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 1.50 2010/01/28 08:41:30 mav Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/malloc.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/conf.h> 36 #include <sys/device.h> 37 #include <sys/ctype.h> 38 #include <sys/stat.h> 39 #include <sys/rman.h> 40 #include <sys/thread2.h> 41 42 #include <bus/cam/cam.h> 43 #include <bus/cam/cam_ccb.h> 44 #include <bus/cam/cam_periph.h> 45 #include <bus/cam/cam_sim.h> 46 #include <bus/cam/cam_xpt_periph.h> 47 #include <bus/cam/cam_xpt_sim.h> 48 #include <bus/cam/scsi/scsi_all.h> 49 #include <bus/cam/scsi/scsi_message.h> 50 51 #include <bus/pci/pcireg.h> 52 #include <bus/pci/pcivar.h> 53 54 #include <dev/raid/mly/mlyreg.h> 55 #include <dev/raid/mly/mlyio.h> 56 #include <dev/raid/mly/mlyvar.h> 57 #include <dev/raid/mly/mly_tables.h> 58 59 static int mly_probe(device_t dev); 60 static int mly_attach(device_t dev); 61 static int mly_pci_attach(struct mly_softc *sc); 62 static int mly_detach(device_t dev); 63 static int mly_shutdown(device_t dev); 64 static void mly_intr(void *arg); 65 66 static int mly_sg_map(struct mly_softc *sc); 67 static void mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 68 static int mly_mmbox_map(struct mly_softc *sc); 69 static void mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error); 70 static void mly_free(struct mly_softc *sc); 71 72 static int mly_get_controllerinfo(struct mly_softc *sc); 73 static void mly_scan_devices(struct mly_softc *sc); 74 static void mly_rescan_btl(struct mly_softc *sc, int bus, int target); 75 static void mly_complete_rescan(struct mly_command *mc); 76 static int mly_get_eventstatus(struct mly_softc *sc); 77 static int mly_enable_mmbox(struct mly_softc *sc); 78 static int mly_flush(struct mly_softc *sc); 79 static int mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, 80 size_t datasize, u_int8_t *status, void *sense_buffer, size_t *sense_length); 81 static void mly_check_event(struct mly_softc *sc); 82 static void mly_fetch_event(struct mly_softc *sc); 83 static void mly_complete_event(struct mly_command *mc); 84 static void mly_process_event(struct mly_softc *sc, struct mly_event *me); 85 static void mly_periodic(void *data); 86 87 static int mly_immediate_command(struct mly_command *mc); 88 static int mly_start(struct mly_command *mc); 89 static void mly_done(struct mly_softc *sc); 90 static void mly_complete(void *context, int pending); 91 92 static int mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp); 93 static void mly_release_command(struct mly_command *mc); 94 static void mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error); 95 static int mly_alloc_commands(struct mly_softc *sc); 96 static void mly_release_commands(struct mly_softc *sc); 97 static void mly_map_command(struct mly_command *mc); 98 static void mly_unmap_command(struct mly_command *mc); 99 100 static int mly_cam_attach(struct mly_softc *sc); 101 static void mly_cam_detach(struct mly_softc *sc); 102 static void mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target); 103 static void mly_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 104 static void mly_cam_action(struct cam_sim *sim, union ccb *ccb); 105 static int mly_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 106 static void mly_cam_poll(struct cam_sim *sim); 107 static void mly_cam_complete(struct mly_command *mc); 108 static struct cam_periph *mly_find_periph(struct mly_softc *sc, int bus, int target); 109 static int mly_name_device(struct mly_softc *sc, int bus, int target); 110 111 static int mly_fwhandshake(struct mly_softc *sc); 112 113 static void mly_describe_controller(struct mly_softc *sc); 114 #ifdef MLY_DEBUG 115 static void mly_printstate(struct mly_softc *sc); 116 static void mly_print_command(struct mly_command *mc); 117 static void mly_print_packet(struct mly_command *mc); 118 static void mly_panic(struct mly_softc *sc, char *reason); 119 static int mly_timeout(struct mly_softc *sc); 120 #endif 121 void mly_print_controller(int controller); 122 123 124 static d_open_t mly_user_open; 125 static d_close_t mly_user_close; 126 static d_ioctl_t mly_user_ioctl; 127 static int mly_user_command(struct mly_softc *sc, struct mly_user_command *uc); 128 static int mly_user_health(struct mly_softc *sc, struct mly_user_health *uh); 129 130 #define MLY_CMD_TIMEOUT 20 131 132 static device_method_t mly_methods[] = { 133 /* Device interface */ 134 DEVMETHOD(device_probe, mly_probe), 135 DEVMETHOD(device_attach, mly_attach), 136 DEVMETHOD(device_detach, mly_detach), 137 DEVMETHOD(device_shutdown, mly_shutdown), 138 DEVMETHOD_END 139 }; 140 141 static driver_t mly_pci_driver = { 142 "mly", 143 mly_methods, 144 sizeof(struct mly_softc) 145 }; 146 147 static devclass_t mly_devclass; 148 DRIVER_MODULE(mly, pci, mly_pci_driver, mly_devclass, NULL, NULL); 149 MODULE_DEPEND(mly, pci, 1, 1, 1); 150 MODULE_DEPEND(mly, cam, 1, 1, 1); 151 152 static struct dev_ops mly_ops = { 153 { "mly", 0, 0 }, 154 .d_open = mly_user_open, 155 .d_close = mly_user_close, 156 .d_ioctl = mly_user_ioctl, 157 }; 158 159 /******************************************************************************** 160 ******************************************************************************** 161 Device Interface 162 ******************************************************************************** 163 ********************************************************************************/ 164 165 static struct mly_ident 166 { 167 u_int16_t vendor; 168 u_int16_t device; 169 u_int16_t subvendor; 170 u_int16_t subdevice; 171 int hwif; 172 char *desc; 173 } mly_identifiers[] = { 174 {0x1069, 0xba56, 0x1069, 0x0040, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 2000"}, 175 {0x1069, 0xba56, 0x1069, 0x0030, MLY_HWIF_STRONGARM, "Mylex eXtremeRAID 3000"}, 176 {0x1069, 0x0050, 0x1069, 0x0050, MLY_HWIF_I960RX, "Mylex AcceleRAID 352"}, 177 {0x1069, 0x0050, 0x1069, 0x0052, MLY_HWIF_I960RX, "Mylex AcceleRAID 170"}, 178 {0x1069, 0x0050, 0x1069, 0x0054, MLY_HWIF_I960RX, "Mylex AcceleRAID 160"}, 179 {0, 0, 0, 0, 0, 0} 180 }; 181 182 /******************************************************************************** 183 * Compare the provided PCI device with the list we support. 184 */ 185 static int 186 mly_probe(device_t dev) 187 { 188 struct mly_ident *m; 189 190 debug_called(1); 191 192 for (m = mly_identifiers; m->vendor != 0; m++) { 193 if ((m->vendor == pci_get_vendor(dev)) && 194 (m->device == pci_get_device(dev)) && 195 ((m->subvendor == 0) || ((m->subvendor == pci_get_subvendor(dev)) && 196 (m->subdevice == pci_get_subdevice(dev))))) { 197 198 device_set_desc(dev, m->desc); 199 return(BUS_PROBE_DEFAULT); /* allow room to be overridden */ 200 } 201 } 202 return(ENXIO); 203 } 204 205 /******************************************************************************** 206 * Initialise the controller and softc 207 */ 208 static int 209 mly_attach(device_t dev) 210 { 211 struct mly_softc *sc = device_get_softc(dev); 212 int error; 213 214 debug_called(1); 215 216 sc->mly_dev = dev; 217 218 #ifdef MLY_DEBUG 219 if (device_get_unit(sc->mly_dev) == 0) 220 mly_softc0 = sc; 221 #endif 222 223 /* 224 * Do PCI-specific initialisation. 225 */ 226 if ((error = mly_pci_attach(sc)) != 0) 227 goto out; 228 229 callout_init(&sc->mly_periodic); 230 callout_init(&sc->mly_timeout); 231 232 /* 233 * Initialise per-controller queues. 234 */ 235 mly_initq_free(sc); 236 mly_initq_busy(sc); 237 mly_initq_complete(sc); 238 239 /* 240 * Initialise command-completion task. 241 */ 242 TASK_INIT(&sc->mly_task_complete, 0, mly_complete, sc); 243 244 /* disable interrupts before we start talking to the controller */ 245 MLY_MASK_INTERRUPTS(sc); 246 247 /* 248 * Wait for the controller to come ready, handshake with the firmware if required. 249 * This is typically only necessary on platforms where the controller BIOS does not 250 * run. 251 */ 252 if ((error = mly_fwhandshake(sc))) 253 goto out; 254 255 /* 256 * Allocate initial command buffers. 257 */ 258 if ((error = mly_alloc_commands(sc))) 259 goto out; 260 261 /* 262 * Obtain controller feature information 263 */ 264 if ((error = mly_get_controllerinfo(sc))) 265 goto out; 266 267 /* 268 * Reallocate command buffers now we know how many we want. 269 */ 270 mly_release_commands(sc); 271 if ((error = mly_alloc_commands(sc))) 272 goto out; 273 274 /* 275 * Get the current event counter for health purposes, populate the initial 276 * health status buffer. 277 */ 278 if ((error = mly_get_eventstatus(sc))) 279 goto out; 280 281 /* 282 * Enable memory-mailbox mode. 283 */ 284 if ((error = mly_enable_mmbox(sc))) 285 goto out; 286 287 /* 288 * Attach to CAM. 289 */ 290 if ((error = mly_cam_attach(sc))) 291 goto out; 292 293 /* 294 * Print a little information about the controller 295 */ 296 mly_describe_controller(sc); 297 298 /* 299 * Mark all attached devices for rescan. 300 */ 301 mly_scan_devices(sc); 302 303 /* 304 * Instigate the first status poll immediately. Rescan completions won't 305 * happen until interrupts are enabled, which should still be before 306 * the SCSI subsystem gets to us, courtesy of the "SCSI settling delay". 307 */ 308 mly_periodic(sc); 309 310 /* 311 * Create the control device. 312 */ 313 sc->mly_dev_t = make_dev(&mly_ops, device_get_unit(sc->mly_dev), 314 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 315 "mly%d", device_get_unit(sc->mly_dev)); 316 sc->mly_dev_t->si_drv1 = sc; 317 318 /* enable interrupts now */ 319 MLY_UNMASK_INTERRUPTS(sc); 320 321 #ifdef MLY_DEBUG 322 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 323 (timeout_t *)mly_timeout, sc); 324 #endif 325 326 out: 327 if (error != 0) 328 mly_free(sc); 329 return(error); 330 } 331 332 /******************************************************************************** 333 * Perform PCI-specific initialisation. 