Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * ISA Plug & Play support | |
c1017a4c | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
4 | * |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | * | |
20 | * Changelog: | |
21 | * 2000-01-01 Added quirks handling for buggy hardware | |
22 | * Peter Denison <peterd@pnd-pc.demon.co.uk> | |
23 | * 2000-06-14 Added isapnp_probe_devs() and isapnp_activate_dev() | |
24 | * Christoph Hellwig <hch@infradead.org> | |
25 | * 2001-06-03 Added release_region calls to correspond with | |
26 | * request_region calls when a failure occurs. Also | |
27 | * added KERN_* constants to printk() calls. | |
28 | * 2001-11-07 Added isapnp_{,un}register_driver calls along the lines | |
29 | * of the pci driver interface | |
30 | * Kai Germaschewski <kai.germaschewski@gmx.de> | |
31 | * 2002-06-06 Made the use of dma channel 0 configurable | |
32 | * Gerald Teschl <gerald.teschl@univie.ac.at> | |
33 | * 2002-10-06 Ported to PnP Layer - Adam Belay <ambx1@neo.rr.com> | |
34 | * 2003-08-11 Resource Management Updates - Adam Belay <ambx1@neo.rr.com> | |
35 | */ | |
36 | ||
1da177e4 LT |
37 | #include <linux/module.h> |
38 | #include <linux/kernel.h> | |
39 | #include <linux/errno.h> | |
1da177e4 LT |
40 | #include <linux/delay.h> |
41 | #include <linux/init.h> | |
42 | #include <linux/isapnp.h> | |
14cc3e2b | 43 | #include <linux/mutex.h> |
1da177e4 LT |
44 | #include <asm/io.h> |
45 | ||
772defc6 BH |
46 | #include "../base.h" |
47 | ||
1da177e4 LT |
48 | #if 0 |
49 | #define ISAPNP_REGION_OK | |
50 | #endif | |
1da177e4 | 51 | |
9dd78466 BH |
52 | int isapnp_disable; /* Disable ISA PnP */ |
53 | static int isapnp_rdp; /* Read Data Port */ | |
54 | static int isapnp_reset = 1; /* reset all PnP cards (deactivate) */ | |
55 | static int isapnp_verbose = 1; /* verbose mode */ | |
1da177e4 | 56 | |
c1017a4c | 57 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
58 | MODULE_DESCRIPTION("Generic ISA Plug & Play support"); |
59 | module_param(isapnp_disable, int, 0); | |
60 | MODULE_PARM_DESC(isapnp_disable, "ISA Plug & Play disable"); | |
61 | module_param(isapnp_rdp, int, 0); | |
62 | MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port"); | |
63 | module_param(isapnp_reset, int, 0); | |
64 | MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards"); | |
65 | module_param(isapnp_verbose, int, 0); | |
66 | MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode"); | |
67 | MODULE_LICENSE("GPL"); | |
68 | ||
69 | #define _PIDXR 0x279 | |
70 | #define _PNPWRP 0xa79 | |
71 | ||
72 | /* short tags */ | |
73 | #define _STAG_PNPVERNO 0x01 | |
74 | #define _STAG_LOGDEVID 0x02 | |
75 | #define _STAG_COMPATDEVID 0x03 | |
76 | #define _STAG_IRQ 0x04 | |
77 | #define _STAG_DMA 0x05 | |
78 | #define _STAG_STARTDEP 0x06 | |
79 | #define _STAG_ENDDEP 0x07 | |
80 | #define _STAG_IOPORT 0x08 | |
81 | #define _STAG_FIXEDIO 0x09 | |
82 | #define _STAG_VENDOR 0x0e | |
83 | #define _STAG_END 0x0f | |
84 | /* long tags */ | |
85 | #define _LTAG_MEMRANGE 0x81 | |
86 | #define _LTAG_ANSISTR 0x82 | |
87 | #define _LTAG_UNICODESTR 0x83 | |
88 | #define _LTAG_VENDOR 0x84 | |
89 | #define _LTAG_MEM32RANGE 0x85 | |
90 | #define _LTAG_FIXEDMEM32RANGE 0x86 | |
91 | ||
ca0e8b6f BH |
92 | /* Logical device control and configuration registers */ |
93 | ||
94 | #define ISAPNP_CFG_ACTIVATE 0x30 /* byte */ | |
95 | #define ISAPNP_CFG_MEM 0x40 /* 4 * dword */ | |
96 | #define ISAPNP_CFG_PORT 0x60 /* 8 * word */ | |
97 | #define ISAPNP_CFG_IRQ 0x70 /* 2 * word */ | |
98 | #define ISAPNP_CFG_DMA 0x74 /* 2 * byte */ | |
99 | ||
245073f0 BH |
100 | /* |
101 | * Sizes of ISAPNP logical device configuration register sets. | |
102 | * See PNP-ISA-v1.0a.pdf, Appendix A. | |
103 | */ | |
104 | #define ISAPNP_MAX_MEM 4 | |
105 | #define ISAPNP_MAX_PORT 8 | |
106 | #define ISAPNP_MAX_IRQ 2 | |
107 | #define ISAPNP_MAX_DMA 2 | |
108 | ||
1da177e4 | 109 | static unsigned char isapnp_checksum_value; |
14cc3e2b | 110 | static DEFINE_MUTEX(isapnp_cfg_mutex); |
1da177e4 LT |
111 | static int isapnp_csn_count; |
112 | ||
113 | /* some prototypes */ | |
114 | ||
115 | static inline void write_data(unsigned char x) | |
116 | { | |
117 | outb(x, _PNPWRP); | |
118 | } | |
119 | ||
120 | static inline void write_address(unsigned char x) | |
121 | { | |
122 | outb(x, _PIDXR); | |
123 | udelay(20); | |
124 | } | |
125 | ||
126 | static inline unsigned char read_data(void) | |
127 | { | |
128 | unsigned char val = inb(isapnp_rdp); | |
129 | return val; | |
130 | } | |
131 | ||
132 | unsigned char isapnp_read_byte(unsigned char idx) | |
133 | { | |
134 | write_address(idx); | |
135 | return read_data(); | |
136 | } | |
137 | ||
138 | static unsigned short isapnp_read_word(unsigned char idx) | |
