/*- * Copyright (c) 1997, 1998 * Bill Paul . 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, 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul 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 Bill Paul OR THE VOICES IN HIS HEAD * 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("$FreeBSD$"); /* * VIA Rhine fast ethernet PCI NIC driver * * Supports various network adapters based on the VIA Rhine * and Rhine II PCI controllers, including the D-Link DFE530TX. * Datasheets are available at http://www.via.com.tw. * * Written by Bill Paul * Electrical Engineering Department * Columbia University, New York City */ /* * The VIA Rhine controllers are similar in some respects to the * the DEC tulip chips, except less complicated. The controller * uses an MII bus and an external physical layer interface. The * receiver has a one entry perfect filter and a 64-bit hash table * multicast filter. Transmit and receive descriptors are similar * to the tulip. * * The Rhine has a serious flaw in its transmit DMA mechanism: * transmit buffers must be longword aligned. Unfortunately, * FreeBSD doesn't guarantee that mbufs will be filled in starting * at longword boundaries, so we have to do a buffer copy before * transmission. */ #ifdef HAVE_KERNEL_OPTION_HEADERS #include "opt_device_polling.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for vtophys */ #include /* for vtophys */ #include #include #include #include #include #include #include #include #define VR_USEIOSPACE #include MODULE_DEPEND(vr, pci, 1, 1, 1); MODULE_DEPEND(vr, ether, 1, 1, 1); MODULE_DEPEND(vr, miibus, 1, 1, 1); /* "device miibus" required. See GENERIC if you get errors here. */ #include "miibus_if.h" #undef VR_USESWSHIFT /* * Various supported device vendors/types and their names. */ static struct vr_type vr_devs[] = { { VIA_VENDORID, VIA_DEVICEID_RHINE, "VIA VT3043 Rhine I 10/100BaseTX" }, { VIA_VENDORID, VIA_DEVICEID_RHINE_II, "VIA VT86C100A Rhine II 10/100BaseTX" }, { VIA_VENDORID, VIA_DEVICEID_RHINE_II_2, "VIA VT6102 Rhine II 10/100BaseTX" }, { VIA_VENDORID, VIA_DEVICEID_RHINE_III, "VIA VT6105 Rhine III 10/100BaseTX" }, { VIA_VENDORID, VIA_DEVICEID_RHINE_III_M, "VIA VT6105M Rhine III 10/100BaseTX" }, { DELTA_VENDORID, DELTA_DEVICEID_RHINE_II, "Delta Electronics Rhine II 10/100BaseTX" }, { ADDTRON_VENDORID, ADDTRON_DEVICEID_RHINE_II, "Addtron Technology Rhine II 10/100BaseTX" }, { 0, 0, NULL } }; static int vr_probe(device_t); static int vr_attach(device_t); static int vr_detach(device_t); static int vr_newbuf(struct vr_softc *, struct vr_chain_onefrag *, struct mbuf *); static int vr_encap(struct vr_softc *, struct vr_chain *, struct mbuf * ); static void vr_rxeof(struct vr_softc *); static void vr_rxeoc(struct vr_softc *); static void vr_txeof(struct vr_softc *); static void vr_tick(void *); static void vr_intr(void *); static void vr_start(struct ifnet *); static void vr_start_locked(struct ifnet *); static int vr_ioctl(struct ifnet *, u_long, caddr_t); static void vr_init(void *); static void vr_init_locked(struct vr_softc *); static void vr_stop(struct vr_softc *); static void vr_watchdog(struct ifnet *); static void vr_shutdown(device_t); static int vr_ifmedia_upd(struct ifnet *); static void vr_ifmedia_sts(struct ifnet *, struct ifmediareq *); #ifdef VR_USESWSHIFT static void vr_mii_sync(struct vr_softc *); static void vr_mii_send(struct vr_softc *, uint32_t, int); #endif static int vr_mii_readreg(struct vr_softc *, struct vr_mii_frame *); static int vr_mii_writereg(struct vr_softc *, struct vr_mii_frame *); static int vr_miibus_readreg(device_t, uint16_t, uint16_t); static int vr_miibus_writereg(device_t, uint16_t, uint16_t, uint16_t); static void vr_miibus_statchg(device_t); static void vr_setcfg(struct vr_softc *, int); static void vr_setmulti(struct vr_softc *); static void vr_reset(struct vr_softc *); static int vr_list_rx_init(struct vr_softc *); static int vr_list_tx_init(struct vr_softc *); #ifdef VR_USEIOSPACE #define VR_RES SYS_RES_IOPORT #define VR_RID VR_PCI_LOIO #else #define VR_RES SYS_RES_MEMORY #define VR_RID VR_PCI_LOMEM #endif static device_method_t vr_methods[] = { /* Device interface */ DEVMETHOD(device_probe, vr_probe), DEVMETHOD(device_attach, vr_attach), DEVMETHOD(device_detach, vr_detach), DEVMETHOD(device_shutdown, vr_shutdown), /* bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), /* MII interface */ DEVMETHOD(miibus_readreg, vr_miibus_readreg), DEVMETHOD(miibus_writereg, vr_miibus_writereg), DEVMETHOD(miibus_statchg, vr_miibus_statchg), { 0, 0 } }; static driver_t vr_driver = { "vr", vr_methods, sizeof(struct vr_softc) }; static devclass_t vr_devclass; DRIVER_MODULE(vr, pci, vr_driver, vr_devclass, 0, 0); DRIVER_MODULE(miibus, vr, miibus_driver, miibus_devclass, 0, 0); #define VR_SETBIT(sc, reg, x) \ CSR_WRITE_1(sc, reg, \ CSR_READ_1(sc, reg) | (x)) #define VR_CLRBIT(sc, reg, x) \ CSR_WRITE_1(sc, reg, \ CSR_READ_1(sc, reg) & ~(x)) #define VR_SETBIT16(sc, reg, x) \ CSR_WRITE_2(sc, reg, \ CSR_READ_2(sc, reg) | (x)) #define VR_CLRBIT16(sc, reg, x) \ CSR_WRITE_2(sc, reg, \ CSR_READ_2(sc, reg) & ~(x)) #define VR_SETBIT32(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) | (x)) #define VR_CLRBIT32(sc, reg, x) \ CSR_WRITE_4(sc, reg, \ CSR_READ_4(sc, reg) & ~(x)) #define SIO_SET(x) \ CSR_WRITE_1(sc, VR_MIICMD, \ CSR_READ_1(sc, VR_MIICMD) | (x)) #define SIO_CLR(x) \ CSR_WRITE_1(sc, VR_MIICMD, \ CSR_READ_1(sc, VR_MIICMD) & ~(x)) #ifdef VR_USESWSHIFT /* * Sync the PHYs by setting data bit and strobing the clock 32 times. */ static void vr_mii_sync(struct vr_softc *sc) { register int i; SIO_SET(VR_MIICMD_DIR|VR_MIICMD_DATAIN); for (i = 0; i < 32; i++) { SIO_SET(VR_MIICMD_CLK); DELAY(1); SIO_CLR(VR_MIICMD_CLK); DELAY(1); } } /* * Clock a series of bits through the MII. */ static void vr_mii_send(struct vr_softc *sc, uint32_t bits, int cnt) { int i; SIO_CLR(VR_MIICMD_CLK); for (i = (0x1 << (cnt - 1)); i; i >>= 1) { if (bits & i) { SIO_SET(VR_MIICMD_DATAIN); } else { SIO_CLR(VR_MIICMD_DATAIN); } DELAY(1); SIO_CLR(VR_MIICMD_CLK); DELAY(1); SIO_SET(VR_MIICMD_CLK); } } #endif /* * Read an PHY register through the MII. */ static int vr_mii_readreg(struct vr_softc *sc, struct vr_mii_frame *frame) #ifdef VR_USESWSHIFT { int i, ack; /* Set up frame for RX. */ frame->mii_stdelim = VR_MII_STARTDELIM; frame->mii_opcode = VR_MII_READOP; frame->mii_turnaround = 0; frame->mii_data = 0; CSR_WRITE_1(sc, VR_MIICMD, 0); VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM); /* Turn on data xmit. */ SIO_SET(VR_MIICMD_DIR); vr_mii_sync(sc); /* Send command/address info. */ vr_mii_send(sc, frame->mii_stdelim, 2); vr_mii_send(sc, frame->mii_opcode, 2); vr_mii_send(sc, frame->mii_phyaddr, 5); vr_mii_send(sc, frame->mii_regaddr, 5); /* Idle bit. */ SIO_CLR((VR_MIICMD_CLK|VR_MIICMD_DATAIN)); DELAY(1); SIO_SET(VR_MIICMD_CLK); DELAY(1); /* Turn off xmit. */ SIO_CLR(VR_MIICMD_DIR); /* Check for ack */ SIO_CLR(VR_MIICMD_CLK); DELAY(1); ack = CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT; SIO_SET(VR_MIICMD_CLK); DELAY(1); /* * Now try reading data bits. If the ack failed, we still * need to clock through 16 cycles to keep the PHY(s) in sync. */ if (ack) { for(i = 0; i < 16; i++) { SIO_CLR(VR_MIICMD_CLK); DELAY(1); SIO_SET(VR_MIICMD_CLK); DELAY(1); } goto fail; } for (i = 0x8000; i; i >>= 1) { SIO_CLR(VR_MIICMD_CLK); DELAY(1); if (!ack) { if (CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT) frame->mii_data |= i; DELAY(1); } SIO_SET(VR_MIICMD_CLK); DELAY(1); } fail: SIO_CLR(VR_MIICMD_CLK); DELAY(1); SIO_SET(VR_MIICMD_CLK); DELAY(1); if (ack) return (1); return (0); } #else { int i; /* Set the PHY address. */ CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)| frame->mii_phyaddr); /* Set the register address. */ CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr); VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_READ_ENB); for (i = 0; i < 10000; i++) { if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_READ_ENB) == 0) break; DELAY(1); } frame->mii_data = CSR_READ_2(sc, VR_MIIDATA); return (0); } #endif /* * Write to a PHY register through the MII. */ static int vr_mii_writereg(struct vr_softc *sc, struct vr_mii_frame *frame) #ifdef VR_USESWSHIFT { CSR_WRITE_1(sc, VR_MIICMD, 0); VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM); /* Set up frame for TX. */ frame->mii_stdelim = VR_MII_STARTDELIM; frame->mii_opcode = VR_MII_WRITEOP; frame->mii_turnaround = VR_MII_TURNAROUND; /* Turn on data output. */ SIO_SET(VR_MIICMD_DIR); vr_mii_sync(sc); vr_mii_send(sc, frame->mii_stdelim, 2); vr_mii_send(sc, frame->mii_opcode, 2); vr_mii_send(sc, frame->mii_phyaddr, 5); vr_mii_send(sc, frame->mii_regaddr, 5); vr_mii_send(sc, frame->mii_turnaround, 2); vr_mii_send(sc, frame->mii_data, 16); /* Idle bit. */ SIO_SET(VR_MIICMD_CLK); DELAY(1); SIO_CLR(VR_MIICMD_CLK); DELAY(1); /* Turn off xmit. */ SIO_CLR(VR_MIICMD_DIR); return (0); } #else { int i; /* Set