/* $OpenBSD: if_xe.c,v 1.58 2016/04/13 10:49:26 mpi Exp $ */ /* * Copyright (c) 1999 Niklas Hallqvist, Brandon Creighton, Job de Haas * 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 includes software developed by Niklas Hallqvist, * C Stone and Job de Haas. * 4. The name 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. */ /* * A driver for Xircom ethernet PC-cards. * * The driver has been inspired by the xirc2ps_cs.c driver found in Linux' * PCMCIA package written by Werner Koch : * [xirc2ps_cs.c wk 14.04.97] (1.31 1998/12/09 19:32:55) * I will note that no code was used verbatim from that driver as it is under * the much too strong GNU General Public License, it was only used as a * "specification" of sorts. * Other inspirations have been if_fxp.c, if_ep_pcmcia.c and elink3.c as * they were found in OpenBSD 2.4. */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif /* * Maximum number of bytes to read per interrupt. Linux recommends * somewhere between 2000-22000. * XXX This is currently a hard maximum. */ #define MAX_BYTES_INTR 12000 #include #include #include #include #include #ifdef __GNUC__ #define INLINE __inline #else #define INLINE #endif /* __GNUC__ */ #ifdef XEDEBUG #define XED_CONFIG 0x1 #define XED_MII 0x2 #define XED_INTR 0x4 #define XED_FIFO 0x8 #ifndef XEDEBUG_DEF #define XEDEBUG_DEF (XED_CONFIG|XED_INTR) #endif /* XEDEBUG_DEF */ int xedebug = XEDEBUG_DEF; #define DPRINTF(cat, x) if (xedebug & (cat)) printf x #else /* XEDEBUG */ #define DPRINTF(cat, x) (void)0 #endif /* XEDEBUG */ int xe_pcmcia_match(struct device *, void *, void *); void xe_pcmcia_attach(struct device *, struct device *, void *); int xe_pcmcia_detach(struct device *, int); int xe_pcmcia_activate(struct device *, int); /* * In case this chipset ever turns up out of pcmcia attachments (very * unlikely) do the driver splitup. */ struct xe_softc { struct device sc_dev; /* Generic device info */ u_int32_t sc_flags; /* Misc. flags */ void *sc_ih; /* Interrupt handler */ struct arpcom sc_arpcom; /* Ethernet common part */ struct ifmedia sc_media; /* Media control */ struct mii_data sc_mii; /* MII media information */ int sc_all_mcasts; /* Receive all multicasts */ bus_space_tag_t sc_bst; /* Bus cookie */ bus_space_handle_t sc_bsh; /* Bus I/O handle */ bus_size_t sc_offset; /* Offset of registers */ u_int8_t sc_rev; /* Chip revision */ }; #define XEF_MOHAWK 0x001 #define XEF_DINGO 0x002 #define XEF_MODEM 0x004 #define XEF_UNSUPPORTED 0x008 #define XEF_CE 0x010 #define XEF_CE2 0x020 #define XEF_CE3 0x040 #define XEF_CE33 0x080 #define XEF_CE56 0x100 struct xe_pcmcia_softc { struct xe_softc sc_xe; /* Generic device info */ struct pcmcia_mem_handle sc_pcmh; /* PCMCIA memspace info */ int sc_mem_window; /* mem window */ struct pcmcia_io_handle sc_pcioh; /* iospace info */ int sc_io_window; /* io window info */ struct pcmcia_function *sc_pf; /* PCMCIA function */ }; /* Autoconfig definition of driver back-end */ struct cfdriver xe_cd = { NULL, "xe", DV_IFNET }; struct cfattach xe_pcmcia_ca = { sizeof (struct xe_pcmcia_softc), xe_pcmcia_match, xe_pcmcia_attach, xe_pcmcia_detach, xe_pcmcia_activate }; void xe_cycle_power(struct xe_softc *); void xe_full_reset(struct xe_softc *); void xe_init(struct xe_softc *); int xe_intr(void *); int xe_ioctl(struct ifnet *, u_long, caddr_t); int xe_mdi_read(struct device *, int, int); void xe_mdi_write(struct device *, int, int, int); int xe_mediachange(struct ifnet *); void xe_mediastatus(struct ifnet *, struct ifmediareq *); int xe_pcmcia_funce_enaddr(struct device *, u_int8_t *); u_int32_t xe_pcmcia_interpret_manfid(struct device *); int xe_pcmcia_lan_nid_ciscallback(struct pcmcia_tuple *, void *); int xe_pcmcia_manfid_ciscallback(struct pcmcia_tuple *, void *); u_int16_t xe_get(struct xe_softc *); void xe_reset(struct xe_softc *); void xe_set_address(struct xe_softc *); void xe_start(struct ifnet *); void xe_statchg(struct device *); void xe_stop(struct xe_softc *); void xe_watchdog(struct ifnet *); #ifdef XEDEBUG void xe_reg_dump(struct xe_softc *); #endif /* XEDEBUG */ int