0x01); /* Graceful transmit stop */ + for (i = 0; ((FR(fecp, ievent) & 0x10000000) == 0) && + i < FEC_RESET_DELAY; i++) + udelay(1); + + if (i == FEC_RESET_DELAY) + printk(KERN_WARNING DRV_MODULE_NAME + ": %s FEC timeout on graceful transmit stop\n", + dev->name); + /* + * Disable FEC. Let only MII interrupts. + */ + FW(fecp, imask, 0); + FC(fecp, ecntrl, FEC_ECNTRL_ETHER_EN); + + fs_cleanup_bds(dev); + + /* shut down FEC1? that's where the mii bus is */ + if (fep->fec.idx == 0 && bus->refs > 1 && bi->method == fsmii_fec) { + FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ + FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); + FW(fecp, ievent, FEC_ENET_MII); + FW(fecp, mii_speed, bus->fec.mii_speed); + } +} + +static void pre_request_irq(struct net_device *dev, int irq) +{ + immap_t *immap = fs_enet_immap; + u32 siel; + + /* SIU interrupt */ + if (irq >= SIU_IRQ0 && irq < SIU_LEVEL7) { + + siel = in_be32(&immap->im_siu_conf.sc_siel); + if ((irq & 1) == 0) + siel |= (0x80000000 >> irq); + else + siel &= ~(0x80000000 >> (irq & ~1)); + out_be32(&immap->im_siu_conf.sc_siel, siel); + } +} + +static void post_free_irq(struct net_device *dev, int irq) +{ + /* nothing */ +} + +static void napi_clear_rx_event(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FW(fecp, ievent, FEC_NAPI_RX_EVENT_MSK); +} + +static void napi_enable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FS(fecp, imask, FEC_NAPI_RX_EVENT_MSK); +} + +static void napi_disable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FC(fecp, imask, FEC_NAPI_RX_EVENT_MSK); +} + +static void rx_bd_done(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FW(fecp, r_des_active, 0x01000000); +} + +static void tx_kickstart(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FW(fecp, x_des_active, 0x01000000); +} + +static u32 get_int_events(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + return FR(fecp, ievent) & FR(fecp, imask); +} + +static void clear_int_events(struct net_device *dev, u32 int_events) +{ + struct fs_enet_private *fep = netdev_priv(dev); + fec_t *fecp = fep->fec.fecp; + + FW(fecp, ievent, int_events); +} + +static void ev_error(struct net_device *dev, u32 int_events) +{ + printk(KERN_WARNING DRV_MODULE_NAME + ": %s FEC ERROR(s) 0x%x\n", dev->name, int_events); +} + +int get_regs(struct net_device *dev, void *p, int *sizep) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (*sizep < sizeof(fec_t)) + return -EINVAL; + + memcpy_fromio(p, fep->fec.fecp, sizeof(fec_t)); + + return 0; +} + +int get_regs_len(struct net_device *dev) +{ + return sizeof(fec_t); +} + +void tx_restart(struct net_device *dev) +{ + /* nothing */ +} + +/*************************************************************************/ + +const struct fs_ops fs_fec_ops = { + .setup_data = setup_data, + .cleanup_data = cleanup_data, + .set_multicast_list = set_multicast_list, + .restart = restart, + .stop = stop, + .pre_request_irq = pre_request_irq, + .post_free_irq = post_free_irq, + .napi_clear_rx_event = napi_clear_rx_event, + .napi_enable_rx = napi_enable_rx, + .napi_disable_rx = napi_disable_rx, + .rx_bd_done = rx_bd_done, + .tx_kickstart = tx_kickstart, + .get_int_events = get_int_events, + .clear_int_events = clear_int_events, + .ev_error = ev_error, + .get_regs = get_regs, + .get_regs_len = get_regs_len, + .tx_restart = tx_restart, + .allocate_bd = allocate_bd, + .free_bd = free_bd, +}; + +/***********************************************************************/ + +static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location) +{ + fec_t *fecp = bus->fec.fecp; + int i, ret = -1; + + if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0) + BUG(); + + /* Add PHY address to register command. */ + FW(fecp, mii_data, (phy_id << 23) | mk_mii_read(location)); + + for (i = 0; i < FEC_MII_LOOPS; i++) + if ((FR(fecp, ievent) & FEC_ENET_MII) != 0) + break; + + if (i < FEC_MII_LOOPS) { + FW(fecp, ievent, FEC_ENET_MII); + ret = FR(fecp, mii_data) & 0xffff; + } + + return ret; +} + +static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int value) +{ + fec_t *fecp = bus->fec.fecp; + int i; + + /* this must never happen */ + if ((FR(fecp, r_cntrl) & FEC_RCNTRL_MII_MODE) == 0) + BUG(); + + /* Add PHY address to register command. */ + FW(fecp, mii_data, (phy_id << 23) | mk_mii_write(location, value)); + + for (i = 0; i < FEC_MII_LOOPS; i++) + if ((FR(fecp, ievent) & FEC_ENET_MII) != 0) + break; + + if (i < FEC_MII_LOOPS) + FW(fecp, ievent, FEC_ENET_MII); +} + +int fs_mii_fec_init(struct fs_enet_mii_bus *bus) +{ + bd_t *bd = (bd_t *)__res; + const struct fs_mii_bus_info *bi = bus->bus_info; + fec_t *fecp; + + if (bi->id != 0) + return -1; + + bus->fec.fecp = &((immap_t *)fs_enet_immap)->im_cpm.cp_fec; + bus->fec.mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) + & 0x3F) << 1; + + fecp = bus->fec.fecp; + + FS(fecp, r_cntrl, FEC_RCNTRL_MII_MODE); /* MII enable */ + FS(fecp, ecntrl, FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN); + FW(fecp, ievent, FEC_ENET_MII); + FW(fecp, mii_speed, bus->fec.mii_speed); + + bus->mii_read = mii_read; + bus->mii_write = mii_write; + + return 0; +} diff --git a/drivers/net/fs_enet/mac-scc.c b/drivers/net/fs_enet/mac-scc.c new file mode 100644 index 0000000..d8c6e9c --- /dev/null +++ b/drivers/net/fs_enet/mac-scc.c @@ -0,0 +1,524 @@ +/* + * Ethernet on Serial Communications Controller (SCC) driver for Motorola MPC8xx and MPC82xx. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> +#include <linux/fs.h> + +#include <asm/irq.h> +#include <asm/uaccess.h> + +#ifdef CONFIG_8xx +#include <asm/8xx_immap.h> +#include <asm/pgtable.h> +#include <asm/mpc8xx.h> +#include <asm/commproc.h> +#endif + +#include "fs_enet.h" + +/*************************************************/ + +#if defined(CONFIG_CPM1) +/* for a 8xx __raw_xxx's are sufficient */ +#define __fs_out32(addr, x) __raw_writel(x, addr) +#define __fs_out16(addr, x) __raw_writew(x, addr) +#define __fs_out8(addr, x) __raw_writeb(x, addr) +#define __fs_in32(addr) __raw_readl(addr) +#define __fs_in16(addr) __raw_readw(addr) +#define __fs_in8(addr) __raw_readb(addr) +#else +/* for others play it safe */ +#define __fs_out32(addr, x) out_be32(addr, x) +#define __fs_out16(addr, x) out_be16(addr, x) +#define __fs_in32(addr) in_be32(addr) +#define __fs_in16(addr) in_be16(addr) +#endif + +/* write, read, set bits, clear bits */ +#define W32(_p, _m, _v) __fs_out32(&(_p)->_m, (_v)) +#define R32(_p, _m) __fs_in32(&(_p)->_m) +#define S32(_p, _m, _v) W32(_p, _m, R32(_p, _m) | (_v)) +#define C32(_p, _m, _v) W32(_p, _m, R32(_p, _m) & ~(_v)) + +#define W16(_p, _m, _v) __fs_out16(&(_p)->_m, (_v)) +#define R16(_p, _m) __fs_in16(&(_p)->_m) +#define S16(_p, _m, _v) W16(_p, _m, R16(_p, _m) | (_v)) +#define C16(_p, _m, _v) W16(_p, _m, R16(_p, _m) & ~(_v)) + +#define W8(_p, _m, _v) __fs_out8(&(_p)->_m, (_v)) +#define R8(_p, _m) __fs_in8(&(_p)->_m) +#define S8(_p, _m, _v) W8(_p, _m, R8(_p, _m) | (_v)) +#define C8(_p, _m, _v) W8(_p, _m, R8(_p, _m) & ~(_v)) + +#define SCC_MAX_MULTICAST_ADDRS 64 + +/* + * Delay to wait for SCC reset command to complete (in us) + */ +#define SCC_RESET_DELAY 50 +#define MAX_CR_CMD_LOOPS 10000 + +static inline int scc_cr_cmd(struct fs_enet_private *fep, u32 op) +{ + cpm8xx_t *cpmp = &((immap_t *)fs_enet_immap)->im_cpm; + u32 v, ch; + int i = 0; + + ch = fep->scc.idx << 2; + v = mk_cr_cmd(ch, op); + W16(cpmp, cp_cpcr, v | CPM_CR_FLG); + for (i = 0; i < MAX_CR_CMD_LOOPS; i++) + if ((R16(cpmp, cp_cpcr) & CPM_CR_FLG) == 0) + break; + + if (i >= MAX_CR_CMD_LOOPS) { + printk(KERN_ERR "%s(): Not able to issue CPM command\n", + __FUNCTION__); + return 1; + } + return 0; +} + +static int do_pd_setup(struct fs_enet_private *fep) +{ + struct platform_device *pdev = to_platform_device(fep->dev); + struct resource *r; + + /* Fill out IRQ field */ + fep->interrupt = platform_get_irq_byname(pdev, "interrupt"); + + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); + fep->scc.sccp = (void *)r->start; + + if (fep->scc.sccp == NULL) + return -EINVAL; + + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pram"); + fep->scc.ep = (void *)r->start; + + if (fep->scc.ep == NULL) + return -EINVAL; + + return 0; +} + +#define SCC_NAPI_RX_EVENT_MSK (SCCE_ENET_RXF | SCCE_ENET_RXB) +#define SCC_RX_EVENT (SCCE_ENET_RXF) +#define SCC_TX_EVENT (SCCE_ENET_TXB) +#define SCC_ERR_EVENT_MSK (SCCE_ENET_TXE | SCCE_ENET_BSY) + +static int setup_data(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + fep->scc.idx = fs_get_scc_index(fpi->fs_no); + if ((unsigned int)fep->fcc.idx > 4) /* max 4 SCCs */ + return -EINVAL; + + do_pd_setup(fep); + + fep->scc.hthi = 0; + fep->scc.htlo = 0; + + fep->ev_napi_rx = SCC_NAPI_RX_EVENT_MSK; + fep->ev_rx = SCC_RX_EVENT; + fep->ev_tx = SCC_TX_EVENT; + fep->ev_err = SCC_ERR_EVENT_MSK; + + return 0; +} + +static int allocate_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + const struct fs_platform_info *fpi = fep->fpi; + + fep->ring_mem_addr = cpm_dpalloc((fpi->tx_ring + fpi->rx_ring) * + sizeof(cbd_t), 8); + if (IS_DPERR(fep->ring_mem_addr)) + return -ENOMEM; + + fep->ring_base = cpm_dpram_addr(fep->ring_mem_addr); + + return 0; +} + +static void free_bd(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (fep->ring_base) + cpm_dpfree(fep->ring_mem_addr); +} + +static void cleanup_data(struct net_device *dev) +{ + /* nothing */ +} + +static void set_promiscuous_mode(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + S16(sccp, scc_psmr, SCC_PSMR_PRO); +} + +static void set_multicast_start(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_enet_t *ep = fep->scc.ep; + + W16(ep, sen_gaddr1, 0); + W16(ep, sen_gaddr2, 0); + W16(ep, sen_gaddr3, 0); + W16(ep, sen_gaddr4, 0); +} + +static void set_multicast_one(struct net_device *dev, const u8 * mac) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_enet_t *ep = fep->scc.ep; + u16 taddrh, taddrm, taddrl; + + taddrh = ((u16) mac[5] << 8) | mac[4]; + taddrm = ((u16) mac[3] << 8) | mac[2]; + taddrl = ((u16) mac[1] << 8) | mac[0]; + + W16(ep, sen_taddrh, taddrh); + W16(ep, sen_taddrm, taddrm); + W16(ep, sen_taddrl, taddrl); + scc_cr_cmd(fep, CPM_CR_SET_GADDR); +} + +static void set_multicast_finish(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + scc_enet_t *ep = fep->scc.ep; + + /* clear promiscuous always */ + C16(sccp, scc_psmr, SCC_PSMR_PRO); + + /* if all multi or too many multicasts; just enable all */ + if ((dev->flags & IFF_ALLMULTI) != 0 || + dev->mc_count > SCC_MAX_MULTICAST_ADDRS) { + + W16(ep, sen_gaddr1, 0xffff); + W16(ep, sen_gaddr2, 0xffff); + W16(ep, sen_gaddr3, 0xffff); + W16(ep, sen_gaddr4, 0xffff); + } +} + +static void set_multicast_list(struct net_device *dev) +{ + struct dev_mc_list *pmc; + + if ((dev->flags & IFF_PROMISC) == 0) { + set_multicast_start(dev); + for (pmc = dev->mc_list; pmc != NULL; pmc = pmc->next) + set_multicast_one(dev, pmc->dmi_addr); + set_multicast_finish(dev); + } else + set_promiscuous_mode(dev); +} + +/* + * This function is called to start or restart the FEC during a link + * change. This only happens when switching between half and full + * duplex. + */ +static void restart(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + scc_enet_t *ep = fep->scc.ep; + const struct fs_platform_info *fpi = fep->fpi; + u16 paddrh, paddrm, paddrl; + const unsigned char *mac; + int i; + + C32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); + + /* clear everything (slow & steady does it) */ + for (i = 0; i < sizeof(*ep); i++) + __fs_out8((char *)ep + i, 0); + + /* point to bds */ + W16(ep, sen_genscc.scc_rbase, fep->ring_mem_addr); + W16(ep, sen_genscc.scc_tbase, + fep->ring_mem_addr + sizeof(cbd_t) * fpi->rx_ring); + + /* Initialize function code registers for big-endian. + */ + W8(ep, sen_genscc.scc_rfcr, SCC_EB); + W8(ep, sen_genscc.scc_tfcr, SCC_EB); + + /* Set maximum bytes per receive buffer. + * This appears to be an Ethernet frame size, not the buffer + * fragment size. It must be a multiple of four. + */ + W16(ep, sen_genscc.scc_mrblr, 0x5f0); + + /* Set CRC preset and mask. + */ + W32(ep, sen_cpres, 0xffffffff); + W32(ep, sen_cmask, 0xdebb20e3); + + W32(ep, sen_crcec, 0); /* CRC Error counter */ + W32(ep, sen_alec, 0); /* alignment error counter */ + W32(ep, sen_disfc, 0); /* discard frame counter */ + + W16(ep, sen_pads, 0x8888); /* Tx short frame pad character */ + W16(ep, sen_retlim, 15); /* Retry limit threshold */ + + W16(ep, sen_maxflr, 0x5ee); /* maximum frame length register */ + + W16(ep, sen_minflr, PKT_MINBUF_SIZE); /* minimum frame length register */ + + W16(ep, sen_maxd1, 0x000005f0); /* maximum DMA1 length */ + W16(ep, sen_maxd2, 0x000005f0); /* maximum DMA2 length */ + + /* Clear hash tables. + */ + W16(ep, sen_gaddr1, 0); + W16(ep, sen_gaddr2, 0); + W16(ep, sen_gaddr3, 0); + W16(ep, sen_gaddr4, 0); + W16(ep, sen_iaddr1, 0); + W16(ep, sen_iaddr2, 0); + W16(ep, sen_iaddr3, 0); + W16(ep, sen_iaddr4, 0); + + /* set address + */ + mac = dev->dev_addr; + paddrh = ((u16) mac[5] << 8) | mac[4]; + paddrm = ((u16) mac[3] << 8) | mac[2]; + paddrl = ((u16) mac[1] << 8) | mac[0]; + + W16(ep, sen_paddrh, paddrh); + W16(ep, sen_paddrm, paddrm); + W16(ep, sen_paddrl, paddrl); + + W16(ep, sen_pper, 0); + W16(ep, sen_taddrl, 0); + W16(ep, sen_taddrm, 0); + W16(ep, sen_taddrh, 0); + + fs_init_bds(dev); + + scc_cr_cmd(fep, CPM_CR_INIT_TRX); + + W16(sccp, scc_scce, 0xffff); + + /* Enable interrupts we wish to service. + */ + W16(sccp, scc_sccm, SCCE_ENET_TXE | SCCE_ENET_RXF | SCCE_ENET_TXB); + + /* Set GSMR_H to enable all normal operating modes. + * Set GSMR_L to enable Ethernet to MC68160. + */ + W32(sccp, scc_gsmrh, 0); + W32(sccp, scc_gsmrl, + SCC_GSMRL_TCI | SCC_GSMRL_TPL_48 | SCC_GSMRL_TPP_10 | + SCC_GSMRL_MODE_ENET); + + /* Set sync/delimiters. + */ + W16(sccp, scc_dsr, 0xd555); + + /* Set processing mode. Use Ethernet CRC, catch broadcast, and + * start frame search 22 bit times after RENA. + */ + W16(sccp, scc_psmr, SCC_PSMR_ENCRC | SCC_PSMR_NIB22); + + /* Set full duplex mode if needed */ + if (fep->duplex) + S16(sccp, scc_psmr, SCC_PSMR_LPB | SCC_PSMR_FDE); + + S32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); +} + +static void stop(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + int i; + + for (i = 0; (R16(sccp, scc_sccm) == 0) && i < SCC_RESET_DELAY; i++) + udelay(1); + + if (i == SCC_RESET_DELAY) + printk(KERN_WARNING DRV_MODULE_NAME + ": %s SCC timeout on graceful transmit stop\n", + dev->name); + + W16(sccp, scc_sccm, 0); + C32(sccp, scc_gsmrl, SCC_GSMRL_ENR | SCC_GSMRL_ENT); + + fs_cleanup_bds(dev); +} + +static void pre_request_irq(struct net_device *dev, int irq) +{ + immap_t *immap = fs_enet_immap; + u32 siel; + + /* SIU interrupt */ + if (irq >= SIU_IRQ0 && irq < SIU_LEVEL7) { + + siel = in_be32(&immap->im_siu_conf.sc_siel); + if ((irq & 1) == 0) + siel |= (0x80000000 >> irq); + else + siel &= ~(0x80000000 >> (irq & ~1)); + out_be32(&immap->im_siu_conf.sc_siel, siel); + } +} + +static void post_free_irq(struct net_device *dev, int irq) +{ + /* nothing */ +} + +static void napi_clear_rx_event(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + W16(sccp, scc_scce, SCC_NAPI_RX_EVENT_MSK); +} + +static void napi_enable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + S16(sccp, scc_sccm, SCC_NAPI_RX_EVENT_MSK); +} + +static void napi_disable_rx(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + C16(sccp, scc_sccm, SCC_NAPI_RX_EVENT_MSK); +} + +static void rx_bd_done(struct net_device *dev) +{ + /* nothing */ +} + +static void tx_kickstart(struct net_device *dev) +{ + /* nothing */ +} + +static u32 get_int_events(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + return (u32) R16(sccp, scc_scce); +} + +static void clear_int_events(struct net_device *dev, u32 int_events) +{ + struct fs_enet_private *fep = netdev_priv(dev); + scc_t *sccp = fep->scc.sccp; + + W16(sccp, scc_scce, int_events & 0xffff); +} + +static void ev_error(struct net_device *dev, u32 int_events) +{ + printk(KERN_WARNING DRV_MODULE_NAME + ": %s SCC ERROR(s) 0x%x\n", dev->name, int_events); +} + +static int get_regs(struct net_device *dev, void *p, int *sizep) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + if (*sizep < sizeof(scc_t) + sizeof(scc_enet_t)) + return -EINVAL; + + memcpy_fromio(p, fep->scc.sccp, sizeof(scc_t)); + p = (char *)p + sizeof(scc_t); + + memcpy_fromio(p, fep->scc.ep, sizeof(scc_enet_t)); + + return 0; +} + +static int get_regs_len(struct net_device *dev) +{ + return sizeof(scc_t) + sizeof(scc_enet_t); +} + +static void tx_restart(struct net_device *dev) +{ + struct fs_enet_private *fep = netdev_priv(dev); + + scc_cr_cmd(fep, CPM_CR_RESTART_TX); +} + +/*************************************************************************/ + +const struct fs_ops fs_scc_ops = { + .setup_data = setup_data, + .cleanup_data = cleanup_data, + .set_multicast_list = set_multicast_list, + .restart = restart, + .stop = stop, + .pre_request_irq = pre_request_irq, + .post_free_irq = post_free_irq, + .napi_clear_rx_event = napi_clear_rx_event, + .napi_enable_rx = napi_enable_rx, + .napi_disable_rx = napi_disable_rx, + .rx_bd_done = rx_bd_done, + .tx_kickstart = tx_kickstart, + .get_int_events = get_int_events, + .clear_int_events = clear_int_events, + .ev_error = ev_error, + .get_regs = get_regs, + .get_regs_len = get_regs_len, + .tx_restart = tx_restart, + .allocate_bd = allocate_bd, + .free_bd = free_bd, +}; diff --git a/drivers/net/fs_enet/mii-bitbang.c b/drivers/net/fs_enet/mii-bitbang.c new file mode 100644 index 0000000..24a5e2e --- /dev/null +++ b/drivers/net/fs_enet/mii-bitbang.c @@ -0,0 +1,405 @@ +/* + * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> + +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#include "fs_enet.h" + +#ifdef CONFIG_8xx +static int bitbang_prep_bit(u8 **dirp, u8 **datp, u8 *mskp, int port, int bit) +{ + immap_t *im = (immap_t *)fs_enet_immap; + void *dir, *dat, *ppar; + int adv; + u8 msk; + + switch (port) { + case fsiop_porta: + dir = &im->im_ioport.iop_padir; + dat = &im->im_ioport.iop_padat; + ppar = &im->im_ioport.iop_papar; + break; + + case fsiop_portb: + dir = &im->im_cpm.cp_pbdir; + dat = &im->im_cpm.cp_pbdat; + ppar = &im->im_cpm.cp_pbpar; + break; + + case fsiop_portc: + dir = &im->im_ioport.iop_pcdir; + dat = &im->im_ioport.iop_pcdat; + ppar = &im->im_ioport.iop_pcpar; + break; + + case fsiop_portd: + dir = &im->im_ioport.iop_pddir; + dat = &im->im_ioport.iop_pddat; + ppar = &im->im_ioport.iop_pdpar; + break; + + case fsiop_porte: + dir = &im->im_cpm.cp_pedir; + dat = &im->im_cpm.cp_pedat; + ppar = &im->im_cpm.cp_pepar; + break; + + default: + printk(KERN_ERR DRV_MODULE_NAME + "Illegal port value %d!\n", port); + return -EINVAL; + } + + adv = bit >> 3; + dir = (char *)dir + adv; + dat = (char *)dat + adv; + ppar = (char *)ppar + adv; + + msk = 1 << (7 - (bit & 7)); + if ((in_8(ppar) & msk) != 0) { + printk(KERN_ERR DRV_MODULE_NAME + "pin %d on port %d is not general purpose!\n", bit, port); + return -EINVAL; + } + + *dirp = dir; + *datp = dat; + *mskp = msk; + + return 0; +} +#endif + +#ifdef CONFIG_8260 +static int bitbang_prep_bit(u8 **dirp, u8 **datp, u8 *mskp, int port, int bit) +{ + iop_cpm2_t *io = &((cpm2_map_t *)fs_enet_immap)->im_ioport; + void *dir, *dat, *ppar; + int adv; + u8 msk; + + switch (port) { + case fsiop_porta: + dir = &io->iop_pdira; + dat = &io->iop_pdata; + ppar = &io->iop_ppara; + break; + + case fsiop_portb: + dir = &io->iop_pdirb; + dat = &io->iop_pdatb; + ppar = &io->iop_pparb; + break; + + case fsiop_portc: + dir = &io->iop_pdirc; + dat = &io->iop_pdatc; + ppar = &io->iop_pparc; + break; + + case fsiop_portd: + dir = &io->iop_pdird; + dat = &io->iop_pdatd; + ppar = &io->iop_ppard; + break; + + default: + printk(KERN_ERR DRV_MODULE_NAME + "Illegal port value %d!\n", port); + return -EINVAL; + } + + adv = bit >> 3; + dir = (char *)dir + adv; + dat = (char *)dat + adv; + ppar = (char *)ppar + adv; + + msk = 1 << (7 - (bit & 7)); + if ((in_8(ppar) & msk) != 0) { + printk(KERN_ERR DRV_MODULE_NAME + "pin %d on port %d is not general purpose!\n", bit, port); + return -EINVAL; + } + + *dirp = dir; + *datp = dat; + *mskp = msk; + + return 0; +} +#endif + +static inline void bb_set(u8 *p, u8 m) +{ + out_8(p, in_8(p) | m); +} + +static inline void bb_clr(u8 *p, u8 m) +{ + out_8(p, in_8(p) & ~m); +} + +static inline int bb_read(u8 *p, u8 m) +{ + return (in_8(p) & m) != 0; +} + +static inline void mdio_active(struct fs_enet_mii_bus *bus) +{ + bb_set(bus->bitbang.mdio_dir, bus->bitbang.mdio_msk); +} + +static inline void mdio_tristate(struct fs_enet_mii_bus *bus) +{ + bb_clr(bus->bitbang.mdio_dir, bus->bitbang.mdio_msk); +} + +static inline int mdio_read(struct fs_enet_mii_bus *bus) +{ + return bb_read(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk); +} + +static inline void mdio(struct fs_enet_mii_bus *bus, int what) +{ + if (what) + bb_set(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk); + else + bb_clr(bus->bitbang.mdio_dat, bus->bitbang.mdio_msk); +} + +static inline void mdc(struct fs_enet_mii_bus *bus, int what) +{ + if (what) + bb_set(bus->bitbang.mdc_dat, bus->bitbang.mdc_msk); + else + bb_clr(bus->bitbang.mdc_dat, bus->bitbang.mdc_msk); +} + +static inline void mii_delay(struct fs_enet_mii_bus *bus) +{ + udelay(bus->bus_info->i.bitbang.delay); +} + +/* Utility to send the preamble, address, and register (common to read and write). */ +static void bitbang_pre(struct fs_enet_mii_bus *bus, int read, u8 addr, u8 reg) +{ + int j; + + /* + * Send a 32 bit preamble ('1's) with an extra '1' bit for good measure. + * The IEEE spec says this is a PHY optional requirement. The AMD + * 79C874 requires one after power up and one after a MII communications + * error. This means that we are doing more preambles than we need, + * but it is safer and will be much more robust. + */ + + mdio_active(bus); + mdio(bus, 1); + for (j = 0; j < 32; j++) { + mdc(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + } + + /* send the start bit (01) and the read opcode (10) or write (10) */ + mdc(bus, 0); + mdio(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + mdc(bus, 0); + mdio(bus, 1); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + mdc(bus, 0); + mdio(bus, read); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + mdc(bus, 0); + mdio(bus, !read); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + + /* send the PHY address */ + for (j = 0; j < 5; j++) { + mdc(bus, 0); + mdio(bus, (addr & 0x10) != 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + addr <<= 1; + } + + /* send the register address */ + for (j = 0; j < 5; j++) { + mdc(bus, 0); + mdio(bus, (reg & 0x10) != 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + reg <<= 1; + } +} + +static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location) +{ + u16 rdreg; + int ret, j; + u8 addr = phy_id & 0xff; + u8 reg = location & 0xff; + + bitbang_pre(bus, 1, addr, reg); + + /* tri-state our MDIO I/O pin so we can read */ + mdc(bus, 0); + mdio_tristate(bus); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + + /* check the turnaround bit: the PHY should be driving it to zero */ + if (mdio_read(bus) != 0) { + /* PHY didn't drive TA low */ + for (j = 0; j < 32; j++) { + mdc(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + } + ret = -1; + goto out; + } + + mdc(bus, 0); + mii_delay(bus); + + /* read 16 bits of register data, MSB first */ + rdreg = 0; + for (j = 0; j < 16; j++) { + mdc(bus, 1); + mii_delay(bus); + rdreg <<= 1; + rdreg |= mdio_read(bus); + mdc(bus, 0); + mii_delay(bus); + } + + mdc(bus, 1); + mii_delay(bus); + mdc(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + + ret = rdreg; +out: + return ret; +} + +static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int val) +{ + int j; + u8 addr = phy_id & 0xff; + u8 reg = location & 0xff; + u16 value = val & 0xffff; + + bitbang_pre(bus, 0, addr, reg); + + /* send the turnaround (10) */ + mdc(bus, 0); + mdio(bus, 1); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + mdc(bus, 0); + mdio(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + + /* write 16 bits of register data, MSB first */ + for (j = 0; j < 16; j++) { + mdc(bus, 0); + mdio(bus, (value & 0x8000) != 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); + value <<= 1; + } + + /* + * Tri-state the MDIO line. + */ + mdio_tristate(bus); + mdc(bus, 0); + mii_delay(bus); + mdc(bus, 1); + mii_delay(bus); +} + +int fs_mii_bitbang_init(struct fs_enet_mii_bus *bus) +{ + const struct fs_mii_bus_info *bi = bus->bus_info; + int r; + + r = bitbang_prep_bit(&bus->bitbang.mdio_dir, + &bus->bitbang.mdio_dat, + &bus->bitbang.mdio_msk, + bi->i.bitbang.mdio_port, + bi->i.bitbang.mdio_bit); + if (r != 0) + return r; + + r = bitbang_prep_bit(&bus->bitbang.mdc_dir, + &bus->bitbang.mdc_dat, + &bus->bitbang.mdc_msk, + bi->i.bitbang.mdc_port, + bi->i.bitbang.mdc_bit); + if (r != 0) + return r; + + bus->mii_read = mii_read; + bus->mii_write = mii_write; + + return 0; +} diff --git a/drivers/net/fs_enet/mii-fixed.c b/drivers/net/fs_enet/mii-fixed.c new file mode 100644 index 0000000..b3e192d --- /dev/null +++ b/drivers/net/fs_enet/mii-fixed.c @@ -0,0 +1,92 @@ +/* + * Combined Ethernet driver for Motorola MPC8xx and MPC82xx. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + + +#include <linux/config.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/string.h> +#include <linux/ptrace.h> +#include <linux/errno.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/spinlock.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/bitops.h> + +#include <asm/pgtable.h> +#include <asm/irq.h> +#include <asm/uaccess.h> + +#include "fs_enet.h" + +static const u16 mii_regs[7] = { + 0x3100, + 0x786d, + 0x0fff, + 0x0fff, + 0x01e1, + 0x45e1, + 0x0003, +}; + +static int mii_read(struct fs_enet_mii_bus *bus, int phy_id, int location) +{ + int ret = 0; + + if ((unsigned int)location >= ARRAY_SIZE(mii_regs)) + return -1; + + if (location != 5) + ret = mii_regs[location]; + else + ret = bus->fixed.lpa; + + return ret; +} + +static void mii_write(struct fs_enet_mii_bus *bus, int phy_id, int location, int val) +{ + /* do nothing */ +} + +int fs_mii_fixed_init(struct fs_enet_mii_bus *bus) +{ + const struct fs_mii_bus_info *bi = bus->bus_info; + + bus->fixed.lpa = 0x45e1; /* default 100Mb, full duplex */ + + /* if speed is fixed at 10Mb, remove 100Mb modes */ + if (bi->i.fixed.speed == 10) + bus->fixed.lpa &= ~LPA_100; + + /* if duplex is half, remove full duplex modes */ + if (bi->i.fixed.duplex == 0) + bus->fixed.lpa &= ~LPA_DUPLEX; + + bus->mii_read = mii_read; + bus->mii_write = mii_write; + + return 0; +} diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c index 85d6dc0..3e9accf 100644 --- a/drivers/net/hamradio/mkiss.c +++ b/drivers/net/hamradio/mkiss.c @@ -390,10 +390,8 @@ static void ax_changedmtu(struct mkiss *ax) "MTU change cancelled.\n", ax->dev->name); dev->mtu = ax->mtu; - if (xbuff != NULL) - kfree(xbuff); - if (rbuff != NULL) - kfree(rbuff); + kfree(xbuff); + kfree(rbuff); return; } diff --git a/drivers/net/ibm_emac/Makefile b/drivers/net/ibm_emac/Makefile index 7f583a3..f98ddf0 100644 --- a/drivers/net/ibm_emac/Makefile +++ b/drivers/net/ibm_emac/Makefile @@ -1,12 +1,11 @@ # -# Makefile for the IBM PPC4xx EMAC controllers +# Makefile for the PowerPC 4xx on-chip ethernet driver # obj-$(CONFIG_IBM_EMAC) += ibm_emac.o -ibm_emac-objs := ibm_emac_mal.o ibm_emac_core.o ibm_emac_phy.o - -# Only need this if you want to see additional debug messages -ifeq ($(CONFIG_IBM_EMAC_ERRMSG), y) -ibm_emac-objs += ibm_emac_debug.o -endif +ibm_emac-objs := ibm_emac_mal.o ibm_emac_core.o ibm_emac_phy.o +ibm_emac-$(CONFIG_IBM_EMAC_ZMII) += ibm_emac_zmii.o +ibm_emac-$(CONFIG_IBM_EMAC_RGMII) += ibm_emac_rgmii.o +ibm_emac-$(CONFIG_IBM_EMAC_TAH) += ibm_emac_tah.o +ibm_emac-$(CONFIG_IBM_EMAC_DEBUG) += ibm_emac_debug.o diff --git a/drivers/net/ibm_emac/ibm_emac.h b/drivers/net/ibm_emac/ibm_emac.h index 15d5a0e..28c476f 100644 --- a/drivers/net/ibm_emac/ibm_emac.h +++ b/drivers/net/ibm_emac/ibm_emac.h @@ -1,110 +1,142 @@ /* - * ibm_emac.h + * drivers/net/ibm_emac/ibm_emac.h * + * Register definitions for PowerPC 4xx on-chip ethernet contoller * - * Armin Kuster akuster@mvista.com - * June, 2002 + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * - * Copyright 2002 MontaVista Softare Inc. + * Based on original work by + * Matt Porter <mporter@kernel.crashing.org> + * Armin Kuster <akuster@mvista.com> + * Copyright 2002-2004 MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. + * */ +#ifndef __IBM_EMAC_H_ +#define __IBM_EMAC_H_ + +#include <linux/config.h> +#include <linux/types.h> + +/* This is a simple check to prevent use of this driver on non-tested SoCs */ +#if !defined(CONFIG_405GP) && !defined(CONFIG_405GPR) && !defined(CONFIG_405EP) && \ + !defined(CONFIG_440GP) && !defined(CONFIG_440GX) && !defined(CONFIG_440SP) && \ + !defined(CONFIG_440EP) && !defined(CONFIG_NP405H) +#error "Unknown SoC. Please, check chip user manual and make sure EMAC defines are OK" +#endif + +/* EMAC registers Write Access rules */ +struct emac_regs { + u32 mr0; /* special */ + u32 mr1; /* Reset */ + u32 tmr0; /* special */ + u32 tmr1; /* special */ + u32 rmr; /* Reset */ + u32 isr; /* Always */ + u32 iser; /* Reset */ + u32 iahr; /* Reset, R, T */ + u32 ialr; /* Reset, R, T */ + u32 vtpid; /* Reset, R, T */ + u32 vtci; /* Reset, R, T */ + u32 ptr; /* Reset, T */ + u32 iaht1; /* Reset, R */ + u32 iaht2; /* Reset, R */ + u32 iaht3; /* Reset, R */ + u32 iaht4; /* Reset, R */ + u32 gaht1; /* Reset, R */ + u32 gaht2; /* Reset, R */ + u32 gaht3; /* Reset, R */ + u32 gaht4; /* Reset, R */ + u32 lsah; + u32 lsal; + u32 ipgvr; /* Reset, T */ + u32 stacr; /* special */ + u32 trtr; /* special */ + u32 rwmr; /* Reset */ + u32 octx; + u32 ocrx; + u32 ipcr; +}; + +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_ETHTOOL_REGS_VER 0 +#define EMAC_ETHTOOL_REGS_SIZE (sizeof(struct emac_regs) - sizeof(u32)) +#else +#define EMAC_ETHTOOL_REGS_VER 1 +#define EMAC_ETHTOOL_REGS_SIZE sizeof(struct emac_regs) +#endif -#ifndef _IBM_EMAC_H_ -#define _IBM_EMAC_H_ -/* General defines needed for the driver */ +/* EMACx_MR0 */ +#define EMAC_MR0_RXI 0x80000000 +#define EMAC_MR0_TXI 0x40000000 +#define EMAC_MR0_SRST 0x20000000 +#define EMAC_MR0_TXE 0x10000000 +#define EMAC_MR0_RXE 0x08000000 +#define EMAC_MR0_WKE 0x04000000 -/* Emac */ -typedef struct emac_regs { - u32 em0mr0; - u32 em0mr1; - u32 em0tmr0; - u32 em0tmr1; - u32 em0rmr; - u32 em0isr; - u32 em0iser; - u32 em0iahr; - u32 em0ialr; - u32 em0vtpid; - u32 em0vtci; - u32 em0ptr; - u32 em0iaht1; - u32 em0iaht2; - u32 em0iaht3; - u32 em0iaht4; - u32 em0gaht1; - u32 em0gaht2; - u32 em0gaht3; - u32 em0gaht4; - u32 em0lsah; - u32 em0lsal; - u32 em0ipgvr; - u32 em0stacr; - u32 em0trtr; - u32 em0rwmr; -} emac_t; +/* EMACx_MR1 */ +#define EMAC_MR1_FDE 0x80000000 +#define EMAC_MR1_ILE 0x40000000 +#define EMAC_MR1_VLE 0x20000000 +#define EMAC_MR1_EIFC 0x10000000 +#define EMAC_MR1_APP 0x08000000 +#define EMAC_MR1_IST 0x01000000 -/* MODE REG 0 */ -#define EMAC_M0_RXI 0x80000000 -#define EMAC_M0_TXI 0x40000000 -#define EMAC_M0_SRST 0x20000000 -#define EMAC_M0_TXE 0x10000000 -#define EMAC_M0_RXE 0x08000000 -#define EMAC_M0_WKE 0x04000000 +#define EMAC_MR1_MF_MASK 0x00c00000 +#define EMAC_MR1_MF_10 0x00000000 +#define EMAC_MR1_MF_100 0x00400000 +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_MR1_MF_1000 0x00000000 +#define EMAC_MR1_MF_1000GPCS 0x00000000 +#define EMAC_MR1_MF_IPPA(id) 0x00000000 +#else +#define EMAC_MR1_MF_1000 0x00800000 +#define EMAC_MR1_MF_1000GPCS 0x00c00000 +#define EMAC_MR1_MF_IPPA(id) (((id) & 0x1f) << 6) +#endif -/* MODE Reg 1 */ -#define EMAC_M1_FDE 0x80000000 -#define EMAC_M1_ILE 0x40000000 -#define EMAC_M1_VLE 0x20000000 -#define EMAC_M1_EIFC 0x10000000 -#define EMAC_M1_APP 0x08000000 -#define EMAC_M1_AEMI 0x02000000 -#define EMAC_M1_IST 0x01000000 -#define EMAC_M1_MF_1000GPCS 0x00c00000 /* Internal GPCS */ -#define EMAC_M1_MF_1000MBPS 0x00800000 /* External GPCS */ -#define EMAC_M1_MF_100MBPS 0x00400000 -#define EMAC_M1_RFS_16K 0x00280000 /* 000 for 512 byte */ -#define EMAC_M1_TR 0x00008000 -#ifdef CONFIG_IBM_EMAC4 -#define EMAC_M1_RFS_8K 0x00200000 -#define EMAC_M1_RFS_4K 0x00180000 -#define EMAC_M1_RFS_2K 0x00100000 -#define EMAC_M1_RFS_1K 0x00080000 -#define EMAC_M1_TX_FIFO_16K 0x00050000 /* 0's for 512 byte */ -#define EMAC_M1_TX_FIFO_8K 0x00040000 -#define EMAC_M1_TX_FIFO_4K 0x00030000 -#define EMAC_M1_TX_FIFO_2K 0x00020000 -#define EMAC_M1_TX_FIFO_1K 0x00010000 -#define EMAC_M1_TX_TR 0x00008000 -#define EMAC_M1_TX_MWSW 0x00001000 /* 0 wait for status */ -#define EMAC_M1_JUMBO_ENABLE 0x00000800 /* Upt to 9Kr status */ -#define EMAC_M1_OPB_CLK_66 0x00000008 /* 66Mhz */ -#define EMAC_M1_OPB_CLK_83 0x00000010 /* 83Mhz */ -#define EMAC_M1_OPB_CLK_100 0x00000018 /* 100Mhz */ -#define EMAC_M1_OPB_CLK_100P 0x00000020 /* 100Mhz+ */ -#else /* CONFIG_IBM_EMAC4 */ -#define EMAC_M1_RFS_4K 0x00300000 /* ~4k for 512 byte */ -#define EMAC_M1_RFS_2K 0x00200000 -#define EMAC_M1_RFS_1K 0x00100000 -#define EMAC_M1_TX_FIFO_2K 0x00080000 /* 0's for 512 byte */ -#define EMAC_M1_TX_FIFO_1K 0x00040000 -#define EMAC_M1_TR0_DEPEND 0x00010000 /* 0'x for single packet */ -#define EMAC_M1_TR1_DEPEND 0x00004000 -#define EMAC_M1_TR1_MULTI 0x00002000 -#define EMAC_M1_JUMBO_ENABLE 0x00001000 -#endif /* CONFIG_IBM_EMAC4 */ -#define EMAC_M1_BASE (EMAC_M1_TX_FIFO_2K | \ - EMAC_M1_APP | \ - EMAC_M1_TR | EMAC_M1_VLE) +#define EMAC_TX_FIFO_SIZE 2048 -/* Transmit Mode Register 0 */ -#define EMAC_TMR0_GNP0 0x80000000 -#define EMAC_TMR0_GNP1 0x40000000 -#define EMAC_TMR0_GNPD 0x20000000 -#define EMAC_TMR0_FC 0x10000000 +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_MR1_RFS_4K 0x00300000 +#define EMAC_MR1_RFS_16K 0x00000000 +#define EMAC_RX_FIFO_SIZE(gige) 4096 +#define EMAC_MR1_TFS_2K 0x00080000 +#define EMAC_MR1_TR0_MULT 0x00008000 +#define EMAC_MR1_JPSM 0x00000000 +#define EMAC_MR1_BASE(opb) (EMAC_MR1_TFS_2K | EMAC_MR1_TR0_MULT) +#else +#define EMAC_MR1_RFS_4K 0x00180000 +#define EMAC_MR1_RFS_16K 0x00280000 +#define EMAC_RX_FIFO_SIZE(gige) ((gige) ? 