/* $NetBSD: if_iy.c,v 1.100.6.2 2019/11/14 16:04:31 martin Exp $ */ /* #define IYDEBUG */ /* #define IYMEMDEBUG */ /*- * Copyright (c) 1996,2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Ignatios Souvatzis. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * Supported hardware: * * - Intel EtherExpress Pro/10. * - possibly other boards using the i82595 chip and no special tweaks. */ #include __KERNEL_RCSID(0, "$NetBSD: if_iy.c,v 1.100.6.2 2019/11/14 16:04:31 martin Exp $"); #include "opt_inet.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #if defined(SIOCSIFMEDIA) #include #endif #include #include #include #include #include #include /* XXX why isn't this centralized? */ #ifndef __BUS_SPACE_HAS_STREAM_METHODS #define bus_space_write_stream_2 bus_space_write_2 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 #define bus_space_read_stream_2 bus_space_read_2 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ /* * Ethernet status, per interface. */ struct iy_softc { device_t sc_dev; void *sc_ih; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; struct ethercom sc_ethercom; struct ifmedia iy_ifmedia; int iy_media; int mappedirq; int hard_vers; int promisc; int sram, tx_size, rx_size; int tx_start, tx_end, tx_last; int rx_start; int doing_mc_setup; #ifdef IYDEBUG int sc_debug; #endif krndsource_t rnd_source; }; void iywatchdog(struct ifnet *); int iyioctl(struct ifnet *, u_long, void *); int iyintr(void *); void iyinit(struct iy_softc *); void iystop(struct iy_softc *); void iystart(struct ifnet *); void iy_intr_rx(struct iy_softc *); void iy_intr_tx(struct iy_softc *); void iyreset(struct iy_softc *); void iy_readframe(struct iy_softc *, int); void iy_drop_packet_buffer(struct iy_softc *); void iy_find_mem_size(struct iy_softc *); void iyrint(struct iy_softc *); void iytint(struct iy_softc *); void iyxmit(struct iy_softc *); static void iy_mc_setup(struct iy_softc *); static void iy_mc_reset(struct iy_softc *); void iyget(struct iy_softc *, bus_space_tag_t, bus_space_handle_t, int); void iyprobemem(struct iy_softc *); static inline void eepromwritebit(bus_space_tag_t, bus_space_handle_t, int); static inline int eepromreadbit(bus_space_tag_t, bus_space_handle_t); #ifdef IYDEBUGX void print_rbd(volatile struct iy_recv_buf_desc *); int in_ifrint = 0; int in_iftint = 0; #endif int iy_mediachange(struct ifnet *); void iy_mediastatus(struct ifnet *, struct ifmediareq *); int iyprobe(device_t, cfdata_t, void *); void iyattach(device_t, device_t, void *); static u_int16_t eepromread(bus_space_tag_t, bus_space_handle_t, int); static int eepromreadall(bus_space_tag_t, bus_space_handle_t, u_int16_t *, int); CFATTACH_DECL_NEW(iy, sizeof(struct iy_softc), iyprobe, iyattach, NULL, NULL); static u_int8_t eepro_irqmap[] = EEPP_INTMAP; static u_int8_t eepro_revirqmap[] = EEPP_RINTMAP; int iyprobe(device_t parent, cfdata_t match, void *aux) { struct isa_attach_args *ia = aux; u_int16_t eaddr[8]; bus_space_tag_t iot; bus_space_handle_t ioh; u_int8_t c, d; int irq; if (ia->ia_nio < 1) return (0); if (ia->ia_nirq < 1) return (0); if (ISA_DIRECT_CONFIG(ia)) return (0); iot = ia->ia_iot; if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) return 0; if (bus_space_map(iot, ia->ia_io[0].ir_addr, 16, 0, &ioh)) return 0; /* try to find the round robin sig: */ c = bus_space_read_1(iot, ioh, ID_REG); if ((c & ID_REG_MASK) != ID_REG_SIG) goto out; d = bus_space_read_1(iot, ioh, ID_REG); if ((d & ID_REG_MASK) != ID_REG_SIG) goto out; if (((d-c) & R_ROBIN_BITS) != 0x40) goto out; d = bus_space_read_1(iot, ioh, ID_REG); if ((d & ID_REG_MASK) != ID_REG_SIG) goto out; if (((d-c) & R_ROBIN_BITS) != 0x80) goto out; d = bus_space_read_1(iot, ioh, ID_REG); if ((d & ID_REG_MASK) != ID_REG_SIG) goto out; if (((d-c) & R_ROBIN_BITS) != 0xC0) goto out; d = bus_space_read_1(iot, ioh, ID_REG); if ((d & ID_REG_MASK) != ID_REG_SIG) goto out; if (((d-c) & R_ROBIN_BITS) != 0x00) goto out; #ifdef IYDEBUG printf("iyprobe verified working ID reg.