1/*
2 * Copyright (c) 2004-07 Applied Micro Circuits Corporation.
3 * Copyright (c) 2004-05 Vinod Kashyap.
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 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
|
27 * $FreeBSD: head/sys/dev/twa/tw_osl_cam.c 208969 2010-06-09 21:40:38Z delphij $
|
| 27 * $FreeBSD: head/sys/dev/twa/tw_osl_cam.c 212008 2010-08-30 19:15:04Z delphij $ |
28 */
29
30/*
31 * AMCC'S 3ware driver for 9000 series storage controllers.
32 *
33 * Author: Vinod Kashyap
34 * Modifications by: Adam Radford
35 * Modifications by: Manjunath Ranganathaiah
36 */
37
38
39/*
40 * FreeBSD CAM related functions.
41 */
42
43
44#include <dev/twa/tw_osl_includes.h>
45
46#include <cam/cam.h>
47#include <cam/cam_ccb.h>
48#include <cam/cam_sim.h>
49#include <cam/cam_xpt_sim.h>
50#include <cam/cam_debug.h>
51#include <cam/cam_periph.h>
52
53#include <cam/scsi/scsi_all.h>
54#include <cam/scsi/scsi_message.h>
55
56static TW_VOID twa_action(struct cam_sim *sim, union ccb *ccb);
57static TW_VOID twa_poll(struct cam_sim *sim);
|
58static TW_VOID twa_timeout(TW_VOID *arg);
|
58
59static TW_INT32 tw_osli_execute_scsi(struct tw_osli_req_context *req,
60 union ccb *ccb);
61
62
63
64/*
65 * Function name: tw_osli_cam_attach
66 * Description: Attaches the driver to CAM.
67 *
68 * Input: sc -- ptr to OSL internal ctlr context
69 * Output: None
70 * Return value: 0 -- success
71 * non-zero-- failure
72 */
73TW_INT32
74tw_osli_cam_attach(struct twa_softc *sc)
75{
76 struct cam_devq *devq;
77
78 tw_osli_dbg_dprintf(3, sc, "entered");
79
80 /*
81 * Create the device queue for our SIM.
82 */
|
84 if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_REQUESTS)) == NULL) {
|
| 83 if ((devq = cam_simq_alloc(TW_OSLI_MAX_NUM_IOS)) == NULL) { |
84 tw_osli_printf(sc, "error = %d",
85 TW_CL_SEVERITY_ERROR_STRING,
86 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
87 0x2100,
88 "Failed to create SIM device queue",
89 ENOMEM);
90 return(ENOMEM);
91 }
92
93 /*
94 * Create a SIM entry. Though we can support TW_OSLI_MAX_NUM_REQUESTS
95 * simultaneous requests, we claim to be able to handle only
96 * TW_OSLI_MAX_NUM_IOS (two less), so that we always have a request
97 * packet available to service ioctls and AENs.
98 */
99 tw_osli_dbg_dprintf(3, sc, "Calling cam_sim_alloc");
100 sc->sim = cam_sim_alloc(twa_action, twa_poll, "twa", sc,
101 device_get_unit(sc->bus_dev), sc->sim_lock,
102 TW_OSLI_MAX_NUM_IOS, 1, devq);
103 if (sc->sim == NULL) {
104 cam_simq_free(devq);
105 tw_osli_printf(sc, "error = %d",
106 TW_CL_SEVERITY_ERROR_STRING,
107 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
108 0x2101,
109 "Failed to create a SIM entry",
110 ENOMEM);
111 return(ENOMEM);
112 }
113
114 /*
115 * Register the bus.