16384 : 4096) +#define EMAC_MR1_TFS_2K 0x00020000 +#define EMAC_MR1_TR 0x00008000 +#define EMAC_MR1_MWSW_001 0x00001000 +#define EMAC_MR1_JPSM 0x00000800 +#define EMAC_MR1_OBCI_MASK 0x00000038 +#define EMAC_MR1_OBCI_50 0x00000000 +#define EMAC_MR1_OBCI_66 0x00000008 +#define EMAC_MR1_OBCI_83 0x00000010 +#define EMAC_MR1_OBCI_100 0x00000018 +#define EMAC_MR1_OBCI_100P 0x00000020 +#define EMAC_MR1_OBCI(freq) ((freq) <= 50 ? EMAC_MR1_OBCI_50 : \ + (freq) <= 66 ? EMAC_MR1_OBCI_66 : \ + (freq) <= 83 ? EMAC_MR1_OBCI_83 : \ + (freq) <= 100 ? EMAC_MR1_OBCI_100 : EMAC_MR1_OBCI_100P) +#define EMAC_MR1_BASE(opb) (EMAC_MR1_TFS_2K | EMAC_MR1_TR | \ + EMAC_MR1_MWSW_001 | EMAC_MR1_OBCI(opb)) +#endif + +/* EMACx_TMR0 */ +#define EMAC_TMR0_GNP 0x80000000 +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_TMR0_DEFAULT 0x00000000 +#else #define EMAC_TMR0_TFAE_2_32 0x00000001 #define EMAC_TMR0_TFAE_4_64 0x00000002 #define EMAC_TMR0_TFAE_8_128 0x00000003 @@ -112,14 +144,36 @@ typedef struct emac_regs { #define EMAC_TMR0_TFAE_32_512 0x00000005 #define EMAC_TMR0_TFAE_64_1024 0x00000006 #define EMAC_TMR0_TFAE_128_2048 0x00000007 +#define EMAC_TMR0_DEFAULT EMAC_TMR0_TFAE_2_32 +#endif +#define EMAC_TMR0_XMIT (EMAC_TMR0_GNP | EMAC_TMR0_DEFAULT) + +/* EMACx_TMR1 */ + +/* IBM manuals are not very clear here. + * This is my interpretation of how things are. --ebs + */ +#if defined(CONFIG_40x) +#define EMAC_FIFO_ENTRY_SIZE 8 +#define EMAC_MAL_BURST_SIZE (16 * 4) +#else +#define EMAC_FIFO_ENTRY_SIZE 16 +#define EMAC_MAL_BURST_SIZE (64 * 4) +#endif + +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_TMR1(l,h) (((l) << 27) | (((h) & 0xff) << 16)) +#else +#define EMAC_TMR1(l,h) (((l) << 27) | (((h) & 0x3ff) << 14)) +#endif -/* Receive Mode Register */ +/* EMACx_RMR */ #define EMAC_RMR_SP 0x80000000 #define EMAC_RMR_SFCS 0x40000000 -#define EMAC_RMR_ARRP 0x20000000 -#define EMAC_RMR_ARP 0x10000000 -#define EMAC_RMR_AROP 0x08000000 -#define EMAC_RMR_ARPI 0x04000000 +#define EMAC_RMR_RRP 0x20000000 +#define EMAC_RMR_RFP 0x10000000 +#define EMAC_RMR_ROP 0x08000000 +#define EMAC_RMR_RPIR 0x04000000 #define EMAC_RMR_PPP 0x02000000 #define EMAC_RMR_PME 0x01000000 #define EMAC_RMR_PMME 0x00800000 @@ -127,6 +181,9 @@ typedef struct emac_regs { #define EMAC_RMR_MIAE 0x00200000 #define EMAC_RMR_BAE 0x00100000 #define EMAC_RMR_MAE 0x00080000 +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_RMR_BASE 0x00000000 +#else #define EMAC_RMR_RFAF_2_32 0x00000001 #define EMAC_RMR_RFAF_4_64 0x00000002 #define EMAC_RMR_RFAF_8_128 0x00000003 @@ -134,9 +191,21 @@ typedef struct emac_regs { #define EMAC_RMR_RFAF_32_512 0x00000005 #define EMAC_RMR_RFAF_64_1024 0x00000006 #define EMAC_RMR_RFAF_128_2048 0x00000007 -#define EMAC_RMR_BASE (EMAC_RMR_IAE | EMAC_RMR_BAE) +#define EMAC_RMR_BASE EMAC_RMR_RFAF_128_2048 +#endif -/* Interrupt Status & enable Regs */ +/* EMACx_ISR & EMACx_ISER */ +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_ISR_TXPE 0x00000000 +#define EMAC_ISR_RXPE 0x00000000 +#define EMAC_ISR_TXUE 0x00000000 +#define EMAC_ISR_RXOE 0x00000000 +#else +#define EMAC_ISR_TXPE 0x20000000 +#define EMAC_ISR_RXPE 0x10000000 +#define EMAC_ISR_TXUE 0x08000000 +#define EMAC_ISR_RXOE 0x04000000 +#endif #define EMAC_ISR_OVR 0x02000000 #define EMAC_ISR_PP 0x01000000 #define EMAC_ISR_BP 0x00800000 @@ -147,53 +216,62 @@ typedef struct emac_regs { #define EMAC_ISR_PTLE 0x00040000 #define EMAC_ISR_ORE 0x00020000 #define EMAC_ISR_IRE 0x00010000 -#define EMAC_ISR_DBDM 0x00000200 -#define EMAC_ISR_DB0 0x00000100 -#define EMAC_ISR_SE0 0x00000080 -#define EMAC_ISR_TE0 0x00000040 -#define EMAC_ISR_DB1 0x00000020 -#define EMAC_ISR_SE1 0x00000010 -#define EMAC_ISR_TE1 0x00000008 +#define EMAC_ISR_SQE 0x00000080 +#define EMAC_ISR_TE 0x00000040 #define EMAC_ISR_MOS 0x00000002 #define EMAC_ISR_MOF 0x00000001 -/* STA CONTROL REG */ +/* EMACx_STACR */ +#define EMAC_STACR_PHYD_MASK 0xffff +#define EMAC_STACR_PHYD_SHIFT 16 #define EMAC_STACR_OC 0x00008000 #define EMAC_STACR_PHYE 0x00004000 -#define EMAC_STACR_WRITE 0x00002000 -#define EMAC_STACR_READ 0x00001000 -#define EMAC_STACR_CLK_83MHZ 0x00000800 /* 0's for 50Mhz */ -#define EMAC_STACR_CLK_66MHZ 0x00000400 -#define EMAC_STACR_CLK_100MHZ 0x00000C00 +#define EMAC_STACR_STAC_MASK 0x00003000 +#define EMAC_STACR_STAC_READ 0x00001000 +#define EMAC_STACR_STAC_WRITE 0x00002000 +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_STACR_OPBC_MASK 0x00000C00 +#define EMAC_STACR_OPBC_50 0x00000000 +#define EMAC_STACR_OPBC_66 0x00000400 +#define EMAC_STACR_OPBC_83 0x00000800 +#define EMAC_STACR_OPBC_100 0x00000C00 +#define EMAC_STACR_OPBC(freq) ((freq) <= 50 ? EMAC_STACR_OPBC_50 : \ + (freq) <= 66 ? EMAC_STACR_OPBC_66 : \ + (freq) <= 83 ? EMAC_STACR_OPBC_83 : EMAC_STACR_OPBC_100) +#define EMAC_STACR_BASE(opb) EMAC_STACR_OPBC(opb) +#else +#define EMAC_STACR_BASE(opb) 0x00000000 +#endif +#define EMAC_STACR_PCDA_MASK 0x1f +#define EMAC_STACR_PCDA_SHIFT 5 +#define EMAC_STACR_PRA_MASK 0x1f + +/* EMACx_TRTR */ +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_TRTR_SHIFT 27 +#else +#define EMAC_TRTR_SHIFT 24 +#endif +#define EMAC_TRTR(size) ((((size) >> 6) - 1) << EMAC_TRTR_SHIFT) -/* Transmit Request Threshold Register */ -#define EMAC_TRTR_1600 0x18000000 /* 0's for 64 Bytes */ -#define EMAC_TRTR_1024 0x0f000000 -#define EMAC_TRTR_512 0x07000000 -#define EMAC_TRTR_256 0x03000000 -#define EMAC_TRTR_192 0x10000000 -#define EMAC_TRTR_128 0x01000000 +/* EMACx_RWMR */ +#if !defined(CONFIG_IBM_EMAC4) +#define EMAC_RWMR(l,h) (((l) << 23) | ( ((h) & 0x1ff) << 7)) +#else +#define EMAC_RWMR(l,h) (((l) << 22) | ( ((h) & 0x3ff) << 6)) +#endif +/* EMAC specific TX descriptor control fields (write access) */ #define EMAC_TX_CTRL_GFCS 0x0200 #define EMAC_TX_CTRL_GP 0x0100 #define EMAC_TX_CTRL_ISA 0x0080 #define EMAC_TX_CTRL_RSA 0x0040 #define EMAC_TX_CTRL_IVT 0x0020 #define EMAC_TX_CTRL_RVT 0x0010 -#define EMAC_TX_CTRL_TAH_CSUM 0x000e /* TAH only */ -#define EMAC_TX_CTRL_TAH_SEG4 0x000a /* TAH only */ -#define EMAC_TX_CTRL_TAH_SEG3 0x0008 /* TAH only */ -#define EMAC_TX_CTRL_TAH_SEG2 0x0006 /* TAH only */ -#define EMAC_TX_CTRL_TAH_SEG1 0x0004 /* TAH only */ -#define EMAC_TX_CTRL_TAH_SEG0 0x0002 /* TAH only */ -#define EMAC_TX_CTRL_TAH_DIS 0x0000 /* TAH only */ +#define EMAC_TX_CTRL_TAH_CSUM 0x000e -#define EMAC_TX_CTRL_DFLT ( \ - MAL_TX_CTRL_INTR | EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP ) - -/* madmal transmit status / Control bits */ +/* EMAC specific TX descriptor status fields (read access) */ #define EMAC_TX_ST_BFCS 0x0200 -#define EMAC_TX_ST_BPP 0x0100 #define EMAC_TX_ST_LCS 0x0080 #define EMAC_TX_ST_ED 0x0040 #define EMAC_TX_ST_EC 0x0020 @@ -202,8 +280,16 @@ typedef struct emac_regs { #define EMAC_TX_ST_SC 0x0004 #define EMAC_TX_ST_UR 0x0002 #define EMAC_TX_ST_SQE 0x0001 +#if !defined(CONFIG_IBM_EMAC_TAH) +#define EMAC_IS_BAD_TX(v) ((v) & (EMAC_TX_ST_LCS | EMAC_TX_ST_ED | \ + EMAC_TX_ST_EC | EMAC_TX_ST_LC | \ + EMAC_TX_ST_MC | EMAC_TX_ST_UR)) +#else +#define EMAC_IS_BAD_TX(v) ((v) & (EMAC_TX_ST_LCS | EMAC_TX_ST_ED | \ + EMAC_TX_ST_EC | EMAC_TX_ST_LC)) +#endif -/* madmal receive status / Control bits */ +/* EMAC specific RX descriptor status fields (read access) */ #define EMAC_RX_ST_OE 0x0200 #define EMAC_RX_ST_PP 0x0100 #define EMAC_RX_ST_BP 0x0080 @@ -214,54 +300,10 @@ typedef struct emac_regs { #define EMAC_RX_ST_PTL 0x0004 #define EMAC_RX_ST_ORE 0x0002 #define EMAC_RX_ST_IRE 0x0001 -#define EMAC_BAD_RX_PACKET 0x02ff -#define EMAC_CSUM_VER_ERROR 0x0003 - -/* identify a bad rx packet dependent on emac features */ -#ifdef CONFIG_IBM_EMAC4 -#define EMAC_IS_BAD_RX_PACKET(desc) \ - (((desc & (EMAC_BAD_RX_PACKET & ~EMAC_CSUM_VER_ERROR)) || \ - ((desc & EMAC_CSUM_VER_ERROR) == EMAC_RX_ST_ORE) || \ - ((desc & EMAC_CSUM_VER_ERROR) == EMAC_RX_ST_IRE))) -#else -#define EMAC_IS_BAD_RX_PACKET(desc) \ - (desc & EMAC_BAD_RX_PACKET) -#endif - -/* SoC implementation specific EMAC register defaults */ -#if defined(CONFIG_440GP) -#define EMAC_RWMR_DEFAULT 0x80009000 -#define EMAC_TMR0_DEFAULT 0x00000000 -#define EMAC_TMR1_DEFAULT 0xf8640000 -#elif defined(CONFIG_440GX) -#define EMAC_RWMR_DEFAULT 0x1000a200 -#define EMAC_TMR0_DEFAULT EMAC_TMR0_TFAE_2_32 -#define EMAC_TMR1_DEFAULT 0xa00f0000 -#elif defined(CONFIG_440SP) -#define EMAC_RWMR_DEFAULT 0x08002000 -#define EMAC_TMR0_DEFAULT EMAC_TMR0_TFAE_128_2048 -#define EMAC_TMR1_DEFAULT 0xf8200000 -#else -#define EMAC_RWMR_DEFAULT 0x0f002000 -#define EMAC_TMR0_DEFAULT 0x00000000 -#define EMAC_TMR1_DEFAULT 0x380f0000 -#endif /* CONFIG_440GP */ - -/* Revision specific EMAC register defaults */ -#ifdef CONFIG_IBM_EMAC4 -#define EMAC_M1_DEFAULT (EMAC_M1_BASE | \ - EMAC_M1_OPB_CLK_83 | \ - EMAC_M1_TX_MWSW) -#define EMAC_RMR_DEFAULT (EMAC_RMR_BASE | \ - EMAC_RMR_RFAF_128_2048) -#define EMAC_TMR0_XMIT (EMAC_TMR0_GNP0 | \ - EMAC_TMR0_DEFAULT) -#define EMAC_TRTR_DEFAULT EMAC_TRTR_1024 -#else /* !CONFIG_IBM_EMAC4 */ -#define EMAC_M1_DEFAULT EMAC_M1_BASE -#define EMAC_RMR_DEFAULT EMAC_RMR_BASE -#define EMAC_TMR0_XMIT EMAC_TMR0_GNP0 -#define EMAC_TRTR_DEFAULT EMAC_TRTR_1600 -#endif /* CONFIG_IBM_EMAC4 */ - -#endif +#define EMAC_RX_TAH_BAD_CSUM 0x0003 +#define EMAC_BAD_RX_MASK (EMAC_RX_ST_OE | EMAC_RX_ST_BP | \ + EMAC_RX_ST_RP | EMAC_RX_ST_SE | \ + EMAC_RX_ST_AE | EMAC_RX_ST_BFCS | \ + EMAC_RX_ST_PTL | EMAC_RX_ST_ORE | \ + EMAC_RX_ST_IRE ) +#endif /* __IBM_EMAC_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_core.c b/drivers/net/ibm_emac/ibm_emac_core.c index 14e9b631..943fbd1 100644 --- a/drivers/net/ibm_emac/ibm_emac_core.c +++ b/drivers/net/ibm_emac/ibm_emac_core.c @@ -1,13 +1,14 @@ /* - * ibm_emac_core.c + * drivers/net/ibm_emac/ibm_emac_core.c * - * Ethernet driver for the built in ethernet on the IBM 4xx PowerPC - * processors. - * - * (c) 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org> + * Driver for PowerPC 4xx on-chip ethernet controller. * - * Based on original work by + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * + * Based on original work by + * Matt Porter <mporter@kernel.crashing.org> + * (c) 2003 Benjamin Herrenschmidt <benh@kernel.crashing.org> * Armin Kuster <akuster@mvista.com> * Johnnie Peters <jpeters@mvista.com> * @@ -15,29 +16,24 @@ * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. - * TODO - * - Check for races in the "remove" code path - * - Add some Power Management to the MAC and the PHY - * - Audit remaining of non-rewritten code (--BenH) - * - Cleanup message display using msglevel mecanism - * - Address all errata - * - Audit all register update paths to ensure they - * are being written post soft reset if required. + * */ + +#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/string.h> -#include <linux/timer.h> -#include <linux/ptrace.h> #include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/types.h> -#include <linux/dma-mapping.h> +#include <linux/pci.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/skbuff.h> +#include <linux/crc32.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/bitops.h> @@ -45,1691 +41,1893 @@ #include <asm/processor.h> #include <asm/io.h> #include <asm/dma.h> -#include <asm/irq.h> #include <asm/uaccess.h> #include <asm/ocp.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/crc32.h> - #include "ibm_emac_core.h" - -//#define MDIO_DEBUG(fmt) printk fmt -#define MDIO_DEBUG(fmt) - -//#define LINK_DEBUG(fmt) printk fmt -#define LINK_DEBUG(fmt) - -//#define PKT_DEBUG(fmt) printk fmt -#define PKT_DEBUG(fmt) - -#define DRV_NAME "emac" -#define DRV_VERSION "2.0" -#define DRV_AUTHOR "Benjamin Herrenschmidt <benh@kernel.crashing.org>" -#define DRV_DESC "IBM EMAC Ethernet driver" +#include "ibm_emac_debug.h" /* - * When mdio_idx >= 0, contains a list of emac ocp_devs - * that have had their initialization deferred until the - * common MDIO controller has been initialized. + * Lack of dma_unmap_???? calls is intentional. + * + * API-correct usage requires additional support state information to be + * maintained for every RX and TX buffer descriptor (BD). Unfortunately, due to + * EMAC design (e.g. TX buffer passed from network stack can be split into + * several BDs, dma_map_single/dma_map_page can be used to map particular BD), + * maintaining such information will add additional overhead. + * Current DMA API implementation for 4xx processors only ensures cache coherency + * and dma_unmap_???? routines are empty and are likely to stay this way. + * I decided to omit dma_unmap_??? calls because I don't want to add additional + * complexity just for the sake of following some abstract API, when it doesn't + * add any real benefit to the driver. I understand that this decision maybe + * controversial, but I really tried to make code API-correct and efficient + * at the same time and didn't come up with code I liked :(. --ebs */ -LIST_HEAD(emac_init_list); -MODULE_AUTHOR(DRV_AUTHOR); +#define DRV_NAME "emac" +#define DRV_VERSION "3.53" +#define DRV_DESC "PPC 4xx OCP EMAC driver" + MODULE_DESCRIPTION(DRV_DESC); +MODULE_AUTHOR + ("Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>"); MODULE_LICENSE("GPL"); -static int skb_res = SKB_RES; -module_param(skb_res, int, 0444); -MODULE_PARM_DESC(skb_res, "Amount of data to reserve on skb buffs\n" - "The 405 handles a misaligned IP header fine but\n" - "this can help if you are routing to a tunnel or a\n" - "device that needs aligned data. 0..2"); - -#define RGMII_PRIV(ocpdev) ((struct ibm_ocp_rgmii*)ocp_get_drvdata(ocpdev)) +/* minimum number of free TX descriptors required to wake up TX process */ +#define EMAC_TX_WAKEUP_THRESH (NUM_TX_BUFF / 4) -static unsigned int rgmii_enable[] = { - RGMII_RTBI, - RGMII_RGMII, - RGMII_TBI, - RGMII_GMII -}; +/* If packet size is less than this number, we allocate small skb and copy packet + * contents into it instead of just sending original big skb up + */ +#define EMAC_RX_COPY_THRESH CONFIG_IBM_EMAC_RX_COPY_THRESHOLD -static unsigned int rgmii_speed_mask[] = { - RGMII_MII2_SPDMASK, - RGMII_MII3_SPDMASK -}; +/* Since multiple EMACs share MDIO lines in various ways, we need + * to avoid re-using the same PHY ID in cases where the arch didn't + * setup precise phy_map entries + */ +static u32 busy_phy_map; -static unsigned int rgmii_speed100[] = { - RGMII_MII2_100MB, - RGMII_MII3_100MB -}; +#if defined(CONFIG_IBM_EMAC_PHY_RX_CLK_FIX) && (defined(CONFIG_405EP) || defined(CONFIG_440EP)) +/* 405EP has "EMAC to PHY Control Register" (CPC0_EPCTL) which can help us + * with PHY RX clock problem. + * 440EP has more sane SDR0_MFR register implementation than 440GX, which + * also allows controlling each EMAC clock + */ +static inline void EMAC_RX_CLK_TX(int idx) +{ + unsigned long flags; + local_irq_save(flags); -static unsigned int rgmii_speed1000[] = { - RGMII_MII2_1000MB, - RGMII_MII3_1000MB -}; +#if defined(CONFIG_405EP) + mtdcr(0xf3, mfdcr(0xf3) | (1 << idx)); +#else /* CONFIG_440EP */ + SDR_WRITE(DCRN_SDR_MFR, SDR_READ(DCRN_SDR_MFR) | (0x08000000 >> idx)); +#endif -#define ZMII_PRIV(ocpdev) ((struct ibm_ocp_zmii*)ocp_get_drvdata(ocpdev)) + local_irq_restore(flags); +} -static unsigned int zmii_enable[][4] = { - {ZMII_SMII0, ZMII_RMII0, ZMII_MII0, - ~(ZMII_MDI1 | ZMII_MDI2 | ZMII_MDI3)}, - {ZMII_SMII1, ZMII_RMII1, ZMII_MII1, - ~(ZMII_MDI0 | ZMII_MDI2 | ZMII_MDI3)}, - {ZMII_SMII2, ZMII_RMII2, ZMII_MII2, - ~(ZMII_MDI0 | ZMII_MDI1 | ZMII_MDI3)}, - {ZMII_SMII3, ZMII_RMII3, ZMII_MII3, ~(ZMII_MDI0 | ZMII_MDI1 | ZMII_MDI2)} -}; +static inline void EMAC_RX_CLK_DEFAULT(int idx) +{ + unsigned long flags; + local_irq_save(flags); -static unsigned int mdi_enable[] = { - ZMII_MDI0, - ZMII_MDI1, - ZMII_MDI2, - ZMII_MDI3 -}; +#if defined(CONFIG_405EP) + mtdcr(0xf3, mfdcr(0xf3) & ~(1 << idx)); +#else /* CONFIG_440EP */ + SDR_WRITE(DCRN_SDR_MFR, SDR_READ(DCRN_SDR_MFR) & ~(0x08000000 >> idx)); +#endif -static unsigned int zmii_speed = 0x0; -static unsigned int zmii_speed100[] = { - ZMII_MII0_100MB, - ZMII_MII1_100MB, - ZMII_MII2_100MB, - ZMII_MII3_100MB -}; + local_irq_restore(flags); +} +#else +#define EMAC_RX_CLK_TX(idx) ((void)0) +#define EMAC_RX_CLK_DEFAULT(idx) ((void)0) +#endif -/* Since multiple EMACs share MDIO lines in various ways, we need - * to avoid re-using the same PHY ID in cases where the arch didn't - * setup precise phy_map entries +#if defined(CONFIG_IBM_EMAC_PHY_RX_CLK_FIX) && defined(CONFIG_440GX) +/* We can switch Ethernet clock to the internal source through SDR0_MFR[ECS], + * unfortunately this is less flexible than 440EP case, because it's a global + * setting for all EMACs, therefore we do this clock trick only during probe. */ -static u32 busy_phy_map = 0; +#define EMAC_CLK_INTERNAL SDR_WRITE(DCRN_SDR_MFR, \ + SDR_READ(DCRN_SDR_MFR) | 0x08000000) +#define EMAC_CLK_EXTERNAL SDR_WRITE(DCRN_SDR_MFR, \ + SDR_READ(DCRN_SDR_MFR) & ~0x08000000) +#else +#define EMAC_CLK_INTERNAL ((void)0) +#define EMAC_CLK_EXTERNAL ((void)0) +#endif -/* If EMACs share a common MDIO device, this points to it */ -static struct net_device *mdio_ndev = NULL; +/* I don't want to litter system log with timeout errors + * when we have brain-damaged PHY. + */ +static inline void emac_report_timeout_error(struct ocp_enet_private *dev, + const char *error) +{ +#if defined(CONFIG_IBM_EMAC_PHY_RX_CLK_FIX) + DBG("%d: %s" NL, dev->def->index, error); +#else + if (net_ratelimit()) + printk(KERN_ERR "emac%d: %s\n", dev->def->index, error); +#endif +} -struct emac_def_dev { - struct list_head link; - struct ocp_device *ocpdev; - struct ibm_ocp_mal *mal; +/* PHY polling intervals */ +#define PHY_POLL_LINK_ON HZ +#define PHY_POLL_LINK_OFF (HZ / 5) + +/* Please, keep in sync with struct ibm_emac_stats/ibm_emac_error_stats */ +static const char emac_stats_keys[EMAC_ETHTOOL_STATS_COUNT][ETH_GSTRING_LEN] = { + "rx_packets", "rx_bytes", "tx_packets", "tx_bytes", "rx_packets_csum", + "tx_packets_csum", "tx_undo", "rx_dropped_stack", "rx_dropped_oom", + "rx_dropped_error", "rx_dropped_resize", "rx_dropped_mtu", + "rx_stopped", "rx_bd_errors", "rx_bd_overrun", "rx_bd_bad_packet", + "rx_bd_runt_packet", "rx_bd_short_event", "rx_bd_alignment_error", + "rx_bd_bad_fcs", "rx_bd_packet_too_long", "rx_bd_out_of_range", + "rx_bd_in_range", "rx_parity", "rx_fifo_overrun", "rx_overrun", + "rx_bad_packet", "rx_runt_packet", "rx_short_event", + "rx_alignment_error", "rx_bad_fcs", "rx_packet_too_long", + "rx_out_of_range", "rx_in_range", "tx_dropped", "tx_bd_errors", + "tx_bd_bad_fcs", "tx_bd_carrier_loss", "tx_bd_excessive_deferral", + "tx_bd_excessive_collisions", "tx_bd_late_collision", + "tx_bd_multple_collisions", "tx_bd_single_collision", + "tx_bd_underrun", "tx_bd_sqe", "tx_parity", "tx_underrun", "tx_sqe", + "tx_errors" }; -static struct net_device_stats *emac_stats(struct net_device *dev) +static irqreturn_t emac_irq(int irq, void *dev_instance, struct pt_regs *regs); +static void emac_clean_tx_ring(struct ocp_enet_private *dev); + +static inline int emac_phy_supports_gige(int phy_mode) { - struct ocp_enet_private *fep = dev->priv; - return &fep->stats; -}; + return phy_mode == PHY_MODE_GMII || + phy_mode == PHY_MODE_RGMII || + phy_mode == PHY_MODE_TBI || + phy_mode == PHY_MODE_RTBI; +} -static int -emac_init_rgmii(struct ocp_device *rgmii_dev, int input, int phy_mode) +static inline int emac_phy_gpcs(int phy_mode) { - struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(rgmii_dev); - const char *mode_name[] = { "RTBI", "RGMII", "TBI", "GMII" }; - int mode = -1; + return phy_mode == PHY_MODE_TBI || + phy_mode == PHY_MODE_RTBI; +} - if (!rgmii) { - rgmii = kmalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL); +static inline void emac_tx_enable(struct ocp_enet_private *dev) +{ + struct emac_regs *p = dev->emacp; + unsigned long flags; + u32 r; - if (rgmii == NULL) { - printk(KERN_ERR - "rgmii%d: Out of memory allocating RGMII structure!\n", - rgmii_dev->def->index); - return -ENOMEM; - } + local_irq_save(flags); - memset(rgmii, 0, sizeof(*rgmii)); + DBG("%d: tx_enable" NL, dev->def->index); - rgmii->base = - (struct rgmii_regs *)ioremap(rgmii_dev->def->paddr, - sizeof(*rgmii->base)); - if (rgmii->base == NULL) { - printk(KERN_ERR - "rgmii%d: Cannot ioremap bridge registers!\n", - rgmii_dev->def->index); + r = in_be32(&p->mr0); + if (!(r & EMAC_MR0_TXE)) + out_be32(&p->mr0, r | EMAC_MR0_TXE); + local_irq_restore(flags); +} - kfree(rgmii); - return -ENOMEM; - } - ocp_set_drvdata(rgmii_dev, rgmii); - } +static void emac_tx_disable(struct ocp_enet_private *dev) +{ + struct emac_regs *p = dev->emacp; + unsigned long flags; + u32 r; - if (phy_mode) { - switch (phy_mode) { - case PHY_MODE_GMII: - mode = GMII; - break; - case PHY_MODE_TBI: - mode = TBI; - break; - case PHY_MODE_RTBI: - mode = RTBI; - break; - case PHY_MODE_RGMII: - default: - mode = RGMII; - } - rgmii->base->fer &= ~RGMII_FER_MASK(input); - rgmii->base->fer |= rgmii_enable[mode] << (4 * input); - } else { - switch ((rgmii->base->fer & RGMII_FER_MASK(input)) >> (4 * - input)) { - case RGMII_RTBI: - mode = RTBI; - break; - case RGMII_RGMII: - mode = RGMII; - break; - case RGMII_TBI: - mode = TBI; - break; - case RGMII_GMII: - mode = GMII; - } - } + local_irq_save(flags); + + DBG("%d: tx_disable" NL, dev->def->index); - /* Set mode to RGMII if nothing valid is detected */ - if (mode < 0) - mode = RGMII; + r = in_be32(&p->mr0); + if (r & EMAC_MR0_TXE) { + int n = 300; + out_be32(&p->mr0, r & ~EMAC_MR0_TXE); + while (!(in_be32(&p->mr0) & EMAC_MR0_TXI) && n) + --n; + if (unlikely(!n)) + emac_report_timeout_error(dev, "TX disable timeout"); + } + local_irq_restore(flags); +} - printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n", - rgmii_dev->def->index, input, mode_name[mode]); +static void emac_rx_enable(struct ocp_enet_private *dev) +{ + struct emac_regs *p = dev->emacp; + unsigned long flags; + u32 r; - rgmii->mode[input] = mode; - rgmii->users++; + local_irq_save(flags); + if (unlikely(dev->commac.rx_stopped)) + goto out; - return 0; + DBG("%d: rx_enable" NL, dev->def->index); + + r = in_be32(&p->mr0); + if (!(r & EMAC_MR0_RXE)) { + if (unlikely(!(r & EMAC_MR0_RXI))) { + /* Wait if previous async disable is still in progress */ + int n = 100; + while (!(r = in_be32(&p->mr0) & EMAC_MR0_RXI) && n) + --n; + if (unlikely(!n)) + emac_report_timeout_error(dev, + "RX disable timeout"); + } + out_be32(&p->mr0, r | EMAC_MR0_RXE); + } + out: + local_irq_restore(flags); } -static void -emac_rgmii_port_speed(struct ocp_device *ocpdev, int input, int speed) +static void emac_rx_disable(struct ocp_enet_private *dev) { - struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(ocpdev); - unsigned int rgmii_speed; - - rgmii_speed = in_be32(&rgmii->base->ssr); + struct emac_regs *p = dev->emacp; + unsigned long flags; + u32 r; - rgmii_speed &= ~rgmii_speed_mask[input]; + local_irq_save(flags); - if (speed == 1000) - rgmii_speed |= rgmii_speed1000[input]; - else if (speed == 100) - rgmii_speed |= rgmii_speed100[input]; + DBG("%d: rx_disable" NL, dev->def->index); - out_be32(&rgmii->base->ssr, rgmii_speed); + r = in_be32(&p->mr0); + if (r & EMAC_MR0_RXE) { + int n = 300; + out_be32(&p->mr0, r & ~EMAC_MR0_RXE); + while (!(in_be32(&p->mr0) & EMAC_MR0_RXI) && n) + --n; + if (unlikely(!n)) + emac_report_timeout_error(dev, "RX disable timeout"); + } + local_irq_restore(flags); } -static void emac_close_rgmii(struct ocp_device *ocpdev) +static inline void emac_rx_disable_async(struct ocp_enet_private *dev) { - struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(ocpdev); - BUG_ON(!rgmii || rgmii->users == 0); + struct emac_regs *p = dev->emacp; + unsigned long flags; + u32 r; - if (!--rgmii->users) { - ocp_set_drvdata(ocpdev, NULL); - iounmap((void *)rgmii->base); - kfree(rgmii); - } + local_irq_save(flags); + + DBG("%d: rx_disable_async" NL, dev->def->index); + + r = in_be32(&p->mr0); + if (r & EMAC_MR0_RXE) + out_be32(&p->mr0, r & ~EMAC_MR0_RXE); + local_irq_restore(flags); } -static int emac_init_zmii(struct ocp_device *zmii_dev, int input, int phy_mode) +static int emac_reset(struct ocp_enet_private *dev) { - struct ibm_ocp_zmii *zmii = ZMII_PRIV(zmii_dev); - const char *mode_name[] = { "SMII", "RMII", "MII" }; - int mode = -1; + struct emac_regs *p = dev->emacp; + unsigned long flags; + int n = 20; - if (!zmii) { - zmii = kmalloc(sizeof(struct ibm_ocp_zmii), GFP_KERNEL); - if (zmii == NULL) { - printk(KERN_ERR - "zmii%d: Out of memory allocating ZMII structure!\n", - zmii_dev->def->index); - return -ENOMEM; - } - memset(zmii, 0, sizeof(*zmii)); + DBG("%d: reset" NL, dev->def->index); - zmii->base = - (struct zmii_regs *)ioremap(zmii_dev->def->paddr, - sizeof(*zmii->base)); - if (zmii->base == NULL) { - printk(KERN_ERR - "zmii%d: Cannot ioremap bridge registers!\n", - zmii_dev->def->index); + local_irq_save(flags); - kfree(zmii); - return -ENOMEM; - } - ocp_set_drvdata(zmii_dev, zmii); + if (!dev->reset_failed) { + /* 40x erratum suggests stopping RX channel before reset, + * we stop TX as well + */ + emac_rx_disable(dev); + emac_tx_disable(dev); } - if (phy_mode) { - switch (phy_mode) { - case PHY_MODE_MII: - mode = MII; - break; - case PHY_MODE_RMII: - mode = RMII; - break; - case PHY_MODE_SMII: - default: - mode = SMII; - } - zmii->base->fer &= ~ZMII_FER_MASK(input); - zmii->base->fer |= zmii_enable[input][mode]; + out_be32(&p->mr0, EMAC_MR0_SRST); + while ((in_be32(&p->mr0) & EMAC_MR0_SRST) && n) + --n; + local_irq_restore(flags); + + if (n) { + dev->reset_failed = 0; + return 0; } else { - switch ((zmii->base->fer & ZMII_FER_MASK(input)) << (4 * input)) { - case ZMII_MII0: - mode = MII; - break; - case ZMII_RMII0: - mode = RMII; - break; - case ZMII_SMII0: - mode = SMII; - } + emac_report_timeout_error(dev, "reset timeout"); + dev->reset_failed = 1; + return -ETIMEDOUT; } +} - /* Set mode to SMII if nothing valid is detected */ - if (mode < 0) - mode = SMII; +static void emac_hash_mc(struct ocp_enet_private *dev) +{ + struct emac_regs *p = dev->emacp; + u16 gaht[4] = { 0 }; + struct dev_mc_list *dmi; - printk(KERN_NOTICE "zmii%d: input %d in %s mode\n", - zmii_dev->def->index, input, mode_name[mode]); + DBG("%d: hash_mc %d" NL, dev->def->index, dev->ndev->mc_count); - zmii->mode[input] = mode; - zmii->users++; + for (dmi = dev->ndev->mc_list; dmi; dmi = dmi->next) { + int bit; + DBG2("%d: mc %02x:%02x:%02x:%02x:%02x:%02x" NL, + dev->def->index, + dmi->dmi_addr[0], dmi->dmi_addr[1], dmi->dmi_addr[2], + dmi->dmi_addr[3], dmi->dmi_addr[4], dmi->dmi_addr[5]); - return 0; + bit = 63 - (ether_crc(ETH_ALEN, dmi->dmi_addr) >> 26); + gaht[bit >> 4] |= 0x8000 >> (bit & 0x0f); + } + out_be32(&p->gaht1, gaht[0]); + out_be32(&p->gaht2, gaht[1]); + out_be32(&p->gaht3, gaht[2]); + out_be32(&p->gaht4, gaht[3]); } -static void emac_enable_zmii_port(struct ocp_device *ocpdev, int input) +static inline u32 emac_iff2rmr(struct net_device *ndev) { - u32 mask; - struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev); + u32 r = EMAC_RMR_SP | EMAC_RMR_SFCS | EMAC_RMR_IAE | EMAC_RMR_BAE | + EMAC_RMR_BASE; - mask = in_be32(&zmii->base->fer); - mask &= zmii_enable[input][MDI]; /* turn all non enabled MDI's off */ - mask |= zmii_enable[input][zmii->mode[input]] | mdi_enable[input]; - out_be32(&zmii->base->fer, mask); + if (ndev->flags & IFF_PROMISC) + r |= EMAC_RMR_PME; + else if (ndev->flags & IFF_ALLMULTI || ndev->mc_count > 32) + r |= EMAC_RMR_PMME; + else if (ndev->mc_count > 0) + r |= EMAC_RMR_MAE; + + return r; } -static void -emac_zmii_port_speed(struct ocp_device *ocpdev, int input, int speed) +static inline int emac_opb_mhz(void) { - struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev); - - if (speed == 100) - zmii_speed |= zmii_speed100[input]; - else - zmii_speed &= ~zmii_speed100[input]; - - out_be32(&zmii->base->ssr, zmii_speed); + return (ocp_sys_info.opb_bus_freq + 500000) / 1000000; } -static void emac_close_zmii(struct ocp_device *ocpdev) +/* BHs disabled */ +static int emac_configure(struct ocp_enet_private *dev) { - struct ibm_ocp_zmii *zmii = ZMII_PRIV(ocpdev); - BUG_ON(!zmii || zmii->users == 0); + struct emac_regs *p = dev->emacp; + struct net_device *ndev = dev->ndev; + int gige; + u32 r; - if (!--zmii->users) { - ocp_set_drvdata(ocpdev, NULL); - iounmap((void *)zmii->base); - kfree(zmii); - } -} + DBG("%d: configure" NL, dev->def->index); -int emac_phy_read(struct net_device *dev, int mii_id, int reg) -{ - int count; - uint32_t stacr; - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; + if (emac_reset(dev) < 0) + return -ETIMEDOUT; - MDIO_DEBUG(("%s: phy_read, id: 0x%x, reg: 0x%x\n", dev->name, mii_id, - reg)); + tah_reset(dev->tah_dev); - /* Enable proper ZMII port */ - if (fep->zmii_dev) - emac_enable_zmii_port(fep->zmii_dev, fep->zmii_input); + /* Mode register */ + r = EMAC_MR1_BASE(emac_opb_mhz()) | EMAC_MR1_VLE | EMAC_MR1_IST; + if (dev->phy.duplex == DUPLEX_FULL) + r |= EMAC_MR1_FDE; + switch (dev->phy.speed) { + case SPEED_1000: + if (emac_phy_gpcs(dev->phy.mode)) { + r |= EMAC_MR1_MF_1000GPCS | + EMAC_MR1_MF_IPPA(dev->phy.address); - /* Use the EMAC that has the MDIO port */ - if (fep->mdio_dev) { - dev = fep->mdio_dev; - fep = dev->priv; - emacp = fep->emacp; + /* Put some arbitrary OUI, Manuf & Rev IDs so we can + * identify this GPCS PHY later. + */ + out_be32(&p->ipcr, 0xdeadbeef); + } else + r |= EMAC_MR1_MF_1000; + r |= EMAC_MR1_RFS_16K; + gige = 1; + + if (dev->ndev->mtu > ETH_DATA_LEN) + r |= EMAC_MR1_JPSM; + break; + case SPEED_100: + r |= EMAC_MR1_MF_100; + /* Fall through */ + default: + r |= EMAC_MR1_RFS_4K; + gige = 0; + break; } - count = 0; - while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0) - && (count++ < MDIO_DELAY)) - udelay(1); - MDIO_DEBUG((" (count was %d)\n", count)); + if (dev->rgmii_dev) + rgmii_set_speed(dev->rgmii_dev, dev->rgmii_input, + dev->phy.speed); + else + zmii_set_speed(dev->zmii_dev, dev->zmii_input, dev->phy.speed); - if ((stacr & EMAC_STACR_OC) == 0) { - printk(KERN_WARNING "%s: PHY read timeout #1!\n", dev->name); - return -1; +#if !defined(CONFIG_40x) + /* on 40x erratum forces us to NOT use integrated flow control, + * let's hope it works on 44x ;) + */ + if (dev->phy.duplex == DUPLEX_FULL) { + if (dev->phy.pause) + r |= EMAC_MR1_EIFC | EMAC_MR1_APP; + else if (dev->phy.asym_pause) + r |= EMAC_MR1_APP; } +#endif + out_be32(&p->mr1, r); + + /* Set individual MAC address */ + out_be32(&p->iahr, (ndev->dev_addr[0] << 8) | ndev->dev_addr[1]); + out_be32(&p->ialr, (ndev->dev_addr[2] << 24) | + (ndev->dev_addr[3] << 16) | (ndev->dev_addr[4] << 8) | + ndev->dev_addr[5]); + + /* VLAN Tag Protocol ID */ + out_be32(&p->vtpid, 0x8100); + + /* Receive mode register */ + r = emac_iff2rmr(ndev); + if (r & EMAC_RMR_MAE) + emac_hash_mc(dev); + out_be32(&p->rmr, r); + + /* FIFOs thresholds */ + r = EMAC_TMR1((EMAC_MAL_BURST_SIZE / EMAC_FIFO_ENTRY_SIZE) + 1, + EMAC_TX_FIFO_SIZE / 2 / EMAC_FIFO_ENTRY_SIZE); + out_be32(&p->tmr1, r); + out_be32(&p->trtr, EMAC_TRTR(EMAC_TX_FIFO_SIZE / 2)); + + /* PAUSE frame is sent when RX FIFO reaches its high-water mark, + there should be still enough space in FIFO to allow the our link + partner time to process this frame and also time to send PAUSE + frame itself. + + Here is the worst case scenario for the RX FIFO "headroom" + (from "The Switch Book") (100Mbps, without preamble, inter-frame gap): + + 1) One maximum-length frame on TX 1522 bytes + 2) One PAUSE frame time 64 bytes + 3) PAUSE frame decode time allowance 64 bytes + 4) One maximum-length frame on RX 1522 bytes + 5) Round-trip propagation delay of the link (100Mb) 15 bytes + ---------- + 3187 bytes + + I chose to set high-water mark to RX_FIFO_SIZE / 4 (1024 bytes) + low-water mark to RX_FIFO_SIZE / 8 (512 bytes) + */ + r = EMAC_RWMR(EMAC_RX_FIFO_SIZE(gige) / 8 / EMAC_FIFO_ENTRY_SIZE, + EMAC_RX_FIFO_SIZE(gige) / 4 / EMAC_FIFO_ENTRY_SIZE); + out_be32(&p->rwmr, r); + + /* Set PAUSE timer to the maximum */ + out_be32(&p->ptr, 0xffff); + + /* IRQ sources */ + out_be32(&p->iser, EMAC_ISR_TXPE | EMAC_ISR_RXPE | /* EMAC_ISR_TXUE | + EMAC_ISR_RXOE | */ EMAC_ISR_OVR | EMAC_ISR_BP | EMAC_ISR_SE | + EMAC_ISR_ALE | EMAC_ISR_BFCS | EMAC_ISR_PTLE | EMAC_ISR_ORE | + EMAC_ISR_IRE | EMAC_ISR_TE); + + /* We need to take GPCS PHY out of isolate mode after EMAC reset */ + if (emac_phy_gpcs(dev->phy.mode)) + mii_reset_phy(&dev->phy); + + return 0; +} - /* Clear the speed bits and make a read request to the PHY */ - stacr = ((EMAC_STACR_READ | (reg & 0x1f)) & ~EMAC_STACR_CLK_100MHZ); - stacr |= ((mii_id & 0x1F) << 5); +/* BHs disabled */ +static void emac_reinitialize(struct ocp_enet_private *dev) +{ + DBG("%d: reinitialize" NL, dev->def->index); - out_be32(&emacp->em0stacr, stacr); + if (!emac_configure(dev)) { + emac_tx_enable(dev); + emac_rx_enable(dev); + } +} - count = 0; - while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0) - && (count++ < MDIO_DELAY)) - udelay(1); - MDIO_DEBUG((" (count was %d)\n", count)); +/* BHs disabled */ +static void emac_full_tx_reset(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + struct ocp_func_emac_data *emacdata = dev->def->additions; - if ((stacr & EMAC_STACR_OC) == 0) { - printk(KERN_WARNING "%s: PHY read timeout #2!\n", dev->name); - return -1; - } + DBG("%d: full_tx_reset" NL, dev->def->index); - /* Check for a read error */ - if (stacr & EMAC_STACR_PHYE) { - MDIO_DEBUG(("EMAC MDIO PHY error !\n")); - return -1; - } + emac_tx_disable(dev); + mal_disable_tx_channel(dev->mal, emacdata->mal_tx_chan); + emac_clean_tx_ring(dev); + dev->tx_cnt = dev->tx_slot = dev->ack_slot = 0; - MDIO_DEBUG((" -> 0x%x\n", stacr >> 16)); + emac_configure(dev); - return (stacr >> 16); + mal_enable_tx_channel(dev->mal, emacdata->mal_tx_chan); + emac_tx_enable(dev); + emac_rx_enable(dev); + + netif_wake_queue(ndev); } -void emac_phy_write(struct net_device *dev, int mii_id, int reg, int data) +static int __emac_mdio_read(struct ocp_enet_private *dev, u8 id, u8 reg) { - int count; - uint32_t stacr; - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; + struct emac_regs *p = dev->emacp; + u32 r; + int n; - MDIO_DEBUG(("%s phy_write, id: 0x%x, reg: 0x%x, data: 0x%x\n", - dev->name, mii_id, reg, data)); + DBG2("%d: mdio_read(%02x,%02x)" NL, dev->def->index, id, reg); - /* Enable proper ZMII port */ - if (fep->zmii_dev) - emac_enable_zmii_port(fep->zmii_dev, fep->zmii_input); + /* Enable proper MDIO port */ + zmii_enable_mdio(dev->zmii_dev, dev->zmii_input); - /* Use the EMAC that has the MDIO port */ - if (fep->mdio_dev) { - dev = fep->mdio_dev; - fep = dev->priv; - emacp = fep->emacp; + /* Wait for management interface to become idle */ + n = 10; + while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) { + udelay(1); + if (!--n) + goto to; } - count = 0; - while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0) - && (count++ < MDIO_DELAY)) + /* Issue read command */ + out_be32(&p->stacr, + EMAC_STACR_BASE(emac_opb_mhz()) | EMAC_STACR_STAC_READ | + (reg & EMAC_STACR_PRA_MASK) + | ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT)); + + /* Wait for read to complete */ + n = 100; + while (!((r = in_be32(&p->stacr)) & EMAC_STACR_OC)) { udelay(1); - MDIO_DEBUG((" (count was %d)\n", count)); + if (!--n) + goto to; + } - if ((stacr & EMAC_STACR_OC) == 0) { - printk(KERN_WARNING "%s: PHY write timeout #2!\n", dev->name); - return; + if (unlikely(r & EMAC_STACR_PHYE)) { + DBG("%d: mdio_read(%02x, %02x) failed" NL, dev->def->index, + id, reg); + return -EREMOTEIO; } - /* Clear the speed bits and make a read request to the PHY */ + r = ((r >> EMAC_STACR_PHYD_SHIFT) & EMAC_STACR_PHYD_MASK); + DBG2("%d: mdio_read -> %04x" NL, dev->def->index, r); + return r; + to: + DBG("%d: MII management interface timeout (read)" NL, dev->def->index); + return -ETIMEDOUT; +} - stacr = ((EMAC_STACR_WRITE | (reg & 0x1f)) & ~EMAC_STACR_CLK_100MHZ); - stacr |= ((mii_id & 0x1f) << 5) | ((data & 0xffff) << 16); +static void __emac_mdio_write(struct ocp_enet_private *dev, u8 id, u8 reg, + u16 val) +{ + struct emac_regs *p = dev->emacp; + int n; - out_be32(&emacp->em0stacr, stacr); + DBG2("%d: mdio_write(%02x,%02x,%04x)" NL, dev->def->index, id, reg, + val); - count = 0; - while ((((stacr = in_be32(&emacp->em0stacr)) & EMAC_STACR_OC) == 0) - && (count++ < MDIO_DELAY)) + /* Enable proper MDIO port */ + zmii_enable_mdio(dev->zmii_dev, dev->zmii_input); + + /* Wait for management interface to be idle */ + n = 10; + while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) { udelay(1); - MDIO_DEBUG((" (count was %d)\n", count)); + if (!--n) + goto to; + } - if ((stacr & EMAC_STACR_OC) == 0) - printk(KERN_WARNING "%s: PHY write timeout #2!\n", dev->name); + /* Issue write command */ + out_be32(&p->stacr, + EMAC_STACR_BASE(emac_opb_mhz()) | EMAC_STACR_STAC_WRITE | + (reg & EMAC_STACR_PRA_MASK) | + ((id & EMAC_STACR_PCDA_MASK) << EMAC_STACR_PCDA_SHIFT) | + (val << EMAC_STACR_PHYD_SHIFT)); - /* Check for a write error */ - if ((stacr & EMAC_STACR_PHYE) != 0) { - MDIO_DEBUG(("EMAC MDIO PHY error !\n")); + /* Wait for write to complete */ + n = 100; + while (!(in_be32(&p->stacr) & EMAC_STACR_OC)) { + udelay(1); + if (!--n) + goto to; } + return; + to: + DBG("%d: MII management interface timeout (write)" NL, dev->def->index); } -static void emac_txeob_dev(void *param, u32 chanmask) +static int emac_mdio_read(struct net_device *ndev, int id, int reg) { - struct net_device *dev = param; - struct ocp_enet_private *fep = dev->priv; - unsigned long flags; - - spin_lock_irqsave(&fep->lock, flags); - - PKT_DEBUG(("emac_txeob_dev() entry, tx_cnt: %d\n", fep->tx_cnt)); - - while (fep->tx_cnt && - !