334 */ 335 static int 336 mly_pci_attach(struct mly_softc *sc) 337 { 338 int i, error; 339 u_int32_t command; 340 341 debug_called(1); 342 343 /* assume failure is 'not configured' */ 344 error = ENXIO; 345 346 /* 347 * Verify that the adapter is correctly set up in PCI space. 348 * 349 * XXX we shouldn't do this; the PCI code should. 350 */ 351 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 352 command |= PCIM_CMD_BUSMASTEREN; 353 pci_write_config(sc->mly_dev, PCIR_COMMAND, command, 2); 354 command = pci_read_config(sc->mly_dev, PCIR_COMMAND, 2); 355 if (!(command & PCIM_CMD_BUSMASTEREN)) { 356 mly_printf(sc, "can't enable busmaster feature\n"); 357 goto fail; 358 } 359 if ((command & PCIM_CMD_MEMEN) == 0) { 360 mly_printf(sc, "memory window not available\n"); 361 goto fail; 362 } 363 364 /* 365 * Allocate the PCI register window. 366 */ 367 sc->mly_regs_rid = PCIR_BAR(0); /* first base address register */ 368 if ((sc->mly_regs_resource = bus_alloc_resource_any(sc->mly_dev, 369 SYS_RES_MEMORY, &sc->mly_regs_rid, RF_ACTIVE)) == NULL) { 370 mly_printf(sc, "can't allocate register window\n"); 371 goto fail; 372 } 373 sc->mly_btag = rman_get_bustag(sc->mly_regs_resource); 374 sc->mly_bhandle = rman_get_bushandle(sc->mly_regs_resource); 375 376 /* 377 * Allocate and connect our interrupt. 378 */ 379 sc->mly_irq_rid = 0; 380 if ((sc->mly_irq = bus_alloc_resource_any(sc->mly_dev, SYS_RES_IRQ, 381 &sc->mly_irq_rid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 382 mly_printf(sc, "can't allocate interrupt\n"); 383 goto fail; 384 } 385 error = bus_setup_intr(sc->mly_dev, sc->mly_irq, 0, 386 mly_intr, sc, &sc->mly_intr, NULL); 387 if (error) { 388 mly_printf(sc, "can't set up interrupt\n"); 389 goto fail; 390 } 391 392 /* assume failure is 'out of memory' */ 393 error = ENOMEM; 394 395 /* 396 * Allocate the parent bus DMA tag appropriate for our PCI interface. 397 * 398 * Note that all of these controllers are 64-bit capable. 399 */ 400 if (bus_dma_tag_create(NULL, /* parent */ 401 1, 0, /* alignment, boundary */ 402 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 403 BUS_SPACE_MAXADDR, /* highaddr */ 404 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 405 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 406 BUS_DMA_ALLOCNOW, /* flags */ 407 &sc->mly_parent_dmat)) { 408 mly_printf(sc, "can't allocate parent DMA tag\n"); 409 goto fail; 410 } 411 412 /* 413 * Create DMA tag for mapping buffers into controller-addressable space. 414 */ 415 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 416 1, 0, /* alignment, boundary */ 417 BUS_SPACE_MAXADDR, /* lowaddr */ 418 BUS_SPACE_MAXADDR, /* highaddr */ 419 MAXBSIZE, MLY_MAX_SGENTRIES, /* maxsize, nsegments */ 420 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 421 0, /* flags */ 422 &sc->mly_buffer_dmat)) { 423 mly_printf(sc, "can't allocate buffer DMA tag\n"); 424 goto fail; 425 } 426 427 /* 428 * Initialise the DMA tag for command packets. 429 */ 430 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 431 1, 0, /* alignment, boundary */ 432 BUS_SPACE_MAXADDR, /* lowaddr */ 433 BUS_SPACE_MAXADDR, /* highaddr */ 434 sizeof(union mly_command_packet) * MLY_MAX_COMMANDS, 1, /* maxsize, nsegments */ 435 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 436 BUS_DMA_ALLOCNOW, /* flags */ 437 &sc->mly_packet_dmat)) { 438 mly_printf(sc, "can't allocate command packet DMA tag\n"); 439 goto fail; 440 } 441 442 /* 443 * Detect the hardware interface version 444 */ 445 for (i = 0; mly_identifiers[i].vendor != 0; i++) { 446 if ((mly_identifiers[i].vendor == pci_get_vendor(sc->mly_dev)) && 447 (mly_identifiers[i].device == pci_get_device(sc->mly_dev))) { 448 sc->mly_hwif = mly_identifiers[i].hwif; 449 switch(sc->mly_hwif) { 450 case MLY_HWIF_I960RX: 451 debug(1, "set hardware up for i960RX"); 452 sc->mly_doorbell_true = 0x00; 453 sc->mly_command_mailbox = MLY_I960RX_COMMAND_MAILBOX; 454 sc->mly_status_mailbox = MLY_I960RX_STATUS_MAILBOX; 455 sc->mly_idbr = MLY_I960RX_IDBR; 456 sc->mly_odbr = MLY_I960RX_ODBR; 457 sc->mly_error_status = MLY_I960RX_ERROR_STATUS; 458 sc->mly_interrupt_status = MLY_I960RX_INTERRUPT_STATUS; 459 sc->mly_interrupt_mask = MLY_I960RX_INTERRUPT_MASK; 460 break; 461 case MLY_HWIF_STRONGARM: 462 debug(1, "set hardware up for StrongARM"); 463 sc->mly_doorbell_true = 0xff; /* doorbell 'true' is 0 */ 464 sc->mly_command_mailbox = MLY_STRONGARM_COMMAND_MAILBOX; 465 sc->mly_status_mailbox = MLY_STRONGARM_STATUS_MAILBOX; 466 sc->mly_idbr = MLY_STRONGARM_IDBR; 467 sc->mly_odbr = MLY_STRONGARM_ODBR; 468 sc->mly_error_status = MLY_STRONGARM_ERROR_STATUS; 469 sc->mly_interrupt_status = MLY_STRONGARM_INTERRUPT_STATUS; 470 sc->mly_interrupt_mask = MLY_STRONGARM_INTERRUPT_MASK; 471 break; 472 } 473 break; 474 } 475 } 476 477 /* 478 * Create the scatter/gather mappings. 479 */ 480 if ((error = mly_sg_map(sc))) 481 goto fail; 482 483 /* 484 * Allocate and map the memory mailbox 485 */ 486 if ((error = mly_mmbox_map(sc))) 487 goto fail; 488 489 error = 0; 490 491 fail: 492 return(error); 493 } 494 495 /******************************************************************************** 496 * Shut the controller down and detach all our resources. 497 */ 498 static int 499 mly_detach(device_t dev) 500 { 501 int error; 502 503 if ((error = mly_shutdown(dev)) != 0) 504 return(error); 505 506 mly_free(device_get_softc(dev)); 507 return(0); 508 } 509 510 /******************************************************************************** 511 * Bring the controller to a state where it can be safely left alone. 512 * 513 * Note that it should not be necessary to wait for any outstanding commands, 514 * as they should be completed prior to calling here. 515 * 516 * XXX this applies for I/O, but not status polls; we should beware of 517 * the case where a status command is running while we detach. 518 */ 519 static int 520 mly_shutdown(device_t dev) 521 { 522 struct mly_softc *sc = device_get_softc(dev); 523 524 debug_called(1); 525 526 if (sc->mly_state & MLY_STATE_OPEN) 527 return(EBUSY); 528 529 /* kill the periodic event */ 530 callout_stop(&sc->mly_periodic); 531 532 /* flush controller */ 533 mly_printf(sc, "flushing cache..."); 534 kprintf("%s\n", mly_flush(sc) ? "failed" : "done"); 535 536 MLY_MASK_INTERRUPTS(sc); 537 538 return(0); 539 } 540 541 /******************************************************************************* 542 * Take an interrupt, or be poked by other code to look for interrupt-worthy 543 * status. 544 */ 545 static void 546 mly_intr(void *arg) 547 { 548 struct mly_softc *sc = (struct mly_softc *)arg; 549 550 debug_called(2); 551 552 mly_done(sc); 553 } 554 555 /******************************************************************************** 556 ******************************************************************************** 557 Bus-dependant Resource Management 558 ******************************************************************************** 559 ********************************************************************************/ 560 561 /******************************************************************************** 562 * Allocate memory for the scatter/gather tables 563 */ 564 static int 565 mly_sg_map(struct mly_softc *sc) 566 { 567 size_t segsize; 568 569 debug_called(1); 570 571 /* 572 * Create a single tag describing a region large enough to hold all of 573 * the s/g lists we will need. 574 */ 575 segsize = sizeof(struct mly_sg_entry) * MLY_MAX_COMMANDS *MLY_MAX_SGENTRIES; 576 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 577 1, 0, /* alignment,boundary */ 578 BUS_SPACE_MAXADDR, /* lowaddr */ 579 BUS_SPACE_MAXADDR, /* highaddr */ 580 segsize, 1, /* maxsize, nsegments */ 581 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 582 BUS_DMA_ALLOCNOW, /* flags */ 583 &sc->mly_sg_dmat)) { 584 mly_printf(sc, "can't allocate scatter/gather DMA tag\n"); 585 return(ENOMEM); 586 } 587 588 /* 589 * Allocate enough s/g maps for all commands and permanently map them into 590 * controller-visible space. 591 * 592 * XXX this assumes we can get enough space for all the s/g maps in one 593 * contiguous slab. 594 */ 595 if (bus_dmamem_alloc(sc->mly_sg_dmat, (void **)&sc->mly_sg_table, 596 BUS_DMA_NOWAIT, &sc->mly_sg_dmamap)) { 597 mly_printf(sc, "can't allocate s/g table\n"); 598 return(ENOMEM); 599 } 600 if (bus_dmamap_load(sc->mly_sg_dmat, sc->mly_sg_dmamap, sc->mly_sg_table, 601 segsize, mly_sg_map_helper, sc, BUS_DMA_NOWAIT) != 0) 602 return (ENOMEM); 603 return(0); 604 } 605 606 /******************************************************************************** 607 * Save the physical address of the base of the s/g table. 608 */ 609 static void 610 mly_sg_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 611 { 612 struct mly_softc *sc = (struct mly_softc *)arg; 613 614 debug_called(1); 615 616 /* save base of s/g table's address in bus space */ 617 sc->mly_sg_busaddr = segs->ds_addr; 618 } 619 620 /******************************************************************************** 621 * Allocate memory for the memory-mailbox interface 622 */ 623 static int 624 mly_mmbox_map(struct mly_softc *sc) 625 { 626 627 /* 628 * Create a DMA tag for a single contiguous region large enough for the 629 * memory mailbox structure. 