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 | ||
42 | /** | |
43 | * generic_id - add a generic drive id | |
44 | * @drive: drive to make an ID block for | |
45 | * | |
46 | * Add a fake id field to the drive we are passed. This allows | |
47 | * use to skip a ton of NULL checks (which people always miss) | |
48 | * and make drive properties unconditional outside of this file | |
49 | */ | |
50 | ||
51 | static void generic_id(ide_drive_t *drive) | |
52 | { | |
53 | drive->id->cyls = drive->cyl; | |
54 | drive->id->heads = drive->head; | |
55 | drive->id->sectors = drive->sect; | |
56 | drive->id->cur_cyls = drive->cyl; | |
57 | drive->id->cur_heads = drive->head; | |
58 | drive->id->cur_sectors = drive->sect; | |
59 | } | |
60 | ||
61 | static void ide_disk_init_chs(ide_drive_t *drive) | |
62 | { | |
63 | struct hd_driveid *id = drive->id; | |
64 | ||
65 | /* Extract geometry if we did not already have one for the drive */ | |
66 | if (!drive->cyl || !drive->head || !drive->sect) { | |
67 | drive->cyl = drive->bios_cyl = id->cyls; | |
68 | drive->head = drive->bios_head = id->heads; | |
69 | drive->sect = drive->bios_sect = id->sectors; | |
70 | } | |
71 | ||
72 | /* Handle logical geometry translation by the drive */ | |
73 | if ((id->field_valid & 1) && id->cur_cyls && | |
74 | id->cur_heads && (id->cur_heads <= 16) && id->cur_sectors) { | |
75 | drive->cyl = id->cur_cyls; | |
76 | drive->head = id->cur_heads; | |
77 | drive->sect = id->cur_sectors; | |
78 | } | |
79 | ||
80 | /* Use physical geometry if what we have still makes no sense */ | |
81 | if (drive->head > 16 && id->heads && id->heads <= 16) { | |
82 | drive->cyl = id->cyls; | |
83 | drive->head = id->heads; | |
84 | drive->sect = id->sectors; | |
85 | } | |
86 | } | |
87 | ||
88 | static void ide_disk_init_mult_count(ide_drive_t *drive) | |
89 | { | |
90 | struct hd_driveid *id = drive->id; | |
91 | ||
92 | drive->mult_count = 0; | |
93 | if (id->max_multsect) { | |
94 | #ifdef CONFIG_IDEDISK_MULTI_MODE | |
95 | id->multsect = ((id->max_multsect/2) > 1) ? id->max_multsect : 0; | |
96 | id->multsect_valid = id->multsect ? 1 : 0; | |
4ee06b7e | 97 | drive->mult_req = id->multsect_valid ? id->max_multsect : 0; |
1da177e4 LT |
98 | drive->special.b.set_multmode = drive->mult_req ? 1 : 0; |
99 | #else /* original, pre IDE-NFG, per request of AC */ | |
4ee06b7e | 100 | drive->mult_req = 0; |
1da177e4 LT |
101 | if (drive->mult_req > id->max_multsect) |
102 | drive->mult_req = id->max_multsect; | |
103 | if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect)) | |
104 | drive->special.b.set_multmode = 1; | |
105 | #endif | |
106 | } | |
107 | } | |
108 | ||
1da177e4 LT |
109 | /** |
110 | * do_identify - identify a drive | |
111 | * @drive: drive to identify | |
112 | * @cmd: command used | |
113 | * | |
114 | * Called when we have issued a drive identify command to | |
115 | * read and parse the results. This function is run with | |
116 | * interrupts disabled. | |
117 | */ | |
118 | ||
119 | static inline void do_identify (ide_drive_t *drive, u8 cmd) | |
120 | { | |
121 | ide_hwif_t *hwif = HWIF(drive); | |
122 | int bswap = 1; | |
123 | struct hd_driveid *id; | |
124 | ||
125 | id = drive->id; | |
126 | /* read 512 bytes of id info */ | |
127 | hwif->ata_input_data(drive, id, SECTOR_WORDS); | |
128 | ||
129 | drive->id_read = 1; | |
130 | local_irq_enable(); | |
7b9f25b5 BZ |
131 | #ifdef DEBUG |
132 | printk(KERN_INFO "%s: dumping identify data\n", drive->name); | |
133 | ide_dump_identify((u8 *)id); | |
134 | #endif | |
1da177e4 LT |
135 | ide_fix_driveid(id); |
136 | ||
e71bc140 | 137 | #if defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA) |
1da177e4 LT |
138 | /* |
139 | * EATA SCSI controllers do a hardware ATA emulation: | |
140 | * Ignore them if there is a driver for them available. | |
141 | */ | |
142 | if ((id->model[0] == 'P' && id->model[1] == 'M') || | |
143 | (id->model[0] == 'S' && id->model[1] == 'K')) { | |
144 | printk("%s: EATA SCSI HBA %.10s\n", drive->name, id->model); | |
145 | goto err_misc; | |
146 | } | |
e71bc140 | 147 | #endif /* CONFIG_SCSI_EATA || CONFIG_SCSI_EATA_PIO */ |
1da177e4 LT |
148 | |
149 | /* | |
150 | * WIN_IDENTIFY returns little-endian info, | |
151 | * WIN_PIDENTIFY *usually* returns little-endian info. | |
152 | */ | |
153 | if (cmd == WIN_PIDENTIFY) { | |
154 | if ((id->model[0] == 'N' && id->model[1] == 'E') /* NEC */ | |
155 | || (id->model[0] == 'F' && id->model[1] == 'X') /* Mitsumi */ | |
156 | || (id->model[0] == 'P' && id->model[1] == 'i'))/* Pioneer */ | |
157 | /* Vertos drives may still be weird */ | |
158 | bswap ^= 1; | |
159 | } | |
160 | ide_fixstring(id->model, sizeof(id->model), bswap); | |
161 | ide_fixstring(id->fw_rev, sizeof(id->fw_rev), bswap); | |
162 | ide_fixstring(id->serial_no, sizeof(id->serial_no), bswap); | |
163 | ||
699b052a TH |
164 | /* we depend on this a lot! */ |
165 | id->model[sizeof(id->model)-1] = '\0'; | |
166 | ||
1da177e4 LT |
167 | if (strstr(id->model, "E X A B Y T E N E S T")) |
168 | goto err_misc; | |
169 | ||
1da177e4 LT |
170 | printk("%s: %s, ", drive->name, id->model); |
171 | drive->present = 1; | |
172 | drive->dead = 0; | |
173 | ||
174 | /* | |
175 | * Check for an ATAPI device | |
176 | */ | |
177 | if (cmd == WIN_PIDENTIFY) { | |
178 | u8 type = (id->config >> 8) & 0x1f; | |
179 | printk("ATAPI "); | |
180 | switch (type) { | |
181 | case ide_floppy: | |
182 | if (!strstr(id->model, "CD-ROM")) { | |
183 | if (!strstr(id->model, "oppy") && | |
184 | !strstr(id->model, "poyp") && | |
185 | !strstr(id->model, "ZIP")) | |
186 | printk("cdrom or floppy?, assuming "); | |
187 | if (drive->media != ide_cdrom) { | |
188 | printk ("FLOPPY"); | |
189 | drive->removable = 1; | |
190 | break; | |
191 | } | |
192 | } | |
193 | /* Early cdrom models used zero */ | |
194 | type = ide_cdrom; | |
195 | case ide_cdrom: | |
196 | drive->removable = 1; | |
197 | #ifdef CONFIG_PPC | |
198 | /* kludge for Apple PowerBook internal zip */ | |
199 | if (!strstr(id->model, "CD-ROM") && | |
200 | strstr(id->model, "ZIP")) { | |
201 | printk ("FLOPPY"); | |
202 | type = ide_floppy; | |
203 | break; | |
204 | } | |
205 | #endif | |
206 | printk ("CD/DVD-ROM"); | |
207 | break; | |
208 | case ide_tape: | |
209 | printk ("TAPE"); | |
210 | break; | |
211 | case ide_optical: | |
212 | printk ("OPTICAL"); | |
213 | drive->removable = 1; | |
214 | break; | |
215 | default: | |
216 | printk("UNKNOWN (type %d)", type); | |
217 | break; | |
218 | } | |
219 | printk (" drive\n"); | |
220 | drive->media = type; | |
221 | /* an ATAPI device ignores DRDY */ | |
222 | drive->ready_stat = 0; | |
223 | return; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Not an ATAPI device: looks like a "regular" hard disk | |
228 | */ | |
98109337 RP |
