1 /*- 2 * Copyright (c) 2001 Michael Smith 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /* 30 * Common Interface for SCSI-3 Support driver. 31 * 32 * CISS claims to provide a common interface between a generic SCSI 33 * transport and an intelligent host adapter. 34 * 35 * This driver supports CISS as defined in the document "CISS Command 36 * Interface for SCSI-3 Support Open Specification", Version 1.04, 37 * Valence Number 1, dated 20001127, produced by Compaq Computer 38 * Corporation. This document appears to be a hastily and somewhat 39 * arbitrarlily cut-down version of a larger (and probably even more 40 * chaotic and inconsistent) Compaq internal document. Various 41 * details were also gleaned from Compaq's "cciss" driver for Linux. 42 * 43 * We provide a shim layer between the CISS interface and CAM, 44 * offloading most of the queueing and being-a-disk chores onto CAM. 45 * Entry to the driver is via the PCI bus attachment (ciss_probe, 46 * ciss_attach, etc) and via the CAM interface (ciss_cam_action, 47 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI 48 * citizens and we have to fake up some responses to get reasonable 49 * behaviour out of them. In addition, the CISS command set is by no 50 * means adequate to support the functionality of a RAID controller, 51 * and thus the supported Compaq adapters utilise portions of the 52 * control protocol from earlier Compaq adapter families. 53 * 54 * Note that we only support the "simple" transport layer over PCI. 55 * This interface (ab)uses the I2O register set (specifically the post 56 * queues) to exchange commands with the adapter. Other interfaces 57 * are available, but we aren't supposed to know about them, and it is 58 * dubious whether they would provide major performance improvements 59 * except under extreme load. 60 * 61 * Currently the only supported CISS adapters are the Compaq Smart 62 * Array 5* series (5300, 5i, 532). Even with only three adapters, 63 * Compaq still manage to have interface variations. 64 * 65 * 66 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as 67 * well as Paul Saab at Yahoo! for their assistance in making this 68 * driver happen. 69 */ 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/malloc.h> 74 #include <sys/kernel.h> 75 #include <sys/bus.h> 76 #include <sys/conf.h> 77 #include <sys/stat.h> 78 79 #include <cam/cam.h> 80 #include <cam/cam_ccb.h> 81 #include <cam/cam_periph.h> 82 #include <cam/cam_sim.h> 83 #include <cam/cam_xpt_sim.h> 84 #include <cam/scsi/scsi_all.h> 85 #include <cam/scsi/scsi_message.h> 86 87 #include <machine/clock.h> 88 #include <machine/bus_memio.h> 89 #include <machine/bus.h> 90 #include <machine/endian.h> 91 #include <machine/resource.h> 92 #include <sys/rman.h> 93 94 #include <dev/pci/pcireg.h> 95 #include <dev/pci/pcivar.h> 96 97 #include <dev/ciss/cissreg.h> 98 #include <dev/ciss/cissvar.h> 99 #include <dev/ciss/cissio.h> 100 101 MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers"); 102 103 /* pci interface */ 104 static int ciss_lookup(device_t dev); 105 static int ciss_probe(device_t dev); 106 static int ciss_attach(device_t dev); 107 static int ciss_detach(device_t dev); 108 static int ciss_shutdown(device_t dev); 109 110 /* (de)initialisation functions, control wrappers */ 111 static int ciss_init_pci(struct ciss_softc *sc); 112 static int ciss_wait_adapter(struct ciss_softc *sc); 113 static int ciss_flush_adapter(struct ciss_softc *sc); 114 static int ciss_init_requests(struct ciss_softc *sc); 115 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, 116 int nseg, int error); 117 static int ciss_identify_adapter(struct ciss_softc *sc); 118 static int ciss_init_logical(struct ciss_softc *sc); 119 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld); 120 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld); 121 static int ciss_update_config(struct ciss_softc *sc); 122 static int ciss_accept_media(struct ciss_softc *sc, int ldrive, int async); 123 static void ciss_accept_media_complete(struct ciss_request *cr); 124 static void ciss_free(struct ciss_softc *sc); 125 126 /* request submission/completion */ 127 static int ciss_start(struct ciss_request *cr); 128 static void ciss_done(struct ciss_softc *sc); 129 static void ciss_intr(void *arg); 130 static void ciss_complete(struct ciss_softc *sc); 131 static int ciss_report_request(struct ciss_request *cr, int *command_status, 132 int *scsi_status); 133 static int ciss_synch_request(struct ciss_request *cr, int timeout); 134 static int ciss_poll_request(struct ciss_request *cr, int timeout); 135 static int ciss_wait_request(struct ciss_request *cr, int timeout); 136 #if 0 137 static int ciss_abort_request(struct ciss_request *cr); 138 #endif 139 140 /* request queueing */ 141 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp); 142 static void ciss_preen_command(struct ciss_request *cr); 143 static void ciss_release_request(struct ciss_request *cr); 144 145 /* request helpers */ 146 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 147 int opcode, void **bufp, size_t bufsize); 148 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc); 149 150 /* DMA map/unmap */ 151 static int ciss_map_request(struct ciss_request *cr); 152 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, 153 int nseg, int error); 154 static void ciss_unmap_request(struct ciss_request *cr); 155 156 /* CAM interface */ 157 static int ciss_cam_init(struct ciss_softc *sc); 158 static void ciss_cam_rescan_target(struct ciss_softc *sc, int target); 159 static void ciss_cam_rescan_all(struct ciss_softc *sc); 160 static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 161 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb); 162 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 163 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio); 164 static void ciss_cam_poll(struct cam_sim *sim); 165 static void ciss_cam_complete(struct ciss_request *cr); 166 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio); 167 static struct cam_periph *ciss_find_periph(struct ciss_softc *sc, int target); 168 static int ciss_name_device(struct ciss_softc *sc, int target); 169 170 /* periodic status monitoring */ 171 static void ciss_periodic(void *arg); 172 static void ciss_notify_event(struct ciss_softc *sc); 173 static void ciss_notify_complete(struct ciss_request *cr); 174 static int ciss_notify_abort(struct ciss_softc *sc); 175 static int ciss_notify_abort_bmic(struct ciss_softc *sc); 176 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn); 177 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn); 178 179 /* debugging output */ 180 static void ciss_print_request(struct ciss_request *cr); 181 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld); 182 static const char *ciss_name_ldrive_status(int status); 183 static int ciss_decode_ldrive_status(int status); 184 static const char *ciss_name_ldrive_org(int org); 185 static const char *ciss_name_command_status(int status); 186 187 /* 188 * PCI bus interface. 189 */ 190 static device_method_t ciss_methods[] = { 191 /* Device interface */ 192 DEVMETHOD(device_probe, ciss_probe), 193 DEVMETHOD(device_attach, ciss_attach), 194 DEVMETHOD(device_detach, ciss_detach), 195 DEVMETHOD(device_shutdown, ciss_shutdown), 196 { 0, 0 } 197 }; 198 199 static driver_t ciss_pci_driver = { 200 "ciss", 201 ciss_methods, 202 sizeof(struct ciss_softc) 203 }; 204 205 static devclass_t ciss_devclass; 206 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0); 207 208 /* 209 * Control device interface. 210 */ 211 static d_open_t ciss_open; 212 static d_close_t ciss_close; 213 static d_ioctl_t ciss_ioctl; 214 215 #define CISS_CDEV_MAJOR 166 216 217 static struct cdevsw ciss_cdevsw = { 218 .d_open = ciss_open, 219 .d_close = ciss_close, 220 .d_ioctl = ciss_ioctl, 221 .d_name = "ciss", 222 .d_maj = CISS_CDEV_MAJOR, 223 }; 224 225 /************************************************************************ 226 * CISS adapters amazingly don't have a defined programming interface 227 * value. (One could say some very despairing things about PCI and 228 * people just not getting the general idea.) So we are forced to 229 * stick with matching against subvendor/subdevice, and thus have to 230 * be updated for every new CISS adapter that appears. 231 */ 232 #define CISS_BOARD_SA5 (1<<0) 233 #define CISS_BOARD_SA5B (1<<1) 234 235 static struct 236 { 237 u_int16_t subvendor; 238 u_int16_t subdevice; 239 int flags; 240 char *desc; 241 } ciss_vendor_data[] = { 242 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" }, 243 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" }, 244 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" }, 245 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" }, 246 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" }, 247 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" }, 248 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" }, 249 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" }, 250 { 0, 0, 0, NULL } 251 }; 252 253 /************************************************************************ 254 * Find a match for the device in our list of known adapters. 255 */ 256 static int 257 ciss_lookup(device_t dev) 258 { 259 int i; 260 261 for (i = 0; ciss_vendor_data[i].desc != NULL; i++) 262 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) && 263 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) { 264 return(i); 265 } 266 return(-1); 267 } 268 269 /************************************************************************ 270 * Match a known CISS adapter. 271 */ 272 static int 273 ciss_probe(device_t dev) 274 { 275 int i; 276 277 i = ciss_lookup(dev); 278 if (i != -1) { 279 device_set_desc(dev, ciss_vendor_data[i].desc); 280 return(-10); 281 } 282 return(ENOENT); 283 } 284 285 /************************************************************************ 286 * Attach the driver to this adapter. 287 */ 288 static int 289 ciss_attach(device_t dev) 290 { 291 struct ciss_softc *sc; 292 int i, error; 293 294 debug_called(1); 295 296 #ifdef CISS_DEBUG 297 /* print structure/union sizes */ 298 debug_struct(ciss_command); 299 debug_struct(ciss_header); 300 debug_union(ciss_device_address); 301 debug_struct(ciss_cdb); 302 debug_struct(ciss_report_cdb); 303 debug_struct(ciss_notify_cdb); 304 debug_struct(ciss_notify); 305 debug_struct(ciss_message_cdb); 306 debug_struct(ciss_error_info_pointer); 307 debug_struct(ciss_error_info); 308 debug_struct(ciss_sg_entry); 309 debug_struct(ciss_config_table); 310 debug_struct(ciss_bmic_cdb); 311 debug_struct(ciss_bmic_id_ldrive); 312 debug_struct(ciss_bmic_id_lstatus); 313 debug_struct(ciss_bmic_id_table); 314 debug_struct(ciss_bmic_id_pdrive); 315 debug_struct(ciss_bmic_blink_pdrive); 316 debug_struct(ciss_bmic_flush_cache); 317 debug_const(CISS_MAX_REQUESTS); 318 debug_const(CISS_MAX_LOGICAL); 319 debug_const(CISS_INTERRUPT_COALESCE_DELAY); 320 debug_const(CISS_INTERRUPT_COALESCE_COUNT); 321 debug_const(CISS_COMMAND_ALLOC_SIZE); 322 debug_const(CISS_COMMAND_SG_LENGTH); 323 324 debug_type(cciss_pci_info_struct); 325 debug_type(cciss_coalint_struct); 326 debug_type(cciss_coalint_struct); 327 debug_type(NodeName_type); 328 debug_type(NodeName_type); 329 debug_type(Heartbeat_type); 330 debug_type(BusTypes_type); 331 debug_type(FirmwareVer_type); 332 debug_type(DriverVer_type); 333 debug_type(IOCTL_Command_struct); 334 #endif 335 336 sc = device_get_softc(dev); 337 sc->ciss_dev = dev; 338 339 /* 340 * Work out adapter type. 341 */ 342 i = ciss_lookup(dev); 343 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { 344 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5; 345 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { 346 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; 347 } else { 348 /* really an error on our part */ 349 ciss_printf(sc, "unable to determine hardware type\n"); 350 error = ENXIO; 351 goto out; 352 } 353 354 /* 355 * Do PCI-specific init. 356 */ 357 if ((error = ciss_init_pci(sc)) != 0) 358 goto out; 359 360 /* 361 * Initialise driver queues. 362 */ 363 ciss_initq_free(sc); 364 ciss_initq_busy(sc); 365 ciss_initq_complete(sc); 366 367 /* 368 * Initialise command/request pool. 369 */ 370 if ((error = ciss_init_requests(sc)) != 0) 371 goto out; 372 373 /* 374 * Get adapter information. 375 */ 376 if ((error = ciss_identify_adapter(sc)) != 0) 377 goto out; 378 379 /* 380 * Build our private table of logical devices. 381 */ 382 if ((error = ciss_init_logical(sc)) != 0) 383 goto out; 384 385 /* 386 * Enable interrupts so that the CAM scan can complete. 387 */ 388 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc); 389 390 /* 391 * Initialise the CAM interface. 392 */ 393 if ((error = ciss_cam_init(sc)) != 0) 394 goto out; 395 396 /* 397 * Start the heartbeat routine and event chain. 398 */ 399 ciss_periodic(sc); 400 401 /* 402 * Create the control device. 403 */ 404 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev), 405 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 406 "ciss%d", device_get_unit(sc->ciss_dev)); 407 sc->ciss_dev_t->si_drv1 = sc; 408 409 /* 410 * The adapter is running; synchronous commands can now sleep 411 * waiting for an interrupt to signal completion. 412 */ 413 sc->ciss_flags |= CISS_FLAG_RUNNING; 414 415 error = 0; 416 out: 417 if (error != 0) 418 ciss_free(sc); 419 return(error); 420 } 421 422 /************************************************************************ 423 * Detach the driver from this adapter. 