1 /*- 2 * Copyright (c) 2000, 2001 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/dev/mly/mly.c,v 1.3.2.3 2001/03/05 20:17:24 msmith Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/device.h> 37 #include <sys/ctype.h> 38 #include <sys/stat.h> 39 #include <sys/rman.h> 40 #include <sys/thread2.h> 41 42 #include <bus/cam/cam.h> 43 #include <bus/cam/cam_ccb.h> 44 #include <bus/cam/cam_periph.h> 45 #include <bus/cam/cam_sim.h> 46 #include <bus/cam/cam_xpt_sim.h> 47 #include <bus/cam/scsi/scsi_all.h> 48 #include <bus/cam/scsi/scsi_message.h> 49 50 #include <bus/pci/pcireg.h> 51 #include <bus/pci/pcivar.h> 52 53 #include "mlyreg.h" 54 #include "mlyio.h" 55 #include "mlyvar.h" 56 #include "mly_tables.h" 57 58 static int mly_probe(device_t dev); 59 static int mly_attach(device_t dev); 60 static int mly_pci_attach(struct mly_softc *sc); 61 static int mly_detach(device_t dev); 62 static int mly_shutdown(device_t dev); 63 static void mly_intr(void *arg); 64 65 static int mly_sg_map(struct mly_softc *sc); 66 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 67 static int mly_mmbox_map(struct mly_softc *sc); 68 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 69 static void mly_free(struct mly_softc *sc); 70 71 static int mly_get_controllerinfo(struct mly_softc *sc); 72 static void mly_scan_devices(struct mly_softc *sc); 73 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 74 static void mly_complete_rescan(struct mly_command *mc); 75 static int mly_get_eventstatus(struct mly_softc *sc); 76 static int mly_enable_mmbox(struct mly_softc *sc); 77 static int mly_flush(struct mly_softc *sc); 78 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 79 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 80 static void mly_check_event(struct mly_softc *sc); 81 static void mly_fetch_event(struct mly_softc *sc); 82 static void mly_complete_event(struct mly_command *mc); 83 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 84 static void mly_periodic(void *data); 85 86 static int mly_immediate_command(struct mly_command *mc); 87 static int mly_start(struct mly_command *mc); 88 static void mly_done(struct mly_softc *sc); 89 static void mly_complete(void *context, int pending); 90 91 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 92 static void mly_release_command(struct mly_command *mc); 93 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 94 static int mly_alloc_commands(struct mly_softc *sc); 95 static void mly_release_commands(struct mly_softc *sc); 96 static void mly_map_command(struct mly_command *mc); 97 static void mly_unmap_command(struct mly_command *mc); 98 99 static int mly_cam_attach(struct mly_softc *sc); 100 static void mly_cam_detach(struct mly_softc *sc); 101 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 102 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 103 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 104 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 105 static void mly_cam_poll(struct cam_sim *sim); 106 static void mly_cam_complete(struct mly_command *mc); 107 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 108 static int mly_name_device(struct mly_softc *sc, int bus, int target); 109 110 static int mly_fwhandshake(struct mly_softc *sc); 111 112 static void mly_describe_controller(struct mly_softc *sc); 113 #ifdef MLY_DEBUG 114 static void mly_printstate(struct mly_softc *sc); 115 static void mly_print_command(struct mly_command *mc); 116 static void mly_print_packet(struct mly_command *mc); 117 static void mly_panic(struct mly_softc *sc, char *reason); 118 static int mly_timeout(struct mly_softc *sc); 119 #endif 120 void mly_print_controller(int controller); 121 122 123 static d_open_t mly_user_open; 124 static d_close_t mly_user_close; 125 static d_ioctl_t mly_user_ioctl; 126 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 127 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 128 129 #define MLY_CMD_TIMEOUT 20 130 131 static device_method_t mly_methods[] = { 132 /* Device interface */ 133 DEVMETHOD(device_probe, mly_probe), 134 DEVMETHOD(device_attach, mly_attach), 135 DEVMETHOD(device_detach, mly_detach), 136 DEVMETHOD(device_shutdown, mly_shutdown), 137 { 0, 0 } 138 }; 139 140 static driver_t mly_pci_driver = { 141 "mly", 142 mly_methods, 143 sizeof(struct mly_softc) 144 }; 145 146 static devclass_t mly_devclass; 147 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 148 149 static struct dev_ops mly_ops = { 150 { "mly", 0, 0 }, 151 .d_open = mly_user_open, 152 .d_close = mly_user_close, 153 .d_ioctl = mly_user_ioctl, 154 }; 155 156 /******************************************************************************** 157 ******************************************************************************** 158 Device Interface 159 ******************************************************************************** 160 ********************************************************************************/ 161 162 static struct mly_ident 163 { 164 u_int16_t vendor; 165 u_int16_t device; 166 u_int16_t subvendor; 167 u_int16_t subdevice; 168 int hwif; 169 char *desc; 170 } mly_identifiers[] = { 171 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 172 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 173 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 174 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 175 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 176 {0, 0, 0, 0, 0, 0} 177 }; 178 179 /******************************************************************************** 180 * Compare the provided PCI device with the list we support. 181 */ 182 static int 183 mly_probe(device_t dev) 184 { 185 struct mly_ident *m; 186 187 debug_called(1); 188 189 for (m = mly_identifiers; m->vendor != 0; m++) { 190 if ((m->vendor == pci_get_vendor(dev)) && 191 (m->device == pci_get_device(dev)) && 192 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 193 (m->subdevice == pci_get_subdevice(dev))))) { 194 195 device_set_desc(dev, m->desc); 196 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 197 } 198 } 199 return(ENXIO); 200 } 201 202 /******************************************************************************** 203 * Initialise the controller and softc 204 */ 205 static int 206 mly_attach(device_t dev) 207 { 208 struct mly_softc *sc = device_get_softc(dev); 209 int error; 210 211 debug_called(1); 212 213 sc->mly_dev = dev; 214 215 #ifdef MLY_DEBUG 216 if (device_get_unit(sc->mly_dev) == 0) 217 mly_softc0 = sc; 218 #endif 219 220 /* 221 * Do PCI-specific initialisation. 222 */ 223 if ((error = mly_pci_attach(sc)) != 0) 224 goto out; 225 226 callout_init(&sc->mly_periodic); 227 callout_init(&sc->mly_timeout); 228 229 /* 230 * Initialise per-controller queues. 231 */ 232 mly_initq_free(sc); 233 mly_initq_busy(sc); 234 mly_initq_complete(sc); 235 236 /* 237 * Initialise command-completion task. 238 */ 239 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 240 241 /* disable interrupts before we start talking to the controller */ 242 MLY_MASK_INTERRUPTS(sc); 243 244 /* 245 * Wait for the controller to come ready, handshake with the firmware if required. 246 * This is typically only necessary on platforms where the controller BIOS does not 247 * run. 248 */ 249 if ((error = mly_fwhandshake(sc))) 250 goto out; 251 252 /* 253 * Allocate initial command buffers. 254 */ 255 if ((error = mly_alloc_commands(sc))) 256 goto out; 257 258 /* 259 * Obtain controller feature information 260 */ 261 if ((error = mly_get_controllerinfo(sc))) 262 goto out; 263 264 /* 265 * Reallocate command buffers now we know how many we want. 266 */ 267 mly_release_commands(sc); 268 if ((error = mly_alloc_commands(sc))) 269 goto out; 270 271 /* 272 * Get the current event counter for health purposes, populate the initial 273 * health status buffer. 274 */ 275 if ((error = mly_get_eventstatus(sc))) 276 goto out; 277 278 /* 279 * Enable memory-mailbox mode. 280 */ 281 if ((error = mly_enable_mmbox(sc))) 282 goto out; 283 284 /* 285 * Attach to CAM. 286 */ 287 if ((error = mly_cam_attach(sc))) 288 goto out; 289 290 /* 291 * Print a little information about the controller 292 */ 293 mly_describe_controller(sc); 294 295 /* 296 * Mark all attached devices for rescan. 297 */ 298 mly_scan_devices(sc); 299 300 /* 301 * Instigate the first status poll immediately. Rescan completions won't 302 * happen until interrupts are enabled, which should still be before 303 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 304 */ 305 mly_periodic((void *)sc); 306 307 /* 308 * Create the control device. 309 */ 310 sc->mly_dev_t = make_dev(&mly_ops, device_get_unit(sc->mly_dev), 311 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 312 "mly%d", device_get_unit(sc->mly_dev)); 313 sc->mly_dev_t->si_drv1 = sc; 314 315 /* enable interrupts now */ 316 MLY_UNMASK_INTERRUPTS(sc); 317 318 #ifdef MLY_DEBUG 319 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 320 (timeout_t *)mly_timeout, sc); 321 #endif 322 323 out: 324 if (error != 0) 325 mly_free(sc); 326 return(error); 327 } 328 329 /******************************************************************************** 330 * Perform PCI-specific initialisation. 331 */ 332 static int 333 mly_pci_attach(struct mly_softc *sc) 334 { 335 int i, error; 336 u_int32_t command; 337 338 debug_called(1); 339 340 /* assume failure is 'not configured' */ 341 error = ENXIO; 342 343 /* 344 * Verify that the adapter is correctly set up in PCI space. 345 * 346 * XXX we shouldn't do this; the PCI code should. 347 */ 348 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 349 command |= PCIM_CMD_BUSMASTEREN; 350 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 351 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 352 if (!(command & PCIM_CMD_BUSMASTEREN)) { 353 mly_printf(sc, "can't enable busmaster feature\n"); 354 goto fail; 355 } 356 if ((command & PCIM_CMD_MEMEN) == 0) { 357 mly_printf(sc, "memory window not available\n"); 358 goto fail; 359 } 360 361 /* 362 * Allocate the PCI register window. 363 */ 364 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 365 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 366 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 367 mly_printf(sc, "can't allocate register window\n"); 368 goto fail; 369 } 370 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 371 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 372 373 /* 374 * Allocate and connect our interrupt. 375 */ 376 sc->mly_irq_rid = 0; 377 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 378 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 379 mly_printf(sc, "can't allocate interrupt\n"); 380 goto fail; 381 } 382 error = bus_setup_intr(sc->mly_dev, sc->mly_irq, 0, 383 mly_intr, sc, &sc->mly_intr, NULL); 384 if (error) { 385 mly_printf(sc, "can't set up interrupt\n"); 386 goto fail; 387 } 388 389 /* assume failure is 'out of memory' */ 390 error = ENOMEM; 391 392 /* 393 * Allocate the parent bus DMA tag appropriate for our PCI interface. 394 * 395 * Note that all of these controllers are 64-bit capable. 396 */ 397 if (bus_dma_tag_create(NULL, /* parent */ 398 1, 0, /* alignment, boundary */ 399 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 400 BUS_SPACE_MAXADDR, /* highaddr */ 401 NULL, NULL, /* filter, filterarg */ 402 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 403 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 404 BUS_DMA_ALLOCNOW, /* flags */ 405 &sc->mly_parent_dmat)) { 406 mly_printf(sc, "can't allocate parent DMA tag\n"); 407 goto fail; 408 } 409 410 /* 411 * Create DMA tag for mapping buffers into controller-addressable space. 412 */ 413 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 414 1, 0, /* alignment, boundary */ 415 BUS_SPACE_MAXADDR, /* lowaddr */ 416 BUS_SPACE_MAXADDR, /* highaddr */ 417 NULL, NULL, /* filter, filterarg */ 418 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 419 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 420 0, /* flags */ 421 &sc->mly_buffer_dmat)) { 422 mly_printf(sc, "can't allocate buffer DMA tag\n"); 423 goto fail; 424 } 425 426 /* 427 * Initialise the DMA tag for command packets. 