SILI - Minor fixes and adjustments.
[dragonfly.git] / sys / dev / disk / sili / sili_pm.c
CommitLineData
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1/*
2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include "sili.h"
36
37static void sili_pm_dummy_done(struct ata_xfer *xa);
38static void sili_pm_empty_done(struct sili_ccb *ccb);
39
40/*
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41 * This is called for PM attachments and hot-plug insertion events, and
42 * typically not called again until after an unplug/replug sequence.
43 *
44 * We just fall through to the hard-reset code, we don't need to
45 * set up any initial conditions.
46 */
47int
48sili_pm_port_init(struct sili_port *ap, struct ata_port *at)
49{
50 at->at_probe = ATA_PROBE_NEED_HARD_RESET;
51 return (0);
52}
53
54/*
55 * This is called from the port hardreset code.
56 */
57int
58sili_pm_port_probe(struct sili_port *ap, int orig_error)
59{
60 struct ata_port *at;
61 int error;
62 int i;
63
64 /*
65 * Clean up the port state machine
66 */
67 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_PMA);
68 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT);
69 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) {
70 kprintf("%s: PM probe: unable to init port\n",
71 PORTNAME(ap));
72 return (EBUSY);
73 }
74 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
75 kprintf("%s: PM probe: port will not come ready\n",
76 PORTNAME(ap));
77 return (EBUSY);
78 }
79
80 /*
81 * Issue a soft-reset of target 15
82 */
83 ap->ap_state = AP_S_NORMAL;
84 sili_pwrite(ap, SILI_PREG_SERR, -1);
85 error = sili_pm_softreset(ap, 15);
86
87 if (error == 0)
88 error = sili_pm_identify(ap);
89
90 /*
91 * Finalize. If the softreset failed. Re-init the port
92 * state machine again so the normal non-PM softreset does
93 * not bog down.
94 */
95 if (error == 0) {
96 for (i = 0; i < SILI_MAX_PMPORTS; ++i) {
97 at = &ap->ap_ata[i];
98 at->at_probe = ATA_PROBE_NEED_INIT;
99 at->at_features |= ATA_PORT_F_RESCAN;
100 at->at_features &= ~ATA_PORT_F_READLOG;
101 }
102 ap->ap_type = ATA_PORT_T_PM;
103 return (0);
104 }
105
106 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
107 sili_port_init(ap);
108 if (orig_error == 0) {
109 if (sili_pwait_set_to(ap, 5000, SILI_PREG_STATUS,
110 SILI_PREG_STATUS_READY)) {
111 kprintf("%s: PM probe: port will not come ready\n",
112 PORTNAME(ap));
113 orig_error = EBUSY;
114 }
115 }
116 return (orig_error);
117
118#if 0
119 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESUME);
120 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
121 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT);
122 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) {
123 kprintf("%s: PM probe: unable to init port\n",
124 PORTNAME(ap));
125 orig_error = EBUSY;
126 }
127 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
128 kprintf("%s: PM probe: port will not come ready\n",
129 PORTNAME(ap));
130 orig_error = EBUSY;
131 }
132 kprintf("ORIG ERROR %d\n", orig_error);
133 if (orig_error)
134 return (orig_error);
135
136 /*
137 * If we originally detected a device redo the device reset to
138 * try to clear the mess.
