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 1.20 2008/02/10 00:01:03 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/ioccom.h> 40 #include <sys/stat.h> 41 #include <sys/rman.h> 42 #include <sys/thread2.h> 43 44 #include <bus/cam/cam.h> 45 #include <bus/cam/cam_ccb.h> 46 #include <bus/cam/cam_periph.h> 47 #include <bus/cam/cam_sim.h> 48 #include <bus/cam/cam_xpt_sim.h> 49 #include <bus/cam/scsi/scsi_all.h> 50 #include <bus/cam/scsi/scsi_message.h> 51 52 #include <bus/pci/pcireg.h> 53 #include <bus/pci/pcivar.h> 54 55 #include "mlyreg.h" 56 #include "mlyio.h" 57 #include "mlyvar.h" 58 #include "mly_tables.h" 59 60 static int mly_probe(device_t dev); 61 static int mly_attach(device_t dev); 62 static int mly_pci_attach(struct mly_softc *sc); 63 static int mly_detach(device_t dev); 64 static int mly_shutdown(device_t dev); 65 static void mly_intr(void *arg); 66 67 static int mly_sg_map(struct mly_softc *sc); 68 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 69 static int mly_mmbox_map(struct mly_softc *sc); 70 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 71 static void mly_free(struct mly_softc *sc); 72 73 static int mly_get_controllerinfo(struct mly_softc *sc); 74 static void mly_scan_devices(struct mly_softc *sc); 75 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 76 static void mly_complete_rescan(struct mly_command *mc); 77 static int mly_get_eventstatus(struct mly_softc *sc); 78 static int mly_enable_mmbox(struct mly_softc *sc); 79 static int mly_flush(struct mly_softc *sc); 80 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 81 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 82 static void mly_check_event(struct mly_softc *sc); 83 static void mly_fetch_event(struct mly_softc *sc); 84 static void mly_complete_event(struct mly_command *mc); 85 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 86 static void mly_periodic(void *data); 87 88 static int mly_immediate_command(struct mly_command *mc); 89 static int mly_start(struct mly_command *mc); 90 static void mly_done(struct mly_softc *sc); 91 static void mly_complete(void *context, int pending); 92 93 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 94 static void mly_release_command(struct mly_command *mc); 95 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 96 static int mly_alloc_commands(struct mly_softc *sc); 97 static void mly_release_commands(struct mly_softc *sc); 98 static void mly_map_command(struct mly_command *mc); 99 static void mly_unmap_command(struct mly_command *mc); 100 101 static int mly_cam_attach(struct mly_softc *sc); 102 static void mly_cam_detach(struct mly_softc *sc); 103 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 104 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 105 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 106 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 107 static void mly_cam_poll(struct cam_sim *sim); 108 static void mly_cam_complete(struct mly_command *mc); 109 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 110 static int mly_name_device(struct mly_softc *sc, int bus, int target); 111 112 static int mly_fwhandshake(struct mly_softc *sc); 113 114 static void mly_describe_controller(struct mly_softc *sc); 115 #ifdef MLY_DEBUG 116 static void mly_printstate(struct mly_softc *sc); 117 static void mly_print_command(struct mly_command *mc); 118 static void mly_print_packet(struct mly_command *mc); 119 static void mly_panic(struct mly_softc *sc, char *reason); 120 #endif 121 void mly_print_controller(int controller); 122 static int mly_timeout(struct mly_softc *sc); 123 124 125 static d_open_t mly_user_open; 126 static d_close_t mly_user_close; 127 static d_ioctl_t mly_user_ioctl; 128 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 129 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 130 131 #define MLY_CMD_TIMEOUT 20 132 133 static device_method_t mly_methods[] = { 134 /* Device interface */ 135 DEVMETHOD(device_probe, mly_probe), 136 DEVMETHOD(device_attach, mly_attach), 137 DEVMETHOD(device_detach, mly_detach), 138 DEVMETHOD(device_shutdown, mly_shutdown), 139 { 0, 0 } 140 }; 141 142 static driver_t mly_pci_driver = { 143 "mly", 144 mly_methods, 145 sizeof(struct mly_softc) 146 }; 147 148 static devclass_t mly_devclass; 149 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, 0, 0); 150 151 #define MLY_CDEV_MAJOR 158 152 153 static struct dev_ops mly_ops = { 154 { "mly", MLY_CDEV_MAJOR, 0 }, 155 .d_open = mly_user_open, 156 .d_close = mly_user_close, 157 .d_ioctl = mly_user_ioctl, 158 }; 159 160 /******************************************************************************** 161 ******************************************************************************** 162 Device Interface 163 ******************************************************************************** 164 ********************************************************************************/ 165 166 static struct mly_ident 167 { 168 u_int16_t vendor; 169 u_int16_t device; 170 u_int16_t subvendor; 171 u_int16_t subdevice; 172 int hwif; 173 char *desc; 174 } mly_identifiers[] = { 175 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 176 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 177 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 178 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 179 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 180 {0, 0, 0, 0, 0, 0} 181 }; 182 183 /******************************************************************************** 184 * Compare the provided PCI device with the list we support. 185 */ 186 static int 187 mly_probe(device_t dev) 188 { 189 struct mly_ident *m; 190 191 debug_called(1); 192 193 for (m = mly_identifiers; m->vendor != 0; m++) { 194 if ((m->vendor == pci_get_vendor(dev)) && 195 (m->device == pci_get_device(dev)) && 196 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 197 (m->subdevice == pci_get_subdevice(dev))))) { 198 199 device_set_desc(dev, m->desc); 200 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 201 } 202 } 203 return(ENXIO); 204 } 205 206 /******************************************************************************** 207 * Initialise the controller and softc 208 */ 209 static int 210 mly_attach(device_t dev) 211 { 212 struct mly_softc *sc = device_get_softc(dev); 213 int error; 214 215 debug_called(1); 216 217 sc->mly_dev = dev; 218 219 #ifdef MLY_DEBUG 220 if (device_get_unit(sc->mly_dev) == 0) 221 mly_softc0 = sc; 222 #endif 223 224 /* 225 * Do PCI-specific initialisation. 226 */ 227 if ((error = mly_pci_attach(sc)) != 0) 228 goto out; 229 230 callout_init(&sc->mly_periodic); 231 callout_init(&sc->mly_timeout); 232 233 /* 234 * Initialise per-controller queues. 235 */ 236 mly_initq_free(sc); 237 mly_initq_busy(sc); 238 mly_initq_complete(sc); 239 240 /* 241 * Initialise command-completion task. 242 */ 243 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 244 245 /* disable interrupts before we start talking to the controller */ 246 MLY_MASK_INTERRUPTS(sc); 247 248 /* 249 * Wait for the controller to come ready, handshake with the firmware if required. 250 * This is typically only necessary on platforms where the controller BIOS does not 251 * run. 252 */ 253 if ((error = mly_fwhandshake(sc))) 254 goto out; 255 256 /* 257 * Allocate initial command buffers. 258 */ 259 if ((error = mly_alloc_commands(sc))) 260 goto out; 261 262 /* 263 * Obtain controller feature information 264 */ 265 if ((error = mly_get_controllerinfo(sc))) 266 goto out; 267 268 /* 269 * Reallocate command buffers now we know how many we want. 270 */ 271 mly_release_commands(sc); 272 if ((error = mly_alloc_commands(sc))) 273 goto out; 274 275 /* 276 * Get the current event counter for health purposes, populate the initial 277 * health status buffer. 278 */ 279 if ((error = mly_get_eventstatus(sc))) 280 goto out; 281 282 /* 283 * Enable memory-mailbox mode. 284 */ 285 if ((error = mly_enable_mmbox(sc))) 286 goto out; 287 288 /* 289 * Attach to CAM. 290 */ 291 if ((error = mly_cam_attach(sc))) 292 goto out; 293 294 /* 295 * Print a little information about the controller 296 */ 297 mly_describe_controller(sc); 298 299 /* 300 * Mark all attached devices for rescan. 301 */ 302 mly_scan_devices(sc); 303 304 /* 305 * Instigate the first status poll immediately. Rescan completions won't 306 * happen until interrupts are enabled, which should still be before 307 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 308 */ 309 mly_periodic((void *)sc); 310 311 /* 312 * Create the control device. 313 */ 314 dev_ops_add(&mly_ops, -1, device_get_unit(sc->mly_dev)); 315 sc->mly_dev_t = make_dev(&mly_ops, device_get_unit(sc->mly_dev), 316 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 317 "mly%d", device_get_unit(sc->mly_dev)); 318 sc->mly_dev_t->si_drv1 = sc; 319 320 /* enable interrupts now */ 321 MLY_UNMASK_INTERRUPTS(sc); 322 323 #ifdef MLY_DEBUG 324 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 325 (timeout_t *)mly_timeout, sc); 326 #endif 327 328 out: 329 if (error != 0) 330 mly_free(sc); 331 return(error); 332 } 333 334 /******************************************************************************** 335 * Perform PCI-specific initialisation. 336 */ 337 static int 338 mly_pci_attach(struct mly_softc *sc) 339 { 340 int i, error; 341 u_int32_t command; 342 343 debug_called(1); 344 345 /* assume failure is 'not configured' */ 346 error = ENXIO; 347 348 /* 349 * Verify that the adapter is correctly set up in PCI space. 350 * 351 * XXX we shouldn't do this; the PCI code should. 352 */ 353 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 354 command |= PCIM_CMD_BUSMASTEREN; 355 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 356 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 357 if (!(command & PCIM_CMD_BUSMASTEREN)) { 358 mly_printf(sc, "can't enable busmaster feature\n"); 359 goto fail; 360 } 361 if ((command & PCIM_CMD_MEMEN) == 0) { 362 mly_printf(sc, "memory window not available\n"); 363 goto fail; 364 } 365 366 /* 367 * Allocate the PCI register window. 368 */ 369 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 370 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 371 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 372 mly_printf(sc, "can't allocate register window\n"); 373 goto fail; 374 } 375 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 376 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 377 378 /* 379 * Allocate and connect our interrupt. 380 */ 381 sc->mly_irq_rid = 0; 382 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 383 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 384 mly_printf(sc, "can't allocate interrupt\n"); 385 goto fail; 386 } 387 error = bus_setup_intr(sc->mly_dev, sc->mly_irq, 0, 388 mly_intr, sc, &sc->mly_intr, NULL); 389 if (error) { 390 mly_printf(sc, "can't set up interrupt\n"); 391 goto fail; 392 } 393 394 /* assume failure is 'out of memory' */ 395 error = ENOMEM; 396 397 /* 398 * Allocate the parent bus DMA tag appropriate for our PCI interface. 399 * 400 * Note that all of these controllers are 64-bit capable. 401 */ 402 if (bus_dma_tag_create(NULL, /* parent */ 403 1, 0, /* alignment, boundary */ 404 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 405 BUS_SPACE_MAXADDR, /* highaddr */ 406 NULL, NULL, /* filter, filterarg */ 407 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 408 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 409 BUS_DMA_ALLOCNOW, /* flags */ 410 &sc->mly_parent_dmat)) { 411 mly_printf(sc, "can't allocate parent DMA tag\n"); 412 goto fail; 413 } 414 415 /* 416 * Create DMA tag for mapping buffers into controller-addressable space. 417 */ 418 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 419 1, 0, /* alignment, boundary */ 420 BUS_SPACE_MAXADDR, /* lowaddr */ 421 BUS_SPACE_MAXADDR, /* highaddr */ 422 NULL, NULL, /* filter, filterarg */ 423 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 424 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 425 0, /* flags */ 426 &sc->mly_buffer_dmat)) { 427 mly_printf(sc, "can't allocate buffer DMA tag\n"); 428 goto fail; 429 } 430 431 /* 432 * Initialise the DMA tag for command packets. 