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 | ||
e4dca0fe | 37 | #include <linux/moduleparam.h> |
1da177e4 LT |
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 | |
1da177e4 LT |
57 | module_param(isapnp_disable, int, 0); |
58 | MODULE_PARM_DESC(isapnp_disable, "ISA Plug & Play disable"); | |
59 | module_param(isapnp_rdp, int, 0); | |
60 | MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port"); | |
61 | module_param(isapnp_reset, int, 0); | |
62 | MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards"); | |
63 | module_param(isapnp_verbose, int, 0); | |
64 | MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode"); | |
1da177e4 LT |
65 | |
66 | #define _PIDXR 0x279 | |
67 | #define _PNPWRP 0xa79 | |
68 | ||
69 | /* short tags */ | |
70 | #define _STAG_PNPVERNO 0x01 | |
71 | #define _STAG_LOGDEVID 0x02 | |
72 | #define _STAG_COMPATDEVID 0x03 | |
73 | #define _STAG_IRQ 0x04 | |
74 | #define _STAG_DMA 0x05 | |
75 | #define _STAG_STARTDEP 0x06 | |
76 | #define _STAG_ENDDEP 0x07 | |
77 | #define _STAG_IOPORT 0x08 | |
78 | #define _STAG_FIXEDIO 0x09 | |
79 | #define _STAG_VENDOR 0x0e | |
80 | #define _STAG_END 0x0f | |
81 | /* long tags */ | |
82 | #define _LTAG_MEMRANGE 0x81 | |
83 | #define _LTAG_ANSISTR 0x82 | |
84 | #define _LTAG_UNICODESTR 0x83 | |
85 | #define _LTAG_VENDOR 0x84 | |
86 | #define _LTAG_MEM32RANGE 0x85 | |
87 | #define _LTAG_FIXEDMEM32RANGE 0x86 | |
88 | ||
ca0e8b6f BH |
89 | /* Logical device control and configuration registers */ |
90 | ||
91 | #define ISAPNP_CFG_ACTIVATE 0x30 /* byte */ | |
92 | #define ISAPNP_CFG_MEM 0x40 /* 4 * dword */ | |
93 | #define ISAPNP_CFG_PORT 0x60 /* 8 * word */ | |
94 | #define ISAPNP_CFG_IRQ 0x70 /* 2 * word */ | |
95 | #define ISAPNP_CFG_DMA 0x74 /* 2 * byte */ | |
96 | ||
245073f0 BH |
97 | /* |
98 | * Sizes of ISAPNP logical device configuration register sets. | |
99 | * See PNP-ISA-v1.0a.pdf, Appendix A. | |
100 | */ | |
101 | #define ISAPNP_MAX_MEM 4 | |
102 | #define ISAPNP_MAX_PORT 8 | |
103 | #define ISAPNP_MAX_IRQ 2 | |
104 | #define ISAPNP_MAX_DMA 2 | |
105 | ||
1da177e4 | 106 | static unsigned char isapnp_checksum_value; |
14cc3e2b | 107 | static DEFINE_MUTEX(isapnp_cfg_mutex); |
1da177e4 LT |
108 | static int isapnp_csn_count; |
109 | ||
110 | /* some prototypes */ | |
111 | ||
112 | static inline void write_data(unsigned char x) | |
113 | { | |
114 | outb(x, _PNPWRP); | |
115 | } | |
116 | ||
117 | static inline void write_address(unsigned char x) | |
118 | { | |
119 | outb(x, _PIDXR); | |
120 | udelay(20); | |
121 | } | |
122 | ||
123 | static inline unsigned char read_data(void) | |
124 | { | |
125 | unsigned char val = inb(isapnp_rdp); | |
126 | return val; | |
127 | } | |
128 | ||
129 | unsigned char isapnp_read_byte(unsigned char idx) | |
130 | { | |
131 | write_address(idx); | |
132 | return read_data(); | |
133 | } | |
134 | ||
135 | static unsigned short isapnp_read_word(unsigned char idx) | |
136 | { | |
137 | unsigned short val; | |
138 | ||
139 | val = isapnp_read_byte(idx); | |
9dd78466 | 140 | val = (val << 8) + isapnp_read_byte(idx + 1); |
1da177e4 LT |
141 | return val; |
142 | } | |
143 | ||
144 | void isapnp_write_byte(unsigned char idx, unsigned char val) | |
145 | { | |
146 | write_address(idx); | |
147 | write_data(val); | |
148 | } | |
149 | ||
150 | static void isapnp_write_word(unsigned char idx, unsigned short val) | |
151 | { | |
152 | isapnp_write_byte(idx, val >> 8); | |
9dd78466 | 153 | isapnp_write_byte(idx + 1, val); |
1da177e4 LT |
154 | } |
155 | ||
1da177e4 LT |
156 | static void isapnp_key(void) |
157 | { | |
158 | unsigned char code = 0x6a, msb; | |
159 | int i; | |
160 | ||
161 | mdelay(1); | |
162 | write_address(0x00); | |
163 | write_address(0x00); | |
164 | ||
165 | write_address(code); | |
166 | ||
167 | for (i = 1; i < 32; i++) { | |
168 | msb = ((code & 0x01) ^ ((code & 0x02) >> 1)) << 7; | |
169 | code = (code >> 1) | msb; | |
170 | write_address(code); | |
171 | } | |
172 | } | |
173 | ||
174 | /* place all pnp cards in wait-for-key state */ | |
175 | static void isapnp_wait(void) | |
176 | { | |
177 | isapnp_write_byte(0x02, 0x02); | |
178 | } | |
179 | ||
180 | static void isapnp_wake(unsigned char csn) | |
181 | { | |
182 | isapnp_write_byte(0x03, csn); | |
183 | } | |
184 | ||
185 | static void isapnp_device(unsigned char logdev) | |
186 | { | |
187 | isapnp_write_byte(0x07, logdev); | |
188 | } | |
189 | ||
190 | static void isapnp_activate(unsigned char logdev) | |
