tws_cam.c revision 331722
1/* 2 * Copyright (c) 2010 LSI Corp. 3 * All rights reserved. 4 * Author : Manjunath Ranganathaiah <manjunath.ranganathaiah@lsi.com> 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: stable/11/sys/dev/tws/tws_cam.c 331722 2018-03-29 02:50:57Z eadler $ 28 */ 29 30#include <dev/tws/tws.h> 31#include <dev/tws/tws_services.h> 32#include <dev/tws/tws_hdm.h> 33#include <dev/tws/tws_user.h> 34#include <cam/cam.h> 35#include <cam/cam_ccb.h> 36#include <cam/cam_sim.h> 37#include <cam/cam_xpt_sim.h> 38#include <cam/cam_debug.h> 39#include <cam/cam_periph.h> 40 41#include <cam/scsi/scsi_all.h> 42#include <cam/scsi/scsi_message.h> 43 44static int tws_cam_depth=(TWS_MAX_REQS - TWS_RESERVED_REQS); 45static char tws_sev_str[5][8]={"","ERROR","WARNING","INFO","DEBUG"}; 46 47static void tws_action(struct cam_sim *sim, union ccb *ccb); 48static void tws_poll(struct cam_sim *sim); 49static void tws_scsi_complete(struct tws_request *req); 50 51 52 53void tws_unmap_request(struct tws_softc *sc, struct tws_request *req); 54int32_t tws_map_request(struct tws_softc *sc, struct tws_request *req); 55int tws_bus_scan(struct tws_softc *sc); 56int tws_cam_attach(struct tws_softc *sc); 57void tws_cam_detach(struct tws_softc *sc); 58void tws_reset(void *arg); 59 60static void tws_reset_cb(void *arg); 61static void tws_reinit(void *arg); 62static int32_t tws_execute_scsi(struct tws_softc *sc, union ccb *ccb); 63static void tws_freeze_simq(struct tws_softc *sc, struct tws_request *req); 64static void tws_dmamap_data_load_cbfn(void *arg, bus_dma_segment_t *segs, 65 int nseg, int error); 66static void tws_fill_sg_list(struct tws_softc *sc, void *sgl_src, 67 void *sgl_dest, u_int16_t num_sgl_entries); 68static void tws_err_complete(struct tws_softc *sc, u_int64_t mfa); 69static void tws_scsi_err_complete(struct tws_request *req, 70 struct tws_command_header *hdr); 71static void tws_passthru_err_complete(struct tws_request *req, 72 struct tws_command_header *hdr); 73 74 75void tws_timeout(void *arg); 76static void tws_intr_attn_aen(struct tws_softc *sc); 77static void tws_intr_attn_error(struct tws_softc *sc); 78static void tws_intr_resp(struct tws_softc *sc); 79void tws_intr(void *arg); 80void tws_cmd_complete(struct tws_request *req); 81void tws_aen_complete(struct tws_request *req); 82int tws_send_scsi_cmd(struct tws_softc *sc, int cmd); 83void tws_getset_param_complete(struct tws_request *req); 84int tws_set_param(struct tws_softc *sc, u_int32_t table_id, u_int32_t param_id, 85 u_int32_t param_size, void *data); 86int tws_get_param(struct tws_softc *sc, u_int32_t table_id, u_int32_t param_id, 87 u_int32_t param_size, void *data); 88 89 90extern struct tws_request *tws_get_request(struct tws_softc *sc, 91 u_int16_t type); 92extern void *tws_release_request(struct tws_request *req); 93extern int tws_submit_command(struct tws_softc *sc, struct tws_request *req); 94extern boolean tws_get_response(struct tws_softc *sc, 95 u_int16_t *req_id, u_int64_t *mfa); 96extern void tws_q_insert_tail(struct tws_softc *sc, struct tws_request *req, 97 u_int8_t q_type ); 98extern struct tws_request * tws_q_remove_request(struct tws_softc *sc, 99 struct tws_request *req, u_int8_t q_type ); 100extern void tws_send_event(struct tws_softc *sc, u_int8_t event); 101 102extern struct tws_sense * 103tws_find_sense_from_mfa(struct tws_softc *sc, u_int64_t mfa); 104 105extern void tws_fetch_aen(void *arg); 106extern void tws_disable_db_intr(struct tws_softc *sc); 107extern void tws_enable_db_intr(struct tws_softc *sc); 108extern void tws_passthru_complete(struct tws_request *req); 109extern void tws_aen_synctime_with_host(struct tws_softc *sc); 110extern void tws_circular_aenq_insert(struct tws_softc *sc, 111 struct tws_circular_q *cq, struct tws_event_packet *aen); 112extern int tws_use_32bit_sgls; 113extern boolean tws_ctlr_reset(struct tws_softc *sc); 114extern struct tws_request * tws_q_remove_tail(struct tws_softc *sc, 115 u_int8_t q_type ); 116extern void tws_turn_off_interrupts(struct tws_softc *sc); 117extern void tws_turn_on_interrupts(struct tws_softc *sc); 118extern int tws_init_connect(struct tws_softc *sc, u_int16_t mc); 119extern void tws_init_obfl_q(struct tws_softc *sc); 120extern uint8_t tws_get_state(struct tws_softc *sc); 121extern void tws_assert_soft_reset(struct tws_softc *sc); 122extern boolean tws_ctlr_ready(struct tws_softc *sc); 123extern u_int16_t tws_poll4_response(struct tws_softc *sc, u_int64_t *mfa); 124extern int tws_setup_intr(struct tws_softc *sc, int irqs); 125extern int tws_teardown_intr(struct tws_softc *sc); 126 127 128 129int 130tws_cam_attach(struct tws_softc *sc) 131{ 132 struct cam_devq *devq; 133 134 TWS_TRACE_DEBUG(sc, "entry", 0, sc); 135 /* Create