Linux2.6 DM9000驱动模编译为模块

1199  static int __init

1200  dm9000_init(void)

1201  {

1202   printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME);

1203

1204   return platform_driver_register(&dm9000_driver);        /* search board and register */

1205  }

16struct platform_device {  //这个结构直接和硬件交互

17        const char      * name;

18        u32             id;

19        struct device   dev;

20        u32             num_resources;

21        struct resource * resource;  //所描述的设备的硬件资源

22};

16 struct resource {
17         const char *name;
18         unsigned long start, end;
19         unsigned long flags;
20         struct resource *parent, *sibling, *child;
21 };

//挂在CPU上的每个独立的设备单元，都需要一段线性的地址空间来描述-查看memory map.

//resource->start描述设备实体在cpu总线上的线性起始物理地址;

//resource->end -描述设备实体在cpu总线上的线性结尾物理地址;

//resource->name 描述这个设备实体的名称,这个名字开发人员可以随意起,但最好贴切;

//resource->flag 描述这个设备实体的一些共性和特性的标志位;

static struct resource  xx_dm9k_resource[] = {

[0] = {

.strat = NGCS2,   //MA2 = 0.传输地址时使用这个地址

.end  =  NGCS2 + 1,

.flags = IORESOURCE_MEM,

},

[1] = {

.start = NGCS2 + 4,  //MA2 = 1.传输数据时使用这个地址

.end = NGCS2 + 4 + 1,

.flags = IORESOURCE_MEM,

},

[2] = {

.start = ENT14,  //中断号

.end = ENT14,

.flags = IORESOURCE_IRQ,

}

};

static struct dm9000_plat_data xx_dm9k_platdata = {

.flags = DM9000_PLATF_16BITONLY,

};

static int __init

dm9000_init(void)

{

BSP_WR32((GPIO2_BASE|GPIO_IPOL), (1<<8));

printk(KERN_INFO "%s Ethernet Driver\n", CARDNAME);

platform_driver_register(&dm9000_driver); /* search board and register */

platform_device_register(&nl_dm9k_device); //注册设备

return 0;

}

static void __exit

dm9000_cleanup(void)

{

platform_driver_unregister(&dm9000_driver); //注销驱动

platform_device_unregister(&nl_dm9k_device); //注销设备

}