229 | |
230 | /* | |
231 | * 0x848a = CompactFlash device | |
232 | * These are *not* removable in Linux definition of the term | |
233 | */ | |
234 | ||
235 | if ((id->config != 0x848a) && (id->config & (1<<7))) | |
1da177e4 LT |
236 | drive->removable = 1; |
237 | ||
1da177e4 | 238 | drive->media = ide_disk; |
98109337 | 239 | printk("%s DISK drive\n", (id->config == 0x848a) ? "CFA" : "ATA" ); |
cd3dbc99 | 240 | |
1da177e4 LT |
241 | return; |
242 | ||
243 | err_misc: | |
244 | kfree(id); | |
245 | drive->present = 0; | |
246 | return; | |
247 | } | |
248 | ||
249 | /** | |
250 | * actual_try_to_identify - send ata/atapi identify | |
251 | * @drive: drive to identify | |
252 | * @cmd: command to use | |
253 | * | |
254 | * try_to_identify() sends an ATA(PI) IDENTIFY request to a drive | |
255 | * and waits for a response. It also monitors irqs while this is | |
256 | * happening, in hope of automatically determining which one is | |
257 | * being used by the interface. | |
258 | * | |
259 | * Returns: 0 device was identified | |
260 | * 1 device timed-out (no response to identify request) | |
261 | * 2 device aborted the command (refused to identify itself) | |
262 | */ | |
263 | ||
264 | static int actual_try_to_identify (ide_drive_t *drive, u8 cmd) | |
265 | { | |
266 | ide_hwif_t *hwif = HWIF(drive); | |
c47137a9 | 267 | int use_altstatus = 0, rc; |
1da177e4 LT |
268 | unsigned long timeout; |
269 | u8 s = 0, a = 0; | |
270 | ||
271 | /* take a deep breath */ | |
272 | msleep(50); | |
273 | ||
23579a2a | 274 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) { |
c47137a9 BZ |
275 | a = ide_read_altstatus(drive); |
276 | s = ide_read_status(drive); | |
277 | if ((a ^ s) & ~INDEX_STAT) | |
1da177e4 | 278 | /* ancient Seagate drives, broken interfaces */ |
c47137a9 BZ |
279 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
280 | "instead of ALTSTATUS(0x%02x)\n", | |
281 | drive->name, s, a); | |
282 | else | |
1da177e4 | 283 | /* use non-intrusive polling */ |
c47137a9 BZ |
284 | use_altstatus = 1; |
285 | } | |
1da177e4 LT |
286 | |
287 | /* set features register for atapi | |
288 | * identify command to be sure of reply | |
289 | */ | |
290 | if ((cmd == WIN_PIDENTIFY)) | |
291 | /* disable dma & overlap */ | |
23579a2a | 292 | hwif->OUTB(0, hwif->io_ports[IDE_FEATURE_OFFSET]); |
1da177e4 LT |
293 | |
294 | /* ask drive for ID */ | |
23579a2a | 295 | hwif->OUTB(cmd, hwif->io_ports[IDE_COMMAND_OFFSET]); |
1da177e4 LT |
296 | |
297 | timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; | |
298 | timeout += jiffies; | |
299 | do { | |
300 | if (time_after(jiffies, timeout)) { | |
301 | /* drive timed-out */ | |
302 | return 1; | |
303 | } | |
304 | /* give drive a breather */ | |
305 | msleep(50); | |
c47137a9 BZ |
306 | s = use_altstatus ? ide_read_altstatus(drive) |
307 | : ide_read_status(drive); | |
308 | } while (s & BUSY_STAT); | |
1da177e4 LT |
309 | |
310 | /* wait for IRQ and DRQ_STAT */ | |
311 | msleep(50); | |
c47137a9 BZ |
312 | s = ide_read_status(drive); |
313 | ||
314 | if (OK_STAT(s, DRQ_STAT, BAD_R_STAT)) { | |
1da177e4 LT |
315 | unsigned long flags; |
316 | ||
317 | /* local CPU only; some systems need this */ | |
318 | local_irq_save(flags); | |
319 | /* drive returned ID */ | |
320 | do_identify(drive, cmd); | |
321 | /* drive responded with ID */ | |
322 | rc = 0; | |
323 | /* clear drive IRQ */ | |
c47137a9 | 324 | (void)ide_read_status(drive); |
1da177e4 LT |
325 | local_irq_restore(flags); |
326 | } else { | |
327 | /* drive refused ID */ | |
328 | rc = 2; | |
329 | } | |
330 | return rc; | |
331 | } | |
332 | ||
333 | /** | |
334 | * try_to_identify - try to identify a drive | |
335 | * @drive: drive to probe | |
336 | * @cmd: command to use | |
337 | * | |
338 | * Issue the identify command and then do IRQ probing to | |
339 | * complete the identification when needed by finding the | |
340 | * IRQ the drive is attached to | |
341 | */ | |
342 | ||
343 | static int try_to_identify (ide_drive_t *drive, u8 cmd) | |
344 | { | |
345 | ide_hwif_t *hwif = HWIF(drive); | |
346 | int retval; | |
347 | int autoprobe = 0; | |
348 | unsigned long cookie = 0; | |
349 | ||
350 | /* | |
351 | * Disable device irq unless we need to | |
352 | * probe for it. Otherwise we'll get spurious | |
353 | * interrupts during the identify-phase that | |
354 | * the irq handler isn't expecting. | |
355 | */ | |
23579a2a | 356 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) { |
1da177e4 LT |
357 | if (!hwif->irq) { |
358 | autoprobe = 1; | |
359 | cookie = probe_irq_on(); | |
1da177e4 | 360 | } |
81ca6919 | 361 | ide_set_irq(drive, autoprobe); |
1da177e4 LT |
362 | } |
363 | ||
364 | retval = actual_try_to_identify(drive, cmd); | |
365 | ||
366 | if (autoprobe) { | |
367 | int irq; | |
81ca6919 BZ |
368 | |
369 | ide_set_irq(drive, 0); | |
1da177e4 | 370 | /* clear drive IRQ */ |
c47137a9 | 371 | (void)ide_read_status(drive); |
1da177e4 LT |
372 | udelay(5); |
373 | irq = probe_irq_off(cookie); | |
374 | if (!hwif->irq) { | |
375 | if (irq > 0) { | |
376 | hwif->irq = irq; | |
377 | } else { | |
378 | /* Mmmm.. multiple IRQs.. | |
379 | * don't know which was ours | |
380 | */ | |
381 | printk("%s: IRQ probe failed (0x%lx)\n", | |
382 | drive->name, cookie); | |
383 | } | |
384 | } | |
385 | } | |
386 | return retval; | |
387 | } | |
388 | ||
3a5015cc BZ |
389 | static int ide_busy_sleep(ide_hwif_t *hwif) |
390 | { | |
391 | unsigned long timeout = jiffies + WAIT_WORSTCASE; | |
392 | u8 stat; | |
393 | ||
394 | do { | |
395 | msleep(50); | |
396 | stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]); | |
397 | if ((stat & BUSY_STAT) == 0) | |
398 | return 0; | |
399 | } while (time_before(jiffies, timeout)); | |
400 | ||
401 | return 1; | |
402 | } | |
1da177e4 LT |
403 | |
404 | /** | |
405 | * do_probe - probe an IDE device | |
406 | * @drive: drive to probe | |
407 | * @cmd: command to use | |
408 | * | |
409 | * do_probe() has the difficult job of finding a drive if it exists, | |
410 | * without getting hung up if it doesn't exist, without trampling on | |
411 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. | |
412 | * | |
413 | * If a drive is "known" to exist (from CMOS or kernel parameters), | |
414 | * but does not respond right away, the probe will "hang in there" | |
415 | * for the maximum wait time (about 30 seconds), otherwise it will | |
416 | * exit much more quickly. | |
417 | * | |
418 | * Returns: 0 device was identified | |
419 | * 1 device timed-out (no response to identify request) | |
420 | * 2 device aborted the command (refused to identify itself) | |
421 | * 3 bad status from device (possible for ATAPI drives) | |
422 | * 4 probe was not attempted because failure was obvious | |
423 | */ | |
424 | ||