139 */
140 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET);
141 if (sili_pwait_clr(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET)) {
142 kprintf("%s: PM probe: unable to reset\n", PORTNAME(ap));
143 orig_error = EBUSY;
144 }
145 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
146 kprintf("%s: PM probe: port will not come ready\n",
147 PORTNAME(ap));
148 orig_error = EBUSY;
149 }
150 return (orig_error);
151#endif
152}
153
154/*
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155 * Identify the port multiplier
156 */
157int
158sili_pm_identify(struct sili_port *ap)
159{
160 u_int32_t chipid;
161 u_int32_t rev;
162 u_int32_t nports;
163 u_int32_t data1;
164 u_int32_t data2;
165
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166 ap->ap_probe = ATA_PROBE_FAILED;
167 if (sili_pm_read(ap, 15, 0, &chipid))
168 goto err;
169 if (sili_pm_read(ap, 15, 1, &rev))
170 goto err;
171 if (sili_pm_read(ap, 15, 2, &nports))
172 goto err;
173 nports &= 0x0000000F; /* only the low 4 bits */
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174 ap->ap_probe = ATA_PROBE_GOOD;
175 kprintf("%s: Port multiplier: chip=%08x rev=0x%b nports=%d\n",
176 PORTNAME(ap),
177 chipid,
178 rev, SATA_PFMT_PM_REV,
179 nports);
180 ap->ap_pmcount = nports;
181
182 if (sili_pm_read(ap, 15, SATA_PMREG_FEA, &data1)) {
183 kprintf("%s: Port multiplier: Warning, "
184 "cannot read feature register\n", PORTNAME(ap));
185 } else {
186 kprintf("%s: Port multiplier features: 0x%b\n",
187 PORTNAME(ap),
188 data1,
189 SATA_PFMT_PM_FEA);
190 }
191 if (sili_pm_read(ap, 15, SATA_PMREG_FEAEN, &data2) == 0) {
192 kprintf("%s: Port multiplier defaults: 0x%b\n",
193 PORTNAME(ap),
194 data2,
195 SATA_PFMT_PM_FEA);
196 }
197
198 /*
199 * Turn on async notification if we support and the PM supports it.
200 * This allows the PM to forward async notification events to us and
201 * it will also generate an event for target 15 for hot-plug events
202 * (or is supposed to anyway).
203 */
204 if ((ap->ap_sc->sc_flags & SILI_F_SSNTF) &&
205 (data1 & SATA_PMFEA_ASYNCNOTIFY)) {
206 u_int32_t serr_bits = SATA_PM_SERR_DIAG_N |
207 SATA_PM_SERR_DIAG_X;
208 data2 |= SATA_PMFEA_ASYNCNOTIFY;
209 if (sili_pm_write(ap, 15, SATA_PMREG_FEAEN, data2)) {
210 kprintf("%s: Port multiplier: AsyncNotify cannot be "
211 "enabled\n", PORTNAME(ap));
212 } else if (sili_pm_write(ap, 15, SATA_PMREG_EEENA, serr_bits)) {
213 kprintf("%s: Port mulltiplier: AsyncNotify unable "
214 "to enable error info bits\n", PORTNAME(ap));
215 } else {
216 kprintf("%s: Port multiplier: AsyncNotify enabled\n",
217 PORTNAME(ap));
218 }
219 }
220
221 return (0);
222err:
223 kprintf("%s: Port multiplier cannot be identified\n", PORTNAME(ap));
224 return (EIO);
225}
226
227/*
228 * Do a COMRESET sequence on the target behind a port multiplier.
229 *
230 * If hard is 2 we also cycle the phy on the target.
231 *
232 * This must be done prior to any softreset or probe attempts on
233 * targets behind the port multiplier.
234 *
235 * Returns 0 on success or an error.
236 */
237int
238sili_pm_hardreset(struct sili_port *ap, int target, int hard)
239{
240 struct ata_port *at;
241 u_int32_t data;
242 int loop;
243 int error = EIO;
244
245 at = &ap->ap_ata[target];
246
247 /*
248 * Turn off power management and kill the phy on the target
249 * if requested. Hold state for 10ms.
250 */
251 data = SATA_PM_SCTL_IPM_DISABLED;
252 if (hard == 2)
253 data |= SATA_PM_SCTL_DET_DISABLE;
254 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1))
255 goto err;
256 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
257 goto err;
258 sili_os_sleep(10);
259
260 /*
261 * Start transmitting COMRESET. COMRESET must be sent for at
262 * least 1ms.
263 */
264 at->at_probe = ATA_PROBE_FAILED;
265 at->at_type = ATA_PORT_T_NONE;
266 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_INIT;
267 if (SiliForceGen1 & (1 << ap->ap_num)) {
268 kprintf("%s.%d: Force 1.5GBits\n", PORTNAME(ap), target);
269 data |= SATA_PM_SCTL_SPD_GEN1;
270 } else {
271 data |= SATA_PM_SCTL_SPD_ANY;
272 }
273 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
274 goto err;
275
276 /*
277 * It takes about 100ms for the DET logic to settle down,
278 * from trial and error testing. If this is too short
279 * the softreset code will fail.
280 */
281 sili_os_sleep(100);
282
283 if (sili_pm_phy_status(ap, target, &data)) {
284 kprintf("%s: (A)Cannot clear phy status\n",
285 ATANAME(ap ,at));
286 }
287
288 /*
289 * Flush any status, then clear DET to initiate negotiation.