630 */ 631 if (bus_dma_tag_create(sc->mly_parent_dmat, /* parent */ 632 1, 0, /* alignment,boundary */ 633 BUS_SPACE_MAXADDR, /* lowaddr */ 634 BUS_SPACE_MAXADDR, /* highaddr */ 635 sizeof(struct mly_mmbox), 1, /* maxsize, nsegments */ 636 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 637 BUS_DMA_ALLOCNOW, /* flags */ 638 &sc->mly_mmbox_dmat)) { 639 mly_printf(sc, "can't allocate memory mailbox DMA tag\n"); 640 return(ENOMEM); 641 } 642 643 /* 644 * Allocate the buffer 645 */ 646 if (bus_dmamem_alloc(sc->mly_mmbox_dmat, (void **)&sc->mly_mmbox, BUS_DMA_NOWAIT, &sc->mly_mmbox_dmamap)) { 647 mly_printf(sc, "can't allocate memory mailbox\n"); 648 return(ENOMEM); 649 } 650 if (bus_dmamap_load(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap, sc->mly_mmbox, 651 sizeof(struct mly_mmbox), mly_mmbox_map_helper, sc, 652 BUS_DMA_NOWAIT) != 0) 653 return (ENOMEM); 654 bzero(sc->mly_mmbox, sizeof(*sc->mly_mmbox)); 655 return(0); 656 657 } 658 659 /******************************************************************************** 660 * Save the physical address of the memory mailbox 661 */ 662 static void 663 mly_mmbox_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 664 { 665 struct mly_softc *sc = (struct mly_softc *)arg; 666 667 debug_called(1); 668 669 sc->mly_mmbox_busaddr = segs->ds_addr; 670 } 671 672 /******************************************************************************** 673 * Free all of the resources associated with (sc) 674 * 675 * Should not be called if the controller is active. 676 */ 677 static void 678 mly_free(struct mly_softc *sc) 679 { 680 681 debug_called(1); 682 683 /* Remove the management device */ 684 destroy_dev(sc->mly_dev_t); 685 686 /* detach from CAM */ 687 mly_cam_detach(sc); 688 689 /* release command memory */ 690 mly_release_commands(sc); 691 692 /* throw away the controllerinfo structure */ 693 if (sc->mly_controllerinfo != NULL) 694 kfree(sc->mly_controllerinfo, M_DEVBUF); 695 696 /* throw away the controllerparam structure */ 697 if (sc->mly_controllerparam != NULL) 698 kfree(sc->mly_controllerparam, M_DEVBUF); 699 700 /* destroy data-transfer DMA tag */ 701 if (sc->mly_buffer_dmat) 702 bus_dma_tag_destroy(sc->mly_buffer_dmat); 703 704 /* free and destroy DMA memory and tag for s/g lists */ 705 if (sc->mly_sg_table) { 706 bus_dmamap_unload(sc->mly_sg_dmat, sc->mly_sg_dmamap); 707 bus_dmamem_free(sc->mly_sg_dmat, sc->mly_sg_table, sc->mly_sg_dmamap); 708 } 709 if (sc->mly_sg_dmat) 710 bus_dma_tag_destroy(sc->mly_sg_dmat); 711 712 /* free and destroy DMA memory and tag for memory mailbox */ 713 if (sc->mly_mmbox) { 714 bus_dmamap_unload(sc->mly_mmbox_dmat, sc->mly_mmbox_dmamap); 715 bus_dmamem_free(sc->mly_mmbox_dmat, sc->mly_mmbox, sc->mly_mmbox_dmamap); 716 } 717 if (sc->mly_mmbox_dmat) 718 bus_dma_tag_destroy(sc->mly_mmbox_dmat); 719 720 /* disconnect the interrupt handler */ 721 if (sc->mly_intr) 722 bus_teardown_intr(sc->mly_dev, sc->mly_irq, sc->mly_intr); 723 if (sc->mly_irq != NULL) 724 bus_release_resource(sc->mly_dev, SYS_RES_IRQ, sc->mly_irq_rid, sc->mly_irq); 725 726 /* destroy the parent DMA tag */ 727 if (sc->mly_parent_dmat) 728 bus_dma_tag_destroy(sc->mly_parent_dmat); 729 730 /* release the register window mapping */ 731 if (sc->mly_regs_resource != NULL) 732 bus_release_resource(sc->mly_dev, SYS_RES_MEMORY, sc->mly_regs_rid, sc->mly_regs_resource); 733 } 734 735 /******************************************************************************** 736 ******************************************************************************** 737 Command Wrappers 738 ******************************************************************************** 739 ********************************************************************************/ 740 741 /******************************************************************************** 742 * Fill in the mly_controllerinfo and mly_controllerparam fields in the softc. 743 */ 744 static int 745 mly_get_controllerinfo(struct mly_softc *sc) 746 { 747 struct mly_command_ioctl mci; 748 u_int8_t status; 749 int error; 750 751 debug_called(1); 752 753 if (sc->mly_controllerinfo != NULL) 754 kfree(sc->mly_controllerinfo, M_DEVBUF); 755 756 /* build the getcontrollerinfo ioctl and send it */ 757 bzero(&mci, sizeof(mci)); 758 sc->mly_controllerinfo = NULL; 759 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERINFO; 760 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerinfo, sizeof(*sc->mly_controllerinfo), 761 &status, NULL, NULL))) 762 return(error); 763 if (status != 0) 764 return(EIO); 765 766 if (sc->mly_controllerparam != NULL) 767 kfree(sc->mly_controllerparam, M_DEVBUF); 768 769 /* build the getcontrollerparameter ioctl and send it */ 770 bzero(&mci, sizeof(mci)); 771 sc->mly_controllerparam = NULL; 772 mci.sub_ioctl = MDACIOCTL_GETCONTROLLERPARAMETER; 773 if ((error = mly_ioctl(sc, &mci, (void **)&sc->mly_controllerparam, sizeof(*sc->mly_controllerparam), 774 &status, NULL, NULL))) 775 return(error); 776 if (status != 0) 777 return(EIO); 778 779 return(0); 780 } 781 782 /******************************************************************************** 783 * Schedule all possible devices for a rescan. 784 * 785 */ 786 static void 787 mly_scan_devices(struct mly_softc *sc) 788 { 789 int bus, target; 790 791 debug_called(1); 792 793 /* 794 * Clear any previous BTL information. 795 */ 796 bzero(&sc->mly_btl, sizeof(sc->mly_btl)); 797 798 /* 799 * Mark all devices as requiring a rescan, and let the next 800 * periodic scan collect them. 801 */ 802 for (bus = 0; bus < sc->mly_cam_channels; bus++) 803 if (MLY_BUS_IS_VALID(sc, bus)) 804 for (target = 0; target < MLY_MAX_TARGETS; target++) 805 sc->mly_btl[bus][target].mb_flags = MLY_BTL_RESCAN; 806 807 } 808 809 /******************************************************************************** 810 * Rescan a device, possibly as a consequence of getting an event which suggests 811 * that it may have changed. 812 * 813 * If we suffer resource starvation, we can abandon the rescan as we'll be 814 * retried. 815 */ 816 static void 817 mly_rescan_btl(struct mly_softc *sc, int bus, int target) 818 { 819 struct mly_command *mc; 820 struct mly_command_ioctl *mci; 821 822 debug_called(1); 823 824 /* check that this bus is valid */ 825 if (!MLY_BUS_IS_VALID(sc, bus)) 826 return; 827 828 /* get a command */ 829 if (mly_alloc_command(sc, &mc)) 830 return; 831 832 /* set up the data buffer */ 833 mc->mc_data = kmalloc(sizeof(union mly_devinfo), M_DEVBUF, M_INTWAIT | M_ZERO); 834 mc->mc_flags |= MLY_CMD_DATAIN; 835 mc->mc_complete = mly_complete_rescan; 836 837 /* 838 * Build the ioctl. 839 */ 840 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 841 mci->opcode = MDACMD_IOCTL; 842 mci->addr.phys.controller = 0; 843 mci->timeout.value = 30; 844 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 845 if (MLY_BUS_IS_VIRTUAL(sc, bus)) { 846 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getlogdevinfovalid); 847 mci->sub_ioctl = MDACIOCTL_GETLOGDEVINFOVALID; 848 mci->addr.log.logdev = MLY_LOGDEV_ID(sc, bus, target); 849 debug(1, "logical device %d", mci->addr.log.logdev); 850 } else { 851 mc->mc_length = mci->data_size = sizeof(struct mly_ioctl_getphysdevinfovalid); 852 mci->sub_ioctl = MDACIOCTL_GETPHYSDEVINFOVALID; 853 mci->addr.phys.lun = 0; 854 mci->addr.phys.target = target; 855 mci->addr.phys.channel = bus; 856 debug(1, "physical device %d:%d", mci->addr.phys.channel, mci->addr.phys.target); 857 } 858 859 /* 860 * Dispatch the command. If we successfully send the command, clear the rescan 861 * bit. 862 */ 863 if (mly_start(mc) != 0) { 864 mly_release_command(mc); 865 } else { 866 sc->mly_btl[bus][target].mb_flags &= ~MLY_BTL_RESCAN; /* success */ 867 } 868 } 869 870 /******************************************************************************** 871 * Handle the completion of a rescan operation 872 */ 873 static void 874 mly_complete_rescan(struct mly_command *mc) 875 { 876 struct mly_softc *sc = mc->mc_sc; 877 struct mly_ioctl_getlogdevinfovalid *ldi; 878 struct mly_ioctl_getphysdevinfovalid *pdi; 879 struct mly_command_ioctl *mci; 880 struct mly_btl btl, *btlp; 881 int bus, target, rescan; 882 883 debug_called(1); 884 885 /* 886 * Recover the bus and target from the command. We need these even in 887 * the case where we don't have a useful response. 888 */ 889 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 890 if (mci->sub_ioctl == MDACIOCTL_GETLOGDEVINFOVALID) { 891 bus = MLY_LOGDEV_BUS(sc, mci->addr.log.logdev); 892 target = MLY_LOGDEV_TARGET(sc, mci->addr.log.logdev); 893 } else { 894 bus = mci->addr.phys.channel; 895 target = mci->addr.phys.target; 896 } 897 /* XXX validate bus/target? */ 898 899 /* the default result is 'no device' */ 900 bzero(&btl, sizeof(btl)); 901 902 /* if the rescan completed OK, we have possibly-new BTL data */ 903 if (mc->mc_status == 0) { 904 if (mc->mc_length == sizeof(*ldi)) { 905 ldi = (struct mly_ioctl_getlogdevinfovalid *)mc->mc_data; 906 if ((MLY_LOGDEV_BUS(sc, ldi->logical_device_number) != bus) || 907 (MLY_LOGDEV_TARGET(sc, ldi->logical_device_number) != target)) { 908 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 909 bus, target, MLY_LOGDEV_BUS(sc, ldi->logical_device_number), 910 MLY_LOGDEV_TARGET(sc, ldi->logical_device_number)); 911 /* XXX what can we do about this? */ 912 } 913 btl.mb_flags = MLY_BTL_LOGICAL; 914 btl.mb_type = ldi->raid_level; 915 btl.mb_state = ldi->state; 916 debug(1, "BTL rescan for %d returns %s, %s", ldi->logical_device_number, 917 mly_describe_code(mly_table_device_type, ldi->raid_level), 918 mly_describe_code(mly_table_device_state, ldi->state)); 919 } else if (mc->mc_length == sizeof(*pdi)) { 920 pdi = (struct mly_ioctl_getphysdevinfovalid *)mc->mc_data; 921 if ((pdi->channel != bus) || (pdi->target != target)) { 922 mly_printf(sc, "WARNING: BTL rescan for %d:%d returned data for %d:%d instead\n", 923 bus, target, pdi->channel, pdi->target); 924 /* XXX what can we do about this? */ 925 } 926 btl.mb_flags = MLY_BTL_PHYSICAL; 927 btl.mb_type = MLY_DEVICE_TYPE_PHYSICAL; 928 btl.mb_state = pdi->state; 929 btl.mb_speed = pdi->speed; 930 btl.mb_width = pdi->width; 931 if (pdi->state != MLY_DEVICE_STATE_UNCONFIGURED) 932 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_PROTECTED; 933 debug(1, "BTL rescan for %d:%d returns %s", bus, target, 934 mly_describe_code(mly_table_device_state, pdi->state)); 935 } else { 936 mly_printf(sc, "BTL rescan result invalid\n"); 937 } 938 } 939 940 kfree(mc->mc_data, M_DEVBUF); 941 mly_release_command(mc); 942 943 /* 944 * Decide whether we need to rescan the device. 