kernel/disk: Remove some unused variables and add __debugvar.
[dragonfly.git] / sys / dev / disk / sbp / sbp.c
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  */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/conf.h>
40 #include <sys/module.h>
41 #include <sys/bus.h>
42 #include <sys/kernel.h>
43 #include <sys/sysctl.h>
44 #include <sys/malloc.h>
45 #include <sys/thread2.h>
46
47 #include <bus/cam/cam.h>
48 #include <bus/cam/cam_ccb.h>
49 #include <bus/cam/cam_sim.h>
50 #include <bus/cam/cam_xpt_sim.h>
51 #include <bus/cam/cam_debug.h>
52 #include <bus/cam/cam_periph.h>
53 #include <bus/cam/scsi/scsi_all.h>
54
55 #include <bus/firewire/firewire.h>
56 #include <bus/firewire/firewirereg.h>
57 #include <bus/firewire/fwdma.h>
58 #include <bus/firewire/iec13213.h>
59 #include "sbp.h"
60
61 #define ccb_sdev_ptr    spriv_ptr0
62 #define ccb_sbp_ptr     spriv_ptr1
63
64 #define SBP_NUM_TARGETS 8 /* MAX 64 */
65 /*
66  * Scan_bus doesn't work for more than 8 LUNs
67  * because of CAM_SCSI2_MAXLUN in cam_xpt.c
68  */
69 #define SBP_NUM_LUNS 64
70 #define SBP_DMA_SIZE PAGE_SIZE
71 #define SBP_LOGIN_SIZE sizeof(struct sbp_login_res)
72 #define SBP_QUEUE_LEN ((SBP_DMA_SIZE - SBP_LOGIN_SIZE) / sizeof(struct sbp_ocb))
73 #define SBP_NUM_OCB (SBP_QUEUE_LEN * SBP_NUM_TARGETS)
74
75 /* 
76  * STATUS FIFO addressing
77  *   bit
78  * -----------------------
79  *  0- 1( 2): 0 (alingment)
80  *  2- 7( 6): target
81  *  8-15( 8): lun
82  * 16-31( 8): reserved
83  * 32-47(16): SBP_BIND_HI 
84  * 48-64(16): bus_id, node_id 
85  */
86 #define SBP_BIND_HI 0x1
87 #define SBP_DEV2ADDR(t, l) \
88         (((u_int64_t)SBP_BIND_HI << 32) \
89         | (((l) & 0xff) << 8) \
90         | (((t) & 0x3f) << 2))
91 #define SBP_ADDR2TRG(a) (((a) >> 2) & 0x3f)
92 #define SBP_ADDR2LUN(a) (((a) >> 8) & 0xff)
93 #define SBP_INITIATOR 7
94
95 static char *orb_fun_name[] = {
96         ORB_FUN_NAMES
97 };
98
99 static int debug = 0;
100 static int auto_login = 1;
101 static int max_speed = -1;
102 #if 0
103 static int sbp_cold = 1;
104 #endif
105 static int ex_login = 1;
106 static int login_delay = 1000;  /* msec */
107 static int scan_delay = 500;    /* msec */
108 static int sbp_tags = 0;
109
110 SYSCTL_DECL(_hw_firewire);
111 SYSCTL_NODE(_hw_firewire, OID_AUTO, sbp, CTLFLAG_RD, 0, "SBP-II Subsystem");
112 SYSCTL_INT(_debug, OID_AUTO, sbp_debug, CTLFLAG_RW, &debug, 0,
113         "SBP debug flag");
114 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, auto_login, CTLFLAG_RW, &auto_login, 0,
115         "SBP perform login automatically");
116 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, max_speed, CTLFLAG_RW, &max_speed, 0,
117         "SBP transfer max speed");
118 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, exclusive_login, CTLFLAG_RW,
119         &ex_login, 0, "SBP transfer max speed");
120 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, login_delay, CTLFLAG_RW,
121         &login_delay, 0, "SBP login delay in msec");
122 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, scan_delay, CTLFLAG_RW,
123         &scan_delay, 0, "SBP scan delay in msec");
124 SYSCTL_INT(_hw_firewire_sbp, OID_AUTO, tags, CTLFLAG_RW, &sbp_tags, 0,
125         "SBP tagged queuing support");
126
127 TUNABLE_INT("hw.firewire.sbp.auto_login", &auto_login);
128 TUNABLE_INT("hw.firewire.sbp.max_speed", &max_speed);
129 TUNABLE_INT("hw.firewire.sbp.exclusive_login", &ex_login);
130 TUNABLE_INT("hw.firewire.sbp.login_delay", &login_delay);
131 TUNABLE_INT("hw.firewire.sbp.scan_delay", &scan_delay);
132 TUNABLE_INT("hw.firewire.sbp.tags", &sbp_tags);
133
134 #define NEED_RESPONSE 0
135
136 #define SBP_SEG_MAX rounddown(0xffff, PAGE_SIZE)
137 #ifdef __sparc64__ /* iommu */
138 #define SBP_IND_MAX howmany(MAXPHYS, SBP_SEG_MAX)
139 #else
140 #define SBP_IND_MAX howmany(MAXPHYS, PAGE_SIZE)
141 #endif
142 struct sbp_ocb {
143         STAILQ_ENTRY(sbp_ocb)   ocb;
144         union ccb       *ccb;
145         bus_addr_t      bus_addr;
146         u_int32_t       orb[8];
147 #define IND_PTR_OFFSET  (8*sizeof(u_int32_t))
148         struct ind_ptr  ind_ptr[SBP_IND_MAX];
149         struct sbp_dev  *sdev;
150         int             flags; /* XXX should be removed */
151         bus_dmamap_t    dmamap;
152 };
153
154 #define OCB_ACT_MGM 0
155 #define OCB_ACT_CMD 1
156 #define OCB_MATCH(o,s)  ((o)->bus_addr == ntohl((s)->orb_lo))
157
158 struct sbp_dev{
159 #define SBP_DEV_RESET           0       /* accept login */
160 #define SBP_DEV_LOGIN           1       /* to login */
161 #if 0
162 #define SBP_DEV_RECONN          2       /* to reconnect */
163 #endif
164 #define SBP_DEV_TOATTACH        3       /* to attach */
165 #define SBP_DEV_PROBE           4       /* scan lun */
166 #define SBP_DEV_ATTACHED        5       /* in operation */
167 #define SBP_DEV_DEAD            6       /* unavailable unit */
168 #define SBP_DEV_RETRY           7       /* unavailable unit */
169         u_int8_t status:4,
170                  timeout:4;
171         u_int8_t type;
172         u_int16_t lun_id;
173         u_int16_t freeze;
174 #define ORB_LINK_DEAD           (1 << 0)
175 #define VALID_LUN               (1 << 1)
176 #define ORB_POINTER_ACTIVE      (1 << 2)
177 #define ORB_POINTER_NEED        (1 << 3)
178         u_int16_t flags;
179         struct cam_path *path;
180         struct sbp_target *target;
181         struct fwdma_alloc dma;
182         struct sbp_login_res *login;
183         struct callout login_callout;
184         struct sbp_ocb *ocb;
185         STAILQ_HEAD(, sbp_ocb) ocbs;
186         STAILQ_HEAD(, sbp_ocb) free_ocbs;
187         char vendor[32];
188         char product[32];
189         char revision[10];
190 };
191
192 struct sbp_target {
193         int target_id;
194         int num_lun;
195         struct sbp_dev  **luns;
196         struct sbp_softc *sbp;
197         struct fw_device *fwdev;
198         u_int32_t mgm_hi, mgm_lo;
199         struct sbp_ocb *mgm_ocb_cur;
200         STAILQ_HEAD(, sbp_ocb) mgm_ocb_queue;
201         struct callout mgm_ocb_timeout;
202         struct callout scan_callout;
203         STAILQ_HEAD(, fw_xfer) xferlist;
204         int n_xfer;
205 };
206
207 struct sbp_softc {
208         struct firewire_dev_comm fd;
209         struct cam_sim  *sim;
210         struct cam_path  *path;
211         struct sbp_target targets[SBP_NUM_TARGETS];
212         struct fw_bind fwb;
213         bus_dma_tag_t   dmat;
214         struct timeval last_busreset;
215 #define SIMQ_FREEZED 1
216         int flags;
217 };
218
219 static void sbp_post_explore (void *);
220 static void sbp_recv (struct fw_xfer *);
221 static void sbp_mgm_callback (struct fw_xfer *);
222 #if 0
223 static void sbp_cmd_callback (struct fw_xfer *);
224 #endif
225 static void sbp_orb_pointer (struct sbp_dev *, struct sbp_ocb *);
226 static void sbp_execute_ocb (void *,  bus_dma_segment_t *, int, int);
227 static void sbp_free_ocb (struct sbp_dev *, struct sbp_ocb *);
228 static void sbp_abort_ocb (struct sbp_ocb *, int);
229 static void sbp_abort_all_ocbs (struct sbp_dev *, int);
230 static struct fw_xfer * sbp_write_cmd (struct sbp_dev *, int, int);
231 static struct sbp_ocb * sbp_get_ocb (struct sbp_dev *);
232 static struct sbp_ocb * sbp_enqueue_ocb (struct sbp_dev *, struct sbp_ocb *);
233 static struct sbp_ocb * sbp_dequeue_ocb (struct sbp_dev *, struct sbp_status *);
234 static void sbp_cam_detach_sdev(struct sbp_dev *);
235 static void sbp_free_sdev(struct sbp_dev *);
236 static void sbp_cam_detach_target (struct sbp_target *);
237 static void sbp_free_target (struct sbp_target *);
238 static void sbp_mgm_timeout (void *arg);
239 static void sbp_timeout (void *arg);
240 static void sbp_mgm_orb (struct sbp_dev *, int, struct sbp_ocb *);
241
242 MALLOC_DEFINE(M_SBP, "sbp", "SBP-II/FireWire");
243
244 /* cam related functions */
245 static void     sbp_action(struct cam_sim *sim, union ccb *ccb);
246 static void     sbp_poll(struct cam_sim *sim);
247 static void     sbp_cam_scan_lun(struct cam_periph *, union ccb *);
248 static void     sbp_cam_scan_target(void *arg);
249
250 static char *orb_status0[] = {
251         /* 0 */ "No additional information to report",
252         /* 1 */ "Request type not supported",
253         /* 2 */ "Speed not supported",
254         /* 3 */ "Page size not supported",
255         /* 4 */ "Access denied",
256         /* 5 */ "Logical unit not supported",
257         /* 6 */ "Maximum payload too small",
258         /* 7 */ "Reserved for future standardization",
259         /* 8 */ "Resources unavailable",
260         /* 9 */ "Function rejected",
261         /* A */ "Login ID not recognized",
262         /* B */ "Dummy ORB completed",
263         /* C */ "Request aborted",
264         /* FF */ "Unspecified error"
265 #define MAX_ORB_STATUS0 0xd
266 };
267
268 static char *orb_status1_object[] = {
269         /* 0 */ "Operation request block (ORB)",
270         /* 1 */ "Data buffer",
271         /* 2 */ "Page table",
272         /* 3 */ "Unable to specify"
273 };
274
275 static char *orb_status1_serial_bus_error[] = {
276         /* 0 */ "Missing acknowledge",
277         /* 1 */ "Reserved; not to be used",
278         /* 2 */ "Time-out error",
279         /* 3 */ "Reserved; not to be used",
280         /* 4 */ "Busy retry limit exceeded(X)",
281         /* 5 */ "Busy retry limit exceeded(A)",
282         /* 6 */ "Busy retry limit exceeded(B)",
283         /* 7 */ "Reserved for future standardization",
284         /* 8 */ "Reserved for future standardization",
285         /* 9 */ "Reserved for future standardization",
286         /* A */ "Reserved for future standardization",
287         /* B */ "Tardy retry limit exceeded",
288         /* C */ "Conflict error",
289         /* D */ "Data error",
290         /* E */ "Type error",
291         /* F */ "Address error"
292 };
293
294 /*
295  * sbp_probe()
296  */
297 static int
298 sbp_probe(device_t dev)
299 {
300         device_t pa;
301
302 SBP_DEBUG(0)
303         kprintf("sbp_probe\n");
304 END_DEBUG
305
306         pa = device_get_parent(dev);
307         if(device_get_unit(dev) != device_get_unit(pa)){
308                 return(ENXIO);
309         }
310
311         device_set_desc(dev, "SBP-2/SCSI over FireWire");
312
313         if (bootverbose)
314                 debug = bootverbose;
315         return (0);
316 }
317
318 static void
319 sbp_show_sdev_info(struct sbp_dev *sdev, int new)
320 {
321         struct fw_device *fwdev;
322
323         kprintf("%s:%d:%d ",
324                 device_get_nameunit(sdev->target->sbp->fd.dev),
325                 sdev->target->target_id,
326                 sdev->lun_id
327         );
328         if (new == 2) {
329                 return;
330         }
331         fwdev = sdev->target->fwdev;
332         kprintf("ordered:%d type:%d EUI:%08x%08x node:%d "
333                 "speed:%d maxrec:%d",
334                 (sdev->type & 0x40) >> 6,
335                 (sdev->type & 0x1f),
336                 fwdev->eui.hi,
337                 fwdev->eui.lo,
338                 fwdev->dst,
339                 fwdev->speed,
340                 fwdev->maxrec
341         );
342         if (new)
343                 kprintf(" new!\n");
344         else
345                 kprintf("\n");
346         sbp_show_sdev_info(sdev, 2);
347         kprintf("'%s' '%s' '%s'\n", sdev->vendor, sdev->product, sdev->revision);
348 }
349
350 static struct {
351         int bus;
352         int target;
353         struct fw_eui64 eui;
354 } wired[] = {
355         /* Bus  Target  EUI64 */
356 #if 0
357         {0,     2,      {0x00018ea0, 0x01fd0154}},      /* Logitec HDD */
358         {0,     0,      {0x00018ea6, 0x00100682}},      /* Logitec DVD */
359         {0,     1,      {0x00d03200, 0xa412006a}},      /* Yano HDD */
360 #endif
361         {-1,    -1,     {0,0}}
362 };
363
364 static int
365 sbp_new_target(struct sbp_softc *sbp, struct fw_device *fwdev)
366 {
367         int bus, i, target=-1;
368         char w[SBP_NUM_TARGETS];
369
370         bzero(w, sizeof(w));
371         bus = device_get_unit(sbp->fd.dev);
372
373         /* XXX wired-down configuration should be gotten from
374                                         tunable or device hint */
375         for (i = 0; wired[i].bus >= 0; i ++) {
376                 if (wired[i].bus == bus) {
377                         w[wired[i].target] = 1;
378                         if (wired[i].eui.hi == fwdev->eui.hi &&
379                                         wired[i].eui.lo == fwdev->eui.lo)
380                                 target = wired[i].target;
381                 }
382         }
383         if (target >= 0) {
384                 if(target < SBP_NUM_TARGETS &&
385                                 sbp->targets[target].fwdev == NULL)
386                         return(target);
387                 device_printf(sbp->fd.dev,
388                         "target %d is not free for %08x:%08x\n", 
389                         target, fwdev->eui.hi, fwdev->eui.lo);
390                 target = -1;
391         }
392         /* non-wired target */
393         for (i = 0; i < SBP_NUM_TARGETS; i ++)
394                 if (sbp->targets[i].fwdev == NULL && w[i] == 0) {
395                         target = i;
396                         break;
397                 }
398
399         return target;
400 }
401
402 static void
403 sbp_alloc_lun(struct sbp_target *target)
404 {
405         struct crom_context cc;
406         struct csrreg *reg;
407         struct sbp_dev *sdev, **newluns;
408         struct sbp_softc *sbp;
409         int maxlun, lun, i;
410
411         sbp = target->sbp;
412         crom_init_context(&cc, target->fwdev->csrrom);
413         /* XXX shoud parse appropriate unit directories only */
414         maxlun = -1;
