NET: au1000-eth: Convert to platform_driver model (bd2302c2) · Commits · e / devices / android_kernel_teracube_2e

drivers/net/au1000_eth.c

+223 −218

Original line number	Diff line number	Diff line
		@@ -55,6 +55,7 @@
		#include <linux/delay.h>
		#include <linux/crc32.h>
		#include <linux/phy.h>
		#include <linux/platform_device.h>

		#include <asm/cpu.h>
		#include <asm/mipsregs.h>
		@@ -63,6 +64,7 @@
		#include <asm/processor.h>

		#include <au1000.h>
		#include <au1xxx_eth.h>
		#include <prom.h>

		#include "au1000_eth.h"
		@@ -112,15 +114,15 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
		*
		* PHY detection algorithm
		*
		* If AU1XXX_PHY_STATIC_CONFIG is undefined, the PHY setup is
		* If phy_static_config is undefined, the PHY setup is
		* autodetected:
		*
		* mii_probe() first searches the current MAC's MII bus for a PHY,
		* selecting the first (or last, if AU1XXX_PHY_SEARCH_HIGHEST_ADDR is
		* selecting the first (or last, if phy_search_highest_addr is
		* defined) PHY address not already claimed by another netdev.
		*
		* If nothing was found that way when searching for the 2nd ethernet
		* controller's PHY and AU1XXX_PHY1_SEARCH_ON_MAC0 is defined, then
		* controller's PHY and phy1_search_mac0 is defined, then
		* the first MII bus is searched as well for an unclaimed PHY; this is
		* needed in case of a dual-PHY accessible only through the MAC0's MII
		* bus.
		@@ -129,9 +131,7 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
		* controller is not registered to the network subsystem.
		*/

		/* autodetection defaults */
		#undef AU1XXX_PHY_SEARCH_HIGHEST_ADDR
		#define AU1XXX_PHY1_SEARCH_ON_MAC0
		/* autodetection defaults: phy1_search_mac0 */

		/* static PHY setup
		*
		@@ -148,29 +148,6 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
		* specific irq-map
		*/

		#if defined(CONFIG_MIPS_BOSPORUS)
		/*
		* Micrel/Kendin 5 port switch attached to MAC0,
		* MAC0 is associated with PHY address 5 (== WAN port)
		* MAC1 is not associated with any PHY, since it's connected directly
		* to the switch.
		* no interrupts are used
		*/
		# define AU1XXX_PHY_STATIC_CONFIG

		# define AU1XXX_PHY0_ADDR 5
		# define AU1XXX_PHY0_BUSID 0
		# undef AU1XXX_PHY0_IRQ

		# undef AU1XXX_PHY1_ADDR
		# undef AU1XXX_PHY1_BUSID
		# undef AU1XXX_PHY1_IRQ
		#endif

		#if defined(AU1XXX_PHY0_BUSID) && (AU1XXX_PHY0_BUSID > 0)
		# error MAC0-associated PHY attached 2nd MACs MII bus not supported yet
		#endif

		static void enable_mac(struct net_device *dev, int force_reset)
		{
		unsigned long flags;
		@@ -390,53 +367,41 @@ static int mii_probe (struct net_device *dev)
		struct au1000_private *const aup = netdev_priv(dev);
		struct phy_device *phydev = NULL;

		#if defined(AU1XXX_PHY_STATIC_CONFIG)
		if (aup->phy_static_config) {
		BUG_ON(aup->mac_id < 0 \|\| aup->mac_id > 1);

		if(aup->mac_id == 0) { /* get PHY0 */
		# if defined(AU1XXX_PHY0_ADDR)
		phydev = au_macs[AU1XXX_PHY0_BUSID]->mii_bus->phy_map[AU1XXX_PHY0_ADDR];
		# else
		printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
		dev->name);
		return 0;
		# endif /* defined(AU1XXX_PHY0_ADDR) */
		} else if (aup->mac_id == 1) { /* get PHY1 */
		# if defined(AU1XXX_PHY1_ADDR)
		phydev = au_macs[AU1XXX_PHY1_BUSID]->mii_bus->phy_map[AU1XXX_PHY1_ADDR];
		# else
		if (aup->phy_addr)
		phydev = aup->mii_bus->phy_map[aup->phy_addr];
		else
		printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
		dev->name);
		return 0;
		# endif /* defined(AU1XXX_PHY1_ADDR) */
		}