191 | { | |
192 | isapnp_device(logdev); | |
193 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 1); | |
194 | udelay(250); | |
195 | } | |
196 | ||
197 | static void isapnp_deactivate(unsigned char logdev) | |
198 | { | |
199 | isapnp_device(logdev); | |
200 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 0); | |
201 | udelay(500); | |
202 | } | |
203 | ||
204 | static void __init isapnp_peek(unsigned char *data, int bytes) | |
205 | { | |
206 | int i, j; | |
9dd78466 | 207 | unsigned char d = 0; |
1da177e4 LT |
208 | |
209 | for (i = 1; i <= bytes; i++) { | |
210 | for (j = 0; j < 20; j++) { | |
211 | d = isapnp_read_byte(0x05); | |
212 | if (d & 1) | |
213 | break; | |
214 | udelay(100); | |
215 | } | |
216 | if (!(d & 1)) { | |
217 | if (data != NULL) | |
218 | *data++ = 0xff; | |
219 | continue; | |
220 | } | |
221 | d = isapnp_read_byte(0x04); /* PRESDI */ | |
222 | isapnp_checksum_value += d; | |
223 | if (data != NULL) | |
224 | *data++ = d; | |
225 | } | |
226 | } | |
227 | ||
228 | #define RDP_STEP 32 /* minimum is 4 */ | |
229 | ||
230 | static int isapnp_next_rdp(void) | |
231 | { | |
232 | int rdp = isapnp_rdp; | |
233 | static int old_rdp = 0; | |
9dd78466 BH |
234 | |
235 | if (old_rdp) { | |
1da177e4 LT |
236 | release_region(old_rdp, 1); |
237 | old_rdp = 0; | |
238 | } | |
239 | while (rdp <= 0x3ff) { | |
240 | /* | |
9dd78466 BH |
241 | * We cannot use NE2000 probe spaces for ISAPnP or we |
242 | * will lock up machines. | |
1da177e4 | 243 | */ |
9dd78466 BH |
244 | if ((rdp < 0x280 || rdp > 0x380) |
245 | && request_region(rdp, 1, "ISAPnP")) { | |
1da177e4 LT |
246 | isapnp_rdp = rdp; |
247 | old_rdp = rdp; | |
248 | return 0; | |
249 | } | |
250 | rdp += RDP_STEP; | |
251 | } | |
252 | return -1; | |
253 | } | |
254 | ||
255 | /* Set read port address */ | |
256 | static inline void isapnp_set_rdp(void) | |
257 | { | |
258 | isapnp_write_byte(0x00, isapnp_rdp >> 2); | |
259 | udelay(100); | |
260 | } | |
261 | ||
262 | /* | |
263 | * Perform an isolation. The port selection code now tries to avoid | |
264 | * "dangerous to read" ports. | |
265 | */ | |
1da177e4 LT |
266 | static int __init isapnp_isolate_rdp_select(void) |
267 | { | |
268 | isapnp_wait(); | |
269 | isapnp_key(); | |
270 | ||
271 | /* Control: reset CSN and conditionally everything else too */ | |
272 | isapnp_write_byte(0x02, isapnp_reset ? 0x05 : 0x04); | |
273 | mdelay(2); | |
274 | ||
275 | isapnp_wait(); | |
276 | isapnp_key(); | |
277 | isapnp_wake(0x00); | |
278 | ||
279 | if (isapnp_next_rdp() < 0) { | |
280 | isapnp_wait(); | |
281 | return -1; | |
282 | } | |
283 | ||
284 | isapnp_set_rdp(); | |
285 | udelay(1000); | |
286 | write_address(0x01); | |
287 | udelay(1000); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | /* | |
292 | * Isolate (assign uniqued CSN) to all ISA PnP devices. | |
293 | */ | |
1da177e4 LT |
294 | static int __init isapnp_isolate(void) |
295 | { | |
296 | unsigned char checksum = 0x6a; | |
297 | unsigned char chksum = 0x00; | |
298 | unsigned char bit = 0x00; | |
299 | int data; | |
300 | int csn = 0; | |
301 | int i; | |
302 | int iteration = 1; | |
303 | ||
304 | isapnp_rdp = 0x213; | |
305 | if (isapnp_isolate_rdp_select() < 0) | |
306 | return -1; | |
307 | ||
308 | while (1) { | |
309 | for (i = 1; i <= 64; i++) { | |
310 | data = read_data() << 8; | |
311 | udelay(250); | |
312 | data = data | read_data(); | |
313 | udelay(250); | |
314 | if (data == 0x55aa) | |
315 | bit = 0x01; | |
9dd78466 BH |
316 | checksum = |
317 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
318 | | (checksum >> 1); | |
1da177e4 LT |
319 | bit = 0x00; |
320 | } | |
321 | for (i = 65; i <= 72; i++) { | |
322 | data = read_data() << 8; | |
323 | udelay(250); | |
324 | data = data | read_data(); | |
325 | udelay(250); | |
326 | if (data == 0x55aa) | |
327 | chksum |= (1 << (i - 65)); | |
328 | } | |
329 | if (checksum != 0x00 && checksum == chksum) { | |
330 | csn++; | |
331 | ||
332 | isapnp_write_byte(0x06, csn); | |
333 | udelay(250); | |
334 | iteration++; | |
335 | isapnp_wake(0x00); | |
336 | isapnp_set_rdp(); | |
337 | udelay(1000); | |
338 | write_address(0x01); | |
339 | udelay(1000); | |
340 | goto __next; | |
341 | } | |
342 | if (iteration == 1) { | |
343 | isapnp_rdp += RDP_STEP; | |
344 | if (isapnp_isolate_rdp_select() < 0) | |
345 | return -1; | |
346 | } else if (iteration > 1) { | |
347 | break; | |
348 | } | |
