diff options
| -rw-r--r-- | sys/amd64/conf/GENERIC | 1 | ||||
| -rw-r--r-- | sys/boot/forth/loader.conf | 1 | ||||
| -rw-r--r-- | sys/conf/NOTES | 2 | ||||
| -rw-r--r-- | sys/conf/files | 1 | ||||
| -rw-r--r-- | sys/dev/alc/if_alc.c | 3496 | ||||
| -rw-r--r-- | sys/dev/alc/if_alcreg.h | 947 | ||||
| -rw-r--r-- | sys/dev/alc/if_alcvar.h | 274 | ||||
| -rw-r--r-- | sys/i386/conf/GENERIC | 1 | ||||
| -rw-r--r-- | sys/modules/Makefile | 1 | ||||
| -rw-r--r-- | sys/modules/alc/Makefile | 8 |
10 files changed, 4732 insertions, 0 deletions
diff --git a/sys/amd64/conf/GENERIC b/sys/amd64/conf/GENERIC index 64a37c2..e3b1f96 100644 --- a/sys/amd64/conf/GENERIC +++ b/sys/amd64/conf/GENERIC @@ -213,6 +213,7 @@ device vx # 3Com 3c590, 3c595 (``Vortex'') device miibus # MII bus support device ae # Attansic/Atheros L2 FastEthernet device age # Attansic/Atheros L1 Gigabit Ethernet +device alc # Atheros AR8131/AR8132 Ethernet device ale # Atheros AR8121/AR8113/AR8114 Ethernet device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet device bfe # Broadcom BCM440x 10/100 Ethernet diff --git a/sys/boot/forth/loader.conf b/sys/boot/forth/loader.conf index ecedf46..aa159ca 100644 --- a/sys/boot/forth/loader.conf +++ b/sys/boot/forth/loader.conf @@ -210,6 +210,7 @@ pf_load="NO" # packet filter miibus_load="NO" # miibus support, needed for some drivers if_ae_load="NO" # Attansic/Atheros L2 FastEthernet if_age_load="NO" # Attansic/Atheros L1 Gigabit Ethernet +if_alc_load="NO" # Atheros AR8131/AR8132 Ethernet if_ale_load="NO" # Atheros AR8121/AR8113/AR8114 Ethernet if_an_load="NO" # Aironet 4500/4800 802.11 wireless NICs if_ar_load="NO" # Digi SYNC/570i diff --git a/sys/conf/NOTES b/sys/conf/NOTES index 5befc87..7de53a2 100644 --- a/sys/conf/NOTES +++ b/sys/conf/NOTES @@ -1754,6 +1754,7 @@ device miibus # L2 PCI-Express FastEthernet controllers. # age: Support for gigabit ethernet adapters based on the Attansic/Atheros # L1 PCI express gigabit ethernet controllers. +# alc: Support for Atheros AR8131/AR8132 PCIe ethernet controllers. # ale: Support for Atheros AR8121/AR8113/AR8114 PCIe ethernet controllers. # bce: Broadcom NetXtreme II (BCM5706/BCM5708) PCI/PCIe Gigabit Ethernet # adapters. @@ -1896,6 +1897,7 @@ device xe # PCI Ethernet NICs that use the common MII bus controller code. device ae # Attansic/Atheros L2 FastEthernet device age # Attansic/Atheros L1 Gigabit Ethernet +device alc # Atheros AR8131/AR8132 Ethernet device ale # Atheros AR8121/AR8113/AR8114 Ethernet device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet device bfe # Broadcom BCM440x 10/100 Ethernet diff --git a/sys/conf/files b/sys/conf/files index 158d262..e4795b5 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -471,6 +471,7 @@ dev/aic7xxx/aic7xxx.c optional ahc dev/aic7xxx/aic7xxx_93cx6.c optional ahc dev/aic7xxx/aic7xxx_osm.c optional ahc dev/aic7xxx/aic7xxx_pci.c optional ahc pci +dev/ale/if_alc.c optional alc pci dev/ale/if_ale.c optional ale pci dev/amd/amd.c optional amd dev/amr/amr.c optional amr diff --git a/sys/dev/alc/if_alc.c b/sys/dev/alc/if_alc.c new file mode 100644 index 0000000..dc1c1fd --- /dev/null +++ b/sys/dev/alc/if_alc.c @@ -0,0 +1,3496 @@ +/*- + * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + */ + +/* Driver for Atheros AR8131/AR8132 PCIe Ethernet. */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/endian.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mbuf.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/queue.h> +#include <sys/socket.h> +#include <sys/sockio.h> +#include <sys/sysctl.h> +#include <sys/taskqueue.h> + +#include <net/bpf.h> +#include <net/if.h> +#include <net/if_arp.h> +#include <net/ethernet.h> +#include <net/if_dl.h> +#include <net/if_llc.h> +#include <net/if_media.h> +#include <net/if_types.h> +#include <net/if_vlan_var.h> + +#include <netinet/in.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/tcp.h> + +#include <dev/mii/mii.h> +#include <dev/mii/miivar.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> + +#include <machine/atomic.h> +#include <machine/bus.h> +#include <machine/in_cksum.h> + +#include <dev/alc/if_alcreg.h> +#include <dev/alc/if_alcvar.h> + +/* "device miibus" required. See GENERIC if you get errors here. */ +#include "miibus_if.h" +#undef ALC_USE_CUSTOM_CSUM + +#ifdef ALC_USE_CUSTOM_CSUM +#define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP) +#else +#define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) +#endif +#ifndef IFCAP_VLAN_HWTSO +#define IFCAP_VLAN_HWTSO 0 +#endif + +MODULE_DEPEND(alc, pci, 1, 1, 1); +MODULE_DEPEND(alc, ether, 1, 1, 1); +MODULE_DEPEND(alc, miibus, 1, 1, 1); + +/* Tunables. */ +static int msi_disable = 0; +static int msix_disable = 0; +TUNABLE_INT("hw.alc.msi_disable", &msi_disable); +TUNABLE_INT("hw.alc.msix_disable", &msix_disable); + +/* + * Devices supported by this driver. + */ +static struct alc_dev { + uint16_t alc_vendorid; + uint16_t alc_deviceid; + const char *alc_name; +} alc_devs[] = { + { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, + "Atheros AR8131 PCIe Gigabit Ethernet" }, + { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, + "Atheros AR8132 PCIe Fast Ethernet" } +}; + +static void alc_aspm(struct alc_softc *); +static int alc_attach(device_t); +static int alc_check_boundary(struct alc_softc *); +static int alc_detach(device_t); +static void alc_disable_l0s_l1(struct alc_softc *); +static int alc_dma_alloc(struct alc_softc *); +static void alc_dma_free(struct alc_softc *); +static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int); +static int alc_encap(struct alc_softc *, struct mbuf **); +#ifndef __NO_STRICT_ALIGNMENT +static struct mbuf * + alc_fixup_rx(struct ifnet *, struct mbuf *); +#endif +static void alc_get_macaddr(struct alc_softc *); +static void alc_init(void *); +static void alc_init_cmb(struct alc_softc *); +static void alc_init_locked(struct alc_softc *); +static void alc_init_rr_ring(struct alc_softc *); +static int alc_init_rx_ring(struct alc_softc *); +static void alc_init_smb(struct alc_softc *); +static void alc_init_tx_ring(struct alc_softc *); +static void alc_int_task(void *, int); +static int alc_intr(void *); +static int alc_ioctl(struct ifnet *, u_long, caddr_t); +static void alc_mac_config(struct alc_softc *); +static int alc_miibus_readreg(device_t, int, int); +static void alc_miibus_statchg(device_t); +static int alc_miibus_writereg(device_t, int, int, int); +static int alc_mediachange(struct ifnet *); +static void alc_mediastatus(struct ifnet *, struct ifmediareq *); +static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *); +static void alc_phy_down(struct alc_softc *); +static void alc_phy_reset(struct alc_softc *); +static int alc_probe(device_t); +static void alc_reset(struct alc_softc *); +static int alc_resume(device_t); +static void alc_rxeof(struct alc_softc *, struct rx_rdesc *); +static int alc_rxintr(struct alc_softc *, int); +static void alc_rxfilter(struct alc_softc *); +static void alc_rxvlan(struct alc_softc *); +static void alc_setlinkspeed(struct alc_softc *); +static void alc_setwol(struct alc_softc *); +static int alc_shutdown(device_t); +static void alc_start(struct ifnet *); +static void alc_start_queue(struct alc_softc *); +static void alc_stats_clear(struct alc_softc *); +static void alc_stats_update(struct alc_softc *); +static void alc_stop(struct alc_softc *); +static void alc_stop_mac(struct alc_softc *); +static void alc_stop_queue(struct alc_softc *); +static int alc_suspend(device_t); +static void alc_sysctl_node(struct alc_softc *); +static void alc_tick(void *); +static void alc_tx_task(void *, int); +static void alc_txeof(struct alc_softc *); +static void alc_watchdog(struct alc_softc *); +static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int); +static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS); +static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS); + +static device_method_t alc_methods[] = { + /* Device interface. */ + DEVMETHOD(device_probe, alc_probe), + DEVMETHOD(device_attach, alc_attach), + DEVMETHOD(device_detach, alc_detach), + DEVMETHOD(device_shutdown, alc_shutdown), + DEVMETHOD(device_suspend, alc_suspend), + DEVMETHOD(device_resume, alc_resume), + + /* MII interface. */ + DEVMETHOD(miibus_readreg, alc_miibus_readreg), + DEVMETHOD(miibus_writereg, alc_miibus_writereg), + DEVMETHOD(miibus_statchg, alc_miibus_statchg), + + { NULL, NULL } +}; + +static driver_t alc_driver = { + "alc", + alc_methods, + sizeof(struct alc_softc) +}; + +static devclass_t alc_devclass; + +DRIVER_MODULE(alc, pci, alc_driver, alc_devclass, 0, 0); +DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, 0, 0); + +static struct resource_spec alc_res_spec_mem[] = { + { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, + { -1, 0, 0 } +}; + +static struct resource_spec alc_irq_spec_legacy[] = { + { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, + { -1, 0, 0 } +}; + +static struct resource_spec alc_irq_spec_msi[] = { + { SYS_RES_IRQ, 1, RF_ACTIVE }, + { -1, 0, 0 } +}; + +static struct resource_spec alc_irq_spec_msix[] = { + { SYS_RES_IRQ, 1, RF_ACTIVE }, + { -1, 0, 0 } +}; + +static uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0 }; + +static int +alc_miibus_readreg(device_t dev, int phy, int reg) +{ + struct alc_softc *sc; + uint32_t v; + int i; + + sc = device_get_softc(dev); + + if (phy != sc->alc_phyaddr) + return (0); + + CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ | + MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg)); + for (i = ALC_PHY_TIMEOUT; i > 0; i--) { + DELAY(5); + v = CSR_READ_4(sc, ALC_MDIO); + if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0) + break; + } + + if (i == 0) { + device_printf(sc->alc_dev, "phy read timeout : %d\n", reg); + return (0); + } + + return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT); +} + +static int +alc_miibus_writereg(device_t dev, int phy, int reg, int val) +{ + struct alc_softc *sc; + uint32_t v; + int i; + + sc = device_get_softc(dev); + + if (phy != sc->alc_phyaddr) + return (0); + + CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE | + (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT | + MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg)); + for (i = ALC_PHY_TIMEOUT; i > 0; i--) { + DELAY(5); + v = CSR_READ_4(sc, ALC_MDIO); + if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0) + break; + } + + if (i == 0) + device_printf(sc->alc_dev, "phy write timeout : %d\n", reg); + + return (0); +} + +static void +alc_miibus_statchg(device_t dev) +{ + struct alc_softc *sc; + struct mii_data *mii; + struct ifnet *ifp; + uint32_t reg; + + sc = device_get_softc(dev); + + mii = device_get_softc(sc->alc_miibus); + ifp = sc->alc_ifp; + if (mii == NULL || ifp == NULL || + (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) + return; + + sc->alc_flags &= ~ALC_FLAG_LINK; + if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == + (IFM_ACTIVE | IFM_AVALID)) { + switch (IFM_SUBTYPE(mii->mii_media_active)) { + case IFM_10_T: + case IFM_100_TX: + sc->alc_flags |= ALC_FLAG_LINK; + break; + case IFM_1000_T: + if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0) + sc->alc_flags |= ALC_FLAG_LINK; + break; + default: + break; + } + } + alc_stop_queue(sc); + /* Stop Rx/Tx MACs. */ + alc_stop_mac(sc); + + /* Program MACs with resolved speed/duplex/flow-control. */ + if ((sc->alc_flags & ALC_FLAG_LINK) != 0) { + alc_start_queue(sc); + alc_mac_config(sc); + /* Re-enable Tx/Rx MACs. */ + reg = CSR_READ_4(sc, ALC_MAC_CFG); + reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB; + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); + } + alc_aspm(sc); +} + +static void +alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) +{ + struct alc_softc *sc; + struct mii_data *mii; + + sc = ifp->if_softc; + ALC_LOCK(sc); + if ((ifp->if_flags & IFF_UP) == 0) { + ALC_UNLOCK(sc); + return; + } + mii = device_get_softc(sc->alc_miibus); + + mii_pollstat(mii); + ALC_UNLOCK(sc); + ifmr->ifm_status = mii->mii_media_status; + ifmr->ifm_active = mii->mii_media_active; +} + +static int +alc_mediachange(struct ifnet *ifp) +{ + struct alc_softc *sc; + struct mii_data *mii; + struct mii_softc *miisc; + int error; + + sc = ifp->if_softc; + ALC_LOCK(sc); + mii = device_get_softc(sc->alc_miibus); + if (mii->mii_instance != 0) { + LIST_FOREACH(miisc, &mii->mii_phys, mii_list) + mii_phy_reset(miisc); + } + error = mii_mediachg(mii); + ALC_UNLOCK(sc); + + return (error); +} + +static int +alc_probe(device_t dev) +{ + struct alc_dev *sp; + int i; + uint16_t vendor, devid; + + vendor = pci_get_vendor(dev); + devid = pci_get_device(dev); + sp = alc_devs; + for (i = 0; i < sizeof(alc_devs) / sizeof(alc_devs[0]); i++) { + if (vendor == sp->alc_vendorid && + devid == sp->alc_deviceid) { + device_set_desc(dev, sp->alc_name); + return (BUS_PROBE_DEFAULT); + } + sp++; + } + + return (ENXIO); +} + +static void +alc_get_macaddr(struct alc_softc *sc) +{ + uint32_t ea[2], opt; + int i; + + opt = CSR_READ_4(sc, ALC_OPT_CFG); + if ((CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) { + /* + * EEPROM found, let TWSI reload EEPROM configuration. + * This will set ethernet address of controller. + */ + if ((opt & OPT_CFG_CLK_ENB) == 0) { + opt |= OPT_CFG_CLK_ENB; + CSR_WRITE_4(sc, ALC_OPT_CFG, opt); + CSR_READ_4(sc, ALC_OPT_CFG); + DELAY(1000); + } + CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) | + TWSI_CFG_SW_LD_START); + for (i = 100; i > 0; i--) { + DELAY(1000); + if ((CSR_READ_4(sc, ALC_TWSI_CFG) & + TWSI_CFG_SW_LD_START) == 0) + break; + } + if (i == 0) + device_printf(sc->alc_dev, + "reloading EEPROM timeout!\n"); + } else { + if (bootverbose) + device_printf(sc->alc_dev, "EEPROM not found!\n"); + } + if ((opt & OPT_CFG_CLK_ENB) != 0) { + opt &= ~OPT_CFG_CLK_ENB; + CSR_WRITE_4(sc, ALC_OPT_CFG, opt); + CSR_READ_4(sc, ALC_OPT_CFG); + DELAY(1000); + } + + ea[0] = CSR_READ_4(sc, ALC_PAR0); + ea[1] = CSR_READ_4(sc, ALC_PAR1); + sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF; + sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF; + sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF; + sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF; + sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF; + sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF; +} + +static void +alc_disable_l0s_l1(struct alc_softc *sc) +{ + uint32_t pmcfg; + + /* Another magic from vendor. */ + pmcfg = CSR_READ_4(sc, ALC_PM_CFG); + pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 | + PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK | + PM_CFG_SERDES_PD_EX_L1); + pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB | + PM_CFG_SERDES_L1_ENB; + CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg); +} + +static void +alc_phy_reset(struct alc_softc *sc) +{ + uint16_t data; + + /* Reset magic from Linux. */ + CSR_WRITE_2(sc, ALC_GPHY_CFG, + GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET); + CSR_READ_2(sc, ALC_GPHY_CFG); + DELAY(10 * 1000); + + CSR_WRITE_2(sc, ALC_GPHY_CFG, + GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | + GPHY_CFG_SEL_ANA_RESET); + CSR_READ_2(sc, ALC_GPHY_CFG); + DELAY(10 * 1000); + + /* Load DSP codes, vendor magic. */ + data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE | + ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_ADDR, MII_ANA_CFG18); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_DATA, data); + + data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) | + ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL | + ANA_SERDES_EN_LCKDT; + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_ADDR, MII_ANA_CFG5); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_DATA, data); + + data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) & + ANA_LONG_CABLE_TH_100_MASK) | + ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) & + ANA_SHORT_CABLE_TH_100_SHIFT) | + ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW; + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_ADDR, MII_ANA_CFG54); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_DATA, data); + + data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) | + ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) | + ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) | + ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_ADDR, MII_ANA_CFG4); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_DATA, data); + + data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) | + ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB | + ANA_OEN_125M; + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_ADDR, MII_ANA_CFG0); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + ALC_MII_DBG_DATA, data); + DELAY(1000); +} + +static void +alc_phy_down(struct alc_softc *sc) +{ + + /* Force PHY down. */ + CSR_WRITE_2(sc, ALC_GPHY_CFG, + GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | + GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW); + DELAY(1000); +} + +static void +alc_aspm(struct alc_softc *sc) +{ + uint32_t pmcfg; + + ALC_LOCK_ASSERT(sc); + + pmcfg = CSR_READ_4(sc, ALC_PM_CFG); + pmcfg &= ~PM_CFG_SERDES_PD_EX_L1; + pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB; + pmcfg |= PM_CFG_SERDES_L1_ENB; + pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK; + pmcfg |= PM_CFG_MAC_ASPM_CHK; + if ((sc->alc_flags & ALC_FLAG_LINK) != 0) { + pmcfg |= PM_CFG_SERDES_PLL_L1_ENB; + pmcfg &= ~PM_CFG_CLK_SWH_L1; + pmcfg &= ~PM_CFG_ASPM_L1_ENB; + pmcfg &= ~PM_CFG_ASPM_L0S_ENB; + } else { + pmcfg &= ~PM_CFG_SERDES_PLL_L1_ENB; + pmcfg |= PM_CFG_CLK_SWH_L1; + pmcfg &= ~PM_CFG_ASPM_L1_ENB; + pmcfg &= ~PM_CFG_ASPM_L0S_ENB; + } + CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg); +} + +static int +alc_attach(device_t dev) +{ + struct alc_softc *sc; + struct ifnet *ifp; + char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/l1" }; + uint16_t burst; + int base, error, i, msic, msixc, pmc, state; + uint32_t cap, ctl, val; + + error = 0; + sc = device_get_softc(dev); + sc->alc_dev = dev; + + mtx_init(&sc->alc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, + MTX_DEF); + callout_init_mtx(&sc->alc_tick_ch, &sc->alc_mtx, 0); + TASK_INIT(&sc->alc_int_task, 0, alc_int_task, sc); + + /* Map the device. */ + pci_enable_busmaster(dev); + sc->alc_res_spec = alc_res_spec_mem; + sc->alc_irq_spec = alc_irq_spec_legacy; + error = bus_alloc_resources(dev, sc->alc_res_spec, sc->alc_res); + if (error != 0) { + device_printf(dev, "cannot allocate memory resources.