1 /*- 2 * Implementation of the Common Access Method Transport (XPT) layer. 3 * 4 * Copyright (c) 1997, 1998, 1999 Justin T. Gibbs. 5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/systm.h> 36 #include <sys/types.h> 37 #include <sys/malloc.h> 38 #include <sys/kernel.h> 39 #include <sys/time.h> 40 #include <sys/conf.h> 41 #include <sys/fcntl.h> 42 #include <sys/md5.h> 43 #include <sys/interrupt.h> 44 #include <sys/sbuf.h> 45 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 #include <sys/sysctl.h> 49 50 #ifdef PC98 51 #include <pc98/pc98/pc98_machdep.h> /* geometry translation */ 52 #endif 53 54 #include <cam/cam.h> 55 #include <cam/cam_ccb.h> 56 #include <cam/cam_periph.h> 57 #include <cam/cam_sim.h> 58 #include <cam/cam_xpt.h> 59 #include <cam/cam_xpt_sim.h> 60 #include <cam/cam_xpt_periph.h> 61 #include <cam/cam_debug.h> 62 63 #include <cam/scsi/scsi_all.h> 64 #include <cam/scsi/scsi_message.h> 65 #include <cam/scsi/scsi_pass.h> 66 #include "opt_cam.h" 67 68 /* Datastructures internal to the xpt layer */ 69 MALLOC_DEFINE(M_CAMXPT, "CAM XPT", "CAM XPT buffers"); 70 71 /* 72 * Definition of an async handler callback block. These are used to add 73 * SIMs and peripherals to the async callback lists. 74 */ 75 struct async_node { 76 SLIST_ENTRY(async_node) links; 77 u_int32_t event_enable; /* Async Event enables */ 78 void (*callback)(void *arg, u_int32_t code, 79 struct cam_path *path, void *args); 80 void *callback_arg; 81 }; 82 83 SLIST_HEAD(async_list, async_node); 84 SLIST_HEAD(periph_list, cam_periph); 85 static STAILQ_HEAD(highpowerlist, ccb_hdr) highpowerq; 86 87 /* 88 * This is the maximum number of high powered commands (e.g. start unit) 89 * that can be outstanding at a particular time. 90 */ 91 #ifndef CAM_MAX_HIGHPOWER 92 #define CAM_MAX_HIGHPOWER 4 93 #endif 94 95 /* number of high powered commands that can go through right now */ 96 static int num_highpower = CAM_MAX_HIGHPOWER; 97 98 /* 99 * Structure for queueing a device in a run queue. 100 * There is one run queue for allocating new ccbs, 101 * and another for sending ccbs to the controller. 102 */ 103 struct cam_ed_qinfo { 104 cam_pinfo pinfo; 105 struct cam_ed *device; 106 }; 107 108 /* 109 * The CAM EDT (Existing Device Table) contains the device information for 110 * all devices for all busses in the system. The table contains a 111 * cam_ed structure for each device on the bus. 112 */ 113 struct cam_ed { 114 TAILQ_ENTRY(cam_ed) links; 115 struct cam_ed_qinfo alloc_ccb_entry; 116 struct cam_ed_qinfo send_ccb_entry; 117 struct cam_et *target; 118 lun_id_t lun_id; 119 struct camq drvq; /* 120 * Queue of type drivers wanting to do 121 * work on this device. 122 */ 123 struct cam_ccbq ccbq; /* Queue of pending ccbs */ 124 struct async_list asyncs; /* Async callback info for this B/T/L */ 125 struct periph_list periphs; /* All attached devices */ 126 u_int generation; /* Generation number */ 127 struct cam_periph *owner; /* Peripheral driver's ownership tag */ 128 struct xpt_quirk_entry *quirk; /* Oddities about this device */ 129 /* Storage for the inquiry data */ 130 #ifdef CAM_NEW_TRAN_CODE 131 cam_proto protocol; 132 u_int protocol_version; 133 cam_xport transport; 134 u_int transport_version; 135 #endif /* CAM_NEW_TRAN_CODE */ 136 struct scsi_inquiry_data inq_data; 137 u_int8_t inq_flags; /* 138 * Current settings for inquiry flags. 139 * This allows us to override settings 140 * like disconnection and tagged 141 * queuing for a device. 142 */ 143 u_int8_t queue_flags; /* Queue flags from the control page */ 144 u_int8_t serial_num_len; 145 u_int8_t *serial_num; 146 u_int32_t qfrozen_cnt; 147 u_int32_t flags; 148 #define CAM_DEV_UNCONFIGURED 0x01 149 #define CAM_DEV_REL_TIMEOUT_PENDING 0x02 150 #define CAM_DEV_REL_ON_COMPLETE 0x04 151 #define CAM_DEV_REL_ON_QUEUE_EMPTY 0x08 152 #define CAM_DEV_RESIZE_QUEUE_NEEDED 0x10 153 #define CAM_DEV_TAG_AFTER_COUNT 0x20 154 #define CAM_DEV_INQUIRY_DATA_VALID 0x40 155 u_int32_t tag_delay_count; 156 #define CAM_TAG_DELAY_COUNT 5 157 u_int32_t tag_saved_openings; 158 u_int32_t refcount; 159 struct callout_handle c_handle; 160 }; 161 162 /* 163 * Each target is represented by an ET (Existing Target). These 164 * entries are created when a target is successfully probed with an 165 * identify, and removed when a device fails to respond after a number 166 * of retries, or a bus rescan finds the device missing. 167 */ 168 struct cam_et { 169 TAILQ_HEAD(, cam_ed) ed_entries; 170 TAILQ_ENTRY(cam_et) links; 171 struct cam_eb *bus; 172 target_id_t target_id; 173 u_int32_t refcount; 174 u_int generation; 175 struct timeval last_reset; 176 }; 177 178 /* 179 * Each bus is represented by an EB (Existing Bus). These entries 180 * are created by calls to xpt_bus_register and deleted by calls to 181 * xpt_bus_deregister. 182 */ 183 struct cam_eb { 184 TAILQ_HEAD(, cam_et) et_entries; 185 TAILQ_ENTRY(cam_eb) links; 186 path_id_t path_id; 187 struct cam_sim *sim; 188 struct timeval last_reset; 189 u_int32_t flags; 190 #define CAM_EB_RUNQ_SCHEDULED 0x01 191 u_int32_t refcount; 192 u_int generation; 193 }; 194 195 struct cam_path { 196 struct cam_periph *periph; 197 struct cam_eb *bus; 198 struct cam_et *target; 199 struct cam_ed *device; 200 }; 201 202 struct xpt_quirk_entry { 203 struct scsi_inquiry_pattern inq_pat; 204 u_int8_t quirks; 205 #define CAM_QUIRK_NOLUNS 0x01 206 #define CAM_QUIRK_NOSERIAL 0x02 207 #define CAM_QUIRK_HILUNS 0x04 208 #define CAM_QUIRK_NOHILUNS 0x08 209 u_int mintags; 210 u_int maxtags; 211 }; 212 213 static int cam_srch_hi = 0; 214 TUNABLE_INT("kern.cam.cam_srch_hi", &cam_srch_hi); 215 static int sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS); 216 SYSCTL_PROC(_kern_cam, OID_AUTO, cam_srch_hi, CTLTYPE_INT|CTLFLAG_RW, 0, 0, 217 sysctl_cam_search_luns, "I", 218 "allow search above LUN 7 for SCSI3 and greater devices"); 219 220 #define CAM_SCSI2_MAXLUN 8 221 /* 222 * If we're not quirked to search <= the first 8 luns 223 * and we are either quirked to search above lun 8, 224 * or we're > SCSI-2 and we've enabled hilun searching, 225 * or we're > SCSI-2 and the last lun was a success, 226 * we can look for luns above lun 8. 227 */ 228 #define CAN_SRCH_HI_SPARSE(dv) \ 229 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \ 230 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \ 231 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2 && cam_srch_hi))) 232 233 #define CAN_SRCH_HI_DENSE(dv) \ 234 (((dv->quirk->quirks & CAM_QUIRK_NOHILUNS) == 0) \ 235 && ((dv->quirk->quirks & CAM_QUIRK_HILUNS) \ 236 || (SID_ANSI_REV(&dv->inq_data) > SCSI_REV_2))) 237 238 typedef enum { 239 XPT_FLAG_OPEN = 0x01 240 } xpt_flags; 241 242 struct xpt_softc { 243 xpt_flags flags; 244 u_int32_t generation; 245 }; 246 247 static const char quantum[] = "QUANTUM"; 248 static const char sony[] = "SONY"; 249 static const char west_digital[] = "WDIGTL"; 250 static const char samsung[] = "SAMSUNG"; 251 static const char seagate[] = "SEAGATE"; 252 static const char microp[] = "MICROP"; 253 254 static struct xpt_quirk_entry xpt_quirk_table[] = 255 { 256 { 257 /* Reports QUEUE FULL for temporary resource shortages */ 258 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP39100*", "*" }, 259 /*quirks*/0, /*mintags*/24, /*maxtags*/32 260 }, 261 { 262 /* Reports QUEUE FULL for temporary resource shortages */ 263 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP34550*", "*" }, 264 /*quirks*/0, /*mintags*/24, /*maxtags*/32 265 }, 266 { 267 /* Reports QUEUE FULL for temporary resource shortages */ 268 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "XP32275*", "*" }, 269 /*quirks*/0, /*mintags*/24, /*maxtags*/32 270 }, 271 { 272 /* Broken tagged queuing drive */ 273 { T_DIRECT, SIP_MEDIA_FIXED, microp, "4421-07*", "*" }, 274 /*quirks*/0, /*mintags*/0, /*maxtags*/0 275 }, 276 { 277 /* Broken tagged queuing drive */ 278 { T_DIRECT, SIP_MEDIA_FIXED, "HP", "C372*", "*" }, 279 /*quirks*/0, /*mintags*/0, /*maxtags*/0 280 }, 281 { 282 /* Broken tagged queuing drive */ 283 { T_DIRECT, SIP_MEDIA_FIXED, microp, "3391*", "x43h" }, 284 /*quirks*/0, /*mintags*/0, /*maxtags*/0 285 }, 286 { 287 /* 288 * Unfortunately, the Quantum Atlas III has the same 289 * problem as the Atlas II drives above. 290 * Reported by: "Johan Granlund" <johan@granlund.nu> 291 * 292 * For future reference, the drive with the problem was: 293 * QUANTUM QM39100TD-SW N1B0 294 * 295 * It's possible that Quantum will fix the problem in later 296 * firmware revisions. If that happens, the quirk entry 297 * will need to be made specific to the firmware revisions 298 * with the problem. 299 * 300 */ 301 /* Reports QUEUE FULL for temporary resource shortages */ 302 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM39100*", "*" }, 303 /*quirks*/0, /*mintags*/24, /*maxtags*/32 304 }, 305 { 306 /* 307 * 18 Gig Atlas III, same problem as the 9G version. 308 * Reported by: Andre Albsmeier 309 * <andre.albsmeier@mchp.siemens.de> 310 * 311 * For future reference, the drive with the problem was: 312 * QUANTUM QM318000TD-S N491 313 */ 314 /* Reports QUEUE FULL for temporary resource shortages */ 315 { T_DIRECT, SIP_MEDIA_FIXED, quantum, "QM318000*", "*" }, 316 /*quirks*/0, /*mintags*/24, /*maxtags*/32 317 }, 318 { 319 /* 320 * Broken tagged queuing drive 321 * Reported by: Bret Ford <bford@uop.cs.uop.edu> 322 * and: Martin Renters <martin@tdc.on.ca> 323 */ 324 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST410800*", "71*" }, 325 /*quirks*/0, /*mintags*/0, /*maxtags*/0 326 }, 327 /* 328 * The Seagate Medalist Pro drives have very poor write 329 * performance with anything more than 2 tags. 330 * 331 * Reported by: Paul van der Zwan <paulz@trantor.xs4all.nl> 332 * Drive: <SEAGATE ST36530N 1444> 333 * 334 * Reported by: Jeremy Lea <reg@shale.csir.co.za> 335 * Drive: <SEAGATE ST34520W 1281> 336 * 337 * No one has actually reported that the 9G version 338 * (ST39140*) of the Medalist Pro has the same problem, but 339 * we're assuming that it does because the 4G and 6.5G 340 * versions of the drive are broken. 341 */ 342 { 343 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST34520*", "*"}, 344 /*quirks*/0, /*mintags*/2, /*maxtags*/2 345 }, 346 { 347 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST36530*", "*"}, 348 /*quirks*/0, /*mintags*/2, /*maxtags*/2 349 }, 350 { 351 { T_DIRECT, SIP_MEDIA_FIXED, seagate, "ST39140*", "*"}, 352 /*quirks*/0, /*mintags*/2, /*maxtags*/2 353 }, 354 { 355 /* 356 * Slow when tagged queueing is enabled. Write performance 357 * steadily drops off with more and more concurrent 358 * transactions. Best sequential write performance with 359 * tagged queueing turned off and write caching turned on. 360 * 361 * PR: kern/10398 362 * Submitted by: Hideaki Okada <hokada@isl.melco.co.jp> 363 * Drive: DCAS-34330 w/ "S65A" firmware. 364 * 365 * The drive with the problem had the "S65A" firmware 366 * revision, and has also been reported (by Stephen J. 367 * Roznowski <sjr@home.net>) for a drive with the "S61A" 368 * firmware revision. 369 * 370 * Although no one has reported problems with the 2 gig 371 * version of the DCAS drive, the assumption is that it 372 * has the same problems as the 4 gig version. Therefore 373 * this quirk entries disables tagged queueing for all 374 * DCAS drives. 375 */ 376 { T_DIRECT, SIP_MEDIA_FIXED, "IBM", "DCAS*", "*" }, 377 /*quirks*/0, /*mintags*/0, /*maxtags*/0 378 }, 379 { 380 /* Broken tagged queuing drive */ 381 { T_DIRECT, SIP_MEDIA_REMOVABLE, "iomega", "jaz*", "*" }, 382 /*quirks*/0, /*mintags*/0, /*maxtags*/0 383 }, 384 { 385 /* Broken tagged queuing drive */ 386 { T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CFP2107*", "*" }, 387 /*quirks*/0, /*mintags*/0, /*maxtags*/0 388 }, 389 { 390 /* Does not support other than LUN 0 */ 391 { T_DIRECT, SIP_MEDIA_FIXED, "VMware*", "*", "*" }, 392 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 393 }, 394 { 395 /* 396 * Broken tagged queuing drive. 397 * Submitted by: 398 * NAKAJI Hiroyuki <nakaji@zeisei.dpri.kyoto-u.ac.jp> 399 * in PR kern/9535 400 */ 401 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN34324U*", "*" }, 402 /*quirks*/0, /*mintags*/0, /*maxtags*/0 403 }, 404 { 405 /* 406 * Slow when tagged queueing is enabled. (1.5MB/sec versus 407 * 8MB/sec.) 408 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> 409 * Best performance with these drives is achieved with 410 * tagged queueing turned off, and write caching turned on. 411 */ 412 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "WDE*", "*" }, 413 /*quirks*/0, /*mintags*/0, /*maxtags*/0 414 }, 415 { 416 /* 417 * Slow when tagged queueing is enabled. (1.5MB/sec versus 418 * 8MB/sec.) 419 * Submitted by: Andrew Gallatin <gallatin@cs.duke.edu> 420 * Best performance with these drives is achieved with 421 * tagged queueing turned off, and write caching turned on. 422 */ 423 { T_DIRECT, SIP_MEDIA_FIXED, west_digital, "ENTERPRISE", "*" }, 424 /*quirks*/0, /*mintags*/0, /*maxtags*/0 425 }, 426 { 427 /* 428 * Doesn't handle queue full condition correctly, 429 * so we need to limit maxtags to what the device 430 * can handle instead of determining this automatically. 431 */ 432 { T_DIRECT, SIP_MEDIA_FIXED, samsung, "WN321010S*", "*" }, 433 /*quirks*/0, /*mintags*/2, /*maxtags*/32 434 }, 435 { 436 /* Really only one LUN */ 437 { T_ENCLOSURE, SIP_MEDIA_FIXED, "SUN", "SENA", "*" }, 438 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 439 }, 440 { 441 /* I can't believe we need a quirk for DPT volumes. */ 442 { T_ANY, SIP_MEDIA_FIXED|SIP_MEDIA_REMOVABLE, "DPT", "*", "*" }, 443 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, 444 /*mintags*/0, /*maxtags*/255 445 }, 446 { 447 /* 448 * Many Sony CDROM drives don't like multi-LUN probing. 449 */ 450 { T_CDROM, SIP_MEDIA_REMOVABLE, sony, "CD-ROM CDU*", "*" }, 451 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 452 }, 453 { 454 /* 455 * This drive doesn't like multiple LUN probing. 456 * Submitted by: Parag Patel <parag@cgt.com> 457 */ 458 { T_WORM, SIP_MEDIA_REMOVABLE, sony, "CD-R CDU9*", "*" }, 459 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 460 }, 461 { 462 { T_WORM, SIP_MEDIA_REMOVABLE, "YAMAHA", "CDR100*", "*" }, 463 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 464 }, 465 { 466 /* 467 * The 8200 doesn't like multi-lun probing, and probably 468 * don't like serial number requests either. 469 */ 470 { 471 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE", 472 "EXB-8200*", "*" 473 }, 474 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 475 }, 476 { 477 /* 478 * Let's try the same as above, but for a drive that says 479 * it's an IPL-6860 but is actually an EXB 8200. 480 */ 481 { 482 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "EXABYTE", 483 "IPL-6860*", "*" 484 }, 485 CAM_QUIRK_NOSERIAL|CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 486 }, 487 { 488 /* 489 * These Hitachi drives don't like multi-lun probing. 490 * The PR submitter has a DK319H, but says that the Linux 491 * kernel has a similar work-around for the DK312 and DK314, 492 * so all DK31* drives are quirked here. 493 * PR: misc/18793 494 * Submitted by: Paul Haddad <paul@pth.com> 495 */ 496 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK31*", "*" }, 497 CAM_QUIRK_NOLUNS, /*mintags*/2, /*maxtags*/255 498 }, 499 { 500 /* 501 * The Hitachi CJ series with J8A8 firmware apparantly has 502 * problems with tagged commands. 503 * PR: 23536 504 * Reported by: amagai@nue.org 505 */ 506 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "DK32CJ*", "J8A8" }, 507 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 508 }, 509 { 510 /* 511 * These are the large storage arrays. 512 * Submitted by: William Carrel <william.carrel@infospace.com> 513 */ 514 { T_DIRECT, SIP_MEDIA_FIXED, "HITACHI", "OPEN*", "*" }, 515 CAM_QUIRK_HILUNS, 2, 1024 516 }, 517 { 518 /* 519 * This old revision of the TDC3600 is also SCSI-1, and 520 * hangs upon serial number probing. 521 */ 522 { 523 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 524 " TDC 3600", "U07:" 525 }, 526 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0 527 }, 528 { 529 /* 530 * Maxtor Personal Storage 3000XT (Firewire) 531 * hangs upon serial number probing. 532 */ 533 { 534 T_DIRECT, SIP_MEDIA_FIXED, "Maxtor", 535 "1394 storage", "*" 536 }, 537 CAM_QUIRK_NOSERIAL, /*mintags*/0, /*maxtags*/0 538 }, 539 { 540 /* 541 * Would repond to all LUNs if asked for. 542 */ 543 { 544 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "CALIPER", 545 "CP150", "*" 546 }, 547 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 548 }, 549 { 550 /* 551 * Would repond to all LUNs if asked for. 552 */ 553 { 554 T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 555 "96X2*", "*" 556 }, 557 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 558 }, 559 { 560 /* Submitted by: Matthew Dodd <winter@jurai.net> */ 561 { T_PROCESSOR, SIP_MEDIA_FIXED, "Cabletrn", "EA41*", "*" }, 562 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 563 }, 564 { 565 /* Submitted by: Matthew Dodd <winter@jurai.net> */ 566 { T_PROCESSOR, SIP_MEDIA_FIXED, "CABLETRN", "EA41*", "*" }, 567 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 568 }, 569 { 570 /* TeraSolutions special settings for TRC-22 RAID */ 571 { T_DIRECT, SIP_MEDIA_FIXED, "TERASOLU", "TRC-22", "*" }, 572 /*quirks*/0, /*mintags*/55, /*maxtags*/255 573 }, 574 { 575 /* Veritas Storage Appliance */ 576 { T_DIRECT, SIP_MEDIA_FIXED, "VERITAS", "*", "*" }, 577 CAM_QUIRK_HILUNS, /*mintags*/2, /*maxtags*/1024 578 }, 579 { 580 /* 581 * Would respond to all LUNs. Device type and removable 582 * flag are jumper-selectable. 583 */ 584 { T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, "MaxOptix", 585 "Tahiti 1", "*" 586 }, 587 CAM_QUIRK_NOLUNS, /*mintags*/0, /*maxtags*/0 588 }, 589 { 590 /* EasyRAID E5A aka. areca ARC-6010 */ 591 { T_DIRECT, SIP_MEDIA_FIXED, "easyRAID", "*", "*" }, 592 CAM_QUIRK_NOHILUNS, /*mintags*/2, /*maxtags*/255 593 }, 594 { 595 /* Default tagged queuing parameters for all devices */ 596 { 597 T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED, 598 /*vendor*/"*", /*product*/"*", /*revision*/"*" 599 }, 600 /*quirks*/0, /*mintags*/2, /*maxtags*/255 601 }, 602 }; 603 604 static const int xpt_quirk_table_size = 605 sizeof(xpt_quirk_table) / sizeof(*xpt_quirk_table); 606 607 typedef enum { 608 DM_RET_COPY = 0x01, 609 DM_RET_FLAG_MASK = 0x0f, 610 DM_RET_NONE = 0x00, 611 DM_RET_STOP = 0x10, 612 DM_RET_DESCEND = 0x20, 613 DM_RET_ERROR = 0x30, 614 DM_RET_ACTION_MASK = 0xf0 615 } dev_match_ret; 616 617 typedef enum { 618 XPT_DEPTH_BUS, 619 XPT_DEPTH_TARGET, 620 XPT_DEPTH_DEVICE, 621 XPT_DEPTH_PERIPH 622 } xpt_traverse_depth; 623 624 struct xpt_traverse_config { 625 xpt_traverse_depth depth; 626 void *tr_func; 627 void *tr_arg; 628 }; 629 630 typedef int xpt_busfunc_t (struct cam_eb *bus, void *arg); 631 typedef int xpt_targetfunc_t (struct cam_et *target, void *arg); 632 typedef int xpt_devicefunc_t (struct cam_ed *device, void *arg); 633 typedef int xpt_periphfunc_t (struct cam_periph *periph, void *arg); 634 typedef int xpt_pdrvfunc_t (struct periph_driver **pdrv, void *arg); 635 636 /* Transport layer configuration information */ 637 static struct xpt_softc xsoftc; 638 639 /* Queues for our software interrupt handler */ 640 typedef TAILQ_HEAD(cam_isrq, ccb_hdr) cam_isrq_t; 641 static cam_isrq_t cam_bioq; 642 static struct mtx cam_bioq_lock; 643 644 /* "Pool" of inactive ccbs managed by xpt_alloc_ccb and xpt_free_ccb */ 645 static SLIST_HEAD(,ccb_hdr) ccb_freeq; 646 static u_int xpt_max_ccbs; /* 647 * Maximum size of ccb pool. Modified as 648 * devices are added/removed or have their 649 * opening counts changed. 650 */ 651 static u_int xpt_ccb_count; /* Current count of allocated ccbs */ 652 653 struct cam_periph *xpt_periph; 654 655 static periph_init_t xpt_periph_init; 656 657 static periph_init_t probe_periph_init; 658 659 static struct periph_driver xpt_driver = 660 { 661 xpt_periph_init, "xpt", 662 TAILQ_HEAD_INITIALIZER(xpt_driver.units) 663 }; 664 665 static struct periph_driver probe_driver = 666 { 667 probe_periph_init, "probe", 668 TAILQ_HEAD_INITIALIZER(probe_driver.units) 669 }; 670 671 PERIPHDRIVER_DECLARE(xpt, xpt_driver); 672 PERIPHDRIVER_DECLARE(probe, probe_driver); 673 674 675 static d_open_t xptopen; 676 static d_close_t xptclose; 677 static d_ioctl_t xptioctl; 678 679 static struct cdevsw xpt_cdevsw = { 680 .d_version = D_VERSION, 681 .d_flags = D_NEEDGIANT, 682 .d_open = xptopen, 683 .d_close = xptclose, 684 .d_ioctl = xptioctl, 685 .d_name = "xpt", 686 }; 687 688 static struct intr_config_hook *xpt_config_hook; 689 690 static void dead_sim_action(struct cam_sim *sim, union ccb *ccb); 691 static void dead_sim_poll(struct cam_sim *sim); 692 693 /* Dummy SIM that is used when the real one has gone. */ 694 static struct cam_sim cam_dead_sim = { 695 .sim_action = dead_sim_action, 696 .sim_poll = dead_sim_poll, 697 .sim_name = "dead_sim", 698 }; 699 700 #define SIM_DEAD(sim) ((sim) == &cam_dead_sim) 701 702 /* Registered busses */ 703 static TAILQ_HEAD(,cam_eb) xpt_busses; 704 static u_int bus_generation; 705 706 /* Storage for debugging datastructures */ 707 #ifdef CAMDEBUG 708 struct cam_path *cam_dpath; 709 u_int32_t cam_dflags; 710 u_int32_t cam_debug_delay; 711 #endif 712 713 /* Pointers to software interrupt handlers */ 714 static void *cambio_ih; 715 716 #if defined(CAM_DEBUG_FLAGS) && !defined(CAMDEBUG) 717 #error "You must have options CAMDEBUG to use options CAM_DEBUG_FLAGS" 718 #endif 719 720 /* 721 * In order to enable the CAM_DEBUG_* options, the user must have CAMDEBUG 722 * enabled. Also, the user must have either none, or all of CAM_DEBUG_BUS, 723 * CAM_DEBUG_TARGET, and CAM_DEBUG_LUN specified. 724 */ 725 #if defined(CAM_DEBUG_BUS) || defined(CAM_DEBUG_TARGET) \ 726 || defined(CAM_DEBUG_LUN) 727 #ifdef CAMDEBUG 728 #if !defined(CAM_DEBUG_BUS) || !defined(CAM_DEBUG_TARGET) \ 729 || !defined(CAM_DEBUG_LUN) 730 #error "You must define all or none of CAM_DEBUG_BUS, CAM_DEBUG_TARGET \ 731 and CAM_DEBUG_LUN" 732 #endif /* !CAM_DEBUG_BUS || !CAM_DEBUG_TARGET || !CAM_DEBUG_LUN */ 733 #else /* !CAMDEBUG */ 734 #error "You must use options CAMDEBUG if you use the CAM_DEBUG_* options" 735 #endif /* CAMDEBUG */ 736 #endif /* CAM_DEBUG_BUS || CAM_DEBUG_TARGET || CAM_DEBUG_LUN */ 737 738 /* Our boot-time initialization hook */ 739 static int cam_module_event_handler(module_t, int /*modeventtype_t*/, void *); 740 741 static moduledata_t cam_moduledata = { 742 "cam", 743 cam_module_event_handler, 744 NULL 745 }; 746 747 static void xpt_init(void *); 748 749 DECLARE_MODULE(cam, cam_moduledata, SI_SUB_CONFIGURE, SI_ORDER_SECOND); 750 MODULE_VERSION(cam, 1); 751 752 753 static cam_status xpt_compile_path(struct cam_path *new_path, 754 struct cam_periph *perph, 755 path_id_t path_id, 756 target_id_t target_id, 757 lun_id_t lun_id); 758 759 static void xpt_release_path(struct cam_path *path); 760 761 static void xpt_async_bcast(struct async_list *async_head, 762 u_int32_t async_code, 763 struct cam_path *path, 764 void *async_arg); 765 static void xpt_dev_async(u_int32_t async_code, 766 struct cam_eb *bus, 767 struct cam_et *target, 768 struct cam_ed *device, 769 void *async_arg); 770 static path_id_t xptnextfreepathid(void); 771 static path_id_t xptpathid(const char *sim_name, int sim_unit, int sim_bus); 772 static union ccb *xpt_get_ccb(struct cam_ed *device); 773 static int xpt_schedule_dev(struct camq *queue, cam_pinfo *dev_pinfo, 774 u_int32_t new_priority); 775 static void xpt_run_dev_allocq(struct cam_eb *bus); 776 static void xpt_run_dev_sendq(struct cam_eb *bus); 777 static timeout_t xpt_release_devq_timeout; 778 static timeout_t xpt_release_simq_timeout; 779 static void xpt_release_bus(struct cam_eb *bus); 780 static void xpt_release_devq_device(struct cam_ed *dev, u_int count, 781 int run_queue); 782 static struct cam_et* 783 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id); 784 static void xpt_release_target(struct cam_eb *bus, struct cam_et *target); 785 static struct cam_ed* 786 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, 787 lun_id_t lun_id); 788 static void xpt_release_device(struct cam_eb *bus, struct cam_et *target, 789 struct cam_ed *device); 790 static u_int32_t xpt_dev_ccbq_resize(struct cam_path *path, int newopenings); 791 static struct cam_eb* 792 xpt_find_bus(path_id_t path_id); 793 static struct cam_et* 794 xpt_find_target(struct cam_eb *bus, target_id_t target_id); 795 static struct cam_ed* 796 xpt_find_device(struct cam_et *target, lun_id_t lun_id); 797 static void xpt_scan_bus(struct cam_periph *periph, union ccb *ccb); 798 static void xpt_scan_lun(struct cam_periph *periph, 799 struct cam_path *path, cam_flags flags, 800 union ccb *ccb); 801 static void xptscandone(struct cam_periph *periph, union ccb *done_ccb); 802 static xpt_busfunc_t xptconfigbuscountfunc; 803 static xpt_busfunc_t xptconfigfunc; 804 static void xpt_config(void *arg); 805 static xpt_devicefunc_t xptpassannouncefunc; 806 static void xpt_finishconfig(struct cam_periph *periph, union ccb *ccb); 807 static void xptaction(struct cam_sim *sim, union ccb *work_ccb); 808 static void xptpoll(struct cam_sim *sim); 809 static void camisr(void *); 810 #if 0 811 static void xptstart(struct cam_periph *periph, union ccb *work_ccb); 812 static void xptasync(struct cam_periph *periph, 813 u_int32_t code, cam_path *path); 814 #endif 815 static dev_match_ret xptbusmatch(struct dev_match_pattern *patterns, 816 u_int num_patterns, struct cam_eb *bus); 817 static dev_match_ret xptdevicematch(struct dev_match_pattern *patterns, 818 u_int num_patterns, 819 struct cam_ed *device); 820 static dev_match_ret xptperiphmatch(struct dev_match_pattern *patterns, 821 u_int num_patterns, 822 struct cam_periph *periph); 823 static xpt_busfunc_t xptedtbusfunc; 824 static xpt_targetfunc_t xptedttargetfunc; 825 static xpt_devicefunc_t xptedtdevicefunc; 826 static xpt_periphfunc_t xptedtperiphfunc; 827 static xpt_pdrvfunc_t xptplistpdrvfunc; 828 static xpt_periphfunc_t xptplistperiphfunc; 829 static int xptedtmatch(struct ccb_dev_match *cdm); 830 static int xptperiphlistmatch(struct ccb_dev_match *cdm); 831 static int xptbustraverse(struct cam_eb *start_bus, 832 xpt_busfunc_t *tr_func, void *arg); 833 static int xpttargettraverse(struct cam_eb *bus, 834 struct cam_et *start_target, 835 xpt_targetfunc_t *tr_func, void *arg); 836 static int xptdevicetraverse(struct cam_et *target, 837 struct cam_ed *start_device, 838 xpt_devicefunc_t *tr_func, void *arg); 839 static int xptperiphtraverse(struct cam_ed *device, 840 struct cam_periph *start_periph, 841 xpt_periphfunc_t *tr_func, void *arg); 842 static int xptpdrvtraverse(struct periph_driver **start_pdrv, 843 xpt_pdrvfunc_t *tr_func, void *arg); 844 static int xptpdperiphtraverse(struct periph_driver **pdrv, 845 struct cam_periph *start_periph, 846 xpt_periphfunc_t *tr_func, 847 void *arg); 848 static xpt_busfunc_t xptdefbusfunc; 849 static xpt_targetfunc_t xptdeftargetfunc; 850 static xpt_devicefunc_t xptdefdevicefunc; 851 static xpt_periphfunc_t xptdefperiphfunc; 852 static int xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg); 853 #ifdef notusedyet 854 static int xpt_for_all_targets(xpt_targetfunc_t *tr_func, 855 void *arg); 856 #endif 857 static int xpt_for_all_devices(xpt_devicefunc_t *tr_func, 858 void *arg); 859 #ifdef notusedyet 860 static int xpt_for_all_periphs(xpt_periphfunc_t *tr_func, 861 void *arg); 862 #endif 863 static xpt_devicefunc_t xptsetasyncfunc; 864 static xpt_busfunc_t xptsetasyncbusfunc; 865 static cam_status xptregister(struct cam_periph *periph, 866 void *arg); 867 static cam_status proberegister(struct cam_periph *periph, 868 void *arg); 869 static void probeschedule(struct cam_periph *probe_periph); 870 static void probestart(struct cam_periph *periph, union ccb *start_ccb); 871 static void proberequestdefaultnegotiation(struct cam_periph *periph); 872 static void probedone(struct cam_periph *periph, union ccb *done_ccb); 873 static void probecleanup(struct cam_periph *periph); 874 static void xpt_find_quirk(struct cam_ed *device); 875 #ifdef CAM_NEW_TRAN_CODE 876 static void xpt_devise_transport(struct cam_path *path); 877 #endif /* CAM_NEW_TRAN_CODE */ 878 static void xpt_set_transfer_settings(struct ccb_trans_settings *cts, 879 struct cam_ed *device, 880 int async_update); 881 static void xpt_toggle_tags(struct cam_path *path); 882 static void xpt_start_tags(struct cam_path *path); 883 static __inline int xpt_schedule_dev_allocq(struct cam_eb *bus, 884 struct cam_ed *dev); 885 static __inline int xpt_schedule_dev_sendq(struct cam_eb *bus, 886 struct cam_ed *dev); 887 static __inline int periph_is_queued(struct cam_periph *periph); 888 static __inline int device_is_alloc_queued(struct cam_ed *device); 889 static __inline int device_is_send_queued(struct cam_ed *device); 890 static __inline int dev_allocq_is_runnable(struct cam_devq *devq); 891 892 static __inline int 893 xpt_schedule_dev_allocq(struct cam_eb *bus, struct cam_ed *dev) 894 { 895 int retval; 896 897 if (dev->ccbq.devq_openings > 0) { 898 if ((dev->flags & CAM_DEV_RESIZE_QUEUE_NEEDED) != 0) { 899 cam_ccbq_resize(&dev->ccbq, 900 dev->ccbq.dev_openings 901 + dev->ccbq.dev_active); 902 dev->flags &= ~CAM_DEV_RESIZE_QUEUE_NEEDED; 903 } 904 /* 905 * The priority of a device waiting for CCB resources 906 * is that of the the highest priority peripheral driver 907 * enqueued. 