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 62 static int mly_probe(device_t dev); 63 static int mly_attach(device_t dev); 64 static int mly_pci_attach(struct mly_softc *sc); 65 static int mly_detach(device_t dev); 66 static int mly_shutdown(device_t dev); 67 static void mly_intr(void *arg); 68 69 static int mly_sg_map(struct mly_softc *sc); 70 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 71 static int mly_mmbox_map(struct mly_softc *sc); 72 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 73 static void mly_free(struct mly_softc *sc); 74 75 static int mly_get_controllerinfo(struct mly_softc *sc); 76 static void mly_scan_devices(struct mly_softc *sc); 77 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 78 static void mly_complete_rescan(struct mly_command *mc); 79 static int mly_get_eventstatus(struct mly_softc *sc); 80 static int mly_enable_mmbox(struct mly_softc *sc); 81 static int mly_flush(struct mly_softc *sc); 82 static 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); 84 static void mly_check_event(struct mly_softc *sc); 85 static void mly_fetch_event(struct mly_softc *sc); 86 static void mly_complete_event(struct mly_command *mc); 87 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 88 static void mly_periodic(void *data); 89 90 static int mly_immediate_command(struct mly_command *mc); 91 static int mly_start(struct mly_command *mc); 92 static void mly_done(struct mly_softc *sc); 93 static void mly_complete(struct mly_softc *sc); 94 static void mly_complete_handler(void *context, int pending); 95 96 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 97 static void mly_release_command(struct mly_command *mc); 98 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 99 static int mly_alloc_commands(struct mly_softc *sc); 100 static void mly_release_commands(struct mly_softc *sc); 101 static void mly_map_command(struct mly_command *mc); 102 static void mly_unmap_command(struct mly_command *mc); 103 104 static int mly_cam_attach(struct mly_softc *sc); 105 static void mly_cam_detach(struct mly_softc *sc); 106 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 107 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 108 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 109 static void mly_cam_poll(struct cam_sim *sim); 110 static void mly_cam_complete(struct mly_command *mc); 111 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 112 static int mly_name_device(struct mly_softc *sc, int bus, int target); 113 114 static int mly_fwhandshake(struct mly_softc *sc); 115 116 static void mly_describe_controller(struct mly_softc *sc); 117 #ifdef MLY_DEBUG 118 static void mly_printstate(struct mly_softc *sc); 119 static void mly_print_command(struct mly_command *mc); 120 static void mly_print_packet(struct mly_command *mc); 121 static void mly_panic(struct mly_softc *sc, char *reason); 122 static void mly_timeout(void *arg); 123 #endif 124 void mly_print_controller(int controller); 125 126 127 static d_open_t mly_user_open; 128 static d_close_t mly_user_close; 129 static d_ioctl_t mly_user_ioctl; 130 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 131 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 132 133 #define MLY_CMD_TIMEOUT 20 134 135 static 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 }; 143 144 static driver_t mly_pci_driver = { 145 "mly", 146 mly_methods, 147 sizeof(struct mly_softc) 148 }; 149 150 static devclass_t mly_devclass; 151 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 152 MODULE_DEPEND(mly, pci, 1, 1, 1); 153 MODULE_DEPEND(mly, cam, 1, 1, 1); 154 155 static 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 ********************************************************************************/ 168 169 static 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 */ 189 static int 190 mly_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 */ 212 static int 213 mly_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 */ 345 static int 346 mly_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; 492 493 fail: 494 return(error); 495 } 496 497 /******************************************************************************** 498 * Shut the controller down and detach all our resources. 499 */ 500 static int 501 mly_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 */ 521 static int 522 mly_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 */ 554 static void 555 mly_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 */ 575 static int 576 mly_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 */ 622 static void 623 mly_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 */ 636 static int 637 mly_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 */ 677 static void 678 mly_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 */ 692 static void 693 mly_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 */ 766 static int 767 mly_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 */ 808 static void 809 mly_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 */ 838 static void 839 mly_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 */ 898 static void 899 mly_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 */ 997 static int 998 mly_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 */ 1032 static int 1033 mly_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 */ 1076 static int 1077 mly_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 */ 1109 static int 1110 mly_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 1171 out: 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 */ 1184 static void 1185 mly_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 */ 1213 static void 1214 mly_fetch_event(struct mly_softc *sc) 1215 { 1216 struct mly_command *mc; 1217 struct mly_command_ioctl *mci; 1218 int s; 1219 u_int32_t event; 1220 1221 debug_called(1); 1222 1223 /* get a command */ 1224 if (mly_alloc_command(sc, &mc)) 1225 return; 1226 1227 /* set up the data buffer */ 1228 if ((mc->mc_data = malloc(sizeof(struct mly_event), M_DEVBUF, M_NOWAIT | M_ZERO)) == NULL) { 1229 mly_release_command(mc); 1230 return; 1231 } 1232 mc->mc_length = sizeof(struct mly_event); 1233 mc->mc_flags |= MLY_CMD_DATAIN; 1234 mc->mc_complete = mly_complete_event; 1235 1236 /* 1237 * Get an event number to fetch. It's possible that we've raced with another 1238 * context for the last event, in which case there will be no more events. 1239 */ 1240 s = splcam(); 1241 if (sc->mly_event_counter == sc->mly_event_waiting) { 1242 mly_release_command(mc); 1243 splx(s); 1244 return; 1245 } 1246 event = sc->mly_event_counter++; 1247 splx(s); 1248 1249 /* 1250 * Build the ioctl. 1251 * 1252 * At this point we are committed to sending this request, as it 1253 * will be the only one constructed for this particular event number. 1254 */ 1255 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1256 mci->opcode = MDACMD_IOCTL; 1257 mci->data_size = sizeof(struct mly_event); 1258 mci->addr.phys.lun = (event >> 16) & 0xff; 1259 mci->addr.phys.target = (event >> 24) & 0xff; 1260 mci->addr.phys.channel = 0; 1261 mci->addr.phys.controller = 0; 1262 mci->timeout.value = 30; 1263 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1264 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1265 mci->param.getevent.sequence_number_low = event & 0xffff; 1266 1267 debug(1, "fetch event %u", event); 1268 1269 /* 1270 * Submit the command. 1271 * 1272 * Note that failure of mly_start() will result in this event never being 1273 * fetched. 1274 */ 1275 if (mly_start(mc) != 0) { 1276 mly_printf(sc, "couldn't fetch event %u\n", event); 1277 mly_release_command(mc); 1278 } 1279 } 1280 1281 /******************************************************************************** 1282 * Handle the completion of an event poll. 1283 */ 1284 static void 1285 mly_complete_event(struct mly_command *mc) 1286 { 1287 struct mly_softc *sc = mc->mc_sc; 1288 struct mly_event *me = (struct mly_event *)mc->mc_data; 1289 1290 debug_called(1); 1291 1292 /* 1293 * If the event was successfully fetched, process it. 1294 */ 1295 if (mc->mc_status == SCSI_STATUS_OK) { 1296 mly_process_event(sc, me); 1297 free(me, M_DEVBUF); 1298 } 1299 mly_release_command(mc); 1300 1301 /* 1302 * Check for another event. 