diff options
Diffstat (limited to 'drivers/net/ethernet/apm/xgene/xgene_enet_main.c')
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 111 |
1 files changed, 85 insertions, 26 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 83a50280bb70..44b15373d6b3 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -24,6 +24,10 @@ #include "xgene_enet_sgmac.h" #include "xgene_enet_xgmac.h" +#define RES_ENET_CSR 0 +#define RES_RING_CSR 1 +#define RES_RING_CMD 2 + static void xgene_enet_init_bufpool(struct xgene_enet_desc_ring *buf_pool) { struct xgene_enet_raw_desc16 *raw_desc; @@ -369,6 +373,8 @@ static int xgene_enet_process_ring(struct xgene_enet_desc_ring *ring, if (unlikely(xgene_enet_is_desc_slot_empty(raw_desc))) break; + /* read fpqnum field after dataaddr field */ + dma_rmb(); if (is_rx_desc(raw_desc)) ret = xgene_enet_rx_frame(ring, raw_desc); else @@ -746,6 +752,41 @@ static const struct net_device_ops xgene_ndev_ops = { .ndo_set_mac_address = xgene_enet_set_mac_address, }; +static int xgene_get_mac_address(struct device *dev, + unsigned char *addr) +{ + int ret; + + ret = device_property_read_u8_array(dev, "local-mac-address", addr, 6); + if (ret) + ret = device_property_read_u8_array(dev, "mac-address", + addr, 6); + if (ret) + return -ENODEV; + + return ETH_ALEN; +} + +static int xgene_get_phy_mode(struct device *dev) +{ + int i, ret; + char *modestr; + + ret = device_property_read_string(dev, "phy-connection-type", + (const char **)&modestr); + if (ret) + ret = device_property_read_string(dev, "phy-mode", + (const char **)&modestr); + if (ret) + return -ENODEV; + + for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) { + if (!strcasecmp(modestr, phy_modes(i))) + return i; + } + return -ENODEV; +} + static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) { struct platform_device *pdev; @@ -753,32 +794,45 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) struct device *dev; struct resource *res; void __iomem *base_addr; - const char *mac; int ret; pdev = pdata->pdev; dev = &pdev->dev; ndev = pdata->ndev; - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "enet_csr"); - pdata->base_addr = devm_ioremap_resource(dev, res); - if (IS_ERR(pdata->base_addr)) { + res = platform_get_resource(pdev, IORESOURCE_MEM, RES_ENET_CSR); + if (!res) { + dev_err(dev, "Resource enet_csr not defined\n"); + return -ENODEV; + } + pdata->base_addr = devm_ioremap(dev, res->start, resource_size(res)); + if (!pdata->base_addr) { dev_err(dev, "Unable to retrieve ENET Port CSR region\n"); - return PTR_ERR(pdata->base_addr); + return -ENOMEM; } - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_csr"); - pdata->ring_csr_addr = devm_ioremap_resource(dev, res); - if (IS_ERR(pdata->ring_csr_addr)) { + res = platform_get_resource(pdev, IORESOURCE_MEM, RES_RING_CSR); + if (!res) { + dev_err(dev, "Resource ring_csr not defined\n"); + return -ENODEV; + } + pdata->ring_csr_addr = devm_ioremap(dev, res->start, + resource_size(res)); + if (!pdata->ring_csr_addr) { dev_err(dev, "Unable to retrieve ENET Ring CSR region\n"); - return PTR_ERR(pdata->ring_csr_addr); + return -ENOMEM; } - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ring_cmd"); - pdata->ring_cmd_addr = devm_ioremap_resource(dev, res); - if (IS_ERR(pdata->ring_cmd_addr)) { + res = platform_get_resource(pdev, IORESOURCE_MEM, RES_RING_CMD); + if (!res) { + dev_err(dev, "Resource ring_cmd not defined\n"); + return -ENODEV; + } + pdata->ring_cmd_addr = devm_ioremap(dev, res->start, + resource_size(res)); + if (!pdata->ring_cmd_addr) { dev_err(dev, "Unable to retrieve ENET Ring command region\n"); - return PTR_ERR(pdata->ring_cmd_addr); + return -ENOMEM; } ret = platform_get_irq(pdev, 0); @@ -789,14 +843,12 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) } pdata->rx_irq = ret; - mac = of_get_mac_address(dev->of_node); - if (mac) - memcpy(ndev->dev_addr, mac, ndev->addr_len); - else + if (xgene_get_mac_address(dev, ndev->dev_addr) != ETH_ALEN) eth_hw_addr_random(ndev); + memcpy(ndev->perm_addr, ndev->dev_addr, ndev->addr_len); - pdata->phy_mode = of_get_phy_mode(pdev->dev.of_node); + pdata->phy_mode = xgene_get_phy_mode(dev); if (pdata->phy_mode < 0) { dev_err(dev, "Unable to get phy-connection-type\n"); return pdata->phy_mode; @@ -809,11 +861,9 @@ static int xgene_enet_get_resources(struct xgene_enet_pdata *pdata) } pdata->clk = devm_clk_get(&pdev->dev, NULL); - ret = IS_ERR(pdata->clk); if (IS_ERR(pdata->clk)) { - dev_err(&pdev->dev, "can't get clock\n"); - ret = PTR_ERR(pdata->clk); - return ret; + /* Firmware may have set up the clock already. */ + pdata->clk = NULL; } base_addr = pdata->base_addr; @@ -924,7 +974,7 @@ static int xgene_enet_probe(struct platform_device *pdev) goto err; } - ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); + ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64)); if (ret) { netdev_err(ndev, "No usable DMA configuration\n"); goto err; @@ -972,17 +1022,26 @@ static int xgene_enet_remove(struct platform_device *pdev) return 0; } -static struct of_device_id xgene_enet_match[] = { +#ifdef CONFIG_ACPI +static const struct acpi_device_id xgene_enet_acpi_match[] = { + { "APMC0D05", }, + { } +}; +MODULE_DEVICE_TABLE(acpi, xgene_enet_acpi_match); +#endif + +static struct of_device_id xgene_enet_of_match[] = { {.compatible = "apm,xgene-enet",}, {}, }; -MODULE_DEVICE_TABLE(of, xgene_enet_match); +MODULE_DEVICE_TABLE(of, xgene_enet_of_match); static struct platform_driver xgene_enet_driver = { .driver = { .name = "xgene-enet", - .of_match_table = xgene_enet_match, + .of_match_table = of_match_ptr(xgene_enet_of_match), + .acpi_match_table = ACPI_PTR(xgene_enet_acpi_match), }, .probe = xgene_enet_probe, .remove = xgene_enet_remove, |