/* $OpenBSD: if_tx.c,v 1.3 1998/10/10 04:30:09 jason Exp $ */ /*- * 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. * * $Id: if_tx.c,v 1.3 1998/10/10 04:30:09 jason Exp $ * */ /* * EtherPower II 10/100 Fast Ethernet (tx0) * (aka SMC9432TX based on SMC83c170 EPIC chip) * * Thanks are going to Steve Bauer and Jason Wright. * * todo: * Deal with bus mastering, i.e. i realy don't know what to do with * it and how it can improve performance. * Implement FULL IFF_MULTICAST support. * Test, test and test again:-( * */ /* We should define compile time options before if_txvar.h included */ /*#define EPIC_NOIFMEDIA 1*/ /*#define EPIC_USEIOSPACE 1*/ #define EARLY_RX 1 /*#define EPIC_DEBUG 1*/ #if defined(EPIC_DEBUG) #define dprintf(a) printf a #else #define dprintf(a) #endif /* Macro to get either mbuf cluster or nothing */ #define EPIC_MGETCLUSTER(m) \ { MGETHDR((m),M_DONTWAIT,MT_DATA); \ if (m) { \ MCLGET((m),M_DONTWAIT); \ if( NULL == ((m)->m_flags & M_EXT) ){ \ m_freem(m); \ (m) = NULL; \ } \ } \ } #include "bpfilter.h" #include "pci.h" #if NPCI > 0 #include #include #include #include #include #include #include #include #include #include #if !defined(SIOCSIFMEDIA) || defined(EPIC_NOIFMEDIA) #define EPIC_NOIFMEDIA 1 #else #include #endif #ifdef INET #include #include #include #include #endif #ifdef IPX #include #include #endif #ifdef NS #include #include #endif #if NBPFILTER > 0 #include #include #endif #if defined(__OpenBSD__) #include #include #include #include #include #include #include #include #include #else /* __FreeBSD__ */ #include #include #include #include #include #include #include #include #endif #if defined(__FreeBSD__) #define EPIC_IFIOCTL_CMD_TYPE int #define EPIC_INTR_RET_TYPE void #else /* __OpenBSD__ */ #define EPIC_IFIOCTL_CMD_TYPE u_long #define EPIC_INTR_RET_TYPE int #endif static int epic_ifioctl __P((register struct ifnet *, EPIC_IFIOCTL_CMD_TYPE, caddr_t)); static EPIC_INTR_RET_TYPE epic_intr __P((void *)); static int epic_common_attach __P((epic_softc_t *)); static void epic_ifstart __P((struct ifnet *)); static void epic_ifwatchdog __P((struct ifnet *)); static int epic_init __P((epic_softc_t *)); static void epic_stop __P((epic_softc_t *)); static __inline void epic_rx_done __P((epic_softc_t *)); static __inline void epic_tx_done __P((epic_softc_t *)); static int epic_init_rings __P((epic_softc_t *)); static void epic_free_rings __P((epic_softc_t *)); static void epic_stop_activity __P((epic_softc_t *)); static void epic_start_activity __P((epic_softc_t *)); static void epic_set_rx_mode __P((epic_softc_t *)); static void epic_set_tx_mode __P((epic_softc_t *)); static void epic_set_mc_table __P((epic_softc_t *)); static void epic_set_media_speed __P((epic_softc_t *)); static void epic_init_phy __P((epic_softc_t *)); static void epic_dump_state __P((epic_softc_t *)); static int epic_autoneg __P((epic_softc_t *)); static int epic_read_eeprom __P((epic_softc_t *,u_int16_t)); static void epic_output_eepromw __P((epic_softc_t *, u_int16_t)); static u_int16_t epic_input_eepromw __P((epic_softc_t *)); static u_int8_t epic_eeprom_clock __P((epic_softc_t *,u_int8_t)); static void epic_write_eepromreg __P((epic_softc_t *,u_int8_t)); static u_int8_t epic_read_eepromreg __P((epic_softc_t *)); static u_int16_t epic_read_phy_register __P((epic_softc_t *, u_int16_t)); static void epic_write_phy_register __P((epic_softc_t *, u_int16_t, u_int16_t)); #if !defined(EPIC_NOIFMEDIA) static int epic_ifmedia_change __P((struct ifnet *)); static void epic_ifmedia_status __P((struct ifnet *, struct ifmediareq *)); #endif /* ------------------------------------------------------------------------- OS-specific part ------------------------------------------------------------------------- */ #if defined(__OpenBSD__) /* -----------------------------OpenBSD------------------------------------- */ static int epic_openbsd_probe __P((struct device *,void *,void *)); static void epic_openbsd_attach __P((struct device *, struct device *, void *)); static void epic_shutdown __P((void *)); struct cfattach tx_ca = { sizeof(epic_softc_t), epic_openbsd_probe, epic_openbsd_attach }; struct cfdriver tx_cd = { NULL,"tx",DV_IFNET }; /* Synopsis: Check if device id corresponds with SMC83C170 id. */ static int epic_openbsd_probe( struct device *parent, void *match, void *aux ) { struct pci_attach_args *pa = aux; if( PCI_VENDOR(pa->pa_id) != SMC_VENDORID ) return 0; if( PCI_PRODUCT(pa->pa_id) == CHIPID_83C170 ) return 1; return 0; } static void epic_openbsd_attach( struct device *parent, struct device *self, void *aux ) { epic_softc_t *sc = (epic_softc_t*)self; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr = NULL; struct ifnet *ifp; bus_space_tag_t iot = pa->pa_iot; bus_addr_t iobase; bus_size_t iosize; int i; #if !defined(EPIC_NOIFMEDIA) int tmp; #endif if( pci_io_find(pc, pa->pa_tag, PCI_CBIO, &iobase, &iosize)) { printf(": can't find i/o space\n"); return; } if( bus_space_map(iot, iobase, iosize, 0, &sc->sc_sh)) { printf(": can't map i/o space\n"); return; } sc->sc_st = iot; ifp = &sc->sc_if; bcopy(sc->sc_dev.dv_xname, ifp->if_xname,IFNAMSIZ); ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = epic_ifioctl; ifp->if_start = epic_ifstart; ifp->if_watchdog = epic_ifwatchdog; /* Do common attach procedure */ if( epic_common_attach(sc) ) return; /* Map interrupt */ if( pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, pa->pa_intrline, &ih)) { printf(": can't map interrupt\n"); return; } intrstr = pci_intr_string(pc, ih); sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, epic_intr, sc, self->dv_xname); if( NULL == sc->sc_ih ) { printf(": can't establish interrupt"); if( intrstr )printf(" at %s",intrstr); printf("\n"); return; } printf(": %s",intrstr); /* Display some info */ printf(" address %s",ether_sprintf(sc->sc_macaddr)); /* Read current media config and display it too */ i = PHY_READ_2( sc, DP83840_BMCR ); #if !defined(EPIC_NOIFMEDIA) tmp = IFM_ETHER; #endif if( i & BMCR_AUTONEGOTIATION ){ printf(", Auto-Neg "); /* To avoid bug in QS6612 read LPAR enstead of BMSR */ i = PHY_READ_2( sc, DP83840_LPAR ); if( i & (ANAR_100_TX|ANAR_100_TX_FD) ) printf("100Mbps"); else printf("10Mbps"); if( i & (ANAR_10_FD|ANAR_100_TX_FD) ) printf(" FD"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_AUTO; #endif } else { #if defined(EPIC_NOIFMEDIA) ifp->if_flags |= IFF_LINK0; #endif if( i & BMCR_100MBPS ) { printf(", 100Mbps"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_100_TX; #else ifp->if_flags |= IFF_LINK2; #endif } else { printf(", 10Mbps"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_10_T; #endif } if( i & BMCR_FULL_DUPLEX ) { printf(" FD"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_FDX; #else ifp->if_flags |= IFF_LINK1; #endif } } /* Init ifmedia interface */ #if !defined(EPIC_NOIFMEDIA) ifmedia_init(&sc->ifmedia,0,epic_ifmedia_change,epic_ifmedia_status); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T|IFM_LOOP,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T|IFM_FDX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX|IFM_LOOP,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX|IFM_FDX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_AUTO,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_LOOP,0,NULL); ifmedia_set(&sc->ifmedia, tmp); #endif /* Attach os interface and bpf */ if_attach(ifp); ether_ifattach(ifp); #if NBPFILTER > 0 bpfattach(&sc->sc_if.if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif /* Set shutdown routine to stop DMA process */ shutdownhook_establish(epic_shutdown, sc); printf("\n"); } /* Simple call epic_stop() */ static void epic_shutdown( void *sc) { epic_stop(sc); } #else /* __FreeBSD__ */ /* -----------------------------FreeBSD------------------------------------- */ static char* epic_freebsd_probe __P((pcici_t, pcidi_t)); static void epic_freebsd_attach __P((pcici_t, int)); static void epic_shutdown __P((int, void *)); /* Global variables */ static u_long epic_pci_count; static struct pci_device txdevice = { "tx", epic_freebsd_probe, epic_freebsd_attach, &epic_pci_count, NULL }; /* Append this driver to pci drivers list */ DATA_SET ( pcidevice_set, txdevice ); /* Synopsis: Check if device id corresponds with SMC83C170 id. */ static char* epic_freebsd_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; } /* * Do FreeBSD-specific attach routine, like map registers, alloc softc * structure and etc. */ static void epic_freebsd_attach( pcici_t config_id, int unit) { struct ifnet *ifp; epic_softc_t *sc; #if defined(EPIC_USEIOSPACE) u_int32_t iobase; #else caddr_t pmembase; #endif int i,k,s,tmp; u_int32_t pool; printf("tx%d",unit); /* Allocate memory for softc, hardware descriptors and frag lists */ sc = (epic_softc_t *) malloc( sizeof(epic_softc_t), M_DEVBUF, M_NOWAIT); if (sc == NULL) return; /* Preinitialize softc structure */ bzero(sc, sizeof(epic_softc_t)); sc->unit = unit; /* Fill ifnet structure */ ifp = &sc->sc_if; ifp->if_unit = unit; ifp->if_name = "tx"; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST; 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; /* Get iobase or membase */ #if defined(EPIC_USEIOSPACE) if (!pci_map_port(config_id, PCI_CBIO,(u_short *) &(sc->iobase))) { printf(": cannot map port\n"); free(sc, M_DEVBUF); return; } #else if (!pci_map_mem(config_id, PCI_CBMA,(vm_offset_t *) &(sc->csr),(vm_offset_t *) &pmembase)) { printf(": cannot map memory\n"); free(sc, M_DEVBUF); return; } #endif if( epic_common_attach(sc) ) return; /* Display ethernet address ,... */ printf(": address %02x:%02x:%02x:%02x:%02x:%02x,", sc->sc_macaddr[0],sc->sc_macaddr[1],sc->sc_macaddr[2], sc->sc_macaddr[3],sc->sc_macaddr[4],sc->sc_macaddr[5]); /* board type and ... */ printf(" type "); for(i=0x2c;i<0x32;i++) { tmp = epic_read_eeprom( sc, i ); if( ' ' == (u_int8_t)tmp ) break; printf("%c",(u_int8_t)tmp); tmp >>= 8; if( ' ' == (u_int8_t)tmp ) break; printf("%c",(u_int8_t)tmp); } /* Read current media config and display it too */ i = PHY_READ_2( sc, DP83840_BMCR ); #if !defined(EPIC_NOIFMEDIA) tmp = IFM_ETHER; #endif if( i & BMCR_AUTONEGOTIATION ){ printf(", Auto-Neg "); /* To avoid bug in QS6612 read LPAR enstead of BMSR */ i = PHY_READ_2( sc, DP83840_LPAR ); if( i & (ANAR_100_TX|ANAR_100_TX_FD) ) printf("100Mbps "); else printf("10Mbps "); if( i & (ANAR_10_FD|ANAR_100_TX_FD) ) printf("FD"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_AUTO; #endif } else { #if defined(EPIC_NOIFMEDIA) ifp->if_flags |= IFF_LINK0; #endif if( i & BMCR_100MBPS ) { printf(", 100Mbps "); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_100_TX; #else ifp->if_flags |= IFF_LINK2; #endif } else { printf(", 10Mbps "); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_10_T; #endif } if( i & BMCR_FULL_DUPLEX ) { printf("FD"); #if !defined(EPIC_NOIFMEDIA) tmp |= IFM_FDX; #else ifp->if_flags |= IFF_LINK1; #endif } } /* Init ifmedia interface */ #if !defined(EPIC_NOIFMEDIA) ifmedia_init(&sc->ifmedia,0,epic_ifmedia_change,epic_ifmedia_status); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T|IFM_LOOP,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_10_T|IFM_FDX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX|IFM_LOOP,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_100_TX|IFM_FDX,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_AUTO,0,NULL); ifmedia_add(&sc->ifmedia,IFM_ETHER|IFM_LOOP,0,NULL); ifmedia_set(&sc->ifmedia, tmp); #endif s = splimp(); /* Map interrupt */ if( !pci_map_int(config_id, epic_intr, (void*)sc, &net_imask) ) { printf(": couldn't map interrupt\n"); free(sc, M_DEVBUF); return; } /* Set shut down routine to stop DMA processes on reboot */ at_shutdown(epic_shutdown, sc, SHUTDOWN_POST_SYNC); /* Attach to if manager */ if_attach(ifp); ether_ifattach(ifp); #if NBPFILTER > 0 bpfattach(ifp,DLT_EN10MB, sizeof(struct ether_header)); #endif splx(s); printf("\n"); return; } static void epic_shutdown( int howto, void *sc) { epic_stop(sc); } #endif /* __OpenBSD__ */ /* ------------------------------------------------------------------------ OS-independing part ------------------------------------------------------------------------ */ /* * This is if_ioctl handler. */ static int epic_ifioctl __P(( register struct ifnet * ifp, EPIC_IFIOCTL_CMD_TYPE command, caddr_t data)) { epic_softc_t *sc = ifp->if_softc; int x, error = 0; x = splimp(); switch (command) { #if defined(__FreeBSD__) case SIOCSIFADDR: case SIOCGIFADDR: case SIOCSIFMTU: error = ether_ioctl(ifp, command, data); break; #else /* __OpenBSD__ */ case SIOCSIFADDR: { struct ifaddr *ifa = (struct ifaddr *)data; ifp->if_flags |= IFF_UP; switch(ifa->ifa_addr->sa_family) { #if INET case AF_INET: epic_stop(sc); epic_init(sc); arp_ifinit(&sc->arpcom,ifa); break; #endif /* __FreeBSD__ */ #if NS case AF_NS: { register struct ns_addr * ina = &IA_SNS(ifa)->sns_addr; if( ns_nullhost(*ina) ) ina->x_host = *(union ns_host *) LLADDR(ifp->if_sadl); else bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), ifp->if_addrlen); epic_stop(sc); epic_init(sc); break; } #endif default: epic_stop(sc); epic_init(sc); break; } } #endif 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); break; } } /* Handle IFF_PROMISC flag */ epic_set_rx_mode(sc); #if defined(EPIC_NOIFMEDIA) /* Handle IFF_LINKx flags */ epic_set_media_speed(sc); #endif 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((struct ifreq *)data, &sc->arpcom) : ether_delmulti((struct ifreq *)data, &sc->arpcom); if (error == ENETRESET) { epic_set_mc_table(sc); error = 0; } #endif break; #if !defined(EPIC_NOIFMEDIA) case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, (struct ifreq *)data, &sc->ifmedia, command); break; #endif default: error = EINVAL; } splx(x); return error; } /* * OS-independed part of attach process. allocate memory for descriptors * and frag lists, wake up chip, read MAC address and PHY identyfier. * Return -1 on failure. */ static int epic_common_attach( epic_softc_t *sc) { int i; caddr_t pool; i = sizeof(struct epic_frag_list)*TX_RING_SIZE + sizeof(struct epic_rx_desc)*RX_RING_SIZE + sizeof(struct epic_tx_desc)*TX_RING_SIZE + PAGE_SIZE, sc->pool = (epic_softc_t *) malloc( i, M_DEVBUF, M_NOWAIT); if (sc->pool == NULL) { printf(": can't allocate memory for buffers\n"); return -1; } bzero(sc->pool, i); /* Align pool on PAGE_SIZE */ pool = (caddr_t)sc->pool; pool = (caddr_t)((u_int32_t)(pool + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1)); /* Distribute memory */ sc->tx_flist = (void *)pool; pool += sizeof(struct epic_frag_list)*TX_RING_SIZE; sc->rx_desc = (void *)pool; pool += sizeof(struct epic_rx_desc)*RX_RING_SIZE; sc->tx_desc = (void *)pool; /* Bring the chip out of low-power mode. */ CSR_WRITE_4( sc, GENCTL, 0x0000 ); /* Magic?! If we don't set this bit the MII interface won't work. */ CSR_WRITE_4( sc, TEST1, 0x0008 ); /* Read mac address from EEPROM */ for (i = 0; i < ETHER_ADDR_LEN / sizeof(u_int16_t); i++) ((u_int16_t *)sc->sc_macaddr)[i] = epic_read_eeprom(sc,i); /* Identify PHY */ sc->phyid = PHY_READ_2(sc, DP83840_PHYIDR1 )<<6; sc->phyid|= (PHY_READ_2( sc, DP83840_PHYIDR2 )>>10)&0x3F; if( QS6612_OUI != sc->phyid ) printf(": WARNING! PHY unknown (0x%x)",sc->phyid); sc->tx_threshold = TRANSMIT_THRESHOLD; sc->txcon = TXCON_DEFAULT; return 0; } /* * This is if_start handler. It takes mbufs from if_snd queue * and quque them for transmit, one by one, until TX ring become full * or quque become empty. */ static void epic_ifstart(struct ifnet * const ifp){ epic_softc_t *sc = ifp->if_softc; struct epic_tx_buffer *buf; struct epic_tx_desc *desc; struct epic_frag_list *flist; struct mbuf *m0; register struct mbuf *m; register int i; /* If no link is established, simply free all mbufs in queue */ PHY_READ_2( sc, DP83840_BMSR ); if( !