424 */ 425 static int 426 ciss_detach(device_t dev) 427 { 428 struct ciss_softc *sc = device_get_softc(dev); 429 430 debug_called(1); 431 432 /* flush adapter cache */ 433 ciss_flush_adapter(sc); 434 435 destroy_dev(sc->ciss_dev_t); 436 437 /* release all resources */ 438 ciss_free(sc); 439 440 return(0); 441 442 } 443 444 /************************************************************************ 445 * Prepare adapter for system shutdown. 446 */ 447 static int 448 ciss_shutdown(device_t dev) 449 { 450 struct ciss_softc *sc = device_get_softc(dev); 451 452 debug_called(1); 453 454 /* flush adapter cache */ 455 ciss_flush_adapter(sc); 456 457 return(0); 458 } 459 460 /************************************************************************ 461 * Perform PCI-specific attachment actions. 462 */ 463 static int 464 ciss_init_pci(struct ciss_softc *sc) 465 { 466 uintptr_t cbase, csize, cofs; 467 int error; 468 469 debug_called(1); 470 471 /* 472 * Allocate register window first (we need this to find the config 473 * struct). 474 */ 475 error = ENXIO; 476 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS; 477 if ((sc->ciss_regs_resource = 478 bus_alloc_resource(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_regs_rid, 479 0, ~0, 1, RF_ACTIVE)) == NULL) { 480 ciss_printf(sc, "can't allocate register window\n"); 481 return(ENXIO); 482 } 483 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource); 484 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource); 485 486 /* 487 * Find the BAR holding the config structure. If it's not the one 488 * we already mapped for registers, map it too. 489 */ 490 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff; 491 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) { 492 if ((sc->ciss_cfg_resource = 493 bus_alloc_resource(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_cfg_rid, 494 0, ~0, 1, RF_ACTIVE)) == NULL) { 495 ciss_printf(sc, "can't allocate config window\n"); 496 return(ENXIO); 497 } 498 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource); 499 csize = rman_get_end(sc->ciss_cfg_resource) - 500 rman_get_start(sc->ciss_cfg_resource) + 1; 501 } else { 502 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource); 503 csize = rman_get_end(sc->ciss_regs_resource) - 504 rman_get_start(sc->ciss_regs_resource) + 1; 505 } 506 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF); 507 508 /* 509 * Use the base/size/offset values we just calculated to 510 * sanity-check the config structure. If it's OK, point to it. 511 */ 512 if ((cofs + sizeof(struct ciss_config_table)) > csize) { 513 ciss_printf(sc, "config table outside window\n"); 514 return(ENXIO); 515 } 516 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs); 517 debug(1, "config struct at %p", sc->ciss_cfg); 518 519 /* 520 * Validate the config structure. If we supported other transport 521 * methods, we could select amongst them at this point in time. 522 */ 523 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) { 524 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n", 525 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1], 526 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]); 527 return(ENXIO); 528 } 529 if ((sc->ciss_cfg->valence < CISS_MIN_VALENCE) || 530 (sc->ciss_cfg->valence > CISS_MAX_VALENCE)) { 531 ciss_printf(sc, "adapter interface specification (%d) unsupported\n", 532 sc->ciss_cfg->valence); 533 return(ENXIO); 534 } 535 536 /* 537 * Put the board into simple mode, and tell it we're using the low 538 * 4GB of RAM. Set the default interrupt coalescing options. 539 */ 540 if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) { 541 ciss_printf(sc, "adapter does not support 'simple' transport layer\n"); 542 return(ENXIO); 543 } 544 sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE; 545 sc->ciss_cfg->command_physlimit = 0; 546 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY; 547 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT; 548 549 if (ciss_update_config(sc)) { 550 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n", 551 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR)); 552 return(ENXIO); 553 } 554 if (!(sc->ciss_cfg->active_method != CISS_TRANSPORT_METHOD_SIMPLE)) { 555 ciss_printf(sc, 556 "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n", 557 sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method); 558 return(ENXIO); 559 } 560 561 /* 562 * Wait for the adapter to come ready. 563 */ 564 if ((error = ciss_wait_adapter(sc)) != 0) 565 return(error); 566 567 /* 568 * Turn off interrupts before we go routing anything. 569 */ 570 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); 571 572 /* 573 * Allocate and set up our interrupt. 574 */ 575 sc->ciss_irq_rid = 0; 576 if ((sc->ciss_irq_resource = 577 bus_alloc_resource(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 0, ~0, 1, 578 RF_ACTIVE | RF_SHAREABLE)) == NULL) { 579 ciss_printf(sc, "can't allocate interrupt\n"); 580 return(ENXIO); 581 } 582 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource, INTR_TYPE_CAM, ciss_intr, sc, 583 &sc->ciss_intr)) { 584 ciss_printf(sc, "can't set up interrupt\n"); 585 return(ENXIO); 586 } 587 588 /* 589 * Allocate the parent bus DMA tag appropriate for our PCI 590 * interface. 591 * 592 * Note that "simple" adapters can only address within a 32-bit 593 * span. 594 */ 595 if (bus_dma_tag_create(NULL, /* parent */ 596 1, 0, /* alignment, boundary */ 597 BUS_SPACE_MAXADDR, /* lowaddr */ 598 BUS_SPACE_MAXADDR, /* highaddr */ 599 NULL, NULL, /* filter, filterarg */ 600 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 601 CISS_COMMAND_SG_LENGTH, /* nsegments */ 602 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 603 BUS_DMA_ALLOCNOW, /* flags */ 604 NULL, NULL, /* lockfunc, lockarg */ 605 &sc->ciss_parent_dmat)) { 606 ciss_printf(sc, "can't allocate parent DMA tag\n"); 607 return(ENOMEM); 608 } 609 610 /* 611 * Create DMA tag for mapping buffers into adapter-addressable 612 * space. 613 */ 614 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 615 1, 0, /* alignment, boundary */ 616 BUS_SPACE_MAXADDR, /* lowaddr */ 617 BUS_SPACE_MAXADDR, /* highaddr */ 618 NULL, NULL, /* filter, filterarg */ 619 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */ 620 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 621 0, /* flags */ 622 busdma_lock_mutex, &Giant, /* lockfunc, lockarg */ 623 &sc->ciss_buffer_dmat)) { 624 ciss_printf(sc, "can't allocate buffer DMA tag\n"); 625 return(ENOMEM); 626 } 627 return(0); 628 } 629 630 /************************************************************************ 631 * Wait for the adapter to come ready. 632 */ 633 static int 634 ciss_wait_adapter(struct ciss_softc *sc) 635 { 636 int i; 637 638 debug_called(1); 639 640 /* 641 * Wait for the adapter to come ready. 642 */ 643 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) { 644 ciss_printf(sc, "waiting for adapter to come ready...\n"); 645 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) { 646 DELAY(1000000); /* one second */ 647 if (i > 30) { 648 ciss_printf(sc, "timed out waiting for adapter to come ready\n"); 649 return(EIO); 650 } 651 } 652 } 653 return(0); 654 } 655 656 /************************************************************************ 657 * Flush the adapter cache. 658 */ 659 static int 660 ciss_flush_adapter(struct ciss_softc *sc) 661 { 662 struct ciss_request *cr; 663 struct ciss_bmic_flush_cache *cbfc; 664 int error, command_status; 665 666 debug_called(1); 667 668 cr = NULL; 669 cbfc = NULL; 670 671 /* 672 * Build a BMIC request to flush the cache. We don't disable 673 * it, as we may be going to do more I/O (eg. we are emulating 674 * the Synchronise Cache command). 675 */ 676 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 677 error = ENOMEM; 678 goto out; 679 } 680 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE, 681 (void **)&cbfc, sizeof(*cbfc))) != 0) 682 goto out; 683 684 /* 685 * Submit the request and wait for it to complete. 686 */ 687 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 688 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error); 689 goto out; 690 } 691 692 /* 693 * Check response. 694 */ 695 ciss_report_request(cr, &command_status, NULL); 696 switch(command_status) { 697 case CISS_CMD_STATUS_SUCCESS: 698 break; 699 default: 700 ciss_printf(sc, "error flushing cache (%s)\n", 701 ciss_name_command_status(command_status)); 702 error = EIO; 703 goto out; 704 } 705 706 out: 707 if (cbfc != NULL) 708 free(cbfc, CISS_MALLOC_CLASS); 709 if (cr != NULL) 710 ciss_release_request(cr); 711 return(error); 712 } 713 714 /************************************************************************ 715 * Allocate memory for the adapter command structures, initialise 716 * the request structures. 717 * 718 * Note that the entire set of commands are allocated in a single 719 * contiguous slab. 720 */ 721 static int 722 ciss_init_requests(struct ciss_softc *sc) 723 { 724 struct ciss_request *cr; 725 int i; 726 727 debug_called(1); 728 729 /* 730 * Calculate the number of request structures/commands we are 731 * going to provide for this adapter. 732 */ 733 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands); 734 735 if (bootverbose) 736 ciss_printf(sc, "using %d of %d available commands\n", 737 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands); 738 739 /* 740 * Create the DMA tag for commands. 741 */ 742 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 743 1, 0, /* alignment, boundary */ 744 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 745 BUS_SPACE_MAXADDR, /* highaddr */ 746 NULL, NULL, /* filter, filterarg */ 747 CISS_COMMAND_ALLOC_SIZE * 748 sc->ciss_max_requests, 1, /* maxsize, nsegments */ 749 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 750 BUS_DMA_ALLOCNOW, /* flags */ 751 NULL, NULL, /* lockfunc, lockarg */ 752 &sc->ciss_command_dmat)) { 753 ciss_printf(sc, "can't allocate command DMA tag\n"); 754 return(ENOMEM); 755 } 756 /* 757 * Allocate memory and make it available for DMA. 758 */ 759 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command, 760 BUS_DMA_NOWAIT, &sc->ciss_command_map)) { 761 ciss_printf(sc, "can't allocate command memory\n"); 762 return(ENOMEM); 763 } 764 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map, sc->ciss_command, 765 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests, 766 ciss_command_map_helper, sc, 0); 767 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests); 768 769 /* 770 * Set up the request and command structures, push requests onto 771 * the free queue. 772 */ 773 for (i = 1; i < sc->ciss_max_requests; i++) { 774 cr = &sc->ciss_request[i]; 775 cr->cr_sc = sc; 776 cr->cr_tag = i; 777 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap); 778 ciss_enqueue_free(cr); 779 } 780 return(0); 781 } 782 783 static void 784 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 785 { 786 struct ciss_softc *sc = (struct ciss_softc *)arg; 787 788 sc->ciss_command_phys = segs->ds_addr; 789 } 790 791 /************************************************************************ 792 * Identify the adapter, print some information about it. 793 */ 794 static int 795 ciss_identify_adapter(struct ciss_softc *sc) 796 { 797 struct ciss_request *cr; 798 int error, command_status; 799 800 debug_called(1); 801 802 cr = NULL; 803 804 /* 805 * Get a request, allocate storage for the adapter data. 806 */ 807 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR, 808 (void **)&sc->ciss_id, 809 sizeof(*sc->ciss_id))) != 0) 810 goto out; 811 812 /* 813 * Submit the request and wait for it to complete. 814 */ 815 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 816 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error); 817 goto out; 818 } 819 820 /* 821 * Check response. 822 */ 823 ciss_report_request(cr, &command_status, NULL); 824 switch(command_status) { 825 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 826 break; 827 case CISS_CMD_STATUS_DATA_UNDERRUN: 828 case CISS_CMD_STATUS_DATA_OVERRUN: 829 ciss_printf(sc, "data over/underrun reading adapter information\n"); 830 default: 831 ciss_printf(sc, "error reading adapter information (%s)\n", 832 ciss_name_command_status(command_status)); 833 error = EIO; 834 goto out; 835 } 836 837 /* sanity-check reply */ 838 if (!sc->ciss_id->big_map_supported) { 839 ciss_printf(sc, "adapter does not support BIG_MAP\n"); 840 error = ENXIO; 841 goto out; 842 } 843 844 #if 0 845 /* XXX later revisions may not need this */ 846 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; 847 #endif 848 849 /* XXX only really required for old 5300 adapters? */ 850 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; 851 852 /* print information */ 853 if (bootverbose) { 854 ciss_printf(sc, " %d logical drive%s configured\n", 855 sc->ciss_id->configured_logical_drives, 856 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); 857 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision); 858 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count); 859 860 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature); 861 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence); 862 ciss_printf(sc, " supported I/O methods 0x%b\n", 863 sc->ciss_cfg->supported_methods, 864 "\20\1READY\2simple\3performant\4MEMQ\n"); 865 ciss_printf(sc, " active I/O method 0x%b\n", 866 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n"); 867 ciss_printf(sc, " 4G page base 0x%08x\n", 868 sc->ciss_cfg->command_physlimit); 869 ciss_printf(sc, " interrupt coalesce delay %dus\n", 870 sc->ciss_cfg->interrupt_coalesce_delay); 871 ciss_printf(sc, " interrupt coalesce count %d\n", 872 sc->ciss_cfg->interrupt_coalesce_count); 873 ciss_printf(sc, " max outstanding commands %d\n", 874 sc->ciss_cfg->max_outstanding_commands); 875 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types, 876 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n"); 877 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name); 878 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat); 879 } 880 881 out: 882 if (error) { 883 if (sc->ciss_id != NULL) { 884 free(sc->ciss_id, CISS_MALLOC_CLASS); 885 sc->ciss_id = NULL; 886 } 887 } 888 if (cr != NULL) 889 ciss_release_request(cr); 890 return(error); 891 } 892 893 /************************************************************************ 894 * Find logical drives on the adapter. 