xe_pcmcia_match(parent, match, aux) struct device *parent; void *match, *aux; { struct pcmcia_attach_args *pa = aux; if (pa->pf->function != PCMCIA_FUNCTION_NETWORK) return (0); switch (pa->manufacturer) { case PCMCIA_VENDOR_COMPAQ: case PCMCIA_VENDOR_COMPAQ2: return (0); case PCMCIA_VENDOR_INTEL: case PCMCIA_VENDOR_XIRCOM: /* XXX Per-productid checking here. */ return (1); default: return (0); } } void xe_pcmcia_attach(parent, self, aux) struct device *parent, *self; void *aux; { struct xe_pcmcia_softc *psc = (struct xe_pcmcia_softc *)self; struct xe_softc *sc = &psc->sc_xe; struct pcmcia_attach_args *pa = aux; struct pcmcia_function *pf = pa->pf; struct pcmcia_config_entry *cfe = NULL; struct ifnet *ifp; u_int8_t myla[ETHER_ADDR_LEN], *enaddr = NULL; int state = 0; struct pcmcia_mem_handle pcmh; int ccr_window; bus_size_t ccr_offset; const char *intrstr; psc->sc_pf = pf; #if 0 /* Figure out what card we are. */ sc->sc_flags = xe_pcmcia_interpret_manfid(parent); #endif if (sc->sc_flags & XEF_UNSUPPORTED) { printf(": card unsupported\n"); goto bad; } /* Tell the pcmcia framework where the CCR is. */ pf->ccr_base = 0x800; pf->ccr_mask = 0x67; /* Fake a cfe. */ SIMPLEQ_FIRST(&pa->pf->cfe_head) = cfe = (struct pcmcia_config_entry *) malloc(sizeof *cfe, M_DEVBUF, M_NOWAIT | M_ZERO); if (!cfe) { printf(": function enable failed\n"); return; } /* * XXX Use preprocessor symbols instead. * Enable ethernet & its interrupts, wiring them to -INT * No I/O base. */ cfe->number = 0x5; cfe->flags = 0; /* XXX Check! */ cfe->iftype = PCMCIA_IFTYPE_IO; cfe->num_iospace = 0; cfe->num_memspace = 0; cfe->irqmask = 0x8eb0; /* Enable the card. */ pcmcia_function_init(pa->pf, cfe); if (pcmcia_function_enable(pa->pf)) { printf(": function enable failed\n"); goto bad; } state++; if (pcmcia_io_alloc(pa->pf, 0, 16, 16, &psc->sc_pcioh)) { printf(": io allocation failed\n"); goto bad; } state++; if (pcmcia_io_map(pa->pf, PCMCIA_WIDTH_IO16, 0, 16, &psc->sc_pcioh, &psc->sc_io_window)) { printf(": can't map io space\n"); goto bad; } sc->sc_bst = psc->sc_pcioh.iot; sc->sc_bsh = psc->sc_pcioh.ioh; sc->sc_offset = 0; printf(" port 0x%lx/%d", psc->sc_pcioh.addr, 16); #if 0 if (pcmcia_mem_alloc(pf, 16, &psc->sc_pcmh)) { printf(": pcmcia memory allocation failed\n"); goto bad; } state++; if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, 0x300, 16, &psc->sc_pcmh, &sc->sc_offset, &psc->sc_mem_window)) { printf(": pcmcia memory mapping failed\n"); goto bad; } sc->sc_bst = psc->sc_pcmh.memt; sc->sc_bsh = psc->sc_pcmh.memh; #endif /* Figure out what card we are. */ sc->sc_flags = xe_pcmcia_interpret_manfid(parent); /* * Configuration as advised by DINGO documentation. * We only know about this flag after the manfid interpretation. * Dingo has some extra configuration registers in the CCR space. */ if (sc->sc_flags & XEF_DINGO) { if (pcmcia_mem_alloc(pf, PCMCIA_CCR_SIZE_DINGO, &pcmh)) { DPRINTF(XED_CONFIG, ("bad mem alloc\n")); goto bad; } if (pcmcia_mem_map(pf, PCMCIA_MEM_ATTR, pf->ccr_base, PCMCIA_CCR_SIZE_DINGO, &pcmh, &ccr_offset, &ccr_window)) { DPRINTF(XED_CONFIG, ("bad mem map\n")); pcmcia_mem_free(pf, &pcmh); goto bad; } bus_space_write_1(pcmh.memt, pcmh.memh, ccr_offset + PCMCIA_CCR_DCOR0, PCMCIA_CCR_DCOR0_SFINT); bus_space_write_1(pcmh.memt, pcmh.memh, ccr_offset + PCMCIA_CCR_DCOR1, PCMCIA_CCR_DCOR1_FORCE_LEVIREQ | PCMCIA_CCR_DCOR1_D6); bus_space_write_1(pcmh.memt, pcmh.memh, ccr_offset + PCMCIA_CCR_DCOR2, 0); bus_space_write_1(pcmh.memt, pcmh.memh, ccr_offset + PCMCIA_CCR_DCOR3, 0); bus_space_write_1(pcmh.memt, pcmh.memh, ccr_offset + PCMCIA_CCR_DCOR4, 0); /* We don't need them anymore and can free them (I think). */ pcmcia_mem_unmap(pf, ccr_window); pcmcia_mem_free(pf, &pcmh); } /* * Try to get the ethernet address from FUNCE/LAN_NID tuple. */ if (xe_pcmcia_funce_enaddr(parent, myla)) enaddr = myla; ifp = &sc->sc_arpcom.ac_if; if (enaddr) bcopy(enaddr, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); else { printf(", unable to get ethernet address\n"); goto bad; } bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = xe_ioctl; ifp->if_start = xe_start; ifp->if_watchdog = xe_watchdog; /* Establish the interrupt. */ sc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_NET, xe_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_ih == NULL) { printf(", couldn't establish interrupt\n"); goto bad; } intrstr = pcmcia_intr_string(psc->sc_pf, sc->sc_ih); printf("%s%s: address %s\n", *intrstr ? ", " : "", intrstr, ether_sprintf(sc->sc_arpcom.ac_enaddr)); /* Reset and initialize the card. */ xe_full_reset(sc); /* Initialize our media structures and probe the phy. */ sc->sc_mii.mii_ifp = ifp; sc->sc_mii.mii_readreg = xe_mdi_read; sc->sc_mii.mii_writereg = xe_mdi_write; sc->sc_mii.mii_statchg = xe_statchg; ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, xe_mediachange, xe_mediastatus); DPRINTF(XED_MII | XED_CONFIG, ("bmsr %x\n", xe_mdi_read(&sc->sc_dev, 0, 1))); mii_attach(self, &sc->sc_mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER | IFM_AUTO); /* * Attach the interface. */ if_attach(ifp); ether_ifattach(ifp); /* * Reset and initialize the card again for DINGO (as found in Linux * driver). Without this Dingo will get a watchdog timeout the first * time. The ugly media tickling seems to be necessary for getting * autonegotiation to work too. */ if (sc->sc_flags & XEF_DINGO) { xe_full_reset(sc); xe_init(sc); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER | IFM_AUTO); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER | IFM_NONE); xe_stop(sc); } return; bad: if (state > 2) pcmcia_io_unmap(pf, psc->sc_io_window); if (state > 1) pcmcia_io_free(pf, &psc->sc_pcioh); if (state > 0) pcmcia_function_disable(pa->pf); free(cfe, M_DEVBUF, 0); } int xe_pcmcia_detach(dev, flags) struct device *dev; int flags; { struct xe_pcmcia_softc *psc = (struct xe_pcmcia_softc *)dev; struct xe_softc *sc = &psc->sc_xe; struct ifnet *ifp = &sc->sc_arpcom.ac_if; int rv = 0; mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); pcmcia_io_unmap(psc->sc_pf, psc->sc_io_window); pcmcia_io_free(psc->sc_pf, &psc->sc_pcioh); ether_ifdetach(ifp); if_detach(ifp); return (rv); } int xe_pcmcia_activate(dev, act) struct device *dev; int act; { struct xe_pcmcia_softc *sc = (struct xe_pcmcia_softc *)dev; struct ifnet *ifp = &sc->sc_xe.sc_arpcom.ac_if; switch (act) { case DVACT_SUSPEND: if (ifp->if_flags & IFF_RUNNING) xe_stop(&sc->sc_xe); ifp->if_flags &= ~IFF_RUNNING; if (sc->sc_xe.sc_ih) pcmcia_intr_disestablish(sc->sc_pf, sc->sc_xe.sc_ih); sc->sc_xe.sc_ih = NULL; pcmcia_function_disable(sc->sc_pf); break; case DVACT_RESUME: pcmcia_function_enable(sc->sc_pf); sc->sc_xe.sc_ih = pcmcia_intr_establish(sc->sc_pf, IPL_NET, xe_intr, sc, sc->sc_xe.sc_dev.dv_xname); /* XXX this is a ridiculous */ xe_reset(&sc->sc_xe); if ((ifp->if_flags & IFF_UP) == 0) xe_stop(&sc->sc_xe); break; case DVACT_DEACTIVATE: ifp->if_timer = 0; ifp->if_flags &= ~IFF_RUNNING; if (sc->sc_xe.sc_ih) pcmcia_intr_disestablish(sc->sc_pf, sc->sc_xe.sc_ih); sc->sc_xe.sc_ih = NULL; pcmcia_function_disable(sc->sc_pf); break; } return (0); } /* * XXX These two functions might be OK to factor out into pcmcia.c since * if_sm_pcmcia.c uses similar ones. */ int xe_pcmcia_funce_enaddr(parent, myla) struct device *parent; u_int8_t *myla; { /* XXX The Linux driver has more ways to do this in case of failure. */ return (pcmcia_scan_cis(parent, xe_pcmcia_lan_nid_ciscallback, myla)); } int xe_pcmcia_lan_nid_ciscallback(tuple, arg) struct pcmcia_tuple *tuple; void *arg; { u_int8_t *myla = arg; int i; if (tuple->code == PCMCIA_CISTPL_FUNCE) { if (tuple->length < 2) return (0); switch (pcmcia_tuple_read_1(tuple, 0)) { case PCMCIA_TPLFE_TYPE_LAN_NID: if (pcmcia_tuple_read_1(tuple, 1) != ETHER_ADDR_LEN) return (0); break; case 0x02: /* * Not sure about this, I don't have a CE2 * that puts the ethernet addr here. */ if (pcmcia_tuple_read_1(tuple, 1) != 13) return (0); break; default: return (0); } for (i = 0; i < ETHER_ADDR_LEN; i++) myla[i] = pcmcia_tuple_read_1(tuple, i + 2); return (1); } /* Yet another spot where this might be. */ if (tuple->code == 0x89) { pcmcia_tuple_read_1(tuple, 1); for (i = 0; i < ETHER_ADDR_LEN; i++) myla[i] = pcmcia_tuple_read_1(tuple, i + 2); return (1); } return (0); } u_int32_t xe_pcmcia_interpret_manfid (parent) struct device *parent; { u_int32_t flags = 0; struct pcmcia_softc *psc = (struct pcmcia_softc *)parent; char *tptr; if (!pcmcia_scan_cis(parent, xe_pcmcia_manfid_ciscallback, &flags)) return (XEF_UNSUPPORTED); if (flags & XEF_CE) { tptr = memchr(psc->card.cis1_info[2], 'C', strlen(psc->card.cis1_info[2])); /* XXX not sure if other CE2s hide "CE2" in different places */ if (tptr && *(tptr + 1) == 'E' && *(tptr + 2) == '2') { flags ^= (XEF_CE | XEF_UNSUPPORTED); flags |= XEF_CE2; } } return (flags); } int xe_pcmcia_manfid_ciscallback(tuple, arg) struct pcmcia_tuple *tuple; void *arg; { u_int32_t *flagsp = arg; u_int8_t media, product; if (tuple->code == PCMCIA_CISTPL_MANFID) { if (tuple->length < 2) return (0); media = pcmcia_tuple_read_1(tuple, 3); product = pcmcia_tuple_read_1(tuple, 4); if (!(product & XEPROD_CREDITCARD) || !(media & XEMEDIA_ETHER)) { *flagsp |= XEF_UNSUPPORTED; return (1); } if (media & XEMEDIA_MODEM) *flagsp |= XEF_MODEM; switch (product & XEPROD_IDMASK) { case 1: /* XXX Can be CE2 too (we double-check later). */ *flagsp |= XEF_CE | XEF_UNSUPPORTED; break; case 2: *flagsp |= XEF_CE2; break; case 3: if (!(*flagsp & XEF_MODEM)) *flagsp |= XEF_MOHAWK; *flagsp |= XEF_CE3; break; case 4: *flagsp |= XEF_CE33; break; case 5: *flagsp |= XEF_CE56 | XEF_MOHAWK; break; case 6: case 7: *flagsp |= XEF_CE56 | XEF_MOHAWK | XEF_DINGO; break; default: *flagsp |= XEF_UNSUPPORTED; break; } return (1); } return (0); } int xe_intr(arg) void *arg; { struct xe_softc *sc = arg; struct ifnet *ifp = &sc->sc_arpcom.ac_if; u_int8_t esr, rsr, isr, rx_status, savedpage; u_int16_t tx_status, recvcount = 0, tempint; ifp->if_timer = 0; /* turn watchdog timer off */ if (sc->sc_flags & XEF_MOHAWK) { /* Disable interrupt (Linux does it). */ bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + CR, 0); } savedpage = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + PR); PAGE(sc, 0); esr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + ESR); isr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + ISR0); rsr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + RSR); /* Check to see if card has been ejected. */ if (isr == 0xff) { printf("%s: interrupt for dead card\n", sc->sc_dev.dv_xname); goto end; } PAGE(sc, 40); rx_status = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + RXST0); tx_status = bus_space_read_2(sc->sc_bst, sc->sc_bsh, sc->sc_offset + TXST0); /* * XXX Linux writes to RXST0 and TXST* here. My CE2 works just fine * without it, and I can't see an obvious reason for it. */ PAGE(sc, 0); while (esr & FULL_PKT_RCV) { if (!(rsr & RSR_RX_OK)) break; /* Compare bytes read this interrupt to hard maximum. */ if (recvcount > MAX_BYTES_INTR) { DPRINTF(XED_INTR, ("%s: too many bytes this interrupt\n", sc->sc_dev.dv_xname)); ifp->if_iqdrops++; /* Drop packet. */ bus_space_write_2(sc->sc_bst, sc->sc_bsh, sc->sc_offset + DO0, DO_SKIP_RX_PKT); } tempint = xe_get(sc); recvcount += tempint; esr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + ESR); rsr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + RSR); } /* Packet too long? */ if (rsr & RSR_TOO_LONG) { ifp->if_ierrors++; DPRINTF(XED_INTR, ("%s: packet too long\n", sc->sc_dev.dv_xname)); } /* CRC error? */ if (rsr & RSR_CRCERR) { ifp->if_ierrors++; DPRINTF(XED_INTR, ("%s: CRC error detected\n", sc->sc_dev.dv_xname)); } /* Alignment error? */ if (rsr & RSR_ALIGNERR) { ifp->if_ierrors++; DPRINTF(XED_INTR, ("%s: alignment error detected\n", sc->sc_dev.dv_xname)); } /* Check for rx overrun. */ if (rx_status & RX_OVERRUN) { bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + CR, CLR_RX_OVERRUN); DPRINTF(XED_INTR, ("overrun cleared\n")); } /* Try to start more packets transmitting. */ if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) xe_start(ifp); /* Detected excessive collisions? */ if ((tx_status & EXCESSIVE_COLL) && ifp->if_opackets > 0) { DPRINTF(XED_INTR, ("%s: excessive collisions\n", sc->sc_dev.dv_xname)); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + CR, RESTART_TX); ifp->if_oerrors++; } if ((tx_status & TX_ABORT) && ifp->if_opackets > 0) ifp->if_oerrors++; end: /* Reenable interrupts. */ PAGE(sc, savedpage); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + CR, ENABLE_INT); return (1); } u_int16_t xe_get(sc) struct xe_softc *sc; { u_int8_t rsr; struct mbuf *top, **mp, *m; struct mbuf_list ml = MBUF_LIST_INITIALIZER(); struct ifnet *ifp = &sc->sc_arpcom.ac_if; u_int16_t pktlen, len, recvcount = 0; u_int8_t *data; PAGE(sc, 0); rsr = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + RSR); pktlen = bus_space_read_2(sc->sc_bst, sc->sc_bsh, sc->sc_offset + RBC0) & RBC_COUNT_MASK; if (pktlen == 0) { /* * XXX At least one CE2 sets RBC0 == 0 occasionally, and only * when MPE is set. It is not known why. */ return (0); } recvcount += pktlen; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) return (recvcount); m->m_pkthdr.len = pktlen; len = MHLEN; top = 0; mp = ⊤ while (pktlen > 0) { if (top) { MGET(m, M_DONTWAIT, MT_DATA); if (m == NULL) { m_freem(top); return (recvcount); } len = MLEN; } if (pktlen >= MINCLSIZE) { MCLGET(m, M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(m); m_freem(top); return (recvcount); } len = MCLBYTES; } if (!top) { caddr_t newdata = (caddr_t)ALIGN(m->m_data + sizeof (struct ether_header)) - sizeof (struct ether_header); len -= newdata - m->m_data; m->m_data = newdata; } len = min(pktlen, len); data = mtod(m, u_int8_t *); if (len > 1) { len &= ~1; bus_space_read_raw_multi_2(sc->sc_bst, sc->sc_bsh, sc->sc_offset + EDP, data, len); } else *data = bus_space_read_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + EDP); m->m_len = len; pktlen -= len; *mp = m; mp = &m->m_next; } /* Skip Rx packet. */ bus_space_write_2(sc->sc_bst, sc->sc_bsh, sc->sc_offset + DO0, DO_SKIP_RX_PKT); ml_enqueue(&ml, top); if_input(ifp, &ml); return (recvcount); } /* * Serial management for the MII. * The DELAY's below stem from the fact that the maximum frequency * acceptable on the MDC pin is 2.5 MHz and fast processors can easily * go much faster than that. */ /* Let the MII serial management be idle for one period. */ static INLINE void xe_mdi_idle(struct xe_softc *); static INLINE void xe_mdi_idle(sc) struct xe_softc *sc; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; /* Drive MDC low... */ bus_space_write_1(bst, bsh, offset + GP2, MDC_LOW); DELAY(1); /* and high again. */ bus_space_write_1(bst, bsh, offset + GP2, MDC_HIGH); DELAY(1); } /* Pulse out one bit of data. */ static INLINE void xe_mdi_pulse(struct xe_softc *, int); static INLINE void xe_mdi_pulse(sc, data) struct xe_softc *sc; int data; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; u_int8_t bit = data ? MDIO_HIGH : MDIO_LOW; /* First latch the data bit MDIO with clock bit MDC low...*/ bus_space_write_1(bst, bsh, offset + GP2, bit | MDC_LOW); DELAY(1); /* then raise the clock again, preserving the data bit. */ bus_space_write_1(bst, bsh, offset + GP2, bit | MDC_HIGH); DELAY(1); } /* Probe one bit of data. */ static INLINE int xe_mdi_probe(struct xe_softc *sc); static INLINE int xe_mdi_probe(sc) struct xe_softc *sc; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; u_int8_t x; /* Pull clock bit MDCK low... */ bus_space_write_1(bst, bsh, offset + GP2, MDC_LOW); DELAY(1); /* Read data and drive clock high again. */ x = bus_space_read_1(bst, bsh, offset + GP2) & MDIO; bus_space_write_1(bst, bsh, offset + GP2, MDC_HIGH); DELAY(1); return (x); } /* Pulse out a sequence of data bits. */ static INLINE void xe_mdi_pulse_bits(struct xe_softc *, u_int32_t, int); static INLINE void xe_mdi_pulse_bits(sc, data, len) struct xe_softc *sc; u_int32_t data; int len; { u_int32_t mask; for (mask = 1 << (len - 1); mask; mask >>= 1) xe_mdi_pulse(sc, data & mask); } /* Read a PHY register. */ int xe_mdi_read(self, phy, reg) struct device *self; int phy; int reg; { struct xe_softc *sc = (struct xe_softc *)self; int i; u_int32_t mask; u_int32_t data = 0; PAGE(sc, 2); for (i = 0; i < 32; i++) /* Synchronize. */ xe_mdi_pulse(sc, 1); xe_mdi_pulse_bits(sc, 0x06, 4); /* Start + Read opcode */ xe_mdi_pulse_bits(sc, phy, 5); /* PHY address */ xe_mdi_pulse_bits(sc, reg, 5); /* PHY register */ xe_mdi_idle(sc); /* Turn around. */ xe_mdi_probe(sc); /* Drop initial zero bit. */ for (mask = 1 << 15; mask; mask >>= 1) if (xe_mdi_probe(sc)) data |= mask; xe_mdi_idle(sc); DPRINTF(XED_MII, ("xe_mdi_read: phy %d reg %d -> %x\n", phy, reg, data)); return (data); } /* Write a PHY register. */ void xe_mdi_write(self, phy, reg, value) struct device *self; int phy; int reg; int value; { struct xe_softc *sc = (struct xe_softc *)self; int i; PAGE(sc, 2); for (i = 0; i < 32; i++) /* Synchronize. */ xe_mdi_pulse(sc, 1); xe_mdi_pulse_bits(sc, 0x05, 4); /* Start + Write opcode */ xe_mdi_pulse_bits(sc, phy, 5); /* PHY address */ xe_mdi_pulse_bits(sc, reg, 5); /* PHY register */ xe_mdi_pulse_bits(sc, 0x02, 2); /* Turn around. */ xe_mdi_pulse_bits(sc, value, 16); /* Write the data */ xe_mdi_idle(sc); /* Idle away. */ DPRINTF(XED_MII, ("xe_mdi_write: phy %d reg %d val %x\n", phy, reg, value)); } void xe_statchg(self) struct device *self; { } /* * Change media according to request. */ int xe_mediachange(ifp) struct ifnet *ifp; { if (ifp->if_flags & IFF_UP) xe_init(ifp->if_softc); return (0); } /* * Notify the world which media we're using. */ void xe_mediastatus(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { struct xe_softc *sc = ifp->if_softc; mii_pollstat(&sc->sc_mii); ifmr->ifm_status = sc->sc_mii.mii_media_status; ifmr->ifm_active = sc->sc_mii.mii_media_active; } void xe_reset(sc) struct xe_softc *sc; { int s; s = splnet(); xe_stop(sc); xe_full_reset(sc); xe_init(sc); splx(s); } void xe_watchdog(ifp) struct ifnet *ifp; { struct xe_softc *sc = ifp->if_softc; log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); ++sc->sc_arpcom.ac_if.if_oerrors; xe_reset(sc); } void xe_stop(sc) register struct xe_softc *sc; { /* Disable interrupts. */ PAGE(sc, 0); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + CR, 0); PAGE(sc, 1); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + IMR0, 0); /* Power down, wait. */ PAGE(sc, 4); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + GP1, 0); DELAY(40000); /* Cancel watchdog timer. */ sc->sc_arpcom.ac_if.if_timer = 0; } void xe_init(sc) struct xe_softc *sc; { struct ifnet *ifp = &sc->sc_arpcom.ac_if; int s; DPRINTF(XED_CONFIG, ("xe_init\n")); s = splnet(); xe_set_address(sc); /* Set current media. */ mii_mediachg(&sc->sc_mii); ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); splx(s); } /* * Start outputting on the interface. * Always called as splnet(). */ void xe_start(ifp) struct ifnet *ifp; { struct xe_softc *sc = ifp->if_softc; bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; unsigned int s, len, pad = 0; struct mbuf *m0, *m; u_int16_t space; /* Don't transmit if interface is busy or not running. */ if (!(ifp->if_flags & IFF_RUNNING) || ifq_is_oactive(&ifp->if_snd)) return; /* Peek at the next packet. */ m0 = ifq_deq_begin(&ifp->if_snd); if (m0 == NULL) return; /* We need to use m->m_pkthdr.len, so require the header. */ if (!(m0->m_flags & M_PKTHDR)) panic("xe_start: no header mbuf"); len = m0->m_pkthdr.len; /* Pad to ETHER_MIN_LEN - ETHER_CRC_LEN. */ if (len < ETHER_MIN_LEN - ETHER_CRC_LEN) pad = ETHER_MIN_LEN - ETHER_CRC_LEN - len; PAGE(sc, 0); space = bus_space_read_2(bst, bsh, offset + TSO0) & 0x7fff; if (len + pad + 2 > space) { ifq_deq_rollback(&ifp->if_snd, m0); DPRINTF(XED_FIFO, ("%s: not enough space in output FIFO (%d > %d)\n", sc->sc_dev.dv_xname, len + pad + 2, space)); return; } ifq_deq_commit(&ifp->if_snd, m0); #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT); #endif /* * Do the output at splhigh() so that an interrupt from another device * won't cause a FIFO underrun. */ s = splhigh(); bus_space_write_2(bst, bsh, offset + TSO2, (u_int16_t)len + pad + 2); bus_space_write_2(bst, bsh, offset + EDP, (u_int16_t)len + pad); for (m = m0; m; ) { if (m->m_len > 1) bus_space_write_raw_multi_2(bst, bsh, offset + EDP, mtod(m, u_int8_t *), m->m_len & ~1); if (m->m_len & 1) bus_space_write_1(bst, bsh, offset + EDP, *(mtod(m, u_int8_t *) + m->m_len - 