\n"); #endif if (eepromreadall(iot, ioh, eaddr, 8)) goto out; if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) irq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; else irq = ia->ia_irq[0].ir_irq; if (irq >= sizeof(eepro_revirqmap)) goto out; if (eepro_revirqmap[irq] == 0xff) goto out; /* now lets reset the chip */ bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); delay(200); ia->ia_nio = 1; ia->ia_io[0].ir_size = 16; ia->ia_nirq = 1; ia->ia_irq[0].ir_irq = irq; ia->ia_niomem = 0; ia->ia_ndrq = 0; bus_space_unmap(iot, ioh, 16); return 1; /* found */ out: bus_space_unmap(iot, ioh, 16); return 0; } void iyattach(device_t parent, device_t self, void *aux) { struct iy_softc *sc = device_private(self); struct isa_attach_args *ia = aux; struct ifnet *ifp = &sc->sc_ethercom.ec_if; bus_space_tag_t iot; bus_space_handle_t ioh; unsigned temp; u_int16_t eaddr[8]; u_int8_t myaddr[ETHER_ADDR_LEN]; int eirq; sc->sc_dev = self; iot = ia->ia_iot; if (bus_space_map(iot, ia->ia_io[0].ir_addr, 16, 0, &ioh)) { aprint_error(": can't map i/o space\n"); return; } sc->sc_iot = iot; sc->sc_ioh = ioh; sc->mappedirq = eepro_revirqmap[ia->ia_irq[0].ir_irq]; /* now let's reset the chip */ bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); delay(200); iyprobemem(sc); strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); ifp->if_softc = sc; ifp->if_start = iystart; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; sc->doing_mc_setup = 0; ifp->if_ioctl = iyioctl; ifp->if_watchdog = iywatchdog; IFQ_SET_READY(&ifp->if_snd); (void)eepromreadall(iot, ioh, eaddr, 8); sc->hard_vers = eaddr[EEPW6] & EEPP_BoardRev; #ifdef DIAGNOSTICS if ((eaddr[EEPPEther0] != eepromread(iot, ioh, EEPPEther0a)) && (eaddr[EEPPEther1] != eepromread(iot, ioh, EEPPEther1a)) && (eaddr[EEPPEther2] != eepromread(iot, ioh, EEPPEther2a))) aprint_error("EEPROM Ethernet address differs from copy\n"); #endif myaddr[1] = eaddr[EEPPEther0] & 0xFF; myaddr[0] = eaddr[EEPPEther0] >> 8; myaddr[3] = eaddr[EEPPEther1] & 0xFF; myaddr[2] = eaddr[EEPPEther1] >> 8; myaddr[5] = eaddr[EEPPEther2] & 0xFF; myaddr[4] = eaddr[EEPPEther2] >> 8; ifmedia_init(&sc->iy_ifmedia, 0, iy_mediachange, iy_mediastatus); ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_2, 0, NULL); ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_5, 0, NULL); ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_10_T, 0, NULL); ifmedia_add(&sc->iy_ifmedia, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->iy_ifmedia, IFM_ETHER | IFM_AUTO); /* Attach the interface. */ if_attach(ifp); ether_ifattach(ifp, myaddr); aprint_normal(": address %s, rev. %d, %d kB\n", ether_sprintf(myaddr), sc->hard_vers, sc->sram/1024); eirq = eepro_irqmap[eaddr[EEPPW1] & EEPP_Int]; if (eirq != ia->ia_irq[0].ir_irq) aprint_error("%s: EEPROM irq setting %d ignored\n", device_xname(sc->sc_dev), eirq); sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, IST_EDGE, IPL_NET, iyintr, sc); rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), RND_TYPE_NET, RND_FLAG_DEFAULT); temp = bus_space_read_1(iot, ioh, INT_NO_REG); bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); } void iystop(struct iy_softc *sc) { bus_space_tag_t iot; bus_space_handle_t ioh; #ifdef IYDEBUG u_int p, v; #endif iot = sc->sc_iot; ioh = sc->sc_ioh; bus_space_write_1(iot, ioh, COMMAND_REG, RCV_DISABLE_CMD); bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); bus_space_write_1(iot, ioh, COMMAND_REG, RESET_CMD); delay(200); #ifdef