X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/52696b5d81d91be3b567e67bbc60ecfe125a4716..e018221576d72be038cd4e03e0d7bc0bf39e5341:/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c index b1838d578..d70aaf092 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_phy.c @@ -1,7 +1,7 @@ /* * Atheros AR71xx built-in ethernet mac driver * - * Copyright (C) 2008 Gabor Juhos + * Copyright (C) 2008-2010 Gabor Juhos * Copyright (C) 2008 Imre Kaloz * * Based on Atheros' AG7100 driver @@ -13,146 +13,6 @@ #include "ag71xx.h" -#define PLL_SEC_CONFIG 0x18050004 -#define PLL_ETH0_INT_CLOCK 0x18050010 -#define PLL_ETH1_INT_CLOCK 0x18050014 -#define PLL_ETH_EXT_CLOCK 0x18050018 - -#define ag71xx_pll_shift(_ag) (((_ag)->pdev->id) ? 19 : 17) -#define ag71xx_pll_offset(_ag) (((_ag)->pdev->id) ? PLL_ETH1_INT_CLOCK \ - : PLL_ETH0_INT_CLOCK) - -static void ag71xx_set_pll(struct ag71xx *ag, u32 pll_val) -{ - void __iomem *pll_reg = ioremap_nocache(ag71xx_pll_offset(ag), 4); - void __iomem *pll_cfg = ioremap_nocache(PLL_SEC_CONFIG, 4); - u32 s; - u32 t; - - s = ag71xx_pll_shift(ag); - - t = __raw_readl(pll_cfg); - t &= ~(3 << s); - t |= (2 << s); - __raw_writel(t, pll_cfg); - udelay(100); - - __raw_writel(pll_val, pll_reg); - - t |= (3 << s); - __raw_writel(t, pll_cfg); - udelay(100); - - t &= ~(3 << s); - __raw_writel(t, pll_cfg); - udelay(100); - DBG("%s: pll_reg %#x: %#x\n", ag->dev->name, - (unsigned int)pll_reg, __raw_readl(pll_reg)); - - iounmap(pll_cfg); - iounmap(pll_reg); -} - -static unsigned char *ag71xx_speed_str(struct ag71xx *ag) -{ - switch (ag->speed) { - case SPEED_1000: - return "1000"; - case SPEED_100: - return "100"; - case SPEED_10: - return "10"; - } - - return "?"; -} - -#if 1 -#define PLL_VAL_1000 0x00110000 -#define PLL_VAL_100 0x00001099 -#define PLL_VAL_10 0x00991099 -#else -#define PLL_VAL_1000 0x01111000 -#define PLL_VAL_100 0x09991000 -#define PLL_VAL_10 0x09991999 -#endif - -static void ag71xx_phy_link_update(struct ag71xx *ag) -{ - u32 cfg2; - u32 ifctl; - u32 pll; - u32 fifo5; - u32 mii_speed; - - if (!ag->link) { - netif_carrier_off(ag->dev); - printk(KERN_INFO "%s: link down\n", ag->dev->name); - return; - } - - cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2); - cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX); - cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0; - - ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL); - ifctl &= ~(MAC_IFCTL_SPEED); - - fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5); - fifo5 &= ~FIFO_CFG5_BYTE_PER_CLK; - - switch (ag->speed) { - case SPEED_1000: - mii_speed = MII_CTRL_SPEED_1000; - cfg2 |= MAC_CFG2_IF_1000; - pll = PLL_VAL_1000; - fifo5 |= FIFO_CFG5_BYTE_PER_CLK; - break; - case SPEED_100: - mii_speed = MII_CTRL_SPEED_100; - cfg2 |= MAC_CFG2_IF_10_100; - ifctl |= MAC_IFCTL_SPEED; - pll = PLL_VAL_100; - break; - case SPEED_10: - mii_speed = MII_CTRL_SPEED_10; - cfg2 |= MAC_CFG2_IF_10_100; - pll = PLL_VAL_10; - break; - default: - BUG(); - return; - } - - ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff); - ag71xx_set_pll(ag, pll); - ag71xx_mii_ctrl_set_speed(ag, mii_speed); - - ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2); - ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5); - ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl); - - netif_carrier_on(ag->dev); - printk(KERN_INFO "%s: link up (%sMbps/%s