xref: /freebsd/sys/dev/ata/ata-all.c (revision 84943d6f38e936ac3b7a3947ca26eeb27a39f938)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 1998 - 2008 Søren Schmidt <sos@FreeBSD.org>
5  * All rights reserved.
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  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer,
12  *    without modification, immediately at the beginning of the file.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/ata.h>
32 #include <sys/kernel.h>
33 #include <sys/module.h>
34 #include <sys/endian.h>
35 #include <sys/ctype.h>
36 #include <sys/conf.h>
37 #include <sys/bus.h>
38 #include <sys/bio.h>
39 #include <sys/malloc.h>
40 #include <sys/sysctl.h>
41 #include <sys/sema.h>
42 #include <sys/taskqueue.h>
43 #include <vm/uma.h>
44 #include <machine/stdarg.h>
45 #include <machine/resource.h>
46 #include <machine/bus.h>
47 #include <sys/rman.h>
48 #include <dev/ata/ata-all.h>
49 #include <dev/pci/pcivar.h>
50 #include <ata_if.h>
51 
52 #include <cam/cam.h>
53 #include <cam/cam_ccb.h>
54 #include <cam/cam_sim.h>
55 #include <cam/cam_xpt_sim.h>
56 #include <cam/cam_debug.h>
57 
58 /* prototypes */
59 static void ataaction(struct cam_sim *sim, union ccb *ccb);
60 static void atapoll(struct cam_sim *sim);
61 static void ata_cam_begin_transaction(device_t dev, union ccb *ccb);
62 static void ata_cam_end_transaction(device_t dev, struct ata_request *request);
63 static void ata_cam_request_sense(device_t dev, struct ata_request *request);
64 static int ata_check_ids(device_t dev, union ccb *ccb);
65 static void ata_conn_event(void *context, int dummy);
66 static void ata_interrupt_locked(void *data);
67 static int ata_module_event_handler(module_t mod, int what, void *arg);
68 static void ata_periodic_poll(void *data);
69 static int ata_str2mode(const char *str);
70 
71 /* global vars */
72 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer");
73 devclass_t ata_devclass;
74 int ata_dma_check_80pin = 1;
75 
76 /* sysctl vars */
77 static SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
78     "ATA driver parameters");
79 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma_check_80pin,
80 	   CTLFLAG_RWTUN, &ata_dma_check_80pin, 0,
81 	   "Check for 80pin cable before setting ATA DMA mode");
82 FEATURE(ata_cam, "ATA devices are accessed through the cam(4) driver");
83 
84 /*
85  * newbus device interface related functions
86  */
87 int
88 ata_probe(device_t dev)
89 {
90     return (BUS_PROBE_LOW_PRIORITY);
91 }
92 
93 int
94 ata_attach(device_t dev)
95 {
96     struct ata_channel *ch = device_get_softc(dev);
97     int error, rid;
98     struct cam_devq *devq;
99     const char *res;
100     char buf[64];
101     int i, mode;
102 
103     /* check that we have a virgin channel to attach */
104     if (ch->r_irq)
105 	return EEXIST;
106 
107     /* initialize the softc basics */
108     ch->dev = dev;
109     ch->state = ATA_IDLE;
110     bzero(&ch->state_mtx, sizeof(struct mtx));
111     mtx_init(&ch->state_mtx, "ATA state lock", NULL, MTX_DEF);
112     TASK_INIT(&ch->conntask, 0, ata_conn_event, dev);
113 	for (i = 0; i < 16; i++) {
114 		ch->user[i].revision = 0;
115 		snprintf(buf, sizeof(buf), "dev%d.sata_rev", i);
116 		if (resource_int_value(device_get_name(dev),
117 		    device_get_unit(dev), buf, &mode) != 0 &&
118 		    resource_int_value(device_get_name(dev),
119 		    device_get_unit(dev), "sata_rev", &mode) != 0)
120 			mode = -1;
121 		if (mode >= 0)
122 			ch->user[i].revision = mode;
123 		ch->user[i].mode = 0;
124 		snprintf(buf, sizeof(buf), "dev%d.mode", i);
125 		if (resource_string_value(device_get_name(dev),
126 		    device_get_unit(dev), buf, &res) == 0)
127 			mode = ata_str2mode(res);
128 		else if (resource_string_value(device_get_name(dev),
129 		    device_get_unit(dev), "mode", &res) == 0)
130 			mode = ata_str2mode(res);
131 		else
132 			mode = -1;
133 		if (mode >= 0)
134 			ch->user[i].mode = mode;
135 		if (ch->flags & ATA_SATA)
136 			ch->user[i].bytecount = 8192;
137 		else
138 			ch->user[i].bytecount = 65536;
139 		ch->user[i].caps = 0;
140 		ch->curr[i] = ch->user[i];
141 		if (ch->flags & ATA_SATA) {
142 			if (ch->pm_level > 0)
143 				ch->user[i].caps |= CTS_SATA_CAPS_H_PMREQ;
144 			if (ch->pm_level > 1)
145 				ch->user[i].caps |= CTS_SATA_CAPS_D_PMREQ;
146 		} else {
147 			if (!(ch->flags & ATA_NO_48BIT_DMA))
148 				ch->user[i].caps |= CTS_ATA_CAPS_H_DMA48;
149 		}
150 	}
151 	callout_init(&ch->poll_callout, 1);
152 
153     /* allocate DMA resources if DMA HW present*/
154     if (ch->dma.alloc)
155 	ch->dma.alloc(dev);
156 
157     /* setup interrupt delivery */
158     rid = ATA_IRQ_RID;
159     ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
160 				       RF_SHAREABLE | RF_ACTIVE);
161     if (!ch->r_irq) {
162 	device_printf(dev, "unable to allocate interrupt\n");
163 	return ENXIO;
164     }
165     if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
166 				ata_interrupt, ch, &ch->ih))) {
167 	bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
168 	device_printf(dev, "unable to setup interrupt\n");
169 	return error;
170     }
171 
172 	if (ch->flags & ATA_PERIODIC_POLL)
173 		callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
174 	mtx_lock(&ch->state_mtx);
175 	/* Create the device queue for our SIM. */
176 	devq = cam_simq_alloc(1);
177 	if (devq == NULL) {
178 		device_printf(dev, "Unable to allocate simq\n");
179 		error = ENOMEM;
180 		goto err1;
181 	}
