diff options
| -rw-r--r-- | drivers/net/myri10ge/myri10ge.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c index 36be6efc639..f3ef9e3c48c 100644 --- a/drivers/net/myri10ge/myri10ge.c +++ b/drivers/net/myri10ge/myri10ge.c @@ -1928,6 +1928,76 @@ myri10ge_get_frag_header(struct skb_frag_struct *frag, void **mac_hdr, return 0; } +#if 0 +static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice) +{ + struct myri10ge_cmd cmd; + struct myri10ge_slice_state *ss; + int status; + + ss = &mgp->ss[slice]; + cmd.data0 = 0; /* single slice for now */ + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SEND_OFFSET, &cmd, 0); + ss->tx.lanai = (struct mcp_kreq_ether_send __iomem *) + (mgp->sram + cmd.data0); + + cmd.data0 = slice; + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_SMALL_RX_OFFSET, + &cmd, 0); + ss->rx_small.lanai = (struct mcp_kreq_ether_recv __iomem *) + (mgp->sram + cmd.data0); + + cmd.data0 = slice; + status |= myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_BIG_RX_OFFSET, &cmd, 0); + ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *) + (mgp->sram + cmd.data0); + + if (myri10ge_wcfifo && mgp->wc_enabled) { + ss->tx.wc_fifo = (u8 __iomem *) + mgp->sram + MXGEFW_ETH_SEND_4 + 64 * slice; + ss->rx_small.wc_fifo = (u8 __iomem *) + mgp->sram + MXGEFW_ETH_RECV_SMALL + 64 * slice; + ss->rx_big.wc_fifo = (u8 __iomem *) + mgp->sram + MXGEFW_ETH_RECV_BIG + 64 * slice; + } else { + ss->tx.wc_fifo = NULL; + ss->rx_small.wc_fifo = NULL; + ss->rx_big.wc_fifo = NULL; + } + return status; + +} + +static int myri10ge_set_stats(struct myri10ge_priv *mgp, int slice) +{ + struct myri10ge_cmd cmd; + struct myri10ge_slice_state *ss; + int status; + + ss = &mgp->ss[slice]; + cmd.data0 = MYRI10GE_LOWPART_TO_U32(ss->fw_stats_bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(ss->fw_stats_bus); + cmd.data2 = sizeof(struct mcp_irq_data); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_STATS_DMA_V2, &cmd, 0); + if (status == -ENOSYS) { + dma_addr_t bus = ss->fw_stats_bus; + if (slice != 0) + return -EINVAL; + bus += offsetof(struct mcp_irq_data, send_done_count); + cmd.data0 = MYRI10GE_LOWPART_TO_U32(bus); + cmd.data1 = MYRI10GE_HIGHPART_TO_U32(bus); + status = myri10ge_send_cmd(mgp, + MXGEFW_CMD_SET_STATS_DMA_OBSOLETE, + &cmd, 0); + /* Firmware cannot support multicast without STATS_DMA_V2 */ + mgp->fw_multicast_support = 0; + } else { + mgp->fw_multicast_support = 1; + } + return 0; +} +#endif + static int myri10ge_open(struct net_device *dev) { struct myri10ge_priv *mgp = netdev_priv(dev); @@ -3106,6 +3176,192 @@ static void myri10ge_watchdog_timer(unsigned long arg) mgp->watchdog_pause = rx_pause_cnt; } +#if 0 +static void myri10ge_free_slices(struct myri10ge_priv *mgp) +{ + struct myri10ge_slice_state *ss; + struct pci_dev *pdev = mgp->pdev; + size_t bytes; + int i; + + if (mgp->ss == NULL) + return; + + for (i = 0; i < mgp->num_slices; i++) { + ss = &mgp->ss[i]; + if (ss->rx_done.entry != NULL) { + bytes = mgp->max_intr_slots * + sizeof(*ss->rx_done.entry); + dma_free_coherent(&pdev->dev, bytes, + ss->rx_done.entry, ss->rx_done.bus); + ss->rx_done.entry = NULL; + } + if (ss->fw_stats != NULL) { + bytes = sizeof(*ss->fw_stats); + dma_free_coherent(&pdev->dev, bytes, + ss->fw_stats, ss->fw_stats_bus); + ss->fw_stats = NULL; + } + } + kfree(mgp->ss); + mgp->ss = NULL; +} + +static int myri10ge_alloc_slices(struct myri10ge_priv *mgp) +{ + struct myri10ge_slice_state *ss; + struct pci_dev *pdev = mgp->pdev; + size_t bytes; + int i; + + bytes = sizeof(*mgp->ss) * mgp->num_slices; + mgp->ss = kzalloc(bytes, GFP_KERNEL); + if (mgp->ss == NULL) { + return -ENOMEM; + } + + for (i = 0; i < mgp->num_slices; i++) { + ss = &mgp->ss[i]; + bytes = mgp->max_intr_slots * sizeof(*ss->rx_done.entry); + ss->rx_done.entry = dma_alloc_coherent(&pdev->dev, bytes, + &ss->rx_done.bus, + GFP_KERNEL); + if (ss->rx_done.entry == NULL) + goto abort; + memset(ss->rx_done.entry, 0, bytes); + bytes = sizeof(*ss->fw_stats); + ss->fw_stats = dma_alloc_coherent(&pdev->dev, bytes, + &ss->fw_stats_bus, + GFP_KERNEL); + if (ss->fw_stats == NULL) + goto abort; + ss->mgp = mgp; + ss->dev = mgp->dev; + netif_napi_add(ss->dev, &ss->napi, myri10ge_poll, + myri10ge_napi_weight); + } + return 0; +abort: + myri10ge_free_slices(mgp); + return -ENOMEM; +} + +/* + * This function determines the number of slices supported. + * The number slices is the minumum of the number of CPUS, + * the number of MSI-X irqs supported, the number of slices + * supported by the firmware + */ +static void myri10ge_probe_slices(struct myri10ge_priv *mgp) +{ + struct myri10ge_cmd cmd; + struct pci_dev *pdev = mgp->pdev; + char *old_fw; + int i, status, ncpus, msix_cap; + + mgp->num_slices = 1; + msix_cap = pci_find_capability(pdev, PCI_CAP_ID_MSIX); + ncpus = num_online_cpus(); + + if (myri10ge_max_slices == 1 || msix_cap == 0 || + (myri10ge_max_slices == -1 && ncpus < 2)) + return; + + /* try to load the slice aware rss firmware */ + old_fw = mgp->fw_name; + if (old_fw == myri10ge_fw_aligned) + mgp->fw_name = myri10ge_fw_rss_aligned; + else + mgp->fw_name = myri10ge_fw_rss_unaligned; + status = myri10ge_load_firmware(mgp, 0); + if (status != 0) { + dev_info(&pdev->dev, "Rss firmware not found\n"); + return; + } + + /* hit the board with a reset to ensure it is alive */ + memset(&cmd, 0, sizeof(cmd)); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_RESET, &cmd, 0); + if (status != 0) { + dev_err(&mgp->pdev->dev, "failed reset\n"); + goto abort_with_fw; + return; + } + + mgp->max_intr_slots = cmd.data0 / sizeof(struct mcp_slot); + + /* tell it the size of the interrupt queues */ + cmd.data0 = mgp->max_intr_slots * sizeof(struct mcp_slot); + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_SET_INTRQ_SIZE, &cmd, 0); + if (status != 0) { + dev_err(&mgp->pdev->dev, "failed MXGEFW_CMD_SET_INTRQ_SIZE\n"); + goto abort_with_fw; + } + + /* ask the maximum number of slices it supports */ + status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_RSS_QUEUES, &cmd, 0); + if (status != 0) + goto abort_with_fw; + else + mgp->num_slices = cmd.data0; + + /* Only allow multiple slices if MSI-X is usable */ + if (!myri10ge_msi) { + goto abort_with_fw; + } + + /* if the admin did not specify a limit to how many + * slices we should use, cap it automatically to the + * number of CPUs currently online */ + if (myri10ge_max_slices == -1) + myri10ge_max_slices = ncpus; + + if (mgp->num_slices > myri10ge_max_slices) + mgp->num_slices = myri10ge_max_slices; + + /* Now try to allocate as many MSI-X vectors as we have + * slices. We give up on MSI-X if we can only get a single + * vector. */ + + mgp->msix_vectors = kzalloc(mgp->num_slices * + sizeof(*mgp->msix_vectors), GFP_KERNEL); + if (mgp->msix_vectors == NULL) + goto disable_msix; + for (i = 0; i < mgp->num_slices; i++) { + mgp->msix_vectors[i].entry = i; + } + + while (mgp->num_slices > 1) { + /* make sure it is a power of two */ + while (!is_power_of_2(mgp->num_slices)) + mgp->num_slices--; + if (mgp->num_slices == 1) + goto disable_msix; + status = pci_enable_msix(pdev, mgp->msix_vectors, + mgp->num_slices); + if (status == 0) { + pci_disable_msix(pdev); + return; + } + if (status > 0) + mgp->num_slices = status; + else + goto disable_msix; + } + +disable_msix: + if (mgp->msix_vectors != NULL) { + kfree(mgp->msix_vectors); + mgp->msix_vectors = NULL; + } + +abort_with_fw: + mgp->num_slices = 1; + mgp->fw_name = old_fw; + myri10ge_load_firmware(mgp, 0); +} +#endif + static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct net_device *netdev; |