ciss.c revision 140534
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: head/sys/dev/ciss/ciss.c 140534 2005-01-20 22:51:38Z ps $ 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 87#include <cam/cam.h> 88#include <cam/cam_ccb.h> 89#include <cam/cam_periph.h> 90#include <cam/cam_sim.h> 91#include <cam/cam_xpt_sim.h> 92#include <cam/scsi/scsi_all.h> 93#include <cam/scsi/scsi_message.h> 94 95#include <machine/clock.h> 96#include <machine/bus_memio.h> 97#include <machine/bus.h> 98#include <machine/endian.h> 99#include <machine/resource.h> 100#include <sys/rman.h> 101 102#include <dev/pci/pcireg.h> 103#include <dev/pci/pcivar.h> 104 105#include <dev/ciss/cissreg.h> 106#include <dev/ciss/cissvar.h> 107#include <dev/ciss/cissio.h> 108 109MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers"); 110 111/* pci interface */ 112static int ciss_lookup(device_t dev); 113static int ciss_probe(device_t dev); 114static int ciss_attach(device_t dev); 115static int ciss_detach(device_t dev); 116static int ciss_shutdown(device_t dev); 117 118/* (de)initialisation functions, control wrappers */ 119static int ciss_init_pci(struct ciss_softc *sc); 120static int ciss_wait_adapter(struct ciss_softc *sc); 121static int ciss_flush_adapter(struct ciss_softc *sc); 122static int ciss_init_requests(struct ciss_softc *sc); 123static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, 124 int nseg, int error); 125static int ciss_identify_adapter(struct ciss_softc *sc); 126static int ciss_init_logical(struct ciss_softc *sc); 127static int ciss_init_physical(struct ciss_softc *sc); 128static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll); 129static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld); 130static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld); 131static int ciss_update_config(struct ciss_softc *sc); 132static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld); 133static void ciss_free(struct ciss_softc *sc); 134static void ciss_spawn_notify_thread(struct ciss_softc *sc); 135static void ciss_kill_notify_thread(struct ciss_softc *sc); 136 137/* request submission/completion */ 138static int ciss_start(struct ciss_request *cr); 139static void ciss_done(struct ciss_softc *sc); 140static void ciss_intr(void *arg); 141static void ciss_complete(struct ciss_softc *sc); 142static int ciss_report_request(struct ciss_request *cr, int *command_status, 143 int *scsi_status); 144static int ciss_synch_request(struct ciss_request *cr, int timeout); 145static int ciss_poll_request(struct ciss_request *cr, int timeout); 146static int ciss_wait_request(struct ciss_request *cr, int timeout); 147#if 0 148static int ciss_abort_request(struct ciss_request *cr); 149#endif 150 151/* request queueing */ 152static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp); 153static void ciss_preen_command(struct ciss_request *cr); 154static void ciss_release_request(struct ciss_request *cr); 155 156/* request helpers */ 157static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 158 int opcode, void **bufp, size_t bufsize); 159static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc); 160 161/* DMA map/unmap */ 162static int ciss_map_request(struct ciss_request *cr); 163static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, 164 int nseg, int error); 165static void ciss_unmap_request(struct ciss_request *cr); 166 167/* CAM interface */ 168static int ciss_cam_init(struct ciss_softc *sc); 169static void ciss_cam_rescan_target(struct ciss_softc *sc, 170 int bus, int target); 171static void ciss_cam_rescan_all(struct ciss_softc *sc); 172static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 173static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb); 174static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 175static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio); 176static void ciss_cam_poll(struct cam_sim *sim); 177static void ciss_cam_complete(struct ciss_request *cr); 178static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio); 179static struct cam_periph *ciss_find_periph(struct ciss_softc *sc, 180 int bus, int target); 181static int ciss_name_device(struct ciss_softc *sc, int bus, int target); 182 183/* periodic status monitoring */ 184static void ciss_periodic(void *arg); 185static void ciss_notify_event(struct ciss_softc *sc); 186static void ciss_notify_complete(struct ciss_request *cr); 187static int ciss_notify_abort(struct ciss_softc *sc); 188static int ciss_notify_abort_bmic(struct ciss_softc *sc); 189static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn); 190static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn); 191static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn); 192 193/* debugging output */ 194static void ciss_print_request(struct ciss_request *cr); 195static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld); 196static const char *ciss_name_ldrive_status(int status); 197static int ciss_decode_ldrive_status(int status); 198static const char *ciss_name_ldrive_org(int org); 199static const char *ciss_name_command_status(int status); 200 201/* 202 * PCI bus interface. 203 */ 204static device_method_t ciss_methods[] = { 205 /* Device interface */ 206 DEVMETHOD(device_probe, ciss_probe), 207 DEVMETHOD(device_attach, ciss_attach), 208 DEVMETHOD(device_detach, ciss_detach), 209 DEVMETHOD(device_shutdown, ciss_shutdown), 210 { 0, 0 } 211}; 212 213static driver_t ciss_pci_driver = { 214 "ciss", 215 ciss_methods, 216 sizeof(struct ciss_softc) 217}; 218 219static devclass_t ciss_devclass; 220DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0); 221 222/* 223 * Control device interface. 224 */ 225static d_open_t ciss_open; 226static d_close_t ciss_close; 227static d_ioctl_t ciss_ioctl; 228 229static struct cdevsw ciss_cdevsw = { 230 .d_version = D_VERSION, 231 .d_flags = D_NEEDGIANT, 232 .d_open = ciss_open, 233 .d_close = ciss_close, 234 .d_ioctl = ciss_ioctl, 235 .d_name = "ciss", 236}; 237 238/* 239 * This tunable can be set at boot time and controls whether physical devices 240 * that are marked hidden by the firmware should be exposed anyways. 241 */ 242static unsigned int ciss_expose_hidden_physical = 0; 243TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical); 244 245/************************************************************************ 246 * CISS adapters amazingly don't have a defined programming interface 247 * value. (One could say some very despairing things about PCI and 248 * people just not getting the general idea.) So we are forced to 249 * stick with matching against subvendor/subdevice, and thus have to 250 * be updated for every new CISS adapter that appears. 251 */ 252#define CISS_BOARD_SA5 (1<<0) 253#define CISS_BOARD_SA5B (1<<1) 254 255static struct 256{ 257 u_int16_t subvendor; 258 u_int16_t subdevice; 259 int flags; 260 char *desc; 261} ciss_vendor_data[] = { 262 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" }, 263 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" }, 264 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" }, 265 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" }, 266 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" }, 267 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" }, 268 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" }, 269 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" }, 270 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" }, 271 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" }, 272 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" }, 273 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" }, 274 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" }, 275 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" }, 276 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" }, 277 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" }, 278 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array" }, 279 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array" }, 280 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" }, 281 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array" }, 282 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" }, 283 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" }, 284 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" }, 285 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" }, 286 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" }, 287 { 0, 0, 0, NULL } 288}; 289 290/************************************************************************ 291 * Find a match for the device in our list of known adapters. 292 */ 293static int 294ciss_lookup(device_t dev) 295{ 296 int i; 297 298 for (i = 0; ciss_vendor_data[i].desc != NULL; i++) 299 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) && 300 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) { 301 return(i); 302 } 303 return(-1); 304} 305 306/************************************************************************ 307 * Match a known CISS adapter. 308 */ 309static int 310ciss_probe(device_t dev) 311{ 312 int i; 313 314 i = ciss_lookup(dev); 315 if (i != -1) { 316 device_set_desc(dev, ciss_vendor_data[i].desc); 317 return(-10); 318 } 319 return(ENOENT); 320} 321 322/************************************************************************ 323 * Attach the driver to this adapter. 324 */ 325static int 326ciss_attach(device_t dev) 327{ 328 struct ciss_softc *sc; 329 int i, error; 330 331 debug_called(1); 332 333#ifdef CISS_DEBUG 334 /* print structure/union sizes */ 335 debug_struct(ciss_command); 336 debug_struct(ciss_header); 337 debug_union(ciss_device_address); 338 debug_struct(ciss_cdb); 339 debug_struct(ciss_report_cdb); 340 debug_struct(ciss_notify_cdb); 341 debug_struct(ciss_notify); 342 debug_struct(ciss_message_cdb); 343 debug_struct(ciss_error_info_pointer); 344 debug_struct(ciss_error_info); 345 debug_struct(ciss_sg_entry); 346 debug_struct(ciss_config_table); 347 debug_struct(ciss_bmic_cdb); 348 debug_struct(ciss_bmic_id_ldrive); 349 debug_struct(ciss_bmic_id_lstatus); 350 debug_struct(ciss_bmic_id_table); 351 debug_struct(ciss_bmic_id_pdrive); 352 debug_struct(ciss_bmic_blink_pdrive); 353 debug_struct(ciss_bmic_flush_cache); 354 debug_const(CISS_MAX_REQUESTS); 355 debug_const(CISS_MAX_LOGICAL); 356 debug_const(CISS_INTERRUPT_COALESCE_DELAY); 357 debug_const(CISS_INTERRUPT_COALESCE_COUNT); 358 debug_const(CISS_COMMAND_ALLOC_SIZE); 359 debug_const(CISS_COMMAND_SG_LENGTH); 360 361 debug_type(cciss_pci_info_struct); 362 debug_type(cciss_coalint_struct); 363 debug_type(cciss_coalint_struct); 364 debug_type(NodeName_type); 365 debug_type(NodeName_type); 366 debug_type(Heartbeat_type); 367 debug_type(BusTypes_type); 368 debug_type(FirmwareVer_type); 369 debug_type(DriverVer_type); 370 debug_type(IOCTL_Command_struct); 371#endif 372 373 sc = device_get_softc(dev); 374 sc->ciss_dev = dev; 375 376 /* 377 * Work out adapter type. 378 */ 379 i = ciss_lookup(dev); 380 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { 381 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5; 382 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { 383 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; 384 } else { 385 /* really an error on our part */ 386 ciss_printf(sc, "unable to determine hardware type\n"); 387 error = ENXIO; 388 goto out; 389 } 390 391 /* 392 * Do PCI-specific init. 393 */ 394 if ((error = ciss_init_pci(sc)) != 0) 395 goto out; 396 397 /* 398 * Initialise driver queues. 399 */ 400 ciss_initq_free(sc); 401 ciss_initq_busy(sc); 402 ciss_initq_complete(sc); 403 ciss_initq_notify(sc); 404 405 /* 406 * Initialise command/request pool. 407 */ 408 if ((error = ciss_init_requests(sc)) != 0) 409 goto out; 410 411 /* 412 * Get adapter information. 413 */ 414 if ((error = ciss_identify_adapter(sc)) != 0) 415 goto out; 416 417 /* 418 * Find all the physical devices. 419 */ 420 if ((error = ciss_init_physical(sc)) != 0) 421 goto out; 422 423 /* 424 * Build our private table of logical devices. 425 */ 426 if ((error = ciss_init_logical(sc)) != 0) 427 goto out; 428 429 /* 430 * Enable interrupts so that the CAM scan can complete. 431 */ 432 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc); 433 434 /* 435 * Initialise the CAM interface. 436 */ 437 if ((error = ciss_cam_init(sc)) != 0) 438 goto out; 439 440 /* 441 * Start the heartbeat routine and event chain. 442 */ 443 ciss_periodic(sc); 444 445 /* 446 * Create the control device. 447 */ 448 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev), 449 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 450 "ciss%d", device_get_unit(sc->ciss_dev)); 451 sc->ciss_dev_t->si_drv1 = sc; 452 453 /* 454 * The adapter is running; synchronous commands can now sleep 455 * waiting for an interrupt to signal completion. 456 */ 457 sc->ciss_flags |= CISS_FLAG_RUNNING; 458 459 ciss_spawn_notify_thread(sc); 460 461 error = 0; 462 out: 463 if (error != 0) 464 ciss_free(sc); 465 return(error); 466} 467 468/************************************************************************ 469 * Detach the driver from this adapter. 470 */ 471static int 472ciss_detach(device_t dev) 473{ 474 struct ciss_softc *sc = device_get_softc(dev); 475 476 debug_called(1); 477 478 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) 479 return (EBUSY); 480 481 /* flush adapter cache */ 482 ciss_flush_adapter(sc); 483 484 /* release all resources */ 485 ciss_free(sc); 486 487 return(0); 488} 489 490/************************************************************************ 491 * Prepare adapter for system shutdown. 492 */ 493static int 494ciss_shutdown(device_t dev) 495{ 496 struct ciss_softc *sc = device_get_softc(dev); 497 498 debug_called(1); 499 500 /* flush adapter cache */ 501 ciss_flush_adapter(sc); 502 503 return(0); 504} 505 506/************************************************************************ 507 * Perform PCI-specific attachment actions. 508 */ 509static int 510ciss_init_pci(struct ciss_softc *sc) 511{ 512 uintptr_t cbase, csize, cofs; 513 int error; 514 515 debug_called(1); 516 517 /* 518 * Allocate register window first (we need this to find the config 519 * struct). 