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290 *
291 * We need to give the phy layer a bit of time to settle down
292 * or we may catch a detection glitch instead of the actual
293 * device detect.
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294 */
295 sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
296 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_NONE;
297 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
298 goto err;
3c6bae9d 299 sili_os_sleep(10);
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300
301 /*
302 * Try to determine if there is a device on the port.
303 *
304 * Give the device 3/10 second to at least be detected.
305 * If we fail clear any pending status since we may have
306 * cycled the phy and probably caused another PRCS interrupt.
307 */
308 for (loop = 3; loop; --loop) {
309 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data))
310 goto err;
311 if (data & SATA_PM_SSTS_DET)
312 break;
313 sili_os_sleep(100);
314 }
315 if (loop == 0) {
316 kprintf("%s.%d: Port appears to be unplugged\n",
317 PORTNAME(ap), target);
318 error = ENODEV;
319 goto err;
320 }
321
322 /*
323 * There is something on the port. Give the device 3 seconds
324 * to fully negotiate.
325 */
326 for (loop = 30; loop; --loop) {
327 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data))
328 goto err;
329 if ((data & SATA_PM_SSTS_DET) == SATA_PM_SSTS_DET_DEV)
330 break;
331 sili_os_sleep(100);
332 }
333
334 /*
335 * Device not detected
336 */
337 if (loop == 0) {
338 kprintf("%s: Device may be powered down\n",
339 PORTNAME(ap));
340 error = ENODEV;
341 goto err;
342 }
343
344 /*
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345 * Device detected.
346 *
347 * Wait 200ms to give the device time to send its first D2H FIS.
348 * If we do not wait long enough our softreset sequence can collide
349 * with the end of the device's reset sequence.
350 *
351 * XXX how do we poll that particular target's BSY status via the
352 * PM?
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MD
353 */
354 kprintf("%s.%d: Device detected data=%08x\n",
355 PORTNAME(ap), target, data);
3c6bae9d 356 sili_os_sleep(200);
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MD
357
358 error = 0;
359err:
360 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_SOFT_RESET;
361 return (error);
362}
363
364/*
365 * SILI soft reset through port multiplier.
366 *
367 * This function keeps port communications intact and attempts to generate
368 * a reset to the connected device using device commands. Unlike
369 * hard-port operations we can't do fancy stop/starts or stuff like
370 * that without messing up other commands that might be running or
371 * queued.
372 *
373 * The SII chip will do the whole mess for us.
374 */
375int
376sili_pm_softreset(struct sili_port *ap, int target)
377{
378 struct ata_port *at;
379 struct sili_ccb *ccb;
380 struct sili_prb *prb;
381 int error;
382 u_int32_t data;
383 u_int32_t sig;
a35ddbb4 384 int timeout;
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385
386 error = EIO;
387 at = &ap->ap_ata[target];
388
389 DPRINTF(SILI_D_VERBOSE, "%s: soft reset\n", PORTNAME(ap));
390
391 /*
392 * Prep the special soft-reset SII command.
393 */
394 ccb = sili_get_err_ccb(ap);
395 ccb->ccb_done = sili_pm_empty_done;
4383d440 396 ccb->ccb_xa.flags = ATA_F_POLL | ATA_F_EXCLUSIVE | ATA_F_AUTOSENSE;
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397 ccb->ccb_xa.complete = sili_pm_dummy_done;
398 ccb->ccb_xa.at = at;
399
400 prb = ccb->ccb_prb;
401 bzero(&prb->prb_h2d, sizeof(prb->prb_h2d));
402 prb->prb_h2d.flags = at->at_target;
403 prb->prb_control = SILI_PRB_CTRL_SOFTRESET;
404 prb->prb_override = 0;
405 prb->prb_xfer_count = 0;
406
407 ccb->ccb_xa.state = ATA_S_PENDING;
1ac8d5ba 408
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MD
409 timeout = (target == 15) ? 1000 : 8000;
410
411 /*
412 * NOTE: Must use sili_quick_timeout() because we hold the err_ccb
413 */
414 if (sili_poll(ccb, timeout, sili_quick_timeout) != ATA_S_COMPLETE) {
415 if (target != 15) {
416 kprintf("%s: (PM) Softreset FIS failed\n",
417 ATANAME(ap, at));
418 }
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MD
419 sili_put_err_ccb(ccb);
420 goto err;
421 }
422
423 sig = (prb->prb_d2h.lba_high << 24) |
424 (prb->prb_d2h.lba_mid << 16) |
425 (prb->prb_d2h.lba_low << 8) |
426 (prb->prb_d2h.sector_count);
427 kprintf("%s: PM SOFTRESET SIGNATURE %08x\n", ATANAME(ap, at), sig);
428
429 sili_put_err_ccb(ccb);
430
431 /*
432 * Clear the phy status of the target so we can get a new event.
