1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2000, 2001 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/malloc.h> 35#include <sys/kernel.h> 36#include <sys/bus.h> 37#include <sys/conf.h> 38#include <sys/ctype.h> 39#include <sys/ioccom.h> 40#include <sys/stat.h> 41 42#include <machine/bus.h> 43#include <machine/resource.h> 44#include <sys/rman.h> 45 46#include <cam/cam.h> 47#include <cam/cam_ccb.h> 48#include <cam/cam_periph.h> 49#include <cam/cam_sim.h> 50#include <cam/cam_xpt_sim.h> 51#include <cam/scsi/scsi_all.h> 52#include <cam/scsi/scsi_message.h> 53 54#include <dev/pci/pcireg.h> 55#include <dev/pci/pcivar.h> 56 57#include <dev/mly/mlyreg.h> 58#include <dev/mly/mlyio.h> 59#include <dev/mly/mlyvar.h> 60#include <dev/mly/mly_tables.h> 61 62static int mly_probe(device_t dev); 63static int mly_attach(device_t dev); 64static int mly_pci_attach(struct mly_softc *sc); 65static int mly_detach(device_t dev); 66static int mly_shutdown(device_t dev); 67static void mly_intr(void *arg); 68 69static int mly_sg_map(struct mly_softc *sc); 70static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 71static int mly_mmbox_map(struct mly_softc *sc); 72static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 73static void mly_free(struct mly_softc *sc); 74 75static int mly_get_controllerinfo(struct mly_softc *sc); 76static void mly_scan_devices(struct mly_softc *sc); 77static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 78static void mly_complete_rescan(struct mly_command *mc); 79static int mly_get_eventstatus(struct mly_softc *sc); 80static int mly_enable_mmbox(struct mly_softc *sc); 81static int mly_flush(struct mly_softc *sc); 82static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 83 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 84static void mly_check_event(struct mly_softc *sc); 85static void mly_fetch_event(struct mly_softc *sc); 86static void mly_complete_event(struct mly_command *mc); 87static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 88static void mly_periodic(void *data); 89 90static int mly_immediate_command(struct mly_command *mc); 91static int mly_start(struct mly_command *mc); 92static void mly_done(struct mly_softc *sc); 93static void mly_complete(struct mly_softc *sc); 94static void mly_complete_handler(void *context, int pending); 95 96static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 97static void mly_release_command(struct mly_command *mc); 98static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 99static int mly_alloc_commands(struct mly_softc *sc); 100static void mly_release_commands(struct mly_softc *sc); 101static void mly_map_command(struct mly_command *mc); 102static void mly_unmap_command(struct mly_command *mc); 103 104static int mly_cam_attach(struct mly_softc *sc); 105static void mly_cam_detach(struct mly_softc *sc); 106static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 107static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 108static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 109static void mly_cam_poll(struct cam_sim *sim); 110static void mly_cam_complete(struct mly_command *mc); 111static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 112static int mly_name_device(struct mly_softc *sc, int bus, int target); 113 114static int mly_fwhandshake(struct mly_softc *sc); 115 116static void mly_describe_controller(struct mly_softc *sc); 117#ifdef MLY_DEBUG 118static void mly_printstate(struct mly_softc *sc); 119static void mly_print_command(struct mly_command *mc); 120static void mly_print_packet(struct mly_command *mc); 121static void mly_panic(struct mly_softc *sc, char *reason); 122static void mly_timeout(void *arg); 123#endif 124void mly_print_controller(int controller); 125 126static d_open_t mly_user_open; 127static d_close_t mly_user_close; 128static d_ioctl_t mly_user_ioctl; 129static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 130static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 131 132#define MLY_CMD_TIMEOUT 20 133 134static device_method_t mly_methods[] = { 135 /* Device interface */ 136 DEVMETHOD(device_probe, mly_probe), 137 DEVMETHOD(device_attach, mly_attach), 138 DEVMETHOD(device_detach, mly_detach), 139 DEVMETHOD(device_shutdown, mly_shutdown), 140 { 0, 0 } 141}; 142 143static driver_t mly_pci_driver = { 144 "mly", 145 mly_methods, 146 sizeof(struct mly_softc) 147}; 148 149static devclass_t mly_devclass; 150DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 151MODULE_DEPEND(mly, pci, 1, 1, 1); 152MODULE_DEPEND(mly, cam, 1, 1, 1); 153 154static struct cdevsw mly_cdevsw = { 155 .d_version = D_VERSION, 156 .d_open = mly_user_open, 157 .d_close = mly_user_close, 158 .d_ioctl = mly_user_ioctl, 159 .d_name = "mly", 160}; 161 162/******************************************************************************** 163 ******************************************************************************** 164 Device Interface 165 ******************************************************************************** 166 ********************************************************************************/ 167 168static struct mly_ident 169{ 170 u_int16_t vendor; 171 u_int16_t device; 172 u_int16_t subvendor; 173 u_int16_t subdevice; 174 int hwif; 175 char *desc; 176} mly_identifiers[] = { 177 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 178 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 179 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 180 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 181 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 182 {0, 0, 0, 0, 0, 0} 183}; 184 185/******************************************************************************** 186 * Compare the provided PCI device with the list we support. 187 */ 188static int 189mly_probe(device_t dev) 190{ 191 struct mly_ident *m; 192 193 debug_called(1); 194 195 for (m = mly_identifiers; m->vendor != 0; m++) { 196 if ((m->vendor == pci_get_vendor(dev)) && 197 (m->device == pci_get_device(dev)) && 198 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 199 (m->subdevice == pci_get_subdevice(dev))))) { 200 201 device_set_desc(dev, m->desc); 202 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 203 } 204 } 205 return(ENXIO); 206} 207 208/******************************************************************************** 209 * Initialise the controller and softc 210 */ 211static int 212mly_attach(device_t dev) 213{ 214 struct mly_softc *sc = device_get_softc(dev); 215 int error; 216 217 debug_called(1); 218 219 sc->mly_dev = dev; 220 mtx_init(&sc->mly_lock, "mly", NULL, MTX_DEF); 221 callout_init_mtx(&sc->mly_periodic, &sc->mly_lock, 0); 222 223#ifdef MLY_DEBUG 224 callout_init_mtx(&sc->mly_timeout, &sc->mly_lock, 0); 225 if (device_get_unit(sc->mly_dev) == 0) 226 mly_softc0 = sc; 227#endif 228 229 /* 230 * Do PCI-specific initialisation. 231 */ 232 if ((error = mly_pci_attach(sc)) != 0) 233 goto out; 234 235 /* 236 * Initialise per-controller queues. 237 */ 238 mly_initq_free(sc); 239 mly_initq_busy(sc); 240 mly_initq_complete(sc); 241 242 /* 243 * Initialise command-completion task. 244 */ 245 TASK_INIT(&sc->mly_task_complete, 0, mly_complete_handler, sc); 246 247 /* disable interrupts before we start talking to the controller */ 248 MLY_MASK_INTERRUPTS(sc); 249 250 /* 251 * Wait for the controller to come ready, handshake with the firmware if required. 252 * This is typically only necessary on platforms where the controller BIOS does not 253 * run. 254 */ 255 if ((error = mly_fwhandshake(sc))) 256 goto out; 257 258 /* 259 * Allocate initial command buffers. 260 */ 261 if ((error = mly_alloc_commands(sc))) 262 goto out; 263 264 /* 265 * Obtain controller feature information 266 */ 267 MLY_LOCK(sc); 268 error = mly_get_controllerinfo(sc); 269 MLY_UNLOCK(sc); 270 if (error) 271 goto out; 272 273 /* 274 * Reallocate command buffers now we know how many we want. 275 */ 276 mly_release_commands(sc); 277 if ((error = mly_alloc_commands(sc))) 278 goto out; 279 280 /* 281 * Get the current event counter for health purposes, populate the initial 282 * health status buffer. 283 */ 284 MLY_LOCK(sc); 285 error = mly_get_eventstatus(sc); 286 287 /* 288 * Enable memory-mailbox mode. 289 */ 290 if (error == 0) 291 error = mly_enable_mmbox(sc); 292 MLY_UNLOCK(sc); 293 if (error) 294 goto out; 295 296 /* 297 * Attach to CAM. 298 */ 299 if ((error = mly_cam_attach(sc))) 300 goto out; 301 302 /* 303 * Print a little information about the controller 304 */ 305 mly_describe_controller(sc); 306 307 /* 308 * Mark all attached devices for rescan. 309 */ 310 MLY_LOCK(sc); 311 mly_scan_devices(sc); 312 313 /* 314 * Instigate the first status poll immediately. Rescan completions won't 315 * happen until interrupts are enabled, which should still be before 316 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 317 */ 318 mly_periodic((void *)sc); 319 MLY_UNLOCK(sc); 320 321 /* 322 * Create the control device. 323 */ 324 sc->mly_dev_t = make_dev(&mly_cdevsw, 0, UID_ROOT, GID_OPERATOR, 325 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev)); 326 sc->mly_dev_t->si_drv1 = sc; 327 328 /* enable interrupts now */ 329 MLY_UNMASK_INTERRUPTS(sc); 330 331#ifdef MLY_DEBUG 332 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc); 333#endif 334 335 out: 336 if (error != 0) 337 mly_free(sc); 338 else 339 gone_in_dev(dev, 13, "mly(4) removed"); 340 return(error); 341} 342 343/******************************************************************************** 344 * Perform PCI-specific initialisation. 345 */ 346static int 347mly_pci_attach(struct mly_softc *sc) 348{ 349 int i, error; 350 351 debug_called(1); 352 353 /* assume failure is 'not configured' */ 354 error = ENXIO; 355 356 /* 357 * Verify that the adapter is correctly set up in PCI space. 358 */ 359 pci_enable_busmaster(sc->mly_dev); 360 361 /* 362 * Allocate the PCI register window. 363 */ 364 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 365 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 366 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 367 mly_printf(sc, "can't allocate register window\n"); 368 goto fail; 369 } 370 371 /* 372 * Allocate and connect our interrupt. 373 */ 374 sc->mly_irq_rid = 0; 375 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 376 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 377 mly_printf(sc, "can't allocate interrupt\n"); 378 goto fail; 379 } 380 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY | INTR_MPSAFE, NULL, mly_intr, sc, &sc->mly_intr)) { 381 mly_printf(sc, "can't set up interrupt\n"); 382 goto fail; 383 } 384 385 /* assume failure is 'out of memory' */ 386 error = ENOMEM; 387 388 /* 389 * Allocate the parent bus DMA tag appropriate for our PCI interface. 390 * 391 * Note that all of these controllers are 64-bit capable. 392 */ 393 if (bus_dma_tag_create(bus_get_dma_tag(sc->mly_dev),/* PCI parent */ 394 1, 0, /* alignment, boundary */ 395 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 396 BUS_SPACE_MAXADDR, /* highaddr */ 397 NULL, NULL, /* filter, filterarg */ 398 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 399 BUS_SPACE_UNRESTRICTED, /* nsegments */ 400 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 401 BUS_DMA_ALLOCNOW, /* flags */ 402 NULL, /* lockfunc */ 403 NULL, /* lockarg */ 404 &sc->mly_parent_dmat)) { 405 mly_printf(sc, "can't allocate parent DMA tag\n"); 406 goto fail; 407 } 408 409 /* 410 * Create DMA tag for mapping buffers into controller-addressable space. 411 */ 412 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 413 1, 0, /* alignment, boundary */ 414 BUS_SPACE_MAXADDR, /* lowaddr */ 415 BUS_SPACE_MAXADDR, /* highaddr */ 416 NULL, NULL, /* filter, filterarg */ 417 DFLTPHYS, /* maxsize */ 418 MLY_MAX_SGENTRIES, /* nsegments */ 419 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 420 0, /* flags */ 421 busdma_lock_mutex, /* lockfunc */ 422 &sc->mly_lock, /* lockarg */ 423 &sc->mly_buffer_dmat)) { 424 mly_printf(sc, "can't allocate buffer DMA tag\n"); 425 goto fail; 426 } 427 428 /* 429 * Initialise the DMA tag for command packets. 