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| 1 | /* |
| 2 | * sni_82596.c -- driver for intel 82596 ethernet controller, as |
| 3 | * used in older SNI RM machines |
| 4 | */ |
| 5 | |
| 6 | #include <linux/module.h> |
| 7 | #include <linux/kernel.h> |
| 8 | #include <linux/string.h> |
| 9 | #include <linux/errno.h> |
| 10 | #include <linux/ioport.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/interrupt.h> |
| 13 | #include <linux/delay.h> |
| 14 | #include <linux/netdevice.h> |
| 15 | #include <linux/etherdevice.h> |
| 16 | #include <linux/skbuff.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/types.h> |
| 19 | #include <linux/bitops.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/io.h> |
| 22 | #include <linux/irq.h> |
| 23 | |
| 24 | #define SNI_82596_DRIVER_VERSION "SNI RM 82596 driver - Revision: 0.01" |
| 25 | |
| 26 | static const char sni_82596_string[] = "snirm_82596"; |
| 27 | |
| 28 | #define DMA_ALLOC dma_alloc_coherent |
| 29 | #define DMA_FREE dma_free_coherent |
| 30 | #define DMA_WBACK(priv, addr, len) do { } while (0) |
| 31 | #define DMA_INV(priv, addr, len) do { } while (0) |
| 32 | #define DMA_WBACK_INV(priv, addr, len) do { } while (0) |
| 33 | |
| 34 | #define SYSBUS 0x00004400 |
| 35 | |
| 36 | /* big endian CPU, 82596 little endian */ |
| 37 | #define SWAP32(x) cpu_to_le32((u32)(x)) |
| 38 | #define SWAP16(x) cpu_to_le16((u16)(x)) |
| 39 | |
| 40 | #define OPT_MPU_16BIT 0x01 |
| 41 | |
| 42 | #include "lib82596.c" |
| 43 | |
| 44 | MODULE_AUTHOR("Thomas Bogendoerfer"); |
| 45 | MODULE_DESCRIPTION("i82596 driver"); |
| 46 | MODULE_LICENSE("GPL"); |
| 47 | MODULE_ALIAS("platform:snirm_82596"); |
| 48 | module_param(i596_debug, int, 0); |
| 49 | MODULE_PARM_DESC(i596_debug, "82596 debug mask"); |
| 50 | |
| 51 | static inline void ca(struct net_device *dev) |
| 52 | { |
| 53 | struct i596_private *lp = netdev_priv(dev); |
| 54 | |
| 55 | writel(0, lp->ca); |
| 56 | } |
| 57 | |
| 58 | |
| 59 | static void mpu_port(struct net_device *dev, int c, dma_addr_t x) |
| 60 | { |
| 61 | struct i596_private *lp = netdev_priv(dev); |
| 62 | |
| 63 | u32 v = (u32) (c) | (u32) (x); |
| 64 | |
| 65 | if (lp->options & OPT_MPU_16BIT) { |
| 66 | writew(v & 0xffff, lp->mpu_port); |
| 67 | wmb(); /* order writes to MPU port */ |
| 68 | udelay(1); |
| 69 | writew(v >> 16, lp->mpu_port); |
| 70 | } else { |
| 71 | writel(v, lp->mpu_port); |
| 72 | wmb(); /* order writes to MPU port */ |
| 73 | udelay(1); |
| 74 | writel(v, lp->mpu_port); |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | |
| 79 | static int __devinit sni_82596_probe(struct platform_device *dev) |
| 80 | { |
| 81 | struct net_device *netdevice; |
| 82 | struct i596_private *lp; |
| 83 | struct resource *res, *ca, *idprom, *options; |
| 84 | int retval = -ENOMEM; |
| 85 | void __iomem *mpu_addr; |
| 86 | void __iomem *ca_addr; |
| 87 | u8 __iomem *eth_addr; |
| 88 | |
| 89 | res = platform_get_resource(dev, IORESOURCE_MEM, 0); |
| 90 | ca = platform_get_resource(dev, IORESOURCE_MEM, 1); |
| 91 | options = platform_get_resource(dev, 0, 0); |
| 92 | idprom = platform_get_resource(dev, IORESOURCE_MEM, 2); |
| 93 | if (!res || !ca || !options || !idprom) |
