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 * $DragonFly: src/sys/dev/raid/mly/mly.c,v 1.21 2008/05/18 20:30:23 pavalos Exp $ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/conf.h> 37 #include <sys/device.h> 38 #include <sys/ctype.h> 39 #include <sys/stat.h> 40 #include <sys/rman.h> 41 #include <sys/thread2.h> 42 43 #include <bus/cam/cam.h> 44 #include <bus/cam/cam_ccb.h> 45 #include <bus/cam/cam_periph.h> 46 #include <bus/cam/cam_sim.h> 47 #include <bus/cam/cam_xpt_sim.h> 48 #include <bus/cam/scsi/scsi_all.h> 49 #include <bus/cam/scsi/scsi_message.h> 50 51 #include <bus/pci/pcireg.h> 52 #include <bus/pci/pcivar.h> 53 54 #include "mlyreg.h" 55 #include "mlyio.h" 56 #include "mlyvar.h" 57 #include "mly_tables.h" 58 59 static int mly_probe(device_t dev); 60 static int mly_attach(device_t dev); 61 static int mly_pci_attach(struct mly_softc *sc); 62 static int mly_detach(device_t dev); 63 static int mly_shutdown(device_t dev); 64 static void mly_intr(void *arg); 65 66 static int mly_sg_map(struct mly_softc *sc); 67 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 68 static int mly_mmbox_map(struct mly_softc *sc); 69 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 70 static void mly_free(struct mly_softc *sc); 71 72 static int mly_get_controllerinfo(struct mly_softc *sc); 73 static void mly_scan_devices(struct mly_softc *sc); 74 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 75 static void mly_complete_rescan(struct mly_command *mc); 76 static int mly_get_eventstatus(struct mly_softc *sc); 77 static int mly_enable_mmbox(struct mly_softc *sc); 78 static int mly_flush(struct mly_softc *sc); 79 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 80 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 81 static void mly_check_event(struct mly_softc *sc); 82 static void mly_fetch_event(struct mly_softc *sc); 83 static void mly_complete_event(struct mly_command *mc); 84 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 85 static void mly_periodic(void *data); 86 87 static int mly_immediate_command(struct mly_command *mc); 88 static int mly_start(struct mly_command *mc); 89 static void mly_done(struct mly_softc *sc); 90 static void mly_complete(void *context, int pending); 91 92 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 93 static void mly_release_command(struct mly_command *mc); 94 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 95 static int mly_alloc_commands(struct mly_softc *sc); 96 static void mly_release_commands(struct mly_softc *sc); 97 static void mly_map_command(struct mly_command *mc); 98 static void mly_unmap_command(struct mly_command *mc); 99 100 static int mly_cam_attach(struct mly_softc *sc); 101 static void mly_cam_detach(struct mly_softc *sc); 102 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 103 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 104 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 105 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 106 static void mly_cam_poll(struct cam_sim *sim); 107 static void mly_cam_complete(struct mly_command *mc); 108 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 109 static int mly_name_device(struct mly_softc *sc, int bus, int target); 110 111 static int mly_fwhandshake(struct mly_softc *sc); 112 113 static void mly_describe_controller(struct mly_softc *sc); 114 #ifdef MLY_DEBUG 115 static void mly_printstate(struct mly_softc *sc); 116 static void mly_print_command(struct mly_command *mc); 117 static void mly_print_packet(struct mly_command *mc); 118 static void mly_panic(struct mly_softc *sc, char *reason); 119 #endif 120 void mly_print_controller(int controller); 121 static int mly_timeout(struct mly_softc *sc); 122 123 124 static d_open_t mly_user_open; 125 static d_close_t mly_user_close; 126 static d_ioctl_t mly_user_ioctl; 127 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 128 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 129 130 #define MLY_CMD_TIMEOUT 20 131 132 static device_method_t mly_methods[] = { 133 /* Device interface */ 134 DEVMETHOD(device_probe, mly_probe), 135 DEVMETHOD(device_attach, mly_attach), 136 DEVMETHOD(device_detach, mly_detach), 137 DEVMETHOD(device_shutdown, mly_shutdown), 138 { 0, 0 } 139 }; 140 141 static driver_t mly_pci_driver = { 142 "mly", 143 mly_methods, 144 sizeof(struct mly_softc) 145 }; 146 147 static devclass_t mly_devclass; 148 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 149 150 #define MLY_CDEV_MAJOR 158 151 152 static struct dev_ops mly_ops = { 153 { "mly", MLY_CDEV_MAJOR, 0 }, 154 .d_open = mly_user_open, 155 .d_close = mly_user_close, 156 .d_ioctl = mly_user_ioctl, 157 }; 158 159 /******************************************************************************** 160 ******************************************************************************** 161 Device Interface 162 ******************************************************************************** 163 ********************************************************************************/ 164 165 static struct mly_ident 166 { 167 u_int16_t vendor; 168 u_int16_t device; 169 u_int16_t subvendor; 170 u_int16_t subdevice; 171 int hwif; 172 char *desc; 173 } mly_identifiers[] = { 174 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 175 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 176 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 177 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 178 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 179 {0, 0, 0, 0, 0, 0} 180 }; 181 182 /******************************************************************************** 183 * Compare the provided PCI device with the list we support. 184 */ 185 static int 186 mly_probe(device_t dev) 187 { 188 struct mly_ident *m; 189 190 debug_called(1); 191 192 for (m = mly_identifiers; m->vendor != 0; m++) { 193 if ((m->vendor == pci_get_vendor(dev)) && 194 (m->device == pci_get_device(dev)) && 195 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 196 (m->subdevice == pci_get_subdevice(dev))))) { 197 198 device_set_desc(dev, m->desc); 199 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 200 } 201 } 202 return(ENXIO); 203 } 204 205 /******************************************************************************** 206 * Initialise the controller and softc 207 */ 208 static int 209 mly_attach(device_t dev) 210 { 211 struct mly_softc *sc = device_get_softc(dev); 212 int error; 213 214 debug_called(1); 215 216 sc->mly_dev = dev; 217 218 #ifdef MLY_DEBUG 219 if (device_get_unit(sc->mly_dev) == 0) 220 mly_softc0 = sc; 221 #endif 222 223 /* 224 * Do PCI-specific initialisation. 225 */ 226 if ((error = mly_pci_attach(sc)) != 0) 227 goto out; 228 229 callout_init(&sc->mly_periodic); 230 callout_init(&sc->mly_timeout); 231 232 /* 233 * Initialise per-controller queues. 234 */ 235 mly_initq_free(sc); 236 mly_initq_busy(sc); 237 mly_initq_complete(sc); 238 239 /* 240 * Initialise command-completion task. 241 */ 242 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 243 244 /* disable interrupts before we start talking to the controller */ 245 MLY_MASK_INTERRUPTS(sc); 246 247 /* 248 * Wait for the controller to come ready, handshake with the firmware if required. 249 * This is typically only necessary on platforms where the controller BIOS does not 250 * run. 251 */ 252 if ((error = mly_fwhandshake(sc))) 253 goto out; 254 255 /* 256 * Allocate initial command buffers. 257 */ 258 if ((error = mly_alloc_commands(sc))) 259 goto out; 260 261 /* 262 * Obtain controller feature information 263 */ 264 if ((error = mly_get_controllerinfo(sc))) 265 goto out; 266 267 /* 268 * Reallocate command buffers now we know how many we want. 269 */ 270 mly_release_commands(sc); 271 if ((error = mly_alloc_commands(sc))) 272 goto out; 273 274 /* 275 * Get the current event counter for health purposes, populate the initial 276 * health status buffer. 277 */ 278 if ((error = mly_get_eventstatus(sc))) 279 goto out; 280 281 /* 282 * Enable memory-mailbox mode. 283 */ 284 if ((error = mly_enable_mmbox(sc))) 285 goto out; 286 287 /* 288 * Attach to CAM. 289 */ 290 if ((error = mly_cam_attach(sc))) 291 goto out; 292 293 /* 294 * Print a little information about the controller 295 */ 296 mly_describe_controller(sc); 297 298 /* 299 * Mark all attached devices for rescan. 300 */ 301 mly_scan_devices(sc); 302 303 /* 304 * Instigate the first status poll immediately. Rescan completions won't 305 * happen until interrupts are enabled, which should still be before 306 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 307 */ 308 mly_periodic((void *)sc); 309 310 /* 311 * Create the control device. 312 */ 313 dev_ops_add(&mly_ops, -1, device_get_unit(sc->mly_dev)); 314 sc->mly_dev_t = make_dev(&mly_ops, device_get_unit(sc->mly_dev), 315 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 316 "mly%d", device_get_unit(sc->mly_dev)); 317 sc->mly_dev_t->si_drv1 = sc; 318 319 /* enable interrupts now */ 320 MLY_UNMASK_INTERRUPTS(sc); 321 322 #ifdef MLY_DEBUG 323 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 324 (timeout_t *)mly_timeout, sc); 325 #endif 326 327 out: 328 if (error != 0) 329 mly_free(sc); 330 return(error); 331 } 332 333 /******************************************************************************** 334 * Perform PCI-specific initialisation. 335 */ 336 static int 337 mly_pci_attach(struct mly_softc *sc) 338 { 339 int i, error; 340 u_int32_t command; 341 342 debug_called(1); 343 344 /* assume failure is 'not configured' */ 345 error = ENXIO; 346 347 /* 348 * Verify that the adapter is correctly set up in PCI space. 349 * 350 * XXX we shouldn't do this; the PCI code should. 351 */ 352 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 353 command |= PCIM_CMD_BUSMASTEREN; 354 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 355 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 356 if (!(command & PCIM_CMD_BUSMASTEREN)) { 357 mly_printf(sc, "can't enable busmaster feature\n"); 358 goto fail; 359 } 360 if ((command & PCIM_CMD_MEMEN) == 0) { 361 mly_printf(sc, "memory window not available\n"); 362 goto fail; 363 } 364 365 /* 366 * Allocate the PCI register window. 367 */ 368 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 369 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 370 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 371 mly_printf(sc, "can't allocate register window\n"); 372 goto fail; 373 } 374 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 375 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 376 377 /* 378 * Allocate and connect our interrupt. 379 */ 380 sc->mly_irq_rid = 0; 381 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 382 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 383 mly_printf(sc, "can't allocate interrupt\n"); 384 goto fail; 385 } 386 error = bus_setup_intr(sc->mly_dev, sc->mly_irq, 0, 387 mly_intr, sc, &sc->mly_intr, NULL); 388 if (error) { 389 mly_printf(sc, "can't set up interrupt\n"); 390 goto fail; 391 } 392 393 /* assume failure is 'out of memory' */ 394 error = ENOMEM; 395 396 /* 397 * Allocate the parent bus DMA tag appropriate for our PCI interface. 398 * 399 * Note that all of these controllers are 64-bit capable. 400 */ 401 if (bus_dma_tag_create(NULL, /* parent */ 402 1, 0, /* alignment, boundary */ 403 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 404 BUS_SPACE_MAXADDR, /* highaddr */ 405 NULL, NULL, /* filter, filterarg */ 406 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 407 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 408 BUS_DMA_ALLOCNOW, /* flags */ 409 &sc->mly_parent_dmat)) { 410 mly_printf(sc, "can't allocate parent DMA tag\n"); 411 goto fail; 412 } 413 414 /* 415 * Create DMA tag for mapping buffers into controller-addressable space. 