908 */ 909 retval = xpt_schedule_dev(&bus->sim->devq->alloc_queue, 910 &dev->alloc_ccb_entry.pinfo, 911 CAMQ_GET_HEAD(&dev->drvq)->priority); 912 } else { 913 retval = 0; 914 } 915 916 return (retval); 917 } 918 919 static __inline int 920 xpt_schedule_dev_sendq(struct cam_eb *bus, struct cam_ed *dev) 921 { 922 int retval; 923 924 if (dev->ccbq.dev_openings > 0) { 925 /* 926 * The priority of a device waiting for controller 927 * resources is that of the the highest priority CCB 928 * enqueued. 929 */ 930 retval = 931 xpt_schedule_dev(&bus->sim->devq->send_queue, 932 &dev->send_ccb_entry.pinfo, 933 CAMQ_GET_HEAD(&dev->ccbq.queue)->priority); 934 } else { 935 retval = 0; 936 } 937 return (retval); 938 } 939 940 static __inline int 941 periph_is_queued(struct cam_periph *periph) 942 { 943 return (periph->pinfo.index != CAM_UNQUEUED_INDEX); 944 } 945 946 static __inline int 947 device_is_alloc_queued(struct cam_ed *device) 948 { 949 return (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX); 950 } 951 952 static __inline int 953 device_is_send_queued(struct cam_ed *device) 954 { 955 return (device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX); 956 } 957 958 static __inline int 959 dev_allocq_is_runnable(struct cam_devq *devq) 960 { 961 /* 962 * Have work to do. 963 * Have space to do more work. 964 * Allowed to do work. 965 */ 966 return ((devq->alloc_queue.qfrozen_cnt == 0) 967 && (devq->alloc_queue.entries > 0) 968 && (devq->alloc_openings > 0)); 969 } 970 971 static void 972 xpt_periph_init() 973 { 974 make_dev(&xpt_cdevsw, 0, UID_ROOT, GID_OPERATOR, 0600, "xpt0"); 975 } 976 977 static void 978 probe_periph_init() 979 { 980 } 981 982 983 static void 984 xptdone(struct cam_periph *periph, union ccb *done_ccb) 985 { 986 /* Caller will release the CCB */ 987 wakeup(&done_ccb->ccb_h.cbfcnp); 988 } 989 990 static int 991 xptopen(struct cdev *dev, int flags, int fmt, struct thread *td) 992 { 993 int unit; 994 995 unit = minor(dev) & 0xff; 996 997 /* 998 * Only allow read-write access. 999 */ 1000 if (((flags & FWRITE) == 0) || ((flags & FREAD) == 0)) 1001 return(EPERM); 1002 1003 /* 1004 * We don't allow nonblocking access. 1005 */ 1006 if ((flags & O_NONBLOCK) != 0) { 1007 printf("xpt%d: can't do nonblocking access\n", unit); 1008 return(ENODEV); 1009 } 1010 1011 /* 1012 * We only have one transport layer right now. If someone accesses 1013 * us via something other than minor number 1, point out their 1014 * mistake. 1015 */ 1016 if (unit != 0) { 1017 printf("xptopen: got invalid xpt unit %d\n", unit); 1018 return(ENXIO); 1019 } 1020 1021 /* Mark ourselves open */ 1022 xsoftc.flags |= XPT_FLAG_OPEN; 1023 1024 return(0); 1025 } 1026 1027 static int 1028 xptclose(struct cdev *dev, int flag, int fmt, struct thread *td) 1029 { 1030 int unit; 1031 1032 unit = minor(dev) & 0xff; 1033 1034 /* 1035 * We only have one transport layer right now. If someone accesses 1036 * us via something other than minor number 1, point out their 1037 * mistake. 1038 */ 1039 if (unit != 0) { 1040 printf("xptclose: got invalid xpt unit %d\n", unit); 1041 return(ENXIO); 1042 } 1043 1044 /* Mark ourselves closed */ 1045 xsoftc.flags &= ~XPT_FLAG_OPEN; 1046 1047 return(0); 1048 } 1049 1050 static int 1051 xptioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 1052 { 1053 int unit, error; 1054 1055 error = 0; 1056 unit = minor(dev) & 0xff; 1057 1058 /* 1059 * We only have one transport layer right now. If someone accesses 1060 * us via something other than minor number 1, point out their 1061 * mistake. 1062 */ 1063 if (unit != 0) { 1064 printf("xptioctl: got invalid xpt unit %d\n", unit); 1065 return(ENXIO); 1066 } 1067 1068 switch(cmd) { 1069 /* 1070 * For the transport layer CAMIOCOMMAND ioctl, we really only want 1071 * to accept CCB types that don't quite make sense to send through a 1072 * passthrough driver. XPT_PATH_INQ is an exception to this, as stated 1073 * in the CAM spec. 1074 */ 1075 case CAMIOCOMMAND: { 1076 union ccb *ccb; 1077 union ccb *inccb; 1078 1079 inccb = (union ccb *)addr; 1080 1081 switch(inccb->ccb_h.func_code) { 1082 case XPT_SCAN_BUS: 1083 case XPT_RESET_BUS: 1084 if ((inccb->ccb_h.target_id != CAM_TARGET_WILDCARD) 1085 || (inccb->ccb_h.target_lun != CAM_LUN_WILDCARD)) { 1086 error = EINVAL; 1087 break; 1088 } 1089 /* FALLTHROUGH */ 1090 case XPT_PATH_INQ: 1091 case XPT_ENG_INQ: 1092 case XPT_SCAN_LUN: 1093 1094 ccb = xpt_alloc_ccb(); 1095 1096 /* 1097 * Create a path using the bus, target, and lun the 1098 * user passed in. 1099 */ 1100 if (xpt_create_path(&ccb->ccb_h.path, xpt_periph, 1101 inccb->ccb_h.path_id, 1102 inccb->ccb_h.target_id, 1103 inccb->ccb_h.target_lun) != 1104 CAM_REQ_CMP){ 1105 error = EINVAL; 1106 xpt_free_ccb(ccb); 1107 break; 1108 } 1109 /* Ensure all of our fields are correct */ 1110 xpt_setup_ccb(&ccb->ccb_h, ccb->ccb_h.path, 1111 inccb->ccb_h.pinfo.priority); 1112 xpt_merge_ccb(ccb, inccb); 1113 ccb->ccb_h.cbfcnp = xptdone; 1114 cam_periph_runccb(ccb, NULL, 0, 0, NULL); 1115 bcopy(ccb, inccb, sizeof(union ccb)); 1116 xpt_free_path(ccb->ccb_h.path); 1117 xpt_free_ccb(ccb); 1118 break; 1119 1120 case XPT_DEBUG: { 1121 union ccb ccb; 1122 1123 /* 1124 * This is an immediate CCB, so it's okay to 1125 * allocate it on the stack. 1126 */ 1127 1128 /* 1129 * Create a path using the bus, target, and lun the 1130 * user passed in. 1131 */ 1132 if (xpt_create_path(&ccb.ccb_h.path, xpt_periph, 1133 inccb->ccb_h.path_id, 1134 inccb->ccb_h.target_id, 1135 inccb->ccb_h.target_lun) != 1136 CAM_REQ_CMP){ 1137 error = EINVAL; 1138 break; 1139 } 1140 /* Ensure all of our fields are correct */ 1141 xpt_setup_ccb(&ccb.ccb_h, ccb.ccb_h.path, 1142 inccb->ccb_h.pinfo.priority); 1143 xpt_merge_ccb(&ccb, inccb); 1144 ccb.ccb_h.cbfcnp = xptdone; 1145 xpt_action(&ccb); 1146 bcopy(&ccb, inccb, sizeof(union ccb)); 1147 xpt_free_path(ccb.ccb_h.path); 1148 break; 1149 1150 } 1151 case XPT_DEV_MATCH: { 1152 struct cam_periph_map_info mapinfo; 1153 struct cam_path *old_path; 1154 1155 /* 1156 * We can't deal with physical addresses for this 1157 * type of transaction. 1158 */ 1159 if (inccb->ccb_h.flags & CAM_DATA_PHYS) { 1160 error = EINVAL; 1161 break; 1162 } 1163 1164 /* 1165 * Save this in case the caller had it set to 1166 * something in particular. 1167 */ 1168 old_path = inccb->ccb_h.path; 1169 1170 /* 1171 * We really don't need a path for the matching 1172 * code. The path is needed because of the 1173 * debugging statements in xpt_action(). They 1174 * assume that the CCB has a valid path. 1175 */ 1176 inccb->ccb_h.path = xpt_periph->path; 1177 1178 bzero(&mapinfo, sizeof(mapinfo)); 1179 1180 /* 1181 * Map the pattern and match buffers into kernel 1182 * virtual address space. 1183 */ 1184 error = cam_periph_mapmem(inccb, &mapinfo); 1185 1186 if (error) { 1187 inccb->ccb_h.path = old_path; 1188 break; 1189 } 1190 1191 /* 1192 * This is an immediate CCB, we can send it on directly. 1193 */ 1194 xpt_action(inccb); 1195 1196 /* 1197 * Map the buffers back into user space. 1198 */ 1199 cam_periph_unmapmem(inccb, &mapinfo); 1200 1201 inccb->ccb_h.path = old_path; 1202 1203 error = 0; 1204 break; 1205 } 1206 default: 1207 error = ENOTSUP; 1208 break; 1209 } 1210 break; 1211 } 1212 /* 1213 * This is the getpassthru ioctl. It takes a XPT_GDEVLIST ccb as input, 1214 * with the periphal driver name and unit name filled in. The other 1215 * fields don't really matter as input. The passthrough driver name 1216 * ("pass"), and unit number are passed back in the ccb. The current 1217 * device generation number, and the index into the device peripheral 1218 * driver list, and the status are also passed back. Note that 1219 * since we do everything in one pass, unlike the XPT_GDEVLIST ccb, 1220 * we never return a status of CAM_GDEVLIST_LIST_CHANGED. It is 1221 * (or rather should be) impossible for the device peripheral driver 1222 * list to change since we look at the whole thing in one pass, and 1223 * we do it with splcam protection. 1224 * 1225 */ 1226 case CAMGETPASSTHRU: { 1227 union ccb *ccb; 1228 struct cam_periph *periph; 1229 struct periph_driver **p_drv; 1230 char *name; 1231 u_int unit; 1232 u_int cur_generation; 1233 int base_periph_found; 1234 int splbreaknum; 1235 int s; 1236 1237 ccb = (union ccb *)addr; 1238 unit = ccb->cgdl.unit_number; 1239 name = ccb->cgdl.periph_name; 1240 /* 1241 * Every 100 devices, we want to drop our spl protection to 1242 * give the software interrupt handler a chance to run. 1243 * Most systems won't run into this check, but this should 1244 * avoid starvation in the software interrupt handler in 1245 * large systems. 1246 */ 1247 splbreaknum = 100; 1248 1249 ccb = (union ccb *)addr; 1250 1251 base_periph_found = 0; 1252 1253 /* 1254 * Sanity check -- make sure we don't get a null peripheral 1255 * driver name. 1256 */ 1257 if (*ccb->cgdl.periph_name == '\0') { 1258 error = EINVAL; 1259 break; 1260 } 1261 1262 /* Keep the list from changing while we traverse it */ 1263 s = splcam(); 1264 ptstartover: 1265 cur_generation = xsoftc.generation; 1266 1267 /* first find our driver in the list of drivers */ 1268 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) 1269 if (strcmp((*p_drv)->driver_name, name) == 0) 1270 break; 1271 1272 if (*p_drv == NULL) { 1273 splx(s); 1274 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 1275 ccb->cgdl.status = CAM_GDEVLIST_ERROR; 1276 *ccb->cgdl.periph_name = '\0'; 1277 ccb->cgdl.unit_number = 0; 1278 error = ENOENT; 1279 break; 1280 } 1281 1282 /* 1283 * Run through every peripheral instance of this driver 1284 * and check to see whether it matches the unit passed 1285 * in by the user. If it does, get out of the loops and 1286 * find the passthrough driver associated with that 1287 * peripheral driver. 1288 */ 1289 for (periph = TAILQ_FIRST(&(*p_drv)->units); periph != NULL; 1290 periph = TAILQ_NEXT(periph, unit_links)) { 1291 1292 if (periph->unit_number == unit) { 1293 break; 1294 } else if (--splbreaknum == 0) { 1295 splx(s); 1296 s = splcam(); 1297 splbreaknum = 100; 1298 if (cur_generation != xsoftc.generation) 1299 goto ptstartover; 1300 } 1301 } 1302 /* 1303 * If we found the peripheral driver that the user passed 1304 * in, go through all of the peripheral drivers for that 1305 * particular device and look for a passthrough driver. 1306 */ 1307 if (periph != NULL) { 1308 struct cam_ed *device; 1309 int i; 1310 1311 base_periph_found = 1; 1312 device = periph->path->device; 1313 for (i = 0, periph = SLIST_FIRST(&device->periphs); 1314 periph != NULL; 1315 periph = SLIST_NEXT(periph, periph_links), i++) { 1316 /* 1317 * Check to see whether we have a 1318 * passthrough device or not. 1319 */ 1320 if (strcmp(periph->periph_name, "pass") == 0) { 1321 /* 1322 * Fill in the getdevlist fields. 1323 */ 1324 strcpy(ccb->cgdl.periph_name, 1325 periph->periph_name); 1326 ccb->cgdl.unit_number = 1327 periph->unit_number; 1328 if (SLIST_NEXT(periph, periph_links)) 1329 ccb->cgdl.status = 1330 CAM_GDEVLIST_MORE_DEVS; 1331 else 1332 ccb->cgdl.status = 1333 CAM_GDEVLIST_LAST_DEVICE; 1334 ccb->cgdl.generation = 1335 device->generation; 1336 ccb->cgdl.index = i; 1337 /* 1338 * Fill in some CCB header fields 1339 * that the user may want. 1340 */ 1341 ccb->ccb_h.path_id = 1342 periph->path->bus->path_id; 1343 ccb->ccb_h.target_id = 1344 periph->path->target->target_id; 1345 ccb->ccb_h.target_lun = 1346 periph->path->device->lun_id; 1347 ccb->ccb_h.status = CAM_REQ_CMP; 1348 break; 1349 } 1350 } 1351 } 1352 1353 /* 1354 * If the periph is null here, one of two things has 1355 * happened. The first possibility is that we couldn't 1356 * find the unit number of the particular peripheral driver 1357 * that the user is asking about. e.g. the user asks for 1358 * the passthrough driver for "da11". We find the list of 1359 * "da" peripherals all right, but there is no unit 11. 1360 * The other possibility is that we went through the list 1361 * of peripheral drivers attached to the device structure, 1362 * but didn't find one with the name "pass". Either way, 1363 * we return ENOENT, since we couldn't find something. 1364 */ 1365 if (periph == NULL) { 1366 ccb->ccb_h.status = CAM_REQ_CMP_ERR; 1367 ccb->cgdl.status = CAM_GDEVLIST_ERROR; 1368 *ccb->cgdl.periph_name = '\0'; 1369 ccb->cgdl.unit_number = 0; 1370 error = ENOENT; 1371 /* 1372 * It is unfortunate that this is even necessary, 1373 * but there are many, many clueless users out there. 1374 * If this is true, the user is looking for the 1375 * passthrough driver, but doesn't have one in his 1376 * kernel. 1377 */ 1378 if (base_periph_found == 1) { 1379 printf("xptioctl: pass driver is not in the " 1380 "kernel\n"); 1381 printf("xptioctl: put \"device pass0\" in " 1382 "your kernel config file\n"); 1383 } 1384 } 1385 splx(s); 1386 break; 1387 } 1388 default: 1389 error = ENOTTY; 1390 break; 1391 } 1392 1393 return(error); 1394 } 1395 1396 static int 1397 cam_module_event_handler(module_t mod, int what, void *arg) 1398 { 1399 if (what == MOD_LOAD) { 1400 xpt_init(NULL); 1401 } else if (what == MOD_UNLOAD) { 1402 return EBUSY; 1403 } else { 1404 return EOPNOTSUPP; 1405 } 1406 1407 return 0; 1408 } 1409 1410 /* Functions accessed by the peripheral drivers */ 1411 static void 1412 xpt_init(dummy) 1413 void *dummy; 1414 { 1415 struct cam_sim *xpt_sim; 1416 struct cam_path *path; 1417 struct cam_devq *devq; 1418 cam_status status; 1419 1420 TAILQ_INIT(&xpt_busses); 1421 TAILQ_INIT(&cam_bioq); 1422 SLIST_INIT(&ccb_freeq); 1423 STAILQ_INIT(&highpowerq); 1424 1425 mtx_init(&cam_bioq_lock, "CAM BIOQ lock", NULL, MTX_DEF); 1426 1427 /* 1428 * The xpt layer is, itself, the equivelent of a SIM. 1429 * Allow 16 ccbs in the ccb pool for it. This should 1430 * give decent parallelism when we probe busses and 1431 * perform other XPT functions. 1432 */ 1433 devq = cam_simq_alloc(16); 1434 xpt_sim = cam_sim_alloc(xptaction, 1435 xptpoll, 1436 "xpt", 1437 /*softc*/NULL, 1438 /*unit*/0, 1439 /*max_dev_transactions*/0, 1440 /*max_tagged_dev_transactions*/0, 1441 devq); 1442 xpt_max_ccbs = 16; 1443 1444 xpt_bus_register(xpt_sim, /*bus #*/0); 1445 1446 /* 1447 * Looking at the XPT from the SIM layer, the XPT is 1448 * the equivelent of a peripheral driver. Allocate 1449 * a peripheral driver entry for us. 1450 */ 1451 if ((status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1452 CAM_TARGET_WILDCARD, 1453 CAM_LUN_WILDCARD)) != CAM_REQ_CMP) { 1454 printf("xpt_init: xpt_create_path failed with status %#x," 1455 " failing attach\n", status); 1456 return; 1457 } 1458 1459 cam_periph_alloc(xptregister, NULL, NULL, NULL, "xpt", CAM_PERIPH_BIO, 1460 path, NULL, 0, NULL); 1461 xpt_free_path(path); 1462 1463 xpt_sim->softc = xpt_periph; 1464 1465 /* 1466 * Register a callback for when interrupts are enabled. 1467 */ 1468 xpt_config_hook = 1469 (struct intr_config_hook *)malloc(sizeof(struct intr_config_hook), 1470 M_TEMP, M_NOWAIT | M_ZERO); 1471 if (xpt_config_hook == NULL) { 1472 printf("xpt_init: Cannot malloc config hook " 1473 "- failing attach\n"); 1474 return; 1475 } 1476 1477 xpt_config_hook->ich_func = xpt_config; 1478 if (config_intrhook_establish(xpt_config_hook) != 0) { 1479 free (xpt_config_hook, M_TEMP); 1480 printf("xpt_init: config_intrhook_establish failed " 1481 "- failing attach\n"); 1482 } 1483 1484 /* Install our software interrupt handlers */ 1485 swi_add(NULL, "cambio", camisr, &cam_bioq, SWI_CAMBIO, 0, &cambio_ih); 1486 } 1487 1488 static cam_status 1489 xptregister(struct cam_periph *periph, void *arg) 1490 { 1491 if (periph == NULL) { 1492 printf("xptregister: periph was NULL!!\n"); 1493 return(CAM_REQ_CMP_ERR); 1494 } 1495 1496 periph->softc = NULL; 1497 1498 xpt_periph = periph; 1499 1500 return(CAM_REQ_CMP); 1501 } 1502 1503 int32_t 1504 xpt_add_periph(struct cam_periph *periph) 1505 { 1506 struct cam_ed *device; 1507 int32_t status; 1508 struct periph_list *periph_head; 1509 1510 GIANT_REQUIRED; 1511 1512 device = periph->path->device; 1513 1514 periph_head = &device->periphs; 1515 1516 status = CAM_REQ_CMP; 1517 1518 if (device != NULL) { 1519 int s; 1520 1521 /* 1522 * Make room for this peripheral 1523 * so it will fit in the queue 1524 * when it's scheduled to run 1525 */ 1526 s = splsoftcam(); 1527 status = camq_resize(&device->drvq, 1528 device->drvq.array_size + 1); 1529 1530 device->generation++; 1531 1532 SLIST_INSERT_HEAD(periph_head, periph, periph_links); 1533 1534 splx(s); 1535 } 1536 1537 xsoftc.generation++; 1538 1539 return (status); 1540 } 1541 1542 void 1543 xpt_remove_periph(struct cam_periph *periph) 1544 { 1545 struct cam_ed *device; 1546 1547 GIANT_REQUIRED; 1548 1549 device = periph->path->device; 1550 1551 if (device != NULL) { 1552 int s; 1553 struct periph_list *periph_head; 1554 1555 periph_head = &device->periphs; 1556 1557 /* Release the slot for this peripheral */ 1558 s = splsoftcam(); 1559 camq_resize(&device->drvq, device->drvq.array_size - 1); 1560 1561 device->generation++; 1562 1563 SLIST_REMOVE(periph_head, periph, cam_periph, periph_links); 1564 1565 splx(s); 1566 } 1567 1568 xsoftc.generation++; 1569 1570 } 1571 1572 #ifdef CAM_NEW_TRAN_CODE 1573 1574 void 1575 xpt_announce_periph(struct cam_periph *periph, char *announce_string) 1576 { 1577 struct ccb_pathinq cpi; 1578 struct ccb_trans_settings cts; 1579 struct cam_path *path; 1580 u_int speed; 1581 u_int freq; 1582 u_int mb; 1583 int s; 1584 1585 GIANT_REQUIRED; 1586 1587 path = periph->path; 1588 /* 1589 * To ensure that this is printed in one piece, 1590 * mask out CAM interrupts. 1591 */ 1592 s = splsoftcam(); 1593 printf("%s%d at %s%d bus %d target %d lun %d\n", 1594 periph->periph_name, periph->unit_number, 1595 path->bus->sim->sim_name, 1596 path->bus->sim->unit_number, 1597 path->bus->sim->bus_id, 1598 path->target->target_id, 1599 path->device->lun_id); 1600 printf("%s%d: ", periph->periph_name, periph->unit_number); 1601 scsi_print_inquiry(&path->device->inq_data); 1602 if (bootverbose && path->device->serial_num_len > 0) { 1603 /* Don't wrap the screen - print only the first 60 chars */ 1604 printf("%s%d: Serial Number %.60s\n", periph->periph_name, 1605 periph->unit_number, path->device->serial_num); 1606 } 1607 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1); 1608 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 1609 cts.type = CTS_TYPE_CURRENT_SETTINGS; 1610 xpt_action((union ccb*)&cts); 1611 1612 /* Ask the SIM for its base transfer speed */ 1613 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1); 1614 cpi.ccb_h.func_code = XPT_PATH_INQ; 1615 xpt_action((union ccb *)&cpi); 1616 1617 speed = cpi.base_transfer_speed; 1618 freq = 0; 1619 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) { 1620 struct ccb_trans_settings_spi *spi; 1621 1622 spi = &cts.xport_specific.spi; 1623 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0 1624 && spi->sync_offset != 0) { 1625 freq = scsi_calc_syncsrate(spi->sync_period); 1626 speed = freq; 1627 } 1628 1629 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0) 1630 speed *= (0x01 << spi->bus_width); 1631 } 1632 1633 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) { 1634 struct ccb_trans_settings_fc *fc = &cts.xport_specific.fc; 1635 if (fc->valid & CTS_FC_VALID_SPEED) { 1636 speed = fc->bitrate; 1637 } 1638 } 1639 1640 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SAS) { 1641 struct ccb_trans_settings_sas *sas = &cts.xport_specific.sas; 1642 if (sas->valid & CTS_SAS_VALID_SPEED) { 1643 speed = sas->bitrate; 1644 } 1645 } 1646 1647 mb = speed / 1000; 1648 if (mb > 0) 1649 printf("%s%d: %d.%03dMB/s transfers", 1650 periph->periph_name, periph->unit_number, 1651 mb, speed % 1000); 1652 else 1653 printf("%s%d: %dKB/s transfers", periph->periph_name, 1654 periph->unit_number, speed); 1655 /* Report additional information about SPI connections */ 1656 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_SPI) { 1657 struct ccb_trans_settings_spi *spi; 1658 1659 spi = &cts.xport_specific.spi; 1660 if (freq != 0) { 1661 printf(" (%d.%03dMHz%s, offset %d", freq / 1000, 1662 freq % 1000, 1663 (spi->ppr_options & MSG_EXT_PPR_DT_REQ) != 0 1664 ? " DT" : "", 1665 spi->sync_offset); 1666 } 1667 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) != 0 1668 && spi->bus_width > 0) { 1669 if (freq != 0) { 1670 printf(", "); 1671 } else { 1672 printf(" ("); 1673 } 1674 printf("%dbit)", 8 * (0x01 << spi->bus_width)); 1675 } else if (freq != 0) { 1676 printf(")"); 1677 } 1678 } 1679 if (cts.ccb_h.status == CAM_REQ_CMP && cts.transport == XPORT_FC) { 1680 struct ccb_trans_settings_fc *fc; 1681 1682 fc = &cts.xport_specific.fc; 1683 if (fc->valid & CTS_FC_VALID_WWNN) 1684 printf(" WWNN 0x%llx", (long long) fc->wwnn); 1685 if (fc->valid & CTS_FC_VALID_WWPN) 1686 printf(" WWPN 0x%llx", (long long) fc->wwpn); 1687 if (fc->valid & CTS_FC_VALID_PORT) 1688 printf(" PortID 0x%x", fc->port); 1689 } 1690 1691 if (path->device->inq_flags & SID_CmdQue 1692 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) { 1693 printf("\n%s%d: Tagged Queueing Enabled", 1694 periph->periph_name, periph->unit_number); 1695 } 1696 printf("\n"); 1697 1698 /* 1699 * We only want to print the caller's announce string if they've 1700 * passed one in.. 1701 */ 1702 if (announce_string != NULL) 1703 printf("%s%d: %s\n", periph->periph_name, 1704 periph->unit_number, announce_string); 1705 splx(s); 1706 } 1707 #else /* CAM_NEW_TRAN_CODE */ 1708 void 1709 xpt_announce_periph(struct cam_periph *periph, char *announce_string) 1710 { 1711 int s; 1712 u_int mb; 1713 struct cam_path *path; 1714 struct ccb_trans_settings cts; 1715 1716 GIANT_REQUIRED; 1717 1718 path = periph->path; 1719 /* 1720 * To ensure that this is printed in one piece, 1721 * mask out CAM interrupts. 1722 */ 1723 s = splsoftcam(); 1724 printf("%s%d at %s%d bus %d target %d lun %d\n", 1725 periph->periph_name, periph->unit_number, 1726 path->bus->sim->sim_name, 1727 path->bus->sim->unit_number, 1728 path->bus->sim->bus_id, 1729 path->target->target_id, 1730 path->device->lun_id); 1731 printf("%s%d: ", periph->periph_name, periph->unit_number); 1732 scsi_print_inquiry(&path->device->inq_data); 1733 if ((bootverbose) 1734 && (path->device->serial_num_len > 0)) { 1735 /* Don't wrap the screen - print only the first 60 chars */ 1736 printf("%s%d: Serial Number %.60s\n", periph->periph_name, 1737 periph->unit_number, path->device->serial_num); 1738 } 1739 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1); 1740 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 1741 cts.flags = CCB_TRANS_CURRENT_SETTINGS; 1742 xpt_action((union ccb*)&cts); 1743 if (cts.ccb_h.status == CAM_REQ_CMP) { 1744 u_int speed; 1745 u_int freq; 1746 1747 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0 1748 && cts.sync_offset != 0) { 1749 freq = scsi_calc_syncsrate(cts.sync_period); 1750 speed = freq; 1751 } else { 1752 struct ccb_pathinq cpi; 1753 1754 /* Ask the SIM for its base transfer speed */ 1755 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1); 1756 cpi.ccb_h.func_code = XPT_PATH_INQ; 1757 xpt_action((union ccb *)&cpi); 1758 1759 speed = cpi.base_transfer_speed; 1760 freq = 0; 1761 } 1762 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0) 1763 speed *= (0x01 << cts.bus_width); 1764 mb = speed / 1000; 1765 if (mb > 0) 1766 printf("%s%d: %d.%03dMB/s transfers", 1767 periph->periph_name, periph->unit_number, 1768 mb, speed % 1000); 1769 else 1770 printf("%s%d: %dKB/s transfers", periph->periph_name, 1771 periph->unit_number, speed); 1772 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0 1773 && cts.sync_offset != 0) { 1774 printf(" (%d.