1 /*- 2 * Copyright (c) 2001 Michael Smith 3 * Copyright (c) 2004 Paul Saab 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * Common Interface for SCSI-3 Support driver. 32 * 33 * CISS claims to provide a common interface between a generic SCSI 34 * transport and an intelligent host adapter. 35 * 36 * This driver supports CISS as defined in the document "CISS Command 37 * Interface for SCSI-3 Support Open Specification", Version 1.04, 38 * Valence Number 1, dated 20001127, produced by Compaq Computer 39 * Corporation. This document appears to be a hastily and somewhat 40 * arbitrarlily cut-down version of a larger (and probably even more 41 * chaotic and inconsistent) Compaq internal document. Various 42 * details were also gleaned from Compaq's "cciss" driver for Linux. 43 * 44 * We provide a shim layer between the CISS interface and CAM, 45 * offloading most of the queueing and being-a-disk chores onto CAM. 46 * Entry to the driver is via the PCI bus attachment (ciss_probe, 47 * ciss_attach, etc) and via the CAM interface (ciss_cam_action, 48 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI 49 * citizens and we have to fake up some responses to get reasonable 50 * behaviour out of them. In addition, the CISS command set is by no 51 * means adequate to support the functionality of a RAID controller, 52 * and thus the supported Compaq adapters utilise portions of the 53 * control protocol from earlier Compaq adapter families. 54 * 55 * Note that we only support the "simple" transport layer over PCI. 56 * This interface (ab)uses the I2O register set (specifically the post 57 * queues) to exchange commands with the adapter. Other interfaces 58 * are available, but we aren't supposed to know about them, and it is 59 * dubious whether they would provide major performance improvements 60 * except under extreme load. 61 * 62 * Currently the only supported CISS adapters are the Compaq Smart 63 * Array 5* series (5300, 5i, 532). Even with only three adapters, 64 * Compaq still manage to have interface variations. 65 * 66 * 67 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as 68 * well as Paul Saab at Yahoo! for their assistance in making this 69 * driver happen. 70 * 71 * More thanks must go to John Cagle at HP for the countless hours 72 * spent making this driver "work" with the MSA* series storage 73 * enclosures. Without his help (and nagging), this driver could not 74 * be used with these enclosures. 75 */ 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/malloc.h> 80 #include <sys/kernel.h> 81 #include <sys/bus.h> 82 #include <sys/conf.h> 83 #include <sys/stat.h> 84 #include <sys/kthread.h> 85 #include <sys/queue.h> 86 #include <sys/sysctl.h> 87 88 #include <cam/cam.h> 89 #include <cam/cam_ccb.h> 90 #include <cam/cam_periph.h> 91 #include <cam/cam_sim.h> 92 #include <cam/cam_xpt_sim.h> 93 #include <cam/scsi/scsi_all.h> 94 #include <cam/scsi/scsi_message.h> 95 96 #include <machine/bus.h> 97 #include <machine/endian.h> 98 #include <machine/resource.h> 99 #include <sys/rman.h> 100 101 #include <dev/pci/pcireg.h> 102 #include <dev/pci/pcivar.h> 103 104 #include <dev/ciss/cissreg.h> 105 #include <dev/ciss/cissvar.h> 106 #include <dev/ciss/cissio.h> 107 108 MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers"); 109 110 /* pci interface */ 111 static int ciss_lookup(device_t dev); 112 static int ciss_probe(device_t dev); 113 static int ciss_attach(device_t dev); 114 static int ciss_detach(device_t dev); 115 static int ciss_shutdown(device_t dev); 116 117 /* (de)initialisation functions, control wrappers */ 118 static int ciss_init_pci(struct ciss_softc *sc); 119 static int ciss_wait_adapter(struct ciss_softc *sc); 120 static int ciss_flush_adapter(struct ciss_softc *sc); 121 static int ciss_init_requests(struct ciss_softc *sc); 122 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, 123 int nseg, int error); 124 static int ciss_identify_adapter(struct ciss_softc *sc); 125 static int ciss_init_logical(struct ciss_softc *sc); 126 static int ciss_init_physical(struct ciss_softc *sc); 127 static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll); 128 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld); 129 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld); 130 static int ciss_update_config(struct ciss_softc *sc); 131 static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld); 132 static void ciss_init_sysctl(struct ciss_softc *sc); 133 static void ciss_soft_reset(struct ciss_softc *sc); 134 static void ciss_free(struct ciss_softc *sc); 135 static void ciss_spawn_notify_thread(struct ciss_softc *sc); 136 static void ciss_kill_notify_thread(struct ciss_softc *sc); 137 138 /* request submission/completion */ 139 static int ciss_start(struct ciss_request *cr); 140 static void ciss_done(struct ciss_softc *sc); 141 static void ciss_intr(void *arg); 142 static void ciss_complete(struct ciss_softc *sc); 143 static int ciss_report_request(struct ciss_request *cr, int *command_status, 144 int *scsi_status); 145 static int ciss_synch_request(struct ciss_request *cr, int timeout); 146 static int ciss_poll_request(struct ciss_request *cr, int timeout); 147 static int ciss_wait_request(struct ciss_request *cr, int timeout); 148 #if 0 149 static int ciss_abort_request(struct ciss_request *cr); 150 #endif 151 152 /* request queueing */ 153 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp); 154 static void ciss_preen_command(struct ciss_request *cr); 155 static void ciss_release_request(struct ciss_request *cr); 156 157 /* request helpers */ 158 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 159 int opcode, void **bufp, size_t bufsize); 160 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc); 161 162 /* DMA map/unmap */ 163 static int ciss_map_request(struct ciss_request *cr); 164 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, 165 int nseg, int error); 166 static void ciss_unmap_request(struct ciss_request *cr); 167 168 /* CAM interface */ 169 static int ciss_cam_init(struct ciss_softc *sc); 170 static void ciss_cam_rescan_target(struct ciss_softc *sc, 171 int bus, int target); 172 static void ciss_cam_rescan_all(struct ciss_softc *sc); 173 static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 174 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb); 175 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 176 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio); 177 static void ciss_cam_poll(struct cam_sim *sim); 178 static void ciss_cam_complete(struct ciss_request *cr); 179 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio); 180 static struct cam_periph *ciss_find_periph(struct ciss_softc *sc, 181 int bus, int target); 182 static int ciss_name_device(struct ciss_softc *sc, int bus, int target); 183 184 /* periodic status monitoring */ 185 static void ciss_periodic(void *arg); 186 static void ciss_nop_complete(struct ciss_request *cr); 187 static void ciss_disable_adapter(struct ciss_softc *sc); 188 static void ciss_notify_event(struct ciss_softc *sc); 189 static void ciss_notify_complete(struct ciss_request *cr); 190 static int ciss_notify_abort(struct ciss_softc *sc); 191 static int ciss_notify_abort_bmic(struct ciss_softc *sc); 192 static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn); 193 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn); 194 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn); 195 196 /* debugging output */ 197 static void ciss_print_request(struct ciss_request *cr); 198 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld); 199 static const char *ciss_name_ldrive_status(int status); 200 static int ciss_decode_ldrive_status(int status); 201 static const char *ciss_name_ldrive_org(int org); 202 static const char *ciss_name_command_status(int status); 203 204 /* 205 * PCI bus interface. 206 */ 207 static device_method_t ciss_methods[] = { 208 /* Device interface */ 209 DEVMETHOD(device_probe, ciss_probe), 210 DEVMETHOD(device_attach, ciss_attach), 211 DEVMETHOD(device_detach, ciss_detach), 212 DEVMETHOD(device_shutdown, ciss_shutdown), 213 { 0, 0 } 214 }; 215 216 static driver_t ciss_pci_driver = { 217 "ciss", 218 ciss_methods, 219 sizeof(struct ciss_softc) 220 }; 221 222 static devclass_t ciss_devclass; 223 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0); 224 MODULE_DEPEND(ciss, cam, 1, 1, 1); 225 MODULE_DEPEND(ciss, pci, 1, 1, 1); 226 227 /* 228 * Control device interface. 229 */ 230 static d_open_t ciss_open; 231 static d_close_t ciss_close; 232 static d_ioctl_t ciss_ioctl; 233 234 static struct cdevsw ciss_cdevsw = { 235 .d_version = D_VERSION, 236 .d_flags = 0, 237 .d_open = ciss_open, 238 .d_close = ciss_close, 239 .d_ioctl = ciss_ioctl, 240 .d_name = "ciss", 241 }; 242 243 /* 244 * This tunable can be set at boot time and controls whether physical devices 245 * that are marked hidden by the firmware should be exposed anyways. 246 */ 247 static unsigned int ciss_expose_hidden_physical = 0; 248 TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical); 249 250 static unsigned int ciss_nop_message_heartbeat = 0; 251 TUNABLE_INT("hw.ciss.nop_message_heartbeat", &ciss_nop_message_heartbeat); 252 253 /************************************************************************ 254 * CISS adapters amazingly don't have a defined programming interface 255 * value. (One could say some very despairing things about PCI and 256 * people just not getting the general idea.) So we are forced to 257 * stick with matching against subvendor/subdevice, and thus have to 258 * be updated for every new CISS adapter that appears. 259 */ 260 #define CISS_BOARD_SA5 (1<<0) 261 #define CISS_BOARD_SA5B (1<<1) 262 263 static struct 264 { 265 u_int16_t subvendor; 266 u_int16_t subdevice; 267 int flags; 268 char *desc; 269 } ciss_vendor_data[] = { 270 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" }, 271 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" }, 272 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" }, 273 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" }, 274 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" }, 275 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" }, 276 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" }, 277 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" }, 278 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" }, 279 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" }, 280 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" }, 281 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" }, 282 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" }, 283 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" }, 284 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" }, 285 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" }, 286 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" }, 287 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" }, 288 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" }, 289 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" }, 290 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" }, 291 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" }, 292 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" }, 293 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" }, 294 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" }, 295 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array" }, 296 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" }, 297 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" }, 298 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" }, 299 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" }, 300 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" }, 301 { 0, 0, 0, NULL } 302 }; 303 304 /************************************************************************ 305 * Find a match for the device in our list of known adapters. 306 */ 307 static int 308 ciss_lookup(device_t dev) 309 { 310 int i; 311 312 for (i = 0; ciss_vendor_data[i].desc != NULL; i++) 313 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) && 314 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) { 315 return(i); 316 } 317 return(-1); 318 } 319 320 /************************************************************************ 321 * Match a known CISS adapter. 322 */ 323 static int 324 ciss_probe(device_t dev) 325 { 326 int i; 327 328 i = ciss_lookup(dev); 329 if (i != -1) { 330 device_set_desc(dev, ciss_vendor_data[i].desc); 331 return(BUS_PROBE_DEFAULT); 332 } 333 return(ENOENT); 334 } 335 336 /************************************************************************ 337 * Attach the driver to this adapter. 338 */ 339 static int 340 ciss_attach(device_t dev) 341 { 342 struct ciss_softc *sc; 343 int i, error; 344 345 debug_called(1); 346 347 #ifdef CISS_DEBUG 348 /* print structure/union sizes */ 349 debug_struct(ciss_command); 350 debug_struct(ciss_header); 351 debug_union(ciss_device_address); 352 debug_struct(ciss_cdb); 353 debug_struct(ciss_report_cdb); 354 debug_struct(ciss_notify_cdb); 355 debug_struct(ciss_notify); 356 debug_struct(ciss_message_cdb); 357 debug_struct(ciss_error_info_pointer); 358 debug_struct(ciss_error_info); 359 debug_struct(ciss_sg_entry); 360 debug_struct(ciss_config_table); 361 debug_struct(ciss_bmic_cdb); 362 debug_struct(ciss_bmic_id_ldrive); 363 debug_struct(ciss_bmic_id_lstatus); 364 debug_struct(ciss_bmic_id_table); 365 debug_struct(ciss_bmic_id_pdrive); 366 debug_struct(ciss_bmic_blink_pdrive); 367 debug_struct(ciss_bmic_flush_cache); 368 debug_const(CISS_MAX_REQUESTS); 369 debug_const(CISS_MAX_LOGICAL); 370 debug_const(CISS_INTERRUPT_COALESCE_DELAY); 371 debug_const(CISS_INTERRUPT_COALESCE_COUNT); 372 debug_const(CISS_COMMAND_ALLOC_SIZE); 373 debug_const(CISS_COMMAND_SG_LENGTH); 374 375 debug_type(cciss_pci_info_struct); 376 debug_type(cciss_coalint_struct); 377 debug_type(cciss_coalint_struct); 378 debug_type(NodeName_type); 379 debug_type(NodeName_type); 380 debug_type(Heartbeat_type); 381 debug_type(BusTypes_type); 382 debug_type(FirmwareVer_type); 383 debug_type(DriverVer_type); 384 debug_type(IOCTL_Command_struct); 385 #endif 386 387 sc = device_get_softc(dev); 388 sc->ciss_dev = dev; 389 390 /* 391 * Work out adapter type. 392 */ 393 i = ciss_lookup(dev); 394 if (i < 0) { 395 ciss_printf(sc, "unknown adapter type\n"); 396 error = ENXIO; 397 goto out; 398 } 399 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { 400 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5; 401 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { 402 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; 403 } else { 404 /* really an error on our part */ 405 ciss_printf(sc, "unable to determine hardware type\n"); 406 error = ENXIO; 407 goto out; 408 } 409 410 /* 411 * Do PCI-specific init. 412 */ 413 if ((error = ciss_init_pci(sc)) != 0) 414 goto out; 415 416 /* 417 * Initialise driver queues. 418 */ 419 ciss_initq_free(sc); 420 ciss_initq_busy(sc); 421 ciss_initq_complete(sc); 422 ciss_initq_notify(sc); 423 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF); 424 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0); 425 426 /* 427 * Initalize device sysctls. 428 */ 429 ciss_init_sysctl(sc); 430 431 /* 432 * Initialise command/request pool. 433 */ 434 if ((error = ciss_init_requests(sc)) != 0) 435 goto out; 436 437 /* 438 * Get adapter information. 439 */ 440 if ((error = ciss_identify_adapter(sc)) != 0) 441 goto out; 442 443 /* 444 * Find all the physical devices. 445 */ 446 if ((error = ciss_init_physical(sc)) != 0) 447 goto out; 448 449 /* 450 * Build our private table of logical devices. 451 */ 452 if ((error = ciss_init_logical(sc)) != 0) 453 goto out; 454 455 /* 456 * Enable interrupts so that the CAM scan can complete. 457 */ 458 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc); 459 460 /* 461 * Initialise the CAM interface. 462 */ 463 if ((error = ciss_cam_init(sc)) != 0) 464 goto out; 465 466 /* 467 * Start the heartbeat routine and event chain. 468 */ 469 ciss_periodic(sc); 470 471 /* 472 * Create the control device. 473 */ 474 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev), 475 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 476 "ciss%d", device_get_unit(sc->ciss_dev)); 477 sc->ciss_dev_t->si_drv1 = sc; 478 479 /* 480 * The adapter is running; synchronous commands can now sleep 481 * waiting for an interrupt to signal completion. 