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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 LT |
419 | dev->regs = tmp[4]; |
420 | dev->card = card; | |
421 | if (size > 5) | |
422 | dev->regs |= tmp[5] << 8; | |
1da177e4 LT |
423 | dev->capabilities |= PNP_CONFIGURABLE; |
424 | dev->capabilities |= PNP_READ; | |
425 | dev->capabilities |= PNP_WRITE; | |
426 | dev->capabilities |= PNP_DISABLE; | |
f4490002 | 427 | pnp_init_resources(dev); |
1da177e4 LT |
428 | return dev; |
429 | } | |
430 | ||
1da177e4 LT |
431 | /* |
432 | * Add IRQ resource to resources list. | |
433 | */ | |
c1caf06c BH |
434 | static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, |
435 | struct pnp_option *option, | |
9dd78466 | 436 | int size) |
1da177e4 LT |
437 | { |
438 | unsigned char tmp[3]; | |
439 | struct pnp_irq *irq; | |
440 | unsigned long bits; | |
441 | ||
442 | isapnp_peek(tmp, size); | |
cd861280 | 443 | irq = kzalloc(sizeof(struct pnp_irq), GFP_KERNEL); |
1da177e4 LT |
444 | if (!irq) |
445 | return; | |
446 | bits = (tmp[1] << 8) | tmp[0]; | |
447 | bitmap_copy(irq->map, &bits, 16); | |
448 | if (size > 2) | |
449 | irq->flags = tmp[2]; | |
450 | else | |
451 | irq->flags = IORESOURCE_IRQ_HIGHEDGE; | |
c1caf06c | 452 | pnp_register_irq_resource(dev, option, irq); |
1da177e4 LT |
453 | } |
454 | ||
455 | /* | |
456 | * Add DMA resource to resources list. | |
457 | */ | |
c1caf06c BH |
458 | static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, |
459 | struct pnp_option *option, | |
9dd78466 | 460 | int size) |
1da177e4 LT |
461 | { |
462 | unsigned char tmp[2]; | |
463 | struct pnp_dma *dma; | |
464 | ||
465 | isapnp_peek(tmp, size); | |
cd861280 | 466 | dma = kzalloc(sizeof(struct pnp_dma), GFP_KERNEL); |
1da177e4 LT |
467 | if (!dma) |
468 | return; | |
469 | dma->map = tmp[0]; | |
470 | dma->flags = tmp[1]; | |
c1caf06c | 471 | pnp_register_dma_resource(dev, option, dma); |
1da177e4 LT |
472 | } |
473 | ||
474 | /* | |
475 | * Add port resource to resources list. | |
476 | */ | |
c1caf06c BH |
477 | static void __init isapnp_parse_port_resource(struct pnp_dev *dev, |
478 | struct pnp_option *option, | |
9dd78466 | 479 | int size) |
1da177e4 LT |
480 | { |
481 | unsigned char tmp[7]; | |
482 | struct pnp_port *port; | |
483 | ||
484 | isapnp_peek(tmp, size); | |
cd861280 | 485 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
486 | if (!port) |
487 | return; | |
488 | port->min = (tmp[2] << 8) | tmp[1]; | |
489 | port->max = (tmp[4] << 8) | tmp[3]; | |
490 | port->align = tmp[5]; | |
491 | port->size = tmp[6]; | |
492 | port->flags = tmp[0] ? PNP_PORT_FLAG_16BITADDR : 0; | |
c1caf06c | 493 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
494 | } |
495 | ||
496 | /* | |
497 | * Add fixed port resource to resources list. | |
498 | */ | |
c1caf06c BH |
499 | static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, |
500 | struct pnp_option *option, | |
9dd78466 | 501 | int size) |
1da177e4 LT |
502 | { |
503 | unsigned char tmp[3]; | |
504 | struct pnp_port *port; | |
505 | ||
506 | isapnp_peek(tmp, size); | |
cd861280 | 507 | port = kzalloc(sizeof(struct pnp_port), GFP_KERNEL); |
1da177e4 LT |
508 | if (!port) |
509 | return; | |
510 | port->min = port->max = (tmp[1] << 8) | tmp[0]; | |
511 | port->size = tmp[2]; | |
512 | port->align = 0; | |
513 | port->flags = PNP_PORT_FLAG_FIXED; | |
