diff options
Diffstat (limited to 'drivers/net/ethernet/8390/smc-mca.c')
| -rw-r--r-- | drivers/net/ethernet/8390/smc-mca.c | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/drivers/net/ethernet/8390/smc-mca.c b/drivers/net/ethernet/8390/smc-mca.c new file mode 100644 index 0000000..34934fb --- /dev/null +++ b/drivers/net/ethernet/8390/smc-mca.c @@ -0,0 +1,576 @@ +/* smc-mca.c: A SMC Ultra ethernet driver for linux. */ +/* + Most of this driver, except for ultramca_probe is nearly + verbatim from smc-ultra.c by Donald Becker. The rest is + written and copyright 1996 by David Weis, weisd3458@uni.edu + + This is a driver for the SMC Ultra and SMC EtherEZ ethercards. + + This driver uses the cards in the 8390-compatible, shared memory mode. + Most of the run-time complexity is handled by the generic code in + 8390.c. + + This driver enables the shared memory only when doing the actual data + transfers to avoid a bug in early version of the card that corrupted + data transferred by a AHA1542. + + This driver does not support the programmed-I/O data transfer mode of + the EtherEZ. That support (if available) is smc-ez.c. Nor does it + use the non-8390-compatible "Altego" mode. (No support currently planned.) + + Changelog: + + Paul Gortmaker : multiple card support for module users. + David Weis : Micro Channel-ized it. + Tom Sightler : Added support for IBM PS/2 Ethernet Adapter/A + Christopher Turcksin : Changed MCA-probe so that multiple adapters are + found correctly (Jul 16, 1997) + Chris Beauregard : Tried to merge the two changes above (Dec 15, 1997) + Tom Sightler : Fixed minor detection bug caused by above merge + Tom Sightler : Added support for three more Western Digital + MCA-adapters + Tom Sightler : Added support for 2.2.x mca_find_unused_adapter + Hartmut Schmidt : - Modified parameter detection to handle each + card differently depending on a switch-list + - 'card_ver' removed from the adapter list + - Some minor bug fixes +*/ + +#include <linux/mca.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/string.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> + +#include <asm/io.h> +#include <asm/system.h> + +#include "8390.h" + +#define DRV_NAME "smc-mca" + +static int ultramca_open(struct net_device *dev); +static void ultramca_reset_8390(struct net_device *dev); +static void ultramca_get_8390_hdr(struct net_device *dev, + struct e8390_pkt_hdr *hdr, + int ring_page); +static void ultramca_block_input(struct net_device *dev, int count, + struct sk_buff *skb, + int ring_offset); +static void ultramca_block_output(struct net_device *dev, int count, + const unsigned char *buf, + const int start_page); +static int ultramca_close_card(struct net_device *dev); + +#define START_PG 0x00 /* First page of TX buffer */ + +#define ULTRA_CMDREG 0 /* Offset to ASIC command register. */ +#define ULTRA_RESET 0x80 /* Board reset, in ULTRA_CMDREG. */ +#define ULTRA_MEMENB 0x40 /* Enable the shared memory. */ +#define ULTRA_NIC_OFFSET 16 /* NIC register offset from the base_addr. */ +#define ULTRA_IO_EXTENT 32 +#define EN0_ERWCNT 0x08 /* Early receive warning count. */ + +#define _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A 0 +#define _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A 1 +#define _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A 