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