415         while (cc.depth >= 0) {
416                 reg = crom_search_key(&cc, CROM_LUN);
417                 if (reg == NULL)
418                         break;
419                 lun = reg->val & 0xffff;
420 SBP_DEBUG(0)
421                 kprintf("target %d lun %d found\n", target->target_id, lun);
422 END_DEBUG
423                 if (maxlun < lun)
424                         maxlun = lun;
425                 crom_next(&cc);
426         }
427         if (maxlun < 0)
428                 kprintf("%s:%d no LUN found\n",
429                     device_get_nameunit(target->sbp->fd.dev),
430                     target->target_id);
431
432         maxlun ++;
433         if (maxlun >= SBP_NUM_LUNS)
434                 maxlun = SBP_NUM_LUNS;
435
436         /* Invalidiate stale devices */
437         for (lun = 0; lun < target->num_lun; lun ++) {
438                 sdev = target->luns[lun];
439                 if (sdev == NULL)
440                         continue;
441                 sdev->flags &= ~VALID_LUN;
442                 if (lun >= maxlun) {
443                         /* lost device */
444                         sbp_cam_detach_sdev(sdev);
445                         sbp_free_sdev(sdev);
446                 }
447         }
448
449         /* Reallocate */
450         if (maxlun != target->num_lun) {
451                 /*
452                  * note: krealloc() does not support M_ZERO.  We must zero
453                  * the extended region manually.
454                  */
455                 newluns = krealloc(target->luns, 
456                                 sizeof(struct sbp_dev *) * maxlun,
457                                 M_SBP, M_WAITOK);
458
459                 if (maxlun > target->num_lun) {
460                         bzero(&newluns[target->num_lun],
461                             sizeof(struct sbp_dev *) *
462                              (maxlun - target->num_lun));
463                 }
464                 target->luns = newluns;
465                 target->num_lun = maxlun;
466         }
467
468         crom_init_context(&cc, target->fwdev->csrrom);
469         while (cc.depth >= 0) {
470                 int new = 0;
471
472                 reg = crom_search_key(&cc, CROM_LUN);
473                 if (reg == NULL)
474                         break;
475                 lun = reg->val & 0xffff;
476                 if (lun >= SBP_NUM_LUNS) {
477                         kprintf("too large lun %d\n", lun);
478                         goto next;
479                 }
480
481                 sdev = target->luns[lun];
482                 if (sdev == NULL) {
483                         sdev = kmalloc(sizeof(struct sbp_dev),
484                             M_SBP, M_WAITOK | M_ZERO);
485                         target->luns[lun] = sdev;
486                         sdev->lun_id = lun;
487                         sdev->target = target;
488                         STAILQ_INIT(&sdev->ocbs);
489                         CALLOUT_INIT(&sdev->login_callout);
490                         sdev->status = SBP_DEV_RESET;
491                         new = 1;
492                 }
493                 sdev->flags |= VALID_LUN;
494                 sdev->type = (reg->val & 0xff0000) >> 16;
495
496                 if (new == 0)
497                         goto next;
498
499                 fwdma_malloc(sbp->fd.fc, 
500                         /* alignment */ sizeof(u_int32_t),
501                         SBP_DMA_SIZE, &sdev->dma, BUS_DMA_NOWAIT);
502                 if (sdev->dma.v_addr == NULL) {
503                         kprintf("%s: dma space allocation failed\n",
504                                                         __func__);
505                         kfree(sdev, M_SBP);
506                         target->luns[lun] = NULL;
507                         goto next;
508                 }
509                 sdev->login = (struct sbp_login_res *) sdev->dma.v_addr;
510                 sdev->ocb = (struct sbp_ocb *)
511                                 ((char *)sdev->dma.v_addr + SBP_LOGIN_SIZE);
512                 bzero((char *)sdev->ocb,
513                         sizeof (struct sbp_ocb) * SBP_QUEUE_LEN);
514
515                 STAILQ_INIT(&sdev->free_ocbs);
516                 for (i = 0; i < SBP_QUEUE_LEN; i++) {
517                         struct sbp_ocb *ocb;
518                         ocb = &sdev->ocb[i];
519                         ocb->bus_addr = sdev->dma.bus_addr
520                                 + SBP_LOGIN_SIZE
521                                 + sizeof(struct sbp_ocb) * i
522                                 + offsetof(struct sbp_ocb, orb[0]);
523                         if (bus_dmamap_create(sbp->dmat, 0, &ocb->dmamap)) {
524                                 kprintf("sbp_attach: cannot create dmamap\n");
525                                 /* XXX */
526                                 goto next;
527                         }
528                         sbp_free_ocb(sdev, ocb);
529                 }
530 next:
531                 crom_next(&cc);
532         }
533
534         for (lun = 0; lun < target->num_lun; lun ++) {
535                 sdev = target->luns[lun];
536                 if (sdev != NULL && (sdev->flags & VALID_LUN) == 0) {
537                         sbp_cam_detach_sdev(sdev);
538                         sbp_free_sdev(sdev);
539                         target->luns[lun] = NULL;
540                 }
541         }
542 }
543
544 static struct sbp_target *
545 sbp_alloc_target(struct sbp_softc *sbp, struct fw_device *fwdev)
546 {
547         int i;
548         struct sbp_target *target;
549         struct crom_context cc;
550         struct csrreg *reg;
551
552 SBP_DEBUG(1)
553         kprintf("sbp_alloc_target\n");
554 END_DEBUG
555         i = sbp_new_target(sbp, fwdev);
556         if (i < 0) {
557                 device_printf(sbp->fd.dev, "increase SBP_NUM_TARGETS!\n");
558                 return NULL;
559         }
560         /* new target */
561         target = &sbp->targets[i];
562         target->sbp = sbp;
563         target->fwdev = fwdev;
564         target->target_id = i;
565         /* XXX we may want to reload mgm port after each bus reset */
566         /* XXX there might be multiple management agents */
567         crom_init_context(&cc, target->fwdev->csrrom);
568         reg = crom_search_key(&cc, CROM_MGM);
569         if (reg == NULL || reg->val == 0) {
570                 kprintf("NULL management address\n");
571                 target->fwdev = NULL;
572                 return NULL;
573         }
574         target->mgm_hi = 0xffff;
575         target->mgm_lo = 0xf0000000 | (reg->val << 2);
576         target->mgm_ocb_cur = NULL;
577 SBP_DEBUG(1)
578         kprintf("target:%d mgm_port: %x\n", i, target->mgm_lo);
579 END_DEBUG
580         STAILQ_INIT(&target->xferlist);
581         target->n_xfer = 0;
582         STAILQ_INIT(&target->mgm_ocb_queue);
583         CALLOUT_INIT(&target->mgm_ocb_timeout);
584         CALLOUT_INIT(&target->scan_callout);
585
586         target->luns = NULL;
587         target->num_lun = 0;
588         return target;
589 }
590
591 static void
592 sbp_probe_lun(struct sbp_dev *sdev)
593 {
594         struct fw_device *fwdev;
595         struct crom_context c, *cc = &c;
596         struct csrreg *reg;
597
598         bzero(sdev->vendor, sizeof(sdev->vendor));
599         bzero(sdev->product, sizeof(sdev->product));
600
601         fwdev = sdev->target->fwdev;
602         crom_init_context(cc, fwdev->csrrom);
603         /* get vendor string */
604         crom_search_key(cc, CSRKEY_VENDOR);
605         crom_next(cc);
606         crom_parse_text(cc, sdev->vendor, sizeof(sdev->vendor));
607         /* skip to the unit directory for SBP-2 */
608         while ((reg = crom_search_key(cc, CSRKEY_VER)) != NULL) {
609                 if (reg->val == CSRVAL_T10SBP2)
610                         break;
611                 crom_next(cc);
612         }
613         /* get firmware revision */
614         reg = crom_search_key(cc, CSRKEY_FIRM_VER);
615         if (reg != NULL)
616                 ksnprintf(sdev->revision, sizeof(sdev->revision),
617                                                 "%06x", reg->val);
618         /* get product string */
619         crom_search_key(cc, CSRKEY_MODEL);
620         crom_next(cc);
621         crom_parse_text(cc, sdev->product, sizeof(sdev->product));
622 }
623
624 static void
625 sbp_login_callout(void *arg)
626 {
627         struct sbp_dev *sdev = (struct sbp_dev *)arg;
628         sbp_mgm_orb(sdev, ORB_FUN_LGI, NULL);
629 }
630
631 static void
632 sbp_login(struct sbp_dev *sdev)
633 {
634         struct timeval delta;
635         struct timeval t;
636         int ticks = 0;
637
638         microtime(&delta);
639         timevalsub(&delta, &sdev->target->sbp->last_busreset);
640         t.tv_sec = login_delay / 1000;
641         t.tv_usec = (login_delay % 1000) * 1000;
642         timevalsub(&t, &delta);
643         if (t.tv_sec >= 0 && t.tv_usec > 0)
644                 ticks = (t.tv_sec * 1000 + t.tv_usec / 1000) * hz / 1000;
645 SBP_DEBUG(0)
646         kprintf("%s: sec = %ld usec = %ld ticks = %d\n", __func__,
647             t.tv_sec, t.tv_usec, ticks);
648 END_DEBUG
649         callout_reset(&sdev->login_callout, ticks,
650                         sbp_login_callout, (void *)(sdev));
651 }
652
653 #define SBP_FWDEV_ALIVE(fwdev) (((fwdev)->status == FWDEVATTACHED) \
654         && crom_has_specver((fwdev)->csrrom, CSRVAL_ANSIT10, CSRVAL_T10SBP2))
655
656 static void
657 sbp_probe_target(void *arg)
658 {
659         struct sbp_target *target = (struct sbp_target *)arg;
660         struct sbp_dev *sdev;
661         int i, alive;
662
663         alive = SBP_FWDEV_ALIVE(target->fwdev);
664 SBP_DEBUG(1)
665         kprintf("sbp_probe_target %d\n", target->target_id);
666         if (!alive)
667                 kprintf("not alive\n");
668 END_DEBUG
669
670         sbp_alloc_lun(target);
671
672         /* XXX callout_stop mgm_ocb and dequeue */
673         for (i=0; i < target->num_lun; i++) {
674                 sdev = target->luns[i];
675                 if (sdev == NULL)
676                         continue;
677                 if (alive && (sdev->status != SBP_DEV_DEAD)) {
678                         if (sdev->path != NULL) {
679                                 xpt_freeze_devq(sdev->path, 1);
680                                 sdev->freeze ++;
681                         }
682                         sbp_probe_lun(sdev);
683 SBP_DEBUG(0)
684                         sbp_show_sdev_info(sdev, 
685                                         (sdev->status == SBP_DEV_RESET));
686 END_DEBUG
687
688                         sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
689                         switch (sdev->status) {
690                         case SBP_DEV_RESET:
691                                 /* new or revived target */
692                                 if (auto_login)
693                                         sbp_login(sdev);
694                                 break;
695                         case SBP_DEV_TOATTACH:
696                         case SBP_DEV_PROBE:
697                         case SBP_DEV_ATTACHED:
698                         case SBP_DEV_RETRY:
699                         default:
700                                 sbp_mgm_orb(sdev, ORB_FUN_RCN, NULL);
701                                 break;
702                         }
703                 } else {
704                         switch (sdev->status) {
705                         case SBP_DEV_ATTACHED:
706 SBP_DEBUG(0)
707                                 /* the device has gone */
708                                 sbp_show_sdev_info(sdev, 2);
709                                 kprintf("lost target\n");
710 END_DEBUG
711 #if 0
712                                 if (sdev->path) {
713                                         xpt_freeze_devq(sdev->path, 1);
714                                         sdev->freeze ++;
715                                 }
716                                 sdev->status = SBP_DEV_RETRY;
717                                 sbp_abort_all_ocbs(sdev, CAM_SCSI_BUS_RESET);
718 #endif
719                                 sbp_cam_detach_target(sdev->target);
720                                 sdev->status = SBP_DEV_RESET;
721                                 break;
722                         case SBP_DEV_PROBE:
723                         case SBP_DEV_TOATTACH:
724                                 sdev->status = SBP_DEV_RESET;
725                                 break;
726                         case SBP_DEV_RETRY:
727                         case SBP_DEV_RESET:
728                         case SBP_DEV_DEAD:
729                                 break;
730                         }
731                 }
732         }
733 }
734
735 static void
736 sbp_post_busreset(void *arg)
737 {
738         struct sbp_softc *sbp;
739
740         sbp = (struct sbp_softc *)arg;
741 SBP_DEBUG(0)
742         kprintf("sbp_post_busreset\n");
743 END_DEBUG
744         if ((sbp->sim->flags & SIMQ_FREEZED) == 0) {
745                 xpt_freeze_simq(sbp->sim, /*count*/1);
746                 sbp->sim->flags |= SIMQ_FREEZED;
747         }
748         microtime(&sbp->last_busreset);
749 }
750
751 static void
752 sbp_post_explore(void *arg)
753 {
754         struct sbp_softc *sbp = (struct sbp_softc *)arg;
755         struct sbp_target *target;
756         struct fw_device *fwdev;
757         int i, alive;
758
759 SBP_DEBUG(0)
760         kprintf("sbp_post_explore\n");
761 END_DEBUG
762 #if 0
763         if (sbp_cold > 0)
764                 sbp_cold --;
765 #endif
766
767 #if 0
768         /*
769          * XXX don't let CAM the bus rest.