139 | { | |
140 | unsigned short val; | |
141 | ||
142 | val = isapnp_read_byte(idx); | |
9dd78466 | 143 | val = (val << 8) + isapnp_read_byte(idx + 1); |
1da177e4 LT |
144 | return val; |
145 | } | |
146 | ||
147 | void isapnp_write_byte(unsigned char idx, unsigned char val) | |
148 | { | |
149 | write_address(idx); | |
150 | write_data(val); | |
151 | } | |
152 | ||
153 | static void isapnp_write_word(unsigned char idx, unsigned short val) | |
154 | { | |
155 | isapnp_write_byte(idx, val >> 8); | |
9dd78466 | 156 | isapnp_write_byte(idx + 1, val); |
1da177e4 LT |
157 | } |
158 | ||
1da177e4 LT |
159 | static void isapnp_key(void) |
160 | { | |
161 | unsigned char code = 0x6a, msb; | |
162 | int i; | |
163 | ||
164 | mdelay(1); | |
165 | write_address(0x00); | |
166 | write_address(0x00); | |
167 | ||
168 | write_address(code); | |
169 | ||
170 | for (i = 1; i < 32; i++) { | |
171 | msb = ((code & 0x01) ^ ((code & 0x02) >> 1)) << 7; | |
172 | code = (code >> 1) | msb; | |
173 | write_address(code); | |
174 | } | |
175 | } | |
176 | ||
177 | /* place all pnp cards in wait-for-key state */ | |
178 | static void isapnp_wait(void) | |
179 | { | |
180 | isapnp_write_byte(0x02, 0x02); | |
181 | } | |
182 | ||
183 | static void isapnp_wake(unsigned char csn) | |
184 | { | |
185 | isapnp_write_byte(0x03, csn); | |
186 | } | |
187 | ||
188 | static void isapnp_device(unsigned char logdev) | |
189 | { | |
190 | isapnp_write_byte(0x07, logdev); | |
191 | } | |
192 | ||
193 | static void isapnp_activate(unsigned char logdev) | |
194 | { | |
195 | isapnp_device(logdev); | |
196 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 1); | |
197 | udelay(250); | |
198 | } | |
199 | ||
200 | static void isapnp_deactivate(unsigned char logdev) | |
201 | { | |
202 | isapnp_device(logdev); | |
203 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 0); | |
204 | udelay(500); | |
205 | } | |
206 | ||
207 | static void __init isapnp_peek(unsigned char *data, int bytes) | |
208 | { | |
209 | int i, j; | |
9dd78466 | 210 | unsigned char d = 0; |
1da177e4 LT |
211 | |
212 | for (i = 1; i <= bytes; i++) { | |
213 | for (j = 0; j < 20; j++) { | |
214 | d = isapnp_read_byte(0x05); | |
215 | if (d & 1) | |
216 | break; | |
217 | udelay(100); | |
218 | } | |
219 | if (!(d & 1)) { | |
220 | if (data != NULL) | |
221 | *data++ = 0xff; | |
222 | continue; | |
223 | } | |
224 | d = isapnp_read_byte(0x04); /* PRESDI */ | |
225 | isapnp_checksum_value += d; | |
226 | if (data != NULL) | |
227 | *data++ = d; | |
228 | } | |
229 | } | |
230 | ||
231 | #define RDP_STEP 32 /* minimum is 4 */ | |
232 | ||
233 | static int isapnp_next_rdp(void) | |
234 | { | |
235 | int rdp = isapnp_rdp; | |
236 | static int old_rdp = 0; | |
9dd78466 BH |
237 | |
238 | if (old_rdp) { | |
1da177e4 LT |
239 | release_region(old_rdp, 1); |
240 | old_rdp = 0; | |
241 | } | |
242 | while (rdp <= 0x3ff) { | |
243 | /* | |
9dd78466 BH |
244 | * We cannot use NE2000 probe spaces for ISAPnP or we |
245 | * will lock up machines. | |
1da177e4 | 246 | */ |
9dd78466 BH |
247 | if ((rdp < 0x280 || rdp > 0x380) |
248 | && request_region(rdp, 1, "ISAPnP")) { | |
1da177e4 LT |
249 | isapnp_rdp = rdp; |
250 | old_rdp = rdp; | |
251 | return 0; | |
252 | } | |
253 | rdp += RDP_STEP; | |
254 | } | |
255 | return -1; | |
256 | } | |
257 | ||
258 | /* Set read port address */ | |
259 | static inline void isapnp_set_rdp(void) | |
260 | { | |
261 | isapnp_write_byte(0x00, isapnp_rdp >> 2); | |
262 | udelay(100); | |
263 | } | |
264 | ||
265 | /* | |
266 | * Perform an isolation. The port selection code now tries to avoid | |
267 | * "dangerous to read" ports. | |
268 | */ | |
1da177e4 LT |
269 | static int __init isapnp_isolate_rdp_select(void) |
270 | { | |
271 | isapnp_wait(); | |
272 | isapnp_key(); | |
273 | ||
274 | /* Control: reset CSN and conditionally everything else too */ | |
275 | isapnp_write_byte(0x02, isapnp_reset ? 0x05 : 0x04); | |
276 | mdelay(2); | |
277 | ||
278 | isapnp_wait(); | |
279 | isapnp_key(); | |
280 | isapnp_wake(0x00); | |
281 | ||
282 | if (isapnp_next_rdp() < 0) { | |
283 | isapnp_wait(); | |
284 | return -1; | |
285 | } | |
286 | ||
287 | isapnp_set_rdp(); | |
288 | udelay(1000); | |
289 | write_address(0x01); | |
290 | udelay(1000); | |
291 | return 0; | |
292 | } | |
293 | ||
294 | /* | |
295 | * Isolate (assign uniqued CSN) to all ISA PnP devices. | |
296 | */ | |
1da177e4 LT |
297 | static int __init isapnp_isolate(void) |
298 | { | |
299 | unsigned char checksum = 0x6a; | |
300 | unsigned char chksum = 0x00; | |
301 | unsigned char bit = 0x00; | |
302 | int data; | |
303 | int csn = 0; | |
304 | int i; | |
305 | int iteration = 1; | |
306 | ||
307 | isapnp_rdp = 0x213; | |
