1/*- 2 * Copyright (c) 2000, 2001 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: stable/11/sys/dev/mly/mly.c 335138 2018-06-14 14:46:20Z mav $ 28 */ 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/malloc.h> 33#include <sys/kernel.h> 34#include <sys/bus.h> 35#include <sys/conf.h> 36#include <sys/ctype.h> 37#include <sys/ioccom.h> 38#include <sys/stat.h> 39 40#include <machine/bus.h> 41#include <machine/resource.h> 42#include <sys/rman.h> 43 44#include <cam/cam.h> 45#include <cam/cam_ccb.h> 46#include <cam/cam_periph.h> 47#include <cam/cam_sim.h> 48#include <cam/cam_xpt_sim.h> 49#include <cam/scsi/scsi_all.h> 50#include <cam/scsi/scsi_message.h> 51 52#include <dev/pci/pcireg.h> 53#include <dev/pci/pcivar.h> 54 55#include <dev/mly/mlyreg.h> 56#include <dev/mly/mlyio.h> 57#include <dev/mly/mlyvar.h> 58#include <dev/mly/mly_tables.h> 59 60static int mly_probe(device_t dev); 61static int mly_attach(device_t dev); 62static int mly_pci_attach(struct mly_softc *sc); 63static int mly_detach(device_t dev); 64static int mly_shutdown(device_t dev); 65static void mly_intr(void *arg); 66 67static int mly_sg_map(struct mly_softc *sc); 68static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 69static int mly_mmbox_map(struct mly_softc *sc); 70static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 71static void mly_free(struct mly_softc *sc); 72 73static int mly_get_controllerinfo(struct mly_softc *sc); 74static void mly_scan_devices(struct mly_softc *sc); 75static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 76static void mly_complete_rescan(struct mly_command *mc); 77static int mly_get_eventstatus(struct mly_softc *sc); 78static int mly_enable_mmbox(struct mly_softc *sc); 79static int mly_flush(struct mly_softc *sc); 80static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 81 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 82static void mly_check_event(struct mly_softc *sc); 83static void mly_fetch_event(struct mly_softc *sc); 84static void mly_complete_event(struct mly_command *mc); 85static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 86static void mly_periodic(void *data); 87 88static int mly_immediate_command(struct mly_command *mc); 89static int mly_start(struct mly_command *mc); 90static void mly_done(struct mly_softc *sc); 91static void mly_complete(struct mly_softc *sc); 92static void mly_complete_handler(void *context, int pending); 93 94static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 95static void mly_release_command(struct mly_command *mc); 96static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 97static int mly_alloc_commands(struct mly_softc *sc); 98static void mly_release_commands(struct mly_softc *sc); 99static void mly_map_command(struct mly_command *mc); 100static void mly_unmap_command(struct mly_command *mc); 101 102static int mly_cam_attach(struct mly_softc *sc); 103static void mly_cam_detach(struct mly_softc *sc); 104static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 105static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 106static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 107static void mly_cam_poll(struct cam_sim *sim); 108static void mly_cam_complete(struct mly_command *mc); 109static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 110static int mly_name_device(struct mly_softc *sc, int bus, int target); 111 112static int mly_fwhandshake(struct mly_softc *sc); 113 114static void mly_describe_controller(struct mly_softc *sc); 115#ifdef MLY_DEBUG 116static void mly_printstate(struct mly_softc *sc); 117static void mly_print_command(struct mly_command *mc); 118static void mly_print_packet(struct mly_command *mc); 119static void mly_panic(struct mly_softc *sc, char *reason); 120static void mly_timeout(void *arg); 121#endif 122void mly_print_controller(int controller); 123 124 125static d_open_t mly_user_open; 126static d_close_t mly_user_close; 127static d_ioctl_t mly_user_ioctl; 128static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 129static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 130 131#define MLY_CMD_TIMEOUT 20 132 133static device_method_t mly_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_probe, mly_probe), 136 DEVMETHOD(device_attach, mly_attach), 137 DEVMETHOD(device_detach, mly_detach), 138 DEVMETHOD(device_shutdown, mly_shutdown), 139 { 0, 0 } 140}; 141 142static driver_t mly_pci_driver = { 143 "mly", 144 mly_methods, 145 sizeof(struct mly_softc) 146}; 147 148static devclass_t mly_devclass; 149DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 150MODULE_DEPEND(mly, pci, 1, 1, 1); 151MODULE_DEPEND(mly, cam, 1, 1, 1); 152 153static struct cdevsw mly_cdevsw = { 154 .d_version = D_VERSION, 155 .d_open = mly_user_open, 156 .d_close = mly_user_close, 157 .d_ioctl = mly_user_ioctl, 158 .d_name = "mly", 159}; 160 161/******************************************************************************** 162 ******************************************************************************** 163 Device Interface 164 ******************************************************************************** 165 ********************************************************************************/ 166 167static struct mly_ident 168{ 169 u_int16_t vendor; 170 u_int16_t device; 171 u_int16_t subvendor; 172 u_int16_t subdevice; 173 int hwif; 174 char *desc; 175} mly_identifiers[] = { 176 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 177 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 178 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 179 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 180 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 181 {0, 0, 0, 0, 0, 0} 182}; 183 184/******************************************************************************** 185 * Compare the provided PCI device with the list we support. 186 */ 187static int 188mly_probe(device_t dev) 189{ 190 struct mly_ident *m; 191 192 debug_called(1); 193 194 for (m = mly_identifiers; m->vendor != 0; m++) { 195 if ((m->vendor == pci_get_vendor(dev)) && 196 (m->device == pci_get_device(dev)) && 197 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 198 (m->subdevice == pci_get_subdevice(dev))))) { 199 200 device_set_desc(dev, m->desc); 201 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 202 } 203 } 204 return(ENXIO); 205} 206 207/******************************************************************************** 208 * Initialise the controller and softc 209 */ 210static int 211mly_attach(device_t dev) 212{ 213 struct mly_softc *sc = device_get_softc(dev); 214 int error; 215 216 debug_called(1); 217 218 sc->mly_dev = dev; 219 mtx_init(&sc->mly_lock, "mly", NULL, MTX_DEF); 220 callout_init_mtx(&sc->mly_periodic, &sc->mly_lock, 0); 221 222#ifdef MLY_DEBUG 223 callout_init_mtx(&sc->mly_timeout, &sc->mly_lock, 0); 224 if (device_get_unit(sc->mly_dev) == 0) 225 mly_softc0 = sc; 226#endif 227 228 /* 229 * Do PCI-specific initialisation. 230 */ 231 if ((error = mly_pci_attach(sc)) != 0) 232 goto out; 233 234 /* 235 * Initialise per-controller queues. 236 */ 237 mly_initq_free(sc); 238 mly_initq_busy(sc); 239 mly_initq_complete(sc); 240 241 /* 242 * Initialise command-completion task. 243 */ 244 TASK_INIT(&sc->mly_task_complete, 0, mly_complete_handler, sc); 245 246 /* disable interrupts before we start talking to the controller */ 247 MLY_MASK_INTERRUPTS(sc); 248 249 /* 250 * Wait for the controller to come ready, handshake with the firmware if required. 251 * This is typically only necessary on platforms where the controller BIOS does not 252 * run. 253 */ 254 if ((error = mly_fwhandshake(sc))) 255 goto out; 256 257 /* 258 * Allocate initial command buffers. 259 */ 260 if ((error = mly_alloc_commands(sc))) 261 goto out; 262 263 /* 264 * Obtain controller feature information 265 */ 266 MLY_LOCK(sc); 267 error = mly_get_controllerinfo(sc); 268 MLY_UNLOCK(sc); 269 if (error) 270 goto out; 271 272 /* 273 * Reallocate command buffers now we know how many we want. 274 */ 275 mly_release_commands(sc); 276 if ((error = mly_alloc_commands(sc))) 277 goto out; 278 279 /* 280 * Get the current event counter for health purposes, populate the initial 281 * health status buffer. 282 */ 283 MLY_LOCK(sc); 284 error = mly_get_eventstatus(sc); 285 286 /* 287 * Enable memory-mailbox mode. 288 */ 289 if (error == 0) 290 error = mly_enable_mmbox(sc); 291 MLY_UNLOCK(sc); 292 if (error) 293 goto out; 294 295 /* 296 * Attach to CAM. 297 */ 298 if ((error = mly_cam_attach(sc))) 299 goto out; 300 301 /* 302 * Print a little information about the controller 303 */ 304 mly_describe_controller(sc); 305 306 /* 307 * Mark all attached devices for rescan. 308 */ 309 MLY_LOCK(sc); 310 mly_scan_devices(sc); 311 312 /* 313 * Instigate the first status poll immediately. Rescan completions won't 314 * happen until interrupts are enabled, which should still be before 315 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 316 */ 317 mly_periodic((void *)sc); 318 MLY_UNLOCK(sc); 319 320 /* 321 * Create the control device. 322 */ 323 sc->mly_dev_t = make_dev(&mly_cdevsw, 0, UID_ROOT, GID_OPERATOR, 324 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev)); 325 sc->mly_dev_t->si_drv1 = sc; 326 327 /* enable interrupts now */ 328 MLY_UNMASK_INTERRUPTS(sc); 329 330#ifdef MLY_DEBUG 331 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc); 332#endif 333 334 out: 335 if (error != 0) 336 mly_free(sc); 337 return(error); 338} 339 340/******************************************************************************** 341 * Perform PCI-specific initialisation. 342 */ 343static int 344mly_pci_attach(struct mly_softc *sc) 345{ 346 int i, error; 347 348 debug_called(1); 349 350 /* assume failure is 'not configured' */ 351 error = ENXIO; 352 353 /* 354 * Verify that the adapter is correctly set up in PCI space. 355 */ 356 pci_enable_busmaster(sc->mly_dev); 357 358 /* 359 * Allocate the PCI register window. 360 */ 361 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 362 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 363 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 364 mly_printf(sc, "can't allocate register window\n"); 365 goto fail; 366 } 367 368 /* 369 * Allocate and connect our interrupt. 370 */ 371 sc->mly_irq_rid = 0; 372 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 373 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 374 mly_printf(sc, "can't allocate interrupt\n"); 375 goto fail; 376 } 377 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY | INTR_MPSAFE, NULL, mly_intr, sc, &sc->mly_intr)) { 378 mly_printf(sc, "can't set up interrupt\n"); 379 goto fail; 380 } 381 382 /* assume failure is 'out of memory' */ 383 error = ENOMEM; 384 385 /* 386 * Allocate the parent bus DMA tag appropriate for our PCI interface. 387 * 388 * Note that all of these controllers are 64-bit capable. 389 */ 390 if (bus_dma_tag_create(bus_get_dma_tag(sc->mly_dev),/* PCI parent */ 391 1, 0, /* alignment, boundary */ 392 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 393 BUS_SPACE_MAXADDR, /* highaddr */ 394 NULL, NULL, /* filter, filterarg */ 395 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 396 BUS_SPACE_UNRESTRICTED, /* nsegments */ 397 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 398 BUS_DMA_ALLOCNOW, /* flags */ 399 NULL, /* lockfunc */ 400 NULL, /* lockarg */ 401 &sc->mly_parent_dmat)) { 402 mly_printf(sc, "can't allocate parent DMA tag\n"); 403 goto fail; 404 } 405 406 /* 407 * Create DMA tag for mapping buffers into controller-addressable space. 408 */ 409 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 410 1, 0, /* alignment, boundary */ 411 BUS_SPACE_MAXADDR, /* lowaddr */ 412 BUS_SPACE_MAXADDR, /* highaddr */ 413 NULL, NULL, /* filter, filterarg */ 414 DFLTPHYS, /* maxsize */ 415 MLY_MAX_SGENTRIES, /* nsegments */ 416 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 417 0, /* flags */ 418 busdma_lock_mutex, /* lockfunc */ 419 &sc->mly_lock, /* lockarg */ 420 &sc->mly_buffer_dmat)) { 421 mly_printf(sc, "can't allocate buffer DMA tag\n"); 422 goto fail; 423 } 424 425 /* 426 * Initialise the DMA tag for command packets. 