1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * Copyright (c) 2013, 2014, 2015, 2021 Spectra Logic Corporation 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #include <sys/time.h> 41 #include <sys/bio.h> 42 #include <sys/limits.h> 43 #include <sys/malloc.h> 44 #include <sys/mtio.h> 45 #ifdef _KERNEL 46 #include <sys/conf.h> 47 #include <sys/sbuf.h> 48 #include <sys/sysctl.h> 49 #include <sys/taskqueue.h> 50 #endif 51 #include <sys/fcntl.h> 52 #include <sys/devicestat.h> 53 54 #ifndef _KERNEL 55 #include <stdio.h> 56 #include <string.h> 57 #endif 58 59 #include <cam/cam.h> 60 #include <cam/cam_ccb.h> 61 #include <cam/cam_periph.h> 62 #include <cam/cam_xpt_periph.h> 63 #include <cam/cam_debug.h> 64 65 #include <cam/scsi/scsi_all.h> 66 #include <cam/scsi/scsi_message.h> 67 #include <cam/scsi/scsi_sa.h> 68 69 #ifdef _KERNEL 70 71 #include "opt_sa.h" 72 73 #ifndef SA_IO_TIMEOUT 74 #define SA_IO_TIMEOUT 32 75 #endif 76 #ifndef SA_SPACE_TIMEOUT 77 #define SA_SPACE_TIMEOUT 1 * 60 78 #endif 79 #ifndef SA_REWIND_TIMEOUT 80 #define SA_REWIND_TIMEOUT 2 * 60 81 #endif 82 #ifndef SA_ERASE_TIMEOUT 83 #define SA_ERASE_TIMEOUT 4 * 60 84 #endif 85 #ifndef SA_REP_DENSITY_TIMEOUT 86 #define SA_REP_DENSITY_TIMEOUT 1 87 #endif 88 89 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 90 91 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 92 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 93 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 94 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 95 #define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000) 96 97 /* 98 * Additional options that can be set for config: SA_1FM_AT_EOT 99 */ 100 101 #ifndef UNUSED_PARAMETER 102 #define UNUSED_PARAMETER(x) x = x 103 #endif 104 105 #define QFRLS(ccb) \ 106 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 107 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 108 109 /* 110 * Driver states 111 */ 112 113 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 114 115 typedef enum { 116 SA_STATE_NORMAL, SA_STATE_PROBE, SA_STATE_ABNORMAL 117 } sa_state; 118 119 #define ccb_pflags ppriv_field0 120 #define ccb_bp ppriv_ptr1 121 122 /* bits in ccb_pflags */ 123 #define SA_POSITION_UPDATED 0x1 124 125 typedef enum { 126 SA_FLAG_OPEN = 0x00001, 127 SA_FLAG_FIXED = 0x00002, 128 SA_FLAG_TAPE_LOCKED = 0x00004, 129 SA_FLAG_TAPE_MOUNTED = 0x00008, 130 SA_FLAG_TAPE_WP = 0x00010, 131 SA_FLAG_TAPE_WRITTEN = 0x00020, 132 SA_FLAG_EOM_PENDING = 0x00040, 133 SA_FLAG_EIO_PENDING = 0x00080, 134 SA_FLAG_EOF_PENDING = 0x00100, 135 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 136 SA_FLAG_EOF_PENDING), 137 SA_FLAG_INVALID = 0x00200, 138 SA_FLAG_COMP_ENABLED = 0x00400, 139 SA_FLAG_COMP_SUPP = 0x00800, 140 SA_FLAG_COMP_UNSUPP = 0x01000, 141 SA_FLAG_TAPE_FROZEN = 0x02000, 142 SA_FLAG_PROTECT_SUPP = 0x04000, 143 144 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 145 SA_FLAG_COMP_UNSUPP), 146 SA_FLAG_SCTX_INIT = 0x08000, 147 SA_FLAG_RSOC_TO_TRY = 0x10000, 148 } sa_flags; 149 150 typedef enum { 151 SA_MODE_REWIND = 0x00, 152 SA_MODE_NOREWIND = 0x01, 153 SA_MODE_OFFLINE = 0x02 154 } sa_mode; 155 156 typedef enum { 157 SA_TIMEOUT_ERASE, 158 SA_TIMEOUT_LOAD, 159 SA_TIMEOUT_LOCATE, 160 SA_TIMEOUT_MODE_SELECT, 161 SA_TIMEOUT_MODE_SENSE, 162 SA_TIMEOUT_PREVENT, 163 SA_TIMEOUT_READ, 164 SA_TIMEOUT_READ_BLOCK_LIMITS, 165 SA_TIMEOUT_READ_POSITION, 166 SA_TIMEOUT_REP_DENSITY, 167 SA_TIMEOUT_RESERVE, 168 SA_TIMEOUT_REWIND, 169 SA_TIMEOUT_SPACE, 170 SA_TIMEOUT_TUR, 171 SA_TIMEOUT_WRITE, 172 SA_TIMEOUT_WRITE_FILEMARKS, 173 SA_TIMEOUT_TYPE_MAX 174 } sa_timeout_types; 175 176 /* 177 * These are the default timeout values that apply to all tape drives. 178 * 179 * We get timeouts from the following places in order of increasing 180 * priority: 181 * 1. Driver default timeouts. (Set in the structure below.) 182 * 2. Timeouts loaded from the drive via REPORT SUPPORTED OPERATION 183 * CODES. (If the drive supports it, SPC-4/LTO-5 and newer should.) 184 * 3. Global loader tunables, used for all sa(4) driver instances on 185 * a machine. 186 * 4. Instance-specific loader tunables, used for say sa5. 