482 */ 483 sc->ciss_flags |= CISS_FLAG_RUNNING; 484 485 ciss_spawn_notify_thread(sc); 486 487 error = 0; 488 out: 489 if (error != 0) 490 ciss_free(sc); 491 return(error); 492 } 493 494 /************************************************************************ 495 * Detach the driver from this adapter. 496 */ 497 static int 498 ciss_detach(device_t dev) 499 { 500 struct ciss_softc *sc = device_get_softc(dev); 501 502 debug_called(1); 503 504 mtx_lock(&sc->ciss_mtx); 505 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) { 506 mtx_unlock(&sc->ciss_mtx); 507 return (EBUSY); 508 } 509 510 /* flush adapter cache */ 511 ciss_flush_adapter(sc); 512 513 /* release all resources. The mutex is released and freed here too. */ 514 ciss_free(sc); 515 516 return(0); 517 } 518 519 /************************************************************************ 520 * Prepare adapter for system shutdown. 521 */ 522 static int 523 ciss_shutdown(device_t dev) 524 { 525 struct ciss_softc *sc = device_get_softc(dev); 526 527 debug_called(1); 528 529 mtx_lock(&sc->ciss_mtx); 530 /* flush adapter cache */ 531 ciss_flush_adapter(sc); 532 533 if (sc->ciss_soft_reset) 534 ciss_soft_reset(sc); 535 mtx_unlock(&sc->ciss_mtx); 536 537 return(0); 538 } 539 540 static void 541 ciss_init_sysctl(struct ciss_softc *sc) 542 { 543 544 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev), 545 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)), 546 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, ""); 547 } 548 549 /************************************************************************ 550 * Perform PCI-specific attachment actions. 551 */ 552 static int 553 ciss_init_pci(struct ciss_softc *sc) 554 { 555 uintptr_t cbase, csize, cofs; 556 int error; 557 558 debug_called(1); 559 560 /* 561 * Allocate register window first (we need this to find the config 562 * struct). 563 */ 564 error = ENXIO; 565 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS; 566 if ((sc->ciss_regs_resource = 567 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 568 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) { 569 ciss_printf(sc, "can't allocate register window\n"); 570 return(ENXIO); 571 } 572 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource); 573 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource); 574 575 /* 576 * Find the BAR holding the config structure. If it's not the one 577 * we already mapped for registers, map it too. 578 */ 579 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff; 580 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) { 581 if ((sc->ciss_cfg_resource = 582 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 583 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) { 584 ciss_printf(sc, "can't allocate config window\n"); 585 return(ENXIO); 586 } 587 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource); 588 csize = rman_get_end(sc->ciss_cfg_resource) - 589 rman_get_start(sc->ciss_cfg_resource) + 1; 590 } else { 591 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource); 592 csize = rman_get_end(sc->ciss_regs_resource) - 593 rman_get_start(sc->ciss_regs_resource) + 1; 594 } 595 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF); 596 597 /* 598 * Use the base/size/offset values we just calculated to 599 * sanity-check the config structure. If it's OK, point to it. 600 */ 601 if ((cofs + sizeof(struct ciss_config_table)) > csize) { 602 ciss_printf(sc, "config table outside window\n"); 603 return(ENXIO); 604 } 605 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs); 606 debug(1, "config struct at %p", sc->ciss_cfg); 607 608 /* 609 * Validate the config structure. If we supported other transport 610 * methods, we could select amongst them at this point in time. 611 */ 612 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) { 613 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n", 614 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1], 615 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]); 616 return(ENXIO); 617 } 618 619 /* 620 * Put the board into simple mode, and tell it we're using the low 621 * 4GB of RAM. Set the default interrupt coalescing options. 622 */ 623 if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) { 624 ciss_printf(sc, "adapter does not support 'simple' transport layer\n"); 625 return(ENXIO); 626 } 627 sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE; 628 sc->ciss_cfg->command_physlimit = 0; 629 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY; 630 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT; 631 632 #ifdef __i386__ 633 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH; 634 #endif 635 636 if (ciss_update_config(sc)) { 637 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n", 638 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR)); 639 return(ENXIO); 640 } 641 if (!(sc->ciss_cfg->active_method != CISS_TRANSPORT_METHOD_SIMPLE)) { 642 ciss_printf(sc, 643 "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n", 644 sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method); 645 return(ENXIO); 646 } 647 648 /* 649 * Wait for the adapter to come ready. 650 */ 651 if ((error = ciss_wait_adapter(sc)) != 0) 652 return(error); 653 654 /* 655 * Turn off interrupts before we go routing anything. 656 */ 657 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); 658 659 /* 660 * Allocate and set up our interrupt. 661 */ 662 sc->ciss_irq_rid = 0; 663 if ((sc->ciss_irq_resource = 664 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 665 RF_ACTIVE | RF_SHAREABLE)) == NULL) { 666 ciss_printf(sc, "can't allocate interrupt\n"); 667 return(ENXIO); 668 } 669 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource, 670 INTR_TYPE_CAM|INTR_MPSAFE, NULL, ciss_intr, sc, 671 &sc->ciss_intr)) { 672 ciss_printf(sc, "can't set up interrupt\n"); 673 return(ENXIO); 674 } 675 676 /* 677 * Allocate the parent bus DMA tag appropriate for our PCI 678 * interface. 679 * 680 * Note that "simple" adapters can only address within a 32-bit 681 * span. 682 */ 683 if (bus_dma_tag_create(NULL, /* parent */ 684 1, 0, /* alignment, boundary */ 685 BUS_SPACE_MAXADDR, /* lowaddr */ 686 BUS_SPACE_MAXADDR, /* highaddr */ 687 NULL, NULL, /* filter, filterarg */ 688 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 689 CISS_COMMAND_SG_LENGTH, /* nsegments */ 690 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 691 BUS_DMA_ALLOCNOW, /* flags */ 692 NULL, NULL, /* lockfunc, lockarg */ 693 &sc->ciss_parent_dmat)) { 694 ciss_printf(sc, "can't allocate parent DMA tag\n"); 695 return(ENOMEM); 696 } 697 698 /* 699 * Create DMA tag for mapping buffers into adapter-addressable 700 * space. 701 */ 702 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 703 1, 0, /* alignment, boundary */ 704 BUS_SPACE_MAXADDR, /* lowaddr */ 705 BUS_SPACE_MAXADDR, /* highaddr */ 706 NULL, NULL, /* filter, filterarg */ 707 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */ 708 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 709 0, /* flags */ 710 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */ 711 &sc->ciss_buffer_dmat)) { 712 ciss_printf(sc, "can't allocate buffer DMA tag\n"); 713 return(ENOMEM); 714 } 715 return(0); 716 } 717 718 /************************************************************************ 719 * Wait for the adapter to come ready. 720 */ 721 static int 722 ciss_wait_adapter(struct ciss_softc *sc) 723 { 724 int i; 725 726 debug_called(1); 727 728 /* 729 * Wait for the adapter to come ready. 730 */ 731 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) { 732 ciss_printf(sc, "waiting for adapter to come ready...\n"); 733 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) { 734 DELAY(1000000); /* one second */ 735 if (i > 30) { 736 ciss_printf(sc, "timed out waiting for adapter to come ready\n"); 737 return(EIO); 738 } 739 } 740 } 741 return(0); 742 } 743 744 /************************************************************************ 745 * Flush the adapter cache. 746 */ 747 static int 748 ciss_flush_adapter(struct ciss_softc *sc) 749 { 750 struct ciss_request *cr; 751 struct ciss_bmic_flush_cache *cbfc; 752 int error, command_status; 753 754 debug_called(1); 755 756 cr = NULL; 757 cbfc = NULL; 758 759 /* 760 * Build a BMIC request to flush the cache. We don't disable 761 * it, as we may be going to do more I/O (eg. we are emulating 762 * the Synchronise Cache command). 763 */ 764 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 765 error = ENOMEM; 766 goto out; 767 } 768 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE, 769 (void **)&cbfc, sizeof(*cbfc))) != 0) 770 goto out; 771 772 /* 773 * Submit the request and wait for it to complete. 774 */ 775 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 776 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error); 777 goto out; 778 } 779 780 /* 781 * Check response. 782 */ 783 ciss_report_request(cr, &command_status, NULL); 784 switch(command_status) { 785 case CISS_CMD_STATUS_SUCCESS: 786 break; 787 default: 788 ciss_printf(sc, "error flushing cache (%s)\n", 789 ciss_name_command_status(command_status)); 790 error = EIO; 791 goto out; 792 } 793 794 out: 795 if (cbfc != NULL) 796 free(cbfc, CISS_MALLOC_CLASS); 797 if (cr != NULL) 798 ciss_release_request(cr); 799 return(error); 800 } 801 802 static void 803 ciss_soft_reset(struct ciss_softc *sc) 804 { 805 struct ciss_request *cr = NULL; 806 struct ciss_command *cc; 807 int i, error = 0; 808 809 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 810 /* only reset proxy controllers */ 811 if (sc->ciss_controllers[i].physical.bus == 0) 812 continue; 813 814 if ((error = ciss_get_request(sc, &cr)) != 0) 815 break; 816 817 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET, 818 NULL, 0)) != 0) 819 break; 820 821 cc = CISS_FIND_COMMAND(cr); 822 cc->header.address = sc->ciss_controllers[i]; 823 824 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) 825 break; 826 827 ciss_release_request(cr); 828 } 829 830 if (error) 831 ciss_printf(sc, "error resetting controller (%d)\n", error); 832 833 if (cr != NULL) 834 ciss_release_request(cr); 835 } 836 837 /************************************************************************ 838 * Allocate memory for the adapter command structures, initialise 839 * the request structures. 840 * 841 * Note that the entire set of commands are allocated in a single 842 * contiguous slab. 843 */ 844 static int 845 ciss_init_requests(struct ciss_softc *sc) 846 { 847 struct ciss_request *cr; 848 int i; 849 850 debug_called(1); 851 852 /* 853 * Calculate the number of request structures/commands we are 854 * going to provide for this adapter. 855 */ 856 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands); 857 858 if (bootverbose) 859 ciss_printf(sc, "using %d of %d available commands\n", 860 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands); 861 862 /* 863 * Create the DMA tag for commands. 864 */ 865 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 866 1, 0, /* alignment, boundary */ 867 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 868 BUS_SPACE_MAXADDR, /* highaddr */ 869 NULL, NULL, /* filter, filterarg */ 870 CISS_COMMAND_ALLOC_SIZE * 871 sc->ciss_max_requests, 1, /* maxsize, nsegments */ 872 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 873 BUS_DMA_ALLOCNOW, /* flags */ 874 NULL, NULL, /* lockfunc, lockarg */ 875 &sc->ciss_command_dmat)) { 876 ciss_printf(sc, "can't allocate command DMA tag\n"); 877 return(ENOMEM); 878 } 879 /* 880 * Allocate memory and make it available for DMA. 881 */ 882 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command, 883 BUS_DMA_NOWAIT, &sc->ciss_command_map)) { 884 ciss_printf(sc, "can't allocate command memory\n"); 885 return(ENOMEM); 886 } 887 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map, sc->ciss_command, 888 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests, 889 ciss_command_map_helper, sc, 0); 890 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests); 891 892 /* 893 * Set up the request and command structures, push requests onto 894 * the free queue. 895 */ 896 for (i = 1; i < sc->ciss_max_requests; i++) { 897 cr = &sc->ciss_request[i]; 898 cr->cr_sc = sc; 899 cr->cr_tag = i; 900 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap); 901 ciss_enqueue_free(cr); 902 } 903 return(0); 904 } 905 906 static void 907 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 908 { 909 struct ciss_softc *sc = (struct ciss_softc *)arg; 910 911 sc->ciss_command_phys = segs->ds_addr; 912 } 913 914 /************************************************************************ 915 * Identify the adapter, print some information about it. 916 */ 917 static int 918 ciss_identify_adapter(struct ciss_softc *sc) 919 { 920 struct ciss_request *cr; 921 int error, command_status; 922 923 debug_called(1); 924 925 cr = NULL; 926 927 /* 928 * Get a request, allocate storage for the adapter data. 929 */ 930 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR, 931 (void **)&sc->ciss_id, 932 sizeof(*sc->ciss_id))) != 0) 933 goto out; 934 935 /* 936 * Submit the request and wait for it to complete. 937 */ 938 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 939 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error); 940 goto out; 941 } 942 943 /* 944 * Check response. 945 */ 946 ciss_report_request(cr, &command_status, NULL); 947 switch(command_status) { 948 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 949 break; 950 case CISS_CMD_STATUS_DATA_UNDERRUN: 951 case CISS_CMD_STATUS_DATA_OVERRUN: 952 ciss_printf(sc, "data over/underrun reading adapter information\n"); 953 default: 954 ciss_printf(sc, "error reading adapter information (%s)\n", 955 ciss_name_command_status(command_status)); 956 error = EIO; 957 goto out; 958 } 959 960 /* sanity-check reply */ 961 if (!sc->ciss_id->big_map_supported) { 962 ciss_printf(sc, "adapter does not support BIG_MAP\n"); 963 error = ENXIO; 964 goto out; 965 } 966 967 #if 0 968 /* XXX later revisions may not need this */ 969 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; 970 #endif 971 972 /* XXX only really required for old 5300 adapters? */ 973 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; 974 975 /* print information */ 976 if (bootverbose) { 977 #if 0 /* XXX proxy volumes??? */ 978 ciss_printf(sc, " %d logical drive%s configured\n", 979 sc->ciss_id->configured_logical_drives, 980 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); 981 #endif 982 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision); 983 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count); 984 985 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature); 986 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence); 987 ciss_printf(sc, " supported I/O methods 0x%b\n", 988 sc->ciss_cfg->supported_methods, 989 "\20\1READY\2simple\3performant\4MEMQ\n"); 990 ciss_printf(sc, " active I/O method 0x%b\n", 991 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n"); 992 ciss_printf(sc, " 4G page base 0x%08x\n", 993 sc->ciss_cfg->command_physlimit); 994 ciss_printf(sc, " interrupt coalesce delay %dus\n", 995 sc->ciss_cfg->interrupt_coalesce_delay); 996 ciss_printf(sc, " interrupt coalesce count %d\n", 997 sc->ciss_cfg->interrupt_coalesce_count); 998 ciss_printf(sc, " max outstanding commands %d\n", 999 sc->ciss_cfg->max_outstanding_commands); 1000 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types, 1001 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n"); 1002 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name); 1003 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat); 1004 } 1005 1006 out: 1007 if (error) { 1008 if (sc->ciss_id != NULL) { 1009 free(sc->ciss_id, CISS_MALLOC_CLASS); 1010 sc->ciss_id = NULL; 1011 } 1012 } 1013 if (cr != NULL) 1014 ciss_release_request(cr); 1015 return(error); 1016 } 1017 1018 /************************************************************************ 1019 * Helper routine for generating a list of logical and physical luns. 1020 */ 1021 static struct ciss_lun_report * 1022 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits) 1023 { 1024 struct ciss_request *cr; 1025 struct ciss_command *cc; 1026 struct ciss_report_cdb *crc; 1027 struct ciss_lun_report *cll; 1028 int command_status; 1029 int report_size; 1030 int error = 0; 1031 1032 debug_called(1); 1033 1034 cr = NULL; 1035 cll = NULL; 1036 1037 /* 1038 * Get a request, allocate storage for the address list. 1039 */ 1040 if ((error = ciss_get_request(sc, &cr)) != 0) 1041 goto out; 1042 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address); 1043 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 1044 ciss_printf(sc, "can't allocate memory for lun report\n"); 1045 error = ENOMEM; 1046 goto out; 1047 } 1048 1049 /* 1050 * Build the Report Logical/Physical LUNs command. 