520 */ 521 error = ENXIO; 522 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS; 523 if ((sc->ciss_regs_resource = 524 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 525 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) { 526 ciss_printf(sc, "can't allocate register window\n"); 527 return(ENXIO); 528 } 529 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource); 530 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource); 531 532 /* 533 * Find the BAR holding the config structure. If it's not the one 534 * we already mapped for registers, map it too. 535 */ 536 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff; 537 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) { 538 if ((sc->ciss_cfg_resource = 539 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 540 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) { 541 ciss_printf(sc, "can't allocate config window\n"); 542 return(ENXIO); 543 } 544 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource); 545 csize = rman_get_end(sc->ciss_cfg_resource) - 546 rman_get_start(sc->ciss_cfg_resource) + 1; 547 } else { 548 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource); 549 csize = rman_get_end(sc->ciss_regs_resource) - 550 rman_get_start(sc->ciss_regs_resource) + 1; 551 } 552 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF); 553 554 /* 555 * Use the base/size/offset values we just calculated to 556 * sanity-check the config structure. If it's OK, point to it. 557 */ 558 if ((cofs + sizeof(struct ciss_config_table)) > csize) { 559 ciss_printf(sc, "config table outside window\n"); 560 return(ENXIO); 561 } 562 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs); 563 debug(1, "config struct at %p", sc->ciss_cfg); 564 565 /* 566 * Validate the config structure. If we supported other transport 567 * methods, we could select amongst them at this point in time. 568 */ 569 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) { 570 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n", 571 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1], 572 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]); 573 return(ENXIO); 574 } 575 if ((sc->ciss_cfg->valence < CISS_MIN_VALENCE) || 576 (sc->ciss_cfg->valence > CISS_MAX_VALENCE)) { 577 ciss_printf(sc, "adapter interface specification (%d) unsupported\n", 578 sc->ciss_cfg->valence); 579 return(ENXIO); 580 } 581 582 /* 583 * Put the board into simple mode, and tell it we're using the low 584 * 4GB of RAM. Set the default interrupt coalescing options. 585 */ 586 if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) { 587 ciss_printf(sc, "adapter does not support 'simple' transport layer\n"); 588 return(ENXIO); 589 } 590 sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE; 591 sc->ciss_cfg->command_physlimit = 0; 592 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY; 593 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT; 594 595#ifdef __i386__ 596 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH; 597#endif 598 599 if (ciss_update_config(sc)) { 600 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n", 601 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR)); 602 return(ENXIO); 603 } 604 if (!(sc->ciss_cfg->active_method != CISS_TRANSPORT_METHOD_SIMPLE)) { 605 ciss_printf(sc, 606 "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n", 607 sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method); 608 return(ENXIO); 609 } 610 611 /* 612 * Wait for the adapter to come ready. 613 */ 614 if ((error = ciss_wait_adapter(sc)) != 0) 615 return(error); 616 617 /* 618 * Turn off interrupts before we go routing anything. 619 */ 620 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); 621 622 /* 623 * Allocate and set up our interrupt. 624 */ 625 sc->ciss_irq_rid = 0; 626 if ((sc->ciss_irq_resource = 627 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 628 RF_ACTIVE | RF_SHAREABLE)) == NULL) { 629 ciss_printf(sc, "can't allocate interrupt\n"); 630 return(ENXIO); 631 } 632 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource, 633 INTR_TYPE_CAM|INTR_ENTROPY, ciss_intr, sc, 634 &sc->ciss_intr)) { 635 ciss_printf(sc, "can't set up interrupt\n"); 636 return(ENXIO); 637 } 638 639 /* 640 * Allocate the parent bus DMA tag appropriate for our PCI 641 * interface. 642 * 643 * Note that "simple" adapters can only address within a 32-bit 644 * span. 645 */ 646 if (bus_dma_tag_create(NULL, /* parent */ 647 1, 0, /* alignment, boundary */ 648 BUS_SPACE_MAXADDR, /* lowaddr */ 649 BUS_SPACE_MAXADDR, /* highaddr */ 650 NULL, NULL, /* filter, filterarg */ 651 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 652 CISS_COMMAND_SG_LENGTH, /* nsegments */ 653 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 654 BUS_DMA_ALLOCNOW, /* flags */ 655 NULL, NULL, /* lockfunc, lockarg */ 656 &sc->ciss_parent_dmat)) { 657 ciss_printf(sc, "can't allocate parent DMA tag\n"); 658 return(ENOMEM); 659 } 660 661 /* 662 * Create DMA tag for mapping buffers into adapter-addressable 663 * space. 664 */ 665 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 666 1, 0, /* alignment, boundary */ 667 BUS_SPACE_MAXADDR, /* lowaddr */ 668 BUS_SPACE_MAXADDR, /* highaddr */ 669 NULL, NULL, /* filter, filterarg */ 670 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */ 671 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 672 0, /* flags */ 673 busdma_lock_mutex, &Giant, /* lockfunc, lockarg */ 674 &sc->ciss_buffer_dmat)) { 675 ciss_printf(sc, "can't allocate buffer DMA tag\n"); 676 return(ENOMEM); 677 } 678 return(0); 679} 680 681/************************************************************************ 682 * Wait for the adapter to come ready. 683 */ 684static int 685ciss_wait_adapter(struct ciss_softc *sc) 686{ 687 int i; 688 689 debug_called(1); 690 691 /* 692 * Wait for the adapter to come ready. 693 */ 694 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) { 695 ciss_printf(sc, "waiting for adapter to come ready...\n"); 696 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) { 697 DELAY(1000000); /* one second */ 698 if (i > 30) { 699 ciss_printf(sc, "timed out waiting for adapter to come ready\n"); 700 return(EIO); 701 } 702 } 703 } 704 return(0); 705} 706 707/************************************************************************ 708 * Flush the adapter cache. 709 */ 710static int 711ciss_flush_adapter(struct ciss_softc *sc) 712{ 713 struct ciss_request *cr; 714 struct ciss_bmic_flush_cache *cbfc; 715 int error, command_status; 716 717 debug_called(1); 718 719 cr = NULL; 720 cbfc = NULL; 721 722 /* 723 * Build a BMIC request to flush the cache. We don't disable 724 * it, as we may be going to do more I/O (eg. we are emulating 725 * the Synchronise Cache command). 726 */ 727 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 728 error = ENOMEM; 729 goto out; 730 } 731 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE, 732 (void **)&cbfc, sizeof(*cbfc))) != 0) 733 goto out; 734 735 /* 736 * Submit the request and wait for it to complete. 737 */ 738 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 739 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error); 740 goto out; 741 } 742 743 /* 744 * Check response. 745 */ 746 ciss_report_request(cr, &command_status, NULL); 747 switch(command_status) { 748 case CISS_CMD_STATUS_SUCCESS: 749 break; 750 default: 751 ciss_printf(sc, "error flushing cache (%s)\n", 752 ciss_name_command_status(command_status)); 753 error = EIO; 754 goto out; 755 } 756 757out: 758 if (cbfc != NULL) 759 free(cbfc, CISS_MALLOC_CLASS); 760 if (cr != NULL) 761 ciss_release_request(cr); 762 return(error); 763} 764 765/************************************************************************ 766 * Allocate memory for the adapter command structures, initialise 767 * the request structures. 768 * 769 * Note that the entire set of commands are allocated in a single 770 * contiguous slab. 771 */ 772static int 773ciss_init_requests(struct ciss_softc *sc) 774{ 775 struct ciss_request *cr; 776 int i; 777 778 debug_called(1); 779 780 /* 781 * Calculate the number of request structures/commands we are 782 * going to provide for this adapter. 783 */ 784 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands); 785 786 if (bootverbose) 787 ciss_printf(sc, "using %d of %d available commands\n", 788 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands); 789 790 /* 791 * Create the DMA tag for commands. 792 */ 793 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 794 1, 0, /* alignment, boundary */ 795 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 796 BUS_SPACE_MAXADDR, /* highaddr */ 797 NULL, NULL, /* filter, filterarg */ 798 CISS_COMMAND_ALLOC_SIZE * 799 sc->ciss_max_requests, 1, /* maxsize, nsegments */ 800 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 801 BUS_DMA_ALLOCNOW, /* flags */ 802 NULL, NULL, /* lockfunc, lockarg */ 803 &sc->ciss_command_dmat)) { 804 ciss_printf(sc, "can't allocate command DMA tag\n"); 805 return(ENOMEM); 806 } 807 /* 808 * Allocate memory and make it available for DMA. 809 */ 810 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command, 811 BUS_DMA_NOWAIT, &sc->ciss_command_map)) { 812 ciss_printf(sc, "can't allocate command memory\n"); 813 return(ENOMEM); 814 } 815 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map, sc->ciss_command, 816 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests, 817 ciss_command_map_helper, sc, 0); 818 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests); 819 820 /* 821 * Set up the request and command structures, push requests onto 822 * the free queue. 823 */ 824 for (i = 1; i < sc->ciss_max_requests; i++) { 825 cr = &sc->ciss_request[i]; 826 cr->cr_sc = sc; 827 cr->cr_tag = i; 828 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap); 829 ciss_enqueue_free(cr); 830 } 831 return(0); 832} 833 834static void 835ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 836{ 837 struct ciss_softc *sc = (struct ciss_softc *)arg; 838 839 sc->ciss_command_phys = segs->ds_addr; 840} 841 842/************************************************************************ 843 * Identify the adapter, print some information about it. 844 */ 845static int 846ciss_identify_adapter(struct ciss_softc *sc) 847{ 848 struct ciss_request *cr; 849 int error, command_status; 850 851 debug_called(1); 852 853 cr = NULL; 854 855 /* 856 * Get a request, allocate storage for the adapter data. 857 */ 858 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR, 859 (void **)&sc->ciss_id, 860 sizeof(*sc->ciss_id))) != 0) 861 goto out; 862 863 /* 864 * Submit the request and wait for it to complete. 865 */ 866 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 867 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error); 868 goto out; 869 } 870 871 /* 872 * Check response. 873 */ 874 ciss_report_request(cr, &command_status, NULL); 875 switch(command_status) { 876 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 877 break; 878 case CISS_CMD_STATUS_DATA_UNDERRUN: 879 case CISS_CMD_STATUS_DATA_OVERRUN: 880 ciss_printf(sc, "data over/underrun reading adapter information\n"); 881 default: 882 ciss_printf(sc, "error reading adapter information (%s)\n", 883 ciss_name_command_status(command_status)); 884 error = EIO; 885 goto out; 886 } 887 888 /* sanity-check reply */ 889 if (!sc->ciss_id->big_map_supported) { 890 ciss_printf(sc, "adapter does not support BIG_MAP\n"); 891 error = ENXIO; 892 goto out; 893 } 894 895#if 0 896 /* XXX later revisions may not need this */ 897 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; 898#endif 899 900 /* XXX only really required for old 5300 adapters? */ 901 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; 902 903 /* print information */ 904 if (bootverbose) { 905#if 0 /* XXX proxy volumes??? */ 906 ciss_printf(sc, " %d logical drive%s configured\n", 907 sc->ciss_id->configured_logical_drives, 908 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); 909#endif 910 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision); 911 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count); 912 913 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature); 914 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence); 915 ciss_printf(sc, " supported I/O methods 0x%b\n", 916 sc->ciss_cfg->supported_methods, 917 "\20\1READY\2simple\3performant\4MEMQ\n"); 918 ciss_printf(sc, " active I/O method 0x%b\n", 919 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n"); 920 ciss_printf(sc, " 4G page base 0x%08x\n", 921 sc->ciss_cfg->command_physlimit); 922 ciss_printf(sc, " interrupt coalesce delay %dus\n", 923 sc->ciss_cfg->interrupt_coalesce_delay); 924 ciss_printf(sc, " interrupt coalesce count %d\n", 925 sc->ciss_cfg->interrupt_coalesce_count); 926 ciss_printf(sc, " max outstanding commands %d\n", 927 sc->ciss_cfg->max_outstanding_commands); 928 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types, 929 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n"); 930 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name); 931 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat); 932 } 933 934out: 935 if (error) { 936 if (sc->ciss_id != NULL) { 937 free(sc->ciss_id, CISS_MALLOC_CLASS); 938 sc->ciss_id = NULL; 939 } 940 } 941 if (cr != NULL) 942 ciss_release_request(cr); 943 return(error); 944} 945 946/************************************************************************ 947 * Helper routine for generating a list of logical and physical luns. 948 */ 949static struct ciss_lun_report * 950ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits) 951{ 952 struct ciss_request *cr; 953 struct ciss_command *cc; 954 struct ciss_report_cdb *crc; 955 struct ciss_lun_report *cll; 956 int command_status; 957 int report_size; 958 int error = 0; 959 960 debug_called(1); 961 962 cr = NULL; 963 cll = NULL; 964 965 /* 966 * Get a request, allocate storage for the address list. 967 */ 968 if ((error = ciss_get_request(sc, &cr)) != 0) 969 goto out; 970 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address); 971 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 972 ciss_printf(sc, "can't allocate memory for lun report\n"); 973 error = ENOMEM; 974 goto out; 975 } 976 977 /* 978 * Build the Report Logical/Physical LUNs command. 979 */ 980 cc = CISS_FIND_COMMAND(cr); 981 cr->cr_data = cll; 982 cr->cr_length = report_size; 983 cr->cr_flags = CISS_REQ_DATAIN; 984 985 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 986 cc->header.address.physical.bus = 0; 987 cc->header.address.physical.target = 0; 988 cc->cdb.cdb_length = sizeof(*crc); 989 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 990 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 991 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 992 cc->cdb.timeout = 30; /* XXX better suggestions? */ 993 994 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]); 995 bzero(crc, sizeof(*crc)); 996 crc->opcode = opcode; 997 crc->length = htonl(report_size); /* big-endian field */ 998 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */ 999 1000 /* 1001 * Submit the request and wait for it to complete. (timeout 1002 * here should be much greater than above) 1003 */ 1004 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1005 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error); 1006 goto out; 1007 } 1008 1009 /* 1010 * Check response. Note that data over/underrun is OK. 1011 */ 1012 ciss_report_request(cr, &command_status, NULL); 1013 switch(command_status) { 1014 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1015 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */ 1016 break; 1017 case CISS_CMD_STATUS_DATA_OVERRUN: 1018 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n", 1019 CISS_MAX_LOGICAL); 1020 break; 1021 default: 1022 ciss_printf(sc, "error detecting logical drive configuration (%s)\n", 1023 ciss_name_command_status(command_status)); 1024 error = EIO; 1025 goto out; 1026 } 1027 ciss_release_request(cr); 1028 cr = NULL; 1029 1030out: 1031 if (cr != NULL) 1032 ciss_release_request(cr); 1033 if (error && cll != NULL) { 1034 free(cll, CISS_MALLOC_CLASS); 1035 cll = NULL; 1036 } 1037 return(cll); 1038} 1039 1040/************************************************************************ 1041 * Find logical drives on the adapter. 