/* * Copyright (c) 1997,1998 Maxim Bolotin and Oleg Sharoiko. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ #include __FBSDID("$FreeBSD$"); /* * * Device driver for Crystal Semiconductor CS8920 based ethernet * adapters. By Maxim Bolotin and Oleg Sharoiko, 27-April-1997 */ /* #define CS_DEBUG */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef CS_USE_64K_DMA #define CS_DMA_BUFFER_SIZE 65536 #else #define CS_DMA_BUFFER_SIZE 16384 #endif static int cs_recv_delay = 570; SYSCTL_INT(_machdep, OID_AUTO, cs_recv_delay, CTLFLAG_RW, &cs_recv_delay, 0, ""); static void cs_init (void *); static int cs_ioctl (struct ifnet *, u_long, caddr_t); static void cs_start (struct ifnet *); static void cs_stop (struct cs_softc *); static void cs_reset (struct cs_softc *); static void cs_watchdog (struct ifnet *); static int cs_mediachange (struct ifnet *); static void cs_mediastatus (struct ifnet *, struct ifmediareq *); static int cs_mediaset (struct cs_softc *, int); static void cs_write_mbufs(struct cs_softc*, struct mbuf*); static void cs_xmit_buf(struct cs_softc*); static int cs_get_packet(struct cs_softc*); static void cs_setmode(struct cs_softc*); static int get_eeprom_data(struct cs_softc *sc, int, int, int *); static int get_eeprom_cksum(int, int, int *); static int wait_eeprom_ready( struct cs_softc *); static void control_dc_dc( struct cs_softc *, int ); static int send_test_pkt( struct cs_softc * ); static int enable_tp(struct cs_softc *); static int enable_aui(struct cs_softc *); static int enable_bnc(struct cs_softc *); static int cs_duplex_auto(struct cs_softc *); devclass_t cs_devclass; static int get_eeprom_data( struct cs_softc *sc, int off, int len, int *buffer) { int i; #ifdef CS_DEBUG printf(CS_NAME":EEPROM data from %x for %x:\n", off,len); #endif for (i=0;iadapter_cnf & A_CNF_DC_DC_POLARITY)!=0) ^ on_not_off) self_control |= HCB1; else self_control &= ~HCB1; cs_writereg(sc, PP_SelfCTL, self_control); DELAY( 500000 ); } static int cs_duplex_auto(struct cs_softc *sc) { int i, error=0; cs_writereg(sc, PP_AutoNegCTL, RE_NEG_NOW | ALLOW_FDX | AUTO_NEG_ENABLE); for (i=0; cs_readreg(sc, PP_AutoNegST) & AUTO_NEG_BUSY; i++) { if (i > 40000) { if_printf(&sc->arpcom.ac_if, "full/half duplex auto negotiation timeout\n"); error = ETIMEDOUT; break; } DELAY(1000); } DELAY( 1000000 ); return error; } static int enable_tp(struct cs_softc *sc) { cs_writereg(sc, PP_LineCTL, sc->line_ctl & ~AUI_ONLY); control_dc_dc(sc, 0); DELAY( 150000 ); if ((cs_readreg(sc, PP_LineST) & LINK_OK)==0) { if_printf(&sc->arpcom.ac_if, "failed to enable TP\n"); return EINVAL; } return 0; } /* * XXX This was rewritten from Linux driver without any tests. */ static int send_test_pkt(struct cs_softc *sc) { char test_packet[] = { 0,0,0,0,0,0, 0,0,0,0,0,0, 0, 46, /* A 46 in network order */ 0, 0, /* DSAP=0 & SSAP=0 fields */ 0xf3, 0 /* Control (Test Req + P bit set) */ }; int i; u_char ether_address_backup[ETHER_ADDR_LEN]; for (i = 0; i < ETHER_ADDR_LEN; i++) { ether_address_backup[i] = sc->arpcom.ac_enaddr[i]; } cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_TX_ON); bcopy(test_packet, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); bcopy(test_packet+ETHER_ADDR_LEN, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); cs_outw(sc, TX_CMD_PORT, sc->send_cmd); cs_outw(sc, TX_LEN_PORT, sizeof(test_packet)); /* Wait