1051 */ 1052 cc = CISS_FIND_COMMAND(cr); 1053 cr->cr_data = cll; 1054 cr->cr_length = report_size; 1055 cr->cr_flags = CISS_REQ_DATAIN; 1056 1057 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 1058 cc->header.address.physical.bus = 0; 1059 cc->header.address.physical.target = 0; 1060 cc->cdb.cdb_length = sizeof(*crc); 1061 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1062 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1063 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1064 cc->cdb.timeout = 30; /* XXX better suggestions? */ 1065 1066 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]); 1067 bzero(crc, sizeof(*crc)); 1068 crc->opcode = opcode; 1069 crc->length = htonl(report_size); /* big-endian field */ 1070 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */ 1071 1072 /* 1073 * Submit the request and wait for it to complete. (timeout 1074 * here should be much greater than above) 1075 */ 1076 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1077 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error); 1078 goto out; 1079 } 1080 1081 /* 1082 * Check response. Note that data over/underrun is OK. 1083 */ 1084 ciss_report_request(cr, &command_status, NULL); 1085 switch(command_status) { 1086 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1087 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */ 1088 break; 1089 case CISS_CMD_STATUS_DATA_OVERRUN: 1090 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n", 1091 CISS_MAX_LOGICAL); 1092 break; 1093 default: 1094 ciss_printf(sc, "error detecting logical drive configuration (%s)\n", 1095 ciss_name_command_status(command_status)); 1096 error = EIO; 1097 goto out; 1098 } 1099 ciss_release_request(cr); 1100 cr = NULL; 1101 1102 out: 1103 if (cr != NULL) 1104 ciss_release_request(cr); 1105 if (error && cll != NULL) { 1106 free(cll, CISS_MALLOC_CLASS); 1107 cll = NULL; 1108 } 1109 return(cll); 1110 } 1111 1112 /************************************************************************ 1113 * Find logical drives on the adapter. 1114 */ 1115 static int 1116 ciss_init_logical(struct ciss_softc *sc) 1117 { 1118 struct ciss_lun_report *cll; 1119 int error = 0, i, j; 1120 int ndrives; 1121 1122 debug_called(1); 1123 1124 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 1125 CISS_MAX_LOGICAL); 1126 if (cll == NULL) { 1127 error = ENXIO; 1128 goto out; 1129 } 1130 1131 /* sanity-check reply */ 1132 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1133 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) { 1134 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n", 1135 ndrives, CISS_MAX_LOGICAL); 1136 error = ENXIO; 1137 goto out; 1138 } 1139 1140 /* 1141 * Save logical drive information. 1142 */ 1143 if (bootverbose) { 1144 ciss_printf(sc, "%d logical drive%s\n", 1145 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : ""); 1146 } 1147 1148 sc->ciss_logical = 1149 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *), 1150 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1151 if (sc->ciss_logical == NULL) { 1152 error = ENXIO; 1153 goto out; 1154 } 1155 1156 for (i = 0; i <= sc->ciss_max_logical_bus; i++) { 1157 sc->ciss_logical[i] = 1158 malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive), 1159 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1160 if (sc->ciss_logical[i] == NULL) { 1161 error = ENXIO; 1162 goto out; 1163 } 1164 1165 for (j = 0; j < CISS_MAX_LOGICAL; j++) 1166 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT; 1167 } 1168 1169 1170 for (i = 0; i < CISS_MAX_LOGICAL; i++) { 1171 if (i < ndrives) { 1172 struct ciss_ldrive *ld; 1173 int bus, target; 1174 1175 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 1176 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 1177 ld = &sc->ciss_logical[bus][target]; 1178 1179 ld->cl_address = cll->lun[i]; 1180 ld->cl_controller = &sc->ciss_controllers[bus]; 1181 if (ciss_identify_logical(sc, ld) != 0) 1182 continue; 1183 /* 1184 * If the drive has had media exchanged, we should bring it online. 1185 */ 1186 if (ld->cl_lstatus->media_exchanged) 1187 ciss_accept_media(sc, ld); 1188 1189 } 1190 } 1191 1192 out: 1193 if (cll != NULL) 1194 free(cll, CISS_MALLOC_CLASS); 1195 return(error); 1196 } 1197 1198 static int 1199 ciss_init_physical(struct ciss_softc *sc) 1200 { 1201 struct ciss_lun_report *cll; 1202 int error = 0, i; 1203 int nphys; 1204 int bus, target; 1205 1206 debug_called(1); 1207 1208 bus = 0; 1209 target = 0; 1210 1211 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 1212 CISS_MAX_PHYSICAL); 1213 if (cll == NULL) { 1214 error = ENXIO; 1215 goto out; 1216 } 1217 1218 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1219 1220 if (bootverbose) { 1221 ciss_printf(sc, "%d physical device%s\n", 1222 nphys, (nphys > 1 || nphys == 0) ? "s" : ""); 1223 } 1224 1225 /* 1226 * Figure out the bus mapping. 1227 * Logical buses include both the local logical bus for local arrays and 1228 * proxy buses for remote arrays. Physical buses are numbered by the 1229 * controller and represent physical buses that hold physical devices. 1230 * We shift these bus numbers so that everything fits into a single flat 1231 * numbering space for CAM. Logical buses occupy the first 32 CAM bus 1232 * numbers, and the physical bus numbers are shifted to be above that. 1233 * This results in the various driver arrays being indexed as follows: 1234 * 1235 * ciss_controllers[] - indexed by logical bus 1236 * ciss_cam_sim[] - indexed by both logical and physical, with physical 1237 * being shifted by 32. 1238 * ciss_logical[][] - indexed by logical bus 1239 * ciss_physical[][] - indexed by physical bus 1240 * 1241 * XXX This is getting more and more hackish. CISS really doesn't play 1242 * well with a standard SCSI model; devices are addressed via magic 1243 * cookies, not via b/t/l addresses. Since there is no way to store 1244 * the cookie in the CAM device object, we have to keep these lookup 1245 * tables handy so that the devices can be found quickly at the cost 1246 * of wasting memory and having a convoluted lookup scheme. This 1247 * driver should probably be converted to block interface. 1248 */ 1249 /* 1250 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy 1251 * controller. A proxy controller is another physical controller 1252 * behind the primary PCI controller. We need to know about this 1253 * so that BMIC commands can be properly targeted. There can be 1254 * proxy controllers attached to a single PCI controller, so 1255 * find the highest numbered one so the array can be properly 1256 * sized. 1257 */ 1258 sc->ciss_max_logical_bus = 1; 1259 for (i = 0; i < nphys; i++) { 1260 if (cll->lun[i].physical.extra_address == 0) { 1261 bus = cll->lun[i].physical.bus; 1262 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1; 1263 } else { 1264 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address); 1265 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus); 1266 } 1267 } 1268 1269 sc->ciss_controllers = 1270 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address), 1271 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1272 1273 if (sc->ciss_controllers == NULL) { 1274 ciss_printf(sc, "Could not allocate memory for controller map\n"); 1275 error = ENOMEM; 1276 goto out; 1277 } 1278 1279 /* setup a map of controller addresses */ 1280 for (i = 0; i < nphys; i++) { 1281 if (cll->lun[i].physical.extra_address == 0) { 1282 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i]; 1283 } 1284 } 1285 1286 sc->ciss_physical = 1287 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *), 1288 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1289 if (sc->ciss_physical == NULL) { 1290 ciss_printf(sc, "Could not allocate memory for physical device map\n"); 1291 error = ENOMEM; 1292 goto out; 1293 } 1294 1295 for (i = 0; i < sc->ciss_max_physical_bus; i++) { 1296 sc->ciss_physical[i] = 1297 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT, 1298 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1299 if (sc->ciss_physical[i] == NULL) { 1300 ciss_printf(sc, "Could not allocate memory for target map\n"); 1301 error = ENOMEM; 1302 goto out; 1303 } 1304 } 1305 1306 ciss_filter_physical(sc, cll); 1307 1308 out: 1309 if (cll != NULL) 1310 free(cll, CISS_MALLOC_CLASS); 1311 1312 return(error); 1313 } 1314 1315 static int 1316 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll) 1317 { 1318 u_int32_t ea; 1319 int i, nphys; 1320 int bus, target; 1321 1322 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1323 for (i = 0; i < nphys; i++) { 1324 if (cll->lun[i].physical.extra_address == 0) 1325 continue; 1326 1327 /* 1328 * Filter out devices that we don't want. Level 3 LUNs could 1329 * probably be supported, but the docs don't give enough of a 1330 * hint to know how. 1331 * 1332 * The mode field of the physical address is likely set to have 1333 * hard disks masked out. Honor it unless the user has overridden 1334 * us with the tunable. We also munge the inquiry data for these 1335 * disks so that they only show up as passthrough devices. Keeping 1336 * them visible in this fashion is useful for doing things like 1337 * flashing firmware. 1338 */ 1339 ea = cll->lun[i].physical.extra_address; 1340 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) || 1341 (CISS_EXTRA_MODE2(ea) == 0x3)) 1342 continue; 1343 if ((ciss_expose_hidden_physical == 0) && 1344 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL)) 1345 continue; 1346 1347 /* 1348 * Note: CISS firmware numbers physical busses starting at '1', not 1349 * '0'. This numbering is internal to the firmware and is only 1350 * used as a hint here. 1351 */ 1352 bus = CISS_EXTRA_BUS2(ea) - 1; 1353 target = CISS_EXTRA_TARGET2(ea); 1354 sc->ciss_physical[bus][target].cp_address = cll->lun[i]; 1355 sc->ciss_physical[bus][target].cp_online = 1; 1356 } 1357 1358 return (0); 1359 } 1360 1361 static int 1362 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1363 { 1364 struct ciss_request *cr; 1365 struct ciss_command *cc; 1366 struct scsi_inquiry *inq; 1367 int error; 1368 int command_status; 1369 1370 cr = NULL; 1371 1372 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry)); 1373 1374 if ((error = ciss_get_request(sc, &cr)) != 0) 1375 goto out; 1376 1377 cc = CISS_FIND_COMMAND(cr); 1378 cr->cr_data = &ld->cl_geometry; 1379 cr->cr_length = sizeof(ld->cl_geometry); 1380 cr->cr_flags = CISS_REQ_DATAIN; 1381 1382 cc->header.address = ld->cl_address; 1383 cc->cdb.cdb_length = 6; 1384 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1385 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1386 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1387 cc->cdb.timeout = 30; 1388 1389 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]); 1390 inq->opcode = INQUIRY; 1391 inq->byte2 = SI_EVPD; 1392 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY; 1393 inq->length = sizeof(ld->cl_geometry); 1394 1395 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1396 ciss_printf(sc, "error getting geometry (%d)\n", error); 1397 goto out; 1398 } 1399 1400 ciss_report_request(cr, &command_status, NULL); 1401 switch(command_status) { 1402 case CISS_CMD_STATUS_SUCCESS: 1403 case CISS_CMD_STATUS_DATA_UNDERRUN: 1404 break; 1405 case CISS_CMD_STATUS_DATA_OVERRUN: 1406 ciss_printf(sc, "WARNING: Data overrun\n"); 1407 break; 1408 default: 1409 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n", 1410 ciss_name_command_status(command_status)); 1411 break; 1412 } 1413 1414 out: 1415 if (cr != NULL) 1416 ciss_release_request(cr); 1417 return(error); 1418 } 1419 /************************************************************************ 1420 * Identify a logical drive, initialise state related to it. 1421 */ 1422 static int 1423 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1424 { 1425 struct ciss_request *cr; 1426 struct ciss_command *cc; 1427 struct ciss_bmic_cdb *cbc; 1428 int error, command_status; 1429 1430 debug_called(1); 1431 1432 cr = NULL; 1433 1434 /* 1435 * Build a BMIC request to fetch the drive ID. 1436 */ 1437 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE, 1438 (void **)&ld->cl_ldrive, 1439 sizeof(*ld->cl_ldrive))) != 0) 1440 goto out; 1441 cc = CISS_FIND_COMMAND(cr); 1442 cc->header.address = *ld->cl_controller; /* target controller */ 1443 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1444 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1445 1446 /* 1447 * Submit the request and wait for it to complete. 1448 */ 1449 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1450 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error); 1451 goto out; 1452 } 1453 1454 /* 1455 * Check response. 1456 */ 1457 ciss_report_request(cr, &command_status, NULL); 1458 switch(command_status) { 1459 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1460 break; 1461 case CISS_CMD_STATUS_DATA_UNDERRUN: 1462 case CISS_CMD_STATUS_DATA_OVERRUN: 1463 ciss_printf(sc, "data over/underrun reading logical drive ID\n"); 1464 default: 1465 ciss_printf(sc, "error reading logical drive ID (%s)\n", 1466 ciss_name_command_status(command_status)); 1467 error = EIO; 1468 goto out; 1469 } 1470 ciss_release_request(cr); 1471 cr = NULL; 1472 1473 /* 1474 * Build a CISS BMIC command to get the logical drive status. 1475 */ 1476 if ((error = ciss_get_ldrive_status(sc, ld)) != 0) 1477 goto out; 1478 1479 /* 1480 * Get the logical drive geometry. 1481 */ 1482 if ((error = ciss_inquiry_logical(sc, ld)) != 0) 1483 goto out; 1484 1485 /* 1486 * Print the drive's basic characteristics. 1487 */ 1488 if (bootverbose) { 1489 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ", 1490 CISS_LUN_TO_BUS(ld->cl_address.logical.lun), 1491 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun), 1492 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance), 1493 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) * 1494 ld->cl_ldrive->block_size)); 1495 1496 ciss_print_ldrive(sc, ld); 1497 } 1498 out: 1499 if (error != 0) { 1500 /* make the drive not-exist */ 1501 ld->cl_status = CISS_LD_NONEXISTENT; 1502 if (ld->cl_ldrive != NULL) { 1503 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 1504 ld->cl_ldrive = NULL; 1505 } 1506 if (ld->cl_lstatus != NULL) { 1507 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 1508 ld->cl_lstatus = NULL; 1509 } 1510 } 1511 if (cr != NULL) 1512 ciss_release_request(cr); 1513 1514 return(error); 1515 } 1516 1517 /************************************************************************ 1518 * Get status for a logical drive. 1519 * 1520 * XXX should we also do this in response to Test Unit Ready? 1521 */ 1522 static int 1523 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld) 1524 { 1525 struct ciss_request *cr; 1526 struct ciss_command *cc; 1527 struct ciss_bmic_cdb *cbc; 1528 int error, command_status; 1529 1530 /* 1531 * Build a CISS BMIC command to get the logical drive status. 1532 */ 1533 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS, 1534 (void **)&ld->cl_lstatus, 1535 sizeof(*ld->cl_lstatus))) != 0) 1536 goto out; 1537 cc = CISS_FIND_COMMAND(cr); 1538 cc->header.address = *ld->cl_controller; /* target controller */ 1539 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1540 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1541 1542 /* 1543 * Submit the request and wait for it to complete. 1544 */ 1545 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1546 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); 1547 goto out; 1548 } 1549 1550 /* 1551 * Check response. 1552 */ 1553 ciss_report_request(cr, &command_status, NULL); 1554 switch(command_status) { 1555 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1556 break; 1557 case CISS_CMD_STATUS_DATA_UNDERRUN: 1558 case CISS_CMD_STATUS_DATA_OVERRUN: 1559 ciss_printf(sc, "data over/underrun reading logical drive status\n"); 1560 default: 1561 ciss_printf(sc, "error reading logical drive status (%s)\n", 1562 ciss_name_command_status(command_status)); 1563 error = EIO; 1564 goto out; 1565 } 1566 1567 /* 1568 * Set the drive's summary status based on the returned status. 