Commit | Line | Data |
---|---|---|
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 | ||
400 | /* | |
401 | * Parse EISA id. | |
402 | */ | |
9dd78466 BH |
403 | static void isapnp_parse_id(struct pnp_dev *dev, unsigned short vendor, |
404 | unsigned short device) | |
1da177e4 | 405 | { |
772defc6 BH |
406 | char id[8]; |
407 | ||
408 | sprintf(id, "%c%c%c%x%x%x%x", | |
9dd78466 BH |
409 | 'A' + ((vendor >> 2) & 0x3f) - 1, |
410 | 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, | |
411 | 'A' + ((vendor >> 8) & 0x1f) - 1, | |
412 | (device >> 4) & 0x0f, | |
413 | device & 0x0f, (device >> 12) & 0x0f, (device >> 8) & 0x0f); | |
772defc6 BH |
414 | |
415 | pnp_add_id(dev, id); | |
1da177e4 LT |
416 | } |
417 | ||
418 | /* | |
419 | * Parse logical device tag. | |
420 | */ | |
9dd78466 BH |
421 | static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, |
422 | int size, int number) | |
1da177e4 LT |
423 | { |
424 | unsigned char tmp[6]; | |
425 | struct pnp_dev *dev; | |
426 | ||
427 | isapnp_peek(tmp, size); | |
cd861280 | 428 | dev = kzalloc(sizeof(struct pnp_dev), GFP_KERNEL); |
1da177e4 LT |
429 | if (!dev) |
430 | return NULL; | |
431 | dev->number = number; | |
432 | isapnp_parse_id(dev, (tmp[1] << 8) | tmp[0], (tmp[3] << 8) | tmp[2]); | |
433 | dev->regs = tmp[4]; | |
434 | dev->card = card; | |
435 | if (size > 5) | |
436 | dev->regs |= tmp[5] << 8; | |
437 | dev->protocol = &isapnp_protocol; | |
438 | dev->capabilities |= PNP_CONFIGURABLE; | |
439 | dev->capabilities |= PNP_READ; | |
440 | dev->capabilities |= PNP_WRITE; | |
441 | dev->capabilities |= PNP_DISABLE; | |
442 | pnp_init_resource_table(&dev->res); | |
443 | return dev; | |
444 | } | |
445 | ||
1da177e4 LT |
446 | /* |
447 | * Add IRQ resource to resources list. | |
448 | */ | |
1da177e4 | 449 | static void __init isapnp_parse_irq_resource(struct pnp_option *option, |
9dd78466 | 450 | int size) |
1da177e4 LT |
451 | { |
452 | unsigned char tmp[3]; | |
453 | struct pnp_irq *irq; | |
454 | unsigned long bits; | |
455 | ||
456 | isapnp_peek(tmp, size); | |
cd861280 | 457 | irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
1da177e4 LT |
458 | if (!irq) |
459 | return; | |
460 | bits = (tmp[1] << 8) | tmp[0]; | |
461 | bitmap_copy(irq->map, &bits, 16); | |
462 | if (size > 2) | |
463 | irq->flags = tmp[2]; | |
464 | else | |
465 | irq->flags = IORESOURCE_IRQ_HIGHEDGE; | |
466 | pnp_register_irq_resource(option, irq); | |
1da177e4 LT |
467 | } |
468 | ||
469 | /* | |
470 | * Add DMA resource to resources list. | |
471 | */ | |
1da177e4 | 472 | static void __init isapnp_parse_dma_resource(struct pnp_option *option, |
9dd78466 | 473 | int size) |
1da177e4 LT |
474 | { |
475 | unsigned char tmp[2]; | |
476 | struct pnp_dma *dma; | |
477 | ||
478 | isapnp_peek(tmp, size); | |
cd861280 | 479 | dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
1da177e4 LT |
480 | if (!dma) |
481 | return; | |
482 | dma->map = tmp[0]; | |
483 | dma->flags = tmp[1]; | |
484 | pnp_register_dma_resource(option, dma); | |
1da177e4 LT |
485 | } |
486 | ||
487 | /* | |
488 | * Add port resource to resources list. | |
489 | */ | |
1da177e4 | 490 | static void __init isapnp_parse_port_resource(struct pnp_option *option, |
9dd78466 | 491 | int size) |
1da177e4 LT |
492 | { |
493 | unsigned char tmp[7]; | |
494 | struct pnp_port *port; | |
495 | ||
496 | isapnp_peek(tmp, size); | |
cd861280 | 497 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