(BMSR_LINK_STATUS & PHY_READ_2( sc, DP83840_BMSR )) ){ IF_DEQUEUE( &ifp->if_snd, m0 ); while( m0 ) { m_freem(m0); IF_DEQUEUE( &ifp->if_snd, m0 ); } return; } /* Link is OK, queue packets to NIC */ while( sc->pending_txs < TX_RING_SIZE ){ buf = sc->tx_buffer + sc->cur_tx; desc = sc->tx_desc + sc->cur_tx; flist = sc->tx_flist + sc->cur_tx; /* Get next packet to send */ IF_DEQUEUE( &ifp->if_snd, m0 ); /* If nothing to send, return */ if( NULL == m0 ) return; /* If descriptor is busy, set IFF_OACTIVE and exit */ if( desc->status & 0x8000 ) { dprintf((EPIC_FORMAT ": desc is busy in ifstart, up and down interface please\n",EPIC_ARGS(sc))); break; } if( buf->mbuf ) { dprintf((EPIC_FORMAT ": mbuf not freed in ifstart, up and down interface plase\n",EPIC_ARGS(sc))); break; } /* Fill fragments list */ for( m=m0, i=0; (NULL != m) && (i < EPIC_MAX_FRAGS); m = m->m_next, i++ ) { flist->frag[i].fraglen = m->m_len; flist->frag[i].fragaddr = vtophys( mtod(m, caddr_t) ); } flist->numfrags = i; /* If packet was more than EPIC_MAX_FRAGS parts, */ /* recopy packet to new allocated mbuf cluster */ if( NULL != m ){ EPIC_MGETCLUSTER(m); if( NULL == m ){ printf(EPIC_FORMAT ": cannot allocate mbuf cluster\n",EPIC_ARGS(sc)); m_freem(m0); ifp->if_oerrors++; continue; } m_copydata( m0, 0, m0->m_pkthdr.len, mtod(m,caddr_t) ); flist->frag[0].fraglen = m->m_pkthdr.len = m->m_len = m0->m_pkthdr.len; m->m_pkthdr.rcvif = ifp; flist->numfrags = 1; flist->frag[0].fragaddr = vtophys( mtod(m, caddr_t) ); m_freem(m0); m0 = m; } buf->mbuf = m0; sc->pending_txs++; sc->cur_tx = ( sc->cur_tx + 1 ) & TX_RING_MASK; desc->control = 0x01; desc->txlength = max(m0->m_pkthdr.len,ETHER_MIN_LEN-ETHER_CRC_LEN); desc->status = 0x8000; CSR_WRITE_4( sc, COMMAND, COMMAND_TXQUEUED ); /* Set watchdog timer */ ifp->if_timer = 8; #if NBPFILTER > 0 if( ifp->if_bpf ) #if defined(__FreeBSD__) bpf_mtap( ifp, m0 ); #else /* __OpenBSD__ */ bpf_mtap( ifp->if_bpf, m0 ); #endif /* __FreeBSD__ */ #endif } ifp->if_flags |= IFF_OACTIVE; return; } /* * * splimp() invoked before epic_intr_normal() */ static __inline void epic_rx_done __P(( epic_softc_t *sc )) { u_int16_t len; struct epic_rx_buffer *buf; struct epic_rx_desc *desc; struct mbuf *m; struct ether_header *eh; while( !(sc->rx_desc[sc->cur_rx].status & 0x8000) ) { buf = sc->rx_buffer + sc->cur_rx; desc = sc->rx_desc + sc->cur_rx; /* Switch to next descriptor */ sc->cur_rx = (sc->cur_rx+1) & RX_RING_MASK; /* Check for errors, this should happend */ /* only if SAVE_ERRORED_PACKETS is set, */ /* normaly rx errors generate RXE interrupt */ if( !(desc->status & 1) ) { dprintf((EPIC_FORMAT ": Rx error status: 0x%x\n",EPIC_ARGS(sc),desc->status)); sc->sc_if.if_ierrors++; desc->status = 0x8000; continue; } /* Save packet length and mbuf contained packet */ len = desc->rxlength - ETHER_CRC_LEN; m = buf->mbuf; /* Try to get mbuf cluster */ EPIC_MGETCLUSTER( buf->mbuf ); if( NULL == buf->mbuf ) { printf(EPIC_FORMAT ": cannot allocate mbuf cluster\n",EPIC_ARGS(sc)); buf->mbuf = m; desc->status = 0x8000; sc->sc_if.if_ierrors++; continue; } /* Point to new mbuf, and give descriptor to chip */ desc->bufaddr = vtophys( mtod( buf->mbuf, caddr_t ) ); desc->status = 0x8000; /* First mbuf in packet holds the ethernet and packet headers */ eh = mtod( m, struct ether_header * ); m->m_pkthdr.rcvif = &(sc->sc_if); m->m_pkthdr.len = m->m_len = len; #if NBPFILTER > 0 /* Give mbuf to BPFILTER */ if( sc->sc_if.if_bpf ) #if defined(__FreeBSD__) bpf_mtap( &sc->sc_if, m ); #else /* __OpenBSD__ */ bpf_mtap( sc->sc_if.if_bpf, m ); #endif /* __FreeBSD__ */ /* Accept only our packets, broadcasts and multicasts */ if( (eh->ether_dhost[0] & 1) == 0 && bcmp(eh->ether_dhost,sc->sc_macaddr,ETHER_ADDR_LEN)){ m_freem(m); continue; } #endif /* Second mbuf holds packet ifself */ m->m_pkthdr.len = m->m_len = len - sizeof(struct ether_header); m->m_data += sizeof( struct ether_header ); /* Give mbuf to OS */ ether_input(&sc->sc_if, eh, m); /* Successfuly received frame */ sc->sc_if.if_ipackets++; } return; } /* * Synopsis: Do last phase of transmission. I.e. if desc is * transmitted, decrease pending_txs counter, free mbuf contained * packet, switch to next descriptor and repeat until no packets * are pending or descriptro is not transmitted yet. */ static __inline void epic_tx_done __P(( register epic_softc_t *sc )) { struct epic_tx_buffer *buf; struct epic_tx_desc *desc; u_int16_t status; while( sc->pending_txs > 0 ){ buf = sc->tx_buffer + sc->dirty_tx; desc = sc->tx_desc + sc->dirty_tx; status = desc->status; /* If packet is not transmitted, thou followed */ /* packets are not transmitted too */ if( status & 0x8000 ) break; /* Packet is transmitted. Switch to next and */ /* free mbuf */ sc->pending_txs--; sc->dirty_tx = (sc->dirty_tx + 1) & TX_RING_MASK; m_freem( buf->mbuf ); buf->mbuf = NULL; /* Check for errors and collisions */ if( status & 0x0001 ) sc->sc_if.if_opackets++; else sc->sc_if.if_oerrors++; sc->sc_if.if_collisions += (status >> 8) & 0x1F; #if defined(EPIC_DEBUG) if( (status & 0x1001) == 0x1001 ) dprintf((EPIC_FORMAT ": frame not transmitted due collisions\n",EPIC_ARGS(sc))); #endif } if( sc->pending_txs < TX_RING_SIZE ) sc->sc_if.if_flags &= ~IFF_OACTIVE; } /* * Interrupt function * * splimp() assumed to be done */ static EPIC_INTR_RET_TYPE epic_intr ( void *arg) { epic_softc_t * sc = (epic_softc_t *) arg; int status,i=4; #if defined(__OpenBSD__) int claimed = 0; #endif while( i-- && ((status = CSR_READ_4(sc, INTSTAT)) & INTSTAT_INT_ACTV) ){ #if defined(__OpenBSD__) claimed = 1; #endif CSR_WRITE_4( sc, INTSTAT, status ); if( status & (INTSTAT_RQE|INTSTAT_RCC|INTSTAT_OVW) ) { epic_rx_done( sc ); if( status & (INTSTAT_RQE|INTSTAT_OVW) ){ #if defined(EPIC_DEBUG) if( status & INTSTAT_OVW ) printf(EPIC_FORMAT ": RX buffer overflow\n",EPIC_ARGS(sc)); if( status & INTSTAT_RQE ) printf(EPIC_FORMAT ": RX FIFO overflow\n",EPIC_ARGS(sc)); if( sc->sc_if.if_flags & IFF_DEBUG ) epic_dump_state(sc); #endif if( !(CSR_READ_4( sc, COMMAND ) & COMMAND_RXQUEUED) ) CSR_WRITE_4( sc, COMMAND, COMMAND_RXQUEUED ); sc->sc_if.if_ierrors++; } } if( status & (INTSTAT_TXC|INTSTAT_TCC|INTSTAT_TQE) ) { epic_tx_done( sc ); if(!(sc->sc_if.if_flags & IFF_OACTIVE) && sc->sc_if.if_snd.ifq_head ) epic_ifstart( &sc->sc_if ); } if( (status & INTSTAT_GP2) && (QS6612_OUI == sc->phyid) ) { u_int32_t phystatus = PHY_READ_2( sc, QS6612_INTSTAT ); if( phystatus & INTSTAT_AN_COMPLETE ) { u_int32_t bmcr; if( epic_autoneg(sc) == EPIC_FULL_DUPLEX ) { bmcr = BMCR_FULL_DUPLEX | PHY_READ_2( sc, DP83840_BMCR ); sc->txcon |= TXCON_FULL_DUPLEX; CSR_WRITE_4( sc, TXCON, sc->txcon ); } else { /* Default to half-duplex */ bmcr = ~BMCR_FULL_DUPLEX & PHY_READ_2( sc, DP83840_BMCR ); sc->txcon &= ~TXCON_FULL_DUPLEX; CSR_WRITE_4( sc, TXCON, sc->txcon ); } /* There is apparently QS6612 chip bug: */ /* BMCR_FULL_DUPLEX flag is not updated by */ /* autonegotiation process, so update it by hands */ /* so we can rely on it in epic_ifmedia_status() */ PHY_WRITE_2( sc, DP83840_BMCR, bmcr ); } PHY_READ_2(sc, DP83840_BMSR); if( !(PHY_READ_2(sc, DP83840_BMSR) & BMSR_LINK_STATUS) ) { dprintf((EPIC_FORMAT ": WARNING! link down\n",EPIC_ARGS(sc))); sc->flags |= EPIC_LINK_DOWN; } else { dprintf((EPIC_FORMAT ": link up\n",EPIC_ARGS(sc))); sc->flags &= ~EPIC_LINK_DOWN; } /* We should clear GP2 int again after we clear it on PHY */ CSR_WRITE_4( sc, INTSTAT, INTSTAT_GP2 ); } /* Check for errors */ if( status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA| INTSTAT_APE|INTSTAT_DPE|INTSTAT_TXU|INTSTAT_RXE) ){ if( status & (INTSTAT_FATAL|INTSTAT_PMA|INTSTAT_PTA| INTSTAT_APE|INTSTAT_DPE) ){ printf(EPIC_FORMAT ": PCI fatal error occured (%s%s%s%s)\n", EPIC_ARGS(sc), (status&INTSTAT_PMA)?"PMA":"", (status&INTSTAT_PTA)?" PTA":"", (status&INTSTAT_APE)?" APE":"", (status&INTSTAT_DPE)?" DPE":"" ); epic_dump_state(sc); epic_stop(sc); epic_init(sc); break; } if (status & INTSTAT_RXE) { dprintf((EPIC_FORMAT ": CRC/Alignment error\n",EPIC_ARGS(sc))); sc->sc_if.if_ierrors++; } /* Tx FIFO underflow. Increase tx threshold, */ /* if it grown above 2048, disable EARLY_TX */ if (status & INTSTAT_TXU) { if( sc->tx_threshold > 0x800 ) { sc->txcon &= ~TXCON_EARLY_TRANSMIT_ENABLE; dprintf((EPIC_FORMAT ": TX underrun error, early tx disabled\n",EPIC_ARGS(sc))); } else { sc->tx_threshold += 0x40; dprintf((EPIC_FORMAT ": TX underrun error, tx threshold increased to %d\n",EPIC_ARGS(sc),sc->tx_threshold)); } epic_stop_activity(sc); epic_set_tx_mode(sc); epic_start_activity(sc); sc->sc_if.if_oerrors++; /* Restart the transmit process. */ /* CSR_WRITE_4(sc, COMMAND, COMMAND_TXUGO|COMMAND_TXQUEUED); */ } } } /* If no packets are pending, thus no timeouts */ if( sc->pending_txs == 0 ) sc->sc_if.if_timer = 0; #if defined(__OpenBSD__) return claimed; #endif } /* * Synopsis: This one is called if packets wasn't transmitted * during timeout. Try to deallocate transmitted packets, and * if success continue to work. * * splimp() invoked here */ static void epic_ifwatchdog __P(( struct ifnet *ifp)) { epic_softc_t *sc = ifp->if_softc; int x; x = splimp(); printf(EPIC_FORMAT ": device timeout %d packets, ", EPIC_ARGS(sc),sc->pending_txs); /* Try to finish queued packets */ epic_tx_done( sc ); /* If not successful */ if( sc->pending_txs > 0 ){ #if defined(EPIC_DEBUG) if( ifp->if_flags & IFF_DEBUG ) epic_dump_state(sc); #endif ifp->if_oerrors+=sc->pending_txs; /* Reinitialize board */ printf("reinitialization\n"); epic_stop(sc); epic_init(sc); } else printf("seems we can continue normaly\n"); /* Start output */ if( ifp->if_snd.ifq_head ) epic_ifstart( ifp ); splx(x); } #if defined(SIOCSIFMEDIA) && !defined(EPIC_NOIFMEDIA) static int epic_ifmedia_change __P(( struct ifnet * ifp)) { epic_softc_t *sc = (epic_softc_t *)(ifp->if_softc); if (IFM_TYPE(sc->ifmedia.ifm_media) != IFM_ETHER) return (EINVAL); epic_set_media_speed(sc); return 0; } static void epic_ifmedia_status __P(( struct ifnet * ifp, struct ifmediareq *ifmr)) { epic_softc_t *sc = ifp->if_softc; u_int32_t bmcr; u_int32_t bmsr; bmcr = PHY_READ_2( sc, DP83840_BMCR ); PHY_READ_2( sc, DP83840_BMSR ); bmsr = PHY_READ_2( sc, DP83840_BMSR ); ifmr->ifm_active = IFM_ETHER; ifmr->ifm_status = IFM_AVALID; if( !