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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> | |
40 | #include <linux/slab.h> | |
41 | #include <linux/delay.h> | |
42 | #include <linux/init.h> | |
43 | #include <linux/isapnp.h> | |
14cc3e2b | 44 | #include <linux/mutex.h> |
1da177e4 LT |
45 | #include <asm/io.h> |
46 | ||
772defc6 BH |
47 | #include "../base.h" |
48 | ||
1da177e4 LT |
49 | #if 0 |
50 | #define ISAPNP_REGION_OK | |
51 | #endif | |
1da177e4 | 52 | |
9dd78466 BH |
53 | int isapnp_disable; /* Disable ISA PnP */ |
54 | static int isapnp_rdp; /* Read Data Port */ | |
55 | static int isapnp_reset = 1; /* reset all PnP cards (deactivate) */ | |
56 | static int isapnp_verbose = 1; /* verbose mode */ | |
1da177e4 | 57 | |
c1017a4c | 58 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
1da177e4 LT |
59 | MODULE_DESCRIPTION("Generic ISA Plug & Play support"); |
60 | module_param(isapnp_disable, int, 0); | |
61 | MODULE_PARM_DESC(isapnp_disable, "ISA Plug & Play disable"); | |
62 | module_param(isapnp_rdp, int, 0); | |
63 | MODULE_PARM_DESC(isapnp_rdp, "ISA Plug & Play read data port"); | |
64 | module_param(isapnp_reset, int, 0); | |
65 | MODULE_PARM_DESC(isapnp_reset, "ISA Plug & Play reset all cards"); | |
66 | module_param(isapnp_verbose, int, 0); | |
67 | MODULE_PARM_DESC(isapnp_verbose, "ISA Plug & Play verbose mode"); | |
68 | MODULE_LICENSE("GPL"); | |
69 | ||
70 | #define _PIDXR 0x279 | |
71 | #define _PNPWRP 0xa79 | |
72 | ||
73 | /* short tags */ | |
74 | #define _STAG_PNPVERNO 0x01 | |
75 | #define _STAG_LOGDEVID 0x02 | |
76 | #define _STAG_COMPATDEVID 0x03 | |
77 | #define _STAG_IRQ 0x04 | |
78 | #define _STAG_DMA 0x05 | |
79 | #define _STAG_STARTDEP 0x06 | |
80 | #define _STAG_ENDDEP 0x07 | |
81 | #define _STAG_IOPORT 0x08 | |
82 | #define _STAG_FIXEDIO 0x09 | |
83 | #define _STAG_VENDOR 0x0e | |
84 | #define _STAG_END 0x0f | |
85 | /* long tags */ | |
86 | #define _LTAG_MEMRANGE 0x81 | |
87 | #define _LTAG_ANSISTR 0x82 | |
88 | #define _LTAG_UNICODESTR 0x83 | |
89 | #define _LTAG_VENDOR 0x84 | |
90 | #define _LTAG_MEM32RANGE 0x85 | |
91 | #define _LTAG_FIXEDMEM32RANGE 0x86 | |
92 | ||
ca0e8b6f BH |
93 | /* Logical device control and configuration registers */ |
94 | ||
95 | #define ISAPNP_CFG_ACTIVATE 0x30 /* byte */ | |
96 | #define ISAPNP_CFG_MEM 0x40 /* 4 * dword */ | |
97 | #define ISAPNP_CFG_PORT 0x60 /* 8 * word */ | |
98 | #define ISAPNP_CFG_IRQ 0x70 /* 2 * word */ | |
99 | #define ISAPNP_CFG_DMA 0x74 /* 2 * byte */ | |
100 | ||
245073f0 BH |
101 | /* |
102 | * Sizes of ISAPNP logical device configuration register sets. | |
103 | * See PNP-ISA-v1.0a.pdf, Appendix A. | |
104 | */ | |
105 | #define ISAPNP_MAX_MEM 4 | |
106 | #define ISAPNP_MAX_PORT 8 | |
107 | #define ISAPNP_MAX_IRQ 2 | |
108 | #define ISAPNP_MAX_DMA 2 | |
109 | ||
1da177e4 | 110 | static unsigned char isapnp_checksum_value; |
14cc3e2b | 111 | static DEFINE_MUTEX(isapnp_cfg_mutex); |
1da177e4 LT |
112 | static int isapnp_csn_count; |
113 | ||
114 | /* some prototypes */ | |
115 | ||
116 | static inline void write_data(unsigned char x) | |
117 | { | |
118 | outb(x, _PNPWRP); | |
119 | } | |
120 | ||
121 | static inline void write_address(unsigned char x) | |
122 | { | |
123 | outb(x, _PIDXR); | |
124 | udelay(20); | |
125 | } | |
126 | ||
127 | static inline unsigned char read_data(void) | |
128 | { | |
129 | unsigned char val = inb(isapnp_rdp); | |
130 | return val; | |
131 | } | |
132 | ||
133 | unsigned char isapnp_read_byte(unsigned char idx) | |
134 | { | |
135 | write_address(idx); | |
136 | return read_data(); | |
137 | } | |
138 | ||
139 | static unsigned short isapnp_read_word(unsigned char idx) | |
140 | { | |
141 | unsigned short val; | |
142 | ||
143 | val = isapnp_read_byte(idx); | |
9dd78466 | 144 | val = (val << 8) + isapnp_read_byte(idx + 1); |
1da177e4 LT |
145 | return val; |
146 | } | |
147 | ||
148 | void isapnp_write_byte(unsigned char idx, unsigned char val) | |
149 | { | |
150 | write_address(idx); | |
151 | write_data(val); | |
152 | } | |
153 | ||
154 | static void isapnp_write_word(unsigned char idx, unsigned short val) | |
155 | { | |
156 | isapnp_write_byte(idx, val >> 8); | |
9dd78466 | 157 | isapnp_write_byte(idx + 1, val); |
1da177e4 LT |
158 | } |
159 | ||
1da177e4 LT |
160 | static void isapnp_key(void) |
161 | { | |
162 | unsigned char code = 0x6a, msb; | |
163 | int i; | |
164 | ||
165 | mdelay(1); | |
166 | write_address(0x00); | |
167 | write_address(0x00); | |
168 | ||
169 | write_address(code); | |
170 | ||
171 | for (i = 1; i < 32; i++) { | |
172 | msb = ((code & 0x01) ^ ((code & 0x02) >> 1)) << 7; | |
173 | code = (code >> 1) | msb; | |
