mly.c revision 202161
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: head/sys/dev/mly/mly.c 202161 2010-01-12 17:59:58Z gavin $ 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(void *context, int pending); 92 93static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 94static void mly_release_command(struct mly_command *mc); 95static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 96static int mly_alloc_commands(struct mly_softc *sc); 97static void mly_release_commands(struct mly_softc *sc); 98static void mly_map_command(struct mly_command *mc); 99static void mly_unmap_command(struct mly_command *mc); 100 101static int mly_cam_attach(struct mly_softc *sc); 102static void mly_cam_detach(struct mly_softc *sc); 103static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 104static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 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 int mly_timeout(struct mly_softc *sc); 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_flags = D_NEEDGIANT, 156 .d_open = mly_user_open, 157 .d_close = mly_user_close, 158 .d_ioctl = mly_user_ioctl, 159 .d_name = "mly", 160}; 161 162/******************************************************************************** 163 ******************************************************************************** 164 Device Interface 165 ******************************************************************************** 166 ********************************************************************************/ 167 168static struct mly_ident 169{ 170 u_int16_t vendor; 171 u_int16_t device; 172 u_int16_t subvendor; 173 u_int16_t subdevice; 174 int hwif; 175 char *desc; 176} mly_identifiers[] = { 177 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 178 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 179 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 180 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 181 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 182 {0, 0, 0, 0, 0, 0} 183}; 184 185/******************************************************************************** 186 * Compare the provided PCI device with the list we support. 187 */ 188static int 189mly_probe(device_t dev) 190{ 191 struct mly_ident *m; 192 193 debug_called(1); 194 195 for (m = mly_identifiers; m->vendor != 0; m++) { 196 if ((m->vendor == pci_get_vendor(dev)) && 197 (m->device == pci_get_device(dev)) && 198 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 199 (m->subdevice == pci_get_subdevice(dev))))) { 200 201 device_set_desc(dev, m->desc); 202 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 203 } 204 } 205 return(ENXIO); 206} 207 208/******************************************************************************** 209 * Initialise the controller and softc 210 */ 211static int 212mly_attach(device_t dev) 213{ 214 struct mly_softc *sc = device_get_softc(dev); 215 int error; 216 217 debug_called(1); 218 219 sc->mly_dev = dev; 220 221#ifdef MLY_DEBUG 222 if (device_get_unit(sc->mly_dev) == 0) 223 mly_softc0 = sc; 224#endif 225 226 /* 227 * Do PCI-specific initialisation. 228 */ 229 if ((error = mly_pci_attach(sc)) != 0) 230 goto out; 231 232 /* 233 * Initialise per-controller queues. 234 */ 235 mly_initq_free(sc); 236 mly_initq_busy(sc); 237 mly_initq_complete(sc); 238 239 /* 240 * Initialise command-completion task. 241 */ 242 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 243 244 /* disable interrupts before we start talking to the controller */ 245 MLY_MASK_INTERRUPTS(sc); 246 247 /* 248 * Wait for the controller to come ready, handshake with the firmware if required. 249 * This is typically only necessary on platforms where the controller BIOS does not 250 * run. 251 */ 252 if ((error = mly_fwhandshake(sc))) 253 goto out; 254 255 /* 256 * Allocate initial command buffers. 257 */ 258 if ((error = mly_alloc_commands(sc))) 259 goto out; 260 261 /* 262 * Obtain controller feature information 263 */ 264 if ((error = mly_get_controllerinfo(sc))) 265 goto out; 266 267 /* 268 * Reallocate command buffers now we know how many we want. 269 */ 270 mly_release_commands(sc); 271 if ((error = mly_alloc_commands(sc))) 272 goto out; 273 274 /* 275 * Get the current event counter for health purposes, populate the initial 276 * health status buffer. 277 */ 278 if ((error = mly_get_eventstatus(sc))) 279 goto out; 280 281 /* 282 * Enable memory-mailbox mode. 283 */ 284 if ((error = mly_enable_mmbox(sc))) 285 goto out; 286 287 /* 288 * Attach to CAM. 289 */ 290 if ((error = mly_cam_attach(sc))) 291 goto out; 292 293 /* 294 * Print a little information about the controller 295 */ 296 mly_describe_controller(sc); 297 298 /* 299 * Mark all attached devices for rescan. 300 */ 301 mly_scan_devices(sc); 302 303 /* 304 * Instigate the first status poll immediately. Rescan completions won't 305 * happen until interrupts are enabled, which should still be before 306 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 307 */ 308 mly_periodic((void *)sc); 309 310 /* 311 * Create the control device. 312 */ 313 sc->mly_dev_t = make_dev(&mly_cdevsw, 0, UID_ROOT, GID_OPERATOR, 314 S_IRUSR | S_IWUSR, "mly%d", device_get_unit(sc->mly_dev)); 315 sc->mly_dev_t->si_drv1 = sc; 316 317 /* enable interrupts now */ 318 MLY_UNMASK_INTERRUPTS(sc); 319 320#ifdef MLY_DEBUG 321 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz); 322#endif 323 324 out: 325 if (error != 0) 326 mly_free(sc); 327 return(error); 328} 329 330/******************************************************************************** 331 * Perform PCI-specific initialisation. 332 */ 333static int 334mly_pci_attach(struct mly_softc *sc) 335{ 336 int i, error; 337 u_int32_t command; 338 339 debug_called(1); 340 341 /* assume failure is 'not configured' */ 342 error = ENXIO; 343 344 /* 345 * Verify that the adapter is correctly set up in PCI space. 346 * 347 * XXX we shouldn't do this; the PCI code should. 348 */ 349 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 350 command |= PCIM_CMD_BUSMASTEREN; 351 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 352 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 353 if (!(command & PCIM_CMD_BUSMASTEREN)) { 354 mly_printf(sc, "can't enable busmaster feature\n"); 355 goto fail; 356 } 357 if ((command & PCIM_CMD_MEMEN) == 0) { 358 mly_printf(sc, "memory window not available\n"); 359 goto fail; 360 } 361 362 /* 363 * Allocate the PCI register window. 364 */ 365 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 366 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 367 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 368 mly_printf(sc, "can't allocate register window\n"); 369 goto fail; 370 } 371 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 372 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 373 374 /* 375 * Allocate and connect our interrupt. 376 */ 377 sc->mly_irq_rid = 0; 378 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 379 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 380 mly_printf(sc, "can't allocate interrupt\n"); 381 goto fail; 382 } 383 if (bus_setup_intr(sc->mly_dev, sc->mly_irq, INTR_TYPE_CAM | INTR_ENTROPY, NULL, mly_intr, sc, &sc->mly_intr)) { 384 mly_printf(sc, "can't set up interrupt\n"); 385 goto fail; 386 } 387 388 /* assume failure is 'out of memory' */ 389 error = ENOMEM; 390 391 /* 392 * Allocate the parent bus DMA tag appropriate for our PCI interface. 393 * 394 * Note that all of these controllers are 64-bit capable. 395 */ 396 if (bus_dma_tag_create(NULL, /* parent */ 397 1, 0, /* alignment, boundary */ 398 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 399 BUS_SPACE_MAXADDR, /* highaddr */ 400 NULL, NULL, /* filter, filterarg */ 401 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 402 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 403 BUS_DMA_ALLOCNOW, /* flags */ 404 NULL, /* lockfunc */ 405 NULL, /* lockarg */ 406 &sc->mly_parent_dmat)) { 407 mly_printf(sc, "can't allocate parent DMA tag\n"); 408 goto fail; 409 } 410 411 /* 412 * Create DMA tag for mapping buffers into controller-addressable space. 413 */ 414 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 415 1, 0, /* alignment, boundary */ 416 BUS_SPACE_MAXADDR, /* lowaddr */ 417 BUS_SPACE_MAXADDR, /* highaddr */ 418 NULL, NULL, /* filter, filterarg */ 419 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 420 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 421 0, /* flags */ 422 busdma_lock_mutex, /* lockfunc */ 423 &Giant, /* lockarg */ 424 &sc->mly_buffer_dmat)) { 425 mly_printf(sc, "can't allocate buffer DMA tag\n"); 426 goto fail; 427 } 428 429 /* 430 * Initialise the DMA tag for command packets. 431 */ 432 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 433 1, 0, /* alignment, boundary */ 434 BUS_SPACE_MAXADDR, /* lowaddr */ 435 BUS_SPACE_MAXADDR, /* highaddr */ 436 NULL, NULL, /* filter, filterarg */ 437 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 438 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 439 BUS_DMA_ALLOCNOW, /* flags */ 440 NULL, NULL, /* lockfunc, lockarg */ 441 &sc->mly_packet_dmat)) { 442 mly_printf(sc, "can't allocate command packet DMA tag\n"); 443 goto fail; 444 } 445 446 /* 447 * Detect the hardware interface version 448 */ 449 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 450 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 451 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 452 sc->mly_hwif = mly_identifiers[i].hwif; 453 switch(sc->mly_hwif) { 454 case MLY_HWIF_I960RX: 455 debug(1, "set hardware up for i960RX"); 456 sc->mly_doorbell_true = 0x00; 457 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 458 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 459 sc->mly_idbr = MLY_I960RX_IDBR; 460 sc->mly_odbr = MLY_I960RX_ODBR; 461 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 462 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 463 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 464 break; 465 case MLY_HWIF_STRONGARM: 466 debug(1, "set hardware up for StrongARM"); 467 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 468 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 469 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 470 sc->mly_idbr = MLY_STRONGARM_IDBR; 471 sc->mly_odbr = MLY_STRONGARM_ODBR; 472 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 473 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 474 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 475 break; 476 } 477 break; 478 } 479 } 480 481 /* 482 * Create the scatter/gather mappings. 483 */ 484 if ((error = mly_sg_map(sc))) 485 goto fail; 486 487 /* 488 * Allocate and map the memory mailbox 489 */ 490 if ((error = mly_mmbox_map(sc))) 491 goto fail; 492 493 error = 0; 494 495fail: 496 return(error); 497} 498 499/******************************************************************************** 500 * Shut the controller down and detach all our resources. 501 */ 502static int 503mly_detach(device_t dev) 504{ 505 int error; 506 507 if ((error = mly_shutdown(dev)) != 0) 508 return(error); 509 510 mly_free(device_get_softc(dev)); 511 return(0); 512} 513 514/******************************************************************************** 515 * Bring the controller to a state where it can be safely left alone. 