498 | if (!port) |
499 | return; | |
500 | port->min = (tmp[2] << 8) | tmp[1]; | |
501 | port->max = (tmp[4] << 8) | tmp[3]; | |
502 | port->align = tmp[5]; | |
503 | port->size = tmp[6]; | |
504 | port->flags = tmp[0] ? PNP_PORT_FLAG_16BITADDR : 0; | |
9dd78466 | 505 | pnp_register_port_resource(option, port); |
1da177e4 LT |
506 | } |
507 | ||
508 | /* | |
509 | * Add fixed port resource to resources list. | |
510 | */ | |
1da177e4 | 511 | static void __init isapnp_parse_fixed_port_resource(struct pnp_option *option, |
9dd78466 | 512 | int size) |
1da177e4 LT |
513 | { |
514 | unsigned char tmp[3]; | |
515 | struct pnp_port *port; | |
516 | ||
517 | isapnp_peek(tmp, size); | |
cd861280 | 518 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
519 | if (!port) |
520 | return; | |
521 | port->min = port->max = (tmp[1] << 8) | tmp[0]; | |
522 | port->size = tmp[2]; | |
523 | port->align = 0; | |
524 | port->flags = PNP_PORT_FLAG_FIXED; | |
9dd78466 | 525 | pnp_register_port_resource(option, port); |
1da177e4 LT |
526 | } |
527 | ||
528 | /* | |
529 | * Add memory resource to resources list. | |
530 | */ | |
1da177e4 | 531 | static void __init isapnp_parse_mem_resource(struct pnp_option *option, |
9dd78466 | 532 | int size) |
1da177e4 LT |
533 | { |
534 | unsigned char tmp[9]; | |
535 | struct pnp_mem *mem; | |
536 | ||
537 | isapnp_peek(tmp, size); | |
cd861280 | 538 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
539 | if (!mem) |
540 | return; | |
541 | mem->min = ((tmp[2] << 8) | tmp[1]) << 8; | |
542 | mem->max = ((tmp[4] << 8) | tmp[3]) << 8; | |
543 | mem->align = (tmp[6] << 8) | tmp[5]; | |
544 | mem->size = ((tmp[8] << 8) | tmp[7]) << 8; | |
545 | mem->flags = tmp[0]; | |
9dd78466 | 546 | pnp_register_mem_resource(option, mem); |
1da177e4 LT |
547 | } |
548 | ||
549 | /* | |
550 | * Add 32-bit memory resource to resources list. | |
551 | */ | |
1da177e4 | 552 | static void __init isapnp_parse_mem32_resource(struct pnp_option *option, |
9dd78466 | 553 | int size) |
1da177e4 LT |
554 | { |
555 | unsigned char tmp[17]; | |
556 | struct pnp_mem *mem; | |
557 | ||
558 | isapnp_peek(tmp, size); | |
cd861280 | 559 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
560 | if (!mem) |
561 | return; | |
562 | mem->min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
563 | mem->max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
9dd78466 BH |
564 | mem->align = |
565 | (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; | |
566 | mem->size = | |
567 | (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; | |
1da177e4 | 568 | mem->flags = tmp[0]; |
9dd78466 | 569 | pnp_register_mem_resource(option, mem); |
1da177e4 LT |
570 | } |
571 | ||
572 | /* | |
573 | * Add 32-bit fixed memory resource to resources list. | |
574 | */ | |
1da177e4 | 575 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_option *option, |
9dd78466 | 576 | int size) |
1da177e4 LT |
577 | { |
578 | unsigned char tmp[9]; | |
579 | struct pnp_mem *mem; | |
580 | ||
581 | isapnp_peek(tmp, size); | |
cd861280 | 582 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
583 | if (!mem) |
584 | return; | |
9dd78466 BH |
585 | mem->min = mem->max = |
586 | (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
1da177e4 LT |
587 | mem->size = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; |
588 | mem->align = 0; | |
589 | mem->flags = tmp[0]; | |
9dd78466 | 590 | pnp_register_mem_resource(option, mem); |
