/* $OpenBSD: if_ex.c,v 1.2 1997/11/09 22:21:22 gene Exp $ */ /* * Copyright (c) 1997, Donald A. Schmidt * Copyright (c) 1996, Javier Martín Rueda (jmrueda@diatel.upm.es) * 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. */ /* * Intel EtherExpress Pro/10 Ethernet driver * * Revision history: * * 30-Oct-1996: first beta version. Inet and BPF supported, but no multicast. */ #include "ex.h" #if NEX > 0 #include "bpfilter.h" #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #ifdef IPX #include #include #endif #ifdef NS #include #include #endif #if NBPFILTER > 0 #include #endif #include #include #include #include #ifdef EXDEBUG #define Start_End 1 #define Rcvd_Pkts 2 #define Sent_Pkts 4 #define Status 8 static int debug_mask = 0; static int exintr_count = 0; #define DODEBUG(level, action) if (level & debug_mask) action #else #define DODEBUG(level, action) #endif #define Conn_BNC 1 #define Conn_TPE 2 #define Conn_AUI 3 struct ex_softc { struct arpcom arpcom; /* Ethernet common data */ int iobase; /* I/O base address. */ u_short connector; /* Connector type. */ u_short irq_no; /* IRQ number. */ u_int mem_size; /* Total memory size, in bytes. */ u_int rx_mem_size; /* Rx memory size (by default, first 3/4 of total memory). */ u_int rx_lower_limit, rx_upper_limit; /* Lower and upper limits of receive buffer. */ u_int rx_head; /* Head of receive ring buffer. */ u_int tx_mem_size; /* Tx memory size (by default, last quarter of total memory). */ u_int tx_lower_limit, tx_upper_limit; /* Lower and upper limits of transmit buffer. */ u_int tx_head, tx_tail; /* Head and tail of transmit ring buffer. */ u_int tx_last; /* Pointer to beginning of last frame in the chain. */ bus_space_tag_t sc_iot; /* ISA i/o space tag */ bus_space_handle_t sc_ioh; /* ISA i/o space handle */ void *sc_ih; /* Device interrupt handler */ }; /* static struct ex_softc ex_sc[NEX]; XXX would it be better to malloc(3) the memory? */ static char irq2eemap[] = { -1, -1, 0, 1, -1, 2, -1, -1, -1, 0, 3, 4, -1, -1, -1, -1 }; static u_char ee2irqmap[] = { 9, 3, 5, 10, 11, 0, 0, 0 }; static int ex_probe __P((struct device *, void *, void *)); static void ex_attach __P((struct device *, struct device *, void *)); static void ex_init __P((struct ex_softc *)); static void ex_start __P((struct ifnet *)); static void ex_stop __P((struct ex_softc *)); static int ex_ioctl __P((struct ifnet *, u_long, caddr_t)); static void ex_reset __P((struct ex_softc *)); static void ex_watchdog __P((struct ifnet *)); static u_short eeprom_read __P((struct ex_softc *, int)); static int look_for_card __P((struct isa_attach_args *, struct ex_softc *sc)); static int exintr __P((void *)); static void ex_tx_intr __P((struct ex_softc *)); static void ex_rx_intr __P((struct ex_softc *)); struct cfattach ex_ca = { sizeof(struct ex_softc), ex_probe, ex_attach }; struct cfdriver ex_cd = { NULL, "ex", DV_IFNET }; #define BANK_SEL(X) bus_space_write_1(sc->sc_iot, sc->sc_ioh, CMD_REG, \ (X)) #define ISA_GET(offset) bus_space_read_1(sc->sc_iot, sc->sc_ioh, (offset)) #define ISA_PUT(offset, value) bus_space_write_1(sc->sc_iot, sc->sc_ioh, \ (offset), (value)) #define ISA_GET_2(offset) bus_space_read_2(sc->sc_iot, sc->sc_ioh, \ (offset)) #define ISA_PUT_2(offset, value) bus_space_write_2(sc->sc_iot, sc->sc_ioh, \ (offset), (value)) #define ISA_GET_2_MULTI(offset, addr, count) bus_space_read_multi_2( \ sc->sc_iot, sc->sc_ioh, (offset), (addr), (count)) #define ISA_PUT_2_MULTI(offset, addr, count) bus_space_write_multi_2( \ sc->sc_iot, sc->sc_ioh, (offset), (addr), (count)) static int look_for_card(ia, sc) struct isa_attach_args *ia; struct ex_softc *sc; { int count1, count2; sc->sc_ioh = ia->ia_iot; if(bus_space_map(ia->ia_iot, ia->ia_iobase, EX_IOSIZE, 0, &sc->sc_ioh)) return(0); /* * Check for the i82595 signature, and check that the round robin * counter actually advances. */ if (((count1 = ISA_GET(ID_REG)) & Id_Mask) != Id_Sig) return(0); count2 = ISA_GET(ID_REG); count2 = ISA_GET(ID_REG); count2 = ISA_GET(ID_REG); if ((count2 & Counter_bits) == ((count1 + 0xc0) & Counter_bits)) return(1); else { bus_space_unmap(sc->sc_iot, sc->sc_ioh, EX_IOSIZE); return(0); } } int ex_probe(parent, match, aux) struct device *parent; void *match, *aux; { struct ex_softc *sc = match; struct isa_attach_args *ia = aux; int iobase; u_short eaddr_tmp; int tmp; DODEBUG(Start_End, printf("ex_probe: start\n");); iobase = ia->ia_iobase; if ((iobase >= 0x200) && (iobase <= 0x3a0)) { if (look_for_card(ia, sc) == 0) return(0); } else return(0); ia->ia_iosize = EX_IOSIZE; /* ia->ia_iobase = iobase; */ /* * Reset the card. */ ISA_PUT(CMD_REG, Reset_CMD); delay(200); /* * Fill in several fields of the softc structure: * - I/O base address. * - Hardware Ethernet address. * - IRQ number (if not supplied in config file, read it from * EEPROM). * - Connector type. */ sc->iobase = iobase; eaddr_tmp = eeprom_read(sc, EE_Eth_Addr_Lo); sc->arpcom.ac_enaddr[5] = eaddr_tmp & 0xff; sc->arpcom.ac_enaddr[4] = eaddr_tmp >> 8; eaddr_tmp = eeprom_read(sc, EE_Eth_Addr_Mid); sc->arpcom.ac_enaddr[3] = eaddr_tmp & 0xff; sc->arpcom.ac_enaddr[2] = eaddr_tmp >> 8; eaddr_tmp = eeprom_read(sc, EE_Eth_Addr_Hi); sc->arpcom.ac_enaddr[1] = eaddr_tmp & 0xff; sc->arpcom.ac_enaddr[0] = eaddr_tmp >> 8; tmp = eeprom_read(sc, EE_IRQ_No) & IRQ_No_Mask; if (ia->ia_irq > 0) { if (ee2irqmap[tmp] != ia->ia_irq) printf("ex: WARING: board's EEPROM is configured for IRQ %d, using %d\n", ee2irqmap[tmp], ia->ia_irq); sc->irq_no = ia->ia_irq; } else { sc->irq_no = ee2irqmap[tmp]; ia->ia_irq = sc->irq_no; } if (sc->irq_no == 0) { printf("ex: invalid IRQ.\n"); return(0); } BANK_SEL(Bank2_Sel); tmp = ISA_GET(REG3); if (tmp & TPE_bit) sc->connector = Conn_TPE; else if (tmp & BNC_bit) sc->connector = Conn_BNC; else sc->connector = Conn_AUI; sc->mem_size = CARD_RAM_SIZE; /* XXX This should be read from the card itself. */ BANK_SEL(Bank0_Sel); DODEBUG(Start_End, printf("ex_probe: finish\n");); return(1); } void ex_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct ex_softc *sc = (void *)self; struct isa_attach_args *ia = aux; struct ifnet *ifp = &sc->arpcom.ac_if; /* struct ifaddr *ifa; XXX what are these for? */ /* struct sockaddr_dl *sdl; */ DODEBUG(Start_End, printf("ex_attach: start\n");); /* * Initialize the ifnet structure. */ ifp->if_softc = sc; bcopy(self->dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_output = ether_output; ifp->if_start = ex_start; ifp->if_ioctl = ex_ioctl; ifp->if_watchdog = ex_watchdog; ifp->if_mtu = ETHERMTU; ifp->if_flags = IFF_SIMPLEX | IFF_BROADCAST; /* XXX not done yet. | IFF_MULTICAST */ /* * Attach the interface. */ if_attach(ifp); ether_ifattach(ifp); printf(": address %s, connecter ", ether_sprintf(sc->arpcom.ac_enaddr)); switch(sc->connector) { case Conn_TPE: printf("TPE\n"); break; case Conn_BNC: printf("BNC\n"); break; case Conn_AUI: printf("AUI\n"); break; default: printf("???\n"); } /* * If BPF is in the kernel, call the attach for it */ #if NBPFILTER > 0 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_NET, exintr, sc, self->dv_xname); ex_init(sc); DODEBUG(Start_End, printf("ex_attach: finish\n");); } void ex_init(sc) struct ex_softc *sc; { struct ifnet *ifp = &sc->arpcom.ac_if; int s, i; unsigned short temp_reg; DODEBUG(Start_End, printf("ex_init: start\n");); if (ifp->if_addrlist.tqh_first == NULL) return; s = splimp(); sc->arpcom.ac_if.if_timer = 0; /* * Load the ethernet address into the card. */ BANK_SEL(Bank2_Sel); temp_reg = ISA_GET(EEPROM_REG); if (temp_reg & Trnoff_Enable) ISA_PUT(EEPROM_REG, temp_reg & ~Trnoff_Enable); for (i = 0; i < ETHER_ADDR_LEN; i++) ISA_PUT(I_ADDR_REG0 + i, sc->arpcom.ac_enaddr[i]); /* * - Setup transmit chaining and discard bad received frames. * - Match broadcast. * - Clear test mode. * - Set receiving mode. * - Set IRQ number. */ ISA_PUT(REG1, ISA_GET(REG1) | Tx_Chn_Int_Md | Tx_Chn_ErStp | Disc_Bad_Fr); ISA_PUT(REG2, ISA_GET(REG2) | No_SA_Ins | RX_CRC_InMem); ISA_PUT(REG3, (ISA_GET(REG3) & 0x3f)); BANK_SEL(Bank1_Sel); ISA_PUT(INT_NO_REG, (ISA_GET(INT_NO_REG) & 0xf8) | irq2eemap[sc->irq_no]); /* * Divide the available memory in the card into rcv and xmt buffers. * By default, I use the first 3/4 of the memory for the rcv buffer, * and the remaining 1/4 of the memory for the xmt buffer. */ sc->rx_mem_size = sc->mem_size * 3 / 4; sc->tx_mem_size = sc->mem_size - sc->rx_mem_size; sc->rx_lower_limit = 0x0000; sc->rx_upper_limit = sc->rx_mem_size - 2; sc->tx_lower_limit = sc->rx_mem_size; sc->tx_upper_limit = sc->mem_size - 2; ISA_PUT(RCV_LOWER_LIMIT_REG, sc->rx_lower_limit >> 8); ISA_PUT(RCV_UPPER_LIMIT_REG, sc->rx_upper_limit >> 8); ISA_PUT(XMT_LOWER_LIMIT_REG, sc->tx_lower_limit >> 8); ISA_PUT(XMT_UPPER_LIMIT_REG, sc->tx_upper_limit >> 8); /* * Enable receive and transmit interrupts, and clear any pending int. */ ISA_PUT(REG1, ISA_GET(REG1) | TriST_INT); BANK_SEL(Bank0_Sel); ISA_PUT(MASK_REG, All_Int & ~(Rx_Int | Tx_Int)); ISA_PUT(STATUS_REG, All_Int); /* * Initialize receive and transmit ring buffers. */ ISA_PUT_2(RCV_BAR, sc->rx_lower_limit); sc->rx_head = sc->rx_lower_limit; ISA_PUT_2(RCV_STOP_REG, sc->rx_upper_limit | 0xfe); ISA_PUT_2(XMT_BAR, sc->tx_lower_limit); sc->tx_head = sc->tx_tail = sc->tx_lower_limit; ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; DODEBUG(Status, printf("OIDLE init\n");); /* * Final reset of the board, and enable operation. */ ISA_PUT(CMD_REG, Sel_Reset_CMD); delay(2); ISA_PUT(CMD_REG, Rcv_Enable_CMD); ex_start(ifp); splx(s); DODEBUG(Start_End, printf("ex_init: finish\n");); } void ex_start(ifp) struct ifnet *ifp; { register struct ex_softc *sc = ifp->if_softc; int i, s, len, data_len, avail, dest, next; unsigned char tmp16[2]; struct mbuf *opkt; register struct mbuf *m; DODEBUG(Start_End, printf("ex_start: start\n");); s = splimp(); /* * Main loop: send outgoing packets to network card until there are no * more packets left, or the card cannot accept any more yet. */ while (((opkt = ifp->if_snd.ifq_head) != NULL) && !