Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
59bca8cc BZ |
2 | * Copyright (C) 1994-1998 Linus Torvalds & authors (see below) |
3 | * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz | |
1da177e4 LT |
4 | */ |
5 | ||
6 | /* | |
7 | * Mostly written by Mark Lord <mlord@pobox.com> | |
8 | * and Gadi Oxman <gadio@netvision.net.il> | |
9 | * and Andre Hedrick <andre@linux-ide.org> | |
10 | * | |
11 | * See linux/MAINTAINERS for address of current maintainer. | |
12 | * | |
13 | * This is the IDE probe module, as evolved from hd.c and ide.c. | |
14 | * | |
bbe4d6d8 BZ |
15 | * -- increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot |
16 | * by Andrea Arcangeli | |
1da177e4 LT |
17 | */ |
18 | ||
1da177e4 LT |
19 | #include <linux/module.h> |
20 | #include <linux/types.h> | |
21 | #include <linux/string.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/timer.h> | |
24 | #include <linux/mm.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/major.h> | |
27 | #include <linux/errno.h> | |
28 | #include <linux/genhd.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/ide.h> | |
32 | #include <linux/spinlock.h> | |
33 | #include <linux/kmod.h> | |
34 | #include <linux/pci.h> | |
dc81785d | 35 | #include <linux/scatterlist.h> |
1da177e4 LT |
36 | |
37 | #include <asm/byteorder.h> | |
38 | #include <asm/irq.h> | |
39 | #include <asm/uaccess.h> | |
40 | #include <asm/io.h> | |
41 | ||
63b51c6d BZ |
42 | static ide_hwif_t ide_hwifs[MAX_HWIFS]; /* master data repository */ |
43 | ||
1da177e4 LT |
44 | /** |
45 | * generic_id - add a generic drive id | |
46 | * @drive: drive to make an ID block for | |
47 | * | |
48 | * Add a fake id field to the drive we are passed. This allows | |
49 | * use to skip a ton of NULL checks (which people always miss) | |
50 | * and make drive properties unconditional outside of this file | |
51 | */ | |
52 | ||
53 | static void generic_id(ide_drive_t *drive) | |
54 | { | |
55 | drive->id->cyls = drive->cyl; | |
56 | drive->id->heads = drive->head; | |
57 | drive->id->sectors = drive->sect; | |
58 | drive->id->cur_cyls = drive->cyl; | |
59 | drive->id->cur_heads = drive->head; | |
60 | drive->id->cur_sectors = drive->sect; | |
61 | } | |
62 | ||
63 | static void ide_disk_init_chs(ide_drive_t *drive) | |
64 | { | |
65 | struct hd_driveid *id = drive->id; | |
66 | ||
67 | /* Extract geometry if we did not already have one for the drive */ | |
68 | if (!drive->cyl || !drive->head || !drive->sect) { | |
69 | drive->cyl = drive->bios_cyl = id->cyls; | |
70 | drive->head = drive->bios_head = id->heads; | |
71 | drive->sect = drive->bios_sect = id->sectors; | |
72 | } | |
73 | ||
74 | /* Handle logical geometry translation by the drive */ | |
75 | if ((id->field_valid & 1) && id->cur_cyls && | |
76 | id->cur_heads && (id->cur_heads <= 16) && id->cur_sectors) { | |
77 | drive->cyl = id->cur_cyls; | |
78 | drive->head = id->cur_heads; | |
79 | drive->sect = id->cur_sectors; | |
80 | } | |
81 | ||
82 | /* Use physical geometry if what we have still makes no sense */ | |
83 | if (drive->head > 16 && id->heads && id->heads <= 16) { | |
84 | drive->cyl = id->cyls; | |
85 | drive->head = id->heads; | |
86 | drive->sect = id->sectors; | |
87 | } | |
88 | } | |
89 | ||
90 | static void ide_disk_init_mult_count(ide_drive_t *drive) | |
91 | { | |
92 | struct hd_driveid *id = drive->id; | |
93 | ||
94 | drive->mult_count = 0; | |
95 | if (id->max_multsect) { | |
96 | #ifdef CONFIG_IDEDISK_MULTI_MODE | |
97 | id->multsect = ((id->max_multsect/2) > 1) ? id->max_multsect : 0; | |
98 | id->multsect_valid = id->multsect ? 1 : 0; | |
4ee06b7e | 99 | drive->mult_req = id->multsect_valid ? id->max_multsect : 0; |
1da177e4 LT |
100 | drive->special.b.set_multmode = drive->mult_req ? 1 : 0; |
101 | #else /* original, pre IDE-NFG, per request of AC */ | |
4ee06b7e | 102 | drive->mult_req = 0; |
1da177e4 LT |
103 | if (drive->mult_req > id->max_multsect) |
104 | drive->mult_req = id->max_multsect; | |
105 | if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect)) | |
106 | drive->special.b.set_multmode = 1; | |
107 | #endif | |
108 | } | |
109 | } | |
110 | ||
1da177e4 LT |
111 | /** |
112 | * do_identify - identify a drive | |
113 | * @drive: drive to identify | |
114 | * @cmd: command used | |
115 | * | |
116 | * Called when we have issued a drive identify command to | |
117 | * read and parse the results. This function is run with | |
118 | * interrupts disabled. | |
119 | */ | |
120 | ||
121 | static inline void do_identify (ide_drive_t *drive, u8 cmd) | |
122 | { | |
123 | ide_hwif_t *hwif = HWIF(drive); | |
124 | int bswap = 1; | |
125 | struct hd_driveid *id; | |
126 | ||
127 | id = drive->id; | |
128 | /* read 512 bytes of id info */ | |
9567b349 | 129 | hwif->input_data(drive, NULL, id, SECTOR_SIZE); |
1da177e4 LT |
130 | |
131 | drive->id_read = 1; | |
132 | local_irq_enable(); | |
7b9f25b5 BZ |
133 | #ifdef DEBUG |
134 | printk(KERN_INFO "%s: dumping identify data\n", drive->name); | |
135 | ide_dump_identify((u8 *)id); | |
136 | #endif | |
1da177e4 LT |
137 | ide_fix_driveid(id); |
138 | ||
e71bc140 | 139 | #if defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA) |
1da177e4 LT |
140 | /* |
141 | * EATA SCSI controllers do a hardware ATA emulation: | |
142 | * Ignore them if there is a driver for them available. | |
143 | */ | |
144 | if ((id->model[0] == 'P' && id->model[1] == 'M') || | |
145 | (id->model[0] == 'S' && id->model[1] == 'K')) { | |
146 | printk("%s: EATA SCSI HBA %.10s\n", drive->name, id->model); | |
147 | goto err_misc; | |
148 | } | |
e71bc140 | 149 | #endif /* CONFIG_SCSI_EATA || CONFIG_SCSI_EATA_PIO */ |
1da177e4 LT |
150 | |
151 | /* | |
152 | * WIN_IDENTIFY returns little-endian info, | |
153 | * WIN_PIDENTIFY *usually* returns little-endian info. | |
154 | */ | |
155 | if (cmd == WIN_PIDENTIFY) { | |
156 | if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */ | |
157 | || (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */ | |
158 | || (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */ | |
159 | /* Vertos drives may still be weird */ | |
160 | bswap ^= 1; | |
161 | } | |
162 | ide_fixstring(id->model, sizeof(id->model), bswap); | |
163 | ide_fixstring(id->fw_rev, sizeof(id->fw_rev), bswap); | |
164 | ide_fixstring(id->serial_no, sizeof(id->serial_no), bswap); | |
165 | ||
699b052a TH |
166 | /* we depend on this a lot! */ |
167 | id->model[sizeof(id->model)-1] = '\0'; | |
168 | ||
1da177e4 LT |
169 | if (strstr(id->model, "E X A B Y T E N E S T")) |
170 | goto err_misc; | |
171 | ||
1da177e4 LT |
172 | printk("%s: %s, ", drive->name, id->model); |
173 | drive->present = 1; | |
174 | drive->dead = 0; | |
175 | ||
176 | /* | |
177 | * Check for an ATAPI device | |
178 | */ | |
179 | if (cmd == WIN_PIDENTIFY) { | |
180 | u8 type = (id->config >> 8) & 0x1f; | |
181 | printk("ATAPI "); | |
182 | switch (type) { | |
183 | case ide_floppy: | |
184 | if (!strstr(id->model, "CD-ROM")) { | |
185 | if (!strstr(id->model, "oppy") && | |
186 | !strstr(id->model, "poyp") && | |
187 | !strstr(id->model, "ZIP")) | |
188 | printk("cdrom or floppy?, assuming "); | |
189 | if (drive->media != ide_cdrom) { | |
190 | printk ("FLOPPY"); | |
191 | drive->removable = 1; | |
192 | break; | |
193 | } | |
194 | } | |
195 | /* Early cdrom models used zero */ | |
196 | type = ide_cdrom; | |
197 | case ide_cdrom: | |
198 | drive->removable = 1; | |
199 | #ifdef CONFIG_PPC | |
200 | /* kludge for Apple PowerBook internal zip */ | |