1569 * 1570 * XXX testing shows that a failed JBOD drive comes back at next 1571 * boot in "queued for expansion" mode. WTF? 1572 */ 1573 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status); 1574 1575 out: 1576 if (cr != NULL) 1577 ciss_release_request(cr); 1578 return(error); 1579 } 1580 1581 /************************************************************************ 1582 * Notify the adapter of a config update. 1583 */ 1584 static int 1585 ciss_update_config(struct ciss_softc *sc) 1586 { 1587 int i; 1588 1589 debug_called(1); 1590 1591 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE); 1592 for (i = 0; i < 1000; i++) { 1593 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) & 1594 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) { 1595 return(0); 1596 } 1597 DELAY(1000); 1598 } 1599 return(1); 1600 } 1601 1602 /************************************************************************ 1603 * Accept new media into a logical drive. 1604 * 1605 * XXX The drive has previously been offline; it would be good if we 1606 * could make sure it's not open right now. 1607 */ 1608 static int 1609 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld) 1610 { 1611 struct ciss_request *cr; 1612 struct ciss_command *cc; 1613 struct ciss_bmic_cdb *cbc; 1614 int command_status; 1615 int error = 0, ldrive; 1616 1617 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1618 1619 debug(0, "bringing logical drive %d back online"); 1620 1621 /* 1622 * Build a CISS BMIC command to bring the drive back online. 1623 */ 1624 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA, 1625 NULL, 0)) != 0) 1626 goto out; 1627 cc = CISS_FIND_COMMAND(cr); 1628 cc->header.address = *ld->cl_controller; /* target controller */ 1629 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1630 cbc->log_drive = ldrive; 1631 1632 /* 1633 * Submit the request and wait for it to complete. 1634 */ 1635 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1636 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error); 1637 goto out; 1638 } 1639 1640 /* 1641 * Check response. 1642 */ 1643 ciss_report_request(cr, &command_status, NULL); 1644 switch(command_status) { 1645 case CISS_CMD_STATUS_SUCCESS: /* all OK */ 1646 /* we should get a logical drive status changed event here */ 1647 break; 1648 default: 1649 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n", 1650 ciss_name_command_status(command_status)); 1651 break; 1652 } 1653 1654 out: 1655 if (cr != NULL) 1656 ciss_release_request(cr); 1657 return(error); 1658 } 1659 1660 /************************************************************************ 1661 * Release adapter resources. 1662 */ 1663 static void 1664 ciss_free(struct ciss_softc *sc) 1665 { 1666 struct ciss_request *cr; 1667 int i, j; 1668 1669 debug_called(1); 1670 1671 /* we're going away */ 1672 sc->ciss_flags |= CISS_FLAG_ABORTING; 1673 1674 /* terminate the periodic heartbeat routine */ 1675 callout_stop(&sc->ciss_periodic); 1676 1677 /* cancel the Event Notify chain */ 1678 ciss_notify_abort(sc); 1679 1680 ciss_kill_notify_thread(sc); 1681 1682 /* disconnect from CAM */ 1683 if (sc->ciss_cam_sim) { 1684 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 1685 if (sc->ciss_cam_sim[i]) { 1686 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1687 cam_sim_free(sc->ciss_cam_sim[i], 0); 1688 } 1689 } 1690 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 1691 CISS_PHYSICAL_BASE; i++) { 1692 if (sc->ciss_cam_sim[i]) { 1693 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1694 cam_sim_free(sc->ciss_cam_sim[i], 0); 1695 } 1696 } 1697 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS); 1698 } 1699 if (sc->ciss_cam_devq) 1700 cam_simq_free(sc->ciss_cam_devq); 1701 1702 /* remove the control device */ 1703 mtx_unlock(&sc->ciss_mtx); 1704 if (sc->ciss_dev_t != NULL) 1705 destroy_dev(sc->ciss_dev_t); 1706 1707 /* Final cleanup of the callout. */ 1708 callout_drain(&sc->ciss_periodic); 1709 mtx_destroy(&sc->ciss_mtx); 1710 1711 /* free the controller data */ 1712 if (sc->ciss_id != NULL) 1713 free(sc->ciss_id, CISS_MALLOC_CLASS); 1714 1715 /* release I/O resources */ 1716 if (sc->ciss_regs_resource != NULL) 1717 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1718 sc->ciss_regs_rid, sc->ciss_regs_resource); 1719 if (sc->ciss_cfg_resource != NULL) 1720 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1721 sc->ciss_cfg_rid, sc->ciss_cfg_resource); 1722 if (sc->ciss_intr != NULL) 1723 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr); 1724 if (sc->ciss_irq_resource != NULL) 1725 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ, 1726 sc->ciss_irq_rid, sc->ciss_irq_resource); 1727 1728 /* destroy DMA tags */ 1729 if (sc->ciss_parent_dmat) 1730 bus_dma_tag_destroy(sc->ciss_parent_dmat); 1731 1732 while ((cr = ciss_dequeue_free(sc)) != NULL) 1733 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap); 1734 if (sc->ciss_buffer_dmat) 1735 bus_dma_tag_destroy(sc->ciss_buffer_dmat); 1736 1737 /* destroy command memory and DMA tag */ 1738 if (sc->ciss_command != NULL) { 1739 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map); 1740 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map); 1741 } 1742 if (sc->ciss_command_dmat) 1743 bus_dma_tag_destroy(sc->ciss_command_dmat); 1744 1745 if (sc->ciss_logical) { 1746 for (i = 0; i <= sc->ciss_max_logical_bus; i++) { 1747 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 1748 if (sc->ciss_logical[i][j].cl_ldrive) 1749 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS); 1750 if (sc->ciss_logical[i][j].cl_lstatus) 1751 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS); 1752 } 1753 free(sc->ciss_logical[i], CISS_MALLOC_CLASS); 1754 } 1755 free(sc->ciss_logical, CISS_MALLOC_CLASS); 1756 } 1757 1758 if (sc->ciss_physical) { 1759 for (i = 0; i < sc->ciss_max_physical_bus; i++) 1760 free(sc->ciss_physical[i], CISS_MALLOC_CLASS); 1761 free(sc->ciss_physical, CISS_MALLOC_CLASS); 1762 } 1763 1764 if (sc->ciss_controllers) 1765 free(sc->ciss_controllers, CISS_MALLOC_CLASS); 1766 1767 } 1768 1769 /************************************************************************ 1770 * Give a command to the adapter. 1771 * 1772 * Note that this uses the simple transport layer directly. If we 1773 * want to add support for other layers, we'll need a switch of some 1774 * sort. 1775 * 1776 * Note that the simple transport layer has no way of refusing a 1777 * command; we only have as many request structures as the adapter 1778 * supports commands, so we don't have to check (this presumes that 1779 * the adapter can handle commands as fast as we throw them at it). 1780 */ 1781 static int 1782 ciss_start(struct ciss_request *cr) 1783 { 1784 struct ciss_command *cc; /* XXX debugging only */ 1785 int error; 1786 1787 cc = CISS_FIND_COMMAND(cr); 1788 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag); 1789 1790 /* 1791 * Map the request's data. 1792 */ 1793 if ((error = ciss_map_request(cr))) 1794 return(error); 1795 1796 #if 0 1797 ciss_print_request(cr); 1798 #endif 1799 1800 return(0); 1801 } 1802 1803 /************************************************************************ 1804 * Fetch completed request(s) from the adapter, queue them for 1805 * completion handling. 1806 * 1807 * Note that this uses the simple transport layer directly. If we 1808 * want to add support for other layers, we'll need a switch of some 1809 * sort. 1810 * 1811 * Note that the simple transport mechanism does not require any 1812 * reentrancy protection; the OPQ read is atomic. If there is a 1813 * chance of a race with something else that might move the request 1814 * off the busy list, then we will have to lock against that 1815 * (eg. timeouts, etc.) 1816 */ 1817 static void 1818 ciss_done(struct ciss_softc *sc) 1819 { 1820 struct ciss_request *cr; 1821 struct ciss_command *cc; 1822 u_int32_t tag, index; 1823 int complete; 1824 1825 debug_called(3); 1826 1827 /* 1828 * Loop quickly taking requests from the adapter and moving them 1829 * from the busy queue to the completed queue. 1830 */ 1831 complete = 0; 1832 for (;;) { 1833 1834 /* see if the OPQ contains anything */ 1835 if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc)) 1836 break; 1837 1838 tag = CISS_TL_SIMPLE_FETCH_CMD(sc); 1839 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY) 1840 break; 1841 index = tag >> 2; 1842 debug(2, "completed command %d%s", index, 1843 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); 1844 if (index >= sc->ciss_max_requests) { 1845 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); 1846 continue; 1847 } 1848 cr = &(sc->ciss_request[index]); 1849 cc = CISS_FIND_COMMAND(cr); 1850 cc->header.host_tag = tag; /* not updated by adapter */ 1851 if (ciss_remove_busy(cr)) { 1852 /* assume this is garbage out of the adapter */ 1853 ciss_printf(sc, "completed nonbusy request %d\n", index); 1854 } else { 1855 ciss_enqueue_complete(cr); 1856 } 1857 complete = 1; 1858 } 1859 1860 /* 1861 * Invoke completion processing. If we can defer this out of 1862 * interrupt context, that'd be good. 1863 */ 1864 if (complete) 1865 ciss_complete(sc); 1866 } 1867 1868 /************************************************************************ 1869 * Take an interrupt from the adapter. 1870 */ 1871 static void 1872 ciss_intr(void *arg) 1873 { 1874 struct ciss_softc *sc = (struct ciss_softc *)arg; 1875 1876 /* 1877 * The only interrupt we recognise indicates that there are 1878 * entries in the outbound post queue. 1879 */ 1880 mtx_lock(&sc->ciss_mtx); 1881 ciss_done(sc); 1882 mtx_unlock(&sc->ciss_mtx); 1883 } 1884 1885 /************************************************************************ 1886 * Process completed requests. 1887 * 1888 * Requests can be completed in three fashions: 1889 * 1890 * - by invoking a callback function (cr_complete is non-null) 1891 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set) 1892 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context 1893 */ 1894 static void 1895 ciss_complete(struct ciss_softc *sc) 1896 { 1897 struct ciss_request *cr; 1898 1899 debug_called(2); 1900 1901 /* 1902 * Loop taking requests off the completed queue and performing 1903 * completion processing on them. 1904 */ 1905 for (;;) { 1906 if ((cr = ciss_dequeue_complete(sc)) == NULL) 1907 break; 1908 ciss_unmap_request(cr); 1909 1910 /* 1911 * If the request has a callback, invoke it. 1912 */ 1913 if (cr->cr_complete != NULL) { 1914 cr->cr_complete(cr); 1915 continue; 1916 } 1917 1918 /* 1919 * If someone is sleeping on this request, wake them up. 1920 */ 1921 if (cr->cr_flags & CISS_REQ_SLEEP) { 1922 cr->cr_flags &= ~CISS_REQ_SLEEP; 1923 wakeup(cr); 1924 continue; 1925 } 1926 1927 /* 1928 * If someone is polling this request for completion, signal. 1929 */ 1930 if (cr->cr_flags & CISS_REQ_POLL) { 1931 cr->cr_flags &= ~CISS_REQ_POLL; 1932 continue; 1933 } 1934 1935 /* 1936 * Give up and throw the request back on the free queue. This 1937 * should never happen; resources will probably be lost. 1938 */ 1939 ciss_printf(sc, "WARNING: completed command with no submitter\n"); 1940 ciss_enqueue_free(cr); 1941 } 1942 } 1943 1944 /************************************************************************ 1945 * Report on the completion status of a request, and pass back SCSI 1946 * and command status values. 1947 */ 1948 static int 1949 ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status) 1950 { 1951 struct ciss_command *cc; 1952 struct ciss_error_info *ce; 1953 1954 debug_called(2); 1955 1956 cc = CISS_FIND_COMMAND(cr); 1957 ce = (struct ciss_error_info *)&(cc->sg[0]); 1958 1959 /* 1960 * We don't consider data under/overrun an error for the Report 1961 * Logical/Physical LUNs commands. 1962 */ 1963 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) && 1964 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) || 1965 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) && 1966 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || 1967 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) || 1968 (cc->cdb.cdb[0] == INQUIRY))) { 1969 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR; 1970 debug(2, "ignoring irrelevant under/overrun error"); 1971 } 1972 1973 /* 1974 * Check the command's error bit, if clear, there's no status and 1975 * everything is OK. 1976 */ 1977 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) { 1978 if (scsi_status != NULL) 1979 *scsi_status = SCSI_STATUS_OK; 1980 if (command_status != NULL) 1981 *command_status = CISS_CMD_STATUS_SUCCESS; 1982 return(0); 1983 } else { 1984 if (command_status != NULL) 1985 *command_status = ce->command_status; 1986 if (scsi_status != NULL) { 1987 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) { 1988 *scsi_status = ce->scsi_status; 1989 } else { 1990 *scsi_status = -1; 1991 } 1992 } 1993 if (bootverbose) 1994 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n", 1995 ce->command_status, ciss_name_command_status(ce->command_status), 1996 ce->scsi_status); 1997 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) { 1998 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x\n", 1999 ce->additional_error_info.invalid_command.offense_size, 2000 ce->additional_error_info.invalid_command.offense_offset, 2001 ce->additional_error_info.invalid_command.offense_value); 2002 } 2003 } 2004 #if 0 2005 ciss_print_request(cr); 2006 #endif 2007 return(1); 2008 } 2009 2010 /************************************************************************ 2011 * Issue a request and don't return until it's completed. 2012 * 2013 * Depending on adapter status, we may poll or sleep waiting for 2014 * completion. 2015 */ 2016 static int 2017 ciss_synch_request(struct ciss_request *cr, int timeout) 2018 { 2019 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) { 2020 return(ciss_wait_request(cr, timeout)); 2021 } else { 2022 return(ciss_poll_request(cr, timeout)); 2023 } 2024 } 2025 2026 /************************************************************************ 2027 * Issue a request and poll for completion. 2028 * 2029 * Timeout in milliseconds. 2030 */ 2031 static int 2032 ciss_poll_request(struct ciss_request *cr, int timeout) 2033 { 2034 int error; 2035 2036 debug_called(2); 2037 2038 cr->cr_flags |= CISS_REQ_POLL; 2039 if ((error = ciss_start(cr)) != 0) 2040 return(error); 2041 2042 do { 2043 ciss_done(cr->cr_sc); 2044 if (!(cr->cr_flags & CISS_REQ_POLL)) 2045 return(0); 2046 DELAY(1000); 2047 } while (timeout-- >= 0); 2048 return(EWOULDBLOCK); 2049 } 2050 2051 /************************************************************************ 2052 * Issue a request and sleep waiting for completion. 2053 * 2054 * Timeout in milliseconds. Note that a spurious wakeup will reset 2055 * the timeout. 2056 */ 2057 static int 2058 ciss_wait_request(struct ciss_request *cr, int timeout) 2059 { 2060 int s, error; 2061 2062 debug_called(2); 2063 2064 cr->cr_flags |= CISS_REQ_SLEEP; 2065 if ((error = ciss_start(cr)) != 0) 2066 return(error); 2067 2068 s = splcam(); 2069 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) { 2070 error = msleep(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ", (timeout * hz) / 1000); 2071 } 2072 splx(s); 2073 return(error); 2074 } 2075 2076 #if 0 2077 /************************************************************************ 2078 * Abort a request. Note that a potential exists here to race the 2079 * request being completed; the caller must deal with this. 2080 */ 2081 static int 2082 ciss_abort_request(struct ciss_request *ar) 2083 { 2084 struct ciss_request *cr; 2085 struct ciss_command *cc; 2086 struct ciss_message_cdb *cmc; 2087 int error; 2088 2089 debug_called(1); 2090 2091 /* get a request */ 2092 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0) 2093 return(error); 2094 2095 /* build the abort command */ 2096 cc = CISS_FIND_COMMAND(cr); 2097 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */ 2098 cc->header.address.physical.target = 0; 2099 cc->header.address.physical.bus = 0; 2100 cc->cdb.cdb_length = sizeof(*cmc); 2101 cc->cdb.type = CISS_CDB_TYPE_MESSAGE; 2102 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2103 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2104 cc->cdb.timeout = 30; 2105 2106 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]); 2107 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT; 2108 cmc->type = CISS_MESSAGE_ABORT_TASK; 2109 cmc->abort_tag = ar->cr_tag; /* endianness?? */ 2110 2111 /* 2112 * Send the request and wait for a response. If we believe we 2113 * aborted the request OK, clear the flag that indicates it's 2114 * running. 