Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #define GSCD_VERSION "0.4a Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>" |
| 2 | |
| 3 | /* |
| 4 | linux/drivers/block/gscd.c - GoldStar R420 CDROM driver |
| 5 | |
| 6 | Copyright (C) 1995 Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de> |
| 7 | based upon pre-works by Eberhard Moenkeberg <emoenke@gwdg.de> |
| 8 | |
| 9 | |
| 10 | For all kind of other information about the GoldStar CDROM |
| 11 | and this Linux device driver I installed a WWW-URL: |
| 12 | http://linux.rz.fh-hannover.de/~raupach |
| 13 | |
| 14 | |
| 15 | If you are the editor of a Linux CD, you should |
| 16 | enable gscd.c within your boot floppy kernel and |
| 17 | send me one of your CDs for free. |
| 18 | |
| 19 | |
| 20 | -------------------------------------------------------------------- |
| 21 | This program is free software; you can redistribute it and/or modify |
| 22 | it under the terms of the GNU General Public License as published by |
| 23 | the Free Software Foundation; either version 2, or (at your option) |
| 24 | any later version. |
| 25 | |
| 26 | This program is distributed in the hope that it will be useful, |
| 27 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 28 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 29 | GNU General Public License for more details. |
| 30 | |
| 31 | You should have received a copy of the GNU General Public License |
| 32 | along with this program; if not, write to the Free Software |
| 33 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 34 | |
| 35 | -------------------------------------------------------------------- |
| 36 | |
| 37 | 9 November 1999 -- Make kernel-parameter implementation work with 2.3.x |
| 38 | Removed init_module & cleanup_module in favor of |
| 39 | module_init & module_exit. |
| 40 | Torben Mathiasen <tmm@image.dk> |
| 41 | |
| 42 | */ |
| 43 | |
| 44 | /* These settings are for various debug-level. Leave they untouched ... */ |
| 45 | #define NO_GSCD_DEBUG |
| 46 | #define NO_IOCTL_DEBUG |
| 47 | #define NO_MODULE_DEBUG |
| 48 | #define NO_FUTURE_WORK |
| 49 | /*------------------------*/ |
| 50 | |
| 51 | #include <linux/module.h> |
| 52 | |
| 53 | #include <linux/slab.h> |
| 54 | #include <linux/errno.h> |
| 55 | #include <linux/signal.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include <linux/timer.h> |
| 57 | #include <linux/fs.h> |
| 58 | #include <linux/mm.h> |
| 59 | #include <linux/kernel.h> |
| 60 | #include <linux/cdrom.h> |
| 61 | #include <linux/ioport.h> |
| 62 | #include <linux/major.h> |
| 63 | #include <linux/string.h> |
| 64 | #include <linux/init.h> |
| 65 | |
| 66 | #include <asm/system.h> |
| 67 | #include <asm/io.h> |
| 68 | #include <asm/uaccess.h> |
| 69 | |
| 70 | #define MAJOR_NR GOLDSTAR_CDROM_MAJOR |
| 71 | #include <linux/blkdev.h> |
| 72 | #include "gscd.h" |
| 73 | |
| 74 | static int gscdPresent = 0; |
| 75 | |
| 76 | static unsigned char gscd_buf[2048]; /* buffer for block size conversion */ |
| 77 | static int gscd_bn = -1; |
| 78 | static short gscd_port = GSCD_BASE_ADDR; |
| 79 | module_param_named(gscd, gscd_port, short, 0); |
| 80 | |
| 81 | /* Kommt spaeter vielleicht noch mal dran ... |
| 82 | * static DECLARE_WAIT_QUEUE_HEAD(gscd_waitq); |
| 83 | */ |
| 84 | |
| 85 | static void gscd_read_cmd(struct request *req); |
| 86 | static void gscd_hsg2msf(long hsg, struct msf *msf); |
| 87 | static void gscd_bin2bcd(unsigned char *p); |
| 88 | |
| 89 | /* Schnittstellen zum Kern/FS */ |
| 90 | |
| 91 | static void __do_gscd_request(unsigned long dummy); |