for chip to allocate memory */ DELAY(50000); if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) { for (i = 0; i < ETHER_ADDR_LEN; i++) { sc->arpcom.ac_enaddr[i] = ether_address_backup[i]; } return 0; } outsw(sc->nic_addr + TX_FRAME_PORT, test_packet, sizeof(test_packet)); DELAY(30000); if ((cs_readreg(sc, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) { for (i = 0; i < ETHER_ADDR_LEN; i++) { sc->arpcom.ac_enaddr[i] = ether_address_backup[i]; } return 1; } for (i = 0; i < ETHER_ADDR_LEN; i++) { sc->arpcom.ac_enaddr[i] = ether_address_backup[i]; } return 0; } /* * XXX This was rewritten from Linux driver without any tests. */ static int enable_aui(struct cs_softc *sc) { control_dc_dc(sc, 0); cs_writereg(sc, PP_LineCTL, (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY); if (!send_test_pkt(sc)) { if_printf(&sc->arpcom.ac_if, "failed to enable AUI\n"); return EINVAL; } return 0; } /* * XXX This was rewritten from Linux driver without any tests. */ static int enable_bnc(struct cs_softc *sc) { control_dc_dc(sc, 1); cs_writereg(sc, PP_LineCTL, (sc->line_ctl & ~AUTO_AUI_10BASET) | AUI_ONLY); if (!send_test_pkt(sc)) { if_printf(&sc->arpcom.ac_if, "failed to enable BNC\n"); return EINVAL; } return 0; } int cs_cs89x0_probe(device_t dev) { int i; int error; u_long irq, junk; struct cs_softc *sc = device_get_softc(dev); unsigned rev_type = 0; u_int16_t id; char chip_revision; int eeprom_buff[CHKSUM_LEN]; int chip_type, pp_isaint, pp_isadma; error = cs_alloc_port(dev, 0, CS_89x0_IO_PORTS); if (error) return (error); sc->nic_addr = rman_get_start(sc->port_res); if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) { /* Chip not detected. Let's try to reset it */ if (bootverbose) device_printf(dev, "trying to reset the chip.\n"); cs_outw(sc, ADD_PORT, PP_SelfCTL); i = cs_inw(sc, DATA_PORT); cs_outw(sc, ADD_PORT, PP_SelfCTL); cs_outw(sc, DATA_PORT, i | POWER_ON_RESET); if ((cs_inw(sc, ADD_PORT) & ADD_MASK) != ADD_SIG) return (ENXIO); } for (i = 0; i < 10000; i++) { id = cs_readreg(sc, PP_ChipID); if (id == CHIP_EISA_ID_SIG) break; } if (i == 10000) return (ENXIO); rev_type = cs_readreg(sc, PRODUCT_ID_ADD); chip_type = rev_type & ~REVISON_BITS; chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A'; sc->chip_type = chip_type; if(chip_type==CS8900) { pp_isaint = PP_CS8900_ISAINT; pp_isadma = PP_CS8900_ISADMA; sc->send_cmd = TX_CS8900_AFTER_ALL; } else { pp_isaint = PP_CS8920_ISAINT; pp_isadma = PP_CS8920_ISADMA; sc->send_cmd = TX_CS8920_AFTER_ALL; } /* * Clear some fields so that fail of EEPROM will left them clean */ sc->auto_neg_cnf = 0; sc->adapter_cnf = 0; sc->isa_config = 0; /* * If no interrupt specified (or "?"), use what the board tells us. */ error = bus_get_resource(dev, SYS_RES_IRQ, 0, &irq, &junk); /* * Get data from EEPROM */ if((cs_readreg(sc, PP_SelfST) & EEPROM_PRESENT) == 0) { device_printf(dev, "No EEPROM, assuming defaults.\n"); } else { if (get_eeprom_data(sc,START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) { device_printf(dev, "EEPROM read failed, " "assuming defaults.