/* $NetBSD: if_iy.c,v 1.4 1996/05/12 23:52:53 mycroft Exp $ */ /* #define IYDEBUG */ /* #define IYMEMDEBUG */ /*- * Copyright (c) 1996 Ignatios Souvatzis. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product contains software developed by Ignatios Souvatzis for * the NetBSD project. * 4. The names of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #include #endif #ifdef INET #include #include #include #include #include #endif #ifdef NS #include #include #endif #include #include #include #include #include #include #include #define ETHER_MIN_LEN 64 #define ETHER_MAX_LEN 1518 /* * Ethernet status, per interface. */ struct iy_softc { struct device sc_dev; void *sc_ih; int sc_iobase; struct arpcom sc_arpcom; #define MAX_MBS 8 struct mbuf *mb[MAX_MBS]; int next_mb, last_mb; int mappedirq; int hard_vers; int promisc; int sram, tx_size, rx_size; int tx_start, tx_end, tx_last; int rx_start; #ifdef IYDEBUG int sc_debug; #endif }; void iywatchdog __P((struct ifnet *)); int iyioctl __P((struct ifnet *, u_long, caddr_t)); int iyintr __P((void *)); void iyinit __P((struct iy_softc *)); void iystop __P((struct iy_softc *)); void iystart __P((struct ifnet *)); void iy_intr_rx __P((struct iy_softc *)); void iy_intr_tx __P((struct iy_softc *)); void eepro_reset_595 __P((struct iy_softc *)); int eepro_probe __P((struct iy_softc *, struct isa_attach_args *)); void eepro_eeprom_outbits __P((struct iy_softc *, int, int)); void eepro_eeprom_clock __P((struct iy_softc *, int)); u_short eepro_read_eeprom __P((struct iy_softc *, int)); int eepro_eeprom_inbits __P((struct iy_softc *)); void iyreset __P((struct iy_softc *)); void iy_readframe __P((struct iy_softc *, int)); void iy_drop_packet_buffer __P((struct iy_softc *)); void iy_find_mem_size __P((struct iy_softc *)); void iyrint __P((struct iy_softc *)); void iytint __P((struct iy_softc *)); void iyxmit __P((struct iy_softc *)); void iyget __P((struct iy_softc *, int, int)); void iymbuffill __P((void *)); void iymbufempty __P((void *)); void iyprobemem __P((struct iy_softc *)); /* * void iymeminit __P((void *, struct iy_softc *)); * static int iy_mc_setup __P((struct iy_softc *, void *)); * static void iy_mc_reset __P((struct iy_softc *)); */ #ifdef IYDEBUGX void print_rbd __P((volatile struct iy_recv_buf_desc *)); int in_ifrint = 0; int in_iftint = 0; #endif int iyprobe __P((struct device *, void *, void *)); void iyattach __P((struct device *, struct device *, void *)); static u_int16_t eepromread __P((int, int)); struct cfattach iy_ca = { sizeof(struct iy_softc), iyprobe, iyattach }; struct cfdriver iy_cd = { NULL, "iy", DV_IFNET }; static u_int8_t eepro_irqmap[] = EEPP_INTMAP; static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; int iyprobe(parent, match, aux) struct device *parent; void *match, *aux; { struct iy_softc *sc = match; struct isa_attach_args *ia = aux; u_int16_t eaddr[8]; int iobase; int i; u_int16_t checksum = 0; u_int16_t eepromtmp; u_int8_t c, d; iobase = ia->ia_iobase; if (iobase == -1) return 0; /* try to find the round robin sig: */ /* check here for addresses already given to other devices */ c = inb(iobase + ID_REG); if (c & ID_REG_MASK != ID_REG_SIG) return 0; d = inb(iobase + ID_REG); if (d & ID_REG_MASK != ID_REG_SIG) return 0; if (((d-c) & R_ROBIN_BITS) != 0x40) return 0; d = inb(iobase + ID_REG); if (d & ID_REG_MASK != ID_REG_SIG) return 0; if (((d-c) & R_ROBIN_BITS) != 0x80) return 0; d = inb(iobase + ID_REG); if (d & ID_REG_MASK != ID_REG_SIG) return 0; if (((d-c) & R_ROBIN_BITS) != 0xC0) return 0; d = inb(iobase + ID_REG); if (d & ID_REG_MASK != ID_REG_SIG) return 0; if (((d-c) & R_ROBIN_BITS) != 0x00) return 0; #ifdef IYDEBUG printf("eepro_probe verified working ID reg.