1 | /* $NetBSD: ata.c,v 1.132 2014/09/10 07:04:48 matt Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
16 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
17 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
18 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
19 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
20 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
21 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
22 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
23 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
24 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: ata.c,v 1.132 2014/09/10 07:04:48 matt Exp $" ); |
29 | |
30 | #include "opt_ata.h" |
31 | |
32 | #include <sys/param.h> |
33 | #include <sys/systm.h> |
34 | #include <sys/kernel.h> |
35 | #include <sys/malloc.h> |
36 | #include <sys/device.h> |
37 | #include <sys/conf.h> |
38 | #include <sys/fcntl.h> |
39 | #include <sys/proc.h> |
40 | #include <sys/pool.h> |
41 | #include <sys/kthread.h> |
42 | #include <sys/errno.h> |
43 | #include <sys/ataio.h> |
44 | #include <sys/kmem.h> |
45 | #include <sys/intr.h> |
46 | #include <sys/bus.h> |
47 | #include <sys/once.h> |
48 | |
49 | #include <dev/ata/ataconf.h> |
50 | #include <dev/ata/atareg.h> |
51 | #include <dev/ata/atavar.h> |
52 | #include <dev/ic/wdcvar.h> /* for PIOBM */ |
53 | |
54 | #include "locators.h" |
55 | |
56 | #include "atapibus.h" |
57 | #include "ataraid.h" |
58 | #include "sata_pmp.h" |
59 | |
60 | #if NATARAID > 0 |
61 | #include <dev/ata/ata_raidvar.h> |
62 | #endif |
63 | #if NSATA_PMP > 0 |
64 | #include <dev/ata/satapmpvar.h> |
65 | #endif |
66 | #include <dev/ata/satapmpreg.h> |
67 | |
68 | #define DEBUG_FUNCS 0x08 |
69 | #define DEBUG_PROBE 0x10 |
70 | #define DEBUG_DETACH 0x20 |
71 | #define DEBUG_XFERS 0x40 |
72 | #ifdef ATADEBUG |
73 | #ifndef ATADEBUG_MASK |
74 | #define ATADEBUG_MASK 0 |
75 | #endif |
76 | int atadebug_mask = ATADEBUG_MASK; |
77 | #define ATADEBUG_PRINT(args, level) \ |
78 | if (atadebug_mask & (level)) \ |
79 | printf args |
80 | #else |
81 | #define ATADEBUG_PRINT(args, level) |
82 | #endif |
83 | |
84 | static ONCE_DECL(ata_init_ctrl); |
85 | static struct pool ata_xfer_pool; |
86 | |
87 | /* |
88 | * A queue of atabus instances, used to ensure the same bus probe order |
89 | * for a given hardware configuration at each boot. Kthread probing |
90 | * devices on a atabus. Only one probing at once. |
91 | */ |
92 | static TAILQ_HEAD(, atabus_initq) atabus_initq_head; |
93 | static kmutex_t atabus_qlock; |
94 | static kcondvar_t atabus_qcv; |
95 | static lwp_t * atabus_cfg_lwp; |
96 | |
97 | /***************************************************************************** |
98 | * ATA bus layer. |
99 | * |
100 | * ATA controllers attach an atabus instance, which handles probing the bus |
101 | * for drives, etc. |
102 | *****************************************************************************/ |
103 | |
104 | dev_type_open(atabusopen); |
105 | dev_type_close(atabusclose); |
106 | dev_type_ioctl(atabusioctl); |
107 | |
108 | const struct cdevsw atabus_cdevsw = { |
109 | .d_open = atabusopen, |
110 | .d_close = atabusclose, |
111 | .d_read = noread, |
112 | .d_write = nowrite, |
113 | .d_ioctl = atabusioctl, |
114 | .d_stop = nostop, |
115 | .d_tty = notty, |
116 | .d_poll = nopoll, |
117 | .d_mmap = nommap, |
118 | .d_kqfilter = nokqfilter, |
119 | .d_discard = nodiscard, |
120 | .d_flag = D_OTHER |
121 | }; |
122 | |
123 | extern struct cfdriver atabus_cd; |
124 | |
125 | static void atabus_childdetached(device_t, device_t); |
126 | static int atabus_rescan(device_t, const char *, const int *); |
127 | static bool atabus_resume(device_t, const pmf_qual_t *); |
128 | static bool atabus_suspend(device_t, const pmf_qual_t *); |
129 | static void atabusconfig_thread(void *); |
130 | |
131 | /* |
132 | * atabus_init: |
133 | * |
134 | * Initialize ATA subsystem structures. |
135 | */ |
136 | static int |
137 | atabus_init(void) |
138 | { |
139 | |
140 | pool_init(&ata_xfer_pool, sizeof(struct ata_xfer), 0, 0, 0, |
141 | "ataspl" , NULL, IPL_BIO); |
142 | TAILQ_INIT(&atabus_initq_head); |
143 | mutex_init(&atabus_qlock, MUTEX_DEFAULT, IPL_NONE); |
144 | cv_init(&atabus_qcv, "atainitq" ); |
145 | return 0; |
146 | } |
147 | |
148 | /* |
149 | * atabusprint: |
150 | * |
151 | * Autoconfiguration print routine used by ATA controllers when |
152 | * attaching an atabus instance. |
153 | */ |
154 | int |
155 | atabusprint(void *aux, const char *pnp) |
156 | { |
157 | struct ata_channel *chan = aux; |
158 | |
159 | if (pnp) |
160 | aprint_normal("atabus at %s" , pnp); |
161 | aprint_normal(" channel %d" , chan->ch_channel); |
162 | |
163 | return (UNCONF); |
164 | } |
165 | |
166 | /* |
167 | * ataprint: |
168 | * |
169 | * Autoconfiguration print routine. |
170 | */ |
171 | int |
172 | ataprint(void *aux, const char *pnp) |
173 | { |
174 | struct ata_device *adev = aux; |
175 | |
176 | if (pnp) |
177 | aprint_normal("wd at %s" , pnp); |
178 | aprint_normal(" drive %d" , adev->adev_drv_data->drive); |
179 | |
180 | return (UNCONF); |
181 | } |
182 | |
183 | /* |
184 | * ata_channel_attach: |
185 | * |
186 | * Common parts of attaching an atabus to an ATA controller channel. |
187 | */ |
188 | void |
189 | ata_channel_attach(struct ata_channel *chp) |
190 | { |
191 | |
192 | if (chp->ch_flags & ATACH_DISABLED) |
193 | return; |
194 | |
195 | /* XXX callout_destroy */ |
196 | callout_init(&chp->ch_callout, 0); |
197 | |
198 | TAILQ_INIT(&chp->ch_queue->queue_xfer); |
199 | chp->ch_queue->queue_freeze = 0; |
200 | chp->ch_queue->queue_flags = 0; |
201 | chp->ch_queue->active_xfer = NULL; |
202 | |
203 | chp->atabus = config_found_ia(chp->ch_atac->atac_dev, "ata" , chp, |
204 | atabusprint); |
205 | } |
206 | |
207 | static void |
208 | atabusconfig(struct atabus_softc *atabus_sc) |
209 | { |
210 | struct ata_channel *chp = atabus_sc->sc_chan; |
211 | struct atac_softc *atac = chp->ch_atac; |
212 | struct atabus_initq *atabus_initq = NULL; |
213 | int i, s, error; |
214 | |
215 | /* we are in the atabus's thread context */ |
216 | s = splbio(); |
217 | chp->ch_flags |= ATACH_TH_RUN; |
218 | splx(s); |
219 | |
220 | /* |
221 | * Probe for the drives attached to controller, unless a PMP |
222 | * is already known |
223 | */ |
224 | /* XXX for SATA devices we will power up all drives at once */ |
225 | if (chp->ch_satapmp_nports == 0) |
226 | (*atac->atac_probe)(chp); |
227 | |
228 | if (chp->ch_ndrives >= 2) { |
229 | ATADEBUG_PRINT(("atabusattach: ch_drive_type 0x%x 0x%x\n" , |
230 | chp->ch_drive[0].drive_type, chp->ch_drive[1].drive_type), |
231 | DEBUG_PROBE); |
232 | } |
233 | |
234 | /* next operations will occurs in a separate thread */ |
235 | s = splbio(); |
236 | chp->ch_flags &= ~ATACH_TH_RUN; |
