xref: /freebsd/sys/dev/ata/ata-all.c (revision 405c3050f102b8c74782f0366c8ead927bd07b68)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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/cdefs.h>
30 __FBSDID("$FreeBSD$");
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/ata.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/endian.h>
38 #include <sys/ctype.h>
39 #include <sys/conf.h>
40 #include <sys/bus.h>
41 #include <sys/bio.h>
42 #include <sys/malloc.h>
43 #include <sys/sysctl.h>
44 #include <sys/sema.h>
45 #include <sys/taskqueue.h>
46 #include <vm/uma.h>
47 #include <machine/stdarg.h>
48 #include <machine/resource.h>
49 #include <machine/bus.h>
50 #include <sys/rman.h>
51 #include <dev/ata/ata-all.h>
52 #include <dev/pci/pcivar.h>
53 #include <ata_if.h>
54 
55 #include <cam/cam.h>
56 #include <cam/cam_ccb.h>
57 #include <cam/cam_sim.h>
58 #include <cam/cam_xpt_sim.h>
59 #include <cam/cam_debug.h>
60 
61 /* prototypes */
62 static void ataaction(struct cam_sim *sim, union ccb *ccb);
63 static void atapoll(struct cam_sim *sim);
64 static void ata_cam_begin_transaction(device_t dev, union ccb *ccb);
65 static void ata_cam_end_transaction(device_t dev, struct ata_request *request);
66 static void ata_cam_request_sense(device_t dev, struct ata_request *request);
67 static int ata_check_ids(device_t dev, union ccb *ccb);
68 static void ata_conn_event(void *context, int dummy);
69 static void ata_interrupt_locked(void *data);
70 static int ata_module_event_handler(module_t mod, int what, void *arg);
71 static void ata_periodic_poll(void *data);
72 static int ata_str2mode(const char *str);
73 
74 /* global vars */
75 MALLOC_DEFINE(M_ATA, "ata_generic", "ATA driver generic layer");
76 int (*ata_raid_ioctl_func)(u_long cmd, caddr_t data) = NULL;
77 devclass_t ata_devclass;
78 int ata_dma_check_80pin = 1;
79 
80 /* sysctl vars */
81 static SYSCTL_NODE(_hw, OID_AUTO, ata, CTLFLAG_RD, 0, "ATA driver parameters");
82 SYSCTL_INT(_hw_ata, OID_AUTO, ata_dma_check_80pin,
83 	   CTLFLAG_RWTUN, &ata_dma_check_80pin, 0,
84 	   "Check for 80pin cable before setting ATA DMA mode");
85 FEATURE(ata_cam, "ATA devices are accessed through the cam(4) driver");
86 
87 /*
88  * newbus device interface related functions
89  */
90 int
91 ata_probe(device_t dev)
92 {
93     return (BUS_PROBE_LOW_PRIORITY);
94 }
95 
96 int
97 ata_attach(device_t dev)
98 {
99     struct ata_channel *ch = device_get_softc(dev);
100     int error, rid;
101     struct cam_devq *devq;
102     const char *res;
103     char buf[64];
104     int i, mode;
105 
106     /* check that we have a virgin channel to attach */
107     if (ch->r_irq)
108 	return EEXIST;
109 
110     /* initialize the softc basics */
111     ch->dev = dev;
112     ch->state = ATA_IDLE;
113     bzero(&ch->state_mtx, sizeof(struct mtx));
114     mtx_init(&ch->state_mtx, "ATA state lock", NULL, MTX_DEF);
115     TASK_INIT(&ch->conntask, 0, ata_conn_event, dev);
116 	for (i = 0; i < 16; i++) {
117 		ch->user[i].revision = 0;
118 		snprintf(buf, sizeof(buf), "dev%d.sata_rev", i);
119 		if (resource_int_value(device_get_name(dev),
120 		    device_get_unit(dev), buf, &mode) != 0 &&
121 		    resource_int_value(device_get_name(dev),
122 		    device_get_unit(dev), "sata_rev", &mode) != 0)
123 			mode = -1;
124 		if (mode >= 0)
125 			ch->user[i].revision = mode;
126 		ch->user[i].mode = 0;
127 		snprintf(buf, sizeof(buf), "dev%d.mode", i);
128 		if (resource_string_value(device_get_name(dev),
129 		    device_get_unit(dev), buf, &res) == 0)
130 			mode = ata_str2mode(res);
131 		else if (resource_string_value(device_get_name(dev),
132 		    device_get_unit(dev), "mode", &res) == 0)
133 			mode = ata_str2mode(res);
134 		else
135 			mode = -1;
136 		if (mode >= 0)
137 			ch->user[i].mode = mode;
138 		if (ch->flags & ATA_SATA)
139 			ch->user[i].bytecount = 8192;
140 		else
141 			ch->user[i].bytecount = MAXPHYS;
142 		ch->user[i].caps = 0;
143 		ch->curr[i] = ch->user[i];
144 		if (ch->flags & ATA_SATA) {
145 			if (ch->pm_level > 0)
146 				ch->user[i].caps |= CTS_SATA_CAPS_H_PMREQ;
147 			if (ch->pm_level > 1)
148 				ch->user[i].caps |= CTS_SATA_CAPS_D_PMREQ;
149 		} else {
150 			if (!(ch->flags & ATA_NO_48BIT_DMA))
151 				ch->user[i].caps |= CTS_ATA_CAPS_H_DMA48;
152 		}
153 	}
154 	callout_init(&ch->poll_callout, 1);
155 
156     /* allocate DMA resources if DMA HW present*/
157     if (ch->dma.alloc)
158 	ch->dma.alloc(dev);
159 
160     /* setup interrupt delivery */
161     rid = ATA_IRQ_RID;
162     ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
163 				       RF_SHAREABLE | RF_ACTIVE);
164     if (!ch->r_irq) {
165 	device_printf(dev, "unable to allocate interrupt\n");
166 	return ENXIO;
167     }
168     if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS, NULL,
169 				ata_interrupt, ch, &ch->ih))) {
170 	bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
171 	device_printf(dev, "unable to setup interrupt\n");
172 	return error;
173     }
174 
175 	if (ch->flags & ATA_PERIODIC_POLL)
176 		callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
177 	mtx_lock(&ch->state_mtx);
178 	/* Create the device queue for our SIM. */
179 	devq = cam_simq_alloc(1);
180 	if (devq == NULL) {