\n"); + goto fail; + } + + /* Set PHY address. */ + sc->alc_phyaddr = ALC_PHY_ADDR; + + /* Initialize DMA parameters. */ + sc->alc_dma_rd_burst = 0; + sc->alc_dma_wr_burst = 0; + sc->alc_rcb = DMA_CFG_RCB_64; + if (pci_find_extcap(dev, PCIY_EXPRESS, &base) == 0) { + sc->alc_flags |= ALC_FLAG_PCIE; + burst = CSR_READ_2(sc, base + PCIR_EXPRESS_DEVICE_CTL); + sc->alc_dma_rd_burst = + (burst & PCIM_EXP_CTL_MAX_READ_REQUEST) >> 12; + sc->alc_dma_wr_burst = (burst & PCIM_EXP_CTL_MAX_PAYLOAD) >> 5; + if (bootverbose) { + device_printf(dev, "Read request size : %u bytes.\n", + alc_dma_burst[sc->alc_dma_rd_burst]); + device_printf(dev, "TLP payload size : %u bytes.\n", + alc_dma_burst[sc->alc_dma_wr_burst]); + } + /* Clear data link and flow-control protocol error. */ + val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV); + val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP); + CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val); + /* Disable ASPM L0S and L1. */ + cap = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CAP); + if ((cap & PCIM_LINK_CAP_ASPM) != 0) { + ctl = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CTL); + if ((ctl & 0x08) != 0) + sc->alc_rcb = DMA_CFG_RCB_128; + if (bootverbose) + device_printf(dev, "RCB %u bytes\n", + sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128); + state = ctl & 0x03; + if (bootverbose) + device_printf(sc->alc_dev, "ASPM %s %s\n", + aspm_state[state], + state == 0 ? "disabled" : "enabled"); + if (state != 0) + alc_disable_l0s_l1(sc); + } + } + + /* Reset PHY. */ + alc_phy_reset(sc); + + /* Reset the ethernet controller. */ + alc_reset(sc); + + /* + * One odd thing is AR8132 uses the same PHY hardware(F1 + * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports + * the PHY supports 1000Mbps but that's not true. The PHY + * used in AR8132 can't establish gigabit link even if it + * shows the same PHY model/revision number of AR8131. + */ + if (pci_get_device(dev) == DEVICEID_ATHEROS_AR8132) + sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_JUMBO; + else + sc->alc_flags |= ALC_FLAG_JUMBO | ALC_FLAG_ASPM_MON; + /* + * It seems that AR8131/AR8132 has silicon bug for SMB. In + * addition, Atheros said that enabling SMB wouldn't improve + * performance. However I think it's bad to access lots of + * registers to extract MAC statistics. + */ + sc->alc_flags |= ALC_FLAG_SMB_BUG; + /* + * Don't use Tx CMB. It is known to have silicon bug. + */ + sc->alc_flags |= ALC_FLAG_CMB_BUG; + sc->alc_rev = pci_get_revid(dev); + sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >> + MASTER_CHIP_REV_SHIFT; + if (bootverbose) { + device_printf(dev, "PCI device revision : 0x%04x\n", + sc->alc_rev); + device_printf(dev, "Chip id/revision : 0x%04x\n", + sc->alc_chip_rev); + } + device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n", + CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8, + CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8); + + /* Allocate IRQ resources. */ + msixc = pci_msix_count(dev); + msic = pci_msi_count(dev); + if (bootverbose) { + device_printf(dev, "MSIX count : %d\n", msixc); + device_printf(dev, "MSI count : %d\n", msic); + } + /* Prefer MSIX over MSI. */ + if (msix_disable == 0 || msi_disable == 0) { + if (msix_disable == 0 && msixc == ALC_MSIX_MESSAGES && + pci_alloc_msix(dev, &msixc) == 0) { + if (msic == ALC_MSIX_MESSAGES) { + device_printf(dev, + "Using %d MSIX message(s).\n", msixc); + sc->alc_flags |= ALC_FLAG_MSIX; + sc->alc_irq_spec = alc_irq_spec_msix; + } else + pci_release_msi(dev); + } + if (msi_disable == 0 && (sc->alc_flags & ALC_FLAG_MSIX) == 0 && + msic == ALC_MSI_MESSAGES && + pci_alloc_msi(dev, &msic) == 0) { + if (msic == ALC_MSI_MESSAGES) { + device_printf(dev, + "Using %d MSI message(s).\n", msic); + sc->alc_flags |= ALC_FLAG_MSI; + sc->alc_irq_spec = alc_irq_spec_msi; + } else + pci_release_msi(dev); + } + } + + error = bus_alloc_resources(dev, sc->alc_irq_spec, sc->alc_irq); + if (error != 0) { + device_printf(dev, "cannot allocate IRQ resources.\n"); + goto fail; + } + + /* Create device sysctl node. */ + alc_sysctl_node(sc); + + if ((error = alc_dma_alloc(sc) != 0)) + goto fail; + + /* Load station address. */ + alc_get_macaddr(sc); + + ifp = sc->alc_ifp = if_alloc(IFT_ETHER); + if (ifp == NULL) { + device_printf(dev, "cannot allocate ifnet structure.\n"); + error = ENXIO; + goto fail; + } + + ifp->if_softc = sc; + if_initname(ifp, device_get_name(dev), device_get_unit(dev)); + ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; + ifp->if_ioctl = alc_ioctl; + ifp->if_start = alc_start; + ifp->if_init = alc_init; + ifp->if_snd.ifq_drv_maxlen = ALC_TX_RING_CNT - 1; + IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen); + IFQ_SET_READY(&ifp->if_snd); + ifp->if_capabilities = IFCAP_TXCSUM | IFCAP_TSO4; + ifp->if_hwassist = ALC_CSUM_FEATURES | CSUM_TSO; + if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) + ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST; + ifp->if_capenable = ifp->if_capabilities; + + /* Set up MII bus. */ + if ((error = mii_phy_probe(dev, &sc->alc_miibus, alc_mediachange, + alc_mediastatus)) != 0) { + device_printf(dev, "no PHY found!\n"); + goto fail; + } + + ether_ifattach(ifp, sc->alc_eaddr); + + /* VLAN capability setup. */ + ifp->if_capabilities |= IFCAP_VLAN_MTU; + ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM; + ifp->if_capenable = ifp->if_capabilities; + /* + * XXX + * It seems enabling Tx checksum offloading makes more trouble. + * Sometimes the controller does not receive any frames when + * Tx checksum offloading is enabled. I'm not sure whether this + * is a bug in Tx checksum offloading logic or I got broken + * sample boards. To safety, don't enable Tx checksum offloading + * by default but give chance to users to toggle it if they know + * their controllers work without problems. + */ + ifp->if_capenable &= ~IFCAP_TXCSUM; + ifp->if_hwassist &= ~ALC_CSUM_FEATURES; + + /* Tell the upper layer(s) we support long frames. */ + ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); + + /* Create local taskq. */ + TASK_INIT(&sc->alc_tx_task, 1, alc_tx_task, ifp); + sc->alc_tq = taskqueue_create_fast("alc_taskq", M_WAITOK, + taskqueue_thread_enqueue, &sc->alc_tq); + if (sc->alc_tq == NULL) { + device_printf(dev, "could not create taskqueue.\n"); + ether_ifdetach(ifp); + error = ENXIO; + goto fail; + } + taskqueue_start_threads(&sc->alc_tq, 1, PI_NET, "%s taskq", + device_get_nameunit(sc->alc_dev)); + + if ((sc->alc_flags & ALC_FLAG_MSIX) != 0) + msic = ALC_MSIX_MESSAGES; + else if ((sc->alc_flags & ALC_FLAG_MSI) != 0) + msic = ALC_MSI_MESSAGES; + else + msic = 1; + for (i = 0; i < msic; i++) { + error = bus_setup_intr(dev, sc->alc_irq[i], + INTR_TYPE_NET | INTR_MPSAFE, alc_intr, NULL, sc, + &sc->alc_intrhand[i]); + if (error != 0) + break; + } + if (error != 0) { + device_printf(dev, "could not set up interrupt handler.\n"); + taskqueue_free(sc->alc_tq); + sc->alc_tq = NULL; + ether_ifdetach(ifp); + goto fail; + } + +fail: + if (error != 0) + alc_detach(dev); + + return (error); +} + +static int +alc_detach(device_t dev) +{ + struct alc_softc *sc; + struct ifnet *ifp; + int i, msic; + + sc = device_get_softc(dev); + + ifp = sc->alc_ifp; + if (device_is_attached(dev)) { + ALC_LOCK(sc); + sc->alc_flags |= ALC_FLAG_DETACH; + alc_stop(sc); + ALC_UNLOCK(sc); + callout_drain(&sc->alc_tick_ch); + taskqueue_drain(sc->alc_tq, &sc->alc_int_task); + taskqueue_drain(sc->alc_tq, &sc->alc_tx_task); + ether_ifdetach(ifp); + } + + if (sc->alc_tq != NULL) { + taskqueue_drain(sc->alc_tq, &sc->alc_int_task); + taskqueue_free(sc->alc_tq); + sc->alc_tq = NULL; + } + + if (sc->alc_miibus != NULL) { + device_delete_child(dev, sc->alc_miibus); + sc->alc_miibus = NULL; + } + bus_generic_detach(dev); + alc_dma_free(sc); + + if (ifp != NULL) { + if_free(ifp); + sc->alc_ifp = NULL; + } + + if ((sc->alc_flags & ALC_FLAG_MSIX) != 0) + msic = ALC_MSIX_MESSAGES; + else if ((sc->alc_flags & ALC_FLAG_MSI) != 0) + msic = ALC_MSI_MESSAGES; + else + msic = 1; + for (i = 0; i < msic; i++) { + if (sc->alc_intrhand[i] != NULL) { + bus_teardown_intr(dev, sc->alc_irq[i], + sc->alc_intrhand[i]); + sc->alc_intrhand[i] = NULL; + } + } + alc_phy_down(sc); + bus_release_resources(dev, sc->alc_irq_spec, sc->alc_irq); + if ((sc->alc_flags & (ALC_FLAG_MSI | ALC_FLAG_MSIX)) != 0) + pci_release_msi(dev); + bus_release_resources(dev, sc->alc_res_spec, sc->alc_res); + mtx_destroy(&sc->alc_mtx); + + return (0); +} + +#define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \ + SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d) +#define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \ + SYSCTL_ADD_QUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, d) + +static void +alc_sysctl_node(struct alc_softc *sc) +{ + struct sysctl_ctx_list *ctx; + struct sysctl_oid_list *child, *parent; + struct sysctl_oid *tree; + struct alc_hw_stats *stats; + int error; + + stats = &sc->alc_stats; + ctx = device_get_sysctl_ctx(sc->alc_dev); + child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev)); + + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod", + CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0, + sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation"); + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod", + CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0, + sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation"); + /* Pull in device tunables. */ + sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT; + error = resource_int_value(device_get_name(sc->alc_dev), + device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod); + if (error == 0) { + if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN || + sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) { + device_printf(sc->alc_dev, "int_rx_mod value out of " + "range; using default: %d\n", + ALC_IM_RX_TIMER_DEFAULT); + sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT; + } + } + sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT; + error = resource_int_value(device_get_name(sc->alc_dev), + device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod); + if (error == 0) { + if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN || + sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) { + device_printf(sc->alc_dev, "int_tx_mod value out of " + "range; using default: %d\n", + ALC_IM_TX_TIMER_DEFAULT); + sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT; + } + } + SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit", + CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0, + sysctl_hw_alc_proc_limit, "I", + "max number of Rx events to process"); + /* Pull in device tunables. */ + sc->alc_process_limit = ALC_PROC_DEFAULT; + error = resource_int_value(device_get_name(sc->alc_dev), + device_get_unit(sc->alc_dev), "process_limit", + &sc->alc_process_limit); + if (error == 0) { + if (sc->alc_process_limit < ALC_PROC_MIN || + sc->alc_process_limit > ALC_PROC_MAX) { + device_printf(sc->alc_dev, + "process_limit value out of range; " + "using default: %d\n", ALC_PROC_DEFAULT); + sc->alc_process_limit = ALC_PROC_DEFAULT; + } + } + + tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD, + NULL, "ALC statistics"); + parent = SYSCTL_CHILDREN(tree); + + /* Rx statistics. */ + tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD, + NULL, "Rx MAC statistics"); + child = SYSCTL_CHILDREN(tree); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames", + &stats->rx_frames, "Good frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames", + &stats->rx_bcast_frames, "Good broadcast frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames", + &stats->rx_mcast_frames, "Good multicast frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames", + &stats->rx_pause_frames, "Pause control frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames", + &stats->rx_control_frames, "Control frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs", + &stats->rx_crcerrs, "CRC errors"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs", + &stats->rx_lenerrs, "Frames with length mismatched"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets", + &stats->rx_bytes, "Good octets"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets", + &stats->rx_bcast_bytes, "Good broadcast octets"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets", + &stats->rx_mcast_bytes, "Good multicast octets"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "runts", + &stats->rx_runts, "Too short frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments", + &stats->rx_fragments, "Fragmented frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64", + &stats->rx_pkts_64, "64 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127", + &stats->rx_pkts_65_127, "65 to 127 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255", + &stats->rx_pkts_128_255, "128 to 255 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511", + &stats->rx_pkts_256_511, "256 to 511 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023", + &stats->rx_pkts_512_1023, "512 to 1023 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518", + &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max", + &stats->rx_pkts_1519_max, "1519 to max frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs", + &stats->rx_pkts_truncated, "Truncated frames due to MTU size"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows", + &stats->rx_fifo_oflows, "FIFO overflows"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs", + &stats->rx_rrs_errs, "Return status write-back errors"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs", + &stats->rx_alignerrs, "Alignment errors"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered", + &stats->rx_pkts_filtered, + "Frames dropped due to address filtering"); + + /* Tx statistics. */ + tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD, + NULL, "Tx MAC statistics"); + child = SYSCTL_CHILDREN(tree); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames", + &stats->tx_frames, "Good frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames", + &stats->tx_bcast_frames, "Good broadcast frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames", + &stats->tx_mcast_frames, "Good multicast frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames", + &stats->tx_pause_frames, "Pause control frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames", + &stats->tx_control_frames, "Control frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers", + &stats->tx_excess_defer, "Frames with excessive derferrals"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "defers", + &stats->tx_excess_defer, "Frames with derferrals"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets", + &stats->tx_bytes, "Good octets"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets", + &stats->tx_bcast_bytes, "Good broadcast octets"); + ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets", + &stats->tx_mcast_bytes, "Good multicast octets"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64", + &stats->tx_pkts_64, "64 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127", + &stats->tx_pkts_65_127, "65 to 127 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255", + &stats->tx_pkts_128_255, "128 to 255 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511", + &stats->tx_pkts_256_511, "256 to 511 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023", + &stats->tx_pkts_512_1023, "512 to 1023 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518", + &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max", + &stats->tx_pkts_1519_max, "1519 to max frames"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls", + &stats->tx_single_colls, "Single collisions"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls", + &stats->tx_multi_colls, "Multiple collisions"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls", + &stats->tx_late_colls, "Late collisions"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls", + &stats->tx_excess_colls, "Excessive collisions"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "abort", + &stats->tx_abort, "Aborted frames due to Excessive collisions"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns", + &stats->tx_underrun, "FIFO underruns"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns", + &stats->tx_desc_underrun, "Descriptor write-back errors"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs", + &stats->tx_lenerrs, "Frames with length mismatched"); + ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs", + &stats->tx_pkts_truncated, "Truncated frames due to MTU size"); +} + +#undef ALC_SYSCTL_STAT_ADD32 +#undef ALC_SYSCTL_STAT_ADD64 + +struct alc_dmamap_arg { + bus_addr_t alc_busaddr; +}; + +static void +alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) +{ + struct alc_dmamap_arg *ctx; + + if (error != 0) + return; + + KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); + + ctx = (struct alc_dmamap_arg *)arg; + ctx->alc_busaddr = segs[0].ds_addr; +} + +/* + * Normal and high Tx descriptors shares single Tx high address. + * Four Rx descriptor/return rings and CMB shares the same Rx + * high address. + */ +static int +alc_check_boundary(struct alc_softc *sc) +{ + bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end; + + rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ; + rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ; + cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ; + tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ; + + /* 4GB boundary crossing is not allowed. */ + if ((ALC_ADDR_HI(rx_ring_end) != + ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) || + (ALC_ADDR_HI(rr_ring_end) != + ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) || + (ALC_ADDR_HI(cmb_end) != + ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) || + (ALC_ADDR_HI(tx_ring_end) != + ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr))) + return (EFBIG); + /* + * Make sure Rx return descriptor/Rx descriptor/CMB use + * the same high address. + */ + if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) || + (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end))) + return (EFBIG); + + return (0); +} + +static int +alc_dma_alloc(struct alc_softc *sc) +{ + struct alc_txdesc *txd; + struct alc_rxdesc *rxd; + bus_addr_t lowaddr; + struct alc_dmamap_arg ctx; + int error, i; + + lowaddr = BUS_SPACE_MAXADDR; +again: + /* Create parent DMA tag. */ + error = bus_dma_tag_create( + bus_get_dma_tag(sc->alc_dev), /* parent */ + 1, 0, /* alignment, boundary */ + lowaddr, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ + 0, /* nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_parent_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create parent DMA tag.