428 */ 429 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 430 1, 0, /* alignment, boundary */ 431 BUS_SPACE_MAXADDR, /* lowaddr */ 432 BUS_SPACE_MAXADDR, /* highaddr */ 433 NULL, NULL, /* filter, filterarg */ 434 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 435 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 436 BUS_DMA_ALLOCNOW, /* flags */ 437 &sc->mly_packet_dmat)) { 438 mly_printf(sc, "can't allocate command packet DMA tag\n"); 439 goto fail; 440 } 441 442 /* 443 * Detect the hardware interface version 444 */ 445 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 446 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 447 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 448 sc->mly_hwif = mly_identifiers[i].hwif; 449 switch(sc->mly_hwif) { 450 case MLY_HWIF_I960RX: 451 debug(1, "set hardware up for i960RX"); 452 sc->mly_doorbell_true = 0x00; 453 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 454 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 455 sc->mly_idbr = MLY_I960RX_IDBR; 456 sc->mly_odbr = MLY_I960RX_ODBR; 457 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 458 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 459 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 460 break; 461 case MLY_HWIF_STRONGARM: 462 debug(1, "set hardware up for StrongARM"); 463 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 464 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 465 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 466 sc->mly_idbr = MLY_STRONGARM_IDBR; 467 sc->mly_odbr = MLY_STRONGARM_ODBR; 468 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 469 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 470 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 471 break; 472 } 473 break; 474 } 475 } 476 477 /* 478 * Create the scatter/gather mappings. 479 */ 480 if ((error = mly_sg_map(sc))) 481 goto fail; 482 483 /* 484 * Allocate and map the memory mailbox 485 */ 486 if ((error = mly_mmbox_map(sc))) 487 goto fail; 488 489 error = 0; 490 491 fail: 492 return(error); 493 } 494 495 /******************************************************************************** 496 * Shut the controller down and detach all our resources. 497 */ 498 static int 499 mly_detach(device_t dev) 500 { 501 int error; 502 503 if ((error = mly_shutdown(dev)) != 0) 504 return(error); 505 506 mly_free(device_get_softc(dev)); 507 return(0); 508 } 509 510 /******************************************************************************** 511 * Bring the controller to a state where it can be safely left alone. 512 * 513 * Note that it should not be necessary to wait for any outstanding commands, 514 * as they should be completed prior to calling here. 515 * 516 * XXX this applies for I/O, but not status polls; we should beware of 517 * the case where a status command is running while we detach. 518 */ 519 static int 520 mly_shutdown(device_t dev) 521 { 522 struct mly_softc *sc = device_get_softc(dev); 523 524 debug_called(1); 525 526 if (sc->mly_state & MLY_STATE_OPEN) 527 return(EBUSY); 528 529 /* kill the periodic event */ 530 callout_stop(&sc->mly_periodic); 531 532 /* flush controller */ 533 mly_printf(sc, "flushing cache..."); 534 kprintf("%s\n", mly_flush(sc) ? "failed" : "done"); 535 536 MLY_MASK_INTERRUPTS(sc); 537 538 return(0); 539 } 540 541 /******************************************************************************* 542 * Take an interrupt, or be poked by other code to look for interrupt-worthy 543 * status. 544 */ 545 static void 546 mly_intr(void *arg) 547 { 548 struct mly_softc *sc = (struct mly_softc *)arg; 549 550 debug_called(2); 551 552 mly_done(sc); 553 }; 554 555 /******************************************************************************** 556 ******************************************************************************** 557 Bus-dependant Resource Management 558 ******************************************************************************** 559 ********************************************************************************/ 560 561 /******************************************************************************** 562 * Allocate memory for the scatter/gather tables 563 */ 564 static int 565 mly_sg_map(struct mly_softc *sc) 566 { 567 size_t segsize; 568 569 debug_called(1); 570 571 /* 572 * Create a single tag describing a region large enough to hold all of 573 * the s/g lists we will need. 574 */ 575 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 576 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 577 1, 0, /* alignment,boundary */ 578 BUS_SPACE_MAXADDR, /* lowaddr */ 579 BUS_SPACE_MAXADDR, /* highaddr */ 580 NULL, NULL, /* filter, filterarg */ 581 segsize, 1, /* maxsize, nsegments */ 582 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 583 BUS_DMA_ALLOCNOW, /* flags */ 584 &sc->mly_sg_dmat)) { 585 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 586 return(ENOMEM); 587 } 588 589 /* 590 * Allocate enough s/g maps for all commands and permanently map them into 591 * controller-visible space. 592 * 593 * XXX this assumes we can get enough space for all the s/g maps in one 594 * contiguous slab. 595 */ 596 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 597 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 598 mly_printf(sc, "can't allocate s/g table\n"); 599 return(ENOMEM); 600 } 601 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 602 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 603 return (ENOMEM); 604 return(0); 605 } 606 607 /******************************************************************************** 608 * Save the physical address of the base of the s/g table. 609 */ 610 static void 611 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 612 { 613 struct mly_softc *sc = (struct mly_softc *)arg; 614 615 debug_called(1); 616 617 /* save base of s/g table's address in bus space */ 618 sc->mly_sg_busaddr = segs->ds_addr; 619 } 620 621 /******************************************************************************** 622 * Allocate memory for the memory-mailbox interface 623 */ 624 static int 625 mly_mmbox_map(struct mly_softc *sc) 626 { 627 628 /* 629 * Create a DMA tag for a single contiguous region large enough for the 630 * memory mailbox structure. 631 */ 632 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 633 1, 0, /* alignment,boundary */ 634 BUS_SPACE_MAXADDR, /* lowaddr */ 635 BUS_SPACE_MAXADDR, /* highaddr */ 636 NULL, NULL, /* filter, filterarg */ 637 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 638 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 639 BUS_DMA_ALLOCNOW, /* flags */ 640 &sc->mly_mmbox_dmat)) { 641 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 642 return(ENOMEM); 643 } 644 645 /* 646 * Allocate the buffer 647 */ 648 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 649 mly_printf(sc, "can't allocate memory mailbox\n"); 650 return(ENOMEM); 651 } 652 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 653 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 654 BUS_DMA_NOWAIT) != 0) 655 return (ENOMEM); 656 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 657 return(0); 658 659 } 660 661 /******************************************************************************** 662 * Save the physical address of the memory mailbox 663 */ 664 static void 665 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 666 { 667 struct mly_softc *sc = (struct mly_softc *)arg; 668 669 debug_called(1); 670 671 sc->mly_mmbox_busaddr = segs->ds_addr; 672 } 673 674 /******************************************************************************** 675 * Free all of the resources associated with (sc) 676 * 677 * Should not be called if the controller is active. 678 */ 679 static void 680 mly_free(struct mly_softc *sc) 681 { 682 683 debug_called(1); 684 685 /* Remove the management device */ 686 destroy_dev(sc->mly_dev_t); 687 688 /* detach from CAM */ 689 mly_cam_detach(sc); 690 691 /* release command memory */ 692 mly_release_commands(sc); 693 694 /* throw away the controllerinfo structure */ 695 if (sc->mly_controllerinfo != NULL) 696 kfree(sc->mly_controllerinfo, M_DEVBUF); 697 698 /* throw away the controllerparam structure */ 699 if (sc->mly_controllerparam != NULL) 700 kfree(sc->mly_controllerparam, M_DEVBUF); 701 702 /* destroy data-transfer DMA tag */ 703 if (sc->mly_buffer_dmat) 704 bus_dma_tag_destroy(sc->mly_buffer_dmat); 705 706 /* free and destroy DMA memory and tag for s/g lists */ 707 if (sc->mly_sg_table) { 708 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 709 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 710 } 711 if (sc->mly_sg_dmat) 712 bus_dma_tag_destroy(sc->mly_sg_dmat); 713 714 /* free and destroy DMA memory and tag for memory mailbox */ 715 if (sc->mly_mmbox) { 716 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 717 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 718 } 719 if (sc->mly_mmbox_dmat) 720 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 721 722 /* disconnect the interrupt handler */ 723 if (sc->mly_intr) 724 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 725 if (sc->mly_irq != NULL) 726 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 727 728 /* destroy the parent DMA tag */ 729 if (sc->mly_parent_dmat) 730 bus_dma_tag_destroy(sc->mly_parent_dmat); 731 732 /* release the register window mapping */ 733 if (sc->mly_regs_resource != NULL) 734 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 735 } 736 737 /******************************************************************************** 738 ******************************************************************************** 739 Command Wrappers 740 ******************************************************************************** 741 ********************************************************************************/ 742 743 /******************************************************************************** 744 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 745 */ 746 static int 747 mly_get_controllerinfo(struct mly_softc *sc) 748 { 749 struct mly_command_ioctl mci; 750 u_int8_t status; 751 int error; 752 753 debug_called(1); 754 755 if (sc->mly_controllerinfo != NULL) 756 kfree(sc->mly_controllerinfo, M_DEVBUF); 757 758 /* build the getcontrollerinfo ioctl and send it */ 759 bzero(&mci, sizeof(mci)); 760 sc->mly_controllerinfo = NULL; 761 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 762 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 763 &status, NULL, NULL))) 764 return(error); 765 if (status != 0) 766 return(EIO); 767 768 if (sc->mly_controllerparam != NULL) 769 kfree(sc->mly_controllerparam, M_DEVBUF); 770 771 /* build the getcontrollerparameter ioctl and send it */ 772 bzero(&mci, sizeof(mci)); 773 sc->mly_controllerparam = NULL; 774 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 775 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 776 &status, NULL, NULL))) 777 return(error); 778 if (status != 0) 779 return(EIO); 780 781 return(0); 782 } 783 784 /******************************************************************************** 785 * Schedule all possible devices for a rescan. 786 * 787 */ 788 static void 789 mly_scan_devices(struct mly_softc *sc) 790 { 791 int bus, target; 792 793 debug_called(1); 794 795 /* 796 * Clear any previous BTL information. 797 */ 798 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 799 800 /* 801 * Mark all devices as requiring a rescan, and let the next 802 * periodic scan collect them. 803 */ 804 for (bus = 0; bus < sc->mly_cam_channels; bus++) 805 if (MLY_BUS_IS_VALID(sc, bus)) 806 for (target = 0; target < MLY_MAX_TARGETS; target++) 807 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 808 809 } 810 811 /******************************************************************************** 812 * Rescan a device, possibly as a consequence of getting an event which suggests 813 * that it may have changed. 