Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ISA Plug & Play support |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 44 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <asm/io.h> |
| 46 | |
Bjorn Helgaas | 772defc | 2008-04-28 16:33:52 -0600 | [diff] [blame] | 47 | #include "../base.h" |
| 48 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #if 0 |
| 50 | #define ISAPNP_REGION_OK |
| 51 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 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 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 58 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Bjorn Helgaas | ca0e8b6 | 2008-04-28 16:33:49 -0600 | [diff] [blame] | 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 | |
Bjorn Helgaas | 245073f | 2008-03-21 12:08:37 -0600 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | static unsigned char isapnp_checksum_value; |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 111 | static DEFINE_MUTEX(isapnp_cfg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 144 | val = (val << 8) + isapnp_read_byte(idx + 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 157 | isapnp_write_byte(idx + 1, val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | } |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 211 | unsigned char d = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 238 | |
| 239 | if (old_rdp) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | release_region(old_rdp, 1); |
| 241 | old_rdp = 0; |
| 242 | } |
| 243 | while (rdp <= 0x3ff) { |
| 244 | /* |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 245 | * We cannot use NE2000 probe spaces for ISAPnP or we |
| 246 | * will lock up machines. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 248 | if ((rdp < 0x280 || rdp > 0x380) |
| 249 | && request_region(rdp, 1, "ISAPnP")) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 320 | checksum = |
| 321 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) |
| 322 | | (checksum >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | } |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 353 | __next: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 373 | if (tag == 0) /* invalid tag */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 384 | printk(KERN_DEBUG "tag = 0x%x, type = 0x%x, size = %i\n", tag, *type, |
| 385 | *size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | static void __init isapnp_skip_bytes(int count) |
| 396 | { |
| 397 | isapnp_peek(NULL, count); |
| 398 | } |
| 399 | |
| 400 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | * Parse logical device tag. |
| 402 | */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 403 | static struct pnp_dev *__init isapnp_parse_device(struct pnp_card *card, |
| 404 | int size, int number) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | { |
| 406 | unsigned char tmp[6]; |
| 407 | struct pnp_dev *dev; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 408 | u32 eisa_id; |
| 409 | char id[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | isapnp_peek(tmp, size); |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 412 | eisa_id = tmp[0] | tmp[1] << 8 | tmp[2] << 16 | tmp[3] << 24; |
| 413 | pnp_eisa_id_to_string(eisa_id, id); |
Bjorn Helgaas | bda1e4e | 2008-04-28 16:33:54 -0600 | [diff] [blame] | 414 | |
| 415 | dev = pnp_alloc_dev(&isapnp_protocol, number, id); |
| 416 | if (!dev) |
| 417 | return NULL; |
| 418 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | dev->card = card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | dev->capabilities |= PNP_CONFIGURABLE; |
| 421 | dev->capabilities |= PNP_READ; |
| 422 | dev->capabilities |= PNP_WRITE; |
| 423 | dev->capabilities |= PNP_DISABLE; |
Bjorn Helgaas | f449000 | 2008-04-28 16:34:09 -0600 | [diff] [blame] | 424 | pnp_init_resources(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | return dev; |
| 426 | } |
| 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | /* |
| 429 | * Add IRQ resource to resources list. |
| 430 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 431 | static void __init isapnp_parse_irq_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 432 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 433 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | { |
| 435 | unsigned char tmp[3]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | unsigned long bits; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 437 | pnp_irq_mask_t map; |
| 438 | unsigned char flags = IORESOURCE_IRQ_HIGHEDGE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | isapnp_peek(tmp, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | bits = (tmp[1] << 8) | tmp[0]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 442 | |
