1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
|
/*
* Copyright (c) 2002 Adaptec, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* CAM front-end for communicating with non-DASD devices
*/
#include "opt_aac.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_debug.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#include <dev/aac/aac_compat.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/devicestat.h>
#include <sys/disk.h>
#include <machine/md_var.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <dev/aac/aacreg.h>
#include <dev/aac/aac_ioctl.h>
#include <dev/aac/aacvar.h>
#include <dev/aac/aac_cam.h>
struct aac_cam {
device_t dev;
struct aac_cam_inf *inf;
struct cam_sim *sim;
struct cam_path *path;
};
static int aac_cam_probe(device_t dev);
static int aac_cam_attach(device_t dev);
static int aac_cam_detach(device_t dev);
static void aac_cam_action(struct cam_sim *, union ccb *);
static void aac_cam_poll(struct cam_sim *);
static void aac_cam_complete(struct aac_command *);
static u_int32_t aac_cam_reset_bus(struct cam_sim *, union ccb *);
static u_int32_t aac_cam_abort_ccb(struct cam_sim *, union ccb *);
static u_int32_t aac_cam_term_io(struct cam_sim *, union ccb *);
static int aac_cam_get_tran_settings(struct aac_softc *, struct ccb_trans_settings *, u_int32_t);
static devclass_t aac_pass_devclass;
static device_method_t aac_pass_methods[] = {
DEVMETHOD(device_probe, aac_cam_probe),
DEVMETHOD(device_attach, aac_cam_attach),
DEVMETHOD(device_detach, aac_cam_detach),
{ 0, 0 }
};
static driver_t aac_pass_driver = {
"aacp",
aac_pass_methods,
sizeof(struct aac_cam)
};
DRIVER_MODULE(aacp, aac, aac_pass_driver, aac_pass_devclass, 0, 0);
MODULE_DEPEND(aacp, cam, 1, 1, 1);
MALLOC_DEFINE(M_AACCAM, "aaccam", "AAC CAM info");
static int
aac_cam_probe(device_t dev)
{
debug_called(2);
return (0);
}
static int
aac_cam_detach(device_t dev)
{
return (0);
}
/*
* Register the driver as a CAM SIM
*/
static int
aac_cam_attach(device_t dev)
{
struct cam_devq *devq;
struct cam_sim *sim;
struct cam_path *path;
struct aac_cam *camsc;
struct aac_cam_inf *inf;
debug_called(1);
camsc = (struct aac_cam *)device_get_softc(dev);
inf = (struct aac_cam_inf *)device_get_ivars(dev);
camsc->inf = inf;
devq = cam_simq_alloc(inf->TargetsPerBus);
if (devq == NULL)
return (EIO);
sim = cam_sim_alloc(aac_cam_action, aac_cam_poll, "aacp", camsc,
device_get_unit(dev), 1, 1, devq);
if (sim == NULL) {
cam_simq_free(devq);
return (EIO);
}
/* Since every bus has it's own sim, every bus 'appears' as bus 0 */
if (xpt_bus_register(sim, 0) != CAM_SUCCESS) {
cam_sim_free(sim, TRUE);
return (EIO);
}
if (xpt_create_path(&path, NULL, cam_sim_path(sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sim));
cam_sim_free(sim, TRUE);
return (EIO);
}
camsc->sim = sim;
camsc->path = path;
return (0);
}
static void
aac_cam_action(struct cam_sim *sim, union ccb *ccb)
{
struct aac_cam *camsc;
struct aac_softc *sc;
struct aac_srb32 *srb;
struct aac_fib *fib;
struct aac_command *cm;
debug_called(2);
camsc = (struct aac_cam *)cam_sim_softc(sim);
sc = camsc->inf->aac_sc;
/* Synchronous ops, and ops that don't require communication with the