IYDEBUG printf("%s: dumping tx chain (st 0x%x end 0x%x last 0x%x)\n", device_xname(sc->sc_dev), sc->tx_start, sc->tx_end, sc->tx_last); p = sc->tx_last; if (!p) p = sc->tx_start; do { char sbuf[128]; bus_space_write_2(iot, ioh, HOST_ADDR_REG, p); v = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); snprintb(sbuf, sizeof(sbuf), "\020\006Ab\010Dn", v); printf("0x%04x: %s ", p, sbuf); v = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); snprintb(sbuf, sizeof(sbuf), "\020\6MAX_COL\7HRT_BEAT\010TX_DEF\011UND_RUN" "\012JERR\013LST_CRS\014LTCOL\016TX_OK\020COLL", v); printf("%s", sbuf); p = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); printf(" 0x%04x", p); v = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); snprintb(sbuf, sizeof(sbuf), "\020\020Ch", v); printf(" %s\n", sbuf); } while (v & 0x8000); #endif sc->tx_start = sc->tx_end = sc->rx_size; sc->tx_last = 0; sc->sc_ethercom.ec_if.if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); } void iyreset(struct iy_softc *sc) { int s; s = splnet(); iystop(sc); iyinit(sc); splx(s); } void iyinit(struct iy_softc *sc) { int i; unsigned temp; struct ifnet *ifp; bus_space_tag_t iot; bus_space_handle_t ioh; iot = sc->sc_iot; ioh = sc->sc_ioh; ifp = &sc->sc_ethercom.ec_if; #ifdef IYDEBUG printf("ifp is %p\n", ifp); #endif bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); temp = bus_space_read_1(iot, ioh, EEPROM_REG); if (temp & 0x10) bus_space_write_1(iot, ioh, EEPROM_REG, temp & ~0x10); for (i=0; i<6; ++i) { bus_space_write_1(iot, ioh, I_ADD(i), CLLADDR(ifp->if_sadl)[i]); } temp = bus_space_read_1(iot, ioh, REG1); bus_space_write_1(iot, ioh, REG1, temp | /* XMT_CHAIN_INT | XMT_CHAIN_ERRSTOP | */ RCV_DISCARD_BAD); if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) { temp = MATCH_ALL; } else temp = MATCH_BRDCST; bus_space_write_1(iot, ioh, RECV_MODES_REG, temp); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\1PRMSC\2NOBRDST\3SEECRC\4LENGTH\5NOSaIns\6MultiIA", temp); printf("%s: RECV_MODES set to %s\n", device_xname(sc->sc_dev), sbuf); } #endif /* XXX VOODOO */ temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); /* XXX END OF VOODOO */ delay(500000); /* for the hardware to test for the connector */ temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC", temp); printf("%s: media select was %s ", device_xname(sc->sc_dev), sbuf); } #endif temp = (temp & TEST_MODE_MASK); switch(IFM_SUBTYPE(sc->iy_ifmedia.ifm_media)) { case IFM_10_5: temp &= ~ (BNC_BIT | TPE_BIT); break; case IFM_10_2: temp = (temp & ~TPE_BIT) | BNC_BIT; break; case IFM_10_T: temp = (temp & ~BNC_BIT) | TPE_BIT; break; default: ; /* nothing; leave as it is */ } switch (temp & (BNC_BIT | TPE_BIT)) { case BNC_BIT: sc->iy_media = IFM_ETHER | IFM_10_2; break; case TPE_BIT: sc->iy_media = IFM_ETHER | IFM_10_T; break; default: sc->iy_media = IFM_ETHER | IFM_10_5; } bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\1LnkInDis\2PolCor\3TPE\4JabberDis\5NoAport\6BNC", temp); printf("changed to %s\n", sbuf); } #endif bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS); bus_space_write_1(iot, ioh, 0, BANK_SEL(1)); temp = bus_space_read_1(iot, ioh, INT_NO_REG); bus_space_write_1(iot, ioh, INT_NO_REG, (temp & 0xf8) | sc->mappedirq); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\4bad_irq\010flash/boot present", temp); printf("%s: int no was %s\n", device_xname(sc->sc_dev), sbuf); temp = bus_space_read_1(iot, ioh, INT_NO_REG); snprintb(sbuf, sizeof(sbuf), "\020\4bad_irq\010flash/boot present", temp); printf("%s: int no now %s\n", device_xname(sc->sc_dev), sbuf); } #endif bus_space_write_1(iot, ioh, RCV_LOWER_LIMIT_REG, 0); bus_space_write_1(iot, ioh, RCV_UPPER_LIMIT_REG, (sc->rx_size -2) >>8); bus_space_write_1(iot, ioh, XMT_LOWER_LIMIT_REG, sc->rx_size >>8); bus_space_write_1(iot, ioh, XMT_UPPER_LIMIT_REG, (sc->sram - 2) >>8); temp = bus_space_read_1(iot, ioh, REG1); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\2WORD_WIDTH\010INT_ENABLE", temp); printf("%s: HW access is %s\n", device_xname(sc->sc_dev), sbuf); } #endif bus_space_write_1(iot, ioh, REG1, temp | INT_ENABLE); /* XXX what about WORD_WIDTH? */ #ifdef IYDEBUG { char sbuf[128]; temp = bus_space_read_1(iot, ioh, REG1); snprintb(sbuf, sizeof(sbuf), "\020\2WORD_WIDTH\010INT_ENABLE", temp); printf("%s: HW access is %s\n", device_xname(sc->sc_dev), sbuf); } #endif bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); bus_space_write_1(iot, ioh, INT_MASK_REG, ALL_INTS & ~(RX_BIT|TX_BIT)); bus_space_write_1(iot, ioh, STATUS_REG, ALL_INTS); /* clear ints */ bus_space_write_1(iot, ioh, RCV_COPY_THRESHOLD, 0); bus_space_write_2(iot, ioh, RCV_START_LOW, 0); bus_space_write_2(iot, ioh, RCV_STOP_LOW, sc->rx_size - 2); sc->rx_start = 0; bus_space_write_1(iot, ioh, 0, SEL_RESET_CMD); delay(200); bus_space_write_2(iot, ioh, XMT_ADDR_REG, sc->rx_size); sc->tx_start = sc->tx_end = sc->rx_size; sc->tx_last = 0; bus_space_write_1(iot, ioh, 0, RCV_ENABLE_CMD); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; } void iystart(struct ifnet *ifp) { struct iy_softc *sc; struct mbuf *m0, *m; u_int len, pad, last, end; u_int llen, residual; int avail; char *data; unsigned temp; u_int16_t resval, stat; bus_space_tag_t iot; bus_space_handle_t ioh; #ifdef IYDEBUG printf("iystart called\n"); #endif sc = ifp->if_softc; if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) return; iy_intr_tx(sc); iot = sc->sc_iot; ioh = sc->sc_ioh; for (;;) { IFQ_POLL(&ifp->if_snd, m0); if (m0 == NULL) break; #ifdef IYDEBUG printf("%s: trying to write another packet to the hardware\n", device_xname(sc->sc_dev)); #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", device_xname(sc->sc_dev), len); #endif if (len < (ETHER_MIN_LEN - ETHER_CRC_LEN)) { pad = ETHER_MIN_LEN - ETHER_CRC_LEN - len; } if (len + pad > ETHER_MAX_LEN) { /* packet is obviously too large: toss it */ ++ifp->if_oerrors; IFQ_DEQUEUE(&ifp->if_snd, m0); m_freem(m0); continue; } bpf_mtap(ifp, m0); avail = sc->tx_start - sc->tx_end; if (avail <= 0) avail += sc->tx_size; #ifdef IYDEBUG printf("%s: avail is %d.\n", device_xname(sc->sc_dev), 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) { #ifdef IYDEBUG printf("%s: len = %d, avail = %d, setting OACTIVE\n", device_xname(sc->sc_dev), len, avail); #endif /* mark interface as full ... */ ifp->if_flags |= IFF_OACTIVE; /* and wait for any transmission result */ bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); temp = bus_space_read_1(iot, ioh, REG1); bus_space_write_1(iot, ioh, REG1, temp & ~XMT_CHAIN_INT); bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); return; } /* we know it fits in the hardware now, so dequeue it */ IFQ_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; } bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, htole16(XMT_CMD)); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, htole16(len + pad)); residual = resval = 0; while ((m = m0)!=0) { data = mtod(m, void *); llen = m->m_len; if (residual) { #ifdef IYDEBUG printf("%s: merging residual with next mbuf.\n", device_xname(sc->sc_dev)); #endif resval |= *data << 8; bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, resval); --llen; ++data; } /* * XXX ALIGNMENT LOSSAGE HERE. */ if (llen > 1) bus_space_write_multi_stream_2(iot, ioh, MEM_PORT_REG, (u_int16_t *) data, llen>>1); residual = llen & 1; if (residual) { resval = *(data + llen - 1); #ifdef IYDEBUG printf("%s: got odd mbuf to send.