416 */ 417 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 418 1, 0, /* alignment, boundary */ 419 BUS_SPACE_MAXADDR, /* lowaddr */ 420 BUS_SPACE_MAXADDR, /* highaddr */ 421 NULL, NULL, /* filter, filterarg */ 422 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 423 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 424 0, /* flags */ 425 &sc->mly_buffer_dmat)) { 426 mly_printf(sc, "can't allocate buffer DMA tag\n"); 427 goto fail; 428 } 429 430 /* 431 * Initialise the DMA tag for command packets. 432 */ 433 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 434 1, 0, /* alignment, boundary */ 435 BUS_SPACE_MAXADDR, /* lowaddr */ 436 BUS_SPACE_MAXADDR, /* highaddr */ 437 NULL, NULL, /* filter, filterarg */ 438 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 439 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 440 BUS_DMA_ALLOCNOW, /* flags */ 441 &sc->mly_packet_dmat)) { 442 mly_printf(sc, "can't allocate command packet DMA tag\n"); 443 goto fail; 444 } 445 446 /* 447 * Detect the hardware interface version 448 */ 449 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 450 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 451 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 452 sc->mly_hwif = mly_identifiers[i].hwif; 453 switch(sc->mly_hwif) { 454 case MLY_HWIF_I960RX: 455 debug(1, "set hardware up for i960RX"); 456 sc->mly_doorbell_true = 0x00; 457 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 458 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 459 sc->mly_idbr = MLY_I960RX_IDBR; 460 sc->mly_odbr = MLY_I960RX_ODBR; 461 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 462 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 463 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 464 break; 465 case MLY_HWIF_STRONGARM: 466 debug(1, "set hardware up for StrongARM"); 467 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 468 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 469 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 470 sc->mly_idbr = MLY_STRONGARM_IDBR; 471 sc->mly_odbr = MLY_STRONGARM_ODBR; 472 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 473 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 474 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 475 break; 476 } 477 break; 478 } 479 } 480 481 /* 482 * Create the scatter/gather mappings. 483 */ 484 if ((error = mly_sg_map(sc))) 485 goto fail; 486 487 /* 488 * Allocate and map the memory mailbox 489 */ 490 if ((error = mly_mmbox_map(sc))) 491 goto fail; 492 493 error = 0; 494 495 fail: 496 return(error); 497 } 498 499 /******************************************************************************** 500 * Shut the controller down and detach all our resources. 501 */ 502 static int 503 mly_detach(device_t dev) 504 { 505 int error; 506 507 if ((error = mly_shutdown(dev)) != 0) 508 return(error); 509 510 mly_free(device_get_softc(dev)); 511 return(0); 512 } 513 514 /******************************************************************************** 515 * Bring the controller to a state where it can be safely left alone. 516 * 517 * Note that it should not be necessary to wait for any outstanding commands, 518 * as they should be completed prior to calling here. 519 * 520 * XXX this applies for I/O, but not status polls; we should beware of 521 * the case where a status command is running while we detach. 522 */ 523 static int 524 mly_shutdown(device_t dev) 525 { 526 struct mly_softc *sc = device_get_softc(dev); 527 528 debug_called(1); 529 530 if (sc->mly_state & MLY_STATE_OPEN) 531 return(EBUSY); 532 533 /* kill the periodic event */ 534 callout_stop(&sc->mly_periodic); 535 536 /* flush controller */ 537 mly_printf(sc, "flushing cache..."); 538 kprintf("%s\n", mly_flush(sc) ? "failed" : "done"); 539 540 MLY_MASK_INTERRUPTS(sc); 541 542 return(0); 543 } 544 545 /******************************************************************************* 546 * Take an interrupt, or be poked by other code to look for interrupt-worthy 547 * status. 548 */ 549 static void 550 mly_intr(void *arg) 551 { 552 struct mly_softc *sc = (struct mly_softc *)arg; 553 554 debug_called(2); 555 556 mly_done(sc); 557 }; 558 559 /******************************************************************************** 560 ******************************************************************************** 561 Bus-dependant Resource Management 562 ******************************************************************************** 563 ********************************************************************************/ 564 565 /******************************************************************************** 566 * Allocate memory for the scatter/gather tables 567 */ 568 static int 569 mly_sg_map(struct mly_softc *sc) 570 { 571 size_t segsize; 572 573 debug_called(1); 574 575 /* 576 * Create a single tag describing a region large enough to hold all of 577 * the s/g lists we will need. 578 */ 579 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 580 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 581 1, 0, /* alignment,boundary */ 582 BUS_SPACE_MAXADDR, /* lowaddr */ 583 BUS_SPACE_MAXADDR, /* highaddr */ 584 NULL, NULL, /* filter, filterarg */ 585 segsize, 1, /* maxsize, nsegments */ 586 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 587 BUS_DMA_ALLOCNOW, /* flags */ 588 &sc->mly_sg_dmat)) { 589 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 590 return(ENOMEM); 591 } 592 593 /* 594 * Allocate enough s/g maps for all commands and permanently map them into 595 * controller-visible space. 596 * 597 * XXX this assumes we can get enough space for all the s/g maps in one 598 * contiguous slab. 599 */ 600 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 601 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 602 mly_printf(sc, "can't allocate s/g table\n"); 603 return(ENOMEM); 604 } 605 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 606 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 607 return (ENOMEM); 608 return(0); 609 } 610 611 /******************************************************************************** 612 * Save the physical address of the base of the s/g table. 613 */ 614 static void 615 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 616 { 617 struct mly_softc *sc = (struct mly_softc *)arg; 618 619 debug_called(1); 620 621 /* save base of s/g table's address in bus space */ 622 sc->mly_sg_busaddr = segs->ds_addr; 623 } 624 625 /******************************************************************************** 626 * Allocate memory for the memory-mailbox interface 627 */ 628 static int 629 mly_mmbox_map(struct mly_softc *sc) 630 { 631 632 /* 633 * Create a DMA tag for a single contiguous region large enough for the 634 * memory mailbox structure. 635 */ 636 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 637 1, 0, /* alignment,boundary */ 638 BUS_SPACE_MAXADDR, /* lowaddr */ 639 BUS_SPACE_MAXADDR, /* highaddr */ 640 NULL, NULL, /* filter, filterarg */ 641 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 642 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 643 BUS_DMA_ALLOCNOW, /* flags */ 644 &sc->mly_mmbox_dmat)) { 645 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 646 return(ENOMEM); 647 } 648 649 /* 650 * Allocate the buffer 651 */ 652 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 653 mly_printf(sc, "can't allocate memory mailbox\n"); 654 return(ENOMEM); 655 } 656 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 657 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 658 BUS_DMA_NOWAIT) != 0) 659 return (ENOMEM); 660 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 661 return(0); 662 663 } 664 665 /******************************************************************************** 666 * Save the physical address of the memory mailbox 667 */ 668 static void 669 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 670 { 671 struct mly_softc *sc = (struct mly_softc *)arg; 672 673 debug_called(1); 674 675 sc->mly_mmbox_busaddr = segs->ds_addr; 676 } 677 678 /******************************************************************************** 679 * Free all of the resources associated with (sc) 680 * 681 * Should not be called if the controller is active. 682 */ 683 static void 684 mly_free(struct mly_softc *sc) 685 { 686 687 debug_called(1); 688 689 /* Remove the management device */ 690 destroy_dev(sc->mly_dev_t); 691 692 /* detach from CAM */ 693 mly_cam_detach(sc); 694 695 /* release command memory */ 696 mly_release_commands(sc); 697 698 /* throw away the controllerinfo structure */ 699 if (sc->mly_controllerinfo != NULL) 700 kfree(sc->mly_controllerinfo, M_DEVBUF); 701 702 /* throw away the controllerparam structure */ 703 if (sc->mly_controllerparam != NULL) 704 kfree(sc->mly_controllerparam, M_DEVBUF); 705 706 /* destroy data-transfer DMA tag */ 707 if (sc->mly_buffer_dmat) 708 bus_dma_tag_destroy(sc->mly_buffer_dmat); 709 710 /* free and destroy DMA memory and tag for s/g lists */ 711 if (sc->mly_sg_table) { 712 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 713 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 714 } 715 if (sc->mly_sg_dmat) 716 bus_dma_tag_destroy(sc->mly_sg_dmat); 717 718 /* free and destroy DMA memory and tag for memory mailbox */ 719 if (sc->mly_mmbox) { 720 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 721 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 722 } 723 if (sc->mly_mmbox_dmat) 724 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 725 726 /* disconnect the interrupt handler */ 727 if (sc->mly_intr) 728 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 729 if (sc->mly_irq != NULL) 730 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 731 732 /* destroy the parent DMA tag */ 733 if (sc->mly_parent_dmat) 734 bus_dma_tag_destroy(sc->mly_parent_dmat); 735 736 /* release the register window mapping */ 737 if (sc->mly_regs_resource != NULL) 738 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 739 } 740 741 /******************************************************************************** 742 ******************************************************************************** 743 Command Wrappers 744 ******************************************************************************** 745 ********************************************************************************/ 746 747 /******************************************************************************** 748 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 749 */ 750 static int 751 mly_get_controllerinfo(struct mly_softc *sc) 752 { 753 struct mly_command_ioctl mci; 754 u_int8_t status; 755 int error; 756 757 debug_called(1); 758 759 if (sc->mly_controllerinfo != NULL) 760 kfree(sc->mly_controllerinfo, M_DEVBUF); 761 762 /* build the getcontrollerinfo ioctl and send it */ 763 bzero(&mci, sizeof(mci)); 764 sc->mly_controllerinfo = NULL; 765 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 766 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 767 &status, NULL, NULL))) 768 return(error); 769 if (status != 0) 770 return(EIO); 771 772 if (sc->mly_controllerparam != NULL) 773 kfree(sc->mly_controllerparam, M_DEVBUF); 774 775 /* build the getcontrollerparameter ioctl and send it */ 776 bzero(&mci, sizeof(mci)); 777 sc->mly_controllerparam = NULL; 778 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 779 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 780 &status, NULL, NULL))) 781 return(error); 782 if (status != 0) 783 return(EIO); 784 785 return(0); 786 } 787 788 /******************************************************************************** 789 * Schedule all possible devices for a rescan. 790 * 791 */ 792 static void 793 mly_scan_devices(struct mly_softc *sc) 794 { 795 int bus, target; 796 797 debug_called(1); 798 799 /* 800 * Clear any previous BTL information. 