201 | if (!strstr(id->model, "CD-ROM") && | |
202 | strstr(id->model, "ZIP")) { | |
203 | printk ("FLOPPY"); | |
204 | type = ide_floppy; | |
205 | break; | |
206 | } | |
207 | #endif | |
208 | printk ("CD/DVD-ROM"); | |
209 | break; | |
210 | case ide_tape: | |
211 | printk ("TAPE"); | |
212 | break; | |
213 | case ide_optical: | |
214 | printk ("OPTICAL"); | |
215 | drive->removable = 1; | |
216 | break; | |
217 | default: | |
218 | printk("UNKNOWN (type %d)", type); | |
219 | break; | |
220 | } | |
221 | printk (" drive\n"); | |
222 | drive->media = type; | |
223 | /* an ATAPI device ignores DRDY */ | |
224 | drive->ready_stat = 0; | |
225 | return; | |
226 | } | |
227 | ||
228 | /* | |
229 | * Not an ATAPI device: looks like a "regular" hard disk | |
230 | */ | |
98109337 RP |
231 | |
232 | /* | |
233 | * 0x848a = CompactFlash device | |
234 | * These are *not* removable in Linux definition of the term | |
235 | */ | |
236 | ||
237 | if ((id->config != 0x848a) && (id->config & (1<<7))) | |
1da177e4 LT |
238 | drive->removable = 1; |
239 | ||
1da177e4 | 240 | drive->media = ide_disk; |
98109337 | 241 | printk("%s DISK drive\n", (id->config == 0x848a) ? "CFA" : "ATA" ); |
cd3dbc99 | 242 | |
1da177e4 LT |
243 | return; |
244 | ||
245 | err_misc: | |
246 | kfree(id); | |
247 | drive->present = 0; | |
248 | return; | |
249 | } | |
250 | ||
251 | /** | |
252 | * actual_try_to_identify - send ata/atapi identify | |
253 | * @drive: drive to identify | |
254 | * @cmd: command to use | |
255 | * | |
256 | * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive | |
257 | * and waits for a response. It also monitors irqs while this is | |
258 | * happening, in hope of automatically determining which one is | |
259 | * being used by the interface. | |
260 | * | |
261 | * Returns: 0 device was identified | |
262 | * 1 device timed-out (no response to identify request) | |
263 | * 2 device aborted the command (refused to identify itself) | |
264 | */ | |
265 | ||
266 | static int actual_try_to_identify (ide_drive_t *drive, u8 cmd) | |
267 | { | |
268 | ide_hwif_t *hwif = HWIF(drive); | |
4c3032d8 | 269 | struct ide_io_ports *io_ports = &hwif->io_ports; |
c47137a9 | 270 | int use_altstatus = 0, rc; |
1da177e4 LT |
271 | unsigned long timeout; |
272 | u8 s = 0, a = 0; | |
273 | ||
274 | /* take a deep breath */ | |
275 | msleep(50); | |
276 | ||
4c3032d8 | 277 | if (io_ports->ctl_addr) { |
c47137a9 BZ |
278 | a = ide_read_altstatus(drive); |
279 | s = ide_read_status(drive); | |
280 | if ((a ^ s) & ~INDEX_STAT) | |
1da177e4 | 281 | /* ancient Seagate drives, broken interfaces */ |
c47137a9 BZ |
282 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
283 | "instead of ALTSTATUS(0x%02x)\n", | |
284 | drive->name, s, a); | |
285 | else | |
1da177e4 | 286 | /* use non-intrusive polling */ |
c47137a9 BZ |
287 | use_altstatus = 1; |
288 | } | |
1da177e4 LT |
289 | |
290 | /* set features register for atapi | |
291 | * identify command to be sure of reply | |
292 | */ | |
293 | if ((cmd == WIN_PIDENTIFY)) | |
294 | /* disable dma & overlap */ | |
4c3032d8 | 295 | hwif->OUTB(0, io_ports->feature_addr); |
1da177e4 LT |
296 | |
297 | /* ask drive for ID */ | |
c6dfa867 | 298 | hwif->exec_command(hwif, cmd); |
1da177e4 LT |
299 | |
300 | timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; | |
301 | timeout += jiffies; | |
302 | do { | |
303 | if (time_after(jiffies, timeout)) { | |
304 | /* drive timed-out */ | |
305 | return 1; | |
306 | } | |
307 | /* give drive a breather */ | |
308 | msleep(50); | |
c47137a9 BZ |
309 | s = use_altstatus ? ide_read_altstatus(drive) |
310 | : ide_read_status(drive); | |
311 | } while (s & BUSY_STAT); | |
1da177e4 LT |
312 | |
313 | /* wait for IRQ and DRQ_STAT */ | |
314 | msleep(50); | |
c47137a9 BZ |
315 | s = ide_read_status(drive); |
316 | ||
317 | if (OK_STAT(s, DRQ_STAT, BAD_R_STAT)) { | |
1da177e4 LT |
318 | unsigned long flags; |
319 | ||
320 | /* local CPU only; some systems need this */ | |
321 | local_irq_save(flags); | |
322 | /* drive returned ID */ | |
323 | do_identify(drive, cmd); | |
324 | /* drive responded with ID */ | |
325 | rc = 0; | |
326 | /* clear drive IRQ */ | |
c47137a9 | 327 | (void)ide_read_status(drive); |
1da177e4 LT |
328 | local_irq_restore(flags); |
329 | } else { | |
330 | /* drive refused ID */ | |
331 | rc = 2; | |
332 | } | |
333 | return rc; | |
334 | } | |
335 | ||
336 | /** | |
337 | * try_to_identify - try to identify a drive | |
338 | * @drive: drive to probe | |
339 | * @cmd: command to use | |
340 | * | |
341 | * Issue the identify command and then do IRQ probing to | |
342 | * complete the identification when needed by finding the | |
343 | * IRQ the drive is attached to | |
344 | */ | |
345 | ||
346 | static int try_to_identify (ide_drive_t *drive, u8 cmd) | |
347 | { | |
348 | ide_hwif_t *hwif = HWIF(drive); | |
349 | int retval; | |
350 | int autoprobe = 0; | |
351 | unsigned long cookie = 0; | |
352 | ||
353 | /* | |
354 | * Disable device irq unless we need to | |
355 | * probe for it. Otherwise we'll get spurious | |
356 | * interrupts during the identify-phase that | |
357 | * the irq handler isn't expecting. | |
358 | */ | |
4c3032d8 | 359 | if (hwif->io_ports.ctl_addr) { |
1da177e4 LT |
360 | if (!hwif->irq) { |
361 | autoprobe = 1; | |
362 | cookie = probe_irq_on(); | |
1da177e4 | 363 | } |
81ca6919 | 364 | ide_set_irq(drive, autoprobe); |
1da177e4 LT |
365 | } |
366 | ||
367 | retval = actual_try_to_identify(drive, cmd); | |
368 | ||
369 | if (autoprobe) { | |
370 | int irq; | |
81ca6919 BZ |
371 | |
372 | ide_set_irq(drive, 0); | |
1da177e4 | 373 | /* clear drive IRQ */ |
c47137a9 | 374 | (void)ide_read_status(drive); |
1da177e4 LT |
375 | udelay(5); |
376 | irq = probe_irq_off(cookie); | |
377 | if (!hwif->irq) { | |
378 | if (irq > 0) { | |
379 | hwif->irq = irq; | |
380 | } else { | |
381 | /* Mmmm.. multiple IRQs.. | |
382 | * don't know which was ours | |
383 | */ | |
384 | printk("%s: IRQ probe failed (0x%lx)\n", | |
385 | drive->name, cookie); | |
386 | } | |
387 | } | |
388 | } | |
389 | return retval; | |
390 | } | |
391 | ||
3a5015cc BZ |
392 | static int ide_busy_sleep(ide_hwif_t *hwif) |
393 | { | |
394 | unsigned long timeout = jiffies + WAIT_WORSTCASE; | |
395 | u8 stat; | |
396 | ||
397 | do { | |
398 | msleep(50); | |
4c3032d8 | 399 | stat = hwif->INB(hwif->io_ports.status_addr); |
3a5015cc BZ |
400 | if ((stat & BUSY_STAT) == 0) |
401 | return 0; | |
402 | } while (time_before(jiffies, timeout)); | |
403 | ||
404 | return 1; | |
405 | } | |
1da177e4 LT |
406 | |
407 | /** | |
408 | * do_probe - probe an IDE device | |
409 | * @drive: drive to probe | |
410 | * @cmd: command to use | |
411 | * | |
412 | * do_probe() has the difficult job of finding a drive if it exists, | |
413 | * without getting hung up if it doesn't exist, without trampling on | |
414 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. | |
415 | * | |
416 | * If a drive is "known" to exist (from CMOS or kernel parameters), | |
417 | * but does not respond right away, the probe will "hang in there" | |
418 | * for the maximum wait time (about 30 seconds), otherwise it will | |
419 | * exit much more quickly. | |
420 | * | |
421 | * Returns: 0 device was identified | |
422 | * 1 device timed-out (no response to identify request) | |
423 | * 2 device aborted the command (refused to identify itself) | |
424 | * 3 bad status from device (possible for ATAPI drives) | |
425 | * 4 probe was not attempted because failure was obvious | |
