1 /*- 2 * Copyright (c) 2000, 2001 Michael Smith 3 * Copyright (c) 2000 BSDi 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: src/sys/dev/mly/mly.c,v 1.3.2.3 2001/03/05 20:17:24 msmith Exp $ 28 * $DragonFly: src/sys/dev/raid/mly/mly.c,v 1.9 2004/05/19 22:52:48 dillon Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/conf.h> 37 #include <sys/ctype.h> 38 #include <sys/ioccom.h> 39 #include <sys/stat.h> 40 41 #include <machine/bus_memio.h> 42 #include <machine/bus.h> 43 #include <machine/resource.h> 44 #include <sys/rman.h> 45 46 #include <bus/cam/scsi/scsi_all.h> 47 48 #include "mlyreg.h" 49 #include "mlyio.h" 50 #include "mlyvar.h" 51 #define MLY_DEFINE_TABLES 52 #include "mly_tables.h" 53 54 static int mly_get_controllerinfo(struct mly_softc *sc); 55 static void mly_scan_devices(struct mly_softc *sc); 56 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 57 static void mly_complete_rescan(struct mly_command *mc); 58 static int mly_get_eventstatus(struct mly_softc *sc); 59 static int mly_enable_mmbox(struct mly_softc *sc); 60 static int mly_flush(struct mly_softc *sc); 61 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 62 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 63 static void mly_fetch_event(struct mly_softc *sc); 64 static void mly_complete_event(struct mly_command *mc); 65 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 66 static void mly_periodic(void *data); 67 68 static int mly_immediate_command(struct mly_command *mc); 69 static int mly_start(struct mly_command *mc); 70 static void mly_complete(void *context, int pending); 71 72 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 73 static int mly_alloc_commands(struct mly_softc *sc); 74 static void mly_map_command(struct mly_command *mc); 75 static void mly_unmap_command(struct mly_command *mc); 76 77 static int mly_fwhandshake(struct mly_softc *sc); 78 79 static void mly_describe_controller(struct mly_softc *sc); 80 #ifdef MLY_DEBUG 81 static void mly_printstate(struct mly_softc *sc); 82 static void mly_print_command(struct mly_command *mc); 83 static void mly_print_packet(struct mly_command *mc); 84 static void mly_panic(struct mly_softc *sc, char *reason); 85 #endif 86 void mly_print_controller(int controller); 87 88 static d_open_t mly_user_open; 89 static d_close_t mly_user_close; 90 static d_ioctl_t mly_user_ioctl; 91 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 92 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 93 94 #define MLY_CDEV_MAJOR 158 95 96 static struct cdevsw mly_cdevsw = { 97 /* name */ "mly", 98 /* cmaj */ MLY_CDEV_MAJOR, 99 /* flags */ 0, 100 /* port */ NULL, 101 /* clone */ NULL, 102 103 mly_user_open, 104 mly_user_close, 105 noread, 106 nowrite, 107 mly_user_ioctl, 108 nopoll, 109 nommap, 110 nostrategy, 111 nodump, 112 nopsize 113 }; 114 115 /******************************************************************************** 116 ******************************************************************************** 117 Device Interface 118 ******************************************************************************** 119 ********************************************************************************/ 120 121 /******************************************************************************** 122 * Initialise the controller and softc 123 */ 124 int 125 mly_attach(struct mly_softc *sc) 126 { 127 int error; 128 129 debug_called(1); 130 131 /* 132 * Initialise per-controller queues. 133 */ 134 mly_initq_free(sc); 135 mly_initq_ready(sc); 136 mly_initq_busy(sc); 137 mly_initq_complete(sc); 138 139 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 140 /* 141 * Initialise command-completion task. 142 */ 143 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 144 #endif 145 146 /* disable interrupts before we start talking to the controller */ 147 MLY_MASK_INTERRUPTS(sc); 148 149 /* 150 * Wait for the controller to come ready, handshake with the firmware if required. 151 * This is typically only necessary on platforms where the controller BIOS does not 152 * run. 153 */ 154 if ((error = mly_fwhandshake(sc))) 155 return(error); 156 157 /* 158 * Allocate command buffers 159 */ 160 if ((error = mly_alloc_commands(sc))) 161 return(error); 162 163 /* 164 * Obtain controller feature information 165 */ 166 if ((error = mly_get_controllerinfo(sc))) 167 return(error); 168 169 /* 170 * Get the current event counter for health purposes, populate the initial 171 * health status buffer. 172 */ 173 if ((error = mly_get_eventstatus(sc))) 174 return(error); 175 176 /* 177 * Enable memory-mailbox mode 178 */ 179 if ((error = mly_enable_mmbox(sc))) 180 return(error); 181 182 /* 183 * Attach to CAM. 184 */ 185 if ((error = mly_cam_attach(sc))) 186 return(error); 187 188 /* 189 * Print a little information about the controller 190 */ 191 mly_describe_controller(sc); 192 193 /* 194 * Mark all attached devices for rescan 195 */ 196 mly_scan_devices(sc); 197 198 /* 199 * Instigate the first status poll immediately. Rescan completions won't 200 * happen until interrupts are enabled, which should still be before 201 * the SCSI subsystem gets to us. (XXX assuming CAM and interrupt-driven 202 * discovery here...) 203 */ 204 mly_periodic((void *)sc); 205 206 /* 207 * Create the control device. 208 */ 209 cdevsw_add(&mly_cdevsw, -1, device_get_unit(sc->mly_dev)); 210 sc->mly_dev_t = make_dev(&mly_cdevsw, device_get_unit(sc->mly_dev), 211 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 212 "mly%d", device_get_unit(sc->mly_dev)); 213 sc->mly_dev_t->si_drv1 = sc; 214 215 /* enable interrupts now */ 216 MLY_UNMASK_INTERRUPTS(sc); 217 218 return(0); 219 } 220 221 /******************************************************************************** 222 * Bring the controller to a state where it can be safely left alone. 223 */ 224 void 225 mly_detach(struct mly_softc *sc) 226 { 227 228 debug_called(1); 229 230 /* kill the periodic event */ 231 untimeout(mly_periodic, sc, sc->mly_periodic); 232 233 sc->mly_state |= MLY_STATE_SUSPEND; 234 235 /* flush controller */ 236 mly_printf(sc, "flushing cache..."); 237 printf("%s\n", mly_flush(sc) ? "failed" : "done"); 238 239 MLY_MASK_INTERRUPTS(sc); 240 } 241 242 /******************************************************************************** 243 ******************************************************************************** 244 Command Wrappers 245 ******************************************************************************** 246 ********************************************************************************/ 247 248 /******************************************************************************** 249 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 250 */ 251 static int 252 mly_get_controllerinfo(struct mly_softc *sc) 253 { 254 struct mly_command_ioctl mci; 255 u_int8_t status; 256 int error; 257 258 debug_called(1); 259 260 if (sc->mly_controllerinfo != NULL) 261 free(sc->mly_controllerinfo, M_DEVBUF); 262 263 /* build the getcontrollerinfo ioctl and send it */ 264 bzero(&mci, sizeof(mci)); 265 sc->mly_controllerinfo = NULL; 266 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 267 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 268 &status, NULL, NULL))) 269 return(error); 270 if (status != 0) 271 return(EIO); 272 273 if (sc->mly_controllerparam != NULL) 274 free(sc->mly_controllerparam, M_DEVBUF); 275 276 /* build the getcontrollerparameter ioctl and send it */ 277 bzero(&mci, sizeof(mci)); 278 sc->mly_controllerparam = NULL; 279 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 280 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 281 &status, NULL, NULL))) 282 return(error); 283 if (status != 0) 284 return(EIO); 285 286 return(0); 287 } 288 289 /******************************************************************************** 290 * Schedule all possible devices for a rescan. 