801 */ 802 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 803 804 /* 805 * Mark all devices as requiring a rescan, and let the next 806 * periodic scan collect them. 807 */ 808 for (bus = 0; bus < sc->mly_cam_channels; bus++) 809 if (MLY_BUS_IS_VALID(sc, bus)) 810 for (target = 0; target < MLY_MAX_TARGETS; target++) 811 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 812 813 } 814 815 /******************************************************************************** 816 * Rescan a device, possibly as a consequence of getting an event which suggests 817 * that it may have changed. 818 * 819 * If we suffer resource starvation, we can abandon the rescan as we'll be 820 * retried. 821 */ 822 static void 823 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 824 { 825 struct mly_command *mc; 826 struct mly_command_ioctl *mci; 827 828 debug_called(1); 829 830 /* check that this bus is valid */ 831 if (!MLY_BUS_IS_VALID(sc, bus)) 832 return; 833 834 /* get a command */ 835 if (mly_alloc_command(sc, &mc)) 836 return; 837 838 /* set up the data buffer */ 839 mc->mc_data = kmalloc(sizeof(union mly_devinfo), M_DEVBUF, M_INTWAIT | M_ZERO); 840 mc->mc_flags |= MLY_CMD_DATAIN; 841 mc->mc_complete = mly_complete_rescan; 842 843 /* 844 * Build the ioctl. 845 */ 846 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 847 mci->opcode = MDACMD_IOCTL; 848 mci->addr.phys.controller = 0; 849 mci->timeout.value = 30; 850 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 851 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 852 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 853 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 854 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 855 debug(1, "logical device %d", mci->addr.log.logdev); 856 } else { 857 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 858 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 859 mci->addr.phys.lun = 0; 860 mci->addr.phys.target = target; 861 mci->addr.phys.channel = bus; 862 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 863 } 864 865 /* 866 * Dispatch the command. If we successfully send the command, clear the rescan 867 * bit. 868 */ 869 if (mly_start(mc) != 0) { 870 mly_release_command(mc); 871 } else { 872 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 873 } 874 } 875 876 /******************************************************************************** 877 * Handle the completion of a rescan operation 878 */ 879 static void 880 mly_complete_rescan(struct mly_command *mc) 881 { 882 struct mly_softc *sc = mc->mc_sc; 883 struct mly_ioctl_getlogdevinfovalid *ldi; 884 struct mly_ioctl_getphysdevinfovalid *pdi; 885 struct mly_command_ioctl *mci; 886 struct mly_btl btl, *btlp; 887 int bus, target, rescan; 888 889 debug_called(1); 890 891 /* 892 * Recover the bus and target from the command. We need these even in 893 * the case where we don't have a useful response. 894 */ 895 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 896 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 897 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 898 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 899 } else { 900 bus = mci->addr.phys.channel; 901 target = mci->addr.phys.target; 902 } 903 /* XXX validate bus/target? */ 904 905 /* the default result is 'no device' */ 906 bzero(&btl, sizeof(btl)); 907 908 /* if the rescan completed OK, we have possibly-new BTL data */ 909 if (mc->mc_status == 0) { 910 if (mc->mc_length == sizeof(*ldi)) { 911 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 912 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 913 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 914 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 915 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 916 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 917 /* XXX what can we do about this? */ 918 } 919 btl.mb_flags = MLY_BTL_LOGICAL; 920 btl.mb_type = ldi->raid_level; 921 btl.mb_state = ldi->state; 922 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 923 mly_describe_code(mly_table_device_type, ldi->raid_level), 924 mly_describe_code(mly_table_device_state, ldi->state)); 925 } else if (mc->mc_length == sizeof(*pdi)) { 926 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 927 if ((pdi->channel != bus) || (pdi->target != target)) { 928 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 929 bus, target, pdi->channel, pdi->target); 930 /* XXX what can we do about this? */ 931 } 932 btl.mb_flags = MLY_BTL_PHYSICAL; 933 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 934 btl.mb_state = pdi->state; 935 btl.mb_speed = pdi->speed; 936 btl.mb_width = pdi->width; 937 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 938 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 939 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 940 mly_describe_code(mly_table_device_state, pdi->state)); 941 } else { 942 mly_printf(sc, "BTL rescan result invalid\n"); 943 } 944 } 945 946 kfree(mc->mc_data, M_DEVBUF); 947 mly_release_command(mc); 948 949 /* 950 * Decide whether we need to rescan the device. 951 */ 952 rescan = 0; 953 954 /* device type changes (usually between 'nothing' and 'something') */ 955 btlp = &sc->mly_btl[bus][target]; 956 if (btl.mb_flags != btlp->mb_flags) { 957 debug(1, "flags changed, rescanning"); 958 rescan = 1; 959 } 960 961 /* XXX other reasons? */ 962 963 /* 964 * Update BTL information. 965 */ 966 *btlp = btl; 967 968 /* 969 * Perform CAM rescan if required. 970 */ 971 if (rescan) 972 mly_cam_rescan_btl(sc, bus, target); 973 } 974 975 /******************************************************************************** 976 * Get the current health status and set the 'next event' counter to suit. 977 */ 978 static int 979 mly_get_eventstatus(struct mly_softc *sc) 980 { 981 struct mly_command_ioctl mci; 982 struct mly_health_status *mh; 983 u_int8_t status; 984 int error; 985 986 /* build the gethealthstatus ioctl and send it */ 987 bzero(&mci, sizeof(mci)); 988 mh = NULL; 989 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 990 991 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 992 return(error); 993 if (status != 0) 994 return(EIO); 995 996 /* get the event counter */ 997 sc->mly_event_change = mh->change_counter; 998 sc->mly_event_waiting = mh->next_event; 999 sc->mly_event_counter = mh->next_event; 1000 1001 /* save the health status into the memory mailbox */ 1002 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1003 1004 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1005 1006 kfree(mh, M_DEVBUF); 1007 return(0); 1008 } 1009 1010 /******************************************************************************** 1011 * Enable the memory mailbox mode. 1012 */ 1013 static int 1014 mly_enable_mmbox(struct mly_softc *sc) 1015 { 1016 struct mly_command_ioctl mci; 1017 u_int8_t *sp, status; 1018 int error; 1019 1020 debug_called(1); 1021 1022 /* build the ioctl and send it */ 1023 bzero(&mci, sizeof(mci)); 1024 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1025 /* set buffer addresses */ 1026 mci.param.setmemorymailbox.command_mailbox_physaddr = 1027 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1028 mci.param.setmemorymailbox.status_mailbox_physaddr = 1029 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1030 mci.param.setmemorymailbox.health_buffer_physaddr = 1031 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1032 1033 /* set buffer sizes - abuse of data_size field is revolting */ 1034 sp = (u_int8_t *)&mci.data_size; 1035 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1036 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1037 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1038 1039 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1040 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1041 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1042 mci.param.setmemorymailbox.health_buffer_physaddr, 1043 mci.param.setmemorymailbox.health_buffer_size); 1044 1045 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1046 return(error); 1047 if (status != 0) 1048 return(EIO); 1049 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1050 debug(1, "memory mailbox active"); 1051 return(0); 1052 } 1053 1054 /******************************************************************************** 1055 * Flush all pending I/O from the controller. 1056 */ 1057 static int 1058 mly_flush(struct mly_softc *sc) 1059 { 1060 struct mly_command_ioctl mci; 1061 u_int8_t status; 1062 int error; 1063 1064 debug_called(1); 1065 1066 /* build the ioctl */ 1067 bzero(&mci, sizeof(mci)); 1068 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1069 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1070 1071 /* pass it off to the controller */ 1072 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1073 return(error); 1074 1075 return((status == 0) ? 0 : EIO); 1076 } 1077 1078 /******************************************************************************** 1079 * Perform an ioctl command. 1080 * 1081 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1082 * the command requires data transfer from the controller, and we will allocate 1083 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1084 * to the controller. 1085 * 1086 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1087 * 1088 * XXX we don't even try to handle the case where datasize > 4k. We should. 1089 */ 1090 static int 1091 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1092 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1093 { 1094 struct mly_command *mc; 1095 struct mly_command_ioctl *mci; 1096 int error; 1097 1098 debug_called(1); 1099 1100 mc = NULL; 1101 if (mly_alloc_command(sc, &mc)) { 1102 error = ENOMEM; 1103 goto out; 1104 } 1105 1106 /* copy the ioctl structure, but save some important fields and then fixup */ 1107 mci = &mc->mc_packet->ioctl; 1108 ioctl->sense_buffer_address = mci->sense_buffer_address; 1109 ioctl->maximum_sense_size = mci->maximum_sense_size; 1110 *mci = *ioctl; 1111 mci->opcode = MDACMD_IOCTL; 1112 mci->timeout.value = 30; 1113 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1114 1115 /* handle the data buffer */ 1116 if (data != NULL) { 1117 if (*data == NULL) { 1118 /* allocate data buffer */ 1119 mc->mc_data = kmalloc(datasize, M_DEVBUF, M_INTWAIT); 1120 mc->mc_flags |= MLY_CMD_DATAIN; 1121 } else { 1122 mc->mc_data = *data; 1123 mc->mc_flags |= MLY_CMD_DATAOUT; 1124 } 1125 mc->mc_length = datasize; 1126 mc->mc_packet->generic.data_size = datasize; 1127 } 1128 1129 /* run the command */ 1130 if ((error = mly_immediate_command(mc))) 1131 goto out; 1132 1133 /* clean up and return any data */ 1134 *status = mc->mc_status; 1135 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1136 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1137 *sense_length = mc->mc_sense; 1138 goto out; 1139 } 1140 1141 /* should we return a data pointer? */ 1142 if ((data != NULL) && (*data == NULL)) 1143 *data = mc->mc_data; 1144 1145 /* command completed OK */ 1146 error = 0; 1147 1148 out: 1149 if (mc != NULL) { 1150 /* do we need to free a data buffer we allocated? */ 1151 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1152 kfree(mc->mc_data, M_DEVBUF); 1153 mly_release_command(mc); 1154 } 1155 return(error); 1156 } 1157 1158 /******************************************************************************** 1159 * Check for event(s) outstanding in the controller. 1160 */ 1161 static void 1162 mly_check_event(struct mly_softc *sc) 1163 { 1164 1165 /* 1166 * The controller may have updated the health status information, 1167 * so check for it here. Note that the counters are all in host memory, 1168 * so this check is very cheap. Also note that we depend on checking on 1169 * completion 1170 */ 1171 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1172 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1173 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1174 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1175 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1176 1177 /* wake up anyone that might be interested in this */ 1178 wakeup(&sc->mly_event_change); 1179 } 1180 if (sc->mly_event_counter != sc->mly_event_waiting) 1181 mly_fetch_event(sc); 1182 } 1183 1184 /******************************************************************************** 1185 * Fetch one event from the controller. 