/* $NetBSD: if_gfe.c,v 1.13 2003/08/05 14:55:06 scw Exp $ */ /* * Copyright (c) 2002 Allegro Networks, Inc., Wasabi Systems, Inc. * 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 for the NetBSD Project by * Allegro Networks, Inc., and Wasabi Systems, Inc. * 4. The name of Allegro Networks, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * 5. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY ALLEGRO NETWORKS, INC. AND * WASABI SYSTEMS, INC. ``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 EITHER ALLEGRO NETWORKS, INC. OR WASABI SYSTEMS, INC. * 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. */ /* * if_gfe.c -- GT ethernet MAC driver */ #include __KERNEL_RCSID(0, "$NetBSD: if_gfe.c,v 1.13 2003/08/05 14:55:06 scw Exp $"); #include "opt_inet.h" #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #if NBPFILTER > 0 #include #endif #include #include #include #include #include #define GE_READ(sc, reg) \ bus_space_read_4((sc)->sc_gt_memt, (sc)->sc_memh, ETH__ ## reg) #define GE_WRITE(sc, reg, v) \ bus_space_write_4((sc)->sc_gt_memt, (sc)->sc_memh, ETH__ ## reg, (v)) #define GE_DEBUG #if 0 #define GE_NOHASH #define GE_NORX #endif #ifdef GE_DEBUG #define GE_DPRINTF(sc, a) do \ if ((sc)->sc_ec.ec_if.if_flags & IFF_DEBUG) \ printf a; \ while (0) #define GE_FUNC_ENTER(sc, func) GE_DPRINTF(sc, ("[" func)) #define GE_FUNC_EXIT(sc, str) GE_DPRINTF(sc, (str "]")) #else #define GE_DPRINTF(sc, a) do { } while (0) #define GE_FUNC_ENTER(sc, func) do { } while (0) #define GE_FUNC_EXIT(sc, str) do { } while (0) #endif enum gfe_whack_op { GE_WHACK_START, GE_WHACK_RESTART, GE_WHACK_CHANGE, GE_WHACK_STOP }; enum gfe_hash_op { GE_HASH_ADD, GE_HASH_REMOVE, }; #if 1 #define htogt32(a) htobe32(a) #define gt32toh(a) be32toh(a) #else #define htogt32(a) htole32(a) #define gt32toh(a) le32toh(a) #endif #define GE_RXDSYNC(sc, rxq, n, ops) \ bus_dmamap_sync((sc)->sc_dmat, (rxq)->rxq_desc_mem.gdm_map, \ (n) * sizeof((rxq)->rxq_descs[0]), sizeof((rxq)->rxq_descs[0]), \ (ops)) #define GE_RXDPRESYNC(sc, rxq, n) \ GE_RXDSYNC(sc, rxq, n, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE) #define GE_RXDPOSTSYNC(sc, rxq, n) \ GE_RXDSYNC(sc, rxq, n, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE) #define GE_TXDSYNC(sc, txq, n, ops) \ bus_dmamap_sync((sc)->sc_dmat, (txq)->txq_desc_mem.gdm_map, \ (n) * sizeof((txq)->txq_descs[0]), sizeof((txq)->txq_descs[0]), \ (ops)) #define GE_TXDPRESYNC(sc, txq, n) \ GE_TXDSYNC(sc, txq, n, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE) #define GE_TXDPOSTSYNC(sc, txq, n) \ GE_TXDSYNC(sc, txq, n, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE) #define STATIC STATIC int gfe_match (struct device *, struct cfdata *, void *); STATIC void gfe_attach (struct device *, struct device *, void *); STATIC int gfe_dmamem_alloc(struct gfe_softc *, struct gfe_dmamem *, int, size_t, int); STATIC void gfe_dmamem_free(struct gfe_softc *, struct gfe_dmamem *); STATIC int gfe_ifioctl (struct ifnet *, u_long, caddr_t); STATIC void gfe_ifstart (struct ifnet *); STATIC void gfe_ifwatchdog (struct ifnet *); STATIC int gfe_mii_mediachange (struct ifnet *); STATIC void gfe_mii_mediastatus (struct ifnet *, struct ifmediareq *); STATIC int gfe_mii_read (struct device *, int, int); STATIC void gfe_mii_write (struct device *, int, int, int); STATIC void gfe_mii_statchg (struct device *); STATIC void gfe_tick(void *arg); STATIC void gfe_tx_restart(void *); STATIC int gfe_tx_enqueue(struct gfe_softc *, enum gfe_txprio); STATIC uint32_t gfe_tx_done(struct gfe_softc *, enum gfe_txprio, uint32_t); STATIC void gfe_tx_cleanup(struct gfe_softc *, enum gfe_txprio, int); STATIC int gfe_tx_start(struct gfe_softc *, enum gfe_txprio); STATIC void gfe_tx_stop(struct gfe_softc *, enum gfe_whack_op); STATIC void gfe_rx_cleanup(struct gfe_softc *, enum gfe_rxprio); STATIC void gfe_rx_get(struct gfe_softc *, enum gfe_rxprio); STATIC int gfe_rx_prime(struct gfe_softc *); STATIC uint32_t gfe_rx_process(struct gfe_softc *, uint32_t, uint32_t); STATIC int gfe_rx_rxqalloc(struct gfe_softc *, enum gfe_rxprio); STATIC void gfe_rx_stop(struct gfe_softc *, enum gfe_whack_op); STATIC int gfe_intr(void *); STATIC int gfe_whack(struct gfe_softc *, enum gfe_whack_op); STATIC int gfe_hash_compute(struct gfe_softc *, const uint8_t [ETHER_ADDR_LEN]); STATIC int gfe_hash_entry_op(struct gfe_softc *, enum gfe_hash_op, enum gfe_rxprio, const uint8_t [ETHER_ADDR_LEN]); STATIC int gfe_hash_multichg(struct ethercom *, const struct ether_multi *, u_long); STATIC int gfe_hash_fill(struct gfe_softc *); STATIC int gfe_hash_alloc(struct gfe_softc *); /* Linkup to the rest of the kernel */ CFATTACH_DECL(gfe, sizeof(struct gfe_softc), gfe_match, gfe_attach, NULL, NULL); extern struct cfdriver gfe_cd; int gfe_match(struct device *parent, struct cfdata *cf, void *aux) { struct gt_softc *gt = (struct gt_softc *) parent; struct gt_attach_args *ga = aux; uint8_t enaddr[6]; if (!GT_ETHEROK(gt, ga, &gfe_cd)) return 0; if (gtget_macaddr(gt, ga->ga_unit, enaddr) < 0) return 0; if (enaddr[0] == 0 && enaddr[1] == 0 && enaddr[2] == 0 && enaddr[3] == 0 && enaddr[4] == 0 && enaddr[5] == 0) return 0; return 1; } /* * Attach this instance, and then all the sub-devices */ void gfe_attach(struct device *parent, struct device *self, void *aux) { struct gt_attach_args * const ga = aux; struct gt_softc * const gt = (struct gt_softc *) parent; struct gfe_softc * const sc = (struct gfe_softc *) self; struct ifnet * const ifp = &sc->sc_ec.ec_if; uint32_t data; uint8_t enaddr[6]; int phyaddr; uint32_t sdcr; GT_ETHERFOUND(gt, ga); sc->sc_gt_memt = ga->ga_memt; sc->sc_gt_memh = ga->ga_memh; sc->sc_dmat = ga->ga_dmat; sc->sc_macno = ga->ga_unit; if (bus_space_subregion(sc->sc_gt_memt, sc->sc_gt_memh, ETH_BASE(sc->sc_macno), ETH_SIZE, &sc->sc_memh)) { aprint_error(": failed to map registers\n"); } callout_init(&sc->sc_co); data = bus_space_read_4(sc->sc_gt_memt, sc->sc_gt_memh, ETH_EPAR); phyaddr = ETH_EPAR_PhyAD_GET(data, sc->sc_macno); gtget_macaddr(gt, sc->sc_macno, enaddr); sc->sc_pcr = GE_READ(sc, EPCR); sc->sc_pcxr = GE_READ(sc, EPCXR); sc->sc_intrmask = GE_READ(sc, EIMR) | ETH_IR_MIIPhySTC; aprint_normal(": address %s", ether_sprintf(enaddr)); #if defined(DEBUG) aprint_normal(", pcr %#x, pcxr %#x", sc->sc_pcr, sc->sc_pcxr); #endif sc->sc_pcxr &= ~ETH_EPCXR_PRIOrx_Override; if (sc->sc_dev.dv_cfdata->cf_flags & 1) { aprint_normal(", phy %d (rmii)", phyaddr); sc->sc_pcxr |= ETH_EPCXR_RMIIEn; } else { aprint_normal(", phy %d (mii)", phyaddr); sc->sc_pcxr &= ~ETH_EPCXR_RMIIEn; } sc->sc_pcxr &= ~(3 << 14); sc->sc_pcxr |= (ETH_EPCXR_MFL_1536 << 14); if (sc->sc_pcr & ETH_EPCR_EN) { int tries = 1000; /* * Abort transmitter and receiver and wait for them to quiese */ GE_WRITE(sc, ESDCMR, ETH_ESDCMR_AR|ETH_ESDCMR_AT); do { delay(100); } while (tries-- > 0 && (GE_READ(sc, ESDCMR) & (ETH_ESDCMR_AR|ETH_ESDCMR_AT))); } sc->sc_pcr &= ~(ETH_EPCR_EN | ETH_EPCR_RBM | ETH_EPCR_PM | ETH_EPCR_PBF); #if defined(DEBUG) aprint_normal(", pcr %#x, pcxr %#x", sc->sc_pcr, sc->sc_pcxr); #endif /* * Now turn off the GT. If it didn't quiese, too ***ing bad. */ GE_WRITE(sc, EPCR, sc->sc_pcr); GE_WRITE(sc, EIMR, sc->sc_intrmask); sdcr = GE_READ(sc, ESDCR); ETH_ESDCR_BSZ_SET(sdcr, ETH_ESDCR_BSZ_4); sdcr |= ETH_ESDCR_RIFB; GE_WRITE(sc, ESDCR, sdcr); sc->sc_max_frame_length = 1536; aprint_normal("\n"); sc->sc_mii.mii_ifp = ifp; sc->sc_mii.mii_readreg = gfe_mii_read; sc->sc_mii.mii_writereg = gfe_mii_write; sc->sc_mii.mii_statchg = gfe_mii_statchg; ifmedia_init(&sc->sc_mii.mii_media, 0, gfe_mii_mediachange, gfe_mii_mediastatus); mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, phyaddr, MII_OFFSET_ANY, MIIF_NOISOLATE); if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE); } else { ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO); } strcpy(ifp->if_xname, sc->sc_dev.dv_xname); ifp->if_softc = sc; /* ifp->if_mowner = &sc->sc_mowner; */ ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; #if 0 ifp->if_flags |= IFF_DEBUG; #endif ifp->if_ioctl = gfe_ifioctl; ifp->if_start = gfe_ifstart; ifp->if_watchdog = gfe_ifwatchdog; if_attach(ifp); ether_ifattach(ifp, enaddr); #if NBPFILTER > 0 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif #if NRND > 0 rnd_attach_source(&sc->sc_rnd_source, self->dv_xname, RND_TYPE_NET, 0); #endif intr_establish(IRQ_ETH0 + sc->sc_macno, IST_LEVEL, IPL_NET, gfe_intr, sc); } int gfe_dmamem_alloc(struct gfe_softc *sc, struct gfe_dmamem *gdm, int maxsegs, size_t size, int flags) { int error = 0; GE_FUNC_ENTER(sc, "gfe_dmamem_alloc"); gdm->gdm_size = size; gdm->gdm_maxsegs = maxsegs; error = bus_dmamem_alloc(sc->sc_dmat, gdm->gdm_size, PAGE_SIZE, gdm->gdm_size, gdm->gdm_segs, gdm->gdm_maxsegs, &gdm->gdm_nsegs, BUS_DMA_NOWAIT); if (error) goto fail; error = bus_dmamem_map(sc->sc_dmat, gdm->gdm_segs, gdm->gdm_nsegs, gdm->gdm_size, &gdm->gdm_kva, flags | BUS_DMA_NOWAIT); if (error) goto fail; error = bus_dmamap_create(sc->sc_dmat, gdm->gdm_size, gdm->gdm_nsegs, gdm->gdm_size, 0, BUS_DMA_ALLOCNOW|BUS_DMA_NOWAIT, &gdm->gdm_map); if (error) goto fail; error = bus_dmamap_load(sc->sc_dmat, gdm->gdm_map, gdm->gdm_kva, gdm->gdm_size, NULL, BUS_DMA_NOWAIT); if (error) goto fail; /* invalidate from cache */ bus_dmamap_sync(sc->sc_dmat, gdm->gdm_map, 0, gdm->gdm_size, BUS_DMASYNC_PREREAD); fail: if (error) { gfe_dmamem_free(sc, gdm); GE_DPRINTF(sc, (":err=%d", error)); } GE_DPRINTF(sc, (":kva=%p/%#x,map=%p,nsegs=%d,pa=%x/%x", gdm->gdm_kva, gdm->gdm_size, gdm->gdm_map, gdm->gdm_map->dm_nsegs, gdm->gdm_map->dm_segs->ds_addr, gdm->gdm_map->dm_segs->ds_len)); GE_FUNC_EXIT(sc, ""); return error; } void gfe_dmamem_free(struct gfe_softc *sc, struct gfe_dmamem *gdm) { GE_FUNC_ENTER(sc, "gfe_dmamem_free"); if (gdm->gdm_map) bus_dmamap_destroy(sc->sc_dmat, gdm->gdm_map); if (gdm->gdm_kva) bus_dmamem_unmap(sc->sc_dmat, gdm->gdm_kva, gdm->gdm_size); if (gdm->gdm_nsegs > 0) bus_dmamem_free(sc->sc_dmat, gdm->gdm_segs, gdm->gdm_nsegs); gdm->gdm_map = NULL; gdm->gdm_kva = NULL; gdm->gdm_nsegs = 0; GE_FUNC_EXIT(sc, ""); } int gfe_ifioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct gfe_softc * const sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; struct ifaddr *ifa = (struct ifaddr *) data; int s, error = 0; GE_FUNC_ENTER(sc, "gfe_ifioctl"); s = splnet(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; switch (ifa->ifa_addr->sa_family) { #ifdef INET case AF_INET: error = gfe_whack(sc, GE_WHACK_START); if (error == 0) arp_ifinit(ifp, ifa); break; #endif default: error = gfe_whack(sc, GE_WHACK_START); break; } break; case SIOCSIFFLAGS: switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { case IFF_UP|IFF_RUNNING:/* active->active, update */ error = gfe_whack(sc, GE_WHACK_CHANGE); break; case IFF_RUNNING: /* not up, so we stop */ error = gfe_whack(sc, GE_WHACK_STOP); break; case IFF_UP: /* not running, so we start */ error = gfe_whack(sc, GE_WHACK_START); break; case 0: /* idle->idle: do nothing */ break; } break; case SIOCADDMULTI: case SIOCDELMULTI: error = (cmd == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->sc_ec) : ether_delmulti(ifr, &sc->sc_ec); if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) error = gfe_whack(sc, GE_WHACK_CHANGE); else error = 0; } break; case SIOCSIFMTU: if (ifr->ifr_mtu > ETHERMTU || ifr->ifr_mtu < ETHERMIN) { error = EINVAL; break; } ifp->if_mtu = ifr->ifr_mtu; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); break; default: error = EINVAL; break; } splx(s); GE_FUNC_EXIT(sc, ""); return error; } void gfe_ifstart(struct ifnet *ifp) { struct gfe_softc * const sc = ifp->if_softc; struct mbuf *m; GE_FUNC_ENTER(sc, "gfe_ifstart"); if ((ifp->if_flags & IFF_RUNNING) == 0) { GE_FUNC_EXIT(sc, "$"); return; } if (sc->sc_txq[GE_TXPRIO_HI] == NULL) { ifp->if_flags |= IFF_OACTIVE; #if