426 | */ | |
427 | ||
428 | static int do_probe (ide_drive_t *drive, u8 cmd) | |
429 | { | |
1da177e4 | 430 | ide_hwif_t *hwif = HWIF(drive); |
4c3032d8 | 431 | struct ide_io_ports *io_ports = &hwif->io_ports; |
57b55275 BZ |
432 | int rc; |
433 | u8 stat; | |
1da177e4 LT |
434 | |
435 | if (drive->present) { | |
436 | /* avoid waiting for inappropriate probes */ | |
437 | if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY)) | |
438 | return 4; | |
439 | } | |
440 | #ifdef DEBUG | |
441 | printk("probing for %s: present=%d, media=%d, probetype=%s\n", | |
442 | drive->name, drive->present, drive->media, | |
443 | (cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI"); | |
444 | #endif | |
445 | ||
446 | /* needed for some systems | |
447 | * (e.g. crw9624 as drive0 with disk as slave) | |
448 | */ | |
449 | msleep(50); | |
450 | SELECT_DRIVE(drive); | |
451 | msleep(50); | |
4c3032d8 | 452 | if (hwif->INB(io_ports->device_addr) != drive->select.all && |
23579a2a | 453 | !drive->present) { |
1da177e4 LT |
454 | if (drive->select.b.unit != 0) { |
455 | /* exit with drive0 selected */ | |
456 | SELECT_DRIVE(&hwif->drives[0]); | |
457 | /* allow BUSY_STAT to assert & clear */ | |
458 | msleep(50); | |
459 | } | |
460 | /* no i/f present: mmm.. this should be a 4 -ml */ | |
461 | return 3; | |
462 | } | |
463 | ||
c47137a9 BZ |
464 | stat = ide_read_status(drive); |
465 | ||
466 | if (OK_STAT(stat, READY_STAT, BUSY_STAT) || | |
1da177e4 LT |
467 | drive->present || cmd == WIN_PIDENTIFY) { |
468 | /* send cmd and wait */ | |
469 | if ((rc = try_to_identify(drive, cmd))) { | |
470 | /* failed: try again */ | |
471 | rc = try_to_identify(drive,cmd); | |
472 | } | |
57b55275 | 473 | |
c47137a9 | 474 | stat = ide_read_status(drive); |
57b55275 BZ |
475 | |
476 | if (stat == (BUSY_STAT | READY_STAT)) | |
1da177e4 LT |
477 | return 4; |
478 | ||
cc12175f | 479 | if (rc == 1 && cmd == WIN_PIDENTIFY) { |
57b55275 BZ |
480 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
481 | "resetting drive\n", drive->name, stat); | |
1da177e4 | 482 | msleep(50); |
e81a3bde | 483 | SELECT_DRIVE(drive); |
1da177e4 | 484 | msleep(50); |
c6dfa867 | 485 | hwif->exec_command(hwif, WIN_SRST); |
3a5015cc | 486 | (void)ide_busy_sleep(hwif); |
1da177e4 LT |
487 | rc = try_to_identify(drive, cmd); |
488 | } | |
57b55275 BZ |
489 | |
490 | /* ensure drive IRQ is clear */ | |
c47137a9 | 491 | stat = ide_read_status(drive); |
57b55275 | 492 | |
1da177e4 | 493 | if (rc == 1) |
57b55275 BZ |
494 | printk(KERN_ERR "%s: no response (status = 0x%02x)\n", |
495 | drive->name, stat); | |
1da177e4 LT |
496 | } else { |
497 | /* not present or maybe ATAPI */ | |
498 | rc = 3; | |
499 | } | |
500 | if (drive->select.b.unit != 0) { | |
501 | /* exit with drive0 selected */ | |
502 | SELECT_DRIVE(&hwif->drives[0]); | |
503 | msleep(50); | |
504 | /* ensure drive irq is clear */ | |
c47137a9 | 505 | (void)ide_read_status(drive); |
1da177e4 LT |
506 | } |
507 | return rc; | |
508 | } | |
509 | ||
510 | /* | |
511 | * | |
512 | */ | |
513 | static void enable_nest (ide_drive_t *drive) | |
514 | { | |
515 | ide_hwif_t *hwif = HWIF(drive); | |
57b55275 | 516 | u8 stat; |
1da177e4 LT |
517 | |
518 | printk("%s: enabling %s -- ", hwif->name, drive->id->model); | |
519 | SELECT_DRIVE(drive); | |
520 | msleep(50); | |
c6dfa867 | 521 | hwif->exec_command(hwif, EXABYTE_ENABLE_NEST); |
3a5015cc BZ |
522 | |
523 | if (ide_busy_sleep(hwif)) { | |
524 | printk(KERN_CONT "failed (timeout)\n"); | |
525 | return; | |
526 | } | |
1da177e4 LT |
527 | |
528 | msleep(50); | |
529 | ||
c47137a9 | 530 | stat = ide_read_status(drive); |
57b55275 BZ |
531 | |
532 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
533 | printk(KERN_CONT "failed (status = 0x%02x)\n", stat); | |
534 | else | |
535 | printk(KERN_CONT "success\n"); | |
1da177e4 LT |
536 | |
537 | /* if !(success||timed-out) */ | |
538 | if (do_probe(drive, WIN_IDENTIFY) >= 2) { | |
539 | /* look for ATAPI device */ | |
540 | (void) do_probe(drive, WIN_PIDENTIFY); | |
541 | } | |
542 | } | |
543 | ||
544 | /** | |
545 | * probe_for_drives - upper level drive probe | |
546 | * @drive: drive to probe for | |
547 | * | |
548 | * probe_for_drive() tests for existence of a given drive using do_probe() | |
549 | * and presents things to the user as needed. | |
550 | * | |
551 | * Returns: 0 no device was found | |
552 | * 1 device was found (note: drive->present might | |
553 | * still be 0) | |
554 | */ | |
555 | ||
556 | static inline u8 probe_for_drive (ide_drive_t *drive) | |
557 | { | |
558 | /* | |
559 | * In order to keep things simple we have an id | |
560 | * block for all drives at all times. If the device | |
561 | * is pre ATA or refuses ATA/ATAPI identify we | |
562 | * will add faked data to this. | |
563 | * | |
564 | * Also note that 0 everywhere means "can't do X" | |
565 | */ | |
566 | ||
f5e3c2fa | 567 | drive->id = kzalloc(SECTOR_WORDS *4, GFP_KERNEL); |
1da177e4 LT |
568 | drive->id_read = 0; |
569 | if(drive->id == NULL) | |
570 | { | |
571 | printk(KERN_ERR "ide: out of memory for id data.\n"); | |
572 | return 0; | |
573 | } | |
1da177e4 LT |
574 | strcpy(drive->id->model, "UNKNOWN"); |
575 | ||
576 | /* skip probing? */ | |
577 | if (!drive->noprobe) | |
578 | { | |
579 | /* if !(success||timed-out) */ | |
580 | if (do_probe(drive, WIN_IDENTIFY) >= 2) { | |
581 | /* look for ATAPI device */ | |
582 | (void) do_probe(drive, WIN_PIDENTIFY); | |
583 | } | |
1da177e4 LT |
584 | if (!drive->present) |
585 | /* drive not found */ | |
586 | return 0; | |
78595575 AC |
587 | if (strstr(drive->id->model, "E X A B Y T E N E S T")) |
588 | enable_nest(drive); | |
1da177e4 LT |
589 | |
590 | /* identification failed? */ | |
591 | if (!drive->id_read) { | |
592 | if (drive->media == ide_disk) { | |
593 | printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", | |
594 | drive->name, drive->cyl, | |
595 | drive->head, drive->sect); | |
596 | } else if (drive->media == ide_cdrom) { | |
597 | printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); | |
598 | } else { | |
599 | /* nuke it */ | |
600 | printk(KERN_WARNING "%s: Unknown device on bus refused identification. Ignoring.\n", drive->name); | |
601 | drive->present = 0; | |
602 | } | |
603 | } | |
604 | /* drive was found */ | |
605 | } | |
606 | if(!drive->present) | |
607 | return 0; | |
608 | /* The drive wasn't being helpful. Add generic info only */ | |
609 | if (drive->id_read == 0) { | |
610 | generic_id(drive); | |
611 | return 1; | |
612 | } | |
613 | ||
614 | if (drive->media == ide_disk) { | |
615 | ide_disk_init_chs(drive); | |
616 | ide_disk_init_mult_count(drive); | |
617 | } | |
618 | ||
619 | return drive->present; | |
620 | } | |
621 | ||
622 | static void hwif_release_dev (struct device *dev) | |
623 | { | |
624 | ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); | |
625 | ||
f36d4024 | 626 | complete(&hwif->gendev_rel_comp); |
1da177e4 LT |
627 | } |
628 | ||
f74c9141 | 629 | static int ide_register_port(ide_hwif_t *hwif) |
1da177e4 | 630 | { |
349ae23f RD |
631 | int ret; |
632 | ||
1da177e4 LT |
633 | /* register with global device tree */ |
634 | strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE); | |
635 | hwif->gendev.driver_data = hwif; | |
636 | if (hwif->gendev.parent == NULL) { | |
36501650 BZ |
637 | if (hwif->dev) |
638 | hwif->gendev.parent = hwif->dev; | |
1da177e4 LT |
639 | else |
640 | /* Would like to do = &device_legacy */ | |
641 | hwif->gendev.parent = NULL; | |