1186 * 1187 * If we fail due to resource starvation, we'll be retried the next time a 1188 * command completes. 1189 */ 1190 static void 1191 mly_fetch_event(struct mly_softc *sc) 1192 { 1193 struct mly_command *mc; 1194 struct mly_command_ioctl *mci; 1195 u_int32_t event; 1196 1197 debug_called(1); 1198 1199 /* get a command */ 1200 if (mly_alloc_command(sc, &mc)) 1201 return; 1202 1203 /* set up the data buffer */ 1204 mc->mc_data = kmalloc(sizeof(struct mly_event), M_DEVBUF, M_INTWAIT|M_ZERO); 1205 mc->mc_length = sizeof(struct mly_event); 1206 mc->mc_flags |= MLY_CMD_DATAIN; 1207 mc->mc_complete = mly_complete_event; 1208 1209 /* 1210 * Get an event number to fetch. It's possible that we've raced with another 1211 * context for the last event, in which case there will be no more events. 1212 */ 1213 crit_enter(); 1214 if (sc->mly_event_counter == sc->mly_event_waiting) { 1215 mly_release_command(mc); 1216 crit_exit(); 1217 return; 1218 } 1219 event = sc->mly_event_counter++; 1220 crit_exit(); 1221 1222 /* 1223 * Build the ioctl. 1224 * 1225 * At this point we are committed to sending this request, as it 1226 * will be the only one constructed for this particular event number. 1227 */ 1228 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1229 mci->opcode = MDACMD_IOCTL; 1230 mci->data_size = sizeof(struct mly_event); 1231 mci->addr.phys.lun = (event >> 16) & 0xff; 1232 mci->addr.phys.target = (event >> 24) & 0xff; 1233 mci->addr.phys.channel = 0; 1234 mci->addr.phys.controller = 0; 1235 mci->timeout.value = 30; 1236 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1237 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1238 mci->param.getevent.sequence_number_low = event & 0xffff; 1239 1240 debug(1, "fetch event %u", event); 1241 1242 /* 1243 * Submit the command. 1244 * 1245 * Note that failure of mly_start() will result in this event never being 1246 * fetched. 1247 */ 1248 if (mly_start(mc) != 0) { 1249 mly_printf(sc, "couldn't fetch event %u\n", event); 1250 mly_release_command(mc); 1251 } 1252 } 1253 1254 /******************************************************************************** 1255 * Handle the completion of an event poll. 1256 */ 1257 static void 1258 mly_complete_event(struct mly_command *mc) 1259 { 1260 struct mly_softc *sc = mc->mc_sc; 1261 struct mly_event *me = (struct mly_event *)mc->mc_data; 1262 1263 debug_called(1); 1264 1265 /* 1266 * If the event was successfully fetched, process it. 1267 */ 1268 if (mc->mc_status == SCSI_STATUS_OK) { 1269 mly_process_event(sc, me); 1270 kfree(me, M_DEVBUF); 1271 } 1272 mly_release_command(mc); 1273 1274 /* 1275 * Check for another event. 1276 */ 1277 mly_check_event(sc); 1278 } 1279 1280 /******************************************************************************** 1281 * Process a controller event. 1282 */ 1283 static void 1284 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1285 { 1286 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1287 char *fp, *tp; 1288 int bus, target, event, class, action; 1289 1290 /* 1291 * Errors can be reported using vendor-unique sense data. In this case, the 1292 * event code will be 0x1c (Request sense data present), the sense key will 1293 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1294 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1295 * and low seven bits of the ASC (low seven bits of the high byte). 1296 */ 1297 if ((me->code == 0x1c) && 1298 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1299 (ssd->add_sense_code & 0x80)) { 1300 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1301 } else { 1302 event = me->code; 1303 } 1304 1305 /* look up event, get codes */ 1306 fp = mly_describe_code(mly_table_event, event); 1307 1308 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1309 1310 /* quiet event? */ 1311 class = fp[0]; 1312 if (isupper(class) && bootverbose) 1313 class = tolower(class); 1314 1315 /* get action code, text string */ 1316 action = fp[1]; 1317 tp = &fp[2]; 1318 1319 /* 1320 * Print some information about the event. 1321 * 1322 * This code uses a table derived from the corresponding portion of the Linux 1323 * driver, and thus the parser is very similar. 1324 */ 1325 switch(class) { 1326 case 'p': /* error on physical device */ 1327 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1328 if (action == 'r') 1329 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1330 break; 1331 case 'l': /* error on logical unit */ 1332 case 'm': /* message about logical unit */ 1333 bus = MLY_LOGDEV_BUS(sc, me->lun); 1334 target = MLY_LOGDEV_TARGET(sc, me->lun); 1335 mly_name_device(sc, bus, target); 1336 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1337 if (action == 'r') 1338 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1339 break; 1340 break; 1341 case 's': /* report of sense data */ 1342 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1343 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1344 (ssd->add_sense_code == 0x04) && 1345 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1346 break; /* ignore NO_SENSE or NOT_READY in one case */ 1347 1348 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1349 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1350 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1351 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1352 if (action == 'r') 1353 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1354 break; 1355 case 'e': 1356 mly_printf(sc, tp, me->target, me->lun); 1357 kprintf("\n"); 1358 break; 1359 case 'c': 1360 mly_printf(sc, "controller %s\n", tp); 1361 break; 1362 case '?': 1363 mly_printf(sc, "%s - %d\n", tp, me->code); 1364 break; 1365 default: /* probably a 'noisy' event being ignored */ 1366 break; 1367 } 1368 } 1369 1370 /******************************************************************************** 1371 * Perform periodic activities. 1372 */ 1373 static void 1374 mly_periodic(void *data) 1375 { 1376 struct mly_softc *sc = (struct mly_softc *)data; 1377 int bus, target; 1378 1379 debug_called(2); 1380 1381 /* 1382 * Scan devices. 1383 */ 1384 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1385 if (MLY_BUS_IS_VALID(sc, bus)) { 1386 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1387 1388 /* ignore the controller in this scan */ 1389 if (target == sc->mly_controllerparam->initiator_id) 1390 continue; 1391 1392 /* perform device rescan? */ 1393 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1394 mly_rescan_btl(sc, bus, target); 1395 } 1396 } 1397 } 1398 1399 /* check for controller events */ 1400 mly_check_event(sc); 1401 1402 /* reschedule ourselves */ 1403 callout_reset(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz, mly_periodic, sc); 1404 } 1405 1406 /******************************************************************************** 1407 ******************************************************************************** 1408 Command Processing 1409 ******************************************************************************** 1410 ********************************************************************************/ 1411 1412 /******************************************************************************** 1413 * Run a command and wait for it to complete. 1414 * 1415 */ 1416 static int 1417 mly_immediate_command(struct mly_command *mc) 1418 { 1419 struct mly_softc *sc = mc->mc_sc; 1420 int error; 1421 1422 debug_called(1); 1423 1424 /* spinning at splcam is ugly, but we're only used during controller init */ 1425 crit_enter(); 1426 if ((error = mly_start(mc))) { 1427 crit_exit(); 1428 return(error); 1429 } 1430 1431 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1432 /* sleep on the command */ 1433 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1434 tsleep(mc, 0, "mlywait", 0); 1435 } 1436 } else { 1437 /* spin and collect status while we do */ 1438 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1439 mly_done(mc->mc_sc); 1440 } 1441 } 1442 crit_exit(); 1443 return(0); 1444 } 1445 1446 /******************************************************************************** 1447 * Deliver a command to the controller. 1448 * 1449 * XXX it would be good to just queue commands that we can't submit immediately 1450 * and send them later, but we probably want a wrapper for that so that 1451 * we don't hang on a failed submission for an immediate command. 1452 */ 1453 static int 1454 mly_start(struct mly_command *mc) 1455 { 1456 struct mly_softc *sc = mc->mc_sc; 1457 union mly_command_packet *pkt; 1458 1459 debug_called(2); 1460 1461 /* 1462 * Set the command up for delivery to the controller. 1463 */ 1464 mly_map_command(mc); 1465 mc->mc_packet->generic.command_id = mc->mc_slot; 1466 1467 #ifdef MLY_DEBUG 1468 mc->mc_timestamp = time_second; 1469 #endif 1470 1471 crit_enter(); 1472 1473 /* 1474 * Do we have to use the hardware mailbox? 1475 */ 1476 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1477 /* 1478 * Check to see if the controller is ready for us. 1479 */ 1480 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1481 crit_exit(); 1482 return(EBUSY); 1483 } 1484 mc->mc_flags |= MLY_CMD_BUSY; 1485 1486 /* 1487 * It's ready, send the command. 1488 */ 1489 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1490 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1491 1492 } else { /* use memory-mailbox mode */ 1493 1494 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1495 1496 /* check to see if the next index is free yet */ 1497 if (pkt->mmbox.flag != 0) { 1498 crit_exit(); 1499 return(EBUSY); 1500 } 1501 mc->mc_flags |= MLY_CMD_BUSY; 1502 1503 /* copy in new command */ 1504 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1505 /* barrier to ensure completion of previous write before we write the flag */ 1506 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1507 BUS_SPACE_BARRIER_WRITE); 1508 /* copy flag last */ 1509 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1510 /* barrier to ensure completion of previous write before we notify the controller */ 1511 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1512 BUS_SPACE_BARRIER_WRITE); 1513 1514 /* signal controller, update index */ 1515 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1516 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1517 } 1518 1519 mly_enqueue_busy(mc); 1520 crit_exit(); 1521 return(0); 1522 } 1523 1524 /******************************************************************************** 1525 * Pick up command status from the controller, schedule a completion event 1526 */ 1527 static void 1528 mly_done(struct mly_softc *sc) 1529 { 1530 struct mly_command *mc; 1531 union mly_status_packet *sp; 1532 u_int16_t slot; 1533 int worked; 1534 1535 crit_enter(); 1536 worked = 0; 1537 1538 /* pick up hardware-mailbox commands */ 1539 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1540 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1541 if (slot < MLY_SLOT_MAX) { 1542 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1543 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1544 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1545 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1546 mly_remove_busy(mc); 1547 mc->mc_flags &= ~MLY_CMD_BUSY; 1548 mly_enqueue_complete(mc); 1549 worked = 1; 1550 } else { 1551 /* slot 0xffff may mean "extremely bogus command" */ 1552 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1553 } 1554 /* unconditionally acknowledge status */ 1555 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1556 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1557 } 1558 1559 /* pick up memory-mailbox commands */ 1560 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1561 for (;;) { 1562 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1563 1564 /* check for more status */ 1565 if (sp->mmbox.flag == 0) 1566 break; 1567 1568 /* get slot number */ 1569 slot = sp->status.command_id; 1570 if (slot < MLY_SLOT_MAX) { 1571 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1572 mc->mc_status = sp->status.status; 1573 mc->mc_sense = sp->status.sense_length; 1574 mc->mc_resid = sp->status.residue; 1575 mly_remove_busy(mc); 1576 mc->mc_flags &= ~MLY_CMD_BUSY; 1577 mly_enqueue_complete(mc); 1578 worked = 1; 1579 } else { 1580 /* slot 0xffff may mean "extremely bogus command" */ 1581 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1582 slot, sc->mly_mmbox_status_index); 1583 } 1584 1585 /* clear and move to next index */ 1586 sp->mmbox.flag = 0; 1587 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1588 } 1589 /* acknowledge that we have collected status value(s) */ 1590 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1591 } 1592 1593 crit_exit(); 1594 if (worked) { 1595 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1596 taskqueue_enqueue(taskqueue_swi, &sc->mly_task_complete); 1597 else 1598 mly_complete(sc, 0); 1599 } 1600 } 1601 1602 /******************************************************************************** 1603 * Process completed commands 1604 */ 1605 static void 1606 mly_complete(void *context, int pending) 1607 { 1608 struct mly_softc *sc = (struct mly_softc *)context; 1609 struct mly_command *mc; 1610 void (* mc_complete)(struct mly_command *mc); 1611 1612 1613 debug_called(2); 1614 1615 /* 1616 * Spin pulling commands off the completed queue and processing them. 1617 */ 1618 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1619 1620 /* 1621 * Free controller resources, mark command complete. 