xref: /dragonfly/sys/dev/disk/sbp/sbp.c (revision b7367ef6)
1 /*
2  * Copyright (c) 2003 Hidetoshi Shimokawa
3  * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. All advertising materials mentioning features or use of this software
15  *    must display the acknowledgement as bellow:
16  *
17  *    This product includes software developed by K. Kobayashi and H. Shimokawa
18  *
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
26  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32  * POSSIBILITY OF SUCH DAMAGE.
33  *
34  * $FreeBSD: src/sys/dev/firewire/sbp.c,v 1.74 2004/01/08 14:58:09 simokawa Exp $
35  * $DragonFly: src/sys/dev/disk/sbp/sbp.c,v 1.24 2007/09/15 20:06:38 swildner Exp $
36  *
37  */
38 
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/conf.h>
42 #include <sys/module.h>
43 #include <sys/bus.h>
44 #include <sys/kernel.h>
45 #include <sys/sysctl.h>
46 #include <sys/malloc.h>
47 
48 #include <sys/devicestat.h>	/* for struct devstat */
49 #include <sys/thread2.h>
50 
51 #include <bus/cam/cam.h>
52 #include <bus/cam/cam_ccb.h>
53 #include <bus/cam/cam_sim.h>
54 #include <bus/cam/cam_xpt_sim.h>
55 #include <bus/cam/cam_debug.h>
56 #include <bus/cam/cam_periph.h>
57 #include <bus/cam/scsi/scsi_all.h>
58 
59 #include <bus/firewire/firewire.h>
60 #include <bus/firewire/firewirereg.h>
61 #include <bus/firewire/fwdma.h>
62 #include <bus/firewire/iec13213.h>
63 #include "sbp.h"
64 
65 #define ccb_sdev_ptr	spriv_ptr0
66 #define ccb_sbp_ptr	spriv_ptr1
67 
68 #define SBP_NUM_TARGETS 8 /* MAX 64 */
69 /*
70  * Scan_bus doesn't work for more than 8 LUNs
71  * because of CAM_SCSI2_MAXLUN in cam_xpt.c
72  */
73 #define SBP_NUM_LUNS 64
74 #define SBP_DMA_SIZE PAGE_SIZE
75 #define SBP_LOGIN_SIZE sizeof(struct sbp_login_res)
76 #define SBP_QUEUE_LEN ((SBP_DMA_SIZE - SBP_LOGIN_SIZE) / sizeof(struct sbp_ocb))
77 #define SBP_NUM_OCB (SBP_QUEUE_LEN * SBP_NUM_TARGETS)
78 
79 /*
80  * STATUS FIFO addressing
81  *   bit
82  * -----------------------
83  *  0- 1( 2): 0 (alingment)
84  *  2- 7( 6): target
85  *  8-15( 8): lun
86  * 16-31( 8): reserved
87  * 32-47(16): SBP_BIND_HI
88  * 48-64(16): bus_id, node_id
89  */
90 #define SBP_BIND_HI 0x1
91 #define SBP_DEV2ADDR(t, l) \
92 	(((u_int64_t)SBP_BIND_HI << 32) \
93 	| (((l) & 0xff) << 8) \
94 	| (((t) & 0x3f) << 2))
95 #define SBP_ADDR2TRG(a)	(((a) >> 2) & 0x3f)
96 #define SBP_ADDR2LUN(a)	(((a) >> 8) & 0xff)
97 #define SBP_INITIATOR 7
98 
99 static char *orb_fun_name[] = {
100 	ORB_FUN_NAMES
101 };
102 
103 static int debug = 0;
104 static int auto_login = 1;
105 static int max_speed = -1;
106 #if 0
107 static int sbp_cold = 1;
108 #endif
109 static int ex_login = 1;
110 static int login_delay = 1000;	/* msec */
111 static int scan_delay = 500;	/* msec */
112 static int sbp_tags = 0;
113 
114 SYSCTL_DECL(_hw_firewire);
115 SYSCTL_NODE(_hw_firewire, OID_AUTO, sbp, CTLFLAG_RD, 0, "SBP-II Subsystem");
116 SYSCTL_INT(_debug, OID_AUTO, sbp_debug, CTLFLAG_RW, &debug, 0,
117 	"SBP debug flag");
118 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, auto_login, CTLFLAG_RW, &auto_login, 0,
119 	"SBP perform login automatically");
120 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, max_speed, CTLFLAG_RW, &max_speed, 0,
121 	"SBP transfer max speed");
122 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, exclusive_login, CTLFLAG_RW,
123 	&ex_login, 0, "SBP transfer max speed");
124 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, login_delay, CTLFLAG_RW,
125 	&login_delay, 0, "SBP login delay in msec");
126 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, scan_delay, CTLFLAG_RW,
127 	&scan_delay, 0, "SBP scan delay in msec");
128 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, tags, CTLFLAG_RW, &sbp_tags, 0,
129 	"SBP tagged queuing support");
130 
131 TUNABLE_INT("hw.firewire.sbp.auto_login", &auto_login);
132 TUNABLE_INT("hw.firewire.sbp.max_speed", &max_speed);
133 TUNABLE_INT("hw.firewire.sbp.exclusive_login", &ex_login);
134 TUNABLE_INT("hw.firewire.sbp.login_delay", &login_delay);
135 TUNABLE_INT("hw.firewire.sbp.scan_delay", &scan_delay);
136 TUNABLE_INT("hw.firewire.sbp.tags", &sbp_tags);
137 
138 #define NEED_RESPONSE 0
139 
140 #define SBP_SEG_MAX rounddown(0xffff, PAGE_SIZE)
141 #ifdef __sparc64__ /* iommu */
142 #define SBP_IND_MAX howmany(MAXPHYS, SBP_SEG_MAX)
143 #else
144 #define SBP_IND_MAX howmany(MAXPHYS, PAGE_SIZE)
145 #endif
146 struct sbp_ocb {
147 	STAILQ_ENTRY(sbp_ocb)	ocb;
148 	union ccb	*ccb;
149 	bus_addr_t	bus_addr;
150 	u_int32_t	orb[8];
151 #define IND_PTR_OFFSET	(8*sizeof(u_int32_t))
152 	struct ind_ptr  ind_ptr[SBP_IND_MAX];
153 	struct sbp_dev	*sdev;
154 	int		flags; /* XXX should be removed */
155 	bus_dmamap_t	dmamap;
156 };
157 
158 #define OCB_ACT_MGM 0
159 #define OCB_ACT_CMD 1
160 #define OCB_MATCH(o,s)	((o)->bus_addr == ntohl((s)->orb_lo))
161 
162 struct sbp_dev{
163 #define SBP_DEV_RESET		0	/* accept login */
164 #define SBP_DEV_LOGIN		1	/* to login */
165 #if 0
166 #define SBP_DEV_RECONN		2	/* to reconnect */
167 #endif
168 #define SBP_DEV_TOATTACH	3	/* to attach */
169 #define SBP_DEV_PROBE		4	/* scan lun */
170 #define SBP_DEV_ATTACHED	5	/* in operation */
171 #define SBP_DEV_DEAD		6	/* unavailable unit */
172 #define SBP_DEV_RETRY		7	/* unavailable unit */
173 	u_int8_t status:4,
174 		 timeout:4;
175 	u_int8_t type;
176 	u_int16_t lun_id;
177 	u_int16_t freeze;
178 #define	ORB_LINK_DEAD		(1 << 0)
179 #define	VALID_LUN		(1 << 1)
180 #define	ORB_POINTER_ACTIVE	(1 << 2)
181 #define	ORB_POINTER_NEED	(1 << 3)
182 	u_int16_t flags;
183 	struct cam_path *path;
184 	struct sbp_target *target;
185 	struct fwdma_alloc dma;
186 	struct sbp_login_res *login;
187 	struct callout login_callout;
188 	struct sbp_ocb *ocb;
189 	STAILQ_HEAD(, sbp_ocb) ocbs;
190 	STAILQ_HEAD(, sbp_ocb) free_ocbs;
191 	char vendor[32];
192 	char product[32];
193 	char revision[10];
194 };
195 
196 struct sbp_target {
197 	int target_id;
198 	int num_lun;
199 	struct sbp_dev	**luns;
200 	struct sbp_softc *sbp;
201 	struct fw_device *fwdev;
202 	u_int32_t mgm_hi, mgm_lo;
203 	struct sbp_ocb *mgm_ocb_cur;
204 	STAILQ_HEAD(, sbp_ocb) mgm_ocb_queue;
205 	struct callout mgm_ocb_timeout;
206 	struct callout scan_callout;
207 	STAILQ_HEAD(, fw_xfer) xferlist;
208 	int n_xfer;
209 };
210 
211 struct sbp_softc {
212 	struct firewire_dev_comm fd;
213 	struct cam_sim  *sim;
214 	struct cam_path  *path;
215 	struct sbp_target targets[SBP_NUM_TARGETS];
216 	struct fw_bind fwb;
217 	bus_dma_tag_t	dmat;
218 	struct timeval last_busreset;
219 #define SIMQ_FREEZED 1
220 	int flags;
221 };
222 
223 static void sbp_post_explore (void *);
224 static void sbp_recv (struct fw_xfer *);
225 static void sbp_mgm_callback (struct fw_xfer *);
226 #if 0
227 static void sbp_cmd_callback (struct fw_xfer *);
228 #endif
229 static void sbp_orb_pointer (struct sbp_dev *, struct sbp_ocb *);
230 static void sbp_execute_ocb (void *,  bus_dma_segment_t *, int, int);
231 static void sbp_free_ocb (struct sbp_dev *, struct sbp_ocb *);
232 static void sbp_abort_ocb (struct sbp_ocb *, int);
233 static void sbp_abort_all_ocbs (struct sbp_dev *, int);
234 static struct fw_xfer * sbp_write_cmd (struct sbp_dev *, int, int);
235 static struct sbp_ocb * sbp_get_ocb (struct sbp_dev *);
236 static struct sbp_ocb * sbp_enqueue_ocb (struct sbp_dev *, struct sbp_ocb *);
237 static struct sbp_ocb * sbp_dequeue_ocb (struct sbp_dev *, struct sbp_status *);
238 static void sbp_cam_detach_sdev(struct sbp_dev *);
239 static void sbp_free_sdev(struct sbp_dev *);
240 static void sbp_cam_detach_target (struct sbp_target *);
241 static void sbp_free_target (struct sbp_target *);
242 static void sbp_mgm_timeout (void *arg);
243 static void sbp_timeout (void *arg);
244 static void sbp_mgm_orb (struct sbp_dev *, int, struct sbp_ocb *);
245 
246 MALLOC_DEFINE(M_SBP, "sbp", "SBP-II/FireWire");
247 
248 /* cam related functions */
249 static void	sbp_action(struct cam_sim *sim, union ccb *ccb);
250 static void	sbp_poll(struct cam_sim *sim);
251 static void	sbp_cam_scan_lun(struct cam_periph *, union ccb *);
252 static void	sbp_cam_scan_target(void *arg);
253 
254 static char *orb_status0[] = {
255 	/* 0 */ "No additional information to report",
256 	/* 1 */ "Request type not supported",
257 	/* 2 */ "Speed not supported",
258 	/* 3 */ "Page size not supported",
259 	/* 4 */ "Access denied",
260 	/* 5 */ "Logical unit not supported",
261 	/* 6 */ "Maximum payload too small",
262 	/* 7 */ "Reserved for future standardization",
263 	/* 8 */ "Resources unavailable",
264 	/* 9 */ "Function rejected",
265 	/* A */ "Login ID not recognized",
266 	/* B */ "Dummy ORB completed",
267 	/* C */ "Request aborted",
268 	/* FF */ "Unspecified error"
269 #define MAX_ORB_STATUS0 0xd
270 };
271 
272 static char *orb_status1_object[] = {
273 	/* 0 */ "Operation request block (ORB)",
274 	/* 1 */ "Data buffer",
275 	/* 2 */ "Page table",
276 	/* 3 */ "Unable to specify"
277 };
278 
279 static char *orb_status1_serial_bus_error[] = {
280 	/* 0 */ "Missing acknowledge",
281 	/* 1 */ "Reserved; not to be used",
282 	/* 2 */ "Time-out error",
283 	/* 3 */ "Reserved; not to be used",
284 	/* 4 */ "Busy retry limit exceeded(X)",
285 	/* 5 */ "Busy retry limit exceeded(A)",
286 	/* 6 */ "Busy retry limit exceeded(B)",
287 	/* 7 */ "Reserved for future standardization",
288 	/* 8 */ "Reserved for future standardization",
289 	/* 9 */ "Reserved for future standardization",
290 	/* A */ "Reserved for future standardization",
291 	/* B */ "Tardy retry limit exceeded",
292 	/* C */ "Conflict error",
293 	/* D */ "Data error",
294 	/* E */ "Type error",
295 	/* F */ "Address error"
296 };
297 
298 /*
299  * sbp_probe()
300  */
301 static int
302 sbp_probe(device_t dev)
303 {
304 	device_t pa;
305 
306 SBP_DEBUG(0)
307 	kprintf("sbp_probe\n");
308 END_DEBUG
309 
310 	pa = device_get_parent(dev);
311 	if(device_get_unit(dev) != device_get_unit(pa)){
312 		return(ENXIO);
313 	}
314 
315 	device_set_desc(dev, "SBP-2/SCSI over FireWire");
316 
317 	if (bootverbose)
318 		debug = bootverbose;
319 	return (0);
320 }
321 
322 static void
323 sbp_show_sdev_info(struct sbp_dev *sdev, int new)
324 {
325 	struct fw_device *fwdev;
326 
327 	kprintf("%s:%d:%d ",
328 		device_get_nameunit(sdev->target->sbp->fd.dev),
329 		sdev->target->target_id,
330 		sdev->lun_id
331 	);
332 	if (new == 2) {
333 		return;
334 	}
335 	fwdev = sdev->target->fwdev;
336 	kprintf("ordered:%d type:%d EUI:%08x%08x node:%d "
337 		"speed:%d maxrec:%d",
338 		(sdev->type & 0x40) >> 6,
339 		(sdev->type & 0x1f),
340 		fwdev->eui.hi,
341 		fwdev->eui.lo,
342 		fwdev->dst,
343 		fwdev->speed,
344 		fwdev->maxrec
345 	);
346 	if (new)
347 		kprintf(" new!\n");
348 	else
349 		kprintf("\n");
350 	sbp_show_sdev_info(sdev, 2);
351 	kprintf("'%s' '%s' '%s'\n", sdev->vendor, sdev->product, sdev->revision);
352 }
353 
354 static struct {
355 	int bus;
356 	int target;
357 	struct fw_eui64 eui;
358 } wired[] = {
359 	/* Bus	Target	EUI64 */
360 #if 0
361 	{0,	2,	{0x00018ea0, 0x01fd0154}},	/* Logitec HDD */
362 	{0,	0,	{0x00018ea6, 0x00100682}},	/* Logitec DVD */
363 	{0,	1,	{0x00d03200, 0xa412006a}},	/* Yano HDD */
364 #endif
365 	{-1,	-1,	{0,0}}
366 };
367 
368 static int