		#else /* defined(AU1XXX_PHY_STATIC_CONFIG) */
		} else {
		int phy_addr;

		/* find the first (lowest address) PHY on the current MAC's MII bus */
		for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
		if (aup->mii_bus->phy_map[phy_addr]) {
		phydev = aup->mii_bus->phy_map[phy_addr];
		# if !defined(AU1XXX_PHY_SEARCH_HIGHEST_ADDR)
		if (!aup->phy_search_highest_addr)
		break; /* break out with first one found */
		# endif
		}

		# if defined(AU1XXX_PHY1_SEARCH_ON_MAC0)
		if (aup->phy1_search_mac0) {
		/* try harder to find a PHY */
		if (!phydev && (aup->mac_id == 1)) {
		/* no PHY found, maybe we have a dual PHY? */
		printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, "
		"let's see if it's attached to MAC0...\n");

		BUG_ON(!au_macs[0]);

		/* find the first (lowest address) non-attached PHY on
		* the MAC0 MII bus */
		for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
		struct phy_device *const tmp_phydev =
		au_macs[0]->mii_bus->phy_map[phy_addr];
		aup->mii_bus->phy_map[phy_addr];

		if (aup->mac_id == 1)
		break;

		if (!tmp_phydev)
		continue; /* no PHY here... */
		@@ -448,9 +413,9 @@ static int mii_probe (struct net_device *dev)
		break; /* found it */
		}
		}
		# endif /* defined(AU1XXX_PHY1_SEARCH_OTHER_BUS) */
		}
		}

		#endif /* defined(AU1XXX_PHY_STATIC_CONFIG) */
		if (!phydev) {
		printk (KERN_ERR DRV_NAME ":%s: no PHY found\n", dev->name);
		return -1;
		@@ -578,31 +543,6 @@ setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base)
		}
		}

		static struct {
		u32 base_addr;
		u32 macen_addr;
		int irq;
		struct net_device *dev;
		} iflist[2] = {
		#ifdef CONFIG_SOC_AU1000
		{AU1000_ETH0_BASE, AU1000_MAC0_ENABLE, AU1000_MAC0_DMA_INT},
		{AU1000_ETH1_BASE, AU1000_MAC1_ENABLE, AU1000_MAC1_DMA_INT}
		#endif
		#ifdef CONFIG_SOC_AU1100
		{AU1100_ETH0_BASE, AU1100_MAC0_ENABLE, AU1100_MAC0_DMA_INT}
		#endif
		#ifdef CONFIG_SOC_AU1500
		{AU1500_ETH0_BASE, AU1500_MAC0_ENABLE, AU1500_MAC0_DMA_INT},
		{AU1500_ETH1_BASE, AU1500_MAC1_ENABLE, AU1500_MAC1_DMA_INT}
		#endif
		#ifdef CONFIG_SOC_AU1550
		{AU1550_ETH0_BASE, AU1550_MAC0_ENABLE, AU1550_MAC0_DMA_INT},
		{AU1550_ETH1_BASE, AU1550_MAC1_ENABLE, AU1550_MAC1_DMA_INT}
		#endif
		};

		static int num_ifs;

		/*
		* ethtool operations
		*/
		@@ -711,7 +651,6 @@ static int au1000_init(struct net_device *dev)

		static inline void update_rx_stats(struct net_device *dev, u32 status)
		{
		struct au1000_private *aup = netdev_priv(dev);
		struct net_device_stats *ps = &dev->stats;

		ps->rx_packets++;
		@@ -969,7 +908,7 @@ static netdev_tx_t au1000_tx(struct sk_buff skb, struct net_device dev)
		}

		pDB = aup->tx_db_inuse[aup->tx_head];
		skb_copy_from_linear_data(skb, pDB->vaddr, skb->len);
		skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len);
		if (skb->len < ETH_ZLEN) {
		for (i=skb->len; i<ETH_ZLEN; i++) {
		((char *)pDB->vaddr)[i] = 0;
		@@ -1058,53 +997,59 @@ static const struct net_device_ops au1000_netdev_ops = {
		.ndo_change_mtu = eth_change_mtu,
		};