| 443 | bitmap_zero(map.bits, PNP_IRQ_NR); |
| 444 | bitmap_copy(map.bits, &bits, 16); |
| 445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | if (size > 2) |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 447 | flags = tmp[2]; |
| 448 | |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 449 | pnp_register_irq_resource(dev, option_flags, &map, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Add DMA resource to resources list. |
| 454 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 455 | static void __init isapnp_parse_dma_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 456 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 457 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | { |
| 459 | unsigned char tmp[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
| 461 | isapnp_peek(tmp, size); |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 462 | pnp_register_dma_resource(dev, option_flags, tmp[0], tmp[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 463 | } |
| 464 | |
| 465 | /* |
| 466 | * Add port resource to resources list. |
| 467 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 468 | static void __init isapnp_parse_port_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 469 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 470 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | { |
| 472 | unsigned char tmp[7]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 473 | resource_size_t min, max, align, len; |
| 474 | unsigned char flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | isapnp_peek(tmp, size); |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 477 | min = (tmp[2] << 8) | tmp[1]; |
| 478 | max = (tmp[4] << 8) | tmp[3]; |
| 479 | align = tmp[5]; |
| 480 | len = tmp[6]; |
| 481 | flags = tmp[0] ? IORESOURCE_IO_16BIT_ADDR : 0; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 482 | pnp_register_port_resource(dev, option_flags, |
| 483 | min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | /* |
| 487 | * Add fixed port resource to resources list. |
| 488 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 489 | static void __init isapnp_parse_fixed_port_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 490 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 491 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
| 493 | unsigned char tmp[3]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 494 | resource_size_t base, len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | |
| 496 | isapnp_peek(tmp, size); |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 497 | base = (tmp[1] << 8) | tmp[0]; |
| 498 | len = tmp[2]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 499 | pnp_register_port_resource(dev, option_flags, base, base, 0, len, |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 500 | IORESOURCE_IO_FIXED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | /* |
| 504 | * Add memory resource to resources list. |
| 505 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 506 | static void __init isapnp_parse_mem_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 507 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 508 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
| 510 | unsigned char tmp[9]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 511 | resource_size_t min, max, align, len; |
| 512 | unsigned char flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 513 | |
| 514 | isapnp_peek(tmp, size); |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 515 | min = ((tmp[2] << 8) | tmp[1]) << 8; |
| 516 | max = ((tmp[4] << 8) | tmp[3]) << 8; |
| 517 | align = (tmp[6] << 8) | tmp[5]; |
| 518 | len = ((tmp[8] << 8) | tmp[7]) << 8; |
| 519 | flags = tmp[0]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 520 | pnp_register_mem_resource(dev, option_flags, |
| 521 | min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | } |
| 523 | |
| 524 | /* |
| 525 | * Add 32-bit memory resource to resources list. |
| 526 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 527 | static void __init isapnp_parse_mem32_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 528 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 529 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | { |
| 531 | unsigned char tmp[17]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 532 | resource_size_t min, max, align, len; |
| 533 | unsigned char flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | isapnp_peek(tmp, size); |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 536 | min = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
