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