/*- * Copyright (c) 1995, David Greenman * Copyright (c) 2001 Jonathan Lemon * 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. * */ #include __FBSDID("$FreeBSD$"); /* * Intel EtherExpress Pro/100B PCI Fast Ethernet driver */ #include __FBSDID("$FreeBSD$"); #include #include #include #include /* #include */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for DELAY */ #include #include #ifdef FXP_IP_CSUM_WAR #include #include #include #include #endif #include #include /* for PCIM_CMD_xxx */ #include #include #include #include #include MODULE_DEPEND(fxp, pci, 1, 1, 1); MODULE_DEPEND(fxp, ether, 1, 1, 1); MODULE_DEPEND(fxp, miibus, 1, 1, 1); #include "miibus_if.h" /* * NOTE! On the Alpha, we have an alignment constraint. The * card DMAs the packet immediately following the RFA. However, * the first thing in the packet is a 14-byte Ethernet header. * This means that the packet is misaligned. To compensate, * we actually offset the RFA 2 bytes into the cluster. This * alignes the packet after the Ethernet header at a 32-bit * boundary. HOWEVER! This means that the RFA is misaligned! */ #define RFA_ALIGNMENT_FUDGE 2 /* * Set initial transmit threshold at 64 (512 bytes). This is * increased by 64 (512 bytes) at a time, to maximum of 192 * (1536 bytes), if an underrun occurs. */ static int tx_threshold = 64; /* * The configuration byte map has several undefined fields which * must be one or must be zero. Set up a template for these bits * only, (assuming a 82557 chip) leaving the actual configuration * to fxp_init. * * See struct fxp_cb_config for the bit definitions. */ static u_char fxp_cb_config_template[] = { 0x0, 0x0, /* cb_status */ 0x0, 0x0, /* cb_command */ 0x0, 0x0, 0x0, 0x0, /* link_addr */ 0x0, /* 0 */ 0x0, /* 1 */ 0x0, /* 2 */ 0x0, /* 3 */ 0x0, /* 4 */ 0x0, /* 5 */ 0x32, /* 6 */ 0x0, /* 7 */ 0x0, /* 8 */ 0x0, /* 9 */ 0x6, /* 10 */ 0x0, /* 11 */ 0x0, /* 12 */ 0x0, /* 13 */ 0xf2, /* 14 */ 0x48, /* 15 */ 0x0, /* 16 */ 0x40, /* 17 */ 0xf0, /* 18 */ 0x0, /* 19 */ 0x3f, /* 20 */ 0x5 /* 21 */ }; struct fxp_ident { u_int16_t devid; int16_t revid; /* -1 matches anything */ char *name; }; /* * Claim various Intel PCI device identifiers for this driver. The * sub-vendor and sub-device field are extensively used to identify * particular variants, but we don't currently differentiate between * them. */ static struct fxp_ident fxp_ident_table[] = { { 0x1029, -1, "Intel 82559 PCI/CardBus Pro/100" }, { 0x1030, -1, "Intel 82559 Pro/100 Ethernet" }, { 0x1031, -1, "Intel 82801CAM (ICH3) Pro/100 VE Ethernet" }, { 0x1032, -1, "Intel 82801CAM (ICH3) Pro/100 VE Ethernet" }, { 0x1033, -1, "Intel 82801CAM (ICH3) Pro/100 VM Ethernet" }, { 0x1034, -1, "Intel 82801CAM (ICH3) Pro/100 VM Ethernet" }, { 0x1035, -1, "Intel 82801CAM (ICH3) Pro/100 Ethernet" }, { 0x1036, -1, "Intel 82801CAM (ICH3) Pro/100 Ethernet" }, { 0x1037, -1, "Intel 82801CAM (ICH3) Pro/100 Ethernet" }, { 0x1038, -1, "Intel 82801CAM (ICH3) Pro/100 VM Ethernet" }, { 0x1039, -1, "Intel 82801DB (ICH4) Pro/100 VE Ethernet" }, { 0x103A, -1, "Intel 82801DB (ICH4) Pro/100 Ethernet" }, { 0x103B, -1, "Intel 82801DB (ICH4) Pro/100 VM Ethernet" }, { 0x103C, -1, "Intel 82801DB (ICH4) Pro/100 Ethernet" }, { 0x103D, -1, "Intel 82801DB (ICH4) Pro/100 VE Ethernet" }, { 0x103E, -1, "Intel 82801DB (ICH4) Pro/100 VM Ethernet" }, { 0x1050, -1, "Intel 82801BA (D865) Pro/100 VE Ethernet" }, { 0x1059, -1, "Intel 82551QM Pro/100 M Mobile Connection" }, { 0x1209, -1, "Intel 82559ER Embedded 10/100 Ethernet" }, { 0x1229, 0x01, "Intel 82557 Pro/100 Ethernet" }, { 0x1229, 0x02, "Intel 82557 Pro/100 Ethernet" }, { 0x1229, 0x03, "Intel 82557 Pro/100 Ethernet" }, { 0x1229, 0x04, "Intel 82558 Pro/100 Ethernet" }, { 0x1229, 0x05, "Intel 82558 Pro/100 Ethernet" }, { 0x1229, 0x06, "Intel 82559 Pro/100 Ethernet" }, { 0x1229, 0x07, "Intel 82559 Pro/100 Ethernet" }, { 0x1229, 0x08, "Intel 82559 Pro/100 Ethernet" }, { 0x1229, 0x09, "Intel 82559ER Pro/100 Ethernet" }, { 0x1229, 0x0c, "Intel 82550 Pro/100 Ethernet" }, { 0x1229, 0x0d, "Intel 82550 Pro/100 Ethernet" }, { 0x1229, 0x0e, "Intel 82550 Pro/100 Ethernet" }, { 0x1229, 0x0f, "Intel 82551 Pro/100 Ethernet" }, { 0x1229, 0x10, "Intel 82551 Pro/100 Ethernet" }, { 0x1229, -1, "Intel 82557/8/9 Pro/100 Ethernet" }, { 0x2449, -1, "Intel 82801BA/CAM (ICH2/3) Pro/100 Ethernet" }, { 0, -1, NULL }, }; #ifdef FXP_IP_CSUM_WAR #define FXP_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) #else #define FXP_CSUM_FEATURES (CSUM_TCP | CSUM_UDP) #endif static int fxp_probe(device_t dev); static int fxp_attach(device_t dev); static int fxp_detach(device_t dev); static int fxp_shutdown(device_t dev); static int fxp_suspend(device_t dev); static int fxp_resume(device_t dev); static void fxp_intr(void *xsc); static void fxp_intr_body(struct fxp_softc *sc, struct ifnet *ifp, u_int8_t statack, int count); static void fxp_init(void *xsc); static void fxp_init_body(struct fxp_softc *sc); static void fxp_tick(void *xsc); #ifndef BURN_BRIDGES static void fxp_powerstate_d0(device_t dev); #endif static void fxp_start(struct ifnet *ifp); static void fxp_start_body(struct ifnet *ifp); static void fxp_stop(struct fxp_softc *sc); static void fxp_release(struct fxp_softc *sc); static int fxp_ioctl(struct ifnet *ifp, u_long command, caddr_t data); static void fxp_watchdog(struct ifnet *ifp); static int fxp_add_rfabuf(struct fxp_softc *sc, struct fxp_rx *rxp); static int fxp_mc_addrs(struct fxp_softc *sc); static void fxp_mc_setup(struct fxp_softc *sc); static u_int16_t fxp_eeprom_getword(struct fxp_softc *sc, int offset, int autosize); static void fxp_eeprom_putword(struct fxp_softc *sc, int offset, u_int16_t data); static void fxp_autosize_eeprom(struct fxp_softc *sc); static void fxp_read_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words); static void fxp_write_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words); static int fxp_ifmedia_upd(struct ifnet *ifp); static void fxp_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr); static int fxp_serial_ifmedia_upd(struct ifnet *ifp); static void fxp_serial_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr); static volatile int fxp_miibus_readreg(device_t dev, int phy, int reg); static void fxp_miibus_writereg(device_t dev, int phy, int reg, int value); static void fxp_load_ucode(struct fxp_softc *sc); static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high); static int sysctl_hw_fxp_bundle_max(SYSCTL_HANDLER_ARGS); static int sysctl_hw_fxp_int_delay(SYSCTL_HANDLER_ARGS); static void fxp_scb_wait(struct fxp_softc *sc); static void fxp_scb_cmd(struct fxp_softc *sc, int cmd); static void fxp_dma_wait(struct fxp_softc *sc, volatile u_int16_t *status, bus_dma_tag_t dmat, bus_dmamap_t map); static device_method_t fxp_methods[] = { /* Device interface */ DEVMETHOD(device_probe, fxp_probe), DEVMETHOD(device_attach, fxp_attach), DEVMETHOD(device_detach, fxp_detach), DEVMETHOD(device_shutdown, fxp_shutdown), DEVMETHOD(device_suspend, fxp_suspend), DEVMETHOD(device_resume, fxp_resume), /* MII interface */ DEVMETHOD(miibus_readreg, fxp_miibus_readreg), DEVMETHOD(miibus_writereg, fxp_miibus_writereg), { 0, 0 } }; static driver_t fxp_driver = { "fxp", fxp_methods, sizeof(struct fxp_softc), }; static devclass_t fxp_devclass; DRIVER_MODULE(fxp, pci, fxp_driver, fxp_devclass, 0, 0); DRIVER_MODULE(fxp, cardbus, fxp_driver, fxp_devclass, 0, 0); DRIVER_MODULE(miibus, fxp, miibus_driver, miibus_devclass, 0, 0); static int fxp_rnr; SYSCTL_INT(_hw, OID_AUTO, fxp_rnr, CTLFLAG_RW, &fxp_rnr, 0, "fxp rnr events"); static int fxp_noflow; SYSCTL_INT(_hw, OID_AUTO, fxp_noflow, CTLFLAG_RW, &fxp_noflow, 0, "fxp flow control disabled"); TUNABLE_INT("hw.fxp_noflow", &fxp_noflow); /* * Wait for the previous command to be accepted (but not necessarily * completed). */ static void fxp_scb_wait(struct fxp_softc *sc) { int i = 10000; while (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) && --i) DELAY(2); if (i == 0) device_printf(sc->dev, "SCB timeout: 0x%x 0x%x 0x%x 0x%x\n", CSR_READ_1(sc, FXP_CSR_SCB_COMMAND), CSR_READ_1(sc, FXP_CSR_SCB_STATACK), CSR_READ_1(sc, FXP_CSR_SCB_RUSCUS), CSR_READ_2(sc, FXP_CSR_FLOWCONTROL)); } static void fxp_scb_cmd(struct fxp_softc *sc, int cmd) { if (cmd == FXP_SCB_COMMAND_CU_RESUME && sc->cu_resume_bug) { CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, FXP_CB_COMMAND_NOP); fxp_scb_wait(sc); } CSR_WRITE_1(sc, FXP_CSR_SCB_COMMAND, cmd); } static void fxp_dma_wait(struct fxp_softc *sc, volatile u_int16_t *status, bus_dma_tag_t dmat, bus_dmamap_t map) { int i = 10000; bus_dmamap_sync(dmat, map, BUS_DMASYNC_POSTREAD); while (!