c1caf06c | 514 | pnp_register_port_resource(dev, option, port); |
1da177e4 LT |
515 | } |
516 | ||
517 | /* | |
518 | * Add memory resource to resources list. | |
519 | */ | |
c1caf06c BH |
520 | static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, |
521 | struct pnp_option *option, | |
9dd78466 | 522 | int size) |
1da177e4 LT |
523 | { |
524 | unsigned char tmp[9]; | |
525 | struct pnp_mem *mem; | |
526 | ||
527 | isapnp_peek(tmp, size); | |
cd861280 | 528 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
529 | if (!mem) |
530 | return; | |
531 | mem->min = ((tmp[2] << 8) | tmp[1]) << 8; | |
532 | mem->max = ((tmp[4] << 8) | tmp[3]) << 8; | |
533 | mem->align = (tmp[6] << 8) | tmp[5]; | |
534 | mem->size = ((tmp[8] << 8) | tmp[7]) << 8; | |
535 | mem->flags = tmp[0]; | |
c1caf06c | 536 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
537 | } |
538 | ||
539 | /* | |
540 | * Add 32-bit memory resource to resources list. | |
541 | */ | |
c1caf06c BH |
542 | static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, |
543 | struct pnp_option *option, | |
9dd78466 | 544 | int size) |
1da177e4 LT |
545 | { |
546 | unsigned char tmp[17]; | |
547 | struct pnp_mem *mem; | |
548 | ||
549 | isapnp_peek(tmp, size); | |
cd861280 | 550 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
551 | if (!mem) |
552 | return; | |
553 | mem->min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
554 | mem->max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; | |
9dd78466 BH |
555 | mem->align = |
556 | (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; | |
557 | mem->size = | |
558 | (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; | |
1da177e4 | 559 | mem->flags = tmp[0]; |
c1caf06c | 560 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
561 | } |
562 | ||
563 | /* | |
564 | * Add 32-bit fixed memory resource to resources list. | |
565 | */ | |
c1caf06c BH |
566 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, |
567 | struct pnp_option *option, | |
9dd78466 | 568 | int size) |
1da177e4 LT |
569 | { |
570 | unsigned char tmp[9]; | |
571 | struct pnp_mem *mem; | |
572 | ||
573 | isapnp_peek(tmp, size); | |
cd861280 | 574 | mem = kzalloc(sizeof(struct pnp_mem), GFP_KERNEL); |
1da177e4 LT |
575 | if (!mem) |
576 | return; | |
9dd78466 BH |
577 | mem->min = mem->max = |
578 | (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; | |
1da177e4 LT |
579 | mem->size = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; |
580 | mem->align = 0; | |
581 | mem->flags = tmp[0]; | |
c1caf06c | 582 | pnp_register_mem_resource(dev, option, mem); |
1da177e4 LT |
583 | } |
584 | ||
585 | /* | |
586 | * Parse card name for ISA PnP device. | |
9dd78466 | 587 | */ |
1da177e4 LT |
588 | static void __init |
589 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) | |
590 | { | |
591 | if (name[0] == '\0') { | |
9dd78466 BH |
592 | unsigned short size1 = |
593 | *size >= name_max ? (name_max - 1) : *size; | |
1da177e4 LT |
594 | isapnp_peek(name, size1); |
595 | name[size1] = '\0'; | |
596 | *size -= size1; | |
597 | ||
598 | /* clean whitespace from end of string */ | |
9dd78466 | 599 | while (size1 > 0 && name[--size1] == ' ') |
1da177e4 LT |
600 | name[size1] = '\0'; |
601 | } | |
602 | } | |
603 | ||
604 | /* | |
605 | * Parse resource map for logical device. | |
606 | */ | |