182 	/* Construct SIM entry */
183 	ch->sim = cam_sim_alloc(ataaction, atapoll, "ata", ch,
184 	    device_get_unit(dev), &ch->state_mtx, 1, 0, devq);
185 	if (ch->sim == NULL) {
186 		device_printf(dev, "unable to allocate sim\n");
187 		cam_simq_free(devq);
188 		error = ENOMEM;
189 		goto err1;
190 	}
191 	if (xpt_bus_register(ch->sim, dev, 0) != CAM_SUCCESS) {
192 		device_printf(dev, "unable to register xpt bus\n");
193 		error = ENXIO;
194 		goto err2;
195 	}
196 	if (xpt_create_path(&ch->path, /*periph*/NULL, cam_sim_path(ch->sim),
197 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
198 		device_printf(dev, "unable to create path\n");
199 		error = ENXIO;
200 		goto err3;
201 	}
202 	mtx_unlock(&ch->state_mtx);
203 	return (0);
204 
205 err3:
206 	xpt_bus_deregister(cam_sim_path(ch->sim));
207 err2:
208 	cam_sim_free(ch->sim, /*free_devq*/TRUE);
209 	ch->sim = NULL;
210 err1:
211 	bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
212 	mtx_unlock(&ch->state_mtx);
213 	if (ch->flags & ATA_PERIODIC_POLL)
214 		callout_drain(&ch->poll_callout);
215 	return (error);
216 }
217 
218 int
219 ata_detach(device_t dev)
220 {
221     struct ata_channel *ch = device_get_softc(dev);
222 
223     /* check that we have a valid channel to detach */
224     if (!ch->r_irq)
225 	return ENXIO;
226 
227     /* grap the channel lock so no new requests gets launched */
228     mtx_lock(&ch->state_mtx);
229     ch->state |= ATA_STALL_QUEUE;
230     mtx_unlock(&ch->state_mtx);
231     if (ch->flags & ATA_PERIODIC_POLL)
232 	callout_drain(&ch->poll_callout);
233 
234     taskqueue_drain(taskqueue_thread, &ch->conntask);
235 
236 	mtx_lock(&ch->state_mtx);
237 	xpt_async(AC_LOST_DEVICE, ch->path, NULL);
238 	xpt_free_path(ch->path);
239 	xpt_bus_deregister(cam_sim_path(ch->sim));
240 	cam_sim_free(ch->sim, /*free_devq*/TRUE);
241 	ch->sim = NULL;
242 	mtx_unlock(&ch->state_mtx);
243 
244     /* release resources */
245     bus_teardown_intr(dev, ch->r_irq, ch->ih);
246     bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
247     ch->r_irq = NULL;
248 
249     /* free DMA resources if DMA HW present*/
250     if (ch->dma.free)
251 	ch->dma.free(dev);
252 
253     mtx_destroy(&ch->state_mtx);
254     return 0;
255 }
256 
257 static void
258 ata_conn_event(void *context, int dummy)
259 {
260 	device_t dev = (device_t)context;
261 	struct ata_channel *ch = device_get_softc(dev);
262 	union ccb *ccb;
263 
264 	mtx_lock(&ch->state_mtx);
265 	if (ch->sim == NULL) {
266 		mtx_unlock(&ch->state_mtx);
267 		return;
268 	}
269 	ata_reinit(dev);
270 	if ((ccb = xpt_alloc_ccb_nowait()) == NULL)
271 		return;
272 	if (xpt_create_path(&ccb->ccb_h.path, NULL,
273 	    cam_sim_path(ch->sim),
274 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
275 		xpt_free_ccb(ccb);
276 		return;
277 	}
278 	xpt_rescan(ccb);
279 	mtx_unlock(&ch->state_mtx);
280 }
281 
282 int
283 ata_reinit(device_t dev)
284 {
285     struct ata_channel *ch = device_get_softc(dev);
286     struct ata_request *request;
287 
288 	xpt_freeze_simq(ch->sim, 1);
289 	if ((request = ch->running)) {
290 		ch->running = NULL;
291 		if (ch->state == ATA_ACTIVE)
292 		    ch->state = ATA_IDLE;
293 		callout_stop(&request->callout);
294 		if (ch->dma.unload)
295 		    ch->dma.unload(request);
296 		request->result = ERESTART;
297 		ata_cam_end_transaction(dev, request);
298 	}
299 	/* reset the controller HW, the channel and device(s) */
300 	ATA_RESET(dev);
301 	/* Tell the XPT about the event */
302 	xpt_async(AC_BUS_RESET, ch->path, NULL);
303 	xpt_release_simq(ch->sim, TRUE);
304 	return(0);
305 }
306 
307 int
308 ata_suspend(device_t dev)
309 {
310     struct ata_channel *ch;
311 
312     /* check for valid device */
313     if (!dev || !(ch = device_get_softc(dev)))
314 	return ENXIO;
315 
316     if (ch->flags & ATA_PERIODIC_POLL)
317 	callout_drain(&ch->poll_callout);
318     mtx_lock(&ch->state_mtx);
319     xpt_freeze_simq(ch->sim, 1);
320     while (ch->state != ATA_IDLE)
321 	msleep(ch, &ch->state_mtx, PRIBIO, "atasusp", hz/100);
322     mtx_unlock(&ch->state_mtx);
323     return(0);
324 }
325 
326 int
327 ata_resume(device_t dev)
328 {
329     struct ata_channel *ch;
330     int error;
331 
332     /* check for valid device */
333     if (!dev || !(ch = device_get_softc(dev)))
334 	return ENXIO;
335 
336 	mtx_lock(&ch->state_mtx);
337 	error = ata_reinit(dev);
338 	xpt_release_simq(ch->sim, TRUE);
339 	mtx_unlock(&ch->state_mtx);
340 	if (ch->flags & ATA_PERIODIC_POLL)
341 		callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
342     return error;
343 }
344 
345 void
346 ata_interrupt(void *data)
347 {
348     struct ata_channel *ch = (struct ata_channel *)data;
349 
350     mtx_lock(&ch->state_mtx);
351     ata_interrupt_locked(data);
352     mtx_unlock(&ch->state_mtx);
353 }
354 
355 static void
356 ata_interrupt_locked(void *data)
357 {
358 	struct ata_channel *ch = (struct ata_channel *)data;
359 	struct ata_request *request;
360 
361 	/* ignore interrupt if its not for us */
362 	if (ch->hw.status && !ch->hw.status(ch->dev))
363 		return;
364 
365 	/* do we have a running request */
366 	if (!(request = ch->running))
367 		return;
368 
369 	ATA_DEBUG_RQ(request, "interrupt");
370 
371 	/* safetycheck for the right state */
372 	if (ch->state == ATA_IDLE) {
373 		device_printf(request->dev, "interrupt on idle channel ignored\n");
374 		return;
375 	}
376 
377 	/*
378 	 * we have the HW locks, so end the transaction for this request