237 | splx(s); |
238 | |
239 | /* Make sure the devices probe in atabus order to avoid jitter. */ |
240 | mutex_enter(&atabus_qlock); |
241 | for (;;) { |
242 | atabus_initq = TAILQ_FIRST(&atabus_initq_head); |
243 | if (atabus_initq->atabus_sc == atabus_sc) |
244 | break; |
245 | cv_wait(&atabus_qcv, &atabus_qlock); |
246 | } |
247 | mutex_exit(&atabus_qlock); |
248 | |
249 | /* If no drives, abort here */ |
250 | if (chp->ch_drive == NULL) |
251 | goto out; |
252 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
253 | for (i = 0; i < chp->ch_ndrives; i++) |
254 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE) |
255 | break; |
256 | if (i == chp->ch_ndrives) |
257 | goto out; |
258 | |
259 | /* Shortcut in case we've been shutdown */ |
260 | if (chp->ch_flags & ATACH_SHUTDOWN) |
261 | goto out; |
262 | |
263 | if ((error = kthread_create(PRI_NONE, 0, NULL, atabusconfig_thread, |
264 | atabus_sc, &atabus_cfg_lwp, |
265 | "%scnf" , device_xname(atac->atac_dev))) != 0) |
266 | aprint_error_dev(atac->atac_dev, |
267 | "unable to create config thread: error %d\n" , error); |
268 | return; |
269 | |
270 | out: |
271 | mutex_enter(&atabus_qlock); |
272 | TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); |
273 | cv_broadcast(&atabus_qcv); |
274 | mutex_exit(&atabus_qlock); |
275 | |
276 | free(atabus_initq, M_DEVBUF); |
277 | |
278 | ata_delref(chp); |
279 | |
280 | config_pending_decr(atac->atac_dev); |
281 | } |
282 | |
283 | /* |
284 | * atabus_configthread: finish attach of atabus's childrens, in a separate |
285 | * kernel thread. |
286 | */ |
287 | static void |
288 | atabusconfig_thread(void *arg) |
289 | { |
290 | struct atabus_softc *atabus_sc = arg; |
291 | struct ata_channel *chp = atabus_sc->sc_chan; |
292 | struct atac_softc *atac = chp->ch_atac; |
293 | struct atabus_initq *atabus_initq = NULL; |
294 | int i, s; |
295 | |
296 | /* XXX seems wrong */ |
297 | mutex_enter(&atabus_qlock); |
298 | atabus_initq = TAILQ_FIRST(&atabus_initq_head); |
299 | KASSERT(atabus_initq->atabus_sc == atabus_sc); |
300 | mutex_exit(&atabus_qlock); |
301 | |
302 | /* |
303 | * First look for a port multiplier |
304 | */ |
305 | if (chp->ch_ndrives == PMP_MAX_DRIVES && |
306 | chp->ch_drive[PMP_PORT_CTL].drive_type == ATA_DRIVET_PM) { |
307 | #if NSATA_PMP > 0 |
308 | satapmp_attach(chp); |
309 | #else |
310 | aprint_error_dev(atabus_sc->sc_dev, |
311 | "SATA port multiplier not supported\n" ); |
312 | /* no problems going on, all drives are ATA_DRIVET_NONE */ |
313 | #endif |
314 | } |
315 | |
316 | /* |
317 | * Attach an ATAPI bus, if needed. |
318 | */ |
319 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
320 | for (i = 0; i < chp->ch_ndrives && chp->atapibus == NULL; i++) { |
321 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) { |
322 | #if NATAPIBUS > 0 |
323 | (*atac->atac_atapibus_attach)(atabus_sc); |
324 | #else |
325 | /* |
326 | * Fake the autoconfig "not configured" message |
327 | */ |
328 | aprint_normal("atapibus at %s not configured\n" , |
329 | device_xname(atac->atac_dev)); |
330 | chp->atapibus = NULL; |
331 | s = splbio(); |
332 | for (i = 0; i < chp->ch_ndrives; i++) { |
333 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
334 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
335 | } |
336 | splx(s); |
337 | #endif |
338 | break; |
339 | } |
340 | } |
341 | |
342 | for (i = 0; i < chp->ch_ndrives; i++) { |
343 | struct ata_device adev; |
344 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_ATA && |
345 | chp->ch_drive[i].drive_type != ATA_DRIVET_OLD) { |
346 | continue; |
347 | } |
348 | if (chp->ch_drive[i].drv_softc != NULL) |
349 | continue; |
350 | memset(&adev, 0, sizeof(struct ata_device)); |
351 | adev.adev_bustype = atac->atac_bustype_ata; |
352 | adev.adev_channel = chp->ch_channel; |
353 | adev.adev_openings = 1; |
354 | adev.adev_drv_data = &chp->ch_drive[i]; |
355 | chp->ch_drive[i].drv_softc = config_found_ia(atabus_sc->sc_dev, |
356 | "ata_hl" , &adev, ataprint); |
357 | if (chp->ch_drive[i].drv_softc != NULL) { |
358 | ata_probe_caps(&chp->ch_drive[i]); |
359 | } else { |
360 | s = splbio(); |
361 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
362 | splx(s); |
363 | } |
364 | } |
365 | |
366 | /* now that we know the drives, the controller can set its modes */ |
367 | if (atac->atac_set_modes) { |
368 | (*atac->atac_set_modes)(chp); |
369 | ata_print_modes(chp); |
370 | } |
371 | #if NATARAID > 0 |
372 | if (atac->atac_cap & ATAC_CAP_RAID) { |
373 | for (i = 0; i < chp->ch_ndrives; i++) { |
374 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATA) { |
375 | ata_raid_check_component( |
376 | chp->ch_drive[i].drv_softc); |
377 | } |
378 | } |
379 | } |
380 | #endif /* NATARAID > 0 */ |
381 | |
382 | /* |
383 | * reset drive_flags for unattached devices, reset state for attached |
384 | * ones |
385 | */ |
386 | s = splbio(); |
387 | for (i = 0; i < chp->ch_ndrives; i++) { |
388 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
389 | continue; |
390 | if (chp->ch_drive[i].drv_softc == NULL) { |
391 | chp->ch_drive[i].drive_flags = 0; |
392 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
393 | } else |
394 | chp->ch_drive[i].state = 0; |
395 | } |
396 | splx(s); |
397 | |
398 | mutex_enter(&atabus_qlock); |
399 | TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); |
400 | cv_broadcast(&atabus_qcv); |
401 | mutex_exit(&atabus_qlock); |
402 | |
403 | free(atabus_initq, M_DEVBUF); |
404 | |
405 | ata_delref(chp); |
406 | |
407 | config_pending_decr(atac->atac_dev); |
408 | kthread_exit(0); |
409 | } |
410 | |
411 | /* |
412 | * atabus_thread: |
413 | * |
414 | * Worker thread for the ATA bus. |
415 | */ |
416 | static void |
417 | atabus_thread(void *arg) |
418 | { |
419 | struct atabus_softc *sc = arg; |
420 | struct ata_channel *chp = sc->sc_chan; |
421 | struct ata_xfer *xfer; |
422 | int i, s; |
423 | |
424 | s = splbio(); |
425 | chp->ch_flags |= ATACH_TH_RUN; |
426 | |
427 | /* |
428 | * Probe the drives. Reset type to indicate to controllers |
429 | * that can re-probe that all drives must be probed.. |
430 | * |
431 | * Note: ch_ndrives may be changed during the probe. |
432 | */ |
433 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
434 | for (i = 0; i < chp->ch_ndrives; i++) { |
435 | chp->ch_drive[i].drive_flags = 0; |
436 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
437 | } |
438 | splx(s); |
439 | |
440 | atabusconfig(sc); |
441 | |
442 | s = splbio(); |
443 | for (;;) { |
444 | if ((chp->ch_flags & (ATACH_TH_RESET | ATACH_SHUTDOWN)) == 0 && |
445 | (chp->ch_queue->active_xfer == NULL || |
446 | chp->ch_queue->queue_freeze == 0)) { |
447 | chp->ch_flags &= ~ATACH_TH_RUN; |
448 | (void) tsleep(&chp->ch_thread, PRIBIO, "atath" , 0); |
449 | chp->ch_flags |= ATACH_TH_RUN; |
450 | } |