433 */ 434 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 435 1, 0, /* alignment, boundary */ 436 BUS_SPACE_MAXADDR, /* lowaddr */ 437 BUS_SPACE_MAXADDR, /* highaddr */ 438 NULL, NULL, /* filter, filterarg */ 439 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 440 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 441 BUS_DMA_ALLOCNOW, /* flags */ 442 &sc->mly_packet_dmat)) { 443 mly_printf(sc, "can't allocate command packet DMA tag\n"); 444 goto fail; 445 } 446 447 /* 448 * Detect the hardware interface version 449 */ 450 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 451 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 452 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 453 sc->mly_hwif = mly_identifiers[i].hwif; 454 switch(sc->mly_hwif) { 455 case MLY_HWIF_I960RX: 456 debug(1, "set hardware up for i960RX"); 457 sc->mly_doorbell_true = 0x00; 458 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 459 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 460 sc->mly_idbr = MLY_I960RX_IDBR; 461 sc->mly_odbr = MLY_I960RX_ODBR; 462 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 463 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 464 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 465 break; 466 case MLY_HWIF_STRONGARM: 467 debug(1, "set hardware up for StrongARM"); 468 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 469 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 470 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 471 sc->mly_idbr = MLY_STRONGARM_IDBR; 472 sc->mly_odbr = MLY_STRONGARM_ODBR; 473 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 474 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 475 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 476 break; 477 } 478 break; 479 } 480 } 481 482 /* 483 * Create the scatter/gather mappings. 484 */ 485 if ((error = mly_sg_map(sc))) 486 goto fail; 487 488 /* 489 * Allocate and map the memory mailbox 490 */ 491 if ((error = mly_mmbox_map(sc))) 492 goto fail; 493 494 error = 0; 495 496 fail: 497 return(error); 498 } 499 500 /******************************************************************************** 501 * Shut the controller down and detach all our resources. 502 */ 503 static int 504 mly_detach(device_t dev) 505 { 506 int error; 507 508 if ((error = mly_shutdown(dev)) != 0) 509 return(error); 510 511 mly_free(device_get_softc(dev)); 512 return(0); 513 } 514 515 /******************************************************************************** 516 * Bring the controller to a state where it can be safely left alone. 517 * 518 * Note that it should not be necessary to wait for any outstanding commands, 519 * as they should be completed prior to calling here. 520 * 521 * XXX this applies for I/O, but not status polls; we should beware of 522 * the case where a status command is running while we detach. 523 */ 524 static int 525 mly_shutdown(device_t dev) 526 { 527 struct mly_softc *sc = device_get_softc(dev); 528 529 debug_called(1); 530 531 if (sc->mly_state & MLY_STATE_OPEN) 532 return(EBUSY); 533 534 /* kill the periodic event */ 535 callout_stop(&sc->mly_periodic); 536 537 /* flush controller */ 538 mly_printf(sc, "flushing cache..."); 539 kprintf("%s\n", mly_flush(sc) ? "failed" : "done"); 540 541 MLY_MASK_INTERRUPTS(sc); 542 543 return(0); 544 } 545 546 /******************************************************************************* 547 * Take an interrupt, or be poked by other code to look for interrupt-worthy 548 * status. 549 */ 550 static void 551 mly_intr(void *arg) 552 { 553 struct mly_softc *sc = (struct mly_softc *)arg; 554 555 debug_called(2); 556 557 mly_done(sc); 558 }; 559 560 /******************************************************************************** 561 ******************************************************************************** 562 Bus-dependant Resource Management 563 ******************************************************************************** 564 ********************************************************************************/ 565 566 /******************************************************************************** 567 * Allocate memory for the scatter/gather tables 568 */ 569 static int 570 mly_sg_map(struct mly_softc *sc) 571 { 572 size_t segsize; 573 574 debug_called(1); 575 576 /* 577 * Create a single tag describing a region large enough to hold all of 578 * the s/g lists we will need. 579 */ 580 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 581 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 582 1, 0, /* alignment,boundary */ 583 BUS_SPACE_MAXADDR, /* lowaddr */ 584 BUS_SPACE_MAXADDR, /* highaddr */ 585 NULL, NULL, /* filter, filterarg */ 586 segsize, 1, /* maxsize, nsegments */ 587 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 588 BUS_DMA_ALLOCNOW, /* flags */ 589 &sc->mly_sg_dmat)) { 590 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 591 return(ENOMEM); 592 } 593 594 /* 595 * Allocate enough s/g maps for all commands and permanently map them into 596 * controller-visible space. 597 * 598 * XXX this assumes we can get enough space for all the s/g maps in one 599 * contiguous slab. 600 */ 601 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 602 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 603 mly_printf(sc, "can't allocate s/g table\n"); 604 return(ENOMEM); 605 } 606 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 607 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 608 return (ENOMEM); 609 return(0); 610 } 611 612 /******************************************************************************** 613 * Save the physical address of the base of the s/g table. 614 */ 615 static void 616 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 617 { 618 struct mly_softc *sc = (struct mly_softc *)arg; 619 620 debug_called(1); 621 622 /* save base of s/g table's address in bus space */ 623 sc->mly_sg_busaddr = segs->ds_addr; 624 } 625 626 /******************************************************************************** 627 * Allocate memory for the memory-mailbox interface 628 */ 629 static int 630 mly_mmbox_map(struct mly_softc *sc) 631 { 632 633 /* 634 * Create a DMA tag for a single contiguous region large enough for the 635 * memory mailbox structure. 636 */ 637 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 638 1, 0, /* alignment,boundary */ 639 BUS_SPACE_MAXADDR, /* lowaddr */ 640 BUS_SPACE_MAXADDR, /* highaddr */ 641 NULL, NULL, /* filter, filterarg */ 642 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 643 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 644 BUS_DMA_ALLOCNOW, /* flags */ 645 &sc->mly_mmbox_dmat)) { 646 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 647 return(ENOMEM); 648 } 649 650 /* 651 * Allocate the buffer 652 */ 653 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 654 mly_printf(sc, "can't allocate memory mailbox\n"); 655 return(ENOMEM); 656 } 657 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 658 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 659 BUS_DMA_NOWAIT) != 0) 660 return (ENOMEM); 661 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 662 return(0); 663 664 } 665 666 /******************************************************************************** 667 * Save the physical address of the memory mailbox 668 */ 669 static void 670 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 671 { 672 struct mly_softc *sc = (struct mly_softc *)arg; 673 674 debug_called(1); 675 676 sc->mly_mmbox_busaddr = segs->ds_addr; 677 } 678 679 /******************************************************************************** 680 * Free all of the resources associated with (sc) 681 * 682 * Should not be called if the controller is active. 683 */ 684 static void 685 mly_free(struct mly_softc *sc) 686 { 687 688 debug_called(1); 689 690 /* Remove the management device */ 691 destroy_dev(sc->mly_dev_t); 692 693 /* detach from CAM */ 694 mly_cam_detach(sc); 695 696 /* release command memory */ 697 mly_release_commands(sc); 698 699 /* throw away the controllerinfo structure */ 700 if (sc->mly_controllerinfo != NULL) 701 kfree(sc->mly_controllerinfo, M_DEVBUF); 702 703 /* throw away the controllerparam structure */ 704 if (sc->mly_controllerparam != NULL) 705 kfree(sc->mly_controllerparam, M_DEVBUF); 706 707 /* destroy data-transfer DMA tag */ 708 if (sc->mly_buffer_dmat) 709 bus_dma_tag_destroy(sc->mly_buffer_dmat); 710 711 /* free and destroy DMA memory and tag for s/g lists */ 712 if (sc->mly_sg_table) { 713 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 714 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 715 } 716 if (sc->mly_sg_dmat) 717 bus_dma_tag_destroy(sc->mly_sg_dmat); 718 719 /* free and destroy DMA memory and tag for memory mailbox */ 720 if (sc->mly_mmbox) { 721 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 722 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 723 } 724 if (sc->mly_mmbox_dmat) 725 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 726 727 /* disconnect the interrupt handler */ 728 if (sc->mly_intr) 729 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 730 if (sc->mly_irq != NULL) 731 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 732 733 /* destroy the parent DMA tag */ 734 if (sc->mly_parent_dmat) 735 bus_dma_tag_destroy(sc->mly_parent_dmat); 736 737 /* release the register window mapping */ 738 if (sc->mly_regs_resource != NULL) 739 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 740 } 741 742 /******************************************************************************** 743 ******************************************************************************** 744 Command Wrappers 745 ******************************************************************************** 746 ********************************************************************************/ 747 748 /******************************************************************************** 749 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 750 */ 751 static int 752 mly_get_controllerinfo(struct mly_softc *sc) 753 { 754 struct mly_command_ioctl mci; 755 u_int8_t status; 756 int error; 757 758 debug_called(1); 759 760 if (sc->mly_controllerinfo != NULL) 761 kfree(sc->mly_controllerinfo, M_DEVBUF); 762 763 /* build the getcontrollerinfo ioctl and send it */ 764 bzero(&mci, sizeof(mci)); 765 sc->mly_controllerinfo = NULL; 766 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 767 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 768 &status, NULL, NULL))) 769 return(error); 770 if (status != 0) 771 return(EIO); 772 773 if (sc->mly_controllerparam != NULL) 774 kfree(sc->mly_controllerparam, M_DEVBUF); 775 776 /* build the getcontrollerparameter ioctl and send it */ 777 bzero(&mci, sizeof(mci)); 778 sc->mly_controllerparam = NULL; 779 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 780 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 781 &status, NULL, NULL))) 782 return(error); 783 if (status != 0) 784 return(EIO); 785 786 return(0); 787 } 788 789 /******************************************************************************** 790 * Schedule all possible devices for a rescan. 791 * 792 */ 793 static void 794 mly_scan_devices(struct mly_softc *sc) 795 { 796 int bus, target; 797 798 debug_called(1); 799 800 /* 801 * Clear any previous BTL information. 802 */ 803 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 804 805 /* 806 * Mark all devices as requiring a rescan, and let the next 807 * periodic scan collect them. 808 */ 809 for (bus = 0; bus < sc->mly_cam_channels; bus++) 810 if (MLY_BUS_IS_VALID(sc, bus)) 811 for (target = 0; target < MLY_MAX_TARGETS; target++) 812 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 813 814 } 815 816 /******************************************************************************** 817 * Rescan a device, possibly as a consequence of getting an event which suggests 818 * that it may have changed. 