642 | } | |
643 | hwif->gendev.release = hwif_release_dev; | |
349ae23f | 644 | ret = device_register(&hwif->gendev); |
f74c9141 | 645 | if (ret < 0) { |
349ae23f | 646 | printk(KERN_WARNING "IDE: %s: device_register error: %d\n", |
eb63963a | 647 | __func__, ret); |
f74c9141 BZ |
648 | goto out; |
649 | } | |
650 | ||
716ad875 GKH |
651 | hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev, |
652 | MKDEV(0, 0), hwif, hwif->name); | |
f74c9141 BZ |
653 | if (IS_ERR(hwif->portdev)) { |
654 | ret = PTR_ERR(hwif->portdev); | |
655 | device_unregister(&hwif->gendev); | |
656 | } | |
f74c9141 BZ |
657 | out: |
658 | return ret; | |
1da177e4 LT |
659 | } |
660 | ||
c860a8f2 BZ |
661 | /** |
662 | * ide_port_wait_ready - wait for port to become ready | |
663 | * @hwif: IDE port | |
664 | * | |
665 | * This is needed on some PPCs and a bunch of BIOS-less embedded | |
666 | * platforms. Typical cases are: | |
667 | * | |
668 | * - The firmware hard reset the disk before booting the kernel, | |
669 | * the drive is still doing it's poweron-reset sequence, that | |
670 | * can take up to 30 seconds. | |
671 | * | |
672 | * - The firmware does nothing (or no firmware), the device is | |
673 | * still in POST state (same as above actually). | |
674 | * | |
675 | * - Some CD/DVD/Writer combo drives tend to drive the bus during | |
676 | * their reset sequence even when they are non-selected slave | |
677 | * devices, thus preventing discovery of the main HD. | |
678 | * | |
679 | * Doing this wait-for-non-busy should not harm any existing | |
680 | * configuration and fix some issues like the above. | |
681 | * | |
682 | * BenH. | |
683 | * | |
684 | * Returns 0 on success, error code (< 0) otherwise. | |
685 | */ | |
686 | ||
687 | static int ide_port_wait_ready(ide_hwif_t *hwif) | |
1da177e4 | 688 | { |
8266105b | 689 | int unit, rc; |
1da177e4 LT |
690 | |
691 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); | |
692 | ||
693 | /* Let HW settle down a bit from whatever init state we | |
694 | * come from */ | |
695 | mdelay(2); | |
696 | ||
697 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, | |
698 | * I know of at least one disk who takes 31 seconds, I use 35 | |
699 | * here to be safe | |
700 | */ | |
701 | rc = ide_wait_not_busy(hwif, 35000); | |
702 | if (rc) | |
703 | return rc; | |
704 | ||
705 | /* Now make sure both master & slave are ready */ | |
8266105b JS |
706 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
707 | ide_drive_t *drive = &hwif->drives[unit]; | |
708 | ||
709 | /* Ignore disks that we will not probe for later. */ | |
710 | if (!drive->noprobe || drive->present) { | |
711 | SELECT_DRIVE(drive); | |
81ca6919 | 712 | ide_set_irq(drive, 1); |
8266105b JS |
713 | mdelay(2); |
714 | rc = ide_wait_not_busy(hwif, 35000); | |
715 | if (rc) | |
716 | goto out; | |
717 | } else | |
718 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", | |
719 | drive->name); | |
720 | } | |
721 | out: | |
1da177e4 | 722 | /* Exit function with master reselected (let's be sane) */ |
8266105b JS |
723 | if (unit) |
724 | SELECT_DRIVE(&hwif->drives[0]); | |
725 | ||
1da177e4 LT |
726 | return rc; |
727 | } | |
728 | ||
729 | /** | |
730 | * ide_undecoded_slave - look for bad CF adapters | |
f01393e4 | 731 | * @drive1: drive |
1da177e4 LT |
732 | * |
733 | * Analyse the drives on the interface and attempt to decide if we | |
734 | * have the same drive viewed twice. This occurs with crap CF adapters | |
735 | * and PCMCIA sometimes. | |
736 | */ | |
737 | ||
f01393e4 | 738 | void ide_undecoded_slave(ide_drive_t *drive1) |
1da177e4 | 739 | { |
f01393e4 | 740 | ide_drive_t *drive0 = &drive1->hwif->drives[0]; |
1da177e4 | 741 | |
f01393e4 | 742 | if ((drive1->dn & 1) == 0 || drive0->present == 0) |
1da177e4 LT |
743 | return; |
744 | ||
745 | /* If the models don't match they are not the same product */ | |
746 | if (strcmp(drive0->id->model, drive1->id->model)) | |
747 | return; | |
748 | ||
749 | /* Serial numbers do not match */ | |
750 | if (strncmp(drive0->id->serial_no, drive1->id->serial_no, 20)) | |
751 | return; | |
752 | ||
753 | /* No serial number, thankfully very rare for CF */ | |
754 | if (drive0->id->serial_no[0] == 0) | |
755 | return; | |
756 | ||
757 | /* Appears to be an IDE flash adapter with decode bugs */ | |
758 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); | |
759 | ||
760 | drive1->present = 0; | |
761 | } | |
762 | ||
763 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); | |
764 | ||
9d501529 | 765 | static int ide_probe_port(ide_hwif_t *hwif) |
1da177e4 | 766 | { |
1da177e4 LT |
767 | unsigned long flags; |
768 | unsigned int irqd; | |
a14dc574 BZ |
769 | int unit, rc = -ENODEV; |
770 | ||
771 | BUG_ON(hwif->present); | |
1da177e4 | 772 | |
e53cd458 | 773 | if (hwif->drives[0].noprobe && hwif->drives[1].noprobe) |
9d501529 | 774 | return -EACCES; |
1da177e4 | 775 | |
1da177e4 LT |
776 | /* |
777 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but | |
778 | * we'll install our IRQ driver much later... | |
779 | */ | |
780 | irqd = hwif->irq; | |
781 | if (irqd) | |
782 | disable_irq(hwif->irq); | |
783 | ||
784 | local_irq_set(flags); | |
785 | ||
c860a8f2 | 786 | if (ide_port_wait_ready(hwif) == -EBUSY) |
1da177e4 LT |
787 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
788 | ||
789 | /* | |
f367bed0 BZ |
790 | * Second drive should only exist if first drive was found, |
791 | * but a lot of cdrom drives are configured as single slaves. | |
1da177e4 | 792 | */ |
f367bed0 | 793 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
1da177e4 LT |
794 | ide_drive_t *drive = &hwif->drives[unit]; |
795 | drive->dn = (hwif->channel ? 2 : 0) + unit; | |
796 | (void) probe_for_drive(drive); | |
a14dc574 BZ |
797 | if (drive->present) |
798 | rc = 0; | |
1da177e4 | 799 | } |
e460a597 | 800 | |
1da177e4 | 801 | local_irq_restore(flags); |
e460a597 | 802 | |
1da177e4 LT |
803 | /* |
804 | * Use cached IRQ number. It might be (and is...) changed by probe | |
805 | * code above | |
806 | */ | |
807 | if (irqd) | |
808 | enable_irq(irqd); | |
809 | ||
a14dc574 | 810 | return rc; |
e84e7ea7 BZ |
811 | } |
812 | ||
813 | static void ide_port_tune_devices(ide_hwif_t *hwif) | |
814 | { | |
ac95beed | 815 | const struct ide_port_ops *port_ops = hwif->port_ops; |
e84e7ea7 BZ |
816 | int unit; |
817 | ||
f01393e4 BZ |
818 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
819 | ide_drive_t *drive = &hwif->drives[unit]; | |
820 | ||
ac95beed BZ |
821 | if (drive->present && port_ops && port_ops->quirkproc) |
822 | port_ops->quirkproc(drive); | |
f01393e4 | 823 | } |
0380dad4 | 824 | |
1da177e4 LT |
825 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
826 | ide_drive_t *drive = &hwif->drives[unit]; | |
827 | ||
828 | if (drive->present) { | |
207daeaa | 829 | ide_set_max_pio(drive); |
1da177e4 | 830 | |
1da177e4 LT |
831 | drive->nice1 = 1; |
832 | ||
5e37bdc0 | 833 | if (hwif->dma_ops) |
8c0697cc | 834 | ide_set_dma(drive); |
1da177e4 LT |
835 | } |
836 | } | |
208a08f7 KG |
837 | |
838 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
839 | ide_drive_t *drive = &hwif->drives[unit]; | |
840 | ||
807b90d0 | 841 | if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) |
208a08f7 KG |
842 | drive->no_io_32bit = 1; |
843 | else | |
844 | drive->no_io_32bit = drive->id->dword_io ? 1 : 0; | |
845 | } | |
1da177e4 LT |
846 | } |
847 | ||
1da177e4 LT |
848 | #if MAX_HWIFS > 1 |
849 | /* | |