1303 */ 1304 mly_check_event(sc); 1305 } 1306 1307 /******************************************************************************** 1308 * Process a controller event. 1309 */ 1310 static void 1311 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1312 { 1313 struct scsi_sense_data_fixed *ssd; 1314 char *fp, *tp; 1315 int bus, target, event, class, action; 1316 1317 ssd = (struct scsi_sense_data_fixed *)&me->sense[0]; 1318 1319 /* 1320 * Errors can be reported using vendor-unique sense data. In this case, the 1321 * event code will be 0x1c (Request sense data present), the sense key will 1322 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1323 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1324 * and low seven bits of the ASC (low seven bits of the high byte). 1325 */ 1326 if ((me->code == 0x1c) && 1327 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1328 (ssd->add_sense_code & 0x80)) { 1329 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1330 } else { 1331 event = me->code; 1332 } 1333 1334 /* look up event, get codes */ 1335 fp = mly_describe_code(mly_table_event, event); 1336 1337 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1338 1339 /* quiet event? */ 1340 class = fp[0]; 1341 if (isupper(class) && bootverbose) 1342 class = tolower(class); 1343 1344 /* get action code, text string */ 1345 action = fp[1]; 1346 tp = &fp[2]; 1347 1348 /* 1349 * Print some information about the event. 1350 * 1351 * This code uses a table derived from the corresponding portion of the Linux 1352 * driver, and thus the parser is very similar. 1353 */ 1354 switch(class) { 1355 case 'p': /* error on physical device */ 1356 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1357 if (action == 'r') 1358 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1359 break; 1360 case 'l': /* error on logical unit */ 1361 case 'm': /* message about logical unit */ 1362 bus = MLY_LOGDEV_BUS(sc, me->lun); 1363 target = MLY_LOGDEV_TARGET(sc, me->lun); 1364 mly_name_device(sc, bus, target); 1365 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1366 if (action == 'r') 1367 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1368 break; 1369 case 's': /* report of sense data */ 1370 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1371 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1372 (ssd->add_sense_code == 0x04) && 1373 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1374 break; /* ignore NO_SENSE or NOT_READY in one case */ 1375 1376 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1377 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1378 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1379 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1380 if (action == 'r') 1381 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1382 break; 1383 case 'e': 1384 mly_printf(sc, tp, me->target, me->lun); 1385 printf("\n"); 1386 break; 1387 case 'c': 1388 mly_printf(sc, "controller %s\n", tp); 1389 break; 1390 case '?': 1391 mly_printf(sc, "%s - %d\n", tp, me->code); 1392 break; 1393 default: /* probably a 'noisy' event being ignored */ 1394 break; 1395 } 1396 } 1397 1398 /******************************************************************************** 1399 * Perform periodic activities. 1400 */ 1401 static void 1402 mly_periodic(void *data) 1403 { 1404 struct mly_softc *sc = (struct mly_softc *)data; 1405 int bus, target; 1406 1407 debug_called(2); 1408 MLY_ASSERT_LOCKED(sc); 1409 1410 /* 1411 * Scan devices. 1412 */ 1413 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1414 if (MLY_BUS_IS_VALID(sc, bus)) { 1415 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1416 1417 /* ignore the controller in this scan */ 1418 if (target == sc->mly_controllerparam->initiator_id) 1419 continue; 1420 1421 /* perform device rescan? */ 1422 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1423 mly_rescan_btl(sc, bus, target); 1424 } 1425 } 1426 } 1427 1428 /* check for controller events */ 1429 mly_check_event(sc); 1430 1431 /* reschedule ourselves */ 1432 callout_schedule(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz); 1433 } 1434 1435 /******************************************************************************** 1436 ******************************************************************************** 1437 Command Processing 1438 ******************************************************************************** 1439 ********************************************************************************/ 1440 1441 /******************************************************************************** 1442 * Run a command and wait for it to complete. 1443 * 1444 */ 1445 static int 1446 mly_immediate_command(struct mly_command *mc) 1447 { 1448 struct mly_softc *sc = mc->mc_sc; 1449 int error; 1450 1451 debug_called(1); 1452 1453 MLY_ASSERT_LOCKED(sc); 1454 if ((error = mly_start(mc))) { 1455 return(error); 1456 } 1457 1458 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1459 /* sleep on the command */ 1460 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1461 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlywait", 0); 1462 } 1463 } else { 1464 /* spin and collect status while we do */ 1465 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1466 mly_done(mc->mc_sc); 1467 } 1468 } 1469 return(0); 1470 } 1471 1472 /******************************************************************************** 1473 * Deliver a command to the controller. 1474 * 1475 * XXX it would be good to just queue commands that we can't submit immediately 1476 * and send them later, but we probably want a wrapper for that so that 1477 * we don't hang on a failed submission for an immediate command. 1478 */ 1479 static int 1480 mly_start(struct mly_command *mc) 1481 { 1482 struct mly_softc *sc = mc->mc_sc; 1483 union mly_command_packet *pkt; 1484 1485 debug_called(2); 1486 MLY_ASSERT_LOCKED(sc); 1487 1488 /* 1489 * Set the command up for delivery to the controller. 1490 */ 1491 mly_map_command(mc); 1492 mc->mc_packet->generic.command_id = mc->mc_slot; 1493 1494 #ifdef MLY_DEBUG 1495 mc->mc_timestamp = time_second; 1496 #endif 1497 1498 /* 1499 * Do we have to use the hardware mailbox? 1500 */ 1501 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1502 /* 1503 * Check to see if the controller is ready for us. 1504 */ 1505 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1506 return(EBUSY); 1507 } 1508 mc->mc_flags |= MLY_CMD_BUSY; 1509 1510 /* 1511 * It's ready, send the command. 1512 */ 1513 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1514 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1515 1516 } else { /* use memory-mailbox mode */ 1517 1518 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1519 1520 /* check to see if the next index is free yet */ 1521 if (pkt->mmbox.flag != 0) { 1522 return(EBUSY); 1523 } 1524 mc->mc_flags |= MLY_CMD_BUSY; 1525 1526 /* copy in new command */ 1527 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1528 /* barrier to ensure completion of previous write before we write the flag */ 1529 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1530 /* copy flag last */ 1531 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1532 /* barrier to ensure completion of previous write before we notify the controller */ 1533 bus_barrier(sc->mly_regs_resource, 0, 0, BUS_SPACE_BARRIER_WRITE); 1534 1535 /* signal controller, update index */ 1536 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1537 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1538 } 1539 1540 mly_enqueue_busy(mc); 1541 return(0); 1542 } 1543 1544 /******************************************************************************** 1545 * Pick up command status from the controller, schedule a completion event 1546 */ 1547 static void 1548 mly_done(struct mly_softc *sc) 1549 { 1550 struct mly_command *mc; 1551 union mly_status_packet *sp; 1552 u_int16_t slot; 1553 int worked; 1554 1555 MLY_ASSERT_LOCKED(sc); 1556 worked = 0; 1557 