187 * 5. On the fly user sysctl changes. 188 * 189 * Each step will overwrite the timeout value set from the one 190 * before, so you go from general to most specific. 191 */ 192 static struct sa_timeout_desc { 193 const char *desc; 194 int value; 195 } sa_default_timeouts[SA_TIMEOUT_TYPE_MAX] = { 196 {"erase", ERASE_TIMEOUT}, 197 {"load", REWIND_TIMEOUT}, 198 {"locate", SPACE_TIMEOUT}, 199 {"mode_select", SCSIOP_TIMEOUT}, 200 {"mode_sense", SCSIOP_TIMEOUT}, 201 {"prevent", SCSIOP_TIMEOUT}, 202 {"read", IO_TIMEOUT}, 203 {"read_block_limits", SCSIOP_TIMEOUT}, 204 {"read_position", SCSIOP_TIMEOUT}, 205 {"report_density", REP_DENSITY_TIMEOUT}, 206 {"reserve", SCSIOP_TIMEOUT}, 207 {"rewind", REWIND_TIMEOUT}, 208 {"space", SPACE_TIMEOUT}, 209 {"tur", SCSIOP_TIMEOUT}, 210 {"write", IO_TIMEOUT}, 211 {"write_filemarks", IO_TIMEOUT}, 212 }; 213 214 typedef enum { 215 SA_PARAM_NONE = 0x000, 216 SA_PARAM_BLOCKSIZE = 0x001, 217 SA_PARAM_DENSITY = 0x002, 218 SA_PARAM_COMPRESSION = 0x004, 219 SA_PARAM_BUFF_MODE = 0x008, 220 SA_PARAM_NUMBLOCKS = 0x010, 221 SA_PARAM_WP = 0x020, 222 SA_PARAM_SPEED = 0x040, 223 SA_PARAM_DENSITY_EXT = 0x080, 224 SA_PARAM_LBP = 0x100, 225 SA_PARAM_ALL = 0x1ff 226 } sa_params; 227 228 typedef enum { 229 SA_QUIRK_NONE = 0x000, 230 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 231 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 232 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 233 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 234 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 235 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 236 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 237 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 238 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 239 } sa_quirks; 240 241 #define SA_QUIRK_BIT_STRING \ 242 "\020" \ 243 "\001NOCOMP" \ 244 "\002FIXED" \ 245 "\003VARIABLE" \ 246 "\0042FM" \ 247 "\0051FM" \ 248 "\006NODREAD" \ 249 "\007NO_MODESEL" \ 250 "\010NO_CPAGE" \ 251 "\011NO_LONG_POS" 252 253 #define SAMODE(z) (dev2unit(z) & 0x3) 254 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 255 256 #define SA_NOT_CTLDEV 0 257 #define SA_CTLDEV 1 258 259 #define SA_ATYPE_R 0 260 #define SA_ATYPE_NR 1 261 #define SA_ATYPE_ER 2 262 #define SA_NUM_ATYPES 3 263 264 #define SAMINOR(ctl, access) \ 265 ((ctl << 4) | (access & 0x3)) 266 267 struct sa_devs { 268 struct cdev *ctl_dev; 269 struct cdev *r_dev; 270 struct cdev *nr_dev; 271 struct cdev *er_dev; 272 }; 273 274 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 275 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 276 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 277 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 278 279 #define SASBADDINT(sb, indent, data, fmt, name) \ 280 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 281 NULL) 282 283 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 284 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 285 desc) 286 287 #define SASBADDUINT(sb, indent, data, fmt, name) \ 288 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 289 NULL) 290 291 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 292 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 293 desc) 294 295 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 296 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 297 NULL) 298 299 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 300 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 301 desc) 302 303 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 304 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 305 306 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 307 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 308 309 #define SASBADDNODE(sb, indent, name) { \ 310 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 311 "node"); \ 312 indent += 2; \ 313 } 314 315 #define SASBADDNODENUM(sb, indent, name, num) { \ 316 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 317 #name, "node", num); \ 318 indent += 2; \ 319 } 320 321 #define SASBENDNODE(sb, indent, name) { \ 322 indent -= 2; \ 323 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 324 } 325 326 #define SA_DENSITY_TYPES 4 327 328 struct sa_prot_state { 329 int initialized; 330 uint32_t prot_method; 331 uint32_t pi_length; 332 uint32_t lbp_w; 333 uint32_t lbp_r; 334 uint32_t rbdp; 335 }; 336 337 struct sa_prot_info { 338 struct sa_prot_state cur_prot_state; 339 struct sa_prot_state pending_prot_state; 340 }; 341 342 /* 343 * A table mapping protection parameters to their types and values. 