the PHY address. */ CSR_WRITE_1(sc, VR_PHYADDR, (CSR_READ_1(sc, VR_PHYADDR)& 0xe0)| frame->mii_phyaddr); /* Set the register address and data to write. */ CSR_WRITE_1(sc, VR_MIIADDR, frame->mii_regaddr); CSR_WRITE_2(sc, VR_MIIDATA, frame->mii_data); VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_WRITE_ENB); for (i = 0; i < 10000; i++) { if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_WRITE_ENB) == 0) break; DELAY(1); } return (0); } #endif static int vr_miibus_readreg(device_t dev, uint16_t phy, uint16_t reg) { struct vr_mii_frame frame; struct vr_softc *sc = device_get_softc(dev); switch (sc->vr_revid) { case REV_ID_VT6102_APOLLO: if (phy != 1) { frame.mii_data = 0; goto out; } default: break; } bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = phy; frame.mii_regaddr = reg; vr_mii_readreg(sc, &frame); out: return (frame.mii_data); } static int vr_miibus_writereg(device_t dev, uint16_t phy, uint16_t reg, uint16_t data) { struct vr_mii_frame frame; struct vr_softc *sc = device_get_softc(dev); switch (sc->vr_revid) { case REV_ID_VT6102_APOLLO: if (phy != 1) return (0); default: break; } bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = phy; frame.mii_regaddr = reg; frame.mii_data = data; vr_mii_writereg(sc, &frame); return (0); } static void vr_miibus_statchg(device_t dev) { struct mii_data *mii; struct vr_softc *sc = device_get_softc(dev); mii = device_get_softc(sc->vr_miibus); vr_setcfg(sc, mii->mii_media_active); } /* * Program the 64-bit multicast hash filter. */ static void vr_setmulti(struct vr_softc *sc) { struct ifnet *ifp = sc->vr_ifp; int h = 0; uint32_t hashes[2] = { 0, 0 }; struct ifmultiaddr *ifma; uint8_t rxfilt; int mcnt = 0; VR_LOCK_ASSERT(sc); rxfilt = CSR_READ_1(sc, VR_RXCFG); if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { rxfilt |= VR_RXCFG_RX_MULTI; CSR_WRITE_1(sc, VR_RXCFG, rxfilt); CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF); CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF); return; } /* First, zero out all the existing hash bits. */ CSR_WRITE_4(sc, VR_MAR0, 0); CSR_WRITE_4(sc, VR_MAR1, 0); /* Now program new ones. */ IF_ADDR_LOCK(ifp); TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; h = ether_crc32_be(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); mcnt++; } IF_ADDR_UNLOCK(ifp); if (mcnt) rxfilt |= VR_RXCFG_RX_MULTI; else rxfilt &= ~VR_RXCFG_RX_MULTI; CSR_WRITE_4(sc, VR_MAR0, hashes[0]); CSR_WRITE_4(sc, VR_MAR1, hashes[1]); CSR_WRITE_1(sc, VR_RXCFG, rxfilt); } /* * In order to fiddle with the * 'full-duplex' and '100Mbps' bits in the netconfig register, we * first have to put the transmit and/or receive logic in the idle state. */ static void vr_setcfg(struct vr_softc *sc, int media) { int restart = 0; VR_LOCK_ASSERT(sc); if (CSR_READ_2(sc, VR_COMMAND) & (VR_CMD_TX_ON|VR_CMD_RX_ON)) { restart = 1; VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON)); } if ((media & IFM_GMASK) == IFM_FDX) VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX); else VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX); if (restart) VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON); } static void vr_reset(struct vr_softc *sc) { register int i; /*VR_LOCK_ASSERT(sc);*/ /* XXX: Called during attach w/o lock. */ VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET); for (i = 0; i < VR_TIMEOUT; i++) { DELAY(10); if (!(CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RESET)) break; } if (i == VR_TIMEOUT) { if (sc->vr_revid < REV_ID_VT3065_A) if_printf(sc->vr_ifp, "reset never completed!\n"); else { /* Use newer force reset command */ if_printf(sc->vr_ifp, "Using force reset command.\n"); VR_SETBIT(sc, VR_MISC_CR1, VR_MISCCR1_FORSRST); } } /* Wait a little while for the chip to get its brains in order. */ DELAY(1000); } /* * Probe for a VIA Rhine chip. Check the PCI vendor and device * IDs against our list and return a device name if we find a match. */ static int vr_probe(device_t dev) { struct vr_type *t = vr_devs; while (t->vr_name != NULL) { if ((pci_get_vendor(dev) == t->vr_vid) && (pci_get_device(dev) == t->vr_did)) { device_set_desc(dev, t->vr_name); return (BUS_PROBE_DEFAULT); } t++; } return (ENXIO); } /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. */ static int vr_attach(dev) device_t dev; { int i; u_char eaddr[ETHER_ADDR_LEN]; struct vr_softc *sc; struct ifnet *ifp; int unit, error = 0, rid; sc = device_get_softc(dev); unit = device_get_unit(dev); mtx_init(&sc->vr_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF); callout_init_mtx(&sc->vr_stat_callout, &sc->vr_mtx, 0); /* * Map control/status registers. */ pci_enable_busmaster(dev); sc->vr_revid = pci_read_config(dev, VR_PCI_REVID, 4) & 0x000000FF; rid = VR_RID; sc->vr_res = bus_alloc_resource_any(dev, VR_RES, &rid, RF_ACTIVE); if (sc->vr_res == NULL) { device_printf(dev, "couldn't map ports/memory\n"); error = ENXIO; goto fail; } sc->vr_btag = rman_get_bustag(sc->vr_res); sc->vr_bhandle = rman_get_bushandle(sc->vr_res); /* Allocate interrupt */ rid = 0; sc->vr_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); if (sc->vr_irq == NULL) { device_printf(dev, "couldn't map interrupt\n"); error = ENXIO; goto fail; } /* Allocate ifnet structure. */ ifp = sc->vr_ifp = if_alloc(IFT_ETHER); if (ifp == NULL) { device_printf(dev, "can not if_alloc()\n"); error = ENOSPC; goto fail; } ifp->if_softc = sc; if_initname(ifp, device_get_name(dev), device_get_unit(dev)); ifp->if_mtu = ETHERMTU; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = vr_ioctl; ifp->if_start = vr_start; ifp->if_watchdog = vr_watchdog; ifp->if_init = vr_init; ifp->if_baudrate = 10000000; IFQ_SET_MAXLEN(&ifp->if_snd, VR_TX_LIST_CNT - 1); ifp->if_snd.ifq_maxlen = VR_TX_LIST_CNT - 1; IFQ_SET_READY(&ifp->if_snd); ifp->if_capenable = ifp->if_capabilities; #ifdef DEVICE_POLLING ifp->if_capabilities |= IFCAP_POLLING; #endif /* * Windows may put the chip in suspend mode when it * shuts down. Be sure to kick it in the head to wake it * up again. */ VR_CLRBIT(sc, VR_STICKHW, (VR_STICKHW_DS0|VR_STICKHW_DS1)); /* Reset the adapter. */ vr_reset(sc); /* * Turn on bit2 (MIION) in PCI configuration register 0x53 during * initialization and disable AUTOPOLL. */ pci_write_config(dev, VR_PCI_MODE, pci_read_config(dev, VR_PCI_MODE, 4) | (VR_MODE3_MIION << 24), 4); VR_CLRBIT(sc, VR_MIICMD, VR_MIICMD_AUTOPOLL); /* * Get station address. The way the Rhine chips work, * you're not allowed to directly access the EEPROM once * they've been programmed a special way. Consequently, * we need to read the node address from the PAR0 and PAR1 * registers. */ VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD); DELAY(200); for (i = 0; i < ETHER_ADDR_LEN; i++) eaddr[i] = CSR_READ_1(sc, VR_PAR0 + i); sc->vr_ldata = contigmalloc(sizeof(struct vr_list_data), M_DEVBUF, M_NOWAIT | M_ZERO, 0, 0xffffffff, PAGE_SIZE, 0); if (sc->vr_ldata == NULL) { device_printf(dev, "no memory for list buffers!\n"); error = ENXIO; goto fail; } /* Do MII setup. */ if (mii_phy_probe(dev, &sc->vr_miibus, vr_ifmedia_upd, vr_ifmedia_sts)) { device_printf(dev, "MII without any phy!\n"); error = ENXIO; goto fail; } /* Call MI attach routine. */ ether_ifattach(ifp, eaddr); sc->suspended = 0; /* Hook interrupt last to avoid having to lock softc */ error = bus_setup_intr(dev, sc->vr_irq, INTR_TYPE_NET | INTR_MPSAFE, vr_intr, sc, &sc->vr_intrhand); if (error) { device_printf(dev, "couldn't set up irq\n"); ether_ifdetach(ifp); goto fail; } fail: if (error) vr_detach(dev); return (error); } /* * Shutdown hardware and free up resources. This can be called any * time after the mutex has been initialized. It is called in both * the error case in attach and the normal detach case so it needs * to be careful about only freeing resources that have actually been * allocated. */ static int vr_detach(device_t dev) { struct vr_softc *sc = device_get_softc(dev); struct ifnet *ifp = sc->vr_ifp; KASSERT(mtx_initialized(&sc->vr_mtx), ("vr mutex not initialized")); #ifdef DEVICE_POLLING if (ifp->if_capenable & IFCAP_POLLING) ether_poll_deregister(ifp); #endif /* These should only be active if attach succeeded */ if (device_is_attached(dev)) { VR_LOCK(sc); sc->suspended = 1; vr_stop(sc); VR_UNLOCK(sc); callout_drain(&sc->vr_stat_callout); ether_ifdetach(ifp); } if (sc->vr_miibus) device_delete_child(dev, sc->vr_miibus); bus_generic_detach(dev); if (sc->vr_intrhand) bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand); if (sc->vr_irq) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq); if (sc->vr_res) bus_release_resource(dev, VR_RES, VR_RID, sc->vr_res); if (ifp) if_free(ifp); if (sc->vr_ldata) contigfree(sc->vr_ldata, sizeof(struct vr_list_data), M_DEVBUF); mtx_destroy(&sc->vr_mtx); return (0); } /* * Initialize the transmit descriptors. */ static int vr_list_tx_init(struct vr_softc *sc) { struct vr_chain_data *cd; struct vr_list_data *ld; int i; cd = &sc->vr_cdata; ld = sc->vr_ldata; for (i = 