369 sbp_new_target(struct sbp_softc *sbp, struct fw_device *fwdev)
370 {
371 	int bus, i, target=-1;
372 	char w[SBP_NUM_TARGETS];
373 
374 	bzero(w, sizeof(w));
375 	bus = device_get_unit(sbp->fd.dev);
376 
377 	/* XXX wired-down configuration should be gotten from
378 					tunable or device hint */
379 	for (i = 0; wired[i].bus >= 0; i ++) {
380 		if (wired[i].bus == bus) {
381 			w[wired[i].target] = 1;
382 			if (wired[i].eui.hi == fwdev->eui.hi &&
383 					wired[i].eui.lo == fwdev->eui.lo)
384 				target = wired[i].target;
385 		}
386 	}
387 	if (target >= 0) {
388 		if(target < SBP_NUM_TARGETS &&
389 				sbp->targets[target].fwdev == NULL)
390 			return(target);
391 		device_printf(sbp->fd.dev,
392 			"target %d is not free for %08x:%08x\n",
393 			target, fwdev->eui.hi, fwdev->eui.lo);
394 		target = -1;
395 	}
396 	/* non-wired target */
397 	for (i = 0; i < SBP_NUM_TARGETS; i ++)
398 		if (sbp->targets[i].fwdev == NULL && w[i] == 0) {
399 			target = i;
400 			break;
401 		}
402 
403 	return target;
404 }
405 
406 static void
407 sbp_alloc_lun(struct sbp_target *target)
408 {
409 	struct crom_context cc;
410 	struct csrreg *reg;
411 	struct sbp_dev *sdev, **newluns;
412 	struct sbp_softc *sbp;
413 	int maxlun, lun, i;
414 
415 	sbp = target->sbp;
416 	crom_init_context(&cc, target->fwdev->csrrom);
417 	/* XXX shoud parse appropriate unit directories only */
418 	maxlun = -1;
419 	while (cc.depth >= 0) {
420 		reg = crom_search_key(&cc, CROM_LUN);
421 		if (reg == NULL)
422 			break;
423 		lun = reg->val & 0xffff;
424 SBP_DEBUG(0)
425 		kprintf("target %d lun %d found\n", target->target_id, lun);
426 END_DEBUG
427 		if (maxlun < lun)
428 			maxlun = lun;
429 		crom_next(&cc);
430 	}
431 	if (maxlun < 0)
432 		kprintf("%s:%d no LUN found\n",
433 		    device_get_nameunit(target->sbp->fd.dev),
434 		    target->target_id);
435 
436 	maxlun ++;
437 	if (maxlun >= SBP_NUM_LUNS)
438 		maxlun = SBP_NUM_LUNS;
439 
440 	/* Invalidiate stale devices */
441 	for (lun = 0; lun < target->num_lun; lun ++) {
442 		sdev = target->luns[lun];
443 		if (sdev == NULL)
444 			continue;
445 		sdev->flags &= ~VALID_LUN;
446 		if (lun >= maxlun) {
447 			/* lost device */
448 			sbp_cam_detach_sdev(sdev);
449 			sbp_free_sdev(sdev);
450 		}
451 	}
452 
453 	/* Reallocate */
454 	if (maxlun != target->num_lun) {
455 		/*
456 		 * note: krealloc() does not support M_ZERO.  We must zero
457 		 * the extended region manually.
458 		 */
459 		newluns = krealloc(target->luns,
460 				sizeof(struct sbp_dev *) * maxlun,
461 				M_SBP, M_WAITOK);
462 
463 		if (maxlun > target->num_lun) {
464 			bzero(&newluns[target->num_lun],
465 			    sizeof(struct sbp_dev *) *
466 			     (maxlun - target->num_lun));
467 		}
468 		target->luns = newluns;
469 		target->num_lun = maxlun;
470 	}
471 
472 	crom_init_context(&cc, target->fwdev->csrrom);
473 	while (cc.depth >= 0) {
474 		int new = 0;
475 
476 		reg = crom_search_key(&cc, CROM_LUN);
477 		if (reg == NULL)
478 			break;
479 		lun = reg->val & 0xffff;
480 		if (lun >= SBP_NUM_LUNS) {
481 			kprintf("too large lun %d\n", lun);
482 			goto next;
483 		}
484 
485 		sdev = target->luns[lun];
486 		if (sdev == NULL) {
487 			sdev = kmalloc(sizeof(struct sbp_dev),
488 			    M_SBP, M_WAITOK | M_ZERO);
489 			target->luns[lun] = sdev;
490 			sdev->lun_id = lun;
491 			sdev->target = target;
492 			STAILQ_INIT(&sdev->ocbs);
493 			CALLOUT_INIT(&sdev->login_callout);
494 			sdev->status = SBP_DEV_RESET;
495 			new = 1;
496 		}
497 		sdev->flags |= VALID_LUN;
498 		sdev->type = (reg->val & 0xff0000) >> 16;
499 
500 		if (new == 0)
501 			goto next;
502 
503 		fwdma_malloc(sbp->fd.fc,
504 			/* alignment */ sizeof(u_int32_t),
505 			SBP_DMA_SIZE, &sdev->dma, BUS_DMA_NOWAIT);
506 		if (sdev->dma.v_addr == NULL) {
507 			kprintf("%s: dma space allocation failed\n",
508 							__func__);
509 			kfree(sdev, M_SBP);
510 			target->luns[lun] = NULL;
511 			goto next;
512 		}
513 		sdev->login = (struct sbp_login_res *) sdev->dma.v_addr;
514 		sdev->ocb = (struct sbp_ocb *)
515 				((char *)sdev->dma.v_addr + SBP_LOGIN_SIZE);
516 		bzero((char *)sdev->ocb,
517 			sizeof (struct sbp_ocb) * SBP_QUEUE_LEN);
518 
519 		STAILQ_INIT(&sdev->free_ocbs);
520 		for (i = 0; i < SBP_QUEUE_LEN; i++) {
521 			struct sbp_ocb *ocb;
522 			ocb = &sdev->ocb[i];
523 			ocb->bus_addr = sdev->dma.bus_addr
524 				+ SBP_LOGIN_SIZE
525 				+ sizeof(struct sbp_ocb) * i
526 				+ offsetof(struct sbp_ocb, orb[0]);
527 			if (bus_dmamap_create(sbp->dmat, 0, &ocb->dmamap)) {
528 				kprintf("sbp_attach: cannot create dmamap\n");
529 				/* XXX */
530 				goto next;
531 			}
532 			sbp_free_ocb(sdev, ocb);
533 		}
534 next:
535 		crom_next(&cc);
536 	}
537 
538 	for (lun = 0; lun < target->num_lun; lun ++) {
539 		sdev = target->luns[lun];
540 		if (sdev != NULL && (sdev->flags & VALID_LUN) == 0) {
541 			sbp_cam_detach_sdev(sdev);
542 			sbp_free_sdev(sdev);
543 			target->luns[lun] = NULL;
544 		}
545 	}
546 }
547 
548 static struct sbp_target *
549 sbp_alloc_target(struct sbp_softc *sbp, struct fw_device *fwdev)
550 {
551 	int i;
552 	struct sbp_target *target;
553 	struct crom_context cc;
554 	struct csrreg *reg;
555 
556 SBP_DEBUG(1)
557 	kprintf("sbp_alloc_target\n");
558 END_DEBUG
559 	i = sbp_new_target(sbp, fwdev);
560 	if (i < 0) {
561 		device_printf(sbp->fd.dev, "increase SBP_NUM_TARGETS!\n");
562 		return NULL;
563 	}
564 	/* new target */
565 	target = &sbp->targets[i];
566 	target->sbp = sbp;
567 	target->fwdev = fwdev;
568 	target->target_id = i;
569 	/* XXX we may want to reload mgm port after each bus reset */
570 	/* XXX there might be multiple management agents */
571 	crom_init_context(&cc, target->fwdev->csrrom);
572 	reg = crom_search_key(&cc, CROM_MGM);
573 	if (reg == NULL || reg->val == 0) {
574 		kprintf("NULL management address\n");
575 		target->fwdev = NULL;
576 		return NULL;
577 	}
578 	target->mgm_hi = 0xffff;
579 	target->mgm_lo = 0xf0000000 | (reg->val << 2);
580 	target->mgm_ocb_cur = NULL;
581 SBP_DEBUG(1)
582 	kprintf("target:%d mgm_port: %x\n", i, target->mgm_lo);
583 END_DEBUG
584 	STAILQ_INIT(&target->xferlist);
585 	target->n_xfer = 0;
586 	STAILQ_INIT(&target->mgm_ocb_queue);
587 	CALLOUT_INIT(&target->mgm_ocb_timeout);
588 	CALLOUT_INIT(&target->scan_callout);
589 
590 	target->luns = NULL;
591 	target->num_lun = 0;
592 	return target;
593 }
594 
595 static void
596 sbp_probe_lun(struct sbp_dev *sdev)
597 {
598 	struct fw_device *fwdev;
599 	struct crom_context c, *cc = &c;
600 	struct csrreg *reg;
601 
602 	bzero(sdev->vendor, sizeof(sdev->vendor));
603 	bzero(sdev->product, sizeof(sdev->product));
604 
605 	fwdev = sdev->target->fwdev;
606 	crom_init_context(cc, fwdev->csrrom);
607 	/* get vendor string */
608 	crom_search_key(cc, CSRKEY_VENDOR);
609 	crom_next(cc);
610 	crom_parse_text(cc, sdev->vendor, sizeof(sdev->vendor));
611 	/* skip to the unit directory for SBP-2 */
612 	while ((reg = crom_search_key(cc, CSRKEY_VER)) != NULL) {
613 		if (reg->val == CSRVAL_T10SBP2)
614 			break;
615 		crom_next(cc);
616 	}
617 	/* get firmware revision */
618 	reg = crom_search_key(cc, CSRKEY_FIRM_VER);
619 	if (reg != NULL)
620 		ksnprintf(sdev->revision, sizeof(sdev->revision),
621 						"%06x", reg->val);
622 	/* get product string */
623 	crom_search_key(cc, CSRKEY_MODEL);
624 	crom_next(cc);
625 	crom_parse_text(cc, sdev->product, sizeof(sdev->product));
626 }
627 
628 static void
629 sbp_login_callout(void *arg)
630 {
631 	struct sbp_dev *sdev = (struct sbp_dev *)arg;
632 	sbp_mgm_orb(sdev, ORB_FUN_LGI, NULL);
633 }
634 
635 static void
636 sbp_login(struct sbp_dev *sdev)
637 {
638 	struct timeval delta;
639 	struct timeval t;
640 	int ticks = 0;
641 
642 	microtime(&delta);
643 	timevalsub(&delta, &sdev->target->sbp->last_busreset);
644 	t.tv_sec = login_delay / 1000;
645 	t.tv_usec = (login_delay % 1000) * 1000;
646 	timevalsub(&t, &delta);
647 	if (t.tv_sec >= 0 && t.tv_usec > 0)
648 		ticks = (t.tv_sec * 1000 + t.tv_usec / 1000) * hz / 1000;
649 SBP_DEBUG(0)
650 	kprintf("%s: sec = %ld usec = %ld ticks = %d\n", __func__,
651 	    t.tv_sec, t.tv_usec, ticks);
652 END_DEBUG
653 	callout_reset(&sdev->login_callout, ticks,
654 			sbp_login_callout, (void *)(sdev));
655 }
656 
657 #define SBP_FWDEV_ALIVE(fwdev) (((fwdev)->status == FWDEVATTACHED) \
658 	&& crom_has_specver((fwdev)->csrrom, CSRVAL_ANSIT10, CSRVAL_T10SBP2))
659 
660 static void
661 sbp_probe_target(void *arg)
662 {
663 	struct sbp_target *target = (struct sbp_target *)arg;
664 	struct sbp_softc *sbp;
665 	struct sbp_dev *sdev;
666 	struct firewire_comm *fc;
667 	int i, alive;
668 
669 	alive = SBP_FWDEV_ALIVE(target->fwdev);
670 SBP_DEBUG(1)
671 	kprintf("sbp_probe_target %d\n", target->target_id);
672 	if (!alive)
673 		kprintf("not alive\n");
674 END_DEBUG
675 
676 	sbp = target->sbp;
677 	fc = target->sbp->fd.fc;
678 	sbp_alloc_lun(target);
679 
680 	/* XXX untimeout mgm_ocb and dequeue */
681 	for (i=0; i < target->num_lun; i++) {
682 		sdev = target->luns[i];
683 		if (sdev == NULL)
684 			continue;
685 		if (alive && (sdev->status != SBP_DEV_DEAD)) {
686 			if (sdev->path != NULL) {
687 				xpt_freeze_devq(sdev->path, 1);
688 				sdev->freeze ++;
689 			}
690 			sbp_probe_lun(sdev);
691 SBP_DEBUG(0)
692 			sbp_show_sdev_info(sdev,
693 					(sdev->status == SBP_DEV_RESET));
694 END_DEBUG
695 
696 			sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
697 			switch (sdev->status) {
698 			case SBP_DEV_RESET:
699 				/* new or revived target */
700 				if (auto_login)
701 					sbp_login(sdev);
702 				break;
703 			case SBP_DEV_TOATTACH:
704 			case SBP_DEV_PROBE:
705 			case SBP_DEV_ATTACHED:
706 			case SBP_DEV_RETRY:
707 			default:
708 				sbp_mgm_orb(sdev, ORB_FUN_RCN, NULL);
709 				break;
710 			}
711 		} else {
712 			switch (sdev->status) {
713 			case SBP_DEV_ATTACHED:
714 SBP_DEBUG(0)
715 				/* the device has gone */
716 				sbp_show_sdev_info(sdev, 2);
717 				kprintf("lost target\n");
718 END_DEBUG
719 				if (sdev->path) {
720 					xpt_freeze_devq(sdev->path, 1);
721 					sdev->freeze ++;
722 				}
723 				sdev->status = SBP_DEV_RETRY;
724 				sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
725 				break;
726 			case SBP_DEV_PROBE:
727 			case SBP_DEV_TOATTACH:
728 				sdev->status = SBP_DEV_RESET;
729 				break;
730 			case SBP_DEV_RETRY:
731 			case SBP_DEV_RESET:
732 			case SBP_DEV_DEAD:
733 				break;
734 			}
735 		}
736 	}
737 }
738 
739 static void
740 sbp_post_busreset(void *arg)
741 {
742 	struct sbp_softc *sbp;
743 
744 	sbp = (struct sbp_softc *)arg;
745 SBP_DEBUG(0)
746 	kprintf("sbp_post_busreset\n");
747 END_DEBUG
748 	if ((sbp->sim->flags & SIMQ_FREEZED) == 0) {
749 		xpt_freeze_simq(sbp->sim, /*count*/1);
750 		sbp->sim->flags |= SIMQ_FREEZED;
751 	}
752 	microtime(&sbp->last_busreset);
753 }
754 
755 static void
756 sbp_post_explore(void *arg)
757 {
758 	struct sbp_softc *sbp = (struct sbp_softc *)arg;
759 	struct sbp_target *target;
760 	struct fw_device *fwdev;
761 	int i, alive;
762 
763 SBP_DEBUG(0)
764 	kprintf("sbp_post_explore\n");
765 END_DEBUG
766 #if 0
767 	if (sbp_cold > 0)
768 		sbp_cold --;
769 #endif
770 
771 #if 0
772 	/*
773 	 * XXX don't let CAM the bus rest.