430 */ 431 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 432 1, 0, /* alignment, boundary */ 433 BUS_SPACE_MAXADDR, /* lowaddr */ 434 BUS_SPACE_MAXADDR, /* highaddr */ 435 NULL, NULL, /* filter, filterarg */ 436 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 437 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 438 BUS_DMA_ALLOCNOW, /* flags */ 439 NULL, NULL, /* lockfunc, lockarg */ 440 &sc->mly_packet_dmat)) { 441 mly_printf(sc, "can't allocate command packet DMA tag\n"); 442 goto fail; 443 } 444 445 /* 446 * Detect the hardware interface version 447 */ 448 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 449 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 450 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 451 sc->mly_hwif = mly_identifiers[i].hwif; 452 switch(sc->mly_hwif) { 453 case MLY_HWIF_I960RX: 454 debug(1, "set hardware up for i960RX"); 455 sc->mly_doorbell_true = 0x00; 456 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 457 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 458 sc->mly_idbr = MLY_I960RX_IDBR; 459 sc->mly_odbr = MLY_I960RX_ODBR; 460 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 461 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 462 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 463 break; 464 case MLY_HWIF_STRONGARM: 465 debug(1, "set hardware up for StrongARM"); 466 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 467 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 468 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 469 sc->mly_idbr = MLY_STRONGARM_IDBR; 470 sc->mly_odbr = MLY_STRONGARM_ODBR; 471 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 472 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 473 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 474 break; 475 } 476 break; 477 } 478 } 479 480 /* 481 * Create the scatter/gather mappings. 482 */ 483 if ((error = mly_sg_map(sc))) 484 goto fail; 485 486 /* 487 * Allocate and map the memory mailbox 488 */ 489 if ((error = mly_mmbox_map(sc))) 490 goto fail; 491 492 error = 0; 493 494fail: 495 return(error); 496} 497 498/******************************************************************************** 499 * Shut the controller down and detach all our resources. 500 */ 501static int 502mly_detach(device_t dev) 503{ 504 int error; 505 506 if ((error = mly_shutdown(dev)) != 0) 507 return(error); 508 509 mly_free(device_get_softc(dev)); 510 return(0); 511} 512 513/******************************************************************************** 514 * Bring the controller to a state where it can be safely left alone. 515 * 516 * Note that it should not be necessary to wait for any outstanding commands, 517 * as they should be completed prior to calling here. 518 * 519 * XXX this applies for I/O, but not status polls; we should beware of 520 * the case where a status command is running while we detach. 521 */ 522static int 523mly_shutdown(device_t dev) 524{ 525 struct mly_softc *sc = device_get_softc(dev); 526 527 debug_called(1); 528 529 MLY_LOCK(sc); 530 if (sc->mly_state & MLY_STATE_OPEN) { 531 MLY_UNLOCK(sc); 532 return(EBUSY); 533 } 534 535 /* kill the periodic event */ 536 callout_stop(&sc->mly_periodic); 537#ifdef MLY_DEBUG 538 callout_stop(&sc->mly_timeout); 539#endif 540 541 /* flush controller */ 542 mly_printf(sc, "flushing cache..."); 543 printf("%s\n", mly_flush(sc) ? "failed" : "done"); 544 545 MLY_MASK_INTERRUPTS(sc); 546 MLY_UNLOCK(sc); 547 548 return(0); 549} 550 551/******************************************************************************* 552 * Take an interrupt, or be poked by other code to look for interrupt-worthy 553 * status. 554 */ 555static void 556mly_intr(void *arg) 557{ 558 struct mly_softc *sc = (struct mly_softc *)arg; 559 560 debug_called(2); 561 562 MLY_LOCK(sc); 563 mly_done(sc); 564 MLY_UNLOCK(sc); 565}; 566 567/******************************************************************************** 568 ******************************************************************************** 569 Bus-dependant Resource Management 570 ******************************************************************************** 571 ********************************************************************************/ 572 573/******************************************************************************** 574 * Allocate memory for the scatter/gather tables 575 */ 576static int 577mly_sg_map(struct mly_softc *sc) 578{ 579 size_t segsize; 580 581 debug_called(1); 582 583 /* 584 * Create a single tag describing a region large enough to hold all of 585 * the s/g lists we will need. 586 */ 587 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 588 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 589 1, 0, /* alignment,boundary */ 590 BUS_SPACE_MAXADDR, /* lowaddr */ 591 BUS_SPACE_MAXADDR, /* highaddr */ 592 NULL, NULL, /* filter, filterarg */ 593 segsize, 1, /* maxsize, nsegments */ 594 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 595 BUS_DMA_ALLOCNOW, /* flags */ 596 NULL, NULL, /* lockfunc, lockarg */ 597 &sc->mly_sg_dmat)) { 598 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 599 return(ENOMEM); 600 } 601 602 /* 603 * Allocate enough s/g maps for all commands and permanently map them into 604 * controller-visible space. 605 * 606 * XXX this assumes we can get enough space for all the s/g maps in one 607 * contiguous slab. 608 */ 609 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 610 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 611 mly_printf(sc, "can't allocate s/g table\n"); 612 return(ENOMEM); 613 } 614 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 615 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 616 return (ENOMEM); 617 return(0); 618} 619 620/******************************************************************************** 621 * Save the physical address of the base of the s/g table. 622 */ 623static void 624mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 625{ 626 struct mly_softc *sc = (struct mly_softc *)arg; 627 628 debug_called(1); 629 630 /* save base of s/g table's address in bus space */ 631 sc->mly_sg_busaddr = segs->ds_addr; 632} 633 634/******************************************************************************** 635 * Allocate memory for the memory-mailbox interface 636 */ 637static int 638mly_mmbox_map(struct mly_softc *sc) 639{ 640 641 /* 642 * Create a DMA tag for a single contiguous region large enough for the 643 * memory mailbox structure. 644 */ 645 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 646 1, 0, /* alignment,boundary */ 647 BUS_SPACE_MAXADDR, /* lowaddr */ 648 BUS_SPACE_MAXADDR, /* highaddr */ 649 NULL, NULL, /* filter, filterarg */ 650 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 651 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 652 BUS_DMA_ALLOCNOW, /* flags */ 653 NULL, NULL, /* lockfunc, lockarg */ 654 &sc->mly_mmbox_dmat)) { 655 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 656 return(ENOMEM); 657 } 658 659 /* 660 * Allocate the buffer 661 */ 662 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 663 mly_printf(sc, "can't allocate memory mailbox\n"); 664 return(ENOMEM); 665 } 666 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 667 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 668 BUS_DMA_NOWAIT) != 0) 669 return (ENOMEM); 670 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 671 return(0); 672 673} 674 675/******************************************************************************** 676 * Save the physical address of the memory mailbox 677 */ 678static void 679mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 680{ 681 struct mly_softc *sc = (struct mly_softc *)arg; 682 683 debug_called(1); 684 685 sc->mly_mmbox_busaddr = segs->ds_addr; 686} 687 688/******************************************************************************** 689 * Free all of the resources associated with (sc) 690 * 691 * Should not be called if the controller is active. 692 */ 693static void 694mly_free(struct mly_softc *sc) 695{ 696 697 debug_called(1); 698 699 /* Remove the management device */ 700 destroy_dev(sc->mly_dev_t); 701 702 if (sc->mly_intr) 703 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 704 callout_drain(&sc->mly_periodic); 705#ifdef MLY_DEBUG 706 callout_drain(&sc->mly_timeout); 707#endif 708 709 /* detach from CAM */ 710 mly_cam_detach(sc); 711 712 /* release command memory */ 713 mly_release_commands(sc); 714 715 /* throw away the controllerinfo structure */ 716 if (sc->mly_controllerinfo != NULL) 717 free(sc->mly_controllerinfo, M_DEVBUF); 718 719 /* throw away the controllerparam structure */ 720 if (sc->mly_controllerparam != NULL) 721 free(sc->mly_controllerparam, M_DEVBUF); 722 723 /* destroy data-transfer DMA tag */ 724 if (sc->mly_buffer_dmat) 725 bus_dma_tag_destroy(sc->mly_buffer_dmat); 726 727 /* free and destroy DMA memory and tag for s/g lists */ 728 if (sc->mly_sg_table) { 729 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 730 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 731 } 732 if (sc->mly_sg_dmat) 733 bus_dma_tag_destroy(sc->mly_sg_dmat); 734 735 /* free and destroy DMA memory and tag for memory mailbox */ 736 if (sc->mly_mmbox) { 737 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 738 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 739 } 740 if (sc->mly_mmbox_dmat) 741 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 742 743 /* disconnect the interrupt handler */ 744 if (sc->mly_irq != NULL) 745 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 746 747 /* destroy the parent DMA tag */ 748 if (sc->mly_parent_dmat) 749 bus_dma_tag_destroy(sc->mly_parent_dmat); 750 751 /* release the register window mapping */ 752 if (sc->mly_regs_resource != NULL) 753 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 754 755 mtx_destroy(&sc->mly_lock); 756} 757 758/******************************************************************************** 759 ******************************************************************************** 760 Command Wrappers 761 ******************************************************************************** 762 ********************************************************************************/ 763 764/******************************************************************************** 765 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 766 */ 767static int 768mly_get_controllerinfo(struct mly_softc *sc) 769{ 770 struct mly_command_ioctl mci; 771 u_int8_t status; 772 int error; 773 774 debug_called(1); 775 776 if (sc->mly_controllerinfo != NULL) 777 free(sc->mly_controllerinfo, M_DEVBUF); 778 779 /* build the getcontrollerinfo ioctl and send it */ 780 bzero(&mci, sizeof(mci)); 781 sc->mly_controllerinfo = NULL; 782 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 783 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 784 &status, NULL, NULL))) 785 return(error); 786 if (status != 0) 787 return(EIO); 788 789 if (sc->mly_controllerparam != NULL) 790 free(sc->mly_controllerparam, M_DEVBUF); 791 792 /* build the getcontrollerparameter ioctl and send it */ 793 bzero(&mci, sizeof(mci)); 794 sc->mly_controllerparam = NULL; 795 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 796 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 797 &status, NULL, NULL))) 798 return(error); 799 if (status != 0) 800 return(EIO); 801 802 return(0); 803} 804 805/******************************************************************************** 806 * Schedule all possible devices for a rescan. 807 * 808 */ 809static void 810mly_scan_devices(struct mly_softc *sc) 811{ 812 int bus, target; 813 814 debug_called(1); 815 816 /* 817 * Clear any previous BTL information. 