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1 | /* |
1 | /* |
2 | * ioport.h Definitions of routines for detecting, reserving and |
2 | * ioport.h Definitions of routines for detecting, reserving and |
3 | * allocating system resources. |
3 | * allocating system resources. |
4 | * |
4 | * |
5 | * Authors: Linus Torvalds |
5 | * Authors: Linus Torvalds |
6 | */ |
6 | */ |
7 | 7 | ||
8 | #ifndef _LINUX_IOPORT_H |
8 | #ifndef _LINUX_IOPORT_H |
9 | #define _LINUX_IOPORT_H |
9 | #define _LINUX_IOPORT_H |
10 | 10 | ||
11 | #ifndef __ASSEMBLY__ |
11 | #ifndef __ASSEMBLY__ |
12 | #include |
12 | #include |
13 | #include |
13 | #include |
14 | /* |
14 | /* |
15 | * Resources are tree-like, allowing |
15 | * Resources are tree-like, allowing |
16 | * nesting etc.. |
16 | * nesting etc.. |
17 | */ |
17 | */ |
18 | struct resource { |
18 | struct resource { |
19 | resource_size_t start; |
19 | resource_size_t start; |
20 | resource_size_t end; |
20 | resource_size_t end; |
21 | const char *name; |
21 | const char *name; |
22 | unsigned long flags; |
22 | unsigned long flags; |
23 | struct resource *parent, *sibling, *child; |
23 | struct resource *parent, *sibling, *child; |
24 | }; |
24 | }; |
25 | - | ||
26 | struct resource_list { |
- | |
27 | struct resource_list *next; |
- | |
28 | struct resource *res; |
- | |
29 | struct pci_dev *dev; |
- | |
30 | }; |
- | |
31 | 25 | ||
32 | /* |
26 | /* |
33 | * IO resources have these defined flags. |
27 | * IO resources have these defined flags. |
34 | */ |
28 | */ |
35 | #define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ |
29 | #define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */ |
36 | 30 | ||
37 | #define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */ |
31 | #define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */ |
38 | #define IORESOURCE_IO 0x00000100 /* PCI/ISA I/O ports */ |
32 | #define IORESOURCE_IO 0x00000100 /* PCI/ISA I/O ports */ |
39 | #define IORESOURCE_MEM 0x00000200 |
33 | #define IORESOURCE_MEM 0x00000200 |
40 | #define IORESOURCE_REG 0x00000300 /* Register offsets */ |
34 | #define IORESOURCE_REG 0x00000300 /* Register offsets */ |
41 | #define IORESOURCE_IRQ 0x00000400 |
35 | #define IORESOURCE_IRQ 0x00000400 |
42 | #define IORESOURCE_DMA 0x00000800 |
36 | #define IORESOURCE_DMA 0x00000800 |
43 | #define IORESOURCE_BUS 0x00001000 |
37 | #define IORESOURCE_BUS 0x00001000 |
44 | 38 | ||
45 | #define IORESOURCE_PREFETCH 0x00002000 /* No side effects */ |
39 | #define IORESOURCE_PREFETCH 0x00002000 /* No side effects */ |
46 | #define IORESOURCE_READONLY 0x00004000 |
40 | #define IORESOURCE_READONLY 0x00004000 |
47 | #define IORESOURCE_CACHEABLE 0x00008000 |
41 | #define IORESOURCE_CACHEABLE 0x00008000 |
48 | #define IORESOURCE_RANGELENGTH 0x00010000 |
42 | #define IORESOURCE_RANGELENGTH 0x00010000 |
49 | #define IORESOURCE_SHADOWABLE 0x00020000 |
43 | #define IORESOURCE_SHADOWABLE 0x00020000 |
50 | 44 | ||
51 | #define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */ |
45 | #define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */ |
52 | #define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */ |
46 | #define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */ |
53 | 47 | ||
54 | #define IORESOURCE_MEM_64 0x00100000 |
48 | #define IORESOURCE_MEM_64 0x00100000 |
55 | #define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */ |
49 | #define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */ |
56 | #define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */ |
