source: GPL/trunk/include/linux/ioport.h

Last change on this file was 772, checked in by David Azarewicz, 4 months ago

Merge in changes from 6.6-LTS branch.
Fixed additional 25+ problems.
File size: 4.4 KB
Line 
1/* $Id: ioport.h,v 1.1.1.1 2003/07/02 13:57:00 eleph Exp $ */
2
3/*
4 * ioport.h Definitions of routines for detecting, reserving and
5 * allocating system resources.
6 *
7 * Authors: Linus Torvalds
8 */
9
10#ifndef _LINUX_IOPORT_H
11#define _LINUX_IOPORT_H
12
13#include <linux/types.h>
14#include <linux/minmax.h>
15
16/*
17 * Resources are tree-like, allowing
18 * nesting etc..
19 */
20struct resource {
21 const char *name;
22 unsigned long start, end;
23 unsigned long flags;
24 struct resource *parent, *sibling, *child;
25};
26
27/*
28 * IO resources have these defined flags.
29 */
30#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
31
32#define IORESOURCE_IO 0x00000100 /* Resource type */
33#define IORESOURCE_MEM 0x00000200
34#define IORESOURCE_IRQ 0x00000400
35#define IORESOURCE_DMA 0x00000800
36
37#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
38#define IORESOURCE_READONLY 0x00002000
39#define IORESOURCE_CACHEABLE 0x00004000
40#define IORESOURCE_RANGELENGTH 0x00008000
41#define IORESOURCE_SHADOWABLE 0x00010000
42
43#define IORESOURCE_UNSET 0x20000000
44#define IORESOURCE_AUTO 0x40000000
45#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
46
47/* ISA PnP IRQ specific bits (IORESOURCE_BITS) */
48#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
49#define IORESOURCE_IRQ_LOWEDGE (1<<1)
50#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
51#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
52
53/* ISA PnP DMA specific bits (IORESOURCE_BITS) */
54#define IORESOURCE_DMA_TYPE_MASK (3<<0)
55#define IORESOURCE_DMA_8BIT (0<<0)
56#define IORESOURCE_DMA_8AND16BIT (1<<0)
57#define IORESOURCE_DMA_16BIT (2<<0)
58
59#define IORESOURCE_DMA_MASTER (1<<2)
60#define IORESOURCE_DMA_BYTE (1<<3)
61#define IORESOURCE_DMA_WORD (1<<4)
62
63#define IORESOURCE_DMA_SPEED_MASK (3<<6)
64#define IORESOURCE_DMA_COMPATIBLE (0<<6)
65#define IORESOURCE_DMA_TYPEA (1<<6)
66#define IORESOURCE_DMA_TYPEB (2<<6)
67#define IORESOURCE_DMA_TYPEF (3<<6)
68
69/* ISA PnP memory I/O specific bits (IORESOURCE_BITS) */
70#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
71#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
72#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
73#define IORESOURCE_MEM_TYPE_MASK (3<<3)
74#define IORESOURCE_MEM_8BIT (0<<3)
75#define IORESOURCE_MEM_16BIT (1<<3)
76#define IORESOURCE_MEM_8AND16BIT (2<<3)
77#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
78#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
79
80/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
81extern struct resource ioport_resource;
82extern struct resource iomem_resource;
83
84extern int get_resource_list(struct resource *, char *buf, int size);
85
86extern int request_resource(struct resource *root, struct resource *newres);
87extern int release_resource(struct resource *newres);
88extern int allocate_resource(struct resource *root, struct resource *newres,
89 unsigned long size,
90 unsigned long min, unsigned long max,
91 unsigned long align);
92
93/* Convenience shorthand with allocation */
94#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name))
95#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name))
96
97extern struct resource * __request_region(struct resource *, unsigned long start, unsigned long n, const char *name);
98
99/* Compatibility cruft */
100#define check_region(start,n) __check_region(&ioport_resource, (start), (n))
101#define release_region(start,n) __release_region(&ioport_resource, (start), (n))
102#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n))
103#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
104
105extern int __check_region(struct resource *, unsigned long, unsigned long);
106extern void __release_region(struct resource *, unsigned long, unsigned long);
107
108#define get_ioport_list(buf) get_resource_list(&ioport_resource, buf, PAGE_SIZE)
109#define get_mem_list(buf) get_resource_list(&iomem_resource, buf, PAGE_SIZE)
110
111#define HAVE_AUTOIRQ
112extern void autoirq_setup(int waittime);
113extern int autoirq_report(int waittime);
114
115extern struct resource * __devm_request_region(struct device *dev,
116 struct resource *parent, resource_size_t start,
117 resource_size_t n, const char *name);
118
119#define devm_request_region(dev,start,n,name) \
120 __devm_request_region(dev, &ioport_resource, (start), (n), (name))
121#endif /* _LINUX_IOPORT_H */
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