(bmsr & BMSR_LINK_STATUS) ) { ifmr->ifm_active |= (bmcr&BMCR_AUTONEGOTIATION)?IFM_AUTO:IFM_NONE; return; } ifmr->ifm_status |= IFM_ACTIVE; ifmr->ifm_active |= (bmcr&BMCR_100MBPS)?IFM_100_TX:IFM_10_T; ifmr->ifm_active |= (bmcr&BMCR_FULL_DUPLEX)?IFM_FDX:0; ifmr->ifm_active |= ((CSR_READ_4(sc,TXCON)&TXCON_LOOPBACK_MODE)==TXCON_LOOPBACK_MODE_INT)?IFM_LOOP:0; } #endif /* * Reset chip, PHY, allocate rings * * splimp() invoked here */ static int epic_init __P(( epic_softc_t * sc)) { struct ifnet *ifp = &sc->sc_if; int s; s = splimp(); /* Soft reset the chip */ CSR_WRITE_4( sc, GENCTL, GENCTL_SOFT_RESET ); /* Reset takes 15 pci ticks which depends on processor speed */ DELAY(1); /* Wake up */ CSR_WRITE_4( sc, GENCTL, 0 ); /* ?????? */ CSR_WRITE_4( sc, TEST1, 0x0008); /* Initialize rings */ if( epic_init_rings( sc ) ) { printf(EPIC_FORMAT ": failed to init rings\n",EPIC_ARGS(sc)); splx(s); return -1; } /* Give rings to EPIC */ CSR_WRITE_4( sc, PRCDAR, vtophys( sc->rx_desc ) ); CSR_WRITE_4( sc, PTCDAR, vtophys( sc->tx_desc ) ); /* Put node address to EPIC */ CSR_WRITE_4( sc, LAN0, ((u_int16_t *)sc->sc_macaddr)[0] ); CSR_WRITE_4( sc, LAN1, ((u_int16_t *)sc->sc_macaddr)[1] ); CSR_WRITE_4( sc, LAN2, ((u_int16_t *)sc->sc_macaddr)[2] ); /* Set tx mode, includeing transmit threshold */ epic_set_tx_mode(sc); /* Compute and set RXCON. */ epic_set_rx_mode( sc ); /* Set media speed mode */ epic_init_phy( sc ); epic_set_media_speed( sc ); /* Set multicast table */ epic_set_mc_table( sc ); /* Enable interrupts by setting the interrupt mask. */ CSR_WRITE_4( sc, INTMASK, INTSTAT_RCC | INTSTAT_RQE | INTSTAT_OVW | INTSTAT_RXE | INTSTAT_TXC | INTSTAT_TCC | INTSTAT_TQE | INTSTAT_TXU | INTSTAT_FATAL | ((QS6612_OUI == sc->phyid)?INTSTAT_GP2:0) ); /* Enable interrupts, set for PCI read multiple and etc */ CSR_WRITE_4( sc, GENCTL, GENCTL_ENABLE_INTERRUPT | GENCTL_MEMORY_READ_MULTIPLE | GENCTL_ONECOPY | GENCTL_RECEIVE_FIFO_THRESHOLD64 ); /* 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; /* Start Rx process */ epic_start_activity(sc); splx(s); return 0; } /* * Synopsis: calculate and set Rx mode */ static void epic_set_rx_mode( epic_softc_t * sc) { u_int32_t flags = sc->sc_if.if_flags; u_int32_t rxcon = RXCON_DEFAULT | RXCON_RECEIVE_MULTICAST_FRAMES | RXCON_RECEIVE_BROADCAST_FRAMES; rxcon |= (flags & IFF_PROMISC)?RXCON_PROMISCUOUS_MODE:0; CSR_WRITE_4( sc, RXCON, rxcon ); return; } /* * Synopsis: Reset PHY and do PHY-special initialization: */ static void epic_init_phy __P(( epic_softc_t * sc)) { u_int32_t i; /* Reset PHY */ PHY_WRITE_2( sc, DP83840_BMCR, BMCR_RESET ); for(i=0;i<0x100000;i++) if( !(PHY_READ_2( sc, DP83840_BMCR ) & BMCR_RESET) ) break; if( PHY_READ_2( sc, DP83840_BMCR ) & BMCR_RESET ) printf(EPIC_FORMAT ": WARNING! cannot reset PHY\n",EPIC_ARGS(sc)); switch( sc->phyid ){ case QS6612_OUI: /* Init QS6612 and EPIC to generate interrupt when AN complete*/ CSR_WRITE_4( sc, NVCTL, NVCTL_GP1_OUTPUT_ENABLE ); PHY_READ_2( sc, QS6612_INTSTAT ); PHY_WRITE_2( sc, QS6612_INTMASK, INTMASK_THUNDERLAN | INTSTAT_AN_COMPLETE | INTSTAT_LINK_STATUS ); /* Enable QS6612 extended cable length capabilites */ PHY_WRITE_2( sc, QS6612_MCTL, PHY_READ_2( sc,QS6612_MCTL ) | MCTL_BTEXT ); break; default: break; } } /* * Synopsis: Set PHY to media type specified by IFF_LINK* flags or * ifmedia structure. */ static void epic_set_media_speed __P(( epic_softc_t * sc)) { u_int16_t media; #if !defined(EPIC_NOIFMEDIA) u_int32_t tgtmedia = sc->ifmedia.ifm_cur->ifm_media; if( IFM_SUBTYPE(tgtmedia) != IFM_AUTO ){ /* Set mode */ media = (IFM_SUBTYPE(tgtmedia)==IFM_100_TX) ? BMCR_100MBPS : 0; media|= (tgtmedia&IFM_FDX) ? BMCR_FULL_DUPLEX : 0; sc->sc_if.if_baudrate = (IFM_SUBTYPE(tgtmedia)==IFM_100_TX)?100000000:10000000; PHY_WRITE_2( sc, DP83840_BMCR, media ); if( tgtmedia & IFM_FDX ) sc->txcon |= TXCON_FULL_DUPLEX; else sc->txcon &= ~TXCON_FULL_DUPLEX; if( tgtmedia & IFM_LOOP ) sc->txcon |= TXCON_LOOPBACK_MODE_INT; else sc->txcon &= ~TXCON_LOOPBACK_MODE_INT; CSR_WRITE_4( sc, TXCON, sc->txcon ); } #else /* EPIC_NOIFMEDIA */ struct ifnet *ifp = &sc->sc_if; if( ifp->if_flags & IFF_LINK0 ) { /* Set mode */ media = (ifp->if_flags & IFF_LINK2) ? BMCR_100MBPS : 0; media|= (ifp->if_flags & IFF_LINK1) ? BMCR_FULL_DUPLEX : 0; sc->sc_if.if_baudrate = (ifp->if_flags & IFF_LINK2)?100000000:10000000; PHY_WRITE_2( sc, DP83840_BMCR, media ); if( ifp->if_flags & IFF_LINK2 ) sc->txcon |= TXCON_FULL_DUPLEX; else sc->txcon &= ~TXCON_FULL_DUPLEX; CSR_WRITE_4( sc, TXCON, sc->txcon ); } #endif /* !EPIC_NOIFMEDIA */ else { sc->sc_if.if_baudrate = 100000000; sc->txcon &= ~TXCON_FULL_DUPLEX; CSR_WRITE_4(sc, TXCON, sc->txcon); /* Set and restart autoneg */ PHY_WRITE_2( sc, DP83840_BMCR, BMCR_AUTONEGOTIATION | BMCR_RESTART_AUTONEG ); /* If it is not QS6612 PHY, try to get result of autoneg. */ if( QS6612_OUI != sc->phyid ) { /* Wait 3 seconds for the autoneg to finish * This is the recommended time from the DP83840A data * sheet Section 7.1 */ DELAY(3000000); if( epic_autoneg(sc) == EPIC_FULL_DUPLEX ) { sc->txcon |= TXCON_FULL_DUPLEX; CSR_WRITE_4(sc, TXCON, sc->txcon); } } /* Else it will be done when GP2 int occured */ } return; } /* * This functions get results of 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) { u_int16_t media; u_int16_t i; /* BMSR must be read twice to update the link status bit * since that bit is a latch bit */ PHY_READ_2( sc, DP83840_BMSR); i = PHY_READ_2( sc, DP83840_BMSR); if ((i & BMSR_LINK_STATUS) && (i & BMSR_AUTONEG_COMPLETE)){ i = PHY_READ_2( sc, DP83840_LPAR ); if ( i & (ANAR_100_TX_FD|ANAR_10_FD) ) 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 */ PHY_READ_2( sc, DP83840_ANER ); i = PHY_READ_2( sc, DP83840_ANER ); if ( i & ANER_MULTIPLE_LINK_FAULT ) { /* it can be forced to 100Mb/s Half-Duplex */ media = PHY_READ_2( sc, DP83840_BMCR ); media &= ~(BMCR_AUTONEGOTIATION | BMCR_FULL_DUPLEX); media |= BMCR_100MBPS; PHY_WRITE_2( sc, DP83840_BMCR, media ); /* read BMSR again to determine link status */ PHY_READ_2( sc, DP83840_BMSR ); i=PHY_READ_2( sc, DP83840_BMSR ); if (i & BMSR_LINK_STATUS){ /* port is linked to the non Auto-Negotiation * 100Mbs partner. */ return EPIC_HALF_DUPLEX; } else { media = PHY_READ_2( sc, DP83840_BMCR); media &= ~(BMCR_AUTONEGOTIATION | BMCR_FULL_DUPLEX | BMCR_100MBPS); PHY_WRITE_2( sc, DP83840_BMCR, media); PHY_READ_2( sc, DP83840_BMSR ); i = PHY_READ_2( sc, 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; } } /* */ static void epic_set_tx_mode ( epic_softc_t *sc ) { if( sc->txcon & TXCON_EARLY_TRANSMIT_ENABLE ) CSR_WRITE_4( sc, ETXTHR, sc->tx_threshold ); CSR_WRITE_4( sc, TXCON, sc->txcon ); } /* * Synopsis: This function should update multicast hash table. * I suppose there is a bug in chips MC filter so this function * only set it to receive all MC packets. The second problem is * that we should wait for TX and RX processes to stop before * reprogramming MC filter. The epic_stop_activity() and * epic_start_activity() should help to do this. */ static void epic_set_mc_table ( epic_softc_t * sc) { struct ifnet *ifp = &sc->sc_if; if( ifp->if_flags & IFF_MULTICAST ){ CSR_WRITE_4( sc, MC0, 0xFFFF ); CSR_WRITE_4( sc, MC1, 0xFFFF ); CSR_WRITE_4( sc, MC2, 0xFFFF ); CSR_WRITE_4( sc, MC3, 0xFFFF ); } return; } /* * Synopsis: Start receive process and transmit, if need */ static void epic_start_activity __P(( epic_softc_t * sc)) { /* Start rx process */ CSR_WRITE_4( sc, COMMAND, COMMAND_RXQUEUED | COMMAND_START_RX | (sc->pending_txs?COMMAND_TXQUEUED:0)); } /* * Synopsis: Completely stop Rx and Tx processes. If TQE is set additional * packet needs to be queued to stop Tx DMA. */ static void epic_stop_activity __P(( epic_softc_t * sc)) { int i; /* Turn it to loopback mode */ CSR_WRITE_4( sc, TXCON, TXCON_SLOT_TIME|TXCON_LOOPBACK_MODE_INT ); /* Stop Tx and Rx DMA */ CSR_WRITE_4(sc,COMMAND,COMMAND_STOP_RX|COMMAND_STOP_RDMA|COMMAND_STOP_TDMA); /* Wait only Rx DMA */ dprintf((EPIC_FORMAT ": waiting Rx DMA to stop\n",EPIC_ARGS(sc))); for(i=0;i<0x1000;i++) { if( (CSR_READ_4(sc,INTSTAT) & INTSTAT_RXIDLE) == INTSTAT_RXIDLE ) break; DELAY(1); } if( !(CSR_READ_4(sc,INTSTAT)&INTSTAT_RXIDLE) ) printf(EPIC_FORMAT ": can't stop RX DMA\n",EPIC_ARGS(sc)); /* May need to queue one more packet if TQE */ if( (CSR_READ_4( sc, INTSTAT ) & INTSTAT_TQE) && !(CSR_READ_4( sc, INTSTAT ) & INTSTAT_TXIDLE) ){ dprintf((EPIC_FORMAT ": queue last packet\n",EPIC_ARGS(sc))); sc->tx_desc[sc->cur_tx].bufaddr = vtophys( sc ); sc->tx_desc[sc->cur_tx].buflength = ETHER_MIN_LEN-ETHER_CRC_LEN; sc->tx_desc[sc->cur_tx].control = 0x14; sc->tx_desc[sc->cur_tx].txlength = ETHER_MIN_LEN-ETHER_CRC_LEN; sc->tx_desc[sc->cur_tx].status = 0x8000; sc->cur_tx = (sc->cur_tx + 1) & TX_RING_MASK; sc->pending_txs++; CSR_WRITE_4( sc, COMMAND, COMMAND_TXQUEUED ); dprintf((EPIC_FORMAT ": waiting Tx DMA to stop\n",EPIC_ARGS(sc))); /* Wait TX DMA to stop */ for(i=0;i<0x1000;i++) { if( (CSR_READ_4(sc,INTSTAT)&INTSTAT_TXIDLE) == INTSTAT_TXIDLE ) { sc->pending_txs--; break; } DELAY(1); } if( !