SILI - Work around hardware LRAM bugs part 2/2.
[dragonfly.git] / sys / dev / disk / sili / sili_cam.c
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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 * Copyright (c) 2007 David Gwynne <dlg@openbsd.org>
36 *
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies.
40 *
41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
48 *
49 * $OpenBSD: atascsi.c,v 1.64 2009/02/16 21:19:06 miod Exp $
50 * $DragonFly$
51 */
52/*
53 * Implement each SATA port as its own SCSI bus on CAM. This way we can
54 * implement future port multiplier features as individual devices on the
55 * bus.
56 *
57 * Much of the cdb<->xa conversion code was taken from OpenBSD, the rest
58 * was written natively for DragonFly.
59 */
60
61#include "sili.h"
62
63const char *ScsiTypeArray[32] = {
64 "DIRECT",
65 "SEQUENTIAL",
66 "PRINTER",
67 "PROCESSOR",
68 "WORM",
69 "CDROM",
70 "SCANNER",
71 "OPTICAL",
72 "CHANGER",
73 "COMM",
74 "ASC0",
75 "ASC1",
76 "STORARRAY",
77 "ENCLOSURE",
78 "RBC",
79 "OCRW",
80 "0x10",
81 "OSD",
82 "ADC",
83 "0x13",
84 "0x14",
85 "0x15",
86 "0x16",
87 "0x17",
88 "0x18",
89 "0x19",
90 "0x1A",
91 "0x1B",
92 "0x1C",
93 "0x1D",
94 "0x1E",
95 "NODEVICE"
96};
97
98static void sili_xpt_action(struct cam_sim *sim, union ccb *ccb);
99static void sili_xpt_poll(struct cam_sim *sim);
100static void sili_xpt_scsi_disk_io(struct sili_port *ap,
101 struct ata_port *at, union ccb *ccb);
102static void sili_xpt_scsi_atapi_io(struct sili_port *ap,
103 struct ata_port *at, union ccb *ccb);
104
105static void sili_ata_complete_disk_rw(struct ata_xfer *xa);
106static void sili_ata_complete_disk_synchronize_cache(struct ata_xfer *xa);
107static void sili_atapi_complete_cmd(struct ata_xfer *xa);
108static void sili_ata_dummy_sense(struct scsi_sense_data *sense_data);
109static void sili_ata_atapi_sense(struct ata_fis_d2h *rfis,
110 struct scsi_sense_data *sense_data);
111
112static int sili_cam_probe_disk(struct sili_port *ap, struct ata_port *at);
113static int sili_cam_probe_atapi(struct sili_port *ap, struct ata_port *at);
114static void sili_ata_dummy_done(struct ata_xfer *xa);
115static void ata_fix_identify(struct ata_identify *id);
116static void sili_cam_rescan(struct sili_port *ap);
117
118int
119sili_cam_attach(struct sili_port *ap)
120{
121 struct cam_devq *devq;
122 struct cam_sim *sim;
123 int error;
124 int unit;
125
126 kprintf("%s: CAM ATTACH\n", PORTNAME(ap));
127 /*
128 * We want at least one ccb to be available for error processing
129 * so don't let CAM use more then ncmds - 1.
130 */
131 unit = device_get_unit(ap->ap_sc->sc_dev);
132 if (ap->ap_sc->sc_ncmds > 1)
133 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds - 1);
134 else
135 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds);
136 if (devq == NULL) {
137 return (ENOMEM);
138 }
139 sim = cam_sim_alloc(sili_xpt_action, sili_xpt_poll, "sili",
140 (void *)ap, unit, &sim_mplock, 1, 1, devq);
141 cam_simq_release(devq);
142 if (sim == NULL) {
143 return (ENOMEM);
144 }
145 ap->ap_sim = sim;
146 sili_os_unlock_port(ap);
147 error = xpt_bus_register(ap->ap_sim, ap->ap_num);
148 sili_os_lock_port(ap);
149 if (error != CAM_SUCCESS) {
150 sili_cam_detach(ap);
151 return (EINVAL);
152 }
153 kprintf("%s: CAM ATTACH2\n", PORTNAME(ap));
154 ap->ap_flags |= AP_F_BUS_REGISTERED;
155 kprintf("%s: CAM ATTACH3 %d\n", PORTNAME(ap), ap->ap_probe);
156
157 if (ap->ap_probe == ATA_PROBE_NEED_IDENT)
158 error = sili_cam_probe(ap, NULL);
159 else
160 error = 0;
161 if (error) {
162 sili_cam_detach(ap);
163 return (EIO);
164 }
165 ap->ap_flags |= AP_F_CAM_ATTACHED;
166
167 return(0);
168}
169
170/*
171 * The state of the port has changed.
172 *
173 * If at is NULL the physical port has changed state.
174 * If at is non-NULL a particular target behind a PM has changed state.
175 *
176 * If found is -1 the target state must be queued to a non-interrupt context.
177 * (only works with at == NULL).
178 *
179 * If found is 0 the target was removed.
180 * If found is 1 the target was inserted.
181 */
182void
183sili_cam_changed(struct sili_port *ap, struct ata_port *atx, int found)
184{
185 struct cam_path *tmppath;
186 int status;
187 int target;
188
189 target = atx ? atx->at_target : CAM_TARGET_WILDCARD;
190
191 if (ap->ap_sim == NULL)
192 return;
193 if (found == CAM_TARGET_WILDCARD) {
194 status = xpt_create_path(&tmppath, NULL,
195 cam_sim_path(ap->ap_sim),
196 target, CAM_LUN_WILDCARD);
197 if (status != CAM_REQ_CMP)
198 return;
199 sili_cam_rescan(ap);
200 } else {
201 status = xpt_create_path(&tmppath, NULL,
202 cam_sim_path(ap->ap_sim),
203 target,
204 CAM_LUN_WILDCARD);
205 if (status != CAM_REQ_CMP)
206 return;
207#if 0
208 /*
209 * This confuses CAM
210 */
211 if (found)
212 xpt_async(AC_FOUND_DEVICE, tmppath, NULL);
213 else
214 xpt_async(AC_LOST_DEVICE, tmppath, NULL);
215#endif
216 }
217 xpt_free_path(tmppath);
218}
219
220void
221sili_cam_detach(struct sili_port *ap)
222{
223 int error;
224
225 if ((ap->ap_flags & AP_F_CAM_ATTACHED) == 0)
226 return;
227 get_mplock();
228 if (ap->ap_sim) {
229 xpt_freeze_simq(ap->ap_sim, 1);
230 }
231 if (ap->ap_flags & AP_F_BUS_REGISTERED) {
232 error = xpt_bus_deregister(cam_sim_path(ap->ap_sim));
233 KKASSERT(error == CAM_REQ_CMP);
234 ap->ap_flags &= ~AP_F_BUS_REGISTERED;
235 }
236 if (ap->ap_sim) {
237 cam_sim_free(ap->ap_sim);
238 ap->ap_sim = NULL;
239 }
240 rel_mplock();
241 ap->ap_flags &= ~AP_F_CAM_ATTACHED;
242}
243
244/*
245 * Once the SILI port has been attached we need to probe for a device or
246 * devices on the port and setup various options.