770          * CAM tries to do something with freezed (DEV_RETRY) devices.
771          */
772         xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
773 #endif
774
775         /* Gabage Collection */
776         for(i = 0 ; i < SBP_NUM_TARGETS ; i ++){
777                 target = &sbp->targets[i];
778                 STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link)
779                         if (target->fwdev == NULL || target->fwdev == fwdev)
780                                 break;
781                 if (fwdev == NULL) {
782                         /* device has removed in lower driver */
783                         sbp_cam_detach_target(target);
784                         sbp_free_target(target);
785                 }
786         }
787         /* traverse device list */
788         STAILQ_FOREACH(fwdev, &sbp->fd.fc->devices, link) {
789 SBP_DEBUG(0)
790                 kprintf("sbp_post_explore: EUI:%08x%08x ",
791                                 fwdev->eui.hi, fwdev->eui.lo);
792                 if (fwdev->status != FWDEVATTACHED)
793                         kprintf("not attached, state=%d.\n", fwdev->status);
794                 else
795                         kprintf("attached\n");
796 END_DEBUG
797                 alive = SBP_FWDEV_ALIVE(fwdev);
798                 for(i = 0 ; i < SBP_NUM_TARGETS ; i ++){
799                         target = &sbp->targets[i];
800                         if(target->fwdev == fwdev ) {
801                                 /* known target */
802                                 break;
803                         }
804                 }
805                 if(i == SBP_NUM_TARGETS){
806                         if (alive) {
807                                 /* new target */
808                                 target = sbp_alloc_target(sbp, fwdev);
809                                 if (target == NULL)
810                                         continue;
811                         } else {
812                                 continue;
813                         }
814                 }
815                 sbp_probe_target((void *)target);
816                 if (target->num_lun == 0)
817                         sbp_free_target(target);
818         }
819         xpt_release_simq(sbp->sim, /*run queue*/TRUE);
820         sbp->sim->flags &= ~SIMQ_FREEZED;
821 }
822
823 #if NEED_RESPONSE
824 static void
825 sbp_loginres_callback(struct fw_xfer *xfer){
826         struct sbp_dev *sdev;
827         sdev = (struct sbp_dev *)xfer->sc;
828 SBP_DEBUG(1)
829         sbp_show_sdev_info(sdev, 2);
830         kprintf("sbp_loginres_callback\n");
831 END_DEBUG
832         /* recycle */
833         crit_enter();
834         STAILQ_INSERT_TAIL(&sdev->target->sbp->fwb.xferlist, xfer, link);
835         crit_exit();
836         return;
837 }
838 #endif
839
840 static __inline void
841 sbp_xfer_free(struct fw_xfer *xfer)
842 {
843         struct sbp_dev *sdev;
844
845         sdev = (struct sbp_dev *)xfer->sc;
846         fw_xfer_unload(xfer);
847         crit_enter();
848         STAILQ_INSERT_TAIL(&sdev->target->xferlist, xfer, link);
849         crit_exit();
850 }
851
852 static void
853 sbp_reset_start_callback(struct fw_xfer *xfer)
854 {
855         struct sbp_dev *tsdev, *sdev = (struct sbp_dev *)xfer->sc;
856         struct sbp_target *target = sdev->target;
857         int i;
858
859         if (xfer->resp != 0) {
860                 sbp_show_sdev_info(sdev, 2);
861                 kprintf("sbp_reset_start failed: resp=%d\n", xfer->resp);
862         }
863
864         for (i = 0; i < target->num_lun; i++) {
865                 tsdev = target->luns[i];
866                 if (tsdev != NULL && tsdev->status == SBP_DEV_LOGIN)
867                         sbp_login(tsdev);
868         }
869 }
870
871 static void
872 sbp_reset_start(struct sbp_dev *sdev)
873 {
874         struct fw_xfer *xfer;
875         struct fw_pkt *fp;
876
877 SBP_DEBUG(0)
878         sbp_show_sdev_info(sdev, 2);
879         kprintf("sbp_reset_start\n");
880 END_DEBUG
881
882         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
883         xfer->act.hand = sbp_reset_start_callback;
884         fp = &xfer->send.hdr;
885         fp->mode.wreqq.dest_hi = 0xffff;
886         fp->mode.wreqq.dest_lo = 0xf0000000 | RESET_START;
887         fp->mode.wreqq.data = htonl(0xf);
888         fw_asyreq(xfer->fc, -1, xfer);
889 }
890
891 static void
892 sbp_mgm_callback(struct fw_xfer *xfer)
893 {
894         struct sbp_dev *sdev;
895 #if 0
896         int resp;
897 #endif
898
899         sdev = (struct sbp_dev *)xfer->sc;
900
901 SBP_DEBUG(1)
902         sbp_show_sdev_info(sdev, 2);
903         kprintf("sbp_mgm_callback\n");
904 END_DEBUG
905 #if 0
906         resp = xfer->resp;
907 #endif
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
1009         sdev = (struct sbp_dev *)xfer->sc;
1010         target = sdev->target;
1011 SBP_DEBUG(0)
1012         sbp_show_sdev_info(sdev, 2);
1013         kprintf("sbp_do_attach\n");
1014 END_DEBUG
1015         sbp_xfer_free(xfer);
1016
1017         if (sdev->path == NULL)
1018                 xpt_create_path(&sdev->path, xpt_periph,
1019                         cam_sim_path(target->sbp->sim),
1020                         target->target_id, sdev->lun_id);
1021
1022 #if 0
1023         /*
1024          * Let CAM scan the bus if we are in the boot process.
1025          * XXX xpt_scan_bus cannot detect LUN larger than 0
1026          * if LUN 0 doesn't exists.
1027          */
1028         if (sbp_cold > 0) {
1029                 sdev->status = SBP_DEV_ATTACHED;
1030                 return;
1031         }
1032 #endif
1033
1034         sbp_scan_dev(sdev);
1035         return;
1036 }
1037
1038 static void
1039 sbp_agent_reset_callback(struct fw_xfer *xfer)
1040 {
1041         struct sbp_dev *sdev;
1042
1043         sdev = (struct sbp_dev *)xfer->sc;
1044 SBP_DEBUG(1)
1045         sbp_show_sdev_info(sdev, 2);
1046         kprintf("%s\n", __func__);
1047 END_DEBUG
1048         if (xfer->resp != 0) {
1049                 sbp_show_sdev_info(sdev, 2);
1050                 kprintf("%s: resp=%d\n", __func__, xfer->resp);
1051         }
1052
1053         sbp_xfer_free(xfer);
1054         if (sdev->path) {
1055                 xpt_release_devq(sdev->path, sdev->freeze, TRUE);
1056                 sdev->freeze = 0;
1057         }
1058 }
1059
1060 static void
1061 sbp_agent_reset(struct sbp_dev *sdev)
1062 {
1063         struct fw_xfer *xfer;
1064         struct fw_pkt *fp;
1065
1066 SBP_DEBUG(0)
1067         sbp_show_sdev_info(sdev, 2);
1068         kprintf("sbp_agent_reset\n");
1069 END_DEBUG
1070         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x04);
1071         if (xfer == NULL)
1072                 return;
1073         if (sdev->status == SBP_DEV_ATTACHED || sdev->status == SBP_DEV_PROBE)
1074                 xfer->act.hand = sbp_agent_reset_callback;
1075         else
1076                 xfer->act.hand = sbp_do_attach;
1077         fp = &xfer->send.hdr;
1078         fp->mode.wreqq.data = htonl(0xf);
1079         fw_asyreq(xfer->fc, -1, xfer);
1080         sbp_abort_all_ocbs(sdev, CAM_BDR_SENT);
1081 }
1082
1083 static void
1084 sbp_busy_timeout_callback(struct fw_xfer *xfer)
1085 {
1086         struct sbp_dev *sdev;
1087
1088         sdev = (struct sbp_dev *)xfer->sc;
1089 SBP_DEBUG(1)
1090         sbp_show_sdev_info(sdev, 2);
1091         kprintf("sbp_busy_timeout_callback\n");
1092 END_DEBUG
1093         sbp_xfer_free(xfer);
1094         sbp_agent_reset(sdev);
1095 }
1096
1097 static void
1098 sbp_busy_timeout(struct sbp_dev *sdev)
1099 {
1100         struct fw_pkt *fp;
1101         struct fw_xfer *xfer;
1102 SBP_DEBUG(0)
1103         sbp_show_sdev_info(sdev, 2);
1104         kprintf("sbp_busy_timeout\n");
1105 END_DEBUG
1106         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0);
1107
1108         xfer->act.hand = sbp_busy_timeout_callback;
1109         fp = &xfer->send.hdr;
1110         fp->mode.wreqq.dest_hi = 0xffff;
1111         fp->mode.wreqq.dest_lo = 0xf0000000 | BUSY_TIMEOUT;
1112         fp->mode.wreqq.data = htonl((1 << (13+12)) | 0xf);
1113         fw_asyreq(xfer->fc, -1, xfer);
1114 }
1115
1116 static void
1117 sbp_orb_pointer_callback(struct fw_xfer *xfer)
1118 {
1119         struct sbp_dev *sdev;
1120         sdev = (struct sbp_dev *)xfer->sc;
1121
1122 SBP_DEBUG(1)
1123         sbp_show_sdev_info(sdev, 2);
1124         kprintf("%s\n", __func__);
1125 END_DEBUG
1126         if (xfer->resp != 0) {
1127                 /* XXX */
1128                 kprintf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1129         }
1130         sbp_xfer_free(xfer);
1131         sdev->flags &= ~ORB_POINTER_ACTIVE;
1132
1133         if ((sdev->flags & ORB_POINTER_NEED) != 0) {
1134                 struct sbp_ocb *ocb;
1135
1136                 sdev->flags &= ~ORB_POINTER_NEED;
1137                 ocb = STAILQ_FIRST(&sdev->ocbs);
1138                 if (ocb != NULL)
1139                         sbp_orb_pointer(sdev, ocb);
1140         }
1141         return;
1142 }
1143
1144 static void
1145 sbp_orb_pointer(struct sbp_dev *sdev, struct sbp_ocb *ocb)
1146 {
1147         struct fw_xfer *xfer;
1148         struct fw_pkt *fp;
1149 SBP_DEBUG(1)
1150         sbp_show_sdev_info(sdev, 2);
1151         kprintf("%s: 0x%08x\n", __func__, (u_int32_t)ocb->bus_addr);
1152 END_DEBUG
1153
1154         if ((sdev->flags & ORB_POINTER_ACTIVE) != 0) {
1155 SBP_DEBUG(0)
1156                 kprintf("%s: orb pointer active\n", __func__);
1157 END_DEBUG
1158                 sdev->flags |= ORB_POINTER_NEED;
1159                 return;
1160         }
1161
1162         sdev->flags |= ORB_POINTER_ACTIVE;
1163         xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0x08);
1164         if (xfer == NULL)
1165                 return;
1166         xfer->act.hand = sbp_orb_pointer_callback;
1167
1168         fp = &xfer->send.hdr;
1169         fp->mode.wreqb.len = 8;
1170         fp->mode.wreqb.extcode = 0;
1171         xfer->send.payload[0] = 
1172                 htonl(((sdev->target->sbp->fd.fc->nodeid | FWLOCALBUS )<< 16));
1173         xfer->send.payload[1] = htonl((u_int32_t)ocb->bus_addr);
1174
1175         if(fw_asyreq(xfer->fc, -1, xfer) != 0){
1176                         sbp_xfer_free(xfer);
1177                         ocb->ccb->ccb_h.status = CAM_REQ_INVALID;
1178                         xpt_done(ocb->ccb);
1179         }
1180 }
1181
1182 #if 0
1183 static void
1184 sbp_cmd_callback(struct fw_xfer *xfer)
1185 {
1186 SBP_DEBUG(1)
1187         struct sbp_dev *sdev;
1188         sdev = (struct sbp_dev *)xfer->sc;
1189         sbp_show_sdev_info(sdev, 2);
1190         kprintf("sbp_cmd_callback\n");
1191 END_DEBUG
1192         if (xfer->resp != 0) {
1193                 /* XXX */
1194                 kprintf("%s: xfer->resp = %d\n", __func__, xfer->resp);
1195         }
1196         sbp_xfer_free(xfer);
1197         return;
1198 }
1199
1200 static void
1201 sbp_doorbell(struct sbp_dev *sdev)
1202 {
1203         struct fw_xfer *xfer;
1204         struct fw_pkt *fp;
1205 SBP_DEBUG(1)
1206         sbp_show_sdev_info(sdev, 2);
1207         kprintf("sbp_doorbell\n");
1208 END_DEBUG
1209
1210         xfer = sbp_write_cmd(sdev, FWTCODE_WREQQ, 0x10);
1211         if (xfer == NULL)
1212                 return;
1213         xfer->act.hand = sbp_cmd_callback;
1214         fp = (struct fw_pkt *)xfer->send.buf;