819 * 820 * If we suffer resource starvation, we can abandon the rescan as we'll be 821 * retried. 822 */ 823 static void 824 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 825 { 826 struct mly_command *mc; 827 struct mly_command_ioctl *mci; 828 829 debug_called(1); 830 831 /* check that this bus is valid */ 832 if (!MLY_BUS_IS_VALID(sc, bus)) 833 return; 834 835 /* get a command */ 836 if (mly_alloc_command(sc, &mc)) 837 return; 838 839 /* set up the data buffer */ 840 mc->mc_data = kmalloc(sizeof(union mly_devinfo), M_DEVBUF, M_INTWAIT | M_ZERO); 841 mc->mc_flags |= MLY_CMD_DATAIN; 842 mc->mc_complete = mly_complete_rescan; 843 844 /* 845 * Build the ioctl. 846 */ 847 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 848 mci->opcode = MDACMD_IOCTL; 849 mci->addr.phys.controller = 0; 850 mci->timeout.value = 30; 851 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 852 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 853 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 854 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 855 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 856 debug(1, "logical device %d", mci->addr.log.logdev); 857 } else { 858 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 859 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 860 mci->addr.phys.lun = 0; 861 mci->addr.phys.target = target; 862 mci->addr.phys.channel = bus; 863 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 864 } 865 866 /* 867 * Dispatch the command. If we successfully send the command, clear the rescan 868 * bit. 869 */ 870 if (mly_start(mc) != 0) { 871 mly_release_command(mc); 872 } else { 873 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 874 } 875 } 876 877 /******************************************************************************** 878 * Handle the completion of a rescan operation 879 */ 880 static void 881 mly_complete_rescan(struct mly_command *mc) 882 { 883 struct mly_softc *sc = mc->mc_sc; 884 struct mly_ioctl_getlogdevinfovalid *ldi; 885 struct mly_ioctl_getphysdevinfovalid *pdi; 886 struct mly_command_ioctl *mci; 887 struct mly_btl btl, *btlp; 888 int bus, target, rescan; 889 890 debug_called(1); 891 892 /* 893 * Recover the bus and target from the command. We need these even in 894 * the case where we don't have a useful response. 895 */ 896 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 897 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 898 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 899 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 900 } else { 901 bus = mci->addr.phys.channel; 902 target = mci->addr.phys.target; 903 } 904 /* XXX validate bus/target? */ 905 906 /* the default result is 'no device' */ 907 bzero(&btl, sizeof(btl)); 908 909 /* if the rescan completed OK, we have possibly-new BTL data */ 910 if (mc->mc_status == 0) { 911 if (mc->mc_length == sizeof(*ldi)) { 912 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 913 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 914 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 915 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 916 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 917 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 918 /* XXX what can we do about this? */ 919 } 920 btl.mb_flags = MLY_BTL_LOGICAL; 921 btl.mb_type = ldi->raid_level; 922 btl.mb_state = ldi->state; 923 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 924 mly_describe_code(mly_table_device_type, ldi->raid_level), 925 mly_describe_code(mly_table_device_state, ldi->state)); 926 } else if (mc->mc_length == sizeof(*pdi)) { 927 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 928 if ((pdi->channel != bus) || (pdi->target != target)) { 929 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 930 bus, target, pdi->channel, pdi->target); 931 /* XXX what can we do about this? */ 932 } 933 btl.mb_flags = MLY_BTL_PHYSICAL; 934 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 935 btl.mb_state = pdi->state; 936 btl.mb_speed = pdi->speed; 937 btl.mb_width = pdi->width; 938 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 939 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 940 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 941 mly_describe_code(mly_table_device_state, pdi->state)); 942 } else { 943 mly_printf(sc, "BTL rescan result invalid\n"); 944 } 945 } 946 947 kfree(mc->mc_data, M_DEVBUF); 948 mly_release_command(mc); 949 950 /* 951 * Decide whether we need to rescan the device. 952 */ 953 rescan = 0; 954 955 /* device type changes (usually between 'nothing' and 'something') */ 956 btlp = &sc->mly_btl[bus][target]; 957 if (btl.mb_flags != btlp->mb_flags) { 958 debug(1, "flags changed, rescanning"); 959 rescan = 1; 960 } 961 962 /* XXX other reasons? */ 963 964 /* 965 * Update BTL information. 966 */ 967 *btlp = btl; 968 969 /* 970 * Perform CAM rescan if required. 971 */ 972 if (rescan) 973 mly_cam_rescan_btl(sc, bus, target); 974 } 975 976 /******************************************************************************** 977 * Get the current health status and set the 'next event' counter to suit. 978 */ 979 static int 980 mly_get_eventstatus(struct mly_softc *sc) 981 { 982 struct mly_command_ioctl mci; 983 struct mly_health_status *mh; 984 u_int8_t status; 985 int error; 986 987 /* build the gethealthstatus ioctl and send it */ 988 bzero(&mci, sizeof(mci)); 989 mh = NULL; 990 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 991 992 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 993 return(error); 994 if (status != 0) 995 return(EIO); 996 997 /* get the event counter */ 998 sc->mly_event_change = mh->change_counter; 999 sc->mly_event_waiting = mh->next_event; 1000 sc->mly_event_counter = mh->next_event; 1001 1002 /* save the health status into the memory mailbox */ 1003 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 1004 1005 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 1006 1007 kfree(mh, M_DEVBUF); 1008 return(0); 1009 } 1010 1011 /******************************************************************************** 1012 * Enable the memory mailbox mode. 1013 */ 1014 static int 1015 mly_enable_mmbox(struct mly_softc *sc) 1016 { 1017 struct mly_command_ioctl mci; 1018 u_int8_t *sp, status; 1019 int error; 1020 1021 debug_called(1); 1022 1023 /* build the ioctl and send it */ 1024 bzero(&mci, sizeof(mci)); 1025 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1026 /* set buffer addresses */ 1027 mci.param.setmemorymailbox.command_mailbox_physaddr = 1028 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1029 mci.param.setmemorymailbox.status_mailbox_physaddr = 1030 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1031 mci.param.setmemorymailbox.health_buffer_physaddr = 1032 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1033 1034 /* set buffer sizes - abuse of data_size field is revolting */ 1035 sp = (u_int8_t *)&mci.data_size; 1036 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1037 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1038 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1039 1040 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1041 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1042 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1043 mci.param.setmemorymailbox.health_buffer_physaddr, 1044 mci.param.setmemorymailbox.health_buffer_size); 1045 1046 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1047 return(error); 1048 if (status != 0) 1049 return(EIO); 1050 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1051 debug(1, "memory mailbox active"); 1052 return(0); 1053 } 1054 1055 /******************************************************************************** 1056 * Flush all pending I/O from the controller. 1057 */ 1058 static int 1059 mly_flush(struct mly_softc *sc) 1060 { 1061 struct mly_command_ioctl mci; 1062 u_int8_t status; 1063 int error; 1064 1065 debug_called(1); 1066 1067 /* build the ioctl */ 1068 bzero(&mci, sizeof(mci)); 1069 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1070 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1071 1072 /* pass it off to the controller */ 1073 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1074 return(error); 1075 1076 return((status == 0) ? 0 : EIO); 1077 } 1078 1079 /******************************************************************************** 1080 * Perform an ioctl command. 1081 * 1082 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1083 * the command requires data transfer from the controller, and we will allocate 1084 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1085 * to the controller. 1086 * 1087 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1088 * 1089 * XXX we don't even try to handle the case where datasize > 4k. We should. 1090 */ 1091 static int 1092 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1093 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1094 { 1095 struct mly_command *mc; 1096 struct mly_command_ioctl *mci; 1097 int error; 1098 1099 debug_called(1); 1100 1101 mc = NULL; 1102 if (mly_alloc_command(sc, &mc)) { 1103 error = ENOMEM; 1104 goto out; 1105 } 1106 1107 /* copy the ioctl structure, but save some important fields and then fixup */ 1108 mci = &mc->mc_packet->ioctl; 1109 ioctl->sense_buffer_address = mci->sense_buffer_address; 1110 ioctl->maximum_sense_size = mci->maximum_sense_size; 1111 *mci = *ioctl; 1112 mci->opcode = MDACMD_IOCTL; 1113 mci->timeout.value = 30; 1114 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1115 1116 /* handle the data buffer */ 1117 if (data != NULL) { 1118 if (*data == NULL) { 1119 /* allocate data buffer */ 1120 mc->mc_data = kmalloc(datasize, M_DEVBUF, M_INTWAIT); 1121 mc->mc_flags |= MLY_CMD_DATAIN; 1122 } else { 1123 mc->mc_data = *data; 1124 mc->mc_flags |= MLY_CMD_DATAOUT; 1125 } 1126 mc->mc_length = datasize; 1127 mc->mc_packet->generic.data_size = datasize; 1128 } 1129 1130 /* run the command */ 1131 if ((error = mly_immediate_command(mc))) 1132 goto out; 1133 1134 /* clean up and return any data */ 1135 *status = mc->mc_status; 1136 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1137 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1138 *sense_length = mc->mc_sense; 1139 goto out; 1140 } 1141 1142 /* should we return a data pointer? */ 1143 if ((data != NULL) && (*data == NULL)) 1144 *data = mc->mc_data; 1145 1146 /* command completed OK */ 1147 error = 0; 1148 1149 out: 1150 if (mc != NULL) { 1151 /* do we need to free a data buffer we allocated? */ 1152 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1153 kfree(mc->mc_data, M_DEVBUF); 1154 mly_release_command(mc); 1155 } 1156 return(error); 1157 } 1158 1159 /******************************************************************************** 1160 * Check for event(s) outstanding in the controller. 1161 */ 1162 static void 1163 mly_check_event(struct mly_softc *sc) 1164 { 1165 1166 /* 1167 * The controller may have updated the health status information, 1168 * so check for it here. Note that the counters are all in host memory, 1169 * so this check is very cheap. Also note that we depend on checking on 1170 * completion 1171 */ 1172 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1173 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1174 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1175 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1176 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1177 1178 /* wake up anyone that might be interested in this */ 1179 wakeup(&sc->mly_event_change); 1180 } 1181 if (sc->mly_event_counter != sc->mly_event_waiting) 1182 mly_fetch_event(sc); 1183 } 1184 1185 /******************************************************************************** 1186 * Fetch one event from the controller. 