		static struct net_device * au1000_probe(int port_num)
		static int __devinit au1000_probe(struct platform_device *pdev)
		{
		static unsigned version_printed = 0;
		struct au1000_private *aup = NULL;
		struct au1000_eth_platform_data *pd;
		struct net_device *dev = NULL;
		db_dest_t pDB, pDBfree;
		int irq, i, err = 0;
		struct resource base, macen;
		char ethaddr[6];
		int irq, i, err;
		u32 base, macen;

		if (port_num >= NUM_ETH_INTERFACES)
		return NULL;
		base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!base) {
		printk(KERN_ERR DRV_NAME ": failed to retrieve base register\n");
		err = -ENODEV;
		goto out;
		}

		base = CPHYSADDR(iflist[port_num].base_addr );
		macen = CPHYSADDR(iflist[port_num].macen_addr);
		irq = iflist[port_num].irq;
		macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
		if (!macen) {
		printk(KERN_ERR DRV_NAME ": failed to retrieve MAC Enable register\n");
		err = -ENODEV;
		goto out;
		}

		if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") \|\|
		!request_mem_region(macen, 4, "Au1x00 ENET"))
		return NULL;
		irq = platform_get_irq(pdev, 0);
		if (irq < 0) {
		printk(KERN_ERR DRV_NAME ": failed to retrieve IRQ\n");
		err = -ENODEV;
		goto out;
		}

		if (version_printed++ == 0)
		printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
		if (!request_mem_region(base->start, resource_size(base), pdev->name)) {
		printk(KERN_ERR DRV_NAME ": failed to request memory region for base registers\n");
		err = -ENXIO;
		goto out;
		}

		if (!request_mem_region(macen->start, resource_size(macen), pdev->name)) {
		printk(KERN_ERR DRV_NAME ": failed to request memory region for MAC enable register\n");
		err = -ENXIO;
		goto err_request;
		}

		dev = alloc_etherdev(sizeof(struct au1000_private));
		if (!dev) {
		printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
		return NULL;
		err = -ENOMEM;
		goto err_alloc;
		}

		dev->base_addr = base;
		dev->irq = irq;
		dev->netdev_ops = &au1000_netdev_ops;
		SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
		dev->watchdog_timeo = ETH_TX_TIMEOUT;

		err = register_netdev(dev);
		if (err != 0) {
		printk(KERN_ERR "%s: Cannot register net device, error %d\n",
		DRV_NAME, err);
		free_netdev(dev);
		return NULL;
		}

		printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n",
		dev->name, base, irq);

		SET_NETDEV_DEV(dev, &pdev->dev);
		platform_set_drvdata(pdev, dev);
		aup = netdev_priv(dev);

		spin_lock_init(&aup->lock);
		@@ -1115,21 +1060,29 @@ static struct net_device * au1000_probe(int port_num)
		(NUM_TX_BUFFS + NUM_RX_BUFFS),
		&aup->dma_addr, 0);
		if (!aup->vaddr) {
		free_netdev(dev);
		release_mem_region( base, MAC_IOSIZE);
		release_mem_region(macen, 4);
		return NULL;
		printk(KERN_ERR DRV_NAME ": failed to allocate data buffers\n");
		err = -ENOMEM;
		goto err_vaddr;
		}

		/* aup->mac is the base address of the MAC's registers */
		aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr;
		aup->mac = (volatile mac_reg_t *)ioremap_nocache(base->start, resource_size(base));
		if (!aup->mac) {
		printk(KERN_ERR DRV_NAME ": failed to ioremap MAC registers\n");
		err = -ENXIO;
		goto err_remap1;
		}

		/* Setup some variables for quick register address access */
		aup->enable = (volatile u32 *)iflist[port_num].macen_addr;
		aup->mac_id = port_num;
		au_macs[port_num] = aup;
		aup->enable = (volatile u32 *)ioremap_nocache(macen->start, resource_size(macen));
		if (!aup->enable) {
		printk(KERN_ERR DRV_NAME ": failed to ioremap MAC enable register\n");
		err = -ENXIO;
		goto err_remap2;
		}
		aup->mac_id = pdev->id;

		if (port_num == 0) {
		if (pdev->id == 0) {
		if (prom_get_ethernet_addr(ethaddr) == 0)
		memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
		else {
		@@ -1139,7 +1092,7 @@ static struct net_device * au1000_probe(int port_num)
		}

		setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
		} else if (port_num == 1)
		} else if (pdev->id == 1)
		setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);