defined(DEBUG) || defined(DIAGNOSTIC) printf("%s: ifstart: txq not yet created\n", ifp->if_xname); #endif GE_FUNC_EXIT(sc, ""); return; } for (;;) { IF_DEQUEUE(&ifp->if_snd, m); if (m == NULL) { ifp->if_flags &= ~IFF_OACTIVE; GE_FUNC_EXIT(sc, ""); return; } /* * No space in the pending queue? try later. */ if (IF_QFULL(&sc->sc_txq[GE_TXPRIO_HI]->txq_pendq)) break; /* * Try to enqueue a mbuf to the device. If that fails, we * can always try to map the next mbuf. */ IF_ENQUEUE(&sc->sc_txq[GE_TXPRIO_HI]->txq_pendq, m); GE_DPRINTF(sc, (">")); #ifndef GE_NOTX (void) gfe_tx_enqueue(sc, GE_TXPRIO_HI); #endif } /* * Attempt to queue the mbuf for send failed. */ IF_PREPEND(&ifp->if_snd, m); ifp->if_flags |= IFF_OACTIVE; GE_FUNC_EXIT(sc, "%%"); } void gfe_ifwatchdog(struct ifnet *ifp) { struct gfe_softc * const sc = ifp->if_softc; struct gfe_txqueue *txq; GE_FUNC_ENTER(sc, "gfe_ifwatchdog"); printf("%s: device timeout", sc->sc_dev.dv_xname); if ((txq = sc->sc_txq[GE_TXPRIO_HI]) != NULL) { uint32_t curtxdnum = (bus_space_read_4(sc->sc_gt_memt, sc->sc_gt_memh, txq->txq_ectdp) - txq->txq_desc_busaddr) / sizeof(txq->txq_descs[0]); GE_TXDPOSTSYNC(sc, txq, txq->txq_fi); GE_TXDPOSTSYNC(sc, txq, curtxdnum); printf(" (fi=%d(%#x),lo=%d,cur=%d(%#x),icm=%#x) ", txq->txq_fi, txq->txq_descs[txq->txq_fi].ed_cmdsts, txq->txq_lo, curtxdnum, txq->txq_descs[curtxdnum].ed_cmdsts, GE_READ(sc, EICR)); GE_TXDPRESYNC(sc, txq, txq->txq_fi); GE_TXDPRESYNC(sc, txq, curtxdnum); } printf("\n"); ifp->if_oerrors++; (void) gfe_whack(sc, GE_WHACK_RESTART); GE_FUNC_EXIT(sc, ""); } int gfe_rx_rxqalloc(struct gfe_softc *sc, enum gfe_rxprio rxprio) { struct gfe_rxqueue *rxq; volatile struct gt_eth_desc *rxd; const bus_dma_segment_t *ds; int error; int idx; bus_addr_t nxtaddr; bus_size_t boff; GE_FUNC_ENTER(sc, "gfe_rx_rxqalloc"); GE_DPRINTF(sc, ("(%d)", rxprio)); if (sc->sc_rxq[rxprio] != NULL) { GE_FUNC_EXIT(sc, ""); return 0; } rxq = (struct gfe_rxqueue *) malloc(sizeof(*rxq), M_DEVBUF, M_NOWAIT); if (rxq == NULL) { GE_FUNC_EXIT(sc, "!"); return ENOMEM; } memset(rxq, 0, sizeof(*rxq)); error = gfe_dmamem_alloc(sc, &rxq->rxq_desc_mem, 1, GE_RXDESC_MEMSIZE, BUS_DMA_NOCACHE); if (error) { free(rxq, M_DEVBUF); GE_FUNC_EXIT(sc, "!!"); return error; } error = gfe_dmamem_alloc(sc, &rxq->rxq_buf_mem, GE_RXBUF_NSEGS, GE_RXBUF_MEMSIZE, 0); if (error) { gfe_dmamem_free(sc, &rxq->rxq_desc_mem); free(rxq, M_DEVBUF); GE_FUNC_EXIT(sc, "!!!"); return error; } memset(rxq->rxq_desc_mem.gdm_kva, 0, GE_TXMEM_SIZE); sc->sc_rxq[rxprio] = rxq; rxq->rxq_descs = (volatile struct gt_eth_desc *) rxq->rxq_desc_mem.gdm_kva; rxq->rxq_desc_busaddr = rxq->rxq_desc_mem.gdm_map->dm_segs[0].ds_addr; rxq->rxq_bufs = (struct gfe_rxbuf *) rxq->rxq_buf_mem.gdm_kva; rxq->rxq_fi = 0; rxq->rxq_active = GE_RXDESC_MAX; for (idx = 0, rxd = rxq->rxq_descs, boff = 0, ds = rxq->rxq_buf_mem.gdm_map->dm_segs, nxtaddr = rxq->rxq_desc_busaddr + sizeof(*rxd); idx < GE_RXDESC_MAX; idx++, rxd++, nxtaddr += sizeof(*rxd)) { rxd->ed_lencnt = htogt32(GE_RXBUF_SIZE << 16); rxd->ed_cmdsts = htogt32(RX_CMD_F|RX_CMD_L|RX_CMD_O|RX_CMD_EI); rxd->ed_bufptr = htogt32(ds->ds_addr + boff); /* * update the nxtptr to point to the next txd. */ if (idx == GE_RXDESC_MAX - 1) nxtaddr = rxq->rxq_desc_busaddr; rxd->ed_nxtptr = htogt32(nxtaddr); boff += GE_RXBUF_SIZE; if (boff == ds->ds_len) { ds++; boff = 0; } } bus_dmamap_sync(sc->sc_dmat, rxq->rxq_desc_mem.gdm_map, 0, rxq->rxq_desc_mem.gdm_map->dm_mapsize, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, rxq->rxq_buf_mem.gdm_map, 0, rxq->rxq_buf_mem.gdm_map->dm_mapsize, BUS_DMASYNC_PREREAD); rxq->rxq_intrbits = ETH_IR_RxBuffer|ETH_IR_RxError; switch (rxprio) { case GE_RXPRIO_HI: rxq->rxq_intrbits |= ETH_IR_RxBuffer_3|ETH_IR_RxError_3; rxq->rxq_efrdp = ETH_EFRDP3(sc->sc_macno); rxq->rxq_ecrdp = ETH_ECRDP3(sc->sc_macno); break; case GE_RXPRIO_MEDHI: rxq->rxq_intrbits |= ETH_IR_RxBuffer_2|ETH_IR_RxError_2; rxq->rxq_efrdp = ETH_EFRDP2(sc->sc_macno); rxq->rxq_ecrdp = ETH_ECRDP2(sc->sc_macno); break; case GE_RXPRIO_MEDLO: rxq->rxq_intrbits |= ETH_IR_RxBuffer_1|ETH_IR_RxError_1; rxq->rxq_efrdp = ETH_EFRDP1(sc->sc_macno); rxq->rxq_ecrdp = ETH_ECRDP1(sc->sc_macno); break; case GE_RXPRIO_LO: rxq->rxq_intrbits |= ETH_IR_RxBuffer_0|ETH_IR_RxError_0; rxq->rxq_efrdp = ETH_EFRDP0(sc->sc_macno); rxq->rxq_ecrdp = ETH_ECRDP0(sc->sc_macno); break; } GE_FUNC_EXIT(sc, ""); return error; } void gfe_rx_get(struct gfe_softc *sc, enum gfe_rxprio rxprio) { struct ifnet * const ifp = &sc->sc_ec.ec_if; struct gfe_rxqueue * const rxq = sc->sc_rxq[rxprio]; struct mbuf *m = rxq->rxq_curpkt; GE_FUNC_ENTER(sc, "gfe_rx_get"); GE_DPRINTF(sc, ("(%d)", rxprio)); while (rxq->rxq_active > 0) { volatile struct gt_eth_desc *rxd = &rxq->rxq_descs[rxq->rxq_fi]; struct gfe_rxbuf *rxb = &rxq->rxq_bufs[rxq->rxq_fi]; const struct ether_header *eh; unsigned int cmdsts; size_t buflen; GE_RXDPOSTSYNC(sc, rxq, rxq->rxq_fi); cmdsts = gt32toh(rxd->ed_cmdsts); GE_DPRINTF(sc, (":%d=%#x", rxq->rxq_fi, cmdsts)); rxq->rxq_cmdsts = cmdsts; /* * Sometimes the GE "forgets" to reset the ownership bit. * But if the length has been rewritten, the packet is ours * so pretend the O bit is set. */ buflen = gt32toh(rxd->ed_lencnt) & 0xffff; if ((cmdsts & RX_CMD_O) && buflen == 0) { GE_RXDPRESYNC(sc, rxq, rxq->rxq_fi); break; } /* * If this is not a single buffer packet with no errors * or for some reason it's bigger than our frame size, * ignore it and go to the next packet. */ if ((cmdsts & (RX_CMD_F|RX_CMD_L|RX_STS_ES)) != (RX_CMD_F|RX_CMD_L) || buflen > sc->sc_max_frame_length) { GE_DPRINTF(sc, ("!")); --rxq->rxq_active; ifp->if_ipackets++; ifp->if_ierrors++; goto give_it_back; } if (m == NULL) { MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) { GE_DPRINTF(sc, ("?")); break; } } if ((m->m_flags & M_EXT) == 0 && buflen > MHLEN - 2) { MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { GE_DPRINTF(sc, ("?")); break; } } m->m_data += 2; m->m_len = 0; m->m_pkthdr.len = 0; m->m_pkthdr.rcvif = ifp; rxq->rxq_cmdsts = cmdsts; --rxq->rxq_active; bus_dmamap_sync(sc->sc_dmat, rxq->rxq_buf_mem.gdm_map, rxq->rxq_fi * sizeof(*rxb), buflen, BUS_DMASYNC_POSTREAD); KASSERT(m->m_len == 0 && m->m_pkthdr.len == 0); memcpy(m->m_data + m->m_len, rxb->rb_data, buflen); m->m_len = buflen; m->m_pkthdr.len = buflen; m->m_flags |= M_HASFCS; ifp->if_ipackets++; #if NBPFILTER > 0 if (ifp->if_bpf != NULL) bpf_mtap(ifp->if_bpf, m); #endif eh = (const struct ether_header *) m->m_data; if ((ifp->if_flags & IFF_PROMISC) || (rxq->rxq_cmdsts & RX_STS_M) == 0 || (rxq->rxq_cmdsts & RX_STS_HE) || (eh->ether_dhost[0] & 1) != 0 || memcmp(eh->ether_dhost, LLADDR(ifp->if_sadl), ETHER_ADDR_LEN) == 0) { (*ifp->if_input)(ifp, m); m = NULL; GE_DPRINTF(sc, (">")); } else { m->m_len = 0; m->m_pkthdr.len = 0; GE_DPRINTF(sc, ("+")); } rxq->rxq_cmdsts = 0; give_it_back: rxd->ed_lencnt &= ~0xffff; /* zero out length */ rxd->ed_cmdsts = htogt32(RX_CMD_F|RX_CMD_L|RX_CMD_O|RX_CMD_EI); #if 0 GE_DPRINTF(sc, ("([%d]->%08lx.%08lx.%08lx.%08lx)", rxq->rxq_fi, ((unsigned long *)rxd)[0], ((unsigned long *)rxd)[1], ((unsigned long *)rxd)[2], ((unsigned long *)rxd)[3])); #endif GE_RXDPRESYNC(sc, rxq, rxq->rxq_fi); if (++rxq->rxq_fi == GE_RXDESC_MAX) rxq->rxq_fi = 0; rxq->rxq_active++; } rxq->rxq_curpkt = m; GE_FUNC_EXIT(sc, ""); } uint32_t gfe_rx_process(struct gfe_softc *sc, uint32_t cause, uint32_t intrmask) { struct ifnet * const ifp = &sc->sc_ec.ec_if; struct gfe_rxqueue *rxq; uint32_t rxbits; #define RXPRIO_DECODER 0xffffaa50 GE_FUNC_ENTER(sc, "gfe_rx_process"); rxbits = ETH_IR_RxBuffer_GET(cause); while (rxbits) { enum gfe_rxprio rxprio = (RXPRIO_DECODER >> (rxbits * 2)) & 3; GE_DPRINTF(sc, ("%1x", rxbits)); rxbits &= ~(1 << rxprio); gfe_rx_get(sc, rxprio); } rxbits = ETH_IR_RxError_GET(cause); while (rxbits) { enum gfe_rxprio rxprio = (RXPRIO_DECODER >> (rxbits * 2)) & 3; uint32_t masks[(GE_RXDESC_MAX + 31) / 32]; int idx; rxbits &= ~(1 << rxprio); rxq = sc->sc_rxq[rxprio]; sc->sc_idlemask |= (rxq->rxq_intrbits & ETH_IR_RxBits); intrmask &= ~(rxq->rxq_intrbits & ETH_IR_RxBits); if ((sc->sc_tickflags & GE_TICK_RX_RESTART) == 0) { sc->sc_tickflags |= GE_TICK_RX_RESTART; callout_reset(&sc->sc_co, 1, gfe_tick, sc); } ifp->if_ierrors++; GE_DPRINTF(sc, ("%s: rx queue %d filled at %u\n", sc->sc_dev.dv_xname, rxprio, rxq->rxq_fi)); memset(masks, 0, sizeof(masks)); bus_dmamap_sync(sc->sc_dmat, rxq->rxq_desc_mem.gdm_map, 0, rxq->rxq_desc_mem.gdm_size, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); for (idx = 0; idx < GE_RXDESC_MAX; idx++) { volatile struct gt_eth_desc *rxd = &rxq->rxq_descs[idx]; if (RX_CMD_O & gt32toh(rxd->ed_cmdsts)) masks[idx/32] |= 1 << (idx & 31); } bus_dmamap_sync(sc->sc_dmat, rxq->rxq_desc_mem.gdm_map, 0, rxq->rxq_desc_mem.gdm_size, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); #if defined(DEBUG) printf("%s: rx queue %d filled at %u=%#x(%#x/%#x)\n", sc->sc_dev.dv_xname, rxprio, rxq->rxq_fi, rxq->rxq_cmdsts, masks[0], masks[1]); #endif } if ((intrmask & ETH_IR_RxBits) == 0) intrmask &= ~(ETH_IR_RxBuffer|ETH_IR_RxError); GE_FUNC_EXIT(sc, ""); return intrmask; } int gfe_rx_prime(struct gfe_softc *sc) { struct gfe_rxqueue *rxq; int error; GE_FUNC_ENTER(sc, "gfe_rx_prime"); error = gfe_rx_rxqalloc(sc, GE_RXPRIO_HI); if (error) goto bail; rxq = sc->sc_rxq[GE_RXPRIO_HI]; if ((sc->sc_flags & GE_RXACTIVE) == 0) { GE_WRITE(sc, EFRDP3, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP3, rxq->rxq_desc_busaddr); } sc->sc_intrmask |= rxq->rxq_intrbits; error = gfe_rx_rxqalloc(sc, GE_RXPRIO_MEDHI); if (error) goto bail; if ((sc->sc_flags & GE_RXACTIVE) == 0) { rxq = sc->sc_rxq[GE_RXPRIO_MEDHI]; GE_WRITE(sc, EFRDP2, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP2, rxq->rxq_desc_busaddr); sc->sc_intrmask |= rxq->rxq_intrbits; } error = gfe_rx_rxqalloc(sc, GE_RXPRIO_MEDLO); if (error) goto bail; if ((sc->sc_flags & GE_RXACTIVE) == 0) { rxq = sc->sc_rxq[GE_RXPRIO_MEDLO]; GE_WRITE(sc, EFRDP1, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP1, rxq->rxq_desc_busaddr); sc->sc_intrmask |= rxq->rxq_intrbits; } error = gfe_rx_rxqalloc(sc, GE_RXPRIO_LO); if (error) goto bail; if ((sc->sc_flags & GE_RXACTIVE) == 0) { rxq = sc->sc_rxq[GE_RXPRIO_LO]; GE_WRITE(sc, EFRDP0, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP0, rxq->rxq_desc_busaddr); sc->sc_intrmask |= rxq->rxq_intrbits; } bail: GE_FUNC_EXIT(sc, ""); return error; } void gfe_rx_cleanup(struct gfe_softc *sc, enum gfe_rxprio rxprio) { struct gfe_rxqueue *rxq = sc->sc_rxq[rxprio]; GE_FUNC_ENTER(sc, "gfe_rx_cleanup"); if (rxq == NULL) { GE_FUNC_EXIT(sc, ""); return; } if (rxq->rxq_curpkt) m_freem(rxq->rxq_curpkt); gfe_dmamem_free(sc, &rxq->rxq_desc_mem); gfe_dmamem_free(sc, &rxq->rxq_buf_mem); free(rxq, M_DEVBUF); sc->sc_rxq[rxprio] = NULL; GE_FUNC_EXIT(sc, ""); } void gfe_rx_stop(struct gfe_softc *sc, enum gfe_whack_op op) { GE_FUNC_ENTER(sc, "gfe_rx_stop"); sc->sc_flags &= ~GE_RXACTIVE; sc->sc_idlemask &= ~(ETH_IR_RxBits|ETH_IR_RxBuffer|ETH_IR_RxError); sc->sc_intrmask &= ~(ETH_IR_RxBits|ETH_IR_RxBuffer|ETH_IR_RxError); GE_WRITE(sc, EIMR, sc->sc_intrmask); GE_WRITE(sc, ESDCMR, ETH_ESDCMR_AR); do { delay(10); } while (GE_READ(sc, ESDCMR) & ETH_ESDCMR_AR); gfe_rx_cleanup(sc, GE_RXPRIO_HI); gfe_rx_cleanup(sc, GE_RXPRIO_MEDHI); gfe_rx_cleanup(sc, GE_RXPRIO_MEDLO); gfe_rx_cleanup(sc, GE_RXPRIO_LO); GE_FUNC_EXIT(sc, ""); } void gfe_tick(void *arg) { struct gfe_softc * const sc = arg; uint32_t intrmask; unsigned int tickflags; int s; GE_FUNC_ENTER(sc, "gfe_tick"); s = splnet(); tickflags = sc->sc_tickflags; sc->sc_tickflags = 0; intrmask = sc->sc_intrmask; if (tickflags & GE_TICK_TX_IFSTART) gfe_ifstart(&sc->sc_ec.ec_if); if (tickflags & GE_TICK_RX_RESTART) { intrmask |= sc->sc_idlemask; if (sc->sc_idlemask & (ETH_IR_RxBuffer_3|ETH_IR_RxError_3)) { struct gfe_rxqueue *rxq = sc->sc_rxq[GE_RXPRIO_HI]; rxq->rxq_fi = 0; GE_WRITE(sc, EFRDP3, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP3, rxq->rxq_desc_busaddr); } if (sc->sc_idlemask & (ETH_IR_RxBuffer_2|ETH_IR_RxError_2)) { struct gfe_rxqueue *rxq = sc->sc_rxq[GE_RXPRIO_MEDHI]; rxq->rxq_fi = 0; GE_WRITE(sc, EFRDP2, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP2, rxq->rxq_desc_busaddr); } if (sc->sc_idlemask & (ETH_IR_RxBuffer_1|ETH_IR_RxError_1)) { struct gfe_rxqueue *rxq = sc->sc_rxq[GE_RXPRIO_MEDLO]; rxq->rxq_fi = 0; GE_WRITE(sc, EFRDP1, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP1, rxq->rxq_desc_busaddr); } if (sc->sc_idlemask & (ETH_IR_RxBuffer_0|ETH_IR_RxError_0)) { struct gfe_rxqueue *rxq = sc->sc_rxq[GE_RXPRIO_LO]; rxq->rxq_fi = 0; GE_WRITE(sc, EFRDP0, rxq->rxq_desc_busaddr); GE_WRITE(sc, ECRDP0, rxq->rxq_desc_busaddr); } sc->sc_idlemask = 0; } if (intrmask != sc->sc_intrmask) { sc->sc_intrmask = intrmask; GE_WRITE(sc, EIMR, sc->sc_intrmask); } gfe_intr(sc); splx(s); GE_FUNC_EXIT(sc, ""); } int gfe_tx_enqueue(struct gfe_softc *sc, enum gfe_txprio txprio) { const int dcache_line_size = curcpu()->ci_ci.dcache_line_size; struct ifnet * const ifp = &sc->sc_ec.ec_if; struct gfe_txqueue * const txq = sc->sc_txq[txprio]; volatile struct gt_eth_desc * const txd = &txq->txq_descs[txq->txq_lo]; uint32_t intrmask = sc->sc_intrmask; size_t buflen; struct mbuf *m; GE_FUNC_ENTER(sc, "gfe_tx_enqueue"); /* * Anything in the pending queue to enqueue? if not, punt. Likewise * if the txq is not yet created. * otherwise grab its dmamap. */ if (txq == NULL || (m = txq->txq_pendq.ifq_head) == NULL) { GE_FUNC_EXIT(sc, "-"); return 0; } /* * Have we [over]consumed our limit of descriptors? * Do we have enough free descriptors? */ if (GE_TXDESC_MAX == txq->txq_nactive + 2) { volatile struct gt_eth_desc * const txd2 = &txq->txq_descs[txq->txq_fi]; uint32_t cmdsts; size_t pktlen; GE_TXDPOSTSYNC(sc, txq, txq->txq_fi); cmdsts = gt32toh(txd2->ed_cmdsts); if (cmdsts & TX_CMD_O) { int nextin; /* * Sometime the Discovery forgets to update the * last descriptor. See if we own the descriptor * after it (since we know we've turned that to * the discovery and if we owned it, the Discovery * gave it back). If we do, we know the Discovery * gave back this one but forgot to mark it as ours. */ nextin = txq->txq_fi + 1; if (nextin == GE_TXDESC_MAX) nextin = 0; GE_TXDPOSTSYNC(sc, txq, nextin); if (gt32toh(txq->txq_descs[nextin].ed_cmdsts) & TX_CMD_O) { GE_TXDPRESYNC(sc, txq, txq->txq_fi); GE_TXDPRESYNC(sc, txq, nextin); GE_FUNC_EXIT(sc, "@"); return 0; } #ifdef DEBUG printf("%s: txenqueue: transmitter resynced at %d\n", sc->sc_dev.dv_xname, txq->txq_fi); #endif } if (++txq->txq_fi == GE_TXDESC_MAX) txq->txq_fi = 0; txq->txq_inptr = gt32toh(txd2->ed_bufptr) - txq->txq_buf_busaddr; pktlen = (gt32toh(txd2->ed_lencnt) >> 16) & 0xffff; txq->txq_inptr += roundup(pktlen, dcache_line_size); txq->txq_nactive--; /* statistics */ ifp->if_opackets++; if (cmdsts & TX_STS_ES) ifp->if_oerrors++; GE_DPRINTF(sc, ("%%")); } buflen = roundup(m->m_pkthdr.len, dcache_line_size); /* * If this packet would wrap around the end of the buffer, reset back * to the beginning. */ if (txq->txq_outptr + buflen > GE_TXBUF_SIZE) { txq->txq_ei_gapcount += GE_TXBUF_SIZE - txq->txq_outptr; txq->txq_outptr = 0; } /* * Make sure the output packet doesn't run over the beginning of * what we've already given the GT. */ if (txq->txq_nactive > 0 && txq->txq_outptr <= txq->txq_inptr && txq->txq_outptr + buflen > txq->txq_inptr) { intrmask |= txq->txq_intrbits & (ETH_IR_TxBufferHigh|ETH_IR_TxBufferLow); if (sc->sc_intrmask != intrmask) { sc->sc_intrmask = intrmask; GE_WRITE(sc, EIMR, sc->sc_intrmask); } GE_FUNC_EXIT(sc, "#"); return 0; } /* * The end-of-list descriptor we put on last time is the starting point * for this packet. The GT is supposed to terminate list processing on * a NULL nxtptr but that currently is broken so a CPU-owned descriptor * must terminate the list. */ intrmask = sc->sc_intrmask; m_copydata(m, 0, m->m_pkthdr.len, txq->txq_buf_mem.gdm_kva + txq->txq_outptr); bus_dmamap_sync(sc->sc_dmat, txq->txq_buf_mem.gdm_map, txq->txq_outptr, buflen, BUS_DMASYNC_PREWRITE); txd->ed_bufptr = htogt32(txq->txq_buf_busaddr + txq->txq_outptr); txd->ed_lencnt = htogt32(m->m_pkthdr.len << 16); GE_TXDPRESYNC(sc, txq, txq->txq_lo); /* * Request a buffer interrupt every 2/3 of the way thru the transmit * buffer. */ txq->txq_ei_gapcount += buflen; if (txq->txq_ei_gapcount > 2 * GE_TXBUF_SIZE / 3) { txd->ed_cmdsts = htogt32(TX_CMD_FIRST|TX_CMD_LAST|TX_CMD_EI); txq->txq_ei_gapcount = 0; } else { txd->ed_cmdsts = htogt32(TX_CMD_FIRST|TX_CMD_LAST); } #if 0 GE_DPRINTF(sc, ("([%d]->%08lx.%08lx.%08lx.%08lx)", txq->txq_lo, ((unsigned long *)txd)[0], ((unsigned long *)txd)[1], ((unsigned long *)txd)[2], ((unsigned long *)txd)[3])); #endif GE_TXDPRESYNC(sc, txq, txq->txq_lo); txq->txq_outptr += buflen; /* * Tell the SDMA engine to "Fetch!" */ GE_WRITE(sc, ESDCMR, txq->txq_esdcmrbits & (ETH_ESDCMR_TXDH|ETH_ESDCMR_TXDL)); GE_DPRINTF(sc, ("(%d)", txq->txq_lo)); /* * Update the last out appropriately. */ txq->txq_nactive++; if (++txq->txq_lo == GE_TXDESC_MAX) txq->txq_lo = 0; /* * Move mbuf from the pending queue to the snd queue. */ IF_DEQUEUE(&txq->txq_pendq, m); #if NBPFILTER > 0 if (ifp->if_bpf != NULL) bpf_mtap(ifp->if_bpf, m); #endif m_freem(m); ifp->if_flags &= ~IFF_OACTIVE; /* * Since we have put an item into the packet queue, we now want * an interrupt when the transmit queue finishes processing the * list. But only update the mask if needs changing. */ intrmask |= txq->txq_intrbits & (ETH_IR_TxEndHigh|ETH_IR_TxEndLow); if (sc->sc_intrmask != intrmask) { sc->sc_intrmask = intrmask; GE_WRITE(sc, EIMR, sc->sc_intrmask); } if (ifp->if_timer == 0) ifp->if_timer = 5; GE_FUNC_EXIT(sc, "*"); return 1; } uint32_t gfe_tx_done(struct gfe_softc *sc, enum gfe_txprio txprio, uint32_t intrmask) { struct