818 */ 819 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 820 821 /* 822 * Mark all devices as requiring a rescan, and let the next 823 * periodic scan collect them. 824 */ 825 for (bus = 0; bus < sc->mly_cam_channels; bus++) 826 if (MLY_BUS_IS_VALID(sc, bus)) 827 for (target = 0; target < MLY_MAX_TARGETS; target++) 828 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 829 830} 831 832/******************************************************************************** 833 * Rescan a device, possibly as a consequence of getting an event which suggests 834 * that it may have changed. 835 * 836 * If we suffer resource starvation, we can abandon the rescan as we'll be 837 * retried. 838 */ 839static void 840mly_rescan_btl(struct mly_softc *sc, int bus, int target) 841{ 842 struct mly_command *mc; 843 struct mly_command_ioctl *mci; 844 845 debug_called(1); 846 847 /* check that this bus is valid */ 848 if (!MLY_BUS_IS_VALID(sc, bus)) 849 return; 850 851 /* get a command */ 852 if (mly_alloc_command(sc, &mc)) 853 return; 854 855 /* set up the data buffer */ 856 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 857 mly_release_command(mc); 858 return; 859 } 860 mc->mc_flags |= MLY_CMD_DATAIN; 861 mc->mc_complete = mly_complete_rescan; 862 863 /* 864 * Build the ioctl. 865 */ 866 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 867 mci->opcode = MDACMD_IOCTL; 868 mci->addr.phys.controller = 0; 869 mci->timeout.value = 30; 870 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 871 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 872 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 873 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 874 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 875 debug(1, "logical device %d", mci->addr.log.logdev); 876 } else { 877 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 878 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 879 mci->addr.phys.lun = 0; 880 mci->addr.phys.target = target; 881 mci->addr.phys.channel = bus; 882 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 883 } 884 885 /* 886 * Dispatch the command. If we successfully send the command, clear the rescan 887 * bit. 888 */ 889 if (mly_start(mc) != 0) { 890 mly_release_command(mc); 891 } else { 892 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 893 } 894} 895 896/******************************************************************************** 897 * Handle the completion of a rescan operation 898 */ 899static void 900mly_complete_rescan(struct mly_command *mc) 901{ 902 struct mly_softc *sc = mc->mc_sc; 903 struct mly_ioctl_getlogdevinfovalid *ldi; 904 struct mly_ioctl_getphysdevinfovalid *pdi; 905 struct mly_command_ioctl *mci; 906 struct mly_btl btl, *btlp; 907 int bus, target, rescan; 908 909 debug_called(1); 910 911 /* 912 * Recover the bus and target from the command. We need these even in 913 * the case where we don't have a useful response. 914 */ 915 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 916 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 917 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 918 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 919 } else { 920 bus = mci->addr.phys.channel; 921 target = mci->addr.phys.target; 922 } 923 /* XXX validate bus/target? */ 924 925 /* the default result is 'no device' */ 926 bzero(&btl, sizeof(btl)); 927 928 /* if the rescan completed OK, we have possibly-new BTL data */ 929 if (mc->mc_status == 0) { 930 if (mc->mc_length == sizeof(*ldi)) { 931 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 932 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 933 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 934 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 935 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 936 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 937 /* XXX what can we do about this? */ 938 } 939 btl.mb_flags = MLY_BTL_LOGICAL; 940 btl.mb_type = ldi->raid_level; 941 btl.mb_state = ldi->state; 942 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 943 mly_describe_code(mly_table_device_type, ldi->raid_level), 944 mly_describe_code(mly_table_device_state, ldi->state)); 945 } else if (mc->mc_length == sizeof(*pdi)) { 946 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 947 if ((pdi->channel != bus) || (pdi->target != target)) { 948 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 949 bus, target, pdi->channel, pdi->target); 950 /* XXX what can we do about this? */ 951 } 952 btl.mb_flags = MLY_BTL_PHYSICAL; 953 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 954 btl.mb_state = pdi->state; 955 btl.mb_speed = pdi->speed; 956 btl.mb_width = pdi->width; 957 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 958 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 959 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 960 mly_describe_code(mly_table_device_state, pdi->state)); 961 } else { 962 mly_printf(sc, "BTL rescan result invalid\n"); 963 } 964 } 965 966 free(mc->mc_data, M_DEVBUF); 967 mly_release_command(mc); 968 969 /* 970 * Decide whether we need to rescan the device. 971 */ 972 rescan = 0; 973 974 /* device type changes (usually between 'nothing' and 'something') */ 975 btlp = &sc->mly_btl[bus][target]; 976 if (btl.mb_flags != btlp->mb_flags) { 977 debug(1, "flags changed, rescanning"); 978 rescan = 1; 979 } 980 981 /* XXX other reasons? */ 982 983 /* 984 * Update BTL information. 985 */ 986 *btlp = btl; 987 988 /* 989 * Perform CAM rescan if required. 990 */ 991 if (rescan) 992 mly_cam_rescan_btl(sc, bus, target); 993} 994 995/******************************************************************************** 996 * Get the current health status and set the 'next event' counter to suit. 997 */ 998static int 999mly_get_eventstatus(struct mly_softc *sc) 1000{ 1001 struct mly_command_ioctl mci; 1002 struct mly_health_status *mh; 1003 u_int8_t status; 1004 int error; 1005 1006 /* build the gethealthstatus ioctl and send it */ 1007 bzero(&mci, sizeof(mci)); 1008 mh = NULL; 1009 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 1010 1011 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 1012 return(error); 1013 if (status != 0) 1014 return(EIO); 1015 1016 /* get the event counter */ 1017 sc->mly_event_change = mh->change_counter; 1018 sc->mly_event_waiting = mh->next_event; 1019 sc->mly_event_counter = mh->next_event; 1020 1021 /* save the health status into the memory mailbox */ 1022 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1023 1024 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1025 1026 free(mh, M_DEVBUF); 1027 return(0); 1028} 1029 1030/******************************************************************************** 1031 * Enable the memory mailbox mode. 1032 */ 1033static int 1034mly_enable_mmbox(struct mly_softc *sc) 1035{ 1036 struct mly_command_ioctl mci; 1037 u_int8_t *sp, status; 1038 int error; 1039 1040 debug_called(1); 1041 1042 /* build the ioctl and send it */ 1043 bzero(&mci, sizeof(mci)); 1044 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1045 /* set buffer addresses */ 1046 mci.param.setmemorymailbox.command_mailbox_physaddr = 1047 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1048 mci.param.setmemorymailbox.status_mailbox_physaddr = 1049 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1050 mci.param.setmemorymailbox.health_buffer_physaddr = 1051 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1052 1053 /* set buffer sizes - abuse of data_size field is revolting */ 1054 sp = (u_int8_t *)&mci.data_size; 1055 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1056 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1057 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1058 1059 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1060 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1061 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1062 mci.param.setmemorymailbox.health_buffer_physaddr, 1063 mci.param.setmemorymailbox.health_buffer_size); 1064 1065 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1066 return(error); 1067 if (status != 0) 1068 return(EIO); 1069 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1070 debug(1, "memory mailbox active"); 1071 return(0); 1072} 1073 1074/******************************************************************************** 1075 * Flush all pending I/O from the controller. 1076 */ 1077static int 1078mly_flush(struct mly_softc *sc) 1079{ 1080 struct mly_command_ioctl mci; 1081 u_int8_t status; 1082 int error; 1083 1084 debug_called(1); 1085 1086 /* build the ioctl */ 1087 bzero(&mci, sizeof(mci)); 1088 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1089 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1090 1091 /* pass it off to the controller */ 1092 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1093 return(error); 1094 1095 return((status == 0) ? 0 : EIO); 1096} 1097 1098/******************************************************************************** 1099 * Perform an ioctl command. 1100 * 1101 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1102 * the command requires data transfer from the controller, and we will allocate 1103 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1104 * to the controller. 1105 * 1106 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1107 * 1108 * XXX we don't even try to handle the case where datasize > 4k. We should. 1109 */ 1110static int 1111mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1112 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1113{ 1114 struct mly_command *mc; 1115 struct mly_command_ioctl *mci; 1116 int error; 1117 1118 debug_called(1); 1119 MLY_ASSERT_LOCKED(sc); 1120 1121 mc = NULL; 1122 if (mly_alloc_command(sc, &mc)) { 1123 error = ENOMEM; 1124 goto out; 1125 } 1126 1127 /* copy the ioctl structure, but save some important fields and then fixup */ 1128 mci = &mc->mc_packet->ioctl; 1129 ioctl->sense_buffer_address = mci->sense_buffer_address; 1130 ioctl->maximum_sense_size = mci->maximum_sense_size; 1131 *mci = *ioctl; 1132 mci->opcode = MDACMD_IOCTL; 1133 mci->timeout.value = 30; 1134 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1135 1136 /* handle the data buffer */ 1137 if (data != NULL) { 1138 if (*data == NULL) { 1139 /* allocate data buffer */ 1140 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) { 1141 error = ENOMEM; 1142 goto out; 1143 } 1144 mc->mc_flags |= MLY_CMD_DATAIN; 1145 } else { 1146 mc->mc_data = *data; 1147 mc->mc_flags |= MLY_CMD_DATAOUT; 1148 } 1149 mc->mc_length = datasize; 1150 mc->mc_packet->generic.data_size = datasize; 1151 } 1152 1153 /* run the command */ 1154 if ((error = mly_immediate_command(mc))) 1155 goto out; 1156 1157 /* clean up and return any data */ 1158 *status = mc->mc_status; 1159 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1160 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1161 *sense_length = mc->mc_sense; 1162 goto out; 1163 } 1164 1165 /* should we return a data pointer? */ 1166 if ((data != NULL) && (*data == NULL)) 1167 *data = mc->mc_data; 1168 1169 /* command completed OK */ 1170 error = 0; 1171 1172out: 1173 if (mc != NULL) { 1174 /* do we need to free a data buffer we allocated? */ 1175 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1176 free(mc->mc_data, M_DEVBUF); 1177 mly_release_command(mc); 1178 } 1179 return(error); 1180} 1181 1182/******************************************************************************** 1183 * Check for event(s) outstanding in the controller. 