1e0aa9ad | 349 | __next: |
1da177e4 LT |
350 | if (csn == 255) |
351 | break; | |
352 | checksum = 0x6a; | |
353 | chksum = 0x00; | |
354 | bit = 0x00; | |
355 | } | |
356 | isapnp_wait(); | |
357 | isapnp_csn_count = csn; | |
358 | return csn; | |
359 | } | |
360 | ||
361 | /* | |
362 | * Read one tag from stream. | |
363 | */ | |
1da177e4 LT |
364 | static int __init isapnp_read_tag(unsigned char *type, unsigned short *size) |
365 | { | |
366 | unsigned char tag, tmp[2]; | |
367 | ||
368 | isapnp_peek(&tag, 1); | |
9dd78466 | 369 | if (tag == 0) /* invalid tag */ |
1da177e4 LT |
370 | return -1; |
371 | if (tag & 0x80) { /* large item */ | |
372 | *type = tag; | |
373 | isapnp_peek(tmp, 2); | |
374 | *size = (tmp[1] << 8) | tmp[0]; | |
375 | } else { | |
376 | *type = (tag >> 3) & 0x0f; | |
377 | *size = tag & 0x07; | |
378 | } | |
1da177e4 LT |
379 | if (*type == 0xff && *size == 0xffff) /* probably invalid data */ |
380 | return -1; | |
381 | return 0; | |
382 | } | |
383 | ||
384 | /* | |
385 | * Skip specified number of bytes from stream. | |
386 | */ | |
1da177e4 LT |
387 | static void __init isapnp_skip_bytes(int count) |
388 | { | |
389 | isapnp_peek(NULL, count); | |
390 | } | |
391 | ||
1da177e4 LT |
392 | /* |
393 | * Parse logical device tag. | |
394 | */ | |
9dd78466 BH |
395 | static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, |
396 | int size, int number) | |
1da177e4 LT |
397 | { |
398 | unsigned char tmp[6]; | |
399 | struct pnp_dev *dev; | |
25eb8461 BH |
400 | u32 eisa_id; |
401 | char id[8]; | |
1da177e4 LT |
402 | |
403 | isapnp_peek(tmp, size); | |
25eb8461 BH |
404 | eisa_id = tmp[0] | tmp[1] << 8 | tmp[2] << 16 | tmp[3] << 24; |
405 | pnp_eisa_id_to_string(eisa_id, id); | |
bda1e4e5 BH |
406 | |
407 | dev = pnp_alloc_dev(&isapnp_protocol, number, id); | |
408 | if (!dev) | |
409 | return NULL; | |
410 | ||
1da177e4 | 411 | dev->card = card; |
1da177e4 LT |
412 | dev->capabilities |= PNP_CONFIGURABLE; |
413 | dev->capabilities |= PNP_READ; | |
414 | dev->capabilities |= PNP_WRITE; | |
415 | dev->capabilities |= PNP_DISABLE; | |
f4490002 | 416 | pnp_init_resources(dev); |
1da177e4 LT |
417 | return dev; |
418 | } | |
419 | ||
1da177e4 LT |
420 | /* |
421 | * Add IRQ resource to resources list. | |
422 | */ | |
c1caf06c | 423 | static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, |
1f32ca31 | 424 | unsigned int option_flags, |
9dd78466 | 425 | int size) |
1da177e4 LT |
426 | { |
427 | unsigned char tmp[3]; | |
1da177e4 | 428 | unsigned long bits; |
c227536b BH |
429 | pnp_irq_mask_t map; |
430 | unsigned char flags = IORESOURCE_IRQ_HIGHEDGE; | |
1da177e4 LT |
431 | |
432 | isapnp_peek(tmp, size); | |
1da177e4 | 433 | bits = (tmp[1] << 8) | tmp[0]; |
c227536b BH |
434 | |
435 | bitmap_zero(map.bits, PNP_IRQ_NR); | |
436 | bitmap_copy(map.bits, &bits, 16); | |
437 | ||
1da177e4 | 438 | if (size > 2) |
c227536b BH |
439 | flags = tmp[2]; |
440 | ||
1f32ca31 | 441 | pnp_register_irq_resource(dev, option_flags, &map, flags); |
1da177e4 LT |
442 | } |
443 | ||
444 | /* | |
445 | * Add DMA resource to resources list. | |
446 | */ | |
c1caf06c | 447 | static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, |
1f32ca31 | 448 | unsigned int option_flags, |
9dd78466 | 449 | int size) |
1da177e4 LT |
450 | { |
451 | unsigned char tmp[2]; | |
1da177e4 LT |
452 | |
453 | isapnp_peek(tmp, size); | |
1f32ca31 | 454 | pnp_register_dma_resource(dev, option_flags, tmp[0], tmp[1]); |
1da177e4 LT |
455 | } |
456 | ||
457 | /* | |
458 | * Add port resource to resources list. | |
459 | */ | |
c1caf06c | 460 | static void __init isapnp_parse_port_resource(struct pnp_dev *dev, |
1f32ca31 | 461 | unsigned int option_flags, |
9dd78466 | 462 | int size) |
1da177e4 LT |
463 | { |
464 | unsigned char tmp[7]; | |
c227536b BH |
465 | resource_size_t min, max, align, len; |
466 | unsigned char flags; | |
1da177e4 LT |
467 | |
468 | isapnp_peek(tmp, size); | |
c227536b BH |
469 | min = (tmp[2] << 8) | tmp[1]; |
470 | max = (tmp[4] << 8) | tmp[3]; | |
471 | align = tmp[5]; | |
472 | len = tmp[6]; | |
473 | flags = tmp[0] ? IORESOURCE_IO_16BIT_ADDR : 0; | |
1f32ca31 BH |
474 | pnp_register_port_resource(dev, option_flags, |
475 | min, max, align, len, flags); | |
1da177e4 LT |
476 | } |
477 | ||
478 | /* | |
479 | * Add fixed port resource to resources list. | |
480 | */ | |
c1caf06c | 481 | static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, |