gfe_txqueue * const txq = sc->sc_txq[txprio]; struct ifnet * const ifp = &sc->sc_ec.ec_if; GE_FUNC_ENTER(sc, "gfe_tx_done"); if (txq == NULL) { GE_FUNC_EXIT(sc, ""); return intrmask; } while (txq->txq_nactive > 0) { const int dcache_line_size = curcpu()->ci_ci.dcache_line_size; volatile struct gt_eth_desc *txd = &txq->txq_descs[txq->txq_fi]; uint32_t cmdsts; size_t pktlen; GE_TXDPOSTSYNC(sc, txq, txq->txq_fi); if ((cmdsts = gt32toh(txd->ed_cmdsts)) & TX_CMD_O) { int nextin; if (txq->txq_nactive == 1) { GE_TXDPRESYNC(sc, txq, txq->txq_fi); GE_FUNC_EXIT(sc, ""); return intrmask; } /* * Sometimes the Discovery forgets to update the * ownership bit in the descriptor. See if we own the * descriptor after it (since we know we've turned * that to the Discovery and if we own it now then the * Discovery gave it back). If we do, we know the * Discovery gave back this one but forgot to mark it * as ours. */ nextin = txq->txq_fi + 1; if (nextin == GE_TXDESC_MAX) nextin = 0; GE_TXDPOSTSYNC(sc, txq, nextin); if (gt32toh(txq->txq_descs[nextin].ed_cmdsts) & TX_CMD_O) { GE_TXDPRESYNC(sc, txq, txq->txq_fi); GE_TXDPRESYNC(sc, txq, nextin); GE_FUNC_EXIT(sc, ""); return intrmask; } #ifdef DEBUG printf("%s: txdone: transmitter resynced at %d\n", sc->sc_dev.dv_xname, txq->txq_fi); #endif } #if 0 GE_DPRINTF(sc, ("([%d]<-%08lx.%08lx.%08lx.%08lx)", txq->txq_lo, ((unsigned long *)txd)[0], ((unsigned long *)txd)[1], ((unsigned long *)txd)[2], ((unsigned long *)txd)[3])); #endif GE_DPRINTF(sc, ("(%d)", txq->txq_fi)); if (++txq->txq_fi == GE_TXDESC_MAX) txq->txq_fi = 0; txq->txq_inptr = gt32toh(txd->ed_bufptr) - txq->txq_buf_busaddr; pktlen = (gt32toh(txd->ed_lencnt) >> 16) & 0xffff; bus_dmamap_sync(sc->sc_dmat, txq->txq_buf_mem.gdm_map, txq->txq_inptr, pktlen, BUS_DMASYNC_POSTWRITE); txq->txq_inptr += roundup(pktlen, dcache_line_size); /* statistics */ ifp->if_opackets++; if (cmdsts & TX_STS_ES) ifp->if_oerrors++; /* txd->ed_bufptr = 0; */ ifp->if_timer = 5; --txq->txq_nactive; } if (txq->txq_nactive != 0) panic("%s: transmit fifo%d empty but active count (%d) > 0!", sc->sc_dev.dv_xname, txprio, txq->txq_nactive); ifp->if_timer = 0; intrmask &= ~(txq->txq_intrbits & (ETH_IR_TxEndHigh|ETH_IR_TxEndLow)); intrmask &= ~(txq->txq_intrbits & (ETH_IR_TxBufferHigh|ETH_IR_TxBufferLow)); GE_FUNC_EXIT(sc, ""); return intrmask; } int gfe_tx_start(struct gfe_softc *sc, enum gfe_txprio txprio) { struct gfe_txqueue *txq; volatile struct gt_eth_desc *txd; unsigned int i; bus_addr_t addr; GE_FUNC_ENTER(sc, "gfe_tx_start"); sc->sc_intrmask &= ~(ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh| ETH_IR_TxEndLow |ETH_IR_TxBufferLow); if ((txq = sc->sc_txq[txprio]) == NULL) { int error; txq = (struct gfe_txqueue *) malloc(sizeof(*txq), M_DEVBUF, M_NOWAIT); if (txq == NULL) { GE_FUNC_EXIT(sc, ""); return ENOMEM; } memset(txq, 0, sizeof(*txq)); error = gfe_dmamem_alloc(sc, &txq->txq_desc_mem, 1, GE_TXMEM_SIZE, BUS_DMA_NOCACHE); if (error) { free(txq, M_DEVBUF); GE_FUNC_EXIT(sc, ""); return error; } error = gfe_dmamem_alloc(sc, &txq->txq_buf_mem, 1, GE_TXBUF_SIZE, 0); if (error) { gfe_dmamem_free(sc, &txq->txq_desc_mem); free(txq, M_DEVBUF); GE_FUNC_EXIT(sc, ""); return error; } sc->sc_txq[txprio] = txq; } txq->txq_descs = (volatile struct gt_eth_desc *) txq->txq_desc_mem.gdm_kva; txq->txq_desc_busaddr = txq->txq_desc_mem.gdm_map->dm_segs[0].ds_addr; txq->txq_buf_busaddr = txq->txq_buf_mem.gdm_map->dm_segs[0].ds_addr; txq->txq_pendq.ifq_maxlen = 10; txq->txq_ei_gapcount = 0; txq->txq_nactive = 0; txq->txq_fi = 0; txq->txq_lo = 0; txq->txq_inptr = GE_TXBUF_SIZE; txq->txq_outptr = 0; for (i = 0, txd = txq->txq_descs, addr = txq->txq_desc_busaddr + sizeof(*txd); i < GE_TXDESC_MAX - 1; i++, txd++, addr += sizeof(*txd)) { /* * update the nxtptr to point to the next txd. */ txd->ed_cmdsts = 0; txd->ed_nxtptr = htogt32(addr); } txq->txq_descs[GE_TXDESC_MAX-1].ed_nxtptr = htogt32(txq->txq_desc_busaddr); bus_dmamap_sync(sc->sc_dmat, txq->txq_desc_mem.gdm_map, 0, GE_TXMEM_SIZE, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); switch (txprio) { case GE_TXPRIO_HI: txq->txq_intrbits = ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh; txq->txq_esdcmrbits = ETH_ESDCMR_TXDH; txq->txq_epsrbits = ETH_EPSR_TxHigh; txq->txq_ectdp = ETH_ECTDP1(sc->sc_macno); GE_WRITE(sc, ECTDP1, txq->txq_desc_busaddr); break; case GE_TXPRIO_LO: txq->txq_intrbits = ETH_IR_TxEndLow|ETH_IR_TxBufferLow; txq->txq_esdcmrbits = ETH_ESDCMR_TXDL; txq->txq_epsrbits = ETH_EPSR_TxLow; txq->txq_ectdp = ETH_ECTDP0(sc->sc_macno); GE_WRITE(sc, ECTDP0, txq->txq_desc_busaddr); break; case GE_TXPRIO_NONE: break; } #if 0 GE_DPRINTF(sc, ("(ectdp=%#x", txq->txq_ectdp)); gt_write(sc->sc_dev.dv_parent, txq->txq_ectdp, txq->txq_desc_busaddr); GE_DPRINTF(sc, (")")); #endif /* * If we are restarting, there may be packets in the pending queue * waiting to be enqueued. Try enqueuing packets from both priority * queues until the pending queue is empty or there no room for them * on the device. */ while (gfe_tx_enqueue(sc, txprio)) continue; GE_FUNC_EXIT(sc, ""); return 0; } void gfe_tx_cleanup(struct gfe_softc *sc, enum gfe_txprio txprio, int flush) { struct gfe_txqueue * const txq = sc->sc_txq[txprio]; GE_FUNC_ENTER(sc, "gfe_tx_cleanup"); if (txq == NULL) { GE_FUNC_EXIT(sc, ""); return; } if (!flush) { GE_FUNC_EXIT(sc, ""); return; } gfe_dmamem_free(sc, &txq->txq_desc_mem); gfe_dmamem_free(sc, &txq->txq_buf_mem); free(txq, M_DEVBUF); sc->sc_txq[txprio] = NULL; GE_FUNC_EXIT(sc, "-F"); } void gfe_tx_stop(struct gfe_softc *sc, enum gfe_whack_op op) { GE_FUNC_ENTER(sc, "gfe_tx_stop"); GE_WRITE(sc, ESDCMR, ETH_ESDCMR_STDH|ETH_ESDCMR_STDL); sc->sc_intrmask = gfe_tx_done(sc, GE_TXPRIO_HI, sc->sc_intrmask); sc->sc_intrmask = gfe_tx_done(sc, GE_TXPRIO_LO, sc->sc_intrmask); sc->sc_intrmask &= ~(ETH_IR_TxEndHigh|ETH_IR_TxBufferHigh| ETH_IR_TxEndLow |ETH_IR_TxBufferLow); gfe_tx_cleanup(sc, GE_TXPRIO_HI, op == GE_WHACK_STOP); gfe_tx_cleanup(sc, GE_TXPRIO_LO, op == GE_WHACK_STOP); sc->sc_ec.ec_if.if_timer = 0; GE_FUNC_EXIT(sc, ""); } int gfe_intr(void *arg) { struct gfe_softc * const sc = arg; uint32_t cause; uint32_t intrmask = sc->sc_intrmask; int claim = 0; int cnt; GE_FUNC_ENTER(sc, "gfe_intr"); for (cnt = 0; cnt < 4; cnt++) { if (sc->sc_intrmask != intrmask) { sc->sc_intrmask = intrmask; GE_WRITE(sc, EIMR, sc->sc_intrmask); } cause = GE_READ(sc, EICR); cause &= sc->sc_intrmask; GE_DPRINTF(sc, (".