308 | if (isapnp_isolate_rdp_select() < 0) | |
309 | return -1; | |
310 | ||
311 | while (1) { | |
312 | for (i = 1; i <= 64; i++) { | |
313 | data = read_data() << 8; | |
314 | udelay(250); | |
315 | data = data | read_data(); | |
316 | udelay(250); | |
317 | if (data == 0x55aa) | |
318 | bit = 0x01; | |
9dd78466 BH |
319 | checksum = |
320 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
321 | | (checksum >> 1); | |
1da177e4 LT |
322 | bit = 0x00; |
323 | } | |
324 | for (i = 65; i <= 72; i++) { | |
325 | data = read_data() << 8; | |
326 | udelay(250); | |
327 | data = data | read_data(); | |
328 | udelay(250); | |
329 | if (data == 0x55aa) | |
330 | chksum |= (1 << (i - 65)); | |
331 | } | |
332 | if (checksum != 0x00 && checksum == chksum) { | |
333 | csn++; | |
334 | ||
335 | isapnp_write_byte(0x06, csn); | |
336 | udelay(250); | |
337 | iteration++; | |
338 | isapnp_wake(0x00); | |
339 | isapnp_set_rdp(); | |
340 | udelay(1000); | |
341 | write_address(0x01); | |
342 | udelay(1000); | |
343 | goto __next; | |
344 | } | |
345 | if (iteration == 1) { | |
346 | isapnp_rdp += RDP_STEP; | |
347 | if (isapnp_isolate_rdp_select() < 0) | |
348 | return -1; | |
349 | } else if (iteration > 1) { | |
350 | break; | |
351 | } | |
1e0aa9ad | 352 | __next: |
1da177e4 LT |
353 | if (csn == 255) |
354 | break; | |
355 | checksum = 0x6a; | |
356 | chksum = 0x00; | |
357 | bit = 0x00; | |
358 | } | |
359 | isapnp_wait(); | |
360 | isapnp_csn_count = csn; | |
361 | return csn; | |
362 | } | |
363 | ||
364 | /* | |
365 | * Read one tag from stream. | |
366 | */ | |
1da177e4 LT |
367 | static int __init isapnp_read_tag(unsigned char *type, unsigned short *size) |
368 | { | |
369 | unsigned char tag, tmp[2]; | |
370 | ||
371 | isapnp_peek(&tag, 1); | |
9dd78466 | 372 | if (tag == 0) /* invalid tag */ |
1da177e4 LT |
373 | return -1; |
374 | if (tag & 0x80) { /* large item */ | |
375 | *type = tag; | |
376 | isapnp_peek(tmp, 2); | |
377 | *size = (tmp[1] << 8) | tmp[0]; | |
378 | } else { | |
379 | *type = (tag >> 3) & 0x0f; | |
380 | *size = tag & 0x07; | |
381 | } | |
382 | #if 0 | |
9dd78466 BH |
383 | printk(KERN_DEBUG "tag = 0x%x, type = 0x%x, size = %i\n", tag, *type, |
384 | *size); | |
1da177e4 | 385 | #endif |
1da177e4 LT |
386 | if (*type == 0xff && *size == 0xffff) /* probably invalid data */ |
387 | return -1; | |
388 | return 0; | |
389 | } | |
390 | ||
391 | /* | |
392 | * Skip specified number of bytes from stream. | |
393 | */ | |
1da177e4 LT |
394 | static void __init isapnp_skip_bytes(int count) |
395 | { | |
396 | isapnp_peek(NULL, count); | |
397 | } | |
398 | ||
1da177e4 LT |
399 | /* |
400 | * Parse logical device tag. | |
401 | */ | |
9dd78466 BH |
402 | static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, |
403 | int size, int number) | |
1da177e4 LT |
404 | { |
405 | unsigned char tmp[6]; | |
406 | struct pnp_dev *dev; | |
25eb8461 BH |
407 | u32 eisa_id; |
408 | char id[8]; | |
1da177e4 LT |
409 | |
410 | isapnp_peek(tmp, size); | |
25eb8461 BH |
411 | eisa_id = tmp[0] | tmp[1] << 8 | tmp[2] << 16 | tmp[3] << 24; |
412 | pnp_eisa_id_to_string(eisa_id, id); | |
bda1e4e5 BH |
413 | |
414 | dev = pnp_alloc_dev(&isapnp_protocol, number, id); | |
415 | if (!dev) | |
416 | return NULL; | |
417 | ||
1da177e4 | 418 | dev->card = card; |
1da177e4 LT |
419 | dev->capabilities |= PNP_CONFIGURABLE; |
420 | dev->capabilities |= PNP_READ; | |
421 | dev->capabilities |= PNP_WRITE; | |
422 | dev->capabilities |= PNP_DISABLE; | |
f4490002 | 423 | pnp_init_resources(dev); |
1da177e4 LT |
424 | return dev; |
425 | } | |
426 | ||
1da177e4 LT |
427 | /* |
428 | * Add IRQ resource to resources list. | |
429 | */ | |
c1caf06c | 430 | static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, |
1f32ca31 | 431 | unsigned int option_flags, |
9dd78466 | 432 | int size) |
1da177e4 LT |
433 | { |
434 | unsigned char tmp[3]; | |
1da177e4 | 435 | unsigned long bits; |
c227536b BH |
436 | pnp_irq_mask_t map; |
437 | unsigned char flags = IORESOURCE_IRQ_HIGHEDGE; | |
1da177e4 LT |
438 | |
439 | isapnp_peek(tmp, size); | |
1da177e4 | 440 | bits = (tmp[1] << 8) | tmp[0]; |
c227536b BH |
441 | |
442 | bitmap_zero(map.bits, PNP_IRQ_NR); | |
443 | bitmap_copy(map.bits, &bits, 16); | |
444 | ||
1da177e4 | 445 | if (size > 2) |
c227536b BH |
446 | flags = tmp[2]; |
447 | ||
1f32ca31 | 448 | pnp_register_irq_resource(dev, option_flags, &map, flags); |
1da177e4 LT |
449 | } |
450 | ||
451 | /* | |
452 | * Add DMA resource to resources list. | |
453 | */ | |
c1caf06c | 454 | static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, |
1f32ca31 | 455 | unsigned int option_flags, |
9dd78466 | 456 | int size) |
1da177e4 LT |
457 | { |
458 | unsigned char tmp[2]; | |
1da177e4 LT |
459 | |
