/*- * Copyright (c) 1997 Semen Ustimenko (semen@iclub.nsu.ru) * 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. * * 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. * * version: stable-166 * */ /* * EtherPower II 10/100 Fast Ethernet (tx0) * (aka SMC9432TX based on SMC83c170 EPIC chip) * * Written by Semen Ustimenko. * * TODO: * Fix TX_FRAG_LIST option * Rewrite autonegotiation to remove DELAY(300000) * * stable-140: * first stable version * * stable-160: * added BPF support * fixed several bugs * * stable-161: * fixed BPF support * fixed several bugs * * stable-162: * fixed IFF_PROMISC mode support * added speed info displayed at startup (MII info) * * stable-163: * added media control code * * stable-164: * fixed some bugs * * stable-165: * fixed media control code * * stable-166: * fixed RX_TO_MBUF option and set as default * fixed bug caused ``tx0: device timeout 1 packets'' in 100Mbps mode * implemented fragment list transmit method (TX_FRAG_LIST) (BUGGY) * applyed patch to autoneg fullduplex modes ( Thank to Steve Bauer ) * added more coments, removed some debug printfs */ #include "pci.h" #if NPCI > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "bpfilter.h" #if NBPFILTER > 0 #include #endif /* * Global variables */ static u_long epic_pci_count; static epic_softc_t * epics[EPIC_MAX_DEVICES]; static struct pci_device txdevice = { "tx", epic_pci_probe, epic_pci_attach, &epic_pci_count, NULL }; /* * Append this driver to pci drivers list */ DATA_SET ( pcidevice_set, txdevice ); /* * ifioctl function * * splimp() invoked here */ static int epic_ifioctl(register struct ifnet * ifp, int command, caddr_t data){ epic_softc_t *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int x, error = 0; x = splimp(); switch (command) { case SIOCSIFADDR: case SIOCGIFADDR: ether_ioctl(ifp, command, data); break; case SIOCSIFFLAGS: /* * If the interface is marked up and stopped, then start it. * If it is marked down and running, then stop it. */ if (ifp->if_flags & IFF_UP) { if ((ifp->if_flags & IFF_RUNNING) == 0) { epic_init(sc); break; } } else { if (ifp->if_flags & IFF_RUNNING) { epic_stop(sc); ifp->if_flags &= ~IFF_RUNNING; break; } } /* Handle IFF_PROMISC flag */ epic_set_rx_mode(sc); break; case SIOCADDMULTI: case SIOCDELMULTI: /* Update out multicast list */ #if defined(__FreeBSD__) && __FreeBSD__ >= 3 epic_set_mc_table(sc); error = 0; #else error = (command == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->epic_ac) : ether_delmulti(ifr, &sc->epic_ac); if (error == ENETRESET) { epic_set_mc_table(sc); error = 0; } #endif break; case SIOCSIFMTU: /* * Set the interface MTU. */ if (ifr->ifr_mtu > ETHERMTU) { error = EINVAL; } else { ifp->if_mtu = ifr->ifr_mtu; } break; default: error = EINVAL; } splx(x); return error; } /* * ifstart function * * splimp() assumed to be done */ static void epic_ifstart(struct ifnet * const ifp){ epic_softc_t *sc = ifp->if_softc; while( sc->pending_txs < TX_RING_SIZE ){ int entry = sc->cur_tx % TX_RING_SIZE; struct epic_tx_buffer * buf = sc->tx_buffer + entry; struct mbuf *m,*m0; int len; /* If descriptor is busy, set IFF_OACTIVE and exit */ if( buf->desc.status & 0x8000 ) break; /* Get next packet to send */ IF_DEQUEUE( &(sc->epic_if.if_snd), m ); /* If no more mbuf's to send, return */ if( NULL == m ) return; /* Save mbuf header */ m0 = m; #if defined(TX_FRAG_LIST) if( buf->mbuf ) m_freem( buf->mbuf ); buf->mbuf = m; buf->flist.numfrags = 0; for(len=0;(m0!