\n"); + goto fail; + } + + /* Create DMA tag for Tx descriptor ring. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_parent_tag, /* parent */ + ALC_TX_RING_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_TX_RING_SZ, /* maxsize */ + 1, /* nsegments */ + ALC_TX_RING_SZ, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_tx_ring_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create Tx ring DMA tag.\n"); + goto fail; + } + + /* Create DMA tag for Rx free descriptor ring. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_parent_tag, /* parent */ + ALC_RX_RING_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_RX_RING_SZ, /* maxsize */ + 1, /* nsegments */ + ALC_RX_RING_SZ, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_rx_ring_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create Rx ring DMA tag.\n"); + goto fail; + } + /* Create DMA tag for Rx return descriptor ring. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_parent_tag, /* parent */ + ALC_RR_RING_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_RR_RING_SZ, /* maxsize */ + 1, /* nsegments */ + ALC_RR_RING_SZ, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_rr_ring_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create Rx return ring DMA tag.\n"); + goto fail; + } + + /* Create DMA tag for coalescing message block. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_parent_tag, /* parent */ + ALC_CMB_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_CMB_SZ, /* maxsize */ + 1, /* nsegments */ + ALC_CMB_SZ, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_cmb_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create CMB DMA tag.\n"); + goto fail; + } + /* Create DMA tag for status message block. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_parent_tag, /* parent */ + ALC_SMB_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_SMB_SZ, /* maxsize */ + 1, /* nsegments */ + ALC_SMB_SZ, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_smb_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create SMB DMA tag.\n"); + goto fail; + } + + /* Allocate DMA'able memory and load the DMA map for Tx ring. */ + error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag, + (void **)&sc->alc_rdata.alc_tx_ring, + BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, + &sc->alc_cdata.alc_tx_ring_map); + if (error != 0) { + device_printf(sc->alc_dev, + "could not allocate DMA'able memory for Tx ring.\n"); + goto fail; + } + ctx.alc_busaddr = 0; + error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring, + ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0); + if (error != 0 || ctx.alc_busaddr == 0) { + device_printf(sc->alc_dev, + "could not load DMA'able memory for Tx ring.\n"); + goto fail; + } + sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr; + + /* Allocate DMA'able memory and load the DMA map for Rx ring. */ + error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag, + (void **)&sc->alc_rdata.alc_rx_ring, + BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, + &sc->alc_cdata.alc_rx_ring_map); + if (error != 0) { + device_printf(sc->alc_dev, + "could not allocate DMA'able memory for Rx ring.\n"); + goto fail; + } + ctx.alc_busaddr = 0; + error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag, + sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring, + ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0); + if (error != 0 || ctx.alc_busaddr == 0) { + device_printf(sc->alc_dev, + "could not load DMA'able memory for Rx ring.\n"); + goto fail; + } + sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr; + + /* Allocate DMA'able memory and load the DMA map for Rx return ring. */ + error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag, + (void **)&sc->alc_rdata.alc_rr_ring, + BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, + &sc->alc_cdata.alc_rr_ring_map); + if (error != 0) { + device_printf(sc->alc_dev, + "could not allocate DMA'able memory for Rx return ring.\n"); + goto fail; + } + ctx.alc_busaddr = 0; + error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring, + ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0); + if (error != 0 || ctx.alc_busaddr == 0) { + device_printf(sc->alc_dev, + "could not load DMA'able memory for Tx ring.\n"); + goto fail; + } + sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr; + + /* Allocate DMA'able memory and load the DMA map for CMB. */ + error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag, + (void **)&sc->alc_rdata.alc_cmb, + BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, + &sc->alc_cdata.alc_cmb_map); + if (error != 0) { + device_printf(sc->alc_dev, + "could not allocate DMA'able memory for CMB.\n"); + goto fail; + } + ctx.alc_busaddr = 0; + error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag, + sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb, + ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0); + if (error != 0 || ctx.alc_busaddr == 0) { + device_printf(sc->alc_dev, + "could not load DMA'able memory for CMB.\n"); + goto fail; + } + sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr; + + /* Allocate DMA'able memory and load the DMA map for SMB. */ + error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag, + (void **)&sc->alc_rdata.alc_smb, + BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, + &sc->alc_cdata.alc_smb_map); + if (error != 0) { + device_printf(sc->alc_dev, + "could not allocate DMA'able memory for SMB.\n"); + goto fail; + } + ctx.alc_busaddr = 0; + error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb, + ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0); + if (error != 0 || ctx.alc_busaddr == 0) { + device_printf(sc->alc_dev, + "could not load DMA'able memory for CMB.\n"); + goto fail; + } + sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr; + + /* Make sure we've not crossed 4GB boundary. */ + if (lowaddr != BUS_SPACE_MAXADDR_32BIT && + (error = alc_check_boundary(sc)) != 0) { + device_printf(sc->alc_dev, "4GB boundary crossed, " + "switching to 32bit DMA addressing mode.\n"); + alc_dma_free(sc); + /* + * Limit max allowable DMA address space to 32bit + * and try again. + */ + lowaddr = BUS_SPACE_MAXADDR_32BIT; + goto again; + } + + /* + * Create Tx buffer parent tag. + * AR8131/AR8132 allows 64bit DMA addressing of Tx/Rx buffers + * so it needs separate parent DMA tag as parent DMA address + * space could be restricted to be within 32bit address space + * by 4GB boundary crossing. + */ + error = bus_dma_tag_create( + bus_get_dma_tag(sc->alc_dev), /* parent */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ + 0, /* nsegments */ + BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_buffer_tag); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create parent buffer DMA tag.\n"); + goto fail; + } + + /* Create DMA tag for Tx buffers. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_buffer_tag, /* parent */ + 1, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + ALC_TSO_MAXSIZE, /* maxsize */ + ALC_MAXTXSEGS, /* nsegments */ + ALC_TSO_MAXSEGSIZE, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_tx_tag); + if (error != 0) { + device_printf(sc->alc_dev, "could not create Tx DMA tag.\n"); + goto fail; + } + + /* Create DMA tag for Rx buffers. */ + error = bus_dma_tag_create( + sc->alc_cdata.alc_buffer_tag, /* parent */ + ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */ + BUS_SPACE_MAXADDR, /* lowaddr */ + BUS_SPACE_MAXADDR, /* highaddr */ + NULL, NULL, /* filter, filterarg */ + MCLBYTES, /* maxsize */ + 1, /* nsegments */ + MCLBYTES, /* maxsegsize */ + 0, /* flags */ + NULL, NULL, /* lockfunc, lockarg */ + &sc->alc_cdata.alc_rx_tag); + if (error != 0) { + device_printf(sc->alc_dev, "could not create Rx DMA tag.\n"); + goto fail; + } + /* Create DMA maps for Tx buffers. */ + for (i = 0; i < ALC_TX_RING_CNT; i++) { + txd = &sc->alc_cdata.alc_txdesc[i]; + txd->tx_m = NULL; + txd->tx_dmamap = NULL; + error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag, 0, + &txd->tx_dmamap); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create Tx dmamap.\n"); + goto fail; + } + } + /* Create DMA maps for Rx buffers. */ + if ((error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0, + &sc->alc_cdata.alc_rx_sparemap)) != 0) { + device_printf(sc->alc_dev, + "could not create spare Rx dmamap.\n"); + goto fail; + } + for (i = 0; i < ALC_RX_RING_CNT; i++) { + rxd = &sc->alc_cdata.alc_rxdesc[i]; + rxd->rx_m = NULL; + rxd->rx_dmamap = NULL; + error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag, 0, + &rxd->rx_dmamap); + if (error != 0) { + device_printf(sc->alc_dev, + "could not create Rx dmamap.\n"); + goto fail; + } + } + +fail: + return (error); +} + +static void +alc_dma_free(struct alc_softc *sc) +{ + struct alc_txdesc *txd; + struct alc_rxdesc *rxd; + int i; + + /* Tx buffers. */ + if (sc->alc_cdata.alc_tx_tag != NULL) { + for (i = 0; i < ALC_TX_RING_CNT; i++) { + txd = &sc->alc_cdata.alc_txdesc[i]; + if (txd->tx_dmamap != NULL) { + bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag, + txd->tx_dmamap); + txd->tx_dmamap = NULL; + } + } + bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag); + sc->alc_cdata.alc_tx_tag = NULL; + } + /* Rx buffers */ + if (sc->alc_cdata.alc_rx_tag != NULL) { + for (i = 0; i < ALC_RX_RING_CNT; i++) { + rxd = &sc->alc_cdata.alc_rxdesc[i]; + if (rxd->rx_dmamap != NULL) { + bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag, + rxd->rx_dmamap); + rxd->rx_dmamap = NULL; + } + } + if (sc->alc_cdata.alc_rx_sparemap != NULL) { + bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag, + sc->alc_cdata.alc_rx_sparemap); + sc->alc_cdata.alc_rx_sparemap = NULL; + } + bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag); + sc->alc_cdata.alc_rx_tag = NULL; + } + /* Tx descriptor ring. */ + if (sc->alc_cdata.alc_tx_ring_tag != NULL) { + if (sc->alc_cdata.alc_tx_ring_map != NULL) + bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_cdata.alc_tx_ring_map); + if (sc->alc_cdata.alc_tx_ring_map != NULL && + sc->alc_rdata.alc_tx_ring != NULL) + bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_rdata.alc_tx_ring, + sc->alc_cdata.alc_tx_ring_map); + sc->alc_rdata.alc_tx_ring = NULL; + sc->alc_cdata.alc_tx_ring_map = NULL; + bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag); + sc->alc_cdata.alc_tx_ring_tag = NULL; + } + /* Rx return ring. */ + if (sc->alc_cdata.alc_rr_ring_tag != NULL) { + if (sc->alc_cdata.alc_rr_ring_map != NULL) + bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_cdata.alc_rr_ring_map); + if (sc->alc_cdata.alc_rr_ring_map != NULL && + sc->alc_rdata.alc_rr_ring != NULL) + bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_rdata.alc_rr_ring, + sc->alc_cdata.alc_rr_ring_map); + sc->alc_rdata.alc_rr_ring = NULL; + sc->alc_cdata.alc_rr_ring_map = NULL; + bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag); + sc->alc_cdata.alc_rr_ring_tag = NULL; + } + /* CMB block */ + if (sc->alc_cdata.alc_cmb_tag != NULL) { + if (sc->alc_cdata.alc_cmb_map != NULL) + bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag, + sc->alc_cdata.alc_cmb_map); + if (sc->alc_cdata.alc_cmb_map != NULL && + sc->alc_rdata.alc_cmb != NULL) + bus_dmamem_free(sc->alc_cdata.alc_cmb_tag, + sc->alc_rdata.alc_cmb, + sc->alc_cdata.alc_cmb_map); + sc->alc_rdata.alc_cmb = NULL; + sc->alc_cdata.alc_cmb_map = NULL; + bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag); + sc->alc_cdata.alc_cmb_tag = NULL; + } + /* SMB block */ + if (sc->alc_cdata.alc_smb_tag != NULL) { + if (sc->alc_cdata.alc_smb_map != NULL) + bus_dmamap_unload(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map); + if (sc->alc_cdata.alc_smb_map != NULL && + sc->alc_rdata.alc_smb != NULL) + bus_dmamem_free(sc->alc_cdata.alc_smb_tag, + sc->alc_rdata.alc_smb, + sc->alc_cdata.alc_smb_map); + sc->alc_rdata.alc_smb = NULL; + sc->alc_cdata.alc_smb_map = NULL; + bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag); + sc->alc_cdata.alc_smb_tag = NULL; + } + if (sc->alc_cdata.alc_buffer_tag != NULL) { + bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag); + sc->alc_cdata.alc_buffer_tag = NULL; + } + if (sc->alc_cdata.alc_parent_tag != NULL) { + bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag); + sc->alc_cdata.alc_parent_tag = NULL; + } +} + +static int +alc_shutdown(device_t dev) +{ + + return (alc_suspend(dev)); +} + +/* + * Note, this driver resets the link speed to 10/100Mbps by + * restarting auto-negotiation in suspend/shutdown phase but we + * don't know whether that auto-negotiation would succeed or not + * as driver has no control after powering off/suspend operation. + * If the renegotiation fail WOL may not work. Running at 1Gbps + * will draw more power than 375mA at 3.3V which is specified in + * PCI specification and that would result in complete + * shutdowning power to ethernet controller. + * + * TODO + * Save current negotiated media speed/duplex/flow-control to + * softc and restore the same link again after resuming. PHY + * handling such as power down/resetting to 100Mbps may be better + * handled in suspend method in phy driver. + */ +static void +alc_setlinkspeed(struct alc_softc *sc) +{ + struct mii_data *mii; + int aneg, i; + + mii = device_get_softc(sc->alc_miibus); + mii_pollstat(mii); + aneg = 0; + if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == + (IFM_ACTIVE | IFM_AVALID)) { + switch IFM_SUBTYPE(mii->mii_media_active) { + case IFM_10_T: + case IFM_100_TX: + return; + case IFM_1000_T: + aneg++; + break; + default: + break; + } + } + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA); + alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, + MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG); + DELAY(1000); + if (aneg != 0) { + /* + * Poll link state until alc(4) get a 10/100Mbps link. + */ + for (i = 0; i < MII_ANEGTICKS_GIGE; i++) { + mii_pollstat(mii); + if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) + == (IFM_ACTIVE | IFM_AVALID)) { + switch (IFM_SUBTYPE( + mii->mii_media_active)) { + case IFM_10_T: + case IFM_100_TX: + alc_mac_config(sc); + return; + default: + break; + } + } + ALC_UNLOCK(sc); + pause("alclnk", hz); + ALC_LOCK(sc); + } + if (i == MII_ANEGTICKS_GIGE) + device_printf(sc->alc_dev, + "establishing a link failed, WOL may not work!"); + } + /* + * No link, force MAC to have 100Mbps, full-duplex link. + * This is the last resort and may/may not work. + */ + mii->mii_media_status = IFM_AVALID | IFM_ACTIVE; + mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX; + alc_mac_config(sc); +} + +static void +alc_setwol(struct alc_softc *sc) +{ + struct ifnet *ifp; + uint32_t cap, reg, pmcs; + uint16_t pmstat; + int base, pmc; + + ALC_LOCK_ASSERT(sc); + + if (pci_find_extcap(sc->alc_dev, PCIY_EXPRESS, &base) == 0) { + cap = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CAP); + if ((cap & PCIM_LINK_CAP_ASPM) != 0) { + cap = CSR_READ_2(sc, base + PCIR_EXPRESS_LINK_CTL); + alc_disable_l0s_l1(sc); + } + } + if (pci_find_extcap(sc->alc_dev, PCIY_PMG, &pmc) != 0) { + /* Disable WOL. */ + CSR_WRITE_4(sc, ALC_WOL_CFG, 0); + reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC); + reg |= PCIE_PHYMISC_FORCE_RCV_DET; + CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg); + /* Force PHY power down. */ + alc_phy_down(sc); + return; + } + + ifp = sc->alc_ifp; + if ((ifp->if_capenable & IFCAP_WOL) != 0) { + if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0) + alc_setlinkspeed(sc); + reg = CSR_READ_4(sc, ALC_MASTER_CFG); + reg &= ~MASTER_CLK_SEL_DIS; + CSR_WRITE_4(sc, ALC_MASTER_CFG, reg); + } + + pmcs = 0; + if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) + pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB; + CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs); + reg = CSR_READ_4(sc, ALC_MAC_CFG); + reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI | + MAC_CFG_BCAST); + if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0) + reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST; + if ((ifp->if_capenable & IFCAP_WOL) != 0) + reg |= MAC_CFG_RX_ENB; + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); + + reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC); + reg |= PCIE_PHYMISC_FORCE_RCV_DET; + CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg); + if ((ifp->if_capenable & IFCAP_WOL) == 0) { + /* WOL disabled, PHY power down. */ + alc_phy_down(sc); + } + /* Request PME. */ + pmstat = pci_read_config(sc->alc_dev, pmc + PCIR_POWER_STATUS, 2); + pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); + if ((ifp->if_capenable & IFCAP_WOL) != 0) + pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; + pci_write_config(sc->alc_dev, pmc + PCIR_POWER_STATUS, pmstat, 2); +} + +static int +alc_suspend(device_t dev) +{ + struct alc_softc *sc; + + sc = device_get_softc(dev); + + ALC_LOCK(sc); + alc_stop(sc); + alc_setwol(sc); + ALC_UNLOCK(sc); + + return (0); +} + +static int +alc_resume(device_t dev) +{ + struct alc_softc *sc; + struct ifnet *ifp; + int pmc; + uint16_t pmstat; + + sc = device_get_softc(dev); + + ALC_LOCK(sc); + if (pci_find_extcap(sc->alc_dev, PCIY_PMG, &pmc) == 0) { + /* Disable PME and clear PME status. */ + pmstat = pci_read_config(sc->alc_dev, + pmc + PCIR_POWER_STATUS, 2); + if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) { + pmstat &= ~PCIM_PSTAT_PMEENABLE; + pci_write_config(sc->alc_dev, + pmc + PCIR_POWER_STATUS, pmstat, 2); + } + } + /* Reset PHY. */ + alc_phy_reset(sc); + ifp = sc->alc_ifp; + if ((ifp->if_flags & IFF_UP) != 0) { + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + alc_init_locked(sc); + } + ALC_UNLOCK(sc); + + return (0); +} + +static int +alc_encap(struct alc_softc *sc, struct mbuf **m_head) +{ + struct alc_txdesc *txd, *txd_last; + struct tx_desc *desc; + struct mbuf *m; + struct ip *ip; + struct tcphdr *tcp; + bus_dma_segment_t txsegs[ALC_MAXTXSEGS]; + bus_dmamap_t map; + uint32_t cflags, hdrlen, ip_off, poff, vtag; + int error, idx, nsegs, prod; + + ALC_LOCK_ASSERT(sc); + + M_ASSERTPKTHDR((*m_head)); + + m = *m_head; + ip = NULL; + tcp = NULL; + ip_off = poff = 0; + if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) { + /* + * AR8131/AR8132 requires offset of TCP/UDP header in its + * Tx descriptor to perform Tx checksum offloading. TSO + * also requires TCP header offset and modification of + * IP/TCP header. This kind of operation takes many CPU + * cycles on FreeBSD so fast host CPU is required to get + * smooth TSO performance. + */ + struct ether_header *eh; + + if (M_WRITABLE(m) == 0) { + /* Get a writable copy. */ + m = m_dup(*m_head, M_DONTWAIT); + /* Release original mbufs. */ + m_freem(*m_head); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + *m_head = m; + } + + ip_off = sizeof(struct ether_header); + m = m_pullup(m, ip_off); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + eh = mtod(m, struct ether_header *); + /* + * Check if hardware VLAN insertion is off. + * Additional check for LLC/SNAP frame? + */ + if (eh->ether_type == htons(ETHERTYPE_VLAN)) { + ip_off = sizeof(struct ether_vlan_header); + m = m_pullup(m, ip_off); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + } + m = m_pullup(m, ip_off + sizeof(struct ip)); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + ip = (struct ip *)(mtod(m, char *) + ip_off); + poff = ip_off + (ip->ip_hl << 2); + if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) { + m = m_pullup(m, poff + sizeof(struct tcphdr)); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + tcp = (struct tcphdr *)(mtod(m, char *) + poff); + m = m_pullup(m, poff + (tcp->th_off << 2)); + if (m == NULL) { + *m_head = NULL; + return (ENOBUFS); + } + /* + * Due to strict adherence of Microsoft NDIS + * Large Send specification, hardware expects + * a pseudo TCP checksum inserted by upper + * stack. Unfortunately the pseudo TCP + * checksum that NDIS refers to does not include + * TCP payload length so driver should recompute + * the pseudo checksum here. Hopefully this + * wouldn't be much burden on modern CPUs. + * + * Reset IP checksum and recompute TCP pseudo + * checksum as NDIS specification said. + */ + ip->ip_sum = 0; + tcp->th_sum = in_pseudo(ip->ip_src.s_addr, + ip->ip_dst.s_addr, htons(IPPROTO_TCP)); + } + *m_head = m; + } + + prod = sc->alc_cdata.alc_tx_prod; + txd = &sc->alc_cdata.alc_txdesc[prod]; + txd_last = txd; + map = txd->tx_dmamap; + + error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map, + *m_head, txsegs, &nsegs, 0); + if (error == EFBIG) { + m = m_collapse(*m_head, M_DONTWAIT, ALC_MAXTXSEGS); + if (m == NULL) { + m_freem(*m_head); + *m_head = NULL; + return (ENOMEM); + } + *m_head = m; + error = bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_tx_tag, map, + *m_head, txsegs, &nsegs, 0); + if (error != 0) { + m_freem(*m_head); + *m_head = NULL; + return (error); + } + } else if (error != 0) + return (error); + if (nsegs == 0) { + m_freem(*m_head); + *m_head = NULL; + return (EIO); + } + + /* Check descriptor overrun. */ + if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) { + bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map); + return (ENOBUFS); + } + bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE); + + m = *m_head; + cflags = TD_ETHERNET; + vtag = 0; + desc = NULL; + idx = 0; + /* Configure VLAN hardware tag insertion. */ + if ((m->m_flags & M_VLANTAG) != 0) { + vtag = htons(m->m_pkthdr.ether_vtag); + vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK; + cflags |= TD_INS_VLAN_TAG; + } + /* Configure Tx checksum offload. */ + if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) { +#ifdef ALC_USE_CUSTOM_CSUM + cflags |= TD_CUSTOM_CSUM; + /* Set checksum start offset. */ + cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) & + TD_PLOAD_OFFSET_MASK; + /* Set checksum insertion position of TCP/UDP. */ + cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) << + TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK; +#else + if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0) + cflags |= TD_IPCSUM; + if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0) + cflags |= TD_TCPCSUM; + if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0) + cflags |= TD_UDPCSUM; + /* Set TCP/UDP header offset. */ + cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) & + TD_L4HDR_OFFSET_MASK; +#endif + } else if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) { + /* Request TSO and set MSS. */ + cflags |= TD_TSO | TD_TSO_DESCV1; + cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) & + TD_MSS_MASK; + /* Set TCP header offset. */ + cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) & + TD_TCPHDR_OFFSET_MASK; + /* + * AR8131/AR8132 requires the first buffer should + * only hold IP/TCP header data. Payload should + * be handled in other descriptors. + */ + hdrlen = poff + (tcp->th_off << 2); + desc = &sc->alc_rdata.alc_tx_ring[prod]; + desc->len = htole32(TX_BYTES(hdrlen | vtag)); + desc->flags = htole32(cflags); + desc->addr = htole64(txsegs[0].ds_addr); + sc->alc_cdata.alc_tx_cnt++; + ALC_DESC_INC(prod, ALC_TX_RING_CNT); + if (m->m_len - hdrlen > 0) { + /* Handle remaining payload of the first fragment. */ + desc = &sc->alc_rdata.alc_tx_ring[prod]; + desc->len = htole32(TX_BYTES((m->m_len - hdrlen) | + vtag)); + desc->flags = htole32(cflags); + desc->addr = htole64(txsegs[0].ds_addr + hdrlen); + sc->alc_cdata.alc_tx_cnt++; + ALC_DESC_INC(prod, ALC_TX_RING_CNT); + } + /* Handle remaining fragments. */ + idx = 1; + } + for (; idx < nsegs; idx++) { + desc = &sc->alc_rdata.alc_tx_ring[prod]; + desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag); + desc->flags = htole32(cflags); + desc->addr = htole64(txsegs[idx].ds_addr); + sc->alc_cdata.alc_tx_cnt++; + ALC_DESC_INC(prod, ALC_TX_RING_CNT); + } + /* Update producer index. */ + sc->alc_cdata.alc_tx_prod = prod; + + /* Finally set EOP on the last descriptor. */ + prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT; + desc = &sc->alc_rdata.alc_tx_ring[prod]; + desc->flags |= htole32(TD_EOP); + + /* Swap dmamap of the first and the last. */ + txd = &sc->alc_cdata.alc_txdesc[prod]; + map = txd_last->tx_dmamap; + txd_last->tx_dmamap = txd->tx_dmamap; + txd->tx_dmamap = map; + txd->tx_m = m; + + return (0); +} + +static void +alc_tx_task(void *arg, int pending) +{ + struct ifnet *ifp; + + ifp = (struct ifnet *)arg; + alc_start(ifp); +} + +static void +alc_start(struct ifnet *ifp) +{ + struct alc_softc *sc; + struct mbuf *m_head; + int enq; + + sc = ifp->if_softc; + + ALC_LOCK(sc); + + /* Reclaim transmitted frames. */ + if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT) + alc_txeof(sc); + + if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != + IFF_DRV_RUNNING || (sc->alc_flags & ALC_FLAG_LINK) == 0) { + ALC_UNLOCK(sc); + return; + } + + for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) { + IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); + if (m_head == NULL) + break; + /* + * Pack the data into the transmit ring. If we + * don't have room, set the OACTIVE flag and wait + * for the NIC to drain the ring. + */ + if (alc_encap(sc, &m_head)) { + if (m_head == NULL) + break; + IFQ_DRV_PREPEND(&ifp->if_snd, m_head); + ifp->if_drv_flags |= IFF_DRV_OACTIVE; + break; + } + + enq++; + /* + * If there's a BPF listener, bounce a copy of this frame + * to him. + */ + ETHER_BPF_MTAP(ifp, m_head); + } + + if (enq > 0) { + /* Sync descriptors. */ + bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE); + /* Kick. Assume we're using normal Tx priority queue. */ + CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX, + (sc->alc_cdata.alc_tx_prod << + MBOX_TD_PROD_LO_IDX_SHIFT) & + MBOX_TD_PROD_LO_IDX_MASK); + /* Set a timeout in case the chip goes out to lunch. */ + sc->alc_watchdog_timer = ALC_TX_TIMEOUT; + } + + ALC_UNLOCK(sc); +} + +static void +alc_watchdog(struct alc_softc *sc) +{ + struct ifnet *ifp; + + ALC_LOCK_ASSERT(sc); + + if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer) + return; + + ifp = sc->alc_ifp; + if ((sc->alc_flags & ALC_FLAG_LINK) == 0) { + if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n"); + ifp->if_oerrors++; + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + alc_init_locked(sc); + return; + } + if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n"); + ifp->if_oerrors++; + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + alc_init_locked(sc); + if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) + taskqueue_enqueue(sc->alc_tq, &sc->alc_tx_task); +} + +static int +alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) +{ + struct alc_softc *sc; + struct ifreq *ifr; + struct mii_data *mii; + int error, mask; + + sc = ifp->if_softc; + ifr = (struct ifreq *)data; + error = 0; + switch (cmd) { + case SIOCSIFMTU: + if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ALC_JUMBO_MTU || + ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 && + ifr->ifr_mtu > ETHERMTU)) + error = EINVAL; + else if (ifp->if_mtu != ifr->ifr_mtu) { + ALC_LOCK(sc); + ifp->if_mtu = ifr->ifr_mtu; + /* AR8131/AR8132 has 13 bits MSS field. */ + if (ifp->if_mtu > ALC_TSO_MTU && + (ifp->if_capenable & IFCAP_TSO4) != 0) { + ifp->if_capenable &= ~IFCAP_TSO4; + ifp->if_hwassist &= ~CSUM_TSO; + } + ALC_UNLOCK(sc); + } + break; + case SIOCSIFFLAGS: + ALC_LOCK(sc); + if ((ifp->if_flags & IFF_UP) != 0) { + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 && + ((ifp->if_flags ^ sc->alc_if_flags) & + (IFF_PROMISC | IFF_ALLMULTI)) != 0) + alc_rxfilter(sc); + else if ((sc->alc_flags & ALC_FLAG_DETACH) == 0) + alc_init_locked(sc); + } else if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) + alc_stop(sc); + sc->alc_if_flags = ifp->if_flags; + ALC_UNLOCK(sc); + break; + case SIOCADDMULTI: + case SIOCDELMULTI: + ALC_LOCK(sc); + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) + alc_rxfilter(sc); + ALC_UNLOCK(sc); + break; + case SIOCSIFMEDIA: + case SIOCGIFMEDIA: + mii = device_get_softc(sc->alc_miibus); + error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); + break; + case SIOCSIFCAP: + ALC_LOCK(sc); + mask = ifr->ifr_reqcap ^ ifp->if_capenable; + if ((mask & IFCAP_TXCSUM) != 0 && + (ifp->if_capabilities & IFCAP_TXCSUM) != 0) { + ifp->if_capenable ^= IFCAP_TXCSUM; + if ((ifp->if_capenable & IFCAP_TXCSUM) != 0) + ifp->if_hwassist |= ALC_CSUM_FEATURES; + else + ifp->if_hwassist &= ~ALC_CSUM_FEATURES; + } + if ((mask & IFCAP_TSO4) != 0 && + (ifp->if_capabilities & IFCAP_TSO4) != 0) { + ifp->if_capenable ^= IFCAP_TSO4; + if ((ifp->if_capenable & IFCAP_TSO4) != 0) { + /* AR8131/AR8132 has 13 bits MSS field. */ + if (ifp->if_mtu > ALC_TSO_MTU) { + ifp->if_capenable &= ~IFCAP_TSO4; + ifp->if_hwassist &= ~CSUM_TSO; + } else + ifp->if_hwassist |= CSUM_TSO; + } else + ifp->if_hwassist &= ~CSUM_TSO; + } + if ((mask & IFCAP_WOL_MCAST) != 0 && + (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0) + ifp->if_capenable ^= IFCAP_WOL_MCAST; + if ((mask & IFCAP_WOL_MAGIC) != 0 && + (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0) + ifp->if_capenable ^= IFCAP_WOL_MAGIC; + if ((mask & IFCAP_VLAN_HWTAGGING) != 0 && + (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) { + ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; + alc_rxvlan(sc); + } + if ((mask & IFCAP_VLAN_HWCSUM) != 0 && + (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0) + ifp->if_capenable ^= IFCAP_VLAN_HWCSUM; + if ((mask & IFCAP_VLAN_HWTSO) != 0 && + (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0) + ifp->if_capenable ^= IFCAP_VLAN_HWTSO; + /* + * VLAN hardware tagging is required to do checksum + * offload or TSO on VLAN interface. Checksum offload + * on VLAN interface also requires hardware checksum + * offload of parent interface. + */ + if ((ifp->if_capenable & IFCAP_TXCSUM) == 0) + ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM; + if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0) + ifp->if_capenable &= + ~(IFCAP_VLAN_HWTSO | IFCAP_VLAN_HWCSUM); + ALC_UNLOCK(sc); + VLAN_CAPABILITIES(ifp); + break; + default: + error = ether_ioctl(ifp, cmd, data); + break; + } + + return (error); +} + +static void +alc_mac_config(struct alc_softc *sc) +{ + struct mii_data *mii; + uint32_t reg; + + ALC_LOCK_ASSERT(sc); + + mii = device_get_softc(sc->alc_miibus); + reg = CSR_READ_4(sc, ALC_MAC_CFG); + reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC | + MAC_CFG_SPEED_MASK); + /* Reprogram MAC with resolved speed/duplex. */ + switch (IFM_SUBTYPE(mii->mii_media_active)) { + case IFM_10_T: + case IFM_100_TX: + reg |= MAC_CFG_SPEED_10_100; + break; + case IFM_1000_T: + reg |= MAC_CFG_SPEED_1000; + break; + } + if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { + reg |= MAC_CFG_FULL_DUPLEX; +#ifdef notyet + if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) + reg |= MAC_CFG_TX_FC; + if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) + reg |= MAC_CFG_RX_FC; +#endif + } + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); +} + +static void +alc_stats_clear(struct alc_softc *sc) +{ + struct smb sb, *smb; + uint32_t *reg; + int i; + + if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { + bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map, + BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + smb = sc->alc_rdata.alc_smb; + /* Update done, clear. */ + smb->updated = 0; + bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + } else { + for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered; + reg++) { + CSR_READ_4(sc, ALC_RX_MIB_BASE + i); + i += sizeof(uint32_t); + } + /* Read Tx statistics. */ + for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes; + reg++) { + CSR_READ_4(sc, ALC_TX_MIB_BASE + i); + i += sizeof(uint32_t); + } + } +} + +static void +alc_stats_update(struct alc_softc *sc) +{ + struct alc_hw_stats *stat; + struct smb sb, *smb; + struct ifnet *ifp; + uint32_t *reg; + int i; + + ALC_LOCK_ASSERT(sc); + + ifp = sc->alc_ifp; + stat = &sc->alc_stats; + if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { + bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map, + BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + smb = sc->alc_rdata.alc_smb; + if (smb->updated == 0) + return; + } else { + smb = &sb; + /* Read Rx statistics. */ + for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered; + reg++) { + *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i); + i += sizeof(uint32_t); + } + /* Read Tx statistics. */ + for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes; + reg++) { + *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i); + i += sizeof(uint32_t); + } + } + + /* Rx stats. */ + stat->rx_frames += smb->rx_frames; + stat->rx_bcast_frames += smb->rx_bcast_frames; + stat->rx_mcast_frames += smb->rx_mcast_frames; + stat->rx_pause_frames += smb->rx_pause_frames; + stat->rx_control_frames += smb->rx_control_frames; + stat->rx_crcerrs += smb->rx_crcerrs; + stat->rx_lenerrs += smb->rx_lenerrs; + stat->rx_bytes += smb->rx_bytes; + stat->rx_runts += smb->rx_runts; + stat->rx_fragments += smb->rx_fragments; + stat->rx_pkts_64 += smb->rx_pkts_64; + stat->rx_pkts_65_127 += smb->rx_pkts_65_127; + stat->rx_pkts_128_255 += smb->rx_pkts_128_255; + stat->rx_pkts_256_511 += smb->rx_pkts_256_511; + stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023; + stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518; + stat->rx_pkts_1519_max += smb->rx_pkts_1519_max; + stat->rx_pkts_truncated += smb->rx_pkts_truncated; + stat->rx_fifo_oflows += smb->rx_fifo_oflows; + stat->rx_rrs_errs += smb->rx_rrs_errs; + stat->rx_alignerrs += smb->rx_alignerrs; + stat->rx_bcast_bytes += smb->rx_bcast_bytes; + stat->rx_mcast_bytes += smb->rx_mcast_bytes; + stat->rx_pkts_filtered += smb->rx_pkts_filtered; + + /* Tx stats. */ + stat->tx_frames += smb->tx_frames; + stat->tx_bcast_frames += smb->tx_bcast_frames; + stat->tx_mcast_frames += smb->tx_mcast_frames; + stat->tx_pause_frames += smb->tx_pause_frames; + stat->tx_excess_defer += smb->tx_excess_defer; + stat->tx_control_frames += smb->tx_control_frames; + stat->tx_deferred += smb->tx_deferred; + stat->tx_bytes += smb->tx_bytes; + stat->tx_pkts_64 += smb->tx_pkts_64; + stat->tx_pkts_65_127 += smb->tx_pkts_65_127; + stat->tx_pkts_128_255 += smb->tx_pkts_128_255; + stat->tx_pkts_256_511 += smb->tx_pkts_256_511; + stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023; + stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518; + stat->tx_pkts_1519_max += smb->tx_pkts_1519_max; + stat->tx_single_colls += smb->tx_single_colls; + stat->tx_multi_colls += smb->tx_multi_colls; + stat->tx_late_colls += smb->tx_late_colls; + stat->tx_excess_colls += smb->tx_excess_colls; + stat->tx_abort += smb->tx_abort; + stat->tx_underrun += smb->tx_underrun; + stat->tx_desc_underrun += smb->tx_desc_underrun; + stat->tx_lenerrs += smb->tx_lenerrs; + stat->tx_pkts_truncated += smb->tx_pkts_truncated; + stat->tx_bcast_bytes += smb->tx_bcast_bytes; + stat->tx_mcast_bytes += smb->tx_mcast_bytes; + + /* Update counters in ifnet. */ + ifp->if_opackets += smb->tx_frames; + + ifp->if_collisions += smb->tx_single_colls + + smb->tx_multi_colls * 2 + smb->tx_late_colls + + smb->tx_abort * HDPX_CFG_RETRY_DEFAULT; + + /* + * XXX + * tx_pkts_truncated counter looks suspicious. It constantly + * increments with no sign of Tx errors. This may indicate + * the counter name is not correct one so I've removed the + * counter in output errors. + */ + ifp->if_oerrors += smb->tx_abort + smb->tx_late_colls + + smb->tx_underrun; + + ifp->if_ipackets += smb->rx_frames; + + ifp->if_ierrors += smb->rx_crcerrs + smb->rx_lenerrs + + smb->rx_runts + smb->rx_pkts_truncated + + smb->rx_fifo_oflows + smb->rx_rrs_errs + + smb->rx_alignerrs; + + if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { + /* Update done, clear. */ + smb->updated = 0; + bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, + sc->alc_cdata.alc_smb_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + } +} + +static int +alc_intr(void *arg) +{ + struct alc_softc *sc; + uint32_t status; + + sc = (struct alc_softc *)arg; + + status = CSR_READ_4(sc, ALC_INTR_STATUS); + if ((status & ALC_INTRS) == 0) + return (FILTER_STRAY); + /* Disable interrupts. */ + CSR_WRITE_4(sc, ALC_INTR_STATUS, INTR_DIS_INT); + taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task); + + return (FILTER_HANDLED); +} + +static void +alc_int_task(void *arg, int pending) +{ + struct alc_softc *sc; + struct ifnet *ifp; + uint32_t status; + int more; + + sc = (struct alc_softc *)arg; + ifp = sc->alc_ifp; + + status = CSR_READ_4(sc, ALC_INTR_STATUS); + more = atomic_readandclear_int(&sc->alc_morework); + if (more != 0) + status |= INTR_RX_PKT; + if ((status & ALC_INTRS) == 0) + goto done; + + /* Acknowledge interrupts but still disable interrupts. */ + CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT); + + more = 0; + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { + if ((status & INTR_RX_PKT) != 0) { + more = alc_rxintr(sc, sc->alc_process_limit); + if (more == EAGAIN) + atomic_set_int(&sc->alc_morework, 1); + else if (more == EIO) { + ALC_LOCK(sc); + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + alc_init_locked(sc); + ALC_UNLOCK(sc); + return; + } + } + if ((status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST | + INTR_TXQ_TO_RST)) != 0) { + if ((status & INTR_DMA_RD_TO_RST) != 0) + device_printf(sc->alc_dev, + "DMA read error! -- resetting\n"); + if ((status & INTR_DMA_WR_TO_RST) != 0) + device_printf(sc->alc_dev, + "DMA write error! -- resetting\n"); + if ((status & INTR_TXQ_TO_RST) != 0) + device_printf(sc->alc_dev, + "TxQ reset! -- resetting\n"); + ALC_LOCK(sc); + ifp->if_drv_flags &= ~IFF_DRV_RUNNING; + alc_init_locked(sc); + ALC_UNLOCK(sc); + return; + } + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0 && + !IFQ_DRV_IS_EMPTY(&ifp->if_snd)) + taskqueue_enqueue(sc->alc_tq, &sc->alc_tx_task); + } + + if (more == EAGAIN || + (CSR_READ_4(sc, ALC_INTR_STATUS) & ALC_INTRS) != 0) { + taskqueue_enqueue(sc->alc_tq, &sc->alc_int_task); + return; + } + +done: + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { + /* Re-enable interrupts if we're running. */ + CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF); + } +} + +static void +alc_txeof(struct alc_softc *sc) +{ + struct ifnet *ifp; + struct alc_txdesc *txd; + uint32_t cons, prod; + int prog; + + ALC_LOCK_ASSERT(sc); + + ifp = sc->alc_ifp; + + if (sc->alc_cdata.alc_tx_cnt == 0) + return; + bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE); + if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) { + bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, + sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD); + prod = sc->alc_rdata.alc_cmb->cons; + } else + prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX); + /* Assume we're using normal Tx priority queue. */ + prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >> + MBOX_TD_CONS_LO_IDX_SHIFT; + cons = sc->alc_cdata.alc_tx_cons; + /* + * Go through our Tx list and free mbufs for those + * frames which have been transmitted. + */ + for (prog = 0; cons != prod; prog++, + ALC_DESC_INC(cons, ALC_TX_RING_CNT)) { + if (sc->alc_cdata.alc_tx_cnt <= 0) + break; + prog++; + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; + sc->alc_cdata.alc_tx_cnt--; + txd = &sc->alc_cdata.alc_txdesc[cons]; + if (txd->tx_m != NULL) { + /* Reclaim transmitted mbufs. */ + bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, + txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, + txd->tx_dmamap); + m_freem(txd->tx_m); + txd->tx_m = NULL; + } + } + + if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) + bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, + sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD); + sc->alc_cdata.alc_tx_cons = cons; + /* + * Unarm watchdog timer only when there is no pending + * frames in Tx queue. + */ + if (sc->alc_cdata.alc_tx_cnt == 0) + sc->alc_watchdog_timer = 0; +} + +static int +alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd) +{ + struct mbuf *m; + bus_dma_segment_t segs[1]; + bus_dmamap_t map; + int nsegs; + + m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); + if (m == NULL) + return (ENOBUFS); + m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX; +#ifndef __NO_STRICT_ALIGNMENT + m_adj(m, sizeof(uint64_t)); +#endif + + if (bus_dmamap_load_mbuf_sg(sc->alc_cdata.alc_rx_tag, + sc->alc_cdata.alc_rx_sparemap, m, segs, &nsegs, 0) != 0) { + m_freem(m); + return (ENOBUFS); + } + KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); + + if (rxd->rx_m != NULL) { + bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap, + BUS_DMASYNC_POSTREAD); + bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap); + } + map = rxd->rx_dmamap; + rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap; + sc->alc_cdata.alc_rx_sparemap = map; + bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap, + BUS_DMASYNC_PREREAD); + rxd->rx_m = m; + rxd->rx_desc->addr = htole64(segs[0].ds_addr); + return (0); +} + +static int +alc_rxintr(struct alc_softc *sc, int count) +{ + struct ifnet *ifp; + struct rx_rdesc *rrd; + uint32_t nsegs, status; + int rr_cons, prog; + + bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_cdata.alc_rr_ring_map, + BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); + bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag, + sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE); + rr_cons = sc->alc_cdata.alc_rr_cons; + ifp = sc->alc_ifp; + for (prog = 0; (ifp->if_drv_flags & IFF_DRV_RUNNING) != 0;) { + if (count-- <= 0) + break; + rrd = &sc->alc_rdata.alc_rr_ring[rr_cons]; + status = le32toh(rrd->status); + if ((status & RRD_VALID) == 0) + break; + nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo)); + if (nsegs == 0) { + /* This should not happen! */ + device_printf(sc->alc_dev, + "unexpected segment count -- resetting\n"); + return (EIO); + } + alc_rxeof(sc, rrd); + /* Clear Rx return status. */ + rrd->status = 0; + ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT); + sc->alc_cdata.alc_rx_cons += nsegs; + sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT; + prog += nsegs; + } + + if (prog > 0) { + /* Update the consumer index. */ + sc->alc_cdata.alc_rr_cons = rr_cons; + /* Sync Rx return descriptors. */ + bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_cdata.alc_rr_ring_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + /* + * Sync updated Rx descriptors such that controller see + * modified buffer addresses. + */ + bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag, + sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE); + /* + * Let controller know availability of new Rx buffers. + * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors + * it may be possible to update ALC_MBOX_RD0_PROD_IDX + * only when Rx buffer pre-fetching is required. In + * addition we already set ALC_RX_RD_FREE_THRESH to + * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However + * it still seems that pre-fetching needs more + * experimentation. + */ + CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, + sc->alc_cdata.alc_rx_cons); + } + + return (count > 0 ? 0 : EAGAIN); +} + +#ifndef __NO_STRICT_ALIGNMENT +static struct mbuf * +alc_fixup_rx(struct ifnet *ifp, struct mbuf *m) +{ + struct mbuf *n; + int i; + uint16_t *src, *dst; + + src = mtod(m, uint16_t *); + dst = src - 3; + + if (m->m_next == NULL) { + for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++) + *dst++ = *src++; + m->m_data -= 6; + return (m); + } + /* + * Append a new mbuf to received mbuf chain and copy ethernet + * header from the mbuf chain. This can save lots of CPU + * cycles for jumbo frame. + */ + MGETHDR(n, M_DONTWAIT, MT_DATA); + if (n == NULL) { + ifp->if_iqdrops++; + m_freem(m); + return (NULL); + } + bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); + m->m_data += ETHER_HDR_LEN; + m->m_len -= ETHER_HDR_LEN; + n->m_len = ETHER_HDR_LEN; + M_MOVE_PKTHDR(n, m); + n->m_next = m; + return (n); +} +#endif + +/* Receive a frame. */ +static void +alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd) +{ + struct alc_rxdesc *rxd; + struct ifnet *ifp; + struct mbuf *mp, *m; + uint32_t rdinfo, status, vtag; + int count, nsegs, rx_cons; + + ifp = sc->alc_ifp; + status = le32toh(rrd->status); + rdinfo = le32toh(rrd->rdinfo); + rx_cons = RRD_RD_IDX(rdinfo); + nsegs = RRD_RD_CNT(rdinfo); + + sc->alc_cdata.alc_rxlen = RRD_BYTES(status); + if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) { + /* + * We want to pass the following frames to upper + * layer regardless of error status of Rx return + * ring. + * + * o IP/TCP/UDP checksum is bad. + * o frame length and protocol specific length + * does not match. + * + * Force network stack compute checksum for + * errored frames. + */ + status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK; + if ((RRD_ERR_CRC | RRD_ERR_ALIGN | RRD_ERR_TRUNC | + RRD_ERR_RUNT) != 0) + return; + } + + for (count = 0; count < nsegs; count++, + ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) { + rxd = &sc->alc_cdata.alc_rxdesc[rx_cons]; + mp = rxd->rx_m; + /* Add a new receive buffer to the ring. */ + if (alc_newbuf(sc, rxd) != 0) { + ifp->if_iqdrops++; + /* Reuse Rx buffers. */ + if (sc->alc_cdata.alc_rxhead != NULL) + m_freem(sc->alc_cdata.alc_rxhead); + break; + } + + /* + * Assume we've received a full sized frame. + * Actual size is fixed when we encounter the end of + * multi-segmented frame. + */ + mp->m_len = sc->alc_buf_size; + + /* Chain received mbufs. */ + if (sc->alc_cdata.alc_rxhead == NULL) { + sc->alc_cdata.alc_rxhead = mp; + sc->alc_cdata.alc_rxtail = mp; + } else { + mp->m_flags &= ~M_PKTHDR; + sc->alc_cdata.alc_rxprev_tail = + sc->alc_cdata.alc_rxtail; + sc->alc_cdata.alc_rxtail->m_next = mp; + sc->alc_cdata.alc_rxtail = mp; + } + + if (count == nsegs - 1) { + /* Last desc. for this frame. */ + m = sc->alc_cdata.alc_rxhead; + m->m_flags |= M_PKTHDR; + /* + * It seems that L1C/L2C controller has no way + * to tell hardware to strip CRC bytes. + */ + m->m_pkthdr.len = + sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN; + if (nsegs > 1) { + /* Set last mbuf size. */ + mp->m_len = sc->alc_cdata.alc_rxlen - + (nsegs - 1) * sc->alc_buf_size; + /* Remove the CRC bytes in chained mbufs. */ + if (mp->m_len <= ETHER_CRC_LEN) { + sc->alc_cdata.alc_rxtail = + sc->alc_cdata.alc_rxprev_tail; + sc->alc_cdata.alc_rxtail->m_len -= + (ETHER_CRC_LEN - mp->m_len); + sc->alc_cdata.alc_rxtail->m_next = NULL; + m_freem(mp); + } else { + mp->m_len -= ETHER_CRC_LEN; + } + } else + m->m_len = m->m_pkthdr.len; + m->m_pkthdr.rcvif = ifp; + /* + * Due to hardware bugs, Rx checksum offloading + * was intentionally disabled. + */ + if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 && + (status & RRD_VLAN_TAG) != 0) { + vtag = RRD_VLAN(le32toh(rrd->vtag)); + m->m_pkthdr.ether_vtag = ntohs(vtag); + m->m_flags |= M_VLANTAG; + } +#ifndef __NO_STRICT_ALIGNMENT + m = alc_fixup_rx(ifp, m); + if (m != NULL) +#endif + { + /* Pass it on. */ + (*ifp->if_input)(ifp, m); + } + } + } + /* Reset mbuf chains. */ + ALC_RXCHAIN_RESET(sc); +} + +static void +alc_tick(void *arg) +{ + struct alc_softc *sc; + struct mii_data *mii; + + sc = (struct alc_softc *)arg; + + ALC_LOCK_ASSERT(sc); + + mii = device_get_softc(sc->alc_miibus); + mii_tick(mii); + alc_stats_update(sc); + /* + * alc(4) does not rely on Tx completion interrupts to reclaim + * transferred buffers. Instead Tx completion interrupts are + * used to hint for scheduling Tx task. So it's necessary to + * release transmitted buffers by kicking Tx completion + * handler. This limits the maximum reclamation delay to a hz. + */ + alc_txeof(sc); + alc_watchdog(sc); + callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc); +} + +static void +alc_reset(struct alc_softc *sc) +{ + uint32_t reg; + int i; + + CSR_WRITE_4(sc, ALC_MASTER_CFG, MASTER_RESET); + for (i = ALC_RESET_TIMEOUT; i > 0; i--) { + DELAY(10); + if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0) + break; + } + if (i == 0) + device_printf(sc->alc_dev, "master reset timeout!\n"); + + for (i = ALC_RESET_TIMEOUT; i > 0; i--) { + if ((reg = CSR_READ_4(sc, ALC_IDLE_STATUS)) == 0) + break; + DELAY(10); + } + + if (i == 0) + device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg); +} + +static void +alc_init(void *xsc) +{ + struct alc_softc *sc; + + sc = (struct alc_softc *)xsc; + ALC_LOCK(sc); + alc_init_locked(sc); + ALC_UNLOCK(sc); +} + +static void +alc_init_locked(struct alc_softc *sc) +{ + struct ifnet *ifp; + struct mii_data *mii; + uint8_t eaddr[ETHER_ADDR_LEN]; + bus_addr_t paddr; + uint32_t reg, rxf_hi, rxf_lo; + + ALC_LOCK_ASSERT(sc); + + ifp = sc->alc_ifp; + mii = device_get_softc(sc->alc_miibus); + + if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) + return; + /* + * Cancel any pending I/O. + */ + alc_stop(sc); + /* + * Reset the chip to a known state. + */ + alc_reset(sc); + + /* Initialize Rx descriptors. */ + if (alc_init_rx_ring(sc) != 0) { + device_printf(sc->alc_dev, "no memory for Rx buffers.