427 */ 428 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 429 1, 0, /* alignment, boundary */ 430 BUS_SPACE_MAXADDR, /* lowaddr */ 431 BUS_SPACE_MAXADDR, /* highaddr */ 432 NULL, NULL, /* filter, filterarg */ 433 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 434 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 435 BUS_DMA_ALLOCNOW, /* flags */ 436 NULL, NULL, /* lockfunc, lockarg */ 437 &sc->mly_packet_dmat)) { 438 mly_printf(sc, "can't allocate command packet DMA tag\n"); 439 goto fail; 440 } 441 442 /* 443 * Detect the hardware interface version 444 */ 445 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 446 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 447 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 448 sc->mly_hwif = mly_identifiers[i].hwif; 449 switch(sc->mly_hwif) { 450 case MLY_HWIF_I960RX: 451 debug(1, "set hardware up for i960RX"); 452 sc->mly_doorbell_true = 0x00; 453 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 454 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 455 sc->mly_idbr = MLY_I960RX_IDBR; 456 sc->mly_odbr = MLY_I960RX_ODBR; 457 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 458 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 459 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 460 break; 461 case MLY_HWIF_STRONGARM: 462 debug(1, "set hardware up for StrongARM"); 463 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 464 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 465 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 466 sc->mly_idbr = MLY_STRONGARM_IDBR; 467 sc->mly_odbr = MLY_STRONGARM_ODBR; 468 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 469 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 470 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 471 break; 472 } 473 break; 474 } 475 } 476 477 /* 478 * Create the scatter/gather mappings. 479 */ 480 if ((error = mly_sg_map(sc))) 481 goto fail; 482 483 /* 484 * Allocate and map the memory mailbox 485 */ 486 if ((error = mly_mmbox_map(sc))) 487 goto fail; 488 489 error = 0; 490 491fail: 492 return(error); 493} 494 495/******************************************************************************** 496 * Shut the controller down and detach all our resources. 497 */ 498static int 499mly_detach(device_t dev) 500{ 501 int error; 502 503 if ((error = mly_shutdown(dev)) != 0) 504 return(error); 505 506 mly_free(device_get_softc(dev)); 507 return(0); 508} 509 510/******************************************************************************** 511 * Bring the controller to a state where it can be safely left alone. 512 * 513 * Note that it should not be necessary to wait for any outstanding commands, 514 * as they should be completed prior to calling here. 515 * 516 * XXX this applies for I/O, but not status polls; we should beware of 517 * the case where a status command is running while we detach. 518 */ 519static int 520mly_shutdown(device_t dev) 521{ 522 struct mly_softc *sc = device_get_softc(dev); 523 524 debug_called(1); 525 526 MLY_LOCK(sc); 527 if (sc->mly_state & MLY_STATE_OPEN) { 528 MLY_UNLOCK(sc); 529 return(EBUSY); 530 } 531 532 /* kill the periodic event */ 533 callout_stop(&sc->mly_periodic); 534#ifdef MLY_DEBUG 535 callout_stop(&sc->mly_timeout); 536#endif 537 538 /* flush controller */ 539 mly_printf(sc, "flushing cache..."); 540 printf("%s\n", mly_flush(sc) ? "failed" : "done"); 541 542 MLY_MASK_INTERRUPTS(sc); 543 MLY_UNLOCK(sc); 544 545 return(0); 546} 547 548/******************************************************************************* 549 * Take an interrupt, or be poked by other code to look for interrupt-worthy 550 * status. 551 */ 552static void 553mly_intr(void *arg) 554{ 555 struct mly_softc *sc = (struct mly_softc *)arg; 556 557 debug_called(2); 558 559 MLY_LOCK(sc); 560 mly_done(sc); 561 MLY_UNLOCK(sc); 562}; 563 564/******************************************************************************** 565 ******************************************************************************** 566 Bus-dependant Resource Management 567 ******************************************************************************** 568 ********************************************************************************/ 569 570/******************************************************************************** 571 * Allocate memory for the scatter/gather tables 572 */ 573static int 574mly_sg_map(struct mly_softc *sc) 575{ 576 size_t segsize; 577 578 debug_called(1); 579 580 /* 581 * Create a single tag describing a region large enough to hold all of 582 * the s/g lists we will need. 583 */ 584 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 585 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 586 1, 0, /* alignment,boundary */ 587 BUS_SPACE_MAXADDR, /* lowaddr */ 588 BUS_SPACE_MAXADDR, /* highaddr */ 589 NULL, NULL, /* filter, filterarg */ 590 segsize, 1, /* maxsize, nsegments */ 591 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 592 BUS_DMA_ALLOCNOW, /* flags */ 593 NULL, NULL, /* lockfunc, lockarg */ 594 &sc->mly_sg_dmat)) { 595 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 596 return(ENOMEM); 597 } 598 599 /* 600 * Allocate enough s/g maps for all commands and permanently map them into 601 * controller-visible space. 602 * 603 * XXX this assumes we can get enough space for all the s/g maps in one 604 * contiguous slab. 605 */ 606 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 607 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 608 mly_printf(sc, "can't allocate s/g table\n"); 609 return(ENOMEM); 610 } 611 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 612 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 613 return (ENOMEM); 614 return(0); 615} 616 617/******************************************************************************** 618 * Save the physical address of the base of the s/g table. 619 */ 620static void 621mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 622{ 623 struct mly_softc *sc = (struct mly_softc *)arg; 624 625 debug_called(1); 626 627 /* save base of s/g table's address in bus space */ 628 sc->mly_sg_busaddr = segs->ds_addr; 629} 630 631/******************************************************************************** 632 * Allocate memory for the memory-mailbox interface 633 */ 634static int 635mly_mmbox_map(struct mly_softc *sc) 636{ 637 638 /* 639 * Create a DMA tag for a single contiguous region large enough for the 640 * memory mailbox structure. 641 */ 642 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 643 1, 0, /* alignment,boundary */ 644 BUS_SPACE_MAXADDR, /* lowaddr */ 645 BUS_SPACE_MAXADDR, /* highaddr */ 646 NULL, NULL, /* filter, filterarg */ 647 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 648 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 649 BUS_DMA_ALLOCNOW, /* flags */ 650 NULL, NULL, /* lockfunc, lockarg */ 651 &sc->mly_mmbox_dmat)) { 652 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 653 return(ENOMEM); 654 } 655 656 /* 657 * Allocate the buffer 658 */ 659 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 660 mly_printf(sc, "can't allocate memory mailbox\n"); 661 return(ENOMEM); 662 } 663 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 664 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 665 BUS_DMA_NOWAIT) != 0) 666 return (ENOMEM); 667 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 668 return(0); 669 670} 671 672/******************************************************************************** 673 * Save the physical address of the memory mailbox 674 */ 675static void 676mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 677{ 678 struct mly_softc *sc = (struct mly_softc *)arg; 679 680 debug_called(1); 681 682 sc->mly_mmbox_busaddr = segs->ds_addr; 683} 684 685/******************************************************************************** 686 * Free all of the resources associated with (sc) 687 * 688 * Should not be called if the controller is active. 689 */ 690static void 691mly_free(struct mly_softc *sc) 692{ 693 694 debug_called(1); 695 696 /* Remove the management device */ 697 destroy_dev(sc->mly_dev_t); 698 699 if (sc->mly_intr) 700 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 701 callout_drain(&sc->mly_periodic); 702#ifdef MLY_DEBUG 703 callout_drain(&sc->mly_timeout); 704#endif 705 706 /* detach from CAM */ 707 mly_cam_detach(sc); 708 709 /* release command memory */ 710 mly_release_commands(sc); 711 712 /* throw away the controllerinfo structure */ 713 if (sc->mly_controllerinfo != NULL) 714 free(sc->mly_controllerinfo, M_DEVBUF); 715 716 /* throw away the controllerparam structure */ 717 if (sc->mly_controllerparam != NULL) 718 free(sc->mly_controllerparam, M_DEVBUF); 719 720 /* destroy data-transfer DMA tag */ 721 if (sc->mly_buffer_dmat) 722 bus_dma_tag_destroy(sc->mly_buffer_dmat); 723 724 /* free and destroy DMA memory and tag for s/g lists */ 725 if (sc->mly_sg_table) { 726 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 727 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 728 } 729 if (sc->mly_sg_dmat) 730 bus_dma_tag_destroy(sc->mly_sg_dmat); 731 732 /* free and destroy DMA memory and tag for memory mailbox */ 733 if (sc->mly_mmbox) { 734 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 735 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 736 } 737 if (sc->mly_mmbox_dmat) 738 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 739 740 /* disconnect the interrupt handler */ 741 if (sc->mly_irq != NULL) 742 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 743 744 /* destroy the parent DMA tag */ 745 if (sc->mly_parent_dmat) 746 bus_dma_tag_destroy(sc->mly_parent_dmat); 747 748 /* release the register window mapping */ 749 if (sc->mly_regs_resource != NULL) 750 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 751 752 mtx_destroy(&sc->mly_lock); 753} 754 755/******************************************************************************** 756 ******************************************************************************** 757 Command Wrappers 758 ******************************************************************************** 759 ********************************************************************************/ 760 761/******************************************************************************** 762 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 763 */ 764static int 765mly_get_controllerinfo(struct mly_softc *sc) 766{ 767 struct mly_command_ioctl mci; 768 u_int8_t status; 769 int error; 770 771 debug_called(1); 772 773 if (sc->mly_controllerinfo != NULL) 774 free(sc->mly_controllerinfo, M_DEVBUF); 775 776 /* build the getcontrollerinfo ioctl and send it */ 777 bzero(&mci, sizeof(mci)); 778 sc->mly_controllerinfo = NULL; 779 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 780 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 781 &status, NULL, NULL))) 782 return(error); 783 if (status != 0) 784 return(EIO); 785 786 if (sc->mly_controllerparam != NULL) 787 free(sc->mly_controllerparam, M_DEVBUF); 788 789 /* build the getcontrollerparameter ioctl and send it */ 790 bzero(&mci, sizeof(mci)); 791 sc->mly_controllerparam = NULL; 792 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 793 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 794 &status, NULL, NULL))) 795 return(error); 796 if (status != 0) 797 return(EIO); 798 799 return(0); 800} 801 802/******************************************************************************** 803 * Schedule all possible devices for a rescan. 804 * 805 */ 806static void 807mly_scan_devices(struct mly_softc *sc) 808{ 809 int bus, target; 810 811 debug_called(1); 812 813 /* 814 * Clear any previous BTL information. 