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Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * rsparser.c - parses and encodes pnpbios resource data streams | |
1da177e4 LT |
3 | */ |
4 | ||
1da177e4 LT |
5 | #include <linux/ctype.h> |
6 | #include <linux/pnp.h> | |
4e57b681 TS |
7 | #include <linux/string.h> |
8 | #include <linux/slab.h> | |
1da177e4 LT |
9 | |
10 | #ifdef CONFIG_PCI | |
11 | #include <linux/pci.h> | |
12 | #else | |
9dd78466 BH |
13 | inline void pcibios_penalize_isa_irq(int irq, int active) |
14 | { | |
15 | } | |
07d4e9af | 16 | #endif /* CONFIG_PCI */ |
1da177e4 | 17 | |
772defc6 | 18 | #include "../base.h" |
1da177e4 LT |
19 | #include "pnpbios.h" |
20 | ||
21 | /* standard resource tags */ | |
22 | #define SMALL_TAG_PNPVERNO 0x01 | |
23 | #define SMALL_TAG_LOGDEVID 0x02 | |
24 | #define SMALL_TAG_COMPATDEVID 0x03 | |
25 | #define SMALL_TAG_IRQ 0x04 | |
26 | #define SMALL_TAG_DMA 0x05 | |
27 | #define SMALL_TAG_STARTDEP 0x06 | |
28 | #define SMALL_TAG_ENDDEP 0x07 | |
29 | #define SMALL_TAG_PORT 0x08 | |
30 | #define SMALL_TAG_FIXEDPORT 0x09 | |
31 | #define SMALL_TAG_VENDOR 0x0e | |
32 | #define SMALL_TAG_END 0x0f | |
33 | #define LARGE_TAG 0x80 | |
34 | #define LARGE_TAG_MEM 0x81 | |
35 | #define LARGE_TAG_ANSISTR 0x82 | |
36 | #define LARGE_TAG_UNICODESTR 0x83 | |
37 | #define LARGE_TAG_VENDOR 0x84 | |
38 | #define LARGE_TAG_MEM32 0x85 | |
39 | #define LARGE_TAG_FIXEDMEM32 0x86 | |
40 | ||
41 | /* | |
42 | * Resource Data Stream Format: | |
43 | * | |
44 | * Allocated Resources (required) | |
45 | * end tag -> | |
46 | * Resource Configuration Options (optional) | |
47 | * end tag -> | |
48 | * Compitable Device IDs (optional) | |
49 | * final end tag -> | |
50 | */ | |
51 | ||
52 | /* | |
53 | * Allocated Resources | |
54 | */ | |
55 | ||
4ab55d8d | 56 | static void pnpbios_parse_allocated_ioresource(struct pnp_dev *dev, |
cc8c2e30 | 57 | int start, int len) |
1da177e4 | 58 | { |
cc8c2e30 BH |
59 | int flags = 0; |
60 | int end = start + len - 1; | |
06cb58a6 | 61 | |
cc8c2e30 BH |
62 | if (len <= 0 || end >= 0x10003) |
63 | flags |= IORESOURCE_DISABLED; | |
07d4e9af | 64 | |
cc8c2e30 | 65 | pnp_add_io_resource(dev, start, end, flags); |
1da177e4 LT |
66 | } |
67 | ||
4ab55d8d | 68 | static void pnpbios_parse_allocated_memresource(struct pnp_dev *dev, |
d6180f36 | 69 | int start, int len) |
1da177e4 | 70 | { |
d6180f36 BH |
71 | int flags = 0; |
72 | int end = start + len - 1; | |
73 | ||
74 | if (len <= 0) | |
75 | flags |= IORESOURCE_DISABLED; | |
76 | ||
77 | pnp_add_mem_resource(dev, start, end, flags); | |
1da177e4 LT |
78 | } |
79 | ||
4ab55d8d BH |
80 | static unsigned char *pnpbios_parse_allocated_resource_data(struct pnp_dev *dev, |
81 | unsigned char *p, | |
82 | unsigned char *end) | |
1da177e4 LT |
83 | { |
84 | unsigned int len, tag; | |
dbddd038 | 85 | int io, size, mask, i, flags; |
1da177e4 LT |
86 | |
87 | if (!p) | |
88 | return NULL; | |
89 | ||
72dcc883 BH |
90 | dev_dbg(&dev->dev, "parse allocated resources\n"); |
91 | ||
f4490002 | 92 | pnp_init_resources(dev); |
1da177e4 LT |
93 | |
94 | while ((char *)p < (char *)end) { | |
95 | ||
96 | /* determine the type of tag */ | |
9dd78466 | 97 | if (p[0] & LARGE_TAG) { /* large tag */ |
1da177e4 LT |
98 | len = (p[2] << 8) | p[1]; |
99 | tag = p[0]; | |
9dd78466 | 100 | } else { /* small tag */ |
1da177e4 | 101 | len = p[0] & 0x07; |
9dd78466 | 102 | tag = ((p[0] >> 3) & 0x0f); |
