/*
* Atheros AR71xx built-in ethernet mac driver
*
- * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Based on Atheros' AG7100 driver
#include "ag71xx.h"
-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 "?";
-}
-
-#define AR71XX_PLL_VAL_1000 0x00110000
-#define AR71XX_PLL_VAL_100 0x00001099
-#define AR71XX_PLL_VAL_10 0x00991099
-
-#define AR91XX_PLL_VAL_1000 0x1a000000
-#define AR91XX_PLL_VAL_100 0x13000a44
-#define AR91XX_PLL_VAL_10 0x00441099
-
-static void ag71xx_phy_link_update(struct ag71xx *ag)
-{
- struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
- u32 cfg2;
- u32 ifctl;
- u32 pll;
- u32 fifo5;
- u32 mii_speed;
-
- if (!ag->link) {
- netif_carrier_off(ag->dev);
- if (netif_msg_link(ag))
- 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_BM;
-
- switch (ag->speed) {
- case SPEED_1000:
- mii_speed = MII_CTRL_SPEED_1000;
- cfg2 |= MAC_CFG2_IF_1000;
- pll = pdata->is_ar91xx ? AR91XX_PLL_VAL_1000
- : AR71XX_PLL_VAL_1000;
- fifo5 |= FIFO_CFG5_BM;
- break;
- case SPEED_100:
- mii_speed = MII_CTRL_SPEED_100;
- cfg2 |= MAC_CFG2_IF_10_100;
- ifctl |= MAC_IFCTL_SPEED;
- pll = pdata->is_ar91xx ? AR91XX_PLL_VAL_100
- : AR71XX_PLL_VAL_100;
- break;
- case SPEED_10:
- mii_speed = MII_CTRL_SPEED_10;
- cfg2 |= MAC_CFG2_IF_10_100;
- pll = pdata->is_ar91xx ? AR91XX_PLL_VAL_10
- : AR71XX_PLL_VAL_10;
- break;
- default:
- BUG();
- return;
- }
-
- ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3,
- pdata->is_ar91xx ? 0x780fff : 0x008001ff);
- pdata->set_pll(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);
- if (netif_msg_link(ag))
- 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: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\n",
- ag->dev->name,
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1),
- ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2));
-
- DBG("%s: fifo_cfg3=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\n",
- ag->dev->name,
- 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, mac_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);
ag->speed = phydev->speed;
if (status_change)
- ag71xx_phy_link_update(ag);
+ ag71xx_link_adjust(ag);
spin_unlock_irqrestore(&ag->lock, flags);
}
if (ag->phy_dev) {
phy_start(ag->phy_dev);
} else {
- struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag);
-
- ag->duplex = pdata->duplex;
- ag->speed = pdata->speed;
ag->link = 1;
- ag71xx_phy_link_update(ag);
+ ag71xx_link_adjust(ag);
}
}
if (ag->phy_dev) {
phy_stop(ag->phy_dev);
} else {
- ag->duplex = -1;
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 && pdata->phy_mask) {
- /* 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];
+ if (phydev == NULL)
+ phydev = ag->mii_bus->phy_map[phy_addr];
+ }
- phy_count++;
- }
+ if (!phydev) {
+ printk(KERN_ERR "%s: no PHY found with phy_mask=%08x\n",
+ dev->name, pdata->phy_mask);
+ return -ENODEV;
}
- switch (phy_count) {
- case 1:
- ag->phy_dev = phy_connect(dev, phydev->dev.bus_id,
- &ag71xx_phy_link_adjust, 0, pdata->phy_if_mode);
+ ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev),
+ &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);
- }
+ 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);
+ }
- /* mask with MAC supported features */
- if (pdata->has_gbit)
- phydev->supported &= PHY_GBIT_FEATURES;
- else
- phydev->supported &= PHY_BASIC_FEATURES;
+ /* mask with MAC supported features */
+ if (pdata->has_gbit)
+ phydev->supported &= PHY_GBIT_FEATURES;
+ else
+ phydev->supported &= PHY_BASIC_FEATURES;
- phydev->advertising = phydev->supported;
+ phydev->advertising = phydev->supported;
- 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);
+ 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;
- break;
+ ag->link = 0;
+ ag->speed = 0;
+ ag->duplex = -1;
- default:
- switch (pdata->speed) {
- case SPEED_10:
- case SPEED_100:
- case SPEED_1000:
- break;
- default:
- printk(KERN_ERR "%s: invalid speed specified\n",
- dev->name);
- return -EINVAL;
- }
+ return ret;
+}
- ag->phy_dev = NULL;
- printk(KERN_DEBUG "%s: connected to %d PHYs\n",
- dev->name, phy_count);
- break;
- }
+static int dev_is_class(struct device *dev, void *class)
+{
+ if (dev->class != NULL && !strcmp(dev->class->name, class))
+ return 1;
return 0;
}
+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)
+{
+ 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 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->phy_mask)
+ return ag71xx_phy_connect_multi(ag);
+
+ return ag71xx_phy_connect_fixed(ag);
+}
+
void ag71xx_phy_disconnect(struct ag71xx *ag)
{
if (ag->phy_dev)
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