1187 * 1188 * If we fail due to resource starvation, we'll be retried the next time a 1189 * command completes. 1190 */ 1191 static void 1192 mly_fetch_event(struct mly_softc *sc) 1193 { 1194 struct mly_command *mc; 1195 struct mly_command_ioctl *mci; 1196 u_int32_t event; 1197 1198 debug_called(1); 1199 1200 /* get a command */ 1201 if (mly_alloc_command(sc, &mc)) 1202 return; 1203 1204 /* set up the data buffer */ 1205 mc->mc_data = kmalloc(sizeof(struct mly_event), M_DEVBUF, M_INTWAIT|M_ZERO); 1206 mc->mc_length = sizeof(struct mly_event); 1207 mc->mc_flags |= MLY_CMD_DATAIN; 1208 mc->mc_complete = mly_complete_event; 1209 1210 /* 1211 * Get an event number to fetch. It's possible that we've raced with another 1212 * context for the last event, in which case there will be no more events. 1213 */ 1214 crit_enter(); 1215 if (sc->mly_event_counter == sc->mly_event_waiting) { 1216 mly_release_command(mc); 1217 crit_exit(); 1218 return; 1219 } 1220 event = sc->mly_event_counter++; 1221 crit_exit(); 1222 1223 /* 1224 * Build the ioctl. 1225 * 1226 * At this point we are committed to sending this request, as it 1227 * will be the only one constructed for this particular event number. 1228 */ 1229 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1230 mci->opcode = MDACMD_IOCTL; 1231 mci->data_size = sizeof(struct mly_event); 1232 mci->addr.phys.lun = (event >> 16) & 0xff; 1233 mci->addr.phys.target = (event >> 24) & 0xff; 1234 mci->addr.phys.channel = 0; 1235 mci->addr.phys.controller = 0; 1236 mci->timeout.value = 30; 1237 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1238 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1239 mci->param.getevent.sequence_number_low = event & 0xffff; 1240 1241 debug(1, "fetch event %u", event); 1242 1243 /* 1244 * Submit the command. 1245 * 1246 * Note that failure of mly_start() will result in this event never being 1247 * fetched. 1248 */ 1249 if (mly_start(mc) != 0) { 1250 mly_printf(sc, "couldn't fetch event %u\n", event); 1251 mly_release_command(mc); 1252 } 1253 } 1254 1255 /******************************************************************************** 1256 * Handle the completion of an event poll. 1257 */ 1258 static void 1259 mly_complete_event(struct mly_command *mc) 1260 { 1261 struct mly_softc *sc = mc->mc_sc; 1262 struct mly_event *me = (struct mly_event *)mc->mc_data; 1263 1264 debug_called(1); 1265 1266 /* 1267 * If the event was successfully fetched, process it. 1268 */ 1269 if (mc->mc_status == SCSI_STATUS_OK) { 1270 mly_process_event(sc, me); 1271 kfree(me, M_DEVBUF); 1272 } 1273 mly_release_command(mc); 1274 1275 /* 1276 * Check for another event. 1277 */ 1278 mly_check_event(sc); 1279 } 1280 1281 /******************************************************************************** 1282 * Process a controller event. 1283 */ 1284 static void 1285 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1286 { 1287 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1288 char *fp, *tp; 1289 int bus, target, event, class, action; 1290 1291 /* 1292 * Errors can be reported using vendor-unique sense data. In this case, the 1293 * event code will be 0x1c (Request sense data present), the sense key will 1294 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1295 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1296 * and low seven bits of the ASC (low seven bits of the high byte). 1297 */ 1298 if ((me->code == 0x1c) && 1299 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1300 (ssd->add_sense_code & 0x80)) { 1301 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1302 } else { 1303 event = me->code; 1304 } 1305 1306 /* look up event, get codes */ 1307 fp = mly_describe_code(mly_table_event, event); 1308 1309 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1310 1311 /* quiet event? */ 1312 class = fp[0]; 1313 if (isupper(class) && bootverbose) 1314 class = tolower(class); 1315 1316 /* get action code, text string */ 1317 action = fp[1]; 1318 tp = &fp[2]; 1319 1320 /* 1321 * Print some information about the event. 1322 * 1323 * This code uses a table derived from the corresponding portion of the Linux 1324 * driver, and thus the parser is very similar. 1325 */ 1326 switch(class) { 1327 case 'p': /* error on physical device */ 1328 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1329 if (action == 'r') 1330 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1331 break; 1332 case 'l': /* error on logical unit */ 1333 case 'm': /* message about logical unit */ 1334 bus = MLY_LOGDEV_BUS(sc, me->lun); 1335 target = MLY_LOGDEV_TARGET(sc, me->lun); 1336 mly_name_device(sc, bus, target); 1337 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1338 if (action == 'r') 1339 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1340 break; 1341 break; 1342 case 's': /* report of sense data */ 1343 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1344 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1345 (ssd->add_sense_code == 0x04) && 1346 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1347 break; /* ignore NO_SENSE or NOT_READY in one case */ 1348 1349 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1350 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1351 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1352 mly_printf(sc, " info %4D csi %4D\n", ssd->info, "", ssd->cmd_spec_info, ""); 1353 if (action == 'r') 1354 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1355 break; 1356 case 'e': 1357 mly_printf(sc, tp, me->target, me->lun); 1358 kprintf("\n"); 1359 break; 1360 case 'c': 1361 mly_printf(sc, "controller %s\n", tp); 1362 break; 1363 case '?': 1364 mly_printf(sc, "%s - %d\n", tp, me->code); 1365 break; 1366 default: /* probably a 'noisy' event being ignored */ 1367 break; 1368 } 1369 } 1370 1371 /******************************************************************************** 1372 * Perform periodic activities. 1373 */ 1374 static void 1375 mly_periodic(void *data) 1376 { 1377 struct mly_softc *sc = (struct mly_softc *)data; 1378 int bus, target; 1379 1380 debug_called(2); 1381 1382 /* 1383 * Scan devices. 1384 */ 1385 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1386 if (MLY_BUS_IS_VALID(sc, bus)) { 1387 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1388 1389 /* ignore the controller in this scan */ 1390 if (target == sc->mly_controllerparam->initiator_id) 1391 continue; 1392 1393 /* perform device rescan? */ 1394 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1395 mly_rescan_btl(sc, bus, target); 1396 } 1397 } 1398 } 1399 1400 /* check for controller events */ 1401 mly_check_event(sc); 1402 1403 /* reschedule ourselves */ 1404 callout_reset(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz, mly_periodic, sc); 1405 } 1406 1407 /******************************************************************************** 1408 ******************************************************************************** 1409 Command Processing 1410 ******************************************************************************** 1411 ********************************************************************************/ 1412 1413 /******************************************************************************** 1414 * Run a command and wait for it to complete. 1415 * 1416 */ 1417 static int 1418 mly_immediate_command(struct mly_command *mc) 1419 { 1420 struct mly_softc *sc = mc->mc_sc; 1421 int error; 1422 1423 debug_called(1); 1424 1425 /* spinning at splcam is ugly, but we're only used during controller init */ 1426 crit_enter(); 1427 if ((error = mly_start(mc))) { 1428 crit_exit(); 1429 return(error); 1430 } 1431 1432 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1433 /* sleep on the command */ 1434 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1435 tsleep(mc, 0, "mlywait", 0); 1436 } 1437 } else { 1438 /* spin and collect status while we do */ 1439 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1440 mly_done(mc->mc_sc); 1441 } 1442 } 1443 crit_exit(); 1444 return(0); 1445 } 1446 1447 /******************************************************************************** 1448 * Deliver a command to the controller. 1449 * 1450 * XXX it would be good to just queue commands that we can't submit immediately 1451 * and send them later, but we probably want a wrapper for that so that 1452 * we don't hang on a failed submission for an immediate command. 1453 */ 1454 static int 1455 mly_start(struct mly_command *mc) 1456 { 1457 struct mly_softc *sc = mc->mc_sc; 1458 union mly_command_packet *pkt; 1459 1460 debug_called(2); 1461 1462 /* 1463 * Set the command up for delivery to the controller. 1464 */ 1465 mly_map_command(mc); 1466 mc->mc_packet->generic.command_id = mc->mc_slot; 1467 1468 #ifdef MLY_DEBUG 1469 mc->mc_timestamp = time_second; 1470 #endif 1471 1472 crit_enter(); 1473 1474 /* 1475 * Do we have to use the hardware mailbox? 1476 */ 1477 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1478 /* 1479 * Check to see if the controller is ready for us. 1480 */ 1481 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1482 crit_exit(); 1483 return(EBUSY); 1484 } 1485 mc->mc_flags |= MLY_CMD_BUSY; 1486 1487 /* 1488 * It's ready, send the command. 1489 */ 1490 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1491 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1492 1493 } else { /* use memory-mailbox mode */ 1494 1495 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1496 1497 /* check to see if the next index is free yet */ 1498 if (pkt->mmbox.flag != 0) { 1499 crit_exit(); 1500 return(EBUSY); 1501 } 1502 mc->mc_flags |= MLY_CMD_BUSY; 1503 1504 /* copy in new command */ 1505 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1506 /* barrier to ensure completion of previous write before we write the flag */ 1507 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1508 BUS_SPACE_BARRIER_WRITE); 1509 /* copy flag last */ 1510 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1511 /* barrier to ensure completion of previous write before we notify the controller */ 1512 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1513 BUS_SPACE_BARRIER_WRITE); 1514 1515 /* signal controller, update index */ 1516 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1517 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1518 } 1519 1520 mly_enqueue_busy(mc); 1521 crit_exit(); 1522 return(0); 1523 } 1524 1525 /******************************************************************************** 1526 * Pick up command status from the controller, schedule a completion event 1527 */ 1528 static void 1529 mly_done(struct mly_softc *sc) 1530 { 1531 struct mly_command *mc; 1532 union mly_status_packet *sp; 1533 u_int16_t slot; 1534 int worked; 1535 1536 crit_enter(); 1537 worked = 0; 1538 1539 /* pick up hardware-mailbox commands */ 1540 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1541 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1542 if (slot < MLY_SLOT_MAX) { 1543 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1544 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1545 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1546 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1547 mly_remove_busy(mc); 1548 mc->mc_flags &= ~MLY_CMD_BUSY; 1549 mly_enqueue_complete(mc); 1550 worked = 1; 1551 } else { 1552 /* slot 0xffff may mean "extremely bogus command" */ 1553 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1554 } 1555 /* unconditionally acknowledge status */ 1556 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1557 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1558 } 1559 1560 /* pick up memory-mailbox commands */ 1561 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1562 for (;;) { 1563 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1564 1565 /* check for more status */ 1566 if (sp->mmbox.flag == 0) 1567 break; 1568 1569 /* get slot number */ 1570 slot = sp->status.command_id; 1571 if (slot < MLY_SLOT_MAX) { 1572 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1573 mc->mc_status = sp->status.status; 1574 mc->mc_sense = sp->status.sense_length; 1575 mc->mc_resid = sp->status.residue; 1576 mly_remove_busy(mc); 1577 mc->mc_flags &= ~MLY_CMD_BUSY; 1578 mly_enqueue_complete(mc); 1579 worked = 1; 1580 } else { 1581 /* slot 0xffff may mean "extremely bogus command" */ 1582 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1583 slot, sc->mly_mmbox_status_index); 1584 } 1585 1586 /* clear and move to next index */ 1587 sp->mmbox.flag = 0; 1588 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1589 } 1590 /* acknowledge that we have collected status value(s) */ 1591 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1592 } 1593 1594 crit_exit(); 1595 if (worked) { 1596 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1597 taskqueue_enqueue(taskqueue_swi, &sc->mly_task_complete); 1598 else 1599 mly_complete(sc, 0); 1600 } 1601 } 1602 1603 /******************************************************************************** 1604 * Process completed commands 1605 */ 1606 static void 1607 mly_complete(void *context, int pending) 1608 { 1609 struct mly_softc *sc = (struct mly_softc *)context; 1610 struct mly_command *mc; 1611 void (* mc_complete)(struct mly_command *mc); 1612 1613 1614 debug_called(2); 1615 1616 /* 1617 * Spin pulling commands off the completed queue and processing them. 1618 */ 1619 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1620 1621 /* 1622 * Free controller resources, mark command complete. 