815 */ 816 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 817 818 /* 819 * Mark all devices as requiring a rescan, and let the next 820 * periodic scan collect them. 821 */ 822 for (bus = 0; bus < sc->mly_cam_channels; bus++) 823 if (MLY_BUS_IS_VALID(sc, bus)) 824 for (target = 0; target < MLY_MAX_TARGETS; target++) 825 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 826 827} 828 829/******************************************************************************** 830 * Rescan a device, possibly as a consequence of getting an event which suggests 831 * that it may have changed. 832 * 833 * If we suffer resource starvation, we can abandon the rescan as we'll be 834 * retried. 835 */ 836static void 837mly_rescan_btl(struct mly_softc *sc, int bus, int target) 838{ 839 struct mly_command *mc; 840 struct mly_command_ioctl *mci; 841 842 debug_called(1); 843 844 /* check that this bus is valid */ 845 if (!MLY_BUS_IS_VALID(sc, bus)) 846 return; 847 848 /* get a command */ 849 if (mly_alloc_command(sc, &mc)) 850 return; 851 852 /* set up the data buffer */ 853 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 854 mly_release_command(mc); 855 return; 856 } 857 mc->mc_flags |= MLY_CMD_DATAIN; 858 mc->mc_complete = mly_complete_rescan; 859 860 /* 861 * Build the ioctl. 862 */ 863 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 864 mci->opcode = MDACMD_IOCTL; 865 mci->addr.phys.controller = 0; 866 mci->timeout.value = 30; 867 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 868 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 869 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 870 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 871 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 872 debug(1, "logical device %d", mci->addr.log.logdev); 873 } else { 874 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 875 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 876 mci->addr.phys.lun = 0; 877 mci->addr.phys.target = target; 878 mci->addr.phys.channel = bus; 879 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 880 } 881 882 /* 883 * Dispatch the command. If we successfully send the command, clear the rescan 884 * bit. 885 */ 886 if (mly_start(mc) != 0) { 887 mly_release_command(mc); 888 } else { 889 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 890 } 891} 892 893/******************************************************************************** 894 * Handle the completion of a rescan operation 895 */ 896static void 897mly_complete_rescan(struct mly_command *mc) 898{ 899 struct mly_softc *sc = mc->mc_sc; 900 struct mly_ioctl_getlogdevinfovalid *ldi; 901 struct mly_ioctl_getphysdevinfovalid *pdi; 902 struct mly_command_ioctl *mci; 903 struct mly_btl btl, *btlp; 904 int bus, target, rescan; 905 906 debug_called(1); 907 908 /* 909 * Recover the bus and target from the command. We need these even in 910 * the case where we don't have a useful response. 911 */ 912 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 913 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 914 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 915 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 916 } else { 917 bus = mci->addr.phys.channel; 918 target = mci->addr.phys.target; 919 } 920 /* XXX validate bus/target? */ 921 922 /* the default result is 'no device' */ 923 bzero(&btl, sizeof(btl)); 924 925 /* if the rescan completed OK, we have possibly-new BTL data */ 926 if (mc->mc_status == 0) { 927 if (mc->mc_length == sizeof(*ldi)) { 928 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 929 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 930 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 931 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 932 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 933 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 934 /* XXX what can we do about this? */ 935 } 936 btl.mb_flags = MLY_BTL_LOGICAL; 937 btl.mb_type = ldi->raid_level; 938 btl.mb_state = ldi->state; 939 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 940 mly_describe_code(mly_table_device_type, ldi->raid_level), 941 mly_describe_code(mly_table_device_state, ldi->state)); 942 } else if (mc->mc_length == sizeof(*pdi)) { 943 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 944 if ((pdi->channel != bus) || (pdi->target != target)) { 945 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 946 bus, target, pdi->channel, pdi->target); 947 /* XXX what can we do about this? */ 948 } 949 btl.mb_flags = MLY_BTL_PHYSICAL; 950 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 951 btl.mb_state = pdi->state; 952 btl.mb_speed = pdi->speed; 953 btl.mb_width = pdi->width; 954 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 955 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 956 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 957 mly_describe_code(mly_table_device_state, pdi->state)); 958 } else { 959 mly_printf(sc, "BTL rescan result invalid\n"); 960 } 961 } 962 963 free(mc->mc_data, M_DEVBUF); 964 mly_release_command(mc); 965 966 /* 967 * Decide whether we need to rescan the device. 968 */ 969 rescan = 0; 970 971 /* device type changes (usually between 'nothing' and 'something') */ 972 btlp = &sc->mly_btl[bus][target]; 973 if (btl.mb_flags != btlp->mb_flags) { 974 debug(1, "flags changed, rescanning"); 975 rescan = 1; 976 } 977 978 /* XXX other reasons? */ 979 980 /* 981 * Update BTL information. 982 */ 983 *btlp = btl; 984 985 /* 986 * Perform CAM rescan if required. 987 */ 988 if (rescan) 989 mly_cam_rescan_btl(sc, bus, target); 990} 991 992/******************************************************************************** 993 * Get the current health status and set the 'next event' counter to suit. 994 */ 995static int 996mly_get_eventstatus(struct mly_softc *sc) 997{ 998 struct mly_command_ioctl mci; 999 struct mly_health_status *mh; 1000 u_int8_t status; 1001 int error; 1002 1003 /* build the gethealthstatus ioctl and send it */ 1004 bzero(&mci, sizeof(mci)); 1005 mh = NULL; 1006 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 1007 1008 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 1009 return(error); 1010 if (status != 0) 1011 return(EIO); 1012 1013 /* get the event counter */ 1014 sc->mly_event_change = mh->change_counter; 1015 sc->mly_event_waiting = mh->next_event; 1016 sc->mly_event_counter = mh->next_event; 1017 1018 /* save the health status into the memory mailbox */ 1019 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1020 1021 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1022 1023 free(mh, M_DEVBUF); 1024 return(0); 1025} 1026 1027/******************************************************************************** 1028 * Enable the memory mailbox mode. 1029 */ 1030static int 1031mly_enable_mmbox(struct mly_softc *sc) 1032{ 1033 struct mly_command_ioctl mci; 1034 u_int8_t *sp, status; 1035 int error; 1036 1037 debug_called(1); 1038 1039 /* build the ioctl and send it */ 1040 bzero(&mci, sizeof(mci)); 1041 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1042 /* set buffer addresses */ 1043 mci.param.setmemorymailbox.command_mailbox_physaddr = 1044 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1045 mci.param.setmemorymailbox.status_mailbox_physaddr = 1046 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1047 mci.param.setmemorymailbox.health_buffer_physaddr = 1048 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1049 1050 /* set buffer sizes - abuse of data_size field is revolting */ 1051 sp = (u_int8_t *)&mci.data_size; 1052 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1053 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1054 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1055 1056 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1057 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1058 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1059 mci.param.setmemorymailbox.health_buffer_physaddr, 1060 mci.param.setmemorymailbox.health_buffer_size); 1061 1062 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1063 return(error); 1064 if (status != 0) 1065 return(EIO); 1066 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1067 debug(1, "memory mailbox active"); 1068 return(0); 1069} 1070 1071/******************************************************************************** 1072 * Flush all pending I/O from the controller. 1073 */ 1074static int 1075mly_flush(struct mly_softc *sc) 1076{ 1077 struct mly_command_ioctl mci; 1078 u_int8_t status; 1079 int error; 1080 1081 debug_called(1); 1082 1083 /* build the ioctl */ 1084 bzero(&mci, sizeof(mci)); 1085 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1086 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1087 1088 /* pass it off to the controller */ 1089 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1090 return(error); 1091 1092 return((status == 0) ? 0 : EIO); 1093} 1094 1095/******************************************************************************** 1096 * Perform an ioctl command. 1097 * 1098 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1099 * the command requires data transfer from the controller, and we will allocate 1100 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1101 * to the controller. 1102 * 1103 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1104 * 1105 * XXX we don't even try to handle the case where datasize > 4k. We should. 1106 */ 1107static int 1108mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1109 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1110{ 1111 struct mly_command *mc; 1112 struct mly_command_ioctl *mci; 1113 int error; 1114 1115 debug_called(1); 1116 MLY_ASSERT_LOCKED(sc); 1117 1118 mc = NULL; 1119 if (mly_alloc_command(sc, &mc)) { 1120 error = ENOMEM; 1121 goto out; 1122 } 1123 1124 /* copy the ioctl structure, but save some important fields and then fixup */ 1125 mci = &mc->mc_packet->ioctl; 1126 ioctl->sense_buffer_address = mci->sense_buffer_address; 1127 ioctl->maximum_sense_size = mci->maximum_sense_size; 1128 *mci = *ioctl; 1129 mci->opcode = MDACMD_IOCTL; 1130 mci->timeout.value = 30; 1131 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1132 1133 /* handle the data buffer */ 1134 if (data != NULL) { 1135 if (*data == NULL) { 1136 /* allocate data buffer */ 1137 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) { 1138 error = ENOMEM; 1139 goto out; 1140 } 1141 mc->mc_flags |= MLY_CMD_DATAIN; 1142 } else { 1143 mc->mc_data = *data; 1144 mc->mc_flags |= MLY_CMD_DATAOUT; 1145 } 1146 mc->mc_length = datasize; 1147 mc->mc_packet->generic.data_size = datasize; 1148 } 1149 1150 /* run the command */ 1151 if ((error = mly_immediate_command(mc))) 1152 goto out; 1153 1154 /* clean up and return any data */ 1155 *status = mc->mc_status; 1156 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1157 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1158 *sense_length = mc->mc_sense; 1159 goto out; 1160 } 1161 1162 /* should we return a data pointer? */ 1163 if ((data != NULL) && (*data == NULL)) 1164 *data = mc->mc_data; 1165 1166 /* command completed OK */ 1167 error = 0; 1168 1169out: 1170 if (mc != NULL) { 1171 /* do we need to free a data buffer we allocated? */ 1172 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1173 free(mc->mc_data, M_DEVBUF); 1174 mly_release_command(mc); 1175 } 1176 return(error); 1177} 1178 1179/******************************************************************************** 1180 * Check for event(s) outstanding in the controller. 