425 | static int do_probe (ide_drive_t *drive, u8 cmd) | |
426 | { | |
1da177e4 | 427 | ide_hwif_t *hwif = HWIF(drive); |
57b55275 BZ |
428 | int rc; |
429 | u8 stat; | |
1da177e4 LT |
430 | |
431 | if (drive->present) { | |
432 | /* avoid waiting for inappropriate probes */ | |
433 | if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY)) | |
434 | return 4; | |
435 | } | |
436 | #ifdef DEBUG | |
437 | printk("probing for %s: present=%d, media=%d, probetype=%s\n", | |
438 | drive->name, drive->present, drive->media, | |
439 | (cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI"); | |
440 | #endif | |
441 | ||
442 | /* needed for some systems | |
443 | * (e.g. crw9624 as drive0 with disk as slave) | |
444 | */ | |
445 | msleep(50); | |
446 | SELECT_DRIVE(drive); | |
447 | msleep(50); | |
23579a2a BZ |
448 | if (hwif->INB(hwif->io_ports[IDE_SELECT_OFFSET]) != drive->select.all && |
449 | !drive->present) { | |
1da177e4 LT |
450 | if (drive->select.b.unit != 0) { |
451 | /* exit with drive0 selected */ | |
452 | SELECT_DRIVE(&hwif->drives[0]); | |
453 | /* allow BUSY_STAT to assert & clear */ | |
454 | msleep(50); | |
455 | } | |
456 | /* no i/f present: mmm.. this should be a 4 -ml */ | |
457 | return 3; | |
458 | } | |
459 | ||
c47137a9 BZ |
460 | stat = ide_read_status(drive); |
461 | ||
462 | if (OK_STAT(stat, READY_STAT, BUSY_STAT) || | |
1da177e4 LT |
463 | drive->present || cmd == WIN_PIDENTIFY) { |
464 | /* send cmd and wait */ | |
465 | if ((rc = try_to_identify(drive, cmd))) { | |
466 | /* failed: try again */ | |
467 | rc = try_to_identify(drive,cmd); | |
468 | } | |
57b55275 | 469 | |
c47137a9 | 470 | stat = ide_read_status(drive); |
57b55275 BZ |
471 | |
472 | if (stat == (BUSY_STAT | READY_STAT)) | |
1da177e4 LT |
473 | return 4; |
474 | ||
cc12175f | 475 | if (rc == 1 && cmd == WIN_PIDENTIFY) { |
57b55275 BZ |
476 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
477 | "resetting drive\n", drive->name, stat); | |
1da177e4 | 478 | msleep(50); |
23579a2a BZ |
479 | hwif->OUTB(drive->select.all, |
480 | hwif->io_ports[IDE_SELECT_OFFSET]); | |
1da177e4 | 481 | msleep(50); |
23579a2a BZ |
482 | hwif->OUTB(WIN_SRST, |
483 | hwif->io_ports[IDE_COMMAND_OFFSET]); | |
3a5015cc | 484 | (void)ide_busy_sleep(hwif); |
1da177e4 LT |
485 | rc = try_to_identify(drive, cmd); |
486 | } | |
57b55275 BZ |
487 | |
488 | /* ensure drive IRQ is clear */ | |
c47137a9 | 489 | stat = ide_read_status(drive); |
57b55275 | 490 | |
1da177e4 | 491 | if (rc == 1) |
57b55275 BZ |
492 | printk(KERN_ERR "%s: no response (status = 0x%02x)\n", |
493 | drive->name, stat); | |
1da177e4 LT |
494 | } else { |
495 | /* not present or maybe ATAPI */ | |
496 | rc = 3; | |
497 | } | |
498 | if (drive->select.b.unit != 0) { | |
499 | /* exit with drive0 selected */ | |
500 | SELECT_DRIVE(&hwif->drives[0]); | |
501 | msleep(50); | |
502 | /* ensure drive irq is clear */ | |
c47137a9 | 503 | (void)ide_read_status(drive); |
1da177e4 LT |
504 | } |
505 | return rc; | |
506 | } | |
507 | ||
508 | /* | |
509 | * | |
510 | */ | |
511 | static void enable_nest (ide_drive_t *drive) | |
512 | { | |
513 | ide_hwif_t *hwif = HWIF(drive); | |
57b55275 | 514 | u8 stat; |
1da177e4 LT |
515 | |
516 | printk("%s: enabling %s -- ", hwif->name, drive->id->model); | |
517 | SELECT_DRIVE(drive); | |
518 | msleep(50); | |
23579a2a | 519 | hwif->OUTB(EXABYTE_ENABLE_NEST, hwif->io_ports[IDE_COMMAND_OFFSET]); |
3a5015cc BZ |
520 | |
521 | if (ide_busy_sleep(hwif)) { | |
522 | printk(KERN_CONT "failed (timeout)\n"); | |
523 | return; | |
524 | } | |
1da177e4 LT |
525 | |
526 | msleep(50); | |
527 | ||
c47137a9 | 528 | stat = ide_read_status(drive); |
57b55275 BZ |
529 | |
530 | if (!OK_STAT(stat, 0, BAD_STAT)) | |
531 | printk(KERN_CONT "failed (status = 0x%02x)\n", stat); | |
532 | else | |
533 | printk(KERN_CONT "success\n"); | |
1da177e4 LT |
534 | |
535 | /* if !(success||timed-out) */ | |
536 | if (do_probe(drive, WIN_IDENTIFY) >= 2) { | |
537 | /* look for ATAPI device */ | |
538 | (void) do_probe(drive, WIN_PIDENTIFY); | |
539 | } | |
540 | } | |
541 | ||
542 | /** | |
543 | * probe_for_drives - upper level drive probe | |
544 | * @drive: drive to probe for | |
545 | * | |
546 | * probe_for_drive() tests for existence of a given drive using do_probe() | |
547 | * and presents things to the user as needed. | |
548 | * | |
549 | * Returns: 0 no device was found | |
550 | * 1 device was found (note: drive->present might | |
551 | * still be 0) | |
552 | */ | |
553 | ||
554 | static inline u8 probe_for_drive (ide_drive_t *drive) | |
555 | { | |
556 | /* | |
557 | * In order to keep things simple we have an id | |
558 | * block for all drives at all times. If the device | |
559 | * is pre ATA or refuses ATA/ATAPI identify we | |
560 | * will add faked data to this. | |
561 | * | |
562 | * Also note that 0 everywhere means "can't do X" | |
563 | */ | |
564 | ||
f5e3c2fa | 565 | drive->id = kzalloc(SECTOR_WORDS *4, GFP_KERNEL); |
1da177e4 LT |
566 | drive->id_read = 0; |
567 | if(drive->id == NULL) | |
568 | { | |
569 | printk(KERN_ERR "ide: out of memory for id data.\n"); | |
570 | return 0; | |
571 | } | |
1da177e4 LT |
572 | strcpy(drive->id->model, "UNKNOWN"); |
573 | ||
574 | /* skip probing? */ | |
575 | if (!drive->noprobe) | |
576 | { | |
577 | /* if !(success||timed-out) */ | |
578 | if (do_probe(drive, WIN_IDENTIFY) >= 2) { | |
579 | /* look for ATAPI device */ | |
580 | (void) do_probe(drive, WIN_PIDENTIFY); | |
581 | } | |
1da177e4 LT |
582 | if (!drive->present) |
583 | /* drive not found */ | |
584 | return 0; | |
78595575 AC |
585 | if (strstr(drive->id->model, "E X A B Y T E N E S T")) |
586 | enable_nest(drive); | |
1da177e4 LT |
587 | |
588 | /* identification failed? */ | |
589 | if (!drive->id_read) { | |
590 | if (drive->media == ide_disk) { | |
591 | printk(KERN_INFO "%s: non-IDE drive, CHS=%d/%d/%d\n", | |
592 | drive->name, drive->cyl, | |
593 | drive->head, drive->sect); | |
594 | } else if (drive->media == ide_cdrom) { | |
595 | printk(KERN_INFO "%s: ATAPI cdrom (?)\n", drive->name); | |
596 | } else { | |
597 | /* nuke it */ | |
598 | printk(KERN_WARNING "%s: Unknown device on bus refused identification. Ignoring.\n", drive->name); | |
599 | drive->present = 0; | |
600 | } | |
601 | } | |
602 | /* drive was found */ | |
603 | } | |
604 | if(!drive->present) | |
605 | return 0; | |
606 | /* The drive wasn't being helpful. Add generic info only */ | |
607 | if (drive->id_read == 0) { | |
608 | generic_id(drive); | |
609 | return 1; | |
610 | } | |
611 | ||
612 | if (drive->media == ide_disk) { | |
613 | ide_disk_init_chs(drive); | |
614 | ide_disk_init_mult_count(drive); | |
615 | } | |
616 | ||
617 | return drive->present; | |
618 | } | |
619 | ||
620 | static void hwif_release_dev (struct device *dev) | |
621 | { | |