1184 */ 1185static void 1186mly_check_event(struct mly_softc *sc) 1187{ 1188 1189 /* 1190 * The controller may have updated the health status information, 1191 * so check for it here. Note that the counters are all in host memory, 1192 * so this check is very cheap. Also note that we depend on checking on 1193 * completion 1194 */ 1195 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1196 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1197 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1198 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1199 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1200 1201 /* wake up anyone that might be interested in this */ 1202 wakeup(&sc->mly_event_change); 1203 } 1204 if (sc->mly_event_counter != sc->mly_event_waiting) 1205 mly_fetch_event(sc); 1206} 1207 1208/******************************************************************************** 1209 * Fetch one event from the controller. 1210 * 1211 * If we fail due to resource starvation, we'll be retried the next time a 1212 * command completes. 1213 */ 1214static void 1215mly_fetch_event(struct mly_softc *sc) 1216{ 1217 struct mly_command *mc; 1218 struct mly_command_ioctl *mci; 1219 u_int32_t event; 1220 1221 debug_called(1); 1222 1223 /* get a command */ 1224 if (mly_alloc_command(sc, &mc)) 1225 return; 1226 1227 /* set up the data buffer */ 1228 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 1229 mly_release_command(mc); 1230 return; 1231 } 1232 mc->mc_length = sizeof(struct mly_event); 1233 mc->mc_flags |= MLY_CMD_DATAIN; 1234 mc->mc_complete = mly_complete_event; 1235 1236 /* 1237 * Get an event number to fetch. It's possible that we've raced with another 1238 * context for the last event, in which case there will be no more events. 1239 */ 1240 if (sc->mly_event_counter == sc->mly_event_waiting) { 1241 mly_release_command(mc); 1242 return; 1243 } 1244 event = sc->mly_event_counter++; 1245 1246 /* 1247 * Build the ioctl. 1248 * 1249 * At this point we are committed to sending this request, as it 1250 * will be the only one constructed for this particular event number. 1251 */ 1252 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1253 mci->opcode = MDACMD_IOCTL; 1254 mci->data_size = sizeof(struct mly_event); 1255 mci->addr.phys.lun = (event >> 16) & 0xff; 1256 mci->addr.phys.target = (event >> 24) & 0xff; 1257 mci->addr.phys.channel = 0; 1258 mci->addr.phys.controller = 0; 1259 mci->timeout.value = 30; 1260 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1261 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1262 mci->param.getevent.sequence_number_low = event & 0xffff; 1263 1264 debug(1, "fetch event %u", event); 1265 1266 /* 1267 * Submit the command. 1268 * 1269 * Note that failure of mly_start() will result in this event never being 1270 * fetched. 1271 */ 1272 if (mly_start(mc) != 0) { 1273 mly_printf(sc, "couldn't fetch event %u\n", event); 1274 mly_release_command(mc); 1275 } 1276} 1277 1278/******************************************************************************** 1279 * Handle the completion of an event poll. 1280 */ 1281static void 1282mly_complete_event(struct mly_command *mc) 1283{ 1284 struct mly_softc *sc = mc->mc_sc; 1285 struct mly_event *me = (struct mly_event *)mc->mc_data; 1286 1287 debug_called(1); 1288 1289 /* 1290 * If the event was successfully fetched, process it. 1291 */ 1292 if (mc->mc_status == SCSI_STATUS_OK) { 1293 mly_process_event(sc, me); 1294 free(me, M_DEVBUF); 1295 } 1296 mly_release_command(mc); 1297 1298 /* 1299 * Check for another event. 1300 */ 1301 mly_check_event(sc); 1302} 1303 1304/******************************************************************************** 1305 * Process a controller event. 1306 */ 1307static void 1308mly_process_event(struct mly_softc *sc, struct mly_event *me) 1309{ 1310 struct scsi_sense_data_fixed *ssd; 1311 char *fp, *tp; 1312 int bus, target, event, class, action; 1313 1314 ssd = (struct scsi_sense_data_fixed *)&me->sense[0]; 1315 1316 /* 1317 * Errors can be reported using vendor-unique sense data. In this case, the 1318 * event code will be 0x1c (Request sense data present), the sense key will 1319 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1320 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1321 * and low seven bits of the ASC (low seven bits of the high byte). 1322 */ 1323 if ((me->code == 0x1c) && 1324 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1325 (ssd->add_sense_code & 0x80)) { 1326 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1327 } else { 1328 event = me->code; 1329 } 1330 1331 /* look up event, get codes */ 1332 fp = mly_describe_code(mly_table_event, event); 1333 1334 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1335 1336 /* quiet event? */ 1337 class = fp[0]; 1338 if (isupper(class) && bootverbose) 1339 class = tolower(class); 1340 1341 /* get action code, text string */ 1342 action = fp[1]; 1343 tp = &fp[2]; 1344 1345 /* 1346 * Print some information about the event. 1347 * 1348 * This code uses a table derived from the corresponding portion of the Linux 1349 * driver, and thus the parser is very similar. 1350 */ 1351 switch(class) { 1352 case 'p': /* error on physical device */ 1353 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1354 if (action == 'r') 1355 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1356 break; 1357 case 'l': /* error on logical unit */ 1358 case 'm': /* message about logical unit */ 1359 bus = MLY_LOGDEV_BUS(sc, me->lun); 1360 target = MLY_LOGDEV_TARGET(sc, me->lun); 1361 mly_name_device(sc, bus, target); 1362 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1363 if (action == 'r') 1364 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1365 break; 1366 case 's': /* report of sense data */ 1367 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1368 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1369 (ssd->add_sense_code == 0x04) && 1370 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1371 break; /* ignore NO_SENSE or NOT_READY in one case */ 1372 1373 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1374 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1375 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1376 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1377 if (action == 'r') 1378 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1379 break; 1380 case 'e': 1381 mly_printf(sc, tp, me->target, me->lun); 1382 printf("\n"); 1383 break; 1384 case 'c': 1385 mly_printf(sc, "controller %s\n", tp); 1386 break; 1387 case '?': 1388 mly_printf(sc, "%s - %d\n", tp, me->code); 1389 break; 1390 default: /* probably a 'noisy' event being ignored */ 1391 break; 1392 } 1393} 1394 1395/******************************************************************************** 1396 * Perform periodic activities. 1397 */ 1398static void 1399mly_periodic(void *data) 1400{ 1401 struct mly_softc *sc = (struct mly_softc *)data; 1402 int bus, target; 1403 1404 debug_called(2); 1405 MLY_ASSERT_LOCKED(sc); 1406 1407 /* 1408 * Scan devices. 1409 */ 1410 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1411 if (MLY_BUS_IS_VALID(sc, bus)) { 1412 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1413 /* ignore the controller in this scan */ 1414 if (target == sc->mly_controllerparam->initiator_id) 1415 continue; 1416 1417 /* perform device rescan? */ 1418 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1419 mly_rescan_btl(sc, bus, target); 1420 } 1421 } 1422 } 1423 1424 /* check for controller events */ 1425 mly_check_event(sc); 1426 1427 /* reschedule ourselves */ 1428 callout_schedule(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz); 1429} 1430 1431/******************************************************************************** 1432 ******************************************************************************** 1433 Command Processing 1434 ******************************************************************************** 1435 ********************************************************************************/ 1436 1437/******************************************************************************** 1438 * Run a command and wait for it to complete. 1439 * 1440 */ 1441static int 1442mly_immediate_command(struct mly_command *mc) 1443{ 1444 struct mly_softc *sc = mc->mc_sc; 1445 int error; 1446 1447 debug_called(1); 1448 1449 MLY_ASSERT_LOCKED(sc); 1450 if ((error = mly_start(mc))) { 1451 return(error); 1452 } 1453 1454 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1455 /* sleep on the command */ 1456 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1457 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlywait", 0); 1458 } 1459 } else { 1460 /* spin and collect status while we do */ 1461 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1462 mly_done(mc->mc_sc); 1463 } 1464 } 1465 return(0); 1466} 1467 1468/******************************************************************************** 1469 * Deliver a command to the controller. 1470 * 1471 * XXX it would be good to just queue commands that we can't submit immediately 1472 * and send them later, but we probably want a wrapper for that so that 1473 * we don't hang on a failed submission for an immediate command. 1474 */ 1475static int 1476mly_start(struct mly_command *mc) 1477{ 1478 struct mly_softc *sc = mc->mc_sc; 1479 union mly_command_packet *pkt; 1480 1481 debug_called(2); 1482 MLY_ASSERT_LOCKED(sc); 1483 1484 /* 1485 * Set the command up for delivery to the controller. 1486 */ 1487 mly_map_command(mc); 1488 mc->mc_packet->generic.command_id = mc->mc_slot; 1489 1490#ifdef MLY_DEBUG 1491 mc->mc_timestamp = time_second; 1492#endif 1493 1494 /* 1495 * Do we have to use the hardware mailbox? 1496 */ 1497 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1498 /* 1499 * Check to see if the controller is ready for us. 1500 */ 1501 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1502 return(EBUSY); 1503 } 1504 mc->mc_flags |= MLY_CMD_BUSY; 1505 1506 /* 1507 * It's ready, send the command. 1508 */ 1509 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1510 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1511 1512 } else { /* use memory-mailbox mode */ 1513 1514 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1515 1516 /* check to see if the next index is free yet */ 1517 if (pkt->mmbox.flag != 0) { 1518 return(EBUSY); 1519 } 1520 mc->mc_flags |= MLY_CMD_BUSY; 1521 1522 /* copy in new command */ 1523 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1524 /* barrier to ensure completion of previous write before we write the flag */ 1525 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1526 /* copy flag last */ 1527 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1528 /* barrier to ensure completion of previous write before we notify the controller */ 1529 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1530 1531 /* signal controller, update index */ 1532 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1533 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1534 } 1535 1536 mly_enqueue_busy(mc); 1537 return(0); 1538} 1539 1540/******************************************************************************** 1541 * Pick up command status from the controller, schedule a completion event 1542 */ 1543static void 1544mly_done(struct mly_softc *sc) 1545{ 1546 struct mly_command *mc; 1547 union mly_status_packet *sp; 1548 u_int16_t slot; 1549 int worked; 1550 1551 MLY_ASSERT_LOCKED(sc); 1552 worked = 0; 1553 1554 /* pick up hardware-mailbox commands */ 1555 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1556 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1557 if (slot < MLY_SLOT_MAX) { 1558 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1559 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1560 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1561 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1562 mly_remove_busy(mc); 1563 mc->mc_flags &= ~MLY_CMD_BUSY; 1564 mly_enqueue_complete(mc); 1565 worked = 1; 1566 } else { 1567 /* slot 0xffff may mean "extremely bogus command" */ 1568 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1569 } 1570 /* unconditionally acknowledge status */ 1571 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1572 