895 */ 896 static int 897 ciss_init_logical(struct ciss_softc *sc) 898 { 899 struct ciss_request *cr; 900 struct ciss_command *cc; 901 struct ciss_report_cdb *crc; 902 struct ciss_lun_report *cll; 903 int error, i; 904 size_t report_size; 905 int ndrives; 906 int command_status; 907 908 debug_called(1); 909 910 cr = NULL; 911 cll = NULL; 912 913 /* 914 * Get a request, allocate storage for the address list. 915 */ 916 if ((error = ciss_get_request(sc, &cr)) != 0) 917 goto out; 918 report_size = sizeof(*cll) + CISS_MAX_LOGICAL * sizeof(union ciss_device_address); 919 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 920 ciss_printf(sc, "can't allocate memory for logical drive list\n"); 921 error = ENOMEM; 922 goto out; 923 } 924 925 /* 926 * Build the Report Logical LUNs command. 927 */ 928 cc = CISS_FIND_COMMAND(cr); 929 cr->cr_data = cll; 930 cr->cr_length = report_size; 931 cr->cr_flags = CISS_REQ_DATAIN; 932 933 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 934 cc->header.address.physical.bus = 0; 935 cc->header.address.physical.target = 0; 936 cc->cdb.cdb_length = sizeof(*crc); 937 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 938 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 939 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 940 cc->cdb.timeout = 30; /* XXX better suggestions? */ 941 942 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]); 943 bzero(crc, sizeof(*crc)); 944 crc->opcode = CISS_OPCODE_REPORT_LOGICAL_LUNS; 945 crc->length = htonl(report_size); /* big-endian field */ 946 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */ 947 948 /* 949 * Submit the request and wait for it to complete. (timeout 950 * here should be much greater than above) 951 */ 952 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 953 ciss_printf(sc, "error sending Report Logical LUNs command (%d)\n", error); 954 goto out; 955 } 956 957 /* 958 * Check response. Note that data over/underrun is OK. 959 */ 960 ciss_report_request(cr, &command_status, NULL); 961 switch(command_status) { 962 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 963 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */ 964 break; 965 case CISS_CMD_STATUS_DATA_OVERRUN: 966 ciss_printf(sc, "WARNING: more logical drives than driver limit (%d), adjust CISS_MAX_LOGICAL\n", 967 CISS_MAX_LOGICAL); 968 break; 969 default: 970 ciss_printf(sc, "error detecting logical drive configuration (%s)\n", 971 ciss_name_command_status(command_status)); 972 error = EIO; 973 goto out; 974 } 975 ciss_release_request(cr); 976 cr = NULL; 977 978 /* sanity-check reply */ 979 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 980 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) { 981 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n", 982 ndrives, CISS_MAX_LOGICAL); 983 return(ENXIO); 984 } 985 986 /* 987 * Save logical drive information. 988 */ 989 if (bootverbose) 990 ciss_printf(sc, "%d logical drive%s\n", ndrives, (ndrives > 1) ? "s" : ""); 991 if (ndrives != sc->ciss_id->configured_logical_drives) 992 ciss_printf(sc, "logical drive map claims %d drives, but adapter claims %d\n", 993 ndrives, sc->ciss_id->configured_logical_drives); 994 for (i = 0; i < CISS_MAX_LOGICAL; i++) { 995 if (i < ndrives) { 996 sc->ciss_logical[i].cl_address = cll->lun[i]; /* XXX endianness? */ 997 if (ciss_identify_logical(sc, &sc->ciss_logical[i]) != 0) 998 continue; 999 /* 1000 * If the drive has had media exchanged, we should bring it online. 1001 */ 1002 if (sc->ciss_logical[i].cl_lstatus->media_exchanged) 1003 ciss_accept_media(sc, i, 0); 1004 1005 } else { 1006 sc->ciss_logical[i].cl_status = CISS_LD_NONEXISTENT; 1007 } 1008 } 1009 error = 0; 1010 1011 out: 1012 /* 1013 * Note that if the error is a timeout, we are taking a slight 1014 * risk here and assuming that the adapter will not respond at a 1015 * later time, scribbling over host memory. 1016 */ 1017 if (cr != NULL) 1018 ciss_release_request(cr); 1019 if (cll != NULL) 1020 free(cll, CISS_MALLOC_CLASS); 1021 return(error); 1022 } 1023 1024 static int 1025 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1026 { 1027 struct ciss_request *cr; 1028 struct ciss_command *cc; 1029 struct scsi_inquiry *inq; 1030 int error; 1031 int command_status; 1032 int lun; 1033 1034 cr = NULL; 1035 lun = ld->cl_address.logical.lun; 1036 1037 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry)); 1038 1039 if ((error = ciss_get_request(sc, &cr)) != 0) 1040 goto out; 1041 1042 cc = CISS_FIND_COMMAND(cr); 1043 cr->cr_data = &ld->cl_geometry; 1044 cr->cr_length = sizeof(ld->cl_geometry); 1045 cr->cr_flags = CISS_REQ_DATAIN; 1046 1047 cc->header.address.logical.mode = CISS_HDR_ADDRESS_MODE_LOGICAL; 1048 cc->header.address.logical.lun = lun; 1049 cc->cdb.cdb_length = 6; 1050 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1051 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1052 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1053 cc->cdb.timeout = 30; 1054 1055 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]); 1056 inq->opcode = INQUIRY; 1057 inq->byte2 = SI_EVPD; 1058 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY; 1059 inq->length = sizeof(ld->cl_geometry); 1060 1061 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1062 ciss_printf(sc, "error getting geometry (%d)\n", error); 1063 goto out; 1064 } 1065 1066 ciss_report_request(cr, &command_status, NULL); 1067 switch(command_status) { 1068 case CISS_CMD_STATUS_SUCCESS: 1069 case CISS_CMD_STATUS_DATA_UNDERRUN: 1070 break; 1071 case CISS_CMD_STATUS_DATA_OVERRUN: 1072 ciss_printf(sc, "WARNING: Data overrun\n"); 1073 break; 1074 default: 1075 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n", 1076 ciss_name_command_status(command_status)); 1077 break; 1078 } 1079 1080 out: 1081 if (cr != NULL) 1082 ciss_release_request(cr); 1083 return(error); 1084 } 1085 /************************************************************************ 1086 * Identify a logical drive, initialise state related to it. 1087 */ 1088 static int 1089 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1090 { 1091 struct ciss_request *cr; 1092 struct ciss_command *cc; 1093 struct ciss_bmic_cdb *cbc; 1094 int error, command_status; 1095 1096 debug_called(1); 1097 1098 cr = NULL; 1099 1100 /* 1101 * Build a BMIC request to fetch the drive ID. 1102 */ 1103 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE, 1104 (void **)&ld->cl_ldrive, 1105 sizeof(*ld->cl_ldrive))) != 0) 1106 goto out; 1107 cc = CISS_FIND_COMMAND(cr); 1108 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1109 cbc->log_drive = ld->cl_address.logical.lun; 1110 1111 /* 1112 * Submit the request and wait for it to complete. 1113 */ 1114 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1115 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error); 1116 goto out; 1117 } 1118 1119 /* 1120 * Check response. 1121 */ 1122 ciss_report_request(cr, &command_status, NULL); 1123 switch(command_status) { 1124 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1125 break; 1126 case CISS_CMD_STATUS_DATA_UNDERRUN: 1127 case CISS_CMD_STATUS_DATA_OVERRUN: 1128 ciss_printf(sc, "data over/underrun reading logical drive ID\n"); 1129 default: 1130 ciss_printf(sc, "error reading logical drive ID (%s)\n", 1131 ciss_name_command_status(command_status)); 1132 error = EIO; 1133 goto out; 1134 } 1135 ciss_release_request(cr); 1136 cr = NULL; 1137 1138 /* 1139 * Build a CISS BMIC command to get the logical drive status. 1140 */ 1141 if ((error = ciss_get_ldrive_status(sc, ld)) != 0) 1142 goto out; 1143 1144 /* 1145 * Get the logical drive geometry. 1146 */ 1147 if ((error = ciss_inquiry_logical(sc, ld)) != 0) 1148 goto out; 1149 1150 /* 1151 * Print the drive's basic characteristics. 1152 */ 1153 if (bootverbose) { 1154 ciss_printf(sc, "logical drive %d: %s, %dMB ", 1155 cbc->log_drive, ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance), 1156 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) * 1157 ld->cl_ldrive->block_size)); 1158 1159 ciss_print_ldrive(sc, ld); 1160 } 1161 out: 1162 if (error != 0) { 1163 /* make the drive not-exist */ 1164 ld->cl_status = CISS_LD_NONEXISTENT; 1165 if (ld->cl_ldrive != NULL) { 1166 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 1167 ld->cl_ldrive = NULL; 1168 } 1169 if (ld->cl_lstatus != NULL) { 1170 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 1171 ld->cl_lstatus = NULL; 1172 } 1173 } 1174 if (cr != NULL) 1175 ciss_release_request(cr); 1176 1177 return(error); 1178 } 1179 1180 /************************************************************************ 1181 * Get status for a logical drive. 1182 * 1183 * XXX should we also do this in response to Test Unit Ready? 1184 */ 1185 static int 1186 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld) 1187 { 1188 struct ciss_request *cr; 1189 struct ciss_command *cc; 1190 struct ciss_bmic_cdb *cbc; 1191 int error, command_status; 1192 1193 /* 1194 * Build a CISS BMIC command to get the logical drive status. 1195 */ 1196 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS, 1197 (void **)&ld->cl_lstatus, 1198 sizeof(*ld->cl_lstatus))) != 0) 1199 goto out; 1200 cc = CISS_FIND_COMMAND(cr); 1201 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1202 cbc->log_drive = ld->cl_address.logical.lun; 1203 1204 /* 1205 * Submit the request and wait for it to complete. 1206 */ 1207 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1208 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); 1209 goto out; 1210 } 1211 1212 /* 1213 * Check response. 1214 */ 1215 ciss_report_request(cr, &command_status, NULL); 1216 switch(command_status) { 1217 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1218 break; 1219 case CISS_CMD_STATUS_DATA_UNDERRUN: 1220 case CISS_CMD_STATUS_DATA_OVERRUN: 1221 ciss_printf(sc, "data over/underrun reading logical drive status\n"); 1222 default: 1223 ciss_printf(sc, "error reading logical drive status (%s)\n", 1224 ciss_name_command_status(command_status)); 1225 error = EIO; 1226 goto out; 1227 } 1228 1229 /* 1230 * Set the drive's summary status based on the returned status. 1231 * 1232 * XXX testing shows that a failed JBOD drive comes back at next 1233 * boot in "queued for expansion" mode. WTF? 1234 */ 1235 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status); 1236 1237 out: 1238 if (cr != NULL) 1239 ciss_release_request(cr); 1240 return(error); 1241 } 1242 1243 /************************************************************************ 1244 * Notify the adapter of a config update. 1245 */ 1246 static int 1247 ciss_update_config(struct ciss_softc *sc) 1248 { 1249 int i; 1250 1251 debug_called(1); 1252 1253 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE); 1254 for (i = 0; i < 1000; i++) { 1255 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) & 1256 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) { 1257 return(0); 1258 } 1259 DELAY(1000); 1260 } 1261 return(1); 1262 } 1263 1264 /************************************************************************ 1265 * Accept new media into a logical drive. 1266 * 1267 * XXX The drive has previously been offline; it would be good if we 1268 * could make sure it's not open right now. 1269 */ 1270 static int 1271 ciss_accept_media(struct ciss_softc *sc, int ldrive, int async) 1272 { 1273 struct ciss_request *cr; 1274 struct ciss_command *cc; 1275 struct ciss_bmic_cdb *cbc; 1276 int error; 1277 1278 debug(0, "bringing logical drive %d back online %ssynchronously", 1279 ldrive, async ? "a" : ""); 1280 1281 /* 1282 * Build a CISS BMIC command to bring the drive back online. 1283 */ 1284 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA, 1285 NULL, 0)) != 0) 1286 goto out; 1287 cc = CISS_FIND_COMMAND(cr); 1288 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1289 cbc->log_drive = ldrive; 1290 1291 /* 1292 * Dispatch the request asynchronously if we can't sleep waiting 1293 * for it to complete. 1294 */ 1295 if (async) { 1296 cr->cr_complete = ciss_accept_media_complete; 1297 if ((error = ciss_start(cr)) != 0) 1298 goto out; 1299 return(0); 1300 } else { 1301 /* 1302 * Submit the request and wait for it to complete. 1303 */ 1304 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1305 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); 1306 goto out; 1307 } 1308 } 1309 1310 /* 1311 * Call the completion callback manually. 