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 */ | |
9567b349 | 127 | hwif->input_data(drive, NULL, id, SECTOR_SIZE); |
1da177e4 LT |
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); | |
4c3032d8 | 267 | struct ide_io_ports *io_ports = &hwif->io_ports; |
c47137a9 | 268 | int use_altstatus = 0, rc; |
1da177e4 LT |
269 | unsigned long timeout; |
270 | u8 s = 0, a = 0; | |
271 | ||
272 | /* take a deep breath */ | |
273 | msleep(50); | |
274 | ||
4c3032d8 | 275 | if (io_ports->ctl_addr) { |
c47137a9 BZ |
276 | a = ide_read_altstatus(drive); |
277 | s = ide_read_status(drive); | |
278 | if ((a ^ s) & ~INDEX_STAT) | |
1da177e4 | 279 | /* ancient Seagate drives, broken interfaces */ |
c47137a9 BZ |
280 | printk(KERN_INFO "%s: probing with STATUS(0x%02x) " |
281 | "instead of ALTSTATUS(0x%02x)\n", | |
282 | drive->name, s, a); | |
283 | else | |
1da177e4 | 284 | /* use non-intrusive polling */ |
c47137a9 BZ |
285 | use_altstatus = 1; |
286 | } | |
1da177e4 LT |
287 | |
288 | /* set features register for atapi | |
289 | * identify command to be sure of reply | |
290 | */ | |
291 | if ((cmd == WIN_PIDENTIFY)) | |
292 | /* disable dma & overlap */ | |
4c3032d8 | 293 | hwif->OUTB(0, io_ports->feature_addr); |
1da177e4 LT |
294 | |
295 | /* ask drive for ID */ | |
32b3fe4f | 296 | hwif->OUTBSYNC(drive, cmd, io_ports->command_addr); |
1da177e4 LT |
297 | |
298 | timeout = ((cmd == WIN_IDENTIFY) ? WAIT_WORSTCASE : WAIT_PIDENTIFY) / 2; | |
299 | timeout += jiffies; | |
300 | do { | |
301 | if (time_after(jiffies, timeout)) { | |
302 | /* drive timed-out */ | |
303 | return 1; | |
304 | } | |
305 | /* give drive a breather */ | |
306 | msleep(50); | |
c47137a9 BZ |
307 | s = use_altstatus ? ide_read_altstatus(drive) |
308 | : ide_read_status(drive); | |
309 | } while (s & BUSY_STAT); | |
1da177e4 LT |
310 | |
311 | /* wait for IRQ and DRQ_STAT */ | |
312 | msleep(50); | |
c47137a9 BZ |
313 | s = ide_read_status(drive); |
314 | ||
315 | if (OK_STAT(s, DRQ_STAT, BAD_R_STAT)) { | |
1da177e4 LT |
316 | unsigned long flags; |
317 | ||
318 | /* local CPU only; some systems need this */ | |
319 | local_irq_save(flags); | |
320 | /* drive returned ID */ | |
321 | do_identify(drive, cmd); | |
322 | /* drive responded with ID */ | |
323 | rc = 0; | |
324 | /* clear drive IRQ */ | |
c47137a9 | 325 | (void)ide_read_status(drive); |
1da177e4 LT |
326 | local_irq_restore(flags); |
327 | } else { | |
328 | /* drive refused ID */ | |
329 | rc = 2; | |
330 | } | |
331 | return rc; | |
332 | } | |
333 | ||
334 | /** | |
335 | * try_to_identify - try to identify a drive | |
336 | * @drive: drive to probe | |
337 | * @cmd: command to use | |
338 | * | |
339 | * Issue the identify command and then do IRQ probing to | |
340 | * complete the identification when needed by finding the | |
341 | * IRQ the drive is attached to | |
342 | */ | |
343 | ||
344 | static int try_to_identify (ide_drive_t *drive, u8 cmd) | |
345 | { | |
346 | ide_hwif_t *hwif = HWIF(drive); | |
347 | int retval; | |
348 | int autoprobe = 0; | |
349 | unsigned long cookie = 0; | |
350 | ||
351 | /* | |
352 | * Disable device irq unless we need to | |
353 | * probe for it. Otherwise we'll get spurious | |
354 | * interrupts during the identify-phase that | |
355 | * the irq handler isn't expecting. | |
356 | */ | |
4c3032d8 | 357 | if (hwif->io_ports.ctl_addr) { |
1da177e4 LT |
358 | if (!hwif->irq) { |
359 | autoprobe = 1; | |
360 | cookie = probe_irq_on(); | |
1da177e4 | 361 | } |
81ca6919 | 362 | ide_set_irq(drive, autoprobe); |
1da177e4 LT |
363 | } |
364 | ||
365 | retval = actual_try_to_identify(drive, cmd); | |
366 | ||
367 | if (autoprobe) { | |
368 | int irq; | |
81ca6919 BZ |
369 | |
370 | ide_set_irq(drive, 0); | |
1da177e4 | 371 | /* clear drive IRQ */ |
c47137a9 | 372 | (void)ide_read_status(drive); |
1da177e4 LT |
373 | udelay(5); |
374 | irq = probe_irq_off(cookie); | |
375 | if (!hwif->irq) { | |
376 | if (irq > 0) { | |
377 | hwif->irq = irq; | |
378 | } else { | |
379 | /* Mmmm.. multiple IRQs.. | |
380 | * don't know which was ours | |
381 | */ | |
382 | printk("%s: IRQ probe failed (0x%lx)\n", | |
383 | drive->name, cookie); | |
384 | } | |
385 | } | |
386 | } | |
387 | return retval; | |
388 | } | |
389 | ||
3a5015cc BZ |
390 | static int ide_busy_sleep(ide_hwif_t *hwif) |
391 | { | |
392 | unsigned long timeout = jiffies + WAIT_WORSTCASE; | |
393 | u8 stat; | |
394 | ||
395 | do { | |
396 | msleep(50); | |
4c3032d8 | 397 | stat = hwif->INB(hwif->io_ports.status_addr); |
3a5015cc BZ |
398 | if ((stat & BUSY_STAT) == 0) |
399 | return 0; | |
400 | } while (time_before(jiffies, timeout)); | |
401 | ||
402 | return 1; | |
403 | } | |
1da177e4 LT |
404 | |
405 | /** | |
406 | * do_probe - probe an IDE device | |
407 | * @drive: drive to probe | |
408 | * @cmd: command to use | |
409 | * | |
410 | * do_probe() has the difficult job of finding a drive if it exists, | |
411 | * without getting hung up if it doesn't exist, without trampling on | |
412 | * ethernet cards, and without leaving any IRQs dangling to haunt us later. | |
413 | * | |
414 | * If a drive is "known" to exist (from CMOS or kernel parameters), | |
415 | * but does not respond right away, the probe will "hang in there" | |
416 | * for the maximum wait time (about 30 seconds), otherwise it will | |
417 | * exit much more quickly. | |
418 | * | |
419 | * Returns: 0 device was identified | |
420 | * 1 device timed-out (no response to identify request) | |
421 | * 2 device aborted the command (refused to identify itself) | |
422 | * 3 bad status from device (possible for ATAPI drives) | |