174 | write_address(code); | |
175 | } | |
176 | } | |
177 | ||
178 | /* place all pnp cards in wait-for-key state */ | |
179 | static void isapnp_wait(void) | |
180 | { | |
181 | isapnp_write_byte(0x02, 0x02); | |
182 | } | |
183 | ||
184 | static void isapnp_wake(unsigned char csn) | |
185 | { | |
186 | isapnp_write_byte(0x03, csn); | |
187 | } | |
188 | ||
189 | static void isapnp_device(unsigned char logdev) | |
190 | { | |
191 | isapnp_write_byte(0x07, logdev); | |
192 | } | |
193 | ||
194 | static void isapnp_activate(unsigned char logdev) | |
195 | { | |
196 | isapnp_device(logdev); | |
197 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 1); | |
198 | udelay(250); | |
199 | } | |
200 | ||
201 | static void isapnp_deactivate(unsigned char logdev) | |
202 | { | |
203 | isapnp_device(logdev); | |
204 | isapnp_write_byte(ISAPNP_CFG_ACTIVATE, 0); | |
205 | udelay(500); | |
206 | } | |
207 | ||
208 | static void __init isapnp_peek(unsigned char *data, int bytes) | |
209 | { | |
210 | int i, j; | |
9dd78466 | 211 | unsigned char d = 0; |
1da177e4 LT |
212 | |
213 | for (i = 1; i <= bytes; i++) { | |
214 | for (j = 0; j < 20; j++) { | |
215 | d = isapnp_read_byte(0x05); | |
216 | if (d & 1) | |
217 | break; | |
218 | udelay(100); | |
219 | } | |
220 | if (!(d & 1)) { | |
221 | if (data != NULL) | |
222 | *data++ = 0xff; | |
223 | continue; | |
224 | } | |
225 | d = isapnp_read_byte(0x04); /* PRESDI */ | |
226 | isapnp_checksum_value += d; | |
227 | if (data != NULL) | |
228 | *data++ = d; | |
229 | } | |
230 | } | |
231 | ||
232 | #define RDP_STEP 32 /* minimum is 4 */ | |
233 | ||
234 | static int isapnp_next_rdp(void) | |
235 | { | |
236 | int rdp = isapnp_rdp; | |
237 | static int old_rdp = 0; | |
9dd78466 BH |
238 | |
239 | if (old_rdp) { | |
1da177e4 LT |
240 | release_region(old_rdp, 1); |
241 | old_rdp = 0; | |
242 | } | |
243 | while (rdp <= 0x3ff) { | |
244 | /* | |
9dd78466 BH |
245 | * We cannot use NE2000 probe spaces for ISAPnP or we |
246 | * will lock up machines. | |
1da177e4 | 247 | */ |
9dd78466 BH |
248 | if ((rdp < 0x280 || rdp > 0x380) |
249 | && request_region(rdp, 1, "ISAPnP")) { | |
1da177e4 LT |
250 | isapnp_rdp = rdp; |
251 | old_rdp = rdp; | |
252 | return 0; | |
253 | } | |
254 | rdp += RDP_STEP; | |
255 | } | |
256 | return -1; | |
257 | } | |
258 | ||
259 | /* Set read port address */ | |
260 | static inline void isapnp_set_rdp(void) | |
261 | { | |
262 | isapnp_write_byte(0x00, isapnp_rdp >> 2); | |
263 | udelay(100); | |
264 | } | |
265 | ||
266 | /* | |
267 | * Perform an isolation. The port selection code now tries to avoid | |
268 | * "dangerous to read" ports. | |
269 | */ | |
1da177e4 LT |
270 | static int __init isapnp_isolate_rdp_select(void) |
271 | { | |
272 | isapnp_wait(); | |
273 | isapnp_key(); | |
274 | ||
275 | /* Control: reset CSN and conditionally everything else too */ | |
276 | isapnp_write_byte(0x02, isapnp_reset ? 0x05 : 0x04); | |
277 | mdelay(2); | |
278 | ||
279 | isapnp_wait(); | |
280 | isapnp_key(); | |
281 | isapnp_wake(0x00); | |
282 | ||
283 | if (isapnp_next_rdp() < 0) { | |
284 | isapnp_wait(); | |
285 | return -1; | |
286 | } | |
287 | ||
288 | isapnp_set_rdp(); | |
289 | udelay(1000); | |
290 | write_address(0x01); | |
291 | udelay(1000); | |
292 | return 0; | |
293 | } | |
294 | ||
295 | /* | |
296 | * Isolate (assign uniqued CSN) to all ISA PnP devices. | |
297 | */ | |
1da177e4 LT |
298 | static int __init isapnp_isolate(void) |
299 | { | |
300 | unsigned char checksum = 0x6a; | |
301 | unsigned char chksum = 0x00; | |
302 | unsigned char bit = 0x00; | |
303 | int data; | |
304 | int csn = 0; | |
305 | int i; | |
306 | int iteration = 1; | |
307 | ||
308 | isapnp_rdp = 0x213; | |
309 | if (isapnp_isolate_rdp_select() < 0) | |
310 | return -1; | |
311 | ||
312 | while (1) { | |
313 | for (i = 1; i <= 64; i++) { | |
314 | data = read_data() << 8; | |
315 | udelay(250); | |
316 | data = data | read_data(); | |
317 | udelay(250); | |
318 | if (data == 0x55aa) | |
319 | bit = 0x01; | |
9dd78466 BH |
320 | checksum = |
321 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
322 | | (checksum >> 1); | |
1da177e4 LT |
323 | bit = 0x00; |
324 | } | |
325 | for (i = 65; i <= 72; i++) { | |
326 | data = read_data() << 8; | |
327 | udelay(250); | |
328 | data = data | read_data(); | |
329 | udelay(250); | |
330 | if (data == 0x55aa) | |
331 | chksum |= (1 << (i - 65)); | |
332 | } | |
333 | if (checksum != 0x00 && checksum == chksum) { | |
334 | csn++; | |
335 | ||
336 | isapnp_write_byte(0x06, csn); | |
337 | udelay(250); | |
338 | iteration++; | |
339 | isapnp_wake(0x00); | |
340 | isapnp_set_rdp(); | |
341 | udelay(1000); | |
342 | write_address(0x01); | |