1da177e4 LT |
103 | } |
104 | ||
105 | switch (tag) { | |
106 | ||
107 | case LARGE_TAG_MEM: | |
108 | if (len != 9) | |
109 | goto len_err; | |
9dd78466 BH |
110 | io = *(short *)&p[4]; |
111 | size = *(short *)&p[10]; | |
4ab55d8d | 112 | pnpbios_parse_allocated_memresource(dev, io, size); |
1da177e4 LT |
113 | break; |
114 | ||
115 | case LARGE_TAG_ANSISTR: | |
116 | /* ignore this for now */ | |
117 | break; | |
118 | ||
119 | case LARGE_TAG_VENDOR: | |
120 | /* do nothing */ | |
121 | break; | |
122 | ||
123 | case LARGE_TAG_MEM32: | |
124 | if (len != 17) | |
125 | goto len_err; | |
9dd78466 BH |
126 | io = *(int *)&p[4]; |
127 | size = *(int *)&p[16]; | |
4ab55d8d | 128 | pnpbios_parse_allocated_memresource(dev, io, size); |
1da177e4 LT |
129 | break; |
130 | ||
131 | case LARGE_TAG_FIXEDMEM32: | |
132 | if (len != 9) | |
133 | goto len_err; | |
9dd78466 BH |
134 | io = *(int *)&p[4]; |
135 | size = *(int *)&p[8]; | |
4ab55d8d | 136 | pnpbios_parse_allocated_memresource(dev, io, size); |
1da177e4 LT |
137 | break; |
138 | ||
139 | case SMALL_TAG_IRQ: | |
140 | if (len < 2 || len > 3) | |
141 | goto len_err; | |
dbddd038 | 142 | flags = 0; |
1da177e4 | 143 | io = -1; |
9dd78466 BH |
144 | mask = p[1] + p[2] * 256; |
145 | for (i = 0; i < 16; i++, mask = mask >> 1) | |
146 | if (mask & 0x01) | |
147 | io = i; | |
dbddd038 BH |
148 | if (io != -1) |
149 | pcibios_penalize_isa_irq(io, 1); | |
150 | else | |
151 | flags = IORESOURCE_DISABLED; | |
152 | pnp_add_irq_resource(dev, io, flags); | |
1da177e4 LT |
153 | break; |
154 | ||
155 | case SMALL_TAG_DMA: | |
156 | if (len != 2) | |
157 | goto len_err; | |
dc16f5f2 | 158 | flags = 0; |
1da177e4 LT |
159 | io = -1; |
160 | mask = p[1]; | |
9dd78466 BH |
161 | for (i = 0; i < 8; i++, mask = mask >> 1) |
162 | if (mask & 0x01) | |
163 | io = i; | |
dc16f5f2 BH |
164 | if (io == -1) |
165 | flags = IORESOURCE_DISABLED; | |
166 | pnp_add_dma_resource(dev, io, flags); | |
1da177e4 LT |
167 | break; |
168 | ||
169 | case SMALL_TAG_PORT: | |
170 | if (len != 7) | |
171 | goto len_err; | |
9dd78466 | 172 | io = p[2] + p[3] * 256; |
1da177e4 | 173 | size = p[7]; |
4ab55d8d | 174 | pnpbios_parse_allocated_ioresource(dev, io, size); |
1da177e4 LT |
175 | break; |
176 | ||
177 | case SMALL_TAG_VENDOR: | |
178 | /* do nothing */ | |
179 | break; | |
180 | ||
181 | case SMALL_TAG_FIXEDPORT: | |
182 | if (len != 3) | |
183 | goto len_err; | |
184 | io = p[1] + p[2] * 256; | |
185 | size = p[3]; | |
4ab55d8d | 186 | pnpbios_parse_allocated_ioresource(dev, io, size); |
1da177e4 LT |
187 | break; |
188 | ||
189 | case SMALL_TAG_END: | |
190 | p = p + 2; | |
9dd78466 | 191 | return (unsigned char *)p; |
1da177e4 LT |
192 | break; |
193 | ||
9dd78466 | 194 | default: /* an unkown tag */ |
1e0aa9ad | 195 | len_err: |
af11cb2d BH |
196 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
197 | tag, len); | |
1da177e4 LT |
198 | break; |
199 | } | |
200 | ||
201 | /* continue to the next tag */ | |
202 | if (p[0] & LARGE_TAG) | |
203 | p += len + 3; | |
204 | else | |
205 | p += len + 1; | |
206 | } | |
207 | ||
af11cb2d | 208 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
1da177e4 LT |
209 | |
210 | return NULL; | |
211 | } | |
212 | ||
1da177e4 LT |
213 | /* |
214 | * Resource Configuration Options | |
215 | */ | |
216 | ||
c1caf06c BH |
217 | static __init void pnpbios_parse_mem_option(struct pnp_dev *dev, |
