[rdc] add r6040 phylib support which allows to use the ip175c switch driver on ar525w

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21521 3c298f89-4303-0410-b956-a3cf2f4a3e73

3 files changed, 471 insertions, 3 deletions

diff --git a/target/linux/rdc/Makefile b/target/linux/rdc/Makefile
index 738af3f02b..391ee68f83 100644
--- a/target/linux/rdc/Makefile
+++ b/target/linux/rdc/Makefile
@@ -16,7 +16,7 @@ LINUX_VERSION:=2.6.32.12
 
 include $(INCLUDE_DIR)/target.mk
 
-DEFAULT_PACKAGES += wpad-mini kmod-r6040 kmod-input-core \
+DEFAULT_PACKAGES += wpad-mini kmod-libphy kmod-r6040 kmod-input-core \
 		    kmod-input-polldev kmod-input-gpio-buttons kmod-button-hotplug \
 		    kmod-rdc321x-wdt
 
diff --git a/target/linux/rdc/patches-2.6.32/014-r6040_phylib_support.patch b/target/linux/rdc/patches-2.6.32/014-r6040_phylib_support.patch
new file mode 100644
index 0000000000..9a9422877a
--- /dev/null
+++ b/target/linux/rdc/patches-2.6.32/014-r6040_phylib_support.patch
@@ -0,0 +1,468 @@
+Index: linux-2.6.32.12/drivers/net/r6040.c
+===================================================================
+--- linux-2.6.32.12.orig/drivers/net/r6040.c	2010-05-20 10:19:41.000000000 +0200
++++ linux-2.6.32.12/drivers/net/r6040.c	2010-05-20 10:28:48.000000000 +0200
+@@ -45,6 +45,7 @@
+ #include <linux/io.h>
+ #include <linux/irq.h>
+ #include <linux/uaccess.h>
++#include <linux/phy.h>
+ 
+ #include <asm/processor.h>
+ 
+@@ -180,7 +181,6 @@
+ 
+ struct r6040_private {
+ 	spinlock_t lock;		/* driver lock */
+-	struct timer_list timer;
+ 	struct pci_dev *pdev;
+ 	struct r6040_descriptor *rx_insert_ptr;
+ 	struct r6040_descriptor *rx_remove_ptr;
+@@ -190,13 +190,15 @@
+ 	struct r6040_descriptor *tx_ring;
+ 	dma_addr_t rx_ring_dma;
+ 	dma_addr_t tx_ring_dma;
+-	u16	tx_free_desc, phy_addr, phy_mode;
++	u16	tx_free_desc, phy_addr;
+ 	u16	mcr0, mcr1;
+-	u16	switch_sig;
+ 	struct net_device *dev;
+-	struct mii_if_info mii_if;
++	struct mii_bus *mii_bus;
+ 	struct napi_struct napi;
+ 	void __iomem *base;
++	struct phy_device *phydev;
++	int old_link;
++	int old_duplex;
+ };
+ 
+ static char version[] __devinitdata = KERN_INFO DRV_NAME
+@@ -239,20 +241,29 @@
+ 	}
+ }
+ 
+-static int r6040_mdio_read(struct net_device *dev, int mii_id, int reg)
++static int r6040_mdiobus_read(struct mii_bus *bus, int phy_addr, int reg)
+ {
++	struct net_device *dev = bus->priv;
+ 	struct r6040_private *lp = netdev_priv(dev);
+ 	void __iomem *ioaddr = lp->base;
+ 
+-	return (r6040_phy_read(ioaddr, lp->phy_addr, reg));
++	return r6040_phy_read(ioaddr, phy_addr, reg);
+ }
+ 
+-static void r6040_mdio_write(struct net_device *dev, int mii_id, int reg, int val)
++static int r6040_mdiobus_write(struct mii_bus *bus, int phy_addr, int reg, u16 value)
+ {
++	struct net_device *dev = bus->priv;