1da177e4 LT |
607 | static int __init isapnp_create_device(struct pnp_card *card, |
608 | unsigned short size) | |
609 | { | |
610 | int number = 0, skip = 0, priority = 0, compat = 0; | |
611 | unsigned char type, tmp[17]; | |
612 | struct pnp_option *option; | |
613 | struct pnp_dev *dev; | |
25eb8461 BH |
614 | u32 eisa_id; |
615 | char id[8]; | |
07d4e9af | 616 | |
1da177e4 LT |
617 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
618 | return 1; | |
619 | option = pnp_register_independent_option(dev); | |
620 | if (!option) { | |
621 | kfree(dev); | |
622 | return 1; | |
623 | } | |
9dd78466 | 624 | pnp_add_card_device(card, dev); |
1da177e4 LT |
625 | |
626 | while (1) { | |
9dd78466 | 627 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
628 | return 1; |
629 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) | |
630 | goto __skip; | |
631 | switch (type) { | |
632 | case _STAG_LOGDEVID: | |
633 | if (size >= 5 && size <= 6) { | |
9dd78466 BH |
634 | if ((dev = |
635 | isapnp_parse_device(card, size, | |
636 | number++)) == NULL) | |
1da177e4 LT |
637 | return 1; |
638 | size = 0; | |
639 | skip = 0; | |
640 | option = pnp_register_independent_option(dev); | |
656bde57 JJ |
641 | if (!option) { |
642 | kfree(dev); | |
1da177e4 | 643 | return 1; |
656bde57 | 644 | } |
9dd78466 | 645 | pnp_add_card_device(card, dev); |
1da177e4 LT |
646 | } else { |
647 | skip = 1; | |
648 | } | |
649 | priority = 0; | |
650 | compat = 0; | |
651 | break; | |
652 | case _STAG_COMPATDEVID: | |
653 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { | |
654 | isapnp_peek(tmp, 4); | |
25eb8461 BH |
655 | eisa_id = tmp[0] | tmp[1] << 8 | |
656 | tmp[2] << 16 | tmp[3] << 24; | |
657 | pnp_eisa_id_to_string(eisa_id, id); | |
658 | pnp_add_id(dev, id); | |
1da177e4 LT |
659 | compat++; |
660 | size = 0; | |
661 | } | |
662 | break; | |
663 | case _STAG_IRQ: | |
664 | if (size < 2 || size > 3) | |
665 | goto __skip; | |
c1caf06c | 666 | isapnp_parse_irq_resource(dev, option, size); |
1da177e4 LT |
667 | size = 0; |
668 | break; | |
669 | case _STAG_DMA: | |
670 | if (size != 2) | |
671 | goto __skip; | |
c1caf06c | 672 | isapnp_parse_dma_resource(dev, option, size); |
1da177e4 LT |
673 | size = 0; |
674 | break; | |
675 | case _STAG_STARTDEP: | |
676 | if (size > 1) | |
677 | goto __skip; | |
678 | priority = 0x100 | PNP_RES_PRIORITY_ACCEPTABLE; | |
679 | if (size > 0) { | |
680 | isapnp_peek(tmp, size); | |
681 | priority = 0x100 | tmp[0]; | |
682 | size = 0; | |
683 | } | |
9dd78466 | 684 | option = pnp_register_dependent_option(dev, priority); |
1da177e4 LT |
685 | if (!option) |
686 | return 1; | |
687 | break; | |
688 | case _STAG_ENDDEP: | |
689 | if (size != 0) | |
690 | goto __skip; | |
691 | priority = 0; | |
c1caf06c | 692 | dev_dbg(&dev->dev, "end dependent options\n"); |
1da177e4 LT |
693 | break; |
694 | case _STAG_IOPORT: | |
695 | if (size != 7) | |
696 | goto __skip; | |
c1caf06c | 697 | isapnp_parse_port_resource(dev, option, size); |
1da177e4 LT |
698 | size = 0; |
699 | break; | |
700 | case _STAG_FIXEDIO: | |
701 | if (size != 3) | |
702 | goto __skip; | |
c1caf06c | 703 | isapnp_parse_fixed_port_resource(dev, option, size); |
1da177e4 LT |
704 | size = 0; |
705 | break; | |
706 | case _STAG_VENDOR: | |
707 | break; | |
708 | case _LTAG_MEMRANGE: | |
709 | if (size != 9) | |