343 | udelay(1000); | |
344 | goto __next; | |
345 | } | |
346 | if (iteration == 1) { | |
347 | isapnp_rdp += RDP_STEP; | |
348 | if (isapnp_isolate_rdp_select() < 0) | |
349 | return -1; | |
350 | } else if (iteration > 1) { | |
351 | break; | |
352 | } | |
1e0aa9ad | 353 | __next: |
1da177e4 LT |
354 | if (csn == 255) |
355 | break; | |
356 | checksum = 0x6a; | |
357 | chksum = 0x00; | |
358 | bit = 0x00; | |
359 | } | |
360 | isapnp_wait(); | |
361 | isapnp_csn_count = csn; | |
362 | return csn; | |
363 | } | |
364 | ||
365 | /* | |
366 | * Read one tag from stream. | |
367 | */ | |
1da177e4 LT |
368 | static int __init isapnp_read_tag(unsigned char *type, unsigned short *size) |
369 | { | |
370 | unsigned char tag, tmp[2]; | |
371 | ||
372 | isapnp_peek(&tag, 1); | |
9dd78466 | 373 | if (tag == 0) /* invalid tag */ |
1da177e4 LT |
374 | return -1; |
375 | if (tag & 0x80) { /* large item */ | |
376 | *type = tag; | |
377 | isapnp_peek(tmp, 2); | |
378 | *size = (tmp[1] << 8) | tmp[0]; | |
379 | } else { | |
380 | *type = (tag >> 3) & 0x0f; | |
381 | *size = tag & 0x07; | |
382 | } | |
383 | #if 0 | |
9dd78466 BH |
384 | printk(KERN_DEBUG "tag = 0x%x, type = 0x%x, size = %i\n", tag, *type, |
385 | *size); | |
1da177e4 | 386 | #endif |
1da177e4 LT |
387 | if (*type == 0xff && *size == 0xffff) /* probably invalid data */ |
388 | return -1; | |
389 | return 0; | |
390 | } | |
391 | ||
392 | /* | |
393 | * Skip specified number of bytes from stream. | |
394 | */ | |
1da177e4 LT |
395 | static void __init isapnp_skip_bytes(int count) |
396 | { | |
397 | isapnp_peek(NULL, count); | |
398 | } | |
399 | ||
1da177e4 LT |
400 | /* |
401 | * Parse logical device tag. | |
402 | */ | |
9dd78466 BH |
403 | static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, |
404 | int size, int number) | |
1da177e4 LT |
405 | { |
406 | unsigned char tmp[6]; | |
407 | struct pnp_dev *dev; | |
25eb8461 BH |
408 | u32 eisa_id; |
409 | char id[8]; | |
1da177e4 LT |
410 | |
411 | isapnp_peek(tmp, size); | |
25eb8461 BH |
412 | eisa_id = tmp[0] | tmp[1] << 8 | tmp[2] << 16 | tmp[3] << 24; |
413 | pnp_eisa_id_to_string(eisa_id, id); | |
bda1e4e5 BH |
414 | |
415 | dev = pnp_alloc_dev(&isapnp_protocol, number, id); | |
416 | if (!dev) | |
417 | return NULL; | |
418 | ||
1da177e4 | 419 | dev->card = card; |
1da177e4 LT |
420 | dev->capabilities |= PNP_CONFIGURABLE; |
421 | dev->capabilities |= PNP_READ; | |
422 | dev->capabilities |= PNP_WRITE; | |
423 | dev->capabilities |= PNP_DISABLE; | |
f4490002 | 424 | pnp_init_resources(dev); |
1da177e4 LT |
425 | return dev; |
426 | } | |
427 | ||
1da177e4 LT |
428 | /* |
429 | * Add IRQ resource to resources list. | |
430 | */ | |
c1caf06c BH |
431 | static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, |
432 | struct pnp_option *option, | |
9dd78466 | 433 | int size) |
1da177e4 LT |
434 | { |
435 | unsigned char tmp[3]; | |
436 | struct pnp_irq *irq; | |
437 | unsigned long bits; | |
438 | ||
439 | isapnp_peek(tmp, size); | |
cd861280 | 440 | irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
1da177e4 LT |
441 | if (!irq) |
442 | return; | |
443 | bits = (tmp[1] << 8) | tmp[0]; | |
444 | bitmap_copy(irq->map, &bits, 16); | |
445 | if (size > 2) | |
446 | irq->flags = tmp[2]; | |
447 | else | |
448 | irq->flags = IORESOURCE_IRQ_HIGHEDGE; | |
c1caf06c | 449 | pnp_register_irq_resource(dev, option, irq); |
1da177e4 LT |
450 | } |
451 | ||
452 | /* | |
453 | * Add DMA resource to resources list. | |
454 | */ | |
c1caf06c BH |
455 | static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, |
456 | struct pnp_option *option, | |
9dd78466 | 457 | int size) |
1da177e4 LT |
458 | { |
459 | unsigned char tmp[2]; | |
460 | struct pnp_dma *dma; | |
461 | ||
462 | isapnp_peek(tmp, size); | |
cd861280 | 463 | dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
1da177e4 LT |
464 | if (!dma) |
465 | return; | |
466 | dma->map = tmp[0]; | |
467 | dma->flags = tmp[1]; | |
c1caf06c | 468 | pnp_register_dma_resource(dev, option, dma); |
1da177e4 LT |
469 | } |
470 | ||
471 | /* | |
472 | * Add port resource to resources list. | |
473 | */ | |
c1caf06c BH |
474 | static void __init isapnp_parse_port_resource(struct pnp_dev *dev, |
475 | struct pnp_option *option, | |
9dd78466 | 476 | int size) |
1da177e4 LT |
477 | { |
478 | unsigned char tmp[7]; | |
479 | struct pnp_port *port; | |
480 | ||
481 | isapnp_peek(tmp, size); | |
cd861280 | 482 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
483 | if (!port) |
484 | return; | |
485 | port->min = (tmp[2] << 8) | tmp[1]; | |
486 | port->max = (tmp[4] << 8) | tmp[3]; | |
487 | port->align = tmp[5]; | |
488 | port->size = tmp[6]; | |