+ 	struct r6040_private *lp = netdev_priv(dev);
+ 	void __iomem *ioaddr = lp->base;
+ 
+-	r6040_phy_write(ioaddr, lp->phy_addr, reg, val);
++	r6040_phy_write(ioaddr, phy_addr, reg, value);
++
++	return 0;
++}
++
++static int r6040_mdiobus_reset(struct mii_bus *bus)
++{
++	return 0;
+ }
+ 
+ static void r6040_free_txbufs(struct net_device *dev)
+@@ -409,10 +420,9 @@
+ 	void __iomem *ioaddr = priv->base;
+ 
+ 	printk(KERN_WARNING "%s: transmit timed out, int enable %4.4x "
+-		"status %4.4x, PHY status %4.4x\n",
++		"status %4.4x\n",
+ 		dev->name, ioread16(ioaddr + MIER),
+-		ioread16(ioaddr + MISR),
+-		r6040_mdio_read(dev, priv->mii_if.phy_id, MII_BMSR));
++		ioread16(ioaddr + MISR));
+ 
+ 	dev->stats.tx_errors++;
+ 
+@@ -464,9 +474,6 @@
+ 	struct r6040_private *lp = netdev_priv(dev);
+ 	struct pci_dev *pdev = lp->pdev;
+ 
+-	/* deleted timer */
+-	del_timer_sync(&lp->timer);
+-
+ 	spin_lock_irq(&lp->lock);
+ 	napi_disable(&lp->napi);
+ 	netif_stop_queue(dev);
+@@ -496,64 +503,14 @@
+ 	return 0;
+ }
+ 
+-/* Status of PHY CHIP */
+-static int r6040_phy_mode_chk(struct net_device *dev)
+-{
+-	struct r6040_private *lp = netdev_priv(dev);
+-	void __iomem *ioaddr = lp->base;
+-	int phy_dat;
+-
+-	/* PHY Link Status Check */
+-	phy_dat = r6040_phy_read(ioaddr, lp->phy_addr, 1);
+-	if (!(phy_dat & 0x4))
+-		phy_dat = 0x8000;	/* Link Failed, full duplex */
+-
+-	/* PHY Chip Auto-Negotiation Status */
+-	phy_dat = r6040_phy_read(ioaddr, lp->phy_addr, 1);
+-	if (phy_dat & 0x0020) {
+-		/* Auto Negotiation Mode */
+-		phy_dat = r6040_phy_read(ioaddr, lp->phy_addr, 5);
+-		phy_dat &= r6040_phy_read(ioaddr, lp->phy_addr, 4);
+-		if (phy_dat & 0x140)
+-			/* Force full duplex */
+-			phy_dat = 0x8000;
+-		else
+-			phy_dat = 0;
+-	} else {
+-		/* Force Mode */
+-		phy_dat = r6040_phy_read(ioaddr, lp->phy_addr, 0);
+-		if (phy_dat & 0x100)
+-			phy_dat = 0x8000;
+-		else
+-			phy_dat = 0x0000;
+-	}
+-
+-	return phy_dat;
+-};
+-
+-static void r6040_set_carrier(struct mii_if_info *mii)
+-{
+-	if (r6040_phy_mode_chk(mii->dev)) {
+-		/* autoneg is off: Link is always assumed to be up */
+-		if (!netif_carrier_ok(mii->dev))
+-			netif_carrier_on(mii->dev);
+-	} else
+-		r6040_phy_mode_chk(mii->dev);
+-}
+-
+ static int r6040_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
+ {
+ 	struct r6040_private *lp = netdev_priv(dev);
+-	struct mii_ioctl_data *data = if_mii(rq);
+-	int rc;
+ 
+-	if (!netif_running(dev))
++	if (!lp->phydev)
+ 		return -EINVAL;
+-	spin_lock_irq(&lp->lock);
+-	rc = generic_mii_ioctl(&lp->mii_if, data, cmd, NULL);
+-	spin_unlock_irq(&lp->lock);
+-	r6040_set_carrier(&lp->mii_if);
+-	return rc;
++
++	return phy_mii_ioctl(lp->phydev, if_mii(rq), cmd);
+ }
+ 
+ static int r6040_rx(struct net_device *dev, int limit)
+@@ -752,26 +709,6 @@
+ 	if (ret)