379 	 * if it finishes immediately otherwise wait for next interrupt
380 	 */
381 	if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) {
382 		ch->running = NULL;
383 		if (ch->state == ATA_ACTIVE)
384 			ch->state = ATA_IDLE;
385 		ata_cam_end_transaction(ch->dev, request);
386 		return;
387 	}
388 }
389 
390 static void
391 ata_periodic_poll(void *data)
392 {
393     struct ata_channel *ch = (struct ata_channel *)data;
394 
395     callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
396     ata_interrupt(ch);
397 }
398 
399 void
400 ata_print_cable(device_t dev, u_int8_t *who)
401 {
402     device_printf(dev,
403                   "DMA limited to UDMA33, %s found non-ATA66 cable\n", who);
404 }
405 
406 /*
407  * misc support functions
408  */
409 void
410 ata_default_registers(device_t dev)
411 {
412     struct ata_channel *ch = device_get_softc(dev);
413 
414     /* fill in the defaults from whats setup already */
415     ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res;
416     ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset;
417     ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res;
418     ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset;
419     ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res;
420     ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset;
421     ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res;
422     ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset;
423 }
424 
425 void
426 ata_udelay(int interval)
427 {
428     /* for now just use DELAY, the timer/sleep subsystems are not there yet */
429     if (1 || interval < (1000000/hz))
430 	DELAY(interval);
431     else
432 	pause("ataslp", interval/(1000000/hz));
433 }
434 
435 const char *
436 ata_cmd2str(struct ata_request *request)
437 {
438 	static char buffer[20];
439 
440 	if (request->flags & ATA_R_ATAPI) {
441 		switch (request->u.atapi.sense.key ?
442 		    request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
443 		case 0x00: return ("TEST_UNIT_READY");
444 		case 0x01: return ("REZERO");
445 		case 0x03: return ("REQUEST_SENSE");
446 		case 0x04: return ("FORMAT");
447 		case 0x08: return ("READ");
448 		case 0x0a: return ("WRITE");
449 		case 0x10: return ("WEOF");
450 		case 0x11: return ("SPACE");
451 		case 0x12: return ("INQUIRY");
452 		case 0x15: return ("MODE_SELECT");
453 		case 0x19: return ("ERASE");
454 		case 0x1a: return ("MODE_SENSE");
455 		case 0x1b: return ("START_STOP");
456 		case 0x1e: return ("PREVENT_ALLOW");
457 		case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
458 		case 0x25: return ("READ_CAPACITY");
459 		case 0x28: return ("READ_BIG");
460 		case 0x2a: return ("WRITE_BIG");
461 		case 0x2b: return ("LOCATE");
462 		case 0x34: return ("READ_POSITION");
463 		case 0x35: return ("SYNCHRONIZE_CACHE");
464 		case 0x3b: return ("WRITE_BUFFER");
465 		case 0x3c: return ("READ_BUFFER");
466 		case 0x42: return ("READ_SUBCHANNEL");
467 		case 0x43: return ("READ_TOC");
468 		case 0x45: return ("PLAY_10");
469 		case 0x47: return ("PLAY_MSF");
470 		case 0x48: return ("PLAY_TRACK");
471 		case 0x4b: return ("PAUSE");
472 		case 0x51: return ("READ_DISK_INFO");
473 		case 0x52: return ("READ_TRACK_INFO");
474 		case 0x53: return ("RESERVE_TRACK");
475 		case 0x54: return ("SEND_OPC_INFO");
476 		case 0x55: return ("MODE_SELECT_BIG");
477 		case 0x58: return ("REPAIR_TRACK");
478 		case 0x59: return ("READ_MASTER_CUE");
479 		case 0x5a: return ("MODE_SENSE_BIG");
480 		case 0x5b: return ("CLOSE_TRACK/SESSION");
481 		case 0x5c: return ("READ_BUFFER_CAPACITY");
482 		case 0x5d: return ("SEND_CUE_SHEET");
483 		case 0x96: return ("SERVICE_ACTION_IN");
484 		case 0xa1: return ("BLANK_CMD");
485 		case 0xa3: return ("SEND_KEY");
486 		case 0xa4: return ("REPORT_KEY");
487 		case 0xa5: return ("PLAY_12");
488 		case 0xa6: return ("LOAD_UNLOAD");
489 		case 0xad: return ("READ_DVD_STRUCTURE");
490 		case 0xb4: return ("PLAY_CD");
491 		case 0xbb: return ("SET_SPEED");
492 		case 0xbd: return ("MECH_STATUS");
493 		case 0xbe: return ("READ_CD");
494 		case 0xff: return ("POLL_DSC");
495 		}
496 	} else {
497 		switch (request->u.ata.command) {
498 		case 0x00:
499 			switch (request->u.ata.feature) {
500 			case 0x00: return ("NOP FLUSHQUEUE");
501 			case 0x01: return ("NOP AUTOPOLL");
502 			}
503 			return ("NOP");
504 		case 0x03: return ("CFA_REQUEST_EXTENDED_ERROR");
505 		case 0x06:
506 			switch (request->u.ata.feature) {
507 			case 0x01: return ("DSM TRIM");
508 			}
509 			return "DSM";
510 		case 0x08: return ("DEVICE_RESET");
511 		case 0x20: return ("READ");
512 		case 0x24: return ("READ48");
513 		case 0x25: return ("READ_DMA48");
514 		case 0x26: return ("READ_DMA_QUEUED48");
515 		case 0x27: return ("READ_NATIVE_MAX_ADDRESS48");
516 		case 0x29: return ("READ_MUL48");
517 		case 0x2a: return ("READ_STREAM_DMA48");
518 		case 0x2b: return ("READ_STREAM48");
519 		case 0x2f: return ("READ_LOG_EXT");
520 		case 0x30: return ("WRITE");
521 		case 0x34: return ("WRITE48");
522 		case 0x35: return ("WRITE_DMA48");
523 		case 0x36: return ("WRITE_DMA_QUEUED48");
524 		case 0x37: return ("SET_MAX_ADDRESS48");
525 		case 0x39: return ("WRITE_MUL48");
526 		case 0x3a: return ("WRITE_STREAM_DMA48");
527 		case 0x3b: return ("WRITE_STREAM48");
528 		case 0x3d: return ("WRITE_DMA_FUA48");
529 		case 0x3e: return ("WRITE_DMA_QUEUED_FUA48");
530 		case 0x3f: return ("WRITE_LOG_EXT");