1f32ca31 | 482 | unsigned int option_flags, |
9dd78466 | 483 | int size) |
1da177e4 LT |
484 | { |
485 | unsigned char tmp[3]; | |
c227536b | 486 | resource_size_t base, len; |
1da177e4 LT |
487 | |
488 | isapnp_peek(tmp, size); | |
c227536b BH |
489 | base = (tmp[1] << 8) | tmp[0]; |
490 | len = tmp[2]; | |
1f32ca31 | 491 | pnp_register_port_resource(dev, option_flags, base, base, 0, len, |
c227536b | 492 | IORESOURCE_IO_FIXED); |
1da177e4 LT |
493 | } |
494 | ||
495 | /* | |
496 | * Add memory resource to resources list. | |
497 | */ | |
c1caf06c | 498 | static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, |
1f32ca31 | 499 | unsigned int option_flags, |
9dd78466 | 500 | int size) |
1da177e4 LT |
501 | { |
502 | unsigned char tmp[9]; | |
c227536b BH |
503 | resource_size_t min, max, align, len; |
504 | unsigned char flags; | |
1da177e4 LT |
505 | |
506 | isapnp_peek(tmp, size); | |
c227536b BH |
507 | min = ((tmp[2] << 8) | tmp[1]) << 8; |
508 | max = ((tmp[4] << 8) | tmp[3]) << 8; | |
509 | align = (tmp[6] << 8) | tmp[5]; | |
510 | len = ((tmp[8] << 8) | tmp[7]) << 8; | |
511 | flags = tmp[0]; | |
1f32ca31 BH |
512 | pnp_register_mem_resource(dev, option_flags, |
513 | min, max, align, len, flags); | |
1da177e4 LT |
514 | } |
515 | ||
516 | /* | |
517 | * Add 32-bit memory resource to resources list. | |
518 | */ | |
c1caf06c | 519 | static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, |
1f32ca31 | 520 | unsigned int option_flags, |
9dd78466 | 521 | int size) |
1da177e4 LT |
522 | { |
523 | unsigned char tmp[17]; | |
c227536b BH |
524 | resource_size_t min, max, align, len; |
525 | unsigned char flags; | |
1da177e4 LT |
526 | |
527 | isapnp_peek(tmp, size); | |
c227536b BH |
528 | min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
529 | max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
530 | align = (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; | |
531 | len = (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; | |
532 | flags = tmp[0]; | |
1f32ca31 BH |
533 | pnp_register_mem_resource(dev, option_flags, |
534 | min, max, align, len, flags); | |
1da177e4 LT |
535 | } |
536 | ||
537 | /* | |
538 | * Add 32-bit fixed memory resource to resources list. | |
539 | */ | |
c1caf06c | 540 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, |
1f32ca31 | 541 | unsigned int option_flags, |
9dd78466 | 542 | int size) |
1da177e4 LT |
543 | { |
544 | unsigned char tmp[9]; | |
c227536b BH |
545 | resource_size_t base, len; |
546 | unsigned char flags; | |
1da177e4 LT |
547 | |
548 | isapnp_peek(tmp, size); | |
c227536b BH |
549 | base = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
550 | len = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
551 | flags = tmp[0]; | |
1f32ca31 | 552 | pnp_register_mem_resource(dev, option_flags, base, base, 0, len, flags); |
1da177e4 LT |
553 | } |
554 | ||
555 | /* | |
556 | * Parse card name for ISA PnP device. | |
9dd78466 | 557 | */ |
1da177e4 LT |
558 | static void __init |
559 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) | |
560 | { | |
561 | if (name[0] == '\0') { | |
9dd78466 BH |
562 | unsigned short size1 = |
563 | *size >= name_max ? (name_max - 1) : *size; | |
1da177e4 LT |
564 | isapnp_peek(name, size1); |
565 | name[size1] = '\0'; | |
566 | *size -= size1; | |
567 | ||
568 | /* clean whitespace from end of string */ | |
9dd78466 | 569 | while (size1 > 0 && name[--size1] == ' ') |
1da177e4 LT |
570 | name[size1] = '\0'; |
571 | } | |
572 | } | |
573 | ||
574 | /* | |
575 | * Parse resource map for logical device. | |
576 | */ | |
1da177e4 LT |
577 | static int __init isapnp_create_device(struct pnp_card *card, |
578 | unsigned short size) | |
579 | { | |
e2a1a6f1 | 580 | int number = 0, skip = 0, priority, compat = 0; |
1da177e4 | 581 | unsigned char type, tmp[17]; |
1f32ca31 | 582 | unsigned int option_flags; |
1da177e4 | 583 | struct pnp_dev *dev; |
25eb8461 BH |
584 | u32 eisa_id; |
585 | char id[8]; | |
07d4e9af | 586 | |
1da177e4 LT |
587 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
588 | return 1; | |
1f32ca31 | 589 | option_flags = 0; |
9dd78466 | 590 | pnp_add_card_device(card, dev); |
1da177e4 LT |
591 | |
592 | while (1) { | |
9dd78466 | 593 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
594 | return 1; |
595 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) | |
596 | goto __skip; | |
597 | switch (type) { | |
598 | case _STAG_LOGDEVID: | |
599 | if (size >= 5 && size <= 6) { | |