0; i < VR_TX_LIST_CNT; i++) { cd->vr_tx_chain[i].vr_ptr = &ld->vr_tx_list[i]; if (i == (VR_TX_LIST_CNT - 1)) cd->vr_tx_chain[i].vr_nextdesc = &cd->vr_tx_chain[0]; else cd->vr_tx_chain[i].vr_nextdesc = &cd->vr_tx_chain[i + 1]; } cd->vr_tx_cons = cd->vr_tx_prod = &cd->vr_tx_chain[0]; return (0); } /* * Initialize the RX descriptors and allocate mbufs for them. Note that * we arrange the descriptors in a closed ring, so that the last descriptor * points back to the first. */ static int vr_list_rx_init(struct vr_softc *sc) { struct vr_chain_data *cd; struct vr_list_data *ld; int i; VR_LOCK_ASSERT(sc); cd = &sc->vr_cdata; ld = sc->vr_ldata; for (i = 0; i < VR_RX_LIST_CNT; i++) { cd->vr_rx_chain[i].vr_ptr = (struct vr_desc *)&ld->vr_rx_list[i]; if (vr_newbuf(sc, &cd->vr_rx_chain[i], NULL) == ENOBUFS) return (ENOBUFS); if (i == (VR_RX_LIST_CNT - 1)) { cd->vr_rx_chain[i].vr_nextdesc = &cd->vr_rx_chain[0]; ld->vr_rx_list[i].vr_next = vtophys(&ld->vr_rx_list[0]); } else { cd->vr_rx_chain[i].vr_nextdesc = &cd->vr_rx_chain[i + 1]; ld->vr_rx_list[i].vr_next = vtophys(&ld->vr_rx_list[i + 1]); } } cd->vr_rx_head = &cd->vr_rx_chain[0]; return (0); } /* * Initialize an RX descriptor and attach an MBUF cluster. * Note: the length fields are only 11 bits wide, which means the * largest size we can specify is 2047. This is important because * MCLBYTES is 2048, so we have to subtract one otherwise we'll * overflow the field and make a mess. */ static int vr_newbuf(struct vr_softc *sc, struct vr_chain_onefrag *c, struct mbuf *m) { struct mbuf *m_new = NULL; if (m == NULL) { MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) return (ENOBUFS); MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { m_freem(m_new); return (ENOBUFS); } m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; } else { m_new = m; m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; m_new->m_data = m_new->m_ext.ext_buf; } m_adj(m_new, sizeof(uint64_t)); c->vr_mbuf = m_new; c->vr_ptr->vr_status = VR_RXSTAT; c->vr_ptr->vr_data = vtophys(mtod(m_new, caddr_t)); c->vr_ptr->vr_ctl = VR_RXCTL | VR_RXLEN; return (0); } /* * A frame has been uploaded: pass the resulting mbuf chain up to * the higher level protocols. */ static void vr_rxeof(struct vr_softc *sc) { struct mbuf *m, *m0; struct ifnet *ifp; struct vr_chain_onefrag *cur_rx; int total_len = 0; uint32_t rxstat; VR_LOCK_ASSERT(sc); ifp = sc->vr_ifp; while (!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) & VR_RXSTAT_OWN)) { #ifdef DEVICE_POLLING if (ifp->if_capenable & IFCAP_POLLING) { if (sc->rxcycles <= 0) break; sc->rxcycles--; } #endif m0 = NULL; cur_rx = sc->vr_cdata.vr_rx_head; sc->vr_cdata.vr_rx_head = cur_rx->vr_nextdesc; m = cur_rx->vr_mbuf; /* * If an error occurs, update stats, clear the * status word and leave the mbuf cluster in place: * it should simply get re-used next time this descriptor * comes up in the ring. */ if (rxstat & VR_RXSTAT_RXERR) { ifp->if_ierrors++; if_printf(ifp, "rx error (%02x):", rxstat & 0x000000ff); if (rxstat & VR_RXSTAT_CRCERR) printf(" crc error"); if (rxstat & VR_RXSTAT_FRAMEALIGNERR) printf(" frame alignment error\n"); if (rxstat & VR_RXSTAT_FIFOOFLOW) printf(" FIFO overflow"); if (rxstat & VR_RXSTAT_GIANT) printf(" received giant packet"); if (rxstat & VR_RXSTAT_RUNT) printf(" received runt packet"); if (rxstat & VR_RXSTAT_BUSERR) printf(" system bus error"); if (rxstat & VR_RXSTAT_BUFFERR) printf("rx buffer error"); printf("\n"); vr_newbuf(sc, cur_rx, m); continue; } /* No errors; receive the packet. */ total_len = VR_RXBYTES(cur_rx->vr_ptr->vr_status); /* * XXX The VIA Rhine chip includes the CRC with every * received frame, and there's no way to turn this * behavior off (at least, I can't find anything in * the manual that explains how to do it) so we have * to trim off the CRC manually. */ total_len -= ETHER_CRC_LEN; m0 = m_devget(mtod(m, char *), total_len, ETHER_ALIGN, ifp, NULL); vr_newbuf(sc, cur_rx, m); if (m0 == NULL) { ifp->if_ierrors++; continue; } m = m0; ifp->if_ipackets++; VR_UNLOCK(sc); (*ifp->if_input)(ifp, m); VR_LOCK(sc); } } static void vr_rxeoc(struct vr_softc *sc) { struct ifnet *ifp = sc->vr_ifp; int i; VR_LOCK_ASSERT(sc); ifp->if_ierrors++; VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON); DELAY(10000); /* Wait for receiver to stop */ for (i = 0x400; i && (CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RX_ON); i--) { ; } if (!i) { if_printf(ifp, "rx shutdown error!