diff options
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/if_ix.c | 627 | ||||
| -rw-r--r-- | sys/dev/pci/if_ix.h | 12 |
2 files changed, 295 insertions, 344 deletions
diff --git a/sys/dev/pci/if_ix.c b/sys/dev/pci/if_ix.c index ca9129b5637..21a200c27ad 100644 --- a/sys/dev/pci/if_ix.c +++ b/sys/dev/pci/if_ix.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_ix.c,v 1.21 2009/06/28 22:05:36 jsg Exp $ */ +/* $OpenBSD: if_ix.c,v 1.22 2009/06/28 22:20:20 jsg Exp $ */ /****************************************************************************** @@ -85,7 +85,7 @@ void ixgbe_setup_interface(struct ix_softc *); int ixgbe_allocate_transmit_buffers(struct tx_ring *); int ixgbe_setup_transmit_structures(struct ix_softc *); -void ixgbe_setup_transmit_ring(struct tx_ring *); +int ixgbe_setup_transmit_ring(struct tx_ring *); void ixgbe_initialize_transmit_units(struct ix_softc *); void ixgbe_free_transmit_structures(struct ix_softc *); void ixgbe_free_transmit_buffers(struct tx_ring *); @@ -96,6 +96,7 @@ int ixgbe_setup_receive_ring(struct rx_ring *); void ixgbe_initialize_receive_units(struct ix_softc *); void ixgbe_free_receive_structures(struct ix_softc *); void ixgbe_free_receive_buffers(struct rx_ring *); +int ixgbe_rxfill(struct rx_ring *); void ixgbe_enable_intr(struct ix_softc *); void ixgbe_disable_intr(struct ix_softc *); @@ -110,7 +111,7 @@ void ixgbe_set_multi(struct ix_softc *); void ixgbe_print_hw_stats(struct ix_softc *); #endif void ixgbe_update_link_status(struct ix_softc *); -int ixgbe_get_buf(struct rx_ring *, int, struct mbuf *); +int ixgbe_get_buf(struct rx_ring *, int); int ixgbe_encap(struct tx_ring *, struct mbuf *); void ixgbe_enable_hw_vlans(struct ix_softc * sc); int ixgbe_dma_malloc(struct ix_softc *, bus_size_t, @@ -698,7 +699,7 @@ ixgbe_legacy_irq(void *arg) struct tx_ring *txr = sc->tx_rings; struct rx_ring *rxr = sc->rx_rings; struct ixgbe_hw *hw = &sc->hw; - int claimed = 0; + int claimed = 0, refill = 0; for (;;) { reg_eicr = IXGBE_READ_REG(&sc->hw, IXGBE_EICR); @@ -706,10 +707,12 @@ ixgbe_legacy_irq(void *arg) break; claimed = 1; + refill = 0; if (ifp->if_flags & IFF_RUNNING) { ixgbe_rxeof(rxr, -1); ixgbe_txeof(txr); + refill = 1; } /* Check for fan failure */ @@ -727,6 +730,12 @@ ixgbe_legacy_irq(void *arg) ixgbe_update_link_status(sc); timeout_add_sec(&sc->timer, 1); } + + if (refill && ixgbe_rxfill(rxr)) { + /* Advance the Rx Queue "Tail Pointer" */ + IXGBE_WRITE_REG(&sc->hw, IXGBE_RDT(rxr->me), + rxr->last_rx_desc_filled); + } } if (ifp->if_flags & IFF_RUNNING && !IFQ_IS_EMPTY(&ifp->if_snd)) @@ -863,7 +872,7 @@ ixgbe_encap(struct tx_ring *txr, struct mbuf *m_head) /* * Map the packet for DMA. */ - error = bus_dmamap_load_mbuf(txr->txtag, map, + error = bus_dmamap_load_mbuf(txr->txdma.dma_tag, map, m_head, BUS_DMA_NOWAIT); if (error == ENOMEM) { @@ -932,7 +941,7 @@ ixgbe_encap(struct tx_ring *txr, struct mbuf *m_head) txbuf->m_head = m_head; txbuf_mapped->map = txbuf->map; txbuf->map = map; - bus_dmamap_sync(txr->txtag, map, 0, map->dm_mapsize, + bus_dmamap_sync(txr->txdma.dma_tag, map, 0, map->dm_mapsize, BUS_DMASYNC_PREWRITE); /* Set the index of the descriptor that will be marked done */ @@ -942,7 +951,7 @@ ixgbe_encap(struct tx_ring *txr, struct mbuf *m_head) return (0); xmit_fail: - bus_dmamap_unload(txr->txtag, txbuf->map); + bus_dmamap_unload(txr->txdma.dma_tag, txbuf->map); return (error); } @@ -1150,12 +1159,12 @@ ixgbe_stop(void *arg) struct ix_softc *sc = arg; struct ifnet *ifp = &sc->arpcom.ac_if; - INIT_DEBUGOUT("ixgbe_stop: begin\n"); - ixgbe_disable_intr(sc); - /* Tell the stack that the interface is no longer active */ ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); + INIT_DEBUGOUT("ixgbe_stop: begin\n"); + ixgbe_disable_intr(sc); + ixgbe_hw(&sc->hw, reset_hw); sc->hw.adapter_stopped = FALSE; ixgbe_hw(&sc->hw, stop_adapter); @@ -1163,6 +1172,9 @@ ixgbe_stop(void *arg) /* reprogram the RAR[0] in case user changed it. */ ixgbe_hw(&sc->hw, set_rar, 0, sc->hw.mac.addr, 0, IXGBE_RAH_AV); + + ixgbe_free_transmit_structures(sc); + ixgbe_free_receive_structures(sc); } @@ -1384,6 +1396,8 @@ ixgbe_setup_interface(struct ix_softc *sc) ETHER_HDR_LEN - ETHER_CRC_LEN; IFQ_SET_MAXLEN(&ifp->if_snd, sc->num_tx_desc - 1); IFQ_SET_READY(&ifp->if_snd); + + m_clsetwms(ifp, MCLBYTES, 4, sc->num_rx_desc); ifp->if_capabilities = IFCAP_VLAN_MTU; @@ -1443,21 +1457,22 @@ ixgbe_dma_malloc(struct ix_softc *sc, bus_size_t size, int r; dma->dma_tag = os->os_pa->pa_dmat; - r = bus_dmamap_create(dma->dma_tag, size, 1, size, 0, - BUS_DMA_NOWAIT, &dma->dma_map); + r = bus_dmamap_create(dma->dma_tag, size, 1, + size, 0, BUS_DMA_NOWAIT, &dma->dma_map); if (r != 0) { printf("%s: ixgbe_dma_malloc: bus_dma_tag_create failed; " "error %u\n", ifp->if_xname, r); goto fail_0; } - r = bus_dmamem_alloc(dma->dma_tag, size, PAGE_SIZE, 0, - &dma->dma_seg, 1, &dma->dma_nseg, BUS_DMA_NOWAIT); + r = bus_dmamem_alloc(dma->dma_tag, size, PAGE_SIZE, 0, &dma->dma_seg, + 1, &dma->dma_nseg, BUS_DMA_NOWAIT); if (r != 0) { printf("%s: ixgbe_dma_malloc: bus_dmamem_alloc failed; " "error %u\n", ifp->if_xname, r); goto fail_1; } + r = bus_dmamem_map(dma->dma_tag, &dma->dma_seg, dma->dma_nseg, size, &dma->dma_vaddr, BUS_DMA_NOWAIT); if (r != 0) { @@ -1465,6 +1480,7 @@ ixgbe_dma_malloc(struct ix_softc *sc, bus_size_t size, "error %u\n", ifp->if_xname, r); goto fail_2; } + r = bus_dmamap_load(dma->dma_tag, dma->dma_map, dma->dma_vaddr, size, NULL, mapflags | BUS_DMA_NOWAIT); @@ -1473,6 +1489,7 @@ ixgbe_dma_malloc(struct ix_softc *sc, bus_size_t size, "error %u\n", ifp->if_xname, r); goto fail_3; } + dma->dma_size = size; return (0); fail_3: @@ -1501,6 +1518,7 @@ ixgbe_dma_free(struct ix_softc *sc, struct ixgbe_dma_alloc *dma) bus_dmamem_unmap(dma->dma_tag, dma->dma_vaddr, dma->dma_size); bus_dmamem_free(dma->dma_tag, &dma->dma_seg, dma->dma_nseg); bus_dmamap_destroy(dma->dma_tag, dma->dma_map); + dma->dma_map = NULL; } } @@ -1577,15 +1595,6 @@ ixgbe_allocate_queues(struct ix_softc *sc) } txr->tx_hwb = (uint32_t *)txr->txwbdma.dma_vaddr; *txr->tx_hwb = 0; - - /* Now allocate transmit buffers for the ring */ - if (ixgbe_allocate_transmit_buffers(txr)) { - printf("%s: Critical Failure setting up transmit buffers\n", - ifp->if_xname); - error = ENOMEM; - goto err_tx_desc; - } - } /* @@ -1611,14 +1620,6 @@ ixgbe_allocate_queues(struct ix_softc *sc) } rxr->rx_base = (union ixgbe_adv_rx_desc *)rxr->rxdma.dma_vaddr; bzero((void *)rxr->rx_base, rsize); - - /* Allocate receive buffers for the ring*/ - if (ixgbe_allocate_receive_buffers(rxr)) { - printf("%s: Critical Failure setting up receive buffers\n", - ifp->if_xname); - error = ENOMEM; - goto err_rx_desc; - } } return (0); @@ -1632,8 +1633,10 @@ err_tx_desc: ixgbe_dma_free(sc, &txr->txwbdma); } free(sc->rx_rings, M_DEVBUF); + sc->rx_rings = NULL; rx_fail: free(sc->tx_rings, M_DEVBUF); + sc->tx_rings = NULL; fail: return (error); } @@ -1648,37 +1651,42 @@ fail: int ixgbe_allocate_transmit_buffers(struct tx_ring *txr) { - struct ix_softc *sc = txr->sc; - struct ixgbe_osdep *os = &sc->osdep; - struct ifnet *ifp = &sc->arpcom.ac_if; - struct ixgbe_tx_buf *txbuf; - int error, i; + struct ix_softc *sc; + struct ixgbe_osdep *os; + struct ifnet *ifp; + struct ixgbe_tx_buf *txbuf; + int error, i; + + sc = txr->sc; + os = &sc->osdep; + ifp = &sc->arpcom.ac_if; - txr->txtag = os->os_pa->pa_dmat; if (!