\n"); #endif for (i=0; i<64; ++i) { eepromtmp = eepromread(iobase, i); checksum += eepromtmp; if (i<(sizeof(eaddr)/sizeof(*eaddr))) eaddr[i] = eepromtmp; } if (checksum != EEPP_CHKSUM) printf("wrong EEPROM checksum 0x%x should be 0x%x\n", checksum, EEPP_CHKSUM); if ((eaddr[EEPPEther0] != eepromread(iobase, EEPPEther0a)) && (eaddr[EEPPEther1] != eepromread(iobase, EEPPEther1a)) && (eaddr[EEPPEther2] != eepromread(iobase, EEPPEther2a))) printf("EEPROM Ethernet address differs from copy\n"); sc->sc_arpcom.ac_enaddr[1] = eaddr[EEPPEther0] & 0xFF; sc->sc_arpcom.ac_enaddr[0] = eaddr[EEPPEther0] >> 8; sc->sc_arpcom.ac_enaddr[3] = eaddr[EEPPEther1] & 0xFF; sc->sc_arpcom.ac_enaddr[2] = eaddr[EEPPEther1] >> 8; sc->sc_arpcom.ac_enaddr[5] = eaddr[EEPPEther2] & 0xFF; sc->sc_arpcom.ac_enaddr[4] = eaddr[EEPPEther2] >> 8; if (ia->ia_irq == IRQUNK) ia->ia_irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; if (ia->ia_irq >= sizeof(eepro_revirqmap)) return 0; if ((sc->mappedirq = eepro_revirqmap[ia->ia_irq]) == -1) return 0; sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; /* now lets reset the chip */ outb(iobase + COMMAND_REG, RESET_CMD); delay(200); ia->ia_iobase = iobase; ia->ia_iosize = 16; return 1; /* found */ } void iyattach(parent, self, aux) struct device *parent, *self; void *aux; { struct iy_softc *sc = (void *)self; struct isa_attach_args *ia = aux; struct ifnet *ifp = &sc->sc_arpcom.ac_if; bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_softc = sc; ifp->if_start = iystart; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; /* XXX todo: | IFF_MULTICAST */ sc->sc_iobase = ia->ia_iobase; iyprobemem(sc); ifp->if_ioctl = iyioctl; ifp->if_watchdog = iywatchdog; /* Attach the interface. */ if_attach(ifp); ether_ifattach(ifp); printf(": address %s, chip rev. %d, %d kB SRAM\n", ether_sprintf(sc->sc_arpcom.ac_enaddr), sc->hard_vers, sc->sram/1024); #if NBPFILTER > 0 bpfattach(&sc->sc_arpcom.ac_if.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, iyintr, sc); } void iystop(sc) struct iy_softc *sc; { int iobase; #ifdef IYDEBUG u_int p, v; #endif iobase = sc->sc_iobase; outb(iobase + COMMAND_REG, RCV_DISABLE_CMD); outb(iobase + INT_MASK_REG, ALL_INTS); outb(iobase + STATUS_REG, ALL_INTS); outb(iobase + COMMAND_REG, RESET_CMD); delay(200); #ifdef IYDEBUG printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); p = sc->tx_last; if (!p) p = sc->tx_start; do { outw(iobase + HOST_ADDR_REG, p); v = inw(iobase + MEM_PORT_REG); printf("0x%04x: %b ", p, v, "\020\006Ab\010Dn"); v = inw(iobase + MEM_PORT_REG); printf("0x%b", v, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL"); p = inw(iobase + MEM_PORT_REG); printf(" 0x%04x", p); v = inw(iobase + MEM_PORT_REG); printf(" 0x%b\n", v, "\020\020Ch"); } while (v & 0x8000); #endif sc->tx_start = sc->tx_end = sc->rx_size; sc->tx_last = 0; sc->sc_arpcom.ac_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); iymbufempty((void *)sc); } void iyreset(sc) struct iy_softc *sc; { int s; s = splimp(); iystop(sc); iyinit(sc); splx(s); } void iyinit(sc) struct iy_softc *sc; { int i; unsigned temp; struct ifnet *ifp; int iobase; ifp = &sc->sc_arpcom.ac_if; #ifdef IYDEBUG printf("ifp is %p\n", ifp); #endif iobase = sc->sc_iobase; outb(iobase, BANK_SEL(2)); temp = inb(iobase + EEPROM_REG); if (temp & 0x10) outb(iobase + EEPROM_REG, temp & ~0x10); for (i=0; i<6; ++i) { outb(iobase + I_ADD(i), sc->sc_arpcom.ac_enaddr[i]); } temp = inb(iobase + REG1); outb(iobase + REG1, temp | XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | RCV_DISCARD_BAD); temp = inb(iobase + RECV_MODES_REG); outb(iobase + RECV_MODES_REG, temp | MATCH_BRDCST); #ifdef IYDEBUG printf("%s: RECV_MODES were %b set to %b\n", sc->sc_dev.dv_xname, temp, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", temp|MATCH_BRDCST, "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA"); #endif DELAY(500000); /* for the hardware to test for the connector */ temp = inb(iobase + MEDIA_SELECT); #ifdef IYDEBUG printf("%s: media select was 0x%b", sc->sc_dev.dv_xname, temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); #endif temp = (temp & TEST_MODE_MASK) /* | BNC_BIT XXX*/; outb(iobase + MEDIA_SELECT, temp); #ifdef IYDEBUG printf("changed to 0x%b\n", temp, "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC"); #endif outb(iobase, BANK_SEL(1)); temp = inb(iobase + INT_NO_REG); outb(iobase + INT_NO_REG, (temp & 0xf8) | sc->mappedirq); #ifdef IYDEBUG printf("%s: int no was %b\n", sc->sc_dev.dv_xname, temp, "\020\4bad_irq\010flash/boot present"); temp = inb(iobase + INT_NO_REG); printf("%s: int no now 0x%02x\n", sc->sc_dev.dv_xname, temp, "\020\4BAD IRQ\010flash/boot present"); #endif outb(iobase + RCV_LOWER_LIMIT_REG, 0); outb(iobase + RCV_UPPER_LIMIT_REG, (sc->rx_size - 2) >> 8); outb(iobase + XMT_LOWER_LIMIT_REG, sc->rx_size >> 8); outb(iobase + XMT_UPPER_LIMIT_REG, sc->sram >> 8); temp = inb(iobase + REG1); #ifdef IYDEBUG printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, temp, "\020\2WORD_WIDTH\010INT_ENABLE"); #endif outb(iobase + REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ #ifdef IYDEBUG temp = inb(iobase + REG1); printf("%s: HW access is %b\n", sc->sc_dev.dv_xname, temp, "\020\2WORD_WIDTH\010INT_ENABLE"); #endif outb(iobase, BANK_SEL(0)); outb(iobase + INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); outb(iobase + STATUS_REG, ALL_INTS); /* clear ints */ outw(iobase + RCV_START_LOW, 0); outw(iobase + RCV_STOP_LOW, sc->rx_size - 2); sc->rx_start = 0; outb(iobase, SEL_RESET_CMD); DELAY(200); outw(iobase + XMT_ADDR_REG, sc->rx_size); sc->tx_start = sc->tx_end = sc->rx_size; sc->tx_last = 0; outb(iobase, RCV_ENABLE_CMD); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; } void iystart(ifp) struct ifnet *ifp; { struct iy_softc *sc; int iobase; struct mbuf *m0, *m; u_int len, pad, last, end; u_int llen, residual; int avail; caddr_t data; u_int16_t resval, stat; #ifdef IYDEBUG printf("iystart called\n"); #endif if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) return; sc = ifp->if_softc; iobase = sc->sc_iobase; while ((m0 = ifp->if_snd.ifq_head) != NULL) { #ifdef IYDEBUG printf("%s: trying to write another packet to the hardware\n", sc->sc_dev.dv_xname); #endif /* We need to use m->m_pkthdr.len, so require the header */ if ((m0->m_flags & M_PKTHDR) == 0) panic("iystart: no header mbuf"); len = m0->m_pkthdr.len; pad = len & 1; #ifdef IYDEBUG printf("%s: length is %d.