a device queue for sim */ 136 137 /* 138 * if the user sets cam depth to less than 1 139 * cam may get confused 140 */ 141 if ( tws_cam_depth < 1 ) 142 tws_cam_depth = 1; 143 if ( tws_cam_depth > (tws_queue_depth - TWS_RESERVED_REQS) ) 144 tws_cam_depth = tws_queue_depth - TWS_RESERVED_REQS; 145 146 TWS_TRACE_DEBUG(sc, "depths,ctlr,cam", tws_queue_depth, tws_cam_depth); 147 148 if ((devq = cam_simq_alloc(tws_cam_depth)) == NULL) { 149 tws_log(sc, CAM_SIMQ_ALLOC); 150 return(ENOMEM); 151 } 152 153 /* 154 * Create a SIM entry. Though we can support tws_cam_depth 155 * simultaneous requests, we claim to be able to handle only 156 * (tws_cam_depth), so that we always have reserved requests 157 * packet available to service ioctls and internal commands. 158 */ 159 sc->sim = cam_sim_alloc(tws_action, tws_poll, "tws", sc, 160 device_get_unit(sc->tws_dev), 161#if (__FreeBSD_version >= 700000) 162 &sc->sim_lock, 163#endif 164 tws_cam_depth, 1, devq); 165 /* 1, 1, devq); */ 166 if (sc->sim == NULL) { 167 cam_simq_free(devq); 168 tws_log(sc, CAM_SIM_ALLOC); 169 } 170 /* Register the bus. */ 171 mtx_lock(&sc->sim_lock); 172 if (xpt_bus_register(sc->sim, 173#if (__FreeBSD_version >= 700000) 174 sc->tws_dev, 175#endif 176 0) != CAM_SUCCESS) { 177 cam_sim_free(sc->sim, TRUE); /* passing true will free the devq */ 178 sc->sim = NULL; /* so cam_detach will not try to free it */ 179 mtx_unlock(&sc->sim_lock); 180 tws_log(sc, TWS_XPT_BUS_REGISTER); 181 return(ENXIO); 182 } 183 if (xpt_create_path(&sc->path, NULL, cam_sim_path(sc->sim), 184 CAM_TARGET_WILDCARD, 185 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 186 xpt_bus_deregister(cam_sim_path(sc->sim)); 187 /* Passing TRUE to cam_sim_free will free the devq as well. */ 188 cam_sim_free(sc->sim, TRUE); 189 tws_log(sc, TWS_XPT_CREATE_PATH); 190 mtx_unlock(&sc->sim_lock); 191 return(ENXIO); 192 } 193 mtx_unlock(&sc->sim_lock); 194 195 return(0); 196} 197 198void 199tws_cam_detach(struct tws_softc *sc) 200{ 201 TWS_TRACE_DEBUG(sc, "entry", 0, 0); 202 mtx_lock(&sc->sim_lock); 203 if (sc->path) 204 xpt_free_path(sc->path); 205 if (sc->sim) { 206 xpt_bus_deregister(cam_sim_path(sc->sim)); 207 cam_sim_free(sc->sim, TRUE); 208 } 209 mtx_unlock(&sc->sim_lock); 210} 211 212int 213tws_bus_scan(struct tws_softc *sc) 214{ 215 union ccb *ccb; 216 217 TWS_TRACE_DEBUG(sc, "entry", sc, 0); 218 if (!(sc->sim)) 219 return(ENXIO); 220 ccb = xpt_alloc_ccb(); 221 mtx_lock(&sc->sim_lock); 222 if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(sc->sim), 223 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 224 mtx_unlock(&sc->sim_lock); 225 xpt_free_ccb(ccb); 226 return(EIO); 227 } 228 xpt_rescan(ccb); 229 mtx_unlock(&sc->sim_lock); 230 return(0); 231} 232 233static void 234tws_action(struct cam_sim *sim, union ccb *ccb) 235{ 236 struct tws_softc *sc = (struct tws_softc *)cam_sim_softc(sim); 237 238 239 switch( ccb->ccb_h.func_code ) { 240 case XPT_SCSI_IO: 241 { 242 if ( tws_execute_scsi(sc, ccb) ) 243 TWS_TRACE_DEBUG(sc, "execute scsi failed", 0, 0); 244 break; 245 } 246 case XPT_ABORT: 247 { 248 TWS_TRACE_DEBUG(sc, "abort i/o", 0, 0); 249 ccb->ccb_h.status = CAM_UA_ABORT; 250 xpt_done(ccb); 251 break; 252 } 253 case XPT_RESET_BUS: 254 { 255 TWS_TRACE_DEBUG(sc, "reset bus", sim, ccb); 256 break; 257 } 258 case XPT_SET_TRAN_SETTINGS: 259 { 260 TWS_TRACE_DEBUG(sc, "set tran settings", sim, ccb); 261 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 262 xpt_done(ccb); 263 264 break; 265 } 266 case XPT_GET_TRAN_SETTINGS: 267 { 268 TWS_TRACE_DEBUG(sc, "get tran settings", sim, ccb); 269 270#if (__FreeBSD_version >= 700000 ) 271 ccb->cts.protocol = PROTO_SCSI; 272 ccb->cts.protocol_version = SCSI_REV_2; 273 ccb->cts.transport = XPORT_SPI; 274 ccb->cts.transport_version = 2; 275 276 ccb->cts.xport_specific.spi.valid = CTS_SPI_VALID_DISC; 277 ccb->cts.xport_specific.spi.flags = CTS_SPI_FLAGS_DISC_ENB; 278 ccb->cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ; 279 ccb->cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB; 280#else 281 ccb->cts.valid = (CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID); 282 ccb->cts.flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB); 283#endif 284 ccb->ccb_h.status = CAM_REQ_CMP; 285 xpt_done(ccb); 286 287 break; 288 } 289 case XPT_CALC_GEOMETRY: 290 { 291 TWS_TRACE_DEBUG(sc, "calc geometry(ccb,block-size)", ccb, 292 ccb->ccg.block_size); 293 cam_calc_geometry(&ccb->ccg, 1/* extended */); 294 xpt_done(ccb); 295 296 break; 297 } 298 case XPT_PATH_INQ: 299 { 300 TWS_TRACE_DEBUG(sc, "path inquiry", sim, ccb); 301 ccb->cpi.version_num = 1; 302 ccb->cpi.hba_inquiry = 0; 303 ccb->cpi.target_sprt = 0; 304 ccb->cpi.hba_misc = 0; 305 ccb->cpi.hba_eng_cnt = 0; 306 ccb->cpi.max_target = TWS_MAX_NUM_UNITS; 307 ccb->cpi.max_lun = TWS_MAX_NUM_LUNS - 1; 308 ccb->cpi.unit_number = cam_sim_unit(sim); 309 ccb->cpi.bus_id = cam_sim_bus(sim); 310 ccb->cpi.initiator_id = TWS_SCSI_INITIATOR_ID; 311 ccb->cpi.base_transfer_speed = 6000000; 312 strlcpy(ccb->cpi.sim_vid, "FreeBSD", SIM_IDLEN); 313 strlcpy(ccb->cpi.hba_vid, "3ware", HBA_IDLEN); 314 strlcpy(ccb->cpi.dev_name, cam_sim_name(sim), DEV_IDLEN); 315#if (__FreeBSD_version >= 700000 ) 316 ccb->cpi.transport = XPORT_SPI; 317 ccb->cpi.transport_version = 2; 318 ccb->cpi.protocol = PROTO_SCSI; 319 ccb->cpi.protocol_version = SCSI_REV_2; 320 ccb->cpi.maxio = TWS_MAX_IO_SIZE; 321#endif 322 ccb->ccb_h.status = CAM_REQ_CMP; 323 xpt_done(ccb); 324 325 break; 326 } 327 default: 328 TWS_TRACE_DEBUG(sc, "default", sim, ccb); 329 ccb->ccb_h.status = CAM_REQ_INVALID; 330 xpt_done(ccb); 331 break; 332 } 333} 334 335static void 336tws_scsi_complete(struct tws_request *req) 337{ 338 struct tws_softc *sc = req->sc; 339 340 mtx_lock(&sc->q_lock); 341 tws_q_remove_request(sc, req, TWS_BUSY_Q); 342 mtx_unlock(&sc->q_lock); 343 344 callout_stop(&req->timeout); 345 tws_unmap_request(req->sc, req); 346 347 348 req->ccb_ptr->ccb_h.status = CAM_REQ_CMP; 349 mtx_lock(&sc->sim_lock); 350 xpt_done(req->ccb_ptr); 351 mtx_unlock(&sc->sim_lock); 352 353 mtx_lock(&sc->q_lock); 354 tws_q_insert_tail(sc, req, TWS_FREE_Q); 355 mtx_unlock(&sc->q_lock); 356} 357 358void 359tws_getset_param_complete(struct tws_request *req) 360{ 361 struct tws_softc *sc = req->sc; 362 363 TWS_TRACE_DEBUG(sc, "getset complete", req, req->request_id); 364 365 callout_stop(&req->timeout); 366 tws_unmap_request(sc, req); 367 368 free(req->data, M_TWS); 369 370 req->state = TWS_REQ_STATE_FREE; 371} 372 373void 374tws_aen_complete(struct tws_request *req) 375{ 376 struct tws_softc *sc = req->sc; 377 struct tws_command_header *sense; 378 struct tws_event_packet event; 379 u_int16_t aen_code=0; 380 381 TWS_TRACE_DEBUG(sc, "aen complete", 0, req->request_id); 382 383 callout_stop(&req->timeout); 384 tws_unmap_request(sc, req); 385 386 sense = (struct tws_command_header *)req->data; 387 388 TWS_TRACE_DEBUG(sc,"sense code, key",sense->sense_data[0], 389 sense->sense_data[2]); 390 TWS_TRACE_DEBUG(sc,"sense rid, seve",sense->header_desc.request_id, 391 sense->status_block.res__severity); 392 TWS_TRACE_DEBUG(sc,"sense srcnum, error",sense->status_block.srcnum, 393 sense->status_block.error); 394 TWS_TRACE_DEBUG(sc,"sense shdr, ssense",sense->header_desc.size_header, 395 sense->header_desc.size_sense); 396 397 aen_code = sense->status_block.error; 398 399 switch ( aen_code ) { 400 case TWS_AEN_SYNC_TIME_WITH_HOST : 401 tws_aen_synctime_with_host(sc); 402 break; 403 case TWS_AEN_QUEUE_EMPTY : 404 break; 405 default : 406 bzero(&event, sizeof(struct tws_event_packet)); 407 event.sequence_id = sc->seq_id; 408 event.time_stamp_sec = (u_int32_t)TWS_LOCAL_TIME; 409 event.aen_code = sense->status_block.error; 410 event.severity = sense->status_block.res__severity & 0x7; 411 event.event_src = TWS_SRC_CTRL_EVENT; 412 strcpy(event.severity_str, tws_sev_str[event.severity]); 413 event.retrieved = TWS_AEN_NOT_RETRIEVED; 414 415 bcopy(sense->err_specific_desc, event.parameter_data, 416 TWS_ERROR_SPECIFIC_DESC_LEN); 417 event.parameter_data[TWS_ERROR_SPECIFIC_DESC_LEN - 1] = '\0'; 418 event.parameter_len = (u_int8_t)strlen(event.parameter_data)+1; 419 420 if ( event.parameter_len < TWS_ERROR_SPECIFIC_DESC_LEN ) { 421 event.parameter_len += ((u_int8_t)strlen(event.parameter_data + 422 event.parameter_len) + 1); 423 } 424 425 device_printf(sc->tws_dev, "%s: (0x%02X: 0x%04X): %s: %s\n", 426 event.severity_str, 427 event.event_src, 428 event.aen_code, 429 event.parameter_data + 430 (strlen(event.parameter_data) + 1), 431 event.parameter_data); 432 433 mtx_lock(&sc->gen_lock); 434 tws_circular_aenq_insert(sc, &sc->aen_q, &event); 435 sc->seq_id++; 436 mtx_unlock(&sc->gen_lock); 437 break; 438 439 } 440 441 free(req->data, M_TWS); 442 443 req->state = TWS_REQ_STATE_FREE; 444 445 if ( aen_code != TWS_AEN_QUEUE_EMPTY ) { 446 /* timeout(tws_fetch_aen, sc, 1);*/ 447 sc->stats.num_aens++; 448 tws_fetch_aen((void *)sc); 449 } 450} 451 452void 453tws_cmd_complete(struct tws_request *req) 454{ 455 struct tws_softc *sc = req->sc; 456 457 callout_stop(&req->timeout); 458 tws_unmap_request(sc, req); 459} 460 461static void 462tws_err_complete(struct tws_softc *sc, u_int64_t mfa) 463{ 464 struct tws_command_header *hdr; 465 struct tws_sense *sen; 466 struct tws_request *req; 467 u_int16_t req_id; 468 u_int32_t reg, status; 469 470 if ( !mfa ) { 471 TWS_TRACE_DEBUG(sc, "null mfa", 0, mfa); 472 return; 473 } else { 474 /* lookup the sense */ 475 sen = tws_find_sense_from_mfa(sc, mfa); 476 if ( sen == NULL ) { 477 TWS_TRACE_DEBUG(sc, "found null req", 0, mfa); 478 return; 479 } 480 hdr = sen->hdr; 481 TWS_TRACE_DEBUG(sc, "sen, hdr", sen, hdr); 482 req_id = hdr->header_desc.request_id; 483 req = &sc->reqs[req_id]; 484 TWS_TRACE_DEBUG(sc, "req, id", req, req_id); 485 if ( req->error_code != TWS_REQ_RET_SUBMIT_SUCCESS ) 486 TWS_TRACE_DEBUG(sc, "submit failure?", 0, req->error_code); 487 } 488 489 switch (req->type) { 490 case TWS_REQ_TYPE_PASSTHRU : 491 tws_passthru_err_complete(req, hdr); 492 break; 493 case TWS_REQ_TYPE_GETSET_PARAM : 494 tws_getset_param_complete(req); 495 break; 496 case TWS_REQ_TYPE_SCSI_IO : 497 tws_scsi_err_complete(req, hdr); 498 break; 499 500 } 501 502 mtx_lock(&sc->io_lock); 503 hdr->header_desc.size_header = 128; 504 reg = (u_int32_t)( mfa>>32); 505 tws_write_reg(sc, TWS_I2O0_HOBQPH, reg, 4); 506 reg = (u_int32_t)(mfa); 507 tws_write_reg(sc, TWS_I2O0_HOBQPL, reg, 4); 508 509 status = tws_read_reg(sc, TWS_I2O0_STATUS, 4); 510 if ( status & TWS_BIT13 ) { 511 device_printf(sc->tws_dev, "OBFL Overrun\n"); 512 sc->obfl_q_overrun = true; 513 } 514 mtx_unlock(&sc->io_lock); 515} 516 517static void 518tws_scsi_err_complete(struct tws_request *req, struct tws_command_header *hdr) 519{ 520 u_int8_t *sense_data; 521 struct tws_softc *sc = req->sc; 522 union ccb *ccb = req->ccb_ptr; 523 524 TWS_TRACE_DEBUG(sc, "sbe, cmd_status", hdr->status_block.error, 525 req->cmd_pkt->cmd.pkt_a.status); 526 if ( hdr->status_block.error == TWS_ERROR_LOGICAL_UNIT_NOT_SUPPORTED || 527 hdr->status_block.error == TWS_ERROR_UNIT_OFFLINE ) { 528 529 if ( ccb->ccb_h.target_lun ) { 530 TWS_TRACE_DEBUG(sc, "invalid lun error",0,0); 531 ccb->ccb_h.status |= CAM_DEV_NOT_THERE; 532 } else { 533 TWS_TRACE_DEBUG(sc, "invalid target error",0,0); 534 ccb->ccb_h.status |= CAM_SEL_TIMEOUT; 535 } 536 537 } else { 538 TWS_TRACE_DEBUG(sc, "scsi status error",0,0); 539 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 540 if (((ccb->csio.cdb_io.cdb_bytes[0] == 0x1A) && 541 (hdr->status_block.error == TWS_ERROR_NOT_SUPPORTED))) { 542 ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 543 TWS_TRACE_DEBUG(sc, "page mode not supported",0,0); 544 } 545 } 546 547 /* if there were no error simply mark complete error */ 548 if (ccb->ccb_h.status == 0) 549 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 550 551 sense_data = (u_int8_t *)&ccb->csio.sense_data; 552 if (sense_data) { 553 memcpy(sense_data, hdr->sense_data, TWS_SENSE_DATA_LENGTH ); 554 ccb->csio.sense_len = TWS_SENSE_DATA_LENGTH; 555 ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 556 } 557 ccb->csio.scsi_status = req->cmd_pkt->cmd.pkt_a.status; 558 559 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 560 mtx_lock(&sc->sim_lock); 561 xpt_done(ccb); 562 mtx_unlock(&sc->sim_lock); 563 564 callout_stop(&req->timeout); 565 tws_unmap_request(req->sc, req); 566 mtx_lock(&sc->q_lock); 567 tws_q_remove_request(sc, req, TWS_BUSY_Q); 568 tws_q_insert_tail(sc, req, TWS_FREE_Q); 569 mtx_unlock(&sc->q_lock); 570} 571 572static void 573tws_passthru_err_complete(struct tws_request *req, 574 struct tws_command_header *hdr) 575{ 576 TWS_TRACE_DEBUG(req->sc, "entry", hdr, req->request_id); 577 req->error_code = hdr->status_block.error; 578 memcpy(&(req->cmd_pkt->hdr), hdr, sizeof(struct tws_command_header)); 579 tws_passthru_complete(req); 580} 581 582static void 583tws_drain_busy_queue(struct tws_softc *sc) 584{ 585 struct tws_request *req; 586 union ccb *ccb; 587 TWS_TRACE_DEBUG(sc, "entry", 0, 0); 588 589 mtx_lock(&sc->q_lock); 590 req = tws_q_remove_tail(sc, TWS_BUSY_Q); 591 mtx_unlock(&sc->q_lock); 592 while ( req ) { 593 TWS_TRACE_DEBUG(sc, "moved to TWS_COMPLETE_Q", 0, req->request_id); 594 callout_stop(&req->timeout); 595 596 req->error_code = TWS_REQ_RET_RESET; 597 ccb = (union ccb *)(req->ccb_ptr); 598 599 ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 600 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 601 ccb->ccb_h.status |= CAM_SCSI_BUS_RESET; 602 603 tws_unmap_request(req->sc, req); 604 605 mtx_lock(&sc->sim_lock); 606 xpt_done(req->ccb_ptr); 607 mtx_unlock(&sc->sim_lock); 608 609 mtx_lock(&sc->q_lock); 610 tws_q_insert_tail(sc, req, TWS_FREE_Q); 611 req = tws_q_remove_tail(sc, TWS_BUSY_Q); 612 mtx_unlock(&sc->q_lock); 613 } 614} 615 616 617static void 618tws_drain_reserved_reqs(struct tws_softc *sc) 619{ 620 struct tws_request *r; 621 622 r = &sc->reqs[TWS_REQ_TYPE_AEN_FETCH]; 623 if ( r->state != TWS_REQ_STATE_FREE ) { 624 TWS_TRACE_DEBUG(sc, "reset aen req", 0, 0); 625 callout_stop(&r->timeout); 626 tws_unmap_request(sc, r); 627 free(r->data, M_TWS); 628 r->state = TWS_REQ_STATE_FREE; 629 r->error_code = TWS_REQ_RET_RESET; 630 } 631 632 r = &sc->reqs[TWS_REQ_TYPE_PASSTHRU]; 633 if ( r->state == TWS_REQ_STATE_BUSY ) { 634 TWS_TRACE_DEBUG(sc, "reset passthru req", 0, 0); 635 r->error_code = TWS_REQ_RET_RESET; 636 } 637 638 r = &sc->reqs[TWS_REQ_TYPE_GETSET_PARAM]; 639 if ( r->state != TWS_REQ_STATE_FREE ) { 640 TWS_TRACE_DEBUG(sc, "reset setparam req", 0, 0); 641 callout_stop(&r->timeout); 642 tws_unmap_request(sc, r); 643 free(r->data, M_TWS); 644 r->state = TWS_REQ_STATE_FREE; 645 r->error_code = TWS_REQ_RET_RESET; 646 } 647} 648 649static void 650tws_drain_response_queue(struct tws_softc *sc) 651{ 652 u_int16_t req_id; 653 u_int64_t mfa; 654 while ( tws_get_response(sc, &req_id, &mfa) ); 655} 656 657 658static int32_t 659tws_execute_scsi(struct tws_softc *sc, union ccb *ccb) 660{ 661 struct tws_command_packet *cmd_pkt; 662 struct tws_request *req; 663 struct ccb_hdr *ccb_h = &(ccb->ccb_h); 664 struct ccb_scsiio *csio = &(ccb->csio); 665 int error; 666 u_int16_t lun; 667 668 mtx_assert(&sc->sim_lock, MA_OWNED); 669 if (ccb_h->target_id >= TWS_MAX_NUM_UNITS) { 670 TWS_TRACE_DEBUG(sc, "traget id too big", ccb_h->target_id, ccb_h->target_lun); 671 ccb_h->status |= CAM_TID_INVALID; 672 xpt_done(ccb); 673 return(0); 674 } 675 if (ccb_h->target_lun >= TWS_MAX_NUM_LUNS) { 676 TWS_TRACE_DEBUG(sc, "target lun 2 big", ccb_h->target_id, ccb_h->target_lun); 677 ccb_h->status |= CAM_LUN_INVALID; 678 xpt_done(ccb); 679 return(0); 680 } 681 682 if(ccb_h->flags & CAM_CDB_PHYS) { 683 TWS_TRACE_DEBUG(sc, "cdb phy", ccb_h->target_id, ccb_h->target_lun); 684 ccb_h->status = CAM_REQ_INVALID; 685 xpt_done(ccb); 686 return(0); 687 } 688 689 /* 690 * We are going to work on this request. Mark it as enqueued (though 691 * we don't actually queue it...) 692 */ 693 ccb_h->status |= CAM_SIM_QUEUED; 694 695 req = tws_get_request(sc, TWS_REQ_TYPE_SCSI_IO); 696 if ( !req ) { 697 TWS_TRACE_DEBUG(sc, "no reqs", ccb_h->target_id, ccb_h->target_lun); 698 ccb_h->status |= CAM_REQUEUE_REQ; 699 xpt_done(ccb); 700 return(0); 701 } 702 703 if((ccb_h->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 704 if(ccb_h->flags & CAM_DIR_IN) 705 req->flags |= TWS_DIR_IN; 706 if(ccb_h->flags & CAM_DIR_OUT) 707 req->flags |= TWS_DIR_OUT; 708 } else { 709 req->flags = TWS_DIR_NONE; /* no data */ 710 } 711 712 req->type = TWS_REQ_TYPE_SCSI_IO; 713 req->cb = tws_scsi_complete; 714 715 cmd_pkt = req->cmd_pkt; 716 /* cmd_pkt->hdr.header_desc.size_header = 128; */ 717 cmd_pkt->cmd.pkt_a.res__opcode = TWS_FW_CMD_EXECUTE_SCSI; 718 cmd_pkt->cmd.pkt_a.unit = ccb_h->target_id; 719 cmd_pkt->cmd.pkt_a.status = 0; 720 cmd_pkt->cmd.pkt_a.sgl_offset = 16; 721 722 /* lower nibble */ 723 lun = ccb_h->target_lun & 0XF; 724 lun = lun << 12; 725 cmd_pkt->cmd.pkt_a.lun_l4__req_id = lun | req->request_id; 726 /* upper nibble */ 727 lun = ccb_h->target_lun & 0XF0; 728 lun = lun << 8; 729 cmd_pkt->cmd.pkt_a.lun_h4__sgl_entries = lun; 730 731#ifdef TWS_DEBUG 732 if ( csio->cdb_len > 16 ) 733 TWS_TRACE(sc, "cdb len too big", ccb_h->target_id, csio->cdb_len); 734#endif 735 736 if(ccb_h->flags & CAM_CDB_POINTER) 737 bcopy(csio->cdb_io.cdb_ptr, cmd_pkt->cmd.pkt_a.cdb, csio->cdb_len); 738 else 739 bcopy(csio->cdb_io.cdb_bytes, cmd_pkt->cmd.pkt_a.cdb, csio->cdb_len); 740 741 req->data = ccb; 742 req->flags |= TWS_DATA_CCB; 743 /* save ccb ptr */ 744 req->ccb_ptr = ccb; 745 /* 746 * tws_map_load_data_callback will fill in the SGL, 747 * and submit the I/O. 748 */ 749 sc->stats.scsi_ios++; 750 callout_reset_sbt(&req->timeout, SBT_1MS * ccb->ccb_h.timeout, 0, 751 tws_timeout, req, 0); 752 error = tws_map_request(sc, req); 753 return(error); 754} 755 756 757int 758tws_send_scsi_cmd(struct tws_softc *sc, int cmd) 759{ 760 struct tws_request *req; 761 struct tws_command_packet *cmd_pkt; 762 int error; 763 764 TWS_TRACE_DEBUG(sc, "entry",sc, cmd); 765 req = tws_get_request(sc, TWS_REQ_TYPE_AEN_FETCH); 766 767 if ( req == NULL ) 768 return(ENOMEM); 769 770 req->cb = tws_aen_complete; 771 772 cmd_pkt = req->cmd_pkt; 773 cmd_pkt->cmd.pkt_a.res__opcode = TWS_FW_CMD_EXECUTE_SCSI; 774 cmd_pkt->cmd.pkt_a.status = 0; 775 cmd_pkt->cmd.pkt_a.unit = 0; 776 cmd_pkt->cmd.pkt_a.sgl_offset = 16; 777 cmd_pkt->cmd.pkt_a.lun_l4__req_id = req->request_id; 778 779 cmd_pkt->cmd.pkt_a.cdb[0] = (u_int8_t)cmd; 780 cmd_pkt->cmd.pkt_a.cdb[4] = 128; 781 782 req->length = TWS_SECTOR_SIZE; 783 req->data = malloc(TWS_SECTOR_SIZE, M_TWS, M_NOWAIT); 784 if ( req->data == NULL ) 785 return(ENOMEM); 786 bzero(req->data, TWS_SECTOR_SIZE); 787 req->flags = TWS_DIR_IN; 788 789 callout_reset(&req->timeout, (TWS_IO_TIMEOUT * hz), tws_timeout, req); 790 error = tws_map_request(sc, req); 791 return(error); 792 793} 794 795int 796tws_set_param(struct tws_softc *sc, u_int32_t table_id, u_int32_t param_id, 797 u_int32_t param_size, void *data) 798{ 799 struct