774 	 * CAM tries to do something with freezed (DEV_RETRY) devices.
775 	 */
776 	xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
777 #endif
778 
779 	/* Gabage Collection */
780 	for(i = 0 ; i < SBP_NUM_TARGETS ; i ++){
781 		target = &sbp->targets[i];
782 		STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link)
783 			if (target->fwdev == NULL || target->fwdev == fwdev)
784 				break;
785 		if (fwdev == NULL) {
786 			/* device has removed in lower driver */
787 			sbp_cam_detach_target(target);
788 			sbp_free_target(target);
789 		}
790 	}
791 	/* traverse device list */
792 	STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link) {
793 SBP_DEBUG(0)
794 		kprintf("sbp_post_explore: EUI:%08x%08x ",
795 				fwdev->eui.hi, fwdev->eui.lo);
796 		if (fwdev->status != FWDEVATTACHED)
797 			kprintf("not attached, state=%d.\n", fwdev->status);
798 		else
799 			kprintf("attached\n");
800 END_DEBUG
801 		alive = SBP_FWDEV_ALIVE(fwdev);
802 		for(i = 0 ; i < SBP_NUM_TARGETS ; i ++){
803 			target = &sbp->targets[i];
804 			if(target->fwdev == fwdev ) {
805 				/* known target */
806 				break;
807 			}
808 		}
809 		if(i == SBP_NUM_TARGETS){
810 			if (alive) {
811 				/* new target */
812 				target = sbp_alloc_target(sbp, fwdev);
813 				if (target == NULL)
814 					continue;
815 			} else {
816 				continue;
817 			}
818 		}
819 		sbp_probe_target((void *)target);
820 		if (target->num_lun == 0)
821 			sbp_free_target(target);
822 	}
823 	xpt_release_simq(sbp->sim, /*run queue*/TRUE);
824 	sbp->sim->flags &= ~SIMQ_FREEZED;
825 }
826 
827 #if NEED_RESPONSE
828 static void
829 sbp_loginres_callback(struct fw_xfer *xfer){
830 	struct sbp_dev *sdev;
831 	sdev = (struct sbp_dev *)xfer->sc;
832 SBP_DEBUG(1)
833 	sbp_show_sdev_info(sdev, 2);
834 	kprintf("sbp_loginres_callback\n");
835 END_DEBUG
836 	/* recycle */
837 	crit_enter();
838 	STAILQ_INSERT_TAIL(&sdev->target->sbp->fwb.xferlist, xfer, link);
839 	crit_exit();
840 	return;
841 }
842 #endif
843 
844 static __inline void
845 sbp_xfer_free(struct fw_xfer *xfer)
846 {
847 	struct sbp_dev *sdev;
848 
849 	sdev = (struct sbp_dev *)xfer->sc;
850 	fw_xfer_unload(xfer);
851 	crit_enter();
852 	STAILQ_INSERT_TAIL(&sdev->target->xferlist, xfer, link);
853 	crit_exit();
854 }
855 
856 static void
857 sbp_reset_start_callback(struct fw_xfer *xfer)
858 {
859 	struct sbp_dev *tsdev, *sdev = (struct sbp_dev *)xfer->sc;
860 	struct sbp_target *target = sdev->target;
861 	int i;
862 
863 	if (xfer->resp != 0) {
864 		sbp_show_sdev_info(sdev, 2);
865 		kprintf("sbp_reset_start failed: resp=%d\n", xfer->resp);
866 	}
867 
868 	for (i = 0; i < target->num_lun; i++) {
869 		tsdev = target->luns[i];
870 		if (tsdev != NULL && tsdev->status == SBP_DEV_LOGIN)
871 			sbp_login(tsdev);
872 	}
873 }
874 
875 static void
876 sbp_reset_start(struct sbp_dev *sdev)
877 {
878 	struct fw_xfer *xfer;
879 	struct fw_pkt *fp;
880 
881 SBP_DEBUG(0)
882 	sbp_show_sdev_info(sdev, 2);
883 	kprintf("sbp_reset_start\n");
884 END_DEBUG
885 
886 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
887 	xfer->act.hand = sbp_reset_start_callback;
888 	fp = &xfer->send.hdr;
889 	fp->mode.wreqq.dest_hi = 0xffff;
890 	fp->mode.wreqq.dest_lo = 0xf0000000 | RESET_START;
891 	fp->mode.wreqq.data = htonl(0xf);
892 	fw_asyreq(xfer->fc, -1, xfer);
893 }
894 
895 static void
896 sbp_mgm_callback(struct fw_xfer *xfer)
897 {
898 	struct sbp_dev *sdev;
899 	int resp;
900 
901 	sdev = (struct sbp_dev *)xfer->sc;
902 
903 SBP_DEBUG(1)
904 	sbp_show_sdev_info(sdev, 2);
905 	kprintf("sbp_mgm_callback\n");
906 END_DEBUG
907 	resp = xfer->resp;
908 	sbp_xfer_free(xfer);
909 #if 0
910 	if (resp != 0) {
911 		sbp_show_sdev_info(sdev, 2);
912 		kprintf("management ORB failed(%d) ... RESET_START\n", resp);
913 		sbp_reset_start(sdev);
914 	}
915 #endif
916 	return;
917 }
918 
919 static struct sbp_dev *
920 sbp_next_dev(struct sbp_target *target, int lun)
921 {
922 	struct sbp_dev **sdevp;
923 	int i;
924 
925 	for (i = lun, sdevp = &target->luns[lun]; i < target->num_lun;
926 	    i++, sdevp++)
927 		if (*sdevp != NULL && (*sdevp)->status == SBP_DEV_PROBE)
928 			return(*sdevp);
929 	return(NULL);
930 }
931 
932 #define SCAN_PRI 1
933 static void
934 sbp_cam_scan_lun(struct cam_periph *periph, union ccb *ccb)
935 {
936 	struct sbp_target *target;
937 	struct sbp_dev *sdev;
938 
939 	sdev = (struct sbp_dev *) ccb->ccb_h.ccb_sdev_ptr;
940 	target = sdev->target;
941 SBP_DEBUG(0)
942 	sbp_show_sdev_info(sdev, 2);
943 	kprintf("sbp_cam_scan_lun\n");
944 END_DEBUG
945 	if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
946 		sdev->status = SBP_DEV_ATTACHED;
947 	} else {
948 		sbp_show_sdev_info(sdev, 2);
949 		kprintf("scan failed\n");
950 	}
951 	sdev = sbp_next_dev(target, sdev->lun_id + 1);
952 	if (sdev == NULL) {
953 		kfree(ccb, M_SBP);
954 		return;
955 	}
956 	/* reuse ccb */
957 	xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
958 	ccb->ccb_h.ccb_sdev_ptr = sdev;
959 	xpt_action(ccb);
960 	xpt_release_devq(sdev->path, sdev->freeze, TRUE);
961 	sdev->freeze = 1;
962 }
963 
964 static void
965 sbp_cam_scan_target(void *arg)
966 {
967 	struct sbp_target *target = (struct sbp_target *)arg;
968 	struct sbp_dev *sdev;
969 	union ccb *ccb;
970 
971 	sdev = sbp_next_dev(target, 0);
972 	if (sdev == NULL) {
973 		kprintf("sbp_cam_scan_target: nothing to do for target%d\n",
974 							target->target_id);
975 		return;
976 	}
977 SBP_DEBUG(0)
978 	sbp_show_sdev_info(sdev, 2);
979 	kprintf("sbp_cam_scan_target\n");
980 END_DEBUG
981 	ccb = kmalloc(sizeof(union ccb), M_SBP, M_WAITOK | M_ZERO);
982 	xpt_setup_ccb(&ccb->ccb_h, sdev->path, SCAN_PRI);
983 	ccb->ccb_h.func_code = XPT_SCAN_LUN;
984 	ccb->ccb_h.cbfcnp = sbp_cam_scan_lun;
985 	ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
986 	ccb->crcn.flags = CAM_FLAG_NONE;
987 	ccb->ccb_h.ccb_sdev_ptr = sdev;
988 
989 	/* The scan is in progress now. */
990 	xpt_action(ccb);
991 	xpt_release_devq(sdev->path, sdev->freeze, TRUE);
992 	sdev->freeze = 1;
993 }
994 
995 static __inline void
996 sbp_scan_dev(struct sbp_dev *sdev)
997 {
998 	sdev->status = SBP_DEV_PROBE;
999 	callout_reset(&sdev->target->scan_callout, scan_delay * hz / 1000,
1000 			sbp_cam_scan_target, (void *)sdev->target);
1001 }
1002 
1003 static void
1004 sbp_do_attach(struct fw_xfer *xfer)
1005 {
1006 	struct sbp_dev *sdev;
1007 	struct sbp_target *target;
1008 	struct sbp_softc *sbp;
1009 
1010 	sdev = (struct sbp_dev *)xfer->sc;
1011 	target = sdev->target;
1012 	sbp = target->sbp;
1013 SBP_DEBUG(0)
1014 	sbp_show_sdev_info(sdev, 2);
1015 	kprintf("sbp_do_attach\n");
1016 END_DEBUG
1017 	sbp_xfer_free(xfer);
1018 
1019 	if (sdev->path == NULL)
1020 		xpt_create_path(&sdev->path, xpt_periph,
1021 			cam_sim_path(target->sbp->sim),
1022 			target->target_id, sdev->lun_id);
1023 
1024 #if 0
1025 	/*
1026 	 * Let CAM scan the bus if we are in the boot process.
1027 	 * XXX xpt_scan_bus cannot detect LUN larger than 0
1028 	 * if LUN 0 doesn't exists.