%03dMHz, offset %d", freq / 1000, 1775 freq % 1000, cts.sync_offset); 1776 } 1777 if ((cts.valid & CCB_TRANS_BUS_WIDTH_VALID) != 0 1778 && cts.bus_width > 0) { 1779 if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0 1780 && cts.sync_offset != 0) { 1781 printf(", "); 1782 } else { 1783 printf(" ("); 1784 } 1785 printf("%dbit)", 8 * (0x01 << cts.bus_width)); 1786 } else if ((cts.valid & CCB_TRANS_SYNC_OFFSET_VALID) != 0 1787 && cts.sync_offset != 0) { 1788 printf(")"); 1789 } 1790 1791 if (path->device->inq_flags & SID_CmdQue 1792 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) { 1793 printf(", Tagged Queueing Enabled"); 1794 } 1795 1796 printf("\n"); 1797 } else if (path->device->inq_flags & SID_CmdQue 1798 || path->device->flags & CAM_DEV_TAG_AFTER_COUNT) { 1799 printf("%s%d: Tagged Queueing Enabled\n", 1800 periph->periph_name, periph->unit_number); 1801 } 1802 1803 /* 1804 * We only want to print the caller's announce string if they've 1805 * passed one in.. 1806 */ 1807 if (announce_string != NULL) 1808 printf("%s%d: %s\n", periph->periph_name, 1809 periph->unit_number, announce_string); 1810 splx(s); 1811 } 1812 1813 #endif /* CAM_NEW_TRAN_CODE */ 1814 1815 static dev_match_ret 1816 xptbusmatch(struct dev_match_pattern *patterns, u_int num_patterns, 1817 struct cam_eb *bus) 1818 { 1819 dev_match_ret retval; 1820 int i; 1821 1822 retval = DM_RET_NONE; 1823 1824 /* 1825 * If we aren't given something to match against, that's an error. 1826 */ 1827 if (bus == NULL) 1828 return(DM_RET_ERROR); 1829 1830 /* 1831 * If there are no match entries, then this bus matches no 1832 * matter what. 1833 */ 1834 if ((patterns == NULL) || (num_patterns == 0)) 1835 return(DM_RET_DESCEND | DM_RET_COPY); 1836 1837 for (i = 0; i < num_patterns; i++) { 1838 struct bus_match_pattern *cur_pattern; 1839 1840 /* 1841 * If the pattern in question isn't for a bus node, we 1842 * aren't interested. However, we do indicate to the 1843 * calling routine that we should continue descending the 1844 * tree, since the user wants to match against lower-level 1845 * EDT elements. 1846 */ 1847 if (patterns[i].type != DEV_MATCH_BUS) { 1848 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE) 1849 retval |= DM_RET_DESCEND; 1850 continue; 1851 } 1852 1853 cur_pattern = &patterns[i].pattern.bus_pattern; 1854 1855 /* 1856 * If they want to match any bus node, we give them any 1857 * device node. 1858 */ 1859 if (cur_pattern->flags == BUS_MATCH_ANY) { 1860 /* set the copy flag */ 1861 retval |= DM_RET_COPY; 1862 1863 /* 1864 * If we've already decided on an action, go ahead 1865 * and return. 1866 */ 1867 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE) 1868 return(retval); 1869 } 1870 1871 /* 1872 * Not sure why someone would do this... 1873 */ 1874 if (cur_pattern->flags == BUS_MATCH_NONE) 1875 continue; 1876 1877 if (((cur_pattern->flags & BUS_MATCH_PATH) != 0) 1878 && (cur_pattern->path_id != bus->path_id)) 1879 continue; 1880 1881 if (((cur_pattern->flags & BUS_MATCH_BUS_ID) != 0) 1882 && (cur_pattern->bus_id != bus->sim->bus_id)) 1883 continue; 1884 1885 if (((cur_pattern->flags & BUS_MATCH_UNIT) != 0) 1886 && (cur_pattern->unit_number != bus->sim->unit_number)) 1887 continue; 1888 1889 if (((cur_pattern->flags & BUS_MATCH_NAME) != 0) 1890 && (strncmp(cur_pattern->dev_name, bus->sim->sim_name, 1891 DEV_IDLEN) != 0)) 1892 continue; 1893 1894 /* 1895 * If we get to this point, the user definitely wants 1896 * information on this bus. So tell the caller to copy the 1897 * data out. 1898 */ 1899 retval |= DM_RET_COPY; 1900 1901 /* 1902 * If the return action has been set to descend, then we 1903 * know that we've already seen a non-bus matching 1904 * expression, therefore we need to further descend the tree. 1905 * This won't change by continuing around the loop, so we 1906 * go ahead and return. If we haven't seen a non-bus 1907 * matching expression, we keep going around the loop until 1908 * we exhaust the matching expressions. We'll set the stop 1909 * flag once we fall out of the loop. 1910 */ 1911 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND) 1912 return(retval); 1913 } 1914 1915 /* 1916 * If the return action hasn't been set to descend yet, that means 1917 * we haven't seen anything other than bus matching patterns. So 1918 * tell the caller to stop descending the tree -- the user doesn't 1919 * want to match against lower level tree elements. 1920 */ 1921 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE) 1922 retval |= DM_RET_STOP; 1923 1924 return(retval); 1925 } 1926 1927 static dev_match_ret 1928 xptdevicematch(struct dev_match_pattern *patterns, u_int num_patterns, 1929 struct cam_ed *device) 1930 { 1931 dev_match_ret retval; 1932 int i; 1933 1934 retval = DM_RET_NONE; 1935 1936 /* 1937 * If we aren't given something to match against, that's an error. 1938 */ 1939 if (device == NULL) 1940 return(DM_RET_ERROR); 1941 1942 /* 1943 * If there are no match entries, then this device matches no 1944 * matter what. 1945 */ 1946 if ((patterns == NULL) || (num_patterns == 0)) 1947 return(DM_RET_DESCEND | DM_RET_COPY); 1948 1949 for (i = 0; i < num_patterns; i++) { 1950 struct device_match_pattern *cur_pattern; 1951 1952 /* 1953 * If the pattern in question isn't for a device node, we 1954 * aren't interested. 1955 */ 1956 if (patterns[i].type != DEV_MATCH_DEVICE) { 1957 if ((patterns[i].type == DEV_MATCH_PERIPH) 1958 && ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE)) 1959 retval |= DM_RET_DESCEND; 1960 continue; 1961 } 1962 1963 cur_pattern = &patterns[i].pattern.device_pattern; 1964 1965 /* 1966 * If they want to match any device node, we give them any 1967 * device node. 1968 */ 1969 if (cur_pattern->flags == DEV_MATCH_ANY) { 1970 /* set the copy flag */ 1971 retval |= DM_RET_COPY; 1972 1973 1974 /* 1975 * If we've already decided on an action, go ahead 1976 * and return. 1977 */ 1978 if ((retval & DM_RET_ACTION_MASK) != DM_RET_NONE) 1979 return(retval); 1980 } 1981 1982 /* 1983 * Not sure why someone would do this... 1984 */ 1985 if (cur_pattern->flags == DEV_MATCH_NONE) 1986 continue; 1987 1988 if (((cur_pattern->flags & DEV_MATCH_PATH) != 0) 1989 && (cur_pattern->path_id != device->target->bus->path_id)) 1990 continue; 1991 1992 if (((cur_pattern->flags & DEV_MATCH_TARGET) != 0) 1993 && (cur_pattern->target_id != device->target->target_id)) 1994 continue; 1995 1996 if (((cur_pattern->flags & DEV_MATCH_LUN) != 0) 1997 && (cur_pattern->target_lun != device->lun_id)) 1998 continue; 1999 2000 if (((cur_pattern->flags & DEV_MATCH_INQUIRY) != 0) 2001 && (cam_quirkmatch((caddr_t)&device->inq_data, 2002 (caddr_t)&cur_pattern->inq_pat, 2003 1, sizeof(cur_pattern->inq_pat), 2004 scsi_static_inquiry_match) == NULL)) 2005 continue; 2006 2007 /* 2008 * If we get to this point, the user definitely wants 2009 * information on this device. So tell the caller to copy 2010 * the data out. 2011 */ 2012 retval |= DM_RET_COPY; 2013 2014 /* 2015 * If the return action has been set to descend, then we 2016 * know that we've already seen a peripheral matching 2017 * expression, therefore we need to further descend the tree. 2018 * This won't change by continuing around the loop, so we 2019 * go ahead and return. If we haven't seen a peripheral 2020 * matching expression, we keep going around the loop until 2021 * we exhaust the matching expressions. We'll set the stop 2022 * flag once we fall out of the loop. 2023 */ 2024 if ((retval & DM_RET_ACTION_MASK) == DM_RET_DESCEND) 2025 return(retval); 2026 } 2027 2028 /* 2029 * If the return action hasn't been set to descend yet, that means 2030 * we haven't seen any peripheral matching patterns. So tell the 2031 * caller to stop descending the tree -- the user doesn't want to 2032 * match against lower level tree elements. 2033 */ 2034 if ((retval & DM_RET_ACTION_MASK) == DM_RET_NONE) 2035 retval |= DM_RET_STOP; 2036 2037 return(retval); 2038 } 2039 2040 /* 2041 * Match a single peripheral against any number of match patterns. 2042 */ 2043 static dev_match_ret 2044 xptperiphmatch(struct dev_match_pattern *patterns, u_int num_patterns, 2045 struct cam_periph *periph) 2046 { 2047 dev_match_ret retval; 2048 int i; 2049 2050 /* 2051 * If we aren't given something to match against, that's an error. 2052 */ 2053 if (periph == NULL) 2054 return(DM_RET_ERROR); 2055 2056 /* 2057 * If there are no match entries, then this peripheral matches no 2058 * matter what. 2059 */ 2060 if ((patterns == NULL) || (num_patterns == 0)) 2061 return(DM_RET_STOP | DM_RET_COPY); 2062 2063 /* 2064 * There aren't any nodes below a peripheral node, so there's no 2065 * reason to descend the tree any further. 2066 */ 2067 retval = DM_RET_STOP; 2068 2069 for (i = 0; i < num_patterns; i++) { 2070 struct periph_match_pattern *cur_pattern; 2071 2072 /* 2073 * If the pattern in question isn't for a peripheral, we 2074 * aren't interested. 2075 */ 2076 if (patterns[i].type != DEV_MATCH_PERIPH) 2077 continue; 2078 2079 cur_pattern = &patterns[i].pattern.periph_pattern; 2080 2081 /* 2082 * If they want to match on anything, then we will do so. 2083 */ 2084 if (cur_pattern->flags == PERIPH_MATCH_ANY) { 2085 /* set the copy flag */ 2086 retval |= DM_RET_COPY; 2087 2088 /* 2089 * We've already set the return action to stop, 2090 * since there are no nodes below peripherals in 2091 * the tree. 2092 */ 2093 return(retval); 2094 } 2095 2096 /* 2097 * Not sure why someone would do this... 2098 */ 2099 if (cur_pattern->flags == PERIPH_MATCH_NONE) 2100 continue; 2101 2102 if (((cur_pattern->flags & PERIPH_MATCH_PATH) != 0) 2103 && (cur_pattern->path_id != periph->path->bus->path_id)) 2104 continue; 2105 2106 /* 2107 * For the target and lun id's, we have to make sure the 2108 * target and lun pointers aren't NULL. The xpt peripheral 2109 * has a wildcard target and device. 2110 */ 2111 if (((cur_pattern->flags & PERIPH_MATCH_TARGET) != 0) 2112 && ((periph->path->target == NULL) 2113 ||(cur_pattern->target_id != periph->path->target->target_id))) 2114 continue; 2115 2116 if (((cur_pattern->flags & PERIPH_MATCH_LUN) != 0) 2117 && ((periph->path->device == NULL) 2118 || (cur_pattern->target_lun != periph->path->device->lun_id))) 2119 continue; 2120 2121 if (((cur_pattern->flags & PERIPH_MATCH_UNIT) != 0) 2122 && (cur_pattern->unit_number != periph->unit_number)) 2123 continue; 2124 2125 if (((cur_pattern->flags & PERIPH_MATCH_NAME) != 0) 2126 && (strncmp(cur_pattern->periph_name, periph->periph_name, 2127 DEV_IDLEN) != 0)) 2128 continue; 2129 2130 /* 2131 * If we get to this point, the user definitely wants 2132 * information on this peripheral. So tell the caller to 2133 * copy the data out. 2134 */ 2135 retval |= DM_RET_COPY; 2136 2137 /* 2138 * The return action has already been set to stop, since 2139 * peripherals don't have any nodes below them in the EDT. 2140 */ 2141 return(retval); 2142 } 2143 2144 /* 2145 * If we get to this point, the peripheral that was passed in 2146 * doesn't match any of the patterns. 2147 */ 2148 return(retval); 2149 } 2150 2151 static int 2152 xptedtbusfunc(struct cam_eb *bus, void *arg) 2153 { 2154 struct ccb_dev_match *cdm; 2155 dev_match_ret retval; 2156 2157 cdm = (struct ccb_dev_match *)arg; 2158 2159 /* 2160 * If our position is for something deeper in the tree, that means 2161 * that we've already seen this node. So, we keep going down. 2162 */ 2163 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2164 && (cdm->pos.cookie.bus == bus) 2165 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2166 && (cdm->pos.cookie.target != NULL)) 2167 retval = DM_RET_DESCEND; 2168 else 2169 retval = xptbusmatch(cdm->patterns, cdm->num_patterns, bus); 2170 2171 /* 2172 * If we got an error, bail out of the search. 2173 */ 2174 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) { 2175 cdm->status = CAM_DEV_MATCH_ERROR; 2176 return(0); 2177 } 2178 2179 /* 2180 * If the copy flag is set, copy this bus out. 2181 */ 2182 if (retval & DM_RET_COPY) { 2183 int spaceleft, j; 2184 2185 spaceleft = cdm->match_buf_len - (cdm->num_matches * 2186 sizeof(struct dev_match_result)); 2187 2188 /* 2189 * If we don't have enough space to put in another 2190 * match result, save our position and tell the 2191 * user there are more devices to check. 2192 */ 2193 if (spaceleft < sizeof(struct dev_match_result)) { 2194 bzero(&cdm->pos, sizeof(cdm->pos)); 2195 cdm->pos.position_type = 2196 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS; 2197 2198 cdm->pos.cookie.bus = bus; 2199 cdm->pos.generations[CAM_BUS_GENERATION]= 2200 bus_generation; 2201 cdm->status = CAM_DEV_MATCH_MORE; 2202 return(0); 2203 } 2204 j = cdm->num_matches; 2205 cdm->num_matches++; 2206 cdm->matches[j].type = DEV_MATCH_BUS; 2207 cdm->matches[j].result.bus_result.path_id = bus->path_id; 2208 cdm->matches[j].result.bus_result.bus_id = bus->sim->bus_id; 2209 cdm->matches[j].result.bus_result.unit_number = 2210 bus->sim->unit_number; 2211 strncpy(cdm->matches[j].result.bus_result.dev_name, 2212 bus->sim->sim_name, DEV_IDLEN); 2213 } 2214 2215 /* 2216 * If the user is only interested in busses, there's no 2217 * reason to descend to the next level in the tree. 2218 */ 2219 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP) 2220 return(1); 2221 2222 /* 2223 * If there is a target generation recorded, check it to 2224 * make sure the target list hasn't changed. 2225 */ 2226 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2227 && (bus == cdm->pos.cookie.bus) 2228 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2229 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 0) 2230 && (cdm->pos.generations[CAM_TARGET_GENERATION] != 2231 bus->generation)) { 2232 cdm->status = CAM_DEV_MATCH_LIST_CHANGED; 2233 return(0); 2234 } 2235 2236 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2237 && (cdm->pos.cookie.bus == bus) 2238 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2239 && (cdm->pos.cookie.target != NULL)) 2240 return(xpttargettraverse(bus, 2241 (struct cam_et *)cdm->pos.cookie.target, 2242 xptedttargetfunc, arg)); 2243 else 2244 return(xpttargettraverse(bus, NULL, xptedttargetfunc, arg)); 2245 } 2246 2247 static int 2248 xptedttargetfunc(struct cam_et *target, void *arg) 2249 { 2250 struct ccb_dev_match *cdm; 2251 2252 cdm = (struct ccb_dev_match *)arg; 2253 2254 /* 2255 * If there is a device list generation recorded, check it to 2256 * make sure the device list hasn't changed. 2257 */ 2258 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2259 && (cdm->pos.cookie.bus == target->bus) 2260 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2261 && (cdm->pos.cookie.target == target) 2262 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE) 2263 && (cdm->pos.generations[CAM_DEV_GENERATION] != 0) 2264 && (cdm->pos.generations[CAM_DEV_GENERATION] != 2265 target->generation)) { 2266 cdm->status = CAM_DEV_MATCH_LIST_CHANGED; 2267 return(0); 2268 } 2269 2270 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2271 && (cdm->pos.cookie.bus == target->bus) 2272 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2273 && (cdm->pos.cookie.target == target) 2274 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE) 2275 && (cdm->pos.cookie.device != NULL)) 2276 return(xptdevicetraverse(target, 2277 (struct cam_ed *)cdm->pos.cookie.device, 2278 xptedtdevicefunc, arg)); 2279 else 2280 return(xptdevicetraverse(target, NULL, xptedtdevicefunc, arg)); 2281 } 2282 2283 static int 2284 xptedtdevicefunc(struct cam_ed *device, void *arg) 2285 { 2286 2287 struct ccb_dev_match *cdm; 2288 dev_match_ret retval; 2289 2290 cdm = (struct ccb_dev_match *)arg; 2291 2292 /* 2293 * If our position is for something deeper in the tree, that means 2294 * that we've already seen this node. So, we keep going down. 2295 */ 2296 if ((cdm->pos.position_type & CAM_DEV_POS_DEVICE) 2297 && (cdm->pos.cookie.device == device) 2298 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH) 2299 && (cdm->pos.cookie.periph != NULL)) 2300 retval = DM_RET_DESCEND; 2301 else 2302 retval = xptdevicematch(cdm->patterns, cdm->num_patterns, 2303 device); 2304 2305 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) { 2306 cdm->status = CAM_DEV_MATCH_ERROR; 2307 return(0); 2308 } 2309 2310 /* 2311 * If the copy flag is set, copy this device out. 2312 */ 2313 if (retval & DM_RET_COPY) { 2314 int spaceleft, j; 2315 2316 spaceleft = cdm->match_buf_len - (cdm->num_matches * 2317 sizeof(struct dev_match_result)); 2318 2319 /* 2320 * If we don't have enough space to put in another 2321 * match result, save our position and tell the 2322 * user there are more devices to check. 2323 */ 2324 if (spaceleft < sizeof(struct dev_match_result)) { 2325 bzero(&cdm->pos, sizeof(cdm->pos)); 2326 cdm->pos.position_type = 2327 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS | 2328 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE; 2329 2330 cdm->pos.cookie.bus = device->target->bus; 2331 cdm->pos.generations[CAM_BUS_GENERATION]= 2332 bus_generation; 2333 cdm->pos.cookie.target = device->target; 2334 cdm->pos.generations[CAM_TARGET_GENERATION] = 2335 device->target->bus->generation; 2336 cdm->pos.cookie.device = device; 2337 cdm->pos.generations[CAM_DEV_GENERATION] = 2338 device->target->generation; 2339 cdm->status = CAM_DEV_MATCH_MORE; 2340 return(0); 2341 } 2342 j = cdm->num_matches; 2343 cdm->num_matches++; 2344 cdm->matches[j].type = DEV_MATCH_DEVICE; 2345 cdm->matches[j].result.device_result.path_id = 2346 device->target->bus->path_id; 2347 cdm->matches[j].result.device_result.target_id = 2348 device->target->target_id; 2349 cdm->matches[j].result.device_result.target_lun = 2350 device->lun_id; 2351 bcopy(&device->inq_data, 2352 &cdm->matches[j].result.device_result.inq_data, 2353 sizeof(struct scsi_inquiry_data)); 2354 2355 /* Let the user know whether this device is unconfigured */ 2356 if (device->flags & CAM_DEV_UNCONFIGURED) 2357 cdm->matches[j].result.device_result.flags = 2358 DEV_RESULT_UNCONFIGURED; 2359 else 2360 cdm->matches[j].result.device_result.flags = 2361 DEV_RESULT_NOFLAG; 2362 } 2363 2364 /* 2365 * If the user isn't interested in peripherals, don't descend 2366 * the tree any further. 2367 */ 2368 if ((retval & DM_RET_ACTION_MASK) == DM_RET_STOP) 2369 return(1); 2370 2371 /* 2372 * If there is a peripheral list generation recorded, make sure 2373 * it hasn't changed. 2374 */ 2375 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2376 && (device->target->bus == cdm->pos.cookie.bus) 2377 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2378 && (device->target == cdm->pos.cookie.target) 2379 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE) 2380 && (device == cdm->pos.cookie.device) 2381 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH) 2382 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0) 2383 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 2384 device->generation)){ 2385 cdm->status = CAM_DEV_MATCH_LIST_CHANGED; 2386 return(0); 2387 } 2388 2389 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2390 && (cdm->pos.cookie.bus == device->target->bus) 2391 && (cdm->pos.position_type & CAM_DEV_POS_TARGET) 2392 && (cdm->pos.cookie.target == device->target) 2393 && (cdm->pos.position_type & CAM_DEV_POS_DEVICE) 2394 && (cdm->pos.cookie.device == device) 2395 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH) 2396 && (cdm->pos.cookie.periph != NULL)) 2397 return(xptperiphtraverse(device, 2398 (struct cam_periph *)cdm->pos.cookie.periph, 2399 xptedtperiphfunc, arg)); 2400 else 2401 return(xptperiphtraverse(device, NULL, xptedtperiphfunc, arg)); 2402 } 2403 2404 static int 2405 xptedtperiphfunc(struct cam_periph *periph, void *arg) 2406 { 2407 struct ccb_dev_match *cdm; 2408 dev_match_ret retval; 2409 2410 cdm = (struct ccb_dev_match *)arg; 2411 2412 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph); 2413 2414 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) { 2415 cdm->status = CAM_DEV_MATCH_ERROR; 2416 return(0); 2417 } 2418 2419 /* 2420 * If the copy flag is set, copy this peripheral out. 2421 */ 2422 if (retval & DM_RET_COPY) { 2423 int spaceleft, j; 2424 2425 spaceleft = cdm->match_buf_len - (cdm->num_matches * 2426 sizeof(struct dev_match_result)); 2427 2428 /* 2429 * If we don't have enough space to put in another 2430 * match result, save our position and tell the 2431 * user there are more devices to check. 2432 */ 2433 if (spaceleft < sizeof(struct dev_match_result)) { 2434 bzero(&cdm->pos, sizeof(cdm->pos)); 2435 cdm->pos.position_type = 2436 CAM_DEV_POS_EDT | CAM_DEV_POS_BUS | 2437 CAM_DEV_POS_TARGET | CAM_DEV_POS_DEVICE | 2438 CAM_DEV_POS_PERIPH; 2439 2440 cdm->pos.cookie.bus = periph->path->bus; 2441 cdm->pos.generations[CAM_BUS_GENERATION]= 2442 bus_generation; 2443 cdm->pos.cookie.target = periph->path->target; 2444 cdm->pos.generations[CAM_TARGET_GENERATION] = 2445 periph->path->bus->generation; 2446 cdm->pos.cookie.device = periph->path->device; 2447 cdm->pos.generations[CAM_DEV_GENERATION] = 2448 periph->path->target->generation; 2449 cdm->pos.cookie.periph = periph; 2450 cdm->pos.generations[CAM_PERIPH_GENERATION] = 2451 periph->path->device->generation; 2452 cdm->status = CAM_DEV_MATCH_MORE; 2453 return(0); 2454 } 2455 2456 j = cdm->num_matches; 2457 cdm->num_matches++; 2458 cdm->matches[j].type = DEV_MATCH_PERIPH; 2459 cdm->matches[j].result.periph_result.path_id = 2460 periph->path->bus->path_id; 2461 cdm->matches[j].result.periph_result.target_id = 2462 periph->path->target->target_id; 2463 cdm->matches[j].result.periph_result.target_lun = 2464 periph->path->device->lun_id; 2465 cdm->matches[j].result.periph_result.unit_number = 2466 periph->unit_number; 2467 strncpy(cdm->matches[j].result.periph_result.periph_name, 2468 periph->periph_name, DEV_IDLEN); 2469 } 2470 2471 return(1); 2472 } 2473 2474 static int 2475 xptedtmatch(struct ccb_dev_match *cdm) 2476 { 2477 int ret; 2478 2479 cdm->num_matches = 0; 2480 2481 /* 2482 * Check the bus list generation. If it has changed, the user 2483 * needs to reset everything and start over. 2484 */ 2485 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2486 && (cdm->pos.generations[CAM_BUS_GENERATION] != 0) 2487 && (cdm->pos.generations[CAM_BUS_GENERATION] != bus_generation)) { 2488 cdm->status = CAM_DEV_MATCH_LIST_CHANGED; 2489 return(0); 2490 } 2491 2492 if ((cdm->pos.position_type & CAM_DEV_POS_BUS) 2493 && (cdm->pos.cookie.bus != NULL)) 2494 ret = xptbustraverse((struct cam_eb *)cdm->pos.cookie.bus, 2495 xptedtbusfunc, cdm); 2496 else 2497 ret = xptbustraverse(NULL, xptedtbusfunc, cdm); 2498 2499 /* 2500 * If we get back 0, that means that we had to stop before fully 2501 * traversing the EDT. It also means that one of the subroutines 2502 * has set the status field to the proper value. If we get back 1, 2503 * we've fully traversed the EDT and copied out any matching entries. 2504 */ 2505 if (ret == 1) 2506 cdm->status = CAM_DEV_MATCH_LAST; 2507 2508 return(ret); 2509 } 2510 2511 static int 2512 xptplistpdrvfunc(struct periph_driver **pdrv, void *arg) 2513 { 2514 struct ccb_dev_match *cdm; 2515 2516 cdm = (struct ccb_dev_match *)arg; 2517 2518 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR) 2519 && (cdm->pos.cookie.pdrv == pdrv) 2520 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH) 2521 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 0) 2522 && (cdm->pos.generations[CAM_PERIPH_GENERATION] != 2523 (*pdrv)->generation)) { 2524 cdm->status = CAM_DEV_MATCH_LIST_CHANGED; 2525 return(0); 2526 } 2527 2528 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR) 2529 && (cdm->pos.cookie.pdrv == pdrv) 2530 && (cdm->pos.position_type & CAM_DEV_POS_PERIPH) 2531 && (cdm->pos.cookie.periph != NULL)) 2532 return(xptpdperiphtraverse(pdrv, 2533 (struct cam_periph *)cdm->pos.cookie.periph, 2534 xptplistperiphfunc, arg)); 2535 else 2536 return(xptpdperiphtraverse(pdrv, NULL,xptplistperiphfunc, arg)); 2537 } 2538 2539 static int 2540 xptplistperiphfunc(struct cam_periph *periph, void *arg) 2541 { 2542 struct ccb_dev_match *cdm; 2543 dev_match_ret retval; 2544 2545 cdm = (struct ccb_dev_match *)arg; 2546 2547 retval = xptperiphmatch(cdm->patterns, cdm->num_patterns, periph); 2548 2549 if ((retval & DM_RET_ACTION_MASK) == DM_RET_ERROR) { 2550 cdm->status = CAM_DEV_MATCH_ERROR; 2551 return(0); 2552 } 2553 2554 /* 2555 * If the copy flag is set, copy this peripheral out. 2556 */ 2557 if (retval & DM_RET_COPY) { 2558 int spaceleft, j; 2559 2560 spaceleft = cdm->match_buf_len - (cdm->num_matches * 2561 sizeof(struct dev_match_result)); 2562 2563 /* 2564 * If we don't have enough space to put in another 2565 * match result, save our position and tell the 2566 * user there are more devices to check. 2567 */ 2568 if (spaceleft < sizeof(struct dev_match_result)) { 2569 struct periph_driver **pdrv; 2570 2571 pdrv = NULL; 2572 bzero(&cdm->pos, sizeof(cdm->pos)); 2573 cdm->pos.position_type = 2574 CAM_DEV_POS_PDRV | CAM_DEV_POS_PDPTR | 2575 CAM_DEV_POS_PERIPH; 2576 2577 /* 2578 * This may look a bit non-sensical, but it is 2579 * actually quite logical. There are very few 2580 * peripheral drivers, and bloating every peripheral 2581 * structure with a pointer back to its parent 2582 * peripheral driver linker set entry would cost 2583 * more in the long run than doing this quick lookup. 2584 */ 2585 for (pdrv = periph_drivers; *pdrv != NULL; pdrv++) { 2586 if (strcmp((*pdrv)->driver_name, 2587 periph->periph_name) == 0) 2588 break; 2589 } 2590 2591 if (*pdrv == NULL) { 2592 cdm->status = CAM_DEV_MATCH_ERROR; 2593 return(0); 2594 } 2595 2596 cdm->pos.cookie.pdrv = pdrv; 2597 /* 2598 * The periph generation slot does double duty, as 2599 * does the periph pointer slot. They are used for 2600 * both edt and pdrv lookups and positioning. 2601 */ 2602 cdm->pos.cookie.periph = periph; 2603 cdm->pos.generations[CAM_PERIPH_GENERATION] = 2604 (*pdrv)->generation; 2605 cdm->status = CAM_DEV_MATCH_MORE; 2606 return(0); 2607 } 2608 2609 j = cdm->num_matches; 2610 cdm->num_matches++; 2611 cdm->matches[j].type = DEV_MATCH_PERIPH; 2612 cdm->matches[j].result.periph_result.path_id = 2613 periph->path->bus->path_id; 2614 2615 /* 2616 * The transport layer peripheral doesn't have a target or 2617 * lun. 2618 */ 2619 if (periph->path->target) 2620 cdm->matches[j].result.periph_result.target_id = 2621 periph->path->target->target_id; 2622 else 2623 cdm->matches[j].result.periph_result.target_id = -1; 2624 2625 if (periph->path->device) 2626 cdm->matches[j].result.periph_result.target_lun = 2627 periph->path->device->lun_id; 2628 else 2629 cdm->matches[j].result.periph_result.target_lun = -1; 2630 2631 cdm->matches[j].result.periph_result.unit_number = 2632 periph->unit_number; 2633 strncpy(cdm->matches[j].result.periph_result.periph_name, 2634 periph->periph_name, DEV_IDLEN); 2635 } 2636 2637 return(1); 2638 } 2639 2640 static int 2641 xptperiphlistmatch(struct ccb_dev_match *cdm) 2642 { 2643 int ret; 2644 2645 cdm->num_matches = 0; 2646 2647 /* 2648 * At this point in the edt traversal function, we check the bus 2649 * list generation to make sure that no busses have been added or 2650 * removed since the user last sent a XPT_DEV_MATCH ccb through. 