diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-10-20 00:10:27 -0300 |
commit | d0b2f91bede3bd5e3d24dd6803e56eee959c1797 (patch) | |
tree | 7fee4ab0509879c373c4f2cbd5b8a5be5b4041ee /drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | |
parent | e914f8eb445e8f74b00303c19c2ffceaedd16a05 (diff) |
Linux-libre 4.8.2-gnupck-4.8.2-gnu
Diffstat (limited to 'drivers/net/ethernet/apm/xgene/xgene_enet_hw.c')
-rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 257 |
1 files changed, 142 insertions, 115 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index 2f5638f7f..18bb9556d 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -381,59 +381,6 @@ static void xgene_enet_rd_mcx_mac(struct xgene_enet_pdata *pdata, rd_addr); } -static int xgene_mii_phy_write(struct xgene_enet_pdata *pdata, int phy_id, - u32 reg, u16 data) -{ - u32 addr = 0, wr_data = 0; - u32 done; - u8 wait = 10; - - PHY_ADDR_SET(&addr, phy_id); - REG_ADDR_SET(&addr, reg); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_ADDRESS_ADDR, addr); - - PHY_CONTROL_SET(&wr_data, data); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_CONTROL_ADDR, wr_data); - do { - usleep_range(5, 10); - xgene_enet_rd_mcx_mac(pdata, MII_MGMT_INDICATORS_ADDR, &done); - } while ((done & BUSY_MASK) && wait--); - - if (done & BUSY_MASK) { - netdev_err(pdata->ndev, "MII_MGMT write failed\n"); - return -EBUSY; - } - - return 0; -} - -static int xgene_mii_phy_read(struct xgene_enet_pdata *pdata, - u8 phy_id, u32 reg) -{ - u32 addr = 0; - u32 data, done; - u8 wait = 10; - - PHY_ADDR_SET(&addr, phy_id); - REG_ADDR_SET(&addr, reg); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_ADDRESS_ADDR, addr); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_COMMAND_ADDR, READ_CYCLE_MASK); - do { - usleep_range(5, 10); - xgene_enet_rd_mcx_mac(pdata, MII_MGMT_INDICATORS_ADDR, &done); - } while ((done & BUSY_MASK) && wait--); - - if (done & BUSY_MASK) { - netdev_err(pdata->ndev, "MII_MGMT read failed\n"); - return -EBUSY; - } - - xgene_enet_rd_mcx_mac(pdata, MII_MGMT_STATUS_ADDR, &data); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_COMMAND_ADDR, 0); - - return data; -} - static void xgene_gmac_set_mac_addr(struct xgene_enet_pdata *pdata) { u32 addr0, addr1; @@ -512,14 +459,11 @@ static void xgene_enet_configure_clock(struct xgene_enet_pdata *pdata) #endif } -static void xgene_gmac_init(struct xgene_enet_pdata *pdata) +static void xgene_gmac_set_speed(struct xgene_enet_pdata *pdata) { struct device *dev = &pdata->pdev->dev; - u32 value, mc2; - u32 intf_ctl, rgmii; - u32 icm0, icm2; - - xgene_gmac_reset(pdata); + u32 icm0, icm2, mc2; + u32 intf_ctl, rgmii, value; xgene_enet_rd_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, &icm0); xgene_enet_rd_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, &icm2); @@ -564,7 +508,21 @@ static void xgene_gmac_init(struct xgene_enet_pdata *pdata) mc2 |= FULL_DUPLEX2 | PAD_CRC; xgene_enet_wr_mcx_mac(pdata, MAC_CONFIG_2_ADDR, mc2); xgene_enet_wr_mcx_mac(pdata, INTERFACE_CONTROL_ADDR, intf_ctl); + xgene_enet_wr_csr(pdata, RGMII_REG_0_ADDR, rgmii); + xgene_enet_configure_clock(pdata); + + xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, icm0); + xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, icm2); +} + +static void xgene_gmac_init(struct xgene_enet_pdata *pdata) +{ + u32 value; + if (!pdata->mdio_driver) + xgene_gmac_reset(pdata); + + xgene_gmac_set_speed(pdata); xgene_gmac_set_mac_addr(pdata); /* Adjust MDC clock frequency */ @@ -579,15 +537,10 @@ static void xgene_gmac_init(struct xgene_enet_pdata *pdata) /* Rtype should be copied from FP */ xgene_enet_wr_csr(pdata, RSIF_RAM_DBG_REG0_ADDR, 0); - xgene_enet_wr_csr(pdata, RGMII_REG_0_ADDR, rgmii); - xgene_enet_configure_clock(pdata); /* Rx-Tx traffic resume */ xgene_enet_wr_csr(pdata, CFG_LINK_AGGR_RESUME_0_ADDR, TX_PORT0); - xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG0_REG_0_ADDR, icm0); - xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, icm2); - xgene_enet_rd_mcx_csr(pdata, RX_DV_GATE_REG_0_ADDR, &value); value &= ~TX_DV_GATE_EN0; value &= ~RX_DV_GATE_EN0; @@ -671,93 +624,155 @@ bool xgene_ring_mgr_init(struct xgene_enet_pdata *p) static int xgene_enet_reset(struct xgene_enet_pdata *pdata) { - u32 val; + struct device *dev = &pdata->pdev->dev; if (!xgene_ring_mgr_init(pdata)) return -ENODEV; - if (!IS_ERR(pdata->clk)) { + if (pdata->mdio_driver) { + xgene_enet_config_ring_if_assoc(pdata); + return 0; + } + + if (dev->of_node) { clk_prepare_enable(pdata->clk); + udelay(5); clk_disable_unprepare(pdata->clk); + udelay(5); clk_prepare_enable(pdata->clk); - xgene_enet_ecc_init(pdata); + udelay(5); + } else { +#ifdef CONFIG_ACPI + if (acpi_has_method(ACPI_HANDLE(&pdata->pdev->dev), "_RST")) { + acpi_evaluate_object(ACPI_HANDLE(&pdata->pdev->dev), + "_RST", NULL, NULL); + } else if (acpi_has_method(ACPI_HANDLE(&pdata->pdev->dev), + "_INI")) { + acpi_evaluate_object(ACPI_HANDLE(&pdata->pdev->dev), + "_INI", NULL, NULL); + } +#endif } - xgene_enet_config_ring_if_assoc(pdata); - /* Enable auto-incr for scanning */ - xgene_enet_rd_mcx_mac(pdata, MII_MGMT_CONFIG_ADDR, &val); - val |= SCAN_AUTO_INCR; - MGMT_CLOCK_SEL_SET(&val, 1); - xgene_enet_wr_mcx_mac(pdata, MII_MGMT_CONFIG_ADDR, val); + xgene_enet_ecc_init(pdata); + xgene_enet_config_ring_if_assoc(pdata); return 0; } -static void xgene_gport_shutdown(struct xgene_enet_pdata *pdata) +static void xgene_enet_clear(struct xgene_enet_pdata *pdata, + struct xgene_enet_desc_ring *ring) { - if (!IS_ERR(pdata->clk)) - clk_disable_unprepare(pdata->clk); -} + u32 addr, val, data; -static int xgene_enet_mdio_read(struct mii_bus *bus, int mii_id, int regnum) -{ - struct xgene_enet_pdata *pdata = bus->priv; - u32 val; + val = xgene_enet_ring_bufnum(ring->id); - val = xgene_mii_phy_read(pdata, mii_id, regnum); - netdev_dbg(pdata->ndev, "mdio_rd: bus=%d reg=%d val=%x\n", - mii_id, regnum, val); + if (xgene_enet_is_bufpool(ring->id)) { + addr = ENET_CFGSSQMIFPRESET_ADDR; + data = BIT(val - 0x20); + } else { + addr = ENET_CFGSSQMIWQRESET_ADDR; + data = BIT(val); + } - return val; + xgene_enet_wr_ring_if(pdata, addr, data); } -static int xgene_enet_mdio_write(struct mii_bus *bus, int mii_id, int regnum, - u16 val) +static void xgene_gport_shutdown(struct xgene_enet_pdata *pdata) { - struct xgene_enet_pdata *pdata = bus->priv; + struct device *dev = &pdata->pdev->dev; + struct xgene_enet_desc_ring *ring; + u32 pb, val; + int i; + + pb = 0; + for (i = 0; i < pdata->rxq_cnt; i++) { + ring = pdata->rx_ring[i]->buf_pool; + + val = xgene_enet_ring_bufnum(ring->id); + pb |= BIT(val - 0x20); + } + xgene_enet_wr_ring_if(pdata, ENET_CFGSSQMIFPRESET_ADDR, pb); + + pb = 0; + for (i = 0; i < pdata->txq_cnt; i++) { + ring = pdata->tx_ring[i]; + + val = xgene_enet_ring_bufnum(ring->id); + pb |= BIT(val); + } + xgene_enet_wr_ring_if(pdata, ENET_CFGSSQMIWQRESET_ADDR, pb); - netdev_dbg(pdata->ndev, "mdio_wr: bus=%d reg=%d val=%x\n", - mii_id, regnum, val); - return xgene_mii_phy_write(pdata, mii_id, regnum, val); + if (dev->of_node) { + if (!IS_ERR(pdata->clk)) + clk_disable_unprepare(pdata->clk); + } } static void xgene_enet_adjust_link(struct net_device *ndev) { struct xgene_enet_pdata *pdata = netdev_priv(ndev); + const struct xgene_mac_ops *mac_ops = pdata->mac_ops; struct phy_device *phydev = pdata->phy_dev; if (phydev->link) { if (pdata->phy_speed != phydev->speed) { pdata->phy_speed = phydev->speed; - xgene_gmac_init(pdata); - xgene_gmac_rx_enable(pdata); - xgene_gmac_tx_enable(pdata); + mac_ops->set_speed(pdata); + mac_ops->rx_enable(pdata); + mac_ops->tx_enable(pdata); phy_print_status(phydev); } } else { - xgene_gmac_rx_disable(pdata); - xgene_gmac_tx_disable(pdata); + mac_ops->rx_disable(pdata); + mac_ops->tx_disable(pdata); pdata->phy_speed = SPEED_UNKNOWN; phy_print_status(phydev); } } -static int xgene_enet_phy_connect(struct net_device *ndev) +#ifdef CONFIG_ACPI +static struct acpi_device *acpi_phy_find_device(struct device *dev) +{ + struct acpi_reference_args args; + struct fwnode_handle *fw_node; + int status; + + fw_node = acpi_fwnode_handle(ACPI_COMPANION(dev)); + status = acpi_node_get_property_reference(fw_node, "phy-handle", 0, + &args); + if (ACPI_FAILURE(status)) { + dev_dbg(dev, "No matching phy in ACPI table\n"); + return NULL; + } + + return args.adev; +} +#endif + +int xgene_enet_phy_connect(struct net_device *ndev) { struct xgene_enet_pdata *pdata = netdev_priv(ndev); - struct device_node *phy_np; + struct device_node *np; struct phy_device *phy_dev; struct device *dev = &pdata->pdev->dev; + int i; if (dev->of_node) { - phy_np = of_parse_phandle(dev->of_node, "phy-handle", 0); - if (!phy_np) { + for (i = 0 ; i < 2; i++) { + np = of_parse_phandle(dev->of_node, "phy-handle", i); + if (np) + break; + } + + if (!np) { netdev_dbg(ndev, "No phy-handle found in DT\n"); return -ENODEV; } - phy_dev = of_phy_connect(ndev, phy_np, &xgene_enet_adjust_link, + phy_dev = of_phy_connect(ndev, np, &xgene_enet_adjust_link, 0, pdata->phy_mode); + of_node_put(np); if (!phy_dev) { netdev_err(ndev, "Could not connect to PHY\n"); return -ENODEV; @@ -765,6 +780,11 @@ static int xgene_enet_phy_connect(struct net_device *ndev) pdata->phy_dev = phy_dev; } else { +#ifdef CONFIG_ACPI + struct acpi_device *adev = acpi_phy_find_device(dev); + if (adev) + pdata->phy_dev = adev->driver_data; + phy_dev = pdata->phy_dev; if (!phy_dev || @@ -773,6 +793,9 @@ static int xgene_enet_phy_connect(struct net_device *ndev) netdev_err(ndev, "Could not connect to PHY\n"); return -ENODEV; } +#else + return -ENODEV; +#endif } pdata->phy_speed = SPEED_UNKNOWN; @@ -792,8 +815,8 @@ static int xgene_mdiobus_register(struct xgene_enet_pdata *pdata, struct phy_device *phy; struct device_node *child_np; struct device_node *mdio_np = NULL; + u32 phy_addr; int ret; - u32 phy_id; if (dev->of_node) { for_each_child_of_node(dev->of_node, child_np) { @@ -820,21 +843,17 @@ static int xgene_mdiobus_register(struct xgene_enet_pdata *pdata, if (ret) return ret; - ret = device_property_read_u32(dev, "phy-channel", &phy_id); + ret = device_property_read_u32(dev, "phy-channel", &phy_addr); if (ret) - ret = device_property_read_u32(dev, "phy-addr", &phy_id); + ret = device_property_read_u32(dev, "phy-addr", &phy_addr); if (ret) return -EINVAL; - phy = get_phy_device(mdio, phy_id, false); - if (IS_ERR(phy)) + phy = xgene_enet_phy_register(mdio, phy_addr); + if (!phy) return -EIO; - ret = phy_device_register(phy); - if (ret) - phy_device_free(phy); - else - pdata->phy_dev = phy; + pdata->phy_dev = phy; return ret; } @@ -850,13 +869,13 @@ int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata) return -ENOMEM; mdio_bus->name = "APM X-Gene MDIO bus"; - mdio_bus->read = xgene_enet_mdio_read; - mdio_bus->write = xgene_enet_mdio_write; + mdio_bus->read = xgene_mdio_rgmii_read; + mdio_bus->write = xgene_mdio_rgmii_write; snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%s-%s", "xgene-mii", ndev->name); - mdio_bus->priv = pdata; - mdio_bus->parent = &ndev->dev; + mdio_bus->priv = (void __force *)pdata->mcx_mac_addr; + mdio_bus->parent = &pdata->pdev->dev; ret = xgene_mdiobus_register(pdata, mdio_bus); if (ret) { @@ -873,6 +892,12 @@ int xgene_enet_mdio_config(struct xgene_enet_pdata *pdata) return ret; } +void xgene_enet_phy_disconnect(struct xgene_enet_pdata *pdata) +{ + if (pdata->phy_dev) + phy_disconnect(pdata->phy_dev); +} + void xgene_enet_mdio_remove(struct xgene_enet_pdata *pdata) { if (pdata->phy_dev) @@ -890,11 +915,13 @@ const struct xgene_mac_ops xgene_gmac_ops = { .tx_enable = xgene_gmac_tx_enable, .rx_disable = xgene_gmac_rx_disable, .tx_disable = xgene_gmac_tx_disable, + .set_speed = xgene_gmac_set_speed, .set_mac_addr = xgene_gmac_set_mac_addr, }; const struct xgene_port_ops xgene_gport_ops = { .reset = xgene_enet_reset, + .clear = xgene_enet_clear, .cle_bypass = xgene_enet_cle_bypass, .shutdown = xgene_gport_shutdown, }; |