| 92 | static int gscd_ioctl(struct inode *, struct file *, unsigned int, |
| 93 | unsigned long); |
| 94 | static int gscd_open(struct inode *, struct file *); |
| 95 | static int gscd_release(struct inode *, struct file *); |
| 96 | static int check_gscd_med_chg(struct gendisk *disk); |
| 97 | |
| 98 | /* GoldStar Funktionen */ |
| 99 | |
| 100 | static void cmd_out(int, char *, char *, int); |
| 101 | static void cmd_status(void); |
| 102 | static void init_cd_drive(int); |
| 103 | |
| 104 | static int get_status(void); |
| 105 | static void clear_Audio(void); |
| 106 | static void cc_invalidate(void); |
| 107 | |
| 108 | /* some things for the next version */ |
| 109 | #ifdef FUTURE_WORK |
| 110 | static void update_state(void); |
| 111 | static long gscd_msf2hsg(struct msf *mp); |
| 112 | static int gscd_bcd2bin(unsigned char bcd); |
| 113 | #endif |
| 114 | |
| 115 | |
| 116 | /* lo-level cmd-Funktionen */ |
| 117 | |
| 118 | static void cmd_info_in(char *, int); |
| 119 | static void cmd_end(void); |
| 120 | static void cmd_read_b(char *, int, int); |
| 121 | static void cmd_read_w(char *, int, int); |
| 122 | static int cmd_unit_alive(void); |
| 123 | static void cmd_write_cmd(char *); |
| 124 | |
| 125 | |
| 126 | /* GoldStar Variablen */ |
| 127 | |
| 128 | static int curr_drv_state; |
| 129 | static int drv_states[] = { 0, 0, 0, 0, 0, 0, 0, 0 }; |
| 130 | static int drv_mode; |
| 131 | static int disk_state; |
| 132 | static int speed; |
| 133 | static int ndrives; |
| 134 | |
| 135 | static unsigned char drv_num_read; |
| 136 | static unsigned char f_dsk_valid; |
| 137 | static unsigned char current_drive; |
| 138 | static unsigned char f_drv_ok; |
| 139 | |
| 140 | |
| 141 | static char f_AudioPlay; |
| 142 | static char f_AudioPause; |
| 143 | static int AudioStart_m; |
| 144 | static int AudioStart_f; |
| 145 | static int AudioEnd_m; |
| 146 | static int AudioEnd_f; |
| 147 | |
Ingo Molnar | 8d06afa | 2005-09-09 13:10:40 -0700 | [diff] [blame] | 148 | static DEFINE_TIMER(gscd_timer, NULL, 0, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | static DEFINE_SPINLOCK(gscd_lock); |
| 150 | static struct request_queue *gscd_queue; |
| 151 | |
| 152 | static struct block_device_operations gscd_fops = { |
| 153 | .owner = THIS_MODULE, |
| 154 | .open = gscd_open, |
| 155 | .release = gscd_release, |
| 156 | .ioctl = gscd_ioctl, |
| 157 | .media_changed = check_gscd_med_chg, |
| 158 | }; |
| 159 | |
| 160 | /* |
| 161 | * Checking if the media has been changed |
| 162 | * (not yet implemented) |
| 163 | */ |
| 164 | static int check_gscd_med_chg(struct gendisk *disk) |
| 165 | { |
| 166 | #ifdef GSCD_DEBUG |
| 167 | printk("gscd: check_med_change\n"); |
| 168 | #endif |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | #ifndef MODULE |
| 174 | /* Using new interface for kernel-parameters */ |
| 175 | |
| 176 | static int __init gscd_setup(char *str) |
| 177 | { |
| 178 | int ints[2]; |
| 179 | (void) get_options(str, ARRAY_SIZE(ints), ints); |
| 180 | |
| 181 | if (ints[0] > 0) { |
| 182 | gscd_port = ints[1]; |
| 183 | } |
| 184 | return 1; |
| 185 | } |
| 186 | |
| 187 | __setup("gscd=", gscd_setup); |
| 188 | |
| 189 | #endif |
| 190 | |
| 191 | static int gscd_ioctl(struct inode *ip, struct file *fp, unsigned int cmd, |
| 192 | unsigned long arg) |
| 193 | { |
| 194 | unsigned char to_do[10]; |
| 195 | unsigned char dummy; |
| 196 | |
| 197 | |
| 198 | switch (cmd) { |
| 199 | case CDROMSTART: /* Spin up the drive */ |
| 200 | /* Don't think we can do this. Even if we could, |
