diff options
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/amd/au1000_eth.c | 149 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/pcnet32.c | 45 | ||||
| -rw-r--r-- | drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/broadcom/tg3.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/vnic_dev.c | 8 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fs_enet/mac-fec.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/fs_enet/mac-scc.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/marvell/sky2.c | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/micrel/ksz884x.c | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 88 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c | 4 | ||||
| -rw-r--r-- | drivers/net/ethernet/qlogic/qlge/qlge_main.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/sun/sunvnet.c | 38 | ||||
| -rw-r--r-- | drivers/net/ethernet/sun/sunvnet.h | 4 |
14 files changed, 270 insertions, 101 deletions
diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c index a78e4c136959..31c48a7ac2b6 100644 --- a/drivers/net/ethernet/amd/au1000_eth.c +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -89,6 +89,124 @@ MODULE_DESCRIPTION(DRV_DESC); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); +/* AU1000 MAC registers and bits */ +#define MAC_CONTROL 0x0 +# define MAC_RX_ENABLE (1 << 2) +# define MAC_TX_ENABLE (1 << 3) +# define MAC_DEF_CHECK (1 << 5) +# define MAC_SET_BL(X) (((X) & 0x3) << 6) +# define MAC_AUTO_PAD (1 << 8) +# define MAC_DISABLE_RETRY (1 << 10) +# define MAC_DISABLE_BCAST (1 << 11) +# define MAC_LATE_COL (1 << 12) +# define MAC_HASH_MODE (1 << 13) +# define MAC_HASH_ONLY (1 << 15) +# define MAC_PASS_ALL (1 << 16) +# define MAC_INVERSE_FILTER (1 << 17) +# define MAC_PROMISCUOUS (1 << 18) +# define MAC_PASS_ALL_MULTI (1 << 19) +# define MAC_FULL_DUPLEX (1 << 20) +# define MAC_NORMAL_MODE 0 +# define MAC_INT_LOOPBACK (1 << 21) +# define MAC_EXT_LOOPBACK (1 << 22) +# define MAC_DISABLE_RX_OWN (1 << 23) +# define MAC_BIG_ENDIAN (1 << 30) +# define MAC_RX_ALL (1 << 31) +#define MAC_ADDRESS_HIGH 0x4 +#define MAC_ADDRESS_LOW 0x8 +#define MAC_MCAST_HIGH 0xC +#define MAC_MCAST_LOW 0x10 +#define MAC_MII_CNTRL 0x14 +# define MAC_MII_BUSY (1 << 0) +# define MAC_MII_READ 0 +# define MAC_MII_WRITE (1 << 1) +# define MAC_SET_MII_SELECT_REG(X) (((X) & 0x1f) << 6) +# define MAC_SET_MII_SELECT_PHY(X) (((X) & 0x1f) << 11) +#define MAC_MII_DATA 0x18 +#define MAC_FLOW_CNTRL 0x1C +# define MAC_FLOW_CNTRL_BUSY (1 << 0) +# define MAC_FLOW_CNTRL_ENABLE (1 << 1) +# define MAC_PASS_CONTROL (1 << 2) +# define MAC_SET_PAUSE(X) (((X) & 0xffff) << 16) +#define MAC_VLAN1_TAG 0x20 +#define MAC_VLAN2_TAG 0x24 + +/* Ethernet Controller Enable */ +# define MAC_EN_CLOCK_ENABLE (1 << 0) +# define MAC_EN_RESET0 (1 << 1) +# define MAC_EN_TOSS (0 << 2) +# define MAC_EN_CACHEABLE (1 << 3) +# define MAC_EN_RESET1 (1 << 4) +# define MAC_EN_RESET2 (1 << 5) +# define MAC_DMA_RESET (1 << 6) + +/* Ethernet Controller DMA Channels */ +/* offsets from MAC_TX_RING_ADDR address */ +#define MAC_TX_BUFF0_STATUS 0x0 +# define TX_FRAME_ABORTED (1 << 0) +# define TX_JAB_TIMEOUT (1 << 1) +# define TX_NO_CARRIER (1 << 2) +# define TX_LOSS_CARRIER (1 << 3) +# define TX_EXC_DEF (1 << 4) +# define TX_LATE_COLL_ABORT (1 << 5) +# define TX_EXC_COLL (1 << 6) +# define TX_UNDERRUN (1 << 7) +# define TX_DEFERRED (1 << 8) +# define TX_LATE_COLL (1 << 9) +# define TX_COLL_CNT_MASK (0xF << 10) +# define TX_PKT_RETRY (1 << 31) +#define MAC_TX_BUFF0_ADDR 0x4 +# define TX_DMA_ENABLE (1 << 0) +# define TX_T_DONE (1 << 1) +# define TX_GET_DMA_BUFFER(X) (((X) >> 2) & 0x3) +#define MAC_TX_BUFF0_LEN 0x8 +#define MAC_TX_BUFF1_STATUS 0x10 +#define MAC_TX_BUFF1_ADDR 0x14 +#define MAC_TX_BUFF1_LEN 0x18 +#define MAC_TX_BUFF2_STATUS 0x20 +#define MAC_TX_BUFF2_ADDR 0x24 +#define MAC_TX_BUFF2_LEN 0x28 +#define MAC_TX_BUFF3_STATUS 0x30 +#define MAC_TX_BUFF3_ADDR 0x34 +#define MAC_TX_BUFF3_LEN 0x38 + +/* offsets from MAC_RX_RING_ADDR */ +#define MAC_RX_BUFF0_STATUS 0x0 +# define RX_FRAME_LEN_MASK 0x3fff +# define RX_WDOG_TIMER (1 << 14) +# define RX_RUNT (1 << 15) +# define RX_OVERLEN (1 << 16) +# define RX_COLL (1 << 17) +# define RX_ETHER (1 << 18) +# define RX_MII_ERROR (1 << 19) +# define RX_DRIBBLING (1 << 20) +# define RX_CRC_ERROR (1 << 21) +# define RX_VLAN1 (1 << 22) +# define RX_VLAN2 (1 << 23) +# define RX_LEN_ERROR (1 << 24) +# define RX_CNTRL_FRAME (1 << 25) +# define RX_U_CNTRL_FRAME (1 << 26) +# define RX_MCAST_FRAME (1 << 27) +# define RX_BCAST_FRAME (1 << 28) +# define RX_FILTER_FAIL (1 << 29) +# define RX_PACKET_FILTER (1 << 30) +# define RX_MISSED_FRAME (1 << 31) + +# define RX_ERROR (RX_WDOG_TIMER | RX_RUNT | RX_OVERLEN | \ + RX_COLL | RX_MII_ERROR | RX_CRC_ERROR | \ + RX_LEN_ERROR | RX_U_CNTRL_FRAME | RX_MISSED_FRAME) +#define MAC_RX_BUFF0_ADDR 0x4 +# define RX_DMA_ENABLE (1 << 0) +# define RX_T_DONE (1 << 1) +# define RX_GET_DMA_BUFFER(X) (((X) >> 2) & 0x3) +# define RX_SET_BUFF_ADDR(X) ((X) & 0xffffffc0) +#define MAC_RX_BUFF1_STATUS 0x10 +#define MAC_RX_BUFF1_ADDR 0x14 +#define MAC_RX_BUFF2_STATUS 0x20 +#define MAC_RX_BUFF2_ADDR 0x24 +#define MAC_RX_BUFF3_STATUS 0x30 +#define MAC_RX_BUFF3_ADDR 0x34 + /* * Theory of operation * @@ -152,10 +270,12 @@ static void au1000_enable_mac(struct net_device *dev, int force_reset) if (force_reset || (!aup->mac_enabled)) { writel(MAC_EN_CLOCK_ENABLE, aup->enable); - au_sync_delay(2); + wmb(); /* drain writebuffer */ + mdelay(2); writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2 | MAC_EN_CLOCK_ENABLE), aup->enable); - au_sync_delay(2); + wmb(); /* drain writebuffer */ + mdelay(2); aup->mac_enabled = 1; } @@ -273,7 +393,8 @@ static void au1000_hard_stop(struct net_device *dev) reg = readl(&aup->mac->control); reg &= ~(MAC_RX_ENABLE | MAC_TX_ENABLE); writel(reg, &aup->mac->control); - au_sync_delay(10); + wmb(); /* drain writebuffer */ + mdelay(10); } static void au1000_enable_rx_tx(struct net_device *dev) @@ -286,7 +407,8 @@ static void au1000_enable_rx_tx(struct net_device *dev) reg = readl(&aup->mac->control); reg |= (MAC_RX_ENABLE | MAC_TX_ENABLE); writel(reg, &aup->mac->control); - au_sync_delay(10); + wmb(); /* drain writebuffer */ + mdelay(10); } static void @@ -336,7 +458,8 @@ au1000_adjust_link(struct net_device *dev) reg |= MAC_DISABLE_RX_OWN; } writel(reg, &aup->mac->control); - au_sync_delay(1); + wmb(); /* drain