| 537 | max = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; |
| 538 | align = (tmp[12] << 24) | (tmp[11] << 16) | (tmp[10] << 8) | tmp[9]; |
| 539 | len = (tmp[16] << 24) | (tmp[15] << 16) | (tmp[14] << 8) | tmp[13]; |
| 540 | flags = tmp[0]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 541 | pnp_register_mem_resource(dev, option_flags, |
| 542 | min, max, align, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | /* |
| 546 | * Add 32-bit fixed memory resource to resources list. |
| 547 | */ |
Bjorn Helgaas | c1caf06 | 2008-04-28 16:34:04 -0600 | [diff] [blame] | 548 | static void __init isapnp_parse_fixed_mem32_resource(struct pnp_dev *dev, |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 549 | unsigned int option_flags, |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 550 | int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | { |
| 552 | unsigned char tmp[9]; |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 553 | resource_size_t base, len; |
| 554 | unsigned char flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | |
| 556 | isapnp_peek(tmp, size); |
Bjorn Helgaas | c227536 | 2008-06-27 16:57:11 -0600 | [diff] [blame] | 557 | base = (tmp[4] << 24) | (tmp[3] << 16) | (tmp[2] << 8) | tmp[1]; |
| 558 | len = (tmp[8] << 24) | (tmp[7] << 16) | (tmp[6] << 8) | tmp[5]; |
| 559 | flags = tmp[0]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 560 | pnp_register_mem_resource(dev, option_flags, base, base, 0, len, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | /* |
| 564 | * Parse card name for ISA PnP device. |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 565 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | static void __init |
| 567 | isapnp_parse_name(char *name, unsigned int name_max, unsigned short *size) |
| 568 | { |
| 569 | if (name[0] == '\0') { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 570 | unsigned short size1 = |
| 571 | *size >= name_max ? (name_max - 1) : *size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | isapnp_peek(name, size1); |
| 573 | name[size1] = '\0'; |
| 574 | *size -= size1; |
| 575 | |
| 576 | /* clean whitespace from end of string */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 577 | while (size1 > 0 && name[--size1] == ' ') |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | name[size1] = '\0'; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | /* |
| 583 | * Parse resource map for logical device. |
| 584 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | static int __init isapnp_create_device(struct pnp_card *card, |
| 586 | unsigned short size) |
| 587 | { |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 588 | int number = 0, skip = 0, priority, compat = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | unsigned char type, tmp[17]; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 590 | unsigned int option_flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | struct pnp_dev *dev; |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 592 | u32 eisa_id; |
| 593 | char id[8]; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 594 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | if ((dev = isapnp_parse_device(card, size, number++)) == NULL) |
| 596 | return 1; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 597 | option_flags = 0; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 598 | pnp_add_card_device(card, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
| 600 | while (1) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 601 | if (isapnp_read_tag(&type, &size) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | return 1; |
| 603 | if (skip && type != _STAG_LOGDEVID && type != _STAG_END) |
| 604 | goto __skip; |
| 605 | switch (type) { |
| 606 | case _STAG_LOGDEVID: |
| 607 | if (size >= 5 && size <= 6) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 608 | if ((dev = |
| 609 | isapnp_parse_device(card, size, |
| 610 | number++)) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | return 1; |
| 612 | size = 0; |
| 613 | skip = 0; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 614 | option_flags = 0; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 615 | pnp_add_card_device(card, dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | } else { |
| 617 | skip = 1; |
| 618 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | compat = 0; |
| 620 | break; |
| 621 | case _STAG_COMPATDEVID: |
| 622 | if (size == 4 && compat < DEVICE_COUNT_COMPATIBLE) { |
| 623 | isapnp_peek(tmp, 4); |
Bjorn Helgaas | 25eb846 | 2008-04-28 16:33:53 -0600 | [diff] [blame] | 624 | eisa_id = tmp[0] | tmp[1] << 8 | |
| 625 | tmp[2] << 16 | tmp[3] << 24; |
| 626 | pnp_eisa_id_to_string(eisa_id, id); |