| 201 | * I think the drive times out and stops after a while |
| 202 | * anyway. For now, ignore it. |
| 203 | */ |
| 204 | return 0; |
| 205 | |
| 206 | case CDROMRESUME: /* keine Ahnung was das ist */ |
| 207 | return 0; |
| 208 | |
| 209 | |
| 210 | case CDROMEJECT: |
| 211 | cmd_status(); |
| 212 | to_do[0] = CMD_TRAY_CTL; |
| 213 | cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0); |
| 214 | |
| 215 | return 0; |
| 216 | |
| 217 | default: |
| 218 | return -EINVAL; |
| 219 | } |
| 220 | |
| 221 | } |
| 222 | |
| 223 | |
| 224 | /* |
| 225 | * Take care of the different block sizes between cdrom and Linux. |
| 226 | * When Linux gets variable block sizes this will probably go away. |
| 227 | */ |
| 228 | |
| 229 | static void gscd_transfer(struct request *req) |
| 230 | { |
| 231 | while (req->nr_sectors > 0 && gscd_bn == req->sector / 4) { |
| 232 | long offs = (req->sector & 3) * 512; |
| 233 | memcpy(req->buffer, gscd_buf + offs, 512); |
| 234 | req->nr_sectors--; |
| 235 | req->sector++; |
| 236 | req->buffer += 512; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | |
| 241 | /* |
| 242 | * I/O request routine called from Linux kernel. |
| 243 | */ |
| 244 | |
| 245 | static void do_gscd_request(request_queue_t * q) |
| 246 | { |
| 247 | __do_gscd_request(0); |
| 248 | } |
| 249 | |
| 250 | static void __do_gscd_request(unsigned long dummy) |
| 251 | { |
| 252 | struct request *req; |
| 253 | unsigned int block; |
| 254 | unsigned int nsect; |
| 255 | |
| 256 | repeat: |
| 257 | req = elv_next_request(gscd_queue); |
| 258 | if (!req) |
| 259 | return; |
| 260 | |
| 261 | block = req->sector; |
| 262 | nsect = req->nr_sectors; |
| 263 | |
| 264 | if (req->sector == -1) |
| 265 | goto out; |
| 266 | |
| 267 | if (req->cmd != READ) { |
Randy Dunlap | 9c275a8 | 2006-08-27 01:24:00 -0700 | [diff] [blame] | 268 | printk("GSCD: bad cmd %u\n", rq_data_dir(req)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | end_request(req, 0); |
| 270 | goto repeat; |
| 271 | } |
| 272 | |
| 273 | gscd_transfer(req); |
| 274 | |
| 275 | /* if we satisfied the request from the buffer, we're done. */ |
| 276 | |
| 277 | if (req->nr_sectors == 0) { |
| 278 | end_request(req, 1); |
| 279 | goto repeat; |
| 280 | } |
| 281 | #ifdef GSCD_DEBUG |
| 282 | printk("GSCD: block %d, nsect %d\n", block, nsect); |
| 283 | #endif |
| 284 | gscd_read_cmd(req); |
| 285 | out: |
| 286 | return; |
| 287 | } |
| 288 | |
| 289 | |
| 290 | |
| 291 | /* |
| 292 | * Check the result of the set-mode command. On success, send the |
| 293 | * read-data command. |
| 294 | */ |
| 295 | |
| 296 | static void gscd_read_cmd(struct request *req) |
| 297 | { |
| 298 | long block; |
| 299 | struct gscd_Play_msf gscdcmd; |
| 300 | char cmd[] = { CMD_READ, 0x80, 0, 0, 0, 0, 1 }; /* cmd mode M-S-F secth sectl */ |
| 301 | |
| 302 | cmd_status(); |
| 303 | if (disk_state & (ST_NO_DISK | ST_DOOR_OPEN)) { |
| 304 | printk("GSCD: no disk or door open\n"); |
| 305 | end_request(req, 0); |
| 306 | } else { |
| 307 | if (disk_state & ST_INVALID) { |
| 308 | printk("GSCD: disk invalid\n"); |
| 309 | end_request(req, 0); |
| 310 | } else { |
| 311 | gscd_bn = -1; /* purge our buffer */ |
| 312 | block = req->sector / 4; |
| 313 | gscd_hsg2msf(block, &gscdcmd.start); /* cvt to msf format */ |
| 314 | |
| 315 | cmd[2] = gscdcmd.start.min; |
| 316 | cmd[3] = gscdcmd.start.sec; |
| 317 | cmd[4] = gscdcmd.start.frame; |
| 318 | |
| 319 | #ifdef GSCD_DEBUG |
| 320 | printk("GSCD: read msf %d:%d:%d\n", cmd[2], cmd[3], |
| 321 | cmd[4]); |
| 322 | #endif |
