diff options
| -rw-r--r-- | drivers/net/fec.c | 249 |
1 files changed, 220 insertions, 29 deletions
diff --git a/drivers/net/fec.c b/drivers/net/fec.c index 7631062cd44d..ea23baaf0256 100644 --- a/drivers/net/fec.c +++ b/drivers/net/fec.c @@ -39,6 +39,7 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/clk.h> +#include <linux/platform_device.h> #include <asm/cacheflush.h> @@ -49,12 +50,6 @@ #include "fec.h" -#if defined(CONFIG_FEC2) -#define FEC_MAX_PORTS 2 -#else -#define FEC_MAX_PORTS 1 -#endif - #ifdef CONFIG_ARCH_MXC #include <mach/hardware.h> #define FEC_ALIGNMENT 0xf @@ -62,13 +57,22 @@ #define FEC_ALIGNMENT 0x3 #endif +#if defined CONFIG_M5272 || defined CONFIG_M527x || defined CONFIG_M523x \ + || defined CONFIG_M528x || defined CONFIG_M532x || defined CONFIG_M520x +#define FEC_LEGACY +/* + * Define the fixed address of the FEC hardware. + */ #if defined(CONFIG_M5272) #define HAVE_mii_link_interrupt #endif -/* - * Define the fixed address of the FEC hardware. - */ +#if defined(CONFIG_FEC2) +#define FEC_MAX_PORTS 2 +#else +#define FEC_MAX_PORTS 1 +#endif + static unsigned int fec_hw[] = { #if defined(CONFIG_M5272) (MCF_MBAR + 0x840), @@ -106,6 +110,8 @@ static unsigned char fec_mac_default[] = { #define FEC_FLASHMAC 0 #endif +#endif /* FEC_LEGACY */ + /* Forward declarations of some structures to support different PHYs */ @@ -189,6 +195,8 @@ struct fec_enet_private { struct net_device *netdev; + struct clk *clk; + /* The saved address of a sent-in-place packet/buffer, for skfree(). */ unsigned char *tx_bounce[TX_RING_SIZE]; struct sk_buff* tx_skbuff[TX_RING_SIZE]; @@ -1919,7 +1927,9 @@ mii_discover_phy(uint mii_reg, struct net_device *dev) printk("FEC: No PHY device found.\n"); /* Disable external MII interface */ fecp->fec_mii_speed = fep->phy_speed = 0; +#ifdef FREC_LEGACY fec_disable_phy_intr(); +#endif } } @@ -2101,12 +2111,12 @@ fec_set_mac_address(struct net_device *dev) } -/* Initialize the FEC Ethernet on 860T (or ColdFire 5272). - */ /* * XXX: We need to clean up on failure exits here. + * + * index is only used in legacy code */ -int __init fec_enet_init(struct net_device *dev) +int __init fec_enet_init(struct net_device *dev, int index) { struct fec_enet_private *fep = netdev_priv(dev); unsigned long mem_addr; @@ -2114,11 +2124,6 @@ int __init fec_enet_init(struct net_device *dev) cbd_t *cbd_base; volatile fec_t *fecp; int i, j; - static int index = 0; - - /* Only allow us to be probed once. */ - if (index >= FEC_MAX_PORTS) - return -ENXIO; /* Allocate memory for buffer descriptors. */ @@ -2134,7 +2139,7 @@ int __init fec_enet_init(struct net_device *dev) /* Create an Ethernet device instance. */ - fecp = (volatile fec_t *) fec_hw[index]; + fecp = (volatile fec_t *)dev->base_addr; fep->index = index; fep->hwp = fecp; @@ -2145,16 +2150,24 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_ecntrl = 1; udelay(10); - /* Set the Ethernet address. If using multiple Enets on the 8xx, - * this needs some work to get unique addresses. - * - * This is our default MAC address unless the user changes - * it via eth_mac_addr (our dev->set_mac_addr handler). - */ + /* Set the Ethernet address */ +#ifdef FEC_LEGACY fec_get_mac(dev); +#else + { + unsigned long l; + l = fecp->fec_addr_low; + dev->dev_addr[0] = (unsigned char)((l & 0xFF000000) >> 24); + dev->dev_addr[1] = (unsigned char)((l & 0x00FF0000) >> 16); + dev->dev_addr[2] = (unsigned char)((l & 0x0000FF00) >> 8); + dev->dev_addr[3] = (unsigned char)((l & 0x000000FF) >> 0); + l = fecp->fec_addr_high; + dev->dev_addr[4] = (unsigned char)((l & 0xFF000000) >> 24); + dev->dev_addr[5] = (unsigned char)((l & 0x00FF0000) >> 16); + } +#endif cbd_base = (cbd_t *)mem_addr; - /* XXX: missing check for allocation failure */ /* Set receive and transmit descriptor base. */ @@ -2222,10 +2235,12 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_x_des_start = (unsigned long)fep->bd_dma + sizeof(cbd_t) * RX_RING_SIZE; +#ifdef FEC_LEGACY /* Install our interrupt handlers. This varies depending on * the architecture. */ fec_request_intrs(dev); +#endif fecp->fec_grp_hash_table_high = 0; fecp->fec_grp_hash_table_low = 0; @@ -2237,8 +2252,6 @@ int __init fec_enet_init(struct net_device *dev) fecp->fec_hash_table_low = 0; #endif - dev->base_addr = (unsigned long)fecp; - /* The FEC Ethernet specific entries in the device structure. */ dev->open = fec_enet_open; dev->hard_start_xmit = fec_enet_start_xmit; @@ -2252,7 +2265,20 @@ int __init