622 | ide_hwif_t *hwif = container_of(dev, ide_hwif_t, gendev); | |
623 | ||
f36d4024 | 624 | complete(&hwif->gendev_rel_comp); |
1da177e4 LT |
625 | } |
626 | ||
f74c9141 | 627 | static int ide_register_port(ide_hwif_t *hwif) |
1da177e4 | 628 | { |
349ae23f RD |
629 | int ret; |
630 | ||
1da177e4 LT |
631 | /* register with global device tree */ |
632 | strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE); | |
633 | hwif->gendev.driver_data = hwif; | |
634 | if (hwif->gendev.parent == NULL) { | |
36501650 BZ |
635 | if (hwif->dev) |
636 | hwif->gendev.parent = hwif->dev; | |
1da177e4 LT |
637 | else |
638 | /* Would like to do = &device_legacy */ | |
639 | hwif->gendev.parent = NULL; | |
640 | } | |
641 | hwif->gendev.release = hwif_release_dev; | |
349ae23f | 642 | ret = device_register(&hwif->gendev); |
f74c9141 | 643 | if (ret < 0) { |
349ae23f | 644 | printk(KERN_WARNING "IDE: %s: device_register error: %d\n", |
eb63963a | 645 | __func__, ret); |
f74c9141 BZ |
646 | goto out; |
647 | } | |
648 | ||
649 | get_device(&hwif->gendev); | |
650 | ||
651 | hwif->portdev = device_create(ide_port_class, &hwif->gendev, | |
652 | MKDEV(0, 0), hwif->name); | |
653 | if (IS_ERR(hwif->portdev)) { | |
654 | ret = PTR_ERR(hwif->portdev); | |
655 | device_unregister(&hwif->gendev); | |
656 | } | |
657 | dev_set_drvdata(hwif->portdev, hwif); | |
658 | out: | |
659 | return ret; | |
1da177e4 LT |
660 | } |
661 | ||
c860a8f2 BZ |
662 | /** |
663 | * ide_port_wait_ready - wait for port to become ready | |
664 | * @hwif: IDE port | |
665 | * | |
666 | * This is needed on some PPCs and a bunch of BIOS-less embedded | |
667 | * platforms. Typical cases are: | |
668 | * | |
669 | * - The firmware hard reset the disk before booting the kernel, | |
670 | * the drive is still doing it's poweron-reset sequence, that | |
671 | * can take up to 30 seconds. | |
672 | * | |
673 | * - The firmware does nothing (or no firmware), the device is | |
674 | * still in POST state (same as above actually). | |
675 | * | |
676 | * - Some CD/DVD/Writer combo drives tend to drive the bus during | |
677 | * their reset sequence even when they are non-selected slave | |
678 | * devices, thus preventing discovery of the main HD. | |
679 | * | |
680 | * Doing this wait-for-non-busy should not harm any existing | |
681 | * configuration and fix some issues like the above. | |
682 | * | |
683 | * BenH. | |
684 | * | |
685 | * Returns 0 on success, error code (< 0) otherwise. | |
686 | */ | |
687 | ||
688 | static int ide_port_wait_ready(ide_hwif_t *hwif) | |
1da177e4 | 689 | { |
8266105b | 690 | int unit, rc; |
1da177e4 LT |
691 | |
692 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); | |
693 | ||
694 | /* Let HW settle down a bit from whatever init state we | |
695 | * come from */ | |
696 | mdelay(2); | |
697 | ||
698 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, | |
699 | * I know of at least one disk who takes 31 seconds, I use 35 | |
700 | * here to be safe | |
701 | */ | |
702 | rc = ide_wait_not_busy(hwif, 35000); | |
703 | if (rc) | |
704 | return rc; | |
705 | ||
706 | /* Now make sure both master & slave are ready */ | |
8266105b JS |
707 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
708 | ide_drive_t *drive = &hwif->drives[unit]; | |
709 | ||
710 | /* Ignore disks that we will not probe for later. */ | |
711 | if (!drive->noprobe || drive->present) { | |
712 | SELECT_DRIVE(drive); | |
81ca6919 | 713 | ide_set_irq(drive, 1); |
8266105b JS |
714 | mdelay(2); |
715 | rc = ide_wait_not_busy(hwif, 35000); | |
716 | if (rc) | |
717 | goto out; | |
718 | } else | |
719 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", | |
720 | drive->name); | |
721 | } | |
722 | out: | |
1da177e4 | 723 | /* Exit function with master reselected (let's be sane) */ |
8266105b JS |
724 | if (unit) |
725 | SELECT_DRIVE(&hwif->drives[0]); | |
726 | ||
1da177e4 LT |
727 | return rc; |
728 | } | |
729 | ||
730 | /** | |
731 | * ide_undecoded_slave - look for bad CF adapters | |
f01393e4 | 732 | * @drive1: drive |
1da177e4 LT |
733 | * |
734 | * Analyse the drives on the interface and attempt to decide if we | |
735 | * have the same drive viewed twice. This occurs with crap CF adapters | |
736 | * and PCMCIA sometimes. | |
737 | */ | |
738 | ||
f01393e4 | 739 | void ide_undecoded_slave(ide_drive_t *drive1) |
1da177e4 | 740 | { |
f01393e4 | 741 | ide_drive_t *drive0 = &drive1->hwif->drives[0]; |
1da177e4 | 742 | |
f01393e4 | 743 | if ((drive1->dn & 1) == 0 || drive0->present == 0) |
1da177e4 LT |
744 | return; |
745 | ||
746 | /* If the models don't match they are not the same product */ | |
747 | if (strcmp(drive0->id->model, drive1->id->model)) | |
748 | return; | |
749 | ||
750 | /* Serial numbers do not match */ | |
751 | if (strncmp(drive0->id->serial_no, drive1->id->serial_no, 20)) | |
752 | return; | |
753 | ||
754 | /* No serial number, thankfully very rare for CF */ | |
755 | if (drive0->id->serial_no[0] == 0) | |
756 | return; | |
757 | ||
758 | /* Appears to be an IDE flash adapter with decode bugs */ | |
759 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); | |
760 | ||
761 | drive1->present = 0; | |
762 | } | |
763 | ||
764 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); | |
765 | ||
9d501529 | 766 | static int ide_probe_port(ide_hwif_t *hwif) |
1da177e4 | 767 | { |
1da177e4 LT |
768 | unsigned long flags; |
769 | unsigned int irqd; | |
a14dc574 BZ |
770 | int unit, rc = -ENODEV; |
771 | ||
772 | BUG_ON(hwif->present); | |
1da177e4 | 773 | |
e53cd458 | 774 | if (hwif->drives[0].noprobe && hwif->drives[1].noprobe) |
9d501529 | 775 | return -EACCES; |
1da177e4 | 776 | |
1da177e4 LT |
777 | /* |
778 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but | |
779 | * we'll install our IRQ driver much later... | |
780 | */ | |
781 | irqd = hwif->irq; | |
782 | if (irqd) | |
783 | disable_irq(hwif->irq); | |
784 | ||
785 | local_irq_set(flags); | |
786 | ||
c860a8f2 | 787 | if (ide_port_wait_ready(hwif) == -EBUSY) |
1da177e4 LT |
788 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
789 | ||
790 | /* | |
f367bed0 BZ |
791 | * Second drive should only exist if first drive was found, |
792 | * but a lot of cdrom drives are configured as single slaves. | |
1da177e4 | 793 | */ |
f367bed0 | 794 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
1da177e4 LT |
795 | ide_drive_t *drive = &hwif->drives[unit]; |
796 | drive->dn = (hwif->channel ? 2 : 0) + unit; | |
797 | (void) probe_for_drive(drive); | |
a14dc574 BZ |
798 | if (drive->present) |
799 | rc = 0; | |
1da177e4 | 800 | } |
e460a597 | 801 | |
1da177e4 | 802 | local_irq_restore(flags); |
e460a597 | 803 | |
1da177e4 LT |
804 | /* |
805 | * Use cached IRQ number. It might be (and is...) changed by probe | |
806 | * code above | |
807 | */ | |