\n", device_xname(sc->sc_dev)); #endif } m0 = m_free(m); } if (residual) bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, resval); pad >>= 1; while (pad-- > 0) bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, 0); #ifdef IYDEBUG printf("%s: new last = 0x%x, end = 0x%x.\n", device_xname(sc->sc_dev), last, end); printf("%s: old start = 0x%x, end = 0x%x, last = 0x%x\n", device_xname(sc->sc_dev), sc->tx_start, sc->tx_end, sc->tx_last); #endif if (sc->tx_start != sc->tx_end) { bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_COUNT); /* * XXX We keep stat in le order, to potentially save * a byte swap. */ stat = bus_space_read_stream_2(iot, ioh, MEM_PORT_REG); bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_last + XMT_CHAIN); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, htole16(last)); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, stat | htole16(CHAIN)); #ifdef IYDEBUG printf("%s: setting 0x%x to 0x%x\n", device_xname(sc->sc_dev), sc->tx_last + XMT_COUNT, le16toh(stat) | CHAIN); #endif } stat = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ /* XXX todo: enable ints here if disabled */ ++ifp->if_opackets; if (sc->tx_start == sc->tx_end) { bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); bus_space_write_1(iot, ioh, 0, XMT_CMD); sc->tx_start = last; #ifdef IYDEBUG printf("%s: writing 0x%x to XAR and giving XCMD\n", device_xname(sc->sc_dev), last); #endif } else { bus_space_write_1(iot, ioh, 0, RESUME_XMT_CMD); #ifdef IYDEBUG printf("%s: giving RESUME_XCMD\n", device_xname(sc->sc_dev)); #endif } sc->tx_last = last; sc->tx_end = end; } /* and wait only for end of transmission chain */ bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); temp = bus_space_read_1(iot, ioh, REG1); bus_space_write_1(iot, ioh, REG1, temp | XMT_CHAIN_INT); bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); } static inline void eepromwritebit(bus_space_tag_t iot, bus_space_handle_t ioh, int what) { bus_space_write_1(iot, ioh, EEPROM_REG, what); delay(1); bus_space_write_1(iot, ioh, EEPROM_REG, what|EESK); delay(1); bus_space_write_1(iot, ioh, EEPROM_REG, what); delay(1); } static inline int eepromreadbit(bus_space_tag_t iot, bus_space_handle_t ioh) { int b; bus_space_write_1(iot, ioh, EEPROM_REG, EECS|EESK); delay(1); b = bus_space_read_1(iot, ioh, EEPROM_REG); bus_space_write_1(iot, ioh, EEPROM_REG, EECS); delay(1); return ((b & EEDO) != 0); } static u_int16_t eepromread(bus_space_tag_t iot, bus_space_handle_t ioh, int offset) { volatile int i; volatile int j; volatile u_int16_t readval; bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); delay(1); bus_space_write_1(iot, ioh, EEPROM_REG, EECS); /* XXXX??? */ delay(1); eepromwritebit(iot, ioh, EECS|EEDI); eepromwritebit(iot, ioh, EECS|EEDI); eepromwritebit(iot, ioh, EECS); for (j=5; j>=0; --j) { if ((offset>>j) & 1) eepromwritebit(iot, ioh, EECS|EEDI); else eepromwritebit(iot, ioh, EECS); } for (readval=0, i=0; i<16; ++i) { readval<<=1; readval |= eepromreadbit(iot, ioh); } bus_space_write_1(iot, ioh, EEPROM_REG, 0|EESK); delay(1); bus_space_write_1(iot, ioh, EEPROM_REG, 0); bus_space_write_1(iot, ioh, COMMAND_REG, 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(struct ifnet *ifp) { struct iy_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", device_xname(sc->sc_dev)); ++sc->sc_ethercom.ec_if.if_oerrors; iyreset(sc); } /* * What to do upon receipt of an interrupt. */ int iyintr(void *arg) { struct iy_softc *sc; struct ifnet *ifp; bus_space_tag_t iot; bus_space_handle_t ioh; u_short status; sc = arg; iot = sc->sc_iot; ioh = sc->sc_ioh; ifp = &sc->sc_ethercom.ec_if; status = bus_space_read_1(iot, ioh, STATUS_REG); #ifdef IYDEBUG