tws_request *req; 800 struct tws_command_packet *cmd_pkt; 801 union tws_command_giga *cmd; 802 struct tws_getset_param *param; 803 int error; 804 805 req = tws_get_request(sc, TWS_REQ_TYPE_GETSET_PARAM); 806 if ( req == NULL ) { 807 TWS_TRACE_DEBUG(sc, "null req", 0, 0); 808 return(ENOMEM); 809 } 810 811 req->length = TWS_SECTOR_SIZE; 812 req->data = malloc(TWS_SECTOR_SIZE, M_TWS, M_NOWAIT); 813 if ( req->data == NULL ) 814 return(ENOMEM); 815 bzero(req->data, TWS_SECTOR_SIZE); 816 param = (struct tws_getset_param *)req->data; 817 818 req->cb = tws_getset_param_complete; 819 req->flags = TWS_DIR_OUT; 820 cmd_pkt = req->cmd_pkt; 821 822 cmd = &cmd_pkt->cmd.pkt_g; 823 cmd->param.sgl_off__opcode = 824 BUILD_SGL_OFF__OPCODE(2, TWS_FW_CMD_SET_PARAM); 825 cmd->param.request_id = (u_int8_t)req->request_id; 826 cmd->param.host_id__unit = 0; 827 cmd->param.param_count = 1; 828 cmd->param.size = 2; /* map routine will add sgls */ 829 830 /* Specify which parameter we want to set. */ 831 param->table_id = (table_id | TWS_9K_PARAM_DESCRIPTOR); 832 param->parameter_id = (u_int8_t)(param_id); 833 param->parameter_size_bytes = (u_int16_t)param_size; 834 memcpy(param->data, data, param_size); 835 836 callout_reset(&req->timeout, (TWS_IOCTL_TIMEOUT * hz), tws_timeout, req); 837 error = tws_map_request(sc, req); 838 return(error); 839 840} 841 842int 843tws_get_param(struct tws_softc *sc, u_int32_t table_id, u_int32_t param_id, 844 u_int32_t param_size, void *data) 845{ 846 struct tws_request *req; 847 struct tws_command_packet *cmd_pkt; 848 union tws_command_giga *cmd; 849 struct tws_getset_param *param; 850 u_int16_t reqid; 851 u_int64_t mfa; 852 int error = SUCCESS; 853 854 855 req = tws_get_request(sc, TWS_REQ_TYPE_GETSET_PARAM); 856 if ( req == NULL ) { 857 TWS_TRACE_DEBUG(sc, "null req", 0, 0); 858 return(FAILURE); 859 } 860 861 req->length = TWS_SECTOR_SIZE; 862 req->data = malloc(TWS_SECTOR_SIZE, M_TWS, M_NOWAIT); 863 if ( req->data == NULL ) 864 return(FAILURE); 865 bzero(req->data, TWS_SECTOR_SIZE); 866 param = (struct tws_getset_param *)req->data; 867 868 req->cb = NULL; 869 req->flags = TWS_DIR_IN; 870 cmd_pkt = req->cmd_pkt; 871 872 cmd = &cmd_pkt->cmd.pkt_g; 873 cmd->param.sgl_off__opcode = 874 BUILD_SGL_OFF__OPCODE(2, TWS_FW_CMD_GET_PARAM); 875 cmd->param.request_id = (u_int8_t)req->request_id; 876 cmd->param.host_id__unit = 0; 877 cmd->param.param_count = 1; 878 cmd->param.size = 2; /* map routine will add sgls */ 879 880 /* Specify which parameter we want to set. */ 881 param->table_id = (table_id | TWS_9K_PARAM_DESCRIPTOR); 882 param->parameter_id = (u_int8_t)(param_id); 883 param->parameter_size_bytes = (u_int16_t)param_size; 884 885 error = tws_map_request(sc, req); 886 if (!error) { 887 reqid = tws_poll4_response(sc, &mfa); 888 tws_unmap_request(sc, req); 889 890 if ( reqid == TWS_REQ_TYPE_GETSET_PARAM ) { 891 memcpy(data, param->data, param_size); 892 } else { 893 error = FAILURE; 894 } 895 } 896 897 free(req->data, M_TWS); 898 req->state = TWS_REQ_STATE_FREE; 899 return(error); 900 901} 902 903void 904tws_unmap_request(struct tws_softc *sc, struct tws_request *req) 905{ 906 if (req->data != NULL) { 907 if ( req->flags & TWS_DIR_IN ) 908 bus_dmamap_sync(sc->data_tag, req->dma_map, 909 BUS_DMASYNC_POSTREAD); 910 if ( req->flags & TWS_DIR_OUT ) 911 bus_dmamap_sync(sc->data_tag, req->dma_map, 912 BUS_DMASYNC_POSTWRITE); 913 mtx_lock(&sc->io_lock); 914 bus_dmamap_unload(sc->data_tag, req->dma_map); 915 mtx_unlock(&sc->io_lock); 916 } 917} 918 919int32_t 920tws_map_request(struct tws_softc *sc, struct tws_request *req) 921{ 922 int32_t error = 0; 923 924 925 /* If the command involves data, map that too. */ 926 if (req->data != NULL) { 927 int my_flags = ((req->type == TWS_REQ_TYPE_SCSI_IO) ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT); 928 929 /* 930 * Map the data buffer into bus space and build the SG list. 931 */ 932 mtx_lock(&sc->io_lock); 933 if (req->flags & TWS_DATA_CCB) 934 error = bus_dmamap_load_ccb(sc->data_tag, req->dma_map, 935 req->data, 936 tws_dmamap_data_load_cbfn, req, 937 my_flags); 938 else 939 error = bus_dmamap_load(sc->data_tag, req->dma_map, 940 req->data, req->length, 941 tws_dmamap_data_load_cbfn, req, 942 my_flags); 943 mtx_unlock(&sc->io_lock); 944 945 if (error == EINPROGRESS) { 946 TWS_TRACE(sc, "in progress", 0, error); 947 tws_freeze_simq(sc, req); 948 error = 0; // EINPROGRESS is not a fatal error. 