(txr->tx_buffers = (struct ixgbe_tx_buf *) malloc(sizeof(struct ixgbe_tx_buf) * sc->num_tx_desc, M_DEVBUF, M_NOWAIT | M_ZERO))) { - printf("%s: Unable to allocate tx_buffer memory\n", ifp->if_xname); + printf("%s: Unable to allocate tx_buffer memory\n", + ifp->if_xname); error = ENOMEM; goto fail; } + txr->txtag = txr->txdma.dma_tag; /* Create the descriptor buffer dma maps */ - txbuf = txr->tx_buffers; - for (i = 0; i < sc->num_tx_desc; i++, txbuf++) { - error = bus_dmamap_create(txr->txtag, IXGBE_TSO_SIZE, + for (i = 0; i < sc->num_tx_desc; i++) { + txbuf = &txr->tx_buffers[i]; + error = bus_dmamap_create(txr->txdma.dma_tag, IXGBE_TSO_SIZE, IXGBE_MAX_SCATTER, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &txbuf->map); + if (error != 0) { - printf("%s: Unable to create TX DMA map\n", ifp->if_xname); + printf("%s: Unable to create TX DMA map\n", + ifp->if_xname); goto fail; } } return 0; fail: - /* We free all, it handles case where we are in the middle */ - ixgbe_free_transmit_structures(sc); return (error); } @@ -1687,33 +1695,24 @@ fail: * Initialize a transmit ring. * **********************************************************************/ -void +int ixgbe_setup_transmit_ring(struct tx_ring *txr) { - struct ix_softc *sc = txr->sc; - struct ixgbe_tx_buf *txbuf; - int i; + struct ix_softc *sc = txr->sc; + int error; + + /* Now allocate transmit buffers for the ring */ + if ((error = ixgbe_allocate_transmit_buffers(txr)) != 0) + return (error); /* Clear the old ring contents */ bzero((void *)txr->tx_base, (sizeof(union ixgbe_adv_tx_desc)) * sc->num_tx_desc); + /* Reset indices */ txr->next_avail_tx_desc = 0; txr->next_tx_to_clean = 0; - /* Free any existing tx buffers. */ - txbuf = txr->tx_buffers; - for (i = 0; i < sc->num_tx_desc; i++, txbuf++) { - if (txbuf->m_head != NULL) { - bus_dmamap_sync(txr->txtag, txbuf->map, - 0, txbuf->map->dm_mapsize, - BUS_DMASYNC_POSTWRITE); - bus_dmamap_unload(txr->txtag, txbuf->map); - m_freem(txbuf->m_head); - } - txbuf->m_head = NULL; - } - /* Set number of descriptors available */ txr->tx_avail = sc->num_tx_desc; @@ -1721,6 +1720,7 @@ ixgbe_setup_transmit_ring(struct tx_ring *txr) 0, txr->txdma.dma_map->dm_mapsize, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + return (0); } /********************************************************************* @@ -1732,12 +1732,17 @@ int ixgbe_setup_transmit_structures(struct ix_softc *sc) { struct tx_ring *txr = sc->tx_rings; - int i; + int i, error; - for (i = 0; i < sc->num_tx_queues; i++, txr++) - ixgbe_setup_transmit_ring(txr); + for (i = 0; i < sc->num_tx_queues; i++, txr++) { + if ((error = ixgbe_setup_transmit_ring(txr)) != 0) + goto fail; + } return (0); +fail: + ixgbe_free_transmit_structures(sc); + return (error); } /********************************************************************* @@ -1806,10 +1811,7 @@ ixgbe_free_transmit_structures(struct ix_softc *sc) for (i = 0; i < sc->num_tx_queues; i++, txr++) { ixgbe_free_transmit_buffers(txr); - ixgbe_dma_free(sc, &txr->txdma); - ixgbe_dma_free(sc, &txr->txwbdma); } - free(sc->tx_rings, M_DEVBUF); } /********************************************************************* @@ -1831,29 +1833,28 @@ ixgbe_free_transmit_buffers(struct tx_ring *txr) tx_buffer = txr->tx_buffers; for (i = 0; i < sc->num_tx_desc; i++, tx_buffer++) { - if (tx_buffer->m_head != NULL) { - bus_dmamap_sync(txr->txtag, tx_buffer->map, + if (tx_buffer->map != NULL && tx_buffer->map->dm_nsegs > 0) { + bus_dmamap_sync(txr->txdma.dma_tag, tx_buffer->map, 0, tx_buffer->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); - bus_dmamap_unload(txr->txtag, + bus_dmamap_unload(txr->txdma.dma_tag, tx_buffer->map); + } + if (tx_buffer->m_head != NULL) { m_freem(tx_buffer->m_head); - if (tx_buffer->map != NULL) { - bus_dmamap_destroy(txr->txtag, - tx_buffer->map); - } - } else if (tx_buffer->map != NULL) { - bus_dmamap_unload(txr->txtag, - tx_buffer->map); - bus_dmamap_destroy(txr->txtag, + tx_buffer->m_head = NULL; + } + if (tx_buffer->map != NULL) { + bus_dmamap_destroy(txr->txdma.dma_tag, tx_buffer->map); + tx_buffer->map = NULL; } - tx_buffer->m_head = NULL; - tx_buffer->map = NULL; } - if (txr->tx_buffers != NULL) + if (txr->tx_buffers != NULL) { free(txr->tx_buffers, M_DEVBUF); + txr->tx_buffers = NULL; + } txr->tx_buffers = NULL; txr->txtag = NULL; } @@ -2154,11 +2155,11 @@ ixgbe_txeof(struct tx_ring *txr) if (tx_buffer->m_head) { ifp->if_opackets++; - bus_dmamap_sync(txr->txtag, + bus_dmamap_sync(txr->txdma.dma_tag, tx_buffer->map, 0, tx_buffer->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); - bus_dmamap_unload(txr->txtag, + bus_dmamap_unload(txr->txdma.dma_tag, tx_buffer->map); m_freem(tx_buffer->m_head); tx_buffer->m_head = NULL; @@ -2221,92 +2222,79 @@ ixgbe_txeof(struct tx_ring *txr) * **********************************************************************/ int -ixgbe_get_buf(struct rx_ring *rxr, int i, struct mbuf *nmp) +ixgbe_get_buf(struct rx_ring *rxr, int i) { - struct ix_softc *sc = rxr->sc; - struct mbuf *mp = nmp; - bus_dmamap_t map; - int error, old, s = 0; - int size = MCLBYTES; + struct ix_softc *sc = rxr->sc; + struct mbuf *m; + int error; + int size = MCLBYTES; struct ixgbe_rx_buf *rxbuf; + union ixgbe_adv_rx_desc *rxdesc; + size_t dsize = sizeof(union ixgbe_adv_rx_desc); -#ifdef notyet - /* Are we going to Jumbo clusters? */ - if (sc->bigbufs) { - size = MJUMPAGESIZE; - s = 1; - }; - - mp = m_getjcl(M_DONTWAIT, MT_DATA, M_PKTHDR, size); - if (mp == NULL) { - sc->mbuf_alloc_failed++; + rxbuf = &rxr->rx_buffers[i]; + rxdesc = &rxr->rx_base[i]; + + if (rxbuf->m_head != NULL) { + printf("%s: ixgbe_get_buf: slot %d already has an mbuf\n", + sc->dev.dv_xname, i); return (ENOBUFS); } -#endif - if (mp == NULL) { - MGETHDR(mp, M_DONTWAIT, MT_DATA); - if (mp == NULL) { - sc->mbuf_alloc_failed++; - return (ENOBUFS); - } - MCLGET(mp, M_DONTWAIT); - if ((mp->m_flags & M_EXT) == 0) { - m_freem(mp); - sc->mbuf_cluster_failed++; - return (ENOBUFS); - } - mp->m_len = mp->m_pkthdr.len = size; - } else { - mp->m_len = mp->m_pkthdr.len = size; - mp->m_data = mp->m_ext.ext_buf; - mp->m_next = NULL; + MGETHDR(m, M_DONTWAIT, MT_DATA); + if (m == NULL) { + sc->mbuf_alloc_failed++; + return (ENOBUFS); } + MCLGETI(m, M_DONTWAIT, &sc->arpcom.ac_if, size); + if ((m->m_flags & M_EXT) == 0) { + m_freem(m); + sc->mbuf_cluster_failed++; + return (ENOBUFS); + } + m->m_len = m->m_pkthdr.len = size; + if (sc->max_frame_size <= (size - ETHER_ALIGN)) + m_adj(m, ETHER_ALIGN); - if (sc->max_frame_size <= (MCLBYTES - ETHER_ALIGN)) - m_adj(mp, ETHER_ALIGN); - - /* - * Using memory from the mbuf cluster pool, invoke the bus_dma - * machinery to arrange the memory mapping. - */ - error = bus_dmamap_load_mbuf(rxr->rxtag[s], rxr->spare_map[s], - mp, BUS_DMA_NOWAIT); + error = bus_dmamap_load_mbuf(rxr->rxdma.dma_tag, rxbuf->map, + m, BUS_DMA_NOWAIT); if (error) { - m_freem(mp); + m_freem(m); return (error); } - /* Now check our target buffer for existing mapping */ - rxbuf = &rxr->rx_buffers[i]; - old = rxbuf->bigbuf; - if (rxbuf->m_head != NULL) - bus_dmamap_unload(rxr->rxtag[old], rxbuf->map[old]); - - map = rxbuf->map[old]; - rxbuf->map[s] = rxr->spare_map[s]; - rxr->spare_map[old] = map; - rxbuf->m_head = mp; - rxbuf->bigbuf = s; + bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, + 