116 */
117 tw_osli_dbg_dprintf(3, sc, "Calling xpt_bus_register");
118 mtx_lock(sc->sim_lock);
119 if (xpt_bus_register(sc->sim, sc->bus_dev, 0) != CAM_SUCCESS) {
120 cam_sim_free(sc->sim, TRUE);
121 sc->sim = NULL; /* so cam_detach will not try to free it */
122 tw_osli_printf(sc, "error = %d",
123 TW_CL_SEVERITY_ERROR_STRING,
124 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
125 0x2102,
126 "Failed to register the bus",
127 ENXIO);
128 mtx_unlock(sc->sim_lock);
129 return(ENXIO);
130 }
131
132 tw_osli_dbg_dprintf(3, sc, "Calling xpt_create_path");
133 if (xpt_create_path(&sc->path, NULL,
134 cam_sim_path(sc->sim),
135 CAM_TARGET_WILDCARD,
136 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
137 xpt_bus_deregister(cam_sim_path (sc->sim));
138 /* Passing TRUE to cam_sim_free will free the devq as well. */
139 cam_sim_free(sc->sim, TRUE);
140 tw_osli_printf(sc, "error = %d",
141 TW_CL_SEVERITY_ERROR_STRING,
142 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
143 0x2103,
144 "Failed to create path",
145 ENXIO);
146 mtx_unlock(sc->sim_lock);
147 return(ENXIO);
148 }
149 mtx_unlock(sc->sim_lock);
150
151 tw_osli_dbg_dprintf(3, sc, "exiting");
152 return(0);
153}
154
155
156
157/*
158 * Function name: tw_osli_cam_detach
159 * Description: Detaches the driver from CAM.
160 *
161 * Input: sc -- ptr to OSL internal ctlr context
162 * Output: None
163 * Return value: None
164 */
165TW_VOID
166tw_osli_cam_detach(struct twa_softc *sc)
167{
168 tw_osli_dbg_dprintf(3, sc, "entered");
169
170 mtx_lock(sc->sim_lock);
171
172 if (sc->path)
173 xpt_free_path(sc->path);
174 if (sc->sim) {
175 xpt_bus_deregister(cam_sim_path(sc->sim));
176 /* Passing TRUE to cam_sim_free will free the devq as well. */
177 cam_sim_free(sc->sim, TRUE);
178 }
179 /* It's ok have 1 hold count while destroying the mutex */
180 mtx_destroy(sc->sim_lock);
181}
182
183
184
185/*
186 * Function name: tw_osli_execute_scsi
187 * Description: Build a fw cmd, based on a CAM style ccb, and
188 * send it down.
189 *
190 * Input: req -- ptr to OSL internal request context
191 * ccb -- ptr to CAM style ccb
192 * Output: None
193 * Return value: 0 -- success
194 * non-zero-- failure
195 */
196TW_INT32
197tw_osli_execute_scsi(struct tw_osli_req_context *req, union ccb *ccb)
198{
199 struct twa_softc *sc = req->ctlr;
200 struct tw_cl_req_packet *req_pkt;
201 struct tw_cl_scsi_req_packet *scsi_req;
202 struct ccb_hdr *ccb_h = &(ccb->ccb_h);
203 struct ccb_scsiio *csio = &(ccb->csio);
204 TW_INT32 error;
205
206 tw_osli_dbg_dprintf(10, sc, "SCSI I/O request 0x%x",
207 csio->cdb_io.cdb_bytes[0]);
208
209 if (ccb_h->target_id >= TW_CL_MAX_NUM_UNITS) {
210 tw_osli_dbg_dprintf(3, sc, "Invalid target. PTL = %x %x %x",
211 ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun);
212 ccb_h->status |= CAM_TID_INVALID;
213 xpt_done(ccb);
214 return(1);
215 }
216 if (ccb_h->target_lun >= TW_CL_MAX_NUM_LUNS) {
217 tw_osli_dbg_dprintf(3, sc, "Invalid lun. PTL = %x %x %x",
218 ccb_h->path_id, ccb_h->target_id, ccb_h->target_lun);
219 ccb_h->status |= CAM_LUN_INVALID;
220 xpt_done(ccb);
221 return(1);
222 }
223
224 if(ccb_h->flags & CAM_CDB_PHYS) {
225 tw_osli_printf(sc, "",
226 TW_CL_SEVERITY_ERROR_STRING,
227 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
228 0x2105,
229 "Physical CDB address!");
230 ccb_h->status = CAM_REQ_INVALID;
231 xpt_done(ccb);
232 return(1);
233 }
234
235 /*
236 * We are going to work on this request. Mark it as enqueued (though
237 * we don't actually queue it...)