247 *
248 * If at is NULL we are probing the direct-attached device on the port,
249 * which may or may not be a port multiplier.
250 */
251int
252sili_cam_probe(struct sili_port *ap, struct ata_port *atx)
253{
254 struct ata_port *at;
255 struct ata_xfer *xa;
256 u_int64_t capacity;
257 u_int64_t capacity_bytes;
258 int model_len;
259 int error;
260 int devncqdepth;
261 int i;
262 const char *wcstr;
263 const char *rastr;
264 const char *scstr;
265 const char *type;
266
267 error = EIO;
268
269 /*
270 * Delayed CAM attachment for initial probe, sim may be NULL
271 */
272 if (ap->ap_sim == NULL)
273 return(0);
274
275 /*
276 * A NULL atx indicates a probe of the directly connected device.
277 * A non-NULL atx indicates a device connected via a port multiplier.
278 * We need to preserve atx for calls to sili_ata_get_xfer().
279 *
280 * at is always non-NULL. For directly connected devices we supply
281 * an (at) pointing to target 0.
282 */
283 if (atx == NULL) {
284 at = ap->ap_ata; /* direct attached - device 0 */
285 if (ap->ap_type == ATA_PORT_T_PM) {
286 kprintf("%s: Found Port Multiplier\n",
287 ATANAME(ap, atx));
288 return (0);
289 }
290 at->at_type = ap->ap_type;
291 } else {
292 at = atx;
293 if (atx->at_type == ATA_PORT_T_PM) {
294 kprintf("%s: Bogus device, reducing port count to %d\n",
295 ATANAME(ap, atx), atx->at_target);
296 if (ap->ap_pmcount > atx->at_target)
297 ap->ap_pmcount = atx->at_target;
298 goto err;
299 }
300 }
301 if (ap->ap_type == ATA_PORT_T_NONE)
302 goto err;
303 if (at->at_type == ATA_PORT_T_NONE)
304 goto err;
305
306 /*
307 * Issue identify, saving the result
308 */
309 xa = sili_ata_get_xfer(ap, atx);
310 xa->complete = sili_ata_dummy_done;
311 xa->data = &at->at_identify;
312 xa->datalen = sizeof(at->at_identify);
4383d440 313 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
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314 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
315
316 switch(at->at_type) {
317 case ATA_PORT_T_DISK:
318 xa->fis->command = ATA_C_IDENTIFY;
319 type = "DISK";
320 break;
321 case ATA_PORT_T_ATAPI:
322 xa->fis->command = ATA_C_ATAPI_IDENTIFY;
4383d440 323 xa->flags |= ATA_F_AUTOSENSE;
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324 type = "ATAPI";
325 break;
326 default:
327 xa->fis->command = ATA_C_ATAPI_IDENTIFY;
328 type = "UNKNOWN(ATAPI?)";
329 break;
330 }
331 xa->fis->features = 0;
332 xa->fis->device = 0;
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333 xa->timeout = 1000;
334
335 if (sili_ata_cmd(xa) != ATA_S_COMPLETE) {
336 kprintf("%s: Detected %s device but unable to IDENTIFY\n",
337 ATANAME(ap, atx), type);
338 sili_ata_put_xfer(xa);
339 goto err;
340 }
341 sili_ata_put_xfer(xa);
342
343 ata_fix_identify(&at->at_identify);
344
345 /*
346 * Read capacity using SATA probe info.
347 */
348 if (le16toh(at->at_identify.cmdset83) & 0x0400) {
349 /* LBA48 feature set supported */
350 capacity = 0;
351 for (i = 3; i >= 0; --i) {
352 capacity <<= 16;
353 capacity +=
354 le16toh(at->at_identify.addrsecxt[i]);
355 }
356 } else {
357 capacity = le16toh(at->at_identify.addrsec[1]);
358 capacity <<= 16;
359 capacity += le16toh(at->at_identify.addrsec[0]);
360 }
361 at->at_capacity = capacity;
362 if (atx == NULL)
363 ap->ap_probe = ATA_PROBE_GOOD;
364
365 capacity_bytes = capacity * 512;
366
367 /*
368 * Negotiate NCQ, throw away any ata_xfer's beyond the negotiated
369 * number of slots and limit the number of CAM ccb's to one less
370 * so we always have a slot available for recovery.
371 *
372 * NCQ is not used if ap_ncqdepth is 1 or the host controller does
373 * not support it, and in that case the driver can handle extra
374 * ccb's.
375 *
376 * NCQ is currently used only with direct-attached disks. It is
377 * not used with port multipliers or direct-attached ATAPI devices.
378 *
379 * Remember at least one extra CCB needs to be reserved for the
380 * error ccb.
381 */
382 if ((ap->ap_sc->sc_flags & SILI_F_NCQ) &&
383 at->at_type == ATA_PORT_T_DISK &&
384 (le16toh(at->at_identify.satacap) & (1 << 8))) {
385 at->at_ncqdepth = (le16toh(at->at_identify.qdepth) & 0x1F) + 1;
386 devncqdepth = at->at_ncqdepth;
387 if (at->at_ncqdepth > ap->ap_sc->sc_ncmds)
388 at->at_ncqdepth = ap->ap_sc->sc_ncmds;
389 if (at->at_ncqdepth > 1) {
390 for (i = 0; i < ap->ap_sc->sc_ncmds; ++i) {
391 xa = sili_ata_get_xfer(ap, atx);
392 if (xa->tag < at->at_ncqdepth) {
393 xa->state = ATA_S_COMPLETE;
394 sili_ata_put_xfer(xa);
395 }
396 }
397 if (at->at_ncqdepth >= ap->ap_sc->sc_ncmds) {
398 cam_devq_resize(ap->ap_sim->devq,
399 at->at_ncqdepth - 1);
400 }
401 }
402 } else {
403 devncqdepth = 0;
404 }
405
406 /*
407 * Make the model string a bit more presentable
408 */
409 for (model_len = 40; model_len; --model_len) {
410 if (at->at_identify.model[model_len-1] == ' ')
411 continue;
412 if (at->at_identify.model[model_len-1] == 0)
413 continue;
414 break;
415 }
416
417 /*
418 * Generate informatiive strings.
419 *
420 * NOTE: We do not automatically set write caching, lookahead,
421 * or the security state for ATAPI devices.
