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-rw-r--r--include/linux/ioport.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
new file mode 100644
index 000000000000..18d010bee635
--- /dev/null
+++ b/include/linux/ioport.h
@@ -0,0 +1,127 @@
1/*
2 * ioport.h Definitions of routines for detecting, reserving and
3 * allocating system resources.
4 *
5 * Authors: Linus Torvalds
6 */
7
8#ifndef _LINUX_IOPORT_H
9#define _LINUX_IOPORT_H
10
11#include <linux/compiler.h>
12/*
13 * Resources are tree-like, allowing
14 * nesting etc..
15 */
16struct resource {
17 const char *name;
18 unsigned long start, end;
19 unsigned long flags;
20 struct resource *parent, *sibling, *child;
21};
22
23struct resource_list {
24 struct resource_list *next;
25 struct resource *res;
26 struct pci_dev *dev;
27};
28
29/*
30 * IO resources have these defined flags.
31 */
32#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
33
34#define IORESOURCE_IO 0x00000100 /* Resource type */
35#define IORESOURCE_MEM 0x00000200
36#define IORESOURCE_IRQ 0x00000400
37#define IORESOURCE_DMA 0x00000800
38
39#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
40#define IORESOURCE_READONLY 0x00002000
41#define IORESOURCE_CACHEABLE 0x00004000
42#define IORESOURCE_RANGELENGTH 0x00008000
43#define IORESOURCE_SHADOWABLE 0x00010000
44#define IORESOURCE_BUS_HAS_VGA 0x00080000
45
46#define IORESOURCE_DISABLED 0x10000000
47#define IORESOURCE_UNSET 0x20000000
48#define IORESOURCE_AUTO 0x40000000
49#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
50
51/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
52#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
53#define IORESOURCE_IRQ_LOWEDGE (1<<1)
54#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
55#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
56
57/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
58#define IORESOURCE_DMA_TYPE_MASK (3<<0)
59#define IORESOURCE_DMA_8BIT (0<<0)
60#define IORESOURCE_DMA_8AND16BIT (1<<0)
61#define IORESOURCE_DMA_16BIT (2<<0)
62
63#define IORESOURCE_DMA_MASTER (1<<2)
64#define IORESOURCE_DMA_BYTE (1<<3)
65#define IORESOURCE_DMA_WORD (1<<4)
66
67#define IORESOURCE_DMA_SPEED_MASK (3<<6)
68#define IORESOURCE_DMA_COMPATIBLE (0<<6)
69#define IORESOURCE_DMA_TYPEA (1<<6)
70#define IORESOURCE_DMA_TYPEB (2<<6)
71#define IORESOURCE_DMA_TYPEF (3<<6)
72
73/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
74#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
75#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
76#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
77#define IORESOURCE_MEM_TYPE_MASK (3<<3)
78#define IORESOURCE_MEM_8BIT (0<<3)
79#define IORESOURCE_MEM_16BIT (1<<3)
80#define IORESOURCE_MEM_8AND16BIT (2<<3)
81#define IORESOURCE_MEM_32BIT (3<<3)
82#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
83#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
84
85/* PCI ROM control bits (IORESOURCE_BITS) */
86#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
87#define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */
88#define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */
89
90/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
91extern struct resource ioport_resource;
92extern struct resource iomem_resource;
93
94extern int request_resource(struct resource *root, struct resource *new);
95extern struct resource * ____request_resource(struct resource *root, struct resource *new);
96extern int release_resource(struct resource *new);
97extern int insert_resource(struct resource *parent, struct resource *new);
98extern int allocate_resource(struct resource *root, struct resource *new,
99 unsigned long size,
100 unsigned long min, unsigned long max,
101 unsigned long align,
102 void (*alignf)(void *, struct resource *,
103 unsigned long, unsigned long),
104 void *alignf_data);
105int adjust_resource(struct resource *res, unsigned long start,
106 unsigned long size);
107
108/* Convenience shorthand with allocation */
109#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))
110#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name))
111#define rename_region(region, newname) do { (region)->name = (newname); } while (0)
112
113extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name);
114
115/* Compatibility cruft */
116#define release_region(start,n) __release_region(&ioport_resource, (start), (n))
117#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n))
118#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
119
120extern int __check_region(struct resource *, unsigned long, unsigned long);
121extern void __release_region(struct resource *, unsigned long, unsigned long);
122
123static inline int __deprecated check_region(unsigned long s, unsigned long n)
124{
125 return __check_region(&ioport_resource, s, n);
126}
127#endif /* _LINUX_IOPORT_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-27 00:28:17 -0500