=0)&&(buf->flist.numfrags<63);m0=m0->m_next) { buf->flist.frag[buf->flist.numfrags].fraglen = m0->m_len; buf->flist.frag[buf->flist.numfrags].fragaddr = vtophys( mtod(m0, caddr_t) ); len += m0->m_len; buf->flist.numfrags++; } /* Does not generate TXC unless ring is full more then a half */ buf->desc.control = (sc->pending_txs>TX_RING_SIZE/2)?0x05:0x01; #else for (len = 0; m0 != 0; m0 = m0->m_next) { bcopy(mtod(m0, caddr_t), buf->data + len, m0->m_len); len += m0->m_len; } /* Does not generate TXC unless ring is full more then a half */ buf->desc.control = (sc->pending_txs>TX_RING_SIZE/2)?0x14:0x10; #endif /* Packet should be at least ETHER_MIN_LEN */ buf->desc.txlength = max(len,ETHER_MIN_LEN-ETHER_CRC_LEN); /* Pass ownership to the chip */ buf->desc.status = 0x8000; /* Set watchdog timer */ ifp->if_timer = 2; #if NBPFILTER > 0 if( ifp->if_bpf ) bpf_mtap( ifp, m ); #endif #if !defined(TX_FRAG_LIST) /* We don't need mbuf anyway */ m_freem( m ); #endif /* Trigger an immediate transmit demand. */ outl( sc->iobase + COMMAND, COMMAND_TXQUEUED ); /* Packet queued successful */ sc->pending_txs++; /* Switch to next descriptor */ sc->cur_tx = ( sc->cur_tx + 1 ) % TX_RING_SIZE; } sc->epic_if.if_flags |= IFF_OACTIVE; return; } /* * IFWATCHDOG function * * splimp() invoked here */ static void epic_ifwatchdog( struct ifnet *ifp) { epic_softc_t *sc = ifp->if_softc; int x; int i; x = splimp(); printf("tx%d: device timeout %d packets\n", sc->unit,sc->pending_txs); ifp->if_oerrors+=sc->pending_txs; epic_stop(sc); epic_init(sc); epic_ifstart(&sc->epic_if); splx(x); } /* * Interrupt function * * splimp() assumed to be done */ static void epic_intr_normal( void *arg) { epic_softc_t * sc = (epic_softc_t *) arg; int iobase = sc->iobase; int status; status = inl(iobase + INTSTAT); if( status & (INTSTAT_RQE|INTSTAT_HCC|INTSTAT_RCC) ) { epic_rx_done( sc ); outl( iobase + INTSTAT, status & (INTSTAT_RQE|INTSTAT_HCC|INTSTAT_RCC) ); } if( status & (INTSTAT_TXC|INTSTAT_TCC) ) { epic_tx_done( sc ); outl( iobase + INTSTAT, status & (INTSTAT_TXC|INTSTAT_TCC) ); } if( (status & INTSTAT_TQE) && !(sc->epic_if.if_flags & IFF_OACTIVE) ) { epic_ifstart( &sc->epic_if ); outl( iobase + INTSTAT, INTSTAT_TQE ); } #if 0 if( status & INTSTAT_GP2 ){ printf("tx%d: GP2 int occured\n",sc->unit); epic_read_phy_register(sc->iobase,DP83840_BMSR); epic_read_phy_register(sc->iobase,DP83840_BMCR); outl( iobase + INTSTAT, INTSTAT_GP2 ); } #endif if( status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA|INTSTAT_APE|INTSTAT_DPE) ){ int j; struct epic_tx_buffer * buf; printf("tx%d: PCI fatal error occured (%s%s%s%s)\n", sc->unit, (status&INTSTAT_PMA)?"PMA":"", (status&INTSTAT_PTA)?" PTA":"", (status&INTSTAT_APE)?" APE":"", (status&INTSTAT_DPE)?" DPE":""); #if defined(EPIC_DEBUG) printf("tx%d: dumping descriptors\n",sc->unit); for(j=0;jtx_buffer + j; printf("desc%d: %d %04x, %08x, %04x %d, %08x\n", j, buf->desc.txlength,buf->desc.status, buf->desc.bufaddr, buf->desc.control,buf->desc.buflength, buf->desc.next ); } #endif epic_stop(sc); epic_init(sc); return; } /* UPDATE statistics */ if (status & (INTSTAT_CNT | INTSTAT_TXU | INTSTAT_OVW | INTSTAT_RXE)) { /* update dot3 Rx statistics */ sc->dot3stats.dot3StatsMissedFrames += inb(iobase + MPCNT); sc->dot3stats.dot3StatsFrameTooLongs += inb(iobase + ALICNT); sc->dot3stats.dot3StatsFCSErrors += inb(iobase + CRCCNT); /* Update if Rx statistics */ if (status & (INTSTAT_OVW | INTSTAT_RXE)) sc->epic_if.if_ierrors++; /* Tx FIFO underflow. */ if (status & INTSTAT_TXU) { /* Inc. counters */ sc->dot3stats.dot3StatsInternalMacTransmitErrors++; sc->epic_if.if_oerrors++; /* Restart the transmit process. */ outl(iobase + COMMAND, COMMAND_TXUGO); } /* Clear all error sources. */ outl(iobase + INTSTAT, status&(INTSTAT_CNT|INTSTAT_TXU|INTSTAT_OVW|INTSTAT_RXE)); } /* If no packets are pending, thus no timeouts */ if( sc->pending_txs == 0 ) sc->epic_if.if_timer = 0; return; } /* * * splimp() invoked before epic_intr_normal() */ void epic_rx_done( epic_softc_t *sc ) { int i = 0; u_int16_t len; struct epic_rx_buffer * buf; struct mbuf *m; #if defined(RX_TO_MBUF) struct mbuf *m0; #endif struct ether_header *eh; int stt; while( !(sc->rx_buffer[sc->cur_rx].desc.status & 0x8000) && \ i++ < RX_RING_SIZE ){ buf = sc->rx_buffer + sc->cur_rx; stt = buf->desc.status; /* Check for errors */ if( !(buf->desc.status&1) ) { sc->epic_if.if_ierrors++; goto rxerror; } /* This is received frame actual length */ len = buf->desc.rxlength - ETHER_CRC_LEN; #if !defined(RX_TO_MBUF) /* Allocate mbuf to pass to OS */ MGETHDR(m, M_DONTWAIT, MT_DATA); if( NULL == m ){ printf("tx%d: cannot allocate mbuf header\n",sc->unit); sc->epic_if.if_ierrors++; goto rxerror; } if( len > MHLEN ){ MCLGET(m,M_DONTWAIT); if( NULL == (m->m_flags & M_EXT) ){ printf("tx%d: cannot allocate mbuf cluster\n", sc->unit); m_freem( m ); sc->epic_if.if_ierrors++; goto rxerror; } } /* Copy packet to new allocated mbuf */ memcpy( mtod(m,void*), buf->data, len ); #else /* RX_TO_MBUF */ /* Try to allocate mbuf cluster */ MGETHDR(m0,M_DONTWAIT,MT_DATA); if( NULL == m0 ) { printf("tx%d: cannot allocate mbuf header/n",sc->unit); sc->epic_if.if_ierrors++; goto rxerror; } MCLGET(m0,M_DONTWAIT); if( NULL == (m0->m_flags & M_EXT) ){ printf("tx%d: cannot allocate mbuf cluster/n",sc->unit); m_freem(m0); sc->epic_if.if_ierrors++; goto rxerror; } /* Swap new allocated mbuf with mbuf, containing packet */ m = buf->mbuf; buf->mbuf = m0; /* Insert new allocated mbuf into device queue */ buf->data = mtod( buf->mbuf, caddr_t ); buf->desc.bufaddr = vtophys( buf->data ); #endif /* First mbuf in packet holds the ethernet and packet headers */ eh = mtod( m, struct ether_header * ); m->m_pkthdr.rcvif = &(sc->epic_if); m->m_pkthdr.len = len; m->m_len = len; #if NBPFILTER > 0 /* Give mbuf to BPFILTER */ if( sc->epic_if.if_bpf ) bpf_mtap( &sc->epic_if, m ); /* Accept only our packets, broadcasts and multicasts */ if( (eh->ether_dhost[0] & 1) == 0 && bcmp(eh->ether_dhost,sc->epic_ac.ac_enaddr,ETHER_ADDR_LEN)){ m_freem(m); goto rxerror; } #endif /* Second mbuf holds packet ifself */ m->m_pkthdr.len = len - sizeof(struct ether_header); m->m_len = len - sizeof( struct ether_header ); m->m_data += sizeof( struct ether_header ); /* Give mbuf to OS */ ether_input(&sc->epic_if, eh, m); /* Successfuly received frame */ sc->epic_if.if_ipackets++; rxerror: /* Mark current descriptor as free */ buf->desc.rxlength = 0; buf->desc.status = 0x8000; /* Switch to next descriptor */ sc->cur_rx = (sc->cur_rx+1) % RX_RING_SIZE; } return; } /* * * splimp() invoked before