1 /*- 2 * Copyright (c) 2001 Michael Smith 3 * Copyright (c) 2004 Paul Saab 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 /* 31 * Common Interface for SCSI-3 Support driver. 32 * 33 * CISS claims to provide a common interface between a generic SCSI 34 * transport and an intelligent host adapter. 35 * 36 * This driver supports CISS as defined in the document "CISS Command 37 * Interface for SCSI-3 Support Open Specification", Version 1.04, 38 * Valence Number 1, dated 20001127, produced by Compaq Computer 39 * Corporation. This document appears to be a hastily and somewhat 40 * arbitrarlily cut-down version of a larger (and probably even more 41 * chaotic and inconsistent) Compaq internal document. Various 42 * details were also gleaned from Compaq's "cciss" driver for Linux. 43 * 44 * We provide a shim layer between the CISS interface and CAM, 45 * offloading most of the queueing and being-a-disk chores onto CAM. 46 * Entry to the driver is via the PCI bus attachment (ciss_probe, 47 * ciss_attach, etc) and via the CAM interface (ciss_cam_action, 48 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI 49 * citizens and we have to fake up some responses to get reasonable 50 * behaviour out of them. In addition, the CISS command set is by no 51 * means adequate to support the functionality of a RAID controller, 52 * and thus the supported Compaq adapters utilise portions of the 53 * control protocol from earlier Compaq adapter families. 54 * 55 * Note that we only support the "simple" transport layer over PCI. 56 * This interface (ab)uses the I2O register set (specifically the post 57 * queues) to exchange commands with the adapter. Other interfaces 58 * are available, but we aren't supposed to know about them, and it is 59 * dubious whether they would provide major performance improvements 60 * except under extreme load. 61 * 62 * Currently the only supported CISS adapters are the Compaq Smart 63 * Array 5* series (5300, 5i, 532). Even with only three adapters, 64 * Compaq still manage to have interface variations. 65 * 66 * 67 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as 68 * well as Paul Saab at Yahoo! for their assistance in making this 69 * driver happen. 70 * 71 * More thanks must go to John Cagle at HP for the countless hours 72 * spent making this driver "work" with the MSA* series storage 73 * enclosures. Without his help (and nagging), this driver could not 74 * be used with these enclosures. 75 */ 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/malloc.h> 80 #include <sys/kernel.h> 81 #include <sys/bus.h> 82 #include <sys/conf.h> 83 #include <sys/stat.h> 84 #include <sys/kthread.h> 85 #include <sys/queue.h> 86 #include <sys/sysctl.h> 87 88 #include <cam/cam.h> 89 #include <cam/cam_ccb.h> 90 #include <cam/cam_periph.h> 91 #include <cam/cam_sim.h> 92 #include <cam/cam_xpt_sim.h> 93 #include <cam/scsi/scsi_all.h> 94 #include <cam/scsi/scsi_message.h> 95 96 #include <machine/clock.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> 108 109 MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers"); 110 111 /* pci interface */ 112 static int ciss_lookup(device_t dev); 113 static int ciss_probe(device_t dev); 114 static int ciss_attach(device_t dev); 115 static int ciss_detach(device_t dev); 116 static int ciss_shutdown(device_t dev); 117 118 /* (de)initialisation functions, control wrappers */ 119 static int ciss_init_pci(struct ciss_softc *sc); 120 static int ciss_wait_adapter(struct ciss_softc *sc); 121 static int ciss_flush_adapter(struct ciss_softc *sc); 122 static int ciss_init_requests(struct ciss_softc *sc); 123 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, 124 int nseg, int error); 125 static int ciss_identify_adapter(struct ciss_softc *sc); 126 static int ciss_init_logical(struct ciss_softc *sc); 127 static int ciss_init_physical(struct ciss_softc *sc); 128 static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll); 129 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld); 130 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld); 131 static int ciss_update_config(struct ciss_softc *sc); 132 static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld); 133 static void ciss_init_sysctl(struct ciss_softc *sc); 134 static void ciss_soft_reset(struct ciss_softc *sc); 135 static void ciss_free(struct ciss_softc *sc); 136 static void ciss_spawn_notify_thread(struct ciss_softc *sc); 137 static void ciss_kill_notify_thread(struct ciss_softc *sc); 138 139 /* request submission/completion */ 140 static int ciss_start(struct ciss_request *cr); 141 static void ciss_done(struct ciss_softc *sc); 142 static void ciss_intr(void *arg); 143 static void ciss_complete(struct ciss_softc *sc); 144 static int ciss_report_request(struct ciss_request *cr, int *command_status, 145 int *scsi_status); 146 static int ciss_synch_request(struct ciss_request *cr, int timeout); 147 static int ciss_poll_request(struct ciss_request *cr, int timeout); 148 static int ciss_wait_request(struct ciss_request *cr, int timeout); 149 #if 0 150 static int ciss_abort_request(struct ciss_request *cr); 151 #endif 152 153 /* request queueing */ 154 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp); 155 static void ciss_preen_command(struct ciss_request *cr); 156 static void ciss_release_request(struct ciss_request *cr); 157 158 /* request helpers */ 159 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 160 int opcode, void **bufp, size_t bufsize); 161 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc); 162 163 /* DMA map/unmap */ 164 static int ciss_map_request(struct ciss_request *cr); 165 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, 166 int nseg, int error); 167 static void ciss_unmap_request(struct ciss_request *cr); 168 169 /* CAM interface */ 170 static int ciss_cam_init(struct ciss_softc *sc); 171 static void ciss_cam_rescan_target(struct ciss_softc *sc, 172 int bus, int target); 173 static void ciss_cam_rescan_all(struct ciss_softc *sc); 174 static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb); 175 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb); 176 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio); 177 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio); 178 static void ciss_cam_poll(struct cam_sim *sim); 179 static void ciss_cam_complete(struct ciss_request *cr); 180 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio); 181 static struct cam_periph *ciss_find_periph(struct ciss_softc *sc, 182 int bus, int target); 183 static int ciss_name_device(struct ciss_softc *sc, int bus, int target); 184 185 /* periodic status monitoring */ 186 static void ciss_periodic(void *arg); 187 static void ciss_notify_event(struct ciss_softc *sc); 188 static void ciss_notify_complete(struct ciss_request *cr); 189 static int ciss_notify_abort(struct ciss_softc *sc); 190 static int ciss_notify_abort_bmic(struct ciss_softc *sc); 191 static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn); 192 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn); 193 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn); 194 195 /* debugging output */ 196 static void ciss_print_request(struct ciss_request *cr); 197 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld); 198 static const char *ciss_name_ldrive_status(int status); 199 static int ciss_decode_ldrive_status(int status); 200 static const char *ciss_name_ldrive_org(int org); 201 static const char *ciss_name_command_status(int status); 202 203 /* 204 * PCI bus interface. 205 */ 206 static device_method_t ciss_methods[] = { 207 /* Device interface */ 208 DEVMETHOD(device_probe, ciss_probe), 209 DEVMETHOD(device_attach, ciss_attach), 210 DEVMETHOD(device_detach, ciss_detach), 211 DEVMETHOD(device_shutdown, ciss_shutdown), 212 { 0, 0 } 213 }; 214 215 static driver_t ciss_pci_driver = { 216 "ciss", 217 ciss_methods, 218 sizeof(struct ciss_softc) 219 }; 220 221 static devclass_t ciss_devclass; 222 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0); 223 224 /* 225 * Control device interface. 226 */ 227 static d_open_t ciss_open; 228 static d_close_t ciss_close; 229 static d_ioctl_t ciss_ioctl; 230 231 static struct cdevsw ciss_cdevsw = { 232 .d_version = D_VERSION, 233 .d_flags = D_NEEDGIANT, 234 .d_open = ciss_open, 235 .d_close = ciss_close, 236 .d_ioctl = ciss_ioctl, 237 .d_name = "ciss", 238 }; 239 240 /* 241 * This tunable can be set at boot time and controls whether physical devices 242 * that are marked hidden by the firmware should be exposed anyways. 243 */ 244 static unsigned int ciss_expose_hidden_physical = 0; 245 TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical); 246 247 /************************************************************************ 248 * CISS adapters amazingly don't have a defined programming interface 249 * value. (One could say some very despairing things about PCI and 250 * people just not getting the general idea.) So we are forced to 251 * stick with matching against subvendor/subdevice, and thus have to 252 * be updated for every new CISS adapter that appears. 253 */ 254 #define CISS_BOARD_SA5 (1<<0) 255 #define CISS_BOARD_SA5B (1<<1) 256 257 static struct 258 { 259 u_int16_t subvendor; 260 u_int16_t subdevice; 261 int flags; 262 char *desc; 263 } ciss_vendor_data[] = { 264 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" }, 265 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" }, 266 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" }, 267 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" }, 268 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" }, 269 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" }, 270 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" }, 271 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" }, 272 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" }, 273 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" }, 274 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" }, 275 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" }, 276 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" }, 277 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" }, 278 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array E400" }, 279 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" }, 280 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" }, 281 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array" }, 282 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array" }, 283 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" }, 284 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array" }, 285 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" }, 286 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" }, 287 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" }, 288 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" }, 289 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" }, 290 { 0, 0, 0, NULL } 291 }; 292 293 /************************************************************************ 294 * Find a match for the device in our list of known adapters. 295 */ 296 static int 297 ciss_lookup(device_t dev) 298 { 299 int i; 300 301 for (i = 0; ciss_vendor_data[i].desc != NULL; i++) 302 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) && 303 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) { 304 return(i); 305 } 306 return(-1); 307 } 308 309 /************************************************************************ 310 * Match a known CISS adapter. 311 */ 312 static int 313 ciss_probe(device_t dev) 314 { 315 int i; 316 317 i = ciss_lookup(dev); 318 if (i != -1) { 319 device_set_desc(dev, ciss_vendor_data[i].desc); 320 return(BUS_PROBE_DEFAULT); 321 } 322 return(ENOENT); 323 } 324 325 /************************************************************************ 326 * Attach the driver to this adapter. 327 */ 328 static int 329 ciss_attach(device_t dev) 330 { 331 struct ciss_softc *sc; 332 int i, error; 333 334 debug_called(1); 335 336 #ifdef CISS_DEBUG 337 /* print structure/union sizes */ 338 debug_struct(ciss_command); 339 debug_struct(ciss_header); 340 debug_union(ciss_device_address); 341 debug_struct(ciss_cdb); 342 debug_struct(ciss_report_cdb); 343 debug_struct(ciss_notify_cdb); 344 debug_struct(ciss_notify); 345 debug_struct(ciss_message_cdb); 346 debug_struct(ciss_error_info_pointer); 347 debug_struct(ciss_error_info); 348 debug_struct(ciss_sg_entry); 349 debug_struct(ciss_config_table); 350 debug_struct(ciss_bmic_cdb); 351 debug_struct(ciss_bmic_id_ldrive); 352 debug_struct(ciss_bmic_id_lstatus); 353 debug_struct(ciss_bmic_id_table); 354 debug_struct(ciss_bmic_id_pdrive); 355 debug_struct(ciss_bmic_blink_pdrive); 356 debug_struct(ciss_bmic_flush_cache); 357 debug_const(CISS_MAX_REQUESTS); 358 debug_const(CISS_MAX_LOGICAL); 359 debug_const(CISS_INTERRUPT_COALESCE_DELAY); 360 debug_const(CISS_INTERRUPT_COALESCE_COUNT); 361 debug_const(CISS_COMMAND_ALLOC_SIZE); 362 debug_const(CISS_COMMAND_SG_LENGTH); 363 364 debug_type(cciss_pci_info_struct); 365 debug_type(cciss_coalint_struct); 366 debug_type(cciss_coalint_struct); 367 debug_type(NodeName_type); 368 debug_type(NodeName_type); 369 debug_type(Heartbeat_type); 370 debug_type(BusTypes_type); 371 debug_type(FirmwareVer_type); 372 debug_type(DriverVer_type); 373 debug_type(IOCTL_Command_struct); 374 #endif 375 376 sc = device_get_softc(dev); 377 sc->ciss_dev = dev; 378 379 /* 380 * Work out adapter type. 381 */ 382 i = ciss_lookup(dev); 383 if (i < 0) { 384 ciss_printf(sc, "unknown adapter type\n"); 385 error = ENXIO; 386 goto out; 387 } 388 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) { 389 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5; 390 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) { 391 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B; 392 } else { 393 /* really an error on our part */ 394 ciss_printf(sc, "unable to determine hardware type\n"); 395 error = ENXIO; 396 goto out; 397 } 398 399 /* 400 * Do PCI-specific init. 401 */ 402 if ((error = ciss_init_pci(sc)) != 0) 403 goto out; 404 405 /* 406 * Initialise driver queues. 407 */ 408 ciss_initq_free(sc); 409 ciss_initq_busy(sc); 410 ciss_initq_complete(sc); 411 ciss_initq_notify(sc); 412 413 /* 414 * Initalize device sysctls. 415 */ 416 ciss_init_sysctl(sc); 417 418 /* 419 * Initialise command/request pool. 420 */ 421 if ((error = ciss_init_requests(sc)) != 0) 422 goto out; 423 424 /* 425 * Get adapter information. 426 */ 427 if ((error = ciss_identify_adapter(sc)) != 0) 428 goto out; 429 430 /* 431 * Find all the physical devices. 432 */ 433 if ((error = ciss_init_physical(sc)) != 0) 434 goto out; 435 436 /* 437 * Build our private table of logical devices. 438 */ 439 if ((error = ciss_init_logical(sc)) != 0) 440 goto out; 441 442 /* 443 * Enable interrupts so that the CAM scan can complete. 444 */ 445 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc); 446 447 /* 448 * Initialise the CAM interface. 449 */ 450 if ((error = ciss_cam_init(sc)) != 0) 451 goto out; 452 453 /* 454 * Start the heartbeat routine and event chain. 455 */ 456 ciss_periodic(sc); 457 458 /* 459 * Create the control device. 460 */ 461 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev), 462 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 463 "ciss%d", device_get_unit(sc->ciss_dev)); 464 sc->ciss_dev_t->si_drv1 = sc; 465 466 /* 467 * The adapter is running; synchronous commands can now sleep 468 * waiting for an interrupt to signal completion. 469 */ 470 sc->ciss_flags |= CISS_FLAG_RUNNING; 471 472 ciss_spawn_notify_thread(sc); 473 474 error = 0; 475 out: 476 if (error != 0) 477 ciss_free(sc); 478 return(error); 479 } 480 481 /************************************************************************ 482 * Detach the driver from this adapter. 