0,0 → 1,127 |
/* |
* ioport.h Definitions of routines for detecting, reserving and |
* allocating system resources. |
* |
* Authors: Linus Torvalds |
*/ |
|
#ifndef _LINUX_IOPORT_H |
#define _LINUX_IOPORT_H |
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#ifndef __ASSEMBLY__ |
#include <linux/compiler.h> |
#include <linux/types.h> |
/* |
* Resources are tree-like, allowing |
* nesting etc.. |
*/ |
struct resource { |
resource_size_t start; |
resource_size_t end; |
const char *name; |
unsigned long flags; |
struct resource *parent, *sibling, *child; |
}; |
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struct resource_list { |
struct resource_list *next; |
struct resource *res; |
struct pci_dev *dev; |
}; |
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/* |
* IO resources have these defined flags. |
*/ |
#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ |
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#define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */ |
#define IORESOURCE_IO 0x00000100 |
#define IORESOURCE_MEM 0x00000200 |
#define IORESOURCE_IRQ 0x00000400 |
#define IORESOURCE_DMA 0x00000800 |
#define IORESOURCE_BUS 0x00001000 |
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#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */ |
#define IORESOURCE_READONLY 0x00004000 |
#define IORESOURCE_CACHEABLE 0x00008000 |
#define IORESOURCE_RANGELENGTH 0x00010000 |
#define IORESOURCE_SHADOWABLE 0x00020000 |
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#define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */ |
#define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */ |
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#define IORESOURCE_MEM_64 0x00100000 |
#define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */ |
#define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */ |
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#define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */ |
#define IORESOURCE_DISABLED 0x10000000 |
#define IORESOURCE_UNSET 0x20000000 |
#define IORESOURCE_AUTO 0x40000000 |
#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ |
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/* PnP IRQ specific bits (IORESOURCE_BITS) */ |
#define IORESOURCE_IRQ_HIGHEDGE (1<<0) |
#define IORESOURCE_IRQ_LOWEDGE (1<<1) |
#define IORESOURCE_IRQ_HIGHLEVEL (1<<2) |
#define IORESOURCE_IRQ_LOWLEVEL (1<<3) |
#define IORESOURCE_IRQ_SHAREABLE (1<<4) |
#define IORESOURCE_IRQ_OPTIONAL (1<<5) |
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/* PnP DMA specific bits (IORESOURCE_BITS) */ |
#define IORESOURCE_DMA_TYPE_MASK (3<<0) |
#define IORESOURCE_DMA_8BIT (0<<0) |
#define IORESOURCE_DMA_8AND16BIT (1<<0) |
#define IORESOURCE_DMA_16BIT (2<<0) |
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#define IORESOURCE_DMA_MASTER (1<<2) |
#define IORESOURCE_DMA_BYTE (1<<3) |
#define IORESOURCE_DMA_WORD (1<<4) |
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#define IORESOURCE_DMA_SPEED_MASK (3<<6) |
#define IORESOURCE_DMA_COMPATIBLE (0<<6) |
#define IORESOURCE_DMA_TYPEA (1<<6) |
#define IORESOURCE_DMA_TYPEB (2<<6) |
#define IORESOURCE_DMA_TYPEF (3<<6) |
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/* PnP memory I/O specific bits (IORESOURCE_BITS) */ |
#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ |
#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ |
#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ |
#define IORESOURCE_MEM_TYPE_MASK (3<<3) |
#define IORESOURCE_MEM_8BIT (0<<3) |
#define IORESOURCE_MEM_16BIT (1<<3) |
#define IORESOURCE_MEM_8AND16BIT (2<<3) |
#define IORESOURCE_MEM_32BIT (3<<3) |
#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ |
#define IORESOURCE_MEM_EXPANSIONROM (1<<6) |
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/* PnP I/O specific bits (IORESOURCE_BITS) */ |
#define IORESOURCE_IO_16BIT_ADDR (1<<0) |
#define IORESOURCE_IO_FIXED (1<<1) |
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/* PCI ROM control bits (IORESOURCE_BITS) */ |
#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ |
#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */ |
#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */ |
#define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */ |
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/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ |
#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ |
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/* PC/ISA/whatever - the normal PC address spaces: IO and memory */ |
extern struct resource ioport_resource; |
extern struct resource iomem_resource; |
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static inline resource_size_t resource_size(const struct resource *res) |
{ |
return res->end - res->start + 1; |
} |
static inline unsigned long resource_type(const struct resource *res) |
{ |
return res->flags & IORESOURCE_TYPE_BITS; |
} |
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#endif /* __ASSEMBLY__ */ |
#endif /* _LINUX_IOPORT_H */ |