181 		device_printf(dev, "Unable to allocate simq\n");
182 		error = ENOMEM;
183 		goto err1;
184 	}
185 	/* Construct SIM entry */
186 	ch->sim = cam_sim_alloc(ataaction, atapoll, "ata", ch,
187 	    device_get_unit(dev), &ch->state_mtx, 1, 0, devq);
188 	if (ch->sim == NULL) {
189 		device_printf(dev, "unable to allocate sim\n");
190 		cam_simq_free(devq);
191 		error = ENOMEM;
192 		goto err1;
193 	}
194 	if (xpt_bus_register(ch->sim, dev, 0) != CAM_SUCCESS) {
195 		device_printf(dev, "unable to register xpt bus\n");
196 		error = ENXIO;
197 		goto err2;
198 	}
199 	if (xpt_create_path(&ch->path, /*periph*/NULL, cam_sim_path(ch->sim),
200 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
201 		device_printf(dev, "unable to create path\n");
202 		error = ENXIO;
203 		goto err3;
204 	}
205 	mtx_unlock(&ch->state_mtx);
206 	return (0);
207 
208 err3:
209 	xpt_bus_deregister(cam_sim_path(ch->sim));
210 err2:
211 	cam_sim_free(ch->sim, /*free_devq*/TRUE);
212 	ch->sim = NULL;
213 err1:
214 	bus_release_resource(dev, SYS_RES_IRQ, rid, ch->r_irq);
215 	mtx_unlock(&ch->state_mtx);
216 	if (ch->flags & ATA_PERIODIC_POLL)
217 		callout_drain(&ch->poll_callout);
218 	return (error);
219 }
220 
221 int
222 ata_detach(device_t dev)
223 {
224     struct ata_channel *ch = device_get_softc(dev);
225 
226     /* check that we have a valid channel to detach */
227     if (!ch->r_irq)
228 	return ENXIO;
229 
230     /* grap the channel lock so no new requests gets launched */
231     mtx_lock(&ch->state_mtx);
232     ch->state |= ATA_STALL_QUEUE;
233     mtx_unlock(&ch->state_mtx);
234     if (ch->flags & ATA_PERIODIC_POLL)
235 	callout_drain(&ch->poll_callout);
236 
237     taskqueue_drain(taskqueue_thread, &ch->conntask);
238 
239 	mtx_lock(&ch->state_mtx);
240 	xpt_async(AC_LOST_DEVICE, ch->path, NULL);
241 	xpt_free_path(ch->path);
242 	xpt_bus_deregister(cam_sim_path(ch->sim));
243 	cam_sim_free(ch->sim, /*free_devq*/TRUE);
244 	ch->sim = NULL;
245 	mtx_unlock(&ch->state_mtx);
246 
247     /* release resources */
248     bus_teardown_intr(dev, ch->r_irq, ch->ih);
249     bus_release_resource(dev, SYS_RES_IRQ, ATA_IRQ_RID, ch->r_irq);
250     ch->r_irq = NULL;
251 
252     /* free DMA resources if DMA HW present*/
253     if (ch->dma.free)
254 	ch->dma.free(dev);
255 
256     mtx_destroy(&ch->state_mtx);
257     return 0;
258 }
259 
260 static void
261 ata_conn_event(void *context, int dummy)
262 {
263 	device_t dev = (device_t)context;
264 	struct ata_channel *ch = device_get_softc(dev);
265 	union ccb *ccb;
266 
267 	mtx_lock(&ch->state_mtx);
268 	if (ch->sim == NULL) {
269 		mtx_unlock(&ch->state_mtx);
270 		return;
271 	}
272 	ata_reinit(dev);
273 	if ((ccb = xpt_alloc_ccb_nowait()) == NULL)
274 		return;
275 	if (xpt_create_path(&ccb->ccb_h.path, NULL,
276 	    cam_sim_path(ch->sim),
277 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
278 		xpt_free_ccb(ccb);
279 		return;
280 	}
281 	xpt_rescan(ccb);
282 	mtx_unlock(&ch->state_mtx);
283 }
284 
285 int
286 ata_reinit(device_t dev)
287 {
288     struct ata_channel *ch = device_get_softc(dev);
289     struct ata_request *request;
290 
291 	xpt_freeze_simq(ch->sim, 1);
292 	if ((request = ch->running)) {
293 		ch->running = NULL;
294 		if (ch->state == ATA_ACTIVE)
295 		    ch->state = ATA_IDLE;
296 		callout_stop(&request->callout);
297 		if (ch->dma.unload)
298 		    ch->dma.unload(request);
299 		request->result = ERESTART;
300 		ata_cam_end_transaction(dev, request);
301 	}
302 	/* reset the controller HW, the channel and device(s) */
303 	ATA_RESET(dev);
304 	/* Tell the XPT about the event */
305 	xpt_async(AC_BUS_RESET, ch->path, NULL);
306 	xpt_release_simq(ch->sim, TRUE);
307 	return(0);
308 }
309 
310 int
311 ata_suspend(device_t dev)
312 {
313     struct ata_channel *ch;
314 
315     /* check for valid device */
316     if (!dev || !(ch = device_get_softc(dev)))
317 	return ENXIO;
318 
319     if (ch->flags & ATA_PERIODIC_POLL)
320 	callout_drain(&ch->poll_callout);
321     mtx_lock(&ch->state_mtx);
322     xpt_freeze_simq(ch->sim, 1);
323     while (ch->state != ATA_IDLE)
324 	msleep(ch, &ch->state_mtx, PRIBIO, "atasusp", hz/100);
325     mtx_unlock(&ch->state_mtx);
326     return(0);
327 }
328 
329 int
330 ata_resume(device_t dev)
331 {
332     struct ata_channel *ch;
333     int error;
334 
335     /* check for valid device */
336     if (!dev || !(ch = device_get_softc(dev)))
337 	return ENXIO;
338 
339 	mtx_lock(&ch->state_mtx);
340 	error = ata_reinit(dev);
341 	xpt_release_simq(ch->sim, TRUE);
342 	mtx_unlock(&ch->state_mtx);
343 	if (ch->flags & ATA_PERIODIC_POLL)
344 		callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
345     return error;
346 }
347 
348 void
349 ata_interrupt(void *data)
350 {
351     struct ata_channel *ch = (struct ata_channel *)data;
352 
353     mtx_lock(&ch->state_mtx);
354     ata_interrupt_locked(data);
355     mtx_unlock(&ch->state_mtx);
356 }
357 
358 static void
359 ata_interrupt_locked(void *data)
360 {
361 	struct ata_channel *ch = (struct ata_channel *)data;
362 	struct ata_request *request;
363 
364 	/* ignore interrupt if its not for us */
365 	if (ch->hw.status && !ch->hw.status(ch->dev))
366 		return;
367 
368 	/* do we have a running request */