344 */ 345 struct sa_prot_map { 346 char *name; 347 mt_param_set_type param_type; 348 off_t offset; 349 uint32_t min_val; 350 uint32_t max_val; 351 uint32_t *value; 352 } sa_prot_table[] = { 353 { "prot_method", MT_PARAM_SET_UNSIGNED, 354 __offsetof(struct sa_prot_state, prot_method), 355 /*min_val*/ 0, /*max_val*/ 255, NULL }, 356 { "pi_length", MT_PARAM_SET_UNSIGNED, 357 __offsetof(struct sa_prot_state, pi_length), 358 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 359 { "lbp_w", MT_PARAM_SET_UNSIGNED, 360 __offsetof(struct sa_prot_state, lbp_w), 361 /*min_val*/ 0, /*max_val*/ 1, NULL }, 362 { "lbp_r", MT_PARAM_SET_UNSIGNED, 363 __offsetof(struct sa_prot_state, lbp_r), 364 /*min_val*/ 0, /*max_val*/ 1, NULL }, 365 { "rbdp", MT_PARAM_SET_UNSIGNED, 366 __offsetof(struct sa_prot_state, rbdp), 367 /*min_val*/ 0, /*max_val*/ 1, NULL } 368 }; 369 370 #define SA_NUM_PROT_ENTS nitems(sa_prot_table) 371 372 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 373 && (softc->prot_info.cur_prot_state.initialized != 0) \ 374 && (softc->prot_info.cur_prot_state.prot_method != 0)) 375 376 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 377 378 struct sa_softc { 379 sa_state state; 380 sa_flags flags; 381 sa_quirks quirks; 382 u_int si_flags; 383 struct cam_periph *periph; 384 struct bio_queue_head bio_queue; 385 int queue_count; 386 struct devstat *device_stats; 387 struct sa_devs devs; 388 int open_count; 389 int num_devs_to_destroy; 390 int blk_gran; 391 int blk_mask; 392 int blk_shift; 393 uint32_t max_blk; 394 uint32_t min_blk; 395 uint32_t maxio; 396 uint32_t cpi_maxio; 397 int allow_io_split; 398 int inject_eom; 399 int set_pews_status; 400 uint32_t comp_algorithm; 401 uint32_t saved_comp_algorithm; 402 uint32_t media_blksize; 403 uint32_t last_media_blksize; 404 uint32_t media_numblks; 405 uint8_t media_density; 406 uint8_t speed; 407 uint8_t scsi_rev; 408 uint8_t dsreg; /* mtio mt_dsreg, redux */ 409 int buffer_mode; 410 int filemarks; 411 int last_resid_was_io; 412 uint8_t density_type_bits[SA_DENSITY_TYPES]; 413 int density_info_valid[SA_DENSITY_TYPES]; 414 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 415 int timeout_info[SA_TIMEOUT_TYPE_MAX]; 416 417 struct sa_prot_info prot_info; 418 419 int sili; 420 int eot_warn; 421 422 /* 423 * Current position information. -1 means that the given value is 424 * unknown. fileno and blkno are always calculated. blkno is 425 * relative to the previous file mark. rep_fileno and rep_blkno 426 * are as reported by the drive, if it supports the long form 427 * report for the READ POSITION command. rep_blkno is relative to 428 * the beginning of the partition. 429 * 430 * bop means that the drive is at the beginning of the partition. 431 * eop means that the drive is between early warning and end of 432 * partition, inside the current partition. 433 * bpew means that the position is in a PEWZ (Programmable Early 434 * Warning Zone) 435 */ 436 daddr_t partition; /* Absolute from BOT */ 437 daddr_t fileno; /* Relative to beginning of partition */ 438 daddr_t blkno; /* Relative to last file mark */ 439 daddr_t rep_blkno; /* Relative to beginning of partition */ 440 daddr_t rep_fileno; /* Relative to beginning of partition */ 441 int bop; /* Beginning of Partition */ 442 int eop; /* End of Partition */ 443 int bpew; /* Beyond Programmable Early Warning */ 444 445 /* 446 * Latched Error Info 447 */ 448 struct { 449 struct scsi_sense_data _last_io_sense; 450 uint64_t _last_io_resid; 451 uint8_t _last_io_cdb[CAM_MAX_CDBLEN]; 452 struct scsi_sense_data _last_ctl_sense; 453 uint64_t _last_ctl_resid; 454 uint8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 455 #define last_io_sense errinfo._last_io_sense 