2115 */ 2116 error = ciss_synch_request(cr, 35 * 1000); 2117 if (!error) 2118 error = ciss_report_request(cr, NULL, NULL); 2119 ciss_release_request(cr); 2120 2121 return(error); 2122 } 2123 #endif 2124 2125 2126 /************************************************************************ 2127 * Fetch and initialise a request 2128 */ 2129 static int 2130 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp) 2131 { 2132 struct ciss_request *cr; 2133 2134 debug_called(2); 2135 2136 /* 2137 * Get a request and clean it up. 2138 */ 2139 if ((cr = ciss_dequeue_free(sc)) == NULL) 2140 return(ENOMEM); 2141 2142 cr->cr_data = NULL; 2143 cr->cr_flags = 0; 2144 cr->cr_complete = NULL; 2145 cr->cr_private = NULL; 2146 2147 ciss_preen_command(cr); 2148 *crp = cr; 2149 return(0); 2150 } 2151 2152 static void 2153 ciss_preen_command(struct ciss_request *cr) 2154 { 2155 struct ciss_command *cc; 2156 u_int32_t cmdphys; 2157 2158 /* 2159 * Clean up the command structure. 2160 * 2161 * Note that we set up the error_info structure here, since the 2162 * length can be overwritten by any command. 2163 */ 2164 cc = CISS_FIND_COMMAND(cr); 2165 cc->header.sg_in_list = 0; /* kinda inefficient this way */ 2166 cc->header.sg_total = 0; 2167 cc->header.host_tag = cr->cr_tag << 2; 2168 cc->header.host_tag_zeroes = 0; 2169 cmdphys = CISS_FIND_COMMANDPHYS(cr); 2170 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command); 2171 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command); 2172 } 2173 2174 /************************************************************************ 2175 * Release a request to the free list. 2176 */ 2177 static void 2178 ciss_release_request(struct ciss_request *cr) 2179 { 2180 struct ciss_softc *sc; 2181 2182 debug_called(2); 2183 2184 sc = cr->cr_sc; 2185 2186 /* release the request to the free queue */ 2187 ciss_requeue_free(cr); 2188 } 2189 2190 /************************************************************************ 2191 * Allocate a request that will be used to send a BMIC command. Do some 2192 * of the common setup here to avoid duplicating it everywhere else. 2193 */ 2194 static int 2195 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 2196 int opcode, void **bufp, size_t bufsize) 2197 { 2198 struct ciss_request *cr; 2199 struct ciss_command *cc; 2200 struct ciss_bmic_cdb *cbc; 2201 void *buf; 2202 int error; 2203 int dataout; 2204 2205 debug_called(2); 2206 2207 cr = NULL; 2208 buf = NULL; 2209 2210 /* 2211 * Get a request. 2212 */ 2213 if ((error = ciss_get_request(sc, &cr)) != 0) 2214 goto out; 2215 2216 /* 2217 * Allocate data storage if requested, determine the data direction. 2218 */ 2219 dataout = 0; 2220 if ((bufsize > 0) && (bufp != NULL)) { 2221 if (*bufp == NULL) { 2222 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 2223 error = ENOMEM; 2224 goto out; 2225 } 2226 } else { 2227 buf = *bufp; 2228 dataout = 1; /* we are given a buffer, so we are writing */ 2229 } 2230 } 2231 2232 /* 2233 * Build a CISS BMIC command to get the logical drive ID. 2234 */ 2235 cr->cr_data = buf; 2236 cr->cr_length = bufsize; 2237 if (!dataout) 2238 cr->cr_flags = CISS_REQ_DATAIN; 2239 2240 cc = CISS_FIND_COMMAND(cr); 2241 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 2242 cc->header.address.physical.bus = 0; 2243 cc->header.address.physical.target = 0; 2244 cc->cdb.cdb_length = sizeof(*cbc); 2245 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2246 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2247 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ; 2248 cc->cdb.timeout = 0; 2249 2250 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 2251 bzero(cbc, sizeof(*cbc)); 2252 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ; 2253 cbc->bmic_opcode = opcode; 2254 cbc->size = htons((u_int16_t)bufsize); 2255 2256 out: 2257 if (error) { 2258 if (cr != NULL) 2259 ciss_release_request(cr); 2260 } else { 2261 *crp = cr; 2262 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 2263 *bufp = buf; 2264 } 2265 return(error); 2266 } 2267 2268 /************************************************************************ 2269 * Handle a command passed in from userspace. 2270 */ 2271 static int 2272 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc) 2273 { 2274 struct ciss_request *cr; 2275 struct ciss_command *cc; 2276 struct ciss_error_info *ce; 2277 int error = 0; 2278 2279 debug_called(1); 2280 2281 cr = NULL; 2282 2283 /* 2284 * Get a request. 2285 */ 2286 while (ciss_get_request(sc, &cr) != 0) 2287 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz); 2288 cc = CISS_FIND_COMMAND(cr); 2289 2290 /* 2291 * Allocate an in-kernel databuffer if required, copy in user data. 2292 */ 2293 cr->cr_length = ioc->buf_size; 2294 if (ioc->buf_size > 0) { 2295 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 2296 error = ENOMEM; 2297 goto out; 2298 } 2299 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) { 2300 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2301 goto out; 2302 } 2303 } 2304 2305 /* 2306 * Build the request based on the user command. 2307 */ 2308 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address)); 2309 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb)); 2310 2311 /* XXX anything else to populate here? */ 2312 2313 /* 2314 * Run the command. 2315 */ 2316 if ((error = ciss_synch_request(cr, 60 * 1000))) { 2317 debug(0, "request failed - %d", error); 2318 goto out; 2319 } 2320 2321 /* 2322 * Check to see if the command succeeded. 2323 */ 2324 ce = (struct ciss_error_info *)&(cc->sg[0]); 2325 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0) 2326 bzero(ce, sizeof(*ce)); 2327 2328 /* 2329 * Copy the results back to the user. 2330 */ 2331 bcopy(ce, &ioc->error_info, sizeof(*ce)); 2332 if ((ioc->buf_size > 0) && 2333 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) { 2334 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2335 goto out; 2336 } 2337 2338 /* done OK */ 2339 error = 0; 2340 2341 out: 2342 if ((cr != NULL) && (cr->cr_data != NULL)) 2343 free(cr->cr_data, CISS_MALLOC_CLASS); 2344 if (cr != NULL) 2345 ciss_release_request(cr); 2346 return(error); 2347 } 2348 2349 /************************************************************************ 2350 * Map a request into bus-visible space, initialise the scatter/gather 2351 * list. 2352 */ 2353 static int 2354 ciss_map_request(struct ciss_request *cr) 2355 { 2356 struct ciss_softc *sc; 2357 int error = 0; 2358 2359 debug_called(2); 2360 2361 sc = cr->cr_sc; 2362 2363 /* check that mapping is necessary */ 2364 if (cr->cr_flags & CISS_REQ_MAPPED) 2365 return(0); 2366 2367 cr->cr_flags |= CISS_REQ_MAPPED; 2368 2369 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2370 BUS_DMASYNC_PREWRITE); 2371 2372 if (cr->cr_data != NULL) { 2373 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, 2374 cr->cr_data, cr->cr_length, 2375 ciss_request_map_helper, cr, 0); 2376 if (error != 0) 2377 return (error); 2378 } else { 2379 /* 2380 * Post the command to the adapter. 2381 */ 2382 ciss_enqueue_busy(cr); 2383 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2384 } 2385 2386 return(0); 2387 } 2388 2389 static void 2390 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2391 { 2392 struct ciss_command *cc; 2393 struct ciss_request *cr; 2394 struct ciss_softc *sc; 2395 int i; 2396 2397 debug_called(2); 2398 2399 cr = (struct ciss_request *)arg; 2400 sc = cr->cr_sc; 2401 cc = CISS_FIND_COMMAND(cr); 2402 2403 for (i = 0; i < nseg; i++) { 2404 cc->sg[i].address = segs[i].ds_addr; 2405 cc->sg[i].length = segs[i].ds_len; 2406 cc->sg[i].extension = 0; 2407 } 2408 /* we leave the s/g table entirely within the command */ 2409 cc->header.sg_in_list = nseg; 2410 cc->header.sg_total = nseg; 2411 2412 if (cr->cr_flags & CISS_REQ_DATAIN) 2413 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD); 2414 if (cr->cr_flags & CISS_REQ_DATAOUT) 2415 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE); 2416 2417 /* 2418 * Post the command to the adapter. 2419 */ 2420 ciss_enqueue_busy(cr); 2421 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2422 } 2423 2424 /************************************************************************ 2425 * Unmap a request from bus-visible space. 2426 */ 2427 static void 2428 ciss_unmap_request(struct ciss_request *cr) 2429 { 2430 struct ciss_softc *sc; 2431 2432 debug_called(2); 2433 2434 sc = cr->cr_sc; 2435 2436 /* check that unmapping is necessary */ 2437 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0) 2438 return; 2439 2440 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2441 BUS_DMASYNC_POSTWRITE); 2442 2443 if (cr->cr_data == NULL) 2444 goto out; 2445 2446 if (cr->cr_flags & CISS_REQ_DATAIN) 2447 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD); 2448 if (cr->cr_flags & CISS_REQ_DATAOUT) 2449 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE); 2450 2451 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap); 2452 out: 2453 cr->cr_flags &= ~CISS_REQ_MAPPED; 2454 } 2455 2456 /************************************************************************ 2457 * Attach the driver to CAM. 2458 * 2459 * We put all the logical drives on a single SCSI bus. 2460 */ 2461 static int 2462 ciss_cam_init(struct ciss_softc *sc) 2463 { 2464 int i, maxbus; 2465 2466 debug_called(1); 2467 2468 /* 2469 * Allocate a devq. We can reuse this for the masked physical 2470 * devices if we decide to export these as well. 2471 */ 2472 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) { 2473 ciss_printf(sc, "can't allocate CAM SIM queue\n"); 2474 return(ENOMEM); 2475 } 2476 2477 /* 2478 * Create a SIM. 2479 * 2480 * This naturally wastes a bit of memory. The alternative is to allocate 2481 * and register each bus as it is found, and then track them on a linked 2482 * list. Unfortunately, the driver has a few places where it needs to 2483 * look up the SIM based solely on bus number, and it's unclear whether 2484 * a list traversal would work for these situations. 2485 */ 2486 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus + 2487 CISS_PHYSICAL_BASE); 2488 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*), 2489 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 2490 if (sc->ciss_cam_sim == NULL) { 2491 ciss_printf(sc, "can't allocate memory for controller SIM\n"); 2492 return(ENOMEM); 2493 } 2494 2495 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 2496 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2497 "ciss", sc, 2498 device_get_unit(sc->ciss_dev), 2499 &sc->ciss_mtx, 2500 sc->ciss_max_requests - 2, 2501 sc->ciss_max_requests - 2, 2502 sc->ciss_cam_devq)) == NULL) { 2503 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2504 return(ENOMEM); 2505 } 2506 2507 /* 2508 * Register bus with this SIM. 2509 */ 2510 mtx_lock(&sc->ciss_mtx); 2511 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) { 2512 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) { 2513 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2514 mtx_unlock(&sc->ciss_mtx); 2515 return (ENXIO); 2516 } 2517 } 2518 mtx_unlock(&sc->ciss_mtx); 2519 } 2520 2521 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2522 CISS_PHYSICAL_BASE; i++) { 2523 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2524 "ciss", sc, 2525 device_get_unit(sc->ciss_dev), 2526 &sc->ciss_mtx, 1, 2527 sc->ciss_max_requests - 2, 2528 sc->ciss_cam_devq)) == NULL) { 2529 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2530 return (ENOMEM); 2531 } 2532 2533 mtx_lock(&sc->ciss_mtx); 2534 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) { 2535 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2536 mtx_unlock(&sc->ciss_mtx); 2537 return (ENXIO); 2538 } 2539 mtx_unlock(&sc->ciss_mtx); 2540 } 2541 2542 /* 2543 * Initiate a rescan of the bus. 2544 */ 2545 mtx_lock(&sc->ciss_mtx); 2546 ciss_cam_rescan_all(sc); 2547 mtx_unlock(&sc->ciss_mtx); 2548 2549 return(0); 2550 } 2551 2552 /************************************************************************ 2553 * Initiate a rescan of the 'logical devices' SIM 2554 */ 2555 static void 2556 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target) 2557 { 2558 struct cam_path *path; 2559 union ccb *ccb; 2560 2561 debug_called(1); 2562 2563 if ((ccb = malloc(sizeof(union ccb), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 2564 ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); 2565 return; 2566 } 2567 2568 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]), 2569 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 2570 ciss_printf(sc, "rescan failed (can't create path)\n"); 2571 free(ccb, CISS_MALLOC_CLASS); 2572 return; 2573 } 2574 2575 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/); 2576 ccb->ccb_h.func_code = XPT_SCAN_BUS; 2577 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback; 2578 ccb->crcn.flags = CAM_FLAG_NONE; 2579 xpt_action(ccb); 2580 2581 /* scan is now in progress */ 2582 } 2583 2584 static void 2585 ciss_cam_rescan_all(struct ciss_softc *sc) 2586 { 2587 int i; 2588 2589 /* Rescan the logical buses */ 2590 for (i = 0; i < sc->ciss_max_logical_bus; i++) 2591 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2592 /* Rescan the physical buses */ 2593 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2594 CISS_PHYSICAL_BASE; i++) 2595 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2596 } 2597 2598 static void 2599 ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2600 { 2601 xpt_free_path(ccb->ccb_h.path); 2602 free(ccb, CISS_MALLOC_CLASS); 2603 } 2604 2605 /************************************************************************ 2606 * Handle requests coming from CAM 2607 */ 2608 static void 2609 ciss_cam_action(struct cam_sim *sim, union ccb *ccb) 2610 { 2611 struct ciss_softc *sc; 2612 struct ccb_scsiio *csio; 2613 int bus, target; 2614 int physical; 2615 2616 sc = cam_sim_softc(sim); 2617 bus = cam_sim_bus(sim); 2618 csio = (struct ccb_scsiio *)&ccb->csio; 2619 target = csio->ccb_h.target_id; 2620 physical = CISS_IS_PHYSICAL(bus); 2621 2622 switch (ccb->ccb_h.func_code) { 2623 2624 /* perform SCSI I/O */ 2625 case XPT_SCSI_IO: 2626 if (!ciss_cam_action_io(sim, csio)) 2627 return; 2628 break; 2629 2630 /* perform geometry calculations */ 2631 case XPT_CALC_GEOMETRY: 2632 { 2633 struct ccb_calc_geometry *ccg = &ccb->ccg; 2634 struct ciss_ldrive *ld; 2635 2636 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2637 2638 ld = NULL; 2639 if (!physical) 2640 ld = &sc->ciss_logical[bus][target]; 2641 2642 /* 2643 * Use the cached geometry settings unless the fault tolerance 2644 * is invalid. 2645 */ 2646 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) { 2647 u_int32_t secs_per_cylinder; 2648 2649 ccg->heads = 255; 2650 ccg->secs_per_track = 32; 2651 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2652 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2653 } else { 2654 ccg->heads = ld->cl_geometry.heads; 2655 ccg->secs_per_track = ld->cl_geometry.sectors; 2656 ccg->cylinders = ntohs(ld->cl_geometry.cylinders); 2657 } 2658 ccb->ccb_h.status = CAM_REQ_CMP; 2659 break; 2660 } 2661 2662 /* handle path attribute inquiry */ 2663 case XPT_PATH_INQ: 2664 { 2665 struct ccb_pathinq *cpi = &ccb->cpi; 2666 2667 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2668 2669 cpi->version_num = 1; 2670 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */ 2671 cpi->target_sprt = 0; 2672 cpi->hba_misc = 0; 2673 cpi->max_target = CISS_MAX_LOGICAL; 2674 cpi->max_lun = 0; /* 'logical drive' channel only */ 2675 cpi->initiator_id = CISS_MAX_LOGICAL; 2676 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2677 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN); 2678 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2679 cpi->unit_number = cam_sim_unit(sim); 2680 cpi->bus_id = cam_sim_bus(sim); 2681 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2682 cpi->transport = XPORT_SPI; 2683 cpi->transport_version = 2; 2684 cpi->protocol = PROTO_SCSI; 2685 cpi->protocol_version = SCSI_REV_2; 2686 ccb->ccb_h.status = CAM_REQ_CMP; 2687 break; 2688 } 2689 2690 case XPT_GET_TRAN_SETTINGS: 2691 { 2692 struct ccb_trans_settings *cts = &ccb->cts; 2693 int bus, target; 2694 struct ccb_trans_settings_spi *spi = 2695 &cts->xport_specific.spi; 2696 2697 bus = cam_sim_bus(sim); 2698 target = cts->ccb_h.target_id; 2699 2700 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2701 /* disconnect always OK */ 2702 cts->protocol = PROTO_SCSI; 2703 cts->protocol_version = SCSI_REV_2; 2704 cts->transport = XPORT_SPI; 2705 cts->transport_version = 2; 2706 2707 spi->valid = CTS_SPI_VALID_DISC; 2708 spi->flags = CTS_SPI_FLAGS_DISC_ENB; 2709 2710 cts->ccb_h.status = CAM_REQ_CMP; 2711 break; 2712 } 2713 2714 default: /* we can't do this */ 2715 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2716 ccb->ccb_h.status = CAM_REQ_INVALID; 2717 break; 2718 } 2719 2720 xpt_done(ccb); 2721 } 2722 2723 /************************************************************************ 2724 * Handle a CAM SCSI I/O request. 