238 */
239 ccb_h->status |= CAM_SIM_QUEUED;
240
241 if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
242 if(ccb_h->flags & CAM_DIR_IN)
243 req->flags |= TW_OSLI_REQ_FLAGS_DATA_IN;
244 else
245 req->flags |= TW_OSLI_REQ_FLAGS_DATA_OUT;
246 }
247
248 /* Build the CL understood request packet for SCSI cmds. */
249 req_pkt = &req->req_pkt;
250 req_pkt->status = 0;
251 req_pkt->tw_osl_callback = tw_osl_complete_io;
252 scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
253 scsi_req->unit = ccb_h->target_id;
254 scsi_req->lun = ccb_h->target_lun;
255 scsi_req->sense_len = 0;
256 scsi_req->sense_data = (TW_UINT8 *)(&csio->sense_data);
257 scsi_req->scsi_status = 0;
258 if(ccb_h->flags & CAM_CDB_POINTER)
259 scsi_req->cdb = csio->cdb_io.cdb_ptr;
260 else
261 scsi_req->cdb = csio->cdb_io.cdb_bytes;
262 scsi_req->cdb_len = csio->cdb_len;
263
264 if (!(ccb_h->flags & CAM_DATA_PHYS)) {
265 /* Virtual data addresses. Need to convert them... */
266 tw_osli_dbg_dprintf(3, sc,
267 "XPT_SCSI_IO: Single virtual address!");
268 if (!(ccb_h->flags & CAM_SCATTER_VALID)) {
269 if (csio->dxfer_len > TW_CL_MAX_IO_SIZE) {
270 tw_osli_printf(sc, "size = %d",
271 TW_CL_SEVERITY_ERROR_STRING,
272 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
273 0x2106,
274 "I/O size too big",
275 csio->dxfer_len);
276 ccb_h->status = CAM_REQ_TOO_BIG;
|
| 277 ccb_h->status &= ~CAM_SIM_QUEUED; |
278 xpt_done(ccb);
279 return(1);
280 }
281
282 if ((req->length = csio->dxfer_len)) {
283 req->data = csio->data_ptr;
284 scsi_req->sgl_entries = 1;
285 }
286 } else {
287 tw_osli_printf(sc, "",
288 TW_CL_SEVERITY_ERROR_STRING,
289 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
290 0x2107,
291 "XPT_SCSI_IO: Got SGList");
292 ccb_h->status = CAM_REQ_INVALID;
|
| 293 ccb_h->status &= ~CAM_SIM_QUEUED; |
294 xpt_done(ccb);
295 return(1);
296 }
297 } else {
298 /* Data addresses are physical. */
299 tw_osli_printf(sc, "",
300 TW_CL_SEVERITY_ERROR_STRING,
301 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
302 0x2108,
303 "XPT_SCSI_IO: Physical data addresses");
304 ccb_h->status = CAM_REQ_INVALID;
305 ccb_h->status &= ~CAM_SIM_QUEUED;
306 xpt_done(ccb);
307 return(1);
308 }
309
|
309 ccb_h->timeout_ch = timeout(twa_timeout, req,
310 (ccb_h->timeout * hz) / 1000);
|
310 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000);
311
312 |
313 /*
314 * twa_map_load_data_callback will fill in the SGL,
315 * and submit the I/O.
316 */
317 error = tw_osli_map_request(req);
|
318 if ((error) && (req->flags & TW_OSLI_REQ_FLAGS_FAILED)) {
319 req->deadline = 0;
320 ccb_h->status = CAM_REQ_CMP_ERR;
321 ccb_h->status &= ~CAM_SIM_QUEUED;
322 xpt_done(ccb);
323 } |
324 return(error);
325}
326
327
328
329/*
330 * Function name: twa_action
331 * Description: Driver entry point for CAM's use.