(fep->tx_desc[fep->ack_slot].ctrl & MAL_TX_CTRL_READY)) { + struct ocp_enet_private *dev = ndev->priv; + int res; + + local_bh_disable(); + res = __emac_mdio_read(dev->mdio_dev ? dev->mdio_dev : dev, (u8) id, + (u8) reg); + local_bh_enable(); + return res; +} - if (fep->tx_desc[fep->ack_slot].ctrl & MAL_TX_CTRL_LAST) { - /* Tell the system the transmit completed. */ - dma_unmap_single(&fep->ocpdev->dev, - fep->tx_desc[fep->ack_slot].data_ptr, - fep->tx_desc[fep->ack_slot].data_len, - DMA_TO_DEVICE); - dev_kfree_skb_irq(fep->tx_skb[fep->ack_slot]); +static void emac_mdio_write(struct net_device *ndev, int id, int reg, int val) +{ + struct ocp_enet_private *dev = ndev->priv; - if (fep->tx_desc[fep->ack_slot].ctrl & - (EMAC_TX_ST_EC | EMAC_TX_ST_MC | EMAC_TX_ST_SC)) - fep->stats.collisions++; - } + local_bh_disable(); + __emac_mdio_write(dev->mdio_dev ? dev->mdio_dev : dev, (u8) id, + (u8) reg, (u16) val); + local_bh_enable(); +} - fep->tx_skb[fep->ack_slot] = (struct sk_buff *)NULL; - if (++fep->ack_slot == NUM_TX_BUFF) - fep->ack_slot = 0; +/* BHs disabled */ +static void emac_set_multicast_list(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + struct emac_regs *p = dev->emacp; + u32 rmr = emac_iff2rmr(ndev); + + DBG("%d: multicast %08x" NL, dev->def->index, rmr); + BUG_ON(!netif_running(dev->ndev)); + + /* I decided to relax register access rules here to avoid + * full EMAC reset. + * + * There is a real problem with EMAC4 core if we use MWSW_001 bit + * in MR1 register and do a full EMAC reset. + * One TX BD status update is delayed and, after EMAC reset, it + * never happens, resulting in TX hung (it'll be recovered by TX + * timeout handler eventually, but this is just gross). + * So we either have to do full TX reset or try to cheat here :) + * + * The only required change is to RX mode register, so I *think* all + * we need is just to stop RX channel. This seems to work on all + * tested SoCs. --ebs + */ + emac_rx_disable(dev); + if (rmr & EMAC_RMR_MAE) + emac_hash_mc(dev); + out_be32(&p->rmr, rmr); + emac_rx_enable(dev); +} - fep->tx_cnt--; +/* BHs disabled */ +static int emac_resize_rx_ring(struct ocp_enet_private *dev, int new_mtu) +{ + struct ocp_func_emac_data *emacdata = dev->def->additions; + int rx_sync_size = emac_rx_sync_size(new_mtu); + int rx_skb_size = emac_rx_skb_size(new_mtu); + int i, ret = 0; + + emac_rx_disable(dev); + mal_disable_rx_channel(dev->mal, emacdata->mal_rx_chan); + + if (dev->rx_sg_skb) { + ++dev->estats.rx_dropped_resize; + dev_kfree_skb(dev->rx_sg_skb); + dev->rx_sg_skb = NULL; } - if (fep->tx_cnt < NUM_TX_BUFF) - netif_wake_queue(dev); - PKT_DEBUG(("emac_txeob_dev() exit, tx_cnt: %d\n", fep->tx_cnt)); + /* Make a first pass over RX ring and mark BDs ready, dropping + * non-processed packets on the way. We need this as a separate pass + * to simplify error recovery in the case of allocation failure later. + */ + for (i = 0; i < NUM_RX_BUFF; ++i) { + if (dev->rx_desc[i].ctrl & MAL_RX_CTRL_FIRST) + ++dev->estats.rx_dropped_resize; - spin_unlock_irqrestore(&fep->lock, flags); -} + dev->rx_desc[i].data_len = 0; + dev->rx_desc[i].ctrl = MAL_RX_CTRL_EMPTY | + (i == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); + } -/* - Fill/Re-fill the rx chain with valid ctrl/ptrs. - This function will fill from rx_slot up to the parm end. - So to completely fill the chain pre-set rx_slot to 0 and - pass in an end of 0. - */ -static void emac_rx_fill(struct net_device *dev, int end) -{ - int i; - struct ocp_enet_private *fep = dev->priv; - - i = fep->rx_slot; - do { - /* We don't want the 16 bytes skb_reserve done by dev_alloc_skb, - * it breaks our cache line alignement. However, we still allocate - * +16 so that we end up allocating the exact same size as - * dev_alloc_skb() would do. - * Also, because of the skb_res, the max DMA size we give to EMAC - * is slighly wrong, causing it to potentially DMA 2 more bytes - * from a broken/oversized packet. These 16 bytes will take care - * that we don't walk on somebody else toes with that. - */ - fep->rx_skb[i] = - alloc_skb(fep->rx_buffer_size + 16, GFP_ATOMIC); - - if (fep->rx_skb[i] == NULL) { - /* Keep rx_slot here, the next time clean/fill is called - * we will try again before the MAL wraps back here - * If the MAL tries to use this descriptor with - * the EMPTY bit off it will cause the - * rxde interrupt. That is where we will - * try again to allocate an sk_buff. - */ - break; + /* Reallocate RX ring only if bigger skb buffers are required */ + if (rx_skb_size <= dev->rx_skb_size) + goto skip; + /* Second pass, allocate new skbs */ + for (i = 0; i < NUM_RX_BUFF; ++i) { + struct sk_buff *skb = alloc_skb(rx_skb_size, GFP_ATOMIC); + if (!skb) { + ret = -ENOMEM; + goto oom; } - if (skb_res) - skb_reserve(fep->rx_skb[i], skb_res); + BUG_ON(!dev->rx_skb[i]); + dev_kfree_skb(dev->rx_skb[i]); - /* We must NOT dma_map_single the cache line right after the - * buffer, so we must crop our sync size to account for the - * reserved space - */ - fep->rx_desc[i].data_ptr = - (unsigned char *)dma_map_single(&fep->ocpdev->dev, - (void *)fep->rx_skb[i]-> - data, - fep->rx_buffer_size - - skb_res, DMA_FROM_DEVICE); - - /* - * Some 4xx implementations use the previously - * reserved bits in data_len to encode the MS - * 4-bits of a 36-bit physical address (ERPN) - * This must be initialized. - */ - fep->rx_desc[i].data_len = 0; - fep->rx_desc[i].ctrl = MAL_RX_CTRL_EMPTY | MAL_RX_CTRL_INTR | - (i == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); + skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2); + dev->rx_desc[i].data_ptr = + dma_map_single(dev->ldev, skb->data - 2, rx_sync_size, + DMA_FROM_DEVICE) + 2; + dev->rx_skb[i] = skb; + } + skip: + /* Check if we need to change "Jumbo" bit in MR1 */ + if ((new_mtu > ETH_DATA_LEN) ^ (dev->ndev->mtu > ETH_DATA_LEN)) { + /* This is to prevent starting RX channel in emac_rx_enable() */ + dev->commac.rx_stopped = 1; + + dev->ndev->mtu = new_mtu; + emac_full_tx_reset(dev->ndev); + } - } while ((i = (i + 1) % NUM_RX_BUFF) != end); + mal_set_rcbs(dev->mal, emacdata->mal_rx_chan, emac_rx_size(new_mtu)); + oom: + /* Restart RX */ + dev->commac.rx_stopped = dev->rx_slot = 0; + mal_enable_rx_channel(dev->mal, emacdata->mal_rx_chan); + emac_rx_enable(dev); - fep->rx_slot = i; + return ret; } -static void -emac_rx_csum(struct net_device *dev, unsigned short ctrl, struct sk_buff *skb) +/* Process ctx, rtnl_lock semaphore */ +static int emac_change_mtu(struct net_device *ndev, int new_mtu) { - struct ocp_enet_private *fep = dev->priv; + struct ocp_enet_private *dev = ndev->priv; + int ret = 0; - /* Exit if interface has no TAH engine */ - if (!fep->tah_dev) { - skb->ip_summed = CHECKSUM_NONE; - return; - } + if (new_mtu < EMAC_MIN_MTU || new_mtu > EMAC_MAX_MTU) + return -EINVAL; - /* Check for TCP/UDP/IP csum error */ - if (ctrl & EMAC_CSUM_VER_ERROR) { - /* Let the stack verify checksum errors */ - skb->ip_summed = CHECKSUM_NONE; -/* adapter->hw_csum_err++; */ - } else { - /* Csum is good */ - skb->ip_summed = CHECKSUM_UNNECESSARY; -/* adapter->hw_csum_good++; */ - } -} + DBG("%d: change_mtu(%d)" NL, dev->def->index, new_mtu); -static int emac_rx_clean(struct net_device *dev) -{ - int i, b, bnum = 0, buf[6]; - int error, frame_length; - struct ocp_enet_private *fep = dev->priv; - unsigned short ctrl; + local_bh_disable(); + if (netif_running(ndev)) { + /* Check if we really need to reinitalize RX ring */ + if (emac_rx_skb_size(ndev->mtu) != emac_rx_skb_size(new_mtu)) + ret = emac_resize_rx_ring(dev, new_mtu); + } - i = fep->rx_slot; + if (!ret) { + ndev->mtu = new_mtu; + dev->rx_skb_size = emac_rx_skb_size(new_mtu); + dev->rx_sync_size = emac_rx_sync_size(new_mtu); + } + local_bh_enable(); - PKT_DEBUG(("emac_rx_clean() entry, rx_slot: %d\n", fep->rx_slot)); + return ret; +} - do { - if (fep->rx_skb[i] == NULL) - continue; /*we have already handled the packet but haved failed to alloc */ - /* - since rx_desc is in uncached mem we don't keep reading it directly - we pull out a local copy of ctrl and do the checks on the copy. - */ - ctrl = fep->rx_desc[i].ctrl; - if (ctrl & MAL_RX_CTRL_EMPTY) - break; /*we don't have any more ready packets */ - - if (EMAC_IS_BAD_RX_PACKET(ctrl)) { - fep->stats.rx_errors++; - fep->stats.rx_dropped++; - - if (ctrl & EMAC_RX_ST_OE) - fep->stats.rx_fifo_errors++; - if (ctrl & EMAC_RX_ST_AE) - fep->stats.rx_frame_errors++; - if (ctrl & EMAC_RX_ST_BFCS) - fep->stats.rx_crc_errors++; - if (ctrl & (EMAC_RX_ST_RP | EMAC_RX_ST_PTL | - EMAC_RX_ST_ORE | EMAC_RX_ST_IRE)) - fep->stats.rx_length_errors++; - } else { - if ((ctrl & (MAL_RX_CTRL_FIRST | MAL_RX_CTRL_LAST)) == - (MAL_RX_CTRL_FIRST | MAL_RX_CTRL_LAST)) { - /* Single descriptor packet */ - emac_rx_csum(dev, ctrl, fep->rx_skb[i]); - /* Send the skb up the chain. */ - frame_length = fep->rx_desc[i].data_len - 4; - skb_put(fep->rx_skb[i], frame_length); - fep->rx_skb[i]->dev = dev; - fep->rx_skb[i]->protocol = - eth_type_trans(fep->rx_skb[i], dev); - error = netif_rx(fep->rx_skb[i]); - - if ((error == NET_RX_DROP) || - (error == NET_RX_BAD)) { - fep->stats.rx_dropped++; - } else { - fep->stats.rx_packets++; - fep->stats.rx_bytes += frame_length; - } - fep->rx_skb[i] = NULL; - } else { - /* Multiple descriptor packet */ - if (ctrl & MAL_RX_CTRL_FIRST) { - if (fep->rx_desc[(i + 1) % NUM_RX_BUFF]. - ctrl & MAL_RX_CTRL_EMPTY) - break; - bnum = 0; - buf[bnum] = i; - ++bnum; - continue; - } - if (((ctrl & MAL_RX_CTRL_FIRST) != - MAL_RX_CTRL_FIRST) && - ((ctrl & MAL_RX_CTRL_LAST) != - MAL_RX_CTRL_LAST)) { - if (fep->rx_desc[(i + 1) % - NUM_RX_BUFF].ctrl & - MAL_RX_CTRL_EMPTY) { - i = buf[0]; - break; - } - buf[bnum] = i; - ++bnum; - continue; - } - if (ctrl & MAL_RX_CTRL_LAST) { - buf[bnum] = i; - ++bnum; - skb_put(fep->rx_skb[buf[0]], - fep->rx_desc[buf[0]].data_len); - for (b = 1; b < bnum; b++) { - /* - * MAL is braindead, we need - * to copy the remainder - * of the packet from the - * latter descriptor buffers - * to the first skb. Then - * dispose of the source - * skbs. - * - * Once the stack is fixed - * to handle frags on most - * protocols we can generate - * a fragmented skb with - * no copies. - */ - memcpy(fep->rx_skb[buf[0]]-> - data + - fep->rx_skb[buf[0]]->len, - fep->rx_skb[buf[b]]-> - data, - fep->rx_desc[buf[b]]. - data_len); - skb_put(fep->rx_skb[buf[0]], - fep->rx_desc[buf[b]]. - data_len); - dma_unmap_single(&fep->ocpdev-> - dev, - fep-> - rx_desc[buf - [b]]. - data_ptr, - fep-> - rx_desc[buf - [b]]. - data_len, - DMA_FROM_DEVICE); - dev_kfree_skb(fep-> - rx_skb[buf[b]]); - } - emac_rx_csum(dev, ctrl, - fep->rx_skb[buf[0]]); - - fep->rx_skb[buf[0]]->dev = dev; - fep->rx_skb[buf[0]]->protocol = - eth_type_trans(fep->rx_skb[buf[0]], - dev); - error = netif_rx(fep->rx_skb[buf[0]]); - - if ((error == NET_RX_DROP) - || (error == NET_RX_BAD)) { - fep->stats.rx_dropped++; - } else { - fep->stats.rx_packets++; - fep->stats.rx_bytes += - fep->rx_skb[buf[0]]->len; - } - for (b = 0; b < bnum; b++) - fep->rx_skb[buf[b]] = NULL; - } - } +static void emac_clean_tx_ring(struct ocp_enet_private *dev) +{ + int i; + for (i = 0; i < NUM_TX_BUFF; ++i) { + if (dev->tx_skb[i]) { + dev_kfree_skb(dev->tx_skb[i]); + dev->tx_skb[i] = NULL; + if (dev->tx_desc[i].ctrl & MAL_TX_CTRL_READY) + ++dev->estats.tx_dropped; } - } while ((i = (i + 1) % NUM_RX_BUFF) != fep->rx_slot); - - PKT_DEBUG(("emac_rx_clean() exit, rx_slot: %d\n", fep->rx_slot)); - - return i; + dev->tx_desc[i].ctrl = 0; + dev->tx_desc[i].data_ptr = 0; + } } -static void emac_rxeob_dev(void *param, u32 chanmask) +static void emac_clean_rx_ring(struct ocp_enet_private *dev) { - struct net_device *dev = param; - struct ocp_enet_private *fep = dev->priv; - unsigned long flags; - int n; + int i; + for (i = 0; i < NUM_RX_BUFF; ++i) + if (dev->rx_skb[i]) { + dev->rx_desc[i].ctrl = 0; + dev_kfree_skb(dev->rx_skb[i]); + dev->rx_skb[i] = NULL; + dev->rx_desc[i].data_ptr = 0; + } - spin_lock_irqsave(&fep->lock, flags); - if ((n = emac_rx_clean(dev)) != fep->rx_slot) - emac_rx_fill(dev, n); - spin_unlock_irqrestore(&fep->lock, flags); + if (dev->rx_sg_skb) { + dev_kfree_skb(dev->rx_sg_skb); + dev->rx_sg_skb = NULL; + } } -/* - * This interrupt should never occurr, we don't program - * the MAL for contiunous mode. - */ -static void emac_txde_dev(void *param, u32 chanmask) +static inline int emac_alloc_rx_skb(struct ocp_enet_private *dev, int slot, + int flags) { - struct net_device *dev = param; - struct ocp_enet_private *fep = dev->priv; + struct sk_buff *skb = alloc_skb(dev->rx_skb_size, flags); + if (unlikely(!skb)) + return -ENOMEM; - printk(KERN_WARNING "%s: transmit descriptor error\n", dev->name); + dev->rx_skb[slot] = skb; + dev->rx_desc[slot].data_len = 0; - emac_mac_dump(dev); - emac_mal_dump(dev); + skb_reserve(skb, EMAC_RX_SKB_HEADROOM + 2); + dev->rx_desc[slot].data_ptr = + dma_map_single(dev->ldev, skb->data - 2, dev->rx_sync_size, + DMA_FROM_DEVICE) + 2; + barrier(); + dev->rx_desc[slot].ctrl = MAL_RX_CTRL_EMPTY | + (slot == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); - /* Reenable the transmit channel */ - mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask); + return 0; } -/* - * This interrupt should be very rare at best. This occurs when - * the hardware has a problem with the receive descriptors. The manual - * states that it occurs when the hardware cannot the receive descriptor - * empty bit is not set. The recovery mechanism will be to - * traverse through the descriptors, handle any that are marked to be - * handled and reinitialize each along the way. At that point the driver - * will be restarted. - */ -static void emac_rxde_dev(void *param, u32 chanmask) +static void emac_print_link_status(struct ocp_enet_private *dev) { - struct net_device *dev = param; - struct ocp_enet_private *fep = dev->priv; - unsigned long flags; - - if (net_ratelimit()) { - printk(KERN_WARNING "%s: receive descriptor error\n", - fep->ndev->name); + if (netif_carrier_ok(dev->ndev)) + printk(KERN_INFO "%s: link is up, %d %s%s\n", + dev->ndev->name, dev->phy.speed, + dev->phy.duplex == DUPLEX_FULL ? "FDX" : "HDX", + dev->phy.pause ? ", pause enabled" : + dev->phy.asym_pause ? ", assymetric pause enabled" : ""); + else + printk(KERN_INFO "%s: link is down\n", dev->ndev->name); +} - emac_mac_dump(dev); - emac_mal_dump(dev); - emac_desc_dump(dev); +/* Process ctx, rtnl_lock semaphore */ +static int emac_open(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + struct ocp_func_emac_data *emacdata = dev->def->additions; + int err, i; + + DBG("%d: open" NL, dev->def->index); + + /* Setup error IRQ handler */ + err = request_irq(dev->def->irq, emac_irq, 0, "EMAC", dev); + if (err) { + printk(KERN_ERR "%s: failed to request IRQ %d\n", + ndev->name, dev->def->irq); + return err; } - /* Disable RX channel */ - spin_lock_irqsave(&fep->lock, flags); - mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask); - - /* For now, charge the error against all emacs */ - fep->stats.rx_errors++; - - /* so do we have any good packets still? */ - emac_rx_clean(dev); - - /* When the interface is restarted it resets processing to the - * first descriptor in the table. - */ - - fep->rx_slot = 0; - emac_rx_fill(dev, 0); + /* Allocate RX ring */ + for (i = 0; i < NUM_RX_BUFF; ++i) + if (emac_alloc_rx_skb(dev, i, GFP_KERNEL)) { + printk(KERN_ERR "%s: failed to allocate RX ring\n", + ndev->name); + goto oom; + } - set_mal_dcrn(fep->mal, DCRN_MALRXEOBISR, fep->commac.rx_chan_mask); - set_mal_dcrn(fep->mal, DCRN_MALRXDEIR, fep->commac.rx_chan_mask); + local_bh_disable(); + dev->tx_cnt = dev->tx_slot = dev->ack_slot = dev->rx_slot = + dev->commac.rx_stopped = 0; + dev->rx_sg_skb = NULL; + + if (dev->phy.address >= 0) { + int link_poll_interval; + if (dev->phy.def->ops->poll_link(&dev->phy)) { + dev->phy.def->ops->read_link(&dev->phy); + EMAC_RX_CLK_DEFAULT(dev->def->index); + netif_carrier_on(dev->ndev); + link_poll_interval = PHY_POLL_LINK_ON; + } else { + EMAC_RX_CLK_TX(dev->def->index); + netif_carrier_off(dev->ndev); + link_poll_interval = PHY_POLL_LINK_OFF; + } + mod_timer(&dev->link_timer, jiffies + link_poll_interval); + emac_print_link_status(dev); + } else + netif_carrier_on(dev->ndev); + + emac_configure(dev); + mal_poll_add(dev->mal, &dev->commac); + mal_enable_tx_channel(dev->mal, emacdata->mal_tx_chan); + mal_set_rcbs(dev->mal, emacdata->mal_rx_chan, emac_rx_size(ndev->mtu)); + mal_enable_rx_channel(dev->mal, emacdata->mal_rx_chan); + emac_tx_enable(dev); + emac_rx_enable(dev); + netif_start_queue(ndev); + local_bh_enable(); - /* Reenable the receive channels */ - mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask); - spin_unlock_irqrestore(&fep->lock, flags); + return 0; + oom: + emac_clean_rx_ring(dev); + free_irq(dev->def->irq, dev); + return -ENOMEM; } -static irqreturn_t -emac_mac_irq(int irq, void *dev_instance, struct pt_regs *regs) +/* BHs disabled */ +static int emac_link_differs(struct ocp_enet_private *dev) { - struct net_device *dev = dev_instance; - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; - unsigned long tmp_em0isr; + u32 r = in_be32(&dev->emacp->mr1); - /* EMAC interrupt */ - tmp_em0isr = in_be32(&emacp->em0isr); - if (tmp_em0isr & (EMAC_ISR_TE0 | EMAC_ISR_TE1)) { - /* This error is a hard transmit error - could retransmit */ - fep->stats.tx_errors++; + int duplex = r & EMAC_MR1_FDE ? DUPLEX_FULL : DUPLEX_HALF; + int speed, pause, asym_pause; - /* Reenable the transmit channel */ - mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask); + if (r & (EMAC_MR1_MF_1000 | EMAC_MR1_MF_1000GPCS)) + speed = SPEED_1000; + else if (r & EMAC_MR1_MF_100) + speed = SPEED_100; + else + speed = SPEED_10; - } else { - fep->stats.rx_errors++; + switch (r & (EMAC_MR1_EIFC | EMAC_MR1_APP)) { + case (EMAC_MR1_EIFC | EMAC_MR1_APP): + pause = 1; + asym_pause = 0; + break; + case EMAC_MR1_APP: + pause = 0; + asym_pause = 1; + break; + default: + pause = asym_pause = 0; } - - if (tmp_em0isr & EMAC_ISR_RP) - fep->stats.rx_length_errors++; - if (tmp_em0isr & EMAC_ISR_ALE) - fep->stats.rx_frame_errors++; - if (tmp_em0isr & EMAC_ISR_BFCS) - fep->stats.rx_crc_errors++; - if (tmp_em0isr & EMAC_ISR_PTLE) - fep->stats.rx_length_errors++; - if (tmp_em0isr & EMAC_ISR_ORE) - fep->stats.rx_length_errors++; - if (tmp_em0isr & EMAC_ISR_TE0) - fep->stats.tx_aborted_errors++; - - emac_err_dump(dev, tmp_em0isr); - - out_be32(&emacp->em0isr, tmp_em0isr); - - return IRQ_HANDLED; + return speed != dev->phy.speed || duplex != dev->phy.duplex || + pause != dev->phy.pause || asym_pause != dev->phy.asym_pause; } -static int emac_start_xmit(struct sk_buff *skb, struct net_device *dev) +/* BHs disabled */ +static void emac_link_timer(unsigned long data) { - unsigned short ctrl; - unsigned long flags; - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; - int len = skb->len; - unsigned int offset = 0, size, f, tx_slot_first; - unsigned int nr_frags = skb_shinfo(skb)->nr_frags; + struct ocp_enet_private *dev = (struct ocp_enet_private *)data; + int link_poll_interval; - spin_lock_irqsave(&fep->lock, flags); + DBG2("%d: link timer" NL, dev->def->index); - len -= skb->data_len; + if (dev->phy.def->ops->poll_link(&dev->phy)) { + if (!netif_carrier_ok(dev->ndev)) { + EMAC_RX_CLK_DEFAULT(dev->def->index); - if ((fep->tx_cnt + nr_frags + len / DESC_BUF_SIZE + 1) > NUM_TX_BUFF) { - PKT_DEBUG(("emac_start_xmit() stopping queue\n")); - netif_stop_queue(dev); - spin_unlock_irqrestore(&fep->lock, flags); - return -EBUSY; - } + /* Get new link parameters */ + dev->phy.def->ops->read_link(&dev->phy); - tx_slot_first = fep->tx_slot; + if (dev->tah_dev || emac_link_differs(dev)) + emac_full_tx_reset(dev->ndev); - while (len) { - size = min(len, DESC_BUF_SIZE); - - fep->tx_desc[fep->tx_slot].data_len = (short)size; - fep->tx_desc[fep->tx_slot].data_ptr = - (unsigned char *)dma_map_single(&fep->ocpdev->dev, - (void *)((unsigned int)skb-> - data + offset), - size, DMA_TO_DEVICE); - - ctrl = EMAC_TX_CTRL_DFLT; - if (fep->tx_slot != tx_slot_first) - ctrl |= MAL_TX_CTRL_READY; - if ((NUM_TX_BUFF - 1) == fep->tx_slot) - ctrl |= MAL_TX_CTRL_WRAP; - if (!nr_frags && (len == size)) { - ctrl |= MAL_TX_CTRL_LAST; - fep->tx_skb[fep->tx_slot] = skb; + netif_carrier_on(dev->ndev); + emac_print_link_status(dev); + } + link_poll_interval = PHY_POLL_LINK_ON; + } else { + if (netif_carrier_ok(dev->ndev)) { + EMAC_RX_CLK_TX(dev->def->index); +#if defined(CONFIG_IBM_EMAC_PHY_RX_CLK_FIX) + emac_reinitialize(dev); +#endif + netif_carrier_off(dev->ndev); + emac_print_link_status(dev); } - if (skb->ip_summed == CHECKSUM_HW) - ctrl |= EMAC_TX_CTRL_TAH_CSUM; - fep->tx_desc[fep->tx_slot].ctrl = ctrl; + /* Retry reset if the previous attempt failed. + * This is needed mostly for CONFIG_IBM_EMAC_PHY_RX_CLK_FIX + * case, but I left it here because it shouldn't trigger for + * sane PHYs anyway. + */ + if (unlikely(dev->reset_failed)) + emac_reinitialize(dev); - len -= size; - offset += size; + link_poll_interval = PHY_POLL_LINK_OFF; + } + mod_timer(&dev->link_timer, jiffies + link_poll_interval); +} - /* Bump tx count */ - if (++fep->tx_cnt == NUM_TX_BUFF) - netif_stop_queue(dev); +/* BHs disabled */ +static void emac_force_link_update(struct ocp_enet_private *dev) +{ + netif_carrier_off(dev->ndev); + if (timer_pending(&dev->link_timer)) + mod_timer(&dev->link_timer, jiffies + PHY_POLL_LINK_OFF); +} - /* Next descriptor */ - if (++fep->tx_slot == NUM_TX_BUFF) - fep->tx_slot = 0; - } +/* Process ctx, rtnl_lock semaphore */ +static int emac_close(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + struct ocp_func_emac_data *emacdata = dev->def->additions; - for (f = 0; f < nr_frags; f++) { - struct skb_frag_struct *frag; + DBG("%d: close" NL, dev->def->index); - frag = &skb_shinfo(skb)->frags[f]; - len = frag->size; - offset = 0; - - while (len) { - size = min(len, DESC_BUF_SIZE); - - dma_map_page(&fep->ocpdev->dev, - frag->page, - frag->page_offset + offset, - size, DMA_TO_DEVICE); - - ctrl = EMAC_TX_CTRL_DFLT | MAL_TX_CTRL_READY; - if ((NUM_TX_BUFF - 1) == fep->tx_slot) - ctrl |= MAL_TX_CTRL_WRAP; - if ((f == (nr_frags - 1)) && (len == size)) { - ctrl |= MAL_TX_CTRL_LAST; - fep->tx_skb[fep->tx_slot] = skb; - } + local_bh_disable(); - if (skb->ip_summed == CHECKSUM_HW) - ctrl |= EMAC_TX_CTRL_TAH_CSUM; + if (dev->phy.address >= 0) + del_timer_sync(&dev->link_timer); - fep->tx_desc[fep->tx_slot].data_len = (short)size; - fep->tx_desc[fep->tx_slot].data_ptr = - (char *)((page_to_pfn(frag->page) << PAGE_SHIFT) + - frag->page_offset + offset); - fep->tx_desc[fep->tx_slot].ctrl = ctrl; + netif_stop_queue(ndev); + emac_rx_disable(dev); + emac_tx_disable(dev); + mal_disable_rx_channel(dev->mal, emacdata->mal_rx_chan); + mal_disable_tx_channel(dev->mal, emacdata->mal_tx_chan); + mal_poll_del(dev->mal, &dev->commac); + local_bh_enable(); - len -= size; - offset += size; + emac_clean_tx_ring(dev); + emac_clean_rx_ring(dev); + free_irq(dev->def->irq, dev); - /* Bump tx count */ - if (++fep->tx_cnt == NUM_TX_BUFF) - netif_stop_queue(dev); + return 0; +} - /* Next descriptor */ - if (++fep->tx_slot == NUM_TX_BUFF) - fep->tx_slot = 0; - } +static inline u16 emac_tx_csum(struct ocp_enet_private *dev, + struct sk_buff *skb) +{ +#if defined(CONFIG_IBM_EMAC_TAH) + if (skb->ip_summed == CHECKSUM_HW) { + ++dev->stats.tx_packets_csum; + return EMAC_TX_CTRL_TAH_CSUM; } +#endif + return 0; +} - /* - * Deferred set READY on first descriptor of packet to - * avoid TX MAL race. - */ - fep->tx_desc[tx_slot_first].ctrl |= MAL_TX_CTRL_READY; - - /* Send the packet out. */ - out_be32(&emacp->em0tmr0, EMAC_TMR0_XMIT); +static inline int emac_xmit_finish(struct ocp_enet_private *dev, int len) +{ + struct emac_regs *p = dev->emacp; + struct net_device *ndev = dev->ndev; - fep->stats.tx_packets++; - fep->stats.tx_bytes += skb->len; + /* Send the packet out */ + out_be32(&p->tmr0, EMAC_TMR0_XMIT); - PKT_DEBUG(("emac_start_xmit() exitn")); + if (unlikely(++dev->tx_cnt == NUM_TX_BUFF)) { + netif_stop_queue(ndev); + DBG2("%d: stopped TX queue" NL, dev->def->index); + } - spin_unlock_irqrestore(&fep->lock, flags); + ndev->trans_start = jiffies; + ++dev->stats.tx_packets; + dev->stats.tx_bytes += len; return 0; } -static int emac_adjust_to_link(struct ocp_enet_private *fep) +/* BHs disabled */ +static int emac_start_xmit(struct sk_buff *skb, struct net_device *ndev) { - emac_t *emacp = fep->emacp; - unsigned long mode_reg; - int full_duplex, speed; + struct ocp_enet_private *dev = ndev->priv; + unsigned int len = skb->len; + int slot; - full_duplex = 0; - speed = SPEED_10; + u16 ctrl = EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP | MAL_TX_CTRL_READY | + MAL_TX_CTRL_LAST | emac_tx_csum(dev, skb); - /* set mode register 1 defaults */ - mode_reg = EMAC_M1_DEFAULT; - - /* Read link mode on PHY */ - if (fep->phy_mii.def->ops->read_link(&fep->phy_mii) == 0) { - /* If an error occurred, we don't deal with it yet */ - full_duplex = (fep->phy_mii.duplex == DUPLEX_FULL); - speed = fep->phy_mii.speed; + slot = dev->tx_slot++; + if (dev->tx_slot == NUM_TX_BUFF) { + dev->tx_slot = 0; + ctrl |= MAL_TX_CTRL_WRAP; } + DBG2("%d: xmit(%u) %d" NL, dev->def->index, len, slot); - /* set speed (default is 10Mb) */ - switch (speed) { - case SPEED_1000: - mode_reg |= EMAC_M1_RFS_16K; - if (fep->rgmii_dev) { - struct ibm_ocp_rgmii *rgmii = RGMII_PRIV(fep->rgmii_dev); - - if ((rgmii->mode[fep->rgmii_input] == RTBI) - || (rgmii->mode[fep->rgmii_input] == TBI)) - mode_reg |= EMAC_M1_MF_1000GPCS; - else - mode_reg |= EMAC_M1_MF_1000MBPS; - - emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input, - 1000); - } - break; - case SPEED_100: - mode_reg |= EMAC_M1_MF_100MBPS | EMAC_M1_RFS_4K; - if (fep->rgmii_dev) - emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input, - 100); - if (fep->zmii_dev) - emac_zmii_port_speed(fep->zmii_dev, fep->zmii_input, - 100); - break; - case SPEED_10: - default: - mode_reg = (mode_reg & ~EMAC_M1_MF_100MBPS) | EMAC_M1_RFS_4K; - if (fep->rgmii_dev) - emac_rgmii_port_speed(fep->rgmii_dev, fep->rgmii_input, - 10); - if (fep->zmii_dev) - emac_zmii_port_speed(fep->zmii_dev, fep->zmii_input, - 10); - } - - if (full_duplex) - mode_reg |= EMAC_M1_FDE | EMAC_M1_EIFC | EMAC_M1_IST; - else - mode_reg &= ~(EMAC_M1_FDE | EMAC_M1_EIFC | EMAC_M1_ILE); + dev->tx_skb[slot] = skb; + dev->tx_desc[slot].data_ptr = dma_map_single(dev->ldev, skb->data, len, + DMA_TO_DEVICE); + dev->tx_desc[slot].data_len = (u16) len; + barrier(); + dev->tx_desc[slot].ctrl = ctrl; - LINK_DEBUG(("%s: adjust to link, speed: %d, duplex: %d, opened: %d\n", - fep->ndev->name, speed, full_duplex, fep->opened)); - - printk(KERN_INFO "%s: Speed: %d, %s duplex.\n", - fep->ndev->name, speed, full_duplex ? "Full" : "Half"); - if (fep->opened) - out_be32(&emacp->em0mr1, mode_reg); - - return 0; + return emac_xmit_finish(dev, len); } -static int emac_set_mac_address(struct net_device *ndev, void *p) +#if defined(CONFIG_IBM_EMAC_TAH) +static inline int emac_xmit_split(struct ocp_enet_private *dev, int slot, + u32 pd, int len, int last, u16 base_ctrl) { - struct ocp_enet_private *fep = ndev->priv; - emac_t *emacp = fep->emacp; - struct sockaddr *addr = p; + while (1) { + u16 ctrl = base_ctrl; + int chunk = min(len, MAL_MAX_TX_SIZE); + len -= chunk; - if (!is_valid_ether_addr(addr->sa_data)) - return -EADDRNOTAVAIL; + slot = (slot + 1) % NUM_TX_BUFF; - memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len); + if (last && !len) + ctrl |= MAL_TX_CTRL_LAST; + if (slot == NUM_TX_BUFF - 1) + ctrl |= MAL_TX_CTRL_WRAP; - /* set the high address */ - out_be32(&emacp->em0iahr, - (fep->ndev->dev_addr[0] << 8) | fep->ndev->dev_addr[1]); + dev->tx_skb[slot] = NULL; + dev->tx_desc[slot].data_ptr = pd; + dev->tx_desc[slot].data_len = (u16) chunk; + dev->tx_desc[slot].ctrl = ctrl; + ++dev->tx_cnt; - /* set the low address */ - out_be32(&emacp->em0ialr, - (fep->ndev->dev_addr[2] << 24) | (fep->ndev->dev_addr[3] << 16) - | (fep->ndev->dev_addr[4] << 8) | fep->ndev->dev_addr[5]); + if (!len) + break; - return 0; + pd += chunk; + } + return slot; } -static int emac_change_mtu(struct net_device *dev, int new_mtu) +/* BHs disabled (SG version for TAH equipped EMACs) */ +static int emac_start_xmit_sg(struct sk_buff *skb, struct net_device *ndev) { - struct ocp_enet_private *fep = dev->priv; - int old_mtu = dev->mtu; - unsigned long mode_reg; - emac_t *emacp = fep->emacp; - u32 em0mr0; - int i, full; - unsigned long flags; + struct ocp_enet_private *dev = ndev->priv; + int nr_frags = skb_shinfo(skb)->nr_frags; + int len = skb->len, chunk; + int slot, i; + u16 ctrl; + u32 pd; - if ((new_mtu < EMAC_MIN_MTU) || (new_mtu > EMAC_MAX_MTU)) { - printk(KERN_ERR - "emac: Invalid MTU setting, MTU must be between %d and %d\n", - EMAC_MIN_MTU, EMAC_MAX_MTU); - return -EINVAL; - } + /* This is common "fast" path */ + if (likely(!nr_frags && len <= MAL_MAX_TX_SIZE)) + return emac_start_xmit(skb, ndev); - if (old_mtu != new_mtu && netif_running(dev)) { - /* Stop rx engine */ - em0mr0 = in_be32(&emacp->em0mr0); - out_be32(&emacp->em0mr0, em0mr0 & ~EMAC_M0_RXE); - - /* Wait for descriptors to be empty */ - do { - full = 0; - for (i = 0; i < NUM_RX_BUFF; i++) - if (!(fep->rx_desc[i].ctrl & MAL_RX_CTRL_EMPTY)) { - printk(KERN_NOTICE - "emac: RX ring is still full\n"); - full = 1; - } - } while (full); - - spin_lock_irqsave(&fep->lock, flags); - - mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask); - - /* Destroy all old rx skbs */ - for (i = 0; i < NUM_RX_BUFF; i++) { - dma_unmap_single(&fep->ocpdev->dev, - fep->rx_desc[i].data_ptr, - fep->rx_desc[i].data_len, - DMA_FROM_DEVICE); - dev_kfree_skb(fep->rx_skb[i]); - fep->rx_skb[i] = NULL; - } + len -= skb->data_len; - /* Set new rx_buffer_size, jumbo cap, and advertise new mtu */ - mode_reg = in_be32(&emacp->em0mr1); - if (new_mtu > ENET_DEF_MTU_SIZE) { - mode_reg |= EMAC_M1_JUMBO_ENABLE; - fep->rx_buffer_size = EMAC_MAX_FRAME; - } else { - mode_reg &= ~EMAC_M1_JUMBO_ENABLE; - fep->rx_buffer_size = ENET_DEF_BUF_SIZE; - } - dev->mtu = new_mtu; - out_be32(&emacp->em0mr1, mode_reg); + /* Note, this is only an *estimation*, we can still run out of empty + * slots because of the additional fragmentation into + * MAL_MAX_TX_SIZE-sized chunks + */ + if (unlikely(dev->tx_cnt + nr_frags + mal_tx_chunks(len) > NUM_TX_BUFF)) + goto stop_queue; + + ctrl = EMAC_TX_CTRL_GFCS | EMAC_TX_CTRL_GP | MAL_TX_CTRL_READY | + emac_tx_csum(dev, skb); + slot = dev->tx_slot; + + /* skb data */ + dev->tx_skb[slot] = NULL; + chunk = min(len, MAL_MAX_TX_SIZE); + dev->tx_desc[slot].data_ptr = pd = + dma_map_single(dev->ldev, skb->data, len, DMA_TO_DEVICE); + dev->tx_desc[slot].data_len = (u16) chunk; + len -= chunk; + if (unlikely(len)) + slot = emac_xmit_split(dev, slot, pd + chunk, len, !nr_frags, + ctrl); + /* skb fragments */ + for (i = 0; i < nr_frags; ++i) { + struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i]; + len = frag->size; - /* Re-init rx skbs */ - fep->rx_slot = 0; - emac_rx_fill(dev, 0); + if (unlikely(dev->tx_cnt + mal_tx_chunks(len) >= NUM_TX_BUFF)) + goto undo_frame; - /* Restart the rx engine */ - mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask); - out_be32(&emacp->em0mr0, em0mr0 | EMAC_M0_RXE); + pd = dma_map_page(dev->ldev, frag->page, frag->page_offset, len, + DMA_TO_DEVICE); - spin_unlock_irqrestore(&fep->lock, flags); + slot = emac_xmit_split(dev, slot, pd, len, i == nr_frags - 1, + ctrl); } - return 0; -} + DBG2("%d: xmit_sg(%u) %d - %d" NL, dev->def->index, skb->len, + dev->tx_slot, slot); -static void __emac_set_multicast_list(struct net_device *dev) -{ - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; - u32 rmr = in_be32(&emacp->em0rmr); + /* Attach skb to the last slot so we don't release it too early */ + dev->tx_skb[slot] = skb; - /* First clear all special bits, they can be set later */ - rmr &= ~(EMAC_RMR_PME | EMAC_RMR_PMME | EMAC_RMR_MAE); + /* Send the packet out */ + if (dev->tx_slot == NUM_TX_BUFF - 1) + ctrl |= MAL_TX_CTRL_WRAP; + barrier(); + dev->tx_desc[dev->tx_slot].ctrl = ctrl; + dev->tx_slot = (slot + 1) % NUM_TX_BUFF; - if (dev->flags & IFF_PROMISC) { - rmr |= EMAC_RMR_PME; - } else if (dev->flags & IFF_ALLMULTI || 32 < dev->mc_count) { - /* - * Must be setting up to use multicast - * Now check for promiscuous multicast - */ - rmr |= EMAC_RMR_PMME; - } else if (dev->flags & IFF_MULTICAST && 0 < dev->mc_count) { - unsigned short em0gaht[4] = { 0, 0, 0, 0 }; - struct dev_mc_list *dmi; - - /* Need to hash on the multicast address. */ - for (dmi = dev->mc_list; dmi; dmi = dmi->next) { - unsigned long mc_crc; - unsigned int bit_number; - - mc_crc = ether_crc(6, (char *)dmi->dmi_addr); - bit_number = 63 - (mc_crc >> 26); /* MSB: 0 LSB: 63 */ - em0gaht[bit_number >> 4] |= - 0x8000 >> (bit_number & 0x0f); - } - emacp->em0gaht1 = em0gaht[0]; - emacp->em0gaht2 = em0gaht[1]; - emacp->em0gaht3 = em0gaht[2]; - emacp->em0gaht4 = em0gaht[3]; + return emac_xmit_finish(dev, skb->len); - /* Turn on multicast addressing */ - rmr |= EMAC_RMR_MAE; + undo_frame: + /* Well, too bad. Our previous estimation was overly optimistic. + * Undo everything. + */ + while (slot != dev->tx_slot) { + dev->tx_desc[slot].ctrl = 0; + --dev->tx_cnt; + if (--slot < 0) + slot = NUM_TX_BUFF - 1; } - out_be32(&emacp->em0rmr, rmr); + ++dev->estats.tx_undo; + + stop_queue: + netif_stop_queue(ndev); + DBG2("%d: stopped TX queue" NL, dev->def->index); + return 1; } +#else +# define emac_start_xmit_sg emac_start_xmit +#endif /* !defined(CONFIG_IBM_EMAC_TAH) */ -static int emac_init_tah(struct ocp_enet_private *fep) +/* BHs disabled */ +static void emac_parse_tx_error(struct ocp_enet_private *dev, u16 ctrl) { - tah_t *tahp; + struct ibm_emac_error_stats *st = &dev->estats; + DBG("%d: BD TX error %04x" NL, dev->def->index, ctrl); + + ++st->tx_bd_errors; + if (ctrl & EMAC_TX_ST_BFCS) + ++st->tx_bd_bad_fcs; + if (ctrl & EMAC_TX_ST_LCS) + ++st->tx_bd_carrier_loss; + if (ctrl & EMAC_TX_ST_ED) + ++st->tx_bd_excessive_deferral; + if (ctrl & EMAC_TX_ST_EC) + ++st->tx_bd_excessive_collisions; + if (ctrl & EMAC_TX_ST_LC) + ++st->tx_bd_late_collision; + if (ctrl & EMAC_TX_ST_MC) + ++st->tx_bd_multple_collisions; + if (ctrl & EMAC_TX_ST_SC) + ++st->tx_bd_single_collision; + if (ctrl & EMAC_TX_ST_UR) + ++st->tx_bd_underrun; + if (ctrl & EMAC_TX_ST_SQE) + ++st->tx_bd_sqe; +} - /* Initialize TAH and enable checksum verification */ - tahp = (tah_t *) ioremap(fep->tah_dev->def->paddr, sizeof(*tahp)); +static void emac_poll_tx(void *param) +{ + struct ocp_enet_private *dev = param; + DBG2("%d: poll_tx, %d %d" NL, dev->def->index, dev->tx_cnt, + dev->ack_slot); + + if (dev->tx_cnt) { + u16 ctrl; + int slot = dev->ack_slot, n = 0; + again: + ctrl = dev->tx_desc[slot].ctrl; + if (!(ctrl & MAL_TX_CTRL_READY)) { + struct sk_buff *skb = dev->tx_skb[slot]; + ++n; + + if (skb) { + dev_kfree_skb(skb); + dev->tx_skb[slot] = NULL; + } + slot = (slot + 1) % NUM_TX_BUFF; - if (tahp == NULL) { - printk(KERN_ERR "tah%d: Cannot ioremap TAH registers!\n", - fep->tah_dev->def->index); + if (unlikely(EMAC_IS_BAD_TX(ctrl))) + emac_parse_tx_error(dev, ctrl); - return -ENOMEM; - } - - out_be32(&tahp->tah_mr, TAH_MR_SR); + if (--dev->tx_cnt) + goto again; + } + if (n) { + dev->ack_slot = slot; + if (netif_queue_stopped(dev->ndev) && + dev->tx_cnt < EMAC_TX_WAKEUP_THRESH) + netif_wake_queue(dev->ndev); - /* wait for reset to complete */ - while (in_be32(&tahp->tah_mr) & TAH_MR_SR) ; + DBG2("%d: tx %d pkts" NL, dev->def->index, n); + } + } +} - /* 10KB TAH TX FIFO accomodates the max MTU of 9000 */ - out_be32(&tahp->tah_mr, - TAH_MR_CVR | TAH_MR_ST_768 | TAH_MR_TFS_10KB | TAH_MR_DTFP | - TAH_MR_DIG); +static inline void emac_recycle_rx_skb(struct ocp_enet_private *dev, int slot, + int len) +{ + struct sk_buff *skb = dev->rx_skb[slot]; + DBG2("%d: recycle %d %d" NL, dev->def->index, slot, len); - iounmap(tahp); + if (len) + dma_map_single(dev->ldev, skb->data - 2, + EMAC_DMA_ALIGN(len + 2), DMA_FROM_DEVICE); - return 0; + dev->rx_desc[slot].data_len = 0; + barrier(); + dev->rx_desc[slot].ctrl = MAL_RX_CTRL_EMPTY | + (slot == (NUM_RX_BUFF - 1) ? MAL_RX_CTRL_WRAP : 0); } -static void emac_init_rings(struct net_device *dev) +static void emac_parse_rx_error(struct ocp_enet_private *dev, u16 ctrl) { - struct ocp_enet_private *ep = dev->priv; - int loop; + struct ibm_emac_error_stats *st = &dev->estats; + DBG("%d: BD RX error %04x" NL, dev->def->index, ctrl); + + ++st->rx_bd_errors; + if (ctrl & EMAC_RX_ST_OE) + ++st->rx_bd_overrun; + if (ctrl & EMAC_RX_ST_BP) + ++st->rx_bd_bad_packet; + if (ctrl & EMAC_RX_ST_RP) + ++st->rx_bd_runt_packet; + if (ctrl & EMAC_RX_ST_SE) + ++st->rx_bd_short_event; + if (ctrl & EMAC_RX_ST_AE) + ++st->rx_bd_alignment_error; + if (ctrl & EMAC_RX_ST_BFCS) + ++st->rx_bd_bad_fcs; + if (ctrl & EMAC_RX_ST_PTL) + ++st->rx_bd_packet_too_long; + if (ctrl & EMAC_RX_ST_ORE) + ++st->rx_bd_out_of_range; + if (ctrl & EMAC_RX_ST_IRE) + ++st->rx_bd_in_range; +} - ep->tx_desc = (struct mal_descriptor *)((char *)ep->mal->tx_virt_addr + - (ep->mal_tx_chan * - MAL_DT_ALIGN)); - ep->rx_desc = - (struct mal_descriptor *)((char *)ep->mal->rx_virt_addr + - (ep->mal_rx_chan * MAL_DT_ALIGN)); +static inline void emac_rx_csum(struct ocp_enet_private *dev, + struct sk_buff *skb, u16 ctrl) +{ +#if defined(CONFIG_IBM_EMAC_TAH) + if (!ctrl && dev->tah_dev) { + skb->ip_summed = CHECKSUM_UNNECESSARY; + ++dev->stats.rx_packets_csum; + } +#endif +} - /* Fill in the transmit descriptor ring. */ - for (loop = 0; loop < NUM_TX_BUFF; loop++) { - if (ep->tx_skb[loop]) { - dma_unmap_single(&ep->ocpdev->dev, - ep->tx_desc[loop].data_ptr, - ep->tx_desc[loop].data_len, - DMA_TO_DEVICE); - dev_kfree_skb_irq(ep->tx_skb[loop]); +static inline int emac_rx_sg_append(struct ocp_enet_private *dev, int slot) +{ + if (likely(dev->rx_sg_skb != NULL)) { + int len = dev->rx_desc[slot].data_len; + int tot_len = dev->rx_sg_skb->len + len; + + if (unlikely(tot_len + 2 > dev->rx_skb_size)) { + ++dev->estats.rx_dropped_mtu; + dev_kfree_skb(dev->rx_sg_skb); + dev->rx_sg_skb = NULL; + } else { + cacheable_memcpy(dev->rx_sg_skb->tail, + dev->rx_skb[slot]->data, len); + skb_put(dev->rx_sg_skb, len); + emac_recycle_rx_skb(dev, slot, len); + return 0; } - ep->tx_skb[loop] = NULL; - ep->tx_desc[loop].ctrl = 0; - ep->tx_desc[loop].data_len = 0; - ep->tx_desc[loop].data_ptr = NULL; - } - ep->tx_desc[loop - 1].ctrl |= MAL_TX_CTRL_WRAP; - - /* Format the receive descriptor ring. */ - ep->rx_slot = 0; - /* Default is MTU=1500 + Ethernet overhead */ - ep->rx_buffer_size = dev->mtu + ENET_HEADER_SIZE + ENET_FCS_SIZE; - emac_rx_fill(dev, 0); - if (ep->rx_slot != 0) { - printk(KERN_ERR - "%s: Not enough mem for RxChain durning Open?\n", - dev->name); - /*We couldn't fill the ring at startup? - *We could clean up and fail to open but right now we will try to - *carry on. It may be a sign of a bad NUM_RX_BUFF value - */ } - - ep->tx_cnt = 0; - ep->tx_slot = 0; - ep->ack_slot = 0; + emac_recycle_rx_skb(dev, slot, 0); + return -1; } -static void emac_reset_configure(struct ocp_enet_private *fep) +/* BHs disabled */ +static int emac_poll_rx(void *param, int budget) { - emac_t *emacp = fep->emacp; - int i; - - mal_disable_tx_channels(fep->mal, fep->commac.tx_chan_mask); - mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask); + struct ocp_enet_private *dev = param; + int slot = dev->rx_slot, received = 0; - /* - * Check for a link, some PHYs don't provide a clock if - * no link is present. Some EMACs will not come out of - * soft reset without a PHY clock present. - */ - if (fep->phy_mii.def->ops->poll_link(&fep->phy_mii)) { - /* Reset the EMAC */ - out_be32(&emacp->em0mr0, EMAC_M0_SRST); - udelay(20); - for (i = 0; i < 100; i++) { - if ((in_be32(&emacp->em0mr0) & EMAC_M0_SRST) == 0) - break; - udelay(10); - } - - if (i >= 100) { - printk(KERN_ERR "%s: Cannot reset EMAC\n", - fep->ndev->name); - return; - } - } + DBG2("%d: poll_rx(%d)" NL, dev->def->index, budget); - /* Switch IRQs off for now */ - out_be32(&emacp->em0iser, 0); + again: + while (budget > 0) { + int len; + struct sk_buff *skb; + u16 ctrl = dev->rx_desc[slot].ctrl; - /* Configure MAL rx channel */ - mal_set_rcbs(fep->mal, fep->mal_rx_chan, DESC_BUF_SIZE_REG); + if (ctrl & MAL_RX_CTRL_EMPTY) + break; - /* set the high address */ - out_be32(&emacp->em0iahr, - (fep->ndev->dev_addr[0] << 8) | fep->ndev->dev_addr[1]); + skb = dev->rx_skb[slot]; + barrier(); + len = dev->rx_desc[slot].data_len; - /* set the low address */ - out_be32(&emacp->em0ialr, - (fep->ndev->dev_addr[2] << 24) | (fep->ndev->dev_addr[3] << 16) - | (fep->ndev->dev_addr[4] << 8) | fep->ndev->dev_addr[5]); + if (unlikely(!MAL_IS_SINGLE_RX(ctrl))) + goto sg; - /* Adjust to link */ - if (netif_carrier_ok(fep->ndev)) - emac_adjust_to_link(fep); + ctrl &= EMAC_BAD_RX_MASK; + if (unlikely(ctrl && ctrl != EMAC_RX_TAH_BAD_CSUM)) { + emac_parse_rx_error(dev, ctrl); + ++dev->estats.rx_dropped_error; + emac_recycle_rx_skb(dev, slot, 0); + len = 0; + goto next; + } - /* enable broadcast/individual address and RX FIFO defaults */ - out_be32(&emacp->em0rmr, EMAC_RMR_DEFAULT); + if (len && len < EMAC_RX_COPY_THRESH) { + struct sk_buff *copy_skb = + alloc_skb(len + EMAC_RX_SKB_HEADROOM + 2, GFP_ATOMIC); + if (unlikely(!copy_skb)) + goto oom; + + skb_reserve(copy_skb, EMAC_RX_SKB_HEADROOM + 2); + cacheable_memcpy(copy_skb->data - 2, skb->data - 2, + len + 2); + emac_recycle_rx_skb(dev, slot, len); + skb = copy_skb; + } else if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC))) + goto oom; + + skb_put(skb, len); + push_packet: + skb->dev = dev->ndev; + skb->protocol = eth_type_trans(skb, dev->ndev); + emac_rx_csum(dev, skb, ctrl); + + if (unlikely(netif_receive_skb(skb) == NET_RX_DROP)) + ++dev->estats.rx_dropped_stack; + next: + ++dev->stats.rx_packets; + skip: + dev->stats.rx_bytes += len; + slot = (slot + 1) % NUM_RX_BUFF; + --budget; + ++received; + continue; + sg: + if (ctrl & MAL_RX_CTRL_FIRST) { + BUG_ON(dev->rx_sg_skb); + if (unlikely(emac_alloc_rx_skb(dev, slot, GFP_ATOMIC))) { + DBG("%d: rx OOM %d" NL, dev->def->index, slot); + ++dev->estats.rx_dropped_oom; + emac_recycle_rx_skb(dev, slot, 0); + } else { + dev->rx_sg_skb = skb; + skb_put(skb, len); + } + } else if (!emac_rx_sg_append(dev, slot) && + (ctrl & MAL_RX_CTRL_LAST)) { + + skb = dev->rx_sg_skb; + dev->rx_sg_skb = NULL; + + ctrl &= EMAC_BAD_RX_MASK; + if (unlikely(ctrl && ctrl != EMAC_RX_TAH_BAD_CSUM)) { + emac_parse_rx_error(dev, ctrl); + ++dev->estats.rx_dropped_error; + dev_kfree_skb(skb); + len = 0; + } else + goto push_packet; + } + goto skip; + oom: + DBG("%d: rx OOM %d" NL, dev->def->index, slot); + /* Drop the packet and recycle skb */ + ++dev->estats.rx_dropped_oom; + emac_recycle_rx_skb(dev, slot, 0); + goto next; + } - /* set transmit request threshold register */ - out_be32(&emacp->em0trtr, EMAC_TRTR_DEFAULT); + if (received) { + DBG2("%d: rx %d BDs" NL, dev->def->index, received); + dev->rx_slot = slot; + } - /* Reconfigure multicast */ - __emac_set_multicast_list(fep->ndev); + if (unlikely(budget && dev->commac.rx_stopped)) { + struct ocp_func_emac_data *emacdata = dev->def->additions; - /* Set receiver/transmitter defaults */ - out_be32(&emacp->em0rwmr, EMAC_RWMR_DEFAULT); - out_be32(&emacp->em0tmr0, EMAC_TMR0_DEFAULT); - out_be32(&emacp->em0tmr1, EMAC_TMR1_DEFAULT); + barrier(); + if (!(dev->rx_desc[slot].ctrl & MAL_RX_CTRL_EMPTY)) { + DBG2("%d: rx restart" NL, dev->def->index); + received = 0; + goto again; + } - /* set frame gap */ - out_be32(&emacp->em0ipgvr, CONFIG_IBM_EMAC_FGAP); - - /* set VLAN Tag Protocol Identifier */ - out_be32(&emacp->em0vtpid, 0x8100); + if (dev->rx_sg_skb) { + DBG2("%d: dropping partial rx packet" NL, + dev->def->index); + ++dev->estats.rx_dropped_error; + dev_kfree_skb(dev->rx_sg_skb); + dev->rx_sg_skb = NULL; + } - /* Init ring buffers */ - emac_init_rings(fep->ndev); + dev->commac.rx_stopped = 0; + mal_enable_rx_channel(dev->mal, emacdata->mal_rx_chan); + emac_rx_enable(dev); + dev->rx_slot = 0; + } + return received; } -static void emac_kick(struct ocp_enet_private *fep) +/* BHs disabled */ +static int emac_peek_rx(void *param) { - emac_t *emacp = fep->emacp; - unsigned long emac_ier; - - emac_ier = EMAC_ISR_PP | EMAC_ISR_BP | EMAC_ISR_RP | - EMAC_ISR_SE | EMAC_ISR_PTLE | EMAC_ISR_ALE | - EMAC_ISR_BFCS | EMAC_ISR_ORE | EMAC_ISR_IRE; + struct ocp_enet_private *dev = param; + return !