516 * 517 * Note that it should not be necessary to wait for any outstanding commands, 518 * as they should be completed prior to calling here. 519 * 520 * XXX this applies for I/O, but not status polls; we should beware of 521 * the case where a status command is running while we detach. 522 */ 523static int 524mly_shutdown(device_t dev) 525{ 526 struct mly_softc *sc = device_get_softc(dev); 527 528 debug_called(1); 529 530 if (sc->mly_state & MLY_STATE_OPEN) 531 return(EBUSY); 532 533 /* kill the periodic event */ 534 untimeout(mly_periodic, sc, sc->mly_periodic); 535 536 /* flush controller */ 537 mly_printf(sc, "flushing cache..."); 538 printf("%s\n", mly_flush(sc) ? "failed" : "done"); 539 540 MLY_MASK_INTERRUPTS(sc); 541 542 return(0); 543} 544 545/******************************************************************************* 546 * Take an interrupt, or be poked by other code to look for interrupt-worthy 547 * status. 548 */ 549static void 550mly_intr(void *arg) 551{ 552 struct mly_softc *sc = (struct mly_softc *)arg; 553 554 debug_called(2); 555 556 mly_done(sc); 557}; 558 559/******************************************************************************** 560 ******************************************************************************** 561 Bus-dependant Resource Management 562 ******************************************************************************** 563 ********************************************************************************/ 564 565/******************************************************************************** 566 * Allocate memory for the scatter/gather tables 567 */ 568static int 569mly_sg_map(struct mly_softc *sc) 570{ 571 size_t segsize; 572 573 debug_called(1); 574 575 /* 576 * Create a single tag describing a region large enough to hold all of 577 * the s/g lists we will need. 578 */ 579 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 580 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 581 1, 0, /* alignment,boundary */ 582 BUS_SPACE_MAXADDR, /* lowaddr */ 583 BUS_SPACE_MAXADDR, /* highaddr */ 584 NULL, NULL, /* filter, filterarg */ 585 segsize, 1, /* maxsize, nsegments */ 586 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 587 BUS_DMA_ALLOCNOW, /* flags */ 588 NULL, NULL, /* lockfunc, lockarg */ 589 &sc->mly_sg_dmat)) { 590 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 591 return(ENOMEM); 592 } 593 594 /* 595 * Allocate enough s/g maps for all commands and permanently map them into 596 * controller-visible space. 597 * 598 * XXX this assumes we can get enough space for all the s/g maps in one 599 * contiguous slab. 600 */ 601 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 602 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 603 mly_printf(sc, "can't allocate s/g table\n"); 604 return(ENOMEM); 605 } 606 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 607 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 608 return (ENOMEM); 609 return(0); 610} 611 612/******************************************************************************** 613 * Save the physical address of the base of the s/g table. 614 */ 615static void 616mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 617{ 618 struct mly_softc *sc = (struct mly_softc *)arg; 619 620 debug_called(1); 621 622 /* save base of s/g table's address in bus space */ 623 sc->mly_sg_busaddr = segs->ds_addr; 624} 625 626/******************************************************************************** 627 * Allocate memory for the memory-mailbox interface 628 */ 629static int 630mly_mmbox_map(struct mly_softc *sc) 631{ 632 633 /* 634 * Create a DMA tag for a single contiguous region large enough for the 635 * memory mailbox structure. 636 */ 637 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 638 1, 0, /* alignment,boundary */ 639 BUS_SPACE_MAXADDR, /* lowaddr */ 640 BUS_SPACE_MAXADDR, /* highaddr */ 641 NULL, NULL, /* filter, filterarg */ 642 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 643 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 644 BUS_DMA_ALLOCNOW, /* flags */ 645 NULL, NULL, /* lockfunc, lockarg */ 646 &sc->mly_mmbox_dmat)) { 647 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 648 return(ENOMEM); 649 } 650 651 /* 652 * Allocate the buffer 653 */ 654 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 655 mly_printf(sc, "can't allocate memory mailbox\n"); 656 return(ENOMEM); 657 } 658 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 659 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 660 BUS_DMA_NOWAIT) != 0) 661 return (ENOMEM); 662 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 663 return(0); 664 665} 666 667/******************************************************************************** 668 * Save the physical address of the memory mailbox 669 */ 670static void 671mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 672{ 673 struct mly_softc *sc = (struct mly_softc *)arg; 674 675 debug_called(1); 676 677 sc->mly_mmbox_busaddr = segs->ds_addr; 678} 679 680/******************************************************************************** 681 * Free all of the resources associated with (sc) 682 * 683 * Should not be called if the controller is active. 684 */ 685static void 686mly_free(struct mly_softc *sc) 687{ 688 689 debug_called(1); 690 691 /* Remove the management device */ 692 destroy_dev(sc->mly_dev_t); 693 694 /* detach from CAM */ 695 mly_cam_detach(sc); 696 697 /* release command memory */ 698 mly_release_commands(sc); 699 700 /* throw away the controllerinfo structure */ 701 if (sc->mly_controllerinfo != NULL) 702 free(sc->mly_controllerinfo, M_DEVBUF); 703 704 /* throw away the controllerparam structure */ 705 if (sc->mly_controllerparam != NULL) 706 free(sc->mly_controllerparam, M_DEVBUF); 707 708 /* destroy data-transfer DMA tag */ 709 if (sc->mly_buffer_dmat) 710 bus_dma_tag_destroy(sc->mly_buffer_dmat); 711 712 /* free and destroy DMA memory and tag for s/g lists */ 713 if (sc->mly_sg_table) { 714 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 715 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 716 } 717 if (sc->mly_sg_dmat) 718 bus_dma_tag_destroy(sc->mly_sg_dmat); 719 720 /* free and destroy DMA memory and tag for memory mailbox */ 721 if (sc->mly_mmbox) { 722 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 723 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 724 } 725 if (sc->mly_mmbox_dmat) 726 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 727 728 /* disconnect the interrupt handler */ 729 if (sc->mly_intr) 730 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 731 if (sc->mly_irq != NULL) 732 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 733 734 /* destroy the parent DMA tag */ 735 if (sc->mly_parent_dmat) 736 bus_dma_tag_destroy(sc->mly_parent_dmat); 737 738 /* release the register window mapping */ 739 if (sc->mly_regs_resource != NULL) 740 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 741} 742 743/******************************************************************************** 744 ******************************************************************************** 745 Command Wrappers 746 ******************************************************************************** 747 ********************************************************************************/ 748 749/******************************************************************************** 750 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 751 */ 752static int 753mly_get_controllerinfo(struct mly_softc *sc) 754{ 755 struct mly_command_ioctl mci; 756 u_int8_t status; 757 int error; 758 759 debug_called(1); 760 761 if (sc->mly_controllerinfo != NULL) 762 free(sc->mly_controllerinfo, M_DEVBUF); 763 764 /* build the getcontrollerinfo ioctl and send it */ 765 bzero(&mci, sizeof(mci)); 766 sc->mly_controllerinfo = NULL; 767 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 768 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 769 &status, NULL, NULL))) 770 return(error); 771 if (status != 0) 772 return(EIO); 773 774 if (sc->mly_controllerparam != NULL) 775 free(sc->mly_controllerparam, M_DEVBUF); 776 777 /* build the getcontrollerparameter ioctl and send it */ 778 bzero(&mci, sizeof(mci)); 779 sc->mly_controllerparam = NULL; 780 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 781 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 782 &status, NULL, NULL))) 783 return(error); 784 if (status != 0) 785 return(EIO); 786 787 return(0); 788} 789 790/******************************************************************************** 791 * Schedule all possible devices for a rescan. 792 * 793 */ 794static void 795mly_scan_devices(struct mly_softc *sc) 796{ 797 int bus, target; 798 799 debug_called(1); 800 801 /* 802 * Clear any previous BTL information. 803 */ 804 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 805 806 /* 807 * Mark all devices as requiring a rescan, and let the next 808 * periodic scan collect them. 809 */ 810 for (bus = 0; bus < sc->mly_cam_channels; bus++) 811 if (MLY_BUS_IS_VALID(sc, bus)) 812 for (target = 0; target < MLY_MAX_TARGETS; target++) 813 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 814 815} 816 817/******************************************************************************** 818 * Rescan a device, possibly as a consequence of getting an event which suggests 819 * that it may have changed. 820 * 821 * If we suffer resource starvation, we can abandon the rescan as we'll be 822 * retried. 823 */ 824static void 825mly_rescan_btl(struct mly_softc *sc, int bus, int target) 826{ 827 struct mly_command *mc; 828 struct mly_command_ioctl *mci; 829 830 debug_called(1); 831 832 /* check that this bus is valid */ 833 if (!MLY_BUS_IS_VALID(sc, bus)) 834 return; 835 836 /* get a command */ 837 if (mly_alloc_command(sc, &mc)) 838 return; 839 840 /* set up the data buffer */ 841 if ((mc->mc_data = malloc(sizeof(union mly_devinfo), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 842 mly_release_command(mc); 843 return; 844 } 845 mc->mc_flags |= MLY_CMD_DATAIN; 846 mc->mc_complete = mly_complete_rescan; 847 848 /* 849 * Build the ioctl. 850 */ 851 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 852 mci->opcode = MDACMD_IOCTL; 853 mci->addr.phys.controller = 0; 854 mci->timeout.value = 30; 855 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 856 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 857 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 858 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 859 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 860 debug(1, "logical device %d", mci->addr.log.logdev); 861 } else { 862 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 863 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 864 mci->addr.phys.lun = 0; 865 mci->addr.phys.target = target; 866 mci->addr.phys.channel = bus; 867 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 868 } 869 870 /* 871 * Dispatch the command. If we successfully send the command, clear the rescan 872 * bit. 873 */ 874 if (mly_start(mc) != 0) { 875 mly_release_command(mc); 876 } else { 877 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 878 } 879} 880 881/******************************************************************************** 882 * Handle the completion of a rescan operation 883 */ 884static void 885mly_complete_rescan(struct mly_command *mc) 886{ 887 struct mly_softc *sc = mc->mc_sc; 888 struct mly_ioctl_getlogdevinfovalid *ldi; 889 struct mly_ioctl_getphysdevinfovalid *pdi; 890 struct mly_command_ioctl *mci; 891 struct mly_btl btl, *btlp; 892 int bus, target, rescan; 893 894 debug_called(1); 895 896 /* 897 * Recover the bus and target from the command. We need these even in 898 * the case where we don't have a useful response. 