\n"); } else { if (get_eeprom_cksum(START_EEPROM_DATA,CHKSUM_LEN, eeprom_buff)<0) { device_printf(dev, "EEPROM cheksum bad, " "assuming defaults.\n"); } else { sc->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET/2]; sc->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET/2]; sc->isa_config = eeprom_buff[ISA_CNF_OFFSET/2]; for (i=0; iarpcom.ac_enaddr[i*2]= eeprom_buff[i]; sc->arpcom.ac_enaddr[i*2+1]= eeprom_buff[i] >> 8; } /* * If no interrupt specified (or "?"), * use what the board tells us. */ if (error) { irq = sc->isa_config & INT_NO_MASK; if (chip_type==CS8900) { switch(irq) { case 0: irq=10; error=0; break; case 1: irq=11; error=0; break; case 2: irq=12; error=0; break; case 3: irq=5; error=0; break; default: device_printf(dev, "invalid irq in EEPROM.\n"); error=EINVAL; } } else { if (irq>CS8920_NO_INTS) { device_printf(dev, "invalid irq in EEPROM.\n"); error=EINVAL; } else { error=0; } } if (!error) bus_set_resource(dev, SYS_RES_IRQ, 0, irq, 1); } } } } if (!error) { if (chip_type == CS8900) { switch(irq) { case 5: irq = 3; break; case 10: irq = 0; break; case 11: irq = 1; break; case 12: irq = 2; break; default: error=EINVAL; } } else { if (irq > CS8920_NO_INTS) { error = EINVAL; } } } if (!error) { cs_writereg(sc, pp_isaint, irq); } else { device_printf(dev, "Unknown or invalid irq\n"); return (ENXIO); } /* * Temporary disabled * if (drq>0) cs_writereg(sc, pp_isadma, drq); else { device_printf(dev, "incorrect drq\n",); return 0; } */ if (bootverbose) device_printf(dev, "CS89%c0%s rev %c media%s%s%s\n", chip_type==CS8900 ? '0' : '2', chip_type==CS8920M ? "M" : "", chip_revision, (sc->adapter_cnf & A_CNF_10B_T) ? " TP" : "", (sc->adapter_cnf & A_CNF_AUI) ? " AUI" : "", (sc->adapter_cnf & A_CNF_10B_2) ? " BNC" : ""); if ((sc->adapter_cnf & A_CNF_EXTND_10B_2) && (sc->adapter_cnf & A_CNF_LOW_RX_SQUELCH)) sc->line_ctl = LOW_RX_SQUELCH; else sc->line_ctl = 0; return 0; } /* * Allocate a port resource with the given resource id. */ int cs_alloc_port(device_t dev, int rid, int size) { struct cs_softc *sc = device_get_softc(dev); struct resource *res; res = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid, 0ul, ~0ul, size, RF_ACTIVE); if (res) { sc->port_rid = rid; sc->port_res = res; sc->port_used = size; return (0); } else { return (ENOENT); } } /* * Allocate a memory resource with the given resource id. */ int cs_alloc_memory(device_t dev, int rid, int size) { struct cs_softc *sc = device_get_softc(dev); struct resource *res; res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0ul, ~0ul, size, RF_ACTIVE); if (res) { sc->mem_rid = rid; sc->mem_res = res; sc->mem_used = size; return (0); } else { return (ENOENT); } } /* * Allocate an irq resource with the given resource id. */ int cs_alloc_irq(device_t dev, int rid, int flags) { struct cs_softc *sc = device_get_softc(dev); struct resource *res; res = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0ul, ~0ul, 1, (RF_ACTIVE | flags)); if (res) { sc->irq_rid = rid; sc->irq_res = res; return (0); } else { return (ENOENT); } } /* * Release all resources */ void cs_release_resources(device_t dev) { struct cs_softc *sc = device_get_softc(dev); if (sc->port_res) { bus_release_resource(dev, SYS_RES_IOPORT, sc->port_rid, sc->port_res); sc->port_res = 0; } if (sc->mem_res) { bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem_res); sc->mem_res = 0; } if (sc->irq_res) { bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq_res); sc->irq_res = 0; } } /* * Install the interface into kernel networking data structures */ int cs_attach(struct cs_softc *sc, int unit, int flags) { int media=0; struct ifnet *ifp = &(sc->arpcom.ac_if); cs_stop( sc ); if (!ifp->if_name) { ifp->if_softc=sc; ifp->if_unit=unit; ifp->if_name="cs"; ifp->if_output=ether_output; ifp->if_start=cs_start; ifp->if_ioctl=cs_ioctl; ifp->if_watchdog=cs_watchdog; ifp->if_init=cs_init; ifp->if_snd.ifq_maxlen= IFQ_MAXLEN; /* * MIB DATA */ /* ifp->if_linkmib=&sc->mibdata; ifp->if_linkmiblen=sizeof sc->mibdata; */ ifp->if_flags=(IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST ); /* * this code still in progress (DMA support) * sc->recv_ring=malloc(CS_DMA_BUFFER_SIZE<<1, M_DEVBUF, M_NOWAIT); if (sc->recv_ring == NULL) { log(LOG_ERR,CS_NAME "%d: Couldn't allocate memory for NIC\n", unit); return(0); } if ((sc->recv_ring-(sc->recv_ring & 0x1FFFF)) < (128*1024-CS_DMA_BUFFER_SIZE)) sc->recv_ring+=16*1024; */ sc->buffer=malloc(ETHER_MAX_LEN-ETHER_CRC_LEN,M_DEVBUF,M_NOWAIT); if (sc->buffer == NULL) { if_printf(ifp, "Couldn't allocate memory for NIC\n"); return(0); } /* * Initialize the media structures. */ ifmedia_init(&sc->media, 0, cs_mediachange, cs_mediastatus); if (sc->adapter_cnf & A_CNF_10B_T) { ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T, 0, NULL); if (sc->chip_type != CS8900) { ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); ifmedia_add(&sc->media, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); } } if (sc->adapter_cnf & A_CNF_10B_2) ifmedia_add(&sc->media, IFM_ETHER|IFM_10_2, 0, NULL); if (sc->adapter_cnf & A_CNF_AUI) ifmedia_add(&sc->media, IFM_ETHER|IFM_10_5, 0, NULL); if (sc->adapter_cnf & A_CNF_MEDIA) ifmedia_add(&sc->media, IFM_ETHER|IFM_AUTO, 0, NULL); /* Set default media from EEPROM */ switch (sc->adapter_cnf & A_CNF_MEDIA_TYPE) { case A_CNF_MEDIA_AUTO: media = IFM_ETHER|IFM_AUTO; break; case A_CNF_MEDIA_10B_T: media = IFM_ETHER|IFM_10_T; break; case A_CNF_MEDIA_10B_2: media = IFM_ETHER|IFM_10_2; break; case A_CNF_MEDIA_AUI: media = IFM_ETHER|IFM_10_5; break; default: if_printf(ifp, "adapter has no media\n"); } ifmedia_set(&sc->media, media); cs_mediaset(sc, media); ether_ifattach(ifp, sc->arpcom.ac_enaddr); } if (bootverbose) if_printf(ifp, "ethernet address %6D\n", sc->arpcom.ac_enaddr, ":"); return (0); } /* * Initialize the board */ static void cs_init(void *xsc) { struct cs_softc *sc=(struct cs_softc *)xsc; struct ifnet *ifp = &sc->arpcom.ac_if; int i, s, rx_cfg; /* address not known */ if (TAILQ_EMPTY(&ifp->if_addrhead)) /* unlikely? XXX */ return; /* * reset whatchdog timer */ ifp->if_timer=0; sc->buf_len = 0; s=splimp(); /* * Hardware initialization of cs */ /* Enable receiver and transmitter */ cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); /* Configure the receiver mode */ cs_setmode(sc); /* * This defines what type of frames will cause interrupts * Bad frames should generate interrupts so that the driver * could track statistics of discarded packets */ rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL | RX_RUNT_ENBL | RX_EXTRA_DATA_ENBL; if (sc->isa_config & STREAM_TRANSFER) rx_cfg |= RX_STREAM_ENBL; cs_writereg(sc, PP_RxCFG, rx_cfg); cs_writereg(sc, PP_TxCFG, TX_LOST_CRS_ENBL | TX_SQE_ERROR_ENBL | TX_OK_ENBL | TX_LATE_COL_ENBL | TX_JBR_ENBL | TX_ANY_COL_ENBL | TX_16_COL_ENBL); cs_writereg(sc, PP_BufCFG, READY_FOR_TX_ENBL | RX_MISS_COUNT_OVRFLOW_ENBL | TX_COL_COUNT_OVRFLOW_ENBL | TX_UNDERRUN_ENBL /*| RX_DMA_ENBL*/); /* Write MAC address into IA filter */ for (i=0; iarpcom.ac_enaddr[i * 2] | (sc->arpcom.ac_enaddr[i * 2 + 1] << 8) ); /* * Now enable everything */ /* #ifdef CS_USE_64K_DMA cs_writereg(sc, PP_BusCTL, ENABLE_IRQ | RX_DMA_SIZE_64K); #else cs_writereg(sc, PP_BusCTL, ENABLE_IRQ); #endif */ cs_writereg(sc, PP_BusCTL, ENABLE_IRQ); /* * Set running and clear output active flags */ sc->arpcom.ac_if.if_flags |= IFF_RUNNING; sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE; /* * Start sending process */ cs_start(ifp); (void) splx(s); } /* * Get the packet from the board and send it to the upper layer. */ static int cs_get_packet(struct cs_softc *sc) { struct ifnet *ifp = &(sc->arpcom.ac_if); int iobase = sc->nic_addr, status, length; struct ether_header *eh; struct mbuf *m; #ifdef CS_DEBUG int i; #endif status = cs_inw(sc, RX_FRAME_PORT); length = cs_inw(sc, RX_FRAME_PORT); #ifdef CS_DEBUG if_printf(ifp, "rcvd: stat %x, len %d\n", status, length); #endif if (!(status & RX_OK)) { #ifdef CS_DEBUG if_printf(ifp, "bad pkt stat %x\n", status); #endif ifp->if_ierrors++; return -1; } MGETHDR(m, M_DONTWAIT, MT_DATA); if (m==NULL) return -1; if (length > MHLEN) { MCLGET(m, M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(m); return -1; } } /* Initialize packet's header info */ m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = length; m->m_len = length; /* Get the data */ insw(iobase + RX_FRAME_PORT, m->m_data, (length+1)>>1); eh = mtod(m, struct ether_header *); #ifdef CS_DEBUG for (i=0;im_data+i))); printf( "\n" ); #endif if (status & (RX_IA | RX_BROADCAST) || (ifp->if_flags & IFF_MULTICAST && status & RX_HASHED)) { /* Feed the packet to the upper layer */ (*ifp->if_input)(ifp, m); ifp->if_ipackets++; if (length==ETHER_MAX_LEN-ETHER_CRC_LEN) DELAY( cs_recv_delay ); } else { m_freem(m); } return 0; } /* * Handle interrupts */ void csintr(void *arg) { struct cs_softc *sc = (struct cs_softc*) arg; struct ifnet *ifp = &(sc->arpcom.ac_if); int status; #ifdef CS_DEBUG if_printf(ifp, "Interrupt.\n"); #endif while ((status=cs_inw(sc, ISQ_PORT))) { #ifdef CS_DEBUG if_printf(ifp, "from ISQ: %04x\n", status); #endif switch (status & ISQ_EVENT_MASK) { case ISQ_RECEIVER_EVENT: cs_get_packet(sc); break; case ISQ_TRANSMITTER_EVENT: if (status & TX_OK) ifp->if_opackets++; else ifp->if_oerrors++; ifp->if_flags &= ~IFF_OACTIVE; ifp->if_timer = 0; break; case ISQ_BUFFER_EVENT: if (status & READY_FOR_TX) { ifp->if_flags &= ~IFF_OACTIVE; ifp->if_timer = 0; } if (status & TX_UNDERRUN) { ifp->if_flags &= ~IFF_OACTIVE; ifp->if_timer = 0; ifp->if_oerrors++; } break; case ISQ_RX_MISS_EVENT: ifp->if_ierrors+=(status>>6); break; case ISQ_TX_COL_EVENT: ifp->if_collisions+=(status>>6); break; } } if (!