| 627 | pnp_add_id(dev, id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | compat++; |
| 629 | size = 0; |
| 630 | } |
| 631 | break; |
| 632 | case _STAG_IRQ: |
| 633 | if (size < 2 || size > 3) |
| 634 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 635 | isapnp_parse_irq_resource(dev, option_flags, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | size = 0; |
| 637 | break; |
| 638 | case _STAG_DMA: |
| 639 | if (size != 2) |
| 640 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 641 | isapnp_parse_dma_resource(dev, option_flags, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | size = 0; |
| 643 | break; |
| 644 | case _STAG_STARTDEP: |
| 645 | if (size > 1) |
| 646 | goto __skip; |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 647 | priority = PNP_RES_PRIORITY_ACCEPTABLE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | if (size > 0) { |
| 649 | isapnp_peek(tmp, size); |
Bjorn Helgaas | e2a1a6f | 2008-06-27 16:57:15 -0600 | [diff] [blame] | 650 | priority = tmp[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | size = 0; |
| 652 | } |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 653 | option_flags = pnp_new_dependent_set(dev, priority); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | break; |
| 655 | case _STAG_ENDDEP: |
| 656 | if (size != 0) |
| 657 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 658 | option_flags = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | break; |
| 660 | case _STAG_IOPORT: |
| 661 | if (size != 7) |
| 662 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 663 | isapnp_parse_port_resource(dev, option_flags, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | size = 0; |
| 665 | break; |
| 666 | case _STAG_FIXEDIO: |
| 667 | if (size != 3) |
| 668 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 669 | isapnp_parse_fixed_port_resource(dev, option_flags, |
| 670 | size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | size = 0; |
| 672 | break; |
| 673 | case _STAG_VENDOR: |
| 674 | break; |
| 675 | case _LTAG_MEMRANGE: |
| 676 | if (size != 9) |
| 677 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 678 | isapnp_parse_mem_resource(dev, option_flags, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | size = 0; |
| 680 | break; |
| 681 | case _LTAG_ANSISTR: |
| 682 | isapnp_parse_name(dev->name, sizeof(dev->name), &size); |
| 683 | break; |
| 684 | case _LTAG_UNICODESTR: |
| 685 | /* silently ignore */ |
| 686 | /* who use unicode for hardware identification? */ |
| 687 | break; |
| 688 | case _LTAG_VENDOR: |
| 689 | break; |
| 690 | case _LTAG_MEM32RANGE: |
| 691 | if (size != 17) |
| 692 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 693 | isapnp_parse_mem32_resource(dev, option_flags, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | size = 0; |
| 695 | break; |
| 696 | case _LTAG_FIXEDMEM32RANGE: |
| 697 | if (size != 9) |
| 698 | goto __skip; |
Bjorn Helgaas | 1f32ca3 | 2008-06-27 16:57:17 -0600 | [diff] [blame] | 699 | isapnp_parse_fixed_mem32_resource(dev, option_flags, |
| 700 | size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | size = 0; |
| 702 | break; |
| 703 | case _STAG_END: |
| 704 | if (size > 0) |
| 705 | isapnp_skip_bytes(size); |
| 706 | return 1; |
| 707 | default: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 708 | dev_err(&dev->dev, "unknown tag %#x (card %i), " |
| 709 | "ignored\n", type, card->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | } |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 711 | __skip: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 712 | if (size > 0) |
| 713 | isapnp_skip_bytes(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | } |
| 715 | return 0; |
| 716 | } |
| 717 | |
| 718 | /* |
| 719 | * Parse resource map for ISA PnP card. |
| 720 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | static void __init isapnp_parse_resource_map(struct pnp_card *card) |
| 722 | { |
| 723 | unsigned char type, tmp[17]; |
| 724 | unsigned short size; |
| 725 | |
| 726 | while (1) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 727 | if (isapnp_read_tag(&type, &size) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | return; |
| 729 | switch (type) { |
| 730 | case _STAG_PNPVERNO: |
| 731 | if (size != 2) |
| 732 | goto __skip; |
| 733 | isapnp_peek(tmp, 2); |
| 734 | card->pnpver = tmp[0]; |
| 735 | card->productver = tmp[1]; |
| 736 | size = 0; |
| 737 | break; |
| 738 | case _STAG_LOGDEVID: |
| 739 | if (size >= 5 && size <= 6) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 740 | if (isapnp_create_device(card, size) == 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | return; |
| 742 | size = 0; |
| 743 | } |
| 744 | break; |
| 745 | case _STAG_VENDOR: |