369 	if (!(request = ch->running))
370 		return;
371 
372 	ATA_DEBUG_RQ(request, "interrupt");
373 
374 	/* safetycheck for the right state */
375 	if (ch->state == ATA_IDLE) {
376 		device_printf(request->dev, "interrupt on idle channel ignored\n");
377 		return;
378 	}
379 
380 	/*
381 	 * we have the HW locks, so end the transaction for this request
382 	 * if it finishes immediately otherwise wait for next interrupt
383 	 */
384 	if (ch->hw.end_transaction(request) == ATA_OP_FINISHED) {
385 		ch->running = NULL;
386 		if (ch->state == ATA_ACTIVE)
387 			ch->state = ATA_IDLE;
388 		ata_cam_end_transaction(ch->dev, request);
389 		return;
390 	}
391 }
392 
393 static void
394 ata_periodic_poll(void *data)
395 {
396     struct ata_channel *ch = (struct ata_channel *)data;
397 
398     callout_reset(&ch->poll_callout, hz, ata_periodic_poll, ch);
399     ata_interrupt(ch);
400 }
401 
402 void
403 ata_print_cable(device_t dev, u_int8_t *who)
404 {
405     device_printf(dev,
406                   "DMA limited to UDMA33, %s found non-ATA66 cable\n", who);
407 }
408 
409 /*
410  * misc support functions
411  */
412 void
413 ata_default_registers(device_t dev)
414 {
415     struct ata_channel *ch = device_get_softc(dev);
416 
417     /* fill in the defaults from whats setup already */
418     ch->r_io[ATA_ERROR].res = ch->r_io[ATA_FEATURE].res;
419     ch->r_io[ATA_ERROR].offset = ch->r_io[ATA_FEATURE].offset;
420     ch->r_io[ATA_IREASON].res = ch->r_io[ATA_COUNT].res;
421     ch->r_io[ATA_IREASON].offset = ch->r_io[ATA_COUNT].offset;
422     ch->r_io[ATA_STATUS].res = ch->r_io[ATA_COMMAND].res;
423     ch->r_io[ATA_STATUS].offset = ch->r_io[ATA_COMMAND].offset;
424     ch->r_io[ATA_ALTSTAT].res = ch->r_io[ATA_CONTROL].res;
425     ch->r_io[ATA_ALTSTAT].offset = ch->r_io[ATA_CONTROL].offset;
426 }
427 
428 void
429 ata_udelay(int interval)
430 {
431     /* for now just use DELAY, the timer/sleep subsystems are not there yet */
432     if (1 || interval < (1000000/hz) || ata_delayed_attach)
433 	DELAY(interval);
434     else
435 	pause("ataslp", interval/(1000000/hz));
436 }
437 
438 const char *
439 ata_cmd2str(struct ata_request *request)
440 {
441 	static char buffer[20];
442 
443 	if (request->flags & ATA_R_ATAPI) {
444 		switch (request->u.atapi.sense.key ?
445 		    request->u.atapi.saved_cmd : request->u.atapi.ccb[0]) {
446 		case 0x00: return ("TEST_UNIT_READY");
447 		case 0x01: return ("REZERO");
448 		case 0x03: return ("REQUEST_SENSE");
449 		case 0x04: return ("FORMAT");
450 		case 0x08: return ("READ");
451 		case 0x0a: return ("WRITE");
452 		case 0x10: return ("WEOF");
453 		case 0x11: return ("SPACE");
454 		case 0x12: return ("INQUIRY");
455 		case 0x15: return ("MODE_SELECT");
456 		case 0x19: return ("ERASE");
457 		case 0x1a: return ("MODE_SENSE");
458 		case 0x1b: return ("START_STOP");
459 		case 0x1e: return ("PREVENT_ALLOW");
460 		case 0x23: return ("ATAPI_READ_FORMAT_CAPACITIES");
461 		case 0x25: return ("READ_CAPACITY");
462 		case 0x28: return ("READ_BIG");
463 		case 0x2a: return ("WRITE_BIG");
464 		case 0x2b: return ("LOCATE");
465 		case 0x34: return ("READ_POSITION");
466 		case 0x35: return ("SYNCHRONIZE_CACHE");
467 		case 0x3b: return ("WRITE_BUFFER");
468 		case 0x3c: return ("READ_BUFFER");
469 		case 0x42: return ("READ_SUBCHANNEL");
470 		case 0x43: return ("READ_TOC");
471 		case 0x45: return ("PLAY_10");
472 		case 0x47: return ("PLAY_MSF");
473 		case 0x48: return ("PLAY_TRACK");
474 		case 0x4b: return ("PAUSE");
475 		case 0x51: return ("READ_DISK_INFO");
476 		case 0x52: return ("READ_TRACK_INFO");
477 		case 0x53: return ("RESERVE_TRACK");
478 		case 0x54: return ("SEND_OPC_INFO");
479 		case 0x55: return ("MODE_SELECT_BIG");
480 		case 0x58: return ("REPAIR_TRACK");
481 		case 0x59: return ("READ_MASTER_CUE");
482 		case 0x5a: return ("MODE_SENSE_BIG");
483 		case 0x5b: return ("CLOSE_TRACK/SESSION");
484 		case 0x5c: return ("READ_BUFFER_CAPACITY");
485 		case 0x5d: return ("SEND_CUE_SHEET");
486 		case 0x96: return ("SERVICE_ACTION_IN");
487 		case 0xa1: return ("BLANK_CMD");
488 		case 0xa3: return ("SEND_KEY");
489 		case 0xa4: return ("REPORT_KEY");
490 		case 0xa5: return ("PLAY_12");
491 		case 0xa6: return ("LOAD_UNLOAD");
492 		case 0xad: return ("READ_DVD_STRUCTURE");
493 		case 0xb4: return ("PLAY_CD");
494 		case 0xbb: return ("SET_SPEED");
495 		case 0xbd: return ("MECH_STATUS");
496 		case 0xbe: return ("READ_CD");
497 		case 0xff: return ("POLL_DSC");
498 		}
499 	} else {
500 		switch (request->u.ata.command) {
501 		case 0x00:
502 			switch (request->u.ata.feature) {
503 			case 0x00: return ("NOP FLUSHQUEUE");
504 			case 0x01: return ("NOP AUTOPOLL");
505 			}
506 			return ("NOP");
507 		case 0x03: return ("CFA_REQUEST_EXTENDED_ERROR");
508 		case 0x06:
509 			switch (request->u.ata.feature) {
510 			case 0x01: return ("DSM TRIM");
511 			}
512 			return "DSM";
513 		case 0x08: return ("DEVICE_RESET");
514 		case 0x20: return ("READ");
515 		case 0x24: return ("READ48");
516 		case 0x25: return ("READ_DMA48");
517 		case 0x26: return ("READ_DMA_QUEUED48");
518 		case 0x27: return ("READ_NATIVE_MAX_ADDRESS48");
519 		case 0x29: return ("READ_MUL48");
520 		case 0x2a: return ("READ_STREAM_DMA48");