(ifp->if_flags & IFF_OACTIVE)) { /* * Ensure there is enough free transmit buffer space for this * packet, including its header. Note: the header cannot wrap * around the end of the transmit buffer and must be kept * together, so we allow space for twice the length of the * header, just in case. */ for (len = 0, m = opkt; m != NULL; m = m->m_next) len += m->m_len; data_len = len; DODEBUG(Sent_Pkts, printf("1. Sending packet with %d data bytes. ", data_len);); if (len & 1) len += XMT_HEADER_LEN + 1; else len += XMT_HEADER_LEN; if ((i = sc->tx_tail - sc->tx_head) >= 0) avail = sc->tx_mem_size - i; else avail = -i; DODEBUG(Sent_Pkts, printf("i=%d, avail=%d\n", i, avail);); if (avail >= len + XMT_HEADER_LEN) { IF_DEQUEUE(&ifp->if_snd, opkt); #ifdef EX_PSA_INTR /* * Disable rx and tx interrupts, to avoid corruption of * the host address register by interrupt service * routines. XXX Is this necessary with splimp() * enabled? */ ISA_WRITE(MASK_REG, All_Int); #endif /* * Compute the start and end addresses of this frame * in the tx buffer. */ dest = sc->tx_tail; next = dest + len; if (next > sc->tx_upper_limit) { if ((sc->tx_upper_limit + 2 - sc->tx_tail) <= XMT_HEADER_LEN) { dest = sc->tx_lower_limit; next = dest + len; } else next = sc->tx_lower_limit + next - sc->tx_upper_limit - 2; } /* Build the packet frame in the card's ring buffer. */ DODEBUG(Sent_Pkts, printf("2. dest=%d, next=%d. ", dest, next);); ISA_PUT_2(HOST_ADDR_REG, dest); ISA_PUT_2(IO_PORT_REG, Transmit_CMD); ISA_PUT_2(IO_PORT_REG, 0); ISA_PUT_2(IO_PORT_REG, next); ISA_PUT_2(IO_PORT_REG, data_len); /* * Output the packet data to the card. Ensure all * transfers are 16-bit wide, even if individual mbufs * have odd length. */ for (m = opkt, i = 0; m != NULL; m = m->m_next) { DODEBUG(Sent_Pkts, printf("[%d]", m->m_len);); if (i) { tmp16[1] = *(mtod(m, caddr_t)); ISA_PUT_2_MULTI(IO_PORT_REG, tmp16, 1); } ISA_PUT_2_MULTI(IO_PORT_REG, mtod(m, caddr_t) + i, (m->m_len - i) / 2); if ((i = (m->m_len - i) & 1)) tmp16[0] = *(mtod(m, caddr_t) + m->m_len - 1); } if (i) ISA_PUT_2_MULTI(IO_PORT_REG, tmp16, 1); /* * If there were other frames chained, update the * chain in the last one. */ if (sc->tx_head != sc->tx_tail) { if (sc->tx_tail != dest) { ISA_PUT_2(HOST_ADDR_REG, sc->tx_last + XMT_Chain_Point); ISA_PUT_2(IO_PORT_REG, dest); } ISA_PUT_2(HOST_ADDR_REG, sc->tx_last + XMT_Byte_Count); i = ISA_GET_2(IO_PORT_REG); ISA_PUT_2(HOST_ADDR_REG, sc->tx_last + XMT_Byte_Count); ISA_PUT_2(IO_PORT_REG, i | Ch_bit); } /* * Resume normal operation of the card: * -Make a dummy read to flush the DRAM write pipeline. * -Enable receive and transmit interrupts. * -Send Transmit or Resume_XMT command, as appropriate. */ ISA_GET_2(IO_PORT_REG); #ifdef