1 /*
2 * (MPSAFE)
3 *
4 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
5 *
6 * This code is derived from software contributed to The DragonFly Project
7 * by Matthew Dillon <dillon@backplane.com>
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 * 3. Neither the name of The DragonFly Project nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific, prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #include "sili.h"
38
39 static void sili_pm_dummy_done(struct ata_xfer *xa);
40 static void sili_pm_empty_done(struct sili_ccb *ccb);
41
42 /*
43 * This is called for PM attachments and hot-plug insertion events, and
44 * typically not called again until after an unplug/replug sequence.
45 *
46 * We just fall through to the hard-reset code, we don't need to
47 * set up any initial conditions.
48 */
49 int
sili_pm_port_init(struct sili_port * ap,struct ata_port * at)50 sili_pm_port_init(struct sili_port *ap, struct ata_port *at)
51 {
52 at->at_probe = ATA_PROBE_NEED_HARD_RESET;
53 return (0);
54 }
55
56 /*
57 * This is called from the port hardreset code.
58 */
59 int
sili_pm_port_probe(struct sili_port * ap,int orig_error)60 sili_pm_port_probe(struct sili_port *ap, int orig_error)
61 {
62 struct ata_port *at;
63 int error;
64 int i;
65
66 /*
67 * Clean up the port state machine
68 */
69 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_PMA);
70 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT);
71 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) {
72 kprintf("%s: PM probe: unable to init port\n",
73 PORTNAME(ap));
74 return (EBUSY);
75 }
76 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
77 kprintf("%s: PM probe: port will not come ready\n",
78 PORTNAME(ap));
79 return (EBUSY);
80 }
81
82 /*
83 * Issue a soft-reset of target 15
84 */
85 ap->ap_state = AP_S_NORMAL;
86 sili_pwrite(ap, SILI_PREG_SERR, -1);
87 error = sili_pm_softreset(ap, 15);
88
89 if (error == 0)
90 error = sili_pm_identify(ap);
91
92 /*
93 * Finalize. If the softreset failed. Re-init the port
94 * state machine again so the normal non-PM softreset does
95 * not bog down.
96 */
97 if (error == 0) {
98 for (i = 0; i < SILI_MAX_PMPORTS; ++i) {
99 at = &ap->ap_ata[i];
100 at->at_probe = ATA_PROBE_NEED_INIT;
101 at->at_features |= ATA_PORT_F_RESCAN;
102 at->at_features &= ~ATA_PORT_F_READLOG;
103 }
104 ap->ap_type = ATA_PORT_T_PM;
105 return (0);
106 }
107
108 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
109 sili_port_init(ap);
110 if (orig_error == 0) {
111 if (sili_pwait_set_to(ap, 5000, SILI_PREG_STATUS,
112 SILI_PREG_STATUS_READY)) {
113 kprintf("%s: PM probe: port will not come ready\n",
114 PORTNAME(ap));
115 orig_error = EBUSY;
116 }
117 }
118 return (orig_error);
119
120 #if 0
121 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_RESUME);
122 sili_pwrite(ap, SILI_PREG_CTL_CLR, SILI_PREG_CTL_PMA);
123 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_INIT);
124 if (sili_pwait_clr_to(ap, 5000, SILI_PREG_STATUS, SILI_PREG_CTL_INIT)) {
125 kprintf("%s: PM probe: unable to init port\n",
126 PORTNAME(ap));
127 orig_error = EBUSY;
128 }
129 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
130 kprintf("%s: PM probe: port will not come ready\n",
131 PORTNAME(ap));
132 orig_error = EBUSY;
133 }
134 kprintf("ORIG ERROR %d\n", orig_error);
135 if (orig_error)
136 return (orig_error);
137
138 /*
139 * If we originally detected a device redo the device reset to
140 * try to clear the mess.