521 		case 0x2b: return ("READ_STREAM48");
522 		case 0x2f: return ("READ_LOG_EXT");
523 		case 0x30: return ("WRITE");
524 		case 0x34: return ("WRITE48");
525 		case 0x35: return ("WRITE_DMA48");
526 		case 0x36: return ("WRITE_DMA_QUEUED48");
527 		case 0x37: return ("SET_MAX_ADDRESS48");
528 		case 0x39: return ("WRITE_MUL48");
529 		case 0x3a: return ("WRITE_STREAM_DMA48");
530 		case 0x3b: return ("WRITE_STREAM48");
531 		case 0x3d: return ("WRITE_DMA_FUA48");
532 		case 0x3e: return ("WRITE_DMA_QUEUED_FUA48");
533 		case 0x3f: return ("WRITE_LOG_EXT");
534 		case 0x40: return ("READ_VERIFY");
535 		case 0x42: return ("READ_VERIFY48");
536 		case 0x45:
537 			switch (request->u.ata.feature) {
538 			case 0x55: return ("WRITE_UNCORRECTABLE48 PSEUDO");
539 			case 0xaa: return ("WRITE_UNCORRECTABLE48 FLAGGED");
540 			}
541 			return "WRITE_UNCORRECTABLE48";
542 		case 0x51: return ("CONFIGURE_STREAM");
543 		case 0x60: return ("READ_FPDMA_QUEUED");
544 		case 0x61: return ("WRITE_FPDMA_QUEUED");
545 		case 0x63: return ("NCQ_NON_DATA");
546 		case 0x64: return ("SEND_FPDMA_QUEUED");
547 		case 0x65: return ("RECEIVE_FPDMA_QUEUED");
548 		case 0x67:
549 			if (request->u.ata.feature == 0xec)
550 				return ("SEP_ATTN IDENTIFY");
551 			switch (request->u.ata.lba) {
552 			case 0x00: return ("SEP_ATTN READ BUFFER");
553 			case 0x02: return ("SEP_ATTN RECEIVE DIAGNOSTIC RESULTS");
554 			case 0x80: return ("SEP_ATTN WRITE BUFFER");
555 			case 0x82: return ("SEP_ATTN SEND DIAGNOSTIC");
556 			}
557 			return ("SEP_ATTN");
558 		case 0x70: return ("SEEK");
559 		case 0x87: return ("CFA_TRANSLATE_SECTOR");
560 		case 0x90: return ("EXECUTE_DEVICE_DIAGNOSTIC");
561 		case 0x92: return ("DOWNLOAD_MICROCODE");
562 		case 0xa0: return ("PACKET");
563 		case 0xa1: return ("ATAPI_IDENTIFY");
564 		case 0xa2: return ("SERVICE");
565 		case 0xb0:
566 			switch(request->u.ata.feature) {
567 			case 0xd0: return ("SMART READ ATTR VALUES");
568 			case 0xd1: return ("SMART READ ATTR THRESHOLDS");
569 			case 0xd3: return ("SMART SAVE ATTR VALUES");
570 			case 0xd4: return ("SMART EXECUTE OFFLINE IMMEDIATE");
571 			case 0xd5: return ("SMART READ LOG DATA");
572 			case 0xd8: return ("SMART ENABLE OPERATION");
573 			case 0xd9: return ("SMART DISABLE OPERATION");
574 			case 0xda: return ("SMART RETURN STATUS");
575 			}
576 			return ("SMART");
577 		case 0xb1: return ("DEVICE CONFIGURATION");
578 		case 0xc0: return ("CFA_ERASE");
579 		case 0xc4: return ("READ_MUL");
580 		case 0xc5: return ("WRITE_MUL");
581 		case 0xc6: return ("SET_MULTI");
582 		case 0xc7: return ("READ_DMA_QUEUED");
583 		case 0xc8: return ("READ_DMA");
584 		case 0xca: return ("WRITE_DMA");
585 		case 0xcc: return ("WRITE_DMA_QUEUED");
586 		case 0xcd: return ("CFA_WRITE_MULTIPLE_WITHOUT_ERASE");
587 		case 0xce: return ("WRITE_MUL_FUA48");
588 		case 0xd1: return ("CHECK_MEDIA_CARD_TYPE");
589 		case 0xda: return ("GET_MEDIA_STATUS");
590 		case 0xde: return ("MEDIA_LOCK");
591 		case 0xdf: return ("MEDIA_UNLOCK");
592 		case 0xe0: return ("STANDBY_IMMEDIATE");
593 		case 0xe1: return ("IDLE_IMMEDIATE");
594 		case 0xe2: return ("STANDBY");
595 		case 0xe3: return ("IDLE");
596 		case 0xe4: return ("READ_BUFFER/PM");
597 		case 0xe5: return ("CHECK_POWER_MODE");
598 		case 0xe6: return ("SLEEP");
599 		case 0xe7: return ("FLUSHCACHE");
600 		case 0xe8: return ("WRITE_PM");
601 		case 0xea: return ("FLUSHCACHE48");
602 		case 0xec: return ("ATA_IDENTIFY");
603 		case 0xed: return ("MEDIA_EJECT");
604 		case 0xef:
605 			switch (request->u.ata.feature) {
606 			case 0x03: return ("SETFEATURES SET TRANSFER MODE");
607 			case 0x02: return ("SETFEATURES ENABLE WCACHE");
608 			case 0x82: return ("SETFEATURES DISABLE WCACHE");
609 			case 0x06: return ("SETFEATURES ENABLE PUIS");
610 			case 0x86: return ("SETFEATURES DISABLE PUIS");
611 			case 0x07: return ("SETFEATURES SPIN-UP");
612 			case 0x10: return ("SETFEATURES ENABLE SATA FEATURE");
613 			case 0x90: return ("SETFEATURES DISABLE SATA FEATURE");
614 			case 0xaa: return ("SETFEATURES ENABLE RCACHE");
615 			case 0x55: return ("SETFEATURES DISABLE RCACHE");
616 			case 0x5d: return ("SETFEATURES ENABLE RELIRQ");
617 			case 0xdd: return ("SETFEATURES DISABLE RELIRQ");
618 			case 0x5e: return ("SETFEATURES ENABLE SRVIRQ");
619 			case 0xde: return ("SETFEATURES DISABLE SRVIRQ");
620 			}
621 			return "SETFEATURES";
622 		case 0xf1: return ("SECURITY_SET_PASSWORD");
623 		case 0xf2: return ("SECURITY_UNLOCK");
624 		case 0xf3: return ("SECURITY_ERASE_PREPARE");
625 		case 0xf4: return ("SECURITY_ERASE_UNIT");
626 		case 0xf5: return ("SECURITY_FREEZE_LOCK");
627 		case 0xf6: return ("SECURITY_DISABLE_PASSWORD");
628 		case 0xf8: return ("READ_NATIVE_MAX_ADDRESS");
629 		case 0xf9: return ("SET_MAX_ADDRESS");
630 		}
631 	}
632 	sprintf(buffer, "unknown CMD (0x%02x)", request->u.ata.command);
633 	return (buffer);
634 }
635 
636 const char *
637 ata_mode2str(int mode)
638 {
639     switch (mode) {
640     case -1: return "UNSUPPORTED";
641     case ATA_PIO0: return "PIO0";
642     case ATA_PIO1: return "PIO1";
643     case ATA_PIO2: return "PIO2";
644     case ATA_PIO3: return "PIO3";
645     case ATA_PIO4: return "PIO4";