423 | * 4 probe was not attempted because failure was obvious | |
424 | */ | |
425 | ||
426 | static int do_probe (ide_drive_t *drive, u8 cmd) | |
427 | { | |
1da177e4 | 428 | ide_hwif_t *hwif = HWIF(drive); |
4c3032d8 | 429 | struct ide_io_ports *io_ports = &hwif->io_ports; |
57b55275 BZ |
430 | int rc; |
431 | u8 stat; | |
1da177e4 LT |
432 | |
433 | if (drive->present) { | |
434 | /* avoid waiting for inappropriate probes */ | |
435 | if ((drive->media != ide_disk) && (cmd == WIN_IDENTIFY)) | |
436 | return 4; | |
437 | } | |
438 | #ifdef DEBUG | |
439 | printk("probing for %s: present=%d, media=%d, probetype=%s\n", | |
440 | drive->name, drive->present, drive->media, | |
441 | (cmd == WIN_IDENTIFY) ? "ATA" : "ATAPI"); | |
442 | #endif | |
443 | ||
444 | /* needed for some systems | |
445 | * (e.g. crw9624 as drive0 with disk as slave) | |
446 | */ | |
447 | msleep(50); | |
448 | SELECT_DRIVE(drive); | |
449 | msleep(50); | |
4c3032d8 | 450 | if (hwif->INB(io_ports->device_addr) != drive->select.all && |
23579a2a | 451 | !drive->present) { |
1da177e4 LT |
452 | if (drive->select.b.unit != 0) { |
453 | /* exit with drive0 selected */ | |
454 | SELECT_DRIVE(&hwif->drives[0]); | |
455 | /* allow BUSY_STAT to assert & clear */ | |
456 | msleep(50); | |
457 | } | |
458 | /* no i/f present: mmm.. this should be a 4 -ml */ | |
459 | return 3; | |
460 | } | |
461 | ||
c47137a9 BZ |
462 | stat = ide_read_status(drive); |
463 | ||
464 | if (OK_STAT(stat, READY_STAT, BUSY_STAT) || | |
1da177e4 LT |
465 | drive->present || cmd == WIN_PIDENTIFY) { |
466 | /* send cmd and wait */ | |
467 | if ((rc = try_to_identify(drive, cmd))) { | |
468 | /* failed: try again */ | |
469 | rc = try_to_identify(drive,cmd); | |
470 | } | |
57b55275 | 471 | |
c47137a9 | 472 | stat = ide_read_status(drive); |
57b55275 BZ |
473 | |
474 | if (stat == (BUSY_STAT | READY_STAT)) | |
1da177e4 LT |
475 | return 4; |
476 | ||
cc12175f | 477 | if (rc == 1 && cmd == WIN_PIDENTIFY) { |
57b55275 BZ |
478 | printk(KERN_ERR "%s: no response (status = 0x%02x), " |
479 | "resetting drive\n", drive->name, stat); | |
1da177e4 | 480 | msleep(50); |
4c3032d8 | 481 | hwif->OUTB(drive->select.all, io_ports->device_addr); |
1da177e4 | 482 | msleep(50); |
32b3fe4f | 483 | hwif->OUTBSYNC(drive, WIN_SRST, io_ports->command_addr); |
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); | |
32b3fe4f | 519 | hwif->OUTBSYNC(drive, EXABYTE_ENABLE_NEST, hwif->io_ports.command_addr); |
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 | ||
716ad875 GKH |
649 | hwif->portdev = device_create_drvdata(ide_port_class, &hwif->gendev, |
650 | MKDEV(0, 0), hwif, hwif->name); | |
f74c9141 BZ |
651 | if (IS_ERR(hwif->portdev)) { |
652 | ret = PTR_ERR(hwif->portdev); | |
653 | device_unregister(&hwif->gendev); | |
654 | } | |
f74c9141 BZ |
655 | out: |
656 | return ret; | |
1da177e4 LT |
657 | } |
658 | ||
c860a8f2 BZ |
659 | /** |
660 | * ide_port_wait_ready - wait for port to become ready | |
661 | * @hwif: IDE port | |
662 | * | |
663 | * This is needed on some PPCs and a bunch of BIOS-less embedded | |
664 | * platforms. Typical cases are: | |
665 | * | |
666 | * - The firmware hard reset the disk before booting the kernel, | |
667 | * the drive is still doing it's poweron-reset sequence, that | |
668 | * can take up to 30 seconds. | |
669 | * | |
670 | * - The firmware does nothing (or no firmware), the device is | |
671 | * still in POST state (same as above actually). | |
672 | * | |
673 | * - Some CD/DVD/Writer combo drives tend to drive the bus during | |
674 | * their reset sequence even when they are non-selected slave | |
675 | * devices, thus preventing discovery of the main HD. | |
676 | * | |
677 | * Doing this wait-for-non-busy should not harm any existing | |
678 | * configuration and fix some issues like the above. | |
679 | * | |
680 | * BenH. | |
681 | * | |
682 | * Returns 0 on success, error code (< 0) otherwise. | |
683 | */ | |
684 | ||
685 | static int ide_port_wait_ready(ide_hwif_t *hwif) | |
1da177e4 | 686 | { |
8266105b | 687 | int unit, rc; |
1da177e4 LT |
688 | |
689 | printk(KERN_DEBUG "Probing IDE interface %s...\n", hwif->name); | |
690 | ||
691 | /* Let HW settle down a bit from whatever init state we | |
692 | * come from */ | |
693 | mdelay(2); | |
694 | ||
695 | /* Wait for BSY bit to go away, spec timeout is 30 seconds, | |
696 | * I know of at least one disk who takes 31 seconds, I use 35 | |
697 | * here to be safe | |
698 | */ | |
699 | rc = ide_wait_not_busy(hwif, 35000); | |
700 | if (rc) | |
701 | return rc; | |
702 | ||
703 | /* Now make sure both master & slave are ready */ | |
8266105b JS |
704 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
705 | ide_drive_t *drive = &hwif->drives[unit]; | |
706 | ||
707 | /* Ignore disks that we will not probe for later. */ | |
708 | if (!drive->noprobe || drive->present) { | |
709 | SELECT_DRIVE(drive); | |
81ca6919 | 710 | ide_set_irq(drive, 1); |
8266105b JS |
711 | mdelay(2); |
712 | rc = ide_wait_not_busy(hwif, 35000); | |
713 | if (rc) | |
714 | goto out; | |
715 | } else | |
716 | printk(KERN_DEBUG "%s: ide_wait_not_busy() skipped\n", | |
717 | drive->name); | |
718 | } | |
719 | out: | |
1da177e4 | 720 | /* Exit function with master reselected (let's be sane) */ |
8266105b JS |
721 | if (unit) |
722 | SELECT_DRIVE(&hwif->drives[0]); | |
723 | ||
1da177e4 LT |
724 | return rc; |
725 | } | |
726 | ||
727 | /** | |
728 | * ide_undecoded_slave - look for bad CF adapters | |
f01393e4 | 729 | * @drive1: drive |
1da177e4 LT |
730 | * |
731 | * Analyse the drives on the interface and attempt to decide if we | |