141 */
142 sili_pwrite(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET);
143 if (sili_pwait_clr(ap, SILI_PREG_CTL_SET, SILI_PREG_CTL_DEVRESET)) {
144 kprintf("%s: PM probe: unable to reset\n", PORTNAME(ap));
145 orig_error = EBUSY;
146 }
147 if (sili_pwait_set(ap, SILI_PREG_STATUS, SILI_PREG_STATUS_READY)) {
148 kprintf("%s: PM probe: port will not come ready\n",
149 PORTNAME(ap));
150 orig_error = EBUSY;
151 }
152 return (orig_error);
153 #endif
154 }
155
156 /*
157 * Identify the port multiplier
158 */
159 int
sili_pm_identify(struct sili_port * ap)160 sili_pm_identify(struct sili_port *ap)
161 {
162 u_int32_t chipid;
163 u_int32_t rev;
164 u_int32_t nports;
165 u_int32_t data1;
166 u_int32_t data2;
167 int has_dummy_port;
168
169 ap->ap_probe = ATA_PROBE_FAILED;
170 if (sili_pm_read(ap, 15, 0, &chipid))
171 goto err;
172 if (sili_pm_read(ap, 15, 1, &rev))
173 goto err;
174 if (sili_pm_read(ap, 15, 2, &nports))
175 goto err;
176 nports &= 0x0000000F; /* only the low 4 bits */
177 ap->ap_probe = ATA_PROBE_GOOD;
178
179 /*
180 * Ignore fake port on PMs which have it. We can probe it but the
181 * softreset will probably fail.
182 */
183 switch(chipid) {
184 case 0x37261095:
185 has_dummy_port = 1;
186 break;
187 default:
188 has_dummy_port = 0;
189 break;
190 }
191 if (has_dummy_port) {
192 if (nports > 1)
193 --nports;
194 }
195
196 kprintf("%s: Port multiplier: chip=%08x rev=0x%pb%i nports=%d\n",
197 PORTNAME(ap),
198 chipid,
199 SATA_PFMT_PM_REV, rev,
200 nports);
201 if (has_dummy_port) {
202 kprintf("%s: Port multiplier: Ignoring dummy port #%d\n",
203 PORTNAME(ap), nports);
204 }
205 ap->ap_pmcount = nports;
206
207 if (sili_pm_read(ap, 15, SATA_PMREG_FEA, &data1)) {
208 kprintf("%s: Port multiplier: Warning, "
209 "cannot read feature register\n", PORTNAME(ap));
210 } else {
211 kprintf("%s: Port multiplier features: 0x%pb%i\n",
212 PORTNAME(ap), SATA_PFMT_PM_FEA, data1);
213 }
214 if (sili_pm_read(ap, 15, SATA_PMREG_FEAEN, &data2) == 0) {
215 kprintf("%s: Port multiplier defaults: 0x%pb%i\n",
216 PORTNAME(ap), SATA_PFMT_PM_FEA, data2);
217 }
218
219 /*
220 * Turn on async notification if we support and the PM supports it.
221 * This allows the PM to forward async notification events to us and
222 * it will also generate an event for target 15 for hot-plug events
223 * (or is supposed to anyway).
224 */
225 if ((ap->ap_sc->sc_flags & SILI_F_SSNTF) &&
226 (data1 & SATA_PMFEA_ASYNCNOTIFY)) {
227 u_int32_t serr_bits = SATA_PM_SERR_DIAG_N |
228 SATA_PM_SERR_DIAG_X;
229 data2 |= SATA_PMFEA_ASYNCNOTIFY;
230 if (sili_pm_write(ap, 15, SATA_PMREG_FEAEN, data2)) {
231 kprintf("%s: Port multiplier: AsyncNotify cannot be "
232 "enabled\n", PORTNAME(ap));
233 } else if (sili_pm_write(ap, 15, SATA_PMREG_EEENA, serr_bits)) {
234 kprintf("%s: Port mulltiplier: AsyncNotify unable "
235 "to enable error info bits\n", PORTNAME(ap));
236 } else {
237 kprintf("%s: Port multiplier: AsyncNotify enabled\n",
238 PORTNAME(ap));
239 }
240 }
241
242 return (0);
243 err:
244 kprintf("%s: Port multiplier cannot be identified\n", PORTNAME(ap));
245 return (EIO);
246 }
247
248 /*
249 * Do a COMRESET sequence on the target behind a port multiplier.