1181 */ 1182static void 1183mly_check_event(struct mly_softc *sc) 1184{ 1185 1186 /* 1187 * The controller may have updated the health status information, 1188 * so check for it here. Note that the counters are all in host memory, 1189 * so this check is very cheap. Also note that we depend on checking on 1190 * completion 1191 */ 1192 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1193 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1194 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1195 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1196 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1197 1198 /* wake up anyone that might be interested in this */ 1199 wakeup(&sc->mly_event_change); 1200 } 1201 if (sc->mly_event_counter != sc->mly_event_waiting) 1202 mly_fetch_event(sc); 1203} 1204 1205/******************************************************************************** 1206 * Fetch one event from the controller. 1207 * 1208 * If we fail due to resource starvation, we'll be retried the next time a 1209 * command completes. 1210 */ 1211static void 1212mly_fetch_event(struct mly_softc *sc) 1213{ 1214 struct mly_command *mc; 1215 struct mly_command_ioctl *mci; 1216 int s; 1217 u_int32_t event; 1218 1219 debug_called(1); 1220 1221 /* get a command */ 1222 if (mly_alloc_command(sc, &mc)) 1223 return; 1224 1225 /* set up the data buffer */ 1226 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 1227 mly_release_command(mc); 1228 return; 1229 } 1230 mc->mc_length = sizeof(struct mly_event); 1231 mc->mc_flags |= MLY_CMD_DATAIN; 1232 mc->mc_complete = mly_complete_event; 1233 1234 /* 1235 * Get an event number to fetch. It's possible that we've raced with another 1236 * context for the last event, in which case there will be no more events. 1237 */ 1238 s = splcam(); 1239 if (sc->mly_event_counter == sc->mly_event_waiting) { 1240 mly_release_command(mc); 1241 splx(s); 1242 return; 1243 } 1244 event = sc->mly_event_counter++; 1245 splx(s); 1246 1247 /* 1248 * Build the ioctl. 1249 * 1250 * At this point we are committed to sending this request, as it 1251 * will be the only one constructed for this particular event number. 1252 */ 1253 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1254 mci->opcode = MDACMD_IOCTL; 1255 mci->data_size = sizeof(struct mly_event); 1256 mci->addr.phys.lun = (event >> 16) & 0xff; 1257 mci->addr.phys.target = (event >> 24) & 0xff; 1258 mci->addr.phys.channel = 0; 1259 mci->addr.phys.controller = 0; 1260 mci->timeout.value = 30; 1261 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1262 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1263 mci->param.getevent.sequence_number_low = event & 0xffff; 1264 1265 debug(1, "fetch event %u", event); 1266 1267 /* 1268 * Submit the command. 1269 * 1270 * Note that failure of mly_start() will result in this event never being 1271 * fetched. 1272 */ 1273 if (mly_start(mc) != 0) { 1274 mly_printf(sc, "couldn't fetch event %u\n", event); 1275 mly_release_command(mc); 1276 } 1277} 1278 1279/******************************************************************************** 1280 * Handle the completion of an event poll. 1281 */ 1282static void 1283mly_complete_event(struct mly_command *mc) 1284{ 1285 struct mly_softc *sc = mc->mc_sc; 1286 struct mly_event *me = (struct mly_event *)mc->mc_data; 1287 1288 debug_called(1); 1289 1290 /* 1291 * If the event was successfully fetched, process it. 1292 */ 1293 if (mc->mc_status == SCSI_STATUS_OK) { 1294 mly_process_event(sc, me); 1295 free(me, M_DEVBUF); 1296 } 1297 mly_release_command(mc); 1298 1299 /* 1300 * Check for another event. 1301 */ 1302 mly_check_event(sc); 1303} 1304 1305/******************************************************************************** 1306 * Process a controller event. 1307 */ 1308static void 1309mly_process_event(struct mly_softc *sc, struct mly_event *me) 1310{ 1311 struct scsi_sense_data_fixed *ssd; 1312 char *fp, *tp; 1313 int bus, target, event, class, action; 1314 1315 ssd = (struct scsi_sense_data_fixed *)&me->sense[0]; 1316 1317 /* 1318 * Errors can be reported using vendor-unique sense data. In this case, the 1319 * event code will be 0x1c (Request sense data present), the sense key will 1320 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1321 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1322 * and low seven bits of the ASC (low seven bits of the high byte). 1323 */ 1324 if ((me->code == 0x1c) && 1325 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1326 (ssd->add_sense_code & 0x80)) { 1327 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1328 } else { 1329 event = me->code; 1330 } 1331 1332 /* look up event, get codes */ 1333 fp = mly_describe_code(mly_table_event, event); 1334 1335 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1336 1337 /* quiet event? */ 1338 class = fp[0]; 1339 if (isupper(class) && bootverbose) 1340 class = tolower(class); 1341 1342 /* get action code, text string */ 1343 action = fp[1]; 1344 tp = &fp[2]; 1345 1346 /* 1347 * Print some information about the event. 1348 * 1349 * This code uses a table derived from the corresponding portion of the Linux 1350 * driver, and thus the parser is very similar. 1351 */ 1352 switch(class) { 1353 case 'p': /* error on physical device */ 1354 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1355 if (action == 'r') 1356 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1357 break; 1358 case 'l': /* error on logical unit */ 1359 case 'm': /* message about logical unit */ 1360 bus = MLY_LOGDEV_BUS(sc, me->lun); 1361 target = MLY_LOGDEV_TARGET(sc, me->lun); 1362 mly_name_device(sc, bus, target); 1363 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1364 if (action == 'r') 1365 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1366 break; 1367 case 's': /* report of sense data */ 1368 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1369 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1370 (ssd->add_sense_code == 0x04) && 1371 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1372 break; /* ignore NO_SENSE or NOT_READY in one case */ 1373 1374 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1375 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1376 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1377 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1378 if (action == 'r') 1379 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1380 break; 1381 case 'e': 1382 mly_printf(sc, tp, me->target, me->lun); 1383 printf("\n"); 1384 break; 1385 case 'c': 1386 mly_printf(sc, "controller %s\n", tp); 1387 break; 1388 case '?': 1389 mly_printf(sc, "%s - %d\n", tp, me->code); 1390 break; 1391 default: /* probably a 'noisy' event being ignored */ 1392 break; 1393 } 1394} 1395 1396/******************************************************************************** 1397 * Perform periodic activities. 1398 */ 1399static void 1400mly_periodic(void *data) 1401{ 1402 struct mly_softc *sc = (struct mly_softc *)data; 1403 int bus, target; 1404 1405 debug_called(2); 1406 MLY_ASSERT_LOCKED(sc); 1407 1408 /* 1409 * Scan devices. 1410 */ 1411 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1412 if (MLY_BUS_IS_VALID(sc, bus)) { 1413 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1414 1415 /* ignore the controller in this scan */ 1416 if (target == sc->mly_controllerparam->initiator_id) 1417 continue; 1418 1419 /* perform device rescan? */ 1420 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1421 mly_rescan_btl(sc, bus, target); 1422 } 1423 } 1424 } 1425 1426 /* check for controller events */ 1427 mly_check_event(sc); 1428 1429 /* reschedule ourselves */ 1430 callout_schedule(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz); 1431} 1432 1433/******************************************************************************** 1434 ******************************************************************************** 1435 Command Processing 1436 ******************************************************************************** 1437 ********************************************************************************/ 1438 1439/******************************************************************************** 1440 * Run a command and wait for it to complete. 1441 * 1442 */ 1443static int 1444mly_immediate_command(struct mly_command *mc) 1445{ 1446 struct mly_softc *sc = mc->mc_sc; 1447 int error; 1448 1449 debug_called(1); 1450 1451 MLY_ASSERT_LOCKED(sc); 1452 if ((error = mly_start(mc))) { 1453 return(error); 1454 } 1455 1456 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1457 /* sleep on the command */ 1458 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1459 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlywait", 0); 1460 } 1461 } else { 1462 /* spin and collect status while we do */ 1463 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1464 mly_done(mc->mc_sc); 1465 } 1466 } 1467 return(0); 1468} 1469 1470/******************************************************************************** 1471 * Deliver a command to the controller. 1472 * 1473 * XXX it would be good to just queue commands that we can't submit immediately 1474 * and send them later, but we probably want a wrapper for that so that 1475 * we don't hang on a failed submission for an immediate command. 1476 */ 1477static int 1478mly_start(struct mly_command *mc) 1479{ 1480 struct mly_softc *sc = mc->mc_sc; 1481 union mly_command_packet *pkt; 1482 1483 debug_called(2); 1484 MLY_ASSERT_LOCKED(sc); 1485 1486 /* 1487 * Set the command up for delivery to the controller. 1488 */ 1489 mly_map_command(mc); 1490 mc->mc_packet->generic.command_id = mc->mc_slot; 1491 1492#ifdef MLY_DEBUG 1493 mc->mc_timestamp = time_second; 1494#endif 1495 1496 /* 1497 * Do we have to use the hardware mailbox? 1498 */ 1499 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1500 /* 1501 * Check to see if the controller is ready for us. 1502 */ 1503 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1504 return(EBUSY); 1505 } 1506 mc->mc_flags |= MLY_CMD_BUSY; 1507 1508 /* 1509 * It's ready, send the command. 1510 */ 1511 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1512 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1513 1514 } else { /* use memory-mailbox mode */ 1515 1516 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1517 1518 /* check to see if the next index is free yet */ 1519 if (pkt->mmbox.flag != 0) { 1520 return(EBUSY); 1521 } 1522 mc->mc_flags |= MLY_CMD_BUSY; 1523 1524 /* copy in new command */ 1525 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1526 /* barrier to ensure completion of previous write before we write the flag */ 1527 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1528 /* copy flag last */ 1529 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1530 /* barrier to ensure completion of previous write before we notify the controller */ 1531 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1532 1533 /* signal controller, update index */ 1534 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1535 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1536 } 1537 1538 mly_enqueue_busy(mc); 1539 return(0); 1540} 1541 1542/******************************************************************************** 1543 * Pick up command status from the controller, schedule a completion event 1544 */ 1545static void 1546mly_done(struct mly_softc *sc) 1547{ 1548 struct mly_command *mc; 1549 union mly_status_packet *sp; 1550 u_int16_t slot; 1551 int worked; 1552 1553 MLY_ASSERT_LOCKED(sc); 1554 worked = 0; 1555 1556 /* pick up hardware-mailbox commands */ 1557 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1558 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1559 if (slot < MLY_SLOT_MAX) { 1560 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1561 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1562 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1563 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1564 mly_remove_busy(mc); 1565 mc->mc_flags &= ~MLY_CMD_BUSY; 1566 mly_enqueue_complete(mc); 1567 worked = 1; 1568 } else { 1569 /* slot 0xffff may mean "extremely bogus command" */ 1570 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1571 } 1572 /* unconditionally acknowledge status */ 1573 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1574 