732 | * have the same drive viewed twice. This occurs with crap CF adapters | |
733 | * and PCMCIA sometimes. | |
734 | */ | |
735 | ||
f01393e4 | 736 | void ide_undecoded_slave(ide_drive_t *drive1) |
1da177e4 | 737 | { |
f01393e4 | 738 | ide_drive_t *drive0 = &drive1->hwif->drives[0]; |
1da177e4 | 739 | |
f01393e4 | 740 | if ((drive1->dn & 1) == 0 || drive0->present == 0) |
1da177e4 LT |
741 | return; |
742 | ||
743 | /* If the models don't match they are not the same product */ | |
744 | if (strcmp(drive0->id->model, drive1->id->model)) | |
745 | return; | |
746 | ||
747 | /* Serial numbers do not match */ | |
748 | if (strncmp(drive0->id->serial_no, drive1->id->serial_no, 20)) | |
749 | return; | |
750 | ||
751 | /* No serial number, thankfully very rare for CF */ | |
752 | if (drive0->id->serial_no[0] == 0) | |
753 | return; | |
754 | ||
755 | /* Appears to be an IDE flash adapter with decode bugs */ | |
756 | printk(KERN_WARNING "ide-probe: ignoring undecoded slave\n"); | |
757 | ||
758 | drive1->present = 0; | |
759 | } | |
760 | ||
761 | EXPORT_SYMBOL_GPL(ide_undecoded_slave); | |
762 | ||
9d501529 | 763 | static int ide_probe_port(ide_hwif_t *hwif) |
1da177e4 | 764 | { |
1da177e4 LT |
765 | unsigned long flags; |
766 | unsigned int irqd; | |
a14dc574 BZ |
767 | int unit, rc = -ENODEV; |
768 | ||
769 | BUG_ON(hwif->present); | |
1da177e4 | 770 | |
e53cd458 | 771 | if (hwif->drives[0].noprobe && hwif->drives[1].noprobe) |
9d501529 | 772 | return -EACCES; |
1da177e4 | 773 | |
1da177e4 LT |
774 | /* |
775 | * We must always disable IRQ, as probe_for_drive will assert IRQ, but | |
776 | * we'll install our IRQ driver much later... | |
777 | */ | |
778 | irqd = hwif->irq; | |
779 | if (irqd) | |
780 | disable_irq(hwif->irq); | |
781 | ||
782 | local_irq_set(flags); | |
783 | ||
c860a8f2 | 784 | if (ide_port_wait_ready(hwif) == -EBUSY) |
1da177e4 LT |
785 | printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name); |
786 | ||
787 | /* | |
f367bed0 BZ |
788 | * Second drive should only exist if first drive was found, |
789 | * but a lot of cdrom drives are configured as single slaves. | |
1da177e4 | 790 | */ |
f367bed0 | 791 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
1da177e4 LT |
792 | ide_drive_t *drive = &hwif->drives[unit]; |
793 | drive->dn = (hwif->channel ? 2 : 0) + unit; | |
794 | (void) probe_for_drive(drive); | |
a14dc574 BZ |
795 | if (drive->present) |
796 | rc = 0; | |
1da177e4 | 797 | } |
e460a597 | 798 | |
1da177e4 | 799 | local_irq_restore(flags); |
e460a597 | 800 | |
1da177e4 LT |
801 | /* |
802 | * Use cached IRQ number. It might be (and is...) changed by probe | |
803 | * code above | |
804 | */ | |
805 | if (irqd) | |
806 | enable_irq(irqd); | |
807 | ||
a14dc574 | 808 | return rc; |
e84e7ea7 BZ |
809 | } |
810 | ||
811 | static void ide_port_tune_devices(ide_hwif_t *hwif) | |
812 | { | |
ac95beed | 813 | const struct ide_port_ops *port_ops = hwif->port_ops; |
e84e7ea7 BZ |
814 | int unit; |
815 | ||
f01393e4 BZ |
816 | for (unit = 0; unit < MAX_DRIVES; unit++) { |
817 | ide_drive_t *drive = &hwif->drives[unit]; | |
818 | ||
ac95beed BZ |
819 | if (drive->present && port_ops && port_ops->quirkproc) |
820 | port_ops->quirkproc(drive); | |
f01393e4 | 821 | } |
0380dad4 | 822 | |
1da177e4 LT |
823 | for (unit = 0; unit < MAX_DRIVES; ++unit) { |
824 | ide_drive_t *drive = &hwif->drives[unit]; | |
825 | ||
826 | if (drive->present) { | |
207daeaa | 827 | ide_set_max_pio(drive); |
1da177e4 | 828 | |
1da177e4 LT |
829 | drive->nice1 = 1; |
830 | ||
5e37bdc0 | 831 | if (hwif->dma_ops) |
8c0697cc | 832 | ide_set_dma(drive); |
1da177e4 LT |
833 | } |
834 | } | |
208a08f7 KG |
835 | |
836 | for (unit = 0; unit < MAX_DRIVES; ++unit) { | |
837 | ide_drive_t *drive = &hwif->drives[unit]; | |
838 | ||
807b90d0 | 839 | if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT) |
208a08f7 KG |
840 | drive->no_io_32bit = 1; |
841 | else | |
842 | drive->no_io_32bit = drive->id->dword_io ? 1 : 0; | |
843 | } | |
1da177e4 LT |
844 | } |
845 | ||
1da177e4 LT |
846 | #if MAX_HWIFS > 1 |
847 | /* | |
848 | * save_match() is used to simplify logic in init_irq() below. | |
849 | * | |
850 | * A loophole here is that we may not know about a particular | |
851 | * hwif's irq until after that hwif is actually probed/initialized.. | |
852 | * This could be a problem for the case where an hwif is on a | |
853 | * dual interface that requires serialization (eg. cmd640) and another | |
854 | * hwif using one of the same irqs is initialized beforehand. | |
855 | * | |
856 | * This routine detects and reports such situations, but does not fix them. | |
857 | */ | |
858 | static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match) | |
859 | { | |
860 | ide_hwif_t *m = *match; | |
861 | ||
862 | if (m && m->hwgroup && m->hwgroup != new->hwgroup) { | |
863 | if (!new->hwgroup) | |
864 | return; | |
865 | printk("%s: potential irq problem with %s and %s\n", | |
866 | hwif->name, new->name, m->name); | |
867 | } | |
868 | if (!m || m->irq != hwif->irq) /* don't undo a prior perfect match */ | |
869 | *match = new; | |
870 | } | |
871 | #endif /* MAX_HWIFS > 1 */ | |
872 | ||
873 | /* | |
874 | * init request queue | |
875 | */ | |
876 | static int ide_init_queue(ide_drive_t *drive) | |
877 | { | |
165125e1 | 878 | struct request_queue *q; |
1da177e4 LT |
879 | ide_hwif_t *hwif = HWIF(drive); |
880 | int max_sectors = 256; | |
881 | int max_sg_entries = PRD_ENTRIES; | |
882 | ||
883 | /* | |
884 | * Our default set up assumes the normal IDE case, | |
885 | * that is 64K segmenting, standard PRD setup | |