writebuffer */ + mdelay(1); au1000_enable_rx_tx(dev); aup->old_duplex = phydev->duplex; @@ -500,9 +623,11 @@ static void au1000_reset_mac_unlocked(struct net_device *dev) au1000_hard_stop(dev); writel(MAC_EN_CLOCK_ENABLE, aup->enable); - au_sync_delay(2); + wmb(); /* drain writebuffer */ + mdelay(2); writel(0, aup->enable); - au_sync_delay(2); + wmb(); /* drain writebuffer */ + mdelay(2); aup->tx_full = 0; for (i = 0; i < NUM_RX_DMA; i++) { @@ -652,7 +777,7 @@ static int au1000_init(struct net_device *dev) for (i = 0; i < NUM_RX_DMA; i++) aup->rx_dma_ring[i]->buff_stat |= RX_DMA_ENABLE; - au_sync(); + wmb(); /* drain writebuffer */ control = MAC_RX_ENABLE | MAC_TX_ENABLE; #ifndef CONFIG_CPU_LITTLE_ENDIAN @@ -669,7 +794,7 @@ static int au1000_init(struct net_device *dev) writel(control, &aup->mac->control); writel(0x8100, &aup->mac->vlan1_tag); /* activate vlan support */ - au_sync(); + wmb(); /* drain writebuffer */ spin_unlock_irqrestore(&aup->lock, flags); return 0; @@ -760,7 +885,7 @@ static int au1000_rx(struct net_device *dev) } prxd->buff_stat = (u32)(pDB->dma_addr | RX_DMA_ENABLE); aup->rx_head = (aup->rx_head + 1) & (NUM_RX_DMA - 1); - au_sync(); + wmb(); /* drain writebuffer */ /* next descriptor */ prxd = aup->rx_dma_ring[aup->rx_head]; @@ -808,7 +933,7 @@ static void au1000_tx_ack(struct net_device *dev) au1000_update_tx_stats(dev, ptxd->status); ptxd->buff_stat &= ~TX_T_DONE; ptxd->len = 0; - au_sync(); + wmb(); /* drain writebuffer */ aup->tx_tail = (aup->tx_tail + 1) & (NUM_TX_DMA - 1); ptxd = aup->tx_dma_ring[aup->tx_tail]; @@ -939,7 +1064,7 @@ static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev) ps->tx_bytes += ptxd->len; ptxd->buff_stat = pDB->dma_addr | TX_DMA_ENABLE; - au_sync(); + wmb(); /* drain writebuffer */ dev_kfree_skb(skb); aup->tx_head = (aup->tx_head + 1) & (NUM_TX_DMA - 1); return NETDEV_TX_OK; diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c index e7cc9174e364..4a8fdc4721d5 100644 --- a/drivers/net/ethernet/amd/pcnet32.c +++ b/drivers/net/ethernet/amd/pcnet32.c @@ -481,37 +481,32 @@ static void pcnet32_realloc_tx_ring(struct net_device *dev, dma_addr_t *new_dma_addr_list; struct pcnet32_tx_head *new_tx_ring; struct sk_buff **new_skb_list; + unsigned int entries = BIT(size); pcnet32_purge_tx_ring(dev); - new_tx_ring = pci_alloc_consistent(lp->pci_dev, - sizeof(struct pcnet32_tx_head) * - (1 << size), - &new_ring_dma_addr); - if (new_tx_ring == NULL) { - netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + new_tx_ring = + pci_zalloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_tx_head) * entries, + &new_ring_dma_addr); + if (new_tx_ring == NULL) return; - } - memset(new_tx_ring, 0, sizeof(struct pcnet32_tx_head) * (1 << size)); - new_dma_addr_list = kcalloc(1 << size, sizeof(dma_addr_t), - GFP_ATOMIC); + new_dma_addr_list = kcalloc(entries, sizeof(dma_addr_t), GFP_ATOMIC); if (!new_dma_addr_list) goto free_new_tx_ring; - new_skb_list = kcalloc(1 << size, sizeof(struct sk_buff *), - GFP_ATOMIC); + new_skb_list = kcalloc(entries, sizeof(struct sk_buff *), GFP_ATOMIC); if (!new_skb_list) goto