1da177e4 LT |
591 | } |
592 | ||
593 | /* | |
594 | * Parse card name for ISA PnP device. | |
9dd78466 | 595 | */ |
1da177e4 LT |
596 | static void __init |
597 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) | |
598 | { | |
599 | if (name[0] == '\0') { | |
9dd78466 BH |
600 | unsigned short size1 = |
601 | *size >= name_max ? (name_max - 1) : *size; | |
1da177e4 LT |
602 | isapnp_peek(name, size1); |
603 | name[size1] = '\0'; | |
604 | *size -= size1; | |
605 | ||
606 | /* clean whitespace from end of string */ | |
9dd78466 | 607 | while (size1 > 0 && name[--size1] == ' ') |
1da177e4 LT |
608 | name[size1] = '\0'; |
609 | } | |
610 | } | |
611 | ||
612 | /* | |
613 | * Parse resource map for logical device. | |
614 | */ | |
1da177e4 LT |
615 | static int __init isapnp_create_device(struct pnp_card *card, |
616 | unsigned short size) | |
617 | { | |
618 | int number = 0, skip = 0, priority = 0, compat = 0; | |
619 | unsigned char type, tmp[17]; | |
620 | struct pnp_option *option; | |
621 | struct pnp_dev *dev; | |
07d4e9af | 622 | |
1da177e4 LT |
623 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
624 | return 1; | |
625 | option = pnp_register_independent_option(dev); | |
626 | if (!option) { | |
627 | kfree(dev); | |
628 | return 1; | |
629 | } | |
9dd78466 | 630 | pnp_add_card_device(card, dev); |
1da177e4 LT |
631 | |
632 | while (1) { | |
9dd78466 | 633 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
634 | return 1; |
635 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) | |
636 | goto __skip; | |
637 | switch (type) { | |
638 | case _STAG_LOGDEVID: | |
639 | if (size >= 5 && size <= 6) { | |
9dd78466 BH |
640 | if ((dev = |
641 | isapnp_parse_device(card, size, | |
642 | number++)) == NULL) | |
1da177e4 LT |
643 | return 1; |
644 | size = 0; | |
645 | skip = 0; | |
646 | option = pnp_register_independent_option(dev); | |
656bde57 JJ |
647 | if (!option) { |
648 | kfree(dev); | |
1da177e4 | 649 | return 1; |
656bde57 | 650 | } |
9dd78466 | 651 | pnp_add_card_device(card, dev); |
1da177e4 LT |
652 | } else { |
653 | skip = 1; | |
654 | } | |
655 | priority = 0; | |
656 | compat = 0; | |
657 | break; | |
658 | case _STAG_COMPATDEVID: | |
659 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { | |
660 | isapnp_peek(tmp, 4); | |
9dd78466 BH |
661 | isapnp_parse_id(dev, (tmp[1] << 8) | tmp[0], |
662 | (tmp[3] << 8) | tmp[2]); | |
1da177e4 LT |
663 | compat++; |
664 | size = 0; | |
665 | } | |
666 | break; | |
667 | case _STAG_IRQ: | |
668 | if (size < 2 || size > 3) | |
669 | goto __skip; | |
670 | isapnp_parse_irq_resource(option, size); | |
671 | size = 0; | |
672 | break; | |
673 | case _STAG_DMA: | |
674 | if (size != 2) | |
675 | goto __skip; | |
676 | isapnp_parse_dma_resource(option, size); | |
677 | size = 0; | |
678 | break; | |
679 | case _STAG_STARTDEP: | |
680 | if (size > 1) | |
681 | goto __skip; | |
682 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; | |
683 | if (size > 0) { | |
684 | isapnp_peek(tmp, size); | |
685 | priority = 0x100 | tmp[0]; | |
686 | size = 0; | |
687 | } | |
9dd78466 | 688 | option = pnp_register_dependent_option(dev, priority); |
1da177e4 LT |
689 | if (!option) |
690 | return 1; | |
691 | break; | |
692 | case _STAG_ENDDEP: | |
693 | if (size != 0) | |
694 | goto __skip; | |
695 | priority = 0; | |
696 | break; | |
697 | case _STAG_IOPORT: | |
698 | if (size != 7) | |
699 | goto __skip; | |