* controller */
switch(ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
case XPT_RESET_DEV:
/* These are handled down below */
break;
case XPT_CALC_GEOMETRY:
{
struct ccb_calc_geometry *ccg;
u_int32_t size_mb;
u_int32_t secs_per_cylinder;
ccg = &ccb->ccg;
size_mb = ccg->volume_size /
((1024L * 1024L) / ccg->block_size);
if (size_mb >= (2 * 1024)) { /* 2GB */
ccg->heads = 255;
ccg->secs_per_track = 63;
} else if (size_mb >= (1 * 1024)) { /* 1GB */
ccg->heads = 128;
ccg->secs_per_track = 32;
} else {
ccg->heads = 64;
ccg->secs_per_track = 32;
}
secs_per_cylinder = ccg->heads * ccg->secs_per_track;
ccg->cylinders = ccg->volume_size / secs_per_cylinder;
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return;
}
case XPT_PATH_INQ:
{
struct ccb_pathinq *cpi = &ccb->cpi;
cpi->version_num = 1;
cpi->hba_inquiry = PI_WIDE_16;
cpi->target_sprt = 0;
/* Resetting via the passthrough causes problems. */
cpi->hba_misc = PIM_NOBUSRESET;
cpi->hba_eng_cnt = 0;
cpi->max_target = camsc->inf->TargetsPerBus;
cpi->max_lun = 8; /* Per the controller spec */
cpi->initiator_id = camsc->inf->InitiatorBusId;
cpi->bus_id = camsc->inf->BusNumber;
cpi->base_transfer_speed = 3300;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
cpi->unit_number = cam_sim_unit(sim);
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return;
}
case XPT_GET_TRAN_SETTINGS:
{
u_int32_t handle;
handle = AAC_BTL_TO_HANDLE(camsc->inf->BusNumber,
ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
ccb->ccb_h.status = aac_cam_get_tran_settings(sc, &ccb->cts,
handle);
xpt_done(ccb);
return;
}
case XPT_SET_TRAN_SETTINGS:
ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
xpt_done(ccb);
return;
case XPT_RESET_BUS:
if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) {
ccb->ccb_h.status = aac_cam_reset_bus(sim, ccb);
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
}
xpt_done(ccb);
return;
case XPT_ABORT:
ccb->ccb_h.status = aac_cam_abort_ccb(sim, ccb);
xpt_done(ccb);
return;
case XPT_TERM_IO:
ccb->ccb_h.status = aac_cam_term_io(sim, ccb);
xpt_done(ccb);
return;
default:
device_printf(sc->aac_dev, "Unsupported command 0x%x\n",
ccb->ccb_h.func_code);
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
xpt_done(ccb);
return;
}
/* Async ops that require communcation with the controller */
if (aac_alloc_command(sc, &cm)) {
xpt_freeze_simq(sim, 1);
ccb->ccb_h.status = CAM_REQUEUE_REQ;
xpt_done(ccb);
return;
}
fib = cm->cm_fib;
srb = (struct aac_srb32 *)&fib->data[0];
cm->cm_datalen = 0;
switch (ccb->ccb_h.flags & CAM_DIR_MASK) {
case CAM_DIR_IN:
srb->flags = AAC_SRB_FLAGS_DATA_IN;
cm->cm_flags |= AAC_CMD_DATAIN;
break;
case CAM_DIR_OUT:
srb->flags = AAC_SRB_FLAGS_DATA_OUT;
cm->cm_flags |= AAC_CMD_DATAOUT;
break;
case CAM_DIR_NONE:
srb->flags = AAC_SRB_FLAGS_NO_DATA_XFER;
break;
default:
srb->flags = AAC_SRB_FLAGS_UNSPECIFIED_DIRECTION;
cm->cm_flags |= AAC_CMD_DATAIN | AAC_CMD_DATAOUT;
break;
}
switch(ccb->ccb_h.func_code) {
case XPT_SCSI_IO:
{
struct ccb_scsiio *csio = &ccb->csio;
srb->function = AAC_SRB_FUNC_EXECUTE_SCSI;
/*
* Copy the CDB into the SRB. It's only 6-16 bytes,
* so a copy is not too expensive.