		/*
		@@ -1147,14 +1100,37 @@ static struct net_device * au1000_probe(int port_num)
		* to match those that are printed on their stickers
		*/
		memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
		dev->dev_addr[5] += port_num;
		dev->dev_addr[5] += pdev->id;

		*aup->enable = 0;
		aup->mac_enabled = 0;

		pd = pdev->dev.platform_data;
		if (!pd) {
		printk(KERN_INFO DRV_NAME ": no platform_data passed, PHY search on MAC0\n");
		aup->phy1_search_mac0 = 1;
		} else {
		aup->phy_static_config = pd->phy_static_config;
		aup->phy_search_highest_addr = pd->phy_search_highest_addr;
		aup->phy1_search_mac0 = pd->phy1_search_mac0;
		aup->phy_addr = pd->phy_addr;
		aup->phy_busid = pd->phy_busid;
		aup->phy_irq = pd->phy_irq;
		}

		if (aup->phy_busid && aup->phy_busid > 0) {
		printk(KERN_ERR DRV_NAME ": MAC0-associated PHY attached 2nd MACs MII"
		"bus not supported yet\n");
		err = -ENODEV;
		goto err_mdiobus_alloc;
		}

		aup->mii_bus = mdiobus_alloc();
		if (aup->mii_bus == NULL)
		goto err_out;
		if (aup->mii_bus == NULL) {
		printk(KERN_ERR DRV_NAME ": failed to allocate mdiobus structure\n");
		err = -ENOMEM;
		goto err_mdiobus_alloc;
		}

		aup->mii_bus->priv = dev;
		aup->mii_bus->read = au1000_mdiobus_read;
		@@ -1168,24 +1144,20 @@ static struct net_device * au1000_probe(int port_num)

		for(i = 0; i < PHY_MAX_ADDR; ++i)
		aup->mii_bus->irq[i] = PHY_POLL;

		/* if known, set corresponding PHY IRQs */
		#if defined(AU1XXX_PHY_STATIC_CONFIG)
		# if defined(AU1XXX_PHY0_IRQ)
		if (AU1XXX_PHY0_BUSID == aup->mac_id)
		aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ;
		# endif
		# if defined(AU1XXX_PHY1_IRQ)
		if (AU1XXX_PHY1_BUSID == aup->mac_id)
		aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ;
		# endif
		#endif
		mdiobus_register(aup->mii_bus);
		if (aup->phy_static_config)
		if (aup->phy_irq && aup->phy_busid == aup->mac_id)
		aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq;

		if (mii_probe(dev) != 0) {
		goto err_out;
		err = mdiobus_register(aup->mii_bus);
		if (err) {
		printk(KERN_ERR DRV_NAME " failed to register MDIO bus\n");
		goto err_mdiobus_reg;
		}

		if (mii_probe(dev) != 0)
		goto err_out;

		pDBfree = NULL;
		/* setup the data buffer descriptors and attach a buffer to each one */
		pDB = aup->db;
		@@ -1216,19 +1188,35 @@ static struct net_device * au1000_probe(int port_num)
		aup->tx_db_inuse[i] = pDB;
		}

		dev->base_addr = base->start;
		dev->irq = irq;
		dev->netdev_ops = &au1000_netdev_ops;
		SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
		dev->watchdog_timeo = ETH_TX_TIMEOUT;

		/*
		* The boot code uses the ethernet controller, so reset it to start
		* fresh. au1000_init() expects that the device is in reset state.
		*/
		reset_mac(dev);

		return dev;
		err = register_netdev(dev);
		if (err) {
		printk(KERN_ERR DRV_NAME "%s: Cannot register net device, aborting.\n",
		dev->name);
		goto err_out;
		}

		printk("%s: Au1xx0 Ethernet found at 0x%lx, irq %d\n",
		dev->name, (unsigned long)base->start, irq);
		if (version_printed++ == 0)
		printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);

		return 0;

		err_out:
		if (aup->mii_bus != NULL) {
		if (aup->mii_bus != NULL)
		mdiobus_unregister(aup->mii_bus);
		mdiobus_free(aup->mii_bus);
		}

