/* $OpenBSD: if_vte.c,v 1.24 2020/07/10 13:26:38 patrick Exp $ */ /*- * Copyright (c) 2010, Pyun YongHyeon * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* Driver for DM&P Electronics, Inc, Vortex86 RDC R6040 FastEthernet. */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #include #include #include #include #include #include int vte_match(struct device *, void *, void *); void vte_attach(struct device *, struct device *, void *); int vte_detach(struct device *, int); int vte_miibus_readreg(struct device *, int, int); void vte_miibus_writereg(struct device *, int, int, int); void vte_miibus_statchg(struct device *); int vte_init(struct ifnet *); void vte_start(struct ifnet *); int vte_ioctl(struct ifnet *, u_long, caddr_t); void vte_watchdog(struct ifnet *); int vte_mediachange(struct ifnet *); void vte_mediastatus(struct ifnet *, struct ifmediareq *); int vte_intr(void *); int vte_dma_alloc(struct vte_softc *); void vte_dma_free(struct vte_softc *); struct vte_txdesc * vte_encap(struct vte_softc *, struct mbuf **); void vte_get_macaddr(struct vte_softc *); int vte_init_rx_ring(struct vte_softc *); int vte_init_tx_ring(struct vte_softc *); void vte_mac_config(struct vte_softc *); int vte_newbuf(struct vte_softc *, struct vte_rxdesc *, int); void vte_reset(struct vte_softc *); void vte_rxeof(struct vte_softc *); void vte_iff(struct vte_softc *); void vte_start_mac(struct vte_softc *); void vte_stats_clear(struct vte_softc *); void vte_stats_update(struct vte_softc *); void vte_stop(struct vte_softc *); void vte_stop_mac(struct vte_softc *); void vte_tick(void *); void vte_txeof(struct vte_softc *); const struct pci_matchid vte_devices[] = { { PCI_VENDOR_RDC, PCI_PRODUCT_RDC_R6040_ETHER } }; struct cfattach vte_ca = { sizeof(struct vte_softc), vte_match, vte_attach }; struct cfdriver vte_cd = { NULL, "vte", DV_IFNET }; int vtedebug = 0; #define DPRINTF(x) do { if (vtedebug) printf x; } while (0) int vte_miibus_readreg(struct device *dev, int phy, int reg) { struct vte_softc *sc = (struct vte_softc *)dev; int i; CSR_WRITE_2(sc, VTE_MMDIO, MMDIO_READ | (phy << MMDIO_PHY_ADDR_SHIFT) | (reg << MMDIO_REG_ADDR_SHIFT)); for (i = VTE_PHY_TIMEOUT; i > 0; i--) { DELAY(5); if ((CSR_READ_2(sc, VTE_MMDIO) & MMDIO_READ) == 0) break; } if (i == 0) { printf("%s: phy read timeout: phy %d, reg %d\n", sc->sc_dev.dv_xname, phy, reg); return (0); } return (CSR_READ_2(sc, VTE_MMRD)); } void vte_miibus_writereg(struct device *dev, int phy, int reg, int val) { struct vte_softc *sc = (struct vte_softc *)dev; int i; CSR_WRITE_2(sc, VTE_MMWD, val); CSR_WRITE_2(sc, VTE_MMDIO, MMDIO_WRITE | (phy << MMDIO_PHY_ADDR_SHIFT) | (reg << MMDIO_REG_ADDR_SHIFT)); for (i = VTE_PHY_TIMEOUT; i > 0; i--) { DELAY(5); if ((CSR_READ_2(sc, VTE_MMDIO) & MMDIO_WRITE) == 0) break; } if (i == 0) printf("%s: phy write timeout: phy %d, reg %d\n", sc->sc_dev.dv_xname, phy, reg); } void vte_miibus_statchg(struct device *dev) { struct vte_softc *sc = (struct vte_softc *)dev; struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mii_data *mii; uint16_t val; if ((ifp->if_flags & IFF_RUNNING) == 0) return; mii = &sc->sc_miibus; sc->vte_flags &= ~VTE_FLAG_LINK; if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == (IFM_ACTIVE | IFM_AVALID)) { switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: case IFM_100_TX: sc->vte_flags |= VTE_FLAG_LINK; break; default: break; } } /* Stop RX/TX MACs. */ vte_stop_mac(sc); /* Program MACs with resolved duplex and flow control. */ if ((sc->vte_flags & VTE_FLAG_LINK) != 0) { /* * Timer waiting time : (63 + TIMER * 64) MII clock. * MII clock : 25MHz(100Mbps) or 2.5MHz(10Mbps). */ if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) val = 18 << VTE_IM_TIMER_SHIFT; else val = 1 << VTE_IM_TIMER_SHIFT; sc->vte_int_rx_mod = VTE_IM_RX_BUNDLE_DEFAULT; val |= sc->vte_int_rx_mod << VTE_IM_BUNDLE_SHIFT; /* 48.6us for 100Mbps, 50.8us for 10Mbps */ CSR_WRITE_2(sc, VTE_MRICR, val); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) val = 18 << VTE_IM_TIMER_SHIFT; else val = 1 << VTE_IM_TIMER_SHIFT; sc->vte_int_tx_mod = VTE_IM_TX_BUNDLE_DEFAULT; val |= sc->vte_int_tx_mod << VTE_IM_BUNDLE_SHIFT; /* 48.6us for 100Mbps, 50.8us for 10Mbps */ CSR_WRITE_2(sc, VTE_MTICR, val); vte_mac_config(sc); vte_start_mac(sc); } } void vte_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) { struct vte_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; mii_pollstat(mii); ifmr->ifm_status = mii->mii_media_status; ifmr->ifm_active = mii->mii_media_active; } int