808 | if (irqd) | |
809 | enable_irq(irqd); | |
810 | ||
a14dc574 | 811 | return rc; |
e84e7ea7 BZ |
812 | } |
813 | ||
814 | static void ide_port_tune_devices(ide_hwif_t *hwif) | |
815 | { | |
ac95beed | 816 | const struct ide_port_ops *port_ops = hwif->port_ops; |
e84e7ea7 BZ |
817 | int unit; |
818 | ||
f01393e4 BZ |
819 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
820 | ide_drive_t *drive = &hwif->drives[unit]; | |
821 | ||
ac95beed BZ |
822 | if (drive->present && port_ops && port_ops->quirkproc) |
823 | port_ops->quirkproc(drive); | |
f01393e4 | 824 | } |
0380dad4 | 825 | |
1da177e4 LT |
826 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
827 | ide_drive_t *drive = &hwif->drives[unit]; | |
828 | ||
829 | if (drive->present) { | |
207daeaa | 830 | ide_set_max_pio(drive); |
1da177e4 | 831 | |
1da177e4 LT |
832 | drive->nice1 = 1; |
833 | ||
5e37bdc0 | 834 | if (hwif->dma_ops) |
8c0697cc | 835 | ide_set_dma(drive); |
1da177e4 LT |
836 | } |
837 | } | |
208a08f7 KG |
838 | |
839 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
840 | ide_drive_t *drive = &hwif->drives[unit]; | |
841 | ||
807b90d0 | 842 | if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) |
208a08f7 KG |
843 | drive->no_io_32bit = 1; |
844 | else | |
845 | drive->no_io_32bit = drive->id->dword_io ? 1 : 0; | |
846 | } | |
1da177e4 LT |
847 | } |
848 | ||
1da177e4 LT |
849 | #if MAX_HWIFS > 1 |
850 | /* | |
851 | * save_match() is used to simplify logic in init_irq() below. | |
852 | * | |
853 | * A loophole here is that we may not know about a particular | |
854 | * hwif's irq until after that hwif is actually probed/initialized.. | |
855 | * This could be a problem for the case where an hwif is on a | |
856 | * dual interface that requires serialization (eg. cmd640) and another | |
857 | * hwif using one of the same irqs is initialized beforehand. | |
858 | * | |
859 | * This routine detects and reports such situations, but does not fix them. | |
860 | */ | |
861 | static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match) | |
862 | { | |
863 | ide_hwif_t *m = *match; | |
864 | ||
865 | if (m && m->hwgroup && m->hwgroup != new->hwgroup) { | |
866 | if (!new->hwgroup) | |
867 | return; | |
868 | printk("%s: potential irq problem with %s and %s\n", | |
869 | hwif->name, new->name, m->name); | |
870 | } | |
871 | if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */ | |
872 | *match = new; | |
873 | } | |
874 | #endif /* MAX_HWIFS > 1 */ | |
875 | ||
876 | /* | |
877 | * init request queue | |
878 | */ | |
879 | static int ide_init_queue(ide_drive_t *drive) | |
880 | { | |
165125e1 | 881 | struct request_queue *q; |
1da177e4 LT |
882 | ide_hwif_t *hwif = HWIF(drive); |
883 | int max_sectors = 256; | |
884 | int max_sg_entries = PRD_ENTRIES; | |
885 | ||
886 | /* | |
887 | * Our default set up assumes the normal IDE case, | |
888 | * that is 64K segmenting, standard PRD setup | |
889 | * and LBA28. Some drivers then impose their own | |
890 | * limits and LBA48 we could raise it but as yet | |
891 | * do not. | |
892 | */ | |
1946089a | 893 | |
556e58fe | 894 | q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif)); |
1da177e4 LT |
895 | if (!q) |
896 | return 1; | |
897 | ||
898 | q->queuedata = drive; | |
899 | blk_queue_segment_boundary(q, 0xffff); | |
900 | ||
1da177e4 LT |
901 | if (hwif->rqsize < max_sectors) |
902 | max_sectors = hwif->rqsize; | |
903 | blk_queue_max_sectors(q, max_sectors); | |
904 | ||
905 | #ifdef CONFIG_PCI | |
906 | /* When we have an IOMMU, we may have a problem where pci_map_sg() | |
907 | * creates segments that don't completely match our boundary | |
908 | * requirements and thus need to be broken up again. Because it | |
909 | * doesn't align properly either, we may actually have to break up | |
910 | * to more segments than what was we got in the first place, a max | |
911 | * worst case is twice as many. | |
912 | * This will be fixed once we teach pci_map_sg() about our boundary | |
913 | * requirements, hopefully soon. *FIXME* | |
914 | */ | |
915 | if (!PCI_DMA_BUS_IS_PHYS) | |
916 | max_sg_entries >>= 1; | |
917 | #endif /* CONFIG_PCI */ | |
918 | ||
919 | blk_queue_max_hw_segments(q, max_sg_entries); | |
920 | blk_queue_max_phys_segments(q, max_sg_entries); | |
921 | ||
922 | /* assign drive queue */ | |
923 | drive->queue = q; | |
924 | ||
925 | /* needs drive->queue to be set */ | |
926 | ide_toggle_bounce(drive, 1); | |
927 | ||
1da177e4 LT |
928 | return 0; |
929 | } | |
930 | ||
0947e0dc BZ |
931 | static void ide_add_drive_to_hwgroup(ide_drive_t *drive) |
932 | { | |
933 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
934 | ||
935 | spin_lock_irq(&ide_lock); | |
936 | if (!hwgroup->drive) { | |
937 | /* first drive for hwgroup. */ | |
938 | drive->next = drive; | |
939 | hwgroup->drive = drive; | |
940 | hwgroup->hwif = HWIF(hwgroup->drive); | |
941 | } else { | |
942 | drive->next = hwgroup->drive->next; | |
943 | hwgroup->drive->next = drive; | |
944 | } | |
945 | spin_unlock_irq(&ide_lock); | |
946 | } | |
947 | ||
d5bc6592 BZ |
948 | /* |
949 | * For any present drive: | |
950 | * - allocate the block device queue | |
951 | * - link drive into the hwgroup | |
952 | */ | |
953 | static void ide_port_setup_devices(ide_hwif_t *hwif) | |
954 | { | |
955 | int i; | |
956 | ||
26042d05 | 957 | mutex_lock(&ide_cfg_mtx); |
d5bc6592 BZ |
958 | for (i = 0; i < MAX_DRIVES; i++) { |
959 | ide_drive_t *drive = &hwif->drives[i]; | |
960 | ||
961 | if (!drive->present) | |
962 | continue; | |
963 | ||
964 | if (ide_init_queue(drive)) { | |
965 | printk(KERN_ERR "ide: failed to init %s\n", | |
966 | drive->name); | |
967 | continue; | |
968 | } | |
969 | ||
970 | ide_add_drive_to_hwgroup(drive); | |
971 | } | |
26042d05 | 972 | mutex_unlock(&ide_cfg_mtx); |
d5bc6592 BZ |
973 | } |
974 | ||
1da177e4 LT |
975 | /* |
976 | * This routine sets up the irq for an ide interface, and creates a new | |
977 | * hwgroup for the irq/hwif if none was previously assigned. | |
978 | * | |
979 | * Much of the code is for correctly detecting/handling irq sharing | |
980 | * and irq serialization situations. This is somewhat complex because | |
981 | * it handles static as well as dynamic (PCMCIA) IDE interfaces. | |
1da177e4 LT |
982 | */ |
983 | static int init_irq (ide_hwif_t *hwif) | |
984 | { | |
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 LT |
1067 | |
1068 | if (hwif->io_ports[IDE_CONTROL_OFFSET]) | |
1069 | /* clear nIEN */ | |
1070 | hwif->OUTB(0x08, hwif->io_ports[IDE_CONTROL_OFFSET]); | |
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 LT |
1085 | printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name, |
1086 | hwif->io_ports[IDE_DATA_OFFSET], | |
1087 | hwif->io_ports[IDE_DATA_OFFSET]+7, | |
1088 | hwif->io_ports[IDE_CONTROL_OFFSET], hwif->irq); | |