(dev->rx_desc[dev->rx_slot].ctrl & MAL_RX_CTRL_EMPTY); +} - out_be32(&emacp->em0iser, emac_ier); +/* BHs disabled */ +static int emac_peek_rx_sg(void *param) +{ + struct ocp_enet_private *dev = param; + int slot = dev->rx_slot; + while (1) { + u16 ctrl = dev->rx_desc[slot].ctrl; + if (ctrl & MAL_RX_CTRL_EMPTY) + return 0; + else if (ctrl & MAL_RX_CTRL_LAST) + return 1; - /* enable all MAL transmit and receive channels */ - mal_enable_tx_channels(fep->mal, fep->commac.tx_chan_mask); - mal_enable_rx_channels(fep->mal, fep->commac.rx_chan_mask); + slot = (slot + 1) % NUM_RX_BUFF; - /* set transmit and receive enable */ - out_be32(&emacp->em0mr0, EMAC_M0_TXE | EMAC_M0_RXE); + /* I'm just being paranoid here :) */ + if (unlikely(slot == dev->rx_slot)) + return 0; + } } -static void -emac_start_link(struct ocp_enet_private *fep, struct ethtool_cmd *ep) +/* Hard IRQ */ +static void emac_rxde(void *param) { - u32 advertise; - int autoneg; - int forced_speed; - int forced_duplex; + struct ocp_enet_private *dev = param; + ++dev->estats.rx_stopped; + emac_rx_disable_async(dev); +} - /* Default advertise */ - advertise = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | - ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | - ADVERTISED_1000baseT_Half | ADVERTISED_1000baseT_Full; - autoneg = fep->want_autoneg; - forced_speed = fep->phy_mii.speed; - forced_duplex = fep->phy_mii.duplex; +/* Hard IRQ */ +static irqreturn_t emac_irq(int irq, void *dev_instance, struct pt_regs *regs) +{ + struct ocp_enet_private *dev = dev_instance; + struct emac_regs *p = dev->emacp; + struct ibm_emac_error_stats *st = &dev->estats; + + u32 isr = in_be32(&p->isr); + out_be32(&p->isr, isr); + + DBG("%d: isr = %08x" NL, dev->def->index, isr); + + if (isr & EMAC_ISR_TXPE) + ++st->tx_parity; + if (isr & EMAC_ISR_RXPE) + ++st->rx_parity; + if (isr & EMAC_ISR_TXUE) + ++st->tx_underrun; + if (isr & EMAC_ISR_RXOE) + ++st->rx_fifo_overrun; + if (isr & EMAC_ISR_OVR) + ++st->rx_overrun; + if (isr & EMAC_ISR_BP) + ++st->rx_bad_packet; + if (isr & EMAC_ISR_RP) + ++st->rx_runt_packet; + if (isr & EMAC_ISR_SE) + ++st->rx_short_event; + if (isr & EMAC_ISR_ALE) + ++st->rx_alignment_error; + if (isr & EMAC_ISR_BFCS) + ++st->rx_bad_fcs; + if (isr & EMAC_ISR_PTLE) + ++st->rx_packet_too_long; + if (isr & EMAC_ISR_ORE) + ++st->rx_out_of_range; + if (isr & EMAC_ISR_IRE) + ++st->rx_in_range; + if (isr & EMAC_ISR_SQE) + ++st->tx_sqe; + if (isr & EMAC_ISR_TE) + ++st->tx_errors; - /* Setup link parameters */ - if (ep) { - if (ep->autoneg == AUTONEG_ENABLE) { - advertise = ep->advertising; - autoneg = 1; - } else { - autoneg = 0; - forced_speed = ep->speed; - forced_duplex = ep->duplex; - } - } + return IRQ_HANDLED; +} - /* Configure PHY & start aneg */ - fep->want_autoneg = autoneg; - if (autoneg) { - LINK_DEBUG(("%s: start link aneg, advertise: 0x%x\n", - fep->ndev->name, advertise)); - fep->phy_mii.def->ops->setup_aneg(&fep->phy_mii, advertise); - } else { - LINK_DEBUG(("%s: start link forced, speed: %d, duplex: %d\n", - fep->ndev->name, forced_speed, forced_duplex)); - fep->phy_mii.def->ops->setup_forced(&fep->phy_mii, forced_speed, - forced_duplex); - } - fep->timer_ticks = 0; - mod_timer(&fep->link_timer, jiffies + HZ); +static struct net_device_stats *emac_stats(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + struct ibm_emac_stats *st = &dev->stats; + struct ibm_emac_error_stats *est = &dev->estats; + struct net_device_stats *nst = &dev->nstats; + + DBG2("%d: stats" NL, dev->def->index); + + /* Compute "legacy" statistics */ + local_irq_disable(); + nst->rx_packets = (unsigned long)st->rx_packets; + nst->rx_bytes = (unsigned long)st->rx_bytes; + nst->tx_packets = (unsigned long)st->tx_packets; + nst->tx_bytes = (unsigned long)st->tx_bytes; + nst->rx_dropped = (unsigned long)(est->rx_dropped_oom + + est->rx_dropped_error + + est->rx_dropped_resize + + est->rx_dropped_mtu); + nst->tx_dropped = (unsigned long)est->tx_dropped; + + nst->rx_errors = (unsigned long)est->rx_bd_errors; + nst->rx_fifo_errors = (unsigned long)(est->rx_bd_overrun + + est->rx_fifo_overrun + + est->rx_overrun); + nst->rx_frame_errors = (unsigned long)(est->rx_bd_alignment_error + + est->rx_alignment_error); + nst->rx_crc_errors = (unsigned long)(est->rx_bd_bad_fcs + + est->rx_bad_fcs); + nst->rx_length_errors = (unsigned long)(est->rx_bd_runt_packet + + est->rx_bd_short_event + + est->rx_bd_packet_too_long + + est->rx_bd_out_of_range + + est->rx_bd_in_range + + est->rx_runt_packet + + est->rx_short_event + + est->rx_packet_too_long + + est->rx_out_of_range + + est->rx_in_range); + + nst->tx_errors = (unsigned long)(est->tx_bd_errors + est->tx_errors); + nst->tx_fifo_errors = (unsigned long)(est->tx_bd_underrun + + est->tx_underrun); + nst->tx_carrier_errors = (unsigned long)est->tx_bd_carrier_loss; + nst->collisions = (unsigned long)(est->tx_bd_excessive_deferral + + est->tx_bd_excessive_collisions + + est->tx_bd_late_collision + + est->tx_bd_multple_collisions); + local_irq_enable(); + return nst; } -static void emac_link_timer(unsigned long data) +static void emac_remove(struct ocp_device *ocpdev) { - struct ocp_enet_private *fep = (struct ocp_enet_private *)data; - int link; + struct ocp_enet_private *dev = ocp_get_drvdata(ocpdev); - if (fep->going_away) - return; + DBG("%d: remove" NL, dev->def->index); - spin_lock_irq(&fep->lock); + ocp_set_drvdata(ocpdev, 0); + unregister_netdev(dev->ndev); - link = fep->phy_mii.def->ops->poll_link(&fep->phy_mii); - LINK_DEBUG(("%s: poll_link: %d\n", fep->ndev->name, link)); + tah_fini(dev->tah_dev); + rgmii_fini(dev->rgmii_dev, dev->rgmii_input); + zmii_fini(dev->zmii_dev, dev->zmii_input); - if (link == netif_carrier_ok(fep->ndev)) { - if (!link && fep->want_autoneg && (++fep->timer_ticks) > 10) - emac_start_link(fep, NULL); - goto out; - } - printk(KERN_INFO "%s: Link is %s\n", fep->ndev->name, - link ? "Up" : "Down"); - if (link) { - netif_carrier_on(fep->ndev); - /* Chip needs a full reset on config change. That sucks, so I - * should ultimately move that to some tasklet to limit - * latency peaks caused by this code - */ - emac_reset_configure(fep); - if (fep->opened) - emac_kick(fep); - } else { - fep->timer_ticks = 0; - netif_carrier_off(fep->ndev); - } - out: - mod_timer(&fep->link_timer, jiffies + HZ); - spin_unlock_irq(&fep->lock); + emac_dbg_register(dev->def->index, 0); + + mal_unregister_commac(dev->mal, &dev->commac); + iounmap((void *)dev->emacp); + kfree(dev->ndev); } -static void emac_set_multicast_list(struct net_device *dev) -{ - struct ocp_enet_private *fep = dev->priv; +static struct mal_commac_ops emac_commac_ops = { + .poll_tx = &emac_poll_tx, + .poll_rx = &emac_poll_rx, + .peek_rx = &emac_peek_rx, + .rxde = &emac_rxde, +}; - spin_lock_irq(&fep->lock); - __emac_set_multicast_list(dev); - spin_unlock_irq(&fep->lock); -} +static struct mal_commac_ops emac_commac_sg_ops = { + .poll_tx = &emac_poll_tx, + .poll_rx = &emac_poll_rx, + .peek_rx = &emac_peek_rx_sg, + .rxde = &emac_rxde, +}; -static int emac_get_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +/* Ethtool support */ +static int emac_ethtool_get_settings(struct net_device *ndev, + struct ethtool_cmd *cmd) { - struct ocp_enet_private *fep = ndev->priv; + struct ocp_enet_private *dev = ndev->priv; - cmd->supported = fep->phy_mii.def->features; + cmd->supported = dev->phy.features; cmd->port = PORT_MII; - cmd->transceiver = XCVR_EXTERNAL; - cmd->phy_address = fep->mii_phy_addr; - spin_lock_irq(&fep->lock); - cmd->autoneg = fep->want_autoneg; - cmd->speed = fep->phy_mii.speed; - cmd->duplex = fep->phy_mii.duplex; - spin_unlock_irq(&fep->lock); + cmd->phy_address = dev->phy.address; + cmd->transceiver = + dev->phy.address >= 0 ? XCVR_EXTERNAL : XCVR_INTERNAL; + + local_bh_disable(); + cmd->advertising = dev->phy.advertising; + cmd->autoneg = dev->phy.autoneg; + cmd->speed = dev->phy.speed; + cmd->duplex = dev->phy.duplex; + local_bh_enable(); + return 0; } -static int emac_set_settings(struct net_device *ndev, struct ethtool_cmd *cmd) +static int emac_ethtool_set_settings(struct net_device *ndev, + struct ethtool_cmd *cmd) { - struct ocp_enet_private *fep = ndev->priv; - unsigned long features = fep->phy_mii.def->features; + struct ocp_enet_private *dev = ndev->priv; + u32 f = dev->phy.features; - if (!capable(CAP_NET_ADMIN)) - return -EPERM; + DBG("%d: set_settings(%d, %d, %d, 0x%08x)" NL, dev->def->index, + cmd->autoneg, cmd->speed, cmd->duplex, cmd->advertising); + /* Basic sanity checks */ + if (dev->phy.address < 0) + return -EOPNOTSUPP; if (cmd->autoneg != AUTONEG_ENABLE && cmd->autoneg != AUTONEG_DISABLE) return -EINVAL; if (cmd->autoneg == AUTONEG_ENABLE && cmd->advertising == 0) return -EINVAL; if (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) return -EINVAL; - if (cmd->autoneg == AUTONEG_DISABLE) + + if (cmd->autoneg == AUTONEG_DISABLE) { switch (cmd->speed) { case SPEED_10: - if (cmd->duplex == DUPLEX_HALF && - (features & SUPPORTED_10baseT_Half) == 0) + if (cmd->duplex == DUPLEX_HALF + && !(f & SUPPORTED_10baseT_Half)) return -EINVAL; - if (cmd->duplex == DUPLEX_FULL && - (features & SUPPORTED_10baseT_Full) == 0) + if (cmd->duplex == DUPLEX_FULL + && !(f & SUPPORTED_10baseT_Full)) return -EINVAL; break; case SPEED_100: - if (cmd->duplex == DUPLEX_HALF && - (features & SUPPORTED_100baseT_Half) == 0) + if (cmd->duplex == DUPLEX_HALF + && !(f & SUPPORTED_100baseT_Half)) return -EINVAL; - if (cmd->duplex == DUPLEX_FULL && - (features & SUPPORTED_100baseT_Full) == 0) + if (cmd->duplex == DUPLEX_FULL + && !(f & SUPPORTED_100baseT_Full)) return -EINVAL; break; case SPEED_1000: - if (cmd->duplex == DUPLEX_HALF && - (features & SUPPORTED_1000baseT_Half) == 0) + if (cmd->duplex == DUPLEX_HALF + && !(f & SUPPORTED_1000baseT_Half)) return -EINVAL; - if (cmd->duplex == DUPLEX_FULL && - (features & SUPPORTED_1000baseT_Full) == 0) + if (cmd->duplex == DUPLEX_FULL + && !(f & SUPPORTED_1000baseT_Full)) return -EINVAL; break; default: return -EINVAL; - } else if ((features & SUPPORTED_Autoneg) == 0) - return -EINVAL; - spin_lock_irq(&fep->lock); - emac_start_link(fep, cmd); - spin_unlock_irq(&fep->lock); + } + + local_bh_disable(); + dev->phy.def->ops->setup_forced(&dev->phy, cmd->speed, + cmd->duplex); + + } else { + if (!(f & SUPPORTED_Autoneg)) + return -EINVAL; + + local_bh_disable(); + dev->phy.def->ops->setup_aneg(&dev->phy, + (cmd->advertising & f) | + (dev->phy.advertising & + (ADVERTISED_Pause | + ADVERTISED_Asym_Pause))); + } + emac_force_link_update(dev); + local_bh_enable(); + return 0; } -static void -emac_get_drvinfo(struct net_device *ndev, struct ethtool_drvinfo *info) +static void emac_ethtool_get_ringparam(struct net_device *ndev, + struct ethtool_ringparam *rp) { - struct ocp_enet_private *fep = ndev->priv; - - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - info->fw_version[0] = '\0'; - sprintf(info->bus_info, "IBM EMAC %d", fep->ocpdev->def->index); - info->regdump_len = 0; + rp->rx_max_pending = rp->rx_pending = NUM_RX_BUFF; + rp->tx_max_pending = rp->tx_pending = NUM_TX_BUFF; } -static int emac_nway_reset(struct net_device *ndev) +static void emac_ethtool_get_pauseparam(struct net_device *ndev, + struct ethtool_pauseparam *pp) { - struct ocp_enet_private *fep = ndev->priv; + struct ocp_enet_private *dev = ndev->priv; + + local_bh_disable(); + if ((dev->phy.features & SUPPORTED_Autoneg) && + (dev->phy.advertising & (ADVERTISED_Pause | ADVERTISED_Asym_Pause))) + pp->autoneg = 1; + + if (dev->phy.duplex == DUPLEX_FULL) { + if (dev->phy.pause) + pp->rx_pause = pp->tx_pause = 1; + else if (dev->phy.asym_pause) + pp->tx_pause = 1; + } + local_bh_enable(); +} - if (!fep->want_autoneg) - return -EINVAL; - spin_lock_irq(&fep->lock); - emac_start_link(fep, NULL); - spin_unlock_irq(&fep->lock); - return 0; +static u32 emac_ethtool_get_rx_csum(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + return dev->tah_dev != 0; } -static u32 emac_get_link(struct net_device *ndev) +static int emac_get_regs_len(struct ocp_enet_private *dev) { - return netif_carrier_ok(ndev); + return sizeof(struct emac_ethtool_regs_subhdr) + EMAC_ETHTOOL_REGS_SIZE; } -static struct ethtool_ops emac_ethtool_ops = { - .get_settings = emac_get_settings, - .set_settings = emac_set_settings, - .get_drvinfo = emac_get_drvinfo, - .nway_reset = emac_nway_reset, - .get_link = emac_get_link -}; +static int emac_ethtool_get_regs_len(struct net_device *ndev) +{ + struct ocp_enet_private *dev = ndev->priv; + return sizeof(struct emac_ethtool_regs_hdr) + + emac_get_regs_len(dev) + mal_get_regs_len(dev->mal) + + zmii_get_regs_len(dev->zmii_dev) + + rgmii_get_regs_len(dev->rgmii_dev) + + tah_get_regs_len(dev->tah_dev); +} -static int emac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +static void *emac_dump_regs(struct ocp_enet_private *dev, void *buf) { - struct ocp_enet_private *fep = dev->priv; - uint16_t *data = (uint16_t *) & rq->ifr_ifru; + struct emac_ethtool_regs_subhdr *hdr = buf; - switch (cmd) { - case SIOCGMIIPHY: - data[0] = fep->mii_phy_addr; - /* Fall through */ - case SIOCGMIIREG: - data[3] = emac_phy_read(dev, fep->mii_phy_addr, data[1]); - return 0; - case SIOCSMIIREG: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; + hdr->version = EMAC_ETHTOOL_REGS_VER; + hdr->index = dev->def->index; + memcpy_fromio(hdr + 1, dev->emacp, EMAC_ETHTOOL_REGS_SIZE); + return ((void *)(hdr + 1) + EMAC_ETHTOOL_REGS_SIZE); +} - emac_phy_write(dev, fep->mii_phy_addr, data[1], data[2]); - return 0; - default: - return -EOPNOTSUPP; +static void emac_ethtool_get_regs(struct net_device *ndev, + struct ethtool_regs *regs, void *buf) +{ + struct ocp_enet_private *dev = ndev->priv; + struct emac_ethtool_regs_hdr *hdr = buf; + + hdr->components = 0; + buf = hdr + 1; + + local_irq_disable(); + buf = mal_dump_regs(dev->mal, buf); + buf = emac_dump_regs(dev, buf); + if (dev->zmii_dev) { + hdr->components |= EMAC_ETHTOOL_REGS_ZMII; + buf = zmii_dump_regs(dev->zmii_dev, buf); } + if (dev->rgmii_dev) { + hdr->components |= EMAC_ETHTOOL_REGS_RGMII; + buf = rgmii_dump_regs(dev->rgmii_dev, buf); + } + if (dev->tah_dev) { + hdr->components |= EMAC_ETHTOOL_REGS_TAH; + buf = tah_dump_regs(dev->tah_dev, buf); + } + local_irq_enable(); } -static int emac_open(struct net_device *dev) +static int emac_ethtool_nway_reset(struct net_device *ndev) { - struct ocp_enet_private *fep = dev->priv; - int rc; + struct ocp_enet_private *dev = ndev->priv; + int res = 0; - spin_lock_irq(&fep->lock); + DBG("%d: nway_reset" NL, dev->def->index); - fep->opened = 1; - netif_carrier_off(dev); + if (dev->phy.address < 0) + return -EOPNOTSUPP; - /* Reset & configure the chip */ - emac_reset_configure(fep); + local_bh_disable(); + if (!dev->phy.autoneg) { + res = -EINVAL; + goto out; + } - spin_unlock_irq(&fep->lock); + dev->phy.def->ops->setup_aneg(&dev->phy, dev->phy.advertising); + emac_force_link_update(dev); - /* Request our interrupt lines */ - rc = request_irq(dev->irq, emac_mac_irq, 0, "IBM EMAC MAC", dev); - if (rc != 0) { - printk("dev->irq %d failed\n", dev->irq); - goto bail; - } - /* Kick the chip rx & tx channels into life */ - spin_lock_irq(&fep->lock); - emac_kick(fep); - spin_unlock_irq(&fep->lock); + out: + local_bh_enable(); + return res; +} - netif_start_queue(dev); - bail: - return rc; +static int emac_ethtool_get_stats_count(struct net_device *ndev) +{ + return EMAC_ETHTOOL_STATS_COUNT; } -static int emac_close(struct net_device *dev) +static void emac_ethtool_get_strings(struct net_device *ndev, u32 stringset, + u8 * buf) { - struct ocp_enet_private *fep = dev->priv; - emac_t *emacp = fep->emacp; + if (stringset == ETH_SS_STATS) + memcpy(buf, &emac_stats_keys, sizeof(emac_stats_keys)); +} - /* XXX Stop IRQ emitting here */ - spin_lock_irq(&fep->lock); - fep->opened = 0; - mal_disable_tx_channels(fep->mal, fep->commac.tx_chan_mask); - mal_disable_rx_channels(fep->mal, fep->commac.rx_chan_mask); - netif_carrier_off(dev); - netif_stop_queue(dev); +static void emac_ethtool_get_ethtool_stats(struct net_device *ndev, + struct ethtool_stats *estats, + u64 * tmp_stats) +{ + struct ocp_enet_private *dev = ndev->priv; + local_irq_disable(); + memcpy(tmp_stats, &dev->stats, sizeof(dev->stats)); + tmp_stats += sizeof(dev->stats) / sizeof(u64); + memcpy(tmp_stats, &dev->estats, sizeof(dev->estats)); + local_irq_enable(); +} - /* - * Check for a link, some PHYs don't provide a clock if - * no link is present. Some EMACs will not come out of - * soft reset without a PHY clock present. - */ - if (fep->phy_mii.def->ops->poll_link(&fep->phy_mii)) { - out_be32(&emacp->em0mr0, EMAC_M0_SRST); - udelay(10); +static void emac_ethtool_get_drvinfo(struct net_device *ndev, + struct ethtool_drvinfo *info) +{ + struct ocp_enet_private *dev = ndev->priv; - if (emacp->em0mr0 & EMAC_M0_SRST) { - /*not sure what to do here hopefully it clears before another open */ - printk(KERN_ERR - "%s: Phy SoftReset didn't clear, no link?\n", - dev->name); - } - } + strcpy(info->driver, "ibm_emac"); + strcpy(info->version, DRV_VERSION); + info->fw_version[0] = '\0'; + sprintf(info->bus_info, "PPC 4xx EMAC %d", dev->def->index); + info->n_stats = emac_ethtool_get_stats_count(ndev); + info->regdump_len = emac_ethtool_get_regs_len(ndev); +} - /* Free the irq's */ - free_irq(dev->irq, dev); +static struct ethtool_ops emac_ethtool_ops = { + .get_settings = emac_ethtool_get_settings, + .set_settings = emac_ethtool_set_settings, + .get_drvinfo = emac_ethtool_get_drvinfo, - spin_unlock_irq(&fep->lock); + .get_regs_len = emac_ethtool_get_regs_len, + .get_regs = emac_ethtool_get_regs, - return 0; -} + .nway_reset = emac_ethtool_nway_reset, -static void emac_remove(struct ocp_device *ocpdev) -{ - struct net_device *dev = ocp_get_drvdata(ocpdev); - struct ocp_enet_private *ep = dev->priv; - - /* FIXME: locking, races, ... */ - ep->going_away = 1; - ocp_set_drvdata(ocpdev, NULL); - if (ep->rgmii_dev) - emac_close_rgmii(ep->rgmii_dev); - if (ep->zmii_dev) - emac_close_zmii(ep->zmii_dev); - - unregister_netdev(dev); - del_timer_sync(&ep->link_timer); - mal_unregister_commac(ep->mal, &ep->commac); - iounmap((void *)ep->emacp); - kfree(dev); -} - -struct mal_commac_ops emac_commac_ops = { - .txeob = &emac_txeob_dev, - .txde = &emac_txde_dev, - .rxeob = &emac_rxeob_dev, - .rxde = &emac_rxde_dev, + .get_ringparam = emac_ethtool_get_ringparam, + .get_pauseparam = emac_ethtool_get_pauseparam, + + .get_rx_csum = emac_ethtool_get_rx_csum, + + .get_strings = emac_ethtool_get_strings, + .get_stats_count = emac_ethtool_get_stats_count, + .get_ethtool_stats = emac_ethtool_get_ethtool_stats, + + .get_link = ethtool_op_get_link, + .get_tx_csum = ethtool_op_get_tx_csum, + .get_sg = ethtool_op_get_sg, }; -#ifdef CONFIG_NET_POLL_CONTROLLER -static void emac_netpoll(struct net_device *ndev) +static int emac_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) { - emac_rxeob_dev((void *)ndev, 0); - emac_txeob_dev((void *)ndev, 0); + struct ocp_enet_private *dev = ndev->priv; + uint16_t *data = (uint16_t *) & rq->ifr_ifru; + + DBG("%d: ioctl %08x" NL, dev->def->index, cmd); + + if (dev->phy.address < 0) + return -EOPNOTSUPP; + + switch (cmd) { + case SIOCGMIIPHY: + case SIOCDEVPRIVATE: + data[0] = dev->phy.address; + /* Fall through */ + case SIOCGMIIREG: + case SIOCDEVPRIVATE + 1: + data[3] = emac_mdio_read(ndev, dev->phy.address, data[1]); + return 0; + + case SIOCSMIIREG: + case SIOCDEVPRIVATE + 2: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + emac_mdio_write(ndev, dev->phy.address, data[1], data[2]); + return 0; + default: + return -EOPNOTSUPP; + } } -#endif -static int emac_init_device(struct ocp_device *ocpdev, struct ibm_ocp_mal *mal) +static int __init emac_probe(struct ocp_device *ocpdev) { - int deferred_init = 0; - int rc = 0, i; + struct ocp_func_emac_data *emacdata = ocpdev->def->additions; struct net_device *ndev; - struct ocp_enet_private *ep; - struct ocp_func_emac_data *emacdata; - int commac_reg = 0; - u32 phy_map; + struct ocp_device *maldev; + struct ocp_enet_private *dev; + int err, i; + + DBG("%d: probe" NL, ocpdev->def->index); - emacdata = (struct ocp_func_emac_data *)ocpdev->def->additions; if (!emacdata) { printk(KERN_ERR "emac%d: Missing additional data!\n", ocpdev->def->index); @@ -1738,304 +1936,312 @@ static int emac_init_device(struct ocp_device *ocpdev, struct ibm_ocp_mal *mal) /* Allocate our net_device structure */ ndev = alloc_etherdev(sizeof(struct ocp_enet_private)); - if (ndev == NULL) { - printk(KERN_ERR - "emac%d: Could not allocate ethernet device.\n", + if (!ndev) { + printk(KERN_ERR "emac%d: could not allocate ethernet device!\n", ocpdev->def->index); return -ENOMEM; } - ep = ndev->priv; - ep->ndev = ndev; - ep->ocpdev = ocpdev; - ndev->irq = ocpdev->def->irq; - ep->wol_irq = emacdata->wol_irq; - if (emacdata->mdio_idx >= 0) { - if (emacdata->mdio_idx == ocpdev->def->index) { - /* Set the common MDIO net_device */ - mdio_ndev = ndev; - deferred_init = 1; - } - ep->mdio_dev = mdio_ndev; - } else { - ep->mdio_dev = ndev; - } + dev = ndev->priv; + dev->ndev = ndev; + dev->ldev = &ocpdev->dev; + dev->def = ocpdev->def; + SET_MODULE_OWNER(ndev); - ocp_set_drvdata(ocpdev, ndev); - - spin_lock_init(&ep->lock); - - /* Fill out MAL informations and register commac */ - ep->mal = mal; - ep->mal_tx_chan = emacdata->mal_tx_chan; - ep->mal_rx_chan = emacdata->mal_rx_chan; - ep->commac.ops = &emac_commac_ops; - ep->commac.dev = ndev; - ep->commac.tx_chan_mask = MAL_CHAN_MASK(ep->mal_tx_chan); - ep->commac.rx_chan_mask = MAL_CHAN_MASK(ep->mal_rx_chan); - rc = mal_register_commac(ep->mal, &ep->commac); - if (rc != 0) - goto bail; - commac_reg = 1; - - /* Map our MMIOs */ - ep->emacp = (emac_t *) ioremap(ocpdev->def->paddr, sizeof(emac_t)); - - /* Check if we need to attach to a ZMII */ - if (emacdata->zmii_idx >= 0) { - ep->zmii_input = emacdata->zmii_mux; - ep->zmii_dev = - ocp_find_device(OCP_ANY_ID, OCP_FUNC_ZMII, - emacdata->zmii_idx); - if (ep->zmii_dev == NULL) - printk(KERN_WARNING - "emac%d: ZMII %d requested but not found !\n", - ocpdev->def->index, emacdata->zmii_idx); - else if ((rc = - emac_init_zmii(ep->zmii_dev, ep->zmii_input, - emacdata->phy_mode)) != 0) - goto bail; + /* Find MAL device we are connected to */ + maldev = + ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_MAL, emacdata->mal_idx); + if (!maldev) { + printk(KERN_ERR "emac%d: unknown mal%d device!\n", + dev->def->index, emacdata->mal_idx); + err = -ENODEV; + goto out; + } + dev->mal = ocp_get_drvdata(maldev); + if (!dev->mal) { + printk(KERN_ERR "emac%d: mal%d hasn't been initialized yet!\n", + dev->def->index, emacdata->mal_idx); + err = -ENODEV; + goto out; } - /* Check if we need to attach to a RGMII */ - if (emacdata->rgmii_idx >= 0) { - ep->rgmii_input = emacdata->rgmii_mux; - ep->rgmii_dev = - ocp_find_device(OCP_ANY_ID, OCP_FUNC_RGMII, - emacdata->rgmii_idx); - if (ep->rgmii_dev == NULL) - printk(KERN_WARNING - "emac%d: RGMII %d requested but not found !\n", - ocpdev->def->index, emacdata->rgmii_idx); - else if ((rc = - emac_init_rgmii(ep->rgmii_dev, ep->rgmii_input, - emacdata->phy_mode)) != 0) - goto bail; + /* Register with MAL */ + dev->commac.ops = &emac_commac_ops; + dev->commac.dev = dev; + dev->commac.tx_chan_mask = MAL_CHAN_MASK(emacdata->mal_tx_chan); + dev->commac.rx_chan_mask = MAL_CHAN_MASK(emacdata->mal_rx_chan); + err = mal_register_commac(dev->mal, &dev->commac); + if (err) { + printk(KERN_ERR "emac%d: failed to register with mal%d!\n", + dev->def->index, emacdata->mal_idx); + goto out; + } + dev->rx_skb_size = emac_rx_skb_size(ndev->mtu); + dev->rx_sync_size = emac_rx_sync_size(ndev->mtu); + + /* Get pointers to BD rings */ + dev->tx_desc = + dev->mal->bd_virt + mal_tx_bd_offset(dev->mal, + emacdata->mal_tx_chan); + dev->rx_desc = + dev->mal->bd_virt + mal_rx_bd_offset(dev->mal, + emacdata->mal_rx_chan); + + DBG("%d: tx_desc %p" NL, ocpdev->def->index, dev->tx_desc); + DBG("%d: rx_desc %p" NL, ocpdev->def->index, dev->rx_desc); + + /* Clean rings */ + memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor)); + memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor)); + + /* If we depend on another EMAC for MDIO, check whether it was probed already */ + if (emacdata->mdio_idx >= 0 && emacdata->mdio_idx != ocpdev->def->index) { + struct ocp_device *mdiodev = + ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, + emacdata->mdio_idx); + if (!mdiodev) { + printk(KERN_ERR "emac%d: unknown emac%d device!\n", + dev->def->index, emacdata->mdio_idx); + err = -ENODEV; + goto out2; + } + dev->mdio_dev = ocp_get_drvdata(mdiodev); + if (!dev->mdio_dev) { + printk(KERN_ERR + "emac%d: emac%d hasn't been initialized yet!\n", + dev->def->index, emacdata->mdio_idx); + err = -ENODEV; + goto out2; + } } - /* Check if we need to attach to a TAH */ - if (emacdata->tah_idx >= 0) { - ep->tah_dev = - ocp_find_device(OCP_ANY_ID, OCP_FUNC_TAH, - emacdata->tah_idx); - if (ep->tah_dev == NULL) - printk(KERN_WARNING - "emac%d: TAH %d requested but not found !\n", - ocpdev->def->index, emacdata->tah_idx); - else if ((rc = emac_init_tah(ep)) != 0) - goto bail; + /* Attach to ZMII, if needed */ + if ((err = zmii_attach(dev)) != 0) + goto out2; + + /* Attach to RGMII, if needed */ + if ((err = rgmii_attach(dev)) != 0) + goto out3; + + /* Attach to TAH, if needed */ + if ((err = tah_attach(dev)) != 0) + goto out4; + + /* Map EMAC regs */ + dev->emacp = + (struct emac_regs *)ioremap(dev->def->paddr, + sizeof(struct emac_regs)); + if (!dev->emacp) { + printk(KERN_ERR "emac%d: could not ioremap device registers!\n", + dev->def->index); + err = -ENOMEM; + goto out5; } - if (deferred_init) { - if (!list_empty(&emac_init_list)) { - struct list_head *entry; - struct emac_def_dev *ddev; + /* Fill in MAC address */ + for (i = 0; i < 6; ++i) + ndev->dev_addr[i] = emacdata->mac_addr[i]; - list_for_each(entry, &emac_init_list) { - ddev = - list_entry(entry, struct emac_def_dev, - link); - emac_init_device(ddev->ocpdev, ddev->mal); - } + /* Set some link defaults before we can find out real parameters */ + dev->phy.speed = SPEED_100; + dev->phy.duplex = DUPLEX_FULL; + dev->phy.autoneg = AUTONEG_DISABLE; + dev->phy.pause = dev->phy.asym_pause = 0; + init_timer(&dev->link_timer); + dev->link_timer.function = emac_link_timer; + dev->link_timer.data = (unsigned long)dev; + + /* Find PHY if any */ + dev->phy.dev = ndev; + dev->phy.mode = emacdata->phy_mode; + if (emacdata->phy_map != 0xffffffff) { + u32 phy_map = emacdata->phy_map | busy_phy_map; + u32 adv; + + DBG("%d: PHY maps %08x %08x" NL, dev->def->index, + emacdata->phy_map, busy_phy_map); + + EMAC_RX_CLK_TX(dev->def->index); + + dev->phy.mdio_read = emac_mdio_read; + dev->phy.mdio_write = emac_mdio_write; + + /* Configure EMAC with defaults so we can at least use MDIO + * This is needed mostly for 440GX + */ + if (emac_phy_gpcs(dev->phy.mode)) { + /* XXX + * Make GPCS PHY address equal to EMAC index. + * We probably should take into account busy_phy_map + * and/or phy_map here. + */ + dev->phy.address = dev->def->index; } - } + + emac_configure(dev); - /* Init link monitoring timer */ - init_timer(&ep->link_timer); - ep->link_timer.function = emac_link_timer; - ep->link_timer.data = (unsigned long)ep; - ep->timer_ticks = 0; - - /* Fill up the mii_phy structure */ - ep->phy_mii.dev = ndev; - ep->phy_mii.mdio_read = emac_phy_read; - ep->phy_mii.mdio_write = emac_phy_write; - ep->phy_mii.mode = emacdata->phy_mode; - - /* Find PHY */ - phy_map = emacdata->phy_map | busy_phy_map; - for (i = 0; i <= 0x1f; i++, phy_map >>= 1) { - if ((phy_map & 0x1) == 0) { - int val = emac_phy_read(ndev, i, MII_BMCR); - if (val != 0xffff && val != -1) - break; + for (i = 0; i < 0x20; phy_map >>= 1, ++i) + if (!(phy_map & 1)) { + int r; + busy_phy_map |= 1 << i; + + /* Quick check if there is a PHY at the address */ + r = emac_mdio_read(dev->ndev, i, MII_BMCR); + if (r == 0xffff || r < 0) + continue; + if (!mii_phy_probe(&dev->phy, i)) + break; + } + if (i == 0x20) { + printk(KERN_WARNING "emac%d: can't find PHY!\n", + dev->def->index); + goto out6; } - } - if (i == 0x20) { - printk(KERN_WARNING "emac%d: Can't find PHY.\n", - ocpdev->def->index); - rc = -ENODEV; - goto bail; - } - busy_phy_map |= 1 << i; - ep->mii_phy_addr = i; - rc = mii_phy_probe(&ep->phy_mii, i); - if (rc) { - printk(KERN_WARNING "emac%d: Failed to probe PHY type.\n", - ocpdev->def->index); - rc = -ENODEV; - goto bail; - } - - /* Disable any PHY features not supported by the platform */ - ep->phy_mii.def->features &= ~emacdata->phy_feat_exc; - /* Setup initial PHY config & startup aneg */ - if (ep->phy_mii.def->ops->init) - ep->phy_mii.def->ops->init(&ep->phy_mii); - netif_carrier_off(ndev); - if (ep->phy_mii.def->features & SUPPORTED_Autoneg) - ep->want_autoneg = 1; - else { - ep->want_autoneg = 0; + /* Init PHY */ + if (dev->phy.def->ops->init) + dev->phy.def->ops->init(&dev->phy); - /* Select highest supported speed/duplex */ - if (ep->phy_mii.def->features & SUPPORTED_1000baseT_Full) { - ep->phy_mii.speed = SPEED_1000; - ep->phy_mii.duplex = DUPLEX_FULL; - } else if (ep->phy_mii.def->features & - SUPPORTED_1000baseT_Half) { - ep->phy_mii.speed = SPEED_1000; - ep->phy_mii.duplex = DUPLEX_HALF; - } else if (ep->phy_mii.def->features & - SUPPORTED_100baseT_Full) { - ep->phy_mii.speed = SPEED_100; - ep->phy_mii.duplex = DUPLEX_FULL; - } else if (ep->phy_mii.def->features & - SUPPORTED_100baseT_Half) { - ep->phy_mii.speed = SPEED_100; - ep->phy_mii.duplex = DUPLEX_HALF; - } else if (ep->phy_mii.def->features & - SUPPORTED_10baseT_Full) { - ep->phy_mii.speed = SPEED_10; - ep->phy_mii.duplex = DUPLEX_FULL; + /* Disable any PHY features not supported by the platform */ + dev->phy.def->features &= ~emacdata->phy_feat_exc; + + /* Setup initial link parameters */ + if (dev->phy.features & SUPPORTED_Autoneg) { + adv = dev->phy.features; +#if !defined(CONFIG_40x) + adv |= ADVERTISED_Pause | ADVERTISED_Asym_Pause; +#endif + /* Restart autonegotiation */ + dev->phy.def->ops->setup_aneg(&dev->phy, adv); } else { - ep->phy_mii.speed = SPEED_10; - ep->phy_mii.duplex = DUPLEX_HALF; + u32 f = dev->phy.def->features; + int speed = SPEED_10, fd = DUPLEX_HALF; + + /* Select highest supported speed/duplex */ + if (f & SUPPORTED_1000baseT_Full) { + speed = SPEED_1000; + fd = DUPLEX_FULL; + } else if (f & SUPPORTED_1000baseT_Half) + speed = SPEED_1000; + else if (f & SUPPORTED_100baseT_Full) { + speed = SPEED_100; + fd = DUPLEX_FULL; + } else if (f & SUPPORTED_100baseT_Half) + speed = SPEED_100; + else if (f & SUPPORTED_10baseT_Full) + fd = DUPLEX_FULL; + + /* Force link parameters */ + dev->phy.def->ops->setup_forced(&dev->phy, speed, fd); } - } - emac_start_link(ep, NULL); + } else { + emac_reset(dev); - /* read the MAC Address */ - for (i = 0; i < 6; i++) - ndev->dev_addr[i] = emacdata->mac_addr[i]; + /* PHY-less configuration. + * XXX I probably should move these settings to emacdata + */ + dev->phy.address = -1; + dev->phy.features = SUPPORTED_100baseT_Full | SUPPORTED_MII; + dev->phy.pause = 1; + } /* Fill in the driver function table */ ndev->open = &emac_open; - ndev->hard_start_xmit = &emac_start_xmit; + if (dev->tah_dev) { + ndev->hard_start_xmit = &emac_start_xmit_sg; + ndev->features |= NETIF_F_IP_CSUM | NETIF_F_SG; + } else + ndev->hard_start_xmit = &emac_start_xmit; + ndev->tx_timeout = &emac_full_tx_reset; + ndev->watchdog_timeo = 5 * HZ; ndev->stop = &emac_close; ndev->get_stats = &emac_stats; - if (emacdata->jumbo) - ndev->change_mtu = &emac_change_mtu; - ndev->set_mac_address = &emac_set_mac_address; ndev->set_multicast_list = &emac_set_multicast_list; ndev->do_ioctl = &emac_ioctl; + if (emac_phy_supports_gige(emacdata->phy_mode)) { + ndev->change_mtu = &emac_change_mtu; + dev->commac.ops = &emac_commac_sg_ops; + } SET_ETHTOOL_OPS(ndev, &emac_ethtool_ops); - if (emacdata->tah_idx >= 0) - ndev->features = NETIF_F_IP_CSUM | NETIF_F_SG; -#ifdef CONFIG_NET_POLL_CONTROLLER - ndev->poll_controller = emac_netpoll; -#endif - SET_MODULE_OWNER(ndev); + netif_carrier_off(ndev); + netif_stop_queue(ndev); + + err = register_netdev(ndev); + if (err) { + printk(KERN_ERR "emac%d: failed to register net device (%d)!\n", + dev->def->index, err); + goto out6; + } - rc = register_netdev(ndev); - if (rc != 0) - goto bail; + ocp_set_drvdata(ocpdev, dev); - printk("%s: IBM emac, MAC %02x:%02x:%02x:%02x:%02x:%02x\n", - ndev->name, + printk("%s: emac%d, MAC %02x:%02x:%02x:%02x:%02x:%02x\n", + ndev->name, dev->def->index, ndev->dev_addr[0], ndev->dev_addr[1], ndev->dev_addr[2], ndev->dev_addr[3], ndev->dev_addr[4], ndev->dev_addr[5]); - printk(KERN_INFO "%s: Found %s PHY (0x%02x)\n", - ndev->name, ep->phy_mii.def->name, ep->mii_phy_addr); - bail: - if (rc && commac_reg) - mal_unregister_commac(ep->mal, &ep->commac); - if (rc && ndev) - kfree(ndev); + if (dev->phy.address >= 0) + printk("%s: found %s PHY (0x%02x)\n", ndev->name, + dev->phy.def->name, dev->phy.address); - return rc; -} - -static int emac_probe(struct ocp_device *ocpdev) -{ - struct ocp_device *maldev; - struct ibm_ocp_mal *mal; - struct ocp_func_emac_data *emacdata; - - emacdata = (struct ocp_func_emac_data *)ocpdev->def->additions; - if (emacdata == NULL) { - printk(KERN_ERR "emac%d: Missing additional datas !\n", - ocpdev->def->index); - return -ENODEV; - } - - /* Get the MAL device */ - maldev = ocp_find_device(OCP_ANY_ID, OCP_FUNC_MAL, emacdata->mal_idx); - if (maldev == NULL) { - printk("No maldev\n"); - return -ENODEV; - } - /* - * Get MAL driver data, it must be here due to link order. - * When the driver is modularized, symbol dependencies will - * ensure the MAL driver is already present if built as a - * module. - */ - mal = (struct ibm_ocp_mal *)ocp_get_drvdata(maldev); - if (mal == NULL) { - printk("No maldrv\n"); - return -ENODEV; - } - - /* If we depend on another EMAC for MDIO, wait for it to show up */ - if (emacdata->mdio_idx >= 0 && - (emacdata->mdio_idx != ocpdev->def->index) && !mdio_ndev) { - struct emac_def_dev *ddev; - /* Add this index to the deferred init table */ - ddev = kmalloc(sizeof(struct emac_def_dev), GFP_KERNEL); - ddev->ocpdev = ocpdev; - ddev->mal = mal; - list_add_tail(&ddev->link, &emac_init_list); - } else { - emac_init_device(ocpdev, mal); - } + emac_dbg_register(dev->def->index, dev); return 0; + out6: + iounmap((void *)dev->emacp); + out5: + tah_fini(dev->tah_dev); + out4: + rgmii_fini(dev->rgmii_dev, dev->rgmii_input); + out3: + zmii_fini(dev->zmii_dev, dev->zmii_input); + out2: + mal_unregister_commac(dev->mal, &dev->commac); + out: + kfree(ndev); + return err; } -/* Structure for a device driver */ static struct ocp_device_id emac_ids[] = { - {.vendor = OCP_ANY_ID,.function = OCP_FUNC_EMAC}, - {.vendor = OCP_VENDOR_INVALID} + { .