422 */
423 if (at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) {
424 if (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE)
425 wcstr = "enabled";
426 else if (at->at_type == ATA_PORT_T_ATAPI)
427 wcstr = "disabled";
428 else
429 wcstr = "enabling";
430 } else {
431 wcstr = "notsupp";
432 }
433
434 if (at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) {
435 if (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD)
436 rastr = "enabled";
437 else if (at->at_type == ATA_PORT_T_ATAPI)
438 rastr = "disabled";
439 else
440 rastr = "enabling";
441 } else {
442 rastr = "notsupp";
443 }
444
445 if (at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) {
446 if (at->at_identify.securestatus & ATA_SECURE_FROZEN)
447 scstr = "frozen";
448 else if (at->at_type == ATA_PORT_T_ATAPI)
449 scstr = "unfrozen";
450 else if (SiliNoFeatures & (1 << ap->ap_num))
451 scstr = "<disabled>";
452 else
453 scstr = "freezing";
454 } else {
455 scstr = "notsupp";
456 }
457
458 kprintf("%s: Found %s \"%*.*s %8.8s\" serial=\"%20.20s\"\n"
459 "%s: tags=%d/%d satacap=%04x satafea=%04x NCQ=%s "
460 "capacity=%lld.%02dMB\n",
461
462 ATANAME(ap, atx),
463 type,
464 model_len, model_len,
465 at->at_identify.model,
466 at->at_identify.firmware,
467 at->at_identify.serial,
468
469 ATANAME(ap, atx),
470 devncqdepth, ap->ap_sc->sc_ncmds,
471 at->at_identify.satacap,
472 at->at_identify.satafsup,
473 (at->at_ncqdepth > 1 ? "YES" : "NO"),
474 (long long)capacity_bytes / (1024 * 1024),
475 (int)(capacity_bytes % (1024 * 1024)) * 100 / (1024 * 1024)
476 );
477 kprintf("%s: f85=%04x f86=%04x f87=%04x WC=%s RA=%s SEC=%s\n",
478 ATANAME(ap, atx),
479 at->at_identify.features85,
480 at->at_identify.features86,
481 at->at_identify.features87,
482 wcstr,
483 rastr,
484 scstr
485 );
486
487 /*
488 * Additional type-specific probing
489 */
490 switch(at->at_type) {
491 case ATA_PORT_T_DISK:
492 error = sili_cam_probe_disk(ap, atx);
493 break;
494 case ATA_PORT_T_ATAPI:
495 error = sili_cam_probe_atapi(ap, atx);
496 break;
497 default:
498 error = EIO;
499 break;
500 }
501err:
502 kprintf("%s: CAM PROBE %d\n", ATANAME(ap, atx), error);
503 if (error) {
504 at->at_probe = ATA_PROBE_FAILED;
505 if (atx == NULL)
506 ap->ap_probe = at->at_probe;
507 } else {
508 at->at_probe = ATA_PROBE_GOOD;
509 if (atx == NULL)
510 ap->ap_probe = at->at_probe;
511 }
512 return (error);
513}
514
515/*
516 * DISK-specific probe after initial ident
517 */
518static int
519sili_cam_probe_disk(struct sili_port *ap, struct ata_port *atx)
520{
521 struct ata_port *at;
522 struct ata_xfer *xa;
523
524 at = atx ? atx : ap->ap_ata;
525
526 /*
527 * Enable write cache if supported
528 *
529 * NOTE: "WD My Book" external disk devices have a very poor
530 * daughter board between the the ESATA and the HD. Sending
531 * any ATA_C_SET_FEATURES commands will break the hardware port
532 * with a fatal protocol error. However, this device also
533 * indicates that WRITECACHE is already on and READAHEAD is
534 * not supported so we avoid the issue.
535 */
536 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) &&
537 (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) == 0) {
538 xa = sili_ata_get_xfer(ap, atx);
539 xa->complete = sili_ata_dummy_done;
540 xa->fis->command = ATA_C_SET_FEATURES;
541 /*xa->fis->features = ATA_SF_WRITECACHE_EN;*/
542 xa->fis->features = ATA_SF_LOOKAHEAD_EN;
543 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
544 xa->fis->device = 0;
545 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
546 xa->timeout = 1000;
547 xa->datalen = 0;
548 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
549 at->at_features |= ATA_PORT_F_WCACHE;
550 else
551 kprintf("%s: Unable to enable write-caching\n",
552 ATANAME(ap, atx));
553 sili_ata_put_xfer(xa);
554 }
555
556 /*
557 * Enable readahead if supported
558 */
559 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) &&
560 (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) == 0) {
561 xa = sili_ata_get_xfer(ap, atx);
562 xa->complete = sili_ata_dummy_done;
563 xa->fis->command = ATA_C_SET_FEATURES;
564 xa->fis->features = ATA_SF_LOOKAHEAD_EN;
565 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
566 xa->fis->device = 0;
567 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
568 xa->timeout = 1000;
569 xa->datalen = 0;
570 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
571 at->at_features |= ATA_PORT_F_RAHEAD;
572 else
573 kprintf("%s: Unable to enable read-ahead\n",
574 ATANAME(ap, atx));
575 sili_ata_put_xfer(xa);
576 }
577
578 /*
579 * FREEZE LOCK the device so malicious users can't lock it on us.
580 * As there is no harm in issuing this to devices that don't
581 * support the security feature set we just send it, and don't bother
582 * checking if the device sends a command abort to tell us it doesn't
583 * support it
584 */
585 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) &&
586 (at->at_identify.securestatus & ATA_SECURE_FROZEN) == 0 &&
587 (SiliNoFeatures & (1 << ap->ap_num)) == 0) {
588 xa = sili_ata_get_xfer(ap, atx);
589 xa->complete = sili_ata_dummy_done;
590 xa->fis->command = ATA_C_SEC_FREEZE_LOCK;
591 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
592 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
593 xa->timeout = 1000;
594 xa->datalen = 0;
595 if (sili_ata_cmd(xa) == ATA_S_COMPLETE)
596 at->at_features |= ATA_PORT_F_FRZLCK;
597 else
598 kprintf("%s: Unable to set security freeze\n",
599 ATANAME(ap, atx));
600 sili_ata_put_xfer(xa);
601 }
602
603 return (0);
604}
605
606/*
607 * ATAPI-specific probe after initial ident
608 */
609static int
610sili_cam_probe_atapi(struct sili_port *ap, struct ata_port *atx)
611{
612 return(0);
613}
614
615/*
616 * Fix byte ordering so buffers can be accessed as
617 * strings.
618 */
619static void
620ata_fix_identify(struct ata_identify *id)
621{
622 u_int16_t *swap;
623 int i;
624
625 swap = (u_int16_t *)id->serial;
626 for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++)
627 swap[i] = bswap16(swap[i]);
628
629 swap = (u_int16_t *)id->firmware;
630 for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++)
631 swap[i] = bswap16(swap[i]);
632
633 swap = (u_int16_t *)id->model;
634 for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++)
635 swap[i] = bswap16(swap[i]);
636}
637
638/*
639 * Dummy done callback for xa.
640 */
641static void
642sili_ata_dummy_done(struct ata_xfer *xa)
643{
644}
645
646/*
647 * Use an engineering request to initiate a target scan for devices
648 * behind a port multiplier.
649 *
650 * An asynchronous bus scan is used to avoid reentrancy issues.