\n"); sc->vr_flags |= VR_F_RESTART; return; } vr_rxeof(sc); CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr)); VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON); VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO); } /* * A frame was downloaded to the chip. It's safe for us to clean up * the list buffers. */ static void vr_txeof(struct vr_softc *sc) { struct vr_chain *cur_tx; struct ifnet *ifp = sc->vr_ifp; VR_LOCK_ASSERT(sc); /* * Go through our tx list and free mbufs for those * frames that have been transmitted. */ cur_tx = sc->vr_cdata.vr_tx_cons; while (cur_tx->vr_mbuf != NULL) { uint32_t txstat; int i; txstat = cur_tx->vr_ptr->vr_status; if ((txstat & VR_TXSTAT_ABRT) || (txstat & VR_TXSTAT_UDF)) { for (i = 0x400; i && (CSR_READ_2(sc, VR_COMMAND) & VR_CMD_TX_ON); i--) ; /* Wait for chip to shutdown */ if (!i) { if_printf(ifp, "tx shutdown timeout\n"); sc->vr_flags |= VR_F_RESTART; break; } VR_TXOWN(cur_tx) = VR_TXSTAT_OWN; CSR_WRITE_4(sc, VR_TXADDR, vtophys(cur_tx->vr_ptr)); break; } if (txstat & VR_TXSTAT_OWN) break; if (txstat & VR_TXSTAT_ERRSUM) { ifp->if_oerrors++; if (txstat & VR_TXSTAT_DEFER) ifp->if_collisions++; if (txstat & VR_TXSTAT_LATECOLL) ifp->if_collisions++; } ifp->if_collisions +=(txstat & VR_TXSTAT_COLLCNT) >> 3; ifp->if_opackets++; m_freem(cur_tx->vr_mbuf); cur_tx->vr_mbuf = NULL; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; cur_tx = cur_tx->vr_nextdesc; } sc->vr_cdata.vr_tx_cons = cur_tx; if (cur_tx->vr_mbuf == NULL) ifp->if_timer = 0; } static void vr_tick(void *xsc) { struct vr_softc *sc = xsc; struct mii_data *mii; VR_LOCK_ASSERT(sc); if (sc->vr_flags & VR_F_RESTART) { if_printf(sc->vr_ifp, "restarting\n"); vr_stop(sc); vr_reset(sc); vr_init_locked(sc); sc->vr_flags &= ~VR_F_RESTART; } mii = device_get_softc(sc->vr_miibus); mii_tick(mii); callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc); } #ifdef DEVICE_POLLING static poll_handler_t vr_poll; static poll_handler_t vr_poll_locked; static void vr_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) { struct vr_softc *sc = ifp->if_softc; VR_LOCK(sc); if (ifp->if_drv_flags & IFF_DRV_RUNNING) vr_poll_locked(ifp, cmd, count); VR_UNLOCK(sc); } static void vr_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count) { struct vr_softc *sc = ifp->if_softc; VR_LOCK_ASSERT(sc); sc->rxcycles = count; vr_rxeof(sc); vr_txeof(sc); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) vr_start_locked(ifp); if (cmd == POLL_AND_CHECK_STATUS) { uint16_t status; /* Also check status register. */ status = CSR_READ_2(sc, VR_ISR); if (status) CSR_WRITE_2(sc, VR_ISR, status); if ((status & VR_INTRS) == 0) return; if (status & VR_ISR_RX_DROPPED) { if_printf(ifp, "rx packet lost\n"); ifp->if_ierrors++; } if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW)) { if_printf(ifp, "receive error (%04x)", status); if (status & VR_ISR_RX_NOBUF) printf(" no buffers"); if (status & VR_ISR_RX_OFLOW) printf(" overflow"); if (status & VR_ISR_RX_DROPPED) printf(" packet lost"); printf("\n"); vr_rxeoc(sc); } if ((status & VR_ISR_BUSERR) || (status & VR_ISR_TX_UNDERRUN)) { vr_reset(sc); vr_init_locked(sc); return; } if ((status & VR_ISR_UDFI) || (status & VR_ISR_TX_ABRT2) || (status & VR_ISR_TX_ABRT)) { ifp->if_oerrors++; if (sc->vr_cdata.vr_tx_cons->vr_mbuf != NULL) { VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON); VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO); } } } } #endif /* DEVICE_POLLING */ static void vr_intr(void *arg) { struct vr_softc *sc = arg; struct ifnet *ifp = sc->vr_ifp; uint16_t status; VR_LOCK(sc); if (sc->suspended) { /* * Forcibly disable interrupts. * XXX: Mobile VIA based platforms may need * interrupt re-enable on resume. */ CSR_WRITE_2(sc, VR_IMR, 0x0000); goto done_locked; } #ifdef DEVICE_POLLING if (ifp->if_capenable & IFCAP_POLLING) goto done_locked; #endif /* Suppress unwanted interrupts. */ if (!