/* $OpenBSD: if_vic.c,v 1.48 2007/05/26 17:13:30 jason Exp $ */ /* * Copyright (c) 2006 Reyk Floeter * Copyright (c) 2006 David Gwynne * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* * Driver for the VMware Virtual NIC ("vmxnet") */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #ifdef INET #include #include #endif #include #include #include #define VIC_PCI_BAR PCI_MAPREG_START /* Base Address Register */ #define VIC_MAGIC 0xbabe864f /* Register address offsets */ #define VIC_DATA_ADDR 0x0000 /* Shared data address */ #define VIC_DATA_LENGTH 0x0004 /* Shared data length */ #define VIC_Tx_ADDR 0x0008 /* Tx pointer address */ /* Command register */ #define VIC_CMD 0x000c /* Command register */ #define VIC_CMD_INTR_ACK 0x0001 /* Acknowledge interrupt */ #define VIC_CMD_MCASTFIL 0x0002 /* Multicast address filter */ #define VIC_CMD_MCASTFIL_LENGTH 2 #define VIC_CMD_IFF 0x0004 /* Interface flags */ #define VIC_CMD_IFF_PROMISC 0x0001 /* Promiscous enabled */ #define VIC_CMD_IFF_BROADCAST 0x0002 /* Broadcast enabled */ #define VIC_CMD_IFF_MULTICAST 0x0004 /* Multicast enabled */ #define VIC_CMD_INTR_DISABLE 0x0020 /* Enable interrupts */ #define VIC_CMD_INTR_ENABLE 0x0040 /* Disable interrupts */ #define VIC_CMD_Tx_DONE 0x0100 /* Tx done register */ #define VIC_CMD_NUM_Rx_BUF 0x0200 /* Number of Rx buffers */ #define VIC_CMD_NUM_Tx_BUF 0x0400 /* Number of Tx buffers */ #define VIC_CMD_NUM_PINNED_BUF 0x0800 /* Number of pinned buffers */ #define VIC_CMD_HWCAP 0x1000 /* Capability register */ #define VIC_CMD_HWCAP_SG (1<<0) /* Scatter-gather transmits */ #define VIC_CMD_HWCAP_CSUM_IPv4 (1<<1) /* TCP/UDP cksum */ #define VIC_CMD_HWCAP_CSUM_ALL (1<<3) /* Hardware cksum */ #define VIC_CMD_HWCAP_CSUM \ (VIC_CMD_HWCAP_CSUM_IPv4 | VIC_CMD_HWCAP_CSUM_ALL) #define VIC_CMD_HWCAP_DMA_HIGH (1<<4) /* High DMA mapping */ #define VIC_CMD_HWCAP_TOE (1<<5) /* TCP offload engine */ #define VIC_CMD_HWCAP_TSO (1<<6) /* TCP segmentation offload */ #define VIC_CMD_HWCAP_TSO_SW (1<<7) /* Software TCP segmentation */ #define VIC_CMD_HWCAP_VPROM (1<<8) /* Virtual PROM available */ #define VIC_CMD_HWCAP_VLAN_Tx (1<<9) /* Hardware VLAN MTU Rx */ #define VIC_CMD_HWCAP_VLAN_Rx (1<<10) /* Hardware VLAN MTU Tx */ #define VIC_CMD_HWCAP_VLAN_SW (1<<11) /* Software VLAN MTU */ #define VIC_CMD_HWCAP_VLAN \ (VIC_CMD_HWCAP_VLAN_Tx | VIC_CMD_HWCAP_VLAN_Rx | \ VIC_CMD_HWCAP_VLAN_SW) #define VIC_CMD_HWCAP_BITS \ "\20\01SG\02CSUM4\03CSUM\04HDMA\05TOE\06TSO" \ "\07TSOSW\10VPROM\13VLANTx\14VLANRx\15VLANSW" #define VIC_CMD_FEATURE 0x2000 /* Additional feature register */ #define VIC_CMD_FEATURE_0_Tx (1<<0) #define VIC_CMD_FEATURE_TSO (1<<1) #define VIC_LLADDR 0x0010 /* MAC address register */ #define VIC_VERSION_MINOR 0x0018 /* Minor version register */ #define VIC_VERSION_MAJOR 0x001c /* Major version register */ #define VIC_VERSION_MAJOR_M 0xffff0000 /* Status register */ #define VIC_STATUS 0x0020 #define VIC_STATUS_CONNECTED (1<<0) #define VIC_STATUS_ENABLED (1<<1) #define VIC_TOE_ADDR 0x0024 /* TCP offload address */ /* Virtual PROM address */ #define VIC_VPROM 0x0028 #define VIC_VPROM_LENGTH 6 /* Shared DMA data structures */ struct vic_sg { u_int32_t sg_addr_low; u_int16_t sg_addr_high; u_int16_t sg_length; } __packed; #define VIC_SG_MAX 6 #define VIC_SG_ADDR_MACH 0 #define VIC_SG_ADDR_PHYS 1 #define VIC_SG_ADDR_VIRT 3 struct vic_sgarray { u_int16_t sa_addr_type; u_int16_t sa_length; struct vic_sg sa_sg[VIC_SG_MAX]; } __packed; struct vic_rxdesc { u_int64_t rx_physaddr; u_int32_t rx_buflength; u_int32_t rx_length; u_int16_t rx_owner; u_int16_t rx_flags; u_int32_t rx_priv; } __packed; #define