0, rxbuf->map->dm_mapsize, BUS_DMASYNC_PREREAD); + rxbuf->m_head = m; - rxr->rx_base[i].read.pkt_addr = - htole64(rxbuf->map[s]->dm_segs[0].ds_addr); + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, + dsize * i, dsize, BUS_DMASYNC_POSTWRITE); - bus_dmamap_sync(rxr->rxtag[s], rxbuf->map[s], - 0, rxbuf->map[s]->dm_mapsize, BUS_DMASYNC_PREREAD); + bzero(rxdesc, dsize); + rxdesc->read.pkt_addr = htole64(rxbuf->map->dm_segs[0].ds_addr); #ifndef NO_82598_A0_SUPPORT /* A0 needs to One's Compliment descriptors */ if (sc->hw.revision_id == 0) { - struct dhack {uint32_t a1; uint32_t a2; uint32_t b1; uint32_t b2;}; + struct dhack { + uint32_t a1; + uint32_t a2; + uint32_t b1; + uint32_t b2; + }; struct dhack *d; - d = (struct dhack *)&rxr->rx_base[i]; + d = (struct dhack *)rxdesc; d->a1 = ~(d->a1); d->a2 = ~(d->a2); } #endif + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, + dsize * i, dsize, BUS_DMASYNC_PREWRITE); + + rxr->rx_ndescs++; + return (0); } @@ -2323,57 +2311,37 @@ ixgbe_allocate_receive_buffers(struct rx_ring *rxr) { struct ix_softc *sc = rxr->sc; struct ifnet *ifp = &sc->arpcom.ac_if; - struct ixgbe_osdep *os = &sc->osdep; struct ixgbe_rx_buf *rxbuf; - int i, bsize, error; + int i, bsize, error, size = MCLBYTES; bsize = sizeof(struct ixgbe_rx_buf) * sc->num_rx_desc; - if (!(rxr->rx_buffers = - (struct ixgbe_rx_buf *) malloc(bsize, + if (!(rxr->rx_buffers = (struct ixgbe_rx_buf *) malloc(bsize, M_DEVBUF, M_NOWAIT | M_ZERO))) { - printf("%s: Unable to allocate rx_buffer memory\n", ifp->if_xname); + printf("%s: Unable to allocate rx_buffer memory\n", + ifp->if_xname); error = ENOMEM; goto fail; } - rxr->rxtag[0] = rxr->rxtag[1] = os->os_pa->pa_dmat; - - /* Create the spare maps (used by getbuf) */ - error = bus_dmamap_create(rxr->rxtag[0], - MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &rxr->spare_map[0]); - if (error) { - printf("%s: %s: bus_dmamap_create failed: %d\n", ifp->if_xname, - __func__, error); - goto fail; - } - error = bus_dmamap_create(rxr->rxtag[1], - MJUMPAGESIZE, 1, MJUMPAGESIZE, 0, BUS_DMA_NOWAIT, &rxr->spare_map[1]); - if (error) { - printf("%s: %s: bus_dmamap_create failed: %d\n", ifp->if_xname, - __func__, error); - goto fail; - } + rxr->rxtag = rxr->rxdma.dma_tag; + rxbuf = rxr->rx_buffers; for (i = 0; i < sc->num_rx_desc; i++, rxbuf++) { - rxbuf = &rxr->rx_buffers[i]; - error = bus_dmamap_create(rxr->rxtag[0], MCLBYTES, 1, MCLBYTES, - 0, BUS_DMA_NOWAIT, &rxbuf->map[0]); + error = bus_dmamap_create(rxr->rxdma.dma_tag, size, 1, + size, 0, BUS_DMA_NOWAIT, &rxbuf->map); if (error) { - printf("%s: Unable to create Small RX DMA map\n", ifp->if_xname); - goto fail; - } - error = bus_dmamap_create(rxr->rxtag[1], MJUMPAGESIZE, 1, MJUMPAGESIZE, - 0, BUS_DMA_NOWAIT, &rxbuf->map[1]); - if (error) { - printf("%s: Unable to create Large RX DMA map\n", ifp->if_xname); + printf("%s: Unable to create Rx DMA map\n", + ifp->if_xname); goto fail; } + rxbuf->m_head = NULL; } + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 0, + rxr->rxdma.dma_map->dm_mapsize, + BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return (0); fail: - /* Frees all, but can handle partial completion */ - ixgbe_free_receive_structures(sc); return (error); } @@ -2386,69 +2354,50 @@ int ixgbe_setup_receive_ring(struct rx_ring *rxr) { struct ix_softc *sc = rxr->sc; - struct ixgbe_rx_buf *rxbuf; - int j, rsize, s = 0, i; + int rsize, error; rsize = roundup2(sc->num_rx_desc * sizeof(union ixgbe_adv_rx_desc), 4096); /* Clear the ring contents */ bzero((void *)rxr->rx_base, rsize); - /* - ** Free current RX buffers: the size buffer - ** that is loaded is indicated by the buffer - ** bigbuf