483 */ 484 static int 485 ciss_detach(device_t dev) 486 { 487 struct ciss_softc *sc = device_get_softc(dev); 488 489 debug_called(1); 490 491 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) 492 return (EBUSY); 493 494 /* flush adapter cache */ 495 ciss_flush_adapter(sc); 496 497 /* release all resources */ 498 ciss_free(sc); 499 500 return(0); 501 } 502 503 /************************************************************************ 504 * Prepare adapter for system shutdown. 505 */ 506 static int 507 ciss_shutdown(device_t dev) 508 { 509 struct ciss_softc *sc = device_get_softc(dev); 510 511 debug_called(1); 512 513 /* flush adapter cache */ 514 ciss_flush_adapter(sc); 515 516 if (sc->ciss_soft_reset) 517 ciss_soft_reset(sc); 518 519 return(0); 520 } 521 522 static void 523 ciss_init_sysctl(struct ciss_softc *sc) 524 { 525 526 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev), 527 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)), 528 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, ""); 529 } 530 531 /************************************************************************ 532 * Perform PCI-specific attachment actions. 533 */ 534 static int 535 ciss_init_pci(struct ciss_softc *sc) 536 { 537 uintptr_t cbase, csize, cofs; 538 int error; 539 540 debug_called(1); 541 542 /* 543 * Allocate register window first (we need this to find the config 544 * struct). 545 */ 546 error = ENXIO; 547 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS; 548 if ((sc->ciss_regs_resource = 549 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 550 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) { 551 ciss_printf(sc, "can't allocate register window\n"); 552 return(ENXIO); 553 } 554 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource); 555 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource); 556 557 /* 558 * Find the BAR holding the config structure. If it's not the one 559 * we already mapped for registers, map it too. 560 */ 561 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff; 562 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) { 563 if ((sc->ciss_cfg_resource = 564 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY, 565 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) { 566 ciss_printf(sc, "can't allocate config window\n"); 567 return(ENXIO); 568 } 569 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource); 570 csize = rman_get_end(sc->ciss_cfg_resource) - 571 rman_get_start(sc->ciss_cfg_resource) + 1; 572 } else { 573 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource); 574 csize = rman_get_end(sc->ciss_regs_resource) - 575 rman_get_start(sc->ciss_regs_resource) + 1; 576 } 577 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF); 578 579 /* 580 * Use the base/size/offset values we just calculated to 581 * sanity-check the config structure. If it's OK, point to it. 582 */ 583 if ((cofs + sizeof(struct ciss_config_table)) > csize) { 584 ciss_printf(sc, "config table outside window\n"); 585 return(ENXIO); 586 } 587 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs); 588 debug(1, "config struct at %p", sc->ciss_cfg); 589 590 /* 591 * Validate the config structure. If we supported other transport 592 * methods, we could select amongst them at this point in time. 593 */ 594 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) { 595 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n", 596 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1], 597 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]); 598 return(ENXIO); 599 } 600 601 /* 602 * Put the board into simple mode, and tell it we're using the low 603 * 4GB of RAM. Set the default interrupt coalescing options. 604 */ 605 if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) { 606 ciss_printf(sc, "adapter does not support 'simple' transport layer\n"); 607 return(ENXIO); 608 } 609 sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE; 610 sc->ciss_cfg->command_physlimit = 0; 611 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY; 612 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT; 613 614 #ifdef __i386__ 615 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH; 616 #endif 617 618 if (ciss_update_config(sc)) { 619 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n", 620 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR)); 621 return(ENXIO); 622 } 623 if (!(sc->ciss_cfg->active_method != CISS_TRANSPORT_METHOD_SIMPLE)) { 624 ciss_printf(sc, 625 "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n", 626 sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method); 627 return(ENXIO); 628 } 629 630 /* 631 * Wait for the adapter to come ready. 632 */ 633 if ((error = ciss_wait_adapter(sc)) != 0) 634 return(error); 635 636 /* 637 * Turn off interrupts before we go routing anything. 638 */ 639 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc); 640 641 /* 642 * Allocate and set up our interrupt. 643 */ 644 sc->ciss_irq_rid = 0; 645 if ((sc->ciss_irq_resource = 646 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 647 RF_ACTIVE | RF_SHAREABLE)) == NULL) { 648 ciss_printf(sc, "can't allocate interrupt\n"); 649 return(ENXIO); 650 } 651 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource, 652 INTR_TYPE_CAM|INTR_ENTROPY, ciss_intr, sc, 653 &sc->ciss_intr)) { 654 ciss_printf(sc, "can't set up interrupt\n"); 655 return(ENXIO); 656 } 657 658 /* 659 * Allocate the parent bus DMA tag appropriate for our PCI 660 * interface. 661 * 662 * Note that "simple" adapters can only address within a 32-bit 663 * span. 664 */ 665 if (bus_dma_tag_create(NULL, /* parent */ 666 1, 0, /* alignment, boundary */ 667 BUS_SPACE_MAXADDR, /* lowaddr */ 668 BUS_SPACE_MAXADDR, /* highaddr */ 669 NULL, NULL, /* filter, filterarg */ 670 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 671 CISS_COMMAND_SG_LENGTH, /* nsegments */ 672 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 673 BUS_DMA_ALLOCNOW, /* flags */ 674 NULL, NULL, /* lockfunc, lockarg */ 675 &sc->ciss_parent_dmat)) { 676 ciss_printf(sc, "can't allocate parent DMA tag\n"); 677 return(ENOMEM); 678 } 679 680 /* 681 * Create DMA tag for mapping buffers into adapter-addressable 682 * space. 683 */ 684 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 685 1, 0, /* alignment, boundary */ 686 BUS_SPACE_MAXADDR, /* lowaddr */ 687 BUS_SPACE_MAXADDR, /* highaddr */ 688 NULL, NULL, /* filter, filterarg */ 689 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */ 690 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 691 0, /* flags */ 692 busdma_lock_mutex, &Giant, /* lockfunc, lockarg */ 693 &sc->ciss_buffer_dmat)) { 694 ciss_printf(sc, "can't allocate buffer DMA tag\n"); 695 return(ENOMEM); 696 } 697 return(0); 698 } 699 700 /************************************************************************ 701 * Wait for the adapter to come ready. 702 */ 703 static int 704 ciss_wait_adapter(struct ciss_softc *sc) 705 { 706 int i; 707 708 debug_called(1); 709 710 /* 711 * Wait for the adapter to come ready. 712 */ 713 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) { 714 ciss_printf(sc, "waiting for adapter to come ready...\n"); 715 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) { 716 DELAY(1000000); /* one second */ 717 if (i > 30) { 718 ciss_printf(sc, "timed out waiting for adapter to come ready\n"); 719 return(EIO); 720 } 721 } 722 } 723 return(0); 724 } 725 726 /************************************************************************ 727 * Flush the adapter cache. 728 */ 729 static int 730 ciss_flush_adapter(struct ciss_softc *sc) 731 { 732 struct ciss_request *cr; 733 struct ciss_bmic_flush_cache *cbfc; 734 int error, command_status; 735 736 debug_called(1); 737 738 cr = NULL; 739 cbfc = NULL; 740 741 /* 742 * Build a BMIC request to flush the cache. We don't disable 743 * it, as we may be going to do more I/O (eg. we are emulating 744 * the Synchronise Cache command). 745 */ 746 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 747 error = ENOMEM; 748 goto out; 749 } 750 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE, 751 (void **)&cbfc, sizeof(*cbfc))) != 0) 752 goto out; 753 754 /* 755 * Submit the request and wait for it to complete. 756 */ 757 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 758 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error); 759 goto out; 760 } 761 762 /* 763 * Check response. 764 */ 765 ciss_report_request(cr, &command_status, NULL); 766 switch(command_status) { 767 case CISS_CMD_STATUS_SUCCESS: 768 break; 769 default: 770 ciss_printf(sc, "error flushing cache (%s)\n", 771 ciss_name_command_status(command_status)); 772 error = EIO; 773 goto out; 774 } 775 776 out: 777 if (cbfc != NULL) 778 free(cbfc, CISS_MALLOC_CLASS); 779 if (cr != NULL) 780 ciss_release_request(cr); 781 return(error); 782 } 783 784 static void 785 ciss_soft_reset(struct ciss_softc *sc) 786 { 787 struct ciss_request *cr = NULL; 788 struct ciss_command *cc; 789 int i, error = 0; 790 791 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 792 /* only reset proxy controllers */ 793 if (sc->ciss_controllers[i].physical.bus == 0) 794 continue; 795 796 if ((error = ciss_get_request(sc, &cr)) != 0) 797 break; 798 799 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET, 800 NULL, 0)) != 0) 801 break; 802 803 cc = CISS_FIND_COMMAND(cr); 804 cc->header.address = sc->ciss_controllers[i]; 805 806 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) 807 break; 808 809 ciss_release_request(cr); 810 } 811 812 if (error) 813 ciss_printf(sc, "error resetting controller (%d)\n", error); 814 815 if (cr != NULL) 816 ciss_release_request(cr); 817 } 818 819 /************************************************************************ 820 * Allocate memory for the adapter command structures, initialise 821 * the request structures. 822 * 823 * Note that the entire set of commands are allocated in a single 824 * contiguous slab. 825 */ 826 static int 827 ciss_init_requests(struct ciss_softc *sc) 828 { 829 struct ciss_request *cr; 830 int i; 831 832 debug_called(1); 833 834 /* 835 * Calculate the number of request structures/commands we are 836 * going to provide for this adapter. 837 */ 838 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands); 839 840 if (bootverbose) 841 ciss_printf(sc, "using %d of %d available commands\n", 842 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands); 843 844 /* 845 * Create the DMA tag for commands. 846 */ 847 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */ 848 1, 0, /* alignment, boundary */ 849 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 850 BUS_SPACE_MAXADDR, /* highaddr */ 851 NULL, NULL, /* filter, filterarg */ 852 CISS_COMMAND_ALLOC_SIZE * 853 sc->ciss_max_requests, 1, /* maxsize, nsegments */ 854 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 855 BUS_DMA_ALLOCNOW, /* flags */ 856 NULL, NULL, /* lockfunc, lockarg */ 857 &sc->ciss_command_dmat)) { 858 ciss_printf(sc, "can't allocate command DMA tag\n"); 859 return(ENOMEM); 860 } 861 /* 862 * Allocate memory and make it available for DMA. 863 */ 864 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command, 865 BUS_DMA_NOWAIT, &sc->ciss_command_map)) { 866 ciss_printf(sc, "can't allocate command memory\n"); 867 return(ENOMEM); 868 } 869 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map, sc->ciss_command, 870 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests, 871 ciss_command_map_helper, sc, 0); 872 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests); 873 874 /* 875 * Set up the request and command structures, push requests onto 876 * the free queue. 877 */ 878 for (i = 1; i < sc->ciss_max_requests; i++) { 879 cr = &sc->ciss_request[i]; 880 cr->cr_sc = sc; 881 cr->cr_tag = i; 882 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap); 883 ciss_enqueue_free(cr); 884 } 885 return(0); 886 } 887 888 static void 889 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 890 { 891 struct ciss_softc *sc = (struct ciss_softc *)arg; 892 893 sc->ciss_command_phys = segs->ds_addr; 894 } 895 896 /************************************************************************ 897 * Identify the adapter, print some information about it. 898 */ 899 static int 900 ciss_identify_adapter(struct ciss_softc *sc) 901 { 902 struct ciss_request *cr; 903 int error, command_status; 904 905 debug_called(1); 906 907 cr = NULL; 908 909 /* 910 * Get a request, allocate storage for the adapter data. 911 */ 912 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR, 913 (void **)&sc->ciss_id, 914 sizeof(*sc->ciss_id))) != 0) 915 goto out; 916 917 /* 918 * Submit the request and wait for it to complete. 919 */ 920 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 921 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error); 922 goto out; 923 } 924 925 /* 926 * Check response. 927 */ 928 ciss_report_request(cr, &command_status, NULL); 929 switch(command_status) { 930 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 931 break; 932 case CISS_CMD_STATUS_DATA_UNDERRUN: 933 case CISS_CMD_STATUS_DATA_OVERRUN: 934 ciss_printf(sc, "data over/underrun reading adapter information\n"); 935 default: 936 ciss_printf(sc, "error reading adapter information (%s)\n", 937 ciss_name_command_status(command_status)); 938 error = EIO; 939 goto out; 940 } 941 942 /* sanity-check reply */ 943 if (!sc->ciss_id->big_map_supported) { 944 ciss_printf(sc, "adapter does not support BIG_MAP\n"); 945 error = ENXIO; 946 goto out; 947 } 948 949 #if 0 950 /* XXX later revisions may not need this */ 951 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH; 952 #endif 953 954 /* XXX only really required for old 5300 adapters? */ 955 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT; 956 957 /* print information */ 958 if (bootverbose) { 959 #if 0 /* XXX proxy volumes??? */ 960 ciss_printf(sc, " %d logical drive%s configured\n", 961 sc->ciss_id->configured_logical_drives, 962 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s"); 963 #endif 964 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision); 965 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count); 966 967 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature); 968 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence); 969 ciss_printf(sc, " supported I/O methods 0x%b\n", 970 sc->ciss_cfg->supported_methods, 971 "\20\1READY\2simple\3performant\4MEMQ\n"); 972 ciss_printf(sc, " active I/O method 0x%b\n", 973 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n"); 974 ciss_printf(sc, " 4G page base 0x%08x\n", 975 sc->ciss_cfg->command_physlimit); 976 ciss_printf(sc, " interrupt coalesce delay %dus\n", 977 sc->ciss_cfg->interrupt_coalesce_delay); 978 ciss_printf(sc, " interrupt coalesce count %d\n", 979 sc->ciss_cfg->interrupt_coalesce_count); 980 ciss_printf(sc, " max outstanding commands %d\n", 981 sc->ciss_cfg->max_outstanding_commands); 982 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types, 983 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n"); 984 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name); 985 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat); 986 } 987 988 out: 989 if (error) { 990 if (sc->ciss_id != NULL) { 991 free(sc->ciss_id, CISS_MALLOC_CLASS); 992 sc->ciss_id = NULL; 993 } 994 } 995 if (cr != NULL) 996 ciss_release_request(cr); 997 return(error); 998 } 999 1000 /************************************************************************ 1001 * Helper routine for generating a list of logical and physical luns. 1002 */ 1003 static struct ciss_lun_report * 1004 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits) 1005 { 1006 struct ciss_request *cr; 1007 struct ciss_command *cc; 1008 struct ciss_report_cdb *crc; 1009 struct ciss_lun_report *cll; 1010 int command_status; 1011 int report_size; 1012 int error = 0; 1013 1014 debug_called(1); 1015 1016 cr = NULL; 1017 cll = NULL; 1018 1019 /* 1020 * Get a request, allocate storage for the address list. 1021 */ 1022 if ((error = ciss_get_request(sc, &cr)) != 0) 1023 goto out; 1024 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address); 1025 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 1026 ciss_printf(sc, "can't allocate memory for lun report\n"); 1027 error = ENOMEM; 1028 goto out; 1029 } 1030 1031 /* 1032 * Build the Report Logical/Physical LUNs command. 