1042 */ 1043static int 1044ciss_init_logical(struct ciss_softc *sc) 1045{ 1046 struct ciss_lun_report *cll; 1047 int error = 0, i, j; 1048 int ndrives; 1049 1050 debug_called(1); 1051 1052 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 1053 CISS_MAX_LOGICAL); 1054 if (cll == NULL) { 1055 error = ENXIO; 1056 goto out; 1057 } 1058 1059 /* sanity-check reply */ 1060 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1061 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) { 1062 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n", 1063 ndrives, CISS_MAX_LOGICAL); 1064 error = ENXIO; 1065 goto out; 1066 } 1067 1068 /* 1069 * Save logical drive information. 1070 */ 1071 if (bootverbose) { 1072 ciss_printf(sc, "%d logical drive%s\n", 1073 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : ""); 1074 } 1075 1076 sc->ciss_logical = 1077 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *), 1078 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1079 if (sc->ciss_logical == NULL) { 1080 error = ENXIO; 1081 goto out; 1082 } 1083 1084 for (i = 0; i <= sc->ciss_max_logical_bus; i++) { 1085 sc->ciss_logical[i] = 1086 malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive), 1087 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1088 if (sc->ciss_logical[i] == NULL) { 1089 error = ENXIO; 1090 goto out; 1091 } 1092 1093 for (j = 0; j < CISS_MAX_LOGICAL; j++) 1094 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT; 1095 } 1096 1097 1098 for (i = 0; i < CISS_MAX_LOGICAL; i++) { 1099 if (i < ndrives) { 1100 struct ciss_ldrive *ld; 1101 int bus, target; 1102 1103 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 1104 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 1105 ld = &sc->ciss_logical[bus][target]; 1106 1107 ld->cl_address = cll->lun[i]; 1108 ld->cl_controller = &sc->ciss_controllers[bus]; 1109 if (ciss_identify_logical(sc, ld) != 0) 1110 continue; 1111 /* 1112 * If the drive has had media exchanged, we should bring it online. 1113 */ 1114 if (ld->cl_lstatus->media_exchanged) 1115 ciss_accept_media(sc, ld); 1116 1117 } 1118 } 1119 1120 out: 1121 if (cll != NULL) 1122 free(cll, CISS_MALLOC_CLASS); 1123 return(error); 1124} 1125 1126static int 1127ciss_init_physical(struct ciss_softc *sc) 1128{ 1129 struct ciss_lun_report *cll; 1130 int error = 0, i; 1131 int nphys; 1132 int bus, target; 1133 1134 debug_called(1); 1135 1136 bus = 0; 1137 target = 0; 1138 1139 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 1140 CISS_MAX_PHYSICAL); 1141 if (cll == NULL) { 1142 error = ENXIO; 1143 goto out; 1144 } 1145 1146 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1147 1148 if (bootverbose) { 1149 ciss_printf(sc, "%d physical device%s\n", 1150 nphys, (nphys > 1 || nphys == 0) ? "s" : ""); 1151 } 1152 1153 /* 1154 * Figure out the bus mapping. 1155 * Logical buses include both the local logical bus for local arrays and 1156 * proxy buses for remote arrays. Physical buses are numbered by the 1157 * controller and represent physical buses that hold physical devices. 1158 * We shift these bus numbers so that everything fits into a single flat 1159 * numbering space for CAM. Logical buses occupy the first 32 CAM bus 1160 * numbers, and the physical bus numbers are shifted to be above that. 1161 * This results in the various driver arrays being indexed as follows: 1162 * 1163 * ciss_controllers[] - indexed by logical bus 1164 * ciss_cam_sim[] - indexed by both logical and physical, with physical 1165 * being shifted by 32. 1166 * ciss_logical[][] - indexed by logical bus 1167 * ciss_physical[][] - indexed by physical bus 1168 * 1169 * XXX This is getting more and more hackish. CISS really doesn't play 1170 * well with a standard SCSI model; devices are addressed via magic 1171 * cookies, not via b/t/l addresses. Since there is no way to store 1172 * the cookie in the CAM device object, we have to keep these lookup 1173 * tables handy so that the devices can be found quickly at the cost 1174 * of wasting memory and having a convoluted lookup scheme. This 1175 * driver should probably be converted to block interface. 1176 */ 1177 /* 1178 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy 1179 * controller. A proxy controller is another physical controller 1180 * behind the primary PCI controller. We need to know about this 1181 * so that BMIC commands can be properly targeted. There can be 1182 * proxy controllers attached to a single PCI controller, so 1183 * find the highest numbered one so the array can be properly 1184 * sized. 1185 */ 1186 sc->ciss_max_logical_bus = 1; 1187 for (i = 0; i < nphys; i++) { 1188 if (cll->lun[i].physical.extra_address == 0) { 1189 bus = cll->lun[i].physical.bus; 1190 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1; 1191 } else { 1192 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address); 1193 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus); 1194 } 1195 } 1196 1197 sc->ciss_controllers = 1198 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address), 1199 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1200 1201 if (sc->ciss_controllers == NULL) { 1202 ciss_printf(sc, "Could not allocate memory for controller map\n"); 1203 error = ENOMEM; 1204 goto out; 1205 } 1206 1207 /* setup a map of controller addresses */ 1208 for (i = 0; i < nphys; i++) { 1209 if (cll->lun[i].physical.extra_address == 0) { 1210 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i]; 1211 } 1212 } 1213 1214 sc->ciss_physical = 1215 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *), 1216 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1217 if (sc->ciss_physical == NULL) { 1218 ciss_printf(sc, "Could not allocate memory for physical device map\n"); 1219 error = ENOMEM; 1220 goto out; 1221 } 1222 1223 for (i = 0; i < sc->ciss_max_physical_bus; i++) { 1224 sc->ciss_physical[i] = 1225 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT, 1226 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1227 if (sc->ciss_physical[i] == NULL) { 1228 ciss_printf(sc, "Could not allocate memory for target map\n"); 1229 error = ENOMEM; 1230 goto out; 1231 } 1232 } 1233 1234 ciss_filter_physical(sc, cll); 1235 1236out: 1237 if (cll != NULL) 1238 free(cll, CISS_MALLOC_CLASS); 1239 1240 return(error); 1241} 1242 1243static int 1244ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll) 1245{ 1246 u_int32_t ea; 1247 int i, nphys; 1248 int bus, target; 1249 1250 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1251 for (i = 0; i < nphys; i++) { 1252 if (cll->lun[i].physical.extra_address == 0) 1253 continue; 1254 1255 /* 1256 * Filter out devices that we don't want. Level 3 LUNs could 1257 * probably be supported, but the docs don't give enough of a 1258 * hint to know how. 1259 * 1260 * The mode field of the physical address is likely set to have 1261 * hard disks masked out. Honor it unless the user has overridden 1262 * us with the tunable. We also munge the inquiry data for these 1263 * disks so that they only show up as passthrough devices. Keeping 1264 * them visible in this fashion is useful for doing things like 1265 * flashing firmware. 1266 */ 1267 ea = cll->lun[i].physical.extra_address; 1268 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) || 1269 (CISS_EXTRA_MODE2(ea) == 0x3)) 1270 continue; 1271 if ((ciss_expose_hidden_physical == 0) && 1272 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL)) 1273 continue; 1274 1275 /* 1276 * Note: CISS firmware numbers physical busses starting at '1', not 1277 * '0'. This numbering is internal to the firmware and is only 1278 * used as a hint here. 1279 */ 1280 bus = CISS_EXTRA_BUS2(ea) - 1; 1281 target = CISS_EXTRA_TARGET2(ea); 1282 sc->ciss_physical[bus][target].cp_address = cll->lun[i]; 1283 sc->ciss_physical[bus][target].cp_online = 1; 1284 } 1285 1286 return (0); 1287} 1288 1289static int 1290ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1291{ 1292 struct ciss_request *cr; 1293 struct ciss_command *cc; 1294 struct scsi_inquiry *inq; 1295 int error; 1296 int command_status; 1297 1298 cr = NULL; 1299 1300 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry)); 1301 1302 if ((error = ciss_get_request(sc, &cr)) != 0) 1303 goto out; 1304 1305 cc = CISS_FIND_COMMAND(cr); 1306 cr->cr_data = &ld->cl_geometry; 1307 cr->cr_length = sizeof(ld->cl_geometry); 1308 cr->cr_flags = CISS_REQ_DATAIN; 1309 1310 cc->header.address = ld->cl_address; 1311 cc->cdb.cdb_length = 6; 1312 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1313 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1314 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1315 cc->cdb.timeout = 30; 1316 1317 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]); 1318 inq->opcode = INQUIRY; 1319 inq->byte2 = SI_EVPD; 1320 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY; 1321 inq->length = sizeof(ld->cl_geometry); 1322 1323 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1324 ciss_printf(sc, "error getting geometry (%d)\n", error); 1325 goto out; 1326 } 1327 1328 ciss_report_request(cr, &command_status, NULL); 1329 switch(command_status) { 1330 case CISS_CMD_STATUS_SUCCESS: 1331 case CISS_CMD_STATUS_DATA_UNDERRUN: 1332 break; 1333 case CISS_CMD_STATUS_DATA_OVERRUN: 1334 ciss_printf(sc, "WARNING: Data overrun\n"); 1335 break; 1336 default: 1337 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n", 1338 ciss_name_command_status(command_status)); 1339 break; 1340 } 1341 1342out: 1343 if (cr != NULL) 1344 ciss_release_request(cr); 1345 return(error); 1346} 1347/************************************************************************ 1348 * Identify a logical drive, initialise state related to it. 1349 */ 1350static int 1351ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1352{ 1353 struct ciss_request *cr; 1354 struct ciss_command *cc; 1355 struct ciss_bmic_cdb *cbc; 1356 int error, command_status; 1357 1358 debug_called(1); 1359 1360 cr = NULL; 1361 1362 /* 1363 * Build a BMIC request to fetch the drive ID. 1364 */ 1365 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE, 1366 (void **)&ld->cl_ldrive, 1367 sizeof(*ld->cl_ldrive))) != 0) 1368 goto out; 1369 cc = CISS_FIND_COMMAND(cr); 1370 cc->header.address = *ld->cl_controller; /* target controller */ 1371 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1372 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1373 1374 /* 1375 * Submit the request and wait for it to complete. 1376 */ 1377 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1378 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error); 1379 goto out; 1380 } 1381 1382 /* 1383 * Check response. 1384 */ 1385 ciss_report_request(cr, &command_status, NULL); 1386 switch(command_status) { 1387 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1388 break; 1389 case CISS_CMD_STATUS_DATA_UNDERRUN: 1390 case CISS_CMD_STATUS_DATA_OVERRUN: 1391 ciss_printf(sc, "data over/underrun reading logical drive ID\n"); 1392 default: 1393 ciss_printf(sc, "error reading logical drive ID (%s)\n", 1394 ciss_name_command_status(command_status)); 1395 error = EIO; 1396 goto out; 1397 } 1398 ciss_release_request(cr); 1399 cr = NULL; 1400 1401 /* 1402 * Build a CISS BMIC command to get the logical drive status. 1403 */ 1404 if ((error = ciss_get_ldrive_status(sc, ld)) != 0) 1405 goto out; 1406 1407 /* 1408 * Get the logical drive geometry. 1409 */ 1410 if ((error = ciss_inquiry_logical(sc, ld)) != 0) 1411 goto out; 1412 1413 /* 1414 * Print the drive's basic characteristics. 1415 */ 1416 if (bootverbose) { 1417 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ", 1418 CISS_LUN_TO_BUS(ld->cl_address.logical.lun), 1419 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun), 1420 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance), 1421 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) * 1422 ld->cl_ldrive->block_size)); 1423 1424 ciss_print_ldrive(sc, ld); 1425 } 1426out: 1427 if (error != 0) { 1428 /* make the drive not-exist */ 1429 ld->cl_status = CISS_LD_NONEXISTENT; 1430 if (ld->cl_ldrive != NULL) { 1431 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 1432 ld->cl_ldrive = NULL; 1433 } 1434 if (ld->cl_lstatus != NULL) { 1435 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 1436 ld->cl_lstatus = NULL; 1437 } 1438 } 1439 if (cr != NULL) 1440 ciss_release_request(cr); 1441 1442 return(error); 1443} 1444 1445/************************************************************************ 1446 * Get status for a logical drive. 1447 * 1448 * XXX should we also do this in response to Test Unit Ready? 1449 */ 1450static int 1451ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld) 1452{ 1453 struct ciss_request *cr; 1454 struct ciss_command *cc; 1455 struct ciss_bmic_cdb *cbc; 1456 int error, command_status; 1457 1458 /* 1459 * Build a CISS BMIC command to get the logical drive status. 1460 */ 1461 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS, 1462 (void **)&ld->cl_lstatus, 1463 sizeof(*ld->cl_lstatus))) != 0) 1464 goto out; 1465 cc = CISS_FIND_COMMAND(cr); 1466 cc->header.address = *ld->cl_controller; /* target controller */ 1467 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1468 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1469 1470 /* 1471 * Submit the request and wait for it to complete. 1472 */ 1473 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1474 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); 1475 goto out; 1476 } 1477 1478 /* 1479 * Check response. 1480 */ 1481 ciss_report_request(cr, &command_status, NULL); 1482 switch(command_status) { 1483 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1484 break; 1485 case CISS_CMD_STATUS_DATA_UNDERRUN: 1486 case CISS_CMD_STATUS_DATA_OVERRUN: 1487 ciss_printf(sc, "data over/underrun reading logical drive status\n"); 1488 default: 1489 ciss_printf(sc, "error reading logical drive status (%s)\n", 1490 ciss_name_command_status(command_status)); 1491 error = EIO; 1492 goto out; 1493 } 1494 1495 /* 1496 * Set the drive's summary status based on the returned status. 1497 * 1498 * XXX testing shows that a failed JBOD drive comes back at next 1499 * boot in "queued for expansion" mode. WTF? 1500 */ 1501 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status); 1502 1503out: 1504 if (cr != NULL) 1505 ciss_release_request(cr); 1506 return(error); 1507} 1508 1509/************************************************************************ 1510 * Notify the adapter of a config update. 1511 */ 1512static int 1513ciss_update_config(struct ciss_softc *sc) 1514{ 1515 int i; 1516 1517 debug_called(1); 1518 1519 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE); 1520 for (i = 0; i < 1000; i++) { 1521 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) & 1522 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) { 1523 return(0); 1524 } 1525 DELAY(1000); 1526 } 1527 return(1); 1528} 1529 1530/************************************************************************ 1531 * Accept new media into a logical drive. 