886 | * and LBA28. Some drivers then impose their own | |
887 | * limits and LBA48 we could raise it but as yet | |
888 | * do not. | |
889 | */ | |
1946089a | 890 | |
556e58fe | 891 | q = blk_init_queue_node(do_ide_request, &ide_lock, hwif_to_node(hwif)); |
1da177e4 LT |
892 | if (!q) |
893 | return 1; | |
894 | ||
895 | q->queuedata = drive; | |
896 | blk_queue_segment_boundary(q, 0xffff); | |
897 | ||
1da177e4 LT |
898 | if (hwif->rqsize < max_sectors) |
899 | max_sectors = hwif->rqsize; | |
900 | blk_queue_max_sectors(q, max_sectors); | |
901 | ||
902 | #ifdef CONFIG_PCI | |
903 | /* When we have an IOMMU, we may have a problem where pci_map_sg() | |
904 | * creates segments that don't completely match our boundary | |
905 | * requirements and thus need to be broken up again. Because it | |
906 | * doesn't align properly either, we may actually have to break up | |
907 | * to more segments than what was we got in the first place, a max | |
908 | * worst case is twice as many. | |
909 | * This will be fixed once we teach pci_map_sg() about our boundary | |
910 | * requirements, hopefully soon. *FIXME* | |
911 | */ | |
912 | if (!PCI_DMA_BUS_IS_PHYS) | |
913 | max_sg_entries >>= 1; | |
914 | #endif /* CONFIG_PCI */ | |
915 | ||
916 | blk_queue_max_hw_segments(q, max_sg_entries); | |
917 | blk_queue_max_phys_segments(q, max_sg_entries); | |
918 | ||
919 | /* assign drive queue */ | |
920 | drive->queue = q; | |
921 | ||
922 | /* needs drive->queue to be set */ | |
923 | ide_toggle_bounce(drive, 1); | |
924 | ||
1da177e4 LT |
925 | return 0; |
926 | } | |
927 | ||
0947e0dc BZ |
928 | static void ide_add_drive_to_hwgroup(ide_drive_t *drive) |
929 | { | |
930 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
931 | ||
932 | spin_lock_irq(&ide_lock); | |
933 | if (!hwgroup->drive) { | |
934 | /* first drive for hwgroup. */ | |
935 | drive->next = drive; | |
936 | hwgroup->drive = drive; | |
937 | hwgroup->hwif = HWIF(hwgroup->drive); | |
938 | } else { | |
939 | drive->next = hwgroup->drive->next; | |
940 | hwgroup->drive->next = drive; | |
941 | } | |
942 | spin_unlock_irq(&ide_lock); | |
943 | } | |
944 | ||
d5bc6592 BZ |
945 | /* |
946 | * For any present drive: | |
947 | * - allocate the block device queue | |
948 | * - link drive into the hwgroup | |
949 | */ | |
950 | static void ide_port_setup_devices(ide_hwif_t *hwif) | |
951 | { | |
952 | int i; | |
953 | ||
26042d05 | 954 | mutex_lock(&ide_cfg_mtx); |
d5bc6592 BZ |
955 | for (i = 0; i < MAX_DRIVES; i++) { |
956 | ide_drive_t *drive = &hwif->drives[i]; | |
957 | ||
958 | if (!drive->present) | |
959 | continue; | |
960 | ||
961 | if (ide_init_queue(drive)) { | |
962 | printk(KERN_ERR "ide: failed to init %s\n", | |
963 | drive->name); | |
964 | continue; | |
965 | } | |
966 | ||
967 | ide_add_drive_to_hwgroup(drive); | |
968 | } | |
26042d05 | 969 | mutex_unlock(&ide_cfg_mtx); |
d5bc6592 BZ |
970 | } |
971 | ||
1da177e4 LT |
972 | /* |
973 | * This routine sets up the irq for an ide interface, and creates a new | |
974 | * hwgroup for the irq/hwif if none was previously assigned. | |
975 | * | |
976 | * Much of the code is for correctly detecting/handling irq sharing | |
977 | * and irq serialization situations. This is somewhat complex because | |
978 | * it handles static as well as dynamic (PCMCIA) IDE interfaces. | |
1da177e4 LT |
979 | */ |
980 | static int init_irq (ide_hwif_t *hwif) | |
981 | { | |
4c3032d8 | 982 | struct ide_io_ports *io_ports = &hwif->io_ports; |
1da177e4 LT |
983 | unsigned int index; |
984 | ide_hwgroup_t *hwgroup; | |
985 | ide_hwif_t *match = NULL; | |
986 | ||
987 | ||
988 | BUG_ON(in_interrupt()); | |
989 | BUG_ON(irqs_disabled()); | |
556e58fe RT |
990 | BUG_ON(hwif == NULL); |
991 | ||
ef29888e | 992 | mutex_lock(&ide_cfg_mtx); |
1da177e4 LT |
993 | hwif->hwgroup = NULL; |
994 | #if MAX_HWIFS > 1 | |
995 | /* | |
996 | * Group up with any other hwifs that share our irq(s). | |
997 | */ | |
998 | for (index = 0; index < MAX_HWIFS; index++) { | |
999 | ide_hwif_t *h = &ide_hwifs[index]; | |
1000 | if (h->hwgroup) { /* scan only initialized hwif's */ | |
1001 | if (hwif->irq == h->irq) { | |
1002 | hwif->sharing_irq = h->sharing_irq = 1; | |
1003 | if (hwif->chipset != ide_pci || | |
1004 | h->chipset != ide_pci) { | |
1005 | save_match(hwif, h, &match); | |
1006 | } | |
1007 | } | |
1008 | if (hwif->serialized) { | |
1009 | if (hwif->mate && hwif->mate->irq == h->irq) | |
1010 | save_match(hwif, h, &match); | |
1011 | } | |
1012 | if (h->serialized) { | |
1013 | if (h->mate && hwif->irq == h->mate->irq) | |
1014 | save_match(hwif, h, &match); | |
1015 | } | |
1016 | } | |
1017 | } | |
1018 | #endif /* MAX_HWIFS > 1 */ | |
1019 | /* | |
1020 | * If we are still without a hwgroup, then form a new one | |
1021 | */ | |
1022 | if (match) { | |
1023 | hwgroup = match->hwgroup; | |
1024 | hwif->hwgroup = hwgroup; | |
1025 | /* | |
1026 | * Link us into the hwgroup. | |
1027 | * This must be done early, do ensure that unexpected_intr | |
1028 | * can find the hwif and prevent irq storms. | |
1029 | * No drives are attached to the new hwif, choose_drive | |
1030 | * can't do anything stupid (yet). | |
1031 | * Add ourself as the 2nd entry to the hwgroup->hwif | |
1032 | * linked list, the first entry is the hwif that owns | |
1033 | * hwgroup->handler - do not change that. | |
1034 | */ | |
1035 | spin_lock_irq(&ide_lock); | |
1036 | hwif->next = hwgroup->hwif->next; | |
1037 | hwgroup->hwif->next = hwif; | |
cae5c820 | 1038 | BUG_ON(hwif->next == hwif); |
1da177e4 LT |
1039 | spin_unlock_irq(&ide_lock); |
1040 | } else { | |