250 *
251 * If hard is 2 we also cycle the phy on the target.
252 *
253 * This must be done prior to any softreset or probe attempts on
254 * targets behind the port multiplier.
255 *
256 * Returns 0 on success or an error.
257 */
258 int
sili_pm_hardreset(struct sili_port * ap,int target,int hard)259 sili_pm_hardreset(struct sili_port *ap, int target, int hard)
260 {
261 struct ata_port *at;
262 u_int32_t data;
263 int loop;
264 int error = EIO;
265
266 at = &ap->ap_ata[target];
267
268 /*
269 * Ensure that no other commands are pending. Our HW reset of
270 * the PM target can skewer the port overall!
271 */
272 sili_exclusive_access(ap);
273
274 /*
275 * Turn off power management and kill the phy on the target
276 * if requested. Hold state for 10ms.
277 */
278 data = SATA_PM_SCTL_IPM_DISABLED;
279 #if 0
280 if (hard == 2)
281 data |= SATA_PM_SCTL_DET_DISABLE;
282 #endif
283 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1))
284 goto err;
285 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
286 goto err;
287 sili_os_sleep(10);
288
289 /*
290 * Start transmitting COMRESET. COMRESET must be sent for at
291 * least 1ms.
292 *
293 * It takes about 100ms for the DET logic to settle down,
294 * from trial and error testing. If this is too short
295 * the softreset code will fail.
296 *
297 * It is very important to allow the logic to settle before
298 * we issue any additional commands or the target will interfere
299 * with our PM commands.
300 */
301 at->at_probe = ATA_PROBE_FAILED;
302 at->at_type = ATA_PORT_T_NONE;
303 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_INIT;
304 if (SiliForceGen1 & (1 << ap->ap_num)) {
305 kprintf("%s.%d: Force 1.5GBits\n", PORTNAME(ap), target);
306 data |= SATA_PM_SCTL_SPD_GEN1;
307 } else {
308 data |= SATA_PM_SCTL_SPD_ANY;
309 }
310 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
311 goto err;
312 sili_os_sleep(100);
313
314 if (sili_pm_phy_status(ap, target, &data)) {
315 kprintf("%s: (A)Cannot clear phy status\n",
316 ATANAME(ap ,at));
317 }
318
319 /*
320 * Flush any status, then clear DET to initiate negotiation.
321 *
322 * It is very important to allow the negotiation to settle before
323 * we issue any additional commands or the target will interfere
324 * with our PM commands.
325 */
326 sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
327 data = SATA_PM_SCTL_IPM_DISABLED | SATA_PM_SCTL_DET_NONE;
328 if (sili_pm_write(ap, target, SATA_PMREG_SCTL, data))
329 goto err;
330 sili_os_sleep(100);
331
332 /*
333 * Try to determine if there is a device on the port.
334 *
335 * Give the device 3/10 second to at least be detected.
336 * If we fail clear any pending status since we may have
337 * cycled the phy and probably caused another PRCS interrupt.
338 */
339 for (loop = 3; loop; --loop) {
340 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data))
341 goto err;
342 if (data & SATA_PM_SSTS_DET)
343 break;
344 sili_os_sleep(100);
345 }
346 if (loop == 0) {
347 kprintf("%s.%d: Port appears to be unplugged\n",
348 PORTNAME(ap), target);
349 error = ENODEV;
350 goto err;
351 }
352
353 /*
354 * There is something on the port. Give the device 3 seconds
355 * to fully negotiate.
356 */
357 for (loop = 30; loop; --loop) {
358 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data))
359 goto err;
360 if ((data & SATA_PM_SSTS_DET) == SATA_PM_SSTS_DET_DEV)
361 break;
362 sili_os_sleep(100);
363 }
364
365 /*
366 * Device not detected
367 */
368 if (loop == 0) {
369 kprintf("%s: Device may be powered down\n",
370 PORTNAME(ap));
371 error = ENODEV;
372 goto err;
373 }
374
375 /*
376 * Device detected.
377 *
378 * Wait 200ms to give the device time to send its first D2H FIS.