218 | unsigned char *p, int size, | |
2bb9a6b3 | 219 | struct pnp_option *option) |
1da177e4 | 220 | { |
9dd78466 | 221 | struct pnp_mem *mem; |
07d4e9af | 222 | |
cd861280 | 223 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
224 | if (!mem) |
225 | return; | |
226 | mem->min = ((p[5] << 8) | p[4]) << 8; | |
227 | mem->max = ((p[7] << 8) | p[6]) << 8; | |
228 | mem->align = (p[9] << 8) | p[8]; | |
229 | mem->size = ((p[11] << 8) | p[10]) << 8; | |
230 | mem->flags = p[3]; | |
c1caf06c | 231 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
232 | } |
233 | ||
c1caf06c BH |
234 | static __init void pnpbios_parse_mem32_option(struct pnp_dev *dev, |
235 | unsigned char *p, int size, | |
2bb9a6b3 | 236 | struct pnp_option *option) |
1da177e4 | 237 | { |
9dd78466 | 238 | struct pnp_mem *mem; |
07d4e9af | 239 | |
cd861280 | 240 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
241 | if (!mem) |
242 | return; | |
243 | mem->min = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; | |
244 | mem->max = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; | |
245 | mem->align = (p[15] << 24) | (p[14] << 16) | (p[13] << 8) | p[12]; | |
246 | mem->size = (p[19] << 24) | (p[18] << 16) | (p[17] << 8) | p[16]; | |
247 | mem->flags = p[3]; | |
c1caf06c | 248 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
249 | } |
250 | ||
c1caf06c BH |
251 | static __init void pnpbios_parse_fixed_mem32_option(struct pnp_dev *dev, |
252 | unsigned char *p, int size, | |
2bb9a6b3 | 253 | struct pnp_option *option) |
1da177e4 | 254 | { |
9dd78466 | 255 | struct pnp_mem *mem; |
1e0aa9ad | 256 | |
cd861280 | 257 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
258 | if (!mem) |
259 | return; | |
260 | mem->min = mem->max = (p[7] << 24) | (p[6] << 16) | (p[5] << 8) | p[4]; | |
261 | mem->size = (p[11] << 24) | (p[10] << 16) | (p[9] << 8) | p[8]; | |
262 | mem->align = 0; | |
263 | mem->flags = p[3]; | |
c1caf06c | 264 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
265 | } |
266 | ||
c1caf06c BH |
267 | static __init void pnpbios_parse_irq_option(struct pnp_dev *dev, |
268 | unsigned char *p, int size, | |
269 | struct pnp_option *option) | |
1da177e4 | 270 | { |
9dd78466 | 271 | struct pnp_irq *irq; |
1da177e4 LT |
272 | unsigned long bits; |
273 | ||
cd861280 | 274 | irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
1da177e4 LT |
275 | if (!irq) |
276 | return; | |
277 | bits = (p[2] << 8) | p[1]; | |
278 | bitmap_copy(irq->map, &bits, 16); | |
279 | if (size > 2) | |
280 | irq->flags = p[3]; | |
281 | else | |
282 | irq->flags = IORESOURCE_IRQ_HIGHEDGE; | |
c1caf06c | 283 | pnp_register_irq_resource(dev, option, irq); |
1da177e4 LT |
284 | } |
285 | ||
c1caf06c BH |
286 | static __init void pnpbios_parse_dma_option(struct pnp_dev *dev, |
287 | unsigned char *p, int size, | |
288 | struct pnp_option *option) | |
1da177e4 | 289 | { |
9dd78466 | 290 | struct pnp_dma *dma; |
07d4e9af | 291 | |
cd861280 | 292 | dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
1da177e4 LT |
293 | if (!dma) |
294 | return; | |
295 | dma->map = p[1]; | |
296 | dma->flags = p[2]; | |
c1caf06c | 297 | pnp_register_dma_resource(dev, option, dma); |
1da177e4 LT |
298 | } |
299 | ||
c1caf06c BH |
300 | static __init void pnpbios_parse_port_option(struct pnp_dev *dev, |
301 | unsigned char *p, int size, | |
2bb9a6b3 | 302 | struct pnp_option *option) |
1da177e4 | 303 | { |
9dd78466 | 304 | struct pnp_port *port; |