1033 */ 1034 cc = CISS_FIND_COMMAND(cr); 1035 cr->cr_data = cll; 1036 cr->cr_length = report_size; 1037 cr->cr_flags = CISS_REQ_DATAIN; 1038 1039 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 1040 cc->header.address.physical.bus = 0; 1041 cc->header.address.physical.target = 0; 1042 cc->cdb.cdb_length = sizeof(*crc); 1043 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1044 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1045 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1046 cc->cdb.timeout = 30; /* XXX better suggestions? */ 1047 1048 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]); 1049 bzero(crc, sizeof(*crc)); 1050 crc->opcode = opcode; 1051 crc->length = htonl(report_size); /* big-endian field */ 1052 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */ 1053 1054 /* 1055 * Submit the request and wait for it to complete. (timeout 1056 * here should be much greater than above) 1057 */ 1058 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1059 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error); 1060 goto out; 1061 } 1062 1063 /* 1064 * Check response. Note that data over/underrun is OK. 1065 */ 1066 ciss_report_request(cr, &command_status, NULL); 1067 switch(command_status) { 1068 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1069 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */ 1070 break; 1071 case CISS_CMD_STATUS_DATA_OVERRUN: 1072 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n", 1073 CISS_MAX_LOGICAL); 1074 break; 1075 default: 1076 ciss_printf(sc, "error detecting logical drive configuration (%s)\n", 1077 ciss_name_command_status(command_status)); 1078 error = EIO; 1079 goto out; 1080 } 1081 ciss_release_request(cr); 1082 cr = NULL; 1083 1084 out: 1085 if (cr != NULL) 1086 ciss_release_request(cr); 1087 if (error && cll != NULL) { 1088 free(cll, CISS_MALLOC_CLASS); 1089 cll = NULL; 1090 } 1091 return(cll); 1092 } 1093 1094 /************************************************************************ 1095 * Find logical drives on the adapter. 1096 */ 1097 static int 1098 ciss_init_logical(struct ciss_softc *sc) 1099 { 1100 struct ciss_lun_report *cll; 1101 int error = 0, i, j; 1102 int ndrives; 1103 1104 debug_called(1); 1105 1106 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 1107 CISS_MAX_LOGICAL); 1108 if (cll == NULL) { 1109 error = ENXIO; 1110 goto out; 1111 } 1112 1113 /* sanity-check reply */ 1114 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1115 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) { 1116 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n", 1117 ndrives, CISS_MAX_LOGICAL); 1118 error = ENXIO; 1119 goto out; 1120 } 1121 1122 /* 1123 * Save logical drive information. 1124 */ 1125 if (bootverbose) { 1126 ciss_printf(sc, "%d logical drive%s\n", 1127 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : ""); 1128 } 1129 1130 sc->ciss_logical = 1131 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *), 1132 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1133 if (sc->ciss_logical == NULL) { 1134 error = ENXIO; 1135 goto out; 1136 } 1137 1138 for (i = 0; i <= sc->ciss_max_logical_bus; i++) { 1139 sc->ciss_logical[i] = 1140 malloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive), 1141 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1142 if (sc->ciss_logical[i] == NULL) { 1143 error = ENXIO; 1144 goto out; 1145 } 1146 1147 for (j = 0; j < CISS_MAX_LOGICAL; j++) 1148 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT; 1149 } 1150 1151 1152 for (i = 0; i < CISS_MAX_LOGICAL; i++) { 1153 if (i < ndrives) { 1154 struct ciss_ldrive *ld; 1155 int bus, target; 1156 1157 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 1158 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 1159 ld = &sc->ciss_logical[bus][target]; 1160 1161 ld->cl_address = cll->lun[i]; 1162 ld->cl_controller = &sc->ciss_controllers[bus]; 1163 if (ciss_identify_logical(sc, ld) != 0) 1164 continue; 1165 /* 1166 * If the drive has had media exchanged, we should bring it online. 1167 */ 1168 if (ld->cl_lstatus->media_exchanged) 1169 ciss_accept_media(sc, ld); 1170 1171 } 1172 } 1173 1174 out: 1175 if (cll != NULL) 1176 free(cll, CISS_MALLOC_CLASS); 1177 return(error); 1178 } 1179 1180 static int 1181 ciss_init_physical(struct ciss_softc *sc) 1182 { 1183 struct ciss_lun_report *cll; 1184 int error = 0, i; 1185 int nphys; 1186 int bus, target; 1187 1188 debug_called(1); 1189 1190 bus = 0; 1191 target = 0; 1192 1193 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 1194 CISS_MAX_PHYSICAL); 1195 if (cll == NULL) { 1196 error = ENXIO; 1197 goto out; 1198 } 1199 1200 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1201 1202 if (bootverbose) { 1203 ciss_printf(sc, "%d physical device%s\n", 1204 nphys, (nphys > 1 || nphys == 0) ? "s" : ""); 1205 } 1206 1207 /* 1208 * Figure out the bus mapping. 1209 * Logical buses include both the local logical bus for local arrays and 1210 * proxy buses for remote arrays. Physical buses are numbered by the 1211 * controller and represent physical buses that hold physical devices. 1212 * We shift these bus numbers so that everything fits into a single flat 1213 * numbering space for CAM. Logical buses occupy the first 32 CAM bus 1214 * numbers, and the physical bus numbers are shifted to be above that. 1215 * This results in the various driver arrays being indexed as follows: 1216 * 1217 * ciss_controllers[] - indexed by logical bus 1218 * ciss_cam_sim[] - indexed by both logical and physical, with physical 1219 * being shifted by 32. 1220 * ciss_logical[][] - indexed by logical bus 1221 * ciss_physical[][] - indexed by physical bus 1222 * 1223 * XXX This is getting more and more hackish. CISS really doesn't play 1224 * well with a standard SCSI model; devices are addressed via magic 1225 * cookies, not via b/t/l addresses. Since there is no way to store 1226 * the cookie in the CAM device object, we have to keep these lookup 1227 * tables handy so that the devices can be found quickly at the cost 1228 * of wasting memory and having a convoluted lookup scheme. This 1229 * driver should probably be converted to block interface. 1230 */ 1231 /* 1232 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy 1233 * controller. A proxy controller is another physical controller 1234 * behind the primary PCI controller. We need to know about this 1235 * so that BMIC commands can be properly targeted. There can be 1236 * proxy controllers attached to a single PCI controller, so 1237 * find the highest numbered one so the array can be properly 1238 * sized. 1239 */ 1240 sc->ciss_max_logical_bus = 1; 1241 for (i = 0; i < nphys; i++) { 1242 if (cll->lun[i].physical.extra_address == 0) { 1243 bus = cll->lun[i].physical.bus; 1244 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1; 1245 } else { 1246 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address); 1247 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus); 1248 } 1249 } 1250 1251 sc->ciss_controllers = 1252 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address), 1253 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1254 1255 if (sc->ciss_controllers == NULL) { 1256 ciss_printf(sc, "Could not allocate memory for controller map\n"); 1257 error = ENOMEM; 1258 goto out; 1259 } 1260 1261 /* setup a map of controller addresses */ 1262 for (i = 0; i < nphys; i++) { 1263 if (cll->lun[i].physical.extra_address == 0) { 1264 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i]; 1265 } 1266 } 1267 1268 sc->ciss_physical = 1269 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *), 1270 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1271 if (sc->ciss_physical == NULL) { 1272 ciss_printf(sc, "Could not allocate memory for physical device map\n"); 1273 error = ENOMEM; 1274 goto out; 1275 } 1276 1277 for (i = 0; i < sc->ciss_max_physical_bus; i++) { 1278 sc->ciss_physical[i] = 1279 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT, 1280 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 1281 if (sc->ciss_physical[i] == NULL) { 1282 ciss_printf(sc, "Could not allocate memory for target map\n"); 1283 error = ENOMEM; 1284 goto out; 1285 } 1286 } 1287 1288 ciss_filter_physical(sc, cll); 1289 1290 out: 1291 if (cll != NULL) 1292 free(cll, CISS_MALLOC_CLASS); 1293 1294 return(error); 1295 } 1296 1297 static int 1298 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll) 1299 { 1300 u_int32_t ea; 1301 int i, nphys; 1302 int bus, target; 1303 1304 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 1305 for (i = 0; i < nphys; i++) { 1306 if (cll->lun[i].physical.extra_address == 0) 1307 continue; 1308 1309 /* 1310 * Filter out devices that we don't want. Level 3 LUNs could 1311 * probably be supported, but the docs don't give enough of a 1312 * hint to know how. 1313 * 1314 * The mode field of the physical address is likely set to have 1315 * hard disks masked out. Honor it unless the user has overridden 1316 * us with the tunable. We also munge the inquiry data for these 1317 * disks so that they only show up as passthrough devices. Keeping 1318 * them visible in this fashion is useful for doing things like 1319 * flashing firmware. 1320 */ 1321 ea = cll->lun[i].physical.extra_address; 1322 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) || 1323 (CISS_EXTRA_MODE2(ea) == 0x3)) 1324 continue; 1325 if ((ciss_expose_hidden_physical == 0) && 1326 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL)) 1327 continue; 1328 1329 /* 1330 * Note: CISS firmware numbers physical busses starting at '1', not 1331 * '0'. This numbering is internal to the firmware and is only 1332 * used as a hint here. 1333 */ 1334 bus = CISS_EXTRA_BUS2(ea) - 1; 1335 target = CISS_EXTRA_TARGET2(ea); 1336 sc->ciss_physical[bus][target].cp_address = cll->lun[i]; 1337 sc->ciss_physical[bus][target].cp_online = 1; 1338 } 1339 1340 return (0); 1341 } 1342 1343 static int 1344 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1345 { 1346 struct ciss_request *cr; 1347 struct ciss_command *cc; 1348 struct scsi_inquiry *inq; 1349 int error; 1350 int command_status; 1351 1352 cr = NULL; 1353 1354 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry)); 1355 1356 if ((error = ciss_get_request(sc, &cr)) != 0) 1357 goto out; 1358 1359 cc = CISS_FIND_COMMAND(cr); 1360 cr->cr_data = &ld->cl_geometry; 1361 cr->cr_length = sizeof(ld->cl_geometry); 1362 cr->cr_flags = CISS_REQ_DATAIN; 1363 1364 cc->header.address = ld->cl_address; 1365 cc->cdb.cdb_length = 6; 1366 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 1367 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 1368 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 1369 cc->cdb.timeout = 30; 1370 1371 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]); 1372 inq->opcode = INQUIRY; 1373 inq->byte2 = SI_EVPD; 1374 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY; 1375 inq->length = sizeof(ld->cl_geometry); 1376 1377 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1378 ciss_printf(sc, "error getting geometry (%d)\n", error); 1379 goto out; 1380 } 1381 1382 ciss_report_request(cr, &command_status, NULL); 1383 switch(command_status) { 1384 case CISS_CMD_STATUS_SUCCESS: 1385 case CISS_CMD_STATUS_DATA_UNDERRUN: 1386 break; 1387 case CISS_CMD_STATUS_DATA_OVERRUN: 1388 ciss_printf(sc, "WARNING: Data overrun\n"); 1389 break; 1390 default: 1391 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n", 1392 ciss_name_command_status(command_status)); 1393 break; 1394 } 1395 1396 out: 1397 if (cr != NULL) 1398 ciss_release_request(cr); 1399 return(error); 1400 } 1401 /************************************************************************ 1402 * Identify a logical drive, initialise state related to it. 1403 */ 1404 static int 1405 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld) 1406 { 1407 struct ciss_request *cr; 1408 struct ciss_command *cc; 1409 struct ciss_bmic_cdb *cbc; 1410 int error, command_status; 1411 1412 debug_called(1); 1413 1414 cr = NULL; 1415 1416 /* 1417 * Build a BMIC request to fetch the drive ID. 1418 */ 1419 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE, 1420 (void **)&ld->cl_ldrive, 1421 sizeof(*ld->cl_ldrive))) != 0) 1422 goto out; 1423 cc = CISS_FIND_COMMAND(cr); 1424 cc->header.address = *ld->cl_controller; /* target controller */ 1425 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1426 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1427 1428 /* 1429 * Submit the request and wait for it to complete. 1430 */ 1431 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1432 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error); 1433 goto out; 1434 } 1435 1436 /* 1437 * Check response. 1438 */ 1439 ciss_report_request(cr, &command_status, NULL); 1440 switch(command_status) { 1441 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1442 break; 1443 case CISS_CMD_STATUS_DATA_UNDERRUN: 1444 case CISS_CMD_STATUS_DATA_OVERRUN: 1445 ciss_printf(sc, "data over/underrun reading logical drive ID\n"); 1446 default: 1447 ciss_printf(sc, "error reading logical drive ID (%s)\n", 1448 ciss_name_command_status(command_status)); 1449 error = EIO; 1450 goto out; 1451 } 1452 ciss_release_request(cr); 1453 cr = NULL; 1454 1455 /* 1456 * Build a CISS BMIC command to get the logical drive status. 1457 */ 1458 if ((error = ciss_get_ldrive_status(sc, ld)) != 0) 1459 goto out; 1460 1461 /* 1462 * Get the logical drive geometry. 1463 */ 1464 if ((error = ciss_inquiry_logical(sc, ld)) != 0) 1465 goto out; 1466 1467 /* 1468 * Print the drive's basic characteristics. 1469 */ 1470 if (bootverbose) { 1471 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ", 1472 CISS_LUN_TO_BUS(ld->cl_address.logical.lun), 1473 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun), 1474 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance), 1475 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) * 1476 ld->cl_ldrive->block_size)); 1477 1478 ciss_print_ldrive(sc, ld); 1479 } 1480 out: 1481 if (error != 0) { 1482 /* make the drive not-exist */ 1483 ld->cl_status = CISS_LD_NONEXISTENT; 1484 if (ld->cl_ldrive != NULL) { 1485 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 1486 ld->cl_ldrive = NULL; 1487 } 1488 if (ld->cl_lstatus != NULL) { 1489 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 1490 ld->cl_lstatus = NULL; 1491 } 1492 } 1493 if (cr != NULL) 1494 ciss_release_request(cr); 1495 1496 return(error); 1497 } 1498 1499 /************************************************************************ 1500 * Get status for a logical drive. 1501 * 1502 * XXX should we also do this in response to Test Unit Ready? 1503 */ 1504 static int 1505 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld) 1506 { 1507 struct ciss_request *cr; 1508 struct ciss_command *cc; 1509 struct ciss_bmic_cdb *cbc; 1510 int error, command_status; 1511 1512 /* 1513 * Build a CISS BMIC command to get the logical drive status. 1514 */ 1515 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS, 1516 (void **)&ld->cl_lstatus, 1517 sizeof(*ld->cl_lstatus))) != 0) 1518 goto out; 1519 cc = CISS_FIND_COMMAND(cr); 1520 cc->header.address = *ld->cl_controller; /* target controller */ 1521 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1522 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1523 1524 /* 1525 * Submit the request and wait for it to complete. 