9dd78466 BH |
600 | if ((dev = |
601 | isapnp_parse_device(card, size, | |
602 | number++)) == NULL) | |
1da177e4 LT |
603 | return 1; |
604 | size = 0; | |
605 | skip = 0; | |
1f32ca31 | 606 | option_flags = 0; |
9dd78466 | 607 | pnp_add_card_device(card, dev); |
1da177e4 LT |
608 | } else { |
609 | skip = 1; | |
610 | } | |
1da177e4 LT |
611 | compat = 0; |
612 | break; | |
613 | case _STAG_COMPATDEVID: | |
614 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { | |
615 | isapnp_peek(tmp, 4); | |
25eb8461 BH |
616 | eisa_id = tmp[0] | tmp[1] << 8 | |
617 | tmp[2] << 16 | tmp[3] << 24; | |
618 | pnp_eisa_id_to_string(eisa_id, id); | |
619 | pnp_add_id(dev, id); | |
1da177e4 LT |
620 | compat++; |
621 | size = 0; | |
622 | } | |
623 | break; | |
624 | case _STAG_IRQ: | |
625 | if (size < 2 || size > 3) | |
626 | goto __skip; | |
1f32ca31 | 627 | isapnp_parse_irq_resource(dev, option_flags, size); |
1da177e4 LT |
628 | size = 0; |
629 | break; | |
630 | case _STAG_DMA: | |
631 | if (size != 2) | |
632 | goto __skip; | |
1f32ca31 | 633 | isapnp_parse_dma_resource(dev, option_flags, size); |
1da177e4 LT |
634 | size = 0; |
635 | break; | |
636 | case _STAG_STARTDEP: | |
637 | if (size > 1) | |
638 | goto __skip; | |
e2a1a6f1 | 639 | priority = PNP_RES_PRIORITY_ACCEPTABLE; |
1da177e4 LT |
640 | if (size > 0) { |
641 | isapnp_peek(tmp, size); | |
e2a1a6f1 | 642 | priority = tmp[0]; |
1da177e4 LT |
643 | size = 0; |
644 | } | |
1f32ca31 | 645 | option_flags = pnp_new_dependent_set(dev, priority); |
1da177e4 LT |
646 | break; |
647 | case _STAG_ENDDEP: | |
648 | if (size != 0) | |
649 | goto __skip; | |
1f32ca31 | 650 | option_flags = 0; |
1da177e4 LT |
651 | break; |
652 | case _STAG_IOPORT: | |
653 | if (size != 7) | |
654 | goto __skip; | |
1f32ca31 | 655 | isapnp_parse_port_resource(dev, option_flags, size); |
1da177e4 LT |
656 | size = 0; |
657 | break; | |
658 | case _STAG_FIXEDIO: | |
659 | if (size != 3) | |
660 | goto __skip; | |
1f32ca31 BH |
661 | isapnp_parse_fixed_port_resource(dev, option_flags, |
662 | size); | |
1da177e4 LT |
663 | size = 0; |
664 | break; | |
665 | case _STAG_VENDOR: | |
666 | break; | |
667 | case _LTAG_MEMRANGE: | |
668 | if (size != 9) | |
669 | goto __skip; | |
1f32ca31 | 670 | isapnp_parse_mem_resource(dev, option_flags, size); |
1da177e4 LT |
671 | size = 0; |
672 | break; | |
673 | case _LTAG_ANSISTR: | |
674 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); | |
675 | break; | |
676 | case _LTAG_UNICODESTR: | |
677 | /* silently ignore */ | |
678 | /* who use unicode for hardware identification? */ | |
679 | break; | |
680 | case _LTAG_VENDOR: | |
681 | break; | |
682 | case _LTAG_MEM32RANGE: | |
683 | if (size != 17) | |
684 | goto __skip; | |
1f32ca31 | 685 | isapnp_parse_mem32_resource(dev, option_flags, size); |
1da177e4 LT |
686 | size = 0; |
687 | break; | |
688 | case _LTAG_FIXEDMEM32RANGE: | |
689 | if (size != 9) | |
690 | goto __skip; | |
1f32ca31 BH |
691 | isapnp_parse_fixed_mem32_resource(dev, option_flags, |
692 | size); | |
1da177e4 LT |
693 | size = 0; |
694 | break; | |
695 | case _STAG_END: | |
696 | if (size > 0) | |
697 | isapnp_skip_bytes(size); | |
698 | return 1; | |
699 | default: | |
af11cb2d BH |
700 | dev_err(&dev->dev, "unknown tag %#x (card %i), " |
701 | "ignored\n", type, card->number); | |
1da177e4 | 702 | } |
1e0aa9ad | 703 | __skip: |
9dd78466 BH |
704 | if (size > 0) |
705 | isapnp_skip_bytes(size); | |
1da177e4 LT |
706 | } |
707 | return 0; | |
708 | } | |
709 | ||
710 | /* | |
711 | * Parse resource map for ISA PnP card. | |
712 | */ | |
1da177e4 LT |
713 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
714 | { | |
715 | unsigned char type, tmp[17]; | |
716 | unsigned short size; | |
717 | ||
718 | while (1) { | |
9dd78466 | 719 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
720 | return; |
721 | switch (type) { | |
722 | case _STAG_PNPVERNO: | |
723 | if (size != 2) | |
724 | goto __skip; | |
725 | isapnp_peek(tmp, 2); | |
726 | card->pnpver = tmp[0]; | |
727 | card->productver = tmp[1]; | |
728 | size = 0; | |
729 | break; | |
730 | case _STAG_LOGDEVID: | |
731 | if (size >= 5 && size <= 6) { | |
9dd78466 | 732 | if (isapnp_create_device(card, size) == 1) |
1da177e4 LT |
733 | return; |
734 | size = 0; | |
735 | } | |
736 | break; | |
737 | case _STAG_VENDOR: | |
738 | break; | |
739 | case _LTAG_ANSISTR: | |
9dd78466 BH |
740 | isapnp_parse_name(card->name, sizeof(card->name), |