*/
srb->cdb_len = csio->cdb_len;
if (ccb->ccb_h.flags & CAM_CDB_POINTER)
bcopy(csio->cdb_io.cdb_ptr, (u_int8_t *)&srb->cdb[0],
srb->cdb_len);
else
bcopy(csio->cdb_io.cdb_bytes, (u_int8_t *)&srb->cdb[0],
srb->cdb_len);
/* Map the s/g list. XXX 32bit addresses only! */
if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
srb->data_len = csio->dxfer_len;
if (ccb->ccb_h.flags & CAM_DATA_PHYS) {
srb->sg_map32.SgCount = 1;
srb->sg_map32.SgEntry[0].SgAddress =
(u_int32_t)csio->data_ptr;
srb->sg_map32.SgEntry[0].SgByteCount =
csio->dxfer_len;
} else {
/*
* Arrange things so that the S/G
* map will get set up automagically
*/
cm->cm_data = (void *)csio->data_ptr;
cm->cm_datalen = csio->dxfer_len;
cm->cm_sgtable = &srb->sg_map32;
}
} else {
/* XXX Need to handle multiple s/g elements */
panic("aac_cam: multiple s/g elements");
}
} else {
srb->sg_map32.SgCount = 0;
srb->sg_map32.SgEntry[0].SgByteCount = 0;
srb->data_len = 0;
}
break;
}
case XPT_RESET_DEV:
if (!(sc->quirks & AAC_QUIRK_CAM_NORESET)) {
srb->function = AAC_SRB_FUNC_RESET_DEVICE;
break;
} else {
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
return;
}
default:
break;
}
srb->bus = camsc->inf->BusNumber; /* Bus number relative to the card */
srb->target = ccb->ccb_h.target_id;
srb->lun = ccb->ccb_h.target_lun;
srb->timeout = ccb->ccb_h.timeout; /* XXX */
srb->retry_limit = 0;
cm->cm_complete = aac_cam_complete;
cm->cm_private = ccb;
cm->cm_timestamp = time_second;
cm->cm_queue = AAC_ADAP_NORM_CMD_QUEUE;
fib->Header.XferState =
AAC_FIBSTATE_HOSTOWNED |
AAC_FIBSTATE_INITIALISED |
AAC_FIBSTATE_FROMHOST |
AAC_FIBSTATE_REXPECTED |
AAC_FIBSTATE_NORM;
fib->Header.Command = ScsiPortCommand;
fib->Header.Size = sizeof(struct aac_fib_header) +
sizeof(struct aac_srb32);
aac_enqueue_ready(cm);
aac_startio(cm->cm_sc);
return;
}
static void
aac_cam_poll(struct cam_sim *sim)
{
/*
* Pinging the interrupt routine isn't very safe, nor is it
* really necessary. Do nothing.
*/
}
static void
aac_cam_complete(struct aac_command *cm)
{
union ccb *ccb;
struct aac_srb_response *srbr;
struct aac_softc *sc;
debug_called(2);
sc = cm->cm_sc;
ccb = cm->cm_private;
srbr = (struct aac_srb_response *)&cm->cm_fib->data[0];
if (srbr->fib_status != 0) {
device_printf(sc->aac_dev, "Passthru FIB failed!\n");
ccb->ccb_h.status = CAM_REQ_ABORTED;
} else {
/*
* The SRB error codes just happen to match the CAM error
* codes. How convienient!
*/
ccb->ccb_h.status = srbr->srb_status;
/* Take care of SCSI_IO ops. */
if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
u_int8_t command, device;
ccb->csio.scsi_status = srbr->scsi_status;
/* Take care of autosense */
if (srbr->sense_len) {
int sense_len, scsi_sense_len;
scsi_sense_len = sizeof(struct scsi_sense_data);
bzero(&ccb->csio.sense_data, scsi_sense_len);
sense_len = (srbr->sense_len >
scsi_sense_len) ? scsi_sense_len :
srbr->sense_len;
bcopy(&srbr->sense[0], &ccb->csio.sense_data,
srbr->sense_len);
ccb->csio.sense_len = sense_len;
ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
scsi_sense_print(&ccb->csio);
}
/* If this is an inquiry command, fake things out */
if (ccb->ccb_h.flags & CAM_CDB_POINTER)
command = ccb->csio.cdb_io.cdb_ptr[0];
else
command = ccb->csio.cdb_io.cdb_bytes[0];
if ((command == INQUIRY) &&
(ccb->ccb_h.status == CAM_REQ_CMP)) {
device = ccb->csio.data_ptr[0] & 0x1f;
/*
* We want DASD and PROC devices to only be
* visible through the pass device.