460 | isapnp_peek(tmp, size); | |
1f32ca31 | 461 | pnp_register_dma_resource(dev, option_flags, tmp[0], tmp[1]); |
1da177e4 LT |
462 | } |
463 | ||
464 | /* | |
465 | * Add port resource to resources list. | |
466 | */ | |
c1caf06c | 467 | static void __init isapnp_parse_port_resource(struct pnp_dev *dev, |
1f32ca31 | 468 | unsigned int option_flags, |
9dd78466 | 469 | int size) |
1da177e4 LT |
470 | { |
471 | unsigned char tmp[7]; | |
c227536b BH |
472 | resource_size_t min, max, align, len; |
473 | unsigned char flags; | |
1da177e4 LT |
474 | |
475 | isapnp_peek(tmp, size); | |
c227536b BH |
476 | min = (tmp[2] << 8) | tmp[1]; |
477 | max = (tmp[4] << 8) | tmp[3]; | |
478 | align = tmp[5]; | |
479 | len = tmp[6]; | |
480 | flags = tmp[0] ? IORESOURCE_IO_16BIT_ADDR : 0; | |
1f32ca31 BH |
481 | pnp_register_port_resource(dev, option_flags, |
482 | min, max, align, len, flags); | |
1da177e4 LT |
483 | } |
484 | ||
485 | /* | |
486 | * Add fixed port resource to resources list. | |
487 | */ | |
c1caf06c | 488 | static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, |
1f32ca31 | 489 | unsigned int option_flags, |
9dd78466 | 490 | int size) |
1da177e4 LT |
491 | { |
492 | unsigned char tmp[3]; | |
c227536b | 493 | resource_size_t base, len; |
1da177e4 LT |
494 | |
495 | isapnp_peek(tmp, size); | |
c227536b BH |
496 | base = (tmp[1] << 8) | tmp[0]; |
497 | len = tmp[2]; | |
1f32ca31 | 498 | pnp_register_port_resource(dev, option_flags, base, base, 0, len, |
c227536b | 499 | IORESOURCE_IO_FIXED); |
1da177e4 LT |
500 | } |
501 | ||
502 | /* | |
503 | * Add memory resource to resources list. | |
504 | */ | |
c1caf06c | 505 | static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, |
1f32ca31 | 506 | unsigned int option_flags, |
9dd78466 | 507 | int size) |
1da177e4 LT |
508 | { |
509 | unsigned char tmp[9]; | |
c227536b BH |
510 | resource_size_t min, max, align, len; |
511 | unsigned char flags; | |
1da177e4 LT |
512 | |
513 | isapnp_peek(tmp, size); | |
c227536b BH |
514 | min = ((tmp[2] << 8) | tmp[1]) << 8; |
515 | max = ((tmp[4] << 8) | tmp[3]) << 8; | |
516 | align = (tmp[6] << 8) | tmp[5]; | |
517 | len = ((tmp[8] << 8) | tmp[7]) << 8; | |
518 | flags = tmp[0]; | |
1f32ca31 BH |
519 | pnp_register_mem_resource(dev, option_flags, |
520 | min, max, align, len, flags); | |
1da177e4 LT |
521 | } |
522 | ||
523 | /* | |
524 | * Add 32-bit memory resource to resources list. | |
525 | */ | |
c1caf06c | 526 | static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, |
1f32ca31 | 527 | unsigned int option_flags, |
9dd78466 | 528 | int size) |
1da177e4 LT |
529 | { |
530 | unsigned char tmp[17]; | |
c227536b BH |
531 | resource_size_t min, max, align, len; |
532 | unsigned char flags; | |
1da177e4 LT |
533 | |
534 | isapnp_peek(tmp, size); | |
c227536b BH |
535 | min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
536 | max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
537 | align = (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; | |
538 | len = (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; | |
539 | flags = tmp[0]; | |
1f32ca31 BH |
540 | pnp_register_mem_resource(dev, option_flags, |
541 | min, max, align, len, flags); | |
1da177e4 LT |
542 | } |
543 | ||
544 | /* | |
545 | * Add 32-bit fixed memory resource to resources list. | |
546 | */ | |
c1caf06c | 547 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, |
1f32ca31 | 548 | unsigned int option_flags, |
9dd78466 | 549 | int size) |
1da177e4 LT |
550 | { |
551 | unsigned char tmp[9]; | |
c227536b BH |
552 | resource_size_t base, len; |
553 | unsigned char flags; | |
1da177e4 LT |
554 | |
555 | isapnp_peek(tmp, size); | |
c227536b BH |
556 | base = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
557 | len = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
558 | flags = tmp[0]; | |
1f32ca31 | 559 | pnp_register_mem_resource(dev, option_flags, base, base, 0, len, flags); |
1da177e4 LT |
560 | } |
561 | ||
562 | /* | |
563 | * Parse card name for ISA PnP device. | |
9dd78466 | 564 | */ |
1da177e4 LT |
565 | static void __init |
566 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) | |
567 | { | |
568 | if (name[0] == '\0') { | |
9dd78466 BH |
569 | unsigned short size1 = |
570 | *size >= name_max ? (name_max - 1) : *size; | |
1da177e4 LT |
571 | isapnp_peek(name, size1); |
572 | name[size1] = '\0'; | |
573 | *size -= size1; | |
574 | ||
575 | /* clean whitespace from end of string */ | |
9dd78466 | 576 | while (size1 > 0 && name[--size1] == ' ') |
1da177e4 LT |
577 | name[size1] = '\0'; |
578 | } | |
579 | } | |
580 | ||
581 | /* | |
582 | * Parse resource map for logical device. | |
583 | */ | |
1da177e4 LT |
584 | static int __init isapnp_create_device(struct pnp_card *card, |