2651 * For the peripheral driver list traversal function, however, we 2652 * don't have to worry about new peripheral driver types coming or 2653 * going; they're in a linker set, and therefore can't change 2654 * without a recompile. 2655 */ 2656 2657 if ((cdm->pos.position_type & CAM_DEV_POS_PDPTR) 2658 && (cdm->pos.cookie.pdrv != NULL)) 2659 ret = xptpdrvtraverse( 2660 (struct periph_driver **)cdm->pos.cookie.pdrv, 2661 xptplistpdrvfunc, cdm); 2662 else 2663 ret = xptpdrvtraverse(NULL, xptplistpdrvfunc, cdm); 2664 2665 /* 2666 * If we get back 0, that means that we had to stop before fully 2667 * traversing the peripheral driver tree. It also means that one of 2668 * the subroutines has set the status field to the proper value. If 2669 * we get back 1, we've fully traversed the EDT and copied out any 2670 * matching entries. 2671 */ 2672 if (ret == 1) 2673 cdm->status = CAM_DEV_MATCH_LAST; 2674 2675 return(ret); 2676 } 2677 2678 static int 2679 xptbustraverse(struct cam_eb *start_bus, xpt_busfunc_t *tr_func, void *arg) 2680 { 2681 struct cam_eb *bus, *next_bus; 2682 int retval; 2683 2684 retval = 1; 2685 2686 for (bus = (start_bus ? start_bus : TAILQ_FIRST(&xpt_busses)); 2687 bus != NULL; 2688 bus = next_bus) { 2689 next_bus = TAILQ_NEXT(bus, links); 2690 2691 retval = tr_func(bus, arg); 2692 if (retval == 0) 2693 return(retval); 2694 } 2695 2696 return(retval); 2697 } 2698 2699 static int 2700 xpttargettraverse(struct cam_eb *bus, struct cam_et *start_target, 2701 xpt_targetfunc_t *tr_func, void *arg) 2702 { 2703 struct cam_et *target, *next_target; 2704 int retval; 2705 2706 retval = 1; 2707 for (target = (start_target ? start_target : 2708 TAILQ_FIRST(&bus->et_entries)); 2709 target != NULL; target = next_target) { 2710 2711 next_target = TAILQ_NEXT(target, links); 2712 2713 retval = tr_func(target, arg); 2714 2715 if (retval == 0) 2716 return(retval); 2717 } 2718 2719 return(retval); 2720 } 2721 2722 static int 2723 xptdevicetraverse(struct cam_et *target, struct cam_ed *start_device, 2724 xpt_devicefunc_t *tr_func, void *arg) 2725 { 2726 struct cam_ed *device, *next_device; 2727 int retval; 2728 2729 retval = 1; 2730 for (device = (start_device ? start_device : 2731 TAILQ_FIRST(&target->ed_entries)); 2732 device != NULL; 2733 device = next_device) { 2734 2735 next_device = TAILQ_NEXT(device, links); 2736 2737 retval = tr_func(device, arg); 2738 2739 if (retval == 0) 2740 return(retval); 2741 } 2742 2743 return(retval); 2744 } 2745 2746 static int 2747 xptperiphtraverse(struct cam_ed *device, struct cam_periph *start_periph, 2748 xpt_periphfunc_t *tr_func, void *arg) 2749 { 2750 struct cam_periph *periph, *next_periph; 2751 int retval; 2752 2753 retval = 1; 2754 2755 for (periph = (start_periph ? start_periph : 2756 SLIST_FIRST(&device->periphs)); 2757 periph != NULL; 2758 periph = next_periph) { 2759 2760 next_periph = SLIST_NEXT(periph, periph_links); 2761 2762 retval = tr_func(periph, arg); 2763 if (retval == 0) 2764 return(retval); 2765 } 2766 2767 return(retval); 2768 } 2769 2770 static int 2771 xptpdrvtraverse(struct periph_driver **start_pdrv, 2772 xpt_pdrvfunc_t *tr_func, void *arg) 2773 { 2774 struct periph_driver **pdrv; 2775 int retval; 2776 2777 retval = 1; 2778 2779 /* 2780 * We don't traverse the peripheral driver list like we do the 2781 * other lists, because it is a linker set, and therefore cannot be 2782 * changed during runtime. If the peripheral driver list is ever 2783 * re-done to be something other than a linker set (i.e. it can 2784 * change while the system is running), the list traversal should 2785 * be modified to work like the other traversal functions. 2786 */ 2787 for (pdrv = (start_pdrv ? start_pdrv : periph_drivers); 2788 *pdrv != NULL; pdrv++) { 2789 retval = tr_func(pdrv, arg); 2790 2791 if (retval == 0) 2792 return(retval); 2793 } 2794 2795 return(retval); 2796 } 2797 2798 static int 2799 xptpdperiphtraverse(struct periph_driver **pdrv, 2800 struct cam_periph *start_periph, 2801 xpt_periphfunc_t *tr_func, void *arg) 2802 { 2803 struct cam_periph *periph, *next_periph; 2804 int retval; 2805 2806 retval = 1; 2807 2808 for (periph = (start_periph ? start_periph : 2809 TAILQ_FIRST(&(*pdrv)->units)); periph != NULL; 2810 periph = next_periph) { 2811 2812 next_periph = TAILQ_NEXT(periph, unit_links); 2813 2814 retval = tr_func(periph, arg); 2815 if (retval == 0) 2816 return(retval); 2817 } 2818 return(retval); 2819 } 2820 2821 static int 2822 xptdefbusfunc(struct cam_eb *bus, void *arg) 2823 { 2824 struct xpt_traverse_config *tr_config; 2825 2826 tr_config = (struct xpt_traverse_config *)arg; 2827 2828 if (tr_config->depth == XPT_DEPTH_BUS) { 2829 xpt_busfunc_t *tr_func; 2830 2831 tr_func = (xpt_busfunc_t *)tr_config->tr_func; 2832 2833 return(tr_func(bus, tr_config->tr_arg)); 2834 } else 2835 return(xpttargettraverse(bus, NULL, xptdeftargetfunc, arg)); 2836 } 2837 2838 static int 2839 xptdeftargetfunc(struct cam_et *target, void *arg) 2840 { 2841 struct xpt_traverse_config *tr_config; 2842 2843 tr_config = (struct xpt_traverse_config *)arg; 2844 2845 if (tr_config->depth == XPT_DEPTH_TARGET) { 2846 xpt_targetfunc_t *tr_func; 2847 2848 tr_func = (xpt_targetfunc_t *)tr_config->tr_func; 2849 2850 return(tr_func(target, tr_config->tr_arg)); 2851 } else 2852 return(xptdevicetraverse(target, NULL, xptdefdevicefunc, arg)); 2853 } 2854 2855 static int 2856 xptdefdevicefunc(struct cam_ed *device, void *arg) 2857 { 2858 struct xpt_traverse_config *tr_config; 2859 2860 tr_config = (struct xpt_traverse_config *)arg; 2861 2862 if (tr_config->depth == XPT_DEPTH_DEVICE) { 2863 xpt_devicefunc_t *tr_func; 2864 2865 tr_func = (xpt_devicefunc_t *)tr_config->tr_func; 2866 2867 return(tr_func(device, tr_config->tr_arg)); 2868 } else 2869 return(xptperiphtraverse(device, NULL, xptdefperiphfunc, arg)); 2870 } 2871 2872 static int 2873 xptdefperiphfunc(struct cam_periph *periph, void *arg) 2874 { 2875 struct xpt_traverse_config *tr_config; 2876 xpt_periphfunc_t *tr_func; 2877 2878 tr_config = (struct xpt_traverse_config *)arg; 2879 2880 tr_func = (xpt_periphfunc_t *)tr_config->tr_func; 2881 2882 /* 2883 * Unlike the other default functions, we don't check for depth 2884 * here. The peripheral driver level is the last level in the EDT, 2885 * so if we're here, we should execute the function in question. 2886 */ 2887 return(tr_func(periph, tr_config->tr_arg)); 2888 } 2889 2890 /* 2891 * Execute the given function for every bus in the EDT. 2892 */ 2893 static int 2894 xpt_for_all_busses(xpt_busfunc_t *tr_func, void *arg) 2895 { 2896 struct xpt_traverse_config tr_config; 2897 2898 tr_config.depth = XPT_DEPTH_BUS; 2899 tr_config.tr_func = tr_func; 2900 tr_config.tr_arg = arg; 2901 2902 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config)); 2903 } 2904 2905 #ifdef notusedyet 2906 /* 2907 * Execute the given function for every target in the EDT. 2908 */ 2909 static int 2910 xpt_for_all_targets(xpt_targetfunc_t *tr_func, void *arg) 2911 { 2912 struct xpt_traverse_config tr_config; 2913 2914 tr_config.depth = XPT_DEPTH_TARGET; 2915 tr_config.tr_func = tr_func; 2916 tr_config.tr_arg = arg; 2917 2918 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config)); 2919 } 2920 #endif /* notusedyet */ 2921 2922 /* 2923 * Execute the given function for every device in the EDT. 2924 */ 2925 static int 2926 xpt_for_all_devices(xpt_devicefunc_t *tr_func, void *arg) 2927 { 2928 struct xpt_traverse_config tr_config; 2929 2930 tr_config.depth = XPT_DEPTH_DEVICE; 2931 tr_config.tr_func = tr_func; 2932 tr_config.tr_arg = arg; 2933 2934 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config)); 2935 } 2936 2937 #ifdef notusedyet 2938 /* 2939 * Execute the given function for every peripheral in the EDT. 2940 */ 2941 static int 2942 xpt_for_all_periphs(xpt_periphfunc_t *tr_func, void *arg) 2943 { 2944 struct xpt_traverse_config tr_config; 2945 2946 tr_config.depth = XPT_DEPTH_PERIPH; 2947 tr_config.tr_func = tr_func; 2948 tr_config.tr_arg = arg; 2949 2950 return(xptbustraverse(NULL, xptdefbusfunc, &tr_config)); 2951 } 2952 #endif /* notusedyet */ 2953 2954 static int 2955 xptsetasyncfunc(struct cam_ed *device, void *arg) 2956 { 2957 struct cam_path path; 2958 struct ccb_getdev cgd; 2959 struct async_node *cur_entry; 2960 2961 cur_entry = (struct async_node *)arg; 2962 2963 /* 2964 * Don't report unconfigured devices (Wildcard devs, 2965 * devices only for target mode, device instances 2966 * that have been invalidated but are waiting for 2967 * their last reference count to be released). 2968 */ 2969 if ((device->flags & CAM_DEV_UNCONFIGURED) != 0) 2970 return (1); 2971 2972 xpt_compile_path(&path, 2973 NULL, 2974 device->target->bus->path_id, 2975 device->target->target_id, 2976 device->lun_id); 2977 xpt_setup_ccb(&cgd.ccb_h, &path, /*priority*/1); 2978 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 2979 xpt_action((union ccb *)&cgd); 2980 cur_entry->callback(cur_entry->callback_arg, 2981 AC_FOUND_DEVICE, 2982 &path, &cgd); 2983 xpt_release_path(&path); 2984 2985 return(1); 2986 } 2987 2988 static int 2989 xptsetasyncbusfunc(struct cam_eb *bus, void *arg) 2990 { 2991 struct cam_path path; 2992 struct ccb_pathinq cpi; 2993 struct async_node *cur_entry; 2994 2995 cur_entry = (struct async_node *)arg; 2996 2997 xpt_compile_path(&path, /*periph*/NULL, 2998 bus->sim->path_id, 2999 CAM_TARGET_WILDCARD, 3000 CAM_LUN_WILDCARD); 3001 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1); 3002 cpi.ccb_h.func_code = XPT_PATH_INQ; 3003 xpt_action((union ccb *)&cpi); 3004 cur_entry->callback(cur_entry->callback_arg, 3005 AC_PATH_REGISTERED, 3006 &path, &cpi); 3007 xpt_release_path(&path); 3008 3009 return(1); 3010 } 3011 3012 void 3013 xpt_action(union ccb *start_ccb) 3014 { 3015 int iopl; 3016 3017 GIANT_REQUIRED; 3018 3019 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_action\n")); 3020 3021 start_ccb->ccb_h.status = CAM_REQ_INPROG; 3022 3023 iopl = splsoftcam(); 3024 switch (start_ccb->ccb_h.func_code) { 3025 case XPT_SCSI_IO: 3026 { 3027 #ifdef CAM_NEW_TRAN_CODE 3028 struct cam_ed *device; 3029 #endif /* CAM_NEW_TRAN_CODE */ 3030 #ifdef CAMDEBUG 3031 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1]; 3032 struct cam_path *path; 3033 3034 path = start_ccb->ccb_h.path; 3035 #endif 3036 3037 /* 3038 * For the sake of compatibility with SCSI-1 3039 * devices that may not understand the identify 3040 * message, we include lun information in the 3041 * second byte of all commands. SCSI-1 specifies 3042 * that luns are a 3 bit value and reserves only 3 3043 * bits for lun information in the CDB. Later 3044 * revisions of the SCSI spec allow for more than 8 3045 * luns, but have deprecated lun information in the 3046 * CDB. So, if the lun won't fit, we must omit. 3047 * 3048 * Also be aware that during initial probing for devices, 3049 * the inquiry information is unknown but initialized to 0. 3050 * This means that this code will be exercised while probing 3051 * devices with an ANSI revision greater than 2. 3052 */ 3053 #ifdef CAM_NEW_TRAN_CODE 3054 device = start_ccb->ccb_h.path->device; 3055 if (device->protocol_version <= SCSI_REV_2 3056 #else /* CAM_NEW_TRAN_CODE */ 3057 if (SID_ANSI_REV(&start_ccb->ccb_h.path->device->inq_data) <= 2 3058 #endif /* CAM_NEW_TRAN_CODE */ 3059 && start_ccb->ccb_h.target_lun < 8 3060 && (start_ccb->ccb_h.flags & CAM_CDB_POINTER) == 0) { 3061 3062 start_ccb->csio.cdb_io.cdb_bytes[1] |= 3063 start_ccb->ccb_h.target_lun << 5; 3064 } 3065 start_ccb->csio.scsi_status = SCSI_STATUS_OK; 3066 CAM_DEBUG(path, CAM_DEBUG_CDB,("%s. CDB: %s\n", 3067 scsi_op_desc(start_ccb->csio.cdb_io.cdb_bytes[0], 3068 &path->device->inq_data), 3069 scsi_cdb_string(start_ccb->csio.cdb_io.cdb_bytes, 3070 cdb_str, sizeof(cdb_str)))); 3071 } 3072 /* FALLTHROUGH */ 3073 case XPT_TARGET_IO: 3074 case XPT_CONT_TARGET_IO: 3075 start_ccb->csio.sense_resid = 0; 3076 start_ccb->csio.resid = 0; 3077 /* FALLTHROUGH */ 3078 case XPT_RESET_DEV: 3079 case XPT_ENG_EXEC: 3080 { 3081 struct cam_path *path; 3082 struct cam_sim *sim; 3083 int s; 3084 int runq; 3085 3086 path = start_ccb->ccb_h.path; 3087 s = splsoftcam(); 3088 3089 sim = path->bus->sim; 3090 if (SIM_DEAD(sim)) { 3091 /* The SIM has gone; just execute the CCB directly. */ 3092 cam_ccbq_send_ccb(&path->device->ccbq, start_ccb); 3093 (*(sim->sim_action))(sim, start_ccb); 3094 splx(s); 3095 break; 3096 } 3097 3098 cam_ccbq_insert_ccb(&path->device->ccbq, start_ccb); 3099 if (path->device->qfrozen_cnt == 0) 3100 runq = xpt_schedule_dev_sendq(path->bus, path->device); 3101 else 3102 runq = 0; 3103 splx(s); 3104 if (runq != 0) 3105 xpt_run_dev_sendq(path->bus); 3106 break; 3107 } 3108 case XPT_SET_TRAN_SETTINGS: 3109 { 3110 xpt_set_transfer_settings(&start_ccb->cts, 3111 start_ccb->ccb_h.path->device, 3112 /*async_update*/FALSE); 3113 break; 3114 } 3115 case XPT_CALC_GEOMETRY: 3116 { 3117 struct cam_sim *sim; 3118 3119 /* Filter out garbage */ 3120 if (start_ccb->ccg.block_size == 0 3121 || start_ccb->ccg.volume_size == 0) { 3122 start_ccb->ccg.cylinders = 0; 3123 start_ccb->ccg.heads = 0; 3124 start_ccb->ccg.secs_per_track = 0; 3125 start_ccb->ccb_h.status = CAM_REQ_CMP; 3126 break; 3127 } 3128 #ifdef PC98 3129 /* 3130 * In a PC-98 system, geometry translation depens on 3131 * the "real" device geometry obtained from mode page 4. 3132 * SCSI geometry translation is performed in the 3133 * initialization routine of the SCSI BIOS and the result 3134 * stored in host memory. If the translation is available 3135 * in host memory, use it. If not, rely on the default 3136 * translation the device driver performs. 3137 */ 3138 if (scsi_da_bios_params(&start_ccb->ccg) != 0) { 3139 start_ccb->ccb_h.status = CAM_REQ_CMP; 3140 break; 3141 } 3142 #endif 3143 sim = start_ccb->ccb_h.path->bus->sim; 3144 (*(sim->sim_action))(sim, start_ccb); 3145 break; 3146 } 3147 case XPT_ABORT: 3148 { 3149 union ccb* abort_ccb; 3150 int s; 3151 3152 abort_ccb = start_ccb->cab.abort_ccb; 3153 if (XPT_FC_IS_DEV_QUEUED(abort_ccb)) { 3154 3155 if (abort_ccb->ccb_h.pinfo.index >= 0) { 3156 struct cam_ccbq *ccbq; 3157 3158 ccbq = &abort_ccb->ccb_h.path->device->ccbq; 3159 cam_ccbq_remove_ccb(ccbq, abort_ccb); 3160 abort_ccb->ccb_h.status = 3161 CAM_REQ_ABORTED|CAM_DEV_QFRZN; 3162 xpt_freeze_devq(abort_ccb->ccb_h.path, 1); 3163 s = splcam(); 3164 xpt_done(abort_ccb); 3165 splx(s); 3166 start_ccb->ccb_h.status = CAM_REQ_CMP; 3167 break; 3168 } 3169 if (abort_ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX 3170 && (abort_ccb->ccb_h.status & CAM_SIM_QUEUED) == 0) { 3171 /* 3172 * We've caught this ccb en route to 3173 * the SIM. Flag it for abort and the 3174 * SIM will do so just before starting 3175 * real work on the CCB. 3176 */ 3177 abort_ccb->ccb_h.status = 3178 CAM_REQ_ABORTED|CAM_DEV_QFRZN; 3179 xpt_freeze_devq(abort_ccb->ccb_h.path, 1); 3180 start_ccb->ccb_h.status = CAM_REQ_CMP; 3181 break; 3182 } 3183 } 3184 if (XPT_FC_IS_QUEUED(abort_ccb) 3185 && (abort_ccb->ccb_h.pinfo.index == CAM_DONEQ_INDEX)) { 3186 /* 3187 * It's already completed but waiting 3188 * for our SWI to get to it. 3189 */ 3190 start_ccb->ccb_h.status = CAM_UA_ABORT; 3191 break; 3192 } 3193 /* 3194 * If we weren't able to take care of the abort request 3195 * in the XPT, pass the request down to the SIM for processing. 3196 */ 3197 } 3198 /* FALLTHROUGH */ 3199 case XPT_ACCEPT_TARGET_IO: 3200 case XPT_EN_LUN: 3201 case XPT_IMMED_NOTIFY: 3202 case XPT_NOTIFY_ACK: 3203 case XPT_GET_TRAN_SETTINGS: 3204 case XPT_RESET_BUS: 3205 { 3206 struct cam_sim *sim; 3207 3208 sim = start_ccb->ccb_h.path->bus->sim; 3209 (*(sim->sim_action))(sim, start_ccb); 3210 break; 3211 } 3212 case XPT_PATH_INQ: 3213 { 3214 struct cam_sim *sim; 3215 3216 sim = start_ccb->ccb_h.path->bus->sim; 3217 (*(sim->sim_action))(sim, start_ccb); 3218 break; 3219 } 3220 case XPT_PATH_STATS: 3221 start_ccb->cpis.last_reset = 3222 start_ccb->ccb_h.path->bus->last_reset; 3223 start_ccb->ccb_h.status = CAM_REQ_CMP; 3224 break; 3225 case XPT_GDEV_TYPE: 3226 { 3227 struct cam_ed *dev; 3228 int s; 3229 3230 dev = start_ccb->ccb_h.path->device; 3231 s = splcam(); 3232 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) { 3233 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE; 3234 } else { 3235 struct ccb_getdev *cgd; 3236 struct cam_eb *bus; 3237 struct cam_et *tar; 3238 3239 cgd = &start_ccb->cgd; 3240 bus = cgd->ccb_h.path->bus; 3241 tar = cgd->ccb_h.path->target; 3242 cgd->inq_data = dev->inq_data; 3243 cgd->ccb_h.status = CAM_REQ_CMP; 3244 cgd->serial_num_len = dev->serial_num_len; 3245 if ((dev->serial_num_len > 0) 3246 && (dev->serial_num != NULL)) 3247 bcopy(dev->serial_num, cgd->serial_num, 3248 dev->serial_num_len); 3249 } 3250 splx(s); 3251 break; 3252 } 3253 case XPT_GDEV_STATS: 3254 { 3255 struct cam_ed *dev; 3256 int s; 3257 3258 dev = start_ccb->ccb_h.path->device; 3259 s = splcam(); 3260 if ((dev->flags & CAM_DEV_UNCONFIGURED) != 0) { 3261 start_ccb->ccb_h.status = CAM_DEV_NOT_THERE; 3262 } else { 3263 struct ccb_getdevstats *cgds; 3264 struct cam_eb *bus; 3265 struct cam_et *tar; 3266 3267 cgds = &start_ccb->cgds; 3268 bus = cgds->ccb_h.path->bus; 3269 tar = cgds->ccb_h.path->target; 3270 cgds->dev_openings = dev->ccbq.dev_openings; 3271 cgds->dev_active = dev->ccbq.dev_active; 3272 cgds->devq_openings = dev->ccbq.devq_openings; 3273 cgds->devq_queued = dev->ccbq.queue.entries; 3274 cgds->held = dev->ccbq.held; 3275 cgds->last_reset = tar->last_reset; 3276 cgds->maxtags = dev->quirk->maxtags; 3277 cgds->mintags = dev->quirk->mintags; 3278 if (timevalcmp(&tar->last_reset, &bus->last_reset, <)) 3279 cgds->last_reset = bus->last_reset; 3280 cgds->ccb_h.status = CAM_REQ_CMP; 3281 } 3282 splx(s); 3283 break; 3284 } 3285 case XPT_GDEVLIST: 3286 { 3287 struct cam_periph *nperiph; 3288 struct periph_list *periph_head; 3289 struct ccb_getdevlist *cgdl; 3290 u_int i; 3291 int s; 3292 struct cam_ed *device; 3293 int found; 3294 3295 3296 found = 0; 3297 3298 /* 3299 * Don't want anyone mucking with our data. 3300 */ 3301 s = splcam(); 3302 device = start_ccb->ccb_h.path->device; 3303 periph_head = &device->periphs; 3304 cgdl = &start_ccb->cgdl; 3305 3306 /* 3307 * Check and see if the list has changed since the user 3308 * last requested a list member. If so, tell them that the 3309 * list has changed, and therefore they need to start over 3310 * from the beginning. 3311 */ 3312 if ((cgdl->index != 0) && 3313 (cgdl->generation != device->generation)) { 3314 cgdl->status = CAM_GDEVLIST_LIST_CHANGED; 3315 splx(s); 3316 break; 3317 } 3318 3319 /* 3320 * Traverse the list of peripherals and attempt to find 3321 * the requested peripheral. 3322 */ 3323 for (nperiph = SLIST_FIRST(periph_head), i = 0; 3324 (nperiph != NULL) && (i <= cgdl->index); 3325 nperiph = SLIST_NEXT(nperiph, periph_links), i++) { 3326 if (i == cgdl->index) { 3327 strncpy(cgdl->periph_name, 3328 nperiph->periph_name, 3329 DEV_IDLEN); 3330 cgdl->unit_number = nperiph->unit_number; 3331 found = 1; 3332 } 3333 } 3334 if (found == 0) { 3335 cgdl->status = CAM_GDEVLIST_ERROR; 3336 splx(s); 3337 break; 3338 } 3339 3340 if (nperiph == NULL) 3341 cgdl->status = CAM_GDEVLIST_LAST_DEVICE; 3342 else 3343 cgdl->status = CAM_GDEVLIST_MORE_DEVS; 3344 3345 cgdl->index++; 3346 cgdl->generation = device->generation; 3347 3348 splx(s); 3349 cgdl->ccb_h.status = CAM_REQ_CMP; 3350 break; 3351 } 3352 case XPT_DEV_MATCH: 3353 { 3354 int s; 3355 dev_pos_type position_type; 3356 struct ccb_dev_match *cdm; 3357 3358 cdm = &start_ccb->cdm; 3359 3360 /* 3361 * Prevent EDT changes while we traverse it. 3362 */ 3363 s = splcam(); 3364 /* 3365 * There are two ways of getting at information in the EDT. 3366 * The first way is via the primary EDT tree. It starts 3367 * with a list of busses, then a list of targets on a bus, 3368 * then devices/luns on a target, and then peripherals on a 3369 * device/lun. The "other" way is by the peripheral driver 3370 * lists. The peripheral driver lists are organized by 3371 * peripheral driver. (obviously) So it makes sense to 3372 * use the peripheral driver list if the user is looking 3373 * for something like "da1", or all "da" devices. If the 3374 * user is looking for something on a particular bus/target 3375 * or lun, it's generally better to go through the EDT tree. 3376 */ 3377 3378 if (cdm->pos.position_type != CAM_DEV_POS_NONE) 3379 position_type = cdm->pos.position_type; 3380 else { 3381 u_int i; 3382 3383 position_type = CAM_DEV_POS_NONE; 3384 3385 for (i = 0; i < cdm->num_patterns; i++) { 3386 if ((cdm->patterns[i].type == DEV_MATCH_BUS) 3387 ||(cdm->patterns[i].type == DEV_MATCH_DEVICE)){ 3388 position_type = CAM_DEV_POS_EDT; 3389 break; 3390 } 3391 } 3392 3393 if (cdm->num_patterns == 0) 3394 position_type = CAM_DEV_POS_EDT; 3395 else if (position_type == CAM_DEV_POS_NONE) 3396 position_type = CAM_DEV_POS_PDRV; 3397 } 3398 3399 switch(position_type & CAM_DEV_POS_TYPEMASK) { 3400 case CAM_DEV_POS_EDT: 3401 xptedtmatch(cdm); 3402 break; 3403 case CAM_DEV_POS_PDRV: 3404 xptperiphlistmatch(cdm); 3405 break; 3406 default: 3407 cdm->status = CAM_DEV_MATCH_ERROR; 3408 break; 3409 } 3410 3411 splx(s); 3412 3413 if (cdm->status == CAM_DEV_MATCH_ERROR) 3414 start_ccb->ccb_h.status = CAM_REQ_CMP_ERR; 3415 else 3416 start_ccb->ccb_h.status = CAM_REQ_CMP; 3417 3418 break; 3419 } 3420 case XPT_SASYNC_CB: 3421 { 3422 struct ccb_setasync *csa; 3423 struct async_node *cur_entry; 3424 struct async_list *async_head; 3425 u_int32_t added; 3426 int s; 3427 3428 csa = &start_ccb->csa; 3429 added = csa->event_enable; 3430 async_head = &csa->ccb_h.path->device->asyncs; 3431 3432 /* 3433 * If there is already an entry for us, simply 3434 * update it. 3435 */ 3436 s = splcam(); 3437 cur_entry = SLIST_FIRST(async_head); 3438 while (cur_entry != NULL) { 3439 if ((cur_entry->callback_arg == csa->callback_arg) 3440 && (cur_entry->callback == csa->callback)) 3441 break; 3442 cur_entry = SLIST_NEXT(cur_entry, links); 3443 } 3444 3445 if (cur_entry != NULL) { 3446 /* 3447 * If the request has no flags set, 3448 * remove the entry. 3449 */ 3450 added &= ~cur_entry->event_enable; 3451 if (csa->event_enable == 0) { 3452 SLIST_REMOVE(async_head, cur_entry, 3453 async_node, links); 3454 csa->ccb_h.path->device->refcount--; 3455 free(cur_entry, M_CAMXPT); 3456 } else { 3457 cur_entry->event_enable = csa->event_enable; 3458 } 3459 } else { 3460 cur_entry = malloc(sizeof(*cur_entry), M_CAMXPT, 3461 M_NOWAIT); 3462 if (cur_entry == NULL) { 3463 splx(s); 3464 csa->ccb_h.status = CAM_RESRC_UNAVAIL; 3465 break; 3466 } 3467 cur_entry->event_enable = csa->event_enable; 3468 cur_entry->callback_arg = csa->callback_arg; 3469 cur_entry->callback = csa->callback; 3470 SLIST_INSERT_HEAD(async_head, cur_entry, links); 3471 csa->ccb_h.path->device->refcount++; 3472 } 3473 3474 if ((added & AC_FOUND_DEVICE) != 0) { 3475 /* 3476 * Get this peripheral up to date with all 3477 * the currently existing devices. 3478 */ 3479 xpt_for_all_devices(xptsetasyncfunc, cur_entry); 3480 } 3481 if ((added & AC_PATH_REGISTERED) != 0) { 3482 /* 3483 * Get this peripheral up to date with all 3484 * the currently existing busses. 3485 */ 3486 xpt_for_all_busses(xptsetasyncbusfunc, cur_entry); 3487 } 3488 splx(s); 3489 start_ccb->ccb_h.status = CAM_REQ_CMP; 3490 break; 3491 } 3492 case XPT_REL_SIMQ: 3493 { 3494 struct ccb_relsim *crs; 3495 struct cam_ed *dev; 3496 int s; 3497 3498 crs = &start_ccb->crs; 3499 dev = crs->ccb_h.path->device; 3500 if (dev == NULL) { 3501 3502 crs->ccb_h.status = CAM_DEV_NOT_THERE; 3503 break; 3504 } 3505 3506 s = splcam(); 3507 3508 if ((crs->release_flags & RELSIM_ADJUST_OPENINGS) != 0) { 3509 3510 if (INQ_DATA_TQ_ENABLED(&dev->inq_data)) { 3511 /* Don't ever go below one opening */ 3512 if (crs->openings > 0) { 3513 xpt_dev_ccbq_resize(crs->ccb_h.path, 3514 crs->openings); 3515 3516 if (bootverbose) { 3517 xpt_print_path(crs->ccb_h.path); 3518 printf("tagged openings " 3519 "now %d\n", 3520 crs->openings); 3521 } 3522 } 3523 } 3524 } 3525 3526 if ((crs->release_flags & RELSIM_RELEASE_AFTER_TIMEOUT) != 0) { 3527 3528 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) { 3529 3530 /* 3531 * Just extend the old timeout and decrement 3532 * the freeze count so that a single timeout 3533 * is sufficient for releasing the queue. 3534 */ 3535 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE; 3536 untimeout(xpt_release_devq_timeout, 3537 dev, dev->c_handle); 3538 } else { 3539 3540 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE; 3541 } 3542 3543 dev->c_handle = 3544 timeout(xpt_release_devq_timeout, 3545 dev, 3546 (crs->release_timeout * hz) / 1000); 3547 3548 dev->flags |= CAM_DEV_REL_TIMEOUT_PENDING; 3549 3550 } 3551 3552 if ((crs->release_flags & RELSIM_RELEASE_AFTER_CMDCMPLT) != 0) { 3553 3554 if ((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0) { 3555 /* 3556 * Decrement the freeze count so that a single 3557 * completion is still sufficient to unfreeze 3558 * the queue. 3559 */ 3560 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE; 3561 } else { 3562 3563 dev->flags |= CAM_DEV_REL_ON_COMPLETE; 3564 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE; 3565 } 3566 } 3567 3568 if ((crs->release_flags & RELSIM_RELEASE_AFTER_QEMPTY) != 0) { 3569 3570 if ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0 3571 || (dev->ccbq.dev_active == 0)) { 3572 3573 start_ccb->ccb_h.flags &= ~CAM_DEV_QFREEZE; 3574 } else { 3575 3576 dev->flags |= CAM_DEV_REL_ON_QUEUE_EMPTY; 3577 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE; 3578 } 3579 } 3580 splx(s); 3581 3582 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) == 0) { 3583 3584 xpt_release_devq(crs->ccb_h.path, /*count*/1, 3585 /*run_queue*/TRUE); 3586 } 3587 start_ccb->crs.qfrozen_cnt = dev->qfrozen_cnt; 3588 start_ccb->ccb_h.status = CAM_REQ_CMP; 3589 break; 3590 } 3591 case XPT_SCAN_BUS: 3592 xpt_scan_bus(start_ccb->ccb_h.path->periph, start_ccb); 3593 break; 3594 case XPT_SCAN_LUN: 3595 xpt_scan_lun(start_ccb->ccb_h.path->periph, 3596 start_ccb->ccb_h.path, start_ccb->crcn.flags, 3597 start_ccb); 3598 break; 3599 case XPT_DEBUG: { 3600 #ifdef CAMDEBUG 3601 int s; 3602 3603 s = splcam(); 3604 #ifdef CAM_DEBUG_DELAY 3605 cam_debug_delay = CAM_DEBUG_DELAY; 3606 #endif 3607 cam_dflags = start_ccb->cdbg.flags; 3608 if (cam_dpath != NULL) { 3609 xpt_free_path(cam_dpath); 3610 cam_dpath = NULL; 3611 } 3612 3613 if (cam_dflags != CAM_DEBUG_NONE) { 3614 if (xpt_create_path(&cam_dpath, xpt_periph, 3615 start_ccb->ccb_h.path_id, 3616 start_ccb->ccb_h.target_id, 3617 start_ccb->ccb_h.target_lun) != 3618 CAM_REQ_CMP) { 3619 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 3620 cam_dflags = CAM_DEBUG_NONE; 3621 } else { 3622 start_ccb->ccb_h.status = CAM_REQ_CMP; 3623 xpt_print_path(cam_dpath); 3624 printf("debugging flags now %x\n", cam_dflags); 3625 } 3626 } else { 3627 cam_dpath = NULL; 3628 start_ccb->ccb_h.status = CAM_REQ_CMP; 3629 } 3630 splx(s); 3631 #else /* !CAMDEBUG */ 3632 start_ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 3633 #endif /* CAMDEBUG */ 3634 break; 3635 } 3636 case XPT_NOOP: 3637 if ((start_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0) 3638 xpt_freeze_devq(start_ccb->ccb_h.path, 1); 3639 start_ccb->ccb_h.status = CAM_REQ_CMP; 3640 break; 3641 default: 3642 case XPT_SDEV_TYPE: 3643 case XPT_TERM_IO: 3644 case XPT_ENG_INQ: 3645 /* XXX Implement */ 3646 start_ccb->ccb_h.status = CAM_PROVIDE_FAIL; 3647 break; 3648 } 3649 splx(iopl); 3650 } 3651 3652 void 3653 xpt_polled_action(union ccb *start_ccb) 3654 { 3655 int s; 3656 u_int32_t timeout; 3657 struct cam_sim *sim; 3658 struct cam_devq *devq; 3659 struct cam_ed *dev; 3660 3661 GIANT_REQUIRED; 3662 3663 timeout = start_ccb->ccb_h.timeout; 3664 sim = start_ccb->ccb_h.path->bus->sim; 3665 devq = sim->devq; 3666 dev = start_ccb->ccb_h.path->device; 3667 3668 s = splcam(); 3669 3670 /* 3671 * Steal an opening so that no other queued requests 3672 * can get it before us while we simulate interrupts. 