710 | goto __skip; | |
c1caf06c | 711 | isapnp_parse_mem_resource(dev, option, size); |
1da177e4 LT |
712 | size = 0; |
713 | break; | |
714 | case _LTAG_ANSISTR: | |
715 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); | |
716 | break; | |
717 | case _LTAG_UNICODESTR: | |
718 | /* silently ignore */ | |
719 | /* who use unicode for hardware identification? */ | |
720 | break; | |
721 | case _LTAG_VENDOR: | |
722 | break; | |
723 | case _LTAG_MEM32RANGE: | |
724 | if (size != 17) | |
725 | goto __skip; | |
c1caf06c | 726 | isapnp_parse_mem32_resource(dev, option, size); |
1da177e4 LT |
727 | size = 0; |
728 | break; | |
729 | case _LTAG_FIXEDMEM32RANGE: | |
730 | if (size != 9) | |
731 | goto __skip; | |
c1caf06c | 732 | isapnp_parse_fixed_mem32_resource(dev, option, size); |
1da177e4 LT |
733 | size = 0; |
734 | break; | |
735 | case _STAG_END: | |
736 | if (size > 0) | |
737 | isapnp_skip_bytes(size); | |
738 | return 1; | |
739 | default: | |
af11cb2d BH |
740 | dev_err(&dev->dev, "unknown tag %#x (card %i), " |
741 | "ignored\n", type, card->number); | |
1da177e4 | 742 | } |
1e0aa9ad | 743 | __skip: |
9dd78466 BH |
744 | if (size > 0) |
745 | isapnp_skip_bytes(size); | |
1da177e4 LT |
746 | } |
747 | return 0; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Parse resource map for ISA PnP card. | |
752 | */ | |
1da177e4 LT |
753 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
754 | { | |
755 | unsigned char type, tmp[17]; | |
756 | unsigned short size; | |
757 | ||
758 | while (1) { | |
9dd78466 | 759 | if (isapnp_read_tag(&type, &size) < 0) |
1da177e4 LT |
760 | return; |
761 | switch (type) { | |
762 | case _STAG_PNPVERNO: | |
763 | if (size != 2) | |
764 | goto __skip; | |
765 | isapnp_peek(tmp, 2); | |
766 | card->pnpver = tmp[0]; | |
767 | card->productver = tmp[1]; | |
768 | size = 0; | |
769 | break; | |
770 | case _STAG_LOGDEVID: | |
771 | if (size >= 5 && size <= 6) { | |
9dd78466 | 772 | if (isapnp_create_device(card, size) == 1) |
1da177e4 LT |
773 | return; |
774 | size = 0; | |
775 | } | |
776 | break; | |
777 | case _STAG_VENDOR: | |
778 | break; | |
779 | case _LTAG_ANSISTR: | |
9dd78466 BH |
780 | isapnp_parse_name(card->name, sizeof(card->name), |
781 | &size); | |
1da177e4 LT |
782 | break; |
783 | case _LTAG_UNICODESTR: | |
784 | /* silently ignore */ | |
785 | /* who use unicode for hardware identification? */ | |
786 | break; | |
787 | case _LTAG_VENDOR: | |
788 | break; | |
789 | case _STAG_END: | |
790 | if (size > 0) | |
791 | isapnp_skip_bytes(size); | |
792 | return; | |
793 | default: | |
af11cb2d BH |
794 | dev_err(&card->dev, "unknown tag %#x, ignored\n", |
795 | type); | |
1da177e4 | 796 | } |
1e0aa9ad | 797 | __skip: |
9dd78466 BH |
798 | if (size > 0) |
799 | isapnp_skip_bytes(size); | |
1da177e4 LT |
800 | } |
801 | } | |
802 | ||
803 | /* | |
804 | * Compute ISA PnP checksum for first eight bytes. | |
805 | */ | |
1da177e4 LT |
806 | static unsigned char __init isapnp_checksum(unsigned char *data) |
807 | { | |
808 | int i, j; | |
809 | unsigned char checksum = 0x6a, bit, b; | |
810 | ||
811 | for (i = 0; i < 8; i++) { | |
812 | b = data[i]; | |
813 | for (j = 0; j < 8; j++) { | |
814 | bit = 0; | |
815 | if (b & (1 << j)) | |
816 | bit = 1; | |
9dd78466 BH |
817 | checksum = |
818 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) | |
819 | | (checksum >> 1); | |
