xref: /freebsd/sys/dev/ahci/ahciem.c (revision 5bb3134a8c21cb87b30e135ef168483f0333dabb)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2012 Alexander Motin <mav@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/module.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/bus.h>
37 #include <sys/conf.h>
38 #include <sys/endian.h>
39 #include <sys/malloc.h>
40 #include <sys/lock.h>
41 #include <sys/mutex.h>
42 #include <machine/stdarg.h>
43 #include <machine/resource.h>
44 #include <machine/bus.h>
45 #include <sys/rman.h>
46 #include <dev/led/led.h>
47 #include <dev/pci/pcivar.h>
48 #include <dev/pci/pcireg.h>
49 #include "ahci.h"
50 
51 #include <cam/cam.h>
52 #include <cam/cam_ccb.h>
53 #include <cam/cam_sim.h>
54 #include <cam/cam_xpt_sim.h>
55 #include <cam/cam_debug.h>
56 #include <cam/scsi/scsi_ses.h>
57 
58 /* local prototypes */
59 static void ahciemaction(struct cam_sim *sim, union ccb *ccb);
60 static void ahciempoll(struct cam_sim *sim);
61 static int ahci_em_reset(device_t dev);
62 static void ahci_em_led(void *priv, int onoff);
63 static void ahci_em_setleds(device_t dev, int c);
64 
65 static int
66 ahci_em_probe(device_t dev)
67 {
68 
69 	device_set_desc_copy(dev, "AHCI enclosure management bridge");
70 	return (BUS_PROBE_DEFAULT);
71 }
72 
73 static int
74 ahci_em_attach(device_t dev)
75 {
76 	device_t parent = device_get_parent(dev);
77 	struct ahci_controller *ctlr = device_get_softc(parent);
78 	struct ahci_enclosure *enc = device_get_softc(dev);
79 	struct cam_devq *devq;
80 	int i, c, rid, error;
81 	char buf[32];
82 
83 	enc->dev = dev;
84 	enc->quirks = ctlr->quirks;
85 	enc->channels = ctlr->channels;
86 	enc->ichannels = ctlr->ichannels;
87 	mtx_init(&enc->mtx, "AHCI enclosure lock", NULL, MTX_DEF);
88 	rid = 0;
89 	if (!(enc->r_memc = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
90 	    &rid, RF_ACTIVE))) {
91 		mtx_destroy(&enc->mtx);
92 		return (ENXIO);
93 	}
94 	enc->capsem = ATA_INL(enc->r_memc, 0);
95 	rid = 1;
96 	if (!(enc->r_memt = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
97 	    &rid, RF_ACTIVE))) {
98 		error = ENXIO;
99 		goto err0;
100 	}
101 	if ((enc->capsem & (AHCI_EM_XMT | AHCI_EM_SMB)) == 0) {
102 		rid = 2;
103 		if (!(enc->r_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
104 		    &rid, RF_ACTIVE))) {
105 			error = ENXIO;
106 			goto err0;
107 		}
108 	} else
109 		enc->r_memr = NULL;
110 	mtx_lock(&enc->mtx);
111 	if (ahci_em_reset(dev) != 0) {
112 	    error = ENXIO;
113 	    goto err1;
114 	}
115 	rid = ATA_IRQ_RID;
116 	/* Create the device queue for our SIM. */
117 	devq = cam_simq_alloc(1);
118 	if (devq == NULL) {
119 		device_printf(dev, "Unable to allocate SIM queue\n");
120 		error = ENOMEM;
121 		goto err1;
122 	}
123 	/* Construct SIM entry */
124 	enc->sim = cam_sim_alloc(ahciemaction, ahciempoll, "ahciem", enc,