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_EMAC }, + { .vendor = OCP_VENDOR_INVALID} }; static struct ocp_driver emac_driver = { .name = "emac", .id_table = emac_ids, - .probe = emac_probe, .remove = emac_remove, }; static int __init emac_init(void) { - printk(KERN_INFO DRV_NAME ": " DRV_DESC ", version " DRV_VERSION "\n"); - printk(KERN_INFO "Maintained by " DRV_AUTHOR "\n"); + printk(KERN_INFO DRV_DESC ", version " DRV_VERSION "\n"); + + DBG(": init" NL); - if (skb_res > 2) { - printk(KERN_WARNING "Invalid skb_res: %d, cropping to 2\n", - skb_res); - skb_res = 2; + if (mal_init()) + return -ENODEV; + + EMAC_CLK_INTERNAL; + if (ocp_register_driver(&emac_driver)) { + EMAC_CLK_EXTERNAL; + ocp_unregister_driver(&emac_driver); + mal_exit(); + return -ENODEV; } + EMAC_CLK_EXTERNAL; - return ocp_register_driver(&emac_driver); + emac_init_debug(); + return 0; } static void __exit emac_exit(void) { + DBG(": exit" NL); ocp_unregister_driver(&emac_driver); + mal_exit(); + emac_fini_debug(); } module_init(emac_init); diff --git a/drivers/net/ibm_emac/ibm_emac_core.h b/drivers/net/ibm_emac/ibm_emac_core.h index 97e6e1e..e9b44d0 100644 --- a/drivers/net/ibm_emac/ibm_emac_core.h +++ b/drivers/net/ibm_emac/ibm_emac_core.h @@ -1,146 +1,221 @@ /* - * ibm_emac_core.h + * drivers/net/ibm_emac/ibm_emac_core.h * - * Ethernet driver for the built in ethernet on the IBM 405 PowerPC - * processor. + * Driver for PowerPC 4xx on-chip ethernet controller. * - * Armin Kuster akuster@mvista.com - * Sept, 2001 + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * - * Orignial driver - * Johnnie Peters - * jpeters@mvista.com - * - * Copyright 2000 MontaVista Softare Inc. + * Based on original work by + * Armin Kuster <akuster@mvista.com> + * Johnnie Peters <jpeters@mvista.com> + * Copyright 2000, 2001 MontaVista Softare Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. + * */ +#ifndef __IBM_EMAC_CORE_H_ +#define __IBM_EMAC_CORE_H_ -#ifndef _IBM_EMAC_CORE_H_ -#define _IBM_EMAC_CORE_H_ - +#include <linux/config.h> #include <linux/netdevice.h> +#include <linux/dma-mapping.h> #include <asm/ocp.h> -#include <asm/mmu.h> /* For phys_addr_t */ #include "ibm_emac.h" #include "ibm_emac_phy.h" -#include "ibm_emac_rgmii.h" #include "ibm_emac_zmii.h" +#include "ibm_emac_rgmii.h" #include "ibm_emac_mal.h" #include "ibm_emac_tah.h" -#ifndef CONFIG_IBM_EMAC_TXB -#define NUM_TX_BUFF 64 -#define NUM_RX_BUFF 64 -#else -#define NUM_TX_BUFF CONFIG_IBM_EMAC_TXB -#define NUM_RX_BUFF CONFIG_IBM_EMAC_RXB -#endif +#define NUM_TX_BUFF CONFIG_IBM_EMAC_TXB +#define NUM_RX_BUFF CONFIG_IBM_EMAC_RXB -/* This does 16 byte alignment, exactly what we need. - * The packet length includes FCS, but we don't want to - * include that when passing upstream as it messes up - * bridging applications. - */ -#ifndef CONFIG_IBM_EMAC_SKBRES -#define SKB_RES 2 -#else -#define SKB_RES CONFIG_IBM_EMAC_SKBRES +/* Simple sanity check */ +#if NUM_TX_BUFF > 256 || NUM_RX_BUFF > 256 +#error Invalid number of buffer descriptors (greater than 256) #endif -/* Note about alignement. alloc_skb() returns a cache line - * aligned buffer. However, dev_alloc_skb() will add 16 more - * bytes and "reserve" them, so our buffer will actually end - * on a half cache line. What we do is to use directly - * alloc_skb, allocate 16 more bytes to match the total amount - * allocated by dev_alloc_skb(), but we don't reserve. +// XXX +#define EMAC_MIN_MTU 46 +#define EMAC_MAX_MTU 9000 + +/* Maximum L2 header length (VLAN tagged, no FCS) */ +#define EMAC_MTU_OVERHEAD (6 * 2 + 2 + 4) + +/* RX BD size for the given MTU */ +static inline int emac_rx_size(int mtu) +{ + if (mtu > ETH_DATA_LEN) + return MAL_MAX_RX_SIZE; + else + return mal_rx_size(ETH_DATA_LEN + EMAC_MTU_OVERHEAD); +} + +#define EMAC_DMA_ALIGN(x) ALIGN((x), dma_get_cache_alignment()) + +#define EMAC_RX_SKB_HEADROOM \ + EMAC_DMA_ALIGN(CONFIG_IBM_EMAC_RX_SKB_HEADROOM) + +/* Size of RX skb for the given MTU */ +static inline int emac_rx_skb_size(int mtu) +{ + int size = max(mtu + EMAC_MTU_OVERHEAD, emac_rx_size(mtu)); + return EMAC_DMA_ALIGN(size + 2) + EMAC_RX_SKB_HEADROOM; +} + +/* RX DMA sync size */ +static inline int emac_rx_sync_size(int mtu) +{ + return EMAC_DMA_ALIGN(emac_rx_size(mtu) + 2); +} + +/* Driver statistcs is split into two parts to make it more cache friendly: + * - normal statistics (packet count, etc) + * - error statistics + * + * When statistics is requested by ethtool, these parts are concatenated, + * normal one goes first. + * + * Please, keep these structures in sync with emac_stats_keys. */ -#define MAX_NUM_BUF_DESC 255 -#define DESC_BUF_SIZE 4080 /* max 4096-16 */ -#define DESC_BUF_SIZE_REG (DESC_BUF_SIZE / 16) - -/* Transmitter timeout. */ -#define TX_TIMEOUT (2*HZ) - -/* MDIO latency delay */ -#define MDIO_DELAY 250 - -/* Power managment shift registers */ -#define IBM_CPM_EMMII 0 /* Shift value for MII */ -#define IBM_CPM_EMRX 1 /* Shift value for recv */ -#define IBM_CPM_EMTX 2 /* Shift value for MAC */ -#define IBM_CPM_EMAC(x) (((x)>>IBM_CPM_EMMII) | ((x)>>IBM_CPM_EMRX) | ((x)>>IBM_CPM_EMTX)) - -#define ENET_HEADER_SIZE 14 -#define ENET_FCS_SIZE 4 -#define ENET_DEF_MTU_SIZE 1500 -#define ENET_DEF_BUF_SIZE (ENET_DEF_MTU_SIZE + ENET_HEADER_SIZE + ENET_FCS_SIZE) -#define EMAC_MIN_FRAME 64 -#define EMAC_MAX_FRAME 9018 -#define EMAC_MIN_MTU (EMAC_MIN_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE) -#define EMAC_MAX_MTU (EMAC_MAX_FRAME - ENET_HEADER_SIZE - ENET_FCS_SIZE) - -#ifdef CONFIG_IBM_EMAC_ERRMSG -void emac_serr_dump_0(struct net_device *dev); -void emac_serr_dump_1(struct net_device *dev); -void emac_err_dump(struct net_device *dev, int em0isr); -void emac_phy_dump(struct net_device *); -void emac_desc_dump(struct net_device *); -void emac_mac_dump(struct net_device *); -void emac_mal_dump(struct net_device *); -#else -#define emac_serr_dump_0(dev) do { } while (0) -#define emac_serr_dump_1(dev) do { } while (0) -#define emac_err_dump(dev,x) do { } while (0) -#define emac_phy_dump(dev) do { } while (0) -#define emac_desc_dump(dev) do { } while (0) -#define emac_mac_dump(dev) do { } while (0) -#define emac_mal_dump(dev) do { } while (0) -#endif + +/* Normal TX/RX Statistics */ +struct ibm_emac_stats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; + u64 rx_packets_csum; + u64 tx_packets_csum; +}; + +/* Error statistics */ +struct ibm_emac_error_stats { + u64 tx_undo; + + /* Software RX Errors */ + u64 rx_dropped_stack; + u64 rx_dropped_oom; + u64 rx_dropped_error; + u64 rx_dropped_resize; + u64 rx_dropped_mtu; + u64 rx_stopped; + /* BD reported RX errors */ + u64 rx_bd_errors; + u64 rx_bd_overrun; + u64 rx_bd_bad_packet; + u64 rx_bd_runt_packet; + u64 rx_bd_short_event; + u64 rx_bd_alignment_error; + u64 rx_bd_bad_fcs; + u64 rx_bd_packet_too_long; + u64 rx_bd_out_of_range; + u64 rx_bd_in_range; + /* EMAC IRQ reported RX errors */ + u64 rx_parity; + u64 rx_fifo_overrun; + u64 rx_overrun; + u64 rx_bad_packet; + u64 rx_runt_packet; + u64 rx_short_event; + u64 rx_alignment_error; + u64 rx_bad_fcs; + u64 rx_packet_too_long; + u64 rx_out_of_range; + u64 rx_in_range; + + /* Software TX Errors */ + u64 tx_dropped; + /* BD reported TX errors */ + u64 tx_bd_errors; + u64 tx_bd_bad_fcs; + u64 tx_bd_carrier_loss; + u64 tx_bd_excessive_deferral; + u64 tx_bd_excessive_collisions; + u64 tx_bd_late_collision; + u64 tx_bd_multple_collisions; + u64 tx_bd_single_collision; + u64 tx_bd_underrun; + u64 tx_bd_sqe; + /* EMAC IRQ reported TX errors */ + u64 tx_parity; + u64 tx_underrun; + u64 tx_sqe; + u64 tx_errors; +}; + +#define EMAC_ETHTOOL_STATS_COUNT ((sizeof(struct ibm_emac_stats) + \ + sizeof(struct ibm_emac_error_stats)) \ + / sizeof(u64)) struct ocp_enet_private { - struct sk_buff *tx_skb[NUM_TX_BUFF]; - struct sk_buff *rx_skb[NUM_RX_BUFF]; - struct mal_descriptor *tx_desc; - struct mal_descriptor *rx_desc; - struct mal_descriptor *rx_dirty; - struct net_device_stats stats; - int tx_cnt; - int rx_slot; - int dirty_rx; - int tx_slot; - int ack_slot; - int rx_buffer_size; - - struct mii_phy phy_mii; - int mii_phy_addr; - int want_autoneg; - int timer_ticks; - struct timer_list link_timer; - struct net_device *mdio_dev; - - struct ocp_device *rgmii_dev; - int rgmii_input; - - struct ocp_device *zmii_dev; - int zmii_input; - - struct ibm_ocp_mal *mal; - int mal_tx_chan, mal_rx_chan; - struct mal_commac commac; - - struct ocp_device *tah_dev; - - int opened; - int going_away; - int wol_irq; - emac_t *emacp; - struct ocp_device *ocpdev; - struct net_device *ndev; - spinlock_t lock; + struct net_device *ndev; /* 0 */ + struct emac_regs *emacp; + + struct mal_descriptor *tx_desc; + int tx_cnt; + int tx_slot; + int ack_slot; + + struct mal_descriptor *rx_desc; + int rx_slot; + struct sk_buff *rx_sg_skb; /* 1 */ + int rx_skb_size; + int rx_sync_size; + + struct ibm_emac_stats stats; + struct ocp_device *tah_dev; + + struct ibm_ocp_mal *mal; + struct mal_commac commac; + + struct sk_buff *tx_skb[NUM_TX_BUFF]; + struct sk_buff *rx_skb[NUM_RX_BUFF]; + + struct ocp_device *zmii_dev; + int zmii_input; + struct ocp_enet_private *mdio_dev; + struct ocp_device *rgmii_dev; + int rgmii_input; + + struct ocp_def *def; + + struct mii_phy phy; + struct timer_list link_timer; + int reset_failed; + + struct ibm_emac_error_stats estats; + struct net_device_stats nstats; + + struct device* ldev; }; -#endif /* _IBM_EMAC_CORE_H_ */ + +/* Ethtool get_regs complex data. + * We want to get not just EMAC registers, but also MAL, ZMII, RGMII, TAH + * when available. + * + * Returned BLOB consists of the ibm_emac_ethtool_regs_hdr, + * MAL registers, EMAC registers and optional ZMII, RGMII, TAH registers. + * Each register component is preceded with emac_ethtool_regs_subhdr. + * Order of the optional headers follows their relative bit posititions + * in emac_ethtool_regs_hdr.components + */ +#define EMAC_ETHTOOL_REGS_ZMII 0x00000001 +#define EMAC_ETHTOOL_REGS_RGMII 0x00000002 +#define EMAC_ETHTOOL_REGS_TAH 0x00000004 + +struct emac_ethtool_regs_hdr { + u32 components; +}; + +struct emac_ethtool_regs_subhdr { + u32 version; + u32 index; +}; + +#endif /* __IBM_EMAC_CORE_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_debug.c b/drivers/net/ibm_emac/ibm_emac_debug.c index c851204..75d3b86 100644 --- a/drivers/net/ibm_emac/ibm_emac_debug.c +++ b/drivers/net/ibm_emac/ibm_emac_debug.c @@ -1,224 +1,213 @@ /* - * ibm_ocp_debug.c + * drivers/net/ibm_emac/ibm_emac_debug.c * - * This has all the debug routines that where in *_enet.c + * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines. * - * Armin Kuster akuster@mvista.com - * April , 2002 - * - * Copyright 2002 MontaVista Softare Inc. + * Copyright (c) 2004, 2005 Zultys Technologies + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. + * */ - #include <linux/config.h> +#include <linux/init.h> +#include <linux/module.h> #include <linux/kernel.h> #include <linux/netdevice.h> +#include <linux/sysrq.h> #include <asm/io.h> -#include "ibm_ocp_mal.h" -#include "ibm_ocp_zmii.h" -#include "ibm_ocp_enet.h" -extern int emac_phy_read(struct net_device *dev, int mii_id, int reg); +#include "ibm_emac_core.h" + +static void emac_desc_dump(int idx, struct ocp_enet_private *p) +{ + int i; + printk("** EMAC%d TX BDs **\n" + " tx_cnt = %d tx_slot = %d ack_slot = %d\n", + idx, p->tx_cnt, p->tx_slot, p->ack_slot); + for (i = 0; i < NUM_TX_BUFF / 2; ++i) + printk + ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", + i, p->tx_desc[i].data_ptr, p->tx_skb[i] ? 'V' : ' ', + p->tx_desc[i].ctrl, p->tx_desc[i].data_len, + NUM_TX_BUFF / 2 + i, + p->tx_desc[NUM_TX_BUFF / 2 + i].data_ptr, + p->tx_skb[NUM_TX_BUFF / 2 + i] ? 'V' : ' ', + p->tx_desc[NUM_TX_BUFF / 2 + i].ctrl, + p->tx_desc[NUM_TX_BUFF / 2 + i].data_len); + + printk("** EMAC%d RX BDs **\n" + " rx_slot = %d rx_stopped = %d rx_skb_size = %d rx_sync_size = %d\n" + " rx_sg_skb = 0x%p\n", + idx, p->rx_slot, p->commac.rx_stopped, p->rx_skb_size, + p->rx_sync_size, p->rx_sg_skb); + for (i = 0; i < NUM_RX_BUFF / 2; ++i) + printk + ("bd[%2d] 0x%08x %c 0x%04x %4u - bd[%2d] 0x%08x %c 0x%04x %4u\n", + i, p->rx_desc[i].data_ptr, p->rx_skb[i] ? 'V' : ' ', + p->rx_desc[i].ctrl, p->rx_desc[i].data_len, + NUM_RX_BUFF / 2 + i, + p->rx_desc[NUM_RX_BUFF / 2 + i].data_ptr, + p->rx_skb[NUM_RX_BUFF / 2 + i] ? 'V' : ' ', + p->rx_desc[NUM_RX_BUFF / 2 + i].ctrl, + p->rx_desc[NUM_RX_BUFF / 2 + i].data_len); +} + +static void emac_mac_dump(int idx, struct ocp_enet_private *dev) +{ + struct emac_regs *p = dev->emacp; + + printk("** EMAC%d registers **\n" + "MR0 = 0x%08x MR1 = 0x%08x TMR0 = 0x%08x TMR1 = 0x%08x\n" + "RMR = 0x%08x ISR = 0x%08x ISER = 0x%08x\n" + "IAR = %04x%08x VTPID = 0x%04x VTCI = 0x%04x\n" + "IAHT: 0x%04x 0x%04x 0x%04x 0x%04x " + "GAHT: 0x%04x 0x%04x 0x%04x 0x%04x\n" + "LSA = %04x%08x IPGVR = 0x%04x\n" + "STACR = 0x%08x TRTR = 0x%08x RWMR = 0x%08x\n" + "OCTX = 0x%08x OCRX = 0x%08x IPCR = 0x%08x\n", + idx, in_be32(&p->mr0), in_be32(&p->mr1), + in_be32(&p->tmr0), in_be32(&p->tmr1), + in_be32(&p->rmr), in_be32(&p->isr), in_be32(&p->iser), + in_be32(&p->iahr), in_be32(&p->ialr), in_be32(&p->vtpid), + in_be32(&p->vtci), + in_be32(&p->iaht1), in_be32(&p->iaht2), in_be32(&p->iaht3), + in_be32(&p->iaht4), + in_be32(&p->gaht1), in_be32(&p->gaht2), in_be32(&p->gaht3), + in_be32(&p->gaht4), + in_be32(&p->lsah), in_be32(&p->lsal), in_be32(&p->ipgvr), + in_be32(&p->stacr), in_be32(&p->trtr), in_be32(&p->rwmr), + in_be32(&p->octx), in_be32(&p->ocrx), in_be32(&p->ipcr) + ); + + emac_desc_dump(idx, dev); +} + +static void emac_mal_dump(struct ibm_ocp_mal *mal) +{ + struct ocp_func_mal_data *maldata = mal->def->additions; + int i; + + printk("** MAL%d Registers **\n" + "CFG = 0x%08x ESR = 0x%08x IER = 0x%08x\n" + "TX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n" + "RX|CASR = 0x%08x CARR = 0x%08x EOBISR = 0x%08x DEIR = 0x%08x\n", + mal->def->index, + get_mal_dcrn(mal, MAL_CFG), get_mal_dcrn(mal, MAL_ESR), + get_mal_dcrn(mal, MAL_IER), + get_mal_dcrn(mal, MAL_TXCASR), get_mal_dcrn(mal, MAL_TXCARR), + get_mal_dcrn(mal, MAL_TXEOBISR), get_mal_dcrn(mal, MAL_TXDEIR), + get_mal_dcrn(mal, MAL_RXCASR), get_mal_dcrn(mal, MAL_RXCARR), + get_mal_dcrn(mal, MAL_RXEOBISR), get_mal_dcrn(mal, MAL_RXDEIR) + ); + + printk("TX|"); + for (i = 0; i < maldata->num_tx_chans; ++i) { + if (i && !(i % 4)) + printk("\n "); + printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_TXCTPR(i))); + } + printk("\nRX|"); + for (i = 0; i < maldata->num_rx_chans; ++i) { + if (i && !(i % 4)) + printk("\n "); + printk("CTP%d = 0x%08x ", i, get_mal_dcrn(mal, MAL_RXCTPR(i))); + } + printk("\n "); + for (i = 0; i < maldata->num_rx_chans; ++i) { + u32 r = get_mal_dcrn(mal, MAL_RCBS(i)); + if (i && !(i % 3)) + printk("\n "); + printk("RCBS%d = 0x%08x (%d) ", i, r, r * 16); + } + printk("\n"); +} + +static struct ocp_enet_private *__emacs[4]; +static struct ibm_ocp_mal *__mals[1]; -void emac_phy_dump(struct net_device *dev) +void emac_dbg_register(int idx, struct ocp_enet_private *dev) { - struct ocp_enet_private *fep = dev->priv; - unsigned long i; - uint data; - - printk(KERN_DEBUG " Prepare for Phy dump....\n"); - for (i = 0; i < 0x1A; i++) { - data = emac_phy_read(dev, fep->mii_phy_addr, i); - printk(KERN_DEBUG "Phy reg 0x%lx ==> %4x\n", i, data); - if (i == 0x07) - i = 0x0f; + unsigned long flags; + + if (idx >= sizeof(__emacs) / sizeof(__emacs[0])) { + printk(KERN_WARNING + "invalid index %d when registering EMAC for debugging\n", + idx); + return; } + + local_irq_save(flags); + __emacs[idx] = dev; + local_irq_restore(flags); } -void emac_desc_dump(struct net_device *dev) +void mal_dbg_register(int idx, struct ibm_ocp_mal *mal) { - struct ocp_enet_private *fep = dev->priv; - int curr_slot; - - printk(KERN_DEBUG - "dumping the receive descriptors: current slot is %d\n", - fep->rx_slot); - for (curr_slot = 0; curr_slot < NUM_RX_BUFF; curr_slot++) { - printk(KERN_DEBUG - "Desc %02d: status 0x%04x, length %3d, addr 0x%x\n", - curr_slot, fep->rx_desc[curr_slot].ctrl, - fep->rx_desc[curr_slot].data_len, - (unsigned int)fep->rx_desc[curr_slot].data_ptr); + unsigned long flags; + + if (idx >= sizeof(__mals) / sizeof(__mals[0])) { + printk(KERN_WARNING + "invalid index %d when registering MAL for debugging\n", + idx); + return; } + + local_irq_save(flags); + __mals[idx] = mal; + local_irq_restore(flags); } -void emac_mac_dump(struct net_device *dev) +void emac_dbg_dump_all(void) { - struct ocp_enet_private *fep = dev->priv; - volatile emac_t *emacp = fep->emacp; - - printk(KERN_DEBUG "EMAC DEBUG ********** \n"); - printk(KERN_DEBUG "EMAC_M0 ==> 0x%x\n", in_be32(&emacp->em0mr0)); - printk(KERN_DEBUG "EMAC_M1 ==> 0x%x\n", in_be32(&emacp->em0mr1)); - printk(KERN_DEBUG "EMAC_TXM0==> 0x%x\n", in_be32(&emacp->em0tmr0)); - printk(KERN_DEBUG "EMAC_TXM1==> 0x%x\n", in_be32(&emacp->em0tmr1)); - printk(KERN_DEBUG "EMAC_RXM ==> 0x%x\n", in_be32(&emacp->em0rmr)); - printk(KERN_DEBUG "EMAC_ISR ==> 0x%x\n", in_be32(&emacp->em0isr)); - printk(KERN_DEBUG "EMAC_IER ==> 0x%x\n", in_be32(&emacp->em0iser)); - printk(KERN_DEBUG "EMAC_IAH ==> 0x%x\n", in_be32(&emacp->em0iahr)); - printk(KERN_DEBUG "EMAC_IAL ==> 0x%x\n", in_be32(&emacp->em0ialr)); - printk(KERN_DEBUG "EMAC_VLAN_TPID_REG ==> 0x%x\n", - in_be32(&emacp->em0vtpid)); + unsigned int i; + unsigned long flags; + + local_irq_save(flags); + + for (i = 0; i < sizeof(__mals) / sizeof(__mals[0]); ++i) + if (__mals[i]) + emac_mal_dump(__mals[i]); + + for (i = 0; i < sizeof(__emacs) / sizeof(__emacs[0]); ++i) + if (__emacs[i]) + emac_mac_dump(i, __emacs[i]); + + local_irq_restore(flags); } -void emac_mal_dump(struct net_device *dev) +#if defined(CONFIG_MAGIC_SYSRQ) +static void emac_sysrq_handler(int key, struct pt_regs *pt_regs, + struct tty_struct *tty) { - struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal; - - printk(KERN_DEBUG " MAL DEBUG ********** \n"); - printk(KERN_DEBUG " MCR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALCR)); - printk(KERN_DEBUG " ESR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALESR)); - printk(KERN_DEBUG " IER ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALIER)); -#ifdef CONFIG_40x - printk(KERN_DEBUG " DBR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALDBR)); -#endif /* CONFIG_40x */ - printk(KERN_DEBUG " TXCASR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCASR)); - printk(KERN_DEBUG " TXCARR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCARR)); - printk(KERN_DEBUG " TXEOBISR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXEOBISR)); - printk(KERN_DEBUG " TXDEIR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXDEIR)); - printk(KERN_DEBUG " RXCASR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCASR)); - printk(KERN_DEBUG " RXCARR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCARR)); - printk(KERN_DEBUG " RXEOBISR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXEOBISR)); - printk(KERN_DEBUG " RXDEIR ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXDEIR)); - printk(KERN_DEBUG " TXCTP0R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP0R)); - printk(KERN_DEBUG " TXCTP1R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP1R)); - printk(KERN_DEBUG " TXCTP2R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP2R)); - printk(KERN_DEBUG " TXCTP3R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALTXCTP3R)); - printk(KERN_DEBUG " RXCTP0R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCTP0R)); - printk(KERN_DEBUG " RXCTP1R ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRXCTP1R)); - printk(KERN_DEBUG " RCBS0 ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRCBS0)); - printk(KERN_DEBUG " RCBS1 ==> 0x%x\n", - (unsigned int)get_mal_dcrn(mal, DCRN_MALRCBS1)); + emac_dbg_dump_all(); } -void emac_serr_dump_0(struct net_device *dev) +static struct sysrq_key_op emac_sysrq_op = { + .handler = emac_sysrq_handler, + .help_msg = "emaC", + .action_msg = "Show EMAC(s) status", +}; + +int __init emac_init_debug(void) { - struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal; - unsigned long int mal_error, plb_error, plb_addr; - - mal_error = get_mal_dcrn(mal, DCRN_MALESR); - printk(KERN_DEBUG "ppc405_eth_serr: %s channel %ld \n", - (mal_error & 0x40000000) ? "Receive" : - "Transmit", (mal_error & 0x3e000000) >> 25); - printk(KERN_DEBUG " ----- latched error -----\n"); - if (mal_error & MALESR_DE) - printk(KERN_DEBUG " DE: descriptor error\n"); - if (mal_error & MALESR_OEN) - printk(KERN_DEBUG " ONE: OPB non-fullword error\n"); - if (mal_error & MALESR_OTE) - printk(KERN_DEBUG " OTE: OPB timeout error\n"); - if (mal_error & MALESR_OSE) - printk(KERN_DEBUG " OSE: OPB slave error\n"); - - if (mal_error & MALESR_PEIN) { - plb_error = mfdcr(DCRN_PLB0_BESR); - printk(KERN_DEBUG - " PEIN: PLB error, PLB0_BESR is 0x%x\n", - (unsigned int)plb_error); - plb_addr = mfdcr(DCRN_PLB0_BEAR); - printk(KERN_DEBUG - " PEIN: PLB error, PLB0_BEAR is 0x%x\n", - (unsigned int)plb_addr); - } + return register_sysrq_key('c', &emac_sysrq_op); } -void emac_serr_dump_1(struct net_device *dev) +void __exit emac_fini_debug(void) { - struct ibm_ocp_mal *mal = ((struct ocp_enet_private *)dev->priv)->mal; - int mal_error = get_mal_dcrn(mal, DCRN_MALESR); - - printk(KERN_DEBUG " ----- cumulative errors -----\n"); - if (mal_error & MALESR_DEI) - printk(KERN_DEBUG " DEI: descriptor error interrupt\n"); - if (mal_error & MALESR_ONEI) - printk(KERN_DEBUG " OPB non-fullword error interrupt\n"); - if (mal_error & MALESR_OTEI) - printk(KERN_DEBUG " OTEI: timeout error interrupt\n"); - if (mal_error & MALESR_OSEI) - printk(KERN_DEBUG " OSEI: slave error interrupt\n"); - if (mal_error & MALESR_PBEI) - printk(KERN_DEBUG " PBEI: PLB bus error interrupt\n"); + unregister_sysrq_key('c', &emac_sysrq_op); } -void emac_err_dump(struct net_device *dev, int em0isr) +#else +int __init emac_init_debug(void) +{ + return 0; +} +void __exit emac_fini_debug(void) { - printk(KERN_DEBUG "%s: on-chip ethernet error:\n", dev->name); - - if (em0isr & EMAC_ISR_OVR) - printk(KERN_DEBUG " OVR: overrun\n"); - if (em0isr & EMAC_ISR_PP) - printk(KERN_DEBUG " PP: control pause packet\n"); - if (em0isr & EMAC_ISR_BP) - printk(KERN_DEBUG " BP: packet error\n"); - if (em0isr & EMAC_ISR_RP) - printk(KERN_DEBUG " RP: runt packet\n"); - if (em0isr & EMAC_ISR_SE) - printk(KERN_DEBUG " SE: short event\n"); - if (em0isr & EMAC_ISR_ALE) - printk(KERN_DEBUG " ALE: odd number of nibbles in packet\n"); - if (em0isr & EMAC_ISR_BFCS) - printk(KERN_DEBUG " BFCS: bad FCS\n"); - if (em0isr & EMAC_ISR_PTLE) - printk(KERN_DEBUG " PTLE: oversized packet\n"); - if (em0isr & EMAC_ISR_ORE) - printk(KERN_DEBUG - " ORE: packet length field > max allowed LLC\n"); - if (em0isr & EMAC_ISR_IRE) - printk(KERN_DEBUG " IRE: In Range error\n"); - if (em0isr & EMAC_ISR_DBDM) - printk(KERN_DEBUG " DBDM: xmit error or SQE\n"); - if (em0isr & EMAC_ISR_DB0) - printk(KERN_DEBUG " DB0: xmit error or SQE on TX channel 0\n"); - if (em0isr & EMAC_ISR_SE0) - printk(KERN_DEBUG - " SE0: Signal Quality Error test failure from TX channel 0\n"); - if (em0isr & EMAC_ISR_TE0) - printk(KERN_DEBUG " TE0: xmit channel 0 aborted\n"); - if (em0isr & EMAC_ISR_DB1) - printk(KERN_DEBUG " DB1: xmit error or SQE on TX channel \n"); - if (em0isr & EMAC_ISR_SE1) - printk(KERN_DEBUG - " SE1: Signal Quality Error test failure from TX channel 1\n"); - if (em0isr & EMAC_ISR_TE1) - printk(KERN_DEBUG " TE1: xmit channel 1 aborted\n"); - if (em0isr & EMAC_ISR_MOS) - printk(KERN_DEBUG " MOS\n"); - if (em0isr & EMAC_ISR_MOF) - printk(KERN_DEBUG " MOF\n"); - - emac_mac_dump(dev); - emac_mal_dump(dev); } +#endif /* CONFIG_MAGIC_SYSRQ */ diff --git a/drivers/net/ibm_emac/ibm_emac_debug.h b/drivers/net/ibm_emac/ibm_emac_debug.h new file mode 100644 index 0000000..e85fbe0 --- /dev/null +++ b/drivers/net/ibm_emac/ibm_emac_debug.h @@ -0,0 +1,63 @@ +/* + * drivers/net/ibm_emac/ibm_ocp_debug.h + * + * Driver for PowerPC 4xx on-chip ethernet controller, debug print routines. + * + * Copyright (c) 2004, 2005 Zultys Technologies + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#ifndef __IBM_EMAC_DEBUG_H_ +#define __IBM_EMAC_DEBUG_H_ + +#include <linux/config.h> +#include <linux/init.h> +#include "ibm_emac_core.h" +#include "ibm_emac_mal.h" + +#if defined(CONFIG_IBM_EMAC_DEBUG) +void emac_dbg_register(int idx, struct ocp_enet_private *dev); +void mal_dbg_register(int idx, struct ibm_ocp_mal *mal); +int emac_init_debug(void) __init; +void emac_fini_debug(void) __exit; +void emac_dbg_dump_all(void); +# define DBG_LEVEL 1 +#else +# define emac_dbg_register(x,y) ((void)0) +# define mal_dbg_register(x,y) ((void)0) +# define emac_init_debug() ((void)0) +# define emac_fini_debug() ((void)0) +# define emac_dbg_dump_all() ((void)0) +# define DBG_LEVEL 0 +#endif + +#if DBG_LEVEL > 0 +# define DBG(f,x...) printk("emac" f, ##x) +# define MAL_DBG(f,x...) printk("mal" f, ##x) +# define ZMII_DBG(f,x...) printk("zmii" f, ##x) +# define RGMII_DBG(f,x...) printk("rgmii" f, ##x) +# define NL "\n" +#else +# define DBG(f,x...) ((void)0) +# define MAL_DBG(f,x...) ((void)0) +# define ZMII_DBG(f,x...) ((void)0) +# define RGMII_DBG(f,x...) ((void)0) +#endif +#if DBG_LEVEL > 1 +# define DBG2(f,x...) DBG(f, ##x) +# define MAL_DBG2(f,x...) MAL_DBG(f, ##x) +# define ZMII_DBG2(f,x...) ZMII_DBG(f, ##x) +# define RGMII_DBG2(f,x...) RGMII_DBG(f, ##x) +#else +# define DBG2(f,x...) ((void)0) +# define MAL_DBG2(f,x...) ((void)0) +# define ZMII_DBG2(f,x...) ((void)0) +# define RGMII_DBG2(f,x...) ((void)0) +#endif + +#endif /* __IBM_EMAC_DEBUG_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_mal.c b/drivers/net/ibm_emac/ibm_emac_mal.c index e59f57f..da88d43 100644 --- a/drivers/net/ibm_emac/ibm_emac_mal.c +++ b/drivers/net/ibm_emac/ibm_emac_mal.c @@ -1,436 +1,565 @@ /* - * ibm_ocp_mal.c + * drivers/net/ibm_emac/ibm_emac_mal.c * - * Armin Kuster akuster@mvista.com - * Juen, 2002 + * Memory Access Layer (MAL) support + * + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * - * Copyright 2002 MontaVista Softare Inc. + * Based on original work by + * Benjamin Herrenschmidt <benh@kernel.crashing.org>, + * David Gibson <hermes@gibson.dropbear.id.au>, + * + * Armin Kuster <akuster@mvista.com> + * Copyright 2002 MontaVista Softare Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. + * */ - #include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/errno.h> #include <linux/netdevice.h> #include <linux/init.h> +#include <linux/interrupt.h> #include <linux/dma-mapping.h> -#include <asm/io.h> -#include <asm/irq.h> #include <asm/ocp.h> +#include "ibm_emac_core.h" #include "ibm_emac_mal.h" +#include "ibm_emac_debug.h" -// Locking: Should we share a lock with the client ? The client could provide -// a lock pointer (optionally) in the commac structure... I don't think this is -// really necessary though - -/* This lock protects the commac list. On today UP implementations, it's - * really only used as IRQ protection in mal_{register,unregister}_commac() - */ -static DEFINE_RWLOCK(mal_list_lock); - -int mal_register_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac) +int __init mal_register_commac(struct ibm_ocp_mal *mal, + struct mal_commac *commac) { unsigned long flags; + local_irq_save(flags); - write_lock_irqsave(&mal_list_lock, flags); + MAL_DBG("%d: reg(%08x, %08x)" NL, mal->def->index, + commac->tx_chan_mask, commac->rx_chan_mask); - /* Don't let multiple commacs claim the same channel */ + /* Don't let multiple commacs claim the same channel(s) */ if ((mal->tx_chan_mask & commac->tx_chan_mask) || (mal->rx_chan_mask & commac->rx_chan_mask)) { - write_unlock_irqrestore(&mal_list_lock, flags); + local_irq_restore(flags); + printk(KERN_WARNING "mal%d: COMMAC channels conflict!\n", + mal->def->index); return -EBUSY; } mal->tx_chan_mask |= commac->tx_chan_mask; mal->rx_chan_mask |= commac->rx_chan_mask; + list_add(&commac->list, &mal->list); - list_add(&commac->list, &mal->commac); - - write_unlock_irqrestore(&mal_list_lock, flags); - + local_irq_restore(flags); return 0; } -int mal_unregister_commac(struct ibm_ocp_mal *mal, struct mal_commac *commac) +void __exit mal_unregister_commac(struct ibm_ocp_mal *mal, + struct mal_commac *commac) { unsigned long flags; + local_irq_save(flags); - write_lock_irqsave(&mal_list_lock, flags); + MAL_DBG("%d: unreg(%08x, %08x)" NL, mal->def->index, + commac->tx_chan_mask, commac->rx_chan_mask); mal->tx_chan_mask &= ~commac->tx_chan_mask; mal->rx_chan_mask &= ~commac->rx_chan_mask; - list_del_init(&commac->list); - write_unlock_irqrestore(&mal_list_lock, flags); - - return 0; + local_irq_restore(flags); } int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, unsigned long size) { - switch (channel) { - case 0: - set_mal_dcrn(mal, DCRN_MALRCBS0, size); - break; -#ifdef DCRN_MALRCBS1 - case 1: - set_mal_dcrn(mal, DCRN_MALRCBS1, size); - break; -#endif -#ifdef DCRN_MALRCBS2 - case 2: - set_mal_dcrn(mal, DCRN_MALRCBS2, size); - break; -#endif -#ifdef DCRN_MALRCBS3 - case 3: - set_mal_dcrn(mal, DCRN_MALRCBS3, size); - break; -#endif - default: + struct ocp_func_mal_data *maldata = mal->def->additions; + BUG_ON(channel < 0 || channel >= maldata->num_rx_chans || + size > MAL_MAX_RX_SIZE); + + MAL_DBG("%d: set_rbcs(%d, %lu)" NL, mal->def->index, channel, size); + + if (size & 0xf) { + printk(KERN_WARNING + "mal%d: incorrect RX size %lu for the channel %d\n", + mal->def->index, size, channel); return -EINVAL; } + set_mal_dcrn(mal, MAL_RCBS(channel), size >> 4); return 0; } -static irqreturn_t mal_serr(int irq, void *dev_instance, struct pt_regs *regs) +int mal_tx_bd_offset(struct ibm_ocp_mal *mal, int channel) { - struct ibm_ocp_mal *mal = dev_instance; - unsigned long mal_error; + struct ocp_func_mal_data *maldata = mal->def->additions; + BUG_ON(channel < 0 || channel >= maldata->num_tx_chans); + return channel * NUM_TX_BUFF; +} - /* - * This SERR applies to one of the devices on the MAL, here we charge - * it against the first EMAC registered for the MAL. - */ +int mal_rx_bd_offset(struct ibm_ocp_mal *mal, int channel) +{ + struct ocp_func_mal_data *maldata = mal->def->additions; + BUG_ON(channel < 0 || channel >= maldata->num_rx_chans); + return maldata->num_tx_chans * NUM_TX_BUFF + channel * NUM_RX_BUFF; +} - mal_error = get_mal_dcrn(mal, DCRN_MALESR); +void mal_enable_tx_channel(struct ibm_ocp_mal *mal, int channel) +{ + local_bh_disable(); + MAL_DBG("%d: enable_tx(%d)" NL, mal->def->index, channel); + set_mal_dcrn(mal, MAL_TXCASR, + get_mal_dcrn(mal, MAL_TXCASR) | MAL_CHAN_MASK(channel)); + local_bh_enable(); +} - printk(KERN_ERR "%s: System Error (MALESR=%lx)\n", - "MAL" /* FIXME: get the name right */ , mal_error); +void mal_disable_tx_channel(struct ibm_ocp_mal *mal, int channel) +{ + set_mal_dcrn(mal, MAL_TXCARR, MAL_CHAN_MASK(channel)); + MAL_DBG("%d: disable_tx(%d)" NL, mal->def->index, channel); +} - /* FIXME: decipher error */ - /* DIXME: distribute to commacs, if possible */ +void mal_enable_rx_channel(struct ibm_ocp_mal *mal, int channel) +{ + local_bh_disable(); + MAL_DBG("%d: enable_rx(%d)" NL, mal->def->index, channel); + set_mal_dcrn(mal, MAL_RXCASR, + get_mal_dcrn(mal, MAL_RXCASR) | MAL_CHAN_MASK(channel)); + local_bh_enable(); +} - /* Clear the error status register */ - set_mal_dcrn(mal, DCRN_MALESR, mal_error); +void mal_disable_rx_channel(struct ibm_ocp_mal *mal, int channel) +{ + set_mal_dcrn(mal, MAL_RXCARR, MAL_CHAN_MASK(channel)); + MAL_DBG("%d: disable_rx(%d)" NL, mal->def->index, channel); +} - return IRQ_HANDLED; +void mal_poll_add(struct ibm_ocp_mal *mal, struct mal_commac *commac) +{ + local_bh_disable(); + MAL_DBG("%d: poll_add(%p)" NL, mal->def->index, commac); + list_add_tail(&commac->poll_list, &mal->poll_list); + local_bh_enable(); } -static irqreturn_t mal_txeob(int irq, void *dev_instance, struct pt_regs *regs) +void mal_poll_del(struct ibm_ocp_mal *mal, struct mal_commac *commac) +{ + local_bh_disable(); + MAL_DBG("%d: poll_del(%p)" NL, mal->def->index, commac); + list_del(&commac->poll_list); + local_bh_enable(); +} + +/* synchronized by mal_poll() */ +static inline void mal_enable_eob_irq(struct ibm_ocp_mal *mal) +{ + MAL_DBG2("%d: enable_irq" NL, mal->def->index); + set_mal_dcrn(mal, MAL_CFG, get_mal_dcrn(mal, MAL_CFG) | MAL_CFG_EOPIE); +} + +/* synchronized by __LINK_STATE_RX_SCHED bit in ndev->state */ +static inline void mal_disable_eob_irq(struct ibm_ocp_mal *mal) +{ + set_mal_dcrn(mal, MAL_CFG, get_mal_dcrn(mal, MAL_CFG) & ~MAL_CFG_EOPIE); + MAL_DBG2("%d: disable_irq" NL, mal->def->index); +} + +static irqreturn_t mal_serr(int irq, void *dev_instance, struct pt_regs *regs) { struct ibm_ocp_mal *mal = dev_instance; - struct list_head *l; - unsigned long isr; + u32 esr = get_mal_dcrn(mal, MAL_ESR); - isr = get_mal_dcrn(mal, DCRN_MALTXEOBISR); - set_mal_dcrn(mal, DCRN_MALTXEOBISR, isr); + /* Clear the error status register */ + set_mal_dcrn(mal, MAL_ESR, esr); - read_lock(&mal_list_lock); - list_for_each(l, &mal->commac) { - struct mal_commac *mc = list_entry(l, struct mal_commac, list); + MAL_DBG("%d: SERR %08x" NL, mal->def->index, esr); - if (isr & mc->tx_chan_mask) { - mc->ops->txeob(mc->dev, isr & mc->tx_chan_mask); + if (esr & MAL_ESR_EVB) { + if (esr & MAL_ESR_DE) { + /* We ignore Descriptor error, + * TXDE or RXDE interrupt will be generated anyway. + */ + return IRQ_HANDLED; } + + if (esr & MAL_ESR_PEIN) { + /* PLB error, it's probably buggy hardware or + * incorrect physical address in BD (i.e. bug) + */ + if (net_ratelimit()) + printk(KERN_ERR + "mal%d: system error, PLB (ESR = 0x%08x)\n", + mal->def->index, esr); + return IRQ_HANDLED; + } + + /* OPB error, it's probably buggy hardware or incorrect EBC setup */ + if (net_ratelimit()) + printk(KERN_ERR + "mal%d: system error, OPB (ESR = 0x%08x)\n", + mal->def->index, esr); } - read_unlock(&mal_list_lock); + return IRQ_HANDLED; +} + +static inline void mal_schedule_poll(struct ibm_ocp_mal *mal) +{ + if (likely(netif_rx_schedule_prep(&mal->poll_dev))) { + MAL_DBG2("%d: schedule_poll" NL, mal->def->index); + mal_disable_eob_irq(mal); + __netif_rx_schedule(&mal->poll_dev); + } else + MAL_DBG2("%d: already in poll" NL, mal->def->index); +} +static irqreturn_t mal_txeob(int irq, void *dev_instance, struct pt_regs *regs) +{ + struct ibm_ocp_mal *mal = dev_instance; + u32 r = get_mal_dcrn(mal, MAL_TXEOBISR); + MAL_DBG2("%d: txeob %08x" NL, mal->def->index, r); + mal_schedule_poll(mal); + set_mal_dcrn(mal, MAL_TXEOBISR, r); return IRQ_HANDLED; } static irqreturn_t mal_rxeob(int irq, void *dev_instance, struct pt_regs *regs) { struct ibm_ocp_mal *mal = dev_instance; - struct list_head *l; - unsigned long isr; + u32 r = get_mal_dcrn(mal, MAL_RXEOBISR); + MAL_DBG2("%d: rxeob %08x" NL, mal->def->index, r); + mal_schedule_poll(mal); + set_mal_dcrn(mal, MAL_RXEOBISR, r); + return IRQ_HANDLED; +} - isr = get_mal_dcrn(mal, DCRN_MALRXEOBISR); - set_mal_dcrn(mal, DCRN_MALRXEOBISR, isr); +static irqreturn_t mal_txde(int irq, void *dev_instance, struct pt_regs *regs) +{ + struct ibm_ocp_mal *mal = dev_instance; + u32 deir = get_mal_dcrn(mal, MAL_TXDEIR); + set_mal_dcrn(mal, MAL_TXDEIR, deir); - read_lock(&mal_list_lock); - list_for_each(l, &mal->commac) { - struct mal_commac *mc = list_entry(l, struct mal_commac, list); + MAL_DBG("%d: txde %08x" NL, mal->def->index, deir); - if (isr & mc->rx_chan_mask) { - mc->ops->rxeob(mc->dev, isr & mc->rx_chan_mask); - } - } - read_unlock(&mal_list_lock); + if (net_ratelimit()) + printk(KERN_ERR + "mal%d: TX descriptor error (TXDEIR = 0x%08x)\n", + mal->def->index, deir); return IRQ_HANDLED; } -static irqreturn_t mal_txde(int irq, void *dev_instance, struct pt_regs *regs) +static irqreturn_t mal_rxde(int irq, void *dev_instance, struct pt_regs *regs) { struct ibm_ocp_mal *mal = dev_instance; struct list_head *l; - unsigned long deir; + u32 deir = get_mal_dcrn(mal, MAL_RXDEIR); - deir = get_mal_dcrn(mal, DCRN_MALTXDEIR); + MAL_DBG("%d: rxde %08x" NL, mal->def->index, deir); - /* FIXME: print which MAL correctly */ - printk(KERN_WARNING "%s: Tx descriptor error (MALTXDEIR=%lx)\n", - "MAL", deir); - - read_lock(&mal_list_lock); - list_for_each(l, &mal->commac) { + list_for_each(l, &mal->list) { struct mal_commac *mc = list_entry(l, struct mal_commac, list); - - if (deir & mc->tx_chan_mask) { - mc->ops->txde(mc->dev, deir & mc->tx_chan_mask); + if (deir & mc->rx_chan_mask) { + mc->rx_stopped = 1; + mc->ops->rxde(mc->dev); } } - read_unlock(&mal_list_lock); + + mal_schedule_poll(mal); + set_mal_dcrn(mal, MAL_RXDEIR, deir); return IRQ_HANDLED; } -/* - * This interrupt should be very rare at best. This occurs when - * the hardware has a problem with the receive descriptors. The manual - * states that it occurs when the hardware cannot the receive descriptor - * empty bit is not set. The recovery mechanism will be to - * traverse through the descriptors, handle any that are marked to be - * handled and reinitialize each along the way. At that point the driver - * will be restarted. - */ -static irqreturn_t mal_rxde(int irq, void *dev_instance, struct pt_regs *regs) +static int mal_poll(struct net_device *ndev, int *budget) { - struct ibm_ocp_mal *mal = dev_instance; + struct ibm_ocp_mal *mal = ndev->priv; struct list_head *l; - unsigned long deir; - - deir = get_mal_dcrn(mal, DCRN_MALRXDEIR); + int rx_work_limit = min(ndev->quota, *budget), received = 0, done; + + MAL_DBG2("%d: poll(%d) %d ->" NL, mal->def->index, *budget, + rx_work_limit); + again: + /* Process TX skbs */ + list_for_each(l, &mal->poll_list) { + struct mal_commac *mc = + list_entry(l, struct mal_commac, poll_list); + mc->ops->poll_tx(mc->dev); + } - /* - * This really is needed. This case encountered in stress testing. + /* Process RX skbs. + * We _might_ need something more smart here to enforce polling fairness. */ - if (deir == 0) - return IRQ_HANDLED; - - /* FIXME: print which MAL correctly */ - printk(KERN_WARNING "%s: Rx descriptor error (MALRXDEIR=%lx)\n", - "MAL", deir); - - read_lock(&mal_list_lock); - list_for_each(l, &mal->commac) { - struct mal_commac *mc = list_entry(l, struct mal_commac, list); + list_for_each(l, &mal->poll_list) { + struct mal_commac *mc = + list_entry(l, struct mal_commac, poll_list); + int n = mc->ops->poll_rx(mc->dev, rx_work_limit); + if (n) { + received += n; + rx_work_limit -= n; + if (rx_work_limit <= 0) { + done = 0; + goto more_work; // XXX What if this is the last one ? + } + } + } - if (deir & mc->rx_chan_mask) { - mc->ops->rxde(mc->dev, deir & mc->rx_chan_mask); + /* We need to disable IRQs to protect from RXDE IRQ here */ + local_irq_disable(); + __netif_rx_complete(ndev); + mal_enable_eob_irq(mal); + local_irq_enable(); + + done = 1; + + /* Check for "rotting" packet(s) */ + list_for_each(l, &mal->poll_list) { + struct mal_commac *mc = + list_entry(l, struct mal_commac, poll_list); + if (unlikely(mc->ops->peek_rx(mc->dev) || mc->rx_stopped)) { + MAL_DBG2("%d: rotting packet" NL, mal->def->index); + if (netif_rx_reschedule(ndev, received)) + mal_disable_eob_irq(mal); + else + MAL_DBG2("%d: already in poll list" NL, + mal->def->index); + + if (rx_work_limit > 0) + goto again; + else + goto more_work; } + mc->ops->poll_tx(mc->dev); } - read_unlock(&mal_list_lock); - return IRQ_HANDLED; + more_work: + ndev->quota -= received; + *budget -= received; + + MAL_DBG2("%d: poll() %d <- %d" NL, mal->def->index, *budget, + done ? 0 : 1); + return done ? 0 : 1; +} + +static void mal_reset(struct ibm_ocp_mal *mal) +{ + int n = 10; + MAL_DBG("%d: reset" NL, mal->def->index); + + set_mal_dcrn(mal, MAL_CFG, MAL_CFG_SR); + + /* Wait for reset to complete (1 system clock) */ + while ((get_mal_dcrn(mal, MAL_CFG) & MAL_CFG_SR) && n) + --n; + + if (unlikely(!n)) + printk(KERN_ERR "mal%d: reset timeout\n", mal->def->index); +} + +int mal_get_regs_len(struct ibm_ocp_mal *mal) +{ + return sizeof(struct emac_ethtool_regs_subhdr) + + sizeof(struct ibm_mal_regs); +} + +void *mal_dump_regs(struct ibm_ocp_mal *mal, void *buf) +{ + struct emac_ethtool_regs_subhdr *hdr = buf; + struct ibm_mal_regs *regs = (struct ibm_mal_regs *)(hdr + 1); + struct ocp_func_mal_data *maldata = mal->def->additions; + int i; + + hdr->version = MAL_VERSION; + hdr->index = mal->def->index; + + regs->tx_count = maldata->num_tx_chans; + regs->rx_count = maldata->num_rx_chans; + + regs->cfg = get_mal_dcrn(mal, MAL_CFG); + regs->esr = get_mal_dcrn(mal, MAL_ESR); + regs->ier = get_mal_dcrn(mal, MAL_IER); + regs->tx_casr = get_mal_dcrn(mal, MAL_TXCASR); + regs->tx_carr = get_mal_dcrn(mal, MAL_TXCARR); + regs->tx_eobisr = get_mal_dcrn(mal, MAL_TXEOBISR); + regs->tx_deir = get_mal_dcrn(mal, MAL_TXDEIR); + regs->rx_casr = get_mal_dcrn(mal, MAL_RXCASR); + regs->rx_carr = get_mal_dcrn(mal, MAL_RXCARR); + regs->rx_eobisr = get_mal_dcrn(mal, MAL_RXEOBISR); + regs->rx_deir = get_mal_dcrn(mal, MAL_RXDEIR); + + for (i = 0; i < regs->tx_count; ++i) + regs->tx_ctpr[i] = get_mal_dcrn(mal, MAL_TXCTPR(i)); + + for (i = 0; i < regs->rx_count; ++i) { + regs->rx_ctpr[i] = get_mal_dcrn(mal, MAL_RXCTPR(i)); + regs->rcbs[i] = get_mal_dcrn(mal, MAL_RCBS(i)); + } + return regs + 1; } static int __init mal_probe(struct ocp_device *ocpdev) { - struct ibm_ocp_mal *mal = NULL; + struct ibm_ocp_mal *mal; struct ocp_func_mal_data *maldata; - int err = 0; + int err = 0, i, bd_size; + + MAL_DBG("%d: probe" NL, ocpdev->def->index); - maldata = (struct ocp_func_mal_data *)ocpdev->def->additions; + maldata = ocpdev->def->additions; if (maldata == NULL) { - printk(KERN_ERR "mal%d: Missing additional datas !\n", + printk(KERN_ERR "mal%d: missing additional data!\n", ocpdev->def->index); return -ENODEV; } - mal = kmalloc(sizeof(struct ibm_ocp_mal), GFP_KERNEL); - if (mal == NULL) { + mal = kzalloc(sizeof(struct ibm_ocp_mal), GFP_KERNEL); + if (!mal) { printk(KERN_ERR - "mal%d: Out of memory allocating MAL structure !\n", + "mal%d: out of memory allocating MAL structure!