1558 /* pick up hardware-mailbox commands */ 1559 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1560 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1561 if (slot < MLY_SLOT_MAX) { 1562 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1563 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1564 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1565 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1566 mly_remove_busy(mc); 1567 mc->mc_flags &= ~MLY_CMD_BUSY; 1568 mly_enqueue_complete(mc); 1569 worked = 1; 1570 } else { 1571 /* slot 0xffff may mean "extremely bogus command" */ 1572 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1573 } 1574 /* unconditionally acknowledge status */ 1575 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1576 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1577 } 1578 1579 /* pick up memory-mailbox commands */ 1580 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1581 for (;;) { 1582 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1583 1584 /* check for more status */ 1585 if (sp->mmbox.flag == 0) 1586 break; 1587 1588 /* get slot number */ 1589 slot = sp->status.command_id; 1590 if (slot < MLY_SLOT_MAX) { 1591 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1592 mc->mc_status = sp->status.status; 1593 mc->mc_sense = sp->status.sense_length; 1594 mc->mc_resid = sp->status.residue; 1595 mly_remove_busy(mc); 1596 mc->mc_flags &= ~MLY_CMD_BUSY; 1597 mly_enqueue_complete(mc); 1598 worked = 1; 1599 } else { 1600 /* slot 0xffff may mean "extremely bogus command" */ 1601 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1602 slot, sc->mly_mmbox_status_index); 1603 } 1604 1605 /* clear and move to next index */ 1606 sp->mmbox.flag = 0; 1607 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1608 } 1609 /* acknowledge that we have collected status value(s) */ 1610 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1611 } 1612 1613 if (worked) { 1614 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1615 taskqueue_enqueue(taskqueue_thread, &sc->mly_task_complete); 1616 else 1617 mly_complete(sc); 1618 } 1619 } 1620 1621 /******************************************************************************** 1622 * Process completed commands 1623 */ 1624 static void 1625 mly_complete_handler(void *context, int pending) 1626 { 1627 struct mly_softc *sc = (struct mly_softc *)context; 1628 1629 MLY_LOCK(sc); 1630 mly_complete(sc); 1631 MLY_UNLOCK(sc); 1632 } 1633 1634 static void 1635 mly_complete(struct mly_softc *sc) 1636 { 1637 struct mly_command *mc; 1638 void (* mc_complete)(struct mly_command *mc); 1639 1640 debug_called(2); 1641 1642 /* 1643 * Spin pulling commands off the completed queue and processing them. 1644 */ 1645 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1646 1647 /* 1648 * Free controller resources, mark command complete. 1649 * 1650 * Note that as soon as we mark the command complete, it may be freed 1651 * out from under us, so we need to save the mc_complete field in 1652 * order to later avoid dereferencing mc. (We would not expect to 1653 * have a polling/sleeping consumer with mc_complete != NULL). 1654 */ 1655 mly_unmap_command(mc); 1656 mc_complete = mc->mc_complete; 1657 mc->mc_flags |= MLY_CMD_COMPLETE; 1658 1659 /* 1660 * Call completion handler or wake up sleeping consumer. 1661 */ 1662 if (mc_complete != NULL) { 1663 mc_complete(mc); 1664 } else { 1665 wakeup(mc); 1666 } 1667 } 1668 1669 /* 1670 * XXX if we are deferring commands due to controller-busy status, we should 1671 * retry submitting them here. 1672 */ 1673 } 1674 1675 /******************************************************************************** 1676 ******************************************************************************** 1677 Command Buffer Management 1678 ******************************************************************************** 1679 ********************************************************************************/ 1680 1681 /******************************************************************************** 1682 * Allocate a command. 1683 */ 1684 static int 1685 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1686 { 1687 struct mly_command *mc; 1688 1689 debug_called(3); 1690 1691 if ((mc = mly_dequeue_free(sc)) == NULL) 1692 return(ENOMEM); 1693 1694 *mcp = mc; 1695 return(0); 1696 } 1697 1698 /******************************************************************************** 1699 * Release a command back to the freelist. 1700 */ 1701 static void 1702 mly_release_command(struct mly_command *mc) 1703 { 1704 debug_called(3); 1705 1706 /* 1707 * Fill in parts of the command that may cause confusion if 1708 * a consumer doesn't when we are later allocated. 1709 */ 1710 mc->mc_data = NULL; 1711 mc->mc_flags = 0; 1712 mc->mc_complete = NULL; 1713 mc->mc_private = NULL; 1714 1715 /* 1716 * By default, we set up to overwrite the command packet with 1717 * sense information. 1718 */ 1719 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1720 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1721 1722 mly_enqueue_free(mc); 1723 } 1724 1725 /******************************************************************************** 1726 * Map helper for command allocation. 1727 */ 1728 static void 1729 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1730 { 1731 struct mly_softc *sc = (struct mly_softc *)arg; 1732 1733 debug_called(1); 1734 1735 sc->mly_packetphys = segs[0].ds_addr; 1736 } 1737 1738 /******************************************************************************** 1739 * Allocate and initialise command and packet structures. 1740 * 1741 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1742 * allocation to that number. If we don't yet know how many commands the 1743 * controller supports, allocate a very small set (suitable for initialisation 1744 * purposes only). 1745 */ 1746 static int 1747 mly_alloc_commands(struct mly_softc *sc) 1748 { 1749 struct mly_command *mc; 1750 int i, ncmd; 1751 1752 if (sc->mly_controllerinfo == NULL) { 1753 ncmd = 4; 1754 } else { 1755 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1756 } 1757 1758 /* 1759 * Allocate enough space for all the command packets in one chunk and 1760 * map them permanently into controller-visible space. 1761 */ 1762 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1763 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1764 return(ENOMEM); 1765 } 1766 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1767 ncmd * sizeof(union mly_command_packet), 1768 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1769 return (ENOMEM); 1770 1771 for (i = 0; i < ncmd; i++) { 1772 mc = &sc->mly_command[i]; 1773 bzero(mc, sizeof(*mc)); 1774 mc->mc_sc = sc; 1775 mc->mc_slot = MLY_SLOT_START + i; 1776 mc->mc_packet = sc->mly_packet + i; 1777 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1778 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1779 mly_release_command(mc); 1780 } 1781 return(0); 1782 } 1783 1784 /******************************************************************************** 1785 * Free all the storage held by commands. 1786 * 1787 * Must be called with all commands on the free list. 1788 */ 1789 static void 1790 mly_release_commands(struct mly_softc *sc) 1791 { 1792 struct mly_command *mc; 1793 1794 /* throw away command buffer DMA maps */ 1795 while (mly_alloc_command(sc, &mc) == 0) 1796 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1797 1798 /* release the packet storage */ 1799 if (sc->mly_packet != NULL) { 1800 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1801 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1802 sc->mly_packet = NULL; 1803 } 1804 } 1805 1806 1807 /******************************************************************************** 1808 * Command-mapping helper function - populate this command's s/g table 1809 * with the s/g entries for its data. 1810 */ 1811 static void 1812 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1813 { 1814 struct mly_command *mc = (struct mly_command *)arg; 1815 struct mly_softc *sc = mc->mc_sc; 1816 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1817 struct mly_sg_entry *sg; 1818 int i, tabofs; 1819 1820 debug_called(2); 1821 1822 /* can we use the transfer structure directly? */ 1823 if (nseg <= 2) { 1824 sg = &gen->transfer.direct.sg[0]; 1825 gen->command_control.extended_sg_table = 0; 1826 } else { 1827 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1828 sg = sc->mly_sg_table + tabofs; 1829 gen->transfer.indirect.entries[0] = nseg; 1830 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1831 gen->command_control.extended_sg_table = 1; 1832 } 1833 1834 /* copy the s/g table */ 1835 for (i = 0; i < nseg; i++) { 1836 sg[i].physaddr = segs[i].ds_addr; 1837 sg[i].length = segs[i].ds_len; 1838 } 1839 1840 } 1841 1842 #if 0 1843 /******************************************************************************** 1844 * Command-mapping helper function - save the cdb's physical address. 