2725 */ 2726 static int 2727 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2728 { 2729 struct ciss_softc *sc; 2730 int bus, target; 2731 struct ciss_request *cr; 2732 struct ciss_command *cc; 2733 int error; 2734 2735 sc = cam_sim_softc(sim); 2736 bus = cam_sim_bus(sim); 2737 target = csio->ccb_h.target_id; 2738 2739 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2740 2741 /* check that the CDB pointer is not to a physical address */ 2742 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2743 debug(3, " CDB pointer is to physical address"); 2744 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2745 } 2746 2747 /* if there is data transfer, it must be to/from a virtual address */ 2748 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2749 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2750 debug(3, " data pointer is to physical address"); 2751 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2752 } 2753 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2754 debug(3, " data has premature s/g setup"); 2755 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2756 } 2757 } 2758 2759 /* abandon aborted ccbs or those that have failed validation */ 2760 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2761 debug(3, "abandoning CCB due to abort/validation failure"); 2762 return(EINVAL); 2763 } 2764 2765 /* handle emulation of some SCSI commands ourself */ 2766 if (ciss_cam_emulate(sc, csio)) 2767 return(0); 2768 2769 /* 2770 * Get a request to manage this command. If we can't, return the 2771 * ccb, freeze the queue and flag so that we unfreeze it when a 2772 * request completes. 2773 */ 2774 if ((error = ciss_get_request(sc, &cr)) != 0) { 2775 xpt_freeze_simq(sim, 1); 2776 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2777 return(error); 2778 } 2779 2780 /* 2781 * Build the command. 2782 */ 2783 cc = CISS_FIND_COMMAND(cr); 2784 cr->cr_data = csio->data_ptr; 2785 cr->cr_length = csio->dxfer_len; 2786 cr->cr_complete = ciss_cam_complete; 2787 cr->cr_private = csio; 2788 2789 /* 2790 * Target the right logical volume. 2791 */ 2792 if (CISS_IS_PHYSICAL(bus)) 2793 cc->header.address = 2794 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address; 2795 else 2796 cc->header.address = 2797 sc->ciss_logical[bus][target].cl_address; 2798 cc->cdb.cdb_length = csio->cdb_len; 2799 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2800 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */ 2801 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2802 cr->cr_flags = CISS_REQ_DATAOUT; 2803 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; 2804 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 2805 cr->cr_flags = CISS_REQ_DATAIN; 2806 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2807 } else { 2808 cr->cr_flags = 0; 2809 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2810 } 2811 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1; 2812 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2813 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len); 2814 } else { 2815 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len); 2816 } 2817 2818 /* 2819 * Submit the request to the adapter. 2820 * 2821 * Note that this may fail if we're unable to map the request (and 2822 * if we ever learn a transport layer other than simple, may fail 2823 * if the adapter rejects the command). 2824 */ 2825 if ((error = ciss_start(cr)) != 0) { 2826 xpt_freeze_simq(sim, 1); 2827 if (error == EINPROGRESS) { 2828 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2829 error = 0; 2830 } else { 2831 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2832 ciss_release_request(cr); 2833 } 2834 return(error); 2835 } 2836 2837 return(0); 2838 } 2839 2840 /************************************************************************ 2841 * Emulate SCSI commands the adapter doesn't handle as we might like. 2842 */ 2843 static int 2844 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio) 2845 { 2846 int bus, target; 2847 u_int8_t opcode; 2848 2849 target = csio->ccb_h.target_id; 2850 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 2851 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? 2852 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; 2853 2854 if (CISS_IS_PHYSICAL(bus)) { 2855 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) { 2856 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2857 xpt_done((union ccb *)csio); 2858 return(1); 2859 } else 2860 return(0); 2861 } 2862 2863 /* 2864 * Handle requests for volumes that don't exist or are not online. 2865 * A selection timeout is slightly better than an illegal request. 2866 * Other errors might be better. 2867 */ 2868 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) { 2869 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2870 xpt_done((union ccb *)csio); 2871 return(1); 2872 } 2873 2874 /* if we have to fake Synchronise Cache */ 2875 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) { 2876 /* 2877 * If this is a Synchronise Cache command, typically issued when 2878 * a device is closed, flush the adapter and complete now. 2879 */ 2880 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2881 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) { 2882 ciss_flush_adapter(sc); 2883 csio->ccb_h.status = CAM_REQ_CMP; 2884 xpt_done((union ccb *)csio); 2885 return(1); 2886 } 2887 } 2888 2889 return(0); 2890 } 2891 2892 /************************************************************************ 2893 * Check for possibly-completed commands. 2894 */ 2895 static void 2896 ciss_cam_poll(struct cam_sim *sim) 2897 { 2898 struct ciss_softc *sc = cam_sim_softc(sim); 2899 2900 debug_called(2); 2901 2902 ciss_done(sc); 2903 } 2904 2905 /************************************************************************ 2906 * Handle completion of a command - pass results back through the CCB 2907 */ 2908 static void 2909 ciss_cam_complete(struct ciss_request *cr) 2910 { 2911 struct ciss_softc *sc; 2912 struct ciss_command *cc; 2913 struct ciss_error_info *ce; 2914 struct ccb_scsiio *csio; 2915 int scsi_status; 2916 int command_status; 2917 2918 debug_called(2); 2919 2920 sc = cr->cr_sc; 2921 cc = CISS_FIND_COMMAND(cr); 2922 ce = (struct ciss_error_info *)&(cc->sg[0]); 2923 csio = (struct ccb_scsiio *)cr->cr_private; 2924 2925 /* 2926 * Extract status values from request. 2927 */ 2928 ciss_report_request(cr, &command_status, &scsi_status); 2929 csio->scsi_status = scsi_status; 2930 2931 /* 2932 * Handle specific SCSI status values. 2933 */ 2934 switch(scsi_status) { 2935 /* no status due to adapter error */ 2936 case -1: 2937 debug(0, "adapter error"); 2938 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2939 break; 2940 2941 /* no status due to command completed OK */ 2942 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */ 2943 debug(2, "SCSI_STATUS_OK"); 2944 csio->ccb_h.status = CAM_REQ_CMP; 2945 break; 2946 2947 /* check condition, sense data included */ 2948 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */ 2949 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n", 2950 ce->sense_length, ce->residual_count); 2951 bzero(&csio->sense_data, SSD_FULL_SIZE); 2952 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); 2953 csio->sense_len = ce->sense_length; 2954 csio->resid = ce->residual_count; 2955 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 2956 #ifdef CISS_DEBUG 2957 { 2958 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0]; 2959 debug(0, "sense key %x", sns->flags & SSD_KEY); 2960 } 2961 #endif 2962 break; 2963 2964 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */ 2965 debug(0, "SCSI_STATUS_BUSY"); 2966 csio->ccb_h.status = CAM_SCSI_BUSY; 2967 break; 2968 2969 default: 2970 debug(0, "unknown status 0x%x", csio->scsi_status); 2971 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2972 break; 2973 } 2974 2975 /* handle post-command fixup */ 2976 ciss_cam_complete_fixup(sc, csio); 2977 2978 /* tell CAM we're ready for more commands */ 2979 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2980 2981 xpt_done((union ccb *)csio); 2982 ciss_release_request(cr); 2983 } 2984 2985 /******************************************************************************** 2986 * Fix up the result of some commands here. 2987 */ 2988 static void 2989 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio) 2990 { 2991 struct scsi_inquiry_data *inq; 2992 struct ciss_ldrive *cl; 2993 int bus, target; 2994 2995 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2996 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) { 2997 2998 inq = (struct scsi_inquiry_data *)csio->data_ptr; 2999 target = csio->ccb_h.target_id; 3000 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 3001 3002 /* 3003 * Don't let hard drives be seen by the DA driver. They will still be 3004 * attached by the PASS driver. 3005 */ 3006 if (CISS_IS_PHYSICAL(bus)) { 3007 if (SID_TYPE(inq) == T_DIRECT) 3008 inq->device = (inq->device & 0xe0) | T_NODEVICE; 3009 return; 3010 } 3011 3012 cl = &sc->ciss_logical[bus][target]; 3013 3014 padstr(inq->vendor, "COMPAQ", 8); 3015 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); 3016 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); 3017 } 3018 } 3019 3020 3021 /******************************************************************************** 3022 * Find a peripheral attached at (target) 3023 */ 3024 static struct cam_periph * 3025 ciss_find_periph(struct ciss_softc *sc, int bus, int target) 3026 { 3027 struct cam_periph *periph; 3028 struct cam_path *path; 3029 int status; 3030 3031 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]), 3032 target, 0); 3033 if (status == CAM_REQ_CMP) { 3034 periph = cam_periph_find(path, NULL); 3035 xpt_free_path(path); 3036 } else { 3037 periph = NULL; 3038 } 3039 return(periph); 3040 } 3041 3042 /******************************************************************************** 3043 * Name the device at (target) 3044 * 3045 * XXX is this strictly correct? 3046 */ 3047 static int 3048 ciss_name_device(struct ciss_softc *sc, int bus, int target) 3049 { 3050 struct cam_periph *periph; 3051 3052 if (CISS_IS_PHYSICAL(bus)) 3053 return (0); 3054 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) { 3055 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d", 3056 periph->periph_name, periph->unit_number); 3057 return(0); 3058 } 3059 sc->ciss_logical[bus][target].cl_name[0] = 0; 3060 return(ENOENT); 3061 } 3062 3063 /************************************************************************ 3064 * Periodic status monitoring. 3065 */ 3066 static void 3067 ciss_periodic(void *arg) 3068 { 3069 struct ciss_softc *sc; 3070 struct ciss_request *cr = NULL; 3071 struct ciss_command *cc = NULL; 3072 int error = 0; 3073 3074 debug_called(1); 3075 3076 sc = (struct ciss_softc *)arg; 3077 3078 /* 3079 * Check the adapter heartbeat. 3080 */ 3081 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) { 3082 sc->ciss_heart_attack++; 3083 debug(0, "adapter heart attack in progress 0x%x/%d", 3084 sc->ciss_heartbeat, sc->ciss_heart_attack); 3085 if (sc->ciss_heart_attack == 3) { 3086 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n"); 3087 ciss_disable_adapter(sc); 3088 return; 3089 } 3090 } else { 3091 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; 3092 sc->ciss_heart_attack = 0; 3093 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); 3094 } 3095 3096 /* 3097 * Send the NOP message and wait for a response. 3098 */ 3099 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) { 3100 cc = CISS_FIND_COMMAND(cr); 3101 cr->cr_complete = ciss_nop_complete; 3102 cc->cdb.cdb_length = 1; 3103 cc->cdb.type = CISS_CDB_TYPE_MESSAGE; 3104 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3105 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; 3106 cc->cdb.timeout = 0; 3107 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP; 3108 3109 if ((error = ciss_start(cr)) != 0) { 3110 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n"); 3111 } 3112 } 3113 3114 /* 3115 * If the notify event request has died for some reason, or has 3116 * not started yet, restart it. 3117 */ 3118 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) { 3119 debug(0, "(re)starting Event Notify chain"); 3120 ciss_notify_event(sc); 3121 } 3122 3123 /* 3124 * Reschedule. 3125 */ 3126 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc); 3127 } 3128 3129 static void 3130 ciss_nop_complete(struct ciss_request *cr) 3131 { 3132 struct ciss_softc *sc; 3133 static int first_time = 1; 3134 3135 sc = cr->cr_sc; 3136 if (ciss_report_request(cr, NULL, NULL) != 0) { 3137 if (first_time == 1) { 3138 first_time = 0; 3139 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n"); 3140 } 3141 } 3142 3143 ciss_release_request(cr); 3144 } 3145 3146 /************************************************************************ 3147 * Disable the adapter. 3148 * 3149 * The all requests in completed queue is failed with hardware error. 3150 * This will cause failover in a multipath configuration. 3151 */ 3152 static void 3153 ciss_disable_adapter(struct ciss_softc *sc) 3154 { 3155 struct ciss_request *cr; 3156 struct ciss_command *cc; 3157 struct ciss_error_info *ce; 3158 int s; 3159 3160 s = splcam(); 3161 3162 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); 3163 pci_disable_busmaster(sc->ciss_dev); 3164 sc->ciss_flags &= ~CISS_FLAG_RUNNING; 3165 3166 for (;;) { 3167 if ((cr = ciss_dequeue_busy(sc)) == NULL) 3168 break; 3169 3170 cc = CISS_FIND_COMMAND(cr); 3171 ce = (struct ciss_error_info *)&(cc->sg[0]); 3172 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR; 3173 ciss_enqueue_complete(cr); 3174 } 3175 3176 for (;;) { 3177 if ((cr = ciss_dequeue_complete(sc)) == NULL) 3178 break; 3179 3180 /* 3181 * If the request has a callback, invoke it. 3182 */ 3183 if (cr->cr_complete != NULL) { 3184 cr->cr_complete(cr); 3185 continue; 3186 } 3187 3188 /* 3189 * If someone is sleeping on this request, wake them up. 3190 */ 3191 if (cr->cr_flags & CISS_REQ_SLEEP) { 3192 cr->cr_flags &= ~CISS_REQ_SLEEP; 3193 wakeup(cr); 3194 continue; 3195 } 3196 } 3197 3198 splx(s); 3199 } 3200 3201 /************************************************************************ 3202 * Request a notification response from the adapter. 3203 * 3204 * If (cr) is NULL, this is the first request of the adapter, so 3205 * reset the adapter's message pointer and start with the oldest 3206 * message available. 3207 */ 3208 static void 3209 ciss_notify_event(struct ciss_softc *sc) 3210 { 3211 struct ciss_request *cr; 3212 struct ciss_command *cc; 3213 struct ciss_notify_cdb *cnc; 3214 int error; 3215 3216 debug_called(1); 3217 3218 cr = sc->ciss_periodic_notify; 3219 3220 /* get a request if we don't already have one */ 3221 if (cr == NULL) { 3222 if ((error = ciss_get_request(sc, &cr)) != 0) { 3223 debug(0, "can't get notify event request"); 3224 goto out; 3225 } 3226 sc->ciss_periodic_notify = cr; 3227 cr->cr_complete = ciss_notify_complete; 3228 debug(1, "acquired request %d", cr->cr_tag); 3229 } 3230 3231 /* 3232 * Get a databuffer if we don't already have one, note that the 3233 * adapter command wants a larger buffer than the actual 3234 * structure. 