vte_mediachange(struct ifnet *ifp) { struct vte_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; int error; if (mii->mii_instance != 0) { struct mii_softc *miisc; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } error = mii_mediachg(mii); return (error); } int vte_match(struct device *dev, void *match, void *aux) { return pci_matchbyid((struct pci_attach_args *)aux, vte_devices, sizeof(vte_devices) / sizeof(vte_devices[0])); } void vte_get_macaddr(struct vte_softc *sc) { uint16_t mid; /* * It seems there is no way to reload station address and * it is supposed to be set by BIOS. */ mid = CSR_READ_2(sc, VTE_MID0L); sc->vte_eaddr[0] = (mid >> 0) & 0xFF; sc->vte_eaddr[1] = (mid >> 8) & 0xFF; mid = CSR_READ_2(sc, VTE_MID0M); sc->vte_eaddr[2] = (mid >> 0) & 0xFF; sc->vte_eaddr[3] = (mid >> 8) & 0xFF; mid = CSR_READ_2(sc, VTE_MID0H); sc->vte_eaddr[4] = (mid >> 0) & 0xFF; sc->vte_eaddr[5] = (mid >> 8) & 0xFF; } void vte_attach(struct device *parent, struct device *self, void *aux) { struct vte_softc *sc = (struct vte_softc *)self; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr; struct ifnet *ifp; pcireg_t memtype; int error = 0; memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, VTE_PCI_LOMEM); if (pci_mapreg_map(pa, VTE_PCI_LOMEM, memtype, 0, &sc->sc_mem_bt, &sc->sc_mem_bh, NULL, &sc->sc_mem_size, 0)) { printf(": can't map mem space\n"); return; } if (pci_intr_map(pa, &ih) != 0) { printf(": can't map interrupt\n"); goto fail; } /* * Allocate IRQ */ intrstr = pci_intr_string(pc, ih); sc->sc_irq_handle = pci_intr_establish(pc, ih, IPL_NET, vte_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_irq_handle == NULL) { printf(": could not establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); goto fail; } printf(": %s", intrstr); sc->sc_dmat = pa->pa_dmat; sc->sc_pct = pa->pa_pc; sc->sc_pcitag = pa->pa_tag; /* Reset the ethernet controller. */ vte_reset(sc); error = vte_dma_alloc(sc); if (error) goto fail; /* Load station address. */ vte_get_macaddr(sc); ifp = &sc->sc_arpcom.ac_if; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = vte_ioctl; ifp->if_start = vte_start; ifp->if_watchdog = vte_watchdog; ifq_set_maxlen(&ifp->if_snd, VTE_TX_RING_CNT - 1); bcopy(sc->vte_eaddr, sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); ifp->if_capabilities = IFCAP_VLAN_MTU; printf(", address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr)); /* * Set up MII bus. * BIOS would have initialized VTE_MPSCCR to catch PHY * status changes so driver may be able to extract * configured PHY address. Since it's common to see BIOS * fails to initialize the register(including the sample * board I have), let mii(4) probe it. This is more * reliable than relying on BIOS's initialization. * * Advertising flow control capability to mii(4) was * intentionally disabled due to severe problems in TX * pause frame generation. See vte_rxeof() for more * details. */ sc->sc_miibus.mii_ifp = ifp; sc->sc_miibus.mii_readreg = vte_miibus_readreg; sc->sc_miibus.mii_writereg = vte_miibus_writereg; sc->sc_miibus.mii_statchg = vte_miibus_statchg; ifmedia_init(&sc->sc_miibus.mii_media, 0, vte_mediachange, vte_mediastatus); mii_attach(self, &sc->sc_miibus, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); if (LIST_FIRST(&sc->sc_miibus.mii_phys) == NULL) { printf("%s: no PHY found!\n", sc->sc_dev.dv_xname); ifmedia_add(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL, 0, NULL); ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL); } else ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_AUTO); if_attach(ifp); ether_ifattach(ifp); timeout_set(&sc->vte_tick_ch, vte_tick, sc); return; fail: vte_detach(&sc->sc_dev, 0); } int vte_detach(struct device *self, int flags) { struct vte_softc *sc = (struct vte_softc *)self; struct ifnet *ifp = &sc->sc_arpcom.ac_if; int s; s = splnet(); vte_stop(sc); splx(s); mii_detach(&sc->sc_miibus, MII_PHY_ANY, MII_OFFSET_ANY); /* Delete all remaining media. */ ifmedia_delete_instance(&sc->sc_miibus.mii_media, IFM_INST_ANY); ether_ifdetach(ifp); if_detach(ifp); vte_dma_free(sc); if (sc->sc_irq_handle != NULL) { pci_intr_disestablish(sc->sc_pct, sc->sc_irq_handle); sc->sc_irq_handle = NULL; } return (0); } int vte_dma_alloc(struct vte_softc *sc) { struct vte_txdesc *txd; struct vte_rxdesc *rxd; int error, i, nsegs; /* Create DMA stuffs for TX ring */ error = bus_dmamap_create(sc->sc_dmat, VTE_TX_RING_SZ, 1, VTE_TX_RING_SZ, 0, BUS_DMA_NOWAIT, &sc->vte_cdata.vte_tx_ring_map); if (error) return (ENOBUFS); /* Allocate DMA'able memory for TX ring */ error = bus_dmamem_alloc(sc->sc_dmat, VTE_TX_RING_SZ, ETHER_ALIGN, 0, &sc->vte_cdata.vte_tx_ring_seg, 1, &nsegs, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (error) { printf("%s: could not allocate DMA'able memory for Tx ring.