1029 	 */
1030 	if (sbp_cold > 0) {
1031 		sdev->status = SBP_DEV_ATTACHED;
1032 		return;
1033 	}
1034 #endif
1035 
1036 	sbp_scan_dev(sdev);
1037 	return;
1038 }
1039 
1040 static void
1041 sbp_agent_reset_callback(struct fw_xfer *xfer)
1042 {
1043 	struct sbp_dev *sdev;
1044 
1045 	sdev = (struct sbp_dev *)xfer->sc;
1046 SBP_DEBUG(1)
1047 	sbp_show_sdev_info(sdev, 2);
1048 	kprintf("%s\n", __func__);
1049 END_DEBUG
1050 	if (xfer->resp != 0) {
1051 		sbp_show_sdev_info(sdev, 2);
1052 		kprintf("%s: resp=%d\n", __func__, xfer->resp);
1053 	}
1054 
1055 	sbp_xfer_free(xfer);
1056 	if (sdev->path) {
1057 		xpt_release_devq(sdev->path, sdev->freeze, TRUE);
1058 		sdev->freeze = 0;
1059 	}
1060 }
1061 
1062 static void
1063 sbp_agent_reset(struct sbp_dev *sdev)
1064 {
1065 	struct fw_xfer *xfer;
1066 	struct fw_pkt *fp;
1067 
1068 SBP_DEBUG(0)
1069 	sbp_show_sdev_info(sdev, 2);
1070 	kprintf("sbp_agent_reset\n");
1071 END_DEBUG
1072 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x04);
1073 	if (xfer == NULL)
1074 		return;
1075 	if (sdev->status == SBP_DEV_ATTACHED || sdev->status == SBP_DEV_PROBE)
1076 		xfer->act.hand = sbp_agent_reset_callback;
1077 	else
1078 		xfer->act.hand = sbp_do_attach;
1079 	fp = &xfer->send.hdr;
1080 	fp->mode.wreqq.data = htonl(0xf);
1081 	fw_asyreq(xfer->fc, -1, xfer);
1082 	sbp_abort_all_ocbs(sdev, CAM_BDR_SENT);
1083 }
1084 
1085 static void
1086 sbp_busy_timeout_callback(struct fw_xfer *xfer)
1087 {
1088 	struct sbp_dev *sdev;
1089 
1090 	sdev = (struct sbp_dev *)xfer->sc;
1091 SBP_DEBUG(1)
1092 	sbp_show_sdev_info(sdev, 2);
1093 	kprintf("sbp_busy_timeout_callback\n");
1094 END_DEBUG
1095 	sbp_xfer_free(xfer);
1096 	sbp_agent_reset(sdev);
1097 }
1098 
1099 static void
1100 sbp_busy_timeout(struct sbp_dev *sdev)
1101 {
1102 	struct fw_pkt *fp;
1103 	struct fw_xfer *xfer;
1104 SBP_DEBUG(0)
1105 	sbp_show_sdev_info(sdev, 2);
1106 	kprintf("sbp_busy_timeout\n");
1107 END_DEBUG
1108 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
1109 
1110 	xfer->act.hand = sbp_busy_timeout_callback;
1111 	fp = &xfer->send.hdr;
1112 	fp->mode.wreqq.dest_hi = 0xffff;
1113 	fp->mode.wreqq.dest_lo = 0xf0000000 | BUSY_TIMEOUT;
1114 	fp->mode.wreqq.data = htonl((1 << (13+12)) | 0xf);
1115 	fw_asyreq(xfer->fc, -1, xfer);
1116 }
1117 
1118 static void
1119 sbp_orb_pointer_callback(struct fw_xfer *xfer)
1120 {
1121 	struct sbp_dev *sdev;
1122 	sdev = (struct sbp_dev *)xfer->sc;
1123 
1124 SBP_DEBUG(1)
1125 	sbp_show_sdev_info(sdev, 2);
1126 	kprintf("%s\n", __func__);
1127 END_DEBUG
1128 	if (xfer->resp != 0) {
1129 		/* XXX */
1130 		kprintf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1131 	}
1132 	sbp_xfer_free(xfer);
1133 	sdev->flags &= ~ORB_POINTER_ACTIVE;
1134 
1135 	if ((sdev->flags & ORB_POINTER_NEED) != 0) {
1136 		struct sbp_ocb *ocb;
1137 
1138 		sdev->flags &= ~ORB_POINTER_NEED;
1139 		ocb = STAILQ_FIRST(&sdev->ocbs);
1140 		if (ocb != NULL)
1141 			sbp_orb_pointer(sdev, ocb);
1142 	}
1143 	return;
1144 }
1145 
1146 static void
1147 sbp_orb_pointer(struct sbp_dev *sdev, struct sbp_ocb *ocb)
1148 {
1149 	struct fw_xfer *xfer;
1150 	struct fw_pkt *fp;
1151 SBP_DEBUG(1)
1152 	sbp_show_sdev_info(sdev, 2);
1153 	kprintf("%s: 0x%08x\n", __func__, (u_int32_t)ocb->bus_addr);
1154 END_DEBUG
1155 
1156 	if ((sdev->flags & ORB_POINTER_ACTIVE) != 0) {
1157 SBP_DEBUG(0)
1158 		kprintf("%s: orb pointer active\n", __func__);
1159 END_DEBUG
1160 		sdev->flags |= ORB_POINTER_NEED;
1161 		return;
1162 	}
1163 
1164 	sdev->flags |= ORB_POINTER_ACTIVE;
1165 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0x08);
1166 	if (xfer == NULL)
1167 		return;
1168 	xfer->act.hand = sbp_orb_pointer_callback;
1169 
1170 	fp = &xfer->send.hdr;
1171 	fp->mode.wreqb.len = 8;
1172 	fp->mode.wreqb.extcode = 0;
1173 	xfer->send.payload[0] =
1174 		htonl(((sdev->target->sbp->fd.fc->nodeid | FWLOCALBUS )<< 16));
1175 	xfer->send.payload[1] = htonl((u_int32_t)ocb->bus_addr);
1176 
1177 	if(fw_asyreq(xfer->fc, -1, xfer) != 0){
1178 			sbp_xfer_free(xfer);
1179 			ocb->ccb->ccb_h.status = CAM_REQ_INVALID;
1180 			xpt_done(ocb->ccb);
1181 	}
1182 }
1183 
1184 #if 0
1185 static void
1186 sbp_cmd_callback(struct fw_xfer *xfer)
1187 {
1188 SBP_DEBUG(1)
1189 	struct sbp_dev *sdev;
1190 	sdev = (struct sbp_dev *)xfer->sc;
1191 	sbp_show_sdev_info(sdev, 2);
1192 	kprintf("sbp_cmd_callback\n");
1193 END_DEBUG
1194 	if (xfer->resp != 0) {
1195 		/* XXX */
1196 		kprintf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1197 	}
1198 	sbp_xfer_free(xfer);
1199 	return;
1200 }
1201 
1202 static void
1203 sbp_doorbell(struct sbp_dev *sdev)
1204 {
1205 	struct fw_xfer *xfer;
1206 	struct fw_pkt *fp;
1207 SBP_DEBUG(1)
1208 	sbp_show_sdev_info(sdev, 2);
1209 	kprintf("sbp_doorbell\n");
1210 END_DEBUG
1211 
1212 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x10);
1213 	if (xfer == NULL)
1214 		return;
1215 	xfer->act.hand = sbp_cmd_callback;
1216 	fp = (struct fw_pkt *)xfer->send.buf;
1217 	fp->mode.wreqq.data = htonl(0xf);
1218 	fw_asyreq(xfer->fc, -1, xfer);
1219 }
1220 #endif
1221 
1222 static struct fw_xfer *
1223 sbp_write_cmd(struct sbp_dev *sdev, int tcode, int offset)
1224 {
1225 	struct fw_xfer *xfer;
1226 	struct fw_pkt *fp;
1227 	struct sbp_target *target;
1228 	int new = 0;
1229 
1230 	target = sdev->target;
1231 	crit_enter();
1232 	xfer = STAILQ_FIRST(&target->xferlist);
1233 	if (xfer == NULL) {
1234 		if (target->n_xfer > 5 /* XXX */) {
1235 			kprintf("sbp: no more xfer for this target\n");
1236 			crit_exit();
1237 			return(NULL);
1238 		}
1239 		xfer = fw_xfer_alloc_buf(M_SBP, 8, 0);
1240 		if(xfer == NULL){
1241 			kprintf("sbp: fw_xfer_alloc_buf failed\n");
1242 			crit_exit();
1243 			return NULL;
1244 		}
1245 		target->n_xfer ++;
1246 		if (debug)
1247 			kprintf("sbp: alloc %d xfer\n", target->n_xfer);
1248 		new = 1;
1249 	} else {
1250 		STAILQ_REMOVE_HEAD(&target->xferlist, link);
1251 	}
1252 	crit_exit();
1253 
1254 	microtime(&xfer->tv);
1255 
1256 	if (new) {
1257 		xfer->recv.pay_len = 0;
1258 		xfer->send.spd = min(sdev->target->fwdev->speed, max_speed);
1259 		xfer->fc = sdev->target->sbp->fd.fc;
1260 		xfer->retry_req = fw_asybusy;
1261 	}
1262 
1263 	if (tcode == FWTCODE_WREQB)
1264 		xfer->send.pay_len = 8;
1265 	else
1266 		xfer->send.pay_len = 0;
1267 
1268 	xfer->sc = (caddr_t)sdev;
1269 	fp = &xfer->send.hdr;
1270 	fp->mode.wreqq.dest_hi = sdev->login->cmd_hi;
1271 	fp->mode.wreqq.dest_lo = sdev->login->cmd_lo + offset;
1272 	fp->mode.wreqq.tlrt = 0;
1273 	fp->mode.wreqq.tcode = tcode;
1274 	fp->mode.wreqq.pri = 0;
1275 	fp->mode.wreqq.dst = FWLOCALBUS | sdev->target->fwdev->dst;
1276 
1277 	return xfer;
1278 
1279 }
1280 
1281 static void
1282 sbp_mgm_orb(struct sbp_dev *sdev, int func, struct sbp_ocb *aocb)
1283 {
1284 	struct fw_xfer *xfer;
1285 	struct fw_pkt *fp;
1286 	struct sbp_ocb *ocb;
1287 	struct sbp_target *target;
1288 	int nid;
1289 
1290 	target = sdev->target;
1291 	nid = target->sbp->fd.fc->nodeid | FWLOCALBUS;
1292 
1293 	crit_enter();
1294 	if (func == ORB_FUN_RUNQUEUE) {
1295 		ocb = STAILQ_FIRST(&target->mgm_ocb_queue);
1296 		if (target->mgm_ocb_cur != NULL || ocb == NULL) {
1297 			crit_exit();
1298 			return;
1299 		}
1300 		STAILQ_REMOVE_HEAD(&target->mgm_ocb_queue, ocb);
1301 		goto start;
1302 	}
1303 	if ((ocb = sbp_get_ocb(sdev)) == NULL) {
1304 		crit_exit();
1305 		/* XXX */
1306 		return;
1307 	}
1308 	ocb->flags = OCB_ACT_MGM;
1309 	ocb->sdev = sdev;
1310 
1311 	bzero((void *)ocb->orb, sizeof(ocb->orb));
1312 	ocb->orb[6] = htonl((nid << 16) | SBP_BIND_HI);
1313 	ocb->orb[7] = htonl(SBP_DEV2ADDR(target->target_id, sdev->lun_id));
1314 
1315 SBP_DEBUG(0)
1316 	sbp_show_sdev_info(sdev, 2);
1317 	kprintf("%s\n", orb_fun_name[(func>>16)&0xf]);
1318 END_DEBUG
1319 	switch (func) {
1320 	case ORB_FUN_LGI:
1321 		ocb->orb[0] = ocb->orb[1] = 0; /* password */
1322 		ocb->orb[2] = htonl(nid << 16);
1323 		ocb->orb[3] = htonl(sdev->dma.bus_addr);
1324 		ocb->orb[4] = htonl(ORB_NOTIFY | sdev->lun_id);
1325 		if (ex_login)
1326 			ocb->orb[4] |= htonl(ORB_EXV);
1327 		ocb->orb[5] = htonl(SBP_LOGIN_SIZE);
1328 		fwdma_sync(&sdev->dma, BUS_DMASYNC_PREREAD);
1329 		break;
1330 	case ORB_FUN_ATA:
1331 		ocb->orb[0] = htonl((0 << 16) | 0);
1332 		ocb->orb[1] = htonl(aocb->bus_addr & 0xffffffff);
1333 		/* fall through */
1334 	case ORB_FUN_RCN:
1335 	case ORB_FUN_LGO:
1336 	case ORB_FUN_LUR:
1337 	case ORB_FUN_RST:
1338 	case ORB_FUN_ATS:
1339 		ocb->orb[4] = htonl(ORB_NOTIFY | func | sdev->login->id);
1340 		break;
1341 	}
1342 
1343 	if (target->mgm_ocb_cur != NULL) {
1344 		/* there is a standing ORB */
1345 		STAILQ_INSERT_TAIL(&sdev->target->mgm_ocb_queue, ocb, ocb);
1346 		crit_exit();
1347 		return;
1348 	}
1349 start:
1350 	target->mgm_ocb_cur = ocb;
1351 	crit_exit();
1352 
1353 	callout_reset(&target->mgm_ocb_timeout, 5*hz,
1354 				sbp_mgm_timeout, (caddr_t)ocb);
1355 	xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0);
1356 	if(xfer == NULL){
1357 		return;
1358 	}
1359 	xfer->act.hand = sbp_mgm_callback;
1360 
1361 	fp = &xfer->send.hdr;
1362 	fp->mode.wreqb.dest_hi = sdev->target->mgm_hi;
1363 	fp->mode.wreqb.dest_lo = sdev->target->mgm_lo;
1364 	fp->mode.wreqb.len = 8;
1365 	fp->mode.wreqb.extcode = 0;
1366 	xfer->send.payload[0] = htonl(nid << 16);
1367 	xfer->send.payload[1] = htonl(ocb->bus_addr & 0xffffffff);
1368 SBP_DEBUG(0)
1369 	sbp_show_sdev_info(sdev, 2);
1370 	kprintf("mgm orb: %08x\n", (u_int32_t)ocb->bus_addr);
1371 END_DEBUG
1372 
1373 	fw_asyreq(xfer->fc, -1, xfer);
1374 }
1375 
1376 static void
1377 sbp_print_scsi_cmd(struct sbp_ocb *ocb)
1378 {
1379 	struct ccb_scsiio *csio;
1380 
1381 	csio = &ocb->ccb->csio;
1382 	kprintf("%s:%d:%d XPT_SCSI_IO: "
1383 		"cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
1384 		", flags: 0x%02x, "
1385 		"%db cmd/%db data/%db sense\n",
1386 		device_get_nameunit(ocb->sdev->target->sbp->fd.dev),
1387 		ocb->ccb->ccb_h.target_id, ocb->ccb->ccb_h.target_lun,
1388 		csio->cdb_io.cdb_bytes[0],
1389 		csio->cdb_io.cdb_bytes[1],
1390 		csio->cdb_io.cdb_bytes[2],
1391 		csio->cdb_io.cdb_bytes[3],
1392 		csio->cdb_io.cdb_bytes[4],
1393 		csio->cdb_io.cdb_bytes[5],
1394 		csio->cdb_io.cdb_bytes[6],
1395 		csio->cdb_io.cdb_bytes[7],
1396 		csio->cdb_io.cdb_bytes[8],
1397 		csio->cdb_io.cdb_bytes[9],
1398 		ocb->ccb->ccb_h.flags & CAM_DIR_MASK,
1399 		csio->cdb_len, csio->dxfer_len,
1400 		csio->sense_len);
1401 }
1402 
1403 static void
1404 sbp_scsi_status(struct sbp_status *sbp_status, struct sbp_ocb *ocb)
1405 {
1406 	struct sbp_cmd_status *sbp_cmd_status;
1407 	struct scsi_sense_data *sense;
1408 
1409 	sbp_cmd_status = (struct sbp_cmd_status *)sbp_status->data;
1410 	sense = &ocb->ccb->csio.sense_data;
1411 
1412 SBP_DEBUG(0)
1413 	sbp_print_scsi_cmd(ocb);
1414 	/* XXX need decode status */
1415 	sbp_show_sdev_info(ocb->sdev, 2);
1416 	kprintf("SCSI status %x sfmt %x valid %x key %x code %x qlfr %x len %d\n",
1417 		sbp_cmd_status->status,
1418 		sbp_cmd_status->sfmt,
1419 		sbp_cmd_status->valid,
1420 		sbp_cmd_status->s_key,
1421 		sbp_cmd_status->s_code,
1422 		sbp_cmd_status->s_qlfr,
1423 		sbp_status->len
1424 	);
1425 END_DEBUG
1426 
1427 	switch (sbp_cmd_status->status) {