1da177e4 LT |
1089 | #else |
1090 | printk("%s at 0x%08lx on irq %d", hwif->name, | |
1091 | hwif->io_ports[IDE_DATA_OFFSET], hwif->irq); | |
7b892806 | 1092 | #endif /* __mc68000__ */ |
1da177e4 LT |
1093 | if (match) |
1094 | printk(" (%sed with %s)", | |
1095 | hwif->sharing_irq ? "shar" : "serializ", match->name); | |
1096 | printk("\n"); | |
d5bc6592 | 1097 | |
ef29888e | 1098 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1099 | return 0; |
1100 | out_unlink: | |
fbd13088 | 1101 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 1102 | out_up: |
ef29888e | 1103 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1104 | return 1; |
1105 | } | |
1106 | ||
1107 | static int ata_lock(dev_t dev, void *data) | |
1108 | { | |
1109 | /* FIXME: we want to pin hwif down */ | |
1110 | return 0; | |
1111 | } | |
1112 | ||
1113 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) | |
1114 | { | |
1115 | ide_hwif_t *hwif = data; | |
1116 | int unit = *part >> PARTN_BITS; | |
1117 | ide_drive_t *drive = &hwif->drives[unit]; | |
1118 | if (!drive->present) | |
1119 | return NULL; | |
1120 | ||
1121 | if (drive->media == ide_disk) | |
1122 | request_module("ide-disk"); | |
1123 | if (drive->scsi) | |
1124 | request_module("ide-scsi"); | |
1125 | if (drive->media == ide_cdrom || drive->media == ide_optical) | |
1126 | request_module("ide-cd"); | |
1127 | if (drive->media == ide_tape) | |
1128 | request_module("ide-tape"); | |
1129 | if (drive->media == ide_floppy) | |
1130 | request_module("ide-floppy"); | |
1131 | ||
1132 | return NULL; | |
1133 | } | |
1134 | ||
1135 | static struct kobject *exact_match(dev_t dev, int *part, void *data) | |
1136 | { | |
1137 | struct gendisk *p = data; | |
1138 | *part &= (1 << PARTN_BITS) - 1; | |
edfaa7c3 | 1139 | return &p->dev.kobj; |
1da177e4 LT |
1140 | } |
1141 | ||
1142 | static int exact_lock(dev_t dev, void *data) | |
1143 | { | |
1144 | struct gendisk *p = data; | |
1145 | ||
1146 | if (!get_disk(p)) | |
1147 | return -1; | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | void ide_register_region(struct gendisk *disk) | |
1152 | { | |
1153 | blk_register_region(MKDEV(disk->major, disk->first_minor), | |
1154 | disk->minors, NULL, exact_match, exact_lock, disk); | |
1155 | } | |
1156 | ||
1157 | EXPORT_SYMBOL_GPL(ide_register_region); | |
1158 | ||
1159 | void ide_unregister_region(struct gendisk *disk) | |
1160 | { | |
1161 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), | |
1162 | disk->minors); | |
1163 | } | |
1164 | ||
1165 | EXPORT_SYMBOL_GPL(ide_unregister_region); | |
1166 | ||
1167 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) | |
1168 | { | |
1169 | ide_hwif_t *hwif = drive->hwif; | |
1170 | unsigned int unit = (drive->select.all >> 4) & 1; | |
1171 | ||
1172 | disk->major = hwif->major; | |
1173 | disk->first_minor = unit << PARTN_BITS; | |
1174 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); | |
1175 | disk->queue = drive->queue; | |
1176 | } | |
1177 | ||
1178 | EXPORT_SYMBOL_GPL(ide_init_disk); | |
1179 | ||
8604affd BZ |
1180 | static void ide_remove_drive_from_hwgroup(ide_drive_t *drive) |
1181 | { | |
1182 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
1183 | ||
1184 | if (drive == drive->next) { | |
1185 | /* special case: last drive from hwgroup. */ | |
1186 | BUG_ON(hwgroup->drive != drive); | |
1187 | hwgroup->drive = NULL; | |
1188 | } else { | |
1189 | ide_drive_t *walk; | |
1190 | ||
1191 | walk = hwgroup->drive; | |
1192 | while (walk->next != drive) | |
1193 | walk = walk->next; | |
1194 | walk->next = drive->next; | |
1195 | if (hwgroup->drive == drive) { | |
1196 | hwgroup->drive = drive->next; | |
1197 | hwgroup->hwif = hwgroup->drive->hwif; | |
1198 | } | |
1199 | } | |
1200 | BUG_ON(hwgroup->drive == drive); | |
1201 | } | |
1202 | ||
1da177e4 LT |
1203 | static void drive_release_dev (struct device *dev) |
1204 | { | |
1205 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); | |
1206 | ||
5b0c4b30 BZ |
1207 | ide_proc_unregister_device(drive); |
1208 | ||
8604affd | 1209 | spin_lock_irq(&ide_lock); |
8604affd | 1210 | ide_remove_drive_from_hwgroup(drive); |
6044ec88 JJ |
1211 | kfree(drive->id); |
1212 | drive->id = NULL; | |
8604affd BZ |
1213 | drive->present = 0; |
1214 | /* Messed up locking ... */ | |
1215 | spin_unlock_irq(&ide_lock); | |
1216 | blk_cleanup_queue(drive->queue); | |
1217 | spin_lock_irq(&ide_lock); | |
1218 | drive->queue = NULL; | |
1219 | spin_unlock_irq(&ide_lock); | |
1220 | ||
f36d4024 | 1221 | complete(&drive->gendev_rel_comp); |
1da177e4 LT |
1222 | } |
1223 | ||
0e33555f BZ |
1224 | #ifndef ide_default_irq |
1225 | #define ide_default_irq(irq) 0 | |
1226 | #endif | |
1227 | ||
1da177e4 LT |
1228 | static int hwif_init(ide_hwif_t *hwif) |
1229 | { | |
1230 | int old_irq; | |
1231 | ||
1da177e4 LT |
1232 | if (!hwif->irq) { |
1233 | if (!(hwif->irq = ide_default_irq(hwif->io_ports[IDE_DATA_OFFSET]))) | |
1234 | { | |
1235 | printk("%s: DISABLED, NO IRQ\n", hwif->name); | |
48535651 | 1236 | return 0; |
1da177e4 LT |
1237 | } |
1238 | } | |
1da177e4 | 1239 | |
1da177e4 LT |
1240 | if (register_blkdev(hwif->major, hwif->name)) |
1241 | return 0; | |
1242 | ||
1243 | if (!hwif->sg_max_nents) | |
1244 | hwif->sg_max_nents = PRD_ENTRIES; | |
1245 | ||
45711f1a | 1246 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
1da177e4 LT |
1247 | GFP_KERNEL); |
1248 | if (!hwif->sg_table) { | |
1249 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); | |
1250 | goto out; | |
1251 | } | |
45711f1a JA |
1252 | |
1253 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); | |
1da177e4 LT |
1254 | |
1255 | if (init_irq(hwif) == 0) | |
1256 | goto done; | |
1257 | ||
1258 | old_irq = hwif->irq; | |
1259 | /* | |
1260 | * It failed to initialise. Find the default IRQ for | |
1261 | * this port and try that. | |
1262 | */ | |
1263 | if (!(hwif->irq = ide_default_irq(hwif->io_ports[IDE_DATA_OFFSET]))) { | |
1264 | printk("%s: Disabled unable to get IRQ %d.\n", | |
1265 | hwif->name, old_irq); | |
1266 | goto out; | |
1267 | } | |
1268 | if (init_irq(hwif)) { | |
1269 | printk("%s: probed IRQ %d and default IRQ %d failed.\n", | |
1270 | hwif->name, old_irq, hwif->irq); | |
1271 | goto out; | |
1272 | } | |
1273 | printk("%s: probed IRQ %d failed, using default.\n", | |
1274 | hwif->name, hwif->irq); | |
1275 | ||
1276 | done: | |
3a4e7c96 BZ |
1277 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
1278 | THIS_MODULE, ata_probe, ata_lock, hwif); | |
1da177e4 LT |
1279 | return 1; |
1280 | ||
1281 | out: | |
1282 | unregister_blkdev(hwif->major, hwif->name); | |
1283 | return 0; | |
1284 | } | |
1285 | ||
9601a607 BZ |
1286 | static void hwif_register_devices(ide_hwif_t *hwif) |
1287 | { | |
1288 | unsigned int i; | |
1289 | ||