899 */ 900 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 901 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 902 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 903 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 904 } else { 905 bus = mci->addr.phys.channel; 906 target = mci->addr.phys.target; 907 } 908 /* XXX validate bus/target? */ 909 910 /* the default result is 'no device' */ 911 bzero(&btl, sizeof(btl)); 912 913 /* if the rescan completed OK, we have possibly-new BTL data */ 914 if (mc->mc_status == 0) { 915 if (mc->mc_length == sizeof(*ldi)) { 916 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 917 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 918 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 919 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 920 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 921 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 922 /* XXX what can we do about this? */ 923 } 924 btl.mb_flags = MLY_BTL_LOGICAL; 925 btl.mb_type = ldi->raid_level; 926 btl.mb_state = ldi->state; 927 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 928 mly_describe_code(mly_table_device_type, ldi->raid_level), 929 mly_describe_code(mly_table_device_state, ldi->state)); 930 } else if (mc->mc_length == sizeof(*pdi)) { 931 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 932 if ((pdi->channel != bus) || (pdi->target != target)) { 933 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 934 bus, target, pdi->channel, pdi->target); 935 /* XXX what can we do about this? */ 936 } 937 btl.mb_flags = MLY_BTL_PHYSICAL; 938 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 939 btl.mb_state = pdi->state; 940 btl.mb_speed = pdi->speed; 941 btl.mb_width = pdi->width; 942 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 943 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 944 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 945 mly_describe_code(mly_table_device_state, pdi->state)); 946 } else { 947 mly_printf(sc, "BTL rescan result invalid\n"); 948 } 949 } 950 951 free(mc->mc_data, M_DEVBUF); 952 mly_release_command(mc); 953 954 /* 955 * Decide whether we need to rescan the device. 956 */ 957 rescan = 0; 958 959 /* device type changes (usually between 'nothing' and 'something') */ 960 btlp = &sc->mly_btl[bus][target]; 961 if (btl.mb_flags != btlp->mb_flags) { 962 debug(1, "flags changed, rescanning"); 963 rescan = 1; 964 } 965 966 /* XXX other reasons? */ 967 968 /* 969 * Update BTL information. 970 */ 971 *btlp = btl; 972 973 /* 974 * Perform CAM rescan if required. 975 */ 976 if (rescan) 977 mly_cam_rescan_btl(sc, bus, target); 978} 979 980/******************************************************************************** 981 * Get the current health status and set the 'next event' counter to suit. 982 */ 983static int 984mly_get_eventstatus(struct mly_softc *sc) 985{ 986 struct mly_command_ioctl mci; 987 struct mly_health_status *mh; 988 u_int8_t status; 989 int error; 990 991 /* build the gethealthstatus ioctl and send it */ 992 bzero(&mci, sizeof(mci)); 993 mh = NULL; 994 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 995 996 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 997 return(error); 998 if (status != 0) 999 return(EIO); 1000 1001 /* get the event counter */ 1002 sc->mly_event_change = mh->change_counter; 1003 sc->mly_event_waiting = mh->next_event; 1004 sc->mly_event_counter = mh->next_event; 1005 1006 /* save the health status into the memory mailbox */ 1007 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1008 1009 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1010 1011 free(mh, M_DEVBUF); 1012 return(0); 1013} 1014 1015/******************************************************************************** 1016 * Enable the memory mailbox mode. 1017 */ 1018static int 1019mly_enable_mmbox(struct mly_softc *sc) 1020{ 1021 struct mly_command_ioctl mci; 1022 u_int8_t *sp, status; 1023 int error; 1024 1025 debug_called(1); 1026 1027 /* build the ioctl and send it */ 1028 bzero(&mci, sizeof(mci)); 1029 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1030 /* set buffer addresses */ 1031 mci.param.setmemorymailbox.command_mailbox_physaddr = 1032 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1033 mci.param.setmemorymailbox.status_mailbox_physaddr = 1034 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1035 mci.param.setmemorymailbox.health_buffer_physaddr = 1036 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1037 1038 /* set buffer sizes - abuse of data_size field is revolting */ 1039 sp = (u_int8_t *)&mci.data_size; 1040 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1041 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1042 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1043 1044 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1045 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1046 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1047 mci.param.setmemorymailbox.health_buffer_physaddr, 1048 mci.param.setmemorymailbox.health_buffer_size); 1049 1050 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1051 return(error); 1052 if (status != 0) 1053 return(EIO); 1054 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1055 debug(1, "memory mailbox active"); 1056 return(0); 1057} 1058 1059/******************************************************************************** 1060 * Flush all pending I/O from the controller. 1061 */ 1062static int 1063mly_flush(struct mly_softc *sc) 1064{ 1065 struct mly_command_ioctl mci; 1066 u_int8_t status; 1067 int error; 1068 1069 debug_called(1); 1070 1071 /* build the ioctl */ 1072 bzero(&mci, sizeof(mci)); 1073 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1074 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1075 1076 /* pass it off to the controller */ 1077 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1078 return(error); 1079 1080 return((status == 0) ? 0 : EIO); 1081} 1082 1083/******************************************************************************** 1084 * Perform an ioctl command. 1085 * 1086 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1087 * the command requires data transfer from the controller, and we will allocate 1088 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1089 * to the controller. 1090 * 1091 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1092 * 1093 * XXX we don't even try to handle the case where datasize > 4k. We should. 1094 */ 1095static int 1096mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1097 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1098{ 1099 struct mly_command *mc; 1100 struct mly_command_ioctl *mci; 1101 int error; 1102 1103 debug_called(1); 1104 1105 mc = NULL; 1106 if (mly_alloc_command(sc, &mc)) { 1107 error = ENOMEM; 1108 goto out; 1109 } 1110 1111 /* copy the ioctl structure, but save some important fields and then fixup */ 1112 mci = &mc->mc_packet->ioctl; 1113 ioctl->sense_buffer_address = mci->sense_buffer_address; 1114 ioctl->maximum_sense_size = mci->maximum_sense_size; 1115 *mci = *ioctl; 1116 mci->opcode = MDACMD_IOCTL; 1117 mci->timeout.value = 30; 1118 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1119 1120 /* handle the data buffer */ 1121 if (data != NULL) { 1122 if (*data == NULL) { 1123 /* allocate data buffer */ 1124 if ((mc->mc_data = malloc(datasize, M_DEVBUF, M_NOWAIT)) == NULL) { 1125 error = ENOMEM; 1126 goto out; 1127 } 1128 mc->mc_flags |= MLY_CMD_DATAIN; 1129 } else { 1130 mc->mc_data = *data; 1131 mc->mc_flags |= MLY_CMD_DATAOUT; 1132 } 1133 mc->mc_length = datasize; 1134 mc->mc_packet->generic.data_size = datasize; 1135 } 1136 1137 /* run the command */ 1138 if ((error = mly_immediate_command(mc))) 1139 goto out; 1140 1141 /* clean up and return any data */ 1142 *status = mc->mc_status; 1143 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1144 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1145 *sense_length = mc->mc_sense; 1146 goto out; 1147 } 1148 1149 /* should we return a data pointer? */ 1150 if ((data != NULL) && (*data == NULL)) 1151 *data = mc->mc_data; 1152 1153 /* command completed OK */ 1154 error = 0; 1155 1156out: 1157 if (mc != NULL) { 1158 /* do we need to free a data buffer we allocated? */ 1159 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1160 free(mc->mc_data, M_DEVBUF); 1161 mly_release_command(mc); 1162 } 1163 return(error); 1164} 1165 1166/******************************************************************************** 1167 * Check for event(s) outstanding in the controller. 1168 */ 1169static void 1170mly_check_event(struct mly_softc *sc) 1171{ 1172 1173 /* 1174 * The controller may have updated the health status information, 1175 * so check for it here. Note that the counters are all in host memory, 1176 * so this check is very cheap. Also note that we depend on checking on 1177 * completion 1178 */ 1179 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1180 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1181 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1182 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1183 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1184 1185 /* wake up anyone that might be interested in this */ 1186 wakeup(&sc->mly_event_change); 1187 } 1188 if (sc->mly_event_counter != sc->mly_event_waiting) 1189 mly_fetch_event(sc); 1190} 1191 1192/******************************************************************************** 1193 * Fetch one event from the controller. 1194 * 1195 * If we fail due to resource starvation, we'll be retried the next time a 1196 * command completes. 1197 */ 1198static void 1199mly_fetch_event(struct mly_softc *sc) 1200{ 1201 struct mly_command *mc; 1202 struct mly_command_ioctl *mci; 1203 int s; 1204 u_int32_t event; 1205 1206 debug_called(1); 1207 1208 /* get a command */ 1209 if (mly_alloc_command(sc, &mc)) 1210 return; 1211 1212 /* set up the data buffer */ 1213 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 1214 mly_release_command(mc); 1215 return; 1216 } 1217 mc->mc_length = sizeof(struct mly_event); 1218 mc->mc_flags |= MLY_CMD_DATAIN; 1219 mc->mc_complete = mly_complete_event; 1220 1221 /* 1222 * Get an event number to fetch. It's possible that we've raced with another 1223 * context for the last event, in which case there will be no more events. 1224 */ 1225 s = splcam(); 1226 if (sc->mly_event_counter == sc->mly_event_waiting) { 1227 mly_release_command(mc); 1228 splx(s); 1229 return; 1230 } 1231 event = sc->mly_event_counter++; 1232 splx(s); 1233 1234 /* 1235 * Build the ioctl. 1236 * 1237 * At this point we are committed to sending this request, as it 1238 * will be the only one constructed for this particular event number. 