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resource: add resource_type() and IORESOURCE_TYPE_BITS

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Add resource_type() and IORESOURCE_TYPE_BITS.  They make it easier to add
more resource types without having to rewrite tons of code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Magnus Damm
2008-10-15 22:05:15 -07:00
committed by Linus Torvalds
parent c26ec88ea8
commit c9f66169f1
2 changed files with 23 additions and 15 deletions
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7
include/linux/ioport.h
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@ -34,7 +34,8 @@ struct resource_list {
*/
#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
#define IORESOURCE_IO 0x00000100 /* Resource type */
#define IORESOURCE_TYPE_BITS 0x00000f00 /* Resource type */
#define IORESOURCE_IO 0x00000100
#define IORESOURCE_MEM 0x00000200
#define IORESOURCE_IRQ 0x00000400
#define IORESOURCE_DMA 0x00000800
@ -126,6 +127,10 @@ static inline resource_size_t resource_size(struct resource *res)
{
return res->end - res->start + 1;
}
static inline unsigned long resource_type(struct resource *res)
{
return res->flags & IORESOURCE_TYPE_BITS;
}
/* Convenience shorthand with allocation */
#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))