07d4e9af | 305 | |
cd861280 | 306 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
307 | if (!port) |
308 | return; | |
309 | port->min = (p[3] << 8) | p[2]; | |
310 | port->max = (p[5] << 8) | p[4]; | |
311 | port->align = p[6]; | |
312 | port->size = p[7]; | |
08c9f262 | 313 | port->flags = p[1] ? IORESOURCE_IO_16BIT_ADDR : 0; |
c1caf06c | 314 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
315 | } |
316 | ||
c1caf06c BH |
317 | static __init void pnpbios_parse_fixed_port_option(struct pnp_dev *dev, |
318 | unsigned char *p, int size, | |
2bb9a6b3 | 319 | struct pnp_option *option) |
1da177e4 | 320 | { |
9dd78466 | 321 | struct pnp_port *port; |
07d4e9af | 322 | |
cd861280 | 323 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
324 | if (!port) |
325 | return; | |
326 | port->min = port->max = (p[2] << 8) | p[1]; | |
327 | port->size = p[3]; | |
328 | port->align = 0; | |
08c9f262 | 329 | port->flags = IORESOURCE_IO_FIXED; |
c1caf06c | 330 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
331 | } |
332 | ||
2bb9a6b3 TR |
333 | static __init unsigned char * |
334 | pnpbios_parse_resource_option_data(unsigned char *p, unsigned char *end, | |
335 | struct pnp_dev *dev) | |
1da177e4 LT |
336 | { |
337 | unsigned int len, tag; | |
338 | int priority = 0; | |
339 | struct pnp_option *option, *option_independent; | |
340 | ||
341 | if (!p) | |
342 | return NULL; | |
343 | ||
72dcc883 BH |
344 | dev_dbg(&dev->dev, "parse resource options\n"); |
345 | ||
1da177e4 LT |
346 | option_independent = option = pnp_register_independent_option(dev); |
347 | if (!option) | |
348 | return NULL; | |
349 | ||
350 | while ((char *)p < (char *)end) { | |
351 | ||
352 | /* determine the type of tag */ | |
9dd78466 | 353 | if (p[0] & LARGE_TAG) { /* large tag */ |
1da177e4 LT |
354 | len = (p[2] << 8) | p[1]; |
355 | tag = p[0]; | |
9dd78466 | 356 | } else { /* small tag */ |
1da177e4 | 357 | len = p[0] & 0x07; |
9dd78466 | 358 | tag = ((p[0] >> 3) & 0x0f); |
1da177e4 LT |
359 | } |
360 | ||
361 | switch (tag) { | |
362 | ||
363 | case LARGE_TAG_MEM: | |
364 | if (len != 9) | |
365 | goto len_err; | |
c1caf06c | 366 | pnpbios_parse_mem_option(dev, p, len, option); |
1da177e4 LT |
367 | break; |
368 | ||
369 | case LARGE_TAG_MEM32: | |
370 | if (len != 17) | |
371 | goto len_err; | |
c1caf06c | 372 | pnpbios_parse_mem32_option(dev, p, len, option); |
1da177e4 LT |
373 | break; |
374 | ||
375 | case LARGE_TAG_FIXEDMEM32: | |
376 | if (len != 9) | |
377 | goto len_err; | |
c1caf06c | 378 | pnpbios_parse_fixed_mem32_option(dev, p, len, option); |
1da177e4 LT |
379 | break; |
380 | ||
381 | case SMALL_TAG_IRQ: | |
382 | if (len < 2 || len > 3) | |
383 | goto len_err; | |
c1caf06c | 384 | pnpbios_parse_irq_option(dev, p, len, option); |
1da177e4 LT |
385 | break; |
386 | ||
387 | case SMALL_TAG_DMA: | |
388 | if (len != 2) | |
389 | goto len_err; | |
c1caf06c | 390 | pnpbios_parse_dma_option(dev, p, len, option); |
1da177e4 LT |
391 | break; |
392 | ||
393 | case SMALL_TAG_PORT: | |
394 | if (len != 7) | |
395 | goto len_err; | |
c1caf06c | 396 | pnpbios_parse_port_option(dev, p, len, option); |
1da177e4 LT |
397 | break; |
398 | ||
399 | case SMALL_TAG_VENDOR: | |
400 | /* do nothing */ | |
401 | break; | |
402 | ||
403 | case SMALL_TAG_FIXEDPORT: | |
404 | if (len != 3) | |
405 | goto len_err; | |
c1caf06c | 406 | pnpbios_parse_fixed_port_option(dev, p, len, option); |