1239 */ 1240 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1241 mci->opcode = MDACMD_IOCTL; 1242 mci->data_size = sizeof(struct mly_event); 1243 mci->addr.phys.lun = (event >> 16) & 0xff; 1244 mci->addr.phys.target = (event >> 24) & 0xff; 1245 mci->addr.phys.channel = 0; 1246 mci->addr.phys.controller = 0; 1247 mci->timeout.value = 30; 1248 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1249 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1250 mci->param.getevent.sequence_number_low = event & 0xffff; 1251 1252 debug(1, "fetch event %u", event); 1253 1254 /* 1255 * Submit the command. 1256 * 1257 * Note that failure of mly_start() will result in this event never being 1258 * fetched. 1259 */ 1260 if (mly_start(mc) != 0) { 1261 mly_printf(sc, "couldn't fetch event %u\n", event); 1262 mly_release_command(mc); 1263 } 1264} 1265 1266/******************************************************************************** 1267 * Handle the completion of an event poll. 1268 */ 1269static void 1270mly_complete_event(struct mly_command *mc) 1271{ 1272 struct mly_softc *sc = mc->mc_sc; 1273 struct mly_event *me = (struct mly_event *)mc->mc_data; 1274 1275 debug_called(1); 1276 1277 /* 1278 * If the event was successfully fetched, process it. 1279 */ 1280 if (mc->mc_status == SCSI_STATUS_OK) { 1281 mly_process_event(sc, me); 1282 free(me, M_DEVBUF); 1283 } 1284 mly_release_command(mc); 1285 1286 /* 1287 * Check for another event. 1288 */ 1289 mly_check_event(sc); 1290} 1291 1292/******************************************************************************** 1293 * Process a controller event. 1294 */ 1295static void 1296mly_process_event(struct mly_softc *sc, struct mly_event *me) 1297{ 1298 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1299 char *fp, *tp; 1300 int bus, target, event, class, action; 1301 1302 /* 1303 * Errors can be reported using vendor-unique sense data. In this case, the 1304 * event code will be 0x1c (Request sense data present), the sense key will 1305 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1306 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1307 * and low seven bits of the ASC (low seven bits of the high byte). 1308 */ 1309 if ((me->code == 0x1c) && 1310 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1311 (ssd->add_sense_code & 0x80)) { 1312 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1313 } else { 1314 event = me->code; 1315 } 1316 1317 /* look up event, get codes */ 1318 fp = mly_describe_code(mly_table_event, event); 1319 1320 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1321 1322 /* quiet event? */ 1323 class = fp[0]; 1324 if (isupper(class) && bootverbose) 1325 class = tolower(class); 1326 1327 /* get action code, text string */ 1328 action = fp[1]; 1329 tp = &fp[2]; 1330 1331 /* 1332 * Print some information about the event. 1333 * 1334 * This code uses a table derived from the corresponding portion of the Linux 1335 * driver, and thus the parser is very similar. 1336 */ 1337 switch(class) { 1338 case 'p': /* error on physical device */ 1339 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1340 if (action == 'r') 1341 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1342 break; 1343 case 'l': /* error on logical unit */ 1344 case 'm': /* message about logical unit */ 1345 bus = MLY_LOGDEV_BUS(sc, me->lun); 1346 target = MLY_LOGDEV_TARGET(sc, me->lun); 1347 mly_name_device(sc, bus, target); 1348 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1349 if (action == 'r') 1350 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1351 break; 1352 break; 1353 case 's': /* report of sense data */ 1354 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1355 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1356 (ssd->add_sense_code == 0x04) && 1357 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1358 break; /* ignore NO_SENSE or NOT_READY in one case */ 1359 1360 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1361 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1362 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1363 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1364 if (action == 'r') 1365 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1366 break; 1367 case 'e': 1368 mly_printf(sc, tp, me->target, me->lun); 1369 printf("\n"); 1370 break; 1371 case 'c': 1372 mly_printf(sc, "controller %s\n", tp); 1373 break; 1374 case '?': 1375 mly_printf(sc, "%s - %d\n", tp, me->code); 1376 break; 1377 default: /* probably a 'noisy' event being ignored */ 1378 break; 1379 } 1380} 1381 1382/******************************************************************************** 1383 * Perform periodic activities. 1384 */ 1385static void 1386mly_periodic(void *data) 1387{ 1388 struct mly_softc *sc = (struct mly_softc *)data; 1389 int bus, target; 1390 1391 debug_called(2); 1392 1393 /* 1394 * Scan devices. 1395 */ 1396 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1397 if (MLY_BUS_IS_VALID(sc, bus)) { 1398 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1399 1400 /* ignore the controller in this scan */ 1401 if (target == sc->mly_controllerparam->initiator_id) 1402 continue; 1403 1404 /* perform device rescan? */ 1405 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1406 mly_rescan_btl(sc, bus, target); 1407 } 1408 } 1409 } 1410 1411 /* check for controller events */ 1412 mly_check_event(sc); 1413 1414 /* reschedule ourselves */ 1415 sc->mly_periodic = timeout(mly_periodic, sc, MLY_PERIODIC_INTERVAL * hz); 1416} 1417 1418/******************************************************************************** 1419 ******************************************************************************** 1420 Command Processing 1421 ******************************************************************************** 1422 ********************************************************************************/ 1423 1424/******************************************************************************** 1425 * Run a command and wait for it to complete. 1426 * 1427 */ 1428static int 1429mly_immediate_command(struct mly_command *mc) 1430{ 1431 struct mly_softc *sc = mc->mc_sc; 1432 int error, s; 1433 1434 debug_called(1); 1435 1436 /* spinning at splcam is ugly, but we're only used during controller init */ 1437 s = splcam(); 1438 if ((error = mly_start(mc))) { 1439 splx(s); 1440 return(error); 1441 } 1442 1443 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1444 /* sleep on the command */ 1445 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1446 tsleep(mc, PRIBIO, "mlywait", 0); 1447 } 1448 } else { 1449 /* spin and collect status while we do */ 1450 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1451 mly_done(mc->mc_sc); 1452 } 1453 } 1454 splx(s); 1455 return(0); 1456} 1457 1458/******************************************************************************** 1459 * Deliver a command to the controller. 1460 * 1461 * XXX it would be good to just queue commands that we can't submit immediately 1462 * and send them later, but we probably want a wrapper for that so that 1463 * we don't hang on a failed submission for an immediate command. 1464 */ 1465static int 1466mly_start(struct mly_command *mc) 1467{ 1468 struct mly_softc *sc = mc->mc_sc; 1469 union mly_command_packet *pkt; 1470 int s; 1471 1472 debug_called(2); 1473 1474 /* 1475 * Set the command up for delivery to the controller. 1476 */ 1477 mly_map_command(mc); 1478 mc->mc_packet->generic.command_id = mc->mc_slot; 1479 1480#ifdef MLY_DEBUG 1481 mc->mc_timestamp = time_second; 1482#endif 1483 1484 s = splcam(); 1485 1486 /* 1487 * Do we have to use the hardware mailbox? 1488 */ 1489 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1490 /* 1491 * Check to see if the controller is ready for us. 1492 */ 1493 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1494 splx(s); 1495 return(EBUSY); 1496 } 1497 mc->mc_flags |= MLY_CMD_BUSY; 1498 1499 /* 1500 * It's ready, send the command. 1501 */ 1502 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1503 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1504 1505 } else { /* use memory-mailbox mode */ 1506 1507 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1508 1509 /* check to see if the next index is free yet */ 1510 if (pkt->mmbox.flag != 0) { 1511 splx(s); 1512 return(EBUSY); 1513 } 1514 mc->mc_flags |= MLY_CMD_BUSY; 1515 1516 /* copy in new command */ 1517 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1518 /* barrier to ensure completion of previous write before we write the flag */ 1519 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1520 BUS_SPACE_BARRIER_WRITE); 1521 /* copy flag last */ 1522 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1523 /* barrier to ensure completion of previous write before we notify the controller */ 1524 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1525 BUS_SPACE_BARRIER_WRITE); 1526 1527 /* signal controller, update index */ 1528 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1529 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1530 } 1531 1532 mly_enqueue_busy(mc); 1533 splx(s); 1534 return(0); 1535} 1536 1537/******************************************************************************** 1538 * Pick up command status from the controller, schedule a completion event 1539 */ 1540static void 1541mly_done(struct mly_softc *sc) 1542{ 1543 struct mly_command *mc; 1544 union mly_status_packet *sp; 1545 u_int16_t slot; 1546 int s, worked; 1547 1548 s = splcam(); 1549 worked = 0; 1550 1551 /* pick up hardware-mailbox commands */ 1552 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1553 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1554 if (slot < MLY_SLOT_MAX) { 1555 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1556 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1557 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1558 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1559 mly_remove_busy(mc); 1560 mc->mc_flags &= ~MLY_CMD_BUSY; 1561 mly_enqueue_complete(mc); 1562 worked = 1; 1563 } else { 1564 /* slot 0xffff may mean "extremely bogus command" */ 1565 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1566 } 1567 /* unconditionally acknowledge status */ 1568 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1569 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1570 } 1571 1572 /* pick up memory-mailbox commands */ 1573 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1574 for (;;) { 1575 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1576 1577 /* check for more status */ 1578 if (sp->mmbox.flag == 0) 1579 break; 1580 1581 /* get slot number */ 1582 slot = sp->status.command_id; 1583 if (slot < MLY_SLOT_MAX) { 1584 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1585 mc->mc_status = sp->status.status; 1586 mc->mc_sense = sp->status.sense_length; 1587 mc->mc_resid = sp->status.residue; 1588 mly_remove_busy(mc); 1589 mc->mc_flags &= ~MLY_CMD_BUSY; 1590 mly_enqueue_complete(mc); 1591 worked = 1; 1592 } else { 1593 /* slot 0xffff may mean "extremely bogus command" */ 1594 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1595 slot, sc->mly_mmbox_status_index); 1596 } 1597 1598 /* clear and move to next index */ 1599 sp->mmbox.flag = 0; 1600 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1601 } 1602 /* acknowledge that we have collected status value(s) */ 1603 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1604 } 1605 1606 splx(s); 1607 if (worked) { 1608 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1609 taskqueue_enqueue(taskqueue_swi_giant, &sc->mly_task_complete); 1610 else 1611 mly_complete(sc, 0); 1612 } 1613} 1614 1615/******************************************************************************** 1616 * Process completed commands 1617 */ 1618static void 1619mly_complete(void *context, int pending) 1620{ 1621 struct mly_softc *sc = (struct mly_softc *)context; 1622 struct mly_command *mc; 1623 void (* mc_complete)(struct mly_command *mc); 1624 1625 1626 debug_called(2); 1627 1628 /* 1629 * Spin pulling commands off the completed queue and processing them. 1630 */ 1631 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1632 1633 /* 1634 * Free controller resources, mark command complete. 