646     case ATA_WDMA0: return "WDMA0";
647     case ATA_WDMA1: return "WDMA1";
648     case ATA_WDMA2: return "WDMA2";
649     case ATA_UDMA0: return "UDMA16";
650     case ATA_UDMA1: return "UDMA25";
651     case ATA_UDMA2: return "UDMA33";
652     case ATA_UDMA3: return "UDMA40";
653     case ATA_UDMA4: return "UDMA66";
654     case ATA_UDMA5: return "UDMA100";
655     case ATA_UDMA6: return "UDMA133";
656     case ATA_SA150: return "SATA150";
657     case ATA_SA300: return "SATA300";
658     case ATA_SA600: return "SATA600";
659     default:
660 	if (mode & ATA_DMA_MASK)
661 	    return "BIOSDMA";
662 	else
663 	    return "BIOSPIO";
664     }
665 }
666 
667 static int
668 ata_str2mode(const char *str)
669 {
670 
671 	if (!strcasecmp(str, "PIO0")) return (ATA_PIO0);
672 	if (!strcasecmp(str, "PIO1")) return (ATA_PIO1);
673 	if (!strcasecmp(str, "PIO2")) return (ATA_PIO2);
674 	if (!strcasecmp(str, "PIO3")) return (ATA_PIO3);
675 	if (!strcasecmp(str, "PIO4")) return (ATA_PIO4);
676 	if (!strcasecmp(str, "WDMA0")) return (ATA_WDMA0);
677 	if (!strcasecmp(str, "WDMA1")) return (ATA_WDMA1);
678 	if (!strcasecmp(str, "WDMA2")) return (ATA_WDMA2);
679 	if (!strcasecmp(str, "UDMA0")) return (ATA_UDMA0);
680 	if (!strcasecmp(str, "UDMA16")) return (ATA_UDMA0);
681 	if (!strcasecmp(str, "UDMA1")) return (ATA_UDMA1);
682 	if (!strcasecmp(str, "UDMA25")) return (ATA_UDMA1);
683 	if (!strcasecmp(str, "UDMA2")) return (ATA_UDMA2);
684 	if (!strcasecmp(str, "UDMA33")) return (ATA_UDMA2);
685 	if (!strcasecmp(str, "UDMA3")) return (ATA_UDMA3);
686 	if (!strcasecmp(str, "UDMA44")) return (ATA_UDMA3);
687 	if (!strcasecmp(str, "UDMA4")) return (ATA_UDMA4);
688 	if (!strcasecmp(str, "UDMA66")) return (ATA_UDMA4);
689 	if (!strcasecmp(str, "UDMA5")) return (ATA_UDMA5);
690 	if (!strcasecmp(str, "UDMA100")) return (ATA_UDMA5);
691 	if (!strcasecmp(str, "UDMA6")) return (ATA_UDMA6);
692 	if (!strcasecmp(str, "UDMA133")) return (ATA_UDMA6);
693 	return (-1);
694 }
695 
696 int
697 ata_atapi(device_t dev, int target)
698 {
699     struct ata_channel *ch = device_get_softc(dev);
700 
701     return (ch->devices & (ATA_ATAPI_MASTER << target));
702 }
703 
704 void
705 ata_timeout(struct ata_request *request)
706 {
707 	struct ata_channel *ch;
708 
709 	ch = device_get_softc(request->parent);
710 	//request->flags |= ATA_R_DEBUG;
711 	ATA_DEBUG_RQ(request, "timeout");
712 
713 	/*
714 	 * If we have an ATA_ACTIVE request running, we flag the request
715 	 * ATA_R_TIMEOUT so ata_cam_end_transaction() will handle it correctly.
716 	 * Also, NULL out the running request so we wont loose the race with
717 	 * an eventual interrupt arriving late.
718 	 */
719 	if (ch->state == ATA_ACTIVE) {
720 		request->flags |= ATA_R_TIMEOUT;
721 		if (ch->dma.unload)
722 			ch->dma.unload(request);
723 		ch->running = NULL;
724 		ch->state = ATA_IDLE;
725 		ata_cam_end_transaction(ch->dev, request);
726 	}
727 	mtx_unlock(&ch->state_mtx);
728 }
729 
730 static void
731 ata_cam_begin_transaction(device_t dev, union ccb *ccb)
732 {
733 	struct ata_channel *ch = device_get_softc(dev);
734 	struct ata_request *request;
735 
736 	request = &ch->request;
737 	bzero(request, sizeof(*request));
738 
739 	/* setup request */
740 	request->dev = NULL;
741 	request->parent = dev;
742 	request->unit = ccb->ccb_h.target_id;
743 	if (ccb->ccb_h.func_code == XPT_ATA_IO) {
744 		request->data = ccb->ataio.data_ptr;
745 		request->bytecount = ccb->ataio.dxfer_len;
746 		request->u.ata.command = ccb->ataio.cmd.command;
747 		request->u.ata.feature = ((uint16_t)ccb->ataio.cmd.features_exp << 8) |
748 					  (uint16_t)ccb->ataio.cmd.features;
749 		request->u.ata.count = ((uint16_t)ccb->ataio.cmd.sector_count_exp << 8) |
750 					(uint16_t)ccb->ataio.cmd.sector_count;
751 		if (ccb->ataio.cmd.flags & CAM_ATAIO_48BIT) {
752 			request->flags |= ATA_R_48BIT;
753 			request->u.ata.lba =
754 				     ((uint64_t)ccb->ataio.cmd.lba_high_exp << 40) |
755 				     ((uint64_t)ccb->ataio.cmd.lba_mid_exp << 32) |
756 				     ((uint64_t)ccb->ataio.cmd.lba_low_exp << 24);
757 		} else {
758 			request->u.ata.lba =
759 				     ((uint64_t)(ccb->ataio.cmd.device & 0x0f) << 24);
760 		}
761 		request->u.ata.lba |= ((uint64_t)ccb->ataio.cmd.lba_high << 16) |
762 				      ((uint64_t)ccb->ataio.cmd.lba_mid << 8) |
763 				       (uint64_t)ccb->ataio.cmd.lba_low;
764 		if (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT)
765 			request->flags |= ATA_R_NEEDRESULT;
766 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
767 		    ccb->ataio.cmd.flags & CAM_ATAIO_DMA)
768 			request->flags |= ATA_R_DMA;
769 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
770 			request->flags |= ATA_R_READ;
771 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
772 			request->flags |= ATA_R_WRITE;
773 		if (ccb->ataio.cmd.command == ATA_READ_MUL ||
774 		    ccb->ataio.cmd.command == ATA_READ_MUL48 ||
775 		    ccb->ataio.cmd.command == ATA_WRITE_MUL ||
776 		    ccb->ataio.cmd.command == ATA_WRITE_MUL48) {
777 			request->transfersize = min(request->bytecount,
778 			    ch->curr[ccb->ccb_h.target_id].bytecount);
779 		} else
780 			request->transfersize = min(request->bytecount, 512);
781 	} else {
782 		request->data = ccb->csio.data_ptr;