1526 */ 1527 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1528 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error); 1529 goto out; 1530 } 1531 1532 /* 1533 * Check response. 1534 */ 1535 ciss_report_request(cr, &command_status, NULL); 1536 switch(command_status) { 1537 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */ 1538 break; 1539 case CISS_CMD_STATUS_DATA_UNDERRUN: 1540 case CISS_CMD_STATUS_DATA_OVERRUN: 1541 ciss_printf(sc, "data over/underrun reading logical drive status\n"); 1542 default: 1543 ciss_printf(sc, "error reading logical drive status (%s)\n", 1544 ciss_name_command_status(command_status)); 1545 error = EIO; 1546 goto out; 1547 } 1548 1549 /* 1550 * Set the drive's summary status based on the returned status. 1551 * 1552 * XXX testing shows that a failed JBOD drive comes back at next 1553 * boot in "queued for expansion" mode. WTF? 1554 */ 1555 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status); 1556 1557 out: 1558 if (cr != NULL) 1559 ciss_release_request(cr); 1560 return(error); 1561 } 1562 1563 /************************************************************************ 1564 * Notify the adapter of a config update. 1565 */ 1566 static int 1567 ciss_update_config(struct ciss_softc *sc) 1568 { 1569 int i; 1570 1571 debug_called(1); 1572 1573 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE); 1574 for (i = 0; i < 1000; i++) { 1575 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) & 1576 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) { 1577 return(0); 1578 } 1579 DELAY(1000); 1580 } 1581 return(1); 1582 } 1583 1584 /************************************************************************ 1585 * Accept new media into a logical drive. 1586 * 1587 * XXX The drive has previously been offline; it would be good if we 1588 * could make sure it's not open right now. 1589 */ 1590 static int 1591 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld) 1592 { 1593 struct ciss_request *cr; 1594 struct ciss_command *cc; 1595 struct ciss_bmic_cdb *cbc; 1596 int command_status; 1597 int error = 0, ldrive; 1598 1599 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun); 1600 1601 debug(0, "bringing logical drive %d back online"); 1602 1603 /* 1604 * Build a CISS BMIC command to bring the drive back online. 1605 */ 1606 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA, 1607 NULL, 0)) != 0) 1608 goto out; 1609 cc = CISS_FIND_COMMAND(cr); 1610 cc->header.address = *ld->cl_controller; /* target controller */ 1611 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 1612 cbc->log_drive = ldrive; 1613 1614 /* 1615 * Submit the request and wait for it to complete. 1616 */ 1617 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 1618 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error); 1619 goto out; 1620 } 1621 1622 /* 1623 * Check response. 1624 */ 1625 ciss_report_request(cr, &command_status, NULL); 1626 switch(command_status) { 1627 case CISS_CMD_STATUS_SUCCESS: /* all OK */ 1628 /* we should get a logical drive status changed event here */ 1629 break; 1630 default: 1631 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n", 1632 ciss_name_command_status(command_status)); 1633 break; 1634 } 1635 1636 out: 1637 if (cr != NULL) 1638 ciss_release_request(cr); 1639 return(error); 1640 } 1641 1642 /************************************************************************ 1643 * Release adapter resources. 1644 */ 1645 static void 1646 ciss_free(struct ciss_softc *sc) 1647 { 1648 struct ciss_request *cr; 1649 int i; 1650 1651 debug_called(1); 1652 1653 /* we're going away */ 1654 sc->ciss_flags |= CISS_FLAG_ABORTING; 1655 1656 /* terminate the periodic heartbeat routine */ 1657 untimeout(ciss_periodic, sc, sc->ciss_periodic); 1658 1659 /* cancel the Event Notify chain */ 1660 ciss_notify_abort(sc); 1661 1662 ciss_kill_notify_thread(sc); 1663 1664 /* remove the control device */ 1665 if (sc->ciss_dev_t != NULL) 1666 destroy_dev(sc->ciss_dev_t); 1667 1668 /* free the controller data */ 1669 if (sc->ciss_id != NULL) 1670 free(sc->ciss_id, CISS_MALLOC_CLASS); 1671 1672 /* release I/O resources */ 1673 if (sc->ciss_regs_resource != NULL) 1674 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1675 sc->ciss_regs_rid, sc->ciss_regs_resource); 1676 if (sc->ciss_cfg_resource != NULL) 1677 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY, 1678 sc->ciss_cfg_rid, sc->ciss_cfg_resource); 1679 if (sc->ciss_intr != NULL) 1680 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr); 1681 if (sc->ciss_irq_resource != NULL) 1682 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ, 1683 sc->ciss_irq_rid, sc->ciss_irq_resource); 1684 1685 /* destroy DMA tags */ 1686 if (sc->ciss_parent_dmat) 1687 bus_dma_tag_destroy(sc->ciss_parent_dmat); 1688 1689 while ((cr = ciss_dequeue_free(sc)) != NULL) 1690 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap); 1691 if (sc->ciss_buffer_dmat) 1692 bus_dma_tag_destroy(sc->ciss_buffer_dmat); 1693 1694 /* destroy command memory and DMA tag */ 1695 if (sc->ciss_command != NULL) { 1696 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map); 1697 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map); 1698 } 1699 if (sc->ciss_command_dmat) 1700 bus_dma_tag_destroy(sc->ciss_command_dmat); 1701 1702 /* disconnect from CAM */ 1703 if (sc->ciss_cam_sim) { 1704 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 1705 if (sc->ciss_cam_sim[i]) { 1706 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1707 cam_sim_free(sc->ciss_cam_sim[i], 0); 1708 } 1709 } 1710 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 1711 CISS_PHYSICAL_BASE; i++) { 1712 if (sc->ciss_cam_sim[i]) { 1713 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i])); 1714 cam_sim_free(sc->ciss_cam_sim[i], 0); 1715 } 1716 } 1717 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS); 1718 } 1719 if (sc->ciss_cam_devq) 1720 cam_simq_free(sc->ciss_cam_devq); 1721 1722 if (sc->ciss_logical) { 1723 for (i = 0; i < sc->ciss_max_logical_bus; i++) 1724 free(sc->ciss_logical[i], CISS_MALLOC_CLASS); 1725 free(sc->ciss_logical, CISS_MALLOC_CLASS); 1726 } 1727 1728 if (sc->ciss_physical) { 1729 for (i = 0; i < sc->ciss_max_physical_bus; i++) 1730 free(sc->ciss_physical[i], CISS_MALLOC_CLASS); 1731 free(sc->ciss_physical, CISS_MALLOC_CLASS); 1732 } 1733 1734 if (sc->ciss_controllers) 1735 free(sc->ciss_controllers, CISS_MALLOC_CLASS); 1736 } 1737 1738 /************************************************************************ 1739 * Give a command to the adapter. 1740 * 1741 * Note that this uses the simple transport layer directly. If we 1742 * want to add support for other layers, we'll need a switch of some 1743 * sort. 1744 * 1745 * Note that the simple transport layer has no way of refusing a 1746 * command; we only have as many request structures as the adapter 1747 * supports commands, so we don't have to check (this presumes that 1748 * the adapter can handle commands as fast as we throw them at it). 1749 */ 1750 static int 1751 ciss_start(struct ciss_request *cr) 1752 { 1753 struct ciss_command *cc; /* XXX debugging only */ 1754 int error; 1755 1756 cc = CISS_FIND_COMMAND(cr); 1757 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag); 1758 1759 /* 1760 * Map the request's data. 1761 */ 1762 if ((error = ciss_map_request(cr))) 1763 return(error); 1764 1765 #if 0 1766 ciss_print_request(cr); 1767 #endif 1768 1769 return(0); 1770 } 1771 1772 /************************************************************************ 1773 * Fetch completed request(s) from the adapter, queue them for 1774 * completion handling. 1775 * 1776 * Note that this uses the simple transport layer directly. If we 1777 * want to add support for other layers, we'll need a switch of some 1778 * sort. 1779 * 1780 * Note that the simple transport mechanism does not require any 1781 * reentrancy protection; the OPQ read is atomic. If there is a 1782 * chance of a race with something else that might move the request 1783 * off the busy list, then we will have to lock against that 1784 * (eg. timeouts, etc.) 1785 */ 1786 static void 1787 ciss_done(struct ciss_softc *sc) 1788 { 1789 struct ciss_request *cr; 1790 struct ciss_command *cc; 1791 u_int32_t tag, index; 1792 int complete; 1793 1794 debug_called(3); 1795 1796 /* 1797 * Loop quickly taking requests from the adapter and moving them 1798 * from the busy queue to the completed queue. 1799 */ 1800 complete = 0; 1801 for (;;) { 1802 1803 /* see if the OPQ contains anything */ 1804 if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc)) 1805 break; 1806 1807 tag = CISS_TL_SIMPLE_FETCH_CMD(sc); 1808 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY) 1809 break; 1810 index = tag >> 2; 1811 debug(2, "completed command %d%s", index, 1812 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : ""); 1813 if (index >= sc->ciss_max_requests) { 1814 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag); 1815 continue; 1816 } 1817 cr = &(sc->ciss_request[index]); 1818 cc = CISS_FIND_COMMAND(cr); 1819 cc->header.host_tag = tag; /* not updated by adapter */ 1820 if (ciss_remove_busy(cr)) { 1821 /* assume this is garbage out of the adapter */ 1822 ciss_printf(sc, "completed nonbusy request %d\n", index); 1823 } else { 1824 ciss_enqueue_complete(cr); 1825 } 1826 complete = 1; 1827 } 1828 1829 /* 1830 * Invoke completion processing. If we can defer this out of 1831 * interrupt context, that'd be good. 1832 */ 1833 if (complete) 1834 ciss_complete(sc); 1835 } 1836 1837 /************************************************************************ 1838 * Take an interrupt from the adapter. 1839 */ 1840 static void 1841 ciss_intr(void *arg) 1842 { 1843 struct ciss_softc *sc = (struct ciss_softc *)arg; 1844 1845 /* 1846 * The only interrupt we recognise indicates that there are 1847 * entries in the outbound post queue. 1848 */ 1849 ciss_done(sc); 1850 } 1851 1852 /************************************************************************ 1853 * Process completed requests. 1854 * 1855 * Requests can be completed in three fashions: 1856 * 1857 * - by invoking a callback function (cr_complete is non-null) 1858 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set) 1859 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context 1860 */ 1861 static void 1862 ciss_complete(struct ciss_softc *sc) 1863 { 1864 struct ciss_request *cr; 1865 1866 debug_called(2); 1867 1868 /* 1869 * Loop taking requests off the completed queue and performing 1870 * completion processing on them. 1871 */ 1872 for (;;) { 1873 if ((cr = ciss_dequeue_complete(sc)) == NULL) 1874 break; 1875 ciss_unmap_request(cr); 1876 1877 /* 1878 * If the request has a callback, invoke it. 1879 */ 1880 if (cr->cr_complete != NULL) { 1881 cr->cr_complete(cr); 1882 continue; 1883 } 1884 1885 /* 1886 * If someone is sleeping on this request, wake them up. 1887 */ 1888 if (cr->cr_flags & CISS_REQ_SLEEP) { 1889 cr->cr_flags &= ~CISS_REQ_SLEEP; 1890 wakeup(cr); 1891 continue; 1892 } 1893 1894 /* 1895 * If someone is polling this request for completion, signal. 1896 */ 1897 if (cr->cr_flags & CISS_REQ_POLL) { 1898 cr->cr_flags &= ~CISS_REQ_POLL; 1899 continue; 1900 } 1901 1902 /* 1903 * Give up and throw the request back on the free queue. This 1904 * should never happen; resources will probably be lost. 1905 */ 1906 ciss_printf(sc, "WARNING: completed command with no submitter\n"); 1907 ciss_enqueue_free(cr); 1908 } 1909 } 1910 1911 /************************************************************************ 1912 * Report on the completion status of a request, and pass back SCSI 1913 * and command status values. 1914 */ 1915 static int 1916 ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status) 1917 { 1918 struct ciss_command *cc; 1919 struct ciss_error_info *ce; 1920 1921 debug_called(2); 1922 1923 cc = CISS_FIND_COMMAND(cr); 1924 ce = (struct ciss_error_info *)&(cc->sg[0]); 1925 1926 /* 1927 * We don't consider data under/overrun an error for the Report 1928 * Logical/Physical LUNs commands. 1929 */ 1930 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) && 1931 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) || 1932 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS))) { 1933 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR; 1934 debug(2, "ignoring irrelevant under/overrun error"); 1935 } 1936 1937 /* 1938 * Check the command's error bit, if clear, there's no status and 1939 * everything is OK. 1940 */ 1941 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) { 1942 if (scsi_status != NULL) 1943 *scsi_status = SCSI_STATUS_OK; 1944 if (command_status != NULL) 1945 *command_status = CISS_CMD_STATUS_SUCCESS; 1946 return(0); 1947 } else { 1948 if (command_status != NULL) 1949 *command_status = ce->command_status; 1950 if (scsi_status != NULL) { 1951 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) { 1952 *scsi_status = ce->scsi_status; 1953 } else { 1954 *scsi_status = -1; 1955 } 1956 } 1957 if (bootverbose) 1958 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n", 1959 ce->command_status, ciss_name_command_status(ce->command_status), 1960 ce->scsi_status); 1961 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) { 1962 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x\n", 1963 ce->additional_error_info.invalid_command.offense_size, 1964 ce->additional_error_info.invalid_command.offense_offset, 1965 ce->additional_error_info.invalid_command.offense_value); 1966 } 1967 } 1968 #if 0 1969 ciss_print_request(cr); 1970 #endif 1971 return(1); 1972 } 1973 1974 /************************************************************************ 1975 * Issue a request and don't return until it's completed. 1976 * 1977 * Depending on adapter status, we may poll or sleep waiting for 1978 * completion. 1979 */ 1980 static int 1981 ciss_synch_request(struct ciss_request *cr, int timeout) 1982 { 1983 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) { 1984 return(ciss_wait_request(cr, timeout)); 1985 } else { 1986 return(ciss_poll_request(cr, timeout)); 1987 } 1988 } 1989 1990 /************************************************************************ 1991 * Issue a request and poll for completion. 1992 * 1993 * Timeout in milliseconds. 1994 */ 1995 static int 1996 ciss_poll_request(struct ciss_request *cr, int timeout) 1997 { 1998 int error; 1999 2000 debug_called(2); 2001 2002 cr->cr_flags |= CISS_REQ_POLL; 2003 if ((error = ciss_start(cr)) != 0) 2004 return(error); 2005 2006 do { 2007 ciss_done(cr->cr_sc); 2008 if (!(cr->cr_flags & CISS_REQ_POLL)) 2009 return(0); 2010 DELAY(1000); 2011 } while (timeout-- >= 0); 2012 return(EWOULDBLOCK); 2013 } 2014 2015 /************************************************************************ 2016 * Issue a request and sleep waiting for completion. 2017 * 2018 * Timeout in milliseconds. Note that a spurious wakeup will reset 2019 * the timeout. 