2 +#define _6fc1_WD_Starcard_PLUS_A_WD8003ST_A 3 +#define _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A 4 +#define _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A 5 +#define _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A 6 +#define _efe5_IBM_PS2_Adapter_A_for_Ethernet 7 + +struct smc_mca_adapters_t { + unsigned int id; + char *name; +}; + +#define MAX_ULTRAMCA_CARDS 4 /* Max number of Ultra cards per module */ + +static int ultra_io[MAX_ULTRAMCA_CARDS]; +static int ultra_irq[MAX_ULTRAMCA_CARDS]; +MODULE_LICENSE("GPL"); + +module_param_array(ultra_io, int, NULL, 0); +module_param_array(ultra_irq, int, NULL, 0); +MODULE_PARM_DESC(ultra_io, "SMC Ultra/EtherEZ MCA I/O base address(es)"); +MODULE_PARM_DESC(ultra_irq, "SMC Ultra/EtherEZ MCA IRQ number(s)"); + +static const struct { + unsigned int base_addr; +} addr_table[] = { + { 0x0800 }, + { 0x1800 }, + { 0x2800 }, + { 0x3800 }, + { 0x4800 }, + { 0x5800 }, + { 0x6800 }, + { 0x7800 }, + { 0x8800 }, + { 0x9800 }, + { 0xa800 }, + { 0xb800 }, + { 0xc800 }, + { 0xd800 }, + { 0xe800 }, + { 0xf800 } +}; + +#define MEM_MASK 64 + +static const struct { + unsigned char mem_index; + unsigned long mem_start; + unsigned char num_pages; +} mem_table[] = { + { 16, 0x0c0000, 40 }, + { 18, 0x0c4000, 40 }, + { 20, 0x0c8000, 40 }, + { 22, 0x0cc000, 40 }, + { 24, 0x0d0000, 40 }, + { 26, 0x0d4000, 40 }, + { 28, 0x0d8000, 40 }, + { 30, 0x0dc000, 40 }, + {144, 0xfc0000, 40 }, + {148, 0xfc8000, 40 }, + {154, 0xfd0000, 40 }, + {156, 0xfd8000, 40 }, + { 0, 0x0c0000, 20 }, + { 1, 0x0c2000, 20 }, + { 2, 0x0c4000, 20 }, + { 3, 0x0c6000, 20 } +}; + +#define IRQ_MASK 243 +static const struct { + unsigned char new_irq; + unsigned char old_irq; +} irq_table[] = { + { 3, 3 }, + { 4, 4 }, + { 10, 10 }, + { 14, 15 } +}; + +static short smc_mca_adapter_ids[] __initdata = { + 0x61c8, + 0x61c9, + 0x6fc0, + 0x6fc1, + 0x6fc2, + 0xefd4, + 0xefd5, + 0xefe5, + 0x0000 +}; + +static char *smc_mca_adapter_names[] __initdata = { + "SMC Ethercard PLUS Elite/A BNC/AUI (WD8013EP/A)", + "SMC Ethercard PLUS Elite/A UTP/AUI (WD8013WP/A)", + "WD Ethercard PLUS/A (WD8003E/A or WD8003ET/A)", + "WD Starcard PLUS/A (WD8003ST/A)", + "WD Ethercard PLUS 10T/A (WD8003W/A)", + "IBM PS/2 Adapter/A for Ethernet UTP/AUI (WD8013WP/A)", + "IBM PS/2 Adapter/A for Ethernet BNC/AUI (WD8013EP/A)", + "IBM PS/2 Adapter/A for Ethernet", + NULL +}; + +static int ultra_found = 0; + + +static const struct net_device_ops ultramca_netdev_ops = { + .ndo_open = ultramca_open, + .ndo_stop = ultramca_close_card, + + .ndo_start_xmit = ei_start_xmit, + .ndo_tx_timeout = ei_tx_timeout, + .ndo_get_stats = ei_get_stats, + .ndo_set_multicast_list = ei_set_multicast_list, + .ndo_validate_addr = eth_validate_addr, + .ndo_set_mac_address = eth_mac_addr, + .ndo_change_mtu = eth_change_mtu, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = ei_poll, +#endif +}; + +static int __init ultramca_probe(struct device *gen_dev) +{ + unsigned short ioaddr; + struct net_device *dev; + unsigned char reg4, num_pages; + struct mca_device *mca_dev = to_mca_device(gen_dev); + char slot = mca_dev->slot; + unsigned char pos2 = 0xff, pos3 = 0xff, pos4 = 0xff, pos5 = 0xff; + int i, rc; + int adapter = mca_dev->index; + int tbase = 0; + int tirq = 0; + int base_addr = ultra_io[ultra_found]; + int irq = ultra_irq[ultra_found]; + + if (base_addr || irq) { + printk(KERN_INFO "Probing for SMC MCA adapter"); + if (base_addr) { + printk(KERN_INFO " at I/O address 0x%04x%c", + base_addr, irq ? ' ' : '\n'); + } + if (irq) { + printk(KERN_INFO "using irq %d\n", irq); + } + } + + tirq = 0; + tbase = 0; + + /* If we're trying to match a specificied irq or io address, + * we'll reject the adapter found unless it's the one we're + * looking for */ + + pos2 = mca_device_read_stored_pos(mca_dev, 2); /* io_addr */ + pos3 = mca_device_read_stored_pos(mca_dev, 3); /* shared mem */ + pos4 = mca_device_read_stored_pos(mca_dev, 4); /* ROM bios addr range */ + pos5 = mca_device_read_stored_pos(mca_dev, 5); /* irq, media and RIPL */ + + /* Test the following conditions: + * - If an irq parameter is supplied, compare it + * with the irq of the adapter we found + * - If a base_addr paramater is given, compare it + * with the base_addr of the adapter we found + * - Check that the irq and the base_addr of the + * adapter we found is not already in use by + * this driver + */ + + switch (mca_dev->index) { + case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A: + case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A: + case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A: + case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A: + { + tbase = addr_table[(pos2 & 0xf0) >> 4].base_addr; + tirq = irq_table[(pos5 & 0xc) >> 2].new_irq; + break; + } + case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A: + case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A: + case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A: + case _efe5_IBM_PS2_Adapter_A_for_Ethernet: + { + tbase = ((pos2 & 0x0fe) * 0x10); + tirq = irq_table[(pos5 & 3)].old_irq; + break; + } + } + + if(!tirq || !tbase || + (irq && irq != tirq) || + (base_addr && tbase != base_addr)) + /* FIXME: we're trying to force the ordering of the + * devices here, there should be a way of getting this + * to happen */ + return -ENXIO; + + /* Adapter found. */ + dev = alloc_ei_netdev(); + if(!dev) + return -ENODEV; + + SET_NETDEV_DEV(dev, gen_dev); + mca_device_set_name(mca_dev, smc_mca_adapter_names[adapter]); + mca_device_set_claim(mca_dev, 1); + + printk(KERN_INFO "smc_mca: %s found in slot %d\n", + smc_mca_adapter_names[adapter], slot + 1); + + ultra_found++; + + dev->base_addr = ioaddr = mca_device_transform_ioport(mca_dev, tbase); + dev->irq = mca_device_transform_irq(mca_dev, tirq); + dev->mem_start = 0; + num_pages = 40; + + switch (adapter) { /* card-# in const array above [hs] */ + case _61c8_SMC_Ethercard_PLUS_Elite_A_BNC_AUI_WD8013EP_A: + case _61c9_SMC_Ethercard_PLUS_Elite_A_UTP_AUI_WD8013EP_A: + { + for (i = 0; i < 16; i++) { /* taking 16 counts + * up to 15 [hs] */ + if (mem_table[i].mem_index == (pos3 & ~MEM_MASK)) { + dev->mem_start = (unsigned long) + mca_device_transform_memory(mca_dev, (void *)mem_table[i].mem_start); + num_pages = mem_table[i].num_pages; + } + } + break; + } + case _6fc0_WD_Ethercard_PLUS_A_WD8003E_A_OR_WD8003ET_A: + case _6fc1_WD_Starcard_PLUS_A_WD8003ST_A: + case _6fc2_WD_Ethercard_PLUS_10T_A_WD8003W_A: + case _efe5_IBM_PS2_Adapter_A_for_Ethernet: + { + dev->mem_start = (unsigned long) + mca_device_transform_memory(mca_dev, (void *)((pos3 & 0xfc) * 0x1000)); + num_pages = 0x40; + break; + } + case _efd4_IBM_PS2_Adapter_A_for_Ethernet_UTP_AUI_WD8013WP_A: + case _efd5_IBM_PS2_Adapter_A_for_Ethernet_BNC_AUI_WD8013WP_A: + { + /* courtesy of gamera@quartz.ocn.ne.jp, pos3 indicates + * the index of the 0x2000 step. + * beware different number of pages [hs] + */ + dev->mem_start = (unsigned long) + mca_device_transform_memory(mca_dev, (void *)(0xc0000 + (0x2000 * (pos3 & 0xf)))); + num_pages = 0x20 + (2 * (pos3 & 0x10)); + break; + } + } + + /* sanity check, shouldn't happen */ + if (dev->mem_start == 0) { + rc = -ENODEV; + goto err_unclaim; + } + + if (!request_region(ioaddr, ULTRA_IO_EXTENT, DRV_NAME)) { + rc = -ENODEV; + goto err_unclaim; + } + + reg4 = inb(ioaddr + 4) & 0x7f; + outb(reg4, ioaddr + 4); + + for (i = 0; i < 6; i++) + dev->dev_addr[i] = inb(ioaddr + 8 + i); + + printk(KERN_INFO "smc_mca[%d]: Parameters: %#3x, %pM", + slot + 1, ioaddr, dev->dev_addr); + + /* Switch from the station address to the alternate register set + * and read the useful registers there. + */ + + outb(0x80 | reg4, ioaddr + 4); + + /* Enable FINE16 mode to avoid BIOS ROM width mismatches @ reboot. + */ + + outb(0x80 | inb(ioaddr + 0x0c), ioaddr + 0x0c); + + /* Switch back to the station address register set so that + * the MS-DOS driver can find the card after a warm boot. + */ + + outb(reg4, ioaddr + 4); + + dev_set_drvdata(gen_dev, dev); + + /* The 8390 isn't at the base address, so fake the offset + */ + + dev->base_addr = ioaddr + ULTRA_NIC_OFFSET; + + ei_status.name = "SMC Ultra MCA"; + ei_status.word16 = 1; + ei_status.tx_start_page = START_PG; + ei_status.rx_start_page = START_PG + TX_PAGES; + ei_status.stop_page = num_pages; + + ei_status.mem = ioremap(dev->mem_start, (ei_status.stop_page - START_PG) * 256); + if (!ei_status.mem) { + rc = -ENOMEM; + goto err_release_region; + } + + dev->mem_end = dev->mem_start + (ei_status.stop_page - START_PG) * 256; + + printk(", IRQ %d memory %#lx-%#lx.\n", + dev->irq, dev->mem_start, dev->mem_end - 1); + + ei_status.reset_8390 = &ultramca_reset_8390; + ei_status.block_input = &ultramca_block_input; + ei_status.block_output = &ultramca_block_output; + ei_status.get_8390_hdr = &ultramca_get_8390_hdr; + + ei_status.priv = slot; + + dev->netdev_ops = &ultramca_netdev_ops; + + NS8390_init(dev, 0); + + rc = register_netdev(dev); + if (rc) + goto err_unmap; + + return 0; + +err_unmap: + iounmap(ei_status.mem); +err_release_region: + release_region(ioaddr, ULTRA_IO_EXTENT); +err_unclaim: + mca_device_set_claim(mca_dev, 0); + free_netdev(dev); + return rc; +} + +static int ultramca_open(struct net_device *dev) +{ + int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ + int retval; + + if ((retval = request_irq(dev->irq, ei_interrupt, 0, dev->name, dev))) + return retval; + + outb(ULTRA_MEMENB, ioaddr); /* Enable memory */ + outb(0x80, ioaddr + 5); /* ??? */ + outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */ + outb(0x04, ioaddr + 5); /* ??? */ + + /* Set the early receive warning level in window 0 high enough not + * to receive ERW interrupts. + */ + + /* outb_p(E8390_NODMA + E8390_PAGE0, dev->base_addr); + * outb(0xff, dev->base_addr + EN0_ERWCNT); + */ + + ei_open(dev); + return 0; +} + +static void ultramca_reset_8390(struct net_device *dev) +{ + int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ + + outb(ULTRA_RESET, ioaddr); + if (ei_debug > 1) + printk("resetting Ultra, t=%ld...", jiffies); + ei_status.txing = 0; + + outb(0x80, ioaddr + 5); /* ??? */ + outb(0x01, ioaddr + 6); /* Enable interrupts and memory. */ + + if (ei_debug > 1) + printk("reset done\n"); +} + +/* Grab the 8390 specific header. Similar to the block_input routine, but + * we don't need to be concerned with ring wrap as the header will be at + * the start of a page, so we optimize accordingly. + */ + +static void ultramca_get_8390_hdr(struct net_device *dev, struct e8390_pkt_hdr *hdr, int ring_page) +{ + void __iomem *hdr_start = ei_status.mem + ((ring_page - START_PG) << 8); + +#ifdef notdef + /* Officially this is what we are doing, but the readl() is faster */ + memcpy_fromio(hdr, hdr_start, sizeof(struct e8390_pkt_hdr)); +#else + ((unsigned int*)hdr)[0] = readl(hdr_start); +#endif +} + +/* Block input and output are easy on shared memory ethercards, the only + * complication is when the ring buffer wraps. + */ + +static void ultramca_block_input(struct net_device *dev, int count, struct sk_buff *skb, int ring_offset) +{ + void __iomem *xfer_start = ei_status.mem + ring_offset - START_PG * 256; + + if (ring_offset + count > ei_status.stop_page * 256) { + /* We must wrap the input move. */ + int semi_count = ei_status.stop_page * 256 - ring_offset; + memcpy_fromio(skb->data, xfer_start, semi_count); + count -= semi_count; + memcpy_fromio(skb->data + semi_count, ei_status.mem + TX_PAGES * 256, count); + } else { + memcpy_fromio(skb->data, xfer_start, count); + } + +} + +static void ultramca_block_output(struct net_device *dev, int count, const unsigned char *buf, + int start_page) +{ + void __iomem *shmem = ei_status.mem + ((start_page - START_PG) << 8); + + memcpy_toio(shmem, buf, count); +} + +static int ultramca_close_card(struct net_device *dev) +{ + int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; /* ASIC addr */ + + netif_stop_queue(dev); + + if (ei_debug > 1) + printk("%s: Shutting down ethercard.\n", dev->name); + + outb(0x00, ioaddr + 6); /* Disable interrupts. */ + free_irq(dev->irq, dev); + + NS8390_init(dev, 0); + /* We should someday disable shared memory and change to 8-bit mode + * "just in case"... + */ + + return 0; +} + +static int ultramca_remove(struct device *gen_dev) +{ + struct mca_device *mca_dev = to_mca_device(gen_dev); + struct net_device *dev = dev_get_drvdata(gen_dev); + + if (dev) { + /* NB: ultra_close_card() does free_irq */ + int ioaddr = dev->base_addr - ULTRA_NIC_OFFSET; + + unregister_netdev(dev); + mca_device_set_claim(mca_dev, 0); + release_region(ioaddr, ULTRA_IO_EXTENT); + iounmap(ei_status.mem); + free_netdev(dev); + } + return 0; +} + + +static struct mca_driver ultra_driver = { + .id_table = smc_mca_adapter_ids, + .driver = { + .name = "smc-mca", + .bus = &mca_bus_type, + .probe = ultramca_probe, + .remove = ultramca_remove, + } +}; + +static int __init ultramca_init_module(void) +{ + if(!MCA_bus) + return -ENXIO; + + mca_register_driver(&ultra_driver); + + return ultra_found ? 0 : -ENXIO; +} + +static void __exit ultramca_cleanup_module(void) +{ + mca_unregister_driver(&ultra_driver); +} +module_init(ultramca_init_module); +module_exit(ultramca_cleanup_module); + |