451 | if (chp->ch_flags & ATACH_SHUTDOWN) { |
452 | break; |
453 | } |
454 | if (chp->ch_flags & ATACH_TH_RESCAN) { |
455 | atabusconfig(sc); |
456 | chp->ch_flags &= ~ATACH_TH_RESCAN; |
457 | } |
458 | if (chp->ch_flags & ATACH_TH_RESET) { |
459 | /* |
460 | * ata_reset_channel() will freeze 2 times, so |
461 | * unfreeze one time. Not a problem as we're at splbio |
462 | */ |
463 | chp->ch_queue->queue_freeze--; |
464 | ata_reset_channel(chp, AT_WAIT | chp->ch_reset_flags); |
465 | } else if (chp->ch_queue->active_xfer != NULL && |
466 | chp->ch_queue->queue_freeze == 1) { |
467 | /* |
468 | * Caller has bumped queue_freeze, decrease it. |
469 | */ |
470 | chp->ch_queue->queue_freeze--; |
471 | xfer = chp->ch_queue->active_xfer; |
472 | KASSERT(xfer != NULL); |
473 | (*xfer->c_start)(xfer->c_chp, xfer); |
474 | } else if (chp->ch_queue->queue_freeze > 1) |
475 | panic("ata_thread: queue_freeze" ); |
476 | } |
477 | splx(s); |
478 | chp->ch_thread = NULL; |
479 | wakeup(&chp->ch_flags); |
480 | kthread_exit(0); |
481 | } |
482 | |
483 | /* |
484 | * atabus_match: |
485 | * |
486 | * Autoconfiguration match routine. |
487 | */ |
488 | static int |
489 | atabus_match(device_t parent, cfdata_t cf, void *aux) |
490 | { |
491 | struct ata_channel *chp = aux; |
492 | |
493 | if (chp == NULL) |
494 | return (0); |
495 | |
496 | if (cf->cf_loc[ATACF_CHANNEL] != chp->ch_channel && |
497 | cf->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT) |
498 | return (0); |
499 | |
500 | return (1); |
501 | } |
502 | |
503 | /* |
504 | * atabus_attach: |
505 | * |
506 | * Autoconfiguration attach routine. |
507 | */ |
508 | static void |
509 | atabus_attach(device_t parent, device_t self, void *aux) |
510 | { |
511 | struct atabus_softc *sc = device_private(self); |
512 | struct ata_channel *chp = aux; |
513 | struct atabus_initq *initq; |
514 | int error; |
515 | |
516 | sc->sc_chan = chp; |
517 | |
518 | aprint_normal("\n" ); |
519 | aprint_naive("\n" ); |
520 | |
521 | sc->sc_dev = self; |
522 | |
523 | if (ata_addref(chp)) |
524 | return; |
525 | |
526 | RUN_ONCE(&ata_init_ctrl, atabus_init); |
527 | |
528 | initq = malloc(sizeof(*initq), M_DEVBUF, M_WAITOK); |
529 | initq->atabus_sc = sc; |
530 | TAILQ_INSERT_TAIL(&atabus_initq_head, initq, atabus_initq); |
531 | config_pending_incr(sc->sc_dev); |
532 | |
533 | if ((error = kthread_create(PRI_NONE, 0, NULL, atabus_thread, sc, |
534 | &chp->ch_thread, "%s" , device_xname(self))) != 0) |
535 | aprint_error_dev(self, |
536 | "unable to create kernel thread: error %d\n" , error); |
537 | |
538 | if (!pmf_device_register(self, atabus_suspend, atabus_resume)) |
539 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
540 | } |
541 | |
542 | /* |
543 | * atabus_detach: |
544 | * |
545 | * Autoconfiguration detach routine. |
546 | */ |
547 | static int |
548 | atabus_detach(device_t self, int flags) |
549 | { |
550 | struct atabus_softc *sc = device_private(self); |
551 | struct ata_channel *chp = sc->sc_chan; |
552 | device_t dev = NULL; |
553 | int s, i, error = 0; |
554 | |
555 | /* Shutdown the channel. */ |
556 | s = splbio(); /* XXX ALSO NEED AN INTERLOCK HERE. */ |
557 | chp->ch_flags |= ATACH_SHUTDOWN; |
558 | splx(s); |
559 | |
560 | wakeup(&chp->ch_thread); |
561 | |
562 | while (chp->ch_thread != NULL) |
563 | (void) tsleep(&chp->ch_flags, PRIBIO, "atadown" , 0); |
564 | |
565 | |
566 | /* |
567 | * Detach atapibus and its children. |
568 | */ |
569 | if ((dev = chp->atapibus) != NULL) { |
570 | ATADEBUG_PRINT(("atabus_detach: %s: detaching %s\n" , |
571 | device_xname(self), device_xname(dev)), DEBUG_DETACH); |
572 | |
573 | error = config_detach(dev, flags); |
574 | if (error) |
575 | goto out; |
576 | KASSERT(chp->atapibus == NULL); |
577 | } |
578 | |
579 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
580 | |
581 | /* |
582 | * Detach our other children. |
583 | */ |
584 | for (i = 0; i < chp->ch_ndrives; i++) { |
585 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
586 | continue; |
587 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
588 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
589 | if ((dev = chp->ch_drive[i].drv_softc) != NULL) { |
590 | ATADEBUG_PRINT(("%s.%d: %s: detaching %s\n" , __func__, |
591 | __LINE__, device_xname(self), device_xname(dev)), |
592 | DEBUG_DETACH); |
593 | error = config_detach(dev, flags); |
594 | if (error) |
595 | goto out; |
596 | KASSERT(chp->ch_drive[i].drv_softc == NULL); |
597 | KASSERT(chp->ch_drive[i].drive_type == 0); |
598 | } |
599 | } |
600 | atabus_free_drives(chp); |
601 | |
602 | out: |
603 | #ifdef ATADEBUG |
604 | if (dev != NULL && error != 0) |
605 | ATADEBUG_PRINT(("%s: %s: error %d detaching %s\n" , __func__, |
606 | device_xname(self), error, device_xname(dev)), |
607 | DEBUG_DETACH); |
608 | #endif /* ATADEBUG */ |
609 | |
610 | return (error); |
611 | } |
612 | |
613 | void |
614 | atabus_childdetached(device_t self, device_t child) |
615 | { |
616 | bool found = false; |
617 | struct atabus_softc *sc = device_private(self); |
618 | struct ata_channel *chp = sc->sc_chan; |
619 | int i; |
620 | |
621 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
622 | /* |
623 | * atapibus detached. |
624 | */ |
625 | if (child == chp->atapibus) { |
626 | chp->atapibus = NULL; |
627 | found = true; |
628 | for (i = 0; i < chp->ch_ndrives; i++) { |
629 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_ATAPI) |
630 | continue; |
631 | KASSERT(chp->ch_drive[i].drv_softc != NULL); |
632 | chp->ch_drive[i].drv_softc = NULL; |
633 | chp->ch_drive[i].drive_flags = 0; |
634 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
635 | } |
636 | } |
637 | |
638 | /* |
639 | * Detach our other children. |
640 | */ |
641 | for (i = 0; i < chp->ch_ndrives; i++) { |
642 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
643 | continue; |
644 | if (child == chp->ch_drive[i].drv_softc) { |
645 | chp->ch_drive[i].drv_softc = NULL; |
646 | chp->ch_drive[i].drive_flags = 0; |
647 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
648 | chp->ch_satapmp_nports = 0; |
649 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
650 | found = true; |
651 | } |
652 | } |
653 | |
654 | if (!found) |
655 | panic("%s: unknown child %p" , device_xname(self), |
656 | (const void *)child); |
657 | } |
658 | |
659 | CFATTACH_DECL3_NEW(atabus, sizeof(struct atabus_softc), |
660 | atabus_match, atabus_attach, atabus_detach, NULL, atabus_rescan, |
661 | atabus_childdetached, DVF_DETACH_SHUTDOWN); |
662 | |
663 | /***************************************************************************** |
664 | * Common ATA bus operations. |
665 | *****************************************************************************/ |
666 | |
667 | /* allocate/free the channel's ch_drive[] array */ |
668 | int |