1215         fp->mode.wreqq.data = htonl(0xf);
1216         fw_asyreq(xfer->fc, -1, xfer);
1217 }
1218 #endif
1219
1220 static struct fw_xfer *
1221 sbp_write_cmd(struct sbp_dev *sdev, int tcode, int offset)
1222 {
1223         struct fw_xfer *xfer;
1224         struct fw_pkt *fp;
1225         struct sbp_target *target;
1226         int new = 0;
1227
1228         target = sdev->target;
1229         crit_enter();
1230         xfer = STAILQ_FIRST(&target->xferlist);
1231         if (xfer == NULL) {
1232                 if (target->n_xfer > 5 /* XXX */) {
1233                         kprintf("sbp: no more xfer for this target\n");
1234                         crit_exit();
1235                         return(NULL);
1236                 }
1237                 xfer = fw_xfer_alloc_buf(M_SBP, 8, 0);
1238                 if(xfer == NULL){
1239                         kprintf("sbp: fw_xfer_alloc_buf failed\n");
1240                         crit_exit();
1241                         return NULL;
1242                 }
1243                 target->n_xfer ++;
1244                 if (debug)
1245                         kprintf("sbp: alloc %d xfer\n", target->n_xfer);
1246                 new = 1;
1247         } else {
1248                 STAILQ_REMOVE_HEAD(&target->xferlist, link);
1249         }
1250         crit_exit();
1251
1252         microtime(&xfer->tv);
1253
1254         if (new) {
1255                 xfer->recv.pay_len = 0;
1256                 xfer->send.spd = min(sdev->target->fwdev->speed, max_speed);
1257                 xfer->fc = sdev->target->sbp->fd.fc;
1258                 xfer->retry_req = fw_asybusy;
1259         }
1260
1261         if (tcode == FWTCODE_WREQB)
1262                 xfer->send.pay_len = 8;
1263         else
1264                 xfer->send.pay_len = 0;
1265
1266         xfer->sc = (caddr_t)sdev;
1267         fp = &xfer->send.hdr;
1268         fp->mode.wreqq.dest_hi = sdev->login->cmd_hi;
1269         fp->mode.wreqq.dest_lo = sdev->login->cmd_lo + offset;
1270         fp->mode.wreqq.tlrt = 0;
1271         fp->mode.wreqq.tcode = tcode;
1272         fp->mode.wreqq.pri = 0;
1273         fp->mode.wreqq.dst = FWLOCALBUS | sdev->target->fwdev->dst;
1274
1275         return xfer;
1276
1277 }
1278
1279 static void
1280 sbp_mgm_orb(struct sbp_dev *sdev, int func, struct sbp_ocb *aocb)
1281 {
1282         struct fw_xfer *xfer;
1283         struct fw_pkt *fp;
1284         struct sbp_ocb *ocb;
1285         struct sbp_target *target;
1286         int nid;
1287
1288         target = sdev->target;
1289         nid = target->sbp->fd.fc->nodeid | FWLOCALBUS;
1290
1291         crit_enter();
1292         if (func == ORB_FUN_RUNQUEUE) {
1293                 ocb = STAILQ_FIRST(&target->mgm_ocb_queue);
1294                 if (target->mgm_ocb_cur != NULL || ocb == NULL) {
1295                         crit_exit();
1296                         return;
1297                 }
1298                 STAILQ_REMOVE_HEAD(&target->mgm_ocb_queue, ocb);
1299                 goto start;
1300         }
1301         if ((ocb = sbp_get_ocb(sdev)) == NULL) {
1302                 crit_exit();
1303                 /* XXX */
1304                 return;
1305         }
1306         ocb->flags = OCB_ACT_MGM;
1307         ocb->sdev = sdev;
1308
1309         bzero((void *)ocb->orb, sizeof(ocb->orb));
1310         ocb->orb[6] = htonl((nid << 16) | SBP_BIND_HI);
1311         ocb->orb[7] = htonl(SBP_DEV2ADDR(target->target_id, sdev->lun_id));
1312
1313 SBP_DEBUG(0)
1314         sbp_show_sdev_info(sdev, 2);
1315         kprintf("%s\n", orb_fun_name[(func>>16)&0xf]);
1316 END_DEBUG
1317         switch (func) {
1318         case ORB_FUN_LGI:
1319                 ocb->orb[0] = ocb->orb[1] = 0; /* password */
1320                 ocb->orb[2] = htonl(nid << 16);
1321                 ocb->orb[3] = htonl(sdev->dma.bus_addr);
1322                 ocb->orb[4] = htonl(ORB_NOTIFY | sdev->lun_id);
1323                 if (ex_login)
1324                         ocb->orb[4] |= htonl(ORB_EXV);
1325                 ocb->orb[5] = htonl(SBP_LOGIN_SIZE);
1326                 fwdma_sync(&sdev->dma, BUS_DMASYNC_PREREAD);
1327                 break;
1328         case ORB_FUN_ATA:
1329                 ocb->orb[0] = htonl((0 << 16) | 0);
1330                 ocb->orb[1] = htonl(aocb->bus_addr & 0xffffffff);
1331                 /* fall through */
1332         case ORB_FUN_RCN:
1333         case ORB_FUN_LGO:
1334         case ORB_FUN_LUR:
1335         case ORB_FUN_RST:
1336         case ORB_FUN_ATS:
1337                 ocb->orb[4] = htonl(ORB_NOTIFY | func | sdev->login->id);
1338                 break;
1339         }
1340
1341         if (target->mgm_ocb_cur != NULL) {
1342                 /* there is a standing ORB */
1343                 STAILQ_INSERT_TAIL(&sdev->target->mgm_ocb_queue, ocb, ocb);
1344                 crit_exit();
1345                 return;
1346         }
1347 start:
1348         target->mgm_ocb_cur = ocb;
1349         crit_exit();
1350
1351         callout_reset(&target->mgm_ocb_timeout, 5*hz,
1352                                 sbp_mgm_timeout, (caddr_t)ocb);
1353         xfer = sbp_write_cmd(sdev, FWTCODE_WREQB, 0);
1354         if(xfer == NULL){
1355                 return;
1356         }
1357         xfer->act.hand = sbp_mgm_callback;
1358
1359         fp = &xfer->send.hdr;
1360         fp->mode.wreqb.dest_hi = sdev->target->mgm_hi;
1361         fp->mode.wreqb.dest_lo = sdev->target->mgm_lo;
1362         fp->mode.wreqb.len = 8;
1363         fp->mode.wreqb.extcode = 0;
1364         xfer->send.payload[0] = htonl(nid << 16);
1365         xfer->send.payload[1] = htonl(ocb->bus_addr & 0xffffffff);
1366 SBP_DEBUG(0)
1367         sbp_show_sdev_info(sdev, 2);
1368         kprintf("mgm orb: %08x\n", (u_int32_t)ocb->bus_addr);
1369 END_DEBUG
1370
1371         fw_asyreq(xfer->fc, -1, xfer);
1372 }
1373
1374 static void
1375 sbp_print_scsi_cmd(struct sbp_ocb *ocb)
1376 {
1377         struct ccb_scsiio *csio;
1378
1379         csio = &ocb->ccb->csio;
1380         kprintf("%s:%d:%d XPT_SCSI_IO: "
1381                 "cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
1382                 ", flags: 0x%02x, "
1383                 "%db cmd/%db data/%db sense\n",
1384                 device_get_nameunit(ocb->sdev->target->sbp->fd.dev),
1385                 ocb->ccb->ccb_h.target_id, ocb->ccb->ccb_h.target_lun,
1386                 csio->cdb_io.cdb_bytes[0],
1387                 csio->cdb_io.cdb_bytes[1],
1388                 csio->cdb_io.cdb_bytes[2],
1389                 csio->cdb_io.cdb_bytes[3],
1390                 csio->cdb_io.cdb_bytes[4],
1391                 csio->cdb_io.cdb_bytes[5],
1392                 csio->cdb_io.cdb_bytes[6],
1393                 csio->cdb_io.cdb_bytes[7],
1394                 csio->cdb_io.cdb_bytes[8],
1395                 csio->cdb_io.cdb_bytes[9],
1396                 ocb->ccb->ccb_h.flags & CAM_DIR_MASK,
1397                 csio->cdb_len, csio->dxfer_len,
1398                 csio->sense_len);
1399 }
1400
1401 static void
1402 sbp_scsi_status(struct sbp_status *sbp_status, struct sbp_ocb *ocb)
1403 {
1404         struct sbp_cmd_status *sbp_cmd_status;
1405         struct scsi_sense_data *sense;
1406
1407         sbp_cmd_status = (struct sbp_cmd_status *)sbp_status->data;
1408         sense = &ocb->ccb->csio.sense_data;
1409
1410 SBP_DEBUG(0)
1411         sbp_print_scsi_cmd(ocb);
1412         /* XXX need decode status */
1413         sbp_show_sdev_info(ocb->sdev, 2);
1414         kprintf("SCSI status %x sfmt %x valid %x key %x code %x qlfr %x len %d\n",
1415                 sbp_cmd_status->status,
1416                 sbp_cmd_status->sfmt,
1417                 sbp_cmd_status->valid,
1418                 sbp_cmd_status->s_key,
1419                 sbp_cmd_status->s_code,
1420                 sbp_cmd_status->s_qlfr,
1421                 sbp_status->len
1422         );
1423 END_DEBUG
1424
1425         switch (sbp_cmd_status->status) {
1426         case SCSI_STATUS_CHECK_COND:
1427         case SCSI_STATUS_BUSY:
1428         case SCSI_STATUS_CMD_TERMINATED:
1429                 if(sbp_cmd_status->sfmt == SBP_SFMT_CURR){
1430                         sense->error_code = SSD_CURRENT_ERROR;
1431                 }else{
1432                         sense->error_code = SSD_DEFERRED_ERROR;
1433                 }
1434                 if(sbp_cmd_status->valid)
1435                         sense->error_code |= SSD_ERRCODE_VALID;
1436                 sense->flags = sbp_cmd_status->s_key;
1437                 if(sbp_cmd_status->mark)
1438                         sense->flags |= SSD_FILEMARK;
1439                 if(sbp_cmd_status->eom)
1440                         sense->flags |= SSD_EOM;
1441                 if(sbp_cmd_status->ill_len)
1442                         sense->flags |= SSD_ILI;
1443
1444                 bcopy(&sbp_cmd_status->info, &sense->info[0], 4);
1445
1446                 if (sbp_status->len <= 1)
1447                         /* XXX not scsi status. shouldn't be happened */ 
1448                         sense->extra_len = 0;
1449                 else if (sbp_status->len <= 4)
1450                         /* add_sense_code(_qual), info, cmd_spec_info */
1451                         sense->extra_len = 6;
1452                 else
1453                         /* fru, sense_key_spec */
1454                         sense->extra_len = 10;
1455
1456                 bcopy(&sbp_cmd_status->cdb, &sense->cmd_spec_info[0], 4);
1457
1458                 sense->add_sense_code = sbp_cmd_status->s_code;
1459                 sense->add_sense_code_qual = sbp_cmd_status->s_qlfr;
1460                 sense->fru = sbp_cmd_status->fru;
1461
1462                 bcopy(&sbp_cmd_status->s_keydep[0],
1463                     &sense->sense_key_spec[0], 3);
1464
1465                 ocb->ccb->csio.scsi_status = sbp_cmd_status->status;
1466                 ocb->ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR
1467                                                         | CAM_AUTOSNS_VALID;
1468 /*
1469 {
1470                 u_int8_t j, *tmp;
1471                 tmp = sense;
1472                 for( j = 0 ; j < 32 ; j+=8){
1473                         kprintf("sense %02x%02x %02x%02x %02x%02x %02x%02x\n", 
1474                                 tmp[j], tmp[j+1], tmp[j+2], tmp[j+3],
1475                                 tmp[j+4], tmp[j+5], tmp[j+6], tmp[j+7]);
1476                 }
1477
1478 }
1479 */
1480                 break;
1481         default:
1482                 sbp_show_sdev_info(ocb->sdev, 2);
1483                 kprintf("sbp_scsi_status: unknown scsi status 0x%x\n",
1484                                                 sbp_cmd_status->status);
1485         }
1486 }
1487
1488 static void
1489 sbp_fix_inq_data(struct sbp_ocb *ocb)
1490 {
1491         union ccb *ccb;
1492         struct sbp_dev *sdev;
1493         struct scsi_inquiry_data *inq;
1494
1495         ccb = ocb->ccb;
1496         sdev = ocb->sdev;
1497
1498         if (ccb->csio.cdb_io.cdb_bytes[1] & SI_EVPD)
1499                 return;
1500 SBP_DEBUG(1)
1501         sbp_show_sdev_info(sdev, 2);
1502         kprintf("sbp_fix_inq_data\n");
1503 END_DEBUG
1504         inq = (struct scsi_inquiry_data *) ccb->csio.data_ptr;
1505         switch (SID_TYPE(inq)) {
1506         case T_DIRECT:
1507 #if 0
1508                 /* 
1509                  * XXX Convert Direct Access device to RBC.