1622 * 1623 * Note that as soon as we mark the command complete, it may be freed 1624 * out from under us, so we need to save the mc_complete field in 1625 * order to later avoid dereferencing mc. (We would not expect to 1626 * have a polling/sleeping consumer with mc_complete != NULL). 1627 */ 1628 mly_unmap_command(mc); 1629 mc_complete = mc->mc_complete; 1630 mc->mc_flags |= MLY_CMD_COMPLETE; 1631 1632 /* 1633 * Call completion handler or wake up sleeping consumer. 1634 */ 1635 if (mc_complete != NULL) { 1636 mc_complete(mc); 1637 } else { 1638 wakeup(mc); 1639 } 1640 } 1641 1642 /* 1643 * XXX if we are deferring commands due to controller-busy status, we should 1644 * retry submitting them here. 1645 */ 1646 } 1647 1648 /******************************************************************************** 1649 ******************************************************************************** 1650 Command Buffer Management 1651 ******************************************************************************** 1652 ********************************************************************************/ 1653 1654 /******************************************************************************** 1655 * Allocate a command. 1656 */ 1657 static int 1658 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1659 { 1660 struct mly_command *mc; 1661 1662 debug_called(3); 1663 1664 if ((mc = mly_dequeue_free(sc)) == NULL) 1665 return(ENOMEM); 1666 1667 *mcp = mc; 1668 return(0); 1669 } 1670 1671 /******************************************************************************** 1672 * Release a command back to the freelist. 1673 */ 1674 static void 1675 mly_release_command(struct mly_command *mc) 1676 { 1677 debug_called(3); 1678 1679 /* 1680 * Fill in parts of the command that may cause confusion if 1681 * a consumer doesn't when we are later allocated. 1682 */ 1683 mc->mc_data = NULL; 1684 mc->mc_flags = 0; 1685 mc->mc_complete = NULL; 1686 mc->mc_private = NULL; 1687 1688 /* 1689 * By default, we set up to overwrite the command packet with 1690 * sense information. 1691 */ 1692 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1693 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1694 1695 mly_enqueue_free(mc); 1696 } 1697 1698 /******************************************************************************** 1699 * Map helper for command allocation. 1700 */ 1701 static void 1702 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1703 { 1704 struct mly_softc *sc = (struct mly_softc *)arg; 1705 1706 debug_called(1); 1707 1708 sc->mly_packetphys = segs[0].ds_addr; 1709 } 1710 1711 /******************************************************************************** 1712 * Allocate and initialise command and packet structures. 1713 * 1714 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1715 * allocation to that number. If we don't yet know how many commands the 1716 * controller supports, allocate a very small set (suitable for initialisation 1717 * purposes only). 1718 */ 1719 static int 1720 mly_alloc_commands(struct mly_softc *sc) 1721 { 1722 struct mly_command *mc; 1723 int i, ncmd; 1724 1725 if (sc->mly_controllerinfo == NULL) { 1726 ncmd = 4; 1727 } else { 1728 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1729 } 1730 1731 /* 1732 * Allocate enough space for all the command packets in one chunk and 1733 * map them permanently into controller-visible space. 1734 */ 1735 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1736 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1737 return(ENOMEM); 1738 } 1739 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1740 ncmd * sizeof(union mly_command_packet), 1741 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1742 return (ENOMEM); 1743 1744 for (i = 0; i < ncmd; i++) { 1745 mc = &sc->mly_command[i]; 1746 bzero(mc, sizeof(*mc)); 1747 mc->mc_sc = sc; 1748 mc->mc_slot = MLY_SLOT_START + i; 1749 mc->mc_packet = sc->mly_packet + i; 1750 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1751 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1752 mly_release_command(mc); 1753 } 1754 return(0); 1755 } 1756 1757 /******************************************************************************** 1758 * Free all the storage held by commands. 1759 * 1760 * Must be called with all commands on the free list. 1761 */ 1762 static void 1763 mly_release_commands(struct mly_softc *sc) 1764 { 1765 struct mly_command *mc; 1766 1767 /* throw away command buffer DMA maps */ 1768 while (mly_alloc_command(sc, &mc) == 0) 1769 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1770 1771 /* release the packet storage */ 1772 if (sc->mly_packet != NULL) { 1773 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1774 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1775 sc->mly_packet = NULL; 1776 } 1777 } 1778 1779 1780 /******************************************************************************** 1781 * Command-mapping helper function - populate this command's s/g table 1782 * with the s/g entries for its data. 1783 */ 1784 static void 1785 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1786 { 1787 struct mly_command *mc = (struct mly_command *)arg; 1788 struct mly_softc *sc = mc->mc_sc; 1789 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1790 struct mly_sg_entry *sg; 1791 int i, tabofs; 1792 1793 debug_called(2); 1794 1795 /* can we use the transfer structure directly? */ 1796 if (nseg <= 2) { 1797 sg = &gen->transfer.direct.sg[0]; 1798 gen->command_control.extended_sg_table = 0; 1799 } else { 1800 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1801 sg = sc->mly_sg_table + tabofs; 1802 gen->transfer.indirect.entries[0] = nseg; 1803 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1804 gen->command_control.extended_sg_table = 1; 1805 } 1806 1807 /* copy the s/g table */ 1808 for (i = 0; i < nseg; i++) { 1809 sg[i].physaddr = segs[i].ds_addr; 1810 sg[i].length = segs[i].ds_len; 1811 } 1812 1813 } 1814 1815 #if 0 1816 /******************************************************************************** 1817 * Command-mapping helper function - save the cdb's physical address. 1818 * 1819 * We don't support 'large' SCSI commands at this time, so this is unused. 1820 */ 1821 static void 1822 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1823 { 1824 struct mly_command *mc = (struct mly_command *)arg; 1825 1826 debug_called(2); 1827 1828 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1829 if ((segs[0].ds_addr % PAGE_SIZE) > 1830 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1831 panic("cdb crosses page boundary"); 1832 1833 /* fix up fields in the command packet */ 1834 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1835 } 1836 #endif 1837 1838 /******************************************************************************** 1839 * Map a command into controller-visible space 1840 */ 1841 static void 1842 mly_map_command(struct mly_command *mc) 1843 { 1844 struct mly_softc *sc = mc->mc_sc; 1845 1846 debug_called(2); 1847 1848 /* don't map more than once */ 1849 if (mc->mc_flags & MLY_CMD_MAPPED) 1850 return; 1851 1852 /* does the command have a data buffer? */ 1853 if (mc->mc_data != NULL) { 1854 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1855 mly_map_command_sg, mc, 0); 1856 1857 if (mc->mc_flags & MLY_CMD_DATAIN) 1858 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1859 if (mc->mc_flags & MLY_CMD_DATAOUT) 1860 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1861 } 1862 mc->mc_flags |= MLY_CMD_MAPPED; 1863 } 1864 1865 /******************************************************************************** 1866 * Unmap a command from controller-visible space 1867 */ 1868 static void 1869 mly_unmap_command(struct mly_command *mc) 1870 { 1871 struct mly_softc *sc = mc->mc_sc; 1872 1873 debug_called(2); 1874 1875 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1876 return; 1877 1878 /* does the command have a data buffer? */ 1879 if (mc->mc_data != NULL) { 1880 if (mc->mc_flags & MLY_CMD_DATAIN) 1881 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1882 if (mc->mc_flags & MLY_CMD_DATAOUT) 1883 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1884 1885 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1886 } 1887 mc->mc_flags &= ~MLY_CMD_MAPPED; 1888 } 1889 1890 1891 /******************************************************************************** 1892 ******************************************************************************** 1893 CAM interface 1894 ******************************************************************************** 1895 ********************************************************************************/ 1896 1897 /******************************************************************************** 1898 * Attach the physical and virtual SCSI busses to CAM. 1899 * 1900 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1901 * than the highest physical bus. Physical busses are only registered if 1902 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1903 * 1904 * When we refer to a "bus", we are referring to the bus number registered with 1905 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1906 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1907 * interchangeably. 1908 */ 1909 static int 1910 mly_cam_attach(struct mly_softc *sc) 1911 { 1912 struct cam_devq *devq; 1913 int chn, i; 1914 1915 debug_called(1); 1916 1917 /* 1918 * Allocate a devq for all our channels combined. 1919 */ 1920 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1921 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1922 return(ENOMEM); 1923 } 1924 1925 /* 1926 * If physical channel registration has been requested, register these first. 1927 * Note that we enable tagged command queueing for physical channels. 1928 */ 1929 if (ktestenv("hw.mly.register_physical_channels")) { 1930 chn = 0; 1931 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1932 1933 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1934 device_get_unit(sc->mly_dev), 1935 &sim_mplock, 1936 sc->mly_controllerinfo->maximum_parallel_commands, 1937 1, devq)) == NULL) { 1938 return(ENOMEM); 1939 } 1940 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1941 mly_printf(sc, "CAM XPT phsyical channel registration failed\n"); 1942 return(ENXIO); 1943 } 1944 debug(1, "registered physical channel %d", chn); 1945 } 1946 } 1947 1948 /* 1949 * Register our virtual channels, with bus numbers matching channel numbers. 