| 323 | cmd_out(TYPE_DATA, (char *) &cmd, |
| 324 | (char *) &gscd_buf[0], 1); |
| 325 | |
| 326 | gscd_bn = req->sector / 4; |
| 327 | gscd_transfer(req); |
| 328 | end_request(req, 1); |
| 329 | } |
| 330 | } |
| 331 | SET_TIMER(__do_gscd_request, 1); |
| 332 | } |
| 333 | |
| 334 | |
| 335 | /* |
| 336 | * Open the device special file. Check that a disk is in. |
| 337 | */ |
| 338 | |
| 339 | static int gscd_open(struct inode *ip, struct file *fp) |
| 340 | { |
| 341 | int st; |
| 342 | |
| 343 | #ifdef GSCD_DEBUG |
| 344 | printk("GSCD: open\n"); |
| 345 | #endif |
| 346 | |
| 347 | if (gscdPresent == 0) |
| 348 | return -ENXIO; /* no hardware */ |
| 349 | |
| 350 | get_status(); |
| 351 | st = disk_state & (ST_NO_DISK | ST_DOOR_OPEN); |
| 352 | if (st) { |
| 353 | printk("GSCD: no disk or door open\n"); |
| 354 | return -ENXIO; |
| 355 | } |
| 356 | |
| 357 | /* if (updateToc() < 0) |
| 358 | return -EIO; |
| 359 | */ |
| 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | |
| 365 | /* |
| 366 | * On close, we flush all gscd blocks from the buffer cache. |
| 367 | */ |
| 368 | |
| 369 | static int gscd_release(struct inode *inode, struct file *file) |
| 370 | { |
| 371 | |
| 372 | #ifdef GSCD_DEBUG |
| 373 | printk("GSCD: release\n"); |
| 374 | #endif |
| 375 | |
| 376 | gscd_bn = -1; |
| 377 | |
| 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | |
| 382 | static int get_status(void) |
| 383 | { |
| 384 | int status; |
| 385 | |
| 386 | cmd_status(); |
| 387 | status = disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01); |
| 388 | |
| 389 | if (status == (ST_x08 | ST_x04 | ST_INVALID | ST_x01)) { |
| 390 | cc_invalidate(); |
| 391 | return 1; |
| 392 | } else { |
| 393 | return 0; |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | |
| 398 | static void cc_invalidate(void) |
| 399 | { |
| 400 | drv_num_read = 0xFF; |
| 401 | f_dsk_valid = 0xFF; |
| 402 | current_drive = 0xFF; |
| 403 | f_drv_ok = 0xFF; |
| 404 | |
| 405 | clear_Audio(); |
| 406 | |
| 407 | } |
| 408 | |
| 409 | static void clear_Audio(void) |
| 410 | { |
| 411 | |
| 412 | f_AudioPlay = 0; |
| 413 | f_AudioPause = 0; |
| 414 | AudioStart_m = 0; |
| 415 | AudioStart_f = 0; |
| 416 | AudioEnd_m = 0; |
| 417 | AudioEnd_f = 0; |
| 418 | |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * waiting ? |
| 423 | */ |
| 424 | |
| 425 | static int wait_drv_ready(void) |
| 426 | { |
| 427 | int found, read; |
| 428 | |
| 429 | do { |
| 430 | found = inb(GSCDPORT(0)); |
| 431 | found &= 0x0f; |
| 432 | read = inb(GSCDPORT(0)); |
| 433 | read &= 0x0f; |
| 434 | } while (read != found); |
| 435 | |
| 436 | #ifdef GSCD_DEBUG |
| 437 | printk("Wait for: %d\n", read); |
| 438 | #endif |
| 439 | |
| 440 | return read; |
| 441 | } |
| 442 | |
| 443 | static void cc_Ident(char *respons) |
| 444 | { |
| 445 | char to_do[] = { CMD_IDENT, 0, 0 }; |
| 446 | |
| 447 | cmd_out(TYPE_INFO, (char *) &to_do, (char *) respons, (int) 0x1E); |
| 448 | |
| 449 | } |
| 450 | |
| 451 | static void cc_SetSpeed(void) |
| 452 | { |
| 453 | char to_do[] = { CMD_SETSPEED, 0, 0 }; |
| 454 | char dummy; |
| 455 | |
| 456 | if (speed > 0) { |
| 457 | to_do[1] = speed & 0x0F; |
| 458 | cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0); |
| 459 | } |
| 460 | } |
| 461 | |
| 462 | static void cc_Reset(void) |
| 463 | { |
| 464 | char to_do[] = { CMD_RESET, 0 }; |
| 465 | char dummy; |
| 466 | |
| 467 | cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0); |
| 468 | } |
| 469 | |
| 470 | static void cmd_status(void) |
| 471 | { |
| 472 | char to_do[] = { CMD_STATUS, 0 }; |