1532 * 1533 * XXX The drive has previously been offline; it would be good if we 1534 * could make sure it's not open right now. 1535 */ 1536static int 1537ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld) 1538{ 1539 struct ciss_request *cr; 1540 struct ciss_command *cc; 1541 struct ciss_bmic_cdb *cbc; 1542 int command_status; 1543 int error = 0, ldrive; 1544 1545 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1546 1547 debug(0, "bringing logical drive %d back online"); 1548 1549 /* 1550 * Build a CISS BMIC command to bring the drive back online. 1551 */ 1552 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA, 1553 NULL, 0)) != 0) 1554 goto out; 1555 cc = CISS_FIND_COMMAND(cr); 1556 cc->header.address = *ld->cl_controller; /* target controller */ 1557 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1558 cbc->log_drive = ldrive; 1559 1560 /* 1561 * Submit the request and wait for it to complete. 1562 */ 1563 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1564 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error); 1565 goto out; 1566 } 1567 1568 /* 1569 * Check response. 1570 */ 1571 ciss_report_request(cr, &command_status, NULL); 1572 switch(command_status) { 1573 case CISS_CMD_STATUS_SUCCESS: /* all OK */ 1574 /* we should get a logical drive status changed event here */ 1575 break; 1576 default: 1577 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n", 1578 ciss_name_command_status(command_status)); 1579 break; 1580 } 1581 1582out: 1583 if (cr != NULL) 1584 ciss_release_request(cr); 1585 return(error); 1586} 1587 1588/************************************************************************ 1589 * Release adapter resources. 1590 */ 1591static void 1592ciss_free(struct ciss_softc *sc) 1593{ 1594 struct ciss_request *cr; 1595 int i; 1596 1597 debug_called(1); 1598 1599 /* we're going away */ 1600 sc->ciss_flags |= CISS_FLAG_ABORTING; 1601 1602 /* terminate the periodic heartbeat routine */ 1603 untimeout(ciss_periodic, sc, sc->ciss_periodic); 1604 1605 /* cancel the Event Notify chain */ 1606 ciss_notify_abort(sc); 1607 1608 ciss_kill_notify_thread(sc); 1609 1610 /* remove the control device */ 1611 if (sc->ciss_dev_t != NULL) 1612 destroy_dev(sc->ciss_dev_t); 1613 1614 /* free the controller data */ 1615 if (sc->ciss_id != NULL) 1616 free(sc->ciss_id, CISS_MALLOC_CLASS); 1617 1618 /* release I/O resources */ 1619 if (sc->ciss_regs_resource != NULL) 1620 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1621 sc->ciss_regs_rid, sc->ciss_regs_resource); 1622 if (sc->ciss_cfg_resource != NULL) 1623 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1624 sc->ciss_cfg_rid, sc->ciss_cfg_resource); 1625 if (sc->ciss_intr != NULL) 1626 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr); 1627 if (sc->ciss_irq_resource != NULL) 1628 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ, 1629 sc->ciss_irq_rid, sc->ciss_irq_resource); 1630 1631 /* destroy DMA tags */ 1632 if (sc->ciss_parent_dmat) 1633 bus_dma_tag_destroy(sc->ciss_parent_dmat); 1634 1635 while ((cr = ciss_dequeue_free(sc)) != NULL) 1636 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap); 1637 if (sc->ciss_buffer_dmat) 1638 bus_dma_tag_destroy(sc->ciss_buffer_dmat); 1639 1640 /* destroy command memory and DMA tag */ 1641 if (sc->ciss_command != NULL) { 1642 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map); 1643 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map); 1644 } 1645 if (sc->ciss_command_dmat) 1646 bus_dma_tag_destroy(sc->ciss_command_dmat); 1647 1648 /* disconnect from CAM */ 1649 if (sc->ciss_cam_sim) { 1650 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 1651 if (sc->ciss_cam_sim[i]) { 1652 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1653 cam_sim_free(sc->ciss_cam_sim[i], 0); 1654 } 1655 } 1656 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 1657 CISS_PHYSICAL_BASE; i++) { 1658 if (sc->ciss_cam_sim[i]) { 1659 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1660 cam_sim_free(sc->ciss_cam_sim[i], 0); 1661 } 1662 } 1663 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS); 1664 } 1665 if (sc->ciss_cam_devq) 1666 cam_simq_free(sc->ciss_cam_devq); 1667 1668 if (sc->ciss_logical) { 1669 for (i = 0; i < sc->ciss_max_logical_bus; i++) 1670 free(sc->ciss_logical[i], CISS_MALLOC_CLASS); 1671 free(sc->ciss_logical, CISS_MALLOC_CLASS); 1672 } 1673 1674 if (sc->ciss_physical) { 1675 for (i = 0; i < sc->ciss_max_physical_bus; i++) 1676 free(sc->ciss_physical[i], CISS_MALLOC_CLASS); 1677 free(sc->ciss_physical, CISS_MALLOC_CLASS); 1678 } 1679 1680 if (sc->ciss_controllers) 1681 free(sc->ciss_controllers, CISS_MALLOC_CLASS); 1682} 1683 1684/************************************************************************ 1685 * Give a command to the adapter. 1686 * 1687 * Note that this uses the simple transport layer directly. If we 1688 * want to add support for other layers, we'll need a switch of some 1689 * sort. 1690 * 1691 * Note that the simple transport layer has no way of refusing a 1692 * command; we only have as many request structures as the adapter 1693 * supports commands, so we don't have to check (this presumes that 1694 * the adapter can handle commands as fast as we throw them at it). 1695 */ 1696static int 1697ciss_start(struct ciss_request *cr) 1698{ 1699 struct ciss_command *cc; /* XXX debugging only */ 1700 int error; 1701 1702 cc = CISS_FIND_COMMAND(cr); 1703 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag); 1704 1705 /* 1706 * Map the request's data. 1707 */ 1708 if ((error = ciss_map_request(cr))) 1709 return(error); 1710 1711#if 0 1712 ciss_print_request(cr); 1713#endif 1714 1715 return(0); 1716} 1717 1718/************************************************************************ 1719 * Fetch completed request(s) from the adapter, queue them for 1720 * completion handling. 1721 * 1722 * Note that this uses the simple transport layer directly. If we 1723 * want to add support for other layers, we'll need a switch of some 1724 * sort. 1725 * 1726 * Note that the simple transport mechanism does not require any 1727 * reentrancy protection; the OPQ read is atomic. If there is a 1728 * chance of a race with something else that might move the request 1729 * off the busy list, then we will have to lock against that 1730 * (eg. timeouts, etc.) 1731 */ 1732static void 1733ciss_done(struct ciss_softc *sc) 1734{ 1735 struct ciss_request *cr; 1736 struct ciss_command *cc; 1737 u_int32_t tag, index; 1738 int complete; 1739 1740 debug_called(3); 1741 1742 /* 1743 * Loop quickly taking requests from the adapter and moving them 1744 * from the busy queue to the completed queue. 1745 */ 1746 complete = 0; 1747 for (;;) { 1748 1749 /* see if the OPQ contains anything */ 1750 if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc)) 1751 break; 1752 1753 tag = CISS_TL_SIMPLE_FETCH_CMD(sc); 1754 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY) 1755 break; 1756 index = tag >> 2; 1757 debug(2, "completed command %d%s", index, 1758 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); 1759 if (index >= sc->ciss_max_requests) { 1760 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); 1761 continue; 1762 } 1763 cr = &(sc->ciss_request[index]); 1764 cc = CISS_FIND_COMMAND(cr); 1765 cc->header.host_tag = tag; /* not updated by adapter */ 1766 if (ciss_remove_busy(cr)) { 1767 /* assume this is garbage out of the adapter */ 1768 ciss_printf(sc, "completed nonbusy request %d\n", index); 1769 } else { 1770 ciss_enqueue_complete(cr); 1771 } 1772 complete = 1; 1773 } 1774 1775 /* 1776 * Invoke completion processing. If we can defer this out of 1777 * interrupt context, that'd be good. 1778 */ 1779 if (complete) 1780 ciss_complete(sc); 1781} 1782 1783/************************************************************************ 1784 * Take an interrupt from the adapter. 1785 */ 1786static void 1787ciss_intr(void *arg) 1788{ 1789 struct ciss_softc *sc = (struct ciss_softc *)arg; 1790 1791 /* 1792 * The only interrupt we recognise indicates that there are 1793 * entries in the outbound post queue. 1794 */ 1795 ciss_done(sc); 1796} 1797 1798/************************************************************************ 1799 * Process completed requests. 1800 * 1801 * Requests can be completed in three fashions: 1802 * 1803 * - by invoking a callback function (cr_complete is non-null) 1804 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set) 1805 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context 1806 */ 1807static void 1808ciss_complete(struct ciss_softc *sc) 1809{ 1810 struct ciss_request *cr; 1811 1812 debug_called(2); 1813 1814 /* 1815 * Loop taking requests off the completed queue and performing 1816 * completion processing on them. 1817 */ 1818 for (;;) { 1819 if ((cr = ciss_dequeue_complete(sc)) == NULL) 1820 break; 1821 ciss_unmap_request(cr); 1822 1823 /* 1824 * If the request has a callback, invoke it. 1825 */ 1826 if (cr->cr_complete != NULL) { 1827 cr->cr_complete(cr); 1828 continue; 1829 } 1830 1831 /* 1832 * If someone is sleeping on this request, wake them up. 1833 */ 1834 if (cr->cr_flags & CISS_REQ_SLEEP) { 1835 cr->cr_flags &= ~CISS_REQ_SLEEP; 1836 wakeup(cr); 1837 continue; 1838 } 1839 1840 /* 1841 * If someone is polling this request for completion, signal. 1842 */ 1843 if (cr->cr_flags & CISS_REQ_POLL) { 1844 cr->cr_flags &= ~CISS_REQ_POLL; 1845 continue; 1846 } 1847 1848 /* 1849 * Give up and throw the request back on the free queue. This 1850 * should never happen; resources will probably be lost. 1851 */ 1852 ciss_printf(sc, "WARNING: completed command with no submitter\n"); 1853 ciss_enqueue_free(cr); 1854 } 1855} 1856 1857/************************************************************************ 1858 * Report on the completion status of a request, and pass back SCSI 1859 * and command status values. 1860 */ 1861static int 1862ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status) 1863{ 1864 struct ciss_command *cc; 1865 struct ciss_error_info *ce; 1866 1867 debug_called(2); 1868 1869 cc = CISS_FIND_COMMAND(cr); 1870 ce = (struct ciss_error_info *)&(cc->sg[0]); 1871 1872 /* 1873 * We don't consider data under/overrun an error for the Report 1874 * Logical/Physical LUNs commands. 1875 */ 1876 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) && 1877 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || 1878 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS))) { 1879 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR; 1880 debug(2, "ignoring irrelevant under/overrun error"); 1881 } 1882 1883 /* 1884 * Check the command's error bit, if clear, there's no status and 1885 * everything is OK. 1886 */ 1887 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) { 1888 if (scsi_status != NULL) 1889 *scsi_status = SCSI_STATUS_OK; 1890 if (command_status != NULL) 1891 *command_status = CISS_CMD_STATUS_SUCCESS; 1892 return(0); 1893 } else { 1894 if (command_status != NULL) 1895 *command_status = ce->command_status; 1896 if (scsi_status != NULL) { 1897 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) { 1898 *scsi_status = ce->scsi_status; 1899 } else { 1900 *scsi_status = -1; 1901 } 1902 } 1903 if (bootverbose) 1904 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n", 1905 ce->command_status, ciss_name_command_status(ce->command_status), 1906 ce->scsi_status); 1907 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) { 1908 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x\n", 1909 ce->additional_error_info.invalid_command.offense_size, 1910 ce->additional_error_info.invalid_command.offense_offset, 1911 ce->additional_error_info.invalid_command.offense_value); 1912 } 1913 } 1914#if 0 1915 ciss_print_request(cr); 1916#endif 1917 return(1); 1918} 1919 1920/************************************************************************ 1921 * Issue a request and don't return until it's completed. 1922 * 1923 * Depending on adapter status, we may poll or sleep waiting for 1924 * completion. 1925 */ 1926static int 1927ciss_synch_request(struct ciss_request *cr, int timeout) 1928{ 1929 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) { 1930 return(ciss_wait_request(cr, timeout)); 1931 } else { 1932 return(ciss_poll_request(cr, timeout)); 1933 } 1934} 1935 1936/************************************************************************ 1937 * Issue a request and poll for completion. 1938 * 1939 * Timeout in milliseconds. 1940 */ 1941static int 1942ciss_poll_request(struct ciss_request *cr, int timeout) 1943{ 1944 int error; 1945 1946 debug_called(2); 1947 1948 cr->cr_flags |= CISS_REQ_POLL; 1949 if ((error = ciss_start(cr)) != 0) 1950 return(error); 1951 1952 do { 1953 ciss_done(cr->cr_sc); 1954 if (!(cr->cr_flags & CISS_REQ_POLL)) 1955 return(0); 1956 DELAY(1000); 1957 } while (timeout-- >= 0); 1958 return(EWOULDBLOCK); 1959} 1960 1961/************************************************************************ 1962 * Issue a request and sleep waiting for completion. 1963 * 1964 * Timeout in milliseconds. Note that a spurious wakeup will reset 1965 * the timeout. 1966 */ 1967static int 1968ciss_wait_request(struct ciss_request *cr, int timeout) 1969{ 1970 int s, error; 1971 1972 debug_called(2); 1973 1974 cr->cr_flags |= CISS_REQ_SLEEP; 1975 if ((error = ciss_start(cr)) != 0) 1976 return(error); 1977 1978 s = splcam(); 1979 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) { 1980 error = tsleep(cr, PRIBIO, "cissREQ", (timeout * hz) / 1000); 1981 } 1982 splx(s); 1983 return(error); 1984} 1985 1986#if 0 1987/************************************************************************ 1988 * Abort a request. Note that a potential exists here to race the 1989 * request being completed; the caller must deal with this. 1990 */ 1991static int 1992ciss_abort_request(struct ciss_request *ar) 1993{ 1994 struct ciss_request *cr; 1995 struct ciss_command *cc; 1996 struct ciss_message_cdb *cmc; 1997 int error; 1998 1999 debug_called(1); 2000 2001 /* get a request */ 2002 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0) 2003 return(error); 2004 2005 /* build the abort command */ 2006 cc = CISS_FIND_COMMAND(cr); 2007 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */ 2008 cc->header.address.physical.target = 0; 2009 cc->header.address.physical.bus = 0; 2010 cc->cdb.cdb_length = sizeof(*cmc); 2011 cc->cdb.type = CISS_CDB_TYPE_MESSAGE; 2012 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2013 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2014 cc->cdb.timeout = 30; 2015 2016 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]); 2017 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT; 2018 cmc->type = CISS_MESSAGE_ABORT_TASK; 2019 cmc->abort_tag = ar->cr_tag; /* endianness?? */ 2020 2021 /* 2022 * Send the request and wait for a response. If we believe we 2023 * aborted the request OK, clear the flag that indicates it's 2024 * running. 2025 */ 2026 error = ciss_synch_request(cr, 35 * 1000); 2027 if (!error) 2028 error = ciss_report_request(cr, NULL, NULL); 2029 ciss_release_request(cr); 2030 2031 return(error); 2032} 2033#endif 2034 2035 2036/************************************************************************ 2037 * Fetch and initialise a request 2038 */ 2039static int 2040ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp) 2041{ 2042 struct ciss_request *cr; 2043 2044 debug_called(2); 2045 2046 /* 2047 * Get a request and clean it up. 2048 */ 2049 if ((cr = ciss_dequeue_free(sc)) == NULL) 2050 return(ENOMEM); 2051 2052 cr->cr_data = NULL; 2053 cr->cr_flags = 0; 2054 cr->cr_complete = NULL; 2055 cr->cr_private = NULL; 2056 2057 ciss_preen_command(cr); 2058 *crp = cr; 2059 return(0); 2060} 2061 2062static void 2063ciss_preen_command(struct ciss_request *cr) 2064{ 2065 struct ciss_command *cc; 2066 u_int32_t cmdphys; 2067 2068 /* 2069 * Clean up the command structure. 