1845 * 1846 * We don't support 'large' SCSI commands at this time, so this is unused. 1847 */ 1848 static void 1849 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1850 { 1851 struct mly_command *mc = (struct mly_command *)arg; 1852 1853 debug_called(2); 1854 1855 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1856 if ((segs[0].ds_addr % PAGE_SIZE) > 1857 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1858 panic("cdb crosses page boundary"); 1859 1860 /* fix up fields in the command packet */ 1861 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1862 } 1863 #endif 1864 1865 /******************************************************************************** 1866 * Map a command into controller-visible space 1867 */ 1868 static void 1869 mly_map_command(struct mly_command *mc) 1870 { 1871 struct mly_softc *sc = mc->mc_sc; 1872 1873 debug_called(2); 1874 1875 /* don't map more than once */ 1876 if (mc->mc_flags & MLY_CMD_MAPPED) 1877 return; 1878 1879 /* does the command have a data buffer? */ 1880 if (mc->mc_data != NULL) { 1881 if (mc->mc_flags & MLY_CMD_CCB) 1882 bus_dmamap_load_ccb(sc->mly_buffer_dmat, mc->mc_datamap, 1883 mc->mc_data, mly_map_command_sg, mc, 0); 1884 else 1885 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, 1886 mc->mc_data, mc->mc_length, 1887 mly_map_command_sg, mc, 0); 1888 if (mc->mc_flags & MLY_CMD_DATAIN) 1889 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1890 if (mc->mc_flags & MLY_CMD_DATAOUT) 1891 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1892 } 1893 mc->mc_flags |= MLY_CMD_MAPPED; 1894 } 1895 1896 /******************************************************************************** 1897 * Unmap a command from controller-visible space 1898 */ 1899 static void 1900 mly_unmap_command(struct mly_command *mc) 1901 { 1902 struct mly_softc *sc = mc->mc_sc; 1903 1904 debug_called(2); 1905 1906 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1907 return; 1908 1909 /* does the command have a data buffer? */ 1910 if (mc->mc_data != NULL) { 1911 if (mc->mc_flags & MLY_CMD_DATAIN) 1912 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1913 if (mc->mc_flags & MLY_CMD_DATAOUT) 1914 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1915 1916 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1917 } 1918 mc->mc_flags &= ~MLY_CMD_MAPPED; 1919 } 1920 1921 1922 /******************************************************************************** 1923 ******************************************************************************** 1924 CAM interface 1925 ******************************************************************************** 1926 ********************************************************************************/ 1927 1928 /******************************************************************************** 1929 * Attach the physical and virtual SCSI busses to CAM. 1930 * 1931 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1932 * than the highest physical bus. Physical busses are only registered if 1933 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1934 * 1935 * When we refer to a "bus", we are referring to the bus number registered with 1936 * the SIM, whereas a "channel" is a channel number given to the adapter. In order 1937 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1938 * interchangeably. 1939 */ 1940 static int 1941 mly_cam_attach(struct mly_softc *sc) 1942 { 1943 struct cam_devq *devq; 1944 int chn, i; 1945 1946 debug_called(1); 1947 1948 /* 1949 * Allocate a devq for all our channels combined. 1950 */ 1951 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1952 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1953 return(ENOMEM); 1954 } 1955 1956 /* 1957 * If physical channel registration has been requested, register these first. 1958 * Note that we enable tagged command queueing for physical channels. 1959 */ 1960 if (testenv("hw.mly.register_physical_channels")) { 1961 chn = 0; 1962 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1963 1964 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1965 device_get_unit(sc->mly_dev), 1966 &sc->mly_lock, 1967 sc->mly_controllerinfo->maximum_parallel_commands, 1968 1, devq)) == NULL) { 1969 return(ENOMEM); 1970 } 1971 MLY_LOCK(sc); 1972 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1973 MLY_UNLOCK(sc); 1974 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1975 return(ENXIO); 1976 } 1977 MLY_UNLOCK(sc); 1978 debug(1, "registered physical channel %d", chn); 1979 } 1980 } 1981 1982 /* 1983 * Register our virtual channels, with bus numbers matching channel numbers. 1984 */ 1985 chn = sc->mly_controllerinfo->physical_channels_present; 1986 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1987 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1988 device_get_unit(sc->mly_dev), 1989 &sc->mly_lock, 1990 sc->mly_controllerinfo->maximum_parallel_commands, 1991 0, devq)) == NULL) { 1992 return(ENOMEM); 1993 } 1994 MLY_LOCK(sc); 1995 if (xpt_bus_register(sc->mly_cam_sim[chn], sc->mly_dev, chn)) { 1996 MLY_UNLOCK(sc); 1997 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1998 return(ENXIO); 1999 } 2000 MLY_UNLOCK(sc); 2001 debug(1, "registered virtual channel %d", chn); 2002 } 2003 2004 /* 2005 * This is the total number of channels that (might have been) registered with 2006 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 2007 */ 2008 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 2009 sc->mly_controllerinfo->virtual_channels_present; 2010 2011 return(0); 2012 } 2013 2014 /******************************************************************************** 2015 * Detach from CAM 2016 */ 2017 static void 2018 mly_cam_detach(struct mly_softc *sc) 2019 { 2020 int i; 2021 2022 debug_called(1); 2023 2024 MLY_LOCK(sc); 2025 for (i = 0; i < sc->mly_cam_channels; i++) { 2026 if (sc->mly_cam_sim[i] != NULL) { 2027 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 2028 cam_sim_free(sc->mly_cam_sim[i], 0); 2029 } 2030 } 2031 MLY_UNLOCK(sc); 2032 if (sc->mly_cam_devq != NULL) 2033 cam_simq_free(sc->mly_cam_devq); 2034 } 2035 2036 /************************************************************************ 2037 * Rescan a device. 