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1573 } 1574 1575 /* pick up memory-mailbox commands */ 1576 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1577 for (;;) { 1578 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1579 1580 /* check for more status */ 1581 if (sp->mmbox.flag == 0) 1582 break; 1583 1584 /* get slot number */ 1585 slot = sp->status.command_id; 1586 if (slot < MLY_SLOT_MAX) { 1587 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1588 mc->mc_status = sp->status.status; 1589 mc->mc_sense = sp->status.sense_length; 1590 mc->mc_resid = sp->status.residue; 1591 mly_remove_busy(mc); 1592 mc->mc_flags &= ~MLY_CMD_BUSY; 1593 mly_enqueue_complete(mc); 1594 worked = 1; 1595 } else { 1596 /* slot 0xffff may mean "extremely bogus command" */ 1597 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1598 slot, sc->mly_mmbox_status_index); 1599 } 1600 1601 /* clear and move to next index */ 1602 sp->mmbox.flag = 0; 1603 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1604 } 1605 /* acknowledge that we have collected status value(s) */ 1606 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1607 } 1608 1609 if (worked) { 1610 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1611 taskqueue_enqueue(taskqueue_thread, &sc->mly_task_complete); 1612 else 1613 mly_complete(sc); 1614 } 1615} 1616 1617/******************************************************************************** 1618 * Process completed commands 1619 */ 1620static void 1621mly_complete_handler(void *context, int pending) 1622{ 1623 struct mly_softc *sc = (struct mly_softc *)context; 1624 1625 MLY_LOCK(sc); 1626 mly_complete(sc); 1627 MLY_UNLOCK(sc); 1628} 1629 1630static void 1631mly_complete(struct mly_softc *sc) 1632{ 1633 struct mly_command *mc; 1634 void (* mc_complete)(struct mly_command *mc); 1635 1636 debug_called(2); 1637 1638 /* 1639 * Spin pulling commands off the completed queue and processing them. 1640 */ 1641 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1642 /* 1643 * Free controller resources, mark command complete. 1644 * 1645 * Note that as soon as we mark the command complete, it may be freed 1646 * out from under us, so we need to save the mc_complete field in 1647 * order to later avoid dereferencing mc. (We would not expect to 1648 * have a polling/sleeping consumer with mc_complete != NULL). 1649 */ 1650 mly_unmap_command(mc); 1651 mc_complete = mc->mc_complete; 1652 mc->mc_flags |= MLY_CMD_COMPLETE; 1653 1654 /* 1655 * Call completion handler or wake up sleeping consumer. 1656 */ 1657 if (mc_complete != NULL) { 1658 mc_complete(mc); 1659 } else { 1660 wakeup(mc); 1661 } 1662 } 1663 1664 /* 1665 * XXX if we are deferring commands due to controller-busy status, we should 1666 * retry submitting them here. 1667 */ 1668} 1669 1670/******************************************************************************** 1671 ******************************************************************************** 1672 Command Buffer Management 1673 ******************************************************************************** 1674 ********************************************************************************/ 1675 1676/******************************************************************************** 1677 * Allocate a command. 1678 */ 1679static int 1680mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1681{ 1682 struct mly_command *mc; 1683 1684 debug_called(3); 1685 1686 if ((mc = mly_dequeue_free(sc)) == NULL) 1687 return(ENOMEM); 1688 1689 *mcp = mc; 1690 return(0); 1691} 1692 1693/******************************************************************************** 1694 * Release a command back to the freelist. 1695 */ 1696static void 1697mly_release_command(struct mly_command *mc) 1698{ 1699 debug_called(3); 1700 1701 /* 1702 * Fill in parts of the command that may cause confusion if 1703 * a consumer doesn't when we are later allocated. 1704 */ 1705 mc->mc_data = NULL; 1706 mc->mc_flags = 0; 1707 mc->mc_complete = NULL; 1708 mc->mc_private = NULL; 1709 1710 /* 1711 * By default, we set up to overwrite the command packet with 1712 * sense information. 1713 */ 1714 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1715 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1716 1717 mly_enqueue_free(mc); 1718} 1719 1720/******************************************************************************** 1721 * Map helper for command allocation. 1722 */ 1723static void 1724mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1725{ 1726 struct mly_softc *sc = (struct mly_softc *)arg; 1727 1728 debug_called(1); 1729 1730 sc->mly_packetphys = segs[0].ds_addr; 1731} 1732 1733/******************************************************************************** 1734 * Allocate and initialise command and packet structures. 1735 * 1736 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1737 * allocation to that number. If we don't yet know how many commands the 1738 * controller supports, allocate a very small set (suitable for initialisation 1739 * purposes only). 1740 */ 1741static int 1742mly_alloc_commands(struct mly_softc *sc) 1743{ 1744 struct mly_command *mc; 1745 int i, ncmd; 1746 1747 if (sc->mly_controllerinfo == NULL) { 1748 ncmd = 4; 1749 } else { 1750 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1751 } 1752 1753 /* 1754 * Allocate enough space for all the command packets in one chunk and 1755 * map them permanently into controller-visible space. 1756 */ 1757 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1758 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1759 return(ENOMEM); 1760 } 1761 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1762 ncmd * sizeof(union mly_command_packet), 1763 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1764 return (ENOMEM); 1765 1766 for (i = 0; i < ncmd; i++) { 1767 mc = &sc->mly_command[i]; 1768 bzero(mc, sizeof(*mc)); 1769 mc->mc_sc = sc; 1770 mc->mc_slot = MLY_SLOT_START + i; 1771 mc->mc_packet = sc->mly_packet + i; 1772 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1773 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1774 mly_release_command(mc); 1775 } 1776 return(0); 1777} 1778 1779/******************************************************************************** 1780 * Free all the storage held by commands. 1781 * 1782 * Must be called with all commands on the free list. 1783 */ 1784static void 1785mly_release_commands(struct mly_softc *sc) 1786{ 1787 struct mly_command *mc; 1788 1789 /* throw away command buffer DMA maps */ 1790 while (mly_alloc_command(sc, &mc) == 0) 1791 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1792 1793 /* release the packet storage */ 1794 if (sc->mly_packet != NULL) { 1795 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1796 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1797 sc->mly_packet = NULL; 1798 } 1799} 1800 1801/******************************************************************************** 1802 * Command-mapping helper function - populate this command's s/g table 1803 * with the s/g entries for its data. 1804 */ 1805static void 1806mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1807{ 1808 struct mly_command *mc = (struct mly_command *)arg; 1809 struct mly_softc *sc = mc->mc_sc; 1810 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1811 struct mly_sg_entry *sg; 1812 int i, tabofs; 1813 1814 debug_called(2); 1815 1816 /* can we use the transfer structure directly? */ 1817 if (nseg <= 2) { 1818 sg = &gen->transfer.direct.sg[0]; 1819 gen->command_control.extended_sg_table = 0; 1820 } else { 1821 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1822 sg = sc->mly_sg_table + tabofs; 1823 gen->transfer.indirect.entries[0] = nseg; 1824 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1825 gen->command_control.extended_sg_table = 1; 1826 } 1827 1828 /* copy the s/g table */ 1829 for (i = 0; i < nseg; i++) { 1830 sg[i].physaddr = segs[i].ds_addr; 1831 sg[i].length = segs[i].ds_len; 1832 } 1833 1834} 1835 1836#if 0 1837/******************************************************************************** 1838 * Command-mapping helper function - save the cdb's physical address. 1839 * 1840 * We don't support 'large' SCSI commands at this time, so this is unused. 1841 */ 1842static void 1843mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1844{ 1845 struct mly_command *mc = (struct mly_command *)arg; 1846 1847 debug_called(2); 1848 1849 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1850 if ((segs[0].ds_addr % PAGE_SIZE) > 1851 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1852 panic("cdb crosses page boundary"); 1853 1854 /* fix up fields in the command packet */ 1855 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1856} 1857#endif 1858 1859/******************************************************************************** 1860 * Map a command into controller-visible space 1861 */ 1862static void 1863mly_map_command(struct mly_command *mc) 1864{ 1865 struct mly_softc *sc = mc->mc_sc; 1866 1867 debug_called(2); 1868 1869 /* don't map more than once */ 1870 if (mc->mc_flags & MLY_CMD_MAPPED) 1871 return; 1872 1873 /* does the command have a data buffer? */ 1874 if (mc->mc_data != NULL) { 1875 if (mc->mc_flags & MLY_CMD_CCB) 1876 bus_dmamap_load_ccb(sc->mly_buffer_dmat, mc->mc_datamap, 1877 mc->mc_data, mly_map_command_sg, mc, 0); 1878 else 1879 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, 1880 mc->mc_data, mc->mc_length, 1881 mly_map_command_sg, mc, 0); 1882 if (mc->mc_flags & MLY_CMD_DATAIN) 1883 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1884 if (mc->mc_flags & MLY_CMD_DATAOUT) 1885 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1886 } 1887 mc->mc_flags |= MLY_CMD_MAPPED; 1888} 1889 1890/******************************************************************************** 1891 * Unmap a command from controller-visible space 1892 */ 1893static void 1894mly_unmap_command(struct mly_command *mc) 1895{ 1896 struct mly_softc *sc = mc->mc_sc; 1897 1898 debug_called(2); 1899 1900 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1901 return; 1902 1903 /* does the command have a data buffer? */ 1904 if (mc->mc_data != NULL) { 1905 if (mc->mc_flags & MLY_CMD_DATAIN) 1906 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1907 if (mc->mc_flags & MLY_CMD_DATAOUT) 1908 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1909 1910 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1911 } 1912 mc->mc_flags &= ~MLY_CMD_MAPPED; 1913} 1914 1915/******************************************************************************** 1916 ******************************************************************************** 1917 CAM interface 1918 ******************************************************************************** 1919 ********************************************************************************/ 1920 1921/******************************************************************************** 1922 * Attach the physical and virtual SCSI busses to CAM. 1923 * 1924 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1925 * than the highest physical bus. Physical busses are only registered if 1926 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1927 * 1928 * When we refer to a "bus", we are referring to the bus number registered with 1929 * the SIM, whereas a "channel" is a channel number given to the adapter. In order 1930 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1931 * interchangeably. 1932 */ 1933static int 1934mly_cam_attach(struct mly_softc *sc) 1935{ 1936 struct cam_devq *devq; 1937 int chn, i; 1938 1939 debug_called(1); 1940 1941 /* 1942 * Allocate a devq for all our channels combined. 1943 */ 1944 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1945 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1946 return(ENOMEM); 1947 } 1948 1949 /* 1950 * If physical channel registration has been requested, register these first. 