1312 */ 1313 ciss_accept_media_complete(cr); 1314 return(0); 1315 1316 out: 1317 if (cr != NULL) 1318 ciss_release_request(cr); 1319 return(error); 1320 } 1321 1322 static void 1323 ciss_accept_media_complete(struct ciss_request *cr) 1324 { 1325 int command_status; 1326 1327 /* 1328 * Check response. 1329 */ 1330 ciss_report_request(cr, &command_status, NULL); 1331 switch(command_status) { 1332 case CISS_CMD_STATUS_SUCCESS: /* all OK */ 1333 /* we should get a logical drive status changed event here */ 1334 break; 1335 default: 1336 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n", 1337 ciss_name_command_status(command_status)); 1338 break; 1339 } 1340 ciss_release_request(cr); 1341 } 1342 1343 /************************************************************************ 1344 * Release adapter resources. 1345 */ 1346 static void 1347 ciss_free(struct ciss_softc *sc) 1348 { 1349 struct ciss_request *cr; 1350 1351 debug_called(1); 1352 1353 /* we're going away */ 1354 sc->ciss_flags |= CISS_FLAG_ABORTING; 1355 1356 /* terminate the periodic heartbeat routine */ 1357 untimeout(ciss_periodic, sc, sc->ciss_periodic); 1358 1359 /* cancel the Event Notify chain */ 1360 ciss_notify_abort(sc); 1361 1362 /* free the controller data */ 1363 if (sc->ciss_id != NULL) 1364 free(sc->ciss_id, CISS_MALLOC_CLASS); 1365 1366 /* release I/O resources */ 1367 if (sc->ciss_regs_resource != NULL) 1368 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1369 sc->ciss_regs_rid, sc->ciss_regs_resource); 1370 if (sc->ciss_cfg_resource != NULL) 1371 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1372 sc->ciss_cfg_rid, sc->ciss_cfg_resource); 1373 if (sc->ciss_intr != NULL) 1374 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr); 1375 if (sc->ciss_irq_resource != NULL) 1376 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ, 1377 sc->ciss_irq_rid, sc->ciss_irq_resource); 1378 1379 /* destroy DMA tags */ 1380 if (sc->ciss_parent_dmat) 1381 bus_dma_tag_destroy(sc->ciss_parent_dmat); 1382 1383 while ((cr = ciss_dequeue_free(sc)) != NULL) 1384 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap); 1385 if (sc->ciss_buffer_dmat) 1386 bus_dma_tag_destroy(sc->ciss_buffer_dmat); 1387 1388 /* destroy command memory and DMA tag */ 1389 if (sc->ciss_command != NULL) { 1390 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map); 1391 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map); 1392 } 1393 if (sc->ciss_command_dmat) 1394 bus_dma_tag_destroy(sc->ciss_command_dmat); 1395 1396 /* disconnect from CAM */ 1397 if (sc->ciss_cam_sim) { 1398 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim)); 1399 cam_sim_free(sc->ciss_cam_sim, 0); 1400 } 1401 if (sc->ciss_cam_devq) 1402 cam_simq_free(sc->ciss_cam_devq); 1403 /* XXX what about ciss_cam_path? */ 1404 } 1405 1406 /************************************************************************ 1407 * Give a command to the adapter. 1408 * 1409 * Note that this uses the simple transport layer directly. If we 1410 * want to add support for other layers, we'll need a switch of some 1411 * sort. 1412 * 1413 * Note that the simple transport layer has no way of refusing a 1414 * command; we only have as many request structures as the adapter 1415 * supports commands, so we don't have to check (this presumes that 1416 * the adapter can handle commands as fast as we throw them at it). 1417 */ 1418 static int 1419 ciss_start(struct ciss_request *cr) 1420 { 1421 struct ciss_command *cc; /* XXX debugging only */ 1422 int error; 1423 1424 cc = CISS_FIND_COMMAND(cr); 1425 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag); 1426 1427 /* 1428 * Map the request's data. 1429 */ 1430 if ((error = ciss_map_request(cr))) 1431 return(error); 1432 1433 #if 0 1434 ciss_print_request(cr); 1435 #endif 1436 1437 return(0); 1438 } 1439 1440 /************************************************************************ 1441 * Fetch completed request(s) from the adapter, queue them for 1442 * completion handling. 1443 * 1444 * Note that this uses the simple transport layer directly. If we 1445 * want to add support for other layers, we'll need a switch of some 1446 * sort. 1447 * 1448 * Note that the simple transport mechanism does not require any 1449 * reentrancy protection; the OPQ read is atomic. If there is a 1450 * chance of a race with something else that might move the request 1451 * off the busy list, then we will have to lock against that 1452 * (eg. timeouts, etc.) 1453 */ 1454 static void 1455 ciss_done(struct ciss_softc *sc) 1456 { 1457 struct ciss_request *cr; 1458 struct ciss_command *cc; 1459 u_int32_t tag, index; 1460 int complete; 1461 1462 debug_called(3); 1463 1464 /* 1465 * Loop quickly taking requests from the adapter and moving them 1466 * from the busy queue to the completed queue. 1467 */ 1468 complete = 0; 1469 for (;;) { 1470 1471 /* see if the OPQ contains anything */ 1472 if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc)) 1473 break; 1474 1475 tag = CISS_TL_SIMPLE_FETCH_CMD(sc); 1476 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY) 1477 break; 1478 index = tag >> 2; 1479 debug(2, "completed command %d%s", index, 1480 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); 1481 if (index >= sc->ciss_max_requests) { 1482 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); 1483 continue; 1484 } 1485 cr = &(sc->ciss_request[index]); 1486 cc = CISS_FIND_COMMAND(cr); 1487 cc->header.host_tag = tag; /* not updated by adapter */ 1488 if (ciss_remove_busy(cr)) { 1489 /* assume this is garbage out of the adapter */ 1490 ciss_printf(sc, "completed nonbusy request %d\n", index); 1491 } else { 1492 ciss_enqueue_complete(cr); 1493 } 1494 complete = 1; 1495 } 1496 1497 /* 1498 * Invoke completion processing. If we can defer this out of 1499 * interrupt context, that'd be good. 1500 */ 1501 if (complete) 1502 ciss_complete(sc); 1503 } 1504 1505 /************************************************************************ 1506 * Take an interrupt from the adapter. 1507 */ 1508 static void 1509 ciss_intr(void *arg) 1510 { 1511 struct ciss_softc *sc = (struct ciss_softc *)arg; 1512 1513 /* 1514 * The only interrupt we recognise indicates that there are 1515 * entries in the outbound post queue. 1516 */ 1517 ciss_done(sc); 1518 } 1519 1520 /************************************************************************ 1521 * Process completed requests. 1522 * 1523 * Requests can be completed in three fashions: 1524 * 1525 * - by invoking a callback function (cr_complete is non-null) 1526 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set) 1527 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context 1528 */ 1529 static void 1530 ciss_complete(struct ciss_softc *sc) 1531 { 1532 struct ciss_request *cr; 1533 1534 debug_called(2); 1535 1536 /* 1537 * Loop taking requests off the completed queue and performing 1538 * completion processing on them. 1539 */ 1540 for (;;) { 1541 if ((cr = ciss_dequeue_complete(sc)) == NULL) 1542 break; 1543 ciss_unmap_request(cr); 1544 1545 /* 1546 * If the request has a callback, invoke it. 1547 */ 1548 if (cr->cr_complete != NULL) { 1549 cr->cr_complete(cr); 1550 continue; 1551 } 1552 1553 /* 1554 * If someone is sleeping on this request, wake them up. 1555 */ 1556 if (cr->cr_flags & CISS_REQ_SLEEP) { 1557 cr->cr_flags &= ~CISS_REQ_SLEEP; 1558 wakeup(cr); 1559 continue; 1560 } 1561 1562 /* 1563 * If someone is polling this request for completion, signal. 1564 */ 1565 if (cr->cr_flags & CISS_REQ_POLL) { 1566 cr->cr_flags &= ~CISS_REQ_POLL; 1567 continue; 1568 } 1569 1570 /* 1571 * Give up and throw the request back on the free queue. This 1572 * should never happen; resources will probably be lost. 1573 */ 1574 ciss_printf(sc, "WARNING: completed command with no submitter\n"); 1575 ciss_enqueue_free(cr); 1576 } 1577 } 1578 1579 /************************************************************************ 1580 * Report on the completion status of a request, and pass back SCSI 1581 * and command status values. 1582 */ 1583 static int 1584 ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status) 1585 { 1586 struct ciss_command *cc; 1587 struct ciss_error_info *ce; 1588 1589 debug_called(2); 1590 1591 cc = CISS_FIND_COMMAND(cr); 1592 ce = (struct ciss_error_info *)&(cc->sg[0]); 1593 1594 /* 1595 * We don't consider data under/overrun an error for the Report 1596 * Logical/Physical LUNs commands. 1597 */ 1598 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) && 1599 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || 1600 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS))) { 1601 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR; 1602 debug(2, "ignoring irrelevant under/overrun error"); 1603 } 1604 1605 /* 1606 * Check the command's error bit, if clear, there's no status and 1607 * everything is OK. 1608 */ 1609 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) { 1610 if (scsi_status != NULL) 1611 *scsi_status = SCSI_STATUS_OK; 1612 if (command_status != NULL) 1613 *command_status = CISS_CMD_STATUS_SUCCESS; 1614 return(0); 1615 } else { 1616 if (command_status != NULL) 1617 *command_status = ce->command_status; 1618 if (scsi_status != NULL) { 1619 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) { 1620 *scsi_status = ce->scsi_status; 1621 } else { 1622 *scsi_status = -1; 1623 } 1624 } 1625 if (bootverbose) 1626 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n", 1627 ce->command_status, ciss_name_command_status(ce->command_status), 1628 ce->scsi_status); 1629 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) { 1630 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x\n", 1631 ce->additional_error_info.invalid_command.offense_size, 1632 ce->additional_error_info.invalid_command.offense_offset, 1633 ce->additional_error_info.invalid_command.offense_value); 1634 } 1635 } 1636 return(1); 1637 } 1638 1639 /************************************************************************ 1640 * Issue a request and don't return until it's completed. 1641 * 1642 * Depending on adapter status, we may poll or sleep waiting for 1643 * completion. 1644 */ 1645 static int 1646 ciss_synch_request(struct ciss_request *cr, int timeout) 1647 { 1648 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) { 1649 return(ciss_wait_request(cr, timeout)); 1650 } else { 1651 return(ciss_poll_request(cr, timeout)); 1652 } 1653 } 1654 1655 /************************************************************************ 1656 * Issue a request and poll for completion. 1657 * 1658 * Timeout in milliseconds. 1659 */ 1660 static int 1661 ciss_poll_request(struct ciss_request *cr, int timeout) 1662 { 1663 int error; 1664 1665 debug_called(2); 1666 1667 cr->cr_flags |= CISS_REQ_POLL; 1668 if ((error = ciss_start(cr)) != 0) 1669 return(error); 1670 1671 do { 1672 ciss_done(cr->cr_sc); 1673 if (!(cr->cr_flags & CISS_REQ_POLL)) 1674 return(0); 1675 DELAY(1000); 1676 } while (timeout-- >= 0); 1677 return(EWOULDBLOCK); 1678 } 1679 1680 /************************************************************************ 1681 * Issue a request and sleep waiting for completion. 1682 * 1683 * Timeout in milliseconds. Note that a spurious wakeup will reset 1684 * the timeout. 1685 */ 1686 static int 1687 ciss_wait_request(struct ciss_request *cr, int timeout) 1688 { 1689 int s, error; 1690 1691 debug_called(2); 1692 1693 cr->cr_flags |= CISS_REQ_SLEEP; 1694 if ((error = ciss_start(cr)) != 0) 1695 return(error); 1696 1697 s = splcam(); 1698 while (cr->cr_flags & CISS_REQ_SLEEP) { 1699 error = tsleep(cr, PCATCH, "cissREQ", (timeout * hz) / 1000); 1700 /* 1701 * On wakeup or interruption due to restartable activity, go 1702 * back and check to see if we're done. 1703 */ 1704 if ((error == 0) || (error == ERESTART)) { 1705 error = 0; 1706 continue; 1707 } 1708 /* 1709 * Timeout, interrupted system call, etc. 1710 */ 1711 break; 1712 } 1713 splx(s); 1714 return(error); 1715 } 1716 1717 #if 0 1718 /************************************************************************ 1719 * Abort a request. Note that a potential exists here to race the 1720 * request being completed; the caller must deal with this. 1721 */ 1722 static int 1723 ciss_abort_request(struct ciss_request *ar) 1724 { 1725 struct ciss_request *cr; 1726 struct ciss_command *cc; 1727 struct ciss_message_cdb *cmc; 1728 int error; 1729 1730 debug_called(1); 1731 1732 /* get a request */ 1733 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0) 1734 return(error); 1735 1736 /* build the abort command */ 1737 cc = CISS_FIND_COMMAND(cr); 1738 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */ 1739 cc->header.address.physical.target = 0; 1740 cc->header.address.physical.bus = 0; 1741 cc->cdb.cdb_length = sizeof(*cmc); 1742 cc->cdb.type = CISS_CDB_TYPE_MESSAGE; 1743 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1744 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 1745 cc->cdb.timeout = 30; 1746 1747 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]); 1748 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT; 1749 cmc->type = CISS_MESSAGE_ABORT_TASK; 1750 cmc->abort_tag = ar->cr_tag; /* endianness?? */ 1751 1752 /* 1753 * Send the request and wait for a response. If we believe we 1754 * aborted the request OK, clear the flag that indicates it's 1755 * running. 