1623 * 1624 * Note that as soon as we mark the command complete, it may be freed 1625 * out from under us, so we need to save the mc_complete field in 1626 * order to later avoid dereferencing mc. (We would not expect to 1627 * have a polling/sleeping consumer with mc_complete != NULL). 1628 */ 1629 mly_unmap_command(mc); 1630 mc_complete = mc->mc_complete; 1631 mc->mc_flags |= MLY_CMD_COMPLETE; 1632 1633 /* 1634 * Call completion handler or wake up sleeping consumer. 1635 */ 1636 if (mc_complete != NULL) { 1637 mc_complete(mc); 1638 } else { 1639 wakeup(mc); 1640 } 1641 } 1642 1643 /* 1644 * XXX if we are deferring commands due to controller-busy status, we should 1645 * retry submitting them here. 1646 */ 1647 } 1648 1649 /******************************************************************************** 1650 ******************************************************************************** 1651 Command Buffer Management 1652 ******************************************************************************** 1653 ********************************************************************************/ 1654 1655 /******************************************************************************** 1656 * Allocate a command. 1657 */ 1658 static int 1659 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1660 { 1661 struct mly_command *mc; 1662 1663 debug_called(3); 1664 1665 if ((mc = mly_dequeue_free(sc)) == NULL) 1666 return(ENOMEM); 1667 1668 *mcp = mc; 1669 return(0); 1670 } 1671 1672 /******************************************************************************** 1673 * Release a command back to the freelist. 1674 */ 1675 static void 1676 mly_release_command(struct mly_command *mc) 1677 { 1678 debug_called(3); 1679 1680 /* 1681 * Fill in parts of the command that may cause confusion if 1682 * a consumer doesn't when we are later allocated. 1683 */ 1684 mc->mc_data = NULL; 1685 mc->mc_flags = 0; 1686 mc->mc_complete = NULL; 1687 mc->mc_private = NULL; 1688 1689 /* 1690 * By default, we set up to overwrite the command packet with 1691 * sense information. 1692 */ 1693 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1694 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1695 1696 mly_enqueue_free(mc); 1697 } 1698 1699 /******************************************************************************** 1700 * Map helper for command allocation. 1701 */ 1702 static void 1703 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1704 { 1705 struct mly_softc *sc = (struct mly_softc *)arg; 1706 1707 debug_called(1); 1708 1709 sc->mly_packetphys = segs[0].ds_addr; 1710 } 1711 1712 /******************************************************************************** 1713 * Allocate and initialise command and packet structures. 1714 * 1715 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1716 * allocation to that number. If we don't yet know how many commands the 1717 * controller supports, allocate a very small set (suitable for initialisation 1718 * purposes only). 1719 */ 1720 static int 1721 mly_alloc_commands(struct mly_softc *sc) 1722 { 1723 struct mly_command *mc; 1724 int i, ncmd; 1725 1726 if (sc->mly_controllerinfo == NULL) { 1727 ncmd = 4; 1728 } else { 1729 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1730 } 1731 1732 /* 1733 * Allocate enough space for all the command packets in one chunk and 1734 * map them permanently into controller-visible space. 1735 */ 1736 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1737 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1738 return(ENOMEM); 1739 } 1740 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1741 ncmd * sizeof(union mly_command_packet), 1742 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1743 return (ENOMEM); 1744 1745 for (i = 0; i < ncmd; i++) { 1746 mc = &sc->mly_command[i]; 1747 bzero(mc, sizeof(*mc)); 1748 mc->mc_sc = sc; 1749 mc->mc_slot = MLY_SLOT_START + i; 1750 mc->mc_packet = sc->mly_packet + i; 1751 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1752 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1753 mly_release_command(mc); 1754 } 1755 return(0); 1756 } 1757 1758 /******************************************************************************** 1759 * Free all the storage held by commands. 1760 * 1761 * Must be called with all commands on the free list. 1762 */ 1763 static void 1764 mly_release_commands(struct mly_softc *sc) 1765 { 1766 struct mly_command *mc; 1767 1768 /* throw away command buffer DMA maps */ 1769 while (mly_alloc_command(sc, &mc) == 0) 1770 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1771 1772 /* release the packet storage */ 1773 if (sc->mly_packet != NULL) { 1774 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1775 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1776 sc->mly_packet = NULL; 1777 } 1778 } 1779 1780 1781 /******************************************************************************** 1782 * Command-mapping helper function - populate this command's s/g table 1783 * with the s/g entries for its data. 1784 */ 1785 static void 1786 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1787 { 1788 struct mly_command *mc = (struct mly_command *)arg; 1789 struct mly_softc *sc = mc->mc_sc; 1790 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1791 struct mly_sg_entry *sg; 1792 int i, tabofs; 1793 1794 debug_called(2); 1795 1796 /* can we use the transfer structure directly? */ 1797 if (nseg <= 2) { 1798 sg = &gen->transfer.direct.sg[0]; 1799 gen->command_control.extended_sg_table = 0; 1800 } else { 1801 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1802 sg = sc->mly_sg_table + tabofs; 1803 gen->transfer.indirect.entries[0] = nseg; 1804 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1805 gen->command_control.extended_sg_table = 1; 1806 } 1807 1808 /* copy the s/g table */ 1809 for (i = 0; i < nseg; i++) { 1810 sg[i].physaddr = segs[i].ds_addr; 1811 sg[i].length = segs[i].ds_len; 1812 } 1813 1814 } 1815 1816 #if 0 1817 /******************************************************************************** 1818 * Command-mapping helper function - save the cdb's physical address. 1819 * 1820 * We don't support 'large' SCSI commands at this time, so this is unused. 1821 */ 1822 static void 1823 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1824 { 1825 struct mly_command *mc = (struct mly_command *)arg; 1826 1827 debug_called(2); 1828 1829 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1830 if ((segs[0].ds_addr % PAGE_SIZE) > 1831 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1832 panic("cdb crosses page boundary"); 1833 1834 /* fix up fields in the command packet */ 1835 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1836 } 1837 #endif 1838 1839 /******************************************************************************** 1840 * Map a command into controller-visible space 1841 */ 1842 static void 1843 mly_map_command(struct mly_command *mc) 1844 { 1845 struct mly_softc *sc = mc->mc_sc; 1846 1847 debug_called(2); 1848 1849 /* don't map more than once */ 1850 if (mc->mc_flags & MLY_CMD_MAPPED) 1851 return; 1852 1853 /* does the command have a data buffer? */ 1854 if (mc->mc_data != NULL) { 1855 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1856 mly_map_command_sg, mc, 0); 1857 1858 if (mc->mc_flags & MLY_CMD_DATAIN) 1859 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1860 if (mc->mc_flags & MLY_CMD_DATAOUT) 1861 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1862 } 1863 mc->mc_flags |= MLY_CMD_MAPPED; 1864 } 1865 1866 /******************************************************************************** 1867 * Unmap a command from controller-visible space 1868 */ 1869 static void 1870 mly_unmap_command(struct mly_command *mc) 1871 { 1872 struct mly_softc *sc = mc->mc_sc; 1873 1874 debug_called(2); 1875 1876 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1877 return; 1878 1879 /* does the command have a data buffer? */ 1880 if (mc->mc_data != NULL) { 1881 if (mc->mc_flags & MLY_CMD_DATAIN) 1882 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1883 if (mc->mc_flags & MLY_CMD_DATAOUT) 1884 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1885 1886 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1887 } 1888 mc->mc_flags &= ~MLY_CMD_MAPPED; 1889 } 1890 1891 1892 /******************************************************************************** 1893 ******************************************************************************** 1894 CAM interface 1895 ******************************************************************************** 1896 ********************************************************************************/ 1897 1898 /******************************************************************************** 1899 * Attach the physical and virtual SCSI busses to CAM. 1900 * 1901 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1902 * than the highest physical bus. Physical busses are only registered if 1903 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1904 * 1905 * When we refer to a "bus", we are referring to the bus number registered with 1906 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1907 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1908 * interchangeably. 1909 */ 1910 static int 1911 mly_cam_attach(struct mly_softc *sc) 1912 { 1913 struct cam_devq *devq; 1914 int chn, i; 1915 1916 debug_called(1); 1917 1918 /* 1919 * Allocate a devq for all our channels combined. 1920 */ 1921 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1922 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1923 return(ENOMEM); 1924 } 1925 1926 /* 1927 * If physical channel registration has been requested, register these first. 1928 * Note that we enable tagged command queueing for physical channels. 