value. - */ - for (i = 0; i < sc->num_rx_desc; i++) { - rxbuf = &rxr->rx_buffers[i]; - s = rxbuf->bigbuf; - if (rxbuf->m_head != NULL) { - bus_dmamap_sync(rxr->rxtag[s], rxbuf->map[s], - 0, rxbuf->map[s]->dm_mapsize, - BUS_DMASYNC_POSTREAD); - bus_dmamap_unload(rxr->rxtag[s], rxbuf->map[s]); - m_freem(rxbuf->m_head); - rxbuf->m_head = NULL; - } - } - - for (j = 0; j < sc->num_rx_desc; j++) { - if (ixgbe_get_buf(rxr, j, NULL) == ENOBUFS) { - rxr->rx_buffers[j].m_head = NULL; - rxr->rx_base[j].read.pkt_addr = 0; - /* If we fail some may have change size */ - s = sc->bigbufs; - goto fail; - } - } + if ((error = ixgbe_allocate_receive_buffers(rxr)) != 0) + return (error); /* Setup our descriptor indices */ rxr->next_to_check = 0; - rxr->last_cleaned = 0; + rxr->last_rx_desc_filled = sc->num_rx_desc - 1; - bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, - 0, rxr->rxdma.dma_map->dm_mapsize, - BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + ixgbe_rxfill(rxr); + if (rxr->rx_ndescs < 1) { + printf("%s: unable to fill any rx descriptors\n", + sc->dev.dv_xname); + return (ENOBUFS); + } return (0); -fail: - /* - * We need to clean up any buffers allocated so far - * 'j' is the failing index, decrement it to get the - * last success. - */ - for (--j; j < 0; j--) { - rxbuf = &rxr->rx_buffers[j]; - if (rxbuf->m_head != NULL) { - bus_dmamap_sync(rxr->rxtag[s], rxbuf->map[s], - 0, rxbuf->map[s]->dm_mapsize, - BUS_DMASYNC_POSTREAD); - bus_dmamap_unload(rxr->rxtag[s], rxbuf->map[s]); - m_freem(rxbuf->m_head); - rxbuf->m_head = NULL; - } +} + +int +ixgbe_rxfill(struct rx_ring *rxr) +{ + struct ix_softc *sc = rxr->sc; + int post = 0; + int i; + + i = rxr->last_rx_desc_filled; + while (rxr->rx_ndescs < sc->num_rx_desc) { + if (++i == sc->num_rx_desc) + i = 0; + + if (ixgbe_get_buf(rxr, i) != 0) + break; + + rxr->last_rx_desc_filled = i; + post = 1; } - return (ENOBUFS); + + return (post); } /********************************************************************* @@ -2460,36 +2409,16 @@ int ixgbe_setup_receive_structures(struct ix_softc *sc) { struct rx_ring *rxr = sc->rx_rings; - int i, j, s; + int i; for (i = 0; i < sc->num_rx_queues; i++, rxr++) if (ixgbe_setup_receive_ring(rxr)) goto fail; return (0); -fail: - /* - * Free RX buffers allocated so far, we will only handle - * the rings that completed, the failing case will have - * cleaned up for itself. The value of 'i' will be the - * failed ring so we must pre-decrement it. - */ - rxr = sc->rx_rings; - for (--i; i > 0; i--, rxr++) { - for (j = 0; j < sc->num_rx_desc; j++) { - struct ixgbe_rx_buf *rxbuf; - rxbuf = &rxr->rx_buffers[j]; - s = rxbuf->bigbuf; - if (rxbuf->m_head != NULL) { - bus_dmamap_sync(rxr->rxtag[s], rxbuf->map[s], - 0, rxbuf->map[s]->dm_mapsize, BUS_DMASYNC_POSTREAD); - bus_dmamap_unload(rxr->rxtag[s], rxbuf->map[s]); - m_freem(rxbuf->m_head); - rxbuf->m_head = NULL; - } - } - } +fail: + ixgbe_free_receive_structures(sc); return (ENOBUFS); } @@ -2558,7 +2487,7 @@ ixgbe_initialize_receive_units(struct ix_softc *sc) /* Setup the HW Rx Head and Tail Descriptor Pointers */ IXGBE_WRITE_REG(&sc->hw, IXGBE_RDH(i), 0); IXGBE_WRITE_REG(&sc->hw, IXGBE_RDT(i), - sc->num_rx_desc - 1); + rxr->last_rx_desc_filled); } rxcsum = IXGBE_READ_REG(&sc->hw, IXGBE_RXCSUM); @@ -2638,11 +2567,7 @@ ixgbe_free_receive_structures(struct ix_softc *sc) for (i = 0; i < sc->num_rx_queues; i++, rxr++) { ixgbe_free_receive_buffers(rxr); - /* Free the ring memory as well */ - ixgbe_dma_free(sc, &rxr->rxdma); } - - free(sc->rx_rings, M_DEVBUF); } /********************************************************************* @@ -2655,34 +2580,38 @@ ixgbe_free_receive_buffers(struct rx_ring *rxr) { struct ix_softc *sc = NULL; struct ixgbe_rx_buf *rxbuf = NULL; - int i, s; + int i; INIT_DEBUGOUT("free_receive_buffers: begin"); sc = rxr->sc; if (rxr->rx_buffers != NULL) { - rxbuf = &rxr->rx_buffers[0]; - for (i = 0; i < sc->num_rx_desc; i++) { - int s = rxbuf->bigbuf; - if (rxbuf->map != NULL) { - bus_dmamap_unload(rxr->rxtag[s], rxbuf->map[s]); - bus_dmamap_destroy(rxr->rxtag[s], rxbuf->map[s]); - } + rxbuf = rxr->rx_buffers; + for (i = 0; i < sc->num_rx_desc; i++, rxbuf++) { if (rxbuf->m_head != NULL) { + bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, + 0, rxbuf->map->dm_mapsize, + BUS_DMASYNC_POSTREAD); + bus_dmamap_unload(rxr->rxdma.dma_tag, rxbuf->map); m_freem(rxbuf->m_head); + rxbuf->m_head = NULL; } - rxbuf->m_head = NULL; - ++rxbuf; + bus_dmamap_destroy(rxr->rxdma.dma_tag, rxbuf->map); + rxbuf->map = NULL; } } if (rxr->rx_buffers != NULL) { free(rxr->rx_buffers, M_DEVBUF); rxr->rx_buffers = NULL; } - for (s = 0; s < 2; s++) { - if (rxr->rxtag[s] != NULL) - rxr->rxtag[s] = NULL; + + if (rxr->rxtag != NULL) + rxr->rxtag = NULL; + + if (rxr->fmp != NULL) { + m_freem(rxr->fmp); + rxr->fmp = NULL; + rxr->lmp = NULL; } - return; } /********************************************************************* @@ -2700,130 +2629,154 @@ ixgbe_rxeof(struct rx_ring *rxr, int count) { struct ix_softc *sc = rxr->sc; struct ifnet *ifp = &sc->arpcom.ac_if; - struct mbuf *mp; - int len, i, eop = 0; - uint8_t accept_frame = 0; + struct mbuf *m; + uint8_t accept_frame = 0; + uint8_t eop = 0; + uint16_t len, desc_len, prev_len_adj; uint32_t staterr; - union ixgbe_adv_rx_desc *cur; + struct ixgbe_rx_buf *rxbuf; + union ixgbe_adv_rx_desc *rxdesc; + size_t dsize = sizeof(union ixgbe_adv_rx_desc); + int i; + + if (!ISSET(ifp->if_flags, IFF_RUNNING)) + return FALSE; i = rxr->next_to_check; - cur = &rxr->rx_base[i]; - bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, 0, - rxr->rxdma.dma_map->dm_mapsize, BUS_DMASYNC_POSTREAD); + while (count != 0 && rxr->rx_ndescs > 0) { + m = NULL; - staterr = cur->wb.upper.status_error; - if (!(staterr & IXGBE_RXD_STAT_DD)) - return FALSE; + rxdesc = &rxr->rx_base[i]; + rxbuf = &rxr->rx_buffers[i]; + + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, + dsize * i, dsize, + BUS_DMASYNC_POSTREAD); - while ((staterr & IXGBE_RXD_STAT_DD) && (count != 0) && - (ifp->if_flags & IFF_RUNNING)) { - struct mbuf *m = NULL; - int s; + staterr = letoh32(rxdesc->wb.upper.status_error); + if (!ISSET(staterr, IXGBE_RXD_STAT_DD)) { + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, + dsize * i, dsize, + BUS_DMASYNC_PREREAD); + break; + } - mp = rxr->rx_buffers[i].m_head; - s = rxr->rx_buffers[i].bigbuf; - bus_dmamap_sync(rxr->rxtag[s], rxr->rx_buffers[i].map[s], - 0, rxr->rx_buffers[i].map[s]->dm_mapsize, + /* pull the mbuf off the ring */ + bus_dmamap_sync(rxr->rxdma.dma_tag, rxbuf->map, 0, + rxbuf->map->dm_mapsize, BUS_DMASYNC_POSTREAD); - bus_dmamap_unload(rxr->rxtag[s], - rxr->rx_buffers[i].map[s]); + bus_dmamap_unload(rxr->rxdma.dma_tag, rxbuf->map); + m = rxbuf->m_head; + rxbuf->m_head = NULL; + + if (m == NULL) { + panic("%s: ixgbe_rxeof: NULL mbuf in slot %d " + "(nrx %d, filled %d)", sc->dev.dv_xname, + i, rxr->rx_ndescs, + rxr->last_rx_desc_filled); + } + + m_cluncount(m, 1); + rxr->rx_ndescs--; accept_frame = 1; + prev_len_adj = 0; + desc_len = letoh16(rxdesc->wb.upper.length); + if (staterr & IXGBE_RXD_STAT_EOP) { count--; eop = 1; } else { eop = 0; } - len = cur->wb.upper.length; + len = desc_len; if (staterr & IXGBE_RXDADV_ERR_FRAME_ERR_MASK) accept_frame = 0; if (accept_frame) { - /* Get a fresh buffer */ - if (ixgbe_get_buf(rxr, i, NULL) != 0) { - ifp->if_iqdrops++; - goto