| 473 | char dummy; |
| 474 | |
| 475 | cmd_out(TYPE_INFO, (char *) &to_do, (char *) &dummy, 0); |
| 476 | |
| 477 | #ifdef GSCD_DEBUG |
| 478 | printk("GSCD: Status: %d\n", disk_state); |
| 479 | #endif |
| 480 | |
| 481 | } |
| 482 | |
| 483 | static void cmd_out(int cmd_type, char *cmd, char *respo_buf, int respo_count) |
| 484 | { |
| 485 | int result; |
| 486 | |
| 487 | |
| 488 | result = wait_drv_ready(); |
| 489 | if (result != drv_mode) { |
| 490 | unsigned long test_loops = 0xFFFF; |
| 491 | int i, dummy; |
| 492 | |
| 493 | outb(curr_drv_state, GSCDPORT(0)); |
| 494 | |
| 495 | /* LOCLOOP_170 */ |
| 496 | do { |
| 497 | result = wait_drv_ready(); |
| 498 | test_loops--; |
| 499 | } while ((result != drv_mode) && (test_loops > 0)); |
| 500 | |
| 501 | if (result != drv_mode) { |
| 502 | disk_state = ST_x08 | ST_x04 | ST_INVALID; |
| 503 | return; |
| 504 | } |
| 505 | |
| 506 | /* ...and waiting */ |
| 507 | for (i = 1, dummy = 1; i < 0xFFFF; i++) { |
| 508 | dummy *= i; |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | /* LOC_172 */ |
| 513 | /* check the unit */ |
| 514 | /* and wake it up */ |
| 515 | if (cmd_unit_alive() != 0x08) { |
| 516 | /* LOC_174 */ |
| 517 | /* game over for this unit */ |
| 518 | disk_state = ST_x08 | ST_x04 | ST_INVALID; |
| 519 | return; |
| 520 | } |
| 521 | |
| 522 | /* LOC_176 */ |
| 523 | #ifdef GSCD_DEBUG |
| 524 | printk("LOC_176 "); |
| 525 | #endif |
| 526 | if (drv_mode == 0x09) { |
| 527 | /* magic... */ |
| 528 | printk("GSCD: magic ...\n"); |
| 529 | outb(result, GSCDPORT(2)); |
| 530 | } |
| 531 | |
| 532 | /* write the command to the drive */ |
| 533 | cmd_write_cmd(cmd); |
| 534 | |
| 535 | /* LOC_178 */ |
| 536 | for (;;) { |
| 537 | result = wait_drv_ready(); |
| 538 | if (result != drv_mode) { |
| 539 | /* LOC_179 */ |
| 540 | if (result == 0x04) { /* Mode 4 */ |
| 541 | /* LOC_205 */ |
| 542 | #ifdef GSCD_DEBUG |
| 543 | printk("LOC_205 "); |
| 544 | #endif |
| 545 | disk_state = inb(GSCDPORT(2)); |
| 546 | |
| 547 | do { |
| 548 | result = wait_drv_ready(); |
| 549 | } while (result != drv_mode); |
| 550 | return; |
| 551 | |
| 552 | } else { |
| 553 | if (result == 0x06) { /* Mode 6 */ |
| 554 | /* LOC_181 */ |
| 555 | #ifdef GSCD_DEBUG |
| 556 | printk("LOC_181 "); |
| 557 | #endif |
| 558 | |
| 559 | if (cmd_type == TYPE_DATA) { |
| 560 | /* read data */ |
| 561 | /* LOC_184 */ |
| 562 | if (drv_mode == 9) { |
| 563 | /* read the data to the buffer (word) */ |
| 564 | |
| 565 | /* (*(cmd+1))?(CD_FRAMESIZE/2):(CD_FRAMESIZE_RAW/2) */ |
| 566 | cmd_read_w |
| 567 | (respo_buf, |
| 568 | respo_count, |
| 569 | CD_FRAMESIZE / |
| 570 | 2); |
| 571 | return; |
| 572 | } else { |
| 573 | /* read the data to the buffer (byte) */ |
| 574 | |
| 575 | /* (*(cmd+1))?(CD_FRAMESIZE):(CD_FRAMESIZE_RAW) */ |
| 576 | cmd_read_b |
| 577 | (respo_buf, |
| 578 | respo_count, |
| 579 | CD_FRAMESIZE); |
| 580 | return; |
| 581 | } |
| 582 | } else { |
| 583 | /* read the info to the buffer */ |
| 584 | cmd_info_in(respo_buf, |
| 585 | respo_count); |
| 586 | return; |
| 587 | } |
| 588 | |
| 589 | return; |
| 590 | } |
| 591 | } |
| 592 | |
| 593 | } else { |
| 594 | disk_state = ST_x08 | ST_x04 | ST_INVALID; |
| 595 | return; |
| 596 | } |
| 597 | } /* for (;;) */ |
| 598 | |
| 599 | |
| 600 | #ifdef GSCD_DEBUG |
| 601 | printk("\n"); |
| 602 | #endif |
| 603 | } |
| 604 | |
| 605 | |
| 606 | static void cmd_write_cmd(char *pstr) |
| 607 | { |
| 608 | int i, j; |
| 609 | |
| 610 | /* LOC_177 */ |
| 611 | #ifdef GSCD_DEBUG |
| 612 | printk("LOC_177 "); |
| 613 | #endif |