08c9f262 | 489 | port->flags = tmp[0] ? IORESOURCE_IO_16BIT_ADDR : 0; |
c1caf06c | 490 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
491 | } |
492 | ||
493 | /* | |
494 | * Add fixed port resource to resources list. | |
495 | */ | |
c1caf06c BH |
496 | static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, |
497 | struct pnp_option *option, | |
9dd78466 | 498 | int size) |
1da177e4 LT |
499 | { |
500 | unsigned char tmp[3]; | |
501 | struct pnp_port *port; | |
502 | ||
503 | isapnp_peek(tmp, size); | |
cd861280 | 504 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
505 | if (!port) |
506 | return; | |
507 | port->min = port->max = (tmp[1] << 8) | tmp[0]; | |
508 | port->size = tmp[2]; | |
509 | port->align = 0; | |
08c9f262 | 510 | port->flags = IORESOURCE_IO_FIXED; |
c1caf06c | 511 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
512 | } |
513 | ||
514 | /* | |
515 | * Add memory resource to resources list. | |
516 | */ | |
c1caf06c BH |
517 | static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, |
518 | struct pnp_option *option, | |
9dd78466 | 519 | int size) |
1da177e4 LT |
520 | { |
521 | unsigned char tmp[9]; | |
522 | struct pnp_mem *mem; | |
523 | ||
524 | isapnp_peek(tmp, size); | |
cd861280 | 525 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
526 | if (!mem) |
527 | return; | |
528 | mem->min = ((tmp[2] << 8) | tmp[1]) << 8; | |
529 | mem->max = ((tmp[4] << 8) | tmp[3]) << 8; | |
530 | mem->align = (tmp[6] << 8) | tmp[5]; | |
531 | mem->size = ((tmp[8] << 8) | tmp[7]) << 8; | |
532 | mem->flags = tmp[0]; | |
c1caf06c | 533 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
534 | } |
535 | ||
536 | /* | |
537 | * Add 32-bit memory resource to resources list. | |
538 | */ | |
c1caf06c BH |
539 | static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, |
540 | struct pnp_option *option, | |
9dd78466 | 541 | int size) |
1da177e4 LT |
542 | { |
543 | unsigned char tmp[17]; | |
544 | struct pnp_mem *mem; | |
545 | ||
546 | isapnp_peek(tmp, size); | |
cd861280 | 547 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
548 | if (!mem) |
549 | return; | |
550 | mem->min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
551 | mem->max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
9dd78466 BH |
552 | mem->align = |
553 | (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; | |
554 | mem->size = | |
555 | (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; | |
1da177e4 | 556 | mem->flags = tmp[0]; |
c1caf06c | 557 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
558 | } |
559 | ||
560 | /* | |
561 | * Add 32-bit fixed memory resource to resources list. | |
562 | */ | |
c1caf06c BH |
563 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, |
564 | struct pnp_option *option, | |
9dd78466 | 565 | int size) |
1da177e4 LT |
566 | { |
567 | unsigned char tmp[9]; | |
568 | struct pnp_mem *mem; | |
569 | ||
570 | isapnp_peek(tmp, size); | |
cd861280 | 571 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
572 | if (!mem) |
573 | return; | |
9dd78466 BH |
574 | mem->min = mem->max = |
575 | (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
1da177e4 LT |
576 | mem->size = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; |
577 | mem->align = 0; | |
578 | mem->flags = tmp[0]; | |
c1caf06c | 579 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
580 | } |
581 | ||
582 | /* | |
583 | * Parse card name for ISA PnP device. | |
9dd78466 | 584 | */ |
1da177e4 LT |
585 | static void __init |
586 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) | |
587 | { | |
588 | if (name[0] == '\0') { | |
9dd78466 BH |
589 | unsigned short size1 = |
590 | *size >= name_max ? (name_max - 1) : *size; | |
1da177e4 LT |
591 | isapnp_peek(name, size1); |
592 | name[size1] = '\0'; | |
593 | *size -= size1; | |
594 | ||
595 | /* clean whitespace from end of string */ | |
9dd78466 | 596 | while (size1 > 0 && name[--size1] == ' ') |
1da177e4 LT |
597 | name[size1] = '\0'; |
598 | } | |
599 | } | |
600 | ||
601 | /* | |
602 | * Parse resource map for logical device. | |
603 | */ | |
1da177e4 LT |
604 | static int __init isapnp_create_device(struct pnp_card *card, |
605 | unsigned short size) | |
606 | { | |
607 | int number = 0, skip = 0, priority = 0, compat = 0; | |
608 | unsigned char type, tmp[17]; | |
609 | struct pnp_option *option; | |
610 | struct pnp_dev *dev; | |
25eb8461 BH |
611 | u32 eisa_id; |
612 | char id[8]; | |
07d4e9af | 613 | |
1da177e4 LT |
614 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
615 | return 1; | |
616 | option = pnp_register_independent_option(dev); | |
617 | if (!option) { | |
618 | kfree(dev); | |