\n", sc->sc_dev.dv_xname, len); #endif if (len < ETHER_MIN_LEN) { pad = ETHER_MIN_LEN - len; } if (len + pad > ETHER_MAX_LEN) { /* packet is obviously too large: toss it */ ++ifp->if_oerrors; IF_DEQUEUE(&ifp->if_snd, m0); m_freem(m0); continue; } #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m0); #endif avail = sc->tx_start - sc->tx_end; if (avail <= 0) avail += sc->tx_size; #ifdef IYDEBUG printf("%s: avail is %d.\n", sc->sc_dev.dv_xname, avail); #endif /* * we MUST RUN at splnet here --- * XXX todo: or even turn off the boards ints ??? hm... */ /* See if there is room to put another packet in the buffer. */ if ((len+pad+2*I595_XMT_HDRLEN) > avail) { printf("%s: len = %d, avail = %d, setting OACTIVE\n", sc->sc_dev.dv_xname, len, avail); ifp->if_flags |= IFF_OACTIVE; return; } /* we know it fits in the hardware now, so dequeue it */ IF_DEQUEUE(&ifp->if_snd, m0); last = sc->tx_end; end = last + pad + len + I595_XMT_HDRLEN; if (end >= sc->sram) { if ((sc->sram - last) <= I595_XMT_HDRLEN) { /* keep header in one piece */ last = sc->rx_size; end = last + pad + len + I595_XMT_HDRLEN; } else end -= sc->tx_size; } outw(iobase + HOST_ADDR_REG, last); outw(iobase + MEM_PORT_REG, XMT_CMD); outw(iobase + MEM_PORT_REG, 0); outw(iobase + MEM_PORT_REG, 0); outw(iobase + MEM_PORT_REG, len + pad); residual = resval = 0; while ((m = m0)!=0) { data = mtod(m, caddr_t); llen = m->m_len; if (residual) { #ifdef IYDEBUG printf("%s: merging residual with next mbuf.\n", sc->sc_dev.dv_xname); #endif resval |= *data << 8; outw(iobase + MEM_PORT_REG, resval); --llen; ++data; } if (llen > 1) outsw(iobase + MEM_PORT_REG, data, llen>>1); residual = llen & 1; if (residual) { resval = *(data + llen - 1); #ifdef IYDEBUG printf("%s: got odd mbuf to send.\n", sc->sc_dev.dv_xname); #endif } MFREE(m, m0); } if (residual) outw(iobase + MEM_PORT_REG, resval); pad >>= 1; while (pad-- > 0) outw(iobase + MEM_PORT_REG, 0); #ifdef IYDEBUG printf("%s: new last = 0x%x, end = 0x%x.\n", sc->sc_dev.dv_xname, last, end); printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", sc->sc_dev.dv_xname, sc->tx_start, sc->tx_end, sc->tx_last); #endif if (sc->tx_start != sc->tx_end) { outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_COUNT); stat = inw(iobase + MEM_PORT_REG); outw(iobase + HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); outw(iobase + MEM_PORT_REG, last); outw(iobase + MEM_PORT_REG, stat | CHAIN); #ifdef IYDEBUG printf("%s: setting 0x%x to 0x%x\n", sc->sc_dev.dv_xname, sc->tx_last + XMT_COUNT, stat | CHAIN); #endif } stat = inw(iobase + MEM_PORT_REG); /* dummy read */ /* XXX todo: enable ints here if disabled */ ++ifp->if_opackets; if (sc->tx_start == sc->tx_end) { outw(iobase + XMT_ADDR_REG, last); outb(iobase, XMT_CMD); sc->tx_start = last; #ifdef IYDEBUG printf("%s: writing 0x%x to XAR and giving XCMD\n", sc->sc_dev.dv_xname, last); #endif } else { outb(iobase, RESUME_XMT_CMD); #ifdef IYDEBUG printf("%s: giving RESUME_XCMD\n", sc->sc_dev.dv_xname); #endif } sc->tx_last = last; sc->tx_end = end; } } static __inline void eepromwritebit(eio, what) int eio, what; { outb(eio, what); delay(1); outb(eio, what|EESK); delay(1); outb(eio, what); delay(1); } static __inline int eepromreadbit(eio) int eio; { int b; outb(eio, EECS|EESK); delay(1); b = inb(eio); outb(eio, EECS); delay(1); return ((b & EEDO) != 0); } static u_int16_t eepromread(io, offset) int io, offset; { volatile int i; volatile int j; volatile u_int16_t readval; int eio = io+EEPROM_REG; outb(io, BANK_SEL(2)); delay(1); outb(io, EECS); delay(1); eepromwritebit(eio, EECS|EEDI); eepromwritebit(eio, EECS|EEDI); eepromwritebit(eio, EECS); for (j=5; j>=0; --j) { if ((offset>>j) & 1) eepromwritebit(eio, EECS|EEDI); else eepromwritebit(eio, EECS); } for (readval=0, i=0; i<16; ++i) { readval<<=1; readval |= eepromreadbit(eio); } outb(eio, 0|EESK); delay(1); outb(eio, 0); outb(eio, BANK_SEL(0)); return readval; } /* * Device timeout/watchdog routine. Entered if the device neglects to generate * an interrupt after a transmit has been started on it. */ void iywatchdog(ifp) struct ifnet *ifp; { struct iy_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); ++sc->sc_arpcom.ac_if.if_oerrors; iyreset(sc); } /* * What to do upon receipt of an interrupt. */ int iyintr(arg) void *arg; { struct iy_softc *sc = arg; int iobase; register u_short status; iobase = sc->sc_iobase; status = inb(iobase + STATUS_REG); #ifdef IYDEBUG if (status & ALL_INTS) { printf("%s: got interupt %b", sc->sc_dev.dv_xname, status, "\020\1RX_STP\2RX\3TX\4EXEC"); if (status & EXEC_INT) printf(" event %b\n", inb(iobase), "\020\6ABORT"); else printf("\n"); } #endif if ((status & (RX_INT | TX_INT) == 0)) return 0; if (status & RX_INT) { iy_intr_rx(sc); outb(iobase + STATUS_REG, RX_INT); } else if (status & TX_INT) { iy_intr_tx(sc); outb(iobase + STATUS_REG, TX_INT); } return 1; } void iyget(sc, iobase, rxlen) struct iy_softc *sc; int iobase, rxlen; { struct mbuf *m, *top, **mp; struct ether_header *eh; struct ifnet *ifp; int len; ifp = &sc->sc_arpcom.ac_if; m = sc->mb[sc->next_mb]; sc->mb[sc->next_mb] = 0; if (m == 0) { MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == 0) goto dropped; } else { if (sc->last_mb == sc->next_mb) timeout(iymbuffill, sc, 1); sc->next_mb = (sc->next_mb + 1) % MAX_MBS; m->m_data = m->m_pktdat; m->m_flags = M_PKTHDR; } m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = rxlen; len = MHLEN; top = 0; mp = ⊤ while (rxlen > 0) { if (top) { m = sc->mb[sc->next_mb]; sc->mb[sc->next_mb] = 0; if (m == 0) { MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem(top); goto dropped; } } else { sc->next_mb = (sc->next_mb + 1) % MAX_MBS; } len = MLEN; } if (rxlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (m->m_flags & M_EXT) len = MCLBYTES; } len = min(rxlen, len); if (len > 1) { len &= ~1; insw(iobase + MEM_PORT_REG, mtod(m, caddr_t), len/2); } else { #ifdef IYDEBUG printf("%s: received odd mbuf\n", sc->sc_dev.dv_xname); #endif *(mtod(m, caddr_t)) = inw(iobase + MEM_PORT_REG); } m->m_len = len; rxlen -= len; *mp = m; mp = &m->m_next; } /* XXX receive the top here */ ++ifp->if_ipackets; eh = mtod(top, struct ether_header *); #if NBPFILTER > 0 if (ifp->if_bpf) { bpf_mtap(ifp->if_bpf, top); if ((ifp->if_flags & IFF_PROMISC) && (eh->ether_dhost[0] & 1) == 0 && bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr, sizeof(eh->ether_dhost)) != 0) { m_freem(top); return; } } #endif m_adj(top, sizeof(struct