2070 * 2071 * Note that we set up the error_info structure here, since the 2072 * length can be overwritten by any command. 2073 */ 2074 cc = CISS_FIND_COMMAND(cr); 2075 cc->header.sg_in_list = 0; /* kinda inefficient this way */ 2076 cc->header.sg_total = 0; 2077 cc->header.host_tag = cr->cr_tag << 2; 2078 cc->header.host_tag_zeroes = 0; 2079 cmdphys = CISS_FIND_COMMANDPHYS(cr); 2080 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command); 2081 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command); 2082} 2083 2084/************************************************************************ 2085 * Release a request to the free list. 2086 */ 2087static void 2088ciss_release_request(struct ciss_request *cr) 2089{ 2090 struct ciss_softc *sc; 2091 2092 debug_called(2); 2093 2094 sc = cr->cr_sc; 2095 2096 /* release the request to the free queue */ 2097 ciss_requeue_free(cr); 2098} 2099 2100/************************************************************************ 2101 * Allocate a request that will be used to send a BMIC command. Do some 2102 * of the common setup here to avoid duplicating it everywhere else. 2103 */ 2104static int 2105ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 2106 int opcode, void **bufp, size_t bufsize) 2107{ 2108 struct ciss_request *cr; 2109 struct ciss_command *cc; 2110 struct ciss_bmic_cdb *cbc; 2111 void *buf; 2112 int error; 2113 int dataout; 2114 2115 debug_called(2); 2116 2117 cr = NULL; 2118 buf = NULL; 2119 2120 /* 2121 * Get a request. 2122 */ 2123 if ((error = ciss_get_request(sc, &cr)) != 0) 2124 goto out; 2125 2126 /* 2127 * Allocate data storage if requested, determine the data direction. 2128 */ 2129 dataout = 0; 2130 if ((bufsize > 0) && (bufp != NULL)) { 2131 if (*bufp == NULL) { 2132 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 2133 error = ENOMEM; 2134 goto out; 2135 } 2136 } else { 2137 buf = *bufp; 2138 dataout = 1; /* we are given a buffer, so we are writing */ 2139 } 2140 } 2141 2142 /* 2143 * Build a CISS BMIC command to get the logical drive ID. 2144 */ 2145 cr->cr_data = buf; 2146 cr->cr_length = bufsize; 2147 if (!dataout) 2148 cr->cr_flags = CISS_REQ_DATAIN; 2149 2150 cc = CISS_FIND_COMMAND(cr); 2151 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 2152 cc->header.address.physical.bus = 0; 2153 cc->header.address.physical.target = 0; 2154 cc->cdb.cdb_length = sizeof(*cbc); 2155 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2156 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2157 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ; 2158 cc->cdb.timeout = 0; 2159 2160 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 2161 bzero(cbc, sizeof(*cbc)); 2162 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ; 2163 cbc->bmic_opcode = opcode; 2164 cbc->size = htons((u_int16_t)bufsize); 2165 2166out: 2167 if (error) { 2168 if (cr != NULL) 2169 ciss_release_request(cr); 2170 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 2171 free(buf, CISS_MALLOC_CLASS); 2172 } else { 2173 *crp = cr; 2174 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 2175 *bufp = buf; 2176 } 2177 return(error); 2178} 2179 2180/************************************************************************ 2181 * Handle a command passed in from userspace. 2182 */ 2183static int 2184ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc) 2185{ 2186 struct ciss_request *cr; 2187 struct ciss_command *cc; 2188 struct ciss_error_info *ce; 2189 int error = 0; 2190 2191 debug_called(1); 2192 2193 cr = NULL; 2194 2195 /* 2196 * Get a request. 2197 */ 2198 if ((error = ciss_get_request(sc, &cr)) != 0) 2199 goto out; 2200 cc = CISS_FIND_COMMAND(cr); 2201 2202 /* 2203 * Allocate an in-kernel databuffer if required, copy in user data. 2204 */ 2205 cr->cr_length = ioc->buf_size; 2206 if (ioc->buf_size > 0) { 2207 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK)) == NULL) { 2208 error = ENOMEM; 2209 goto out; 2210 } 2211 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) { 2212 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2213 goto out; 2214 } 2215 } 2216 2217 /* 2218 * Build the request based on the user command. 2219 */ 2220 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address)); 2221 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb)); 2222 2223 /* XXX anything else to populate here? */ 2224 2225 /* 2226 * Run the command. 2227 */ 2228 if ((error = ciss_synch_request(cr, 60 * 1000))) { 2229 debug(0, "request failed - %d", error); 2230 goto out; 2231 } 2232 2233 /* 2234 * Check to see if the command succeeded. 2235 */ 2236 ce = (struct ciss_error_info *)&(cc->sg[0]); 2237 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0) 2238 bzero(ce, sizeof(*ce)); 2239 2240 /* 2241 * Copy the results back to the user. 2242 */ 2243 bcopy(ce, &ioc->error_info, sizeof(*ce)); 2244 if ((ioc->buf_size > 0) && 2245 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) { 2246 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2247 goto out; 2248 } 2249 2250 /* done OK */ 2251 error = 0; 2252 2253out: 2254 if ((cr != NULL) && (cr->cr_data != NULL)) 2255 free(cr->cr_data, CISS_MALLOC_CLASS); 2256 if (cr != NULL) 2257 ciss_release_request(cr); 2258 return(error); 2259} 2260 2261/************************************************************************ 2262 * Map a request into bus-visible space, initialise the scatter/gather 2263 * list. 2264 */ 2265static int 2266ciss_map_request(struct ciss_request *cr) 2267{ 2268 struct ciss_softc *sc; 2269 int error = 0; 2270 2271 debug_called(2); 2272 2273 sc = cr->cr_sc; 2274 2275 /* check that mapping is necessary */ 2276 if (cr->cr_flags & CISS_REQ_MAPPED) 2277 return(0); 2278 2279 cr->cr_flags |= CISS_REQ_MAPPED; 2280 2281 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2282 BUS_DMASYNC_PREWRITE); 2283 2284 if (cr->cr_data != NULL) { 2285 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, 2286 cr->cr_data, cr->cr_length, 2287 ciss_request_map_helper, cr, 0); 2288 if (error != 0) 2289 return (error); 2290 } else { 2291 /* 2292 * Post the command to the adapter. 2293 */ 2294 ciss_enqueue_busy(cr); 2295 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2296 } 2297 2298 return(0); 2299} 2300 2301static void 2302ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2303{ 2304 struct ciss_command *cc; 2305 struct ciss_request *cr; 2306 struct ciss_softc *sc; 2307 int i; 2308 2309 debug_called(2); 2310 2311 cr = (struct ciss_request *)arg; 2312 sc = cr->cr_sc; 2313 cc = CISS_FIND_COMMAND(cr); 2314 2315 for (i = 0; i < nseg; i++) { 2316 cc->sg[i].address = segs[i].ds_addr; 2317 cc->sg[i].length = segs[i].ds_len; 2318 cc->sg[i].extension = 0; 2319 } 2320 /* we leave the s/g table entirely within the command */ 2321 cc->header.sg_in_list = nseg; 2322 cc->header.sg_total = nseg; 2323 2324 if (cr->cr_flags & CISS_REQ_DATAIN) 2325 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD); 2326 if (cr->cr_flags & CISS_REQ_DATAOUT) 2327 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE); 2328 2329 /* 2330 * Post the command to the adapter. 2331 */ 2332 ciss_enqueue_busy(cr); 2333 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2334} 2335 2336/************************************************************************ 2337 * Unmap a request from bus-visible space. 2338 */ 2339static void 2340ciss_unmap_request(struct ciss_request *cr) 2341{ 2342 struct ciss_softc *sc; 2343 2344 debug_called(2); 2345 2346 sc = cr->cr_sc; 2347 2348 /* check that unmapping is necessary */ 2349 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0) 2350 return; 2351 2352 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2353 BUS_DMASYNC_POSTWRITE); 2354 2355 if (cr->cr_data == NULL) 2356 goto out; 2357 2358 if (cr->cr_flags & CISS_REQ_DATAIN) 2359 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD); 2360 if (cr->cr_flags & CISS_REQ_DATAOUT) 2361 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE); 2362 2363 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap); 2364out: 2365 cr->cr_flags &= ~CISS_REQ_MAPPED; 2366} 2367 2368/************************************************************************ 2369 * Attach the driver to CAM. 2370 * 2371 * We put all the logical drives on a single SCSI bus. 2372 */ 2373static int 2374ciss_cam_init(struct ciss_softc *sc) 2375{ 2376 int i, maxbus; 2377 2378 debug_called(1); 2379 2380 /* 2381 * Allocate a devq. We can reuse this for the masked physical 2382 * devices if we decide to export these as well. 2383 */ 2384 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) { 2385 ciss_printf(sc, "can't allocate CAM SIM queue\n"); 2386 return(ENOMEM); 2387 } 2388 2389 /* 2390 * Create a SIM. 2391 * 2392 * This naturally wastes a bit of memory. The alternative is to allocate 2393 * and register each bus as it is found, and then track them on a linked 2394 * list. Unfortunately, the driver has a few places where it needs to 2395 * look up the SIM based solely on bus number, and it's unclear whether 2396 * a list traversal would work for these situations. 2397 */ 2398 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus + 2399 CISS_PHYSICAL_BASE); 2400 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*), 2401 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 2402 if (sc->ciss_cam_sim == NULL) { 2403 ciss_printf(sc, "can't allocate memory for controller SIM\n"); 2404 return(ENOMEM); 2405 } 2406 2407 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 2408 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2409 "ciss", sc, 2410 device_get_unit(sc->ciss_dev), 2411 sc->ciss_max_requests - 2, 2412 1, 2413 sc->ciss_cam_devq)) == NULL) { 2414 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2415 return(ENOMEM); 2416 } 2417 2418 /* 2419 * Register bus with this SIM. 2420 */ 2421 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) { 2422 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) { 2423 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2424 return (ENXIO); 2425 } 2426 } 2427 } 2428 2429 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2430 CISS_PHYSICAL_BASE; i++) { 2431 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2432 "ciss", sc, 2433 device_get_unit(sc->ciss_dev), 2434 sc->ciss_max_requests - 2, 2435 1, 2436 sc->ciss_cam_devq)) == NULL) { 2437 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2438 return (ENOMEM); 2439 } 2440 2441 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) { 2442 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2443 return (ENXIO); 2444 } 2445 } 2446 2447 /* 2448 * Initiate a rescan of the bus. 2449 */ 2450 ciss_cam_rescan_all(sc); 2451 2452 return(0); 2453} 2454 2455/************************************************************************ 2456 * Initiate a rescan of the 'logical devices' SIM 2457 */ 2458static void 2459ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target) 2460{ 2461 struct cam_path *path; 2462 union ccb *ccb; 2463 2464 debug_called(1); 2465 2466 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 2467 ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); 2468 return; 2469 } 2470 2471 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]), 2472 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 2473 ciss_printf(sc, "rescan failed (can't create path)\n"); 2474 free(ccb, M_TEMP); 2475 return; 2476 } 2477 2478 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/); 2479 ccb->ccb_h.func_code = XPT_SCAN_BUS; 2480 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback; 2481 ccb->crcn.flags = CAM_FLAG_NONE; 2482 xpt_action(ccb); 2483 2484 /* scan is now in progress */ 2485} 2486 2487static void 2488ciss_cam_rescan_all(struct ciss_softc *sc) 2489{ 2490 int i; 2491 2492 /* Rescan the logical buses */ 2493 for (i = 0; i < sc->ciss_max_logical_bus; i++) 2494 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2495 /* Rescan the physical buses */ 2496 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2497 CISS_PHYSICAL_BASE; i++) 2498 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2499} 2500 2501static void 2502ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2503{ 2504 xpt_free_path(ccb->ccb_h.path); 2505 free(ccb, M_TEMP); 2506} 2507 2508/************************************************************************ 2509 * Handle requests coming from CAM 2510 */ 2511static void 2512ciss_cam_action(struct cam_sim *sim, union ccb *ccb) 2513{ 2514 struct ciss_softc *sc; 2515 struct ccb_scsiio *csio; 2516 int bus, target; 2517 int physical; 2518 2519 sc = cam_sim_softc(sim); 2520 bus = cam_sim_bus(sim); 2521 csio = (struct ccb_scsiio *)&ccb->csio; 2522 target = csio->ccb_h.target_id; 2523 physical = CISS_IS_PHYSICAL(bus); 2524 2525 switch (ccb->ccb_h.func_code) { 2526 2527 /* perform SCSI I/O */ 2528 case XPT_SCSI_IO: 2529 if (!ciss_cam_action_io(sim, csio)) 2530 return; 2531 break; 2532 2533 /* perform geometry calculations */ 2534 case XPT_CALC_GEOMETRY: 2535 { 2536 struct ccb_calc_geometry *ccg = &ccb->ccg; 2537 struct ciss_ldrive *ld; 2538 2539 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2540 2541 ld = NULL; 2542 if (!physical) 2543 ld = &sc->ciss_logical[bus][target]; 2544 2545 /* 2546 * Use the cached geometry settings unless the fault tolerance 2547 * is invalid. 2548 */ 2549 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) { 2550 u_int32_t secs_per_cylinder; 2551 2552 ccg->heads = 255; 2553 ccg->secs_per_track = 32; 2554 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2555 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2556 } else { 2557 ccg->heads = ld->cl_geometry.heads; 2558 ccg->secs_per_track = ld->cl_geometry.sectors; 2559 ccg->cylinders = ntohs(ld->cl_geometry.cylinders); 2560 } 2561 ccb->ccb_h.status = CAM_REQ_CMP; 2562 break; 2563 } 2564 2565 /* handle path attribute inquiry */ 2566 case XPT_PATH_INQ: 2567 { 2568 struct ccb_pathinq *cpi = &ccb->cpi; 2569 2570 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2571 2572 cpi->version_num = 1; 2573 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */ 2574 cpi->target_sprt = 0; 2575 cpi->hba_misc = 0; 2576 cpi->max_target = CISS_MAX_LOGICAL; 2577 cpi->max_lun = 0; /* 'logical drive' channel only */ 2578 cpi->initiator_id = CISS_MAX_LOGICAL; 2579 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2580 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN); 2581 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2582 cpi->unit_number = cam_sim_unit(sim); 2583 cpi->bus_id = cam_sim_bus(sim); 2584 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2585 ccb->ccb_h.status = CAM_REQ_CMP; 2586 break; 2587 } 2588 2589 case XPT_GET_TRAN_SETTINGS: 2590 { 2591 struct ccb_trans_settings *cts = &ccb->cts; 2592 int bus, target; 2593 2594 bus = cam_sim_bus(sim); 2595 target = cts->ccb_h.target_id; 2596 2597 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2598 cts->valid = 0; 2599 2600 /* disconnect always OK */ 2601 cts->flags |= CCB_TRANS_DISC_ENB; 2602 cts->valid |= CCB_TRANS_DISC_VALID; 2603 2604 cts->ccb_h.status = CAM_REQ_CMP; 2605 break; 2606 } 2607 2608 default: /* we can't do this */ 2609 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2610 ccb->ccb_h.status = CAM_REQ_INVALID; 2611 break; 2612 } 2613 2614 xpt_done(ccb); 2615} 2616 2617/************************************************************************ 2618 * Handle a CAM SCSI I/O request. 