741 | &size); | |
1da177e4 LT |
742 | break; |
743 | case _LTAG_UNICODESTR: | |
744 | /* silently ignore */ | |
745 | /* who use unicode for hardware identification? */ | |
746 | break; | |
747 | case _LTAG_VENDOR: | |
748 | break; | |
749 | case _STAG_END: | |
750 | if (size > 0) | |
751 | isapnp_skip_bytes(size); | |
752 | return; | |
753 | default: | |
af11cb2d BH |
754 | dev_err(&card->dev, "unknown tag %#x, ignored\n", |
755 | type); | |
1da177e4 | 756 | } |
1e0aa9ad | 757 | __skip: |
9dd78466 BH |
758 | if (size > 0) |
759 | isapnp_skip_bytes(size); | |
1da177e4 LT |
760 | } |
761 | } | |
762 | ||
763 | /* | |
764 | * Compute ISA PnP checksum for first eight bytes. | |
765 | */ | |
1da177e4 LT |
766 | static unsigned char __init isapnp_checksum(unsigned char *data) |
767 | { | |
768 | int i, j; | |
769 | unsigned char checksum = 0x6a, bit, b; | |
770 | ||
771 | for (i = 0; i < 8; i++) { | |
772 | b = data[i]; | |
773 | for (j = 0; j < 8; j++) { | |
774 | bit = 0; | |
775 | if (b & (1 << j)) | |
776 | bit = 1; | |
9dd78466 BH |
777 | checksum = |
778 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
779 | | (checksum >> 1); | |
1da177e4 LT |
780 | } |
781 | } | |
782 | return checksum; | |
783 | } | |
784 | ||
1da177e4 LT |
785 | /* |
786 | * Build device list for all present ISA PnP devices. | |
787 | */ | |
1da177e4 LT |
788 | static int __init isapnp_build_device_list(void) |
789 | { | |
790 | int csn; | |
791 | unsigned char header[9], checksum; | |
792 | struct pnp_card *card; | |
068076d5 BH |
793 | u32 eisa_id; |
794 | char id[8]; | |
1da177e4 LT |
795 | |
796 | isapnp_wait(); | |
797 | isapnp_key(); | |
798 | for (csn = 1; csn <= isapnp_csn_count; csn++) { | |
799 | isapnp_wake(csn); | |
800 | isapnp_peek(header, 9); | |
801 | checksum = isapnp_checksum(header); | |
068076d5 BH |
802 | eisa_id = header[0] | header[1] << 8 | |
803 | header[2] << 16 | header[3] << 24; | |
804 | pnp_eisa_id_to_string(eisa_id, id); | |
6bf2aab2 BH |
805 | card = pnp_alloc_card(&isapnp_protocol, csn, id); |
806 | if (!card) | |
807 | continue; | |
808 | ||
809 | INIT_LIST_HEAD(&card->devices); | |
9dd78466 BH |
810 | card->serial = |
811 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | | |
812 | header[4]; | |
1da177e4 LT |
813 | isapnp_checksum_value = 0x00; |
814 | isapnp_parse_resource_map(card); | |
815 | if (isapnp_checksum_value != 0x00) | |
af11cb2d BH |
816 | dev_err(&card->dev, "invalid checksum %#x\n", |
817 | isapnp_checksum_value); | |
1da177e4 | 818 | card->checksum = isapnp_checksum_value; |
1da177e4 LT |
819 | |
820 | pnp_add_card(card); | |
821 | } | |
822 | isapnp_wait(); | |
823 | return 0; | |
824 | } | |
825 | ||
826 | /* | |
827 | * Basic configuration routines. | |
828 | */ | |
829 | ||
830 | int isapnp_present(void) | |
831 | { | |
832 | struct pnp_card *card; | |
07d4e9af | 833 | |
1da177e4 LT |
834 | pnp_for_each_card(card) { |
835 | if (card->protocol == &isapnp_protocol) | |
836 | return 1; | |
837 | } | |
838 | return 0; | |
839 | } | |
840 | ||
841 | int isapnp_cfg_begin(int csn, int logdev) | |
842 | { | |
843 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) | |
844 | return -EINVAL; | |
14cc3e2b | 845 | mutex_lock(&isapnp_cfg_mutex); |
1da177e4 LT |
846 | isapnp_wait(); |
847 | isapnp_key(); | |
848 | isapnp_wake(csn); | |
849 | #if 0 | |
850 | /* to avoid malfunction when the isapnptools package is used */ | |
851 | /* we must set RDP to our value again */ | |
852 | /* it is possible to set RDP only in the isolation phase */ | |
853 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ | |
854 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ | |
9dd78466 BH |
855 | mdelay(2); /* is this necessary? */ |
856 | isapnp_wake(csn); /* bring card into sleep state */ | |
857 | isapnp_wake(0); /* bring card into isolation state */ | |
858 | isapnp_set_rdp(); /* reset the RDP port */ | |
859 | udelay(1000); /* delay 1000us */ | |
1da177e4 | 860 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
9dd78466 | 861 | udelay(250); /* is this necessary? */ |
1da177e4 LT |
862 | #endif |
863 | if (logdev >= 0) | |
864 | isapnp_device(logdev); | |
865 | return 0; | |
866 | } | |
867 | ||
868 | int isapnp_cfg_end(void) | |
869 | { | |
870 | isapnp_wait(); | |
14cc3e2b | 871 | mutex_unlock(&isapnp_cfg_mutex); |
1da177e4 LT |
872 | return 0; |
873 | } | |
874 | ||
1da177e4 | 875 | /* |
07d4e9af | 876 | * Initialization. |
1da177e4 LT |
877 | */ |