949 } 950 } else { /* no data involved */ 951 error = tws_submit_command(sc, req); 952 } 953 return(error); 954} 955 956 957static void 958tws_dmamap_data_load_cbfn(void *arg, bus_dma_segment_t *segs, 959 int nseg, int error) 960{ 961 struct tws_request *req = (struct tws_request *)arg; 962 struct tws_softc *sc = req->sc; 963 u_int16_t sgls = nseg; 964 void *sgl_ptr; 965 struct tws_cmd_generic *gcmd; 966 967 968 if ( error ) { 969 TWS_TRACE(sc, "SOMETHING BAD HAPPENED! error = %d\n", error, 0); 970 } 971 972 if ( error == EFBIG ) { 973 TWS_TRACE(sc, "not enough data segs", 0, nseg); 974 req->error_code = error; 975 req->ccb_ptr->ccb_h.status = CAM_REQ_TOO_BIG; 976 return; 977 } 978 979 if ( req->flags & TWS_DIR_IN ) 980 bus_dmamap_sync(req->sc->data_tag, req->dma_map, 981 BUS_DMASYNC_PREREAD); 982 if ( req->flags & TWS_DIR_OUT ) 983 bus_dmamap_sync(req->sc->data_tag, req->dma_map, 984 BUS_DMASYNC_PREWRITE); 985 if ( segs ) { 986 if ( (req->type == TWS_REQ_TYPE_PASSTHRU && 987 GET_OPCODE(req->cmd_pkt->cmd.pkt_a.res__opcode) != 988 TWS_FW_CMD_EXECUTE_SCSI) || 989 req->type == TWS_REQ_TYPE_GETSET_PARAM) { 990 gcmd = &req->cmd_pkt->cmd.pkt_g.generic; 991 sgl_ptr = (u_int32_t *)(gcmd) + gcmd->size; 992 gcmd->size += sgls * 993 ((req->sc->is64bit && !tws_use_32bit_sgls) ? 4 : 2 ); 994 tws_fill_sg_list(req->sc, (void *)segs, sgl_ptr, sgls); 995 996 } else { 997 tws_fill_sg_list(req->sc, (void *)segs, 998 (void *)&(req->cmd_pkt->cmd.pkt_a.sg_list), sgls); 999 req->cmd_pkt->cmd.pkt_a.lun_h4__sgl_entries |= sgls ; 1000 } 1001 } 1002 1003 1004 req->error_code = tws_submit_command(req->sc, req); 1005 1006} 1007 1008 1009static void 1010tws_fill_sg_list(struct tws_softc *sc, void *sgl_src, void *sgl_dest, 1011 u_int16_t num_sgl_entries) 1012{ 1013 int i; 1014 1015 if ( sc->is64bit ) { 1016 struct tws_sg_desc64 *sgl_s = (struct tws_sg_desc64 *)sgl_src; 1017 1018 if ( !tws_use_32bit_sgls ) { 1019 struct tws_sg_desc64 *sgl_d = (struct tws_sg_desc64 *)sgl_dest; 1020 if ( num_sgl_entries > TWS_MAX_64BIT_SG_ELEMENTS ) 1021 TWS_TRACE(sc, "64bit sg overflow", num_sgl_entries, 0); 1022 for (i = 0; i < num_sgl_entries; i++) { 1023 sgl_d[i].address = sgl_s->address; 1024 sgl_d[i].length = sgl_s->length; 1025 sgl_d[i].flag = 0; 1026 sgl_d[i].reserved = 0; 1027 sgl_s = (struct tws_sg_desc64 *) (((u_int8_t *)sgl_s) + 1028 sizeof(bus_dma_segment_t)); 1029 } 1030 } else { 1031 struct tws_sg_desc32 *sgl_d = (struct tws_sg_desc32 *)sgl_dest; 1032 if ( num_sgl_entries > TWS_MAX_32BIT_SG_ELEMENTS ) 1033 TWS_TRACE(sc, "32bit sg overflow", num_sgl_entries, 0); 1034 for (i = 0; i < num_sgl_entries; i++) { 1035 sgl_d[i].address = sgl_s->address; 1036 sgl_d[i].length = sgl_s->length; 1037 sgl_d[i].flag = 0; 1038 sgl_s = (struct tws_sg_desc64 *) (((u_int8_t *)sgl_s) + 1039 sizeof(bus_dma_segment_t)); 1040 } 1041 } 1042 } else { 1043 struct tws_sg_desc32 *sgl_s = (struct tws_sg_desc32 *)sgl_src; 1044 struct tws_sg_desc32 *sgl_d = (struct tws_sg_desc32 *)sgl_dest; 1045 1046 if ( num_sgl_entries > TWS_MAX_32BIT_SG_ELEMENTS ) 1047 TWS_TRACE(sc, "32bit sg overflow", num_sgl_entries, 0); 1048 1049 1050 for (i = 0; i < num_sgl_entries; i++) { 1051 sgl_d[i].address = sgl_s[i].address; 1052 sgl_d[i].length = sgl_s[i].length; 1053 sgl_d[i].flag = 0; 1054 } 1055 } 1056} 1057 1058 1059void 1060tws_intr(void *arg) 1061{ 1062 struct tws_softc *sc = (struct tws_softc *)arg; 1063 u_int32_t histat=0, db=0; 1064 1065 if (!(sc)) { 1066 device_printf(sc->tws_dev, "null softc!!!\n"); 1067 return; 1068 } 1069 1070 if ( tws_get_state(sc) == TWS_RESET ) { 1071 return; 1072 } 1073 1074 if ( tws_get_state(sc) != TWS_ONLINE ) { 1075 return; 1076 } 1077 1078 sc->stats.num_intrs++; 1079 histat = tws_read_reg(sc, TWS_I2O0_HISTAT, 4); 1080 if ( histat & TWS_BIT2 ) { 1081 TWS_TRACE_DEBUG(sc, "door bell :)", histat, TWS_I2O0_HISTAT); 1082 db = tws_read_reg(sc, TWS_I2O0_IOBDB, 4); 1083 if ( db & TWS_BIT21 ) { 1084 tws_intr_attn_error(sc); 1085 return; 1086 } 1087 if ( db & TWS_BIT18 ) { 1088 tws_intr_attn_aen(sc); 1089 } 1090 } 1091 1092 if ( histat & TWS_BIT3 ) { 1093 tws_intr_resp(sc); 1094 } 1095} 1096 1097static void 1098tws_intr_attn_aen(struct tws_softc *sc) 1099{ 1100 u_int32_t db=0; 1101 1102 /* maskoff db intrs until all the aens are fetched */ 1103 /* tws_disable_db_intr(sc); */ 1104 tws_fetch_aen((void *)sc); 1105 tws_write_reg(sc, TWS_I2O0_HOBDBC, TWS_BIT18, 4); 1106 db = tws_read_reg(sc, TWS_I2O0_IOBDB, 4); 1107 1108} 1109 1110static void 1111tws_intr_attn_error(struct tws_softc *sc) 1112{ 1113 u_int32_t db=0; 1114 1115 TWS_TRACE(sc, "attn error", 0, 0); 1116 tws_write_reg(sc, TWS_I2O0_HOBDBC, ~0, 4); 1117 db = tws_read_reg(sc, TWS_I2O0_IOBDB, 4); 1118 device_printf(sc->tws_dev, "Micro controller error.