619 | return 1; | |
620 | } | |
9dd78466 | 621 | pnp_add_card_device(card, dev); |
1da177e4 LT |
622 | |
623 | while (1) { | |
9dd78466 | 624 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
625 | return 1; |
626 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) | |
627 | goto __skip; | |
628 | switch (type) { | |
629 | case _STAG_LOGDEVID: | |
630 | if (size >= 5 && size <= 6) { | |
9dd78466 BH |
631 | if ((dev = |
632 | isapnp_parse_device(card, size, | |
633 | number++)) == NULL) | |
1da177e4 LT |
634 | return 1; |
635 | size = 0; | |
636 | skip = 0; | |
637 | option = pnp_register_independent_option(dev); | |
656bde57 JJ |
638 | if (!option) { |
639 | kfree(dev); | |
1da177e4 | 640 | return 1; |
656bde57 | 641 | } |
9dd78466 | 642 | pnp_add_card_device(card, dev); |
1da177e4 LT |
643 | } else { |
644 | skip = 1; | |
645 | } | |
646 | priority = 0; | |
647 | compat = 0; | |
648 | break; | |
649 | case _STAG_COMPATDEVID: | |
650 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { | |
651 | isapnp_peek(tmp, 4); | |
25eb8461 BH |
652 | eisa_id = tmp[0] | tmp[1] << 8 | |
653 | tmp[2] << 16 | tmp[3] << 24; | |
654 | pnp_eisa_id_to_string(eisa_id, id); | |
655 | pnp_add_id(dev, id); | |
1da177e4 LT |
656 | compat++; |
657 | size = 0; | |
658 | } | |
659 | break; | |
660 | case _STAG_IRQ: | |
661 | if (size < 2 || size > 3) | |
662 | goto __skip; | |
c1caf06c | 663 | isapnp_parse_irq_resource(dev, option, size); |
1da177e4 LT |
664 | size = 0; |
665 | break; | |
666 | case _STAG_DMA: | |
667 | if (size != 2) | |
668 | goto __skip; | |
c1caf06c | 669 | isapnp_parse_dma_resource(dev, option, size); |
1da177e4 LT |
670 | size = 0; |
671 | break; | |
672 | case _STAG_STARTDEP: | |
673 | if (size > 1) | |
674 | goto __skip; | |
675 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; | |
676 | if (size > 0) { | |
677 | isapnp_peek(tmp, size); | |
678 | priority = 0x100 | tmp[0]; | |
679 | size = 0; | |
680 | } | |
9dd78466 | 681 | option = pnp_register_dependent_option(dev, priority); |
1da177e4 LT |
682 | if (!option) |
683 | return 1; | |
684 | break; | |
685 | case _STAG_ENDDEP: | |
686 | if (size != 0) | |
687 | goto __skip; | |
688 | priority = 0; | |
c1caf06c | 689 | dev_dbg(&dev->dev, "end dependent options\n"); |
1da177e4 LT |
690 | break; |
691 | case _STAG_IOPORT: | |
692 | if (size != 7) | |
693 | goto __skip; | |
c1caf06c | 694 | isapnp_parse_port_resource(dev, option, size); |
1da177e4 LT |
695 | size = 0; |
696 | break; | |
697 | case _STAG_FIXEDIO: | |
698 | if (size != 3) | |
699 | goto __skip; | |
c1caf06c | 700 | isapnp_parse_fixed_port_resource(dev, option, size); |
1da177e4 LT |
701 | size = 0; |
702 | break; | |
703 | case _STAG_VENDOR: | |
704 | break; | |
705 | case _LTAG_MEMRANGE: | |
706 | if (size != 9) | |
707 | goto __skip; | |
c1caf06c | 708 | isapnp_parse_mem_resource(dev, option, size); |
1da177e4 LT |
709 | size = 0; |
710 | break; | |
711 | case _LTAG_ANSISTR: | |
712 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); | |
713 | break; | |
714 | case _LTAG_UNICODESTR: | |
715 | /* silently ignore */ | |
716 | /* who use unicode for hardware identification? */ | |
717 | break; | |
718 | case _LTAG_VENDOR: | |
719 | break; | |
720 | case _LTAG_MEM32RANGE: | |
721 | if (size != 17) | |
722 | goto __skip; | |
c1caf06c | 723 | isapnp_parse_mem32_resource(dev, option, size); |
1da177e4 LT |
724 | size = 0; |
725 | break; | |
726 | case _LTAG_FIXEDMEM32RANGE: | |
727 | if (size != 9) | |
728 | goto __skip; | |
c1caf06c | 729 | isapnp_parse_fixed_mem32_resource(dev, option, size); |
1da177e4 LT |
730 | size = 0; |
731 | break; | |
732 | case _STAG_END: | |
733 | if (size > 0) | |
734 | isapnp_skip_bytes(size); | |
735 | return 1; | |
736 | default: | |
af11cb2d BH |
737 | dev_err(&dev->dev, "unknown tag %#x (card %i), " |
738 | "ignored\n", type, card->number); | |
1da177e4 | 739 | } |
1e0aa9ad | 740 | __skip: |
9dd78466 BH |
741 | if (size > 0) |
742 | isapnp_skip_bytes(size); | |
1da177e4 LT |
743 | } |
744 | return 0; | |
745 | } | |
746 | ||
747 | /* | |
748 | * Parse resource map for ISA PnP card. | |
749 | */ | |
1da177e4 LT |
750 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
751 | { | |
752 | unsigned char type, tmp[17]; | |
753 | unsigned short size; | |
754 | ||
755 | while (1) { | |
9dd78466 | 756 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
757 | return; |
758 | switch (type) { | |
759 | case _STAG_PNPVERNO: | |
760 | if (size != 2) | |
761 | goto __skip; | |
762 | isapnp_peek(tmp, 2); | |
763 | card->pnpver = tmp[0]; | |
764 | card->productver = tmp[1]; | |
765 | size = 0; | |
766 | break; | |
767 | case _STAG_LOGDEVID: | |