1da177e4 LT |
407 | break; |
408 | ||
409 | case SMALL_TAG_STARTDEP: | |
410 | if (len > 1) | |
411 | goto len_err; | |
412 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; | |
413 | if (len > 0) | |
414 | priority = 0x100 | p[1]; | |
415 | option = pnp_register_dependent_option(dev, priority); | |
416 | if (!option) | |
417 | return NULL; | |
418 | break; | |
419 | ||
420 | case SMALL_TAG_ENDDEP: | |
421 | if (len != 0) | |
422 | goto len_err; | |
423 | if (option_independent == option) | |
af11cb2d BH |
424 | dev_warn(&dev->dev, "missing " |
425 | "SMALL_TAG_STARTDEP tag\n"); | |
1da177e4 | 426 | option = option_independent; |
c1caf06c | 427 | dev_dbg(&dev->dev, "end dependent options\n"); |
1da177e4 LT |
428 | break; |
429 | ||
430 | case SMALL_TAG_END: | |
9dd78466 | 431 | return p + 2; |
1da177e4 | 432 | |
9dd78466 | 433 | default: /* an unkown tag */ |
1e0aa9ad | 434 | len_err: |
af11cb2d BH |
435 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
436 | tag, len); | |
1da177e4 LT |
437 | break; |
438 | } | |
439 | ||
440 | /* continue to the next tag */ | |
441 | if (p[0] & LARGE_TAG) | |
442 | p += len + 3; | |
443 | else | |
444 | p += len + 1; | |
445 | } | |
446 | ||
af11cb2d | 447 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
1da177e4 LT |
448 | |
449 | return NULL; | |
450 | } | |
451 | ||
1da177e4 LT |
452 | /* |
453 | * Compatible Device IDs | |
454 | */ | |
455 | ||
9dd78466 BH |
456 | static unsigned char *pnpbios_parse_compatible_ids(unsigned char *p, |
457 | unsigned char *end, | |
458 | struct pnp_dev *dev) | |
1da177e4 LT |
459 | { |
460 | int len, tag; | |
25eb8461 | 461 | u32 eisa_id; |
1da177e4 LT |
462 | char id[8]; |
463 | struct pnp_id *dev_id; | |
464 | ||
465 | if (!p) | |
466 | return NULL; | |
467 | ||
468 | while ((char *)p < (char *)end) { | |
469 | ||
470 | /* determine the type of tag */ | |
9dd78466 | 471 | if (p[0] & LARGE_TAG) { /* large tag */ |
1da177e4 LT |
472 | len = (p[2] << 8) | p[1]; |
473 | tag = p[0]; | |
9dd78466 | 474 | } else { /* small tag */ |
1da177e4 | 475 | len = p[0] & 0x07; |
9dd78466 | 476 | tag = ((p[0] >> 3) & 0x0f); |
1da177e4 LT |
477 | } |
478 | ||
479 | switch (tag) { | |
480 | ||
481 | case LARGE_TAG_ANSISTR: | |
9dd78466 BH |
482 | strncpy(dev->name, p + 3, |
483 | len >= PNP_NAME_LEN ? PNP_NAME_LEN - 2 : len); | |
484 | dev->name[len >= | |
485 | PNP_NAME_LEN ? PNP_NAME_LEN - 1 : len] = '\0'; | |
1da177e4 LT |
486 | break; |
487 | ||
9dd78466 | 488 | case SMALL_TAG_COMPATDEVID: /* compatible ID */ |
1da177e4 LT |
489 | if (len != 4) |
490 | goto len_err; | |
25eb8461 BH |
491 | eisa_id = p[1] | p[2] << 8 | p[3] << 16 | p[4] << 24; |
492 | pnp_eisa_id_to_string(eisa_id & PNP_EISA_ID_MASK, id); | |
772defc6 BH |
493 | dev_id = pnp_add_id(dev, id); |
494 | if (!dev_id) | |
495 | return NULL; | |
1da177e4 LT |
496 | break; |
497 | ||
498 | case SMALL_TAG_END: | |
499 | p = p + 2; | |
9dd78466 | 500 | return (unsigned char *)p; |
1da177e4 LT |
501 | break; |
502 | ||
9dd78466 | 503 | default: /* an unkown tag */ |
1e0aa9ad | 504 | len_err: |
af11cb2d BH |
505 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
506 | tag, len); | |
1da177e4 LT |
507 | break; |
508 | } | |
509 | ||
510 | /* continue to the next tag */ | |
511 | if (p[0] & LARGE_TAG) | |
512 | p += len + 3; | |
513 | else | |
514 | p += len + 1; | |
515 | } | |
516 | ||
af11cb2d | 517 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