1929 */ 1930 if (ktestenv("hw.mly.register_physical_channels")) { 1931 chn = 0; 1932 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1933 1934 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1935 device_get_unit(sc->mly_dev), 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 sc->mly_controllerinfo->maximum_parallel_commands, 1956 0, devq)) == NULL) { 1957 return(ENOMEM); 1958 } 1959 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1960 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1961 return(ENXIO); 1962 } 1963 debug(1, "registered virtual channel %d", chn); 1964 } 1965 1966 /* 1967 * This is the total number of channels that (might have been) registered with 1968 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1969 */ 1970 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1971 sc->mly_controllerinfo->virtual_channels_present; 1972 1973 return(0); 1974 } 1975 1976 /******************************************************************************** 1977 * Detach from CAM 1978 */ 1979 static void 1980 mly_cam_detach(struct mly_softc *sc) 1981 { 1982 int i; 1983 1984 debug_called(1); 1985 1986 for (i = 0; i < sc->mly_cam_channels; i++) { 1987 if (sc->mly_cam_sim[i] != NULL) { 1988 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 1989 cam_sim_free(sc->mly_cam_sim[i]); 1990 } 1991 } 1992 if (sc->mly_cam_devq != NULL) 1993 cam_simq_release(sc->mly_cam_devq); 1994 } 1995 1996 /************************************************************************ 1997 * Rescan a device. 1998 */ 1999 static void 2000 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 2001 { 2002 union ccb *ccb; 2003 2004 debug_called(1); 2005 2006 ccb = kmalloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO); 2007 2008 if (xpt_create_path(&sc->mly_cam_path, xpt_periph, 2009 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2010 mly_printf(sc, "rescan failed (can't create path)\n"); 2011 kfree(ccb, M_TEMP); 2012 return; 2013 } 2014 xpt_setup_ccb(&ccb->ccb_h, sc->mly_cam_path, 5/*priority (low)*/); 2015 ccb->ccb_h.func_code = XPT_SCAN_LUN; 2016 ccb->ccb_h.cbfcnp = mly_cam_rescan_callback; 2017 ccb->crcn.flags = CAM_FLAG_NONE; 2018 debug(1, "rescan target %d:%d", bus, target); 2019 xpt_action(ccb); 2020 } 2021 2022 static void 2023 mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2024 { 2025 kfree(ccb, M_TEMP); 2026 } 2027 2028 /******************************************************************************** 2029 * Handle an action requested by CAM 2030 */ 2031 static void 2032 mly_cam_action(struct cam_sim *sim, union ccb *ccb) 2033 { 2034 struct mly_softc *sc = cam_sim_softc(sim); 2035 2036 debug_called(2); 2037 2038 switch (ccb->ccb_h.func_code) { 2039 2040 /* perform SCSI I/O */ 2041 case XPT_SCSI_IO: 2042 if (!mly_cam_action_io(sim, (struct ccb_scsiio *)&ccb->csio)) 2043 return; 2044 break; 2045 2046 /* perform geometry calculations */ 2047 case XPT_CALC_GEOMETRY: 2048 { 2049 struct ccb_calc_geometry *ccg = &ccb->ccg; 2050 u_int32_t secs_per_cylinder; 2051 2052 debug(2, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2053 2054 if (sc->mly_controllerparam->bios_geometry == MLY_BIOSGEOM_8G) { 2055 ccg->heads = 255; 2056 ccg->secs_per_track = 63; 2057 } else { /* MLY_BIOSGEOM_2G */ 2058 ccg->heads = 128; 2059 ccg->secs_per_track = 32; 2060 } 2061 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2062 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2063 ccb->ccb_h.status = CAM_REQ_CMP; 2064 break; 2065 } 2066 2067 /* handle path attribute inquiry */ 2068 case XPT_PATH_INQ: 2069 { 2070 struct ccb_pathinq *cpi = &ccb->cpi; 2071 2072 debug(2, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2073 2074 cpi->version_num = 1; 2075 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX extra flags for physical channels? */ 2076 cpi->target_sprt = 0; 2077 cpi->hba_misc = 0; 2078 cpi->max_target = MLY_MAX_TARGETS - 1; 2079 cpi->max_lun = MLY_MAX_LUNS - 1; 2080 cpi->initiator_id = sc->mly_controllerparam->initiator_id; 2081 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2082 strncpy(cpi->hba_vid, "FreeBSD", HBA_IDLEN); 2083 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2084 cpi->unit_number = cam_sim_unit(sim); 2085 cpi->bus_id = cam_sim_bus(sim); 2086 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2087 cpi->transport = XPORT_SPI; 2088 cpi->transport_version = 2; 2089 cpi->protocol = PROTO_SCSI; 2090 cpi->protocol_version = SCSI_REV_2; 2091 ccb->ccb_h.status = CAM_REQ_CMP; 2092 break; 2093 } 2094 2095 case XPT_GET_TRAN_SETTINGS: 2096 { 2097 struct ccb_trans_settings *cts = &ccb->cts; 2098 int bus, target; 2099 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi; 2100 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi; 2101 2102 cts->protocol = PROTO_SCSI; 2103 cts->protocol_version = SCSI_REV_2; 2104 cts->transport = XPORT_SPI; 2105 cts->transport_version = 2; 2106 2107 scsi->flags = 0; 2108 scsi->valid = 0; 2109 spi->flags = 0; 2110 spi->valid = 0; 2111 2112 bus = cam_sim_bus(sim); 2113 target = cts->ccb_h.target_id; 2114 debug(2, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2115 /* logical device? */ 2116 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2117 /* nothing special for these */ 2118 /* physical device? */ 2119 } else if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PHYSICAL) { 2120 /* allow CAM to try tagged transactions */ 2121 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB; 2122 scsi->valid |= CTS_SCSI_VALID_TQ; 2123 2124 /* convert speed (MHz) to usec */ 2125 if (sc->mly_btl[bus][target].mb_speed == 0) { 2126 spi->sync_period = 1000000 / 5; 2127 } else { 2128 spi->sync_period = 1000000 / sc->mly_btl[bus][target].mb_speed; 2129 } 2130 2131 /* convert bus width to CAM internal encoding */ 2132 switch (sc->mly_btl[bus][target].mb_width) { 2133 case 32: 2134 spi->bus_width = MSG_EXT_WDTR_BUS_32_BIT; 2135 break; 2136 case 16: 2137 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2138 break; 2139 case 8: 2140 default: 2141 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2142 break; 2143 } 2144 spi->valid |= CTS_SPI_VALID_SYNC_RATE | CTS_SPI_VALID_BUS_WIDTH; 2145 2146 /* not a device, bail out */ 2147 } else { 2148 cts->ccb_h.status = CAM_REQ_CMP_ERR; 2149 break; 2150 } 2151 2152 /* disconnect always OK */ 2153 spi->flags |= CTS_SPI_FLAGS_DISC_ENB; 2154 spi->valid |= CTS_SPI_VALID_DISC; 2155 2156 cts->ccb_h.status = CAM_REQ_CMP; 2157 break; 2158 } 2159 2160 default: /* we can't do this */ 2161 debug(2, "unsupported func_code = 0x%x", ccb->ccb_h.func_code); 2162 ccb->ccb_h.status = CAM_REQ_INVALID; 2163 break; 2164 } 2165 2166 xpt_done(ccb); 2167 } 2168 2169 /******************************************************************************** 2170 * Handle an I/O operation requested by CAM 2171 */ 2172 static int 2173 mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2174 { 2175 struct mly_softc *sc = cam_sim_softc(sim); 2176 struct mly_command *mc; 2177 struct mly_command_scsi_small *ss; 2178 int bus, target; 2179 int error; 2180 2181 bus = cam_sim_bus(sim); 2182 target = csio->ccb_h.target_id; 2183 2184 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2185 2186 /* validate bus number */ 2187 if (!MLY_BUS_IS_VALID(sc, bus)) { 2188 debug(0, " invalid bus %d", bus); 2189 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2190 } 2191 2192 /* check for I/O attempt to a protected device */ 2193 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_PROTECTED) { 2194 debug(2, " device protected"); 2195 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2196 } 2197 2198 /* check for I/O attempt to nonexistent device */ 2199 if (!(sc->mly_btl[bus][target].mb_flags & (MLY_BTL_LOGICAL | MLY_BTL_PHYSICAL))) { 2200 debug(2, " device %d:%d does not exist", bus, target); 2201 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2202 } 2203 2204 /* XXX increase if/when we support large SCSI commands */ 2205 if (csio->cdb_len > MLY_CMD_SCSI_SMALL_CDB) { 2206 debug(0, " command too large (%d > %d)", csio->cdb_len, MLY_CMD_SCSI_SMALL_CDB); 2207 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2208 } 2209 2210 /* check that the CDB pointer is not to a physical address */ 2211 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2212 debug(0, " CDB pointer is to physical address"); 2213 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2214 } 2215 2216 /* if there is data transfer, it must be to/from a virtual address */ 2217 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2218 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2219 debug(0, " data pointer is to physical address"); 2220 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2221 } 2222 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2223 debug(0, " data has premature s/g setup"); 2224 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2225 } 2226 } 2227 2228 /* abandon aborted ccbs or those that have failed validation */ 2229 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2230 debug(2, "abandoning CCB due to abort/validation failure"); 2231 return(EINVAL); 2232 } 2233 2234 /* 2235 * Get a command, or push the ccb back to CAM and freeze the queue. 2236 */ 2237 if ((error = mly_alloc_command(sc, &mc))) { 2238 crit_enter(); 2239 xpt_freeze_simq(sim, 1); 2240 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2241 sc->mly_qfrzn_cnt++; 2242 crit_exit(); 2243 return(error); 2244 } 2245 2246 /* build the command */ 2247 mc->mc_data = csio->data_ptr; 2248 mc->mc_length = csio->dxfer_len; 2249 mc->mc_complete = mly_cam_complete; 2250 mc->mc_private = csio; 2251 2252 /* save the bus number in the ccb for later recovery XXX should be a better way */ 2253 csio->ccb_h.sim_priv.entries[0].field = bus; 2254 2255 /* build the packet for the controller */ 2256 ss = &mc->mc_packet->scsi_small; 2257 ss->opcode = MDACMD_SCSI; 2258 if (csio->ccb_h.flags & CAM_DIS_DISCONNECT) 2259 ss->command_control.disable_disconnect = 1; 2260 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 2261 ss->command_control.data_direction = MLY_CCB_WRITE; 2262 ss->data_size = csio->dxfer_len; 2263 ss->addr.phys.lun = csio->ccb_h.target_lun; 2264 ss->addr.phys.target = csio->ccb_h.target_id; 2265 ss->addr.phys.channel = bus; 2266 if (csio->ccb_h.timeout < (60 * 1000)) { 2267 ss->timeout.value = csio->ccb_h.timeout / 1000; 2268 ss->timeout.scale = MLY_TIMEOUT_SECONDS; 2269 } else if (csio->ccb_h.timeout < (60 * 60 * 1000)) { 2270 ss->timeout.value = csio->ccb_h.timeout / (60 * 1000); 2271 ss->timeout.scale = MLY_TIMEOUT_MINUTES; 2272 } else { 2273 ss->timeout.value = csio->ccb_h.timeout / (60 * 60 * 1000); /* overflow? */ 2274 ss->timeout.scale = MLY_TIMEOUT_HOURS; 2275 } 2276 ss->maximum_sense_size = csio->sense_len; 2277 ss->cdb_length = csio->cdb_len; 2278 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2279 bcopy(csio->cdb_io.cdb_ptr, ss->cdb, csio->cdb_len); 2280 } else { 2281 bcopy(csio->cdb_io.cdb_bytes, ss->cdb, csio->cdb_len); 2282 } 2283 2284 /* give the command to the controller */ 2285 if ((error = mly_start(mc))) { 2286 crit_enter(); 2287 xpt_freeze_simq(sim, 1); 2288 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2289 sc->mly_qfrzn_cnt++; 2290 crit_exit(); 2291 return(error); 2292 } 2293 2294 return(0); 2295 } 2296 2297 /******************************************************************************** 2298 * Check for possibly-completed commands. 2299 */ 2300 static void 2301 mly_cam_poll(struct cam_sim *sim) 2302 { 2303 struct mly_softc *sc = cam_sim_softc(sim); 2304 2305 debug_called(2); 2306 2307 mly_done(sc); 2308 } 2309 2310 /******************************************************************************** 2311 * Handle completion of a command - pass results back through the CCB 2312 */ 2313 static void 2314 mly_cam_complete(struct mly_command *mc) 2315 { 2316 struct mly_softc *sc = mc->mc_sc; 2317 struct ccb_scsiio *csio = (struct ccb_scsiio *)mc->mc_private; 2318 struct scsi_inquiry_data *inq = (struct scsi_inquiry_data *)csio->data_ptr; 2319 struct mly_btl *btl; 2320 u_int8_t cmd; 2321 int bus, target; 2322 2323 debug_called(2); 2324 2325 csio->scsi_status = mc->mc_status; 2326 switch(mc->mc_status) { 2327 case SCSI_STATUS_OK: 2328 /* 2329 * In order to report logical device type and status, we overwrite 2330 * the result of the INQUIRY command to logical devices. 