1756 */ 1757 error = ciss_synch_request(cr, 35 * 1000); 1758 if (!error) 1759 error = ciss_report_request(cr, NULL, NULL); 1760 ciss_release_request(cr); 1761 1762 return(error); 1763 } 1764 #endif 1765 1766 1767 /************************************************************************ 1768 * Fetch and initialise a request 1769 */ 1770 static int 1771 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp) 1772 { 1773 struct ciss_request *cr; 1774 1775 debug_called(2); 1776 1777 /* 1778 * Get a request and clean it up. 1779 */ 1780 if ((cr = ciss_dequeue_free(sc)) == NULL) 1781 return(ENOMEM); 1782 1783 cr->cr_data = NULL; 1784 cr->cr_flags = 0; 1785 cr->cr_complete = NULL; 1786 cr->cr_private = NULL; 1787 1788 ciss_preen_command(cr); 1789 *crp = cr; 1790 return(0); 1791 } 1792 1793 static void 1794 ciss_preen_command(struct ciss_request *cr) 1795 { 1796 struct ciss_command *cc; 1797 u_int32_t cmdphys; 1798 1799 /* 1800 * Clean up the command structure. 1801 * 1802 * Note that we set up the error_info structure here, since the 1803 * length can be overwritten by any command. 1804 */ 1805 cc = CISS_FIND_COMMAND(cr); 1806 cc->header.sg_in_list = 0; /* kinda inefficient this way */ 1807 cc->header.sg_total = 0; 1808 cc->header.host_tag = cr->cr_tag << 2; 1809 cc->header.host_tag_zeroes = 0; 1810 cmdphys = CISS_FIND_COMMANDPHYS(cr); 1811 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command); 1812 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command); 1813 1814 } 1815 1816 /************************************************************************ 1817 * Release a request to the free list. 1818 */ 1819 static void 1820 ciss_release_request(struct ciss_request *cr) 1821 { 1822 struct ciss_softc *sc; 1823 1824 debug_called(2); 1825 1826 sc = cr->cr_sc; 1827 1828 /* release the request to the free queue */ 1829 ciss_requeue_free(cr); 1830 } 1831 1832 /************************************************************************ 1833 * Allocate a request that will be used to send a BMIC command. Do some 1834 * of the common setup here to avoid duplicating it everywhere else. 1835 */ 1836 static int 1837 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 1838 int opcode, void **bufp, size_t bufsize) 1839 { 1840 struct ciss_request *cr; 1841 struct ciss_command *cc; 1842 struct ciss_bmic_cdb *cbc; 1843 void *buf; 1844 int error; 1845 int dataout; 1846 1847 debug_called(2); 1848 1849 cr = NULL; 1850 buf = NULL; 1851 1852 /* 1853 * Get a request. 1854 */ 1855 if ((error = ciss_get_request(sc, &cr)) != 0) 1856 goto out; 1857 1858 /* 1859 * Allocate data storage if requested, determine the data direction. 1860 */ 1861 dataout = 0; 1862 if ((bufsize > 0) && (bufp != NULL)) { 1863 if (*bufp == NULL) { 1864 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 1865 error = ENOMEM; 1866 goto out; 1867 } 1868 } else { 1869 buf = *bufp; 1870 dataout = 1; /* we are given a buffer, so we are writing */ 1871 } 1872 } 1873 1874 /* 1875 * Build a CISS BMIC command to get the logical drive ID. 1876 */ 1877 cr->cr_data = buf; 1878 cr->cr_length = bufsize; 1879 if (!dataout) 1880 cr->cr_flags = CISS_REQ_DATAIN; 1881 1882 cc = CISS_FIND_COMMAND(cr); 1883 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 1884 cc->header.address.physical.bus = 0; 1885 cc->header.address.physical.target = 0; 1886 cc->cdb.cdb_length = sizeof(*cbc); 1887 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1888 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1889 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ; 1890 cc->cdb.timeout = 0; 1891 1892 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1893 bzero(cbc, sizeof(*cbc)); 1894 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ; 1895 cbc->bmic_opcode = opcode; 1896 cbc->size = htons((u_int16_t)bufsize); 1897 1898 out: 1899 if (error) { 1900 if (cr != NULL) 1901 ciss_release_request(cr); 1902 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 1903 free(buf, CISS_MALLOC_CLASS); 1904 } else { 1905 *crp = cr; 1906 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 1907 *bufp = buf; 1908 } 1909 return(error); 1910 } 1911 1912 /************************************************************************ 1913 * Handle a command passed in from userspace. 1914 */ 1915 static int 1916 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc) 1917 { 1918 struct ciss_request *cr; 1919 struct ciss_command *cc; 1920 struct ciss_error_info *ce; 1921 int error = 0; 1922 1923 debug_called(1); 1924 1925 cr = NULL; 1926 1927 /* 1928 * Get a request. 1929 */ 1930 if ((error = ciss_get_request(sc, &cr)) != 0) 1931 goto out; 1932 cc = CISS_FIND_COMMAND(cr); 1933 1934 /* 1935 * Allocate an in-kernel databuffer if required, copy in user data. 1936 */ 1937 cr->cr_length = ioc->buf_size; 1938 if (ioc->buf_size > 0) { 1939 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK)) == NULL) { 1940 error = ENOMEM; 1941 goto out; 1942 } 1943 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) { 1944 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 1945 goto out; 1946 } 1947 } 1948 1949 /* 1950 * Build the request based on the user command. 1951 */ 1952 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address)); 1953 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb)); 1954 1955 /* XXX anything else to populate here? */ 1956 1957 /* 1958 * Run the command. 1959 */ 1960 if ((error = ciss_synch_request(cr, 60 * 1000))) { 1961 debug(0, "request failed - %d", error); 1962 goto out; 1963 } 1964 1965 /* 1966 * Check to see if the command succeeded. 1967 */ 1968 ce = (struct ciss_error_info *)&(cc->sg[0]); 1969 if (ciss_report_request(cr, NULL, NULL) == 0) 1970 bzero(ce, sizeof(*ce)); 1971 else 1972 error = EIO; 1973 1974 /* 1975 * Copy the results back to the user. 1976 */ 1977 bcopy(ce, &ioc->error_info, sizeof(*ce)); 1978 if ((ioc->buf_size > 0) && 1979 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) { 1980 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 1981 goto out; 1982 } 1983 1984 /* done OK */ 1985 error = 0; 1986 1987 out: 1988 if ((cr != NULL) && (cr->cr_data != NULL)) 1989 free(cr->cr_data, CISS_MALLOC_CLASS); 1990 if (cr != NULL) 1991 ciss_release_request(cr); 1992 return(error); 1993 } 1994 1995 /************************************************************************ 1996 * Map a request into bus-visible space, initialise the scatter/gather 1997 * list. 1998 */ 1999 static int 2000 ciss_map_request(struct ciss_request *cr) 2001 { 2002 struct ciss_softc *sc; 2003 int error = 0; 2004 2005 debug_called(2); 2006 2007 sc = cr->cr_sc; 2008 2009 /* check that mapping is necessary */ 2010 if (cr->cr_flags & CISS_REQ_MAPPED) 2011 return(0); 2012 2013 cr->cr_flags |= CISS_REQ_MAPPED; 2014 2015 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2016 BUS_DMASYNC_PREWRITE); 2017 2018 if (cr->cr_data != NULL) { 2019 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, 2020 cr->cr_data, cr->cr_length, 2021 ciss_request_map_helper, cr, 0); 2022 if (error != 0) 2023 return (error); 2024 } else { 2025 /* 2026 * Post the command to the adapter. 2027 */ 2028 ciss_enqueue_busy(cr); 2029 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2030 } 2031 2032 return(0); 2033 } 2034 2035 static void 2036 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2037 { 2038 struct ciss_command *cc; 2039 struct ciss_request *cr; 2040 struct ciss_softc *sc; 2041 int i; 2042 2043 debug_called(2); 2044 2045 cr = (struct ciss_request *)arg; 2046 sc = cr->cr_sc; 2047 cc = CISS_FIND_COMMAND(cr); 2048 2049 for (i = 0; i < nseg; i++) { 2050 cc->sg[i].address = segs[i].ds_addr; 2051 cc->sg[i].length = segs[i].ds_len; 2052 cc->sg[i].extension = 0; 2053 } 2054 /* we leave the s/g table entirely within the command */ 2055 cc->header.sg_in_list = nseg; 2056 cc->header.sg_total = nseg; 2057 2058 if (cr->cr_flags & CISS_REQ_DATAIN) 2059 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD); 2060 if (cr->cr_flags & CISS_REQ_DATAOUT) 2061 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE); 2062 2063 /* 2064 * Post the command to the adapter. 2065 */ 2066 ciss_enqueue_busy(cr); 2067 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2068 } 2069 2070 /************************************************************************ 2071 * Unmap a request from bus-visible space. 2072 */ 2073 static void 2074 ciss_unmap_request(struct ciss_request *cr) 2075 { 2076 struct ciss_softc *sc; 2077 2078 debug_called(2); 2079 2080 sc = cr->cr_sc; 2081 2082 /* check that unmapping is necessary */ 2083 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0) 2084 return; 2085 2086 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2087 BUS_DMASYNC_POSTWRITE); 2088 2089 if (cr->cr_data == NULL) 2090 goto out; 2091 2092 if (cr->cr_flags & CISS_REQ_DATAIN) 2093 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD); 2094 if (cr->cr_flags & CISS_REQ_DATAOUT) 2095 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE); 2096 2097 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap); 2098 out: 2099 cr->cr_flags &= ~CISS_REQ_MAPPED; 2100 } 2101 2102 /************************************************************************ 2103 * Attach the driver to CAM. 2104 * 2105 * We put all the logical drives on a single SCSI bus. 2106 */ 2107 static int 2108 ciss_cam_init(struct ciss_softc *sc) 2109 { 2110 2111 debug_called(1); 2112 2113 /* 2114 * Allocate a devq. We can reuse this for the masked physical 2115 * devices if we decide to export these as well. 2116 */ 2117 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) { 2118 ciss_printf(sc, "can't allocate CAM SIM queue\n"); 2119 return(ENOMEM); 2120 } 2121 2122 /* 2123 * Create a SIM. 2124 */ 2125 if ((sc->ciss_cam_sim = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, "ciss", sc, 2126 device_get_unit(sc->ciss_dev), 2127 sc->ciss_max_requests - 2, 2128 1, 2129 sc->ciss_cam_devq)) == NULL) { 2130 ciss_printf(sc, "can't allocate CAM SIM\n"); 2131 return(ENOMEM); 2132 } 2133 2134 /* 2135 * Register bus 0 (the 'logical drives' bus) with this SIM. 2136 */ 2137 if (xpt_bus_register(sc->ciss_cam_sim, 0) != 0) { 2138 ciss_printf(sc, "can't register SCSI bus 0\n"); 2139 return(ENXIO); 2140 } 2141 2142 /* 2143 * Initiate a rescan of the bus. 2144 */ 2145 ciss_cam_rescan_all(sc); 2146 2147 return(0); 2148 } 2149 2150 /************************************************************************ 2151 * Initiate a rescan of the 'logical devices' SIM 2152 */ 2153 static void 2154 ciss_cam_rescan_target(struct ciss_softc *sc, int target) 2155 { 2156 union ccb *ccb; 2157 2158 debug_called(1); 2159 2160 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 2161 ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); 2162 return; 2163 } 2164 2165 if (xpt_create_path(&sc->ciss_cam_path, xpt_periph, cam_sim_path(sc->ciss_cam_sim), target, 0) 2166 != CAM_REQ_CMP) { 2167 ciss_printf(sc, "rescan failed (can't create path)\n"); 2168 return; 2169 } 2170 2171 xpt_setup_ccb(&ccb->ccb_h, sc->ciss_cam_path, 5/*priority (low)*/); 2172 ccb->ccb_h.func_code = XPT_SCAN_BUS; 2173 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback; 2174 ccb->crcn.flags = CAM_FLAG_NONE; 2175 xpt_action(ccb); 2176 2177 /* scan is now in progress */ 2178 } 2179 2180 static void 2181 ciss_cam_rescan_all(struct ciss_softc *sc) 2182 { 2183 ciss_cam_rescan_target(sc, 0); 2184 } 2185 2186 static void 2187 ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2188 { 2189 xpt_free_path(ccb->ccb_h.path); 2190 free(ccb, M_TEMP); 2191 } 2192 2193 /************************************************************************ 2194 * Handle requests coming from CAM 2195 */ 2196 static void 2197 ciss_cam_action(struct cam_sim *sim, union ccb *ccb) 2198 { 2199 struct ciss_softc *sc; 2200 struct ccb_scsiio *csio; 2201 int target; 2202 2203 sc = cam_sim_softc(sim); 2204 csio = (struct ccb_scsiio *)&ccb->csio; 2205 target = csio->ccb_h.target_id; 2206 2207 switch (ccb->ccb_h.func_code) { 2208 2209 /* perform SCSI I/O */ 2210 case XPT_SCSI_IO: 2211 if (!ciss_cam_action_io(sim, csio)) 2212 return; 2213 break; 2214 2215 /* perform geometry calculations */ 2216 case XPT_CALC_GEOMETRY: 2217 { 2218 struct ccb_calc_geometry *ccg = &ccb->ccg; 2219 struct ciss_ldrive *ld = &sc->ciss_logical[target]; 2220 2221 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2222 2223 /* 2224 * Use the cached geometry settings unless the fault tolerance 2225 * is invalid. 2226 */ 2227 if (ld->cl_geometry.fault_tolerance == 0xFF) { 2228 u_int32_t secs_per_cylinder; 2229 2230 ccg->heads = 255; 2231 ccg->secs_per_track = 32; 2232 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2233 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2234 } else { 2235 ccg->heads = ld->cl_geometry.heads; 2236 ccg->secs_per_track = ld->cl_geometry.sectors; 2237 ccg->cylinders = ntohs(ld->cl_geometry.cylinders); 2238 } 2239 ccb->ccb_h.status = CAM_REQ_CMP; 2240 break; 2241 } 2242 2243 /* handle path attribute inquiry */ 2244 case XPT_PATH_INQ: 2245 { 2246 struct ccb_pathinq *cpi = &ccb->cpi; 2247 2248 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2249 2250 cpi->version_num = 1; 2251 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */ 2252 cpi->target_sprt = 0; 2253 cpi->hba_misc = 0; 2254 cpi->max_target = CISS_MAX_LOGICAL; 2255 cpi->max_lun = 0; /* 'logical drive' channel only */ 2256 cpi->initiator_id = CISS_MAX_LOGICAL; 2257 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2258 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN); 2259 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2260 cpi->unit_number = cam_sim_unit(sim); 2261 cpi->bus_id = cam_sim_bus(sim); 2262 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2263 ccb->ccb_h.status = CAM_REQ_CMP; 2264 break; 2265 } 2266 2267 case XPT_GET_TRAN_SETTINGS: 2268 { 2269 struct ccb_trans_settings *cts = &ccb->cts; 2270 int bus, target; 2271 2272 bus = cam_sim_bus(sim); 2273 target = cts->ccb_h.target_id; 2274 2275 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2276 cts->valid = 0; 2277 2278 /* disconnect always OK */ 2279 cts->flags |= CCB_TRANS_DISC_ENB; 2280 cts->valid |= CCB_TRANS_DISC_VALID; 2281 2282 cts->ccb_h.status = CAM_REQ_CMP; 2283 break; 2284 } 2285 2286 default: /* we can't do this */ 2287 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2288 ccb->ccb_h.status = CAM_REQ_INVALID; 2289 break; 2290 } 2291 2292 xpt_done(ccb); 2293 } 2294 2295 /************************************************************************ 2296 * Handle a CAM SCSI I/O request. 