945 */ 946 rescan = 0; 947 948 /* device type changes (usually between 'nothing' and 'something') */ 949 btlp = &sc->mly_btl[bus][target]; 950 if (btl.mb_flags != btlp->mb_flags) { 951 debug(1, "flags changed, rescanning"); 952 rescan = 1; 953 } 954 955 /* XXX other reasons? */ 956 957 /* 958 * Update BTL information. 959 */ 960 *btlp = btl; 961 962 /* 963 * Perform CAM rescan if required. 964 */ 965 if (rescan) 966 mly_cam_rescan_btl(sc, bus, target); 967 } 968 969 /******************************************************************************** 970 * Get the current health status and set the 'next event' counter to suit. 971 */ 972 static int 973 mly_get_eventstatus(struct mly_softc *sc) 974 { 975 struct mly_command_ioctl mci; 976 struct mly_health_status *mh; 977 u_int8_t status; 978 int error; 979 980 /* build the gethealthstatus ioctl and send it */ 981 bzero(&mci, sizeof(mci)); 982 mh = NULL; 983 mci.sub_ioctl = MDACIOCTL_GETHEALTHSTATUS; 984 985 if ((error = mly_ioctl(sc, &mci, (void **)&mh, sizeof(*mh), &status, NULL, NULL))) 986 return(error); 987 if (status != 0) 988 return(EIO); 989 990 /* get the event counter */ 991 sc->mly_event_change = mh->change_counter; 992 sc->mly_event_waiting = mh->next_event; 993 sc->mly_event_counter = mh->next_event; 994 995 /* save the health status into the memory mailbox */ 996 bcopy(mh, &sc->mly_mmbox->mmm_health.status, sizeof(*mh)); 997 998 debug(1, "initial change counter %d, event counter %d", mh->change_counter, mh->next_event); 999 1000 kfree(mh, M_DEVBUF); 1001 return(0); 1002 } 1003 1004 /******************************************************************************** 1005 * Enable the memory mailbox mode. 1006 */ 1007 static int 1008 mly_enable_mmbox(struct mly_softc *sc) 1009 { 1010 struct mly_command_ioctl mci; 1011 u_int8_t *sp, status; 1012 int error; 1013 1014 debug_called(1); 1015 1016 /* build the ioctl and send it */ 1017 bzero(&mci, sizeof(mci)); 1018 mci.sub_ioctl = MDACIOCTL_SETMEMORYMAILBOX; 1019 /* set buffer addresses */ 1020 mci.param.setmemorymailbox.command_mailbox_physaddr = 1021 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_command); 1022 mci.param.setmemorymailbox.status_mailbox_physaddr = 1023 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_status); 1024 mci.param.setmemorymailbox.health_buffer_physaddr = 1025 sc->mly_mmbox_busaddr + offsetof(struct mly_mmbox, mmm_health); 1026 1027 /* set buffer sizes - abuse of data_size field is revolting */ 1028 sp = (u_int8_t *)&mci.data_size; 1029 sp[0] = ((sizeof(union mly_command_packet) * MLY_MMBOX_COMMANDS) / 1024); 1030 sp[1] = (sizeof(union mly_status_packet) * MLY_MMBOX_STATUS) / 1024; 1031 mci.param.setmemorymailbox.health_buffer_size = sizeof(union mly_health_region) / 1024; 1032 1033 debug(1, "memory mailbox at %p (0x%llx/%d 0x%llx/%d 0x%llx/%d", sc->mly_mmbox, 1034 mci.param.setmemorymailbox.command_mailbox_physaddr, sp[0], 1035 mci.param.setmemorymailbox.status_mailbox_physaddr, sp[1], 1036 mci.param.setmemorymailbox.health_buffer_physaddr, 1037 mci.param.setmemorymailbox.health_buffer_size); 1038 1039 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1040 return(error); 1041 if (status != 0) 1042 return(EIO); 1043 sc->mly_state |= MLY_STATE_MMBOX_ACTIVE; 1044 debug(1, "memory mailbox active"); 1045 return(0); 1046 } 1047 1048 /******************************************************************************** 1049 * Flush all pending I/O from the controller. 1050 */ 1051 static int 1052 mly_flush(struct mly_softc *sc) 1053 { 1054 struct mly_command_ioctl mci; 1055 u_int8_t status; 1056 int error; 1057 1058 debug_called(1); 1059 1060 /* build the ioctl */ 1061 bzero(&mci, sizeof(mci)); 1062 mci.sub_ioctl = MDACIOCTL_FLUSHDEVICEDATA; 1063 mci.param.deviceoperation.operation_device = MLY_OPDEVICE_PHYSICAL_CONTROLLER; 1064 1065 /* pass it off to the controller */ 1066 if ((error = mly_ioctl(sc, &mci, NULL, 0, &status, NULL, NULL))) 1067 return(error); 1068 1069 return((status == 0) ? 0 : EIO); 1070 } 1071 1072 /******************************************************************************** 1073 * Perform an ioctl command. 1074 * 1075 * If (data) is not NULL, the command requires data transfer. If (*data) is NULL 1076 * the command requires data transfer from the controller, and we will allocate 1077 * a buffer for it. If (*data) is not NULL, the command requires data transfer 1078 * to the controller. 1079 * 1080 * XXX passing in the whole ioctl structure is ugly. Better ideas? 1081 * 1082 * XXX we don't even try to handle the case where datasize > 4k. We should. 1083 */ 1084 static int 1085 mly_ioctl(struct mly_softc *sc, struct mly_command_ioctl *ioctl, void **data, size_t datasize, 1086 u_int8_t *status, void *sense_buffer, size_t *sense_length) 1087 { 1088 struct mly_command *mc; 1089 struct mly_command_ioctl *mci; 1090 int error; 1091 1092 debug_called(1); 1093 1094 mc = NULL; 1095 if (mly_alloc_command(sc, &mc)) { 1096 error = ENOMEM; 1097 goto out; 1098 } 1099 1100 /* copy the ioctl structure, but save some important fields and then fixup */ 1101 mci = &mc->mc_packet->ioctl; 1102 ioctl->sense_buffer_address = mci->sense_buffer_address; 1103 ioctl->maximum_sense_size = mci->maximum_sense_size; 1104 *mci = *ioctl; 1105 mci->opcode = MDACMD_IOCTL; 1106 mci->timeout.value = 30; 1107 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1108 1109 /* handle the data buffer */ 1110 if (data != NULL) { 1111 if (*data == NULL) { 1112 /* allocate data buffer */ 1113 mc->mc_data = kmalloc(datasize, M_DEVBUF, M_INTWAIT); 1114 mc->mc_flags |= MLY_CMD_DATAIN; 1115 } else { 1116 mc->mc_data = *data; 1117 mc->mc_flags |= MLY_CMD_DATAOUT; 1118 } 1119 mc->mc_length = datasize; 1120 mc->mc_packet->generic.data_size = datasize; 1121 } 1122 1123 /* run the command */ 1124 if ((error = mly_immediate_command(mc))) 1125 goto out; 1126 1127 /* clean up and return any data */ 1128 *status = mc->mc_status; 1129 if ((mc->mc_sense > 0) && (sense_buffer != NULL)) { 1130 bcopy(mc->mc_packet, sense_buffer, mc->mc_sense); 1131 *sense_length = mc->mc_sense; 1132 goto out; 1133 } 1134 1135 /* should we return a data pointer? */ 1136 if ((data != NULL) && (*data == NULL)) 1137 *data = mc->mc_data; 1138 1139 /* command completed OK */ 1140 error = 0; 1141 1142 out: 1143 if (mc != NULL) { 1144 /* do we need to free a data buffer we allocated? */ 1145 if (error && (mc->mc_data != NULL) && (*data == NULL)) 1146 kfree(mc->mc_data, M_DEVBUF); 1147 mly_release_command(mc); 1148 } 1149 return(error); 1150 } 1151 1152 /******************************************************************************** 1153 * Check for event(s) outstanding in the controller. 1154 */ 1155 static void 1156 mly_check_event(struct mly_softc *sc) 1157 { 1158 1159 /* 1160 * The controller may have updated the health status information, 1161 * so check for it here. Note that the counters are all in host memory, 1162 * so this check is very cheap. Also note that we depend on checking on 1163 * completion 1164 */ 1165 if (sc->mly_mmbox->mmm_health.status.change_counter != sc->mly_event_change) { 1166 sc->mly_event_change = sc->mly_mmbox->mmm_health.status.change_counter; 1167 debug(1, "event change %d, event status update, %d -> %d", sc->mly_event_change, 1168 sc->mly_event_waiting, sc->mly_mmbox->mmm_health.status.next_event); 1169 sc->mly_event_waiting = sc->mly_mmbox->mmm_health.status.next_event; 1170 1171 /* wake up anyone that might be interested in this */ 1172 wakeup(&sc->mly_event_change); 1173 } 1174 if (sc->mly_event_counter != sc->mly_event_waiting) 1175 mly_fetch_event(sc); 1176 } 1177 1178 /******************************************************************************** 1179 * Fetch one event from the controller. 1180 * 1181 * If we fail due to resource starvation, we'll be retried the next time a 1182 * command completes. 1183 */ 1184 static void 1185 mly_fetch_event(struct mly_softc *sc) 1186 { 1187 struct mly_command *mc; 1188 struct mly_command_ioctl *mci; 1189 u_int32_t event; 1190 1191 debug_called(1); 1192 1193 /* get a command */ 1194 if (mly_alloc_command(sc, &mc)) 1195 return; 1196 1197 /* set up the data buffer */ 1198 mc->mc_data = kmalloc(sizeof(struct mly_event), M_DEVBUF, M_INTWAIT|M_ZERO); 1199 mc->mc_length = sizeof(struct mly_event); 1200 mc->mc_flags |= MLY_CMD_DATAIN; 1201 mc->mc_complete = mly_complete_event; 1202 1203 /* 1204 * Get an event number to fetch. It's possible that we've raced with another 1205 * context for the last event, in which case there will be no more events. 1206 */ 1207 crit_enter(); 1208 if (sc->mly_event_counter == sc->mly_event_waiting) { 1209 mly_release_command(mc); 1210 crit_exit(); 1211 return; 1212 } 1213 event = sc->mly_event_counter++; 1214 crit_exit(); 1215 1216 /* 1217 * Build the ioctl. 1218 * 1219 * At this point we are committed to sending this request, as it 1220 * will be the only one constructed for this particular event number. 1221 */ 1222 mci = (struct mly_command_ioctl *)&mc->mc_packet->ioctl; 1223 mci->opcode = MDACMD_IOCTL; 1224 mci->data_size = sizeof(struct mly_event); 1225 mci->addr.phys.lun = (event >> 16) & 0xff; 1226 mci->addr.phys.target = (event >> 24) & 0xff; 1227 mci->addr.phys.channel = 0; 1228 mci->addr.phys.controller = 0; 1229 mci->timeout.value = 30; 1230 mci->timeout.scale = MLY_TIMEOUT_SECONDS; 1231 mci->sub_ioctl = MDACIOCTL_GETEVENT; 1232 mci->param.getevent.sequence_number_low = event & 0xffff; 1233 1234 debug(1, "fetch event %u", event); 1235 1236 /* 1237 * Submit the command. 1238 * 1239 * Note that failure of mly_start() will result in this event never being 1240 * fetched. 