1635 * 1636 * Note that as soon as we mark the command complete, it may be freed 1637 * out from under us, so we need to save the mc_complete field in 1638 * order to later avoid dereferencing mc. (We would not expect to 1639 * have a polling/sleeping consumer with mc_complete != NULL). 1640 */ 1641 mly_unmap_command(mc); 1642 mc_complete = mc->mc_complete; 1643 mc->mc_flags |= MLY_CMD_COMPLETE; 1644 1645 /* 1646 * Call completion handler or wake up sleeping consumer. 1647 */ 1648 if (mc_complete != NULL) { 1649 mc_complete(mc); 1650 } else { 1651 wakeup(mc); 1652 } 1653 } 1654 1655 /* 1656 * XXX if we are deferring commands due to controller-busy status, we should 1657 * retry submitting them here. 1658 */ 1659} 1660 1661/******************************************************************************** 1662 ******************************************************************************** 1663 Command Buffer Management 1664 ******************************************************************************** 1665 ********************************************************************************/ 1666 1667/******************************************************************************** 1668 * Allocate a command. 1669 */ 1670static int 1671mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1672{ 1673 struct mly_command *mc; 1674 1675 debug_called(3); 1676 1677 if ((mc = mly_dequeue_free(sc)) == NULL) 1678 return(ENOMEM); 1679 1680 *mcp = mc; 1681 return(0); 1682} 1683 1684/******************************************************************************** 1685 * Release a command back to the freelist. 1686 */ 1687static void 1688mly_release_command(struct mly_command *mc) 1689{ 1690 debug_called(3); 1691 1692 /* 1693 * Fill in parts of the command that may cause confusion if 1694 * a consumer doesn't when we are later allocated. 1695 */ 1696 mc->mc_data = NULL; 1697 mc->mc_flags = 0; 1698 mc->mc_complete = NULL; 1699 mc->mc_private = NULL; 1700 1701 /* 1702 * By default, we set up to overwrite the command packet with 1703 * sense information. 1704 */ 1705 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1706 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1707 1708 mly_enqueue_free(mc); 1709} 1710 1711/******************************************************************************** 1712 * Map helper for command allocation. 1713 */ 1714static void 1715mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1716{ 1717 struct mly_softc *sc = (struct mly_softc *)arg; 1718 1719 debug_called(1); 1720 1721 sc->mly_packetphys = segs[0].ds_addr; 1722} 1723 1724/******************************************************************************** 1725 * Allocate and initialise command and packet structures. 1726 * 1727 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1728 * allocation to that number. If we don't yet know how many commands the 1729 * controller supports, allocate a very small set (suitable for initialisation 1730 * purposes only). 1731 */ 1732static int 1733mly_alloc_commands(struct mly_softc *sc) 1734{ 1735 struct mly_command *mc; 1736 int i, ncmd; 1737 1738 if (sc->mly_controllerinfo == NULL) { 1739 ncmd = 4; 1740 } else { 1741 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1742 } 1743 1744 /* 1745 * Allocate enough space for all the command packets in one chunk and 1746 * map them permanently into controller-visible space. 1747 */ 1748 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1749 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1750 return(ENOMEM); 1751 } 1752 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1753 ncmd * sizeof(union mly_command_packet), 1754 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1755 return (ENOMEM); 1756 1757 for (i = 0; i < ncmd; i++) { 1758 mc = &sc->mly_command[i]; 1759 bzero(mc, sizeof(*mc)); 1760 mc->mc_sc = sc; 1761 mc->mc_slot = MLY_SLOT_START + i; 1762 mc->mc_packet = sc->mly_packet + i; 1763 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1764 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1765 mly_release_command(mc); 1766 } 1767 return(0); 1768} 1769 1770/******************************************************************************** 1771 * Free all the storage held by commands. 1772 * 1773 * Must be called with all commands on the free list. 1774 */ 1775static void 1776mly_release_commands(struct mly_softc *sc) 1777{ 1778 struct mly_command *mc; 1779 1780 /* throw away command buffer DMA maps */ 1781 while (mly_alloc_command(sc, &mc) == 0) 1782 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1783 1784 /* release the packet storage */ 1785 if (sc->mly_packet != NULL) { 1786 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1787 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1788 sc->mly_packet = NULL; 1789 } 1790} 1791 1792 1793/******************************************************************************** 1794 * Command-mapping helper function - populate this command's s/g table 1795 * with the s/g entries for its data. 1796 */ 1797static void 1798mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1799{ 1800 struct mly_command *mc = (struct mly_command *)arg; 1801 struct mly_softc *sc = mc->mc_sc; 1802 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1803 struct mly_sg_entry *sg; 1804 int i, tabofs; 1805 1806 debug_called(2); 1807 1808 /* can we use the transfer structure directly? */ 1809 if (nseg <= 2) { 1810 sg = &gen->transfer.direct.sg[0]; 1811 gen->command_control.extended_sg_table = 0; 1812 } else { 1813 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1814 sg = sc->mly_sg_table + tabofs; 1815 gen->transfer.indirect.entries[0] = nseg; 1816 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1817 gen->command_control.extended_sg_table = 1; 1818 } 1819 1820 /* copy the s/g table */ 1821 for (i = 0; i < nseg; i++) { 1822 sg[i].physaddr = segs[i].ds_addr; 1823 sg[i].length = segs[i].ds_len; 1824 } 1825 1826} 1827 1828#if 0 1829/******************************************************************************** 1830 * Command-mapping helper function - save the cdb's physical address. 1831 * 1832 * We don't support 'large' SCSI commands at this time, so this is unused. 1833 */ 1834static void 1835mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1836{ 1837 struct mly_command *mc = (struct mly_command *)arg; 1838 1839 debug_called(2); 1840 1841 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1842 if ((segs[0].ds_addr % PAGE_SIZE) > 1843 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1844 panic("cdb crosses page boundary"); 1845 1846 /* fix up fields in the command packet */ 1847 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1848} 1849#endif 1850 1851/******************************************************************************** 1852 * Map a command into controller-visible space 1853 */ 1854static void 1855mly_map_command(struct mly_command *mc) 1856{ 1857 struct mly_softc *sc = mc->mc_sc; 1858 1859 debug_called(2); 1860 1861 /* don't map more than once */ 1862 if (mc->mc_flags & MLY_CMD_MAPPED) 1863 return; 1864 1865 /* does the command have a data buffer? */ 1866 if (mc->mc_data != NULL) { 1867 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1868 mly_map_command_sg, mc, 0); 1869 1870 if (mc->mc_flags & MLY_CMD_DATAIN) 1871 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1872 if (mc->mc_flags & MLY_CMD_DATAOUT) 1873 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1874 } 1875 mc->mc_flags |= MLY_CMD_MAPPED; 1876} 1877 1878/******************************************************************************** 1879 * Unmap a command from controller-visible space 1880 */ 1881static void 1882mly_unmap_command(struct mly_command *mc) 1883{ 1884 struct mly_softc *sc = mc->mc_sc; 1885 1886 debug_called(2); 1887 1888 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1889 return; 1890 1891 /* does the command have a data buffer? */ 1892 if (mc->mc_data != NULL) { 1893 if (mc->mc_flags & MLY_CMD_DATAIN) 1894 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1895 if (mc->mc_flags & MLY_CMD_DATAOUT) 1896 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1897 1898 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1899 } 1900 mc->mc_flags &= ~MLY_CMD_MAPPED; 1901} 1902 1903 1904/******************************************************************************** 1905 ******************************************************************************** 1906 CAM interface 1907 ******************************************************************************** 1908 ********************************************************************************/ 1909 1910/******************************************************************************** 1911 * Attach the physical and virtual SCSI busses to CAM. 1912 * 1913 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1914 * than the highest physical bus. Physical busses are only registered if 1915 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1916 * 1917 * When we refer to a "bus", we are referring to the bus number registered with 1918 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1919 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1920 * interchangeably. 1921 */ 1922static int 1923mly_cam_attach(struct mly_softc *sc) 1924{ 1925 struct cam_devq *devq; 1926 int chn, i; 1927 1928 debug_called(1); 1929 1930 /* 1931 * Allocate a devq for all our channels combined. 1932 */ 1933 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1934 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1935 return(ENOMEM); 1936 } 1937 1938 /* 1939 * If physical channel registration has been requested, register these first. 1940 * Note that we enable tagged command queueing for physical channels. 1941 */ 1942 if (testenv("hw.mly.register_physical_channels")) { 1943 chn = 0; 1944 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1945 1946 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1947 device_get_unit(sc->mly_dev), 1948 &Giant, 1949 sc->mly_controllerinfo->maximum_parallel_commands, 1950 1, devq)) == NULL) { 1951 return(ENOMEM); 1952 } 1953 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1954 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1955 return(ENXIO); 1956 } 1957 debug(1, "registered physical channel %d", chn); 1958 } 1959 } 1960 1961 /* 1962 * Register our virtual channels, with bus numbers matching channel numbers. 