422278ef BZ |
1041 | hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO, |
1042 | hwif_to_node(hwif)); | |
1043 | if (hwgroup == NULL) | |
1044 | goto out_up; | |
1da177e4 LT |
1045 | |
1046 | hwif->hwgroup = hwgroup; | |
422278ef | 1047 | hwgroup->hwif = hwif->next = hwif; |
1da177e4 | 1048 | |
1da177e4 LT |
1049 | init_timer(&hwgroup->timer); |
1050 | hwgroup->timer.function = &ide_timer_expiry; | |
1051 | hwgroup->timer.data = (unsigned long) hwgroup; | |
1052 | } | |
1053 | ||
1054 | /* | |
1055 | * Allocate the irq, if not already obtained for another hwif | |
1056 | */ | |
1057 | if (!match || match->irq != hwif->irq) { | |
7b5da4be | 1058 | int sa = 0; |
7b892806 | 1059 | #if defined(__mc68000__) |
362537b9 | 1060 | sa = IRQF_SHARED; |
e1771e20 | 1061 | #endif /* __mc68000__ */ |
1da177e4 | 1062 | |
7b5da4be | 1063 | if (IDE_CHIPSET_IS_PCI(hwif->chipset)) |
362537b9 | 1064 | sa = IRQF_SHARED; |
1da177e4 | 1065 | |
4c3032d8 | 1066 | if (io_ports->ctl_addr) |
1da177e4 | 1067 | /* clear nIEN */ |
4c3032d8 | 1068 | hwif->OUTB(0x08, io_ports->ctl_addr); |
1da177e4 LT |
1069 | |
1070 | if (request_irq(hwif->irq,&ide_intr,sa,hwif->name,hwgroup)) | |
1071 | goto out_unlink; | |
1072 | } | |
1073 | ||
8a0e7e14 BZ |
1074 | if (!hwif->rqsize) { |
1075 | if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) || | |
1076 | (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA)) | |
1077 | hwif->rqsize = 256; | |
1078 | else | |
1079 | hwif->rqsize = 65536; | |
1080 | } | |
1081 | ||
7b892806 | 1082 | #if !defined(__mc68000__) |
1da177e4 | 1083 | printk("%s at 0x%03lx-0x%03lx,0x%03lx on irq %d", hwif->name, |
4c3032d8 BZ |
1084 | io_ports->data_addr, io_ports->status_addr, |
1085 | io_ports->ctl_addr, hwif->irq); | |
1da177e4 LT |
1086 | #else |
1087 | printk("%s at 0x%08lx on irq %d", hwif->name, | |
4c3032d8 | 1088 | io_ports->data_addr, hwif->irq); |
7b892806 | 1089 | #endif /* __mc68000__ */ |
1da177e4 LT |
1090 | if (match) |
1091 | printk(" (%sed with %s)", | |
1092 | hwif->sharing_irq ? "shar" : "serializ", match->name); | |
1093 | printk("\n"); | |
d5bc6592 | 1094 | |
ef29888e | 1095 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1096 | return 0; |
1097 | out_unlink: | |
fbd13088 | 1098 | ide_remove_port_from_hwgroup(hwif); |
1da177e4 | 1099 | out_up: |
ef29888e | 1100 | mutex_unlock(&ide_cfg_mtx); |
1da177e4 LT |
1101 | return 1; |
1102 | } | |
1103 | ||
1104 | static int ata_lock(dev_t dev, void *data) | |
1105 | { | |
1106 | /* FIXME: we want to pin hwif down */ | |
1107 | return 0; | |
1108 | } | |
1109 | ||
1110 | static struct kobject *ata_probe(dev_t dev, int *part, void *data) | |
1111 | { | |
1112 | ide_hwif_t *hwif = data; | |
1113 | int unit = *part >> PARTN_BITS; | |
1114 | ide_drive_t *drive = &hwif->drives[unit]; | |
1115 | if (!drive->present) | |
1116 | return NULL; | |
1117 | ||
1118 | if (drive->media == ide_disk) | |
1119 | request_module("ide-disk"); | |
1120 | if (drive->scsi) | |
1121 | request_module("ide-scsi"); | |
1122 | if (drive->media == ide_cdrom || drive->media == ide_optical) | |
1123 | request_module("ide-cd"); | |
1124 | if (drive->media == ide_tape) | |
1125 | request_module("ide-tape"); | |
1126 | if (drive->media == ide_floppy) | |
1127 | request_module("ide-floppy"); | |
1128 | ||
1129 | return NULL; | |
1130 | } | |
1131 | ||
1132 | static struct kobject *exact_match(dev_t dev, int *part, void *data) | |
1133 | { | |
1134 | struct gendisk *p = data; | |
1135 | *part &= (1 << PARTN_BITS) - 1; | |
edfaa7c3 | 1136 | return &p->dev.kobj; |
1da177e4 LT |
1137 | } |
1138 | ||
1139 | static int exact_lock(dev_t dev, void *data) | |
1140 | { | |
1141 | struct gendisk *p = data; | |
1142 | ||
1143 | if (!get_disk(p)) | |
1144 | return -1; | |
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | void ide_register_region(struct gendisk *disk) | |
1149 | { | |
1150 | blk_register_region(MKDEV(disk->major, disk->first_minor), | |
1151 | disk->minors, NULL, exact_match, exact_lock, disk); | |
1152 | } | |
1153 | ||
1154 | EXPORT_SYMBOL_GPL(ide_register_region); | |
1155 | ||
1156 | void ide_unregister_region(struct gendisk *disk) | |
1157 | { | |
1158 | blk_unregister_region(MKDEV(disk->major, disk->first_minor), | |
1159 | disk->minors); | |
1160 | } | |
1161 | ||
1162 | EXPORT_SYMBOL_GPL(ide_unregister_region); | |
1163 | ||
1164 | void ide_init_disk(struct gendisk *disk, ide_drive_t *drive) | |
1165 | { | |
1166 | ide_hwif_t *hwif = drive->hwif; | |
1167 | unsigned int unit = (drive->select.all >> 4) & 1; | |
1168 | ||
1169 | disk->major = hwif->major; | |
1170 | disk->first_minor = unit << PARTN_BITS; | |
1171 | sprintf(disk->disk_name, "hd%c", 'a' + hwif->index * MAX_DRIVES + unit); | |
1172 | disk->queue = drive->queue; | |
1173 | } | |
1174 | ||
1175 | EXPORT_SYMBOL_GPL(ide_init_disk); | |
1176 | ||
8604affd BZ |
1177 | static void ide_remove_drive_from_hwgroup(ide_drive_t *drive) |
1178 | { | |
1179 | ide_hwgroup_t *hwgroup = drive->hwif->hwgroup; | |
1180 | ||
1181 | if (drive == drive->next) { | |
1182 | /* special case: last drive from hwgroup. */ | |
1183 | BUG_ON(hwgroup->drive != drive); | |
1184 | hwgroup->drive = NULL; | |
1185 | } else { | |
1186 | ide_drive_t *walk; | |
1187 | ||
1188 | walk = hwgroup->drive; | |
1189 | while (walk->next != drive) | |
1190 | walk = walk->next; | |
1191 | walk->next = drive->next; | |
1192 | if (hwgroup->drive == drive) { | |
1193 | hwgroup->drive = drive->next; | |
1194 | hwgroup->hwif = hwgroup->drive->hwif; | |
1195 | } | |
1196 | } | |
1197 | BUG_ON(hwgroup->drive == drive); | |
1198 | } | |
1199 | ||
1da177e4 LT |