3673 */ 3674 dev->ccbq.devq_openings--; 3675 dev->ccbq.dev_openings--; 3676 3677 while(((devq != NULL && devq->send_openings <= 0) || 3678 dev->ccbq.dev_openings < 0) && (--timeout > 0)) { 3679 DELAY(1000); 3680 (*(sim->sim_poll))(sim); 3681 camisr(&cam_bioq); 3682 } 3683 3684 dev->ccbq.devq_openings++; 3685 dev->ccbq.dev_openings++; 3686 3687 if (timeout != 0) { 3688 xpt_action(start_ccb); 3689 while(--timeout > 0) { 3690 (*(sim->sim_poll))(sim); 3691 camisr(&cam_bioq); 3692 if ((start_ccb->ccb_h.status & CAM_STATUS_MASK) 3693 != CAM_REQ_INPROG) 3694 break; 3695 DELAY(1000); 3696 } 3697 if (timeout == 0) { 3698 /* 3699 * XXX Is it worth adding a sim_timeout entry 3700 * point so we can attempt recovery? If 3701 * this is only used for dumps, I don't think 3702 * it is. 3703 */ 3704 start_ccb->ccb_h.status = CAM_CMD_TIMEOUT; 3705 } 3706 } else { 3707 start_ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 3708 } 3709 splx(s); 3710 } 3711 3712 /* 3713 * Schedule a peripheral driver to receive a ccb when it's 3714 * target device has space for more transactions. 3715 */ 3716 void 3717 xpt_schedule(struct cam_periph *perph, u_int32_t new_priority) 3718 { 3719 struct cam_ed *device; 3720 union ccb *work_ccb; 3721 int s; 3722 int runq; 3723 3724 GIANT_REQUIRED; 3725 3726 CAM_DEBUG(perph->path, CAM_DEBUG_TRACE, ("xpt_schedule\n")); 3727 device = perph->path->device; 3728 s = splsoftcam(); 3729 if (periph_is_queued(perph)) { 3730 /* Simply reorder based on new priority */ 3731 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE, 3732 (" change priority to %d\n", new_priority)); 3733 if (new_priority < perph->pinfo.priority) { 3734 camq_change_priority(&device->drvq, 3735 perph->pinfo.index, 3736 new_priority); 3737 } 3738 runq = 0; 3739 } else if (SIM_DEAD(perph->path->bus->sim)) { 3740 /* The SIM is gone so just call periph_start directly. */ 3741 work_ccb = xpt_get_ccb(perph->path->device); 3742 splx(s); 3743 if (work_ccb == NULL) 3744 return; /* XXX */ 3745 xpt_setup_ccb(&work_ccb->ccb_h, perph->path, new_priority); 3746 perph->pinfo.priority = new_priority; 3747 perph->periph_start(perph, work_ccb); 3748 return; 3749 } else { 3750 /* New entry on the queue */ 3751 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE, 3752 (" added periph to queue\n")); 3753 perph->pinfo.priority = new_priority; 3754 perph->pinfo.generation = ++device->drvq.generation; 3755 camq_insert(&device->drvq, &perph->pinfo); 3756 runq = xpt_schedule_dev_allocq(perph->path->bus, device); 3757 } 3758 splx(s); 3759 if (runq != 0) { 3760 CAM_DEBUG(perph->path, CAM_DEBUG_SUBTRACE, 3761 (" calling xpt_run_devq\n")); 3762 xpt_run_dev_allocq(perph->path->bus); 3763 } 3764 } 3765 3766 3767 /* 3768 * Schedule a device to run on a given queue. 3769 * If the device was inserted as a new entry on the queue, 3770 * return 1 meaning the device queue should be run. If we 3771 * were already queued, implying someone else has already 3772 * started the queue, return 0 so the caller doesn't attempt 3773 * to run the queue. Must be run at either splsoftcam 3774 * (or splcam since that encompases splsoftcam). 3775 */ 3776 static int 3777 xpt_schedule_dev(struct camq *queue, cam_pinfo *pinfo, 3778 u_int32_t new_priority) 3779 { 3780 int retval; 3781 u_int32_t old_priority; 3782 3783 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_schedule_dev\n")); 3784 3785 old_priority = pinfo->priority; 3786 3787 /* 3788 * Are we already queued? 3789 */ 3790 if (pinfo->index != CAM_UNQUEUED_INDEX) { 3791 /* Simply reorder based on new priority */ 3792 if (new_priority < old_priority) { 3793 camq_change_priority(queue, pinfo->index, 3794 new_priority); 3795 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3796 ("changed priority to %d\n", 3797 new_priority)); 3798 } 3799 retval = 0; 3800 } else { 3801 /* New entry on the queue */ 3802 if (new_priority < old_priority) 3803 pinfo->priority = new_priority; 3804 3805 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3806 ("Inserting onto queue\n")); 3807 pinfo->generation = ++queue->generation; 3808 camq_insert(queue, pinfo); 3809 retval = 1; 3810 } 3811 return (retval); 3812 } 3813 3814 static void 3815 xpt_run_dev_allocq(struct cam_eb *bus) 3816 { 3817 struct cam_devq *devq; 3818 int s; 3819 3820 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_allocq\n")); 3821 devq = bus->sim->devq; 3822 3823 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3824 (" qfrozen_cnt == 0x%x, entries == %d, " 3825 "openings == %d, active == %d\n", 3826 devq->alloc_queue.qfrozen_cnt, 3827 devq->alloc_queue.entries, 3828 devq->alloc_openings, 3829 devq->alloc_active)); 3830 3831 s = splsoftcam(); 3832 devq->alloc_queue.qfrozen_cnt++; 3833 while ((devq->alloc_queue.entries > 0) 3834 && (devq->alloc_openings > 0) 3835 && (devq->alloc_queue.qfrozen_cnt <= 1)) { 3836 struct cam_ed_qinfo *qinfo; 3837 struct cam_ed *device; 3838 union ccb *work_ccb; 3839 struct cam_periph *drv; 3840 struct camq *drvq; 3841 3842 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue, 3843 CAMQ_HEAD); 3844 device = qinfo->device; 3845 3846 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3847 ("running device %p\n", device)); 3848 3849 drvq = &device->drvq; 3850 3851 #ifdef CAMDEBUG 3852 if (drvq->entries <= 0) { 3853 panic("xpt_run_dev_allocq: " 3854 "Device on queue without any work to do"); 3855 } 3856 #endif 3857 if ((work_ccb = xpt_get_ccb(device)) != NULL) { 3858 devq->alloc_openings--; 3859 devq->alloc_active++; 3860 drv = (struct cam_periph*)camq_remove(drvq, CAMQ_HEAD); 3861 splx(s); 3862 xpt_setup_ccb(&work_ccb->ccb_h, drv->path, 3863 drv->pinfo.priority); 3864 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3865 ("calling periph start\n")); 3866 drv->periph_start(drv, work_ccb); 3867 } else { 3868 /* 3869 * Malloc failure in alloc_ccb 3870 */ 3871 /* 3872 * XXX add us to a list to be run from free_ccb 3873 * if we don't have any ccbs active on this 3874 * device queue otherwise we may never get run 3875 * again. 3876 */ 3877 break; 3878 } 3879 3880 /* Raise IPL for possible insertion and test at top of loop */ 3881 s = splsoftcam(); 3882 3883 if (drvq->entries > 0) { 3884 /* We have more work. Attempt to reschedule */ 3885 xpt_schedule_dev_allocq(bus, device); 3886 } 3887 } 3888 devq->alloc_queue.qfrozen_cnt--; 3889 splx(s); 3890 } 3891 3892 static void 3893 xpt_run_dev_sendq(struct cam_eb *bus) 3894 { 3895 struct cam_devq *devq; 3896 int s; 3897 3898 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_run_dev_sendq\n")); 3899 3900 devq = bus->sim->devq; 3901 3902 s = splcam(); 3903 devq->send_queue.qfrozen_cnt++; 3904 splx(s); 3905 s = splsoftcam(); 3906 while ((devq->send_queue.entries > 0) 3907 && (devq->send_openings > 0)) { 3908 struct cam_ed_qinfo *qinfo; 3909 struct cam_ed *device; 3910 union ccb *work_ccb; 3911 struct cam_sim *sim; 3912 int ospl; 3913 3914 ospl = splcam(); 3915 if (devq->send_queue.qfrozen_cnt > 1) { 3916 splx(ospl); 3917 break; 3918 } 3919 3920 qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue, 3921 CAMQ_HEAD); 3922 device = qinfo->device; 3923 3924 /* 3925 * If the device has been "frozen", don't attempt 3926 * to run it. 3927 */ 3928 if (device->qfrozen_cnt > 0) { 3929 splx(ospl); 3930 continue; 3931 } 3932 3933 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, 3934 ("running device %p\n", device)); 3935 3936 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD); 3937 if (work_ccb == NULL) { 3938 printf("device on run queue with no ccbs???\n"); 3939 splx(ospl); 3940 continue; 3941 } 3942 3943 if ((work_ccb->ccb_h.flags & CAM_HIGH_POWER) != 0) { 3944 3945 if (num_highpower <= 0) { 3946 /* 3947 * We got a high power command, but we 3948 * don't have any available slots. Freeze 3949 * the device queue until we have a slot 3950 * available. 3951 */ 3952 device->qfrozen_cnt++; 3953 STAILQ_INSERT_TAIL(&highpowerq, 3954 &work_ccb->ccb_h, 3955 xpt_links.stqe); 3956 3957 splx(ospl); 3958 continue; 3959 } else { 3960 /* 3961 * Consume a high power slot while 3962 * this ccb runs. 3963 */ 3964 num_highpower--; 3965 } 3966 } 3967 devq->active_dev = device; 3968 cam_ccbq_remove_ccb(&device->ccbq, work_ccb); 3969 3970 cam_ccbq_send_ccb(&device->ccbq, work_ccb); 3971 splx(ospl); 3972 3973 devq->send_openings--; 3974 devq->send_active++; 3975 3976 if (device->ccbq.queue.entries > 0) 3977 xpt_schedule_dev_sendq(bus, device); 3978 3979 if (work_ccb && (work_ccb->ccb_h.flags & CAM_DEV_QFREEZE) != 0){ 3980 /* 3981 * The client wants to freeze the queue 3982 * after this CCB is sent. 3983 */ 3984 ospl = splcam(); 3985 device->qfrozen_cnt++; 3986 splx(ospl); 3987 } 3988 3989 splx(s); 3990 3991 /* In Target mode, the peripheral driver knows best... */ 3992 if (work_ccb->ccb_h.func_code == XPT_SCSI_IO) { 3993 if ((device->inq_flags & SID_CmdQue) != 0 3994 && work_ccb->csio.tag_action != CAM_TAG_ACTION_NONE) 3995 work_ccb->ccb_h.flags |= CAM_TAG_ACTION_VALID; 3996 else 3997 /* 3998 * Clear this in case of a retried CCB that 3999 * failed due to a rejected tag. 4000 */ 4001 work_ccb->ccb_h.flags &= ~CAM_TAG_ACTION_VALID; 4002 } 4003 4004 /* 4005 * Device queues can be shared among multiple sim instances 4006 * that reside on different busses. Use the SIM in the queue 4007 * CCB's path, rather than the one in the bus that was passed 4008 * into this function. 4009 */ 4010 sim = work_ccb->ccb_h.path->bus->sim; 4011 (*(sim->sim_action))(sim, work_ccb); 4012 4013 ospl = splcam(); 4014 devq->active_dev = NULL; 4015 splx(ospl); 4016 /* Raise IPL for possible insertion and test at top of loop */ 4017 s = splsoftcam(); 4018 } 4019 splx(s); 4020 s = splcam(); 4021 devq->send_queue.qfrozen_cnt--; 4022 splx(s); 4023 } 4024 4025 /* 4026 * This function merges stuff from the slave ccb into the master ccb, while 4027 * keeping important fields in the master ccb constant. 4028 */ 4029 void 4030 xpt_merge_ccb(union ccb *master_ccb, union ccb *slave_ccb) 4031 { 4032 GIANT_REQUIRED; 4033 4034 /* 4035 * Pull fields that are valid for peripheral drivers to set 4036 * into the master CCB along with the CCB "payload". 4037 */ 4038 master_ccb->ccb_h.retry_count = slave_ccb->ccb_h.retry_count; 4039 master_ccb->ccb_h.func_code = slave_ccb->ccb_h.func_code; 4040 master_ccb->ccb_h.timeout = slave_ccb->ccb_h.timeout; 4041 master_ccb->ccb_h.flags = slave_ccb->ccb_h.flags; 4042 bcopy(&(&slave_ccb->ccb_h)[1], &(&master_ccb->ccb_h)[1], 4043 sizeof(union ccb) - sizeof(struct ccb_hdr)); 4044 } 4045 4046 void 4047 xpt_setup_ccb(struct ccb_hdr *ccb_h, struct cam_path *path, u_int32_t priority) 4048 { 4049 GIANT_REQUIRED; 4050 4051 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_setup_ccb\n")); 4052 ccb_h->pinfo.priority = priority; 4053 ccb_h->path = path; 4054 ccb_h->path_id = path->bus->path_id; 4055 if (path->target) 4056 ccb_h->target_id = path->target->target_id; 4057 else 4058 ccb_h->target_id = CAM_TARGET_WILDCARD; 4059 if (path->device) { 4060 ccb_h->target_lun = path->device->lun_id; 4061 ccb_h->pinfo.generation = ++path->device->ccbq.queue.generation; 4062 } else { 4063 ccb_h->target_lun = CAM_TARGET_WILDCARD; 4064 } 4065 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX; 4066 ccb_h->flags = 0; 4067 } 4068 4069 /* Path manipulation functions */ 4070 cam_status 4071 xpt_create_path(struct cam_path **new_path_ptr, struct cam_periph *perph, 4072 path_id_t path_id, target_id_t target_id, lun_id_t lun_id) 4073 { 4074 struct cam_path *path; 4075 cam_status status; 4076 4077 GIANT_REQUIRED; 4078 4079 path = (struct cam_path *)malloc(sizeof(*path), M_CAMXPT, M_NOWAIT); 4080 4081 if (path == NULL) { 4082 status = CAM_RESRC_UNAVAIL; 4083 return(status); 4084 } 4085 status = xpt_compile_path(path, perph, path_id, target_id, lun_id); 4086 if (status != CAM_REQ_CMP) { 4087 free(path, M_CAMXPT); 4088 path = NULL; 4089 } 4090 *new_path_ptr = path; 4091 return (status); 4092 } 4093 4094 static cam_status 4095 xpt_compile_path(struct cam_path *new_path, struct cam_periph *perph, 4096 path_id_t path_id, target_id_t target_id, lun_id_t lun_id) 4097 { 4098 struct cam_eb *bus; 4099 struct cam_et *target; 4100 struct cam_ed *device; 4101 cam_status status; 4102 int s; 4103 4104 status = CAM_REQ_CMP; /* Completed without error */ 4105 target = NULL; /* Wildcarded */ 4106 device = NULL; /* Wildcarded */ 4107 4108 /* 4109 * We will potentially modify the EDT, so block interrupts 4110 * that may attempt to create cam paths. 4111 */ 4112 s = splcam(); 4113 bus = xpt_find_bus(path_id); 4114 if (bus == NULL) { 4115 status = CAM_PATH_INVALID; 4116 } else { 4117 target = xpt_find_target(bus, target_id); 4118 if (target == NULL) { 4119 /* Create one */ 4120 struct cam_et *new_target; 4121 4122 new_target = xpt_alloc_target(bus, target_id); 4123 if (new_target == NULL) { 4124 status = CAM_RESRC_UNAVAIL; 4125 } else { 4126 target = new_target; 4127 } 4128 } 4129 if (target != NULL) { 4130 device = xpt_find_device(target, lun_id); 4131 if (device == NULL) { 4132 /* Create one */ 4133 struct cam_ed *new_device; 4134 4135 new_device = xpt_alloc_device(bus, 4136 target, 4137 lun_id); 4138 if (new_device == NULL) { 4139 status = CAM_RESRC_UNAVAIL; 4140 } else { 4141 device = new_device; 4142 } 4143 } 4144 } 4145 } 4146 splx(s); 4147 4148 /* 4149 * Only touch the user's data if we are successful. 4150 */ 4151 if (status == CAM_REQ_CMP) { 4152 new_path->periph = perph; 4153 new_path->bus = bus; 4154 new_path->target = target; 4155 new_path->device = device; 4156 CAM_DEBUG(new_path, CAM_DEBUG_TRACE, ("xpt_compile_path\n")); 4157 } else { 4158 if (device != NULL) 4159 xpt_release_device(bus, target, device); 4160 if (target != NULL) 4161 xpt_release_target(bus, target); 4162 if (bus != NULL) 4163 xpt_release_bus(bus); 4164 } 4165 return (status); 4166 } 4167 4168 static void 4169 xpt_release_path(struct cam_path *path) 4170 { 4171 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_release_path\n")); 4172 if (path->device != NULL) { 4173 xpt_release_device(path->bus, path->target, path->device); 4174 path->device = NULL; 4175 } 4176 if (path->target != NULL) { 4177 xpt_release_target(path->bus, path->target); 4178 path->target = NULL; 4179 } 4180 if (path->bus != NULL) { 4181 xpt_release_bus(path->bus); 4182 path->bus = NULL; 4183 } 4184 } 4185 4186 void 4187 xpt_free_path(struct cam_path *path) 4188 { 4189 GIANT_REQUIRED; 4190 4191 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_free_path\n")); 4192 xpt_release_path(path); 4193 free(path, M_CAMXPT); 4194 } 4195 4196 4197 /* 4198 * Return -1 for failure, 0 for exact match, 1 for match with wildcards 4199 * in path1, 2 for match with wildcards in path2. 4200 */ 4201 int 4202 xpt_path_comp(struct cam_path *path1, struct cam_path *path2) 4203 { 4204 GIANT_REQUIRED; 4205 4206 int retval = 0; 4207 4208 if (path1->bus != path2->bus) { 4209 if (path1->bus->path_id == CAM_BUS_WILDCARD) 4210 retval = 1; 4211 else if (path2->bus->path_id == CAM_BUS_WILDCARD) 4212 retval = 2; 4213 else 4214 return (-1); 4215 } 4216 if (path1->target != path2->target) { 4217 if (path1->target->target_id == CAM_TARGET_WILDCARD) { 4218 if (retval == 0) 4219 retval = 1; 4220 } else if (path2->target->target_id == CAM_TARGET_WILDCARD) 4221 retval = 2; 4222 else 4223 return (-1); 4224 } 4225 if (path1->device != path2->device) { 4226 if (path1->device->lun_id == CAM_LUN_WILDCARD) { 4227 if (retval == 0) 4228 retval = 1; 4229 } else if (path2->device->lun_id == CAM_LUN_WILDCARD) 4230 retval = 2; 4231 else 4232 return (-1); 4233 } 4234 return (retval); 4235 } 4236 4237 void 4238 xpt_print_path(struct cam_path *path) 4239 { 4240 GIANT_REQUIRED; 4241 4242 if (path == NULL) 4243 printf("(nopath): "); 4244 else { 4245 if (path->periph != NULL) 4246 printf("(%s%d:", path->periph->periph_name, 4247 path->periph->unit_number); 4248 else 4249 printf("(noperiph:"); 4250 4251 if (path->bus != NULL) 4252 printf("%s%d:%d:", path->bus->sim->sim_name, 4253 path->bus->sim->unit_number, 4254 path->bus->sim->bus_id); 4255 else 4256 printf("nobus:"); 4257 4258 if (path->target != NULL) 4259 printf("%d:", path->target->target_id); 4260 else 4261 printf("X:"); 4262 4263 if (path->device != NULL) 4264 printf("%d): ", path->device->lun_id); 4265 else 4266 printf("X): "); 4267 } 4268 } 4269 4270 int 4271 xpt_path_string(struct cam_path *path, char *str, size_t str_len) 4272 { 4273 struct sbuf sb; 4274 4275 GIANT_REQUIRED; 4276 4277 sbuf_new(&sb, str, str_len, 0); 4278 4279 if (path == NULL) 4280 sbuf_printf(&sb, "(nopath): "); 4281 else { 4282 if (path->periph != NULL) 4283 sbuf_printf(&sb, "(%s%d:", path->periph->periph_name, 4284 path->periph->unit_number); 4285 else 4286 sbuf_printf(&sb, "(noperiph:"); 4287 4288 if (path->bus != NULL) 4289 sbuf_printf(&sb, "%s%d:%d:", path->bus->sim->sim_name, 4290 path->bus->sim->unit_number, 4291 path->bus->sim->bus_id); 4292 else 4293 sbuf_printf(&sb, "nobus:"); 4294 4295 if (path->target != NULL) 4296 sbuf_printf(&sb, "%d:", path->target->target_id); 4297 else 4298 sbuf_printf(&sb, "X:"); 4299 4300 if (path->device != NULL) 4301 sbuf_printf(&sb, "%d): ", path->device->lun_id); 4302 else 4303 sbuf_printf(&sb, "X): "); 4304 } 4305 sbuf_finish(&sb); 4306 4307 return(sbuf_len(&sb)); 4308 } 4309 4310 path_id_t 4311 xpt_path_path_id(struct cam_path *path) 4312 { 4313 GIANT_REQUIRED; 4314 4315 return(path->bus->path_id); 4316 } 4317 4318 target_id_t 4319 xpt_path_target_id(struct cam_path *path) 4320 { 4321 GIANT_REQUIRED; 4322 4323 if (path->target != NULL) 4324 return (path->target->target_id); 4325 else 4326 return (CAM_TARGET_WILDCARD); 4327 } 4328 4329 lun_id_t 4330 xpt_path_lun_id(struct cam_path *path) 4331 { 4332 GIANT_REQUIRED; 4333 4334 if (path->device != NULL) 4335 return (path->device->lun_id); 4336 else 4337 return (CAM_LUN_WILDCARD); 4338 } 4339 4340 struct cam_sim * 4341 xpt_path_sim(struct cam_path *path) 4342 { 4343 GIANT_REQUIRED; 4344 4345 return (path->bus->sim); 4346 } 4347 4348 struct cam_periph* 4349 xpt_path_periph(struct cam_path *path) 4350 { 4351 GIANT_REQUIRED; 4352 4353 return (path->periph); 4354 } 4355 4356 /* 4357 * Release a CAM control block for the caller. Remit the cost of the structure 4358 * to the device referenced by the path. If the this device had no 'credits' 4359 * and peripheral drivers have registered async callbacks for this notification 4360 * call them now. 4361 */ 4362 void 4363 xpt_release_ccb(union ccb *free_ccb) 4364 { 4365 int s; 4366 struct cam_path *path; 4367 struct cam_ed *device; 4368 struct cam_eb *bus; 4369 4370 GIANT_REQUIRED; 4371 4372 CAM_DEBUG_PRINT(CAM_DEBUG_XPT, ("xpt_release_ccb\n")); 4373 path = free_ccb->ccb_h.path; 4374 device = path->device; 4375 bus = path->bus; 4376 s = splsoftcam(); 4377 cam_ccbq_release_opening(&device->ccbq); 4378 if (xpt_ccb_count > xpt_max_ccbs) { 4379 xpt_free_ccb(free_ccb); 4380 xpt_ccb_count--; 4381 } else { 4382 SLIST_INSERT_HEAD(&ccb_freeq, &free_ccb->ccb_h, xpt_links.sle); 4383 } 4384 if (bus->sim->devq == NULL) { 4385 splx(s); 4386 return; 4387 } 4388 bus->sim->devq->alloc_openings++; 4389 bus->sim->devq->alloc_active--; 4390 /* XXX Turn this into an inline function - xpt_run_device?? */ 4391 if ((device_is_alloc_queued(device) == 0) 4392 && (device->drvq.entries > 0)) { 4393 xpt_schedule_dev_allocq(bus, device); 4394 } 4395 splx(s); 4396 if (dev_allocq_is_runnable(bus->sim->devq)) 4397 xpt_run_dev_allocq(bus); 4398 } 4399 4400 /* Functions accessed by SIM drivers */ 4401 4402 /* 4403 * A sim structure, listing the SIM entry points and instance 4404 * identification info is passed to xpt_bus_register to hook the SIM 4405 * into the CAM framework. xpt_bus_register creates a cam_eb entry 4406 * for this new bus and places it in the array of busses and assigns 4407 * it a path_id. The path_id may be influenced by "hard wiring" 4408 * information specified by the user. Once interrupt services are 4409 * availible, the bus will be probed. 4410 */ 4411 int32_t 4412 xpt_bus_register(struct cam_sim *sim, u_int32_t bus) 4413 { 4414 struct cam_eb *new_bus; 4415 struct cam_eb *old_bus; 4416 struct ccb_pathinq cpi; 4417 int s; 4418 4419 GIANT_REQUIRED; 4420 4421 sim->bus_id = bus; 4422 new_bus = (struct cam_eb *)malloc(sizeof(*new_bus), 4423 M_CAMXPT, M_NOWAIT); 4424 if (new_bus == NULL) { 4425 /* Couldn't satisfy request */ 4426 return (CAM_RESRC_UNAVAIL); 4427 } 4428 4429 if (strcmp(sim->sim_name, "xpt") != 0) { 4430 4431 sim->path_id = 4432 xptpathid(sim->sim_name, sim->unit_number, sim->bus_id); 4433 } 4434 4435 TAILQ_INIT(&new_bus->et_entries); 4436 new_bus->path_id = sim->path_id; 4437 new_bus->sim = sim; 4438 timevalclear(&new_bus->last_reset); 4439 new_bus->flags = 0; 4440 new_bus->refcount = 1; /* Held until a bus_deregister event */ 4441 new_bus->generation = 0; 4442 s = splcam(); 4443 old_bus = TAILQ_FIRST(&xpt_busses); 4444 while (old_bus != NULL 4445 && old_bus->path_id < new_bus->path_id) 4446 old_bus = TAILQ_NEXT(old_bus, links); 4447 if (old_bus != NULL) 4448 TAILQ_INSERT_BEFORE(old_bus, new_bus, links); 4449 else 4450 TAILQ_INSERT_TAIL(&xpt_busses, new_bus, links); 4451 bus_generation++; 4452 splx(s); 4453 4454 /* Notify interested parties */ 4455 if (sim->path_id != CAM_XPT_PATH_ID) { 4456 struct cam_path path; 4457 4458 xpt_compile_path(&path, /*periph*/NULL, sim->path_id, 4459 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 4460 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1); 4461 cpi.ccb_h.func_code = XPT_PATH_INQ; 4462 xpt_action((union ccb *)&cpi); 4463 xpt_async(AC_PATH_REGISTERED, &path, &cpi); 4464 xpt_release_path(&path); 4465 } 4466 return (CAM_SUCCESS); 4467 } 4468 4469 int32_t 4470 xpt_bus_deregister(path_id_t pathid) 4471 { 4472 struct cam_path bus_path; 4473 struct cam_ed *device; 4474 struct cam_ed_qinfo *qinfo; 4475 struct cam_devq *devq; 4476 struct cam_periph *periph; 4477 struct cam_sim *ccbsim; 4478 union ccb *work_ccb; 4479 cam_status status; 4480 4481 GIANT_REQUIRED; 4482 4483 status = xpt_compile_path(&bus_path, NULL, pathid, 4484 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 4485 if (status != CAM_REQ_CMP) 4486 return (status); 4487 4488 xpt_async(AC_LOST_DEVICE, &bus_path, NULL); 4489 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL); 4490 4491 /* The SIM may be gone, so use a dummy SIM for any stray operations. */ 4492 devq = bus_path.bus->sim->devq; 4493 bus_path.bus->sim = &cam_dead_sim; 4494 4495 /* Execute any pending operations now. */ 4496 while ((qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->send_queue, 4497 CAMQ_HEAD)) != NULL || 4498 (qinfo = (struct cam_ed_qinfo *)camq_remove(&devq->alloc_queue, 4499 CAMQ_HEAD)) != NULL) { 4500 do { 4501 device = qinfo->device; 4502 work_ccb = cam_ccbq_peek_ccb(&device->ccbq, CAMQ_HEAD); 4503 if (work_ccb != NULL) { 4504 devq->active_dev = device; 4505 cam_ccbq_remove_ccb(&device->ccbq, work_ccb); 4506 cam_ccbq_send_ccb(&device->ccbq, work_ccb); 4507 ccbsim = work_ccb->ccb_h.path->bus->sim; 4508 (*(ccbsim->sim_action))(ccbsim, work_ccb); 4509 } 4510 4511 periph = (struct cam_periph *)camq_remove(&device->drvq, 4512 CAMQ_HEAD); 4513 if (periph != NULL) 4514 xpt_schedule(periph, periph->pinfo.priority); 4515 } while (work_ccb != NULL || periph != NULL); 4516 } 4517 4518 /* Make sure all completed CCBs are processed. */ 4519 while (!TAILQ_EMPTY(&cam_bioq)) { 4520 camisr(&cam_bioq); 4521 4522 /* Repeat the async's for the benefit of any new devices. */ 4523 xpt_async(AC_LOST_DEVICE, &bus_path, NULL); 4524 xpt_async(AC_PATH_DEREGISTERED, &bus_path, NULL); 4525 } 4526 4527 /* Release the reference count held while registered. */ 4528 xpt_release_bus(bus_path.bus); 4529 xpt_release_path(&bus_path); 4530 4531 /* Recheck for more completed CCBs. */ 4532 while (!TAILQ_EMPTY(&cam_bioq)) 4533 camisr(&cam_bioq); 4534 4535 return (CAM_REQ_CMP); 4536 } 4537 4538 static path_id_t 4539 xptnextfreepathid(void) 4540 { 4541 struct cam_eb *bus; 4542 path_id_t pathid; 4543 const char *strval; 4544 4545 pathid = 0; 4546 bus = TAILQ_FIRST(&xpt_busses); 4547 retry: 4548 /* Find an unoccupied pathid */ 4549 while (bus != NULL 4550 && bus->path_id <= pathid) { 4551 if (bus->path_id == pathid) 4552 pathid++; 4553 bus = TAILQ_NEXT(bus, links); 4554 } 4555 4556 /* 4557 * Ensure that this pathid is not reserved for 4558 * a bus that may be registered in the future. 4559 */ 4560 if (resource_string_value("scbus", pathid, "at", &strval) == 0) { 4561 ++pathid; 4562 /* Start the search over */ 4563 goto retry; 4564 } 4565 return (pathid); 4566 } 4567 4568 static path_id_t 4569 xptpathid(const char *sim_name, int sim_unit, int sim_bus) 4570 { 4571 path_id_t pathid; 4572 int i, dunit, val; 4573 char buf[32]; 4574 const char *dname; 4575 4576 pathid = CAM_XPT_PATH_ID; 4577 snprintf(buf, sizeof(buf), "%s%d", sim_name, sim_unit); 4578 i = 0; 4579 while ((resource_find_match(&i, &dname, &dunit, "at", buf)) == 0) { 4580 if (strcmp(dname, "scbus")) { 4581 /* Avoid a bit of foot shooting. */ 4582 continue; 4583 } 4584 if (dunit < 0) /* unwired?! */ 4585 continue; 4586 if (resource_int_value("scbus", dunit, "bus", &val) == 0) { 4587 if (sim_bus == val) { 4588 pathid = dunit; 4589 break; 4590 } 4591 } else if (sim_bus == 0) { 4592 /* Unspecified matches bus 0 */ 4593 pathid = dunit; 4594 break; 4595 } else { 4596 printf("Ambiguous scbus configuration for %s%d " 4597 "bus %d, cannot wire down. The kernel " 4598 "config entry for scbus%d should " 4599 "specify a controller bus.