291 * 292 */ 293 static void 294 mly_scan_devices(struct mly_softc *sc) 295 { 296 int bus, target, nchn; 297 298 debug_called(1); 299 300 /* 301 * Clear any previous BTL information. 302 */ 303 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 304 305 /* 306 * Mark all devices as requiring a rescan, and let the early periodic scan collect them. 307 */ 308 nchn = sc->mly_controllerinfo->physical_channels_present + 309 sc->mly_controllerinfo->virtual_channels_present; 310 for (bus = 0; bus < nchn; bus++) 311 for (target = 0; target < MLY_MAX_TARGETS; target++) 312 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 313 314 } 315 316 /******************************************************************************** 317 * Rescan a device, possibly as a consequence of getting an event which suggests 318 * that it may have changed. 319 */ 320 static void 321 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 322 { 323 struct mly_command *mc; 324 struct mly_command_ioctl *mci; 325 326 debug_called(2); 327 328 /* get a command */ 329 mc = NULL; 330 if (mly_alloc_command(sc, &mc)) 331 return; /* we'll be retried soon */ 332 333 /* set up the data buffer */ 334 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT)) == NULL) { 335 mly_release_command(mc); 336 return; /* we'll get retried the next time a command completes */ 337 } 338 bzero(mc->mc_data, sizeof(union mly_devinfo)); 339 mc->mc_flags |= MLY_CMD_DATAIN; 340 mc->mc_complete = mly_complete_rescan; 341 342 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; 343 344 /* 345 * Build the ioctl. 346 * 347 * At this point we are committed to sending this request, as it 348 * will be the only one constructed for this particular update. 349 */ 350 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 351 mci->opcode = MDACMD_IOCTL; 352 mci->addr.phys.controller = 0; 353 mci->timeout.value = 30; 354 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 355 if (bus >= sc->mly_controllerinfo->physical_channels_present) { 356 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 357 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 358 mci->addr.log.logdev = ((bus - sc->mly_controllerinfo->physical_channels_present) * MLY_MAX_TARGETS) 359 + target; 360 debug(2, "logical device %d", mci->addr.log.logdev); 361 } else { 362 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 363 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 364 mci->addr.phys.lun = 0; 365 mci->addr.phys.target = target; 366 mci->addr.phys.channel = bus; 367 debug(2, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 368 } 369 370 /* 371 * Use the ready queue to get this command dispatched. 372 */ 373 mly_enqueue_ready(mc); 374 mly_startio(sc); 375 } 376 377 /******************************************************************************** 378 * Handle the completion of a rescan operation 379 */ 380 static void 381 mly_complete_rescan(struct mly_command *mc) 382 { 383 struct mly_softc *sc = mc->mc_sc; 384 struct mly_ioctl_getlogdevinfovalid *ldi; 385 struct mly_ioctl_getphysdevinfovalid *pdi; 386 int bus, target; 387 388 debug_called(2); 389 390 /* iff the command completed OK, we should use the result to update our data */ 391 if (mc->mc_status == 0) { 392 if (mc->mc_length == sizeof(*ldi)) { 393 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 394 bus = MLY_LOGDEV_BUS(sc, ldi->logical_device_number); 395 target = MLY_LOGDEV_TARGET(ldi->logical_device_number); 396 sc->mly_btl[bus][target].mb_flags = MLY_BTL_LOGICAL; /* clears all other flags */ 397 sc->mly_btl[bus][target].mb_type = ldi->raid_level; 398 sc->mly_btl[bus][target].mb_state = ldi->state; 399 debug(2, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 400 mly_describe_code(mly_table_device_type, ldi->raid_level), 401 mly_describe_code(mly_table_device_state, ldi->state)); 402 } else if (mc->mc_length == sizeof(*pdi)) { 403 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 404 bus = pdi->channel; 405 target = pdi->target; 406 sc->mly_btl[bus][target].mb_flags = MLY_BTL_PHYSICAL; /* clears all other flags */ 407 sc->mly_btl[bus][target].mb_type = MLY_DEVICE_TYPE_PHYSICAL; 408 sc->mly_btl[bus][target].mb_state = pdi->state; 409 sc->mly_btl[bus][target].mb_speed = pdi->speed; 410 sc->mly_btl[bus][target].mb_width = pdi->width; 411 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 412 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 413 debug(2, "BTL rescan for %d:%d returns %s", bus, target, 414 mly_describe_code(mly_table_device_state, pdi->state)); 415 } else { 416 mly_printf(sc, "BTL rescan result corrupted\n"); 417 } 418 } else { 419 /* 420 * A request sent for a device beyond the last device present will fail. 421 * We don't care about this, so we do nothing about it. 422 */ 423 } 424 free(mc->mc_data, M_DEVBUF); 425 mly_release_command(mc); 426 } 427 428 /******************************************************************************** 429 * Get the current health status and set the 'next event' counter to suit. 430 */ 431 static int 432 mly_get_eventstatus(struct mly_softc *sc) 433 { 434 struct mly_command_ioctl mci; 435 struct mly_health_status *mh; 436 u_int8_t status; 437 int error; 438 439 /* build the gethealthstatus ioctl and send it */ 440 bzero(&mci, sizeof(mci)); 441 mh = NULL; 442 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 443 444 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 445 return(error); 446 if (status != 0) 447 return(EIO); 448 449 /* get the event counter */ 450 sc->mly_event_change = mh->change_counter; 451 sc->mly_event_waiting = mh->next_event; 452 sc->mly_event_counter = mh->next_event; 453 454 /* save the health status into the memory mailbox */ 455 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 456 457 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 458 459 free(mh, M_DEVBUF); 460 return(0); 461 } 462 463 /******************************************************************************** 464 * Enable the memory mailbox mode. 465 */ 466 static int 467 mly_enable_mmbox(struct mly_softc *sc) 468 { 469 struct mly_command_ioctl mci; 470 u_int8_t *sp, status; 471 int error; 472 473 debug_called(1); 474 475 /* build the ioctl and send it */ 476 bzero(&mci, sizeof(mci)); 477 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 478 /* set buffer addresses */ 479 mci.param.setmemorymailbox.command_mailbox_physaddr = 480 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 481 mci.param.setmemorymailbox.status_mailbox_physaddr = 482 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 483 mci.param.setmemorymailbox.health_buffer_physaddr = 484 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 485 486 /* set buffer sizes - abuse of data_size field is revolting */ 487 sp = (u_int8_t *)&mci.data_size; 488 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 489 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 490 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 491 492 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 493 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 494 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 495 mci.param.setmemorymailbox.health_buffer_physaddr, 496 mci.param.setmemorymailbox.health_buffer_size); 497 498 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 499 return(error); 500 if (status != 0) 501 return(EIO); 502 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 503 debug(1, "memory mailbox active"); 504 return(0); 505 } 506 507 /******************************************************************************** 508 * Flush all pending I/O from the controller. 