669 | atabus_alloc_drives(struct ata_channel *chp, int ndrives) |
670 | { |
671 | int i; |
672 | if (chp->ch_ndrives != ndrives) |
673 | atabus_free_drives(chp); |
674 | if (chp->ch_drive == NULL) { |
675 | chp->ch_drive = malloc( |
676 | sizeof(struct ata_drive_datas) * ndrives, |
677 | M_DEVBUF, M_NOWAIT | M_ZERO); |
678 | } |
679 | if (chp->ch_drive == NULL) { |
680 | aprint_error_dev(chp->ch_atac->atac_dev, |
681 | "can't alloc drive array\n" ); |
682 | chp->ch_ndrives = 0; |
683 | return ENOMEM; |
684 | }; |
685 | for (i = 0; i < ndrives; i++) { |
686 | chp->ch_drive[i].chnl_softc = chp; |
687 | chp->ch_drive[i].drive = i; |
688 | } |
689 | chp->ch_ndrives = ndrives; |
690 | return 0; |
691 | } |
692 | |
693 | void |
694 | atabus_free_drives(struct ata_channel *chp) |
695 | { |
696 | #ifdef DIAGNOSTIC |
697 | int i; |
698 | int dopanic = 0; |
699 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
700 | for (i = 0; i < chp->ch_ndrives; i++) { |
701 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE) { |
702 | printf("%s: ch_drive[%d] type %d != ATA_DRIVET_NONE\n" , |
703 | device_xname(chp->atabus), i, |
704 | chp->ch_drive[i].drive_type); |
705 | dopanic = 1; |
706 | } |
707 | if (chp->ch_drive[i].drv_softc != NULL) { |
708 | printf("%s: ch_drive[%d] attached to %s\n" , |
709 | device_xname(chp->atabus), i, |
710 | device_xname(chp->ch_drive[i].drv_softc)); |
711 | dopanic = 1; |
712 | } |
713 | } |
714 | if (dopanic) |
715 | panic("atabus_free_drives" ); |
716 | #endif |
717 | |
718 | if (chp->ch_drive == NULL) |
719 | return; |
720 | chp->ch_ndrives = 0; |
721 | free(chp->ch_drive, M_DEVBUF); |
722 | chp->ch_drive = NULL; |
723 | } |
724 | |
725 | /* Get the disk's parameters */ |
726 | int |
727 | ata_get_params(struct ata_drive_datas *drvp, uint8_t flags, |
728 | struct ataparams *prms) |
729 | { |
730 | struct ata_command ata_c; |
731 | struct ata_channel *chp = drvp->chnl_softc; |
732 | struct atac_softc *atac = chp->ch_atac; |
733 | char *tb; |
734 | int i, rv; |
735 | uint16_t *p; |
736 | |
737 | ATADEBUG_PRINT(("%s\n" , __func__), DEBUG_FUNCS); |
738 | |
739 | tb = kmem_zalloc(DEV_BSIZE, KM_SLEEP); |
740 | memset(prms, 0, sizeof(struct ataparams)); |
741 | memset(&ata_c, 0, sizeof(struct ata_command)); |
742 | |
743 | if (drvp->drive_type == ATA_DRIVET_ATA) { |
744 | ata_c.r_command = WDCC_IDENTIFY; |
745 | ata_c.r_st_bmask = WDCS_DRDY; |
746 | ata_c.r_st_pmask = WDCS_DRQ; |
747 | ata_c.timeout = 3000; /* 3s */ |
748 | } else if (drvp->drive_type == ATA_DRIVET_ATAPI) { |
749 | ata_c.r_command = ATAPI_IDENTIFY_DEVICE; |
750 | ata_c.r_st_bmask = 0; |
751 | ata_c.r_st_pmask = WDCS_DRQ; |
752 | ata_c.timeout = 10000; /* 10s */ |
753 | } else { |
754 | ATADEBUG_PRINT(("ata_get_parms: no disks\n" ), |
755 | DEBUG_FUNCS|DEBUG_PROBE); |
756 | rv = CMD_ERR; |
757 | goto out; |
758 | } |
759 | ata_c.flags = AT_READ | flags; |
760 | ata_c.data = tb; |
761 | ata_c.bcount = DEV_BSIZE; |
762 | if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, |
763 | &ata_c) != ATACMD_COMPLETE) { |
764 | ATADEBUG_PRINT(("ata_get_parms: wdc_exec_command failed\n" ), |
765 | DEBUG_FUNCS|DEBUG_PROBE); |
766 | rv = CMD_AGAIN; |
767 | goto out; |
768 | } |
769 | if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { |
770 | ATADEBUG_PRINT(("ata_get_parms: ata_c.flags=0x%x\n" , |
771 | ata_c.flags), DEBUG_FUNCS|DEBUG_PROBE); |
772 | rv = CMD_ERR; |
773 | goto out; |
774 | } |
775 | /* if we didn't read any data something is wrong */ |
776 | if ((ata_c.flags & AT_XFDONE) == 0) { |
777 | rv = CMD_ERR; |
778 | goto out; |
779 | } |
780 | |
781 | /* Read in parameter block. */ |
782 | memcpy(prms, tb, sizeof(struct ataparams)); |
783 | |
784 | /* |
785 | * Shuffle string byte order. |
786 | * ATAPI NEC, Mitsumi and Pioneer drives and |
787 | * old ATA TDK CompactFlash cards |
788 | * have different byte order. |
789 | */ |
790 | #if BYTE_ORDER == BIG_ENDIAN |
791 | # define M(n) prms->atap_model[(n) ^ 1] |
792 | #else |
793 | # define M(n) prms->atap_model[n] |
794 | #endif |
795 | if ( |
796 | #if BYTE_ORDER == BIG_ENDIAN |
797 | ! |
798 | #endif |
799 | ((drvp->drive_type == ATA_DRIVET_ATAPI) ? |
800 | ((M(0) == 'N' && M(1) == 'E') || |
801 | (M(0) == 'F' && M(1) == 'X') || |
802 | (M(0) == 'P' && M(1) == 'i')) : |
803 | ((M(0) == 'T' && M(1) == 'D' && M(2) == 'K')))) { |
804 | rv = CMD_OK; |
805 | goto out; |
806 | } |
807 | #undef M |
808 | for (i = 0; i < sizeof(prms->atap_model); i += 2) { |
809 | p = (uint16_t *)(prms->atap_model + i); |
810 | *p = bswap16(*p); |
811 | } |
812 | for (i = 0; i < sizeof(prms->atap_serial); i += 2) { |
813 | p = (uint16_t *)(prms->atap_serial + i); |
814 | *p = bswap16(*p); |
815 | } |
816 | for (i = 0; i < sizeof(prms->atap_revision); i += 2) { |
817 | p = (uint16_t *)(prms->atap_revision + i); |
818 | *p = bswap16(*p); |
819 | } |
820 | |
821 | rv = CMD_OK; |
822 | out: |
823 | kmem_free(tb, DEV_BSIZE); |
824 | return rv; |
825 | } |
826 | |
827 | int |
828 | ata_set_mode(struct ata_drive_datas *drvp, uint8_t mode, uint8_t flags) |
829 | { |
830 | struct ata_command ata_c; |
831 | struct ata_channel *chp = drvp->chnl_softc; |
832 | struct atac_softc *atac = chp->ch_atac; |
833 | |
834 | ATADEBUG_PRINT(("ata_set_mode=0x%x\n" , mode), DEBUG_FUNCS); |
835 | memset(&ata_c, 0, sizeof(struct ata_command)); |
836 | |
837 | ata_c.r_command = SET_FEATURES; |
838 | ata_c.r_st_bmask = 0; |
839 | ata_c.r_st_pmask = 0; |
840 | ata_c.r_features = WDSF_SET_MODE; |
841 | ata_c.r_count = mode; |
842 | ata_c.flags = flags; |
843 | ata_c.timeout = 1000; /* 1s */ |
844 | if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, |
845 | &ata_c) != ATACMD_COMPLETE) |
846 | return CMD_AGAIN; |
847 | if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { |
848 | return CMD_ERR; |
849 | } |
850 | return CMD_OK; |
851 | } |
852 | |
853 | #if NATA_DMA |
854 | void |
855 | ata_dmaerr(struct ata_drive_datas *drvp, int flags) |
856 | { |
857 | /* |
858 | * Downgrade decision: if we get NERRS_MAX in NXFER. |
859 | * We start with n_dmaerrs set to NERRS_MAX-1 so that the |
860 | * first error within the first NXFER ops will immediatly trigger |
861 | * a downgrade. |
862 | * If we got an error and n_xfers is bigger than NXFER reset counters. |
863 | */ |
864 | drvp->n_dmaerrs++; |
865 | if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) { |
866 | ata_downgrade_mode(drvp, flags); |
867 | drvp->n_dmaerrs = NERRS_MAX-1; |
868 | drvp->n_xfers = 0; |
869 | return; |
870 | } |
871 | if (drvp->n_xfers > NXFER) { |
872 | drvp->n_dmaerrs = 1; /* just got an error */ |
873 | drvp->n_xfers = 1; /* restart counting from this error */ |
874 | } |
875 | } |
876 | #endif /* NATA_DMA */ |
877 | |
878 | /* |
879 | * freeze the queue and wait for the controller to be idle. Caller has to |
880 | * unfreeze/restart the queue |