50 | #define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */ |
57 | 51 | ||
58 | #define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */ |
52 | #define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */ |
59 | #define IORESOURCE_DISABLED 0x10000000 |
53 | #define IORESOURCE_DISABLED 0x10000000 |
60 | #define IORESOURCE_UNSET 0x20000000 /* No address assigned yet */ |
54 | #define IORESOURCE_UNSET 0x20000000 /* No address assigned yet */ |
61 | #define IORESOURCE_AUTO 0x40000000 |
55 | #define IORESOURCE_AUTO 0x40000000 |
62 | #define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ |
56 | #define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */ |
63 | 57 | ||
64 | /* PnP IRQ specific bits (IORESOURCE_BITS) */ |
58 | /* PnP IRQ specific bits (IORESOURCE_BITS) */ |
65 | #define IORESOURCE_IRQ_HIGHEDGE (1<<0) |
59 | #define IORESOURCE_IRQ_HIGHEDGE (1<<0) |
66 | #define IORESOURCE_IRQ_LOWEDGE (1<<1) |
60 | #define IORESOURCE_IRQ_LOWEDGE (1<<1) |
67 | #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) |
61 | #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) |
68 | #define IORESOURCE_IRQ_LOWLEVEL (1<<3) |
62 | #define IORESOURCE_IRQ_LOWLEVEL (1<<3) |
69 | #define IORESOURCE_IRQ_SHAREABLE (1<<4) |
63 | #define IORESOURCE_IRQ_SHAREABLE (1<<4) |
70 | #define IORESOURCE_IRQ_OPTIONAL (1<<5) |
64 | #define IORESOURCE_IRQ_OPTIONAL (1<<5) |
71 | 65 | ||
72 | /* PnP DMA specific bits (IORESOURCE_BITS) */ |
66 | /* PnP DMA specific bits (IORESOURCE_BITS) */ |
73 | #define IORESOURCE_DMA_TYPE_MASK (3<<0) |
67 | #define IORESOURCE_DMA_TYPE_MASK (3<<0) |
74 | #define IORESOURCE_DMA_8BIT (0<<0) |
68 | #define IORESOURCE_DMA_8BIT (0<<0) |
75 | #define IORESOURCE_DMA_8AND16BIT (1<<0) |
69 | #define IORESOURCE_DMA_8AND16BIT (1<<0) |
76 | #define IORESOURCE_DMA_16BIT (2<<0) |
70 | #define IORESOURCE_DMA_16BIT (2<<0) |
77 | 71 | ||
78 | #define IORESOURCE_DMA_MASTER (1<<2) |
72 | #define IORESOURCE_DMA_MASTER (1<<2) |
79 | #define IORESOURCE_DMA_BYTE (1<<3) |
73 | #define IORESOURCE_DMA_BYTE (1<<3) |
80 | #define IORESOURCE_DMA_WORD (1<<4) |
74 | #define IORESOURCE_DMA_WORD (1<<4) |
81 | 75 | ||
82 | #define IORESOURCE_DMA_SPEED_MASK (3<<6) |
76 | #define IORESOURCE_DMA_SPEED_MASK (3<<6) |
83 | #define IORESOURCE_DMA_COMPATIBLE (0<<6) |
77 | #define IORESOURCE_DMA_COMPATIBLE (0<<6) |
84 | #define IORESOURCE_DMA_TYPEA (1<<6) |
78 | #define IORESOURCE_DMA_TYPEA (1<<6) |
85 | #define IORESOURCE_DMA_TYPEB (2<<6) |
79 | #define IORESOURCE_DMA_TYPEB (2<<6) |
86 | #define IORESOURCE_DMA_TYPEF (3<<6) |
80 | #define IORESOURCE_DMA_TYPEF (3<<6) |
87 | 81 | ||
88 | /* PnP memory I/O specific bits (IORESOURCE_BITS) */ |
82 | /* PnP memory I/O specific bits (IORESOURCE_BITS) */ |
89 | #define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ |
83 | #define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */ |
90 | #define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ |
84 | #define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */ |
91 | #define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ |
85 | #define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */ |
92 | #define IORESOURCE_MEM_TYPE_MASK (3<<3) |
86 | #define IORESOURCE_MEM_TYPE_MASK (3<<3) |
93 | #define IORESOURCE_MEM_8BIT (0<<3) |
87 | #define IORESOURCE_MEM_8BIT (0<<3) |
94 | #define IORESOURCE_MEM_16BIT (1<<3) |
88 | #define IORESOURCE_MEM_16BIT (1<<3) |
95 | #define IORESOURCE_MEM_8AND16BIT (2<<3) |
89 | #define IORESOURCE_MEM_8AND16BIT (2<<3) |