| 746 | break; |
| 747 | case _LTAG_ANSISTR: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 748 | isapnp_parse_name(card->name, sizeof(card->name), |
| 749 | &size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 750 | break; |
| 751 | case _LTAG_UNICODESTR: |
| 752 | /* silently ignore */ |
| 753 | /* who use unicode for hardware identification? */ |
| 754 | break; |
| 755 | case _LTAG_VENDOR: |
| 756 | break; |
| 757 | case _STAG_END: |
| 758 | if (size > 0) |
| 759 | isapnp_skip_bytes(size); |
| 760 | return; |
| 761 | default: |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 762 | dev_err(&card->dev, "unknown tag %#x, ignored\n", |
| 763 | type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | } |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 765 | __skip: |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 766 | if (size > 0) |
| 767 | isapnp_skip_bytes(size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | } |
| 769 | } |
| 770 | |
| 771 | /* |
| 772 | * Compute ISA PnP checksum for first eight bytes. |
| 773 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | static unsigned char __init isapnp_checksum(unsigned char *data) |
| 775 | { |
| 776 | int i, j; |
| 777 | unsigned char checksum = 0x6a, bit, b; |
| 778 | |
| 779 | for (i = 0; i < 8; i++) { |
| 780 | b = data[i]; |
| 781 | for (j = 0; j < 8; j++) { |
| 782 | bit = 0; |
| 783 | if (b & (1 << j)) |
| 784 | bit = 1; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 785 | checksum = |
| 786 | ((((checksum ^ (checksum >> 1)) & 0x01) ^ bit) << 7) |
| 787 | | (checksum >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | } |
| 789 | } |
| 790 | return checksum; |
| 791 | } |
| 792 | |
| 793 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | * Build device list for all present ISA PnP devices. |
| 795 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | static int __init isapnp_build_device_list(void) |
| 797 | { |
| 798 | int csn; |
| 799 | unsigned char header[9], checksum; |
| 800 | struct pnp_card *card; |
Bjorn Helgaas | 068076d | 2008-04-28 16:33:57 -0600 | [diff] [blame] | 801 | u32 eisa_id; |
| 802 | char id[8]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | |
| 804 | isapnp_wait(); |
| 805 | isapnp_key(); |
| 806 | for (csn = 1; csn <= isapnp_csn_count; csn++) { |
| 807 | isapnp_wake(csn); |
| 808 | isapnp_peek(header, 9); |
| 809 | checksum = isapnp_checksum(header); |
Bjorn Helgaas | 068076d | 2008-04-28 16:33:57 -0600 | [diff] [blame] | 810 | eisa_id = header[0] | header[1] << 8 | |
| 811 | header[2] << 16 | header[3] << 24; |
| 812 | pnp_eisa_id_to_string(eisa_id, id); |
Bjorn Helgaas | 6bf2aab | 2008-04-28 16:33:58 -0600 | [diff] [blame] | 813 | card = pnp_alloc_card(&isapnp_protocol, csn, id); |
| 814 | if (!card) |
| 815 | continue; |
| 816 | |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 817 | #if 0 |
| 818 | dev_info(&card->dev, |
| 819 | "vendor: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", |
| 820 | header[0], header[1], header[2], header[3], header[4], |
| 821 | header[5], header[6], header[7], header[8]); |
| 822 | dev_info(&card->dev, "checksum = %#x\n", checksum); |
| 823 | #endif |
Bjorn Helgaas | 6bf2aab | 2008-04-28 16:33:58 -0600 | [diff] [blame] | 824 | INIT_LIST_HEAD(&card->devices); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 825 | card->serial = |
| 826 | (header[7] << 24) | (header[6] << 16) | (header[5] << 8) | |
| 827 | header[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | isapnp_checksum_value = 0x00; |
| 829 | isapnp_parse_resource_map(card); |
| 830 | if (isapnp_checksum_value != 0x00) |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 831 | dev_err(&card->dev, "invalid checksum %#x\n", |
| 832 | isapnp_checksum_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | card->checksum = isapnp_checksum_value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
| 835 | pnp_add_card(card); |
| 836 | } |
| 837 | isapnp_wait(); |
| 838 | return 0; |
| 839 | } |
| 840 | |
| 841 | /* |
| 842 | * Basic configuration routines. |
| 843 | */ |
| 844 | |
| 845 | int isapnp_present(void) |
| 846 | { |
| 847 | struct pnp_card *card; |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 848 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | pnp_for_each_card(card) { |
| 850 | if (card->protocol == &isapnp_protocol) |
| 851 | return 1; |
| 852 | } |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | int isapnp_cfg_begin(int csn, int logdev) |
| 857 | { |
| 858 | if (csn < 1 || csn > isapnp_csn_count || logdev > 10) |
| 859 | return -EINVAL; |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 860 | mutex_lock(&isapnp_cfg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | isapnp_wait(); |