651 */
652static void
653sili_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
654{
655 struct sili_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
656
657 if (ccb->ccb_h.func_code == XPT_SCAN_BUS) {
658 kprintf("%s: CAM RESCAN CALLBACK\n", PORTNAME(ap));
659 ap->ap_flags &= ~AP_F_SCAN_RUNNING;
660 if (ap->ap_flags & AP_F_SCAN_REQUESTED) {
661 ap->ap_flags &= ~AP_F_SCAN_REQUESTED;
662 sili_cam_rescan(ap);
663 }
664 ap->ap_flags |= AP_F_SCAN_COMPLETED;
665 wakeup(&ap->ap_flags);
666 }
667 xpt_free_ccb(ccb);
668}
669
670static void
671sili_cam_rescan(struct sili_port *ap)
672{
673 struct cam_path *path;
674 union ccb *ccb;
675 int status;
676 int i;
677
678 kprintf("%s: CAM RESCAN-A\n", PORTNAME(ap));
679 if (ap->ap_flags & AP_F_SCAN_RUNNING) {
680 ap->ap_flags |= AP_F_SCAN_REQUESTED;
681 return;
682 }
683 ap->ap_flags |= AP_F_SCAN_RUNNING;
684 for (i = 0; i < SILI_MAX_PMPORTS; ++i) {
685 ap->ap_ata[i].at_features |= ATA_PORT_F_RESCAN;
686 }
687
688 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim),
689 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
690 if (status != CAM_REQ_CMP)
691 return;
692
693 ccb = xpt_alloc_ccb();
694 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */
695 ccb->ccb_h.func_code = XPT_ENG_EXEC;
696 ccb->ccb_h.cbfcnp = sili_cam_rescan_callback;
697 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
698 ccb->crcn.flags = CAM_FLAG_NONE;
699 xpt_action_async(ccb);
700}
701
702static void
703sili_xpt_rescan(struct sili_port *ap)
704{
705 struct cam_path *path;
706 union ccb *ccb;
707 int status;
708
709 kprintf("%s: CAM RESCAN-B\n", PORTNAME(ap));
710 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim),
711 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
712 if (status != CAM_REQ_CMP)
713 return;
714
715 ccb = xpt_alloc_ccb();
716 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */
717 ccb->ccb_h.func_code = XPT_SCAN_BUS;
718 ccb->ccb_h.cbfcnp = sili_cam_rescan_callback;
719 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
720 ccb->crcn.flags = CAM_FLAG_NONE;
721 xpt_action_async(ccb);
722}
723
724/*
725 * Action function - dispatch command
726 */
727static
728void
729sili_xpt_action(struct cam_sim *sim, union ccb *ccb)
730{
731 struct sili_port *ap;
732 struct ata_port *at, *atx;
733 struct ccb_hdr *ccbh;
734 int unit;
735
736 /* XXX lock */
737 ap = cam_sim_softc(sim);
738 at = ap->ap_ata;
739 atx = NULL;
740 KKASSERT(ap != NULL);
741 ccbh = &ccb->ccb_h;
742 unit = cam_sim_unit(sim);
743
744 /*
745 * Early failure checks. These checks do not apply to XPT_PATH_INQ,
746 * otherwise the bus rescan will not remove the dead devices when
747 * unplugging a PM.
748 *
749 * For non-wildcards we have one target (0) and one lun (0),
750 * unless we have a port multiplier.
751 *
752 * A wildcard target indicates only the general bus is being
753 * probed.
754 *
755 * Calculate at and atx. at is always non-NULL. atx is only
756 * non-NULL for direct-attached devices. It will be NULL for
757 * devices behind a port multiplier.
758 *
759 * XXX What do we do with a LUN wildcard?
760 */
761 if (ccbh->target_id != CAM_TARGET_WILDCARD &&
762 ccbh->func_code != XPT_PATH_INQ) {
763 if (ap->ap_type == ATA_PORT_T_NONE) {
764 ccbh->status = CAM_DEV_NOT_THERE;
765 xpt_done(ccb);
766 return;
767 }
768 if (ccbh->target_id < 0 || ccbh->target_id >= ap->ap_pmcount) {
769 ccbh->status = CAM_DEV_NOT_THERE;
770 xpt_done(ccb);
771 return;
772 }
773 at += ccbh->target_id;
774 if (ap->ap_type == ATA_PORT_T_PM)
775 atx = at;
776
777 if (ccbh->target_lun != CAM_LUN_WILDCARD && ccbh->target_lun) {
778 ccbh->status = CAM_DEV_NOT_THERE;
779 xpt_done(ccb);
780 return;
781 }
782 }
783
784 /*
785 * Switch on the meta XPT command
786 */
787 switch(ccbh->func_code) {
788 case XPT_ENG_EXEC:
789 /*
790 * This routine is called after a port multiplier has been
791 * probed.
792 */
793 ccbh->status = CAM_REQ_CMP;
794 sili_os_lock_port(ap);
795 sili_port_state_machine(ap, 0);
796 sili_os_unlock_port(ap);
797 xpt_done(ccb);
798 sili_xpt_rescan(ap);
799 break;
800 case XPT_PATH_INQ:
801 /*
802 * This command always succeeds, otherwise the bus scan
803 * will not detach dead devices.