878 | ||
1da177e4 LT |
879 | EXPORT_SYMBOL(isapnp_protocol); |
880 | EXPORT_SYMBOL(isapnp_present); | |
881 | EXPORT_SYMBOL(isapnp_cfg_begin); | |
882 | EXPORT_SYMBOL(isapnp_cfg_end); | |
1da177e4 LT |
883 | EXPORT_SYMBOL(isapnp_write_byte); |
884 | ||
01115e7d | 885 | static int isapnp_get_resources(struct pnp_dev *dev) |
1da177e4 | 886 | { |
01115e7d | 887 | int i, ret; |
1da177e4 | 888 | |
2f53432c | 889 | pnp_dbg(&dev->dev, "get resources\n"); |
01115e7d BH |
890 | pnp_init_resources(dev); |
891 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1da177e4 | 892 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); |
01115e7d BH |
893 | if (!dev->active) |
894 | goto __end; | |
895 | ||
896 | for (i = 0; i < ISAPNP_MAX_PORT; i++) { | |
897 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1)); | |
87e4acf3 BH |
898 | pnp_add_io_resource(dev, ret, ret, |
899 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
900 | } |
901 | for (i = 0; i < ISAPNP_MAX_MEM; i++) { | |
902 | ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8; | |
87e4acf3 BH |
903 | pnp_add_mem_resource(dev, ret, ret, |
904 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
905 | } |
906 | for (i = 0; i < ISAPNP_MAX_IRQ; i++) { | |
907 | ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8; | |
87e4acf3 BH |
908 | pnp_add_irq_resource(dev, ret, |
909 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
910 | } |
911 | for (i = 0; i < ISAPNP_MAX_DMA; i++) { | |
912 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + i); | |
87e4acf3 BH |
913 | pnp_add_dma_resource(dev, ret, |
914 | ret == 4 ? IORESOURCE_DISABLED : 0); | |
1da177e4 | 915 | } |
1e0aa9ad | 916 | |
01115e7d | 917 | __end: |
1da177e4 | 918 | isapnp_cfg_end(); |
01115e7d | 919 | return 0; |
1da177e4 LT |
920 | } |
921 | ||
59284cb4 | 922 | static int isapnp_set_resources(struct pnp_dev *dev) |
1da177e4 | 923 | { |
06cb58a6 | 924 | struct resource *res; |
87e4acf3 | 925 | int tmp; |
1da177e4 | 926 | |
2f53432c | 927 | pnp_dbg(&dev->dev, "set resources\n"); |
1da177e4 LT |
928 | isapnp_cfg_begin(dev->card->number, dev->number); |
929 | dev->active = 1; | |
06cb58a6 | 930 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
87e4acf3 | 931 | res = pnp_get_resource(dev, IORESOURCE_IO, tmp); |
aee3ad81 | 932 | if (pnp_resource_enabled(res)) { |
2f53432c | 933 | pnp_dbg(&dev->dev, " set io %d to %#llx\n", |
87e4acf3 BH |
934 | tmp, (unsigned long long) res->start); |
935 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), | |
06cb58a6 BH |
936 | res->start); |
937 | } | |
72dcc883 | 938 | } |
06cb58a6 | 939 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
87e4acf3 | 940 | res = pnp_get_resource(dev, IORESOURCE_IRQ, tmp); |
aee3ad81 | 941 | if (pnp_resource_enabled(res)) { |
06cb58a6 BH |
942 | int irq = res->start; |
943 | if (irq == 2) | |
944 | irq = 9; | |
2f53432c | 945 | pnp_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); |
87e4acf3 | 946 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); |
06cb58a6 | 947 | } |
1da177e4 | 948 | } |
06cb58a6 | 949 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
87e4acf3 | 950 | res = pnp_get_resource(dev, IORESOURCE_DMA, tmp); |
aee3ad81 | 951 | if (pnp_resource_enabled(res)) { |
2f53432c | 952 | pnp_dbg(&dev->dev, " set dma %d to %lld\n", |
87e4acf3 BH |
953 | tmp, (unsigned long long) res->start); |
954 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, res->start); | |
06cb58a6 | 955 | } |
72dcc883 | 956 | } |
06cb58a6 | 957 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
87e4acf3 | 958 | res = pnp_get_resource(dev, IORESOURCE_MEM, tmp); |
aee3ad81 | 959 | if (pnp_resource_enabled(res)) { |
2f53432c | 960 | pnp_dbg(&dev->dev, " set mem %d to %#llx\n", |
87e4acf3 BH |
961 | tmp, (unsigned long long) res->start); |
962 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), | |
06cb58a6 BH |
963 | (res->start >> 8) & 0xffff); |
964 | } | |
72dcc883 | 965 | } |
1da177e4 LT |
966 | /* FIXME: We aren't handling 32bit mems properly here */ |
967 | isapnp_activate(dev->number); | |
968 | isapnp_cfg_end(); | |
969 | return 0; | |
970 | } | |
971 | ||
972 | static int isapnp_disable_resources(struct pnp_dev *dev) | |
973 | { | |
b1734913 | 974 | if (!dev->active) |
1da177e4 LT |
975 | return -EINVAL; |
976 | isapnp_cfg_begin(dev->card->number, dev->number); | |
977 | isapnp_deactivate(dev->number); | |
978 | dev->active = 0; | |
979 | isapnp_cfg_end(); | |