2619 */ 2620static int 2621ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2622{ 2623 struct ciss_softc *sc; 2624 int bus, target; 2625 struct ciss_request *cr; 2626 struct ciss_command *cc; 2627 int error; 2628 2629 sc = cam_sim_softc(sim); 2630 bus = cam_sim_bus(sim); 2631 target = csio->ccb_h.target_id; 2632 2633 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2634 2635 /* firmware does not support commands > 10 bytes */ 2636 if (csio->cdb_len > 12/*CISS_CDB_BUFFER_SIZE*/) { 2637 debug(3, " command too large (%d > %d)", csio->cdb_len, CISS_CDB_BUFFER_SIZE); 2638 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2639 } 2640 2641 /* check that the CDB pointer is not to a physical address */ 2642 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2643 debug(3, " CDB pointer is to physical address"); 2644 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2645 } 2646 2647 /* if there is data transfer, it must be to/from a virtual address */ 2648 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2649 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2650 debug(3, " data pointer is to physical address"); 2651 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2652 } 2653 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2654 debug(3, " data has premature s/g setup"); 2655 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2656 } 2657 } 2658 2659 /* abandon aborted ccbs or those that have failed validation */ 2660 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2661 debug(3, "abandoning CCB due to abort/validation failure"); 2662 return(EINVAL); 2663 } 2664 2665 /* handle emulation of some SCSI commands ourself */ 2666 if (ciss_cam_emulate(sc, csio)) 2667 return(0); 2668 2669 /* 2670 * Get a request to manage this command. If we can't, return the 2671 * ccb, freeze the queue and flag so that we unfreeze it when a 2672 * request completes. 2673 */ 2674 if ((error = ciss_get_request(sc, &cr)) != 0) { 2675 xpt_freeze_simq(sim, 1); 2676 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2677 return(error); 2678 } 2679 2680 /* 2681 * Build the command. 2682 */ 2683 cc = CISS_FIND_COMMAND(cr); 2684 cr->cr_data = csio->data_ptr; 2685 cr->cr_length = csio->dxfer_len; 2686 cr->cr_complete = ciss_cam_complete; 2687 cr->cr_private = csio; 2688 2689 /* 2690 * Target the right logical volume. 2691 */ 2692 if (CISS_IS_PHYSICAL(bus)) 2693 cc->header.address = 2694 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address; 2695 else 2696 cc->header.address = 2697 sc->ciss_logical[bus][target].cl_address; 2698 cc->cdb.cdb_length = csio->cdb_len; 2699 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2700 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */ 2701 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2702 cr->cr_flags = CISS_REQ_DATAOUT; 2703 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; 2704 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 2705 cr->cr_flags = CISS_REQ_DATAIN; 2706 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2707 } else { 2708 cr->cr_flags = 0; 2709 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2710 } 2711 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1; 2712 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2713 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len); 2714 } else { 2715 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len); 2716 } 2717 2718 /* 2719 * Submit the request to the adapter. 2720 * 2721 * Note that this may fail if we're unable to map the request (and 2722 * if we ever learn a transport layer other than simple, may fail 2723 * if the adapter rejects the command). 2724 */ 2725 if ((error = ciss_start(cr)) != 0) { 2726 xpt_freeze_simq(sim, 1); 2727 if (error == EINPROGRESS) { 2728 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2729 error = 0; 2730 } else { 2731 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2732 ciss_release_request(cr); 2733 } 2734 return(error); 2735 } 2736 2737 return(0); 2738} 2739 2740/************************************************************************ 2741 * Emulate SCSI commands the adapter doesn't handle as we might like. 2742 */ 2743static int 2744ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio) 2745{ 2746 int bus, target; 2747 u_int8_t opcode; 2748 2749 target = csio->ccb_h.target_id; 2750 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 2751 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? 2752 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; 2753 2754 if (CISS_IS_PHYSICAL(bus)) { 2755 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) { 2756 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2757 xpt_done((union ccb *)csio); 2758 return(1); 2759 } else 2760 return(0); 2761 } 2762 2763 /* 2764 * Handle requests for volumes that don't exist or are not online. 2765 * A selection timeout is slightly better than an illegal request. 2766 * Other errors might be better. 2767 */ 2768 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) { 2769 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2770 xpt_done((union ccb *)csio); 2771 return(1); 2772 } 2773 2774 /* if we have to fake Synchronise Cache */ 2775 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) { 2776 /* 2777 * If this is a Synchronise Cache command, typically issued when 2778 * a device is closed, flush the adapter and complete now. 2779 */ 2780 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2781 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) { 2782 ciss_flush_adapter(sc); 2783 csio->ccb_h.status = CAM_REQ_CMP; 2784 xpt_done((union ccb *)csio); 2785 return(1); 2786 } 2787 } 2788 2789 return(0); 2790} 2791 2792/************************************************************************ 2793 * Check for possibly-completed commands. 2794 */ 2795static void 2796ciss_cam_poll(struct cam_sim *sim) 2797{ 2798 struct ciss_softc *sc = cam_sim_softc(sim); 2799 2800 debug_called(2); 2801 2802 ciss_done(sc); 2803} 2804 2805/************************************************************************ 2806 * Handle completion of a command - pass results back through the CCB 2807 */ 2808static void 2809ciss_cam_complete(struct ciss_request *cr) 2810{ 2811 struct ciss_softc *sc; 2812 struct ciss_command *cc; 2813 struct ciss_error_info *ce; 2814 struct ccb_scsiio *csio; 2815 int scsi_status; 2816 int command_status; 2817 2818 debug_called(2); 2819 2820 sc = cr->cr_sc; 2821 cc = CISS_FIND_COMMAND(cr); 2822 ce = (struct ciss_error_info *)&(cc->sg[0]); 2823 csio = (struct ccb_scsiio *)cr->cr_private; 2824 2825 /* 2826 * Extract status values from request. 2827 */ 2828 ciss_report_request(cr, &command_status, &scsi_status); 2829 csio->scsi_status = scsi_status; 2830 2831 /* 2832 * Handle specific SCSI status values. 2833 */ 2834 switch(scsi_status) { 2835 /* no status due to adapter error */ 2836 case -1: 2837 debug(0, "adapter error"); 2838 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2839 break; 2840 2841 /* no status due to command completed OK */ 2842 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */ 2843 debug(2, "SCSI_STATUS_OK"); 2844 csio->ccb_h.status = CAM_REQ_CMP; 2845 break; 2846 2847 /* check condition, sense data included */ 2848 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */ 2849 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n", 2850 ce->sense_length, ce->residual_count); 2851 bzero(&csio->sense_data, SSD_FULL_SIZE); 2852 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); 2853 csio->sense_len = ce->sense_length; 2854 csio->resid = ce->residual_count; 2855 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 2856#ifdef CISS_DEBUG 2857 { 2858 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0]; 2859 debug(0, "sense key %x", sns->flags & SSD_KEY); 2860 } 2861#endif 2862 break; 2863 2864 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */ 2865 debug(0, "SCSI_STATUS_BUSY"); 2866 csio->ccb_h.status = CAM_SCSI_BUSY; 2867 break; 2868 2869 default: 2870 debug(0, "unknown status 0x%x", csio->scsi_status); 2871 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2872 break; 2873 } 2874 2875 /* handle post-command fixup */ 2876 ciss_cam_complete_fixup(sc, csio); 2877 2878 /* tell CAM we're ready for more commands */ 2879 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2880 2881 xpt_done((union ccb *)csio); 2882 ciss_release_request(cr); 2883} 2884 2885/******************************************************************************** 2886 * Fix up the result of some commands here. 2887 */ 2888static void 2889ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio) 2890{ 2891 struct scsi_inquiry_data *inq; 2892 struct ciss_ldrive *cl; 2893 int bus, target; 2894 2895 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2896 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) { 2897 2898 inq = (struct scsi_inquiry_data *)csio->data_ptr; 2899 target = csio->ccb_h.target_id; 2900 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 2901 2902 /* 2903 * Don't let hard drives be seen by the DA driver. They will still be 2904 * attached by the PASS driver. 2905 */ 2906 if (CISS_IS_PHYSICAL(bus)) { 2907 if (SID_TYPE(inq) == T_DIRECT) 2908 inq->device = (inq->device & 0xe0) | T_NODEVICE; 2909 return; 2910 } 2911 2912 cl = &sc->ciss_logical[bus][target]; 2913 2914 padstr(inq->vendor, "COMPAQ", 8); 2915 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); 2916 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); 2917 } 2918} 2919 2920 2921/******************************************************************************** 2922 * Find a peripheral attached at (target) 2923 */ 2924static struct cam_periph * 2925ciss_find_periph(struct ciss_softc *sc, int bus, int target) 2926{ 2927 struct cam_periph *periph; 2928 struct cam_path *path; 2929 int status; 2930 2931 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]), 2932 target, 0); 2933 if (status == CAM_REQ_CMP) { 2934 periph = cam_periph_find(path, NULL); 2935 xpt_free_path(path); 2936 } else { 2937 periph = NULL; 2938 } 2939 return(periph); 2940} 2941 2942/******************************************************************************** 2943 * Name the device at (target) 2944 * 2945 * XXX is this strictly correct? 2946 */ 2947static int 2948ciss_name_device(struct ciss_softc *sc, int bus, int target) 2949{ 2950 struct cam_periph *periph; 2951 2952 if (CISS_IS_PHYSICAL(bus)) 2953 return (0); 2954 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) { 2955 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d", 2956 periph->periph_name, periph->unit_number); 2957 return(0); 2958 } 2959 sc->ciss_logical[bus][target].cl_name[0] = 0; 2960 return(ENOENT); 2961} 2962 2963/************************************************************************ 2964 * Periodic status monitoring. 2965 */ 2966static void 2967ciss_periodic(void *arg) 2968{ 2969 struct ciss_softc *sc; 2970 2971 debug_called(1); 2972 2973 sc = (struct ciss_softc *)arg; 2974 2975 /* 2976 * Check the adapter heartbeat. 2977 */ 2978 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) { 2979 sc->ciss_heart_attack++; 2980 debug(0, "adapter heart attack in progress 0x%x/%d", 2981 sc->ciss_heartbeat, sc->ciss_heart_attack); 2982 if (sc->ciss_heart_attack == 3) { 2983 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n"); 2984 /* XXX should reset adapter here */ 2985 } 2986 } else { 2987 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; 2988 sc->ciss_heart_attack = 0; 2989 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); 2990 } 2991 2992 /* 2993 * If the notify event request has died for some reason, or has 2994 * not started yet, restart it. 2995 */ 2996 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) { 2997 debug(0, "(re)starting Event Notify chain"); 2998 ciss_notify_event(sc); 2999 } 3000 3001 /* 3002 * Reschedule. 3003 */ 3004 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) 3005 sc->ciss_periodic = timeout(ciss_periodic, sc, CISS_HEARTBEAT_RATE * hz); 3006} 3007 3008/************************************************************************ 3009 * Request a notification response from the adapter. 3010 * 3011 * If (cr) is NULL, this is the first request of the adapter, so 3012 * reset the adapter's message pointer and start with the oldest 3013 * message available. 3014 */ 3015static void 3016ciss_notify_event(struct ciss_softc *sc) 3017{ 3018 struct ciss_request *cr; 3019 struct ciss_command *cc; 3020 struct ciss_notify_cdb *cnc; 3021 int error; 3022 3023 debug_called(1); 3024 3025 cr = sc->ciss_periodic_notify; 3026 3027 /* get a request if we don't already have one */ 3028 if (cr == NULL) { 3029 if ((error = ciss_get_request(sc, &cr)) != 0) { 3030 debug(0, "can't get notify event request"); 3031 goto out; 3032 } 3033 sc->ciss_periodic_notify = cr; 3034 cr->cr_complete = ciss_notify_complete; 3035 debug(1, "acquired request %d", cr->cr_tag); 3036 } 3037 3038 /* 3039 * Get a databuffer if we don't already have one, note that the 3040 * adapter command wants a larger buffer than the actual 3041 * structure. 3042 */ 3043 if (cr->cr_data == NULL) { 3044 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3045 debug(0, "can't get notify event request buffer"); 3046 error = ENOMEM; 3047 goto out; 3048 } 3049 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3050 } 3051 3052 /* re-setup the request's command (since we never release it) XXX overkill*/ 3053 ciss_preen_command(cr); 3054 3055 /* (re)build the notify event command */ 3056 cc = CISS_FIND_COMMAND(cr); 3057 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3058 cc->header.address.physical.bus = 0; 3059 cc->header.address.physical.target = 0; 3060 3061 cc->cdb.cdb_length = sizeof(*cnc); 3062 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3063 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3064 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3065 cc->cdb.timeout = 0; /* no timeout, we hope */ 3066 3067 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3068 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE); 3069 cnc->opcode = CISS_OPCODE_READ; 3070 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT; 3071 cnc->timeout = 0; /* no timeout, we hope */ 3072 cnc->synchronous = 0; 3073 cnc->ordered = 0; 3074 cnc->seek_to_oldest = 0; 3075 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0) 3076 cnc->new_only = 1; 3077 else 3078 cnc->new_only = 0; 3079 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3080 3081 /* submit the request */ 3082 error = ciss_start(cr); 3083 3084 out: 3085 if (error) { 3086 if (cr != NULL) { 3087 if (cr->cr_data != NULL) 3088 free(cr->cr_data, CISS_MALLOC_CLASS); 3089 ciss_release_request(cr); 3090 } 3091 sc->ciss_periodic_notify = NULL; 3092 debug(0, "can't submit notify event request"); 3093 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3094 } else { 3095 debug(1, "notify event submitted"); 3096 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK; 3097 } 3098} 3099 3100static void 3101ciss_notify_complete(struct ciss_request *cr) 3102{ 3103 struct ciss_command *cc; 3104 struct ciss_notify *cn; 3105 struct ciss_softc *sc; 3106 int scsi_status; 3107 int command_status; 3108 debug_called(1); 3109 3110 cc = CISS_FIND_COMMAND(cr); 3111 cn = (struct ciss_notify *)cr->cr_data; 3112 sc = cr->cr_sc; 3113 3114 /* 3115 * Report request results, decode status. 