1200 | static void drive_release_dev (struct device *dev) |
1201 | { | |
1202 | ide_drive_t *drive = container_of(dev, ide_drive_t, gendev); | |
1203 | ||
5b0c4b30 BZ |
1204 | ide_proc_unregister_device(drive); |
1205 | ||
8604affd | 1206 | spin_lock_irq(&ide_lock); |
8604affd | 1207 | ide_remove_drive_from_hwgroup(drive); |
6044ec88 JJ |
1208 | kfree(drive->id); |
1209 | drive->id = NULL; | |
8604affd BZ |
1210 | drive->present = 0; |
1211 | /* Messed up locking ... */ | |
1212 | spin_unlock_irq(&ide_lock); | |
1213 | blk_cleanup_queue(drive->queue); | |
1214 | spin_lock_irq(&ide_lock); | |
1215 | drive->queue = NULL; | |
1216 | spin_unlock_irq(&ide_lock); | |
1217 | ||
f36d4024 | 1218 | complete(&drive->gendev_rel_comp); |
1da177e4 LT |
1219 | } |
1220 | ||
0e33555f BZ |
1221 | #ifndef ide_default_irq |
1222 | #define ide_default_irq(irq) 0 | |
1223 | #endif | |
1224 | ||
1da177e4 LT |
1225 | static int hwif_init(ide_hwif_t *hwif) |
1226 | { | |
1227 | int old_irq; | |
1228 | ||
1da177e4 | 1229 | if (!hwif->irq) { |
4c3032d8 BZ |
1230 | hwif->irq = ide_default_irq(hwif->io_ports.data_addr); |
1231 | if (!hwif->irq) { | |
1da177e4 | 1232 | printk("%s: DISABLED, NO IRQ\n", hwif->name); |
48535651 | 1233 | return 0; |
1da177e4 LT |
1234 | } |
1235 | } | |
1da177e4 | 1236 | |
1da177e4 LT |
1237 | if (register_blkdev(hwif->major, hwif->name)) |
1238 | return 0; | |
1239 | ||
1240 | if (!hwif->sg_max_nents) | |
1241 | hwif->sg_max_nents = PRD_ENTRIES; | |
1242 | ||
45711f1a | 1243 | hwif->sg_table = kmalloc(sizeof(struct scatterlist)*hwif->sg_max_nents, |
1da177e4 LT |
1244 | GFP_KERNEL); |
1245 | if (!hwif->sg_table) { | |
1246 | printk(KERN_ERR "%s: unable to allocate SG table.\n", hwif->name); | |
1247 | goto out; | |
1248 | } | |
45711f1a JA |
1249 | |
1250 | sg_init_table(hwif->sg_table, hwif->sg_max_nents); | |
1da177e4 LT |
1251 | |
1252 | if (init_irq(hwif) == 0) | |
1253 | goto done; | |
1254 | ||
1255 | old_irq = hwif->irq; | |
1256 | /* | |
1257 | * It failed to initialise. Find the default IRQ for | |
1258 | * this port and try that. | |
1259 | */ | |
4c3032d8 BZ |
1260 | hwif->irq = ide_default_irq(hwif->io_ports.data_addr); |
1261 | if (!hwif->irq) { | |
1da177e4 LT |
1262 | printk("%s: Disabled unable to get IRQ %d.\n", |
1263 | hwif->name, old_irq); | |
1264 | goto out; | |
1265 | } | |
1266 | if (init_irq(hwif)) { | |
1267 | printk("%s: probed IRQ %d and default IRQ %d failed.\n", | |
1268 | hwif->name, old_irq, hwif->irq); | |
1269 | goto out; | |
1270 | } | |
1271 | printk("%s: probed IRQ %d failed, using default.\n", | |
1272 | hwif->name, hwif->irq); | |
1273 | ||
1274 | done: | |
3a4e7c96 BZ |
1275 | blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS, |
1276 | THIS_MODULE, ata_probe, ata_lock, hwif); | |
1da177e4 LT |
1277 | return 1; |
1278 | ||
1279 | out: | |
1280 | unregister_blkdev(hwif->major, hwif->name); | |
1281 | return 0; | |
1282 | } | |
1283 | ||
9601a607 BZ |
1284 | static void hwif_register_devices(ide_hwif_t *hwif) |
1285 | { | |
1286 | unsigned int i; | |
1287 | ||
1288 | for (i = 0; i < MAX_DRIVES; i++) { | |
1289 | ide_drive_t *drive = &hwif->drives[i]; | |
c5d70cc7 BZ |
1290 | struct device *dev = &drive->gendev; |
1291 | int ret; | |
9601a607 | 1292 | |
c5d70cc7 BZ |
1293 | if (!drive->present) |
1294 | continue; | |
9601a607 | 1295 | |
c5d70cc7 BZ |
1296 | ide_add_generic_settings(drive); |
1297 | ||
1298 | snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i); | |
1299 | dev->parent = &hwif->gendev; | |
1300 | dev->bus = &ide_bus_type; | |
1301 | dev->driver_data = drive; | |
1302 | dev->release = drive_release_dev; | |
1303 | ||
1304 | ret = device_register(dev); | |
1305 | if (ret < 0) | |
1306 | printk(KERN_WARNING "IDE: %s: device_register error: " | |
1307 | "%d\n", __func__, ret); | |
9601a607 BZ |
1308 | } |
1309 | } | |
1310 | ||
7704ca2a BZ |
1311 | static void ide_port_init_devices(ide_hwif_t *hwif) |
1312 | { | |
ac95beed | 1313 | const struct ide_port_ops *port_ops = hwif->port_ops; |
7704ca2a BZ |
1314 | int i; |
1315 | ||
1316 | for (i = 0; i < MAX_DRIVES; i++) { | |
1317 | ide_drive_t *drive = &hwif->drives[i]; | |
1318 | ||
1319 | if (hwif->host_flags & IDE_HFLAG_IO_32BIT) | |
1320 | drive->io_32bit = 1; | |
1321 | if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS) | |
1322 | drive->unmask = 1; | |
807b90d0 BZ |
1323 | if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS) |
1324 | drive->no_unmask = 1; | |
7704ca2a | 1325 | } |
1f2cf8b0 | 1326 | |
ac95beed BZ |
1327 | if (port_ops && port_ops->port_init_devs) |
1328 | port_ops->port_init_devs(hwif); | |
7704ca2a BZ |
1329 | } |
1330 | ||
c413b9b9 BZ |
1331 | static void ide_init_port(ide_hwif_t *hwif, unsigned int port, |
1332 | const struct ide_port_info *d) | |
8447d9d5 | 1333 | { |
b7691646 | 1334 | hwif->channel = port; |
c413b9b9 BZ |
1335 | |
1336 | if (d->chipset) | |
1337 | hwif->chipset = d->chipset; | |
1338 | ||
1339 | if (d->init_iops) | |
1340 | d->init_iops(hwif); | |
1341 | ||
c413b9b9 BZ |
1342 | if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) || |
1343 | (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS)) | |
1344 | hwif->irq = port ? 15 : 14; | |
1345 | ||
23f8e4bf BZ |
1346 | /* ->host_flags may be set by ->init_iops (or even earlier...) */ |
1347 | hwif->host_flags |= d->host_flags; | |
c413b9b9 BZ |
1348 | hwif->pio_mask = d->pio_mask; |
1349 | ||
ac95beed BZ |
1350 | /* ->set_pio_mode for DTC2278 is currently limited to port 0 */ |
1351 | if (hwif->chipset != ide_dtc2278 || hwif->channel == 0) | |
1352 | hwif->port_ops = d->port_ops; | |
1353 | ||