332 *
333 * Input: sim -- sim corresponding to the ctlr
334 * ccb -- ptr to CAM request
335 * Output: None
336 * Return value: None
337 */
338TW_VOID
339twa_action(struct cam_sim *sim, union ccb *ccb)
340{
341 struct twa_softc *sc = (struct twa_softc *)cam_sim_softc(sim);
342 struct ccb_hdr *ccb_h = &(ccb->ccb_h);
343
344 switch (ccb_h->func_code) {
345 case XPT_SCSI_IO: /* SCSI I/O */
346 {
347 struct tw_osli_req_context *req;
348
349 req = tw_osli_get_request(sc);
350 if (req == NULL) {
351 tw_osli_dbg_dprintf(2, sc, "Cannot get request pkt.");
352 /*
353 * Freeze the simq to maintain ccb ordering. The next
354 * ccb that gets completed will unfreeze the simq.
355 */
|
| 356 ccb_h->status &= ~CAM_SIM_QUEUED; |
357 ccb_h->status |= CAM_REQUEUE_REQ;
358 xpt_done(ccb);
359 break;
360 }
|
361
362 if ((tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) {
363 ccb_h->status &= ~CAM_SIM_QUEUED;
364 ccb_h->status |= CAM_REQUEUE_REQ;
365 xpt_done(ccb);
366 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
367 break;
368 }
369 |
370 req->req_handle.osl_req_ctxt = req;
371 req->req_handle.is_io = TW_CL_TRUE;
372 req->orig_req = ccb;
373 if (tw_osli_execute_scsi(req, ccb))
374 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
375 break;
376 }
377
378 case XPT_ABORT:
379 tw_osli_dbg_dprintf(2, sc, "Abort request.");
380 ccb_h->status = CAM_UA_ABORT;
381 xpt_done(ccb);
382 break;
383
384 case XPT_RESET_BUS:
|
367 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_TRUE,
|
| 385 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_FALSE, |
386 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
387 0x2108, 0x3, TW_CL_SEVERITY_INFO_STRING,
388 "Received Reset Bus request from CAM",
389 " ");
390
|
373 mtx_unlock(sc->sim_lock);
374 if (tw_cl_reset_ctlr(&sc->ctlr_handle)) {
375 tw_cl_create_event(&(sc->ctlr_handle), TW_CL_TRUE,
376 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
377 0x2109, 0x1, TW_CL_SEVERITY_ERROR_STRING,
378 "Failed to reset bus",
379 " ");
380 ccb_h->status = CAM_REQ_CMP_ERR;
381 }
382 else
383 ccb_h->status = CAM_REQ_CMP;
384
385 mtx_lock(sc->sim_lock);
|
391 tw_cl_set_reset_needed(&(sc->ctlr_handle));
392 ccb_h->status = CAM_REQ_CMP; |
393 xpt_done(ccb);
394 break;
395
396 case XPT_SET_TRAN_SETTINGS:
397 tw_osli_dbg_dprintf(3, sc, "XPT_SET_TRAN_SETTINGS");
398
399 /*
400 * This command is not supported, since it's very specific
401 * to SCSI, and we are doing ATA.