free_new_lists; kfree(lp->tx_skbuff); kfree(lp->tx_dma_addr); pci_free_consistent(lp->pci_dev, - sizeof(struct pcnet32_tx_head) * - lp->tx_ring_size, lp->tx_ring, - lp->tx_ring_dma_addr); + sizeof(struct pcnet32_tx_head) * lp->tx_ring_size, + lp->tx_ring, lp->tx_ring_dma_addr); - lp->tx_ring_size = (1 << size); + lp->tx_ring_size = entries; lp->tx_mod_mask = lp->tx_ring_size - 1; lp->tx_len_bits = (size << 12); lp->tx_ring = new_tx_ring; @@ -524,8 +519,7 @@ free_new_lists: kfree(new_dma_addr_list); free_new_tx_ring: pci_free_consistent(lp->pci_dev, - sizeof(struct pcnet32_tx_head) * - (1 << size), + sizeof(struct pcnet32_tx_head) * entries, new_tx_ring, new_ring_dma_addr); } @@ -549,17 +543,14 @@ static void pcnet32_realloc_rx_ring(struct net_device *dev, struct pcnet32_rx_head *new_rx_ring; struct sk_buff **new_skb_list; int new, overlap; - unsigned int entries = 1 << size; + unsigned int entries = BIT(size); - new_rx_ring = pci_alloc_consistent(lp->pci_dev, - sizeof(struct pcnet32_rx_head) * - entries, - &new_ring_dma_addr); - if (new_rx_ring == NULL) { - netif_err(lp, drv, dev, "Consistent memory allocation failed\n"); + new_rx_ring = + pci_zalloc_consistent(lp->pci_dev, + sizeof(struct pcnet32_rx_head) * entries, + &new_ring_dma_addr); + if (new_rx_ring == NULL) return; - } - memset(new_rx_ring, 0, sizeof(struct pcnet32_rx_head) * entries); new_dma_addr_list = kcalloc(entries, sizeof(dma_addr_t), GFP_ATOMIC); if (!new_dma_addr_list) diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c index 4345332533ad..316e0c3fe048 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c @@ -831,17 +831,14 @@ static int atl1e_setup_ring_resources(struct atl1e_adapter *adapter) /* real ring DMA buffer */ size = adapter->ring_size; - adapter->ring_vir_addr = pci_alloc_consistent(pdev, - adapter->ring_size, &adapter->ring_dma); - + adapter->ring_vir_addr = pci_zalloc_consistent(pdev, adapter->ring_size, + &adapter->ring_dma); if (adapter->ring_vir_addr == NULL) { netdev_err(adapter->netdev, "pci_alloc_consistent failed, size = D%d\n", size); return -ENOMEM; } - memset(adapter->ring_vir_addr, 0, adapter->ring_size); - rx_page_desc = rx_ring->rx_page_desc; /* Init TPD Ring */ diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index a3dd5dc64f4c..4296b3d26f02 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -14093,8 +14093,9 @@ static struct rtnl_link_stats64 *tg3_get_stats64(struct net_device *dev, spin_lock_bh(&tp->lock); if (!tp->hw_stats) { + *stats = tp->net_stats_prev; spin_unlock_bh(&tp->lock); - return &tp->net_stats_prev; + return stats; } tg3_get_nstats(tp, stats); diff --git a/drivers/net/ethernet/cisco/enic/vnic_dev.c b/drivers/net/ethernet/cisco/enic/vnic_dev.c index 5abc496bcf29..37472ce4fac3 100644 --- a/drivers/net/ethernet/cisco/enic/vnic_dev.c +++ b/drivers/net/ethernet/cisco/enic/vnic_dev.c @@ -432,14 +432,12 @@ int vnic_dev_fw_info(struct vnic_dev *vdev, int err = 0; if (!vdev->fw_info) { - vdev->fw_info = pci_alloc_consistent(vdev->pdev, - sizeof(struct vnic_devcmd_fw_info), - &vdev->fw_info_pa); + vdev->fw_info = pci_zalloc_consistent(vdev->pdev, + sizeof(struct vnic_devcmd_fw_info), + &vdev->fw_info_pa); if (!vdev->fw_info) return -ENOMEM; - memset(vdev->fw_info, 0, sizeof(struct vnic_devcmd_fw_info)); - a0 = vdev->fw_info_pa; a1 = sizeof(struct vnic_devcmd_fw_info); diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c index fc5413488496..1eedfba2ad3c 100644 --- a/drivers/net/ethernet/freescale/fs_enet/mac-fec.c +++ b/drivers/net/ethernet/freescale/fs_enet/mac-fec.c @@ -41,7 +41,6 @@ #ifdef CONFIG_8xx #include <asm/8xx_immap.h> #include <asm/pgtable.h> -#include <asm/mpc8xx.h> #include <asm/cpm1.h> #endif diff --git a/drivers/net/ethernet/freescale/fs_enet/mac-scc.c b/drivers/net/ethernet/freescale/fs_enet/mac-scc.c index b4bf02f57d43..90b3b19b7cd3 100644 --- a/drivers/net/ethernet/freescale/fs_enet/mac-scc.c +++ b/drivers/net/ethernet/freescale/fs_enet/mac-scc.c @@ -40,7 +40,6 @@ #ifdef CONFIG_8xx #include <asm/8xx_immap.h> #include <asm/pgtable.h> -#include <asm/mpc8xx.h> #include <asm/cpm1.h> #endif diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 69693384b58c..59915144aabb 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -1622,11 +1622,10 @@ static int sky2_alloc_buffers(struct sky2_port *sky2) if (!sky2->tx_ring) goto nomem; - sky2->rx_le = pci_alloc_consistent(hw->pdev, RX_LE_BYTES, - &sky2->rx_le_map); + sky2->rx_le = pci_zalloc_consistent(hw->pdev, RX_LE_BYTES, + &sky2->rx_le_map); if (!sky2->rx_le) goto nomem; - memset(sky2->rx_le, 0, RX_LE_BYTES); sky2->rx_ring = kcalloc(sky2->rx_pending, sizeof(struct rx_ring_info), GFP_KERNEL); diff --git a/drivers/net/ethernet/micrel/ksz884x.c b/drivers/net/ethernet/micrel/ksz884x.c index 064a48d0c368..cd5f106306d9 100644 --- a/drivers/net/ethernet/micrel/ksz884x.c +++ b/drivers/net/ethernet/micrel/ksz884x.c @@ -4409,14 +4409,13 @@ static int ksz_alloc_desc(struct dev_info *adapter) DESC_ALIGNMENT; adapter->desc_pool.alloc_virt = - pci_alloc_consistent( - adapter->pdev, adapter->desc_pool.alloc_size, - &adapter->desc_pool.dma_addr); + pci_zalloc_consistent(adapter->pdev, + adapter->desc_pool.alloc_size, + &adapter->desc_pool.dma_addr); if (adapter->desc_pool.alloc_virt == NULL) { adapter->desc_pool.alloc_size = 0; return 1; } - memset(adapter->desc_pool.alloc_virt, 0, adapter->desc_pool.alloc_size); /* Align to the next cache line boundary. */ offset = (((ulong) adapter->desc_pool.alloc_virt % DESC_ALIGNMENT) ? diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c index 69c26f04d8ce..679db026f4be 100644 --- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c +++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c @@ -873,6 +873,10 @@ static int myri10ge_dma_test(struct myri10ge_priv *mgp, int test_type) return -ENOMEM; dmatest_bus = pci_map_page(mgp->pdev, dmatest_page, 0, PAGE_SIZE, DMA_BIDIRECTIONAL); + if (unlikely(pci_dma_mapping_error(mgp->pdev, dmatest_bus))) { + __free_page(dmatest_page); + return -ENOMEM; + } /* Run a small DMA test. * The magic multipliers to the length tell the firmware @@ -1294,6 +1298,7 @@ myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, int bytes, int watchdog) { struct page *page; + dma_addr_t bus; int idx; #if MYRI10GE_ALLOC_SIZE > 4096 int end_offset; @@ -1318,11 +1323,21 @@ myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx, rx->watchdog_needed = 1; return; } + + bus = pci_map_page(mgp->pdev, page, 0, + MYRI10GE_ALLOC_SIZE, + PCI_DMA_FROMDEVICE); + if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) { + __free_pages(page, MYRI10GE_ALLOC_ORDER); + if (rx->fill_cnt - rx->cnt < 16) + rx->watchdog_needed = 1; + return; + } + rx->page = page; rx->page_offset = 0; - rx->bus = pci_map_page(mgp->pdev, page, 0, - MYRI10GE_ALLOC_SIZE, - PCI_DMA_FROMDEVICE); + rx->bus = bus; + } rx->info[idx].page = rx->page; rx->info[idx].page_offset = rx->page_offset; @@ -2764,6 +2779,35 @@ myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src, mb(); } +static void myri10ge_unmap_tx_dma(struct myri10ge_priv *mgp, + struct myri10ge_tx_buf *tx, int idx) +{ + unsigned int len; + int last_idx; + + /* Free any DMA resources we've alloced and clear out the skb slot */ + last_idx = (idx + 1) & tx->mask; + idx = tx->req & tx->mask; + do { + len = dma_unmap_len(&tx->info[idx], len); + if (len) { + if (tx->info[idx].skb != NULL) + pci_unmap_single(mgp->pdev, + dma_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + else + pci_unmap_page(mgp->pdev, + dma_unmap_addr(&tx->info[idx], + bus), len, + PCI_DMA_TODEVICE); + dma_unmap_len_set(&tx->info[idx], len, 0); + tx->info[idx].skb = NULL; + } + idx = (idx + 1) & tx->mask; + } while (idx != last_idx); +} + /* * Transmit a packet. We need to split the packet so that a single * segment does not cross myri10ge->tx_boundary, so this makes segment @@ -2787,7 +2831,7 @@ static netdev_tx_t myri10ge_xmit(struct sk_buff *skb, u32 low; __be32 high_swapped; unsigned int len; - int idx, last_idx, avail, frag_cnt, frag_idx, count, mss, max_segments; + int idx, avail, frag_cnt, frag_idx, count, mss, max_segments; u16 pseudo_hdr_offset, cksum_offset, queue; int cum_len, seglen, boundary, rdma_count; u8 flags, odd_flag; @@ -2884,9 +2928,12 @@ again: /* map the skb for DMA */ len = skb_headlen(skb); + bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); + if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) + goto drop; + idx = tx->req & tx->mask; tx->info[idx].skb = skb; - bus = pci_map_single(mgp->pdev, skb->data, len, PCI_DMA_TODEVICE); dma_unmap_addr_set(&tx->info[idx], bus, bus); dma_unmap_len_set(&tx->info[idx], len, len); @@ -2985,12 +3032,16 @@ again: break; /* map next fragment for DMA */ - idx = (count + tx->req) & tx->mask; frag = &skb_shinfo(skb)->frags[frag_idx]; frag_idx++; len = skb_frag_size(frag); bus = skb_frag_dma_map(&mgp->pdev->dev, frag, 0, len, DMA_TO_DEVICE); + if (unlikely(pci_dma_mapping_error(mgp->pdev, bus))) { + myri10ge_unmap_tx_dma(mgp, tx, idx); + goto drop; + } + idx = (count + tx->req) & tx->mask; dma_unmap_addr_set(&tx->info[idx], bus, bus); dma_unmap_len_set(&tx->info[idx], len, len); } @@ -3021,31 +3072,8 @@ again: return NETDEV_TX_OK; abort_linearize: - /* Free any DMA resources we've alloced and clear out the skb - * slot so as to not trip up assertions, and to avoid a - * double-free if linearizing fails */ + myri10ge_unmap_tx_dma(mgp, tx, idx); - last_idx = (idx + 1) & tx->mask; - idx = tx->req & tx->mask; - tx->info[idx].skb = NULL; - do { - len = dma_unmap_len(&tx->info[idx], len); - if (len) { - if (tx->info[idx].skb != NULL) - pci_unmap_single(mgp->pdev, - dma_unmap_addr(&tx->info[idx], - bus), len, - PCI_DMA_TODEVICE); - else - pci_unmap_page(mgp->pdev, - dma_unmap_addr(&tx->info[idx], - bus), len, - PCI_DMA_TODEVICE); - dma_unmap_len_set(&tx->info[idx], len, 0); - tx->info[idx].skb = NULL; - } - idx = (idx + 1) & tx->mask; - } while (idx != last_idx); if (skb_is_gso(skb)) { netdev_err(mgp->dev, "TSO but wanted to linearize?!?!?