1241 */ 1242 if (mly_start(mc) != 0) { 1243 mly_printf(sc, "couldn't fetch event %u\n", event); 1244 mly_release_command(mc); 1245 } 1246 } 1247 1248 /******************************************************************************** 1249 * Handle the completion of an event poll. 1250 */ 1251 static void 1252 mly_complete_event(struct mly_command *mc) 1253 { 1254 struct mly_softc *sc = mc->mc_sc; 1255 struct mly_event *me = (struct mly_event *)mc->mc_data; 1256 1257 debug_called(1); 1258 1259 /* 1260 * If the event was successfully fetched, process it. 1261 */ 1262 if (mc->mc_status == SCSI_STATUS_OK) { 1263 mly_process_event(sc, me); 1264 kfree(me, M_DEVBUF); 1265 } 1266 mly_release_command(mc); 1267 1268 /* 1269 * Check for another event. 1270 */ 1271 mly_check_event(sc); 1272 } 1273 1274 /******************************************************************************** 1275 * Process a controller event. 1276 */ 1277 static void 1278 mly_process_event(struct mly_softc *sc, struct mly_event *me) 1279 { 1280 struct scsi_sense_data *ssd = (struct scsi_sense_data *)&me->sense[0]; 1281 char *fp, *tp; 1282 int bus, target, event, class, action; 1283 char hexstr[2][12]; 1284 /* 1285 * Errors can be reported using vendor-unique sense data. In this case, the 1286 * event code will be 0x1c (Request sense data present), the sense key will 1287 * be 0x09 (vendor specific), the MSB of the ASC will be set, and the 1288 * actual event code will be a 16-bit value comprised of the ASCQ (low byte) 1289 * and low seven bits of the ASC (low seven bits of the high byte). 1290 */ 1291 if ((me->code == 0x1c) && 1292 ((ssd->flags & SSD_KEY) == SSD_KEY_Vendor_Specific) && 1293 (ssd->add_sense_code & 0x80)) { 1294 event = ((int)(ssd->add_sense_code & ~0x80) << 8) + ssd->add_sense_code_qual; 1295 } else { 1296 event = me->code; 1297 } 1298 1299 /* look up event, get codes */ 1300 fp = mly_describe_code(mly_table_event, event); 1301 1302 debug(1, "Event %d code 0x%x", me->sequence_number, me->code); 1303 1304 /* quiet event? */ 1305 class = fp[0]; 1306 if (isupper(class) && bootverbose) 1307 class = tolower(class); 1308 1309 /* get action code, text string */ 1310 action = fp[1]; 1311 tp = &fp[2]; 1312 1313 /* 1314 * Print some information about the event. 1315 * 1316 * This code uses a table derived from the corresponding portion of the Linux 1317 * driver, and thus the parser is very similar. 1318 */ 1319 switch(class) { 1320 case 'p': /* error on physical device */ 1321 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1322 if (action == 'r') 1323 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1324 break; 1325 case 'l': /* error on logical unit */ 1326 case 'm': /* message about logical unit */ 1327 bus = MLY_LOGDEV_BUS(sc, me->lun); 1328 target = MLY_LOGDEV_TARGET(sc, me->lun); 1329 mly_name_device(sc, bus, target); 1330 mly_printf(sc, "logical device %d (%s) %s\n", me->lun, sc->mly_btl[bus][target].mb_name, tp); 1331 if (action == 'r') 1332 sc->mly_btl[bus][target].mb_flags |= MLY_BTL_RESCAN; 1333 break; 1334 case 's': /* report of sense data */ 1335 if (((ssd->flags & SSD_KEY) == SSD_KEY_NO_SENSE) || 1336 (((ssd->flags & SSD_KEY) == SSD_KEY_NOT_READY) && 1337 (ssd->add_sense_code == 0x04) && 1338 ((ssd->add_sense_code_qual == 0x01) || (ssd->add_sense_code_qual == 0x02)))) 1339 break; /* ignore NO_SENSE or NOT_READY in one case */ 1340 1341 mly_printf(sc, "physical device %d:%d %s\n", me->channel, me->target, tp); 1342 mly_printf(sc, " sense key %d asc %02x ascq %02x\n", 1343 ssd->flags & SSD_KEY, ssd->add_sense_code, ssd->add_sense_code_qual); 1344 mly_printf(sc, " info %s csi %s\n", hexncpy(ssd->info, 4, hexstr[0], 12, NULL), 1345 hexncpy(ssd->cmd_spec_info, 4, hexstr[1], 12, NULL)); 1346 if (action == 'r') 1347 sc->mly_btl[me->channel][me->target].mb_flags |= MLY_BTL_RESCAN; 1348 break; 1349 case 'e': 1350 mly_printf(sc, tp, me->target, me->lun); 1351 kprintf("\n"); 1352 break; 1353 case 'c': 1354 mly_printf(sc, "controller %s\n", tp); 1355 break; 1356 case '?': 1357 mly_printf(sc, "%s - %d\n", tp, me->code); 1358 break; 1359 default: /* probably a 'noisy' event being ignored */ 1360 break; 1361 } 1362 } 1363 1364 /******************************************************************************** 1365 * Perform periodic activities. 1366 */ 1367 static void 1368 mly_periodic(void *data) 1369 { 1370 struct mly_softc *sc = (struct mly_softc *)data; 1371 int bus, target; 1372 1373 debug_called(2); 1374 1375 /* 1376 * Scan devices. 1377 */ 1378 for (bus = 0; bus < sc->mly_cam_channels; bus++) { 1379 if (MLY_BUS_IS_VALID(sc, bus)) { 1380 for (target = 0; target < MLY_MAX_TARGETS; target++) { 1381 1382 /* ignore the controller in this scan */ 1383 if (target == sc->mly_controllerparam->initiator_id) 1384 continue; 1385 1386 /* perform device rescan? */ 1387 if (sc->mly_btl[bus][target].mb_flags & MLY_BTL_RESCAN) 1388 mly_rescan_btl(sc, bus, target); 1389 } 1390 } 1391 } 1392 1393 /* check for controller events */ 1394 mly_check_event(sc); 1395 1396 /* reschedule ourselves */ 1397 callout_reset(&sc->mly_periodic, MLY_PERIODIC_INTERVAL * hz, mly_periodic, sc); 1398 } 1399 1400 /******************************************************************************** 1401 ******************************************************************************** 1402 Command Processing 1403 ******************************************************************************** 1404 ********************************************************************************/ 1405 1406 /******************************************************************************** 1407 * Run a command and wait for it to complete. 1408 * 1409 */ 1410 static int 1411 mly_immediate_command(struct mly_command *mc) 1412 { 1413 struct mly_softc *sc = mc->mc_sc; 1414 int error; 1415 1416 debug_called(1); 1417 1418 /* spinning at splcam is ugly, but we're only used during controller init */ 1419 crit_enter(); 1420 if ((error = mly_start(mc))) { 1421 crit_exit(); 1422 return(error); 1423 } 1424 1425 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) { 1426 /* sleep on the command */ 1427 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1428 tsleep(mc, 0, "mlywait", 0); 1429 } 1430 } else { 1431 /* spin and collect status while we do */ 1432 while(!(mc->mc_flags & MLY_CMD_COMPLETE)) { 1433 mly_done(mc->mc_sc); 1434 } 1435 } 1436 crit_exit(); 1437 return(0); 1438 } 1439 1440 /******************************************************************************** 1441 * Deliver a command to the controller. 1442 * 1443 * XXX it would be good to just queue commands that we can't submit immediately 1444 * and send them later, but we probably want a wrapper for that so that 1445 * we don't hang on a failed submission for an immediate command. 1446 */ 1447 static int 1448 mly_start(struct mly_command *mc) 1449 { 1450 struct mly_softc *sc = mc->mc_sc; 1451 union mly_command_packet *pkt; 1452 1453 debug_called(2); 1454 1455 /* 1456 * Set the command up for delivery to the controller. 1457 */ 1458 mly_map_command(mc); 1459 mc->mc_packet->generic.command_id = mc->mc_slot; 1460 1461 #ifdef MLY_DEBUG 1462 mc->mc_timestamp = time_uptime; 1463 #endif 1464 1465 crit_enter(); 1466 1467 /* 1468 * Do we have to use the hardware mailbox? 1469 */ 1470 if (!(sc->mly_state & MLY_STATE_MMBOX_ACTIVE)) { 1471 /* 1472 * Check to see if the controller is ready for us. 1473 */ 1474 if (MLY_IDBR_TRUE(sc, MLY_HM_CMDSENT)) { 1475 crit_exit(); 1476 return(EBUSY); 1477 } 1478 mc->mc_flags |= MLY_CMD_BUSY; 1479 1480 /* 1481 * It's ready, send the command. 1482 */ 1483 MLY_SET_MBOX(sc, sc->mly_command_mailbox, &mc->mc_packetphys); 1484 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_CMDSENT); 1485 1486 } else { /* use memory-mailbox mode */ 1487 1488 pkt = &sc->mly_mmbox->mmm_command[sc->mly_mmbox_command_index]; 1489 1490 /* check to see if the next index is free yet */ 1491 if (pkt->mmbox.flag != 0) { 1492 crit_exit(); 1493 return(EBUSY); 1494 } 1495 mc->mc_flags |= MLY_CMD_BUSY; 1496 1497 /* copy in new command */ 1498 bcopy(mc->mc_packet->mmbox.data, pkt->mmbox.data, sizeof(pkt->mmbox.data)); 1499 /* barrier to ensure completion of previous write before we write the flag */ 1500 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1501 BUS_SPACE_BARRIER_WRITE); 1502 /* copy flag last */ 1503 pkt->mmbox.flag = mc->mc_packet->mmbox.flag; 1504 /* barrier to ensure completion of previous write before we notify the controller */ 1505 bus_space_barrier(sc->mly_btag, sc->mly_bhandle, 0, 0, 1506 BUS_SPACE_BARRIER_WRITE); 1507 1508 /* signal controller, update index */ 1509 MLY_SET_REG(sc, sc->mly_idbr, MLY_AM_CMDSENT); 1510 sc->mly_mmbox_command_index = (sc->mly_mmbox_command_index + 1) % MLY_MMBOX_COMMANDS; 1511 } 1512 1513 mly_enqueue_busy(mc); 1514 crit_exit(); 1515 return(0); 1516 } 1517 1518 /******************************************************************************** 1519 * Pick up command status from the controller, schedule a completion event 1520 */ 1521 static void 1522 mly_done(struct mly_softc *sc) 1523 { 1524 struct mly_command *mc; 1525 union mly_status_packet *sp; 1526 u_int16_t slot; 1527 int worked; 1528 1529 crit_enter(); 1530 worked = 0; 1531 1532 /* pick up hardware-mailbox commands */ 1533 if (MLY_ODBR_TRUE(sc, MLY_HM_STSREADY)) { 1534 slot = MLY_GET_REG2(sc, sc->mly_status_mailbox); 1535 if (slot < MLY_SLOT_MAX) { 1536 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1537 mc->mc_status = MLY_GET_REG(sc, sc->mly_status_mailbox + 2); 1538 mc->mc_sense = MLY_GET_REG(sc, sc->mly_status_mailbox + 3); 1539 mc->mc_resid = MLY_GET_REG4(sc, sc->mly_status_mailbox + 4); 1540 mly_remove_busy(mc); 1541 mc->mc_flags &= ~MLY_CMD_BUSY; 1542 mly_enqueue_complete(mc); 1543 worked = 1; 1544 } else { 1545 /* slot 0xffff may mean "extremely bogus command" */ 1546 mly_printf(sc, "got HM completion for illegal slot %u\n", slot); 1547 } 1548 /* unconditionally acknowledge status */ 1549 MLY_SET_REG(sc, sc->mly_odbr, MLY_HM_STSREADY); 