1290 | for (i = 0; i < MAX_DRIVES; i++) { | |
1291 | ide_drive_t *drive = &hwif->drives[i]; | |
c5d70cc7 BZ |
1292 | struct device *dev = &drive->gendev; |
1293 | int ret; | |
9601a607 | 1294 | |
c5d70cc7 BZ |
1295 | if (!drive->present) |
1296 | continue; | |
9601a607 | 1297 | |
c5d70cc7 BZ |
1298 | ide_add_generic_settings(drive); |
1299 | ||
1300 | snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i); | |
1301 | dev->parent = &hwif->gendev; | |
1302 | dev->bus = &ide_bus_type; | |
1303 | dev->driver_data = drive; | |
1304 | dev->release = drive_release_dev; | |
1305 | ||
1306 | ret = device_register(dev); | |
1307 | if (ret < 0) | |
1308 | printk(KERN_WARNING "IDE: %s: device_register error: " | |
1309 | "%d\n", __func__, ret); | |
9601a607 BZ |
1310 | } |
1311 | } | |
1312 | ||
7704ca2a BZ |
1313 | static void ide_port_init_devices(ide_hwif_t *hwif) |
1314 | { | |
ac95beed | 1315 | const struct ide_port_ops *port_ops = hwif->port_ops; |
7704ca2a BZ |
1316 | int i; |
1317 | ||
1318 | for (i = 0; i < MAX_DRIVES; i++) { | |
1319 | ide_drive_t *drive = &hwif->drives[i]; | |
1320 | ||
1321 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) | |
1322 | drive->io_32bit = 1; | |
1323 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) | |
1324 | drive->unmask = 1; | |
807b90d0 BZ |
1325 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
1326 | drive->no_unmask = 1; | |
7704ca2a | 1327 | } |
1f2cf8b0 | 1328 | |
ac95beed BZ |
1329 | if (port_ops && port_ops->port_init_devs) |
1330 | port_ops->port_init_devs(hwif); | |
7704ca2a BZ |
1331 | } |
1332 | ||
c413b9b9 BZ |
1333 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
1334 | const struct ide_port_info *d) | |
8447d9d5 | 1335 | { |
c413b9b9 BZ |
1336 | if (d->chipset != ide_etrax100) |
1337 | hwif->channel = port; | |
1338 | ||
1339 | if (d->chipset) | |
1340 | hwif->chipset = d->chipset; | |
1341 | ||
1342 | if (d->init_iops) | |
1343 | d->init_iops(hwif); | |
1344 | ||
c413b9b9 BZ |
1345 | if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || |
1346 | (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) | |
1347 | hwif->irq = port ? 15 : 14; | |
1348 | ||
1349 | hwif->host_flags = d->host_flags; | |
1350 | hwif->pio_mask = d->pio_mask; | |
1351 | ||
ac95beed BZ |
1352 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
1353 | if (hwif->chipset != ide_dtc2278 || hwif->channel == 0) | |
1354 | hwif->port_ops = d->port_ops; | |
1355 | ||
1fd18905 BZ |
1356 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
1357 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) { | |
1358 | if (hwif->mate) | |
1359 | hwif->mate->serialized = hwif->serialized = 1; | |
1360 | } | |
c413b9b9 | 1361 | |
c413b9b9 BZ |
1362 | hwif->swdma_mask = d->swdma_mask; |
1363 | hwif->mwdma_mask = d->mwdma_mask; | |
1364 | hwif->ultra_mask = d->udma_mask; | |
1365 | ||
b123f56e BZ |
1366 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
1367 | int rc; | |
1368 | ||
1369 | if (d->init_dma) | |
1370 | rc = d->init_dma(hwif, d); | |
1371 | else | |
1372 | rc = ide_hwif_setup_dma(hwif, d); | |
1373 | ||
1374 | if (rc < 0) { | |
1375 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); | |
1376 | hwif->swdma_mask = 0; | |
1377 | hwif->mwdma_mask = 0; | |
1378 | hwif->ultra_mask = 0; | |
5e37bdc0 BZ |
1379 | } else if (d->dma_ops) |
1380 | hwif->dma_ops = d->dma_ops; | |
b123f56e | 1381 | } |
c413b9b9 | 1382 | |
c413b9b9 BZ |
1383 | if (d->host_flags & IDE_HFLAG_RQSIZE_256) |
1384 | hwif->rqsize = 256; | |
1385 | ||
1386 | /* call chipset specific routine for each enabled port */ | |
1387 | if (d->init_hwif) | |
1388 | d->init_hwif(hwif); | |
c7f6f21a | 1389 | } |
bfa14b42 | 1390 | |
c7f6f21a BZ |
1391 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
1392 | { | |
ac95beed BZ |
1393 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1394 | ||
1395 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { | |
bfa14b42 | 1396 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
ac95beed | 1397 | hwif->cbl = port_ops->cable_detect(hwif); |
bfa14b42 | 1398 | } |
c413b9b9 BZ |
1399 | } |
1400 | ||
f74c9141 BZ |
1401 | static ssize_t store_delete_devices(struct device *portdev, |
1402 | struct device_attribute *attr, | |
1403 | const char *buf, size_t n) | |
1404 | { | |
1405 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1406 | ||
1407 | if (strncmp(buf, "1", n)) | |
1408 | return -EINVAL; | |
1409 | ||
1410 | ide_port_unregister_devices(hwif); | |
1411 | ||
1412 | return n; | |
1413 | }; | |
1414 | ||
1415 | static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices); | |
1416 | ||
1417 | static ssize_t store_scan(struct device *portdev, | |
1418 | struct device_attribute *attr, | |
1419 | const char *buf, size_t n) | |
1420 | { | |
1421 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1422 | ||
1423 | if (strncmp(buf, "1", n)) | |
1424 | return -EINVAL; | |
1425 | ||
1426 | ide_port_unregister_devices(hwif); | |
1427 | ide_port_scan(hwif); | |
1428 | ||
1429 | return n; | |
1430 | }; | |
1431 | ||
1432 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); | |
1433 | ||
1434 | static struct device_attribute *ide_port_attrs[] = { | |
1435 | &dev_attr_delete_devices, | |
1436 | &dev_attr_scan, | |
1437 | NULL | |
1438 | }; | |
1439 | ||
1440 | static int ide_sysfs_register_port(ide_hwif_t *hwif) | |
1441 | { | |
1442 | int i, rc; | |
1443 | ||
1444 | for (i = 0; ide_port_attrs[i]; i++) { | |
1445 | rc = device_create_file(hwif->portdev, ide_port_attrs[i]); | |
1446 | if (rc) | |
1447 | break; | |
1448 | } | |
1449 | ||
1450 | return rc; | |
1451 | } | |
1452 | ||
fe80b937 BZ |
1453 | /** |
1454 | * ide_find_port_slot - find free ide_hwifs[] slot | |
1455 | * @d: IDE port info | |
1456 | * | |
1457 | * Return the new hwif. If we are out of free slots return NULL. | |
1458 | */ | |
1459 | ||
1460 | ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d) | |
1461 | { | |
1462 | ide_hwif_t *hwif; | |
1463 | int i; | |
1464 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; | |
1465 | ||
1466 | /* | |
1467 | * Claim an unassigned slot. | |
1468 | * | |
1469 | * Give preference to claiming other slots before claiming ide0/ide1, | |
1470 | * just in case there's another interface yet-to-be-scanned | |
1471 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1472 | * | |
1473 | * Unless there is a bootable card that does not use the standard | |
1474 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1475 | */ | |
1476 | if (bootable) { | |
e277f91f BZ |
1477 | i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0; |
1478 | ||
1479 | for (; i < MAX_HWIFS; i++) { | |
fe80b937 BZ |
1480 | hwif = &ide_hwifs[i]; |
1481 | if (hwif->chipset == ide_unknown) | |
1482 | return hwif; | |
1483 | } | |
1484 | } else { | |
1485 | for (i = 2; i < MAX_HWIFS; i++) { | |