| 614 | |
| 615 | /* calculate the number of parameter */ |
| 616 | j = *pstr & 0x0F; |
| 617 | |
| 618 | /* shift it out */ |
| 619 | for (i = 0; i < j; i++) { |
| 620 | outb(*pstr, GSCDPORT(2)); |
| 621 | pstr++; |
| 622 | } |
| 623 | } |
| 624 | |
| 625 | |
| 626 | static int cmd_unit_alive(void) |
| 627 | { |
| 628 | int result; |
| 629 | unsigned long max_test_loops; |
| 630 | |
| 631 | |
| 632 | /* LOC_172 */ |
| 633 | #ifdef GSCD_DEBUG |
| 634 | printk("LOC_172 "); |
| 635 | #endif |
| 636 | |
| 637 | outb(curr_drv_state, GSCDPORT(0)); |
| 638 | max_test_loops = 0xFFFF; |
| 639 | |
| 640 | do { |
| 641 | result = wait_drv_ready(); |
| 642 | max_test_loops--; |
| 643 | } while ((result != 0x08) && (max_test_loops > 0)); |
| 644 | |
| 645 | return result; |
| 646 | } |
| 647 | |
| 648 | |
| 649 | static void cmd_info_in(char *pb, int count) |
| 650 | { |
| 651 | int result; |
| 652 | char read; |
| 653 | |
| 654 | |
| 655 | /* read info */ |
| 656 | /* LOC_182 */ |
| 657 | #ifdef GSCD_DEBUG |
| 658 | printk("LOC_182 "); |
| 659 | #endif |
| 660 | |
| 661 | do { |
| 662 | read = inb(GSCDPORT(2)); |
| 663 | if (count > 0) { |
| 664 | *pb = read; |
| 665 | pb++; |
| 666 | count--; |
| 667 | } |
| 668 | |
| 669 | /* LOC_183 */ |
| 670 | do { |
| 671 | result = wait_drv_ready(); |
| 672 | } while (result == 0x0E); |
| 673 | } while (result == 6); |
| 674 | |
| 675 | cmd_end(); |
| 676 | return; |
| 677 | } |
| 678 | |
| 679 | |
| 680 | static void cmd_read_b(char *pb, int count, int size) |
| 681 | { |
| 682 | int result; |
| 683 | int i; |
| 684 | |
| 685 | |
| 686 | /* LOC_188 */ |
| 687 | /* LOC_189 */ |
| 688 | #ifdef GSCD_DEBUG |
| 689 | printk("LOC_189 "); |
| 690 | #endif |
| 691 | |
| 692 | do { |
| 693 | do { |
| 694 | result = wait_drv_ready(); |
| 695 | } while (result != 6 || result == 0x0E); |
| 696 | |
| 697 | if (result != 6) { |
| 698 | cmd_end(); |
| 699 | return; |
| 700 | } |
| 701 | #ifdef GSCD_DEBUG |
| 702 | printk("LOC_191 "); |
| 703 | #endif |
| 704 | |
| 705 | for (i = 0; i < size; i++) { |
| 706 | *pb = inb(GSCDPORT(2)); |
| 707 | pb++; |
| 708 | } |
| 709 | count--; |
| 710 | } while (count > 0); |
| 711 | |
| 712 | cmd_end(); |
| 713 | return; |
| 714 | } |
| 715 | |
| 716 | |
| 717 | static void cmd_end(void) |
| 718 | { |
| 719 | int result; |
| 720 | |
| 721 | |
| 722 | /* LOC_204 */ |
| 723 | #ifdef GSCD_DEBUG |
| 724 | printk("LOC_204 "); |
| 725 | #endif |
| 726 | |
| 727 | do { |
| 728 | result = wait_drv_ready(); |
| 729 | if (result == drv_mode) { |
| 730 | return; |
| 731 | } |
| 732 | } while (result != 4); |
| 733 | |
| 734 | /* LOC_205 */ |
| 735 | #ifdef GSCD_DEBUG |
| 736 | printk("LOC_205 "); |
| 737 | #endif |
| 738 | |
| 739 | disk_state = inb(GSCDPORT(2)); |
| 740 | |
| 741 | do { |
| 742 | result = wait_drv_ready(); |
| 743 | } while (result != drv_mode); |
| 744 | return; |
| 745 | |
| 746 | } |
| 747 | |
| 748 | |
| 749 | static void cmd_read_w(char *pb, int count, int size) |
| 750 | { |
| 751 | int result; |
| 752 | int i; |
| 753 | |
| 754 | |
| 755 | #ifdef GSCD_DEBUG |
| 756 | printk("LOC_185 "); |
| 757 | #endif |
| 758 | |
| 759 | do { |
| 760 | /* LOC_185 */ |
| 761 | do { |
| 762 | result = wait_drv_ready(); |
| 763 | } while (result != 6 || result == 0x0E); |
| 764 | |
| 765 | if (result != 6) { |
| 766 | cmd_end(); |
| 767 | return; |
| 768 | } |
| 769 | |
| 770 | for (i = 0; i < size; i++) { |
| 771 | /* na, hier muss ich noch mal drueber nachdenken */ |
| 772 | *pb = inw(GSCDPORT(2)); |
| 773 | pb++; |
| 774 | } |
| 775 | count--; |
| 776 | } while (count > 0); |