\n", sc->sc_dev.dv_xname); return (error); } error = bus_dmamem_map(sc->sc_dmat, &sc->vte_cdata.vte_tx_ring_seg, nsegs, VTE_TX_RING_SZ, (caddr_t *)&sc->vte_cdata.vte_tx_ring, BUS_DMA_NOWAIT); if (error) return (ENOBUFS); /* Load the DMA map for Tx ring. */ error = bus_dmamap_load(sc->sc_dmat, sc->vte_cdata.vte_tx_ring_map, sc->vte_cdata.vte_tx_ring, VTE_TX_RING_SZ, NULL, BUS_DMA_WAITOK); if (error) { printf("%s: could not load DMA'able memory for Tx ring.\n", sc->sc_dev.dv_xname); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)&sc->vte_cdata.vte_tx_ring, 1); return (error); } sc->vte_cdata.vte_tx_ring_paddr = sc->vte_cdata.vte_tx_ring_map->dm_segs[0].ds_addr; /* Create DMA stuffs for RX ring */ error = bus_dmamap_create(sc->sc_dmat, VTE_RX_RING_SZ, 1, VTE_RX_RING_SZ, 0, BUS_DMA_NOWAIT, &sc->vte_cdata.vte_rx_ring_map); if (error) return (ENOBUFS); /* Allocate DMA'able memory for RX ring */ error = bus_dmamem_alloc(sc->sc_dmat, VTE_RX_RING_SZ, ETHER_ALIGN, 0, &sc->vte_cdata.vte_rx_ring_seg, 1, &nsegs, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (error) { printf("%s: could not allocate DMA'able memory for Rx ring.\n", sc->sc_dev.dv_xname); return (error); } error = bus_dmamem_map(sc->sc_dmat, &sc->vte_cdata.vte_rx_ring_seg, nsegs, VTE_RX_RING_SZ, (caddr_t *)&sc->vte_cdata.vte_rx_ring, BUS_DMA_NOWAIT); if (error) return (ENOBUFS); /* Load the DMA map for Rx ring. */ error = bus_dmamap_load(sc->sc_dmat, sc->vte_cdata.vte_rx_ring_map, sc->vte_cdata.vte_rx_ring, VTE_RX_RING_SZ, NULL, BUS_DMA_WAITOK); if (error) { printf("%s: could not load DMA'able memory for Rx ring.\n", sc->sc_dev.dv_xname); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->vte_cdata.vte_rx_ring, 1); return (error); } sc->vte_cdata.vte_rx_ring_paddr = sc->vte_cdata.vte_rx_ring_map->dm_segs[0].ds_addr; /* Create DMA maps for Tx buffers. */ for (i = 0; i < VTE_TX_RING_CNT; i++) { txd = &sc->vte_cdata.vte_txdesc[i]; txd->tx_m = NULL; txd->tx_dmamap = NULL; error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &txd->tx_dmamap); if (error) { printf("%s: could not create Tx dmamap.\n", sc->sc_dev.dv_xname); return (error); } } /* Create DMA maps for Rx buffers. */ error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->vte_cdata.vte_rx_sparemap); if (error) { printf("%s: could not create spare Rx dmamap.\n", sc->sc_dev.dv_xname); return (error); } for (i = 0; i < VTE_RX_RING_CNT; i++) { rxd = &sc->vte_cdata.vte_rxdesc[i]; rxd->rx_m = NULL; rxd->rx_dmamap = NULL; error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &rxd->rx_dmamap); if (error) { printf("%s: could not create Rx dmamap.\n", sc->sc_dev.dv_xname); return (error); } } return (0); } void vte_dma_free(struct vte_softc *sc) { struct vte_txdesc *txd; struct vte_rxdesc *rxd; int i; /* TX buffers. */ for (i = 0; i < VTE_TX_RING_CNT; i++) { txd = &sc->vte_cdata.vte_txdesc[i]; if (txd->tx_dmamap != NULL) { bus_dmamap_destroy(sc->sc_dmat, txd->tx_dmamap); txd->tx_dmamap = NULL; } } /* Rx buffers */ for (i = 0; i < VTE_RX_RING_CNT; i++) { rxd = &sc->vte_cdata.vte_rxdesc[i]; if (rxd->rx_dmamap != NULL) { bus_dmamap_destroy(sc->sc_dmat, rxd->rx_dmamap); rxd->rx_dmamap = NULL; } } if (sc->vte_cdata.vte_rx_sparemap != NULL) { bus_dmamap_destroy(sc->sc_dmat, sc->vte_cdata.vte_rx_sparemap); sc->vte_cdata.vte_rx_sparemap = NULL; } /* TX descriptor ring. */ if (sc->vte_cdata.vte_tx_ring_map != NULL) bus_dmamap_unload(sc->sc_dmat, sc->vte_cdata.vte_tx_ring_map); if (sc->vte_cdata.vte_tx_ring_map != NULL && sc->vte_cdata.vte_tx_ring != NULL) bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->vte_cdata.vte_tx_ring, 1); sc->vte_cdata.vte_tx_ring = NULL; sc->vte_cdata.vte_tx_ring_map = NULL; /* RX ring. */ if (sc->vte_cdata.vte_rx_ring_map != NULL) bus_dmamap_unload(sc->sc_dmat, sc->vte_cdata.vte_rx_ring_map); if (sc->vte_cdata.vte_rx_ring_map != NULL && sc->vte_cdata.vte_rx_ring != NULL) bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->vte_cdata.vte_rx_ring, 1); sc->vte_cdata.vte_rx_ring = NULL; sc->vte_cdata.vte_rx_ring_map = NULL; } struct vte_txdesc * vte_encap(struct vte_softc *sc, struct mbuf **m_head) { struct vte_txdesc *txd; struct mbuf *m, *n; int copy, error, padlen; txd = &sc->vte_cdata.vte_txdesc[sc->vte_cdata.vte_tx_prod]; m = *m_head; /* * Controller doesn't auto-pad, so we have to make sure pad * short frames out to the minimum frame length. */ if (m->m_pkthdr.len < VTE_MIN_FRAMELEN) padlen = VTE_MIN_FRAMELEN - m->m_pkthdr.len; else padlen = 0; /* * Controller does not support multi-fragmented TX buffers. * Controller spends most of its TX processing time in * de-fragmenting TX buffers. Either faster CPU or more * advanced controller DMA engine is required to speed up * TX path processing. * To mitigate the de-fragmenting issue, perform deep copy * from fragmented mbuf chains to a pre-allocated mbuf * cluster with extra cost of kernel memory. For frames * that is composed of single TX buffer, the deep copy is * bypassed. */ copy = 0; if (m->m_next != NULL) copy++; if (padlen > 0 && (padlen > m_trailingspace(m))) copy++; if (copy != 0) { /* Avoid expensive m_defrag(9) and do deep copy. */ n = sc->vte_cdata.vte_txmbufs[sc->vte_cdata.vte_tx_prod]; m_copydata(m, 0, m->m_pkthdr.len, mtod(n, char *)); n->m_pkthdr.len = m->m_pkthdr.len; n->m_len = m->m_pkthdr.len; m = n; txd->tx_flags |= VTE_TXMBUF; } if (padlen > 0) { /* Zero out the bytes in the pad area. */ bzero(mtod(m, char *) + m->m_pkthdr.len, padlen); m->m_pkthdr.len += padlen; m->m_len = m->m_pkthdr.len; } error = bus_dmamap_load_mbuf(sc->sc_dmat, txd->tx_dmamap, m, BUS_DMA_NOWAIT); if (error != 0) { txd->tx_flags &= ~VTE_TXMBUF; return (NULL); } bus_dmamap_sync(sc->sc_dmat, txd->tx_dmamap, 0, txd->tx_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); txd->tx_desc->dtlen = htole16(VTE_TX_LEN(txd->tx_dmamap->dm_segs[0].ds_len)); txd->tx_desc->dtbp = htole32(txd->tx_dmamap->dm_segs[0].ds_addr); sc->vte_cdata.vte_tx_cnt++; /* Update producer index. */ VTE_DESC_INC(sc->vte_cdata.vte_tx_prod, VTE_TX_RING_CNT); /* Finally hand over ownership to controller. */ txd->tx_desc->dtst = htole16(VTE_DTST_TX_OWN); txd->tx_m = m; return (txd); } void vte_start(struct ifnet *ifp) { struct vte_softc *sc = ifp->if_softc; struct vte_txdesc *txd; struct mbuf *m_head; int enq = 0; if (!(ifp->if_flags & IFF_RUNNING) || ifq_is_oactive(&ifp->if_snd)) return; for (;;) { /* Reserve one free TX descriptor. */ if (sc->vte_cdata.vte_tx_cnt >= VTE_TX_RING_CNT - 1) { ifq_set_oactive(&ifp->if_snd); break; } m_head = ifq_dequeue(&ifp->if_snd); if (m_head == NULL) break; /* * Pack the data into the transmit ring. If we * don't have room, set the OACTIVE flag and wait * for the NIC to drain the ring. */ if ((txd = vte_encap(sc, &m_head)) == NULL) { break; } enq++; #if NBPFILTER > 0 /* * If there's a BPF listener, bounce a copy of this frame * to him. */ if (ifp->if_bpf != NULL) bpf_mtap_ether(ifp->if_bpf, m_head, BPF_DIRECTION_OUT); #endif /* Free consumed TX frame. */ if ((txd->tx_flags & VTE_TXMBUF) != 0) m_freem(m_head); } if (enq > 0) { bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_tx_ring_map, 0, sc->vte_cdata.vte_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); CSR_WRITE_2(sc, VTE_TX_POLL, TX_POLL_START); ifp->if_timer = VTE_TX_TIMEOUT; } } void vte_watchdog(struct ifnet *ifp) { struct vte_softc *sc = ifp->if_softc; printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname); ifp->if_oerrors++; vte_init(ifp); if (!ifq_empty(&ifp->if_snd)) vte_start(ifp); } int vte_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct vte_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; struct ifreq *ifr = (struct ifreq *)data; int s, error = 0; s = splnet(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; if (!(ifp->if_flags & IFF_RUNNING)) vte_init(ifp); break; case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) error = ENETRESET; else vte_init(ifp); } else { if (ifp->if_flags & IFF_RUNNING) vte_stop(sc); } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); break; default: error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data); break; } if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) vte_iff(sc); error = 0; } splx(s); return (error); } void vte_mac_config(struct vte_softc *sc) { struct mii_data *mii; uint16_t mcr; mii = &sc->sc_miibus; mcr = CSR_READ_2(sc, VTE_MCR0); mcr &= ~(MCR0_FC_ENB | MCR0_FULL_DUPLEX); if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { mcr |= MCR0_FULL_DUPLEX; #ifdef notyet if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) mcr |= MCR0_FC_ENB; /* * The data sheet is not clear whether the controller * honors received pause frames or not. The is no * separate control bit for RX pause frame so just * enable MCR0_FC_ENB bit. */ if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) mcr |= MCR0_FC_ENB; #endif } CSR_WRITE_2(sc, VTE_MCR0, mcr); } void vte_stats_clear(struct vte_softc *sc) { /* Reading counter registers clears its contents. */ CSR_READ_2(sc, VTE_CNT_RX_DONE); CSR_READ_2(sc, VTE_CNT_MECNT0); CSR_READ_2(sc, VTE_CNT_MECNT1); CSR_READ_2(sc, VTE_CNT_MECNT2); CSR_READ_2(sc, VTE_CNT_MECNT3); CSR_READ_2(sc, VTE_CNT_TX_DONE); CSR_READ_2(sc, VTE_CNT_MECNT4); CSR_READ_2(sc, VTE_CNT_PAUSE); } void vte_stats_update(struct vte_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct vte_hw_stats *stat; uint16_t value; stat = &sc->vte_stats; CSR_READ_2(sc, VTE_MECISR); /* RX stats. */ stat->rx_frames += CSR_READ_2(sc, VTE_CNT_RX_DONE); value = CSR_READ_2(sc, VTE_CNT_MECNT0); stat->rx_bcast_frames += (value >> 8); stat->rx_mcast_frames += (value & 0xFF); value = CSR_READ_2(sc, VTE_CNT_MECNT1); stat->rx_runts += (value >> 8); stat->rx_crcerrs += (value & 0xFF); value = CSR_READ_2(sc, VTE_CNT_MECNT2); stat->rx_long_frames += (value & 0xFF); value = CSR_READ_2(sc, VTE_CNT_MECNT3); stat->rx_fifo_full += (value >> 8); stat->rx_desc_unavail += (value & 0xFF); /* TX stats. */ stat->tx_frames += CSR_READ_2(sc, VTE_CNT_TX_DONE); value = CSR_READ_2(sc, VTE_CNT_MECNT4); stat->tx_underruns += (value >> 8); stat->tx_late_colls += (value & 0xFF); value = CSR_READ_2(sc, VTE_CNT_PAUSE); stat->tx_pause_frames += (value >> 8); stat->rx_pause_frames += (value & 0xFF); /* Update ifp counters. */ ifp->if_collisions = stat->tx_late_colls; ifp->if_oerrors = stat->tx_late_colls + stat->tx_underruns; ifp->if_ierrors = stat->rx_crcerrs + stat->rx_runts + stat->rx_long_frames + stat->rx_fifo_full; } int vte_intr(void *arg) { struct vte_softc *sc = arg; struct ifnet *ifp = &sc->sc_arpcom.ac_if; uint16_t status; int n; int claimed = 0; /* Reading VTE_MISR acknowledges interrupts. */ status = CSR_READ_2(sc, VTE_MISR); if ((status & VTE_INTRS) == 0) return (0); /* Disable interrupts. */ CSR_WRITE_2(sc, VTE_MIER, 0); for (n = 8; (status & VTE_INTRS) != 0;) { if ((ifp->if_flags & IFF_RUNNING) == 0) break; claimed = 1; if (status & (MISR_RX_DONE | MISR_RX_DESC_UNAVAIL | MISR_RX_FIFO_FULL)) vte_rxeof(sc); if (status & MISR_TX_DONE) vte_txeof(sc); if (status & MISR_EVENT_CNT_OFLOW) vte_stats_update(sc); if (!ifq_empty(&ifp->if_snd)) vte_start(ifp); if (--n > 0) status = CSR_READ_2(sc, VTE_MISR); else break; } /* Re-enable interrupts. */ CSR_WRITE_2(sc, VTE_MIER, VTE_INTRS); return (claimed); } void vte_txeof(struct vte_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct vte_txdesc *txd; uint16_t status; int cons, prog; if (sc->vte_cdata.vte_tx_cnt == 0) return; bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_tx_ring_map, 0, sc->vte_cdata.vte_tx_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); cons = sc->vte_cdata.vte_tx_cons; /* * Go through our TX list and free mbufs for those * frames which have been transmitted. */ for (prog = 0; sc->vte_cdata.vte_tx_cnt > 0; prog++) { txd = &sc->vte_cdata.vte_txdesc[cons]; status = letoh16(txd->tx_desc->dtst); if (status & VTE_DTST_TX_OWN) break; sc->vte_cdata.vte_tx_cnt--; /* Reclaim transmitted mbufs. */ bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); if ((txd->tx_flags & VTE_TXMBUF) == 0) m_freem(txd->tx_m); txd->tx_flags &= ~VTE_TXMBUF; txd->tx_m = NULL; prog++; VTE_DESC_INC(cons, VTE_TX_RING_CNT); } if (prog > 0) { ifq_clr_oactive(&ifp->if_snd); sc->vte_cdata.vte_tx_cons = cons; /* * Unarm watchdog timer only when there is no pending * frames in TX queue. */ if (sc->vte_cdata.vte_tx_cnt == 0) ifp->if_timer = 0; } } int vte_newbuf(struct vte_softc *sc, struct vte_rxdesc *rxd, int init) { struct mbuf *m; bus_dmamap_t map; int error; MGETHDR(m, init ? M_WAITOK : M_DONTWAIT, MT_DATA); if (m == NULL) return (ENOBUFS); MCLGET(m, init ? M_WAITOK : M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(m); return (ENOBUFS); } m->m_len = m->m_pkthdr.len = MCLBYTES; m_adj(m, sizeof(uint32_t)); error = bus_dmamap_load_mbuf(sc->sc_dmat, sc->vte_cdata.vte_rx_sparemap, m, BUS_DMA_NOWAIT); if (error != 0) { if (!error) { bus_dmamap_unload(sc->sc_dmat, sc->vte_cdata.vte_rx_sparemap); error = EFBIG; printf("%s: too many segments?!