EX_PSA_INTR ISA_PUT_2(MASK_REG, All_Int & ~(Rx_Int | Tx_Int)); #endif if (sc->tx_head == sc->tx_tail) { ISA_PUT_2(XMT_BAR, dest); ISA_PUT(CMD_REG, Transmit_CMD); sc->tx_head = dest; DODEBUG(Sent_Pkts, printf("Transmit\n");); } else { ISA_PUT(CMD_REG, Resume_XMT_List_CMD); DODEBUG(Sent_Pkts, printf("Resume\n");); } sc->tx_last = dest; sc->tx_tail = next; #if NBPFILTER > 0 if (ifp->if_bpf != NULL) bpf_mtap(ifp->if_bpf, opkt); #endif ifp->if_timer = 2; ifp->if_opackets++; m_freem(opkt); } else { ifp->if_flags |= IFF_OACTIVE; DODEBUG(Status, printf("OACTIVE start\n");); } } splx(s); DODEBUG(Start_End, printf("ex_start: finish\n");); } void ex_stop(sc) struct ex_softc *sc; { DODEBUG(Start_End, printf("ex_stop: start\n");); /* * Disable card operation: * - Disable the interrupt line. * - Flush transmission and disable reception. * - Mask and clear all interrupts. * - Reset the 82595. */ BANK_SEL(Bank1_Sel); ISA_PUT(REG1, ISA_GET(REG1) & ~TriST_INT); BANK_SEL(Bank0_Sel); ISA_PUT(CMD_REG, Rcv_Stop); sc->tx_head = sc->tx_tail = sc->tx_lower_limit; sc->tx_last = 0; /* XXX I think these two lines are not necessary, because ex_init will always be called again to reinit the interface. */ ISA_PUT(MASK_REG, All_Int); ISA_PUT(STATUS_REG, All_Int); ISA_PUT(CMD_REG, Reset_CMD); delay(200); DODEBUG(Start_End, printf("ex_stop: finish\n");); } int exintr(arg) void *arg; { struct ex_softc *sc = arg; struct ifnet *ifp = &sc->arpcom.ac_if; int int_status, send_pkts; int handled; DODEBUG(Start_End, printf("exintr: start\n");); #ifdef EXDEBUG if (++exintr_count != 1) printf("WARNING: nested interrupt (%d). Mail the author.\n", exintr_count); #endif send_pkts = 0; while ((int_status = ISA_GET(STATUS_REG)) & (Tx_Int | Rx_Int)) { if (int_status & Rx_Int) { ISA_PUT(STATUS_REG, Rx_Int); handled = 1; ex_rx_intr(sc); } else if (int_status & Tx_Int) { ISA_PUT(STATUS_REG, Tx_Int); handled = 1; ex_tx_intr(sc); send_pkts = 1; } else handled = 0; } /* * If any packet has been transmitted, and there are queued packets to * be sent, attempt to send more packets to the network card. */ if (send_pkts && (ifp->if_snd.ifq_head != NULL)) ex_start(ifp); #ifdef EXDEBUG exintr_count--; #endif DODEBUG(Start_End, printf("exintr: finish\n");); return handled; } void ex_tx_intr(sc) struct ex_softc *sc; { register struct ifnet *ifp = &sc->arpcom.ac_if; int tx_status; DODEBUG(Start_End, printf("ex_tx_intr: start\n");); /* * - Cancel the watchdog. * For all packets transmitted since last transmit interrupt: * - Advance chain pointer to next queued packet. * - Update statistics. */ ifp->if_timer = 0; while (sc->tx_head != sc->tx_tail) { ISA_PUT_2(HOST_ADDR_REG, sc->tx_head); if (! ISA_GET_2(IO_PORT_REG) & Done_bit) break; tx_status = ISA_GET_2(IO_PORT_REG); sc->tx_head = ISA_GET_2(IO_PORT_REG); if (tx_status & TX_OK_bit) ifp->if_opackets++; else ifp->if_oerrors++; ifp->if_collisions += tx_status & No_Collisions_bits; } /* The card should be ready to accept more packets now. */ ifp->if_flags &= ~IFF_OACTIVE; DODEBUG(Status, printf("OIDLE tx_intr\n");); DODEBUG(Start_End, printf("ex_tx_intr: finish\n");); } void ex_rx_intr(sc) struct ex_softc *sc; { register struct ifnet *ifp = &sc->arpcom.ac_if; int rx_status, pkt_len, QQQ; register struct mbuf *m, *ipkt; struct ether_header *eh; DODEBUG(Start_End, printf("ex_rx_intr: start\n");); /* * For all packets received since last receive interrupt: * - If packet ok, read it into a new mbuf and queue it to interface, * updating statistics. * - If packet bad, just discard it, and update statistics. * Finally, advance receive stop limit in card's memory to new location. */ ISA_PUT_2(HOST_ADDR_REG, sc->rx_head); while (ISA_GET_2(IO_PORT_REG) == RCV_Done) { rx_status = ISA_GET_2(IO_PORT_REG); sc->rx_head = ISA_GET_2(IO_PORT_REG); QQQ = pkt_len = ISA_GET_2(IO_PORT_REG); if (rx_status & RCV_OK_bit) { MGETHDR(m, M_DONTWAIT, MT_DATA); ipkt = m; if (ipkt == NULL) ifp->if_iqdrops++; else { ipkt->m_pkthdr.rcvif = ifp; ipkt->m_pkthdr.len = pkt_len; ipkt->m_len = MHLEN; while (pkt_len > 0) { if (pkt_len > MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) m->m_len = MCLBYTES; else { m_freem(ipkt); ifp->if_iqdrops++; goto rx_another; } } m->m_len = min(m->m_len, pkt_len); /* * NOTE: I'm assuming that all mbufs * allocated are of even length, except * for the last one in an odd-length * packet. */ ISA_GET_2_MULTI(IO_PORT_REG, mtod(m, caddr_t), m->m_len / 2); if (m->m_len & 1) *(mtod(m, caddr_t) + m->m_len - 1) = ISA_GET(IO_PORT_REG); pkt_len -= m->m_len; if (pkt_len > 0) { MGET(m->m_next, M_DONTWAIT, MT_DATA); if (m->m_next == NULL) { m_freem(ipkt); ifp->if_iqdrops++; goto rx_another; } m = m->m_next; m->m_len = MLEN; } } eh = mtod(ipkt, struct ether_header *); #ifdef EXDEBUG if (debug_mask & Rcvd_Pkts) { if ((eh->ether_dhost[5] != 0xff) || (eh->ether_dhost[0] != 0xff)) { printf("Receive packet with %d data bytes: %6D -> ", QQQ, eh->ether_shost, ":"); printf("%6D\n", eh->ether_dhost, ":"); } /* QQQ */ } #endif #if NBPFILTER > 0 if (ifp->if_bpf != NULL) { bpf_mtap(ifp->if_bpf, ipkt); /* * Note that the interface cannot be in * promiscuous mode if there are no BPF * listeners. And if we are in promiscuous * mode, we have to check if this packet is * really ours. */ if ((ifp->if_flags & IFF_PROMISC) && (eh->ether_dhost[0] & 1) == 0 && bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, sizeof(eh->ether_dhost)) != 0 && bcmp(eh->ether_dhost, etherbroadcastaddr, sizeof(eh->ether_dhost)) != 0) { m_freem(ipkt); goto rx_another; } } #endif m_adj(ipkt, sizeof(struct ether_header)); ether_input(ifp, eh, ipkt); ifp->if_ipackets++; } } else ifp->if_ierrors++; ISA_PUT_2(HOST_ADDR_REG, sc->rx_head); rx_another: ; } if (sc->rx_head < sc->rx_lower_limit + 2) ISA_PUT_2(RCV_STOP_REG, sc->rx_upper_limit); else ISA_PUT_2(RCV_STOP_REG, sc->rx_head - 2); DODEBUG(Start_End, printf("ex_rx_intr: finish\n");); } int ex_ioctl(ifp, cmd, data) register struct ifnet *ifp; u_long cmd; caddr_t data; { register struct ifaddr *ifa = (struct ifaddr *) data; struct ex_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int s, error = 0; DODEBUG(Start_End, printf("ex_ioctl: start ");); s = splimp(); switch(cmd) { case SIOCSIFADDR: DODEBUG(Start_End, printf("SIOCSIFADDR");); ifp->if_flags |= IFF_UP; switch(ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: ex_init(sc); arp_ifinit((struct