125 	    device_get_unit(dev), &enc->mtx,
126 	    1, 0, devq);
127 	if (enc->sim == NULL) {
128 		cam_simq_free(devq);
129 		device_printf(dev, "Unable to allocate SIM\n");
130 		error = ENOMEM;
131 		goto err1;
132 	}
133 	if (xpt_bus_register(enc->sim, dev, 0) != CAM_SUCCESS) {
134 		device_printf(dev, "unable to register xpt bus\n");
135 		error = ENXIO;
136 		goto err2;
137 	}
138 	if (xpt_create_path(&enc->path, /*periph*/NULL, cam_sim_path(enc->sim),
139 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
140 		device_printf(dev, "Unable to create path\n");
141 		error = ENXIO;
142 		goto err3;
143 	}
144 	mtx_unlock(&enc->mtx);
145 	if (bootverbose) {
146 		device_printf(dev, "Caps:%s%s%s%s%s%s%s%s\n",
147 		    (enc->capsem & AHCI_EM_PM) ? " PM":"",
148 		    (enc->capsem & AHCI_EM_ALHD) ? " ALHD":"",
149 		    (enc->capsem & AHCI_EM_XMT) ? " XMT":"",
150 		    (enc->capsem & AHCI_EM_SMB) ? " SMB":"",
151 		    (enc->capsem & AHCI_EM_SGPIO) ? " SGPIO":"",
152 		    (enc->capsem & AHCI_EM_SES2) ? " SES-2":"",
153 		    (enc->capsem & AHCI_EM_SAFTE) ? " SAF-TE":"",
154 		    (enc->capsem & AHCI_EM_LED) ? " LED":"");
155 	}
156 	if ((enc->capsem & AHCI_EM_LED)) {
157 		for (c = 0; c < enc->channels; c++) {
158 			if ((enc->ichannels & (1 << c)) == 0)
159 				continue;
160 			for (i = 0; i < AHCI_NUM_LEDS; i++) {
161 				enc->leds[c * AHCI_NUM_LEDS + i].dev = dev;
162 				enc->leds[c * AHCI_NUM_LEDS + i].num =
163 				    c * AHCI_NUM_LEDS + i;
164 			}
165 			if ((enc->capsem & AHCI_EM_ALHD) == 0) {
166 				snprintf(buf, sizeof(buf), "%s.%d.act",
167 				    device_get_nameunit(parent), c);
168 				enc->leds[c * AHCI_NUM_LEDS + 0].led =
169 				    led_create(ahci_em_led,
170 				    &enc->leds[c * AHCI_NUM_LEDS + 0], buf);
171 			}
172 			snprintf(buf, sizeof(buf), "%s.%d.locate",
173 			    device_get_nameunit(parent), c);
174 			enc->leds[c * AHCI_NUM_LEDS + 1].led =
175 			    led_create(ahci_em_led,
176 			    &enc->leds[c * AHCI_NUM_LEDS + 1], buf);
177 			snprintf(buf, sizeof(buf), "%s.%d.fault",
178 			    device_get_nameunit(parent), c);
179 			enc->leds[c * AHCI_NUM_LEDS + 2].led =
180 			    led_create(ahci_em_led,
181 			    &enc->leds[c * AHCI_NUM_LEDS + 2], buf);
182 		}
183 	}
184 	return (0);
185 
186 err3:
187 	xpt_bus_deregister(cam_sim_path(enc->sim));
188 err2:
189 	cam_sim_free(enc->sim, /*free_devq*/TRUE);
190 err1:
191 	mtx_unlock(&enc->mtx);
192 	if (enc->r_memr)
193 		bus_release_resource(dev, SYS_RES_MEMORY, 2, enc->r_memr);
194 err0:
195 	if (enc->r_memt)
196 		bus_release_resource(dev, SYS_RES_MEMORY, 1, enc->r_memt);
197 	bus_release_resource(dev, SYS_RES_MEMORY, 0, enc->r_memc);
198 	mtx_destroy(&enc->mtx);
199 	return (error);
200 }
201 
202 static int
203 ahci_em_detach(device_t dev)
204 {
205 	struct ahci_enclosure *enc = device_get_softc(dev);
206 	int i;
