有人普及一下驱动里面的resource么？
struct resource {
resource_size_t start;
resource_size_t end;
const char *name;
unsigned long flags;
struct resource *parent, *sibling, *child;
};
这里start ，end 是什么的地址？ 是怎么定义值呢？
flags：
/*
* IO resources have these defined flags.
*/
#define IORESOURCE_BITS0x000000ff/* Bus-specific bits */
#define IORESOURCE_TYPE_BITS0x00001f00/* Resource type */
#define IORESOURCE_IO0x00000100
#define IORESOURCE_MEM0x00000200
#define IORESOURCE_IRQ0x00000400
#define IORESOURCE_DMA0x00000800
#define IORESOURCE_BUS0x00001000
#define IORESOURCE_PREFETCH0x00002000/* No side effects */
#define IORESOURCE_READONLY0x00004000
#define IORESOURCE_CACHEABLE0x00008000
#define IORESOURCE_RANGELENGTH0x00010000
#define IORESOURCE_SHADOWABLE0x00020000
#define IORESOURCE_SIZEALIGN0x00040000/* size indicates alignment */
#define IORESOURCE_STARTALIGN0x00080000/* start field is alignment */
#define IORESOURCE_MEM_640x00100000
#define IORESOURCE_WINDOW0x00200000/* forwarded by bridge */
#define IORESOURCE_MUXED0x00400000/* Resource is software muxed */
#define IORESOURCE_EXCLUSIVE0x08000000/* Userland may not map this resource */
#define IORESOURCE_DISABLED0x10000000
#define IORESOURCE_UNSET0x20000000
#define IORESOURCE_AUTO0x40000000
#define IORESOURCE_BUSY0x80000000/* Driver has marked this resource busy */
这里flags有这么多，但是常用的好像不多， 怎么选取flag呢？
3ks
[解决办法]
这些东西应该一看就懂啊。
[解决办法]
这个resource里的start和end是你具体设备 也就是硬件对应的物理地址，网上这样的内容很多。可以看看
[解决办法]
设备IO寄存器,IO内存等物理地址.