\n"); goto drop; diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c index 6f6be57f4690..b8d5270359cd 100644 --- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c +++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_ctx.c @@ -129,14 +129,12 @@ netxen_get_minidump_template(struct netxen_adapter *adapter) return NX_RCODE_INVALID_ARGS; } - addr = pci_alloc_consistent(adapter->pdev, size, &md_template_addr); - + addr = pci_zalloc_consistent(adapter->pdev, size, &md_template_addr); if (!addr) { dev_err(&adapter->pdev->dev, "Unable to allocate dmable memory for template.\n"); return -ENOMEM; } - memset(addr, 0, size); memset(&cmd, 0, sizeof(cmd)); memset(&cmd.rsp, 1, sizeof(struct _cdrp_cmd)); cmd.req.cmd = NX_CDRP_CMD_GET_TEMP_HDR; diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c index b40050e03a56..d836ace52277 100644 --- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c +++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c @@ -2727,23 +2727,22 @@ static void ql_free_shadow_space(struct ql_adapter *qdev) static int ql_alloc_shadow_space(struct ql_adapter *qdev) { qdev->rx_ring_shadow_reg_area = - pci_alloc_consistent(qdev->pdev, - PAGE_SIZE, &qdev->rx_ring_shadow_reg_dma); + pci_zalloc_consistent(qdev->pdev, PAGE_SIZE, + &qdev->rx_ring_shadow_reg_dma); if (qdev->rx_ring_shadow_reg_area == NULL) { netif_err(qdev, ifup, qdev->ndev, "Allocation of RX shadow space failed.\n"); return -ENOMEM; } - memset(qdev->rx_ring_shadow_reg_area, 0, PAGE_SIZE); + qdev->tx_ring_shadow_reg_area = - pci_alloc_consistent(qdev->pdev, PAGE_SIZE, - &qdev->tx_ring_shadow_reg_dma); + pci_zalloc_consistent(qdev->pdev, PAGE_SIZE, + &qdev->tx_ring_shadow_reg_dma); if (qdev->tx_ring_shadow_reg_area == NULL) { netif_err(qdev, ifup, qdev->ndev, "Allocation of TX shadow space failed.\n"); goto err_wqp_sh_area; } - memset(qdev->tx_ring_shadow_reg_area, 0, PAGE_SIZE); return 0; err_wqp_sh_area: diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index d813bfb1a847..23c89ab5a6ad 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -32,6 +32,11 @@ MODULE_DESCRIPTION("Sun LDOM virtual network driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_MODULE_VERSION); +/* Heuristic for the number of times to exponentially backoff and + * retry sending an LDC trigger when EAGAIN is encountered + */ +#define VNET_MAX_RETRIES 10 + /* Ordered from largest major to lowest */ static struct vio_version vnet_versions[] = { { .major = 1, .minor = 0 }, @@ -260,6 +265,7 @@ static int vnet_send_ack(struct vnet_port *port, struct vio_dring_state *dr, .state = vio_dring_state, }; int err, delay; + int retries = 0; hdr.seq = dr->snd_nxt; delay = 1; @@ -272,6 +278,13 @@ static int vnet_send_ack(struct