if (status & ALL_INTS) { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\1RX_STP\2RX\3TX\4EXEC", status); printf("%s: got interrupt %s", device_xname(sc->sc_dev), sbuf); if (status & EXEC_INT) { snprintb(sbuf, sizeof(sbuf), "\020\6ABORT", bus_space_read_1(iot, ioh, 0)); printf(" event %s\n", sbuf); } else printf("\n"); } #endif if ((status & (RX_INT | TX_INT)) == 0) return 0; if (status & RX_INT) { iy_intr_rx(sc); bus_space_write_1(iot, ioh, STATUS_REG, RX_INT); } if (status & TX_INT) { /* Tell feeders we may be able to accept more data... */ ifp->if_flags &= ~IFF_OACTIVE; /* and get more data. */ iystart(ifp); bus_space_write_1(iot, ioh, STATUS_REG, TX_INT); } rnd_add_uint32(&sc->rnd_source, status); return 1; } void iyget(struct iy_softc *sc, bus_space_tag_t iot, bus_space_handle_t ioh, int rxlen) { struct mbuf *m, *top, **mp; struct ifnet *ifp; int len; ifp = &sc->sc_ethercom.ec_if; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == 0) goto dropped; m_set_rcvif(m, ifp); m->m_pkthdr.len = rxlen; len = MHLEN; top = 0; mp = ⊤ while (rxlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == 0) { m_freem(top); goto dropped; } len = MLEN; } if (rxlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { m_free(m); m_freem(top); goto dropped; } len = MCLBYTES; } len = min(rxlen, len); /* * XXX ALIGNMENT LOSSAGE HERE. */ if (len > 1) { len &= ~1; bus_space_read_multi_stream_2(iot, ioh, MEM_PORT_REG, mtod(m, u_int16_t *), len/2); } else { #ifdef IYDEBUG printf("%s: received odd mbuf\n", device_xname(sc->sc_dev)); #endif *(mtod(m, char *)) = bus_space_read_stream_2(iot, ioh, MEM_PORT_REG); } m->m_len = len; rxlen -= len; *mp = m; mp = &m->m_next; } if (top == NULL) return; if_percpuq_enqueue(ifp->if_percpuq, top); return; dropped: ++ifp->if_ierrors; return; } void iy_intr_rx(struct iy_softc *sc) { bus_space_tag_t iot; bus_space_handle_t ioh; u_int rxadrs, rxevnt, rxstatus, rxnext, rxlen; iot = sc->sc_iot; ioh = sc->sc_ioh; rxadrs = sc->rx_start; bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxadrs); rxevnt = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); rxnext = 0; while (rxevnt == RCV_DONE) { rxstatus = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); rxnext = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); rxlen = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\1RCLD\2IA_MCH\010SHORT\011OVRN\013ALGERR" "\014CRCERR\015LENERR\016RCVOK\020TYP", rxstatus); printf("%s: pck at 0x%04x stat %s next 0x%x len 0x%x\n", device_xname(sc->sc_dev), rxadrs, sbuf, rxnext, rxlen); } #else __USE(rxstatus); #endif iyget(sc, iot, ioh, rxlen); /* move stop address */ bus_space_write_2(iot, ioh, RCV_STOP_LOW, rxnext == 0 ? sc->rx_size - 2 : rxnext - 2); bus_space_write_2(iot, ioh, HOST_ADDR_REG, rxnext); rxadrs = rxnext; rxevnt = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); } sc->rx_start = rxnext; } void iy_intr_tx(struct iy_softc *sc) { bus_space_tag_t iot; bus_space_handle_t ioh; struct ifnet *ifp; u_int txstatus, txstat2, txlen, txnext; ifp = &sc->sc_ethercom.ec_if; iot = sc->sc_iot; ioh = sc->sc_ioh; while (sc->tx_start != sc->tx_end) { bus_space_write_2(iot, ioh, HOST_ADDR_REG, sc->tx_start); txstatus = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); if ((txstatus & (TX_DONE|CMD_MASK)) != (TX_DONE|XMT_CMD)) break; txstat2 = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); txnext = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); txlen = le16toh(bus_space_read_stream_2(iot, ioh, MEM_PORT_REG)); #ifdef IYDEBUG { char sbuf[128]; snprintb(sbuf, sizeof(sbuf), "\020\6MAX_COL\7HRT_BEAT\010TX_DEF" "\011UND_RUN\012JERR\013LST_CRS" "\014LTCOL\016TX_OK\020COLL", txstat2); printf("txstat 0x%x stat2 %s next 0x%x