804 */
805 ccb->cpi.version_num = 1;
806 ccb->cpi.hba_inquiry = 0;
807 ccb->cpi.target_sprt = 0;
808 ccb->cpi.hba_misc = PIM_SEQSCAN;
809 ccb->cpi.hba_eng_cnt = 0;
810 bzero(ccb->cpi.vuhba_flags, sizeof(ccb->cpi.vuhba_flags));
811 ccb->cpi.max_target = SILI_MAX_PMPORTS - 1;
812 ccb->cpi.max_lun = 0;
813 ccb->cpi.async_flags = 0;
814 ccb->cpi.hpath_id = 0;
815 ccb->cpi.initiator_id = SILI_MAX_PMPORTS - 1;
816 ccb->cpi.unit_number = cam_sim_unit(sim);
817 ccb->cpi.bus_id = cam_sim_bus(sim);
818 ccb->cpi.base_transfer_speed = 150000;
819 ccb->cpi.transport = XPORT_SATA;
820 ccb->cpi.transport_version = 1;
821 ccb->cpi.protocol = PROTO_SCSI;
822 ccb->cpi.protocol_version = SCSI_REV_2;
823
824 ccbh->status = CAM_REQ_CMP;
825 if (ccbh->target_id == CAM_TARGET_WILDCARD) {
826 sili_os_lock_port(ap);
827 sili_port_state_machine(ap, 0);
828 sili_os_unlock_port(ap);
829 } else {
830 switch(sili_pread(ap, SILI_PREG_SSTS) &
831 SILI_PREG_SSTS_SPD) {
832 case SILI_PREG_SSTS_SPD_GEN1:
833 ccb->cpi.base_transfer_speed = 150000;
834 break;
835 case SILI_PREG_SSTS_SPD_GEN2:
836 ccb->cpi.base_transfer_speed = 300000;
837 break;
838 default:
839 /* unknown */
840 ccb->cpi.base_transfer_speed = 1000;
841 break;
842 }
843#if 0
844 if (ap->ap_type == ATA_PORT_T_NONE)
845 ccbh->status = CAM_DEV_NOT_THERE;
846#endif
847 }
848 xpt_done(ccb);
849 break;
850 case XPT_RESET_DEV:
851 sili_os_lock_port(ap);
852 if (ap->ap_type == ATA_PORT_T_NONE) {
853 ccbh->status = CAM_DEV_NOT_THERE;
854 } else {
855 sili_port_reset(ap, atx, 0);
856 ccbh->status = CAM_REQ_CMP;
857 }
858 sili_os_unlock_port(ap);
859 xpt_done(ccb);
860 break;
861 case XPT_RESET_BUS:
862 sili_os_lock_port(ap);
863 sili_port_reset(ap, NULL, 1);
864 sili_os_unlock_port(ap);
865 ccbh->status = CAM_REQ_CMP;
866 xpt_done(ccb);
867 break;
868 case XPT_SET_TRAN_SETTINGS:
869 ccbh->status = CAM_FUNC_NOTAVAIL;
870 xpt_done(ccb);
871 break;
872 case XPT_GET_TRAN_SETTINGS:
873 ccb->cts.protocol = PROTO_SCSI;
874 ccb->cts.protocol_version = SCSI_REV_2;
875 ccb->cts.transport = XPORT_SATA;
876 ccb->cts.transport_version = XPORT_VERSION_UNSPECIFIED;
877 ccb->cts.proto_specific.valid = 0;
878 ccb->cts.xport_specific.valid = 0;
879 ccbh->status = CAM_REQ_CMP;
880 xpt_done(ccb);
881 break;
882 case XPT_CALC_GEOMETRY:
883 cam_calc_geometry(&ccb->ccg, 1);
884 xpt_done(ccb);
885 break;
886 case XPT_SCSI_IO:
887 /*
888 * Our parallel startup code might have only probed through
889 * to the IDENT, so do the last step if necessary.
890 */
891 if (at->at_probe == ATA_PROBE_NEED_IDENT)
892 sili_cam_probe(ap, atx);
893 if (at->at_probe != ATA_PROBE_GOOD) {
894 ccbh->status = CAM_DEV_NOT_THERE;
895 xpt_done(ccb);
896 break;
897 }
898 switch(at->at_type) {
899 case ATA_PORT_T_DISK:
900 sili_xpt_scsi_disk_io(ap, atx, ccb);
901 break;
902 case ATA_PORT_T_ATAPI:
903 sili_xpt_scsi_atapi_io(ap, atx, ccb);
904 break;
905 default:
906 ccbh->status = CAM_REQ_INVALID;
907 xpt_done(ccb);
908 break;
909 }
910 break;
911 default:
912 ccbh->status = CAM_REQ_INVALID;
913 xpt_done(ccb);
914 break;
915 }
916}
917
918/*
919 * Poll function.
920 *
921 * Generally this function gets called heavily when interrupts might be
922 * non-operational, during a halt/reboot or panic.
923 */
924static
925void
926sili_xpt_poll(struct cam_sim *sim)
927{
928 struct sili_port *ap;
929
930 ap = cam_sim_softc(sim);
931 crit_enter();
932 sili_os_lock_port(ap);
933 sili_port_intr(ap, 1);
934 sili_os_unlock_port(ap);
935 crit_exit();
936}
937
938/*
939 * Convert the SCSI command in ccb to an ata_xfer command in xa
940 * for ATA_PORT_T_DISK operations. Set the completion function
941 * to convert the response back, then dispatch to the OpenBSD SILI
942 * layer.
943 *
944 * SILI DISK commands only support a limited command set, and we
945 * fake additional commands to make it play nice with the CAM subsystem.
946 */
947static
948void
949sili_xpt_scsi_disk_io(struct sili_port *ap, struct ata_port *atx,
950 union ccb *ccb)
951{
952 struct ccb_hdr *ccbh;
953 struct ccb_scsiio *csio;
954 struct ata_xfer *xa;
955 struct ata_port *at;
956 struct ata_fis_h2d *fis;
957 scsi_cdb_t cdb;
958 union scsi_data *rdata;
959 int rdata_len;
960 u_int64_t capacity;
961 u_int64_t lba;
962 u_int32_t count;
963
964 ccbh = &ccb->csio.ccb_h;
965 csio = &ccb->csio;
966 at = atx ? atx : &ap->ap_ata[0];
967
968 /*
969 * XXX not passing NULL at for direct attach!
970 */
971 xa = sili_ata_get_xfer(ap, atx);
972 rdata = (void *)csio->data_ptr;
973 rdata_len = csio->dxfer_len;
974
975 /*
976 * Build the FIS or process the csio to completion.
977 */
978 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ?
979 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes);
980
981 switch(cdb->generic.opcode) {
982 case REQUEST_SENSE:
983 /*
984 * Auto-sense everything, so explicit sense requests
985 * return no-sense.