783 		request->bytecount = ccb->csio.dxfer_len;
784 		bcopy((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
785 		    ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes,
786 		    request->u.atapi.ccb, ccb->csio.cdb_len);
787 		request->flags |= ATA_R_ATAPI;
788 		if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
789 			request->flags |= ATA_R_ATAPI16;
790 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE &&
791 		    ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
792 			request->flags |= ATA_R_DMA;
793 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
794 			request->flags |= ATA_R_READ;
795 		if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT)
796 			request->flags |= ATA_R_WRITE;
797 		request->transfersize = min(request->bytecount,
798 		    ch->curr[ccb->ccb_h.target_id].bytecount);
799 	}
800 	request->retries = 0;
801 	request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
802 	callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
803 	request->ccb = ccb;
804 	request->flags |= ATA_R_DATA_IN_CCB;
805 
806 	ch->running = request;
807 	ch->state = ATA_ACTIVE;
808 	if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
809 	    ch->running = NULL;
810 	    ch->state = ATA_IDLE;
811 	    ata_cam_end_transaction(dev, request);
812 	    return;
813 	}
814 }
815 
816 static void
817 ata_cam_request_sense(device_t dev, struct ata_request *request)
818 {
819 	struct ata_channel *ch = device_get_softc(dev);
820 	union ccb *ccb = request->ccb;
821 
822 	ch->requestsense = 1;
823 
824 	bzero(request, sizeof(*request));
825 	request->dev = NULL;
826 	request->parent = dev;
827 	request->unit = ccb->ccb_h.target_id;
828 	request->data = (void *)&ccb->csio.sense_data;
829 	request->bytecount = ccb->csio.sense_len;
830 	request->u.atapi.ccb[0] = ATAPI_REQUEST_SENSE;
831 	request->u.atapi.ccb[4] = ccb->csio.sense_len;
832 	request->flags |= ATA_R_ATAPI;
833 	if (ch->curr[ccb->ccb_h.target_id].atapi == 16)
834 		request->flags |= ATA_R_ATAPI16;
835 	if (ch->curr[ccb->ccb_h.target_id].mode >= ATA_DMA)
836 		request->flags |= ATA_R_DMA;
837 	request->flags |= ATA_R_READ;
838 	request->transfersize = min(request->bytecount,
839 	    ch->curr[ccb->ccb_h.target_id].bytecount);
840 	request->retries = 0;
841 	request->timeout = (ccb->ccb_h.timeout + 999) / 1000;
842 	callout_init_mtx(&request->callout, &ch->state_mtx, CALLOUT_RETURNUNLOCKED);
843 	request->ccb = ccb;
844 
845 	ch->running = request;
846 	ch->state = ATA_ACTIVE;
847 	if (ch->hw.begin_transaction(request) == ATA_OP_FINISHED) {
848 		ch->running = NULL;
849 		ch->state = ATA_IDLE;
850 		ata_cam_end_transaction(dev, request);
851 		return;
852 	}
853 }
854 
855 static void
856 ata_cam_process_sense(device_t dev, struct ata_request *request)
857 {
858 	struct ata_channel *ch = device_get_softc(dev);
859 	union ccb *ccb = request->ccb;
860 	int fatalerr = 0;
861 
862 	ch->requestsense = 0;
863 
864 	if (request->flags & ATA_R_TIMEOUT)
865 		fatalerr = 1;
866 	if ((request->flags & ATA_R_TIMEOUT) == 0 &&
867 	    (request->status & ATA_S_ERROR) == 0 &&
868 	    request->result == 0) {
869 		ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
870 	} else {
871 		ccb->ccb_h.status &= ~CAM_STATUS_MASK;
872 		ccb->ccb_h.status |= CAM_AUTOSENSE_FAIL;
873 	}
874 
875 	xpt_done(ccb);
876 	/* Do error recovery if needed. */
877 	if (fatalerr)
878 		ata_reinit(dev);
879 }
880 
881 static void
882 ata_cam_end_transaction(device_t dev, struct ata_request *request)
883 {
884 	struct ata_channel *ch = device_get_softc(dev);
885 	union ccb *ccb = request->ccb;
886 	int fatalerr = 0;
887 
888 	if (ch->requestsense) {
889 		ata_cam_process_sense(dev, request);
890 		return;
891 	}
892 
893 	ccb->ccb_h.status &= ~CAM_STATUS_MASK;
894 	if (request->flags & ATA_R_TIMEOUT) {
895 		xpt_freeze_simq(ch->sim, 1);
896 		ccb->ccb_h.status &= ~CAM_STATUS_MASK;
897 		ccb->ccb_h.status |= CAM_CMD_TIMEOUT | CAM_RELEASE_SIMQ;
898 		fatalerr = 1;
899 	} else if (request->status & ATA_S_ERROR) {
900 		if (ccb->ccb_h.func_code == XPT_ATA_IO) {
901 			ccb->ccb_h.status |= CAM_ATA_STATUS_ERROR;
902 		} else {
903 			ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
904 			ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
905 		}
906 	} else if (request->result == ERESTART)
907 		ccb->ccb_h.status |= CAM_REQUEUE_REQ;
908 	else if (request->result != 0)
909 		ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
910 	else
911 		ccb->ccb_h.status |= CAM_REQ_CMP;
912 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP &&
913 	    !(ccb->ccb_h.status & CAM_DEV_QFRZN)) {
914 		xpt_freeze_devq(ccb->ccb_h.path, 1);
915 		ccb->ccb_h.status |= CAM_DEV_QFRZN;
916 	}
917 	if (ccb->ccb_h.func_code == XPT_ATA_IO &&
918 	    ((request->status & ATA_S_ERROR) ||
919 	    (ccb->ataio.cmd.flags & CAM_ATAIO_NEEDRESULT))) {
920 		struct ata_res *res = &ccb->ataio.res;
921 		res->status = request->status;
922 		res->error = request->error;
923 		res->lba_low = request->u.ata.lba;
924 		res->lba_mid = request->u.ata.lba >> 8;
925 		res->lba_high = request->u.ata.lba >> 16;
926 		res->device = request->u.ata.lba >> 24;
927 		res->lba_low_exp = request->u.ata.lba >> 24;