| 862 | isapnp_key(); |
| 863 | isapnp_wake(csn); |
| 864 | #if 0 |
| 865 | /* to avoid malfunction when the isapnptools package is used */ |
| 866 | /* we must set RDP to our value again */ |
| 867 | /* it is possible to set RDP only in the isolation phase */ |
| 868 | /* Jens Thoms Toerring <Jens.Toerring@physik.fu-berlin.de> */ |
| 869 | isapnp_write_byte(0x02, 0x04); /* clear CSN of card */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 870 | mdelay(2); /* is this necessary? */ |
| 871 | isapnp_wake(csn); /* bring card into sleep state */ |
| 872 | isapnp_wake(0); /* bring card into isolation state */ |
| 873 | isapnp_set_rdp(); /* reset the RDP port */ |
| 874 | udelay(1000); /* delay 1000us */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | isapnp_write_byte(0x06, csn); /* reset CSN to previous value */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 876 | udelay(250); /* is this necessary? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | #endif |
| 878 | if (logdev >= 0) |
| 879 | isapnp_device(logdev); |
| 880 | return 0; |
| 881 | } |
| 882 | |
| 883 | int isapnp_cfg_end(void) |
| 884 | { |
| 885 | isapnp_wait(); |
Ingo Molnar | 14cc3e2 | 2006-03-26 01:37:14 -0800 | [diff] [blame] | 886 | mutex_unlock(&isapnp_cfg_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | return 0; |
| 888 | } |
| 889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | /* |
Bjorn Helgaas | 07d4e9a | 2007-07-26 10:41:21 -0700 | [diff] [blame] | 891 | * Initialization. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | */ |
| 893 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 894 | EXPORT_SYMBOL(isapnp_protocol); |
| 895 | EXPORT_SYMBOL(isapnp_present); |
| 896 | EXPORT_SYMBOL(isapnp_cfg_begin); |
| 897 | EXPORT_SYMBOL(isapnp_cfg_end); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | EXPORT_SYMBOL(isapnp_write_byte); |
| 899 | |
Bjorn Helgaas | 59284cb | 2008-04-28 16:34:05 -0600 | [diff] [blame] | 900 | static int isapnp_get_resources(struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | { |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 902 | int i, ret; |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 903 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 904 | dev_dbg(&dev->dev, "get resources\n"); |
Bjorn Helgaas | f449000 | 2008-04-28 16:34:09 -0600 | [diff] [blame] | 905 | pnp_init_resources(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | isapnp_cfg_begin(dev->card->number, dev->number); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 907 | dev->active = isapnp_read_byte(ISAPNP_CFG_ACTIVATE); |
| 908 | if (!dev->active) |
| 909 | goto __end; |
| 910 | |
| 911 | for (i = 0; i < ISAPNP_MAX_PORT; i++) { |
| 912 | ret = isapnp_read_word(ISAPNP_CFG_PORT + (i << 1)); |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 913 | pnp_add_io_resource(dev, ret, ret, |
| 914 | ret == 0 ? IORESOURCE_DISABLED : 0); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 915 | } |
| 916 | for (i = 0; i < ISAPNP_MAX_MEM; i++) { |
| 917 | ret = isapnp_read_word(ISAPNP_CFG_MEM + (i << 3)) << 8; |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 918 | pnp_add_mem_resource(dev, ret, ret, |
| 919 | ret == 0 ? IORESOURCE_DISABLED : 0); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 920 | } |
| 921 | for (i = 0; i < ISAPNP_MAX_IRQ; i++) { |
| 922 | ret = isapnp_read_word(ISAPNP_CFG_IRQ + (i << 1)) >> 8; |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 923 | pnp_add_irq_resource(dev, ret, |
| 924 | ret == 0 ? IORESOURCE_DISABLED : 0); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 925 | } |
| 926 | for (i = 0; i < ISAPNP_MAX_DMA; i++) { |
| 927 | ret = isapnp_read_byte(ISAPNP_CFG_DMA + i); |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 928 | pnp_add_dma_resource(dev, ret, |
| 929 | ret == 4 ? IORESOURCE_DISABLED : 0); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 930 | } |
| 931 | |
| 932 | __end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | isapnp_cfg_end(); |
Bjorn Helgaas | 01115e7 | 2008-04-28 16:34:38 -0600 | [diff] [blame] | 934 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | } |
| 936 | |
Bjorn Helgaas | 59284cb | 2008-04-28 16:34:05 -0600 | [diff] [blame] | 937 | static int isapnp_set_resources(struct pnp_dev *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 938 | { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 939 | struct resource *res; |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 940 | int tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 942 | dev_dbg(&dev->dev, "set resources\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | isapnp_cfg_begin(dev->card->number, dev->number); |