		/* here we should have a valid dev plus aup-> register addresses
		* so we can reset the mac properly.*/
		@@ -1242,67 +1230,84 @@ static struct net_device * au1000_probe(int port_num)
		if (aup->tx_db_inuse[i])
		ReleaseDB(aup, aup->tx_db_inuse[i]);
		}
		err_mdiobus_reg:
		mdiobus_free(aup->mii_bus);
		err_mdiobus_alloc:
		iounmap(aup->enable);
		err_remap2:
		iounmap(aup->mac);
		err_remap1:
		dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
		(void *)aup->vaddr, aup->dma_addr);
		unregister_netdev(dev);
		err_vaddr:
		free_netdev(dev);
		release_mem_region( base, MAC_IOSIZE);
		release_mem_region(macen, 4);
		return NULL;
		err_alloc:
		release_mem_region(macen->start, resource_size(macen));
		err_request:
		release_mem_region(base->start, resource_size(base));
		out:
		return err;
		}

		/*
		* Setup the base address and interrupt of the Au1xxx ethernet macs
		* based on cpu type and whether the interface is enabled in sys_pinfunc
		* register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0.
		*/
		static int __init au1000_init_module(void)
		static int __devexit au1000_remove(struct platform_device *pdev)
		{
		int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4);
		struct net_device *dev;
		int i, found_one = 0;

		num_ifs = NUM_ETH_INTERFACES - ni;

		for(i = 0; i < num_ifs; i++) {
		dev = au1000_probe(i);
		iflist[i].dev = dev;
		if (dev)
		found_one++;
		}
		if (!found_one)
		return -ENODEV;
		return 0;
		}
		struct net_device *dev = platform_get_drvdata(pdev);
		struct au1000_private *aup = netdev_priv(dev);
		int i;
		struct resource base, macen;

		static void __exit au1000_cleanup_module(void)
		{
		int i, j;
		struct net_device *dev;
		struct au1000_private *aup;
		platform_set_drvdata(pdev, NULL);

		for (i = 0; i < num_ifs; i++) {
		dev = iflist[i].dev;
		if (dev) {
		aup = netdev_priv(dev);
		unregister_netdev(dev);
		mdiobus_unregister(aup->mii_bus);
		mdiobus_free(aup->mii_bus);
		for (j = 0; j < NUM_RX_DMA; j++)
		if (aup->rx_db_inuse[j])
		ReleaseDB(aup, aup->rx_db_inuse[j]);
		for (j = 0; j < NUM_TX_DMA; j++)
		if (aup->tx_db_inuse[j])
		ReleaseDB(aup, aup->tx_db_inuse[j]);

		for (i = 0; i < NUM_RX_DMA; i++)
		if (aup->rx_db_inuse[i])
		ReleaseDB(aup, aup->rx_db_inuse[i]);

		for (i = 0; i < NUM_TX_DMA; i++)
		if (aup->tx_db_inuse[i])
		ReleaseDB(aup, aup->tx_db_inuse[i]);

		dma_free_noncoherent(NULL, MAX_BUF_SIZE *
		(NUM_TX_BUFFS + NUM_RX_BUFFS),
		(void *)aup->vaddr, aup->dma_addr);
		release_mem_region(dev->base_addr, MAC_IOSIZE);
		release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4);

		iounmap(aup->mac);
		iounmap(aup->enable);

		base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		release_mem_region(base->start, resource_size(base));

		macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
		release_mem_region(macen->start, resource_size(macen));

		free_netdev(dev);

		return 0;
		}

		static struct platform_driver au1000_eth_driver = {
		.probe = au1000_probe,
		.remove = __devexit_p(au1000_remove),
		.driver = {
		.name = "au1000-eth",
		.owner = THIS_MODULE,
		},
		};
		MODULE_ALIAS("platform:au1000-eth");


		static int __init au1000_init_module(void)
		{
		return platform_driver_register(&au1000_eth_driver);
		}

		static void __exit au1000_exit_module(void)
		{
		platform_driver_unregister(&au1000_eth_driver);
		}

		module_init(au1000_init_module);
		module_exit(au1000_cleanup_module);
		module_exit(au1000_exit_module);

drivers/net/au1000_eth.h

+9 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,15 @@ struct au1000_private {
		struct phy_device *phy_dev;
		struct mii_bus *mii_bus;

		/* PHY configuration */
		int phy_static_config;
		int phy_search_highest_addr;
		int phy1_search_mac0;

		int phy_addr;
		int phy_busid;
		int phy_irq;

		/* These variables are just for quick access to certain regs addresses. */
		volatile mac_reg_t mac; / mac registers */
		volatile u32 enable; / address of MAC Enable Register */