2038 */ 2039 static void 2040 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2041 { 2042 union ccb *ccb; 2043 2044 debug_called(1); 2045 2046 if ((ccb = xpt_alloc_ccb()) == NULL) { 2047 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2048 return; 2049 } 2050 if (xpt_create_path(&ccb->ccb_h.path, NULL, 2051 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2052 mly_printf(sc, "rescan failed (can't create path)\n"); 2053 xpt_free_ccb(ccb); 2054 return; 2055 } 2056 debug(1, "rescan target %d:%d", bus, target); 2057 xpt_rescan(ccb); 2058 } 2059 2060 /******************************************************************************** 2061 * Handle an action requested by CAM 2062 */ 2063 static void 2064 mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2065 { 2066 struct mly_softc *sc = cam_sim_softc(sim); 2067 2068 debug_called(2); 2069 MLY_ASSERT_LOCKED(sc); 2070 2071 switch (ccb->ccb_h.func_code) { 2072 2073 /* perform SCSI I/O */ 2074 case XPT_SCSI_IO: 2075 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2076 return; 2077 break; 2078 2079 /* perform geometry calculations */ 2080 case XPT_CALC_GEOMETRY: 2081 { 2082 struct ccb_calc_geometry *ccg = &ccb->ccg; 2083 u_int32_t secs_per_cylinder; 2084 2085 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2086 2087 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2088 ccg->heads = 255; 2089 ccg->secs_per_track = 63; 2090 } else { /* MLY_BIOSGEOM_2G */ 2091 ccg->heads = 128; 2092 ccg->secs_per_track = 32; 2093 } 2094 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2095 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2096 ccb->ccb_h.status = CAM_REQ_CMP; 2097 break; 2098 } 2099 2100 /* handle path attribute inquiry */ 2101 case XPT_PATH_INQ: 2102 { 2103 struct ccb_pathinq *cpi = &ccb->cpi; 2104 2105 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2106 2107 cpi->version_num = 1; 2108 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2109 cpi->target_sprt = 0; 2110 cpi->hba_misc = 0; 2111 cpi->max_target = MLY_MAX_TARGETS - 1; 2112 cpi->max_lun = MLY_MAX_LUNS - 1; 2113 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2114 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2115 strlcpy(cpi->hba_vid, "Mylex", HBA_IDLEN); 2116 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2117 cpi->unit_number = cam_sim_unit(sim); 2118 cpi->bus_id = cam_sim_bus(sim); 2119 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2120 cpi->transport = XPORT_SPI; 2121 cpi->transport_version = 2; 2122 cpi->protocol = PROTO_SCSI; 2123 cpi->protocol_version = SCSI_REV_2; 2124 ccb->ccb_h.status = CAM_REQ_CMP; 2125 break; 2126 } 2127 2128 case XPT_GET_TRAN_SETTINGS: 2129 { 2130 struct ccb_trans_settings *cts = &ccb->cts; 2131 int bus, target; 2132 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2133 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2134 2135 cts->protocol = PROTO_SCSI; 2136 cts->protocol_version = SCSI_REV_2; 2137 cts->transport = XPORT_SPI; 2138 cts->transport_version = 2; 2139 2140 scsi->flags = 0; 2141 scsi->valid = 0; 2142 spi->flags = 0; 2143 spi->valid = 0; 2144 2145 bus = cam_sim_bus(sim); 2146 target = cts->ccb_h.target_id; 2147 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2148 /* logical device? */ 2149 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2150 /* nothing special for these */ 2151 /* physical device? */ 2152 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2153 /* allow CAM to try tagged transactions */ 2154 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2155 scsi->valid |= CTS_SCSI_VALID_TQ; 2156 2157 /* convert speed (MHz) to usec */ 2158 if (sc->mly_btl[bus][target].mb_speed == 0) { 2159 spi->sync_period = 1000000 / 5; 2160 } else { 2161 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2162 } 2163 2164 /* convert bus width to CAM internal encoding */ 2165 switch (sc->mly_btl[bus][target].mb_width) { 2166 case 32: 2167 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2168 break; 2169 case 16: 2170 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2171 break; 2172 case 8: 2173 default: 2174 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2175 break; 2176 } 2177 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2178 2179 /* not a device, bail out */ 2180 } else { 2181 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2182 break; 2183 } 2184 2185 /* disconnect always OK */ 2186 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2187 spi->valid |= CTS_SPI_VALID_DISC; 2188 2189 cts->ccb_h.status = CAM_REQ_CMP; 2190 break; 2191 } 2192 2193 default: /* we can't do this */ 2194 debug(2, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2195 ccb->ccb_h.status = CAM_REQ_INVALID; 2196 break; 2197 } 2198 2199 xpt_done(ccb); 2200 } 2201 2202 /******************************************************************************** 2203 * Handle an I/O operation requested by CAM 2204 */ 2205 static int 2206 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2207 { 2208 struct mly_softc *sc = cam_sim_softc(sim); 2209 struct mly_command *mc; 2210 struct mly_command_scsi_small *ss; 2211 int bus, target; 2212 int error; 2213 2214 bus = cam_sim_bus(sim); 2215 target = csio->ccb_h.target_id; 2216 2217 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2218 2219 /* validate bus number */ 2220 if (!MLY_BUS_IS_VALID(sc, bus)) { 2221 debug(0, " invalid bus %d", bus); 2222 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2223 } 2224 2225 /* check for I/O attempt to a protected device */ 2226 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2227 debug(2, " device protected"); 2228 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2229 } 2230 2231 /* check for I/O attempt to nonexistent device */ 2232 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2233 debug(2, " device %d:%d does not exist", bus, target); 2234 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2235 } 2236 2237 /* XXX increase if/when we support large SCSI commands */ 2238 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2239 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2240 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2241 } 2242 2243 /* check that the CDB pointer is not to a physical address */ 2244 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2245 debug(0, " CDB pointer is to physical address"); 2246 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2247 } 2248 2249 /* abandon aborted ccbs or those that have failed validation */ 2250 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2251 debug(2, "abandoning CCB due to abort/validation failure"); 2252 return(EINVAL); 2253 } 2254 2255 /* 2256 * Get a command, or push the ccb back to CAM and freeze the queue. 2257 */ 2258 if ((error = mly_alloc_command(sc, &mc))) { 2259 xpt_freeze_simq(sim, 1); 2260 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2261 sc->mly_qfrzn_cnt++; 2262 return(error); 2263 } 2264 2265 /* build the command */ 2266 mc->mc_data = csio; 2267 mc->mc_length = csio->dxfer_len; 2268 mc->mc_complete = mly_cam_complete; 2269 mc->mc_private = csio; 2270 mc->mc_flags |= MLY_CMD_CCB; 2271 /* XXX This code doesn't set the data direction in mc_flags. */ 2272 2273 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2274 csio->ccb_h.sim_priv.entries[0].field = bus; 2275 2276 /* build the packet for the controller */ 2277 ss = &mc->mc_packet->scsi_small; 2278 ss->opcode = MDACMD_SCSI; 2279 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2280 ss->command_control.disable_disconnect = 1; 2281 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2282 ss->command_control.data_direction = MLY_CCB_WRITE; 2283 ss->data_size = csio->dxfer_len; 2284 ss->addr.phys.lun = csio->ccb_h.target_lun; 2285 ss->addr.phys.target = csio->ccb_h.target_id; 2286 ss->addr.phys.channel = bus; 2287 if (csio->ccb_h.timeout < (60 * 1000)) { 2288 ss->timeout.value = csio->ccb_h.timeout / 1000; 2289 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2290 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2291 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2292 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2293 } else { 2294 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2295 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2296 } 2297 ss->maximum_sense_size = csio->sense_len; 2298 ss->cdb_length = csio->cdb_len; 2299 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2300 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2301 } else { 2302 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2303 } 2304 2305 /* give the command to the controller */ 2306 if ((error = mly_start(mc))) { 2307 xpt_freeze_simq(sim, 1); 2308 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2309 sc->mly_qfrzn_cnt++; 2310 return(error); 2311 } 2312 2313 return(0); 2314 } 2315 2316 /******************************************************************************** 2317 * Check for possibly-completed commands. 