\n" 4600 "Scbus will be assigned dynamically.\n", 4601 sim_name, sim_unit, sim_bus, dunit); 4602 break; 4603 } 4604 } 4605 4606 if (pathid == CAM_XPT_PATH_ID) 4607 pathid = xptnextfreepathid(); 4608 return (pathid); 4609 } 4610 4611 void 4612 xpt_async(u_int32_t async_code, struct cam_path *path, void *async_arg) 4613 { 4614 struct cam_eb *bus; 4615 struct cam_et *target, *next_target; 4616 struct cam_ed *device, *next_device; 4617 int s; 4618 4619 GIANT_REQUIRED; 4620 4621 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("xpt_async\n")); 4622 4623 /* 4624 * Most async events come from a CAM interrupt context. In 4625 * a few cases, the error recovery code at the peripheral layer, 4626 * which may run from our SWI or a process context, may signal 4627 * deferred events with a call to xpt_async. Ensure async 4628 * notifications are serialized by blocking cam interrupts. 4629 */ 4630 s = splcam(); 4631 4632 bus = path->bus; 4633 4634 if (async_code == AC_BUS_RESET) { 4635 int s; 4636 4637 s = splclock(); 4638 /* Update our notion of when the last reset occurred */ 4639 microtime(&bus->last_reset); 4640 splx(s); 4641 } 4642 4643 for (target = TAILQ_FIRST(&bus->et_entries); 4644 target != NULL; 4645 target = next_target) { 4646 4647 next_target = TAILQ_NEXT(target, links); 4648 4649 if (path->target != target 4650 && path->target->target_id != CAM_TARGET_WILDCARD 4651 && target->target_id != CAM_TARGET_WILDCARD) 4652 continue; 4653 4654 if (async_code == AC_SENT_BDR) { 4655 int s; 4656 4657 /* Update our notion of when the last reset occurred */ 4658 s = splclock(); 4659 microtime(&path->target->last_reset); 4660 splx(s); 4661 } 4662 4663 for (device = TAILQ_FIRST(&target->ed_entries); 4664 device != NULL; 4665 device = next_device) { 4666 4667 next_device = TAILQ_NEXT(device, links); 4668 4669 if (path->device != device 4670 && path->device->lun_id != CAM_LUN_WILDCARD 4671 && device->lun_id != CAM_LUN_WILDCARD) 4672 continue; 4673 4674 xpt_dev_async(async_code, bus, target, 4675 device, async_arg); 4676 4677 xpt_async_bcast(&device->asyncs, async_code, 4678 path, async_arg); 4679 } 4680 } 4681 4682 /* 4683 * If this wasn't a fully wildcarded async, tell all 4684 * clients that want all async events. 4685 */ 4686 if (bus != xpt_periph->path->bus) 4687 xpt_async_bcast(&xpt_periph->path->device->asyncs, async_code, 4688 path, async_arg); 4689 splx(s); 4690 } 4691 4692 static void 4693 xpt_async_bcast(struct async_list *async_head, 4694 u_int32_t async_code, 4695 struct cam_path *path, void *async_arg) 4696 { 4697 struct async_node *cur_entry; 4698 4699 cur_entry = SLIST_FIRST(async_head); 4700 while (cur_entry != NULL) { 4701 struct async_node *next_entry; 4702 /* 4703 * Grab the next list entry before we call the current 4704 * entry's callback. This is because the callback function 4705 * can delete its async callback entry. 4706 */ 4707 next_entry = SLIST_NEXT(cur_entry, links); 4708 if ((cur_entry->event_enable & async_code) != 0) 4709 cur_entry->callback(cur_entry->callback_arg, 4710 async_code, path, 4711 async_arg); 4712 cur_entry = next_entry; 4713 } 4714 } 4715 4716 /* 4717 * Handle any per-device event notifications that require action by the XPT. 4718 */ 4719 static void 4720 xpt_dev_async(u_int32_t async_code, struct cam_eb *bus, struct cam_et *target, 4721 struct cam_ed *device, void *async_arg) 4722 { 4723 cam_status status; 4724 struct cam_path newpath; 4725 4726 /* 4727 * We only need to handle events for real devices. 4728 */ 4729 if (target->target_id == CAM_TARGET_WILDCARD 4730 || device->lun_id == CAM_LUN_WILDCARD) 4731 return; 4732 4733 /* 4734 * We need our own path with wildcards expanded to 4735 * handle certain types of events. 4736 */ 4737 if ((async_code == AC_SENT_BDR) 4738 || (async_code == AC_BUS_RESET) 4739 || (async_code == AC_INQ_CHANGED)) 4740 status = xpt_compile_path(&newpath, NULL, 4741 bus->path_id, 4742 target->target_id, 4743 device->lun_id); 4744 else 4745 status = CAM_REQ_CMP_ERR; 4746 4747 if (status == CAM_REQ_CMP) { 4748 4749 /* 4750 * Allow transfer negotiation to occur in a 4751 * tag free environment. 4752 */ 4753 if (async_code == AC_SENT_BDR 4754 || async_code == AC_BUS_RESET) 4755 xpt_toggle_tags(&newpath); 4756 4757 if (async_code == AC_INQ_CHANGED) { 4758 /* 4759 * We've sent a start unit command, or 4760 * something similar to a device that 4761 * may have caused its inquiry data to 4762 * change. So we re-scan the device to 4763 * refresh the inquiry data for it. 4764 */ 4765 xpt_scan_lun(newpath.periph, &newpath, 4766 CAM_EXPECT_INQ_CHANGE, NULL); 4767 } 4768 xpt_release_path(&newpath); 4769 } else if (async_code == AC_LOST_DEVICE) { 4770 device->flags |= CAM_DEV_UNCONFIGURED; 4771 } else if (async_code == AC_TRANSFER_NEG) { 4772 struct ccb_trans_settings *settings; 4773 4774 settings = (struct ccb_trans_settings *)async_arg; 4775 xpt_set_transfer_settings(settings, device, 4776 /*async_update*/TRUE); 4777 } 4778 } 4779 4780 u_int32_t 4781 xpt_freeze_devq(struct cam_path *path, u_int count) 4782 { 4783 int s; 4784 struct ccb_hdr *ccbh; 4785 4786 GIANT_REQUIRED; 4787 4788 s = splcam(); 4789 path->device->qfrozen_cnt += count; 4790 4791 /* 4792 * Mark the last CCB in the queue as needing 4793 * to be requeued if the driver hasn't 4794 * changed it's state yet. This fixes a race 4795 * where a ccb is just about to be queued to 4796 * a controller driver when it's interrupt routine 4797 * freezes the queue. To completly close the 4798 * hole, controller drives must check to see 4799 * if a ccb's status is still CAM_REQ_INPROG 4800 * under spl protection just before they queue 4801 * the CCB. See ahc_action/ahc_freeze_devq for 4802 * an example. 4803 */ 4804 ccbh = TAILQ_LAST(&path->device->ccbq.active_ccbs, ccb_hdr_tailq); 4805 if (ccbh && ccbh->status == CAM_REQ_INPROG) 4806 ccbh->status = CAM_REQUEUE_REQ; 4807 splx(s); 4808 return (path->device->qfrozen_cnt); 4809 } 4810 4811 u_int32_t 4812 xpt_freeze_simq(struct cam_sim *sim, u_int count) 4813 { 4814 GIANT_REQUIRED; 4815 4816 sim->devq->send_queue.qfrozen_cnt += count; 4817 if (sim->devq->active_dev != NULL) { 4818 struct ccb_hdr *ccbh; 4819 4820 ccbh = TAILQ_LAST(&sim->devq->active_dev->ccbq.active_ccbs, 4821 ccb_hdr_tailq); 4822 if (ccbh && ccbh->status == CAM_REQ_INPROG) 4823 ccbh->status = CAM_REQUEUE_REQ; 4824 } 4825 return (sim->devq->send_queue.qfrozen_cnt); 4826 } 4827 4828 static void 4829 xpt_release_devq_timeout(void *arg) 4830 { 4831 struct cam_ed *device; 4832 4833 device = (struct cam_ed *)arg; 4834 4835 xpt_release_devq_device(device, /*count*/1, /*run_queue*/TRUE); 4836 } 4837 4838 void 4839 xpt_release_devq(struct cam_path *path, u_int count, int run_queue) 4840 { 4841 GIANT_REQUIRED; 4842 4843 xpt_release_devq_device(path->device, count, run_queue); 4844 } 4845 4846 static void 4847 xpt_release_devq_device(struct cam_ed *dev, u_int count, int run_queue) 4848 { 4849 int rundevq; 4850 int s0, s1; 4851 4852 rundevq = 0; 4853 s0 = splsoftcam(); 4854 s1 = splcam(); 4855 if (dev->qfrozen_cnt > 0) { 4856 4857 count = (count > dev->qfrozen_cnt) ? dev->qfrozen_cnt : count; 4858 dev->qfrozen_cnt -= count; 4859 if (dev->qfrozen_cnt == 0) { 4860 4861 /* 4862 * No longer need to wait for a successful 4863 * command completion. 4864 */ 4865 dev->flags &= ~CAM_DEV_REL_ON_COMPLETE; 4866 4867 /* 4868 * Remove any timeouts that might be scheduled 4869 * to release this queue. 4870 */ 4871 if ((dev->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) { 4872 untimeout(xpt_release_devq_timeout, dev, 4873 dev->c_handle); 4874 dev->flags &= ~CAM_DEV_REL_TIMEOUT_PENDING; 4875 } 4876 4877 /* 4878 * Now that we are unfrozen schedule the 4879 * device so any pending transactions are 4880 * run. 4881 */ 4882 if ((dev->ccbq.queue.entries > 0) 4883 && (xpt_schedule_dev_sendq(dev->target->bus, dev)) 4884 && (run_queue != 0)) { 4885 rundevq = 1; 4886 } 4887 } 4888 } 4889 splx(s1); 4890 if (rundevq != 0) 4891 xpt_run_dev_sendq(dev->target->bus); 4892 splx(s0); 4893 } 4894 4895 void 4896 xpt_release_simq(struct cam_sim *sim, int run_queue) 4897 { 4898 int s; 4899 struct camq *sendq; 4900 4901 GIANT_REQUIRED; 4902 4903 sendq = &(sim->devq->send_queue); 4904 s = splcam(); 4905 if (sendq->qfrozen_cnt > 0) { 4906 4907 sendq->qfrozen_cnt--; 4908 if (sendq->qfrozen_cnt == 0) { 4909 struct cam_eb *bus; 4910 4911 /* 4912 * If there is a timeout scheduled to release this 4913 * sim queue, remove it. The queue frozen count is 4914 * already at 0. 4915 */ 4916 if ((sim->flags & CAM_SIM_REL_TIMEOUT_PENDING) != 0){ 4917 untimeout(xpt_release_simq_timeout, sim, 4918 sim->c_handle); 4919 sim->flags &= ~CAM_SIM_REL_TIMEOUT_PENDING; 4920 } 4921 bus = xpt_find_bus(sim->path_id); 4922 splx(s); 4923 4924 if (run_queue) { 4925 /* 4926 * Now that we are unfrozen run the send queue. 4927 */ 4928 xpt_run_dev_sendq(bus); 4929 } 4930 xpt_release_bus(bus); 4931 } else 4932 splx(s); 4933 } else 4934 splx(s); 4935 } 4936 4937 static void 4938 xpt_release_simq_timeout(void *arg) 4939 { 4940 struct cam_sim *sim; 4941 4942 sim = (struct cam_sim *)arg; 4943 xpt_release_simq(sim, /* run_queue */ TRUE); 4944 } 4945 4946 void 4947 xpt_done(union ccb *done_ccb) 4948 { 4949 int s; 4950 4951 s = splcam(); 4952 4953 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xpt_done\n")); 4954 if ((done_ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) { 4955 /* 4956 * Queue up the request for handling by our SWI handler 4957 * any of the "non-immediate" type of ccbs. 4958 */ 4959 switch (done_ccb->ccb_h.path->periph->type) { 4960 case CAM_PERIPH_BIO: 4961 mtx_lock(&cam_bioq_lock); 4962 TAILQ_INSERT_TAIL(&cam_bioq, &done_ccb->ccb_h, 4963 sim_links.tqe); 4964 done_ccb->ccb_h.pinfo.index = CAM_DONEQ_INDEX; 4965 mtx_unlock(&cam_bioq_lock); 4966 swi_sched(cambio_ih, 0); 4967 break; 4968 default: 4969 panic("unknown periph type %d", 4970 done_ccb->ccb_h.path->periph->type); 4971 } 4972 } 4973 splx(s); 4974 } 4975 4976 union ccb * 4977 xpt_alloc_ccb() 4978 { 4979 union ccb *new_ccb; 4980 4981 GIANT_REQUIRED; 4982 4983 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_WAITOK); 4984 return (new_ccb); 4985 } 4986 4987 union ccb * 4988 xpt_alloc_ccb_nowait() 4989 { 4990 union ccb *new_ccb; 4991 4992 GIANT_REQUIRED; 4993 4994 new_ccb = malloc(sizeof(*new_ccb), M_CAMXPT, M_NOWAIT); 4995 return (new_ccb); 4996 } 4997 4998 void 4999 xpt_free_ccb(union ccb *free_ccb) 5000 { 5001 free(free_ccb, M_CAMXPT); 5002 } 5003 5004 5005 5006 /* Private XPT functions */ 5007 5008 /* 5009 * Get a CAM control block for the caller. Charge the structure to the device 5010 * referenced by the path. If the this device has no 'credits' then the 5011 * device already has the maximum number of outstanding operations under way 5012 * and we return NULL. If we don't have sufficient resources to allocate more 5013 * ccbs, we also return NULL. 5014 */ 5015 static union ccb * 5016 xpt_get_ccb(struct cam_ed *device) 5017 { 5018 union ccb *new_ccb; 5019 int s; 5020 5021 s = splsoftcam(); 5022 if ((new_ccb = (union ccb *)SLIST_FIRST(&ccb_freeq)) == NULL) { 5023 new_ccb = xpt_alloc_ccb_nowait(); 5024 if (new_ccb == NULL) { 5025 splx(s); 5026 return (NULL); 5027 } 5028 callout_handle_init(&new_ccb->ccb_h.timeout_ch); 5029 SLIST_INSERT_HEAD(&ccb_freeq, &new_ccb->ccb_h, 5030 xpt_links.sle); 5031 xpt_ccb_count++; 5032 } 5033 cam_ccbq_take_opening(&device->ccbq); 5034 SLIST_REMOVE_HEAD(&ccb_freeq, xpt_links.sle); 5035 splx(s); 5036 return (new_ccb); 5037 } 5038 5039 static void 5040 xpt_release_bus(struct cam_eb *bus) 5041 { 5042 int s; 5043 5044 s = splcam(); 5045 if ((--bus->refcount == 0) 5046 && (TAILQ_FIRST(&bus->et_entries) == NULL)) { 5047 TAILQ_REMOVE(&xpt_busses, bus, links); 5048 bus_generation++; 5049 splx(s); 5050 free(bus, M_CAMXPT); 5051 } else 5052 splx(s); 5053 } 5054 5055 static struct cam_et * 5056 xpt_alloc_target(struct cam_eb *bus, target_id_t target_id) 5057 { 5058 struct cam_et *target; 5059 5060 target = (struct cam_et *)malloc(sizeof(*target), M_CAMXPT, M_NOWAIT); 5061 if (target != NULL) { 5062 struct cam_et *cur_target; 5063 5064 TAILQ_INIT(&target->ed_entries); 5065 target->bus = bus; 5066 target->target_id = target_id; 5067 target->refcount = 1; 5068 target->generation = 0; 5069 timevalclear(&target->last_reset); 5070 /* 5071 * Hold a reference to our parent bus so it 5072 * will not go away before we do. 5073 */ 5074 bus->refcount++; 5075 5076 /* Insertion sort into our bus's target list */ 5077 cur_target = TAILQ_FIRST(&bus->et_entries); 5078 while (cur_target != NULL && cur_target->target_id < target_id) 5079 cur_target = TAILQ_NEXT(cur_target, links); 5080 5081 if (cur_target != NULL) { 5082 TAILQ_INSERT_BEFORE(cur_target, target, links); 5083 } else { 5084 TAILQ_INSERT_TAIL(&bus->et_entries, target, links); 5085 } 5086 bus->generation++; 5087 } 5088 return (target); 5089 } 5090 5091 static void 5092 xpt_release_target(struct cam_eb *bus, struct cam_et *target) 5093 { 5094 int s; 5095 5096 s = splcam(); 5097 if ((--target->refcount == 0) 5098 && (TAILQ_FIRST(&target->ed_entries) == NULL)) { 5099 TAILQ_REMOVE(&bus->et_entries, target, links); 5100 bus->generation++; 5101 splx(s); 5102 free(target, M_CAMXPT); 5103 xpt_release_bus(bus); 5104 } else 5105 splx(s); 5106 } 5107 5108 static struct cam_ed * 5109 xpt_alloc_device(struct cam_eb *bus, struct cam_et *target, lun_id_t lun_id) 5110 { 5111 #ifdef CAM_NEW_TRAN_CODE 5112 struct cam_path path; 5113 #endif /* CAM_NEW_TRAN_CODE */ 5114 struct cam_ed *device; 5115 struct cam_devq *devq; 5116 cam_status status; 5117 5118 if (SIM_DEAD(bus->sim)) 5119 return (NULL); 5120 5121 /* Make space for us in the device queue on our bus */ 5122 devq = bus->sim->devq; 5123 status = cam_devq_resize(devq, devq->alloc_queue.array_size + 1); 5124 5125 if (status != CAM_REQ_CMP) { 5126 device = NULL; 5127 } else { 5128 device = (struct cam_ed *)malloc(sizeof(*device), 5129 M_CAMXPT, M_NOWAIT); 5130 } 5131 5132 if (device != NULL) { 5133 struct cam_ed *cur_device; 5134 5135 cam_init_pinfo(&device->alloc_ccb_entry.pinfo); 5136 device->alloc_ccb_entry.device = device; 5137 cam_init_pinfo(&device->send_ccb_entry.pinfo); 5138 device->send_ccb_entry.device = device; 5139 device->target = target; 5140 device->lun_id = lun_id; 5141 /* Initialize our queues */ 5142 if (camq_init(&device->drvq, 0) != 0) { 5143 free(device, M_CAMXPT); 5144 return (NULL); 5145 } 5146 if (cam_ccbq_init(&device->ccbq, 5147 bus->sim->max_dev_openings) != 0) { 5148 camq_fini(&device->drvq); 5149 free(device, M_CAMXPT); 5150 return (NULL); 5151 } 5152 SLIST_INIT(&device->asyncs); 5153 SLIST_INIT(&device->periphs); 5154 device->generation = 0; 5155 device->owner = NULL; 5156 /* 5157 * Take the default quirk entry until we have inquiry 5158 * data and can determine a better quirk to use. 5159 */ 5160 device->quirk = &xpt_quirk_table[xpt_quirk_table_size - 1]; 5161 bzero(&device->inq_data, sizeof(device->inq_data)); 5162 device->inq_flags = 0; 5163 device->queue_flags = 0; 5164 device->serial_num = NULL; 5165 device->serial_num_len = 0; 5166 device->qfrozen_cnt = 0; 5167 device->flags = CAM_DEV_UNCONFIGURED; 5168 device->tag_delay_count = 0; 5169 device->tag_saved_openings = 0; 5170 device->refcount = 1; 5171 callout_handle_init(&device->c_handle); 5172 5173 /* 5174 * Hold a reference to our parent target so it 5175 * will not go away before we do. 5176 */ 5177 target->refcount++; 5178 5179 /* 5180 * XXX should be limited by number of CCBs this bus can 5181 * do. 5182 */ 5183 xpt_max_ccbs += device->ccbq.devq_openings; 5184 /* Insertion sort into our target's device list */ 5185 cur_device = TAILQ_FIRST(&target->ed_entries); 5186 while (cur_device != NULL && cur_device->lun_id < lun_id) 5187 cur_device = TAILQ_NEXT(cur_device, links); 5188 if (cur_device != NULL) { 5189 TAILQ_INSERT_BEFORE(cur_device, device, links); 5190 } else { 5191 TAILQ_INSERT_TAIL(&target->ed_entries, device, links); 5192 } 5193 target->generation++; 5194 #ifdef CAM_NEW_TRAN_CODE 5195 if (lun_id != CAM_LUN_WILDCARD) { 5196 xpt_compile_path(&path, 5197 NULL, 5198 bus->path_id, 5199 target->target_id, 5200 lun_id); 5201 xpt_devise_transport(&path); 5202 xpt_release_path(&path); 5203 } 5204 #endif /* CAM_NEW_TRAN_CODE */ 5205 } 5206 return (device); 5207 } 5208 5209 static void 5210 xpt_release_device(struct cam_eb *bus, struct cam_et *target, 5211 struct cam_ed *device) 5212 { 5213 int s; 5214 5215 s = splcam(); 5216 if ((--device->refcount == 0) 5217 && ((device->flags & CAM_DEV_UNCONFIGURED) != 0)) { 5218 struct cam_devq *devq; 5219 5220 if (device->alloc_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX 5221 || device->send_ccb_entry.pinfo.index != CAM_UNQUEUED_INDEX) 5222 panic("Removing device while still queued for ccbs"); 5223 5224 if ((device->flags & CAM_DEV_REL_TIMEOUT_PENDING) != 0) 5225 untimeout(xpt_release_devq_timeout, device, 5226 device->c_handle); 5227 5228 TAILQ_REMOVE(&target->ed_entries, device,links); 5229 target->generation++; 5230 xpt_max_ccbs -= device->ccbq.devq_openings; 5231 if (!SIM_DEAD(bus->sim)) { 5232 /* Release our slot in the devq */ 5233 devq = bus->sim->devq; 5234 cam_devq_resize(devq, devq->alloc_queue.array_size - 1); 5235 } 5236 splx(s); 5237 camq_fini(&device->drvq); 5238 camq_fini(&device->ccbq.queue); 5239 free(device, M_CAMXPT); 5240 xpt_release_target(bus, target); 5241 } else 5242 splx(s); 5243 } 5244 5245 static u_int32_t 5246 xpt_dev_ccbq_resize(struct cam_path *path, int newopenings) 5247 { 5248 int s; 5249 int diff; 5250 int result; 5251 struct cam_ed *dev; 5252 5253 dev = path->device; 5254 s = splsoftcam(); 5255 5256 diff = newopenings - (dev->ccbq.dev_active + dev->ccbq.dev_openings); 5257 result = cam_ccbq_resize(&dev->ccbq, newopenings); 5258 if (result == CAM_REQ_CMP && (diff < 0)) { 5259 dev->flags |= CAM_DEV_RESIZE_QUEUE_NEEDED; 5260 } 5261 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 5262 || (dev->inq_flags & SID_CmdQue) != 0) 5263 dev->tag_saved_openings = newopenings; 5264 /* Adjust the global limit */ 5265 xpt_max_ccbs += diff; 5266 splx(s); 5267 return (result); 5268 } 5269 5270 static struct cam_eb * 5271 xpt_find_bus(path_id_t path_id) 5272 { 5273 struct cam_eb *bus; 5274 5275 for (bus = TAILQ_FIRST(&xpt_busses); 5276 bus != NULL; 5277 bus = TAILQ_NEXT(bus, links)) { 5278 if (bus->path_id == path_id) { 5279 bus->refcount++; 5280 break; 5281 } 5282 } 5283 return (bus); 5284 } 5285 5286 static struct cam_et * 5287 xpt_find_target(struct cam_eb *bus, target_id_t target_id) 5288 { 5289 struct cam_et *target; 5290 5291 for (target = TAILQ_FIRST(&bus->et_entries); 5292 target != NULL; 5293 target = TAILQ_NEXT(target, links)) { 5294 if (target->target_id == target_id) { 5295 target->refcount++; 5296 break; 5297 } 5298 } 5299 return (target); 5300 } 5301 5302 static struct cam_ed * 5303 xpt_find_device(struct cam_et *target, lun_id_t lun_id) 5304 { 5305 struct cam_ed *device; 5306 5307 for (device = TAILQ_FIRST(&target->ed_entries); 5308 device != NULL; 5309 device = TAILQ_NEXT(device, links)) { 5310 if (device->lun_id == lun_id) { 5311 device->refcount++; 5312 break; 5313 } 5314 } 5315 return (device); 5316 } 5317 5318 typedef struct { 5319 union ccb *request_ccb; 5320 struct ccb_pathinq *cpi; 5321 int counter; 5322 } xpt_scan_bus_info; 5323 5324 /* 5325 * To start a scan, request_ccb is an XPT_SCAN_BUS ccb. 5326 * As the scan progresses, xpt_scan_bus is used as the 5327 * callback on completion function. 5328 */ 5329 static void 5330 xpt_scan_bus(struct cam_periph *periph, union ccb *request_ccb) 5331 { 5332 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE, 5333 ("xpt_scan_bus\n")); 5334 switch (request_ccb->ccb_h.func_code) { 5335 case XPT_SCAN_BUS: 5336 { 5337 xpt_scan_bus_info *scan_info; 5338 union ccb *work_ccb; 5339 struct cam_path *path; 5340 u_int i; 5341 u_int max_target; 5342 u_int initiator_id; 5343 5344 /* Find out the characteristics of the bus */ 5345 work_ccb = xpt_alloc_ccb(); 5346 xpt_setup_ccb(&work_ccb->ccb_h, request_ccb->ccb_h.path, 5347 request_ccb->ccb_h.pinfo.priority); 5348 work_ccb->ccb_h.func_code = XPT_PATH_INQ; 5349 xpt_action(work_ccb); 5350 if (work_ccb->ccb_h.status != CAM_REQ_CMP) { 5351 request_ccb->ccb_h.status = work_ccb->ccb_h.status; 5352 xpt_free_ccb(work_ccb); 5353 xpt_done(request_ccb); 5354 return; 5355 } 5356 5357 if ((work_ccb->cpi.hba_misc & PIM_NOINITIATOR) != 0) { 5358 /* 5359 * Can't scan the bus on an adapter that 5360 * cannot perform the initiator role. 5361 */ 5362 request_ccb->ccb_h.status = CAM_REQ_CMP; 5363 xpt_free_ccb(work_ccb); 5364 xpt_done(request_ccb); 5365 return; 5366 } 5367 5368 /* Save some state for use while we probe for devices */ 5369 scan_info = (xpt_scan_bus_info *) 5370 malloc(sizeof(xpt_scan_bus_info), M_TEMP, M_WAITOK); 5371 scan_info->request_ccb = request_ccb; 5372 scan_info->cpi = &work_ccb->cpi; 5373 5374 /* Cache on our stack so we can work asynchronously */ 5375 max_target = scan_info->cpi->max_target; 5376 initiator_id = scan_info->cpi->initiator_id; 5377 5378 5379 /* 5380 * We can scan all targets in parallel, or do it sequentially. 5381 */ 5382 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 5383 max_target = 0; 5384 scan_info->counter = 0; 5385 } else { 5386 scan_info->counter = scan_info->cpi->max_target + 1; 5387 if (scan_info->cpi->initiator_id < scan_info->counter) { 5388 scan_info->counter--; 5389 } 5390 } 5391 5392 for (i = 0; i <= max_target; i++) { 5393 cam_status status; 5394 if (i == initiator_id) 5395 continue; 5396 5397 status = xpt_create_path(&path, xpt_periph, 5398 request_ccb->ccb_h.path_id, 5399 i, 0); 5400 if (status != CAM_REQ_CMP) { 5401 printf("xpt_scan_bus: xpt_create_path failed" 5402 " with status %#x, bus scan halted\n", 5403 status); 5404 free(scan_info, M_TEMP); 5405 request_ccb->ccb_h.status = status; 5406 xpt_free_ccb(work_ccb); 5407 xpt_done(request_ccb); 5408 break; 5409 } 5410 work_ccb = xpt_alloc_ccb(); 5411 xpt_setup_ccb(&work_ccb->ccb_h, path, 5412 request_ccb->ccb_h.pinfo.priority); 5413 work_ccb->ccb_h.func_code = XPT_SCAN_LUN; 5414 work_ccb->ccb_h.cbfcnp = xpt_scan_bus; 5415 work_ccb->ccb_h.ppriv_ptr0 = scan_info; 5416 work_ccb->crcn.flags = request_ccb->crcn.flags; 5417 xpt_action(work_ccb); 5418 } 5419 break; 5420 } 5421 case XPT_SCAN_LUN: 5422 { 5423 cam_status status; 5424 struct cam_path *path; 5425 xpt_scan_bus_info *scan_info; 5426 path_id_t path_id; 5427 target_id_t target_id; 5428 lun_id_t lun_id; 5429 5430 /* Reuse the same CCB to query if a device was really found */ 5431 scan_info = (xpt_scan_bus_info *)request_ccb->ccb_h.ppriv_ptr0; 5432 xpt_setup_ccb(&request_ccb->ccb_h, request_ccb->ccb_h.path, 5433 request_ccb->ccb_h.pinfo.priority); 5434 request_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 5435 5436 path_id = request_ccb->ccb_h.path_id; 5437 target_id = request_ccb->ccb_h.target_id; 5438 lun_id = request_ccb->ccb_h.target_lun; 5439 xpt_action(request_ccb); 5440 5441 if (request_ccb->ccb_h.status != CAM_REQ_CMP) { 5442 struct cam_ed *device; 5443 struct cam_et *target; 5444 int s, phl; 5445 5446 /* 5447 * If we already probed lun 0 successfully, or 5448 * we have additional configured luns on this 5449 * target that might have "gone away", go onto 5450 * the next lun. 5451 */ 5452 target = request_ccb->ccb_h.path->target; 5453 /* 5454 * We may touch devices that we don't 5455 * hold references too, so ensure they 5456 * don't disappear out from under us. 5457 * The target above is referenced by the 5458 * path in the request ccb. 5459 */ 5460 phl = 0; 5461 s = splcam(); 5462 device = TAILQ_FIRST(&target->ed_entries); 5463 if (device != NULL) { 5464 phl = CAN_SRCH_HI_SPARSE(device); 5465 if (device->lun_id == 0) 5466 device = TAILQ_NEXT(device, links); 5467 } 5468 splx(s); 5469 if ((lun_id != 0) || (device != NULL)) { 5470 if (lun_id < (CAM_SCSI2_MAXLUN-1) || phl) 5471 lun_id++; 5472 } 5473 } else { 5474 struct cam_ed *device; 5475 5476 device = request_ccb->ccb_h.path->device; 5477 5478 if ((device->quirk->quirks & CAM_QUIRK_NOLUNS) == 0) { 5479 /* Try the next lun */ 5480 if (lun_id < (CAM_SCSI2_MAXLUN-1) 5481 || CAN_SRCH_HI_DENSE(device)) 5482 lun_id++; 5483 } 5484 } 5485 5486 /* 5487 * Free the current request path- we're done with it. 5488 */ 5489 xpt_free_path(request_ccb->ccb_h.path); 5490 5491 /* 5492 * Check to see if we scan any further luns. 5493 */ 5494 if (lun_id == request_ccb->ccb_h.target_lun 5495 || lun_id > scan_info->cpi->max_lun) { 5496 int done; 5497 5498 hop_again: 5499 done = 0; 5500 if (scan_info->cpi->hba_misc & PIM_SEQSCAN) { 5501 scan_info->counter++; 5502 if (scan_info->counter == 5503 scan_info->cpi->initiator_id) { 5504 scan_info->counter++; 5505 } 5506 if (scan_info->counter >= 5507 scan_info->cpi->max_target+1) { 5508 done = 1; 5509 } 5510 } else { 5511 scan_info->counter--; 5512 if (scan_info->counter == 0) { 5513 done = 1; 5514 } 5515 } 5516 if (done) { 5517 xpt_free_ccb(request_ccb); 5518 xpt_free_ccb((union ccb *)scan_info->cpi); 5519 request_ccb = scan_info->request_ccb; 5520 free(scan_info, M_TEMP); 5521 request_ccb->ccb_h.status = CAM_REQ_CMP; 5522 xpt_done(request_ccb); 5523 break; 5524 } 5525 5526 if ((scan_info->cpi->hba_misc & PIM_SEQSCAN) == 0) { 5527 break; 5528 } 5529 status = xpt_create_path(&path, xpt_periph, 5530 scan_info->request_ccb->ccb_h.path_id, 5531 scan_info->counter, 0); 5532 if (status != CAM_REQ_CMP) { 5533 printf("xpt_scan_bus: xpt_create_path failed" 5534 " with status %#x, bus scan halted\n", 5535 status); 5536 xpt_free_ccb(request_ccb); 5537 xpt_free_ccb((union ccb *)scan_info->cpi); 5538 request_ccb = scan_info->request_ccb; 5539 free(scan_info, M_TEMP); 5540 request_ccb->ccb_h.status = status; 5541 xpt_done(request_ccb); 5542 break; 5543 } 5544 xpt_setup_ccb(&request_ccb->ccb_h, path, 5545 request_ccb->ccb_h.pinfo.priority); 5546 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 5547 request_ccb->ccb_h.cbfcnp = xpt_scan_bus; 5548 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 5549 request_ccb->crcn.flags = 5550 scan_info->request_ccb->crcn.flags; 5551 } else { 5552 status = xpt_create_path(&path, xpt_periph, 5553 path_id, target_id, lun_id); 5554 if (status != CAM_REQ_CMP) { 5555 printf("xpt_scan_bus: xpt_create_path failed " 5556 "with status %#x, halting LUN scan\n", 5557 status); 5558 goto hop_again; 5559 } 5560 xpt_setup_ccb(&request_ccb->ccb_h, path, 5561 request_ccb->ccb_h.pinfo.priority); 5562 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 5563 request_ccb->ccb_h.cbfcnp = xpt_scan_bus; 5564 request_ccb->ccb_h.ppriv_ptr0 = scan_info; 5565 request_ccb->crcn.flags = 5566 scan_info->request_ccb->crcn.flags; 5567 } 5568 xpt_action(request_ccb); 5569 break; 5570 } 5571 default: 5572 break; 5573 } 5574 } 5575 5576 typedef enum { 5577 PROBE_TUR, 5578 PROBE_INQUIRY, 5579 PROBE_FULL_INQUIRY, 5580 PROBE_MODE_SENSE, 5581 PROBE_SERIAL_NUM, 5582 PROBE_TUR_FOR_NEGOTIATION 5583 } probe_action; 5584 5585 typedef enum { 5586 PROBE_INQUIRY_CKSUM = 0x01, 5587 PROBE_SERIAL_CKSUM = 0x02, 5588 PROBE_NO_ANNOUNCE = 0x04 5589 } probe_flags; 5590 5591 typedef struct { 5592 TAILQ_HEAD(, ccb_hdr) request_ccbs; 5593 probe_action action; 5594 union ccb saved_ccb; 5595 probe_flags flags; 5596 MD5_CTX context; 5597 u_int8_t digest[16]; 5598 } probe_softc; 5599 5600 static void 5601 xpt_scan_lun(struct cam_periph *periph, struct cam_path *path, 5602 cam_flags flags, union ccb *request_ccb) 5603 { 5604 struct ccb_pathinq cpi; 5605 cam_status status; 5606 struct cam_path *new_path; 5607 struct cam_periph *old_periph; 5608 int s; 5609 5610 CAM_DEBUG(request_ccb->ccb_h.path, CAM_DEBUG_TRACE, 5611 ("xpt_scan_lun\n")); 5612 5613 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1); 5614 cpi.ccb_h.func_code = XPT_PATH_INQ; 5615 xpt_action((union ccb *)&cpi); 5616 5617 if (cpi.ccb_h.status != CAM_REQ_CMP) { 5618 if (request_ccb != NULL) { 5619 request_ccb->ccb_h.status = cpi.ccb_h.status; 5620 xpt_done(request_ccb); 5621 } 5622 return; 5623 } 5624 5625 if ((cpi.hba_misc & PIM_NOINITIATOR) != 0) { 5626 /* 5627 * Can't scan the bus on an adapter that 5628 * cannot perform the initiator role. 5629 */ 5630 if (request_ccb != NULL) { 5631 request_ccb->ccb_h.status = CAM_REQ_CMP; 5632 xpt_done(request_ccb); 5633 } 5634 return; 5635 } 5636 5637 if (request_ccb == NULL) { 5638 request_ccb = malloc(sizeof(union ccb), M_TEMP, M_NOWAIT); 5639 if (request_ccb == NULL) { 5640 xpt_print_path(path); 5641 printf("xpt_scan_lun: can't allocate CCB, can't " 5642 "continue\n"); 5643 return; 5644 } 5645 new_path = malloc(sizeof(*new_path), M_TEMP, M_NOWAIT); 5646 if (new_path == NULL) { 5647 xpt_print_path(path); 5648 printf("xpt_scan_lun: can't allocate path, can't " 5649 "continue\n"); 5650 free(request_ccb, M_TEMP); 5651 return; 5652 } 5653 status = xpt_compile_path(new_path, xpt_periph, 5654 path->bus->path_id, 5655 path->target->target_id, 5656 path->device->lun_id); 5657 5658 if (status != CAM_REQ_CMP) { 5659 xpt_print_path(path); 5660 printf("xpt_scan_lun: can't compile path, can't " 5661 "continue\n"); 5662 free(request_ccb, M_TEMP); 5663 free(new_path, M_TEMP); 5664 return; 5665 } 5666 xpt_setup_ccb(&request_ccb->ccb_h, new_path, /*priority*/ 1); 5667 request_ccb->ccb_h.cbfcnp = xptscandone; 5668 request_ccb->ccb_h.func_code = XPT_SCAN_LUN; 5669 request_ccb->crcn.flags = flags; 5670 } 5671 5672 s = splsoftcam(); 5673 if ((old_periph = cam_periph_find(path, "probe")) != NULL) { 5674 probe_softc *softc; 5675 5676 softc = (probe_softc *)old_periph->softc; 5677 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, 5678 periph_links.tqe); 5679 } else { 5680 status = cam_periph_alloc(proberegister, NULL, probecleanup, 5681 probestart, "probe", 5682 CAM_PERIPH_BIO, 5683 request_ccb->ccb_h.path, NULL, 0, 5684 request_ccb); 5685 5686 if (status != CAM_REQ_CMP) { 5687 xpt_print_path(path); 5688 printf("xpt_scan_lun: cam_alloc_periph returned an " 5689 "error, can't continue probe\n"); 5690 request_ccb->ccb_h.status = status; 5691 xpt_done(request_ccb); 5692 } 5693 } 5694 splx(s); 5695 } 5696 5697 static void 5698 xptscandone(struct cam_periph *periph, union ccb *done_ccb) 5699 { 5700 xpt_release_path(done_ccb->ccb_h.path); 5701 free(done_ccb->ccb_h.path, M_TEMP); 5702 free(done_ccb, M_TEMP); 5703 } 5704 5705 static cam_status 5706 proberegister(struct cam_periph *periph, void *arg) 5707 { 5708 union ccb *request_ccb; /* CCB representing the probe request */ 5709 probe_softc *softc; 5710 5711 request_ccb = (union ccb *)arg; 5712 if (periph == NULL) { 5713 printf("proberegister: periph was NULL!!