814 * 815 * If we suffer resource starvation, we can abandon the rescan as we'll be 816 * retried. 817 */ 818 static void 819 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 820 { 821 struct mly_command *mc; 822 struct mly_command_ioctl *mci; 823 824 debug_called(1); 825 826 /* check that this bus is valid */ 827 if (!MLY_BUS_IS_VALID(sc, bus)) 828 return; 829 830 /* get a command */ 831 if (mly_alloc_command(sc, &mc)) 832 return; 833 834 /* set up the data buffer */ 835 mc->mc_data = kmalloc(sizeof(union mly_devinfo), M_DEVBUF, M_INTWAIT | M_ZERO); 836 mc->mc_flags |= MLY_CMD_DATAIN; 837 mc->mc_complete = mly_complete_rescan; 838 839 /* 840 * Build the ioctl. 841 */ 842 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 843 mci->opcode = MDACMD_IOCTL; 844 mci->addr.phys.controller = 0; 845 mci->timeout.value = 30; 846 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 847 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 848 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 849 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 850 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 851 debug(1, "logical device %d", mci->addr.log.logdev); 852 } else { 853 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 854 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 855 mci->addr.phys.lun = 0; 856 mci->addr.phys.target = target; 857 mci->addr.phys.channel = bus; 858 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 859 } 860 861 /* 862 * Dispatch the command. If we successfully send the command, clear the rescan 863 * bit. 864 */ 865 if (mly_start(mc) != 0) { 866 mly_release_command(mc); 867 } else { 868 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 869 } 870 } 871 872 /******************************************************************************** 873 * Handle the completion of a rescan operation 874 */ 875 static void 876 mly_complete_rescan(struct mly_command *mc) 877 { 878 struct mly_softc *sc = mc->mc_sc; 879 struct mly_ioctl_getlogdevinfovalid *ldi; 880 struct mly_ioctl_getphysdevinfovalid *pdi; 881 struct mly_command_ioctl *mci; 882 struct mly_btl btl, *btlp; 883 int bus, target, rescan; 884 885 debug_called(1); 886 887 /* 888 * Recover the bus and target from the command. We need these even in 889 * the case where we don't have a useful response. 890 */ 891 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 892 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 893 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 894 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 895 } else { 896 bus = mci->addr.phys.channel; 897 target = mci->addr.phys.target; 898 } 899 /* XXX validate bus/target? */ 900 901 /* the default result is 'no device' */ 902 bzero(&btl, sizeof(btl)); 903 904 /* if the rescan completed OK, we have possibly-new BTL data */ 905 if (mc->mc_status == 0) { 906 if (mc->mc_length == sizeof(*ldi)) { 907 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 908 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 909 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 910 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 911 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 912 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 913 /* XXX what can we do about this? */ 914 } 915 btl.mb_flags = MLY_BTL_LOGICAL; 916 btl.mb_type = ldi->raid_level; 917 btl.mb_state = ldi->state; 918 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 919 mly_describe_code(mly_table_device_type, ldi->raid_level), 920 mly_describe_code(mly_table_device_state, ldi->state)); 921 } else if (mc->mc_length == sizeof(*pdi)) { 922 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 923 if ((pdi->channel != bus) || (pdi->target != target)) { 924 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 925 bus, target, pdi->channel, pdi->target); 926 /* XXX what can we do about this? */ 927 } 928 btl.mb_flags = MLY_BTL_PHYSICAL; 929 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 930 btl.mb_state = pdi->state; 931 btl.mb_speed = pdi->speed; 932 btl.mb_width = pdi->width; 933 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 934 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 935 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 936 mly_describe_code(mly_table_device_state, pdi->state)); 937 } else { 938 mly_printf(sc, "BTL rescan result invalid\n"); 939 } 940 } 941 942 kfree(mc->mc_data, M_DEVBUF); 943 mly_release_command(mc); 944 945 /* 946 * Decide whether we need to rescan the device. 947 */ 948 rescan = 0; 949 950 /* device type changes (usually between 'nothing' and 'something') */ 951 btlp = &sc->mly_btl[bus][target]; 952 if (btl.mb_flags != btlp->mb_flags) { 953 debug(1, "flags changed, rescanning"); 954 rescan = 1; 955 } 956 957 /* XXX other reasons? */ 958 959 /* 960 * Update BTL information. 961 */ 962 *btlp = btl; 963 964 /* 965 * Perform CAM rescan if required. 966 */ 967 if (rescan) 968 mly_cam_rescan_btl(sc, bus, target); 969 } 970 971 /******************************************************************************** 972 * Get the current health status and set the 'next event' counter to suit. 973 */ 974 static int 975 mly_get_eventstatus(struct mly_softc *sc) 976 { 977 struct mly_command_ioctl mci; 978 struct mly_health_status *mh; 979 u_int8_t status; 980 int error; 981 982 /* build the gethealthstatus ioctl and send it */ 983 bzero(&mci, sizeof(mci)); 984 mh = NULL; 985 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 986 987 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 988 return(error); 989 if (status != 0) 990 return(EIO); 991 992 /* get the event counter */ 993 sc->mly_event_change = mh->change_counter; 994 sc->mly_event_waiting = mh->next_event; 995 sc->mly_event_counter = mh->next_event; 996 997 /* save the health status into the memory mailbox */ 998 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 999 1000 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1001 1002 kfree(mh, M_DEVBUF); 1003 return(0); 1004 } 1005 1006 /******************************************************************************** 1007 * Enable the memory mailbox mode. 1008 */ 1009 static int 1010 mly_enable_mmbox(struct mly_softc *sc) 1011 { 1012 struct mly_command_ioctl mci; 1013 u_int8_t *sp, status; 1014 int error; 1015 1016 debug_called(1); 1017 1018 /* build the ioctl and send it */ 1019 bzero(&mci, sizeof(mci)); 1020 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1021 /* set buffer addresses */ 1022 mci.param.setmemorymailbox.command_mailbox_physaddr = 1023 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1024 mci.param.setmemorymailbox.status_mailbox_physaddr = 1025 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1026 mci.param.setmemorymailbox.health_buffer_physaddr = 1027 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1028 1029 /* set buffer sizes - abuse of data_size field is revolting */ 1030 sp = (u_int8_t *)&mci.data_size; 1031 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1032 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1033 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1034 1035 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1036 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1037 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1038 mci.param.setmemorymailbox.health_buffer_physaddr, 1039 mci.param.setmemorymailbox.health_buffer_size); 1040 1041 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1042 return(error); 1043 if (status != 0) 1044 return(EIO); 1045 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1046 debug(1, "memory mailbox active"); 1047 return(0); 1048 } 1049 1050 /******************************************************************************** 1051 * Flush all pending I/O from the controller. 1052 */ 1053 static int 1054 mly_flush(struct mly_softc *sc) 1055 { 1056 struct mly_command_ioctl mci; 1057 u_int8_t status; 1058 int error; 1059 1060 debug_called(1); 1061 1062 /* build the ioctl */ 1063 bzero(&mci, sizeof(mci)); 1064 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1065 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1066 1067 /* pass it off to the controller */ 1068 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1069 return(error); 1070 1071 return((status == 0) ? 0 : EIO); 1072 } 1073 1074 /******************************************************************************** 1075 * Perform an ioctl command. 1076 * 1077 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1078 * the command requires data transfer from the controller, and we will allocate 1079 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1080 * to the controller. 1081 * 1082 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1083 * 1084 * XXX we don't even try to handle the case where datasize > 4k. We should. 1085 */ 1086 static int 1087 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1088 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1089 { 1090 struct mly_command *mc; 1091 struct mly_command_ioctl *mci; 1092 int error; 1093 1094 debug_called(1); 1095 1096 mc = NULL; 1097 if (mly_alloc_command(sc, &mc)) { 1098 error = ENOMEM; 1099 goto out; 1100 } 1101 1102 /* copy the ioctl structure, but save some important fields and then fixup */ 1103 mci = &mc->mc_packet->ioctl; 1104 ioctl->sense_buffer_address = mci->sense_buffer_address; 1105 ioctl->maximum_sense_size = mci->maximum_sense_size; 1106 *mci = *ioctl; 1107 mci->opcode = MDACMD_IOCTL; 1108 mci->timeout.value = 30; 1109 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1110 1111 /* handle the data buffer */ 1112 if (data != NULL) { 1113 if (*data == NULL) { 1114 /* allocate data buffer */ 1115 mc->mc_data = kmalloc(datasize, M_DEVBUF, M_INTWAIT); 1116 mc->mc_flags |= MLY_CMD_DATAIN; 1117 } else { 1118 mc->mc_data = *data; 1119 mc->mc_flags |= MLY_CMD_DATAOUT; 1120 } 1121 mc->mc_length = datasize; 1122 mc->mc_packet->generic.data_size = datasize; 1123 } 1124 1125 /* run the command */ 1126 if ((error = mly_immediate_command(mc))) 1127 goto out; 1128 1129 /* clean up and return any data */ 1130 *status = mc->mc_status; 1131 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1132 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1133 *sense_length = mc->mc_sense; 1134 goto out; 1135 } 1136 1137 /* should we return a data pointer? */ 1138 if ((data != NULL) && (*data == NULL)) 1139 *data = mc->mc_data; 1140 1141 /* command completed OK */ 1142 error = 0; 1143 1144 out: 1145 if (mc != NULL) { 1146 /* do we need to free a data buffer we allocated? */ 1147 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1148 kfree(mc->mc_data, M_DEVBUF); 1149 mly_release_command(mc); 1150 } 1151 return(error); 1152 } 1153 1154 /******************************************************************************** 1155 * Check for event(s) outstanding in the controller. 1156 */ 1157 static void 1158 mly_check_event(struct mly_softc *sc) 1159 { 1160 1161 /* 1162 * The controller may have updated the health status information, 1163 * so check for it here. Note that the counters are all in host memory, 1164 * so this check is very cheap. Also note that we depend on checking on 1165 * completion 1166 */ 1167 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1168 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1169 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1170 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1171 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1172 1173 /* wake up anyone that might be interested in this */ 1174 wakeup(&sc->mly_event_change); 1175 } 1176 if (sc->mly_event_counter != sc->mly_event_waiting) 1177 mly_fetch_event(sc); 1178 } 1179 1180 /******************************************************************************** 1181 * Fetch one event from the controller. 