2318 */ 2319 static void 2320 mly_cam_poll(struct cam_sim *sim) 2321 { 2322 struct mly_softc *sc = cam_sim_softc(sim); 2323 2324 debug_called(2); 2325 2326 mly_done(sc); 2327 } 2328 2329 /******************************************************************************** 2330 * Handle completion of a command - pass results back through the CCB 2331 */ 2332 static void 2333 mly_cam_complete(struct mly_command *mc) 2334 { 2335 struct mly_softc *sc = mc->mc_sc; 2336 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2337 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2338 struct mly_btl *btl; 2339 u_int8_t cmd; 2340 int bus, target; 2341 2342 debug_called(2); 2343 2344 csio->scsi_status = mc->mc_status; 2345 switch(mc->mc_status) { 2346 case SCSI_STATUS_OK: 2347 /* 2348 * In order to report logical device type and status, we overwrite 2349 * the result of the INQUIRY command to logical devices. 2350 */ 2351 bus = csio->ccb_h.sim_priv.entries[0].field; 2352 target = csio->ccb_h.target_id; 2353 /* XXX validate bus/target? */ 2354 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2355 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2356 cmd = *csio->cdb_io.cdb_ptr; 2357 } else { 2358 cmd = csio->cdb_io.cdb_bytes[0]; 2359 } 2360 if (cmd == INQUIRY) { 2361 btl = &sc->mly_btl[bus][target]; 2362 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2363 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2364 padstr(inq->revision, "", 4); 2365 } 2366 } 2367 2368 debug(2, "SCSI_STATUS_OK"); 2369 csio->ccb_h.status = CAM_REQ_CMP; 2370 break; 2371 2372 case SCSI_STATUS_CHECK_COND: 2373 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2374 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2375 bzero(&csio->sense_data, SSD_FULL_SIZE); 2376 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2377 csio->sense_len = mc->mc_sense; 2378 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2379 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2380 break; 2381 2382 case SCSI_STATUS_BUSY: 2383 debug(1, "SCSI_STATUS_BUSY"); 2384 csio->ccb_h.status = CAM_SCSI_BUSY; 2385 break; 2386 2387 default: 2388 debug(1, "unknown status 0x%x", csio->scsi_status); 2389 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2390 break; 2391 } 2392 2393 if (sc->mly_qfrzn_cnt) { 2394 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2395 sc->mly_qfrzn_cnt--; 2396 } 2397 2398 xpt_done((union ccb *)csio); 2399 mly_release_command(mc); 2400 } 2401 2402 /******************************************************************************** 2403 * Find a peripheral attahed at (bus),(target) 2404 */ 2405 static struct cam_periph * 2406 mly_find_periph(struct mly_softc *sc, int bus, int target) 2407 { 2408 struct cam_periph *periph; 2409 struct cam_path *path; 2410 int status; 2411 2412 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2413 if (status == CAM_REQ_CMP) { 2414 periph = cam_periph_find(path, NULL); 2415 xpt_free_path(path); 2416 } else { 2417 periph = NULL; 2418 } 2419 return(periph); 2420 } 2421 2422 /******************************************************************************** 2423 * Name the device at (bus)(target) 2424 */ 2425 static int 2426 mly_name_device(struct mly_softc *sc, int bus, int target) 2427 { 2428 struct cam_periph *periph; 2429 2430 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2431 sprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2432 return(0); 2433 } 2434 sc->mly_btl[bus][target].mb_name[0] = 0; 2435 return(ENOENT); 2436 } 2437 2438 /******************************************************************************** 2439 ******************************************************************************** 2440 Hardware Control 2441 ******************************************************************************** 2442 ********************************************************************************/ 2443 2444 /******************************************************************************** 2445 * Handshake with the firmware while the card is being initialised. 2446 */ 2447 static int 2448 mly_fwhandshake(struct mly_softc *sc) 2449 { 2450 u_int8_t error, param0, param1; 2451 int spinup = 0; 2452 2453 debug_called(1); 2454 2455 /* set HM_STSACK and let the firmware initialise */ 2456 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2457 DELAY(1000); /* too short? */ 2458 2459 /* if HM_STSACK is still true, the controller is initialising */ 2460 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2461 return(0); 2462 mly_printf(sc, "controller initialisation started\n"); 2463 2464 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2465 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2466 /* check for a message */ 2467 if (MLY_ERROR_VALID(sc)) { 2468 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2469 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2470 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2471 2472 switch(error) { 2473 case MLY_MSG_SPINUP: 2474 if (!spinup) { 2475 mly_printf(sc, "drive spinup in progress\n"); 2476 spinup = 1; /* only print this once (should print drive being spun?) */ 2477 } 2478 break; 2479 case MLY_MSG_RACE_RECOVERY_FAIL: 2480 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2481 break; 2482 case MLY_MSG_RACE_IN_PROGRESS: 2483 mly_printf(sc, "mirror race recovery in progress\n"); 2484 break; 2485 case MLY_MSG_RACE_ON_CRITICAL: 2486 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2487 break; 2488 case MLY_MSG_PARITY_ERROR: 2489 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2490 return(ENXIO); 2491 default: 2492 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2493 } 2494 } 2495 } 2496 return(0); 2497 } 2498 2499 /******************************************************************************** 2500 ******************************************************************************** 2501 Debugging and Diagnostics 2502 ******************************************************************************** 2503 ********************************************************************************/ 2504 2505 /******************************************************************************** 2506 * Print some information about the controller. 2507 */ 2508 static void 2509 mly_describe_controller(struct mly_softc *sc) 2510 { 2511 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2512 2513 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2514 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2515 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2516 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2517 mi->memory_size); 2518 2519 if (bootverbose) { 2520 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2521 mly_describe_code(mly_table_oemname, mi->oem_information), 2522 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2523 mi->interface_speed, mi->interface_width, mi->interface_name); 2524 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2525 mi->memory_size, mi->memory_speed, mi->memory_width, 2526 mly_describe_code(mly_table_memorytype, mi->memory_type), 2527 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2528 mi->cache_size); 2529 mly_printf(sc, "CPU: %s @ %dMHz\n", 2530 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2531 if (mi->l2cache_size != 0) 2532 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2533 if (mi->exmemory_size != 0) 2534 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2535 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2536 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2537 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2538 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2539 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2540 mi->maximum_block_count, mi->maximum_sg_entries); 2541 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2542 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2543 mly_printf(sc, "physical devices present %d\n", 2544 mi->physical_devices_present); 2545 mly_printf(sc, "physical disks present/offline %d/%d\n", 2546 mi->physical_disks_present, mi->physical_disks_offline); 2547 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2548 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2549 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2550 mi->virtual_channels_possible); 2551 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2552 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2553 