2331 */ 2332 bus = csio->ccb_h.sim_priv.entries[0].field; 2333 target = csio->ccb_h.target_id; 2334 /* XXX validate bus/target? */ 2335 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_LOGICAL) { 2336 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2337 cmd = *csio->cdb_io.cdb_ptr; 2338 } else { 2339 cmd = csio->cdb_io.cdb_bytes[0]; 2340 } 2341 if (cmd == INQUIRY) { 2342 btl = &sc->mly_btl[bus][target]; 2343 padstr(inq->vendor, mly_describe_code(mly_table_device_type, btl->mb_type), 8); 2344 padstr(inq->product, mly_describe_code(mly_table_device_state, btl->mb_state), 16); 2345 padstr(inq->revision, "", 4); 2346 } 2347 } 2348 2349 debug(2, "SCSI_STATUS_OK"); 2350 csio->ccb_h.status = CAM_REQ_CMP; 2351 break; 2352 2353 case SCSI_STATUS_CHECK_COND: 2354 debug(1, "SCSI_STATUS_CHECK_COND sense %d resid %d", mc->mc_sense, mc->mc_resid); 2355 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR; 2356 bzero(&csio->sense_data, SSD_FULL_SIZE); 2357 bcopy(mc->mc_packet, &csio->sense_data, mc->mc_sense); 2358 csio->sense_len = mc->mc_sense; 2359 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 2360 csio->resid = mc->mc_resid; /* XXX this is a signed value... */ 2361 break; 2362 2363 case SCSI_STATUS_BUSY: 2364 debug(1, "SCSI_STATUS_BUSY"); 2365 csio->ccb_h.status = CAM_SCSI_BUSY; 2366 break; 2367 2368 default: 2369 debug(1, "unknown status 0x%x", csio->scsi_status); 2370 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2371 break; 2372 } 2373 2374 crit_enter(); 2375 if (sc->mly_qfrzn_cnt) { 2376 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2377 sc->mly_qfrzn_cnt--; 2378 } 2379 crit_exit(); 2380 2381 xpt_done((union ccb *)csio); 2382 mly_release_command(mc); 2383 } 2384 2385 /******************************************************************************** 2386 * Find a peripheral attahed at (bus),(target) 2387 */ 2388 static struct cam_periph * 2389 mly_find_periph(struct mly_softc *sc, int bus, int target) 2390 { 2391 struct cam_periph *periph; 2392 struct cam_path *path; 2393 int status; 2394 2395 status = xpt_create_path(&path, NULL, cam_sim_path(sc->mly_cam_sim[bus]), target, 0); 2396 if (status == CAM_REQ_CMP) { 2397 periph = cam_periph_find(path, NULL); 2398 xpt_free_path(path); 2399 } else { 2400 periph = NULL; 2401 } 2402 return(periph); 2403 } 2404 2405 /******************************************************************************** 2406 * Name the device at (bus)(target) 2407 */ 2408 static int 2409 mly_name_device(struct mly_softc *sc, int bus, int target) 2410 { 2411 struct cam_periph *periph; 2412 2413 if ((periph = mly_find_periph(sc, bus, target)) != NULL) { 2414 ksprintf(sc->mly_btl[bus][target].mb_name, "%s%d", periph->periph_name, periph->unit_number); 2415 return(0); 2416 } 2417 sc->mly_btl[bus][target].mb_name[0] = 0; 2418 return(ENOENT); 2419 } 2420 2421 /******************************************************************************** 2422 ******************************************************************************** 2423 Hardware Control 2424 ******************************************************************************** 2425 ********************************************************************************/ 2426 2427 /******************************************************************************** 2428 * Handshake with the firmware while the card is being initialised. 2429 */ 2430 static int 2431 mly_fwhandshake(struct mly_softc *sc) 2432 { 2433 u_int8_t error, param0, param1; 2434 int spinup = 0; 2435 2436 debug_called(1); 2437 2438 /* set HM_STSACK and let the firmware initialise */ 2439 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 2440 DELAY(1000); /* too short? */ 2441 2442 /* if HM_STSACK is still true, the controller is initialising */ 2443 if (!MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) 2444 return(0); 2445 mly_printf(sc, "controller initialisation started\n"); 2446 2447 /* spin waiting for initialisation to finish, or for a message to be delivered */ 2448 while (MLY_IDBR_TRUE(sc, MLY_HM_STSACK)) { 2449 /* check for a message */ 2450 if (MLY_ERROR_VALID(sc)) { 2451 error = MLY_GET_REG(sc, sc->mly_error_status) & ~MLY_MSG_EMPTY; 2452 param0 = MLY_GET_REG(sc, sc->mly_command_mailbox); 2453 param1 = MLY_GET_REG(sc, sc->mly_command_mailbox + 1); 2454 2455 switch(error) { 2456 case MLY_MSG_SPINUP: 2457 if (!spinup) { 2458 mly_printf(sc, "drive spinup in progress\n"); 2459 spinup = 1; /* only print this once (should print drive being spun?) */ 2460 } 2461 break; 2462 case MLY_MSG_RACE_RECOVERY_FAIL: 2463 mly_printf(sc, "mirror race recovery failed, one or more drives offline\n"); 2464 break; 2465 case MLY_MSG_RACE_IN_PROGRESS: 2466 mly_printf(sc, "mirror race recovery in progress\n"); 2467 break; 2468 case MLY_MSG_RACE_ON_CRITICAL: 2469 mly_printf(sc, "mirror race recovery on a critical drive\n"); 2470 break; 2471 case MLY_MSG_PARITY_ERROR: 2472 mly_printf(sc, "FATAL MEMORY PARITY ERROR\n"); 2473 return(ENXIO); 2474 default: 2475 mly_printf(sc, "unknown initialisation code 0x%x\n", error); 2476 } 2477 } 2478 } 2479 return(0); 2480 } 2481 2482 /******************************************************************************** 2483 ******************************************************************************** 2484 Debugging and Diagnostics 2485 ******************************************************************************** 2486 ********************************************************************************/ 2487 2488 /******************************************************************************** 2489 * Print some information about the controller. 2490 */ 2491 static void 2492 mly_describe_controller(struct mly_softc *sc) 2493 { 2494 struct mly_ioctl_getcontrollerinfo *mi = sc->mly_controllerinfo; 2495 2496 mly_printf(sc, "%16s, %d channel%s, firmware %d.%02d-%d-%02d (%02d%02d%02d%02d), %dMB RAM\n", 2497 mi->controller_name, mi->physical_channels_present, (mi->physical_channels_present) > 1 ? "s" : "", 2498 mi->fw_major, mi->fw_minor, mi->fw_turn, mi->fw_build, /* XXX turn encoding? */ 2499 mi->fw_century, mi->fw_year, mi->fw_month, mi->fw_day, 2500 mi->memory_size); 2501 2502 if (bootverbose) { 2503 mly_printf(sc, "%s %s (%x), %dMHz %d-bit %.16s\n", 2504 mly_describe_code(mly_table_oemname, mi->oem_information), 2505 mly_describe_code(mly_table_controllertype, mi->controller_type), mi->controller_type, 2506 mi->interface_speed, mi->interface_width, mi->interface_name); 2507 mly_printf(sc, "%dMB %dMHz %d-bit %s%s%s, cache %dMB\n", 2508 mi->memory_size, mi->memory_speed, mi->memory_width, 2509 mly_describe_code(mly_table_memorytype, mi->memory_type), 2510 mi->memory_parity ? "+parity": "",mi->memory_ecc ? "+ECC": "", 2511 mi->cache_size); 2512 mly_printf(sc, "CPU: %s @ %dMHZ\n", 2513 mly_describe_code(mly_table_cputype, mi->cpu[0].type), mi->cpu[0].speed); 2514 if (mi->l2cache_size != 0) 2515 mly_printf(sc, "%dKB L2 cache\n", mi->l2cache_size); 2516 if (mi->exmemory_size != 0) 2517 mly_printf(sc, "%dMB %dMHz %d-bit private %s%s%s\n", 2518 mi->exmemory_size, mi->exmemory_speed, mi->exmemory_width, 2519 mly_describe_code(mly_table_memorytype, mi->exmemory_type), 2520 mi->exmemory_parity ? "+parity": "",mi->exmemory_ecc ? "+ECC": ""); 2521 mly_printf(sc, "battery backup %s\n", mi->bbu_present ? "present" : "not installed"); 2522 mly_printf(sc, "maximum data transfer %d blocks, maximum sg entries/command %d\n", 2523 mi->maximum_block_count, mi->maximum_sg_entries); 2524 mly_printf(sc, "logical devices present/critical/offline %d/%d/%d\n", 2525 mi->logical_devices_present, mi->logical_devices_critical, mi->logical_devices_offline); 2526 mly_printf(sc, "physical devices present %d\n", 2527 mi->physical_devices_present); 2528 mly_printf(sc, "physical disks present/offline %d/%d\n", 2529 mi->physical_disks_present, mi->physical_disks_offline); 2530 mly_printf(sc, "%d physical channel%s, %d virtual channel%s of %d possible\n", 2531 mi->physical_channels_present, mi->physical_channels_present == 1 ? "" : "s", 2532 mi->virtual_channels_present, mi->virtual_channels_present == 1 ? "" : "s", 2533 mi->virtual_channels_possible); 2534 mly_printf(sc, "%d parallel commands supported\n", mi->maximum_parallel_commands); 2535 mly_printf(sc, "%dMB flash ROM, %d of %d maximum cycles\n", 2536 mi->flash_size, mi->flash_age, mi->flash_maximum_age); 2537 } 2538 } 2539 2540 #ifdef MLY_DEBUG 2541 /******************************************************************************** 2542 * Print some controller state 2543 */ 2544 static void 2545 mly_printstate(struct mly_softc *sc) 2546 { 2547 mly_printf(sc, "IDBR %02x ODBR %02x ERROR %02x (%x %x %x)\n", 2548 MLY_GET_REG(sc, sc->mly_idbr), 2549 MLY_GET_REG(sc, sc->mly_odbr), 2550 MLY_GET_REG(sc, sc->mly_error_status), 2551 sc->mly_idbr, 2552 sc->mly_odbr, 2553 sc->mly_error_status); 2554 mly_printf(sc, "IMASK %02x ISTATUS %02x\n", 2555 MLY_GET_REG(sc, sc->mly_interrupt_mask), 2556 MLY_GET_REG(sc, sc->mly_interrupt_status)); 2557 mly_printf(sc, "COMMAND %02x %02x %02x %02x %02x %02x %02x %02x\n", 2558 MLY_GET_REG(sc, sc->mly_command_mailbox), 2559 MLY_GET_REG(sc, sc->mly_command_mailbox + 1), 2560 MLY_GET_REG(sc, sc->mly_command_mailbox + 2), 2561 MLY_GET_REG(sc, sc->mly_command_mailbox + 3), 2562 MLY_GET_REG(sc, sc->mly_command_mailbox + 4), 2563 MLY_GET_REG(sc, sc->mly_command_mailbox + 5), 2564 MLY_GET_REG(sc, sc->mly_command_mailbox + 6), 2565 MLY_GET_REG(sc, sc->mly_command_mailbox + 7)); 2566 mly_printf(sc, "STATUS %02x %02x %02x %02x %02x %02x %02x %02x\n", 2567 MLY_GET_REG(sc, sc->mly_status_mailbox), 2568 MLY_GET_REG(sc, sc->mly_status_mailbox + 1), 2569 MLY_GET_REG(sc, sc->mly_status_mailbox + 2), 2570 MLY_GET_REG(sc, sc->mly_status_mailbox + 3), 2571 MLY_GET_REG(sc, sc->mly_status_mailbox + 4), 2572 MLY_GET_REG(sc, sc->mly_status_mailbox + 5), 2573 MLY_GET_REG(sc, sc->mly_status_mailbox + 6), 2574 MLY_GET_REG(sc, sc->mly_status_mailbox + 7)); 2575 mly_printf(sc, " %04x %08x\n", 2576 MLY_GET_REG2(sc, sc->mly_status_mailbox), 2577 MLY_GET_REG4(sc, sc->mly_status_mailbox + 4)); 2578 } 2579 2580 struct mly_softc *mly_softc0 = NULL; 2581 void 2582 mly_printstate0(void) 2583 { 2584 if (mly_softc0 != NULL) 2585 mly_printstate(mly_softc0); 2586 } 2587 2588 /******************************************************************************** 2589 * Print a command 2590 */ 2591 static void 2592 mly_print_command(struct mly_command *mc) 2593 { 2594 struct mly_softc *sc = mc->mc_sc; 2595 2596 mly_printf(sc, "COMMAND @ %p\n", mc); 2597 mly_printf(sc, " slot %d\n", mc->mc_slot); 2598 mly_printf(sc, " status 0x%x\n", mc->mc_status); 2599 mly_printf(sc, " sense len %d\n", mc->mc_sense); 2600 mly_printf(sc, " resid %d\n", mc->mc_resid); 2601 mly_printf(sc, " packet %p/0x%llx\n", mc->mc_packet, mc->mc_packetphys); 2602 if (mc->mc_packet != NULL) 2603 mly_print_packet(mc); 2604 mly_printf(sc, " data %p/%d\n", mc->mc_data, mc->mc_length); 2605 mly_printf(sc, " flags %b\n", mc->mc_flags, "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n"); 2606 mly_printf(sc, " complete %p\n", mc->mc_complete); 2607 mly_printf(sc, " private %p\n", mc->mc_private); 2608 } 2609 2610 /******************************************************************************** 2611 * Print a command packet 2612 */ 2613 static void 2614 mly_print_packet(struct mly_command *mc) 2615 { 2616 struct mly_softc *sc = mc->mc_sc; 2617 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2618 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2619 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2620 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2621 int transfer; 2622 2623 mly_printf(sc, " command_id %d\n", ge->command_id); 2624 mly_printf(sc, " opcode %d\n", ge->opcode); 2625 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2626 ge->command_control.force_unit_access, 2627 ge->command_control.disable_page_out, 2628 ge->command_control.extended_sg_table, 2629 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2630 ge->command_control.no_auto_sense, 2631 ge->command_control.disable_disconnect); 2632 mly_printf(sc, " data_size %d\n", ge->data_size); 2633 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2634 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2635 