1951 * Note that we enable tagged command queueing for physical channels. 1952 */ 1953 if (testenv("hw.mly.register_physical_channels")) { 1954 chn = 0; 1955 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1956 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1957 device_get_unit(sc->mly_dev), 1958 &sc->mly_lock, 1959 sc->mly_controllerinfo->maximum_parallel_commands, 1960 1, devq)) == NULL) { 1961 return(ENOMEM); 1962 } 1963 MLY_LOCK(sc); 1964 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1965 MLY_UNLOCK(sc); 1966 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1967 return(ENXIO); 1968 } 1969 MLY_UNLOCK(sc); 1970 debug(1, "registered physical channel %d", chn); 1971 } 1972 } 1973 1974 /* 1975 * Register our virtual channels, with bus numbers matching channel numbers. 1976 */ 1977 chn = sc->mly_controllerinfo->physical_channels_present; 1978 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1979 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1980 device_get_unit(sc->mly_dev), 1981 &sc->mly_lock, 1982 sc->mly_controllerinfo->maximum_parallel_commands, 1983 0, devq)) == NULL) { 1984 return(ENOMEM); 1985 } 1986 MLY_LOCK(sc); 1987 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1988 MLY_UNLOCK(sc); 1989 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1990 return(ENXIO); 1991 } 1992 MLY_UNLOCK(sc); 1993 debug(1, "registered virtual channel %d", chn); 1994 } 1995 1996 /* 1997 * This is the total number of channels that (might have been) registered with 1998 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1999 */ 2000 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 2001 sc->mly_controllerinfo->virtual_channels_present; 2002 2003 return(0); 2004} 2005 2006/******************************************************************************** 2007 * Detach from CAM 2008 */ 2009static void 2010mly_cam_detach(struct mly_softc *sc) 2011{ 2012 int i; 2013 2014 debug_called(1); 2015 2016 MLY_LOCK(sc); 2017 for (i = 0; i < sc->mly_cam_channels; i++) { 2018 if (sc->mly_cam_sim[i] != NULL) { 2019 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 2020 cam_sim_free(sc->mly_cam_sim[i], 0); 2021 } 2022 } 2023 MLY_UNLOCK(sc); 2024 if (sc->mly_cam_devq != NULL) 2025 cam_simq_free(sc->mly_cam_devq); 2026} 2027 2028/************************************************************************ 2029 * Rescan a device. 2030 */ 2031static void 2032mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2033{ 2034 union ccb *ccb; 2035 2036 debug_called(1); 2037 2038 if ((ccb = xpt_alloc_ccb()) == NULL) { 2039 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2040 return; 2041 } 2042 if (xpt_create_path(&ccb->ccb_h.path, NULL, 2043 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2044 mly_printf(sc, "rescan failed (can't create path)\n"); 2045 xpt_free_ccb(ccb); 2046 return; 2047 } 2048 debug(1, "rescan target %d:%d", bus, target); 2049 xpt_rescan(ccb); 2050} 2051 2052/******************************************************************************** 2053 * Handle an action requested by CAM 2054 */ 2055static void 2056mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2057{ 2058 struct mly_softc *sc = cam_sim_softc(sim); 2059 2060 debug_called(2); 2061 MLY_ASSERT_LOCKED(sc); 2062 2063 switch (ccb->ccb_h.func_code) { 2064 /* perform SCSI I/O */ 2065 case XPT_SCSI_IO: 2066 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2067 return; 2068 break; 2069 2070 /* perform geometry calculations */ 2071 case XPT_CALC_GEOMETRY: 2072 { 2073 struct ccb_calc_geometry *ccg = &ccb->ccg; 2074 u_int32_t secs_per_cylinder; 2075 2076 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2077 2078 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2079 ccg->heads = 255; 2080 ccg->secs_per_track = 63; 2081 } else { /* MLY_BIOSGEOM_2G */ 2082 ccg->heads = 128; 2083 ccg->secs_per_track = 32; 2084 } 2085 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2086 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2087 ccb->ccb_h.status = CAM_REQ_CMP; 2088 break; 2089 } 2090 2091 /* handle path attribute inquiry */ 2092 case XPT_PATH_INQ: 2093 { 2094 struct ccb_pathinq *cpi = &ccb->cpi; 2095 2096 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2097 2098 cpi->version_num = 1; 2099 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2100 cpi->target_sprt = 0; 2101 cpi->hba_misc = 0; 2102 cpi->max_target = MLY_MAX_TARGETS - 1; 2103 cpi->max_lun = MLY_MAX_LUNS - 1; 2104 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2105 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2106 strlcpy(cpi->hba_vid, "Mylex", HBA_IDLEN); 2107 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2108 cpi->unit_number = cam_sim_unit(sim); 2109 cpi->bus_id = cam_sim_bus(sim); 2110 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2111 cpi->transport = XPORT_SPI; 2112 cpi->transport_version = 2; 2113 cpi->protocol = PROTO_SCSI; 2114 cpi->protocol_version = SCSI_REV_2; 2115 ccb->ccb_h.status = CAM_REQ_CMP; 2116 break; 2117 } 2118 2119 case XPT_GET_TRAN_SETTINGS: 2120 { 2121 struct ccb_trans_settings *cts = &ccb->cts; 2122 int bus, target; 2123 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2124 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2125 2126 cts->protocol = PROTO_SCSI; 2127 cts->protocol_version = SCSI_REV_2; 2128 cts->transport = XPORT_SPI; 2129 cts->transport_version = 2; 2130 2131 scsi->flags = 0; 2132 scsi->valid = 0; 2133 spi->flags = 0; 2134 spi->valid = 0; 2135 2136 bus = cam_sim_bus(sim); 2137 target = cts->ccb_h.target_id; 2138 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2139 /* logical device? */ 2140 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2141 /* nothing special for these */ 2142 /* physical device? */ 2143 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2144 /* allow CAM to try tagged transactions */ 2145 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2146 scsi->valid |= CTS_SCSI_VALID_TQ; 2147 2148 /* convert speed (MHz) to usec */ 2149 if (sc->mly_btl[bus][target].mb_speed == 0) { 2150 spi->sync_period = 1000000 / 5; 2151 } else { 2152 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2153 } 2154 2155 /* convert bus width to CAM internal encoding */ 2156 switch (sc->mly_btl[bus][target].mb_width) { 2157 case 32: 2158 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2159 break; 2160 case 16: 2161 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2162 break; 2163 case 8: 2164 default: 2165 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2166 break; 2167 } 2168 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2169 2170 /* not a device, bail out */ 2171 } else { 2172 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2173 break; 2174 } 2175 2176 /* disconnect always OK */ 2177 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2178 spi->valid |= CTS_SPI_VALID_DISC; 2179 2180 cts->ccb_h.status = CAM_REQ_CMP; 2181 break; 2182 } 2183 2184 default: /* we can't do this */ 2185 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2186 ccb->ccb_h.status = CAM_REQ_INVALID; 2187 break; 2188 } 2189 2190 xpt_done(ccb); 2191} 2192 2193/******************************************************************************** 2194 * Handle an I/O operation requested by CAM 2195 */ 2196static int 2197mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2198{ 2199 struct mly_softc *sc = cam_sim_softc(sim); 2200 struct mly_command *mc; 2201 struct mly_command_scsi_small *ss; 2202 int bus, target; 2203 int error; 2204 2205 bus = cam_sim_bus(sim); 2206 target = csio->ccb_h.target_id; 2207 2208 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2209 2210 /* validate bus number */ 2211 if (!MLY_BUS_IS_VALID(sc, bus)) { 2212 debug(0, " invalid bus %d", bus); 2213 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2214 } 2215 2216 /* check for I/O attempt to a protected device */ 2217 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2218 debug(2, " device protected"); 2219 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2220 } 2221 2222 /* check for I/O attempt to nonexistent device */ 2223 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2224 debug(2, " device %d:%d does not exist", bus, target); 2225 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2226 } 2227 2228 /* XXX increase if/when we support large SCSI commands */ 2229 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2230 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2231 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2232 } 2233 2234 /* check that the CDB pointer is not to a physical address */ 2235 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2236 debug(0, " CDB pointer is to physical address"); 2237 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2238 } 2239 2240 /* abandon aborted ccbs or those that have failed validation */ 2241 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2242 debug(2, "abandoning CCB due to abort/validation failure"); 2243 return(EINVAL); 2244 } 2245 2246 /* 2247 * Get a command, or push the ccb back to CAM and freeze the queue. 2248 */ 2249 if ((error = mly_alloc_command(sc, &mc))) { 2250 xpt_freeze_simq(sim, 1); 2251 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2252 sc->mly_qfrzn_cnt++; 2253 return(error); 2254 } 2255 2256 /* build the command */ 2257 mc->mc_data = csio; 2258 mc->mc_length = csio->dxfer_len; 2259 mc->mc_complete = mly_cam_complete; 2260 mc->mc_private = csio; 2261 mc->mc_flags |= MLY_CMD_CCB; 2262 /* XXX This code doesn't set the data direction in mc_flags. */ 2263 2264 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2265 csio->ccb_h.sim_priv.entries[0].field = bus; 2266 2267 /* build the packet for the controller */ 2268 ss = &mc->mc_packet->scsi_small; 2269 ss->opcode = MDACMD_SCSI; 2270 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2271 ss->command_control.disable_disconnect = 1; 2272 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2273 ss->command_control.data_direction = MLY_CCB_WRITE; 2274 ss->data_size = csio->dxfer_len; 2275 ss->addr.phys.lun = csio->ccb_h.target_lun; 2276 ss->addr.phys.target = csio->ccb_h.target_id; 2277 ss->addr.phys.channel = bus; 2278 if (csio->ccb_h.timeout < (60 * 1000)) { 2279 ss->timeout.value = csio->ccb_h.timeout / 1000; 2280 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2281 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2282 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2283 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2284 } else { 2285 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2286 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2287 } 2288 ss->maximum_sense_size = csio->sense_len; 2289 ss->cdb_length = csio->cdb_len; 2290 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2291 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2292 } else { 2293 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2294 } 2295 2296 /* give the command to the controller */ 2297 if ((error = mly_start(mc))) { 2298 xpt_freeze_simq(sim, 1); 2299 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2300 sc->mly_qfrzn_cnt++; 2301 return(error); 2302 } 2303 2304 return(0); 2305} 2306 2307/******************************************************************************** 2308 * Check for possibly-completed commands. 2309 */ 2310static void 2311mly_cam_poll(struct cam_sim *sim) 2312{ 2313 struct mly_softc *sc = cam_sim_softc(sim); 2314 2315 debug_called(2); 2316 2317 mly_done(sc); 2318} 2319 2320/******************************************************************************** 2321 * Handle completion of a command - pass results back through the CCB 2322 */ 2323static void 2324mly_cam_complete(struct mly_command *mc) 2325{ 2326 struct mly_softc *sc = mc->mc_sc; 2327 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2328 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2329 struct mly_btl *btl; 2330 u_int8_t cmd; 2331 int bus, target; 2332 2333 debug_called(2); 2334 2335 csio->scsi_status = mc->mc_status; 2336 switch(mc->mc_status) { 2337 case SCSI_STATUS_OK: 2338 /* 2339 * In order to report logical device type and status, we overwrite 2340 * the result of the INQUIRY command to logical devices. 