\n"); 1119 tws_reset(sc); 1120} 1121 1122static void 1123tws_intr_resp(struct tws_softc *sc) 1124{ 1125 u_int16_t req_id; 1126 u_int64_t mfa; 1127 1128 while ( tws_get_response(sc, &req_id, &mfa) ) { 1129 sc->stats.reqs_out++; 1130 if ( req_id == TWS_INVALID_REQID ) { 1131 TWS_TRACE_DEBUG(sc, "invalid req_id", mfa, req_id); 1132 sc->stats.reqs_errored++; 1133 tws_err_complete(sc, mfa); 1134 continue; 1135 } 1136 sc->reqs[req_id].cb(&sc->reqs[req_id]); 1137 } 1138 1139} 1140 1141 1142static void 1143tws_poll(struct cam_sim *sim) 1144{ 1145 struct tws_softc *sc = (struct tws_softc *)cam_sim_softc(sim); 1146 TWS_TRACE_DEBUG(sc, "entry", 0, 0); 1147 tws_intr((void *) sc); 1148} 1149 1150void 1151tws_timeout(void *arg) 1152{ 1153 struct tws_request *req = (struct tws_request *)arg; 1154 struct tws_softc *sc = req->sc; 1155 1156 1157 if ( req->error_code == TWS_REQ_RET_RESET ) { 1158 return; 1159 } 1160 1161 mtx_lock(&sc->gen_lock); 1162 if ( req->error_code == TWS_REQ_RET_RESET ) { 1163 mtx_unlock(&sc->gen_lock); 1164 return; 1165 } 1166 1167 if ( tws_get_state(sc) == TWS_RESET ) { 1168 mtx_unlock(&sc->gen_lock); 1169 return; 1170 } 1171 1172 xpt_freeze_simq(sc->sim, 1); 1173 1174 tws_send_event(sc, TWS_RESET_START); 1175 1176 if (req->type == TWS_REQ_TYPE_SCSI_IO) { 1177 device_printf(sc->tws_dev, "I/O Request timed out... Resetting controller\n"); 1178 } else if (req->type == TWS_REQ_TYPE_PASSTHRU) { 1179 device_printf(sc->tws_dev, "IOCTL Request timed out... Resetting controller\n"); 1180 } else { 1181 device_printf(sc->tws_dev, "Internal Request timed out... Resetting controller\n"); 1182 } 1183 1184 tws_assert_soft_reset(sc); 1185 tws_turn_off_interrupts(sc); 1186 tws_reset_cb( (void*) sc ); 1187 tws_reinit( (void*) sc ); 1188 1189// device_printf(sc->tws_dev, "Controller Reset complete!\n"); 1190 tws_send_event(sc, TWS_RESET_COMPLETE); 1191 mtx_unlock(&sc->gen_lock); 1192 1193 xpt_release_simq(sc->sim, 1); 1194} 1195 1196void 1197tws_reset(void *arg) 1198{ 1199 struct tws_softc *sc = (struct tws_softc *)arg; 1200 1201 mtx_lock(&sc->gen_lock); 1202 if ( tws_get_state(sc) == TWS_RESET ) { 1203 mtx_unlock(&sc->gen_lock); 1204 return; 1205 } 1206 1207 xpt_freeze_simq(sc->sim, 1); 1208 1209 tws_send_event(sc, TWS_RESET_START); 1210 1211 device_printf(sc->tws_dev, "Resetting controller\n"); 1212 1213 tws_assert_soft_reset(sc); 1214 tws_turn_off_interrupts(sc); 1215 tws_reset_cb( (void*) sc ); 1216 tws_reinit( (void*) sc ); 1217 1218// device_printf(sc->tws_dev, "Controller Reset complete!\n"); 1219 tws_send_event(sc, TWS_RESET_COMPLETE); 1220 mtx_unlock(&sc->gen_lock); 1221 1222 xpt_release_simq(sc->sim, 1); 1223} 1224 1225static void 1226tws_reset_cb(void *arg) 1227{ 1228 struct tws_softc *sc = (struct tws_softc *)arg; 1229 time_t endt; 1230 int found = 0; 1231 u_int32_t reg; 1232 1233 if ( tws_get_state(sc) != TWS_RESET ) { 1234 return; 1235 } 1236 1237// device_printf(sc->tws_dev, "Draining Busy Queue\n"); 1238 tws_drain_busy_queue(sc); 1239// device_printf(sc->tws_dev, "Draining Reserved Reqs\n"); 1240 tws_drain_reserved_reqs(sc); 1241// device_printf(sc->tws_dev, "Draining Response Queue\n"); 1242 tws_drain_response_queue(sc); 1243 1244// device_printf(sc->tws_dev, "Looking for controller ready flag...\n"); 1245 endt = TWS_LOCAL_TIME + TWS_POLL_TIMEOUT; 1246 while ((TWS_LOCAL_TIME <= endt) && (!found)) { 1247 reg = tws_read_reg(sc, TWS_I2O0_SCRPD3, 4); 1248 if ( reg & TWS_BIT13 ) { 1249 found = 1; 1250// device_printf(sc->tws_dev, " ... Got it!\n"); 1251 } 1252 } 1253 if ( !found ) 1254 device_printf(sc->tws_dev, " ... Controller ready flag NOT found!\n"); 1255} 1256 1257static void 1258tws_reinit(void *arg) 1259{ 1260 struct tws_softc *sc = (struct tws_softc *)arg; 1261 int timeout_val=0; 1262 int try=2; 1263 int done=0; 1264 1265 1266// device_printf(sc->tws_dev, "Waiting for Controller Ready\n"); 1267 while ( !done && try ) { 1268 if ( tws_ctlr_ready(sc) ) { 1269 done = 1; 1270 break; 1271 } else { 1272 timeout_val += 5; 1273 if ( timeout_val >= TWS_RESET_TIMEOUT ) { 1274 timeout_val = 0; 1275 if ( try ) 1276 tws_assert_soft_reset(sc); 1277 try--; 1278 } 1279 mtx_sleep(sc, &sc->gen_lock, 0, "tws_reinit", 5*hz); 1280 } 1281 } 1282 1283 if (!done) { 1284 device_printf(sc->tws_dev, "FAILED to get Controller Ready!\n"); 1285 return; 1286 } 1287 1288 sc->obfl_q_overrun = false; 1289// device_printf(sc->tws_dev, "Sending initConnect\n"); 1290 if ( tws_init_connect(sc, tws_queue_depth) ) { 1291 TWS_TRACE_DEBUG(sc, "initConnect failed", 0, sc->is64bit); 1292 } 1293 tws_init_obfl_q(sc); 1294 1295 tws_turn_on_interrupts(sc); 1296 1297 wakeup_one(sc); 1298} 1299 1300 1301static void 1302tws_freeze_simq(struct tws_softc *sc, struct tws_request *req) 1303{ 1304 /* Only for IO commands */ 1305 if (req->type == TWS_REQ_TYPE_SCSI_IO) { 1306 union ccb *ccb = (union ccb *)(req->ccb_ptr); 1307 1308 xpt_freeze_simq(sc->sim, 1); 1309 ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 1310 ccb->ccb_h.status |= CAM_REQUEUE_REQ; 1311 } 1312} 1313 1314 1315TUNABLE_INT("hw.tws.cam_depth", &tws_cam_depth); 1316