\n"); + alc_stop(sc); + return; + } + alc_init_rr_ring(sc); + alc_init_tx_ring(sc); + alc_init_cmb(sc); + alc_init_smb(sc); + + /* Reprogram the station address. */ + bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN); + CSR_WRITE_4(sc, ALC_PAR0, + eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]); + CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]); + /* + * Clear WOL status and disable all WOL feature as WOL + * would interfere Rx operation under normal environments. + */ + CSR_READ_4(sc, ALC_WOL_CFG); + CSR_WRITE_4(sc, ALC_WOL_CFG, 0); + /* Set Tx descriptor base addresses. */ + paddr = sc->alc_rdata.alc_tx_ring_paddr; + CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); + CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); + /* We don't use high priority ring. */ + CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0); + /* Set Tx descriptor counter. */ + CSR_WRITE_4(sc, ALC_TD_RING_CNT, + (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK); + /* Set Rx descriptor base addresses. */ + paddr = sc->alc_rdata.alc_rx_ring_paddr; + CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); + CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); + /* We use one Rx ring. */ + CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0); + CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0); + CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0); + /* Set Rx descriptor counter. */ + CSR_WRITE_4(sc, ALC_RD_RING_CNT, + (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK); + + /* + * Let hardware split jumbo frames into alc_max_buf_sized chunks. + * if it do not fit the buffer size. Rx return descriptor holds + * a counter that indicates how many fragments were made by the + * hardware. The buffer size should be multiple of 8 bytes. + * Since hardware has limit on the size of buffer size, always + * use the maximum value. + * For strict-alignment architectures make sure to reduce buffer + * size by 8 bytes to make room for alignment fixup. + */ +#ifndef __NO_STRICT_ALIGNMENT + sc->alc_buf_size = RX_BUF_SIZE_MAX - sizeof(uint64_t); +#else + sc->alc_buf_size = RX_BUF_SIZE_MAX; +#endif + CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size); + + paddr = sc->alc_rdata.alc_rr_ring_paddr; + /* Set Rx return descriptor base addresses. */ + CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); + /* We use one Rx return ring. */ + CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0); + CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0); + CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0); + /* Set Rx return descriptor counter. */ + CSR_WRITE_4(sc, ALC_RRD_RING_CNT, + (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK); + paddr = sc->alc_rdata.alc_cmb_paddr; + CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr)); + paddr = sc->alc_rdata.alc_smb_paddr; + CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); + CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr)); + + /* Tell hardware that we're ready to load DMA blocks. */ + CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD); + + /* Configure interrupt moderation timer. */ + reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT; + reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT; + CSR_WRITE_4(sc, ALC_IM_TIMER, reg); + reg = CSR_READ_4(sc, ALC_MASTER_CFG); + reg &= ~(MASTER_CHIP_REV_MASK | MASTER_CHIP_ID_MASK); + /* + * We don't want to automatic interrupt clear as task queue + * for the interrupt should know interrupt status. + */ + reg &= ~MASTER_INTR_RD_CLR; + reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB); + if (ALC_USECS(sc->alc_int_rx_mod) != 0) + reg |= MASTER_IM_RX_TIMER_ENB; + if (ALC_USECS(sc->alc_int_tx_mod) != 0) + reg |= MASTER_IM_TX_TIMER_ENB; + CSR_WRITE_4(sc, ALC_MASTER_CFG, reg); + /* + * Disable interrupt re-trigger timer. We don't want automatic + * re-triggering of un-ACKed interrupts. + */ + CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0)); + /* Configure CMB. */ + CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4); + if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) + CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000)); + else + CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0)); + /* + * Hardware can be configured to issue SMB interrupt based + * on programmed interval. Since there is a callout that is + * invoked for every hz in driver we use that instead of + * relying on periodic SMB interrupt. + */ + CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0)); + /* Clear MAC statistics. */ + alc_stats_clear(sc); + + /* + * Always use maximum frame size that controller can support. + * Otherwise received frames that has larger frame length + * than alc(4) MTU would be silently dropped in hardware. This + * would make path-MTU discovery hard as sender wouldn't get + * any responses from receiver. alc(4) supports + * multi-fragmented frames on Rx path so it has no issue on + * assembling fragmented frames. Using maximum frame size also + * removes the need to reinitialize hardware when interface + * MTU configuration was changed. + * + * Be conservative in what you do, be liberal in what you + * accept from others - RFC 793. + */ + CSR_WRITE_4(sc, ALC_FRAME_SIZE, ALC_JUMBO_FRAMELEN); + + /* Disable header split(?) */ + CSR_WRITE_4(sc, ALC_HDS_CFG, 0); + + /* Configure IPG/IFG parameters. */ + CSR_WRITE_4(sc, ALC_IPG_IFG_CFG, + ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) & IPG_IFG_IPGT_MASK) | + ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) & IPG_IFG_MIFG_MASK) | + ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) & IPG_IFG_IPG1_MASK) | + ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) & IPG_IFG_IPG2_MASK)); + /* Set parameters for half-duplex media. */ + CSR_WRITE_4(sc, ALC_HDPX_CFG, + ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) & + HDPX_CFG_LCOL_MASK) | + ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) & + HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN | + ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) & + HDPX_CFG_ABEBT_MASK) | + ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) & + HDPX_CFG_JAMIPG_MASK)); + /* + * Set TSO/checksum offload threshold. For frames that is + * larger than this threshold, hardware wouldn't do + * TSO/checksum offloading. + */ + CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, + (ALC_JUMBO_FRAMELEN >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) & + TSO_OFFLOAD_THRESH_MASK); + /* Configure TxQ. */ + reg = (alc_dma_burst[sc->alc_dma_rd_burst] << + TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK; + reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) & + TXQ_CFG_TD_BURST_MASK; + CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE); + + /* Configure Rx free descriptor pre-fetching. */ + CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH, + ((RX_RD_FREE_THRESH_HI_DEFAULT << RX_RD_FREE_THRESH_HI_SHIFT) & + RX_RD_FREE_THRESH_HI_MASK) | + ((RX_RD_FREE_THRESH_LO_DEFAULT << RX_RD_FREE_THRESH_LO_SHIFT) & + RX_RD_FREE_THRESH_LO_MASK)); + + /* + * Configure flow control parameters. + * XON : 80% of Rx FIFO + * XOFF : 30% of Rx FIFO + */ + reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN); + rxf_hi = (reg * 8) / 10; + rxf_lo = (reg * 3)/ 10; + CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH, + ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) & + RX_FIFO_PAUSE_THRESH_LO_MASK) | + ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) & + RX_FIFO_PAUSE_THRESH_HI_MASK)); + + /* Disable RSS until I understand L1C/L2C's RSS logic. */ + CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0); + CSR_WRITE_4(sc, ALC_RSS_CPU, 0); + + /* Configure RxQ. */ + reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) & + RXQ_CFG_RD_BURST_MASK; + reg |= RXQ_CFG_RSS_MODE_DIS; + if ((sc->alc_flags & ALC_FLAG_ASPM_MON) != 0) + reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M; + CSR_WRITE_4(sc, ALC_RXQ_CFG, reg); + + /* Configure Rx DMAW request thresold. */ + CSR_WRITE_4(sc, ALC_RD_DMA_CFG, + ((RD_DMA_CFG_THRESH_DEFAULT << RD_DMA_CFG_THRESH_SHIFT) & + RD_DMA_CFG_THRESH_MASK) | + ((ALC_RD_DMA_CFG_USECS(0) << RD_DMA_CFG_TIMER_SHIFT) & + RD_DMA_CFG_TIMER_MASK)); + /* Configure DMA parameters. */ + reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI; + reg |= sc->alc_rcb; + if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) + reg |= DMA_CFG_CMB_ENB; + if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) + reg |= DMA_CFG_SMB_ENB; + else + reg |= DMA_CFG_SMB_DIS; + reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) << + DMA_CFG_RD_BURST_SHIFT; + reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) << + DMA_CFG_WR_BURST_SHIFT; + reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) & + DMA_CFG_RD_DELAY_CNT_MASK; + reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) & + DMA_CFG_WR_DELAY_CNT_MASK; + CSR_WRITE_4(sc, ALC_DMA_CFG, reg); + + /* + * Configure Tx/Rx MACs. + * - Auto-padding for short frames. + * - Enable CRC generation. + * Actual reconfiguration of MAC for resolved speed/duplex + * is followed after detection of link establishment. + * AR8131/AR8132 always does checksum computation regardless + * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to + * have bug in protocol field in Rx return structure so + * these controllers can't handle fragmented frames. Disable + * Rx checksum offloading until there is a newer controller + * that has sane implementation. + */ + reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX | + ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) & + MAC_CFG_PREAMBLE_MASK); + if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0) + reg |= MAC_CFG_SPEED_10_100; + else + reg |= MAC_CFG_SPEED_1000; + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); + + /* Set up the receive filter. */ + alc_rxfilter(sc); + alc_rxvlan(sc); + + /* Acknowledge all pending interrupts and clear it. */ + CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS); + CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); + CSR_WRITE_4(sc, ALC_INTR_STATUS, 0); + + sc->alc_flags &= ~ALC_FLAG_LINK; + /* Switch to the current media. */ + mii_mediachg(mii); + + callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc); + + ifp->if_drv_flags |= IFF_DRV_RUNNING; + ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; +} + +static void +alc_stop(struct alc_softc *sc) +{ + struct ifnet *ifp; + struct alc_txdesc *txd; + struct alc_rxdesc *rxd; + uint32_t reg; + int i; + + ALC_LOCK_ASSERT(sc); + /* + * Mark the interface down and cancel the watchdog timer. + */ + ifp = sc->alc_ifp; + ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); + sc->alc_flags &= ~ALC_FLAG_LINK; + callout_stop(&sc->alc_tick_ch); + sc->alc_watchdog_timer = 0; + alc_stats_update(sc); + /* Disable interrupts. */ + CSR_WRITE_4(sc, ALC_INTR_MASK, 0); + CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); + alc_stop_queue(sc); + /* Disable DMA. */ + reg = CSR_READ_4(sc, ALC_DMA_CFG); + reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB); + reg |= DMA_CFG_SMB_DIS; + CSR_WRITE_4(sc, ALC_DMA_CFG, reg); + DELAY(1000); + /* Stop Rx/Tx MACs. */ + alc_stop_mac(sc); + /* Disable interrupts which might be touched in taskq handler. */ + CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); + + /* Reclaim Rx buffers that have been processed. */ + if (sc->alc_cdata.alc_rxhead != NULL) + m_freem(sc->alc_cdata.alc_rxhead); + ALC_RXCHAIN_RESET(sc); + /* + * Free Tx/Rx mbufs still in the queues. + */ + for (i = 0; i < ALC_RX_RING_CNT; i++) { + rxd = &sc->alc_cdata.alc_rxdesc[i]; + if (rxd->rx_m != NULL) { + bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, + rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); + bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, + rxd->rx_dmamap); + m_freem(rxd->rx_m); + rxd->rx_m = NULL; + } + } + for (i = 0; i < ALC_TX_RING_CNT; i++) { + txd = &sc->alc_cdata.alc_txdesc[i]; + if (txd->tx_m != NULL) { + bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, + txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); + bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, + txd->tx_dmamap); + m_freem(txd->tx_m); + txd->tx_m = NULL; + } + } +} + +static void +alc_stop_mac(struct alc_softc *sc) +{ + uint32_t reg; + int i; + + ALC_LOCK_ASSERT(sc); + + /* Disable Rx/Tx MAC. */ + reg = CSR_READ_4(sc, ALC_MAC_CFG); + if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) { + reg &= ~MAC_CFG_TX_ENB | MAC_CFG_RX_ENB; + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); + } + for (i = ALC_TIMEOUT; i > 0; i--) { + reg = CSR_READ_4(sc, ALC_IDLE_STATUS); + if (reg == 0) + break; + DELAY(10); + } + if (i == 0) + device_printf(sc->alc_dev, + "could not disable Rx/Tx MAC(0x%08x)!\n", reg); +} + +static void +alc_start_queue(struct alc_softc *sc) +{ + uint32_t qcfg[] = { + 0, + RXQ_CFG_QUEUE0_ENB, + RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB, + RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB, + RXQ_CFG_ENB + }; + uint32_t cfg; + + ALC_LOCK_ASSERT(sc); + + /* Enable RxQ. */ + cfg = CSR_READ_4(sc, ALC_RXQ_CFG); + cfg &= ~RXQ_CFG_ENB; + cfg |= qcfg[1]; + CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg); + /* Enable TxQ. */ + cfg = CSR_READ_4(sc, ALC_TXQ_CFG); + cfg |= TXQ_CFG_ENB; + CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg); +} + +static void +alc_stop_queue(struct alc_softc *sc) +{ + uint32_t reg; + int i; + + ALC_LOCK_ASSERT(sc); + + /* Disable RxQ. */ + reg = CSR_READ_4(sc, ALC_RXQ_CFG); + if ((reg & RXQ_CFG_ENB) != 0) { + reg &= ~RXQ_CFG_ENB; + CSR_WRITE_4(sc, ALC_RXQ_CFG, reg); + } + /* Disable TxQ. */ + reg = CSR_READ_4(sc, ALC_TXQ_CFG); + if ((reg & TXQ_CFG_ENB) == 0) { + reg &= ~TXQ_CFG_ENB; + CSR_WRITE_4(sc, ALC_TXQ_CFG, reg); + } + for (i = ALC_TIMEOUT; i > 0; i--) { + reg = CSR_READ_4(sc, ALC_IDLE_STATUS); + if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0) + break; + DELAY(10); + } + if (i == 0) + device_printf(sc->alc_dev, + "could not disable RxQ/TxQ (0x%08x)!\n", reg); +} + +static void +alc_init_tx_ring(struct alc_softc *sc) +{ + struct alc_ring_data *rd; + struct alc_txdesc *txd; + int i; + + ALC_LOCK_ASSERT(sc); + + sc->alc_cdata.alc_tx_prod = 0; + sc->alc_cdata.alc_tx_cons = 0; + sc->alc_cdata.alc_tx_cnt = 0; + + rd = &sc->alc_rdata; + bzero(rd->alc_tx_ring, ALC_TX_RING_SZ); + for (i = 0; i < ALC_TX_RING_CNT; i++) { + txd = &sc->alc_cdata.alc_txdesc[i]; + txd->tx_m = NULL; + } + + bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag, + sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE); +} + +static int +alc_init_rx_ring(struct alc_softc *sc) +{ + struct alc_ring_data *rd; + struct alc_rxdesc *rxd; + int i; + + ALC_LOCK_ASSERT(sc); + + sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1; + sc->alc_morework = 0; + rd = &sc->alc_rdata; + bzero(rd->alc_rx_ring, ALC_RX_RING_SZ); + for (i = 0; i < ALC_RX_RING_CNT; i++) { + rxd = &sc->alc_cdata.alc_rxdesc[i]; + rxd->rx_m = NULL; + rxd->rx_desc = &rd->alc_rx_ring[i]; + if (alc_newbuf(sc, rxd) != 0) + return (ENOBUFS); + } + + /* + * Since controller does not update Rx descriptors, driver + * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE + * is enough to ensure coherence. + */ + bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag, + sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE); + /* Let controller know availability of new Rx buffers. */ + CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons); + + return (0); +} + +static void +alc_init_rr_ring(struct alc_softc *sc) +{ + struct alc_ring_data *rd; + + ALC_LOCK_ASSERT(sc); + + sc->alc_cdata.alc_rr_cons = 0; + ALC_RXCHAIN_RESET(sc); + + rd = &sc->alc_rdata; + bzero(rd->alc_rr_ring, ALC_RR_RING_SZ); + bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag, + sc->alc_cdata.alc_rr_ring_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); +} + +static void +alc_init_cmb(struct alc_softc *sc) +{ + struct alc_ring_data *rd; + + ALC_LOCK_ASSERT(sc); + + rd = &sc->alc_rdata; + bzero(rd->alc_cmb, ALC_CMB_SZ); + bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); +} + +static void +alc_init_smb(struct alc_softc *sc) +{ + struct alc_ring_data *rd; + + ALC_LOCK_ASSERT(sc); + + rd = &sc->alc_rdata; + bzero(rd->alc_smb, ALC_SMB_SZ); + bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); +} + +static void +alc_rxvlan(struct alc_softc *sc) +{ + struct ifnet *ifp; + uint32_t reg; + + ALC_LOCK_ASSERT(sc); + + ifp = sc->alc_ifp; + reg = CSR_READ_4(sc, ALC_MAC_CFG); + if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) + reg |= MAC_CFG_VLAN_TAG_STRIP; + else + reg &= ~MAC_CFG_VLAN_TAG_STRIP; + CSR_WRITE_4(sc, ALC_MAC_CFG, reg); +} + +static void +alc_rxfilter(struct alc_softc *sc) +{ + struct ifnet *ifp; + struct ifmultiaddr *ifma; + uint32_t crc; + uint32_t mchash[2]; + uint32_t rxcfg; + + ALC_LOCK_ASSERT(sc); + + ifp = sc->alc_ifp; + + bzero(mchash, sizeof(mchash)); + rxcfg = CSR_READ_4(sc, ALC_MAC_CFG); + rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC); + if ((ifp->if_flags & IFF_BROADCAST) != 0) + rxcfg |= MAC_CFG_BCAST; + if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { + if ((ifp->if_flags & IFF_PROMISC) != 0) + rxcfg |= MAC_CFG_PROMISC; + if ((ifp->if_flags & IFF_ALLMULTI) != 0) + rxcfg |= MAC_CFG_ALLMULTI; + mchash[0] = 0xFFFFFFFF; + mchash[1] = 0xFFFFFFFF; + goto chipit; + } + + IF_ADDR_LOCK(ifp); + TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) { + if (ifma->ifma_addr->sa_family != AF_LINK) + continue; + crc = ether_crc32_le(LLADDR((struct sockaddr_dl *) + ifma->ifma_addr), ETHER_ADDR_LEN); + mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f); + } + IF_ADDR_UNLOCK(ifp); + +chipit: + CSR_WRITE_4(sc, ALC_MAR0, mchash[0]); + CSR_WRITE_4(sc, ALC_MAR1, mchash[1]); + CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg); +} + +static int +sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) +{ + int error, value; + + if (arg1 == NULL) + return (EINVAL); + value = *(int *)arg1; + error = sysctl_handle_int(oidp, &value, 0, req); + if (error || req->newptr == NULL) + return (error); + if (value < low || value > high) + return (EINVAL); + *(int *)arg1 = value; + + return (0); +} + +static int +sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS) +{ + return (sysctl_int_range(oidp, arg1, arg2, req, + ALC_PROC_MIN, ALC_PROC_MAX)); +} + +static int +sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS) +{ + + return (sysctl_int_range(oidp, arg1, arg2, req, + ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX)); +} diff --git a/sys/dev/alc/if_alcreg.h b/sys/dev/alc/if_alcreg.h new file mode 100644 index 0000000..21191ab --- /dev/null +++ b/sys/dev/alc/if_alcreg.h @@ -0,0 +1,947 @@ +/*- + * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMATES (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 DAMATE. + * + * $FreeBSD$ + */ + +#ifndef _IF_ALCREG_H +#define _IF_ALCREG_H + +/* + * Atheros Communucations, Inc. PCI vendor ID + */ +#define VENDORID_ATHEROS 0x1969 + +/* + * Atheros AR8131/AR8132 device ID + */ +#define DEVICEID_ATHEROS_AR8131 0x1063 /* L1C */ +#define DEVICEID_ATHEROS_AR8132 0x1062 /* L2C */ + +/* 0x0000 - 0x02FF : PCIe configuration space */ + +#define ALC_PEX_UNC_ERR_SEV 0x10C +#define PEX_UNC_ERR_SEV_TRN 0x00000001 +#define PEX_UNC_ERR_SEV_DLP 0x00000010 +#define PEX_UNC_ERR_SEV_PSN_TLP 