1486 | hwif = &ide_hwifs[i]; | |
1487 | if (hwif->chipset == ide_unknown) | |
1488 | return hwif; | |
1489 | } | |
1490 | for (i = 0; i < 2 && i < MAX_HWIFS; i++) { | |
1491 | hwif = &ide_hwifs[i]; | |
1492 | if (hwif->chipset == ide_unknown) | |
1493 | return hwif; | |
1494 | } | |
1495 | } | |
1496 | ||
1497 | return NULL; | |
1498 | } | |
1499 | EXPORT_SYMBOL_GPL(ide_find_port_slot); | |
1500 | ||
c413b9b9 BZ |
1501 | int ide_device_add_all(u8 *idx, const struct ide_port_info *d) |
1502 | { | |
1503 | ide_hwif_t *hwif, *mate = NULL; | |
8447d9d5 BZ |
1504 | int i, rc = 0; |
1505 | ||
c413b9b9 | 1506 | for (i = 0; i < MAX_HWIFS; i++) { |
9fd91d95 | 1507 | if (idx[i] == 0xff) { |
c413b9b9 BZ |
1508 | mate = NULL; |
1509 | continue; | |
1510 | } | |
1511 | ||
1512 | hwif = &ide_hwifs[idx[i]]; | |
1513 | ||
9fd91d95 BZ |
1514 | ide_port_apply_params(hwif); |
1515 | ||
1516 | if (d == NULL) { | |
1517 | mate = NULL; | |
1518 | continue; | |
1519 | } | |
1520 | ||
c413b9b9 BZ |
1521 | if (d->chipset != ide_etrax100 && (i & 1) && mate) { |
1522 | hwif->mate = mate; | |
1523 | mate->mate = hwif; | |
1524 | } | |
1525 | ||
1526 | mate = (i & 1) ? NULL : hwif; | |
1527 | ||
1528 | ide_init_port(hwif, i & 1, d); | |
c7f6f21a | 1529 | ide_port_cable_detect(hwif); |
7704ca2a | 1530 | ide_port_init_devices(hwif); |
c413b9b9 BZ |
1531 | } |
1532 | ||
151575e4 | 1533 | for (i = 0; i < MAX_HWIFS; i++) { |
ba6560aa BZ |
1534 | if (idx[i] == 0xff) |
1535 | continue; | |
1536 | ||
139ddfca BZ |
1537 | hwif = &ide_hwifs[idx[i]]; |
1538 | ||
eb716beb BZ |
1539 | if (ide_probe_port(hwif) == 0) |
1540 | hwif->present = 1; | |
a14dc574 BZ |
1541 | |
1542 | if (hwif->chipset != ide_4drives || !hwif->mate || | |
1543 | !hwif->mate->present) | |
1544 | ide_register_port(hwif); | |
1545 | ||
eb716beb BZ |
1546 | if (hwif->present) |
1547 | ide_port_tune_devices(hwif); | |
2e13093a | 1548 | } |
ba6560aa | 1549 | |
151575e4 | 1550 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1551 | if (idx[i] == 0xff) |
1552 | continue; | |
1553 | ||
1554 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa BZ |
1555 | |
1556 | if (hwif_init(hwif) == 0) { | |
1557 | printk(KERN_INFO "%s: failed to initialize IDE " | |
1558 | "interface\n", hwif->name); | |
48535651 | 1559 | hwif->present = 0; |
ba6560aa BZ |
1560 | rc = -1; |
1561 | continue; | |
1562 | } | |
decdc3f0 | 1563 | |
eb716beb BZ |
1564 | if (hwif->present) |
1565 | ide_port_setup_devices(hwif); | |
26042d05 | 1566 | |
decdc3f0 | 1567 | ide_acpi_init(hwif); |
eb716beb BZ |
1568 | |
1569 | if (hwif->present) | |
1570 | ide_acpi_port_init_devices(hwif); | |
2e13093a BZ |
1571 | } |
1572 | ||
151575e4 | 1573 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1574 | if (idx[i] == 0xff) |
1575 | continue; | |
1576 | ||
1577 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa | 1578 | |
eb716beb BZ |
1579 | if (hwif->chipset == ide_unknown) |
1580 | hwif->chipset = ide_generic; | |
1581 | ||
1582 | if (hwif->present) | |
ba6560aa | 1583 | hwif_register_devices(hwif); |
8447d9d5 BZ |
1584 | } |
1585 | ||
151575e4 | 1586 | for (i = 0; i < MAX_HWIFS; i++) { |
327617e1 BZ |
1587 | if (idx[i] == 0xff) |
1588 | continue; | |
1589 | ||
1590 | hwif = &ide_hwifs[idx[i]]; | |
1591 | ||
eb716beb BZ |
1592 | ide_sysfs_register_port(hwif); |
1593 | ide_proc_register_port(hwif); | |
1594 | ||
1595 | if (hwif->present) | |
d9270a3f | 1596 | ide_proc_port_register_devices(hwif); |
8447d9d5 BZ |
1597 | } |
1598 | ||
1599 | return rc; | |
1600 | } | |
151575e4 BZ |
1601 | EXPORT_SYMBOL_GPL(ide_device_add_all); |
1602 | ||
c413b9b9 | 1603 | int ide_device_add(u8 idx[4], const struct ide_port_info *d) |
151575e4 BZ |
1604 | { |
1605 | u8 idx_all[MAX_HWIFS]; | |
1606 | int i; | |
8447d9d5 | 1607 | |
151575e4 BZ |
1608 | for (i = 0; i < MAX_HWIFS; i++) |
1609 | idx_all[i] = (i < 4) ? idx[i] : 0xff; | |
1610 | ||
c413b9b9 | 1611 | return ide_device_add_all(idx_all, d); |
151575e4 | 1612 | } |
8447d9d5 | 1613 | EXPORT_SYMBOL_GPL(ide_device_add); |
2dde7861 BZ |
1614 | |
1615 | void ide_port_scan(ide_hwif_t *hwif) | |
1616 | { | |
9fd91d95 | 1617 | ide_port_apply_params(hwif); |
2dde7861 BZ |
1618 | ide_port_cable_detect(hwif); |
1619 | ide_port_init_devices(hwif); | |
1620 | ||
1621 | if (ide_probe_port(hwif) < 0) | |
1622 | return; | |
1623 | ||
1624 | hwif->present = 1; | |
1625 | ||
1626 | ide_port_tune_devices(hwif); | |
1627 | ide_acpi_port_init_devices(hwif); | |
1628 | ide_port_setup_devices(hwif); | |
1629 | hwif_register_devices(hwif); | |
1630 | ide_proc_port_register_devices(hwif); | |
1631 | } | |
1632 | EXPORT_SYMBOL_GPL(ide_port_scan); | |
3b36f66b | 1633 | |
d9b819a0 BZ |
1634 | static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no, |
1635 | const struct ide_port_info *d, | |
1636 | unsigned long config) | |
3b36f66b | 1637 | { |
d9b819a0 BZ |
1638 | ide_hwif_t *hwif; |
1639 | unsigned long base, ctl; | |
1640 | int irq; | |
3b36f66b | 1641 | |
d9b819a0 BZ |
1642 | if (port_no == 0) { |
1643 | base = 0x1f0; | |
1644 | ctl = 0x3f6; | |
1645 | irq = 14; | |
1646 | } else { | |
1647 | base = 0x170; | |
1648 | ctl = 0x376; | |
1649 | irq = 15; | |
1650 | } | |
3b36f66b | 1651 | |
d92f1a28 BZ |
1652 | if (!request_region(base, 8, d->name)) { |
1653 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
1654 | d->name, base, base + 7); | |
1655 | return; | |
1656 | } | |
1657 | ||
1658 | if (!request_region(ctl, 1, d->name)) { | |
1659 | printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", | |
1660 | d->name, ctl); | |
1661 | release_region(base, 8); | |
1662 | return; | |
1663 | } | |
1664 | ||
d9b819a0 BZ |
1665 | ide_std_init_ports(hw, base, ctl); |
1666 | hw->irq = irq; | |
3b36f66b | 1667 | |
0bfeee7d | 1668 | hwif = ide_find_port_slot(d); |
3b36f66b | 1669 | if (hwif) { |
d9b819a0 | 1670 | ide_init_port_hw(hwif, hw); |
0bfeee7d BZ |
1671 | if (config) |
1672 | hwif->config_data = config; | |
d9b819a0 | 1673 | idx[port_no] = hwif->index; |
3b36f66b | 1674 | } |
d9b819a0 | 1675 | } |
3b36f66b | 1676 | |
d9b819a0 BZ |
1677 | int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config) |
1678 | { | |
1679 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; | |
1680 | hw_regs_t hw[2]; | |
0bfeee7d | 1681 | |
d9b819a0 BZ |
1682 | memset(&hw, 0, sizeof(hw)); |
1683 | ||
1684 | if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0) | |
1685 | ide_legacy_init_one(idx, &hw[0], 0, d, config); | |
1686 | ide_legacy_init_one(idx, &hw[1], 1, d, config); | |
1687 | ||
1688 | if (idx[0] == 0xff && idx[1] == 0xff && | |
1689 | (d->host_flags & IDE_HFLAG_SINGLE)) | |
1690 | return -ENOENT; | |
3b36f66b BZ |
1691 | |
1692 | ide_device_add(idx, d); | |
1693 | ||
1694 | return 0; | |
1695 | } | |
1696 | EXPORT_SYMBOL_GPL(ide_legacy_device_add); |