585 | unsigned short size) | |
586 | { | |
e2a1a6f1 | 587 | int number = 0, skip = 0, priority, compat = 0; |
1da177e4 | 588 | unsigned char type, tmp[17]; |
1f32ca31 | 589 | unsigned int option_flags; |
1da177e4 | 590 | struct pnp_dev *dev; |
25eb8461 BH |
591 | u32 eisa_id; |
592 | char id[8]; | |
07d4e9af | 593 | |
1da177e4 LT |
594 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
595 | return 1; | |
1f32ca31 | 596 | option_flags = 0; |
9dd78466 | 597 | pnp_add_card_device(card, dev); |
1da177e4 LT |
598 | |
599 | while (1) { | |
9dd78466 | 600 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
601 | return 1; |
602 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) | |
603 | goto __skip; | |
604 | switch (type) { | |
605 | case _STAG_LOGDEVID: | |
606 | if (size >= 5 && size <= 6) { | |
9dd78466 BH |
607 | if ((dev = |
608 | isapnp_parse_device(card, size, | |
609 | number++)) == NULL) | |
1da177e4 LT |
610 | return 1; |
611 | size = 0; | |
612 | skip = 0; | |
1f32ca31 | 613 | option_flags = 0; |
9dd78466 | 614 | pnp_add_card_device(card, dev); |
1da177e4 LT |
615 | } else { |
616 | skip = 1; | |
617 | } | |
1da177e4 LT |
618 | compat = 0; |
619 | break; | |
620 | case _STAG_COMPATDEVID: | |
621 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { | |
622 | isapnp_peek(tmp, 4); | |
25eb8461 BH |
623 | eisa_id = tmp[0] | tmp[1] << 8 | |
624 | tmp[2] << 16 | tmp[3] << 24; | |
625 | pnp_eisa_id_to_string(eisa_id, id); | |
626 | pnp_add_id(dev, id); | |
1da177e4 LT |
627 | compat++; |
628 | size = 0; | |
629 | } | |
630 | break; | |
631 | case _STAG_IRQ: | |
632 | if (size < 2 || size > 3) | |
633 | goto __skip; | |
1f32ca31 | 634 | isapnp_parse_irq_resource(dev, option_flags, size); |
1da177e4 LT |
635 | size = 0; |
636 | break; | |
637 | case _STAG_DMA: | |
638 | if (size != 2) | |
639 | goto __skip; | |
1f32ca31 | 640 | isapnp_parse_dma_resource(dev, option_flags, size); |
1da177e4 LT |
641 | size = 0; |
642 | break; | |
643 | case _STAG_STARTDEP: | |
644 | if (size > 1) | |
645 | goto __skip; | |
e2a1a6f1 | 646 | priority = PNP_RES_PRIORITY_ACCEPTABLE; |
1da177e4 LT |
647 | if (size > 0) { |
648 | isapnp_peek(tmp, size); | |
e2a1a6f1 | 649 | priority = tmp[0]; |
1da177e4 LT |
650 | size = 0; |
651 | } | |
1f32ca31 | 652 | option_flags = pnp_new_dependent_set(dev, priority); |
1da177e4 LT |
653 | break; |
654 | case _STAG_ENDDEP: | |
655 | if (size != 0) | |
656 | goto __skip; | |
1f32ca31 | 657 | option_flags = 0; |
1da177e4 LT |
658 | break; |
659 | case _STAG_IOPORT: | |
660 | if (size != 7) | |
661 | goto __skip; | |
1f32ca31 | 662 | isapnp_parse_port_resource(dev, option_flags, size); |
1da177e4 LT |
663 | size = 0; |
664 | break; | |
665 | case _STAG_FIXEDIO: | |
666 | if (size != 3) | |
667 | goto __skip; | |
1f32ca31 BH |
668 | isapnp_parse_fixed_port_resource(dev, option_flags, |
669 | size); | |
1da177e4 LT |
670 | size = 0; |
671 | break; | |
672 | case _STAG_VENDOR: | |
673 | break; | |
674 | case _LTAG_MEMRANGE: | |
675 | if (size != 9) | |
676 | goto __skip; | |
1f32ca31 | 677 | isapnp_parse_mem_resource(dev, option_flags, size); |
1da177e4 LT |
678 | size = 0; |
679 | break; | |
680 | case _LTAG_ANSISTR: | |
681 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); | |
682 | break; | |
683 | case _LTAG_UNICODESTR: | |
684 | /* silently ignore */ | |
685 | /* who use unicode for hardware identification? */ | |
686 | break; | |
687 | case _LTAG_VENDOR: | |
688 | break; | |
689 | case _LTAG_MEM32RANGE: | |
690 | if (size != 17) | |
691 | goto __skip; | |
1f32ca31 | 692 | isapnp_parse_mem32_resource(dev, option_flags, size); |
1da177e4 LT |
693 | size = 0; |
694 | break; | |
695 | case _LTAG_FIXEDMEM32RANGE: | |
696 | if (size != 9) | |
697 | goto __skip; | |
1f32ca31 BH |
698 | isapnp_parse_fixed_mem32_resource(dev, option_flags, |
699 | size); | |
1da177e4 LT |
700 | size = 0; |
701 | break; | |
702 | case _STAG_END: | |
703 | if (size > 0) | |
704 | isapnp_skip_bytes(size); | |
705 | return 1; | |
706 | default: | |
af11cb2d BH |
707 | dev_err(&dev->dev, "unknown tag %#x (card %i), " |
708 | "ignored\n", type, card->number); | |
1da177e4 | 709 | } |
1e0aa9ad | 710 | __skip: |
9dd78466 BH |
711 | if (size > 0) |
712 | isapnp_skip_bytes(size); | |
1da177e4 LT |
713 | } |
714 | return 0; | |
715 | } | |
716 | ||
717 | /* | |
718 | * Parse resource map for ISA PnP card. | |
719 | */ | |
1da177e4 LT |
720 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
721 | { | |
722 | unsigned char type, tmp[17]; | |
723 | unsigned short size; | |
724 | ||
725 | while (1) { | |
9dd78466 | 726 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
727 | return; |
728 | switch (type) { | |
729 | case _STAG_PNPVERNO: | |
730 | if (size != 2) | |
