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