c413b9b9 BZ |
1354 | hwif->swdma_mask = d->swdma_mask; |
1355 | hwif->mwdma_mask = d->mwdma_mask; | |
1356 | hwif->ultra_mask = d->udma_mask; | |
1357 | ||
b123f56e BZ |
1358 | if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0) { |
1359 | int rc; | |
1360 | ||
1361 | if (d->init_dma) | |
1362 | rc = d->init_dma(hwif, d); | |
1363 | else | |
1364 | rc = ide_hwif_setup_dma(hwif, d); | |
1365 | ||
1366 | if (rc < 0) { | |
1367 | printk(KERN_INFO "%s: DMA disabled\n", hwif->name); | |
1368 | hwif->swdma_mask = 0; | |
1369 | hwif->mwdma_mask = 0; | |
1370 | hwif->ultra_mask = 0; | |
5e37bdc0 BZ |
1371 | } else if (d->dma_ops) |
1372 | hwif->dma_ops = d->dma_ops; | |
b123f56e | 1373 | } |
c413b9b9 | 1374 | |
1024c5f4 BZ |
1375 | if ((d->host_flags & IDE_HFLAG_SERIALIZE) || |
1376 | ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) { | |
1377 | if (hwif->mate) | |
1378 | hwif->mate->serialized = hwif->serialized = 1; | |
1379 | } | |
1380 | ||
c413b9b9 BZ |
1381 | if (d->host_flags & IDE_HFLAG_RQSIZE_256) |
1382 | hwif->rqsize = 256; | |
1383 | ||
1384 | /* call chipset specific routine for each enabled port */ | |
1385 | if (d->init_hwif) | |
1386 | d->init_hwif(hwif); | |
c7f6f21a | 1387 | } |
bfa14b42 | 1388 | |
c7f6f21a BZ |
1389 | static void ide_port_cable_detect(ide_hwif_t *hwif) |
1390 | { | |
ac95beed BZ |
1391 | const struct ide_port_ops *port_ops = hwif->port_ops; |
1392 | ||
1393 | if (port_ops && port_ops->cable_detect && (hwif->ultra_mask & 0x78)) { | |
bfa14b42 | 1394 | if (hwif->cbl != ATA_CBL_PATA40_SHORT) |
ac95beed | 1395 | hwif->cbl = port_ops->cable_detect(hwif); |
bfa14b42 | 1396 | } |
c413b9b9 BZ |
1397 | } |
1398 | ||
f74c9141 BZ |
1399 | static ssize_t store_delete_devices(struct device *portdev, |
1400 | struct device_attribute *attr, | |
1401 | const char *buf, size_t n) | |
1402 | { | |
1403 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1404 | ||
1405 | if (strncmp(buf, "1", n)) | |
1406 | return -EINVAL; | |
1407 | ||
1408 | ide_port_unregister_devices(hwif); | |
1409 | ||
1410 | return n; | |
1411 | }; | |
1412 | ||
1413 | static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices); | |
1414 | ||
1415 | static ssize_t store_scan(struct device *portdev, | |
1416 | struct device_attribute *attr, | |
1417 | const char *buf, size_t n) | |
1418 | { | |
1419 | ide_hwif_t *hwif = dev_get_drvdata(portdev); | |
1420 | ||
1421 | if (strncmp(buf, "1", n)) | |
1422 | return -EINVAL; | |
1423 | ||
1424 | ide_port_unregister_devices(hwif); | |
1425 | ide_port_scan(hwif); | |
1426 | ||
1427 | return n; | |
1428 | }; | |
1429 | ||
1430 | static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan); | |
1431 | ||
1432 | static struct device_attribute *ide_port_attrs[] = { | |
1433 | &dev_attr_delete_devices, | |
1434 | &dev_attr_scan, | |
1435 | NULL | |
1436 | }; | |
1437 | ||
1438 | static int ide_sysfs_register_port(ide_hwif_t *hwif) | |
1439 | { | |
1440 | int i, rc; | |
1441 | ||
1442 | for (i = 0; ide_port_attrs[i]; i++) { | |
1443 | rc = device_create_file(hwif->portdev, ide_port_attrs[i]); | |
1444 | if (rc) | |
1445 | break; | |
1446 | } | |
1447 | ||
1448 | return rc; | |
1449 | } | |
1450 | ||
fe80b937 BZ |
1451 | /** |
1452 | * ide_find_port_slot - find free ide_hwifs[] slot | |
1453 | * @d: IDE port info | |
1454 | * | |
1455 | * Return the new hwif. If we are out of free slots return NULL. | |
1456 | */ | |
1457 | ||
1458 | ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d) | |
1459 | { | |
1460 | ide_hwif_t *hwif; | |
1461 | int i; | |
1462 | u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1; | |
1463 | ||
1464 | /* | |
1465 | * Claim an unassigned slot. | |
1466 | * | |
1467 | * Give preference to claiming other slots before claiming ide0/ide1, | |
1468 | * just in case there's another interface yet-to-be-scanned | |
1469 | * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1470 | * | |
1471 | * Unless there is a bootable card that does not use the standard | |
1472 | * ports 0x1f0/0x170 (the ide0/ide1 defaults). | |
1473 | */ | |
1474 | if (bootable) { | |
e277f91f BZ |
1475 | i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0; |
1476 | ||
1477 | for (; i < MAX_HWIFS; i++) { | |
fe80b937 BZ |
1478 | hwif = &ide_hwifs[i]; |
1479 | if (hwif->chipset == ide_unknown) | |
1480 | return hwif; | |
1481 | } | |
1482 | } else { | |
1483 | for (i = 2; i < MAX_HWIFS; i++) { | |
1484 | hwif = &ide_hwifs[i]; | |
1485 | if (hwif->chipset == ide_unknown) | |
1486 | return hwif; | |
1487 | } | |
1488 | for (i = 0; i < 2 && i < MAX_HWIFS; i++) { | |
1489 | hwif = &ide_hwifs[i]; | |
1490 | if (hwif->chipset == ide_unknown) | |
1491 | return hwif; | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | return NULL; | |
1496 | } | |
1497 | EXPORT_SYMBOL_GPL(ide_find_port_slot); | |
1498 | ||
c413b9b9 BZ |
1499 | int ide_device_add_all(u8 *idx, const struct ide_port_info *d) |
1500 | { | |
1501 | ide_hwif_t *hwif, *mate = NULL; | |
8447d9d5 BZ |
1502 | int i, rc = 0; |
1503 | ||
c413b9b9 | 1504 | for (i = 0; i < MAX_HWIFS; i++) { |
9fd91d95 | 1505 | if (idx[i] == 0xff) { |
c413b9b9 BZ |
1506 | mate = NULL; |
1507 | continue; | |
1508 | } | |
1509 | ||
1510 | hwif = &ide_hwifs[idx[i]]; | |
1511 | ||
9fd91d95 BZ |
1512 | ide_port_apply_params(hwif); |
1513 | ||
1514 | if (d == NULL) { | |
1515 | mate = NULL; | |
1516 | continue; | |
1517 | } | |
1518 | ||
b7691646 | 1519 | if ((i & 1) && mate) { |
c413b9b9 BZ |
1520 | hwif->mate = mate; |
1521 | mate->mate = hwif; | |
1522 | } | |
1523 | ||
1524 | mate = (i & 1) ? NULL : hwif; | |
1525 | ||
1526 | ide_init_port(hwif, i & 1, d); | |