2341 */ 2342 bus = csio->ccb_h.sim_priv.entries[0].field; 2343 target = csio->ccb_h.target_id; 2344 /* XXX validate bus/target? */ 2345 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2346 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2347 cmd = *csio->cdb_io.cdb_ptr; 2348 } else { 2349 cmd = csio->cdb_io.cdb_bytes[0]; 2350 } 2351 if (cmd == INQUIRY) { 2352 btl = &sc->mly_btl[bus][target]; 2353 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2354 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2355 padstr(inq->revision, "", 4); 2356 } 2357 } 2358 2359 debug(2, "SCSI_STATUS_OK"); 2360 csio->ccb_h.status = CAM_REQ_CMP; 2361 break; 2362 2363 case SCSI_STATUS_CHECK_COND: 2364 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2365 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2366 bzero(&csio->sense_data, SSD_FULL_SIZE); 2367 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2368 csio->sense_len = mc->mc_sense; 2369 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2370 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2371 break; 2372 2373 case SCSI_STATUS_BUSY: 2374 debug(1, "SCSI_STATUS_BUSY"); 2375 csio->ccb_h.status = CAM_SCSI_BUSY; 2376 break; 2377 2378 default: 2379 debug(1, "unknown status 0x%x", csio->scsi_status); 2380 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2381 break; 2382 } 2383 2384 if (sc->mly_qfrzn_cnt) { 2385 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2386 sc->mly_qfrzn_cnt--; 2387 } 2388 2389 xpt_done((union ccb *)csio); 2390 mly_release_command(mc); 2391} 2392 2393/******************************************************************************** 2394 * Find a peripheral attahed at (bus),(target) 2395 */ 2396static struct cam_periph * 2397mly_find_periph(struct mly_softc *sc, int bus, int target) 2398{ 2399 struct cam_periph *periph; 2400 struct cam_path *path; 2401 int status; 2402 2403 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2404 if (status == CAM_REQ_CMP) { 2405 periph = cam_periph_find(path, NULL); 2406 xpt_free_path(path); 2407 } else { 2408 periph = NULL; 2409 } 2410 return(periph); 2411} 2412 2413/******************************************************************************** 2414 * Name the device at (bus)(target) 2415 */ 2416static int 2417mly_name_device(struct mly_softc *sc, int bus, int target) 2418{ 2419 struct cam_periph *periph; 2420 2421 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2422 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2423 return(0); 2424 } 2425 sc->mly_btl[bus][target].mb_name[0] = 0; 2426 return(ENOENT); 2427} 2428 2429/******************************************************************************** 2430 ******************************************************************************** 2431 Hardware Control 2432 ******************************************************************************** 2433 ********************************************************************************/ 2434 2435/******************************************************************************** 2436 * Handshake with the firmware while the card is being initialised. 2437 */ 2438static int 2439mly_fwhandshake(struct mly_softc *sc) 2440{ 2441 u_int8_t error, param0, param1; 2442 int spinup = 0; 2443 2444 debug_called(1); 2445 2446 /* set HM_STSACK and let the firmware initialise */ 2447 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2448 DELAY(1000); /* too short? */ 2449 2450 /* if HM_STSACK is still true, the controller is initialising */ 2451 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2452 return(0); 2453 mly_printf(sc, "controller initialisation started\n"); 2454 2455 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2456 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2457 /* check for a message */ 2458 if (MLY_ERROR_VALID(sc)) { 2459 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2460 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2461 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2462 2463 switch(error) { 2464 case MLY_MSG_SPINUP: 2465 if (!spinup) { 2466 mly_printf(sc, "drive spinup in progress\n"); 2467 spinup = 1; /* only print this once (should print drive being spun?) */ 2468 } 2469 break; 2470 case MLY_MSG_RACE_RECOVERY_FAIL: 2471 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2472 break; 2473 case MLY_MSG_RACE_IN_PROGRESS: 2474 mly_printf(sc, "mirror race recovery in progress\n"); 2475 break; 2476 case MLY_MSG_RACE_ON_CRITICAL: 2477 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2478 break; 2479 case MLY_MSG_PARITY_ERROR: 2480 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2481 return(ENXIO); 2482 default: 2483 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2484 } 2485 } 2486 } 2487 return(0); 2488} 2489 2490/******************************************************************************** 2491 ******************************************************************************** 2492 Debugging and Diagnostics 2493 ******************************************************************************** 2494 ********************************************************************************/ 2495 2496/******************************************************************************** 2497 * Print some information about the controller. 2498 */ 2499static void 2500mly_describe_controller(struct mly_softc *sc) 2501{ 2502 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2503 2504 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2505 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2506 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2507 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2508 mi->memory_size); 2509 2510 if (bootverbose) { 2511 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2512 mly_describe_code(mly_table_oemname, mi->oem_information), 2513 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2514 mi->interface_speed, mi->interface_width, mi->interface_name); 2515 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2516 mi->memory_size, mi->memory_speed, mi->memory_width, 2517 mly_describe_code(mly_table_memorytype, mi->memory_type), 2518 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2519 mi->cache_size); 2520 mly_printf(sc, "CPU: %s @ %dMHz\n", 2521 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2522 if (mi->l2cache_size != 0) 2523 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2524 if (mi->exmemory_size != 0) 2525 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2526 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2527 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2528 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2529 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2530 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2531 mi->maximum_block_count, mi->maximum_sg_entries); 2532 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2533 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2534 mly_printf(sc, "physical devices present %d\n", 2535 mi->physical_devices_present); 2536 mly_printf(sc, "physical disks present/offline %d/%d\n", 2537 mi->physical_disks_present, mi->physical_disks_offline); 2538 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2539 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2540 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2541 mi->virtual_channels_possible); 2542 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2543 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2544 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2545 } 2546} 2547 2548#ifdef MLY_DEBUG 2549/******************************************************************************** 2550 * Print some controller state 2551 */ 2552static void 2553mly_printstate(struct mly_softc *sc) 2554{ 2555 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2556 MLY_GET_REG(sc, sc->mly_idbr), 2557 MLY_GET_REG(sc, sc->mly_odbr), 2558 MLY_GET_REG(sc, sc->mly_error_status), 2559 sc->mly_idbr, 2560 sc->mly_odbr, 2561 sc->mly_error_status); 2562 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2563 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2564 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2565 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2566 MLY_GET_REG(sc, sc->mly_command_mailbox), 2567 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2568 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2569 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2570 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2571 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2572 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2573 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2574 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2575 MLY_GET_REG(sc, sc->mly_status_mailbox), 2576 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2577 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2578 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2579 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2580 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2581 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2582 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2583 mly_printf(sc, " %04x %08x\n", 2584 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2585 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2586} 2587 2588struct mly_softc *mly_softc0 = NULL; 2589void 2590mly_printstate0(void) 2591{ 2592 if (mly_softc0 != NULL) 2593 mly_printstate(mly_softc0); 2594} 2595 2596/******************************************************************************** 2597 * Print a command 2598 */ 2599static void 2600mly_print_command(struct mly_command *mc) 2601{ 2602 struct mly_softc *sc = mc->mc_sc; 2603 2604 mly_printf(sc, "COMMAND @ %p\n", mc); 2605 mly_printf(sc, " slot %d\n", mc->mc_slot); 2606 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2607 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2608 mly_printf(sc, " resid %d\n", mc->mc_resid); 2609 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2610 if (mc->mc_packet != NULL) 2611 mly_print_packet(mc); 2612 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2613 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2614 mly_printf(sc, " complete %p\n", mc->mc_complete); 2615 mly_printf(sc, " private %p\n", mc->mc_private); 2616} 2617 2618/******************************************************************************** 2619 * Print a command packet 2620 */ 2621static void 2622mly_print_packet(struct mly_command *mc) 2623{ 2624 struct mly_softc *sc = mc->mc_sc; 2625 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2626 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2627 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2628 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2629 int transfer; 2630 2631 mly_printf(sc, " command_id %d\n", ge->command_id); 2632 mly_printf(sc, " opcode %d\n", ge->opcode); 2633 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2634 ge->command_control.force_unit_access, 2635 ge->command_control.disable_page_out, 2636 ge->command_control.extended_sg_table, 2637 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2638 ge->command_control.no_auto_sense, 2639 ge->command_control.disable_disconnect); 2640 mly_printf(sc, " data_size %d\n", ge->data_size); 2641 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2642 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2643 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2644 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2645 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2646 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2647 