1428 	case SCSI_STATUS_CHECK_COND:
1429 	case SCSI_STATUS_BUSY:
1430 	case SCSI_STATUS_CMD_TERMINATED:
1431 		if(sbp_cmd_status->sfmt == SBP_SFMT_CURR){
1432 			sense->error_code = SSD_CURRENT_ERROR;
1433 		}else{
1434 			sense->error_code = SSD_DEFERRED_ERROR;
1435 		}
1436 		if(sbp_cmd_status->valid)
1437 			sense->error_code |= SSD_ERRCODE_VALID;
1438 		sense->flags = sbp_cmd_status->s_key;
1439 		if(sbp_cmd_status->mark)
1440 			sense->flags |= SSD_FILEMARK;
1441 		if(sbp_cmd_status->eom)
1442 			sense->flags |= SSD_EOM;
1443 		if(sbp_cmd_status->ill_len)
1444 			sense->flags |= SSD_ILI;
1445 
1446 		bcopy(&sbp_cmd_status->info, &sense->info[0], 4);
1447 
1448 		if (sbp_status->len <= 1)
1449 			/* XXX not scsi status. shouldn't be happened */
1450 			sense->extra_len = 0;
1451 		else if (sbp_status->len <= 4)
1452 			/* add_sense_code(_qual), info, cmd_spec_info */
1453 			sense->extra_len = 6;
1454 		else
1455 			/* fru, sense_key_spec */
1456 			sense->extra_len = 10;
1457 
1458 		bcopy(&sbp_cmd_status->cdb, &sense->cmd_spec_info[0], 4);
1459 
1460 		sense->add_sense_code = sbp_cmd_status->s_code;
1461 		sense->add_sense_code_qual = sbp_cmd_status->s_qlfr;
1462 		sense->fru = sbp_cmd_status->fru;
1463 
1464 		bcopy(&sbp_cmd_status->s_keydep[0],
1465 		    &sense->sense_key_spec[0], 3);
1466 
1467 		ocb->ccb->csio.scsi_status = sbp_cmd_status->status;
1468 		ocb->ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
1469 							| CAM_AUTOSNS_VALID;
1470 /*
1471 {
1472 		u_int8_t j, *tmp;
1473 		tmp = sense;
1474 		for( j = 0 ; j < 32 ; j+=8){
1475 			kprintf("sense %02x%02x %02x%02x %02x%02x %02x%02x\n",
1476 				tmp[j], tmp[j+1], tmp[j+2], tmp[j+3],
1477 				tmp[j+4], tmp[j+5], tmp[j+6], tmp[j+7]);
1478 		}
1479 
1480 }
1481 */
1482 		break;
1483 	default:
1484 		sbp_show_sdev_info(ocb->sdev, 2);
1485 		kprintf("sbp_scsi_status: unknown scsi status 0x%x\n",
1486 						sbp_cmd_status->status);
1487 	}
1488 }
1489 
1490 static void
1491 sbp_fix_inq_data(struct sbp_ocb *ocb)
1492 {
1493 	union ccb *ccb;
1494 	struct sbp_dev *sdev;
1495 	struct scsi_inquiry_data *inq;
1496 
1497 	ccb = ocb->ccb;
1498 	sdev = ocb->sdev;
1499 
1500 	if (ccb->csio.cdb_io.cdb_bytes[1] & SI_EVPD)
1501 		return;
1502 SBP_DEBUG(1)
1503 	sbp_show_sdev_info(sdev, 2);
1504 	kprintf("sbp_fix_inq_data\n");
1505 END_DEBUG
1506 	inq = (struct scsi_inquiry_data *) ccb->csio.data_ptr;
1507 	switch (SID_TYPE(inq)) {
1508 	case T_DIRECT:
1509 #if 0
1510 		/*
1511 		 * XXX Convert Direct Access device to RBC.
1512 		 * I've never seen FireWire DA devices which support READ_6.
1513 		 */
1514 		if (SID_TYPE(inq) == T_DIRECT)
1515 			inq->device |= T_RBC; /*  T_DIRECT == 0 */
1516 #endif
1517 		/* fall through */
1518 	case T_RBC:
1519 		/* enable tagged queuing */
1520 		if (sbp_tags)
1521 			inq->flags |= SID_CmdQue;
1522 		else
1523 			inq->flags &= ~SID_CmdQue;
1524 		/*
1525 		 * Override vendor/product/revision information.
1526 		 * Some devices sometimes return strange strings.
1527 		 */
1528 #if 1
1529 		bcopy(sdev->vendor, inq->vendor, sizeof(inq->vendor));
1530 		bcopy(sdev->product, inq->product, sizeof(inq->product));
1531 		bcopy(sdev->revision+2, inq->revision, sizeof(inq->revision));
1532 #endif
1533 		break;
1534 	}
1535 }
1536 
1537 static void
1538 sbp_recv1(struct fw_xfer *xfer)
1539 {
1540 	struct fw_pkt *rfp;
1541 #if NEED_RESPONSE
1542 	struct fw_pkt *sfp;
1543 #endif
1544 	struct sbp_softc *sbp;
1545 	struct sbp_dev *sdev;
1546 	struct sbp_ocb *ocb;
1547 	struct sbp_login_res *login_res = NULL;
1548 	struct sbp_status *sbp_status;
1549 	struct sbp_target *target;
1550 	int	orb_fun, status_valid0, status_valid, t, l, reset_agent = 0;
1551 	u_int32_t addr;
1552 /*
1553 	u_int32_t *ld;
1554 	ld = xfer->recv.buf;
1555 kprintf("sbp %x %d %d %08x %08x %08x %08x\n",
1556 			xfer->resp, xfer->recv.len, xfer->recv.off, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
1557 kprintf("sbp %08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
1558 kprintf("sbp %08x %08x %08x %08x\n", ntohl(ld[8]), ntohl(ld[9]), ntohl(ld[10]), ntohl(ld[11]));
1559 */
1560 	sbp = (struct sbp_softc *)xfer->sc;
1561 	if (xfer->resp != 0){
1562 		kprintf("sbp_recv: xfer->resp = %d\n", xfer->resp);
1563 		goto done0;
1564 	}
1565 	if (xfer->recv.payload == NULL){
1566 		kprintf("sbp_recv: xfer->recv.payload == NULL\n");
1567 		goto done0;
1568 	}
1569 	rfp = &xfer->recv.hdr;
1570 	if(rfp->mode.wreqb.tcode != FWTCODE_WREQB){
1571 		kprintf("sbp_recv: tcode = %d\n", rfp->mode.wreqb.tcode);
1572 		goto done0;
1573 	}
1574 	sbp_status = (struct sbp_status *)xfer->recv.payload;
1575 	addr = rfp->mode.wreqb.dest_lo;
1576 SBP_DEBUG(2)
1577 	kprintf("received address 0x%x\n", addr);
1578 END_DEBUG
1579 	t = SBP_ADDR2TRG(addr);
1580 	if (t >= SBP_NUM_TARGETS) {
1581 		device_printf(sbp->fd.dev,
1582 			"sbp_recv1: invalid target %d\n", t);
1583 		goto done0;
1584 	}
1585 	target = &sbp->targets[t];
1586 	l = SBP_ADDR2LUN(addr);
1587 	if (l >= target->num_lun || target->luns[l] == NULL) {
1588 		device_printf(sbp->fd.dev,
1589 			"sbp_recv1: invalid lun %d (target=%d)\n", l, t);
1590 		goto done0;
1591 	}
1592 	sdev = target->luns[l];
1593 
1594 	ocb = NULL;
1595 	switch (sbp_status->src) {
1596 	case 0:
1597 	case 1:
1598 		/* check mgm_ocb_cur first */
1599 		ocb  = target->mgm_ocb_cur;
1600 		if (ocb != NULL) {
1601 			if (OCB_MATCH(ocb, sbp_status)) {
1602 				callout_stop(&target->mgm_ocb_timeout);
1603 				target->mgm_ocb_cur = NULL;
1604 				break;
1605 			}
1606 		}
1607 		ocb = sbp_dequeue_ocb(sdev, sbp_status);
1608 		if (ocb == NULL) {
1609 			sbp_show_sdev_info(sdev, 2);
1610 			kprintf("No ocb(%x) on the queue\n",
1611 					ntohl(sbp_status->orb_lo));
1612 		}
1613 		break;
1614 	case 2:
1615 		/* unsolicit */
1616 		sbp_show_sdev_info(sdev, 2);
1617 		kprintf("unsolicit status received\n");
1618 		break;
1619 	default:
1620 		sbp_show_sdev_info(sdev, 2);
1621 		kprintf("unknown sbp_status->src\n");
1622 	}
1623 
1624 	status_valid0 = (sbp_status->src < 2
1625 			&& sbp_status->resp == ORB_RES_CMPL
1626 			&& sbp_status->dead == 0);
1627 	status_valid = (status_valid0 && sbp_status->status == 0);
1628 
1629 	if (!status_valid0 || debug > 2){
1630 		int status;
1631 SBP_DEBUG(0)
1632 		sbp_show_sdev_info(sdev, 2);
1633 		kprintf("ORB status src:%x resp:%x dead:%x"
1634 				" len:%x stat:%x orb:%x%08x\n",
1635 			sbp_status->src, sbp_status->resp, sbp_status->dead,
1636 			sbp_status->len, sbp_status->status,
1637 			ntohs(sbp_status->orb_hi), ntohl(sbp_status->orb_lo));
1638 END_DEBUG
1639 		sbp_show_sdev_info(sdev, 2);
1640 		status = sbp_status->status;
1641 		switch(sbp_status->resp) {
1642 		case 0:
1643 			if (status > MAX_ORB_STATUS0)
1644 				kprintf("%s\n", orb_status0[MAX_ORB_STATUS0]);
1645 			else
1646 				kprintf("%s\n", orb_status0[status]);
1647 			break;
1648 		case 1:
1649 			kprintf("Obj: %s, Error: %s\n",
1650 				orb_status1_object[(status>>6) & 3],
1651 				orb_status1_serial_bus_error[status & 0xf]);
1652 			break;
1653 		case 2:
1654 			kprintf("Illegal request\n");
1655 			break;
1656 		case 3:
1657 			kprintf("Vendor dependent\n");
1658 			break;
1659 		default:
1660 			kprintf("unknown respose code %d\n", sbp_status->resp);
1661 		}
1662 	}
1663 
1664 	/* we have to reset the fetch agent if it's dead */
1665 	if (sbp_status->dead) {
1666 		if (sdev->path) {
1667 			xpt_freeze_devq(sdev->path, 1);
1668 			sdev->freeze ++;
1669 		}
1670 		reset_agent = 1;
1671 	}
1672 
1673 	if (ocb == NULL)
1674 		goto done;
1675 
1676 	switch(ntohl(ocb->orb[4]) & ORB_FMT_MSK){
1677 	case ORB_FMT_NOP:
1678 		break;
1679 	case ORB_FMT_VED:
1680 		break;
1681 	case ORB_FMT_STD:
1682 		switch(ocb->flags) {
1683 		case OCB_ACT_MGM:
1684 			orb_fun = ntohl(ocb->orb[4]) & ORB_FUN_MSK;
1685 			reset_agent = 0;
1686 			switch(orb_fun) {
1687 			case ORB_FUN_LGI:
1688 				fwdma_sync(&sdev->dma, BUS_DMASYNC_POSTREAD);
1689 				login_res = sdev->login;
1690 				login_res->len = ntohs(login_res->len);
1691 				login_res->id = ntohs(login_res->id);
1692 				login_res->cmd_hi = ntohs(login_res->cmd_hi);
1693 				login_res->cmd_lo = ntohl(login_res->cmd_lo);
1694 				if (status_valid) {
1695 SBP_DEBUG(0)
1696 sbp_show_sdev_info(sdev, 2);
1697 kprintf("login: len %d, ID %d, cmd %08x%08x, recon_hold %d\n", login_res->len, login_res->id, login_res->cmd_hi, login_res->cmd_lo, ntohs(login_res->recon_hold));
1698 END_DEBUG
1699 					sbp_busy_timeout(sdev);
1700 				} else {
1701 					/* forgot logout? */
1702 					sbp_show_sdev_info(sdev, 2);
1703 					kprintf("login failed\n");
1704 					sdev->status = SBP_DEV_RESET;
1705 				}
1706 				break;
1707 			case ORB_FUN_RCN:
1708 				login_res = sdev->login;
1709 				if (status_valid) {
1710 SBP_DEBUG(0)
1711 sbp_show_sdev_info(sdev, 2);
1712 kprintf("reconnect: len %d, ID %d, cmd %08x%08x\n", login_res->len, login_res->id, login_res->cmd_hi, login_res->cmd_lo);
1713 END_DEBUG
1714 #if 1
1715 					if (sdev->status == SBP_DEV_ATTACHED)
1716 						sbp_scan_dev(sdev);
1717 					else
1718 						sbp_agent_reset(sdev);
1719 #else
1720 					sdev->status = SBP_DEV_ATTACHED;
1721 					sbp_mgm_orb(sdev, ORB_FUN_ATS, NULL);
1722 #endif
1723 				} else {
1724 					/* reconnection hold time exceed? */
1725 SBP_DEBUG(0)
1726 					sbp_show_sdev_info(sdev, 2);
1727 					kprintf("reconnect failed\n");
1728 END_DEBUG
1729 					sbp_login(sdev);
1730 				}
1731 				break;
1732 			case ORB_FUN_LGO:
1733 				sdev->status = SBP_DEV_RESET;
1734 				break;
1735 			case ORB_FUN_RST:
1736 				sbp_busy_timeout(sdev);
1737 				break;
1738 			case ORB_FUN_LUR:
1739 			case ORB_FUN_ATA:
1740 			case ORB_FUN_ATS:
1741 				sbp_agent_reset(sdev);
1742 				break;
1743 			default:
1744 				sbp_show_sdev_info(sdev, 2);
1745 				kprintf("unknown function %d\n", orb_fun);
1746 				break;
1747 			}
1748 			sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
1749 			break;
1750 		case OCB_ACT_CMD:
1751 			sdev->timeout = 0;
1752 			if(ocb->ccb != NULL){
1753 				union ccb *ccb;
1754 /*
1755 				u_int32_t *ld;
1756 				ld = ocb->ccb->csio.data_ptr;
1757 				if(ld != NULL && ocb->ccb->csio.dxfer_len != 0)
1758 					kprintf("ptr %08x %08x %08x %08x\n", ld[0], ld[1], ld[2], ld[3]);
1759 				else
1760 					kprintf("ptr NULL\n");
1761 kprintf("len %d\n", sbp_status->len);
1762 */
1763 				ccb = ocb->ccb;
1764 				if(sbp_status->len > 1){
1765 					sbp_scsi_status(sbp_status, ocb);
1766 				}else{
1767 					if(sbp_status->resp != ORB_RES_CMPL){
1768 						ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1769 					}else{
1770 						ccb->ccb_h.status = CAM_REQ_CMP;
1771 					}
1772 				}
1773 				/* fix up inq data */
1774 				if (ccb->csio.cdb_io.cdb_bytes[0] == INQUIRY)
1775 					sbp_fix_inq_data(ocb);
1776 				xpt_done(ccb);
1777 			}
1778 			break;
1779 		default:
1780 			break;
1781 		}
1782 	}
1783 
1784 	sbp_free_ocb(sdev, ocb);
1785 done:
1786 	if (reset_agent)
1787 		sbp_agent_reset(sdev);
1788 
1789 done0:
1790 	xfer->recv.pay_len = SBP_RECV_LEN;
1791 /* The received packet is usually small enough to be stored within
1792  * the buffer. In that case, the controller return ack_complete and
1793  * no respose is necessary.