1550 MLY_SET_REG(sc, sc->mly_idbr, MLY_HM_STSACK); 1551 } 1552 1553 /* pick up memory-mailbox commands */ 1554 if (MLY_ODBR_TRUE(sc, MLY_AM_STSREADY)) { 1555 for (;;) { 1556 sp = &sc->mly_mmbox->mmm_status[sc->mly_mmbox_status_index]; 1557 1558 /* check for more status */ 1559 if (sp->mmbox.flag == 0) 1560 break; 1561 1562 /* get slot number */ 1563 slot = sp->status.command_id; 1564 if (slot < MLY_SLOT_MAX) { 1565 mc = &sc->mly_command[slot - MLY_SLOT_START]; 1566 mc->mc_status = sp->status.status; 1567 mc->mc_sense = sp->status.sense_length; 1568 mc->mc_resid = sp->status.residue; 1569 mly_remove_busy(mc); 1570 mc->mc_flags &= ~MLY_CMD_BUSY; 1571 mly_enqueue_complete(mc); 1572 worked = 1; 1573 } else { 1574 /* slot 0xffff may mean "extremely bogus command" */ 1575 mly_printf(sc, "got AM completion for illegal slot %u at %d\n", 1576 slot, sc->mly_mmbox_status_index); 1577 } 1578 1579 /* clear and move to next index */ 1580 sp->mmbox.flag = 0; 1581 sc->mly_mmbox_status_index = (sc->mly_mmbox_status_index + 1) % MLY_MMBOX_STATUS; 1582 } 1583 /* acknowledge that we have collected status value(s) */ 1584 MLY_SET_REG(sc, sc->mly_odbr, MLY_AM_STSREADY); 1585 } 1586 1587 crit_exit(); 1588 if (worked) { 1589 if (sc->mly_state & MLY_STATE_INTERRUPTS_ON) 1590 taskqueue_enqueue(taskqueue_swi, &sc->mly_task_complete); 1591 else 1592 mly_complete(sc, 0); 1593 } 1594 } 1595 1596 /******************************************************************************** 1597 * Process completed commands 1598 */ 1599 static void 1600 mly_complete(void *context, int pending) 1601 { 1602 struct mly_softc *sc = (struct mly_softc *)context; 1603 struct mly_command *mc; 1604 void (* mc_complete)(struct mly_command *mc); 1605 1606 1607 debug_called(2); 1608 1609 /* 1610 * Spin pulling commands off the completed queue and processing them. 1611 */ 1612 while ((mc = mly_dequeue_complete(sc)) != NULL) { 1613 1614 /* 1615 * Free controller resources, mark command complete. 1616 * 1617 * Note that as soon as we mark the command complete, it may be freed 1618 * out from under us, so we need to save the mc_complete field in 1619 * order to later avoid dereferencing mc. (We would not expect to 1620 * have a polling/sleeping consumer with mc_complete != NULL). 1621 */ 1622 mly_unmap_command(mc); 1623 mc_complete = mc->mc_complete; 1624 mc->mc_flags |= MLY_CMD_COMPLETE; 1625 1626 /* 1627 * Call completion handler or wake up sleeping consumer. 1628 */ 1629 if (mc_complete != NULL) { 1630 mc_complete(mc); 1631 } else { 1632 wakeup(mc); 1633 } 1634 } 1635 1636 /* 1637 * XXX if we are deferring commands due to controller-busy status, we should 1638 * retry submitting them here. 1639 */ 1640 } 1641 1642 /******************************************************************************** 1643 ******************************************************************************** 1644 Command Buffer Management 1645 ******************************************************************************** 1646 ********************************************************************************/ 1647 1648 /******************************************************************************** 1649 * Allocate a command. 1650 */ 1651 static int 1652 mly_alloc_command(struct mly_softc *sc, struct mly_command **mcp) 1653 { 1654 struct mly_command *mc; 1655 1656 debug_called(3); 1657 1658 if ((mc = mly_dequeue_free(sc)) == NULL) { 1659 *mcp = NULL; /* avoid gcc warning */ 1660 return(ENOMEM); 1661 } 1662 1663 *mcp = mc; 1664 return(0); 1665 } 1666 1667 /******************************************************************************** 1668 * Release a command back to the freelist. 1669 */ 1670 static void 1671 mly_release_command(struct mly_command *mc) 1672 { 1673 debug_called(3); 1674 1675 /* 1676 * Fill in parts of the command that may cause confusion if 1677 * a consumer doesn't when we are later allocated. 1678 */ 1679 mc->mc_data = NULL; 1680 mc->mc_flags = 0; 1681 mc->mc_complete = NULL; 1682 mc->mc_private = NULL; 1683 1684 /* 1685 * By default, we set up to overwrite the command packet with 1686 * sense information. 1687 */ 1688 mc->mc_packet->generic.sense_buffer_address = mc->mc_packetphys; 1689 mc->mc_packet->generic.maximum_sense_size = sizeof(union mly_command_packet); 1690 1691 mly_enqueue_free(mc); 1692 } 1693 1694 /******************************************************************************** 1695 * Map helper for command allocation. 1696 */ 1697 static void 1698 mly_alloc_commands_map(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1699 { 1700 struct mly_softc *sc = (struct mly_softc *)arg; 1701 1702 debug_called(1); 1703 1704 sc->mly_packetphys = segs[0].ds_addr; 1705 } 1706 1707 /******************************************************************************** 1708 * Allocate and initialise command and packet structures. 1709 * 1710 * If the controller supports fewer than MLY_MAX_COMMANDS commands, limit our 1711 * allocation to that number. If we don't yet know how many commands the 1712 * controller supports, allocate a very small set (suitable for initialisation 1713 * purposes only). 1714 */ 1715 static int 1716 mly_alloc_commands(struct mly_softc *sc) 1717 { 1718 struct mly_command *mc; 1719 int i, ncmd; 1720 1721 if (sc->mly_controllerinfo == NULL) { 1722 ncmd = 4; 1723 } else { 1724 ncmd = min(MLY_MAX_COMMANDS, sc->mly_controllerinfo->maximum_parallel_commands); 1725 } 1726 1727 /* 1728 * Allocate enough space for all the command packets in one chunk and 1729 * map them permanently into controller-visible space. 1730 */ 1731 if (bus_dmamem_alloc(sc->mly_packet_dmat, (void **)&sc->mly_packet, 1732 BUS_DMA_NOWAIT, &sc->mly_packetmap)) { 1733 return(ENOMEM); 1734 } 1735 if (bus_dmamap_load(sc->mly_packet_dmat, sc->mly_packetmap, sc->mly_packet, 1736 ncmd * sizeof(union mly_command_packet), 1737 mly_alloc_commands_map, sc, BUS_DMA_NOWAIT) != 0) 1738 return (ENOMEM); 1739 1740 for (i = 0; i < ncmd; i++) { 1741 mc = &sc->mly_command[i]; 1742 bzero(mc, sizeof(*mc)); 1743 mc->mc_sc = sc; 1744 mc->mc_slot = MLY_SLOT_START + i; 1745 mc->mc_packet = sc->mly_packet + i; 1746 mc->mc_packetphys = sc->mly_packetphys + (i * sizeof(union mly_command_packet)); 1747 if (!bus_dmamap_create(sc->mly_buffer_dmat, 0, &mc->mc_datamap)) 1748 mly_release_command(mc); 1749 } 1750 return(0); 1751 } 1752 1753 /******************************************************************************** 1754 * Free all the storage held by commands. 1755 * 1756 * Must be called with all commands on the free list. 1757 */ 1758 static void 1759 mly_release_commands(struct mly_softc *sc) 1760 { 1761 struct mly_command *mc; 1762 1763 /* throw away command buffer DMA maps */ 1764 while (mly_alloc_command(sc, &mc) == 0) 1765 bus_dmamap_destroy(sc->mly_buffer_dmat, mc->mc_datamap); 1766 1767 /* release the packet storage */ 1768 if (sc->mly_packet != NULL) { 1769 bus_dmamap_unload(sc->mly_packet_dmat, sc->mly_packetmap); 1770 bus_dmamem_free(sc->mly_packet_dmat, sc->mly_packet, sc->mly_packetmap); 1771 sc->mly_packet = NULL; 1772 } 1773 } 1774 1775 1776 /******************************************************************************** 1777 * Command-mapping helper function - populate this command's s/g table 1778 * with the s/g entries for its data. 1779 */ 1780 static void 1781 mly_map_command_sg(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1782 { 1783 struct mly_command *mc = (struct mly_command *)arg; 1784 struct mly_softc *sc = mc->mc_sc; 1785 struct mly_command_generic *gen = &(mc->mc_packet->generic); 1786 struct mly_sg_entry *sg; 1787 int i, tabofs; 1788 1789 debug_called(2); 1790 1791 /* can we use the transfer structure directly? */ 1792 if (nseg <= 2) { 1793 sg = &gen->transfer.direct.sg[0]; 1794 gen->command_control.extended_sg_table = 0; 1795 } else { 1796 tabofs = ((mc->mc_slot - MLY_SLOT_START) * MLY_MAX_SGENTRIES); 1797 sg = sc->mly_sg_table + tabofs; 1798 gen->transfer.indirect.entries[0] = nseg; 1799 gen->transfer.indirect.table_physaddr[0] = sc->mly_sg_busaddr + (tabofs * sizeof(struct mly_sg_entry)); 1800 gen->command_control.extended_sg_table = 1; 1801 } 1802 1803 /* copy the s/g table */ 1804 for (i = 0; i < nseg; i++) { 1805 sg[i].physaddr = segs[i].ds_addr; 1806 sg[i].length = segs[i].ds_len; 1807 } 1808 1809 } 1810 1811 #if 0 1812 /******************************************************************************** 1813 * Command-mapping helper function - save the cdb's physical address. 1814 * 1815 * We don't support 'large' SCSI commands at this time, so this is unused. 1816 */ 1817 static void 1818 mly_map_command_cdb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1819 { 1820 struct mly_command *mc = (struct mly_command *)arg; 1821 1822 debug_called(2); 1823 1824 /* XXX can we safely assume that a CDB will never cross a page boundary? */ 1825 if ((segs[0].ds_addr % PAGE_SIZE) > 1826 ((segs[0].ds_addr + mc->mc_packet->scsi_large.cdb_length) % PAGE_SIZE)) 1827 panic("cdb crosses page boundary"); 1828 1829 /* fix up fields in the command packet */ 1830 mc->mc_packet->scsi_large.cdb_physaddr = segs[0].ds_addr; 1831 } 1832 #endif 1833 1834 /******************************************************************************** 1835 * Map a command into controller-visible space 1836 */ 1837 static void 1838 mly_map_command(struct mly_command *mc) 1839 { 1840 struct mly_softc *sc = mc->mc_sc; 1841 1842 debug_called(2); 1843 1844 /* don't map more than once */ 1845 if (mc->mc_flags & MLY_CMD_MAPPED) 1846 return; 1847 1848 /* does the command have a data buffer? */ 1849 if (mc->mc_data != NULL) { 1850 bus_dmamap_load(sc->mly_buffer_dmat, mc->mc_datamap, mc->mc_data, mc->mc_length, 1851 mly_map_command_sg, mc, 0); 1852 1853 if (mc->mc_flags & MLY_CMD_DATAIN) 1854 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREREAD); 1855 if (mc->mc_flags & MLY_CMD_DATAOUT) 1856 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_PREWRITE); 1857 } 1858 mc->mc_flags |= MLY_CMD_MAPPED; 1859 } 1860 1861 /******************************************************************************** 1862 * Unmap a command from controller-visible space 1863 */ 1864 static void 1865 mly_unmap_command(struct mly_command *mc) 1866 { 1867 struct mly_softc *sc = mc->mc_sc; 1868 1869 debug_called(2); 1870 1871 if (!