| 944 | dev->active = 1; |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 945 | for (tmp = 0; tmp < ISAPNP_MAX_PORT; tmp++) { |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 946 | res = pnp_get_resource(dev, IORESOURCE_IO, tmp); |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 947 | if (pnp_resource_enabled(res)) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 948 | dev_dbg(&dev->dev, " set io %d to %#llx\n", |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 949 | tmp, (unsigned long long) res->start); |
| 950 | isapnp_write_word(ISAPNP_CFG_PORT + (tmp << 1), |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 951 | res->start); |
| 952 | } |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 953 | } |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 954 | for (tmp = 0; tmp < ISAPNP_MAX_IRQ; tmp++) { |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 955 | res = pnp_get_resource(dev, IORESOURCE_IRQ, tmp); |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 956 | if (pnp_resource_enabled(res)) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 957 | int irq = res->start; |
| 958 | if (irq == 2) |
| 959 | irq = 9; |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 960 | dev_dbg(&dev->dev, " set irq %d to %d\n", tmp, irq); |
| 961 | isapnp_write_byte(ISAPNP_CFG_IRQ + (tmp << 1), irq); |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 962 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | } |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 964 | for (tmp = 0; tmp < ISAPNP_MAX_DMA; tmp++) { |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 965 | res = pnp_get_resource(dev, IORESOURCE_DMA, tmp); |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 966 | if (pnp_resource_enabled(res)) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 967 | dev_dbg(&dev->dev, " set dma %d to %lld\n", |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 968 | tmp, (unsigned long long) res->start); |
| 969 | isapnp_write_byte(ISAPNP_CFG_DMA + tmp, res->start); |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 970 | } |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 971 | } |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 972 | for (tmp = 0; tmp < ISAPNP_MAX_MEM; tmp++) { |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 973 | res = pnp_get_resource(dev, IORESOURCE_MEM, tmp); |
Bjorn Helgaas | aee3ad8 | 2008-06-27 16:56:57 -0600 | [diff] [blame] | 974 | if (pnp_resource_enabled(res)) { |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 975 | dev_dbg(&dev->dev, " set mem %d to %#llx\n", |
Bjorn Helgaas | 87e4acf | 2008-06-27 16:56:53 -0600 | [diff] [blame] | 976 | tmp, (unsigned long long) res->start); |
| 977 | isapnp_write_word(ISAPNP_CFG_MEM + (tmp << 3), |
Bjorn Helgaas | 06cb58a | 2008-04-28 16:34:29 -0600 | [diff] [blame] | 978 | (res->start >> 8) & 0xffff); |
| 979 | } |
Bjorn Helgaas | 72dcc88 | 2008-04-28 16:34:07 -0600 | [diff] [blame] | 980 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | /* FIXME: We aren't handling 32bit mems properly here */ |
| 982 | isapnp_activate(dev->number); |
| 983 | isapnp_cfg_end(); |
| 984 | return 0; |
| 985 | } |
| 986 | |
| 987 | static int isapnp_disable_resources(struct pnp_dev *dev) |
| 988 | { |
Bjorn Helgaas | b173491 | 2007-08-15 10:32:13 -0600 | [diff] [blame] | 989 | if (!dev->active) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | return -EINVAL; |
| 991 | isapnp_cfg_begin(dev->card->number, dev->number); |
| 992 | isapnp_deactivate(dev->number); |
| 993 | dev->active = 0; |
| 994 | isapnp_cfg_end(); |
| 995 | return 0; |
| 996 | } |
| 997 | |
| 998 | struct pnp_protocol isapnp_protocol = { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 999 | .name = "ISA Plug and Play", |
| 1000 | .get = isapnp_get_resources, |
| 1001 | .set = isapnp_set_resources, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | .disable = isapnp_disable_resources, |
| 1003 | }; |
| 1004 | |
| 1005 | static int __init isapnp_init(void) |
| 1006 | { |
| 1007 | int cards; |
| 1008 | struct pnp_card *card; |
| 1009 | struct pnp_dev *dev; |
| 1010 | |
| 1011 | if (isapnp_disable) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | printk(KERN_INFO "isapnp: ISA Plug & Play support disabled\n"); |
| 1013 | return 0; |
| 1014 | } |
David Woodhouse | 07bd1c4 | 2006-09-27 08:18:55 +0100 | [diff] [blame] | 1015 | #ifdef CONFIG_PPC_MERGE |
| 1016 | if (check_legacy_ioport(_PIDXR) || check_legacy_ioport(_PNPWRP)) |
| 1017 | return -EINVAL; |
| 1018 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | #ifdef ISAPNP_REGION_OK |
| 1020 | if (!request_region(_PIDXR, 1, "isapnp index")) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1021 | printk(KERN_ERR "isapnp: Index Register 0x%x already used\n", |