456 #define last_io_resid errinfo._last_io_resid 457 #define last_io_cdb errinfo._last_io_cdb 458 #define last_ctl_sense errinfo._last_ctl_sense 459 #define last_ctl_resid errinfo._last_ctl_resid 460 #define last_ctl_cdb errinfo._last_ctl_cdb 461 } errinfo; 462 /* 463 * Misc other flags/state 464 */ 465 uint32_t 466 : 29, 467 open_rdonly : 1, /* open read-only */ 468 open_pending_mount : 1, /* open pending mount */ 469 ctrl_mode : 1; /* control device open */ 470 471 struct task sysctl_task; 472 struct sysctl_ctx_list sysctl_ctx; 473 struct sysctl_oid *sysctl_tree; 474 struct sysctl_ctx_list sysctl_timeout_ctx; 475 struct sysctl_oid *sysctl_timeout_tree; 476 }; 477 478 struct sa_quirk_entry { 479 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 480 sa_quirks quirks; /* specific quirk type */ 481 uint32_t prefblk; /* preferred blocksize when in fixed mode */ 482 }; 483 484 static struct sa_quirk_entry sa_quirk_table[] = 485 { 486 { 487 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 488 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 489 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 490 }, 491 { 492 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 493 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 494 }, 495 { 496 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 497 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 498 }, 499 { 500 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 501 "Python*", "*"}, SA_QUIRK_NODREAD, 0 502 }, 503 { 504 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 505 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 506 }, 507 { 508 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 509 "VIPER 2525 25462", "-011"}, 510 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 511 }, 512 { 513 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 514 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 515 }, 516 #if 0 517 { 518 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 519 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 520 }, 521 #endif 522 { 523 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 524 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 525 }, 526 { 527 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 528 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 529 }, 530 { 531 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 532 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 533 }, 534 { 535 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 536 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 537 }, 538 { 539 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 540 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 541 }, 542 { 543 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 544 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 545 }, 546 { /* jreynold@primenet.com */ 547 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 548 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 549 }, 550 { /* mike@sentex.net */ 551 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 552 "STT20000*", "*"}, SA_QUIRK_1FM, 0 553 }, 554 { 555 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 556 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 557 }, 558 { 559 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 560 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 561 }, 562 { 563 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 564 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 565 }, 566 { 567 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 568 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 569 }, 570 { 571 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 572 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 573 }, 574 { 575 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 576 " SLR*", "*"}, SA_QUIRK_1FM, 0 577 }, 578 { 579 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 580 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 581 }, 582 { 583 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 584 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 585 } 586 }; 587 588 static d_open_t saopen; 589 static d_close_t saclose; 590 static d_strategy_t sastrategy; 591 static d_ioctl_t saioctl; 592 static periph_init_t sainit; 593 static periph_ctor_t saregister; 594 static periph_oninv_t saoninvalidate; 595 static periph_dtor_t sacleanup; 596 static periph_start_t sastart; 597 static void saasync(void *callback_arg, uint32_t code, 598 struct cam_path *path, void *arg); 599 static void sadone(struct cam_periph *periph, 600 union ccb *start_ccb); 601 static int saerror(union ccb *ccb, uint32_t cam_flags, 602 uint32_t sense_flags); 603 static int samarkswanted(struct cam_periph *); 604 static int sacheckeod(struct cam_periph *periph); 605 static int sagetparams(struct cam_periph *periph, 606 sa_params params_to_get, 607 uint32_t *blocksize, uint8_t *density, 608 uint32_t *numblocks, int *buff_mode, 609 uint8_t *write_protect, uint8_t *speed, 610 int *comp_supported, int *comp_enabled, 611 uint32_t *comp_algorithm, 612 sa_comp_t *comp_page, 613 struct scsi_control_data_prot_subpage 614 *prot_page, int dp_size, 615 int prot_changeable); 616 static int sasetprot(struct cam_periph *periph, 617 struct sa_prot_state *new_prot); 618 static int sasetparams(struct cam_periph *periph, 619 sa_params params_to_set, 620 uint32_t blocksize, uint8_t density, 621 uint32_t comp_algorithm, 622 uint32_t sense_flags); 623 static int sasetsili(struct cam_periph *periph, 624 struct mtparamset *ps, int num_params); 625 static int saseteotwarn(struct cam_periph *periph, 626 struct mtparamset *ps, int num_params); 627 static void safillprot(struct sa_softc *softc, int *indent, 628 struct sbuf *sb); 629 static void sapopulateprots(struct sa_prot_state *cur_state, 630 struct sa_prot_map *new_table, 631 int table_ents); 632 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 633 int table_ents); 634 static int sasetprotents(struct cam_periph *periph, 635 struct mtparamset *ps, int num_params); 636 static struct sa_param_ent *safindparament(struct mtparamset *ps); 637 static int saparamsetlist(struct cam_periph *periph, 638 struct mtsetlist *list, int need_copy); 639 static int saextget(struct cdev *dev, struct cam_periph *periph, 640 struct sbuf *sb, struct mtextget *g); 641 static int saparamget(struct sa_softc *softc, struct sbuf *sb); 642 static void saprevent(struct cam_periph *periph, int action); 643 static int sarewind(struct cam_periph *periph); 644 static int saspace(struct cam_periph *periph, int count, 645 scsi_space_code code); 646 static void sadevgonecb(void *arg); 647 static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 648 static void saloadtotunables(struct sa_softc *softc); 649 static void sasysctlinit(void *context, int pending); 650 static int samount(struct cam_periph *, int, struct cdev *); 651 static int saretension(struct cam_periph *periph); 652 static int sareservereleaseunit(struct cam_periph *periph, 653 int reserve); 654 static int saloadunload(struct cam_periph *periph, int load); 655 static int saerase(struct cam_periph *periph, int longerase); 656 static int sawritefilemarks(struct cam_periph *periph, 657 int nmarks, int setmarks, int immed); 658 static int sagetpos(struct cam_periph *periph); 659 static int sardpos(struct cam_periph *periph, int, uint32_t *); 660 static int sasetpos(struct cam_periph *periph, int, 661 struct mtlocate *); 662 static void safilldenstypesb(struct sbuf *sb, int *indent, 663 uint8_t *buf, int buf_len, 664 int is_density); 665 static void safilldensitysb(struct sa_softc *softc, int *indent, 666 struct sbuf *sb); 667 static void saloadtimeouts(struct sa_softc *softc, union ccb *ccb); 668 669 #ifndef SA_DEFAULT_IO_SPLIT 670 #define SA_DEFAULT_IO_SPLIT 0 671 #endif 672 673 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 674 675 /* 676 * Tunable to allow the user to set a global allow_io_split value. Note 677 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 678 * is bad behavior, because it hides the true tape block size from the 679 * application. 