fec_enet_init(struct net_device *dev) mii_free = mii_cmds; /* setup MII interface */ +#ifdef FEC_LEGACY fec_set_mii(dev, fep); +#else + fecp->fec_r_cntrl = OPT_FRAME_SIZE | 0x04; + fecp->fec_x_cntrl = 0x00; + + /* + * Set MII speed to 2.5 MHz + */ + fep->phy_speed = ((((clk_get_rate(fep->clk) / 2 + 4999999) + / 2500000) / 2) & 0x3F) << 1; + fecp->fec_mii_speed = fep->phy_speed; + fec_restart(dev, 0); +#endif /* Clear and enable interrupts */ fecp->fec_ievent = 0xffc00000; @@ -2265,7 +2291,6 @@ int __init fec_enet_init(struct net_device *dev) fep->phy_addr = 0; mii_queue(dev, mk_mii_read(MII_REG_PHYIR1), mii_discover_phy); - index++; return 0; } @@ -2417,6 +2442,7 @@ fec_stop(struct net_device *dev) fecp->fec_mii_speed = fep->phy_speed; } +#ifdef FEC_LEGACY static int __init fec_enet_module_init(void) { struct net_device *dev; @@ -2428,7 +2454,8 @@ static int __init fec_enet_module_init(void) dev = alloc_etherdev(sizeof(struct fec_enet_private)); if (!dev) return -ENOMEM; - err = fec_enet_init(dev); + dev->base_addr = (unsigned long)fec_hw[i]; + err = fec_enet_init(dev, i); if (err) { free_netdev(dev); continue; @@ -2443,6 +2470,170 @@ static int __init fec_enet_module_init(void) } return 0; } +#else + +static int __devinit +fec_probe(struct platform_device *pdev) +{ + struct fec_enet_private *fep; + struct net_device *ndev; + int i, irq, ret = 0; + struct resource *r; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) + return -ENXIO; + + r = request_mem_region(r->start, resource_size(r), pdev->name); + if (!r) + return -EBUSY; + + /* Init network device */ + ndev = alloc_etherdev(sizeof(struct fec_enet_private)); + if (!ndev) + return -ENOMEM; + + SET_NETDEV_DEV(ndev, &pdev->dev); + + /* setup board info structure */ + fep = netdev_priv(ndev); + memset(fep, 0, sizeof(*fep)); + + ndev->base_addr = (unsigned long)ioremap(r->start, resource_size(r)); + + if (!ndev->base_addr) { + ret = -ENOMEM; + goto failed_ioremap; + } + + platform_set_drvdata(pdev, ndev); + + /* This device has up to three irqs on some platforms */ + for (i = 0; i < 3; i++) { + irq = platform_get_irq(pdev, i); + if (i && irq < 0) + break; + ret = request_irq(irq, fec_enet_interrupt, IRQF_DISABLED, pdev->name, ndev); + if (ret) { + while (i >= 0) { + irq = platform_get_irq(pdev, i); + free_irq(irq, ndev); + i--; + } + goto failed_irq; + } + } + + fep->clk = clk_get(&pdev->dev, "fec_clk"); + if (IS_ERR(fep->clk)) { + ret = PTR_ERR(fep->clk); + goto failed_clk; + } + clk_enable(fep->clk); + + ret = fec_enet_init(ndev, 0); + if (ret) + goto failed_init; + + ret = register_netdev(ndev); + if (ret) + goto failed_register; + + return 0; + +failed_register: +failed_init: + clk_disable(fep->clk); + clk_put(fep->clk); +failed_clk: + for (i = 0; i < 3; i++) { + irq = platform_get_irq(pdev, i); + if (irq > 0) + free_irq(irq, ndev); + } +failed_irq: + iounmap((void __iomem *)ndev->base_addr); +failed_ioremap: + free_netdev(ndev); + + return ret; +} + +static int __devexit +fec_drv_remove(struct platform_device *pdev) +{ + struct net_device *ndev = platform_get_drvdata(pdev); + struct fec_enet_private *fep = netdev_priv(ndev); + + platform_set_drvdata(pdev, NULL); + + fec_stop(ndev); + clk_disable(fep->clk); + clk_put(fep->clk); + iounmap((void __iomem *)ndev->base_addr); + unregister_netdev(ndev); + free_netdev(ndev); + return 0; +} + +static int +fec_suspend(struct platform_device *dev, pm_message_t state) +{ + struct net_device *ndev = platform_get_drvdata(dev); + struct fec_enet_private *fep; + + if (ndev) { + fep = netdev_priv(ndev); + if (netif_running(ndev)) { + netif_device_detach(ndev); + fec_stop(ndev); + } + } + return 0; +} + +static int +fec_resume(struct platform_device *dev) +{ + struct net_device *ndev = platform_get_drvdata(dev); + + if (ndev) { + if (netif_running(ndev)) { + fec_enet_init(ndev, 0); + netif_device_attach(ndev); + } + } + return 0; +} + +static struct platform_driver fec_driver = { + .driver = { + .name = "fec", + .owner = THIS_MODULE, + }, + .probe = fec_probe, + .remove = __devexit_p(fec_drv_remove), + .suspend = fec_suspend, + .resume = fec_resume, +}; + +static int __init +fec_enet_module_init(void) +{ + printk(KERN_INFO "FEC Ethernet Driver\n"); + + return platform_driver_register(&fec_driver); +} + +static void __exit +fec_enet_cleanup(void) +{ + platform_driver_unregister(&fec_driver); +} + +module_exit(fec_enet_cleanup); + +#endif /* FEC_LEGACY */ module_init(fec_enet_module_init); |