731 | goto __skip; | |
732 | isapnp_peek(tmp, 2); | |
733 | card->pnpver = tmp[0]; | |
734 | card->productver = tmp[1]; | |
735 | size = 0; | |
736 | break; | |
737 | case _STAG_LOGDEVID: | |
738 | if (size >= 5 && size <= 6) { | |
9dd78466 | 739 | if (isapnp_create_device(card, size) == 1) |
1da177e4 LT |
740 | return; |
741 | size = 0; | |
742 | } | |
743 | break; | |
744 | case _STAG_VENDOR: | |
745 | break; | |
746 | case _LTAG_ANSISTR: | |
9dd78466 BH |
747 | isapnp_parse_name(card->name, sizeof(card->name), |
748 | &size); | |
1da177e4 LT |
749 | break; |
750 | case _LTAG_UNICODESTR: | |
751 | /* silently ignore */ | |
752 | /* who use unicode for hardware identification? */ | |
753 | break; | |
754 | case _LTAG_VENDOR: | |
755 | break; | |
756 | case _STAG_END: | |
757 | if (size > 0) | |
758 | isapnp_skip_bytes(size); | |
759 | return; | |
760 | default: | |
af11cb2d BH |
761 | dev_err(&card->dev, "unknown tag %#x, ignored\n", |
762 | type); | |
1da177e4 | 763 | } |
1e0aa9ad | 764 | __skip: |
9dd78466 BH |
765 | if (size > 0) |
766 | isapnp_skip_bytes(size); | |
1da177e4 LT |
767 | } |
768 | } | |
769 | ||
770 | /* | |
771 | * Compute ISA PnP checksum for first eight bytes. | |
772 | */ | |
1da177e4 LT |
773 | static unsigned char __init isapnp_checksum(unsigned char *data) |
774 | { | |
775 | int i, j; | |
776 | unsigned char checksum = 0x6a, bit, b; | |
777 | ||
778 | for (i = 0; i < 8; i++) { | |
779 | b = data[i]; | |
780 | for (j = 0; j < 8; j++) { | |
781 | bit = 0; | |
782 | if (b & (1 << j)) | |
783 | bit = 1; | |
9dd78466 BH |
784 | checksum = |
785 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
786 | | (checksum >> 1); | |
1da177e4 LT |
787 | } |
788 | } | |
789 | return checksum; | |
790 | } | |
791 | ||
1da177e4 LT |
792 | /* |
793 | * Build device list for all present ISA PnP devices. | |
794 | */ | |
1da177e4 LT |
795 | static int __init isapnp_build_device_list(void) |
796 | { | |
797 | int csn; | |
798 | unsigned char header[9], checksum; | |
799 | struct pnp_card *card; | |
068076d5 BH |
800 | u32 eisa_id; |
801 | char id[8]; | |
1da177e4 LT |
802 | |
803 | isapnp_wait(); | |
804 | isapnp_key(); | |
805 | for (csn = 1; csn <= isapnp_csn_count; csn++) { | |
806 | isapnp_wake(csn); | |
807 | isapnp_peek(header, 9); | |
808 | checksum = isapnp_checksum(header); | |
068076d5 BH |
809 | eisa_id = header[0] | header[1] << 8 | |
810 | header[2] << 16 | header[3] << 24; | |
811 | pnp_eisa_id_to_string(eisa_id, id); | |
6bf2aab2 BH |
812 | card = pnp_alloc_card(&isapnp_protocol, csn, id); |
813 | if (!card) | |
814 | continue; | |
815 | ||
af11cb2d BH |
816 | #if 0 |
817 | dev_info(&card->dev, | |
818 | "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", | |
819 | header[0], header[1], header[2], header[3], header[4], | |
820 | header[5], header[6], header[7], header[8]); | |
821 | dev_info(&card->dev, "checksum = %#x\n", checksum); | |
822 | #endif | |
6bf2aab2 | 823 | INIT_LIST_HEAD(&card->devices); |
9dd78466 BH |
824 | card->serial = |
825 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | | |
826 | header[4]; | |
1da177e4 LT |
827 | isapnp_checksum_value = 0x00; |
828 | isapnp_parse_resource_map(card); | |
829 | if (isapnp_checksum_value != 0x00) | |
af11cb2d BH |
830 | dev_err(&card->dev, "invalid checksum %#x\n", |
831 | isapnp_checksum_value); | |
1da177e4 | 832 | card->checksum = isapnp_checksum_value; |
1da177e4 LT |
833 | |
834 | pnp_add_card(card); | |
835 | } | |
836 | isapnp_wait(); | |
837 | return 0; | |
838 | } | |
839 | ||
840 | /* | |
841 | * Basic configuration routines. | |
842 | */ | |
843 | ||
844 | int isapnp_present(void) | |
845 | { | |
846 | struct pnp_card *card; | |
07d4e9af | 847 | |
1da177e4 LT |
848 | pnp_for_each_card(card) { |
849 | if (card->protocol == &isapnp_protocol) | |
850 | return 1; | |
851 | } | |
852 | return 0; | |
853 | } | |
854 | ||
855 | int isapnp_cfg_begin(int csn, int logdev) | |
856 | { | |
857 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) | |
858 | return -EINVAL; | |
14cc3e2b | 859 | mutex_lock(&isapnp_cfg_mutex); |
1da177e4 LT |
860 | isapnp_wait(); |
861 | isapnp_key(); | |
862 | isapnp_wake(csn); | |
863 | #if 0 | |
864 | /* to avoid malfunction when the isapnptools package is used */ | |
865 | /* we must set RDP to our value again */ | |
866 | /* it is possible to set RDP only in the isolation phase */ | |
867 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ | |
868 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ | |
9dd78466 BH |
869 | mdelay(2); /* is this necessary? */ |
870 | isapnp_wake(csn); /* bring card into sleep state */ | |
871 | isapnp_wake(0); /* bring card into isolation state */ | |
872 | isapnp_set_rdp(); /* reset the RDP port */ | |