1794  *
1795  * XXX fwohci.c and firewire.c should inform event_code such as
1796  * ack_complete or ack_pending to upper driver.
1797  */
1798 #if NEED_RESPONSE
1799 	xfer->send.off = 0;
1800 	sfp = (struct fw_pkt *)xfer->send.buf;
1801 	sfp->mode.wres.dst = rfp->mode.wreqb.src;
1802 	xfer->dst = sfp->mode.wres.dst;
1803 	xfer->spd = min(sdev->target->fwdev->speed, max_speed);
1804 	xfer->act.hand = sbp_loginres_callback;
1805 	xfer->retry_req = fw_asybusy;
1806 
1807 	sfp->mode.wres.tlrt = rfp->mode.wreqb.tlrt;
1808 	sfp->mode.wres.tcode = FWTCODE_WRES;
1809 	sfp->mode.wres.rtcode = 0;
1810 	sfp->mode.wres.pri = 0;
1811 
1812 	fw_asyreq(xfer->fc, -1, xfer);
1813 #else
1814 	/* recycle */
1815 	STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
1816 #endif
1817 
1818 	return;
1819 
1820 }
1821 
1822 static void
1823 sbp_recv(struct fw_xfer *xfer)
1824 {
1825 	crit_enter();
1826 	sbp_recv1(xfer);
1827 	crit_exit();
1828 }
1829 /*
1830  * sbp_attach()
1831  */
1832 static int
1833 sbp_attach(device_t dev)
1834 {
1835 	struct sbp_softc *sbp;
1836 	struct cam_devq *devq;
1837 	struct fw_xfer *xfer;
1838 	int i, error;
1839 
1840 SBP_DEBUG(0)
1841 	kprintf("sbp_attach (cold=%d)\n", cold);
1842 END_DEBUG
1843 
1844 #if 0
1845 	if (cold)
1846 		sbp_cold ++;
1847 #endif
1848 	sbp = ((struct sbp_softc *)device_get_softc(dev));
1849 	bzero(sbp, sizeof(struct sbp_softc));
1850 	sbp->fd.dev = dev;
1851 	sbp->fd.fc = device_get_ivars(dev);
1852 
1853 	if (max_speed < 0)
1854 		max_speed = sbp->fd.fc->speed;
1855 
1856 	error = bus_dma_tag_create(/*parent*/sbp->fd.fc->dmat,
1857 				/* XXX shoud be 4 for sane backend? */
1858 				/*alignment*/1,
1859 				/*boundary*/0,
1860 				/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
1861 				/*highaddr*/BUS_SPACE_MAXADDR,
1862 				/*filter*/NULL, /*filterarg*/NULL,
1863 				/*maxsize*/0x100000, /*nsegments*/SBP_IND_MAX,
1864 				/*maxsegsz*/SBP_SEG_MAX,
1865 				/*flags*/BUS_DMA_ALLOCNOW,
1866 #if defined(__FreeBSD__) && __FreeBSD_version >= 501102
1867 				/*lockfunc*/busdma_lock_mutex,
1868 				/*lockarg*/&Giant,
1869 #endif
1870 				&sbp->dmat);
1871 	if (error != 0) {
1872 		kprintf("sbp_attach: Could not allocate DMA tag "
1873 			"- error %d\n", error);
1874 			return (ENOMEM);
1875 	}
1876 
1877 	devq = cam_simq_alloc(/*maxopenings*/SBP_NUM_OCB);
1878 	if (devq == NULL)
1879 		return (ENXIO);
1880 
1881 	for( i = 0 ; i < SBP_NUM_TARGETS ; i++){
1882 		sbp->targets[i].fwdev = NULL;
1883 		sbp->targets[i].luns = NULL;
1884 	}
1885 
1886 	sbp->sim = cam_sim_alloc(sbp_action, sbp_poll, "sbp", sbp,
1887 				 device_get_unit(dev),
1888 				 /*untagged*/ 1,
1889 				 /*tagged*/ SBP_QUEUE_LEN - 1,
1890 				 devq);
1891 	cam_simq_release(devq);
1892 	if (sbp->sim == NULL)
1893 		return (ENXIO);
1894 
1895 	if (xpt_bus_register(sbp->sim, /*bus*/0) != CAM_SUCCESS)
1896 		goto fail;
1897 
1898 	if (xpt_create_path(&sbp->path, xpt_periph, cam_sim_path(sbp->sim),
1899 	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1900 		xpt_bus_deregister(cam_sim_path(sbp->sim));
1901 		goto fail;
1902 	}
1903 
1904 	/* We reserve 16 bit space (4 bytes X 64 targets X 256 luns) */
1905 	sbp->fwb.start = ((u_int64_t)SBP_BIND_HI << 32) | SBP_DEV2ADDR(0, 0);
1906 	sbp->fwb.end = sbp->fwb.start + 0xffff;
1907 	sbp->fwb.act_type = FWACT_XFER;
1908 	/* pre-allocate xfer */
1909 	STAILQ_INIT(&sbp->fwb.xferlist);
1910 	for (i = 0; i < SBP_NUM_OCB/2; i ++) {
1911 		xfer = fw_xfer_alloc_buf(M_SBP,
1912 			/* send */0,
1913 			/* recv */SBP_RECV_LEN);
1914 		xfer->act.hand = sbp_recv;
1915 #if NEED_RESPONSE
1916 		xfer->fc = sbp->fd.fc;
1917 #endif
1918 		xfer->sc = (caddr_t)sbp;
1919 		STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
1920 	}
1921 	fw_bindadd(sbp->fd.fc, &sbp->fwb);
1922 
1923 	sbp->fd.post_busreset = sbp_post_busreset;
1924 	sbp->fd.post_explore = sbp_post_explore;
1925 
1926 	if (sbp->fd.fc->status != -1) {
1927 		crit_enter();
1928 		sbp_post_busreset((void *)sbp);
1929 		sbp_post_explore((void *)sbp);
1930 		crit_exit();
1931 	}
1932 	xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
1933 
1934 	return (0);
1935 fail:
1936 	cam_sim_free(sbp->sim);
1937 	return (ENXIO);
1938 }
1939 
1940 static int
1941 sbp_logout_all(struct sbp_softc *sbp)
1942 {
1943 	struct sbp_target *target;
1944 	struct sbp_dev *sdev;
1945 	int i, j;
1946 
1947 SBP_DEBUG(0)
1948 	kprintf("sbp_logout_all\n");
1949 END_DEBUG
1950 	for (i = 0 ; i < SBP_NUM_TARGETS ; i ++) {
1951 		target = &sbp->targets[i];
1952 		if (target->luns == NULL)
1953 			continue;
1954 		for (j = 0; j < target->num_lun; j++) {
1955 			sdev = target->luns[j];
1956 			if (sdev == NULL)
1957 				continue;
1958 			callout_stop(&sdev->login_callout);
1959 			if (sdev->status >= SBP_DEV_TOATTACH &&
1960 					sdev->status <= SBP_DEV_ATTACHED)
1961 				sbp_mgm_orb(sdev, ORB_FUN_LGO, NULL);
1962 		}
1963 	}
1964 
1965 	return 0;
1966 }
1967 
1968 static int
1969 sbp_shutdown(device_t dev)
1970 {
1971 	struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
1972 
1973 	sbp_logout_all(sbp);
1974 	return (0);
1975 }
1976 
1977 static void
1978 sbp_free_sdev(struct sbp_dev *sdev)
1979 {
1980 	int i;
1981 
1982 	if (sdev == NULL)
1983 		return;
1984 	for (i = 0; i < SBP_QUEUE_LEN; i++)
1985 		bus_dmamap_destroy(sdev->target->sbp->dmat,
1986 		    sdev->ocb[i].dmamap);
1987 	fwdma_free(sdev->target->sbp->fd.fc, &sdev->dma);
1988 	kfree(sdev, M_SBP);
1989 }
1990 
1991 static void
1992 sbp_free_target(struct sbp_target *target)
1993 {
1994 	struct sbp_softc *sbp;
1995 	struct fw_xfer *xfer, *next;
1996 	int i;
1997 
1998 	if (target->luns == NULL)
1999 		return;
2000 	callout_stop(&target->mgm_ocb_timeout);
2001 	sbp = target->sbp;
2002 	for (i = 0; i < target->num_lun; i++)
2003 		sbp_free_sdev(target->luns[i]);
2004 
2005 	for (xfer = STAILQ_FIRST(&target->xferlist);
2006 			xfer != NULL; xfer = next) {
2007 		next = STAILQ_NEXT(xfer, link);
2008 		fw_xfer_free_buf(xfer);
2009 	}
2010 	STAILQ_INIT(&target->xferlist);
2011 	kfree(target->luns, M_SBP);
2012 	target->num_lun = 0;
2013 	target->luns = NULL;
2014 	target->fwdev = NULL;
2015 }
2016 
2017 static int
2018 sbp_detach(device_t dev)
2019 {
2020 	struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
2021 	struct firewire_comm *fc = sbp->fd.fc;
2022 	struct fw_xfer *xfer, *next;
2023 	int i;
2024 
2025 SBP_DEBUG(0)
2026 	kprintf("sbp_detach\n");
2027 END_DEBUG
2028 
2029 	for (i = 0; i < SBP_NUM_TARGETS; i ++)
2030 		sbp_cam_detach_target(&sbp->targets[i]);
2031 	xpt_async(AC_LOST_DEVICE, sbp->path, NULL);
2032 	xpt_free_path(sbp->path);
2033 	xpt_bus_deregister(cam_sim_path(sbp->sim));
2034 	cam_sim_free(sbp->sim);
2035 
2036 	sbp_logout_all(sbp);
2037 
2038 	/* XXX wait for logout completion */
2039 	tsleep(&i, FWPRI, "sbpdtc", hz/2);
2040 
2041 	for (i = 0 ; i < SBP_NUM_TARGETS ; i ++)
2042 		sbp_free_target(&sbp->targets[i]);
2043 
2044 	for (xfer = STAILQ_FIRST(&sbp->fwb.xferlist);
2045 				xfer != NULL; xfer = next) {
2046 		next = STAILQ_NEXT(xfer, link);
2047 		fw_xfer_free_buf(xfer);
2048 	}
2049 	STAILQ_INIT(&sbp->fwb.xferlist);
2050 	fw_bindremove(fc, &sbp->fwb);
2051 
2052 	bus_dma_tag_destroy(sbp->dmat);
2053 
2054 	return (0);
2055 }
2056 
2057 static void
2058 sbp_cam_detach_sdev(struct sbp_dev *sdev)
2059 {
2060 	if (sdev == NULL)
2061 		return;
2062 	if (sdev->status == SBP_DEV_DEAD)
2063 		return;
2064 	if (sdev->status == SBP_DEV_RESET)
2065 		return;
2066 	if (sdev->path) {
2067 		xpt_release_devq(sdev->path,
2068 				 sdev->freeze, TRUE);
2069 		sdev->freeze = 0;
2070 		xpt_async(AC_LOST_DEVICE, sdev->path, NULL);
2071 		xpt_free_path(sdev->path);
2072 		sdev->path = NULL;
2073 	}
2074 	sbp_abort_all_ocbs(sdev, CAM_DEV_NOT_THERE);
2075 }
2076 
2077 static void
2078 sbp_cam_detach_target(struct sbp_target *target)
2079 {
2080 	int i;
2081 
2082 	if (target->luns != NULL) {
2083 SBP_DEBUG(0)
2084 		kprintf("sbp_detach_target %d\n", target->target_id);
2085 END_DEBUG
2086 		callout_stop(&target->scan_callout);
2087 		for (i = 0; i < target->num_lun; i++)
2088 			sbp_cam_detach_sdev(target->luns[i]);
2089 	}
2090 }
2091 
2092 static void
2093 sbp_target_reset(struct sbp_dev *sdev, int method)
2094 {
2095 	int i;
2096 	struct sbp_target *target = sdev->target;
2097 	struct sbp_dev *tsdev;
2098 
2099 	for (i = 0; i < target->num_lun; i++) {
2100 		tsdev = target->luns[i];
2101 		if (tsdev == NULL)
2102 			continue;
2103 		if (tsdev->status == SBP_DEV_DEAD)
2104 			continue;
2105 		if (tsdev->status == SBP_DEV_RESET)
2106 			continue;
2107 		xpt_freeze_devq(tsdev->path, 1);
2108 		tsdev->freeze ++;
2109 		sbp_abort_all_ocbs(tsdev, CAM_CMD_TIMEOUT);
2110 		if (method == 2)
2111 			tsdev->status = SBP_DEV_LOGIN;
2112 	}
2113 	switch(method) {
2114 	case 1:
2115 		kprintf("target reset\n");
2116 		sbp_mgm_orb(sdev, ORB_FUN_RST, NULL);
2117 		break;
2118 	case 2:
2119 		kprintf("reset start\n");
2120 		sbp_reset_start(sdev);
2121 		break;
2122 	}
2123 
2124 }
2125 
2126 static void
2127 sbp_mgm_timeout(void *arg)
2128 {
2129 	struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2130 	struct sbp_dev *sdev = ocb->sdev;
2131 	struct sbp_target *target = sdev->target;
2132 
2133 	sbp_show_sdev_info(sdev, 2);
2134 	kprintf("request timeout(mgm orb:0x%08x) ... ",
2135 	    (u_int32_t)ocb->bus_addr);
2136 	target->mgm_ocb_cur = NULL;
2137 	sbp_free_ocb(sdev, ocb);
2138 #if 0
2139 	/* XXX */
2140 	kprintf("run next request\n");
2141 	sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
2142 #endif
2143 #if 1
2144 	kprintf("reset start\n");
2145 	sbp_reset_start(sdev);
2146 #endif
2147 }
2148 
2149 static void
2150 sbp_timeout(void *arg)
2151 {
2152 	struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2153 	struct sbp_dev *sdev = ocb->sdev;
2154 
2155 	sbp_show_sdev_info(sdev, 2);
2156 	kprintf("request timeout(cmd orb:0x%08x) ... ",
2157 	    (u_int32_t)ocb->bus_addr);
2158 
2159 	sdev->timeout ++;
2160 	switch(sdev->timeout) {
2161 	case 1:
2162 		kprintf("agent reset\n");
2163 		xpt_freeze_devq(sdev->path, 1);
2164 		sdev->freeze ++;
2165 		sbp_abort_all_ocbs(sdev, CAM_CMD_TIMEOUT);
2166 		sbp_agent_reset(sdev);
2167 		break;
2168 	case 2:
2169 	case 3:
2170 		sbp_target_reset(sdev, sdev->timeout - 1);
2171 		break;
2172 #if 0
2173 	default:
2174 		/* XXX give up */
2175 		sbp_cam_detach_target(target);
2176 		if (target->luns != NULL)
2177 			kfree(target->luns, M_SBP);
2178 		target->num_lun = 0;
2179 		target->luns = NULL;
2180 		target->fwdev = NULL;
2181 #endif
2182 	}
2183 }
2184 
2185 static void
2186 sbp_action1(struct cam_sim *sim, union ccb *ccb)
2187 {
2188 