1)); m0 = m_free(m); m = m0; } if (sc->sc_flags & XEF_MOHAWK) bus_space_write_1(bst, bsh, offset + CR, TX_PKT | ENABLE_INT); else { for (; pad > 1; pad -= 2) bus_space_write_2(bst, bsh, offset + EDP, 0); if (pad == 1) bus_space_write_1(bst, bsh, offset + EDP, 0); } splx(s); ifp->if_timer = 5; ++ifp->if_opackets; } int xe_ioctl(ifp, command, data) struct ifnet *ifp; u_long command; caddr_t data; { struct xe_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; int s, error = 0; s = splnet(); switch (command) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; xe_init(sc); break; case SIOCSIFFLAGS: sc->sc_all_mcasts = (ifp->if_flags & IFF_ALLMULTI) ? 1 : 0; PAGE(sc, 0x42); if ((ifp->if_flags & IFF_PROMISC) || (ifp->if_flags & IFF_ALLMULTI)) bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + SWC1, SWC1_PROMISC | SWC1_MCAST_PROM); else bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + SWC1, 0); /* * If interface is marked up and not running, then start it. * If it is marked down and running, stop it. * XXX If it's up then re-initialize it. This is so flags * such as IFF_PROMISC are handled. */ if (ifp->if_flags & IFF_UP) { xe_init(sc); } else { if (ifp->if_flags & IFF_RUNNING) xe_stop(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: sc->sc_all_mcasts = (ifp->if_flags & IFF_ALLMULTI) ? 1 : 0; error = (command == 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. */ if (!sc->sc_all_mcasts && !(ifp->if_flags & IFF_PROMISC)) xe_set_address(sc); /* * xe_set_address() can turn on all_mcasts if we run * out of space, so check it again rather than else {}. */ if (sc->sc_all_mcasts) xe_init(sc); error = 0; } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, command); break; default: error = ENOTTY; } splx(s); return (error); } void xe_set_address(sc) struct xe_softc *sc; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; struct arpcom *arp = &sc->sc_arpcom; struct ether_multi *enm; struct ether_multistep step; struct ifnet *ifp = &sc->sc_arpcom.ac_if; int i, page, pos, num; PAGE(sc, 0x50); for (i = 0; i < 6; i++) { bus_space_write_1(bst, bsh, offset + IA + i, sc->sc_arpcom.ac_enaddr[(sc->sc_flags & XEF_MOHAWK) ? 5 - i : i]); } if (arp->ac_multirangecnt > 0) { ifp->if_flags |= IFF_ALLMULTI; sc->sc_all_mcasts=1; } else if (arp->ac_multicnt > 0) { if (arp->ac_multicnt > 9) { PAGE(sc, 0x42); bus_space_write_1(sc->sc_bst, sc->sc_bsh, sc->sc_offset + SWC1, SWC1_PROMISC | SWC1_MCAST_PROM); return; } ETHER_FIRST_MULTI(step, arp, enm); pos = IA + 6; for (page = 0x50, num = arp->ac_multicnt; num > 0 && enm; num--) { for (i = 0; i < 6; i++) { bus_space_write_1(bst, bsh, offset + pos, enm->enm_addrlo[ (sc->sc_flags & XEF_MOHAWK) ? 5 - i : i]); if (++pos > 15) { pos = IA; page++; PAGE(sc, page); } } } } } void xe_cycle_power(sc) struct xe_softc *sc; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; PAGE(sc, 4); DELAY(1); bus_space_write_1(bst, bsh, offset + GP1, 0); DELAY(40000); if (sc->sc_flags & XEF_MOHAWK) bus_space_write_1(bst, bsh, offset + GP1, POWER_UP); else /* XXX What is bit 2 (aka AIC)? */ bus_space_write_1(bst, bsh, offset + GP1, POWER_UP | 4); DELAY(20000); } void xe_full_reset(sc) struct xe_softc *sc; { bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; /* Do an as extensive reset as possible on all functions. */ xe_cycle_power(sc); bus_space_write_1(bst, bsh, offset + CR, SOFT_RESET); DELAY(20000); bus_space_write_1(bst, bsh, offset + CR, 0); DELAY(20000); if (sc->sc_flags & XEF_MOHAWK) { PAGE(sc, 4); /* * Drive GP1 low to power up ML6692 and GP2 high to power up * the 10MHz chip. XXX What chip is that? The phy? */ bus_space_write_1(bst, bsh, offset + GP0, GP1_OUT | GP2_OUT | GP2_WR); } DELAY(500000); /* Get revision information. XXX Symbolic constants. */ sc->sc_rev = bus_space_read_1(bst, bsh, offset + BV) & ((sc->sc_flags & XEF_MOHAWK) ? 0x70 : 0x30) >> 4; /* Media selection. XXX Maybe manual overriding too? */ if (!