207 
208 	for (i = 0; i < enc->channels * AHCI_NUM_LEDS; i++) {
209 		if (enc->leds[i].led)
210 			led_destroy(enc->leds[i].led);
211 	}
212 	mtx_lock(&enc->mtx);
213 	xpt_async(AC_LOST_DEVICE, enc->path, NULL);
214 	xpt_free_path(enc->path);
215 	xpt_bus_deregister(cam_sim_path(enc->sim));
216 	cam_sim_free(enc->sim, /*free_devq*/TRUE);
217 	mtx_unlock(&enc->mtx);
218 
219 	bus_release_resource(dev, SYS_RES_MEMORY, 0, enc->r_memc);
220 	bus_release_resource(dev, SYS_RES_MEMORY, 1, enc->r_memt);
221 	if (enc->r_memr)
222 		bus_release_resource(dev, SYS_RES_MEMORY, 2, enc->r_memr);
223 	mtx_destroy(&enc->mtx);
224 	return (0);
225 }
226 
227 static int
228 ahci_em_reset(device_t dev)
229 {
230 	struct ahci_enclosure *enc;
231 	int i, timeout;
232 
233 	enc = device_get_softc(dev);
234 	ATA_OUTL(enc->r_memc, 0, AHCI_EM_RST);
235 	timeout = 1000;
236 	while ((ATA_INL(enc->r_memc, 0) & AHCI_EM_RST) &&
237 	    --timeout > 0)
238 		DELAY(1000);
239 	if (timeout == 0) {
240 		device_printf(dev, "EM timeout\n");
241 		return (1);
242 	}
243 	for (i = 0; i < enc->channels; i++)
244 		ahci_em_setleds(dev, i);
245 	return (0);
246 }
247 
248 static int
249 ahci_em_suspend(device_t dev)
250 {
251 	struct ahci_enclosure *enc = device_get_softc(dev);
252 
253 	mtx_lock(&enc->mtx);
254 	xpt_freeze_simq(enc->sim, 1);
255 	mtx_unlock(&enc->mtx);
256 	return (0);
257 }
258 
259 static int
260 ahci_em_resume(device_t dev)
261 {
262 	struct ahci_enclosure *enc = device_get_softc(dev);
263 
264 	mtx_lock(&enc->mtx);
265 	ahci_em_reset(dev);
266 	xpt_release_simq(enc->sim, TRUE);
267 	mtx_unlock(&enc->mtx);
268 	return (0);
269 }
270 
271 devclass_t ahciem_devclass;
272 static device_method_t ahciem_methods[] = {
273 	DEVMETHOD(device_probe,     ahci_em_probe),
274 	DEVMETHOD(device_attach,    ahci_em_attach),
275 	DEVMETHOD(device_detach,    ahci_em_detach),
276 	DEVMETHOD(device_suspend,   ahci_em_suspend),
277 	DEVMETHOD(device_resume,    ahci_em_resume),
278 	DEVMETHOD_END
279 };
280 static driver_t ahciem_driver = {
281         "ahciem",
282         ahciem_methods,
283         sizeof(struct ahci_enclosure)
284 };
285 DRIVER_MODULE(ahciem, ahci, ahciem_driver, ahciem_devclass, NULL, NULL);
286 
287 static void
288 ahci_em_setleds(device_t dev, int c)
289 {
290 	struct ahci_enclosure *enc;
291 	int timeout;
292 	int16_t val;
293 
294 	enc = device_get_softc(dev);
295 
296 	val = 0;
297 	if (enc->status[c][2] & SESCTL_RQSACT)		/* Activity */
298 		val |= (1 << 0);
299 	if (enc->status[c][1] & SESCTL_RQSRR)		/* Rebuild */
300 		val |= (1 << 6) | (1 << 3);
301 	else if (enc->status[c][2] & SESCTL_RQSID)	/* Identification */
302 		val |= (1 << 3);
303 	else if (enc->status[c][3] & SESCTL_RQSFLT)	/* Fault */
304 		val |= (1 << 6);
305 
306 	timeout = 10000;
307 	while (ATA_INL(enc->r_memc, 0) & (AHCI_EM_TM | AHCI_EM_RST) &&