\n", sc->sc_dev.dv_xname); } m_freem(m); if (init) printf("%s: can't load RX mbuf\n", sc->sc_dev.dv_xname); return (error); } if (rxd->rx_m != NULL) { bus_dmamap_sync(sc->sc_dmat, rxd->rx_dmamap, 0, rxd->rx_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); } map = rxd->rx_dmamap; rxd->rx_dmamap = sc->vte_cdata.vte_rx_sparemap; sc->vte_cdata.vte_rx_sparemap = map; rxd->rx_m = m; rxd->rx_desc->drbp = htole32(rxd->rx_dmamap->dm_segs[0].ds_addr); rxd->rx_desc->drlen = htole16(VTE_RX_LEN(rxd->rx_dmamap->dm_segs[0].ds_len)); rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN); return (0); } void vte_rxeof(struct vte_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct vte_rxdesc *rxd; struct mbuf *m; struct mbuf_list ml = MBUF_LIST_INITIALIZER(); uint16_t status, total_len; int cons, prog; bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_rx_ring_map, 0, sc->vte_cdata.vte_rx_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); cons = sc->vte_cdata.vte_rx_cons; for (prog = 0; (ifp->if_flags & IFF_RUNNING) != 0; prog++, VTE_DESC_INC(cons, VTE_RX_RING_CNT)) { rxd = &sc->vte_cdata.vte_rxdesc[cons]; status = letoh16(rxd->rx_desc->drst); if (status & VTE_DRST_RX_OWN) break; total_len = VTE_RX_LEN(letoh16(rxd->rx_desc->drlen)); m = rxd->rx_m; if ((status & VTE_DRST_RX_OK) == 0) { /* Discard errored frame. */ rxd->rx_desc->drlen = htole16(MCLBYTES - sizeof(uint32_t)); rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN); continue; } if (vte_newbuf(sc, rxd, 0) != 0) { ifp->if_iqdrops++; rxd->rx_desc->drlen = htole16(MCLBYTES - sizeof(uint32_t)); rxd->rx_desc->drst = htole16(VTE_DRST_RX_OWN); continue; } /* * It seems there is no way to strip FCS bytes. */ m->m_pkthdr.len = m->m_len = total_len - ETHER_CRC_LEN; ml_enqueue(&ml, m); } if_input(ifp, &ml); if (prog > 0) { /* Update the consumer index. */ sc->vte_cdata.vte_rx_cons = cons; /* * Sync updated RX descriptors such that controller see * modified RX buffer addresses. */ bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_rx_ring_map, 0, sc->vte_cdata.vte_rx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); #ifdef notyet /* * Update residue counter. Controller does not * keep track of number of available RX descriptors * such that driver should have to update VTE_MRDCR * to make controller know how many free RX * descriptors were added to controller. This is * a similar mechanism used in VIA velocity * controllers and it indicates controller just * polls OWN bit of current RX descriptor pointer. * A couple of severe issues were seen on sample * board where the controller continuously emits TX * pause frames once RX pause threshold crossed. * Once triggered it never recovered form that * state, I couldn't find a way to make it back to * work at least. This issue effectively * disconnected the system from network. Also, the * controller used 00:00:00:00:00:00 as source * station address of TX pause frame. Probably this * is one of reason why vendor recommends not to * enable flow control on R6040 controller. */ CSR_WRITE_2(sc, VTE_MRDCR, prog | (((VTE_RX_RING_CNT * 2) / 10) << VTE_MRDCR_RX_PAUSE_THRESH_SHIFT)); #endif } } void vte_tick(void *arg) { struct vte_softc *sc = arg; struct mii_data *mii = &sc->sc_miibus; int s; s = splnet(); mii_tick(mii); vte_stats_update(sc); timeout_add_sec(&sc->vte_tick_ch, 1); splx(s); } void vte_reset(struct vte_softc *sc) { uint16_t mcr; int i; mcr = CSR_READ_2(sc, VTE_MCR1); CSR_WRITE_2(sc, VTE_MCR1, mcr | MCR1_MAC_RESET); for (i = VTE_RESET_TIMEOUT; i > 0; i--) { DELAY(10); if ((CSR_READ_2(sc, VTE_MCR1) & MCR1_MAC_RESET) == 0) break; } if (i == 0) printf("%s: reset timeout(0x%04x)!\n", sc->sc_dev.dv_xname, mcr); /* * Follow the guide of vendor recommended way to reset MAC. * Vendor confirms relying on MCR1_MAC_RESET of VTE_MCR1 is * not reliable so manually reset internal state machine. */ CSR_WRITE_2(sc, VTE_MACSM, 0x0002); CSR_WRITE_2(sc, VTE_MACSM, 0); DELAY(5000); } int vte_init(struct ifnet *ifp) { struct vte_softc *sc = ifp->if_softc; bus_addr_t paddr; uint8_t *eaddr; int error; /* * Cancel any pending I/O. */ vte_stop(sc); /* * Reset the chip to a known state. */ vte_reset(sc); /* Initialize RX descriptors. */ error = vte_init_rx_ring(sc); if (error != 0) { printf("%s: no memory for Rx buffers.\n", sc->sc_dev.dv_xname); vte_stop(sc); return (error); } error = vte_init_tx_ring(sc); if (error != 0) { printf("%s: no memory for Tx buffers.