(le16toh(*status) & FXP_CB_STATUS_C) && --i) { DELAY(2); bus_dmamap_sync(dmat, map, BUS_DMASYNC_POSTREAD); } if (i == 0) device_printf(sc->dev, "DMA timeout\n"); } /* * Return identification string if this device is ours. */ static int fxp_probe(device_t dev) { u_int16_t devid; u_int8_t revid; struct fxp_ident *ident; if (pci_get_vendor(dev) == FXP_VENDORID_INTEL) { devid = pci_get_device(dev); revid = pci_get_revid(dev); for (ident = fxp_ident_table; ident->name != NULL; ident++) { if (ident->devid == devid && (ident->revid == revid || ident->revid == -1)) { device_set_desc(dev, ident->name); return (0); } } } return (ENXIO); } #ifndef BURN_BRIDGES static void fxp_powerstate_d0(device_t dev) { #if __FreeBSD_version >= 430002 u_int32_t iobase, membase, irq; if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { /* Save important PCI config data. */ iobase = pci_read_config(dev, FXP_PCI_IOBA, 4); membase = pci_read_config(dev, FXP_PCI_MMBA, 4); irq = pci_read_config(dev, PCIR_INTLINE, 4); /* Reset the power state. */ device_printf(dev, "chip is in D%d power mode " "-- setting to D0\n", pci_get_powerstate(dev)); pci_set_powerstate(dev, PCI_POWERSTATE_D0); /* Restore PCI config data. */ pci_write_config(dev, FXP_PCI_IOBA, iobase, 4); pci_write_config(dev, FXP_PCI_MMBA, membase, 4); pci_write_config(dev, PCIR_INTLINE, irq, 4); } #endif } #endif static void fxp_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) { u_int32_t *addr; if (error) return; KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); addr = arg; *addr = segs->ds_addr; } static int fxp_attach(device_t dev) { int error = 0; struct fxp_softc *sc = device_get_softc(dev); struct ifnet *ifp; struct fxp_rx *rxp; u_int32_t val; u_int16_t data, myea[ETHER_ADDR_LEN / 2]; int i, rid, m1, m2, prefer_iomap, maxtxseg; int s, ipcbxmit_disable; sc->dev = dev; callout_init(&sc->stat_ch, CALLOUT_MPSAFE); sysctl_ctx_init(&sc->sysctl_ctx); mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF); ifmedia_init(&sc->sc_media, 0, fxp_serial_ifmedia_upd, fxp_serial_ifmedia_sts); s = splimp(); /* * Enable bus mastering. */ pci_enable_busmaster(dev); val = pci_read_config(dev, PCIR_COMMAND, 2); #ifndef BURN_BRIDGES fxp_powerstate_d0(dev); #endif /* * Figure out which we should try first - memory mapping or i/o mapping? * We default to memory mapping. Then we accept an override from the * command line. Then we check to see which one is enabled. */ m1 = PCIM_CMD_MEMEN; m2 = PCIM_CMD_PORTEN; prefer_iomap = 0; if (resource_int_value(device_get_name(dev), device_get_unit(dev), "prefer_iomap", &prefer_iomap) == 0 && prefer_iomap != 0) { m1 = PCIM_CMD_PORTEN; m2 = PCIM_CMD_MEMEN; } sc->rtp = (m1 == PCIM_CMD_MEMEN)? SYS_RES_MEMORY : SYS_RES_IOPORT; sc->rgd = (m1 == PCIM_CMD_MEMEN)? FXP_PCI_MMBA : FXP_PCI_IOBA; sc->mem = bus_alloc_resource(dev, sc->rtp, &sc->rgd, 0, ~0, 1, RF_ACTIVE); if (sc->mem == NULL) { sc->rtp = (m2 == PCIM_CMD_MEMEN)? SYS_RES_MEMORY : SYS_RES_IOPORT; sc->rgd = (m2 == PCIM_CMD_MEMEN)? FXP_PCI_MMBA : FXP_PCI_IOBA; sc->mem = bus_alloc_resource(dev, sc->rtp, &sc->rgd, 0, ~0, 1, RF_ACTIVE); } if (!sc->mem) { error = ENXIO; goto fail; } if (bootverbose) { device_printf(dev, "using %s space register mapping\n", sc->rtp == SYS_RES_MEMORY? "memory" : "I/O"); } sc->sc_st = rman_get_bustag(sc->mem); sc->sc_sh = rman_get_bushandle(sc->mem); /* * Allocate our interrupt. */ rid = 0; sc->irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, RF_SHAREABLE | RF_ACTIVE); if (sc->irq == NULL) { device_printf(dev, "could not map interrupt\n"); error = ENXIO; goto fail; } /* * Reset to a stable state. */ CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET); DELAY(10); /* * Find out how large of an SEEPROM we have. */ fxp_autosize_eeprom(sc); /* * Determine whether we must use the 503 serial interface. */ fxp_read_eeprom(sc, &data, 6, 1); if ((data & FXP_PHY_DEVICE_MASK) != 0 && (data & FXP_PHY_SERIAL_ONLY)) sc->flags |= FXP_FLAG_SERIAL_MEDIA; /* * Create the sysctl tree */ sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_nameunit(dev), CTLFLAG_RD, 0, ""); if (sc->sysctl_tree == NULL) { error = ENXIO; goto fail; } SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "int_delay", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON, &sc->tunable_int_delay, 0, sysctl_hw_fxp_int_delay, "I", "FXP driver receive interrupt microcode bundling delay"); SYSCTL_ADD_PROC(&sc->sysctl_ctx, SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "bundle_max", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON, &sc->tunable_bundle_max, 0, sysctl_hw_fxp_bundle_max, "I", "FXP driver receive interrupt microcode bundle size limit"); /* * Pull in device tunables. */ sc->tunable_int_delay = TUNABLE_INT_DELAY; sc->tunable_bundle_max = TUNABLE_BUNDLE_MAX; (void) resource_int_value(device_get_name(dev), device_get_unit(dev), "int_delay", &sc->tunable_int_delay); (void) resource_int_value(device_get_name(dev), device_get_unit(dev), "bundle_max", &sc->tunable_bundle_max); /* * Find out the chip revision; lump all 82557 revs together. */ fxp_read_eeprom(sc, &data, 5, 1); if ((data >> 8) == 1) sc->revision = FXP_REV_82557; else sc->revision = pci_get_revid(dev); /* * Enable workarounds for certain chip revision deficiencies. * * Systems based on the ICH2/ICH2-M chip from Intel, and possibly * some systems based a normal 82559 design, have a defect where * the chip can cause a PCI protocol violation if it receives * a CU_RESUME command when it is entering the IDLE state. The * workaround is to disable Dynamic Standby Mode, so the chip never * deasserts CLKRUN#, and always remains in an active state. * * See Intel 82801BA/82801BAM Specification Update, Errata #30. */ i = pci_get_device(dev); if (i == 0x2449 || (i > 0x1030 && i < 0x1039) || sc->revision >= FXP_REV_82559_A0) { fxp_read_eeprom(sc, &data, 10, 1); if (data & 0x02) { /* STB enable */ u_int16_t cksum; int i; device_printf(dev, "Disabling dynamic standby mode in EEPROM\n"); data &= ~0x02; fxp_write_eeprom(sc, &data, 10, 1); device_printf(dev, "New EEPROM ID: 0x%x\n", data); cksum = 0; for (i = 0; i < (1 << sc->eeprom_size) - 1; i++) { fxp_read_eeprom(sc, &data, i, 1); cksum += data; } i = (1 << sc->eeprom_size) - 1; cksum = 0xBABA - cksum; fxp_read_eeprom(sc, &data, i, 1); fxp_write_eeprom(sc, &cksum, i, 1); device_printf(dev, "EEPROM checksum @ 0x%x: 0x%x -> 0x%x\n", i, data, cksum); #if 1 /* * If the user elects to continue, try the software * workaround, as it is better than nothing. */ sc->flags |= FXP_FLAG_CU_RESUME_BUG; #endif } } /* * If we are not a 82557 chip, we can enable extended features. */ if (sc->revision != FXP_REV_82557) { /* * If MWI is enabled in the PCI configuration, and there * is a valid cacheline size (8 or 16 dwords), then tell * the board to turn on MWI. */ if (val & PCIM_CMD_MWRICEN && pci_read_config(dev, PCIR_CACHELNSZ, 1) != 0) sc->flags |= FXP_FLAG_MWI_ENABLE; /* turn on the extended TxCB feature */ sc->flags |= FXP_FLAG_EXT_TXCB; /* enable reception of long frames for VLAN */ sc->flags |= FXP_FLAG_LONG_PKT_EN; } /* * Enable use of extended RFDs and TCBs for 82550 * and later chips. Note: we need extended TXCB support * too, but that's already enabled by the code above. * Be careful to do this only on the right devices. * * At least some 82550 cards probed as "chip=0x12298086 rev=0x0d" * truncate packets that end with an mbuf containing 1 to 3 bytes * when used with this feature enabled in the previous version of the * driver. This problem appears to be fixed now that the driver * always sets the hardware parse bit in the IPCB structure, which * the "Intel 8255x 10/100 Mbps Ethernet Controller Family Open * Source Software Developer Manual" says is necessary in the * cases where packet truncation was observed. * * The device hint "hint.fxp.UNIT_NUMBER.ipcbxmit_disable" * allows this feature to be disabled at boot time. * * If fxp is not compiled into the kernel, this feature may also * be disabled at run time: * # kldunload fxp * # kenv hint.fxp.0.ipcbxmit_disable=1 * # kldload fxp */ if (resource_int_value("fxp", device_get_unit(dev), "ipcbxmit_disable", &ipcbxmit_disable) != 0) ipcbxmit_disable = 0; if (ipcbxmit_disable == 0 && (sc->revision == FXP_REV_82550 || sc->revision == FXP_REV_82550_C)) { sc->rfa_size = sizeof (struct fxp_rfa); sc->tx_cmd = FXP_CB_COMMAND_IPCBXMIT; sc->flags |= FXP_FLAG_EXT_RFA; } else { sc->rfa_size = sizeof (struct fxp_rfa) - FXP_RFAX_LEN; sc->tx_cmd = FXP_CB_COMMAND_XMIT; } /* * Allocate DMA tags and DMA safe memory. */ maxtxseg = sc->flags & FXP_FLAG_EXT_RFA ? FXP_NTXSEG - 1 : FXP_NTXSEG; error = bus_dma_tag_create(NULL, 2, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES * maxtxseg, maxtxseg, MCLBYTES, 0, busdma_lock_mutex, &Giant, &sc->fxp_mtag); if (error) { device_printf(dev, "could not allocate dma tag\n"); goto fail; } error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct fxp_stats), 1, sizeof(struct fxp_stats), 0, busdma_lock_mutex, &Giant, &sc->fxp_stag); if (error) { device_printf(dev, "could not allocate dma tag\n"); goto fail; } error = bus_dmamem_alloc(sc->fxp_stag, (void **)&sc->fxp_stats, BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->fxp_smap); if (error) goto fail; error = bus_dmamap_load(sc->fxp_stag, sc->fxp_smap, sc->fxp_stats, sizeof(struct fxp_stats), fxp_dma_map_addr, &sc->stats_addr, 0); if (error) { device_printf(dev, "could not map the stats buffer\n"); goto fail; } error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, FXP_TXCB_SZ, 1, FXP_TXCB_SZ, 0, busdma_lock_mutex, &Giant, &sc->cbl_tag); if (error) { device_printf(dev, "could not allocate dma tag\n"); goto fail; } error = bus_dmamem_alloc(sc->cbl_tag, (void **)&sc->fxp_desc.cbl_list, BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->cbl_map); if (error) goto fail; error = bus_dmamap_load(sc->cbl_tag, sc->cbl_map, sc->fxp_desc.cbl_list, FXP_TXCB_SZ, fxp_dma_map_addr, &sc->fxp_desc.cbl_addr, 0); if (error) { device_printf(dev, "could not map DMA memory\n"); goto fail; } error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct fxp_cb_mcs), 1, sizeof(struct fxp_cb_mcs), 0, busdma_lock_mutex, &Giant, &sc->mcs_tag); if (error) { device_printf(dev, "could not allocate dma tag\n"); goto fail; } error = bus_dmamem_alloc(sc->mcs_tag, (void **)&sc->mcsp, BUS_DMA_NOWAIT, &sc->mcs_map); if (error) goto fail; error = bus_dmamap_load(sc->mcs_tag, sc->mcs_map, sc->mcsp, sizeof(struct fxp_cb_mcs), fxp_dma_map_addr, &sc->mcs_addr, 0); if (error) { device_printf(dev, "can't map the multicast setup command\n"); goto fail; } /* * Pre-allocate the TX DMA maps. */ for (i = 0; i < FXP_NTXCB; i++) { error = bus_dmamap_create(sc->fxp_mtag, 0, &sc->fxp_desc.tx_list[i].tx_map); if (error) { device_printf(dev, "can't create DMA map for TX\n"); goto fail; } } error = bus_dmamap_create(sc->fxp_mtag, 0, &sc->spare_map); if (error) { device_printf(dev, "can't create spare DMA map\n"); goto fail; } /* * Pre-allocate our receive buffers. */ sc->fxp_desc.rx_head = sc->fxp_desc.rx_tail = NULL; for (i = 0; i < FXP_NRFABUFS; i++) { rxp = &sc->fxp_desc.rx_list[i]; error = bus_dmamap_create(sc->fxp_mtag, 0, &rxp->rx_map); if (error) { device_printf(dev, "can't create DMA map for RX\n"); goto fail; } if (fxp_add_rfabuf(sc, rxp) != 0) { error = ENOMEM; goto fail; } } /* * Read MAC address. */ fxp_read_eeprom(sc, myea, 0, 3); sc->arpcom.ac_enaddr[0] = myea[0] & 0xff; sc->arpcom.ac_enaddr[1] = myea[0] >> 8; sc->arpcom.ac_enaddr[2] = myea[1] & 0xff; sc->arpcom.ac_enaddr[3] = myea[1] >> 8; sc->arpcom.ac_enaddr[4] = myea[2] & 0xff; sc->arpcom.ac_enaddr[5] = myea[2] >> 8; device_printf(dev, "Ethernet address %6D%s\n", sc->arpcom.ac_enaddr, ":", sc->flags & FXP_FLAG_SERIAL_MEDIA ? ", 10Mbps" : ""); if (bootverbose) { device_printf(dev, "PCI IDs: %04x %04x %04x %04x %04x\n", pci_get_vendor(dev), pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev), pci_get_revid(dev)); fxp_read_eeprom(sc, &data, 10, 1); device_printf(dev, "Dynamic Standby mode is %s\n", data & 0x02 ? "enabled" : "disabled"); } /* * If this is only a 10Mbps device, then there is no MII, and * the PHY will use a serial interface instead. * * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter * doesn't have a programming interface of any sort. The * media is sensed automatically based on how the link partner * is configured. This is, in essence, manual configuration. */ if (sc->flags & FXP_FLAG_SERIAL_MEDIA) { ifmedia_add(&sc->sc_media, IFM_ETHER|IFM_MANUAL, 0, NULL); ifmedia_set(&sc->sc_media, IFM_ETHER|IFM_MANUAL); } else { if (mii_phy_probe(dev, &sc->miibus, fxp_ifmedia_upd, fxp_ifmedia_sts)) { device_printf(dev, "MII without any PHY!\n"); error = ENXIO; goto fail; } } ifp = &sc->arpcom.ac_if; ifp->if_unit = device_get_unit(dev); ifp->if_name = "fxp"; ifp->if_output = ether_output; ifp->if_baudrate = 100000000; ifp->if_init = fxp_init; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = fxp_ioctl; ifp->if_start = fxp_start; ifp->if_watchdog = fxp_watchdog; /* Enable checksum offload for 82550 or better chips */ if (sc->flags & FXP_FLAG_EXT_RFA) { ifp->if_hwassist = FXP_CSUM_FEATURES; ifp->if_capabilities = IFCAP_HWCSUM; ifp->if_capenable = ifp->if_capabilities; } /* * Attach the interface. */ ether_ifattach(ifp, sc->arpcom.ac_enaddr); /* * Tell the upper layer(s) we support long frames. */ ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); ifp->if_capabilities |= IFCAP_VLAN_MTU; /* * Let the system queue as many packets as we have available * TX descriptors. */ ifp->if_snd.ifq_maxlen = FXP_NTXCB - 1; /* * Hook our interrupt after all initialization is complete. * XXX This driver has been tested with the INTR_MPSAFFE flag set * however, ifp and its functions are not fully locked so MPSAFE * should not be used unless you can handle potential data loss. */ error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET /*|INTR_MPSAFE*/, fxp_intr, sc, &sc->ih); if (error) { device_printf(dev, "could not setup irq\n"); ether_ifdetach(&sc->arpcom.ac_if); goto fail; } fail: splx(s); if (error) fxp_release(sc); return (error); } /* * Release all resources. The softc lock should not be held and the * interrupt should already be torn down. */ static void fxp_release(struct fxp_softc *sc) { struct fxp_rx *rxp; struct fxp_tx *txp; int i; mtx_assert(&sc->sc_mtx, MA_NOTOWNED); if (sc->ih) panic("fxp_release() called with intr handle still active"); if (sc->miibus) device_delete_child(sc->dev, sc->miibus); bus_generic_detach(sc->dev); ifmedia_removeall(&sc->sc_media); if (sc->fxp_desc.cbl_list) { bus_dmamap_unload(sc->cbl_tag, sc->cbl_map); bus_dmamem_free(sc->cbl_tag, sc->fxp_desc.cbl_list, sc->cbl_map); } if (sc->fxp_stats) { bus_dmamap_unload(sc->fxp_stag, sc->fxp_smap); bus_dmamem_free(sc->fxp_stag, sc->fxp_stats, sc->fxp_smap); } if (sc->mcsp) { bus_dmamap_unload(sc->mcs_tag, sc->mcs_map); bus_dmamem_free(sc->mcs_tag, sc->mcsp, sc->mcs_map); } if (sc->irq) bus_release_resource(sc->dev, SYS_RES_IRQ, 0, sc->irq); if (sc->mem) bus_release_resource(sc->dev, sc->rtp, sc->rgd, sc->mem); if (sc->fxp_mtag) { for (i = 0; i < FXP_NRFABUFS; i++) { rxp = &sc->fxp_desc.rx_list[i]; if (rxp->rx_mbuf != NULL) { bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->fxp_mtag, rxp->rx_map); m_freem(rxp->rx_mbuf); } bus_dmamap_destroy(sc->fxp_mtag, rxp->rx_map); } bus_dmamap_destroy(sc->fxp_mtag, sc->spare_map); bus_dma_tag_destroy(sc->fxp_mtag); } if (sc->fxp_stag) { for (i = 0; i < FXP_NTXCB; i++) { txp = &sc->fxp_desc.tx_list[i]; if (txp->tx_mbuf != NULL) { bus_dmamap_sync(sc->fxp_mtag, txp->tx_map, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->fxp_mtag, txp->tx_map); m_freem(txp->tx_mbuf); } bus_dmamap_destroy(sc->fxp_mtag, txp->tx_map); } bus_dma_tag_destroy(sc->fxp_stag); } if (sc->cbl_tag) bus_dma_tag_destroy(sc->cbl_tag); if (sc->mcs_tag) bus_dma_tag_destroy(sc->mcs_tag); sysctl_ctx_free(&sc->sysctl_ctx); mtx_destroy(&sc->sc_mtx); } /* * Detach interface. */ static int fxp_detach(device_t dev) { struct fxp_softc *sc = device_get_softc(dev); int s; FXP_LOCK(sc); s = splimp(); sc->suspended = 1; /* Do same thing as we do for suspend */ /* * Close down routes etc. */ ether_ifdetach(&sc->arpcom.ac_if); /* * Stop DMA and drop transmit queue, but disable interrupts first. */ CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE); fxp_stop(sc); FXP_UNLOCK(sc); /* * Unhook interrupt before dropping lock. This is to prevent * races with fxp_intr(). */ bus_teardown_intr(sc->dev, sc->irq, sc->ih); sc->ih = NULL; splx(s); /* Release our allocated resources. */ fxp_release(sc); return (0); } /* * Device shutdown routine. Called at system shutdown after sync. The * main purpose of this routine is to shut off receiver DMA so that * kernel memory doesn't get clobbered during warmboot. */ static int fxp_shutdown(device_t dev) { /* * Make sure that DMA is disabled prior to reboot. Not doing * do could allow DMA to corrupt kernel memory during the * reboot before the driver initializes. */ fxp_stop((struct fxp_softc *) device_get_softc(dev)); return (0); } /* * Device suspend routine. Stop the interface and save some PCI * settings in case the BIOS doesn't restore them properly on * resume. */ static int fxp_suspend(device_t dev) { struct fxp_softc *sc = device_get_softc(dev); int i, s; FXP_LOCK(sc); s = splimp(); fxp_stop(sc); for (i = 0; i < 5; i++) sc->saved_maps[i] = pci_read_config(dev, PCIR_BAR(i), 4); sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4); sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1); sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1); sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1); sc->suspended = 1; FXP_UNLOCK(sc); splx(s); return (0); } /* * Device resume routine. Restore some PCI settings in case the BIOS * doesn't, re-enable busmastering, and restart the interface if * appropriate. */ static int fxp_resume(device_t dev) { struct fxp_softc *sc = device_get_softc(dev); struct ifnet *ifp = &sc->sc_if; u_int16_t pci_command; int i, s; FXP_LOCK(sc); s = splimp(); #ifndef BURN_BRIDGES fxp_powerstate_d0(dev); #endif /* better way to do this? */ for (i = 0; i < 5; i++) pci_write_config(dev, PCIR_BAR(i), sc->saved_maps[i], 4); pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4); pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1); pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1); pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1); /* reenable busmastering */ pci_command = pci_read_config(dev, PCIR_COMMAND, 2); pci_command |= (PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); pci_write_config(dev, PCIR_COMMAND, pci_command, 2); CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SELECTIVE_RESET); DELAY(10); /* reinitialize interface if necessary */ if (ifp->if_flags & IFF_UP) fxp_init_body(sc); sc->suspended = 0; FXP_UNLOCK(sc); splx(s); return (0); } static void fxp_eeprom_shiftin(struct fxp_softc *sc, int data, int length) { u_int16_t reg; int x; /* * Shift in data. */ for (x = 1 << (length - 1); x; x >>= 1) { if (data & x) reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI; else reg = FXP_EEPROM_EECS; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } } /* * Read from the serial EEPROM. Basically, you manually shift in * the read opcode (one bit at a time) and then shift in the address, * and then you shift out the data (all of this one bit at a time). * The word size is 16 bits, so you have to provide the address for * every 16 bits of data. */ static u_int16_t fxp_eeprom_getword(struct fxp_softc *sc, int offset, int autosize) { u_int16_t reg, data; int x; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); /* * Shift in read opcode. */ fxp_eeprom_shiftin(sc, FXP_EEPROM_OPC_READ, 3); /* * Shift in address. */ data = 0; for (x = 1 << (sc->eeprom_size - 1); x; x >>= 1) { if (offset & x) reg = FXP_EEPROM_EECS | FXP_EEPROM_EEDI; else reg = FXP_EEPROM_EECS; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); reg = CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO; data++; if (autosize && reg == 0) { sc->eeprom_size = data; break; } } /* * Shift out data. */ data = 0; reg = FXP_EEPROM_EECS; for (x = 1 << 15; x; x >>= 1) { CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg | FXP_EEPROM_EESK); DELAY(1); if (CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO) data |= x; CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, reg); DELAY(1); } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); return (data); } static void fxp_eeprom_putword(struct fxp_softc *sc, int offset, u_int16_t data) { int i; /* * Erase/write enable. */ CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); fxp_eeprom_shiftin(sc, 0x4, 3); fxp_eeprom_shiftin(sc, 0x03 << (sc->eeprom_size - 2), sc->eeprom_size); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); /* * Shift in write opcode, address, data. */ CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); fxp_eeprom_shiftin(sc, FXP_EEPROM_OPC_WRITE, 3); fxp_eeprom_shiftin(sc, offset, sc->eeprom_size); fxp_eeprom_shiftin(sc, data, 16); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); /* * Wait for EEPROM to finish up. */ CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); DELAY(1); for (i = 0; i < 1000; i++) { if (CSR_READ_2(sc, FXP_CSR_EEPROMCONTROL) & FXP_EEPROM_EEDO) break; DELAY(50); } CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); /* * Erase/write disable. */ CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, FXP_EEPROM_EECS); fxp_eeprom_shiftin(sc, 0x4, 3); fxp_eeprom_shiftin(sc, 0, sc->eeprom_size); CSR_WRITE_2(sc, FXP_CSR_EEPROMCONTROL, 0); DELAY(1); } /* * From NetBSD: * * Figure out EEPROM size. * * 559's can have either 64-word or 256-word EEPROMs, the 558 * datasheet only talks about 64-word EEPROMs, and the 557 datasheet * talks about the existance of 16 to 256 word EEPROMs. * * The only known sizes are 64 and 256, where the 256 version is used * by CardBus cards to store CIS information. * * The address is shifted in msb-to-lsb, and after the last * address-bit the EEPROM is supposed to output a `dummy zero' bit, * after which follows the actual data. We try to detect this zero, by * probing the data-out bit in the EEPROM control register just after * having shifted in a bit. If the bit is zero, we assume we've * shifted enough address bits. The data-out should be tri-state, * before this, which should translate to a logical one. */ static void fxp_autosize_eeprom(struct fxp_softc *sc) { /* guess maximum size of 256 words */ sc->eeprom_size = 8; /* autosize */ (void) fxp_eeprom_getword(sc, 0, 1); } static void fxp_read_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words) { int i; for (i = 0; i < words; i++) data[i] = fxp_eeprom_getword(sc, offset + i, 0); } static void fxp_write_eeprom(struct fxp_softc *sc, u_short *data, int offset, int words) { int i; for (i = 0; i < words; i++) fxp_eeprom_putword(sc, offset + i, data[i]); } static void fxp_dma_map_txbuf(void *arg, bus_dma_segment_t *segs, int nseg, bus_size_t mapsize, int error) { struct fxp_softc *sc; struct fxp_cb_tx *txp; int i; if (error) return; KASSERT(nseg <= FXP_NTXSEG, ("too many DMA segments")); sc = arg; txp = sc->fxp_desc.tx_last->tx_next->tx_cb; for (i = 0; i < nseg; i++) { KASSERT(segs[i].ds_len <= MCLBYTES, ("segment size too large")); /* * If this is an 82550/82551, then we're using extended * TxCBs _and_ we're using checksum offload. This means * that the TxCB is really an IPCB. One major difference * between the two is that with plain extended TxCBs, * the bottom half of the TxCB contains two entries from * the TBD array, whereas IPCBs contain just one entry: * one entry (8 bytes) has been sacrificed for the TCP/IP * checksum offload control bits. So to make things work * right, we have to start filling in the TBD array * starting from a different place depending on whether * the chip is an 82550/82551 or not. */ if (sc->flags & FXP_FLAG_EXT_RFA) { txp->tbd[i + 1].tb_addr = htole32(segs[i].ds_addr); txp->tbd[i + 1].tb_size = htole32(segs[i].ds_len); } else { txp->tbd[i].tb_addr = htole32(segs[i].ds_addr); txp->tbd[i].tb_size = htole32(segs[i].ds_len); } } txp->tbd_number = nseg; } /* * Grab the softc lock and call the real fxp_start_body() routine */ static void fxp_start(struct ifnet *ifp) { struct fxp_softc *sc = ifp->if_softc; FXP_LOCK(sc); fxp_start_body(ifp); FXP_UNLOCK(sc); } /* * Start packet transmission on the interface. * This routine must be called with the softc lock held, and is an * internal entry point only. */ static void fxp_start_body(struct ifnet *ifp) { struct fxp_softc *sc = ifp->if_softc; struct fxp_tx *txp; struct mbuf *mb_head; int error; mtx_assert(&sc->sc_mtx, MA_OWNED); /* * See if we need to suspend xmit until the multicast filter * has been reprogrammed (which can only be done at the head * of the command chain). */ if (sc->need_mcsetup) { return; } txp = NULL; /* * We're finished if there is nothing more to add to the list or if * we're all filled up with buffers to transmit. * NOTE: One TxCB is reserved to guarantee that fxp_mc_setup() can add * a NOP command when needed. */ while (ifp->if_snd.ifq_head != NULL && sc->tx_queued < FXP_NTXCB - 1) { /* * Grab a packet to transmit. */ IF_DEQUEUE(&ifp->if_snd, mb_head); /* * Get pointer to next available tx desc. */ txp = sc->fxp_desc.tx_last->tx_next; /* * A note in Appendix B of the Intel 8255x 10/100 Mbps * Ethernet Controller Family Open Source Software * Developer Manual says: * Using software parsing is only allowed with legal * TCP/IP or UDP/IP packets. * ... * For all other datagrams, hardware parsing must * be used. * Software parsing appears to truncate ICMP and * fragmented UDP packets that contain one to three * bytes in the second (and final) mbuf of the packet. */ if (sc->flags & FXP_FLAG_EXT_RFA) txp->tx_cb->ipcb_ip_activation_high = FXP_IPCB_HARDWAREPARSING_ENABLE; /* * Deal with TCP/IP checksum offload. Note that * in order for TCP checksum offload to work, * the pseudo header checksum must have already * been computed and stored in the checksum field * in the TCP header. The stack should have * already done this for us. */ if (mb_head->m_pkthdr.csum_flags) { if (mb_head->m_pkthdr.csum_flags & CSUM_DELAY_DATA) { txp->tx_cb->ipcb_ip_schedule = FXP_IPCB_TCPUDP_CHECKSUM_ENABLE; if (mb_head->m_pkthdr.csum_flags & CSUM_TCP) txp->tx_cb->ipcb_ip_schedule |= FXP_IPCB_TCP_PACKET; } #ifdef FXP_IP_CSUM_WAR /* * XXX The 82550 chip appears to have trouble * dealing with IP header checksums in very small * datagrams, namely fragments from 1 to 3 bytes * in size. For example, say you want to transmit * a UDP packet of 1473 bytes. The packet will be * fragmented over two IP datagrams, the latter * containing only one byte of data. The 82550 will * botch the header checksum on the 1-byte fragment. * As long as the datagram contains 4 or more bytes * of data, you're ok. * * The following code attempts to work around this * problem: if the datagram is less than 38 bytes * in size (14 bytes ether header, 20 bytes IP header, * plus 4 bytes of data), we punt and compute the IP * header checksum by hand. This workaround doesn't * work