308 	    --timeout > 0)
309 		DELAY(100);
310 	if (timeout == 0)
311 		device_printf(dev, "Transmit timeout\n");
312 	ATA_OUTL(enc->r_memt, 0, (1 << 8) | (0 << 16) | (0 << 24));
313 	ATA_OUTL(enc->r_memt, 4, c | (0 << 8) | (val << 16));
314 	ATA_OUTL(enc->r_memc, 0, AHCI_EM_TM);
315 }
316 
317 static void
318 ahci_em_led(void *priv, int onoff)
319 {
320 	struct ahci_led *led;
321 	struct ahci_enclosure *enc;
322 	int c, l;
323 
324 	led = (struct ahci_led *)priv;
325 	enc = device_get_softc(led->dev);
326 	c = led->num / AHCI_NUM_LEDS;
327 	l = led->num % AHCI_NUM_LEDS;
328 
329 	if (l == 0) {
330 		if (onoff)
331 			enc->status[c][2] |= 0x80;
332 		else
333 			enc->status[c][2] &= ~0x80;
334 	} else if (l == 1) {
335 		if (onoff)
336 			enc->status[c][2] |= SESCTL_RQSID;
337 		else
338 			enc->status[c][2] &= ~SESCTL_RQSID;
339 	} else if (l == 2) {
340 		if (onoff)
341 			enc->status[c][3] |= SESCTL_RQSFLT;
342 		else
343 			enc->status[c][3] &= SESCTL_RQSFLT;
344 	}
345 	ahci_em_setleds(led->dev, c);
346 }
347 
348 static int
349 ahci_check_ids(union ccb *ccb)
350 {
351 
352 	if (ccb->ccb_h.target_id != 0) {
353 		ccb->ccb_h.status = CAM_TID_INVALID;
354 		xpt_done(ccb);
355 		return (-1);
356 	}
357 	if (ccb->ccb_h.target_lun != 0) {
358 		ccb->ccb_h.status = CAM_LUN_INVALID;
359 		xpt_done(ccb);
360 		return (-1);
361 	}
362 	return (0);
363 }
364 
365 static void
366 ahci_em_emulate_ses_on_led(device_t dev, union ccb *ccb)
367 {
368 	struct ahci_enclosure *enc;
369 	struct ahci_channel *ch;
370 	struct ses_status_page *page;
371 	struct ses_status_array_dev_slot *ads, *ads0;
372 	struct ses_elm_desc_hdr *elmd;
373 	struct ses_elm_addlstatus_eip_hdr *elma;
374 	struct ses_elm_ata_hdr *elmb;
375 	uint8_t *buf;
376 	int i;
377 
378 	enc = device_get_softc(dev);
379 	buf = ccb->ataio.data_ptr;
380 
381 	/* General request validation. */
382 	if (ccb->ataio.cmd.command != ATA_SEP_ATTN ||
383 	    ccb->ataio.dxfer_len < ccb->ataio.cmd.sector_count * 4) {
384 		ccb->ccb_h.status = CAM_REQ_INVALID;
385 		goto out;
386 	}
387 
388 	/* SEMB IDENTIFY */
389 	if (ccb->ataio.cmd.features == 0xEC &&
390 	    ccb->ataio.cmd.sector_count >= 16) {
391 		bzero(buf, ccb->ataio.dxfer_len);
392 		buf[0] = 64;		/* Valid bytes. */
393 		buf[2] = 0x30;		/* NAA Locally Assigned. */
394 		strncpy(&buf[3], device_get_nameunit(dev), 7);
395 		strncpy(&buf[10], "AHCI    ", SID_VENDOR_SIZE);
396 		strncpy(&buf[18], "SGPIO Enclosure ", SID_PRODUCT_SIZE);
397 		strncpy(&buf[34], "2.00", SID_REVISION_SIZE);
398 		strncpy(&buf[39], "0001", 4);
399 		strncpy(&buf[43], "S-E-S ", 6);
400 		strncpy(&buf[49], "2.00", 4);
401 		ccb->ccb_h.status = CAM_REQ_CMP;
402 		goto out;
403 	}
404 
405 	/* SEMB RECEIVE DIAGNOSTIC RESULT (0) */
406 	page = (struct ses_status_page *)buf;
407 	if (ccb->ataio.cmd.lba_low == 0x02 &&