1963 */ 1964 chn = sc->mly_controllerinfo->physical_channels_present; 1965 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1966 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1967 device_get_unit(sc->mly_dev), 1968 &Giant, 1969 sc->mly_controllerinfo->maximum_parallel_commands, 1970 0, devq)) == NULL) { 1971 return(ENOMEM); 1972 } 1973 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1974 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1975 return(ENXIO); 1976 } 1977 debug(1, "registered virtual channel %d", chn); 1978 } 1979 1980 /* 1981 * This is the total number of channels that (might have been) registered with 1982 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1983 */ 1984 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1985 sc->mly_controllerinfo->virtual_channels_present; 1986 1987 return(0); 1988} 1989 1990/******************************************************************************** 1991 * Detach from CAM 1992 */ 1993static void 1994mly_cam_detach(struct mly_softc *sc) 1995{ 1996 int i; 1997 1998 debug_called(1); 1999 2000 for (i = 0; i < sc->mly_cam_channels; i++) { 2001 if (sc->mly_cam_sim[i] != NULL) { 2002 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 2003 cam_sim_free(sc->mly_cam_sim[i], 0); 2004 } 2005 } 2006 if (sc->mly_cam_devq != NULL) 2007 cam_simq_free(sc->mly_cam_devq); 2008} 2009 2010/************************************************************************ 2011 * Rescan a device. 2012 */ 2013static void 2014mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2015{ 2016 union ccb *ccb; 2017 2018 debug_called(1); 2019 2020 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 2021 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2022 return; 2023 } 2024 2025 if (xpt_create_path(&sc->mly_cam_path, xpt_periph, 2026 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2027 mly_printf(sc, "rescan failed (can't create path)\n"); 2028 free(ccb, M_TEMP); 2029 return; 2030 } 2031 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/); 2032 ccb->ccb_h.func_code = XPT_SCAN_LUN; 2033 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback; 2034 ccb->crcn.flags = CAM_FLAG_NONE; 2035 debug(1, "rescan target %d:%d", bus, target); 2036 xpt_action(ccb); 2037} 2038 2039static void 2040mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2041{ 2042 free(ccb, M_TEMP); 2043} 2044 2045/******************************************************************************** 2046 * Handle an action requested by CAM 2047 */ 2048static void 2049mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2050{ 2051 struct mly_softc *sc = cam_sim_softc(sim); 2052 2053 debug_called(2); 2054 2055 switch (ccb->ccb_h.func_code) { 2056 2057 /* perform SCSI I/O */ 2058 case XPT_SCSI_IO: 2059 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2060 return; 2061 break; 2062 2063 /* perform geometry calculations */ 2064 case XPT_CALC_GEOMETRY: 2065 { 2066 struct ccb_calc_geometry *ccg = &ccb->ccg; 2067 u_int32_t secs_per_cylinder; 2068 2069 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2070 2071 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2072 ccg->heads = 255; 2073 ccg->secs_per_track = 63; 2074 } else { /* MLY_BIOSGEOM_2G */ 2075 ccg->heads = 128; 2076 ccg->secs_per_track = 32; 2077 } 2078 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2079 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2080 ccb->ccb_h.status = CAM_REQ_CMP; 2081 break; 2082 } 2083 2084 /* handle path attribute inquiry */ 2085 case XPT_PATH_INQ: 2086 { 2087 struct ccb_pathinq *cpi = &ccb->cpi; 2088 2089 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2090 2091 cpi->version_num = 1; 2092 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2093 cpi->target_sprt = 0; 2094 cpi->hba_misc = 0; 2095 cpi->max_target = MLY_MAX_TARGETS - 1; 2096 cpi->max_lun = MLY_MAX_LUNS - 1; 2097 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2098 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2099 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 2100 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2101 cpi->unit_number = cam_sim_unit(sim); 2102 cpi->bus_id = cam_sim_bus(sim); 2103 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2104 cpi->transport = XPORT_SPI; 2105 cpi->transport_version = 2; 2106 cpi->protocol = PROTO_SCSI; 2107 cpi->protocol_version = SCSI_REV_2; 2108 ccb->ccb_h.status = CAM_REQ_CMP; 2109 break; 2110 } 2111 2112 case XPT_GET_TRAN_SETTINGS: 2113 { 2114 struct ccb_trans_settings *cts = &ccb->cts; 2115 int bus, target; 2116 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2117 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2118 2119 cts->protocol = PROTO_SCSI; 2120 cts->protocol_version = SCSI_REV_2; 2121 cts->transport = XPORT_SPI; 2122 cts->transport_version = 2; 2123 2124 scsi->flags = 0; 2125 scsi->valid = 0; 2126 spi->flags = 0; 2127 spi->valid = 0; 2128 2129 bus = cam_sim_bus(sim); 2130 target = cts->ccb_h.target_id; 2131 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2132 /* logical device? */ 2133 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2134 /* nothing special for these */ 2135 /* physical device? */ 2136 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2137 /* allow CAM to try tagged transactions */ 2138 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2139 scsi->valid |= CTS_SCSI_VALID_TQ; 2140 2141 /* convert speed (MHz) to usec */ 2142 if (sc->mly_btl[bus][target].mb_speed == 0) { 2143 spi->sync_period = 1000000 / 5; 2144 } else { 2145 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2146 } 2147 2148 /* convert bus width to CAM internal encoding */ 2149 switch (sc->mly_btl[bus][target].mb_width) { 2150 case 32: 2151 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2152 break; 2153 case 16: 2154 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2155 break; 2156 case 8: 2157 default: 2158 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2159 break; 2160 } 2161 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2162 2163 /* not a device, bail out */ 2164 } else { 2165 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2166 break; 2167 } 2168 2169 /* disconnect always OK */ 2170 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2171 spi->valid |= CTS_SPI_VALID_DISC; 2172 2173 cts->ccb_h.status = CAM_REQ_CMP; 2174 break; 2175 } 2176 2177 default: /* we can't do this */ 2178 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2179 ccb->ccb_h.status = CAM_REQ_INVALID; 2180 break; 2181 } 2182 2183 xpt_done(ccb); 2184} 2185 2186/******************************************************************************** 2187 * Handle an I/O operation requested by CAM 2188 */ 2189static int 2190mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2191{ 2192 struct mly_softc *sc = cam_sim_softc(sim); 2193 struct mly_command *mc; 2194 struct mly_command_scsi_small *ss; 2195 int bus, target; 2196 int error; 2197 int s; 2198 2199 bus = cam_sim_bus(sim); 2200 target = csio->ccb_h.target_id; 2201 2202 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2203 2204 /* validate bus number */ 2205 if (!MLY_BUS_IS_VALID(sc, bus)) { 2206 debug(0, " invalid bus %d", bus); 2207 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2208 } 2209 2210 /* check for I/O attempt to a protected device */ 2211 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2212 debug(2, " device protected"); 2213 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2214 } 2215 2216 /* check for I/O attempt to nonexistent device */ 2217 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2218 debug(2, " device %d:%d does not exist", bus, target); 2219 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2220 } 2221 2222 /* XXX increase if/when we support large SCSI commands */ 2223 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2224 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2225 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2226 } 2227 2228 /* check that the CDB pointer is not to a physical address */ 2229 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2230 debug(0, " CDB pointer is to physical address"); 2231 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2232 } 2233 2234 /* if there is data transfer, it must be to/from a virtual address */ 2235 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2236 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2237 debug(0, " data pointer is to physical address"); 2238 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2239 } 2240 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2241 debug(0, " data has premature s/g setup"); 2242 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2243 } 2244 } 2245 2246 /* abandon aborted ccbs or those that have failed validation */ 2247 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2248 debug(2, "abandoning CCB due to abort/validation failure"); 2249 return(EINVAL); 2250 } 2251 2252 /* 2253 * Get a command, or push the ccb back to CAM and freeze the queue. 2254 */ 2255 if ((error = mly_alloc_command(sc, &mc))) { 2256 s = splcam(); 2257 xpt_freeze_simq(sim, 1); 2258 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2259 sc->mly_qfrzn_cnt++; 2260 splx(s); 2261 return(error); 2262 } 2263 2264 /* build the command */ 2265 mc->mc_data = csio->data_ptr; 2266 mc->mc_length = csio->dxfer_len; 2267 mc->mc_complete = mly_cam_complete; 2268 mc->mc_private = csio; 2269 2270 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2271 csio->ccb_h.sim_priv.entries[0].field = bus; 2272 2273 /* build the packet for the controller */ 2274 ss = &mc->mc_packet->scsi_small; 2275 ss->opcode = MDACMD_SCSI; 2276 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2277 ss->command_control.disable_disconnect = 1; 2278 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2279 ss->command_control.data_direction = MLY_CCB_WRITE; 2280 ss->data_size = csio->dxfer_len; 2281 ss->addr.phys.lun = csio->ccb_h.target_lun; 2282 ss->addr.phys.target = csio->ccb_h.target_id; 2283 ss->addr.phys.channel = bus; 2284 if (csio->ccb_h.timeout < (60 * 1000)) { 2285 ss->timeout.value = csio->ccb_h.timeout / 1000; 2286 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2287 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2288 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2289 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2290 } else { 2291 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2292 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2293 } 2294 ss->maximum_sense_size = csio->sense_len; 2295 ss->cdb_length = csio->cdb_len; 2296 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2297 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2298 } else { 2299 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2300 } 2301 2302 /* give the command to the controller */ 2303 if ((error = mly_start(mc))) { 2304 s = splcam(); 2305 xpt_freeze_simq(sim, 1); 2306 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2307 sc->mly_qfrzn_cnt++; 2308 splx(s); 2309 return(error); 2310 } 2311 2312 return(0); 2313} 2314 2315/******************************************************************************** 2316 * Check for possibly-completed commands. 