From a0e44d4a7a3935afe425ec8dd1a5b63895e1f9c3 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Mon, 25 Jul 2011 17:13:00 -0700 Subject: [PATCH] include/linux/ioport.h: new helper to define common struct resource constructs MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/ioport.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index e9bb22cba764..c2ebfe66177c 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; -- 2.34.1