discard; - } + m->m_len = len; - /* Assign correct length to the current fragment */ - mp->m_len = len; + /* XXX ixgbe_realign() STRICT_ALIGN */ if (rxr->fmp == NULL) { - mp->m_pkthdr.len = len; - rxr->fmp = mp; /* Store the first mbuf */ - rxr->lmp = mp; + m->m_pkthdr.len = m->m_len; + rxr->fmp = m; /* Store the first mbuf */ + rxr->lmp = m; } else { /* Chain mbuf's together */ - mp->m_flags &= ~M_PKTHDR; - rxr->lmp->m_next = mp; - rxr->lmp = rxr->lmp->m_next; - rxr->fmp->m_pkthdr.len += len; + m->m_flags &= ~M_PKTHDR; +#if 0 + /* + * Adjust length of previous mbuf in chain if + * we received less than 4 bytes in the last + * descriptor. + */ + if (prev_len_adj > 0) { + rxr->lmp->m_len -= prev_len_adj; + rxr->fmp->m_pkthdr.len -= prev_len_adj; + } +#endif + rxr->lmp->m_next = m; + rxr->lmp = m; + rxr->fmp->m_pkthdr.len += m->m_len; } if (eop) { - rxr->fmp->m_pkthdr.rcvif = ifp; ifp->if_ipackets++; + + m = rxr->fmp; + m->m_pkthdr.rcvif = ifp; + rxr->packet_count++; rxr->byte_count += rxr->fmp->m_pkthdr.len; - ixgbe_rx_checksum(sc, staterr, rxr->fmp); + + ixgbe_rx_checksum(sc, staterr, m); #if NVLAN > 0 if (staterr & IXGBE_RXD_STAT_VP) { - rxr->fmp->m_pkthdr.ether_vtag = - letoh16(cur->wb.upper.vlan); - rxr->fmp->m_flags |= M_VLANTAG; + m->m_pkthdr.ether_vtag = + letoh16(rxdesc->wb.upper.vlan); + m->m_flags |= M_VLANTAG; } #endif +#if NBPFILTER > 0 + if (ifp->if_bpf) + bpf_mtap_ether(ifp->if_bpf, m, + BPF_DIRECTION_IN); +#endif + + ether_input_mbuf(ifp, m); - m = rxr->fmp; rxr->fmp = NULL; rxr->lmp = NULL; } } else { -discard: - ixgbe_get_buf(rxr, i, mp); + sc->dropped_pkts++; + if (rxr->fmp != NULL) { m_freem(rxr->fmp); rxr->fmp = NULL; rxr->lmp = NULL; } - m = NULL; + + m_freem(m); } /* Zero out the receive descriptors status */ - cur->wb.upper.status_error = 0; - bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, - 0, rxr->rxdma.dma_map->dm_mapsize, - BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); + rxdesc->wb.upper.status_error = 0; - rxr->last_cleaned = i; /* for updating tail */ + bus_dmamap_sync(rxr->rxdma.dma_tag, rxr->rxdma.dma_map, + dsize * i, dsize, + BUS_DMASYNC_PREREAD); + /* Advance our pointers to the next descriptor. */ if (++i == sc->num_rx_desc) i = 0; - - /* Now send up to the stack */ - if (m != NULL) { - rxr->next_to_check = i; -#if NBPFILTER > 0 - if (ifp->if_bpf) - bpf_mtap_ether(ifp->if_bpf, m, - BPF_DIRECTION_IN); -#endif - ether_input_mbuf(ifp, m); - i = rxr->next_to_check; - } - /* Get next descriptor */ - cur = &rxr->rx_base[i]; - staterr = cur->wb.upper.status_error; } rxr->next_to_check = i; - /* Advance the IXGB's Receive Queue "Tail Pointer" */ - IXGBE_WRITE_REG(&sc->hw, IXGBE_RDT(rxr->me), rxr->last_cleaned); - if (!(staterr & IXGBE_RXD_STAT_DD)) return FALSE; diff --git a/sys/dev/pci/if_ix.h b/sys/dev/pci/if_ix.h index 09db3de2318..63d2f04580e 100644 --- a/sys/dev/pci/if_ix.h +++ b/sys/dev/pci/if_ix.h @@ -1,4 +1,4 @@ -/* $OpenBSD: if_ix.h,v 1.6 2009/06/25 17:01:32 deraadt Exp $ */ +/* $OpenBSD: if_ix.h,v 1.7 2009/06/28 22:20:20 jsg Exp $ */ /****************************************************************************** @@ -158,9 +158,7 @@ struct ixgbe_tx_buf { struct ixgbe_rx_buf { struct mbuf *m_head; - int bigbuf; - /* one small and one large map */ - bus_dmamap_t map[2]; + bus_dmamap_t map; }; /* @@ -218,11 +216,11 @@ struct rx_ring { #if 0 struct lro_ctrl lro; #endif - unsigned int last_cleaned; + unsigned int last_rx_desc_filled; unsigned int next_to_check; + int rx_ndescs; struct ixgbe_rx_buf *rx_buffers; - bus_dma_tag_t rxtag[2]; - bus_dmamap_t spare_map[2]; + bus_dma_tag_t rxtag; struct mbuf *fmp; struct mbuf *lmp; /* Soft stats */ |