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2554 } 2555 } 2556 2557 #ifdef MLY_DEBUG 2558 /******************************************************************************** 2559 * Print some controller state 2560 */ 2561 static void 2562 mly_printstate(struct mly_softc *sc) 2563 { 2564 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2565 MLY_GET_REG(sc, sc->mly_idbr), 2566 MLY_GET_REG(sc, sc->mly_odbr), 2567 MLY_GET_REG(sc, sc->mly_error_status), 2568 sc->mly_idbr, 2569 sc->mly_odbr, 2570 sc->mly_error_status); 2571 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2572 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2573 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2574 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2575 MLY_GET_REG(sc, sc->mly_command_mailbox), 2576 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2577 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2578 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2579 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2580 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2581 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2582 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2583 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2584 MLY_GET_REG(sc, sc->mly_status_mailbox), 2585 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2586 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2587 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2588 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2589 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2590 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2591 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2592 mly_printf(sc, " %04x %08x\n", 2593 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2594 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2595 } 2596 2597 struct mly_softc *mly_softc0 = NULL; 2598 void 2599 mly_printstate0(void) 2600 { 2601 if (mly_softc0 != NULL) 2602 mly_printstate(mly_softc0); 2603 } 2604 2605 /******************************************************************************** 2606 * Print a command 2607 */ 2608 static void 2609 mly_print_command(struct mly_command *mc) 2610 { 2611 struct mly_softc *sc = mc->mc_sc; 2612 2613 mly_printf(sc, "COMMAND @ %p\n", mc); 2614 mly_printf(sc, " slot %d\n", mc->mc_slot); 2615 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2616 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2617 mly_printf(sc, " resid %d\n", mc->mc_resid); 2618 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2619 if (mc->mc_packet != NULL) 2620 mly_print_packet(mc); 2621 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2622 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2623 mly_printf(sc, " complete %p\n", mc->mc_complete); 2624 mly_printf(sc, " private %p\n", mc->mc_private); 2625 } 2626 2627 /******************************************************************************** 2628 * Print a command packet 2629 */ 2630 static void 2631 mly_print_packet(struct mly_command *mc) 2632 { 2633 struct mly_softc *sc = mc->mc_sc; 2634 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2635 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2636 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2637 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2638 int transfer; 2639 2640 mly_printf(sc, " command_id %d\n", ge->command_id); 2641 mly_printf(sc, " opcode %d\n", ge->opcode); 2642 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2643 ge->command_control.force_unit_access, 2644 ge->command_control.disable_page_out, 2645 ge->command_control.extended_sg_table, 2646 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2647 ge->command_control.no_auto_sense, 2648 ge->command_control.disable_disconnect); 2649 mly_printf(sc, " data_size %d\n", ge->data_size); 2650 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2651 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2652 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2653 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2654 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2655 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2656 mly_printf(sc, " timeout %d %s\n", 2657 ge->timeout.value, 2658 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2659 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2660 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2661 switch(ge->opcode) { 2662 case MDACMD_SCSIPT: 2663 case MDACMD_SCSI: 2664 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2665 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2666 transfer = 1; 2667 break; 2668 case MDACMD_SCSILC: 2669 case MDACMD_SCSILCPT: 2670 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2671 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2672 transfer = 1; 2673 break; 2674 case MDACMD_IOCTL: 2675 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2676 switch(io->sub_ioctl) { 2677 case MDACIOCTL_SETMEMORYMAILBOX: 2678 mly_printf(sc, " health_buffer_size %d\n", 2679 io->param.setmemorymailbox.health_buffer_size); 2680 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2681 io->param.setmemorymailbox.health_buffer_physaddr); 2682 mly_printf(sc, " command_mailbox 0x%llx\n", 2683 io->param.setmemorymailbox.command_mailbox_physaddr); 2684 mly_printf(sc, " status_mailbox 0x%llx\n", 2685 io->param.setmemorymailbox.status_mailbox_physaddr); 2686 transfer = 0; 2687 break; 2688 2689 case MDACIOCTL_SETREALTIMECLOCK: 2690 case MDACIOCTL_GETHEALTHSTATUS: 2691 case MDACIOCTL_GETCONTROLLERINFO: 2692 case MDACIOCTL_GETLOGDEVINFOVALID: 2693 case MDACIOCTL_GETPHYSDEVINFOVALID: 2694 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2695 case MDACIOCTL_GETLOGDEVSTATISTICS: 2696 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2697 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2698 case MDACIOCTL_CREATENEWCONF: 2699 case MDACIOCTL_ADDNEWCONF: 2700 case MDACIOCTL_GETDEVCONFINFO: 2701 case MDACIOCTL_GETFREESPACELIST: 2702 case MDACIOCTL_MORE: 2703 case MDACIOCTL_SETPHYSDEVPARAMETER: 2704 case MDACIOCTL_GETPHYSDEVPARAMETER: 2705 case MDACIOCTL_GETLOGDEVPARAMETER: 2706 case MDACIOCTL_SETLOGDEVPARAMETER: 2707 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2708 transfer = 1; 2709 break; 2710 2711 case MDACIOCTL_GETEVENT: 2712 mly_printf(sc, " event %d\n", 2713 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2714 transfer = 1; 2715 break; 2716 2717 case MDACIOCTL_SETRAIDDEVSTATE: 2718 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2719 transfer = 0; 2720 break; 2721 2722 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2723 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2724 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2725 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2726 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2727 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2728 transfer = 0; 2729 break; 2730 2731 case MDACIOCTL_GETGROUPCONFINFO: 2732 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2733 transfer = 1; 2734 break; 2735 2736 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2737 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2738 case MDACIOCTL_STARTDISOCVERY: 2739 case MDACIOCTL_INITPHYSDEVSTART: 2740 case MDACIOCTL_INITPHYSDEVSTOP: 2741 case MDACIOCTL_INITRAIDDEVSTART: 2742 case MDACIOCTL_INITRAIDDEVSTOP: 2743 case MDACIOCTL_REBUILDRAIDDEVSTART: 2744 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2745 case MDACIOCTL_MAKECONSISTENTDATASTART: 2746 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2747 case MDACIOCTL_CONSISTENCYCHECKSTART: 2748 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2749 case MDACIOCTL_RESETDEVICE: 2750 case MDACIOCTL_FLUSHDEVICEDATA: 2751 case MDACIOCTL_PAUSEDEVICE: 2752 case MDACIOCTL_UNPAUSEDEVICE: 2753 case MDACIOCTL_LOCATEDEVICE: 2754 case MDACIOCTL_SETMASTERSLAVEMODE: 2755 case MDACIOCTL_DELETERAIDDEV: 2756 case MDACIOCTL_REPLACEINTERNALDEV: 2757 case MDACIOCTL_CLEARCONF: 2758 case MDACIOCTL_GETCONTROLLERPARAMETER: 2759 case