509 */ 510 static int 511 mly_flush(struct mly_softc *sc) 512 { 513 struct mly_command_ioctl mci; 514 u_int8_t status; 515 int error; 516 517 debug_called(1); 518 519 /* build the ioctl */ 520 bzero(&mci, sizeof(mci)); 521 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 522 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 523 524 /* pass it off to the controller */ 525 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 526 return(error); 527 528 return((status == 0) ? 0 : EIO); 529 } 530 531 /******************************************************************************** 532 * Perform an ioctl command. 533 * 534 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 535 * the command requires data transfer from the controller, and we will allocate 536 * a buffer for it. If (*data) is not NULL, the command requires data transfer 537 * to the controller. 538 * 539 * XXX passing in the whole ioctl structure is ugly. Better ideas? 540 * 541 * XXX we don't even try to handle the case where datasize > 4k. We should. 542 */ 543 static int 544 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 545 u_int8_t *status, void *sense_buffer, size_t *sense_length) 546 { 547 struct mly_command *mc; 548 struct mly_command_ioctl *mci; 549 int error; 550 551 debug_called(1); 552 553 mc = NULL; 554 if (mly_alloc_command(sc, &mc)) { 555 error = ENOMEM; 556 goto out; 557 } 558 559 /* copy the ioctl structure, but save some important fields and then fixup */ 560 mci = &mc->mc_packet->ioctl; 561 ioctl->sense_buffer_address = mci->sense_buffer_address; 562 ioctl->maximum_sense_size = mci->maximum_sense_size; 563 *mci = *ioctl; 564 mci->opcode = MDACMD_IOCTL; 565 mci->timeout.value = 30; 566 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 567 568 /* handle the data buffer */ 569 if (data != NULL) { 570 if (*data == NULL) { 571 /* allocate data buffer */ 572 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) { 573 error = ENOMEM; 574 goto out; 575 } 576 mc->mc_flags |= MLY_CMD_DATAIN; 577 } else { 578 mc->mc_data = *data; 579 mc->mc_flags |= MLY_CMD_DATAOUT; 580 } 581 mc->mc_length = datasize; 582 mc->mc_packet->generic.data_size = datasize; 583 } 584 585 /* run the command */ 586 if ((error = mly_immediate_command(mc))) 587 goto out; 588 589 /* clean up and return any data */ 590 *status = mc->mc_status; 591 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 592 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 593 *sense_length = mc->mc_sense; 594 goto out; 595 } 596 597 /* should we return a data pointer? */ 598 if ((data != NULL) && (*data == NULL)) 599 *data = mc->mc_data; 600 601 /* command completed OK */ 602 error = 0; 603 604 out: 605 if (mc != NULL) { 606 /* do we need to free a data buffer we allocated? */ 607 if (error && (mc->mc_data != NULL) && (*data == NULL)) 608 free(mc->mc_data, M_DEVBUF); 609 mly_release_command(mc); 610 } 611 return(error); 612 } 613 614 /******************************************************************************** 615 * Fetch one event from the controller. 616 */ 617 static void 618 mly_fetch_event(struct mly_softc *sc) 619 { 620 struct mly_command *mc; 621 struct mly_command_ioctl *mci; 622 int s; 623 u_int32_t event; 624 625 debug_called(2); 626 627 /* get a command */ 628 mc = NULL; 629 if (mly_alloc_command(sc, &mc)) 630 return; /* we'll get retried the next time a command completes */ 631 632 /* set up the data buffer */ 633 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT)) == NULL) { 634 mly_release_command(mc); 635 return; /* we'll get retried the next time a command completes */ 636 } 637 bzero(mc->mc_data, sizeof(struct mly_event)); 638 mc->mc_length = sizeof(struct mly_event); 639 mc->mc_flags |= MLY_CMD_DATAIN; 640 mc->mc_complete = mly_complete_event; 641 642 /* 643 * Get an event number to fetch. It's possible that we've raced with another 644 * context for the last event, in which case there will be no more events. 645 */ 646 s = splcam(); 647 if (sc->mly_event_counter == sc->mly_event_waiting) { 648 mly_release_command(mc); 649 splx(s); 650 return; 651 } 652 event = sc->mly_event_counter++; 653 splx(s); 654 655 /* 656 * Build the ioctl. 657 * 658 * At this point we are committed to sending this request, as it 659 * will be the only one constructed for this particular event number. 660 */ 661 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 662 mci->opcode = MDACMD_IOCTL; 663 mci->data_size = sizeof(struct mly_event); 664 mci->addr.phys.lun = (event >> 16) & 0xff; 665 mci->addr.phys.target = (event >> 24) & 0xff; 666 mci->addr.phys.channel = 0; 667 mci->addr.phys.controller = 0; 668 mci->timeout.value = 30; 669 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 670 mci->sub_ioctl = MDACIOCTL_GETEVENT; 671 mci->param.getevent.sequence_number_low = event & 0xffff; 672 673 debug(2, "fetch event %u", event); 674 675 /* 676 * Use the ready queue to get this command dispatched. 677 */ 678 mly_enqueue_ready(mc); 679 mly_startio(sc); 680 } 681 682 /******************************************************************************** 683 * Handle the completion of an event poll. 684 * 685 * Note that we don't actually have to instigate another poll; the completion of 686 * this command will trigger that if there are any more events to poll for. 687 */ 688 static void 689 mly_complete_event(struct mly_command *mc) 690 { 691 struct mly_softc *sc = mc->mc_sc; 692 struct mly_event *me = (struct mly_event *)mc->mc_data; 693 694 debug_called(2); 695 696 /* 697 * If the event was successfully fetched, process it. 698 */ 699 if (mc->mc_status == SCSI_STATUS_OK) { 700 mly_process_event(sc, me); 701 free(me, M_DEVBUF); 702 } 703 mly_release_command(mc); 704 } 705 706 /******************************************************************************** 707 * Process a controller event. 708 */ 709 static void 710 mly_process_event(struct mly_softc *sc, struct mly_event *me) 711 { 712 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 713 char *fp, *tp; 714 int bus, target, event, class, action; 715 716 /* 717 * Errors can be reported using vendor-unique sense data. In this case, the 718 * event code will be 0x1c (Request sense data present), the sense key will 719 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 720 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 721 * and low seven bits of the ASC (low seven bits of the high byte). 722 */ 723 if ((me->code == 0x1c) && 724 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 725 (ssd->add_sense_code & 0x80)) { 726 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 727 } else { 728 event = me->code; 729 } 730 731 /* look up event, get codes */ 732 fp = mly_describe_code(mly_table_event, event); 733 734 debug(2, "Event %d code 0x%x", me->sequence_number, me->code); 735 736 /* quiet event? */ 737 class = fp[0]; 738 if (isupper(class) && bootverbose) 739 class = tolower(class); 740 741 /* get action code, text string */ 742 action = fp[1]; 743 tp = &fp[2]; 744 745 /* 746 * Print some information about the event. 747 * 748 * This code uses a table derived from the corresponding portion of the Linux 749 * driver, and thus the parser is very similar. 