2317 */ 2318static void 2319mly_cam_poll(struct cam_sim *sim) 2320{ 2321 struct mly_softc *sc = cam_sim_softc(sim); 2322 2323 debug_called(2); 2324 2325 mly_done(sc); 2326} 2327 2328/******************************************************************************** 2329 * Handle completion of a command - pass results back through the CCB 2330 */ 2331static void 2332mly_cam_complete(struct mly_command *mc) 2333{ 2334 struct mly_softc *sc = mc->mc_sc; 2335 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2336 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2337 struct mly_btl *btl; 2338 u_int8_t cmd; 2339 int bus, target; 2340 int s; 2341 2342 debug_called(2); 2343 2344 csio->scsi_status = mc->mc_status; 2345 switch(mc->mc_status) { 2346 case SCSI_STATUS_OK: 2347 /* 2348 * In order to report logical device type and status, we overwrite 2349 * the result of the INQUIRY command to logical devices. 2350 */ 2351 bus = csio->ccb_h.sim_priv.entries[0].field; 2352 target = csio->ccb_h.target_id; 2353 /* XXX validate bus/target? */ 2354 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2355 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2356 cmd = *csio->cdb_io.cdb_ptr; 2357 } else { 2358 cmd = csio->cdb_io.cdb_bytes[0]; 2359 } 2360 if (cmd == INQUIRY) { 2361 btl = &sc->mly_btl[bus][target]; 2362 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2363 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2364 padstr(inq->revision, "", 4); 2365 } 2366 } 2367 2368 debug(2, "SCSI_STATUS_OK"); 2369 csio->ccb_h.status = CAM_REQ_CMP; 2370 break; 2371 2372 case SCSI_STATUS_CHECK_COND: 2373 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2374 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2375 bzero(&csio->sense_data, SSD_FULL_SIZE); 2376 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2377 csio->sense_len = mc->mc_sense; 2378 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2379 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2380 break; 2381 2382 case SCSI_STATUS_BUSY: 2383 debug(1, "SCSI_STATUS_BUSY"); 2384 csio->ccb_h.status = CAM_SCSI_BUSY; 2385 break; 2386 2387 default: 2388 debug(1, "unknown status 0x%x", csio->scsi_status); 2389 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2390 break; 2391 } 2392 2393 s = splcam(); 2394 if (sc->mly_qfrzn_cnt) { 2395 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2396 sc->mly_qfrzn_cnt--; 2397 } 2398 splx(s); 2399 2400 xpt_done((union ccb *)csio); 2401 mly_release_command(mc); 2402} 2403 2404/******************************************************************************** 2405 * Find a peripheral attahed at (bus),(target) 2406 */ 2407static struct cam_periph * 2408mly_find_periph(struct mly_softc *sc, int bus, int target) 2409{ 2410 struct cam_periph *periph; 2411 struct cam_path *path; 2412 int status; 2413 2414 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2415 if (status == CAM_REQ_CMP) { 2416 periph = cam_periph_find(path, NULL); 2417 xpt_free_path(path); 2418 } else { 2419 periph = NULL; 2420 } 2421 return(periph); 2422} 2423 2424/******************************************************************************** 2425 * Name the device at (bus)(target) 2426 */ 2427static int 2428mly_name_device(struct mly_softc *sc, int bus, int target) 2429{ 2430 struct cam_periph *periph; 2431 2432 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2433 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2434 return(0); 2435 } 2436 sc->mly_btl[bus][target].mb_name[0] = 0; 2437 return(ENOENT); 2438} 2439 2440/******************************************************************************** 2441 ******************************************************************************** 2442 Hardware Control 2443 ******************************************************************************** 2444 ********************************************************************************/ 2445 2446/******************************************************************************** 2447 * Handshake with the firmware while the card is being initialised. 2448 */ 2449static int 2450mly_fwhandshake(struct mly_softc *sc) 2451{ 2452 u_int8_t error, param0, param1; 2453 int spinup = 0; 2454 2455 debug_called(1); 2456 2457 /* set HM_STSACK and let the firmware initialise */ 2458 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2459 DELAY(1000); /* too short? */ 2460 2461 /* if HM_STSACK is still true, the controller is initialising */ 2462 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2463 return(0); 2464 mly_printf(sc, "controller initialisation started\n"); 2465 2466 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2467 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2468 /* check for a message */ 2469 if (MLY_ERROR_VALID(sc)) { 2470 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2471 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2472 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2473 2474 switch(error) { 2475 case MLY_MSG_SPINUP: 2476 if (!spinup) { 2477 mly_printf(sc, "drive spinup in progress\n"); 2478 spinup = 1; /* only print this once (should print drive being spun?) */ 2479 } 2480 break; 2481 case MLY_MSG_RACE_RECOVERY_FAIL: 2482 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2483 break; 2484 case MLY_MSG_RACE_IN_PROGRESS: 2485 mly_printf(sc, "mirror race recovery in progress\n"); 2486 break; 2487 case MLY_MSG_RACE_ON_CRITICAL: 2488 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2489 break; 2490 case MLY_MSG_PARITY_ERROR: 2491 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2492 return(ENXIO); 2493 default: 2494 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2495 } 2496 } 2497 } 2498 return(0); 2499} 2500 2501/******************************************************************************** 2502 ******************************************************************************** 2503 Debugging and Diagnostics 2504 ******************************************************************************** 2505 ********************************************************************************/ 2506 2507/******************************************************************************** 2508 * Print some information about the controller. 2509 */ 2510static void 2511mly_describe_controller(struct mly_softc *sc) 2512{ 2513 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2514 2515 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2516 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2517 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2518 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2519 mi->memory_size); 2520 2521 if (bootverbose) { 2522 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2523 mly_describe_code(mly_table_oemname, mi->oem_information), 2524 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2525 mi->interface_speed, mi->interface_width, mi->interface_name); 2526 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2527 mi->memory_size, mi->memory_speed, mi->memory_width, 2528 mly_describe_code(mly_table_memorytype, mi->memory_type), 2529 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2530 mi->cache_size); 2531 mly_printf(sc, "CPU: %s @ %dMHz\n", 2532 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2533 if (mi->l2cache_size != 0) 2534 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2535 if (mi->exmemory_size != 0) 2536 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2537 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2538 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2539 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2540 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2541 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2542 mi->maximum_block_count, mi->maximum_sg_entries); 2543 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2544 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2545 mly_printf(sc, "physical devices present %d\n", 2546 mi->physical_devices_present); 2547 mly_printf(sc, "physical disks present/offline %d/%d\n", 2548 mi->physical_disks_present, mi->physical_disks_offline); 2549 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2550 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2551 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2552 mi->virtual_channels_possible); 2553 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2554 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2555 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2556 } 2557} 2558 2559#ifdef MLY_DEBUG 2560/******************************************************************************** 2561 * Print some controller state 2562 */ 2563static void 2564mly_printstate(struct mly_softc *sc) 2565{ 2566 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2567 MLY_GET_REG(sc, sc->mly_idbr), 2568 MLY_GET_REG(sc, sc->mly_odbr), 2569 MLY_GET_REG(sc, sc->mly_error_status), 2570 sc->mly_idbr, 2571 sc->mly_odbr, 2572 sc->mly_error_status); 2573 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2574 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2575 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2576 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2577 MLY_GET_REG(sc, sc->mly_command_mailbox), 2578 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2579 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2580 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2581 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2582 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2583 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2584 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2585 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2586 MLY_GET_REG(sc, sc->mly_status_mailbox), 2587 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2588 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2589 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2590 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2591 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2592 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2593 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2594 mly_printf(sc, " %04x %08x\n", 2595 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2596 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2597} 2598 2599struct mly_softc *mly_softc0 = NULL; 2600void 2601mly_printstate0(void) 2602{ 2603 if (mly_softc0 != NULL) 2604 mly_printstate(mly_softc0); 2605} 2606 2607/******************************************************************************** 2608 * Print a command 2609 */ 2610static void 2611mly_print_command(struct mly_command *mc) 2612{ 2613 struct mly_softc *sc = mc->mc_sc; 2614 2615 mly_printf(sc, "COMMAND @ %p\n", mc); 2616 mly_printf(sc, " slot %d\n", mc->mc_slot); 2617 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2618 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2619 mly_printf(sc, " resid %d\n", mc->mc_resid); 2620 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2621 if (mc->mc_packet != NULL) 2622 mly_print_packet(mc); 2623 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2624 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2625 mly_printf(sc, " complete %p\n", mc->mc_complete); 2626 mly_printf(sc, " private %p\n", mc->mc_private); 2627} 2628 2629/******************************************************************************** 2630 * Print a command packet 2631 */ 2632static void 2633mly_print_packet(struct mly_command *mc) 2634{ 2635 struct mly_softc *sc = mc->mc_sc; 2636 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2637 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2638 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2639 