1510                  * I've never seen FireWire DA devices which support READ_6.
1511                  */
1512                 if (SID_TYPE(inq) == T_DIRECT)
1513                         inq->device |= T_RBC; /*  T_DIRECT == 0 */
1514 #endif
1515                 /* fall through */
1516         case T_RBC:
1517                 /* enable tagged queuing */
1518                 if (sbp_tags)
1519                         inq->flags |= SID_CmdQue;
1520                 else
1521                         inq->flags &= ~SID_CmdQue;
1522                 /*
1523                  * Override vendor/product/revision information.
1524                  * Some devices sometimes return strange strings.
1525                  */
1526 #if 1
1527                 bcopy(sdev->vendor, inq->vendor, sizeof(inq->vendor));
1528                 bcopy(sdev->product, inq->product, sizeof(inq->product));
1529                 bcopy(sdev->revision+2, inq->revision, sizeof(inq->revision));
1530 #endif
1531                 break;
1532         }
1533 }
1534
1535 static void
1536 sbp_recv1(struct fw_xfer *xfer)
1537 {
1538         struct fw_pkt *rfp;
1539 #if NEED_RESPONSE
1540         struct fw_pkt *sfp;
1541 #endif
1542         struct sbp_softc *sbp;
1543         struct sbp_dev *sdev;
1544         struct sbp_ocb *ocb;
1545         struct sbp_login_res *login_res = NULL;
1546         struct sbp_status *sbp_status;
1547         struct sbp_target *target;
1548         int     orb_fun, status_valid0, status_valid, t, l, reset_agent = 0;
1549         u_int32_t addr;
1550 /*
1551         u_int32_t *ld;
1552         ld = xfer->recv.buf;
1553 kprintf("sbp %x %d %d %08x %08x %08x %08x\n",
1554                         xfer->resp, xfer->recv.len, xfer->recv.off, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
1555 kprintf("sbp %08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
1556 kprintf("sbp %08x %08x %08x %08x\n", ntohl(ld[8]), ntohl(ld[9]), ntohl(ld[10]), ntohl(ld[11]));
1557 */
1558         sbp = (struct sbp_softc *)xfer->sc;
1559         if (xfer->resp != 0){
1560                 kprintf("sbp_recv: xfer->resp = %d\n", xfer->resp);
1561                 goto done0;
1562         }
1563         if (xfer->recv.payload == NULL){
1564                 kprintf("sbp_recv: xfer->recv.payload == NULL\n");
1565                 goto done0;
1566         }
1567         rfp = &xfer->recv.hdr;
1568         if(rfp->mode.wreqb.tcode != FWTCODE_WREQB){
1569                 kprintf("sbp_recv: tcode = %d\n", rfp->mode.wreqb.tcode);
1570                 goto done0;
1571         }
1572         sbp_status = (struct sbp_status *)xfer->recv.payload;
1573         addr = rfp->mode.wreqb.dest_lo;
1574 SBP_DEBUG(2)
1575         kprintf("received address 0x%x\n", addr);
1576 END_DEBUG
1577         t = SBP_ADDR2TRG(addr);
1578         if (t >= SBP_NUM_TARGETS) {
1579                 device_printf(sbp->fd.dev,
1580                         "sbp_recv1: invalid target %d\n", t);
1581                 goto done0;
1582         }
1583         target = &sbp->targets[t];
1584         l = SBP_ADDR2LUN(addr);
1585         if (l >= target->num_lun || target->luns[l] == NULL) {
1586                 device_printf(sbp->fd.dev,
1587                         "sbp_recv1: invalid lun %d (target=%d)\n", l, t);
1588                 goto done0;
1589         }
1590         sdev = target->luns[l];
1591
1592         ocb = NULL;
1593         switch (sbp_status->src) {
1594         case 0:
1595         case 1:
1596                 /* check mgm_ocb_cur first */
1597                 ocb  = target->mgm_ocb_cur;
1598                 if (ocb != NULL) {
1599                         if (OCB_MATCH(ocb, sbp_status)) {
1600                                 callout_stop(&target->mgm_ocb_timeout);
1601                                 target->mgm_ocb_cur = NULL;
1602                                 break;
1603                         }
1604                 }
1605                 ocb = sbp_dequeue_ocb(sdev, sbp_status);
1606                 if (ocb == NULL) {
1607                         sbp_show_sdev_info(sdev, 2);
1608                         kprintf("No ocb(%x) on the queue\n",
1609                                         ntohl(sbp_status->orb_lo));
1610                 }
1611                 break;
1612         case 2:
1613                 /* unsolicit */
1614                 sbp_show_sdev_info(sdev, 2);
1615                 kprintf("unsolicit status received\n");
1616                 break;
1617         default:
1618                 sbp_show_sdev_info(sdev, 2);
1619                 kprintf("unknown sbp_status->src\n");
1620         }
1621
1622         status_valid0 = (sbp_status->src < 2
1623                         && sbp_status->resp == ORB_RES_CMPL
1624                         && sbp_status->dead == 0);
1625         status_valid = (status_valid0 && sbp_status->status == 0);
1626
1627         if (!status_valid0 || debug > 2){
1628                 int status;
1629 SBP_DEBUG(0)
1630                 sbp_show_sdev_info(sdev, 2);
1631                 kprintf("ORB status src:%x resp:%x dead:%x"
1632                                 " len:%x stat:%x orb:%x%08x\n",
1633                         sbp_status->src, sbp_status->resp, sbp_status->dead,
1634                         sbp_status->len, sbp_status->status,
1635                         ntohs(sbp_status->orb_hi), ntohl(sbp_status->orb_lo));
1636 END_DEBUG
1637                 sbp_show_sdev_info(sdev, 2);
1638                 status = sbp_status->status;
1639                 switch(sbp_status->resp) {
1640                 case 0:
1641                         if (status > MAX_ORB_STATUS0)
1642                                 kprintf("%s\n", orb_status0[MAX_ORB_STATUS0]);
1643                         else
1644                                 kprintf("%s\n", orb_status0[status]);
1645                         break;
1646                 case 1:
1647                         kprintf("Obj: %s, Error: %s\n",
1648                                 orb_status1_object[(status>>6) & 3],
1649                                 orb_status1_serial_bus_error[status & 0xf]);
1650                         break;
1651                 case 2:
1652                         kprintf("Illegal request\n");
1653                         break;
1654                 case 3:
1655                         kprintf("Vendor dependent\n");
1656                         break;
1657                 default:
1658                         kprintf("unknown respose code %d\n", sbp_status->resp);
1659                 }
1660         }
1661
1662         /* we have to reset the fetch agent if it's dead */
1663         if (sbp_status->dead) {
1664                 if (sdev->path) {
1665                         xpt_freeze_devq(sdev->path, 1);
1666                         sdev->freeze ++;
1667                 }
1668                 reset_agent = 1;
1669         }
1670
1671         if (ocb == NULL)
1672                 goto done;
1673
1674         switch(ntohl(ocb->orb[4]) & ORB_FMT_MSK){
1675         case ORB_FMT_NOP:
1676                 break;
1677         case ORB_FMT_VED:
1678                 break;
1679         case ORB_FMT_STD:
1680                 switch(ocb->flags) {
1681                 case OCB_ACT_MGM:
1682                         orb_fun = ntohl(ocb->orb[4]) & ORB_FUN_MSK;
1683                         reset_agent = 0;
1684                         switch(orb_fun) {
1685                         case ORB_FUN_LGI:
1686                                 fwdma_sync(&sdev->dma, BUS_DMASYNC_POSTREAD);
1687                                 login_res = sdev->login;
1688                                 login_res->len = ntohs(login_res->len);
1689                                 login_res->id = ntohs(login_res->id);
1690                                 login_res->cmd_hi = ntohs(login_res->cmd_hi);
1691                                 login_res->cmd_lo = ntohl(login_res->cmd_lo);
1692                                 if (status_valid) {
1693 SBP_DEBUG(0)
1694 sbp_show_sdev_info(sdev, 2);
1695 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));
1696 END_DEBUG
1697                                         sbp_busy_timeout(sdev);
1698                                 } else {
1699                                         /* forgot logout? */
1700                                         sbp_show_sdev_info(sdev, 2);
1701                                         kprintf("login failed\n");
1702                                         sdev->status = SBP_DEV_RESET;
1703                                 }
1704                                 break;
1705                         case ORB_FUN_RCN:
1706                                 login_res = sdev->login;
1707                                 if (status_valid) {
1708 SBP_DEBUG(0)
1709 sbp_show_sdev_info(sdev, 2);
1710 kprintf("reconnect: len %d, ID %d, cmd %08x%08x\n", login_res->len, login_res->id, login_res->cmd_hi, login_res->cmd_lo);
1711 END_DEBUG
1712 #if 1
1713                                         if (sdev->status == SBP_DEV_ATTACHED)
1714                                                 sbp_scan_dev(sdev);
1715                                         else
1716                                                 sbp_agent_reset(sdev);
1717 #else
1718                                         sdev->status = SBP_DEV_ATTACHED;
1719                                         sbp_mgm_orb(sdev, ORB_FUN_ATS, NULL);
1720 #endif
1721                                 } else {
1722                                         /* reconnection hold time exceed? */
1723 SBP_DEBUG(0)
1724                                         sbp_show_sdev_info(sdev, 2);
1725                                         kprintf("reconnect failed\n");
1726 END_DEBUG
1727                                         sbp_login(sdev);
1728                                 }
1729                                 break;
1730                         case ORB_FUN_LGO:
1731                                 sdev->status = SBP_DEV_RESET;
1732                                 break;
1733                         case ORB_FUN_RST:
1734                                 sbp_busy_timeout(sdev);
1735                                 break;
1736                         case ORB_FUN_LUR:
1737                         case ORB_FUN_ATA:
1738                         case ORB_FUN_ATS:
1739                                 sbp_agent_reset(sdev);
1740                                 break;
1741                         default:
1742                                 sbp_show_sdev_info(sdev, 2);
1743                                 kprintf("unknown function %d\n", orb_fun);
1744                                 break;
1745                         }
1746                         sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
1747                         break;
1748                 case OCB_ACT_CMD:
1749                         sdev->timeout = 0;
1750                         if(ocb->ccb != NULL){
1751                                 union ccb *ccb;
1752 /*
1753                                 u_int32_t *ld;
1754                                 ld = ocb->ccb->csio.data_ptr;
1755                                 if(ld != NULL && ocb->ccb->csio.dxfer_len != 0)
1756                                         kprintf("ptr %08x %08x %08x %08x\n", ld[0], ld[1], ld[2], ld[3]);
1757                                 else
1758                                         kprintf("ptr NULL\n");
1759 kprintf("len %d\n", sbp_status->len);
1760 */
1761                                 ccb = ocb->ccb;
1762                                 if(sbp_status->len > 1){
1763                                         sbp_scsi_status(sbp_status, ocb);
1764                                 }else{
1765                                         if(sbp_status->resp != ORB_RES_CMPL){
1766                                                 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
1767                                         }else{
1768                                                 ccb->ccb_h.status = CAM_REQ_CMP;
1769                                         }
1770                                 }
1771                                 /* fix up inq data */
1772                                 if (ccb->csio.cdb_io.cdb_bytes[0] == INQUIRY)
1773                                         sbp_fix_inq_data(ocb);
1774                                 xpt_done(ccb);
1775                         }
1776                         break;
1777                 default:
1778                         break;
1779                 }
1780         }
1781
1782         sbp_free_ocb(sdev, ocb);
1783 done:
1784         if (reset_agent)
1785                 sbp_agent_reset(sdev);
1786
1787 done0:
1788         xfer->recv.pay_len = SBP_RECV_LEN;
1789 /* The received packet is usually small enough to be stored within
1790  * the buffer. In that case, the controller return ack_complete and
1791  * no respose is necessary.