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2636 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2637 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2638 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2639 mly_printf(sc, " timeout %d %s\n", 2640 ge->timeout.value, 2641 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2642 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2643 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2644 switch(ge->opcode) { 2645 case MDACMD_SCSIPT: 2646 case MDACMD_SCSI: 2647 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2648 mly_printf(sc, " cdb %*D\n", ss->cdb_length, ss->cdb, " "); 2649 transfer = 1; 2650 break; 2651 case MDACMD_SCSILC: 2652 case MDACMD_SCSILCPT: 2653 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2654 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2655 transfer = 1; 2656 break; 2657 case MDACMD_IOCTL: 2658 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2659 switch(io->sub_ioctl) { 2660 case MDACIOCTL_SETMEMORYMAILBOX: 2661 mly_printf(sc, " health_buffer_size %d\n", 2662 io->param.setmemorymailbox.health_buffer_size); 2663 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2664 io->param.setmemorymailbox.health_buffer_physaddr); 2665 mly_printf(sc, " command_mailbox 0x%llx\n", 2666 io->param.setmemorymailbox.command_mailbox_physaddr); 2667 mly_printf(sc, " status_mailbox 0x%llx\n", 2668 io->param.setmemorymailbox.status_mailbox_physaddr); 2669 transfer = 0; 2670 break; 2671 2672 case MDACIOCTL_SETREALTIMECLOCK: 2673 case MDACIOCTL_GETHEALTHSTATUS: 2674 case MDACIOCTL_GETCONTROLLERINFO: 2675 case MDACIOCTL_GETLOGDEVINFOVALID: 2676 case MDACIOCTL_GETPHYSDEVINFOVALID: 2677 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2678 case MDACIOCTL_GETLOGDEVSTATISTICS: 2679 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2680 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2681 case MDACIOCTL_CREATENEWCONF: 2682 case MDACIOCTL_ADDNEWCONF: 2683 case MDACIOCTL_GETDEVCONFINFO: 2684 case MDACIOCTL_GETFREESPACELIST: 2685 case MDACIOCTL_MORE: 2686 case MDACIOCTL_SETPHYSDEVPARAMETER: 2687 case MDACIOCTL_GETPHYSDEVPARAMETER: 2688 case MDACIOCTL_GETLOGDEVPARAMETER: 2689 case MDACIOCTL_SETLOGDEVPARAMETER: 2690 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2691 transfer = 1; 2692 break; 2693 2694 case MDACIOCTL_GETEVENT: 2695 mly_printf(sc, " event %d\n", 2696 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2697 transfer = 1; 2698 break; 2699 2700 case MDACIOCTL_SETRAIDDEVSTATE: 2701 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2702 transfer = 0; 2703 break; 2704 2705 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2706 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2707 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2708 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2709 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2710 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2711 transfer = 0; 2712 break; 2713 2714 case MDACIOCTL_GETGROUPCONFINFO: 2715 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2716 transfer = 1; 2717 break; 2718 2719 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2720 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2721 case MDACIOCTL_STARTDISOCVERY: 2722 case MDACIOCTL_INITPHYSDEVSTART: 2723 case MDACIOCTL_INITPHYSDEVSTOP: 2724 case MDACIOCTL_INITRAIDDEVSTART: 2725 case MDACIOCTL_INITRAIDDEVSTOP: 2726 case MDACIOCTL_REBUILDRAIDDEVSTART: 2727 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2728 case MDACIOCTL_MAKECONSISTENTDATASTART: 2729 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2730 case MDACIOCTL_CONSISTENCYCHECKSTART: 2731 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2732 case MDACIOCTL_RESETDEVICE: 2733 case MDACIOCTL_FLUSHDEVICEDATA: 2734 case MDACIOCTL_PAUSEDEVICE: 2735 case MDACIOCTL_UNPAUSEDEVICE: 2736 case MDACIOCTL_LOCATEDEVICE: 2737 case MDACIOCTL_SETMASTERSLAVEMODE: 2738 case MDACIOCTL_DELETERAIDDEV: 2739 case MDACIOCTL_REPLACEINTERNALDEV: 2740 case MDACIOCTL_CLEARCONF: 2741 case MDACIOCTL_GETCONTROLLERPARAMETER: 2742 case MDACIOCTL_SETCONTRLLERPARAMETER: 2743 case MDACIOCTL_CLEARCONFSUSPMODE: 2744 case MDACIOCTL_STOREIMAGE: 2745 case MDACIOCTL_READIMAGE: 2746 case MDACIOCTL_FLASHIMAGES: 2747 case MDACIOCTL_RENAMERAIDDEV: 2748 default: /* no idea what to print */ 2749 transfer = 0; 2750 break; 2751 } 2752 break; 2753 2754 case MDACMD_IOCTLCHECK: 2755 case MDACMD_MEMCOPY: 2756 default: 2757 transfer = 0; 2758 break; /* print nothing */ 2759 } 2760 if (transfer) { 2761 if (ge->command_control.extended_sg_table) { 2762 mly_printf(sc, " sg table 0x%llx/%d\n", 2763 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2764 } else { 2765 mly_printf(sc, " 0000 0x%llx/%lld\n", 2766 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2767 mly_printf(sc, " 0001 0x%llx/%lld\n", 2768 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2769 } 2770 } 2771 } 2772 2773 /******************************************************************************** 2774 * Panic in a slightly informative fashion 2775 */ 2776 static void 2777 mly_panic(struct mly_softc *sc, char *reason) 2778 { 2779 mly_printstate(sc); 2780 panic(reason); 2781 } 2782 2783 /******************************************************************************** 2784 * Print queue statistics, callable from DDB. 2785 */ 2786 void 2787 mly_print_controller(int controller) 2788 { 2789 struct mly_softc *sc; 2790 2791 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2792 kprintf("mly: controller %d invalid\n", controller); 2793 } else { 2794 device_printf(sc->mly_dev, "queue curr max\n"); 2795 device_printf(sc->mly_dev, "free %04d/%04d\n", 2796 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2797 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2798 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2799 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2800 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2801 } 2802 } 2803 #endif 2804 2805 2806 /******************************************************************************** 2807 ******************************************************************************** 2808 Control device interface 2809 ******************************************************************************** 2810 ********************************************************************************/ 2811 2812 /******************************************************************************** 2813 * Accept an open operation on the control device. 2814 */ 2815 static int 2816 mly_user_open(struct dev_open_args *ap) 2817 { 2818 cdev_t dev = ap->a_head.a_dev; 2819 int unit = minor(dev); 2820 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2821 2822 sc->mly_state |= MLY_STATE_OPEN; 2823 return(0); 2824 } 2825 2826 /******************************************************************************** 2827 * Accept the last close on the control device. 2828 */ 2829 static int 2830 mly_user_close(struct dev_close_args *ap) 2831 { 2832 cdev_t dev = ap->a_head.a_dev; 2833 int unit = minor(dev); 2834 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2835 2836 sc->mly_state &= ~MLY_STATE_OPEN; 2837 return (0); 2838 } 2839 2840 /******************************************************************************** 2841 * Handle controller-specific control operations. 2842 */ 2843 static int 2844 mly_user_ioctl(struct dev_ioctl_args *ap) 2845 { 2846 cdev_t dev = ap->a_head.a_dev; 2847 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2848 struct mly_user_command *uc = (struct mly_user_command *)ap->a_data; 2849 struct mly_user_health *uh = (struct mly_user_health *)ap->a_data; 2850 2851 switch(ap->a_cmd) { 2852 case MLYIO_COMMAND: 2853 return(mly_user_command(sc, uc)); 2854 case MLYIO_HEALTH: 2855 return(mly_user_health(sc, uh)); 2856 default: 2857 return(ENOIOCTL); 2858 } 2859 } 2860 2861 /******************************************************************************** 2862 * Execute a command passed in from userspace. 2863 * 2864 * The control structure contains the actual command for the controller, as well 2865 * as the user-space data pointer and data size, and an optional sense buffer 2866 * size/pointer. On completion, the data size is adjusted to the command 2867 * residual, and the sense buffer size to the size of the returned sense data. 2868 * 2869 */ 2870 static int 2871 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2872 { 2873 struct mly_command *mc; 2874 int error; 2875 2876 /* allocate a command */ 2877 if (mly_alloc_command(sc, &mc)) { 2878 error = ENOMEM; 2879 goto out; /* XXX Linux version will wait for a command */ 2880 } 2881 2882 /* handle data size/direction */ 2883 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2884 if (mc->mc_length > 0) 2885 mc->mc_data = kmalloc(mc->mc_length, M_DEVBUF, M_INTWAIT); 2886 if (uc->DataTransferLength > 0) { 2887 mc->mc_flags |= MLY_CMD_DATAIN; 2888 bzero(mc->mc_data, mc->mc_length); 2889 } 2890 if (uc->DataTransferLength < 0) { 2891 mc->mc_flags |= MLY_CMD_DATAOUT; 2892 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2893 goto out; 2894 } 2895 2896 /* copy the controller command */ 2897 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2898 2899 /* clear command completion handler so that we get woken up */ 2900 mc->mc_complete = NULL; 2901 2902 /* execute the command */ 2903 if ((error = mly_start(mc)) != 0) 2904 goto out; 2905 crit_enter(); 2906 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2907 tsleep(mc, 0, "mlyioctl", 0); 2908 crit_exit(); 2909 2910 /* return the data to userspace */ 2911 if (uc->DataTransferLength > 0) 2912 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2913 goto out; 2914 2915 /* return the sense buffer to userspace */ 2916 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2917 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2918 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2919 goto out; 2920 } 2921 2922 /* return command results to userspace (caller will copy out) */ 2923 uc->DataTransferLength = mc->mc_resid; 2924 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2925 uc->CommandStatus = mc->mc_status; 2926 error = 0; 2927 2928 out: 2929 if (mc->mc_data != NULL) 2930 kfree(mc->mc_data, M_DEVBUF); 2931 if (mc != NULL) 2932 mly_release_command(mc); 2933 return(error); 2934 } 2935 2936 /******************************************************************************** 2937 * Return health status to userspace. If the health change index in the user 2938 * structure does not match that currently exported by the controller, we 2939 * return the current status immediately. Otherwise, we block until either 2940 * interrupted or new status is delivered. 2941 */ 2942 static int 2943 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2944 { 2945 struct mly_health_status mh; 2946 int error; 2947 2948 /* fetch the current health status from userspace */ 2949 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2950 return(error); 2951 2952 /* spin waiting for a status update */ 2953 crit_enter(); 2954 error = EWOULDBLOCK; 2955 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2956 error = tsleep(&sc->mly_event_change, PCATCH, "mlyhealth", 0); 2957 crit_exit(); 2958 2959 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2960 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2961 sizeof(uh->HealthStatusBuffer)); 2962 return(error); 2963 } 2964 2965 static int 2966 mly_timeout(struct mly_softc *sc) 2967 { 2968 struct mly_command *mc; 2969 int deadline; 2970 2971 deadline = time_second - MLY_CMD_TIMEOUT; 2972 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2973 if ((mc->mc_timestamp < deadline)) { 2974 device_printf(sc->mly_dev, 2975 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2976 (int)(time_second - mc->mc_timestamp)); 2977 } 2978 } 2979 2980 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 2981 (timeout_t *)mly_timeout, sc); 2982 2983 return (0); 2984 } 2985