\n", ocpdev->def->index); return -ENOMEM; } - memset(mal, 0, sizeof(*mal)); - - switch (ocpdev->def->index) { - case 0: - mal->dcrbase = DCRN_MAL_BASE; - break; -#ifdef DCRN_MAL1_BASE - case 1: - mal->dcrbase = DCRN_MAL1_BASE; - break; -#endif - default: - BUG(); - } - - /**************************/ + mal->dcrbase = maldata->dcr_base; + mal->def = ocpdev->def; - INIT_LIST_HEAD(&mal->commac); + INIT_LIST_HEAD(&mal->poll_list); + set_bit(__LINK_STATE_START, &mal->poll_dev.state); + mal->poll_dev.weight = CONFIG_IBM_EMAC_POLL_WEIGHT; + mal->poll_dev.poll = mal_poll; + mal->poll_dev.priv = mal; + atomic_set(&mal->poll_dev.refcnt, 1); - set_mal_dcrn(mal, DCRN_MALRXCARR, 0xFFFFFFFF); - set_mal_dcrn(mal, DCRN_MALTXCARR, 0xFFFFFFFF); + INIT_LIST_HEAD(&mal->list); - set_mal_dcrn(mal, DCRN_MALCR, MALCR_MMSR); /* 384 */ - /* FIXME: Add delay */ + /* Load power-on reset defaults */ + mal_reset(mal); /* Set the MAL configuration register */ - set_mal_dcrn(mal, DCRN_MALCR, - MALCR_PLBB | MALCR_OPBBL | MALCR_LEA | - MALCR_PLBLT_DEFAULT); - - /* It would be nice to allocate buffers separately for each - * channel, but we can't because the channels share the upper - * 13 bits of address lines. Each channels buffer must also - * be 4k aligned, so we allocate 4k for each channel. This is - * inefficient FIXME: do better, if possible */ - mal->tx_virt_addr = dma_alloc_coherent(&ocpdev->dev, - MAL_DT_ALIGN * - maldata->num_tx_chans, - &mal->tx_phys_addr, GFP_KERNEL); - if (mal->tx_virt_addr == NULL) { + set_mal_dcrn(mal, MAL_CFG, MAL_CFG_DEFAULT | MAL_CFG_PLBB | + MAL_CFG_OPBBL | MAL_CFG_LEA); + + mal_enable_eob_irq(mal); + + /* Allocate space for BD rings */ + BUG_ON(maldata->num_tx_chans <= 0 || maldata->num_tx_chans > 32); + BUG_ON(maldata->num_rx_chans <= 0 || maldata->num_rx_chans > 32); + bd_size = sizeof(struct mal_descriptor) * + (NUM_TX_BUFF * maldata->num_tx_chans + + NUM_RX_BUFF * maldata->num_rx_chans); + mal->bd_virt = + dma_alloc_coherent(&ocpdev->dev, bd_size, &mal->bd_dma, GFP_KERNEL); + + if (!mal->bd_virt) { printk(KERN_ERR - "mal%d: Out of memory allocating MAL descriptors !\n", - ocpdev->def->index); + "mal%d: out of memory allocating RX/TX descriptors!\n", + mal->def->index); err = -ENOMEM; goto fail; } + memset(mal->bd_virt, 0, bd_size); - /* God, oh, god, I hate DCRs */ - set_mal_dcrn(mal, DCRN_MALTXCTP0R, mal->tx_phys_addr); -#ifdef DCRN_MALTXCTP1R - if (maldata->num_tx_chans > 1) - set_mal_dcrn(mal, DCRN_MALTXCTP1R, - mal->tx_phys_addr + MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP1R */ -#ifdef DCRN_MALTXCTP2R - if (maldata->num_tx_chans > 2) - set_mal_dcrn(mal, DCRN_MALTXCTP2R, - mal->tx_phys_addr + 2 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP2R */ -#ifdef DCRN_MALTXCTP3R - if (maldata->num_tx_chans > 3) - set_mal_dcrn(mal, DCRN_MALTXCTP3R, - mal->tx_phys_addr + 3 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP3R */ -#ifdef DCRN_MALTXCTP4R - if (maldata->num_tx_chans > 4) - set_mal_dcrn(mal, DCRN_MALTXCTP4R, - mal->tx_phys_addr + 4 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP4R */ -#ifdef DCRN_MALTXCTP5R - if (maldata->num_tx_chans > 5) - set_mal_dcrn(mal, DCRN_MALTXCTP5R, - mal->tx_phys_addr + 5 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP5R */ -#ifdef DCRN_MALTXCTP6R - if (maldata->num_tx_chans > 6) - set_mal_dcrn(mal, DCRN_MALTXCTP6R, - mal->tx_phys_addr + 6 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP6R */ -#ifdef DCRN_MALTXCTP7R - if (maldata->num_tx_chans > 7) - set_mal_dcrn(mal, DCRN_MALTXCTP7R, - mal->tx_phys_addr + 7 * MAL_DT_ALIGN); -#endif /* DCRN_MALTXCTP7R */ - - mal->rx_virt_addr = dma_alloc_coherent(&ocpdev->dev, - MAL_DT_ALIGN * - maldata->num_rx_chans, - &mal->rx_phys_addr, GFP_KERNEL); - - set_mal_dcrn(mal, DCRN_MALRXCTP0R, mal->rx_phys_addr); -#ifdef DCRN_MALRXCTP1R - if (maldata->num_rx_chans > 1) - set_mal_dcrn(mal, DCRN_MALRXCTP1R, - mal->rx_phys_addr + MAL_DT_ALIGN); -#endif /* DCRN_MALRXCTP1R */ -#ifdef DCRN_MALRXCTP2R - if (maldata->num_rx_chans > 2) - set_mal_dcrn(mal, DCRN_MALRXCTP2R, - mal->rx_phys_addr + 2 * MAL_DT_ALIGN); -#endif /* DCRN_MALRXCTP2R */ -#ifdef DCRN_MALRXCTP3R - if (maldata->num_rx_chans > 3) - set_mal_dcrn(mal, DCRN_MALRXCTP3R, - mal->rx_phys_addr + 3 * MAL_DT_ALIGN); -#endif /* DCRN_MALRXCTP3R */ + for (i = 0; i < maldata->num_tx_chans; ++i) + set_mal_dcrn(mal, MAL_TXCTPR(i), mal->bd_dma + + sizeof(struct mal_descriptor) * + mal_tx_bd_offset(mal, i)); + + for (i = 0; i < maldata->num_rx_chans; ++i) + set_mal_dcrn(mal, MAL_RXCTPR(i), mal->bd_dma + + sizeof(struct mal_descriptor) * + mal_rx_bd_offset(mal, i)); err = request_irq(maldata->serr_irq, mal_serr, 0, "MAL SERR", mal); if (err) - goto fail; - err = request_irq(maldata->txde_irq, mal_txde, 0, "MAL TX DE ", mal); + goto fail2; + err = request_irq(maldata->txde_irq, mal_txde, 0, "MAL TX DE", mal); if (err) - goto fail; + goto fail3; err = request_irq(maldata->txeob_irq, mal_txeob, 0, "MAL TX EOB", mal); if (err) - goto fail; + goto fail4; err = request_irq(maldata->rxde_irq, mal_rxde, 0, "MAL RX DE", mal); if (err) - goto fail; + goto fail5; err = request_irq(maldata->rxeob_irq, mal_rxeob, 0, "MAL RX EOB", mal); if (err) - goto fail; + goto fail6; - set_mal_dcrn(mal, DCRN_MALIER, - MALIER_DE | MALIER_NE | MALIER_TE | - MALIER_OPBE | MALIER_PLBE); + /* Enable all MAL SERR interrupt sources */ + set_mal_dcrn(mal, MAL_IER, MAL_IER_EVENTS); - /* Advertise me to the rest of the world */ + /* Advertise this instance to the rest of the world */ ocp_set_drvdata(ocpdev, mal); - printk(KERN_INFO "mal%d: Initialized, %d tx channels, %d rx channels\n", - ocpdev->def->index, maldata->num_tx_chans, - maldata->num_rx_chans); + mal_dbg_register(mal->def->index, mal); + printk(KERN_INFO "mal%d: initialized, %d TX channels, %d RX channels\n", + mal->def->index, maldata->num_tx_chans, maldata->num_rx_chans); return 0; + fail6: + free_irq(maldata->rxde_irq, mal); + fail5: + free_irq(maldata->txeob_irq, mal); + fail4: + free_irq(maldata->txde_irq, mal); + fail3: + free_irq(maldata->serr_irq, mal); + fail2: + dma_free_coherent(&ocpdev->dev, bd_size, mal->bd_virt, mal->bd_dma); fail: - /* FIXME: dispose requested IRQs ! */ - if (err && mal) - kfree(mal); + kfree(mal); return err; } static void __exit mal_remove(struct ocp_device *ocpdev) { struct ibm_ocp_mal *mal = ocp_get_drvdata(ocpdev); - struct ocp_func_mal_data *maldata = ocpdev->def->additions; + struct ocp_func_mal_data *maldata = mal->def->additions; + + MAL_DBG("%d: remove" NL, mal->def->index); - BUG_ON(!maldata); + /* Syncronize with scheduled polling, + stolen from net/core/dev.c:dev_close() + */ + clear_bit(__LINK_STATE_START, &mal->poll_dev.state); + netif_poll_disable(&mal->poll_dev); + + if (!list_empty(&mal->list)) { + /* This is *very* bad */ + printk(KERN_EMERG + "mal%d: commac list is not empty on remove!\n", + mal->def->index); + } ocp_set_drvdata(ocpdev, NULL); - /* FIXME: shut down the MAL, deal with dependency with emac */ free_irq(maldata->serr_irq, mal); free_irq(maldata->txde_irq, mal); free_irq(maldata->txeob_irq, mal); free_irq(maldata->rxde_irq, mal); free_irq(maldata->rxeob_irq, mal); - if (mal->tx_virt_addr) - dma_free_coherent(&ocpdev->dev, - MAL_DT_ALIGN * maldata->num_tx_chans, - mal->tx_virt_addr, mal->tx_phys_addr); + mal_reset(mal); - if (mal->rx_virt_addr) - dma_free_coherent(&ocpdev->dev, - MAL_DT_ALIGN * maldata->num_rx_chans, - mal->rx_virt_addr, mal->rx_phys_addr); + mal_dbg_register(mal->def->index, NULL); + + dma_free_coherent(&ocpdev->dev, + sizeof(struct mal_descriptor) * + (NUM_TX_BUFF * maldata->num_tx_chans + + NUM_RX_BUFF * maldata->num_rx_chans), mal->bd_virt, + mal->bd_dma); kfree(mal); } /* Structure for a device driver */ static struct ocp_device_id mal_ids[] = { - {.vendor = OCP_ANY_ID,.function = OCP_FUNC_MAL}, - {.vendor = OCP_VENDOR_INVALID} + { .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_MAL }, + { .vendor = OCP_VENDOR_INVALID} }; static struct ocp_driver mal_driver = { @@ -441,23 +570,14 @@ static struct ocp_driver mal_driver = { .remove = mal_remove, }; -static int __init init_mals(void) +int __init mal_init(void) { - int rc; - - rc = ocp_register_driver(&mal_driver); - if (rc < 0) { - ocp_unregister_driver(&mal_driver); - return -ENODEV; - } - - return 0; + MAL_DBG(": init" NL); + return ocp_register_driver(&mal_driver); } -static void __exit exit_mals(void) +void __exit mal_exit(void) { + MAL_DBG(": exit" NL); ocp_unregister_driver(&mal_driver); } - -module_init(init_mals); -module_exit(exit_mals); diff --git a/drivers/net/ibm_emac/ibm_emac_mal.h b/drivers/net/ibm_emac/ibm_emac_mal.h index dd9f0da..15b0bda 100644 --- a/drivers/net/ibm_emac/ibm_emac_mal.h +++ b/drivers/net/ibm_emac/ibm_emac_mal.h @@ -1,131 +1,267 @@ -#ifndef _IBM_EMAC_MAL_H -#define _IBM_EMAC_MAL_H +/* + * drivers/net/ibm_emac/ibm_emac_mal.h + * + * Memory Access Layer (MAL) support + * + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> + * + * Based on original work by + * Armin Kuster <akuster@mvista.com> + * Copyright 2002 MontaVista Softare Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#ifndef __IBM_EMAC_MAL_H_ +#define __IBM_EMAC_MAL_H_ +#include <linux/config.h> +#include <linux/init.h> #include <linux/list.h> +#include <linux/netdevice.h> -#define MAL_DT_ALIGN (4096) /* Alignment for each channel's descriptor table */ +#include <asm/io.h> -#define MAL_CHAN_MASK(chan) (0x80000000 >> (chan)) +/* + * These MAL "versions" probably aren't the real versions IBM uses for these + * MAL cores, I assigned them just to make #ifdefs in this file nicer and + * reflect the fact that 40x and 44x have slightly different MALs. --ebs + */ +#if defined(CONFIG_405GP) || defined(CONFIG_405GPR) || defined(CONFIG_405EP) || \ + defined(CONFIG_440EP) || defined(CONFIG_NP405H) +#define MAL_VERSION 1 +#elif defined(CONFIG_440GP) || defined(CONFIG_440GX) || defined(CONFIG_440SP) +#define MAL_VERSION 2 +#else +#error "Unknown SoC, please check chip manual and choose MAL 'version'" +#endif + +/* MALx DCR registers */ +#define MAL_CFG 0x00 +#define MAL_CFG_SR 0x80000000 +#define MAL_CFG_PLBB 0x00004000 +#define MAL_CFG_OPBBL 0x00000080 +#define MAL_CFG_EOPIE 0x00000004 +#define MAL_CFG_LEA 0x00000002 +#define MAL_CFG_SD 0x00000001 +#if MAL_VERSION == 1 +#define MAL_CFG_PLBP_MASK 0x00c00000 +#define MAL_CFG_PLBP_10 0x00800000 +#define MAL_CFG_GA 0x00200000 +#define MAL_CFG_OA 0x00100000 +#define MAL_CFG_PLBLE 0x00080000 +#define MAL_CFG_PLBT_MASK 0x00078000 +#define MAL_CFG_DEFAULT (MAL_CFG_PLBP_10 | MAL_CFG_PLBT_MASK) +#elif MAL_VERSION == 2 +#define MAL_CFG_RPP_MASK 0x00c00000 +#define MAL_CFG_RPP_10 0x00800000 +#define MAL_CFG_RMBS_MASK 0x00300000 +#define MAL_CFG_WPP_MASK 0x000c0000 +#define MAL_CFG_WPP_10 0x00080000 +#define MAL_CFG_WMBS_MASK 0x00030000 +#define MAL_CFG_PLBLE 0x00008000 +#define MAL_CFG_DEFAULT (MAL_CFG_RMBS_MASK | MAL_CFG_WMBS_MASK | \ + MAL_CFG_RPP_10 | MAL_CFG_WPP_10) +#else +#error "Unknown MAL version" +#endif + +#define MAL_ESR 0x01 +#define MAL_ESR_EVB 0x80000000 +#define MAL_ESR_CIDT 0x40000000 +#define MAL_ESR_CID_MASK 0x3e000000 +#define MAL_ESR_CID_SHIFT 25 +#define MAL_ESR_DE 0x00100000 +#define MAL_ESR_OTE 0x00040000 +#define MAL_ESR_OSE 0x00020000 +#define MAL_ESR_PEIN 0x00010000 +#define MAL_ESR_DEI 0x00000010 +#define MAL_ESR_OTEI 0x00000004 +#define MAL_ESR_OSEI 0x00000002 +#define MAL_ESR_PBEI 0x00000001 +#if MAL_VERSION == 1 +#define MAL_ESR_ONE 0x00080000 +#define MAL_ESR_ONEI 0x00000008 +#elif MAL_VERSION == 2 +#define MAL_ESR_PTE 0x00800000 +#define MAL_ESR_PRE 0x00400000 +#define MAL_ESR_PWE 0x00200000 +#define MAL_ESR_PTEI 0x00000080 +#define MAL_ESR_PREI 0x00000040 +#define MAL_ESR_PWEI 0x00000020 +#else +#error "Unknown MAL version" +#endif + +#define MAL_IER 0x02 +#define MAL_IER_DE 0x00000010 +#define MAL_IER_OTE 0x00000004 +#define MAL_IER_OE 0x00000002 +#define MAL_IER_PE 0x00000001 +#if MAL_VERSION == 1 +#define MAL_IER_NWE 0x00000008 +#define MAL_IER_SOC_EVENTS MAL_IER_NWE +#elif MAL_VERSION == 2 +#define MAL_IER_PT 0x00000080 +#define MAL_IER_PRE 0x00000040 +#define MAL_IER_PWE 0x00000020 +#define MAL_IER_SOC_EVENTS (MAL_IER_PT | MAL_IER_PRE | MAL_IER_PWE) +#else +#error "Unknown MAL version" +#endif +#define MAL_IER_EVENTS (MAL_IER_SOC_EVENTS | MAL_IER_OTE | \ + MAL_IER_OTE | MAL_IER_OE | MAL_IER_PE) + +#define MAL_TXCASR 0x04 +#define MAL_TXCARR 0x05 +#define MAL_TXEOBISR 0x06 +#define MAL_TXDEIR 0x07 +#define MAL_RXCASR 0x10 +#define MAL_RXCARR 0x11 +#define MAL_RXEOBISR 0x12 +#define MAL_RXDEIR 0x13 +#define MAL_TXCTPR(n) ((n) + 0x20) +#define MAL_RXCTPR(n) ((n) + 0x40) +#define MAL_RCBS(n) ((n) + 0x60) + +/* In reality MAL can handle TX buffers up to 4095 bytes long, + * but this isn't a good round number :) --ebs + */ +#define MAL_MAX_TX_SIZE 4080 +#define MAL_MAX_RX_SIZE 4080 + +static inline int mal_rx_size(int len) +{ + len = (len + 0xf) & ~0xf; + return len > MAL_MAX_RX_SIZE ? MAL_MAX_RX_SIZE : len; +} + +static inline int mal_tx_chunks(int len) +{ + return (len + MAL_MAX_TX_SIZE - 1) / MAL_MAX_TX_SIZE; +} + +#define MAL_CHAN_MASK(n) (0x80000000 >> (n)) /* MAL Buffer Descriptor structure */ struct mal_descriptor { - unsigned short ctrl; /* MAL / Commac status control bits */ - short data_len; /* Max length is 4K-1 (12 bits) */ - unsigned char *data_ptr; /* pointer to actual data buffer */ -} __attribute__ ((packed)); + u16 ctrl; /* MAL / Commac status control bits */ + u16 data_len; /* Max length is 4K-1 (12 bits) */ + u32 data_ptr; /* pointer to actual data buffer */ +}; /* the following defines are for the MadMAL status and control registers. */ /* MADMAL transmit and receive status/control bits */ -#define MAL_RX_CTRL_EMPTY 0x8000 -#define MAL_RX_CTRL_WRAP 0x4000 -#define MAL_RX_CTRL_CM 0x2000 -#define MAL_RX_CTRL_LAST 0x1000 -#define MAL_RX_CTRL_FIRST 0x0800 -#define MAL_RX_CTRL_INTR 0x0400 - -#define MAL_TX_CTRL_READY 0x8000 -#define MAL_TX_CTRL_WRAP 0x4000 -#define MAL_TX_CTRL_CM 0x2000 -#define MAL_TX_CTRL_LAST 0x1000 -#define MAL_TX_CTRL_INTR 0x0400 +#define MAL_RX_CTRL_EMPTY 0x8000 +#define MAL_RX_CTRL_WRAP 0x4000 +#define MAL_RX_CTRL_CM 0x2000 +#define MAL_RX_CTRL_LAST 0x1000 +#define MAL_RX_CTRL_FIRST 0x0800 +#define MAL_RX_CTRL_INTR 0x0400 +#define MAL_RX_CTRL_SINGLE (MAL_RX_CTRL_LAST | MAL_RX_CTRL_FIRST) +#define MAL_IS_SINGLE_RX(ctrl) (((ctrl) & MAL_RX_CTRL_SINGLE) == MAL_RX_CTRL_SINGLE) + +#define MAL_TX_CTRL_READY 0x8000 +#define MAL_TX_CTRL_WRAP 0x4000 +#define MAL_TX_CTRL_CM 0x2000 +#define MAL_TX_CTRL_LAST 0x1000 +#define MAL_TX_CTRL_INTR 0x0400 struct mal_commac_ops { - void (*txeob) (void *dev, u32 chanmask); - void (*txde) (void *dev, u32 chanmask); - void (*rxeob) (void *dev, u32 chanmask); - void (*rxde) (void *dev, u32 chanmask); + void (*poll_tx) (void *dev); + int (*poll_rx) (void *dev, int budget); + int (*peek_rx) (void *dev); + void (*rxde) (void *dev); }; struct mal_commac { - struct mal_commac_ops *ops; - void *dev; - u32 tx_chan_mask, rx_chan_mask; - struct list_head list; + struct mal_commac_ops *ops; + void *dev; + struct list_head poll_list; + int rx_stopped; + + u32 tx_chan_mask; + u32 rx_chan_mask; + struct list_head list; }; struct ibm_ocp_mal { - int dcrbase; + int dcrbase; - struct list_head commac; - u32 tx_chan_mask, rx_chan_mask; + struct list_head poll_list; + struct net_device poll_dev; - dma_addr_t tx_phys_addr; - struct mal_descriptor *tx_virt_addr; + struct list_head list; + u32 tx_chan_mask; + u32 rx_chan_mask; - dma_addr_t rx_phys_addr; - struct mal_descriptor *rx_virt_addr; -}; + dma_addr_t bd_dma; + struct mal_descriptor *bd_virt; -#define GET_MAL_STANZA(base,dcrn) \ - case base: \ - x = mfdcr(dcrn(base)); \ - break; - -#define SET_MAL_STANZA(base,dcrn, val) \ - case base: \ - mtdcr(dcrn(base), (val)); \ - break; - -#define GET_MAL0_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL_BASE,dcrn) -#define SET_MAL0_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL_BASE,dcrn,val) - -#ifdef DCRN_MAL1_BASE -#define GET_MAL1_STANZA(dcrn) GET_MAL_STANZA(DCRN_MAL1_BASE,dcrn) -#define SET_MAL1_STANZA(dcrn,val) SET_MAL_STANZA(DCRN_MAL1_BASE,dcrn,val) -#else /* ! DCRN_MAL1_BASE */ -#define GET_MAL1_STANZA(dcrn) -#define SET_MAL1_STANZA(dcrn,val) -#endif + struct ocp_def *def; +}; -#define get_mal_dcrn(mal, dcrn) ({ \ - u32 x; \ - switch ((mal)->dcrbase) { \ - GET_MAL0_STANZA(dcrn) \ - GET_MAL1_STANZA(dcrn) \ - default: \ - x = 0; \ - BUG(); \ - } \ -x; }) - -#define set_mal_dcrn(mal, dcrn, val) do { \ - switch ((mal)->dcrbase) { \ - SET_MAL0_STANZA(dcrn,val) \ - SET_MAL1_STANZA(dcrn,val) \ - default: \ - BUG(); \ - } } while (0) - -static inline void mal_enable_tx_channels(struct ibm_ocp_mal *mal, u32 chanmask) +static inline u32 get_mal_dcrn(struct ibm_ocp_mal *mal, int reg) { - set_mal_dcrn(mal, DCRN_MALTXCASR, - get_mal_dcrn(mal, DCRN_MALTXCASR) | chanmask); + return mfdcr(mal->dcrbase + reg); } -static inline void mal_disable_tx_channels(struct ibm_ocp_mal *mal, - u32 chanmask) +static inline void set_mal_dcrn(struct ibm_ocp_mal *mal, int reg, u32 val) { - set_mal_dcrn(mal, DCRN_MALTXCARR, chanmask); + mtdcr(mal->dcrbase + reg, val); } -static inline void mal_enable_rx_channels(struct ibm_ocp_mal *mal, u32 chanmask) -{ - set_mal_dcrn(mal, DCRN_MALRXCASR, - get_mal_dcrn(mal, DCRN_MALRXCASR) | chanmask); -} +/* Register MAL devices */ +int mal_init(void) __init; +void mal_exit(void) __exit; -static inline void mal_disable_rx_channels(struct ibm_ocp_mal *mal, - u32 chanmask) -{ - set_mal_dcrn(mal, DCRN_MALRXCARR, chanmask); -} +int mal_register_commac(struct ibm_ocp_mal *mal, + struct mal_commac *commac) __init; +void mal_unregister_commac(struct ibm_ocp_mal *mal, + struct mal_commac *commac) __exit; +int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, unsigned long size); + +/* Returns BD ring offset for a particular channel + (in 'struct mal_descriptor' elements) +*/ +int mal_tx_bd_offset(struct ibm_ocp_mal *mal, int channel); +int mal_rx_bd_offset(struct ibm_ocp_mal *mal, int channel); + +void mal_enable_tx_channel(struct ibm_ocp_mal *mal, int channel); +void mal_disable_tx_channel(struct ibm_ocp_mal *mal, int channel); +void mal_enable_rx_channel(struct ibm_ocp_mal *mal, int channel); +void mal_disable_rx_channel(struct ibm_ocp_mal *mal, int channel); -extern int mal_register_commac(struct ibm_ocp_mal *mal, - struct mal_commac *commac); -extern int mal_unregister_commac(struct ibm_ocp_mal *mal, - struct mal_commac *commac); +/* Add/remove EMAC to/from MAL polling list */ +void mal_poll_add(struct ibm_ocp_mal *mal, struct mal_commac *commac); +void mal_poll_del(struct ibm_ocp_mal *mal, struct mal_commac *commac); + +/* Ethtool MAL registers */ +struct ibm_mal_regs { + u32 tx_count; + u32 rx_count; + + u32 cfg; + u32 esr; + u32 ier; + u32 tx_casr; + u32 tx_carr; + u32 tx_eobisr; + u32 tx_deir; + u32 rx_casr; + u32 rx_carr; + u32 rx_eobisr; + u32 rx_deir; + u32 tx_ctpr[32]; + u32 rx_ctpr[32]; + u32 rcbs[32]; +}; -extern int mal_set_rcbs(struct ibm_ocp_mal *mal, int channel, - unsigned long size); +int mal_get_regs_len(struct ibm_ocp_mal *mal); +void *mal_dump_regs(struct ibm_ocp_mal *mal, void *buf); -#endif /* _IBM_EMAC_MAL_H */ +#endif /* __IBM_EMAC_MAL_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_phy.c b/drivers/net/ibm_emac/ibm_emac_phy.c index 14213f0..a27e49c 100644 --- a/drivers/net/ibm_emac/ibm_emac_phy.c +++ b/drivers/net/ibm_emac/ibm_emac_phy.c @@ -1,96 +1,80 @@ /* - * ibm_ocp_phy.c + * drivers/net/ibm_emac/ibm_emac_phy.c * - * PHY drivers for the ibm ocp ethernet driver. Borrowed - * from sungem_phy.c, though I only kept the generic MII + * Driver for PowerPC 4xx on-chip ethernet controller, PHY support. + * Borrowed from sungem_phy.c, though I only kept the generic MII * driver for now. * * This file should be shared with other drivers or eventually * merged as the "low level" part of miilib * * (c) 2003, Benjamin Herrenscmidt (benh@kernel.crashing.org) + * (c) 2004-2005, Eugene Surovegin <ebs@ebshome.net> * */ - #include <linux/config.h> - #include <linux/module.h> - #include <linux/kernel.h> -#include <linux/sched.h> #include <linux/types.h> #include <linux/netdevice.h> -#include <linux/etherdevice.h> #include <linux/mii.h> #include <linux/ethtool.h> #include <linux/delay.h> +#include <asm/ocp.h> + #include "ibm_emac_phy.h" -static int reset_one_mii_phy(struct mii_phy *phy, int phy_id) +static inline int phy_read(struct mii_phy *phy, int reg) +{ + return phy->mdio_read(phy->dev, phy->address, reg); +} + +static inline void phy_write(struct mii_phy *phy, int reg, int val) { - u16 val; + phy->mdio_write(phy->dev, phy->address, reg, val); +} + +int mii_reset_phy(struct mii_phy *phy) +{ + int val; int limit = 10000; - val = __phy_read(phy, phy_id, MII_BMCR); + val = phy_read(phy, MII_BMCR); val &= ~BMCR_ISOLATE; val |= BMCR_RESET; - __phy_write(phy, phy_id, MII_BMCR, val); + phy_write(phy, MII_BMCR, val); - udelay(100); + udelay(300); while (limit--) { - val = __phy_read(phy, phy_id, MII_BMCR); - if ((val & BMCR_RESET) == 0) + val = phy_read(phy, MII_BMCR); + if (val >= 0 && (val & BMCR_RESET) == 0) break; udelay(10); } if ((val & BMCR_ISOLATE) && limit > 0) - __phy_write(phy, phy_id, MII_BMCR, val & ~BMCR_ISOLATE); - - return (limit <= 0); -} - -static int cis8201_init(struct mii_phy *phy) -{ - u16 epcr; - - epcr = phy_read(phy, MII_CIS8201_EPCR); - epcr &= ~EPCR_MODE_MASK; - - switch (phy->mode) { - case PHY_MODE_TBI: - epcr |= EPCR_TBI_MODE; - break; - case PHY_MODE_RTBI: - epcr |= EPCR_RTBI_MODE; - break; - case PHY_MODE_GMII: - epcr |= EPCR_GMII_MODE; - break; - case PHY_MODE_RGMII: - default: - epcr |= EPCR_RGMII_MODE; - } + phy_write(phy, MII_BMCR, val & ~BMCR_ISOLATE); - phy_write(phy, MII_CIS8201_EPCR, epcr); - - return 0; + return limit <= 0; } static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise) { - u16 ctl, adv; + int ctl, adv; - phy->autoneg = 1; + phy->autoneg = AUTONEG_ENABLE; phy->speed = SPEED_10; phy->duplex = DUPLEX_HALF; - phy->pause = 0; + phy->pause = phy->asym_pause = 0; phy->advertising = advertise; /* Setup standard advertise */ adv = phy_read(phy, MII_ADVERTISE); - adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4); + if (adv < 0) + return adv; + adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | + ADVERTISE_PAUSE_ASYM); if (advertise & ADVERTISED_10baseT_Half) adv |= ADVERTISE_10HALF; if (advertise & ADVERTISED_10baseT_Full) @@ -99,8 +83,25 @@ static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise) adv |= ADVERTISE_100HALF; if (advertise & ADVERTISED_100baseT_Full) adv |= ADVERTISE_100FULL; + if (advertise & ADVERTISED_Pause) + adv |= ADVERTISE_PAUSE_CAP; + if (advertise & ADVERTISED_Asym_Pause) + adv |= ADVERTISE_PAUSE_ASYM; phy_write(phy, MII_ADVERTISE, adv); + if (phy->features & + (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) { + adv = phy_read(phy, MII_CTRL1000); + if (adv < 0) + return adv; + adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); + if (advertise & ADVERTISED_1000baseT_Full) + adv |= ADVERTISE_1000FULL; + if (advertise & ADVERTISED_1000baseT_Half) + adv |= ADVERTISE_1000HALF; + phy_write(phy, MII_CTRL1000, adv); + } + /* Start/Restart aneg */ ctl = phy_read(phy, MII_BMCR); ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); @@ -111,14 +112,16 @@ static int genmii_setup_aneg(struct mii_phy *phy, u32 advertise) static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd) { - u16 ctl; + int ctl; - phy->autoneg = 0; + phy->autoneg = AUTONEG_DISABLE; phy->speed = speed; phy->duplex = fd; - phy->pause = 0; + phy->pause = phy->asym_pause = 0; ctl = phy_read(phy, MII_BMCR); + if (ctl < 0) + return ctl; ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_ANENABLE); /* First reset the PHY */ @@ -132,6 +135,8 @@ static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd) ctl |= BMCR_SPEED100; break; case SPEED_1000: + ctl |= BMCR_SPEED1000; + break; default: return -EINVAL; } @@ -144,112 +149,143 @@ static int genmii_setup_forced(struct mii_phy *phy, int speed, int fd) static int genmii_poll_link(struct mii_phy *phy) { - u16 status; + int status; - (void)phy_read(phy, MII_BMSR); + /* Clear latched value with dummy read */ + phy_read(phy, MII_BMSR); status = phy_read(phy, MII_BMSR); - if ((status & BMSR_LSTATUS) == 0) + if (status < 0 || (status & BMSR_LSTATUS) == 0) return 0; - if (phy->autoneg && !(status & BMSR_ANEGCOMPLETE)) + if (phy->autoneg == AUTONEG_ENABLE && !(status & BMSR_ANEGCOMPLETE)) return 0; return 1; } -#define MII_CIS8201_ACSR 0x1c -#define ACSR_DUPLEX_STATUS 0x0020 -#define ACSR_SPEED_1000BASET 0x0010 -#define ACSR_SPEED_100BASET 0x0008 - -static int cis8201_read_link(struct mii_phy *phy) +static int genmii_read_link(struct mii_phy *phy) { - u16 acsr; + if (phy->autoneg == AUTONEG_ENABLE) { + int glpa = 0; + int lpa = phy_read(phy, MII_LPA) & phy_read(phy, MII_ADVERTISE); + if (lpa < 0) + return lpa; + + if (phy->features & + (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseT_Half)) { + int adv = phy_read(phy, MII_CTRL1000); + glpa = phy_read(phy, MII_STAT1000); + + if (glpa < 0 || adv < 0) + return adv; + + glpa &= adv << 2; + } + + phy->speed = SPEED_10; + phy->duplex = DUPLEX_HALF; + phy->pause = phy->asym_pause = 0; + + if (glpa & (LPA_1000FULL | LPA_1000HALF)) { + phy->speed = SPEED_1000; + if (glpa & LPA_1000FULL) + phy->duplex = DUPLEX_FULL; + } else if (lpa & (LPA_100FULL | LPA_100HALF)) { + phy->speed = SPEED_100; + if (lpa & LPA_100FULL) + phy->duplex = DUPLEX_FULL; + } else if (lpa & LPA_10FULL) + phy->duplex = DUPLEX_FULL; - if (phy->autoneg) { - acsr = phy_read(phy, MII_CIS8201_ACSR); + if (phy->duplex == DUPLEX_FULL) { + phy->pause = lpa & LPA_PAUSE_CAP ? 1 : 0; + phy->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0; + } + } else { + int bmcr = phy_read(phy, MII_BMCR); + if (bmcr < 0) + return bmcr; - if (acsr & ACSR_DUPLEX_STATUS) + if (bmcr & BMCR_FULLDPLX) phy->duplex = DUPLEX_FULL; else phy->duplex = DUPLEX_HALF; - if (acsr & ACSR_SPEED_1000BASET) { + if (bmcr & BMCR_SPEED1000) phy->speed = SPEED_1000; - } else if (acsr & ACSR_SPEED_100BASET) + else if (bmcr & BMCR_SPEED100) phy->speed = SPEED_100; else phy->speed = SPEED_10; - phy->pause = 0; - } - /* On non-aneg, we assume what we put in BMCR is the speed, - * though magic-aneg shouldn't prevent this case from occurring - */ + phy->pause = phy->asym_pause = 0; + } return 0; } -static int genmii_read_link(struct mii_phy *phy) +/* Generic implementation for most 10/100/1000 PHYs */ +static struct mii_phy_ops generic_phy_ops = { + .setup_aneg = genmii_setup_aneg, + .setup_forced = genmii_setup_forced, + .poll_link = genmii_poll_link, + .read_link = genmii_read_link +}; + +static struct mii_phy_def genmii_phy_def = { + .phy_id = 0x00000000, + .phy_id_mask = 0x00000000, + .name = "Generic MII", + .ops = &generic_phy_ops +}; + +/* CIS8201 */ +#define MII_CIS8201_EPCR 0x17 +#define EPCR_MODE_MASK 0x3000 +#define EPCR_GMII_MODE 0x0000 +#define EPCR_RGMII_MODE 0x1000 +#define EPCR_TBI_MODE 0x2000 +#define EPCR_RTBI_MODE 0x3000 + +static int cis8201_init(struct mii_phy *phy) { - u16 lpa; + int epcr; - if (phy->autoneg) { - lpa = phy_read(phy, MII_LPA) & phy_read(phy, MII_ADVERTISE); + epcr = phy_read(phy, MII_CIS8201_EPCR); + if (epcr < 0) + return epcr; - phy->speed = SPEED_10; - phy->duplex = DUPLEX_HALF; - phy->pause = 0; + epcr &= ~EPCR_MODE_MASK; - if (lpa & (LPA_100FULL | LPA_100HALF)) { - phy->speed = SPEED_100; - if (lpa & LPA_100FULL) - phy->duplex = DUPLEX_FULL; - } else if (lpa & LPA_10FULL) - phy->duplex = DUPLEX_FULL; + switch (phy->mode) { + case PHY_MODE_TBI: + epcr |= EPCR_TBI_MODE; + break; + case PHY_MODE_RTBI: + epcr |= EPCR_RTBI_MODE; + break; + case PHY_MODE_GMII: + epcr |= EPCR_GMII_MODE; + break; + case PHY_MODE_RGMII: + default: + epcr |= EPCR_RGMII_MODE; } - /* On non-aneg, we assume what we put in BMCR is the speed, - * though magic-aneg shouldn't prevent this case from occurring - */ + + phy_write(phy, MII_CIS8201_EPCR, epcr); return 0; } -#define MII_BASIC_FEATURES (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | \ - SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | \ - SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII) -#define MII_GBIT_FEATURES (MII_BASIC_FEATURES | \ - SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full) - -/* CIS8201 phy ops */ static struct mii_phy_ops cis8201_phy_ops = { - init:cis8201_init, - setup_aneg:genmii_setup_aneg, - setup_forced:genmii_setup_forced, - poll_link:genmii_poll_link, - read_link:cis8201_read_link -}; - -/* Generic implementation for most 10/100 PHYs */ -static struct mii_phy_ops generic_phy_ops = { - setup_aneg:genmii_setup_aneg, - setup_forced:genmii_setup_forced, - poll_link:genmii_poll_link, - read_link:genmii_read_link + .init = cis8201_init, + .setup_aneg = genmii_setup_aneg, + .setup_forced = genmii_setup_forced, + .poll_link = genmii_poll_link, + .read_link = genmii_read_link }; static struct mii_phy_def cis8201_phy_def = { - phy_id:0x000fc410, - phy_id_mask:0x000ffff0, - name:"CIS8201 Gigabit Ethernet", - features:MII_GBIT_FEATURES, - magic_aneg:0, - ops:&cis8201_phy_ops -}; - -static struct mii_phy_def genmii_phy_def = { - phy_id:0x00000000, - phy_id_mask:0x00000000, - name:"Generic MII", - features:MII_BASIC_FEATURES, - magic_aneg:0, - ops:&generic_phy_ops + .phy_id = 0x000fc410, + .phy_id_mask = 0x000ffff0, + .name = "CIS8201 Gigabit Ethernet", + .ops = &cis8201_phy_ops }; static struct mii_phy_def *mii_phy_table[] = { @@ -258,39 +294,60 @@ static struct mii_phy_def *mii_phy_table[] = { NULL }; -int mii_phy_probe(struct mii_phy *phy, int mii_id) +int mii_phy_probe(struct mii_phy *phy, int address) { - int rc; - u32 id; struct mii_phy_def *def; int i; + u32 id; - phy->autoneg = 0; + phy->autoneg = AUTONEG_DISABLE; phy->advertising = 0; - phy->mii_id = mii_id; - phy->speed = 0; - phy->duplex = 0; - phy->pause = 0; - - /* Take PHY out of isloate mode and reset it. */ - rc = reset_one_mii_phy(phy, mii_id); - if (rc) + phy->address = address; + phy->speed = SPEED_10; + phy->duplex = DUPLEX_HALF; + phy->pause = phy->asym_pause = 0; + + /* Take PHY out of isolate mode and reset it. */ + if (mii_reset_phy(phy)) return -ENODEV; /* Read ID and find matching entry */ - id = (phy_read(phy, MII_PHYSID1) << 16 | phy_read(phy, MII_PHYSID2)) - & 0xfffffff0; + id = (phy_read(phy, MII_PHYSID1) << 16) | phy_read(phy, MII_PHYSID2); for (i = 0; (def = mii_phy_table[i]) != NULL; i++) if ((id & def->phy_id_mask) == def->phy_id) break; /* Should never be NULL (we have a generic entry), but... */ - if (def == NULL) + if (!def) return -ENODEV; phy->def = def; + /* Determine PHY features if needed */ + phy->features = def->features; + if (!phy->features) { + u16 bmsr = phy_read(phy, MII_BMSR); + if (bmsr & BMSR_ANEGCAPABLE) + phy->features |= SUPPORTED_Autoneg; + if (bmsr & BMSR_10HALF) + phy->features |= SUPPORTED_10baseT_Half; + if (bmsr & BMSR_10FULL) + phy->features |= SUPPORTED_10baseT_Full; + if (bmsr & BMSR_100HALF) + phy->features |= SUPPORTED_100baseT_Half; + if (bmsr & BMSR_100FULL) + phy->features |= SUPPORTED_100baseT_Full; + if (bmsr & BMSR_ESTATEN) { + u16 esr = phy_read(phy, MII_ESTATUS); + if (esr & ESTATUS_1000_TFULL) + phy->features |= SUPPORTED_1000baseT_Full; + if (esr & ESTATUS_1000_THALF) + phy->features |= SUPPORTED_1000baseT_Half; + } + phy->features |= SUPPORTED_MII; + } + /* Setup default advertising */ - phy->advertising = def->features; + phy->advertising = phy->features; return 0; } diff --git a/drivers/net/ibm_emac/ibm_emac_phy.h b/drivers/net/ibm_emac/ibm_emac_phy.h index 61afbea..a70e0fe 100644 --- a/drivers/net/ibm_emac/ibm_emac_phy.h +++ b/drivers/net/ibm_emac/ibm_emac_phy.h @@ -1,65 +1,25 @@ - /* - * ibm_emac_phy.h - * + * drivers/net/ibm_emac/ibm_emac_phy.h * - * Benjamin Herrenschmidt <benh@kernel.crashing.org> - * February 2003 + * Driver for PowerPC 4xx on-chip ethernet controller, PHY support * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. + * Benjamin Herrenschmidt <benh@kernel.crashing.org> + * February 2003 * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. + * Minor additions by Eugene Surovegin <ebs@ebshome.net>, 2004 * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. * * This file basically duplicates sungem_phy.{c,h} with different PHYs * supported. I'm looking into merging that in a single mii layer more * flexible than mii.c */ -#ifndef _IBM_EMAC_PHY_H_ -#define _IBM_EMAC_PHY_H_ - -/* - * PHY mode settings - * Used for multi-mode capable PHYs - */ -#define PHY_MODE_NA 0 -#define PHY_MODE_MII 1 -#define PHY_MODE_RMII 2 -#define PHY_MODE_SMII 3 -#define PHY_MODE_RGMII 4 -#define PHY_MODE_TBI 5 -#define PHY_MODE_GMII 6 -#define PHY_MODE_RTBI 7 -#define PHY_MODE_SGMII 8 - -/* - * PHY specific registers/values - */ - -/* CIS8201 */ -#define MII_CIS8201_EPCR 0x17 -#define EPCR_MODE_MASK 0x3000 -#define EPCR_GMII_MODE 0x0000 -#define EPCR_RGMII_MODE 0x1000 -#define EPCR_TBI_MODE 0x2000 -#define EPCR_RTBI_MODE 0x3000 +#ifndef _IBM_OCP_PHY_H_ +#define _IBM_OCP_PHY_H_ struct mii_phy; @@ -77,7 +37,8 @@ struct mii_phy_ops { struct mii_phy_def { u32 phy_id; /* Concatenated ID1 << 16 | ID2 */ u32 phy_id_mask; /* Significant bits */ - u32 features; /* Ethtool SUPPORTED_* defines */ + u32 features; /* Ethtool SUPPORTED_* defines or + 0 for autodetect */ int magic_aneg; /* Autoneg does all speed test for us */ const char *name; const struct mii_phy_ops *ops; @@ -86,8 +47,11 @@ struct mii_phy_def { /* An instance of a PHY, partially borrowed from mii_if_info */ struct mii_phy { struct mii_phy_def *def; - int advertising; - int mii_id; + u32 advertising; /* Ethtool ADVERTISED_* defines */ + u32 features; /* Copied from mii_phy_def.features + or determined automaticaly */ + int address; /* PHY address */ + int mode; /* PHY mode */ /* 1: autoneg enabled, 0: disabled */ int autoneg; @@ -98,40 +62,19 @@ struct mii_phy { int speed; int duplex; int pause; - - /* PHY mode - if needed */ - int mode; + int asym_pause; /* Provided by host chip */ struct net_device *dev; - int (*mdio_read) (struct net_device * dev, int mii_id, int reg); - void (*mdio_write) (struct net_device * dev, int mii_id, int reg, + int (*mdio_read) (struct net_device * dev, int addr, int reg); + void (*mdio_write) (struct net_device * dev, int addr, int reg, int val); }; /* Pass in a struct mii_phy with dev, mdio_read and mdio_write * filled, the remaining fields will be filled on return */ -extern int mii_phy_probe(struct mii_phy *phy, int mii_id); - -static inline int __phy_read(struct mii_phy *phy, int id, int reg) -{ - return phy->mdio_read(phy->dev, id, reg); -} - -static inline void __phy_write(struct mii_phy *phy, int id, int reg, int val) -{ - phy->mdio_write(phy->dev, id, reg, val); -} - -static inline int phy_read(struct mii_phy *phy, int reg) -{ - return phy->mdio_read(phy->dev, phy->mii_id, reg); -} - -static inline void phy_write(struct mii_phy *phy, int reg, int val) -{ - phy->mdio_write(phy->dev, phy->mii_id, reg, val); -} +int mii_phy_probe(struct mii_phy *phy, int address); +int mii_reset_phy(struct mii_phy *phy); -#endif /* _IBM_EMAC_PHY_H_ */ +#endif /* _IBM_OCP_PHY_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_rgmii.c b/drivers/net/ibm_emac/ibm_emac_rgmii.c new file mode 100644 index 0000000..f0b1ffb --- /dev/null +++ b/drivers/net/ibm_emac/ibm_emac_rgmii.c @@ -0,0 +1,201 @@ +/* + * drivers/net/ibm_emac/ibm_emac_rgmii.c + * + * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support. + * + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> + * + * Based on original work by + * Matt Porter <mporter@kernel.crashing.org> + * Copyright 2004 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/ethtool.h> +#include <asm/io.h> + +#include "ibm_emac_core.h" +#include "ibm_emac_debug.h" + +/* RGMIIx_FER */ +#define RGMII_FER_MASK(idx) (0x7 << ((idx) * 4)) +#define RGMII_FER_RTBI(idx) (0x4 << ((idx) * 4)) +#define RGMII_FER_RGMII(idx) (0x5 << ((idx) * 4)) +#define RGMII_FER_TBI(idx) (0x6 << ((idx) * 4)) +#define RGMII_FER_GMII(idx) (0x7 << ((idx) * 4)) + +/* RGMIIx_SSR */ +#define RGMII_SSR_MASK(idx) (0x7 << ((idx) * 8)) +#define RGMII_SSR_100(idx) (0x2 << ((idx) * 8)) +#define RGMII_SSR_1000(idx) (0x4 << ((idx) * 8)) + +/* RGMII bridge supports only GMII/TBI and RGMII/RTBI PHYs */ +static inline int rgmii_valid_mode(int phy_mode) +{ + return phy_mode == PHY_MODE_GMII || + phy_mode == PHY_MODE_RGMII || + phy_mode == PHY_MODE_TBI || + phy_mode == PHY_MODE_RTBI; +} + +static inline const char *rgmii_mode_name(int mode) +{ + switch (mode) { + case PHY_MODE_RGMII: + return "RGMII"; + case PHY_MODE_TBI: + return "TBI"; + case PHY_MODE_GMII: + return "GMII"; + case PHY_MODE_RTBI: + return "RTBI"; + default: + BUG(); + } +} + +static inline u32 rgmii_mode_mask(int mode, int input) +{ + switch (mode) { + case PHY_MODE_RGMII: + return RGMII_FER_RGMII(input); + case PHY_MODE_TBI: + return RGMII_FER_TBI(input); + case PHY_MODE_GMII: + return RGMII_FER_GMII(input); + case PHY_MODE_RTBI: + return RGMII_FER_RTBI(input); + default: + BUG(); + } +} + +static int __init rgmii_init(struct ocp_device *ocpdev, int input, int mode) +{ + struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev); + struct rgmii_regs *p; + + RGMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, mode); + + if (!dev) { + dev = kzalloc(sizeof(struct ibm_ocp_rgmii), GFP_KERNEL); + if (!dev) { + printk(KERN_ERR + "rgmii%d: couldn't allocate device structure!\n", + ocpdev->def->index); + return -ENOMEM; + } + + p = (struct rgmii_regs *)ioremap(ocpdev->def->paddr, + sizeof(struct rgmii_regs)); + if (!p) { + printk(KERN_ERR + "rgmii%d: could not ioremap device registers!\n", + ocpdev->def->index); + kfree(dev); + return -ENOMEM; + } + + dev->base = p; + ocp_set_drvdata(ocpdev, dev); + + /* Disable all inputs by default */ + out_be32(&p->fer, 0); + } else + p = dev->base; + + /* Enable this input */ + out_be32(&p->fer, in_be32(&p->fer) | rgmii_mode_mask(mode, input)); + + printk(KERN_NOTICE "rgmii%d: input %d in %s mode\n", + ocpdev->def->index, input, rgmii_mode_name(mode)); + + ++dev->users; + return 0; +} + +int __init rgmii_attach(void *emac) +{ + struct ocp_enet_private *dev = emac; + struct ocp_func_emac_data *emacdata = dev->def->additions; + + /* Check if we need to attach to a RGMII */ + if (emacdata->rgmii_idx >= 0 && rgmii_valid_mode(emacdata->phy_mode)) { + dev->rgmii_input = emacdata->rgmii_mux; + dev->rgmii_dev = + ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_RGMII, + emacdata->rgmii_idx); + if (!dev->rgmii_dev) { + printk(KERN_ERR "emac%d: unknown rgmii%d!\n", + dev->def->index, emacdata->rgmii_idx); + return -ENODEV; + } + if (rgmii_init + (dev->rgmii_dev, dev->rgmii_input, emacdata->phy_mode)) { + printk(KERN_ERR + "emac%d: rgmii%d initialization failed!\n", + dev->def->index, emacdata->rgmii_idx); + return -ENODEV; + } + } + return 0; +} + +void rgmii_set_speed(struct ocp_device *ocpdev, int input, int speed) +{ + struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev); + u32 ssr = in_be32(&dev->base->ssr) & ~RGMII_SSR_MASK(input); + + RGMII_DBG("%d: speed(%d, %d)" NL, ocpdev->def->index, input, speed); + + if (speed == SPEED_1000) + ssr |= RGMII_SSR_1000(input); + else if (speed == SPEED_100) + ssr |= RGMII_SSR_100(input); + + out_be32(&dev->base->ssr, ssr); +} + +void __exit __rgmii_fini(struct ocp_device *ocpdev, int input) +{ + struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev); + BUG_ON(!dev || dev->users == 0); + + RGMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input); + + /* Disable this input */ + out_be32(&dev->base->fer, + in_be32(&dev->base->fer) & ~RGMII_FER_MASK(input)); + + if (!