3235 */ 3236 if (cr->cr_data == NULL) { 3237 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3238 debug(0, "can't get notify event request buffer"); 3239 error = ENOMEM; 3240 goto out; 3241 } 3242 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3243 } 3244 3245 /* re-setup the request's command (since we never release it) XXX overkill*/ 3246 ciss_preen_command(cr); 3247 3248 /* (re)build the notify event command */ 3249 cc = CISS_FIND_COMMAND(cr); 3250 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3251 cc->header.address.physical.bus = 0; 3252 cc->header.address.physical.target = 0; 3253 3254 cc->cdb.cdb_length = sizeof(*cnc); 3255 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3256 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3257 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3258 cc->cdb.timeout = 0; /* no timeout, we hope */ 3259 3260 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3261 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE); 3262 cnc->opcode = CISS_OPCODE_READ; 3263 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT; 3264 cnc->timeout = 0; /* no timeout, we hope */ 3265 cnc->synchronous = 0; 3266 cnc->ordered = 0; 3267 cnc->seek_to_oldest = 0; 3268 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0) 3269 cnc->new_only = 1; 3270 else 3271 cnc->new_only = 0; 3272 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3273 3274 /* submit the request */ 3275 error = ciss_start(cr); 3276 3277 out: 3278 if (error) { 3279 if (cr != NULL) { 3280 if (cr->cr_data != NULL) 3281 free(cr->cr_data, CISS_MALLOC_CLASS); 3282 ciss_release_request(cr); 3283 } 3284 sc->ciss_periodic_notify = NULL; 3285 debug(0, "can't submit notify event request"); 3286 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3287 } else { 3288 debug(1, "notify event submitted"); 3289 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK; 3290 } 3291 } 3292 3293 static void 3294 ciss_notify_complete(struct ciss_request *cr) 3295 { 3296 struct ciss_command *cc; 3297 struct ciss_notify *cn; 3298 struct ciss_softc *sc; 3299 int scsi_status; 3300 int command_status; 3301 debug_called(1); 3302 3303 cc = CISS_FIND_COMMAND(cr); 3304 cn = (struct ciss_notify *)cr->cr_data; 3305 sc = cr->cr_sc; 3306 3307 /* 3308 * Report request results, decode status. 3309 */ 3310 ciss_report_request(cr, &command_status, &scsi_status); 3311 3312 /* 3313 * Abort the chain on a fatal error. 3314 * 3315 * XXX which of these are actually errors? 3316 */ 3317 if ((command_status != CISS_CMD_STATUS_SUCCESS) && 3318 (command_status != CISS_CMD_STATUS_TARGET_STATUS) && 3319 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */ 3320 ciss_printf(sc, "fatal error in Notify Event request (%s)\n", 3321 ciss_name_command_status(command_status)); 3322 ciss_release_request(cr); 3323 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3324 return; 3325 } 3326 3327 /* 3328 * If the adapter gave us a text message, print it. 3329 */ 3330 if (cn->message[0] != 0) 3331 ciss_printf(sc, "*** %.80s\n", cn->message); 3332 3333 debug(0, "notify event class %d subclass %d detail %d", 3334 cn->class, cn->subclass, cn->detail); 3335 3336 /* 3337 * If the response indicates that the notifier has been aborted, 3338 * release the notifier command. 3339 */ 3340 if ((cn->class == CISS_NOTIFY_NOTIFIER) && 3341 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) && 3342 (cn->detail == 1)) { 3343 debug(0, "notifier exiting"); 3344 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3345 ciss_release_request(cr); 3346 sc->ciss_periodic_notify = NULL; 3347 wakeup(&sc->ciss_periodic_notify); 3348 } else { 3349 /* Handle notify events in a kernel thread */ 3350 ciss_enqueue_notify(cr); 3351 sc->ciss_periodic_notify = NULL; 3352 wakeup(&sc->ciss_periodic_notify); 3353 wakeup(&sc->ciss_notify); 3354 } 3355 /* 3356 * Send a new notify event command, if we're not aborting. 3357 */ 3358 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) { 3359 ciss_notify_event(sc); 3360 } 3361 } 3362 3363 /************************************************************************ 3364 * Abort the Notify Event chain. 3365 * 3366 * Note that we can't just abort the command in progress; we have to 3367 * explicitly issue an Abort Notify Event command in order for the 3368 * adapter to clean up correctly. 3369 * 3370 * If we are called with CISS_FLAG_ABORTING set in the adapter softc, 3371 * the chain will not restart itself. 3372 */ 3373 static int 3374 ciss_notify_abort(struct ciss_softc *sc) 3375 { 3376 struct ciss_request *cr; 3377 struct ciss_command *cc; 3378 struct ciss_notify_cdb *cnc; 3379 int error, s, command_status, scsi_status; 3380 3381 debug_called(1); 3382 3383 cr = NULL; 3384 error = 0; 3385 3386 /* verify that there's an outstanding command */ 3387 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3388 goto out; 3389 3390 /* get a command to issue the abort with */ 3391 if ((error = ciss_get_request(sc, &cr))) 3392 goto out; 3393 3394 /* get a buffer for the result */ 3395 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3396 debug(0, "can't get notify event request buffer"); 3397 error = ENOMEM; 3398 goto out; 3399 } 3400 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3401 3402 /* build the CDB */ 3403 cc = CISS_FIND_COMMAND(cr); 3404 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3405 cc->header.address.physical.bus = 0; 3406 cc->header.address.physical.target = 0; 3407 cc->cdb.cdb_length = sizeof(*cnc); 3408 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3409 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3410 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3411 cc->cdb.timeout = 0; /* no timeout, we hope */ 3412 3413 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3414 bzero(cnc, sizeof(*cnc)); 3415 cnc->opcode = CISS_OPCODE_WRITE; 3416 cnc->command = CISS_COMMAND_ABORT_NOTIFY; 3417 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3418 3419 ciss_print_request(cr); 3420 3421 /* 3422 * Submit the request and wait for it to complete. 3423 */ 3424 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3425 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error); 3426 goto out; 3427 } 3428 3429 /* 3430 * Check response. 3431 */ 3432 ciss_report_request(cr, &command_status, &scsi_status); 3433 switch(command_status) { 3434 case CISS_CMD_STATUS_SUCCESS: 3435 break; 3436 case CISS_CMD_STATUS_INVALID_COMMAND: 3437 /* 3438 * Some older adapters don't support the CISS version of this 3439 * command. Fall back to using the BMIC version. 3440 */ 3441 error = ciss_notify_abort_bmic(sc); 3442 if (error != 0) 3443 goto out; 3444 break; 3445 3446 case CISS_CMD_STATUS_TARGET_STATUS: 3447 /* 3448 * This can happen if the adapter thinks there wasn't an outstanding 3449 * Notify Event command but we did. We clean up here. 3450 */ 3451 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) { 3452 if (sc->ciss_periodic_notify != NULL) 3453 ciss_release_request(sc->ciss_periodic_notify); 3454 error = 0; 3455 goto out; 3456 } 3457 /* FALLTHROUGH */ 3458 3459 default: 3460 ciss_printf(sc, "Abort Notify Event command failed (%s)\n", 3461 ciss_name_command_status(command_status)); 3462 error = EIO; 3463 goto out; 3464 } 3465 3466 /* 3467 * Sleep waiting for the notifier command to complete. Note 3468 * that if it doesn't, we may end up in a bad situation, since 3469 * the adapter may deliver it later. Also note that the adapter 3470 * requires the Notify Event command to be cancelled in order to 3471 * maintain internal bookkeeping. 3472 */ 3473 s = splcam(); 3474 while (sc->ciss_periodic_notify != NULL) { 3475 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5); 3476 if (error == EWOULDBLOCK) { 3477 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); 3478 break; 3479 } 3480 } 3481 splx(s); 3482 3483 out: 3484 /* release the cancel request */ 3485 if (cr != NULL) { 3486 if (cr->cr_data != NULL) 3487 free(cr->cr_data, CISS_MALLOC_CLASS); 3488 ciss_release_request(cr); 3489 } 3490 if (error == 0) 3491 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3492 return(error); 3493 } 3494 3495 /************************************************************************ 3496 * Abort the Notify Event chain using a BMIC command. 3497 */ 3498 static int 3499 ciss_notify_abort_bmic(struct ciss_softc *sc) 3500 { 3501 struct ciss_request *cr; 3502 int error, command_status; 3503 3504 debug_called(1); 3505 3506 cr = NULL; 3507 error = 0; 3508 3509 /* verify that there's an outstanding command */ 3510 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3511 goto out; 3512 3513 /* 3514 * Build a BMIC command to cancel the Notify on Event command. 3515 * 3516 * Note that we are sending a CISS opcode here. Odd. 3517 */ 3518 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY, 3519 NULL, 0)) != 0) 3520 goto out; 3521 3522 /* 3523 * Submit the request and wait for it to complete. 3524 */ 3525 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3526 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error); 3527 goto out; 3528 } 3529 3530 /* 3531 * Check response. 3532 */ 3533 ciss_report_request(cr, &command_status, NULL); 3534 switch(command_status) { 3535 case CISS_CMD_STATUS_SUCCESS: 3536 break; 3537 default: 3538 ciss_printf(sc, "error cancelling Notify on Event (%s)\n", 3539 ciss_name_command_status(command_status)); 3540 error = EIO; 3541 goto out; 3542 } 3543 3544 out: 3545 if (cr != NULL) 3546 ciss_release_request(cr); 3547 return(error); 3548 } 3549 3550 /************************************************************************ 3551 * Handle rescanning all the logical volumes when a notify event 3552 * causes the drives to come online or offline. 3553 */ 3554 static void 3555 ciss_notify_rescan_logical(struct ciss_softc *sc) 3556 { 3557 struct ciss_lun_report *cll; 3558 struct ciss_ldrive *ld; 3559 int i, j, ndrives; 3560 3561 /* 3562 * We must rescan all logical volumes to get the right logical 3563 * drive address. 3564 */ 3565 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 3566 CISS_MAX_LOGICAL); 3567 if (cll == NULL) 3568 return; 3569 3570 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 3571 3572 /* 3573 * Delete any of the drives which were destroyed by the 3574 * firmware. 3575 */ 3576 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 3577 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 3578 ld = &sc->ciss_logical[i][j]; 3579 3580 if (ld->cl_update == 0) 3581 continue; 3582 3583 if (ld->cl_status != CISS_LD_ONLINE) { 3584 ciss_cam_rescan_target(sc, i, j); 3585 ld->cl_update = 0; 3586 if (ld->cl_ldrive) 3587 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 3588 if (ld->cl_lstatus) 3589 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 3590 3591 ld->cl_ldrive = NULL; 3592 ld->cl_lstatus = NULL; 3593 } 3594 } 3595 } 3596 3597 /* 3598 * Scan for new drives. 3599 */ 3600 for (i = 0; i < ndrives; i++) { 3601 int bus, target; 3602 3603 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 3604 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 3605 ld = &sc->ciss_logical[bus][target]; 3606 3607 if (ld->cl_update == 0) 3608 continue; 3609 3610 ld->cl_update = 0; 3611 ld->cl_address = cll->lun[i]; 3612 ld->cl_controller = &sc->ciss_controllers[bus]; 3613 if (ciss_identify_logical(sc, ld) == 0) { 3614 ciss_cam_rescan_target(sc, bus, target); 3615 } 3616 } 3617 free(cll, CISS_MALLOC_CLASS); 3618 } 3619 3620 /************************************************************************ 3621 * Handle a notify event relating to the status of a logical drive. 3622 * 3623 * XXX need to be able to defer some of these to properly handle 3624 * calling the "ID Physical drive" command, unless the 'extended' 3625 * drive IDs are always in BIG_MAP format. 3626 */ 3627 static void 3628 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn) 3629 { 3630 struct ciss_ldrive *ld; 3631 int ostatus, bus, target; 3632 3633 debug_called(2); 3634 3635 bus = cn->device.physical.bus; 3636 target = cn->data.logical_status.logical_drive; 3637 ld = &sc->ciss_logical[bus][target]; 3638 3639 switch (cn->subclass) { 3640 case CISS_NOTIFY_LOGICAL_STATUS: 3641 switch (cn->detail) { 3642 case 0: 3643 ciss_name_device(sc, bus, target); 3644 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n", 3645 cn->data.logical_status.logical_drive, ld->cl_name, 3646 ciss_name_ldrive_status(cn->data.logical_status.previous_state), 3647 ciss_name_ldrive_status(cn->data.logical_status.new_state), 3648 cn->data.logical_status.spare_state, 3649 "\20\1configured\2rebuilding\3failed\4in use\5available\n"); 3650 3651 /* 3652 * Update our idea of the drive's status. 3653 */ 3654 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state); 3655 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3656 if (ld->cl_lstatus != NULL) 3657 ld->cl_lstatus->status = cn->data.logical_status.new_state; 3658 3659 /* 3660 * Have CAM rescan the drive if its status has changed. 3661 */ 3662 if (ostatus != ld->cl_status) { 3663 ld->cl_update = 1; 3664 ciss_notify_rescan_logical(sc); 3665 } 3666 3667 break; 3668 3669 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ 3670 ciss_name_device(sc, bus, target); 3671 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n", 3672 cn->data.logical_status.logical_drive, ld->cl_name); 3673 ciss_accept_media(sc, ld); 3674 3675 ld->cl_update = 1; 3676 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3677 ciss_notify_rescan_logical(sc); 3678 break; 3679 3680 case 2: 3681 case 3: 3682 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n", 3683 cn->data.rebuild_aborted.logical_drive, 3684 ld->cl_name, 3685 (cn->detail == 2) ? "read" : "write"); 3686 break; 3687 } 3688 break; 3689 3690 case CISS_NOTIFY_LOGICAL_ERROR: 3691 if (cn->detail == 0) { 3692 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n", 3693 cn->data.io_error.logical_drive, 3694 ld->cl_name, 3695 cn->data.io_error.failure_bus, 3696 cn->data.io_error.failure_drive); 3697 /* XXX should we take the drive down at this point, or will we be told? */ 3698 } 3699 break; 3700 3701 case CISS_NOTIFY_LOGICAL_SURFACE: 3702 if (cn->detail == 0) 3703 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n", 3704 cn->data.consistency_completed.logical_drive, 3705 ld->cl_name); 3706 break; 3707 } 3708 } 3709 3710 /************************************************************************ 3711 * Handle a notify event relating to the status of a physical drive. 3712 */ 3713 static void 3714 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn) 3715 { 3716 } 3717 3718 /************************************************************************ 3719 * Handle a notify event relating to the status of a physical drive. 3720 */ 3721 static void 3722 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn) 3723 { 3724 struct ciss_lun_report *cll = NULL; 3725 int bus, target; 3726 int s; 3727 3728 switch (cn->subclass) { 3729 case CISS_NOTIFY_HOTPLUG_PHYSICAL: 3730 case CISS_NOTIFY_HOTPLUG_NONDISK: 3731 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number); 3732 target = 3733 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number); 3734 3735 s = splcam(); 3736 if (cn->detail == 0) { 3737 /* 3738 * Mark the device offline so that it'll start producing selection 3739 * timeouts to the upper layer. 3740 */ 3741 if ((bus >= 0) && (target >= 0)) 3742 sc->ciss_physical[bus][target].cp_online = 0; 3743 } else { 3744 /* 3745 * Rescan the physical lun list for new items 3746 */ 3747 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 3748 CISS_MAX_PHYSICAL); 3749 if (cll == NULL) { 3750 ciss_printf(sc, "Warning, cannot get physical lun list\n"); 3751 break; 3752 } 3753 ciss_filter_physical(sc, cll); 3754 } 3755 splx(s); 3756 break; 3757 3758 default: 3759 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass); 3760 return; 3761 } 3762 3763 if (cll != NULL) 3764 free(cll, CISS_MALLOC_CLASS); 3765 } 3766 3767 /************************************************************************ 3768 * Handle deferred processing of notify events. Notify events may need 3769 * sleep which is unsafe during an interrupt. 