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1575 } 1576 1577 /* pick up memory-mailbox commands */ 1578 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1579 for (;;) { 1580 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1581 1582 /* check for more status */ 1583 if (sp->mmbox.flag == 0) 1584 break; 1585 1586 /* get slot number */ 1587 slot = sp->status.command_id; 1588 if (slot < MLY_SLOT_MAX) { 1589 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1590 mc->mc_status = sp->status.status; 1591 mc->mc_sense = sp->status.sense_length; 1592 mc->mc_resid = sp->status.residue; 1593 mly_remove_busy(mc); 1594 mc->mc_flags &= ~MLY_CMD_BUSY; 1595 mly_enqueue_complete(mc); 1596 worked = 1; 1597 } else { 1598 /* slot 0xffff may mean "extremely bogus command" */ 1599 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1600 slot, sc->mly_mmbox_status_index); 1601 } 1602 1603 /* clear and move to next index */ 1604 sp->mmbox.flag = 0; 1605 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1606 } 1607 /* acknowledge that we have collected status value(s) */ 1608 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1609 } 1610 1611 if (worked) { 1612 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1613 taskqueue_enqueue(taskqueue_thread, &sc->mly_task_complete); 1614 else 1615 mly_complete(sc); 1616 } 1617} 1618 1619/******************************************************************************** 1620 * Process completed commands 1621 */ 1622static void 1623mly_complete_handler(void *context, int pending) 1624{ 1625 struct mly_softc *sc = (struct mly_softc *)context; 1626 1627 MLY_LOCK(sc); 1628 mly_complete(sc); 1629 MLY_UNLOCK(sc); 1630} 1631 1632static void 1633mly_complete(struct mly_softc *sc) 1634{ 1635 struct mly_command *mc; 1636 void (* mc_complete)(struct mly_command *mc); 1637 1638 debug_called(2); 1639 1640 /* 1641 * Spin pulling commands off the completed queue and processing them. 1642 */ 1643 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1644 1645 /* 1646 * Free controller resources, mark command complete. 1647 * 1648 * Note that as soon as we mark the command complete, it may be freed 1649 * out from under us, so we need to save the mc_complete field in 1650 * order to later avoid dereferencing mc. (We would not expect to 1651 * have a polling/sleeping consumer with mc_complete != NULL). 1652 */ 1653 mly_unmap_command(mc); 1654 mc_complete = mc->mc_complete; 1655 mc->mc_flags |= MLY_CMD_COMPLETE; 1656 1657 /* 1658 * Call completion handler or wake up sleeping consumer. 1659 */ 1660 if (mc_complete != NULL) { 1661 mc_complete(mc); 1662 } else { 1663 wakeup(mc); 1664 } 1665 } 1666 1667 /* 1668 * XXX if we are deferring commands due to controller-busy status, we should 1669 * retry submitting them here. 1670 */ 1671} 1672 1673/******************************************************************************** 1674 ******************************************************************************** 1675 Command Buffer Management 1676 ******************************************************************************** 1677 ********************************************************************************/ 1678 1679/******************************************************************************** 1680 * Allocate a command. 1681 */ 1682static int 1683mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1684{ 1685 struct mly_command *mc; 1686 1687 debug_called(3); 1688 1689 if ((mc = mly_dequeue_free(sc)) == NULL) 1690 return(ENOMEM); 1691 1692 *mcp = mc; 1693 return(0); 1694} 1695 1696/******************************************************************************** 1697 * Release a command back to the freelist. 1698 */ 1699static void 1700mly_release_command(struct mly_command *mc) 1701{ 1702 debug_called(3); 1703 1704 /* 1705 * Fill in parts of the command that may cause confusion if 1706 * a consumer doesn't when we are later allocated. 1707 */ 1708 mc->mc_data = NULL; 1709 mc->mc_flags = 0; 1710 mc->mc_complete = NULL; 1711 mc->mc_private = NULL; 1712 1713 /* 1714 * By default, we set up to overwrite the command packet with 1715 * sense information. 1716 */ 1717 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1718 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1719 1720 mly_enqueue_free(mc); 1721} 1722 1723/******************************************************************************** 1724 * Map helper for command allocation. 1725 */ 1726static void 1727mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1728{ 1729 struct mly_softc *sc = (struct mly_softc *)arg; 1730 1731 debug_called(1); 1732 1733 sc->mly_packetphys = segs[0].ds_addr; 1734} 1735 1736/******************************************************************************** 1737 * Allocate and initialise command and packet structures. 1738 * 1739 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1740 * allocation to that number. If we don't yet know how many commands the 1741 * controller supports, allocate a very small set (suitable for initialisation 1742 * purposes only). 1743 */ 1744static int 1745mly_alloc_commands(struct mly_softc *sc) 1746{ 1747 struct mly_command *mc; 1748 int i, ncmd; 1749 1750 if (sc->mly_controllerinfo == NULL) { 1751 ncmd = 4; 1752 } else { 1753 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1754 } 1755 1756 /* 1757 * Allocate enough space for all the command packets in one chunk and 1758 * map them permanently into controller-visible space. 1759 */ 1760 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1761 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1762 return(ENOMEM); 1763 } 1764 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1765 ncmd * sizeof(union mly_command_packet), 1766 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1767 return (ENOMEM); 1768 1769 for (i = 0; i < ncmd; i++) { 1770 mc = &sc->mly_command[i]; 1771 bzero(mc, sizeof(*mc)); 1772 mc->mc_sc = sc; 1773 mc->mc_slot = MLY_SLOT_START + i; 1774 mc->mc_packet = sc->mly_packet + i; 1775 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1776 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1777 mly_release_command(mc); 1778 } 1779 return(0); 1780} 1781 1782/******************************************************************************** 1783 * Free all the storage held by commands. 1784 * 1785 * Must be called with all commands on the free list. 1786 */ 1787static void 1788mly_release_commands(struct mly_softc *sc) 1789{ 1790 struct mly_command *mc; 1791 1792 /* throw away command buffer DMA maps */ 1793 while (mly_alloc_command(sc, &mc) == 0) 1794 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1795 1796 /* release the packet storage */ 1797 if (sc->mly_packet != NULL) { 1798 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1799 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1800 sc->mly_packet = NULL; 1801 } 1802} 1803 1804 1805/******************************************************************************** 1806 * Command-mapping helper function - populate this command's s/g table 1807 * with the s/g entries for its data. 1808 */ 1809static void 1810mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1811{ 1812 struct mly_command *mc = (struct mly_command *)arg; 1813 struct mly_softc *sc = mc->mc_sc; 1814 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1815 struct mly_sg_entry *sg; 1816 int i, tabofs; 1817 1818 debug_called(2); 1819 1820 /* can we use the transfer structure directly? */ 1821 if (nseg <= 2) { 1822 sg = &gen->transfer.direct.sg[0]; 1823 gen->command_control.extended_sg_table = 0; 1824 } else { 1825 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1826 sg = sc->mly_sg_table + tabofs; 1827 gen->transfer.indirect.entries[0] = nseg; 1828 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1829 gen->command_control.extended_sg_table = 1; 1830 } 1831 1832 /* copy the s/g table */ 1833 for (i = 0; i < nseg; i++) { 1834 sg[i].physaddr = segs[i].ds_addr; 1835 sg[i].length = segs[i].ds_len; 1836 } 1837 1838} 1839 1840#if 0 1841/******************************************************************************** 1842 * Command-mapping helper function - save the cdb's physical address. 1843 * 1844 * We don't support 'large' SCSI commands at this time, so this is unused. 1845 */ 1846static void 1847mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1848{ 1849 struct mly_command *mc = (struct mly_command *)arg; 1850 1851 debug_called(2); 1852 1853 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1854 if ((segs[0].ds_addr % PAGE_SIZE) > 1855 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1856 panic("cdb crosses page boundary"); 1857 1858 /* fix up fields in the command packet */ 1859 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1860} 1861#endif 1862 1863/******************************************************************************** 1864 * Map a command into controller-visible space 1865 */ 1866static void 1867mly_map_command(struct mly_command *mc) 1868{ 1869 struct mly_softc *sc = mc->mc_sc; 1870 1871 debug_called(2); 1872 1873 /* don't map more than once */ 1874 if (mc->mc_flags & MLY_CMD_MAPPED) 1875 return; 1876 1877 /* does the command have a data buffer? */ 1878 if (mc->mc_data != NULL) { 1879 if (mc->mc_flags & MLY_CMD_CCB) 1880 bus_dmamap_load_ccb(sc->mly_buffer_dmat, mc->mc_datamap, 1881 mc->mc_data, mly_map_command_sg, mc, 0); 1882 else 1883 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, 1884 mc->mc_data, mc->mc_length, 1885 mly_map_command_sg, mc, 0); 1886 if (mc->mc_flags & MLY_CMD_DATAIN) 1887 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1888 if (mc->mc_flags & MLY_CMD_DATAOUT) 1889 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1890 } 1891 mc->mc_flags |= MLY_CMD_MAPPED; 1892} 1893 1894/******************************************************************************** 1895 * Unmap a command from controller-visible space 1896 */ 1897static void 1898mly_unmap_command(struct mly_command *mc) 1899{ 1900 struct mly_softc *sc = mc->mc_sc; 1901 1902 debug_called(2); 1903 1904 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1905 return; 1906 1907 /* does the command have a data buffer? */ 1908 if (mc->mc_data != NULL) { 1909 if (mc->mc_flags & MLY_CMD_DATAIN) 1910 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1911 if (mc->mc_flags & MLY_CMD_DATAOUT) 1912 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1913 1914 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1915 } 1916 mc->mc_flags &= ~MLY_CMD_MAPPED; 1917} 1918 1919 1920/******************************************************************************** 1921 ******************************************************************************** 1922 CAM interface 1923 ******************************************************************************** 1924 ********************************************************************************/ 1925 1926/******************************************************************************** 1927 * Attach the physical and virtual SCSI busses to CAM. 1928 * 1929 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1930 * than the highest physical bus. Physical busses are only registered if 1931 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1932 * 1933 * When we refer to a "bus", we are referring to the bus number registered with 1934 * the SIM, whereas a "channel" is a channel number given to the adapter. In order 1935 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1936 * interchangeably. 1937 */ 1938static int 1939mly_cam_attach(struct mly_softc *sc) 1940{ 1941 struct cam_devq *devq; 1942 int chn, i; 1943 1944 debug_called(1); 1945 1946 /* 1947 * Allocate a devq for all our channels combined. 1948 */ 1949 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1950 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1951 return(ENOMEM); 1952 } 1953 1954 /* 1955 * If physical channel registration has been requested, register these first. 