\n"); 5714 return(CAM_REQ_CMP_ERR); 5715 } 5716 5717 if (request_ccb == NULL) { 5718 printf("proberegister: no probe CCB, " 5719 "can't register device\n"); 5720 return(CAM_REQ_CMP_ERR); 5721 } 5722 5723 softc = (probe_softc *)malloc(sizeof(*softc), M_TEMP, M_NOWAIT); 5724 5725 if (softc == NULL) { 5726 printf("proberegister: Unable to probe new device. " 5727 "Unable to allocate softc\n"); 5728 return(CAM_REQ_CMP_ERR); 5729 } 5730 TAILQ_INIT(&softc->request_ccbs); 5731 TAILQ_INSERT_TAIL(&softc->request_ccbs, &request_ccb->ccb_h, 5732 periph_links.tqe); 5733 softc->flags = 0; 5734 periph->softc = softc; 5735 cam_periph_acquire(periph); 5736 /* 5737 * Ensure we've waited at least a bus settle 5738 * delay before attempting to probe the device. 5739 * For HBAs that don't do bus resets, this won't make a difference. 5740 */ 5741 cam_periph_freeze_after_event(periph, &periph->path->bus->last_reset, 5742 scsi_delay); 5743 probeschedule(periph); 5744 return(CAM_REQ_CMP); 5745 } 5746 5747 static void 5748 probeschedule(struct cam_periph *periph) 5749 { 5750 struct ccb_pathinq cpi; 5751 union ccb *ccb; 5752 probe_softc *softc; 5753 5754 softc = (probe_softc *)periph->softc; 5755 ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 5756 5757 xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1); 5758 cpi.ccb_h.func_code = XPT_PATH_INQ; 5759 xpt_action((union ccb *)&cpi); 5760 5761 /* 5762 * If a device has gone away and another device, or the same one, 5763 * is back in the same place, it should have a unit attention 5764 * condition pending. It will not report the unit attention in 5765 * response to an inquiry, which may leave invalid transfer 5766 * negotiations in effect. The TUR will reveal the unit attention 5767 * condition. Only send the TUR for lun 0, since some devices 5768 * will get confused by commands other than inquiry to non-existent 5769 * luns. If you think a device has gone away start your scan from 5770 * lun 0. This will insure that any bogus transfer settings are 5771 * invalidated. 5772 * 5773 * If we haven't seen the device before and the controller supports 5774 * some kind of transfer negotiation, negotiate with the first 5775 * sent command if no bus reset was performed at startup. This 5776 * ensures that the device is not confused by transfer negotiation 5777 * settings left over by loader or BIOS action. 5778 */ 5779 if (((ccb->ccb_h.path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 5780 && (ccb->ccb_h.target_lun == 0)) { 5781 softc->action = PROBE_TUR; 5782 } else if ((cpi.hba_inquiry & (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE)) != 0 5783 && (cpi.hba_misc & PIM_NOBUSRESET) != 0) { 5784 proberequestdefaultnegotiation(periph); 5785 softc->action = PROBE_INQUIRY; 5786 } else { 5787 softc->action = PROBE_INQUIRY; 5788 } 5789 5790 if (ccb->crcn.flags & CAM_EXPECT_INQ_CHANGE) 5791 softc->flags |= PROBE_NO_ANNOUNCE; 5792 else 5793 softc->flags &= ~PROBE_NO_ANNOUNCE; 5794 5795 xpt_schedule(periph, ccb->ccb_h.pinfo.priority); 5796 } 5797 5798 static void 5799 probestart(struct cam_periph *periph, union ccb *start_ccb) 5800 { 5801 /* Probe the device that our peripheral driver points to */ 5802 struct ccb_scsiio *csio; 5803 probe_softc *softc; 5804 5805 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probestart\n")); 5806 5807 softc = (probe_softc *)periph->softc; 5808 csio = &start_ccb->csio; 5809 5810 switch (softc->action) { 5811 case PROBE_TUR: 5812 case PROBE_TUR_FOR_NEGOTIATION: 5813 { 5814 scsi_test_unit_ready(csio, 5815 /*retries*/4, 5816 probedone, 5817 MSG_SIMPLE_Q_TAG, 5818 SSD_FULL_SIZE, 5819 /*timeout*/60000); 5820 break; 5821 } 5822 case PROBE_INQUIRY: 5823 case PROBE_FULL_INQUIRY: 5824 { 5825 u_int inquiry_len; 5826 struct scsi_inquiry_data *inq_buf; 5827 5828 inq_buf = &periph->path->device->inq_data; 5829 /* 5830 * If the device is currently configured, we calculate an 5831 * MD5 checksum of the inquiry data, and if the serial number 5832 * length is greater than 0, add the serial number data 5833 * into the checksum as well. Once the inquiry and the 5834 * serial number check finish, we attempt to figure out 5835 * whether we still have the same device. 5836 */ 5837 if ((periph->path->device->flags & CAM_DEV_UNCONFIGURED) == 0) { 5838 5839 MD5Init(&softc->context); 5840 MD5Update(&softc->context, (unsigned char *)inq_buf, 5841 sizeof(struct scsi_inquiry_data)); 5842 softc->flags |= PROBE_INQUIRY_CKSUM; 5843 if (periph->path->device->serial_num_len > 0) { 5844 MD5Update(&softc->context, 5845 periph->path->device->serial_num, 5846 periph->path->device->serial_num_len); 5847 softc->flags |= PROBE_SERIAL_CKSUM; 5848 } 5849 MD5Final(softc->digest, &softc->context); 5850 } 5851 5852 if (softc->action == PROBE_INQUIRY) 5853 inquiry_len = SHORT_INQUIRY_LENGTH; 5854 else 5855 inquiry_len = inq_buf->additional_length 5856 + offsetof(struct scsi_inquiry_data, 5857 additional_length) + 1; 5858 5859 /* 5860 * Some parallel SCSI devices fail to send an 5861 * ignore wide residue message when dealing with 5862 * odd length inquiry requests. Round up to be 5863 * safe. 5864 */ 5865 inquiry_len = roundup2(inquiry_len, 2); 5866 5867 scsi_inquiry(csio, 5868 /*retries*/4, 5869 probedone, 5870 MSG_SIMPLE_Q_TAG, 5871 (u_int8_t *)inq_buf, 5872 inquiry_len, 5873 /*evpd*/FALSE, 5874 /*page_code*/0, 5875 SSD_MIN_SIZE, 5876 /*timeout*/60 * 1000); 5877 break; 5878 } 5879 case PROBE_MODE_SENSE: 5880 { 5881 void *mode_buf; 5882 int mode_buf_len; 5883 5884 mode_buf_len = sizeof(struct scsi_mode_header_6) 5885 + sizeof(struct scsi_mode_blk_desc) 5886 + sizeof(struct scsi_control_page); 5887 mode_buf = malloc(mode_buf_len, M_TEMP, M_NOWAIT); 5888 if (mode_buf != NULL) { 5889 scsi_mode_sense(csio, 5890 /*retries*/4, 5891 probedone, 5892 MSG_SIMPLE_Q_TAG, 5893 /*dbd*/FALSE, 5894 SMS_PAGE_CTRL_CURRENT, 5895 SMS_CONTROL_MODE_PAGE, 5896 mode_buf, 5897 mode_buf_len, 5898 SSD_FULL_SIZE, 5899 /*timeout*/60000); 5900 break; 5901 } 5902 xpt_print_path(periph->path); 5903 printf("Unable to mode sense control page - malloc failure\n"); 5904 softc->action = PROBE_SERIAL_NUM; 5905 } 5906 /* FALLTHROUGH */ 5907 case PROBE_SERIAL_NUM: 5908 { 5909 struct scsi_vpd_unit_serial_number *serial_buf; 5910 struct cam_ed* device; 5911 5912 serial_buf = NULL; 5913 device = periph->path->device; 5914 device->serial_num = NULL; 5915 device->serial_num_len = 0; 5916 5917 if ((device->quirk->quirks & CAM_QUIRK_NOSERIAL) == 0) 5918 serial_buf = (struct scsi_vpd_unit_serial_number *) 5919 malloc(sizeof(*serial_buf), M_TEMP, 5920 M_NOWAIT | M_ZERO); 5921 5922 if (serial_buf != NULL) { 5923 scsi_inquiry(csio, 5924 /*retries*/4, 5925 probedone, 5926 MSG_SIMPLE_Q_TAG, 5927 (u_int8_t *)serial_buf, 5928 sizeof(*serial_buf), 5929 /*evpd*/TRUE, 5930 SVPD_UNIT_SERIAL_NUMBER, 5931 SSD_MIN_SIZE, 5932 /*timeout*/60 * 1000); 5933 break; 5934 } 5935 /* 5936 * We'll have to do without, let our probedone 5937 * routine finish up for us. 5938 */ 5939 start_ccb->csio.data_ptr = NULL; 5940 probedone(periph, start_ccb); 5941 return; 5942 } 5943 } 5944 xpt_action(start_ccb); 5945 } 5946 5947 static void 5948 proberequestdefaultnegotiation(struct cam_periph *periph) 5949 { 5950 struct ccb_trans_settings cts; 5951 5952 xpt_setup_ccb(&cts.ccb_h, periph->path, /*priority*/1); 5953 cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 5954 #ifdef CAM_NEW_TRAN_CODE 5955 cts.type = CTS_TYPE_USER_SETTINGS; 5956 #else /* CAM_NEW_TRAN_CODE */ 5957 cts.flags = CCB_TRANS_USER_SETTINGS; 5958 #endif /* CAM_NEW_TRAN_CODE */ 5959 xpt_action((union ccb *)&cts); 5960 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 5961 #ifdef CAM_NEW_TRAN_CODE 5962 cts.type = CTS_TYPE_CURRENT_SETTINGS; 5963 #else /* CAM_NEW_TRAN_CODE */ 5964 cts.flags &= ~CCB_TRANS_USER_SETTINGS; 5965 cts.flags |= CCB_TRANS_CURRENT_SETTINGS; 5966 #endif /* CAM_NEW_TRAN_CODE */ 5967 xpt_action((union ccb *)&cts); 5968 } 5969 5970 static void 5971 probedone(struct cam_periph *periph, union ccb *done_ccb) 5972 { 5973 probe_softc *softc; 5974 struct cam_path *path; 5975 u_int32_t priority; 5976 5977 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("probedone\n")); 5978 5979 softc = (probe_softc *)periph->softc; 5980 path = done_ccb->ccb_h.path; 5981 priority = done_ccb->ccb_h.pinfo.priority; 5982 5983 switch (softc->action) { 5984 case PROBE_TUR: 5985 { 5986 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 5987 5988 if (cam_periph_error(done_ccb, 0, 5989 SF_NO_PRINT, NULL) == ERESTART) 5990 return; 5991 else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 5992 /* Don't wedge the queue */ 5993 xpt_release_devq(done_ccb->ccb_h.path, 5994 /*count*/1, 5995 /*run_queue*/TRUE); 5996 } 5997 softc->action = PROBE_INQUIRY; 5998 xpt_release_ccb(done_ccb); 5999 xpt_schedule(periph, priority); 6000 return; 6001 } 6002 case PROBE_INQUIRY: 6003 case PROBE_FULL_INQUIRY: 6004 { 6005 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 6006 struct scsi_inquiry_data *inq_buf; 6007 u_int8_t periph_qual; 6008 6009 path->device->flags |= CAM_DEV_INQUIRY_DATA_VALID; 6010 inq_buf = &path->device->inq_data; 6011 6012 periph_qual = SID_QUAL(inq_buf); 6013 6014 switch(periph_qual) { 6015 case SID_QUAL_LU_CONNECTED: 6016 { 6017 u_int8_t len; 6018 6019 /* 6020 * We conservatively request only 6021 * SHORT_INQUIRY_LEN bytes of inquiry 6022 * information during our first try 6023 * at sending an INQUIRY. If the device 6024 * has more information to give, 6025 * perform a second request specifying 6026 * the amount of information the device 6027 * is willing to give. 6028 */ 6029 len = inq_buf->additional_length 6030 + offsetof(struct scsi_inquiry_data, 6031 additional_length) + 1; 6032 if (softc->action == PROBE_INQUIRY 6033 && len > SHORT_INQUIRY_LENGTH) { 6034 softc->action = PROBE_FULL_INQUIRY; 6035 xpt_release_ccb(done_ccb); 6036 xpt_schedule(periph, priority); 6037 return; 6038 } 6039 6040 xpt_find_quirk(path->device); 6041 6042 #ifdef CAM_NEW_TRAN_CODE 6043 xpt_devise_transport(path); 6044 #endif /* CAM_NEW_TRAN_CODE */ 6045 if (INQ_DATA_TQ_ENABLED(inq_buf)) 6046 softc->action = PROBE_MODE_SENSE; 6047 else 6048 softc->action = PROBE_SERIAL_NUM; 6049 6050 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 6051 6052 xpt_release_ccb(done_ccb); 6053 xpt_schedule(periph, priority); 6054 return; 6055 } 6056 default: 6057 break; 6058 } 6059 } else if (cam_periph_error(done_ccb, 0, 6060 done_ccb->ccb_h.target_lun > 0 6061 ? SF_RETRY_UA|SF_QUIET_IR 6062 : SF_RETRY_UA, 6063 &softc->saved_ccb) == ERESTART) { 6064 return; 6065 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 6066 /* Don't wedge the queue */ 6067 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 6068 /*run_queue*/TRUE); 6069 } 6070 /* 6071 * If we get to this point, we got an error status back 6072 * from the inquiry and the error status doesn't require 6073 * automatically retrying the command. Therefore, the 6074 * inquiry failed. If we had inquiry information before 6075 * for this device, but this latest inquiry command failed, 6076 * the device has probably gone away. If this device isn't 6077 * already marked unconfigured, notify the peripheral 6078 * drivers that this device is no more. 6079 */ 6080 if ((path->device->flags & CAM_DEV_UNCONFIGURED) == 0) 6081 /* Send the async notification. */ 6082 xpt_async(AC_LOST_DEVICE, path, NULL); 6083 6084 xpt_release_ccb(done_ccb); 6085 break; 6086 } 6087 case PROBE_MODE_SENSE: 6088 { 6089 struct ccb_scsiio *csio; 6090 struct scsi_mode_header_6 *mode_hdr; 6091 6092 csio = &done_ccb->csio; 6093 mode_hdr = (struct scsi_mode_header_6 *)csio->data_ptr; 6094 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) { 6095 struct scsi_control_page *page; 6096 u_int8_t *offset; 6097 6098 offset = ((u_int8_t *)&mode_hdr[1]) 6099 + mode_hdr->blk_desc_len; 6100 page = (struct scsi_control_page *)offset; 6101 path->device->queue_flags = page->queue_flags; 6102 } else if (cam_periph_error(done_ccb, 0, 6103 SF_RETRY_UA|SF_NO_PRINT, 6104 &softc->saved_ccb) == ERESTART) { 6105 return; 6106 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 6107 /* Don't wedge the queue */ 6108 xpt_release_devq(done_ccb->ccb_h.path, 6109 /*count*/1, /*run_queue*/TRUE); 6110 } 6111 xpt_release_ccb(done_ccb); 6112 free(mode_hdr, M_TEMP); 6113 softc->action = PROBE_SERIAL_NUM; 6114 xpt_schedule(periph, priority); 6115 return; 6116 } 6117 case PROBE_SERIAL_NUM: 6118 { 6119 struct ccb_scsiio *csio; 6120 struct scsi_vpd_unit_serial_number *serial_buf; 6121 u_int32_t priority; 6122 int changed; 6123 int have_serialnum; 6124 6125 changed = 1; 6126 have_serialnum = 0; 6127 csio = &done_ccb->csio; 6128 priority = done_ccb->ccb_h.pinfo.priority; 6129 serial_buf = 6130 (struct scsi_vpd_unit_serial_number *)csio->data_ptr; 6131 6132 /* Clean up from previous instance of this device */ 6133 if (path->device->serial_num != NULL) { 6134 free(path->device->serial_num, M_CAMXPT); 6135 path->device->serial_num = NULL; 6136 path->device->serial_num_len = 0; 6137 } 6138 6139 if (serial_buf == NULL) { 6140 /* 6141 * Don't process the command as it was never sent 6142 */ 6143 } else if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 6144 && (serial_buf->length > 0)) { 6145 6146 have_serialnum = 1; 6147 path->device->serial_num = 6148 (u_int8_t *)malloc((serial_buf->length + 1), 6149 M_CAMXPT, M_NOWAIT); 6150 if (path->device->serial_num != NULL) { 6151 bcopy(serial_buf->serial_num, 6152 path->device->serial_num, 6153 serial_buf->length); 6154 path->device->serial_num_len = 6155 serial_buf->length; 6156 path->device->serial_num[serial_buf->length] 6157 = '\0'; 6158 } 6159 } else if (cam_periph_error(done_ccb, 0, 6160 SF_RETRY_UA|SF_NO_PRINT, 6161 &softc->saved_ccb) == ERESTART) { 6162 return; 6163 } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 6164 /* Don't wedge the queue */ 6165 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 6166 /*run_queue*/TRUE); 6167 } 6168 6169 /* 6170 * Let's see if we have seen this device before. 6171 */ 6172 if ((softc->flags & PROBE_INQUIRY_CKSUM) != 0) { 6173 MD5_CTX context; 6174 u_int8_t digest[16]; 6175 6176 MD5Init(&context); 6177 6178 MD5Update(&context, 6179 (unsigned char *)&path->device->inq_data, 6180 sizeof(struct scsi_inquiry_data)); 6181 6182 if (have_serialnum) 6183 MD5Update(&context, serial_buf->serial_num, 6184 serial_buf->length); 6185 6186 MD5Final(digest, &context); 6187 if (bcmp(softc->digest, digest, 16) == 0) 6188 changed = 0; 6189 6190 /* 6191 * XXX Do we need to do a TUR in order to ensure 6192 * that the device really hasn't changed??? 6193 */ 6194 if ((changed != 0) 6195 && ((softc->flags & PROBE_NO_ANNOUNCE) == 0)) 6196 xpt_async(AC_LOST_DEVICE, path, NULL); 6197 } 6198 if (serial_buf != NULL) 6199 free(serial_buf, M_TEMP); 6200 6201 if (changed != 0) { 6202 /* 6203 * Now that we have all the necessary 6204 * information to safely perform transfer 6205 * negotiations... Controllers don't perform 6206 * any negotiation or tagged queuing until 6207 * after the first XPT_SET_TRAN_SETTINGS ccb is 6208 * received. So, on a new device, just retreive 6209 * the user settings, and set them as the current 6210 * settings to set the device up. 6211 */ 6212 proberequestdefaultnegotiation(periph); 6213 xpt_release_ccb(done_ccb); 6214 6215 /* 6216 * Perform a TUR to allow the controller to 6217 * perform any necessary transfer negotiation. 6218 */ 6219 softc->action = PROBE_TUR_FOR_NEGOTIATION; 6220 xpt_schedule(periph, priority); 6221 return; 6222 } 6223 xpt_release_ccb(done_ccb); 6224 break; 6225 } 6226 case PROBE_TUR_FOR_NEGOTIATION: 6227 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 6228 /* Don't wedge the queue */ 6229 xpt_release_devq(done_ccb->ccb_h.path, /*count*/1, 6230 /*run_queue*/TRUE); 6231 } 6232 6233 path->device->flags &= ~CAM_DEV_UNCONFIGURED; 6234 6235 if ((softc->flags & PROBE_NO_ANNOUNCE) == 0) { 6236 /* Inform the XPT that a new device has been found */ 6237 done_ccb->ccb_h.func_code = XPT_GDEV_TYPE; 6238 xpt_action(done_ccb); 6239 6240 xpt_async(AC_FOUND_DEVICE, done_ccb->ccb_h.path, 6241 done_ccb); 6242 } 6243 xpt_release_ccb(done_ccb); 6244 break; 6245 } 6246 done_ccb = (union ccb *)TAILQ_FIRST(&softc->request_ccbs); 6247 TAILQ_REMOVE(&softc->request_ccbs, &done_ccb->ccb_h, periph_links.tqe); 6248 done_ccb->ccb_h.status = CAM_REQ_CMP; 6249 xpt_done(done_ccb); 6250 if (TAILQ_FIRST(&softc->request_ccbs) == NULL) { 6251 cam_periph_invalidate(periph); 6252 cam_periph_release(periph); 6253 } else { 6254 probeschedule(periph); 6255 } 6256 } 6257 6258 static void 6259 probecleanup(struct cam_periph *periph) 6260 { 6261 free(periph->softc, M_TEMP); 6262 } 6263 6264 static void 6265 xpt_find_quirk(struct cam_ed *device) 6266 { 6267 caddr_t match; 6268 6269 match = cam_quirkmatch((caddr_t)&device->inq_data, 6270 (caddr_t)xpt_quirk_table, 6271 sizeof(xpt_quirk_table)/sizeof(*xpt_quirk_table), 6272 sizeof(*xpt_quirk_table), scsi_inquiry_match); 6273 6274 if (match == NULL) 6275 panic("xpt_find_quirk: device didn't match wildcard entry!!"); 6276 6277 device->quirk = (struct xpt_quirk_entry *)match; 6278 } 6279 6280 static int 6281 sysctl_cam_search_luns(SYSCTL_HANDLER_ARGS) 6282 { 6283 int error, bool; 6284 6285 bool = cam_srch_hi; 6286 error = sysctl_handle_int(oidp, &bool, sizeof(bool), req); 6287 if (error != 0 || req->newptr == NULL) 6288 return (error); 6289 if (bool == 0 || bool == 1) { 6290 cam_srch_hi = bool; 6291 return (0); 6292 } else { 6293 return (EINVAL); 6294 } 6295 } 6296 6297 #ifdef CAM_NEW_TRAN_CODE 6298 6299 static void 6300 xpt_devise_transport(struct cam_path *path) 6301 { 6302 struct ccb_pathinq cpi; 6303 struct ccb_trans_settings cts; 6304 struct scsi_inquiry_data *inq_buf; 6305 6306 /* Get transport information from the SIM */ 6307 xpt_setup_ccb(&cpi.ccb_h, path, /*priority*/1); 6308 cpi.ccb_h.func_code = XPT_PATH_INQ; 6309 xpt_action((union ccb *)&cpi); 6310 6311 inq_buf = NULL; 6312 if ((path->device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0) 6313 inq_buf = &path->device->inq_data; 6314 path->device->protocol = PROTO_SCSI; 6315 path->device->protocol_version = 6316 inq_buf != NULL ? SID_ANSI_REV(inq_buf) : cpi.protocol_version; 6317 path->device->transport = cpi.transport; 6318 path->device->transport_version = cpi.transport_version; 6319 6320 /* 6321 * Any device not using SPI3 features should 6322 * be considered SPI2 or lower. 6323 */ 6324 if (inq_buf != NULL) { 6325 if (path->device->transport == XPORT_SPI 6326 && (inq_buf->spi3data & SID_SPI_MASK) == 0 6327 && path->device->transport_version > 2) 6328 path->device->transport_version = 2; 6329 } else { 6330 struct cam_ed* otherdev; 6331 6332 for (otherdev = TAILQ_FIRST(&path->target->ed_entries); 6333 otherdev != NULL; 6334 otherdev = TAILQ_NEXT(otherdev, links)) { 6335 if (otherdev != path->device) 6336 break; 6337 } 6338 6339 if (otherdev != NULL) { 6340 /* 6341 * Initially assume the same versioning as 6342 * prior luns for this target. 6343 */ 6344 path->device->protocol_version = 6345 otherdev->protocol_version; 6346 path->device->transport_version = 6347 otherdev->transport_version; 6348 } else { 6349 /* Until we know better, opt for safty */ 6350 path->device->protocol_version = 2; 6351 if (path->device->transport == XPORT_SPI) 6352 path->device->transport_version = 2; 6353 else 6354 path->device->transport_version = 0; 6355 } 6356 } 6357 6358 /* 6359 * XXX 6360 * For a device compliant with SPC-2 we should be able 6361 * to determine the transport version supported by 6362 * scrutinizing the version descriptors in the 6363 * inquiry buffer. 6364 */ 6365 6366 /* Tell the controller what we think */ 6367 xpt_setup_ccb(&cts.ccb_h, path, /*priority*/1); 6368 cts.ccb_h.func_code = XPT_SET_TRAN_SETTINGS; 6369 cts.type = CTS_TYPE_CURRENT_SETTINGS; 6370 cts.transport = path->device->transport; 6371 cts.transport_version = path->device->transport_version; 6372 cts.protocol = path->device->protocol; 6373 cts.protocol_version = path->device->protocol_version; 6374 cts.proto_specific.valid = 0; 6375 cts.xport_specific.valid = 0; 6376 xpt_action((union ccb *)&cts); 6377 } 6378 6379 static void 6380 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device, 6381 int async_update) 6382 { 6383 struct ccb_pathinq cpi; 6384 struct ccb_trans_settings cur_cts; 6385 struct ccb_trans_settings_scsi *scsi; 6386 struct ccb_trans_settings_scsi *cur_scsi; 6387 struct cam_sim *sim; 6388 struct scsi_inquiry_data *inq_data; 6389 6390 if (device == NULL) { 6391 cts->ccb_h.status = CAM_PATH_INVALID; 6392 xpt_done((union ccb *)cts); 6393 return; 6394 } 6395 6396 if (cts->protocol == PROTO_UNKNOWN 6397 || cts->protocol == PROTO_UNSPECIFIED) { 6398 cts->protocol = device->protocol; 6399 cts->protocol_version = device->protocol_version; 6400 } 6401 6402 if (cts->protocol_version == PROTO_VERSION_UNKNOWN 6403 || cts->protocol_version == PROTO_VERSION_UNSPECIFIED) 6404 cts->protocol_version = device->protocol_version; 6405 6406 if (cts->protocol != device->protocol) { 6407 xpt_print_path(cts->ccb_h.path); 6408 printf("Uninitialized Protocol %x:%x?\n", 6409 cts->protocol, device->protocol); 6410 cts->protocol = device->protocol; 6411 } 6412 6413 if (cts->protocol_version > device->protocol_version) { 6414 if (bootverbose) { 6415 xpt_print_path(cts->ccb_h.path); 6416 printf("Down reving Protocol Version from %d to %d?\n", 6417 cts->protocol_version, device->protocol_version); 6418 } 6419 cts->protocol_version = device->protocol_version; 6420 } 6421 6422 if (cts->transport == XPORT_UNKNOWN 6423 || cts->transport == XPORT_UNSPECIFIED) { 6424 cts->transport = device->transport; 6425 cts->transport_version = device->transport_version; 6426 } 6427 6428 if (cts->transport_version == XPORT_VERSION_UNKNOWN 6429 || cts->transport_version == XPORT_VERSION_UNSPECIFIED) 6430 cts->transport_version = device->transport_version; 6431 6432 if (cts->transport != device->transport) { 6433 xpt_print_path(cts->ccb_h.path); 6434 printf("Uninitialized Transport %x:%x?\n", 6435 cts->transport, device->transport); 6436 cts->transport = device->transport; 6437 } 6438 6439 if (cts->transport_version > device->transport_version) { 6440 if (bootverbose) { 6441 xpt_print_path(cts->ccb_h.path); 6442 printf("Down reving Transport Version from %d to %d?\n", 6443 cts->transport_version, 6444 device->transport_version); 6445 } 6446 cts->transport_version = device->transport_version; 6447 } 6448 6449 sim = cts->ccb_h.path->bus->sim; 6450 6451 /* 6452 * Nothing more of interest to do unless 6453 * this is a device connected via the 6454 * SCSI protocol. 