402 */
403 ccb_h->status = CAM_FUNC_NOTAVAIL;
404 xpt_done(ccb);
405 break;
406
407 case XPT_GET_TRAN_SETTINGS:
408 {
409 struct ccb_trans_settings *cts = &ccb->cts;
410 struct ccb_trans_settings_scsi *scsi =
411 &cts->proto_specific.scsi;
412 struct ccb_trans_settings_spi *spi =
413 &cts->xport_specific.spi;
414
415 cts->protocol = PROTO_SCSI;
416 cts->protocol_version = SCSI_REV_2;
417 cts->transport = XPORT_SPI;
418 cts->transport_version = 2;
419
420 spi->valid = CTS_SPI_VALID_DISC;
421 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
422 scsi->valid = CTS_SCSI_VALID_TQ;
423 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
424 tw_osli_dbg_dprintf(3, sc, "XPT_GET_TRAN_SETTINGS");
425 ccb_h->status = CAM_REQ_CMP;
426 xpt_done(ccb);
427 break;
428 }
429
430 case XPT_CALC_GEOMETRY:
431 tw_osli_dbg_dprintf(3, sc, "XPT_CALC_GEOMETRY");
432 cam_calc_geometry(&ccb->ccg, 1/* extended */);
433 xpt_done(ccb);
434 break;
435
436 case XPT_PATH_INQ: /* Path inquiry -- get twa properties */
437 {
438 struct ccb_pathinq *path_inq = &ccb->cpi;
439
440 tw_osli_dbg_dprintf(3, sc, "XPT_PATH_INQ request");
441
442 path_inq->version_num = 1;
443 path_inq->hba_inquiry = 0;
444 path_inq->target_sprt = 0;
445 path_inq->hba_misc = 0;
446 path_inq->hba_eng_cnt = 0;
447 path_inq->max_target = TW_CL_MAX_NUM_UNITS;
448 path_inq->max_lun = TW_CL_MAX_NUM_LUNS - 1;
449 path_inq->unit_number = cam_sim_unit(sim);
450 path_inq->bus_id = cam_sim_bus(sim);
451 path_inq->initiator_id = TW_CL_MAX_NUM_UNITS;
452 path_inq->base_transfer_speed = 100000;
453 strncpy(path_inq->sim_vid, "FreeBSD", SIM_IDLEN);
454 strncpy(path_inq->hba_vid, "3ware", HBA_IDLEN);
455 strncpy(path_inq->dev_name, cam_sim_name(sim), DEV_IDLEN);
456 path_inq->transport = XPORT_SPI;
457 path_inq->transport_version = 2;
458 path_inq->protocol = PROTO_SCSI;
459 path_inq->protocol_version = SCSI_REV_2;
|
| 460 path_inq->maxio = TW_CL_MAX_IO_SIZE; |
461 ccb_h->status = CAM_REQ_CMP;
462 xpt_done(ccb);
463 break;
464 }
465
466 default:
467 tw_osli_dbg_dprintf(3, sc, "func_code = %x", ccb_h->func_code);
468 ccb_h->status = CAM_REQ_INVALID;
469 xpt_done(ccb);
470 break;
471 }
472}
473
474
475
476/*
477 * Function name: twa_poll
478 * Description: Driver entry point called when interrupts are not
479 * available.
480 *
481 * Input: sim -- sim corresponding to the controller
482 * Output: None
483 * Return value: None
484 */
485TW_VOID
486twa_poll(struct cam_sim *sim)
487{
488 struct twa_softc *sc = (struct twa_softc *)(cam_sim_softc(sim));
489
490 tw_osli_dbg_dprintf(3, sc, "entering; sc = %p", sc);
491 tw_cl_interrupt(&(sc->ctlr_handle));
492 tw_osli_dbg_dprintf(3, sc, "exiting; sc = %p", sc);
493}
494
495
496
497/*
|
490 * Function name: twa_timeout
491 * Description: Driver entry point for being alerted on a request
492 * timing out.
493 *
494 * Input: arg -- ptr to timed out request
495 * Output: None
496 * Return value: None
497 */
498static TW_VOID
499twa_timeout(TW_VOID *arg)
500{
501 struct tw_osli_req_context *req =
502 (struct tw_osli_req_context *)arg;
503
504 tw_cl_create_event(&(req->ctlr->ctlr_handle), TW_CL_TRUE,
505 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
506 0x210B, 0x1, TW_CL_SEVERITY_ERROR_STRING,
507 "Request timed out!",
508 "request = %p", req);
509 tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle));
510}
511
512
513
514/*
|
498 * Function name: tw_osli_request_bus_scan
499 * Description: Requests CAM for a scan of the bus.