1182 * 1183 * If we fail due to resource starvation, we'll be retried the next time a 1184 * command completes. 1185 */ 1186 static void 1187 mly_fetch_event(struct mly_softc *sc) 1188 { 1189 struct mly_command *mc; 1190 struct mly_command_ioctl *mci; 1191 u_int32_t event; 1192 1193 debug_called(1); 1194 1195 /* get a command */ 1196 if (mly_alloc_command(sc, &mc)) 1197 return; 1198 1199 /* set up the data buffer */ 1200 mc->mc_data = kmalloc(sizeof(struct mly_event), M_DEVBUF, M_INTWAIT|M_ZERO); 1201 mc->mc_length = sizeof(struct mly_event); 1202 mc->mc_flags |= MLY_CMD_DATAIN; 1203 mc->mc_complete = mly_complete_event; 1204 1205 /* 1206 * Get an event number to fetch. It's possible that we've raced with another 1207 * context for the last event, in which case there will be no more events. 1208 */ 1209 crit_enter(); 1210 if (sc->mly_event_counter == sc->mly_event_waiting) { 1211 mly_release_command(mc); 1212 crit_exit(); 1213 return; 1214 } 1215 event = sc->mly_event_counter++; 1216 crit_exit(); 1217 1218 /* 1219 * Build the ioctl. 1220 * 1221 * At this point we are committed to sending this request, as it 1222 * will be the only one constructed for this particular event number. 1223 */ 1224 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1225 mci->opcode = MDACMD_IOCTL; 1226 mci->data_size = sizeof(struct mly_event); 1227 mci->addr.phys.lun = (event >> 16) & 0xff; 1228 mci->addr.phys.target = (event >> 24) & 0xff; 1229 mci->addr.phys.channel = 0; 1230 mci->addr.phys.controller = 0; 1231 mci->timeout.value = 30; 1232 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1233 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1234 mci->param.getevent.sequence_number_low = event & 0xffff; 1235 1236 debug(1, "fetch event %u", event); 1237 1238 /* 1239 * Submit the command. 1240 * 1241 * Note that failure of mly_start() will result in this event never being 1242 * fetched. 1243 */ 1244 if (mly_start(mc) != 0) { 1245 mly_printf(sc, "couldn't fetch event %u\n", event); 1246 mly_release_command(mc); 1247 } 1248 } 1249 1250 /******************************************************************************** 1251 * Handle the completion of an event poll. 1252 */ 1253 static void 1254 mly_complete_event(struct mly_command *mc) 1255 { 1256 struct mly_softc *sc = mc->mc_sc; 1257 struct mly_event *me = (struct mly_event *)mc->mc_data; 1258 1259 debug_called(1); 1260 1261 /* 1262 * If the event was successfully fetched, process it. 1263 */ 1264 if (mc->mc_status == SCSI_STATUS_OK) { 1265 mly_process_event(sc, me); 1266 kfree(me, M_DEVBUF); 1267 } 1268 mly_release_command(mc); 1269 1270 /* 1271 * Check for another event. 1272 */ 1273 mly_check_event(sc); 1274 } 1275 1276 /******************************************************************************** 1277 * Process a controller event. 1278 */ 1279 static void 1280 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1281 { 1282 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1283 char *fp, *tp; 1284 int bus, target, event, class, action; 1285 1286 /* 1287 * Errors can be reported using vendor-unique sense data. In this case, the 1288 * event code will be 0x1c (Request sense data present), the sense key will 1289 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1290 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1291 * and low seven bits of the ASC (low seven bits of the high byte). 1292 */ 1293 if ((me->code == 0x1c) && 1294 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1295 (ssd->add_sense_code & 0x80)) { 1296 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1297 } else { 1298 event = me->code; 1299 } 1300 1301 /* look up event, get codes */ 1302 fp = mly_describe_code(mly_table_event, event); 1303 1304 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1305 1306 /* quiet event? */ 1307 class = fp[0]; 1308 if (isupper(class) && bootverbose) 1309 class = tolower(class); 1310 1311 /* get action code, text string */ 1312 action = fp[1]; 1313 tp = &fp[2]; 1314 1315 /* 1316 * Print some information about the event. 1317 * 1318 * This code uses a table derived from the corresponding portion of the Linux 1319 * driver, and thus the parser is very similar. 1320 */ 1321 switch(class) { 1322 case 'p': /* error on physical device */ 1323 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1324 if (action == 'r') 1325 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1326 break; 1327 case 'l': /* error on logical unit */ 1328 case 'm': /* message about logical unit */ 1329 bus = MLY_LOGDEV_BUS(sc, me->lun); 1330 target = MLY_LOGDEV_TARGET(sc, me->lun); 1331 mly_name_device(sc, bus, target); 1332 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1333 if (action == 'r') 1334 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1335 break; 1336 break; 1337 case 's': /* report of sense data */ 1338 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1339 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1340 (ssd->add_sense_code == 0x04) && 1341 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1342 break; /* ignore NO_SENSE or NOT_READY in one case */ 1343 1344 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1345 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1346 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1347 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1348 if (action == 'r') 1349 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1350 break; 1351 case 'e': 1352 mly_printf(sc, tp, me->target, me->lun); 1353 kprintf("\n"); 1354 break; 1355 case 'c': 1356 mly_printf(sc, "controller %s\n", tp); 1357 break; 1358 case '?': 1359 mly_printf(sc, "%s - %d\n", tp, me->code); 1360 break; 1361 default: /* probably a 'noisy' event being ignored */ 1362 break; 1363 } 1364 } 1365 1366 /******************************************************************************** 1367 * Perform periodic activities. 1368 */ 1369 static void 1370 mly_periodic(void *data) 1371 { 1372 struct mly_softc *sc = (struct mly_softc *)data; 1373 int bus, target; 1374 1375 debug_called(2); 1376 1377 /* 1378 * Scan devices. 1379 */ 1380 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1381 if (MLY_BUS_IS_VALID(sc, bus)) { 1382 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1383 1384 /* ignore the controller in this scan */ 1385 if (target == sc->mly_controllerparam->initiator_id) 1386 continue; 1387 1388 /* perform device rescan? */ 1389 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1390 mly_rescan_btl(sc, bus, target); 1391 } 1392 } 1393 } 1394 1395 /* check for controller events */ 1396 mly_check_event(sc); 1397 1398 /* reschedule ourselves */ 1399 callout_reset(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz, mly_periodic, sc); 1400 } 1401 1402 /******************************************************************************** 1403 ******************************************************************************** 1404 Command Processing 1405 ******************************************************************************** 1406 ********************************************************************************/ 1407 1408 /******************************************************************************** 1409 * Run a command and wait for it to complete. 1410 * 1411 */ 1412 static int 1413 mly_immediate_command(struct mly_command *mc) 1414 { 1415 struct mly_softc *sc = mc->mc_sc; 1416 int error; 1417 1418 debug_called(1); 1419 1420 /* spinning at splcam is ugly, but we're only used during controller init */ 1421 crit_enter(); 1422 if ((error = mly_start(mc))) { 1423 crit_exit(); 1424 return(error); 1425 } 1426 1427 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1428 /* sleep on the command */ 1429 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1430 tsleep(mc, 0, "mlywait", 0); 1431 } 1432 } else { 1433 /* spin and collect status while we do */ 1434 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1435 mly_done(mc->mc_sc); 1436 } 1437 } 1438 crit_exit(); 1439 return(0); 1440 } 1441 1442 /******************************************************************************** 1443 * Deliver a command to the controller. 1444 * 1445 * XXX it would be good to just queue commands that we can't submit immediately 1446 * and send them later, but we probably want a wrapper for that so that 1447 * we don't hang on a failed submission for an immediate command. 1448 */ 1449 static int 1450 mly_start(struct mly_command *mc) 1451 { 1452 struct mly_softc *sc = mc->mc_sc; 1453 union mly_command_packet *pkt; 1454 1455 debug_called(2); 1456 1457 /* 1458 * Set the command up for delivery to the controller. 1459 */ 1460 mly_map_command(mc); 1461 mc->mc_packet->generic.command_id = mc->mc_slot; 1462 1463 #ifdef MLY_DEBUG 1464 mc->mc_timestamp = time_second; 1465 #endif 1466 1467 crit_enter(); 1468 1469 /* 1470 * Do we have to use the hardware mailbox? 1471 */ 1472 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1473 /* 1474 * Check to see if the controller is ready for us. 1475 */ 1476 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1477 crit_exit(); 1478 return(EBUSY); 1479 } 1480 mc->mc_flags |= MLY_CMD_BUSY; 1481 1482 /* 1483 * It's ready, send the command. 1484 */ 1485 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1486 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1487 1488 } else { /* use memory-mailbox mode */ 1489 1490 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1491 1492 /* check to see if the next index is free yet */ 1493 if (pkt->mmbox.flag != 0) { 1494 crit_exit(); 1495 return(EBUSY); 1496 } 1497 mc->mc_flags |= MLY_CMD_BUSY; 1498 1499 /* copy in new command */ 1500 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1501 /* barrier to ensure completion of previous write before we write the flag */ 1502 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1503 BUS_SPACE_BARRIER_WRITE); 1504 /* copy flag last */ 1505 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1506 /* barrier to ensure completion of previous write before we notify the controller */ 1507 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1508 BUS_SPACE_BARRIER_WRITE); 1509 1510 /* signal controller, update index */ 1511 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1512 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1513 } 1514 1515 mly_enqueue_busy(mc); 1516 crit_exit(); 1517 return(0); 1518 } 1519 1520 /******************************************************************************** 1521 * Pick up command status from the controller, schedule a completion event 1522 */ 1523 static void 1524 mly_done(struct mly_softc *sc) 1525 { 1526 struct mly_command *mc; 1527 union mly_status_packet *sp; 1528 u_int16_t slot; 1529 int worked; 1530 1531 crit_enter(); 1532 worked = 0; 1533 1534 /* pick up hardware-mailbox commands */ 1535 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1536 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1537 if (slot < MLY_SLOT_MAX) { 1538 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1539 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1540 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1541 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1542 mly_remove_busy(mc); 1543 mc->mc_flags &= ~MLY_CMD_BUSY; 1544 mly_enqueue_complete(mc); 1545 worked = 1; 1546 } else { 1547 /* slot 0xffff may mean "extremely bogus command" */ 1548 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1549 } 1550 /* unconditionally acknowledge status */ 1551 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1552 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1553 } 1554 1555 /* pick up memory-mailbox commands */ 1556 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1557 for (;;) { 1558 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1559 1560 /* check for more status */ 1561 if (sp->mmbox.flag == 0) 1562 break; 1563 1564 /* get slot number */ 1565 slot = sp->status.command_id; 1566 if (slot < MLY_SLOT_MAX) { 1567 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1568 mc->mc_status = sp->status.status; 1569 mc->mc_sense = sp->status.sense_length; 1570 mc->mc_resid = sp->status.residue; 1571 mly_remove_busy(mc); 1572 mc->mc_flags &= ~MLY_CMD_BUSY; 1573 mly_enqueue_complete(mc); 1574 worked = 1; 1575 } else { 1576 /* slot 0xffff may mean "extremely bogus command" */ 1577 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1578 slot, sc->mly_mmbox_status_index); 1579 } 1580 1581 /* clear and move to next index */ 1582 sp->mmbox.flag = 0; 1583 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1584 } 1585 /* acknowledge that we have collected status value(s) */ 1586 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1587 } 1588 1589 crit_exit(); 1590 if (worked) { 1591 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1592 taskqueue_enqueue(taskqueue_swi, &sc->mly_task_complete); 1593 else 1594 mly_complete(sc, 0); 1595 } 1596 } 1597 1598 /******************************************************************************** 1599 * Process completed commands 1600 */ 1601 static void 1602 mly_complete(void *context, int pending) 1603 { 1604 struct mly_softc *sc = (struct mly_softc *)context; 1605 struct mly_command *mc; 1606 void (* mc_complete)(struct mly_command *mc); 1607 1608 1609 debug_called(2); 1610 1611 /* 1612 * Spin pulling commands off the completed queue and processing them. 1613 */ 1614 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1615 1616 /* 1617 * Free controller resources, mark command complete. 