(mc->mc_flags & MLY_CMD_MAPPED)) 1872 return; 1873 1874 /* does the command have a data buffer? */ 1875 if (mc->mc_data != NULL) { 1876 if (mc->mc_flags & MLY_CMD_DATAIN) 1877 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTREAD); 1878 if (mc->mc_flags & MLY_CMD_DATAOUT) 1879 bus_dmamap_sync(sc->mly_buffer_dmat, mc->mc_datamap, BUS_DMASYNC_POSTWRITE); 1880 1881 bus_dmamap_unload(sc->mly_buffer_dmat, mc->mc_datamap); 1882 } 1883 mc->mc_flags &= ~MLY_CMD_MAPPED; 1884 } 1885 1886 1887 /******************************************************************************** 1888 ******************************************************************************** 1889 CAM interface 1890 ******************************************************************************** 1891 ********************************************************************************/ 1892 1893 /******************************************************************************** 1894 * Attach the physical and virtual SCSI busses to CAM. 1895 * 1896 * Physical bus numbering starts from 0, virtual bus numbering from one greater 1897 * than the highest physical bus. Physical busses are only registered if 1898 * the kernel environment variable "hw.mly.register_physical_channels" is set. 1899 * 1900 * When we refer to a "bus", we are referring to the bus number registered with 1901 * the SIM, wheras a "channel" is a channel number given to the adapter. In order 1902 * to keep things simple, we map these 1:1, so "bus" and "channel" may be used 1903 * interchangeably. 1904 */ 1905 static int 1906 mly_cam_attach(struct mly_softc *sc) 1907 { 1908 struct cam_devq *devq; 1909 int chn, i; 1910 1911 debug_called(1); 1912 1913 /* 1914 * Allocate a devq for all our channels combined. 1915 */ 1916 if ((devq = cam_simq_alloc(sc->mly_controllerinfo->maximum_parallel_commands)) == NULL) { 1917 mly_printf(sc, "can't allocate CAM SIM queue\n"); 1918 return(ENOMEM); 1919 } 1920 1921 /* 1922 * If physical channel registration has been requested, register these first. 1923 * Note that we enable tagged command queueing for physical channels. 1924 */ 1925 if (ktestenv("hw.mly.register_physical_channels")) { 1926 chn = 0; 1927 for (i = 0; i < sc->mly_controllerinfo->physical_channels_present; i++, chn++) { 1928 1929 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1930 device_get_unit(sc->mly_dev), 1931 &sim_mplock, 1932 sc->mly_controllerinfo->maximum_parallel_commands, 1933 1, devq)) == NULL) { 1934 return(ENOMEM); 1935 } 1936 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1937 mly_printf(sc, "CAM XPT physical channel registration failed\n"); 1938 return(ENXIO); 1939 } 1940 debug(1, "registered physical channel %d", chn); 1941 } 1942 } 1943 1944 /* 1945 * Register our virtual channels, with bus numbers matching channel numbers. 1946 */ 1947 chn = sc->mly_controllerinfo->physical_channels_present; 1948 for (i = 0; i < sc->mly_controllerinfo->virtual_channels_present; i++, chn++) { 1949 if ((sc->mly_cam_sim[chn] = cam_sim_alloc(mly_cam_action, mly_cam_poll, "mly", sc, 1950 device_get_unit(sc->mly_dev), 1951 &sim_mplock, 1952 sc->mly_controllerinfo->maximum_parallel_commands, 1953 0, devq)) == NULL) { 1954 return(ENOMEM); 1955 } 1956 if (xpt_bus_register(sc->mly_cam_sim[chn], chn)) { 1957 mly_printf(sc, "CAM XPT virtual channel registration failed\n"); 1958 return(ENXIO); 1959 } 1960 debug(1, "registered virtual channel %d", chn); 1961 } 1962 1963 /* 1964 * This is the total number of channels that (might have been) registered with 1965 * CAM. Some may not have been; check the mly_cam_sim array to be certain. 1966 */ 1967 sc->mly_cam_channels = sc->mly_controllerinfo->physical_channels_present + 1968 sc->mly_controllerinfo->virtual_channels_present; 1969 1970 return(0); 1971 } 1972 1973 /******************************************************************************** 1974 * Detach from CAM 1975 */ 1976 static void 1977 mly_cam_detach(struct mly_softc *sc) 1978 { 1979 int i; 1980 1981 debug_called(1); 1982 1983 for (i = 0; i < sc->mly_cam_channels; i++) { 1984 if (sc->mly_cam_sim[i] != NULL) { 1985 xpt_bus_deregister(cam_sim_path(sc->mly_cam_sim[i])); 1986 cam_sim_free(sc->mly_cam_sim[i]); 1987 } 1988 } 1989 if (sc->mly_cam_devq != NULL) 1990 cam_simq_release(sc->mly_cam_devq); 1991 } 1992 1993 /************************************************************************ 1994 * Rescan a device. 1995 */ 1996 static void 1997 mly_cam_rescan_btl(struct mly_softc *sc, int bus, int target) 1998 { 1999 union ccb *ccb; 2000 2001 debug_called(1); 2002 2003 if ((ccb = xpt_alloc_ccb()) == NULL) { 2004 mly_printf(sc, "rescan failed (can't allocate CCB)\n"); 2005 return; 2006 } 2007 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 2008 cam_sim_path(sc->mly_cam_sim[bus]), target, 0) != CAM_REQ_CMP) { 2009 mly_printf(sc, "rescan failed (can't create path)\n"); 2010 xpt_free_ccb(&ccb->ccb_h); 2011 return; 2012 } 2013 2014 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.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 xpt_free_ccb(&ccb->ccb_h); 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, "MYLX", 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 %pb%i\n", 2606 "\20\1busy\2complete\3slotted\4mapped\5datain\6dataout\n", 2607 mc->mc_flags); 2608 mly_printf(sc, " complete %p\n", mc->mc_complete); 2609 mly_printf(sc, " private %p\n", mc->mc_private); 2610 } 2611 2612 /******************************************************************************** 2613 * Print a command packet 2614 */ 2615 static void 2616 mly_print_packet(struct mly_command *mc) 2617 { 2618 struct mly_softc *sc = mc->mc_sc; 2619 struct mly_command_generic *ge = (struct mly_command_generic *)mc->mc_packet; 2620 struct mly_command_scsi_small *ss = (struct mly_command_scsi_small *)mc->mc_packet; 2621 struct mly_command_scsi_large *sl = (struct mly_command_scsi_large *)mc->mc_packet; 2622 struct mly_command_ioctl *io = (struct mly_command_ioctl *)mc->mc_packet; 2623 int transfer; 2624 char hexstr[HEX_NCPYLEN(MLY_CMD_SCSI_SMALL_CDB)]; 2625 2626 mly_printf(sc, " command_id %d\n", ge->command_id); 2627 mly_printf(sc, " opcode %d\n", ge->opcode); 2628 mly_printf(sc, " command_control fua %d dpo %d est %d dd %s nas %d ddis %d\n", 2629 ge->command_control.force_unit_access, 2630 ge->command_control.disable_page_out, 2631 ge->command_control.extended_sg_table, 2632 (ge->command_control.data_direction == MLY_CCB_WRITE) ? "WRITE" : "READ", 2633 ge->command_control.no_auto_sense, 2634 ge->command_control.disable_disconnect); 2635 mly_printf(sc, " data_size %d\n", ge->data_size); 2636 mly_printf(sc, " sense_buffer_address 0x%llx\n", ge->sense_buffer_address); 2637 mly_printf(sc, " lun %d\n", ge->addr.phys.lun); 2638 mly_printf(sc, " target %d\n", ge->addr.phys.target); 2639 mly_printf(sc, " channel %d\n", ge->addr.phys.channel); 2640 mly_printf(sc, " logical device %d\n", ge->addr.log.logdev); 2641 mly_printf(sc, " controller %d\n", ge->addr.phys.controller); 2642 mly_printf(sc, " timeout %d %s\n", 2643 ge->timeout.value, 2644 (ge->timeout.scale == MLY_TIMEOUT_SECONDS) ? "seconds" : 2645 ((ge->timeout.scale == MLY_TIMEOUT_MINUTES) ? "minutes" : "hours")); 2646 mly_printf(sc, " maximum_sense_size %d\n", ge->maximum_sense_size); 2647 switch(ge->opcode) { 2648 case MDACMD_SCSIPT: 2649 case MDACMD_SCSI: 2650 mly_printf(sc, " cdb length %d\n", ss->cdb_length); 2651 mly_printf(sc, " cdb %s\n", 2652 hexncpy(ss->cdb, ss->cdb_length, hexstr, HEX_NCPYLEN(ss->cdb_length), " ")); 2653 transfer = 1; 2654 break; 2655 case MDACMD_SCSILC: 2656 case MDACMD_SCSILCPT: 2657 mly_printf(sc, " cdb length %d\n", sl->cdb_length); 2658 mly_printf(sc, " cdb 0x%llx\n", sl->cdb_physaddr); 2659 transfer = 1; 2660 break; 2661 case MDACMD_IOCTL: 2662 mly_printf(sc, " sub_ioctl 0x%x\n", io->sub_ioctl); 2663 switch(io->sub_ioctl) { 2664 case MDACIOCTL_SETMEMORYMAILBOX: 2665 mly_printf(sc, " health_buffer_size %d\n", 2666 io->param.setmemorymailbox.health_buffer_size); 2667 mly_printf(sc, " health_buffer_phys 0x%llx\n", 2668 io->param.setmemorymailbox.health_buffer_physaddr); 2669 mly_printf(sc, " command_mailbox 0x%llx\n", 2670 io->param.setmemorymailbox.command_mailbox_physaddr); 2671 mly_printf(sc, " status_mailbox 0x%llx\n", 2672 io->param.setmemorymailbox.status_mailbox_physaddr); 2673 transfer = 0; 2674 break; 2675 2676 case MDACIOCTL_SETREALTIMECLOCK: 2677 case MDACIOCTL_GETHEALTHSTATUS: 2678 case MDACIOCTL_GETCONTROLLERINFO: 2679 case MDACIOCTL_GETLOGDEVINFOVALID: 2680 case MDACIOCTL_GETPHYSDEVINFOVALID: 2681 case MDACIOCTL_GETPHYSDEVSTATISTICS: 2682 case MDACIOCTL_GETLOGDEVSTATISTICS: 2683 case MDACIOCTL_GETCONTROLLERSTATISTICS: 2684 case MDACIOCTL_GETBDT_FOR_SYSDRIVE: 2685 case MDACIOCTL_CREATENEWCONF: 2686 case MDACIOCTL_ADDNEWCONF: 2687 case MDACIOCTL_GETDEVCONFINFO: 2688 case MDACIOCTL_GETFREESPACELIST: 2689 case MDACIOCTL_MORE: 2690 case MDACIOCTL_SETPHYSDEVPARAMETER: 2691 case MDACIOCTL_GETPHYSDEVPARAMETER: 2692 case MDACIOCTL_GETLOGDEVPARAMETER: 2693 case MDACIOCTL_SETLOGDEVPARAMETER: 2694 mly_printf(sc, " param %10D\n", io->param.data.param, " "); 2695 transfer = 1; 2696 break; 2697 2698 case MDACIOCTL_GETEVENT: 2699 mly_printf(sc, " event %d\n", 2700 io->param.getevent.sequence_number_low + ((u_int32_t)io->addr.log.logdev << 16)); 2701 transfer = 1; 2702 break; 2703 2704 case MDACIOCTL_SETRAIDDEVSTATE: 2705 mly_printf(sc, " state %d\n", io->param.setraiddevstate.state); 2706 transfer = 0; 2707 