| 777 | |
| 778 | cmd_end(); |
| 779 | return; |
| 780 | } |
| 781 | |
| 782 | static int __init find_drives(void) |
| 783 | { |
| 784 | int *pdrv; |
| 785 | int drvnum; |
| 786 | int subdrv; |
| 787 | int i; |
| 788 | |
| 789 | speed = 0; |
| 790 | pdrv = (int *) &drv_states; |
| 791 | curr_drv_state = 0xFE; |
| 792 | subdrv = 0; |
| 793 | drvnum = 0; |
| 794 | |
| 795 | for (i = 0; i < 8; i++) { |
| 796 | subdrv++; |
| 797 | cmd_status(); |
| 798 | disk_state &= ST_x08 | ST_x04 | ST_INVALID | ST_x01; |
| 799 | if (disk_state != (ST_x08 | ST_x04 | ST_INVALID)) { |
| 800 | /* LOC_240 */ |
| 801 | *pdrv = curr_drv_state; |
| 802 | init_cd_drive(drvnum); |
| 803 | pdrv++; |
| 804 | drvnum++; |
| 805 | } else { |
| 806 | if (subdrv < 2) { |
| 807 | continue; |
| 808 | } else { |
| 809 | subdrv = 0; |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /* curr_drv_state<<1; <-- das geht irgendwie nicht */ |
| 814 | /* muss heissen: curr_drv_state <<= 1; (ist ja Wert-Zuweisung) */ |
| 815 | curr_drv_state *= 2; |
| 816 | curr_drv_state |= 1; |
| 817 | #ifdef GSCD_DEBUG |
| 818 | printk("DriveState: %d\n", curr_drv_state); |
| 819 | #endif |
| 820 | } |
| 821 | |
| 822 | ndrives = drvnum; |
| 823 | return drvnum; |
| 824 | } |
| 825 | |
| 826 | static void __init init_cd_drive(int num) |
| 827 | { |
| 828 | char resp[50]; |
| 829 | int i; |
| 830 | |
| 831 | printk("GSCD: init unit %d\n", num); |
| 832 | cc_Ident((char *) &resp); |
| 833 | |
| 834 | printk("GSCD: identification: "); |
| 835 | for (i = 0; i < 0x1E; i++) { |
| 836 | printk("%c", resp[i]); |
| 837 | } |
| 838 | printk("\n"); |
| 839 | |
| 840 | cc_SetSpeed(); |
| 841 | |
| 842 | } |
| 843 | |
| 844 | #ifdef FUTURE_WORK |
| 845 | /* return_done */ |
| 846 | static void update_state(void) |
| 847 | { |
| 848 | unsigned int AX; |
| 849 | |
| 850 | |
| 851 | if ((disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01)) == 0) { |
| 852 | if (disk_state == (ST_x08 | ST_x04 | ST_INVALID)) { |
| 853 | AX = ST_INVALID; |
| 854 | } |
| 855 | |
| 856 | if ((disk_state & (ST_x08 | ST_x04 | ST_INVALID | ST_x01)) |
| 857 | == 0) { |
| 858 | invalidate(); |
| 859 | f_drv_ok = 0; |
| 860 | } |
| 861 | |
| 862 | AX |= 0x8000; |
| 863 | } |
| 864 | |
| 865 | if (disk_state & ST_PLAYING) { |
| 866 | AX |= 0x200; |
| 867 | } |
| 868 | |
| 869 | AX |= 0x100; |
| 870 | /* pkt_esbx = AX; */ |
| 871 | |
| 872 | disk_state = 0; |
| 873 | |
| 874 | } |
| 875 | #endif |
| 876 | |
| 877 | static struct gendisk *gscd_disk; |
| 878 | |
| 879 | static void __exit gscd_exit(void) |
| 880 | { |
| 881 | CLEAR_TIMER; |
| 882 | |
| 883 | del_gendisk(gscd_disk); |
| 884 | put_disk(gscd_disk); |
| 885 | if ((unregister_blkdev(MAJOR_NR, "gscd") == -EINVAL)) { |
| 886 | printk("What's that: can't unregister GoldStar-module\n"); |
| 887 | return; |
| 888 | } |
| 889 | blk_cleanup_queue(gscd_queue); |
| 890 | release_region(gscd_port, GSCD_IO_EXTENT); |
| 891 | printk(KERN_INFO "GoldStar-module released.\n"); |
| 892 | } |
| 893 | |
| 894 | /* This is the common initialisation for the GoldStar drive. */ |
| 895 | /* It is called at boot time AND for module init. */ |
| 896 | static int __init gscd_init(void) |
| 897 | { |
| 898 | int i; |
| 899 | int result; |
| 900 | int ret=0; |
| 901 | |
| 902 | printk(KERN_INFO "GSCD: version %s\n", GSCD_VERSION); |
| 903 | printk(KERN_INFO |
| 904 | "GSCD: Trying to detect a Goldstar R420 CD-ROM drive at 0x%X.\n", |
| 905 | gscd_port); |
| 906 | |
| 907 | if (!request_region(gscd_port, GSCD_IO_EXTENT, "gscd")) { |
| 908 | printk(KERN_WARNING "GSCD: Init failed, I/O port (%X) already" |