1618 * 1619 * Note that as soon as we mark the command complete, it may be freed 1620 * out from under us, so we need to save the mc_complete field in 1621 * order to later avoid dereferencing mc. (We would not expect to 1622 * have a polling/sleeping consumer with mc_complete != NULL). 1623 */ 1624 mly_unmap_command(mc); 1625 mc_complete = mc->mc_complete; 1626 mc->mc_flags |= MLY_CMD_COMPLETE; 1627 1628 /* 1629 * Call completion handler or wake up sleeping consumer. 1630 */ 1631 if (mc_complete != NULL) { 1632 mc_complete(mc); 1633 } else { 1634 wakeup(mc); 1635 } 1636 } 1637 1638 /* 1639 * XXX if we are deferring commands due to controller-busy status, we should 1640 * retry submitting them here. 1641 */ 1642 } 1643 1644 /******************************************************************************** 1645 ******************************************************************************** 1646 Command Buffer Management 1647 ******************************************************************************** 1648 ********************************************************************************/ 1649 1650 /******************************************************************************** 1651 * Allocate a command. 1652 */ 1653 static int 1654 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1655 { 1656 struct mly_command *mc; 1657 1658 debug_called(3); 1659 1660 if ((mc = mly_dequeue_free(sc)) == NULL) 1661 return(ENOMEM); 1662 1663 *mcp = mc; 1664 return(0); 1665 } 1666 1667 /******************************************************************************** 1668 * Release a command back to the freelist. 1669 */ 1670 static void 1671 mly_release_command(struct mly_command *mc) 1672 { 1673 debug_called(3); 1674 1675 /* 1676 * Fill in parts of the command that may cause confusion if 1677 * a consumer doesn't when we are later allocated. 1678 */ 1679 mc->mc_data = NULL; 1680 mc->mc_flags = 0; 1681 mc->mc_complete = NULL; 1682 mc->mc_private = NULL; 1683 1684 /* 1685 * By default, we set up to overwrite the command packet with 1686 * sense information. 1687 */ 1688 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1689 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1690 1691 mly_enqueue_free(mc); 1692 } 1693 1694 /******************************************************************************** 1695 * Map helper for command allocation. 1696 */ 1697 static void 1698 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1699 { 1700 struct mly_softc *sc = (struct mly_softc *)arg; 1701 1702 debug_called(1); 1703 1704 sc->mly_packetphys = segs[0].ds_addr; 1705 } 1706 1707 /******************************************************************************** 1708 * Allocate and initialise command and packet structures. 1709 * 1710 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1711 * allocation to that number. If we don't yet know how many commands the 1712 * controller supports, allocate a very small set (suitable for initialisation 1713 * purposes only). 1714 */ 1715 static int 1716 mly_alloc_commands(struct mly_softc *sc) 1717 { 1718 struct mly_command *mc; 1719 int i, ncmd; 1720 1721 if (sc->mly_controllerinfo == NULL) { 1722 ncmd = 4; 1723 } else { 1724 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1725 } 1726 1727 /* 1728 * Allocate enough space for all the command packets in one chunk and 1729 * map them permanently into controller-visible space. 1730 */ 1731 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1732 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1733 return(ENOMEM); 1734 } 1735 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1736 ncmd * sizeof(union mly_command_packet), 1737 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1738 return (ENOMEM); 1739 1740 for (i = 0; i < ncmd; i++) { 1741 mc = &sc->mly_command[i]; 1742 bzero(mc, sizeof(*mc)); 1743 mc->mc_sc = sc; 1744 mc->mc_slot = MLY_SLOT_START + i; 1745 mc->mc_packet = sc->mly_packet + i; 1746 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1747 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1748 mly_release_command(mc); 1749 } 1750 return(0); 1751 } 1752 1753 /******************************************************************************** 1754 * Free all the storage held by commands. 1755 * 1756 * Must be called with all commands on the free list. 1757 */ 1758 static void 1759 mly_release_commands(struct mly_softc *sc) 1760 { 1761 struct mly_command *mc; 1762 1763 /* throw away command buffer DMA maps */ 1764 while (mly_alloc_command(sc, &mc) == 0) 1765 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1766 1767 /* release the packet storage */ 1768 if (sc->mly_packet != NULL) { 1769 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1770 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1771 sc->mly_packet = NULL; 1772 } 1773 } 1774 1775 1776 /******************************************************************************** 1777 * Command-mapping helper function - populate this command's s/g table 1778 * with the s/g entries for its data. 1779 */ 1780 static void 1781 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1782 { 1783 struct mly_command *mc = (struct mly_command *)arg; 1784 struct mly_softc *sc = mc->mc_sc; 1785 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1786 struct mly_sg_entry *sg; 1787 int i, tabofs; 1788 1789 debug_called(2); 1790 1791 /* can we use the transfer structure directly? */ 1792 if (nseg <= 2) { 1793 sg = &gen->transfer.direct.sg[0]; 1794 gen->command_control.extended_sg_table = 0; 1795 } else { 1796 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1797 sg = sc->mly_sg_table + tabofs; 1798 gen->transfer.indirect.entries[0] = nseg; 1799 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1800 gen->command_control.extended_sg_table = 1; 1801 } 1802 1803 /* copy the s/g table */ 1804 for (i = 0; i < nseg; i++) { 1805 sg[i].physaddr = segs[i].ds_addr; 1806 sg[i].length = segs[i].ds_len; 1807 } 1808 1809 } 1810 1811 #if 0 1812 /******************************************************************************** 1813 * Command-mapping helper function - save the cdb's physical address. 1814 * 1815 * We don't support 'large' SCSI commands at this time, so this is unused. 1816 */ 1817 static void 1818 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1819 { 1820 struct mly_command *mc = (struct mly_command *)arg; 1821 1822 debug_called(2); 1823 1824 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1825 if ((segs[0].ds_addr % PAGE_SIZE) > 1826 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1827 panic("cdb crosses page boundary"); 1828 1829 /* fix up fields in the command packet */ 1830 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1831 } 1832 #endif 1833 1834 /******************************************************************************** 1835 * Map a command into controller-visible space 1836 */ 1837 static void 1838 mly_map_command(struct mly_command *mc) 1839 { 1840 struct mly_softc *sc = mc->mc_sc; 1841 1842 debug_called(2); 1843 1844 /* don't map more than once */ 1845 if (mc->mc_flags & MLY_CMD_MAPPED) 1846 return; 1847 1848 /* does the command have a data buffer? */ 1849 if (mc->mc_data != NULL) { 1850 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1851 mly_map_command_sg, mc, 0); 1852 1853 if (mc->mc_flags & MLY_CMD_DATAIN) 1854 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1855 if (mc->mc_flags & MLY_CMD_DATAOUT) 1856 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1857 } 1858 mc->mc_flags |= MLY_CMD_MAPPED; 1859 } 1860 1861 /******************************************************************************** 1862 * Unmap a command from controller-visible space 1863 */ 1864 static void 1865 mly_unmap_command(struct mly_command *mc) 1866 { 1867 struct mly_softc *sc = mc->mc_sc; 1868 1869 debug_called(2); 1870 1871 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1872 return; 1873 1874 /* does the command have a data buffer? */ 1875 if (mc->mc_data != NULL) { 1876 if (mc->mc_flags & MLY_CMD_DATAIN) 1877 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1878 if (mc->mc_flags & MLY_CMD_DATAOUT) 1879 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1880 1881 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1882 } 1883 mc->mc_flags &= ~MLY_CMD_MAPPED; 1884 } 1885 1886 1887 /******************************************************************************** 1888 ******************************************************************************** 1889 CAM interface 1890 ******************************************************************************** 1891 ********************************************************************************/ 1892 1893 /******************************************************************************** 1894 * Attach the physical and virtual SCSI busses to CAM. 1895 * 1896 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1897 * than the highest physical bus. Physical busses are only registered if 1898 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1899 * 1900 * When we refer to a "bus", we are referring to the bus number registered with 1901 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1902 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1903 * interchangeably. 1904 */ 1905 static int 1906 mly_cam_attach(struct mly_softc *sc) 1907 { 1908 struct cam_devq *devq; 1909 int chn, i; 1910 1911 debug_called(1); 1912 1913 /* 1914 * Allocate a devq for all our channels combined. 1915 */ 1916 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1917 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1918 return(ENOMEM); 1919 } 1920 1921 /* 1922 * If physical channel registration has been requested, register these first. 1923 * Note that we enable tagged command queueing for physical channels. 1924 */ 1925 if (ktestenv("hw.mly.register_physical_channels")) { 1926 chn = 0; 1927 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1928 1929 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1930 device_get_unit(sc->mly_dev), 1931 &sim_mplock, 1932 sc->mly_controllerinfo->maximum_parallel_commands, 1933 1, devq)) == NULL) { 1934 return(ENOMEM); 1935 } 1936 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1937 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1938 return(ENXIO); 1939 } 1940 debug(1, "registered physical channel %d", chn); 1941 } 1942 } 1943 1944 /* 1945 * Register our virtual channels, with bus numbers matching channel numbers. 