| 1022 | _PIDXR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1023 | return -EBUSY; |
| 1024 | } |
| 1025 | #endif |
| 1026 | if (!request_region(_PNPWRP, 1, "isapnp write")) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1027 | printk(KERN_ERR |
| 1028 | "isapnp: Write Data Register 0x%x already used\n", |
| 1029 | _PNPWRP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | #ifdef ISAPNP_REGION_OK |
| 1031 | release_region(_PIDXR, 1); |
| 1032 | #endif |
| 1033 | return -EBUSY; |
| 1034 | } |
| 1035 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1036 | if (pnp_register_protocol(&isapnp_protocol) < 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | return -EBUSY; |
| 1038 | |
| 1039 | /* |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1040 | * Print a message. The existing ISAPnP code is hanging machines |
| 1041 | * so let the user know where. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | */ |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1043 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1044 | printk(KERN_INFO "isapnp: Scanning for PnP cards...\n"); |
| 1045 | if (isapnp_rdp >= 0x203 && isapnp_rdp <= 0x3ff) { |
| 1046 | isapnp_rdp |= 3; |
| 1047 | if (!request_region(isapnp_rdp, 1, "isapnp read")) { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1048 | printk(KERN_ERR |
| 1049 | "isapnp: Read Data Register 0x%x already used\n", |
| 1050 | isapnp_rdp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | #ifdef ISAPNP_REGION_OK |
| 1052 | release_region(_PIDXR, 1); |
| 1053 | #endif |
| 1054 | release_region(_PNPWRP, 1); |
| 1055 | return -EBUSY; |
| 1056 | } |
| 1057 | isapnp_set_rdp(); |
| 1058 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | if (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff) { |
| 1060 | cards = isapnp_isolate(); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1061 | if (cards < 0 || (isapnp_rdp < 0x203 || isapnp_rdp > 0x3ff)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | #ifdef ISAPNP_REGION_OK |
| 1063 | release_region(_PIDXR, 1); |
| 1064 | #endif |
| 1065 | release_region(_PNPWRP, 1); |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1066 | printk(KERN_INFO |
| 1067 | "isapnp: No Plug & Play device found\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1068 | return 0; |
| 1069 | } |
| 1070 | request_region(isapnp_rdp, 1, "isapnp read"); |
| 1071 | } |
| 1072 | isapnp_build_device_list(); |
| 1073 | cards = 0; |
| 1074 | |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1075 | protocol_for_each_card(&isapnp_protocol, card) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | cards++; |
| 1077 | if (isapnp_verbose) { |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 1078 | dev_info(&card->dev, "card '%s'\n", |
| 1079 | card->name[0] ? card->name : "unknown"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | if (isapnp_verbose < 2) |
| 1081 | continue; |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1082 | card_for_each_dev(card, dev) { |
Bjorn Helgaas | af11cb2 | 2008-04-28 16:34:12 -0600 | [diff] [blame] | 1083 | dev_info(&card->dev, "device '%s'\n", |
| 1084 | dev->name[0] ? dev->name : "unknown"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | } |
| 1086 | } |
| 1087 | } |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 1088 | if (cards) |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1089 | printk(KERN_INFO |
| 1090 | "isapnp: %i Plug & Play card%s detected total\n", cards, |
| 1091 | cards > 1 ? "s" : ""); |
Bjorn Helgaas | 1e0aa9a | 2007-08-15 10:32:08 -0600 | [diff] [blame] | 1092 | else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | printk(KERN_INFO "isapnp: No Plug & Play card found\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | |
| 1095 | isapnp_proc_init(); |
| 1096 | return 0; |
| 1097 | } |
| 1098 | |
| 1099 | device_initcall(isapnp_init); |
| 1100 | |
| 1101 | /* format is: noisapnp */ |
| 1102 | |
| 1103 | static int __init isapnp_setup_disable(char *str) |
| 1104 | { |
| 1105 | isapnp_disable = 1; |
| 1106 | return 1; |
| 1107 | } |
| 1108 | |
| 1109 | __setup("noisapnp", isapnp_setup_disable); |
| 1110 | |
| 1111 | /* format is: isapnp=rdp,reset,skip_pci_scan,verbose */ |
| 1112 | |
| 1113 | static int __init isapnp_setup_isapnp(char *str) |
| 1114 | { |
Bjorn Helgaas | 9dd7846 | 2007-07-26 10:41:20 -0700 | [diff] [blame] | 1115 | (void)((get_option(&str, &isapnp_rdp) == 2) && |
| 1116 | (get_option(&str, &isapnp_reset) == 2) && |
| 1117 | (get_option(&str, &isapnp_verbose) == 2)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | return 1; |
| 1119 | } |
| 1120 | |
| 1121 | __setup("isapnp=", isapnp_setup_isapnp); |