750 */ 751 switch(class) { 752 case 'p': /* error on physical device */ 753 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 754 if (action == 'r') 755 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 756 break; 757 case 'l': /* error on logical unit */ 758 case 'm': /* message about logical unit */ 759 bus = MLY_LOGDEV_BUS(sc, me->lun); 760 target = MLY_LOGDEV_TARGET(me->lun); 761 mly_name_device(sc, bus, target); 762 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 763 if (action == 'r') 764 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 765 break; 766 break; 767 case 's': /* report of sense data */ 768 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 769 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 770 (ssd->add_sense_code == 0x04) && 771 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 772 break; /* ignore NO_SENSE or NOT_READY in one case */ 773 774 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 775 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 776 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 777 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 778 if (action == 'r') 779 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 780 break; 781 case 'e': 782 mly_printf(sc, tp, me->target, me->lun); 783 break; 784 case 'c': 785 mly_printf(sc, "controller %s\n", tp); 786 break; 787 case '?': 788 mly_printf(sc, "%s - %d\n", tp, me->code); 789 break; 790 default: /* probably a 'noisy' event being ignored */ 791 break; 792 } 793 } 794 795 /******************************************************************************** 796 * Perform periodic activities. 797 */ 798 static void 799 mly_periodic(void *data) 800 { 801 struct mly_softc *sc = (struct mly_softc *)data; 802 int nchn, bus, target; 803 804 debug_called(2); 805 806 /* 807 * Scan devices. 808 */ 809 nchn = sc->mly_controllerinfo->physical_channels_present + 810 sc->mly_controllerinfo->virtual_channels_present; 811 for (bus = 0; bus < nchn; bus++) { 812 for (target = 0; target < MLY_MAX_TARGETS; target++) { 813 814 /* ignore the controller in this scan */ 815 if (target == sc->mly_controllerparam->initiator_id) 816 continue; 817 818 /* perform device rescan? */ 819 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 820 mly_rescan_btl(sc, bus, target); 821 } 822 } 823 824 sc->mly_periodic = timeout(mly_periodic, sc, hz); 825 } 826 827 /******************************************************************************** 828 ******************************************************************************** 829 Command Processing 830 ******************************************************************************** 831 ********************************************************************************/ 832 833 /******************************************************************************** 834 * Run a command and wait for it to complete. 835 * 836 */ 837 static int 838 mly_immediate_command(struct mly_command *mc) 839 { 840 struct mly_softc *sc = mc->mc_sc; 841 int error, s; 842 843 debug_called(2); 844 845 /* spinning at splcam is ugly, but we're only used during controller init */ 846 s = splcam(); 847 if ((error = mly_start(mc))) 848 return(error); 849 850 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 851 /* sleep on the command */ 852 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 853 tsleep(mc, 0, "mlywait", 0); 854 } 855 } else { 856 /* spin and collect status while we do */ 857 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 858 mly_done(mc->mc_sc); 859 } 860 } 861 splx(s); 862 return(0); 863 } 864 865 /******************************************************************************** 866 * Start as much queued I/O as possible on the controller 867 */ 868 void 869 mly_startio(struct mly_softc *sc) 870 { 871 struct mly_command *mc; 872 873 debug_called(2); 874 875 for (;;) { 876 877 /* try for a ready command */ 878 mc = mly_dequeue_ready(sc); 879 880 /* try to build a command from a queued ccb */ 881 if (!mc) 882 mly_cam_command(sc, &mc); 883 884 /* no command == nothing to do */ 885 if (!mc) 886 break; 887 888 /* try to post the command */ 889 if (mly_start(mc)) { 890 /* controller busy, or no resources - defer for later */ 891 mly_requeue_ready(mc); 892 break; 893 } 894 } 895 } 896 897 /******************************************************************************** 898 * Deliver a command to the controller; allocate controller resources at the 899 * last moment. 900 */ 901 static int 902 mly_start(struct mly_command *mc) 903 { 904 struct mly_softc *sc = mc->mc_sc; 905 union mly_command_packet *pkt; 906 int s; 907 908 debug_called(2); 909 910 /* 911 * Set the command up for delivery to the controller. 912 */ 913 mly_map_command(mc); 914 mc->mc_packet->generic.command_id = mc->mc_slot; 915 916 s = splcam(); 917 918 /* 919 * Do we have to use the hardware mailbox? 920 */ 921 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 922 /* 923 * Check to see if the controller is ready for us. 924 */ 925 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 926 splx(s); 927 return(EBUSY); 928 } 929 mc->mc_flags |= MLY_CMD_BUSY; 930 931 /* 932 * It's ready, send the command. 933 */ 934 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 935 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 936 937 } else { /* use memory-mailbox mode */ 938 939 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 940 941 /* check to see if the next index is free yet */ 942 if (pkt->mmbox.flag != 0) { 943 splx(s); 944 return(EBUSY); 945 } 946 mc->mc_flags |= MLY_CMD_BUSY; 947 948 /* copy in new command */ 949 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 950 /* barrier to ensure completion of previous write before we write the flag */ 951 bus_space_barrier(NULL, NULL, 0, 0, BUS_SPACE_BARRIER_WRITE); /* tag/handle? */ 952 /* copy flag last */ 953 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 954 /* barrier to ensure completion of previous write before we notify the controller */ 955 bus_space_barrier(NULL, NULL, 0, 0, BUS_SPACE_BARRIER_WRITE); /* tag/handle */ 956 957 /* signal controller, update index */ 958 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 959 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 960 } 961 962 mly_enqueue_busy(mc); 963 splx(s); 964 return(0); 965 } 966 967 /******************************************************************************** 968 * Pick up command status from the controller, schedule a completion event 969 */ 970 void 971 mly_done(struct mly_softc *sc) 972 { 973 struct mly_command *mc; 974 union mly_status_packet *sp; 975 u_int16_t slot; 976 int s, worked; 977 978 s = splcam(); 979 worked = 0; 980 981 /* pick up hardware-mailbox commands */ 982 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 983 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 984 if (slot < MLY_SLOT_MAX) { 985 mc = &sc->mly_command[slot - MLY_SLOT_START]; 986 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 987 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 988 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 989 mly_remove_busy(mc); 990 mc->mc_flags &= ~MLY_CMD_BUSY; 991 mly_enqueue_complete(mc); 992 worked = 1; 993 } else { 994 /* slot 0xffff may mean "extremely bogus command" */ 995 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 996 } 997 /* unconditionally acknowledge status */ 998 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 999 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1000 } 1001 1002 /* pick up memory-mailbox commands */ 1003 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1004 for (;;) { 1005 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1006 