1946 */ 1947 chn = sc->mly_controllerinfo->physical_channels_present; 1948 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1949 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1950 device_get_unit(sc->mly_dev), 1951 &sim_mplock, 1952 sc->mly_controllerinfo->maximum_parallel_commands, 1953 0, devq)) == NULL) { 1954 return(ENOMEM); 1955 } 1956 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1957 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1958 return(ENXIO); 1959 } 1960 debug(1, "registered virtual channel %d", chn); 1961 } 1962 1963 /* 1964 * This is the total number of channels that (might have been) registered with 1965 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1966 */ 1967 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1968 sc->mly_controllerinfo->virtual_channels_present; 1969 1970 return(0); 1971 } 1972 1973 /******************************************************************************** 1974 * Detach from CAM 1975 */ 1976 static void 1977 mly_cam_detach(struct mly_softc *sc) 1978 { 1979 int i; 1980 1981 debug_called(1); 1982 1983 for (i = 0; i < sc->mly_cam_channels; i++) { 1984 if (sc->mly_cam_sim[i] != NULL) { 1985 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 1986 cam_sim_free(sc->mly_cam_sim[i]); 1987 } 1988 } 1989 if (sc->mly_cam_devq != NULL) 1990 cam_simq_release(sc->mly_cam_devq); 1991 } 1992 1993 /************************************************************************ 1994 * Rescan a device. 1995 */ 1996 static void 1997 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 1998 { 1999 union ccb *ccb; 2000 2001 debug_called(1); 2002 2003 ccb = kmalloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO); 2004 2005 if (xpt_create_path(&sc->mly_cam_path, xpt_periph, 2006 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2007 mly_printf(sc, "rescan failed (can't create path)\n"); 2008 kfree(ccb, M_TEMP); 2009 return; 2010 } 2011 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/); 2012 ccb->ccb_h.func_code = XPT_SCAN_LUN; 2013 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback; 2014 ccb->crcn.flags = CAM_FLAG_NONE; 2015 debug(1, "rescan target %d:%d", bus, target); 2016 xpt_action(ccb); 2017 } 2018 2019 static void 2020 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2021 { 2022 kfree(ccb, M_TEMP); 2023 } 2024 2025 /******************************************************************************** 2026 * Handle an action requested by CAM 2027 */ 2028 static void 2029 mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2030 { 2031 struct mly_softc *sc = cam_sim_softc(sim); 2032 2033 debug_called(2); 2034 2035 switch (ccb->ccb_h.func_code) { 2036 2037 /* perform SCSI I/O */ 2038 case XPT_SCSI_IO: 2039 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2040 return; 2041 break; 2042 2043 /* perform geometry calculations */ 2044 case XPT_CALC_GEOMETRY: 2045 { 2046 struct ccb_calc_geometry *ccg = &ccb->ccg; 2047 u_int32_t secs_per_cylinder; 2048 2049 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2050 2051 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2052 ccg->heads = 255; 2053 ccg->secs_per_track = 63; 2054 } else { /* MLY_BIOSGEOM_2G */ 2055 ccg->heads = 128; 2056 ccg->secs_per_track = 32; 2057 } 2058 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2059 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2060 ccb->ccb_h.status = CAM_REQ_CMP; 2061 break; 2062 } 2063 2064 /* handle path attribute inquiry */ 2065 case XPT_PATH_INQ: 2066 { 2067 struct ccb_pathinq *cpi = &ccb->cpi; 2068 2069 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2070 2071 cpi->version_num = 1; 2072 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2073 cpi->target_sprt = 0; 2074 cpi->hba_misc = 0; 2075 cpi->max_target = MLY_MAX_TARGETS - 1; 2076 cpi->max_lun = MLY_MAX_LUNS - 1; 2077 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2078 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2079 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 2080 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2081 cpi->unit_number = cam_sim_unit(sim); 2082 cpi->bus_id = cam_sim_bus(sim); 2083 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2084 cpi->transport = XPORT_SPI; 2085 cpi->transport_version = 2; 2086 cpi->protocol = PROTO_SCSI; 2087 cpi->protocol_version = SCSI_REV_2; 2088 ccb->ccb_h.status = CAM_REQ_CMP; 2089 break; 2090 } 2091 2092 case XPT_GET_TRAN_SETTINGS: 2093 { 2094 struct ccb_trans_settings *cts = &ccb->cts; 2095 int bus, target; 2096 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2097 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2098 2099 cts->protocol = PROTO_SCSI; 2100 cts->protocol_version = SCSI_REV_2; 2101 cts->transport = XPORT_SPI; 2102 cts->transport_version = 2; 2103 2104 scsi->flags = 0; 2105 scsi->valid = 0; 2106 spi->flags = 0; 2107 spi->valid = 0; 2108 2109 bus = cam_sim_bus(sim); 2110 target = cts->ccb_h.target_id; 2111 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2112 /* logical device? */ 2113 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2114 /* nothing special for these */ 2115 /* physical device? */ 2116 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2117 /* allow CAM to try tagged transactions */ 2118 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2119 scsi->valid |= CTS_SCSI_VALID_TQ; 2120 2121 /* convert speed (MHz) to usec */ 2122 if (sc->mly_btl[bus][target].mb_speed == 0) { 2123 spi->sync_period = 1000000 / 5; 2124 } else { 2125 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2126 } 2127 2128 /* convert bus width to CAM internal encoding */ 2129 switch (sc->mly_btl[bus][target].mb_width) { 2130 case 32: 2131 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2132 break; 2133 case 16: 2134 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2135 break; 2136 case 8: 2137 default: 2138 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2139 break; 2140 } 2141 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2142 2143 /* not a device, bail out */ 2144 } else { 2145 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2146 break; 2147 } 2148 2149 /* disconnect always OK */ 2150 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2151 spi->valid |= CTS_SPI_VALID_DISC; 2152 2153 cts->ccb_h.status = CAM_REQ_CMP; 2154 break; 2155 } 2156 2157 default: /* we can't do this */ 2158 debug(2, "unsupported func_code = 0x%x", ccb->ccb_h.func_code); 2159 ccb->ccb_h.status = CAM_REQ_INVALID; 2160 break; 2161 } 2162 2163 xpt_done(ccb); 2164 } 2165 2166 /******************************************************************************** 2167 * Handle an I/O operation requested by CAM 2168 */ 2169 static int 2170 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2171 { 2172 struct mly_softc *sc = cam_sim_softc(sim); 2173 struct mly_command *mc; 2174 struct mly_command_scsi_small *ss; 2175 int bus, target; 2176 int error; 2177 2178 bus = cam_sim_bus(sim); 2179 target = csio->ccb_h.target_id; 2180 2181 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2182 2183 /* validate bus number */ 2184 if (!MLY_BUS_IS_VALID(sc, bus)) { 2185 debug(0, " invalid bus %d", bus); 2186 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2187 } 2188 2189 /* check for I/O attempt to a protected device */ 2190 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2191 debug(2, " device protected"); 2192 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2193 } 2194 2195 /* check for I/O attempt to nonexistent device */ 2196 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2197 debug(2, " device %d:%d does not exist", bus, target); 2198 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2199 } 2200 2201 /* XXX increase if/when we support large SCSI commands */ 2202 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2203 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2204 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2205 } 2206 2207 /* check that the CDB pointer is not to a physical address */ 2208 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2209 debug(0, " CDB pointer is to physical address"); 2210 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2211 } 2212 2213 /* if there is data transfer, it must be to/from a virtual address */ 2214 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2215 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2216 debug(0, " data pointer is to physical address"); 2217 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2218 } 2219 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2220 debug(0, " data has premature s/g setup"); 2221 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2222 } 2223 } 2224 2225 /* abandon aborted ccbs or those that have failed validation */ 2226 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2227 debug(2, "abandoning CCB due to abort/validation failure"); 2228 return(EINVAL); 2229 } 2230 2231 /* 2232 * Get a command, or push the ccb back to CAM and freeze the queue. 2233 */ 2234 if ((error = mly_alloc_command(sc, &mc))) { 2235 crit_enter(); 2236 xpt_freeze_simq(sim, 1); 2237 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2238 sc->mly_qfrzn_cnt++; 2239 crit_exit(); 2240 return(error); 2241 } 2242 2243 /* build the command */ 2244 mc->mc_data = csio->data_ptr; 2245 mc->mc_length = csio->dxfer_len; 2246 mc->mc_complete = mly_cam_complete; 2247 mc->mc_private = csio; 2248 2249 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2250 csio->ccb_h.sim_priv.entries[0].field = bus; 2251 2252 /* build the packet for the controller */ 2253 ss = &mc->mc_packet->scsi_small; 2254 ss->opcode = MDACMD_SCSI; 2255 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2256 ss->command_control.disable_disconnect = 1; 2257 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2258 ss->command_control.data_direction = MLY_CCB_WRITE; 2259 ss->data_size = csio->dxfer_len; 2260 ss->addr.phys.lun = csio->ccb_h.target_lun; 2261 ss->addr.phys.target = csio->ccb_h.target_id; 2262 ss->addr.phys.channel = bus; 2263 if (csio->ccb_h.timeout < (60 * 1000)) { 2264 ss->timeout.value = csio->ccb_h.timeout / 1000; 2265 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2266 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2267 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2268 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2269 } else { 2270 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2271 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2272 } 2273 ss->maximum_sense_size = csio->sense_len; 2274 ss->cdb_length = csio->cdb_len; 2275 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2276 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2277 } else { 2278 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2279 } 2280 2281 /* give the command to the controller */ 2282 if ((error = mly_start(mc))) { 2283 crit_enter(); 2284 xpt_freeze_simq(sim, 1); 2285 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2286 sc->mly_qfrzn_cnt++; 2287 crit_exit(); 2288 return(error); 2289 } 2290 2291 return(0); 2292 } 2293 2294 /******************************************************************************** 2295 * Check for possibly-completed commands. 2296 */ 2297 static void 2298 mly_cam_poll(struct cam_sim *sim) 2299 { 2300 struct mly_softc *sc = cam_sim_softc(sim); 2301 2302 debug_called(2); 2303 2304 mly_done(sc); 2305 } 2306 2307 /******************************************************************************** 2308 * Handle completion of a command - pass results back through the CCB 2309 */ 2310 static void 2311 mly_cam_complete(struct mly_command *mc) 2312 { 2313 struct mly_softc *sc = mc->mc_sc; 2314 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2315 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2316 struct mly_btl *btl; 2317 u_int8_t cmd; 2318 int bus, target; 2319 2320 debug_called(2); 2321 2322 csio->scsi_status = mc->mc_status; 2323 switch(mc->mc_status) { 2324 case SCSI_STATUS_OK: 2325 /* 2326 * In order to report logical device type and status, we overwrite 2327 * the result of the INQUIRY command to logical devices. 