768 | if (size >= 5 && size <= 6) { | |
9dd78466 | 769 | if (isapnp_create_device(card, size) == 1) |
1da177e4 LT |
770 | return; |
771 | size = 0; | |
772 | } | |
773 | break; | |
774 | case _STAG_VENDOR: | |
775 | break; | |
776 | case _LTAG_ANSISTR: | |
9dd78466 BH |
777 | isapnp_parse_name(card->name, sizeof(card->name), |
778 | &size); | |
1da177e4 LT |
779 | break; |
780 | case _LTAG_UNICODESTR: | |
781 | /* silently ignore */ | |
782 | /* who use unicode for hardware identification? */ | |
783 | break; | |
784 | case _LTAG_VENDOR: | |
785 | break; | |
786 | case _STAG_END: | |
787 | if (size > 0) | |
788 | isapnp_skip_bytes(size); | |
789 | return; | |
790 | default: | |
af11cb2d BH |
791 | dev_err(&card->dev, "unknown tag %#x, ignored\n", |
792 | type); | |
1da177e4 | 793 | } |
1e0aa9ad | 794 | __skip: |
9dd78466 BH |
795 | if (size > 0) |
796 | isapnp_skip_bytes(size); | |
1da177e4 LT |
797 | } |
798 | } | |
799 | ||
800 | /* | |
801 | * Compute ISA PnP checksum for first eight bytes. | |
802 | */ | |
1da177e4 LT |
803 | static unsigned char __init isapnp_checksum(unsigned char *data) |
804 | { | |
805 | int i, j; | |
806 | unsigned char checksum = 0x6a, bit, b; | |
807 | ||
808 | for (i = 0; i < 8; i++) { | |
809 | b = data[i]; | |
810 | for (j = 0; j < 8; j++) { | |
811 | bit = 0; | |
812 | if (b & (1 << j)) | |
813 | bit = 1; | |
9dd78466 BH |
814 | checksum = |
815 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
816 | | (checksum >> 1); | |
1da177e4 LT |
817 | } |
818 | } | |
819 | return checksum; | |
820 | } | |
821 | ||
1da177e4 LT |
822 | /* |
823 | * Build device list for all present ISA PnP devices. | |
824 | */ | |
1da177e4 LT |
825 | static int __init isapnp_build_device_list(void) |
826 | { | |
827 | int csn; | |
828 | unsigned char header[9], checksum; | |
829 | struct pnp_card *card; | |
068076d5 BH |
830 | u32 eisa_id; |
831 | char id[8]; | |
1da177e4 LT |
832 | |
833 | isapnp_wait(); | |
834 | isapnp_key(); | |
835 | for (csn = 1; csn <= isapnp_csn_count; csn++) { | |
836 | isapnp_wake(csn); | |
837 | isapnp_peek(header, 9); | |
838 | checksum = isapnp_checksum(header); | |
068076d5 BH |
839 | eisa_id = header[0] | header[1] << 8 | |
840 | header[2] << 16 | header[3] << 24; | |
841 | pnp_eisa_id_to_string(eisa_id, id); | |
6bf2aab2 BH |
842 | card = pnp_alloc_card(&isapnp_protocol, csn, id); |
843 | if (!card) | |
844 | continue; | |
845 | ||
af11cb2d BH |
846 | #if 0 |
847 | dev_info(&card->dev, | |
848 | "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", | |
849 | header[0], header[1], header[2], header[3], header[4], | |
850 | header[5], header[6], header[7], header[8]); | |
851 | dev_info(&card->dev, "checksum = %#x\n", checksum); | |
852 | #endif | |
6bf2aab2 | 853 | INIT_LIST_HEAD(&card->devices); |
9dd78466 BH |
854 | card->serial = |
855 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | | |
856 | header[4]; | |
1da177e4 LT |
857 | isapnp_checksum_value = 0x00; |
858 | isapnp_parse_resource_map(card); | |
859 | if (isapnp_checksum_value != 0x00) | |
af11cb2d BH |
860 | dev_err(&card->dev, "invalid checksum %#x\n", |
861 | isapnp_checksum_value); | |
1da177e4 | 862 | card->checksum = isapnp_checksum_value; |
1da177e4 LT |
863 | |
864 | pnp_add_card(card); | |
865 | } | |
866 | isapnp_wait(); | |
867 | return 0; | |
868 | } | |
869 | ||
870 | /* | |
871 | * Basic configuration routines. | |
872 | */ | |
873 | ||
874 | int isapnp_present(void) | |
875 | { | |
876 | struct pnp_card *card; | |
07d4e9af | 877 | |
1da177e4 LT |
878 | pnp_for_each_card(card) { |
879 | if (card->protocol == &isapnp_protocol) | |
880 | return 1; | |
881 | } | |
882 | return 0; | |
883 | } | |
884 | ||
885 | int isapnp_cfg_begin(int csn, int logdev) | |
886 | { | |
887 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) | |
888 | return -EINVAL; | |
14cc3e2b | 889 | mutex_lock(&isapnp_cfg_mutex); |
1da177e4 LT |
890 | isapnp_wait(); |
891 | isapnp_key(); | |
892 | isapnp_wake(csn); | |
893 | #if 0 | |
894 | /* to avoid malfunction when the isapnptools package is used */ | |
895 | /* we must set RDP to our value again */ | |
896 | /* it is possible to set RDP only in the isolation phase */ | |
897 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ | |
898 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ | |
9dd78466 BH |
899 | mdelay(2); /* is this necessary? */ |
900 | isapnp_wake(csn); /* bring card into sleep state */ | |
901 | isapnp_wake(0); /* bring card into isolation state */ | |
902 | isapnp_set_rdp(); /* reset the RDP port */ | |
903 | udelay(1000); /* delay 1000us */ | |
1da177e4 | 904 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