680 */ 681 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 682 "CAM Sequential Access Tape Driver"); 683 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 684 &sa_allow_io_split, 0, "Default I/O split value"); 685 686 static struct periph_driver sadriver = 687 { 688 sainit, "sa", 689 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 690 }; 691 692 PERIPHDRIVER_DECLARE(sa, sadriver); 693 694 /* For 2.2-stable support */ 695 #ifndef D_TAPE 696 #define D_TAPE 0 697 #endif 698 699 static struct cdevsw sa_cdevsw = { 700 .d_version = D_VERSION, 701 .d_open = saopen, 702 .d_close = saclose, 703 .d_read = physread, 704 .d_write = physwrite, 705 .d_ioctl = saioctl, 706 .d_strategy = sastrategy, 707 .d_name = "sa", 708 .d_flags = D_TAPE | D_TRACKCLOSE, 709 }; 710 711 static int 712 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 713 { 714 struct cam_periph *periph; 715 struct sa_softc *softc; 716 int error; 717 718 periph = (struct cam_periph *)dev->si_drv1; 719 if (cam_periph_acquire(periph) != 0) { 720 return (ENXIO); 721 } 722 723 cam_periph_lock(periph); 724 725 softc = (struct sa_softc *)periph->softc; 726 727 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 728 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 729 730 if (SA_IS_CTRL(dev)) { 731 softc->ctrl_mode = 1; 732 softc->open_count++; 733 cam_periph_unlock(periph); 734 return (0); 735 } 736 737 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 738 cam_periph_unlock(periph); 739 cam_periph_release(periph); 740 return (error); 741 } 742 743 if (softc->flags & SA_FLAG_OPEN) { 744 error = EBUSY; 745 } else if (softc->flags & SA_FLAG_INVALID) { 746 error = ENXIO; 747 } else { 748 /* 749 * Preserve whether this is a read_only open. 750 */ 751 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 752 753 /* 754 * The function samount ensures media is loaded and ready. 755 * It also does a device RESERVE if the tape isn't yet mounted. 756 * 757 * If the mount fails and this was a non-blocking open, 758 * make this a 'open_pending_mount' action. 759 */ 760 error = samount(periph, flags, dev); 761 if (error && (flags & O_NONBLOCK)) { 762 softc->flags |= SA_FLAG_OPEN; 763 softc->open_pending_mount = 1; 764 softc->open_count++; 765 cam_periph_unhold(periph); 766 cam_periph_unlock(periph); 767 return (0); 768 } 769 } 770 771 if (error) { 772 cam_periph_unhold(periph); 773 cam_periph_unlock(periph); 774 cam_periph_release(periph); 775 return (error); 776 } 777 778 saprevent(periph, PR_PREVENT); 779 softc->flags |= SA_FLAG_OPEN; 780 softc->open_count++; 781 782 cam_periph_unhold(periph); 783 cam_periph_unlock(periph); 784 return (error); 785 } 786 787 static int 788 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 789 { 790 struct cam_periph *periph; 791 struct sa_softc *softc; 792 int mode, error, writing, tmp, i; 793 int closedbits = SA_FLAG_OPEN; 794 795 mode = SAMODE(dev); 796 periph = (struct cam_periph *)dev->si_drv1; 797 cam_periph_lock(periph); 798 799 softc = (struct sa_softc *)periph->softc; 800 801 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 802 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 803 804 softc->open_rdonly = 0; 805 if (SA_IS_CTRL(dev)) { 806 softc->ctrl_mode = 0; 807 softc->open_count--; 808 cam_periph_unlock(periph); 809 cam_periph_release(periph); 810 return (0); 811 } 812 813 if (softc->open_pending_mount) { 814 softc->flags &= ~SA_FLAG_OPEN; 815 softc->open_pending_mount = 0; 816 softc->open_count--; 817 cam_periph_unlock(periph); 818 cam_periph_release(periph); 819 return (0); 820 } 821 822 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 823 cam_periph_unlock(periph); 824 return (error); 825 } 826 827 /* 828 * Were we writing the tape? 829 */ 830 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 831 832 /* 833 * See whether or not we need to write filemarks. If this 834 * fails, we probably have to assume we've lost tape 835 * position. 