850 | * save_match() is used to simplify logic in init_irq() below. | |
851 | * | |
852 | * A loophole here is that we may not know about a particular | |
853 | * hwif's irq until after that hwif is actually probed/initialized.. | |
854 | * This could be a problem for the case where an hwif is on a | |
855 | * dual interface that requires serialization (eg. cmd640) and another | |
856 | * hwif using one of the same irqs is initialized beforehand. | |
857 | * | |
858 | * This routine detects and reports such situations, but does not fix them. | |
859 | */ | |
860 | static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match) | |
861 | { | |
862 | ide_hwif_t *m = *match; | |
863 | ||
864 | if (m && m->hwgroup && m->hwgroup != new->hwgroup) { | |
865 | if (!new->hwgroup) | |
866 | return; | |
867 | printk("%s: potential irq problem with %s and %s\n", | |
868 | hwif->name, new->name, m->name); | |
869 | } | |
870 | if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */ | |
871 | *match = new; | |
872 | } | |
873 | #endif /* MAX_HWIFS > 1 */ | |
874 | ||
875 | /* | |
876 | * init request queue | |
877 | */ | |
878 | static int ide_init_queue(ide_drive_t *drive) | |
879 | { | |
165125e1 | 880 | struct request_queue *q; |
1da177e4 LT |
881 | ide_hwif_t *hwif = HWIF(drive); |
882 | int max_sectors = 256; | |
883 | int max_sg_entries = PRD_ENTRIES; | |
884 | ||
885 | /* | |
886 | * Our default set up assumes the normal IDE case, | |
887 | * that is 64K segmenting, standard PRD setup | |
888 | * and LBA28. Some drivers then impose their own | |
889 | * limits and LBA48 we could raise it but as yet | |
890 | * do not. | |
891 | */ | |
1946089a | 892 | |
556e58fe | 893 | q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif)); |
1da177e4 LT |
894 | if (!q) |
895 | return 1; | |
896 | ||
897 | q->queuedata = drive; | |
898 | blk_queue_segment_boundary(q, 0xffff); | |
899 | ||
1da177e4 LT |
900 | if (hwif->rqsize < max_sectors) |
901 | max_sectors = hwif->rqsize; | |
902 | blk_queue_max_sectors(q, max_sectors); | |
903 | ||
904 | #ifdef CONFIG_PCI | |
905 | /* When we have an IOMMU, we may have a problem where pci_map_sg() | |
906 | * creates segments that don't completely match our boundary | |
907 | * requirements and thus need to be broken up again. Because it | |
908 | * doesn't align properly either, we may actually have to break up | |
909 | * to more segments than what was we got in the first place, a max | |
910 | * worst case is twice as many. | |
911 | * This will be fixed once we teach pci_map_sg() about our boundary | |
912 | * requirements, hopefully soon. *FIXME* | |
913 | */ | |
914 | if (!PCI_DMA_BUS_IS_PHYS) | |
915 | max_sg_entries >>= 1; | |
916 | #endif /* CONFIG_PCI */ | |
917 | ||
918 | blk_queue_max_hw_segments(q, max_sg_entries); | |
919 | blk_queue_max_phys_segments(q, max_sg_entries); | |
920 | ||
921 | /* assign drive queue */ | |
922 | drive->queue = q; | |
923 | ||
924 | /* needs drive->queue to be set */ | |
925 | ide_toggle_bounce(drive, 1); | |
926 | ||
1da177e4 LT |
927 | return 0; |
928 | } | |
929 | ||
0947e0dc BZ |
930 | static void ide_add_drive_to_hwgroup(ide_drive_t *drive) |
931 | { | |
932 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
933 | ||
934 | spin_lock_irq(&ide_lock); | |
935 | if (!hwgroup->drive) { | |
936 | /* first drive for hwgroup. */ | |
937 | drive->next = drive; | |
938 | hwgroup->drive = drive; | |
939 | hwgroup->hwif = HWIF(hwgroup->drive); | |
940 | } else { | |
941 | drive->next = hwgroup->drive->next; | |
942 | hwgroup->drive->next = drive; | |
943 | } | |
944 | spin_unlock_irq(&ide_lock); | |
945 | } | |
946 | ||
d5bc6592 BZ |
947 | /* |
948 | * For any present drive: | |
949 | * - allocate the block device queue | |
950 | * - link drive into the hwgroup | |
951 | */ | |
952 | static void ide_port_setup_devices(ide_hwif_t *hwif) | |
953 | { | |
954 | int i; | |
955 | ||
26042d05 | 956 | mutex_lock(&ide_cfg_mtx); |
d5bc6592 BZ |
957 | for (i = 0; i < MAX_DRIVES; i++) { |
958 | ide_drive_t *drive = &hwif->drives[i]; | |
959 | ||
960 | if (!drive->present) | |
961 | continue; | |
962 | ||
963 | if (ide_init_queue(drive)) { | |
964 | printk(KERN_ERR "ide: failed to init %s\n", | |
965 | drive->name); | |
966 | continue; | |
967 | } | |
968 | ||
969 | ide_add_drive_to_hwgroup(drive); | |
970 | } | |
26042d05 | 971 | mutex_unlock(&ide_cfg_mtx); |
d5bc6592 BZ |
972 | } |
973 | ||
1da177e4 LT |
974 | /* |
975 | * This routine sets up the irq for an ide interface, and creates a new | |
976 | * hwgroup for the irq/hwif if none was previously assigned. | |
977 | * | |
978 | * Much of the code is for correctly detecting/handling irq sharing | |
979 | * and irq serialization situations. This is somewhat complex because | |
980 | * it handles static as well as dynamic (PCMCIA) IDE interfaces. | |
1da177e4 LT |
981 | */ |
982 | static int init_irq (ide_hwif_t *hwif) | |
983 | { | |
4c3032d8 | 984 | struct ide_io_ports *io_ports = &hwif->io_ports; |
1da177e4 LT |
985 | unsigned int index; |
986 | ide_hwgroup_t *hwgroup; | |
987 | ide_hwif_t *match = NULL; | |
988 | ||
989 | ||
990 | BUG_ON(in_interrupt()); | |
991 | BUG_ON(irqs_disabled()); | |
556e58fe RT |
992 | BUG_ON(hwif == NULL); |
993 | ||
ef29888e | 994 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
995 | hwif->hwgroup = NULL; |
996 | #if MAX_HWIFS > 1 | |
997 | /* | |
998 | * Group up with any other hwifs that share our irq(s). | |
999 | */ | |
1000 | for (index = 0; index < MAX_HWIFS; index++) { | |
1001 | ide_hwif_t *h = &ide_hwifs[index]; | |
1002 | if (h->hwgroup) { /* scan only initialized hwif's */ | |
1003 | if (hwif->irq == h->irq) { | |
1004 | hwif->sharing_irq = h->sharing_irq = 1; | |
1005 | if (hwif->chipset != ide_pci || | |
1006 | h->chipset != ide_pci) { | |
1007 | save_match(hwif, h, &match); | |
1008 | } | |
1009 | } | |
1010 | if (hwif->serialized) { | |
1011 | if (hwif->mate && hwif->mate->irq == h->irq) | |
1012 | save_match(hwif, h, &match); | |
1013 | } | |
1014 | if (h->serialized) { | |
1015 | if (h->mate && hwif->irq == h->mate->irq) | |
1016 | save_match(hwif, h, &match); | |
1017 | } | |
1018 | } | |
1019 | } | |
1020 | #endif /* MAX_HWIFS > 1 */ | |
1021 | /* | |
1022 | * If we are still without a hwgroup, then form a new one | |
1023 | */ | |
1024 | if (match) { | |
1025 | hwgroup = match->hwgroup; | |
1026 | hwif->hwgroup = hwgroup; | |
1027 | /* | |
1028 | * Link us into the hwgroup. | |
1029 | * This must be done early, do ensure that unexpected_intr | |
1030 | * can find the hwif and prevent irq storms. | |
1031 | * No drives are attached to the new hwif, choose_drive | |
1032 | * can't do anything stupid (yet). | |
1033 | * Add ourself as the 2nd entry to the hwgroup->hwif | |
1034 | * linked list, the first entry is the hwif that owns | |
1035 | * hwgroup->handler - do not change that. | |
1036 | */ | |
1037 | spin_lock_irq(&ide_lock); | |
1038 | hwif->next = hwgroup->hwif->next; | |
1039 | hwgroup->hwif->next = hwif; | |
cae5c820 | 1040 | BUG_ON(hwif->next == hwif); |
1da177e4 LT |
1041 | spin_unlock_irq(&ide_lock); |
1042 | } else { | |
422278ef BZ |
1043 | hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO, |
1044 | hwif_to_node(hwif)); | |
1045 | if (hwgroup == NULL) | |
1046 | goto out_up; | |
1da177e4 LT |
1047 | |
1048 | hwif->hwgroup = hwgroup; | |
422278ef | 1049 | hwgroup->hwif = hwif->next = hwif; |
1da177e4 | 1050 | |
1da177e4 LT |
1051 | init_timer(&hwgroup->timer); |
1052 | hwgroup->timer.function = &ide_timer_expiry; | |