3116 */ 3117 ciss_report_request(cr, &command_status, &scsi_status); 3118 3119 /* 3120 * Abort the chain on a fatal error. 3121 * 3122 * XXX which of these are actually errors? 3123 */ 3124 if ((command_status != CISS_CMD_STATUS_SUCCESS) && 3125 (command_status != CISS_CMD_STATUS_TARGET_STATUS) && 3126 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */ 3127 ciss_printf(sc, "fatal error in Notify Event request (%s)\n", 3128 ciss_name_command_status(command_status)); 3129 ciss_release_request(cr); 3130 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3131 return; 3132 } 3133 3134 /* 3135 * If the adapter gave us a text message, print it. 3136 */ 3137 if (cn->message[0] != 0) 3138 ciss_printf(sc, "*** %.80s\n", cn->message); 3139 3140 debug(0, "notify event class %d subclass %d detail %d", 3141 cn->class, cn->subclass, cn->detail); 3142 3143 /* 3144 * If the response indicates that the notifier has been aborted, 3145 * release the notifier command. 3146 */ 3147 if ((cn->class == CISS_NOTIFY_NOTIFIER) && 3148 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) && 3149 (cn->detail == 1)) { 3150 debug(0, "notifier exiting"); 3151 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3152 ciss_release_request(cr); 3153 sc->ciss_periodic_notify = NULL; 3154 wakeup(&sc->ciss_periodic_notify); 3155 } else { 3156 /* Handle notify events in a kernel thread */ 3157 ciss_enqueue_notify(cr); 3158 sc->ciss_periodic_notify = NULL; 3159 wakeup(&sc->ciss_periodic_notify); 3160 wakeup(&sc->ciss_notify); 3161 } 3162 /* 3163 * Send a new notify event command, if we're not aborting. 3164 */ 3165 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) { 3166 ciss_notify_event(sc); 3167 } 3168} 3169 3170/************************************************************************ 3171 * Abort the Notify Event chain. 3172 * 3173 * Note that we can't just abort the command in progress; we have to 3174 * explicitly issue an Abort Notify Event command in order for the 3175 * adapter to clean up correctly. 3176 * 3177 * If we are called with CISS_FLAG_ABORTING set in the adapter softc, 3178 * the chain will not restart itself. 3179 */ 3180static int 3181ciss_notify_abort(struct ciss_softc *sc) 3182{ 3183 struct ciss_request *cr; 3184 struct ciss_command *cc; 3185 struct ciss_notify_cdb *cnc; 3186 int error, s, command_status, scsi_status; 3187 3188 debug_called(1); 3189 3190 cr = NULL; 3191 error = 0; 3192 3193 /* verify that there's an outstanding command */ 3194 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3195 goto out; 3196 3197 /* get a command to issue the abort with */ 3198 if ((error = ciss_get_request(sc, &cr))) 3199 goto out; 3200 3201 /* get a buffer for the result */ 3202 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3203 debug(0, "can't get notify event request buffer"); 3204 error = ENOMEM; 3205 goto out; 3206 } 3207 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3208 3209 /* build the CDB */ 3210 cc = CISS_FIND_COMMAND(cr); 3211 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3212 cc->header.address.physical.bus = 0; 3213 cc->header.address.physical.target = 0; 3214 cc->cdb.cdb_length = sizeof(*cnc); 3215 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3216 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3217 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3218 cc->cdb.timeout = 0; /* no timeout, we hope */ 3219 3220 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3221 bzero(cnc, sizeof(*cnc)); 3222 cnc->opcode = CISS_OPCODE_WRITE; 3223 cnc->command = CISS_COMMAND_ABORT_NOTIFY; 3224 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3225 3226 ciss_print_request(cr); 3227 3228 /* 3229 * Submit the request and wait for it to complete. 3230 */ 3231 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3232 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error); 3233 goto out; 3234 } 3235 3236 /* 3237 * Check response. 3238 */ 3239 ciss_report_request(cr, &command_status, &scsi_status); 3240 switch(command_status) { 3241 case CISS_CMD_STATUS_SUCCESS: 3242 break; 3243 case CISS_CMD_STATUS_INVALID_COMMAND: 3244 /* 3245 * Some older adapters don't support the CISS version of this 3246 * command. Fall back to using the BMIC version. 3247 */ 3248 error = ciss_notify_abort_bmic(sc); 3249 if (error != 0) 3250 goto out; 3251 break; 3252 3253 case CISS_CMD_STATUS_TARGET_STATUS: 3254 /* 3255 * This can happen if the adapter thinks there wasn't an outstanding 3256 * Notify Event command but we did. We clean up here. 3257 */ 3258 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) { 3259 if (sc->ciss_periodic_notify != NULL) 3260 ciss_release_request(sc->ciss_periodic_notify); 3261 error = 0; 3262 goto out; 3263 } 3264 /* FALLTHROUGH */ 3265 3266 default: 3267 ciss_printf(sc, "Abort Notify Event command failed (%s)\n", 3268 ciss_name_command_status(command_status)); 3269 error = EIO; 3270 goto out; 3271 } 3272 3273 /* 3274 * Sleep waiting for the notifier command to complete. Note 3275 * that if it doesn't, we may end up in a bad situation, since 3276 * the adapter may deliver it later. Also note that the adapter 3277 * requires the Notify Event command to be cancelled in order to 3278 * maintain internal bookkeeping. 3279 */ 3280 s = splcam(); 3281 while (sc->ciss_periodic_notify != NULL) { 3282 error = tsleep(&sc->ciss_periodic_notify, 0, "cissNEA", hz * 5); 3283 if (error == EWOULDBLOCK) { 3284 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); 3285 break; 3286 } 3287 } 3288 splx(s); 3289 3290 out: 3291 /* release the cancel request */ 3292 if (cr != NULL) { 3293 if (cr->cr_data != NULL) 3294 free(cr->cr_data, CISS_MALLOC_CLASS); 3295 ciss_release_request(cr); 3296 } 3297 if (error == 0) 3298 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3299 return(error); 3300} 3301 3302/************************************************************************ 3303 * Abort the Notify Event chain using a BMIC command. 3304 */ 3305static int 3306ciss_notify_abort_bmic(struct ciss_softc *sc) 3307{ 3308 struct ciss_request *cr; 3309 int error, command_status; 3310 3311 debug_called(1); 3312 3313 cr = NULL; 3314 error = 0; 3315 3316 /* verify that there's an outstanding command */ 3317 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3318 goto out; 3319 3320 /* 3321 * Build a BMIC command to cancel the Notify on Event command. 3322 * 3323 * Note that we are sending a CISS opcode here. Odd. 3324 */ 3325 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY, 3326 NULL, 0)) != 0) 3327 goto out; 3328 3329 /* 3330 * Submit the request and wait for it to complete. 3331 */ 3332 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3333 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error); 3334 goto out; 3335 } 3336 3337 /* 3338 * Check response. 3339 */ 3340 ciss_report_request(cr, &command_status, NULL); 3341 switch(command_status) { 3342 case CISS_CMD_STATUS_SUCCESS: 3343 break; 3344 default: 3345 ciss_printf(sc, "error cancelling Notify on Event (%s)\n", 3346 ciss_name_command_status(command_status)); 3347 error = EIO; 3348 goto out; 3349 } 3350 3351out: 3352 if (cr != NULL) 3353 ciss_release_request(cr); 3354 return(error); 3355} 3356 3357/************************************************************************ 3358 * Handle rescanning all the logical volumes when a notify event 3359 * causes the drives to come online or offline. 3360 */ 3361static void 3362ciss_notify_rescan_logical(struct ciss_softc *sc) 3363{ 3364 struct ciss_lun_report *cll; 3365 struct ciss_ldrive *ld; 3366 int i, j, ndrives; 3367 3368 /* 3369 * We must rescan all logical volumes to get the right logical 3370 * drive address. 3371 */ 3372 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 3373 CISS_MAX_LOGICAL); 3374 if (cll == NULL) 3375 return; 3376 3377 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 3378 3379 /* 3380 * Delete any of the drives which were destroyed by the 3381 * firmware. 3382 */ 3383 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 3384 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 3385 ld = &sc->ciss_logical[i][j]; 3386 3387 if (ld->cl_update == 0) 3388 continue; 3389 3390 if (ld->cl_status != CISS_LD_ONLINE) { 3391 ciss_cam_rescan_target(sc, i, j); 3392 ld->cl_update = 0; 3393 if (ld->cl_ldrive) 3394 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 3395 if (ld->cl_lstatus) 3396 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 3397 3398 ld->cl_ldrive = NULL; 3399 ld->cl_lstatus = NULL; 3400 } 3401 } 3402 } 3403 3404 /* 3405 * Scan for new drives. 3406 */ 3407 for (i = 0; i < ndrives; i++) { 3408 int bus, target; 3409 3410 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 3411 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 3412 ld = &sc->ciss_logical[bus][target]; 3413 3414 if (ld->cl_update == 0) 3415 continue; 3416 3417 ld->cl_update = 0; 3418 ld->cl_address = cll->lun[i]; 3419 ld->cl_controller = &sc->ciss_controllers[bus]; 3420 if (ciss_identify_logical(sc, ld) == 0) { 3421 ciss_cam_rescan_target(sc, bus, target); 3422 } 3423 } 3424 free(cll, CISS_MALLOC_CLASS); 3425} 3426 3427/************************************************************************ 3428 * Handle a notify event relating to the status of a logical drive. 3429 * 3430 * XXX need to be able to defer some of these to properly handle 3431 * calling the "ID Physical drive" command, unless the 'extended' 3432 * drive IDs are always in BIG_MAP format. 3433 */ 3434static void 3435ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn) 3436{ 3437 struct ciss_ldrive *ld; 3438 int ostatus, bus, target; 3439 3440 debug_called(2); 3441 3442 bus = cn->device.physical.bus; 3443 target = cn->data.logical_status.logical_drive; 3444 ld = &sc->ciss_logical[bus][target]; 3445 3446 switch (cn->subclass) { 3447 case CISS_NOTIFY_LOGICAL_STATUS: 3448 switch (cn->detail) { 3449 case 0: 3450 ciss_name_device(sc, bus, target); 3451 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n", 3452 cn->data.logical_status.logical_drive, ld->cl_name, 3453 ciss_name_ldrive_status(cn->data.logical_status.previous_state), 3454 ciss_name_ldrive_status(cn->data.logical_status.new_state), 3455 cn->data.logical_status.spare_state, 3456 "\20\1configured\2rebuilding\3failed\4in use\5available\n"); 3457 3458 /* 3459 * Update our idea of the drive's status. 3460 */ 3461 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state); 3462 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3463 if (ld->cl_lstatus != NULL) 3464 ld->cl_lstatus->status = cn->data.logical_status.new_state; 3465 3466 /* 3467 * Have CAM rescan the drive if its status has changed. 3468 */ 3469 if (ostatus != ld->cl_status) { 3470 ld->cl_update = 1; 3471 ciss_notify_rescan_logical(sc); 3472 } 3473 3474 break; 3475 3476 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ 3477 ciss_name_device(sc, bus, target); 3478 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n", 3479 cn->data.logical_status.logical_drive, ld->cl_name); 3480 ciss_accept_media(sc, ld); 3481 3482 ld->cl_update = 1; 3483 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3484 ciss_notify_rescan_logical(sc); 3485 break; 3486 3487 case 2: 3488 case 3: 3489 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n", 3490 cn->data.rebuild_aborted.logical_drive, 3491 ld->cl_name, 3492 (cn->detail == 2) ? "read" : "write"); 3493 break; 3494 } 3495 break; 3496 3497 case CISS_NOTIFY_LOGICAL_ERROR: 3498 if (cn->detail == 0) { 3499 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n", 3500 cn->data.io_error.logical_drive, 3501 ld->cl_name, 3502 cn->data.io_error.failure_bus, 3503 cn->data.io_error.failure_drive); 3504 /* XXX should we take the drive down at this point, or will we be told? */ 3505 } 3506 break; 3507 3508 case CISS_NOTIFY_LOGICAL_SURFACE: 3509 if (cn->detail == 0) 3510 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n", 3511 cn->data.consistency_completed.logical_drive, 3512 ld->cl_name); 3513 break; 3514 } 3515} 3516 3517/************************************************************************ 3518 * Handle a notify event relating to the status of a physical drive. 3519 */ 3520static void 3521ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn) 3522{ 3523} 3524 3525/************************************************************************ 3526 * Handle a notify event relating to the status of a physical drive. 3527 */ 3528static void 3529ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn) 3530{ 3531 struct ciss_lun_report *cll; 3532 int bus, target; 3533 int s; 3534 3535 switch (cn->subclass) { 3536 case CISS_NOTIFY_HOTPLUG_PHYSICAL: 3537 case CISS_NOTIFY_HOTPLUG_NONDISK: 3538 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number); 3539 target = 3540 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number); 3541 3542 s = splcam(); 3543 if (cn->detail == 0) { 3544 /* 3545 * Mark the device offline so that it'll start producing selection 3546 * timeouts to the upper layer. 3547 */ 3548 sc->ciss_physical[bus][target].cp_online = 0; 3549 } else { 3550 /* 3551 * Rescan the physical lun list for new items 3552 */ 3553 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 3554 CISS_MAX_PHYSICAL); 3555 if (cll == NULL) { 3556 ciss_printf(sc, "Warning, cannot get physical lun list\n"); 3557 break; 3558 } 3559 ciss_filter_physical(sc, cll); 3560 } 3561 splx(s); 3562 break; 3563 3564 default: 3565 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass); 3566 return; 3567 } 3568} 3569 3570/************************************************************************ 3571 * Handle deferred processing of notify events. Notify events may need 3572 * sleep which is unsafe during an interrupt. 3573 */ 3574static void 3575ciss_notify_thread(void *arg) 3576{ 3577 struct ciss_softc *sc; 3578 struct ciss_request *cr; 3579 struct ciss_notify *cn; 3580 int s; 3581 3582#if __FreeBSD_version >= 500000 3583 mtx_lock(&Giant); 3584#endif 3585 sc = (struct ciss_softc *)arg; 3586 3587 s = splcam(); 3588 for (;;) { 3589 if (TAILQ_EMPTY(&sc->ciss_notify) != 0 && 3590 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) { 3591 tsleep(&sc->ciss_notify, PUSER, "idle", 0); 3592 } 3593 3594 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) 3595 break; 3596 3597 cr = ciss_dequeue_notify(sc); 3598 splx(s); 3599 3600 if (cr == NULL) 3601 panic("cr null"); 3602 cn = (struct ciss_notify *)cr->cr_data; 3603 3604 switch (cn->class) { 3605 case CISS_NOTIFY_HOTPLUG: 3606 ciss_notify_hotplug(sc, cn); 3607 break; 3608 case CISS_NOTIFY_LOGICAL: 3609 ciss_notify_logical(sc, cn); 3610 break; 3611 case CISS_NOTIFY_PHYSICAL: 3612 ciss_notify_physical(sc, cn); 3613 break; 3614 } 3615 3616 ciss_release_request(cr); 3617 3618 s = splcam(); 3619 } 3620 sc->ciss_notify_thread = NULL; 3621 wakeup(&sc->ciss_notify_thread); 3622 splx(s); 3623 3624#if __FreeBSD_version >= 500000 3625 mtx_unlock(&Giant); 3626#endif 3627 kthread_exit(0); 3628} 3629 3630/************************************************************************ 3631 * Start the notification kernel thread. 