+ 		return ret;
+ 
+-	/* Read the PHY ID */
+-	lp->switch_sig = r6040_phy_read(ioaddr, 0, 2);
+-
+-	if (lp->switch_sig  == ICPLUS_PHY_ID) {
+-		r6040_phy_write(ioaddr, 29, 31, 0x175C); /* Enable registers */
+-		lp->phy_mode = 0x8000;
+-	} else {
+-		/* PHY Mode Check */
+-		r6040_phy_write(ioaddr, lp->phy_addr, 4, PHY_CAP);
+-		r6040_phy_write(ioaddr, lp->phy_addr, 0, PHY_MODE);
+-
+-		if (PHY_MODE == 0x3100)
+-			lp->phy_mode = r6040_phy_mode_chk(dev);
+-		else
+-			lp->phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
+-	}
+-
+-	/* Set duplex mode */
+-	lp->mcr0 |= lp->phy_mode;
+-
+ 	/* improve performance (by RDC guys) */
+ 	r6040_phy_write(ioaddr, 30, 17, (r6040_phy_read(ioaddr, 30, 17) | 0x4000));
+ 	r6040_phy_write(ioaddr, 30, 17, ~((~r6040_phy_read(ioaddr, 30, 17)) | 0x2000));
+@@ -784,35 +721,6 @@
+ 	return 0;
+ }
+ 
+-/*
+-  A periodic timer routine
+-	Polling PHY Chip Link Status
+-*/
+-static void r6040_timer(unsigned long data)
+-{
+-	struct net_device *dev = (struct net_device *)data;
+-	struct r6040_private *lp = netdev_priv(dev);
+-	void __iomem *ioaddr = lp->base;
+-	u16 phy_mode;
+-
+-	/* Polling PHY Chip Status */
+-	if (PHY_MODE == 0x3100)
+-		phy_mode = r6040_phy_mode_chk(dev);
+-	else
+-		phy_mode = (PHY_MODE & 0x0100) ? 0x8000:0x0;
+-
+-	if (phy_mode != lp->phy_mode) {
+-		lp->phy_mode = phy_mode;
+-		lp->mcr0 = (lp->mcr0 & 0x7fff) | phy_mode;
+-		iowrite16(lp->mcr0, ioaddr);
+-	}
+-
+-	/* Timer active again */
+-	mod_timer(&lp->timer, round_jiffies(jiffies + HZ));
+-
+-	/* Check media */
+-	mii_check_media(&lp->mii_if, 1, 1);
+-}
+ 
+ /* Read/set MAC address routines */
+ static void r6040_mac_address(struct net_device *dev)
+@@ -874,10 +782,6 @@
+ 	napi_enable(&lp->napi);
+ 	netif_start_queue(dev);
+ 
+-	/* set and active a timer process */
+-	setup_timer(&lp->timer, r6040_timer, (unsigned long) dev);
+-	if (lp->switch_sig != ICPLUS_PHY_ID)
+-		mod_timer(&lp->timer, jiffies + HZ);
+ 	return 0;
+ }
+ 
+@@ -1020,40 +924,22 @@
+ static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+ {
+ 	struct r6040_private *rp = netdev_priv(dev);
+-	int rc;
+-
+-	spin_lock_irq(&rp->lock);
+-	rc = mii_ethtool_gset(&rp->mii_if, cmd);
+-	spin_unlock_irq(&rp->lock);
+ 
+-	return rc;
++	return  phy_ethtool_gset(rp->phydev, cmd);
+ }
+ 
+ static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+ {
+ 	struct r6040_private *rp = netdev_priv(dev);
+-	int rc;
+-
+-	spin_lock_irq(&rp->lock);
+-	rc = mii_ethtool_sset(&rp->mii_if, cmd);
+-	spin_unlock_irq(&rp->lock);
+-	r6040_set_carrier(&rp->mii_if);
+-
+-	return rc;
+-}
+-
+-static u32 netdev_get_link(struct net_device *dev)
+-{
+-	struct r6040_private *rp = netdev_priv(dev);
+ 
+-	return mii_link_ok(&rp->mii_if);
++	return phy_ethtool_sset(rp->phydev, cmd);
+ }
+ 