(ifp->if_flags & IFF_UP)) { vr_stop(sc); goto done_locked; } /* Disable interrupts. */ CSR_WRITE_2(sc, VR_IMR, 0x0000); for (;;) { status = CSR_READ_2(sc, VR_ISR); if (status) CSR_WRITE_2(sc, VR_ISR, status); if ((status & VR_INTRS) == 0) break; if (status & VR_ISR_RX_OK) vr_rxeof(sc); if (status & VR_ISR_RX_DROPPED) { if_printf(ifp, "rx packet lost\n"); ifp->if_ierrors++; } if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW)) { if_printf(ifp, "receive error (%04x)", status); if (status & VR_ISR_RX_NOBUF) printf(" no buffers"); if (status & VR_ISR_RX_OFLOW) printf(" overflow"); if (status & VR_ISR_RX_DROPPED) printf(" packet lost"); printf("\n"); vr_rxeoc(sc); } if ((status & VR_ISR_BUSERR) || (status & VR_ISR_TX_UNDERRUN)) { vr_reset(sc); vr_init_locked(sc); break; } if ((status & VR_ISR_TX_OK) || (status & VR_ISR_TX_ABRT) || (status & VR_ISR_TX_ABRT2) || (status & VR_ISR_UDFI)) { vr_txeof(sc); if ((status & VR_ISR_UDFI) || (status & VR_ISR_TX_ABRT2) || (status & VR_ISR_TX_ABRT)) { ifp->if_oerrors++; if (sc->vr_cdata.vr_tx_cons->vr_mbuf != NULL) { VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON); VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO); } } } } /* Re-enable interrupts. */ CSR_WRITE_2(sc, VR_IMR, VR_INTRS); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) vr_start_locked(ifp); done_locked: VR_UNLOCK(sc); } /* * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data * pointers to the fragment pointers. */ static int vr_encap(struct vr_softc *sc, struct vr_chain *c, struct mbuf *m_head) { struct vr_desc *f = NULL; struct mbuf *m; VR_LOCK_ASSERT(sc); /* * The VIA Rhine wants packet buffers to be longword * aligned, but very often our mbufs aren't. Rather than * waste time trying to decide when to copy and when not * to copy, just do it all the time. */ m = m_defrag(m_head, M_DONTWAIT); if (m == NULL) return (1); /* * The Rhine chip doesn't auto-pad, so we have to make * sure to pad short frames out to the minimum frame length * ourselves. */ if (m->m_len < VR_MIN_FRAMELEN) { m->m_pkthdr.len += VR_MIN_FRAMELEN - m->m_len; m->m_len = m->m_pkthdr.len; } c->vr_mbuf = m; f = c->vr_ptr; f->vr_data = vtophys(mtod(m, caddr_t)); f->vr_ctl = m->m_len; f->vr_ctl |= VR_TXCTL_TLINK|VR_TXCTL_FIRSTFRAG; f->vr_status = 0; f->vr_ctl |= VR_TXCTL_LASTFRAG|VR_TXCTL_FINT; f->vr_next = vtophys(c->vr_nextdesc->vr_ptr); return (0); } /* * Main transmit routine. To avoid having to do mbuf copies, we put pointers * to the mbuf data regions directly in the transmit lists. We also save a * copy of the pointers since the transmit list fragment pointers are * physical addresses. */ static void vr_start(struct ifnet *ifp) { struct vr_softc *sc = ifp->if_softc; VR_LOCK(sc); vr_start_locked(ifp); VR_UNLOCK(sc); } static void vr_start_locked(struct ifnet *ifp) { struct vr_softc *sc = ifp->if_softc; struct mbuf *m_head; struct vr_chain *cur_tx; if (ifp->if_drv_flags & IFF_DRV_OACTIVE) return; cur_tx = sc->vr_cdata.vr_tx_prod; while (cur_tx->vr_mbuf == NULL) { IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); if (m_head == NULL) break; /* Pack the data into the descriptor. */ if (vr_encap(sc, cur_tx, m_head)) { /* Rollback, send what we were able to encap. */ IFQ_DRV_PREPEND(&ifp->if_snd, m_head); break; } VR_TXOWN(cur_tx) = VR_TXSTAT_OWN; /* * If there's a BPF listener, bounce a copy of this frame * to him. */ BPF_MTAP(ifp, cur_tx->vr_mbuf); cur_tx = cur_tx->vr_nextdesc; } if (cur_tx != sc->vr_cdata.vr_tx_prod || cur_tx->vr_mbuf != NULL) { sc->vr_cdata.vr_tx_prod = cur_tx; /* Tell the chip to start transmitting. */ VR_SETBIT16(sc, VR_COMMAND, /*VR_CMD_TX_ON|*/ VR_CMD_TX_GO); /* Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; if (cur_tx->vr_mbuf != NULL) ifp->if_drv_flags |= IFF_DRV_OACTIVE; } } static void vr_init(void *xsc) { struct vr_softc *sc = xsc; VR_LOCK(sc); vr_init_locked(sc); VR_UNLOCK(sc); } static void vr_init_locked(struct vr_softc *sc) { struct ifnet *ifp = sc->vr_ifp; struct mii_data *mii; int i; VR_LOCK_ASSERT(sc); mii = device_get_softc(sc->vr_miibus); /* Cancel pending I/O and free all RX/TX buffers. */ vr_stop(sc); vr_reset(sc); /* Set our station address. */ for (i = 0; i < ETHER_ADDR_LEN; i++) CSR_WRITE_1(sc, VR_PAR0 + i, IFP2ENADDR(sc->vr_ifp)[i]); /* Set DMA size. */ VR_CLRBIT(sc, VR_BCR0, VR_BCR0_DMA_LENGTH); VR_SETBIT(sc, VR_BCR0, VR_BCR0_DMA_STORENFWD); /* * BCR0 and BCR1 can override the RXCFG and TXCFG registers, * so we must set both. */ VR_CLRBIT(sc, VR_BCR0, VR_BCR0_RX_THRESH); VR_SETBIT(sc, VR_BCR0, VR_BCR0_RXTHRESH128BYTES); VR_CLRBIT(sc, VR_BCR1, VR_BCR1_TX_THRESH); VR_SETBIT(sc, VR_BCR1, VR_BCR1_TXTHRESHSTORENFWD); VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH); VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_128BYTES); VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH); VR_SETBIT(sc, VR_TXCFG, VR_TXTHRESH_STORENFWD); /* Init circular RX list. */ if (vr_list_rx_init(sc) == ENOBUFS) { if_printf(ifp, "initialization failed: no memory for rx buffers\n"); vr_stop(sc); return; } /* Init tx