96 | #define IORESOURCE_MEM_32BIT (3<<3) |
90 | #define IORESOURCE_MEM_32BIT (3<<3) |
97 | #define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ |
91 | #define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */ |
98 | #define IORESOURCE_MEM_EXPANSIONROM (1<<6) |
92 | #define IORESOURCE_MEM_EXPANSIONROM (1<<6) |
99 | 93 | ||
100 | /* PnP I/O specific bits (IORESOURCE_BITS) */ |
94 | /* PnP I/O specific bits (IORESOURCE_BITS) */ |
101 | #define IORESOURCE_IO_16BIT_ADDR (1<<0) |
95 | #define IORESOURCE_IO_16BIT_ADDR (1<<0) |
102 | #define IORESOURCE_IO_FIXED (1<<1) |
96 | #define IORESOURCE_IO_FIXED (1<<1) |
103 | #define IORESOURCE_IO_SPARSE (1<<2) |
97 | #define IORESOURCE_IO_SPARSE (1<<2) |
104 | 98 | ||
105 | /* PCI ROM control bits (IORESOURCE_BITS) */ |
99 | /* PCI ROM control bits (IORESOURCE_BITS) */ |
106 | #define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ |
100 | #define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ |
107 | #define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */ |
101 | #define IORESOURCE_ROM_SHADOW (1<<1) /* ROM is copy at C000:0 */ |
108 | #define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */ |
102 | #define IORESOURCE_ROM_COPY (1<<2) /* ROM is alloc'd copy, resource field overlaid */ |
109 | #define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */ |
103 | #define IORESOURCE_ROM_BIOS_COPY (1<<3) /* ROM is BIOS copy, resource field overlaid */ |
110 | 104 | ||
111 | /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ |
105 | /* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */ |
112 | #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ |
106 | #define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */ |
113 | 107 | ||
114 | 108 | ||
115 | /* helpers to define resources */ |
109 | /* helpers to define resources */ |
116 | #define DEFINE_RES_NAMED(_start, _size, _name, _flags) \ |
110 | #define DEFINE_RES_NAMED(_start, _size, _name, _flags) \ |
117 | { \ |
111 | { \ |
118 | .start = (_start), \ |
112 | .start = (_start), \ |
119 | .end = (_start) + (_size) - 1, \ |
113 | .end = (_start) + (_size) - 1, \ |
120 | .name = (_name), \ |
114 | .name = (_name), \ |
121 | .flags = (_flags), \ |
115 | .flags = (_flags), \ |
122 | } |
116 | } |
123 | 117 | ||
124 | #define DEFINE_RES_IO_NAMED(_start, _size, _name) \ |
118 | #define DEFINE_RES_IO_NAMED(_start, _size, _name) \ |
125 | DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO) |
119 | DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO) |
126 | #define DEFINE_RES_IO(_start, _size) \ |
120 | #define DEFINE_RES_IO(_start, _size) \ |
127 | DEFINE_RES_IO_NAMED((_start), (_size), NULL) |
121 | DEFINE_RES_IO_NAMED((_start), (_size), NULL) |
128 | 122 | ||
129 | #define DEFINE_RES_MEM_NAMED(_start, _size, _name) \ |
123 | #define DEFINE_RES_MEM_NAMED(_start, _size, _name) \ |
130 | DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_MEM) |
124 | DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_MEM) |
131 | #define DEFINE_RES_MEM(_start, _size) \ |
125 | #define DEFINE_RES_MEM(_start, _size) \ |
132 | DEFINE_RES_MEM_NAMED((_start), (_size), NULL) |
126 | DEFINE_RES_MEM_NAMED((_start), (_size), NULL) |
133 | 127 | ||
134 | #define DEFINE_RES_IRQ_NAMED(_irq, _name) \ |
128 | #define DEFINE_RES_IRQ_NAMED(_irq, _name) \ |
135 | DEFINE_RES_NAMED((_irq), 1, (_name), IORESOURCE_IRQ) |
129 | DEFINE_RES_NAMED((_irq), 1, (_name), IORESOURCE_IRQ) |
136 | #define DEFINE_RES_IRQ(_irq) \ |
130 | #define DEFINE_RES_IRQ(_irq) \ |