700 | isapnp_parse_port_resource(option, size); | |
701 | size = 0; | |
702 | break; | |
703 | case _STAG_FIXEDIO: | |
704 | if (size != 3) | |
705 | goto __skip; | |
706 | isapnp_parse_fixed_port_resource(option, size); | |
707 | size = 0; | |
708 | break; | |
709 | case _STAG_VENDOR: | |
710 | break; | |
711 | case _LTAG_MEMRANGE: | |
712 | if (size != 9) | |
713 | goto __skip; | |
714 | isapnp_parse_mem_resource(option, size); | |
715 | size = 0; | |
716 | break; | |
717 | case _LTAG_ANSISTR: | |
718 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); | |
719 | break; | |
720 | case _LTAG_UNICODESTR: | |
721 | /* silently ignore */ | |
722 | /* who use unicode for hardware identification? */ | |
723 | break; | |
724 | case _LTAG_VENDOR: | |
725 | break; | |
726 | case _LTAG_MEM32RANGE: | |
727 | if (size != 17) | |
728 | goto __skip; | |
729 | isapnp_parse_mem32_resource(option, size); | |
730 | size = 0; | |
731 | break; | |
732 | case _LTAG_FIXEDMEM32RANGE: | |
733 | if (size != 9) | |
734 | goto __skip; | |
735 | isapnp_parse_fixed_mem32_resource(option, size); | |
736 | size = 0; | |
737 | break; | |
738 | case _STAG_END: | |
739 | if (size > 0) | |
740 | isapnp_skip_bytes(size); | |
741 | return 1; | |
742 | default: | |
9dd78466 BH |
743 | printk(KERN_ERR |
744 | "isapnp: unexpected or unknown tag type 0x%x for logical device %i (device %i), ignored\n", | |
745 | type, dev->number, card->number); | |
1da177e4 | 746 | } |
1e0aa9ad | 747 | __skip: |
9dd78466 BH |
748 | if (size > 0) |
749 | isapnp_skip_bytes(size); | |
1da177e4 LT |
750 | } |
751 | return 0; | |
752 | } | |
753 | ||
754 | /* | |
755 | * Parse resource map for ISA PnP card. | |
756 | */ | |
1da177e4 LT |
757 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
758 | { | |
759 | unsigned char type, tmp[17]; | |
760 | unsigned short size; | |
761 | ||
762 | while (1) { | |
9dd78466 | 763 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
764 | return; |
765 | switch (type) { | |
766 | case _STAG_PNPVERNO: | |
767 | if (size != 2) | |
768 | goto __skip; | |
769 | isapnp_peek(tmp, 2); | |
770 | card->pnpver = tmp[0]; | |
771 | card->productver = tmp[1]; | |
772 | size = 0; | |
773 | break; | |
774 | case _STAG_LOGDEVID: | |
775 | if (size >= 5 && size <= 6) { | |
9dd78466 | 776 | if (isapnp_create_device(card, size) == 1) |
1da177e4 LT |
777 | return; |
778 | size = 0; | |
779 | } | |
780 | break; | |
781 | case _STAG_VENDOR: | |
782 | break; | |
783 | case _LTAG_ANSISTR: | |
9dd78466 BH |
784 | isapnp_parse_name(card->name, sizeof(card->name), |
785 | &size); | |
1da177e4 LT |
786 | break; |
787 | case _LTAG_UNICODESTR: | |
788 | /* silently ignore */ | |
789 | /* who use unicode for hardware identification? */ | |
790 | break; | |
791 | case _LTAG_VENDOR: | |
792 | break; | |
793 | case _STAG_END: | |
794 | if (size > 0) | |
795 | isapnp_skip_bytes(size); | |
796 | return; | |
797 | default: | |
9dd78466 BH |
798 | printk(KERN_ERR |
799 | "isapnp: unexpected or unknown tag type 0x%x for device %i, ignored\n", | |
800 | type, card->number); | |
1da177e4 | 801 | } |
1e0aa9ad | 802 | __skip: |
9dd78466 BH |
803 | if (size > 0) |
804 | isapnp_skip_bytes(size); | |
1da177e4 LT |
805 | } |
806 | } | |
807 | ||
808 | /* | |
809 | * Compute ISA PnP checksum for first eight bytes. | |
810 | */ | |
1da177e4 LT |
811 | static unsigned char __init isapnp_checksum(unsigned char *data) |
812 | { | |
813 | int i, j; | |