2297 */ 2298 static int 2299 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2300 { 2301 struct ciss_softc *sc; 2302 int bus, target; 2303 struct ciss_request *cr; 2304 struct ciss_command *cc; 2305 int error; 2306 2307 sc = cam_sim_softc(sim); 2308 bus = cam_sim_bus(sim); 2309 target = csio->ccb_h.target_id; 2310 2311 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2312 2313 /* check for I/O attempt to nonexistent device */ 2314 if ((bus != 0) || 2315 (target >= CISS_MAX_LOGICAL)) { 2316 debug(3, " device does not exist"); 2317 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2318 } 2319 2320 /* firmware does not support commands > 10 bytes */ 2321 if (csio->cdb_len > 12/*CISS_CDB_BUFFER_SIZE*/) { 2322 debug(3, " command too large (%d > %d)", csio->cdb_len, CISS_CDB_BUFFER_SIZE); 2323 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2324 } 2325 2326 /* check that the CDB pointer is not to a physical address */ 2327 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2328 debug(3, " CDB pointer is to physical address"); 2329 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2330 } 2331 2332 /* if there is data transfer, it must be to/from a virtual address */ 2333 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2334 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2335 debug(3, " data pointer is to physical address"); 2336 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2337 } 2338 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2339 debug(3, " data has premature s/g setup"); 2340 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2341 } 2342 } 2343 2344 /* abandon aborted ccbs or those that have failed validation */ 2345 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2346 debug(3, "abandoning CCB due to abort/validation failure"); 2347 return(EINVAL); 2348 } 2349 2350 /* handle emulation of some SCSI commands ourself */ 2351 if (ciss_cam_emulate(sc, csio)) 2352 return(0); 2353 2354 /* 2355 * Get a request to manage this command. If we can't, return the 2356 * ccb, freeze the queue and flag so that we unfreeze it when a 2357 * request completes. 2358 */ 2359 if ((error = ciss_get_request(sc, &cr)) != 0) { 2360 xpt_freeze_simq(sc->ciss_cam_sim, 1); 2361 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2362 return(error); 2363 } 2364 2365 /* 2366 * Build the command. 2367 */ 2368 cc = CISS_FIND_COMMAND(cr); 2369 cr->cr_data = csio->data_ptr; 2370 cr->cr_length = csio->dxfer_len; 2371 cr->cr_complete = ciss_cam_complete; 2372 cr->cr_private = csio; 2373 2374 cc->header.address.logical.mode = CISS_HDR_ADDRESS_MODE_LOGICAL; 2375 cc->header.address.logical.lun = target; 2376 cc->cdb.cdb_length = csio->cdb_len; 2377 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2378 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */ 2379 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2380 cr->cr_flags = CISS_REQ_DATAOUT; 2381 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; 2382 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 2383 cr->cr_flags = CISS_REQ_DATAIN; 2384 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2385 } else { 2386 cr->cr_flags = 0; 2387 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2388 } 2389 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1; 2390 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2391 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len); 2392 } else { 2393 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len); 2394 } 2395 2396 /* 2397 * Submit the request to the adapter. 2398 * 2399 * Note that this may fail if we're unable to map the request (and 2400 * if we ever learn a transport layer other than simple, may fail 2401 * if the adapter rejects the command). 2402 */ 2403 if ((error = ciss_start(cr)) != 0) { 2404 xpt_freeze_simq(sc->ciss_cam_sim, 1); 2405 if (error == EINPROGRESS) { 2406 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2407 error = 0; 2408 } else { 2409 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2410 ciss_release_request(cr); 2411 } 2412 return(error); 2413 } 2414 2415 return(0); 2416 } 2417 2418 /************************************************************************ 2419 * Emulate SCSI commands the adapter doesn't handle as we might like. 2420 */ 2421 static int 2422 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio) 2423 { 2424 int target; 2425 u_int8_t opcode; 2426 2427 2428 target = csio->ccb_h.target_id; 2429 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? 2430 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; 2431 2432 /* 2433 * Handle requests for volumes that don't exist. A selection timeout 2434 * is slightly better than an illegal request. Other errors might be 2435 * better. 2436 */ 2437 if (sc->ciss_logical[target].cl_status == CISS_LD_NONEXISTENT) { 2438 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2439 xpt_done((union ccb *)csio); 2440 return(1); 2441 } 2442 2443 /* 2444 * Handle requests for volumes that exist but are offline. 2445 * 2446 * I/O operations should fail, everything else should work. 2447 */ 2448 if (sc->ciss_logical[target].cl_status == CISS_LD_OFFLINE) { 2449 switch(opcode) { 2450 case READ_6: 2451 case READ_10: 2452 case READ_12: 2453 case WRITE_6: 2454 case WRITE_10: 2455 case WRITE_12: 2456 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2457 xpt_done((union ccb *)csio); 2458 return(1); 2459 } 2460 } 2461 2462 2463 /* if we have to fake Synchronise Cache */ 2464 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) { 2465 2466 /* 2467 * If this is a Synchronise Cache command, typically issued when 2468 * a device is closed, flush the adapter and complete now. 2469 */ 2470 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2471 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) { 2472 ciss_flush_adapter(sc); 2473 csio->ccb_h.status = CAM_REQ_CMP; 2474 xpt_done((union ccb *)csio); 2475 return(1); 2476 } 2477 } 2478 2479 return(0); 2480 } 2481 2482 /************************************************************************ 2483 * Check for possibly-completed commands. 2484 */ 2485 static void 2486 ciss_cam_poll(struct cam_sim *sim) 2487 { 2488 struct ciss_softc *sc = cam_sim_softc(sim); 2489 2490 debug_called(2); 2491 2492 ciss_done(sc); 2493 } 2494 2495 /************************************************************************ 2496 * Handle completion of a command - pass results back through the CCB 2497 */ 2498 static void 2499 ciss_cam_complete(struct ciss_request *cr) 2500 { 2501 struct ciss_softc *sc; 2502 struct ciss_command *cc; 2503 struct ciss_error_info *ce; 2504 struct ccb_scsiio *csio; 2505 int scsi_status; 2506 int command_status; 2507 2508 debug_called(2); 2509 2510 sc = cr->cr_sc; 2511 cc = CISS_FIND_COMMAND(cr); 2512 ce = (struct ciss_error_info *)&(cc->sg[0]); 2513 csio = (struct ccb_scsiio *)cr->cr_private; 2514 2515 /* 2516 * Extract status values from request. 2517 */ 2518 ciss_report_request(cr, &command_status, &scsi_status); 2519 csio->scsi_status = scsi_status; 2520 2521 /* 2522 * Handle specific SCSI status values. 2523 */ 2524 switch(scsi_status) { 2525 /* no status due to adapter error */ 2526 case -1: 2527 debug(0, "adapter error"); 2528 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2529 break; 2530 2531 /* no status due to command completed OK */ 2532 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */ 2533 debug(2, "SCSI_STATUS_OK"); 2534 csio->ccb_h.status = CAM_REQ_CMP; 2535 break; 2536 2537 /* check condition, sense data included */ 2538 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */ 2539 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d", 2540 ce->sense_length, ce->residual_count); 2541 bzero(&csio->sense_data, SSD_FULL_SIZE); 2542 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); 2543 csio->sense_len = ce->sense_length; 2544 csio->resid = ce->residual_count; 2545 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 2546 #ifdef CISS_DEBUG 2547 { 2548 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0]; 2549 debug(0, "sense key %x", sns->flags & SSD_KEY); 2550 } 2551 #endif 2552 break; 2553 2554 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */ 2555 debug(0, "SCSI_STATUS_BUSY"); 2556 csio->ccb_h.status = CAM_SCSI_BUSY; 2557 break; 2558 2559 default: 2560 debug(0, "unknown status 0x%x", csio->scsi_status); 2561 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2562 break; 2563 } 2564 2565 /* handle post-command fixup */ 2566 ciss_cam_complete_fixup(sc, csio); 2567 2568 /* tell CAM we're ready for more commands */ 2569 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2570 2571 xpt_done((union ccb *)csio); 2572 ciss_release_request(cr); 2573 } 2574 2575 /******************************************************************************** 2576 * Fix up the result of some commands here. 2577 */ 2578 static void 2579 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio) 2580 { 2581 struct scsi_inquiry_data *inq; 2582 struct ciss_ldrive *cl; 2583 int target; 2584 2585 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2586 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) { 2587 2588 inq = (struct scsi_inquiry_data *)csio->data_ptr; 2589 target = csio->ccb_h.target_id; 2590 cl = &sc->ciss_logical[target]; 2591 2592 padstr(inq->vendor, "COMPAQ", 8); 2593 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); 2594 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); 2595 } 2596 } 2597 2598 2599 /******************************************************************************** 2600 * Find a peripheral attached at (target) 2601 */ 2602 static struct cam_periph * 2603 ciss_find_periph(struct ciss_softc *sc, int target) 2604 { 2605 struct cam_periph *periph; 2606 struct cam_path *path; 2607 int status; 2608 2609 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim), target, 0); 2610 if (status == CAM_REQ_CMP) { 2611 periph = cam_periph_find(path, NULL); 2612 xpt_free_path(path); 2613 } else { 2614 periph = NULL; 2615 } 2616 return(periph); 2617 } 2618 2619 /******************************************************************************** 2620 * Name the device at (target) 2621 * 2622 * XXX is this strictly correct? 2623 */ 2624 static int 2625 ciss_name_device(struct ciss_softc *sc, int target) 2626 { 2627 struct cam_periph *periph; 2628 2629 if ((periph = ciss_find_periph(sc, target)) != NULL) { 2630 sprintf(sc->ciss_logical[target].cl_name, "%s%d", periph->periph_name, periph->unit_number); 2631 return(0); 2632 } 2633 sc->ciss_logical[target].cl_name[0] = 0; 2634 return(ENOENT); 2635 } 2636 2637 /************************************************************************ 2638 * Periodic status monitoring. 2639 */ 2640 static void 2641 ciss_periodic(void *arg) 2642 { 2643 struct ciss_softc *sc; 2644 2645 debug_called(1); 2646 2647 sc = (struct ciss_softc *)arg; 2648 2649 /* 2650 * Check the adapter heartbeat. 2651 */ 2652 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) { 2653 sc->ciss_heart_attack++; 2654 debug(0, "adapter heart attack in progress 0x%x/%d", 2655 sc->ciss_heartbeat, sc->ciss_heart_attack); 2656 if (sc->ciss_heart_attack == 3) { 2657 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n"); 2658 /* XXX should reset adapter here */ 2659 } 2660 } else { 2661 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; 2662 sc->ciss_heart_attack = 0; 2663 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); 2664 } 2665 2666 /* 2667 * If the notify event request has died for some reason, or has 2668 * not started yet, restart it. 2669 */ 2670 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) { 2671 debug(0, "(re)starting Event Notify chain"); 2672 ciss_notify_event(sc); 2673 } 2674 2675 /* 2676 * Reschedule. 2677 */ 2678 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) 2679 sc->ciss_periodic = timeout(ciss_periodic, sc, CISS_HEARTBEAT_RATE * hz); 2680 } 2681 2682 /************************************************************************ 2683 * Request a notification response from the adapter. 2684 * 2685 * If (cr) is NULL, this is the first request of the adapter, so 2686 * reset the adapter's message pointer and start with the oldest 2687 * message available. 2688 */ 2689 static void 2690 ciss_notify_event(struct ciss_softc *sc) 2691 { 2692 struct ciss_request *cr; 2693 struct ciss_command *cc; 2694 struct ciss_notify_cdb *cnc; 2695 int error; 2696 2697 debug_called(1); 2698 2699 cr = sc->ciss_periodic_notify; 2700 2701 /* get a request if we don't already have one */ 2702 if (cr == NULL) { 2703 if ((error = ciss_get_request(sc, &cr)) != 0) { 2704 debug(0, "can't get notify event request"); 2705 goto out; 2706 } 2707 sc->ciss_periodic_notify = cr; 2708 cr->cr_complete = ciss_notify_complete; 2709 debug(1, "acquired request %d", cr->cr_tag); 2710 } 2711 2712 /* 2713 * Get a databuffer if we don't already have one, note that the 2714 * adapter command wants a larger buffer than the actual 2715 * structure. 