531 		case 0x40: return ("READ_VERIFY");
532 		case 0x42: return ("READ_VERIFY48");
533 		case 0x45:
534 			switch (request->u.ata.feature) {
535 			case 0x55: return ("WRITE_UNCORRECTABLE48 PSEUDO");
536 			case 0xaa: return ("WRITE_UNCORRECTABLE48 FLAGGED");
537 			}
538 			return "WRITE_UNCORRECTABLE48";
539 		case 0x51: return ("CONFIGURE_STREAM");
540 		case 0x60: return ("READ_FPDMA_QUEUED");
541 		case 0x61: return ("WRITE_FPDMA_QUEUED");
542 		case 0x63: return ("NCQ_NON_DATA");
543 		case 0x64: return ("SEND_FPDMA_QUEUED");
544 		case 0x65: return ("RECEIVE_FPDMA_QUEUED");
545 		case 0x67:
546 			if (request->u.ata.feature == 0xec)
547 				return ("SEP_ATTN IDENTIFY");
548 			switch (request->u.ata.lba) {
549 			case 0x00: return ("SEP_ATTN READ BUFFER");
550 			case 0x02: return ("SEP_ATTN RECEIVE DIAGNOSTIC RESULTS");
551 			case 0x80: return ("SEP_ATTN WRITE BUFFER");
552 			case 0x82: return ("SEP_ATTN SEND DIAGNOSTIC");
553 			}
554 			return ("SEP_ATTN");
555 		case 0x70: return ("SEEK");
556 		case 0x87: return ("CFA_TRANSLATE_SECTOR");
557 		case 0x90: return ("EXECUTE_DEVICE_DIAGNOSTIC");
558 		case 0x92: return ("DOWNLOAD_MICROCODE");
559 		case 0xa0: return ("PACKET");
560 		case 0xa1: return ("ATAPI_IDENTIFY");
561 		case 0xa2: return ("SERVICE");
562 		case 0xb0:
563 			switch(request->u.ata.feature) {
564 			case 0xd0: return ("SMART READ ATTR VALUES");
565 			case 0xd1: return ("SMART READ ATTR THRESHOLDS");
566 			case 0xd3: return ("SMART SAVE ATTR VALUES");
567 			case 0xd4: return ("SMART EXECUTE OFFLINE IMMEDIATE");
568 			case 0xd5: return ("SMART READ LOG DATA");
569 			case 0xd8: return ("SMART ENABLE OPERATION");
570 			case 0xd9: return ("SMART DISABLE OPERATION");
571 			case 0xda: return ("SMART RETURN STATUS");
572 			}
573 			return ("SMART");
574 		case 0xb1: return ("DEVICE CONFIGURATION");
575 		case 0xc0: return ("CFA_ERASE");
576 		case 0xc4: return ("READ_MUL");
577 		case 0xc5: return ("WRITE_MUL");
578 		case 0xc6: return ("SET_MULTI");
579 		case 0xc7: return ("READ_DMA_QUEUED");
580 		case 0xc8: return ("READ_DMA");
581 		case 0xca: return ("WRITE_DMA");
582 		case 0xcc: return ("WRITE_DMA_QUEUED");
583 		case 0xcd: return ("CFA_WRITE_MULTIPLE_WITHOUT_ERASE");
584 		case 0xce: return ("WRITE_MUL_FUA48");
585 		case 0xd1: return ("CHECK_MEDIA_CARD_TYPE");
586 		case 0xda: return ("GET_MEDIA_STATUS");
587 		case 0xde: return ("MEDIA_LOCK");
588 		case 0xdf: return ("MEDIA_UNLOCK");
589 		case 0xe0: return ("STANDBY_IMMEDIATE");
590 		case 0xe1: return ("IDLE_IMMEDIATE");
591 		case 0xe2: return ("STANDBY");
592 		case 0xe3: return ("IDLE");
593 		case 0xe4: return ("READ_BUFFER/PM");
594 		case 0xe5: return ("CHECK_POWER_MODE");
595 		case 0xe6: return ("SLEEP");
596 		case 0xe7: return ("FLUSHCACHE");
597 		case 0xe8: return ("WRITE_PM");
598 		case 0xea: return ("FLUSHCACHE48");
599 		case 0xec: return ("ATA_IDENTIFY");
600 		case 0xed: return ("MEDIA_EJECT");
601 		case 0xef:
602 			switch (request->u.ata.feature) {
603 			case 0x03: return ("SETFEATURES SET TRANSFER MODE");
604 			case 0x02: return ("SETFEATURES ENABLE WCACHE");
605 			case 0x82: return ("SETFEATURES DISABLE WCACHE");
606 			case 0x06: return ("SETFEATURES ENABLE PUIS");
607 			case 0x86: return ("SETFEATURES DISABLE PUIS");
608 			case 0x07: return ("SETFEATURES SPIN-UP");
609 			case 0x10: return ("SETFEATURES ENABLE SATA FEATURE");
610 			case 0x90: return ("SETFEATURES DISABLE SATA FEATURE");
611 			case 0xaa: return ("SETFEATURES ENABLE RCACHE");
612 			case 0x55: return ("SETFEATURES DISABLE RCACHE");
613 			case 0x5d: return ("SETFEATURES ENABLE RELIRQ");
614 			case 0xdd: return ("SETFEATURES DISABLE RELIRQ");
615 			case 0x5e: return ("SETFEATURES ENABLE SRVIRQ");
616 			case 0xde: return ("SETFEATURES DISABLE SRVIRQ");
617 			}
618 			return "SETFEATURES";
619 		case 0xf1: return ("SECURITY_SET_PASSWORD");
620 		case 0xf2: return ("SECURITY_UNLOCK");
621 		case 0xf3: return ("SECURITY_ERASE_PREPARE");
622 		case 0xf4: return ("SECURITY_ERASE_UNIT");
623 		case 0xf5: return ("SECURITY_FREEZE_LOCK");
624 		case 0xf6: return ("SECURITY_DISABLE_PASSWORD");
625 		case 0xf8: return ("READ_NATIVE_MAX_ADDRESS");
626 		case 0xf9: return ("SET_MAX_ADDRESS");
627 		}
628 	}
629 	sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
630 	return (buffer);
631 }
632 
633 const char *
634 ata_mode2str(int mode)
635 {
636     switch (mode) {
637     case -1: return "UNSUPPORTED";
638     case ATA_PIO0: return "PIO0";
639     case ATA_PIO1: return "PIO1";
640     case ATA_PIO2: return "PIO2";
641     case ATA_PIO3: return "PIO3";
642     case ATA_PIO4: return "PIO4";
643     case ATA_WDMA0: return "WDMA0";
644     case ATA_WDMA1: return "WDMA1";
645     case ATA_WDMA2: return "WDMA2";
646     case ATA_UDMA0: return "UDMA16";
647     case ATA_UDMA1: return "UDMA25";
648     case ATA_UDMA2: return "UDMA33";
649     case ATA_UDMA3: return "UDMA40";
650     case ATA_UDMA4: return "UDMA66";
651     case ATA_UDMA5: return "UDMA100";
652     case ATA_UDMA6: return "UDMA133";
653     case ATA_SA150: return "SATA150";
654     case ATA_SA300: return "SATA300";
655     case ATA_SA600: return "SATA600";
656     default:
657 	if (mode & ATA_DMA_MASK)
658 	    return "BIOSDMA";
659 	else
660 	    return "BIOSPIO";
661     }
662 }
663 
664 static int
665 ata_str2mode(const char *str)
666 {
667 
668 	if (!strcasecmp(str, "PIO0")) return (ATA_PIO0);
669 	if (!strcasecmp(str, "PIO1")) return (ATA_PIO1);