408 	    ccb->ataio.cmd.features == 0x00 &&
409 	    ccb->ataio.cmd.sector_count >= 3) {
410 		bzero(buf, ccb->ataio.dxfer_len);
411 		page->hdr.page_code = 0;
412 		scsi_ulto2b(5, page->hdr.length);
413 		buf[4] = 0x00;
414 		buf[5] = 0x01;
415 		buf[6] = 0x02;
416 		buf[7] = 0x07;
417 		buf[8] = 0x0a;
418 		ccb->ccb_h.status = CAM_REQ_CMP;
419 		goto out;
420 	}
421 
422 	/* SEMB RECEIVE DIAGNOSTIC RESULT (1) */
423 	if (ccb->ataio.cmd.lba_low == 0x02 &&
424 	    ccb->ataio.cmd.features == 0x01 &&
425 	    ccb->ataio.cmd.sector_count >= 16) {
426 		struct ses_enc_desc *ed;
427 		struct ses_elm_type_desc *td;
428 
429 		bzero(buf, ccb->ataio.dxfer_len);
430 		page->hdr.page_code = 0x01;
431 		scsi_ulto2b(4 + sizeof(*ed) + sizeof(*td) + 11,
432 		    page->hdr.length);
433 		ed = (struct ses_enc_desc *)&buf[8];
434 		ed->byte0 = 0x11;
435 		ed->subenc_id = 0;
436 		ed->num_types = 1;
437 		ed->length = 36;
438 		ed->logical_id[0] = 0x30;	/* NAA Locally Assigned. */
439 		strncpy(&ed->logical_id[1], device_get_nameunit(dev), 7);
440 		strncpy(ed->vendor_id, "AHCI    ", SID_VENDOR_SIZE);
441 		strncpy(ed->product_id, "SGPIO Enclosure ", SID_PRODUCT_SIZE);
442 		strncpy(ed->product_rev, "2.00", SID_REVISION_SIZE);
443 		td = (struct ses_elm_type_desc *)ses_enc_desc_next(ed);
444 		td->etype_elm_type = 0x17;
445 		td->etype_maxelt = enc->channels;
446 		td->etype_subenc = 0;
447 		td->etype_txt_len = 11;
448 		snprintf((char *)(td + 1), 12, "Drive Slots");
449 		ccb->ccb_h.status = CAM_REQ_CMP;
450 		goto out;
451 	}
452 
453 	/* SEMB RECEIVE DIAGNOSTIC RESULT (2) */
454 	if (ccb->ataio.cmd.lba_low == 0x02 &&
455 	    ccb->ataio.cmd.features == 0x02 &&
456 	    ccb->ataio.cmd.sector_count >= (3 + enc->channels)) {
457 		bzero(buf, ccb->ataio.dxfer_len);
458 		page->hdr.page_code = 0x02;
459 		scsi_ulto2b(4 + 4 * (1 + enc->channels),
460 		    page->hdr.length);
461 		for (i = 0; i < enc->channels; i++) {
462 			ads = &page->elements[i + 1].array_dev_slot;
463 			memcpy(ads, enc->status[i], 4);
464 			ch = ahci_getch(device_get_parent(dev), i);
465 			if (ch == NULL) {
466 				ads->common.bytes[0] |= SES_OBJSTAT_UNKNOWN;
467 				continue;
468 			}
469 			if (ch->pm_present)
470 				ads->common.bytes[0] |= SES_OBJSTAT_UNKNOWN;
471 			else if (ch->devices)
472 				ads->common.bytes[0] |= SES_OBJSTAT_OK;
473 			else if (ch->disablephy)
474 				ads->common.bytes[0] |= SES_OBJSTAT_NOTAVAIL;
475 			else
476 				ads->common.bytes[0] |= SES_OBJSTAT_NOTINSTALLED;
477 			if (ch->disablephy)
478 				ads->common.bytes[3] |= SESCTL_DEVOFF;
479 			ahci_putch(ch);
480 		}
481 		ccb->ccb_h.status = CAM_REQ_CMP;
482 		goto out;
483 	}
484 
485 	/* SEMB SEND DIAGNOSTIC (2) */
486 	if (ccb->ataio.cmd.lba_low == 0x82 &&
487 	    ccb->ataio.cmd.features == 0x02 &&
488 	    ccb->ataio.cmd.sector_count >= (3 + enc->channels)) {