2189 	struct sbp_softc *sbp = (struct sbp_softc *)sim->softc;
2190 	struct sbp_target *target = NULL;
2191 	struct sbp_dev *sdev = NULL;
2192 
2193 	/* target:lun -> sdev mapping */
2194 	if (sbp != NULL
2195 			&& ccb->ccb_h.target_id != CAM_TARGET_WILDCARD
2196 			&& ccb->ccb_h.target_id < SBP_NUM_TARGETS) {
2197 		target = &sbp->targets[ccb->ccb_h.target_id];
2198 		if (target->fwdev != NULL
2199 				&& ccb->ccb_h.target_lun != CAM_LUN_WILDCARD
2200 				&& ccb->ccb_h.target_lun < target->num_lun) {
2201 			sdev = target->luns[ccb->ccb_h.target_lun];
2202 			if (sdev != NULL && sdev->status != SBP_DEV_ATTACHED &&
2203 				sdev->status != SBP_DEV_PROBE)
2204 				sdev = NULL;
2205 		}
2206 	}
2207 
2208 SBP_DEBUG(1)
2209 	if (sdev == NULL)
2210 		kprintf("invalid target %d lun %d\n",
2211 			ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2212 END_DEBUG
2213 
2214 	switch (ccb->ccb_h.func_code) {
2215 	case XPT_SCSI_IO:
2216 	case XPT_RESET_DEV:
2217 	case XPT_GET_TRAN_SETTINGS:
2218 	case XPT_SET_TRAN_SETTINGS:
2219 	case XPT_CALC_GEOMETRY:
2220 		if (sdev == NULL) {
2221 SBP_DEBUG(1)
2222 			kprintf("%s:%d:%d:func_code 0x%04x: "
2223 				"Invalid target (target needed)\n",
2224 				device_get_nameunit(sbp->fd.dev),
2225 				ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2226 				ccb->ccb_h.func_code);
2227 END_DEBUG
2228 
2229 			ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2230 			xpt_done(ccb);
2231 			return;
2232 		}
2233 		break;
2234 	case XPT_PATH_INQ:
2235 	case XPT_NOOP:
2236 		/* The opcodes sometimes aimed at a target (sc is valid),
2237 		 * sometimes aimed at the SIM (sc is invalid and target is
2238 		 * CAM_TARGET_WILDCARD)
2239 		 */
2240 		if (sbp == NULL &&
2241 			ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
2242 SBP_DEBUG(0)
2243 			kprintf("%s:%d:%d func_code 0x%04x: "
2244 				"Invalid target (no wildcard)\n",
2245 				device_get_nameunit(sbp->fd.dev),
2246 				ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2247 				ccb->ccb_h.func_code);
2248 END_DEBUG
2249 			ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2250 			xpt_done(ccb);
2251 			return;
2252 		}
2253 		break;
2254 	default:
2255 		/* XXX Hm, we should check the input parameters */
2256 		break;
2257 	}
2258 
2259 	switch (ccb->ccb_h.func_code) {
2260 	case XPT_SCSI_IO:
2261 	{
2262 		struct ccb_scsiio *csio;
2263 		struct sbp_ocb *ocb;
2264 		int speed;
2265 		void *cdb;
2266 
2267 		csio = &ccb->csio;
2268 
2269 SBP_DEBUG(2)
2270 		kprintf("%s:%d:%d XPT_SCSI_IO: "
2271 			"cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
2272 			", flags: 0x%02x, "
2273 			"%db cmd/%db data/%db sense\n",
2274 			device_get_nameunit(sbp->fd.dev),
2275 			ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2276 			csio->cdb_io.cdb_bytes[0],
2277 			csio->cdb_io.cdb_bytes[1],
2278 			csio->cdb_io.cdb_bytes[2],
2279 			csio->cdb_io.cdb_bytes[3],
2280 			csio->cdb_io.cdb_bytes[4],
2281 			csio->cdb_io.cdb_bytes[5],
2282 			csio->cdb_io.cdb_bytes[6],
2283 			csio->cdb_io.cdb_bytes[7],
2284 			csio->cdb_io.cdb_bytes[8],
2285 			csio->cdb_io.cdb_bytes[9],
2286 			ccb->ccb_h.flags & CAM_DIR_MASK,
2287 			csio->cdb_len, csio->dxfer_len,
2288 			csio->sense_len);
2289 END_DEBUG
2290 		if(sdev == NULL){
2291 			ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2292 			xpt_done(ccb);
2293 			return;
2294 		}
2295 #if 0
2296 		/* if we are in probe stage, pass only probe commands */
2297 		if (sdev->status == SBP_DEV_PROBE) {
2298 			char *name;
2299 			name = xpt_path_periph(ccb->ccb_h.path)->periph_name;
2300 			kprintf("probe stage, periph name: %s\n", name);
2301 			if (strcmp(name, "probe") != 0) {
2302 				ccb->ccb_h.status = CAM_REQUEUE_REQ;
2303 				xpt_done(ccb);
2304 				return;
2305 			}
2306 		}
2307 #endif
2308 		if ((ocb = sbp_get_ocb(sdev)) == NULL) {
2309 			ccb->ccb_h.status = CAM_REQUEUE_REQ;
2310 			xpt_done(ccb);
2311 			return;
2312 		}
2313 
2314 		ocb->flags = OCB_ACT_CMD;
2315 		ocb->sdev = sdev;
2316 		ocb->ccb = ccb;
2317 		ccb->ccb_h.ccb_sdev_ptr = sdev;
2318 		ocb->orb[0] = htonl(1 << 31);
2319 		ocb->orb[1] = 0;
2320 		ocb->orb[2] = htonl(((sbp->fd.fc->nodeid | FWLOCALBUS )<< 16) );
2321 		ocb->orb[3] = htonl(ocb->bus_addr + IND_PTR_OFFSET);
2322 		speed = min(target->fwdev->speed, max_speed);
2323 		ocb->orb[4] = htonl(ORB_NOTIFY | ORB_CMD_SPD(speed)
2324 						| ORB_CMD_MAXP(speed + 7));
2325 		if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN){
2326 			ocb->orb[4] |= htonl(ORB_CMD_IN);
2327 		}
2328 
2329 		if (csio->ccb_h.flags & CAM_SCATTER_VALID)
2330 			kprintf("sbp: CAM_SCATTER_VALID\n");
2331 		if (csio->ccb_h.flags & CAM_DATA_PHYS)
2332 			kprintf("sbp: CAM_DATA_PHYS\n");
2333 
2334 		if (csio->ccb_h.flags & CAM_CDB_POINTER)
2335 			cdb = (void *)csio->cdb_io.cdb_ptr;
2336 		else
2337 			cdb = (void *)&csio->cdb_io.cdb_bytes;
2338 		bcopy(cdb, (void *)&ocb->orb[5], csio->cdb_len);
2339 /*
2340 kprintf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[0]), ntohl(ocb->orb[1]), ntohl(ocb->orb[2]), ntohl(ocb->orb[3]));
2341 kprintf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[4]), ntohl(ocb->orb[5]), ntohl(ocb->orb[6]), ntohl(ocb->orb[7]));
2342 */
2343 		if (ccb->csio.dxfer_len > 0) {
2344 			int error;
2345 
2346 			crit_enter();
2347 			error = bus_dmamap_load(/*dma tag*/sbp->dmat,
2348 					/*dma map*/ocb->dmamap,
2349 					ccb->csio.data_ptr,
2350 					ccb->csio.dxfer_len,
2351 					sbp_execute_ocb,
2352 					ocb,
2353 					/*flags*/0);
2354 			crit_exit();
2355 			if (error)
2356 				kprintf("sbp: bus_dmamap_load error %d\n", error);
2357 		} else
2358 			sbp_execute_ocb(ocb, NULL, 0, 0);
2359 		break;
2360 	}
2361 	case XPT_CALC_GEOMETRY:
2362 	{
2363 		struct ccb_calc_geometry *ccg;
2364 #if defined(__DragonFly__) || __FreeBSD_version < 501100
2365 		u_int32_t size_mb;
2366 		u_int32_t secs_per_cylinder;
2367 		int extended = 1;
2368 #endif
2369 
2370 		ccg = &ccb->ccg;
2371 		if (ccg->block_size == 0) {
2372 			kprintf("sbp_action1: block_size is 0.\n");
2373 			ccb->ccb_h.status = CAM_REQ_INVALID;
2374 			xpt_done(ccb);
2375 			break;
2376 		}
2377 SBP_DEBUG(1)
2378 		kprintf("%s:%d:%d:%d:XPT_CALC_GEOMETRY: Volume size = %ju\n",
2379 			device_get_nameunit(sbp->fd.dev),
2380 			cam_sim_path(sbp->sim),
2381 			ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2382 			(uintmax_t)ccg->volume_size);
2383 END_DEBUG
2384 
2385 #if defined(__DragonFly__) || __FreeBSD_version < 501100
2386 		size_mb = ccg->volume_size
2387 			/ ((1024L * 1024L) / ccg->block_size);
2388 
2389 		if (size_mb > 1024 && extended) {
2390 			ccg->heads = 255;
2391 			ccg->secs_per_track = 63;
2392 		} else {
2393 			ccg->heads = 64;
2394 			ccg->secs_per_track = 32;
2395 		}
2396 		secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2397 		ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2398 		ccb->ccb_h.status = CAM_REQ_CMP;
2399 #else
2400 		cam_calc_geometry(ccg, /*extended*/1);
2401 #endif
2402 		xpt_done(ccb);
2403 		break;
2404 	}
2405 	case XPT_RESET_BUS:		/* Reset the specified SCSI bus */
2406 	{
2407 
2408 SBP_DEBUG(1)
2409 		kprintf("%s:%d:XPT_RESET_BUS: \n",
2410 			device_get_nameunit(sbp->fd.dev), cam_sim_path(sbp->sim));
2411 END_DEBUG
2412 
2413 		ccb->ccb_h.status = CAM_REQ_INVALID;
2414 		xpt_done(ccb);
2415 		break;
2416 	}
2417 	case XPT_PATH_INQ:		/* Path routing inquiry */
2418 	{
2419 		struct ccb_pathinq *cpi = &ccb->cpi;
2420 
2421 SBP_DEBUG(1)
2422 		kprintf("%s:%d:%d XPT_PATH_INQ:.\n",
2423 			device_get_nameunit(sbp->fd.dev),
2424 			ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2425 END_DEBUG
2426 		cpi->version_num = 1; /* XXX??? */
2427 		cpi->hba_inquiry = PI_TAG_ABLE;
2428 		cpi->target_sprt = 0;
2429 		cpi->hba_misc = PIM_NOBUSRESET | PIM_NO_6_BYTE;
2430 		cpi->hba_eng_cnt = 0;
2431 		cpi->max_target = SBP_NUM_TARGETS - 1;
2432 		cpi->max_lun = SBP_NUM_LUNS - 1;
2433 		cpi->initiator_id = SBP_INITIATOR;
2434 		cpi->bus_id = sim->bus_id;
2435 		cpi->base_transfer_speed = 400 * 1000 / 8;
2436 		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2437 		strncpy(cpi->hba_vid, "SBP", HBA_IDLEN);
2438 		strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
2439 		cpi->unit_number = sim->unit_number;
2440 
2441 		cpi->ccb_h.status = CAM_REQ_CMP;
2442 		xpt_done(ccb);
2443 		break;
2444 	}
2445 	case XPT_GET_TRAN_SETTINGS:
2446 	{
2447 		struct ccb_trans_settings *cts = &ccb->cts;
2448 SBP_DEBUG(1)
2449 		kprintf("%s:%d:%d XPT_GET_TRAN_SETTINGS:.\n",
2450 			device_get_nameunit(sbp->fd.dev),
2451 			ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2452 END_DEBUG
2453 		/* Enable disconnect and tagged queuing */
2454 		cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
2455 		cts->flags = CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB;
2456 
2457 		cts->ccb_h.status = CAM_REQ_CMP;
2458 		xpt_done(ccb);
2459 		break;
2460 	}
2461 	case XPT_ABORT:
2462 		ccb->ccb_h.status = CAM_UA_ABORT;
2463 		xpt_done(ccb);
2464 		break;
2465 	case XPT_SET_TRAN_SETTINGS:
2466 		/* XXX */
2467 	default:
2468 		ccb->ccb_h.status = CAM_REQ_INVALID;
2469 		xpt_done(ccb);
2470 		break;
2471 	}
2472 	return;
2473 }
2474 
2475 static void
2476 sbp_action(struct cam_sim *sim, union ccb *ccb)
2477 {
2478 	crit_enter();
2479 	sbp_action1(sim, ccb);
2480 	crit_exit();
2481 }
2482 
2483 static void
2484 sbp_execute_ocb(void *arg,  bus_dma_segment_t *segments, int seg, int error)
2485 {
2486 	int i;
2487 	struct sbp_ocb *ocb;
2488 	struct sbp_ocb *prev;
2489 	bus_dma_segment_t *s;
2490 
2491 	if (error)
2492 		kprintf("sbp_execute_ocb: error=%d\n", error);
2493 
2494 	ocb = (struct sbp_ocb *)arg;
2495 
2496 SBP_DEBUG(2)
2497 	kprintf("sbp_execute_ocb: seg %d", seg);
2498 	for (i = 0; i < seg; i++)
2499 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2500 		kprintf(", %x:%d", segments[i].ds_addr, segments[i].ds_len);
2501 #else
2502 		kprintf(", %jx:%jd", (uintmax_t)segments[i].ds_addr,
2503 					(uintmax_t)segments[i].ds_len);
2504 #endif
2505 	kprintf("\n");
2506 END_DEBUG
2507 
2508 	if (seg == 1) {
2509 		/* direct pointer */
2510 		s = &segments[0];
2511 		if (s->ds_len > SBP_SEG_MAX)
2512 			panic("ds_len > SBP_SEG_MAX, fix busdma code");
2513 		ocb->orb[3] = htonl(s->ds_addr);
2514 		ocb->orb[4] |= htonl(s->ds_len);
2515 	} else if(seg > 1) {
2516 		/* page table */
2517 		for (i = 0; i < seg; i++) {
2518 			s = &segments[i];
2519 SBP_DEBUG(0)
2520 			/* XXX LSI Logic "< 16 byte" bug might be hit */
2521 			if (s->ds_len < 16)
2522 				kprintf("sbp_execute_ocb: warning, "
2523 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2524 					"segment length(%d) is less than 16."