670 	if (!strcasecmp(str, "PIO2")) return (ATA_PIO2);
671 	if (!strcasecmp(str, "PIO3")) return (ATA_PIO3);
672 	if (!strcasecmp(str, "PIO4")) return (ATA_PIO4);
673 	if (!strcasecmp(str, "WDMA0")) return (ATA_WDMA0);
674 	if (!strcasecmp(str, "WDMA1")) return (ATA_WDMA1);
675 	if (!strcasecmp(str, "WDMA2")) return (ATA_WDMA2);
676 	if (!strcasecmp(str, "UDMA0")) return (ATA_UDMA0);
677 	if (!strcasecmp(str, "UDMA16")) return (ATA_UDMA0);
678 	if (!strcasecmp(str, "UDMA1")) return (ATA_UDMA1);
679 	if (!strcasecmp(str, "UDMA25")) return (ATA_UDMA1);
680 	if (!strcasecmp(str, "UDMA2")) return (ATA_UDMA2);
681 	if (!strcasecmp(str, "UDMA33")) return (ATA_UDMA2);
682 	if (!strcasecmp(str, "UDMA3")) return (ATA_UDMA3);
683 	if (!strcasecmp(str, "UDMA44")) return (ATA_UDMA3);
684 	if (!strcasecmp(str, "UDMA4")) return (ATA_UDMA4);
685 	if (!strcasecmp(str, "UDMA66")) return (ATA_UDMA4);
686 	if (!strcasecmp(str, "UDMA5")) return (ATA_UDMA5);
687 	if (!strcasecmp(str, "UDMA100")) return (ATA_UDMA5);
688 	if (!strcasecmp(str, "UDMA6")) return (ATA_UDMA6);
689 	if (!strcasecmp(str, "UDMA133")) return (ATA_UDMA6);
690 	return (-1);
691 }
692 
693 int
694 ata_atapi(device_t dev, int target)
695 {
696     struct ata_channel *ch = device_get_softc(dev);
697 
698     return (ch->devices & (ATA_ATAPI_MASTER << target));
699 }
700 
701 void
702 ata_timeout(void *arg)
703 {
704 	struct ata_request *request;
705 	struct ata_channel *ch;
706 
707 	request = arg;
708 	ch = device_get_softc(request->parent);
709 	//request->flags |= ATA_R_DEBUG;
710 	ATA_DEBUG_RQ(request, "timeout");
711 
712 	/*
713 	 * If we have an ATA_ACTIVE request running, we flag the request
714 	 * ATA_R_TIMEOUT so ata_cam_end_transaction() will handle it correctly.
715 	 * Also, NULL out the running request so we wont loose the race with
716 	 * an eventual interrupt arriving late.
717 	 */
718 	if (ch->state == ATA_ACTIVE) {
719 		request->flags |= ATA_R_TIMEOUT;
720 		if (ch->dma.unload)
721 			ch->dma.unload(request);
722 		ch->running = NULL;
723 		ch->state = ATA_IDLE;
724 		ata_cam_end_transaction(ch->dev, request);
725 	}
726 	mtx_unlock(&ch->state_mtx);
727 }
728 
729 static void
730 ata_cam_begin_transaction(device_t dev, union ccb *ccb)
731 {
732 	struct ata_channel *ch = device_get_softc(dev);
733 	struct ata_request *request;
734 
735 	request = &ch->request;
736 	bzero(request, sizeof(*request));
737 
738 	/* setup request */
739 	request->dev = NULL;
740 	request->parent = dev;
741 	request->unit = ccb->ccb_h.target_id;
742 	if (ccb->ccb_h.func_code == XPT_ATA_IO) {
743 		request->data = ccb->ataio.data_ptr;
744 		request->bytecount = ccb->ataio.dxfer_len;
745 		request->u.ata.command = ccb->ataio.cmd.command;
746 		request->u.ata.feature = ((uint16_t)ccb->ataio.cmd.features_exp << 8) |
747 					  (uint16_t)ccb->ataio.cmd.features;
748 		request->u.ata.count = ((uint16_t)ccb->ataio.cmd.sector_count_exp << 8) |
749 					(uint16_t)ccb->ataio.cmd.sector_count;
750 		if (ccb->ataio.cmd.flags & CAM_ATAIO_48BIT) {
751 			request->flags |= ATA_R_48BIT;
752 			request->u.ata.lba =
753 				     ((uint64_t)ccb->ataio.cmd.lba_high_exp << 40) |
754 				     ((uint64_t)ccb->ataio.cmd.lba_mid_exp << 32) |
755 				     ((uint64_t)ccb->ataio.cmd.lba_low_exp << 24);
756 		} else {
757 			request->u.ata.lba =
758 				     ((uint64_t)(ccb->ataio.cmd.device & 0x0f) << 24);
759 		}
760 		request->u.ata.lba |= ((uint64_t)ccb->ataio.cmd.lba_high << 16) |
761 				      ((uint64_t)ccb->ataio.cmd.lba_mid << 8) |
762 				       (uint64_t)ccb->ataio.cmd.lba_low;
763 		if (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT)
764 			request->flags |= ATA_R_NEEDRESULT;
765 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
766 		    ccb->ataio.cmd.flags & CAM_ATAIO_DMA)
767 			request->flags |= ATA_R_DMA;
768 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
769 			request->flags |= ATA_R_READ;
770 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
771 			request->flags |= ATA_R_WRITE;
772 		if (ccb->ataio.cmd.command == ATA_READ_MUL ||
773 		    ccb->ataio.cmd.command == ATA_READ_MUL48 ||
774 		    ccb->ataio.cmd.command == ATA_WRITE_MUL ||
775 		    ccb->ataio.cmd.command == ATA_WRITE_MUL48) {
776 			request->transfersize = min(request->bytecount,
777 			    ch->curr[ccb->ccb_h.target_id].bytecount);
778 		} else
779 			request->transfersize = min(request->bytecount, 512);
780 	} else {
781 		request->data = ccb->csio.data_ptr;
782 		request->bytecount = ccb->csio.dxfer_len;
783 		bcopy((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
784 		    ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes,
785 		    request->u.atapi.ccb, ccb->csio.cdb_len);
786 		request->flags |= ATA_R_ATAPI;
787 		if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
788 			request->flags |= ATA_R_ATAPI16;
789 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
790 		    ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
791 			request->flags |= ATA_R_DMA;
792 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
793 			request->flags |= ATA_R_READ;
794 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
795 			request->flags |= ATA_R_WRITE;
796 		request->transfersize = min(request->bytecount,
797 		    ch->curr[ccb->ccb_h.target_id].bytecount);
798 	}
799 	request->retries = 0;
800 	request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
801 	callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
802 	request->ccb = ccb;