1792  *
1793  * XXX fwohci.c and firewire.c should inform event_code such as 
1794  * ack_complete or ack_pending to upper driver.
1795  */
1796 #if NEED_RESPONSE
1797         xfer->send.off = 0;
1798         sfp = (struct fw_pkt *)xfer->send.buf;
1799         sfp->mode.wres.dst = rfp->mode.wreqb.src;
1800         xfer->dst = sfp->mode.wres.dst;
1801         xfer->spd = min(sdev->target->fwdev->speed, max_speed);
1802         xfer->act.hand = sbp_loginres_callback;
1803         xfer->retry_req = fw_asybusy;
1804
1805         sfp->mode.wres.tlrt = rfp->mode.wreqb.tlrt;
1806         sfp->mode.wres.tcode = FWTCODE_WRES;
1807         sfp->mode.wres.rtcode = 0;
1808         sfp->mode.wres.pri = 0;
1809
1810         fw_asyreq(xfer->fc, -1, xfer);
1811 #else
1812         /* recycle */
1813         STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
1814 #endif
1815
1816         return;
1817
1818 }
1819
1820 static void
1821 sbp_recv(struct fw_xfer *xfer)
1822 {
1823         crit_enter();
1824         sbp_recv1(xfer);
1825         crit_exit();
1826 }
1827 /*
1828  * sbp_attach()
1829  */
1830 static int
1831 sbp_attach(device_t dev)
1832 {
1833         struct sbp_softc *sbp;
1834         struct cam_devq *devq;
1835         struct fw_xfer *xfer;
1836         int i, error;
1837
1838 SBP_DEBUG(0)
1839         kprintf("sbp_attach (cold=%d)\n", cold);
1840 END_DEBUG
1841
1842 #if 0
1843         if (cold)
1844                 sbp_cold ++;
1845 #endif
1846         sbp = ((struct sbp_softc *)device_get_softc(dev));
1847         bzero(sbp, sizeof(struct sbp_softc));
1848         sbp->fd.dev = dev;
1849         sbp->fd.fc = device_get_ivars(dev);
1850
1851         if (max_speed < 0)
1852                 max_speed = sbp->fd.fc->speed;
1853
1854         error = bus_dma_tag_create(/*parent*/sbp->fd.fc->dmat,
1855                                 /* XXX shoud be 4 for sane backend? */
1856                                 /*alignment*/1,
1857                                 /*boundary*/0,
1858                                 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
1859                                 /*highaddr*/BUS_SPACE_MAXADDR,
1860                                 /*filter*/NULL, /*filterarg*/NULL,
1861                                 /*maxsize*/0x100000, /*nsegments*/SBP_IND_MAX,
1862                                 /*maxsegsz*/SBP_SEG_MAX,
1863                                 /*flags*/BUS_DMA_ALLOCNOW,
1864 #if defined(__FreeBSD__) && __FreeBSD_version >= 501102
1865                                 /*lockfunc*/busdma_lock_mutex,
1866                                 /*lockarg*/&Giant,
1867 #endif
1868                                 &sbp->dmat);
1869         if (error != 0) {
1870                 kprintf("sbp_attach: Could not allocate DMA tag "
1871                         "- error %d\n", error);
1872                         return (ENOMEM);
1873         }
1874
1875         devq = cam_simq_alloc(/*maxopenings*/SBP_NUM_OCB);
1876         if (devq == NULL)
1877                 return (ENXIO);
1878
1879         for( i = 0 ; i < SBP_NUM_TARGETS ; i++){
1880                 sbp->targets[i].fwdev = NULL;
1881                 sbp->targets[i].luns = NULL;
1882         }
1883
1884         sbp->sim = cam_sim_alloc(sbp_action, sbp_poll, "sbp", sbp,
1885                                  device_get_unit(dev),
1886                                  &sim_mplock,
1887                                  /*untagged*/ 1,
1888                                  /*tagged*/ SBP_QUEUE_LEN - 1,
1889                                  devq);
1890         cam_simq_release(devq);
1891         if (sbp->sim == NULL)
1892                 return (ENXIO);
1893
1894         if (xpt_bus_register(sbp->sim, /*bus*/0) != CAM_SUCCESS)
1895                 goto fail;
1896
1897         if (xpt_create_path(&sbp->path, xpt_periph, cam_sim_path(sbp->sim),
1898             CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1899                 xpt_bus_deregister(cam_sim_path(sbp->sim));
1900                 goto fail;
1901         }
1902
1903         /* We reserve 16 bit space (4 bytes X 64 targets X 256 luns) */
1904         sbp->fwb.start = ((u_int64_t)SBP_BIND_HI << 32) | SBP_DEV2ADDR(0, 0);
1905         sbp->fwb.end = sbp->fwb.start + 0xffff;
1906         sbp->fwb.act_type = FWACT_XFER;
1907         /* pre-allocate xfer */
1908         STAILQ_INIT(&sbp->fwb.xferlist);
1909         for (i = 0; i < SBP_NUM_OCB/2; i ++) {
1910                 xfer = fw_xfer_alloc_buf(M_SBP,
1911                         /* send */0,
1912                         /* recv */SBP_RECV_LEN);
1913                 xfer->act.hand = sbp_recv;
1914 #if NEED_RESPONSE
1915                 xfer->fc = sbp->fd.fc;
1916 #endif
1917                 xfer->sc = (caddr_t)sbp;
1918                 STAILQ_INSERT_TAIL(&sbp->fwb.xferlist, xfer, link);
1919         }
1920         fw_bindadd(sbp->fd.fc, &sbp->fwb);
1921
1922         sbp->fd.post_busreset = sbp_post_busreset;
1923         sbp->fd.post_explore = sbp_post_explore;
1924
1925         if (sbp->fd.fc->status != -1) {
1926                 crit_enter();
1927                 sbp_post_busreset((void *)sbp);
1928                 sbp_post_explore((void *)sbp);
1929                 crit_exit();
1930         }
1931         xpt_async(AC_BUS_RESET, sbp->path, /*arg*/ NULL);
1932
1933         return (0);
1934 fail:
1935         cam_sim_free(sbp->sim);
1936         return (ENXIO);
1937 }
1938
1939 static int
1940 sbp_logout_all(struct sbp_softc *sbp)
1941 {
1942         struct sbp_target *target;
1943         struct sbp_dev *sdev;
1944         int i, j;
1945
1946 SBP_DEBUG(0)
1947         kprintf("sbp_logout_all\n");
1948 END_DEBUG
1949         for (i = 0 ; i < SBP_NUM_TARGETS ; i ++) {
1950                 target = &sbp->targets[i];
1951                 if (target->luns == NULL)
1952                         continue;
1953                 for (j = 0; j < target->num_lun; j++) {
1954                         sdev = target->luns[j];
1955                         if (sdev == NULL)
1956                                 continue;
1957                         callout_stop(&sdev->login_callout);
1958                         if (sdev->status >= SBP_DEV_TOATTACH &&
1959                                         sdev->status <= SBP_DEV_ATTACHED)
1960                                 sbp_mgm_orb(sdev, ORB_FUN_LGO, NULL);
1961                 }
1962         }
1963
1964         return 0;
1965 }
1966
1967 static int
1968 sbp_shutdown(device_t dev)
1969 {
1970         struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
1971
1972         sbp_logout_all(sbp);
1973         return (0);
1974 }
1975
1976 static void
1977 sbp_free_sdev(struct sbp_dev *sdev)
1978 {
1979         int i;
1980
1981         if (sdev == NULL)
1982                 return;
1983         for (i = 0; i < SBP_QUEUE_LEN; i++)
1984                 bus_dmamap_destroy(sdev->target->sbp->dmat,
1985                     sdev->ocb[i].dmamap);
1986         fwdma_free(sdev->target->sbp->fd.fc, &sdev->dma);
1987         kfree(sdev, M_SBP);
1988 }
1989
1990 static void
1991 sbp_free_target(struct sbp_target *target)
1992 {
1993         struct fw_xfer *xfer, *next;
1994         int i;
1995
1996         if (target->luns == NULL)
1997                 return;
1998         callout_stop(&target->mgm_ocb_timeout);
1999         for (i = 0; i < target->num_lun; i++)
2000                 sbp_free_sdev(target->luns[i]);
2001
2002         for (xfer = STAILQ_FIRST(&target->xferlist);
2003                         xfer != NULL; xfer = next) {
2004                 next = STAILQ_NEXT(xfer, link);
2005                 fw_xfer_free_buf(xfer);
2006         }
2007         STAILQ_INIT(&target->xferlist);
2008         kfree(target->luns, M_SBP);
2009         target->num_lun = 0;
2010         target->luns = NULL;
2011         target->fwdev = NULL;
2012 }
2013
2014 static int
2015 sbp_detach(device_t dev)
2016 {
2017         struct sbp_softc *sbp = ((struct sbp_softc *)device_get_softc(dev));
2018         struct firewire_comm *fc = sbp->fd.fc;
2019         struct fw_xfer *xfer, *next;
2020         int i;
2021
2022 SBP_DEBUG(0)
2023         kprintf("sbp_detach\n");
2024 END_DEBUG
2025
2026         for (i = 0; i < SBP_NUM_TARGETS; i ++) 
2027                 sbp_cam_detach_target(&sbp->targets[i]);
2028         xpt_async(AC_LOST_DEVICE, sbp->path, NULL);
2029         xpt_free_path(sbp->path);
2030         xpt_bus_deregister(cam_sim_path(sbp->sim));
2031         cam_sim_free(sbp->sim);
2032
2033         sbp_logout_all(sbp);
2034
2035         /* XXX wait for logout completion */
2036         tsleep(&i, FWPRI, "sbpdtc", hz/2);
2037
2038         for (i = 0 ; i < SBP_NUM_TARGETS ; i ++)
2039                 sbp_free_target(&sbp->targets[i]);
2040
2041         for (xfer = STAILQ_FIRST(&sbp->fwb.xferlist);
2042                                 xfer != NULL; xfer = next) {
2043                 next = STAILQ_NEXT(xfer, link);
2044                 fw_xfer_free_buf(xfer);
2045         }
2046         STAILQ_INIT(&sbp->fwb.xferlist);
2047         fw_bindremove(fc, &sbp->fwb);
2048
2049         bus_dma_tag_destroy(sbp->dmat);
2050
2051         return (0);
2052 }
2053
2054 static void
2055 sbp_cam_detach_sdev(struct sbp_dev *sdev)
2056 {
2057         if (sdev == NULL)
2058                 return;
2059         if (sdev->status == SBP_DEV_DEAD)
2060                 return;
2061         if (sdev->status == SBP_DEV_RESET)
2062                 return;
2063         if (sdev->path) {
2064                 xpt_release_devq(sdev->path,
2065                                  sdev->freeze, TRUE);
2066                 sdev->freeze = 0;
2067                 xpt_async(AC_LOST_DEVICE, sdev->path, NULL);
2068                 xpt_free_path(sdev->path);
2069                 sdev->path = NULL;
2070         }
2071         sbp_abort_all_ocbs(sdev, CAM_DEV_NOT_THERE);
2072 }
2073
2074 static void
2075 sbp_cam_detach_target(struct sbp_target *target)
2076 {
2077         int i;
2078
2079         if (target->luns != NULL) {
2080 SBP_DEBUG(0)
2081                 kprintf("sbp_detach_target %d\n", target->target_id);
2082 END_DEBUG
2083                 callout_stop(&target->scan_callout);
2084                 for (i = 0; i < target->num_lun; i++)
2085                         sbp_cam_detach_sdev(target->luns[i]);
2086         }
2087 }
2088
2089 static void
2090 sbp_target_reset(struct sbp_dev *sdev, int method)
2091 {
2092         int i;
2093         struct sbp_target *target = sdev->target;
2094         struct sbp_dev *tsdev;
2095
2096         for (i = 0; i < target->num_lun; i++) {
2097                 tsdev = target->luns[i];
2098                 if (tsdev == NULL)
2099                         continue;
2100                 if (tsdev->status == SBP_DEV_DEAD)
2101                         continue;
2102                 if (tsdev->status == SBP_DEV_RESET)
2103                         continue;
2104                 xpt_freeze_devq(tsdev->path, 1);
2105                 tsdev->freeze ++;
2106                 sbp_abort_all_ocbs(tsdev, CAM_CMD_TIMEOUT);
2107                 if (method == 2)
2108                         tsdev->status = SBP_DEV_LOGIN;
2109         }
2110         switch(method) {
2111         case 1:
2112                 kprintf("target reset\n");
2113                 sbp_mgm_orb(sdev, ORB_FUN_RST, NULL);
2114                 break;
2115         case 2:
2116                 kprintf("reset start\n");
2117                 sbp_reset_start(sdev);
2118                 break;
2119         }
2120                         
2121 }
2122
2123 static void
2124 sbp_mgm_timeout(void *arg)
2125 {
2126         struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2127         struct sbp_dev *sdev = ocb->sdev;
2128         struct sbp_target *target = sdev->target;
2129
2130         sbp_show_sdev_info(sdev, 2);
2131         kprintf("request timeout(mgm orb:0x%08x) ... ",
2132             (u_int32_t)ocb->bus_addr);
2133         target->mgm_ocb_cur = NULL;
2134         sbp_free_ocb(sdev, ocb);
2135 #if 0
2136         /* XXX */
2137         kprintf("run next request\n");
2138         sbp_mgm_orb(sdev, ORB_FUN_RUNQUEUE, NULL);
2139 #endif
2140 #if 1
2141         kprintf("reset start\n");
2142         sbp_reset_start(sdev);
2143 #endif
2144 }
2145
2146 static void
2147 sbp_timeout(void *arg)
2148 {
2149         struct sbp_ocb *ocb = (struct sbp_ocb *)arg;
2150         struct sbp_dev *sdev = ocb->sdev;
2151
2152         sbp_show_sdev_info(sdev, 2);
2153         kprintf("request timeout(cmd orb:0x%08x) ... ",
2154             (u_int32_t)ocb->bus_addr);
2155
2156         sdev->timeout ++;
2157         switch(sdev->timeout) {
2158         case 1:
2159                 kprintf("agent reset\n");
2160                 xpt_freeze_devq(sdev->path, 1);
2161                 sdev->freeze ++;
2162                 sbp_abort_all_ocbs(sdev, CAM_CMD_TIMEOUT);
2163                 sbp_agent_reset(sdev);
2164                 break;
2165         case 2:
2166         case 3:
2167                 sbp_target_reset(sdev, sdev->timeout - 1);
2168                 break;
2169 #if 0
2170         default:
2171                 /* XXX give up */
2172                 sbp_cam_detach_target(target);
2173                 if (target->luns != NULL)
2174                         kfree(target->luns, M_SBP);
2175                 target->num_lun = 0;
2176                 target->luns = NULL;
2177                 target->fwdev = NULL;
2178 #endif
2179         }
2180 }
2181
2182 static void
2183 sbp_action1(struct cam_sim *sim, union ccb *ccb)
2184 {
2185
2186         struct sbp_softc *sbp = (struct sbp_softc *)sim->softc;
2187         struct sbp_target *target = NULL;
2188         struct sbp_dev *sdev = NULL;
2189
2190         /* target:lun -> sdev mapping */
2191         if (sbp != NULL
2192                         && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD
2193                         && ccb->ccb_h.target_id < SBP_NUM_TARGETS) {
2194                 target = &sbp->targets[ccb->ccb_h.target_id];
2195                 if (target->fwdev != NULL
2196                                 && ccb->ccb_h.target_lun != CAM_LUN_WILDCARD
2197                                 && ccb->ccb_h.target_lun < target->num_lun) {
2198                         sdev = target->luns[ccb->ccb_h.target_lun];
2199                         if (sdev != NULL && sdev->status != SBP_DEV_ATTACHED &&
2200                                 sdev->status != SBP_DEV_PROBE)
2201                                 sdev = NULL;