duplex)\n", - ag->dev->name, - ag71xx_speed_str(ag), - (DUPLEX_FULL == ag->duplex) ? "Full" : "Half"); - - DBG("%s: fifo1=%#x, fifo2=%#x, fifo3=%#x, fifo4=%#x, fifo5=%#x\n", - ag->dev->name, - ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1), - ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2), - ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3), - ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4), - ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5)); - - DBG("%s: mac_cfg2=%#x, ifctl=%#x, mii_ctrl=%#x\n", - ag->dev->name, - ag71xx_rr(ag, AG71XX_REG_MAC_CFG2), - ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL), - ag71xx_mii_ctrl_rr(ag)); -} - static void ag71xx_phy_link_adjust(struct net_device *dev) { struct ag71xx *ag = netdev_priv(dev); @@ -169,122 +29,200 @@ static void ag71xx_phy_link_adjust(struct net_device *dev) } } - if (phydev->link != ag->link) { - if (phydev->link) - netif_schedule(dev); - + if (phydev->link != ag->link) status_change = 1; - } ag->link = phydev->link; ag->duplex = phydev->duplex; ag->speed = phydev->speed; if (status_change) - ag71xx_phy_link_update(ag); + ag71xx_link_adjust(ag); spin_unlock_irqrestore(&ag->lock, flags); } void ag71xx_phy_start(struct ag71xx *ag) { + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + if (ag->phy_dev) { phy_start(ag->phy_dev); } else { - ag->duplex = DUPLEX_FULL; - ag->speed = SPEED_100; + if (pdata->has_ar7240_switch) + ag71xx_ar7240_start(ag); ag->link = 1; - ag71xx_phy_link_update(ag); + ag71xx_link_adjust(ag); } } void ag71xx_phy_stop(struct ag71xx *ag) { + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + if (ag->phy_dev) { phy_stop(ag->phy_dev); } else { - ag->duplex = -1; + if (pdata->has_ar7240_switch) + ag71xx_ar7240_stop(ag); ag->link = 0; - ag->speed = 0; - ag71xx_phy_link_update(ag); + ag71xx_link_adjust(ag); } } -int ag71xx_phy_connect(struct ag71xx *ag) +static int ag71xx_phy_connect_fixed(struct ag71xx *ag) +{ + struct net_device *dev = ag->dev; + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + int ret = 0; + + /* use fixed settings */ + switch (pdata->speed) { + case SPEED_10: + case SPEED_100: + case SPEED_1000: + break; + default: + printk(KERN_ERR "%s: invalid speed specified\n", dev->name); + ret = -EINVAL; + break; + } + + printk(KERN_DEBUG "%s: using fixed link parameters\n", dev->name); + + ag->duplex = pdata->duplex; + ag->speed = pdata->speed; + + return ret; +} + +static int ag71xx_phy_connect_multi(struct ag71xx *ag) { struct net_device *dev = ag->dev; struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); struct phy_device *phydev = NULL; - int phy_count = 0; int phy_addr; + int ret = 0; - if (ag->mii_bus) { - /* TODO: use mutex of the mdio bus */ - for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { - if (!(pdata->phy_mask & (1 << phy_addr))) - continue; + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + if (!