803 	request->flags |= ATA_R_DATA_IN_CCB;
804 
805 	ch->running = request;
806 	ch->state = ATA_ACTIVE;
807 	if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
808 	    ch->running = NULL;
809 	    ch->state = ATA_IDLE;
810 	    ata_cam_end_transaction(dev, request);
811 	    return;
812 	}
813 }
814 
815 static void
816 ata_cam_request_sense(device_t dev, struct ata_request *request)
817 {
818 	struct ata_channel *ch = device_get_softc(dev);
819 	union ccb *ccb = request->ccb;
820 
821 	ch->requestsense = 1;
822 
823 	bzero(request, sizeof(*request));
824 	request->dev = NULL;
825 	request->parent = dev;
826 	request->unit = ccb->ccb_h.target_id;
827 	request->data = (void *)&ccb->csio.sense_data;
828 	request->bytecount = ccb->csio.sense_len;
829 	request->u.atapi.ccb[0] = ATAPI_REQUEST_SENSE;
830 	request->u.atapi.ccb[4] = ccb->csio.sense_len;
831 	request->flags |= ATA_R_ATAPI;
832 	if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
833 		request->flags |= ATA_R_ATAPI16;
834 	if (ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
835 		request->flags |= ATA_R_DMA;
836 	request->flags |= ATA_R_READ;
837 	request->transfersize = min(request->bytecount,
838 	    ch->curr[ccb->ccb_h.target_id].bytecount);
839 	request->retries = 0;
840 	request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
841 	callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
842 	request->ccb = ccb;
843 
844 	ch->running = request;
845 	ch->state = ATA_ACTIVE;
846 	if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
847 		ch->running = NULL;
848 		ch->state = ATA_IDLE;
849 		ata_cam_end_transaction(dev, request);
850 		return;
851 	}
852 }
853 
854 static void
855 ata_cam_process_sense(device_t dev, struct ata_request *request)
856 {
857 	struct ata_channel *ch = device_get_softc(dev);
858 	union ccb *ccb = request->ccb;
859 	int fatalerr = 0;
860 
861 	ch->requestsense = 0;
862 
863 	if (request->flags & ATA_R_TIMEOUT)
864 		fatalerr = 1;
865 	if ((request->flags & ATA_R_TIMEOUT) == 0 &&
866 	    (request->status & ATA_S_ERROR) == 0 &&
867 	    request->result == 0) {
868 		ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
869 	} else {
870 		ccb->ccb_h.status &= ~CAM_STATUS_MASK;
871 		ccb->ccb_h.status |= CAM_AUTOSENSE_FAIL;
872 	}
873 
874 	xpt_done(ccb);
875 	/* Do error recovery if needed. */
876 	if (fatalerr)
877 		ata_reinit(dev);
878 }
879 
880 static void
881 ata_cam_end_transaction(device_t dev, struct ata_request *request)
882 {
883 	struct ata_channel *ch = device_get_softc(dev);
884 	union ccb *ccb = request->ccb;
885 	int fatalerr = 0;
886 
887 	if (ch->requestsense) {
888 		ata_cam_process_sense(dev, request);
889 		return;
890 	}
891 
892 	ccb->ccb_h.status &= ~CAM_STATUS_MASK;
893 	if (request->flags & ATA_R_TIMEOUT) {
894 		xpt_freeze_simq(ch->sim, 1);
895 		ccb->ccb_h.status &= ~CAM_STATUS_MASK;
896 		ccb->ccb_h.status |= CAM_CMD_TIMEOUT | CAM_RELEASE_SIMQ;
897 		fatalerr = 1;
898 	} else if (request->status & ATA_S_ERROR) {
899 		if (ccb->ccb_h.func_code == XPT_ATA_IO) {
900 			ccb->ccb_h.status |= CAM_ATA_STATUS_ERROR;
901 		} else {
902 			ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
903 			ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
904 		}
905 	} else if (request->result == ERESTART)
906 		ccb->ccb_h.status |= CAM_REQUEUE_REQ;
907 	else if (request->result != 0)
908 		ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
909 	else
910 		ccb->ccb_h.status |= CAM_REQ_CMP;
911 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP &&
912 	    !(ccb->ccb_h.status & CAM_DEV_QFRZN)) {
913 		xpt_freeze_devq(ccb->ccb_h.path, 1);
914 		ccb->ccb_h.status |= CAM_DEV_QFRZN;
915 	}
916 	if (ccb->ccb_h.func_code == XPT_ATA_IO &&
917 	    ((request->status & ATA_S_ERROR) ||
918 	    (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT))) {
919 		struct ata_res *res = &ccb->ataio.res;
920 		res->status = request->status;
921 		res->error = request->error;
922 		res->lba_low = request->u.ata.lba;
923 		res->lba_mid = request->u.ata.lba >> 8;
924 		res->lba_high = request->u.ata.lba >> 16;
925 		res->device = request->u.ata.lba >> 24;
926 		res->lba_low_exp = request->u.ata.lba >> 24;
927 		res->lba_mid_exp = request->u.ata.lba >> 32;
928 		res->lba_high_exp = request->u.ata.lba >> 40;
929 		res->sector_count = request->u.ata.count;
930 		res->sector_count_exp = request->u.ata.count >> 8;
931 	}
932 	if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
933 		if (ccb->ccb_h.func_code == XPT_ATA_IO) {
934 			ccb->ataio.resid =
935 			    ccb->ataio.dxfer_len - request->donecount;
936 		} else {
937 			ccb->csio.resid =
938 			    ccb->csio.dxfer_len - request->donecount;
939 		}
940 	}
941 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR &&
942 	    (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
943 		ata_cam_request_sense(dev, request);
944 	else
945 		xpt_done(ccb);
946 	/* Do error recovery if needed. */
947 	if (fatalerr)
948 		ata_reinit(dev);
949 }
950 
951 static int
952 ata_check_ids(device_t dev, union ccb *ccb)
953 {
954 	struct ata_channel *ch = device_get_softc(dev);
955 
956 	if (ccb->ccb_h.target_id > ((ch->flags & ATA_NO_SLAVE) ? 0 : 1)) {
957 		ccb->ccb_h.status = CAM_TID_INVALID;
958 		xpt_done(ccb);
959 		return (-1);
960 	}
961 	if (ccb->ccb_h.target_lun != 0) {
962 		ccb->ccb_h.status = CAM_LUN_INVALID;
963 		xpt_done(ccb);
964 		return (-1);
965 	}
966 	/*
967 	 * It's a programming error to see AUXILIARY register requests.