ether_header)); ether_input(ifp, eh, top); return; dropped: ++ifp->if_ierrors; return; } void iy_intr_rx(sc) struct iy_softc *sc; { struct ifnet *ifp; int iobase; u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; iobase = sc->sc_iobase; ifp = &sc->sc_arpcom.ac_if; rxadrs = sc->rx_start; outw(iobase + HOST_ADDR_REG, rxadrs); rxevnt = inw(iobase + MEM_PORT_REG); rxnext = 0; while (rxevnt == RCV_DONE) { rxstatus = inw(iobase + MEM_PORT_REG); rxnext = inw(iobase + MEM_PORT_REG); rxlen = inw(iobase + MEM_PORT_REG); #ifdef IYDEBUG printf("%s: pck at 0x%04x stat %b next 0x%x len 0x%x\n", sc->sc_dev.dv_xname, rxadrs, rxstatus, "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" "\014CRCERR\015LENERR\016RCVOK\020TYP", rxnext, rxlen); #endif iyget(sc, iobase, rxlen); /* move stop address */ outw(iobase + RCV_STOP_LOW, rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); outw(iobase + HOST_ADDR_REG, rxnext); rxadrs = rxnext; rxevnt = inw(iobase + MEM_PORT_REG); } sc->rx_start = rxnext; } void iy_intr_tx(sc) struct iy_softc *sc; { int iobase; struct ifnet *ifp; u_int txstatus, txstat2, txlen, txnext; ifp = &sc->sc_arpcom.ac_if; iobase = sc->sc_iobase; while (sc->tx_start != sc->tx_end) { outw(iobase + HOST_ADDR_REG, sc->tx_start); txstatus = inw(iobase + MEM_PORT_REG); if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) break; txstat2 = inw(iobase + MEM_PORT_REG); txnext = inw(iobase + MEM_PORT_REG); txlen = inw(iobase + MEM_PORT_REG); #ifdef IYDEBUG printf("txstat 0x%x stat2 0x%b next 0x%x len 0x%x\n", txstatus, txstat2, "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" "\011UND_RUN\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", txnext, txlen); #endif if (txlen & CHAIN) sc->tx_start = txnext; else sc->tx_start = sc->tx_end; ifp->if_flags &= ~IFF_OACTIVE; if ((txstat2 & 0x2000) == 0) ++ifp->if_oerrors; if (txstat2 & 0x000f) ifp->if_oerrors += txstat2 & 0x000f; } ifp->if_flags &= ~IFF_OACTIVE; } #if 0 /* * Compare two Ether/802 addresses for equality, inlined and unrolled for * speed. I'd love to have an inline assembler version of this... */ static inline int ether_equal(one, two) u_char *one, *two; { if (one[0] != two[0] || one[1] != two[1] || one[2] != two[2] || one[3] != two[3] || one[4] != two[4] || one[5] != two[5]) return 0; return 1; } /* * Check for a valid address. to_bpf is filled in with one of the following: * 0 -> BPF doesn't get this packet * 1 -> BPF does get this packet * 2 -> BPF does get this packet, but we don't * Return value is true if the packet is for us, and false otherwise. * * This routine is a mess, but it's also critical that it be as fast * as possible. It could be made cleaner if we can assume that the * only client which will fiddle with IFF_PROMISC is BPF. This is * probably a good assumption, but we do not make it here. (Yet.) */ static inline int check_eh(sc, eh, to_bpf) struct iy_softc *sc; struct ether_header *eh; int *to_bpf; { int i; switch (sc->promisc) { case IFF_ALLMULTI: /* * Receiving all multicasts, but no unicasts except those * destined for us. */ #if NBPFILTER > 0 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); /* BPF gets this packet if anybody cares */ #endif if (eh->ether_dhost[0] & 1) return 1; if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) return 1; return 0; case IFF_PROMISC: /* * Receiving all packets. These need to be passed on to BPF. */ #if NBPFILTER > 0 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); #endif /* If for us, accept and hand up to BPF */ if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) return 1; #if NBPFILTER > 0 if (*to_bpf) *to_bpf = 2; /* we don't need to see it */ #endif /* * Not a multicast, so BPF wants to see it but we don't. */ if (!