1da177e4 LT |
820 | } |
821 | } | |
822 | return checksum; | |
823 | } | |
824 | ||
1da177e4 LT |
825 | /* |
826 | * Build device list for all present ISA PnP devices. | |
827 | */ | |
1da177e4 LT |
828 | static int __init isapnp_build_device_list(void) |
829 | { | |
830 | int csn; | |
831 | unsigned char header[9], checksum; | |
832 | struct pnp_card *card; | |
068076d5 BH |
833 | u32 eisa_id; |
834 | char id[8]; | |
1da177e4 LT |
835 | |
836 | isapnp_wait(); | |
837 | isapnp_key(); | |
838 | for (csn = 1; csn <= isapnp_csn_count; csn++) { | |
839 | isapnp_wake(csn); | |
840 | isapnp_peek(header, 9); | |
841 | checksum = isapnp_checksum(header); | |
068076d5 BH |
842 | eisa_id = header[0] | header[1] << 8 | |
843 | header[2] << 16 | header[3] << 24; | |
844 | pnp_eisa_id_to_string(eisa_id, id); | |
6bf2aab2 BH |
845 | card = pnp_alloc_card(&isapnp_protocol, csn, id); |
846 | if (!card) | |
847 | continue; | |
848 | ||
af11cb2d BH |
849 | #if 0 |
850 | dev_info(&card->dev, | |
851 | "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", | |
852 | header[0], header[1], header[2], header[3], header[4], | |
853 | header[5], header[6], header[7], header[8]); | |
854 | dev_info(&card->dev, "checksum = %#x\n", checksum); | |
855 | #endif | |
6bf2aab2 | 856 | INIT_LIST_HEAD(&card->devices); |
9dd78466 BH |
857 | card->serial = |
858 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | | |
859 | header[4]; | |
1da177e4 LT |
860 | isapnp_checksum_value = 0x00; |
861 | isapnp_parse_resource_map(card); | |
862 | if (isapnp_checksum_value != 0x00) | |
af11cb2d BH |
863 | dev_err(&card->dev, "invalid checksum %#x\n", |
864 | isapnp_checksum_value); | |
1da177e4 | 865 | card->checksum = isapnp_checksum_value; |
1da177e4 LT |
866 | |
867 | pnp_add_card(card); | |
868 | } | |
869 | isapnp_wait(); | |
870 | return 0; | |
871 | } | |
872 | ||
873 | /* | |
874 | * Basic configuration routines. | |
875 | */ | |
876 | ||
877 | int isapnp_present(void) | |
878 | { | |
879 | struct pnp_card *card; | |
07d4e9af | 880 | |
1da177e4 LT |
881 | pnp_for_each_card(card) { |
882 | if (card->protocol == &isapnp_protocol) | |
883 | return 1; | |
884 | } | |
885 | return 0; | |
886 | } | |
887 | ||
888 | int isapnp_cfg_begin(int csn, int logdev) | |
889 | { | |
890 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) | |
891 | return -EINVAL; | |
14cc3e2b | 892 | mutex_lock(&isapnp_cfg_mutex); |
1da177e4 LT |
893 | isapnp_wait(); |
894 | isapnp_key(); | |
895 | isapnp_wake(csn); | |
896 | #if 0 | |
897 | /* to avoid malfunction when the isapnptools package is used */ | |
898 | /* we must set RDP to our value again */ | |
899 | /* it is possible to set RDP only in the isolation phase */ | |
900 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ | |
901 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ | |
9dd78466 BH |
902 | mdelay(2); /* is this necessary? */ |
903 | isapnp_wake(csn); /* bring card into sleep state */ | |
904 | isapnp_wake(0); /* bring card into isolation state */ | |
905 | isapnp_set_rdp(); /* reset the RDP port */ | |
906 | udelay(1000); /* delay 1000us */ | |
1da177e4 | 907 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
9dd78466 | 908 | udelay(250); /* is this necessary? */ |
1da177e4 LT |
909 | #endif |
910 | if (logdev >= 0) | |
911 | isapnp_device(logdev); | |
912 | return 0; | |