%#x", cause)); if (cause == 0) break; claim = 1; GE_WRITE(sc, EICR, ~cause); #ifndef GE_NORX if (cause & (ETH_IR_RxBuffer|ETH_IR_RxError)) intrmask = gfe_rx_process(sc, cause, intrmask); #endif #ifndef GE_NOTX if (cause & (ETH_IR_TxBufferHigh|ETH_IR_TxEndHigh)) intrmask = gfe_tx_done(sc, GE_TXPRIO_HI, intrmask); if (cause & (ETH_IR_TxBufferLow|ETH_IR_TxEndLow)) intrmask = gfe_tx_done(sc, GE_TXPRIO_LO, intrmask); #endif if (cause & ETH_IR_MIIPhySTC) { sc->sc_flags |= GE_PHYSTSCHG; /* intrmask &= ~ETH_IR_MIIPhySTC; */ } } while (gfe_tx_enqueue(sc, GE_TXPRIO_HI)) continue; while (gfe_tx_enqueue(sc, GE_TXPRIO_LO)) continue; GE_FUNC_EXIT(sc, ""); return claim; } int gfe_mii_mediachange (struct ifnet *ifp) { struct gfe_softc *sc = ifp->if_softc; if (ifp->if_flags & IFF_UP) mii_mediachg(&sc->sc_mii); return (0); } void gfe_mii_mediastatus (struct ifnet *ifp, struct ifmediareq *ifmr) { struct gfe_softc *sc = ifp->if_softc; if (sc->sc_flags & GE_PHYSTSCHG) { sc->sc_flags &= ~GE_PHYSTSCHG; mii_pollstat(&sc->sc_mii); } ifmr->ifm_status = sc->sc_mii.mii_media_status; ifmr->ifm_active = sc->sc_mii.mii_media_active; } int gfe_mii_read (struct device *self, int phy, int reg) { return gt_mii_read(self, self->dv_parent, phy, reg); } void gfe_mii_write (struct device *self, int phy, int reg, int value) { gt_mii_write(self, self->dv_parent, phy, reg, value); } void gfe_mii_statchg (struct device *self) { /* struct gfe_softc *sc = (struct gfe_softc *) self; */ /* do nothing? */ } int gfe_whack(struct gfe_softc *sc, enum gfe_whack_op op) { int error = 0; GE_FUNC_ENTER(sc, "gfe_whack"); switch (op) { case GE_WHACK_RESTART: #ifndef GE_NOTX gfe_tx_stop(sc, op); #endif /* sc->sc_ec.ec_if.if_flags &= ~IFF_RUNNING; */ /* FALLTHROUGH */ case GE_WHACK_START: #ifndef GE_NOHASH if (error == 0 && sc->sc_hashtable == NULL) { error = gfe_hash_alloc(sc); if (error) break; } if (op != GE_WHACK_RESTART) gfe_hash_fill(sc); #endif #ifndef GE_NORX if (op != GE_WHACK_RESTART) { error = gfe_rx_prime(sc); if (error) break; } #endif #ifndef GE_NOTX error = gfe_tx_start(sc, GE_TXPRIO_HI); if (error) break; #endif sc->sc_ec.ec_if.if_flags |= IFF_RUNNING; GE_WRITE(sc, EPCR, sc->sc_pcr | ETH_EPCR_EN); GE_WRITE(sc, EPCXR, sc->sc_pcxr); GE_WRITE(sc, EICR, 0); GE_WRITE(sc, EIMR, sc->sc_intrmask); #ifndef GE_NOHASH GE_WRITE(sc, EHTPR, sc->sc_hash_mem.gdm_map->dm_segs->ds_addr); #endif #ifndef GE_NORX GE_WRITE(sc, ESDCMR, ETH_ESDCMR_ERD); sc->sc_flags |= GE_RXACTIVE; #endif /* FALLTHROUGH */ case GE_WHACK_CHANGE: GE_DPRINTF(sc, ("(pcr=%#x,imr=%#x)", GE_READ(sc, EPCR), GE_READ(sc, EIMR))); GE_WRITE(sc, EPCR, sc->sc_pcr | ETH_EPCR_EN); GE_WRITE(sc, EIMR, sc->sc_intrmask); gfe_ifstart(&sc->sc_ec.ec_if); GE_DPRINTF(sc, ("(ectdp0=%#x, ectdp1=%#x)", GE_READ(sc, ECTDP0), GE_READ(sc, ECTDP1))); GE_FUNC_EXIT(sc, ""); return error; case GE_WHACK_STOP: break; } #ifdef GE_DEBUG if (error) GE_DPRINTF(sc, (" failed: %d\n", error)); #endif GE_WRITE(sc, EPCR, sc->sc_pcr); GE_WRITE(sc, EIMR, 0); sc->sc_ec.ec_if.if_flags &= ~IFF_RUNNING; #ifndef GE_NOTX gfe_tx_stop(sc, GE_WHACK_STOP); #endif #ifndef GE_NORX gfe_rx_stop(sc, GE_WHACK_STOP); #endif #ifndef GE_NOHASH gfe_dmamem_free(sc, &sc->sc_hash_mem); sc->sc_hashtable = NULL; #endif GE_FUNC_EXIT(sc, ""); return error; } int gfe_hash_compute(struct gfe_softc *sc, const uint8_t eaddr[ETHER_ADDR_LEN]) { uint32_t w0, add0, add1; uint32_t result; GE_FUNC_ENTER(sc, "gfe_hash_compute"); add0 = ((uint32_t) eaddr[5] << 0) | ((uint32_t) eaddr[4] << 8) | ((uint32_t) eaddr[3] << 16); add0 = ((add0 & 0x00f0f0f0) >> 4) | ((add0 & 0x000f0f0f) << 4); add0 = ((add0 & 0x00cccccc) >> 2) | ((add0 & 0x00333333) << 2); add0 = ((add0 & 0x00aaaaaa) >> 1) | ((add0 & 0x00555555) << 1); add1 = ((uint32_t) eaddr[2] << 0) | ((uint32_t) eaddr[1] << 8) | ((uint32_t) eaddr[0] << 16); add1 = ((add1 & 0x00f0f0f0) >> 4) | ((add1 & 0x000f0f0f) << 4); add1 = ((add1 & 0x00cccccc) >> 2) | ((add1 & 0x00333333) << 2); add1 = ((add1 & 0x00aaaaaa) >> 1) | ((add1 & 0x00555555) << 1); GE_DPRINTF(sc, ("%s=", ether_sprintf(eaddr))); /* * hashResult is the 15 bits Hash entry address. * ethernetADD is a 48 bit number, which is derived from the Ethernet * MAC address, by nibble swapping in every byte (i.e MAC address * of 0x123456789abc translates to ethernetADD of 0x21436587a9cb). */ if ((sc->sc_pcr & ETH_EPCR_HM) == 0) { /* * hashResult[14:0] = hashFunc0(ethernetADD[47:0]) * * hashFunc0 calculates the hashResult in the following manner: * hashResult[ 8:0] = ethernetADD[14:8,1,0] * XOR ethernetADD[23:15] XOR ethernetADD[32:24] */ result = (add0 & 3) | ((add0 >> 6) & ~3); result ^= (add0 >> 15) ^ (add1 >> 0); result &= 0x1ff; /* * hashResult[14:9] = ethernetADD[7:2] */ result |= (add0 & ~3) << 7; /* excess bits will be masked */ GE_DPRINTF(sc, ("0(%#x)", result & 0x7fff)); } else { #define TRIBITFLIP 073516240 /* yes its in octal */ /* * hashResult[14:0] = hashFunc1(ethernetADD[47:0]) * * hashFunc1 calculates the hashResult in the following manner: * hashResult[08:00] = ethernetADD[06:14] * XOR ethernetADD[15:23] XOR ethernetADD[24:32] */ w0 = ((add0 >> 6) ^ (add0 >> 15) ^ (add1)) & 0x1ff; /* * Now bitswap those 9 bits */ result = 0; result |= ((TRIBITFLIP >> (((w0 >> 0) & 7) * 3)) & 7) << 6; result |= ((TRIBITFLIP >> (((w0 >> 3) & 7) * 3)) & 7) << 3; result |= ((TRIBITFLIP >> (((w0 >> 6) & 7) * 3)) & 7) << 0; /* * hashResult[14:09] = ethernetADD[00:05] */ result |= ((TRIBITFLIP >> (((add0 >> 0) & 7) * 3)) & 7) << 12; result |= ((TRIBITFLIP >> (((add0 >> 3) & 7) * 3)) & 7) << 9; GE_DPRINTF(sc, ("1(%#x)", result)); } GE_FUNC_EXIT(sc, ""); return result & ((sc->sc_pcr & ETH_EPCR_HS_512) ? 