epic_intr_normal() */ void epic_tx_done( epic_softc_t *sc ){ int i = 0; u_int32_t if_flags=~0; int coll; u_int16_t stt; while( i++ < TX_RING_SIZE ){ struct epic_tx_buffer *buf = sc->tx_buffer + sc->dirty_tx; u_int16_t len = buf->desc.txlength; stt = buf->desc.status; if( stt & 0x8000 ) break; /* following packets are not Txed yet */ if( stt == 0 ){ if_flags = ~IFF_OACTIVE; break; } sc->pending_txs--; /* packet is finished */ sc->dirty_tx = (sc->dirty_tx + 1) % TX_RING_SIZE; coll = (stt >> 8) & 0xF; /* number of collisions*/ if( stt & 0x0001 ){ sc->epic_if.if_opackets++; } else { if(stt & 0x0008) sc->dot3stats.dot3StatsCarrierSenseErrors++; if(stt & 0x1050) sc->dot3stats.dot3StatsInternalMacTransmitErrors++; if(stt & 0x1000) coll = 16; sc->epic_if.if_oerrors++; } if(stt & 0x0002) /* What does it mean? */ sc->dot3stats.dot3StatsDeferredTransmissions++; sc->epic_if.if_collisions += coll; switch( coll ){ case 0: break; case 16: sc->dot3stats.dot3StatsExcessiveCollisions++; sc->dot3stats.dot3StatsCollFrequencies[15]++; break; case 1: sc->dot3stats.dot3StatsSingleCollisionFrames++; sc->dot3stats.dot3StatsCollFrequencies[0]++; break; default: sc->dot3stats.dot3StatsMultipleCollisionFrames++; sc->dot3stats.dot3StatsCollFrequencies[coll-1]++; break; } buf->desc.status = 0; buf->desc.txlength = 0; #if defined(TX_FRAG_LIST) buf->flist.numfrags = 0; m_freem( buf->mbuf ); buf->mbuf = NULL; #endif if_flags = ~IFF_OACTIVE; } sc->epic_if.if_flags &= if_flags; if( !(sc->epic_if.if_flags & IFF_OACTIVE) ) epic_ifstart( &sc->epic_if ); } /* * Probe function */ static char* epic_pci_probe( pcici_t config_id, pcidi_t device_id) { if( PCI_VENDORID(device_id) != SMC_VENDORID ) return NULL; if( PCI_CHIPID(device_id) == CHIPID_83C170 ) return "SMC 83c170"; return NULL; } /* * PCI_Attach function * * splimp() invoked here */ static void epic_pci_attach( pcici_t config_id, int unit) { struct ifnet * ifp; epic_softc_t *sc; u_int32_t iobase; u_int32_t irq; u_int32_t phyid; int i,s; int phy, phy_idx; /* * Get iobase and irq level */ irq = PCI_CONF_READ(PCI_CFIT) & (0xFF); if (!pci_map_port(config_id, PCI_CBIO,(u_short *) &iobase)) return; /* * Allocate and preinitialize softc structure */ sc = (epic_softc_t *) malloc(sizeof(epic_softc_t), M_DEVBUF, M_NOWAIT); if (sc == NULL) return; epics[ unit ] = sc; /* * Zero softc structure */ bzero(sc, sizeof(epic_softc_t)); /* * Initialize softc */ sc->unit = unit; sc->iobase = iobase; sc->irq = irq; /* Bring the chip out of low-power mode. */ outl( iobase + GENCTL, 0x0000 ); /* Magic?! If we don't set this bit the MII interface won't work. */ outl( iobase + TEST1, 0x0008 ); /* Read mac address (may be better is read from EEPROM?) */ for (i = 0; i < ETHER_ADDR_LEN / sizeof( u_int16_t); i++) ((u_int16_t *)sc->epic_macaddr)[i] = inw(iobase + LAN0 + i*4); /* Display some info */ printf("tx%d: address %02x:%02x:%02x:%02x:%02x:%02x,",sc->unit, sc->epic_macaddr[0],sc->epic_macaddr[1],sc->epic_macaddr[2], sc->epic_macaddr[3],sc->epic_macaddr[4],sc->epic_macaddr[5]); s = splimp(); /* Map interrupt */ if( !pci_map_int(config_id, epic_intr_normal, (void*)sc, &net_imask) ) { printf("tx%d: couldn't map interrupt\n",unit); epics[ unit ] = NULL; free(sc, M_DEVBUF); return; } /* Fill ifnet structure */ ifp = &sc->epic_if; ifp->if_unit = unit; ifp->if_name = "tx"; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI; ifp->if_ioctl = epic_ifioctl; ifp->if_start = epic_ifstart; ifp->if_watchdog = epic_ifwatchdog; ifp->if_init = (if_init_f_t*)epic_init; ifp->if_timer = 0; ifp->if_output = ether_output; ifp->if_linkmib = &sc->dot3stats; ifp->if_linkmiblen = sizeof(struct ifmib_iso_8802_3); sc->dot3stats.dot3StatsEtherChipSet = DOT3CHIPSET(dot3VendorSMC, dot3ChipSetSMC83c170); sc->dot3stats.dot3Compliance = DOT3COMPLIANCE_COLLS; printf(" type SMC9432TX"); i = epic_read_phy_register(iobase, DP83840_BMCR); if( i & BMCR_AUTONEGOTIATION ){ printf(" [Auto-Neg."); if( i & BMCR_100MBPS ) printf(" 100Mbps"); else printf(" 10Mbps"); if( i & BMCR_FULL_DUPLEX ) printf(" FD"); printf("]\n"); if( i & BMCR_FULL_DUPLEX ) printf("tx%d: WARNING! FD autonegotiated, not supported\n",sc->unit); } else { ifp->if_flags |= IFF_LINK0; if( i & BMCR_100MBPS ) { printf(" [100Mbps"); ifp->if_flags |= IFF_LINK2; } else printf(" [10Mbps"); if( i & BMCR_FULL_DUPLEX ) { printf(" FD"); ifp->if_flags |= IFF_LINK1; } printf("]\n"); } #if defined(EPIC_DEBUG) printf("tx%d: PHY id: (",sc->unit); i=epic_read_phy_register(iobase,DP83840_PHYIDR1); printf("%04x:",i); phyid=i<<6; i=epic_read_phy_register(iobase,DP83840_PHYIDR2); printf("%04x)",i); phyid|=((i>>10)&0x3F); printf(" %08x, rev %x, mod %x\n",phyid,(i)&0xF, (i>>4)&0x3f); #endif epic_read_phy_register(iobase,DP83840_BMSR); epic_read_phy_register(iobase,DP83840_BMSR); epic_read_phy_register(iobase,DP83840_BMSR); i=epic_read_phy_register(iobase,DP83840_BMSR); if( !(i & BMSR_LINK_STATUS) ) printf("tx%d: WARNING! no link estabilished\n",sc->unit); /* * Attach to if manager */ if_attach(ifp); ether_ifattach(ifp); #if NBPFILTER > 0 bpfattach(ifp,DLT_EN10MB, sizeof(struct ether_header)); #endif splx(s); return; } /* * IFINIT function * * splimp() invoked here */ static int epic_init( epic_softc_t * sc) { struct ifnet *ifp = &sc->epic_if; int iobase = sc->iobase; int i,s; s = splimp(); /* Soft reset the chip. */ outl(iobase + GENCTL, GENCTL_SOFT_RESET ); /* Reset takes 15 ticks */ for(i=0;i<0x100;i++); /* Wake up */ outl( iobase + GENCTL, 0 ); /* ?????? */ outl( iobase + TEST1, 0x0008); /* Initialize rings */ if( -1 == epic_init_rings( sc ) ) { printf("tx%d: failed to initialize rings\n",sc->unit); epic_free_rings( sc ); splx(s); return -1; } /* Put node address to EPIC */ outl( iobase + LAN0 + 0x0, ((u_int16_t *)sc->epic_macaddr)[0] ); outl( iobase + LAN0 + 0x4, ((u_int16_t *)sc->epic_macaddr)[1] ); outl( iobase + LAN0 + 0x8, ((u_int16_t *)sc->epic_macaddr)[2] ); /* Enable interrupts, set for PCI read multiple and etc */ outl( iobase + GENCTL, GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE | GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64 ); /* Set transmit threshold */ outl( iobase + ETXTHR, 0x40 ); /* Compute and set RXCON. */ epic_set_rx_mode( sc ); /* Set MII speed mode */ epic_set_media_speed( sc ); /* Set multicast table */ epic_set_mc_table( sc ); /* Enable interrupts by setting the interrupt mask. */ outl( iobase + INTMASK, INTSTAT_RCC | INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | INTSTAT_TXC | INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU | INTSTAT_CNT | /*INTSTAT_GP2 |*/ INTSTAT_FATAL | INTSTAT_PTA | INTSTAT_PMA | INTSTAT_APE | INTSTAT_DPE ); /* Start rx process */ outl( iobase + COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX ); /* Mark interface running ... */ if( ifp->if_flags & IFF_UP ) ifp->if_flags |= IFF_RUNNING; else ifp->if_flags &= ~IFF_RUNNING; /* ... and free */ ifp->if_flags &= ~IFF_OACTIVE; splx(s); return 0; } /* * This function should set EPIC's registers according IFF_* flags */ static void epic_set_rx_mode( epic_softc_t * sc) { struct ifnet *ifp = &sc->epic_if; u_int16_t rxcon = 0; #if NBPFILTER > 0 if( sc->epic_if.if_flags & IFF_PROMISC ) rxcon |= RXCON_PROMISCUOUS_MODE; #endif if( sc->epic_if.if_flags & IFF_BROADCAST ) rxcon |= RXCON_RECEIVE_BROADCAST_FRAMES; if( sc->epic_if.if_flags & IFF_MULTICAST ) rxcon |= RXCON_RECEIVE_MULTICAST_FRAMES; outl( sc->iobase + RXCON, rxcon ); return; } /* * This function should set MII to mode specified by IFF_LINK* flags */ static void epic_set_media_speed( epic_softc_t * sc) { struct ifnet *ifp = &sc->epic_if; u_int16_t media; u_int32_t i; /* Set media speed */ if( ifp->if_flags & IFF_LINK0 ){ /* Allow only manual fullduplex modes */ media = epic_read_phy_register( sc->iobase, DP83840_ANAR ); media |= ANAR_100|ANAR_10|ANAR_100_FD|ANAR_10_FD; epic_write_phy_register( sc->iobase, DP83840_ANAR, media ); /* Set mode */ media = (ifp->if_flags&IFF_LINK2)?BMCR_100MBPS:0; media |= (ifp->if_flags&IFF_LINK1)?BMCR_FULL_DUPLEX:0; epic_write_phy_register( sc->iobase, DP83840_BMCR, media ); ifp->if_baudrate = (ifp->if_flags&IFF_LINK2)?100000000:10000000; outl( sc->iobase + TXCON,(ifp->if_flags&IFF_LINK1)?TXCON_LOOPBACK_MODE_FULL_DUPLEX|TXCON_DEFAULT:TXCON_DEFAULT ); } else { /* If autoneg is set, IFF_LINK flags are meaningless */ ifp->if_flags &= ~(IFF_LINK0|IFF_LINK1|IFF_LINK2); ifp->if_baudrate = 100000000; outl( sc->iobase + TXCON, TXCON_DEFAULT ); /* Did it autoneg full duplex? */ if (epic_autoneg(sc) == EPIC_FULL_DUPLEX) outl( sc->iobase + TXCON, TXCON_LOOPBACK_MODE_FULL_DUPLEX|TXCON_DEFAULT); } return; } /* * This functions controls the autoneg processes of the phy * It implements the workaround that is described in section 7.2 & 7.3 of the * DP83840A data sheet * http://www.national.com/ds/DP/DP83840A.pdf */ static int epic_autoneg( epic_softc_t * sc) { struct ifnet *ifp = &sc->epic_if; u_int16_t media; u_int16_t i; media = epic_read_phy_register( sc->iobase, DP83840_ANAR ); media |= ANAR_100|ANAR_100_FD|ANAR_10|ANAR_10_FD; epic_write_phy_register( sc->iobase, DP83840_ANAR, media ); /* Set and restart autoneg */ epic_write_phy_register( sc->iobase, DP83840_BMCR, BMCR_AUTONEGOTIATION | BMCR_RESTART_AUTONEG ); /* Wait 3 seconds for the autoneg to finish * This is the recommended time from the DP83840A data sheet * Section 7.1 */ DELAY(3000000); epic_read_phy_register( sc->iobase, DP83840_BMSR); /* BMSR must be read twice to update the link status bit/ * since that bit is a latch bit */ i = epic_read_phy_register( sc->iobase, DP83840_BMSR); if ((i & BMSR_LINK_STATUS) && ( i & BMSR_AUTONEG_COMPLETE)){ i = epic_read_phy_register( sc->iobase, DP83840_PAR); if ( i & PAR_FULL_DUPLEX ) return EPIC_FULL_DUPLEX; else return EPIC_HALF_DUPLEX; } else { /*Auto-negotiation or link status is not 1 Thus the auto-negotiation failed and one must take other means to fix it. */ /* ANER must be read twice to get the correct reading for the * Multiple link fault bit -- it is a latched bit */ epic_read_phy_register (sc->iobase, DP83840_ANER); i = epic_read_phy_register (sc->iobase, DP83840_ANER); if ( i & ANER_MULTIPLE_LINK_FAULT ) { /* it can be forced to 100Mb/s Half-Duplex */ media = epic_read_phy_register(sc->iobase,DP83840_BMCR); media &= ~(BMCR_AUTONEGOTIATION | BMCR_FULL_DUPLEX); media |= BMCR_100MBPS; epic_write_phy_register(sc->iobase,DP83840_BMCR,media); /* read BMSR again to determine link status */ epic_read_phy_register(sc->iobase, DP83840_BMSR); i=epic_read_phy_register( sc->iobase, DP83840_BMSR); if (i & BMSR_LINK_STATUS){ /* port is linked to the non Auto-Negotiation * 100Mbs partner. */ return EPIC_HALF_DUPLEX; } else { media = epic_read_phy_register (sc->iobase, DP83840_BMCR); media &= !(BMCR_AUTONEGOTIATION | BMCR_FULL_DUPLEX | BMCR_100MBPS); epic_write_phy_register(sc->iobase, DP83840_BMCR, media); epic_read_phy_register(sc->iobase, DP83840_BMSR); i=epic_read_phy_register( sc->iobase, DP83840_BMSR); if (i & BMSR_LINK_STATUS) { /*port is linked to the non * Auto-Negotiation10Mbs partner */ return EPIC_HALF_DUPLEX; } } } /* If we get here we are most likely not connected * so lets default it to half duplex */ return EPIC_HALF_DUPLEX; } } /* * This function sets EPIC multicast table */ static void epic_set_mc_table( epic_softc_t * sc) { struct ifnet *ifp = &sc->epic_if; if( ifp->if_flags & IFF_MULTICAST ){ outl( sc->iobase + MC0, 0xFFFF ); outl( sc->iobase + MC1, 0xFFFF ); outl( sc->iobase + MC2, 0xFFFF ); outl( sc->iobase + MC3, 0xFFFF ); } return; } /* * This function should completely stop rx and tx processes * * splimp() invoked here */ static void epic_stop( epic_softc_t * sc) { int iobase = sc->iobase; int i,s; s = splimp(); sc->epic_if.if_timer = 0; /* Disable interrupts, stop processes */ outl( iobase + INTMASK, 0 ); outl( iobase + GENCTL, 0 ); outl( iobase + COMMAND, COMMAND_STOP_RX | COMMAND_STOP_RDMA | COMMAND_STOP_TDMA ); /* Wait RX and TX DMA to stop */ for(i=0;i<0x100000;i++){ if( (inl(iobase+INTSTAT)&(INTSTAT_RXIDLE|INTSTAT_TXIDLE)) == (INTSTAT_RXIDLE|INTSTAT_TXIDLE) ) break; } if( !(inl(iobase+INTSTAT)&INTSTAT_RXIDLE) ) printf("tx%d: can't stop RX DMA\n",sc->unit); if( !(inl(iobase+INTSTAT)&INTSTAT_TXIDLE) ) printf("tx%d: can't stop TX DMA\n",sc->unit); /* Reset chip */ outl( iobase + GENCTL, GENCTL_SOFT_RESET ); for(i=0;i<0x100;i++); /* Free memory allocated for rings */ epic_free_rings( sc ); splx(s); } /* * This function should free all allocated for rings memory. * NB: The DMA processes must be stopped. * * splimp() assumed to be done */ static void epic_free_rings(epic_softc_t * sc){ int i; for(i=0;irx_buffer + i; buf->desc.status = 0; buf->desc.buflength = 0; buf->desc.bufaddr = 0; buf->data = NULL; #if defined(RX_TO_MBUF) if( buf->mbuf ) m_freem( buf->mbuf ); buf->mbuf = NULL; #else if( buf->data ) free( buf->data, M_DEVBUF ); buf->data = NULL; #endif } for(i=0;itx_buffer + i; buf->desc.status = 0; buf->desc.buflength = 0; buf->desc.bufaddr = 0; #if defined(TX_FRAG_LIST) if( buf->mbuf ) m_freem( buf->mbuf ); buf->mbuf = NULL; #else if( buf->data ) free( buf->data, M_DEVBUF ); buf->data = NULL; #endif } } /* * Initialize Rx and Tx rings and give them to EPIC * * If RX_TO_MBUF option is enabled, mbuf cluster is allocated instead of * static buffer for RX ringi element. * If TX_FRAG_LIST option is enabled, nothig is done, except chaining * descriptors to ring and point them to static fraglists. * * splimp() assumed