873 | udelay(1000); /* delay 1000us */ | |
1da177e4 | 874 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
9dd78466 | 875 | udelay(250); /* is this necessary? */ |
1da177e4 LT |
876 | #endif |
877 | if (logdev >= 0) | |
878 | isapnp_device(logdev); | |
879 | return 0; | |
880 | } | |
881 | ||
882 | int isapnp_cfg_end(void) | |
883 | { | |
884 | isapnp_wait(); | |
14cc3e2b | 885 | mutex_unlock(&isapnp_cfg_mutex); |
1da177e4 LT |
886 | return 0; |
887 | } | |
888 | ||
1da177e4 | 889 | /* |
07d4e9af | 890 | * Initialization. |
1da177e4 LT |
891 | */ |
892 | ||
1da177e4 LT |
893 | EXPORT_SYMBOL(isapnp_protocol); |
894 | EXPORT_SYMBOL(isapnp_present); | |
895 | EXPORT_SYMBOL(isapnp_cfg_begin); | |
896 | EXPORT_SYMBOL(isapnp_cfg_end); | |
1da177e4 LT |
897 | EXPORT_SYMBOL(isapnp_write_byte); |
898 | ||
01115e7d | 899 | static int isapnp_get_resources(struct pnp_dev *dev) |
1da177e4 | 900 | { |
01115e7d | 901 | int i, ret; |
1da177e4 | 902 | |
2f53432c | 903 | pnp_dbg(&dev->dev, "get resources\n"); |
01115e7d BH |
904 | pnp_init_resources(dev); |
905 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1da177e4 | 906 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); |
01115e7d BH |
907 | if (!dev->active) |
908 | goto __end; | |
909 | ||
910 | for (i = 0; i < ISAPNP_MAX_PORT; i++) { | |
911 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1)); | |
87e4acf3 BH |
912 | pnp_add_io_resource(dev, ret, ret, |
913 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
914 | } |
915 | for (i = 0; i < ISAPNP_MAX_MEM; i++) { | |
916 | ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8; | |
87e4acf3 BH |
917 | pnp_add_mem_resource(dev, ret, ret, |
918 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
919 | } |
920 | for (i = 0; i < ISAPNP_MAX_IRQ; i++) { | |
921 | ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8; | |
87e4acf3 BH |
922 | pnp_add_irq_resource(dev, ret, |
923 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
924 | } |
925 | for (i = 0; i < ISAPNP_MAX_DMA; i++) { | |
926 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + i); | |
87e4acf3 BH |
927 | pnp_add_dma_resource(dev, ret, |
928 | ret == 4 ? IORESOURCE_DISABLED : 0); | |
1da177e4 | 929 | } |
1e0aa9ad | 930 | |
01115e7d | 931 | __end: |
1da177e4 | 932 | isapnp_cfg_end(); |
01115e7d | 933 | return 0; |
1da177e4 LT |
934 | } |
935 | ||
59284cb4 | 936 | static int isapnp_set_resources(struct pnp_dev *dev) |
1da177e4 | 937 | { |
06cb58a6 | 938 | struct resource *res; |
87e4acf3 | 939 | int tmp; |
1da177e4 | 940 | |
2f53432c | 941 | pnp_dbg(&dev->dev, "set resources\n"); |
1da177e4 LT |
942 | isapnp_cfg_begin(dev->card->number, dev->number); |
943 | dev->active = 1; | |
06cb58a6 | 944 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
87e4acf3 | 945 | res = pnp_get_resource(dev, IORESOURCE_IO, tmp); |
aee3ad81 | 946 | if (pnp_resource_enabled(res)) { |
2f53432c | 947 | pnp_dbg(&dev->dev, " set io %d to %#llx\n", |
87e4acf3 BH |
948 | tmp, (unsigned long long) res->start); |
949 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), | |
06cb58a6 BH |
950 | res->start); |
951 | } | |
72dcc883 | 952 | } |
06cb58a6 | 953 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
87e4acf3 | 954 | res = pnp_get_resource(dev, IORESOURCE_IRQ, tmp); |
aee3ad81 | 955 | if (pnp_resource_enabled(res)) { |
06cb58a6 BH |
956 | int irq = res->start; |
957 | if (irq == 2) | |
958 | irq = 9; | |
2f53432c | 959 | pnp_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); |
87e4acf3 | 960 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); |
06cb58a6 | 961 | } |
1da177e4 | 962 | } |
06cb58a6 | 963 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
87e4acf3 | 964 | res = pnp_get_resource(dev, IORESOURCE_DMA, tmp); |
aee3ad81 | 965 | if (pnp_resource_enabled(res)) { |
2f53432c | 966 | pnp_dbg(&dev->dev, " set dma %d to %lld\n", |
87e4acf3 BH |
967 | tmp, (unsigned long long) res->start); |
968 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, res->start); | |
06cb58a6 | 969 | } |
72dcc883 | 970 | } |
06cb58a6 | 971 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
87e4acf3 | 972 | res = pnp_get_resource(dev, IORESOURCE_MEM, tmp); |
aee3ad81 | 973 | if (pnp_resource_enabled(res)) { |
2f53432c | 974 | pnp_dbg(&dev->dev, " set mem %d to %#llx\n", |
87e4acf3 BH |
975 | tmp, (unsigned long long) res->start); |
976 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), | |
06cb58a6 BH |
977 | (res->start >> 8) & 0xffff); |
978 | } | |
72dcc883 | 979 | } |
1da177e4 LT |
980 | /* FIXME: We aren't handling 32bit mems properly here */ |
981 | isapnp_activate(dev->number); | |
982 | isapnp_cfg_end(); | |
983 | return 0; | |
984 | } | |
985 | ||
986 | static int isapnp_disable_resources(struct pnp_dev *dev) | |
