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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2011-07-25 17:13:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-07-25 20:57:14 -0700 |
| commit | a0e44d4a7a3935afe425ec8dd1a5b63895e1f9c3 (patch) | |
| tree | ef31b7fe165d9777e93beacb191adbef280c21b6 /include/linux/ioport.h | |
| parent | ae891a1b93bf62e9aaa116a7a71312375047fc9f (diff) | |
| download | op-kernel-dev-a0e44d4a7a3935afe425ec8dd1a5b63895e1f9c3.zip op-kernel-dev-a0e44d4a7a3935afe425ec8dd1a5b63895e1f9c3.tar.gz | |
include/linux/ioport.h: new helper to define common struct resource constructs
Resource definitions that just define start, end and flags =
IORESOURCE_MEM or IORESOURCE_IRQ (with start=end) are quite common. So
introduce a shortcut for them. For completeness add macros for
IORESOURCE_DMA and IORESOURCE_IO, too and also make available a set of
macros to specify named resources of all types which are less common.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/ioport.h')
| -rw-r--r-- | include/linux/ioport.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h index e9bb22c..c2ebfe6 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -109,6 +109,36 @@ struct resource_list { /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ + +/* helpers to define resources */ +#define DEFINE_RES_NAMED(_start, _size, _name, _flags) \ + { \ + .start = (_start), \ + .end = (_start) + (_size) - 1, \ + .name = (_name), \ + .flags = (_flags), \ + } + +#define DEFINE_RES_IO_NAMED(_start, _size, _name) \ + DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO) +#define DEFINE_RES_IO(_start, _size) \ + DEFINE_RES_IO_NAMED((_start), (_size), NULL) + +#define DEFINE_RES_MEM_NAMED(_start, _size, _name) \ + DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_MEM) +#define DEFINE_RES_MEM(_start, _size) \ + DEFINE_RES_MEM_NAMED((_start), (_size), NULL) + +#define DEFINE_RES_IRQ_NAMED(_irq, _name) \ + DEFINE_RES_NAMED((_irq), 1, (_name), IORESOURCE_IRQ) +#define DEFINE_RES_IRQ(_irq) \ + DEFINE_RES_IRQ_NAMED((_irq), NULL) + +#define DEFINE_RES_DMA_NAMED(_dma, _name) \ + DEFINE_RES_NAMED((_dma), 1, (_name), IORESOURCE_DMA) +#define DEFINE_RES_DMA(_dma) \ + DEFINE_RES_DMA_NAMED((_dma), NULL) + /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ extern struct resource ioport_resource; extern struct resource iomem_resource; |