2020 */ 2021 static int 2022 ciss_wait_request(struct ciss_request *cr, int timeout) 2023 { 2024 int s, error; 2025 2026 debug_called(2); 2027 2028 cr->cr_flags |= CISS_REQ_SLEEP; 2029 if ((error = ciss_start(cr)) != 0) 2030 return(error); 2031 2032 s = splcam(); 2033 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) { 2034 error = tsleep(cr, PRIBIO, "cissREQ", (timeout * hz) / 1000); 2035 } 2036 splx(s); 2037 return(error); 2038 } 2039 2040 #if 0 2041 /************************************************************************ 2042 * Abort a request. Note that a potential exists here to race the 2043 * request being completed; the caller must deal with this. 2044 */ 2045 static int 2046 ciss_abort_request(struct ciss_request *ar) 2047 { 2048 struct ciss_request *cr; 2049 struct ciss_command *cc; 2050 struct ciss_message_cdb *cmc; 2051 int error; 2052 2053 debug_called(1); 2054 2055 /* get a request */ 2056 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0) 2057 return(error); 2058 2059 /* build the abort command */ 2060 cc = CISS_FIND_COMMAND(cr); 2061 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */ 2062 cc->header.address.physical.target = 0; 2063 cc->header.address.physical.bus = 0; 2064 cc->cdb.cdb_length = sizeof(*cmc); 2065 cc->cdb.type = CISS_CDB_TYPE_MESSAGE; 2066 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2067 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2068 cc->cdb.timeout = 30; 2069 2070 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]); 2071 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT; 2072 cmc->type = CISS_MESSAGE_ABORT_TASK; 2073 cmc->abort_tag = ar->cr_tag; /* endianness?? */ 2074 2075 /* 2076 * Send the request and wait for a response. If we believe we 2077 * aborted the request OK, clear the flag that indicates it's 2078 * running. 2079 */ 2080 error = ciss_synch_request(cr, 35 * 1000); 2081 if (!error) 2082 error = ciss_report_request(cr, NULL, NULL); 2083 ciss_release_request(cr); 2084 2085 return(error); 2086 } 2087 #endif 2088 2089 2090 /************************************************************************ 2091 * Fetch and initialise a request 2092 */ 2093 static int 2094 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp) 2095 { 2096 struct ciss_request *cr; 2097 2098 debug_called(2); 2099 2100 /* 2101 * Get a request and clean it up. 2102 */ 2103 if ((cr = ciss_dequeue_free(sc)) == NULL) 2104 return(ENOMEM); 2105 2106 cr->cr_data = NULL; 2107 cr->cr_flags = 0; 2108 cr->cr_complete = NULL; 2109 cr->cr_private = NULL; 2110 2111 ciss_preen_command(cr); 2112 *crp = cr; 2113 return(0); 2114 } 2115 2116 static void 2117 ciss_preen_command(struct ciss_request *cr) 2118 { 2119 struct ciss_command *cc; 2120 u_int32_t cmdphys; 2121 2122 /* 2123 * Clean up the command structure. 2124 * 2125 * Note that we set up the error_info structure here, since the 2126 * length can be overwritten by any command. 2127 */ 2128 cc = CISS_FIND_COMMAND(cr); 2129 cc->header.sg_in_list = 0; /* kinda inefficient this way */ 2130 cc->header.sg_total = 0; 2131 cc->header.host_tag = cr->cr_tag << 2; 2132 cc->header.host_tag_zeroes = 0; 2133 cmdphys = CISS_FIND_COMMANDPHYS(cr); 2134 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command); 2135 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command); 2136 } 2137 2138 /************************************************************************ 2139 * Release a request to the free list. 2140 */ 2141 static void 2142 ciss_release_request(struct ciss_request *cr) 2143 { 2144 struct ciss_softc *sc; 2145 2146 debug_called(2); 2147 2148 sc = cr->cr_sc; 2149 2150 /* release the request to the free queue */ 2151 ciss_requeue_free(cr); 2152 } 2153 2154 /************************************************************************ 2155 * Allocate a request that will be used to send a BMIC command. Do some 2156 * of the common setup here to avoid duplicating it everywhere else. 2157 */ 2158 static int 2159 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp, 2160 int opcode, void **bufp, size_t bufsize) 2161 { 2162 struct ciss_request *cr; 2163 struct ciss_command *cc; 2164 struct ciss_bmic_cdb *cbc; 2165 void *buf; 2166 int error; 2167 int dataout; 2168 2169 debug_called(2); 2170 2171 cr = NULL; 2172 buf = NULL; 2173 2174 /* 2175 * Get a request. 2176 */ 2177 if ((error = ciss_get_request(sc, &cr)) != 0) 2178 goto out; 2179 2180 /* 2181 * Allocate data storage if requested, determine the data direction. 2182 */ 2183 dataout = 0; 2184 if ((bufsize > 0) && (bufp != NULL)) { 2185 if (*bufp == NULL) { 2186 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) { 2187 error = ENOMEM; 2188 goto out; 2189 } 2190 } else { 2191 buf = *bufp; 2192 dataout = 1; /* we are given a buffer, so we are writing */ 2193 } 2194 } 2195 2196 /* 2197 * Build a CISS BMIC command to get the logical drive ID. 2198 */ 2199 cr->cr_data = buf; 2200 cr->cr_length = bufsize; 2201 if (!dataout) 2202 cr->cr_flags = CISS_REQ_DATAIN; 2203 2204 cc = CISS_FIND_COMMAND(cr); 2205 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 2206 cc->header.address.physical.bus = 0; 2207 cc->header.address.physical.target = 0; 2208 cc->cdb.cdb_length = sizeof(*cbc); 2209 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2210 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 2211 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ; 2212 cc->cdb.timeout = 0; 2213 2214 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]); 2215 bzero(cbc, sizeof(*cbc)); 2216 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ; 2217 cbc->bmic_opcode = opcode; 2218 cbc->size = htons((u_int16_t)bufsize); 2219 2220 out: 2221 if (error) { 2222 if (cr != NULL) 2223 ciss_release_request(cr); 2224 } else { 2225 *crp = cr; 2226 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL)) 2227 *bufp = buf; 2228 } 2229 return(error); 2230 } 2231 2232 /************************************************************************ 2233 * Handle a command passed in from userspace. 2234 */ 2235 static int 2236 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc) 2237 { 2238 struct ciss_request *cr; 2239 struct ciss_command *cc; 2240 struct ciss_error_info *ce; 2241 int error = 0; 2242 2243 debug_called(1); 2244 2245 cr = NULL; 2246 2247 /* 2248 * Get a request. 2249 */ 2250 if ((error = ciss_get_request(sc, &cr)) != 0) 2251 goto out; 2252 cc = CISS_FIND_COMMAND(cr); 2253 2254 /* 2255 * Allocate an in-kernel databuffer if required, copy in user data. 2256 */ 2257 cr->cr_length = ioc->buf_size; 2258 if (ioc->buf_size > 0) { 2259 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK)) == NULL) { 2260 error = ENOMEM; 2261 goto out; 2262 } 2263 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) { 2264 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2265 goto out; 2266 } 2267 } 2268 2269 /* 2270 * Build the request based on the user command. 2271 */ 2272 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address)); 2273 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb)); 2274 2275 /* XXX anything else to populate here? */ 2276 2277 /* 2278 * Run the command. 2279 */ 2280 if ((error = ciss_synch_request(cr, 60 * 1000))) { 2281 debug(0, "request failed - %d", error); 2282 goto out; 2283 } 2284 2285 /* 2286 * Check to see if the command succeeded. 2287 */ 2288 ce = (struct ciss_error_info *)&(cc->sg[0]); 2289 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0) 2290 bzero(ce, sizeof(*ce)); 2291 2292 /* 2293 * Copy the results back to the user. 2294 */ 2295 bcopy(ce, &ioc->error_info, sizeof(*ce)); 2296 if ((ioc->buf_size > 0) && 2297 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) { 2298 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size); 2299 goto out; 2300 } 2301 2302 /* done OK */ 2303 error = 0; 2304 2305 out: 2306 if ((cr != NULL) && (cr->cr_data != NULL)) 2307 free(cr->cr_data, CISS_MALLOC_CLASS); 2308 if (cr != NULL) 2309 ciss_release_request(cr); 2310 return(error); 2311 } 2312 2313 /************************************************************************ 2314 * Map a request into bus-visible space, initialise the scatter/gather 2315 * list. 2316 */ 2317 static int 2318 ciss_map_request(struct ciss_request *cr) 2319 { 2320 struct ciss_softc *sc; 2321 int error = 0; 2322 2323 debug_called(2); 2324 2325 sc = cr->cr_sc; 2326 2327 /* check that mapping is necessary */ 2328 if (cr->cr_flags & CISS_REQ_MAPPED) 2329 return(0); 2330 2331 cr->cr_flags |= CISS_REQ_MAPPED; 2332 2333 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2334 BUS_DMASYNC_PREWRITE); 2335 2336 if (cr->cr_data != NULL) { 2337 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap, 2338 cr->cr_data, cr->cr_length, 2339 ciss_request_map_helper, cr, 0); 2340 if (error != 0) 2341 return (error); 2342 } else { 2343 /* 2344 * Post the command to the adapter. 2345 */ 2346 ciss_enqueue_busy(cr); 2347 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2348 } 2349 2350 return(0); 2351 } 2352 2353 static void 2354 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2355 { 2356 struct ciss_command *cc; 2357 struct ciss_request *cr; 2358 struct ciss_softc *sc; 2359 int i; 2360 2361 debug_called(2); 2362 2363 cr = (struct ciss_request *)arg; 2364 sc = cr->cr_sc; 2365 cc = CISS_FIND_COMMAND(cr); 2366 2367 for (i = 0; i < nseg; i++) { 2368 cc->sg[i].address = segs[i].ds_addr; 2369 cc->sg[i].length = segs[i].ds_len; 2370 cc->sg[i].extension = 0; 2371 } 2372 /* we leave the s/g table entirely within the command */ 2373 cc->header.sg_in_list = nseg; 2374 cc->header.sg_total = nseg; 2375 2376 if (cr->cr_flags & CISS_REQ_DATAIN) 2377 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD); 2378 if (cr->cr_flags & CISS_REQ_DATAOUT) 2379 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE); 2380 2381 /* 2382 * Post the command to the adapter. 2383 */ 2384 ciss_enqueue_busy(cr); 2385 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr)); 2386 } 2387 2388 /************************************************************************ 2389 * Unmap a request from bus-visible space. 2390 */ 2391 static void 2392 ciss_unmap_request(struct ciss_request *cr) 2393 { 2394 struct ciss_softc *sc; 2395 2396 debug_called(2); 2397 2398 sc = cr->cr_sc; 2399 2400 /* check that unmapping is necessary */ 2401 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0) 2402 return; 2403 2404 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map, 2405 BUS_DMASYNC_POSTWRITE); 2406 2407 if (cr->cr_data == NULL) 2408 goto out; 2409 2410 if (cr->cr_flags & CISS_REQ_DATAIN) 2411 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD); 2412 if (cr->cr_flags & CISS_REQ_DATAOUT) 2413 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE); 2414 2415 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap); 2416 out: 2417 cr->cr_flags &= ~CISS_REQ_MAPPED; 2418 } 2419 2420 /************************************************************************ 2421 * Attach the driver to CAM. 2422 * 2423 * We put all the logical drives on a single SCSI bus. 2424 */ 2425 static int 2426 ciss_cam_init(struct ciss_softc *sc) 2427 { 2428 int i, maxbus; 2429 2430 debug_called(1); 2431 2432 /* 2433 * Allocate a devq. We can reuse this for the masked physical 2434 * devices if we decide to export these as well. 2435 */ 2436 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) { 2437 ciss_printf(sc, "can't allocate CAM SIM queue\n"); 2438 return(ENOMEM); 2439 } 2440 2441 /* 2442 * Create a SIM. 2443 * 2444 * This naturally wastes a bit of memory. The alternative is to allocate 2445 * and register each bus as it is found, and then track them on a linked 2446 * list. Unfortunately, the driver has a few places where it needs to 2447 * look up the SIM based solely on bus number, and it's unclear whether 2448 * a list traversal would work for these situations. 2449 */ 2450 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus + 2451 CISS_PHYSICAL_BASE); 2452 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*), 2453 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO); 2454 if (sc->ciss_cam_sim == NULL) { 2455 ciss_printf(sc, "can't allocate memory for controller SIM\n"); 2456 return(ENOMEM); 2457 } 2458 2459 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 2460 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2461 "ciss", sc, 2462 device_get_unit(sc->ciss_dev), 2463 sc->ciss_max_requests - 2, 2464 1, 2465 sc->ciss_cam_devq)) == NULL) { 2466 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2467 return(ENOMEM); 2468 } 2469 2470 /* 2471 * Register bus with this SIM. 2472 */ 2473 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) { 2474 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) { 2475 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2476 return (ENXIO); 2477 } 2478 } 2479 } 2480 2481 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2482 CISS_PHYSICAL_BASE; i++) { 2483 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll, 2484 "ciss", sc, 2485 device_get_unit(sc->ciss_dev), 2486 sc->ciss_max_requests - 2, 2487 1, 2488 sc->ciss_cam_devq)) == NULL) { 2489 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i); 2490 return (ENOMEM); 2491 } 2492 2493 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) { 2494 ciss_printf(sc, "can't register SCSI bus %d\n", i); 2495 return (ENXIO); 2496 } 2497 } 2498 2499 /* 2500 * Initiate a rescan of the bus. 2501 */ 2502 ciss_cam_rescan_all(sc); 2503 2504 return(0); 2505 } 2506 2507 /************************************************************************ 2508 * Initiate a rescan of the 'logical devices' SIM 2509 */ 2510 static void 2511 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target) 2512 { 2513 struct cam_path *path; 2514 union ccb *ccb; 2515 2516 debug_called(1); 2517 2518 if ((ccb = malloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO)) == NULL) { 2519 ciss_printf(sc, "rescan failed (can't allocate CCB)\n"); 2520 return; 2521 } 2522 2523 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]), 2524 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 2525 ciss_printf(sc, "rescan failed (can't create path)\n"); 2526 free(ccb, M_TEMP); 2527 return; 2528 } 2529 2530 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/); 2531 ccb->ccb_h.func_code = XPT_SCAN_BUS; 2532 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback; 2533 ccb->crcn.flags = CAM_FLAG_NONE; 2534 xpt_action(ccb); 2535 2536 /* scan is now in progress */ 2537 } 2538 2539 static void 2540 ciss_cam_rescan_all(struct ciss_softc *sc) 2541 { 2542 int i; 2543 2544 /* Rescan the logical buses */ 2545 for (i = 0; i < sc->ciss_max_logical_bus; i++) 2546 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2547 /* Rescan the physical buses */ 2548 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus + 2549 CISS_PHYSICAL_BASE; i++) 2550 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD); 2551 } 2552 2553 static void 2554 ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb) 2555 { 2556 xpt_free_path(ccb->ccb_h.path); 2557 free(ccb, M_TEMP); 2558 } 2559 2560 /************************************************************************ 2561 * Handle requests coming from CAM 2562 */ 2563 static void 2564 ciss_cam_action(struct cam_sim *sim, union ccb *ccb) 2565 { 2566 struct ciss_softc *sc; 2567 struct ccb_scsiio *csio; 2568 int bus, target; 2569 int physical; 2570 2571 sc = cam_sim_softc(sim); 2572 bus = cam_sim_bus(sim); 2573 csio = (struct ccb_scsiio *)&ccb->csio; 2574 target = csio->ccb_h.target_id; 2575 physical = CISS_IS_PHYSICAL(bus); 2576 2577 switch (ccb->ccb_h.func_code) { 2578 2579 /* perform SCSI I/O */ 2580 case XPT_SCSI_IO: 2581 if (!ciss_cam_action_io(sim, csio)) 2582 return; 2583 break; 2584 2585 /* perform geometry calculations */ 2586 case XPT_CALC_GEOMETRY: 2587 { 2588 struct ccb_calc_geometry *ccg = &ccb->ccg; 2589 struct ciss_ldrive *ld; 2590 2591 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2592 2593 ld = NULL; 2594 if (!physical) 2595 ld = &sc->ciss_logical[bus][target]; 2596 2597 /* 2598 * Use the cached geometry settings unless the fault tolerance 2599 * is invalid. 