(pdata->phy_mask & (1 << phy_addr))) + continue; - if (ag->mii_bus->phy_map[phy_addr] == NULL) - continue; + if (ag->mii_bus->phy_map[phy_addr] == NULL) + continue; - DBG("%s: PHY found at %s, uid=%08x\n", - dev->name, - ag->mii_bus->phy_map[phy_addr]->dev.bus_id, - ag->mii_bus->phy_map[phy_addr]->phy_id); + DBG("%s: PHY found at %s, uid=%08x\n", + dev->name, + dev_name(&ag->mii_bus->phy_map[phy_addr]->dev), + ag->mii_bus->phy_map[phy_addr]->phy_id); - if (phydev == NULL) - phydev = ag->mii_bus->phy_map[phy_addr]; - - phy_count++; - } + if (phydev == NULL) + phydev = ag->mii_bus->phy_map[phy_addr]; } - switch (phy_count) { - case 0: - printk(KERN_ERR "%s: no PHY found\n", dev->name); + if (!phydev) { + printk(KERN_ERR "%s: no PHY found with phy_mask=%08x\n", + dev->name, pdata->phy_mask); return -ENODEV; - case 1: - ag->phy_dev = phy_connect(dev, phydev->dev.bus_id, - &ag71xx_phy_link_adjust, 0, pdata->phy_if_mode); - - if (IS_ERR(ag->phy_dev)) { - printk(KERN_ERR "%s: could not connect to PHY at %s\n", - dev->name, phydev->dev.bus_id); - return PTR_ERR(ag->phy_dev); - } + } - /* mask with MAC supported features */ - phydev->supported &= (SUPPORTED_10baseT_Half - | SUPPORTED_10baseT_Full - | SUPPORTED_100baseT_Half - | SUPPORTED_100baseT_Full - | SUPPORTED_Autoneg - | SUPPORTED_MII - | SUPPORTED_TP); + ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev), + &ag71xx_phy_link_adjust, 0, + pdata->phy_if_mode); - phydev->advertising = phydev->supported; + if (IS_ERR(ag->phy_dev)) { + printk(KERN_ERR "%s: could not connect to PHY at %s\n", + dev->name, dev_name(&phydev->dev)); + return PTR_ERR(ag->phy_dev); + } - printk(KERN_DEBUG "%s: connected to PHY at %s " - "[uid=%08x, driver=%s]\n", - dev->name, phydev->dev.bus_id, - phydev->phy_id, phydev->drv->name); + /* mask with MAC supported features */ + if (pdata->has_gbit) + phydev->supported &= PHY_GBIT_FEATURES; + else + phydev->supported &= PHY_BASIC_FEATURES; - ag->link = 0; - ag->speed = 0; - ag->duplex = -1; - break; - default: - ag->phy_dev = NULL; - printk(KERN_DEBUG "%s: connected to multiple PHYs (%d)\n", - dev->name, phy_count); - break; - } + phydev->advertising = phydev->supported; + + printk(KERN_DEBUG "%s: connected to PHY at %s [uid=%08x, driver=%s]\n", + dev->name, dev_name(&phydev->dev), + phydev->phy_id, phydev->drv->name); + + ag->link = 0; + ag->speed = 0; + ag->duplex = -1; + + return ret; +} + +static int dev_is_class(struct device *dev, void *class) +{ + if (dev->class != NULL && !strcmp(dev->class->name, class)) + return 1; return 0; } -void ag71xx_phy_disconnect(struct ag71xx *ag) +static struct device *dev_find_class(struct device *parent, char *class) +{ + if (dev_is_class(parent, class)) { + get_device(parent); + return parent; + } + + return device_find_child(parent, class, dev_is_class); +} + +static struct mii_bus *dev_to_mii_bus(struct device *dev) { - if (ag->phy_dev) + struct device *d; + + d = dev_find_class(dev, "mdio_bus"); + if (d != NULL) { + struct mii_bus *bus; + + bus = to_mii_bus(d); + put_device(d); + + return bus; + } + + return NULL; +} + +int __devinit ag71xx_phy_connect(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev); + if (ag->mii_bus == NULL) { + printk(KERN_ERR "%s: unable to find MII bus on device '%s'\n", + ag->dev->name, dev_name(pdata->mii_bus_dev)); + return -ENODEV; + } + + /* Reset the mdio bus explicitly */ + if (ag->mii_bus->reset) { + mutex_lock(&ag->mii_bus->mdio_lock); + ag->mii_bus->reset(ag->mii_bus); + mutex_unlock(&ag->mii_bus->mdio_lock); + } + + if (pdata->has_ar7240_switch) + return ag71xx_ar7240_init(ag); + + if (pdata->phy_mask) + return ag71xx_phy_connect_multi(ag); + + return ag71xx_phy_connect_fixed(ag); +} + +void __devexit ag71xx_phy_disconnect(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + if (pdata->has_ar7240_switch) + ag71xx_ar7240_cleanup(ag); + else if (ag->phy_dev) phy_disconnect(ag->phy_dev); }