814 | unsigned char checksum = 0x6a, bit, b; | |
815 | ||
816 | for (i = 0; i < 8; i++) { | |
817 | b = data[i]; | |
818 | for (j = 0; j < 8; j++) { | |
819 | bit = 0; | |
820 | if (b & (1 << j)) | |
821 | bit = 1; | |
9dd78466 BH |
822 | checksum = |
823 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
824 | | (checksum >> 1); | |
1da177e4 LT |
825 | } |
826 | } | |
827 | return checksum; | |
828 | } | |
829 | ||
830 | /* | |
831 | * Parse EISA id for ISA PnP card. | |
832 | */ | |
9dd78466 BH |
833 | static void isapnp_parse_card_id(struct pnp_card *card, unsigned short vendor, |
834 | unsigned short device) | |
1da177e4 | 835 | { |
9dd78466 | 836 | struct pnp_id *id = kzalloc(sizeof(struct pnp_id), GFP_KERNEL); |
07d4e9af | 837 | |
1da177e4 LT |
838 | if (!id) |
839 | return; | |
840 | sprintf(id->id, "%c%c%c%x%x%x%x", | |
9dd78466 BH |
841 | 'A' + ((vendor >> 2) & 0x3f) - 1, |
842 | 'A' + (((vendor & 3) << 3) | ((vendor >> 13) & 7)) - 1, | |
843 | 'A' + ((vendor >> 8) & 0x1f) - 1, | |
844 | (device >> 4) & 0x0f, | |
845 | device & 0x0f, (device >> 12) & 0x0f, (device >> 8) & 0x0f); | |
846 | pnp_add_card_id(id, card); | |
1da177e4 LT |
847 | } |
848 | ||
849 | /* | |
850 | * Build device list for all present ISA PnP devices. | |
851 | */ | |
1da177e4 LT |
852 | static int __init isapnp_build_device_list(void) |
853 | { | |
854 | int csn; | |
855 | unsigned char header[9], checksum; | |
856 | struct pnp_card *card; | |
857 | ||
858 | isapnp_wait(); | |
859 | isapnp_key(); | |
860 | for (csn = 1; csn <= isapnp_csn_count; csn++) { | |
861 | isapnp_wake(csn); | |
862 | isapnp_peek(header, 9); | |
863 | checksum = isapnp_checksum(header); | |
864 | #if 0 | |
9dd78466 BH |
865 | printk(KERN_DEBUG |
866 | "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", | |
867 | header[0], header[1], header[2], header[3], header[4], | |
868 | header[5], header[6], header[7], header[8]); | |
1da177e4 LT |
869 | printk(KERN_DEBUG "checksum = 0x%x\n", checksum); |
870 | #endif | |
9dd78466 BH |
871 | if ((card = |
872 | kzalloc(sizeof(struct pnp_card), GFP_KERNEL)) == NULL) | |
1da177e4 LT |
873 | continue; |
874 | ||
875 | card->number = csn; | |
876 | INIT_LIST_HEAD(&card->devices); | |
9dd78466 BH |
877 | isapnp_parse_card_id(card, (header[1] << 8) | header[0], |
878 | (header[3] << 8) | header[2]); | |
879 | card->serial = | |
880 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | | |
881 | header[4]; | |
1da177e4 LT |
882 | isapnp_checksum_value = 0x00; |
883 | isapnp_parse_resource_map(card); | |
884 | if (isapnp_checksum_value != 0x00) | |
9dd78466 BH |
885 | printk(KERN_ERR |
886 | "isapnp: checksum for device %i is not valid (0x%x)\n", | |
887 | csn, isapnp_checksum_value); | |
1da177e4 LT |
888 | card->checksum = isapnp_checksum_value; |
889 | card->protocol = &isapnp_protocol; | |
890 | ||
891 | pnp_add_card(card); | |
892 | } | |
893 | isapnp_wait(); | |
894 | return 0; | |
895 | } | |
896 | ||
897 | /* | |
898 | * Basic configuration routines. | |
899 | */ | |
900 | ||
901 | int isapnp_present(void) | |
902 | { | |
903 | struct pnp_card *card; | |
07d4e9af | 904 | |
1da177e4 LT |
905 | pnp_for_each_card(card) { |
906 | if (card->protocol == &isapnp_protocol) | |
907 | return 1; | |
908 | } | |
909 | return 0; | |
910 | } | |
911 | ||
912 | int isapnp_cfg_begin(int csn, int logdev) | |
913 | { | |
914 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) | |
915 | return -EINVAL; | |