489 		ads0 = &page->elements[0].array_dev_slot;
490 		for (i = 0; i < enc->channels; i++) {
491 			ads = &page->elements[i + 1].array_dev_slot;
492 			if (ads->common.bytes[0] & SESCTL_CSEL) {
493 				enc->status[i][0] = 0;
494 				enc->status[i][1] = ads->bytes[0] &
495 				    SESCTL_RQSRR;
496 				enc->status[i][2] = ads->bytes[1] &
497 				    (SESCTL_RQSACT | SESCTL_RQSID);
498 				enc->status[i][3] = ads->bytes[2] &
499 				    SESCTL_RQSFLT;
500 				ahci_em_setleds(dev, i);
501 			} else if (ads0->common.bytes[0] & SESCTL_CSEL) {
502 				enc->status[i][0] = 0;
503 				enc->status[i][1] = ads0->bytes[0] &
504 				    SESCTL_RQSRR;
505 				enc->status[i][2] = ads0->bytes[1] &
506 				    (SESCTL_RQSACT | SESCTL_RQSID);
507 				enc->status[i][3] = ads0->bytes[2] &
508 				    SESCTL_RQSFLT;
509 				ahci_em_setleds(dev, i);
510 			}
511 		}
512 		ccb->ccb_h.status = CAM_REQ_CMP;
513 		goto out;
514 	}
515 
516 	/* SEMB RECEIVE DIAGNOSTIC RESULT (7) */
517 	if (ccb->ataio.cmd.lba_low == 0x02 &&
518 	    ccb->ataio.cmd.features == 0x07 &&
519 	    ccb->ataio.cmd.sector_count >= (6 + 3 * enc->channels)) {
520 		bzero(buf, ccb->ataio.dxfer_len);
521 		page->hdr.page_code = 0x07;
522 		scsi_ulto2b(4 + 15 + 11 * enc->channels, page->hdr.length);
523 		elmd = (struct ses_elm_desc_hdr *)&buf[8];
524 		scsi_ulto2b(11, elmd->length);
525 		snprintf((char *)(elmd + 1), 12, "Drive Slots");
526 		for (i = 0; i < enc->channels; i++) {
527 			elmd = (struct ses_elm_desc_hdr *)&buf[8 + 15 + 11 * i];
528 			scsi_ulto2b(7, elmd->length);
529 			snprintf((char *)(elmd + 1), 8, "Slot %02d", i);
530 		}
531 		ccb->ccb_h.status = CAM_REQ_CMP;
532 		goto out;
533 	}
534 
535 	/* SEMB RECEIVE DIAGNOSTIC RESULT (a) */
536 	if (ccb->ataio.cmd.lba_low == 0x02 &&
537 	    ccb->ataio.cmd.features == 0x0a &&
538 	    ccb->ataio.cmd.sector_count >= (2 + 3 * enc->channels)) {
539 		bzero(buf, ccb->ataio.dxfer_len);
540 		page->hdr.page_code = 0x0a;
541 		scsi_ulto2b(4 + (sizeof(*elma) + sizeof(*elmb)) * enc->channels,
542 		    page->hdr.length);
543 		for (i = 0; i < enc->channels; i++) {
544 			elma = (struct ses_elm_addlstatus_eip_hdr *)&buf[
545 			    8 + (sizeof(*elma) + sizeof(*elmb)) * i];
546 			elma->base.byte0 = 0x10 | SPSP_PROTO_ATA;
547 			elma->base.length = 2 + sizeof(*elmb);
548 			elma->byte2 = 0x01;
549 			elma->element_index = 1 + i;
550 			ch = ahci_getch(device_get_parent(dev), i);
551 			if (ch == NULL) {
552 				elma->base.byte0 |= 0x80;
553 				continue;
554 			}
555 			if (ch->devices == 0 || ch->pm_present)
556 				elma->base.byte0 |= 0x80;
557 			elmb = (struct ses_elm_ata_hdr *)(elma + 1);
558 			scsi_ulto4b(cam_sim_path(ch->sim), elmb->bus);
559 			scsi_ulto4b(0, elmb->target);
560 			ahci_putch(ch);
561 		}
562 		ccb->ccb_h.status = CAM_REQ_CMP;
563 		goto out;
564 	}
565 
566 	ccb->ccb_h.status = CAM_REQ_INVALID;