1956 * Note that we enable tagged command queueing for physical channels. 1957 */ 1958 if (testenv("hw.mly.register_physical_channels")) { 1959 chn = 0; 1960 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1961 1962 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1963 device_get_unit(sc->mly_dev), 1964 &sc->mly_lock, 1965 sc->mly_controllerinfo->maximum_parallel_commands, 1966 1, devq)) == NULL) { 1967 return(ENOMEM); 1968 } 1969 MLY_LOCK(sc); 1970 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1971 MLY_UNLOCK(sc); 1972 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1973 return(ENXIO); 1974 } 1975 MLY_UNLOCK(sc); 1976 debug(1, "registered physical channel %d", chn); 1977 } 1978 } 1979 1980 /* 1981 * Register our virtual channels, with bus numbers matching channel numbers. 1982 */ 1983 chn = sc->mly_controllerinfo->physical_channels_present; 1984 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1985 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1986 device_get_unit(sc->mly_dev), 1987 &sc->mly_lock, 1988 sc->mly_controllerinfo->maximum_parallel_commands, 1989 0, devq)) == NULL) { 1990 return(ENOMEM); 1991 } 1992 MLY_LOCK(sc); 1993 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1994 MLY_UNLOCK(sc); 1995 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1996 return(ENXIO); 1997 } 1998 MLY_UNLOCK(sc); 1999 debug(1, "registered virtual channel %d", chn); 2000 } 2001 2002 /* 2003 * This is the total number of channels that (might have been) registered with 2004 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 2005 */ 2006 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 2007 sc->mly_controllerinfo->virtual_channels_present; 2008 2009 return(0); 2010} 2011 2012/******************************************************************************** 2013 * Detach from CAM 2014 */ 2015static void 2016mly_cam_detach(struct mly_softc *sc) 2017{ 2018 int i; 2019 2020 debug_called(1); 2021 2022 MLY_LOCK(sc); 2023 for (i = 0; i < sc->mly_cam_channels; i++) { 2024 if (sc->mly_cam_sim[i] != NULL) { 2025 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 2026 cam_sim_free(sc->mly_cam_sim[i], 0); 2027 } 2028 } 2029 MLY_UNLOCK(sc); 2030 if (sc->mly_cam_devq != NULL) 2031 cam_simq_free(sc->mly_cam_devq); 2032} 2033 2034/************************************************************************ 2035 * Rescan a device. 2036 */ 2037static void 2038mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2039{ 2040 union ccb *ccb; 2041 2042 debug_called(1); 2043 2044 if ((ccb = xpt_alloc_ccb()) == NULL) { 2045 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2046 return; 2047 } 2048 if (xpt_create_path(&ccb->ccb_h.path, NULL, 2049 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2050 mly_printf(sc, "rescan failed (can't create path)\n"); 2051 xpt_free_ccb(ccb); 2052 return; 2053 } 2054 debug(1, "rescan target %d:%d", bus, target); 2055 xpt_rescan(ccb); 2056} 2057 2058/******************************************************************************** 2059 * Handle an action requested by CAM 2060 */ 2061static void 2062mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2063{ 2064 struct mly_softc *sc = cam_sim_softc(sim); 2065 2066 debug_called(2); 2067 MLY_ASSERT_LOCKED(sc); 2068 2069 switch (ccb->ccb_h.func_code) { 2070 2071 /* perform SCSI I/O */ 2072 case XPT_SCSI_IO: 2073 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2074 return; 2075 break; 2076 2077 /* perform geometry calculations */ 2078 case XPT_CALC_GEOMETRY: 2079 { 2080 struct ccb_calc_geometry *ccg = &ccb->ccg; 2081 u_int32_t secs_per_cylinder; 2082 2083 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2084 2085 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2086 ccg->heads = 255; 2087 ccg->secs_per_track = 63; 2088 } else { /* MLY_BIOSGEOM_2G */ 2089 ccg->heads = 128; 2090 ccg->secs_per_track = 32; 2091 } 2092 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2093 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2094 ccb->ccb_h.status = CAM_REQ_CMP; 2095 break; 2096 } 2097 2098 /* handle path attribute inquiry */ 2099 case XPT_PATH_INQ: 2100 { 2101 struct ccb_pathinq *cpi = &ccb->cpi; 2102 2103 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2104 2105 cpi->version_num = 1; 2106 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2107 cpi->target_sprt = 0; 2108 cpi->hba_misc = 0; 2109 cpi->max_target = MLY_MAX_TARGETS - 1; 2110 cpi->max_lun = MLY_MAX_LUNS - 1; 2111 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2112 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2113 strlcpy(cpi->hba_vid, "Mylex", HBA_IDLEN); 2114 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2115 cpi->unit_number = cam_sim_unit(sim); 2116 cpi->bus_id = cam_sim_bus(sim); 2117 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2118 cpi->transport = XPORT_SPI; 2119 cpi->transport_version = 2; 2120 cpi->protocol = PROTO_SCSI; 2121 cpi->protocol_version = SCSI_REV_2; 2122 ccb->ccb_h.status = CAM_REQ_CMP; 2123 break; 2124 } 2125 2126 case XPT_GET_TRAN_SETTINGS: 2127 { 2128 struct ccb_trans_settings *cts = &ccb->cts; 2129 int bus, target; 2130 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2131 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2132 2133 cts->protocol = PROTO_SCSI; 2134 cts->protocol_version = SCSI_REV_2; 2135 cts->transport = XPORT_SPI; 2136 cts->transport_version = 2; 2137 2138 scsi->flags = 0; 2139 scsi->valid = 0; 2140 spi->flags = 0; 2141 spi->valid = 0; 2142 2143 bus = cam_sim_bus(sim); 2144 target = cts->ccb_h.target_id; 2145 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2146 /* logical device? */ 2147 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2148 /* nothing special for these */ 2149 /* physical device? */ 2150 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2151 /* allow CAM to try tagged transactions */ 2152 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2153 scsi->valid |= CTS_SCSI_VALID_TQ; 2154 2155 /* convert speed (MHz) to usec */ 2156 if (sc->mly_btl[bus][target].mb_speed == 0) { 2157 spi->sync_period = 1000000 / 5; 2158 } else { 2159 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2160 } 2161 2162 /* convert bus width to CAM internal encoding */ 2163 switch (sc->mly_btl[bus][target].mb_width) { 2164 case 32: 2165 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2166 break; 2167 case 16: 2168 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2169 break; 2170 case 8: 2171 default: 2172 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2173 break; 2174 } 2175 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2176 2177 /* not a device, bail out */ 2178 } else { 2179 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2180 break; 2181 } 2182 2183 /* disconnect always OK */ 2184 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2185 spi->valid |= CTS_SPI_VALID_DISC; 2186 2187 cts->ccb_h.status = CAM_REQ_CMP; 2188 break; 2189 } 2190 2191 default: /* we can't do this */ 2192 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2193 ccb->ccb_h.status = CAM_REQ_INVALID; 2194 break; 2195 } 2196 2197 xpt_done(ccb); 2198} 2199 2200/******************************************************************************** 2201 * Handle an I/O operation requested by CAM 2202 */ 2203static int 2204mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2205{ 2206 struct mly_softc *sc = cam_sim_softc(sim); 2207 struct mly_command *mc; 2208 struct mly_command_scsi_small *ss; 2209 int bus, target; 2210 int error; 2211 2212 bus = cam_sim_bus(sim); 2213 target = csio->ccb_h.target_id; 2214 2215 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2216 2217 /* validate bus number */ 2218 if (!MLY_BUS_IS_VALID(sc, bus)) { 2219 debug(0, " invalid bus %d", bus); 2220 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2221 } 2222 2223 /* check for I/O attempt to a protected device */ 2224 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2225 debug(2, " device protected"); 2226 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2227 } 2228 2229 /* check for I/O attempt to nonexistent device */ 2230 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2231 debug(2, " device %d:%d does not exist", bus, target); 2232 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2233 } 2234 2235 /* XXX increase if/when we support large SCSI commands */ 2236 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2237 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2238 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2239 } 2240 2241 /* check that the CDB pointer is not to a physical address */ 2242 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2243 debug(0, " CDB pointer is to physical address"); 2244 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2245 } 2246 2247 /* abandon aborted ccbs or those that have failed validation */ 2248 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2249 debug(2, "abandoning CCB due to abort/validation failure"); 2250 return(EINVAL); 2251 } 2252 2253 /* 2254 * Get a command, or push the ccb back to CAM and freeze the queue. 2255 */ 2256 if ((error = mly_alloc_command(sc, &mc))) { 2257 xpt_freeze_simq(sim, 1); 2258 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2259 sc->mly_qfrzn_cnt++; 2260 return(error); 2261 } 2262 2263 /* build the command */ 2264 mc->mc_data = csio; 2265 mc->mc_length = csio->dxfer_len; 2266 mc->mc_complete = mly_cam_complete; 2267 mc->mc_private = csio; 2268 mc->mc_flags |= MLY_CMD_CCB; 2269 /* XXX This code doesn't set the data direction in mc_flags. */ 2270 2271 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2272 csio->ccb_h.sim_priv.entries[0].field = bus; 2273 2274 /* build the packet for the controller */ 2275 ss = &mc->mc_packet->scsi_small; 2276 ss->opcode = MDACMD_SCSI; 2277 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2278 ss->command_control.disable_disconnect = 1; 2279 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2280 ss->command_control.data_direction = MLY_CCB_WRITE; 2281 ss->data_size = csio->dxfer_len; 2282 ss->addr.phys.lun = csio->ccb_h.target_lun; 2283 ss->addr.phys.target = csio->ccb_h.target_id; 2284 ss->addr.phys.channel = bus; 2285 if (csio->ccb_h.timeout < (60 * 1000)) { 2286 ss->timeout.value = csio->ccb_h.timeout / 1000; 2287 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2288 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2289 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2290 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2291 } else { 2292 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2293 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2294 } 2295 ss->maximum_sense_size = csio->sense_len; 2296 ss->cdb_length = csio->cdb_len; 2297 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2298 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2299 } else { 2300 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2301 } 2302 2303 /* give the command to the controller */ 2304 if ((error = mly_start(mc))) { 2305 xpt_freeze_simq(sim, 1); 2306 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2307 sc->mly_qfrzn_cnt++; 2308 return(error); 2309 } 2310 2311 return(0); 2312} 2313 2314/******************************************************************************** 2315 * Check for possibly-completed commands. 2316 */ 2317static void 2318mly_cam_poll(struct cam_sim *sim) 2319{ 2320 struct mly_softc *sc = cam_sim_softc(sim); 2321 2322 debug_called(2); 2323 2324 mly_done(sc); 2325} 2326 2327/******************************************************************************** 2328 * Handle completion of a command - pass results back through the CCB 2329 */ 2330static void 2331mly_cam_complete(struct mly_command *mc) 2332{ 2333 struct mly_softc *sc = mc->mc_sc; 2334 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2335 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2336 struct mly_btl *btl; 2337 u_int8_t cmd; 2338 int bus, target; 2339 2340 debug_called(2); 2341 2342 csio->scsi_status = mc->mc_status; 2343 switch(mc->mc_status) { 2344 case SCSI_STATUS_OK: 2345 /* 2346 * In order to report logical device type and status, we overwrite 2347 * the result of the INQUIRY command to logical devices. 