(ifp->if_flags & IFF_OACTIVE)) { cs_start(ifp); } } /* * Save the data in buffer */ static void cs_write_mbufs( struct cs_softc *sc, struct mbuf *m ) { int len; struct mbuf *mp; unsigned char *data, *buf; for (mp=m, buf=sc->buffer, sc->buf_len=0; mp != NULL; mp=mp->m_next) { len = mp->m_len; /* * Ignore empty parts */ if (!len) continue; /* * Find actual data address */ data = mtod(mp, caddr_t); bcopy((caddr_t) data, (caddr_t) buf, len); buf += len; sc->buf_len += len; } } static void cs_xmit_buf( struct cs_softc *sc ) { outsw(sc->nic_addr+TX_FRAME_PORT, sc->buffer, (sc->buf_len+1)>>1); sc->buf_len = 0; } static void cs_start(struct ifnet *ifp) { int s, length; struct mbuf *m, *mp; struct cs_softc *sc = ifp->if_softc; s = splimp(); for (;;) { if (sc->buf_len) length = sc->buf_len; else { IF_DEQUEUE( &ifp->if_snd, m ); if (m==NULL) { (void) splx(s); return; } for (length=0, mp=m; mp != NULL; mp=mp->m_next) length += mp->m_len; /* Skip zero-length packets */ if (length == 0) { m_freem(m); continue; } cs_write_mbufs(sc, m); BPF_MTAP(ifp, m); m_freem(m); } /* * Issue a SEND command */ cs_outw(sc, TX_CMD_PORT, sc->send_cmd); cs_outw(sc, TX_LEN_PORT, length ); /* * If there's no free space in the buffer then leave * this packet for the next time: indicate output active * and return. */ if (!(cs_readreg(sc, PP_BusST) & READY_FOR_TX_NOW)) { ifp->if_timer = sc->buf_len; (void) splx(s); ifp->if_flags |= IFF_OACTIVE; return; } cs_xmit_buf(sc); /* * Set the watchdog timer in case we never hear * from board again. (I don't know about correct * value for this timeout) */ ifp->if_timer = length; (void) splx(s); ifp->if_flags |= IFF_OACTIVE; return; } } /* * Stop everything on the interface */ static void cs_stop(struct cs_softc *sc) { int s = splimp(); cs_writereg(sc, PP_RxCFG, 0); cs_writereg(sc, PP_TxCFG, 0); cs_writereg(sc, PP_BufCFG, 0); cs_writereg(sc, PP_BusCTL, 0); sc->arpcom.ac_if.if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); sc->arpcom.ac_if.if_timer = 0; (void) splx(s); } /* * Reset the interface */ static void cs_reset(struct cs_softc *sc) { cs_stop(sc); cs_init(sc); } static void cs_setmode(struct cs_softc *sc) { struct ifnet *ifp = &(sc->arpcom.ac_if); int rx_ctl; /* Stop the receiver while changing filters */ cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~SERIAL_RX_ON); if (ifp->if_flags & IFF_PROMISC) { /* Turn on promiscuous mode. */ rx_ctl = RX_OK_ACCEPT | RX_PROM_ACCEPT; } else { if (ifp->if_flags & IFF_MULTICAST) { /* Allow receiving frames with multicast addresses */ rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | RX_OK_ACCEPT | RX_MULTCAST_ACCEPT; /* * Here the reconfiguration of chip's multicast * filters should be done but I've no idea about * hash transformation in this chip. If you can * add this code or describe me the transformation * I'd be very glad. */ } else { /* * Receive only good frames addressed for us and * good broadcasts. */ rx_ctl = RX_IA_ACCEPT | RX_BROADCAST_ACCEPT | RX_OK_ACCEPT; } } /* Set up the filter */ cs_writereg(sc, PP_RxCTL, RX_DEF_ACCEPT | rx_ctl); /* Turn on receiver */ cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON); } static int cs_ioctl(register struct ifnet *ifp, u_long command, caddr_t data) { struct cs_softc *sc=ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; int s,error=0; #ifdef CS_DEBUG if_printf(ifp, "ioctl(%lx)\n", command); #endif s=splimp(); switch (command) { case SIOCSIFFLAGS: /* * Switch interface state between "running" and * "stopped", reflecting the UP flag. */ if (sc->arpcom.ac_if.if_flags & IFF_UP) { if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)==0) { cs_init(sc); } } else { if ((sc->arpcom.ac_if.if_flags & IFF_RUNNING)!