very well, however, since it can be fooled * by things like VLAN tags and IP options that make * the header sizes/offsets vary. */ if (mb_head->m_pkthdr.csum_flags & CSUM_IP) { if (mb_head->m_pkthdr.len < 38) { struct ip *ip; mb_head->m_data += ETHER_HDR_LEN; ip = mtod(mb_head, struct ip *); ip->ip_sum = in_cksum(mb_head, ip->ip_hl << 2); mb_head->m_data -= ETHER_HDR_LEN; } else { txp->tx_cb->ipcb_ip_activation_high = FXP_IPCB_HARDWAREPARSING_ENABLE; txp->tx_cb->ipcb_ip_schedule |= FXP_IPCB_IP_CHECKSUM_ENABLE; } } #endif } /* * Go through each of the mbufs in the chain and initialize * the transmit buffer descriptors with the physical address * and size of the mbuf. */ error = bus_dmamap_load_mbuf(sc->fxp_mtag, txp->tx_map, mb_head, fxp_dma_map_txbuf, sc, 0); if (error && error != EFBIG) { device_printf(sc->dev, "can't map mbuf (error %d)\n", error); m_freem(mb_head); break; } if (error) { struct mbuf *mn; /* * We ran out of segments. We have to recopy this * mbuf chain first. Bail out if we can't get the * new buffers. */ mn = m_defrag(mb_head, M_DONTWAIT); if (mn == NULL) { m_freem(mb_head); break; } else { mb_head = mn; } error = bus_dmamap_load_mbuf(sc->fxp_mtag, txp->tx_map, mb_head, fxp_dma_map_txbuf, sc, 0); if (error) { device_printf(sc->dev, "can't map mbuf (error %d)\n", error); m_freem(mb_head); break; } } bus_dmamap_sync(sc->fxp_mtag, txp->tx_map, BUS_DMASYNC_PREWRITE); txp->tx_mbuf = mb_head; txp->tx_cb->cb_status = 0; txp->tx_cb->byte_count = 0; if (sc->tx_queued != FXP_CXINT_THRESH - 1) { txp->tx_cb->cb_command = htole16(sc->tx_cmd | FXP_CB_COMMAND_SF | FXP_CB_COMMAND_S); } else { txp->tx_cb->cb_command = htole16(sc->tx_cmd | FXP_CB_COMMAND_SF | FXP_CB_COMMAND_S | FXP_CB_COMMAND_I); /* * Set a 5 second timer just in case we don't hear * from the card again. */ ifp->if_timer = 5; } txp->tx_cb->tx_threshold = tx_threshold; /* * Advance the end of list forward. */ #ifdef __alpha__ /* * On platforms which can't access memory in 16-bit * granularities, we must prevent the card from DMA'ing * up the status while we update the command field. * This could cause us to overwrite the completion status. * XXX This is probably bogus and we're _not_ looking * for atomicity here. */ atomic_clear_16(&sc->fxp_desc.tx_last->tx_cb->cb_command, htole16(FXP_CB_COMMAND_S)); #else sc->fxp_desc.tx_last->tx_cb->cb_command &= htole16(~FXP_CB_COMMAND_S); #endif /*__alpha__*/ sc->fxp_desc.tx_last = txp; /* * Advance the beginning of the list forward if there are * no other packets queued (when nothing is queued, tx_first * sits on the last TxCB that was sent out). */ if (sc->tx_queued == 0) sc->fxp_desc.tx_first = txp; sc->tx_queued++; /* * Pass packet to bpf if there is a listener. */ BPF_MTAP(ifp, mb_head); } bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); /* * We're finished. If we added to the list, issue a RESUME to get DMA * going again if suspended. */ if (txp != NULL) { fxp_scb_wait(sc); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_RESUME); } } #ifdef DEVICE_POLLING static poll_handler_t fxp_poll; static void fxp_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) { struct fxp_softc *sc = ifp->if_softc; u_int8_t statack; FXP_LOCK(sc); if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0); FXP_UNLOCK(sc); return; } statack = FXP_SCB_STATACK_CXTNO | FXP_SCB_STATACK_CNA | FXP_SCB_STATACK_FR; if (cmd == POLL_AND_CHECK_STATUS) { u_int8_t tmp; tmp = CSR_READ_1(sc, FXP_CSR_SCB_STATACK); if (tmp == 0xff || tmp == 0) { FXP_UNLOCK(sc); return; /* nothing to do */ } tmp &= ~statack; /* ack what we can */ if (tmp != 0) CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, tmp); statack |= tmp; } fxp_intr_body(sc, ifp, statack, count); FXP_UNLOCK(sc); } #endif /* DEVICE_POLLING */ /* * Process interface interrupts. */ static void fxp_intr(void *xsc) { struct fxp_softc *sc = xsc; struct ifnet *ifp = &sc->sc_if; u_int8_t statack; FXP_LOCK(sc); if (sc->suspended) { FXP_UNLOCK(sc); return; } #ifdef DEVICE_POLLING if (ifp->if_flags & IFF_POLLING) { FXP_UNLOCK(sc); return; } if (ether_poll_register(fxp_poll, ifp)) { /* disable interrupts */ CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE); FXP_UNLOCK(sc); fxp_poll(ifp, 0, 1); return; } #endif while ((statack = CSR_READ_1(sc, FXP_CSR_SCB_STATACK)) != 0) { /* * It should not be possible to have all bits set; the * FXP_SCB_INTR_SWI bit always returns 0 on a read. If * all bits are set, this may indicate that the card has * been physically ejected, so ignore it. */ if (statack == 0xff) { FXP_UNLOCK(sc); return; } /* * First ACK all the interrupts in this pass. */ CSR_WRITE_1(sc, FXP_CSR_SCB_STATACK, statack); fxp_intr_body(sc, ifp, statack, -1); } FXP_UNLOCK(sc); } static void fxp_txeof(struct fxp_softc *sc) { struct fxp_tx *txp; bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREREAD); for (txp = sc->fxp_desc.tx_first; sc->tx_queued && (le16toh(txp->tx_cb->cb_status) & FXP_CB_STATUS_C) != 0; txp = txp->tx_next) { if (txp->tx_mbuf != NULL) { bus_dmamap_sync(sc->fxp_mtag, txp->tx_map, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->fxp_mtag, txp->tx_map); m_freem(txp->tx_mbuf); txp->tx_mbuf = NULL; /* clear this to reset csum offload bits */ txp->tx_cb->tbd[0].tb_addr = 0; } sc->tx_queued--; } sc->fxp_desc.tx_first = txp; bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); } static void fxp_intr_body(struct fxp_softc *sc, struct ifnet *ifp, u_int8_t statack, int count) { struct mbuf *m; struct fxp_rx *rxp; struct fxp_rfa *rfa; int rnr = (statack & FXP_SCB_STATACK_RNR) ? 1 : 0; mtx_assert(&sc->sc_mtx, MA_OWNED); if (rnr) fxp_rnr++; #ifdef DEVICE_POLLING /* Pick up a deferred RNR condition if `count' ran out last time. */ if (sc->flags & FXP_FLAG_DEFERRED_RNR) { sc->flags &= ~FXP_FLAG_DEFERRED_RNR; rnr = 1; } #endif /* * Free any finished transmit mbuf chains. * * Handle the CNA event likt a CXTNO event. It used to * be that this event (control unit not ready) was not * encountered, but it is now with the SMPng modifications. * The exact sequence of events that occur when the interface * is brought up are different now, and if this event * goes unhandled, the configuration/rxfilter setup sequence * can stall for several seconds. The result is that no * packets go out onto the wire for about 5 to 10 seconds * after the interface is ifconfig'ed for the first time. */ if (statack & (FXP_SCB_STATACK_CXTNO | FXP_SCB_STATACK_CNA)) { fxp_txeof(sc); ifp->if_timer = 0; if (sc->tx_queued == 0) { if (sc->need_mcsetup) fxp_mc_setup(sc); } /* * Try to start more packets transmitting. */ if (ifp->if_snd.ifq_head != NULL) fxp_start_body(ifp); } /* * Just return if nothing happened on the receive side. */ if (!rnr && (statack & FXP_SCB_STATACK_FR) == 0) return; /* * Process receiver interrupts. If a no-resource (RNR) * condition exists, get whatever packets we can and * re-start the receiver. * * When using polling, we do not process the list to completion, * so when we get an RNR interrupt we must defer the restart * until we hit the last buffer with the C bit set. * If we run out of cycles and rfa_headm has the C bit set, * record the pending RNR in the FXP_FLAG_DEFERRED_RNR flag so * that the info will be used in the subsequent polling cycle. */ for (;;) { rxp = sc->fxp_desc.rx_head; m = rxp->rx_mbuf; rfa = (struct fxp_rfa *)(m->m_ext.ext_buf + RFA_ALIGNMENT_FUDGE); bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map, BUS_DMASYNC_POSTREAD); #ifdef DEVICE_POLLING /* loop at most count times if count >=0 */ if (count >= 0 && count-- == 0) { if (rnr) { /* Defer RNR processing until the next time. */ sc->flags |= FXP_FLAG_DEFERRED_RNR; rnr = 0; } break; } #endif /* DEVICE_POLLING */ if ((le16toh(rfa->rfa_status) & FXP_RFA_STATUS_C) == 0) break; /* * Advance head forward. */ sc->fxp_desc.rx_head = rxp->rx_next; /* * Add a new buffer to the receive chain. * If this fails, the old buffer is recycled * instead. */ if (fxp_add_rfabuf(sc, rxp) == 0) { int total_len; /* * Fetch packet length (the top 2 bits of * actual_size are flags set by the controller * upon completion), and drop the packet in case * of bogus length or CRC errors. */ total_len = le16toh(rfa->actual_size) & 0x3fff; if (total_len < sizeof(struct ether_header) || total_len > MCLBYTES - RFA_ALIGNMENT_FUDGE - sc->rfa_size || le16toh(rfa->rfa_status) & FXP_RFA_STATUS_CRC) { m_freem(m); continue; } /* Do IP checksum checking. */ if (le16toh(rfa->rfa_status) & FXP_RFA_STATUS_PARSE) { if (rfa->rfax_csum_sts & FXP_RFDX_CS_IP_CSUM_BIT_VALID) m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; if (rfa->rfax_csum_sts & FXP_RFDX_CS_IP_CSUM_VALID) m->m_pkthdr.csum_flags |= CSUM_IP_VALID; if ((rfa->rfax_csum_sts & FXP_RFDX_CS_TCPUDP_CSUM_BIT_VALID) && (rfa->rfax_csum_sts & FXP_RFDX_CS_TCPUDP_CSUM_VALID)) { m->m_pkthdr.csum_flags |= CSUM_DATA_VALID|CSUM_PSEUDO_HDR; m->m_pkthdr.csum_data = 0xffff; } } m->m_pkthdr.len = m->m_len = total_len; m->m_pkthdr.rcvif = ifp; /* * Drop locks before calling if_input() since it * may re-enter fxp_start() in the netisr case. * This would result in a lock reversal. Better * performance might be obtained by chaining all * packets received, dropping the lock, and then * calling if_input() on each one. */ FXP_UNLOCK(sc); (*ifp->if_input)(ifp, m); FXP_LOCK(sc); } } if (rnr) { fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->fxp_desc.rx_head->rx_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_START); } } /* * Update packet in/out/collision statistics. The i82557 doesn't * allow you to access these counters without doing a fairly * expensive DMA to get _all_ of the statistics it maintains, so * we do this operation here only once per second. The statistics * counters in the kernel are updated from the previous dump-stats * DMA and then a new dump-stats DMA is started. The on-chip * counters are zeroed when the DMA completes. If we can't start * the DMA immediately, we don't wait - we just prepare to read * them again next time. */ static void fxp_tick(void *xsc) { struct fxp_softc *sc = xsc; struct ifnet *ifp = &sc->sc_if; struct fxp_stats *sp = sc->fxp_stats; int s; FXP_LOCK(sc); s = splimp(); bus_dmamap_sync(sc->fxp_stag, sc->fxp_smap, BUS_DMASYNC_POSTREAD); ifp->if_opackets += le32toh(sp->tx_good); ifp->if_collisions += le32toh(sp->tx_total_collisions); if (sp->rx_good) { ifp->if_ipackets += le32toh(sp->rx_good); sc->rx_idle_secs = 0; } else { /* * Receiver's been idle for another second. */ sc->rx_idle_secs++; } ifp->if_ierrors += le32toh(sp->rx_crc_errors) + le32toh(sp->rx_alignment_errors) + le32toh(sp->rx_rnr_errors) + le32toh(sp->rx_overrun_errors); /* * If any transmit underruns occured, bump up the transmit * threshold by another 512 bytes (64 * 8). */ if (sp->tx_underruns) { ifp->if_oerrors += le32toh(sp->tx_underruns); if (tx_threshold < 192) tx_threshold += 64; } /* * Release any xmit buffers that have completed DMA. This isn't * strictly necessary to do here, but it's advantagous for mbufs * with external storage to be released in a timely manner rather * than being defered for a potentially long time. This limits * the delay to a maximum of one second. */ fxp_txeof(sc); /* * If we haven't received any packets in FXP_MAC_RX_IDLE seconds, * then assume the receiver has locked up and attempt to clear * the condition by reprogramming the multicast filter. This is * a work-around for a bug in the 82557 where the receiver locks * up if it gets certain types of garbage in the syncronization * bits prior to the packet header. This bug is supposed to only * occur in 10Mbps mode, but has been seen to occur in 100Mbps * mode as well (perhaps due to a 10/100 speed transition). */ if (sc->rx_idle_secs > FXP_MAX_RX_IDLE) { sc->rx_idle_secs = 0; fxp_mc_setup(sc); } /* * If there is no pending command, start another stats * dump. Otherwise punt for now. */ if (CSR_READ_1(sc, FXP_CSR_SCB_COMMAND) == 0) { /* * Start another stats dump. */ bus_dmamap_sync(sc->fxp_stag, sc->fxp_smap, BUS_DMASYNC_PREREAD); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_DUMPRESET); } else { /* * A previous command is still waiting to be accepted. * Just zero our copy of the stats and wait for the * next timer event to update them. */ sp->tx_good = 0; sp->tx_underruns = 0; sp->tx_total_collisions = 0; sp->rx_good = 0; sp->rx_crc_errors = 0; sp->rx_alignment_errors = 0; sp->rx_rnr_errors = 0; sp->rx_overrun_errors = 0; } if (sc->miibus != NULL) mii_tick(device_get_softc(sc->miibus)); /* * Schedule another timeout one second from now. */ callout_reset(&sc->stat_ch, hz, fxp_tick, sc); FXP_UNLOCK(sc); splx(s); } /* * Stop the interface. Cancels the statistics updater and resets * the interface. */ static void fxp_stop(struct fxp_softc *sc) { struct ifnet *ifp = &sc->sc_if; struct fxp_tx *txp; int i; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); ifp->if_timer = 0; #ifdef DEVICE_POLLING ether_poll_deregister(ifp); #endif /* * Cancel stats updater. */ callout_stop(&sc->stat_ch); /* * Issue software reset, which also unloads the microcode. */ sc->flags &= ~FXP_FLAG_UCODE; CSR_WRITE_4(sc, FXP_CSR_PORT, FXP_PORT_SOFTWARE_RESET); DELAY(50); /* * Release any xmit buffers. */ txp = sc->fxp_desc.tx_list; if (txp != NULL) { for (i = 0; i < FXP_NTXCB; i++) { if (txp[i].tx_mbuf != NULL) { bus_dmamap_sync(sc->fxp_mtag, txp[i].tx_map, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->fxp_mtag, txp[i].tx_map); m_freem(txp[i].tx_mbuf); txp[i].tx_mbuf = NULL; /* clear this to reset csum offload bits */ txp[i].tx_cb->tbd[0].tb_addr = 0; } } } bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); sc->tx_queued = 0; } /* * Watchdog/transmission transmit timeout handler. Called when a * transmission is started on the interface, but no interrupt is * received before the timeout. This usually indicates that the * card has wedged for some reason. */ static void fxp_watchdog(struct ifnet *ifp) { struct fxp_softc *sc = ifp->if_softc; FXP_LOCK(sc); device_printf(sc->dev, "device timeout\n"); ifp->if_oerrors++; fxp_init_body(sc); FXP_UNLOCK(sc); } /* * Acquire locks and then call the real initialization function. This * is necessary because ether_ioctl() calls if_init() and this would * result in mutex recursion if the mutex was held. */ static void fxp_init(void *xsc) { struct fxp_softc *sc = xsc; FXP_LOCK(sc); fxp_init_body(sc); FXP_UNLOCK(sc); } /* * Perform device initialization. This routine must be called with the * softc lock held. */ static void fxp_init_body(struct fxp_softc *sc) { struct ifnet *ifp = &sc->sc_if; struct fxp_cb_config *cbp; struct fxp_cb_ias *cb_ias; struct fxp_cb_tx *tcbp; struct fxp_tx *txp; struct fxp_cb_mcs *mcsp; int i, prm, s; mtx_assert(&sc->sc_mtx, MA_OWNED); s = splimp(); /* * Cancel any pending I/O */ fxp_stop(sc); prm = (ifp->if_flags & IFF_PROMISC) ? 1 : 0; /* * Initialize base of CBL and RFA memory. Loading with zero * sets it up for regular linear addressing. */ CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, 0); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_BASE); fxp_scb_wait(sc); fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_BASE); /* * Initialize base of dump-stats buffer. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->fxp_stag, sc->fxp_smap, BUS_DMASYNC_PREREAD); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->stats_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_DUMP_ADR); /* * Attempt to load microcode if requested. */ if (ifp->if_flags & IFF_LINK0 && (sc->flags & FXP_FLAG_UCODE) == 0) fxp_load_ucode(sc); /* * Initialize the multicast address list. */ if (fxp_mc_addrs(sc)) { mcsp = sc->mcsp; mcsp->cb_status = 0; mcsp->cb_command = htole16(FXP_CB_COMMAND_MCAS | FXP_CB_COMMAND_EL); mcsp->link_addr = 0xffffffff; /* * Start the multicast setup command. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->mcs_tag, sc->mcs_map, BUS_DMASYNC_PREWRITE); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->mcs_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ fxp_dma_wait(sc, &mcsp->cb_status, sc->mcs_tag, sc->mcs_map); bus_dmamap_sync(sc->mcs_tag, sc->mcs_map, BUS_DMASYNC_POSTWRITE); } /* * We temporarily use memory that contains the TxCB list to * construct the config CB. The TxCB list memory is rebuilt * later. */ cbp = (struct fxp_cb_config *)sc->fxp_desc.cbl_list; /* * This bcopy is kind of disgusting, but there are a bunch of must be * zero and must be one bits in this structure and this is the easiest * way to initialize them all to proper values. */ bcopy(fxp_cb_config_template, cbp, sizeof(fxp_cb_config_template)); cbp->cb_status = 0; cbp->cb_command = htole16(FXP_CB_COMMAND_CONFIG | FXP_CB_COMMAND_EL); cbp->link_addr = 0xffffffff; /* (no) next command */ cbp->byte_count = sc->flags & FXP_FLAG_EXT_RFA ? 32 : 22; cbp->rx_fifo_limit = 8; /* rx fifo threshold (32 bytes) */ cbp->tx_fifo_limit = 0; /* tx fifo threshold (0 bytes) */ cbp->adaptive_ifs = 0; /* (no) adaptive interframe spacing */ cbp->mwi_enable = sc->flags & FXP_FLAG_MWI_ENABLE ? 1 : 0; cbp->type_enable = 0; /* actually reserved */ cbp->read_align_en = sc->flags & FXP_FLAG_READ_ALIGN ? 1 : 0; cbp->end_wr_on_cl = sc->flags & FXP_FLAG_WRITE_ALIGN ? 1 : 0; cbp->rx_dma_bytecount = 0; /* (no) rx DMA max */ cbp->tx_dma_bytecount = 0; /* (no) tx DMA max */ cbp->dma_mbce = 0; /* (disable) dma max counters */ cbp->late_scb = 0; /* (don't) defer SCB update */ cbp->direct_dma_dis = 1; /* disable direct rcv dma mode */ cbp->tno_int_or_tco_en =0; /* (disable) tx not okay interrupt */ cbp->ci_int = 1; /* interrupt on CU idle */ cbp->ext_txcb_dis = sc->flags & FXP_FLAG_EXT_TXCB ? 0 : 1; cbp->ext_stats_dis = 1; /* disable extended counters */ cbp->keep_overrun_rx = 0; /* don't pass overrun frames to host */ cbp->save_bf = sc->revision == FXP_REV_82557 ? 