3770 */ 3771 static void 3772 ciss_notify_thread(void *arg) 3773 { 3774 struct ciss_softc *sc; 3775 struct ciss_request *cr; 3776 struct ciss_notify *cn; 3777 int s; 3778 3779 sc = (struct ciss_softc *)arg; 3780 #if __FreeBSD_version >= 500000 3781 mtx_lock(&sc->ciss_mtx); 3782 #endif 3783 3784 s = splcam(); 3785 for (;;) { 3786 if (TAILQ_EMPTY(&sc->ciss_notify) != 0 && 3787 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) { 3788 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0); 3789 } 3790 3791 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) 3792 break; 3793 3794 cr = ciss_dequeue_notify(sc); 3795 splx(s); 3796 3797 if (cr == NULL) 3798 panic("cr null"); 3799 cn = (struct ciss_notify *)cr->cr_data; 3800 3801 switch (cn->class) { 3802 case CISS_NOTIFY_HOTPLUG: 3803 ciss_notify_hotplug(sc, cn); 3804 break; 3805 case CISS_NOTIFY_LOGICAL: 3806 ciss_notify_logical(sc, cn); 3807 break; 3808 case CISS_NOTIFY_PHYSICAL: 3809 ciss_notify_physical(sc, cn); 3810 break; 3811 } 3812 3813 ciss_release_request(cr); 3814 3815 s = splcam(); 3816 } 3817 sc->ciss_notify_thread = NULL; 3818 wakeup(&sc->ciss_notify_thread); 3819 splx(s); 3820 3821 #if __FreeBSD_version >= 500000 3822 mtx_unlock(&sc->ciss_mtx); 3823 #endif 3824 kproc_exit(0); 3825 } 3826 3827 /************************************************************************ 3828 * Start the notification kernel thread. 3829 */ 3830 static void 3831 ciss_spawn_notify_thread(struct ciss_softc *sc) 3832 { 3833 3834 #if __FreeBSD_version > 500005 3835 if (kproc_create((void(*)(void *))ciss_notify_thread, sc, 3836 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d", 3837 device_get_unit(sc->ciss_dev))) 3838 #else 3839 if (kproc_create((void(*)(void *))ciss_notify_thread, sc, 3840 &sc->ciss_notify_thread, "ciss_notify%d", 3841 device_get_unit(sc->ciss_dev))) 3842 #endif 3843 panic("Could not create notify thread\n"); 3844 } 3845 3846 /************************************************************************ 3847 * Kill the notification kernel thread. 3848 */ 3849 static void 3850 ciss_kill_notify_thread(struct ciss_softc *sc) 3851 { 3852 3853 if (sc->ciss_notify_thread == NULL) 3854 return; 3855 3856 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT; 3857 wakeup(&sc->ciss_notify); 3858 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0); 3859 } 3860 3861 /************************************************************************ 3862 * Print a request. 3863 */ 3864 static void 3865 ciss_print_request(struct ciss_request *cr) 3866 { 3867 struct ciss_softc *sc; 3868 struct ciss_command *cc; 3869 int i; 3870 3871 sc = cr->cr_sc; 3872 cc = CISS_FIND_COMMAND(cr); 3873 3874 ciss_printf(sc, "REQUEST @ %p\n", cr); 3875 ciss_printf(sc, " data %p/%d tag %d flags %b\n", 3876 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags, 3877 "\20\1mapped\2sleep\3poll\4dataout\5datain\n"); 3878 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n", 3879 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag); 3880 switch(cc->header.address.mode.mode) { 3881 case CISS_HDR_ADDRESS_MODE_PERIPHERAL: 3882 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL: 3883 ciss_printf(sc, " physical bus %d target %d\n", 3884 cc->header.address.physical.bus, cc->header.address.physical.target); 3885 break; 3886 case CISS_HDR_ADDRESS_MODE_LOGICAL: 3887 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun); 3888 break; 3889 } 3890 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n", 3891 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" : 3892 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" : 3893 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??", 3894 cc->cdb.cdb_length, 3895 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" : 3896 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??", 3897 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" : 3898 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" : 3899 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" : 3900 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" : 3901 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??"); 3902 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " "); 3903 3904 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) { 3905 /* XXX print error info */ 3906 } else { 3907 /* since we don't use chained s/g, don't support it here */ 3908 for (i = 0; i < cc->header.sg_in_list; i++) { 3909 if ((i % 4) == 0) 3910 ciss_printf(sc, " "); 3911 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length); 3912 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1))) 3913 printf("\n"); 3914 } 3915 } 3916 } 3917 3918 /************************************************************************ 3919 * Print information about the status of a logical drive. 3920 */ 3921 static void 3922 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld) 3923 { 3924 int bus, target, i; 3925 3926 if (ld->cl_lstatus == NULL) { 3927 printf("does not exist\n"); 3928 return; 3929 } 3930 3931 /* print drive status */ 3932 switch(ld->cl_lstatus->status) { 3933 case CISS_LSTATUS_OK: 3934 printf("online\n"); 3935 break; 3936 case CISS_LSTATUS_INTERIM_RECOVERY: 3937 printf("in interim recovery mode\n"); 3938 break; 3939 case CISS_LSTATUS_READY_RECOVERY: 3940 printf("ready to begin recovery\n"); 3941 break; 3942 case CISS_LSTATUS_RECOVERING: 3943 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3944 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3945 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n", 3946 bus, target, ld->cl_lstatus->blocks_to_recover); 3947 break; 3948 case CISS_LSTATUS_EXPANDING: 3949 printf("being expanded, %u blocks remaining\n", 3950 ld->cl_lstatus->blocks_to_recover); 3951 break; 3952 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3953 printf("queued for expansion\n"); 3954 break; 3955 case CISS_LSTATUS_FAILED: 3956 printf("queued for expansion\n"); 3957 break; 3958 case CISS_LSTATUS_WRONG_PDRIVE: 3959 printf("wrong physical drive inserted\n"); 3960 break; 3961 case CISS_LSTATUS_MISSING_PDRIVE: 3962 printf("missing a needed physical drive\n"); 3963 break; 3964 case CISS_LSTATUS_BECOMING_READY: 3965 printf("becoming ready\n"); 3966 break; 3967 } 3968 3969 /* print failed physical drives */ 3970 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) { 3971 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]); 3972 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]); 3973 if (bus == -1) 3974 continue; 3975 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target, 3976 ld->cl_lstatus->drive_failure_map[i]); 3977 } 3978 } 3979 3980 #ifdef CISS_DEBUG 3981 /************************************************************************ 3982 * Print information about the controller/driver. 3983 */ 3984 static void 3985 ciss_print_adapter(struct ciss_softc *sc) 3986 { 3987 int i, j; 3988 3989 ciss_printf(sc, "ADAPTER:\n"); 3990 for (i = 0; i < CISSQ_COUNT; i++) { 3991 ciss_printf(sc, "%s %d/%d\n", 3992 i == 0 ? "free" : 3993 i == 1 ? "busy" : "complete", 3994 sc->ciss_qstat[i].q_length, 3995 sc->ciss_qstat[i].q_max); 3996 } 3997 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests); 3998 ciss_printf(sc, "flags %b\n", sc->ciss_flags, 3999 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n"); 4000 4001 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 4002 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 4003 ciss_printf(sc, "LOGICAL DRIVE %d: ", i); 4004 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]); 4005 } 4006 } 4007 4008 /* XXX Should physical drives be printed out here? */ 4009 4010 for (i = 1; i < sc->ciss_max_requests; i++) 4011 ciss_print_request(sc->ciss_request + i); 4012 } 4013 4014 /* DDB hook */ 4015 static void 4016 ciss_print0(void) 4017 { 4018 struct ciss_softc *sc; 4019 4020 sc = devclass_get_softc(devclass_find("ciss"), 0); 4021 if (sc == NULL) { 4022 printf("no ciss controllers\n"); 4023 } else { 4024 ciss_print_adapter(sc); 4025 } 4026 } 4027 #endif 4028 4029 /************************************************************************ 4030 * Return a name for a logical drive status value. 4031 */ 4032 static const char * 4033 ciss_name_ldrive_status(int status) 4034 { 4035 switch (status) { 4036 case CISS_LSTATUS_OK: 4037 return("OK"); 4038 case CISS_LSTATUS_FAILED: 4039 return("failed"); 4040 case CISS_LSTATUS_NOT_CONFIGURED: 4041 return("not configured"); 4042 case CISS_LSTATUS_INTERIM_RECOVERY: 4043 return("interim recovery"); 4044 case CISS_LSTATUS_READY_RECOVERY: 4045 return("ready for recovery"); 4046 case CISS_LSTATUS_RECOVERING: 4047 return("recovering"); 4048 case CISS_LSTATUS_WRONG_PDRIVE: 4049 return("wrong physical drive inserted"); 4050 case CISS_LSTATUS_MISSING_PDRIVE: 4051 return("missing physical drive"); 4052 case CISS_LSTATUS_EXPANDING: 4053 return("expanding"); 4054 case CISS_LSTATUS_BECOMING_READY: 4055 return("becoming ready"); 4056 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 4057 return("queued for expansion"); 4058 } 4059 return("unknown status"); 4060 } 4061 4062 /************************************************************************ 4063 * Return an online/offline/nonexistent value for a logical drive 4064 * status value. 4065 */ 4066 static int 4067 ciss_decode_ldrive_status(int status) 4068 { 4069 switch(status) { 4070 case CISS_LSTATUS_NOT_CONFIGURED: 4071 return(CISS_LD_NONEXISTENT); 4072 4073 case CISS_LSTATUS_OK: 4074 case CISS_LSTATUS_INTERIM_RECOVERY: 4075 case CISS_LSTATUS_READY_RECOVERY: 4076 case CISS_LSTATUS_RECOVERING: 4077 case CISS_LSTATUS_EXPANDING: 4078 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 4079 return(CISS_LD_ONLINE); 4080 4081 case CISS_LSTATUS_FAILED: 4082 case CISS_LSTATUS_WRONG_PDRIVE: 4083 case CISS_LSTATUS_MISSING_PDRIVE: 4084 case CISS_LSTATUS_BECOMING_READY: 4085 default: 4086 return(CISS_LD_OFFLINE); 4087 } 4088 } 4089 4090 4091 /************************************************************************ 4092 * Return a name for a logical drive's organisation. 4093 */ 4094 static const char * 4095 ciss_name_ldrive_org(int org) 4096 { 4097 switch(org) { 4098 case CISS_LDRIVE_RAID0: 4099 return("RAID 0"); 4100 case CISS_LDRIVE_RAID1: 4101 return("RAID 1"); 4102 case CISS_LDRIVE_RAID4: 4103 return("RAID 4"); 4104 case CISS_LDRIVE_RAID5: 4105 return("RAID 5"); 4106 case CISS_LDRIVE_RAID51: 4107 return("RAID 5+1"); 4108 case CISS_LDRIVE_RAIDADG: 4109 return("RAID ADG"); 4110 } 4111 return("unkown"); 4112 } 4113 4114 /************************************************************************ 4115 * Return a name for a command status value. 4116 */ 4117 static const char * 4118 ciss_name_command_status(int status) 4119 { 4120 switch(status) { 4121 case CISS_CMD_STATUS_SUCCESS: 4122 return("success"); 4123 case CISS_CMD_STATUS_TARGET_STATUS: 4124 return("target status"); 4125 case CISS_CMD_STATUS_DATA_UNDERRUN: 4126 return("data underrun"); 4127 case CISS_CMD_STATUS_DATA_OVERRUN: 4128 return("data overrun"); 4129 case CISS_CMD_STATUS_INVALID_COMMAND: 4130 return("invalid command"); 4131 case CISS_CMD_STATUS_PROTOCOL_ERROR: 4132 return("protocol error"); 4133 case CISS_CMD_STATUS_HARDWARE_ERROR: 4134 return("hardware error"); 4135 case CISS_CMD_STATUS_CONNECTION_LOST: 4136 return("connection lost"); 4137 case CISS_CMD_STATUS_ABORTED: 4138 return("aborted"); 4139 case CISS_CMD_STATUS_ABORT_FAILED: 4140 return("abort failed"); 4141 case CISS_CMD_STATUS_UNSOLICITED_ABORT: 4142 return("unsolicited abort"); 4143 case CISS_CMD_STATUS_TIMEOUT: 4144 return("timeout"); 4145 case CISS_CMD_STATUS_UNABORTABLE: 4146 return("unabortable"); 4147 } 4148 return("unknown status"); 4149 } 4150 4151 /************************************************************************ 4152 * Handle an open on the control device. 4153 */ 4154 static int 4155 ciss_open(struct cdev *dev, int flags, int fmt, d_thread_t *p) 4156 { 4157 struct ciss_softc *sc; 4158 4159 debug_called(1); 4160 4161 sc = (struct ciss_softc *)dev->si_drv1; 4162 4163 /* we might want to veto if someone already has us open */ 4164 4165 mtx_lock(&sc->ciss_mtx); 4166 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; 4167 mtx_unlock(&sc->ciss_mtx); 4168 return(0); 4169 } 4170 4171 /************************************************************************ 4172 * Handle the last close on the control device. 4173 */ 4174 static int 4175 ciss_close(struct cdev *dev, int flags, int fmt, d_thread_t *p) 4176 { 4177 struct ciss_softc *sc; 4178 4179 debug_called(1); 4180 4181 sc = (struct ciss_softc *)dev->si_drv1; 4182 4183 mtx_lock(&sc->ciss_mtx); 4184 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; 4185 mtx_unlock(&sc->ciss_mtx); 4186 return (0); 4187 } 4188 4189 /******************************************************************************** 4190 * Handle adapter-specific control operations. 4191 * 4192 * Note that the API here is compatible with the Linux driver, in order to 4193 * simplify the porting of Compaq's userland tools. 4194 */ 4195 static int 4196 ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *p) 4197 { 4198 struct ciss_softc *sc; 4199 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr; 4200 #ifdef __amd64__ 4201 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr; 4202 IOCTL_Command_struct ioc_swab; 4203 #endif 4204 int error; 4205 4206 debug_called(1); 4207 4208 sc = (struct ciss_softc *)dev->si_drv1; 4209 error = 0; 4210 mtx_lock(&sc->ciss_mtx); 4211 4212 switch(cmd) { 4213 case CCISS_GETPCIINFO: 4214 { 4215 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr; 4216 4217 pis->bus = pci_get_bus(sc->ciss_dev); 4218 pis->dev_fn = pci_get_slot(sc->ciss_dev); 4219 pis->board_id = pci_get_devid(sc->ciss_dev); 4220 4221 break; 4222 } 4223 4224 case CCISS_GETINTINFO: 4225 { 4226 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4227 4228 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay; 4229 cis->count = sc->ciss_cfg->interrupt_coalesce_count; 4230 4231 break; 4232 } 4233 4234 case CCISS_SETINTINFO: 4235 { 4236 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4237 4238 if ((cis->delay == 0) && (cis->count == 0)) { 4239 error = EINVAL; 4240 break; 4241 } 4242 4243 /* 4244 * XXX apparently this is only safe if the controller is idle, 4245 * we should suspend it before doing this. 4246 */ 4247 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay; 4248 sc->ciss_cfg->interrupt_coalesce_count = cis->count; 4249 4250 if (ciss_update_config(sc)) 4251 error = EIO; 4252 4253 /* XXX resume the controller here */ 4254 break; 4255 } 4256 4257 case CCISS_GETNODENAME: 4258 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr, 4259 sizeof(NodeName_type)); 4260 break; 4261 4262 case CCISS_SETNODENAME: 4263 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name, 4264 sizeof(NodeName_type)); 4265 if (ciss_update_config(sc)) 4266 error = EIO; 4267 break; 4268 4269 case CCISS_GETHEARTBEAT: 4270 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat; 4271 break; 4272 4273 case CCISS_GETBUSTYPES: 4274 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types; 4275 break; 4276 4277 case CCISS_GETFIRMVER: 4278 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr, 4279 sizeof(FirmwareVer_type)); 4280 break; 4281 4282 case CCISS_GETDRIVERVER: 4283 *(DriverVer_type *)addr = CISS_DRIVER_VERSION; 4284 break; 4285 4286 case CCISS_REVALIDVOLS: 4287 /* 4288 * This is a bit ugly; to do it "right" we really need 4289 * to find any disks that have changed, kick CAM off them, 4290 * then rescan only these disks. It'd be nice if they 4291 * a) told us which disk(s) they were going to play with, 4292 * and b) which ones had arrived. 8( 4293 */ 4294 break; 4295 4296 #ifdef __amd64__ 4297 case CCISS_PASSTHRU32: 4298 ioc_swab.LUN_info = ioc32->LUN_info; 4299 ioc_swab.Request = ioc32->Request; 4300 ioc_swab.error_info = ioc32->error_info; 4301 ioc_swab.buf_size = ioc32->buf_size; 4302 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf; 4303 ioc = &ioc_swab; 4304 /* FALLTHROUGH */ 4305 #endif 4306 4307 case CCISS_PASSTHRU: 4308 error = ciss_user_command(sc, ioc); 4309 break; 4310 4311 default: 4312 debug(0, "unknown ioctl 0x%lx", cmd); 4313 4314 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO); 4315 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO); 4316 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO); 4317 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME); 4318 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME); 4319 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT); 4320 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES); 4321 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER); 4322 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER); 4323 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS); 4324 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU); 4325 4326 error = ENOIOCTL; 4327 break; 4328 } 4329 4330 mtx_unlock(&sc->ciss_mtx); 4331 return(error); 4332 } 4333