--dev->users) { + /* Free everything if this is the last user */ + ocp_set_drvdata(ocpdev, NULL); + iounmap((void *)dev->base); + kfree(dev); + } +} + +int __rgmii_get_regs_len(struct ocp_device *ocpdev) +{ + return sizeof(struct emac_ethtool_regs_subhdr) + + sizeof(struct rgmii_regs); +} + +void *rgmii_dump_regs(struct ocp_device *ocpdev, void *buf) +{ + struct ibm_ocp_rgmii *dev = ocp_get_drvdata(ocpdev); + struct emac_ethtool_regs_subhdr *hdr = buf; + struct rgmii_regs *regs = (struct rgmii_regs *)(hdr + 1); + + hdr->version = 0; + hdr->index = ocpdev->def->index; + memcpy_fromio(regs, dev->base, sizeof(struct rgmii_regs)); + return regs + 1; +} diff --git a/drivers/net/ibm_emac/ibm_emac_rgmii.h b/drivers/net/ibm_emac/ibm_emac_rgmii.h index 49f188f..a1ffb8a 100644 --- a/drivers/net/ibm_emac/ibm_emac_rgmii.h +++ b/drivers/net/ibm_emac/ibm_emac_rgmii.h @@ -1,5 +1,7 @@ /* - * Defines for the IBM RGMII bridge + * drivers/net/ibm_emac/ibm_emac_rgmii.c + * + * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support. * * Based on ocp_zmii.h/ibm_emac_zmii.h * Armin Kuster akuster@mvista.com @@ -7,6 +9,9 @@ * Copyright 2004 MontaVista Software, Inc. * Matt Porter <mporter@kernel.crashing.org> * + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> + * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your @@ -19,47 +24,42 @@ #include <linux/config.h> /* RGMII bridge */ -typedef struct rgmii_regs { +struct rgmii_regs { u32 fer; /* Function enable register */ u32 ssr; /* Speed select register */ -} rgmii_t; - -#define RGMII_INPUTS 4 +}; /* RGMII device */ struct ibm_ocp_rgmii { struct rgmii_regs *base; - int mode[RGMII_INPUTS]; int users; /* number of EMACs using this RGMII bridge */ }; -/* Fuctional Enable Reg */ -#define RGMII_FER_MASK(x) (0x00000007 << (4*x)) -#define RGMII_RTBI 0x00000004 -#define RGMII_RGMII 0x00000005 -#define RGMII_TBI 0x00000006 -#define RGMII_GMII 0x00000007 - -/* Speed Selection reg */ +#ifdef CONFIG_IBM_EMAC_RGMII +int rgmii_attach(void *emac) __init; -#define RGMII_SP2_100 0x00000002 -#define RGMII_SP2_1000 0x00000004 -#define RGMII_SP3_100 0x00000200 -#define RGMII_SP3_1000 0x00000400 +void __rgmii_fini(struct ocp_device *ocpdev, int input) __exit; +static inline void rgmii_fini(struct ocp_device *ocpdev, int input) +{ + if (ocpdev) + __rgmii_fini(ocpdev, input); +} -#define RGMII_MII2_SPDMASK 0x00000007 -#define RGMII_MII3_SPDMASK 0x00000700 +void rgmii_set_speed(struct ocp_device *ocpdev, int input, int speed); -#define RGMII_MII2_100MB RGMII_SP2_100 & ~RGMII_SP2_1000 -#define RGMII_MII2_1000MB RGMII_SP2_1000 & ~RGMII_SP2_100 -#define RGMII_MII2_10MB ~(RGMII_SP2_100 | RGMII_SP2_1000) -#define RGMII_MII3_100MB RGMII_SP3_100 & ~RGMII_SP3_1000 -#define RGMII_MII3_1000MB RGMII_SP3_1000 & ~RGMII_SP3_100 -#define RGMII_MII3_10MB ~(RGMII_SP3_100 | RGMII_SP3_1000) +int __rgmii_get_regs_len(struct ocp_device *ocpdev); +static inline int rgmii_get_regs_len(struct ocp_device *ocpdev) +{ + return ocpdev ? __rgmii_get_regs_len(ocpdev) : 0; +} -#define RTBI 0 -#define RGMII 1 -#define TBI 2 -#define GMII 3 +void *rgmii_dump_regs(struct ocp_device *ocpdev, void *buf); +#else +# define rgmii_attach(x) 0 +# define rgmii_fini(x,y) ((void)0) +# define rgmii_set_speed(x,y,z) ((void)0) +# define rgmii_get_regs_len(x) 0 +# define rgmii_dump_regs(x,buf) (buf) +#endif /* !CONFIG_IBM_EMAC_RGMII */ #endif /* _IBM_EMAC_RGMII_H_ */ diff --git a/drivers/net/ibm_emac/ibm_emac_tah.c b/drivers/net/ibm_emac/ibm_emac_tah.c new file mode 100644 index 0000000..af08afc --- /dev/null +++ b/drivers/net/ibm_emac/ibm_emac_tah.c @@ -0,0 +1,111 @@ +/* + * drivers/net/ibm_emac/ibm_emac_tah.c + * + * Driver for PowerPC 4xx on-chip ethernet controller, TAH support. + * + * Copyright 2004 MontaVista Software, Inc. + * Matt Porter <mporter@kernel.crashing.org> + * + * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/config.h> +#include <asm/io.h> + +#include "ibm_emac_core.h" + +static int __init tah_init(struct ocp_device *ocpdev) +{ + struct tah_regs *p; + + if (ocp_get_drvdata(ocpdev)) { + printk(KERN_ERR "tah%d: already in use!\n", ocpdev->def->index); + return -EBUSY; + } + + /* Initialize TAH and enable IPv4 checksum verification, no TSO yet */ + p = (struct tah_regs *)ioremap(ocpdev->def->paddr, sizeof(*p)); + if (!p) { + printk(KERN_ERR "tah%d: could not ioremap device registers!\n", + ocpdev->def->index); + return -ENOMEM; + } + ocp_set_drvdata(ocpdev, p); + __tah_reset(ocpdev); + + return 0; +} + +int __init tah_attach(void *emac) +{ + struct ocp_enet_private *dev = emac; + struct ocp_func_emac_data *emacdata = dev->def->additions; + + /* Check if we need to attach to a TAH */ + if (emacdata->tah_idx >= 0) { + dev->tah_dev = ocp_find_device(OCP_ANY_ID, OCP_FUNC_TAH, + emacdata->tah_idx); + if (!dev->tah_dev) { + printk(KERN_ERR "emac%d: unknown tah%d!\n", + dev->def->index, emacdata->tah_idx); + return -ENODEV; + } + if (tah_init(dev->tah_dev)) { + printk(KERN_ERR + "emac%d: tah%d initialization failed!\n", + dev->def->index, emacdata->tah_idx); + return -ENODEV; + } + } + return 0; +} + +void __exit __tah_fini(struct ocp_device *ocpdev) +{ + struct tah_regs *p = ocp_get_drvdata(ocpdev); + BUG_ON(!p); + ocp_set_drvdata(ocpdev, NULL); + iounmap((void *)p); +} + +void __tah_reset(struct ocp_device *ocpdev) +{ + struct tah_regs *p = ocp_get_drvdata(ocpdev); + int n; + + /* Reset TAH */ + out_be32(&p->mr, TAH_MR_SR); + n = 100; + while ((in_be32(&p->mr) & TAH_MR_SR) && n) + --n; + + if (unlikely(!n)) + printk(KERN_ERR "tah%d: reset timeout\n", ocpdev->def->index); + + /* 10KB TAH TX FIFO accomodates the max MTU of 9000 */ + out_be32(&p->mr, + TAH_MR_CVR | TAH_MR_ST_768 | TAH_MR_TFS_10KB | TAH_MR_DTFP | + TAH_MR_DIG); +} + +int __tah_get_regs_len(struct ocp_device *ocpdev) +{ + return sizeof(struct emac_ethtool_regs_subhdr) + + sizeof(struct tah_regs); +} + +void *tah_dump_regs(struct ocp_device *ocpdev, void *buf) +{ + struct tah_regs *dev = ocp_get_drvdata(ocpdev); + struct emac_ethtool_regs_subhdr *hdr = buf; + struct tah_regs *regs = (struct tah_regs *)(hdr + 1); + + hdr->version = 0; + hdr->index = ocpdev->def->index; + memcpy_fromio(regs, dev, sizeof(struct tah_regs)); + return regs + 1; +} diff --git a/drivers/net/ibm_emac/ibm_emac_tah.h b/drivers/net/ibm_emac/ibm_emac_tah.h index ecfc698..9299b5d 100644 --- a/drivers/net/ibm_emac/ibm_emac_tah.h +++ b/drivers/net/ibm_emac/ibm_emac_tah.h @@ -1,9 +1,13 @@ /* - * Defines for the IBM TAH + * drivers/net/ibm_emac/ibm_emac_tah.h + * + * Driver for PowerPC 4xx on-chip ethernet controller, TAH support. * * Copyright 2004 MontaVista Software, Inc. * Matt Porter <mporter@kernel.crashing.org> * + * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net> + * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your @@ -13,36 +17,72 @@ #ifndef _IBM_EMAC_TAH_H #define _IBM_EMAC_TAH_H +#include <linux/config.h> +#include <linux/init.h> +#include <asm/ocp.h> + /* TAH */ -typedef struct tah_regs { - u32 tah_revid; +struct tah_regs { + u32 revid; u32 pad[3]; - u32 tah_mr; - u32 tah_ssr0; - u32 tah_ssr1; - u32 tah_ssr2; - u32 tah_ssr3; - u32 tah_ssr4; - u32 tah_ssr5; - u32 tah_tsr; -} tah_t; + u32 mr; + u32 ssr0; + u32 ssr1; + u32 ssr2; + u32 ssr3; + u32 ssr4; + u32 ssr5; + u32 tsr; +}; /* TAH engine */ -#define TAH_MR_CVR 0x80000000 -#define TAH_MR_SR 0x40000000 -#define TAH_MR_ST_256 0x01000000 -#define TAH_MR_ST_512 0x02000000 -#define TAH_MR_ST_768 0x03000000 -#define TAH_MR_ST_1024 0x04000000 -#define TAH_MR_ST_1280 0x05000000 -#define TAH_MR_ST_1536 0x06000000 -#define TAH_MR_TFS_16KB 0x00000000 -#define TAH_MR_TFS_2KB 0x00200000 -#define TAH_MR_TFS_4KB 0x00400000 -#define TAH_MR_TFS_6KB 0x00600000 -#define TAH_MR_TFS_8KB 0x00800000 -#define TAH_MR_TFS_10KB 0x00a00000 -#define TAH_MR_DTFP 0x00100000 -#define TAH_MR_DIG 0x00080000 +#define TAH_MR_CVR 0x80000000 +#define TAH_MR_SR 0x40000000 +#define TAH_MR_ST_256 0x01000000 +#define TAH_MR_ST_512 0x02000000 +#define TAH_MR_ST_768 0x03000000 +#define TAH_MR_ST_1024 0x04000000 +#define TAH_MR_ST_1280 0x05000000 +#define TAH_MR_ST_1536 0x06000000 +#define TAH_MR_TFS_16KB 0x00000000 +#define TAH_MR_TFS_2KB 0x00200000 +#define TAH_MR_TFS_4KB 0x00400000 +#define TAH_MR_TFS_6KB 0x00600000 +#define TAH_MR_TFS_8KB 0x00800000 +#define TAH_MR_TFS_10KB 0x00a00000 +#define TAH_MR_DTFP 0x00100000 +#define TAH_MR_DIG 0x00080000 + +#ifdef CONFIG_IBM_EMAC_TAH +int tah_attach(void *emac) __init; + +void __tah_fini(struct ocp_device *ocpdev) __exit; +static inline void tah_fini(struct ocp_device *ocpdev) +{ + if (ocpdev) + __tah_fini(ocpdev); +} + +void __tah_reset(struct ocp_device *ocpdev); +static inline void tah_reset(struct ocp_device *ocpdev) +{ + if (ocpdev) + __tah_reset(ocpdev); +} + +int __tah_get_regs_len(struct ocp_device *ocpdev); +static inline int tah_get_regs_len(struct ocp_device *ocpdev) +{ + return ocpdev ? __tah_get_regs_len(ocpdev) : 0; +} + +void *tah_dump_regs(struct ocp_device *ocpdev, void *buf); +#else +# define tah_attach(x) 0 +# define tah_fini(x) ((void)0) +# define tah_reset(x) ((void)0) +# define tah_get_regs_len(x) 0 +# define tah_dump_regs(x,buf) (buf) +#endif /* !CONFIG_IBM_EMAC_TAH */ #endif /* _IBM_EMAC_TAH_H */ diff --git a/drivers/net/ibm_emac/ibm_emac_zmii.c b/drivers/net/ibm_emac/ibm_emac_zmii.c new file mode 100644 index 0000000..35c1185 --- /dev/null +++ b/drivers/net/ibm_emac/ibm_emac_zmii.c @@ -0,0 +1,255 @@ +/* + * drivers/net/ibm_emac/ibm_emac_zmii.c + * + * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support. + * + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> + * + * Based on original work by + * Armin Kuster <akuster@mvista.com> + * Copyright 2001 MontaVista Softare Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/ethtool.h> +#include <asm/io.h> + +#include "ibm_emac_core.h" +#include "ibm_emac_debug.h" + +/* ZMIIx_FER */ +#define ZMII_FER_MDI(idx) (0x80000000 >> ((idx) * 4)) +#define ZMII_FER_MDI_ALL (ZMII_FER_MDI(0) | ZMII_FER_MDI(1) | \ + ZMII_FER_MDI(2) | ZMII_FER_MDI(3)) + +#define ZMII_FER_SMII(idx) (0x40000000 >> ((idx) * 4)) +#define ZMII_FER_RMII(idx) (0x20000000 >> ((idx) * 4)) +#define ZMII_FER_MII(idx) (0x10000000 >> ((idx) * 4)) + +/* ZMIIx_SSR */ +#define ZMII_SSR_SCI(idx) (0x40000000 >> ((idx) * 4)) +#define ZMII_SSR_FSS(idx) (0x20000000 >> ((idx) * 4)) +#define ZMII_SSR_SP(idx) (0x10000000 >> ((idx) * 4)) + +/* ZMII only supports MII, RMII and SMII + * we also support autodetection for backward compatibility + */ +static inline int zmii_valid_mode(int mode) +{ + return mode == PHY_MODE_MII || + mode == PHY_MODE_RMII || + mode == PHY_MODE_SMII || + mode == PHY_MODE_NA; +} + +static inline const char *zmii_mode_name(int mode) +{ + switch (mode) { + case PHY_MODE_MII: + return "MII"; + case PHY_MODE_RMII: + return "RMII"; + case PHY_MODE_SMII: + return "SMII"; + default: + BUG(); + } +} + +static inline u32 zmii_mode_mask(int mode, int input) +{ + switch (mode) { + case PHY_MODE_MII: + return ZMII_FER_MII(input); + case PHY_MODE_RMII: + return ZMII_FER_RMII(input); + case PHY_MODE_SMII: + return ZMII_FER_SMII(input); + default: + return 0; + } +} + +static int __init zmii_init(struct ocp_device *ocpdev, int input, int *mode) +{ + struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev); + struct zmii_regs *p; + + ZMII_DBG("%d: init(%d, %d)" NL, ocpdev->def->index, input, *mode); + + if (!dev) { + dev = kzalloc(sizeof(struct ibm_ocp_zmii), GFP_KERNEL); + if (!dev) { + printk(KERN_ERR + "zmii%d: couldn't allocate device structure!\n", + ocpdev->def->index); + return -ENOMEM; + } + dev->mode = PHY_MODE_NA; + + p = (struct zmii_regs *)ioremap(ocpdev->def->paddr, + sizeof(struct zmii_regs)); + if (!p) { + printk(KERN_ERR + "zmii%d: could not ioremap device registers!\n", + ocpdev->def->index); + kfree(dev); + return -ENOMEM; + } + dev->base = p; + ocp_set_drvdata(ocpdev, dev); + + /* We may need FER value for autodetection later */ + dev->fer_save = in_be32(&p->fer); + + /* Disable all inputs by default */ + out_be32(&p->fer, 0); + } else + p = dev->base; + + if (!zmii_valid_mode(*mode)) { + /* Probably an EMAC connected to RGMII, + * but it still may need ZMII for MDIO + */ + goto out; + } + + /* Autodetect ZMII mode if not specified. + * This is only for backward compatibility with the old driver. + * Please, always specify PHY mode in your board port to avoid + * any surprises. + */ + if (dev->mode == PHY_MODE_NA) { + if (*mode == PHY_MODE_NA) { + u32 r = dev->fer_save; + + ZMII_DBG("%d: autodetecting mode, FER = 0x%08x" NL, + ocpdev->def->index, r); + + if (r & (ZMII_FER_MII(0) | ZMII_FER_MII(1))) + dev->mode = PHY_MODE_MII; + else if (r & (ZMII_FER_RMII(0) | ZMII_FER_RMII(1))) + dev->mode = PHY_MODE_RMII; + else + dev->mode = PHY_MODE_SMII; + } else + dev->mode = *mode; + + printk(KERN_NOTICE "zmii%d: bridge in %s mode\n", + ocpdev->def->index, zmii_mode_name(dev->mode)); + } else { + /* All inputs must use the same mode */ + if (*mode != PHY_MODE_NA && *mode != dev->mode) { + printk(KERN_ERR + "zmii%d: invalid mode %d specified for input %d\n", + ocpdev->def->index, *mode, input); + return -EINVAL; + } + } + + /* Report back correct PHY mode, + * it may be used during PHY initialization. + */ + *mode = dev->mode; + + /* Enable this input */ + out_be32(&p->fer, in_be32(&p->fer) | zmii_mode_mask(dev->mode, input)); + out: + ++dev->users; + return 0; +} + +int __init zmii_attach(void *emac) +{ + struct ocp_enet_private *dev = emac; + struct ocp_func_emac_data *emacdata = dev->def->additions; + + if (emacdata->zmii_idx >= 0) { + dev->zmii_input = emacdata->zmii_mux; + dev->zmii_dev = + ocp_find_device(OCP_VENDOR_IBM, OCP_FUNC_ZMII, + emacdata->zmii_idx); + if (!dev->zmii_dev) { + printk(KERN_ERR "emac%d: unknown zmii%d!\n", + dev->def->index, emacdata->zmii_idx); + return -ENODEV; + } + if (zmii_init + (dev->zmii_dev, dev->zmii_input, &emacdata->phy_mode)) { + printk(KERN_ERR + "emac%d: zmii%d initialization failed!\n", + dev->def->index, emacdata->zmii_idx); + return -ENODEV; + } + } + return 0; +} + +void __zmii_enable_mdio(struct ocp_device *ocpdev, int input) +{ + struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev); + u32 fer = in_be32(&dev->base->fer) & ~ZMII_FER_MDI_ALL; + + ZMII_DBG2("%d: mdio(%d)" NL, ocpdev->def->index, input); + + out_be32(&dev->base->fer, fer | ZMII_FER_MDI(input)); +} + +void __zmii_set_speed(struct ocp_device *ocpdev, int input, int speed) +{ + struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev); + u32 ssr = in_be32(&dev->base->ssr); + + ZMII_DBG("%d: speed(%d, %d)" NL, ocpdev->def->index, input, speed); + + if (speed == SPEED_100) + ssr |= ZMII_SSR_SP(input); + else + ssr &= ~ZMII_SSR_SP(input); + + out_be32(&dev->base->ssr, ssr); +} + +void __exit __zmii_fini(struct ocp_device *ocpdev, int input) +{ + struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev); + BUG_ON(!dev || dev->users == 0); + + ZMII_DBG("%d: fini(%d)" NL, ocpdev->def->index, input); + + /* Disable this input */ + out_be32(&dev->base->fer, + in_be32(&dev->base->fer) & ~zmii_mode_mask(dev->mode, input)); + + if (!--dev->users) { + /* Free everything if this is the last user */ + ocp_set_drvdata(ocpdev, NULL); + iounmap((void *)dev->base); + kfree(dev); + } +} + +int __zmii_get_regs_len(struct ocp_device *ocpdev) +{ + return sizeof(struct emac_ethtool_regs_subhdr) + + sizeof(struct zmii_regs); +} + +void *zmii_dump_regs(struct ocp_device *ocpdev, void *buf) +{ + struct ibm_ocp_zmii *dev = ocp_get_drvdata(ocpdev); + struct emac_ethtool_regs_subhdr *hdr = buf; + struct zmii_regs *regs = (struct zmii_regs *)(hdr + 1); + + hdr->version = 0; + hdr->index = ocpdev->def->index; + memcpy_fromio(regs, dev->base, sizeof(struct zmii_regs)); + return regs + 1; +} diff --git a/drivers/net/ibm_emac/ibm_emac_zmii.h b/drivers/net/ibm_emac/ibm_emac_zmii.h index 6f6cd2a..0bb2606 100644 --- a/drivers/net/ibm_emac/ibm_emac_zmii.h +++ b/drivers/net/ibm_emac/ibm_emac_zmii.h @@ -1,23 +1,27 @@ /* - * ocp_zmii.h + * drivers/net/ibm_emac/ibm_emac_zmii.h * - * Defines for the IBM ZMII bridge + * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support. * - * Armin Kuster akuster@mvista.com - * Dec, 2001 + * Copyright (c) 2004, 2005 Zultys Technologies. + * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net> * - * Copyright 2001 MontaVista Softare Inc. + * Based on original work by + * Armin Kuster <akuster@mvista.com> + * Copyright 2001 MontaVista Softare Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. + * */ - #ifndef _IBM_EMAC_ZMII_H_ #define _IBM_EMAC_ZMII_H_ #include <linux/config.h> +#include <linux/init.h> +#include <asm/ocp.h> /* ZMII bridge registers */ struct zmii_regs { @@ -26,68 +30,54 @@ struct zmii_regs { u32 smiirs; /* SMII status reg */ }; -#define ZMII_INPUTS 4 - /* ZMII device */ struct ibm_ocp_zmii { struct zmii_regs *base; - int mode[ZMII_INPUTS]; + int mode; /* subset of PHY_MODE_XXXX */ int users; /* number of EMACs using this ZMII bridge */ + u32 fer_save; /* FER value left by firmware */ }; -/* Fuctional Enable Reg */ - -#define ZMII_FER_MASK(x) (0xf0000000 >> (4*x)) - -#define ZMII_MDI0 0x80000000 -#define ZMII_SMII0 0x40000000 -#define ZMII_RMII0 0x20000000 -#define ZMII_MII0 0x10000000 -#define ZMII_MDI1 0x08000000 -#define ZMII_SMII1 0x04000000 -#define ZMII_RMII1 0x02000000 -#define ZMII_MII1 0x01000000 -#define ZMII_MDI2 0x00800000 -#define ZMII_SMII2 0x00400000 -#define ZMII_RMII2 0x00200000 -#define ZMII_MII2 0x00100000 -#define ZMII_MDI3 0x00080000 -#define ZMII_SMII3 0x00040000 -#define ZMII_RMII3 0x00020000 -#define ZMII_MII3 0x00010000 +#ifdef CONFIG_IBM_EMAC_ZMII +int zmii_attach(void *emac) __init; -/* Speed Selection reg */ +void __zmii_fini(struct ocp_device *ocpdev, int input) __exit; +static inline void zmii_fini(struct ocp_device *ocpdev, int input) +{ + if (ocpdev) + __zmii_fini(ocpdev, input); +} -#define ZMII_SCI0 0x40000000 -#define ZMII_FSS0 0x20000000 -#define ZMII_SP0 0x10000000 -#define ZMII_SCI1 0x04000000 -#define ZMII_FSS1 0x02000000 -#define ZMII_SP1 0x01000000 -#define ZMII_SCI2 0x00400000 -#define ZMII_FSS2 0x00200000 -#define ZMII_SP2 0x00100000 -#define ZMII_SCI3 0x00040000 -#define ZMII_FSS3 0x00020000 -#define ZMII_SP3 0x00010000 +void __zmii_enable_mdio(struct ocp_device *ocpdev, int input); +static inline void zmii_enable_mdio(struct ocp_device *ocpdev, int input) +{ + if (ocpdev) + __zmii_enable_mdio(ocpdev, input); +} -#define ZMII_MII0_100MB ZMII_SP0 -#define ZMII_MII0_10MB ~ZMII_SP0 -#define ZMII_MII1_100MB ZMII_SP1 -#define ZMII_MII1_10MB ~ZMII_SP1 -#define ZMII_MII2_100MB ZMII_SP2 -#define ZMII_MII2_10MB ~ZMII_SP2 -#define ZMII_MII3_100MB ZMII_SP3 -#define ZMII_MII3_10MB ~ZMII_SP3 +void __zmii_set_speed(struct ocp_device *ocpdev, int input, int speed); +static inline void zmii_set_speed(struct ocp_device *ocpdev, int input, + int speed) +{ + if (ocpdev) + __zmii_set_speed(ocpdev, input, speed); +} -/* SMII Status reg */ +int __zmii_get_regs_len(struct ocp_device *ocpdev); +static inline int zmii_get_regs_len(struct ocp_device *ocpdev) +{ + return ocpdev ? __zmii_get_regs_len(ocpdev) : 0; +} -#define ZMII_STS0 0xFF000000 /* EMAC0 smii status mask */ -#define ZMII_STS1 0x00FF0000 /* EMAC1 smii status mask */ +void *zmii_dump_regs(struct ocp_device *ocpdev, void *buf); -#define SMII 0 -#define RMII 1 -#define MII 2 -#define MDI 3 +#else +# define zmii_attach(x) 0 +# define zmii_fini(x,y) ((void)0) +# define zmii_enable_mdio(x,y) ((void)0) +# define zmii_set_speed(x,y,z) ((void)0) +# define zmii_get_regs_len(x) 0 +# define zmii_dump_regs(x,buf) (buf) +#endif /* !CONFIG_IBM_EMAC_ZMII */ #endif /* _IBM_EMAC_ZMII_H_ */ diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c index a2c4dd4..36da54a 100644 --- a/drivers/net/ibmveth.c +++ b/drivers/net/ibmveth.c @@ -96,7 +96,7 @@ static void ibmveth_proc_unregister_driver(void); static void ibmveth_proc_register_adapter(struct ibmveth_adapter *adapter); static void ibmveth_proc_unregister_adapter(struct ibmveth_adapter *adapter); static irqreturn_t ibmveth_interrupt(int irq, void *dev_instance, struct pt_regs *regs); -static inline void ibmveth_schedule_replenishing(struct ibmveth_adapter*); +static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter); #ifdef CONFIG_PROC_FS #define IBMVETH_PROC_DIR "net/ibmveth" @@ -181,6 +181,7 @@ static int ibmveth_alloc_buffer_pool(struct ibmveth_buff_pool *pool) atomic_set(&pool->available, 0); pool->producer_index = 0; pool->consumer_index = 0; + pool->active = 0; return 0; } @@ -236,7 +237,7 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc lpar_rc = h_add_logical_lan_buffer(adapter->vdev->unit_address, desc.desc); if(lpar_rc != H_Success) { - pool->free_map[free_index] = IBM_VETH_INVALID_MAP; + pool->free_map[free_index] = index; pool->skbuff[index] = NULL; pool->consumer_index--; dma_unmap_single(&adapter->vdev->dev, @@ -255,37 +256,19 @@ static void ibmveth_replenish_buffer_pool(struct ibmveth_adapter *adapter, struc atomic_add(buffers_added, &(pool->available)); } -/* check if replenishing is needed. */ -static inline int ibmveth_is_replenishing_needed(struct ibmveth_adapter *adapter) -{ - return ((atomic_read(&adapter->rx_buff_pool[0].available) < adapter->rx_buff_pool[0].threshold) || - (atomic_read(&adapter->rx_buff_pool[1].available) < adapter->rx_buff_pool[1].threshold) || - (atomic_read(&adapter->rx_buff_pool[2].available) < adapter->rx_buff_pool[2].threshold)); -} - -/* kick the replenish tasklet if we need replenishing and it isn't already running */ -static inline void ibmveth_schedule_replenishing(struct ibmveth_adapter *adapter) -{ - if(ibmveth_is_replenishing_needed(adapter) && - (atomic_dec_if_positive(&adapter->not_replenishing) == 0)) { - schedule_work(&adapter->replenish_task); - } -} - -/* replenish tasklet routine */ +/* replenish routine */ static void ibmveth_replenish_task(struct ibmveth_adapter *adapter) { + int i; + adapter->replenish_task_cycles++; - ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[0]); - ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[1]); - ibmveth_replenish_buffer_pool(adapter, &adapter->rx_buff_pool[2]); + for(i = 0; i < IbmVethNumBufferPools; i++) + if(adapter->rx_buff_pool[i].active) + ibmveth_replenish_buffer_pool(adapter, + &adapter->rx_buff_pool[i]); adapter->rx_no_buffer = *(u64*)(((char*)adapter->buffer_list_addr) + 4096 - 8); - - atomic_inc(&adapter->not_replenishing); - - ibmveth_schedule_replenishing(adapter); } /* empty and free ana buffer pool - also used to do cleanup in error paths */ @@ -293,10 +276,8 @@ static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibm { int i; - if(pool->free_map) { - kfree(pool->free_map); - pool->free_map = NULL; - } + kfree(pool->free_map); + pool->free_map = NULL; if(pool->skbuff && pool->dma_addr) { for(i = 0; i < pool->size; ++i) { @@ -321,6 +302,7 @@ static void ibmveth_free_buffer_pool(struct ibmveth_adapter *adapter, struct ibm kfree(pool->skbuff); pool->skbuff = NULL; } + pool->active = 0; } /* remove a buffer from a pool */ @@ -379,6 +361,12 @@ static void ibmveth_rxq_recycle_buffer(struct ibmveth_adapter *adapter) ibmveth_assert(pool < IbmVethNumBufferPools); ibmveth_assert(index < adapter->rx_buff_pool[pool].size); + if(!adapter->rx_buff_pool[pool].active) { + ibmveth_rxq_harvest_buffer(adapter); + ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[pool]); + return; + } + desc.desc = 0; desc.fields.valid = 1; desc.fields.length = adapter->rx_buff_pool[pool].buff_size; @@ -409,6 +397,8 @@ static inline void ibmveth_rxq_harvest_buffer(struct ibmveth_adapter *adapter) static void ibmveth_cleanup(struct ibmveth_adapter *adapter) { + int i; + if(adapter->buffer_list_addr != NULL) { if(!dma_mapping_error(adapter->buffer_list_dma)) { dma_unmap_single(&adapter->vdev->dev, @@ -443,26 +433,24 @@ static void ibmveth_cleanup(struct ibmveth_adapter *adapter) adapter->rx_queue.queue_addr = NULL; } - ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[0]); - ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[1]); - ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[2]); + for(i = 0; i<IbmVethNumBufferPools; i++) + ibmveth_free_buffer_pool(adapter, &adapter->rx_buff_pool[i]); } static int ibmveth_open(struct net_device *netdev) { struct ibmveth_adapter *adapter = netdev->priv; u64 mac_address = 0; - int rxq_entries; + int rxq_entries = 1; unsigned long lpar_rc; int rc; union ibmveth_buf_desc rxq_desc; + int i; ibmveth_debug_printk("open starting\n"); - rxq_entries = - adapter->rx_buff_pool[0].size + - adapter->rx_buff_pool[1].size + - adapter->rx_buff_pool[2].size + 1; + for(i = 0; i<IbmVethNumBufferPools; i++) + rxq_entries += adapter->rx_buff_pool[i].size; adapter->buffer_list_addr = (void*) get_zeroed_page(GFP_KERNEL); adapter->filter_list_addr = (void*) get_zeroed_page(GFP_KERNEL); @@ -502,14 +490,8 @@ static int ibmveth_open(struct net_device *netdev) adapter->rx_queue.num_slots = rxq_entries; adapter->rx_queue.toggle = 1; - if(ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[0]) || - ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[1]) || - ibmveth_alloc_buffer_pool(&adapter->rx_buff_pool[2])) - { - ibmveth_error_printk("unable to allocate buffer pools\n"); - ibmveth_cleanup(adapter); - return -ENOMEM; - } + /* call change_mtu to init the buffer pools based in initial mtu */ + ibmveth_change_mtu(netdev, netdev->mtu); memcpy(&mac_address, netdev->dev_addr, netdev->addr_len); mac_address = mac_address >> 16; @@ -552,10 +534,10 @@ static int ibmveth_open(struct net_device *netdev) return rc; } - netif_start_queue(netdev); + ibmveth_debug_printk("initial replenish cycle\n"); + ibmveth_replenish_task(adapter); - ibmveth_debug_printk("scheduling initial replenish cycle\n"); - ibmveth_schedule_replenishing(adapter); + netif_start_queue(netdev); ibmveth_debug_printk("open complete\n"); @@ -573,9 +555,6 @@ static int ibmveth_close(struct net_device *netdev) free_irq(netdev->irq, netdev); - cancel_delayed_work(&adapter->replenish_task); - flush_scheduled_work(); - do { lpar_rc = h_free_logical_lan(adapter->vdev->unit_address); } while (H_isLongBusy(lpar_rc) || (lpar_rc == H_Busy)); @@ -640,12 +619,18 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) unsigned long lpar_rc; int nfrags = 0, curfrag; unsigned long correlator; + unsigned long flags; unsigned int retry_count; + unsigned int tx_dropped = 0; + unsigned int tx_bytes = 0; + unsigned int tx_packets = 0; + unsigned int tx_send_failed = 0; + unsigned int tx_map_failed = 0; + if ((skb_shinfo(skb)->nr_frags + 1) > IbmVethMaxSendFrags) { - adapter->stats.tx_dropped++; - dev_kfree_skb(skb); - return 0; + tx_dropped++; + goto out; } memset(&desc, 0, sizeof(desc)); @@ -664,10 +649,9 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) if(dma_mapping_error(desc[0].fields.address)) { ibmveth_error_printk("tx: unable to map initial fragment\n"); - adapter->tx_map_failed++; - adapter->stats.tx_dropped++; - dev_kfree_skb(skb); - return 0; + tx_map_failed++; + tx_dropped++; + goto out; } curfrag = nfrags; @@ -684,8 +668,8 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) if(dma_mapping_error(desc[curfrag+1].fields.address)) { ibmveth_error_printk("tx: unable to map fragment %d\n", curfrag); - adapter->tx_map_failed++; - adapter->stats.tx_dropped++; + tx_map_failed++; + tx_dropped++; /* Free all the mappings we just created */ while(curfrag < nfrags) { dma_unmap_single(&adapter->vdev->dev, @@ -694,8 +678,7 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) DMA_TO_DEVICE); curfrag++; } - dev_kfree_skb(skb); - return 0; + goto out; } } @@ -720,11 +703,12 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) ibmveth_error_printk("tx: desc[%i] valid=%d, len=%d, address=0x%d\n", i, desc[i].fields.valid, desc[i].fields.length, desc[i].fields.address); } - adapter->tx_send_failed++; - adapter->stats.tx_dropped++; + tx_send_failed++; + tx_dropped++; } else { - adapter->stats.tx_packets++; - adapter->stats.tx_bytes += skb->len; + tx_packets++; + tx_bytes += skb->len; + netdev->trans_start = jiffies; } do { @@ -733,6 +717,14 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev) desc[nfrags].fields.length, DMA_TO_DEVICE); } while(--nfrags >= 0); +out: spin_lock_irqsave(&adapter->stats_lock, flags); + adapter->stats.tx_dropped += tx_dropped; + adapter->stats.tx_bytes += tx_bytes; + adapter->stats.tx_packets += tx_packets; + adapter->tx_send_failed += tx_send_failed; + adapter->tx_map_failed += tx_map_failed; + spin_unlock_irqrestore(&adapter->stats_lock, flags); + dev_kfree_skb(skb); return 0; } @@ -776,13 +768,14 @@ static int ibmveth_poll(struct net_device *netdev, int *budget) adapter->stats.rx_packets++; adapter->stats.rx_bytes += length; frames_processed++; + netdev->last_rx = jiffies; } } else { more_work = 0; } } while(more_work && (frames_processed < max_frames_to_process)); - ibmveth_schedule_replenishing(adapter); + ibmveth_replenish_task(adapter); if(more_work) { /* more work to do - return that we are not done yet */ @@ -883,17 +876,54 @@ static void ibmveth_set_multicast_list(struct net_device *netdev) static int ibmveth_change_mtu(struct net_device *dev, int new_mtu) { - if ((new_mtu < 68) || (new_mtu > (1<<20))) + struct ibmveth_adapter *adapter = dev->priv; + int i; + int prev_smaller = 1; + + if ((new_mtu < 68) || + (new_mtu > (pool_size[IbmVethNumBufferPools-1]) - IBMVETH_BUFF_OH)) return -EINVAL; + + for(i = 0; i<IbmVethNumBufferPools; i++) { + int activate = 0; + if (new_mtu > (pool_size[i] - IBMVETH_BUFF_OH)) { + activate = 1; + prev_smaller= 1; + } else { + if (prev_smaller) + activate = 1; + prev_smaller= 0; + } + + if (activate && !adapter->rx_buff_pool[i].active) { + struct ibmveth_buff_pool *pool = + &adapter->rx_buff_pool[i]; + if(ibmveth_alloc_buffer_pool(pool)) { + ibmveth_error_printk("unable to alloc pool\n"); + return -ENOMEM; + } + adapter->rx_buff_pool[i].active = 1; + } else if (!activate && adapter->rx_buff_pool[i].active) { + adapter->rx_buff_pool[i].active = 0; + h_free_logical_lan_buffer(adapter->vdev->unit_address, + (u64)pool_size[i]); + } + + } + + /* kick the interrupt handler so that the new buffer pools get + replenished or deallocated */ + ibmveth_interrupt(dev->irq, dev, NULL); + dev->mtu = new_mtu; return 0; } static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_id *id) { - int rc; + int rc, i; struct net_device *netdev; - struct ibmveth_adapter *adapter; + struct ibmveth_adapter *adapter = NULL; unsigned char *mac_addr_p; unsigned int *mcastFilterSize_p; @@ -960,23 +990,21 @@ static int __devinit ibmveth_probe(struct vio_dev *dev, const struct vio_device_ netdev->ethtool_ops = &netdev_ethtool_ops; netdev->change_mtu = ibmveth_change_mtu; SET_NETDEV_DEV(netdev, &dev->dev); + netdev->features |= NETIF_F_LLTX; + spin_lock_init(&adapter->stats_lock); memcpy(&netdev->dev_addr, &adapter->mac_addr, netdev->addr_len); - ibmveth_init_buffer_pool(&adapter->rx_buff_pool[0], 0, IbmVethPool0DftCnt, IbmVethPool0DftSize); - ibmveth_init_buffer_pool(&adapter->rx_buff_pool[1], 1, IbmVethPool1DftCnt, IbmVethPool1DftSize); - ibmveth_init_buffer_pool(&adapter->rx_buff_pool[2], 2, IbmVethPool2DftCnt, IbmVethPool2DftSize); + for(i = 0; i<IbmVethNumBufferPools; i++) + ibmveth_init_buffer_pool(&adapter->rx_buff_pool[i], i, + pool_count[i], pool_size[i]); ibmveth_debug_printk("adapter @ 0x%p\n", adapter); - INIT_WORK(&adapter->replenish_task, (void*)ibmveth_replenish_task, (void*)adapter); - adapter->buffer_list_dma = DMA_ERROR_CODE; adapter->filter_list_dma = DMA_ERROR_CODE; adapter->rx_queue.queue_dma = DMA_ERROR_CODE; - atomic_set(&adapter->not_replenishing, 1); - ibmveth_debug_printk("registering netdev...\n"); rc = register_netdev(netdev); diff --git a/drivers/net/ibmveth.h b/drivers/net/ibmveth.h index 51a470d..46919a8 100644 --- a/drivers/net/ibmveth.h +++ b/drivers/net/ibmveth.h @@ -49,6 +49,7 @@ #define H_SEND_LOGICAL_LAN 0x120 #define H_MULTICAST_CTRL 0x130 #define H_CHANGE_LOGICAL_LAN_MAC 0x14C +#define H_FREE_LOGICAL_LAN_BUFFER 0x1D4 /* hcall macros */ #define h_register_logical_lan(ua, buflst, rxq, fltlst, mac) \ @@ -69,13 +70,15 @@ #define h_change_logical_lan_mac(ua, mac) \ plpar_hcall_norets(H_CHANGE_LOGICAL_LAN_MAC, ua, mac) -#define IbmVethNumBufferPools 3 -#define IbmVethPool0DftSize (1024 * 2) -#define IbmVethPool1DftSize (1024 * 4) -#define IbmVethPool2DftSize (1024 * 10) -#define IbmVethPool0DftCnt 256 -#define IbmVethPool1DftCnt 256 -#define IbmVethPool2DftCnt 256 +#define h_free_logical_lan_buffer(ua, bufsize) \ + plpar_hcall_norets(H_FREE_LOGICAL_LAN_BUFFER, ua, bufsize) + +#define IbmVethNumBufferPools 5 +#define IBMVETH_BUFF_OH 22 /* Overhead: 14 ethernet header + 8 opaque handle */ + +/* pool_size should be sorted */ +static int pool_size[] = { 512, 1024 * 2, 1024 * 16, 1024 * 32, 1024 * 64 }; +static int pool_count[] = { 256, 768, 256, 256, 256 }; #define IBM_VETH_INVALID_MAP ((u16)0xffff) @@ -90,6 +93,7 @@ struct ibmveth_buff_pool { u16 *free_map; dma_addr_t *dma_addr; struct sk_buff **skbuff; + int active; }; struct ibmveth_rx_q { @@ -114,10 +118,6 @@ struct ibmveth_adapter { dma_addr_t filter_list_dma; struct ibmveth_buff_pool rx_buff_pool[IbmVethNumBufferPools]; struct ibmveth_rx_q rx_queue; - atomic_t not_replenishing; - - /* helper tasks */ - struct work_struct replenish_task; /* adapter specific stats */ u64 replenish_task_cycles; @@ -131,6 +131,7 @@ struct ibmveth_adapter { u64 tx_linearize_failed; u64 tx_map_failed; u64 tx_send_failed; + spinlock_t stats_lock; }; struct ibmveth_buf_desc_fields { diff --git a/drivers/net/irda/donauboe.c b/drivers/net/irda/donauboe.c index 0a08c53..0282771 100644 --- a/drivers/net/irda/donauboe.c +++ b/drivers/net/irda/donauboe.c @@ -1695,11 +1695,9 @@ toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid) freebufs: for (i = 0; i < TX_SLOTS; ++i) - if (self->tx_bufs[i]) - kfree (self->tx_bufs[i]); + kfree (self->tx_bufs[i]); for (i = 0; i < RX_SLOTS; ++i) - if (self->rx_bufs[i]) - kfree (self->rx_bufs[i]); + kfree (self->rx_bufs[i]); kfree(self->ringbuf); freeregion: diff --git a/drivers/net/irda/irda-usb.c b/drivers/net/irda/irda-usb.c index 6c766fd..c22c051 100644 --- a/drivers/net/irda/irda-usb.c +++ b/drivers/net/irda/irda-usb.c @@ -1168,10 +1168,8 @@ static inline void irda_usb_close(struct irda_usb_cb *self) unregister_netdev(self->netdev); /* Remove the speed buffer */ - if (self->speed_buff != NULL) { - kfree(self->speed_buff); - self->speed_buff = NULL; - } + kfree(self->speed_buff); + self->speed_buff = NULL; } /********************** USB CONFIG SUBROUTINES **********************/ diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c index 5971315..3d016a4 100644 --- a/drivers/net/irda/irport.c +++ b/drivers/net/irda/irport.c @@ -235,8 +235,7 @@ static int irport_close(struct irport_cb *self) __FUNCTION__, self->io.sir_base); release_region(self->io.sir_base, self->io.sir_ext); - if (self->tx_buff.head) - kfree(self->tx_buff.head); + kfree(self->tx_buff.head); if (self->rx_buff.skb) kfree_skb(self->rx_buff.skb); diff --git a/drivers/net/irda/sir_dev.c b/drivers/net/irda/sir_dev.c index efc5a88..df22b8b 100644 --- a/drivers/net/irda/sir_dev.c +++ b/drivers/net/irda/sir_dev.c @@ -490,8 +490,7 @@ static void sirdev_free_buffers(struct sir_dev *dev) { if (dev->rx_buff.skb) kfree_skb(dev->rx_buff.skb); - if (dev->tx_buff.head) - kfree(dev->tx_buff.head); + kfree(dev->tx_buff.head); dev->rx_buff.head = dev->tx_buff.head = NULL; dev->rx_buff.skb = NULL; } diff --git a/drivers/net/irda/vlsi_ir.c b/drivers/net/irda/vlsi_ir.c index 651c5a6..a9f49f0 100644 --- a/drivers/net/irda/vlsi_ir.c +++ b/drivers/net/irda/vlsi_ir.c @@ -473,8 +473,7 @@ static int vlsi_free_ring(struct vlsi_ring *r) rd_set_addr_status(rd, 0, 0); if (busaddr) pci_unmap_single(r->pdev, busaddr, r->len, r->dir); - if (rd->buf) - kfree(rd->buf); + kfree(rd->buf); } kfree(r); return 0; diff --git a/drivers/net/mace.c b/drivers/net/mace.c index 81d0a26..09b1e7b 100644 --- a/drivers/net/mace.c +++ b/drivers/net/mace.c @@ -1035,10 +1035,8 @@ static void __exit mace_cleanup(void) { macio_unregister_driver(&mace_driver); - if (dummy_buf) { - kfree(dummy_buf); - dummy_buf = NULL; - } + kfree(dummy_buf); + dummy_buf = NULL; } MODULE_AUTHOR("Paul Mackerras"); diff --git a/drivers/net/ne2k-pci.c b/drivers/net/ne2k-pci.c index e531a4e..d11821d 100644 --- a/drivers/net/ne2k-pci.c +++ b/drivers/net/ne2k-pci.c @@ -675,7 +675,6 @@ static int ne2k_pci_resume (struct pci_dev *pdev) pci_set_power_state(pdev, 0); pci_restore_state(pdev); pci_enable_device(pdev); - pci_set_master(pdev); NS8390_init(dev, 1); netif_device_attach(dev); diff --git a/drivers/net/ni65.c b/drivers/net/ni65.c index 925d1df..bb42ff2 100644 --- a/drivers/net/ni65.c +++ b/drivers/net/ni65.c @@ -696,8 +696,7 @@ static void ni65_free_buffer(struct priv *p) return; for(i=0;i<TMDNUM;i++) { - if(p->tmdbounce[i]) - kfree(p->tmdbounce[i]); + kfree(p->tmdbounce[i]); #ifdef XMT_VIA_SKB if(p->tmd_skb[i]) dev_kfree_skb(p->tmd_skb[i]); @@ -710,12 +709,10 @@ static void ni65_free_buffer(struct priv *p) if(p->recv_skb[i]) dev_kfree_skb(p->recv_skb[i]); #else - if(p->recvbounce[i]) - kfree(p->recvbounce[i]); + kfree(p->recvbounce[i]); #endif } - if(p->self) - kfree(p->self); + kfree(p->self); } diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c index 9f22d138..818c185 100644 --- a/drivers/net/pcmcia/pcnet_cs.c +++ b/drivers/net/pcmcia/pcnet_cs.c @@ -1020,6 +1020,12 @@ static void set_misc_reg(struct net_device *dev) } else { outb(full_duplex ? 