2525 #else
2526 					"segment length(%zd) is less than 16."
2527 #endif
2528 					"(seg=%d/%d)\n", s->ds_len, i+1, seg);
2529 END_DEBUG
2530 			if (s->ds_len > SBP_SEG_MAX)
2531 				panic("ds_len > SBP_SEG_MAX, fix busdma code");
2532 			ocb->ind_ptr[i].hi = htonl(s->ds_len << 16);
2533 			ocb->ind_ptr[i].lo = htonl(s->ds_addr);
2534 		}
2535 		ocb->orb[4] |= htonl(ORB_CMD_PTBL | seg);
2536 	}
2537 
2538 	if (seg > 0)
2539 		bus_dmamap_sync(ocb->sdev->target->sbp->dmat, ocb->dmamap,
2540 			(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2541 			BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
2542 	prev = sbp_enqueue_ocb(ocb->sdev, ocb);
2543 	fwdma_sync(&ocb->sdev->dma, BUS_DMASYNC_PREWRITE);
2544 	if (prev == NULL || (ocb->sdev->flags & ORB_LINK_DEAD) != 0) {
2545 		ocb->sdev->flags &= ~ORB_LINK_DEAD;
2546 		sbp_orb_pointer(ocb->sdev, ocb);
2547 	}
2548 }
2549 
2550 static void
2551 sbp_poll(struct cam_sim *sim)
2552 {
2553 	struct sbp_softc *sbp;
2554 	struct firewire_comm *fc;
2555 
2556 	sbp = (struct sbp_softc *)sim->softc;
2557 	fc = sbp->fd.fc;
2558 
2559 	fc->poll(fc, 0, -1);
2560 
2561 	return;
2562 }
2563 
2564 static struct sbp_ocb *
2565 sbp_dequeue_ocb(struct sbp_dev *sdev, struct sbp_status *sbp_status)
2566 {
2567 	struct sbp_ocb *ocb;
2568 	struct sbp_ocb *next;
2569 	int order = 0;
2570 	int flags;
2571 
2572 	crit_enter();
2573 
2574 SBP_DEBUG(1)
2575 	sbp_show_sdev_info(sdev, 2);
2576 	kprintf("%s: 0x%08x src %d\n",
2577 	    __func__, ntohl(sbp_status->orb_lo), sbp_status->src);
2578 END_DEBUG
2579 	for (ocb = STAILQ_FIRST(&sdev->ocbs); ocb != NULL; ocb = next) {
2580 		next = STAILQ_NEXT(ocb, ocb);
2581 		flags = ocb->flags;
2582 		if (OCB_MATCH(ocb, sbp_status)) {
2583 			/* found */
2584 			STAILQ_REMOVE(&sdev->ocbs, ocb, sbp_ocb, ocb);
2585 			if (ocb->ccb != NULL)
2586 				callout_stop(&ocb->ccb->ccb_h.timeout_ch);
2587 			if (ntohl(ocb->orb[4]) & 0xffff) {
2588 				bus_dmamap_sync(sdev->target->sbp->dmat,
2589 					ocb->dmamap,
2590 					(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2591 					BUS_DMASYNC_POSTREAD :
2592 					BUS_DMASYNC_POSTWRITE);
2593 				bus_dmamap_unload(sdev->target->sbp->dmat,
2594 					ocb->dmamap);
2595 			}
2596 			if (sbp_status->src == SRC_NO_NEXT) {
2597 				if (next != NULL)
2598 					sbp_orb_pointer(sdev, next);
2599 				else if (order > 0) {
2600 					/*
2601 					 * Unordered execution
2602 					 * We need to send pointer for
2603 					 * next ORB
2604 					 */
2605 					sdev->flags |= ORB_LINK_DEAD;
2606 				}
2607 			}
2608 			break;
2609 		} else
2610 			order ++;
2611 	}
2612 	crit_exit();
2613 SBP_DEBUG(0)
2614 	if (ocb && order > 0) {
2615 		sbp_show_sdev_info(sdev, 2);
2616 		kprintf("unordered execution order:%d\n", order);
2617 	}
2618 END_DEBUG
2619 	return (ocb);
2620 }
2621 
2622 static struct sbp_ocb *
2623 sbp_enqueue_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2624 {
2625 	struct sbp_ocb *prev;
2626 
2627 	crit_enter();
2628 
2629 SBP_DEBUG(1)
2630 	sbp_show_sdev_info(sdev, 2);
2631 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2632 	kprintf("%s: 0x%08x\n", __func__, ocb->bus_addr);
2633 #else
2634 	kprintf("%s: 0x%08jx\n", __func__, (uintmax_t)ocb->bus_addr);
2635 #endif
2636 END_DEBUG
2637 	prev = STAILQ_LAST(&sdev->ocbs, sbp_ocb, ocb);
2638 	STAILQ_INSERT_TAIL(&sdev->ocbs, ocb, ocb);
2639 
2640 	if (ocb->ccb != NULL)
2641 		callout_reset(&ocb->ccb->ccb_h.timeout_ch,
2642 		    (ocb->ccb->ccb_h.timeout * hz) / 1000, sbp_timeout, ocb);
2643 
2644 	if (prev != NULL) {
2645 SBP_DEBUG(2)
2646 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2647 		kprintf("linking chain 0x%x -> 0x%x\n",
2648 		    prev->bus_addr, ocb->bus_addr);
2649 #else
2650 		kprintf("linking chain 0x%jx -> 0x%jx\n",
2651 		    (uintmax_t)prev->bus_addr, (uintmax_t)ocb->bus_addr);
2652 #endif
2653 END_DEBUG
2654 		prev->orb[1] = htonl(ocb->bus_addr);
2655 		prev->orb[0] = 0;
2656 	}
2657 	crit_exit();
2658 
2659 	return prev;
2660 }
2661 
2662 static struct sbp_ocb *
2663 sbp_get_ocb(struct sbp_dev *sdev)
2664 {
2665 	struct sbp_ocb *ocb;
2666 
2667 	crit_enter();
2668 	ocb = STAILQ_FIRST(&sdev->free_ocbs);
2669 	if (ocb == NULL) {
2670 		kprintf("ocb shortage!!!\n");
2671 		return NULL;
2672 	}
2673 	STAILQ_REMOVE_HEAD(&sdev->free_ocbs, ocb);
2674 	crit_exit();
2675 	ocb->ccb = NULL;
2676 	return (ocb);
2677 }
2678 
2679 static void
2680 sbp_free_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2681 {
2682 	ocb->flags = 0;
2683 	ocb->ccb = NULL;
2684 	STAILQ_INSERT_TAIL(&sdev->free_ocbs, ocb, ocb);
2685 }
2686 
2687 static void
2688 sbp_abort_ocb(struct sbp_ocb *ocb, int status)
2689 {
2690 	struct sbp_dev *sdev;
2691 
2692 	sdev = ocb->sdev;
2693 SBP_DEBUG(0)
2694 	sbp_show_sdev_info(sdev, 2);
2695 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2696 	kprintf("sbp_abort_ocb 0x%x\n", ocb->bus_addr);
2697 #else
2698 	kprintf("sbp_abort_ocb 0x%jx\n", (uintmax_t)ocb->bus_addr);
2699 #endif
2700 END_DEBUG
2701 SBP_DEBUG(1)
2702 	if (ocb->ccb != NULL)
2703 		sbp_print_scsi_cmd(ocb);
2704 END_DEBUG
2705 	if (ntohl(ocb->orb[4]) & 0xffff) {
2706 		bus_dmamap_sync(sdev->target->sbp->dmat, ocb->dmamap,
2707 			(ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2708 			BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
2709 		bus_dmamap_unload(sdev->target->sbp->dmat, ocb->dmamap);
2710 	}
2711 	if (ocb->ccb != NULL) {
2712 		callout_stop(&ocb->ccb->ccb_h.timeout_ch);
2713 		ocb->ccb->ccb_h.status = status;
2714 		xpt_done(ocb->ccb);
2715 	}
2716 	sbp_free_ocb(sdev, ocb);
2717 }
2718 
2719 static void
2720 sbp_abort_all_ocbs(struct sbp_dev *sdev, int status)
2721 {
2722 	struct sbp_ocb *ocb, *next;
2723 	STAILQ_HEAD(, sbp_ocb) temp;
2724 
2725 	crit_enter();
2726 	bcopy(&sdev->ocbs, &temp, sizeof(temp));
2727 	STAILQ_INIT(&sdev->ocbs);
2728 	for (ocb = STAILQ_FIRST(&temp); ocb != NULL; ocb = next) {
2729 		next = STAILQ_NEXT(ocb, ocb);
2730 		sbp_abort_ocb(ocb, status);
2731 	}
2732 	crit_exit();
2733 }
2734 
2735 static devclass_t sbp_devclass;
2736 
2737 /*
2738  * Because sbp is a static device that always exists under any attached
2739  * firewire device, and not scanned by the firewire device, we need an
2740  * identify function to install the device.  For our sanity we want
2741  * the sbp device to have the same unit number as the fireweire device.
2742  */
2743 
2744 static device_method_t sbp_methods[] = {
2745 	/* device interface */
2746 	DEVMETHOD(device_identify,	bus_generic_identify_sameunit),
2747 	DEVMETHOD(device_probe,		sbp_probe),
2748 	DEVMETHOD(device_attach,	sbp_attach),
2749 	DEVMETHOD(device_detach,	sbp_detach),
2750 	DEVMETHOD(device_shutdown,	sbp_shutdown),
2751 
2752 	{ 0, 0 }
2753 };
2754 
2755 static driver_t sbp_driver = {
2756 	"sbp",
2757 	sbp_methods,
2758 	sizeof(struct sbp_softc),
2759 };
2760 
2761 DECLARE_DUMMY_MODULE(sbp);
2762 DRIVER_MODULE(sbp, firewire, sbp_driver, sbp_devclass, 0, 0);
2763 MODULE_VERSION(sbp, 1);
2764 MODULE_DEPEND(sbp, firewire, 1, 1, 1);
2765 MODULE_DEPEND(sbp, cam, 1, 1, 1);
2766