2600 */ 2601 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) { 2602 u_int32_t secs_per_cylinder; 2603 2604 ccg->heads = 255; 2605 ccg->secs_per_track = 32; 2606 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 2607 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 2608 } else { 2609 ccg->heads = ld->cl_geometry.heads; 2610 ccg->secs_per_track = ld->cl_geometry.sectors; 2611 ccg->cylinders = ntohs(ld->cl_geometry.cylinders); 2612 } 2613 ccb->ccb_h.status = CAM_REQ_CMP; 2614 break; 2615 } 2616 2617 /* handle path attribute inquiry */ 2618 case XPT_PATH_INQ: 2619 { 2620 struct ccb_pathinq *cpi = &ccb->cpi; 2621 2622 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun); 2623 2624 cpi->version_num = 1; 2625 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */ 2626 cpi->target_sprt = 0; 2627 cpi->hba_misc = 0; 2628 cpi->max_target = CISS_MAX_LOGICAL; 2629 cpi->max_lun = 0; /* 'logical drive' channel only */ 2630 cpi->initiator_id = CISS_MAX_LOGICAL; 2631 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 2632 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN); 2633 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2634 cpi->unit_number = cam_sim_unit(sim); 2635 cpi->bus_id = cam_sim_bus(sim); 2636 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */ 2637 ccb->ccb_h.status = CAM_REQ_CMP; 2638 break; 2639 } 2640 2641 case XPT_GET_TRAN_SETTINGS: 2642 { 2643 struct ccb_trans_settings *cts = &ccb->cts; 2644 int bus, target; 2645 2646 bus = cam_sim_bus(sim); 2647 target = cts->ccb_h.target_id; 2648 2649 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target); 2650 cts->valid = 0; 2651 2652 /* disconnect always OK */ 2653 cts->flags |= CCB_TRANS_DISC_ENB; 2654 cts->valid |= CCB_TRANS_DISC_VALID; 2655 2656 cts->ccb_h.status = CAM_REQ_CMP; 2657 break; 2658 } 2659 2660 default: /* we can't do this */ 2661 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code); 2662 ccb->ccb_h.status = CAM_REQ_INVALID; 2663 break; 2664 } 2665 2666 xpt_done(ccb); 2667 } 2668 2669 /************************************************************************ 2670 * Handle a CAM SCSI I/O request. 2671 */ 2672 static int 2673 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio) 2674 { 2675 struct ciss_softc *sc; 2676 int bus, target; 2677 struct ciss_request *cr; 2678 struct ciss_command *cc; 2679 int error; 2680 2681 sc = cam_sim_softc(sim); 2682 bus = cam_sim_bus(sim); 2683 target = csio->ccb_h.target_id; 2684 2685 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun); 2686 2687 /* firmware does not support commands > 10 bytes */ 2688 if (csio->cdb_len > 12/*CISS_CDB_BUFFER_SIZE*/) { 2689 debug(3, " command too large (%d > %d)", csio->cdb_len, CISS_CDB_BUFFER_SIZE); 2690 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2691 } 2692 2693 /* check that the CDB pointer is not to a physical address */ 2694 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) { 2695 debug(3, " CDB pointer is to physical address"); 2696 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2697 } 2698 2699 /* if there is data transfer, it must be to/from a virtual address */ 2700 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 2701 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */ 2702 debug(3, " data pointer is to physical address"); 2703 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2704 } 2705 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */ 2706 debug(3, " data has premature s/g setup"); 2707 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2708 } 2709 } 2710 2711 /* abandon aborted ccbs or those that have failed validation */ 2712 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) { 2713 debug(3, "abandoning CCB due to abort/validation failure"); 2714 return(EINVAL); 2715 } 2716 2717 /* handle emulation of some SCSI commands ourself */ 2718 if (ciss_cam_emulate(sc, csio)) 2719 return(0); 2720 2721 /* 2722 * Get a request to manage this command. If we can't, return the 2723 * ccb, freeze the queue and flag so that we unfreeze it when a 2724 * request completes. 2725 */ 2726 if ((error = ciss_get_request(sc, &cr)) != 0) { 2727 xpt_freeze_simq(sim, 1); 2728 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2729 return(error); 2730 } 2731 2732 /* 2733 * Build the command. 2734 */ 2735 cc = CISS_FIND_COMMAND(cr); 2736 cr->cr_data = csio->data_ptr; 2737 cr->cr_length = csio->dxfer_len; 2738 cr->cr_complete = ciss_cam_complete; 2739 cr->cr_private = csio; 2740 2741 /* 2742 * Target the right logical volume. 2743 */ 2744 if (CISS_IS_PHYSICAL(bus)) 2745 cc->header.address = 2746 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address; 2747 else 2748 cc->header.address = 2749 sc->ciss_logical[bus][target].cl_address; 2750 cc->cdb.cdb_length = csio->cdb_len; 2751 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 2752 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */ 2753 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2754 cr->cr_flags = CISS_REQ_DATAOUT; 2755 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE; 2756 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 2757 cr->cr_flags = CISS_REQ_DATAIN; 2758 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 2759 } else { 2760 cr->cr_flags = 0; 2761 cc->cdb.direction = CISS_CDB_DIRECTION_NONE; 2762 } 2763 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1; 2764 if (csio->ccb_h.flags & CAM_CDB_POINTER) { 2765 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len); 2766 } else { 2767 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len); 2768 } 2769 2770 /* 2771 * Submit the request to the adapter. 2772 * 2773 * Note that this may fail if we're unable to map the request (and 2774 * if we ever learn a transport layer other than simple, may fail 2775 * if the adapter rejects the command). 2776 */ 2777 if ((error = ciss_start(cr)) != 0) { 2778 xpt_freeze_simq(sim, 1); 2779 if (error == EINPROGRESS) { 2780 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2781 error = 0; 2782 } else { 2783 csio->ccb_h.status |= CAM_REQUEUE_REQ; 2784 ciss_release_request(cr); 2785 } 2786 return(error); 2787 } 2788 2789 return(0); 2790 } 2791 2792 /************************************************************************ 2793 * Emulate SCSI commands the adapter doesn't handle as we might like. 2794 */ 2795 static int 2796 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio) 2797 { 2798 int bus, target; 2799 u_int8_t opcode; 2800 2801 target = csio->ccb_h.target_id; 2802 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 2803 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ? 2804 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]; 2805 2806 if (CISS_IS_PHYSICAL(bus)) { 2807 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) { 2808 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2809 xpt_done((union ccb *)csio); 2810 return(1); 2811 } else 2812 return(0); 2813 } 2814 2815 /* 2816 * Handle requests for volumes that don't exist or are not online. 2817 * A selection timeout is slightly better than an illegal request. 2818 * Other errors might be better. 2819 */ 2820 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) { 2821 csio->ccb_h.status = CAM_SEL_TIMEOUT; 2822 xpt_done((union ccb *)csio); 2823 return(1); 2824 } 2825 2826 /* if we have to fake Synchronise Cache */ 2827 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) { 2828 /* 2829 * If this is a Synchronise Cache command, typically issued when 2830 * a device is closed, flush the adapter and complete now. 2831 */ 2832 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2833 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) { 2834 ciss_flush_adapter(sc); 2835 csio->ccb_h.status = CAM_REQ_CMP; 2836 xpt_done((union ccb *)csio); 2837 return(1); 2838 } 2839 } 2840 2841 return(0); 2842 } 2843 2844 /************************************************************************ 2845 * Check for possibly-completed commands. 2846 */ 2847 static void 2848 ciss_cam_poll(struct cam_sim *sim) 2849 { 2850 struct ciss_softc *sc = cam_sim_softc(sim); 2851 2852 debug_called(2); 2853 2854 ciss_done(sc); 2855 } 2856 2857 /************************************************************************ 2858 * Handle completion of a command - pass results back through the CCB 2859 */ 2860 static void 2861 ciss_cam_complete(struct ciss_request *cr) 2862 { 2863 struct ciss_softc *sc; 2864 struct ciss_command *cc; 2865 struct ciss_error_info *ce; 2866 struct ccb_scsiio *csio; 2867 int scsi_status; 2868 int command_status; 2869 2870 debug_called(2); 2871 2872 sc = cr->cr_sc; 2873 cc = CISS_FIND_COMMAND(cr); 2874 ce = (struct ciss_error_info *)&(cc->sg[0]); 2875 csio = (struct ccb_scsiio *)cr->cr_private; 2876 2877 /* 2878 * Extract status values from request. 2879 */ 2880 ciss_report_request(cr, &command_status, &scsi_status); 2881 csio->scsi_status = scsi_status; 2882 2883 /* 2884 * Handle specific SCSI status values. 2885 */ 2886 switch(scsi_status) { 2887 /* no status due to adapter error */ 2888 case -1: 2889 debug(0, "adapter error"); 2890 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2891 break; 2892 2893 /* no status due to command completed OK */ 2894 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */ 2895 debug(2, "SCSI_STATUS_OK"); 2896 csio->ccb_h.status = CAM_REQ_CMP; 2897 break; 2898 2899 /* check condition, sense data included */ 2900 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */ 2901 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n", 2902 ce->sense_length, ce->residual_count); 2903 bzero(&csio->sense_data, SSD_FULL_SIZE); 2904 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length); 2905 csio->sense_len = ce->sense_length; 2906 csio->resid = ce->residual_count; 2907 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID; 2908 #ifdef CISS_DEBUG 2909 { 2910 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0]; 2911 debug(0, "sense key %x", sns->flags & SSD_KEY); 2912 } 2913 #endif 2914 break; 2915 2916 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */ 2917 debug(0, "SCSI_STATUS_BUSY"); 2918 csio->ccb_h.status = CAM_SCSI_BUSY; 2919 break; 2920 2921 default: 2922 debug(0, "unknown status 0x%x", csio->scsi_status); 2923 csio->ccb_h.status = CAM_REQ_CMP_ERR; 2924 break; 2925 } 2926 2927 /* handle post-command fixup */ 2928 ciss_cam_complete_fixup(sc, csio); 2929 2930 /* tell CAM we're ready for more commands */ 2931 csio->ccb_h.status |= CAM_RELEASE_SIMQ; 2932 2933 xpt_done((union ccb *)csio); 2934 ciss_release_request(cr); 2935 } 2936 2937 /******************************************************************************** 2938 * Fix up the result of some commands here. 2939 */ 2940 static void 2941 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio) 2942 { 2943 struct scsi_inquiry_data *inq; 2944 struct ciss_ldrive *cl; 2945 int bus, target; 2946 2947 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ? 2948 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) { 2949 2950 inq = (struct scsi_inquiry_data *)csio->data_ptr; 2951 target = csio->ccb_h.target_id; 2952 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path)); 2953 2954 /* 2955 * Don't let hard drives be seen by the DA driver. They will still be 2956 * attached by the PASS driver. 2957 */ 2958 if (CISS_IS_PHYSICAL(bus)) { 2959 if (SID_TYPE(inq) == T_DIRECT) 2960 inq->device = (inq->device & 0xe0) | T_NODEVICE; 2961 return; 2962 } 2963 2964 cl = &sc->ciss_logical[bus][target]; 2965 2966 padstr(inq->vendor, "COMPAQ", 8); 2967 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8); 2968 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16); 2969 } 2970 } 2971 2972 2973 /******************************************************************************** 2974 * Find a peripheral attached at (target) 2975 */ 2976 static struct cam_periph * 2977 ciss_find_periph(struct ciss_softc *sc, int bus, int target) 2978 { 2979 struct cam_periph *periph; 2980 struct cam_path *path; 2981 int status; 2982 2983 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]), 2984 target, 0); 2985 if (status == CAM_REQ_CMP) { 2986 periph = cam_periph_find(path, NULL); 2987 xpt_free_path(path); 2988 } else { 2989 periph = NULL; 2990 } 2991 return(periph); 2992 } 2993 2994 /******************************************************************************** 2995 * Name the device at (target) 2996 * 2997 * XXX is this strictly correct? 2998 */ 2999 static int 3000 ciss_name_device(struct ciss_softc *sc, int bus, int target) 3001 { 3002 struct cam_periph *periph; 3003 3004 if (CISS_IS_PHYSICAL(bus)) 3005 return (0); 3006 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) { 3007 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d", 3008 periph->periph_name, periph->unit_number); 3009 return(0); 3010 } 3011 sc->ciss_logical[bus][target].cl_name[0] = 0; 3012 return(ENOENT); 3013 } 3014 3015 /************************************************************************ 3016 * Periodic status monitoring. 3017 */ 3018 static void 3019 ciss_periodic(void *arg) 3020 { 3021 struct ciss_softc *sc; 3022 3023 debug_called(1); 3024 3025 sc = (struct ciss_softc *)arg; 3026 3027 /* 3028 * Check the adapter heartbeat. 3029 */ 3030 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) { 3031 sc->ciss_heart_attack++; 3032 debug(0, "adapter heart attack in progress 0x%x/%d", 3033 sc->ciss_heartbeat, sc->ciss_heart_attack); 3034 if (sc->ciss_heart_attack == 3) { 3035 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n"); 3036 /* XXX should reset adapter here */ 3037 } 3038 } else { 3039 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat; 3040 sc->ciss_heart_attack = 0; 3041 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat); 3042 } 3043 3044 /* 3045 * If the notify event request has died for some reason, or has 3046 * not started yet, restart it. 3047 */ 3048 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) { 3049 debug(0, "(re)starting Event Notify chain"); 3050 ciss_notify_event(sc); 3051 } 3052 3053 /* 3054 * Reschedule. 3055 */ 3056 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) 3057 sc->ciss_periodic = timeout(ciss_periodic, sc, CISS_HEARTBEAT_RATE * hz); 3058 } 3059 3060 /************************************************************************ 3061 * Request a notification response from the adapter. 3062 * 3063 * If (cr) is NULL, this is the first request of the adapter, so 3064 * reset the adapter's message pointer and start with the oldest 3065 * message available. 3066 */ 3067 static void 3068 ciss_notify_event(struct ciss_softc *sc) 3069 { 3070 struct ciss_request *cr; 3071 struct ciss_command *cc; 3072 struct ciss_notify_cdb *cnc; 3073 int error; 3074 3075 debug_called(1); 3076 3077 cr = sc->ciss_periodic_notify; 3078 3079 /* get a request if we don't already have one */ 3080 if (cr == NULL) { 3081 if ((error = ciss_get_request(sc, &cr)) != 0) { 3082 debug(0, "can't get notify event request"); 3083 goto out; 3084 } 3085 sc->ciss_periodic_notify = cr; 3086 cr->cr_complete = ciss_notify_complete; 3087 debug(1, "acquired request %d", cr->cr_tag); 3088 } 3089 3090 /* 3091 * Get a databuffer if we don't already have one, note that the 3092 * adapter command wants a larger buffer than the actual 3093 * structure. 3094 */ 3095 if (cr->cr_data == NULL) { 3096 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3097 debug(0, "can't get notify event request buffer"); 3098 error = ENOMEM; 3099 goto out; 3100 } 3101 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3102 } 3103 3104 /* re-setup the request's command (since we never release it) XXX overkill*/ 3105 ciss_preen_command(cr); 3106 3107 /* (re)build the notify event command */ 3108 cc = CISS_FIND_COMMAND(cr); 3109 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3110 cc->header.address.physical.bus = 0; 3111 cc->header.address.physical.target = 0; 3112 3113 cc->cdb.cdb_length = sizeof(*cnc); 3114 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3115 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3116 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3117 cc->cdb.timeout = 0; /* no timeout, we hope */ 3118 3119 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3120 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE); 3121 cnc->opcode = CISS_OPCODE_READ; 3122 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT; 3123 cnc->timeout = 0; /* no timeout, we hope */ 3124 cnc->synchronous = 0; 3125 cnc->ordered = 0; 3126 cnc->seek_to_oldest = 0; 3127 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0) 3128 cnc->new_only = 1; 3129 else 3130 cnc->new_only = 0; 3131 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3132 3133 /* submit the request */ 3134 error = ciss_start(cr); 3135 3136 out: 3137 if (error) { 3138 if (cr != NULL) { 3139 if (cr->cr_data != NULL) 3140 free(cr->cr_data, CISS_MALLOC_CLASS); 3141 ciss_release_request(cr); 3142 } 3143 sc->ciss_periodic_notify = NULL; 3144 debug(0, "can't submit notify event request"); 3145 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3146 } else { 3147 debug(1, "notify event submitted"); 3148 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK; 3149 } 3150 } 3151 3152 static void 3153 ciss_notify_complete(struct ciss_request *cr) 3154 { 3155 struct ciss_command *cc; 3156 struct ciss_notify *cn; 3157 struct ciss_softc *sc; 3158 int scsi_status; 3159 int command_status; 3160 debug_called(1); 3161 3162 cc = CISS_FIND_COMMAND(cr); 3163 cn = (struct ciss_notify *)cr->cr_data; 3164 sc = cr->cr_sc; 3165 3166 /* 3167 * Report request results, decode status. 