VIC_RX_FLAGS_CSUMHW_OK 0x0001 struct vic_txdesc { u_int16_t tx_flags; u_int16_t tx_owner; u_int32_t tx_priv; u_int32_t tx_tsomss; struct vic_sgarray tx_sa; } __packed; #define VIC_TX_FLAGS_KEEP 0x0001 #define VIC_TX_FLAGS_TXURN 0x0002 #define VIC_TX_FLAGS_CSUMHW 0x0004 #define VIC_TX_FLAGS_TSO 0x0008 #define VIC_TX_FLAGS_PINNED 0x0010 #define VIC_TX_FLAGS_QRETRY 0x1000 struct vic_stats { u_int32_t vs_tx_count; u_int32_t vs_tx_packets; u_int32_t vs_tx_0copy; u_int32_t vs_tx_copy; u_int32_t vs_tx_maxpending; u_int32_t vs_tx_stopped; u_int32_t vs_tx_overrun; u_int32_t vs_intr; u_int32_t vs_rx_packets; u_int32_t vs_rx_underrun; } __packed; struct vic_data { u_int32_t vd_magic; u_int32_t vd_rx_length; u_int32_t vd_rx_nextidx; u_int32_t vd_rx_length2; u_int32_t vd_rx_nextidx2; u_int32_t vd_irq; u_int32_t vd_iff; u_int32_t vd_mcastfil[VIC_CMD_MCASTFIL_LENGTH]; u_int32_t vd_reserved1[1]; u_int32_t vd_tx_length; u_int32_t vd_tx_curidx; u_int32_t vd_tx_nextidx; u_int32_t vd_tx_stopped; u_int32_t vd_tx_triggerlvl; u_int32_t vd_tx_queued; u_int32_t vd_tx_minlength; u_int32_t vd_reserved2[6]; u_int32_t vd_rx_saved_nextidx; u_int32_t vd_rx_saved_nextidx2; u_int32_t vd_tx_saved_nextidx; u_int32_t vd_length; u_int32_t vd_rx_offset; u_int32_t vd_rx_offset2; u_int32_t vd_tx_offset; u_int32_t vd_debug; u_int32_t vd_tx_physaddr; u_int32_t vd_tx_physaddr_length; u_int32_t vd_tx_maxlength; struct vic_stats vd_stats; } __packed; #define VIC_OWNER_DRIVER 0 #define VIC_OWNER_DRIVER_PEND 1 #define VIC_OWNER_NIC 2 #define VIC_OWNER_NIC_PEND 3 #define VIC_JUMBO_FRAMELEN 9018 #define VIC_JUMBO_MTU (VIC_JUMBO_FRAMELEN - ETHER_HDR_LEN - ETHER_CRC_LEN) #define VIC_NBUF 100 #define VIC_NBUF_MAX 128 #define VIC_MAX_SCATTER 1 /* 8? */ #define VIC_QUEUE_SIZE VIC_NBUF_MAX #define VIC_QUEUE2_SIZE 1 #define VIC_INC(_x, _y) (_x) = ((_x) + 1) % (_y) #define VIC_TX_TIMEOUT 5 #define VIC_MIN_FRAMELEN (ETHER_MIN_LEN - ETHER_CRC_LEN) #define VIC_TXURN_WARN(_sc) ((_sc)->sc_txpending >= ((_sc)->sc_ntxbuf - 5)) #define VIC_TXURN(_sc) ((_sc)->sc_txpending >= (_sc)->sc_ntxbuf) struct vic_rxbuf { bus_dmamap_t rxb_dmamap; struct mbuf *rxb_m; }; struct vic_txbuf { bus_dmamap_t txb_dmamap; struct mbuf *txb_m; }; struct vic_softc { struct device sc_dev; pci_chipset_tag_t sc_pc; pcitag_t sc_tag; bus_space_tag_t sc_iot; bus_space_handle_t sc_ioh; bus_size_t sc_ios; bus_dma_tag_t sc_dmat; void *sc_ih; struct timeout sc_tick; struct arpcom sc_ac; struct ifmedia sc_media; u_int32_t sc_nrxbuf; u_int32_t sc_ntxbuf; u_int32_t sc_cap; u_int32_t sc_feature; u_int8_t sc_lladdr[ETHER_ADDR_LEN]; bus_dmamap_t sc_dma_map; bus_dma_segment_t sc_dma_seg; size_t sc_dma_size; caddr_t sc_dma_kva; #define VIC_DMA_DVA(_sc) ((_sc)->sc_dma_map->dm_segs[0].ds_addr) #define VIC_DMA_KVA(_sc) ((void *)(_sc)->sc_dma_kva) struct vic_data *sc_data; struct vic_rxbuf *sc_rxbuf; struct vic_rxdesc *sc_rxq; struct vic_rxdesc *sc_rxq2; struct vic_txbuf *sc_txbuf; struct vic_txdesc *sc_txq; volatile u_int sc_txpending; }; struct cfdriver vic_cd = { 0, "vic", DV_IFNET }; int vic_match(struct device *, void *, void *); void vic_attach(struct device *, struct device *, void *); struct cfattach vic_ca = { sizeof(struct vic_softc), vic_match, vic_attach }; int vic_intr(void *); void vic_shutdown(void *); int vic_map_pci(struct vic_softc *, struct pci_attach_args *); int vic_query(struct vic_softc *); int vic_alloc_data(struct vic_softc *); int vic_init_data(struct vic_softc *sc); int vic_uninit_data(struct vic_softc *sc); u_int32_t vic_read(struct vic_softc *, bus_size_t); void vic_write(struct vic_softc *, bus_size_t, u_int32_t); u_int32_t