433 *
434 * Target 15 is the PM itself and these registers have
435 * different meanings.
436 */
437 if (target != 15) {
438 if (sili_pm_phy_status(ap, target, &data)) {
439 kprintf("%s: (C)Cannot clear phy status\n",
440 ATANAME(ap ,at));
441 }
442 sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
443 }
444
445 /*
446 * If the softreset is trying to clear a BSY condition after a
447 * normal portreset we assign the port type.
448 *
449 * If the softreset is being run first as part of the ccb error
450 * processing code then report if the device signature changed
451 * unexpectedly.
452 */
453 if (at->at_type == ATA_PORT_T_NONE) {
454 at->at_type = sili_port_signature(ap, at, sig);
455 } else {
456 if (sili_port_signature(ap, at, sig) != at->at_type) {
457 kprintf("%s: device signature unexpectedly "
458 "changed\n", ATANAME(ap, at));
459 error = EBUSY; /* XXX */
460 }
461 }
462 error = 0;
463err:
464 /*
465 * Clear error status so we can detect removal.
466 *
467 * Target 15 is the PM itself and these registers have
468 * different meanings.
469 */
470 if (error == 0 && target != 15) {
471 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) {
472 kprintf("%s: sili_pm_softreset unable to clear SERR\n",
473 ATANAME(ap, at));
474 ap->ap_flags &= ~AP_F_IGNORE_IFS;
475 }
476 }
477
478 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_IDENT;
479 return (error);
480}
481
482
483/*
484 * Return the phy status for a target behind a port multiplier and
485 * reset SATA_PMREG_SERR.
486 *
487 * Returned bits follow SILI_PREG_SSTS bits. The SILI_PREG_SSTS_SPD
488 * bits can be used to determine the link speed and will be 0 if there
489 * is no link.
490 *
491 * 0 is returned if any communications error occurs.
492 */
493int
494sili_pm_phy_status(struct sili_port *ap, int target, u_int32_t *datap)
495{
496 int error;
497
498 error = sili_pm_read(ap, target, SATA_PMREG_SSTS, datap);
499 if (error == 0)
500 error = sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
501 if (error)
502 *datap = 0;
503 return(error);
504}
505
506int
507sili_pm_set_feature(struct sili_port *ap, int feature, int enable)
508{
509 struct ata_xfer *xa;
510 int error;
511
512 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]);
513
514 xa->fis->type = ATA_FIS_TYPE_H2D;
515 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15;
516 xa->fis->command = enable ? ATA_C_SATA_FEATURE_ENA :
517 ATA_C_SATA_FEATURE_DIS;
518 xa->fis->sector_count = feature;
519 xa->fis->control = ATA_FIS_CONTROL_4BIT;
520
521 xa->complete = sili_pm_dummy_done;
522 xa->datalen = 0;
4383d440 523 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE;
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524 xa->timeout = 1000;
525
526 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
527 error = 0;
528 else
529 error = EIO;
530 sili_ata_put_xfer(xa);
531 return(error);
532}
533
534/*
535 * Check that a target is still good.
536 */
537void
538sili_pm_check_good(struct sili_port *ap, int target)
539{
540 struct ata_port *at;
541 u_int32_t data;
542
543 /*
544 * It looks like we might have to read the EINFO register
545 * to allow the PM to generate a new event.
546 */
547 if (sili_pm_read(ap, 15, SATA_PMREG_EINFO, &data)) {
548 kprintf("%s: Port multiplier EINFO could not be read\n",
549 PORTNAME(ap));
550 }
551
552 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) {
553 kprintf("%s: Port multiplier: SERR could not be cleared\n",
554 PORTNAME(ap));
555 }
556
557 if (target == CAM_TARGET_WILDCARD || target >= ap->ap_pmcount)
558 return;
559 at = &ap->ap_ata[target];
560
561 /*
562 * If the device needs an init or hard reset also make sure the
563 * PHY is turned on.