928 		res->lba_mid_exp = request->u.ata.lba >> 32;
929 		res->lba_high_exp = request->u.ata.lba >> 40;
930 		res->sector_count = request->u.ata.count;
931 		res->sector_count_exp = request->u.ata.count >> 8;
932 	}
933 	if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
934 		if (ccb->ccb_h.func_code == XPT_ATA_IO) {
935 			ccb->ataio.resid =
936 			    ccb->ataio.dxfer_len - request->donecount;
937 		} else {
938 			ccb->csio.resid =
939 			    ccb->csio.dxfer_len - request->donecount;
940 		}
941 	}
942 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR &&
943 	    (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0)
944 		ata_cam_request_sense(dev, request);
945 	else
946 		xpt_done(ccb);
947 	/* Do error recovery if needed. */
948 	if (fatalerr)
949 		ata_reinit(dev);
950 }
951 
952 static int
953 ata_check_ids(device_t dev, union ccb *ccb)
954 {
955 	struct ata_channel *ch = device_get_softc(dev);
956 
957 	if (ccb->ccb_h.target_id > ((ch->flags & ATA_NO_SLAVE) ? 0 : 1)) {
958 		ccb->ccb_h.status = CAM_TID_INVALID;
959 		xpt_done(ccb);
960 		return (-1);
961 	}
962 	if (ccb->ccb_h.target_lun != 0) {
963 		ccb->ccb_h.status = CAM_LUN_INVALID;
964 		xpt_done(ccb);
965 		return (-1);
966 	}
967 	/*
968 	 * It's a programming error to see AUXILIARY register requests.
969 	 */
970 	KASSERT(ccb->ccb_h.func_code != XPT_ATA_IO ||
971 	    ((ccb->ataio.ata_flags & ATA_FLAG_AUX) == 0),
972 	    ("AUX register unsupported"));
973 	return (0);
974 }
975 
976 static void
977 ataaction(struct cam_sim *sim, union ccb *ccb)
978 {
979 	device_t dev, parent;
980 	struct ata_channel *ch;
981 
982 	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ataaction func_code=%x\n",
983 	    ccb->ccb_h.func_code));
984 
985 	ch = (struct ata_channel *)cam_sim_softc(sim);
986 	dev = ch->dev;
987 	switch (ccb->ccb_h.func_code) {
988 	/* Common cases first */
989 	case XPT_ATA_IO:	/* Execute the requested I/O operation */
990 	case XPT_SCSI_IO:
991 		if (ata_check_ids(dev, ccb))
992 			return;
993 		if ((ch->devices & ((ATA_ATA_MASTER | ATA_ATAPI_MASTER)
994 		    << ccb->ccb_h.target_id)) == 0) {
995 			ccb->ccb_h.status = CAM_SEL_TIMEOUT;
996 			break;
997 		}
998 		if (ch->running)
999 			device_printf(dev, "already running!\n");
1000 		if (ccb->ccb_h.func_code == XPT_ATA_IO &&
1001 		    (ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
1002 		    (ccb->ataio.cmd.control & ATA_A_RESET)) {
1003 			struct ata_res *res = &ccb->ataio.res;
1004 
1005 			bzero(res, sizeof(*res));
1006 			if (ch->devices & (ATA_ATA_MASTER << ccb->ccb_h.target_id)) {
1007 				res->lba_high = 0;
1008 				res->lba_mid = 0;
1009 			} else {
1010 				res->lba_high = 0xeb;
1011 				res->lba_mid = 0x14;
1012 			}
1013 			ccb->ccb_h.status = CAM_REQ_CMP;
1014 			break;
1015 		}
1016 		ata_cam_begin_transaction(dev, ccb);
1017 		return;
1018 	case XPT_ABORT:			/* Abort the specified CCB */
1019 		/* XXX Implement */
1020 		ccb->ccb_h.status = CAM_REQ_INVALID;
1021 		break;
1022 	case XPT_SET_TRAN_SETTINGS:
1023 	{
1024 		struct	ccb_trans_settings *cts = &ccb->cts;
1025 		struct	ata_cam_device *d;
1026 
1027 		if (ata_check_ids(dev, ccb))
1028 			return;
1029 		if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
1030 			d = &ch->curr[ccb->ccb_h.target_id];
1031 		else
1032 			d = &ch->user[ccb->ccb_h.target_id];
1033 		if (ch->flags & ATA_SATA) {
1034 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_REVISION)
1035 				d->revision = cts->xport_specific.sata.revision;
1036 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_MODE) {
1037 				if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1038 					d->mode = ATA_SETMODE(ch->dev,
1039 					    ccb->ccb_h.target_id,
1040 					    cts->xport_specific.sata.mode);
1041 				} else
1042 					d->mode = cts->xport_specific.sata.mode;
1043 			}
1044 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_BYTECOUNT)
1045 				d->bytecount = min(8192, cts->xport_specific.sata.bytecount);
1046 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_ATAPI)
1047 				d->atapi = cts->xport_specific.sata.atapi;
1048 			if (cts->xport_specific.sata.valid & CTS_SATA_VALID_CAPS)
1049 				d->caps = cts->xport_specific.sata.caps;
1050 		} else {
1051 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_MODE) {
1052 				if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1053 					d->mode = ATA_SETMODE(ch->dev,
1054 					    ccb->ccb_h.target_id,
1055 					    cts->xport_specific.ata.mode);
1056 				} else
1057 					d->mode = cts->xport_specific.ata.mode;
1058 			}
1059 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_BYTECOUNT)
1060 				d->bytecount = cts->xport_specific.ata.bytecount;
1061 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_ATAPI)
1062 				d->atapi = cts->xport_specific.ata.atapi;
1063 			if (cts->xport_specific.ata.valid & CTS_ATA_VALID_CAPS)
1064 				d->caps = cts->xport_specific.ata.caps;
1065 		}
1066 		ccb->ccb_h.status = CAM_REQ_CMP;
1067 		break;
1068 	}
1069 	case XPT_GET_TRAN_SETTINGS:
1070 	{
1071 		struct	ccb_trans_settings *cts = &ccb->cts;
1072 		struct  ata_cam_device *d;
1073 
1074 		if (ata_check_ids(dev, ccb))
1075 			return;
1076 		if (cts->type == CTS_TYPE_CURRENT_SETTINGS)
1077 			d = &ch->curr[ccb->ccb_h.target_id];