vic_read_cmd(struct vic_softc *, u_int32_t); int vic_alloc_dmamem(struct vic_softc *); void vic_free_dmamem(struct vic_softc *); void vic_link_state(struct vic_softc *); void vic_rx_proc(struct vic_softc *); void vic_tx_proc(struct vic_softc *); void vic_iff(struct vic_softc *); void vic_getlladdr(struct vic_softc *); void vic_setlladdr(struct vic_softc *); int vic_media_change(struct ifnet *); void vic_media_status(struct ifnet *, struct ifmediareq *); void vic_start(struct ifnet *); int vic_load_txb(struct vic_softc *, struct vic_txbuf *, struct mbuf *); void vic_watchdog(struct ifnet *); int vic_ioctl(struct ifnet *, u_long, caddr_t); void vic_init(struct ifnet *); void vic_stop(struct ifnet *); void vic_tick(void *); #define DEVNAME(_s) ((_s)->sc_dev.dv_xname) struct mbuf *vic_alloc_mbuf(struct vic_softc *, bus_dmamap_t); const struct pci_matchid vic_devices[] = { { PCI_VENDOR_VMWARE, PCI_PRODUCT_VMWARE_NET } }; int vic_match(struct device *parent, void *match, void *aux) { return (pci_matchbyid((struct pci_attach_args *)aux, vic_devices, sizeof(vic_devices)/sizeof(vic_devices[0]))); } void vic_attach(struct device *parent, struct device *self, void *aux) { struct vic_softc *sc = (struct vic_softc *)self; struct pci_attach_args *pa = aux; struct ifnet *ifp; if (vic_map_pci(sc, pa) != 0) { /* error printed by vic_map_pci */ return; } if (vic_query(sc) != 0) { /* error printed by vic_query */ return; } if (vic_alloc_data(sc) != 0) { /* error printed by vic_alloc */ return; } timeout_set(&sc->sc_tick, vic_tick, sc); bcopy(sc->sc_lladdr, sc->sc_ac.ac_enaddr, ETHER_ADDR_LEN); ifp = &sc->sc_ac.ac_if; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = vic_ioctl; ifp->if_start = vic_start; ifp->if_watchdog = vic_watchdog; ifp->if_hardmtu = VIC_JUMBO_MTU; strlcpy(ifp->if_xname, DEVNAME(sc), IFNAMSIZ); IFQ_SET_MAXLEN(&ifp->if_snd, sc->sc_ntxbuf - 1); IFQ_SET_READY(&ifp->if_snd); ifp->if_capabilities = IFCAP_VLAN_MTU; #if 0 /* XXX interface capabilities */ if (sc->sc_cap & VIC_CMD_HWCAP_VLAN) ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; if (sc->sc_cap & VIC_CMD_HWCAP_CSUM) ifp->if_capabilities |= IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4; #endif ifmedia_init(&sc->sc_media, 0, vic_media_change, vic_media_status); ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); if_attach(ifp); ether_ifattach(ifp); return; } int vic_map_pci(struct vic_softc *sc, struct pci_attach_args *pa) { pcireg_t memtype; pci_intr_handle_t ih; const char *intrstr; sc->sc_pc = pa->pa_pc; sc->sc_tag = pa->pa_tag; sc->sc_dmat = pa->pa_dmat; memtype = pci_mapreg_type(sc->sc_pc, sc->sc_tag, VIC_PCI_BAR); if (pci_mapreg_map(pa, VIC_PCI_BAR, memtype, 0, &sc->sc_iot, &sc->sc_ioh, NULL, &sc->sc_ios, 0) != 0) { printf(": unable to map system interface register\n"); return (1); } if (pci_intr_map(pa, &ih) != 0) { printf(": unable to map interrupt\n"); goto unmap; } intrstr = pci_intr_string(pa->pa_pc, ih); sc->sc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_NET, vic_intr, sc, DEVNAME(sc)); if (sc->sc_ih == NULL) { printf(": unable to map interrupt%s%s\n", intrstr == NULL ? "" : " at ", intrstr == NULL ? "" : intrstr); goto unmap; } printf(": %s\n", intrstr); return (0); unmap: bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios); sc->sc_ios = 0; return (1); } int vic_query(struct vic_softc *sc) { u_int32_t major, minor; major = vic_read(sc, VIC_VERSION_MAJOR); minor = vic_read(sc, VIC_VERSION_MINOR); /* Check for a supported version */ if ((major & VIC_VERSION_MAJOR_M) != (VIC_MAGIC & VIC_VERSION_MAJOR_M)) { printf("%s: magic mismatch\n", DEVNAME(sc)); return (1); } if (VIC_MAGIC > major || VIC_MAGIC < minor) { printf("%s: unsupported version (%X)\n", DEVNAME(sc), major & ~VIC_VERSION_MAJOR_M); return (1); } sc->sc_nrxbuf = vic_read_cmd(sc, VIC_CMD_NUM_Rx_BUF); sc->sc_ntxbuf = vic_read_cmd(sc, VIC_CMD_NUM_Tx_BUF); sc->sc_feature = vic_read_cmd(sc, VIC_CMD_FEATURE); sc->sc_cap = vic_read_cmd(sc, VIC_CMD_HWCAP); vic_getlladdr(sc); printf("%s: VMXnet %04X, address %s\n", DEVNAME(sc), major & ~VIC_VERSION_MAJOR_M, ether_sprintf(sc->sc_lladdr)); #ifdef VIC_DEBUG printf("%s: feature 0x%8x, cap 0x%8x, rx/txbuf %d/%d\n", DEVNAME(sc), sc->sc_feature, sc->sc_cap, sc->sc_nrxbuf, sc->sc_ntxbuf); #endif if (sc->sc_nrxbuf > VIC_NBUF_MAX || sc->sc_nrxbuf == 0) sc->sc_nrxbuf = VIC_NBUF; if (sc->sc_ntxbuf > VIC_NBUF_MAX || sc->sc_ntxbuf == 0) sc->sc_ntxbuf = VIC_NBUF; return (0); } int vic_alloc_data(struct vic_softc *sc) { u_int8_t *kva; u_int offset; struct vic_rxdesc *rxd; int i; sc->sc_rxbuf = malloc(sizeof(struct vic_rxbuf) * sc->sc_nrxbuf, M_NOWAIT, M_DEVBUF); if (sc->sc_rxbuf == NULL) { printf("%s: unable to allocate rxbuf\n", DEVNAME(sc)); goto err; } sc->sc_txbuf = malloc(sizeof(struct vic_txbuf) * sc->sc_ntxbuf, M_NOWAIT, M_DEVBUF); if (sc->sc_txbuf == NULL) { printf("%s: unable to allocate txbuf\n", DEVNAME(sc)); goto freerx; } sc->sc_dma_size = sizeof(struct vic_data) + (sc->sc_nrxbuf + VIC_QUEUE2_SIZE) * sizeof(struct vic_rxdesc) + sc->sc_ntxbuf * sizeof(struct vic_txdesc); if (vic_alloc_dmamem(sc) != 0) { printf("%s: unable to allocate dma region\n", DEVNAME(sc)); goto freetx; } kva = VIC_DMA_KVA(sc); /* set up basic vic data */ sc->sc_data = VIC_DMA_KVA(sc); sc->sc_data->vd_magic = VIC_MAGIC; sc->sc_data->vd_length = sc->sc_dma_size; offset = sizeof(struct vic_data); /* set up the rx ring */ sc->sc_rxq = (struct vic_rxdesc *)&kva[offset]; sc->sc_data->vd_rx_offset = offset; sc->sc_data->vd_rx_length = sc->sc_nrxbuf; offset += sizeof(struct vic_rxdesc) * sc->sc_nrxbuf; /* set up the dummy rx ring 2 with an unusable entry */ sc->sc_rxq2 = (struct vic_rxdesc *)&kva[offset]; sc->sc_data->vd_rx_offset2 = offset; sc->sc_data->vd_rx_length2 = VIC_QUEUE2_SIZE; for (i = 0; i < VIC_QUEUE2_SIZE; i++) { rxd = &sc->sc_rxq2[i]; rxd->rx_physaddr = 0; rxd->rx_buflength = 0; rxd->rx_length = 0; rxd->rx_owner = VIC_OWNER_DRIVER; offset += sizeof(struct vic_rxdesc); } /* set up the tx ring */ sc->sc_txq = (struct vic_txdesc *)&kva[offset]; sc->sc_data->vd_tx_offset = offset; sc->sc_data->vd_tx_length = sc->sc_ntxbuf; return (0); freetx: free(sc->sc_txbuf, M_DEVBUF); freerx: free(sc->sc_rxbuf, M_DEVBUF); err: return (1); } int vic_init_data(struct vic_softc *sc) { struct vic_rxbuf *rxb; struct vic_rxdesc *rxd; struct vic_txbuf *txb; int i; for (i = 0; i < sc->sc_nrxbuf; i++) { rxb = &sc->sc_rxbuf[i]; rxd = &sc->sc_rxq[i]; if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &rxb->rxb_dmamap) != 0) { printf("%s: unable to create dmamap for rxb %d\n", DEVNAME(sc), i); goto freerxbs; } rxb->rxb_m = vic_alloc_mbuf(sc, rxb->rxb_dmamap); if (rxb->rxb_m == NULL) { /* error already printed */ bus_dmamap_destroy(sc->sc_dmat, rxb->rxb_dmamap); goto freerxbs; } bus_dmamap_sync(sc->sc_dmat, rxb->rxb_dmamap, 0, rxb->rxb_m->m_pkthdr.len, BUS_DMASYNC_PREREAD); rxd->rx_physaddr = rxb->rxb_dmamap->dm_segs[0].ds_addr; rxd->rx_buflength = rxb->rxb_m->m_pkthdr.len; /* XXX? */ rxd->rx_length = 0; rxd->rx_owner = VIC_OWNER_NIC; } for (i = 0; i < sc->sc_ntxbuf; i++) { txb = &sc->sc_txbuf[i]; if (bus_dmamap_create(sc->sc_dmat, MCLBYTES, (sc->sc_cap & VIC_CMD_HWCAP_SG) ? VIC_SG_MAX : 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &txb->txb_dmamap) != 