881 | */ |
882 | void |
883 | ata_queue_idle(struct ata_queue *queue) |
884 | { |
885 | int s = splbio(); |
886 | queue->queue_freeze++; |
887 | while (queue->active_xfer != NULL) { |
888 | queue->queue_flags |= QF_IDLE_WAIT; |
889 | tsleep(&queue->queue_flags, PRIBIO, "qidl" , 0); |
890 | } |
891 | splx(s); |
892 | } |
893 | |
894 | /* |
895 | * Add a command to the queue and start controller. |
896 | * |
897 | * MUST BE CALLED AT splbio()! |
898 | */ |
899 | void |
900 | ata_exec_xfer(struct ata_channel *chp, struct ata_xfer *xfer) |
901 | { |
902 | |
903 | ATADEBUG_PRINT(("ata_exec_xfer %p channel %d drive %d\n" , xfer, |
904 | chp->ch_channel, xfer->c_drive), DEBUG_XFERS); |
905 | |
906 | /* complete xfer setup */ |
907 | xfer->c_chp = chp; |
908 | |
909 | /* insert at the end of command list */ |
910 | TAILQ_INSERT_TAIL(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
911 | ATADEBUG_PRINT(("atastart from ata_exec_xfer, flags 0x%x\n" , |
912 | chp->ch_flags), DEBUG_XFERS); |
913 | /* |
914 | * if polling and can sleep, wait for the xfer to be at head of queue |
915 | */ |
916 | if ((xfer->c_flags & (C_POLL | C_WAIT)) == (C_POLL | C_WAIT)) { |
917 | while (chp->ch_queue->active_xfer != NULL || |
918 | TAILQ_FIRST(&chp->ch_queue->queue_xfer) != xfer) { |
919 | xfer->c_flags |= C_WAITACT; |
920 | tsleep(xfer, PRIBIO, "ataact" , 0); |
921 | xfer->c_flags &= ~C_WAITACT; |
922 | if (xfer->c_flags & C_FREE) { |
923 | ata_free_xfer(chp, xfer); |
924 | return; |
925 | } |
926 | } |
927 | } |
928 | atastart(chp); |
929 | } |
930 | |
931 | /* |
932 | * Start I/O on a controller, for the given channel. |
933 | * The first xfer may be not for our channel if the channel queues |
934 | * are shared. |
935 | * |
936 | * MUST BE CALLED AT splbio()! |
937 | */ |
938 | void |
939 | atastart(struct ata_channel *chp) |
940 | { |
941 | struct atac_softc *atac = chp->ch_atac; |
942 | struct ata_xfer *xfer; |
943 | |
944 | #ifdef ATA_DEBUG |
945 | int spl1, spl2; |
946 | |
947 | spl1 = splbio(); |
948 | spl2 = splbio(); |
949 | if (spl2 != spl1) { |
950 | printf("atastart: not at splbio()\n" ); |
951 | panic("atastart" ); |
952 | } |
953 | splx(spl2); |
954 | splx(spl1); |
955 | #endif /* ATA_DEBUG */ |
956 | |
957 | /* is there a xfer ? */ |
958 | if ((xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer)) == NULL) |
959 | return; |
960 | |
961 | /* adjust chp, in case we have a shared queue */ |
962 | chp = xfer->c_chp; |
963 | |
964 | if (chp->ch_queue->active_xfer != NULL) { |
965 | return; /* channel aleady active */ |
966 | } |
967 | if (__predict_false(chp->ch_queue->queue_freeze > 0)) { |
968 | if (chp->ch_queue->queue_flags & QF_IDLE_WAIT) { |
969 | chp->ch_queue->queue_flags &= ~QF_IDLE_WAIT; |
970 | wakeup(&chp->ch_queue->queue_flags); |
971 | } |
972 | return; /* queue frozen */ |
973 | } |
974 | /* |
975 | * if someone is waiting for the command to be active, wake it up |
976 | * and let it process the command |
977 | */ |
978 | if (xfer->c_flags & C_WAITACT) { |
979 | ATADEBUG_PRINT(("atastart: xfer %p channel %d drive %d " |
980 | "wait active\n" , xfer, chp->ch_channel, xfer->c_drive), |
981 | DEBUG_XFERS); |
982 | wakeup(xfer); |
983 | return; |
984 | } |
985 | #ifdef DIAGNOSTIC |
986 | if ((chp->ch_flags & ATACH_IRQ_WAIT) != 0) |
987 | panic("atastart: channel waiting for irq" ); |
988 | #endif |
989 | if (atac->atac_claim_hw) |
990 | if (!(*atac->atac_claim_hw)(chp, 0)) |
991 | return; |
992 | |
993 | ATADEBUG_PRINT(("atastart: xfer %p channel %d drive %d\n" , xfer, |
994 | chp->ch_channel, xfer->c_drive), DEBUG_XFERS); |
995 | if (chp->ch_drive[xfer->c_drive].drive_flags & ATA_DRIVE_RESET) { |
996 | chp->ch_drive[xfer->c_drive].drive_flags &= ~ATA_DRIVE_RESET; |
997 | chp->ch_drive[xfer->c_drive].state = 0; |
998 | } |
999 | chp->ch_queue->active_xfer = xfer; |
1000 | TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
1001 | |
1002 | if (atac->atac_cap & ATAC_CAP_NOIRQ) |
1003 | KASSERT(xfer->c_flags & C_POLL); |
1004 | |
1005 | xfer->c_start(chp, xfer); |
1006 | } |
1007 | |
1008 | struct ata_xfer * |
1009 | ata_get_xfer(int flags) |
1010 | { |
1011 | struct ata_xfer *xfer; |
1012 | int s; |
1013 | |
1014 | s = splbio(); |
1015 | xfer = pool_get(&ata_xfer_pool, |
1016 | ((flags & ATAXF_NOSLEEP) != 0 ? PR_NOWAIT : PR_WAITOK)); |
1017 | splx(s); |
1018 | if (xfer != NULL) { |
1019 | memset(xfer, 0, sizeof(struct ata_xfer)); |
1020 | } |
1021 | return xfer; |
1022 | } |
1023 | |
1024 | void |
1025 | ata_free_xfer(struct ata_channel *chp, struct ata_xfer *xfer) |
1026 | { |
1027 | struct atac_softc *atac = chp->ch_atac; |
1028 | int s; |
1029 | |
1030 | if (xfer->c_flags & C_WAITACT) { |
1031 | /* Someone is waiting for this xfer, so we can't free now */ |
1032 | xfer->c_flags |= C_FREE; |
1033 | wakeup(xfer); |
1034 | return; |
1035 | } |
1036 | |
1037 | #if NATA_PIOBM /* XXX wdc dependent code */ |
1038 | if (xfer->c_flags & C_PIOBM) { |
1039 | struct wdc_softc *wdc = CHAN_TO_WDC(chp); |
1040 | |
1041 | /* finish the busmastering PIO */ |
1042 | (*wdc->piobm_done)(wdc->dma_arg, |
1043 | chp->ch_channel, xfer->c_drive); |
1044 | chp->ch_flags &= ~(ATACH_DMA_WAIT | ATACH_PIOBM_WAIT | ATACH_IRQ_WAIT); |
1045 | } |
1046 | #endif |
1047 | |
1048 | if (atac->atac_free_hw) |
1049 | (*atac->atac_free_hw)(chp); |
1050 | s = splbio(); |
1051 | pool_put(&ata_xfer_pool, xfer); |
1052 | splx(s); |
1053 | } |
1054 | |
1055 | /* |
1056 | * Kill off all pending xfers for a ata_channel. |
1057 | * |
1058 | * Must be called at splbio(). |
1059 | */ |
1060 | void |
1061 | ata_kill_pending(struct ata_drive_datas *drvp) |
1062 | { |
1063 | struct ata_channel *chp = drvp->chnl_softc; |
1064 | struct ata_xfer *xfer, *next_xfer; |
1065 | int s = splbio(); |
1066 | |
1067 | for (xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); |
1068 | xfer != NULL; xfer = next_xfer) { |
1069 | next_xfer = TAILQ_NEXT(xfer, c_xferchain); |
1070 | if (xfer->c_chp != chp || xfer->c_drive != drvp->drive) |
1071 | continue; |
1072 | TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
1073 | (*xfer->c_kill_xfer)(chp, xfer, KILL_GONE); |
1074 | } |
1075 | |
1076 | while ((xfer = chp->ch_queue->active_xfer) != NULL) { |
1077 | if (xfer->c_chp == chp && xfer->c_drive == drvp->drive) { |
1078 | drvp->drive_flags |= ATA_DRIVE_WAITDRAIN; |
1079 | (void) tsleep(&chp->ch_queue->active_xfer, |
1080 | PRIBIO, "atdrn" , 0); |
1081 | } else { |
1082 | /* no more xfer for us */ |
1083 | break; |
1084 | } |
1085 | } |
1086 | splx(s); |
1087 | } |
1088 | |
1089 | /* |
1090 | * ata_reset_channel: |
1091 | * |
1092 | * Reset and ATA channel. |
1093 | * |
1094 | * MUST BE CALLED AT splbio()! |
1095 | */ |
1096 | void |
1097 | ata_reset_channel(struct ata_channel *chp, int flags) |
1098 | { |
1099 | struct atac_softc *atac = chp->ch_atac; |