379 * If we do not wait long enough our softreset sequence can collide
380 * with the end of the device's reset sequence and brick the port.
381 * Some devices may need longer and we handle those cases in the
382 * pm softreset code.
383 *
384 * XXX Looks like we have to wait a lot longer. If the Sili chip's
385 * softreset fails due to a collision with the D2H FIS or the
386 * unbusying it bricks the port.
387 *
388 * XXX how do we poll that particular target's BSY status via the
389 * PM?
390 */
391 kprintf("%s.%d: PM Device detected ssts=%08x\n",
392 PORTNAME(ap), target, data);
393 sili_os_sleep(5000);
394
395 error = 0;
396 err:
397 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_SOFT_RESET;
398 return (error);
399 }
400
401 /*
402 * SILI soft reset through port multiplier.
403 *
404 * This function generates a soft reset through the port multiplier,
405 * keeping port communications intact.
406 *
407 * The SII chip will do the whole mess for us. However, the command
408 * can brick the port if the target is still busy from the previous
409 * COMRESET.
410 */
411 int
sili_pm_softreset(struct sili_port * ap,int target)412 sili_pm_softreset(struct sili_port *ap, int target)
413 {
414 struct ata_port *at;
415 struct sili_ccb *ccb;
416 struct sili_prb *prb;
417 int error;
418 u_int32_t data;
419 u_int32_t sig;
420 int timeout;
421
422 error = EIO;
423 at = &ap->ap_ata[target];
424
425 kprintf("%s: PM softreset\n", ATANAME(ap, at));
426
427 /*
428 * Prep the special soft-reset SII command.
429 */
430 ccb = sili_get_err_ccb(ap);
431 ccb->ccb_done = sili_pm_empty_done;
432 ccb->ccb_xa.flags = ATA_F_POLL | ATA_F_EXCLUSIVE | ATA_F_AUTOSENSE;
433 ccb->ccb_xa.complete = sili_pm_dummy_done;
434 ccb->ccb_xa.at = at;
435
436 prb = ccb->ccb_prb;
437 bzero(&prb->prb_h2d, sizeof(prb->prb_h2d));
438 prb->prb_h2d.flags = at->at_target;
439 prb->prb_control = SILI_PRB_CTRL_SOFTRESET;
440 prb->prb_override = 0;
441 prb->prb_xfer_count = 0;
442
443 ccb->ccb_xa.state = ATA_S_PENDING;
444
445 timeout = (target == 15) ? 1000 : 8000;
446
447 /*
448 * NOTE: Must use sili_quick_timeout() because we hold the err_ccb
449 */
450 if (sili_poll(ccb, timeout, sili_quick_timeout) != ATA_S_COMPLETE) {
451 if (target != 15) {
452 kprintf("%s: (PM) Softreset FIS failed\n",
453 ATANAME(ap, at));
454 }
455 sili_put_err_ccb(ccb);
456 goto err;
457 }
458
459 sig = (prb->prb_d2h.lba_high << 24) |
460 (prb->prb_d2h.lba_mid << 16) |
461 (prb->prb_d2h.lba_low << 8) |
462 (prb->prb_d2h.sector_count);
463 kprintf("%s: PM SOFTRESET SIGNATURE %08x\n", ATANAME(ap, at), sig);
464
465 sili_put_err_ccb(ccb);
466
467 /*
468 * Clear the phy status of the target so we can get a new event.
469 *
470 * Target 15 is the PM itself and these registers have
471 * different meanings.
472 */
473 if (target != 15) {
474 if (sili_pm_phy_status(ap, target, &data)) {
475 kprintf("%s: (C)Cannot clear phy status\n",
476 ATANAME(ap ,at));
477 }
478 sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
479 }
480
481 /*
482 * If the softreset is trying to clear a BSY condition after a
483 * normal portreset we assign the port type.
484 *
485 * If the softreset is being run first as part of the ccb error
486 * processing code then report if the device signature changed
487 * unexpectedly.