break; 2708 2709 case MDACIOCTL_XLATEPHYSDEVTORAIDDEV: 2710 mly_printf(sc, " raid_device %d\n", io->param.xlatephysdevtoraiddev.raid_device); 2711 mly_printf(sc, " controller %d\n", io->param.xlatephysdevtoraiddev.controller); 2712 mly_printf(sc, " channel %d\n", io->param.xlatephysdevtoraiddev.channel); 2713 mly_printf(sc, " target %d\n", io->param.xlatephysdevtoraiddev.target); 2714 mly_printf(sc, " lun %d\n", io->param.xlatephysdevtoraiddev.lun); 2715 transfer = 0; 2716 break; 2717 2718 case MDACIOCTL_GETGROUPCONFINFO: 2719 mly_printf(sc, " group %d\n", io->param.getgroupconfinfo.group); 2720 transfer = 1; 2721 break; 2722 2723 case MDACIOCTL_GET_SUBSYSTEM_DATA: 2724 case MDACIOCTL_SET_SUBSYSTEM_DATA: 2725 case MDACIOCTL_STARTDISOCVERY: 2726 case MDACIOCTL_INITPHYSDEVSTART: 2727 case MDACIOCTL_INITPHYSDEVSTOP: 2728 case MDACIOCTL_INITRAIDDEVSTART: 2729 case MDACIOCTL_INITRAIDDEVSTOP: 2730 case MDACIOCTL_REBUILDRAIDDEVSTART: 2731 case MDACIOCTL_REBUILDRAIDDEVSTOP: 2732 case MDACIOCTL_MAKECONSISTENTDATASTART: 2733 case MDACIOCTL_MAKECONSISTENTDATASTOP: 2734 case MDACIOCTL_CONSISTENCYCHECKSTART: 2735 case MDACIOCTL_CONSISTENCYCHECKSTOP: 2736 case MDACIOCTL_RESETDEVICE: 2737 case MDACIOCTL_FLUSHDEVICEDATA: 2738 case MDACIOCTL_PAUSEDEVICE: 2739 case MDACIOCTL_UNPAUSEDEVICE: 2740 case MDACIOCTL_LOCATEDEVICE: 2741 case MDACIOCTL_SETMASTERSLAVEMODE: 2742 case MDACIOCTL_DELETERAIDDEV: 2743 case MDACIOCTL_REPLACEINTERNALDEV: 2744 case MDACIOCTL_CLEARCONF: 2745 case MDACIOCTL_GETCONTROLLERPARAMETER: 2746 case MDACIOCTL_SETCONTRLLERPARAMETER: 2747 case MDACIOCTL_CLEARCONFSUSPMODE: 2748 case MDACIOCTL_STOREIMAGE: 2749 case MDACIOCTL_READIMAGE: 2750 case MDACIOCTL_FLASHIMAGES: 2751 case MDACIOCTL_RENAMERAIDDEV: 2752 default: /* no idea what to print */ 2753 transfer = 0; 2754 break; 2755 } 2756 break; 2757 2758 case MDACMD_IOCTLCHECK: 2759 case MDACMD_MEMCOPY: 2760 default: 2761 transfer = 0; 2762 break; /* print nothing */ 2763 } 2764 if (transfer) { 2765 if (ge->command_control.extended_sg_table) { 2766 mly_printf(sc, " sg table 0x%llx/%d\n", 2767 ge->transfer.indirect.table_physaddr[0], ge->transfer.indirect.entries[0]); 2768 } else { 2769 mly_printf(sc, " 0000 0x%llx/%lld\n", 2770 ge->transfer.direct.sg[0].physaddr, ge->transfer.direct.sg[0].length); 2771 mly_printf(sc, " 0001 0x%llx/%lld\n", 2772 ge->transfer.direct.sg[1].physaddr, ge->transfer.direct.sg[1].length); 2773 } 2774 } 2775 } 2776 2777 /******************************************************************************** 2778 * Panic in a slightly informative fashion 2779 */ 2780 static void 2781 mly_panic(struct mly_softc *sc, char *reason) 2782 { 2783 mly_printstate(sc); 2784 panic(reason); 2785 } 2786 2787 /******************************************************************************** 2788 * Print queue statistics, callable from DDB. 2789 */ 2790 void 2791 mly_print_controller(int controller) 2792 { 2793 struct mly_softc *sc; 2794 2795 if ((sc = devclass_get_softc(devclass_find("mly"), controller)) == NULL) { 2796 kprintf("mly: controller %d invalid\n", controller); 2797 } else { 2798 device_printf(sc->mly_dev, "queue curr max\n"); 2799 device_printf(sc->mly_dev, "free %04d/%04d\n", 2800 sc->mly_qstat[MLYQ_FREE].q_length, sc->mly_qstat[MLYQ_FREE].q_max); 2801 device_printf(sc->mly_dev, "busy %04d/%04d\n", 2802 sc->mly_qstat[MLYQ_BUSY].q_length, sc->mly_qstat[MLYQ_BUSY].q_max); 2803 device_printf(sc->mly_dev, "complete %04d/%04d\n", 2804 sc->mly_qstat[MLYQ_COMPLETE].q_length, sc->mly_qstat[MLYQ_COMPLETE].q_max); 2805 } 2806 } 2807 #endif 2808 2809 2810 /******************************************************************************** 2811 ******************************************************************************** 2812 Control device interface 2813 ******************************************************************************** 2814 ********************************************************************************/ 2815 2816 /******************************************************************************** 2817 * Accept an open operation on the control device. 2818 */ 2819 static int 2820 mly_user_open(struct dev_open_args *ap) 2821 { 2822 cdev_t dev = ap->a_head.a_dev; 2823 int unit = minor(dev); 2824 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2825 2826 sc->mly_state |= MLY_STATE_OPEN; 2827 return(0); 2828 } 2829 2830 /******************************************************************************** 2831 * Accept the last close on the control device. 2832 */ 2833 static int 2834 mly_user_close(struct dev_close_args *ap) 2835 { 2836 cdev_t dev = ap->a_head.a_dev; 2837 int unit = minor(dev); 2838 struct mly_softc *sc = devclass_get_softc(devclass_find("mly"), unit); 2839 2840 sc->mly_state &= ~MLY_STATE_OPEN; 2841 return (0); 2842 } 2843 2844 /******************************************************************************** 2845 * Handle controller-specific control operations. 2846 */ 2847 static int 2848 mly_user_ioctl(struct dev_ioctl_args *ap) 2849 { 2850 cdev_t dev = ap->a_head.a_dev; 2851 caddr_t addr = ap->a_data; 2852 u_long cmd = ap->a_cmd; 2853 struct mly_softc *sc = (struct mly_softc *)dev->si_drv1; 2854 struct mly_user_command *uc = (struct mly_user_command *)addr; 2855 struct mly_user_health *uh = (struct mly_user_health *)addr; 2856 2857 switch(cmd) { 2858 case MLYIO_COMMAND: 2859 return(mly_user_command(sc, uc)); 2860 case MLYIO_HEALTH: 2861 return(mly_user_health(sc, uh)); 2862 default: 2863 return(ENOIOCTL); 2864 } 2865 } 2866 2867 /******************************************************************************** 2868 * Execute a command passed in from userspace. 2869 * 2870 * The control structure contains the actual command for the controller, as well 2871 * as the user-space data pointer and data size, and an optional sense buffer 2872 * size/pointer. On completion, the data size is adjusted to the command 2873 * residual, and the sense buffer size to the size of the returned sense data. 2874 * 2875 */ 2876 static int 2877 mly_user_command(struct mly_softc *sc, struct mly_user_command *uc) 2878 { 2879 struct mly_command *mc; 2880 int error; 2881 2882 /* allocate a command */ 2883 if (mly_alloc_command(sc, &mc)) { 2884 error = ENOMEM; 2885 goto out; /* XXX Linux version will wait for a command */ 2886 } 2887 2888 /* handle data size/direction */ 2889 mc->mc_length = (uc->DataTransferLength >= 0) ? uc->DataTransferLength : -uc->DataTransferLength; 2890 if (mc->mc_length > 0) 2891 mc->mc_data = kmalloc(mc->mc_length, M_DEVBUF, M_INTWAIT); 2892 if (uc->DataTransferLength > 0) { 2893 mc->mc_flags |= MLY_CMD_DATAIN; 2894 bzero(mc->mc_data, mc->mc_length); 2895 } 2896 if (uc->DataTransferLength < 0) { 2897 mc->mc_flags |= MLY_CMD_DATAOUT; 2898 if ((error = copyin(uc->DataTransferBuffer, mc->mc_data, mc->mc_length)) != 0) 2899 goto out; 2900 } 2901 2902 /* copy the controller command */ 2903 bcopy(&uc->CommandMailbox, mc->mc_packet, sizeof(uc->CommandMailbox)); 2904 2905 /* clear command completion handler so that we get woken up */ 2906 mc->mc_complete = NULL; 2907 2908 /* execute the command */ 2909 if ((error = mly_start(mc)) != 0) 2910 goto out; 2911 crit_enter(); 2912 while (!(mc->mc_flags & MLY_CMD_COMPLETE)) 2913 tsleep(mc, 0, "mlyioctl", 0); 2914 crit_exit(); 2915 2916 /* return the data to userspace */ 2917 if (uc->DataTransferLength > 0) 2918 if ((error = copyout(mc->mc_data, uc->DataTransferBuffer, mc->mc_length)) != 0) 2919 goto out; 2920 2921 /* return the sense buffer to userspace */ 2922 if ((uc->RequestSenseLength > 0) && (mc->mc_sense > 0)) { 2923 if ((error = copyout(mc->mc_packet, uc->RequestSenseBuffer, 2924 min(uc->RequestSenseLength, mc->mc_sense))) != 0) 2925 goto out; 2926 } 2927 2928 /* return command results to userspace (caller will copy out) */ 2929 uc->DataTransferLength = mc->mc_resid; 2930 uc->RequestSenseLength = min(uc->RequestSenseLength, mc->mc_sense); 2931 uc->CommandStatus = mc->mc_status; 2932 error = 0; 2933 2934 out: 2935 if (mc->mc_data != NULL) 2936 kfree(mc->mc_data, M_DEVBUF); 2937 if (mc != NULL) 2938 mly_release_command(mc); 2939 return(error); 2940 } 2941 2942 /******************************************************************************** 2943 * Return health status to userspace. If the health change index in the user 2944 * structure does not match that currently exported by the controller, we 2945 * return the current status immediately. Otherwise, we block until either 2946 * interrupted or new status is delivered. 2947 */ 2948 static int 2949 mly_user_health(struct mly_softc *sc, struct mly_user_health *uh) 2950 { 2951 struct mly_health_status mh; 2952 int error; 2953 2954 /* fetch the current health status from userspace */ 2955 if ((error = copyin(uh->HealthStatusBuffer, &mh, sizeof(mh))) != 0) 2956 return(error); 2957 2958 /* spin waiting for a status update */ 2959 crit_enter(); 2960 error = EWOULDBLOCK; 2961 while ((error != 0) && (sc->mly_event_change == mh.change_counter)) 2962 error = tsleep(&sc->mly_event_change, PCATCH, "mlyhealth", 0); 2963 crit_exit(); 2964 2965 /* copy the controller's health status buffer out (there is a race here if it changes again) */ 2966 error = copyout(&sc->mly_mmbox->mmm_health.status, uh->HealthStatusBuffer, 2967 sizeof(uh->HealthStatusBuffer)); 2968 return(error); 2969 } 2970 2971 #ifdef MLY_DEBUG 2972 static int 2973 mly_timeout(struct mly_softc *sc) 2974 { 2975 struct mly_command *mc; 2976 int deadline; 2977 2978 deadline = time_uptime - MLY_CMD_TIMEOUT; 2979 TAILQ_FOREACH(mc, &sc->mly_busy, mc_link) { 2980 if ((mc->mc_timestamp < deadline)) { 2981 device_printf(sc->mly_dev, 2982 "COMMAND %p TIMEOUT AFTER %d SECONDS\n", mc, 2983 (int)(time_uptime - mc->mc_timestamp)); 2984 } 2985 } 2986 2987 callout_reset(&sc->mly_timeout, MLY_CMD_TIMEOUT * hz, 2988 (timeout_t *)mly_timeout, sc); 2989 2990 return (0); 2991 } 2992 #endif 2993