+ static const struct ethtool_ops netdev_ethtool_ops = {
+ 	.get_drvinfo		= netdev_get_drvinfo,
+ 	.get_settings		= netdev_get_settings,
+ 	.set_settings		= netdev_set_settings,
+-	.get_link		= netdev_get_link,
++	.get_link		= ethtool_op_get_link,
+ };
+ 
+ static const struct net_device_ops r6040_netdev_ops = {
+@@ -1072,6 +958,86 @@
+ #endif
+ };
+ 
++static void r6040_adjust_link(struct net_device *dev)
++{
++	struct r6040_private *lp = netdev_priv(dev);
++	struct phy_device *phydev = lp->phydev;
++	int status_changed = 0;
++	void __iomem *ioaddr = lp->base;
++
++	BUG_ON (!phydev);
++
++	if (lp->old_link != phydev->link) {
++		status_changed = 1;
++		lp->old_link = phydev->link;
++	}
++
++	/* reflect duplex change */
++	if (phydev->link && (lp->old_duplex != phydev->duplex)) {
++		lp->mcr0 |= (phydev->duplex == DUPLEX_FULL ? 0x8000 : 0);
++		iowrite16(lp->mcr0, ioaddr);
++
++		status_changed = 1;
++		lp->old_duplex = phydev->duplex;
++	}
++
++	if (status_changed) {
++		pr_info("%s: link %s", dev->name, phydev->link ?
++			"UP" : "DOWN");
++		if (phydev->link)
++			pr_cont(" - %d/%s", phydev->speed,
++                               DUPLEX_FULL == phydev->duplex ? "full" : "half");
++		pr_cont("\n");
++	}
++}
++
++static int r6040_mii_probe(struct net_device *dev)
++{
++	struct r6040_private *lp = netdev_priv(dev);
++	struct phy_device *phydev = NULL;
++	int phy_addr;
++
++	for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
++		if (lp->mii_bus->phy_map[phy_addr]) {
++			phydev = lp->mii_bus->phy_map[phy_addr];
++			break;
++		}
++	}
++
++	if (!phydev) {
++		printk(KERN_ERR DRV_NAME "no PHY found\n");
++		return -ENODEV;
++	}
++
++	phydev = phy_connect(dev, dev_name(&phydev->dev), &r6040_adjust_link,
++				0, PHY_INTERFACE_MODE_MII);
++
++	if (IS_ERR(phydev)) {
++		printk(KERN_ERR DRV_NAME "could not attach to PHY\n");
++		return PTR_ERR(phydev);
++	}
++
++	/* 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);
++
++	phydev->advertising = phydev->supported;
++	lp->phydev = phydev;
++	lp->old_link = 0;
++	lp->old_duplex = -1;
++
++        printk(KERN_INFO "%s: attached PHY driver [%s] "
++               "(mii_bus:phy_addr=%s)\n", dev->name,
++               phydev->drv->name, dev_name(&phydev->dev));
++
++	return 0;
++}
++
+ static int __devinit r6040_init_one(struct pci_dev *pdev,
+ 					 const struct pci_device_id *ent)
+ {
+@@ -1082,6 +1048,7 @@
+ 	static int card_idx = -1;
+ 	int bar = 0;
+ 	u16 *adrp;
++	int i;
+ 
+ 	printk("%s\n", version);
+ 
+@@ -1169,7 +1136,6 @@
+ 	/* Init RDC private data */
+ 	lp->mcr0 = 0x1002;
+ 	lp->phy_addr = phy_table[card_idx];
+-	lp->switch_sig = 0;
+ 
+ 	/* The RDC-specific entries in the device structure. */
+ 	dev->netdev_ops = &r6040_netdev_ops;
+@@ -1177,28 +1143,61 @@
+ 	dev->watchdog_timeo = TX_TIMEOUT;
+ 