0x00001000 +#define PEX_UNC_ERR_SEV_FCP 0x00002000 +#define PEX_UNC_ERR_SEV_CPL_TO 0x00004000 +#define PEX_UNC_ERR_SEV_CA 0x00008000 +#define PEX_UNC_ERR_SEV_UC 0x00010000 +#define PEX_UNC_ERR_SEV_ROV 0x00020000 +#define PEX_UNC_ERR_SEV_MLFP 0x00040000 +#define PEX_UNC_ERR_SEV_ECRC 0x00080000 +#define PEX_UNC_ERR_SEV_UR 0x00100000 + +#define ALC_TWSI_CFG 0x218 +#define TWSI_CFG_SW_LD_START 0x00000800 +#define TWSI_CFG_HW_LD_START 0x00001000 +#define TWSI_CFG_LD_EXIST 0x00400000 + +#define ALC_PCIE_PHYMISC 0x1000 +#define PCIE_PHYMISC_FORCE_RCV_DET 0x00000004 + +#define ALC_TWSI_DEBUG 0x1108 +#define TWSI_DEBUG_DEV_EXIST 0x20000000 + +#define ALC_EEPROM_CFG 0x12C0 +#define EEPROM_CFG_DATA_HI_MASK 0x0000FFFF +#define EEPROM_CFG_ADDR_MASK 0x03FF0000 +#define EEPROM_CFG_ACK 0x40000000 +#define EEPROM_CFG_RW 0x80000000 +#define EEPROM_CFG_DATA_HI_SHIFT 0 +#define EEPROM_CFG_ADDR_SHIFT 16 + +#define ALC_EEPROM_DATA_LO 0x12C4 + +#define ALC_OPT_CFG 0x12F0 +#define OPT_CFG_CLK_ENB 0x00000002 + +#define ALC_PM_CFG 0x12F8 +#define PM_CFG_SERDES_ENB 0x00000001 +#define PM_CFG_RBER_ENB 0x00000002 +#define PM_CFG_CLK_REQ_ENB 0x00000004 +#define PM_CFG_ASPM_L1_ENB 0x00000008 +#define PM_CFG_SERDES_L1_ENB 0x00000010 +#define PM_CFG_SERDES_PLL_L1_ENB 0x00000020 +#define PM_CFG_SERDES_PD_EX_L1 0x00000040 +#define PM_CFG_SERDES_BUDS_RX_L1_ENB 0x00000080 +#define PM_CFG_L0S_ENTRY_TIMER_MASK 0x00000F00 +#define PM_CFG_ASPM_L0S_ENB 0x00001000 +#define PM_CFG_CLK_SWH_L1 0x00002000 +#define PM_CFG_CLK_PWM_VER1_1 0x00004000 +#define PM_CFG_PCIE_RECV 0x00008000 +#define PM_CFG_L1_ENTRY_TIMER_MASK 0x000F0000 +#define PM_CFG_PM_REQ_TIMER_MASK 0x00F00000 +#define PM_CFG_LCKDET_TIMER_MASK 0x3F000000 +#define PM_CFG_MAC_ASPM_CHK 0x40000000 +#define PM_CFG_HOTRST 0x80000000 +#define PM_CFG_L0S_ENTRY_TIMER_SHIFT 8 +#define PM_CFG_L1_ENTRY_TIMER_SHIFT 16 +#define PM_CFG_PM_REQ_TIMER_SHIFT 20 +#define PM_CFG_LCKDET_TIMER_SHIFT 24 + +#define ALC_MASTER_CFG 0x1400 +#define MASTER_RESET 0x00000001 +#define MASTER_BERT_START 0x00000010 +#define MASTER_TEST_MODE_MASK 0x000000C0 +#define MASTER_MTIMER_ENB 0x00000100 +#define MASTER_MANUAL_INTR_ENB 0x00000200 +#define MASTER_IM_TX_TIMER_ENB 0x00000400 +#define MASTER_IM_RX_TIMER_ENB 0x00000800 +#define MASTER_CLK_SEL_DIS 0x00001000 +#define MASTER_CLK_SWH_MODE 0x00002000 +#define MASTER_INTR_RD_CLR 0x00004000 +#define MASTER_CHIP_REV_MASK 0x00FF0000 +#define MASTER_CHIP_ID_MASK 0x7F000000 +#define MASTER_OTP_SEL 0x80000000 +#define MASTER_TEST_MODE_SHIFT 2 +#define MASTER_CHIP_REV_SHIFT 16 +#define MASTER_CHIP_ID_SHIFT 24 + +/* Number of ticks per usec for AR8131/AR8132. */ +#define ALC_TICK_USECS 2 +#define ALC_USECS(x) ((x) / ALC_TICK_USECS) + +#define ALC_MANUAL_TIMER 0x1404 + +#define ALC_IM_TIMER 0x1408 +#define IM_TIMER_TX_MASK 0x0000FFFF +#define IM_TIMER_RX_MASK 0xFFFF0000 +#define IM_TIMER_TX_SHIFT 0 +#define IM_TIMER_RX_SHIFT 16 +#define ALC_IM_TIMER_MIN 0 +#define ALC_IM_TIMER_MAX 130000 /* 130ms */ +/* + * 100us will ensure alc(4) wouldn't generate more than 10000 Rx + * interrupts in a second. + */ +#define ALC_IM_RX_TIMER_DEFAULT 100 /* 100us */ +/* + * alc(4) does not rely on Tx completion interrupts, so set it + * somewhat large value to reduce Tx completion interrupts. + */ +#define ALC_IM_TX_TIMER_DEFAULT 50000 /* 50ms */ + +#define ALC_GPHY_CFG 0x140C /* 16bits */ +#define GPHY_CFG_EXT_RESET 0x0001 +#define GPHY_CFG_RTL_MODE 0x0002 +#define GPHY_CFG_LED_MODE 0x0004 +#define GPHY_CFG_ANEG_NOW 0x0008 +#define GPHY_CFG_RECV_ANEG 0x0010 +#define GPHY_CFG_GATE_25M_ENB 0x0020 +#define GPHY_CFG_LPW_EXIT 0x0040 +#define GPHY_CFG_PHY_IDDQ 0x0080 +#define GPHY_CFG_PHY_IDDQ_DIS 0x0100 +#define GPHY_CFG_PCLK_SEL_DIS 0x0200 +#define GPHY_CFG_HIB_EN 0x0400 +#define GPHY_CFG_HIB_PULSE 0x0800 +#define GPHY_CFG_SEL_ANA_RESET 0x1000 +#define GPHY_CFG_PHY_PLL_ON 0x2000 +#define GPHY_CFG_PWDOWN_HW 0x4000 +#define GPHY_CFG_PHY_PLL_BYPASS 0x8000 + +#define ALC_IDLE_STATUS 0x1410 +#define IDLE_STATUS_RXMAC 0x00000001 +#define IDLE_STATUS_TXMAC 0x00000002 +#define IDLE_STATUS_RXQ 0x00000004 +#define IDLE_STATUS_TXQ 0x00000008 +#define IDLE_STATUS_DMARD 0x00000010 +#define IDLE_STATUS_DMAWR 0x00000020 +#define IDLE_STATUS_SMB 0x00000040 +#define IDLE_STATUS_CMB 0x00000080 + +#define ALC_MDIO 0x1414 +#define MDIO_DATA_MASK 0x0000FFFF +#define MDIO_REG_ADDR_MASK 0x001F0000 +#define MDIO_OP_READ 0x00200000 +#define MDIO_OP_WRITE 0x00000000 +#define MDIO_SUP_PREAMBLE 0x00400000 +#define MDIO_OP_EXECUTE 0x00800000 +#define MDIO_CLK_25_4 0x00000000 +#define MDIO_CLK_25_6 0x02000000 +#define MDIO_CLK_25_8 0x03000000 +#define MDIO_CLK_25_10 0x04000000 +#define MDIO_CLK_25_14 0x05000000 +#define MDIO_CLK_25_20 0x06000000 +#define MDIO_CLK_25_28 0x07000000 +#define MDIO_OP_BUSY 0x08000000 +#define MDIO_AP_ENB 0x10000000 +#define MDIO_DATA_SHIFT 0 +#define MDIO_REG_ADDR_SHIFT 16 + +#define MDIO_REG_ADDR(x) \ + (((x) << MDIO_REG_ADDR_SHIFT) & MDIO_REG_ADDR_MASK) +/* Default PHY address. */ +#define ALC_PHY_ADDR 0 + +#define ALC_PHY_STATUS 0x1418 +#define PHY_STATUS_RECV_ENB 0x00000001 +#define PHY_STATUS_GENERAL_MASK 0x0000FFFF +#define PHY_STATUS_OE_PWSP_MASK 0x07FF0000 +#define PHY_STATUS_LPW_STATE 0x80000000 +#define PHY_STATIS_OE_PWSP_SHIFT 16 + +/* Packet memory BIST. */ +#define ALC_BIST0 0x141C +#define BIST0_ENB 0x00000001 +#define BIST0_SRAM_FAIL 0x00000002 +#define BIST0_FUSE_FLAG 0x00000004 + +/* PCIe retry buffer BIST. */ +#define ALC_BIST1 0x1420 +#define BIST1_ENB 0x00000001 +#define BIST1_SRAM_FAIL 0x00000002 +#define BIST1_FUSE_FLAG 0x00000004 + +#define ALC_SERDES_LOCK 0x1424 +#define SERDES_LOCK_DET 0x00000001 +#define SERDES_LOCK_DET_ENB 0x00000002 + +#define ALC_MAC_CFG 0x1480 +#define MAC_CFG_TX_ENB 0x00000001 +#define MAC_CFG_RX_ENB 0x00000002 +#define MAC_CFG_TX_FC 0x00000004 +#define MAC_CFG_RX_FC 0x00000008 +#define MAC_CFG_LOOP 0x00000010 +#define MAC_CFG_FULL_DUPLEX 0x00000020 +#define MAC_CFG_TX_CRC_ENB 0x00000040 +#define MAC_CFG_TX_AUTO_PAD 0x00000080 +#define MAC_CFG_TX_LENCHK 0x00000100 +#define MAC_CFG_RX_JUMBO_ENB 0x00000200 +#define MAC_CFG_PREAMBLE_MASK 0x00003C00 +#define MAC_CFG_VLAN_TAG_STRIP 0x00004000 +#define MAC_CFG_PROMISC 0x00008000 +#define MAC_CFG_TX_PAUSE 0x00010000 +#define MAC_CFG_SCNT 0x00020000 +#define MAC_CFG_SYNC_RST_TX 0x00040000 +#define MAC_CFG_SIM_RST_TX 0x00080000 +#define MAC_CFG_SPEED_MASK 0x00300000 +#define MAC_CFG_SPEED_10_100 0x00100000 +#define MAC_CFG_SPEED_1000 0x00200000 +#define MAC_CFG_DBG_TX_BACKOFF 0x00400000 +#define MAC_CFG_TX_JUMBO_ENB 0x00800000 +#define MAC_CFG_RXCSUM_ENB 0x01000000 +#define MAC_CFG_ALLMULTI 0x02000000 +#define MAC_CFG_BCAST 0x04000000 +#define MAC_CFG_DBG 0x08000000 +#define MAC_CFG_SINGLE_PAUSE_ENB 0x10000000 +#define MAC_CFG_PREAMBLE_SHIFT 10 +#define MAC_CFG_PREAMBLE_DEFAULT 7 + +#define ALC_IPG_IFG_CFG 0x1484 +#define IPG_IFG_IPGT_MASK 0x0000007F +#define IPG_IFG_MIFG_MASK 0x0000FF00 +#define IPG_IFG_IPG1_MASK 0x007F0000 +#define IPG_IFG_IPG2_MASK 0x7F000000 +#define IPG_IFG_IPGT_SHIFT 0 +#define IPG_IFG_IPGT_DEFAULT 0x60 +#define IPG_IFG_MIFG_SHIFT 8 +#define IPG_IFG_MIFG_DEFAULT 0x50 +#define IPG_IFG_IPG1_SHIFT 16 +#define IPG_IFG_IPG1_DEFAULT 0x40 +#define IPG_IFG_IPG2_SHIFT 24 +#define IPG_IFG_IPG2_DEFAULT 0x60 + +/* Station address. */ +#define ALC_PAR0 0x1488 +#define ALC_PAR1 0x148C + +/* 64bit multicast hash register. */ +#define ALC_MAR0 0x1490 +#define ALC_MAR1 0x1494 + +/* half-duplex parameter configuration. */ +#define ALC_HDPX_CFG 0x1498 +#define HDPX_CFG_LCOL_MASK 0x000003FF +#define HDPX_CFG_RETRY_MASK 0x0000F000 +#define HDPX_CFG_EXC_DEF_EN 0x00010000 +#define HDPX_CFG_NO_BACK_C 0x00020000 +#define HDPX_CFG_NO_BACK_P 0x00040000 +#define HDPX_CFG_ABEBE 0x00080000 +#define HDPX_CFG_ABEBT_MASK 0x00F00000 +#define HDPX_CFG_JAMIPG_MASK 0x0F000000 +#define HDPX_CFG_LCOL_SHIFT 0 +#define HDPX_CFG_LCOL_DEFAULT 0x37 +#define HDPX_CFG_RETRY_SHIFT 12 +#define HDPX_CFG_RETRY_DEFAULT 0x0F +#define HDPX_CFG_ABEBT_SHIFT 20 +#define HDPX_CFG_ABEBT_DEFAULT 0x0A +#define HDPX_CFG_JAMIPG_SHIFT 24 +#define HDPX_CFG_JAMIPG_DEFAULT 0x07 + +#define ALC_FRAME_SIZE 0x149C + +#define ALC_WOL_CFG 0x14A0 +#define WOL_CFG_PATTERN 0x00000001 +#define WOL_CFG_PATTERN_ENB 0x00000002 +#define WOL_CFG_MAGIC 0x00000004 +#define WOL_CFG_MAGIC_ENB 0x00000008 +#define WOL_CFG_LINK_CHG 0x00000010 +#define WOL_CFG_LINK_CHG_ENB 0x00000020 +#define WOL_CFG_PATTERN_DET 0x00000100 +#define WOL_CFG_MAGIC_DET 0x00000200 +#define WOL_CFG_LINK_CHG_DET 0x00000400 +#define WOL_CFG_CLK_SWITCH_ENB 0x00008000 +#define WOL_CFG_PATTERN0 0x00010000 +#define WOL_CFG_PATTERN1 0x00020000 +#define WOL_CFG_PATTERN2 0x00040000 +#define WOL_CFG_PATTERN3 0x00080000 +#define WOL_CFG_PATTERN4 0x00100000 +#define WOL_CFG_PATTERN5 0x00200000 +#define WOL_CFG_PATTERN6 0x00400000 + +/* WOL pattern length. */ +#define ALC_PATTERN_CFG0 0x14A4 +#define PATTERN_CFG_0_LEN_MASK 0x0000007F +#define PATTERN_CFG_1_LEN_MASK 0x00007F00 +#define PATTERN_CFG_2_LEN_MASK 0x007F0000 +#define PATTERN_CFG_3_LEN_MASK 0x7F000000 + +#define ALC_PATTERN_CFG1 0x14A8 +#define PATTERN_CFG_4_LEN_MASK 0x0000007F +#define PATTERN_CFG_5_LEN_MASK 0x00007F00 +#define PATTERN_CFG_6_LEN_MASK 0x007F0000 + +/* RSS */ +#define ALC_RSS_KEY0 0x14B0 + +#define ALC_RSS_KEY1 0x14B4 + +#define ALC_RSS_KEY2 0x14B8 + +#define ALC_RSS_KEY3 0x14BC + +#define ALC_RSS_KEY4 0x14C0 + +#define ALC_RSS_KEY5 0x14C4 + +#define ALC_RSS_KEY6 0x14C8 + +#define ALC_RSS_KEY7 0x14CC + +#define ALC_RSS_KEY8 0x14D0 + +#define ALC_RSS_KEY9 0x14D4 + +#define ALC_RSS_IDT_TABLE0 0x14E0 + +#define ALC_RSS_IDT_TABLE1 0x14E4 + +#define ALC_RSS_IDT_TABLE2 0x14E8 + +#define ALC_RSS_IDT_TABLE3 0x14EC + +#define ALC_RSS_IDT_TABLE4 0x14F0 + +#define ALC_RSS_IDT_TABLE5 0x14F4 + +#define ALC_RSS_IDT_TABLE6 0x14F8 + +#define ALC_RSS_IDT_TABLE7 0x14FC + +#define ALC_SRAM_RD0_ADDR 0x1500 + +#define ALC_SRAM_RD1_ADDR 0x1504 + +#define ALC_SRAM_RD2_ADDR 0x1508 + +#define ALC_SRAM_RD3_ADDR 0x150C + +#define RD_HEAD_ADDR_MASK 0x000003FF +#define RD_TAIL_ADDR_MASK 0x03FF0000 +#define RD_HEAD_ADDR_SHIFT 0 +#define RD_TAIL_ADDR_SHIFT 16 + +#define ALC_RD_NIC_LEN0 0x1510 /* 8 bytes unit */ +#define RD_NIC_LEN_MASK 0x000003FF + +#define ALC_RD_NIC_LEN1 0x1514 + +#define ALC_SRAM_TD_ADDR 0x1518 +#define TD_HEAD_ADDR_MASK 0x000003FF +#define TD_TAIL_ADDR_MASK 0x03FF0000 +#define TD_HEAD_ADDR_SHIFT 0 +#define TD_TAIL_ADDR_SHIFT 16 + +#define ALC_SRAM_TD_LEN 0x151C /* 8 bytes unit */ +#define SRAM_TD_LEN_MASK 0x000003FF + +#define ALC_SRAM_RX_FIFO_ADDR 0x1520 + +#define ALC_SRAM_RX_FIFO_LEN 0x1524 + +#define ALC_SRAM_TX_FIFO_ADDR 0x1528 + +#define ALC_SRAM_TX_FIFO_LEN 0x152C + +#define ALC_SRAM_TCPH_ADDR 0x1530 +#define SRAM_TCPH_ADDR_MASK 0x00000FFF +#define SRAM_PATH_ADDR_MASK 0x0FFF0000 +#define SRAM_TCPH_ADDR_SHIFT 0 +#define SRAM_PKTH_ADDR_SHIFT 16 + +#define ALC_DMA_BLOCK 0x1534 +#define DMA_BLOCK_LOAD 0x00000001 + +#define ALC_RX_BASE_ADDR_HI 0x1540 + +#define ALC_TX_BASE_ADDR_HI 0x1544 + +#define ALC_SMB_BASE_ADDR_HI 0x1548 + +#define ALC_SMB_BASE_ADDR_LO 0x154C + +#define ALC_RD0_HEAD_ADDR_LO 0x1550 + +#define ALC_RD1_HEAD_ADDR_LO 0x1554 + +#define ALC_RD2_HEAD_ADDR_LO 0x1558 + +#define ALC_RD3_HEAD_ADDR_LO 0x155C + +#define ALC_RD_RING_CNT 0x1560 +#define RD_RING_CNT_MASK 0x00000FFF +#define RD_RING_CNT_SHIFT 0 + +#define ALC_RX_BUF_SIZE 0x1564 +#define RX_BUF_SIZE_MASK 0x0000FFFF +/* + * If larger buffer size than 1536 is specified the controller + * will be locked up. This is hardware limitation. + */ +#define RX_BUF_SIZE_MAX 1536 + +#define ALC_RRD0_HEAD_ADDR_LO 0x1568 + +#define ALC_RRD1_HEAD_ADDR_LO 0x156C + +#define ALC_RRD2_HEAD_ADDR_LO 0x1570 + +#define ALC_RRD3_HEAD_ADDR_LO 0x1574 + +#define ALC_RRD_RING_CNT 0x1578 +#define RRD_RING_CNT_MASK 0x00000FFF +#define RRD_RING_CNT_SHIFT 0 + +#define ALC_TDH_HEAD_ADDR_LO 0x157C + +#define ALC_TDL_HEAD_ADDR_LO 0x1580 + +#define ALC_TD_RING_CNT 0x1584 +#define TD_RING_CNT_MASK 0x0000FFFF +#define TD_RING_CNT_SHIFT 0 + +#define ALC_CMB_BASE_ADDR_LO 0x1588 + +#define ALC_TXQ_CFG 0x1590 +#define TXQ_CFG_TD_BURST_MASK 0x0000000F +#define TXQ_CFG_IP_OPTION_ENB 0x00000010 +#define TXQ_CFG_ENB 0x00000020 +#define TXQ_CFG_ENHANCED_MODE 0x00000040 +#define TXQ_CFG_8023_ENB 0x00000080 +#define TXQ_CFG_TX_FIFO_BURST_MASK 0xFFFF0000 +#define TXQ_CFG_TD_BURST_SHIFT 0 +#define TXQ_CFG_TD_BURST_DEFAULT 5 +#define TXQ_CFG_TX_FIFO_BURST_SHIFT 16 + +#define ALC_TSO_OFFLOAD_THRESH 0x1594 /* 8 bytes unit */ +#define TSO_OFFLOAD_THRESH_MASK 0x000007FF +#define TSO_OFFLOAD_THRESH_SHIFT 0 +#define TSO_OFFLOAD_THRESH_UNIT 8 +#define TSO_OFFLOAD_THRESH_UNIT_SHIFT 3 + +#define ALC_TXF_WATER_MARK 0x1598 /* 8 bytes unit */ +#define TXF_WATER_MARK_HI_MASK 0x00000FFF +#define TXF_WATER_MARK_LO_MASK 0x0FFF0000 +#define TXF_WATER_MARK_BURST_ENB 0x80000000 +#define TXF_WATER_MARK_LO_SHIFT 0 +#define TXF_WATER_MARK_HI_SHIFT 16 + +#define ALC_THROUGHPUT_MON 0x159C +#define THROUGHPUT_MON_RATE_MASK 0x00000003 +#define THROUGHPUT_MON_ENB 0x00000080 +#define THROUGHPUT_MON_RATE_SHIFT 0 + +#define ALC_RXQ_CFG 0x15A0 +#define RXQ_CFG_ASPM_THROUGHPUT_LIMIT_MASK 0x00000003 +#define RXQ_CFG_ASPM_THROUGHPUT_LIMIT_NONE 0x00000000 +#define RXQ_CFG_ASPM_THROUGHPUT_LIMIT_1M 0x00000001 +#define RXQ_CFG_ASPM_THROUGHPUT_LIMIT_10M 0x00000002 +#define RXQ_CFG_ASPM_THROUGHPUT_LIMIT_100M 0x00000003 +#define RXQ_CFG_QUEUE1_ENB 0x00000010 +#define RXQ_CFG_QUEUE2_ENB 0x00000020 +#define RXQ_CFG_QUEUE3_ENB 0x00000040 +#define RXQ_CFG_IPV6_CSUM_ENB 0x00000080 +#define RXQ_CFG_RSS_HASH_TBL_LEN_MASK 0x0000FF00 +#define RXQ_CFG_RSS_HASH_IPV4 0x00010000 +#define RXQ_CFG_RSS_HASH_IPV4_TCP 0x00020000 +#define RXQ_CFG_RSS_HASH_IPV6 0x00040000 +#define RXQ_CFG_RSS_HASH_IPV6_TCP 0x00080000 +#define RXQ_CFG_RD_BURST_MASK 0x03F00000 +#define RXQ_CFG_RSS_MODE_DIS 0x00000000 +#define RXQ_CFG_RSS_MODE_SQSINT 0x04000000 +#define RXQ_CFG_RSS_MODE_MQUESINT 0x08000000 +#define RXQ_CFG_RSS_MODE_MQUEMINT 0x0C000000 +#define RXQ_CFG_NIP_QUEUE_SEL_TBL 0x10000000 +#define RXQ_CFG_RSS_HASH_ENB 0x20000000 +#define RXQ_CFG_CUT_THROUGH_ENB 0x40000000 +#define RXQ_CFG_QUEUE0_ENB 0x80000000 +#define RXQ_CFG_RSS_HASH_TBL_LEN_SHIFT 8 +#define RXQ_CFG_RD_BURST_DEFAULT 8 +#define RXQ_CFG_RD_BURST_SHIFT 20 +#define RXQ_CFG_ENB \ + (RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | \ + RXQ_CFG_QUEUE2_ENB | RXQ_CFG_QUEUE3_ENB) + +#define ALC_RX_RD_FREE_THRESH 0x15A4 /* 8 bytes unit. */ +#define RX_RD_FREE_THRESH_HI_MASK 0x0000003F +#define RX_RD_FREE_THRESH_LO_MASK 0x00000FC0 +#define RX_RD_FREE_THRESH_HI_SHIFT 0 +#define RX_RD_FREE_THRESH_LO_SHIFT 6 +#define RX_RD_FREE_THRESH_HI_DEFAULT 16 +#define RX_RD_FREE_THRESH_LO_DEFAULT 8 + +#define ALC_RX_FIFO_PAUSE_THRESH 0x15A8 +#define RX_FIFO_PAUSE_THRESH_LO_MASK 0x00000FFF +#define RX_FIFO_PAUSE_THRESH_HI_MASK 0x0FFF0000 +#define RX_FIFO_PAUSE_THRESH_LO_SHIFT 0 +#define RX_FIFO_PAUSE_THRESH_HI_SHIFT 16 + +#define ALC_RD_DMA_CFG 0x15AC +#define RD_DMA_CFG_THRESH_MASK 0x00000FFF /* 8 bytes unit */ +#define RD_DMA_CFG_TIMER_MASK 0xFFFF0000 +#define RD_DMA_CFG_THRESH_SHIFT 0 +#define RD_DMA_CFG_TIMER_SHIFT 16 +#define RD_DMA_CFG_THRESH_DEFAULT 0x100 +#define RD_DMA_CFG_TIMER_DEFAULT 0 +#define RD_DMA_CFG_TICK_USECS 8 +#define ALC_RD_DMA_CFG_USECS(x) ((x) / RD_DMA_CFG_TICK_USECS) + +#define ALC_RSS_HASH_VALUE 0x15B0 + +#define ALC_RSS_HASH_FLAG 0x15B4 + +#define ALC_RSS_CPU 0x15B8 + +#define ALC_DMA_CFG 0x15C0 +#define DMA_CFG_IN_ORDER 0x00000001 +#define DMA_CFG_ENH_ORDER 0x00000002 +#define DMA_CFG_OUT_ORDER 0x00000004 +#define DMA_CFG_RCB_64 0x00000000 +#define DMA_CFG_RCB_128 0x00000008 +#define DMA_CFG_RD_BURST_128 0x00000000 +#define DMA_CFG_RD_BURST_256 0x00000010 +#define DMA_CFG_RD_BURST_512 0x00000020 +#define DMA_CFG_RD_BURST_1024 0x00000030 +#define DMA_CFG_RD_BURST_2048 0x00000040 +#define DMA_CFG_RD_BURST_4096 0x00000050 +#define DMA_CFG_WR_BURST_128 0x00000000 +#define DMA_CFG_WR_BURST_256 0x00000080 +#define DMA_CFG_WR_BURST_512 0x00000100 +#define DMA_CFG_WR_BURST_1024 0x00000180 +#define DMA_CFG_WR_BURST_2048 0x00000200 +#define DMA_CFG_WR_BURST_4096 0x00000280 +#define DMA_CFG_RD_REQ_PRI 0x00000400 +#define DMA_CFG_RD_DELAY_CNT_MASK 0x0000F800 +#define DMA_CFG_WR_DELAY_CNT_MASK 0x000F0000 +#define DMA_CFG_CMB_ENB 0x00100000 +#define DMA_CFG_SMB_ENB 0x00200000 +#define DMA_CFG_CMB_NOW 0x00400000 +#define DMA_CFG_SMB_DIS 0x01000000 +#define DMA_CFG_SMB_NOW 0x80000000 +#define DMA_CFG_RD_BURST_MASK 0x07 +#define DMA_CFG_RD_BURST_SHIFT 4 +#define DMA_CFG_WR_BURST_MASK 0x07 +#define DMA_CFG_WR_BURST_SHIFT 7 +#define DMA_CFG_RD_DELAY_CNT_SHIFT 11 +#define DMA_CFG_WR_DELAY_CNT_SHIFT 16 +#define DMA_CFG_RD_DELAY_CNT_DEFAULT 15 +#define DMA_CFG_WR_DELAY_CNT_DEFAULT 4 + +#define ALC_SMB_STAT_TIMER 0x15C4 +#define SMB_STAT_TIMER_MASK 0x00FFFFFF +#define SMB_STAT_TIMER_SHIFT 0 + +#define ALC_CMB_TD_THRESH 0x15C8 +#define CMB_TD_THRESH_MASK 0x0000FFFF +#define CMB_TD_THRESH_SHIFT 0 + +#define ALC_CMB_TX_TIMER 0x15CC +#define CMB_TX_TIMER_MASK 0x0000FFFF +#define CMB_TX_TIMER_SHIFT 0 + +#define ALC_MBOX_RD0_PROD_IDX 0x15E0 + +#define ALC_MBOX_RD1_PROD_IDX 0x15E4 + +#define ALC_MBOX_RD2_PROD_IDX 0x15E8 + +#define ALC_MBOX_RD3_PROD_IDX 0x15EC + +#define ALC_MBOX_RD_PROD_MASK 0x0000FFFF +#define MBOX_RD_PROD_SHIFT 0 + +#define ALC_MBOX_TD_PROD_IDX 0x15F0 +#define MBOX_TD_PROD_HI_IDX_MASK 0x0000FFFF +#define MBOX_TD_PROD_LO_IDX_MASK 0xFFFF0000 +#define MBOX_TD_PROD_HI_IDX_SHIFT 0 +#define MBOX_TD_PROD_LO_IDX_SHIFT 16 + +#define ALC_MBOX_TD_CONS_IDX 0x15F4 +#define MBOX_TD_CONS_HI_IDX_MASK 0x0000FFFF +#define MBOX_TD_CONS_LO_IDX_MASK 0xFFFF0000 +#define MBOX_TD_CONS_HI_IDX_SHIFT 0 +#define MBOX_TD_CONS_LO_IDX_SHIFT 16 + +#define ALC_MBOX_RD01_CONS_IDX 