\n", sc->sc_dev.dv_xname); vte_stop(sc); return (error); } /* * Reprogram the station address. Controller supports up * to 4 different station addresses so driver programs the * first station address as its own ethernet address and * configure the remaining three addresses as perfect * multicast addresses. */ eaddr = LLADDR(ifp->if_sadl); CSR_WRITE_2(sc, VTE_MID0L, eaddr[1] << 8 | eaddr[0]); CSR_WRITE_2(sc, VTE_MID0M, eaddr[3] << 8 | eaddr[2]); CSR_WRITE_2(sc, VTE_MID0H, eaddr[5] << 8 | eaddr[4]); /* Set TX descriptor base addresses. */ paddr = sc->vte_cdata.vte_tx_ring_paddr; CSR_WRITE_2(sc, VTE_MTDSA1, paddr >> 16); CSR_WRITE_2(sc, VTE_MTDSA0, paddr & 0xFFFF); /* Set RX descriptor base addresses. */ paddr = sc->vte_cdata.vte_rx_ring_paddr; CSR_WRITE_2(sc, VTE_MRDSA1, paddr >> 16); CSR_WRITE_2(sc, VTE_MRDSA0, paddr & 0xFFFF); /* * Initialize RX descriptor residue counter and set RX * pause threshold to 20% of available RX descriptors. * See comments on vte_rxeof() for details on flow control * issues. */ CSR_WRITE_2(sc, VTE_MRDCR, (VTE_RX_RING_CNT & VTE_MRDCR_RESIDUE_MASK) | (((VTE_RX_RING_CNT * 2) / 10) << VTE_MRDCR_RX_PAUSE_THRESH_SHIFT)); /* * Always use maximum frame size that controller can * support. Otherwise received frames that has longer * frame length than vte(4) MTU would be silently dropped * in controller. This would break path-MTU discovery as * sender wouldn't get any responses from receiver. The * RX buffer size should be multiple of 4. * Note, jumbo frames are silently ignored by controller * and even MAC counters do not detect them. */ CSR_WRITE_2(sc, VTE_MRBSR, VTE_RX_BUF_SIZE_MAX); /* Configure FIFO. */ CSR_WRITE_2(sc, VTE_MBCR, MBCR_FIFO_XFER_LENGTH_16 | MBCR_TX_FIFO_THRESH_64 | MBCR_RX_FIFO_THRESH_16 | MBCR_SDRAM_BUS_REQ_TIMER_DEFAULT); /* * Configure TX/RX MACs. Actual resolved duplex and flow * control configuration is done after detecting a valid * link. Note, we don't generate early interrupt here * as well since FreeBSD does not have interrupt latency * problems like Windows. */ CSR_WRITE_2(sc, VTE_MCR0, MCR0_ACCPT_LONG_PKT); /* * We manually keep track of PHY status changes to * configure resolved duplex and flow control since only * duplex configuration can be automatically reflected to * MCR0. */ CSR_WRITE_2(sc, VTE_MCR1, MCR1_PKT_LENGTH_1537 | MCR1_EXCESS_COL_RETRY_16); /* Initialize RX filter. */ vte_iff(sc); /* Disable TX/RX interrupt moderation control. */ CSR_WRITE_2(sc, VTE_MRICR, 0); CSR_WRITE_2(sc, VTE_MTICR, 0); /* Enable MAC event counter interrupts. */ CSR_WRITE_2(sc, VTE_MECIER, VTE_MECIER_INTRS); /* Clear MAC statistics. */ vte_stats_clear(sc); /* Acknowledge all pending interrupts and clear it. */ CSR_WRITE_2(sc, VTE_MIER, VTE_INTRS); CSR_WRITE_2(sc, VTE_MISR, 0); sc->vte_flags &= ~VTE_FLAG_LINK; /* Switch to the current media. */ vte_mediachange(ifp); timeout_add_sec(&sc->vte_tick_ch, 1); ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); return (0); } void vte_stop(struct vte_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct vte_txdesc *txd; struct vte_rxdesc *rxd; int i; /* * Mark the interface down and cancel the watchdog timer. */ ifp->if_flags &= ~IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); ifp->if_timer = 0; sc->vte_flags &= ~VTE_FLAG_LINK; timeout_del(&sc->vte_tick_ch); vte_stats_update(sc); /* Disable interrupts. */ CSR_WRITE_2(sc, VTE_MIER, 0); CSR_WRITE_2(sc, VTE_MECIER, 0); /* Stop RX/TX MACs. */ vte_stop_mac(sc); /* Clear interrupts. */ CSR_READ_2(sc, VTE_MISR); /* * Free TX/RX mbufs still in the queues. */ for (i = 0; i < VTE_RX_RING_CNT; i++) { rxd = &sc->vte_cdata.vte_rxdesc[i]; if (rxd->rx_m != NULL) { bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); m_freem(rxd->rx_m); rxd->rx_m = NULL; } } for (i = 0; i < VTE_TX_RING_CNT; i++) { txd = &sc->vte_cdata.vte_txdesc[i]; if (txd->tx_m != NULL) { bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); if ((txd->tx_flags & VTE_TXMBUF) == 0) m_freem(txd->tx_m); txd->tx_m = NULL; txd->tx_flags &= ~VTE_TXMBUF; } } /* Free TX mbuf pools used for deep copy. */ for (i = 0; i < VTE_TX_RING_CNT; i++) { if (sc->vte_cdata.vte_txmbufs[i] != NULL) { m_freem(sc->vte_cdata.vte_txmbufs[i]); sc->vte_cdata.vte_txmbufs[i] = NULL; } } } void vte_start_mac(struct vte_softc *sc) { uint16_t mcr; int i; /* Enable RX/TX MACs. */ mcr = CSR_READ_2(sc, VTE_MCR0); if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) != (MCR0_RX_ENB | MCR0_TX_ENB)) { mcr |= MCR0_RX_ENB | MCR0_TX_ENB; CSR_WRITE_2(sc, VTE_MCR0, mcr); for (i = VTE_TIMEOUT; i > 0; i--) { mcr = CSR_READ_2(sc, VTE_MCR0); if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) == (MCR0_RX_ENB | MCR0_TX_ENB)) break; DELAY(10); } if (i == 0) printf("%s: could not enable RX/TX MAC(0x%04x)!