1007 /* check for more status */ 1008 if (sp->mmbox.flag == 0) 1009 break; 1010 1011 /* get slot number */ 1012 slot = sp->status.command_id; 1013 if (slot < MLY_SLOT_MAX) { 1014 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1015 mc->mc_status = sp->status.status; 1016 mc->mc_sense = sp->status.sense_length; 1017 mc->mc_resid = sp->status.residue; 1018 mly_remove_busy(mc); 1019 mc->mc_flags &= ~MLY_CMD_BUSY; 1020 mly_enqueue_complete(mc); 1021 worked = 1; 1022 } else { 1023 /* slot 0xffff may mean "extremely bogus command" */ 1024 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1025 slot, sc->mly_mmbox_status_index); 1026 } 1027 1028 /* clear and move to next index */ 1029 sp->mmbox.flag = 0; 1030 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1031 } 1032 /* acknowledge that we have collected status value(s) */ 1033 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1034 } 1035 1036 splx(s); 1037 if (worked) { 1038 #if defined(__FreeBSD__) && __FreeBSD_version >= 500005 1039 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1040 taskqueue_enqueue(taskqueue_swi, &sc->mly_task_complete); 1041 else 1042 #endif 1043 mly_complete(sc, 0); 1044 } 1045 } 1046 1047 /******************************************************************************** 1048 * Process completed commands 1049 */ 1050 static void 1051 mly_complete(void *context, int pending) 1052 { 1053 struct mly_softc *sc = (struct mly_softc *)context; 1054 struct mly_command *mc; 1055 void (* mc_complete)(struct mly_command *mc); 1056 1057 1058 debug_called(2); 1059 1060 /* 1061 * Spin pulling commands off the completed queue and processing them. 1062 */ 1063 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1064 1065 /* 1066 * Free controller resources, mark command complete. 1067 * 1068 * Note that as soon as we mark the command complete, it may be freed 1069 * out from under us, so we need to save the mc_complete field in 1070 * order to later avoid dereferencing mc. (We would not expect to 1071 * have a polling/sleeping consumer with mc_complete != NULL). 1072 */ 1073 mly_unmap_command(mc); 1074 mc_complete = mc->mc_complete; 1075 mc->mc_flags |= MLY_CMD_COMPLETE; 1076 1077 /* 1078 * Call completion handler or wake up sleeping consumer. 1079 */ 1080 if (mc_complete != NULL) { 1081 mc_complete(mc); 1082 } else { 1083 wakeup(mc); 1084 } 1085 } 1086 1087 /* 1088 * We may have freed up controller resources which would allow us 1089 * to push more commands onto the controller, so we check here. 1090 */ 1091 mly_startio(sc); 1092 1093 /* 1094 * The controller may have updated the health status information, 1095 * so check for it here. 1096 * 1097 * Note that we only check for health status after a completed command. It 1098 * might be wise to ping the controller occasionally if it's been idle for 1099 * a while just to check up on it. While a filesystem is mounted, or I/O is 1100 * active this isn't really an issue. 1101 */ 1102 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1103 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1104 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1105 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1106 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1107 1108 /* wake up anyone that might be interested in this */ 1109 wakeup(&sc->mly_event_change); 1110 } 1111 if (sc->mly_event_counter != sc->mly_event_waiting) 1112 mly_fetch_event(sc); 1113 } 1114 1115 /******************************************************************************** 1116 ******************************************************************************** 1117 Command Buffer Management 1118 ******************************************************************************** 1119 ********************************************************************************/ 1120 1121 /******************************************************************************** 1122 * Allocate a command. 1123 */ 1124 int 1125 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1126 { 1127 struct mly_command *mc; 1128 1129 debug_called(3); 1130 1131 if ((mc = mly_dequeue_free(sc)) == NULL) 1132 return(ENOMEM); 1133 1134 *mcp = mc; 1135 return(0); 1136 } 1137 1138 /******************************************************************************** 1139 * Release a command back to the freelist. 1140 */ 1141 void 1142 mly_release_command(struct mly_command *mc) 1143 { 1144 debug_called(3); 1145 1146 /* 1147 * Fill in parts of the command that may cause confusion if 1148 * a consumer doesn't when we are later allocated. 1149 */ 1150 mc->mc_data = NULL; 1151 mc->mc_flags = 0; 1152 mc->mc_complete = NULL; 1153 mc->mc_private = NULL; 1154 1155 /* 1156 * By default, we set up to overwrite the command packet with 1157 * sense information. 1158 */ 1159 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1160 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1161 1162 mly_enqueue_free(mc); 1163 } 1164 1165 /******************************************************************************** 1166 * Map helper for command allocation. 1167 */ 1168 static void 1169 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1170 { 1171 struct mly_softc *sc = (struct mly_softc *)arg 1172 1173 debug_called(2); 1174 1175 sc->mly_packetphys = segs[0].ds_addr; 1176 } 1177 1178 /******************************************************************************** 1179 * Allocate and initialise command and packet structures. 1180 */ 1181 static int 1182 mly_alloc_commands(struct mly_softc *sc) 1183 { 1184 struct mly_command *mc; 1185 int i; 1186 1187 /* 1188 * Allocate enough space for all the command packets in one chunk and 1189 * map them permanently into controller-visible space. 1190 */ 1191 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1192 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1193 return(ENOMEM); 1194 } 1195 bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1196 MLY_MAXCOMMANDS * sizeof(union mly_command_packet), 1197 mly_alloc_commands_map, sc, 0); 1198 1199 for (i = 0; i < MLY_MAXCOMMANDS; i++) { 1200 mc = &sc->mly_command[i]; 1201 bzero(mc, sizeof(*mc)); 1202 mc->mc_sc = sc; 1203 mc->mc_slot = MLY_SLOT_START + i; 1204 mc->mc_packet = sc->mly_packet + i; 1205 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1206 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1207 mly_release_command(mc); 1208 } 1209 return(0); 1210 } 1211 1212 /******************************************************************************** 1213 * Command-mapping helper function - populate this command's s/g table 1214 * with the s/g entries for its data. 1215 */ 1216 static void 1217 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1218 { 1219 struct mly_command *mc = (struct mly_command *)arg; 1220 struct mly_softc *sc = mc->mc_sc; 1221 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1222 struct mly_sg_entry *sg; 1223 int i, tabofs; 1224 1225 debug_called(3); 1226 1227 /* can we use the transfer structure directly? */ 1228 if (nseg <= 2) { 1229 sg = &gen->transfer.direct.sg[0]; 1230 gen->command_control.extended_sg_table = 0; 1231 } else { 1232 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAXSGENTRIES); 1233 sg = sc->mly_sg_table + tabofs; 1234 gen->transfer.indirect.entries[0] = nseg; 1235 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1236 gen->command_control.extended_sg_table = 1; 1237 } 1238 1239 /* copy the s/g table */ 1240 for (i = 0; i < nseg; i++) { 1241 sg[i].physaddr = segs[i].ds_addr; 1242 sg[i].length = segs[i].ds_len; 1243 } 1244 1245 } 1246 1247 #if 0 1248 /******************************************************************************** 1249 * Command-mapping helper function - save the cdb's physical address. 