968 	 */
969 	KASSERT(ccb->ccb_h.func_code != XPT_ATA_IO ||
970 	    ((ccb->ataio.ata_flags & ATA_FLAG_AUX) == 0),
971 	    ("AUX register unsupported"));
972 	return (0);
973 }
974 
975 static void
976 ataaction(struct cam_sim *sim, union ccb *ccb)
977 {
978 	device_t dev, parent;
979 	struct ata_channel *ch;
980 
981 	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ataaction func_code=%x\n",
982 	    ccb->ccb_h.func_code));
983 
984 	ch = (struct ata_channel *)cam_sim_softc(sim);
985 	dev = ch->dev;
986 	switch (ccb->ccb_h.func_code) {
987 	/* Common cases first */
988 	case XPT_ATA_IO:	/* Execute the requested I/O operation */
989 	case XPT_SCSI_IO:
990 		if (ata_check_ids(dev, ccb))
991 			return;
992 		if ((ch->devices & ((ATA_ATA_MASTER | ATA_ATAPI_MASTER)
993 		    << ccb->ccb_h.target_id)) == 0) {
994 			ccb->ccb_h.status = CAM_SEL_TIMEOUT;
995 			break;
996 		}
997 		if (ch->running)
998 			device_printf(dev, "already running!\n");
999 		if (ccb->ccb_h.func_code == XPT_ATA_IO &&
1000 		    (ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
1001 		    (ccb->ataio.cmd.control & ATA_A_RESET)) {
1002 			struct ata_res *res = &ccb->ataio.res;
1003 
1004 			bzero(res, sizeof(*res));
1005 			if (ch->devices & (ATA_ATA_MASTER << ccb->ccb_h.target_id)) {
1006 				res->lba_high = 0;
1007 				res->lba_mid = 0;
1008 			} else {
1009 				res->lba_high = 0xeb;
1010 				res->lba_mid = 0x14;
1011 			}
1012 			ccb->ccb_h.status = CAM_REQ_CMP;
1013 			break;
1014 		}
1015 		ata_cam_begin_transaction(dev, ccb);
1016 		return;
1017 	case XPT_ABORT:			/* Abort the specified CCB */
1018 		/* XXX Implement */
1019 		ccb->ccb_h.status = CAM_REQ_INVALID;
1020 		break;
1021 	case XPT_SET_TRAN_SETTINGS:
1022 	{
1023 		struct	ccb_trans_settings *cts = &ccb->cts;
1024 		struct	ata_cam_device *d;
1025 
1026 		if (ata_check_ids(dev, ccb))
1027 			return;
1028 		if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
1029 			d = &ch->curr[ccb->ccb_h.target_id];
1030 		else
1031 			d = &ch->user[ccb->ccb_h.target_id];
1032 		if (ch->flags & ATA_SATA) {
1033 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_REVISION)
1034 				d->revision = cts->xport_specific.sata.revision;
1035 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_MODE) {
1036 				if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1037 					d->mode = ATA_SETMODE(ch->dev,
1038 					    ccb->ccb_h.target_id,
1039 					    cts->xport_specific.sata.mode);
1040 				} else
1041 					d->mode = cts->xport_specific.sata.mode;
1042 			}
1043 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
1044 				d->bytecount = min(8192, cts->xport_specific.sata.bytecount);
1045 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_ATAPI)
1046 				d->atapi = cts->xport_specific.sata.atapi;
1047 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
1048 				d->caps = cts->xport_specific.sata.caps;
1049 		} else {
1050 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_MODE) {
1051 				if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1052 					d->mode = ATA_SETMODE(ch->dev,
1053 					    ccb->ccb_h.target_id,
1054 					    cts->xport_specific.ata.mode);
1055 				} else
1056 					d->mode = cts->xport_specific.ata.mode;
1057 			}
1058 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
1059 				d->bytecount = cts->xport_specific.ata.bytecount;
1060 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_ATAPI)
1061 				d->atapi = cts->xport_specific.ata.atapi;
1062 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_CAPS)
1063 				d->caps = cts->xport_specific.ata.caps;
1064 		}
1065 		ccb->ccb_h.status = CAM_REQ_CMP;
1066 		break;
1067 	}
1068 	case XPT_GET_TRAN_SETTINGS:
1069 	{
1070 		struct	ccb_trans_settings *cts = &ccb->cts;
1071 		struct  ata_cam_device *d;
1072 
1073 		if (ata_check_ids(dev, ccb))
1074 			return;
1075 		if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
1076 			d = &ch->curr[ccb->ccb_h.target_id];
1077 		else
1078 			d = &ch->user[ccb->ccb_h.target_id];
1079 		cts->protocol = PROTO_UNSPECIFIED;
1080 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
1081 		if (ch->flags & ATA_SATA) {
1082 			cts->transport = XPORT_SATA;
1083 			cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1084 			cts->xport_specific.sata.valid = 0;
1085 			cts->xport_specific.sata.mode = d->mode;
1086 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_MODE;
1087 			cts->xport_specific.sata.bytecount = d->bytecount;
1088 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_BYTECOUNT;
1089 			if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1090 				cts->xport_specific.sata.revision =
1091 				    ATA_GETREV(dev, ccb->ccb_h.target_id);
1092 				if (cts->xport_specific.sata.revision != 0xff) {