986 */
987 ccbh->status = CAM_SCSI_STATUS_ERROR;
988 break;
989 case INQUIRY:
990 /*
991 * Inquiry supported features
992 *
993 * [opcode, byte2, page_code, length, control]
994 */
995 if (cdb->inquiry.byte2 & SI_EVPD) {
996 switch(cdb->inquiry.page_code) {
997 case SVPD_SUPPORTED_PAGE_LIST:
998 /* XXX atascsi_disk_vpd_supported */
999 case SVPD_UNIT_SERIAL_NUMBER:
1000 /* XXX atascsi_disk_vpd_serial */
1001 case SVPD_UNIT_DEVID:
1002 /* XXX atascsi_disk_vpd_ident */
1003 default:
1004 ccbh->status = CAM_FUNC_NOTAVAIL;
1005 break;
1006 }
1007 } else {
1008 bzero(rdata, rdata_len);
1009 if (rdata_len < SHORT_INQUIRY_LENGTH) {
1010 ccbh->status = CAM_CCB_LEN_ERR;
1011 break;
1012 }
1013 if (rdata_len > sizeof(rdata->inquiry_data))
1014 rdata_len = sizeof(rdata->inquiry_data);
1015 rdata->inquiry_data.device = T_DIRECT;
1016 rdata->inquiry_data.version = SCSI_REV_SPC2;
1017 rdata->inquiry_data.response_format = 2;
1018 rdata->inquiry_data.additional_length = 32;
1019 bcopy("SATA ", rdata->inquiry_data.vendor, 8);
1020 bcopy(at->at_identify.model,
1021 rdata->inquiry_data.product,
1022 sizeof(rdata->inquiry_data.product));
1023 bcopy(at->at_identify.firmware,
1024 rdata->inquiry_data.revision,
1025 sizeof(rdata->inquiry_data.revision));
1026 ccbh->status = CAM_REQ_CMP;
1027 }
1028 break;
1029 case READ_CAPACITY_16:
1030 if (cdb->read_capacity_16.service_action != SRC16_SERVICE_ACTION) {
1031 ccbh->status = CAM_REQ_INVALID;
1032 break;
1033 }
1034 if (rdata_len < sizeof(rdata->read_capacity_data_16)) {
1035 ccbh->status = CAM_CCB_LEN_ERR;
1036 break;
1037 }
1038 /* fall through */
1039 case READ_CAPACITY:
1040 if (rdata_len < sizeof(rdata->read_capacity_data)) {
1041 ccbh->status = CAM_CCB_LEN_ERR;
1042 break;
1043 }
1044
1045 capacity = at->at_capacity;
1046
1047 bzero(rdata, rdata_len);
1048 if (cdb->generic.opcode == READ_CAPACITY) {
1049 rdata_len = sizeof(rdata->read_capacity_data);
1050 if (capacity > 0xFFFFFFFFU)
1051 capacity = 0xFFFFFFFFU;
1052 bzero(&rdata->read_capacity_data, rdata_len);
1053 scsi_ulto4b((u_int32_t)capacity - 1,
1054 rdata->read_capacity_data.addr);
1055 scsi_ulto4b(512, rdata->read_capacity_data.length);
1056 } else {
1057 rdata_len = sizeof(rdata->read_capacity_data_16);
1058 bzero(&rdata->read_capacity_data_16, rdata_len);
1059 scsi_u64to8b(capacity - 1,
1060 rdata->read_capacity_data_16.addr);
1061 scsi_ulto4b(512, rdata->read_capacity_data_16.length);
1062 }
1063 ccbh->status = CAM_REQ_CMP;
1064 break;
1065 case SYNCHRONIZE_CACHE:
1066 /*
1067 * Synchronize cache. Specification says this can take
1068 * greater then 30 seconds so give it at least 45.
1069 */
1070 fis = xa->fis;
1071 fis->flags = ATA_H2D_FLAGS_CMD;
1072 fis->command = ATA_C_FLUSH_CACHE;
1073 fis->device = 0;
1074 if (xa->timeout < 45000)
1075 xa->timeout = 45000;
1076 xa->datalen = 0;
1077 xa->flags = ATA_F_READ;
1078 xa->complete = sili_ata_complete_disk_synchronize_cache;
1079 break;
1080 case TEST_UNIT_READY:
1081 case START_STOP_UNIT:
1082 case PREVENT_ALLOW:
1083 /*
1084 * Just silently return success
1085 */
1086 ccbh->status = CAM_REQ_CMP;
1087 rdata_len = 0;
1088 break;
1089 case ATA_PASS_12:
1090 case ATA_PASS_16:
1091 /*
1092 * XXX implement pass-through
1093 */
1094 ccbh->status = CAM_FUNC_NOTAVAIL;
1095 break;
1096 default:
1097 switch(cdb->generic.opcode) {
1098 case READ_6:
1099 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF;
1100 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100;
1101 xa->flags = ATA_F_READ;
1102 break;
1103 case READ_10:
1104 lba = scsi_4btoul(cdb->rw_10.addr);
1105 count = scsi_2btoul(cdb->rw_10.length);
1106 xa->flags = ATA_F_READ;
1107 break;
1108 case READ_12:
1109 lba = scsi_4btoul(cdb->rw_12.addr);
1110 count = scsi_4btoul(cdb->rw_12.length);
1111 xa->flags = ATA_F_READ;
1112 break;
1113 case READ_16:
1114 lba = scsi_8btou64(cdb->rw_16.addr);
1115 count = scsi_4btoul(cdb->rw_16.length);
1116 xa->flags = ATA_F_READ;
1117 break;
1118 case WRITE_6:
1119 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF;
1120 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100;
1121 xa->flags = ATA_F_WRITE;
1122 break;
1123 case WRITE_10:
1124 lba = scsi_4btoul(cdb->rw_10.addr);
1125 count = scsi_2btoul(cdb->rw_10.length);
1126 xa->flags = ATA_F_WRITE;
1127 break;
1128 case WRITE_12:
1129 lba = scsi_4btoul(cdb->rw_12.addr);
1130 count = scsi_4btoul(cdb->rw_12.length);
1131 xa->flags = ATA_F_WRITE;
1132 break;
1133 case WRITE_16:
1134 lba = scsi_8btou64(cdb->rw_16.addr);
1135 count = scsi_4btoul(cdb->rw_16.length);
1136 xa->flags = ATA_F_WRITE;
1137 break;
1138 default:
1139 ccbh->status = CAM_REQ_INVALID;
1140 break;
1141 }
1142 if (ccbh->status != CAM_REQ_INPROG)
1143 break;
1144
1145 fis = xa->fis;
1146 fis->flags = ATA_H2D_FLAGS_CMD;
1147 fis->lba_low = (u_int8_t)lba;
1148 fis->lba_mid = (u_int8_t)(lba >> 8);
1149 fis->lba_high = (u_int8_t)(lba >> 16);
1150 fis->device = ATA_H2D_DEVICE_LBA;
1151
1152 /*
1153 * NCQ only for direct-attached disks, do not currently
1154 * try to use NCQ with port multipliers.
1155 *
1156 * XXX fixme SII chip can do NCQ w/ port multipliers.
1157 */
1158 if (at->at_ncqdepth > 1 &&
1159 at->at_type == ATA_PORT_T_DISK &&
1160 (ap->ap_sc->sc_flags & SILI_F_NCQ) &&
1161 (ccbh->flags & CAM_POLLED) == 0) {
1162 /*
1163 * Use NCQ - always uses 48 bit addressing
1164 */
1165 xa->flags |= ATA_F_NCQ;
1166 fis->command = (xa->flags & ATA_F_WRITE) ?
1167 ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA;
1168 fis->lba_low_exp = (u_int8_t)(lba >> 24);
1169 fis->lba_mid_exp = (u_int8_t)(lba >> 32);
1170 fis->lba_high_exp = (u_int8_t)(lba >> 40);
1171 fis->sector_count = xa->tag << 3;
1172 fis->features = (u_int8_t)count;
1173 fis->features_exp = (u_int8_t)(count >> 8);
1174 } else if (count > 0x100 || lba > 0xFFFFFFFFU) {
1175 /*
1176 * Use LBA48
1177 */
1178 fis->command = (xa->flags & ATA_F_WRITE) ?
1179 ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT;
1180 fis->lba_low_exp = (u_int8_t)(lba >> 24);
1181 fis->lba_mid_exp = (u_int8_t)(lba >> 32);
1182 fis->lba_high_exp = (u_int8_t)(lba >> 40);
1183 fis->sector_count = (u_int8_t)count;
1184 fis->sector_count_exp = (u_int8_t)(count >> 8);
1185 } else {
1186 /*
1187 * Use LBA
1188 *
1189 * NOTE: 256 sectors is supported, stored as 0.