| 909 | " in use.\n", gscd_port); |
| 910 | return -EIO; |
| 911 | } |
| 912 | |
| 913 | |
| 914 | /* check for card */ |
| 915 | result = wait_drv_ready(); |
| 916 | if (result == 0x09) { |
| 917 | printk(KERN_WARNING "GSCD: DMA kann ich noch nicht!\n"); |
| 918 | ret = -EIO; |
| 919 | goto err_out1; |
| 920 | } |
| 921 | |
| 922 | if (result == 0x0b) { |
| 923 | drv_mode = result; |
| 924 | i = find_drives(); |
| 925 | if (i == 0) { |
| 926 | printk(KERN_WARNING "GSCD: GoldStar CD-ROM Drive is" |
| 927 | " not found.\n"); |
| 928 | ret = -EIO; |
| 929 | goto err_out1; |
| 930 | } |
| 931 | } |
| 932 | |
| 933 | if ((result != 0x0b) && (result != 0x09)) { |
| 934 | printk(KERN_WARNING "GSCD: GoldStar Interface Adapter does not " |
| 935 | "exist or H/W error\n"); |
| 936 | ret = -EIO; |
| 937 | goto err_out1; |
| 938 | } |
| 939 | |
| 940 | /* reset all drives */ |
| 941 | i = 0; |
| 942 | while (drv_states[i] != 0) { |
| 943 | curr_drv_state = drv_states[i]; |
| 944 | printk(KERN_INFO "GSCD: Reset unit %d ... ", i); |
| 945 | cc_Reset(); |
| 946 | printk("done\n"); |
| 947 | i++; |
| 948 | } |
| 949 | |
| 950 | gscd_disk = alloc_disk(1); |
| 951 | if (!gscd_disk) |
| 952 | goto err_out1; |
| 953 | gscd_disk->major = MAJOR_NR; |
| 954 | gscd_disk->first_minor = 0; |
| 955 | gscd_disk->fops = &gscd_fops; |
| 956 | sprintf(gscd_disk->disk_name, "gscd"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | |
| 958 | if (register_blkdev(MAJOR_NR, "gscd")) { |
| 959 | ret = -EIO; |
| 960 | goto err_out2; |
| 961 | } |
| 962 | |
| 963 | gscd_queue = blk_init_queue(do_gscd_request, &gscd_lock); |
| 964 | if (!gscd_queue) { |
| 965 | ret = -ENOMEM; |
| 966 | goto err_out3; |
| 967 | } |
| 968 | |
| 969 | disk_state = 0; |
| 970 | gscdPresent = 1; |
| 971 | |
| 972 | gscd_disk->queue = gscd_queue; |
| 973 | add_disk(gscd_disk); |
| 974 | |
| 975 | printk(KERN_INFO "GSCD: GoldStar CD-ROM Drive found.\n"); |
| 976 | return 0; |
| 977 | |
| 978 | err_out3: |
| 979 | unregister_blkdev(MAJOR_NR, "gscd"); |
| 980 | err_out2: |
| 981 | put_disk(gscd_disk); |
| 982 | err_out1: |
| 983 | release_region(gscd_port, GSCD_IO_EXTENT); |
| 984 | return ret; |
| 985 | } |
| 986 | |
| 987 | static void gscd_hsg2msf(long hsg, struct msf *msf) |
| 988 | { |
| 989 | hsg += CD_MSF_OFFSET; |
| 990 | msf->min = hsg / (CD_FRAMES * CD_SECS); |
| 991 | hsg %= CD_FRAMES * CD_SECS; |
| 992 | msf->sec = hsg / CD_FRAMES; |
| 993 | msf->frame = hsg % CD_FRAMES; |
| 994 | |
| 995 | gscd_bin2bcd(&msf->min); /* convert to BCD */ |
| 996 | gscd_bin2bcd(&msf->sec); |
| 997 | gscd_bin2bcd(&msf->frame); |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | static void gscd_bin2bcd(unsigned char *p) |
| 1002 | { |
| 1003 | int u, t; |
| 1004 | |
| 1005 | u = *p % 10; |
| 1006 | t = *p / 10; |
| 1007 | *p = u | (t << 4); |
| 1008 | } |
| 1009 | |
| 1010 | |
| 1011 | #ifdef FUTURE_WORK |
| 1012 | static long gscd_msf2hsg(struct msf *mp) |
| 1013 | { |
| 1014 | return gscd_bcd2bin(mp->frame) |
| 1015 | + gscd_bcd2bin(mp->sec) * CD_FRAMES |
| 1016 | + gscd_bcd2bin(mp->min) * CD_FRAMES * CD_SECS - CD_MSF_OFFSET; |
| 1017 | } |
| 1018 | |
| 1019 | static int gscd_bcd2bin(unsigned char bcd) |
| 1020 | { |
| 1021 | return (bcd >> 4) * 10 + (bcd & 0xF); |
| 1022 | } |
| 1023 | #endif |
| 1024 | |
| 1025 | MODULE_AUTHOR("Oliver Raupach <raupach@nwfs1.rz.fh-hannover.de>"); |
| 1026 | MODULE_LICENSE("GPL"); |
| 1027 | module_init(gscd_init); |
| 1028 | module_exit(gscd_exit); |
| 1029 | MODULE_ALIAS_BLOCKDEV_MAJOR(GOLDSTAR_CDROM_MAJOR); |