descriptors. */ vr_list_tx_init(sc); /* If we want promiscuous mode, set the allframes bit. */ if (ifp->if_flags & IFF_PROMISC) VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC); else VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC); /* Set capture broadcast bit to capture broadcast frames. */ if (ifp->if_flags & IFF_BROADCAST) VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD); else VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD); /* * Program the multicast filter, if necessary. */ vr_setmulti(sc); /* * Load the address of the RX list. */ CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr)); /* Enable receiver and transmitter. */ CSR_WRITE_2(sc, VR_COMMAND, VR_CMD_TX_NOPOLL|VR_CMD_START| VR_CMD_TX_ON|VR_CMD_RX_ON| VR_CMD_RX_GO); CSR_WRITE_4(sc, VR_TXADDR, vtophys(&sc->vr_ldata->vr_tx_list[0])); CSR_WRITE_2(sc, VR_ISR, 0xFFFF); #ifdef DEVICE_POLLING /* * Disable interrupts if we are polling. */ if (ifp->if_capenable & IFCAP_POLLING) CSR_WRITE_2(sc, VR_IMR, 0); else #endif /* * Enable interrupts. */ CSR_WRITE_2(sc, VR_IMR, VR_INTRS); mii_mediachg(mii); ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc); } /* * Set media options. */ static int vr_ifmedia_upd(struct ifnet *ifp) { struct vr_softc *sc = ifp->if_softc; if (ifp->if_flags & IFF_UP) vr_init(sc); return (0); } /* * Report current media status. */ static void vr_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct vr_softc *sc = ifp->if_softc; struct mii_data *mii; mii = device_get_softc(sc->vr_miibus); VR_LOCK(sc); mii_pollstat(mii); VR_UNLOCK(sc); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; } static int vr_ioctl(struct ifnet *ifp, u_long command, caddr_t data) { struct vr_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; struct mii_data *mii; int error = 0; switch (command) { case SIOCSIFFLAGS: VR_LOCK(sc); if (ifp->if_flags & IFF_UP) { vr_init_locked(sc); } else { if (ifp->if_drv_flags & IFF_DRV_RUNNING) vr_stop(sc); } VR_UNLOCK(sc); error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: VR_LOCK(sc); vr_setmulti(sc); VR_UNLOCK(sc); error = 0; break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: mii = device_get_softc(sc->vr_miibus); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); break; case SIOCSIFCAP: #ifdef DEVICE_POLLING if (ifr->ifr_reqcap & IFCAP_POLLING && !(ifp->if_capenable & IFCAP_POLLING)) { error = ether_poll_register(vr_poll, ifp); if (error) return(error); VR_LOCK(sc); /* Disable interrupts */ CSR_WRITE_2(sc, VR_IMR, 0x0000); ifp->if_capenable |= IFCAP_POLLING; VR_UNLOCK(sc); return (error); } if (!(ifr->ifr_reqcap & IFCAP_POLLING) && ifp->if_capenable & IFCAP_POLLING) { error = ether_poll_deregister(ifp); /* Enable interrupts. */ VR_LOCK(sc); CSR_WRITE_2(sc, VR_IMR, VR_INTRS); ifp->if_capenable &= ~IFCAP_POLLING; VR_UNLOCK(sc); return (error); } #endif /* DEVICE_POLLING */ break; default: error = ether_ioctl(ifp, command, data); break; } return (error); } static void vr_watchdog(struct ifnet *ifp) { struct vr_softc *sc = ifp->if_softc; VR_LOCK(sc); ifp->if_oerrors++; if_printf(ifp, "watchdog timeout\n"); vr_stop(sc); vr_reset(sc); vr_init_locked(sc); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) vr_start_locked(ifp); VR_UNLOCK(sc); } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ static void vr_stop(struct vr_softc *sc) { register int i; struct ifnet *ifp; VR_LOCK_ASSERT(sc); ifp = sc->vr_ifp; ifp->if_timer = 0; callout_stop(&sc->vr_stat_callout); ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP); VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON)); CSR_WRITE_2(sc, VR_IMR, 0x0000); CSR_WRITE_4(sc, VR_TXADDR, 0x00000000); CSR_WRITE_4(sc, VR_RXADDR, 0x00000000); /* * Free data in the RX lists. */ for (i = 0; i < VR_RX_LIST_CNT; i++) { if (sc->vr_cdata.vr_rx_chain[i].vr_mbuf != NULL) { m_freem(sc->vr_cdata.vr_rx_chain[i].vr_mbuf); sc->vr_cdata.vr_rx_chain[i].vr_mbuf = NULL; } } bzero((char *)&sc->vr_ldata->vr_rx_list, sizeof(sc->vr_ldata->vr_rx_list)); /* * Free the TX list buffers. */ for (i = 0; i < VR_TX_LIST_CNT; i++) { if (sc->vr_cdata.vr_tx_chain[i].vr_mbuf != NULL) { m_freem(sc->vr_cdata.vr_tx_chain[i].vr_mbuf); sc->vr_cdata.vr_tx_chain[i].vr_mbuf = NULL; } } bzero((char *)&sc->vr_ldata->vr_tx_list, sizeof(sc->vr_ldata->vr_tx_list)); } /* * Stop all chip I/O so that the kernel's probe routines don't * get confused by errant DMAs when rebooting. */ static void vr_shutdown(device_t dev) { vr_detach(dev); }