1053 | hwgroup->timer.data = (unsigned long) hwgroup; | |
1054 | } | |
1055 | ||
1056 | /* | |
1057 | * Allocate the irq, if not already obtained for another hwif | |
1058 | */ | |
1059 | if (!match || match->irq != hwif->irq) { | |
7b5da4be | 1060 | int sa = 0; |
7b892806 | 1061 | #if defined(__mc68000__) |
362537b9 | 1062 | sa = IRQF_SHARED; |
e1771e20 | 1063 | #endif /* __mc68000__ */ |
1da177e4 | 1064 | |
7b5da4be | 1065 | if (IDE_CHIPSET_IS_PCI(hwif->chipset)) |
362537b9 | 1066 | sa = IRQF_SHARED; |
1da177e4 | 1067 | |
4c3032d8 | 1068 | if (io_ports->ctl_addr) |
1da177e4 | 1069 | /* clear nIEN */ |
ff074883 | 1070 | hwif->OUTBSYNC(hwif, ATA_DEVCTL_OBS, io_ports->ctl_addr); |
1da177e4 LT |
1071 | |
1072 | if (request_irq(hwif->irq,&ide_intr,sa,hwif->name,hwgroup)) | |
1073 | goto out_unlink; | |
1074 | } | |
1075 | ||
8a0e7e14 BZ |
1076 | if (!hwif->rqsize) { |
1077 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || | |
1078 | (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) | |
1079 | hwif->rqsize = 256; | |
1080 | else | |
1081 | hwif->rqsize = 65536; | |
1082 | } | |
1083 | ||
7b892806 | 1084 | #if !defined(__mc68000__) |
1da177e4 | 1085 | printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name, |
4c3032d8 BZ |
1086 | io_ports->data_addr, io_ports->status_addr, |
1087 | io_ports->ctl_addr, hwif->irq); | |
1da177e4 LT |
1088 | #else |
1089 | printk("%s at 0x%08lx on irq %d", hwif->name, | |
4c3032d8 | 1090 | io_ports->data_addr, hwif->irq); |
7b892806 | 1091 | #endif /* __mc68000__ */ |
1da177e4 LT |
1092 | if (match) |
1093 | printk(" (%sed with %s)", | |
1094 | hwif->sharing_irq ? "shar" : "serializ", match->name); | |
1095 | printk("\n"); | |
d5bc6592 | 1096 | |
ef29888e | 1097 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1098 | return 0; |
1099 | out_unlink: | |
fbd13088 | 1100 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 1101 | out_up: |
ef29888e | 1102 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1103 | return 1; |
1104 | } | |
1105 | ||
1106 | static int ata_lock(dev_t dev, void *data) | |
1107 | { | |
1108 | /* FIXME: we want to pin hwif down */ | |
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) | |
1113 | { | |
1114 | ide_hwif_t *hwif = data; | |
1115 | int unit = *part >> PARTN_BITS; | |
1116 | ide_drive_t *drive = &hwif->drives[unit]; | |
1117 | if (!drive->present) | |
1118 | return NULL; | |
1119 | ||
1120 | if (drive->media == ide_disk) | |
1121 | request_module("ide-disk"); | |
1122 | if (drive->scsi) | |
1123 | request_module("ide-scsi"); | |
1124 | if (drive->media == ide_cdrom || drive->media == ide_optical) | |
1125 | request_module("ide-cd"); | |
1126 | if (drive->media == ide_tape) | |
1127 | request_module("ide-tape"); | |
1128 | if (drive->media == ide_floppy) | |
1129 | request_module("ide-floppy"); | |
1130 | ||
1131 | return NULL; | |
1132 | } | |
1133 | ||
1134 | static struct kobject *exact_match(dev_t dev, int *part, void *data) | |
1135 | { | |
1136 | struct gendisk *p = data; | |
1137 | *part &= (1 << PARTN_BITS) - 1; | |
edfaa7c3 | 1138 | return &p->dev.kobj; |
1da177e4 LT |
1139 | } |
1140 | ||
1141 | static int exact_lock(dev_t dev, void *data) | |
1142 | { | |
1143 | struct gendisk *p = data; | |
1144 | ||
1145 | if (!get_disk(p)) | |
1146 | return -1; | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | void ide_register_region(struct gendisk *disk) | |
1151 | { | |
1152 | blk_register_region(MKDEV(disk->major, disk->first_minor), | |
1153 | disk->minors, NULL, exact_match, exact_lock, disk); | |
1154 | } | |
1155 | ||
1156 | EXPORT_SYMBOL_GPL(ide_register_region); | |
1157 | ||
1158 | void ide_unregister_region(struct gendisk *disk) | |
1159 | { | |
1160 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), | |
1161 | disk->minors); | |
1162 | } | |
1163 | ||
1164 | EXPORT_SYMBOL_GPL(ide_unregister_region); | |
1165 | ||
1166 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) | |
1167 | { | |
1168 | ide_hwif_t *hwif = drive->hwif; | |
1169 | unsigned int unit = (drive->select.all >> 4) & 1; | |
1170 | ||
1171 | disk->major = hwif->major; | |
1172 | disk->first_minor = unit << PARTN_BITS; | |
1173 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); | |
1174 | disk->queue = drive->queue; | |
1175 | } | |
1176 | ||
1177 | EXPORT_SYMBOL_GPL(ide_init_disk); | |
1178 | ||
8604affd BZ |
1179 | static void ide_remove_drive_from_hwgroup(ide_drive_t *drive) |
1180 | { | |
1181 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
1182 | ||
1183 | if (drive == drive->next) { | |
1184 | /* special case: last drive from hwgroup. */ | |
1185 | BUG_ON(hwgroup->drive != drive); | |
1186 | hwgroup->drive = NULL; | |
1187 | } else { | |
1188 | ide_drive_t *walk; | |
1189 | ||
1190 | walk = hwgroup->drive; | |
1191 | while (walk->next != drive) | |
1192 | walk = walk->next; | |
1193 | walk->next = drive->next; | |
1194 | if (hwgroup->drive == drive) { | |
1195 | hwgroup->drive = drive->next; | |
1196 | hwgroup->hwif = hwgroup->drive->hwif; | |
1197 | } | |
1198 | } | |
1199 | BUG_ON(hwgroup->drive == drive); | |
1200 | } | |
1201 | ||
1da177e4 LT |
1202 | static void drive_release_dev (struct device *dev) |
1203 | { | |
1204 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); | |
1205 | ||
5b0c4b30 BZ |
1206 | ide_proc_unregister_device(drive); |
1207 | ||
8604affd | 1208 | spin_lock_irq(&ide_lock); |
8604affd | 1209 | ide_remove_drive_from_hwgroup(drive); |
6044ec88 JJ |
1210 | kfree(drive->id); |
1211 | drive->id = NULL; | |
8604affd BZ |
1212 | drive->present = 0; |
1213 | /* Messed up locking ... */ | |
1214 | spin_unlock_irq(&ide_lock); | |
1215 | blk_cleanup_queue(drive->queue); | |
1216 | spin_lock_irq(&ide_lock); | |
1217 | drive->queue = NULL; | |
1218 | spin_unlock_irq(&ide_lock); | |
1219 | ||
f36d4024 | 1220 | complete(&drive->gendev_rel_comp); |
1da177e4 LT |
1221 | } |
1222 | ||
1da177e4 LT |
1223 | static int hwif_init(ide_hwif_t *hwif) |
1224 | { | |
1225 | int old_irq; | |
1226 | ||
1da177e4 | 1227 | if (!hwif->irq) { |
a861beb1 | 1228 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
4c3032d8 | 1229 | if (!hwif->irq) { |
1da177e4 | 1230 | printk("%s: DISABLED, NO IRQ\n", hwif->name); |
48535651 | 1231 | return 0; |
1da177e4 LT |
1232 | } |
1233 | } | |
1da177e4 | 1234 | |
1da177e4 LT |
1235 | if (register_blkdev(hwif->major, hwif->name)) |
1236 | return 0; | |
1237 | ||
1238 | if (!hwif->sg_max_nents) | |
1239 | hwif->sg_max_nents = PRD_ENTRIES; | |
1240 | ||
45711f1a | 1241 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
1da177e4 LT |
1242 | GFP_KERNEL); |
1243 | if (!hwif->sg_table) { | |
1244 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); | |
1245 | goto out; | |
1246 | } | |
45711f1a JA |
1247 | |
1248 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); | |
1da177e4 LT |
1249 | |
1250 | if (init_irq(hwif) == 0) | |
1251 | goto done; | |
1252 | ||
1253 | old_irq = hwif->irq; | |
1254 | /* | |
1255 | * It failed to initialise. Find the default IRQ for | |
1256 | * this port and try that. | |
1257 | */ | |
a861beb1 | 1258 | hwif->irq = __ide_default_irq(hwif->io_ports.data_addr); |
4c3032d8 | 1259 | if (!hwif->irq) { |
1da177e4 LT |
1260 | printk("%s: Disabled unable to get IRQ %d.\n", |
1261 | hwif->name, old_irq); | |
1262 | goto out; | |
1263 | } | |
1264 | if (init_irq(hwif)) { | |
1265 | printk("%s: probed IRQ %d and default IRQ %d failed.\n", | |
1266 | hwif->name, old_irq, hwif->irq); | |
1267 | goto out; | |
1268 | } | |