0x15F8 +#define MBOX_RD0_CONS_IDX_MASK 0x0000FFFF +#define MBOX_RD1_CONS_IDX_MASK 0xFFFF0000 +#define MBOX_RD0_CONS_IDX_SHIFT 0 +#define MBOX_RD1_CONS_IDX_SHIFT 16 + +#define ALC_MBOX_RD23_CONS_IDX 0x15FC +#define MBOX_RD2_CONS_IDX_MASK 0x0000FFFF +#define MBOX_RD3_CONS_IDX_MASK 0xFFFF0000 +#define MBOX_RD2_CONS_IDX_SHIFT 0 +#define MBOX_RD3_CONS_IDX_SHIFT 16 + +#define ALC_INTR_STATUS 0x1600 +#define INTR_SMB 0x00000001 +#define INTR_TIMER 0x00000002 +#define INTR_MANUAL_TIMER 0x00000004 +#define INTR_RX_FIFO_OFLOW 0x00000008 +#define INTR_RD0_UNDERRUN 0x00000010 +#define INTR_RD1_UNDERRUN 0x00000020 +#define INTR_RD2_UNDERRUN 0x00000040 +#define INTR_RD3_UNDERRUN 0x00000080 +#define INTR_TX_FIFO_UNDERRUN 0x00000100 +#define INTR_DMA_RD_TO_RST 0x00000200 +#define INTR_DMA_WR_TO_RST 0x00000400 +#define INTR_TX_CREDIT 0x00000800 +#define INTR_GPHY 0x00001000 +#define INTR_GPHY_LOW_PW 0x00002000 +#define INTR_TXQ_TO_RST 0x00004000 +#define INTR_TX_PKT 0x00008000 +#define INTR_RX_PKT0 0x00010000 +#define INTR_RX_PKT1 0x00020000 +#define INTR_RX_PKT2 0x00040000 +#define INTR_RX_PKT3 0x00080000 +#define INTR_MAC_RX 0x00100000 +#define INTR_MAC_TX 0x00200000 +#define INTR_UNDERRUN 0x00400000 +#define INTR_FRAME_ERROR 0x00800000 +#define INTR_FRAME_OK 0x01000000 +#define INTR_CSUM_ERROR 0x02000000 +#define INTR_PHY_LINK_DOWN 0x04000000 +#define INTR_DIS_INT 0x80000000 + +/* Interrupt Mask Register */ +#define ALC_INTR_MASK 0x1604 + +#ifdef notyet +#define INTR_RX_PKT \ + (INTR_RX_PKT0 | INTR_RX_PKT1 | INTR_RX_PKT2 | \ + INTR_RX_PKT3) +#define INTR_RD_UNDERRUN \ + (INTR_RD0_UNDERRUN | INTR_RD1_UNDERRUN | \ + INTR_RD2_UNDERRUN | INTR_RD3_UNDERRUN) +#else +#define INTR_RX_PKT INTR_RX_PKT0 +#define INTR_RD_UNDERRUN INTR_RD0_UNDERRUN +#endif + +#define ALC_INTRS \ + (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST | \ + INTR_TXQ_TO_RST | INTR_RX_PKT | INTR_TX_PKT | \ + INTR_RX_FIFO_OFLOW | INTR_RD_UNDERRUN | \ + INTR_TX_FIFO_UNDERRUN) + +#define ALC_INTR_RETRIG_TIMER 0x1608 +#define INTR_RETRIG_TIMER_MASK 0x0000FFFF +#define INTR_RETRIG_TIMER_SHIFT 0 + +#define ALC_HDS_CFG 0x160C +#define HDS_CFG_ENB 0x00000001 +#define HDS_CFG_BACKFILLSIZE_MASK 0x000FFF00 +#define HDS_CFG_MAX_HDRSIZE_MASK 0xFFF00000 +#define HDS_CFG_BACKFILLSIZE_SHIFT 8 +#define HDS_CFG_MAX_HDRSIZE_SHIFT 20 + +/* AR8131/AR8132 registers for MAC statistics */ +#define ALC_RX_MIB_BASE 0x1700 + +#define ALC_TX_MIB_BASE 0x1760 + +#define ALC_DEBUG_DATA0 0x1900 + +#define ALC_DEBUG_DATA1 0x1904 + +#define ALC_MII_DBG_ADDR 0x1D +#define ALC_MII_DBG_DATA 0x1E + +#define MII_ANA_CFG0 0x00 +#define ANA_RESTART_CAL 0x0001 +#define ANA_MANUL_SWICH_ON_MASK 0x001E +#define ANA_MAN_ENABLE 0x0020 +#define ANA_SEL_HSP 0x0040 +#define ANA_EN_HB 0x0080 +#define ANA_EN_HBIAS 0x0100 +#define ANA_OEN_125M 0x0200 +#define ANA_EN_LCKDT 0x0400 +#define ANA_LCKDT_PHY 0x0800 +#define ANA_AFE_MODE 0x1000 +#define ANA_VCO_SLOW 0x2000 +#define ANA_VCO_FAST 0x4000 +#define ANA_SEL_CLK125M_DSP 0x8000 +#define ANA_MANUL_SWICH_ON_SHIFT 1 + +#define MII_ANA_CFG4 0x04 +#define ANA_IECHO_ADJ_MASK 0x0F +#define ANA_IECHO_ADJ_3_MASK 0x000F +#define ANA_IECHO_ADJ_2_MASK 0x00F0 +#define ANA_IECHO_ADJ_1_MASK 0x0F00 +#define ANA_IECHO_ADJ_0_MASK 0xF000 +#define ANA_IECHO_ADJ_3_SHIFT 0 +#define ANA_IECHO_ADJ_2_SHIFT 4 +#define ANA_IECHO_ADJ_1_SHIFT 8 +#define ANA_IECHO_ADJ_0_SHIFT 12 + +#define MII_ANA_CFG5 0x05 +#define ANA_SERDES_CDR_BW_MASK 0x0003 +#define ANA_MS_PAD_DBG 0x0004 +#define ANA_SPEEDUP_DBG 0x0008 +#define ANA_SERDES_TH_LOS_MASK 0x0030 +#define ANA_SERDES_EN_DEEM 0x0040 +#define ANA_SERDES_TXELECIDLE 0x0080 +#define ANA_SERDES_BEACON 0x0100 +#define ANA_SERDES_HALFTXDR 0x0200 +#define ANA_SERDES_SEL_HSP 0x0400 +#define ANA_SERDES_EN_PLL 0x0800 +#define ANA_SERDES_EN 0x1000 +#define ANA_SERDES_EN_LCKDT 0x2000 +#define ANA_SERDES_CDR_BW_SHIFT 0 +#define ANA_SERDES_TH_LOS_SHIFT 4 + +#define MII_ANA_CFG11 0x0B +#define ANA_PS_HIB_EN 0x8000 + +#define MII_ANA_CFG18 0x12 +#define ANA_TEST_MODE_10BT_01MASK 0x0003 +#define ANA_LOOP_SEL_10BT 0x0004 +#define ANA_RGMII_MODE_SW 0x0008 +#define ANA_EN_LONGECABLE 0x0010 +#define ANA_TEST_MODE_10BT_2 0x0020 +#define ANA_EN_10BT_IDLE 0x0400 +#define ANA_EN_MASK_TB 0x0800 +#define ANA_TRIGGER_SEL_TIMER_MASK 0x3000 +#define ANA_INTERVAL_SEL_TIMER_MASK 0xC000 +#define ANA_TEST_MODE_10BT_01SHIFT 0 +#define ANA_TRIGGER_SEL_TIMER_SHIFT 12 +#define ANA_INTERVAL_SEL_TIMER_SHIFT 14 + +#define MII_ANA_CFG41 0x29 +#define ANA_TOP_PS_EN 0x8000 + +#define MII_ANA_CFG54 0x36 +#define ANA_LONG_CABLE_TH_100_MASK 0x003F +#define ANA_DESERVED 0x0040 +#define ANA_EN_LIT_CH 0x0080 +#define ANA_SHORT_CABLE_TH_100_MASK 0x3F00 +#define ANA_BP_BAD_LINK_ACCUM 0x4000 +#define ANA_BP_SMALL_BW 0x8000 +#define ANA_LONG_CABLE_TH_100_SHIFT 0 +#define ANA_SHORT_CABLE_TH_100_SHIFT 8 + +/* Statistics counters collected by the MAC. */ +struct smb { + /* Rx stats. */ + uint32_t rx_frames; + uint32_t rx_bcast_frames; + uint32_t rx_mcast_frames; + uint32_t rx_pause_frames; + uint32_t rx_control_frames; + uint32_t rx_crcerrs; + uint32_t rx_lenerrs; + uint32_t rx_bytes; + uint32_t rx_runts; + uint32_t rx_fragments; + uint32_t rx_pkts_64; + uint32_t rx_pkts_65_127; + uint32_t rx_pkts_128_255; + uint32_t rx_pkts_256_511; + uint32_t rx_pkts_512_1023; + uint32_t rx_pkts_1024_1518; + uint32_t rx_pkts_1519_max; + uint32_t rx_pkts_truncated; + uint32_t rx_fifo_oflows; + uint32_t rx_rrs_errs; + uint32_t rx_alignerrs; + uint32_t rx_bcast_bytes; + uint32_t rx_mcast_bytes; + uint32_t rx_pkts_filtered; + /* Tx stats. */ + uint32_t tx_frames; + uint32_t tx_bcast_frames; + uint32_t tx_mcast_frames; + uint32_t tx_pause_frames; + uint32_t tx_excess_defer; + uint32_t tx_control_frames; + uint32_t tx_deferred; + uint32_t tx_bytes; + uint32_t tx_pkts_64; + uint32_t tx_pkts_65_127; + uint32_t tx_pkts_128_255; + uint32_t tx_pkts_256_511; + uint32_t tx_pkts_512_1023; + uint32_t tx_pkts_1024_1518; + uint32_t tx_pkts_1519_max; + uint32_t tx_single_colls; + uint32_t tx_multi_colls; + uint32_t tx_late_colls; + uint32_t tx_excess_colls; + uint32_t tx_abort; + uint32_t tx_underrun; + uint32_t tx_desc_underrun; + uint32_t tx_lenerrs; + uint32_t tx_pkts_truncated; + uint32_t tx_bcast_bytes; + uint32_t tx_mcast_bytes; + uint32_t updated; +}; + +/* CMB(Coalesing message block) */ +struct cmb { + uint32_t cons; +}; + +/* Rx free descriptor */ +struct rx_desc { + uint64_t addr; +}; + +/* Rx return descriptor */ +struct rx_rdesc { + uint32_t rdinfo; +#define RRD_CSUM_MASK 0x0000FFFF +#define RRD_RD_CNT_MASK 0x000F0000 +#define RRD_RD_IDX_MASK 0xFFF00000 +#define RRD_CSUM_SHIFT 0 +#define RRD_RD_CNT_SHIFT 16 +#define RRD_RD_IDX_SHIFT 20 +#define RRD_CSUM(x) \ + (((x) & RRD_CSUM_MASK) >> RRD_CSUM_SHIFT) +#define RRD_RD_CNT(x) \ + (((x) & RRD_RD_CNT_MASK) >> RRD_RD_CNT_SHIFT) +#define RRD_RD_IDX(x) \ + (((x) & RRD_RD_IDX_MASK) >> RRD_RD_IDX_SHIFT) + uint32_t rss; + uint32_t vtag; +#define RRD_VLAN_MASK 0x0000FFFF +#define RRD_HEAD_LEN_MASK 0x00FF0000 +#define RRD_HDS_MASK 0x03000000 +#define RRD_HDS_NONE 0x00000000 +#define RRD_HDS_HEAD 0x01000000 +#define RRD_HDS_DATA 0x02000000 +#define RRD_CPU_MASK 0x0C000000 +#define RRD_HASH_FLAG_MASK 0xF0000000 +#define RRD_VLAN_SHIFT 0 +#define RRD_HEAD_LEN_SHIFT 16 +#define RRD_HDS_SHIFT 24 +#define RRD_CPU_SHIFT 26 +#define RRD_HASH_FLAG_SHIFT 28 +#define RRD_VLAN(x) \ + (((x) & RRD_VLAN_MASK) >> RRD_VLAN_SHIFT) +#define RRD_HEAD_LEN(x) \ + (((x) & RRD_HEAD_LEN_MASK) >> RRD_HEAD_LEN_SHIFT) +#define RRD_CPU(x) \ + (((x) & RRD_CPU_MASK) >> RRD_CPU_SHIFT) + uint32_t status; +#define RRD_LEN_MASK 0x00003FFF +#define RRD_LEN_SHIFT 0 +#define RRD_TCP_UDPCSUM_NOK 0x00004000 +#define RRD_IPCSUM_NOK 0x00008000 +#define RRD_VLAN_TAG 0x00010000 +#define RRD_PROTO_MASK 0x000E0000 +#define RRD_PROTO_IPV4 0x00020000 +#define RRD_PROTO_IPV6 0x000C0000 +#define RRD_ERR_SUM 0x00100000 +#define RRD_ERR_CRC 0x00200000 +#define RRD_ERR_ALIGN 0x00400000 +#define RRD_ERR_TRUNC 0x00800000 +#define RRD_ERR_RUNT 0x01000000 +#define RRD_ERR_ICMP 0x02000000 +#define RRD_BCAST 0x04000000 +#define RRD_MCAST 0x08000000 +#define RRD_SNAP_LLC 0x10000000 +#define RRD_ETHER 0x00000000 +#define RRD_FIFO_FULL 0x20000000 +#define RRD_ERR_LENGTH 0x40000000 +#define RRD_VALID 0x80000000 +#define RRD_BYTES(x) \ + (((x) & RRD_LEN_MASK) >> RRD_LEN_SHIFT) +#define RRD_IPV4(x) \ + (((x) & RRD_PROTO_MASK) == RRD_PROTO_IPV4) +}; + +/* Tx descriptor */ +struct tx_desc { + uint32_t len; +#define TD_BUFLEN_MASK 0x00003FFF +#define TD_VLAN_MASK 0xFFFF0000 +#define TD_BUFLEN_SHIFT 0 +#define TX_BYTES(x) \ + (((x) << TD_BUFLEN_SHIFT) & TD_BUFLEN_MASK) +#define TD_VLAN_SHIFT 16 + uint32_t flags; +#define TD_L4HDR_OFFSET_MASK 0x000000FF /* byte unit */ +#define TD_TCPHDR_OFFSET_MASK 0x000000FF /* byte unit */ +#define TD_PLOAD_OFFSET_MASK 0x000000FF /* 2 bytes unit */ +#define TD_CUSTOM_CSUM 0x00000100 +#define TD_IPCSUM 0x00000200 +#define TD_TCPCSUM 0x00000400 +#define TD_UDPCSUM 0x00000800 +#define TD_TSO 0x00001000 +#define TD_TSO_DESCV1 0x00000000 +#define TD_TSO_DESCV2 0x00002000 +#define TD_CON_VLAN_TAG 0x00004000 +#define TD_INS_VLAN_TAG 0x00008000 +#define TD_IPV4_DESCV2 0x00010000 +#define TD_LLC_SNAP 0x00020000 +#define TD_ETHERNET 0x00000000 +#define TD_CUSTOM_CSUM_OFFSET_MASK 0x03FC0000 /* 2 bytes unit */ +#define TD_CUSTOM_CSUM_EVEN_PAD 0x40000000 +#define TD_MSS_MASK 0x7FFC0000 +#define TD_EOP 0x80000000 +#define TD_L4HDR_OFFSET_SHIFT 0 +#define TD_TCPHDR_OFFSET_SHIFT 0 +#define TD_PLOAD_OFFSET_SHIFT 0 +#define TD_CUSTOM_CSUM_OFFSET_SHIFT 18 +#define TD_MSS_SHIFT 18 + uint64_t addr; +}; + +#endif /* _IF_ALCREG_H */ diff --git a/sys/dev/alc/if_alcvar.h b/sys/dev/alc/if_alcvar.h new file mode 100644 index 0000000..b8f839d --- /dev/null +++ b/sys/dev/alc/if_alcvar.h @@ -0,0 +1,274 @@ +/*- + * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#ifndef _IF_ALCVAR_H +#define _IF_ALCVAR_H + +#define ALC_TX_RING_CNT 256 +#define ALC_TX_RING_ALIGN sizeof(struct tx_desc) +#define ALC_RX_RING_CNT 256 +#define ALC_RX_RING_ALIGN sizeof(struct rx_desc) +#define ALC_RX_BUF_ALIGN 4 +#define ALC_RR_RING_CNT ALC_RX_RING_CNT +#define ALC_RR_RING_ALIGN sizeof(struct rx_rdesc) +#define ALC_CMB_ALIGN 8 +#define ALC_SMB_ALIGN 8 + +#define ALC_TSO_MAXSEGSIZE 4096 +#define ALC_TSO_MAXSIZE (65535 + sizeof(struct ether_vlan_header)) +#define ALC_MAXTXSEGS 32 + +#define ALC_ADDR_LO(x) ((uint64_t) (x) & 0xFFFFFFFF) +#define ALC_ADDR_HI(x) ((uint64_t) (x) >> 32) + +#define ALC_DESC_INC(x, y) ((x) = ((x) + 1) % (y)) + +/* Water mark to kick reclaiming Tx buffers. */ +#define ALC_TX_DESC_HIWAT ((ALC_TX_RING_CNT * 6) / 10) + +#define ALC_MSI_MESSAGES 1 +#define ALC_MSIX_MESSAGES 1 + +#define ALC_TX_RING_SZ \ + (sizeof(struct tx_desc) * ALC_TX_RING_CNT) +#define ALC_RX_RING_SZ \ + (sizeof(struct rx_desc) * ALC_RX_RING_CNT) +#define ALC_RR_RING_SZ \ + (sizeof(struct rx_rdesc) * ALC_RR_RING_CNT) +#define ALC_CMB_SZ (sizeof(struct cmb)) +#define ALC_SMB_SZ (sizeof(struct smb)) + +#define ALC_PROC_MIN 16 +#define ALC_PROC_MAX (ALC_RX_RING_CNT - 1) +#define ALC_PROC_DEFAULT (ALC_RX_RING_CNT / 4) + +#define ALC_JUMBO_FRAMELEN (9 * 1024) +#define ALC_JUMBO_MTU \ + (ALC_JUMBO_FRAMELEN - sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) +#define ALC_MAX_FRAMELEN (ETHER_MAX_LEN + ETHER_VLAN_ENCAP_LEN) + +/* + * The number of bits reserved for MSS in AR8121/AR8132 controllers + * are 13 bits. This limits the maximum interface MTU size in TSO + * case(8191 + sizeof(struct ip) + sizeof(struct tcphdr)) as upper + * stack should not generate TCP segments with MSS greater than the + * limit. Also Atheros says that maximum MTU for TSO is 6KB. + */ +#define ALC_TSO_MTU (6 * 1024) + +struct alc_rxdesc { + struct mbuf *rx_m; + bus_dmamap_t rx_dmamap; + struct rx_desc *rx_desc; +}; + +struct alc_txdesc { + struct mbuf *tx_m; + bus_dmamap_t tx_dmamap; +}; + +struct alc_ring_data { + struct tx_desc *alc_tx_ring; + bus_addr_t alc_tx_ring_paddr; + struct rx_desc *alc_rx_ring; + bus_addr_t alc_rx_ring_paddr; + struct rx_rdesc *alc_rr_ring; + bus_addr_t alc_rr_ring_paddr; + struct cmb *alc_cmb; + bus_addr_t alc_cmb_paddr; + struct smb *alc_smb; + bus_addr_t alc_smb_paddr; +}; + +struct alc_chain_data { + bus_dma_tag_t alc_parent_tag; + bus_dma_tag_t alc_buffer_tag; + bus_dma_tag_t alc_tx_tag; + struct alc_txdesc alc_txdesc[ALC_TX_RING_CNT]; + bus_dma_tag_t alc_rx_tag; + struct alc_rxdesc alc_rxdesc[ALC_RX_RING_CNT]; + bus_dma_tag_t alc_tx_ring_tag; + bus_dmamap_t alc_tx_ring_map; + bus_dma_tag_t alc_rx_ring_tag; + bus_dmamap_t alc_rx_ring_map; + bus_dma_tag_t alc_rr_ring_tag; + bus_dmamap_t alc_rr_ring_map; + bus_dmamap_t alc_rx_sparemap; + bus_dma_tag_t alc_cmb_tag; + bus_dmamap_t alc_cmb_map; + bus_dma_tag_t alc_smb_tag; + bus_dmamap_t alc_smb_map; + + int alc_tx_prod; + int alc_tx_cons; + int alc_tx_cnt; + int alc_rx_cons; + int alc_rr_cons; + int alc_rxlen; + + struct mbuf *alc_rxhead; + struct mbuf *alc_rxtail; + struct mbuf *alc_rxprev_tail; +}; + +struct alc_hw_stats { + /* Rx stats. */ + uint32_t rx_frames; + uint32_t rx_bcast_frames; + uint32_t rx_mcast_frames; + uint32_t rx_pause_frames; + uint32_t rx_control_frames; + uint32_t rx_crcerrs; + uint32_t rx_lenerrs; + uint64_t rx_bytes; + uint32_t rx_runts; + uint32_t rx_fragments; + uint32_t rx_pkts_64; + uint32_t rx_pkts_65_127; + uint32_t rx_pkts_128_255; + uint32_t rx_pkts_256_511; + uint32_t rx_pkts_512_1023; + uint32_t rx_pkts_1024_1518; + uint32_t rx_pkts_1519_max; + uint32_t rx_pkts_truncated; + uint32_t rx_fifo_oflows; + uint32_t rx_rrs_errs; + uint32_t rx_alignerrs; + uint64_t rx_bcast_bytes; + uint64_t rx_mcast_bytes; + uint32_t rx_pkts_filtered; + /* Tx stats. */ + uint32_t tx_frames; + uint32_t tx_bcast_frames; + uint32_t tx_mcast_frames; + uint32_t tx_pause_frames; + uint32_t tx_excess_defer; + uint32_t tx_control_frames; + uint32_t tx_deferred; + uint64_t tx_bytes; + uint32_t tx_pkts_64; + uint32_t tx_pkts_65_127; + uint32_t tx_pkts_128_255; + uint32_t tx_pkts_256_511; + uint32_t tx_pkts_512_1023; + uint32_t tx_pkts_1024_1518; + uint32_t tx_pkts_1519_max; + uint32_t tx_single_colls; + uint32_t tx_multi_colls; + uint32_t tx_late_colls; + uint32_t tx_excess_colls; + uint32_t tx_abort; + uint32_t tx_underrun; + uint32_t tx_desc_underrun; + uint32_t tx_lenerrs; + uint32_t tx_pkts_truncated; + uint64_t tx_bcast_bytes; + uint64_t tx_mcast_bytes; +}; + +/* + * Software state per device. + */ +struct alc_softc { + struct ifnet *alc_ifp; + device_t alc_dev; + device_t alc_miibus; + struct resource *alc_res[1]; + struct resource_spec *alc_res_spec; + struct resource *alc_irq[ALC_MSI_MESSAGES]; + struct resource_spec *alc_irq_spec; + void *alc_intrhand[ALC_MSI_MESSAGES]; + int alc_rev; + int alc_chip_rev; + int alc_phyaddr; + uint8_t alc_eaddr[ETHER_ADDR_LEN]; + uint32_t alc_dma_rd_burst; + uint32_t alc_dma_wr_burst; + uint32_t alc_rcb; + int alc_flags; +#define ALC_FLAG_PCIE 0x0001 +#define ALC_FLAG_PCIX 0x0002 +#define ALC_FLAG_MSI 0x0004 +#define ALC_FLAG_MSIX 0x0008 +#define ALC_FLAG_FASTETHER 0x0020 +#define ALC_FLAG_JUMBO 0x0040 +#define ALC_FLAG_ASPM_MON 0x0080 +#define ALC_FLAG_CMB_BUG 0x0100 +#define ALC_FLAG_SMB_BUG 0x0200 +#define ALC_FLAG_DETACH 0x4000 +#define ALC_FLAG_LINK 0x8000 + + struct callout alc_tick_ch; + struct alc_hw_stats alc_stats; + struct alc_chain_data alc_cdata; + struct alc_ring_data alc_rdata; + int alc_if_flags; + int alc_watchdog_timer; + int alc_process_limit; + volatile int alc_morework; + int alc_int_rx_mod; + int alc_int_tx_mod; + int alc_buf_size; + + struct task alc_int_task; + struct task alc_tx_task; + struct taskqueue *alc_tq; + struct mtx alc_mtx; +}; + +/* Register access macros. */ +#define CSR_WRITE_4(_sc, reg, val) \ + bus_write_4((_sc)->alc_res[0], (reg), (val)) +#define CSR_WRITE_2(_sc, reg, val) \ + bus_write_2((_sc)->alc_res[0], (reg), (val)) +#define CSR_WRITE_1(_sc, reg, val) \ + bus_write_1((_sc)->alc_res[0], (reg), (val)) +#define CSR_READ_2(_sc, reg) \ + bus_read_2((_sc)->alc_res[0], (reg)) +#define CSR_READ_4(_sc, reg) \ + bus_read_4((_sc)->alc_res[0], (reg)) + +#define ALC_RXCHAIN_RESET(_sc) \ +do { \ + (_sc)->alc_cdata.alc_rxhead = NULL; \ + (_sc)->alc_cdata.alc_rxtail = NULL; \ + (_sc)->alc_cdata.alc_rxprev_tail = NULL; \ + (_sc)->alc_cdata.alc_rxlen = 0; \ +} while (0) + +#define ALC_LOCK(_sc) mtx_lock(&(_sc)->alc_mtx) +#define ALC_UNLOCK(_sc) mtx_unlock(&(_sc)->alc_mtx) +#define ALC_LOCK_ASSERT(_sc) mtx_assert(&(_sc)->alc_mtx, MA_OWNED) + +#define ALC_TX_TIMEOUT 5 +#define ALC_RESET_TIMEOUT 100 +#define ALC_TIMEOUT 1000 +#define ALC_PHY_TIMEOUT 1000 + +#endif /* _IF_ALCVAR_H */ diff --git a/sys/i386/conf/GENERIC b/sys/i386/conf/GENERIC index 3fe59a5..27a8a5c 100644 --- a/sys/i386/conf/GENERIC +++ b/sys/i386/conf/GENERIC @@ -224,6 +224,7 @@ device vx # 3Com 3c590, 3c595 (``Vortex'') device miibus # MII bus support device ae # Attansic/Atheros L2 FastEthernet device age # Attansic/Atheros L1 Gigabit Ethernet +device alc # Atheros AR8131/AR8132 Ethernet device ale # Atheros AR8121/AR8113/AR8114 Ethernet device bce # Broadcom BCM5706/BCM5708 Gigabit Ethernet device bfe # Broadcom BCM440x 10/100 Ethernet diff --git a/sys/modules/Makefile b/sys/modules/Makefile index 51ce6fc..f789521 100644 --- a/sys/modules/Makefile +++ b/sys/modules/Makefile @@ -19,6 +19,7 @@ SUBDIR= ${_3dfx} \ aio \ ${_amd} \ ${_amdtemp} \ + alc \ ale \ amr \ ${_an} \ diff --git a/sys/modules/alc/Makefile b/sys/modules/alc/Makefile new file mode 100644 index 0000000..9f6d6fc --- /dev/null +++ b/sys/modules/alc/Makefile @@ -0,0 +1,8 @@ +# $FreeBSD$ + +.PATH: ${.CURDIR}/../../dev/alc + +KMOD= if_alc +SRCS= if_alc.c device_if.h bus_if.h pci_if.h miibus_if.h + +.include <bsd.kmod.mk> |