4 : 0, nic_base + DLINK_DIAG); } + } else if (info->flags & IS_DL10019) { + /* Advertise 100F, 100H, 10F, 10H */ + mdio_write(nic_base + DLINK_GPIO, info->eth_phy, 4, 0x01e1); + /* Restart MII autonegotiation */ + mdio_write(nic_base + DLINK_GPIO, info->eth_phy, 0, 0x0000); + mdio_write(nic_base + DLINK_GPIO, info->eth_phy, 0, 0x1200); } } diff --git a/drivers/net/rrunner.c b/drivers/net/rrunner.c index ec1a18d1..19c2df9 100644 --- a/drivers/net/rrunner.c +++ b/drivers/net/rrunner.c @@ -1710,10 +1710,8 @@ static int rr_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) error = -EFAULT; } wf_out: - if (oldimage) - kfree(oldimage); - if (image) - kfree(image); + kfree(oldimage); + kfree(image); return error; case SIOCRRID: diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 62d5041..3f5e93a 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -705,8 +705,7 @@ static void free_shared_mem(struct s2io_nic *nic) } kfree(mac_control->rings[i].ba[j]); } - if (mac_control->rings[i].ba) - kfree(mac_control->rings[i].ba); + kfree(mac_control->rings[i].ba); } #endif diff --git a/drivers/net/saa9730.c b/drivers/net/saa9730.c index fd01670..110e777 100644 --- a/drivers/net/saa9730.c +++ b/drivers/net/saa9730.c @@ -997,10 +997,7 @@ static void __devexit saa9730_remove_one(struct pci_dev *pdev) if (dev) { unregister_netdev(dev); - - if (dev->priv) - kfree(dev->priv); - + kfree(dev->priv); free_netdev(dev); pci_release_regions(pdev); pci_disable_device(pdev); @@ -1096,8 +1093,7 @@ static int lan_saa9730_init(struct net_device *dev, int ioaddr, int irq) return 0; out: - if (dev->priv) - kfree(dev->priv); + kfree(dev->priv); return ret; } diff --git a/drivers/net/sis190.c b/drivers/net/sis190.c index 92f7552..478791e 100644 --- a/drivers/net/sis190.c +++ b/drivers/net/sis190.c @@ -842,7 +842,7 @@ static void sis190_set_rx_mode(struct net_device *dev) for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count; i++, mclist = mclist->next) { int bit_nr = - ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26; + ether_crc(ETH_ALEN, mclist->dmi_addr) & 0x3f; mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); rx_mode |= AcceptMulticast; } diff --git a/drivers/net/sis900.c b/drivers/net/sis900.c index 23b713c..1d4d886 100644 --- a/drivers/net/sis900.c +++ b/drivers/net/sis900.c @@ -1696,15 +1696,20 @@ static int sis900_rx(struct net_device *net_dev) long ioaddr = net_dev->base_addr; unsigned int entry = sis_priv->cur_rx % NUM_RX_DESC; u32 rx_status = sis_priv->rx_ring[entry].cmdsts; + int rx_work_limit; if (netif_msg_rx_status(sis_priv)) printk(KERN_DEBUG "sis900_rx, cur_rx:%4.4d, dirty_rx:%4.4d " "status:0x%8.8x\n", sis_priv->cur_rx, sis_priv->dirty_rx, rx_status); + rx_work_limit = sis_priv->dirty_rx + NUM_RX_DESC - sis_priv->cur_rx; while (rx_status & OWN) { unsigned int rx_size; + if (--rx_work_limit < 0) + break; + rx_size = (rx_status & DSIZE) - CRC_SIZE; if (rx_status & (ABORT|OVERRUN|TOOLONG|RUNT|RXISERR|CRCERR|FAERR)) { @@ -1732,9 +1737,11 @@ static int sis900_rx(struct net_device *net_dev) we are working on NULL sk_buff :-( */ if (sis_priv->rx_skbuff[entry] == NULL) { if (netif_msg_rx_err(sis_priv)) - printk(KERN_INFO "%s: NULL pointer " - "encountered in Rx ring, skipping\n", - net_dev->name); + printk(KERN_WARNING "%s: NULL pointer " + "encountered in Rx ring\n" + "cur_rx:%4.4d, dirty_rx:%4.4d\n", + net_dev->name, sis_priv->cur_rx, + sis_priv->dirty_rx); break; } @@ -1770,6 +1777,7 @@ static int sis900_rx(struct net_device *net_dev) sis_priv->rx_ring[entry].cmdsts = 0; sis_priv->rx_ring[entry].bufptr = 0; sis_priv->stats.rx_dropped++; + sis_priv->cur_rx++; break; } skb->dev = net_dev; @@ -1787,7 +1795,7 @@ static int sis900_rx(struct net_device *net_dev) /* refill the Rx buffer, what if the rate of refilling is slower * than consuming ?? */ - for (;sis_priv->cur_rx - sis_priv->dirty_rx > 0; sis_priv->dirty_rx++) { + for (; sis_priv->cur_rx != sis_priv->dirty_rx; sis_priv->dirty_rx++) { struct sk_buff *skb; entry = sis_priv->dirty_rx % NUM_RX_DESC; diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c index 0ddaa61..c573bb3 100644 --- a/drivers/net/smc91x.c +++ b/drivers/net/smc91x.c @@ -1983,6 +1983,10 @@ static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr) if (lp->version >= (CHIP_91100 << 4)) smc_phy_detect(dev); + /* then shut everything down to save power */ + smc_shutdown(dev); + smc_phy_powerdown(dev); + /* Set default parameters */ lp->msg_enable = NETIF_MSG_LINK; lp->ctl_rfduplx = 0; diff --git a/drivers/net/starfire.c b/drivers/net/starfire.c index efdb179..38b2b0a 100644 --- a/drivers/net/starfire.c +++ b/drivers/net/starfire.c @@ -1091,8 +1091,10 @@ static int netdev_open(struct net_device *dev) rx_ring_size = sizeof(struct starfire_rx_desc) * RX_RING_SIZE; np->queue_mem_size = tx_done_q_size + rx_done_q_size + tx_ring_size + rx_ring_size; np->queue_mem = pci_alloc_consistent(np->pci_dev, np->queue_mem_size, &np->queue_mem_dma); - if (np->queue_mem == 0) + if (np->queue_mem == NULL) { + free_irq(dev->irq, dev); return -ENOMEM; + } np->tx_done_q = np->queue_mem; np->tx_done_q_dma = np->queue_mem_dma; diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c index 5de0554..0ab9c38 100644 --- a/drivers/net/sundance.c +++ b/drivers/net/sundance.c @@ -80,7 +80,7 @@ I/O access could affect performance in ARM-based system - Add Linux software VLAN support - Version LK1.08 (D-Link): + Version LK1.08 (Philippe De Muyter phdm@macqel.be): - Fix bug of custom mac address (StationAddr register only accept word write) @@ -91,11 +91,14 @@ Version LK1.09a (ICPlus): - Add the delay time in reading the contents of EEPROM + Version LK1.10 (Philippe De Muyter phdm@macqel.be): + - Make 'unblock interface after Tx underrun' work + */ #define DRV_NAME "sundance" -#define DRV_VERSION "1.01+LK1.09a" -#define DRV_RELDATE "10-Jul-2003" +#define DRV_VERSION "1.01+LK1.10" +#define DRV_RELDATE "28-Oct-2005" /* The user-configurable values. @@ -263,8 +266,10 @@ IV. Notes IVb. References The Sundance ST201 datasheet, preliminary version. -http://cesdis.gsfc.nasa.gov/linux/misc/100mbps.html -http://cesdis.gsfc.nasa.gov/linux/misc/NWay.html +The Kendin KS8723 datasheet, preliminary version. +The ICplus IP100 datasheet, preliminary version. +http://www.scyld.com/expert/100mbps.html +http://www.scyld.com/expert/NWay.html IVc. Errata @@ -500,6 +505,25 @@ static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); static int netdev_close(struct net_device *dev); static struct ethtool_ops ethtool_ops; +static void sundance_reset(struct net_device *dev, unsigned long reset_cmd) +{ + struct netdev_private *np = netdev_priv(dev); + void __iomem *ioaddr = np->base + ASICCtrl; + int countdown; + + /* ST201 documentation states ASICCtrl is a 32bit register */ + iowrite32 (reset_cmd | ioread32 (ioaddr), ioaddr); + /* ST201 documentation states reset can take up to 1 ms */ + countdown = 10 + 1; + while (ioread32 (ioaddr) & (ResetBusy << 16)) { + if (--countdown == 0) { + printk(KERN_WARNING "%s : reset not completed !!\n", dev->name); + break; + } + udelay(100); + } +} + static int __devinit sundance_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent) { @@ -1190,23 +1214,33 @@ static irqreturn_t intr_handler(int irq, void *dev_instance, struct pt_regs *rgs ("%s: Transmit status is %2.2x.\n", dev->name, tx_status); if (tx_status & 0x1e) { + if (netif_msg_tx_err(np)) + printk("%s: Transmit error status %4.4x.\n", + dev->name, tx_status); np->stats.tx_errors++; if (tx_status & 0x10) np->stats.tx_fifo_errors++; if (tx_status & 0x08) np->stats.collisions++; + if (tx_status & 0x04) + np->stats.tx_fifo_errors++; if (tx_status & 0x02) np->stats.tx_window_errors++; - /* This reset has not been verified!. */ - if (tx_status & 0x10) { /* Reset the Tx. */ - np->stats.tx_fifo_errors++; - spin_lock(&np->lock); - reset_tx(dev); - spin_unlock(&np->lock); + /* + ** This reset has been verified on + ** DFE-580TX boards ! phdm@macqel.be. + */ + if (tx_status & 0x10) { /* TxUnderrun */ + unsigned short txthreshold; + + txthreshold = ioread16 (ioaddr + TxStartThresh); + /* Restart Tx FIFO and transmitter */ + sundance_reset(dev, (NetworkReset|FIFOReset|TxReset) << 16); + iowrite16 (txthreshold, ioaddr + TxStartThresh); + /* No need to reset the Tx pointer here */ } - if (tx_status & 0x1e) /* Restart the Tx. */ - iowrite16 (TxEnable, - ioaddr + MACCtrl1); + /* Restart the Tx. */ + iowrite16 (TxEnable, ioaddr + MACCtrl1); } /* Yup, this is a documentation bug. It cost me *hours*. */ iowrite16 (0, ioaddr + TxStatus); diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index 1802c3b..1828a6b 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -37,6 +37,7 @@ #include <linux/tcp.h> #include <linux/workqueue.h> #include <linux/prefetch.h> +#include <linux/dma-mapping.h> #include <net/checksum.h> @@ -67,8 +68,8 @@ #define DRV_MODULE_NAME "tg3" #define PFX DRV_MODULE_NAME ": " -#define DRV_MODULE_VERSION "3.42" -#define DRV_MODULE_RELDATE "Oct 3, 2005" +#define DRV_MODULE_VERSION "3.43" +#define DRV_MODULE_RELDATE "Oct 24, 2005" #define TG3_DEF_MAC_MODE 0 #define TG3_DEF_RX_MODE 0 @@ -219,6 +220,10 @@ static struct pci_device_id tg3_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5753F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, + { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, + { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715, + PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, { PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780S, @@ -466,6 +471,15 @@ static void tg3_write_mem(struct tg3 *tp, u32 off, u32 val) spin_unlock_irqrestore(&tp->indirect_lock, flags); } +static void tg3_write_mem_fast(struct tg3 *tp, u32 off, u32 val) +{ + /* If no workaround is needed, write to mem space directly */ + if (tp->write32 != tg3_write_indirect_reg32) + tw32(NIC_SRAM_WIN_BASE + off, val); + else + tg3_write_mem(tp, off, val); +} + static void tg3_read_mem(struct tg3 *tp, u32 off, u32 *val) { unsigned long flags; @@ -570,7 +584,7 @@ static void tg3_switch_clocks(struct tg3 *tp) u32 clock_ctrl = tr32(TG3PCI_CLOCK_CTRL); u32 orig_clock_ctrl; - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) return; orig_clock_ctrl = clock_ctrl; @@ -1210,7 +1224,7 @@ static int tg3_set_power_state(struct tg3 *tp, int state) CLOCK_CTRL_ALTCLK | CLOCK_CTRL_PWRDOWN_PLL133); udelay(40); - } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) { + } else if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) { /* do nothing */ } else if (!((tp->tg3_flags2 & TG3_FLG2_5750_PLUS) && (tp->tg3_flags & TG3_FLAG_ENABLE_ASF))) { @@ -3712,14 +3726,14 @@ static inline void tg3_set_mtu(struct net_device *dev, struct tg3 *tp, dev->mtu = new_mtu; if (new_mtu > ETH_DATA_LEN) { - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) { + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) { tp->tg3_flags2 &= ~TG3_FLG2_TSO_CAPABLE; ethtool_op_set_tso(dev, 0); } else tp->tg3_flags |= TG3_FLAG_JUMBO_RING_ENABLE; } else { - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) tp->tg3_flags2 |= TG3_FLG2_TSO_CAPABLE; tp->tg3_flags &= ~TG3_FLAG_JUMBO_RING_ENABLE; } @@ -3850,7 +3864,7 @@ static void tg3_init_rings(struct tg3 *tp) memset(tp->tx_ring, 0, TG3_TX_RING_BYTES); tp->rx_pkt_buf_sz = RX_PKT_BUF_SZ; - if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) && + if ((tp->tg3_flags2 & TG3_FLG2_5780_CLASS) && (tp->dev->mtu > ETH_DATA_LEN)) tp->rx_pkt_buf_sz = RX_JUMBO_PKT_BUF_SZ; @@ -3905,10 +3919,8 @@ static void tg3_init_rings(struct tg3 *tp) */ static void tg3_free_consistent(struct tg3 *tp) { - if (tp->rx_std_buffers) { - kfree(tp->rx_std_buffers); - tp->rx_std_buffers = NULL; - } + kfree(tp->rx_std_buffers); + tp->rx_std_buffers = NULL; if (tp->rx_std) { pci_free_consistent(tp->pdev, TG3_RX_RING_BYTES, tp->rx_std, tp->rx_std_mapping); @@ -4347,7 +4359,7 @@ static int tg3_chip_reset(struct tg3 *tp) val &= ~PCIX_CAPS_RELAXED_ORDERING; pci_write_config_dword(tp->pdev, TG3PCI_X_CAPS, val); - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) { + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) { u32 val; /* Chip reset on 5780 will reset MSI enable bit, @@ -6003,7 +6015,7 @@ static int tg3_reset_hw(struct tg3 *tp) tw32(MAC_RCV_VALUE_1, 0xffffffff & RCV_RULE_DISABLE_MASK); if ((tp->tg3_flags2 & TG3_FLG2_5705_PLUS) && - (GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780)) + !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) limit = 8; else limit = 16; @@ -6191,14 +6203,16 @@ static void tg3_timer(unsigned long __opaque) tp->timer_counter = tp->timer_multiplier; } - /* Heartbeat is only sent once every 120 seconds. */ + /* Heartbeat is only sent once every 2 seconds. */ if (!--tp->asf_counter) { if (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) { u32 val; - tg3_write_mem(tp, NIC_SRAM_FW_CMD_MBOX, FWCMD_NICDRV_ALIVE); - tg3_write_mem(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4); - tg3_write_mem(tp, NIC_SRAM_FW_CMD_DATA_MBOX, 3); + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_MBOX, + FWCMD_NICDRV_ALIVE2); + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_LEN_MBOX, 4); + /* 5 seconds timeout */ + tg3_write_mem_fast(tp, NIC_SRAM_FW_CMD_DATA_MBOX, 5); val = tr32(GRC_RX_CPU_EVENT); val |= (1 << 14); tw32(GRC_RX_CPU_EVENT, val); @@ -6409,7 +6423,7 @@ static int tg3_open(struct net_device *dev) tp->timer_counter = tp->timer_multiplier = (HZ / tp->timer_offset); tp->asf_counter = tp->asf_multiplier = - ((HZ / tp->timer_offset) * 120); + ((HZ / tp->timer_offset) * 2); init_timer(&tp->timer); tp->timer.expires = jiffies + tp->timer_offset; @@ -7237,7 +7251,7 @@ static int tg3_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) cmd->supported |= (SUPPORTED_1000baseT_Half | SUPPORTED_1000baseT_Full); - if (!(tp->tg3_flags2 & TG3_FLG2_PHY_SERDES)) + if (!(tp->tg3_flags2 & TG3_FLG2_ANY_SERDES)) cmd->supported |= (SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | SUPPORTED_10baseT_Half | @@ -7264,7 +7278,7 @@ static int tg3_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct tg3 *tp = netdev_priv(dev); - if (tp->tg3_flags2 & TG3_FLG2_PHY_SERDES) { + if (tp->tg3_flags2 & TG3_FLG2_ANY_SERDES) { /* These are the only valid advertisement bits allowed. */ if (cmd->autoneg == AUTONEG_ENABLE && (cmd->advertising & ~(ADVERTISED_1000baseT_Half | @@ -7272,7 +7286,17 @@ static int tg3_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) ADVERTISED_Autoneg | ADVERTISED_FIBRE))) return -EINVAL; - } + /* Fiber can only do SPEED_1000. */ + else if ((cmd->autoneg != AUTONEG_ENABLE) && + (cmd->speed != SPEED_1000)) + return -EINVAL; + /* Copper cannot force SPEED_1000. */ + } else if ((cmd->autoneg != AUTONEG_ENABLE) && + (cmd->speed == SPEED_1000)) + return -EINVAL; + else if ((cmd->speed == SPEED_1000) && + (tp->tg3_flags2 & TG3_FLAG_10_100_ONLY)) + return -EINVAL; tg3_full_lock(tp, 0); @@ -8380,7 +8404,7 @@ static void __devinit tg3_get_nvram_info(struct tg3 *tp) } if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750) || - (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780)) { + (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) { switch (nvcfg1 & NVRAM_CFG1_VENDOR_MASK) { case FLASH_VENDOR_ATMEL_FLASH_BUFFERED: tp->nvram_jedecnum = JEDEC_ATMEL; @@ -8980,7 +9004,7 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp) tp->phy_id = eeprom_phy_id; if (eeprom_phy_serdes) { - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) + if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS) tp->tg3_flags2 |= TG3_FLG2_MII_SERDES; else tp->tg3_flags2 |= TG3_FLG2_PHY_SERDES; @@ -9393,8 +9417,11 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) } /* Find msi capability. */ - if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) + if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780 || + GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) { + tp->tg3_flags2 |= TG3_FLG2_5780_CLASS; tp->msi_cap = pci_find_capability(tp->pdev, PCI_CAP_ID_MSI); + } /* Initialize misc host control in PCI block. */ tp->misc_host_ctrl |= (misc_ctrl_reg & @@ -9412,7 +9439,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5750 || GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5752 || - GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) + (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) tp->tg3_flags2 |= TG3_FLG2_5750_PLUS; if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5705) || @@ -9607,7 +9634,7 @@ static int __devinit tg3_get_invariants(struct tg3 *tp) * ether_setup() via the alloc_etherdev() call */ if (tp->dev->mtu > ETH_DATA_LEN && - GET_ASIC_REV(tp->pci_chip_rev_id) != ASIC_REV_5780) + !(tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) tp->tg3_flags |= TG3_FLAG_JUMBO_RING_ENABLE; /* Determine WakeOnLan speed to use. */ @@ -9830,7 +9857,7 @@ static int __devinit tg3_get_device_address(struct tg3 *tp) mac_offset = 0x7c; if ((GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704 && !(tp->tg3_flags & TG3_FLG2_SUN_570X)) || - GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) { + (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)) { if (tr32(TG3PCI_DUAL_MAC_CTRL) & DUAL_MAC_CTRL_ID) mac_offset = 0xcc; if (tg3_nvram_lock(tp)) @@ -10148,6 +10175,9 @@ static int __devinit tg3_test_dma(struct tg3 *tp) } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5780) { /* 5780 always in PCIX mode */ tp->dma_rwctrl |= 0x00144000; + } else if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5714) { + /* 5714 always in PCIX mode */ + tp->dma_rwctrl |= 0x00148000; } else { tp->dma_rwctrl |= 0x001b000f; } @@ -10347,6 +10377,7 @@ static char * __devinit tg3_phy_string(struct tg3 *tp) case PHY_ID_BCM5705: return "5705"; case PHY_ID_BCM5750: return "5750"; case PHY_ID_BCM5752: return "5752"; + case PHY_ID_BCM5714: return "5714"; case PHY_ID_BCM5780: return "5780"; case PHY_ID_BCM8002: return "8002/serdes"; case 0: return "serdes"; @@ -10492,17 +10523,17 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, } /* Configure DMA attributes. */ - err = pci_set_dma_mask(pdev, 0xffffffffffffffffULL); + err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); if (!err) { pci_using_dac = 1; - err = pci_set_consistent_dma_mask(pdev, 0xffffffffffffffffULL); + err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); if (err < 0) { printk(KERN_ERR PFX "Unable to obtain 64 bit DMA " "for consistent allocations\n"); goto err_out_free_res; } } else { - err = pci_set_dma_mask(pdev, 0xffffffffULL); + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (err) { printk(KERN_ERR PFX "No usable DMA configuration, " "aborting.\n"); diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 2e733c6..fb7e2a5 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -137,6 +137,7 @@ #define ASIC_REV_5750 0x04 #define ASIC_REV_5752 0x06 #define ASIC_REV_5780 0x08 +#define ASIC_REV_5714 0x09 #define GET_CHIP_REV(CHIP_REV_ID) ((CHIP_REV_ID) >> 8) #define CHIPREV_5700_AX 0x70 #define CHIPREV_5700_BX 0x71 @@ -531,6 +532,8 @@ #define MAC_SERDES_CFG_EDGE_SELECT 0x00001000 #define MAC_SERDES_STAT 0x00000594 /* 0x598 --> 0x5b0 unused */ +#define SERDES_RX_CTRL 0x000005b0 /* 5780/5714 only */ +#define SERDES_RX_SIG_DETECT 0x00000400 #define SG_DIG_CTRL 0x000005b0 #define SG_DIG_USING_HW_AUTONEG 0x80000000 #define SG_DIG_SOFT_RESET 0x40000000 @@ -1329,6 +1332,8 @@ #define GRC_LCLCTRL_CLEARINT 0x00000002 #define GRC_LCLCTRL_SETINT 0x00000004 #define GRC_LCLCTRL_INT_ON_ATTN 0x00000008 +#define GRC_LCLCTRL_USE_SIG_DETECT 0x00000010 /* 5714/5780 only */ +#define GRC_LCLCTRL_USE_EXT_SIG_DETECT 0x00000020 /* 5714/5780 only */ #define GRC_LCLCTRL_GPIO_INPUT3 0x00000020 #define GRC_LCLCTRL_GPIO_OE3 0x00000040 #define GRC_LCLCTRL_GPIO_OUTPUT3 0x00000080 @@ -1507,6 +1512,7 @@ #define FWCMD_NICDRV_IPV6ADDR_CHG 0x00000004 #define FWCMD_NICDRV_FIX_DMAR 0x00000005 #define FWCMD_NICDRV_FIX_DMAW 0x00000006 +#define FWCMD_NICDRV_ALIVE2 0x0000000d #define NIC_SRAM_FW_CMD_LEN_MBOX 0x00000b7c #define NIC_SRAM_FW_CMD_DATA_MBOX 0x00000b80 #define NIC_SRAM_FW_ASF_STATUS_MBOX 0x00000c00 @@ -2175,6 +2181,7 @@ struct tg3 { TG3_FLG2_MII_SERDES) #define TG3_FLG2_PARALLEL_DETECT 0x01000000 #define TG3_FLG2_ICH_WORKAROUND 0x02000000 +#define TG3_FLG2_5780_CLASS 0x04000000 u32 split_mode_max_reqs; #define SPLIT_MODE_5704_MAX_REQ 3 @@ -2222,6 +2229,7 @@ struct tg3 { #define PHY_ID_BCM5705 0x600081a0 #define PHY_ID_BCM5750 0x60008180 #define PHY_ID_BCM5752 0x60008100 +#define PHY_ID_BCM5714 0x60008340 #define PHY_ID_BCM5780 0x60008350 #define PHY_ID_BCM8002 0x60010140 #define PHY_ID_INVALID 0xffffffff @@ -2246,8 +2254,8 @@ struct tg3 { (X) == PHY_ID_BCM5411 || (X) == PHY_ID_BCM5701 || \ (X) == PHY_ID_BCM5703 || (X) == PHY_ID_BCM5704 || \ (X) == PHY_ID_BCM5705 || (X) == PHY_ID_BCM5750 || \ - (X) == PHY_ID_BCM5752 || (X) == PHY_ID_BCM5780 || \ - (X) == PHY_ID_BCM8002) + (X) == PHY_ID_BCM5752 || (X) == PHY_ID_BCM5714 || \ + (X) == PHY_ID_BCM5780 || (X) == PHY_ID_BCM8002) struct tg3_hw_stats *hw_stats; dma_addr_t stats_mapping; diff --git a/drivers/net/tulip/de2104x.c b/drivers/net/tulip/de2104x.c index 6b8eee8..d7fb3ff 100644 --- a/drivers/net/tulip/de2104x.c +++ b/drivers/net/tulip/de2104x.c @@ -2076,8 +2076,7 @@ static int __init de_init_one (struct pci_dev *pdev, return 0; err_out_iomap: - if (de->ee_data) - kfree(de->ee_data); + kfree(de->ee_data); iounmap(regs); err_out_res: pci_release_regions(pdev); @@ -2096,8 +2095,7 @@ static void __exit de_remove_one (struct pci_dev *pdev) if (!dev) BUG(); unregister_netdev(dev); - if (de->ee_data) - kfree(de->ee_data); + kfree(de->ee_data); iounmap(de->regs); pci_release_regions(pdev); pci_disable_device(pdev); diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c index 6266a9a..125ed00 100644 --- a/drivers/net/tulip/tulip_core.c +++ b/drivers/net/tulip/tulip_core.c @@ -1727,8 +1727,7 @@ err_out_free_ring: tp->rx_ring, tp->rx_ring_dma); err_out_mtable: - if (tp->mtable) - kfree (tp->mtable); + kfree (tp->mtable); pci_iounmap(pdev, ioaddr); err_out_free_res: @@ -1806,8 +1805,7 @@ static void __devexit tulip_remove_one (struct pci_dev *pdev) sizeof (struct tulip_rx_desc) * RX_RING_SIZE + sizeof (struct tulip_tx_desc) * TX_RING_SIZE, tp->rx_ring, tp->rx_ring_dma); - if (tp->mtable) - kfree (tp->mtable); + kfree (tp->mtable); pci_iounmap(pdev, tp->base_addr); free_netdev (dev); pci_release_regions (pdev); diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c index abc5cee..a368d08 100644 --- a/drivers/net/via-velocity.c +++ b/drivers/net/via-velocity.c @@ -1212,10 +1212,8 @@ static void velocity_free_td_ring(struct velocity_info *vptr) velocity_free_td_ring_entry(vptr, j, i); } - if (vptr->td_infos[j]) { - kfree(vptr->td_infos[j]); - vptr->td_infos[j] = NULL; - } + kfree(vptr->td_infos[j]); + vptr->td_infos[j] = NULL; } } diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c index cb429e7..4c11699 100644 --- a/drivers/net/wireless/airo.c +++ b/drivers/net/wireless/airo.c @@ -2381,14 +2381,10 @@ void stop_airo_card( struct net_device *dev, int freeres ) dev_kfree_skb(skb); } - if (ai->flash) - kfree(ai->flash); - if (ai->rssi) - kfree(ai->rssi); - if (ai->APList) - kfree(ai->APList); - if (ai->SSID) - kfree(ai->SSID); + kfree(ai->flash); + kfree(ai->rssi); + kfree(ai->APList); + kfree(ai->SSID); if (freeres) { /* PCMCIA frees this stuff, so only for PCI and ISA */ release_region( dev->base_addr, 64 ); @@ -3626,10 +3622,8 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock) int rc; memset( &mySsid, 0, sizeof( mySsid ) ); - if (ai->flash) { - kfree (ai->flash); - ai->flash = NULL; - } + kfree (ai->flash); + ai->flash = NULL; /* The NOP is the first step in getting the card going */ cmd.cmd = NOP; @@ -3666,14 +3660,10 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock) tdsRssiRid rssi_rid; CapabilityRid cap_rid; - if (ai->APList) { - kfree(ai->APList); - ai->APList = NULL; - } - if (ai->SSID) { - kfree(ai->SSID); - ai->SSID = NULL; - } + kfree(ai->APList); + ai->APList = NULL; + kfree(ai->SSID); + ai->SSID = NULL; // general configuration (read/modify/write) status = readConfigRid(ai, lock); if ( status != SUCCESS ) return ERROR; @@ -3687,10 +3677,8 @@ static u16 setup_card(struct airo_info *ai, u8 *mac, int lock) memcpy(ai->rssi, (u8*)&rssi_rid + 2, 512); /* Skip RID length member */ } else { - if (ai->rssi) { - kfree(ai->rssi); - ai->rssi = NULL; - } + kfree(ai->rssi); + ai->rssi = NULL; if (cap_rid.softCap & 8) ai->config.rmode |= RXMODE_NORMALIZED_RSSI; else @@ -5369,11 +5357,13 @@ static int proc_BSSList_open( struct inode *inode, struct file *file ) { static int proc_close( struct inode *inode, struct file *file ) { - struct proc_data *data = (struct proc_data *)file->private_data; - if ( data->on_close != NULL ) data->on_close( inode, file ); - if ( data->rbuffer ) kfree( data->rbuffer ); - if ( data->wbuffer ) kfree( data->wbuffer ); - kfree( data ); + struct proc_data *data = file->private_data; + + if (data->on_close != NULL) + data->on_close(inode, file); + kfree(data->rbuffer); + kfree(data->wbuffer); + kfree(data); return 0; } diff --git a/drivers/net/wireless/airo_cs.c b/drivers/net/wireless/airo_cs.c index bf25584..784de91 100644 --- a/drivers/net/wireless/airo_cs.c +++ b/drivers/net/wireless/airo_cs.c @@ -258,9 +258,7 @@ static void airo_detach(dev_link_t *link) /* Unlink device structure, free pieces */ *linkp = link->next; - if (link->priv) { - kfree(link->priv); - } + kfree(link->priv); kfree(link); } /* airo_detach */ diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c index d570110..1fbe027 100644 --- a/drivers/net/wireless/atmel.c +++ b/drivers/net/wireless/atmel.c @@ -1653,8 +1653,7 @@ void stop_atmel_card(struct net_device *dev, int freeres) unregister_netdev(dev); remove_proc_entry("driver/atmel", NULL); free_irq(dev->irq, dev); - if (priv->firmware) - kfree(priv->firmware); + kfree(priv->firmware); if (freeres) { /* PCMCIA frees this stuff, so only for PCI */ release_region(dev->base_addr, 64); @@ -2450,8 +2449,7 @@ static int atmel_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) break; } - if (priv->firmware) - kfree(priv->firmware); + kfree(priv->firmware); priv->firmware = new_firmware; priv->firmware_length = com.len; diff --git a/drivers/net/wireless/atmel_cs.c b/drivers/net/wireless/atmel_cs.c index ff031a3..195cb36 100644 --- a/drivers/net/wireless/atmel_cs.c +++ b/drivers/net/wireless/atmel_cs.c @@ -259,8 +259,7 @@ static void atmel_detach(dev_link_t *link) /* Unlink device structure, free pieces */ *linkp = link->next; - if (link->priv) - kfree(link->priv); + kfree(link->priv); kfree(link); } diff --git a/drivers/net/wireless/hermes.c b/drivers/net/wireless/hermes.c index eba0d9d..579480d 100644 --- a/drivers/net/wireless/hermes.c +++ b/drivers/net/wireless/hermes.c @@ -444,6 +444,43 @@ int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, unsigned len, return err; } +/* Write a block of data to the chip's buffer with padding if + * neccessary, via the BAP. Synchronization/serialization is the + * caller's problem. len must be even. + * + * Returns: < 0 on internal failure (errno), 0 on success, > 0 on error from firmware + */ +int hermes_bap_pwrite_pad(hermes_t *hw, int bap, const void *buf, unsigned data_len, unsigned len, + u16 id, u16 offset) +{ + int dreg = bap ? HERMES_DATA1 : HERMES_DATA0; + int err = 0; + + if (len < 0 || len % 2 || data_len > len) + return -EINVAL; + + err = hermes_bap_seek(hw, bap, id, offset); + if (err) + goto out; + + /* Transfer all the complete words of data */ + hermes_write_words(hw, dreg, buf, data_len/2); + /* If there is an odd byte left over pad and transfer it */ + if (data_len & 1) { + u8 end[2]; + end[1] = 0; + end[0] = ((unsigned char *)buf)[data_len - 1]; + hermes_write_words(hw, dreg, end, 1); + data_len ++; + } + /* Now send zeros for the padding */ + if (data_len < len) + hermes_clear_words(hw, dreg, (len - data_len) / 2); + /* Complete */ + out: + return err; +} + /* Read a Length-Type-Value record from the card. * * If length is NULL, we ignore the length read from the card, and @@ -531,6 +568,7 @@ EXPORT_SYMBOL(hermes_allocate); EXPORT_SYMBOL(hermes_bap_pread); EXPORT_SYMBOL(hermes_bap_pwrite); +EXPORT_SYMBOL(hermes_bap_pwrite_pad); EXPORT_SYMBOL(hermes_read_ltv); EXPORT_SYMBOL(hermes_write_ltv); diff --git a/drivers/net/wireless/hermes.h b/drivers/net/wireless/hermes.h index ad28e32..a6bd472 100644 --- a/drivers/net/wireless/hermes.h +++ b/drivers/net/wireless/hermes.h @@ -376,6 +376,8 @@ int hermes_bap_pread(hermes_t *hw, int bap, void *buf, unsigned len, u16 id, u16 offset); int hermes_bap_pwrite(hermes_t *hw, int bap, const void *buf, unsigned len, u16 id, u16 offset); +int hermes_bap_pwrite_pad(hermes_t *hw, int bap, const void *buf, + unsigned data_len, unsigned len, u16 id, u16 offset); int hermes_read_ltv(hermes_t *hw, int bap, u16 rid, unsigned buflen, u16 *length, void *buf); int hermes_write_ltv(hermes_t *hw, int bap, u16 rid, diff --git a/drivers/net/wireless/hostap/hostap_ioctl.c b/drivers/net/wireless/hostap/hostap_ioctl.c index 53f5246..2617d70 100644 --- a/drivers/net/wireless/hostap/hostap_ioctl.c +++ b/drivers/net/wireless/hostap/hostap_ioctl.c @@ -552,7 +552,6 @@ static int prism2_ioctl_giwaplist(struct net_device *dev, kfree(addr); kfree(qual); - return 0; } @@ -3081,9 +3080,7 @@ static int prism2_ioctl_priv_download(local_info_t *local, struct iw_point *p) ret = local->func->download(local, param); out: - if (param != NULL) - kfree(param); - + kfree(param); return ret; } #endif /* PRISM2_DOWNLOAD_SUPPORT */ @@ -3890,9 +3887,7 @@ static int prism2_ioctl_priv_hostapd(local_info_t *local, struct iw_point *p) } out: - if (param != NULL) - kfree(param); - + kfree(param); return ret; } diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c index de4e6c2..3db0c32 100644 --- a/drivers/net/wireless/ipw2200.c +++ b/drivers/net/wireless/ipw2200.c @@ -4030,6 +4030,10 @@ static struct ipw_rx_queue *ipw_rx_queue_alloc(struct ipw_priv *priv) int i; rxq = (struct ipw_rx_queue *)kmalloc(sizeof(*rxq), GFP_KERNEL); + if (unlikely(!rxq)) { + IPW_ERROR("memory allocation failed\n"); + return NULL; + } memset(rxq, 0, sizeof(*rxq)); spin_lock_init(&rxq->lock); INIT_LIST_HEAD(&rxq->rx_free); diff --git a/drivers/net/wireless/orinoco.c b/drivers/net/wireless/orinoco.c index d3d4ec9..488ab06 100644 --- a/drivers/net/wireless/orinoco.c +++ b/drivers/net/wireless/orinoco.c @@ -490,7 +490,8 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) return 0; } - /* Check packet length, pad short packets, round up odd length */ + /* Length of the packet body */ + /* FIXME: what if the skb is smaller than this? */ len = max_t(int, ALIGN(skb->len, 2), ETH_ZLEN); skb = skb_padto(skb, len); if (skb == NULL) @@ -541,13 +542,21 @@ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) stats->tx_errors++; goto fail; } + /* Actual xfer length - allow for padding */ + len = ALIGN(data_len, 2); + if (len < ETH_ZLEN - ETH_HLEN) + len = ETH_ZLEN - ETH_HLEN; } else { /* IEEE 802.3 frame */ data_len = len + ETH_HLEN; data_off = HERMES_802_3_OFFSET; p = skb->data; + /* Actual xfer length - round up for odd length packets */ + len = ALIGN(data_len, 2); + if (len < ETH_ZLEN) + len = ETH_ZLEN; } - err = hermes_bap_pwrite(hw, USER_BAP, p, data_len, + err = hermes_bap_pwrite_pad(hw, USER_BAP, p, data_len, len, txfid, data_off); if (err) { printk(KERN_ERR "%s: Error %d writing packet to BAP\n", diff --git a/drivers/net/wireless/prism54/islpci_dev.c b/drivers/net/wireless/prism54/islpci_dev.c index 6c9584a..78bdb35 100644 --- a/drivers/net/wireless/prism54/islpci_dev.c +++ b/drivers/net/wireless/prism54/islpci_dev.c @@ -754,8 +754,7 @@ islpci_free_memory(islpci_private *priv) pci_unmap_single(priv->pdev, buf->pci_addr, buf->size, PCI_DMA_FROMDEVICE); buf->pci_addr = 0; - if (buf->mem) - kfree(buf->mem); + kfree(buf->mem); buf->size = 0; buf->mem = NULL; } diff --git a/drivers/net/wireless/prism54/islpci_eth.c b/drivers/net/wireless/prism54/islpci_eth.c index 5952e996..3b49efa 100644 --- a/drivers/net/wireless/prism54/islpci_eth.c +++ b/drivers/net/wireless/prism54/islpci_eth.c @@ -97,12 +97,6 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev) /* lock the driver code */ spin_lock_irqsave(&priv->slock, flags); - /* determine the amount of fragments needed to store the frame */ - - frame_size = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; - if (init_wds) - frame_size += 6; - /* check whether the destination queue has enough fragments for the frame */ curr_frag = le32_to_cpu(cb->driver_curr_frag[ISL38XX_CB_TX_DATA_LQ]); if (unlikely(curr_frag - priv->free_data_tx >= ISL38XX_CB_TX_QSIZE)) { @@ -213,6 +207,7 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev) /* store the skb address for future freeing */ priv->data_low_tx[index] = skb; /* set the proper fragment start address and size information */ + frame_size = skb->len; fragment->size = cpu_to_le16(frame_size); fragment->flags = cpu_to_le16(0); /* set to 1 if more fragments */ fragment->address = cpu_to_le32(pci_map_address); @@ -246,12 +241,10 @@ islpci_eth_transmit(struct sk_buff *skb, struct net_device *ndev) return 0; drop_free: - /* free the skbuf structure before aborting */ - dev_kfree_skb(skb); - skb = NULL; - priv->statistics.tx_dropped++; spin_unlock_irqrestore(&priv->slock, flags); + dev_kfree_skb(skb); + skb = NULL; return err; } diff --git a/drivers/net/wireless/prism54/oid_mgt.c b/drivers/net/wireless/prism54/oid_mgt.c index 12123e2..eea2f04 100644 --- a/drivers/net/wireless/prism54/oid_mgt.c +++ b/drivers/net/wireless/prism54/oid_mgt.c @@ -268,11 +268,10 @@ mgt_clean(islpci_private *priv) if (!priv->mib) return; - for (i = 0; i < OID_NUM_LAST; i++) - if (priv->mib[i]) { - kfree(priv->mib[i]); - priv->mib[i] = NULL; - } + for (i = 0; i < OID_NUM_LAST; i++) { + kfree(priv->mib[i]); + priv->mib[i] = NULL; + } kfree(priv->mib); priv->mib = NULL; } diff --git a/drivers/net/wireless/strip.c b/drivers/net/wireless/strip.c index 7bc7fc8..d25264b 100644 --- a/drivers/net/wireless/strip.c +++ b/drivers/net/wireless/strip.c @@ -860,12 +860,9 @@ static int allocate_buffers(struct strip *strip_info, int mtu) strip_info->mtu = dev->mtu = mtu; return (1); } - if (r) - kfree(r); - if (s) - kfree(s); - if (t) - kfree(t); + kfree(r); + kfree(s); + kfree(t); return (0); } @@ -922,13 +919,9 @@ static int strip_change_mtu(struct net_device *dev, int new_mtu) printk(KERN_NOTICE "%s: strip MTU changed fom %d to %d.\n", strip_info->dev->name, old_mtu, strip_info->mtu); - if (orbuff) - kfree(orbuff); - if (osbuff) - kfree(osbuff); - if (otbuff) - kfree(otbuff); - + kfree(orbuff); + kfree(osbuff); + kfree(otbuff); return 0; } @@ -2498,18 +2491,13 @@ static int strip_close_low(struct net_device *dev) /* * Free all STRIP frame buffers. */ - if (strip_info->rx_buff) { - kfree(strip_info->rx_buff); - strip_info->rx_buff = NULL; - } - if (strip_info->sx_buff) { - kfree(strip_info->sx_buff); - strip_info->sx_buff = NULL; - } - if (strip_info->tx_buff) { - kfree(strip_info->tx_buff); - strip_info->tx_buff = NULL; - } + kfree(strip_info->rx_buff); + strip_info->rx_buff = NULL; + kfree(strip_info->sx_buff); + strip_info->sx_buff = NULL; + kfree(strip_info->tx_buff); + strip_info->tx_buff = NULL; + del_timer(&strip_info->idle_timer); return 0; } diff --git a/include/linux/fs_enet_pd.h b/include/linux/fs_enet_pd.h new file mode 100644 index 0000000..bef23bb --- /dev/null +++ b/include/linux/fs_enet_pd.h @@ -0,0 +1,136 @@ +/* + * Platform information definitions for the + * universal Freescale Ethernet driver. + * + * Copyright (c) 2003 Intracom S.A. + * by Pantelis Antoniou <panto@intracom.gr> + * + * 2005 (c) MontaVista Software, Inc. + * Vitaly Bordug <vbordug@ru.mvista.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#ifndef FS_ENET_PD_H +#define FS_ENET_PD_H + +#include <linux/version.h> +#include <asm/types.h> + +#define FS_ENET_NAME "fs_enet" + +enum fs_id { + fsid_fec1, + fsid_fec2, + fsid_fcc1, + fsid_fcc2, + fsid_fcc3, + fsid_scc1, + fsid_scc2, + fsid_scc3, + fsid_scc4, +}; + +#define FS_MAX_INDEX 9 + +static inline int fs_get_fec_index(enum fs_id id) +{ + if (id >= fsid_fec1 && id <= fsid_fec2) + return id - fsid_fec1; + return -1; +} + +static inline int fs_get_fcc_index(enum fs_id id) +{ + if (id >= fsid_fcc1 && id <= fsid_fcc3) + return id - fsid_fcc1; + return -1; +} + +static inline int fs_get_scc_index(enum fs_id id) +{ + if (id >= fsid_scc1 && id <= fsid_scc4) + return id - fsid_scc1; + return -1; +} + +enum fs_mii_method { + fsmii_fixed, + fsmii_fec, + fsmii_bitbang, +}; + +enum fs_ioport { + fsiop_porta, + fsiop_portb, + fsiop_portc, + fsiop_portd, + fsiop_porte, +}; + +struct fs_mii_bus_info { + int method; /* mii method */ + int id; /* the id of the mii_bus */ + int disable_aneg; /* if the controller needs to negothiate speed & duplex */ + int lpa; /* the default board-specific vallues will be applied otherwise */ + + union { + struct { + int duplex; + int speed; + } fixed; + + struct { + /* nothing */ + } fec; + + struct { + /* nothing */ + } scc; + + struct { + int mdio_port; /* port & bit for MDIO */ + int mdio_bit; + int mdc_port; /* port & bit for MDC */ + int mdc_bit; + int delay; /* delay in us */ + } bitbang; + } i; +}; + +struct fs_platform_info { + + void(*init_ioports)(void); + /* device specific information */ + int fs_no; /* controller index */ + + u32 cp_page; /* CPM page */ + u32 cp_block; /* CPM sblock */ + + u32 clk_trx; /* some stuff for pins & mux configuration*/ + u32 clk_route; + u32 clk_mask; + + u32 mem_offset; + u32 dpram_offset; + u32 fcc_regs_c; + + u32 device_flags; + + int phy_addr; /* the phy address (-1 no phy) */ + int phy_irq; /* the phy irq (if it exists) */ + + const struct fs_mii_bus_info *bus_info; + + int rx_ring, tx_ring; /* number of buffers on rx */ + __u8 macaddr[6]; /* mac address */ + int rx_copybreak; /* limit we copy small frames */ + int use_napi; /* use NAPI */ + int napi_weight; /* NAPI weight */ + + int use_rmii; /* use RMII mode */ +}; + +#endif diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index 467a096..5619200 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1788,11 +1788,13 @@ #define PCI_DEVICE_ID_TIGON3_5721 0x1659 #define PCI_DEVICE_ID_TIGON3_5705M 0x165d #define PCI_DEVICE_ID_TIGON3_5705M_2 0x165e +#define PCI_DEVICE_ID_TIGON3_5714 0x1668 #define PCI_DEVICE_ID_TIGON3_5780 0x166a #define PCI_DEVICE_ID_TIGON3_5780S 0x166b #define PCI_DEVICE_ID_TIGON3_5705F 0x166e #define PCI_DEVICE_ID_TIGON3_5750 0x1676 #define PCI_DEVICE_ID_TIGON3_5751 0x1677 +#define PCI_DEVICE_ID_TIGON3_5715 0x1678 #define PCI_DEVICE_ID_TIGON3_5750M 0x167c #define PCI_DEVICE_ID_TIGON3_5751M 0x167d #define PCI_DEVICE_ID_TIGON3_5751F 0x167e diff --git a/include/net/ax25.h b/include/net/ax25.h index 30bb4a8..2250a18 100644 --- a/include/net/ax25.h +++ b/include/net/ax25.h @@ -237,8 +237,7 @@ typedef struct ax25_cb { static __inline__ void ax25_cb_put(ax25_cb *ax25) { if (atomic_dec_and_test(&ax25->refcount)) { - if (ax25->digipeat) - kfree(ax25->digipeat); + kfree(ax25->digipeat); kfree(ax25); } } diff --git a/include/net/netrom.h b/include/net/netrom.h index a6bf6e0..a5ee53b 100644 --- a/include/net/netrom.h +++ b/include/net/netrom.h @@ -136,8 +136,7 @@ static __inline__ void nr_node_put(struct nr_node *nr_node) static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh) { if (atomic_dec_and_test(&nr_neigh->refcount)) { - if (nr_neigh->digipeat != NULL) - kfree(nr_neigh->digipeat); + kfree(nr_neigh->digipeat); kfree(nr_neigh); } } |