| 94 | return -ENODEV; |
| 95 | mpu_addr = ioremap_nocache(res->start, 4); |
| 96 | if (!mpu_addr) |
| 97 | return -ENOMEM; |
| 98 | ca_addr = ioremap_nocache(ca->start, 4); |
| 99 | if (!ca_addr) |
| 100 | goto probe_failed_free_mpu; |
| 101 | |
| 102 | printk(KERN_INFO "Found i82596 at 0x%x\n", res->start); |
| 103 | |
| 104 | netdevice = alloc_etherdev(sizeof(struct i596_private)); |
| 105 | if (!netdevice) |
| 106 | goto probe_failed_free_ca; |
| 107 | |
| 108 | SET_NETDEV_DEV(netdevice, &dev->dev); |
| 109 | platform_set_drvdata (dev, netdevice); |
| 110 | |
| 111 | netdevice->base_addr = res->start; |
| 112 | netdevice->irq = platform_get_irq(dev, 0); |
| 113 | |
| 114 | eth_addr = ioremap_nocache(idprom->start, 0x10); |
| 115 | if (!eth_addr) |
| 116 | goto probe_failed; |
| 117 | |
| 118 | /* someone seems to like messed up stuff */ |
| 119 | netdevice->dev_addr[0] = readb(eth_addr + 0x0b); |
| 120 | netdevice->dev_addr[1] = readb(eth_addr + 0x0a); |
| 121 | netdevice->dev_addr[2] = readb(eth_addr + 0x09); |
| 122 | netdevice->dev_addr[3] = readb(eth_addr + 0x08); |
| 123 | netdevice->dev_addr[4] = readb(eth_addr + 0x07); |
| 124 | netdevice->dev_addr[5] = readb(eth_addr + 0x06); |
| 125 | iounmap(eth_addr); |
| 126 | |
| 127 | if (!netdevice->irq) { |
| 128 | printk(KERN_ERR "%s: IRQ not found for i82596 at 0x%lx\n", |
| 129 | __FILE__, netdevice->base_addr); |
| 130 | goto probe_failed; |
| 131 | } |
| 132 | |
| 133 | lp = netdev_priv(netdevice); |
| 134 | lp->options = options->flags & IORESOURCE_BITS; |
| 135 | lp->ca = ca_addr; |
| 136 | lp->mpu_port = mpu_addr; |
| 137 | |
| 138 | retval = i82596_probe(netdevice); |
| 139 | if (retval == 0) |
| 140 | return 0; |
| 141 | |
| 142 | probe_failed: |
| 143 | free_netdev(netdevice); |
| 144 | probe_failed_free_ca: |
| 145 | iounmap(ca_addr); |
| 146 | probe_failed_free_mpu: |
| 147 | iounmap(mpu_addr); |
| 148 | return retval; |
| 149 | } |
| 150 | |
| 151 | static int __devexit sni_82596_driver_remove(struct platform_device *pdev) |
| 152 | { |
| 153 | struct net_device *dev = platform_get_drvdata(pdev); |
| 154 | struct i596_private *lp = netdev_priv(dev); |
| 155 | |
| 156 | unregister_netdev(dev); |
| 157 | DMA_FREE(dev->dev.parent, sizeof(struct i596_private), |
| 158 | lp->dma, lp->dma_addr); |
| 159 | iounmap(lp->ca); |
| 160 | iounmap(lp->mpu_port); |
| 161 | free_netdev (dev); |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | static struct platform_driver sni_82596_driver = { |
| 166 | .probe = sni_82596_probe, |
| 167 | .remove = __devexit_p(sni_82596_driver_remove), |
| 168 | .driver = { |
| 169 | .name = sni_82596_string, |
| 170 | .owner = THIS_MODULE, |
| 171 | }, |
| 172 | }; |
| 173 | |
| 174 | static int __devinit sni_82596_init(void) |
| 175 | { |
| 176 | printk(KERN_INFO SNI_82596_DRIVER_VERSION "\n"); |
| 177 | return platform_driver_register(&sni_82596_driver); |
| 178 | } |
| 179 | |
| 180 | |
| 181 | static void __exit sni_82596_exit(void) |
| 182 | { |
| 183 | platform_driver_unregister(&sni_82596_driver); |
| 184 | } |
| 185 | |
| 186 | module_init(sni_82596_init); |
| 187 | module_exit(sni_82596_exit); |
| 188 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