(CSR_READ_4(sc,INTSTAT)&INTSTAT_TXIDLE) ) printf(EPIC_FORMAT ": can't stop TX DMA\n",EPIC_ARGS(sc)); /* Restore old TX state */ CSR_WRITE_4( sc, TXCON, sc->txcon ); } } /* * Synopsis: Shut down board and deallocates rings. * * splimp() invoked here */ static void epic_stop __P(( epic_softc_t * sc)) { int s; s = splimp(); sc->sc_if.if_timer = 0; /* Disable interrupts */ CSR_WRITE_4( sc, INTMASK, 0 ); CSR_WRITE_4( sc, GENCTL, 0 ); /* Try to stop Rx and TX processes */ epic_stop_activity(sc); /* Reset chip */ CSR_WRITE_4( sc, GENCTL, GENCTL_SOFT_RESET ); DELAY(10); /* Free memory allocated for rings */ epic_free_rings(sc); /* Mark as stoped */ sc->sc_if.if_flags &= ~IFF_RUNNING; splx(s); return; } /* * Synopsis: This function should free all memory allocated for rings. */ static void epic_free_rings __P(( epic_softc_t * sc)) { int i; for(i=0;irx_buffer + i; struct epic_rx_desc *desc = sc->rx_desc + i; desc->status = 0; desc->buflength = 0; desc->bufaddr = 0; if( buf->mbuf ) m_freem( buf->mbuf ); buf->mbuf = NULL; } for(i=0;itx_buffer + i; struct epic_tx_desc *desc = sc->tx_desc + i; desc->status = 0; desc->buflength = 0; desc->bufaddr = 0; if( buf->mbuf ) m_freem( buf->mbuf ); buf->mbuf = NULL; } } /* * Synopsis: Allocates mbufs for Rx ring and point Rx descs to them. * Point Tx descs to fragment lists. Check that all descs and fraglists * are bounded and aligned properly. */ static int epic_init_rings(epic_softc_t * sc){ int i; 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; struct epic_rx_desc *desc = sc->rx_desc + i; desc->status = 0; /* Owned by driver */ desc->next = vtophys( sc->rx_desc + ((i+1) & RX_RING_MASK) ); if( (desc->next & 3) || ((desc->next & 0xFFF) + sizeof(struct epic_rx_desc) > 0x1000 ) ) printf(EPIC_FORMAT ": WARNING! rx_desc is misbound or misaligned\n",EPIC_ARGS(sc)); EPIC_MGETCLUSTER( buf->mbuf ); if( NULL == buf->mbuf ) { epic_free_rings(sc); return -1; } desc->bufaddr = vtophys( mtod(buf->mbuf,caddr_t) ); desc->buflength = ETHER_MAX_FRAME_LEN; desc->status = 0x8000; /* Give to EPIC */ } for (i = 0; i < TX_RING_SIZE; i++) { struct epic_tx_buffer *buf = sc->tx_buffer + i; struct epic_tx_desc *desc = sc->tx_desc + i; desc->status = 0; desc->next = vtophys( sc->tx_desc + ( (i+1) & TX_RING_MASK ) ); if( (desc->next & 3) || ((desc->next & 0xFFF) + sizeof(struct epic_tx_desc) > 0x1000 ) ) printf(EPIC_FORMAT ": WARNING! tx_desc is misbound or misaligned\n",EPIC_ARGS(sc)); buf->mbuf = NULL; desc->bufaddr = vtophys( sc->tx_flist + i ); if( (desc->bufaddr & 3) || ((desc->bufaddr & 0xFFF) + sizeof(struct epic_frag_list) > 0x1000 ) ) printf(EPIC_FORMAT ": WARNING! frag_list is misbound or misaligned\n",EPIC_ARGS(sc)); } return 0; } /* * EEPROM operation functions */ static void epic_write_eepromreg __P(( epic_softc_t *sc, u_int8_t val)) { u_int16_t i; CSR_WRITE_1( sc, EECTL, val ); for( i=0;i<0xFF; i++) if( !(CSR_READ_1( sc, EECTL ) & 0x20) ) break; return; } static u_int8_t epic_read_eepromreg __P(( epic_softc_t *sc)) { return CSR_READ_1( sc,EECTL ); } static u_int8_t epic_eeprom_clock __P(( epic_softc_t *sc, u_int8_t val)) { epic_write_eepromreg( sc, val ); epic_write_eepromreg( sc, (val | 0x4) ); epic_write_eepromreg( sc, val ); return epic_read_eepromreg( sc ); } static void epic_output_eepromw __P(( epic_softc_t * sc, u_int16_t val)) { int i; for( i = 0xF; i >= 0; i--){ if( (val & (1 << i)) ) epic_eeprom_clock( sc, 0x0B ); else epic_eeprom_clock( sc, 3); } } static u_int16_t epic_input_eepromw __P(( epic_softc_t *sc)) { int i; int tmp; u_int16_t retval = 0; for( i = 0xF; i >= 0; i--) { tmp = epic_eeprom_clock( sc, 0x3 ); if( tmp & 0x10 ){ retval |= (1 << i); } } return retval; } static int epic_read_eeprom __P(( epic_softc_t *sc, u_int16_t loc)) { u_int16_t dataval; u_int16_t read_cmd; epic_write_eepromreg( sc , 3); if( epic_read_eepromreg( sc ) & 0x40 ) read_cmd = ( loc & 0x3F ) | 0x180; else read_cmd = ( loc & 0xFF ) | 0x600; epic_output_eepromw( sc, read_cmd ); dataval = epic_input_eepromw( sc ); epic_write_eepromreg( sc, 1 ); return dataval; } static u_int16_t epic_read_phy_register __P(( epic_softc_t *sc, u_int16_t loc)) { int i; CSR_WRITE_4( sc, MIICTL, ((loc << 4) | 0x0601) ); for( i=0;i<0x1000;i++) if( !(CSR_READ_4( sc, MIICTL )&1) ) break; return CSR_READ_4( sc, MIIDATA ); } static void epic_write_phy_register __P(( epic_softc_t * sc, u_int16_t loc, u_int16_t val)) { int i; CSR_WRITE_4( sc, MIIDATA, val ); CSR_WRITE_4( sc, MIICTL, ((loc << 4) | 0x0602) ); for( i=0;i<0x1000;i++) if( !(CSR_READ_4( sc, MIICTL )&2) ) break; return; } static void epic_dump_state __P(( epic_softc_t * sc)) { int j; struct epic_tx_desc *tdesc; struct epic_rx_desc *rdesc; printf(EPIC_FORMAT ": cur_rx: %d, pending_txs: %d, dirty_tx: %d, cur_tx: %d\n", EPIC_ARGS(sc),sc->cur_rx,sc->pending_txs,sc->dirty_tx,sc->cur_tx); printf(EPIC_FORMAT ": COMMAND: 0x%08x, INTSTAT: 0x%08x\n",EPIC_ARGS(sc),CSR_READ_4(sc,COMMAND),CSR_READ_4(sc,INTSTAT)); printf(EPIC_FORMAT ": PRCDAR: 0x%08x, PTCDAR: 0x%08x\n",EPIC_ARGS(sc),CSR_READ_4(sc,PRCDAR),CSR_READ_4(sc,PTCDAR)); printf(EPIC_FORMAT ": dumping rx descriptors\n",EPIC_ARGS(sc)); for(j=0;jrx_desc + j; printf("desc%d: %4d 0x%04x, 0x%08x, %4d, 0x%08x\n", j, rdesc->rxlength,rdesc->status, rdesc->bufaddr, rdesc->buflength, rdesc->next ); } printf(EPIC_FORMAT ": dumping tx descriptors\n",EPIC_ARGS(sc)); for(j=0;jtx_desc + j; printf("desc%d: %4d 0x%04x, 0x%08x, 0x%04x %4d, 0x%08x, mbuf: 0x%08x\n", j, tdesc->txlength,tdesc->status, tdesc->bufaddr, tdesc->control,tdesc->buflength, tdesc->next, sc->tx_buffer[j].mbuf ); } } #endif /* NPCI > 0 */