arpcom *) ifp, ifa); break; #endif #ifdef IPX_NOTYET case AF_IPX: { register struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr); if (ipx_nullhost(*ina)) ina->x_host = *(union ipx_host *) (sc->arpcom.ac_enaddr); else { ifp->if_flags &= ~IFF_RUNNING; bcopy((caddr_t) ina->x_host.c_host, (caddr_t) sc->arpcom.ac_enaddr, sizeof(sc->arpcom.ac_enaddr) ); } ex_init(sc); break; } #endif #ifdef NS case AF_NS: { register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); if (ns_nullhost(*ina)) ina->x_host = *(union ns_host *) (sc->arpcom.ac_enaddr); else { ifp->if_flags &= ~IFF_RUNNING; bcopy((caddr_t) ina->x_host.c_host, (caddr_t) sc->arpcom.ac_enaddr, sizeof(sc->arpcom.ac_enaddr)); } ex_init(sc); break; } #endif default: ex_init(sc); break; } break; case SIOCGIFADDR: { struct sockaddr *sa; DODEBUG(Start_End, printf("SIOCGIFADDR");); sa = (struct sockaddr *) &ifr->ifr_data; bcopy((caddr_t) sc->arpcom.ac_enaddr, (caddr_t) sa->sa_data, ETHER_ADDR_LEN); } break; case SIOCSIFFLAGS: DODEBUG(Start_End, printf("SIOCSIFFLAGS");); if ((ifp->if_flags & IFF_UP) == 0 && ifp->if_flags & IFF_RUNNING) { ifp->if_flags &= ~IFF_RUNNING; ex_stop(sc); } else ex_init(sc); break; #ifdef NODEF case SIOCGHWADDR: DODEBUG(Start_End, printf("SIOCGHWADDR");); bcopy((caddr_t) sc->sc_addr, (caddr_t) &ifr->ifr_data, sizeof(sc->sc_addr)); break; #endif #if 0 /* XXX can we do this? */ case SIOCSIFMTU: DODEBUG(Start_End, printf("SIOCSIFMTU");); if (ifr->if_mtu > ETHERMTU) error = EINVAL; else ifp->if_mtu = ifr->ifr_mtu; break; #endif case SIOCADDMULTI: DODEBUG(Start_End, printf("SIOCADDMULTI");); case SIOCDELMULTI: DODEBUG(Start_End, printf("SIOCDELMULTI");); /* XXX Support not done yet. */ error = EINVAL; break; default: DODEBUG(Start_End, printf("unknown");); error = EINVAL; } splx(s); DODEBUG(Start_End, printf("\nex_ioctl: finish\n");); return(error); } void ex_reset(sc) struct ex_softc *sc; { int s; DODEBUG(Start_End, printf("ex_reset: start\n");); s = splimp(); ex_stop(sc); ex_init(sc); splx(s); DODEBUG(Start_End, printf("ex_reset: finish\n");); } void ex_watchdog(ifp) struct ifnet *ifp; { struct ex_softc *sc = ifp->if_softc; DODEBUG(Start_End, printf("ex_watchdog: start\n");); ifp->if_flags &= ~IFF_OACTIVE; DODEBUG(Status, printf("OIDLE watchdog\n");); ifp->if_oerrors++; ex_reset(sc); ex_start(ifp); DODEBUG(Start_End, printf("ex_watchdog: finish\n");); } static u_short eeprom_read(sc, location) struct ex_softc *sc; int location; { int i; u_short data = 0; int read_cmd = location | EE_READ_CMD; short ctrl_val = EECS; BANK_SEL(Bank2_Sel); ISA_PUT(EEPROM_REG, EECS); for (i = 8; i >= 0; i--) { short outval = (read_cmd & (1 << i)) ? ctrl_val | EEDI : ctrl_val; ISA_PUT(EEPROM_REG, outval); ISA_PUT(EEPROM_REG, outval | EESK); delay(3); ISA_PUT(EEPROM_REG, outval); delay(2); } ISA_PUT(EEPROM_REG, ctrl_val); for (i = 16; i > 0; i--) { ISA_PUT(EEPROM_REG, ctrl_val | EESK); delay(3); data = (data << 1) | ((ISA_GET(EEPROM_REG) & EEDO) ? 1 : 0); ISA_PUT(EEPROM_REG, ctrl_val); delay(2); } ctrl_val &= ~EECS; ISA_PUT(EEPROM_REG, ctrl_val | EESK); delay(3); ISA_PUT(EEPROM_REG, ctrl_val); delay(2); BANK_SEL(Bank0_Sel); return(data); } #endif /* NEX > 0 */