14cc3e2b | 916 | mutex_lock(&isapnp_cfg_mutex); |
1da177e4 LT |
917 | isapnp_wait(); |
918 | isapnp_key(); | |
919 | isapnp_wake(csn); | |
920 | #if 0 | |
921 | /* to avoid malfunction when the isapnptools package is used */ | |
922 | /* we must set RDP to our value again */ | |
923 | /* it is possible to set RDP only in the isolation phase */ | |
924 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ | |
925 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ | |
9dd78466 BH |
926 | mdelay(2); /* is this necessary? */ |
927 | isapnp_wake(csn); /* bring card into sleep state */ | |
928 | isapnp_wake(0); /* bring card into isolation state */ | |
929 | isapnp_set_rdp(); /* reset the RDP port */ | |
930 | udelay(1000); /* delay 1000us */ | |
1da177e4 | 931 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
9dd78466 | 932 | udelay(250); /* is this necessary? */ |
1da177e4 LT |
933 | #endif |
934 | if (logdev >= 0) | |
935 | isapnp_device(logdev); | |
936 | return 0; | |
937 | } | |
938 | ||
939 | int isapnp_cfg_end(void) | |
940 | { | |
941 | isapnp_wait(); | |
14cc3e2b | 942 | mutex_unlock(&isapnp_cfg_mutex); |
1da177e4 LT |
943 | return 0; |
944 | } | |
945 | ||
1da177e4 | 946 | /* |
07d4e9af | 947 | * Initialization. |
1da177e4 LT |
948 | */ |
949 | ||
1da177e4 LT |
950 | EXPORT_SYMBOL(isapnp_protocol); |
951 | EXPORT_SYMBOL(isapnp_present); | |
952 | EXPORT_SYMBOL(isapnp_cfg_begin); | |
953 | EXPORT_SYMBOL(isapnp_cfg_end); | |
1da177e4 LT |
954 | EXPORT_SYMBOL(isapnp_write_byte); |
955 | ||
9dd78466 BH |
956 | static int isapnp_read_resources(struct pnp_dev *dev, |
957 | struct pnp_resource_table *res) | |
1da177e4 LT |
958 | { |
959 | int tmp, ret; | |
960 | ||
961 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); | |
962 | if (dev->active) { | |
245073f0 | 963 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
1da177e4 LT |
964 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1)); |
965 | if (!ret) | |
966 | continue; | |
967 | res->port_resource[tmp].start = ret; | |
968 | res->port_resource[tmp].flags = IORESOURCE_IO; | |
969 | } | |
245073f0 | 970 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
9dd78466 BH |
971 | ret = |
972 | isapnp_read_word(ISAPNP_CFG_MEM + (tmp << 3)) << 8; | |
1da177e4 LT |
973 | if (!ret) |
974 | continue; | |
975 | res->mem_resource[tmp].start = ret; | |
976 | res->mem_resource[tmp].flags = IORESOURCE_MEM; | |
977 | } | |
245073f0 | 978 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
9dd78466 BH |
979 | ret = |
980 | (isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >> | |
981 | 8); | |
1da177e4 LT |
982 | if (!ret) |
983 | continue; | |
9dd78466 BH |
984 | res->irq_resource[tmp].start = |
985 | res->irq_resource[tmp].end = ret; | |
1da177e4 LT |
986 | res->irq_resource[tmp].flags = IORESOURCE_IRQ; |
987 | } | |
245073f0 | 988 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
1da177e4 LT |
989 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp); |
990 | if (ret == 4) | |
991 | continue; | |
9dd78466 BH |
992 | res->dma_resource[tmp].start = |
993 | res->dma_resource[tmp].end = ret; | |
1da177e4 LT |
994 | res->dma_resource[tmp].flags = IORESOURCE_DMA; |
995 | } | |
996 | } | |
997 | return 0; | |
998 | } | |
999 | ||
9dd78466 BH |
1000 | static int isapnp_get_resources(struct pnp_dev *dev, |
1001 | struct pnp_resource_table *res) | |
1da177e4 LT |
1002 | { |
1003 | int ret; | |
1e0aa9ad | 1004 | |