2202                 }
2203         }
2204
2205 SBP_DEBUG(1)
2206         if (sdev == NULL)
2207                 kprintf("invalid target %d lun %d\n",
2208                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2209 END_DEBUG
2210
2211         switch (ccb->ccb_h.func_code) {
2212         case XPT_SCSI_IO:
2213         case XPT_RESET_DEV:
2214         case XPT_GET_TRAN_SETTINGS:
2215         case XPT_SET_TRAN_SETTINGS:
2216         case XPT_CALC_GEOMETRY:
2217                 if (sdev == NULL) {
2218 SBP_DEBUG(1)
2219                         kprintf("%s:%d:%d:func_code 0x%04x: "
2220                                 "Invalid target (target needed)\n",
2221                                 device_get_nameunit(sbp->fd.dev),
2222                                 ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2223                                 ccb->ccb_h.func_code);
2224 END_DEBUG
2225
2226                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2227                         xpt_done(ccb);
2228                         return;
2229                 }
2230                 break;
2231         case XPT_PATH_INQ:
2232         case XPT_NOOP:
2233                 /* The opcodes sometimes aimed at a target (sc is valid),
2234                  * sometimes aimed at the SIM (sc is invalid and target is
2235                  * CAM_TARGET_WILDCARD)
2236                  */
2237                 if (sbp == NULL && 
2238                         ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
2239 SBP_DEBUG(0)
2240                         kprintf("%s:%d:%d func_code 0x%04x: "
2241                                 "Invalid target (no wildcard)\n",
2242                                 device_get_nameunit(sbp->fd.dev),
2243                                 ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2244                                 ccb->ccb_h.func_code);
2245 END_DEBUG
2246                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2247                         xpt_done(ccb);
2248                         return;
2249                 }
2250                 break;
2251         default:
2252                 /* XXX Hm, we should check the input parameters */
2253                 break;
2254         }
2255
2256         switch (ccb->ccb_h.func_code) {
2257         case XPT_SCSI_IO:
2258         {
2259                 struct ccb_scsiio *csio;
2260                 struct sbp_ocb *ocb;
2261                 int speed;
2262                 void *cdb;
2263
2264                 csio = &ccb->csio;
2265
2266 SBP_DEBUG(2)
2267                 kprintf("%s:%d:%d XPT_SCSI_IO: "
2268                         "cmd: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x"
2269                         ", flags: 0x%02x, "
2270                         "%db cmd/%db data/%db sense\n",
2271                         device_get_nameunit(sbp->fd.dev),
2272                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2273                         csio->cdb_io.cdb_bytes[0],
2274                         csio->cdb_io.cdb_bytes[1],
2275                         csio->cdb_io.cdb_bytes[2],
2276                         csio->cdb_io.cdb_bytes[3],
2277                         csio->cdb_io.cdb_bytes[4],
2278                         csio->cdb_io.cdb_bytes[5],
2279                         csio->cdb_io.cdb_bytes[6],
2280                         csio->cdb_io.cdb_bytes[7],
2281                         csio->cdb_io.cdb_bytes[8],
2282                         csio->cdb_io.cdb_bytes[9],
2283                         ccb->ccb_h.flags & CAM_DIR_MASK,
2284                         csio->cdb_len, csio->dxfer_len,
2285                         csio->sense_len);
2286 END_DEBUG
2287                 if(sdev == NULL){
2288                         ccb->ccb_h.status = CAM_DEV_NOT_THERE;
2289                         xpt_done(ccb);
2290                         return;
2291                 }
2292 #if 0
2293                 /* if we are in probe stage, pass only probe commands */
2294                 if (sdev->status == SBP_DEV_PROBE) {
2295                         char *name;
2296                         name = xpt_path_periph(ccb->ccb_h.path)->periph_name;
2297                         kprintf("probe stage, periph name: %s\n", name);
2298                         if (strcmp(name, "probe") != 0) {
2299                                 ccb->ccb_h.status = CAM_REQUEUE_REQ;
2300                                 xpt_done(ccb);
2301                                 return;
2302                         }
2303                 }
2304 #endif
2305                 if ((ocb = sbp_get_ocb(sdev)) == NULL) {
2306                         ccb->ccb_h.status = CAM_REQUEUE_REQ;
2307                         xpt_done(ccb);
2308                         return;
2309                 }
2310
2311                 ocb->flags = OCB_ACT_CMD;
2312                 ocb->sdev = sdev;
2313                 ocb->ccb = ccb;
2314                 ccb->ccb_h.ccb_sdev_ptr = sdev;
2315                 ocb->orb[0] = htonl(1 << 31);
2316                 ocb->orb[1] = 0;
2317                 ocb->orb[2] = htonl(((sbp->fd.fc->nodeid | FWLOCALBUS )<< 16) );
2318                 ocb->orb[3] = htonl(ocb->bus_addr + IND_PTR_OFFSET);
2319                 speed = min(target->fwdev->speed, max_speed);
2320                 ocb->orb[4] = htonl(ORB_NOTIFY | ORB_CMD_SPD(speed)
2321                                                 | ORB_CMD_MAXP(speed + 7));
2322                 if((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN){
2323                         ocb->orb[4] |= htonl(ORB_CMD_IN);
2324                 }
2325
2326                 if (csio->ccb_h.flags & CAM_SCATTER_VALID)
2327                         kprintf("sbp: CAM_SCATTER_VALID\n");
2328                 if (csio->ccb_h.flags & CAM_DATA_PHYS)
2329                         kprintf("sbp: CAM_DATA_PHYS\n");
2330
2331                 if (csio->ccb_h.flags & CAM_CDB_POINTER)
2332                         cdb = (void *)csio->cdb_io.cdb_ptr;
2333                 else
2334                         cdb = (void *)&csio->cdb_io.cdb_bytes;
2335                 bcopy(cdb, (void *)&ocb->orb[5], csio->cdb_len);
2336 /*
2337 kprintf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[0]), ntohl(ocb->orb[1]), ntohl(ocb->orb[2]), ntohl(ocb->orb[3]));
2338 kprintf("ORB %08x %08x %08x %08x\n", ntohl(ocb->orb[4]), ntohl(ocb->orb[5]), ntohl(ocb->orb[6]), ntohl(ocb->orb[7]));
2339 */
2340                 if (ccb->csio.dxfer_len > 0) {
2341                         int error;
2342
2343                         crit_enter();
2344                         error = bus_dmamap_load(/*dma tag*/sbp->dmat,
2345                                         /*dma map*/ocb->dmamap,
2346                                         ccb->csio.data_ptr,
2347                                         ccb->csio.dxfer_len,
2348                                         sbp_execute_ocb,
2349                                         ocb,
2350                                         /*flags*/0);
2351                         crit_exit();
2352                         if (error)
2353                                 kprintf("sbp: bus_dmamap_load error %d\n", error);
2354                 } else
2355                         sbp_execute_ocb(ocb, NULL, 0, 0);
2356                 break;
2357         }
2358         case XPT_CALC_GEOMETRY:
2359         {
2360                 struct ccb_calc_geometry *ccg;
2361 #if defined(__DragonFly__) || __FreeBSD_version < 501100
2362                 u_int32_t size_mb;
2363                 u_int32_t secs_per_cylinder;
2364                 int extended = 1;
2365 #endif
2366
2367                 ccg = &ccb->ccg;
2368                 if (ccg->block_size == 0) {
2369                         kprintf("sbp_action1: block_size is 0.\n");
2370                         ccb->ccb_h.status = CAM_REQ_INVALID;
2371                         xpt_done(ccb);
2372                         break;
2373                 }
2374 SBP_DEBUG(1)
2375                 kprintf("%s:%d:%d:%d:XPT_CALC_GEOMETRY: Volume size = %ju\n",
2376                         device_get_nameunit(sbp->fd.dev),
2377                         cam_sim_path(sbp->sim),
2378                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun,
2379                         (uintmax_t)ccg->volume_size);
2380 END_DEBUG
2381
2382 #if defined(__DragonFly__) || __FreeBSD_version < 501100
2383                 size_mb = ccg->volume_size
2384                         / ((1024L * 1024L) / ccg->block_size);
2385
2386                 if (size_mb > 1024 && extended) {
2387                         ccg->heads = 255;
2388                         ccg->secs_per_track = 63;
2389                 } else {
2390                         ccg->heads = 64;
2391                         ccg->secs_per_track = 32;
2392                 }
2393                 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2394                 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2395                 ccb->ccb_h.status = CAM_REQ_CMP;
2396 #else
2397                 cam_calc_geometry(ccg, /*extended*/1);
2398 #endif
2399                 xpt_done(ccb);
2400                 break;
2401         }
2402         case XPT_RESET_BUS:             /* Reset the specified SCSI bus */
2403         {
2404
2405 SBP_DEBUG(1)
2406                 kprintf("%s:%d:XPT_RESET_BUS: \n",
2407                         device_get_nameunit(sbp->fd.dev), cam_sim_path(sbp->sim));
2408 END_DEBUG
2409
2410                 ccb->ccb_h.status = CAM_REQ_INVALID;
2411                 xpt_done(ccb);
2412                 break;
2413         }
2414         case XPT_PATH_INQ:              /* Path routing inquiry */
2415         {
2416                 struct ccb_pathinq *cpi = &ccb->cpi;
2417                 
2418 SBP_DEBUG(1)
2419                 kprintf("%s:%d:%d XPT_PATH_INQ:.\n",
2420                         device_get_nameunit(sbp->fd.dev),
2421                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2422 END_DEBUG
2423                 cpi->version_num = 1; /* XXX??? */
2424                 cpi->hba_inquiry = PI_TAG_ABLE;
2425                 cpi->target_sprt = 0;
2426                 cpi->hba_misc = PIM_NOBUSRESET | PIM_NO_6_BYTE;
2427                 cpi->hba_eng_cnt = 0;
2428                 cpi->max_target = SBP_NUM_TARGETS - 1;
2429                 cpi->max_lun = SBP_NUM_LUNS - 1;
2430                 cpi->initiator_id = SBP_INITIATOR;
2431                 cpi->bus_id = sim->bus_id;
2432                 cpi->base_transfer_speed = 400 * 1000 / 8;
2433                 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2434                 strncpy(cpi->hba_vid, "SBP", HBA_IDLEN);
2435                 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
2436                 cpi->unit_number = sim->unit_number;
2437                 cpi->transport = XPORT_SPI;     /* XX should have a FireWire */
2438                 cpi->transport_version = 2;
2439                 cpi->protocol = PROTO_SCSI;
2440                 cpi->protocol_version = SCSI_REV_2;
2441
2442                 cpi->ccb_h.status = CAM_REQ_CMP;
2443                 xpt_done(ccb);
2444                 break;
2445         }
2446         case XPT_GET_TRAN_SETTINGS:
2447         {
2448                 struct ccb_trans_settings *cts = &ccb->cts;
2449                 struct ccb_trans_settings_scsi *scsi =
2450                     &cts->proto_specific.scsi;
2451                 struct ccb_trans_settings_spi *spi =
2452                     &cts->xport_specific.spi;
2453
2454                 cts->protocol = PROTO_SCSI;
2455                 cts->protocol_version = SCSI_REV_2;
2456                 cts->transport = XPORT_SPI;     /* should have a FireWire */
2457                 cts->transport_version = 2;
2458                 spi->valid = CTS_SPI_VALID_DISC;
2459                 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
2460                 scsi->valid = CTS_SCSI_VALID_TQ;
2461                 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
2462 SBP_DEBUG(1)
2463                 kprintf("%s:%d:%d XPT_GET_TRAN_SETTINGS:.\n",
2464                         device_get_nameunit(sbp->fd.dev),
2465                         ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2466 END_DEBUG
2467                 cts->ccb_h.status = CAM_REQ_CMP;
2468                 xpt_done(ccb);
2469                 break;
2470         }
2471         case XPT_ABORT:
2472                 ccb->ccb_h.status = CAM_UA_ABORT;
2473                 xpt_done(ccb);
2474                 break;
2475         case XPT_SET_TRAN_SETTINGS:
2476                 /* XXX */
2477         default:
2478                 ccb->ccb_h.status = CAM_REQ_INVALID;
2479                 xpt_done(ccb);
2480                 break;
2481         }
2482         return;
2483 }
2484
2485 static void
2486 sbp_action(struct cam_sim *sim, union ccb *ccb)
2487 {
2488         crit_enter();
2489         sbp_action1(sim, ccb);
2490         crit_exit();
2491 }
2492
2493 static void
2494 sbp_execute_ocb(void *arg,  bus_dma_segment_t *segments, int seg, int error)
2495 {
2496         int i;
2497         struct sbp_ocb *ocb;
2498         struct sbp_ocb *prev;
2499         bus_dma_segment_t *s;
2500
2501         if (error)
2502                 kprintf("sbp_execute_ocb: error=%d\n", error);
2503
2504         ocb = (struct sbp_ocb *)arg;
2505
2506 SBP_DEBUG(2)
2507         kprintf("sbp_execute_ocb: seg %d", seg);
2508         for (i = 0; i < seg; i++)
2509                 kprintf(", %jx:%jd", (uintmax_t)segments[i].ds_addr,
2510                                         (uintmax_t)segments[i].ds_len);
2511         kprintf("\n");
2512 END_DEBUG
2513
2514         if (seg == 1) {
2515                 /* direct pointer */
2516                 s = &segments[0];
2517                 if (s->ds_len > SBP_SEG_MAX)
2518                         panic("ds_len > SBP_SEG_MAX, fix busdma code");
2519                 ocb->orb[3] = htonl(s->ds_addr);
2520                 ocb->orb[4] |= htonl(s->ds_len);
2521         } else if(seg > 1) {
2522                 /* page table */
2523                 for (i = 0; i < seg; i++) {
2524                         s = &segments[i];
2525 SBP_DEBUG(0)
2526                         /* XXX LSI Logic "< 16 byte" bug might be hit */
2527                         if (s->ds_len < 16)
2528                                 kprintf("sbp_execute_ocb: warning, "
2529                                         "segment length(%zd) is less than 16."