9dd78466 | 905 | udelay(250); /* is this necessary? */ |
1da177e4 LT |
906 | #endif |
907 | if (logdev >= 0) | |
908 | isapnp_device(logdev); | |
909 | return 0; | |
910 | } | |
911 | ||
912 | int isapnp_cfg_end(void) | |
913 | { | |
914 | isapnp_wait(); | |
14cc3e2b | 915 | mutex_unlock(&isapnp_cfg_mutex); |
1da177e4 LT |
916 | return 0; |
917 | } | |
918 | ||
1da177e4 | 919 | /* |
07d4e9af | 920 | * Initialization. |
1da177e4 LT |
921 | */ |
922 | ||
1da177e4 LT |
923 | EXPORT_SYMBOL(isapnp_protocol); |
924 | EXPORT_SYMBOL(isapnp_present); | |
925 | EXPORT_SYMBOL(isapnp_cfg_begin); | |
926 | EXPORT_SYMBOL(isapnp_cfg_end); | |
1da177e4 LT |
927 | EXPORT_SYMBOL(isapnp_write_byte); |
928 | ||
01115e7d | 929 | static int isapnp_get_resources(struct pnp_dev *dev) |
1da177e4 | 930 | { |
01115e7d | 931 | int i, ret; |
1da177e4 | 932 | |
01115e7d BH |
933 | dev_dbg(&dev->dev, "get resources\n"); |
934 | pnp_init_resources(dev); | |
935 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1da177e4 | 936 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); |
01115e7d BH |
937 | if (!dev->active) |
938 | goto __end; | |
939 | ||
940 | for (i = 0; i < ISAPNP_MAX_PORT; i++) { | |
941 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1)); | |
87e4acf3 BH |
942 | pnp_add_io_resource(dev, ret, ret, |
943 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
944 | } |
945 | for (i = 0; i < ISAPNP_MAX_MEM; i++) { | |
946 | ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8; | |
87e4acf3 BH |
947 | pnp_add_mem_resource(dev, ret, ret, |
948 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
949 | } |
950 | for (i = 0; i < ISAPNP_MAX_IRQ; i++) { | |
951 | ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8; | |
87e4acf3 BH |
952 | pnp_add_irq_resource(dev, ret, |
953 | ret == 0 ? IORESOURCE_DISABLED : 0); | |
01115e7d BH |
954 | } |
955 | for (i = 0; i < ISAPNP_MAX_DMA; i++) { | |
956 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + i); | |
87e4acf3 BH |
957 | pnp_add_dma_resource(dev, ret, |
958 | ret == 4 ? IORESOURCE_DISABLED : 0); | |
1da177e4 | 959 | } |
1e0aa9ad | 960 | |
01115e7d | 961 | __end: |
1da177e4 | 962 | isapnp_cfg_end(); |
01115e7d | 963 | return 0; |
1da177e4 LT |
964 | } |
965 | ||
59284cb4 | 966 | static int isapnp_set_resources(struct pnp_dev *dev) |
1da177e4 | 967 | { |
06cb58a6 | 968 | struct resource *res; |
87e4acf3 | 969 | int tmp; |
1da177e4 | 970 | |
72dcc883 | 971 | dev_dbg(&dev->dev, "set resources\n"); |
1da177e4 LT |
972 | isapnp_cfg_begin(dev->card->number, dev->number); |
973 | dev->active = 1; | |
06cb58a6 | 974 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
87e4acf3 | 975 | res = pnp_get_resource(dev, IORESOURCE_IO, tmp); |
aee3ad81 | 976 | if (pnp_resource_enabled(res)) { |
06cb58a6 | 977 | dev_dbg(&dev->dev, " set io %d to %#llx\n", |
87e4acf3 BH |
978 | tmp, (unsigned long long) res->start); |
979 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), | |
06cb58a6 BH |
980 | res->start); |
981 | } | |
72dcc883 | 982 | } |
06cb58a6 | 983 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
87e4acf3 | 984 | res = pnp_get_resource(dev, IORESOURCE_IRQ, tmp); |
aee3ad81 | 985 | if (pnp_resource_enabled(res)) { |
06cb58a6 BH |
986 | int irq = res->start; |
987 | if (irq == 2) | |
988 | irq = 9; | |
87e4acf3 BH |
989 | dev_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); |
990 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); | |
06cb58a6 | 991 | } |
1da177e4 | 992 | } |
06cb58a6 | 993 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
87e4acf3 | 994 | res = pnp_get_resource(dev, IORESOURCE_DMA, tmp); |
aee3ad81 | 995 | if (pnp_resource_enabled(res)) { |
06cb58a6 | 996 | dev_dbg(&dev->dev, " set dma %d to %lld\n", |
87e4acf3 BH |
997 | tmp, (unsigned long long) res->start); |
998 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, res->start); | |
06cb58a6 | 999 | } |
72dcc883 | 1000 | } |
06cb58a6 | 1001 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
87e4acf3 | 1002 | res = pnp_get_resource(dev, IORESOURCE_MEM, tmp); |
aee3ad81 | 1003 | if (pnp_resource_enabled(res)) { |
06cb58a6 | 1004 | dev_dbg(&dev->dev, " set mem %d to %#llx\n", |
87e4acf3 BH |
1005 | tmp, (unsigned long long) res->start); |
1006 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), | |
06cb58a6 BH |
1007 | (res->start >> 8) & 0xffff); |
1008 | } | |
72dcc883 | 1009 | } |
1da177e4 LT |
1010 | /* FIXME: We aren't handling 32bit mems properly here */ |
1011 | isapnp_activate(dev->number); | |
1012 | isapnp_cfg_end(); | |
1013 | return 0; | |
1014 | } | |
1015 | ||
1016 | static int isapnp_disable_resources(struct pnp_dev *dev) | |
1017 | { | |
b1734913 | 1018 | if (!dev->active) |