(sc->sc_flags & XEF_MOHAWK)) { PAGE(sc, 4); /* * XXX I have no idea what this really does, it is from the * Linux driver. */ bus_space_write_1(bst, bsh, offset + GP0, GP1_OUT); } DELAY(40000); /* Setup the ethernet interrupt mask. */ PAGE(sc, 1); bus_space_write_1(bst, bsh, offset + IMR0, ISR_TX_OFLOW | ISR_PKT_TX | ISR_MAC_INT | /* ISR_RX_EARLY | */ ISR_RX_FULL | ISR_RX_PKT_REJ | ISR_FORCED_INT); #if 0 bus_space_write_1(bst, bsh, offset + IMR0, 0xff); #endif if (!(sc->sc_flags & XEF_DINGO)) /* XXX What is this? Not for Dingo at least. */ bus_space_write_1(bst, bsh, offset + IMR1, 1); /* * Disable source insertion. * XXX Dingo does not have this bit, but Linux does it unconditionally. */ if (!(sc->sc_flags & XEF_DINGO)) { PAGE(sc, 0x42); bus_space_write_1(bst, bsh, offset + SWC0, 0x20); } /* Set the local memory dividing line. */ if (sc->sc_rev != 1) { PAGE(sc, 2); /* XXX Symbolic constant preferrable. */ bus_space_write_2(bst, bsh, offset + RBS0, 0x2000); } xe_set_address(sc); /* * Apparently the receive byte pointer can be bad after a reset, so * we hardwire it correctly. */ PAGE(sc, 0); bus_space_write_2(bst, bsh, offset + DO0, DO_CHG_OFFSET); /* Setup ethernet MAC registers. XXX Symbolic constants. */ PAGE(sc, 0x40); bus_space_write_1(bst, bsh, offset + RX0MSK, PKT_TOO_LONG | CRC_ERR | RX_OVERRUN | RX_ABORT | RX_OK); bus_space_write_1(bst, bsh, offset + TX0MSK, CARRIER_LOST | EXCESSIVE_COLL | TX_UNDERRUN | LATE_COLLISION | SQE | TX_ABORT | TX_OK); if (!(sc->sc_flags & XEF_DINGO)) /* XXX From Linux, dunno what 0xb0 means. */ bus_space_write_1(bst, bsh, offset + TX1MSK, 0xb0); bus_space_write_1(bst, bsh, offset + RXST0, 0); bus_space_write_1(bst, bsh, offset + TXST0, 0); bus_space_write_1(bst, bsh, offset + TXST1, 0); /* Enable MII function if available. */ if (LIST_FIRST(&sc->sc_mii.mii_phys)) { PAGE(sc, 2); bus_space_write_1(bst, bsh, offset + MSR, bus_space_read_1(bst, bsh, offset + MSR) | SELECT_MII); DELAY(20000); } else { PAGE(sc, 0); /* XXX Do we need to do this? */ PAGE(sc, 0x42); bus_space_write_1(bst, bsh, offset + SWC1, SWC1_AUTO_MEDIA); DELAY(50000); /* XXX Linux probes the media here. */ } /* Configure the LED registers. */ PAGE(sc, 2); /* XXX This is not good for 10base2. */ bus_space_write_1(bst, bsh, offset + LED, LED_TX_ACT << LED1_SHIFT | LED_10MB_LINK << LED0_SHIFT); if (sc->sc_flags & XEF_DINGO) bus_space_write_1(bst, bsh, offset + LED3, LED_100MB_LINK << LED3_SHIFT); /* Enable receiver and go online. */ PAGE(sc, 0x40); bus_space_write_1(bst, bsh, offset + CMD0, ENABLE_RX | ONLINE); #if 0 /* XXX Linux does this here - is it necessary? */ PAGE(sc, 1); bus_space_write_1(bst, bsh, offset + IMR0, 0xff); if (!(sc->sc_flags & XEF_DINGO)) /* XXX What is this? Not for Dingo at least. */ bus_space_write_1(bst, bsh, offset + IMR1, 1); #endif /* Enable interrupts. */ PAGE(sc, 0); bus_space_write_1(bst, bsh, offset + CR, ENABLE_INT); /* XXX This is pure magic for me, found in the Linux driver. */ if ((sc->sc_flags & (XEF_DINGO | XEF_MODEM)) == XEF_MODEM) { if ((bus_space_read_1(bst, bsh, offset + 0x10) & 0x01) == 0) /* Unmask the master interrupt bit. */ bus_space_write_1(bst, bsh, offset + 0x10, 0x11); } /* * The Linux driver says this: * We should switch back to page 0 to avoid a bug in revision 0 * where regs with offset below 8 can't be read after an access * to the MAC registers. */ PAGE(sc, 0); } #ifdef XEDEBUG void xe_reg_dump(sc) struct xe_softc *sc; { int page, i; bus_space_tag_t bst = sc->sc_bst; bus_space_handle_t bsh = sc->sc_bsh; bus_size_t offset = sc->sc_offset; printf("%x: Common registers: ", sc->sc_dev.dv_xname); for (i = 0; i < 8; i++) { printf(" %2.2x", bus_space_read_1(bst, bsh, offset + i)); } printf("\n"); for (page = 0; page < 8; page++) { printf("%s: Register page %2.2x: ", sc->sc_dev.dv_xname, page); PAGE(sc, page); for (i = 8; i < 16; i++) { printf(" %2.2x", bus_space_read_1(bst, bsh, offset + i)); } printf("\n"); } for (page = 0x40; page < 0x5f; page++) { if (page == 0x43 || (page >= 0x46 && page <= 0x4f) || (page >= 0x51 && page <= 0x5e)) continue; printf("%s: Register page %2.2x: ", sc->sc_dev.dv_xname, page); PAGE(sc, page); for (i = 8; i < 16; i++) { printf(" %2.2x", bus_space_read_1(bst, bsh, offset + i)); } printf("\n"); } } #endif /* XEDEBUG */