+ 	netif_napi_add(dev, &lp->napi, r6040_poll, 64);
+-	lp->mii_if.dev = dev;
+-	lp->mii_if.mdio_read = r6040_mdio_read;
+-	lp->mii_if.mdio_write = r6040_mdio_write;
+-	lp->mii_if.phy_id = lp->phy_addr;
+-	lp->mii_if.phy_id_mask = 0x1f;
+-	lp->mii_if.reg_num_mask = 0x1f;
++
++	lp->mii_bus = mdiobus_alloc();
++	if (!lp->mii_bus) {
++		printk(KERN_ERR DRV_NAME ": mdiobus_alloc failed\n");
++		goto err_out_unmap;
++	}
++
++	lp->mii_bus->priv = dev;
++	lp->mii_bus->read = r6040_mdiobus_read;
++	lp->mii_bus->write = r6040_mdiobus_write;
++	lp->mii_bus->reset = r6040_mdiobus_reset;
++	lp->mii_bus->name = "r6040_eth_mii";
++	snprintf(lp->mii_bus->id, MII_BUS_ID_SIZE, "%x", card_idx);
++	lp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
++	if (!lp->mii_bus->irq) {
++		printk(KERN_ERR DRV_NAME ": allocation failed\n");
++		goto err_out_mdio;
++	}
++
++	for (i = 0; i < PHY_MAX_ADDR; i++)
++		lp->mii_bus->irq[i] = PHY_POLL;
++
++	err = mdiobus_register(lp->mii_bus);
++	if (err) {
++		printk(KERN_ERR DRV_NAME ": failed to register MII bus\n");
++		goto err_out_mdio_irq;
++	}
++
++	err = r6040_mii_probe(dev);
++	if (err) {
++		printk(KERN_ERR DRV_NAME ": failed to probe MII bus\n");
++		goto err_out_mdio_unregister;
++	}
+ 
+ 	/* Check the vendor ID on the PHY, if 0xffff assume none attached */
+ 	if (r6040_phy_read(ioaddr, lp->phy_addr, 2) == 0xffff) {
+ 		printk(KERN_ERR DRV_NAME ": Failed to detect an attached PHY\n");
+ 		err = -ENODEV;
+-		goto err_out_unmap;
++		goto err_out_mdio_unregister;
+ 	}
+ 
+ 	/* Register net device. After this dev->name assign */
+ 	err = register_netdev(dev);
+ 	if (err) {
+ 		printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
+-		goto err_out_unmap;
++		goto err_out_mdio_unregister;
+ 	}
+ 	return 0;
+ 
++err_out_mdio_unregister:
++	mdiobus_unregister(lp->mii_bus);
++err_out_mdio_irq:
++	kfree(lp->mii_bus->irq);
++err_out_mdio:
++	mdiobus_free(lp->mii_bus);
+ err_out_unmap:
+ 	pci_iounmap(pdev, ioaddr);
+ err_out_free_res:
+@@ -1212,8 +1211,12 @@
+ static void __devexit r6040_remove_one(struct pci_dev *pdev)
+ {
+ 	struct net_device *dev = pci_get_drvdata(pdev);
++	struct r6040_private *lp = netdev_priv(dev);
+ 
+ 	unregister_netdev(dev);
++	mdiobus_unregister(lp->mii_bus);
++	kfree(lp->mii_bus->irq);
++	mdiobus_free(lp->mii_bus);
+ 	pci_release_regions(pdev);
+ 	free_netdev(dev);
+ 	pci_disable_device(pdev);
diff --git a/target/linux/rdc/profiles/ar525w.mk b/target/linux/rdc/profiles/ar525w.mk
index c2faee9da6..e86f47a49a 100644
--- a/target/linux/rdc/profiles/ar525w.mk
+++ b/target/linux/rdc/profiles/ar525w.mk
@@ -6,7 +6,7 @@
 #
 
 define Profile/ar525w
-	NAME:=Airlink AR525W
-	PACKAGES:=kmod-rt61-pci
+  NAME:=Airlink AR525W
+  PACKAGES:=kmod-rt61-pci kmod-switch-ip175c
 endef
 $(eval $(call Profile,ar525w))