488 */
489 if (at->at_type == ATA_PORT_T_NONE) {
490 at->at_type = sili_port_signature(ap, at, sig);
491 } else {
492 if (sili_port_signature(ap, at, sig) != at->at_type) {
493 kprintf("%s: device signature unexpectedly "
494 "changed\n", ATANAME(ap, at));
495 error = EBUSY; /* XXX */
496 }
497 }
498 error = 0;
499 err:
500 /*
501 * Clear error status so we can detect removal.
502 *
503 * Target 15 is the PM itself and these registers have
504 * different meanings.
505 */
506 kprintf("%s: PM softreset done error %d\n", ATANAME(ap, at), error);
507 if (error == 0 && target != 15) {
508 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) {
509 kprintf("%s: sili_pm_softreset unable to clear SERR\n",
510 ATANAME(ap, at));
511 ap->ap_flags &= ~AP_F_IGNORE_IFS;
512 }
513 }
514
515 at->at_probe = error ? ATA_PROBE_FAILED : ATA_PROBE_NEED_IDENT;
516 return (error);
517 }
518
519
520 /*
521 * Return the phy status for a target behind a port multiplier and
522 * reset SATA_PMREG_SERR.
523 *
524 * Returned bits follow SILI_PREG_SSTS bits. The SILI_PREG_SSTS_SPD
525 * bits can be used to determine the link speed and will be 0 if there
526 * is no link.
527 *
528 * 0 is returned if any communications error occurs.
529 */
530 int
sili_pm_phy_status(struct sili_port * ap,int target,u_int32_t * datap)531 sili_pm_phy_status(struct sili_port *ap, int target, u_int32_t *datap)
532 {
533 int error;
534
535 error = sili_pm_read(ap, target, SATA_PMREG_SSTS, datap);
536 if (error == 0)
537 error = sili_pm_write(ap, target, SATA_PMREG_SERR, -1);
538 if (error)
539 *datap = 0;
540 return(error);
541 }
542
543 int
sili_pm_set_feature(struct sili_port * ap,int feature,int enable)544 sili_pm_set_feature(struct sili_port *ap, int feature, int enable)
545 {
546 struct ata_xfer *xa;
547 int error;
548
549 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]);
550
551 xa->fis->type = ATA_FIS_TYPE_H2D;
552 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15;
553 xa->fis->command = enable ? ATA_C_SATA_FEATURE_ENA :
554 ATA_C_SATA_FEATURE_DIS;
555 xa->fis->sector_count = feature;
556 xa->fis->control = ATA_FIS_CONTROL_4BIT;
557
558 xa->complete = sili_pm_dummy_done;
559 xa->datalen = 0;
560 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE;
561 xa->timeout = 1000;
562
563 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
564 error = 0;
565 else
566 error = EIO;
567 sili_ata_put_xfer(xa);
568 return(error);
569 }
570
571 /*
572 * Check that a target is still good.
573 */
574 void
sili_pm_check_good(struct sili_port * ap,int target)575 sili_pm_check_good(struct sili_port *ap, int target)
576 {
577 struct ata_port *at;
578 u_int32_t data;
579
580 /*
581 * It looks like we might have to read the EINFO register
582 * to allow the PM to generate a new event.
583 */
584 if (sili_pm_read(ap, 15, SATA_PMREG_EINFO, &data)) {
585 kprintf("%s: Port multiplier EINFO could not be read\n",
586 PORTNAME(ap));
587 }
588
589 if (sili_pm_write(ap, target, SATA_PMREG_SERR, -1)) {
590 kprintf("%s: Port multiplier: SERR could not be cleared\n",
591 PORTNAME(ap));
592 }
593
594 if (target == CAM_TARGET_WILDCARD || target >= ap->ap_pmcount)
595 return;
596 at = &ap->ap_ata[target];
597
598 /*
599 * If the device needs an init or hard reset also make sure the
600 * PHY is turned on.