1250 * 1251 * We don't support 'large' SCSI commands at this time, so this is unused. 1252 */ 1253 static void 1254 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1255 { 1256 struct mly_command *mc = (struct mly_command *)arg; 1257 1258 debug_called(3); 1259 1260 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1261 if ((segs[0].ds_addr % PAGE_SIZE) > 1262 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1263 panic("cdb crosses page boundary"); 1264 1265 /* fix up fields in the command packet */ 1266 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1267 } 1268 #endif 1269 1270 /******************************************************************************** 1271 * Map a command into controller-visible space 1272 */ 1273 static void 1274 mly_map_command(struct mly_command *mc) 1275 { 1276 struct mly_softc *sc = mc->mc_sc; 1277 1278 debug_called(2); 1279 1280 /* don't map more than once */ 1281 if (mc->mc_flags & MLY_CMD_MAPPED) 1282 return; 1283 1284 /* does the command have a data buffer? */ 1285 if (mc->mc_data != NULL) 1286 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1287 mly_map_command_sg, mc, 0); 1288 1289 if (mc->mc_flags & MLY_CMD_DATAIN) 1290 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1291 if (mc->mc_flags & MLY_CMD_DATAOUT) 1292 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1293 1294 mc->mc_flags |= MLY_CMD_MAPPED; 1295 } 1296 1297 /******************************************************************************** 1298 * Unmap a command from controller-visible space 1299 */ 1300 static void 1301 mly_unmap_command(struct mly_command *mc) 1302 { 1303 struct mly_softc *sc = mc->mc_sc; 1304 1305 debug_called(2); 1306 1307 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1308 return; 1309 1310 if (mc->mc_flags & MLY_CMD_DATAIN) 1311 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1312 if (mc->mc_flags & MLY_CMD_DATAOUT) 1313 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1314 1315 /* does the command have a data buffer? */ 1316 if (mc->mc_data != NULL) 1317 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1318 1319 mc->mc_flags &= ~MLY_CMD_MAPPED; 1320 } 1321 1322 /******************************************************************************** 1323 ******************************************************************************** 1324 Hardware Control 1325 ******************************************************************************** 1326 ********************************************************************************/ 1327 1328 /******************************************************************************** 1329 * Handshake with the firmware while the card is being initialised. 1330 */ 1331 static int 1332 mly_fwhandshake(struct mly_softc *sc) 1333 { 1334 u_int8_t error, param0, param1; 1335 int spinup = 0; 1336 1337 debug_called(1); 1338 1339 /* set HM_STSACK and let the firmware initialise */ 1340 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1341 DELAY(1000); /* too short? */ 1342 1343 /* if HM_STSACK is still true, the controller is initialising */ 1344 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 1345 return(0); 1346 mly_printf(sc, "controller initialisation started\n"); 1347 1348 /* spin waiting for initialisation to finish, or for a message to be delivered */ 1349 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 1350 /* check for a message */ 1351 if (MLY_ERROR_VALID(sc)) { 1352 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 1353 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 1354 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 1355 1356 switch(error) { 1357 case MLY_MSG_SPINUP: 1358 if (!spinup) { 1359 mly_printf(sc, "drive spinup in progress\n"); 1360 spinup = 1; /* only print this once (should print drive being spun?) */ 1361 } 1362 break; 1363 case MLY_MSG_RACE_RECOVERY_FAIL: 1364 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 1365 break; 1366 case MLY_MSG_RACE_IN_PROGRESS: 1367 mly_printf(sc, "mirror race recovery in progress\n"); 1368 break; 1369 case MLY_MSG_RACE_ON_CRITICAL: 1370 mly_printf(sc, "mirror race recovery on a critical drive\n"); 1371 break; 1372 case MLY_MSG_PARITY_ERROR: 1373 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 1374 return(ENXIO); 1375 default: 1376 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 1377 } 1378 } 1379 } 1380 return(0); 1381 } 1382 1383 /******************************************************************************** 1384 ******************************************************************************** 1385 Debugging and Diagnostics 1386 ******************************************************************************** 1387 ********************************************************************************/ 1388 1389 /******************************************************************************** 1390 * Print some information about the controller. 1391 */ 1392 static void 1393 mly_describe_controller(struct mly_softc *sc) 1394 { 1395 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 1396 1397 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 1398 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 1399 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 1400 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 1401 mi->memory_size); 1402 1403 if (bootverbose) { 1404 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 1405 mly_describe_code(mly_table_oemname, mi->oem_information), 1406 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 1407 mi->interface_speed, mi->interface_width, mi->interface_name); 1408 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 1409 mi->memory_size, mi->memory_speed, mi->memory_width, 1410 mly_describe_code(mly_table_memorytype, mi->memory_type), 1411 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 1412 mi->cache_size); 1413 mly_printf(sc, "CPU: %s @ %dMHZ\n", 1414 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 1415 if (mi->l2cache_size != 0) 1416 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 1417 if (mi->exmemory_size != 0) 1418 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 1419 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 1420 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 1421 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 1422 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 1423 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 1424 mi->maximum_block_count, mi->maximum_sg_entries); 1425 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 1426 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 1427 mly_printf(sc, "physical devices present %d\n", 1428 mi->physical_devices_present); 1429 mly_printf(sc, "physical disks present/offline %d/%d\n", 1430 mi->physical_disks_present, mi->physical_disks_offline); 1431 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 1432 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 1433 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 1434 mi->virtual_channels_possible); 1435 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 1436 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 1437 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 1438 } 1439 } 1440 1441 #ifdef MLY_DEBUG 1442 /******************************************************************************** 1443 * Print some controller state 1444 */ 1445 static void 1446 mly_printstate(struct mly_softc *sc) 