1190 */
1191 fis->command = (xa->flags & ATA_F_WRITE) ?
1192 ATA_C_WRITEDMA : ATA_C_READDMA;
1193 fis->device |= (u_int8_t)(lba >> 24) & 0x0F;
1194 fis->sector_count = (u_int8_t)count;
1195 }
1196
1197 xa->data = csio->data_ptr;
1198 xa->datalen = csio->dxfer_len;
1199 xa->complete = sili_ata_complete_disk_rw;
1200 xa->timeout = ccbh->timeout; /* milliseconds */
1201 if (ccbh->flags & CAM_POLLED)
1202 xa->flags |= ATA_F_POLL;
1203 break;
1204 }
1205
1206 /*
1207 * If the request is still in progress the xa and FIS have
1208 * been set up and must be dispatched. Otherwise the request
1209 * is complete.
1210 */
1211 if (ccbh->status == CAM_REQ_INPROG) {
1212 KKASSERT(xa->complete != NULL);
1213 xa->atascsi_private = ccb;
1214 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
1215 sili_os_lock_port(ap);
1216 fis->flags |= at->at_target;
1217 sili_ata_cmd(xa);
1218 sili_os_unlock_port(ap);
1219 } else {
1220 sili_ata_put_xfer(xa);
1221 xpt_done(ccb);
1222 }
1223}
1224
1225/*
1226 * Convert the SCSI command in ccb to an ata_xfer command in xa
1227 * for ATA_PORT_T_ATAPI operations. Set the completion function
1228 * to convert the response back, then dispatch to the OpenBSD SILI
1229 * layer.
1230 */
1231static
1232void
1233sili_xpt_scsi_atapi_io(struct sili_port *ap, struct ata_port *atx,
1234 union ccb *ccb)
1235{
1236 struct ccb_hdr *ccbh;
1237 struct ccb_scsiio *csio;
1238 struct ata_xfer *xa;
1239 struct ata_fis_h2d *fis;
1240 scsi_cdb_t cdbs;
1241 scsi_cdb_t cdbd;
1242 int flags;
1243 struct ata_port *at;
1244
1245 ccbh = &ccb->csio.ccb_h;
1246 csio = &ccb->csio;
1247 at = atx ? atx : &ap->ap_ata[0];
1248
1249 switch (ccbh->flags & CAM_DIR_MASK) {
1250 case CAM_DIR_IN:
1251 flags = ATA_F_PACKET | ATA_F_READ;
1252 break;
1253 case CAM_DIR_OUT:
1254 flags = ATA_F_PACKET | ATA_F_WRITE;
1255 break;
1256 case CAM_DIR_NONE:
1257 flags = ATA_F_PACKET;
1258 break;
1259 default:
1260 ccbh->status = CAM_REQ_INVALID;
1261 xpt_done(ccb);
1262 return;
1263 /* NOT REACHED */
1264 }
1265
1266 /*
4383d440
MD
1267 * Special handling to get the rfis back into host memory while
1268 * still allowing the Sili chip to run commands in parallel to
1269 * ATAPI devices behind a PM.
1270 */
1271 flags |= ATA_F_AUTOSENSE;
1272
1273 /*
1ac8d5ba
MD
1274 * The command has to fit in the packet command buffer.
1275 */
1276 if (csio->cdb_len < 6 || csio->cdb_len > 16) {
1277 ccbh->status = CAM_CCB_LEN_ERR;
1278 xpt_done(ccb);
1279 return;
1280 }
1281
1282 /*
1283 * Initialize the XA and FIS.
1284 *
1285 * XXX not passing NULL at for direct attach!
1286 */
1287 xa = sili_ata_get_xfer(ap, atx);
1288 fis = xa->fis;
1289
1290 fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
1291 fis->command = ATA_C_PACKET;
1292 fis->device = 0;
1293 fis->sector_count = xa->tag << 3;
1294 fis->features = ATA_H2D_FEATURES_DMA |
1295 ((flags & ATA_F_WRITE) ?
1296 ATA_H2D_FEATURES_DIR_WRITE : ATA_H2D_FEATURES_DIR_READ);
1297 fis->lba_mid = 0x00;
1298 fis->lba_high = 0x20;
1299
1300 xa->flags = flags;
1301 xa->data = csio->data_ptr;
1302 xa->datalen = csio->dxfer_len;
1303 xa->timeout = ccbh->timeout; /* milliseconds */
1304
1305 if (ccbh->flags & CAM_POLLED)
1306 xa->flags |= ATA_F_POLL;
1307
1308 /*
1309 * Copy the cdb to the packetcmd buffer in the FIS using a
1310 * convenient pointer in the xa.
1311 */
1312 cdbs = (void *)((ccbh->flags & CAM_CDB_POINTER) ?
1313 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes);
1314 bcopy(cdbs, xa->packetcmd, csio->cdb_len);
1315
1316#if 0
1317 kprintf("opcode %d cdb_len %d dxfer_len %d\n",
1318 cdbs->generic.opcode,
1319 csio->cdb_len, csio->dxfer_len);
1320#endif
1321
1322 /*
1323 * Some ATAPI commands do not actually follow the SCSI standard.
1324 */
1325 cdbd = (void *)xa->packetcmd;
1326
1327 switch(cdbd->generic.opcode) {
1328 case INQUIRY:
1329 /*
1330 * Some ATAPI devices can't handle SI_EVPD being set
1331 * for a basic inquiry (page_code == 0).
1332 *
1333 * Some ATAPI devices can't handle long inquiry lengths,
1334 * don't ask me why. Truncate the inquiry length.
1335 */
1336 if ((cdbd->inquiry.byte2 & SI_EVPD) &&
1337 cdbd->inquiry.page_code == 0) {
1338 cdbd->inquiry.byte2 &= ~SI_EVPD;
1339 }
1340 if (cdbd->inquiry.page_code == 0 &&
1341 cdbd->inquiry.length > SHORT_INQUIRY_LENGTH) {
1342 cdbd->inquiry.length = SHORT_INQUIRY_LENGTH;
1343 }
1344 break;
1345 case READ_6:
1346 case WRITE_6:
1347 /*
1348 * Convert *_6 to *_10 commands. Most ATAPI devices
1349 * cannot handle the SCSI READ_6 and WRITE_6 commands.
1350 */
1351 cdbd->rw_10.opcode |= 0x20;
1352 cdbd->rw_10.byte2 = 0;
1353 cdbd->rw_10.addr[0] = cdbs->rw_6.addr[0] & 0x1F;
1354 cdbd->rw_10.addr[1] = cdbs->rw_6.addr[1];
1355 cdbd->rw_10.addr[2] = cdbs->rw_6.addr[2];
1356 cdbd->rw_10.addr[3] = 0;
1357 cdbd->rw_10.reserved = 0;
1358 cdbd->rw_10.length[0] = 0;
1359 cdbd->rw_10.length[1] = cdbs->rw_6.length;
1360 cdbd->rw_10.control = cdbs->rw_6.control;
1361 break;
1362 default:
1363 break;
1364 }
1365
1366 /*
1367 * And dispatch
1368 */
1369 xa->complete = sili_atapi_complete_cmd;
1370 xa->atascsi_private = ccb;
1371 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
1372 sili_os_lock_port(ap);
1373 sili_ata_cmd(xa);
1374 sili_os_unlock_port(ap);
1375}
1376
1377/*
1378 * Completion function for ATA_PORT_T_DISK cache synchronization.