1269 | printk("%s: probed IRQ %d failed, using default.\n", | |
1270 | hwif->name, hwif->irq); | |
1271 | ||
1272 | done: | |
3a4e7c96 BZ |
1273 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
1274 | THIS_MODULE, ata_probe, ata_lock, hwif); | |
1da177e4 LT |
1275 | return 1; |
1276 | ||
1277 | out: | |
1278 | unregister_blkdev(hwif->major, hwif->name); | |
1279 | return 0; | |
1280 | } | |
1281 | ||
9601a607 BZ |
1282 | static void hwif_register_devices(ide_hwif_t *hwif) |
1283 | { | |
1284 | unsigned int i; | |
1285 | ||
1286 | for (i = 0; i < MAX_DRIVES; i++) { | |
1287 | ide_drive_t *drive = &hwif->drives[i]; | |
c5d70cc7 BZ |
1288 | struct device *dev = &drive->gendev; |
1289 | int ret; | |
9601a607 | 1290 | |
c5d70cc7 BZ |
1291 | if (!drive->present) |
1292 | continue; | |
9601a607 | 1293 | |
c5d70cc7 BZ |
1294 | ide_add_generic_settings(drive); |
1295 | ||
1296 | snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i); | |
1297 | dev->parent = &hwif->gendev; | |
1298 | dev->bus = &ide_bus_type; | |
1299 | dev->driver_data = drive; | |
1300 | dev->release = drive_release_dev; | |
1301 | ||
1302 | ret = device_register(dev); | |
1303 | if (ret < 0) | |
1304 | printk(KERN_WARNING "IDE: %s: device_register error: " | |
1305 | "%d\n", __func__, ret); | |
9601a607 BZ |
1306 | } |
1307 | } | |
1308 | ||
7704ca2a BZ |
1309 | static void ide_port_init_devices(ide_hwif_t *hwif) |
1310 | { | |
ac95beed | 1311 | const struct ide_port_ops *port_ops = hwif->port_ops; |
7704ca2a BZ |
1312 | int i; |
1313 | ||
1314 | for (i = 0; i < MAX_DRIVES; i++) { | |
1315 | ide_drive_t *drive = &hwif->drives[i]; | |
1316 | ||
1317 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) | |
1318 | drive->io_32bit = 1; | |
1319 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) | |
1320 | drive->unmask = 1; | |
807b90d0 BZ |
1321 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
1322 | drive->no_unmask = 1; | |
1f2cf8b0 | 1323 | |
e6d95bd1 BZ |
1324 | if (port_ops && port_ops->init_dev) |
1325 | port_ops->init_dev(drive); | |
1326 | } | |
7704ca2a BZ |
1327 | } |
1328 | ||
c413b9b9 BZ |
1329 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
1330 | const struct ide_port_info *d) | |
8447d9d5 | 1331 | { |
b7691646 | 1332 | hwif->channel = port; |
c413b9b9 BZ |
1333 | |
1334 | if (d->chipset) | |
1335 | hwif->chipset = d->chipset; | |
1336 | ||
1337 | if (d->init_iops) | |
1338 | d->init_iops(hwif); | |
1339 | ||
c413b9b9 BZ |
1340 | if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || |
1341 | (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) | |
1342 | hwif->irq = port ? 15 : 14; | |
1343 | ||
23f8e4bf BZ |
1344 | /* ->host_flags may be set by ->init_iops (or even earlier...) */ |
1345 | hwif->host_flags |= d->host_flags; | |
c413b9b9 BZ |
1346 | hwif->pio_mask = d->pio_mask; |
1347 | ||
ac95beed BZ |
1348 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
1349 | if (hwif->chipset != ide_dtc2278 || hwif->channel == 0) | |
1350 | hwif->port_ops = d->port_ops; | |
1351 | ||
c413b9b9 BZ |
1352 | hwif->swdma_mask = d->swdma_mask; |
1353 | hwif->mwdma_mask = d->mwdma_mask; | |
1354 | hwif->ultra_mask = d->udma_mask; | |
1355 | ||
b123f56e BZ |
1356 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
1357 | int rc; | |
1358 | ||
1359 | if (d->init_dma) | |
1360 | rc = d->init_dma(hwif, d); | |
1361 | else | |
1362 | rc = ide_hwif_setup_dma(hwif, d); | |
1363 | ||
1364 | if (rc < 0) { | |
1365 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); | |
ebb00fb5 | 1366 | hwif->dma_base = 0; |
b123f56e BZ |
1367 | hwif->swdma_mask = 0; |
1368 | hwif->mwdma_mask = 0; | |
1369 | hwif->ultra_mask = 0; | |
5e37bdc0 BZ |
1370 | } else if (d->dma_ops) |
1371 | hwif->dma_ops = d->dma_ops; | |
b123f56e | 1372 | } |
c413b9b9 | 1373 | |
1024c5f4 BZ |
1374 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
1375 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) { | |
1376 | if (hwif->mate) | |
1377 | hwif->mate->serialized = hwif->serialized = 1; | |
1378 | } | |
1379 | ||
c413b9b9 BZ |
1380 | if (d->host_flags & IDE_HFLAG_RQSIZE_256) |
1381 | hwif->rqsize = 256; | |
1382 | ||
1383 | /* call chipset specific routine for each enabled port */ | |
1384 | if (d->init_hwif) | |
1385 | d->init_hwif(hwif); | |
c7f6f21a | 1386 | } |
bfa14b42 | 1387 | |
c7f6f21a BZ |
1388 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
1389 | { | |
ac95beed BZ |
1390 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1391 | ||
1392 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { | |
bfa14b42 | 1393 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
ac95beed | 1394 | hwif->cbl = port_ops->cable_detect(hwif); |
bfa14b42 | 1395 | } |
c413b9b9 BZ |
1396 | } |
1397 | ||
f74c9141 BZ |
1398 | static ssize_t store_delete_devices(struct device *portdev, |
1399 | struct device_attribute *attr, | |
1400 | const char *buf, size_t n) | |
1401 | { | |
1402 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1403 | ||
1404 | if (strncmp(buf, "1", n)) | |
1405 | return -EINVAL; | |
1406 | ||
1407 | ide_port_unregister_devices(hwif); | |
1408 | ||
1409 | return n; | |
1410 | }; | |
1411 | ||
1412 | static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices); | |
1413 | ||
1414 | static ssize_t store_scan(struct device *portdev, | |
1415 | struct device_attribute *attr, | |
1416 | const char *buf, size_t n) | |
1417 | { | |
1418 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1419 | ||
1420 | if (strncmp(buf, "1", n)) | |
1421 | return -EINVAL; | |
1422 | ||
1423 | ide_port_unregister_devices(hwif); | |
1424 | ide_port_scan(hwif); | |
1425 | ||
1426 | return n; | |
1427 | }; | |
1428 | ||
1429 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); | |
1430 | ||
1431 | static struct device_attribute *ide_port_attrs[] = { | |
1432 | &dev_attr_delete_devices, | |
1433 | &dev_attr_scan, | |
1434 | NULL | |
1435 | }; | |
1436 | ||
1437 | static int ide_sysfs_register_port(ide_hwif_t *hwif) | |
1438 | { | |
1439 | int i, rc; | |
1440 | ||
1441 | for (i = 0; ide_port_attrs[i]; i++) { | |
1442 | rc = device_create_file(hwif->portdev, ide_port_attrs[i]); | |
1443 | if (rc) | |
1444 | break; | |
1445 | } | |
1446 | ||
1447 | return rc; | |
1448 | } | |
1449 | ||
fe80b937 BZ |
1450 | /** |
1451 | * ide_find_port_slot - find free ide_hwifs[] slot | |
1452 | * @d: IDE port info | |
1453 | * | |
1454 | * Return the new hwif. If we are out of free slots return NULL. | |
1455 | */ | |
1456 | ||
1457 | ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d) | |
1458 | { | |
1459 | ide_hwif_t *hwif; | |
1460 | int i; | |
1461 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; | |
1462 | ||
1463 | /* | |
1464 | * Claim an unassigned slot. | |
1465 | * | |
1466 | * Give preference to claiming other slots before claiming ide0/ide1, | |
1467 | * just in case there's another interface yet-to-be-scanned | |
1468 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1469 | * | |
1470 | * Unless there is a bootable card that does not use the standard | |
1471 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1472 | */ | |
1473 | if (bootable) { | |
e277f91f BZ |
1474 | i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0; |
1475 | ||
1476 | for (; i < MAX_HWIFS; i++) { | |
fe80b937 BZ |
1477 | hwif = &ide_hwifs[i]; |
1478 | if (hwif->chipset == ide_unknown) | |
256c5f8e | 1479 | goto out_found; |
fe80b937 BZ |
1480 | } |
1481 | } else { | |
1482 | for (i = 2; i < MAX_HWIFS; i++) { | |
1483 | hwif = &ide_hwifs[i]; | |
1484 | if (hwif->chipset == ide_unknown) | |