1447 { 1448 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 1449 MLY_GET_REG(sc, sc->mly_idbr), 1450 MLY_GET_REG(sc, sc->mly_odbr), 1451 MLY_GET_REG(sc, sc->mly_error_status), 1452 sc->mly_idbr, 1453 sc->mly_odbr, 1454 sc->mly_error_status); 1455 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 1456 MLY_GET_REG(sc, sc->mly_interrupt_mask), 1457 MLY_GET_REG(sc, sc->mly_interrupt_status)); 1458 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 1459 MLY_GET_REG(sc, sc->mly_command_mailbox), 1460 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 1461 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 1462 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 1463 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 1464 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 1465 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 1466 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 1467 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 1468 MLY_GET_REG(sc, sc->mly_status_mailbox), 1469 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 1470 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 1471 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 1472 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 1473 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 1474 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 1475 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 1476 mly_printf(sc, " %04x %08x\n", 1477 MLY_GET_REG2(sc, sc->mly_status_mailbox), 1478 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 1479 } 1480 1481 struct mly_softc *mly_softc0 = NULL; 1482 void 1483 mly_printstate0(void) 1484 { 1485 if (mly_softc0 != NULL) 1486 mly_printstate(mly_softc0); 1487 } 1488 1489 /******************************************************************************** 1490 * Print a command 1491 */ 1492 static void 1493 mly_print_command(struct mly_command *mc) 1494 { 1495 struct mly_softc *sc = mc->mc_sc; 1496 1497 mly_printf(sc, "COMMAND @ %p\n", mc); 1498 mly_printf(sc, " slot %d\n", mc->mc_slot); 1499 mly_printf(sc, " status 0x%x\n", mc->mc_status); 1500 mly_printf(sc, " sense len %d\n", mc->mc_sense); 1501 mly_printf(sc, " resid %d\n", mc->mc_resid); 1502 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 1503 if (mc->mc_packet != NULL) 1504 mly_print_packet(mc); 1505 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 1506 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 1507 mly_printf(sc, " complete %p\n", mc->mc_complete); 1508 mly_printf(sc, " private %p\n", mc->mc_private); 1509 } 1510 1511 /******************************************************************************** 1512 * Print a command packet 1513 */ 1514 static void 1515 mly_print_packet(struct mly_command *mc) 1516 { 1517 struct mly_softc *sc = mc->mc_sc; 1518 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 1519 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 1520 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 1521 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 1522 int transfer; 1523 1524 mly_printf(sc, " command_id %d\n", ge->command_id); 1525 mly_printf(sc, " opcode %d\n", ge->opcode); 1526 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 1527 ge->command_control.force_unit_access, 1528 ge->command_control.disable_page_out, 1529 ge->command_control.extended_sg_table, 1530 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 1531 ge->command_control.no_auto_sense, 1532 ge->command_control.disable_disconnect); 1533 mly_printf(sc, " data_size %d\n", ge->data_size); 1534 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 1535 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 1536 mly_printf(sc, " target %d\n", ge->addr.phys.target); 1537 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 1538 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 1539 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 1540 mly_printf(sc, " timeout %d %s\n", 1541 ge->timeout.value, 1542 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 1543 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 1544 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 1545 switch(ge->opcode) { 1546 case MDACMD_SCSIPT: 1547 case MDACMD_SCSI: 1548 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 1549 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 1550 transfer = 1; 1551 break; 1552 case MDACMD_SCSILC: 1553 case MDACMD_SCSILCPT: 1554 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 1555 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 1556 transfer = 1; 1557 break; 1558 case MDACMD_IOCTL: 1559 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 1560 switch(io->sub_ioctl) { 1561 case MDACIOCTL_SETMEMORYMAILBOX: 1562 mly_printf(sc, " health_buffer_size %d\n", 1563 io->param.setmemorymailbox.health_buffer_size); 1564 mly_printf(sc, " health_buffer_phys 0x%llx\n", 1565 io->param.setmemorymailbox.health_buffer_physaddr); 1566 mly_printf(sc, " command_mailbox 0x%llx\n", 1567 io->param.setmemorymailbox.command_mailbox_physaddr); 1568 mly_printf(sc, " status_mailbox 0x%llx\n", 1569 io->param.setmemorymailbox.status_mailbox_physaddr); 1570 transfer = 0; 1571 break; 1572 1573 case MDACIOCTL_SETREALTIMECLOCK: 1574 case MDACIOCTL_GETHEALTHSTATUS: 1575 case MDACIOCTL_GETCONTROLLERINFO: 1576 case MDACIOCTL_GETLOGDEVINFOVALID: 1577 case MDACIOCTL_GETPHYSDEVINFOVALID: 1578 case MDACIOCTL_GETPHYSDEVSTATISTICS: 1579 case MDACIOCTL_GETLOGDEVSTATISTICS: 1580 case MDACIOCTL_GETCONTROLLERSTATISTICS: 1581 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 1582 case MDACIOCTL_CREATENEWCONF: 1583 case MDACIOCTL_ADDNEWCONF: 1584 case MDACIOCTL_GETDEVCONFINFO: 1585 case MDACIOCTL_GETFREESPACELIST: 1586 case MDACIOCTL_MORE: 1587 case MDACIOCTL_SETPHYSDEVPARAMETER: 1588 case MDACIOCTL_GETPHYSDEVPARAMETER: 1589 case MDACIOCTL_GETLOGDEVPARAMETER: 1590 case MDACIOCTL_SETLOGDEVPARAMETER: 1591 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 1592 transfer = 1; 1593 break; 1594 1595 case MDACIOCTL_GETEVENT: 1596 mly_printf(sc, " event %d\n", 1597 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 1598 transfer = 1; 1599 break; 1600 1601 case MDACIOCTL_SETRAIDDEVSTATE: 1602 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 1603 transfer = 0; 1604 break; 1605 1606 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 1607 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 1608 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 1609 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 1610 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 1611 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 1612 transfer = 0; 1613 break; 1614 1615 case MDACIOCTL_GETGROUPCONFINFO: 1616 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 1617 transfer = 1; 1618 break; 1619 1620 case MDACIOCTL_GET_SUBSYSTEM_DATA: 1621 case MDACIOCTL_SET_SUBSYSTEM_DATA: 1622 case MDACIOCTL_STARTDISOCVERY: 1623 case MDACIOCTL_INITPHYSDEVSTART: 1624 case MDACIOCTL_INITPHYSDEVSTOP: 1625 case MDACIOCTL_INITRAIDDEVSTART: 1626 case MDACIOCTL_INITRAIDDEVSTOP: 1627 case MDACIOCTL_REBUILDRAIDDEVSTART: 1628 case MDACIOCTL_REBUILDRAIDDEVSTOP: 1629 case MDACIOCTL_MAKECONSISTENTDATASTART: 1630 case MDACIOCTL_MAKECONSISTENTDATASTOP: 1631 case MDACIOCTL_CONSISTENCYCHECKSTART: 1632 case MDACIOCTL_CONSISTENCYCHECKSTOP: 1633 case MDACIOCTL_RESETDEVICE: 1634 case MDACIOCTL_FLUSHDEVICEDATA: 1635 case MDACIOCTL_PAUSEDEVICE: 1636 case MDACIOCTL_UNPAUSEDEVICE: 1637 case MDACIOCTL_LOCATEDEVICE: 1638 case MDACIOCTL_SETMASTERSLAVEMODE: 1639 case MDACIOCTL_DELETERAIDDEV: 