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2640 int transfer; 2641 2642 mly_printf(sc, " command_id %d\n", ge->command_id); 2643 mly_printf(sc, " opcode %d\n", ge->opcode); 2644 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2645 ge->command_control.force_unit_access, 2646 ge->command_control.disable_page_out, 2647 ge->command_control.extended_sg_table, 2648 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2649 ge->command_control.no_auto_sense, 2650 ge->command_control.disable_disconnect); 2651 mly_printf(sc, " data_size %d\n", ge->data_size); 2652 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2653 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2654 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2655 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2656 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2657 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2658 mly_printf(sc, " timeout %d %s\n", 2659 ge->timeout.value, 2660 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2661 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2662 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2663 switch(ge->opcode) { 2664 case MDACMD_SCSIPT: 2665 case MDACMD_SCSI: 2666 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2667 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2668 transfer = 1; 2669 break; 2670 case MDACMD_SCSILC: 2671 case MDACMD_SCSILCPT: 2672 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2673 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2674 transfer = 1; 2675 break; 2676 case MDACMD_IOCTL: 2677 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2678 switch(io->sub_ioctl) { 2679 case MDACIOCTL_SETMEMORYMAILBOX: 2680 mly_printf(sc, " health_buffer_size %d\n", 2681 io->param.setmemorymailbox.health_buffer_size); 2682 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2683 io->param.setmemorymailbox.health_buffer_physaddr); 2684 mly_printf(sc, " command_mailbox 0x%llx\n", 2685 io->param.setmemorymailbox.command_mailbox_physaddr); 2686 mly_printf(sc, " status_mailbox 0x%llx\n", 2687 io->param.setmemorymailbox.status_mailbox_physaddr); 2688 transfer = 0; 2689 break; 2690 2691 case MDACIOCTL_SETREALTIMECLOCK: 2692 case MDACIOCTL_GETHEALTHSTATUS: 2693 case MDACIOCTL_GETCONTROLLERINFO: 2694 case MDACIOCTL_GETLOGDEVINFOVALID: 2695 case MDACIOCTL_GETPHYSDEVINFOVALID: 2696 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2697 case MDACIOCTL_GETLOGDEVSTATISTICS: 2698 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2699 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2700 case MDACIOCTL_CREATENEWCONF: 2701 case MDACIOCTL_ADDNEWCONF: 2702 case MDACIOCTL_GETDEVCONFINFO: 2703 case MDACIOCTL_GETFREESPACELIST: 2704 case MDACIOCTL_MORE: 2705 case MDACIOCTL_SETPHYSDEVPARAMETER: 2706 case MDACIOCTL_GETPHYSDEVPARAMETER: 2707 case MDACIOCTL_GETLOGDEVPARAMETER: 2708 case MDACIOCTL_SETLOGDEVPARAMETER: 2709 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2710 transfer = 1; 2711 break; 2712 2713 case MDACIOCTL_GETEVENT: 2714 mly_printf(sc, " event %d\n", 2715 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2716 transfer = 1; 2717 break; 2718 2719 case MDACIOCTL_SETRAIDDEVSTATE: 2720 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2721 transfer = 0; 2722 break; 2723 2724 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2725 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2726 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2727 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2728 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2729 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2730 transfer = 0; 2731 break; 2732 2733 case MDACIOCTL_GETGROUPCONFINFO: 2734 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2735 transfer = 1; 2736 break; 2737 2738 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2739 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2740 case MDACIOCTL_STARTDISOCVERY: 2741 case MDACIOCTL_INITPHYSDEVSTART: 2742 case MDACIOCTL_INITPHYSDEVSTOP: 2743 case MDACIOCTL_INITRAIDDEVSTART: 2744 case MDACIOCTL_INITRAIDDEVSTOP: 2745 case MDACIOCTL_REBUILDRAIDDEVSTART: 2746 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2747 case MDACIOCTL_MAKECONSISTENTDATASTART: 2748 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2749 case MDACIOCTL_CONSISTENCYCHECKSTART: 2750 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2751 case MDACIOCTL_RESETDEVICE: 2752 case MDACIOCTL_FLUSHDEVICEDATA: 2753 case MDACIOCTL_PAUSEDEVICE: 2754 case MDACIOCTL_UNPAUSEDEVICE: 2755 case MDACIOCTL_LOCATEDEVICE: 2756 case MDACIOCTL_SETMASTERSLAVEMODE: 2757 case MDACIOCTL_DELETERAIDDEV: 2758 case MDACIOCTL_REPLACEINTERNALDEV: 2759 case MDACIOCTL_CLEARCONF: 2760 case MDACIOCTL_GETCONTROLLERPARAMETER: 2761 case MDACIOCTL_SETCONTRLLERPARAMETER: 2762 case MDACIOCTL_CLEARCONFSUSPMODE: 2763 case MDACIOCTL_STOREIMAGE: 2764 case MDACIOCTL_READIMAGE: 2765 case MDACIOCTL_FLASHIMAGES: 2766 case MDACIOCTL_RENAMERAIDDEV: 2767 default: /* no idea what to print */ 2768 transfer = 0; 2769 break; 2770 } 2771 break; 2772 2773 case MDACMD_IOCTLCHECK: 2774 case MDACMD_MEMCOPY: 2775 default: 2776 transfer = 0; 2777 break; /* print nothing */ 2778 } 2779 if (transfer) { 2780 if (ge->command_control.extended_sg_table) { 2781 mly_printf(sc, " sg table 0x%llx/%d\n", 2782 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2783 } else { 2784 mly_printf(sc, " 0000 0x%llx/%lld\n", 2785 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2786 mly_printf(sc, " 0001 0x%llx/%lld\n", 2787 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2788 } 2789 } 2790} 2791 2792/******************************************************************************** 2793 * Panic in a slightly informative fashion 2794 */ 2795static void 2796mly_panic(struct mly_softc *sc, char *reason) 2797{ 2798 mly_printstate(sc); 2799 panic(reason); 2800} 2801 2802/******************************************************************************** 2803 * Print queue statistics, callable from DDB. 2804 */ 2805void 2806mly_print_controller(int controller) 2807{ 2808 struct mly_softc *sc; 2809 2810 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2811 printf("mly: controller %d invalid\n", controller); 2812 } else { 2813 device_printf(sc->mly_dev, "queue curr max\n"); 2814 device_printf(sc->mly_dev, "free %04d/%04d\n", 2815 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2816 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2817 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2818 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2819 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2820 } 2821} 2822#endif 2823 2824 2825/******************************************************************************** 2826 ******************************************************************************** 2827 Control device interface 2828 ******************************************************************************** 2829 ********************************************************************************/ 2830 2831/******************************************************************************** 2832 * Accept an open operation on the control device. 2833 */ 2834static int 2835mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td) 2836{ 2837 struct mly_softc *sc = dev->si_drv1; 2838 2839 sc->mly_state |= MLY_STATE_OPEN; 2840 return(0); 2841} 2842 2843/******************************************************************************** 2844 * Accept the last close on the control device. 2845 */ 2846static int 2847mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td) 2848{ 2849 struct mly_softc *sc = dev->si_drv1; 2850 2851 sc->mly_state &= ~MLY_STATE_OPEN; 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, s; 2890 2891 /* allocate a command */ 2892 if (mly_alloc_command(sc, &mc)) { 2893 error = ENOMEM; 2894 goto out; /* XXX Linux version will wait for a command */ 2895 } 2896 2897 /* handle data size/direction */ 2898 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2899 if (mc->mc_length > 0) { 2900 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 2901 error = ENOMEM; 2902 goto out; 2903 } 2904 } 2905 if (uc->DataTransferLength > 0) { 2906 mc->mc_flags |= MLY_CMD_DATAIN; 2907 bzero(mc->mc_data, mc->mc_length); 2908 } 2909 if (uc->DataTransferLength < 0) { 2910 mc->mc_flags |= MLY_CMD_DATAOUT; 2911 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2912 goto out; 2913 } 2914 2915 /* copy the controller command */ 2916 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2917 2918 /* clear command completion handler so that we get woken up */ 2919 mc->mc_complete = NULL; 2920 2921 /* execute the command */ 2922 if ((error = mly_start(mc)) != 0) 2923 goto out; 2924 s = splcam(); 2925 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2926 tsleep(mc, PRIBIO, "mlyioctl", 0); 2927 splx(s); 2928 2929 /* return the data to userspace */ 2930 if (uc->DataTransferLength > 0) 2931 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2932 goto out; 2933 2934 /* return the sense buffer to userspace */ 2935 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2936 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2937 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2938 goto out; 2939 } 2940 2941 /* return command results to userspace (caller will copy out) */ 2942 uc->DataTransferLength = mc->mc_resid; 2943 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2944 uc->CommandStatus = mc->mc_status; 2945 error = 0; 2946 2947 out: 2948 if (mc->mc_data != NULL) 2949 free(mc->mc_data, M_DEVBUF); 2950 if (mc != NULL) 2951 mly_release_command(mc); 2952 return(error); 2953} 2954 2955/******************************************************************************** 2956 * Return health status to userspace. If the health change index in the user 2957 * structure does not match that currently exported by the controller, we 2958 * return the current status immediately. Otherwise, we block until either 2959 * interrupted or new status is delivered. 2960 */ 2961static int 2962mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2963{ 2964 struct mly_health_status mh; 2965 int error, s; 2966 2967 /* fetch the current health status from userspace */ 2968 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2969 return(error); 2970 2971 /* spin waiting for a status update */ 2972 s = splcam(); 2973 error = EWOULDBLOCK; 2974 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2975 error = tsleep(&sc->mly_event_change, PRIBIO | PCATCH, "mlyhealth", 0); 2976 splx(s); 2977 2978 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2979 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2980 sizeof(uh->HealthStatusBuffer)); 2981 return(error); 2982} 2983 2984#ifdef MLY_DEBUG 2985static int 2986mly_timeout(struct mly_softc *sc) 2987{ 2988 struct mly_command *mc; 2989 int deadline; 2990 2991 deadline = time_second - MLY_CMD_TIMEOUT; 2992 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2993 if ((mc->mc_timestamp < deadline)) { 2994 device_printf(sc->mly_dev, 2995 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2996 (int)(time_second - mc->mc_timestamp)); 2997 } 2998 } 2999 3000 timeout((timeout_t *)mly_timeout, sc, MLY_CMD_TIMEOUT * hz); 3001 3002 return (0); 3003} 3004#endif 3005