1950 */ 1951 chn = sc->mly_controllerinfo->physical_channels_present; 1952 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1953 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1954 device_get_unit(sc->mly_dev), 1955 &sim_mplock, 1956 sc->mly_controllerinfo->maximum_parallel_commands, 1957 0, devq)) == NULL) { 1958 return(ENOMEM); 1959 } 1960 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1961 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1962 return(ENXIO); 1963 } 1964 debug(1, "registered virtual channel %d", chn); 1965 } 1966 1967 /* 1968 * This is the total number of channels that (might have been) registered with 1969 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1970 */ 1971 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1972 sc->mly_controllerinfo->virtual_channels_present; 1973 1974 return(0); 1975 } 1976 1977 /******************************************************************************** 1978 * Detach from CAM 1979 */ 1980 static void 1981 mly_cam_detach(struct mly_softc *sc) 1982 { 1983 int i; 1984 1985 debug_called(1); 1986 1987 for (i = 0; i < sc->mly_cam_channels; i++) { 1988 if (sc->mly_cam_sim[i] != NULL) { 1989 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 1990 cam_sim_free(sc->mly_cam_sim[i]); 1991 } 1992 } 1993 if (sc->mly_cam_devq != NULL) 1994 cam_simq_release(sc->mly_cam_devq); 1995 } 1996 1997 /************************************************************************ 1998 * Rescan a device. 1999 */ 2000 static void 2001 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2002 { 2003 union ccb *ccb; 2004 2005 debug_called(1); 2006 2007 ccb = kmalloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO); 2008 2009 if (xpt_create_path(&sc->mly_cam_path, xpt_periph, 2010 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2011 mly_printf(sc, "rescan failed (can't create path)\n"); 2012 kfree(ccb, M_TEMP); 2013 return; 2014 } 2015 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/); 2016 ccb->ccb_h.func_code = XPT_SCAN_LUN; 2017 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback; 2018 ccb->crcn.flags = CAM_FLAG_NONE; 2019 debug(1, "rescan target %d:%d", bus, target); 2020 xpt_action(ccb); 2021 } 2022 2023 static void 2024 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2025 { 2026 kfree(ccb, M_TEMP); 2027 } 2028 2029 /******************************************************************************** 2030 * Handle an action requested by CAM 2031 */ 2032 static void 2033 mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2034 { 2035 struct mly_softc *sc = cam_sim_softc(sim); 2036 2037 debug_called(2); 2038 2039 switch (ccb->ccb_h.func_code) { 2040 2041 /* perform SCSI I/O */ 2042 case XPT_SCSI_IO: 2043 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2044 return; 2045 break; 2046 2047 /* perform geometry calculations */ 2048 case XPT_CALC_GEOMETRY: 2049 { 2050 struct ccb_calc_geometry *ccg = &ccb->ccg; 2051 u_int32_t secs_per_cylinder; 2052 2053 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2054 2055 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2056 ccg->heads = 255; 2057 ccg->secs_per_track = 63; 2058 } else { /* MLY_BIOSGEOM_2G */ 2059 ccg->heads = 128; 2060 ccg->secs_per_track = 32; 2061 } 2062 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2063 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2064 ccb->ccb_h.status = CAM_REQ_CMP; 2065 break; 2066 } 2067 2068 /* handle path attribute inquiry */ 2069 case XPT_PATH_INQ: 2070 { 2071 struct ccb_pathinq *cpi = &ccb->cpi; 2072 2073 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2074 2075 cpi->version_num = 1; 2076 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2077 cpi->target_sprt = 0; 2078 cpi->hba_misc = 0; 2079 cpi->max_target = MLY_MAX_TARGETS - 1; 2080 cpi->max_lun = MLY_MAX_LUNS - 1; 2081 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2082 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2083 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 2084 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2085 cpi->unit_number = cam_sim_unit(sim); 2086 cpi->bus_id = cam_sim_bus(sim); 2087 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2088 cpi->transport = XPORT_SPI; 2089 cpi->transport_version = 2; 2090 cpi->protocol = PROTO_SCSI; 2091 cpi->protocol_version = SCSI_REV_2; 2092 ccb->ccb_h.status = CAM_REQ_CMP; 2093 break; 2094 } 2095 2096 case XPT_GET_TRAN_SETTINGS: 2097 { 2098 struct ccb_trans_settings *cts = &ccb->cts; 2099 int bus, target; 2100 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2101 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2102 2103 cts->protocol = PROTO_SCSI; 2104 cts->protocol_version = SCSI_REV_2; 2105 cts->transport = XPORT_SPI; 2106 cts->transport_version = 2; 2107 2108 scsi->flags = 0; 2109 scsi->valid = 0; 2110 spi->flags = 0; 2111 spi->valid = 0; 2112 2113 bus = cam_sim_bus(sim); 2114 target = cts->ccb_h.target_id; 2115 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2116 /* logical device? */ 2117 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2118 /* nothing special for these */ 2119 /* physical device? */ 2120 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2121 /* allow CAM to try tagged transactions */ 2122 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2123 scsi->valid |= CTS_SCSI_VALID_TQ; 2124 2125 /* convert speed (MHz) to usec */ 2126 if (sc->mly_btl[bus][target].mb_speed == 0) { 2127 spi->sync_period = 1000000 / 5; 2128 } else { 2129 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2130 } 2131 2132 /* convert bus width to CAM internal encoding */ 2133 switch (sc->mly_btl[bus][target].mb_width) { 2134 case 32: 2135 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2136 break; 2137 case 16: 2138 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2139 break; 2140 case 8: 2141 default: 2142 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2143 break; 2144 } 2145 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2146 2147 /* not a device, bail out */ 2148 } else { 2149 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2150 break; 2151 } 2152 2153 /* disconnect always OK */ 2154 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2155 spi->valid |= CTS_SPI_VALID_DISC; 2156 2157 cts->ccb_h.status = CAM_REQ_CMP; 2158 break; 2159 } 2160 2161 default: /* we can't do this */ 2162 debug(2, "unsupported func_code = 0x%x", ccb->ccb_h.func_code); 2163 ccb->ccb_h.status = CAM_REQ_INVALID; 2164 break; 2165 } 2166 2167 xpt_done(ccb); 2168 } 2169 2170 /******************************************************************************** 2171 * Handle an I/O operation requested by CAM 2172 */ 2173 static int 2174 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2175 { 2176 struct mly_softc *sc = cam_sim_softc(sim); 2177 struct mly_command *mc; 2178 struct mly_command_scsi_small *ss; 2179 int bus, target; 2180 int error; 2181 2182 bus = cam_sim_bus(sim); 2183 target = csio->ccb_h.target_id; 2184 2185 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2186 2187 /* validate bus number */ 2188 if (!MLY_BUS_IS_VALID(sc, bus)) { 2189 debug(0, " invalid bus %d", bus); 2190 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2191 } 2192 2193 /* check for I/O attempt to a protected device */ 2194 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2195 debug(2, " device protected"); 2196 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2197 } 2198 2199 /* check for I/O attempt to nonexistent device */ 2200 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2201 debug(2, " device %d:%d does not exist", bus, target); 2202 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2203 } 2204 2205 /* XXX increase if/when we support large SCSI commands */ 2206 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2207 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2208 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2209 } 2210 2211 /* check that the CDB pointer is not to a physical address */ 2212 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2213 debug(0, " CDB pointer is to physical address"); 2214 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2215 } 2216 2217 /* if there is data transfer, it must be to/from a virtual address */ 2218 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2219 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2220 debug(0, " data pointer is to physical address"); 2221 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2222 } 2223 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2224 debug(0, " data has premature s/g setup"); 2225 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2226 } 2227 } 2228 2229 /* abandon aborted ccbs or those that have failed validation */ 2230 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2231 debug(2, "abandoning CCB due to abort/validation failure"); 2232 return(EINVAL); 2233 } 2234 2235 /* 2236 * Get a command, or push the ccb back to CAM and freeze the queue. 2237 */ 2238 if ((error = mly_alloc_command(sc, &mc))) { 2239 crit_enter(); 2240 xpt_freeze_simq(sim, 1); 2241 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2242 sc->mly_qfrzn_cnt++; 2243 crit_exit(); 2244 return(error); 2245 } 2246 2247 /* build the command */ 2248 mc->mc_data = csio->data_ptr; 2249 mc->mc_length = csio->dxfer_len; 2250 mc->mc_complete = mly_cam_complete; 2251 mc->mc_private = csio; 2252 2253 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2254 csio->ccb_h.sim_priv.entries[0].field = bus; 2255 2256 /* build the packet for the controller */ 2257 ss = &mc->mc_packet->scsi_small; 2258 ss->opcode = MDACMD_SCSI; 2259 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2260 ss->command_control.disable_disconnect = 1; 2261 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2262 ss->command_control.data_direction = MLY_CCB_WRITE; 2263 ss->data_size = csio->dxfer_len; 2264 ss->addr.phys.lun = csio->ccb_h.target_lun; 2265 ss->addr.phys.target = csio->ccb_h.target_id; 2266 ss->addr.phys.channel = bus; 2267 if (csio->ccb_h.timeout < (60 * 1000)) { 2268 ss->timeout.value = csio->ccb_h.timeout / 1000; 2269 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2270 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2271 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2272 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2273 } else { 2274 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2275 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2276 } 2277 ss->maximum_sense_size = csio->sense_len; 2278 ss->cdb_length = csio->cdb_len; 2279 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2280 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2281 } else { 2282 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2283 } 2284 2285 /* give the command to the controller */ 2286 if ((error = mly_start(mc))) { 2287 crit_enter(); 2288 xpt_freeze_simq(sim, 1); 2289 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2290 sc->mly_qfrzn_cnt++; 2291 crit_exit(); 2292 return(error); 2293 } 2294 2295 return(0); 2296 } 2297 2298 /******************************************************************************** 2299 * Check for possibly-completed commands. 2300 */ 2301 static void 2302 mly_cam_poll(struct cam_sim *sim) 2303 { 2304 struct mly_softc *sc = cam_sim_softc(sim); 2305 2306 debug_called(2); 2307 2308 mly_done(sc); 2309 } 2310 2311 /******************************************************************************** 2312 * Handle completion of a command - pass results back through the CCB 2313 */ 2314 static void 2315 mly_cam_complete(struct mly_command *mc) 2316 { 2317 struct mly_softc *sc = mc->mc_sc; 2318 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2319 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2320 struct mly_btl *btl; 2321 u_int8_t cmd; 2322 int bus, target; 2323 2324 debug_called(2); 2325 2326 csio->scsi_status = mc->mc_status; 2327 switch(mc->mc_status) { 2328 case SCSI_STATUS_OK: 2329 /* 2330 * In order to report logical device type and status, we overwrite 2331 * the result of the INQUIRY command to logical devices. 