1379 */
1380static
1381void
1382sili_ata_complete_disk_synchronize_cache(struct ata_xfer *xa)
1383{
1384 union ccb *ccb = xa->atascsi_private;
1385 struct ccb_hdr *ccbh = &ccb->ccb_h;
1386 struct sili_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1387
1388 switch(xa->state) {
1389 case ATA_S_COMPLETE:
1390 ccbh->status = CAM_REQ_CMP;
1391 ccb->csio.scsi_status = SCSI_STATUS_OK;
1392 break;
1393 case ATA_S_ERROR:
1394 kprintf("%s: synchronize_cache: error\n",
1395 ATANAME(ap, xa->at));
1396 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
1397 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1398 sili_ata_dummy_sense(&ccb->csio.sense_data);
1399 break;
1400 case ATA_S_TIMEOUT:
1401 kprintf("%s: synchronize_cache: timeout\n",
1402 ATANAME(ap, xa->at));
1403 ccbh->status = CAM_CMD_TIMEOUT;
1404 break;
1405 default:
1406 kprintf("%s: synchronize_cache: unknown state %d\n",
1407 ATANAME(ap, xa->at), xa->state);
1408 ccbh->status = CAM_REQ_CMP_ERR;
1409 break;
1410 }
1411 sili_ata_put_xfer(xa);
1412 sili_os_unlock_port(ap);
1413 xpt_done(ccb);
1414 sili_os_lock_port(ap);
1415}
1416
1417/*
1418 * Completion function for ATA_PORT_T_DISK I/O
1419 */
1420static
1421void
1422sili_ata_complete_disk_rw(struct ata_xfer *xa)
1423{
1424 union ccb *ccb = xa->atascsi_private;
1425 struct ccb_hdr *ccbh = &ccb->ccb_h;
1426 struct sili_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1427
1428 switch(xa->state) {
1429 case ATA_S_COMPLETE:
1430 ccbh->status = CAM_REQ_CMP;
1431 ccb->csio.scsi_status = SCSI_STATUS_OK;
1432 break;
1433 case ATA_S_ERROR:
1434 kprintf("%s: disk_rw: error\n", ATANAME(ap, xa->at));
1435 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
1436 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1437 sili_ata_dummy_sense(&ccb->csio.sense_data);
1438 break;
1439 case ATA_S_TIMEOUT:
1440 kprintf("%s: disk_rw: timeout\n", ATANAME(ap, xa->at));
1441 ccbh->status = CAM_CMD_TIMEOUT;
1442 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1443 sili_ata_dummy_sense(&ccb->csio.sense_data);
1444 break;
1445 default:
1446 kprintf("%s: disk_rw: unknown state %d\n",
1447 ATANAME(ap, xa->at), xa->state);
1448 ccbh->status = CAM_REQ_CMP_ERR;
1449 break;
1450 }
1451 ccb->csio.resid = xa->resid;
1452 sili_ata_put_xfer(xa);
1453 sili_os_unlock_port(ap);
1454 xpt_done(ccb);
1455 sili_os_lock_port(ap);
1456}
1457
1458/*
1459 * Completion function for ATA_PORT_T_ATAPI I/O
1460 *
1461 * Sense data is returned in the rfis.
1462 */
1463static
1464void
1465sili_atapi_complete_cmd(struct ata_xfer *xa)
1466{
1467 union ccb *ccb = xa->atascsi_private;
1468 struct ccb_hdr *ccbh = &ccb->ccb_h;
1469 struct sili_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1470 scsi_cdb_t cdb;
1471
1472 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
1473 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes);
1474
1475 switch(xa->state) {
1476 case ATA_S_COMPLETE:
1477 ccbh->status = CAM_REQ_CMP;
1478 ccb->csio.scsi_status = SCSI_STATUS_OK;
1479 break;
1480 case ATA_S_ERROR:
1481 ccbh->status = CAM_SCSI_STATUS_ERROR;
1482 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1483 sili_ata_atapi_sense(xa->rfis, &ccb->csio.sense_data);
1484 break;
1485 case ATA_S_TIMEOUT:
1486 kprintf("%s: cmd %d: timeout\n",
1487 PORTNAME(ap), cdb->generic.opcode);
1488 ccbh->status = CAM_CMD_TIMEOUT;
1489 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1490 sili_ata_dummy_sense(&ccb->csio.sense_data);
1491 break;
1492 default:
1493 kprintf("%s: cmd %d: unknown state %d\n",
1494 PORTNAME(ap), cdb->generic.opcode, xa->state);
1495 ccbh->status = CAM_REQ_CMP_ERR;
1496 break;
1497 }
1498 ccb->csio.resid = xa->resid;
1499 sili_ata_put_xfer(xa);
1500 sili_os_unlock_port(ap);
1501 xpt_done(ccb);
1502 sili_os_lock_port(ap);
1503}
1504
1505/*
1506 * Construct dummy sense data for errors on DISKs
1507 */
1508static
1509void
1510sili_ata_dummy_sense(struct scsi_sense_data *sense_data)
1511{
1512 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR;
1513 sense_data->segment = 0;
1514 sense_data->flags = SSD_KEY_MEDIUM_ERROR;
1515 sense_data->info[0] = 0;
1516 sense_data->info[1] = 0;
1517 sense_data->info[2] = 0;
1518 sense_data->info[3] = 0;
1519 sense_data->extra_len = 0;
1520}
1521
1522/*
1523 * Construct atapi sense data for errors on ATAPI
1524 *
1525 * The ATAPI sense data is stored in the passed rfis and must be converted
1526 * to SCSI sense data.
1527 */
1528static
1529void
1530sili_ata_atapi_sense(struct ata_fis_d2h *rfis,
1531 struct scsi_sense_data *sense_data)
1532{
1533 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR;
1534 sense_data->segment = 0;
1535 sense_data->flags = (rfis->error & 0xF0) >> 4;
1536 if (rfis->error & 0x04)
1537 sense_data->flags |= SSD_KEY_ILLEGAL_REQUEST;
1538 if (rfis->error & 0x02)
1539 sense_data->flags |= SSD_EOM;
1540 if (rfis->error & 0x01)
1541 sense_data->flags |= SSD_ILI;
1542 sense_data->info[0] = 0;
1543 sense_data->info[1] = 0;
1544 sense_data->info[2] = 0;
1545 sense_data->info[3] = 0;
1546 sense_data->extra_len = 0;
1547}