6455 */ 6456 if (cts->protocol != PROTO_SCSI) { 6457 if (async_update == FALSE) 6458 (*(sim->sim_action))(sim, (union ccb *)cts); 6459 return; 6460 } 6461 6462 inq_data = &device->inq_data; 6463 scsi = &cts->proto_specific.scsi; 6464 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1); 6465 cpi.ccb_h.func_code = XPT_PATH_INQ; 6466 xpt_action((union ccb *)&cpi); 6467 6468 /* SCSI specific sanity checking */ 6469 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0 6470 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0 6471 || (device->queue_flags & SCP_QUEUE_DQUE) != 0 6472 || (device->quirk->mintags == 0)) { 6473 /* 6474 * Can't tag on hardware that doesn't support tags, 6475 * doesn't have it enabled, or has broken tag support. 6476 */ 6477 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 6478 } 6479 6480 if (async_update == FALSE) { 6481 /* 6482 * Perform sanity checking against what the 6483 * controller and device can do. 6484 */ 6485 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1); 6486 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 6487 cur_cts.type = cts->type; 6488 xpt_action((union ccb *)&cur_cts); 6489 6490 cur_scsi = &cur_cts.proto_specific.scsi; 6491 if ((scsi->valid & CTS_SCSI_VALID_TQ) == 0) { 6492 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 6493 scsi->flags |= cur_scsi->flags & CTS_SCSI_FLAGS_TAG_ENB; 6494 } 6495 if ((cur_scsi->valid & CTS_SCSI_VALID_TQ) == 0) 6496 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 6497 } 6498 6499 /* SPI specific sanity checking */ 6500 if (cts->transport == XPORT_SPI && async_update == FALSE) { 6501 u_int spi3caps; 6502 struct ccb_trans_settings_spi *spi; 6503 struct ccb_trans_settings_spi *cur_spi; 6504 6505 spi = &cts->xport_specific.spi; 6506 6507 cur_spi = &cur_cts.xport_specific.spi; 6508 6509 /* Fill in any gaps in what the user gave us */ 6510 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 6511 spi->sync_period = cur_spi->sync_period; 6512 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_RATE) == 0) 6513 spi->sync_period = 0; 6514 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 6515 spi->sync_offset = cur_spi->sync_offset; 6516 if ((cur_spi->valid & CTS_SPI_VALID_SYNC_OFFSET) == 0) 6517 spi->sync_offset = 0; 6518 if ((spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 6519 spi->ppr_options = cur_spi->ppr_options; 6520 if ((cur_spi->valid & CTS_SPI_VALID_PPR_OPTIONS) == 0) 6521 spi->ppr_options = 0; 6522 if ((spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 6523 spi->bus_width = cur_spi->bus_width; 6524 if ((cur_spi->valid & CTS_SPI_VALID_BUS_WIDTH) == 0) 6525 spi->bus_width = 0; 6526 if ((spi->valid & CTS_SPI_VALID_DISC) == 0) { 6527 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 6528 spi->flags |= cur_spi->flags & CTS_SPI_FLAGS_DISC_ENB; 6529 } 6530 if ((cur_spi->valid & CTS_SPI_VALID_DISC) == 0) 6531 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB; 6532 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 6533 && (inq_data->flags & SID_Sync) == 0 6534 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 6535 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0) 6536 || (cur_spi->sync_offset == 0) 6537 || (cur_spi->sync_period == 0)) { 6538 /* Force async */ 6539 spi->sync_period = 0; 6540 spi->sync_offset = 0; 6541 } 6542 6543 switch (spi->bus_width) { 6544 case MSG_EXT_WDTR_BUS_32_BIT: 6545 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 6546 || (inq_data->flags & SID_WBus32) != 0 6547 || cts->type == CTS_TYPE_USER_SETTINGS) 6548 && (cpi.hba_inquiry & PI_WIDE_32) != 0) 6549 break; 6550 /* Fall Through to 16-bit */ 6551 case MSG_EXT_WDTR_BUS_16_BIT: 6552 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 6553 || (inq_data->flags & SID_WBus16) != 0 6554 || cts->type == CTS_TYPE_USER_SETTINGS) 6555 && (cpi.hba_inquiry & PI_WIDE_16) != 0) { 6556 spi->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 6557 break; 6558 } 6559 /* Fall Through to 8-bit */ 6560 default: /* New bus width?? */ 6561 case MSG_EXT_WDTR_BUS_8_BIT: 6562 /* All targets can do this */ 6563 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 6564 break; 6565 } 6566 6567 spi3caps = cpi.xport_specific.spi.ppr_options; 6568 if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 6569 && cts->type == CTS_TYPE_CURRENT_SETTINGS) 6570 spi3caps &= inq_data->spi3data; 6571 6572 if ((spi3caps & SID_SPI_CLOCK_DT) == 0) 6573 spi->ppr_options &= ~MSG_EXT_PPR_DT_REQ; 6574 6575 if ((spi3caps & SID_SPI_IUS) == 0) 6576 spi->ppr_options &= ~MSG_EXT_PPR_IU_REQ; 6577 6578 if ((spi3caps & SID_SPI_QAS) == 0) 6579 spi->ppr_options &= ~MSG_EXT_PPR_QAS_REQ; 6580 6581 /* No SPI Transfer settings are allowed unless we are wide */ 6582 if (spi->bus_width == 0) 6583 spi->ppr_options = 0; 6584 6585 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) == 0) { 6586 /* 6587 * Can't tag queue without disconnection. 6588 */ 6589 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB; 6590 scsi->valid |= CTS_SCSI_VALID_TQ; 6591 } 6592 6593 /* 6594 * If we are currently performing tagged transactions to 6595 * this device and want to change its negotiation parameters, 6596 * go non-tagged for a bit to give the controller a chance to 6597 * negotiate unhampered by tag messages. 6598 */ 6599 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 6600 && (device->inq_flags & SID_CmdQue) != 0 6601 && (scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 6602 && (spi->flags & (CTS_SPI_VALID_SYNC_RATE| 6603 CTS_SPI_VALID_SYNC_OFFSET| 6604 CTS_SPI_VALID_BUS_WIDTH)) != 0) 6605 xpt_toggle_tags(cts->ccb_h.path); 6606 } 6607 6608 if (cts->type == CTS_TYPE_CURRENT_SETTINGS 6609 && (scsi->valid & CTS_SCSI_VALID_TQ) != 0) { 6610 int device_tagenb; 6611 6612 /* 6613 * If we are transitioning from tags to no-tags or 6614 * vice-versa, we need to carefully freeze and restart 6615 * the queue so that we don't overlap tagged and non-tagged 6616 * commands. We also temporarily stop tags if there is 6617 * a change in transfer negotiation settings to allow 6618 * "tag-less" negotiation. 6619 */ 6620 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 6621 || (device->inq_flags & SID_CmdQue) != 0) 6622 device_tagenb = TRUE; 6623 else 6624 device_tagenb = FALSE; 6625 6626 if (((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0 6627 && device_tagenb == FALSE) 6628 || ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) == 0 6629 && device_tagenb == TRUE)) { 6630 6631 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0) { 6632 /* 6633 * Delay change to use tags until after a 6634 * few commands have gone to this device so 6635 * the controller has time to perform transfer 6636 * negotiations without tagged messages getting 6637 * in the way. 6638 */ 6639 device->tag_delay_count = CAM_TAG_DELAY_COUNT; 6640 device->flags |= CAM_DEV_TAG_AFTER_COUNT; 6641 } else { 6642 struct ccb_relsim crs; 6643 6644 xpt_freeze_devq(cts->ccb_h.path, /*count*/1); 6645 device->inq_flags &= ~SID_CmdQue; 6646 xpt_dev_ccbq_resize(cts->ccb_h.path, 6647 sim->max_dev_openings); 6648 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT; 6649 device->tag_delay_count = 0; 6650 6651 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path, 6652 /*priority*/1); 6653 crs.ccb_h.func_code = XPT_REL_SIMQ; 6654 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY; 6655 crs.openings 6656 = crs.release_timeout 6657 = crs.qfrozen_cnt 6658 = 0; 6659 xpt_action((union ccb *)&crs); 6660 } 6661 } 6662 } 6663 if (async_update == FALSE) 6664 (*(sim->sim_action))(sim, (union ccb *)cts); 6665 } 6666 6667 #else /* CAM_NEW_TRAN_CODE */ 6668 6669 static void 6670 xpt_set_transfer_settings(struct ccb_trans_settings *cts, struct cam_ed *device, 6671 int async_update) 6672 { 6673 struct cam_sim *sim; 6674 int qfrozen; 6675 6676 sim = cts->ccb_h.path->bus->sim; 6677 if (async_update == FALSE) { 6678 struct scsi_inquiry_data *inq_data; 6679 struct ccb_pathinq cpi; 6680 struct ccb_trans_settings cur_cts; 6681 6682 if (device == NULL) { 6683 cts->ccb_h.status = CAM_PATH_INVALID; 6684 xpt_done((union ccb *)cts); 6685 return; 6686 } 6687 6688 /* 6689 * Perform sanity checking against what the 6690 * controller and device can do. 6691 */ 6692 xpt_setup_ccb(&cpi.ccb_h, cts->ccb_h.path, /*priority*/1); 6693 cpi.ccb_h.func_code = XPT_PATH_INQ; 6694 xpt_action((union ccb *)&cpi); 6695 xpt_setup_ccb(&cur_cts.ccb_h, cts->ccb_h.path, /*priority*/1); 6696 cur_cts.ccb_h.func_code = XPT_GET_TRAN_SETTINGS; 6697 cur_cts.flags = CCB_TRANS_CURRENT_SETTINGS; 6698 xpt_action((union ccb *)&cur_cts); 6699 inq_data = &device->inq_data; 6700 6701 /* Fill in any gaps in what the user gave us */ 6702 if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) == 0) 6703 cts->sync_period = cur_cts.sync_period; 6704 if ((cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) == 0) 6705 cts->sync_offset = cur_cts.sync_offset; 6706 if ((cts->valid & CCB_TRANS_BUS_WIDTH_VALID) == 0) 6707 cts->bus_width = cur_cts.bus_width; 6708 if ((cts->valid & CCB_TRANS_DISC_VALID) == 0) { 6709 cts->flags &= ~CCB_TRANS_DISC_ENB; 6710 cts->flags |= cur_cts.flags & CCB_TRANS_DISC_ENB; 6711 } 6712 if ((cts->valid & CCB_TRANS_TQ_VALID) == 0) { 6713 cts->flags &= ~CCB_TRANS_TAG_ENB; 6714 cts->flags |= cur_cts.flags & CCB_TRANS_TAG_ENB; 6715 } 6716 6717 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 6718 && (inq_data->flags & SID_Sync) == 0) 6719 || ((cpi.hba_inquiry & PI_SDTR_ABLE) == 0) 6720 || (cts->sync_offset == 0) 6721 || (cts->sync_period == 0)) { 6722 /* Force async */ 6723 cts->sync_period = 0; 6724 cts->sync_offset = 0; 6725 } else if ((device->flags & CAM_DEV_INQUIRY_DATA_VALID) != 0 6726 && (inq_data->spi3data & SID_SPI_CLOCK_DT) == 0 6727 && cts->sync_period <= 0x9) { 6728 /* 6729 * Don't allow DT transmission rates if the 6730 * device does not support it. 6731 */ 6732 cts->sync_period = 0xa; 6733 } 6734 6735 switch (cts->bus_width) { 6736 case MSG_EXT_WDTR_BUS_32_BIT: 6737 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 6738 || (inq_data->flags & SID_WBus32) != 0) 6739 && (cpi.hba_inquiry & PI_WIDE_32) != 0) 6740 break; 6741 /* FALLTHROUGH to 16-bit */ 6742 case MSG_EXT_WDTR_BUS_16_BIT: 6743 if (((device->flags & CAM_DEV_INQUIRY_DATA_VALID) == 0 6744 || (inq_data->flags & SID_WBus16) != 0) 6745 && (cpi.hba_inquiry & PI_WIDE_16) != 0) { 6746 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 6747 break; 6748 } 6749 /* FALLTHROUGH to 8-bit */ 6750 default: /* New bus width?? */ 6751 case MSG_EXT_WDTR_BUS_8_BIT: 6752 /* All targets can do this */ 6753 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 6754 break; 6755 } 6756 6757 if ((cts->flags & CCB_TRANS_DISC_ENB) == 0) { 6758 /* 6759 * Can't tag queue without disconnection. 6760 */ 6761 cts->flags &= ~CCB_TRANS_TAG_ENB; 6762 cts->valid |= CCB_TRANS_TQ_VALID; 6763 } 6764 6765 if ((cpi.hba_inquiry & PI_TAG_ABLE) == 0 6766 || (INQ_DATA_TQ_ENABLED(inq_data)) == 0 6767 || (device->queue_flags & SCP_QUEUE_DQUE) != 0 6768 || (device->quirk->mintags == 0)) { 6769 /* 6770 * Can't tag on hardware that doesn't support, 6771 * doesn't have it enabled, or has broken tag support. 6772 */ 6773 cts->flags &= ~CCB_TRANS_TAG_ENB; 6774 } 6775 } 6776 6777 qfrozen = FALSE; 6778 if ((cts->valid & CCB_TRANS_TQ_VALID) != 0) { 6779 int device_tagenb; 6780 6781 /* 6782 * If we are transitioning from tags to no-tags or 6783 * vice-versa, we need to carefully freeze and restart 6784 * the queue so that we don't overlap tagged and non-tagged 6785 * commands. We also temporarily stop tags if there is 6786 * a change in transfer negotiation settings to allow 6787 * "tag-less" negotiation. 6788 */ 6789 if ((device->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 6790 || (device->inq_flags & SID_CmdQue) != 0) 6791 device_tagenb = TRUE; 6792 else 6793 device_tagenb = FALSE; 6794 6795 if (((cts->flags & CCB_TRANS_TAG_ENB) != 0 6796 && device_tagenb == FALSE) 6797 || ((cts->flags & CCB_TRANS_TAG_ENB) == 0 6798 && device_tagenb == TRUE)) { 6799 6800 if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) { 6801 /* 6802 * Delay change to use tags until after a 6803 * few commands have gone to this device so 6804 * the controller has time to perform transfer 6805 * negotiations without tagged messages getting 6806 * in the way. 6807 */ 6808 device->tag_delay_count = CAM_TAG_DELAY_COUNT; 6809 device->flags |= CAM_DEV_TAG_AFTER_COUNT; 6810 } else { 6811 xpt_freeze_devq(cts->ccb_h.path, /*count*/1); 6812 qfrozen = TRUE; 6813 device->inq_flags &= ~SID_CmdQue; 6814 xpt_dev_ccbq_resize(cts->ccb_h.path, 6815 sim->max_dev_openings); 6816 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT; 6817 device->tag_delay_count = 0; 6818 } 6819 } 6820 } 6821 6822 if (async_update == FALSE) { 6823 /* 6824 * If we are currently performing tagged transactions to 6825 * this device and want to change its negotiation parameters, 6826 * go non-tagged for a bit to give the controller a chance to 6827 * negotiate unhampered by tag messages. 6828 */ 6829 if ((device->inq_flags & SID_CmdQue) != 0 6830 && (cts->flags & (CCB_TRANS_SYNC_RATE_VALID| 6831 CCB_TRANS_SYNC_OFFSET_VALID| 6832 CCB_TRANS_BUS_WIDTH_VALID)) != 0) 6833 xpt_toggle_tags(cts->ccb_h.path); 6834 6835 (*(sim->sim_action))(sim, (union ccb *)cts); 6836 } 6837 6838 if (qfrozen) { 6839 struct ccb_relsim crs; 6840 6841 xpt_setup_ccb(&crs.ccb_h, cts->ccb_h.path, 6842 /*priority*/1); 6843 crs.ccb_h.func_code = XPT_REL_SIMQ; 6844 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY; 6845 crs.openings 6846 = crs.release_timeout 6847 = crs.qfrozen_cnt 6848 = 0; 6849 xpt_action((union ccb *)&crs); 6850 } 6851 } 6852 6853 6854 #endif /* CAM_NEW_TRAN_CODE */ 6855 6856 static void 6857 xpt_toggle_tags(struct cam_path *path) 6858 { 6859 struct cam_ed *dev; 6860 6861 /* 6862 * Give controllers a chance to renegotiate 6863 * before starting tag operations. We 6864 * "toggle" tagged queuing off then on 6865 * which causes the tag enable command delay 6866 * counter to come into effect. 6867 */ 6868 dev = path->device; 6869 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 6870 || ((dev->inq_flags & SID_CmdQue) != 0 6871 && (dev->inq_flags & (SID_Sync|SID_WBus16|SID_WBus32)) != 0)) { 6872 struct ccb_trans_settings cts; 6873 6874 xpt_setup_ccb(&cts.ccb_h, path, 1); 6875 #ifdef CAM_NEW_TRAN_CODE 6876 cts.protocol = PROTO_SCSI; 6877 cts.protocol_version = PROTO_VERSION_UNSPECIFIED; 6878 cts.transport = XPORT_UNSPECIFIED; 6879 cts.transport_version = XPORT_VERSION_UNSPECIFIED; 6880 cts.proto_specific.scsi.flags = 0; 6881 cts.proto_specific.scsi.valid = CTS_SCSI_VALID_TQ; 6882 #else /* CAM_NEW_TRAN_CODE */ 6883 cts.flags = 0; 6884 cts.valid = CCB_TRANS_TQ_VALID; 6885 #endif /* CAM_NEW_TRAN_CODE */ 6886 xpt_set_transfer_settings(&cts, path->device, 6887 /*async_update*/TRUE); 6888 #ifdef CAM_NEW_TRAN_CODE 6889 cts.proto_specific.scsi.flags = CTS_SCSI_FLAGS_TAG_ENB; 6890 #else /* CAM_NEW_TRAN_CODE */ 6891 cts.flags = CCB_TRANS_TAG_ENB; 6892 #endif /* CAM_NEW_TRAN_CODE */ 6893 xpt_set_transfer_settings(&cts, path->device, 6894 /*async_update*/TRUE); 6895 } 6896 } 6897 6898 static void 6899 xpt_start_tags(struct cam_path *path) 6900 { 6901 struct ccb_relsim crs; 6902 struct cam_ed *device; 6903 struct cam_sim *sim; 6904 int newopenings; 6905 6906 device = path->device; 6907 sim = path->bus->sim; 6908 device->flags &= ~CAM_DEV_TAG_AFTER_COUNT; 6909 xpt_freeze_devq(path, /*count*/1); 6910 device->inq_flags |= SID_CmdQue; 6911 if (device->tag_saved_openings != 0) 6912 newopenings = device->tag_saved_openings; 6913 else 6914 newopenings = min(device->quirk->maxtags, 6915 sim->max_tagged_dev_openings); 6916 xpt_dev_ccbq_resize(path, newopenings); 6917 xpt_setup_ccb(&crs.ccb_h, path, /*priority*/1); 6918 crs.ccb_h.func_code = XPT_REL_SIMQ; 6919 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY; 6920 crs.openings 6921 = crs.release_timeout 6922 = crs.qfrozen_cnt 6923 = 0; 6924 xpt_action((union ccb *)&crs); 6925 } 6926 6927 static int busses_to_config; 6928 static int busses_to_reset; 6929 6930 static int 6931 xptconfigbuscountfunc(struct cam_eb *bus, void *arg) 6932 { 6933 if (bus->path_id != CAM_XPT_PATH_ID) { 6934 struct cam_path path; 6935 struct ccb_pathinq cpi; 6936 int can_negotiate; 6937 6938 busses_to_config++; 6939 xpt_compile_path(&path, NULL, bus->path_id, 6940 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 6941 xpt_setup_ccb(&cpi.ccb_h, &path, /*priority*/1); 6942 cpi.ccb_h.func_code = XPT_PATH_INQ; 6943 xpt_action((union ccb *)&cpi); 6944 can_negotiate = cpi.hba_inquiry; 6945 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE); 6946 if ((cpi.hba_misc & PIM_NOBUSRESET) == 0 6947 && can_negotiate) 6948 busses_to_reset++; 6949 xpt_release_path(&path); 6950 } 6951 6952 return(1); 6953 } 6954 6955 static int 6956 xptconfigfunc(struct cam_eb *bus, void *arg) 6957 { 6958 struct cam_path *path; 6959 union ccb *work_ccb; 6960 6961 if (bus->path_id != CAM_XPT_PATH_ID) { 6962 cam_status status; 6963 int can_negotiate; 6964 6965 work_ccb = xpt_alloc_ccb(); 6966 if ((status = xpt_create_path(&path, xpt_periph, bus->path_id, 6967 CAM_TARGET_WILDCARD, 6968 CAM_LUN_WILDCARD)) !=CAM_REQ_CMP){ 6969 printf("xptconfigfunc: xpt_create_path failed with " 6970 "status %#x for bus %d\n", status, bus->path_id); 6971 printf("xptconfigfunc: halting bus configuration\n"); 6972 xpt_free_ccb(work_ccb); 6973 busses_to_config--; 6974 xpt_finishconfig(xpt_periph, NULL); 6975 return(0); 6976 } 6977 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1); 6978 work_ccb->ccb_h.func_code = XPT_PATH_INQ; 6979 xpt_action(work_ccb); 6980 if (work_ccb->ccb_h.status != CAM_REQ_CMP) { 6981 printf("xptconfigfunc: CPI failed on bus %d " 6982 "with status %d\n", bus->path_id, 6983 work_ccb->ccb_h.status); 6984 xpt_finishconfig(xpt_periph, work_ccb); 6985 return(1); 6986 } 6987 6988 can_negotiate = work_ccb->cpi.hba_inquiry; 6989 can_negotiate &= (PI_WIDE_32|PI_WIDE_16|PI_SDTR_ABLE); 6990 if ((work_ccb->cpi.hba_misc & PIM_NOBUSRESET) == 0 6991 && (can_negotiate != 0)) { 6992 xpt_setup_ccb(&work_ccb->ccb_h, path, /*priority*/1); 6993 work_ccb->ccb_h.func_code = XPT_RESET_BUS; 6994 work_ccb->ccb_h.cbfcnp = NULL; 6995 CAM_DEBUG(path, CAM_DEBUG_SUBTRACE, 6996 ("Resetting Bus\n")); 6997 xpt_action(work_ccb); 6998 xpt_finishconfig(xpt_periph, work_ccb); 6999 } else { 7000 /* Act as though we performed a successful BUS RESET */ 7001 work_ccb->ccb_h.func_code = XPT_RESET_BUS; 7002 xpt_finishconfig(xpt_periph, work_ccb); 7003 } 7004 } 7005 7006 return(1); 7007 } 7008 7009 static void 7010 xpt_config(void *arg) 7011 { 7012 /* 7013 * Now that interrupts are enabled, go find our devices 7014 */ 7015 7016 #ifdef CAMDEBUG 7017 /* Setup debugging flags and path */ 7018 #ifdef CAM_DEBUG_FLAGS 7019 cam_dflags = CAM_DEBUG_FLAGS; 7020 #else /* !CAM_DEBUG_FLAGS */ 7021 cam_dflags = CAM_DEBUG_NONE; 7022 #endif /* CAM_DEBUG_FLAGS */ 7023 #ifdef CAM_DEBUG_BUS 7024 if (cam_dflags != CAM_DEBUG_NONE) { 7025 if (xpt_create_path(&cam_dpath, xpt_periph, 7026 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, 7027 CAM_DEBUG_LUN) != CAM_REQ_CMP) { 7028 printf("xpt_config: xpt_create_path() failed for debug" 7029 " target %d:%d:%d, debugging disabled\n", 7030 CAM_DEBUG_BUS, CAM_DEBUG_TARGET, CAM_DEBUG_LUN); 7031 cam_dflags = CAM_DEBUG_NONE; 7032 } 7033 } else 7034 cam_dpath = NULL; 7035 #else /* !CAM_DEBUG_BUS */ 7036 cam_dpath = NULL; 7037 #endif /* CAM_DEBUG_BUS */ 7038 #endif /* CAMDEBUG */ 7039 7040 /* 7041 * Scan all installed busses. 7042 */ 7043 xpt_for_all_busses(xptconfigbuscountfunc, NULL); 7044 7045 if (busses_to_config == 0) { 7046 /* Call manually because we don't have any busses */ 7047 xpt_finishconfig(xpt_periph, NULL); 7048 } else { 7049 if (busses_to_reset > 0 && scsi_delay >= 2000) { 7050 printf("Waiting %d seconds for SCSI " 7051 "devices to settle\n", scsi_delay/1000); 7052 } 7053 xpt_for_all_busses(xptconfigfunc, NULL); 7054 } 7055 } 7056 7057 /* 7058 * If the given device only has one peripheral attached to it, and if that 7059 * peripheral is the passthrough driver, announce it. This insures that the 7060 * user sees some sort of announcement for every peripheral in their system. 7061 */ 7062 static int 7063 xptpassannouncefunc(struct cam_ed *device, void *arg) 7064 { 7065 struct cam_periph *periph; 7066 int i; 7067 7068 for (periph = SLIST_FIRST(&device->periphs), i = 0; periph != NULL; 7069 periph = SLIST_NEXT(periph, periph_links), i++); 7070 7071 periph = SLIST_FIRST(&device->periphs); 7072 if ((i == 1) 7073 && (strncmp(periph->periph_name, "pass", 4) == 0)) 7074 xpt_announce_periph(periph, NULL); 7075 7076 return(1); 7077 } 7078 7079 static void 7080 xpt_finishconfig(struct cam_periph *periph, union ccb *done_ccb) 7081 { 7082 struct periph_driver **p_drv; 7083 int i; 7084 7085 if (done_ccb != NULL) { 7086 CAM_DEBUG(done_ccb->ccb_h.path, CAM_DEBUG_TRACE, 7087 ("xpt_finishconfig\n")); 7088 switch(done_ccb->ccb_h.func_code) { 7089 case XPT_RESET_BUS: 7090 if (done_ccb->ccb_h.status == CAM_REQ_CMP) { 7091 done_ccb->ccb_h.func_code = XPT_SCAN_BUS; 7092 done_ccb->ccb_h.cbfcnp = xpt_finishconfig; 7093 done_ccb->crcn.flags = 0; 7094 xpt_action(done_ccb); 7095 return; 7096 } 7097 /* FALLTHROUGH */ 7098 case XPT_SCAN_BUS: 7099 default: 7100 xpt_free_path(done_ccb->ccb_h.path); 7101 busses_to_config--; 7102 break; 7103 } 7104 } 7105 7106 if (busses_to_config == 0) { 7107 /* Register all the peripheral drivers */ 7108 /* XXX This will have to change when we have loadable modules */ 7109 p_drv = periph_drivers; 7110 for (i = 0; p_drv[i] != NULL; i++) { 7111 (*p_drv[i]->init)(); 7112 } 7113 7114 /* 7115 * Check for devices with no "standard" peripheral driver 7116 * attached. For any devices like that, announce the 7117 * passthrough driver so the user will see something. 7118 */ 7119 xpt_for_all_devices(xptpassannouncefunc, NULL); 7120 7121 /* Release our hook so that the boot can continue. */ 7122 config_intrhook_disestablish(xpt_config_hook); 7123 free(xpt_config_hook, M_TEMP); 7124 xpt_config_hook = NULL; 7125 } 7126 if (done_ccb != NULL) 7127 xpt_free_ccb(done_ccb); 7128 } 7129 7130 static void 7131 xptaction(struct cam_sim *sim, union ccb *work_ccb) 7132 { 7133 CAM_DEBUG(work_ccb->ccb_h.path, CAM_DEBUG_TRACE, ("xptaction\n")); 7134 7135 switch (work_ccb->ccb_h.func_code) { 7136 /* Common cases first */ 7137 case XPT_PATH_INQ: /* Path routing inquiry */ 7138 { 7139 struct ccb_pathinq *cpi; 7140 7141 cpi = &work_ccb->cpi; 7142 cpi->version_num = 1; /* XXX??? */ 7143 cpi->hba_inquiry = 0; 7144 cpi->target_sprt = 0; 7145 cpi->hba_misc = 0; 7146 cpi->hba_eng_cnt = 0; 7147 cpi->max_target = 0; 7148 cpi->max_lun = 0; 7149 cpi->initiator_id = 0; 7150 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 7151 strncpy(cpi->hba_vid, "", HBA_IDLEN); 7152 strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN); 7153 cpi->unit_number = sim->unit_number; 7154 cpi->bus_id = sim->bus_id; 7155 cpi->base_transfer_speed = 0; 7156 #ifdef CAM_NEW_TRAN_CODE 7157 cpi->protocol = PROTO_UNSPECIFIED; 7158 cpi->protocol_version = PROTO_VERSION_UNSPECIFIED; 7159 cpi->transport = XPORT_UNSPECIFIED; 7160 cpi->transport_version = XPORT_VERSION_UNSPECIFIED; 7161 #endif /* CAM_NEW_TRAN_CODE */ 7162 cpi->ccb_h.status = CAM_REQ_CMP; 7163 xpt_done(work_ccb); 7164 break; 7165 } 7166 default: 7167 work_ccb->ccb_h.status = CAM_REQ_INVALID; 7168 xpt_done(work_ccb); 7169 break; 7170 } 7171 } 7172 7173 /* 7174 * The xpt as a "controller" has no interrupt sources, so polling 7175 * is a no-op. 7176 */ 7177 static void 7178 xptpoll(struct cam_sim *sim) 7179 { 7180 } 7181 7182 static void 7183 camisr(void *V_queue) 7184 { 7185 cam_isrq_t *oqueue = V_queue; 7186 cam_isrq_t queue; 7187 int s; 7188 struct ccb_hdr *ccb_h; 7189 7190 /* 7191 * Transfer the ccb_bioq list to a temporary list so we can operate 7192 * on it without needing to lock/unlock on every loop. The concat 7193 * function with re-init the real list for us. 7194 */ 7195 s = splcam(); 7196 mtx_lock(&cam_bioq_lock); 7197 TAILQ_INIT(&queue); 7198 TAILQ_CONCAT(&queue, oqueue, sim_links.tqe); 7199 mtx_unlock(&cam_bioq_lock); 7200 7201 while ((ccb_h = TAILQ_FIRST(&queue)) != NULL) { 7202 int runq; 7203 7204 TAILQ_REMOVE(&queue, ccb_h, sim_links.tqe); 7205 ccb_h->pinfo.index = CAM_UNQUEUED_INDEX; 7206 splx(s); 7207 7208 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE, 7209 ("camisr\n")); 7210 7211 runq = FALSE; 7212 7213 if (ccb_h->flags & CAM_HIGH_POWER) { 7214 struct highpowerlist *hphead; 7215 union ccb *send_ccb; 7216 7217 hphead = &highpowerq; 7218 7219 send_ccb = (union ccb *)STAILQ_FIRST(hphead); 7220 7221 /* 7222 * Increment the count since this command is done. 7223 */ 7224 num_highpower++; 7225 7226 /* 7227 * Any high powered commands queued up? 7228 */ 7229 if (send_ccb != NULL) { 7230 7231 STAILQ_REMOVE_HEAD(hphead, xpt_links.stqe); 7232 7233 xpt_release_devq(send_ccb->ccb_h.path, 7234 /*count*/1, /*runqueue*/TRUE); 7235 } 7236 } 7237 if ((ccb_h->func_code & XPT_FC_USER_CCB) == 0) { 7238 struct cam_ed *dev; 7239 7240 dev = ccb_h->path->device; 7241 7242 s = splcam(); 7243 cam_ccbq_ccb_done(&dev->ccbq, (union ccb *)ccb_h); 7244 7245 if (!SIM_DEAD(ccb_h->path->bus->sim)) { 7246 ccb_h->path->bus->sim->devq->send_active--; 7247 ccb_h->path->bus->sim->devq->send_openings++; 7248 } 7249 splx(s); 7250 7251 if (((dev->flags & CAM_DEV_REL_ON_COMPLETE) != 0 7252 && (ccb_h->status&CAM_STATUS_MASK) != CAM_REQUEUE_REQ) 7253 || ((dev->flags & CAM_DEV_REL_ON_QUEUE_EMPTY) != 0 7254 && (dev->ccbq.dev_active == 0))) { 7255 7256 xpt_release_devq(ccb_h->path, /*count*/1, 7257 /*run_queue*/TRUE); 7258 } 7259 7260 if ((dev->flags & CAM_DEV_TAG_AFTER_COUNT) != 0 7261 && (--dev->tag_delay_count == 0)) 7262 xpt_start_tags(ccb_h->path); 7263 7264 if ((dev->ccbq.queue.entries > 0) 7265 && (dev->qfrozen_cnt == 0) 7266 && (device_is_send_queued(dev) == 0)) { 7267 runq = xpt_schedule_dev_sendq(ccb_h->path->bus, 7268 dev); 7269 } 7270 } 7271 7272 if (ccb_h->status & CAM_RELEASE_SIMQ) { 7273 xpt_release_simq(ccb_h->path->bus->sim, 7274 /*run_queue*/TRUE); 7275 ccb_h->status &= ~CAM_RELEASE_SIMQ; 7276 runq = FALSE; 7277 } 7278 7279 if ((ccb_h->flags & CAM_DEV_QFRZDIS) 7280 && (ccb_h->status & CAM_DEV_QFRZN)) { 7281 xpt_release_devq(ccb_h->path, /*count*/1, 7282 /*run_queue*/TRUE); 7283 ccb_h->status &= ~CAM_DEV_QFRZN; 7284 } else if (runq) { 7285 xpt_run_dev_sendq(ccb_h->path->bus); 7286 } 7287 7288 /* Call the peripheral driver's callback */ 7289 (*ccb_h->cbfcnp)(ccb_h->path->periph, (union ccb *)ccb_h); 7290 7291 /* Raise IPL for while test */ 7292 s = splcam(); 7293 } 7294 splx(s); 7295 } 7296 7297 static void 7298 dead_sim_action(struct cam_sim *sim, union ccb *ccb) 7299 { 7300 7301 ccb->ccb_h.status = CAM_DEV_NOT_THERE; 7302 xpt_done(ccb); 7303 } 7304 7305 static void 7306 dead_sim_poll(struct cam_sim *sim) 7307 { 7308 } 7309