500 *
501 * Input: sc -- ptr to per ctlr structure
502 * Output: None
503 * Return value: 0 -- success
504 * non-zero-- failure
505 */
506TW_INT32
507tw_osli_request_bus_scan(struct twa_softc *sc)
508{
509 union ccb *ccb;
510
511 tw_osli_dbg_dprintf(3, sc, "entering");
512
513 /* If we get here before sc->sim is initialized, return an error. */
514 if (!(sc->sim))
515 return(ENXIO);
516 if ((ccb = xpt_alloc_ccb()) == NULL)
517 return(ENOMEM);
518 mtx_lock(sc->sim_lock);
519 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, cam_sim_path(sc->sim),
520 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
521 xpt_free_ccb(ccb);
522 mtx_unlock(sc->sim_lock);
523 return(EIO);
524 }
525
526 xpt_rescan(ccb);
527 mtx_unlock(sc->sim_lock);
528 return(0);
529}
530
531
532
533/*
534 * Function name: tw_osli_disallow_new_requests
535 * Description: Calls the appropriate CAM function, so as to freeze
536 * the flow of new requests from CAM to this controller.
537 *
538 * Input: sc -- ptr to OSL internal ctlr context
539 * req_handle -- ptr to request handle sent by OSL.
540 * Output: None
541 * Return value: None
542 */
543TW_VOID
544tw_osli_disallow_new_requests(struct twa_softc *sc,
545 struct tw_cl_req_handle *req_handle)
546{
547 /* Only freeze/release the simq for IOs */
548 if (req_handle->is_io) {
549 struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
550 union ccb *ccb = (union ccb *)(req->orig_req);
551
552 xpt_freeze_simq(sc->sim, 1);
553 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
554 }
555}
556
557
558
559/*
|
577 * Function name: tw_osl_ctlr_busy
578 * Description: CL calls this function on cmd queue full or otherwise,
579 * when it is too busy to accept new requests.
|
560 * Function name: tw_osl_timeout
561 * Description: Call to timeout(). |
562 *
|
581 * Input: ctlr_handle -- ptr to controller handle
582 * req_handle -- ptr to request handle sent by OSL.
|
| 563 * Input: req_handle -- ptr to request handle sent by OSL. |
564 * Output: None
565 * Return value: None
566 */
567TW_VOID
|
587tw_osl_ctlr_busy(struct tw_cl_ctlr_handle *ctlr_handle,
588 struct tw_cl_req_handle *req_handle)
|
| 568tw_osl_timeout(struct tw_cl_req_handle *req_handle) |
569{
|
590 tw_osli_disallow_new_requests(ctlr_handle->osl_ctlr_ctxt, req_handle);
|
570 struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
571 union ccb *ccb = (union ccb *)(req->orig_req);
572 struct ccb_hdr *ccb_h = &(ccb->ccb_h);
573
574 req->deadline = tw_osl_get_local_time() + (ccb_h->timeout / 1000); |
575}
576
577
578
579/*
|
580 * Function name: tw_osl_untimeout
581 * Description: Inverse of call to timeout().
582 *
583 * Input: req_handle -- ptr to request handle sent by OSL.
584 * Output: None
585 * Return value: None
586 */
587TW_VOID
588tw_osl_untimeout(struct tw_cl_req_handle *req_handle)
589{
590 struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
591
592 req->deadline = 0;
593}
594
595
596
597/* |
598 * Function name: tw_osl_scan_bus
599 * Description: CL calls this function to request for a bus scan.
600 *
601 * Input: ctlr_handle -- ptr to controller handle
602 * Output: None
603 * Return value: None
604 */
605TW_VOID
606tw_osl_scan_bus(struct tw_cl_ctlr_handle *ctlr_handle)
607{
608 struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt;
609 TW_INT32 error;
610
611 if ((error = tw_osli_request_bus_scan(sc)))
612 tw_osli_printf(sc, "error = %d",
613 TW_CL_SEVERITY_ERROR_STRING,
614 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
615 0x2109,
616 "Bus scan request to CAM failed",
617 error);
618}
619
620
621
622/*
623 * Function name: tw_osl_complete_io
624 * Description: Called to complete CAM scsi requests.