c7f6f21a | 1527 | ide_port_cable_detect(hwif); |
7704ca2a | 1528 | ide_port_init_devices(hwif); |
c413b9b9 BZ |
1529 | } |
1530 | ||
151575e4 | 1531 | for (i = 0; i < MAX_HWIFS; i++) { |
ba6560aa BZ |
1532 | if (idx[i] == 0xff) |
1533 | continue; | |
1534 | ||
139ddfca BZ |
1535 | hwif = &ide_hwifs[idx[i]]; |
1536 | ||
eb716beb BZ |
1537 | if (ide_probe_port(hwif) == 0) |
1538 | hwif->present = 1; | |
a14dc574 BZ |
1539 | |
1540 | if (hwif->chipset != ide_4drives || !hwif->mate || | |
1541 | !hwif->mate->present) | |
1542 | ide_register_port(hwif); | |
1543 | ||
eb716beb BZ |
1544 | if (hwif->present) |
1545 | ide_port_tune_devices(hwif); | |
2e13093a | 1546 | } |
ba6560aa | 1547 | |
151575e4 | 1548 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1549 | if (idx[i] == 0xff) |
1550 | continue; | |
1551 | ||
1552 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa BZ |
1553 | |
1554 | if (hwif_init(hwif) == 0) { | |
1555 | printk(KERN_INFO "%s: failed to initialize IDE " | |
1556 | "interface\n", hwif->name); | |
48535651 | 1557 | hwif->present = 0; |
ba6560aa BZ |
1558 | rc = -1; |
1559 | continue; | |
1560 | } | |
decdc3f0 | 1561 | |
eb716beb BZ |
1562 | if (hwif->present) |
1563 | ide_port_setup_devices(hwif); | |
26042d05 | 1564 | |
decdc3f0 | 1565 | ide_acpi_init(hwif); |
eb716beb BZ |
1566 | |
1567 | if (hwif->present) | |
1568 | ide_acpi_port_init_devices(hwif); | |
2e13093a BZ |
1569 | } |
1570 | ||
151575e4 | 1571 | for (i = 0; i < MAX_HWIFS; i++) { |
2e13093a BZ |
1572 | if (idx[i] == 0xff) |
1573 | continue; | |
1574 | ||
1575 | hwif = &ide_hwifs[idx[i]]; | |
ba6560aa | 1576 | |
eb716beb BZ |
1577 | if (hwif->chipset == ide_unknown) |
1578 | hwif->chipset = ide_generic; | |
1579 | ||
1580 | if (hwif->present) | |
ba6560aa | 1581 | hwif_register_devices(hwif); |
8447d9d5 BZ |
1582 | } |
1583 | ||
151575e4 | 1584 | for (i = 0; i < MAX_HWIFS; i++) { |
327617e1 BZ |
1585 | if (idx[i] == 0xff) |
1586 | continue; | |
1587 | ||
1588 | hwif = &ide_hwifs[idx[i]]; | |
1589 | ||
eb716beb BZ |
1590 | ide_sysfs_register_port(hwif); |
1591 | ide_proc_register_port(hwif); | |
1592 | ||
1593 | if (hwif->present) | |
d9270a3f | 1594 | ide_proc_port_register_devices(hwif); |
8447d9d5 BZ |
1595 | } |
1596 | ||
1597 | return rc; | |
1598 | } | |
151575e4 BZ |
1599 | EXPORT_SYMBOL_GPL(ide_device_add_all); |
1600 | ||
c413b9b9 | 1601 | int ide_device_add(u8 idx[4], const struct ide_port_info *d) |
151575e4 BZ |
1602 | { |
1603 | u8 idx_all[MAX_HWIFS]; | |
1604 | int i; | |
8447d9d5 | 1605 | |
151575e4 BZ |
1606 | for (i = 0; i < MAX_HWIFS; i++) |
1607 | idx_all[i] = (i < 4) ? idx[i] : 0xff; | |
1608 | ||
c413b9b9 | 1609 | return ide_device_add_all(idx_all, d); |
151575e4 | 1610 | } |
8447d9d5 | 1611 | EXPORT_SYMBOL_GPL(ide_device_add); |
2dde7861 BZ |
1612 | |
1613 | void ide_port_scan(ide_hwif_t *hwif) | |
1614 | { | |
9fd91d95 | 1615 | ide_port_apply_params(hwif); |
2dde7861 BZ |
1616 | ide_port_cable_detect(hwif); |
1617 | ide_port_init_devices(hwif); | |
1618 | ||
1619 | if (ide_probe_port(hwif) < 0) | |
1620 | return; | |
1621 | ||
1622 | hwif->present = 1; | |
1623 | ||
1624 | ide_port_tune_devices(hwif); | |
1625 | ide_acpi_port_init_devices(hwif); | |
1626 | ide_port_setup_devices(hwif); | |
1627 | hwif_register_devices(hwif); | |
1628 | ide_proc_port_register_devices(hwif); | |
1629 | } | |
1630 | EXPORT_SYMBOL_GPL(ide_port_scan); | |
3b36f66b | 1631 | |
d9b819a0 BZ |
1632 | static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no, |
1633 | const struct ide_port_info *d, | |
1634 | unsigned long config) | |
3b36f66b | 1635 | { |
d9b819a0 BZ |
1636 | ide_hwif_t *hwif; |
1637 | unsigned long base, ctl; | |
1638 | int irq; | |
3b36f66b | 1639 | |
d9b819a0 BZ |
1640 | if (port_no == 0) { |
1641 | base = 0x1f0; | |
1642 | ctl = 0x3f6; | |
1643 | irq = 14; | |
1644 | } else { | |
1645 | base = 0x170; | |
1646 | ctl = 0x376; | |
1647 | irq = 15; | |
1648 | } | |
3b36f66b | 1649 | |
d92f1a28 BZ |
1650 | if (!request_region(base, 8, d->name)) { |
1651 | printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n", | |
1652 | d->name, base, base + 7); | |
1653 | return; | |
1654 | } | |
1655 | ||
1656 | if (!request_region(ctl, 1, d->name)) { | |
1657 | printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n", | |
1658 | d->name, ctl); | |
1659 | release_region(base, 8); | |
1660 | return; | |
1661 | } | |
1662 | ||
d9b819a0 BZ |
1663 | ide_std_init_ports(hw, base, ctl); |
1664 | hw->irq = irq; | |
d427e836 | 1665 | hw->chipset = d->chipset; |
3b36f66b | 1666 | |
0bfeee7d | 1667 | hwif = ide_find_port_slot(d); |
3b36f66b | 1668 | if (hwif) { |
d9b819a0 | 1669 | ide_init_port_hw(hwif, hw); |
0bfeee7d BZ |
1670 | if (config) |
1671 | hwif->config_data = config; | |
d9b819a0 | 1672 | idx[port_no] = hwif->index; |
3b36f66b | 1673 | } |
d9b819a0 | 1674 | } |
3b36f66b | 1675 | |
d9b819a0 BZ |
1676 | int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config) |
1677 | { | |
1678 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; | |
1679 | hw_regs_t hw[2]; | |
0bfeee7d | 1680 | |
d9b819a0 BZ |
1681 | memset(&hw, 0, sizeof(hw)); |
1682 | ||
1683 | if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0) | |
1684 | ide_legacy_init_one(idx, &hw[0], 0, d, config); | |
1685 | ide_legacy_init_one(idx, &hw[1], 1, d, config); | |
1686 | ||
1687 | if (idx[0] == 0xff && idx[1] == 0xff && | |
1688 | (d->host_flags & IDE_HFLAG_SINGLE)) | |
1689 | return -ENOENT; | |
3b36f66b BZ |
1690 | |
1691 | ide_device_add(idx, d); | |
1692 | ||
1693 | return 0; | |
1694 | } | |
1695 | EXPORT_SYMBOL_GPL(ide_legacy_device_add); |