3168 */ 3169 ciss_report_request(cr, &command_status, &scsi_status); 3170 3171 /* 3172 * Abort the chain on a fatal error. 3173 * 3174 * XXX which of these are actually errors? 3175 */ 3176 if ((command_status != CISS_CMD_STATUS_SUCCESS) && 3177 (command_status != CISS_CMD_STATUS_TARGET_STATUS) && 3178 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */ 3179 ciss_printf(sc, "fatal error in Notify Event request (%s)\n", 3180 ciss_name_command_status(command_status)); 3181 ciss_release_request(cr); 3182 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3183 return; 3184 } 3185 3186 /* 3187 * If the adapter gave us a text message, print it. 3188 */ 3189 if (cn->message[0] != 0) 3190 ciss_printf(sc, "*** %.80s\n", cn->message); 3191 3192 debug(0, "notify event class %d subclass %d detail %d", 3193 cn->class, cn->subclass, cn->detail); 3194 3195 /* 3196 * If the response indicates that the notifier has been aborted, 3197 * release the notifier command. 3198 */ 3199 if ((cn->class == CISS_NOTIFY_NOTIFIER) && 3200 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) && 3201 (cn->detail == 1)) { 3202 debug(0, "notifier exiting"); 3203 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3204 ciss_release_request(cr); 3205 sc->ciss_periodic_notify = NULL; 3206 wakeup(&sc->ciss_periodic_notify); 3207 } else { 3208 /* Handle notify events in a kernel thread */ 3209 ciss_enqueue_notify(cr); 3210 sc->ciss_periodic_notify = NULL; 3211 wakeup(&sc->ciss_periodic_notify); 3212 wakeup(&sc->ciss_notify); 3213 } 3214 /* 3215 * Send a new notify event command, if we're not aborting. 3216 */ 3217 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) { 3218 ciss_notify_event(sc); 3219 } 3220 } 3221 3222 /************************************************************************ 3223 * Abort the Notify Event chain. 3224 * 3225 * Note that we can't just abort the command in progress; we have to 3226 * explicitly issue an Abort Notify Event command in order for the 3227 * adapter to clean up correctly. 3228 * 3229 * If we are called with CISS_FLAG_ABORTING set in the adapter softc, 3230 * the chain will not restart itself. 3231 */ 3232 static int 3233 ciss_notify_abort(struct ciss_softc *sc) 3234 { 3235 struct ciss_request *cr; 3236 struct ciss_command *cc; 3237 struct ciss_notify_cdb *cnc; 3238 int error, s, command_status, scsi_status; 3239 3240 debug_called(1); 3241 3242 cr = NULL; 3243 error = 0; 3244 3245 /* verify that there's an outstanding command */ 3246 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3247 goto out; 3248 3249 /* get a command to issue the abort with */ 3250 if ((error = ciss_get_request(sc, &cr))) 3251 goto out; 3252 3253 /* get a buffer for the result */ 3254 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) { 3255 debug(0, "can't get notify event request buffer"); 3256 error = ENOMEM; 3257 goto out; 3258 } 3259 cr->cr_length = CISS_NOTIFY_DATA_SIZE; 3260 3261 /* build the CDB */ 3262 cc = CISS_FIND_COMMAND(cr); 3263 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; 3264 cc->header.address.physical.bus = 0; 3265 cc->header.address.physical.target = 0; 3266 cc->cdb.cdb_length = sizeof(*cnc); 3267 cc->cdb.type = CISS_CDB_TYPE_COMMAND; 3268 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; 3269 cc->cdb.direction = CISS_CDB_DIRECTION_READ; 3270 cc->cdb.timeout = 0; /* no timeout, we hope */ 3271 3272 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]); 3273 bzero(cnc, sizeof(*cnc)); 3274 cnc->opcode = CISS_OPCODE_WRITE; 3275 cnc->command = CISS_COMMAND_ABORT_NOTIFY; 3276 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE); 3277 3278 ciss_print_request(cr); 3279 3280 /* 3281 * Submit the request and wait for it to complete. 3282 */ 3283 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3284 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error); 3285 goto out; 3286 } 3287 3288 /* 3289 * Check response. 3290 */ 3291 ciss_report_request(cr, &command_status, &scsi_status); 3292 switch(command_status) { 3293 case CISS_CMD_STATUS_SUCCESS: 3294 break; 3295 case CISS_CMD_STATUS_INVALID_COMMAND: 3296 /* 3297 * Some older adapters don't support the CISS version of this 3298 * command. Fall back to using the BMIC version. 3299 */ 3300 error = ciss_notify_abort_bmic(sc); 3301 if (error != 0) 3302 goto out; 3303 break; 3304 3305 case CISS_CMD_STATUS_TARGET_STATUS: 3306 /* 3307 * This can happen if the adapter thinks there wasn't an outstanding 3308 * Notify Event command but we did. We clean up here. 3309 */ 3310 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) { 3311 if (sc->ciss_periodic_notify != NULL) 3312 ciss_release_request(sc->ciss_periodic_notify); 3313 error = 0; 3314 goto out; 3315 } 3316 /* FALLTHROUGH */ 3317 3318 default: 3319 ciss_printf(sc, "Abort Notify Event command failed (%s)\n", 3320 ciss_name_command_status(command_status)); 3321 error = EIO; 3322 goto out; 3323 } 3324 3325 /* 3326 * Sleep waiting for the notifier command to complete. Note 3327 * that if it doesn't, we may end up in a bad situation, since 3328 * the adapter may deliver it later. Also note that the adapter 3329 * requires the Notify Event command to be cancelled in order to 3330 * maintain internal bookkeeping. 3331 */ 3332 s = splcam(); 3333 while (sc->ciss_periodic_notify != NULL) { 3334 error = tsleep(&sc->ciss_periodic_notify, 0, "cissNEA", hz * 5); 3335 if (error == EWOULDBLOCK) { 3336 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n"); 3337 break; 3338 } 3339 } 3340 splx(s); 3341 3342 out: 3343 /* release the cancel request */ 3344 if (cr != NULL) { 3345 if (cr->cr_data != NULL) 3346 free(cr->cr_data, CISS_MALLOC_CLASS); 3347 ciss_release_request(cr); 3348 } 3349 if (error == 0) 3350 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK; 3351 return(error); 3352 } 3353 3354 /************************************************************************ 3355 * Abort the Notify Event chain using a BMIC command. 3356 */ 3357 static int 3358 ciss_notify_abort_bmic(struct ciss_softc *sc) 3359 { 3360 struct ciss_request *cr; 3361 int error, command_status; 3362 3363 debug_called(1); 3364 3365 cr = NULL; 3366 error = 0; 3367 3368 /* verify that there's an outstanding command */ 3369 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) 3370 goto out; 3371 3372 /* 3373 * Build a BMIC command to cancel the Notify on Event command. 3374 * 3375 * Note that we are sending a CISS opcode here. Odd. 3376 */ 3377 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY, 3378 NULL, 0)) != 0) 3379 goto out; 3380 3381 /* 3382 * Submit the request and wait for it to complete. 3383 */ 3384 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) { 3385 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error); 3386 goto out; 3387 } 3388 3389 /* 3390 * Check response. 3391 */ 3392 ciss_report_request(cr, &command_status, NULL); 3393 switch(command_status) { 3394 case CISS_CMD_STATUS_SUCCESS: 3395 break; 3396 default: 3397 ciss_printf(sc, "error cancelling Notify on Event (%s)\n", 3398 ciss_name_command_status(command_status)); 3399 error = EIO; 3400 goto out; 3401 } 3402 3403 out: 3404 if (cr != NULL) 3405 ciss_release_request(cr); 3406 return(error); 3407 } 3408 3409 /************************************************************************ 3410 * Handle rescanning all the logical volumes when a notify event 3411 * causes the drives to come online or offline. 3412 */ 3413 static void 3414 ciss_notify_rescan_logical(struct ciss_softc *sc) 3415 { 3416 struct ciss_lun_report *cll; 3417 struct ciss_ldrive *ld; 3418 int i, j, ndrives; 3419 3420 /* 3421 * We must rescan all logical volumes to get the right logical 3422 * drive address. 3423 */ 3424 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS, 3425 CISS_MAX_LOGICAL); 3426 if (cll == NULL) 3427 return; 3428 3429 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address)); 3430 3431 /* 3432 * Delete any of the drives which were destroyed by the 3433 * firmware. 3434 */ 3435 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 3436 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 3437 ld = &sc->ciss_logical[i][j]; 3438 3439 if (ld->cl_update == 0) 3440 continue; 3441 3442 if (ld->cl_status != CISS_LD_ONLINE) { 3443 ciss_cam_rescan_target(sc, i, j); 3444 ld->cl_update = 0; 3445 if (ld->cl_ldrive) 3446 free(ld->cl_ldrive, CISS_MALLOC_CLASS); 3447 if (ld->cl_lstatus) 3448 free(ld->cl_lstatus, CISS_MALLOC_CLASS); 3449 3450 ld->cl_ldrive = NULL; 3451 ld->cl_lstatus = NULL; 3452 } 3453 } 3454 } 3455 3456 /* 3457 * Scan for new drives. 3458 */ 3459 for (i = 0; i < ndrives; i++) { 3460 int bus, target; 3461 3462 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun); 3463 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun); 3464 ld = &sc->ciss_logical[bus][target]; 3465 3466 if (ld->cl_update == 0) 3467 continue; 3468 3469 ld->cl_update = 0; 3470 ld->cl_address = cll->lun[i]; 3471 ld->cl_controller = &sc->ciss_controllers[bus]; 3472 if (ciss_identify_logical(sc, ld) == 0) { 3473 ciss_cam_rescan_target(sc, bus, target); 3474 } 3475 } 3476 free(cll, CISS_MALLOC_CLASS); 3477 } 3478 3479 /************************************************************************ 3480 * Handle a notify event relating to the status of a logical drive. 3481 * 3482 * XXX need to be able to defer some of these to properly handle 3483 * calling the "ID Physical drive" command, unless the 'extended' 3484 * drive IDs are always in BIG_MAP format. 3485 */ 3486 static void 3487 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn) 3488 { 3489 struct ciss_ldrive *ld; 3490 int ostatus, bus, target; 3491 3492 debug_called(2); 3493 3494 bus = cn->device.physical.bus; 3495 target = cn->data.logical_status.logical_drive; 3496 ld = &sc->ciss_logical[bus][target]; 3497 3498 switch (cn->subclass) { 3499 case CISS_NOTIFY_LOGICAL_STATUS: 3500 switch (cn->detail) { 3501 case 0: 3502 ciss_name_device(sc, bus, target); 3503 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n", 3504 cn->data.logical_status.logical_drive, ld->cl_name, 3505 ciss_name_ldrive_status(cn->data.logical_status.previous_state), 3506 ciss_name_ldrive_status(cn->data.logical_status.new_state), 3507 cn->data.logical_status.spare_state, 3508 "\20\1configured\2rebuilding\3failed\4in use\5available\n"); 3509 3510 /* 3511 * Update our idea of the drive's status. 3512 */ 3513 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state); 3514 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3515 if (ld->cl_lstatus != NULL) 3516 ld->cl_lstatus->status = cn->data.logical_status.new_state; 3517 3518 /* 3519 * Have CAM rescan the drive if its status has changed. 3520 */ 3521 if (ostatus != ld->cl_status) { 3522 ld->cl_update = 1; 3523 ciss_notify_rescan_logical(sc); 3524 } 3525 3526 break; 3527 3528 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */ 3529 ciss_name_device(sc, bus, target); 3530 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n", 3531 cn->data.logical_status.logical_drive, ld->cl_name); 3532 ciss_accept_media(sc, ld); 3533 3534 ld->cl_update = 1; 3535 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state); 3536 ciss_notify_rescan_logical(sc); 3537 break; 3538 3539 case 2: 3540 case 3: 3541 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n", 3542 cn->data.rebuild_aborted.logical_drive, 3543 ld->cl_name, 3544 (cn->detail == 2) ? "read" : "write"); 3545 break; 3546 } 3547 break; 3548 3549 case CISS_NOTIFY_LOGICAL_ERROR: 3550 if (cn->detail == 0) { 3551 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n", 3552 cn->data.io_error.logical_drive, 3553 ld->cl_name, 3554 cn->data.io_error.failure_bus, 3555 cn->data.io_error.failure_drive); 3556 /* XXX should we take the drive down at this point, or will we be told? */ 3557 } 3558 break; 3559 3560 case CISS_NOTIFY_LOGICAL_SURFACE: 3561 if (cn->detail == 0) 3562 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n", 3563 cn->data.consistency_completed.logical_drive, 3564 ld->cl_name); 3565 break; 3566 } 3567 } 3568 3569 /************************************************************************ 3570 * Handle a notify event relating to the status of a physical drive. 3571 */ 3572 static void 3573 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn) 3574 { 3575 } 3576 3577 /************************************************************************ 3578 * Handle a notify event relating to the status of a physical drive. 3579 */ 3580 static void 3581 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn) 3582 { 3583 struct ciss_lun_report *cll; 3584 int bus, target; 3585 int s; 3586 3587 switch (cn->subclass) { 3588 case CISS_NOTIFY_HOTPLUG_PHYSICAL: 3589 case CISS_NOTIFY_HOTPLUG_NONDISK: 3590 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number); 3591 target = 3592 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number); 3593 3594 s = splcam(); 3595 if (cn->detail == 0) { 3596 /* 3597 * Mark the device offline so that it'll start producing selection 3598 * timeouts to the upper layer. 3599 */ 3600 if ((bus >= 0) && (target >= 0)) 3601 sc->ciss_physical[bus][target].cp_online = 0; 3602 } else { 3603 /* 3604 * Rescan the physical lun list for new items 3605 */ 3606 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS, 3607 CISS_MAX_PHYSICAL); 3608 if (cll == NULL) { 3609 ciss_printf(sc, "Warning, cannot get physical lun list\n"); 3610 break; 3611 } 3612 ciss_filter_physical(sc, cll); 3613 } 3614 splx(s); 3615 break; 3616 3617 default: 3618 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass); 3619 return; 3620 } 3621 } 3622 3623 /************************************************************************ 3624 * Handle deferred processing of notify events. Notify events may need 3625 * sleep which is unsafe during an interrupt. 3626 */ 3627 static void 3628 ciss_notify_thread(void *arg) 3629 { 3630 struct ciss_softc *sc; 3631 struct ciss_request *cr; 3632 struct ciss_notify *cn; 3633 int s; 3634 3635 #if __FreeBSD_version >= 500000 3636 mtx_lock(&Giant); 3637 #endif 3638 sc = (struct ciss_softc *)arg; 3639 3640 s = splcam(); 3641 for (;;) { 3642 if (TAILQ_EMPTY(&sc->ciss_notify) != 0 && 3643 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) { 3644 tsleep(&sc->ciss_notify, PUSER, "idle", 0); 3645 } 3646 3647 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) 3648 break; 3649 3650 cr = ciss_dequeue_notify(sc); 3651 splx(s); 3652 3653 if (cr == NULL) 3654 panic("cr null"); 3655 cn = (struct ciss_notify *)cr->cr_data; 3656 3657 switch (cn->class) { 3658 case CISS_NOTIFY_HOTPLUG: 3659 ciss_notify_hotplug(sc, cn); 3660 break; 3661 case CISS_NOTIFY_LOGICAL: 3662 ciss_notify_logical(sc, cn); 3663 break; 3664 case CISS_NOTIFY_PHYSICAL: 3665 ciss_notify_physical(sc, cn); 3666 break; 3667 } 3668 3669 ciss_release_request(cr); 3670 3671 s = splcam(); 3672 } 3673 sc->ciss_notify_thread = NULL; 3674 wakeup(&sc->ciss_notify_thread); 3675 splx(s); 3676 3677 #if __FreeBSD_version >= 500000 3678 mtx_unlock(&Giant); 3679 #endif 3680 kthread_exit(0); 3681 } 3682 3683 /************************************************************************ 3684 * Start the notification kernel thread. 