1 : prm; cbp->disc_short_rx = !prm; /* discard short packets */ cbp->underrun_retry = 1; /* retry mode (once) on DMA underrun */ cbp->two_frames = 0; /* do not limit FIFO to 2 frames */ cbp->dyn_tbd = 0; /* (no) dynamic TBD mode */ cbp->ext_rfa = sc->flags & FXP_FLAG_EXT_RFA ? 1 : 0; cbp->mediatype = sc->flags & FXP_FLAG_SERIAL_MEDIA ? 0 : 1; cbp->csma_dis = 0; /* (don't) disable link */ cbp->tcp_udp_cksum = 0; /* (don't) enable checksum */ cbp->vlan_tco = 0; /* (don't) enable vlan wakeup */ cbp->link_wake_en = 0; /* (don't) assert PME# on link change */ cbp->arp_wake_en = 0; /* (don't) assert PME# on arp */ cbp->mc_wake_en = 0; /* (don't) enable PME# on mcmatch */ cbp->nsai = 1; /* (don't) disable source addr insert */ cbp->preamble_length = 2; /* (7 byte) preamble */ cbp->loopback = 0; /* (don't) loopback */ cbp->linear_priority = 0; /* (normal CSMA/CD operation) */ cbp->linear_pri_mode = 0; /* (wait after xmit only) */ cbp->interfrm_spacing = 6; /* (96 bits of) interframe spacing */ cbp->promiscuous = prm; /* promiscuous mode */ cbp->bcast_disable = 0; /* (don't) disable broadcasts */ cbp->wait_after_win = 0; /* (don't) enable modified backoff alg*/ cbp->ignore_ul = 0; /* consider U/L bit in IA matching */ cbp->crc16_en = 0; /* (don't) enable crc-16 algorithm */ cbp->crscdt = sc->flags & FXP_FLAG_SERIAL_MEDIA ? 1 : 0; cbp->stripping = !prm; /* truncate rx packet to byte count */ cbp->padding = 1; /* (do) pad short tx packets */ cbp->rcv_crc_xfer = 0; /* (don't) xfer CRC to host */ cbp->long_rx_en = sc->flags & FXP_FLAG_LONG_PKT_EN ? 1 : 0; cbp->ia_wake_en = 0; /* (don't) wake up on address match */ cbp->magic_pkt_dis = 0; /* (don't) disable magic packet */ /* must set wake_en in PMCSR also */ cbp->force_fdx = 0; /* (don't) force full duplex */ cbp->fdx_pin_en = 1; /* (enable) FDX# pin */ cbp->multi_ia = 0; /* (don't) accept multiple IAs */ cbp->mc_all = sc->flags & FXP_FLAG_ALL_MCAST ? 1 : 0; cbp->gamla_rx = sc->flags & FXP_FLAG_EXT_RFA ? 1 : 0; if (fxp_noflow || sc->revision == FXP_REV_82557) { /* * The 82557 has no hardware flow control, the values * below are the defaults for the chip. */ cbp->fc_delay_lsb = 0; cbp->fc_delay_msb = 0x40; cbp->pri_fc_thresh = 3; cbp->tx_fc_dis = 0; cbp->rx_fc_restop = 0; cbp->rx_fc_restart = 0; cbp->fc_filter = 0; cbp->pri_fc_loc = 1; } else { cbp->fc_delay_lsb = 0x1f; cbp->fc_delay_msb = 0x01; cbp->pri_fc_thresh = 3; cbp->tx_fc_dis = 0; /* enable transmit FC */ cbp->rx_fc_restop = 1; /* enable FC restop frames */ cbp->rx_fc_restart = 1; /* enable FC restart frames */ cbp->fc_filter = !prm; /* drop FC frames to host */ cbp->pri_fc_loc = 1; /* FC pri location (byte31) */ } /* * Start the config command/DMA. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->fxp_desc.cbl_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ fxp_dma_wait(sc, &cbp->cb_status, sc->cbl_tag, sc->cbl_map); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_POSTWRITE); /* * Now initialize the station address. Temporarily use the TxCB * memory area like we did above for the config CB. */ cb_ias = (struct fxp_cb_ias *)sc->fxp_desc.cbl_list; cb_ias->cb_status = 0; cb_ias->cb_command = htole16(FXP_CB_COMMAND_IAS | FXP_CB_COMMAND_EL); cb_ias->link_addr = 0xffffffff; bcopy(sc->arpcom.ac_enaddr, cb_ias->macaddr, sizeof(sc->arpcom.ac_enaddr)); /* * Start the IAS (Individual Address Setup) command/DMA. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ fxp_dma_wait(sc, &cb_ias->cb_status, sc->cbl_tag, sc->cbl_map); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_POSTWRITE); /* * Initialize transmit control block (TxCB) list. */ txp = sc->fxp_desc.tx_list; tcbp = sc->fxp_desc.cbl_list; bzero(tcbp, FXP_TXCB_SZ); for (i = 0; i < FXP_NTXCB; i++) { txp[i].tx_cb = tcbp + i; txp[i].tx_mbuf = NULL; tcbp[i].cb_status = htole16(FXP_CB_STATUS_C | FXP_CB_STATUS_OK); tcbp[i].cb_command = htole16(FXP_CB_COMMAND_NOP); tcbp[i].link_addr = htole32(sc->fxp_desc.cbl_addr + (((i + 1) & FXP_TXCB_MASK) * sizeof(struct fxp_cb_tx))); if (sc->flags & FXP_FLAG_EXT_TXCB) tcbp[i].tbd_array_addr = htole32(FXP_TXCB_DMA_ADDR(sc, &tcbp[i].tbd[2])); else tcbp[i].tbd_array_addr = htole32(FXP_TXCB_DMA_ADDR(sc, &tcbp[i].tbd[0])); txp[i].tx_next = &txp[(i + 1) & FXP_TXCB_MASK]; } /* * Set the suspend flag on the first TxCB and start the control * unit. It will execute the NOP and then suspend. */ tcbp->cb_command = htole16(FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); sc->fxp_desc.tx_first = sc->fxp_desc.tx_last = txp; sc->tx_queued = 1; fxp_scb_wait(sc); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); /* * Initialize receiver buffer area - RFA. */ fxp_scb_wait(sc); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->fxp_desc.rx_head->rx_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_RU_START); /* * Set current media. */ if (sc->miibus != NULL) mii_mediachg(device_get_softc(sc->miibus)); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; /* * Enable interrupts. */ #ifdef DEVICE_POLLING /* * ... but only do that if we are not polling. And because (presumably) * the default is interrupts on, we need to disable them explicitly! */ if ( ifp->if_flags & IFF_POLLING ) CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, FXP_SCB_INTR_DISABLE); else #endif /* DEVICE_POLLING */ CSR_WRITE_1(sc, FXP_CSR_SCB_INTRCNTL, 0); /* * Start stats updater. */ callout_reset(&sc->stat_ch, hz, fxp_tick, sc); splx(s); } static int fxp_serial_ifmedia_upd(struct ifnet *ifp) { return (0); } static void fxp_serial_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { ifmr->ifm_active = IFM_ETHER|IFM_MANUAL; } /* * Change media according to request. */ static int fxp_ifmedia_upd(struct ifnet *ifp) { struct fxp_softc *sc = ifp->if_softc; struct mii_data *mii; mii = device_get_softc(sc->miibus); mii_mediachg(mii); return (0); } /* * Notify the world which media we're using. */ static void fxp_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct fxp_softc *sc = ifp->if_softc; struct mii_data *mii; mii = device_get_softc(sc->miibus); mii_pollstat(mii); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; if (ifmr->ifm_status & IFM_10_T && sc->flags & FXP_FLAG_CU_RESUME_BUG) sc->cu_resume_bug = 1; else sc->cu_resume_bug = 0; } /* * Add a buffer to the end of the RFA buffer list. * Return 0 if successful, 1 for failure. A failure results in * adding the 'oldm' (if non-NULL) on to the end of the list - * tossing out its old contents and recycling it. * The RFA struct is stuck at the beginning of mbuf cluster and the * data pointer is fixed up to point just past it. */ static int fxp_add_rfabuf(struct fxp_softc *sc, struct fxp_rx *rxp) { struct mbuf *m; struct fxp_rfa *rfa, *p_rfa; struct fxp_rx *p_rx; bus_dmamap_t tmp_map; int error; m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); if (m == NULL) return (ENOBUFS); /* * Move the data pointer up so that the incoming data packet * will be 32-bit aligned. */ m->m_data += RFA_ALIGNMENT_FUDGE; /* * Get a pointer to the base of the mbuf cluster and move * data start past it. */ rfa = mtod(m, struct fxp_rfa *); m->m_data += sc->rfa_size; rfa->size = htole16(MCLBYTES - sc->rfa_size - RFA_ALIGNMENT_FUDGE); rfa->rfa_status = 0; rfa->rfa_control = htole16(FXP_RFA_CONTROL_EL); rfa->actual_size = 0; /* * Initialize the rest of the RFA. Note that since the RFA * is misaligned, we cannot store values directly. We're thus * using the le32enc() function which handles endianness and * is also alignment-safe. */ le32enc(&rfa->link_addr, 0xffffffff); le32enc(&rfa->rbd_addr, 0xffffffff); /* Map the RFA into DMA memory. */ error = bus_dmamap_load(sc->fxp_mtag, sc->spare_map, rfa, MCLBYTES - RFA_ALIGNMENT_FUDGE, fxp_dma_map_addr, &rxp->rx_addr, 0); if (error) { m_freem(m); return (error); } bus_dmamap_unload(sc->fxp_mtag, rxp->rx_map); tmp_map = sc->spare_map; sc->spare_map = rxp->rx_map; rxp->rx_map = tmp_map; rxp->rx_mbuf = m; bus_dmamap_sync(sc->fxp_mtag, rxp->rx_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); /* * If there are other buffers already on the list, attach this * one to the end by fixing up the tail to point to this one. */ if (sc->fxp_desc.rx_head != NULL) { p_rx = sc->fxp_desc.rx_tail; p_rfa = (struct fxp_rfa *) (p_rx->rx_mbuf->m_ext.ext_buf + RFA_ALIGNMENT_FUDGE); p_rx->rx_next = rxp; le32enc(&p_rfa->link_addr, rxp->rx_addr); p_rfa->rfa_control = 0; bus_dmamap_sync(sc->fxp_mtag, p_rx->rx_map, BUS_DMASYNC_PREWRITE); } else { rxp->rx_next = NULL; sc->fxp_desc.rx_head = rxp; } sc->fxp_desc.rx_tail = rxp; return (0); } static volatile int fxp_miibus_readreg(device_t dev, int phy, int reg) { struct fxp_softc *sc = device_get_softc(dev); int count = 10000; int value; CSR_WRITE_4(sc, FXP_CSR_MDICONTROL, (FXP_MDI_READ << 26) | (reg << 16) | (phy << 21)); while (((value = CSR_READ_4(sc, FXP_CSR_MDICONTROL)) & 0x10000000) == 0 && count--) DELAY(10); if (count <= 0) device_printf(dev, "fxp_miibus_readreg: timed out\n"); return (value & 0xffff); } static void fxp_miibus_writereg(device_t dev, int phy, int reg, int value) { struct fxp_softc *sc = device_get_softc(dev); int