1da177e4 LT |
518 | |
519 | return NULL; | |
520 | } | |
521 | ||
1da177e4 LT |
522 | /* |
523 | * Allocated Resource Encoding | |
524 | */ | |
525 | ||
72dcc883 BH |
526 | static void pnpbios_encode_mem(struct pnp_dev *dev, unsigned char *p, |
527 | struct resource *res) | |
1da177e4 | 528 | { |
aee3ad81 BH |
529 | unsigned long base; |
530 | unsigned long len; | |
531 | ||
532 | if (pnp_resource_enabled(res)) { | |
533 | base = res->start; | |
534 | len = res->end - res->start + 1; | |
535 | } else { | |
536 | base = 0; | |
537 | len = 0; | |
538 | } | |
07d4e9af | 539 | |
1da177e4 LT |
540 | p[4] = (base >> 8) & 0xff; |
541 | p[5] = ((base >> 8) >> 8) & 0xff; | |
542 | p[6] = (base >> 8) & 0xff; | |
543 | p[7] = ((base >> 8) >> 8) & 0xff; | |
544 | p[10] = (len >> 8) & 0xff; | |
545 | p[11] = ((len >> 8) >> 8) & 0xff; | |
72dcc883 | 546 | |
aee3ad81 | 547 | dev_dbg(&dev->dev, " encode mem %#lx-%#lx\n", base, base + len - 1); |
1da177e4 LT |
548 | } |
549 | ||
72dcc883 BH |
550 | static void pnpbios_encode_mem32(struct pnp_dev *dev, unsigned char *p, |
551 | struct resource *res) | |
1da177e4 | 552 | { |
aee3ad81 BH |
553 | unsigned long base; |
554 | unsigned long len; | |
555 | ||
556 | if (pnp_resource_enabled(res)) { | |
557 | base = res->start; | |
558 | len = res->end - res->start + 1; | |
559 | } else { | |
560 | base = 0; | |
561 | len = 0; | |
562 | } | |
07d4e9af | 563 | |
1da177e4 LT |
564 | p[4] = base & 0xff; |
565 | p[5] = (base >> 8) & 0xff; | |
566 | p[6] = (base >> 16) & 0xff; | |
567 | p[7] = (base >> 24) & 0xff; | |
568 | p[8] = base & 0xff; | |
569 | p[9] = (base >> 8) & 0xff; | |
570 | p[10] = (base >> 16) & 0xff; | |
571 | p[11] = (base >> 24) & 0xff; | |
572 | p[16] = len & 0xff; | |
573 | p[17] = (len >> 8) & 0xff; | |
574 | p[18] = (len >> 16) & 0xff; | |
575 | p[19] = (len >> 24) & 0xff; | |
72dcc883 | 576 | |
aee3ad81 | 577 | dev_dbg(&dev->dev, " encode mem32 %#lx-%#lx\n", base, base + len - 1); |
1da177e4 LT |
578 | } |
579 | ||
72dcc883 BH |
580 | static void pnpbios_encode_fixed_mem32(struct pnp_dev *dev, unsigned char *p, |
581 | struct resource *res) | |
9dd78466 | 582 | { |
aee3ad81 BH |
583 | unsigned long base; |
584 | unsigned long len; | |
585 | ||
586 | if (pnp_resource_enabled(res)) { | |
587 | base = res->start; | |
588 | len = res->end - res->start + 1; | |
589 | } else { | |
590 | base = 0; | |
591 | len = 0; | |
592 | } | |
07d4e9af | 593 | |
1da177e4 LT |
594 | p[4] = base & 0xff; |
595 | p[5] = (base >> 8) & 0xff; | |
596 | p[6] = (base >> 16) & 0xff; | |
597 | p[7] = (base >> 24) & 0xff; | |
598 | p[8] = len & 0xff; | |
599 | p[9] = (len >> 8) & 0xff; | |
600 | p[10] = (len >> 16) & 0xff; | |
601 | p[11] = (len >> 24) & 0xff; | |
72dcc883 | 602 | |
aee3ad81 BH |
603 | dev_dbg(&dev->dev, " encode fixed_mem32 %#lx-%#lx\n", base, |
604 | base + len - 1); | |
1da177e4 LT |
605 | } |
606 | ||
72dcc883 BH |
607 | static void pnpbios_encode_irq(struct pnp_dev *dev, unsigned char *p, |
608 | struct resource *res) | |
1da177e4 | 609 | { |
aee3ad81 BH |
610 | unsigned long map; |
611 | ||
612 | if (pnp_resource_enabled(res)) | |
613 | map = 1 << res->start; | |
614 | else | |
615 | map = 0; | |
07d4e9af | 616 | |
1da177e4 LT |
617 | p[1] = map & 0xff; |
618 | p[2] = (map >> 8) & 0xff; | |
72dcc883 | 619 | |
aee3ad81 | 620 | dev_dbg(&dev->dev, " encode irq mask %#lx\n", map); |
1da177e4 LT |
621 | } |
622 | ||
72dcc883 BH |