1da177e4 LT |
1005 | pnp_init_resource_table(res); |
1006 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1007 | ret = isapnp_read_resources(dev, res); | |
1008 | isapnp_cfg_end(); | |
1009 | return ret; | |
1010 | } | |
1011 | ||
9dd78466 BH |
1012 | static int isapnp_set_resources(struct pnp_dev *dev, |
1013 | struct pnp_resource_table *res) | |
1da177e4 LT |
1014 | { |
1015 | int tmp; | |
1016 | ||
1017 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1018 | dev->active = 1; | |
9dd78466 | 1019 | for (tmp = 0; |
245073f0 | 1020 | tmp < ISAPNP_MAX_PORT |
9dd78466 BH |
1021 | && (res->port_resource[tmp]. |
1022 | flags & (IORESOURCE_IO | IORESOURCE_UNSET)) == IORESOURCE_IO; | |
1023 | tmp++) | |
1024 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), | |
1025 | res->port_resource[tmp].start); | |
1026 | for (tmp = 0; | |
245073f0 | 1027 | tmp < ISAPNP_MAX_IRQ |
9dd78466 BH |
1028 | && (res->irq_resource[tmp]. |
1029 | flags & (IORESOURCE_IRQ | IORESOURCE_UNSET)) == IORESOURCE_IRQ; | |
1030 | tmp++) { | |
1da177e4 LT |
1031 | int irq = res->irq_resource[tmp].start; |
1032 | if (irq == 2) | |
1033 | irq = 9; | |
9dd78466 | 1034 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); |
1da177e4 | 1035 | } |
9dd78466 | 1036 | for (tmp = 0; |
245073f0 | 1037 | tmp < ISAPNP_MAX_DMA |
9dd78466 BH |
1038 | && (res->dma_resource[tmp]. |
1039 | flags & (IORESOURCE_DMA | IORESOURCE_UNSET)) == IORESOURCE_DMA; | |
1040 | tmp++) | |
1041 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, | |
1042 | res->dma_resource[tmp].start); | |
1043 | for (tmp = 0; | |
245073f0 | 1044 | tmp < ISAPNP_MAX_MEM |
9dd78466 BH |
1045 | && (res->mem_resource[tmp]. |
1046 | flags & (IORESOURCE_MEM | IORESOURCE_UNSET)) == IORESOURCE_MEM; | |
1047 | tmp++) | |
1048 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), | |
1049 | (res->mem_resource[tmp].start >> 8) & 0xffff); | |
1da177e4 LT |
1050 | /* FIXME: We aren't handling 32bit mems properly here */ |
1051 | isapnp_activate(dev->number); | |
1052 | isapnp_cfg_end(); | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | static int isapnp_disable_resources(struct pnp_dev *dev) | |
1057 | { | |
b1734913 | 1058 | if (!dev->active) |
1da177e4 LT |
1059 | return -EINVAL; |
1060 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1061 | isapnp_deactivate(dev->number); | |
1062 | dev->active = 0; | |
1063 | isapnp_cfg_end(); | |
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | struct pnp_protocol isapnp_protocol = { | |
9dd78466 BH |
1068 | .name = "ISA Plug and Play", |
1069 | .get = isapnp_get_resources, | |
1070 | .set = isapnp_set_resources, | |
1da177e4 LT |
1071 | .disable = isapnp_disable_resources, |
1072 | }; | |
1073 | ||
1074 | static int __init isapnp_init(void) | |
1075 | { | |
1076 | int cards; | |
1077 | struct pnp_card *card; | |
1078 | struct pnp_dev *dev; | |
1079 | ||
1080 | if (isapnp_disable) { | |
1da177e4 LT |
1081 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
1082 | return 0; | |
1083 | } | |
07bd1c4a DW |
1084 | #ifdef CONFIG_PPC_MERGE |
1085 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) | |
1086 | return -EINVAL; | |
1087 | #endif | |
1da177e4 LT |
1088 | #ifdef ISAPNP_REGION_OK |
1089 | if (!request_region(_PIDXR, 1, "isapnp index")) { | |
9dd78466 BH |
1090 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
1091 | _PIDXR); | |
1da177e4 LT |
1092 | return -EBUSY; |
1093 | } | |
1094 | #endif | |