1078 		else
1079 			d = &ch->user[ccb->ccb_h.target_id];
1080 		cts->protocol = PROTO_UNSPECIFIED;
1081 		cts->protocol_version = PROTO_VERSION_UNSPECIFIED;
1082 		if (ch->flags & ATA_SATA) {
1083 			cts->transport = XPORT_SATA;
1084 			cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1085 			cts->xport_specific.sata.valid = 0;
1086 			cts->xport_specific.sata.mode = d->mode;
1087 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_MODE;
1088 			cts->xport_specific.sata.bytecount = d->bytecount;
1089 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_BYTECOUNT;
1090 			if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1091 				cts->xport_specific.sata.revision =
1092 				    ATA_GETREV(dev, ccb->ccb_h.target_id);
1093 				if (cts->xport_specific.sata.revision != 0xff) {
1094 					cts->xport_specific.sata.valid |=
1095 					    CTS_SATA_VALID_REVISION;
1096 				}
1097 				cts->xport_specific.sata.caps =
1098 				    d->caps & CTS_SATA_CAPS_D;
1099 				if (ch->pm_level) {
1100 					cts->xport_specific.sata.caps |=
1101 					    CTS_SATA_CAPS_H_PMREQ;
1102 				}
1103 				cts->xport_specific.sata.caps &=
1104 				    ch->user[ccb->ccb_h.target_id].caps;
1105 			} else {
1106 				cts->xport_specific.sata.revision = d->revision;
1107 				cts->xport_specific.sata.valid |= CTS_SATA_VALID_REVISION;
1108 				cts->xport_specific.sata.caps = d->caps;
1109 			}
1110 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_CAPS;
1111 			cts->xport_specific.sata.atapi = d->atapi;
1112 			cts->xport_specific.sata.valid |= CTS_SATA_VALID_ATAPI;
1113 		} else {
1114 			cts->transport = XPORT_ATA;
1115 			cts->transport_version = XPORT_VERSION_UNSPECIFIED;
1116 			cts->xport_specific.ata.valid = 0;
1117 			cts->xport_specific.ata.mode = d->mode;
1118 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_MODE;
1119 			cts->xport_specific.ata.bytecount = d->bytecount;
1120 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_BYTECOUNT;
1121 			if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
1122 				cts->xport_specific.ata.caps =
1123 				    d->caps & CTS_ATA_CAPS_D;
1124 				if (!(ch->flags & ATA_NO_48BIT_DMA))
1125 					cts->xport_specific.ata.caps |=
1126 					    CTS_ATA_CAPS_H_DMA48;
1127 				cts->xport_specific.ata.caps &=
1128 				    ch->user[ccb->ccb_h.target_id].caps;
1129 			} else
1130 				cts->xport_specific.ata.caps = d->caps;
1131 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_CAPS;
1132 			cts->xport_specific.ata.atapi = d->atapi;
1133 			cts->xport_specific.ata.valid |= CTS_ATA_VALID_ATAPI;
1134 		}
1135 		ccb->ccb_h.status = CAM_REQ_CMP;
1136 		break;
1137 	}
1138 	case XPT_RESET_BUS:		/* Reset the specified SCSI bus */
1139 	case XPT_RESET_DEV:	/* Bus Device Reset the specified SCSI device */
1140 		ata_reinit(dev);
1141 		ccb->ccb_h.status = CAM_REQ_CMP;
1142 		break;
1143 	case XPT_TERM_IO:		/* Terminate the I/O process */
1144 		/* XXX Implement */
1145 		ccb->ccb_h.status = CAM_REQ_INVALID;
1146 		break;
1147 	case XPT_PATH_INQ:		/* Path routing inquiry */
1148 	{
1149 		struct ccb_pathinq *cpi = &ccb->cpi;
1150 
1151 		parent = device_get_parent(dev);
1152 		cpi->version_num = 1; /* XXX??? */
1153 		cpi->hba_inquiry = PI_SDTR_ABLE;
1154 		cpi->target_sprt = 0;
1155 		cpi->hba_misc = PIM_SEQSCAN | PIM_UNMAPPED;
1156 		cpi->hba_eng_cnt = 0;
1157 		if (ch->flags & ATA_NO_SLAVE)
1158 			cpi->max_target = 0;
1159 		else
1160 			cpi->max_target = 1;
1161 		cpi->max_lun = 0;
1162 		cpi->initiator_id = 0;
1163 		cpi->bus_id = cam_sim_bus(sim);
1164 		if (ch->flags & ATA_SATA)
1165 			cpi->base_transfer_speed = 150000;
1166 		else
1167 			cpi->base_transfer_speed = 3300;
1168 		strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1169 		strlcpy(cpi->hba_vid, "ATA", HBA_IDLEN);
1170 		strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1171 		cpi->unit_number = cam_sim_unit(sim);
1172 		if (ch->flags & ATA_SATA)
1173 			cpi->transport = XPORT_SATA;
1174 		else
1175 			cpi->transport = XPORT_ATA;
1176 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
1177 		cpi->protocol = PROTO_ATA;
1178 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
1179 		cpi->maxio = ch->dma.max_iosize ? ch->dma.max_iosize : DFLTPHYS;
1180 		if (device_get_devclass(device_get_parent(parent)) ==
1181 		    devclass_find("pci")) {
1182 			cpi->hba_vendor = pci_get_vendor(parent);
1183 			cpi->hba_device = pci_get_device(parent);
1184 			cpi->hba_subvendor = pci_get_subvendor(parent);
1185 			cpi->hba_subdevice = pci_get_subdevice(parent);
1186 		}
1187 		cpi->ccb_h.status = CAM_REQ_CMP;
1188 		break;
1189 	}
1190 	default:
1191 		ccb->ccb_h.status = CAM_REQ_INVALID;
1192 		break;
1193 	}
1194 	xpt_done(ccb);
1195 }
1196 
1197 static void
1198 atapoll(struct cam_sim *sim)
1199 {
1200 	struct ata_channel *ch = (struct ata_channel *)cam_sim_softc(sim);
1201 
1202 	ata_interrupt_locked(ch);
1203 }
1204 
1205 /*
1206  * module handeling
1207  */
1208 static int
1209 ata_module_event_handler(module_t mod, int what, void *arg)
1210 {
1211 
1212     switch (what) {
1213     case MOD_LOAD:
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_CONFIGURE, SI_ORDER_SECOND);
1226 MODULE_VERSION(ata, 1);
1227 MODULE_DEPEND(ata, cam, 1, 1, 1);
1228