601 */
602 if (at->at_probe <= ATA_PROBE_NEED_HARD_RESET) {
603 /*kprintf("%s DOHARD\n", ATANAME(ap, at));*/
604 sili_pm_hardreset(ap, target, 1);
605 }
606
607 /*
608 * Read the detect status
609 */
610 if (sili_pm_read(ap, target, SATA_PMREG_SSTS, &data)) {
611 kprintf("%s: Unable to access PM SSTS register target %d\n",
612 PORTNAME(ap), target);
613 return;
614 }
615 if ((data & SATA_PM_SSTS_DET) != SATA_PM_SSTS_DET_DEV) {
616 /*kprintf("%s: DETECT %08x\n", ATANAME(ap, at), data);*/
617 if (at->at_probe != ATA_PROBE_FAILED) {
618 at->at_probe = ATA_PROBE_FAILED;
619 at->at_type = ATA_PORT_T_NONE;
620 at->at_features |= ATA_PORT_F_RESCAN;
621 kprintf("%s: HOTPLUG (PM) - Device removed\n",
622 ATANAME(ap, at));
623 }
624 } else {
625 if (at->at_probe == ATA_PROBE_FAILED) {
626 at->at_probe = ATA_PROBE_NEED_HARD_RESET;
627 at->at_features |= ATA_PORT_F_RESCAN;
628 kprintf("%s: HOTPLUG (PM) - Device inserted\n",
629 ATANAME(ap, at));
630 }
631 }
632 }
633
634 /*
635 * Read a PM register
636 */
637 int
sili_pm_read(struct sili_port * ap,int target,int which,u_int32_t * datap)638 sili_pm_read(struct sili_port *ap, int target, int which, u_int32_t *datap)
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_READ_PM;
648 xa->fis->features = which;
649 xa->fis->device = target | ATA_H2D_DEVICE_LBA;
650 xa->fis->control = ATA_FIS_CONTROL_4BIT;
651
652 xa->complete = sili_pm_dummy_done;
653 xa->datalen = 0;
654 xa->flags = ATA_F_POLL | ATA_F_AUTOSENSE;
655 xa->timeout = 1000;
656
657 if (sili_ata_cmd(xa) == ATA_S_COMPLETE) {
658 *datap = xa->rfis->sector_count | (xa->rfis->lba_low << 8) |
659 (xa->rfis->lba_mid << 16) | (xa->rfis->lba_high << 24);
660 error = 0;
661 } else {
662 kprintf("%s.%d pm_read SCA[%d] failed\n",
663 PORTNAME(ap), target, which);
664 *datap = 0;
665 error = EIO;
666 }
667 sili_ata_put_xfer(xa);
668 return (error);
669 }
670
671 /*
672 * Write a PM register
673 */
674 int
sili_pm_write(struct sili_port * ap,int target,int which,u_int32_t data)675 sili_pm_write(struct sili_port *ap, int target, int which, u_int32_t data)
676 {
677 struct ata_xfer *xa;
678 int error;
679
680 xa = sili_ata_get_xfer(ap, &ap->ap_ata[15]);
681
682 xa->fis->type = ATA_FIS_TYPE_H2D;
683 xa->fis->flags = ATA_H2D_FLAGS_CMD | 15;
684 xa->fis->command = ATA_C_WRITE_PM;
685 xa->fis->features = which;
686 xa->fis->device = target | ATA_H2D_DEVICE_LBA;
687 xa->fis->sector_count = (u_int8_t)data;
688 xa->fis->lba_low = (u_int8_t)(data >> 8);
689 xa->fis->lba_mid = (u_int8_t)(data >> 16);
690 xa->fis->lba_high = (u_int8_t)(data >> 24);
691 xa->fis->control = ATA_FIS_CONTROL_4BIT;
692
693 xa->complete = sili_pm_dummy_done;
694 xa->datalen = 0;
695 xa->flags = ATA_F_POLL | ATA_F_EXCLUSIVE;
696 xa->timeout = 1000;
697
698 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
699 error = 0;
700 else
701 error = EIO;
702 sili_ata_put_xfer(xa);
703 return(error);
704 }
705
706 /*
707 * Dummy done callback for xa.
708 */
709 static void
sili_pm_dummy_done(struct ata_xfer * xa)710 sili_pm_dummy_done(struct ata_xfer *xa)
711 {
712 }
713
714 static void
sili_pm_empty_done(struct sili_ccb * ccb)715 sili_pm_empty_done(struct sili_ccb *ccb)
716 {
717 }
718