625 *
626 * Input: req_handle -- ptr to request handle
627 * Output: None
628 * Return value: None
629 */
630TW_VOID
631tw_osl_complete_io(struct tw_cl_req_handle *req_handle)
632{
633 struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
634 struct tw_cl_req_packet *req_pkt =
635 (struct tw_cl_req_packet *)(&req->req_pkt);
636 struct tw_cl_scsi_req_packet *scsi_req;
637 struct twa_softc *sc = req->ctlr;
638 union ccb *ccb = (union ccb *)(req->orig_req);
639
640 tw_osli_dbg_dprintf(10, sc, "entering");
641
642 if (req->state != TW_OSLI_REQ_STATE_BUSY)
643 tw_osli_printf(sc, "request = %p, status = %d",
644 TW_CL_SEVERITY_ERROR_STRING,
645 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
646 0x210A,
647 "Unposted command completed!!",
648 req, req->state);
649
650 /*
651 * Remove request from the busy queue. Just mark it complete.
652 * There's no need to move it into the complete queue as we are
653 * going to be done with it right now.
654 */
655 req->state = TW_OSLI_REQ_STATE_COMPLETE;
656 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q);
657
658 tw_osli_unmap_request(req);
659
|
658 untimeout(twa_timeout, req, ccb->ccb_h.timeout_ch);
|
| 660 req->deadline = 0; |
661 if (req->error_code) {
662 /* This request never got submitted to the firmware. */
663 if (req->error_code == EBUSY) {
664 /*
665 * Cmd queue is full, or the Common Layer is out of
666 * resources. The simq will already have been frozen.
667 * When this ccb gets completed will unfreeze the simq.
668 */
669 ccb->ccb_h.status |= CAM_REQUEUE_REQ;
670 }
671 else if (req->error_code == EFBIG)
672 ccb->ccb_h.status = CAM_REQ_TOO_BIG;
673 else
674 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
675 } else {
676 scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
677 if (req_pkt->status == TW_CL_ERR_REQ_SUCCESS)
678 ccb->ccb_h.status = CAM_REQ_CMP;
679 else {
680 if (req_pkt->status & TW_CL_ERR_REQ_INVALID_TARGET)
681 ccb->ccb_h.status |= CAM_TID_INVALID;
682 else if (req_pkt->status & TW_CL_ERR_REQ_INVALID_LUN)
683 ccb->ccb_h.status |= CAM_LUN_INVALID;
684 else if (req_pkt->status & TW_CL_ERR_REQ_SCSI_ERROR)
685 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
686 else if (req_pkt->status & TW_CL_ERR_REQ_BUS_RESET)
|
685 ccb->ccb_h.status |= CAM_SCSI_BUS_RESET;
|
| 687 ccb->ccb_h.status |= (CAM_REQUEUE_REQ | CAM_SCSI_BUS_RESET); |
688 /*
689 * If none of the above errors occurred, simply
690 * mark completion error.
691 */
692 if (ccb->ccb_h.status == 0)
693 ccb->ccb_h.status = CAM_REQ_CMP_ERR;
694
695 if (req_pkt->status & TW_CL_ERR_REQ_AUTO_SENSE_VALID) {
696 ccb->csio.sense_len = scsi_req->sense_len;
697 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
698 }
699 }
700
701 ccb->csio.scsi_status = scsi_req->scsi_status;
702 }
703
704 ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
705 mtx_lock(sc->sim_lock);
706 xpt_done(ccb);
707 mtx_unlock(sc->sim_lock);
708 if (! req->error_code)
709 /* twa_action will free the request otherwise */
710 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
711}
712
|