/* * sni_82596.c -- driver for intel 82596 ethernet controller, as * used in older SNI RM machines */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/init.h> #include <linux/types.h> #include <linux/bitops.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/irq.h> #define SNI_82596_DRIVER_VERSION "SNI RM 82596 driver - Revision: 0.01" static const char sni_82596_string[] = "snirm_82596"; #define DMA_ALLOC dma_alloc_coherent #define DMA_FREE dma_free_coherent #define DMA_WBACK(priv, addr, len) do { } while (0) #define DMA_INV(priv, addr, len) do { } while (0) #define DMA_WBACK_INV(priv, addr, len) do { } while (0) #define SYSBUS 0x00004400 /* big endian CPU, 82596 little endian */ #define SWAP32(x) cpu_to_le32((u32)(x)) #define SWAP16(x) cpu_to_le16((u16)(x)) #define OPT_MPU_16BIT 0x01 #include "lib82596.c" MODULE_AUTHOR("Thomas Bogendoerfer"); MODULE_DESCRIPTION("i82596 driver"); MODULE_LICENSE("GPL"); module_param(i596_debug, int, 0); MODULE_PARM_DESC(i596_debug, "82596 debug mask"); static inline void ca(struct net_device *dev) { struct i596_private *lp = netdev_priv(dev); writel(0, lp->ca); } static void mpu_port(struct net_device *dev, int c, dma_addr_t x) { struct i596_private *lp = netdev_priv(dev); u32 v = (u32) (c) | (u32) (x); if (lp->options & OPT_MPU_16BIT) { writew(v & 0xffff, lp->mpu_port); wmb(); /* order writes to MPU port */ udelay(1); writew(v >> 16, lp->mpu_port); } else { writel(v, lp->mpu_port); wmb(); /* order writes to MPU port */ udelay(1); writel(v, lp->mpu_port); } } static int __devinit sni_82596_probe(struct platform_device *dev) { struct net_device *netdevice; struct i596_private *lp; struct resource *res, *ca, *idprom, *options; int retval = -ENOMEM; void __iomem *mpu_addr; void __iomem *ca_addr; u8 __iomem *eth_addr; res = platform_get_resource(dev, IORESOURCE_MEM, 0); ca = platform_get_resource(dev, IORESOURCE_MEM, 1); options = platform_get_resource(dev, 0, 0); idprom = platform_get_resource(dev, IORESOURCE_MEM, 2); if (!res || !ca || !options || !idprom) return -ENODEV; mpu_addr = ioremap_nocache(res->start, 4); if (!mpu_addr) return -ENOMEM; ca_addr = ioremap_nocache(ca->start, 4); if (!ca_addr) goto probe_failed_free_mpu; printk(KERN_INFO "Found i82596 at 0x%x\n", res->start); netdevice = alloc_etherdev(sizeof(struct i596_private)); if (!netdevice) goto probe_failed_free_ca; SET_NETDEV_DEV(netdevice, &dev->dev); platform_set_drvdata (dev, netdevice); netdevice->base_addr = res->start; netdevice->irq = platform_get_irq(dev, 0); eth_addr = ioremap_nocache(idprom->start, 0x10); if (!eth_addr) goto probe_failed; /* someone seems to like messed up stuff */ netdevice->dev_addr[0] = readb(eth_addr + 0x0b); netdevice->dev_addr[1] = readb(eth_addr + 0x0a); netdevice->dev_addr[2] = readb(eth_addr + 0x09); netdevice->dev_addr[3] = readb(eth_addr + 0x08); netdevice->dev_addr[4] = readb(eth_addr + 0x07); netdevice->dev_addr[5] = readb(eth_addr + 0x06); iounmap(eth_addr); if (!netdevice->irq) { printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", __FILE__, netdevice->base_addr); goto probe_failed; } lp = netdev_priv(netdevice); lp->options = options->flags & IORESOURCE_BITS; lp->ca = ca_addr; lp->mpu_port = mpu_addr; retval = i82596_probe(netdevice); if (retval == 0) return 0; probe_failed: free_netdev(netdevice); probe_failed_free_ca: iounmap(ca_addr); probe_failed_free_mpu: iounmap(mpu_addr); return retval; } static int __devexit sni_82596_driver_remove(struct platform_device *pdev) { struct net_device *dev = platform_get_drvdata(pdev); struct i596_private *lp = netdev_priv(dev); unregister_netdev(dev); DMA_FREE(dev->dev.parent, sizeof(struct i596_private), lp->dma, lp->dma_addr); iounmap(lp->ca); iounmap(lp->mpu_port); free_netdev (dev); return 0; } static struct platform_driver sni_82596_driver = { .probe = sni_82596_probe, .remove = __devexit_p(sni_82596_driver_remove), .driver = { .name = sni_82596_string, }, }; static int __devinit sni_82596_init(void) { printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n"); return platform_driver_register(&sni_82596_driver); } static void __exit sni_82596_exit(void) { platform_driver_unregister(&sni_82596_driver); } module_init(sni_82596_init); module_exit(sni_82596_exit);