913 | } | |
914 | ||
915 | int isapnp_cfg_end(void) | |
916 | { | |
917 | isapnp_wait(); | |
14cc3e2b | 918 | mutex_unlock(&isapnp_cfg_mutex); |
1da177e4 LT |
919 | return 0; |
920 | } | |
921 | ||
1da177e4 | 922 | /* |
07d4e9af | 923 | * Initialization. |
1da177e4 LT |
924 | */ |
925 | ||
1da177e4 LT |
926 | EXPORT_SYMBOL(isapnp_protocol); |
927 | EXPORT_SYMBOL(isapnp_present); | |
928 | EXPORT_SYMBOL(isapnp_cfg_begin); | |
929 | EXPORT_SYMBOL(isapnp_cfg_end); | |
1da177e4 LT |
930 | EXPORT_SYMBOL(isapnp_write_byte); |
931 | ||
4ab55d8d | 932 | static int isapnp_read_resources(struct pnp_dev *dev) |
1da177e4 | 933 | { |
02d83b5d | 934 | struct pnp_resource_table *res = dev->res; |
1da177e4 LT |
935 | int tmp, ret; |
936 | ||
937 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); | |
938 | if (dev->active) { | |
245073f0 | 939 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
1da177e4 LT |
940 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (tmp << 1)); |
941 | if (!ret) | |
942 | continue; | |
943 | res->port_resource[tmp].start = ret; | |
944 | res->port_resource[tmp].flags = IORESOURCE_IO; | |
945 | } | |
245073f0 | 946 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
9dd78466 BH |
947 | ret = |
948 | isapnp_read_word(ISAPNP_CFG_MEM + (tmp << 3)) << 8; | |
1da177e4 LT |
949 | if (!ret) |
950 | continue; | |
951 | res->mem_resource[tmp].start = ret; | |
952 | res->mem_resource[tmp].flags = IORESOURCE_MEM; | |
953 | } | |
245073f0 | 954 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
9dd78466 BH |
955 | ret = |
956 | (isapnp_read_word(ISAPNP_CFG_IRQ + (tmp << 1)) >> | |
957 | 8); | |
1da177e4 LT |
958 | if (!ret) |
959 | continue; | |
9dd78466 BH |
960 | res->irq_resource[tmp].start = |
961 | res->irq_resource[tmp].end = ret; | |
1da177e4 LT |
962 | res->irq_resource[tmp].flags = IORESOURCE_IRQ; |
963 | } | |
245073f0 | 964 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
1da177e4 LT |
965 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + tmp); |
966 | if (ret == 4) | |
967 | continue; | |
9dd78466 BH |
968 | res->dma_resource[tmp].start = |
969 | res->dma_resource[tmp].end = ret; | |
1da177e4 LT |
970 | res->dma_resource[tmp].flags = IORESOURCE_DMA; |
971 | } | |
972 | } | |
973 | return 0; | |
974 | } | |
975 | ||
59284cb4 | 976 | static int isapnp_get_resources(struct pnp_dev *dev) |
1da177e4 LT |
977 | { |
978 | int ret; | |
1e0aa9ad | 979 | |
72dcc883 | 980 | dev_dbg(&dev->dev, "get resources\n"); |
f4490002 | 981 | pnp_init_resources(dev); |
1da177e4 | 982 | isapnp_cfg_begin(dev->card->number, dev->number); |
4ab55d8d | 983 | ret = isapnp_read_resources(dev); |
1da177e4 LT |
984 | isapnp_cfg_end(); |
985 | return ret; | |
986 | } | |
987 | ||
59284cb4 | 988 | static int isapnp_set_resources(struct pnp_dev *dev) |
1da177e4 | 989 | { |
02d83b5d | 990 | struct pnp_resource_table *res = dev->res; |
1da177e4 LT |
991 | int tmp; |
992 | ||
72dcc883 | 993 | dev_dbg(&dev->dev, "set resources\n"); |
1da177e4 LT |
994 | isapnp_cfg_begin(dev->card->number, dev->number); |
995 | dev->active = 1; | |
9dd78466 | 996 | for (tmp = 0; |
245073f0 | 997 | tmp < ISAPNP_MAX_PORT |
9dd78466 BH |
998 | && (res->port_resource[tmp]. |
999 | flags & (IORESOURCE_IO | IORESOURCE_UNSET)) == IORESOURCE_IO; | |
72dcc883 BH |
1000 | tmp++) { |
1001 | dev_dbg(&dev->dev, " set io %d to %#llx\n", | |