564 */
565 if (at->at_probe <= ATA_PROBE_NEED_HARD_RESET) {
566 /*kprintf("%s DOHARD\n", ATANAME(ap, at));*/
567 sili_pm_hardreset(ap, target, 1);
568 }
569
570 /*
571 * Read the detect status
572 */
573 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data)) {
574 kprintf("%s: Unable to access PM SSTS register target %d\n",
575 PORTNAME(ap), target);
576 return;
577 }
578 if ((data & SATA_PM_SSTS_DET) != SATA_PM_SSTS_DET_DEV) {
579 /*kprintf("%s: DETECT %08x\n", ATANAME(ap, at), data);*/
580 if (at->at_probe != ATA_PROBE_FAILED) {
581 at->at_probe = ATA_PROBE_FAILED;
582 at->at_type = ATA_PORT_T_NONE;
583 at->at_features |= ATA_PORT_F_RESCAN;
584 kprintf("%s: HOTPLUG (PM) - Device removed\n",
585 ATANAME(ap, at));
586 }
587 } else {
588 if (at->at_probe == ATA_PROBE_FAILED) {
589 at->at_probe = ATA_PROBE_NEED_HARD_RESET;
590 at->at_features |= ATA_PORT_F_RESCAN;
591 kprintf("%s: HOTPLUG (PM) - Device inserted\n",
592 ATANAME(ap, at));
593 }
594 }
595}
596
597/*
598 * Read a PM register
599 */
600int
601sili_pm_read(struct sili_port *ap, int target, int which, u_int32_t *datap)
602{
603 struct ata_xfer *xa;
604 int error;
605
606 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]);
607
608 xa->fis->type = ATA_FIS_TYPE_H2D;
609 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15;
610 xa->fis->command = ATA_C_READ_PM;
611 xa->fis->features = which;
612 xa->fis->device = target | ATA_H2D_DEVICE_LBA;
613 xa->fis->control = ATA_FIS_CONTROL_4BIT;
614
615 xa->complete = sili_pm_dummy_done;
616 xa->datalen = 0;
4383d440 617 xa->flags = ATA_F_POLL | ATA_F_AUTOSENSE;
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618 xa->timeout = 1000;
619
620 if (sili_ata_cmd(xa) == ATA_S_COMPLETE) {
621 *datap = xa->rfis->sector_count | (xa->rfis->lba_low << 8) |
622 (xa->rfis->lba_mid << 16) | (xa->rfis->lba_high << 24);
623 error = 0;
624 } else {
625 kprintf("%s.%d pm_read SCA[%d] failed\n",
626 PORTNAME(ap), target, which);
627 *datap = 0;
628 error = EIO;
629 }
630 sili_ata_put_xfer(xa);
631 return (error);
632}
633
634/*
635 * Write a PM register
636 */
637int
638sili_pm_write(struct sili_port *ap, int target, int which, u_int32_t data)
639{
640 struct ata_xfer *xa;
641 int error;
642
643 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]);
644
645 xa->fis->type = ATA_FIS_TYPE_H2D;
646 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15;
647 xa->fis->command = ATA_C_WRITE_PM;
648 xa->fis->features = which;
649 xa->fis->device = target | ATA_H2D_DEVICE_LBA;
650 xa->fis->sector_count = (u_int8_t)data;
651 xa->fis->lba_low = (u_int8_t)(data >> 8);
652 xa->fis->lba_mid = (u_int8_t)(data >> 16);
653 xa->fis->lba_high = (u_int8_t)(data >> 24);
654 xa->fis->control = ATA_FIS_CONTROL_4BIT;
655
656 xa->complete = sili_pm_dummy_done;
657 xa->datalen = 0;
4383d440 658 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE;
1ac8d5ba
MD
659 xa->timeout = 1000;
660
661 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
662 error = 0;
663 else
664 error = EIO;
665 sili_ata_put_xfer(xa);
666 return(error);
667}
668
669/*
670 * Dummy done callback for xa.
671 */
672static void
673sili_pm_dummy_done(struct ata_xfer *xa)
674{
675}
676
677static void
678sili_pm_empty_done(struct sili_ccb *ccb)
679{
680}