Rev 422 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * ioport.h Definitions of routines for detecting, reserving and |
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| 3 | * allocating system resources. |
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| 4 | * |
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| 5 | * Authors: Linus Torvalds |
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| 6 | */ |
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| 7 | |||
| 8 | #ifndef _LINUX_IOPORT_H |
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| 9 | #define _LINUX_IOPORT_H |
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| 10 | |||
| 11 | #include <linux/compiler.h> |
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| 12 | /* |
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| 13 | * Resources are tree-like, allowing |
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| 14 | * nesting etc.. |
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| 15 | */ |
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| 16 | struct resource { |
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| 17 | const char *name; |
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| 18 | unsigned long start, end; |
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| 19 | unsigned long flags; |
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| 20 | struct resource *parent, *sibling, *child; |
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| 21 | }; |
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| 22 | |||
| 23 | struct resource_list { |
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| 24 | struct resource_list *next; |
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| 25 | struct resource *res; |
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| 26 | struct pci_dev *dev; |
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| 27 | }; |
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| 28 | |||
| 29 | /* |
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| 30 | * IO resources have these defined flags. |
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| 31 | */ |
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| 32 | #define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ |
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| 33 | |||
| 34 | #define IORESOURCE_IO 0x00000100 /* Resource type */ |
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| 35 | #define IORESOURCE_MEM 0x00000200 |
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| 36 | #define IORESOURCE_IRQ 0x00000400 |
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| 37 | #define IORESOURCE_DMA 0x00000800 |
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| 38 | |||
| 39 | #define IORESOURCE_PREFETCH 0x00001000 /* No side effects */ |
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| 40 | #define IORESOURCE_READONLY 0x00002000 |
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| 41 | #define IORESOURCE_CACHEABLE 0x00004000 |
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| 42 | #define IORESOURCE_RANGELENGTH 0x00008000 |
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| 43 | #define IORESOURCE_SHADOWABLE 0x00010000 |
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| 44 | #define IORESOURCE_BUS_HAS_VGA 0x00080000 |
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| 45 | |||
| 46 | #define IORESOURCE_DISABLED 0x10000000 |
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| 47 | #define IORESOURCE_UNSET 0x20000000 |
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| 48 | #define IORESOURCE_AUTO 0x40000000 |
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| 49 | #define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ |
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| 50 | |||
| 51 | /* ISA PnP IRQ specific bits (IORESOURCE_BITS) */ |
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| 52 | #define IORESOURCE_IRQ_HIGHEDGE (1<<0) |
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| 53 | #define IORESOURCE_IRQ_LOWEDGE (1<<1) |
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| 54 | #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) |
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| 55 | #define IORESOURCE_IRQ_LOWLEVEL (1<<3) |
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| 56 | |||
| 57 | /* ISA PnP DMA specific bits (IORESOURCE_BITS) */ |
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| 58 | #define IORESOURCE_DMA_TYPE_MASK (3<<0) |
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| 59 | #define IORESOURCE_DMA_8BIT (0<<0) |
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| 60 | #define IORESOURCE_DMA_8AND16BIT (1<<0) |
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| 61 | #define IORESOURCE_DMA_16BIT (2<<0) |
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| 62 | |||
| 63 | #define IORESOURCE_DMA_MASTER (1<<2) |
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| 64 | #define IORESOURCE_DMA_BYTE (1<<3) |
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| 65 | #define IORESOURCE_DMA_WORD (1<<4) |
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| 66 | |||
| 67 | #define IORESOURCE_DMA_SPEED_MASK (3<<6) |
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| 68 | #define IORESOURCE_DMA_COMPATIBLE (0<<6) |
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| 69 | #define IORESOURCE_DMA_TYPEA (1<<6) |
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| 70 | #define IORESOURCE_DMA_TYPEB (2<<6) |
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| 71 | #define IORESOURCE_DMA_TYPEF (3<<6) |
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| 72 | |||
| 73 | /* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */ |
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| 74 | #define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ |
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| 75 | #define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ |
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| 76 | #define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ |
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| 77 | #define IORESOURCE_MEM_TYPE_MASK (3<<3) |
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| 78 | #define IORESOURCE_MEM_8BIT (0<<3) |
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| 79 | #define IORESOURCE_MEM_16BIT (1<<3) |
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| 80 | #define IORESOURCE_MEM_8AND16BIT (2<<3) |
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| 81 | #define IORESOURCE_MEM_32BIT (3<<3) |
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| 82 | #define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ |
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| 83 | #define IORESOURCE_MEM_EXPANSIONROM (1<<6) |
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| 84 | |||
| 85 | /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ |
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| 86 | extern struct resource ioport_resource; |
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| 87 | extern struct resource iomem_resource; |
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| 88 | |||
| 89 | extern int get_resource_list(struct resource *, char *buf, int size); |
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| 90 | |||
| 91 | extern int request_resource(struct resource *root, struct resource *new); |
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| 92 | extern struct resource * ____request_resource(struct resource *root, struct resource *new); |
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| 93 | extern int release_resource(struct resource *new); |
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| 94 | extern int insert_resource(struct resource *parent, struct resource *new); |
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| 95 | extern int allocate_resource(struct resource *root, struct resource *new, |
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| 96 | unsigned long size, |
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| 97 | unsigned long min, unsigned long max, |
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| 98 | unsigned long align, |
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| 99 | void (*alignf)(void *, struct resource *, |
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| 100 | unsigned long, unsigned long), |
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| 101 | void *alignf_data); |
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| 102 | |||
| 103 | /* Convenience shorthand with allocation */ |
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| 104 | #define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name)) |
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| 105 | #define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name)) |
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| 106 | #define rename_region(region, newname) do { (region)->name = (newname); } while (0) |
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| 107 | |||
| 108 | extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name); |
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| 109 | |||
| 110 | /* Compatibility cruft */ |
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| 111 | #define release_region(start,n) __release_region(&ioport_resource, (start), (n)) |
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| 112 | #define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n)) |
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| 113 | #define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n)) |
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| 114 | |||
| 115 | extern int __check_region(struct resource *, unsigned long, unsigned long); |
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| 116 | extern void __release_region(struct resource *, unsigned long, unsigned long); |
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| 117 | |||
| 118 | static inline int __deprecated check_region(unsigned long s, unsigned long n) |
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| 119 | { |
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| 120 | return __check_region(&ioport_resource, s, n); |
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| 121 | } |
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| 122 | #endif /* _LINUX_IOPORT_H */ |