623 | static void pnpbios_encode_dma(struct pnp_dev *dev, unsigned char *p, |
624 | struct resource *res) | |
1da177e4 | 625 | { |
aee3ad81 BH |
626 | unsigned long map; |
627 | ||
628 | if (pnp_resource_enabled(res)) | |
629 | map = 1 << res->start; | |
630 | else | |
631 | map = 0; | |
07d4e9af | 632 | |
1da177e4 | 633 | p[1] = map & 0xff; |
72dcc883 | 634 | |
aee3ad81 | 635 | dev_dbg(&dev->dev, " encode dma mask %#lx\n", map); |
1da177e4 LT |
636 | } |
637 | ||
72dcc883 BH |
638 | static void pnpbios_encode_port(struct pnp_dev *dev, unsigned char *p, |
639 | struct resource *res) | |
1da177e4 | 640 | { |
aee3ad81 BH |
641 | unsigned long base; |
642 | unsigned long len; | |
643 | ||
644 | if (pnp_resource_enabled(res)) { | |
645 | base = res->start; | |
646 | len = res->end - res->start + 1; | |
647 | } else { | |
648 | base = 0; | |
649 | len = 0; | |
650 | } | |
07d4e9af | 651 | |
1da177e4 LT |
652 | p[2] = base & 0xff; |
653 | p[3] = (base >> 8) & 0xff; | |
654 | p[4] = base & 0xff; | |
655 | p[5] = (base >> 8) & 0xff; | |
656 | p[7] = len & 0xff; | |
72dcc883 | 657 | |
aee3ad81 | 658 | dev_dbg(&dev->dev, " encode io %#lx-%#lx\n", base, base + len - 1); |
1da177e4 LT |
659 | } |
660 | ||
72dcc883 BH |
661 | static void pnpbios_encode_fixed_port(struct pnp_dev *dev, unsigned char *p, |
662 | struct resource *res) | |
1da177e4 LT |
663 | { |
664 | unsigned long base = res->start; | |
665 | unsigned long len = res->end - res->start + 1; | |
07d4e9af | 666 | |
aee3ad81 BH |
667 | if (pnp_resource_enabled(res)) { |
668 | base = res->start; | |
669 | len = res->end - res->start + 1; | |
670 | } else { | |
671 | base = 0; | |
672 | len = 0; | |
673 | } | |
674 | ||
1da177e4 LT |
675 | p[1] = base & 0xff; |
676 | p[2] = (base >> 8) & 0xff; | |
677 | p[3] = len & 0xff; | |
72dcc883 | 678 | |
aee3ad81 BH |
679 | dev_dbg(&dev->dev, " encode fixed_io %#lx-%#lx\n", base, |
680 | base + len - 1); | |
1da177e4 LT |
681 | } |
682 | ||
4ab55d8d BH |
683 | static unsigned char *pnpbios_encode_allocated_resource_data(struct pnp_dev |
684 | *dev, | |
685 | unsigned char *p, | |
686 | unsigned char *end) | |
1da177e4 LT |
687 | { |
688 | unsigned int len, tag; | |
689 | int port = 0, irq = 0, dma = 0, mem = 0; | |
690 | ||
691 | if (!p) | |
692 | return NULL; | |
693 | ||
694 | while ((char *)p < (char *)end) { | |
695 | ||
696 | /* determine the type of tag */ | |
9dd78466 | 697 | if (p[0] & LARGE_TAG) { /* large tag */ |
1da177e4 LT |
698 | len = (p[2] << 8) | p[1]; |
699 | tag = p[0]; | |
9dd78466 | 700 | } else { /* small tag */ |
1da177e4 | 701 | len = p[0] & 0x07; |
9dd78466 | 702 | tag = ((p[0] >> 3) & 0x0f); |
1da177e4 LT |
703 | } |
704 | ||
705 | switch (tag) { | |
706 | ||
707 | case LARGE_TAG_MEM: | |
708 | if (len != 9) | |
709 | goto len_err; | |
7e2cf31f BH |
710 | pnpbios_encode_mem(dev, p, |
711 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); | |
1da177e4 LT |
712 | mem++; |
713 | break; | |
714 | ||
715 | case LARGE_TAG_MEM32: | |
716 | if (len != 17) | |
717 | goto len_err; | |
7e2cf31f BH |
718 | pnpbios_encode_mem32(dev, p, |
719 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); | |
1da177e4 LT |
720 | mem++; |
721 | break; | |
722 | ||
723 | case LARGE_TAG_FIXEDMEM32: | |
724 | if (len != 9) | |
725 | goto len_err; | |
7e2cf31f BH |
726 | pnpbios_encode_fixed_mem32(dev, p, |
727 | pnp_get_resource(dev, IORESOURCE_MEM, mem)); | |
1da177e4 LT |