1002 | tmp, (unsigned long long) res->port_resource[tmp].start); | |
9dd78466 BH |
1003 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), |
1004 | res->port_resource[tmp].start); | |
72dcc883 | 1005 | } |
9dd78466 | 1006 | for (tmp = 0; |
245073f0 | 1007 | tmp < ISAPNP_MAX_IRQ |
9dd78466 BH |
1008 | && (res->irq_resource[tmp]. |
1009 | flags & (IORESOURCE_IRQ | IORESOURCE_UNSET)) == IORESOURCE_IRQ; | |
1010 | tmp++) { | |
1da177e4 LT |
1011 | int irq = res->irq_resource[tmp].start; |
1012 | if (irq == 2) | |
1013 | irq = 9; | |
72dcc883 | 1014 | dev_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); |
9dd78466 | 1015 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); |
1da177e4 | 1016 | } |
9dd78466 | 1017 | for (tmp = 0; |
245073f0 | 1018 | tmp < ISAPNP_MAX_DMA |
9dd78466 BH |
1019 | && (res->dma_resource[tmp]. |
1020 | flags & (IORESOURCE_DMA | IORESOURCE_UNSET)) == IORESOURCE_DMA; | |
72dcc883 BH |
1021 | tmp++) { |
1022 | dev_dbg(&dev->dev, " set dma %d to %lld\n", | |
1023 | tmp, (unsigned long long) res->dma_resource[tmp].start); | |
9dd78466 BH |
1024 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, |
1025 | res->dma_resource[tmp].start); | |
72dcc883 | 1026 | } |
9dd78466 | 1027 | for (tmp = 0; |
245073f0 | 1028 | tmp < ISAPNP_MAX_MEM |
9dd78466 BH |
1029 | && (res->mem_resource[tmp]. |
1030 | flags & (IORESOURCE_MEM | IORESOURCE_UNSET)) == IORESOURCE_MEM; | |
72dcc883 BH |
1031 | tmp++) { |
1032 | dev_dbg(&dev->dev, " set mem %d to %#llx\n", | |
1033 | tmp, (unsigned long long) res->mem_resource[tmp].start); | |
9dd78466 BH |
1034 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), |
1035 | (res->mem_resource[tmp].start >> 8) & 0xffff); | |
72dcc883 | 1036 | } |
1da177e4 LT |
1037 | /* FIXME: We aren't handling 32bit mems properly here */ |
1038 | isapnp_activate(dev->number); | |
1039 | isapnp_cfg_end(); | |
1040 | return 0; | |
1041 | } | |
1042 | ||
1043 | static int isapnp_disable_resources(struct pnp_dev *dev) | |
1044 | { | |
b1734913 | 1045 | if (!dev->active) |
1da177e4 LT |
1046 | return -EINVAL; |
1047 | isapnp_cfg_begin(dev->card->number, dev->number); | |
1048 | isapnp_deactivate(dev->number); | |
1049 | dev->active = 0; | |
1050 | isapnp_cfg_end(); | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | struct pnp_protocol isapnp_protocol = { | |
9dd78466 BH |
1055 | .name = "ISA Plug and Play", |
1056 | .get = isapnp_get_resources, | |
1057 | .set = isapnp_set_resources, | |
1da177e4 LT |
1058 | .disable = isapnp_disable_resources, |
1059 | }; | |
1060 | ||
1061 | static int __init isapnp_init(void) | |
1062 | { | |
1063 | int cards; | |
1064 | struct pnp_card *card; | |
1065 | struct pnp_dev *dev; | |
1066 | ||
1067 | if (isapnp_disable) { | |
1da177e4 LT |
1068 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
1069 | return 0; | |
1070 | } | |
07bd1c4a DW |
1071 | #ifdef CONFIG_PPC_MERGE |
1072 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) | |
1073 | return -EINVAL; | |
1074 | #endif | |
1da177e4 LT |
1075 | #ifdef ISAPNP_REGION_OK |
1076 | if (!request_region(_PIDXR, 1, "isapnp index")) { | |
9dd78466 BH |
1077 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
1078 | _PIDXR); | |
1da177e4 LT |
1079 | return -EBUSY; |
1080 | } | |
1081 | #endif | |
1082 | if (!request_region(_PNPWRP, 1, "isapnp write")) { | |
9dd78466 BH |