1100 | int drive; |
1101 | |
1102 | #ifdef ATA_DEBUG |
1103 | int spl1, spl2; |
1104 | |
1105 | spl1 = splbio(); |
1106 | spl2 = splbio(); |
1107 | if (spl2 != spl1) { |
1108 | printf("ata_reset_channel: not at splbio()\n" ); |
1109 | panic("ata_reset_channel" ); |
1110 | } |
1111 | splx(spl2); |
1112 | splx(spl1); |
1113 | #endif /* ATA_DEBUG */ |
1114 | |
1115 | chp->ch_queue->queue_freeze++; |
1116 | |
1117 | /* |
1118 | * If we can poll or wait it's OK, otherwise wake up the |
1119 | * kernel thread to do it for us. |
1120 | */ |
1121 | ATADEBUG_PRINT(("ata_reset_channel flags 0x%x ch_flags 0x%x\n" , |
1122 | flags, chp->ch_flags), DEBUG_FUNCS | DEBUG_XFERS); |
1123 | if ((flags & (AT_POLL | AT_WAIT)) == 0) { |
1124 | if (chp->ch_flags & ATACH_TH_RESET) { |
1125 | /* No need to schedule a reset more than one time. */ |
1126 | chp->ch_queue->queue_freeze--; |
1127 | return; |
1128 | } |
1129 | chp->ch_flags |= ATACH_TH_RESET; |
1130 | chp->ch_reset_flags = flags & (AT_RST_EMERG | AT_RST_NOCMD); |
1131 | wakeup(&chp->ch_thread); |
1132 | return; |
1133 | } |
1134 | |
1135 | (*atac->atac_bustype_ata->ata_reset_channel)(chp, flags); |
1136 | |
1137 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
1138 | for (drive = 0; drive < chp->ch_ndrives; drive++) |
1139 | chp->ch_drive[drive].state = 0; |
1140 | |
1141 | chp->ch_flags &= ~ATACH_TH_RESET; |
1142 | if ((flags & AT_RST_EMERG) == 0) { |
1143 | chp->ch_queue->queue_freeze--; |
1144 | atastart(chp); |
1145 | } else { |
1146 | /* make sure that we can use polled commands */ |
1147 | TAILQ_INIT(&chp->ch_queue->queue_xfer); |
1148 | chp->ch_queue->queue_freeze = 0; |
1149 | chp->ch_queue->active_xfer = NULL; |
1150 | } |
1151 | } |
1152 | |
1153 | int |
1154 | ata_addref(struct ata_channel *chp) |
1155 | { |
1156 | struct atac_softc *atac = chp->ch_atac; |
1157 | struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic; |
1158 | int s, error = 0; |
1159 | |
1160 | s = splbio(); |
1161 | if (adapt->adapt_refcnt++ == 0 && |
1162 | adapt->adapt_enable != NULL) { |
1163 | error = (*adapt->adapt_enable)(atac->atac_dev, 1); |
1164 | if (error) |
1165 | adapt->adapt_refcnt--; |
1166 | } |
1167 | splx(s); |
1168 | return (error); |
1169 | } |
1170 | |
1171 | void |
1172 | ata_delref(struct ata_channel *chp) |
1173 | { |
1174 | struct atac_softc *atac = chp->ch_atac; |
1175 | struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic; |
1176 | int s; |
1177 | |
1178 | s = splbio(); |
1179 | if (adapt->adapt_refcnt-- == 1 && |
1180 | adapt->adapt_enable != NULL) |
1181 | (void) (*adapt->adapt_enable)(atac->atac_dev, 0); |
1182 | splx(s); |
1183 | } |
1184 | |
1185 | void |
1186 | ata_print_modes(struct ata_channel *chp) |
1187 | { |
1188 | struct atac_softc *atac = chp->ch_atac; |
1189 | int drive; |
1190 | struct ata_drive_datas *drvp; |
1191 | |
1192 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
1193 | for (drive = 0; drive < chp->ch_ndrives; drive++) { |
1194 | drvp = &chp->ch_drive[drive]; |
1195 | if (drvp->drive_type == ATA_DRIVET_NONE || |
1196 | drvp->drv_softc == NULL) |
1197 | continue; |
1198 | aprint_verbose("%s(%s:%d:%d): using PIO mode %d" , |
1199 | device_xname(drvp->drv_softc), |
1200 | device_xname(atac->atac_dev), |
1201 | chp->ch_channel, drvp->drive, drvp->PIO_mode); |
1202 | #if NATA_DMA |
1203 | if (drvp->drive_flags & ATA_DRIVE_DMA) |
1204 | aprint_verbose(", DMA mode %d" , drvp->DMA_mode); |
1205 | #if NATA_UDMA |
1206 | if (drvp->drive_flags & ATA_DRIVE_UDMA) { |
1207 | aprint_verbose(", Ultra-DMA mode %d" , drvp->UDMA_mode); |
1208 | if (drvp->UDMA_mode == 2) |
1209 | aprint_verbose(" (Ultra/33)" ); |
1210 | else if (drvp->UDMA_mode == 4) |
1211 | aprint_verbose(" (Ultra/66)" ); |
1212 | else if (drvp->UDMA_mode == 5) |
1213 | aprint_verbose(" (Ultra/100)" ); |
1214 | else if (drvp->UDMA_mode == 6) |
1215 | aprint_verbose(" (Ultra/133)" ); |
1216 | } |
1217 | #endif /* NATA_UDMA */ |
1218 | #endif /* NATA_DMA */ |
1219 | #if NATA_DMA || NATA_PIOBM |
1220 | if (0 |
1221 | #if NATA_DMA |
1222 | || (drvp->drive_flags & (ATA_DRIVE_DMA | ATA_DRIVE_UDMA)) |
1223 | #endif |
1224 | #if NATA_PIOBM |
1225 | /* PIOBM capable controllers use DMA for PIO commands */ |
1226 | || (atac->atac_cap & ATAC_CAP_PIOBM) |
1227 | #endif |
1228 | ) |
1229 | aprint_verbose(" (using DMA)" ); |
1230 | #endif /* NATA_DMA || NATA_PIOBM */ |
1231 | aprint_verbose("\n" ); |
1232 | } |
1233 | } |
1234 | |
1235 | #if NATA_DMA |
1236 | /* |
1237 | * downgrade the transfer mode of a drive after an error. return 1 if |
1238 | * downgrade was possible, 0 otherwise. |
1239 | * |
1240 | * MUST BE CALLED AT splbio()! |
1241 | */ |
1242 | int |
1243 | ata_downgrade_mode(struct ata_drive_datas *drvp, int flags) |
1244 | { |
1245 | struct ata_channel *chp = drvp->chnl_softc; |
1246 | struct atac_softc *atac = chp->ch_atac; |
1247 | device_t drv_dev = drvp->drv_softc; |
1248 | int cf_flags = device_cfdata(drv_dev)->cf_flags; |
1249 | |
1250 | /* if drive or controller don't know its mode, we can't do much */ |
1251 | if ((drvp->drive_flags & ATA_DRIVE_MODE) == 0 || |
1252 | (atac->atac_set_modes == NULL)) |
1253 | return 0; |
1254 | /* current drive mode was set by a config flag, let it this way */ |
1255 | if ((cf_flags & ATA_CONFIG_PIO_SET) || |
1256 | (cf_flags & ATA_CONFIG_DMA_SET) || |
1257 | (cf_flags & ATA_CONFIG_UDMA_SET)) |
1258 | return 0; |
1259 | |
1260 | #if NATA_UDMA |
1261 | /* |
1262 | * If we were using Ultra-DMA mode, downgrade to the next lower mode. |
1263 | */ |
1264 | if ((drvp->drive_flags & ATA_DRIVE_UDMA) && drvp->UDMA_mode >= 2) { |
1265 | drvp->UDMA_mode--; |
1266 | aprint_error_dev(drv_dev, |
1267 | "transfer error, downgrading to Ultra-DMA mode %d\n" , |
1268 | drvp->UDMA_mode); |
1269 | } |
1270 | #endif |
1271 | |
1272 | /* |
1273 | * If we were using ultra-DMA, don't downgrade to multiword DMA. |
1274 | */ |
1275 | else if (drvp->drive_flags & (ATA_DRIVE_DMA | ATA_DRIVE_UDMA)) { |
1276 | drvp->drive_flags &= ~(ATA_DRIVE_DMA | ATA_DRIVE_UDMA); |
1277 | drvp->PIO_mode = drvp->PIO_cap; |
1278 | aprint_error_dev(drv_dev, |
1279 | "transfer error, downgrading to PIO mode %d\n" , |
1280 | drvp->PIO_mode); |
1281 | } else /* already using PIO, can't downgrade */ |
1282 | return 0; |
1283 | |
1284 | (*atac->atac_set_modes)(chp); |
1285 | ata_print_modes(chp); |
1286 | /* reset the channel, which will schedule all drives for setup */ |
1287 | ata_reset_channel(chp, flags | AT_RST_NOCMD); |
1288 | return 1; |
1289 | } |
1290 | #endif /* NATA_DMA */ |
1291 | |
1292 | /* |
1293 | * Probe drive's capabilities, for use by the controller later |
1294 | * Assumes drvp points to an existing drive. |
1295 | */ |
1296 | void |
1297 | ata_probe_caps(struct ata_drive_datas *drvp) |
1298 | { |
1299 | struct ataparams params, params2; |