2348 */ 2349 bus = csio->ccb_h.sim_priv.entries[0].field; 2350 target = csio->ccb_h.target_id; 2351 /* XXX validate bus/target? */ 2352 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2353 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2354 cmd = *csio->cdb_io.cdb_ptr; 2355 } else { 2356 cmd = csio->cdb_io.cdb_bytes[0]; 2357 } 2358 if (cmd == INQUIRY) { 2359 btl = &sc->mly_btl[bus][target]; 2360 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2361 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2362 padstr(inq->revision, "", 4); 2363 } 2364 } 2365 2366 debug(2, "SCSI_STATUS_OK"); 2367 csio->ccb_h.status = CAM_REQ_CMP; 2368 break; 2369 2370 case SCSI_STATUS_CHECK_COND: 2371 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2372 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2373 bzero(&csio->sense_data, SSD_FULL_SIZE); 2374 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2375 csio->sense_len = mc->mc_sense; 2376 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2377 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2378 break; 2379 2380 case SCSI_STATUS_BUSY: 2381 debug(1, "SCSI_STATUS_BUSY"); 2382 csio->ccb_h.status = CAM_SCSI_BUSY; 2383 break; 2384 2385 default: 2386 debug(1, "unknown status 0x%x", csio->scsi_status); 2387 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2388 break; 2389 } 2390 2391 if (sc->mly_qfrzn_cnt) { 2392 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2393 sc->mly_qfrzn_cnt--; 2394 } 2395 2396 xpt_done((union ccb *)csio); 2397 mly_release_command(mc); 2398} 2399 2400/******************************************************************************** 2401 * Find a peripheral attahed at (bus),(target) 2402 */ 2403static struct cam_periph * 2404mly_find_periph(struct mly_softc *sc, int bus, int target) 2405{ 2406 struct cam_periph *periph; 2407 struct cam_path *path; 2408 int status; 2409 2410 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2411 if (status == CAM_REQ_CMP) { 2412 periph = cam_periph_find(path, NULL); 2413 xpt_free_path(path); 2414 } else { 2415 periph = NULL; 2416 } 2417 return(periph); 2418} 2419 2420/******************************************************************************** 2421 * Name the device at (bus)(target) 2422 */ 2423static int 2424mly_name_device(struct mly_softc *sc, int bus, int target) 2425{ 2426 struct cam_periph *periph; 2427 2428 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2429 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2430 return(0); 2431 } 2432 sc->mly_btl[bus][target].mb_name[0] = 0; 2433 return(ENOENT); 2434} 2435 2436/******************************************************************************** 2437 ******************************************************************************** 2438 Hardware Control 2439 ******************************************************************************** 2440 ********************************************************************************/ 2441 2442/******************************************************************************** 2443 * Handshake with the firmware while the card is being initialised. 2444 */ 2445static int 2446mly_fwhandshake(struct mly_softc *sc) 2447{ 2448 u_int8_t error, param0, param1; 2449 int spinup = 0; 2450 2451 debug_called(1); 2452 2453 /* set HM_STSACK and let the firmware initialise */ 2454 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2455 DELAY(1000); /* too short? */ 2456 2457 /* if HM_STSACK is still true, the controller is initialising */ 2458 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2459 return(0); 2460 mly_printf(sc, "controller initialisation started\n"); 2461 2462 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2463 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2464 /* check for a message */ 2465 if (MLY_ERROR_VALID(sc)) { 2466 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2467 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2468 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2469 2470 switch(error) { 2471 case MLY_MSG_SPINUP: 2472 if (!spinup) { 2473 mly_printf(sc, "drive spinup in progress\n"); 2474 spinup = 1; /* only print this once (should print drive being spun?) */ 2475 } 2476 break; 2477 case MLY_MSG_RACE_RECOVERY_FAIL: 2478 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2479 break; 2480 case MLY_MSG_RACE_IN_PROGRESS: 2481 mly_printf(sc, "mirror race recovery in progress\n"); 2482 break; 2483 case MLY_MSG_RACE_ON_CRITICAL: 2484 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2485 break; 2486 case MLY_MSG_PARITY_ERROR: 2487 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2488 return(ENXIO); 2489 default: 2490 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2491 } 2492 } 2493 } 2494 return(0); 2495} 2496 2497/******************************************************************************** 2498 ******************************************************************************** 2499 Debugging and Diagnostics 2500 ******************************************************************************** 2501 ********************************************************************************/ 2502 2503/******************************************************************************** 2504 * Print some information about the controller. 2505 */ 2506static void 2507mly_describe_controller(struct mly_softc *sc) 2508{ 2509 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2510 2511 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2512 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2513 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2514 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2515 mi->memory_size); 2516 2517 if (bootverbose) { 2518 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2519 mly_describe_code(mly_table_oemname, mi->oem_information), 2520 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2521 mi->interface_speed, mi->interface_width, mi->interface_name); 2522 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2523 mi->memory_size, mi->memory_speed, mi->memory_width, 2524 mly_describe_code(mly_table_memorytype, mi->memory_type), 2525 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2526 mi->cache_size); 2527 mly_printf(sc, "CPU: %s @ %dMHz\n", 2528 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2529 if (mi->l2cache_size != 0) 2530 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2531 if (mi->exmemory_size != 0) 2532 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2533 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2534 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2535 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2536 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2537 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2538 mi->maximum_block_count, mi->maximum_sg_entries); 2539 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2540 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2541 mly_printf(sc, "physical devices present %d\n", 2542 mi->physical_devices_present); 2543 mly_printf(sc, "physical disks present/offline %d/%d\n", 2544 mi->physical_disks_present, mi->physical_disks_offline); 2545 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2546 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2547 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2548 mi->virtual_channels_possible); 2549 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2550 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2551 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2552 } 2553} 2554 2555#ifdef MLY_DEBUG 2556/******************************************************************************** 2557 * Print some controller state 2558 */ 2559static void 2560mly_printstate(struct mly_softc *sc) 2561{ 2562 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2563 MLY_GET_REG(sc, sc->mly_idbr), 2564 MLY_GET_REG(sc, sc->mly_odbr), 2565 MLY_GET_REG(sc, sc->mly_error_status), 2566 sc->mly_idbr, 2567 sc->mly_odbr, 2568 sc->mly_error_status); 2569 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2570 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2571 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2572 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2573 MLY_GET_REG(sc, sc->mly_command_mailbox), 2574 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2575 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2576 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2577 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2578 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2579 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2580 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2581 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2582 MLY_GET_REG(sc, sc->mly_status_mailbox), 2583 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2584 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2585 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2586 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2587 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2588 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2589 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2590 mly_printf(sc, " %04x %08x\n", 2591 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2592 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2593} 2594 2595struct mly_softc *mly_softc0 = NULL; 2596void 2597mly_printstate0(void) 2598{ 2599 if (mly_softc0 != NULL) 2600 mly_printstate(mly_softc0); 2601} 2602 2603/******************************************************************************** 2604 * Print a command 2605 */ 2606static void 2607mly_print_command(struct mly_command *mc) 2608{ 2609 struct mly_softc *sc = mc->mc_sc; 2610 2611 mly_printf(sc, "COMMAND @ %p\n", mc); 2612 mly_printf(sc, " slot %d\n", mc->mc_slot); 2613 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2614 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2615 mly_printf(sc, " resid %d\n", mc->mc_resid); 2616 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2617 if (mc->mc_packet != NULL) 2618 mly_print_packet(mc); 2619 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2620 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2621 mly_printf(sc, " complete %p\n", mc->mc_complete); 2622 mly_printf(sc, " private %p\n", mc->mc_private); 2623} 2624 2625/******************************************************************************** 2626 * Print a command packet 2627 */ 2628static void 2629mly_print_packet(struct mly_command *mc) 2630{ 2631 struct mly_softc *sc = mc->mc_sc; 2632 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2633 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2634 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2635 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2636 int transfer; 2637 2638 mly_printf(sc, " command_id %d\n", ge->command_id); 2639 mly_printf(sc, " opcode %d\n", ge->opcode); 2640 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2641 ge->command_control.force_unit_access, 2642 ge->command_control.disable_page_out, 2643 ge->command_control.extended_sg_table, 2644 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2645 ge->command_control.no_auto_sense, 2646 ge->command_control.disable_disconnect); 2647 mly_printf(sc, " data_size %d\n", ge->data_size); 2648 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2649 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2650 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2651 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2652 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2653 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2654 