len 0x%x\n", txstatus, sbuf, txnext, txlen); } #endif if (txlen & CHAIN) sc->tx_start = txnext; else sc->tx_start = sc->tx_end; ifp->if_flags &= ~IFF_OACTIVE; if (txstat2 & 0x0020) ifp->if_collisions += 16; else ifp->if_collisions += txstat2 & 0x000f; if ((txstat2 & 0x2000) == 0) ++ifp->if_oerrors; } } int iyioctl(struct ifnet *ifp, u_long cmd, void *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 %p (%s) cmd 0x%lx data %p\n", ifp, ifp->if_xname, cmd, data); #endif s = splnet(); switch (cmd) { case SIOCINITIFADDR: ifp->if_flags |= IFF_UP; iyinit(sc); switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: arp_ifinit(ifp, ifa); break; #endif default: break; } break; case SIOCSIFFLAGS: if ((error = ifioctl_common(ifp, cmd, data)) != 0) break; sc->promisc = ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI); /* XXX re-use ether_ioctl() */ switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { case IFF_RUNNING: /* * If interface is marked down and it is running, then * stop it. */ iystop(sc); ifp->if_flags &= ~IFF_RUNNING; break; case IFF_UP: /* * If interface is marked up and it is stopped, then * start it. */ iyinit(sc); break; default: /* * Reset the interface to pick up changes in any other * flags that affect hardware registers. */ iystop(sc); iyinit(sc); break; } #ifdef IYDEBUGX if (ifp->if_flags & IFF_DEBUG) sc->sc_debug = IFY_ALL; else sc->sc_debug = 0; #endif break; case SIOCADDMULTI: case SIOCDELMULTI: if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { /* * Multicast list has changed; set the hardware filter * accordingly. */ if (ifp->if_flags & IFF_RUNNING) { /* XXX can't make it work otherwise */ iyreset(sc); iy_mc_reset(sc); } error = 0; } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->iy_ifmedia, cmd); break; default: error = ether_ioctl(ifp, cmd, data); } splx(s); return error; } int iy_mediachange(struct ifnet *ifp) { struct iy_softc *sc = ifp->if_softc; if (IFM_TYPE(sc->iy_ifmedia.ifm_media) != IFM_ETHER) return EINVAL; switch(IFM_SUBTYPE(sc->iy_ifmedia.ifm_media)) { case IFM_10_5: case IFM_10_2: case IFM_10_T: case IFM_AUTO: iystop(sc); iyinit(sc); return 0; default: return EINVAL; } } void iy_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) { struct iy_softc *sc = ifp->if_softc; ifmr->ifm_active = sc->iy_media; ifmr->ifm_status = IFM_AVALID | IFM_ACTIVE; } static void iy_mc_setup(struct iy_softc *sc) { struct ether_multi *enm; struct ether_multistep step; struct ethercom *ecp; struct ifnet *ifp; bus_space_tag_t iot; bus_space_handle_t ioh; int avail, last /*, end*/ , len; int timeout; volatile u_int16_t dum; u_int8_t temp; ecp = &sc->sc_ethercom; ifp = &ecp->ec_if; iot = sc->sc_iot; ioh = sc->sc_ioh; len = 6 * ecp->ec_multicnt; avail = sc->tx_start - sc->tx_end; if (avail <= 0) avail += sc->tx_size; if (ifp->if_flags & IFF_DEBUG) printf("%s: iy_mc_setup called, %d addresses, " "%d/%d bytes needed/avail\n", ifp->if_xname, ecp->ec_multicnt, len + I595_XMT_HDRLEN, avail); last = sc->rx_size; bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); bus_space_write_1(iot, ioh, RECV_MODES_REG, MATCH_BRDCST); /* XXX VOODOO */ temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); /* XXX END OF VOODOO */ bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); bus_space_write_2(iot, ioh, HOST_ADDR_REG, last); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, htole16(MC_SETUP_CMD)); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); bus_space_write_stream_2(iot, ioh, MEM_PORT_REG, htole16(len)); ETHER_FIRST_MULTI(step, ecp, enm); while(enm) { /* * XXX ALIGNMENT LOSSAGE HERE? */ bus_space_write_multi_stream_2(iot, ioh, MEM_PORT_REG, (u_int16_t *) enm->enm_addrlo, 3); ETHER_NEXT_MULTI(step, enm); } dum = bus_space_read_2(iot, ioh, MEM_PORT_REG); /* dummy read */ __USE(dum); bus_space_write_2(iot, ioh, XMT_ADDR_REG, last); bus_space_write_1(iot, ioh, 0, MC_SETUP_CMD); sc->tx_start = sc->rx_size; sc->tx_end = sc->rx_size + I595_XMT_HDRLEN + len; for (timeout=0; timeout<100; timeout++) { DELAY(2); if ((bus_space_read_1(iot, ioh, STATUS_REG) & EXEC_INT) == 0) continue; temp = bus_space_read_1(iot, ioh, 0); bus_space_write_1(iot, ioh, STATUS_REG, EXEC_INT); #ifdef DIAGNOSTIC if (temp & 0x20) { aprint_error_dev(sc->sc_dev, "mc setup failed, %d usec\n", timeout * 2); } else if (((temp & 0x0f) == 0x03) && (ifp->if_flags & IFF_DEBUG)) { printf("%s: mc setup done, %d usec\n", device_xname(sc->sc_dev), timeout * 2); } #endif break; } sc->tx_start = sc->tx_end; ifp->if_flags &= ~IFF_OACTIVE; } static void iy_mc_reset(struct iy_softc *sc) { struct ether_multi *enm; struct ether_multistep step; struct ethercom *ecp; struct ifnet *ifp; bus_space_tag_t iot; bus_space_handle_t ioh; u_int16_t temp; ecp = &sc->sc_ethercom; ifp = &ecp->ec_if; iot = sc->sc_iot; ioh = sc->sc_ioh; if (ecp->ec_multicnt > 63) { ifp->if_flags |= IFF_ALLMULTI; } else if (ecp->ec_multicnt > 0) { /* * Step through the list of addresses. */ ETHER_FIRST_MULTI(step, ecp, enm); while(enm) { if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 6) != 0) { ifp->if_flags |= IFF_ALLMULTI; goto setupmulti; } ETHER_NEXT_MULTI(step, enm); } /* OK, we really need to do it now: */ #if 0 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) { ifp->if_flags |= IFF_OACTIVE; sc->want_mc_setup = 1; return; } #endif iy_mc_setup(sc); } else { ifp->if_flags &= ~IFF_ALLMULTI; } setupmulti: bus_space_write_1(iot, ioh, 0, BANK_SEL(2)); if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) { temp = MATCH_ALL; } else temp = MATCH_BRDCST; bus_space_write_1(iot, ioh, RECV_MODES_REG, temp); /* XXX VOODOO */ temp = bus_space_read_1(iot, ioh, MEDIA_SELECT); bus_space_write_1(iot, ioh, MEDIA_SELECT, temp); /* XXX END OF VOODOO */ /* XXX TBD: setup hardware for all multicasts */ bus_space_write_1(iot, ioh, 0, BANK_SEL(0)); return; } #ifdef IYDEBUGX void print_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 void iyprobemem(struct iy_softc *sc) { bus_space_tag_t iot; bus_space_handle_t ioh; int testing; iot = sc->sc_iot; ioh = sc->sc_ioh; bus_space_write_1(iot, ioh, COMMAND_REG, BANK_SEL(0)); delay(1); bus_space_write_2(iot, ioh, HOST_ADDR_REG, 4096-2); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); for (testing=65536; testing >= 4096; testing >>= 1) { bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xdead); bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xdead) { #ifdef IYMEMDEBUG printf("%s: Didn't keep 0xdead at 0x%x\n", device_xname(sc->sc_dev), testing-2); #endif continue; } bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0xbeef); bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing-2); if (bus_space_read_2(iot, ioh, MEM_PORT_REG) != 0xbeef) { #ifdef IYMEMDEBUG printf("%s: Didn't keep 0xbeef at 0x%x\n", device_xname(sc->sc_dev), testing-2); #endif continue; } bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); bus_space_write_2(iot, ioh, MEM_PORT_REG, 0); bus_space_write_2(iot, ioh, HOST_ADDR_REG, testing >> 1); bus_space_write_2(iot, ioh, MEM_PORT_REG, testing >> 1); bus_space_write_2(iot, ioh, HOST_ADDR_REG, 0); if (bus_space_read_2(iot, ioh, MEM_PORT_REG) == (testing >> 1)) { #ifdef IYMEMDEBUG printf("%s: 0x%x alias of 0x0\n", device_xname(sc->sc_dev), 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; } static int eepromreadall(bus_space_tag_t iot, bus_space_handle_t ioh, u_int16_t *wordp, int maxi) { int i; u_int16_t checksum, tmp; checksum = 0; for (i=0; i