137 | DEFINE_RES_IRQ_NAMED((_irq), NULL) |
131 | DEFINE_RES_IRQ_NAMED((_irq), NULL) |
138 | 132 | ||
139 | #define DEFINE_RES_DMA_NAMED(_dma, _name) \ |
133 | #define DEFINE_RES_DMA_NAMED(_dma, _name) \ |
140 | DEFINE_RES_NAMED((_dma), 1, (_name), IORESOURCE_DMA) |
134 | DEFINE_RES_NAMED((_dma), 1, (_name), IORESOURCE_DMA) |
141 | #define DEFINE_RES_DMA(_dma) \ |
135 | #define DEFINE_RES_DMA(_dma) \ |
142 | DEFINE_RES_DMA_NAMED((_dma), NULL) |
136 | DEFINE_RES_DMA_NAMED((_dma), NULL) |
143 | 137 | ||
144 | /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ |
138 | /* PC/ISA/whatever - the normal PC address spaces: IO and memory */ |
145 | extern struct resource ioport_resource; |
139 | extern struct resource ioport_resource; |
146 | extern struct resource iomem_resource; |
140 | extern struct resource iomem_resource; |
147 | 141 | ||
148 | extern struct resource *request_resource_conflict(struct resource *root, struct resource *new); |
142 | extern struct resource *request_resource_conflict(struct resource *root, struct resource *new); |
149 | extern int request_resource(struct resource *root, struct resource *new); |
143 | extern int request_resource(struct resource *root, struct resource *new); |
150 | extern int release_resource(struct resource *new); |
144 | extern int release_resource(struct resource *new); |
151 | void release_child_resources(struct resource *new); |
145 | void release_child_resources(struct resource *new); |
152 | extern void reserve_region_with_split(struct resource *root, |
146 | extern void reserve_region_with_split(struct resource *root, |
153 | resource_size_t start, resource_size_t end, |
147 | resource_size_t start, resource_size_t end, |
154 | const char *name); |
148 | const char *name); |
155 | extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new); |
149 | extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new); |
156 | extern int insert_resource(struct resource *parent, struct resource *new); |
150 | extern int insert_resource(struct resource *parent, struct resource *new); |
157 | extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new); |
151 | extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new); |
158 | extern void arch_remove_reservations(struct resource *avail); |
152 | extern void arch_remove_reservations(struct resource *avail); |
159 | extern int allocate_resource(struct resource *root, struct resource *new, |
153 | extern int allocate_resource(struct resource *root, struct resource *new, |
160 | resource_size_t size, resource_size_t min, |
154 | resource_size_t size, resource_size_t min, |
161 | resource_size_t max, resource_size_t align, |
155 | resource_size_t max, resource_size_t align, |
162 | resource_size_t (*alignf)(void *, |
156 | resource_size_t (*alignf)(void *, |
163 | const struct resource *, |
157 | const struct resource *, |
164 | resource_size_t, |
158 | resource_size_t, |
165 | resource_size_t), |
159 | resource_size_t), |
166 | void *alignf_data); |
160 | void *alignf_data); |
167 | struct resource *lookup_resource(struct resource *root, resource_size_t start); |
161 | struct resource *lookup_resource(struct resource *root, resource_size_t start); |
168 | int adjust_resource(struct resource *res, resource_size_t start, |
162 | int adjust_resource(struct resource *res, resource_size_t start, |
169 | resource_size_t size); |
163 | resource_size_t size); |
170 | resource_size_t resource_alignment(struct resource *res); |
164 | resource_size_t resource_alignment(struct resource *res); |