*/
if ((device == T_DIRECT) ||
(device == T_PROCESSOR) ||
(sc->quirks & AAC_QUIRK_CAM_PASSONLY))
ccb->csio.data_ptr[0] =
((device & 0xe0) | T_NODEVICE);
}
}
}
aac_release_command(cm);
xpt_done(ccb);
return;
}
static u_int32_t
aac_cam_reset_bus(struct cam_sim *sim, union ccb *ccb)
{
struct aac_fib *fib;
struct aac_softc *sc;
struct aac_cam *camsc;
struct aac_vmioctl *vmi;
struct aac_resetbus *rbc;
int e;
camsc = (struct aac_cam *)cam_sim_softc(sim);
sc = camsc->inf->aac_sc;
if (sc == NULL) {
printf("Null sc?\n");
return (CAM_REQ_ABORTED);
}
aac_alloc_sync_fib(sc, &fib, 0);
vmi = (struct aac_vmioctl *)&fib->data[0];
bzero(vmi, sizeof(struct aac_vmioctl));
vmi->Command = VM_Ioctl;
vmi->ObjType = FT_DRIVE;
vmi->MethId = sc->scsi_method_id;
vmi->ObjId = 0;
vmi->IoctlCmd = ResetBus;
rbc = (struct aac_resetbus *)&vmi->IoctlBuf[0];
rbc->BusNumber = camsc->inf->BusNumber;
e = aac_sync_fib(sc, ContainerCommand, 0, fib,
sizeof(struct aac_vmioctl));
if (e) {
device_printf(sc->aac_dev,"Error %d sending ResetBus command\n",
e);
aac_release_sync_fib(sc);
return (CAM_REQ_ABORTED);
}
aac_release_sync_fib(sc);
return (CAM_REQ_CMP);
}
static u_int32_t
aac_cam_abort_ccb(struct cam_sim *sim, union ccb *ccb)
{
return (CAM_UA_ABORT);
}
static u_int32_t
aac_cam_term_io(struct cam_sim *sim, union ccb *ccb)
{
return (CAM_UA_TERMIO);
}
static int
aac_cam_get_tran_settings(struct aac_softc *sc, struct ccb_trans_settings *cts, u_int32_t handle)
{
struct aac_fib *fib;
struct aac_vmioctl *vmi;
struct aac_vmi_devinfo_resp *vmi_resp;
int error;
aac_alloc_sync_fib(sc, &fib, 0);
vmi = (struct aac_vmioctl *)&fib->data[0];
bzero(vmi, sizeof(struct aac_vmioctl));
vmi->Command = VM_Ioctl;
vmi->ObjType = FT_DRIVE;
vmi->MethId = sc->scsi_method_id;
vmi->ObjId = handle;
vmi->IoctlCmd = GetDeviceProbeInfo;
error = aac_sync_fib(sc, ContainerCommand, 0, fib,
sizeof(struct aac_vmioctl));
if (error) {
device_printf(sc->aac_dev, "Error %d sending GetDeviceProbeInfo"
" command\n", error);
aac_release_sync_fib(sc);
return (CAM_REQ_INVALID);
}
vmi_resp = (struct aac_vmi_devinfo_resp *)&fib->data[0];
if (vmi_resp->Status != ST_OK) {
/*
* The only reason why this command will return an error is
* if the requested device doesn't exist.
*/
debug(1, "GetDeviceProbeInfo returned %d\n", vmi_resp->Status);
aac_release_sync_fib(sc);
return (CAM_DEV_NOT_THERE);
}
cts->bus_width = ((vmi_resp->Inquiry7 & 0x60) >> 5);
cts->valid = CCB_TRANS_BUS_WIDTH_VALID;
if (vmi_resp->ScsiRate) {
cts->sync_period =
scsi_calc_syncparam((10000 / vmi_resp->ScsiRate));
cts->sync_offset = vmi_resp->ScsiOffset;
cts->valid |= CCB_TRANS_SYNC_RATE_VALID |
CCB_TRANS_SYNC_OFFSET_VALID;
}
cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
cts->valid |= CCB_TRANS_DISC_VALID |
CCB_TRANS_TQ_VALID;
aac_release_sync_fib(sc);
return (CAM_REQ_CMP);
}
|