0x7ff : 0x7fff); } int gfe_hash_entry_op(struct gfe_softc *sc, enum gfe_hash_op op, enum gfe_rxprio prio, const uint8_t eaddr[ETHER_ADDR_LEN]) { uint64_t he; uint64_t *maybe_he_p = NULL; int limit; int hash; int maybe_hash = 0; GE_FUNC_ENTER(sc, "gfe_hash_entry_op"); hash = gfe_hash_compute(sc, eaddr); if (sc->sc_hashtable == NULL) { panic("%s:%d: hashtable == NULL!", sc->sc_dev.dv_xname, __LINE__); } /* * Assume we are going to insert so create the hash entry we * are going to insert. We also use it to match entries we * will be removing. */ he = ((uint64_t) eaddr[5] << 43) | ((uint64_t) eaddr[4] << 35) | ((uint64_t) eaddr[3] << 27) | ((uint64_t) eaddr[2] << 19) | ((uint64_t) eaddr[1] << 11) | ((uint64_t) eaddr[0] << 3) | HSH_PRIO_INS(prio) | HSH_V | HSH_R; /* * The GT will search upto 12 entries for a hit, so we must mimic that. */ hash &= sc->sc_hashmask / sizeof(he); for (limit = HSH_LIMIT; limit > 0 ; --limit) { /* * Does the GT wrap at the end, stop at the, or overrun the * end? Assume it wraps for now. Stash a copy of the * current hash entry. */ uint64_t *he_p = &sc->sc_hashtable[hash]; uint64_t thishe = *he_p; /* * If the hash entry isn't valid, that break the chain. And * this entry a good candidate for reuse. */ if ((thishe & HSH_V) == 0) { maybe_he_p = he_p; break; } /* * If the hash entry has the same address we are looking for * then ... if we are removing and the skip bit is set, its * already been removed. if are adding and the skip bit is * clear, then its already added. In either return EBUSY * indicating the op has already been done. Otherwise flip * the skip bit and return 0. */ if (((he ^ thishe) & HSH_ADDR_MASK) == 0) { if (((op == GE_HASH_REMOVE) && (thishe & HSH_S)) || ((op == GE_HASH_ADD) && (thishe & HSH_S) == 0)) return EBUSY; *he_p = thishe ^ HSH_S; bus_dmamap_sync(sc->sc_dmat, sc->sc_hash_mem.gdm_map, hash * sizeof(he), sizeof(he), BUS_DMASYNC_PREWRITE); GE_FUNC_EXIT(sc, "^"); return 0; } /* * If we haven't found a slot for the entry and this entry * is currently being skipped, return this entry. */ if (maybe_he_p == NULL && (thishe & HSH_S)) { maybe_he_p = he_p; maybe_hash = hash; } hash = (hash + 1) & (sc->sc_hashmask / sizeof(he)); } /* * If we got here, then there was no entry to remove. */ if (op == GE_HASH_REMOVE) { GE_FUNC_EXIT(sc, "?"); return ENOENT; } /* * If we couldn't find a slot, return an error. */ if (maybe_he_p == NULL) { GE_FUNC_EXIT(sc, "!"); return ENOSPC; } /* Update the entry. */ *maybe_he_p = he; bus_dmamap_sync(sc->sc_dmat, sc->sc_hash_mem.gdm_map, maybe_hash * sizeof(he), sizeof(he), BUS_DMASYNC_PREWRITE); GE_FUNC_EXIT(sc, "+"); return 0; } int gfe_hash_multichg(struct ethercom *ec, const struct ether_multi *enm, u_long cmd) { struct gfe_softc * const sc = ec->ec_if.if_softc; int error; enum gfe_hash_op op; enum gfe_rxprio prio; GE_FUNC_ENTER(sc, "hash_multichg"); /* * Is this a wildcard entry? If so and its being removed, recompute. */ if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN) != 0) { if (cmd == SIOCDELMULTI) { GE_FUNC_EXIT(sc, ""); return ENETRESET; } /* * Switch in */ sc->sc_flags |= GE_ALLMULTI; if ((sc->sc_pcr & ETH_EPCR_PM) == 0) { sc->sc_pcr |= ETH_EPCR_PM; GE_WRITE(sc, EPCR, sc->sc_pcr); GE_FUNC_EXIT(sc, ""); return 0; } GE_FUNC_EXIT(sc, ""); return ENETRESET; } prio = GE_RXPRIO_MEDLO; op = (cmd == SIOCDELMULTI ? GE_HASH_REMOVE : GE_HASH_ADD); if (sc->sc_hashtable == NULL) { GE_FUNC_EXIT(sc, ""); return 0; } error = gfe_hash_entry_op(sc, op, prio, enm->enm_addrlo); if (error == EBUSY) { printf("%s: multichg: tried to %s %s again\n", sc->sc_dev.dv_xname, cmd == SIOCDELMULTI ? "remove" : "add", ether_sprintf(enm->enm_addrlo)); GE_FUNC_EXIT(sc, ""); return 0; } if (error == ENOENT) { printf("%s: multichg: failed to remove %s: not in table\n", sc->sc_dev.dv_xname, ether_sprintf(enm->enm_addrlo)); GE_FUNC_EXIT(sc, ""); return 0; } if (error == ENOSPC) { printf("%s: multichg: failed to add %s: no space; regenerating table\n", sc->sc_dev.dv_xname, ether_sprintf(enm->enm_addrlo)); GE_FUNC_EXIT(sc, ""); return ENETRESET; } GE_DPRINTF(sc, ("%s: multichg: %s: %s succeeded\n", sc->sc_dev.dv_xname, cmd == SIOCDELMULTI ? "remove" : "add", ether_sprintf(enm->enm_addrlo))); GE_FUNC_EXIT(sc, ""); return 0; } int gfe_hash_fill(struct gfe_softc *sc) { struct ether_multistep step; struct ether_multi *enm; int error; GE_FUNC_ENTER(sc, "gfe_hash_fill"); error = gfe_hash_entry_op(sc, GE_HASH_ADD, GE_RXPRIO_HI, LLADDR(sc->sc_ec.ec_if.if_sadl)); if (error) GE_FUNC_EXIT(sc, "!"); return error; sc->sc_flags &= ~GE_ALLMULTI; if ((sc->sc_ec.ec_if.if_flags & IFF_PROMISC) == 0) sc->sc_pcr &= ~ETH_EPCR_PM; ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); while (enm != NULL) { if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { sc->sc_flags |= GE_ALLMULTI; sc->sc_pcr |= ETH_EPCR_PM; } else { error = gfe_hash_entry_op(sc, GE_HASH_ADD, GE_RXPRIO_MEDLO, enm->enm_addrlo); if (error == ENOSPC) break; } ETHER_NEXT_MULTI(step, enm); } GE_FUNC_EXIT(sc, ""); return error; } int gfe_hash_alloc(struct gfe_softc *sc) { int error; GE_FUNC_ENTER(sc, "gfe_hash_alloc"); sc->sc_hashmask = (sc->sc_pcr & ETH_EPCR_HS_512 ? 16 : 256)*1024 - 1; error = gfe_dmamem_alloc(sc, &sc->sc_hash_mem, 1, sc->sc_hashmask + 1, BUS_DMA_NOCACHE); if (error) { printf("%s: failed to allocate %d bytes for hash table: %d\n", sc->sc_dev.dv_xname, sc->sc_hashmask + 1, error); GE_FUNC_EXIT(sc, ""); return error; } sc->sc_hashtable = (uint64_t *) sc->sc_hash_mem.gdm_kva; memset(sc->sc_hashtable, 0, sc->sc_hashmask + 1); bus_dmamap_sync(sc->sc_dmat, sc->sc_hash_mem.gdm_map, 0, sc->sc_hashmask + 1, BUS_DMASYNC_PREWRITE); GE_FUNC_EXIT(sc, ""); return 0; }