=0) { cs_stop(sc); } } /* * Promiscuous and/or multicast flags may have changed, * so reprogram the multicast filter and/or receive mode. * * See note about multicasts in cs_setmode */ cs_setmode(sc); break; case SIOCADDMULTI: case SIOCDELMULTI: /* * Multicast list has changed; set the hardware filter * accordingly. * * See note about multicasts in cs_setmode */ cs_setmode(sc); error = 0; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->media, command); break; default: ether_ioctl(ifp, command, data); break; } (void) splx(s); return error; } /* * Device timeout/watchdog routine. Entered if the device neglects to * generate an interrupt after a transmit has been started on it. */ static void cs_watchdog(struct ifnet *ifp) { struct cs_softc *sc = ifp->if_softc; ifp->if_oerrors++; log(LOG_ERR, CS_NAME"%d: device timeout\n", ifp->if_unit); /* Reset the interface */ if (ifp->if_flags & IFF_UP) cs_reset(sc); else cs_stop(sc); } static int cs_mediachange(struct ifnet *ifp) { struct cs_softc *sc = ifp->if_softc; struct ifmedia *ifm = &sc->media; if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) return EINVAL; return cs_mediaset(sc, ifm->ifm_media); } static void cs_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) { int line_status; struct cs_softc *sc = ifp->if_softc; ifmr->ifm_active = IFM_ETHER; line_status = cs_readreg(sc, PP_LineST); if (line_status & TENBASET_ON) { ifmr->ifm_active |= IFM_10_T; if (sc->chip_type != CS8900) { if (cs_readreg(sc, PP_AutoNegST) & FDX_ACTIVE) ifmr->ifm_active |= IFM_FDX; if (cs_readreg(sc, PP_AutoNegST) & HDX_ACTIVE) ifmr->ifm_active |= IFM_HDX; } ifmr->ifm_status = IFM_AVALID; if (line_status & LINK_OK) ifmr->ifm_status |= IFM_ACTIVE; } else { if (line_status & AUI_ON) { cs_writereg(sc, PP_SelfCTL, cs_readreg(sc, PP_SelfCTL) | HCB1_ENBL); if (((sc->adapter_cnf & A_CNF_DC_DC_POLARITY)!=0)^ (cs_readreg(sc, PP_SelfCTL) & HCB1)) ifmr->ifm_active |= IFM_10_2; else ifmr->ifm_active |= IFM_10_5; } } } static int cs_mediaset(struct cs_softc *sc, int media) { int error; /* Stop the receiver & transmitter */ cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) & ~(SERIAL_RX_ON | SERIAL_TX_ON)); #ifdef CS_DEBUG if_printf(&sc->arpcom.ac_if, "cs_setmedia(%x)\n", media); #endif switch (IFM_SUBTYPE(media)) { default: case IFM_AUTO: if ((error=enable_tp(sc))==0) error = cs_duplex_auto(sc); else if ((error=enable_bnc(sc)) != 0) error = enable_aui(sc); break; case IFM_10_T: if ((error=enable_tp(sc)) != 0) break; if (media & IFM_FDX) cs_duplex_full(sc); else if (media & IFM_HDX) cs_duplex_half(sc); else error = cs_duplex_auto(sc); break; case IFM_10_2: error = enable_bnc(sc); break; case IFM_10_5: error = enable_aui(sc); break; } /* * Turn the transmitter & receiver back on */ cs_writereg(sc, PP_LineCTL, cs_readreg(sc, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON); return error; }