1da177e4 LT |
1019 | return -EINVAL; |
1020 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1021 | isapnp_deactivate(dev->number); | |
1022 | dev->active = 0; | |
1023 | isapnp_cfg_end(); | |
1024 | return 0; | |
1025 | } | |
1026 | ||
1027 | struct pnp_protocol isapnp_protocol = { | |
9dd78466 BH |
1028 | .name = "ISA Plug and Play", |
1029 | .get = isapnp_get_resources, | |
1030 | .set = isapnp_set_resources, | |
1da177e4 LT |
1031 | .disable = isapnp_disable_resources, |
1032 | }; | |
1033 | ||
1034 | static int __init isapnp_init(void) | |
1035 | { | |
1036 | int cards; | |
1037 | struct pnp_card *card; | |
1038 | struct pnp_dev *dev; | |
1039 | ||
1040 | if (isapnp_disable) { | |
1da177e4 LT |
1041 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
1042 | return 0; | |
1043 | } | |
07bd1c4a DW |
1044 | #ifdef CONFIG_PPC_MERGE |
1045 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) | |
1046 | return -EINVAL; | |
1047 | #endif | |
1da177e4 LT |
1048 | #ifdef ISAPNP_REGION_OK |
1049 | if (!request_region(_PIDXR, 1, "isapnp index")) { | |
9dd78466 BH |
1050 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
1051 | _PIDXR); | |
1da177e4 LT |
1052 | return -EBUSY; |
1053 | } | |
1054 | #endif | |
1055 | if (!request_region(_PNPWRP, 1, "isapnp write")) { | |
9dd78466 BH |
1056 | printk(KERN_ERR |
1057 | "isapnp: Write Data Register 0x%x already used\n", | |
1058 | _PNPWRP); | |
1da177e4 LT |
1059 | #ifdef ISAPNP_REGION_OK |
1060 | release_region(_PIDXR, 1); | |
1061 | #endif | |
1062 | return -EBUSY; | |
1063 | } | |
1064 | ||
9dd78466 | 1065 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
1da177e4 LT |
1066 | return -EBUSY; |
1067 | ||
1068 | /* | |
9dd78466 BH |
1069 | * Print a message. The existing ISAPnP code is hanging machines |
1070 | * so let the user know where. | |
1da177e4 | 1071 | */ |
9dd78466 | 1072 | |
1da177e4 LT |
1073 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
1074 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { | |
1075 | isapnp_rdp |= 3; | |
1076 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { | |
9dd78466 BH |
1077 | printk(KERN_ERR |
1078 | "isapnp: Read Data Register 0x%x already used\n", | |
1079 | isapnp_rdp); | |
1da177e4 LT |
1080 | #ifdef ISAPNP_REGION_OK |
1081 | release_region(_PIDXR, 1); | |
1082 | #endif | |
1083 | release_region(_PNPWRP, 1); | |
1084 | return -EBUSY; | |
1085 | } | |
1086 | isapnp_set_rdp(); | |
1087 | } | |
1da177e4 LT |
1088 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
1089 | cards = isapnp_isolate(); | |
9dd78466 | 1090 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
1da177e4 LT |
1091 | #ifdef ISAPNP_REGION_OK |
1092 | release_region(_PIDXR, 1); | |
1093 | #endif | |
1094 | release_region(_PNPWRP, 1); | |
9dd78466 BH |
1095 | printk(KERN_INFO |
1096 | "isapnp: No Plug & Play device found\n"); | |
1da177e4 LT |
1097 | return 0; |
1098 | } | |
1099 | request_region(isapnp_rdp, 1, "isapnp read"); | |
1100 | } | |
1101 | isapnp_build_device_list(); | |
1102 | cards = 0; | |
1103 | ||
9dd78466 | 1104 | protocol_for_each_card(&isapnp_protocol, card) { |
1da177e4 LT |
1105 | cards++; |
1106 | if (isapnp_verbose) { | |
af11cb2d BH |
1107 | dev_info(&card->dev, "card '%s'\n", |
1108 | card->name[0] ? card->name : "unknown"); | |
1da177e4 LT |
1109 | if (isapnp_verbose < 2) |
1110 | continue; | |
9dd78466 | 1111 | card_for_each_dev(card, dev) { |
af11cb2d BH |
1112 | dev_info(&card->dev, "device '%s'\n", |
1113 | dev->name[0] ? dev->name : "unknown"); | |
1da177e4 LT |
1114 | } |
1115 | } | |
1116 | } | |
1e0aa9ad | 1117 | if (cards) |
9dd78466 BH |
1118 | printk(KERN_INFO |
1119 | "isapnp: %i Plug & Play card%s detected total\n", cards, | |
1120 | cards > 1 ? "s" : ""); | |
1e0aa9ad | 1121 | else |
1da177e4 | 1122 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
1da177e4 LT |
1123 | |
1124 | isapnp_proc_init(); | |
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | device_initcall(isapnp_init); | |
1129 | ||
1130 | /* format is: noisapnp */ | |
1131 | ||
1132 | static int __init isapnp_setup_disable(char *str) | |
1133 | { | |
1134 | isapnp_disable = 1; | |
1135 | return 1; | |
1136 | } | |
1137 | ||
1138 | __setup("noisapnp", isapnp_setup_disable); | |
1139 | ||
1140 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ | |
1141 | ||
1142 | static int __init isapnp_setup_isapnp(char *str) | |
1143 | { | |
9dd78466 BH |
1144 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
1145 | (get_option(&str, &isapnp_reset) == 2) && | |
1146 | (get_option(&str, &isapnp_verbose) == 2)); | |
1da177e4 LT |
1147 | return 1; |
1148 | } | |
1149 | ||
1150 | __setup("isapnp=", isapnp_setup_isapnp); |