0) { printf("%s: unable to create dmamap for tx %d\n", DEVNAME(sc), i); goto freetxbs; } txb->txb_m = NULL; } return (0); freetxbs: while (i--) { txb = &sc->sc_txbuf[i]; bus_dmamap_destroy(sc->sc_dmat, txb->txb_dmamap); } i = sc->sc_nrxbuf; freerxbs: while (i--) { rxb = &sc->sc_rxbuf[i]; bus_dmamap_sync(sc->sc_dmat, rxb->rxb_dmamap, 0, rxb->rxb_m->m_pkthdr.len, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxb->rxb_dmamap); bus_dmamap_destroy(sc->sc_dmat, rxb->rxb_dmamap); } return (1); } int vic_uninit_data(struct vic_softc *sc) { struct vic_rxbuf *rxb; struct vic_rxdesc *rxd; struct vic_txbuf *txb; int i; for (i = 0; i < sc->sc_nrxbuf; i++) { rxb = &sc->sc_rxbuf[i]; rxd = &sc->sc_rxq[i]; bus_dmamap_sync(sc->sc_dmat, rxb->rxb_dmamap, 0, rxb->rxb_m->m_pkthdr.len, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxb->rxb_dmamap); bus_dmamap_destroy(sc->sc_dmat, rxb->rxb_dmamap); m_freem(rxb->rxb_m); rxb->rxb_m = NULL; } for (i = 0; i < sc->sc_ntxbuf; i++) { txb = &sc->sc_txbuf[i]; bus_dmamap_destroy(sc->sc_dmat, txb->txb_dmamap); } return (0); } void vic_link_state(struct vic_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; u_int32_t status; int link_state = LINK_STATE_DOWN; status = vic_read(sc, VIC_STATUS); if (status & VIC_STATUS_CONNECTED) link_state = LINK_STATE_FULL_DUPLEX; if (ifp->if_link_state != link_state) { ifp->if_link_state = link_state; if_link_state_change(ifp); } } void vic_shutdown(void *self) { struct vic_softc *sc = (struct vic_softc *)self; vic_stop(&sc->sc_ac.ac_if); } int vic_intr(void *arg) { struct vic_softc *sc = (struct vic_softc *)arg; vic_rx_proc(sc); vic_tx_proc(sc); vic_write(sc, VIC_CMD, VIC_CMD_INTR_ACK); return (1); } void vic_rx_proc(struct vic_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; struct vic_rxdesc *rxd; struct vic_rxbuf *rxb; struct mbuf *m; int len, idx; if ((ifp->if_flags & IFF_RUNNING) == 0) return; bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); for (;;) { idx = sc->sc_data->vd_rx_nextidx; if (idx >= sc->sc_data->vd_rx_length) { ifp->if_ierrors++; if (ifp->if_flags & IFF_DEBUG) printf("%s: receive index error\n", sc->sc_dev.dv_xname); break; } rxd = &sc->sc_rxq[idx]; if (rxd->rx_owner != VIC_OWNER_DRIVER) break; rxb = &sc->sc_rxbuf[idx]; len = rxd->rx_length; if (len < VIC_MIN_FRAMELEN) { ifp->if_iqdrops++; goto nextp; } if (rxb->rxb_m == NULL) { ifp->if_ierrors++; printf("%s: rxb %d has no mbuf\n", DEVNAME(sc), idx); break; } bus_dmamap_sync(sc->sc_dmat, rxb->rxb_dmamap, 0, rxb->rxb_m->m_pkthdr.len, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxb->rxb_dmamap); m = rxb->rxb_m; rxb->rxb_m = NULL; m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = len; /* Get new mbuf for the Rx queue */ rxb->rxb_m = vic_alloc_mbuf(sc, rxb->rxb_dmamap); if (rxb->rxb_m == NULL) { ifp->if_ierrors++; printf("%s: mbuf alloc failed\n", DEVNAME(sc)); break; } bus_dmamap_sync(sc->sc_dmat, rxb->rxb_dmamap, 0, rxb->rxb_m->m_pkthdr.len, BUS_DMASYNC_PREREAD); rxd->rx_physaddr = rxb->rxb_dmamap->dm_segs[0].ds_addr; rxd->rx_buflength = rxb->rxb_m->m_pkthdr.len; rxd->rx_length = 0; rxd->rx_owner = VIC_OWNER_DRIVER; ifp->if_ipackets++; #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN); #endif ether_input_mbuf(ifp, m); nextp: rxd->rx_owner = VIC_OWNER_NIC; VIC_INC(sc->sc_data->vd_rx_nextidx, sc->sc_data->vd_rx_length); } bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } void vic_tx_proc(struct vic_softc *sc) { struct ifnet *ifp = &sc->sc_ac.ac_if; struct vic_txdesc *txd; struct vic_txbuf *txb; int idx; bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); while (sc->sc_txpending > 0) { idx = sc->sc_data->vd_tx_curidx; if (idx >= sc->sc_data->vd_tx_length) { ifp->if_oerrors++; break; } txd = &sc->sc_txq[idx]; if (txd->tx_owner != VIC_OWNER_DRIVER) break; txb = &sc->sc_txbuf[idx]; if (txb->txb_m == NULL) { printf("%s: tx ring is corrupt\n", DEVNAME(sc)); ifp->if_oerrors++; break; } bus_dmamap_sync(sc->sc_dmat, txb->txb_dmamap, 0, txb->txb_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, txb->txb_dmamap); m_freem(txb->txb_m); txb->txb_m = NULL; ifp->if_flags &= ~IFF_OACTIVE; sc->sc_txpending--; sc->sc_data->vd_tx_stopped = 0; VIC_INC(sc->sc_data->vd_tx_curidx, sc->sc_data->vd_tx_length); } bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); vic_start(ifp); } void vic_iff(struct vic_softc *sc) { struct arpcom *ac = &sc->sc_ac; struct ifnet *ifp = &sc->sc_ac.ac_if; struct ether_multi *enm; struct ether_multistep step; u_int32_t crc; u_int flags = 0; bzero(&sc->sc_data->vd_mcastfil, sizeof(sc->sc_data->vd_mcastfil)); ifp->if_flags &= ~IFF_ALLMULTI; if ((ifp->if_flags & IFF_RUNNING) == 0) goto domulti; if (ifp->if_flags & IFF_PROMISC) goto allmulti; ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { if (bcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) goto allmulti; crc = ether_crc32_le(enm->enm_addrlo, ETHER_ADDR_LEN); crc >>= 26; sc->sc_data->vd_mcastfil[crc >> 4] |= htole16(1 << (crc & 0xf)); ETHER_NEXT_MULTI(step, enm); } goto domulti; allmulti: ifp->if_flags |= IFF_ALLMULTI; memset(&sc->sc_data->vd_mcastfil, 0xff, sizeof(sc->sc_data->vd_mcastfil)); domulti: vic_write(sc, VIC_CMD, VIC_CMD_MCASTFIL); if (ifp->if_flags & IFF_RUNNING) { flags = (ifp->if_flags & IFF_PROMISC) ? VIC_CMD_IFF_PROMISC : (VIC_CMD_IFF_BROADCAST | VIC_CMD_IFF_MULTICAST); } sc->sc_data->vd_iff = flags; vic_write(sc, VIC_CMD, VIC_CMD_IFF); } void vic_getlladdr(struct vic_softc *sc) { u_int32_t reg; /* Get MAC address */ reg = (sc->sc_cap & VIC_CMD_HWCAP_VPROM) ? VIC_VPROM : VIC_LLADDR; bus_space_barrier(sc->sc_iot, sc->sc_ioh, reg, ETHER_ADDR_LEN, BUS_SPACE_BARRIER_READ); bus_space_read_region_1(sc->sc_iot, sc->sc_ioh, reg, sc->sc_lladdr, ETHER_ADDR_LEN); /* Update the MAC address register */ if (reg == VIC_VPROM) vic_setlladdr(sc); } void vic_setlladdr(struct vic_softc *sc) { bus_space_write_region_1(sc->sc_iot, sc->sc_ioh, VIC_LLADDR, sc->sc_lladdr, ETHER_ADDR_LEN); bus_space_barrier(sc->sc_iot, sc->sc_ioh, VIC_LLADDR, ETHER_ADDR_LEN, BUS_SPACE_BARRIER_WRITE); } int vic_media_change(struct ifnet *ifp) { /* Ignore */ return (0); } void vic_media_status(struct ifnet *ifp, struct ifmediareq *imr) { struct vic_softc *sc = (struct vic_softc *)ifp->if_softc; imr->ifm_active = IFM_ETHER | IFM_AUTO; imr->ifm_status = IFM_AVALID; vic_link_state(sc); if (LINK_STATE_IS_UP(ifp->if_link_state) && ifp->if_flags & IFF_UP) imr->ifm_status |= IFM_ACTIVE; } void vic_start(struct ifnet *ifp) { struct vic_softc *sc; struct mbuf *m; struct vic_txbuf *txb; struct vic_txdesc *txd; struct vic_sg *sge; bus_dmamap_t dmap; int i, idx; int tx = 0; if (!(ifp->if_flags & IFF_RUNNING)) return; if (ifp->if_flags & IFF_OACTIVE) return; if (IFQ_IS_EMPTY(&ifp->if_snd)) return; sc = (struct vic_softc *)ifp->if_softc; bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); for (;;) { if (VIC_TXURN(sc)) { ifp->if_flags |= IFF_OACTIVE; break; } IFQ_POLL(&ifp->if_snd, m); if (m == NULL) break; idx = sc->sc_data->vd_tx_nextidx; if (idx >= sc->sc_data->vd_tx_length) { printf("%s: tx idx is corrupt\n", DEVNAME(sc)); ifp->if_oerrors++; break; } txd = &sc->sc_txq[idx]; txb = &sc->sc_txbuf[idx]; if (txb->txb_m != NULL) { printf("%s: tx ring is corrupt\n", DEVNAME(sc)); sc->sc_data->vd_tx_stopped = 1; ifp->if_oerrors++; break; } /* * we're committed to sending it now. if we cant map it into * dma memory then we drop it. */ IFQ_DEQUEUE(&ifp->if_snd, m); if (vic_load_txb(sc, txb, m) != 0) { m_freem(m); ifp->if_oerrors++; /* continue? */ break; } #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, txb->txb_m, BPF_DIRECTION_OUT); #endif dmap = txb->txb_dmamap; txd->tx_flags = VIC_TX_FLAGS_KEEP; txd->tx_owner = VIC_OWNER_NIC; txd->tx_sa.sa_addr_type = VIC_SG_ADDR_PHYS; txd->tx_sa.sa_length = dmap->dm_nsegs; for (i = 0; i < dmap->dm_nsegs; i++) { sge = &txd->tx_sa.sa_sg[i]; sge->sg_length = dmap->dm_segs[i].ds_len; sge->sg_addr_low = dmap->dm_segs[i].ds_addr; } if (VIC_TXURN_WARN(sc)) { txd->tx_flags |= VIC_TX_FLAGS_TXURN; } bus_dmamap_sync(sc->sc_dmat, dmap, 0, dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); ifp->if_opackets++; sc->sc_txpending++; VIC_INC(sc->sc_data->vd_tx_nextidx, sc->sc_data->vd_tx_length); tx = 1; } bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); if (tx) vic_read(sc, VIC_Tx_ADDR); } int vic_load_txb(struct vic_softc *sc, struct vic_txbuf *txb, struct mbuf *m) { bus_dmamap_t dmap = txb->txb_dmamap; struct mbuf *m0 = NULL; int error; error = bus_dmamap_load_mbuf(sc->sc_dmat, dmap, m, BUS_DMA_NOWAIT); switch (error) { case 0: txb->txb_m = m; break; case EFBIG: /* mbuf chain is too fragmented */ MGETHDR(m0, M_DONTWAIT, MT_DATA); if (m0 == NULL) return (ENOBUFS); if (m->m_pkthdr.len > MHLEN) { MCLGET(m0, M_DONTWAIT); if (!(m0->m_flags & M_EXT)) { m_freem(m0); return (ENOBUFS); } } m_copydata(m, 0, m->m_pkthdr.len, mtod(m0, caddr_t)); m0->m_pkthdr.len = m0->m_len = m->m_pkthdr.len; error = bus_dmamap_load_mbuf(sc->sc_dmat, dmap, m0, BUS_DMA_NOWAIT); if (error != 0) { m_freem(m0); printf("%s: tx dmamap load error %d\n", DEVNAME(sc), error); return (ENOBUFS); } m_freem(m); txb->txb_m = m0; break; default: printf("%s: tx dmamap load error %d\n", DEVNAME(sc), error); return (ENOBUFS); } return (0); } void vic_watchdog(struct ifnet *ifp) { #if 0 struct vic_softc *sc = (struct vic_softc *)ifp->if_softc; if (sc->sc_txpending && sc->sc_txtimeout > 0) { if (--sc->sc_txtimeout == 0) { printf("%s: device timeout\n", sc->sc_dev.dv_xname); ifp->if_flags &= ~IFF_RUNNING; vic_init(ifp); ifp->if_oerrors++; return; } } if (!IFQ_IS_EMPTY(&ifp->if_snd)) vic_start(ifp); #endif } int vic_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct vic_softc *sc = (struct vic_softc *)ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; struct ifaddr *ifa; int s, error = 0; s = splnet(); if ((error = ether_ioctl(ifp, &sc->sc_ac, cmd, data)) > 0) { splx(s); return (error); } switch (cmd) { case SIOCSIFADDR: ifa = (struct ifaddr *)data; ifp->if_flags |= IFF_UP; #ifdef INET if (ifa->ifa_addr->sa_family == AF_INET) arp_ifinit(&sc->sc_ac, ifa); #endif /* FALLTHROUGH */ case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) vic_iff(sc); else vic_init(ifp); } else { if (ifp->if_flags & IFF_RUNNING) vic_stop(ifp); } break; case SIOCSIFMTU: if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ifp->if_hardmtu) error = EINVAL; else if (ifp->if_mtu != ifr->ifr_mtu) ifp->if_mtu = ifr->ifr_mtu; break; case SIOCADDMULTI: case SIOCDELMULTI: ifr = (struct ifreq *)data; error = (cmd == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->sc_ac) : ether_delmulti(ifr, &sc->sc_ac); if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) vic_iff(sc); error = 0; } break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); break; default: error = ENOTTY; break; } if (error == ENETRESET) { if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) vic_iff(ifp->if_softc); error = 0; } splx(s); return (error); } void vic_init(struct ifnet *ifp) { struct vic_softc *sc = (struct vic_softc *)ifp->if_softc; int s; if (vic_init_data(sc) != 0) return; sc->sc_data->vd_tx_curidx = 0; sc->sc_data->vd_tx_nextidx = 0; sc->sc_data->vd_tx_stopped = sc->sc_data->vd_tx_queued = 0; sc->sc_data->vd_rx_nextidx = 0; sc->sc_data->vd_rx_nextidx2 = 0; sc->sc_data->vd_rx_saved_nextidx = 0; sc->sc_data->vd_rx_saved_nextidx2 = 0; sc->sc_data->vd_tx_saved_nextidx = 0; bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); s = splnet(); vic_write(sc, VIC_DATA_ADDR, VIC_DMA_DVA(sc)); vic_write(sc, VIC_DATA_LENGTH, sc->sc_dma_size); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; vic_iff(sc); vic_write(sc, VIC_CMD, VIC_CMD_INTR_ENABLE); splx(s); timeout_add(&sc->sc_tick, hz); } void vic_stop(struct ifnet *ifp) { struct vic_softc *sc = (struct vic_softc *)ifp->if_softc; int s; s = splnet(); timeout_del(&sc->sc_tick); ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); bus_dmamap_sync(sc->sc_dmat, sc->sc_dma_map, 0, sc->sc_dma_size, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); /* XXX wait for tx to complete */ while (sc->sc_txpending > 0) { splx(s); delay(1000); s = splnet(); } sc->sc_data->vd_tx_stopped = 1; vic_write(sc, VIC_CMD, VIC_CMD_INTR_DISABLE); vic_iff(sc); vic_write(sc, VIC_DATA_ADDR, 0); vic_uninit_data(sc); splx(s); } struct mbuf * vic_alloc_mbuf(struct vic_softc *sc, bus_dmamap_t map) { struct mbuf *m = NULL; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) return (NULL); MCLGET(m, M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { m_freem(m); return (NULL); } m->m_len = m->m_pkthdr.len = MCLBYTES; if (bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_NOWAIT) != 0) { printf("%s: could not load mbuf DMA map", DEVNAME(sc)); m_freem(m); return (NULL); } return (m); } void vic_tick(void *arg) { struct vic_softc *sc = (struct vic_softc *)arg; vic_link_state(sc); timeout_add(&sc->sc_tick, hz); } u_int32_t vic_read(struct vic_softc *sc, bus_size_t r) { bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4, BUS_SPACE_BARRIER_READ); return (bus_space_read_4(sc->sc_iot, sc->sc_ioh, r)); } void vic_write(struct vic_softc *sc, bus_size_t r, u_int32_t v) { bus_space_write_4(sc->sc_iot, sc->sc_ioh, r, v); bus_space_barrier(sc->sc_iot, sc->sc_ioh, r, 4, BUS_SPACE_BARRIER_WRITE); } u_int32_t vic_read_cmd(struct vic_softc *sc, u_int32_t cmd) { vic_write(sc, VIC_CMD, cmd); return (vic_read(sc, VIC_CMD)); } int vic_alloc_dmamem(struct vic_softc *sc) { int nsegs; if (bus_dmamap_create(sc->sc_dmat, sc->sc_dma_size, 1, sc->sc_dma_size, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, &sc->sc_dma_map) != 0) goto err; if (bus_dmamem_alloc(sc->sc_dmat, sc->sc_dma_size, 16, 0, &sc->sc_dma_seg, 1, &nsegs, BUS_DMA_NOWAIT) != 0) goto destroy; if (bus_dmamem_map(sc->sc_dmat, &sc->sc_dma_seg, nsegs, sc->sc_dma_size, &sc->sc_dma_kva, BUS_DMA_NOWAIT) != 0) goto free; if (bus_dmamap_load(sc->sc_dmat, sc->sc_dma_map, sc->sc_dma_kva, sc->sc_dma_size, NULL, BUS_DMA_NOWAIT) != 0) goto unmap; bzero(sc->sc_dma_kva, sc->sc_dma_size); return (0); unmap: bus_dmamem_unmap(sc->sc_dmat, sc->sc_dma_kva, sc->sc_dma_size); free: bus_dmamem_free(sc->sc_dmat, &sc->sc_dma_seg, 1); destroy: bus_dmamap_destroy(sc->sc_dmat, sc->sc_dma_map); err: return (1); } void vic_free_dmamem(struct vic_softc *sc) { bus_dmamap_unload(sc->sc_dmat, sc->sc_dma_map); bus_dmamem_unmap(sc->sc_dmat, sc->sc_dma_kva, sc->sc_dma_size); bus_dmamem_free(sc->sc_dmat, &sc->sc_dma_seg, 1); bus_dmamap_destroy(sc->sc_dmat, sc->sc_dma_map); }