1300 | struct ata_channel *chp = drvp->chnl_softc; |
1301 | struct atac_softc *atac = chp->ch_atac; |
1302 | device_t drv_dev = drvp->drv_softc; |
1303 | int i, printed, s; |
1304 | const char *sep = "" ; |
1305 | int cf_flags; |
1306 | |
1307 | if (ata_get_params(drvp, AT_WAIT, ¶ms) != CMD_OK) { |
1308 | /* IDENTIFY failed. Can't tell more about the device */ |
1309 | return; |
1310 | } |
1311 | if ((atac->atac_cap & (ATAC_CAP_DATA16 | ATAC_CAP_DATA32)) == |
1312 | (ATAC_CAP_DATA16 | ATAC_CAP_DATA32)) { |
1313 | /* |
1314 | * Controller claims 16 and 32 bit transfers. |
1315 | * Re-do an IDENTIFY with 32-bit transfers, |
1316 | * and compare results. |
1317 | */ |
1318 | s = splbio(); |
1319 | drvp->drive_flags |= ATA_DRIVE_CAP32; |
1320 | splx(s); |
1321 | ata_get_params(drvp, AT_WAIT, ¶ms2); |
1322 | if (memcmp(¶ms, ¶ms2, sizeof(struct ataparams)) != 0) { |
1323 | /* Not good. fall back to 16bits */ |
1324 | s = splbio(); |
1325 | drvp->drive_flags &= ~ATA_DRIVE_CAP32; |
1326 | splx(s); |
1327 | } else { |
1328 | aprint_verbose_dev(drv_dev, "32-bit data port\n" ); |
1329 | } |
1330 | } |
1331 | #if 0 /* Some ultra-DMA drives claims to only support ATA-3. sigh */ |
1332 | if (params.atap_ata_major > 0x01 && |
1333 | params.atap_ata_major != 0xffff) { |
1334 | for (i = 14; i > 0; i--) { |
1335 | if (params.atap_ata_major & (1 << i)) { |
1336 | aprint_verbose_dev(drv_dev, |
1337 | "ATA version %d\n" , i); |
1338 | drvp->ata_vers = i; |
1339 | break; |
1340 | } |
1341 | } |
1342 | } |
1343 | #endif |
1344 | |
1345 | /* An ATAPI device is at last PIO mode 3 */ |
1346 | if (drvp->drive_type == ATA_DRIVET_ATAPI) |
1347 | drvp->PIO_mode = 3; |
1348 | |
1349 | /* |
1350 | * It's not in the specs, but it seems that some drive |
1351 | * returns 0xffff in atap_extensions when this field is invalid |
1352 | */ |
1353 | if (params.atap_extensions != 0xffff && |
1354 | (params.atap_extensions & WDC_EXT_MODES)) { |
1355 | printed = 0; |
1356 | /* |
1357 | * XXX some drives report something wrong here (they claim to |
1358 | * support PIO mode 8 !). As mode is coded on 3 bits in |
1359 | * SET FEATURE, limit it to 7 (so limit i to 4). |
1360 | * If higher mode than 7 is found, abort. |
1361 | */ |
1362 | for (i = 7; i >= 0; i--) { |
1363 | if ((params.atap_piomode_supp & (1 << i)) == 0) |
1364 | continue; |
1365 | if (i > 4) |
1366 | return; |
1367 | /* |
1368 | * See if mode is accepted. |
1369 | * If the controller can't set its PIO mode, |
1370 | * assume the defaults are good, so don't try |
1371 | * to set it |
1372 | */ |
1373 | if (atac->atac_set_modes) |
1374 | /* |
1375 | * It's OK to pool here, it's fast enough |
1376 | * to not bother waiting for interrupt |
1377 | */ |
1378 | if (ata_set_mode(drvp, 0x08 | (i + 3), |
1379 | AT_WAIT) != CMD_OK) |
1380 | continue; |
1381 | if (!printed) { |
1382 | aprint_verbose_dev(drv_dev, |
1383 | "drive supports PIO mode %d" , i + 3); |
1384 | sep = "," ; |
1385 | printed = 1; |
1386 | } |
1387 | /* |
1388 | * If controller's driver can't set its PIO mode, |
1389 | * get the highter one for the drive. |
1390 | */ |
1391 | if (atac->atac_set_modes == NULL || |
1392 | atac->atac_pio_cap >= i + 3) { |
1393 | drvp->PIO_mode = i + 3; |
1394 | drvp->PIO_cap = i + 3; |
1395 | break; |
1396 | } |
1397 | } |
1398 | if (!printed) { |
1399 | /* |
1400 | * We didn't find a valid PIO mode. |
1401 | * Assume the values returned for DMA are buggy too |
1402 | */ |
1403 | return; |
1404 | } |
1405 | s = splbio(); |
1406 | drvp->drive_flags |= ATA_DRIVE_MODE; |
1407 | splx(s); |
1408 | printed = 0; |
1409 | for (i = 7; i >= 0; i--) { |
1410 | if ((params.atap_dmamode_supp & (1 << i)) == 0) |
1411 | continue; |
1412 | #if NATA_DMA |
1413 | if ((atac->atac_cap & ATAC_CAP_DMA) && |
1414 | atac->atac_set_modes != NULL) |
1415 | if (ata_set_mode(drvp, 0x20 | i, AT_WAIT) |
1416 | != CMD_OK) |
1417 | continue; |
1418 | #endif |
1419 | if (!printed) { |
1420 | aprint_verbose("%s DMA mode %d" , sep, i); |
1421 | sep = "," ; |
1422 | printed = 1; |
1423 | } |
1424 | #if NATA_DMA |
1425 | if (atac->atac_cap & ATAC_CAP_DMA) { |
1426 | if (atac->atac_set_modes != NULL && |
1427 | atac->atac_dma_cap < i) |
1428 | continue; |
1429 | drvp->DMA_mode = i; |
1430 | drvp->DMA_cap = i; |
1431 | s = splbio(); |
1432 | drvp->drive_flags |= ATA_DRIVE_DMA; |
1433 | splx(s); |
1434 | } |
1435 | #endif |
1436 | break; |
1437 | } |
1438 | if (params.atap_extensions & WDC_EXT_UDMA_MODES) { |
1439 | printed = 0; |
1440 | for (i = 7; i >= 0; i--) { |
1441 | if ((params.atap_udmamode_supp & (1 << i)) |
1442 | == 0) |
1443 | continue; |
1444 | #if NATA_UDMA |
1445 | if (atac->atac_set_modes != NULL && |
1446 | (atac->atac_cap & ATAC_CAP_UDMA)) |
1447 | if (ata_set_mode(drvp, 0x40 | i, |
1448 | AT_WAIT) != CMD_OK) |
1449 | continue; |
1450 | #endif |
1451 | if (!printed) { |
1452 | aprint_verbose("%s Ultra-DMA mode %d" , |
1453 | sep, i); |
1454 | if (i == 2) |
1455 | aprint_verbose(" (Ultra/33)" ); |
1456 | else if (i == 4) |
1457 | aprint_verbose(" (Ultra/66)" ); |
1458 | else if (i == 5) |
1459 | aprint_verbose(" (Ultra/100)" ); |
1460 | else if (i == 6) |
1461 | aprint_verbose(" (Ultra/133)" ); |
1462 | sep = "," ; |
1463 | printed = 1; |
1464 | } |
1465 | #if NATA_UDMA |
1466 | if (atac->atac_cap & ATAC_CAP_UDMA) { |
1467 | if (atac->atac_set_modes != NULL && |
1468 | atac->atac_udma_cap < i) |
1469 | continue; |
1470 | drvp->UDMA_mode = i; |
1471 | drvp->UDMA_cap = i; |
1472 | s = splbio(); |
1473 | drvp->drive_flags |= ATA_DRIVE_UDMA; |
1474 | splx(s); |
1475 | } |
1476 | #endif |
1477 | break; |
1478 | } |
1479 | } |
1480 | aprint_verbose("\n" ); |
1481 | } |
1482 | |
1483 | s = splbio(); |
1484 | drvp->drive_flags &= ~ATA_DRIVE_NOSTREAM; |
1485 | if (drvp->drive_type == ATA_DRIVET_ATAPI) { |
1486 | if (atac->atac_cap & ATAC_CAP_ATAPI_NOSTREAM) |
1487 | drvp->drive_flags |= ATA_DRIVE_NOSTREAM; |
1488 | } else { |
1489 | if (atac->atac_cap & ATAC_CAP_ATA_NOSTREAM) |
1490 | drvp->drive_flags |= ATA_DRIVE_NOSTREAM; |
1491 | } |
1492 | splx(s); |
1493 | |
1494 | /* Try to guess ATA version here, if it didn't get reported */ |
1495 | if (drvp->ata_vers == 0) { |
1496 | #if NATA_UDMA |
1497 | if (drvp->drive_flags & ATA_DRIVE_UDMA) |
1498 | drvp->ata_vers = 4; /* should be at last ATA-4 */ |
1499 | else |
1500 | #endif |
1501 | if (drvp->PIO_cap > 2) |
1502 | drvp->ata_vers = 2; /* should be at last ATA-2 */ |
1503 | } |
1504 | cf_flags = device_cfdata(drv_dev)->cf_flags; |
1505 | if (cf_flags & ATA_CONFIG_PIO_SET) { |
1506 | s = splbio(); |
1507 | drvp->PIO_mode = |
1508 | (cf_flags & ATA_CONFIG_PIO_MODES) >> ATA_CONFIG_PIO_OFF; |
1509 | drvp->drive_flags |= ATA_DRIVE_MODE; |
1510 | splx(s); |
1511 | } |
1512 | #if NATA_DMA |
1513 | if ((atac->atac_cap & ATAC_CAP_DMA) == 0) { |
1514 | /* don't care about DMA modes */ |