1640 case MDACIOCTL_REPLACEINTERNALDEV: 1641 case MDACIOCTL_CLEARCONF: 1642 case MDACIOCTL_GETCONTROLLERPARAMETER: 1643 case MDACIOCTL_SETCONTRLLERPARAMETER: 1644 case MDACIOCTL_CLEARCONFSUSPMODE: 1645 case MDACIOCTL_STOREIMAGE: 1646 case MDACIOCTL_READIMAGE: 1647 case MDACIOCTL_FLASHIMAGES: 1648 case MDACIOCTL_RENAMERAIDDEV: 1649 default: /* no idea what to print */ 1650 transfer = 0; 1651 break; 1652 } 1653 break; 1654 1655 case MDACMD_IOCTLCHECK: 1656 case MDACMD_MEMCOPY: 1657 default: 1658 transfer = 0; 1659 break; /* print nothing */ 1660 } 1661 if (transfer) { 1662 if (ge->command_control.extended_sg_table) { 1663 mly_printf(sc, " sg table 0x%llx/%d\n", 1664 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 1665 } else { 1666 mly_printf(sc, " 0000 0x%llx/%lld\n", 1667 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 1668 mly_printf(sc, " 0001 0x%llx/%lld\n", 1669 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 1670 } 1671 } 1672 } 1673 1674 /******************************************************************************** 1675 * Panic in a slightly informative fashion 1676 */ 1677 static void 1678 mly_panic(struct mly_softc *sc, char *reason) 1679 { 1680 mly_printstate(sc); 1681 panic(reason); 1682 } 1683 #endif 1684 1685 /******************************************************************************** 1686 * Print queue statistics, callable from DDB. 1687 */ 1688 void 1689 mly_print_controller(int controller) 1690 { 1691 struct mly_softc *sc; 1692 1693 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 1694 printf("mly: controller %d invalid\n", controller); 1695 } else { 1696 device_printf(sc->mly_dev, "queue curr max\n"); 1697 device_printf(sc->mly_dev, "free %04d/%04d\n", 1698 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 1699 device_printf(sc->mly_dev, "ready %04d/%04d\n", 1700 sc->mly_qstat[MLYQ_READY].q_length, sc->mly_qstat[MLYQ_READY].q_max); 1701 device_printf(sc->mly_dev, "busy %04d/%04d\n", 1702 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 1703 device_printf(sc->mly_dev, "complete %04d/%04d\n", 1704 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 1705 } 1706 } 1707 1708 1709 /******************************************************************************** 1710 ******************************************************************************** 1711 Control device interface 1712 ******************************************************************************** 1713 ********************************************************************************/ 1714 1715 /******************************************************************************** 1716 * Accept an open operation on the control device. 1717 */ 1718 static int 1719 mly_user_open(dev_t dev, int flags, int fmt, d_thread_t *td) 1720 { 1721 int unit = minor(dev); 1722 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 1723 1724 sc->mly_state |= MLY_STATE_OPEN; 1725 return(0); 1726 } 1727 1728 /******************************************************************************** 1729 * Accept the last close on the control device. 1730 */ 1731 static int 1732 mly_user_close(dev_t dev, int flags, int fmt, d_thread_t *td) 1733 { 1734 int unit = minor(dev); 1735 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 1736 1737 sc->mly_state &= ~MLY_STATE_OPEN; 1738 return (0); 1739 } 1740 1741 /******************************************************************************** 1742 * Handle controller-specific control operations. 1743 */ 1744 static int 1745 mly_user_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *td) 1746 { 1747 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 1748 struct mly_user_command *uc = (struct mly_user_command *)addr; 1749 struct mly_user_health *uh = (struct mly_user_health *)addr; 1750 1751 switch(cmd) { 1752 case MLYIO_COMMAND: 1753 return(mly_user_command(sc, uc)); 1754 case MLYIO_HEALTH: 1755 return(mly_user_health(sc, uh)); 1756 default: 1757 return(ENOIOCTL); 1758 } 1759 } 1760 1761 /******************************************************************************** 1762 * Execute a command passed in from userspace. 1763 * 1764 * The control structure contains the actual command for the controller, as well 1765 * as the user-space data pointer and data size, and an optional sense buffer 1766 * size/pointer. On completion, the data size is adjusted to the command 1767 * residual, and the sense buffer size to the size of the returned sense data. 1768 * 1769 */ 1770 static int 1771 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 1772 { 1773 struct mly_command *mc; 1774 int error, s; 1775 1776 /* allocate a command */ 1777 if (mly_alloc_command(sc, &mc)) { 1778 error = ENOMEM; 1779 goto out; /* XXX Linux version will wait for a command */ 1780 } 1781 1782 /* handle data size/direction */ 1783 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 1784 if (mc->mc_length > 0) { 1785 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 1786 error = ENOMEM; 1787 goto out; 1788 } 1789 } 1790 if (uc->DataTransferLength > 0) { 1791 mc->mc_flags |= MLY_CMD_DATAIN; 1792 bzero(mc->mc_data, mc->mc_length); 1793 } 1794 if (uc->DataTransferLength < 0) { 1795 mc->mc_flags |= MLY_CMD_DATAOUT; 1796 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 1797 goto out; 1798 } 1799 1800 /* copy the controller command */ 1801 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 1802 1803 /* clear command completion handler so that we get woken up */ 1804 mc->mc_complete = NULL; 1805 1806 /* execute the command */ 1807 s = splcam(); 1808 mly_requeue_ready(mc); 1809 mly_startio(sc); 1810 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 1811 tsleep(mc, 0, "mlyioctl", 0); 1812 splx(s); 1813 1814 /* return the data to userspace */ 1815 if (uc->DataTransferLength > 0) 1816 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 1817 goto out; 1818 1819 /* return the sense buffer to userspace */ 1820 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 1821 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 1822 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 1823 goto out; 1824 } 1825 1826 /* return command results to userspace (caller will copy out) */ 1827 uc->DataTransferLength = mc->mc_resid; 1828 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 1829 uc->CommandStatus = mc->mc_status; 1830 error = 0; 1831 1832 out: 1833 if (mc->mc_data != NULL) 1834 free(mc->mc_data, M_DEVBUF); 1835 if (mc != NULL) 1836 mly_release_command(mc); 1837 return(error); 1838 } 1839 1840 /******************************************************************************** 1841 * Return health status to userspace. If the health change index in the user 1842 * structure does not match that currently exported by the controller, we 1843 * return the current status immediately. Otherwise, we block until either 1844 * interrupted or new status is delivered. 1845 */ 1846 static int 1847 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 1848 { 1849 struct mly_health_status mh; 1850 int error, s; 1851 1852 /* fetch the current health status from userspace */ 1853 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 1854 return(error); 1855 1856 /* spin waiting for a status update */ 1857 s = splcam(); 1858 error = EWOULDBLOCK; 1859 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 1860 error = tsleep(&sc->mly_event_change, PCATCH, "mlyhealth", 0); 1861 splx(s); 1862 1863 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 1864 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 1865 sizeof(uh->HealthStatusBuffer)); 1866 return(error); 1867 } 1868