1083 | printk(KERN_ERR |
1084 | "isapnp: Write Data Register 0x%x already used\n", | |
1085 | _PNPWRP); | |
1da177e4 LT |
1086 | #ifdef ISAPNP_REGION_OK |
1087 | release_region(_PIDXR, 1); | |
1088 | #endif | |
1089 | return -EBUSY; | |
1090 | } | |
1091 | ||
9dd78466 | 1092 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
1da177e4 LT |
1093 | return -EBUSY; |
1094 | ||
1095 | /* | |
9dd78466 BH |
1096 | * Print a message. The existing ISAPnP code is hanging machines |
1097 | * so let the user know where. | |
1da177e4 | 1098 | */ |
9dd78466 | 1099 | |
1da177e4 LT |
1100 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
1101 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { | |
1102 | isapnp_rdp |= 3; | |
1103 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { | |
9dd78466 BH |
1104 | printk(KERN_ERR |
1105 | "isapnp: Read Data Register 0x%x already used\n", | |
1106 | isapnp_rdp); | |
1da177e4 LT |
1107 | #ifdef ISAPNP_REGION_OK |
1108 | release_region(_PIDXR, 1); | |
1109 | #endif | |
1110 | release_region(_PNPWRP, 1); | |
1111 | return -EBUSY; | |
1112 | } | |
1113 | isapnp_set_rdp(); | |
1114 | } | |
1da177e4 LT |
1115 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
1116 | cards = isapnp_isolate(); | |
9dd78466 | 1117 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
1da177e4 LT |
1118 | #ifdef ISAPNP_REGION_OK |
1119 | release_region(_PIDXR, 1); | |
1120 | #endif | |
1121 | release_region(_PNPWRP, 1); | |
9dd78466 BH |
1122 | printk(KERN_INFO |
1123 | "isapnp: No Plug & Play device found\n"); | |
1da177e4 LT |
1124 | return 0; |
1125 | } | |
1126 | request_region(isapnp_rdp, 1, "isapnp read"); | |
1127 | } | |
1128 | isapnp_build_device_list(); | |
1129 | cards = 0; | |
1130 | ||
9dd78466 | 1131 | protocol_for_each_card(&isapnp_protocol, card) { |
1da177e4 LT |
1132 | cards++; |
1133 | if (isapnp_verbose) { | |
af11cb2d BH |
1134 | dev_info(&card->dev, "card '%s'\n", |
1135 | card->name[0] ? card->name : "unknown"); | |
1da177e4 LT |
1136 | if (isapnp_verbose < 2) |
1137 | continue; | |
9dd78466 | 1138 | card_for_each_dev(card, dev) { |
af11cb2d BH |
1139 | dev_info(&card->dev, "device '%s'\n", |
1140 | dev->name[0] ? dev->name : "unknown"); | |
1da177e4 LT |
1141 | } |
1142 | } | |
1143 | } | |
1e0aa9ad | 1144 | if (cards) |
9dd78466 BH |
1145 | printk(KERN_INFO |
1146 | "isapnp: %i Plug & Play card%s detected total\n", cards, | |
1147 | cards > 1 ? "s" : ""); | |
1e0aa9ad | 1148 | else |
1da177e4 | 1149 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
1da177e4 LT |
1150 | |
1151 | isapnp_proc_init(); | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | device_initcall(isapnp_init); | |
1156 | ||
1157 | /* format is: noisapnp */ | |
1158 | ||
1159 | static int __init isapnp_setup_disable(char *str) | |
1160 | { | |
1161 | isapnp_disable = 1; | |
1162 | return 1; | |
1163 | } | |
1164 | ||
1165 | __setup("noisapnp", isapnp_setup_disable); | |
1166 | ||
1167 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ | |
1168 | ||
1169 | static int __init isapnp_setup_isapnp(char *str) | |
1170 | { | |
9dd78466 BH |
1171 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
1172 | (get_option(&str, &isapnp_reset) == 2) && | |
1173 | (get_option(&str, &isapnp_verbose) == 2)); | |
1da177e4 LT |
1174 | return 1; |
1175 | } | |
1176 | ||
1177 | __setup("isapnp=", isapnp_setup_isapnp); |