MDACIOCTL_SETCONTRLLERPARAMETER: 2760 case MDACIOCTL_CLEARCONFSUSPMODE: 2761 case MDACIOCTL_STOREIMAGE: 2762 case MDACIOCTL_READIMAGE: 2763 case MDACIOCTL_FLASHIMAGES: 2764 case MDACIOCTL_RENAMERAIDDEV: 2765 default: /* no idea what to print */ 2766 transfer = 0; 2767 break; 2768 } 2769 break; 2770 2771 case MDACMD_IOCTLCHECK: 2772 case MDACMD_MEMCOPY: 2773 default: 2774 transfer = 0; 2775 break; /* print nothing */ 2776 } 2777 if (transfer) { 2778 if (ge->command_control.extended_sg_table) { 2779 mly_printf(sc, " sg table 0x%llx/%d\n", 2780 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2781 } else { 2782 mly_printf(sc, " 0000 0x%llx/%lld\n", 2783 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2784 mly_printf(sc, " 0001 0x%llx/%lld\n", 2785 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2786 } 2787 } 2788 } 2789 2790 /******************************************************************************** 2791 * Panic in a slightly informative fashion 2792 */ 2793 static void 2794 mly_panic(struct mly_softc *sc, char *reason) 2795 { 2796 mly_printstate(sc); 2797 panic(reason); 2798 } 2799 2800 /******************************************************************************** 2801 * Print queue statistics, callable from DDB. 2802 */ 2803 void 2804 mly_print_controller(int controller) 2805 { 2806 struct mly_softc *sc; 2807 2808 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2809 printf("mly: controller %d invalid\n", controller); 2810 } else { 2811 device_printf(sc->mly_dev, "queue curr max\n"); 2812 device_printf(sc->mly_dev, "free %04d/%04d\n", 2813 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2814 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2815 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2816 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2817 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2818 } 2819 } 2820 #endif 2821 2822 2823 /******************************************************************************** 2824 ******************************************************************************** 2825 Control device interface 2826 ******************************************************************************** 2827 ********************************************************************************/ 2828 2829 /******************************************************************************** 2830 * Accept an open operation on the control device. 2831 */ 2832 static int 2833 mly_user_open(struct cdev *dev, int flags, int fmt, struct thread *td) 2834 { 2835 struct mly_softc *sc = dev->si_drv1; 2836 2837 MLY_LOCK(sc); 2838 sc->mly_state |= MLY_STATE_OPEN; 2839 MLY_UNLOCK(sc); 2840 return(0); 2841 } 2842 2843 /******************************************************************************** 2844 * Accept the last close on the control device. 2845 */ 2846 static int 2847 mly_user_close(struct cdev *dev, int flags, int fmt, struct thread *td) 2848 { 2849 struct mly_softc *sc = dev->si_drv1; 2850 2851 MLY_LOCK(sc); 2852 sc->mly_state &= ~MLY_STATE_OPEN; 2853 MLY_UNLOCK(sc); 2854 return (0); 2855 } 2856 2857 /******************************************************************************** 2858 * Handle controller-specific control operations. 2859 */ 2860 static int 2861 mly_user_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 2862 int32_t flag, struct thread *td) 2863 { 2864 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2865 struct mly_user_command *uc = (struct mly_user_command *)addr; 2866 struct mly_user_health *uh = (struct mly_user_health *)addr; 2867 2868 switch(cmd) { 2869 case MLYIO_COMMAND: 2870 return(mly_user_command(sc, uc)); 2871 case MLYIO_HEALTH: 2872 return(mly_user_health(sc, uh)); 2873 default: 2874 return(ENOIOCTL); 2875 } 2876 } 2877 2878 /******************************************************************************** 2879 * Execute a command passed in from userspace. 2880 * 2881 * The control structure contains the actual command for the controller, as well 2882 * as the user-space data pointer and data size, and an optional sense buffer 2883 * size/pointer. On completion, the data size is adjusted to the command 2884 * residual, and the sense buffer size to the size of the returned sense data. 2885 * 2886 */ 2887 static int 2888 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2889 { 2890 struct mly_command *mc; 2891 int error; 2892 2893 /* allocate a command */ 2894 MLY_LOCK(sc); 2895 if (mly_alloc_command(sc, &mc)) { 2896 MLY_UNLOCK(sc); 2897 return (ENOMEM); /* XXX Linux version will wait for a command */ 2898 } 2899 MLY_UNLOCK(sc); 2900 2901 /* handle data size/direction */ 2902 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2903 if (mc->mc_length > 0) { 2904 if ((mc->mc_data = malloc(mc->mc_length, M_DEVBUF, M_NOWAIT)) == NULL) { 2905 error = ENOMEM; 2906 goto out; 2907 } 2908 } 2909 if (uc->DataTransferLength > 0) { 2910 mc->mc_flags |= MLY_CMD_DATAIN; 2911 bzero(mc->mc_data, mc->mc_length); 2912 } 2913 if (uc->DataTransferLength < 0) { 2914 mc->mc_flags |= MLY_CMD_DATAOUT; 2915 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2916 goto out; 2917 } 2918 2919 /* copy the controller command */ 2920 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2921 2922 /* clear command completion handler so that we get woken up */ 2923 mc->mc_complete = NULL; 2924 2925 /* execute the command */ 2926 MLY_LOCK(sc); 2927 if ((error = mly_start(mc)) != 0) { 2928 MLY_UNLOCK(sc); 2929 goto out; 2930 } 2931 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2932 mtx_sleep(mc, &sc->mly_lock, PRIBIO, "mlyioctl", 0); 2933 MLY_UNLOCK(sc); 2934 2935 /* return the data to userspace */ 2936 if (uc->DataTransferLength > 0) 2937 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2938 goto out; 2939 2940 /* return the sense buffer to userspace */ 2941 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2942 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2943 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2944 goto out; 2945 } 2946 2947 /* return command results to userspace (caller will copy out) */ 2948 uc->DataTransferLength = mc->mc_resid; 2949 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2950 uc->CommandStatus = mc->mc_status; 2951 error = 0; 2952 2953 out: 2954 if (mc->mc_data != NULL) 2955 free(mc->mc_data, M_DEVBUF); 2956 MLY_LOCK(sc); 2957 mly_release_command(mc); 2958 MLY_UNLOCK(sc); 2959 return(error); 2960 } 2961 2962 /******************************************************************************** 2963 * Return health status to userspace. If the health change index in the user 2964 * structure does not match that currently exported by the controller, we 2965 * return the current status immediately. Otherwise, we block until either 2966 * interrupted or new status is delivered. 2967 */ 2968 static int 2969 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2970 { 2971 struct mly_health_status mh; 2972 int error; 2973 2974 /* fetch the current health status from userspace */ 2975 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2976 return(error); 2977 2978 /* spin waiting for a status update */ 2979 MLY_LOCK(sc); 2980 error = EWOULDBLOCK; 2981 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2982 error = mtx_sleep(&sc->mly_event_change, &sc->mly_lock, PRIBIO | PCATCH, 2983 "mlyhealth", 0); 2984 mh = sc->mly_mmbox->mmm_health.status; 2985 MLY_UNLOCK(sc); 2986 2987 /* copy the controller's health status buffer out */ 2988 error = copyout(&mh, uh->HealthStatusBuffer, sizeof(mh)); 2989 return(error); 2990 } 2991 2992 #ifdef MLY_DEBUG 2993 static void 2994 mly_timeout(void *arg) 2995 { 2996 struct mly_softc *sc; 2997 struct mly_command *mc; 2998 int deadline; 2999 3000 sc = arg; 3001 MLY_ASSERT_LOCKED(sc); 3002 deadline = time_second - MLY_CMD_TIMEOUT; 3003 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 3004 if ((mc->mc_timestamp < deadline)) { 3005 device_printf(sc->mly_dev, 3006 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 3007 (int)(time_second - mc->mc_timestamp)); 3008 } 3009 } 3010 3011 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, mly_timeout, sc); 3012 } 3013 #endif 3014