980 | return 0; | |
981 | } | |
982 | ||
983 | struct pnp_protocol isapnp_protocol = { | |
9dd78466 BH |
984 | .name = "ISA Plug and Play", |
985 | .get = isapnp_get_resources, | |
986 | .set = isapnp_set_resources, | |
1da177e4 LT |
987 | .disable = isapnp_disable_resources, |
988 | }; | |
989 | ||
990 | static int __init isapnp_init(void) | |
991 | { | |
992 | int cards; | |
993 | struct pnp_card *card; | |
994 | struct pnp_dev *dev; | |
995 | ||
996 | if (isapnp_disable) { | |
1da177e4 LT |
997 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
998 | return 0; | |
999 | } | |
68e1ee62 | 1000 | #ifdef CONFIG_PPC |
07bd1c4a DW |
1001 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) |
1002 | return -EINVAL; | |
1003 | #endif | |
1da177e4 LT |
1004 | #ifdef ISAPNP_REGION_OK |
1005 | if (!request_region(_PIDXR, 1, "isapnp index")) { | |
9dd78466 BH |
1006 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
1007 | _PIDXR); | |
1da177e4 LT |
1008 | return -EBUSY; |
1009 | } | |
1010 | #endif | |
1011 | if (!request_region(_PNPWRP, 1, "isapnp write")) { | |
9dd78466 BH |
1012 | printk(KERN_ERR |
1013 | "isapnp: Write Data Register 0x%x already used\n", | |
1014 | _PNPWRP); | |
1da177e4 LT |
1015 | #ifdef ISAPNP_REGION_OK |
1016 | release_region(_PIDXR, 1); | |
1017 | #endif | |
1018 | return -EBUSY; | |
1019 | } | |
1020 | ||
9dd78466 | 1021 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
1da177e4 LT |
1022 | return -EBUSY; |
1023 | ||
1024 | /* | |
9dd78466 BH |
1025 | * Print a message. The existing ISAPnP code is hanging machines |
1026 | * so let the user know where. | |
1da177e4 | 1027 | */ |
9dd78466 | 1028 | |
1da177e4 LT |
1029 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
1030 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { | |
1031 | isapnp_rdp |= 3; | |
1032 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { | |
9dd78466 BH |
1033 | printk(KERN_ERR |
1034 | "isapnp: Read Data Register 0x%x already used\n", | |
1035 | isapnp_rdp); | |
1da177e4 LT |
1036 | #ifdef ISAPNP_REGION_OK |
1037 | release_region(_PIDXR, 1); | |
1038 | #endif | |
1039 | release_region(_PNPWRP, 1); | |
1040 | return -EBUSY; | |
1041 | } | |
1042 | isapnp_set_rdp(); | |
1043 | } | |
1da177e4 LT |
1044 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
1045 | cards = isapnp_isolate(); | |
9dd78466 | 1046 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
1da177e4 LT |
1047 | #ifdef ISAPNP_REGION_OK |
1048 | release_region(_PIDXR, 1); | |
1049 | #endif | |
1050 | release_region(_PNPWRP, 1); | |
9dd78466 BH |
1051 | printk(KERN_INFO |
1052 | "isapnp: No Plug & Play device found\n"); | |
1da177e4 LT |
1053 | return 0; |
1054 | } | |
1055 | request_region(isapnp_rdp, 1, "isapnp read"); | |
1056 | } | |
1057 | isapnp_build_device_list(); | |
1058 | cards = 0; | |
1059 | ||
9dd78466 | 1060 | protocol_for_each_card(&isapnp_protocol, card) { |
1da177e4 LT |
1061 | cards++; |
1062 | if (isapnp_verbose) { | |
af11cb2d BH |
1063 | dev_info(&card->dev, "card '%s'\n", |
1064 | card->name[0] ? card->name : "unknown"); | |
1da177e4 LT |
1065 | if (isapnp_verbose < 2) |
1066 | continue; | |
9dd78466 | 1067 | card_for_each_dev(card, dev) { |
af11cb2d BH |
1068 | dev_info(&card->dev, "device '%s'\n", |
1069 | dev->name[0] ? dev->name : "unknown"); | |
1da177e4 LT |
1070 | } |
1071 | } | |
1072 | } | |
1e0aa9ad | 1073 | if (cards) |
9dd78466 BH |
1074 | printk(KERN_INFO |
1075 | "isapnp: %i Plug & Play card%s detected total\n", cards, | |
1076 | cards > 1 ? "s" : ""); | |
1e0aa9ad | 1077 | else |
1da177e4 | 1078 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
1da177e4 LT |
1079 | |
1080 | isapnp_proc_init(); | |
1081 | return 0; | |
1082 | } | |
1083 | ||
1084 | device_initcall(isapnp_init); | |
1085 | ||
1086 | /* format is: noisapnp */ | |
1087 | ||
1088 | static int __init isapnp_setup_disable(char *str) | |
1089 | { | |
1090 | isapnp_disable = 1; | |
1091 | return 1; | |
1092 | } | |
1093 | ||
1094 | __setup("noisapnp", isapnp_setup_disable); | |
1095 | ||
1096 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ | |
1097 | ||
1098 | static int __init isapnp_setup_isapnp(char *str) | |
1099 | { | |
9dd78466 BH |
1100 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
1101 | (get_option(&str, &isapnp_reset) == 2) && | |
1102 | (get_option(&str, &isapnp_verbose) == 2)); | |
1da177e4 LT |
1103 | return 1; |
1104 | } | |
1105 | ||
1106 | __setup("isapnp=", isapnp_setup_isapnp); |