mly_printf(sc, " timeout %d %s\n", 2648 ge->timeout.value, 2649 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2650 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2651 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2652 switch(ge->opcode) { 2653 case MDACMD_SCSIPT: 2654 case MDACMD_SCSI: 2655 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2656 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2657 transfer = 1; 2658 break; 2659 case MDACMD_SCSILC: 2660 case MDACMD_SCSILCPT: 2661 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2662 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2663 transfer = 1; 2664 break; 2665 case MDACMD_IOCTL: 2666 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2667 switch(io->sub_ioctl) { 2668 case MDACIOCTL_SETMEMORYMAILBOX: 2669 mly_printf(sc, " health_buffer_size %d\n", 2670 io->param.setmemorymailbox.health_buffer_size); 2671 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2672 io->param.setmemorymailbox.health_buffer_physaddr); 2673 mly_printf(sc, " command_mailbox 0x%llx\n", 2674 io->param.setmemorymailbox.command_mailbox_physaddr); 2675 mly_printf(sc, " status_mailbox 0x%llx\n", 2676 io->param.setmemorymailbox.status_mailbox_physaddr); 2677 transfer = 0; 2678 break; 2679 2680 case MDACIOCTL_SETREALTIMECLOCK: 2681 case MDACIOCTL_GETHEALTHSTATUS: 2682 case MDACIOCTL_GETCONTROLLERINFO: 2683 case MDACIOCTL_GETLOGDEVINFOVALID: 2684 case MDACIOCTL_GETPHYSDEVINFOVALID: 2685 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2686 case MDACIOCTL_GETLOGDEVSTATISTICS: 2687 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2688 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2689 case MDACIOCTL_CREATENEWCONF: 2690 case MDACIOCTL_ADDNEWCONF: 2691 case MDACIOCTL_GETDEVCONFINFO: 2692 case MDACIOCTL_GETFREESPACELIST: 2693 case MDACIOCTL_MORE: 2694 case MDACIOCTL_SETPHYSDEVPARAMETER: 2695 case MDACIOCTL_GETPHYSDEVPARAMETER: 2696 case MDACIOCTL_GETLOGDEVPARAMETER: 2697 case MDACIOCTL_SETLOGDEVPARAMETER: 2698 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2699 transfer = 1; 2700 break; 2701 2702 case MDACIOCTL_GETEVENT: 2703 mly_printf(sc, " event %d\n", 2704 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2705 transfer = 1; 2706 break; 2707 2708 case MDACIOCTL_SETRAIDDEVSTATE: 2709 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2710 transfer = 0; 2711 break; 2712 2713 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2714 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2715 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2716 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2717 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2718 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2719 transfer = 0; 2720 break; 2721 2722 case MDACIOCTL_GETGROUPCONFINFO: 2723 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2724 transfer = 1; 2725 break; 2726 2727 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2728 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2729 case MDACIOCTL_STARTDISOCVERY: 2730 case MDACIOCTL_INITPHYSDEVSTART: 2731 case MDACIOCTL_INITPHYSDEVSTOP: 2732 case MDACIOCTL_INITRAIDDEVSTART: 2733 case MDACIOCTL_INITRAIDDEVSTOP: 2734 case MDACIOCTL_REBUILDRAIDDEVSTART: 2735 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2736 case MDACIOCTL_MAKECONSISTENTDATASTART: 2737 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2738 case MDACIOCTL_CONSISTENCYCHECKSTART: 2739 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2740 case MDACIOCTL_RESETDEVICE: 2741 case MDACIOCTL_FLUSHDEVICEDATA: 2742 case MDACIOCTL_PAUSEDEVICE: 2743 case MDACIOCTL_UNPAUSEDEVICE: 2744 case MDACIOCTL_LOCATEDEVICE: 2745 case MDACIOCTL_SETMASTERSLAVEMODE: 2746 case MDACIOCTL_DELETERAIDDEV: 2747 case MDACIOCTL_REPLACEINTERNALDEV: 2748 case MDACIOCTL_CLEARCONF: 2749 case MDACIOCTL_GETCONTROLLERPARAMETER: 2750 case MDACIOCTL_SETCONTRLLERPARAMETER: 2751 case MDACIOCTL_CLEARCONFSUSPMODE: 2752 case MDACIOCTL_STOREIMAGE: 2753 case MDACIOCTL_READIMAGE: 2754 case MDACIOCTL_FLASHIMAGES: 2755 case MDACIOCTL_RENAMERAIDDEV: 2756 default: /* no idea what to print */ 2757 transfer = 0; 2758 break; 2759 } 2760 break; 2761 2762 case MDACMD_IOCTLCHECK: 2763 case MDACMD_MEMCOPY: 2764 default: 2765 transfer = 0; 2766 break; /* print nothing */ 2767 } 2768 if (transfer) { 2769 if (ge->command_control.extended_sg_table) { 2770 mly_printf(sc, " sg table 0x%llx/%d\n", 2771 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2772 } else { 2773 mly_printf(sc, " 0000 0x%llx/%lld\n", 2774 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2775 mly_printf(sc, " 0001 0x%llx/%lld\n", 2776 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2777 } 2778 } 2779} 2780 2781/******************************************************************************** 2782 * Panic in a slightly informative fashion 2783 */ 2784static void 2785mly_panic(struct mly_softc *sc, char *reason) 2786{ 2787 mly_printstate(sc); 2788 panic(reason); 2789} 2790 2791/******************************************************************************** 2792 * Print queue statistics, callable from DDB. 2793 */ 2794void 2795mly_print_controller(int controller) 2796{ 2797 struct mly_softc *sc; 2798 2799 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2800 printf("mly: controller %d invalid\n", controller); 2801 } else { 2802 device_printf(sc->mly_dev, "queue curr max\n"); 2803 device_printf(sc->mly_dev, "free %04d/%04d\n", 2804 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2805 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2806 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2807 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2808 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2809 } 2810} 2811#endif 2812 2813/******************************************************************************** 2814 ******************************************************************************** 2815 Control device interface 2816 ******************************************************************************** 2817 ********************************************************************************/ 2818 2819/******************************************************************************** 2820 * Accept an open operation on the control device. 2821 */ 2822static int 2823mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td) 2824{ 2825 struct mly_softc *sc = dev->si_drv1; 2826 2827 MLY_LOCK(sc); 2828 sc->mly_state |= MLY_STATE_OPEN; 2829 MLY_UNLOCK(sc); 2830 return(0); 2831} 2832 2833/******************************************************************************** 2834 * Accept the last close on the control device. 2835 */ 2836static int 2837mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td) 2838{ 2839 struct mly_softc *sc = dev->si_drv1; 2840 2841 MLY_LOCK(sc); 2842 sc->mly_state &= ~MLY_STATE_OPEN; 2843 MLY_UNLOCK(sc); 2844 return (0); 2845} 2846 2847/******************************************************************************** 2848 * Handle controller-specific control operations. 2849 */ 2850static int 2851mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 2852 int32_t flag, struct thread *td) 2853{ 2854 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2855 struct mly_user_command *uc = (struct mly_user_command *)addr; 2856 struct mly_user_health *uh = (struct mly_user_health *)addr; 2857 2858 switch(cmd) { 2859 case MLYIO_COMMAND: 2860 return(mly_user_command(sc, uc)); 2861 case MLYIO_HEALTH: 2862 return(mly_user_health(sc, uh)); 2863 default: 2864 return(ENOIOCTL); 2865 } 2866} 2867 2868/******************************************************************************** 2869 * Execute a command passed in from userspace. 2870 * 2871 * The control structure contains the actual command for the controller, as well 2872 * as the user-space data pointer and data size, and an optional sense buffer 2873 * size/pointer. On completion, the data size is adjusted to the command 2874 * residual, and the sense buffer size to the size of the returned sense data. 2875 * 2876 */ 2877static int 2878mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2879{ 2880 struct mly_command *mc; 2881 int error; 2882 2883 /* allocate a command */ 2884 MLY_LOCK(sc); 2885 if (mly_alloc_command(sc, &mc)) { 2886 MLY_UNLOCK(sc); 2887 return (ENOMEM); /* XXX Linux version will wait for a command */ 2888 } 2889 MLY_UNLOCK(sc); 2890 2891 /* handle data size/direction */ 2892 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2893 if (mc->mc_length > 0) { 2894 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 2895 error = ENOMEM; 2896 goto out; 2897 } 2898 } 2899 if (uc->DataTransferLength > 0) { 2900 mc->mc_flags |= MLY_CMD_DATAIN; 2901 bzero(mc->mc_data, mc->mc_length); 2902 } 2903 if (uc->DataTransferLength < 0) { 2904 mc->mc_flags |= MLY_CMD_DATAOUT; 2905 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2906 goto out; 2907 } 2908 2909 /* copy the controller command */ 2910 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2911 2912 /* clear command completion handler so that we get woken up */ 2913 mc->mc_complete = NULL; 2914 2915 /* execute the command */ 2916 MLY_LOCK(sc); 2917 if ((error = mly_start(mc)) != 0) { 2918 MLY_UNLOCK(sc); 2919 goto out; 2920 } 2921 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2922 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlyioctl", 0); 2923 MLY_UNLOCK(sc); 2924 2925 /* return the data to userspace */ 2926 if (uc->DataTransferLength > 0) 2927 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2928 goto out; 2929 2930 /* return the sense buffer to userspace */ 2931 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2932 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2933 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2934 goto out; 2935 } 2936 2937 /* return command results to userspace (caller will copy out) */ 2938 uc->DataTransferLength = mc->mc_resid; 2939 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2940 uc->CommandStatus = mc->mc_status; 2941 error = 0; 2942 2943 out: 2944 if (mc->mc_data != NULL) 2945 free(mc->mc_data, M_DEVBUF); 2946 MLY_LOCK(sc); 2947 mly_release_command(mc); 2948 MLY_UNLOCK(sc); 2949 return(error); 2950} 2951 2952/******************************************************************************** 2953 * Return health status to userspace. If the health change index in the user 2954 * structure does not match that currently exported by the controller, we 2955 * return the current status immediately. Otherwise, we block until either 2956 * interrupted or new status is delivered. 2957 */ 2958static int 2959mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2960{ 2961 struct mly_health_status mh; 2962 int error; 2963 2964 /* fetch the current health status from userspace */ 2965 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2966 return(error); 2967 2968 /* spin waiting for a status update */ 2969 MLY_LOCK(sc); 2970 error = EWOULDBLOCK; 2971 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2972 error = mtx_sleep(&sc->mly_event_change, &sc->mly_lock, PRIBIO | PCATCH, 2973 "mlyhealth", 0); 2974 mh = sc->mly_mmbox->mmm_health.status; 2975 MLY_UNLOCK(sc); 2976 2977 /* copy the controller's health status buffer out */ 2978 error = copyout(&mh, uh->HealthStatusBuffer, sizeof(mh)); 2979 return(error); 2980} 2981 2982#ifdef MLY_DEBUG 2983static void 2984mly_timeout(void *arg) 2985{ 2986 struct mly_softc *sc; 2987 struct mly_command *mc; 2988 int deadline; 2989 2990 sc = arg; 2991 MLY_ASSERT_LOCKED(sc); 2992 deadline = time_second - MLY_CMD_TIMEOUT; 2993 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2994 if ((mc->mc_timestamp < deadline)) { 2995 device_printf(sc->mly_dev, 2996 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2997 (int)(time_second - mc->mc_timestamp)); 2998 } 2999 } 3000 3001 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc); 3002} 3003#endif 3004