count = 10000; CSR_WRITE_4(sc, FXP_CSR_MDICONTROL, (FXP_MDI_WRITE << 26) | (reg << 16) | (phy << 21) | (value & 0xffff)); while ((CSR_READ_4(sc, FXP_CSR_MDICONTROL) & 0x10000000) == 0 && count--) DELAY(10); if (count <= 0) device_printf(dev, "fxp_miibus_writereg: timed out\n"); } static int fxp_ioctl(struct ifnet *ifp, u_long command, caddr_t data) { struct fxp_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; struct mii_data *mii; int s, error = 0; /* * Detaching causes us to call ioctl with the mutex owned. Preclude * that by saying we're busy if the lock is already held. */ if (mtx_owned(&sc->sc_mtx)) return (EBUSY); FXP_LOCK(sc); s = splimp(); switch (command) { case SIOCSIFFLAGS: if (ifp->if_flags & IFF_ALLMULTI) sc->flags |= FXP_FLAG_ALL_MCAST; else sc->flags &= ~FXP_FLAG_ALL_MCAST; /* * If interface is marked up and not running, then start it. * If it is marked down and running, stop it. * XXX If it's up then re-initialize it. This is so flags * such as IFF_PROMISC are handled. */ if (ifp->if_flags & IFF_UP) { fxp_init_body(sc); } else { if (ifp->if_flags & IFF_RUNNING) fxp_stop(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: if (ifp->if_flags & IFF_ALLMULTI) sc->flags |= FXP_FLAG_ALL_MCAST; else sc->flags &= ~FXP_FLAG_ALL_MCAST; /* * Multicast list has changed; set the hardware filter * accordingly. */ if ((sc->flags & FXP_FLAG_ALL_MCAST) == 0) fxp_mc_setup(sc); /* * fxp_mc_setup() can set FXP_FLAG_ALL_MCAST, so check it * again rather than else {}. */ if (sc->flags & FXP_FLAG_ALL_MCAST) fxp_init_body(sc); error = 0; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: if (sc->miibus != NULL) { mii = device_get_softc(sc->miibus); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); } else { error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, command); } break; default: /* * ether_ioctl() will eventually call fxp_start() which * will result in mutex recursion so drop it first. */ FXP_UNLOCK(sc); error = ether_ioctl(ifp, command, data); } if (mtx_owned(&sc->sc_mtx)) FXP_UNLOCK(sc); splx(s); return (error); } /* * Fill in the multicast address list and return number of entries. */ static int fxp_mc_addrs(struct fxp_softc *sc) { struct fxp_cb_mcs *mcsp = sc->mcsp; struct ifnet *ifp = &sc->sc_if; struct ifmultiaddr *ifma; int nmcasts; nmcasts = 0; if ((sc->flags & FXP_FLAG_ALL_MCAST) == 0) { #if __FreeBSD_version < 500000 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { #else TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { #endif if (ifma->ifma_addr->sa_family != AF_LINK) continue; if (nmcasts >= MAXMCADDR) { sc->flags |= FXP_FLAG_ALL_MCAST; nmcasts = 0; break; } bcopy(LLADDR((struct sockaddr_dl *)ifma->ifma_addr), &sc->mcsp->mc_addr[nmcasts][0], ETHER_ADDR_LEN); nmcasts++; } } mcsp->mc_cnt = htole16(nmcasts * ETHER_ADDR_LEN); return (nmcasts); } /* * Program the multicast filter. * * We have an artificial restriction that the multicast setup command * must be the first command in the chain, so we take steps to ensure * this. By requiring this, it allows us to keep up the performance of * the pre-initialized command ring (esp. link pointers) by not actually * inserting the mcsetup command in the ring - i.e. its link pointer * points to the TxCB ring, but the mcsetup descriptor itself is not part * of it. We then can do 'CU_START' on the mcsetup descriptor and have it * lead into the regular TxCB ring when it completes. * * This function must be called at splimp. */ static void fxp_mc_setup(struct fxp_softc *sc) { struct fxp_cb_mcs *mcsp = sc->mcsp; struct ifnet *ifp = &sc->sc_if; struct fxp_tx *txp; int count; /* * If there are queued commands, we must wait until they are all * completed. If we are already waiting, then add a NOP command * with interrupt option so that we're notified when all commands * have been completed - fxp_start() ensures that no additional * TX commands will be added when need_mcsetup is true. */ if (sc->tx_queued) { /* * need_mcsetup will be true if we are already waiting for the * NOP command to be completed (see below). In this case, bail. */ if (sc->need_mcsetup) return; sc->need_mcsetup = 1; /* * Add a NOP command with interrupt so that we are notified * when all TX commands have been processed. */ txp = sc->fxp_desc.tx_last->tx_next; txp->tx_mbuf = NULL; txp->tx_cb->cb_status = 0; txp->tx_cb->cb_command = htole16(FXP_CB_COMMAND_NOP | FXP_CB_COMMAND_S | FXP_CB_COMMAND_I); /* * Advance the end of list forward. */ sc->fxp_desc.tx_last->tx_cb->cb_command &= htole16(~FXP_CB_COMMAND_S); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); sc->fxp_desc.tx_last = txp; sc->tx_queued++; /* * Issue a resume in case the CU has just suspended. */ fxp_scb_wait(sc); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_RESUME); /* * Set a 5 second timer just in case we don't hear from the * card again. */ ifp->if_timer = 5; return; } sc->need_mcsetup = 0; /* * Initialize multicast setup descriptor. */ mcsp->cb_status = 0; mcsp->cb_command = htole16(FXP_CB_COMMAND_MCAS | FXP_CB_COMMAND_S | FXP_CB_COMMAND_I); mcsp->link_addr = htole32(sc->fxp_desc.cbl_addr); txp = &sc->fxp_desc.mcs_tx; txp->tx_mbuf = NULL; txp->tx_cb = (struct fxp_cb_tx *)sc->mcsp; txp->tx_next = sc->fxp_desc.tx_list; (void) fxp_mc_addrs(sc); sc->fxp_desc.tx_first = sc->fxp_desc.tx_last = txp; sc->tx_queued = 1; /* * Wait until command unit is not active. This should never * be the case when nothing is queued, but make sure anyway. */ count = 100; while ((CSR_READ_1(sc, FXP_CSR_SCB_RUSCUS) >> 6) == FXP_SCB_CUS_ACTIVE && --count) DELAY(10); if (count == 0) { device_printf(sc->dev, "command queue timeout\n"); return; } /* * Start the multicast setup command. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->mcs_tag, sc->mcs_map, BUS_DMASYNC_PREWRITE); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->mcs_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); ifp->if_timer = 2; return; } static u_int32_t fxp_ucode_d101a[] = D101_A_RCVBUNDLE_UCODE; static u_int32_t fxp_ucode_d101b0[] = D101_B0_RCVBUNDLE_UCODE; static u_int32_t fxp_ucode_d101ma[] = D101M_B_RCVBUNDLE_UCODE; static u_int32_t fxp_ucode_d101s[] = D101S_RCVBUNDLE_UCODE; static u_int32_t fxp_ucode_d102[] = D102_B_RCVBUNDLE_UCODE; static u_int32_t fxp_ucode_d102c[] = D102_C_RCVBUNDLE_UCODE; #define UCODE(x) x, sizeof(x) struct ucode { u_int32_t revision; u_int32_t *ucode; int length; u_short int_delay_offset; u_short bundle_max_offset; } ucode_table[] = { { FXP_REV_82558_A4, UCODE(fxp_ucode_d101a), D101_CPUSAVER_DWORD, 0 }, { FXP_REV_82558_B0, UCODE(fxp_ucode_d101b0), D101_CPUSAVER_DWORD, 0 }, { FXP_REV_82559_A0, UCODE(fxp_ucode_d101ma), D101M_CPUSAVER_DWORD, D101M_CPUSAVER_BUNDLE_MAX_DWORD }, { FXP_REV_82559S_A, UCODE(fxp_ucode_d101s), D101S_CPUSAVER_DWORD, D101S_CPUSAVER_BUNDLE_MAX_DWORD }, { FXP_REV_82550, UCODE(fxp_ucode_d102), D102_B_CPUSAVER_DWORD, D102_B_CPUSAVER_BUNDLE_MAX_DWORD }, { FXP_REV_82550_C, UCODE(fxp_ucode_d102c), D102_C_CPUSAVER_DWORD, D102_C_CPUSAVER_BUNDLE_MAX_DWORD }, { 0, NULL, 0, 0, 0 } }; static void fxp_load_ucode(struct fxp_softc *sc) { struct ucode *uc; struct fxp_cb_ucode *cbp; for (uc = ucode_table; uc->ucode != NULL; uc++) if (sc->revision == uc->revision) break; if (uc->ucode == NULL) return; cbp = (struct fxp_cb_ucode *)sc->fxp_desc.cbl_list; cbp->cb_status = 0; cbp->cb_command = htole16(FXP_CB_COMMAND_UCODE | FXP_CB_COMMAND_EL); cbp->link_addr = 0xffffffff; /* (no) next command */ memcpy(cbp->ucode, uc->ucode, uc->length); if (uc->int_delay_offset) *(u_int16_t *)&cbp->ucode[uc->int_delay_offset] = htole16(sc->tunable_int_delay + sc->tunable_int_delay / 2); if (uc->bundle_max_offset) *(u_int16_t *)&cbp->ucode[uc->bundle_max_offset] = htole16(sc->tunable_bundle_max); /* * Download the ucode to the chip. */ fxp_scb_wait(sc); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_PREWRITE); CSR_WRITE_4(sc, FXP_CSR_SCB_GENERAL, sc->fxp_desc.cbl_addr); fxp_scb_cmd(sc, FXP_SCB_COMMAND_CU_START); /* ...and wait for it to complete. */ fxp_dma_wait(sc, &cbp->cb_status, sc->cbl_tag, sc->cbl_map); bus_dmamap_sync(sc->cbl_tag, sc->cbl_map, BUS_DMASYNC_POSTWRITE); device_printf(sc->dev, "Microcode loaded, int_delay: %d usec bundle_max: %d\n", sc->tunable_int_delay, uc->bundle_max_offset == 0 ? 0 : sc->tunable_bundle_max); sc->flags |= FXP_FLAG_UCODE; } static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) { int error, value; value = *(int *)arg1; error = sysctl_handle_int(oidp, &value, 0, req); if (error || !req->newptr) return (error); if (value < low || value > high) return (EINVAL); *(int *)arg1 = value; return (0); } /* * Interrupt delay is expressed in microseconds, a multiplier is used * to convert this to the appropriate clock ticks before using. */ static int sysctl_hw_fxp_int_delay(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, 300, 3000)); } static int sysctl_hw_fxp_bundle_max(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, 1, 0xffff)); }