1093 					cts->xport_specific.sata.valid |=
1094 					    CTS_SATA_VALID_REVISION;
1095 				}
1096 				cts->xport_specific.sata.caps =
1097 				    d->caps & CTS_SATA_CAPS_D;
1098 				if (ch->pm_level) {
1099 					cts->xport_specific.sata.caps |=
1100 					    CTS_SATA_CAPS_H_PMREQ;
1101 				}
1102 				cts->xport_specific.sata.caps &=
1103 				    ch->user[ccb->ccb_h.target_id].caps;
1104 			} else {
1105 				cts->xport_specific.sata.revision = d->revision;
1106 				cts->xport_specific.sata.valid |= CTS_SATA_VALID_REVISION;
1107 				cts->xport_specific.sata.caps = d->caps;
1108 			}
1109 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_CAPS;
1110 			cts->xport_specific.sata.atapi = d->atapi;
1111 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_ATAPI;
1112 		} else {
1113 			cts->transport = XPORT_ATA;
1114 			cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1115 			cts->xport_specific.ata.valid = 0;
1116 			cts->xport_specific.ata.mode = d->mode;
1117 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_MODE;
1118 			cts->xport_specific.ata.bytecount = d->bytecount;
1119 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_BYTECOUNT;
1120 			if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1121 				cts->xport_specific.ata.caps =
1122 				    d->caps & CTS_ATA_CAPS_D;
1123 				if (!(ch->flags & ATA_NO_48BIT_DMA))
1124 					cts->xport_specific.ata.caps |=
1125 					    CTS_ATA_CAPS_H_DMA48;
1126 				cts->xport_specific.ata.caps &=
1127 				    ch->user[ccb->ccb_h.target_id].caps;
1128 			} else
1129 				cts->xport_specific.ata.caps = d->caps;
1130 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_CAPS;
1131 			cts->xport_specific.ata.atapi = d->atapi;
1132 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_ATAPI;
1133 		}
1134 		ccb->ccb_h.status = CAM_REQ_CMP;
1135 		break;
1136 	}
1137 	case XPT_RESET_BUS:		/* Reset the specified SCSI bus */
1138 	case XPT_RESET_DEV:	/* Bus Device Reset the specified SCSI device */
1139 		ata_reinit(dev);
1140 		ccb->ccb_h.status = CAM_REQ_CMP;
1141 		break;
1142 	case XPT_TERM_IO:		/* Terminate the I/O process */
1143 		/* XXX Implement */
1144 		ccb->ccb_h.status = CAM_REQ_INVALID;
1145 		break;
1146 	case XPT_PATH_INQ:		/* Path routing inquiry */
1147 	{
1148 		struct ccb_pathinq *cpi = &ccb->cpi;
1149 
1150 		parent = device_get_parent(dev);
1151 		cpi->version_num = 1; /* XXX??? */
1152 		cpi->hba_inquiry = PI_SDTR_ABLE;
1153 		cpi->target_sprt = 0;
1154 		cpi->hba_misc = PIM_SEQSCAN | PIM_UNMAPPED;
1155 		cpi->hba_eng_cnt = 0;
1156 		if (ch->flags & ATA_NO_SLAVE)
1157 			cpi->max_target = 0;
1158 		else
1159 			cpi->max_target = 1;
1160 		cpi->max_lun = 0;
1161 		cpi->initiator_id = 0;
1162 		cpi->bus_id = cam_sim_bus(sim);
1163 		if (ch->flags & ATA_SATA)
1164 			cpi->base_transfer_speed = 150000;
1165 		else
1166 			cpi->base_transfer_speed = 3300;
1167 		strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1168 		strlcpy(cpi->hba_vid, "ATA", HBA_IDLEN);
1169 		strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1170 		cpi->unit_number = cam_sim_unit(sim);
1171 		if (ch->flags & ATA_SATA)
1172 			cpi->transport = XPORT_SATA;
1173 		else
1174 			cpi->transport = XPORT_ATA;
1175 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
1176 		cpi->protocol = PROTO_ATA;
1177 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
1178 		cpi->maxio = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
1179 		if (device_get_devclass(device_get_parent(parent)) ==
1180 		    devclass_find("pci")) {
1181 			cpi->hba_vendor = pci_get_vendor(parent);
1182 			cpi->hba_device = pci_get_device(parent);
1183 			cpi->hba_subvendor = pci_get_subvendor(parent);
1184 			cpi->hba_subdevice = pci_get_subdevice(parent);
1185 		}
1186 		cpi->ccb_h.status = CAM_REQ_CMP;
1187 		break;
1188 	}
1189 	default:
1190 		ccb->ccb_h.status = CAM_REQ_INVALID;
1191 		break;
1192 	}
1193 	xpt_done(ccb);
1194 }
1195 
1196 static void
1197 atapoll(struct cam_sim *sim)
1198 {
1199 	struct ata_channel *ch = (struct ata_channel *)cam_sim_softc(sim);
1200 
1201 	ata_interrupt_locked(ch);
1202 }
1203 
1204 /*
1205  * module handeling
1206  */
1207 static int
1208 ata_module_event_handler(module_t mod, int what, void *arg)
1209 {
1210 
1211     switch (what) {
1212     case MOD_LOAD:
1213 	ata_devclass = devclass_find("ata");
1214 	return 0;
1215 
1216     case MOD_UNLOAD:
1217 	return 0;
1218 
1219     default:
1220 	return EOPNOTSUPP;
1221     }
1222 }
1223 
1224 static moduledata_t ata_moduledata = { "ata", ata_module_event_handler, NULL };
1225 DECLARE_MODULE(ata, ata_moduledata, SI_SUB_DRIVERS, SI_ORDER_ANY);
1226 MODULE_VERSION(ata, 1);
1227 MODULE_DEPEND(ata, cam, 1, 1, 1);
1228