1095 | if (!request_region(_PNPWRP, 1, "isapnp write")) { | |
9dd78466 BH |
1096 | printk(KERN_ERR |
1097 | "isapnp: Write Data Register 0x%x already used\n", | |
1098 | _PNPWRP); | |
1da177e4 LT |
1099 | #ifdef ISAPNP_REGION_OK |
1100 | release_region(_PIDXR, 1); | |
1101 | #endif | |
1102 | return -EBUSY; | |
1103 | } | |
1104 | ||
9dd78466 | 1105 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
1da177e4 LT |
1106 | return -EBUSY; |
1107 | ||
1108 | /* | |
9dd78466 BH |
1109 | * Print a message. The existing ISAPnP code is hanging machines |
1110 | * so let the user know where. | |
1da177e4 | 1111 | */ |
9dd78466 | 1112 | |
1da177e4 LT |
1113 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
1114 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { | |
1115 | isapnp_rdp |= 3; | |
1116 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { | |
9dd78466 BH |
1117 | printk(KERN_ERR |
1118 | "isapnp: Read Data Register 0x%x already used\n", | |
1119 | isapnp_rdp); | |
1da177e4 LT |
1120 | #ifdef ISAPNP_REGION_OK |
1121 | release_region(_PIDXR, 1); | |
1122 | #endif | |
1123 | release_region(_PNPWRP, 1); | |
1124 | return -EBUSY; | |
1125 | } | |
1126 | isapnp_set_rdp(); | |
1127 | } | |
1da177e4 LT |
1128 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
1129 | cards = isapnp_isolate(); | |
9dd78466 | 1130 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
1da177e4 LT |
1131 | #ifdef ISAPNP_REGION_OK |
1132 | release_region(_PIDXR, 1); | |
1133 | #endif | |
1134 | release_region(_PNPWRP, 1); | |
9dd78466 BH |
1135 | printk(KERN_INFO |
1136 | "isapnp: No Plug & Play device found\n"); | |
1da177e4 LT |
1137 | return 0; |
1138 | } | |
1139 | request_region(isapnp_rdp, 1, "isapnp read"); | |
1140 | } | |
1141 | isapnp_build_device_list(); | |
1142 | cards = 0; | |
1143 | ||
9dd78466 | 1144 | protocol_for_each_card(&isapnp_protocol, card) { |
1da177e4 LT |
1145 | cards++; |
1146 | if (isapnp_verbose) { | |
9dd78466 BH |
1147 | printk(KERN_INFO "isapnp: Card '%s'\n", |
1148 | card->name[0] ? card->name : "Unknown"); | |
1da177e4 LT |
1149 | if (isapnp_verbose < 2) |
1150 | continue; | |
9dd78466 BH |
1151 | card_for_each_dev(card, dev) { |
1152 | printk(KERN_INFO "isapnp: Device '%s'\n", | |
1153 | dev->name[0] ? dev->name : "Unknown"); | |
1da177e4 LT |
1154 | } |
1155 | } | |
1156 | } | |
1e0aa9ad | 1157 | if (cards) |
9dd78466 BH |
1158 | printk(KERN_INFO |
1159 | "isapnp: %i Plug & Play card%s detected total\n", cards, | |
1160 | cards > 1 ? "s" : ""); | |
1e0aa9ad | 1161 | else |
1da177e4 | 1162 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
1da177e4 LT |
1163 | |
1164 | isapnp_proc_init(); | |
1165 | return 0; | |
1166 | } | |
1167 | ||
1168 | device_initcall(isapnp_init); | |
1169 | ||
1170 | /* format is: noisapnp */ | |
1171 | ||
1172 | static int __init isapnp_setup_disable(char *str) | |
1173 | { | |
1174 | isapnp_disable = 1; | |
1175 | return 1; | |
1176 | } | |
1177 | ||
1178 | __setup("noisapnp", isapnp_setup_disable); | |
1179 | ||
1180 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ | |
1181 | ||
1182 | static int __init isapnp_setup_isapnp(char *str) | |
1183 | { | |
9dd78466 BH |
1184 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
1185 | (get_option(&str, &isapnp_reset) == 2) && | |
1186 | (get_option(&str, &isapnp_verbose) == 2)); | |
1da177e4 LT |
1187 | return 1; |
1188 | } | |
1189 | ||
1190 | __setup("isapnp=", isapnp_setup_isapnp); |