728 | mem++; |
729 | break; | |
730 | ||
731 | case SMALL_TAG_IRQ: | |
732 | if (len < 2 || len > 3) | |
733 | goto len_err; | |
7e2cf31f BH |
734 | pnpbios_encode_irq(dev, p, |
735 | pnp_get_resource(dev, IORESOURCE_IRQ, irq)); | |
1da177e4 LT |
736 | irq++; |
737 | break; | |
738 | ||
739 | case SMALL_TAG_DMA: | |
740 | if (len != 2) | |
741 | goto len_err; | |
7e2cf31f BH |
742 | pnpbios_encode_dma(dev, p, |
743 | pnp_get_resource(dev, IORESOURCE_DMA, dma)); | |
1da177e4 LT |
744 | dma++; |
745 | break; | |
746 | ||
747 | case SMALL_TAG_PORT: | |
748 | if (len != 7) | |
749 | goto len_err; | |
7e2cf31f BH |
750 | pnpbios_encode_port(dev, p, |
751 | pnp_get_resource(dev, IORESOURCE_IO, port)); | |
1da177e4 LT |
752 | port++; |
753 | break; | |
754 | ||
755 | case SMALL_TAG_VENDOR: | |
756 | /* do nothing */ | |
757 | break; | |
758 | ||
759 | case SMALL_TAG_FIXEDPORT: | |
760 | if (len != 3) | |
761 | goto len_err; | |
7e2cf31f BH |
762 | pnpbios_encode_fixed_port(dev, p, |
763 | pnp_get_resource(dev, IORESOURCE_IO, port)); | |
1da177e4 LT |
764 | port++; |
765 | break; | |
766 | ||
767 | case SMALL_TAG_END: | |
768 | p = p + 2; | |
9dd78466 | 769 | return (unsigned char *)p; |
1da177e4 LT |
770 | break; |
771 | ||
9dd78466 | 772 | default: /* an unkown tag */ |
1e0aa9ad | 773 | len_err: |
af11cb2d BH |
774 | dev_err(&dev->dev, "unknown tag %#x length %d\n", |
775 | tag, len); | |
1da177e4 LT |
776 | break; |
777 | } | |
778 | ||
779 | /* continue to the next tag */ | |
780 | if (p[0] & LARGE_TAG) | |
781 | p += len + 3; | |
782 | else | |
783 | p += len + 1; | |
784 | } | |
785 | ||
af11cb2d | 786 | dev_err(&dev->dev, "no end tag in resource structure\n"); |
1da177e4 LT |
787 | |
788 | return NULL; | |
789 | } | |
790 | ||
1da177e4 LT |
791 | /* |
792 | * Core Parsing Functions | |
793 | */ | |
794 | ||
2bb9a6b3 TR |
795 | int __init pnpbios_parse_data_stream(struct pnp_dev *dev, |
796 | struct pnp_bios_node *node) | |
1da177e4 | 797 | { |
9dd78466 BH |
798 | unsigned char *p = (char *)node->data; |
799 | unsigned char *end = (char *)(node->data + node->size); | |
07d4e9af | 800 | |
4ab55d8d | 801 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
1da177e4 LT |
802 | if (!p) |
803 | return -EIO; | |
9dd78466 | 804 | p = pnpbios_parse_resource_option_data(p, end, dev); |
1da177e4 LT |
805 | if (!p) |
806 | return -EIO; | |
9dd78466 | 807 | p = pnpbios_parse_compatible_ids(p, end, dev); |
1da177e4 LT |
808 | if (!p) |
809 | return -EIO; | |
810 | return 0; | |
811 | } | |
812 | ||
4ab55d8d | 813 | int pnpbios_read_resources_from_node(struct pnp_dev *dev, |
07d4e9af | 814 | struct pnp_bios_node *node) |
1da177e4 | 815 | { |
9dd78466 BH |
816 | unsigned char *p = (char *)node->data; |
817 | unsigned char *end = (char *)(node->data + node->size); | |
07d4e9af | 818 | |
4ab55d8d | 819 | p = pnpbios_parse_allocated_resource_data(dev, p, end); |
1da177e4 LT |
820 | if (!p) |
821 | return -EIO; | |
822 | return 0; | |
823 | } | |
824 | ||
4ab55d8d | 825 | int pnpbios_write_resources_to_node(struct pnp_dev *dev, |
07d4e9af | 826 | struct pnp_bios_node *node) |
1da177e4 | 827 | { |
9dd78466 BH |
828 | unsigned char *p = (char *)node->data; |
829 | unsigned char *end = (char *)(node->data + node->size); | |
07d4e9af | 830 | |
4ab55d8d | 831 | p = pnpbios_encode_allocated_resource_data(dev, p, end); |
1da177e4 LT |
832 | if (!p) |
833 | return -EIO; | |
834 | return 0; | |
835 | } |