2332 */ 2333 bus = csio->ccb_h.sim_priv.entries[0].field; 2334 target = csio->ccb_h.target_id; 2335 /* XXX validate bus/target? */ 2336 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2337 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2338 cmd = *csio->cdb_io.cdb_ptr; 2339 } else { 2340 cmd = csio->cdb_io.cdb_bytes[0]; 2341 } 2342 if (cmd == INQUIRY) { 2343 btl = &sc->mly_btl[bus][target]; 2344 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2345 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2346 padstr(inq->revision, "", 4); 2347 } 2348 } 2349 2350 debug(2, "SCSI_STATUS_OK"); 2351 csio->ccb_h.status = CAM_REQ_CMP; 2352 break; 2353 2354 case SCSI_STATUS_CHECK_COND: 2355 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2356 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2357 bzero(&csio->sense_data, SSD_FULL_SIZE); 2358 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2359 csio->sense_len = mc->mc_sense; 2360 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2361 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2362 break; 2363 2364 case SCSI_STATUS_BUSY: 2365 debug(1, "SCSI_STATUS_BUSY"); 2366 csio->ccb_h.status = CAM_SCSI_BUSY; 2367 break; 2368 2369 default: 2370 debug(1, "unknown status 0x%x", csio->scsi_status); 2371 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2372 break; 2373 } 2374 2375 crit_enter(); 2376 if (sc->mly_qfrzn_cnt) { 2377 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2378 sc->mly_qfrzn_cnt--; 2379 } 2380 crit_exit(); 2381 2382 xpt_done((union ccb *)csio); 2383 mly_release_command(mc); 2384 } 2385 2386 /******************************************************************************** 2387 * Find a peripheral attahed at (bus),(target) 2388 */ 2389 static struct cam_periph * 2390 mly_find_periph(struct mly_softc *sc, int bus, int target) 2391 { 2392 struct cam_periph *periph; 2393 struct cam_path *path; 2394 int status; 2395 2396 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2397 if (status == CAM_REQ_CMP) { 2398 periph = cam_periph_find(path, NULL); 2399 xpt_free_path(path); 2400 } else { 2401 periph = NULL; 2402 } 2403 return(periph); 2404 } 2405 2406 /******************************************************************************** 2407 * Name the device at (bus)(target) 2408 */ 2409 static int 2410 mly_name_device(struct mly_softc *sc, int bus, int target) 2411 { 2412 struct cam_periph *periph; 2413 2414 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2415 ksprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2416 return(0); 2417 } 2418 sc->mly_btl[bus][target].mb_name[0] = 0; 2419 return(ENOENT); 2420 } 2421 2422 /******************************************************************************** 2423 ******************************************************************************** 2424 Hardware Control 2425 ******************************************************************************** 2426 ********************************************************************************/ 2427 2428 /******************************************************************************** 2429 * Handshake with the firmware while the card is being initialised. 2430 */ 2431 static int 2432 mly_fwhandshake(struct mly_softc *sc) 2433 { 2434 u_int8_t error, param0, param1; 2435 int spinup = 0; 2436 2437 debug_called(1); 2438 2439 /* set HM_STSACK and let the firmware initialise */ 2440 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2441 DELAY(1000); /* too short? */ 2442 2443 /* if HM_STSACK is still true, the controller is initialising */ 2444 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2445 return(0); 2446 mly_printf(sc, "controller initialisation started\n"); 2447 2448 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2449 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2450 /* check for a message */ 2451 if (MLY_ERROR_VALID(sc)) { 2452 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2453 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2454 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2455 2456 switch(error) { 2457 case MLY_MSG_SPINUP: 2458 if (!spinup) { 2459 mly_printf(sc, "drive spinup in progress\n"); 2460 spinup = 1; /* only print this once (should print drive being spun?) */ 2461 } 2462 break; 2463 case MLY_MSG_RACE_RECOVERY_FAIL: 2464 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2465 break; 2466 case MLY_MSG_RACE_IN_PROGRESS: 2467 mly_printf(sc, "mirror race recovery in progress\n"); 2468 break; 2469 case MLY_MSG_RACE_ON_CRITICAL: 2470 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2471 break; 2472 case MLY_MSG_PARITY_ERROR: 2473 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2474 return(ENXIO); 2475 default: 2476 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2477 } 2478 } 2479 } 2480 return(0); 2481 } 2482 2483 /******************************************************************************** 2484 ******************************************************************************** 2485 Debugging and Diagnostics 2486 ******************************************************************************** 2487 ********************************************************************************/ 2488 2489 /******************************************************************************** 2490 * Print some information about the controller. 2491 */ 2492 static void 2493 mly_describe_controller(struct mly_softc *sc) 2494 { 2495 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2496 2497 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2498 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2499 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2500 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2501 mi->memory_size); 2502 2503 if (bootverbose) { 2504 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2505 mly_describe_code(mly_table_oemname, mi->oem_information), 2506 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2507 mi->interface_speed, mi->interface_width, mi->interface_name); 2508 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2509 mi->memory_size, mi->memory_speed, mi->memory_width, 2510 mly_describe_code(mly_table_memorytype, mi->memory_type), 2511 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2512 mi->cache_size); 2513 mly_printf(sc, "CPU: %s @ %dMHZ\n", 2514 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2515 if (mi->l2cache_size != 0) 2516 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2517 if (mi->exmemory_size != 0) 2518 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2519 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2520 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2521 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2522 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2523 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2524 mi->maximum_block_count, mi->maximum_sg_entries); 2525 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2526 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2527 mly_printf(sc, "physical devices present %d\n", 2528 mi->physical_devices_present); 2529 mly_printf(sc, "physical disks present/offline %d/%d\n", 2530 mi->physical_disks_present, mi->physical_disks_offline); 2531 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2532 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2533 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2534 mi->virtual_channels_possible); 2535 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2536 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2537 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2538 } 2539 } 2540 2541 #ifdef MLY_DEBUG 2542 /******************************************************************************** 2543 * Print some controller state 2544 */ 2545 static void 2546 mly_printstate(struct mly_softc *sc) 2547 { 2548 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2549 MLY_GET_REG(sc, sc->mly_idbr), 2550 MLY_GET_REG(sc, sc->mly_odbr), 2551 MLY_GET_REG(sc, sc->mly_error_status), 2552 sc->mly_idbr, 2553 sc->mly_odbr, 2554 sc->mly_error_status); 2555 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2556 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2557 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2558 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2559 MLY_GET_REG(sc, sc->mly_command_mailbox), 2560 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2561 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2562 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2563 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2564 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2565 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2566 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2567 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2568 MLY_GET_REG(sc, sc->mly_status_mailbox), 2569 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2570 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2571 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2572 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2573 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2574 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2575 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2576 mly_printf(sc, " %04x %08x\n", 2577 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2578 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2579 } 2580 2581 struct mly_softc *mly_softc0 = NULL; 2582 void 2583 mly_printstate0(void) 2584 { 2585 if (mly_softc0 != NULL) 2586 mly_printstate(mly_softc0); 2587 } 2588 2589 /******************************************************************************** 2590 * Print a command 2591 */ 2592 static void 2593 mly_print_command(struct mly_command *mc) 2594 { 2595 struct mly_softc *sc = mc->mc_sc; 2596 2597 mly_printf(sc, "COMMAND @ %p\n", mc); 2598 mly_printf(sc, " slot %d\n", mc->mc_slot); 2599 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2600 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2601 mly_printf(sc, " resid %d\n", mc->mc_resid); 2602 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2603 if (mc->mc_packet != NULL) 2604 mly_print_packet(mc); 2605 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2606 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2607 mly_printf(sc, " complete %p\n", mc->mc_complete); 2608 mly_printf(sc, " private %p\n", mc->mc_private); 2609 } 2610 2611 /******************************************************************************** 2612 * Print a command packet 2613 */ 2614 static void 2615 mly_print_packet(struct mly_command *mc) 2616 { 2617 struct mly_softc *sc = mc->mc_sc; 2618 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2619 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2620 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2621 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2622 int transfer; 2623 2624 mly_printf(sc, " command_id %d\n", ge->command_id); 2625 mly_printf(sc, " opcode %d\n", ge->opcode); 2626 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2627 ge->command_control.force_unit_access, 2628 ge->command_control.disable_page_out, 2629 ge->command_control.extended_sg_table, 2630 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2631 ge->command_control.no_auto_sense, 2632 ge->command_control.disable_disconnect); 2633 mly_printf(sc, " data_size %d\n", ge->data_size); 2634 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2635 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2636 