to be done */ static int epic_init_rings(epic_softc_t * sc){ int i; struct mbuf *m; sc->cur_rx = sc->cur_tx = sc->dirty_tx = sc->pending_txs = 0; for (i = 0; i < RX_RING_SIZE; i++) { struct epic_rx_buffer *buf = sc->rx_buffer + i; buf->desc.status = 0; /* Owned by driver */ buf->desc.next = vtophys(&(sc->rx_buffer[(i+1)%RX_RING_SIZE].desc) ); #if defined(RX_TO_MBUF) MGETHDR(buf->mbuf,M_DONTWAIT,MT_DATA); if( NULL == buf->mbuf ) return -1; MCLGET(buf->mbuf,M_DONTWAIT); if( NULL == (buf->mbuf->m_flags & M_EXT) ) return -1; buf->data = mtod( buf->mbuf, caddr_t ); #else buf->data = malloc(ETHER_MAX_FRAME_LEN, M_DEVBUF, M_NOWAIT); if( buf->data == NULL ) return -1; #endif buf->desc.bufaddr = vtophys( buf->data ); buf->desc.buflength = ETHER_MAX_FRAME_LEN; buf->desc.status = 0x8000; /* Give to EPIC */ } for (i = 0; i < TX_RING_SIZE; i++) { struct epic_tx_buffer *buf = sc->tx_buffer + i; buf->desc.status = 0; buf->desc.next = vtophys(&(sc->tx_buffer[(i+1)%TX_RING_SIZE].desc) ); #if defined(TX_FRAG_LIST) buf->mbuf = NULL; buf->desc.bufaddr = vtophys( &(buf->flist) ); #else /* Allocate buffer */ buf->data = malloc(ETHER_MAX_FRAME_LEN, M_DEVBUF, M_NOWAIT); if( buf->data == NULL ) return -1; buf->desc.bufaddr = vtophys( buf->data ); buf->desc.buflength = ETHER_MAX_FRAME_LEN; #endif } /* Give rings to EPIC */ outl( sc->iobase + PRCDAR, vtophys(&(sc->rx_buffer[0].desc)) ); outl( sc->iobase + PTCDAR, vtophys(&(sc->tx_buffer[0].desc)) ); return 0; } /* * EEPROM operation functions */ static void epic_write_eepromreg(u_int16_t regaddr, u_int8_t val){ u_int16_t i; outb( regaddr, val ); for( i=0;i<0xFF; i++) if( !(inb( regaddr ) & 0x20) ) break; return; } static u_int8_t epic_read_eepromreg(u_int16_t regaddr){ return inb( regaddr ); } static u_int8_t epic_eeprom_clock( u_int16_t ioaddr, u_int8_t val ){ epic_write_eepromreg( ioaddr + EECTL, val ); epic_write_eepromreg( ioaddr + EECTL, (val | 0x4) ); epic_write_eepromreg( ioaddr + EECTL, val ); return epic_read_eepromreg( ioaddr + EECTL ); } static void epic_output_eepromw(u_int16_t ioaddr, u_int16_t val){ int i; for( i = 0xF; i >= 0; i--){ if( (val & (1 << i)) ) epic_eeprom_clock( ioaddr, 0x0B ); else epic_eeprom_clock( ioaddr, 3); } } static u_int16_t epic_input_eepromw(u_int16_t ioaddr){ int i; int tmp; u_int16_t retval = 0; for( i = 0xF; i >= 0; i--) { tmp = epic_eeprom_clock( ioaddr, 0x3 ); if( tmp & 0x10 ){ retval |= (1 << i); } } return retval; } static int epic_read_eeprom(u_int16_t ioaddr, u_int16_t loc){ int i; u_int16_t dataval; u_int16_t read_cmd; epic_write_eepromreg(ioaddr + EECTL , 3); if( epic_read_eepromreg(ioaddr + EECTL) & 0x40 ) read_cmd = ( loc & 0x3F ) | 0x180; else read_cmd = ( loc & 0xFF ) | 0x600; epic_output_eepromw( ioaddr, read_cmd ); dataval = epic_input_eepromw( ioaddr ); epic_write_eepromreg( ioaddr + EECTL, 1 ); return dataval; } static int epic_read_phy_register(u_int16_t iobase, u_int16_t loc){ int i; outl( iobase + MIICTL, ((loc << 4) | 0x0601) ); for( i=0;i<0x1000;i++) if( !(inl( iobase + MIICTL )&1) ) break; return inl( iobase + MIIDATA ); } static void epic_write_phy_register(u_int16_t iobase, u_int16_t loc,u_int16_t val){ int i; outl( iobase + MIIDATA, val ); outl( iobase + MIICTL, ((loc << 4) | 0x0602) ); for( i=0;i<0x1000;i++) if( !(inl( iobase + MIICTL )&2) ) break; return; } #endif /* NPCI > 0 */