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