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2637 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2638 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2639 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2640 mly_printf(sc, " timeout %d %s\n", 2641 ge->timeout.value, 2642 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2643 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2644 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2645 switch(ge->opcode) { 2646 case MDACMD_SCSIPT: 2647 case MDACMD_SCSI: 2648 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2649 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2650 transfer = 1; 2651 break; 2652 case MDACMD_SCSILC: 2653 case MDACMD_SCSILCPT: 2654 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2655 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2656 transfer = 1; 2657 break; 2658 case MDACMD_IOCTL: 2659 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2660 switch(io->sub_ioctl) { 2661 case MDACIOCTL_SETMEMORYMAILBOX: 2662 mly_printf(sc, " health_buffer_size %d\n", 2663 io->param.setmemorymailbox.health_buffer_size); 2664 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2665 io->param.setmemorymailbox.health_buffer_physaddr); 2666 mly_printf(sc, " command_mailbox 0x%llx\n", 2667 io->param.setmemorymailbox.command_mailbox_physaddr); 2668 mly_printf(sc, " status_mailbox 0x%llx\n", 2669 io->param.setmemorymailbox.status_mailbox_physaddr); 2670 transfer = 0; 2671 break; 2672 2673 case MDACIOCTL_SETREALTIMECLOCK: 2674 case MDACIOCTL_GETHEALTHSTATUS: 2675 case MDACIOCTL_GETCONTROLLERINFO: 2676 case MDACIOCTL_GETLOGDEVINFOVALID: 2677 case MDACIOCTL_GETPHYSDEVINFOVALID: 2678 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2679 case MDACIOCTL_GETLOGDEVSTATISTICS: 2680 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2681 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2682 case MDACIOCTL_CREATENEWCONF: 2683 case MDACIOCTL_ADDNEWCONF: 2684 case MDACIOCTL_GETDEVCONFINFO: 2685 case MDACIOCTL_GETFREESPACELIST: 2686 case MDACIOCTL_MORE: 2687 case MDACIOCTL_SETPHYSDEVPARAMETER: 2688 case MDACIOCTL_GETPHYSDEVPARAMETER: 2689 case MDACIOCTL_GETLOGDEVPARAMETER: 2690 case MDACIOCTL_SETLOGDEVPARAMETER: 2691 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2692 transfer = 1; 2693 break; 2694 2695 case MDACIOCTL_GETEVENT: 2696 mly_printf(sc, " event %d\n", 2697 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2698 transfer = 1; 2699 break; 2700 2701 case MDACIOCTL_SETRAIDDEVSTATE: 2702 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2703 transfer = 0; 2704 break; 2705 2706 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2707 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2708 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2709 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2710 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2711 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2712 transfer = 0; 2713 break; 2714 2715 case MDACIOCTL_GETGROUPCONFINFO: 2716 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2717 transfer = 1; 2718 break; 2719 2720 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2721 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2722 case MDACIOCTL_STARTDISOCVERY: 2723 case MDACIOCTL_INITPHYSDEVSTART: 2724 case MDACIOCTL_INITPHYSDEVSTOP: 2725 case MDACIOCTL_INITRAIDDEVSTART: 2726 case MDACIOCTL_INITRAIDDEVSTOP: 2727 case MDACIOCTL_REBUILDRAIDDEVSTART: 2728 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2729 case MDACIOCTL_MAKECONSISTENTDATASTART: 2730 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2731 case MDACIOCTL_CONSISTENCYCHECKSTART: 2732 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2733 case MDACIOCTL_RESETDEVICE: 2734 case MDACIOCTL_FLUSHDEVICEDATA: 2735 case MDACIOCTL_PAUSEDEVICE: 2736 case MDACIOCTL_UNPAUSEDEVICE: 2737 case MDACIOCTL_LOCATEDEVICE: 2738 case MDACIOCTL_SETMASTERSLAVEMODE: 2739 case MDACIOCTL_DELETERAIDDEV: 2740 case MDACIOCTL_REPLACEINTERNALDEV: 2741 case MDACIOCTL_CLEARCONF: 2742 case MDACIOCTL_GETCONTROLLERPARAMETER: 2743 case MDACIOCTL_SETCONTRLLERPARAMETER: 2744 case MDACIOCTL_CLEARCONFSUSPMODE: 2745 case MDACIOCTL_STOREIMAGE: 2746 case MDACIOCTL_READIMAGE: 2747 case MDACIOCTL_FLASHIMAGES: 2748 case MDACIOCTL_RENAMERAIDDEV: 2749 default: /* no idea what to print */ 2750 transfer = 0; 2751 break; 2752 } 2753 break; 2754 2755 case MDACMD_IOCTLCHECK: 2756 case MDACMD_MEMCOPY: 2757 default: 2758 transfer = 0; 2759 break; /* print nothing */ 2760 } 2761 if (transfer) { 2762 if (ge->command_control.extended_sg_table) { 2763 mly_printf(sc, " sg table 0x%llx/%d\n", 2764 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2765 } else { 2766 mly_printf(sc, " 0000 0x%llx/%lld\n", 2767 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2768 mly_printf(sc, " 0001 0x%llx/%lld\n", 2769 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2770 } 2771 } 2772 } 2773 2774 /******************************************************************************** 2775 * Panic in a slightly informative fashion 2776 */ 2777 static void 2778 mly_panic(struct mly_softc *sc, char *reason) 2779 { 2780 mly_printstate(sc); 2781 panic(reason); 2782 } 2783 2784 /******************************************************************************** 2785 * Print queue statistics, callable from DDB. 2786 */ 2787 void 2788 mly_print_controller(int controller) 2789 { 2790 struct mly_softc *sc; 2791 2792 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2793 kprintf("mly: controller %d invalid\n", controller); 2794 } else { 2795 device_printf(sc->mly_dev, "queue curr max\n"); 2796 device_printf(sc->mly_dev, "free %04d/%04d\n", 2797 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2798 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2799 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2800 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2801 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2802 } 2803 } 2804 #endif 2805 2806 2807 /******************************************************************************** 2808 ******************************************************************************** 2809 Control device interface 2810 ******************************************************************************** 2811 ********************************************************************************/ 2812 2813 /******************************************************************************** 2814 * Accept an open operation on the control device. 2815 */ 2816 static int 2817 mly_user_open(struct dev_open_args *ap) 2818 { 2819 cdev_t dev = ap->a_head.a_dev; 2820 int unit = minor(dev); 2821 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2822 2823 sc->mly_state |= MLY_STATE_OPEN; 2824 return(0); 2825 } 2826 2827 /******************************************************************************** 2828 * Accept the last close on the control device. 2829 */ 2830 static int 2831 mly_user_close(struct dev_close_args *ap) 2832 { 2833 cdev_t dev = ap->a_head.a_dev; 2834 int unit = minor(dev); 2835 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2836 2837 sc->mly_state &= ~MLY_STATE_OPEN; 2838 return (0); 2839 } 2840 2841 /******************************************************************************** 2842 * Handle controller-specific control operations. 2843 */ 2844 static int 2845 mly_user_ioctl(struct dev_ioctl_args *ap) 2846 { 2847 cdev_t dev = ap->a_head.a_dev; 2848 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2849 struct mly_user_command *uc = (struct mly_user_command *)ap->a_data; 2850 struct mly_user_health *uh = (struct mly_user_health *)ap->a_data; 2851 2852 switch(ap->a_cmd) { 2853 case MLYIO_COMMAND: 2854 return(mly_user_command(sc, uc)); 2855 case MLYIO_HEALTH: 2856 return(mly_user_health(sc, uh)); 2857 default: 2858 return(ENOIOCTL); 2859 } 2860 } 2861 2862 /******************************************************************************** 2863 * Execute a command passed in from userspace. 2864 * 2865 * The control structure contains the actual command for the controller, as well 2866 * as the user-space data pointer and data size, and an optional sense buffer 2867 * size/pointer. On completion, the data size is adjusted to the command 2868 * residual, and the sense buffer size to the size of the returned sense data. 2869 * 2870 */ 2871 static int 2872 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2873 { 2874 struct mly_command *mc; 2875 int error; 2876 2877 /* allocate a command */ 2878 if (mly_alloc_command(sc, &mc)) { 2879 error = ENOMEM; 2880 goto out; /* XXX Linux version will wait for a command */ 2881 } 2882 2883 /* handle data size/direction */ 2884 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2885 if (mc->mc_length > 0) 2886 mc->mc_data = kmalloc(mc->mc_length, M_DEVBUF, M_INTWAIT); 2887 if (uc->DataTransferLength > 0) { 2888 mc->mc_flags |= MLY_CMD_DATAIN; 2889 bzero(mc->mc_data, mc->mc_length); 2890 } 2891 if (uc->DataTransferLength < 0) { 2892 mc->mc_flags |= MLY_CMD_DATAOUT; 2893 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2894 goto out; 2895 } 2896 2897 /* copy the controller command */ 2898 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2899 2900 /* clear command completion handler so that we get woken up */ 2901 mc->mc_complete = NULL; 2902 2903 /* execute the command */ 2904 if ((error = mly_start(mc)) != 0) 2905 goto out; 2906 crit_enter(); 2907 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2908 tsleep(mc, 0, "mlyioctl", 0); 2909 crit_exit(); 2910 2911 /* return the data to userspace */ 2912 if (uc->DataTransferLength > 0) 2913 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2914 goto out; 2915 2916 /* return the sense buffer to userspace */ 2917 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2918 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2919 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2920 goto out; 2921 } 2922 2923 /* return command results to userspace (caller will copy out) */ 2924 uc->DataTransferLength = mc->mc_resid; 2925 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2926 uc->CommandStatus = mc->mc_status; 2927 error = 0; 2928 2929 out: 2930 if (mc->mc_data != NULL) 2931 kfree(mc->mc_data, M_DEVBUF); 2932 if (mc != NULL) 2933 mly_release_command(mc); 2934 return(error); 2935 } 2936 2937 /******************************************************************************** 2938 * Return health status to userspace. If the health change index in the user 2939 * structure does not match that currently exported by the controller, we 2940 * return the current status immediately. Otherwise, we block until either 2941 * interrupted or new status is delivered. 2942 */ 2943 static int 2944 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2945 { 2946 struct mly_health_status mh; 2947 int error; 2948 2949 /* fetch the current health status from userspace */ 2950 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2951 return(error); 2952 2953 /* spin waiting for a status update */ 2954 crit_enter(); 2955 error = EWOULDBLOCK; 2956 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2957 error = tsleep(&sc->mly_event_change, PCATCH, "mlyhealth", 0); 2958 crit_exit(); 2959 2960 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2961 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2962 sizeof(uh->HealthStatusBuffer)); 2963 return(error); 2964 } 2965 2966 static int 2967 mly_timeout(struct mly_softc *sc) 2968 { 2969 struct mly_command *mc; 2970 int deadline; 2971 2972 deadline = time_second - MLY_CMD_TIMEOUT; 2973 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2974 if ((mc->mc_timestamp < deadline)) { 2975 device_printf(sc->mly_dev, 2976 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2977 (int)(time_second - mc->mc_timestamp)); 2978 } 2979 } 2980 2981 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 2982 (timeout_t *)mly_timeout, sc); 2983 2984 return (0); 2985 } 2986