2328 */ 2329 bus = csio->ccb_h.sim_priv.entries[0].field; 2330 target = csio->ccb_h.target_id; 2331 /* XXX validate bus/target? */ 2332 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2333 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2334 cmd = *csio->cdb_io.cdb_ptr; 2335 } else { 2336 cmd = csio->cdb_io.cdb_bytes[0]; 2337 } 2338 if (cmd == INQUIRY) { 2339 btl = &sc->mly_btl[bus][target]; 2340 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2341 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2342 padstr(inq->revision, "", 4); 2343 } 2344 } 2345 2346 debug(2, "SCSI_STATUS_OK"); 2347 csio->ccb_h.status = CAM_REQ_CMP; 2348 break; 2349 2350 case SCSI_STATUS_CHECK_COND: 2351 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2352 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2353 bzero(&csio->sense_data, SSD_FULL_SIZE); 2354 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2355 csio->sense_len = mc->mc_sense; 2356 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2357 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2358 break; 2359 2360 case SCSI_STATUS_BUSY: 2361 debug(1, "SCSI_STATUS_BUSY"); 2362 csio->ccb_h.status = CAM_SCSI_BUSY; 2363 break; 2364 2365 default: 2366 debug(1, "unknown status 0x%x", csio->scsi_status); 2367 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2368 break; 2369 } 2370 2371 crit_enter(); 2372 if (sc->mly_qfrzn_cnt) { 2373 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2374 sc->mly_qfrzn_cnt--; 2375 } 2376 crit_exit(); 2377 2378 xpt_done((union ccb *)csio); 2379 mly_release_command(mc); 2380 } 2381 2382 /******************************************************************************** 2383 * Find a peripheral attahed at (bus),(target) 2384 */ 2385 static struct cam_periph * 2386 mly_find_periph(struct mly_softc *sc, int bus, int target) 2387 { 2388 struct cam_periph *periph; 2389 struct cam_path *path; 2390 int status; 2391 2392 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2393 if (status == CAM_REQ_CMP) { 2394 periph = cam_periph_find(path, NULL); 2395 xpt_free_path(path); 2396 } else { 2397 periph = NULL; 2398 } 2399 return(periph); 2400 } 2401 2402 /******************************************************************************** 2403 * Name the device at (bus)(target) 2404 */ 2405 static int 2406 mly_name_device(struct mly_softc *sc, int bus, int target) 2407 { 2408 struct cam_periph *periph; 2409 2410 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2411 ksprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2412 return(0); 2413 } 2414 sc->mly_btl[bus][target].mb_name[0] = 0; 2415 return(ENOENT); 2416 } 2417 2418 /******************************************************************************** 2419 ******************************************************************************** 2420 Hardware Control 2421 ******************************************************************************** 2422 ********************************************************************************/ 2423 2424 /******************************************************************************** 2425 * Handshake with the firmware while the card is being initialised. 2426 */ 2427 static int 2428 mly_fwhandshake(struct mly_softc *sc) 2429 { 2430 u_int8_t error, param0, param1; 2431 int spinup = 0; 2432 2433 debug_called(1); 2434 2435 /* set HM_STSACK and let the firmware initialise */ 2436 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2437 DELAY(1000); /* too short? */ 2438 2439 /* if HM_STSACK is still true, the controller is initialising */ 2440 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2441 return(0); 2442 mly_printf(sc, "controller initialisation started\n"); 2443 2444 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2445 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2446 /* check for a message */ 2447 if (MLY_ERROR_VALID(sc)) { 2448 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2449 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2450 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2451 2452 switch(error) { 2453 case MLY_MSG_SPINUP: 2454 if (!spinup) { 2455 mly_printf(sc, "drive spinup in progress\n"); 2456 spinup = 1; /* only print this once (should print drive being spun?) */ 2457 } 2458 break; 2459 case MLY_MSG_RACE_RECOVERY_FAIL: 2460 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2461 break; 2462 case MLY_MSG_RACE_IN_PROGRESS: 2463 mly_printf(sc, "mirror race recovery in progress\n"); 2464 break; 2465 case MLY_MSG_RACE_ON_CRITICAL: 2466 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2467 break; 2468 case MLY_MSG_PARITY_ERROR: 2469 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2470 return(ENXIO); 2471 default: 2472 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2473 } 2474 } 2475 } 2476 return(0); 2477 } 2478 2479 /******************************************************************************** 2480 ******************************************************************************** 2481 Debugging and Diagnostics 2482 ******************************************************************************** 2483 ********************************************************************************/ 2484 2485 /******************************************************************************** 2486 * Print some information about the controller. 2487 */ 2488 static void 2489 mly_describe_controller(struct mly_softc *sc) 2490 { 2491 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2492 2493 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2494 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2495 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2496 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2497 mi->memory_size); 2498 2499 if (bootverbose) { 2500 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2501 mly_describe_code(mly_table_oemname, mi->oem_information), 2502 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2503 mi->interface_speed, mi->interface_width, mi->interface_name); 2504 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2505 mi->memory_size, mi->memory_speed, mi->memory_width, 2506 mly_describe_code(mly_table_memorytype, mi->memory_type), 2507 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2508 mi->cache_size); 2509 mly_printf(sc, "CPU: %s @ %dMHZ\n", 2510 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2511 if (mi->l2cache_size != 0) 2512 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2513 if (mi->exmemory_size != 0) 2514 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2515 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2516 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2517 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2518 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2519 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2520 mi->maximum_block_count, mi->maximum_sg_entries); 2521 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2522 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2523 mly_printf(sc, "physical devices present %d\n", 2524 mi->physical_devices_present); 2525 mly_printf(sc, "physical disks present/offline %d/%d\n", 2526 mi->physical_disks_present, mi->physical_disks_offline); 2527 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2528 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2529 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2530 mi->virtual_channels_possible); 2531 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2532 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2533 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2534 } 2535 } 2536 2537 #ifdef MLY_DEBUG 2538 /******************************************************************************** 2539 * Print some controller state 2540 */ 2541 static void 2542 mly_printstate(struct mly_softc *sc) 2543 { 2544 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2545 MLY_GET_REG(sc, sc->mly_idbr), 2546 MLY_GET_REG(sc, sc->mly_odbr), 2547 MLY_GET_REG(sc, sc->mly_error_status), 2548 sc->mly_idbr, 2549 sc->mly_odbr, 2550 sc->mly_error_status); 2551 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2552 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2553 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2554 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2555 MLY_GET_REG(sc, sc->mly_command_mailbox), 2556 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2557 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2558 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2559 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2560 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2561 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2562 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2563 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2564 MLY_GET_REG(sc, sc->mly_status_mailbox), 2565 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2566 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2567 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2568 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2569 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2570 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2571 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2572 mly_printf(sc, " %04x %08x\n", 2573 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2574 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2575 } 2576 2577 struct mly_softc *mly_softc0 = NULL; 2578 void 2579 mly_printstate0(void) 2580 { 2581 if (mly_softc0 != NULL) 2582 mly_printstate(mly_softc0); 2583 } 2584 2585 /******************************************************************************** 2586 * Print a command 2587 */ 2588 static void 2589 mly_print_command(struct mly_command *mc) 2590 { 2591 struct mly_softc *sc = mc->mc_sc; 2592 2593 mly_printf(sc, "COMMAND @ %p\n", mc); 2594 mly_printf(sc, " slot %d\n", mc->mc_slot); 2595 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2596 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2597 mly_printf(sc, " resid %d\n", mc->mc_resid); 2598 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2599 if (mc->mc_packet != NULL) 2600 mly_print_packet(mc); 2601 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2602 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2603 mly_printf(sc, " complete %p\n", mc->mc_complete); 2604 mly_printf(sc, " private %p\n", mc->mc_private); 2605 } 2606 2607 /******************************************************************************** 2608 * Print a command packet 2609 */ 2610 static void 2611 mly_print_packet(struct mly_command *mc) 2612 { 2613 struct mly_softc *sc = mc->mc_sc; 2614 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2615 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2616 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2617 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2618 int transfer; 2619 2620 mly_printf(sc, " command_id %d\n", ge->command_id); 2621 mly_printf(sc, " opcode %d\n", ge->opcode); 2622 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2623 ge->command_control.force_unit_access, 2624 ge->command_control.disable_page_out, 2625 ge->command_control.extended_sg_table, 2626 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2627 ge->command_control.no_auto_sense, 2628 ge->command_control.disable_disconnect); 2629 mly_printf(sc, " data_size %d\n", ge->data_size); 2630 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2631 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2632 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2633 