(eh->ether_dhost[0] & 1)) return 1; /* * If it's one of our multicast groups, accept it and pass it * up. */ for (i = 0; i < sc->mcast_count; i++) { if (ether_equal(eh->ether_dhost, (u_char *)&sc->mcast_addrs[i])) { #if NBPFILTER > 0 if (*to_bpf) *to_bpf = 1; #endif return 1; } } return 1; case IFF_ALLMULTI | IFF_PROMISC: /* * Acting as a multicast router, and BPF running at the same * time. Whew! (Hope this is a fast machine...) */ #if NBPFILTER > 0 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); #endif /* We want to see multicasts. */ if (eh->ether_dhost[0] & 1) return 1; /* We want to see our own packets */ if (ether_equal(eh->ether_dhost, sc->sc_arpcom.ac_enaddr)) return 1; /* Anything else goes to BPF but nothing else. */ #if NBPFILTER > 0 if (*to_bpf) *to_bpf = 2; #endif return 1; case 0: /* * Only accept unicast packets destined for us, or multicasts * for groups that we belong to. For now, we assume that the * '586 will only return packets that we asked it for. This * isn't strictly true (it uses hashing for the multicast * filter), but it will do in this case, and we want to get out * of here as quickly as possible. */ #if NBPFILTER > 0 *to_bpf = (sc->sc_arpcom.ac_if.iy_bpf != 0); #endif return 1; } #ifdef DIAGNOSTIC panic("check_eh: impossible"); #endif } #endif int iyioctl(ifp, cmd, data) register struct ifnet *ifp; u_long cmd; caddr_t data; { struct iy_softc *sc; struct ifaddr *ifa; struct ifreq *ifr; int s, error = 0; sc = ifp->if_softc; ifa = (struct ifaddr *)data; ifr = (struct ifreq *)data; #ifdef IYDEBUG printf("iyioctl called with ifp 0x%p (%s) cmd 0x%x data 0x%p\n", ifp, ifp->if_xname, cmd, data); #endif s = splimp(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: iyinit(sc); arp_ifinit(&sc->sc_arpcom, ifa); break; #endif #ifdef NS /* XXX - This code is probably wrong. */ case AF_NS: { struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; if (ns_nullhost(*ina)) ina->x_host = *(union ns_host *)(sc->sc_arpcom.ac_enaddr); else bcopy(ina->x_host.c_host, sc->sc_arpcom.ac_enaddr, sizeof(sc->sc_arpcom.ac_enaddr)); /* Set new address. */ iyinit(sc); break; } #endif /* NS */ default: iyinit(sc); break; } break; case SIOCSIFFLAGS: sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); if ((ifp->if_flags & IFF_UP) == 0 && (ifp->if_flags & IFF_RUNNING) != 0) { /* * If interface is marked down and it is running, then * stop it. */ iystop(sc); ifp->if_flags &= ~IFF_RUNNING; } else if ((ifp->if_flags & IFF_UP) != 0 && (ifp->if_flags & IFF_RUNNING) == 0) { /* * If interface is marked up and it is stopped, then * start it. */ iyinit(sc); } else { /* * Reset the interface to pick up changes in any other * flags that affect hardware registers. */ iystop(sc); iyinit(sc); } #ifdef IYDEBUGX if (ifp->if_flags & IFF_DEBUG) sc->sc_debug = IFY_ALL; else sc->sc_debug = 0; #endif break; #if 0 /* XXX */ case SIOCADDMULTI: case SIOCDELMULTI: error = (cmd == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->sc_arpcom): ether_delmulti(ifr, &sc->sc_arpcom); if (error == ENETRESET) { /* * Multicast list has changed; set the hardware filter * accordingly. */ iy_mc_reset(sc); /* XXX */ error = 0; } break; #endif default: error = EINVAL; } splx(s); return error; } #if 0 static void iy_mc_reset(sc) struct iy_softc *sc; { struct ether_multi *enm; struct ether_multistep step; /* * Step through the list of addresses. */ sc->mcast_count = 0; ETHER_FIRST_MULTI(step, &sc->sc_arpcom, enm); while (enm) { if (sc->mcast_count >= MAXMCAST || bcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { sc->sc_arpcom.ac_if.if_flags |= IFF_ALLMULTI; iyioctl(&sc->sc_arpcom.ac_if, SIOCSIFFLAGS, (void *)0); goto setflag; } bcopy(enm->enm_addrlo, &sc->mcast_addrs[sc->mcast_count], 6); sc->mcast_count++; ETHER_NEXT_MULTI(step, enm); } setflag: sc->want_mcsetup = 1; } #ifdef IYDEBUG void print_rbd(rbd) volatile struct ie_recv_buf_desc *rbd; { printf("RBD at %08lx:\nactual %04x, next %04x, buffer %08x\n" "length %04x, mbz %04x\n", (u_long)rbd, rbd->ie_rbd_actual, rbd->ie_rbd_next, rbd->ie_rbd_buffer, rbd->ie_rbd_length, rbd->mbz); } #endif #endif void iymbuffill(arg) void *arg; { struct iy_softc *sc = (struct iy_softc *)arg; int s, i; s = splimp(); i = sc->last_mb; do { if (sc->mb[i] == NULL) MGET(sc->mb[i], M_DONTWAIT, MT_DATA); if (sc->mb[i] == NULL) break; i = (i + 1) % MAX_MBS; } while (i != sc->next_mb); sc->last_mb = i; /* If the queue was not filled, try again. */ if (sc->last_mb != sc->next_mb) timeout(iymbuffill, sc, 1); splx(s); } void iymbufempty(arg) void *arg; { struct iy_softc *sc = (struct iy_softc *)arg; int s, i; s = splimp(); for (i = 0; imb[i]) { m_freem(sc->mb[i]); sc->mb[i] = NULL; } } sc->last_mb = sc->next_mb = 0; untimeout(iymbuffill, sc); splx(s); } void iyprobemem(sc) struct iy_softc *sc; { int iobase; int testing; iobase = sc->sc_iobase; outw(iobase + HOST_ADDR_REG, 4096-2); outw(iobase + MEM_PORT_REG, 0); for (testing=65536; testing >= 4096; testing >>= 1) { outw(iobase + HOST_ADDR_REG, testing-2); outw(iobase + MEM_PORT_REG, 0xdead); outw(iobase + HOST_ADDR_REG, testing-2); if (inw(iobase + MEM_PORT_REG) != 0xdead) { #ifdef IYMEMDEBUG printf("%s: Didn't keep 0xdead at 0x%x\n", sc->sc_dev.dv_xname, testing-2); #endif continue; } outw(iobase + HOST_ADDR_REG, testing-2); outw(iobase + MEM_PORT_REG, 0xbeef); outw(iobase + HOST_ADDR_REG, testing-2); if (inw(iobase + MEM_PORT_REG) != 0xbeef) { #ifdef IYMEMDEBUG printf("%s: Didn't keep 0xbeef at 0x%x\n", sc->sc_dev.dv_xname, testing-2); #endif continue; } outw(iobase + HOST_ADDR_REG, 0); outw(iobase + MEM_PORT_REG, 0); outw(iobase + HOST_ADDR_REG, testing >> 1); outw(iobase + MEM_PORT_REG, testing >> 1); outw(iobase + HOST_ADDR_REG, 0); if (inw(iobase + MEM_PORT_REG) == (testing >> 1)) { #ifdef IYMEMDEBUG printf("%s: 0x%x alias of 0x0\n", sc->sc_dev.dv_xname, testing >> 1); #endif continue; } break; } sc->sram = testing; switch(testing) { case 65536: /* 4 NFS packets + overhead RX, 2 NFS + overhead TX */ sc->rx_size = 44*1024; break; case 32768: /* 2 NFS packets + overhead RX, 1 NFS + overhead TX */ sc->rx_size = 22*1024; break; case 16384: /* 1 NFS packet + overhead RX, 4 big packets TX */ sc->rx_size = 10*1024; break; default: sc->rx_size = testing/2; break; } sc->tx_size = testing - sc->rx_size; }