vnet_port *port, struct vio_dring_state *dr, udelay(delay); if ((delay <<= 1) > 128) delay = 128; + if (retries++ > VNET_MAX_RETRIES) { + pr_info("ECONNRESET %x:%x:%x:%x:%x:%x\n", + port->raddr[0], port->raddr[1], + port->raddr[2], port->raddr[3], + port->raddr[4], port->raddr[5]); + err = -ECONNRESET; + } } while (err == -EAGAIN); return err; @@ -475,8 +488,9 @@ static int handle_mcast(struct vnet_port *port, void *msgbuf) return 0; } -static void maybe_tx_wakeup(struct vnet *vp) +static void maybe_tx_wakeup(unsigned long param) { + struct vnet *vp = (struct vnet *)param; struct net_device *dev = vp->dev; netif_tx_lock(dev); @@ -573,8 +587,13 @@ static void vnet_event(void *arg, int event) break; } spin_unlock(&vio->lock); + /* Kick off a tasklet to wake the queue. We cannot call + * maybe_tx_wakeup directly here because we could deadlock on + * netif_tx_lock() with dev_watchdog() + */ if (unlikely(tx_wakeup && err != -ECONNRESET)) - maybe_tx_wakeup(port->vp); + tasklet_schedule(&port->vp->vnet_tx_wakeup); + local_irq_restore(flags); } @@ -593,6 +612,7 @@ static int __vnet_tx_trigger(struct vnet_port *port) .end_idx = (u32) -1, }; int err, delay; + int retries = 0; hdr.seq = dr->snd_nxt; delay = 1; @@ -605,6 +625,8 @@ static int __vnet_tx_trigger(struct vnet_port *port) udelay(delay); if ((delay <<= 1) > 128) delay = 128; + if (retries++ > VNET_MAX_RETRIES) + break; } while (err == -EAGAIN); return err; @@ -691,7 +713,15 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev) memset(tx_buf+VNET_PACKET_SKIP+skb->len, 0, len - skb->len); } - d->hdr.ack = VIO_ACK_ENABLE; + /* We don't rely on the ACKs to free the skb in vnet_start_xmit(), + * thus it is safe to not set VIO_ACK_ENABLE for each transmission: + * the protocol itself does not require it as long as the peer + * sends a VIO_SUBTYPE_ACK for VIO_DRING_STOPPED. + * + * An ACK for every packet in the ring is expensive as the + * sending of LDC messages is slow and affects performance. + */ + d->hdr.ack = VIO_ACK_DISABLE; d->size = len; d->ncookies = port->tx_bufs[dr->prod].ncookies; for (i = 0; i < d->ncookies; i++) @@ -1046,6 +1076,7 @@ static struct vnet *vnet_new(const u64 *local_mac) vp = netdev_priv(dev); spin_lock_init(&vp->lock); + tasklet_init(&vp->vnet_tx_wakeup, maybe_tx_wakeup, (unsigned long)vp); vp->dev = dev; INIT_LIST_HEAD(&vp->port_list); @@ -1105,6 +1136,7 @@ static void vnet_cleanup(void) vp = list_first_entry(&vnet_list, struct vnet, list); list_del(&vp->list); dev = vp->dev; + tasklet_kill(&vp->vnet_tx_wakeup); /* vio_unregister_driver() should have cleaned up port_list */ BUG_ON(!list_empty(&vp->port_list)); unregister_netdev(dev); diff --git a/drivers/net/ethernet/sun/sunvnet.h b/drivers/net/ethernet/sun/sunvnet.h index d347a5bf24b0..de5c2c64996f 100644 --- a/drivers/net/ethernet/sun/sunvnet.h +++ b/drivers/net/ethernet/sun/sunvnet.h @@ -1,6 +1,8 @@ #ifndef _SUNVNET_H #define _SUNVNET_H +#include <linux/interrupt.h> + #define DESC_NCOOKIES(entry_size) \ ((entry_size) - sizeof(struct vio_net_desc)) @@ -78,6 +80,8 @@ struct vnet { struct list_head list; u64 local_mac; + + struct tasklet_struct vnet_tx_wakeup; }; #endif /* _SUNVNET_H */ |