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2634 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2635 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2636 mly_printf(sc, " timeout %d %s\n", 2637 ge->timeout.value, 2638 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2639 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2640 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2641 switch(ge->opcode) { 2642 case MDACMD_SCSIPT: 2643 case MDACMD_SCSI: 2644 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2645 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2646 transfer = 1; 2647 break; 2648 case MDACMD_SCSILC: 2649 case MDACMD_SCSILCPT: 2650 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2651 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2652 transfer = 1; 2653 break; 2654 case MDACMD_IOCTL: 2655 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2656 switch(io->sub_ioctl) { 2657 case MDACIOCTL_SETMEMORYMAILBOX: 2658 mly_printf(sc, " health_buffer_size %d\n", 2659 io->param.setmemorymailbox.health_buffer_size); 2660 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2661 io->param.setmemorymailbox.health_buffer_physaddr); 2662 mly_printf(sc, " command_mailbox 0x%llx\n", 2663 io->param.setmemorymailbox.command_mailbox_physaddr); 2664 mly_printf(sc, " status_mailbox 0x%llx\n", 2665 io->param.setmemorymailbox.status_mailbox_physaddr); 2666 transfer = 0; 2667 break; 2668 2669 case MDACIOCTL_SETREALTIMECLOCK: 2670 case MDACIOCTL_GETHEALTHSTATUS: 2671 case MDACIOCTL_GETCONTROLLERINFO: 2672 case MDACIOCTL_GETLOGDEVINFOVALID: 2673 case MDACIOCTL_GETPHYSDEVINFOVALID: 2674 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2675 case MDACIOCTL_GETLOGDEVSTATISTICS: 2676 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2677 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2678 case MDACIOCTL_CREATENEWCONF: 2679 case MDACIOCTL_ADDNEWCONF: 2680 case MDACIOCTL_GETDEVCONFINFO: 2681 case MDACIOCTL_GETFREESPACELIST: 2682 case MDACIOCTL_MORE: 2683 case MDACIOCTL_SETPHYSDEVPARAMETER: 2684 case MDACIOCTL_GETPHYSDEVPARAMETER: 2685 case MDACIOCTL_GETLOGDEVPARAMETER: 2686 case MDACIOCTL_SETLOGDEVPARAMETER: 2687 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2688 transfer = 1; 2689 break; 2690 2691 case MDACIOCTL_GETEVENT: 2692 mly_printf(sc, " event %d\n", 2693 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2694 transfer = 1; 2695 break; 2696 2697 case MDACIOCTL_SETRAIDDEVSTATE: 2698 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2699 transfer = 0; 2700 break; 2701 2702 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2703 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2704 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2705 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2706 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2707 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2708 transfer = 0; 2709 break; 2710 2711 case MDACIOCTL_GETGROUPCONFINFO: 2712 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2713 transfer = 1; 2714 break; 2715 2716 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2717 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2718 case MDACIOCTL_STARTDISOCVERY: 2719 case MDACIOCTL_INITPHYSDEVSTART: 2720 case MDACIOCTL_INITPHYSDEVSTOP: 2721 case MDACIOCTL_INITRAIDDEVSTART: 2722 case MDACIOCTL_INITRAIDDEVSTOP: 2723 case MDACIOCTL_REBUILDRAIDDEVSTART: 2724 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2725 case MDACIOCTL_MAKECONSISTENTDATASTART: 2726 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2727 case MDACIOCTL_CONSISTENCYCHECKSTART: 2728 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2729 case MDACIOCTL_RESETDEVICE: 2730 case MDACIOCTL_FLUSHDEVICEDATA: 2731 case MDACIOCTL_PAUSEDEVICE: 2732 case MDACIOCTL_UNPAUSEDEVICE: 2733 case MDACIOCTL_LOCATEDEVICE: 2734 case MDACIOCTL_SETMASTERSLAVEMODE: 2735 case MDACIOCTL_DELETERAIDDEV: 2736 case MDACIOCTL_REPLACEINTERNALDEV: 2737 case MDACIOCTL_CLEARCONF: 2738 case MDACIOCTL_GETCONTROLLERPARAMETER: 2739 case MDACIOCTL_SETCONTRLLERPARAMETER: 2740 case MDACIOCTL_CLEARCONFSUSPMODE: 2741 case MDACIOCTL_STOREIMAGE: 2742 case MDACIOCTL_READIMAGE: 2743 case MDACIOCTL_FLASHIMAGES: 2744 case MDACIOCTL_RENAMERAIDDEV: 2745 default: /* no idea what to print */ 2746 transfer = 0; 2747 break; 2748 } 2749 break; 2750 2751 case MDACMD_IOCTLCHECK: 2752 case MDACMD_MEMCOPY: 2753 default: 2754 transfer = 0; 2755 break; /* print nothing */ 2756 } 2757 if (transfer) { 2758 if (ge->command_control.extended_sg_table) { 2759 mly_printf(sc, " sg table 0x%llx/%d\n", 2760 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2761 } else { 2762 mly_printf(sc, " 0000 0x%llx/%lld\n", 2763 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2764 mly_printf(sc, " 0001 0x%llx/%lld\n", 2765 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2766 } 2767 } 2768 } 2769 2770 /******************************************************************************** 2771 * Panic in a slightly informative fashion 2772 */ 2773 static void 2774 mly_panic(struct mly_softc *sc, char *reason) 2775 { 2776 mly_printstate(sc); 2777 panic(reason); 2778 } 2779 2780 /******************************************************************************** 2781 * Print queue statistics, callable from DDB. 2782 */ 2783 void 2784 mly_print_controller(int controller) 2785 { 2786 struct mly_softc *sc; 2787 2788 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2789 kprintf("mly: controller %d invalid\n", controller); 2790 } else { 2791 device_printf(sc->mly_dev, "queue curr max\n"); 2792 device_printf(sc->mly_dev, "free %04d/%04d\n", 2793 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2794 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2795 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2796 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2797 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2798 } 2799 } 2800 #endif 2801 2802 2803 /******************************************************************************** 2804 ******************************************************************************** 2805 Control device interface 2806 ******************************************************************************** 2807 ********************************************************************************/ 2808 2809 /******************************************************************************** 2810 * Accept an open operation on the control device. 2811 */ 2812 static int 2813 mly_user_open(struct dev_open_args *ap) 2814 { 2815 cdev_t dev = ap->a_head.a_dev; 2816 int unit = minor(dev); 2817 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2818 2819 sc->mly_state |= MLY_STATE_OPEN; 2820 return(0); 2821 } 2822 2823 /******************************************************************************** 2824 * Accept the last close on the control device. 2825 */ 2826 static int 2827 mly_user_close(struct dev_close_args *ap) 2828 { 2829 cdev_t dev = ap->a_head.a_dev; 2830 int unit = minor(dev); 2831 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2832 2833 sc->mly_state &= ~MLY_STATE_OPEN; 2834 return (0); 2835 } 2836 2837 /******************************************************************************** 2838 * Handle controller-specific control operations. 2839 */ 2840 static int 2841 mly_user_ioctl(struct dev_ioctl_args *ap) 2842 { 2843 cdev_t dev = ap->a_head.a_dev; 2844 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2845 struct mly_user_command *uc = (struct mly_user_command *)ap->a_data; 2846 struct mly_user_health *uh = (struct mly_user_health *)ap->a_data; 2847 2848 switch(ap->a_cmd) { 2849 case MLYIO_COMMAND: 2850 return(mly_user_command(sc, uc)); 2851 case MLYIO_HEALTH: 2852 return(mly_user_health(sc, uh)); 2853 default: 2854 return(ENOIOCTL); 2855 } 2856 } 2857 2858 /******************************************************************************** 2859 * Execute a command passed in from userspace. 2860 * 2861 * The control structure contains the actual command for the controller, as well 2862 * as the user-space data pointer and data size, and an optional sense buffer 2863 * size/pointer. On completion, the data size is adjusted to the command 2864 * residual, and the sense buffer size to the size of the returned sense data. 2865 * 2866 */ 2867 static int 2868 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2869 { 2870 struct mly_command *mc; 2871 int error; 2872 2873 /* allocate a command */ 2874 if (mly_alloc_command(sc, &mc)) { 2875 error = ENOMEM; 2876 goto out; /* XXX Linux version will wait for a command */ 2877 } 2878 2879 /* handle data size/direction */ 2880 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2881 if (mc->mc_length > 0) 2882 mc->mc_data = kmalloc(mc->mc_length, M_DEVBUF, M_INTWAIT); 2883 if (uc->DataTransferLength > 0) { 2884 mc->mc_flags |= MLY_CMD_DATAIN; 2885 bzero(mc->mc_data, mc->mc_length); 2886 } 2887 if (uc->DataTransferLength < 0) { 2888 mc->mc_flags |= MLY_CMD_DATAOUT; 2889 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2890 goto out; 2891 } 2892 2893 /* copy the controller command */ 2894 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2895 2896 /* clear command completion handler so that we get woken up */ 2897 mc->mc_complete = NULL; 2898 2899 /* execute the command */ 2900 if ((error = mly_start(mc)) != 0) 2901 goto out; 2902 crit_enter(); 2903 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2904 tsleep(mc, 0, "mlyioctl", 0); 2905 crit_exit(); 2906 2907 /* return the data to userspace */ 2908 if (uc->DataTransferLength > 0) 2909 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2910 goto out; 2911 2912 /* return the sense buffer to userspace */ 2913 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2914 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2915 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2916 goto out; 2917 } 2918 2919 /* return command results to userspace (caller will copy out) */ 2920 uc->DataTransferLength = mc->mc_resid; 2921 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2922 uc->CommandStatus = mc->mc_status; 2923 error = 0; 2924 2925 out: 2926 if (mc->mc_data != NULL) 2927 kfree(mc->mc_data, M_DEVBUF); 2928 if (mc != NULL) 2929 mly_release_command(mc); 2930 return(error); 2931 } 2932 2933 /******************************************************************************** 2934 * Return health status to userspace. If the health change index in the user 2935 * structure does not match that currently exported by the controller, we 2936 * return the current status immediately. Otherwise, we block until either 2937 * interrupted or new status is delivered. 2938 */ 2939 static int 2940 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2941 { 2942 struct mly_health_status mh; 2943 int error; 2944 2945 /* fetch the current health status from userspace */ 2946 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2947 return(error); 2948 2949 /* spin waiting for a status update */ 2950 crit_enter(); 2951 error = EWOULDBLOCK; 2952 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2953 error = tsleep(&sc->mly_event_change, PCATCH, "mlyhealth", 0); 2954 crit_exit(); 2955 2956 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2957 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2958 sizeof(uh->HealthStatusBuffer)); 2959 return(error); 2960 } 2961 2962 #ifdef MLY_DEBUG 2963 static int 2964 mly_timeout(struct mly_softc *sc) 2965 { 2966 struct mly_command *mc; 2967 int deadline; 2968 2969 deadline = time_second - MLY_CMD_TIMEOUT; 2970 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2971 if ((mc->mc_timestamp < deadline)) { 2972 device_printf(sc->mly_dev, 2973 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2974 (int)(time_second - mc->mc_timestamp)); 2975 } 2976 } 2977 2978 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 2979 (timeout_t *)mly_timeout, sc); 2980 2981 return (0); 2982 } 2983 #endif 2984