2716 */ 2717 if (cr->cr_data == NULL) { 2718 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 2719 debug(0, "can't get notify event request buffer"); 2720 error = ENOMEM; 2721 goto out; 2722 } 2723 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 2724 } 2725 2726 /* re-setup the request's command (since we never release it) XXX overkill*/ 2727 ciss_preen_command(cr); 2728 2729 /* (re)build the notify event command */ 2730 cc = CISS_FIND_COMMAND(cr); 2731 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 2732 cc->header.address.physical.bus = 0; 2733 cc->header.address.physical.target = 0; 2734 2735 cc->cdb.cdb_length = sizeof(*cnc); 2736 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2737 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2738 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2739 cc->cdb.timeout = 0; /* no timeout, we hope */ 2740 2741 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 2742 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE); 2743 cnc->opcode = CISS_OPCODE_READ; 2744 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT; 2745 cnc->timeout = 0; /* no timeout, we hope */ 2746 cnc->synchronous = 0; 2747 cnc->ordered = 0; 2748 cnc->seek_to_oldest = 0; 2749 cnc->new_only = 0; 2750 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 2751 2752 /* submit the request */ 2753 error = ciss_start(cr); 2754 2755 out: 2756 if (error) { 2757 if (cr != NULL) { 2758 if (cr->cr_data != NULL) 2759 free(cr->cr_data, CISS_MALLOC_CLASS); 2760 ciss_release_request(cr); 2761 } 2762 sc->ciss_periodic_notify = NULL; 2763 debug(0, "can't submit notify event request"); 2764 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 2765 } else { 2766 debug(1, "notify event submitted"); 2767 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK; 2768 } 2769 } 2770 2771 static void 2772 ciss_notify_complete(struct ciss_request *cr) 2773 { 2774 struct ciss_command *cc; 2775 struct ciss_notify *cn; 2776 struct ciss_softc *sc; 2777 int scsi_status; 2778 int command_status; 2779 2780 debug_called(1); 2781 2782 cc = CISS_FIND_COMMAND(cr); 2783 cn = (struct ciss_notify *)cr->cr_data; 2784 sc = cr->cr_sc; 2785 2786 /* 2787 * Report request results, decode status. 2788 */ 2789 ciss_report_request(cr, &command_status, &scsi_status); 2790 2791 /* 2792 * Abort the chain on a fatal error. 2793 * 2794 * XXX which of these are actually errors? 2795 */ 2796 if ((command_status != CISS_CMD_STATUS_SUCCESS) && 2797 (command_status != CISS_CMD_STATUS_TARGET_STATUS) && 2798 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */ 2799 ciss_printf(sc, "fatal error in Notify Event request (%s)\n", 2800 ciss_name_command_status(command_status)); 2801 ciss_release_request(cr); 2802 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 2803 return; 2804 } 2805 2806 /* 2807 * If the adapter gave us a text message, print it. 2808 */ 2809 if (cn->message[0] != 0) 2810 ciss_printf(sc, "*** %.80s\n", cn->message); 2811 2812 debug(0, "notify event class %d subclass %d detail %d", 2813 cn->class, cn->subclass, cn->detail); 2814 2815 /* 2816 * If there's room, save the event for a user-level tool. 2817 */ 2818 if (((sc->ciss_notify_head + 1) % CISS_MAX_EVENTS) != sc->ciss_notify_tail) { 2819 sc->ciss_notify[sc->ciss_notify_head] = *cn; 2820 sc->ciss_notify_head = (sc->ciss_notify_head + 1) % CISS_MAX_EVENTS; 2821 } 2822 2823 /* 2824 * Some events are directly of interest to us. 2825 */ 2826 switch (cn->class) { 2827 case CISS_NOTIFY_LOGICAL: 2828 ciss_notify_logical(sc, cn); 2829 break; 2830 case CISS_NOTIFY_PHYSICAL: 2831 ciss_notify_physical(sc, cn); 2832 break; 2833 } 2834 2835 /* 2836 * If the response indicates that the notifier has been aborted, 2837 * release the notifier command. 2838 */ 2839 if ((cn->class == CISS_NOTIFY_NOTIFIER) && 2840 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) && 2841 (cn->detail == 1)) { 2842 debug(0, "notifier exiting"); 2843 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 2844 ciss_release_request(cr); 2845 sc->ciss_periodic_notify = NULL; 2846 wakeup(&sc->ciss_periodic_notify); 2847 } 2848 2849 /* 2850 * Send a new notify event command, if we're not aborting. 2851 */ 2852 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) { 2853 ciss_notify_event(sc); 2854 } 2855 } 2856 2857 /************************************************************************ 2858 * Abort the Notify Event chain. 2859 * 2860 * Note that we can't just abort the command in progress; we have to 2861 * explicitly issue an Abort Notify Event command in order for the 2862 * adapter to clean up correctly. 2863 * 2864 * If we are called with CISS_FLAG_ABORTING set in the adapter softc, 2865 * the chain will not restart itself. 2866 */ 2867 static int 2868 ciss_notify_abort(struct ciss_softc *sc) 2869 { 2870 struct ciss_request *cr; 2871 struct ciss_command *cc; 2872 struct ciss_notify_cdb *cnc; 2873 int error, s, command_status, scsi_status; 2874 2875 debug_called(1); 2876 2877 cr = NULL; 2878 error = 0; 2879 2880 /* verify that there's an outstanding command */ 2881 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 2882 goto out; 2883 2884 /* get a command to issue the abort with */ 2885 if ((error = ciss_get_request(sc, &cr))) 2886 goto out; 2887 2888 /* get a buffer for the result */ 2889 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 2890 debug(0, "can't get notify event request buffer"); 2891 error = ENOMEM; 2892 goto out; 2893 } 2894 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 2895 2896 /* build the CDB */ 2897 cc = CISS_FIND_COMMAND(cr); 2898 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 2899 cc->header.address.physical.bus = 0; 2900 cc->header.address.physical.target = 0; 2901 cc->cdb.cdb_length = sizeof(*cnc); 2902 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2903 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2904 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2905 cc->cdb.timeout = 0; /* no timeout, we hope */ 2906 2907 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 2908 bzero(cnc, sizeof(*cnc)); 2909 cnc->opcode = CISS_OPCODE_WRITE; 2910 cnc->command = CISS_COMMAND_ABORT_NOTIFY; 2911 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 2912 2913 ciss_print_request(cr); 2914 2915 /* 2916 * Submit the request and wait for it to complete. 2917 */ 2918 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 2919 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error); 2920 goto out; 2921 } 2922 2923 /* 2924 * Check response. 2925 */ 2926 ciss_report_request(cr, &command_status, &scsi_status); 2927 switch(command_status) { 2928 case CISS_CMD_STATUS_SUCCESS: 2929 break; 2930 case CISS_CMD_STATUS_INVALID_COMMAND: 2931 /* 2932 * Some older adapters don't support the CISS version of this 2933 * command. Fall back to using the BMIC version. 2934 */ 2935 error = ciss_notify_abort_bmic(sc); 2936 if (error != 0) 2937 goto out; 2938 break; 2939 2940 case CISS_CMD_STATUS_TARGET_STATUS: 2941 /* 2942 * This can happen if the adapter thinks there wasn't an outstanding 2943 * Notify Event command but we did. We clean up here. 2944 */ 2945 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) { 2946 if (sc->ciss_periodic_notify != NULL) 2947 ciss_release_request(sc->ciss_periodic_notify); 2948 error = 0; 2949 goto out; 2950 } 2951 /* FALLTHROUGH */ 2952 2953 default: 2954 ciss_printf(sc, "Abort Notify Event command failed (%s)\n", 2955 ciss_name_command_status(command_status)); 2956 error = EIO; 2957 goto out; 2958 } 2959 2960 /* 2961 * Sleep waiting for the notifier command to complete. Note 2962 * that if it doesn't, we may end up in a bad situation, since 2963 * the adapter may deliver it later. Also note that the adapter 2964 * requires the Notify Event command to be cancelled in order to 2965 * maintain internal bookkeeping. 2966 */ 2967 s = splcam(); 2968 while (sc->ciss_periodic_notify != NULL) { 2969 error = tsleep(&sc->ciss_periodic_notify, 0, "cissNEA", hz * 5); 2970 if (error == EWOULDBLOCK) { 2971 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); 2972 break; 2973 } 2974 } 2975 splx(s); 2976 2977 out: 2978 /* release the cancel request */ 2979 if (cr != NULL) { 2980 if (cr->cr_data != NULL) 2981 free(cr->cr_data, CISS_MALLOC_CLASS); 2982 ciss_release_request(cr); 2983 } 2984 if (error == 0) 2985 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 2986 return(error); 2987 } 2988 2989 /************************************************************************ 2990 * Abort the Notify Event chain using a BMIC command. 2991 */ 2992 static int 2993 ciss_notify_abort_bmic(struct ciss_softc *sc) 2994 { 2995 struct ciss_request *cr; 2996 int error, command_status; 2997 2998 debug_called(1); 2999 3000 cr = NULL; 3001 error = 0; 3002 3003 /* verify that there's an outstanding command */ 3004 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3005 goto out; 3006 3007 /* 3008 * Build a BMIC command to cancel the Notify on Event command. 3009 * 3010 * Note that we are sending a CISS opcode here. Odd. 3011 */ 3012 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY, 3013 NULL, 0)) != 0) 3014 goto out; 3015 3016 /* 3017 * Submit the request and wait for it to complete. 3018 */ 3019 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3020 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error); 3021 goto out; 3022 } 3023 3024 /* 3025 * Check response. 3026 */ 3027 ciss_report_request(cr, &command_status, NULL); 3028 switch(command_status) { 3029 case CISS_CMD_STATUS_SUCCESS: 3030 break; 3031 default: 3032 ciss_printf(sc, "error cancelling Notify on Event (%s)\n", 3033 ciss_name_command_status(command_status)); 3034 error = EIO; 3035 goto out; 3036 } 3037 3038 out: 3039 if (cr != NULL) 3040 ciss_release_request(cr); 3041 return(error); 3042 } 3043 3044 /************************************************************************ 3045 * Handle a notify event relating to the status of a logical drive. 3046 * 3047 * XXX need to be able to defer some of these to properly handle 3048 * calling the "ID Physical drive" command, unless the 'extended' 3049 * drive IDs are always in BIG_MAP format. 3050 */ 3051 static void 3052 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn) 3053 { 3054 struct ciss_ldrive *ld; 3055 int ostatus; 3056 3057 debug_called(2); 3058 3059 ld = &sc->ciss_logical[cn->data.logical_status.logical_drive]; 3060 3061 switch (cn->subclass) { 3062 case CISS_NOTIFY_LOGICAL_STATUS: 3063 switch (cn->detail) { 3064 case 0: 3065 ciss_name_device(sc, cn->data.logical_status.logical_drive); 3066 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n", 3067 cn->data.logical_status.logical_drive, ld->cl_name, 3068 ciss_name_ldrive_status(cn->data.logical_status.previous_state), 3069 ciss_name_ldrive_status(cn->data.logical_status.new_state), 3070 cn->data.logical_status.spare_state, 3071 "\20\1configured\2rebuilding\3failed\4in use\5available\n"); 3072 3073 /* 3074 * Update our idea of the drive's status. 3075 */ 3076 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state); 3077 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3078 if (ld->cl_lstatus != NULL) 3079 ld->cl_lstatus->status = cn->data.logical_status.new_state; 3080 3081 #if 0 3082 /* 3083 * Have CAM rescan the drive if its status has changed. 3084 */ 3085 if (ostatus != ld->cl_status) 3086 ciss_cam_rescan_target(sc, cn->data.logical_status.logical_drive); 3087 #endif 3088 3089 break; 3090 3091 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ 3092 ciss_name_device(sc, cn->data.logical_status.logical_drive); 3093 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n", 3094 cn->data.logical_status.logical_drive, ld->cl_name); 3095 ciss_accept_media(sc, cn->data.logical_status.logical_drive, 1); 3096 break; 3097 3098 case 2: 3099 case 3: 3100 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n", 3101 cn->data.rebuild_aborted.logical_drive, 3102 sc->ciss_logical[cn->data.rebuild_aborted.logical_drive].cl_name, 3103 (cn->detail == 2) ? "read" : "write"); 3104 break; 3105 } 3106 break; 3107 3108 case CISS_NOTIFY_LOGICAL_ERROR: 3109 if (cn->detail == 0) { 3110 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n", 3111 cn->data.io_error.logical_drive, 3112 sc->ciss_logical[cn->data.io_error.logical_drive].cl_name, 3113 cn->data.io_error.failure_bus, 3114 cn->data.io_error.failure_drive); 3115 /* XXX should we take the drive down at this point, or will we be told? */ 3116 } 3117 break; 3118 3119 case CISS_NOTIFY_LOGICAL_SURFACE: 3120 if (cn->detail == 0) 3121 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n", 3122 cn->data.consistency_completed.logical_drive, 3123 sc->ciss_logical[cn->data.consistency_completed.logical_drive].cl_name); 3124 break; 3125 } 3126 } 3127 3128 /************************************************************************ 3129 * Handle a notify event relating to the status of a physical drive. 3130 */ 3131 static void 3132 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn) 3133 { 3134 3135 } 3136 3137 /************************************************************************ 3138 * Print a request. 