\n", sc->sc_dev.dv_xname, mcr); } } void vte_stop_mac(struct vte_softc *sc) { uint16_t mcr; int i; /* Disable RX/TX MACs. */ mcr = CSR_READ_2(sc, VTE_MCR0); if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) != 0) { mcr &= ~(MCR0_RX_ENB | MCR0_TX_ENB); CSR_WRITE_2(sc, VTE_MCR0, mcr); for (i = VTE_TIMEOUT; i > 0; i--) { mcr = CSR_READ_2(sc, VTE_MCR0); if ((mcr & (MCR0_RX_ENB | MCR0_TX_ENB)) == 0) break; DELAY(10); } if (i == 0) printf("%s: could not disable RX/TX MAC(0x%04x)!\n", sc->sc_dev.dv_xname, mcr); } } int vte_init_tx_ring(struct vte_softc *sc) { struct vte_tx_desc *desc; struct vte_txdesc *txd; bus_addr_t addr; int i; sc->vte_cdata.vte_tx_prod = 0; sc->vte_cdata.vte_tx_cons = 0; sc->vte_cdata.vte_tx_cnt = 0; /* Pre-allocate TX mbufs for deep copy. */ for (i = 0; i < VTE_TX_RING_CNT; i++) { MGETHDR(sc->vte_cdata.vte_txmbufs[i], M_DONTWAIT, MT_DATA); if (sc->vte_cdata.vte_txmbufs[i] == NULL) return (ENOBUFS); MCLGET(sc->vte_cdata.vte_txmbufs[i], M_DONTWAIT); if (!(sc->vte_cdata.vte_txmbufs[i]->m_flags & M_EXT)) { m_freem(sc->vte_cdata.vte_txmbufs[i]); sc->vte_cdata.vte_txmbufs[i] = NULL; return (ENOBUFS); } sc->vte_cdata.vte_txmbufs[i]->m_pkthdr.len = MCLBYTES; sc->vte_cdata.vte_txmbufs[i]->m_len = MCLBYTES; } desc = sc->vte_cdata.vte_tx_ring; bzero(desc, VTE_TX_RING_SZ); for (i = 0; i < VTE_TX_RING_CNT; i++) { txd = &sc->vte_cdata.vte_txdesc[i]; txd->tx_m = NULL; if (i != VTE_TX_RING_CNT - 1) addr = sc->vte_cdata.vte_tx_ring_paddr + sizeof(struct vte_tx_desc) * (i + 1); else addr = sc->vte_cdata.vte_tx_ring_paddr + sizeof(struct vte_tx_desc) * 0; desc = &sc->vte_cdata.vte_tx_ring[i]; desc->dtnp = htole32(addr); txd->tx_desc = desc; } bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_tx_ring_map, 0, sc->vte_cdata.vte_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); return (0); } int vte_init_rx_ring(struct vte_softc *sc) { struct vte_rx_desc *desc; struct vte_rxdesc *rxd; bus_addr_t addr; int i; sc->vte_cdata.vte_rx_cons = 0; desc = sc->vte_cdata.vte_rx_ring; bzero(desc, VTE_RX_RING_SZ); for (i = 0; i < VTE_RX_RING_CNT; i++) { rxd = &sc->vte_cdata.vte_rxdesc[i]; rxd->rx_m = NULL; if (i != VTE_RX_RING_CNT - 1) addr = sc->vte_cdata.vte_rx_ring_paddr + sizeof(struct vte_rx_desc) * (i + 1); else addr = sc->vte_cdata.vte_rx_ring_paddr + sizeof(struct vte_rx_desc) * 0; desc = &sc->vte_cdata.vte_rx_ring[i]; desc->drnp = htole32(addr); rxd->rx_desc = desc; if (vte_newbuf(sc, rxd, 1) != 0) return (ENOBUFS); } bus_dmamap_sync(sc->sc_dmat, sc->vte_cdata.vte_rx_ring_map, 0, sc->vte_cdata.vte_rx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); return (0); } void vte_iff(struct vte_softc *sc) { struct arpcom *ac = &sc->sc_arpcom; struct ifnet *ifp = &ac->ac_if; struct ether_multi *enm; struct ether_multistep step; uint8_t *eaddr; uint32_t crc; uint16_t rxfilt_perf[VTE_RXFILT_PERFECT_CNT][3]; uint16_t mchash[4], mcr; int i, nperf; bzero(mchash, sizeof(mchash)); for (i = 0; i < VTE_RXFILT_PERFECT_CNT; i++) { rxfilt_perf[i][0] = 0xFFFF; rxfilt_perf[i][1] = 0xFFFF; rxfilt_perf[i][2] = 0xFFFF; } mcr = CSR_READ_2(sc, VTE_MCR0); mcr &= ~(MCR0_PROMISC | MCR0_BROADCAST_DIS | MCR0_MULTICAST); ifp->if_flags &= ~IFF_ALLMULTI; if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0) { ifp->if_flags |= IFF_ALLMULTI; if (ifp->if_flags & IFF_PROMISC) mcr |= MCR0_PROMISC; else mcr |= MCR0_MULTICAST; mchash[0] = mchash[1] = mchash[2] = mchash[3] = 0xFFFF; } else { nperf = 0; ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { /* * Program the first 3 multicast groups into * the perfect filter. For all others, use the * hash table. */ if (nperf < VTE_RXFILT_PERFECT_CNT) { eaddr = enm->enm_addrlo; rxfilt_perf[nperf][0] = eaddr[1] << 8 | eaddr[0]; rxfilt_perf[nperf][1] = eaddr[3] << 8 | eaddr[2]; rxfilt_perf[nperf][2] = eaddr[5] << 8 | eaddr[4]; nperf++; continue; } crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); mchash[crc >> 30] |= 1 << ((crc >> 26) & 0x0F); ETHER_NEXT_MULTI(step, enm); } if (mchash[0] != 0 || mchash[1] != 0 || mchash[2] != 0 || mchash[3] != 0) mcr |= MCR0_MULTICAST; } /* Program multicast hash table. */ CSR_WRITE_2(sc, VTE_MAR0, mchash[0]); CSR_WRITE_2(sc, VTE_MAR1, mchash[1]); CSR_WRITE_2(sc, VTE_MAR2, mchash[2]); CSR_WRITE_2(sc, VTE_MAR3, mchash[3]); /* Program perfect filter table. */ for (i = 0; i < VTE_RXFILT_PERFECT_CNT; i++) { CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 0, rxfilt_perf[i][0]); CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 2, rxfilt_perf[i][1]); CSR_WRITE_2(sc, VTE_RXFILTER_PEEFECT_BASE + 8 * i + 4, rxfilt_perf[i][2]); } CSR_WRITE_2(sc, VTE_MCR0, mcr); CSR_READ_2(sc, VTE_MCR0); }