3685 */ 3686 static void 3687 ciss_spawn_notify_thread(struct ciss_softc *sc) 3688 { 3689 3690 #if __FreeBSD_version > 500005 3691 if (kthread_create((void(*)(void *))ciss_notify_thread, sc, 3692 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d", 3693 device_get_unit(sc->ciss_dev))) 3694 #else 3695 if (kthread_create((void(*)(void *))ciss_notify_thread, sc, 3696 &sc->ciss_notify_thread, "ciss_notify%d", 3697 device_get_unit(sc->ciss_dev))) 3698 #endif 3699 panic("Could not create notify thread\n"); 3700 } 3701 3702 /************************************************************************ 3703 * Kill the notification kernel thread. 3704 */ 3705 static void 3706 ciss_kill_notify_thread(struct ciss_softc *sc) 3707 { 3708 3709 if (sc->ciss_notify_thread == NULL) 3710 return; 3711 3712 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT; 3713 wakeup(&sc->ciss_notify); 3714 tsleep(&sc->ciss_notify_thread, PUSER, "thtrm", 0); 3715 } 3716 3717 /************************************************************************ 3718 * Print a request. 3719 */ 3720 static void 3721 ciss_print_request(struct ciss_request *cr) 3722 { 3723 struct ciss_softc *sc; 3724 struct ciss_command *cc; 3725 int i; 3726 3727 sc = cr->cr_sc; 3728 cc = CISS_FIND_COMMAND(cr); 3729 3730 ciss_printf(sc, "REQUEST @ %p\n", cr); 3731 ciss_printf(sc, " data %p/%d tag %d flags %b\n", 3732 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags, 3733 "\20\1mapped\2sleep\3poll\4dataout\5datain\n"); 3734 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n", 3735 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag); 3736 switch(cc->header.address.mode.mode) { 3737 case CISS_HDR_ADDRESS_MODE_PERIPHERAL: 3738 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL: 3739 ciss_printf(sc, " physical bus %d target %d\n", 3740 cc->header.address.physical.bus, cc->header.address.physical.target); 3741 break; 3742 case CISS_HDR_ADDRESS_MODE_LOGICAL: 3743 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun); 3744 break; 3745 } 3746 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n", 3747 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" : 3748 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" : 3749 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??", 3750 cc->cdb.cdb_length, 3751 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" : 3752 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??", 3753 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" : 3754 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" : 3755 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" : 3756 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" : 3757 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??"); 3758 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " "); 3759 3760 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) { 3761 /* XXX print error info */ 3762 } else { 3763 /* since we don't use chained s/g, don't support it here */ 3764 for (i = 0; i < cc->header.sg_in_list; i++) { 3765 if ((i % 4) == 0) 3766 ciss_printf(sc, " "); 3767 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length); 3768 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1))) 3769 printf("\n"); 3770 } 3771 } 3772 } 3773 3774 /************************************************************************ 3775 * Print information about the status of a logical drive. 3776 */ 3777 static void 3778 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld) 3779 { 3780 int bus, target, i; 3781 3782 if (ld->cl_lstatus == NULL) { 3783 printf("does not exist\n"); 3784 return; 3785 } 3786 3787 /* print drive status */ 3788 switch(ld->cl_lstatus->status) { 3789 case CISS_LSTATUS_OK: 3790 printf("online\n"); 3791 break; 3792 case CISS_LSTATUS_INTERIM_RECOVERY: 3793 printf("in interim recovery mode\n"); 3794 break; 3795 case CISS_LSTATUS_READY_RECOVERY: 3796 printf("ready to begin recovery\n"); 3797 break; 3798 case CISS_LSTATUS_RECOVERING: 3799 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3800 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding); 3801 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n", 3802 bus, target, ld->cl_lstatus->blocks_to_recover); 3803 break; 3804 case CISS_LSTATUS_EXPANDING: 3805 printf("being expanded, %u blocks remaining\n", 3806 ld->cl_lstatus->blocks_to_recover); 3807 break; 3808 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3809 printf("queued for expansion\n"); 3810 break; 3811 case CISS_LSTATUS_FAILED: 3812 printf("queued for expansion\n"); 3813 break; 3814 case CISS_LSTATUS_WRONG_PDRIVE: 3815 printf("wrong physical drive inserted\n"); 3816 break; 3817 case CISS_LSTATUS_MISSING_PDRIVE: 3818 printf("missing a needed physical drive\n"); 3819 break; 3820 case CISS_LSTATUS_BECOMING_READY: 3821 printf("becoming ready\n"); 3822 break; 3823 } 3824 3825 /* print failed physical drives */ 3826 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) { 3827 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]); 3828 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]); 3829 if (bus == -1) 3830 continue; 3831 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target, 3832 ld->cl_lstatus->drive_failure_map[i]); 3833 } 3834 } 3835 3836 #ifdef CISS_DEBUG 3837 /************************************************************************ 3838 * Print information about the controller/driver. 3839 */ 3840 static void 3841 ciss_print_adapter(struct ciss_softc *sc) 3842 { 3843 int i, j; 3844 3845 ciss_printf(sc, "ADAPTER:\n"); 3846 for (i = 0; i < CISSQ_COUNT; i++) { 3847 ciss_printf(sc, "%s %d/%d\n", 3848 i == 0 ? "free" : 3849 i == 1 ? "busy" : "complete", 3850 sc->ciss_qstat[i].q_length, 3851 sc->ciss_qstat[i].q_max); 3852 } 3853 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests); 3854 ciss_printf(sc, "flags %b\n", sc->ciss_flags, 3855 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n"); 3856 3857 for (i = 0; i < sc->ciss_max_logical_bus; i++) { 3858 for (j = 0; j < CISS_MAX_LOGICAL; j++) { 3859 ciss_printf(sc, "LOGICAL DRIVE %d: ", i); 3860 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]); 3861 } 3862 } 3863 3864 /* XXX Should physical drives be printed out here? */ 3865 3866 for (i = 1; i < sc->ciss_max_requests; i++) 3867 ciss_print_request(sc->ciss_request + i); 3868 } 3869 3870 /* DDB hook */ 3871 static void 3872 ciss_print0(void) 3873 { 3874 struct ciss_softc *sc; 3875 3876 sc = devclass_get_softc(devclass_find("ciss"), 0); 3877 if (sc == NULL) { 3878 printf("no ciss controllers\n"); 3879 } else { 3880 ciss_print_adapter(sc); 3881 } 3882 } 3883 #endif 3884 3885 /************************************************************************ 3886 * Return a name for a logical drive status value. 3887 */ 3888 static const char * 3889 ciss_name_ldrive_status(int status) 3890 { 3891 switch (status) { 3892 case CISS_LSTATUS_OK: 3893 return("OK"); 3894 case CISS_LSTATUS_FAILED: 3895 return("failed"); 3896 case CISS_LSTATUS_NOT_CONFIGURED: 3897 return("not configured"); 3898 case CISS_LSTATUS_INTERIM_RECOVERY: 3899 return("interim recovery"); 3900 case CISS_LSTATUS_READY_RECOVERY: 3901 return("ready for recovery"); 3902 case CISS_LSTATUS_RECOVERING: 3903 return("recovering"); 3904 case CISS_LSTATUS_WRONG_PDRIVE: 3905 return("wrong physical drive inserted"); 3906 case CISS_LSTATUS_MISSING_PDRIVE: 3907 return("missing physical drive"); 3908 case CISS_LSTATUS_EXPANDING: 3909 return("expanding"); 3910 case CISS_LSTATUS_BECOMING_READY: 3911 return("becoming ready"); 3912 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3913 return("queued for expansion"); 3914 } 3915 return("unknown status"); 3916 } 3917 3918 /************************************************************************ 3919 * Return an online/offline/nonexistent value for a logical drive 3920 * status value. 3921 */ 3922 static int 3923 ciss_decode_ldrive_status(int status) 3924 { 3925 switch(status) { 3926 case CISS_LSTATUS_NOT_CONFIGURED: 3927 return(CISS_LD_NONEXISTENT); 3928 3929 case CISS_LSTATUS_OK: 3930 case CISS_LSTATUS_INTERIM_RECOVERY: 3931 case CISS_LSTATUS_READY_RECOVERY: 3932 case CISS_LSTATUS_RECOVERING: 3933 case CISS_LSTATUS_EXPANDING: 3934 case CISS_LSTATUS_QUEUED_FOR_EXPANSION: 3935 return(CISS_LD_ONLINE); 3936 3937 case CISS_LSTATUS_FAILED: 3938 case CISS_LSTATUS_WRONG_PDRIVE: 3939 case CISS_LSTATUS_MISSING_PDRIVE: 3940 case CISS_LSTATUS_BECOMING_READY: 3941 default: 3942 return(CISS_LD_OFFLINE); 3943 } 3944 } 3945 3946 3947 /************************************************************************ 3948 * Return a name for a logical drive's organisation. 3949 */ 3950 static const char * 3951 ciss_name_ldrive_org(int org) 3952 { 3953 switch(org) { 3954 case CISS_LDRIVE_RAID0: 3955 return("RAID 0"); 3956 case CISS_LDRIVE_RAID1: 3957 return("RAID 1"); 3958 case CISS_LDRIVE_RAID4: 3959 return("RAID 4"); 3960 case CISS_LDRIVE_RAID5: 3961 return("RAID 5"); 3962 case CISS_LDRIVE_RAID51: 3963 return("RAID 5+1"); 3964 case CISS_LDRIVE_RAIDADG: 3965 return("RAID ADG"); 3966 } 3967 return("unkown"); 3968 } 3969 3970 /************************************************************************ 3971 * Return a name for a command status value. 3972 */ 3973 static const char * 3974 ciss_name_command_status(int status) 3975 { 3976 switch(status) { 3977 case CISS_CMD_STATUS_SUCCESS: 3978 return("success"); 3979 case CISS_CMD_STATUS_TARGET_STATUS: 3980 return("target status"); 3981 case CISS_CMD_STATUS_DATA_UNDERRUN: 3982 return("data underrun"); 3983 case CISS_CMD_STATUS_DATA_OVERRUN: 3984 return("data overrun"); 3985 case CISS_CMD_STATUS_INVALID_COMMAND: 3986 return("invalid command"); 3987 case CISS_CMD_STATUS_PROTOCOL_ERROR: 3988 return("protocol error"); 3989 case CISS_CMD_STATUS_HARDWARE_ERROR: 3990 return("hardware error"); 3991 case CISS_CMD_STATUS_CONNECTION_LOST: 3992 return("connection lost"); 3993 case CISS_CMD_STATUS_ABORTED: 3994 return("aborted"); 3995 case CISS_CMD_STATUS_ABORT_FAILED: 3996 return("abort failed"); 3997 case CISS_CMD_STATUS_UNSOLICITED_ABORT: 3998 return("unsolicited abort"); 3999 case CISS_CMD_STATUS_TIMEOUT: 4000 return("timeout"); 4001 case CISS_CMD_STATUS_UNABORTABLE: 4002 return("unabortable"); 4003 } 4004 return("unknown status"); 4005 } 4006 4007 /************************************************************************ 4008 * Handle an open on the control device. 4009 */ 4010 static int 4011 ciss_open(struct cdev *dev, int flags, int fmt, d_thread_t *p) 4012 { 4013 struct ciss_softc *sc; 4014 4015 debug_called(1); 4016 4017 sc = (struct ciss_softc *)dev->si_drv1; 4018 4019 /* we might want to veto if someone already has us open */ 4020 4021 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN; 4022 return(0); 4023 } 4024 4025 /************************************************************************ 4026 * Handle the last close on the control device. 4027 */ 4028 static int 4029 ciss_close(struct cdev *dev, int flags, int fmt, d_thread_t *p) 4030 { 4031 struct ciss_softc *sc; 4032 4033 debug_called(1); 4034 4035 sc = (struct ciss_softc *)dev->si_drv1; 4036 4037 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN; 4038 return (0); 4039 } 4040 4041 /******************************************************************************** 4042 * Handle adapter-specific control operations. 4043 * 4044 * Note that the API here is compatible with the Linux driver, in order to 4045 * simplify the porting of Compaq's userland tools. 4046 */ 4047 static int 4048 ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, d_thread_t *p) 4049 { 4050 struct ciss_softc *sc; 4051 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr; 4052 #ifdef __amd64__ 4053 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr; 4054 IOCTL_Command_struct ioc_swab; 4055 #endif 4056 int error; 4057 4058 debug_called(1); 4059 4060 sc = (struct ciss_softc *)dev->si_drv1; 4061 error = 0; 4062 4063 switch(cmd) { 4064 case CCISS_GETPCIINFO: 4065 { 4066 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr; 4067 4068 pis->bus = pci_get_bus(sc->ciss_dev); 4069 pis->dev_fn = pci_get_slot(sc->ciss_dev); 4070 pis->board_id = pci_get_devid(sc->ciss_dev); 4071 4072 break; 4073 } 4074 4075 case CCISS_GETINTINFO: 4076 { 4077 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4078 4079 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay; 4080 cis->count = sc->ciss_cfg->interrupt_coalesce_count; 4081 4082 break; 4083 } 4084 4085 case CCISS_SETINTINFO: 4086 { 4087 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr; 4088 4089 if ((cis->delay == 0) && (cis->count == 0)) { 4090 error = EINVAL; 4091 break; 4092 } 4093 4094 /* 4095 * XXX apparently this is only safe if the controller is idle, 4096 * we should suspend it before doing this. 4097 */ 4098 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay; 4099 sc->ciss_cfg->interrupt_coalesce_count = cis->count; 4100 4101 if (ciss_update_config(sc)) 4102 error = EIO; 4103 4104 /* XXX resume the controller here */ 4105 break; 4106 } 4107 4108 case CCISS_GETNODENAME: 4109 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr, 4110 sizeof(NodeName_type)); 4111 break; 4112 4113 case CCISS_SETNODENAME: 4114 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name, 4115 sizeof(NodeName_type)); 4116 if (ciss_update_config(sc)) 4117 error = EIO; 4118 break; 4119 4120 case CCISS_GETHEARTBEAT: 4121 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat; 4122 break; 4123 4124 case CCISS_GETBUSTYPES: 4125 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types; 4126 break; 4127 4128 case CCISS_GETFIRMVER: 4129 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr, 4130 sizeof(FirmwareVer_type)); 4131 break; 4132 4133 case CCISS_GETDRIVERVER: 4134 *(DriverVer_type *)addr = CISS_DRIVER_VERSION; 4135 break; 4136 4137 case CCISS_REVALIDVOLS: 4138 /* 4139 * This is a bit ugly; to do it "right" we really need 4140 * to find any disks that have changed, kick CAM off them, 4141 * then rescan only these disks. It'd be nice if they 4142 * a) told us which disk(s) they were going to play with, 4143 * and b) which ones had arrived. 8( 4144 */ 4145 break; 4146 4147 #ifdef __amd64__ 4148 case CCISS_PASSTHRU32: 4149 ioc_swab.LUN_info = ioc32->LUN_info; 4150 ioc_swab.Request = ioc32->Request; 4151 ioc_swab.error_info = ioc32->error_info; 4152 ioc_swab.buf_size = ioc32->buf_size; 4153 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf; 4154 ioc = &ioc_swab; 4155 /* FALLTHROUGH */ 4156 #endif 4157 4158 case CCISS_PASSTHRU: 4159 error = ciss_user_command(sc, ioc); 4160 break; 4161 4162 default: 4163 debug(0, "unknown ioctl 0x%lx", cmd); 4164 4165 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO); 4166 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO); 4167 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO); 4168 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME); 4169 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME); 4170 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT); 4171 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES); 4172 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER); 4173 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER); 4174 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS); 4175 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU); 4176 4177 error = ENOIOCTL; 4178 break; 4179 } 4180 4181 return(error); 4182 } 4183