567 out:
568 	xpt_done(ccb);
569 }
570 
571 static void
572 ahci_em_begin_transaction(device_t dev, union ccb *ccb)
573 {
574 	struct ahci_enclosure *enc;
575 	struct ata_res *res;
576 
577 	enc = device_get_softc(dev);
578 	res = &ccb->ataio.res;
579 	bzero(res, sizeof(*res));
580 	if ((ccb->ataio.cmd.flags & CAM_ATAIO_CONTROL) &&
581 	    (ccb->ataio.cmd.control & ATA_A_RESET)) {
582 		res->lba_high = 0xc3;
583 		res->lba_mid = 0x3c;
584 		ccb->ccb_h.status = CAM_REQ_CMP;
585 		xpt_done(ccb);
586 		return;
587 	}
588 
589 	if (enc->capsem & AHCI_EM_LED) {
590 		ahci_em_emulate_ses_on_led(dev, ccb);
591 		return;
592 	} else
593 		device_printf(dev, "Unsupported enclosure interface\n");
594 
595 	ccb->ccb_h.status = CAM_REQ_INVALID;
596 	xpt_done(ccb);
597 }
598 
599 static void
600 ahciemaction(struct cam_sim *sim, union ccb *ccb)
601 {
602 	device_t dev, parent;
603 	struct ahci_enclosure *enc;
604 
605 	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
606 	    ("ahciemaction func_code=%x\n", ccb->ccb_h.func_code));
607 
608 	enc = cam_sim_softc(sim);
609 	dev = enc->dev;
610 	switch (ccb->ccb_h.func_code) {
611 	case XPT_ATA_IO:	/* Execute the requested I/O operation */
612 		if (ahci_check_ids(ccb))
613 			return;
614 		ahci_em_begin_transaction(dev, ccb);
615 		return;
616 	case XPT_RESET_BUS:		/* Reset the specified bus */
617 	case XPT_RESET_DEV:	/* Bus Device Reset the specified device */
618 		ahci_em_reset(dev);
619 		ccb->ccb_h.status = CAM_REQ_CMP;
620 		break;
621 	case XPT_PATH_INQ:		/* Path routing inquiry */
622 	{
623 		struct ccb_pathinq *cpi = &ccb->cpi;
624 
625 		parent = device_get_parent(dev);
626 		cpi->version_num = 1; /* XXX??? */
627 		cpi->hba_inquiry = PI_SDTR_ABLE;
628 		cpi->target_sprt = 0;
629 		cpi->hba_misc = PIM_SEQSCAN;
630 		cpi->hba_eng_cnt = 0;
631 		cpi->max_target = 0;
632 		cpi->max_lun = 0;
633 		cpi->initiator_id = 0;
634 		cpi->bus_id = cam_sim_bus(sim);
635 		cpi->base_transfer_speed = 150000;
636 		strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
637 		strlcpy(cpi->hba_vid, "AHCI", HBA_IDLEN);
638 		strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
639 		cpi->unit_number = cam_sim_unit(sim);
640 		cpi->transport = XPORT_SATA;
641 		cpi->transport_version = XPORT_VERSION_UNSPECIFIED;
642 		cpi->protocol = PROTO_ATA;
643 		cpi->protocol_version = PROTO_VERSION_UNSPECIFIED;
644 		cpi->maxio = maxphys;
645 		cpi->hba_vendor = pci_get_vendor(parent);
646 		cpi->hba_device = pci_get_device(parent);
647 		cpi->hba_subvendor = pci_get_subvendor(parent);
648 		cpi->hba_subdevice = pci_get_subdevice(parent);
649 		cpi->ccb_h.status = CAM_REQ_CMP;
650 		break;
651 	}
652 	default:
653 		ccb->ccb_h.status = CAM_REQ_INVALID;
654 		break;
655 	}
656 	xpt_done(ccb);
657 }
658 
659 static void
660 ahciempoll(struct cam_sim *sim)
661 {
662 
663 }
664