256c5f8e | 1485 | goto out_found; |
fe80b937 BZ |
1486 | } |
1487 | for (i = 0; i < 2 && i < MAX_HWIFS; i++) { | |
1488 | hwif = &ide_hwifs[i]; | |
1489 | if (hwif->chipset == ide_unknown) | |
256c5f8e | 1490 | goto out_found; |
fe80b937 BZ |
1491 | } |
1492 | } | |
1493 | ||
eb3aff55 BZ |
1494 | printk(KERN_ERR "%s: no free slot for interface\n", |
1495 | d ? d->name : "ide"); | |
1496 | ||
fe80b937 | 1497 | return NULL; |
256c5f8e BZ |
1498 | |
1499 | out_found: | |
1500 | ide_init_port_data(hwif, i); | |
1501 | return hwif; | |
fe80b937 BZ |
1502 | } |
1503 | EXPORT_SYMBOL_GPL(ide_find_port_slot); | |
1504 | ||
c97c6aca | 1505 | int ide_device_add_all(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws) |
c413b9b9 BZ |
1506 | { |
1507 | ide_hwif_t *hwif, *mate = NULL; | |
8447d9d5 BZ |
1508 | int i, rc = 0; |
1509 | ||
c413b9b9 | 1510 | for (i = 0; i < MAX_HWIFS; i++) { |
9fd91d95 | 1511 | if (idx[i] == 0xff) { |
c413b9b9 BZ |
1512 | mate = NULL; |
1513 | continue; | |
1514 | } | |
1515 | ||
1516 | hwif = &ide_hwifs[idx[i]]; | |
1517 | ||
c97c6aca | 1518 | ide_init_port_hw(hwif, hws[i]); |
9fd91d95 BZ |
1519 | ide_port_apply_params(hwif); |
1520 | ||
1521 | if (d == NULL) { | |
1522 | mate = NULL; | |
1523 | continue; | |
1524 | } | |
1525 | ||
b7691646 | 1526 | if ((i & 1) && mate) { |
c413b9b9 BZ |
1527 | hwif->mate = mate; |
1528 | mate->mate = hwif; | |
1529 | } | |
1530 | ||
1531 | mate = (i & 1) ? NULL : hwif; | |
1532 | ||
1533 | ide_init_port(hwif, i & 1, d); | |
c7f6f21a | 1534 | ide_port_cable_detect(hwif); |
7704ca2a | 1535 | ide_port_init_devices(hwif); |
c413b9b9 BZ |
1536 | } |
1537 | ||
151575e4 | 1538 | for (i = 0; i < MAX_HWIFS; i++) { |
ba6560aa BZ |
1539 | if (idx[i] == 0xff) |
1540 | continue; | |
1541 | ||
139ddfca BZ |
1542 | hwif = &ide_hwifs[idx[i]]; |
1543 | ||
eb716beb BZ |
1544 | if (ide_probe_port(hwif) == 0) |
1545 | hwif->present = 1; | |
a14dc574 BZ |
1546 | |
1547 | if (hwif->chipset != ide_4drives || !hwif->mate || | |
1548 | !hwif->mate->present) | |
1549 | ide_register_port(hwif); | |
1550 | ||
eb716beb BZ |
1551 | if (hwif->present) |
1552 | ide_port_tune_devices(hwif); | |
2e13093a | 1553 | } |
ba6560aa | 1554 | |
151575e4 | 1555 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1556 | if (idx[i] == 0xff) |
1557 | continue; | |
1558 | ||
1559 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa BZ |
1560 | |
1561 | if (hwif_init(hwif) == 0) { | |
1562 | printk(KERN_INFO "%s: failed to initialize IDE " | |
1563 | "interface\n", hwif->name); | |
48535651 | 1564 | hwif->present = 0; |
ba6560aa BZ |
1565 | rc = -1; |
1566 | continue; | |
1567 | } | |
decdc3f0 | 1568 | |
eb716beb BZ |
1569 | if (hwif->present) |
1570 | ide_port_setup_devices(hwif); | |
26042d05 | 1571 | |
decdc3f0 | 1572 | ide_acpi_init(hwif); |
eb716beb BZ |
1573 | |
1574 | if (hwif->present) | |
1575 | ide_acpi_port_init_devices(hwif); | |
2e13093a BZ |
1576 | } |
1577 | ||
151575e4 | 1578 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1579 | if (idx[i] == 0xff) |
1580 | continue; | |
1581 | ||
1582 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa | 1583 | |
eb716beb BZ |
1584 | if (hwif->chipset == ide_unknown) |
1585 | hwif->chipset = ide_generic; | |
1586 | ||
1587 | if (hwif->present) | |
ba6560aa | 1588 | hwif_register_devices(hwif); |
8447d9d5 BZ |
1589 | } |
1590 | ||
151575e4 | 1591 | for (i = 0; i < MAX_HWIFS; i++) { |
327617e1 BZ |
1592 | if (idx[i] == 0xff) |
1593 | continue; | |
1594 | ||
1595 | hwif = &ide_hwifs[idx[i]]; | |
1596 | ||
eb716beb BZ |
1597 | ide_sysfs_register_port(hwif); |
1598 | ide_proc_register_port(hwif); | |
1599 | ||
1600 | if (hwif->present) | |
d9270a3f | 1601 | ide_proc_port_register_devices(hwif); |
8447d9d5 BZ |
1602 | } |
1603 | ||
1604 | return rc; | |
1605 | } | |
151575e4 BZ |
1606 | EXPORT_SYMBOL_GPL(ide_device_add_all); |
1607 | ||
c97c6aca | 1608 | int ide_device_add(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws) |
151575e4 | 1609 | { |
c97c6aca | 1610 | hw_regs_t *hws_all[MAX_HWIFS]; |
151575e4 BZ |
1611 | u8 idx_all[MAX_HWIFS]; |
1612 | int i; | |
8447d9d5 | 1613 | |
c97c6aca BZ |
1614 | for (i = 0; i < MAX_HWIFS; i++) { |
1615 | hws_all[i] = (i < 4) ? hws[i] : NULL; | |
151575e4 | 1616 | idx_all[i] = (i < 4) ? idx[i] : 0xff; |
c97c6aca | 1617 | } |
151575e4 | 1618 | |
c97c6aca | 1619 | return ide_device_add_all(idx_all, d, hws_all); |
151575e4 | 1620 | } |
8447d9d5 | 1621 | EXPORT_SYMBOL_GPL(ide_device_add); |
2dde7861 BZ |
1622 | |
1623 | void ide_port_scan(ide_hwif_t *hwif) | |
1624 | { | |
9fd91d95 | 1625 | ide_port_apply_params(hwif); |
2dde7861 BZ |
1626 | ide_port_cable_detect(hwif); |
1627 | ide_port_init_devices(hwif); | |
1628 | ||
1629 | if (ide_probe_port(hwif) < 0) | |
1630 | return; | |
1631 | ||
1632 | hwif->present = 1; | |
1633 | ||
1634 | ide_port_tune_devices(hwif); | |
1635 | ide_acpi_port_init_devices(hwif); | |
1636 | ide_port_setup_devices(hwif); | |
1637 | hwif_register_devices(hwif); | |
1638 | ide_proc_port_register_devices(hwif); | |
1639 | } | |
1640 | EXPORT_SYMBOL_GPL(ide_port_scan); | |
3b36f66b | 1641 | |
c97c6aca BZ |
1642 | static void ide_legacy_init_one(u8 *idx, hw_regs_t **hws, hw_regs_t *hw, |
1643 | u8 port_no, const struct ide_port_info *d, | |
d9b819a0 | 1644 | unsigned long config) |
3b36f66b | 1645 | { |
d9b819a0 BZ |
1646 | ide_hwif_t *hwif; |
1647 | unsigned long base, ctl; | |
1648 | int irq; | |
3b36f66b | 1649 | |
d9b819a0 BZ |
1650 | if (port_no == 0) { |
1651 | base = 0x1f0; | |
1652 | ctl = 0x3f6; | |
1653 | irq = 14; | |
1654 | } else { | |
1655 | base = 0x170; | |
1656 | ctl = 0x376; | |
1657 | irq = 15; | |
1658 | } | |
3b36f66b | 1659 | |
d92f1a28 BZ |
1660 | if (!request_region(base, 8, d->name)) { |
1661 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
1662 | d->name, base, base + 7); | |
1663 | return; | |
1664 | } | |
1665 | ||
1666 | if (!request_region(ctl, 1, d->name)) { | |
1667 | printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", | |
1668 | d->name, ctl); | |
1669 | release_region(base, 8); | |
1670 | return; | |
1671 | } | |
1672 | ||
d9b819a0 BZ |
1673 | ide_std_init_ports(hw, base, ctl); |
1674 | hw->irq = irq; | |
d427e836 | 1675 | hw->chipset = d->chipset; |
3b36f66b | 1676 | |
0bfeee7d | 1677 | hwif = ide_find_port_slot(d); |
3b36f66b | 1678 | if (hwif) { |
c97c6aca BZ |
1679 | hwif->chipset = hw->chipset; |
1680 | ||
0bfeee7d BZ |
1681 | if (config) |
1682 | hwif->config_data = config; | |
c97c6aca BZ |
1683 | |
1684 | hws[port_no] = hw; | |
d9b819a0 | 1685 | idx[port_no] = hwif->index; |
3b36f66b | 1686 | } |
d9b819a0 | 1687 | } |
3b36f66b | 1688 | |
d9b819a0 BZ |
1689 | int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config) |
1690 | { | |
1691 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; | |
c97c6aca | 1692 | hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL }; |
0bfeee7d | 1693 | |
d9b819a0 BZ |
1694 | memset(&hw, 0, sizeof(hw)); |
1695 | ||
1696 | if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0) | |
c97c6aca BZ |
1697 | ide_legacy_init_one(idx, hws, &hw[0], 0, d, config); |
1698 | ide_legacy_init_one(idx, hws, &hw[1], 1, d, config); | |
d9b819a0 BZ |
1699 | |
1700 | if (idx[0] == 0xff && idx[1] == 0xff && | |
1701 | (d->host_flags & IDE_HFLAG_SINGLE)) | |
1702 | return -ENOENT; | |
3b36f66b | 1703 | |
c97c6aca | 1704 | ide_device_add(idx, d, hws); |
3b36f66b BZ |
1705 | |
1706 | return 0; | |
1707 | } | |
1708 | EXPORT_SYMBOL_GPL(ide_legacy_device_add); |