mly_printf(sc, " timeout %d %s\n", 2655 ge->timeout.value, 2656 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2657 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2658 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2659 switch(ge->opcode) { 2660 case MDACMD_SCSIPT: 2661 case MDACMD_SCSI: 2662 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2663 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2664 transfer = 1; 2665 break; 2666 case MDACMD_SCSILC: 2667 case MDACMD_SCSILCPT: 2668 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2669 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2670 transfer = 1; 2671 break; 2672 case MDACMD_IOCTL: 2673 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2674 switch(io->sub_ioctl) { 2675 case MDACIOCTL_SETMEMORYMAILBOX: 2676 mly_printf(sc, " health_buffer_size %d\n", 2677 io->param.setmemorymailbox.health_buffer_size); 2678 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2679 io->param.setmemorymailbox.health_buffer_physaddr); 2680 mly_printf(sc, " command_mailbox 0x%llx\n", 2681 io->param.setmemorymailbox.command_mailbox_physaddr); 2682 mly_printf(sc, " status_mailbox 0x%llx\n", 2683 io->param.setmemorymailbox.status_mailbox_physaddr); 2684 transfer = 0; 2685 break; 2686 2687 case MDACIOCTL_SETREALTIMECLOCK: 2688 case MDACIOCTL_GETHEALTHSTATUS: 2689 case MDACIOCTL_GETCONTROLLERINFO: 2690 case MDACIOCTL_GETLOGDEVINFOVALID: 2691 case MDACIOCTL_GETPHYSDEVINFOVALID: 2692 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2693 case MDACIOCTL_GETLOGDEVSTATISTICS: 2694 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2695 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2696 case MDACIOCTL_CREATENEWCONF: 2697 case MDACIOCTL_ADDNEWCONF: 2698 case MDACIOCTL_GETDEVCONFINFO: 2699 case MDACIOCTL_GETFREESPACELIST: 2700 case MDACIOCTL_MORE: 2701 case MDACIOCTL_SETPHYSDEVPARAMETER: 2702 case MDACIOCTL_GETPHYSDEVPARAMETER: 2703 case MDACIOCTL_GETLOGDEVPARAMETER: 2704 case MDACIOCTL_SETLOGDEVPARAMETER: 2705 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2706 transfer = 1; 2707 break; 2708 2709 case MDACIOCTL_GETEVENT: 2710 mly_printf(sc, " event %d\n", 2711 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2712 transfer = 1; 2713 break; 2714 2715 case MDACIOCTL_SETRAIDDEVSTATE: 2716 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2717 transfer = 0; 2718 break; 2719 2720 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2721 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2722 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2723 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2724 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2725 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2726 transfer = 0; 2727 break; 2728 2729 case MDACIOCTL_GETGROUPCONFINFO: 2730 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2731 transfer = 1; 2732 break; 2733 2734 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2735 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2736 case MDACIOCTL_STARTDISOCVERY: 2737 case MDACIOCTL_INITPHYSDEVSTART: 2738 case MDACIOCTL_INITPHYSDEVSTOP: 2739 case MDACIOCTL_INITRAIDDEVSTART: 2740 case MDACIOCTL_INITRAIDDEVSTOP: 2741 case MDACIOCTL_REBUILDRAIDDEVSTART: 2742 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2743 case MDACIOCTL_MAKECONSISTENTDATASTART: 2744 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2745 case MDACIOCTL_CONSISTENCYCHECKSTART: 2746 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2747 case MDACIOCTL_RESETDEVICE: 2748 case MDACIOCTL_FLUSHDEVICEDATA: 2749 case MDACIOCTL_PAUSEDEVICE: 2750 case MDACIOCTL_UNPAUSEDEVICE: 2751 case MDACIOCTL_LOCATEDEVICE: 2752 case MDACIOCTL_SETMASTERSLAVEMODE: 2753 case MDACIOCTL_DELETERAIDDEV: 2754 case MDACIOCTL_REPLACEINTERNALDEV: 2755 case MDACIOCTL_CLEARCONF: 2756 case MDACIOCTL_GETCONTROLLERPARAMETER: 2757 case MDACIOCTL_SETCONTRLLERPARAMETER: 2758 case MDACIOCTL_CLEARCONFSUSPMODE: 2759 case MDACIOCTL_STOREIMAGE: 2760 case MDACIOCTL_READIMAGE: 2761 case MDACIOCTL_FLASHIMAGES: 2762 case MDACIOCTL_RENAMERAIDDEV: 2763 default: /* no idea what to print */ 2764 transfer = 0; 2765 break; 2766 } 2767 break; 2768 2769 case MDACMD_IOCTLCHECK: 2770 case MDACMD_MEMCOPY: 2771 default: 2772 transfer = 0; 2773 break; /* print nothing */ 2774 } 2775 if (transfer) { 2776 if (ge->command_control.extended_sg_table) { 2777 mly_printf(sc, " sg table 0x%llx/%d\n", 2778 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2779 } else { 2780 mly_printf(sc, " 0000 0x%llx/%lld\n", 2781 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2782 mly_printf(sc, " 0001 0x%llx/%lld\n", 2783 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2784 } 2785 } 2786} 2787 2788/******************************************************************************** 2789 * Panic in a slightly informative fashion 2790 */ 2791static void 2792mly_panic(struct mly_softc *sc, char *reason) 2793{ 2794 mly_printstate(sc); 2795 panic(reason); 2796} 2797 2798/******************************************************************************** 2799 * Print queue statistics, callable from DDB. 2800 */ 2801void 2802mly_print_controller(int controller) 2803{ 2804 struct mly_softc *sc; 2805 2806 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2807 printf("mly: controller %d invalid\n", controller); 2808 } else { 2809 device_printf(sc->mly_dev, "queue curr max\n"); 2810 device_printf(sc->mly_dev, "free %04d/%04d\n", 2811 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2812 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2813 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2814 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2815 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2816 } 2817} 2818#endif 2819 2820 2821/******************************************************************************** 2822 ******************************************************************************** 2823 Control device interface 2824 ******************************************************************************** 2825 ********************************************************************************/ 2826 2827/******************************************************************************** 2828 * Accept an open operation on the control device. 2829 */ 2830static int 2831mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td) 2832{ 2833 struct mly_softc *sc = dev->si_drv1; 2834 2835 MLY_LOCK(sc); 2836 sc->mly_state |= MLY_STATE_OPEN; 2837 MLY_UNLOCK(sc); 2838 return(0); 2839} 2840 2841/******************************************************************************** 2842 * Accept the last close on the control device. 2843 */ 2844static int 2845mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td) 2846{ 2847 struct mly_softc *sc = dev->si_drv1; 2848 2849 MLY_LOCK(sc); 2850 sc->mly_state &= ~MLY_STATE_OPEN; 2851 MLY_UNLOCK(sc); 2852 return (0); 2853} 2854 2855/******************************************************************************** 2856 * Handle controller-specific control operations. 2857 */ 2858static int 2859mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 2860 int32_t flag, struct thread *td) 2861{ 2862 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2863 struct mly_user_command *uc = (struct mly_user_command *)addr; 2864 struct mly_user_health *uh = (struct mly_user_health *)addr; 2865 2866 switch(cmd) { 2867 case MLYIO_COMMAND: 2868 return(mly_user_command(sc, uc)); 2869 case MLYIO_HEALTH: 2870 return(mly_user_health(sc, uh)); 2871 default: 2872 return(ENOIOCTL); 2873 } 2874} 2875 2876/******************************************************************************** 2877 * Execute a command passed in from userspace. 2878 * 2879 * The control structure contains the actual command for the controller, as well 2880 * as the user-space data pointer and data size, and an optional sense buffer 2881 * size/pointer. On completion, the data size is adjusted to the command 2882 * residual, and the sense buffer size to the size of the returned sense data. 2883 * 2884 */ 2885static int 2886mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2887{ 2888 struct mly_command *mc; 2889 int error; 2890 2891 /* allocate a command */ 2892 MLY_LOCK(sc); 2893 if (mly_alloc_command(sc, &mc)) { 2894 MLY_UNLOCK(sc); 2895 return (ENOMEM); /* XXX Linux version will wait for a command */ 2896 } 2897 MLY_UNLOCK(sc); 2898 2899 /* handle data size/direction */ 2900 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2901 if (mc->mc_length > 0) { 2902 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 2903 error = ENOMEM; 2904 goto out; 2905 } 2906 } 2907 if (uc->DataTransferLength > 0) { 2908 mc->mc_flags |= MLY_CMD_DATAIN; 2909 bzero(mc->mc_data, mc->mc_length); 2910 } 2911 if (uc->DataTransferLength < 0) { 2912 mc->mc_flags |= MLY_CMD_DATAOUT; 2913 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2914 goto out; 2915 } 2916 2917 /* copy the controller command */ 2918 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2919 2920 /* clear command completion handler so that we get woken up */ 2921 mc->mc_complete = NULL; 2922 2923 /* execute the command */ 2924 MLY_LOCK(sc); 2925 if ((error = mly_start(mc)) != 0) { 2926 MLY_UNLOCK(sc); 2927 goto out; 2928 } 2929 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2930 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlyioctl", 0); 2931 MLY_UNLOCK(sc); 2932 2933 /* return the data to userspace */ 2934 if (uc->DataTransferLength > 0) 2935 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2936 goto out; 2937 2938 /* return the sense buffer to userspace */ 2939 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2940 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2941 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2942 goto out; 2943 } 2944 2945 /* return command results to userspace (caller will copy out) */ 2946 uc->DataTransferLength = mc->mc_resid; 2947 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2948 uc->CommandStatus = mc->mc_status; 2949 error = 0; 2950 2951 out: 2952 if (mc->mc_data != NULL) 2953 free(mc->mc_data, M_DEVBUF); 2954 MLY_LOCK(sc); 2955 mly_release_command(mc); 2956 MLY_UNLOCK(sc); 2957 return(error); 2958} 2959 2960/******************************************************************************** 2961 * Return health status to userspace. If the health change index in the user 2962 * structure does not match that currently exported by the controller, we 2963 * return the current status immediately. Otherwise, we block until either 2964 * interrupted or new status is delivered. 2965 */ 2966static int 2967mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2968{ 2969 struct mly_health_status mh; 2970 int error; 2971 2972 /* fetch the current health status from userspace */ 2973 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2974 return(error); 2975 2976 /* spin waiting for a status update */ 2977 MLY_LOCK(sc); 2978 error = EWOULDBLOCK; 2979 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2980 error = mtx_sleep(&sc->mly_event_change, &sc->mly_lock, PRIBIO | PCATCH, 2981 "mlyhealth", 0); 2982 mh = sc->mly_mmbox->mmm_health.status; 2983 MLY_UNLOCK(sc); 2984 2985 /* copy the controller's health status buffer out */ 2986 error = copyout(&mh, uh->HealthStatusBuffer, sizeof(mh)); 2987 return(error); 2988} 2989 2990#ifdef MLY_DEBUG 2991static void 2992mly_timeout(void *arg) 2993{ 2994 struct mly_softc *sc; 2995 struct mly_command *mc; 2996 int deadline; 2997 2998 sc = arg; 2999 MLY_ASSERT_LOCKED(sc); 3000 deadline = time_second - MLY_CMD_TIMEOUT; 3001 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 3002 if ((mc->mc_timestamp < deadline)) { 3003 device_printf(sc->mly_dev, 3004 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 3005 (int)(time_second - mc->mc_timestamp)); 3006 } 3007 } 3008 3009 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc); 3010} 3011#endif 3012