2530                                         "(seg=%d/%jd)\n",
2531                                         (size_t)s->ds_len, i+1, (intmax_t)seg);
2532 END_DEBUG
2533                         if (s->ds_len > SBP_SEG_MAX)
2534                                 panic("ds_len > SBP_SEG_MAX, fix busdma code");
2535                         ocb->ind_ptr[i].hi = htonl(s->ds_len << 16);
2536                         ocb->ind_ptr[i].lo = htonl(s->ds_addr);
2537                 }
2538                 ocb->orb[4] |= htonl(ORB_CMD_PTBL | seg);
2539         }
2540         
2541         if (seg > 0)
2542                 bus_dmamap_sync(ocb->sdev->target->sbp->dmat, ocb->dmamap,
2543                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2544                         BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE);
2545         prev = sbp_enqueue_ocb(ocb->sdev, ocb);
2546         fwdma_sync(&ocb->sdev->dma, BUS_DMASYNC_PREWRITE);
2547         if (prev == NULL || (ocb->sdev->flags & ORB_LINK_DEAD) != 0) {
2548                 ocb->sdev->flags &= ~ORB_LINK_DEAD;
2549                 sbp_orb_pointer(ocb->sdev, ocb); 
2550         }
2551 }
2552
2553 static void
2554 sbp_poll(struct cam_sim *sim)
2555 {       
2556         struct sbp_softc *sbp;
2557         struct firewire_comm *fc;
2558
2559         sbp = (struct sbp_softc *)sim->softc;
2560         fc = sbp->fd.fc;
2561
2562         fc->poll(fc, 0, -1);
2563
2564         return;
2565 }
2566
2567 static struct sbp_ocb *
2568 sbp_dequeue_ocb(struct sbp_dev *sdev, struct sbp_status *sbp_status)
2569 {
2570         struct sbp_ocb *ocb;
2571         struct sbp_ocb *next;
2572         int order = 0;
2573
2574         crit_enter();
2575
2576 SBP_DEBUG(1)
2577         sbp_show_sdev_info(sdev, 2);
2578         kprintf("%s: 0x%08x src %d\n",
2579             __func__, ntohl(sbp_status->orb_lo), sbp_status->src);
2580 END_DEBUG
2581         for (ocb = STAILQ_FIRST(&sdev->ocbs); ocb != NULL; ocb = next) {
2582                 next = STAILQ_NEXT(ocb, ocb);
2583                 if (OCB_MATCH(ocb, sbp_status)) {
2584                         /* found */
2585                         STAILQ_REMOVE(&sdev->ocbs, ocb, sbp_ocb, ocb);
2586                         if (ocb->ccb != NULL)
2587                                 callout_stop(&ocb->ccb->ccb_h.timeout_ch);
2588                         if (ntohl(ocb->orb[4]) & 0xffff) {
2589                                 bus_dmamap_sync(sdev->target->sbp->dmat,
2590                                         ocb->dmamap,
2591                                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2592                                         BUS_DMASYNC_POSTREAD :
2593                                         BUS_DMASYNC_POSTWRITE);
2594                                 bus_dmamap_unload(sdev->target->sbp->dmat,
2595                                         ocb->dmamap);
2596                         }
2597                         if (sbp_status->src == SRC_NO_NEXT) {
2598                                 if (next != NULL)
2599                                         sbp_orb_pointer(sdev, next); 
2600                                 else if (order > 0) {
2601                                         /*
2602                                          * Unordered execution
2603                                          * We need to send pointer for
2604                                          * next ORB
2605                                          */
2606                                         sdev->flags |= ORB_LINK_DEAD;
2607                                 }
2608                         }
2609                         break;
2610                 } else
2611                         order ++;
2612         }
2613         crit_exit();
2614 SBP_DEBUG(0)
2615         if (ocb && order > 0) {
2616                 sbp_show_sdev_info(sdev, 2);
2617                 kprintf("unordered execution order:%d\n", order);
2618         }
2619 END_DEBUG
2620         return (ocb);
2621 }
2622
2623 static struct sbp_ocb *
2624 sbp_enqueue_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2625 {
2626         struct sbp_ocb *prev;
2627
2628         crit_enter();
2629
2630 SBP_DEBUG(1)
2631         sbp_show_sdev_info(sdev, 2);
2632         kprintf("%s: 0x%08jx\n", __func__, (uintmax_t)ocb->bus_addr);
2633 END_DEBUG
2634         prev = STAILQ_LAST(&sdev->ocbs, sbp_ocb, ocb);
2635         STAILQ_INSERT_TAIL(&sdev->ocbs, ocb, ocb);
2636
2637         if (ocb->ccb != NULL)
2638                 callout_reset(&ocb->ccb->ccb_h.timeout_ch,
2639                     (ocb->ccb->ccb_h.timeout * hz) / 1000, sbp_timeout, ocb);
2640
2641         if (prev != NULL) {
2642 SBP_DEBUG(2)
2643                 kprintf("linking chain 0x%jx -> 0x%jx\n",
2644                     (uintmax_t)prev->bus_addr, (uintmax_t)ocb->bus_addr);
2645 END_DEBUG
2646                 prev->orb[1] = htonl(ocb->bus_addr);
2647                 prev->orb[0] = 0;
2648         }
2649         crit_exit();
2650
2651         return prev;
2652 }
2653
2654 static struct sbp_ocb *
2655 sbp_get_ocb(struct sbp_dev *sdev)
2656 {
2657         struct sbp_ocb *ocb;
2658
2659         crit_enter();
2660         ocb = STAILQ_FIRST(&sdev->free_ocbs);
2661         if (ocb == NULL) {
2662                 kprintf("ocb shortage!!!\n");
2663                 crit_exit();
2664                 return NULL;
2665         }
2666         STAILQ_REMOVE_HEAD(&sdev->free_ocbs, ocb);
2667         crit_exit();
2668         ocb->ccb = NULL;
2669         return (ocb);
2670 }
2671
2672 static void
2673 sbp_free_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
2674 {
2675         ocb->flags = 0;
2676         ocb->ccb = NULL;
2677         STAILQ_INSERT_TAIL(&sdev->free_ocbs, ocb, ocb);
2678 }
2679
2680 static void
2681 sbp_abort_ocb(struct sbp_ocb *ocb, int status)
2682 {
2683         struct sbp_dev *sdev;
2684
2685         sdev = ocb->sdev;
2686 SBP_DEBUG(0)
2687         sbp_show_sdev_info(sdev, 2);
2688         kprintf("sbp_abort_ocb 0x%jx\n", (uintmax_t)ocb->bus_addr);
2689 END_DEBUG
2690 SBP_DEBUG(1)
2691         if (ocb->ccb != NULL)
2692                 sbp_print_scsi_cmd(ocb);
2693 END_DEBUG
2694         if (ntohl(ocb->orb[4]) & 0xffff) {
2695                 bus_dmamap_sync(sdev->target->sbp->dmat, ocb->dmamap,
2696                         (ntohl(ocb->orb[4]) & ORB_CMD_IN) ?
2697                         BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
2698                 bus_dmamap_unload(sdev->target->sbp->dmat, ocb->dmamap);
2699         }
2700         if (ocb->ccb != NULL) {
2701                 callout_stop(&ocb->ccb->ccb_h.timeout_ch);
2702                 ocb->ccb->ccb_h.status = status;
2703                 xpt_done(ocb->ccb);
2704         }
2705         sbp_free_ocb(sdev, ocb);
2706 }
2707
2708 static void
2709 sbp_abort_all_ocbs(struct sbp_dev *sdev, int status)
2710 {
2711         struct sbp_ocb *ocb, *next;
2712         STAILQ_HEAD(, sbp_ocb) temp;
2713
2714         crit_enter();
2715         STAILQ_INIT(&temp);
2716         STAILQ_CONCAT(&temp, &sdev->ocbs);
2717         for (ocb = STAILQ_FIRST(&temp); ocb != NULL; ocb = next) {
2718                 next = STAILQ_NEXT(ocb, ocb);
2719                 sbp_abort_ocb(ocb, status);
2720         }
2721         crit_exit();
2722 }
2723
2724 static devclass_t sbp_devclass;
2725
2726 /*
2727  * Because sbp is a static device that always exists under any attached
2728  * firewire device, and not scanned by the firewire device, we need an 
2729  * identify function to install the device.  For our sanity we want
2730  * the sbp device to have the same unit number as the fireweire device.
2731  */
2732
2733 static device_method_t sbp_methods[] = {
2734         /* device interface */
2735         DEVMETHOD(device_identify,      bus_generic_identify_sameunit),
2736         DEVMETHOD(device_probe,         sbp_probe),
2737         DEVMETHOD(device_attach,        sbp_attach),
2738         DEVMETHOD(device_detach,        sbp_detach),
2739         DEVMETHOD(device_shutdown,      sbp_shutdown),
2740
2741         { 0, 0 }
2742 };
2743
2744 static driver_t sbp_driver = {
2745         "sbp",
2746         sbp_methods,
2747         sizeof(struct sbp_softc),
2748 };
2749
2750 DECLARE_DUMMY_MODULE(sbp);
2751 DRIVER_MODULE(sbp, firewire, sbp_driver, sbp_devclass, NULL, NULL);
2752 MODULE_VERSION(sbp, 1);
2753 MODULE_DEPEND(sbp, firewire, 1, 1, 1);
2754 MODULE_DEPEND(sbp, cam, 1, 1, 1);