3139 */ 3140 static void 3141 ciss_print_request(struct ciss_request *cr) 3142 { 3143 struct ciss_softc *sc; 3144 struct ciss_command *cc; 3145 int i; 3146 3147 sc = cr->cr_sc; 3148 cc = CISS_FIND_COMMAND(cr); 3149 3150 ciss_printf(sc, "REQUEST @ %p\n", cr); 3151 ciss_printf(sc, " data %p/%d tag %d flags %b\n", 3152 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags, 3153 "\20\1mapped\2sleep\3poll\4dataout\5datain\n"); 3154 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n", 3155 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag); 3156 switch(cc->header.address.mode.mode) { 3157 case CISS_HDR_ADDRESS_MODE_PERIPHERAL: 3158 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL: 3159 ciss_printf(sc, " physical bus %d target %d\n", 3160 cc->header.address.physical.bus, cc->header.address.physical.target); 3161 break; 3162 case CISS_HDR_ADDRESS_MODE_LOGICAL: 3163 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun); 3164 break; 3165 } 3166 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n", 3167 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" : 3168 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" : 3169 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??", 3170 cc->cdb.cdb_length, 3171 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" : 3172 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??", 3173 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" : 3174 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" : 3175 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" : 3176 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" : 3177 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??"); 3178 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " "); 3179 3180 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) { 3181 /* XXX print error info */ 3182 } else { 3183 /* since we don't use chained s/g, don't support it here */ 3184 for (i = 0; i < cc->header.sg_in_list; i++) { 3185 if ((i % 4) == 0) 3186 ciss_printf(sc, " "); 3187 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length); 3188 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1))) 3189 printf("\n"); 3190 } 3191 } 3192 } 3193 3194 /************************************************************************ 3195 * Print information about the status of a logical drive. 3196 */ 3197 static void 3198 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld) 3199 { 3200 int bus, target, i; 3201 3202 if (ld->cl_lstatus == NULL) { 3203 printf("does not exist\n"); 3204 return; 3205 } 3206 3207 /* print drive status */ 3208 switch(ld->cl_lstatus->status) { 3209 case CISS_LSTATUS_OK: 3210 printf("online\n"); 3211 break; 3212 case CISS_LSTATUS_INTERIM_RECOVERY: 3213 printf("in interim recovery mode\n"); 3214 break; 3215 case CISS_LSTATUS_READY_RECOVERY: 3216 printf("ready to begin recovery\n"); 3217 break; 3218 case CISS_LSTATUS_RECOVERING: 3219 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3220 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3221 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n", 3222 bus, target, ld->cl_lstatus->blocks_to_recover); 3223 break; 3224 case CISS_LSTATUS_EXPANDING: 3225 printf("being expanded, %u blocks remaining\n", 3226 ld->cl_lstatus->blocks_to_recover); 3227 break; 3228 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3229 printf("queued for expansion\n"); 3230 break; 3231 case CISS_LSTATUS_FAILED: 3232 printf("queued for expansion\n"); 3233 break; 3234 case CISS_LSTATUS_WRONG_PDRIVE: 3235 printf("wrong physical drive inserted\n"); 3236 break; 3237 case CISS_LSTATUS_MISSING_PDRIVE: 3238 printf("missing a needed physical drive\n"); 3239 break; 3240 case CISS_LSTATUS_BECOMING_READY: 3241 printf("becoming ready\n"); 3242 break; 3243 } 3244 3245 /* print failed physical drives */ 3246 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) { 3247 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]); 3248 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]); 3249 if (bus == -1) 3250 continue; 3251 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target, 3252 ld->cl_lstatus->drive_failure_map[i]); 3253 } 3254 } 3255 3256 #ifdef CISS_DEBUG 3257 /************************************************************************ 3258 * Print information about the controller/driver. 3259 */ 3260 static void 3261 ciss_print_adapter(struct ciss_softc *sc) 3262 { 3263 int i; 3264 3265 ciss_printf(sc, "ADAPTER:\n"); 3266 for (i = 0; i < CISSQ_COUNT; i++) { 3267 ciss_printf(sc, "%s %d/%d\n", 3268 i == 0 ? "free" : 3269 i == 1 ? "busy" : "complete", 3270 sc->ciss_qstat[i].q_length, 3271 sc->ciss_qstat[i].q_max); 3272 } 3273 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests); 3274 ciss_printf(sc, "notify_head/tail %d/%d\n", 3275 sc->ciss_notify_head, sc->ciss_notify_tail); 3276 ciss_printf(sc, "flags %b\n", sc->ciss_flags, 3277 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n"); 3278 3279 for (i = 0; i < CISS_MAX_LOGICAL; i++) { 3280 ciss_printf(sc, "LOGICAL DRIVE %d: ", i); 3281 ciss_print_ldrive(sc, sc->ciss_logical + i); 3282 } 3283 3284 for (i = 1; i < sc->ciss_max_requests; i++) 3285 ciss_print_request(sc->ciss_request + i); 3286 3287 } 3288 3289 /* DDB hook */ 3290 static void 3291 ciss_print0(void) 3292 { 3293 struct ciss_softc *sc; 3294 3295 sc = devclass_get_softc(devclass_find("ciss"), 0); 3296 if (sc == NULL) { 3297 printf("no ciss controllers\n"); 3298 } else { 3299 ciss_print_adapter(sc); 3300 } 3301 } 3302 #endif 3303 3304 /************************************************************************ 3305 * Return a name for a logical drive status value. 3306 */ 3307 static const char * 3308 ciss_name_ldrive_status(int status) 3309 { 3310 switch (status) { 3311 case CISS_LSTATUS_OK: 3312 return("OK"); 3313 case CISS_LSTATUS_FAILED: 3314 return("failed"); 3315 case CISS_LSTATUS_NOT_CONFIGURED: 3316 return("not configured"); 3317 case CISS_LSTATUS_INTERIM_RECOVERY: 3318 return("interim recovery"); 3319 case CISS_LSTATUS_READY_RECOVERY: 3320 return("ready for recovery"); 3321 case CISS_LSTATUS_RECOVERING: 3322 return("recovering"); 3323 case CISS_LSTATUS_WRONG_PDRIVE: 3324 return("wrong physical drive inserted"); 3325 case CISS_LSTATUS_MISSING_PDRIVE: 3326 return("missing physical drive"); 3327 case CISS_LSTATUS_EXPANDING: 3328 return("expanding"); 3329 case CISS_LSTATUS_BECOMING_READY: 3330 return("becoming ready"); 3331 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3332 return("queued for expansion"); 3333 } 3334 return("unknown status"); 3335 } 3336 3337 /************************************************************************ 3338 * Return an online/offline/nonexistent value for a logical drive 3339 * status value. 3340 */ 3341 static int 3342 ciss_decode_ldrive_status(int status) 3343 { 3344 switch(status) { 3345 case CISS_LSTATUS_NOT_CONFIGURED: 3346 return(CISS_LD_NONEXISTENT); 3347 3348 case CISS_LSTATUS_OK: 3349 case CISS_LSTATUS_INTERIM_RECOVERY: 3350 case CISS_LSTATUS_READY_RECOVERY: 3351 case CISS_LSTATUS_RECOVERING: 3352 case CISS_LSTATUS_EXPANDING: 3353 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3354 return(CISS_LD_ONLINE); 3355 3356 case CISS_LSTATUS_FAILED: 3357 case CISS_LSTATUS_WRONG_PDRIVE: 3358 case CISS_LSTATUS_MISSING_PDRIVE: 3359 case CISS_LSTATUS_BECOMING_READY: 3360 default: 3361 return(CISS_LD_OFFLINE); 3362 } 3363 } 3364 3365 3366 /************************************************************************ 3367 * Return a name for a logical drive's organisation. 3368 */ 3369 static const char * 3370 ciss_name_ldrive_org(int org) 3371 { 3372 switch(org) { 3373 case CISS_LDRIVE_RAID0: 3374 return("RAID 0"); 3375 case CISS_LDRIVE_RAID1: 3376 return("RAID 1"); 3377 case CISS_LDRIVE_RAID4: 3378 return("RAID 4"); 3379 case CISS_LDRIVE_RAID5: 3380 return("RAID 5"); 3381 } 3382 return("unkown"); 3383 } 3384 3385 /************************************************************************ 3386 * Return a name for a command status value. 3387 */ 3388 static const char * 3389 ciss_name_command_status(int status) 3390 { 3391 switch(status) { 3392 case CISS_CMD_STATUS_SUCCESS: 3393 return("success"); 3394 case CISS_CMD_STATUS_TARGET_STATUS: 3395 return("target status"); 3396 case CISS_CMD_STATUS_DATA_UNDERRUN: 3397 return("data underrun"); 3398 case CISS_CMD_STATUS_DATA_OVERRUN: 3399 return("data overrun"); 3400 case CISS_CMD_STATUS_INVALID_COMMAND: 3401 return("invalid command"); 3402 case CISS_CMD_STATUS_PROTOCOL_ERROR: 3403 return("protocol error"); 3404 case CISS_CMD_STATUS_HARDWARE_ERROR: 3405 return("hardware error"); 3406 case CISS_CMD_STATUS_CONNECTION_LOST: 3407 return("connection lost"); 3408 case CISS_CMD_STATUS_ABORTED: 3409 return("aborted"); 3410 case CISS_CMD_STATUS_ABORT_FAILED: 3411 return("abort failed"); 3412 case CISS_CMD_STATUS_UNSOLICITED_ABORT: 3413 return("unsolicited abort"); 3414 case CISS_CMD_STATUS_TIMEOUT: 3415 return("timeout"); 3416 case CISS_CMD_STATUS_UNABORTABLE: 3417 return("unabortable"); 3418 } 3419 return("unknown status"); 3420 } 3421 3422 /************************************************************************ 3423 * Handle an open on the control device. 3424 */ 3425 static int 3426 ciss_open(dev_t dev, int flags, int fmt, d_thread_t *p) 3427 { 3428 struct ciss_softc *sc; 3429 3430 debug_called(1); 3431 3432 sc = (struct ciss_softc *)dev->si_drv1; 3433 3434 /* we might want to veto if someone already has us open */ 3435 3436 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; 3437 return(0); 3438 } 3439 3440 /************************************************************************ 3441 * Handle the last close on the control device. 3442 */ 3443 static int 3444 ciss_close(dev_t dev, int flags, int fmt, d_thread_t *p) 3445 { 3446 struct ciss_softc *sc; 3447 3448 debug_called(1); 3449 3450 sc = (struct ciss_softc *)dev->si_drv1; 3451 3452 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; 3453 return (0); 3454 } 3455 3456 /******************************************************************************** 3457 * Handle adapter-specific control operations. 3458 * 3459 * Note that the API here is compatible with the Linux driver, in order to 3460 * simplify the porting of Compaq's userland tools. 3461 */ 3462 static int 3463 ciss_ioctl(dev_t dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *p) 3464 { 3465 struct ciss_softc *sc; 3466 int error; 3467 3468 debug_called(1); 3469 3470 sc = (struct ciss_softc *)dev->si_drv1; 3471 error = 0; 3472 3473 switch(cmd) { 3474 case CCISS_GETPCIINFO: 3475 { 3476 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr; 3477 3478 pis->bus = pci_get_bus(sc->ciss_dev); 3479 pis->dev_fn = pci_get_slot(sc->ciss_dev); 3480 pis->board_id = pci_get_devid(sc->ciss_dev); 3481 3482 break; 3483 } 3484 3485 case CCISS_GETINTINFO: 3486 { 3487 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 3488 3489 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay; 3490 cis->count = sc->ciss_cfg->interrupt_coalesce_count; 3491 3492 break; 3493 } 3494 3495 case CCISS_SETINTINFO: 3496 { 3497 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 3498 3499 if ((cis->delay == 0) && (cis->count == 0)) { 3500 error = EINVAL; 3501 break; 3502 } 3503 3504 /* 3505 * XXX apparently this is only safe if the controller is idle, 3506 * we should suspend it before doing this. 3507 */ 3508 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay; 3509 sc->ciss_cfg->interrupt_coalesce_count = cis->count; 3510 3511 if (ciss_update_config(sc)) 3512 error = EIO; 3513 3514 /* XXX resume the controller here */ 3515 break; 3516 } 3517 3518 case CCISS_GETNODENAME: 3519 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr, 3520 sizeof(NodeName_type)); 3521 break; 3522 3523 case CCISS_SETNODENAME: 3524 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name, 3525 sizeof(NodeName_type)); 3526 if (ciss_update_config(sc)) 3527 error = EIO; 3528 break; 3529 3530 case CCISS_GETHEARTBEAT: 3531 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat; 3532 break; 3533 3534 case CCISS_GETBUSTYPES: 3535 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types; 3536 break; 3537 3538 case CCISS_GETFIRMVER: 3539 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr, 3540 sizeof(FirmwareVer_type)); 3541 break; 3542 3543 case CCISS_GETDRIVERVER: 3544 *(DriverVer_type *)addr = CISS_DRIVER_VERSION; 3545 break; 3546 3547 case CCISS_REVALIDVOLS: 3548 /* 3549 * This is a bit ugly; to do it "right" we really need 3550 * to find any disks that have changed, kick CAM off them, 3551 * then rescan only these disks. It'd be nice if they 3552 * a) told us which disk(s) they were going to play with, 3553 * and b) which ones had arrived. 8( 3554 */ 3555 break; 3556 3557 case CCISS_PASSTHRU: 3558 error = ciss_user_command(sc, (IOCTL_Command_struct *)addr); 3559 break; 3560 3561 default: 3562 debug(0, "unknown ioctl 0x%lx", cmd); 3563 3564 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO); 3565 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO); 3566 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO); 3567 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME); 3568 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME); 3569 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT); 3570 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES); 3571 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER); 3572 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER); 3573 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS); 3574 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU); 3575 3576 error = ENOIOCTL; 3577 break; 3578 } 3579 3580 return(error); 3581 } 3582