171 | static inline resource_size_t resource_size(const struct resource *res) |
165 | static inline resource_size_t resource_size(const struct resource *res) |
172 | { |
166 | { |
173 | return res->end - res->start + 1; |
167 | return res->end - res->start + 1; |
174 | } |
168 | } |
175 | static inline unsigned long resource_type(const struct resource *res) |
169 | static inline unsigned long resource_type(const struct resource *res) |
176 | { |
170 | { |
177 | return res->flags & IORESOURCE_TYPE_BITS; |
171 | return res->flags & IORESOURCE_TYPE_BITS; |
178 | } |
172 | } |
- | 173 | /* True iff r1 completely contains r2 */ |
|
- | 174 | static inline bool resource_contains(struct resource *r1, struct resource *r2) |
|
- | 175 | { |
|
- | 176 | if (resource_type(r1) != resource_type(r2)) |
|
- | 177 | return false; |
|
- | 178 | if (r1->flags & IORESOURCE_UNSET || r2->flags & IORESOURCE_UNSET) |
|
- | 179 | return false; |
|
- | 180 | return r1->start <= r2->start && r1->end >= r2->end; |
|
- | 181 | } |
|
179 | 182 | ||
180 | 183 | ||
181 | #endif /* __ASSEMBLY__ */ |
184 | #endif /* __ASSEMBLY__ */ |
182 | #endif /* _LINUX_IOPORT_H */4)><4)>3)><3)>2)><2)>1)><1)>0)><0)>2) |
185 | #endif /* _LINUX_IOPORT_H */=>4)><4)>3)><3)>2)><2)>1)><1)>0)><0)>2) |
183 | 186 | ||
184 | /*><2) |
187 | /*><2) |
185 | 188 | ||
186 | /*>1) |
189 | /*>1) |
187 | #define><1) |
190 | #define><1) |
188 | #define>0) |
191 | #define>0) |
189 | #define><0) |
192 | #define><0) |
190 | #define>6) |
193 | #define>6) |
191 | 194 | ||
192 | /*><6) |
195 | /*><6) |
193 | 196 | ||
194 | /*>5)><5)>3) |
197 | /*>5)><5)>3) |
195 | #define><3) |
198 | #define><3) |
196 | #define>3) |
199 | #define>3) |
197 | #define><3) |
200 | #define><3) |
198 | #define>3) |
201 | #define>3) |
199 | #define><3) |
202 | #define><3) |
200 | #define>3) |
203 | #define>3) |
201 | #define><3) |
204 | #define><3) |
202 | #define>3) |
205 | #define>3) |
203 | #define><3) |
206 | #define><3) |
204 | #define>2)><2)>1)><1)>0)><0)>6) |
207 | #define>2)><2)>1)><1)>0)><0)>6) |
205 | 208 | ||
206 | /*><6) |
209 | /*><6) |
207 | 210 | ||
208 | /*>6) |
211 | /*>6) |
209 | #define><6) |
212 | #define><6) |
210 | #define>6) |
213 | #define>6) |
211 | #define><6) |
214 | #define><6) |
212 | #define>6) |
215 | #define>6) |
213 | #define><6) |
216 | #define><6) |
214 | #define>6) |
217 | #define>6) |
215 | #define><6) |
218 | #define><6) |
216 | #define>4) |
219 | #define>4) |
217 | 220 | ||
218 | #define><4) |
221 | #define><4) |
219 | 222 | ||
220 | #define>3) |
223 | #define>3) |
221 | #define><3) |
224 | #define><3) |
222 | #define>2) |
225 | #define>2) |
223 | #define><2) |
226 | #define><2) |
224 | #define>0) |
227 | #define>0) |
225 | 228 | ||
226 | #define><0) |
229 | #define><0) |
227 | 230 | ||
228 | #define>0) |
231 | #define>0) |
229 | #define><0) |
232 | #define><0) |
230 | #define>0) |
233 | #define>0) |
231 | #define><0) |
234 | #define><0) |
232 | #define>0) |
235 | #define>0) |
233 | #define><0) |
236 | #define><0) |
234 | #define>5) |
237 | #define>5) |
235 | 238 | ||
236 | /*><5) |
239 | /*><5) |
237 | 240 | ||
238 | /*>4) |
241 | /*>4) |
239 | #define><4) |
242 | #define><4) |
240 | #define>3) |
243 | #define>3) |
241 | #define><3) |
244 | #define><3) |
242 | #define>2) |
245 | #define>2) |
243 | #define><2) |
246 | #define><2) |
244 | #define>1) |
247 | #define>1) |
245 | #define><1) |
248 | #define><1) |
246 | #define>0) |
249 | #define>0) |
247 | #define><0) |
250 | #define><0) |
248 | #define> |
251 | #define> |