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