3632 */ 3633static void 3634ciss_spawn_notify_thread(struct ciss_softc *sc) 3635{ 3636 3637#if __FreeBSD_version > 500005 3638 if (kthread_create((void(*)(void *))ciss_notify_thread, sc, 3639 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d", 3640 device_get_unit(sc->ciss_dev))) 3641#else 3642 if (kthread_create((void(*)(void *))ciss_notify_thread, sc, 3643 &sc->ciss_notify_thread, "ciss_notify%d", 3644 device_get_unit(sc->ciss_dev))) 3645#endif 3646 panic("Could not create notify thread\n"); 3647} 3648 3649/************************************************************************ 3650 * Kill the notification kernel thread. 3651 */ 3652static void 3653ciss_kill_notify_thread(struct ciss_softc *sc) 3654{ 3655 3656 if (sc->ciss_notify_thread == NULL) 3657 return; 3658 3659 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT; 3660 wakeup(&sc->ciss_notify); 3661 tsleep(&sc->ciss_notify_thread, PUSER, "thtrm", 0); 3662} 3663 3664/************************************************************************ 3665 * Print a request. 3666 */ 3667static void 3668ciss_print_request(struct ciss_request *cr) 3669{ 3670 struct ciss_softc *sc; 3671 struct ciss_command *cc; 3672 int i; 3673 3674 sc = cr->cr_sc; 3675 cc = CISS_FIND_COMMAND(cr); 3676 3677 ciss_printf(sc, "REQUEST @ %p\n", cr); 3678 ciss_printf(sc, " data %p/%d tag %d flags %b\n", 3679 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags, 3680 "\20\1mapped\2sleep\3poll\4dataout\5datain\n"); 3681 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n", 3682 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag); 3683 switch(cc->header.address.mode.mode) { 3684 case CISS_HDR_ADDRESS_MODE_PERIPHERAL: 3685 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL: 3686 ciss_printf(sc, " physical bus %d target %d\n", 3687 cc->header.address.physical.bus, cc->header.address.physical.target); 3688 break; 3689 case CISS_HDR_ADDRESS_MODE_LOGICAL: 3690 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun); 3691 break; 3692 } 3693 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n", 3694 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" : 3695 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" : 3696 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??", 3697 cc->cdb.cdb_length, 3698 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" : 3699 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??", 3700 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" : 3701 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" : 3702 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" : 3703 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" : 3704 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??"); 3705 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " "); 3706 3707 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) { 3708 /* XXX print error info */ 3709 } else { 3710 /* since we don't use chained s/g, don't support it here */ 3711 for (i = 0; i < cc->header.sg_in_list; i++) { 3712 if ((i % 4) == 0) 3713 ciss_printf(sc, " "); 3714 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length); 3715 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1))) 3716 printf("\n"); 3717 } 3718 } 3719} 3720 3721/************************************************************************ 3722 * Print information about the status of a logical drive. 3723 */ 3724static void 3725ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld) 3726{ 3727 int bus, target, i; 3728 3729 if (ld->cl_lstatus == NULL) { 3730 printf("does not exist\n"); 3731 return; 3732 } 3733 3734 /* print drive status */ 3735 switch(ld->cl_lstatus->status) { 3736 case CISS_LSTATUS_OK: 3737 printf("online\n"); 3738 break; 3739 case CISS_LSTATUS_INTERIM_RECOVERY: 3740 printf("in interim recovery mode\n"); 3741 break; 3742 case CISS_LSTATUS_READY_RECOVERY: 3743 printf("ready to begin recovery\n"); 3744 break; 3745 case CISS_LSTATUS_RECOVERING: 3746 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3747 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3748 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n", 3749 bus, target, ld->cl_lstatus->blocks_to_recover); 3750 break; 3751 case CISS_LSTATUS_EXPANDING: 3752 printf("being expanded, %u blocks remaining\n", 3753 ld->cl_lstatus->blocks_to_recover); 3754 break; 3755 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3756 printf("queued for expansion\n"); 3757 break; 3758 case CISS_LSTATUS_FAILED: 3759 printf("queued for expansion\n"); 3760 break; 3761 case CISS_LSTATUS_WRONG_PDRIVE: 3762 printf("wrong physical drive inserted\n"); 3763 break; 3764 case CISS_LSTATUS_MISSING_PDRIVE: 3765 printf("missing a needed physical drive\n"); 3766 break; 3767 case CISS_LSTATUS_BECOMING_READY: 3768 printf("becoming ready\n"); 3769 break; 3770 } 3771 3772 /* print failed physical drives */ 3773 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) { 3774 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]); 3775 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]); 3776 if (bus == -1) 3777 continue; 3778 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target, 3779 ld->cl_lstatus->drive_failure_map[i]); 3780 } 3781} 3782 3783#ifdef CISS_DEBUG 3784/************************************************************************ 3785 * Print information about the controller/driver. 3786 */ 3787static void 3788ciss_print_adapter(struct ciss_softc *sc) 3789{ 3790 int i, j; 3791 3792 ciss_printf(sc, "ADAPTER:\n"); 3793 for (i = 0; i < CISSQ_COUNT; i++) { 3794 ciss_printf(sc, "%s %d/%d\n", 3795 i == 0 ? "free" : 3796 i == 1 ? "busy" : "complete", 3797 sc->ciss_qstat[i].q_length, 3798 sc->ciss_qstat[i].q_max); 3799 } 3800 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests); 3801 ciss_printf(sc, "flags %b\n", sc->ciss_flags, 3802 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n"); 3803 3804 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 3805 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 3806 ciss_printf(sc, "LOGICAL DRIVE %d: ", i); 3807 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]); 3808 } 3809 } 3810 3811 /* XXX Should physical drives be printed out here? */ 3812 3813 for (i = 1; i < sc->ciss_max_requests; i++) 3814 ciss_print_request(sc->ciss_request + i); 3815} 3816 3817/* DDB hook */ 3818static void 3819ciss_print0(void) 3820{ 3821 struct ciss_softc *sc; 3822 3823 sc = devclass_get_softc(devclass_find("ciss"), 0); 3824 if (sc == NULL) { 3825 printf("no ciss controllers\n"); 3826 } else { 3827 ciss_print_adapter(sc); 3828 } 3829} 3830#endif 3831 3832/************************************************************************ 3833 * Return a name for a logical drive status value. 3834 */ 3835static const char * 3836ciss_name_ldrive_status(int status) 3837{ 3838 switch (status) { 3839 case CISS_LSTATUS_OK: 3840 return("OK"); 3841 case CISS_LSTATUS_FAILED: 3842 return("failed"); 3843 case CISS_LSTATUS_NOT_CONFIGURED: 3844 return("not configured"); 3845 case CISS_LSTATUS_INTERIM_RECOVERY: 3846 return("interim recovery"); 3847 case CISS_LSTATUS_READY_RECOVERY: 3848 return("ready for recovery"); 3849 case CISS_LSTATUS_RECOVERING: 3850 return("recovering"); 3851 case CISS_LSTATUS_WRONG_PDRIVE: 3852 return("wrong physical drive inserted"); 3853 case CISS_LSTATUS_MISSING_PDRIVE: 3854 return("missing physical drive"); 3855 case CISS_LSTATUS_EXPANDING: 3856 return("expanding"); 3857 case CISS_LSTATUS_BECOMING_READY: 3858 return("becoming ready"); 3859 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3860 return("queued for expansion"); 3861 } 3862 return("unknown status"); 3863} 3864 3865/************************************************************************ 3866 * Return an online/offline/nonexistent value for a logical drive 3867 * status value. 3868 */ 3869static int 3870ciss_decode_ldrive_status(int status) 3871{ 3872 switch(status) { 3873 case CISS_LSTATUS_NOT_CONFIGURED: 3874 return(CISS_LD_NONEXISTENT); 3875 3876 case CISS_LSTATUS_OK: 3877 case CISS_LSTATUS_INTERIM_RECOVERY: 3878 case CISS_LSTATUS_READY_RECOVERY: 3879 case CISS_LSTATUS_RECOVERING: 3880 case CISS_LSTATUS_EXPANDING: 3881 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3882 return(CISS_LD_ONLINE); 3883 3884 case CISS_LSTATUS_FAILED: 3885 case CISS_LSTATUS_WRONG_PDRIVE: 3886 case CISS_LSTATUS_MISSING_PDRIVE: 3887 case CISS_LSTATUS_BECOMING_READY: 3888 default: 3889 return(CISS_LD_OFFLINE); 3890 } 3891} 3892 3893 3894/************************************************************************ 3895 * Return a name for a logical drive's organisation. 3896 */ 3897static const char * 3898ciss_name_ldrive_org(int org) 3899{ 3900 switch(org) { 3901 case CISS_LDRIVE_RAID0: 3902 return("RAID 0"); 3903 case CISS_LDRIVE_RAID1: 3904 return("RAID 1"); 3905 case CISS_LDRIVE_RAID4: 3906 return("RAID 4"); 3907 case CISS_LDRIVE_RAID5: 3908 return("RAID 5"); 3909 case CISS_LDRIVE_RAID51: 3910 return("RAID 5+1"); 3911 case CISS_LDRIVE_RAIDADG: 3912 return("RAID ADG"); 3913 } 3914 return("unkown"); 3915} 3916 3917/************************************************************************ 3918 * Return a name for a command status value. 3919 */ 3920static const char * 3921ciss_name_command_status(int status) 3922{ 3923 switch(status) { 3924 case CISS_CMD_STATUS_SUCCESS: 3925 return("success"); 3926 case CISS_CMD_STATUS_TARGET_STATUS: 3927 return("target status"); 3928 case CISS_CMD_STATUS_DATA_UNDERRUN: 3929 return("data underrun"); 3930 case CISS_CMD_STATUS_DATA_OVERRUN: 3931 return("data overrun"); 3932 case CISS_CMD_STATUS_INVALID_COMMAND: 3933 return("invalid command"); 3934 case CISS_CMD_STATUS_PROTOCOL_ERROR: 3935 return("protocol error"); 3936 case CISS_CMD_STATUS_HARDWARE_ERROR: 3937 return("hardware error"); 3938 case CISS_CMD_STATUS_CONNECTION_LOST: 3939 return("connection lost"); 3940 case CISS_CMD_STATUS_ABORTED: 3941 return("aborted"); 3942 case CISS_CMD_STATUS_ABORT_FAILED: 3943 return("abort failed"); 3944 case CISS_CMD_STATUS_UNSOLICITED_ABORT: 3945 return("unsolicited abort"); 3946 case CISS_CMD_STATUS_TIMEOUT: 3947 return("timeout"); 3948 case CISS_CMD_STATUS_UNABORTABLE: 3949 return("unabortable"); 3950 } 3951 return("unknown status"); 3952} 3953 3954/************************************************************************ 3955 * Handle an open on the control device. 3956 */ 3957static int 3958ciss_open(struct cdev *dev, int flags, int fmt, d_thread_t *p) 3959{ 3960 struct ciss_softc *sc; 3961 3962 debug_called(1); 3963 3964 sc = (struct ciss_softc *)dev->si_drv1; 3965 3966 /* we might want to veto if someone already has us open */ 3967 3968 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; 3969 return(0); 3970} 3971 3972/************************************************************************ 3973 * Handle the last close on the control device. 3974 */ 3975static int 3976ciss_close(struct cdev *dev, int flags, int fmt, d_thread_t *p) 3977{ 3978 struct ciss_softc *sc; 3979 3980 debug_called(1); 3981 3982 sc = (struct ciss_softc *)dev->si_drv1; 3983 3984 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; 3985 return (0); 3986} 3987 3988/******************************************************************************** 3989 * Handle adapter-specific control operations. 3990 * 3991 * Note that the API here is compatible with the Linux driver, in order to 3992 * simplify the porting of Compaq's userland tools. 3993 */ 3994static int 3995ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *p) 3996{ 3997 struct ciss_softc *sc; 3998 int error; 3999 4000 debug_called(1); 4001 4002 sc = (struct ciss_softc *)dev->si_drv1; 4003 error = 0; 4004 4005 switch(cmd) { 4006 case CCISS_GETPCIINFO: 4007 { 4008 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr; 4009 4010 pis->bus = pci_get_bus(sc->ciss_dev); 4011 pis->dev_fn = pci_get_slot(sc->ciss_dev); 4012 pis->board_id = pci_get_devid(sc->ciss_dev); 4013 4014 break; 4015 } 4016 4017 case CCISS_GETINTINFO: 4018 { 4019 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4020 4021 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay; 4022 cis->count = sc->ciss_cfg->interrupt_coalesce_count; 4023 4024 break; 4025 } 4026 4027 case CCISS_SETINTINFO: 4028 { 4029 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4030 4031 if ((cis->delay == 0) && (cis->count == 0)) { 4032 error = EINVAL; 4033 break; 4034 } 4035 4036 /* 4037 * XXX apparently this is only safe if the controller is idle, 4038 * we should suspend it before doing this. 4039 */ 4040 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay; 4041 sc->ciss_cfg->interrupt_coalesce_count = cis->count; 4042 4043 if (ciss_update_config(sc)) 4044 error = EIO; 4045 4046 /* XXX resume the controller here */ 4047 break; 4048 } 4049 4050 case CCISS_GETNODENAME: 4051 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr, 4052 sizeof(NodeName_type)); 4053 break; 4054 4055 case CCISS_SETNODENAME: 4056 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name, 4057 sizeof(NodeName_type)); 4058 if (ciss_update_config(sc)) 4059 error = EIO; 4060 break; 4061 4062 case CCISS_GETHEARTBEAT: 4063 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat; 4064 break; 4065 4066 case CCISS_GETBUSTYPES: 4067 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types; 4068 break; 4069 4070 case CCISS_GETFIRMVER: 4071 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr, 4072 sizeof(FirmwareVer_type)); 4073 break; 4074 4075 case CCISS_GETDRIVERVER: 4076 *(DriverVer_type *)addr = CISS_DRIVER_VERSION; 4077 break; 4078 4079 case CCISS_REVALIDVOLS: 4080 /* 4081 * This is a bit ugly; to do it "right" we really need 4082 * to find any disks that have changed, kick CAM off them, 4083 * then rescan only these disks. It'd be nice if they 4084 * a) told us which disk(s) they were going to play with, 4085 * and b) which ones had arrived. 8( 4086 */ 4087 break; 4088 4089 case CCISS_PASSTHRU: 4090 error = ciss_user_command(sc, (IOCTL_Command_struct *)addr); 4091 break; 4092 4093 default: 4094 debug(0, "unknown ioctl 0x%lx", cmd); 4095 4096 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO); 4097 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO); 4098 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO); 4099 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME); 4100 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME); 4101 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT); 4102 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES); 4103 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER); 4104 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER); 4105 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS); 4106 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU); 4107 4108 error = ENOIOCTL; 4109 break; 4110 } 4111 4112 return(error); 4113} 4114