1515 | return; |
1516 | } |
1517 | if (cf_flags & ATA_CONFIG_DMA_SET) { |
1518 | s = splbio(); |
1519 | if ((cf_flags & ATA_CONFIG_DMA_MODES) == |
1520 | ATA_CONFIG_DMA_DISABLE) { |
1521 | drvp->drive_flags &= ~ATA_DRIVE_DMA; |
1522 | } else { |
1523 | drvp->DMA_mode = (cf_flags & ATA_CONFIG_DMA_MODES) >> |
1524 | ATA_CONFIG_DMA_OFF; |
1525 | drvp->drive_flags |= ATA_DRIVE_DMA | ATA_DRIVE_MODE; |
1526 | } |
1527 | splx(s); |
1528 | } |
1529 | #if NATA_UDMA |
1530 | if ((atac->atac_cap & ATAC_CAP_UDMA) == 0) { |
1531 | /* don't care about UDMA modes */ |
1532 | return; |
1533 | } |
1534 | if (cf_flags & ATA_CONFIG_UDMA_SET) { |
1535 | s = splbio(); |
1536 | if ((cf_flags & ATA_CONFIG_UDMA_MODES) == |
1537 | ATA_CONFIG_UDMA_DISABLE) { |
1538 | drvp->drive_flags &= ~ATA_DRIVE_UDMA; |
1539 | } else { |
1540 | drvp->UDMA_mode = (cf_flags & ATA_CONFIG_UDMA_MODES) >> |
1541 | ATA_CONFIG_UDMA_OFF; |
1542 | drvp->drive_flags |= ATA_DRIVE_UDMA | ATA_DRIVE_MODE; |
1543 | } |
1544 | splx(s); |
1545 | } |
1546 | #endif /* NATA_UDMA */ |
1547 | #endif /* NATA_DMA */ |
1548 | } |
1549 | |
1550 | /* management of the /dev/atabus* devices */ |
1551 | int |
1552 | atabusopen(dev_t dev, int flag, int fmt, struct lwp *l) |
1553 | { |
1554 | struct atabus_softc *sc; |
1555 | int error; |
1556 | |
1557 | sc = device_lookup_private(&atabus_cd, minor(dev)); |
1558 | if (sc == NULL) |
1559 | return (ENXIO); |
1560 | |
1561 | if (sc->sc_flags & ATABUSCF_OPEN) |
1562 | return (EBUSY); |
1563 | |
1564 | if ((error = ata_addref(sc->sc_chan)) != 0) |
1565 | return (error); |
1566 | |
1567 | sc->sc_flags |= ATABUSCF_OPEN; |
1568 | |
1569 | return (0); |
1570 | } |
1571 | |
1572 | |
1573 | int |
1574 | atabusclose(dev_t dev, int flag, int fmt, struct lwp *l) |
1575 | { |
1576 | struct atabus_softc *sc = |
1577 | device_lookup_private(&atabus_cd, minor(dev)); |
1578 | |
1579 | ata_delref(sc->sc_chan); |
1580 | |
1581 | sc->sc_flags &= ~ATABUSCF_OPEN; |
1582 | |
1583 | return (0); |
1584 | } |
1585 | |
1586 | int |
1587 | atabusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) |
1588 | { |
1589 | struct atabus_softc *sc = |
1590 | device_lookup_private(&atabus_cd, minor(dev)); |
1591 | struct ata_channel *chp = sc->sc_chan; |
1592 | int min_drive, max_drive, drive; |
1593 | int error; |
1594 | int s; |
1595 | |
1596 | /* |
1597 | * Enforce write permission for ioctls that change the |
1598 | * state of the bus. Host adapter specific ioctls must |
1599 | * be checked by the adapter driver. |
1600 | */ |
1601 | switch (cmd) { |
1602 | case ATABUSIOSCAN: |
1603 | case ATABUSIODETACH: |
1604 | case ATABUSIORESET: |
1605 | if ((flag & FWRITE) == 0) |
1606 | return (EBADF); |
1607 | } |
1608 | |
1609 | switch (cmd) { |
1610 | case ATABUSIORESET: |
1611 | s = splbio(); |
1612 | ata_reset_channel(sc->sc_chan, AT_WAIT | AT_POLL); |
1613 | splx(s); |
1614 | return 0; |
1615 | case ATABUSIOSCAN: |
1616 | { |
1617 | #if 0 |
1618 | struct atabusioscan_args *a= |
1619 | (struct atabusioscan_args *)addr; |
1620 | #endif |
1621 | if ((chp->ch_drive[0].drive_type == ATA_DRIVET_OLD) || |
1622 | (chp->ch_drive[1].drive_type == ATA_DRIVET_OLD)) |
1623 | return (EOPNOTSUPP); |
1624 | return (EOPNOTSUPP); |
1625 | } |
1626 | case ATABUSIODETACH: |
1627 | { |
1628 | struct atabusiodetach_args *a= |
1629 | (struct atabusiodetach_args *)addr; |
1630 | if ((chp->ch_drive[0].drive_type == ATA_DRIVET_OLD) || |
1631 | (chp->ch_drive[1].drive_type == ATA_DRIVET_OLD)) |
1632 | return (EOPNOTSUPP); |
1633 | switch (a->at_dev) { |
1634 | case -1: |
1635 | min_drive = 0; |
1636 | max_drive = 1; |
1637 | break; |
1638 | case 0: |
1639 | case 1: |
1640 | min_drive = max_drive = a->at_dev; |
1641 | break; |
1642 | default: |
1643 | return (EINVAL); |
1644 | } |
1645 | for (drive = min_drive; drive <= max_drive; drive++) { |
1646 | if (chp->ch_drive[drive].drv_softc != NULL) { |
1647 | error = config_detach( |
1648 | chp->ch_drive[drive].drv_softc, 0); |
1649 | if (error) |
1650 | return (error); |
1651 | KASSERT(chp->ch_drive[drive].drv_softc == NULL); |
1652 | } |
1653 | } |
1654 | return 0; |
1655 | } |
1656 | default: |
1657 | return ENOTTY; |
1658 | } |
1659 | } |
1660 | |
1661 | static bool |
1662 | atabus_suspend(device_t dv, const pmf_qual_t *qual) |
1663 | { |
1664 | struct atabus_softc *sc = device_private(dv); |
1665 | struct ata_channel *chp = sc->sc_chan; |
1666 | |
1667 | ata_queue_idle(chp->ch_queue); |
1668 | |
1669 | return true; |
1670 | } |
1671 | |
1672 | static bool |
1673 | atabus_resume(device_t dv, const pmf_qual_t *qual) |
1674 | { |
1675 | struct atabus_softc *sc = device_private(dv); |
1676 | struct ata_channel *chp = sc->sc_chan; |
1677 | int s; |
1678 | |
1679 | /* |
1680 | * XXX joerg: with wdc, the first channel unfreezes the controler. |
1681 | * Move this the reset and queue idling into wdc. |
1682 | */ |
1683 | s = splbio(); |
1684 | if (chp->ch_queue->queue_freeze == 0) { |
1685 | splx(s); |
1686 | return true; |
1687 | } |
1688 | KASSERT(chp->ch_queue->queue_freeze > 0); |
1689 | /* unfreeze the queue and reset drives */ |
1690 | chp->ch_queue->queue_freeze--; |
1691 | |
1692 | /* reset channel only if there are drives attached */ |
1693 | if (chp->ch_ndrives > 0) |
1694 | ata_reset_channel(chp, AT_WAIT); |
1695 | splx(s); |
1696 | |
1697 | return true; |
1698 | } |
1699 | |
1700 | static int |
1701 | atabus_rescan(device_t self, const char *ifattr, const int *locators) |
1702 | { |
1703 | struct atabus_softc *sc = device_private(self); |
1704 | struct ata_channel *chp = sc->sc_chan; |
1705 | struct atabus_initq *initq; |
1706 | int i; |
1707 | |
1708 | /* |
1709 | * we can rescan a port multiplier atabus, even if some devices are |
1710 | * still attached |
1711 | */ |
1712 | if (chp->ch_satapmp_nports == 0) { |
1713 | if (chp->atapibus != NULL) { |
1714 | return EBUSY; |
1715 | } |
1716 | |
1717 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
1718 | for (i = 0; i < chp->ch_ndrives; i++) { |
1719 | if (chp->ch_drive[i].drv_softc != NULL) { |
1720 | return EBUSY; |
1721 | } |
1722 | } |
1723 | } |
1724 | |
1725 | initq = malloc(sizeof(*initq), M_DEVBUF, M_WAITOK); |
1726 | initq->atabus_sc = sc; |
1727 | TAILQ_INSERT_TAIL(&atabus_initq_head, initq, atabus_initq); |
1728 | config_pending_incr(sc->sc_dev); |
1729 | |
1730 | chp->ch_flags |= ATACH_TH_RESCAN; |
1731 | wakeup(&chp->ch_thread); |
1732 | |
1733 | return 0; |
1734 | } |
1735 | |
1736 | void |
1737 | ata_delay(int ms, const char *msg, int flags) |
1738 | { |
1739 | if ((flags & (AT_WAIT | AT_POLL)) == AT_POLL) { |
1740 | /* |
1741 | * can't use tsleep(), we may be in interrupt context |
1742 | * or taking a crash dump |
1743 | */ |
1744 | delay(ms * 1000); |
1745 | } else { |
1746 | kpause(msg, false, mstohz(ms), NULL); |
1747 | } |
1748 | } |
1749 | |