987 | { | |
b1734913 | 988 | if (!dev->active) |
1da177e4 LT |
989 | return -EINVAL; |
990 | isapnp_cfg_begin(dev->card->number, dev->number); | |
991 | isapnp_deactivate(dev->number); | |
992 | dev->active = 0; | |
993 | isapnp_cfg_end(); | |
994 | return 0; | |
995 | } | |
996 | ||
997 | struct pnp_protocol isapnp_protocol = { | |
9dd78466 BH |
998 | .name = "ISA Plug and Play", |
999 | .get = isapnp_get_resources, | |
1000 | .set = isapnp_set_resources, | |
1da177e4 LT |
1001 | .disable = isapnp_disable_resources, |
1002 | }; | |
1003 | ||
1004 | static int __init isapnp_init(void) | |
1005 | { | |
1006 | int cards; | |
1007 | struct pnp_card *card; | |
1008 | struct pnp_dev *dev; | |
1009 | ||
1010 | if (isapnp_disable) { | |
1da177e4 LT |
1011 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
1012 | return 0; | |
1013 | } | |
68e1ee62 | 1014 | #ifdef CONFIG_PPC |
07bd1c4a DW |
1015 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) |
1016 | return -EINVAL; | |
1017 | #endif | |
1da177e4 LT |
1018 | #ifdef ISAPNP_REGION_OK |
1019 | if (!request_region(_PIDXR, 1, "isapnp index")) { | |
9dd78466 BH |
1020 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
1021 | _PIDXR); | |
1da177e4 LT |
1022 | return -EBUSY; |
1023 | } | |
1024 | #endif | |
1025 | if (!request_region(_PNPWRP, 1, "isapnp write")) { | |
9dd78466 BH |
1026 | printk(KERN_ERR |
1027 | "isapnp: Write Data Register 0x%x already used\n", | |
1028 | _PNPWRP); | |
1da177e4 LT |
1029 | #ifdef ISAPNP_REGION_OK |
1030 | release_region(_PIDXR, 1); | |
1031 | #endif | |
1032 | return -EBUSY; | |
1033 | } | |
1034 | ||
9dd78466 | 1035 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
1da177e4 LT |
1036 | return -EBUSY; |
1037 | ||
1038 | /* | |
9dd78466 BH |
1039 | * Print a message. The existing ISAPnP code is hanging machines |
1040 | * so let the user know where. | |
1da177e4 | 1041 | */ |
9dd78466 | 1042 | |
1da177e4 LT |
1043 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
1044 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { | |
1045 | isapnp_rdp |= 3; | |
1046 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { | |
9dd78466 BH |
1047 | printk(KERN_ERR |
1048 | "isapnp: Read Data Register 0x%x already used\n", | |
1049 | isapnp_rdp); | |
1da177e4 LT |
1050 | #ifdef ISAPNP_REGION_OK |
1051 | release_region(_PIDXR, 1); | |
1052 | #endif | |
1053 | release_region(_PNPWRP, 1); | |
1054 | return -EBUSY; | |
1055 | } | |
1056 | isapnp_set_rdp(); | |
1057 | } | |
1da177e4 LT |
1058 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
1059 | cards = isapnp_isolate(); | |
9dd78466 | 1060 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
1da177e4 LT |
1061 | #ifdef ISAPNP_REGION_OK |
1062 | release_region(_PIDXR, 1); | |
1063 | #endif | |
1064 | release_region(_PNPWRP, 1); | |
9dd78466 BH |
1065 | printk(KERN_INFO |
1066 | "isapnp: No Plug & Play device found\n"); | |
1da177e4 LT |
1067 | return 0; |
1068 | } | |
1069 | request_region(isapnp_rdp, 1, "isapnp read"); | |
1070 | } | |
1071 | isapnp_build_device_list(); | |
1072 | cards = 0; | |
1073 | ||
9dd78466 | 1074 | protocol_for_each_card(&isapnp_protocol, card) { |
1da177e4 LT |
1075 | cards++; |
1076 | if (isapnp_verbose) { | |
af11cb2d BH |
1077 | dev_info(&card->dev, "card '%s'\n", |
1078 | card->name[0] ? card->name : "unknown"); | |
1da177e4 LT |
1079 | if (isapnp_verbose < 2) |
1080 | continue; | |
9dd78466 | 1081 | card_for_each_dev(card, dev) { |
af11cb2d BH |
1082 | dev_info(&card->dev, "device '%s'\n", |
1083 | dev->name[0] ? dev->name : "unknown"); | |
1da177e4 LT |
1084 | } |
1085 | } | |
1086 | } | |
1e0aa9ad | 1087 | if (cards) |
9dd78466 BH |
1088 | printk(KERN_INFO |
1089 | "isapnp: %i Plug & Play card%s detected total\n", cards, | |
1090 | cards > 1 ? "s" : ""); | |
1e0aa9ad | 1091 | else |
1da177e4 | 1092 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
1da177e4 LT |
1093 | |
1094 | isapnp_proc_init(); | |
1095 | return 0; | |
1096 | } | |
1097 | ||
1098 | device_initcall(isapnp_init); | |
1099 | ||
1100 | /* format is: noisapnp */ | |
1101 | ||
1102 | static int __init isapnp_setup_disable(char *str) | |
1103 | { | |
1104 | isapnp_disable = 1; | |
1105 | return 1; | |
1106 | } | |
1107 | ||
1108 | __setup("noisapnp", isapnp_setup_disable); | |
1109 | ||
1110 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ | |
1111 | ||
1112 | static int __init isapnp_setup_isapnp(char *str) | |
1113 | { | |
9dd78466 BH |
1114 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
1115 | (get_option(&str, &isapnp_reset) == 2) && | |
1116 | (get_option(&str, &isapnp_verbose) == 2)); | |
1da177e4 LT |
1117 | return 1; |
1118 | } | |
1119 | ||
1120 | __setup("isapnp=", isapnp_setup_isapnp); |