836 */ 837 error = sacheckeod(periph); 838 if (error) { 839 xpt_print(periph->path, 840 "failed to write terminating filemark(s)\n"); 841 softc->flags |= SA_FLAG_TAPE_FROZEN; 842 } 843 844 /* 845 * Whatever we end up doing, allow users to eject tapes from here on. 846 */ 847 saprevent(periph, PR_ALLOW); 848 849 /* 850 * Decide how to end... 851 */ 852 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 853 closedbits |= SA_FLAG_TAPE_FROZEN; 854 } else switch (mode) { 855 case SA_MODE_OFFLINE: 856 /* 857 * An 'offline' close is an unconditional release of 858 * frozen && mount conditions, irrespective of whether 859 * these operations succeeded. The reason for this is 860 * to allow at least some kind of programmatic way 861 * around our state getting all fouled up. If somebody 862 * issues an 'offline' command, that will be allowed 863 * to clear state. 864 */ 865 (void) sarewind(periph); 866 (void) saloadunload(periph, FALSE); 867 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 868 break; 869 case SA_MODE_REWIND: 870 /* 871 * If the rewind fails, return an error- if anyone cares, 872 * but not overwriting any previous error. 873 * 874 * We don't clear the notion of mounted here, but we do 875 * clear the notion of frozen if we successfully rewound. 876 */ 877 tmp = sarewind(periph); 878 if (tmp) { 879 if (error != 0) 880 error = tmp; 881 } else { 882 closedbits |= SA_FLAG_TAPE_FROZEN; 883 } 884 break; 885 case SA_MODE_NOREWIND: 886 /* 887 * If we're not rewinding/unloading the tape, find out 888 * whether we need to back up over one of two filemarks 889 * we wrote (if we wrote two filemarks) so that appends 890 * from this point on will be sane. 891 */ 892 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 893 tmp = saspace(periph, -1, SS_FILEMARKS); 894 if (tmp) { 895 xpt_print(periph->path, "unable to backspace " 896 "over one of double filemarks at end of " 897 "tape\n"); 898 xpt_print(periph->path, "it is possible that " 899 "this device needs a SA_QUIRK_1FM quirk set" 900 "for it\n"); 901 softc->flags |= SA_FLAG_TAPE_FROZEN; 902 } 903 } 904 break; 905 default: 906 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 907 /* NOTREACHED */ 908 break; 909 } 910 911 /* 912 * We wish to note here that there are no more filemarks to be written. 913 */ 914 softc->filemarks = 0; 915 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 916 917 /* 918 * And we are no longer open for business. 919 */ 920 softc->flags &= ~closedbits; 921 softc->open_count--; 922 923 /* 924 * Invalidate any density information that depends on having tape 925 * media in the drive. 926 */ 927 for (i = 0; i < SA_DENSITY_TYPES; i++) { 928 if (softc->density_type_bits[i] & SRDS_MEDIA) 929 softc->density_info_valid[i] = 0; 930 } 931 932 /* 933 * Inform users if tape state if frozen.... 934 */ 935 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 936 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 937 "REWIND or MTEOM command to clear this state.\n"); 938 } 939 940 /* release the device if it is no longer mounted */ 941 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 942 sareservereleaseunit(periph, FALSE); 943 944 cam_periph_unhold(periph); 945 cam_periph_unlock(periph); 946 cam_periph_release(periph); 947 948 return (error); 949 } 950 951 /* 952 * Actually translate the requested transfer into one the physical driver 953 * can understand. The transfer is described by a buf and will include 954 * only one physical transfer. 955 */ 956 static void 957 sastrategy(struct bio *bp) 958 { 959 struct cam_periph *periph; 960 struct sa_softc *softc; 961 962 bp->bio_resid = bp->bio_bcount; 963 if (SA_IS_CTRL(bp->bio_dev)) { 964 biofinish(bp, NULL, EINVAL); 965 return; 966 } 967 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 968 cam_periph_lock(periph); 969 970 softc = (struct sa_softc *)periph->softc; 971 972 if (softc->flags & SA_FLAG_INVALID) { 973 cam_periph_unlock(periph); 974 biofinish(bp, NULL, ENXIO); 975 return; 976 } 977 978 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 979 cam_periph_unlock(periph); 980 biofinish(bp, NULL, EPERM); 981 return; 982 } 983 984 /* 985 * This should actually never occur as the write(2) 986 * system call traps attempts to write to a read-only 987 * file descriptor. 988 */ 989 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 990 cam_periph_unlock(periph); 991 biofinish(bp, NULL, EBADF); 992 return; 993 } 994 995 if (softc->open_pending_mount) { 996 int error = samount(periph, 0, bp->bio_dev); 997 if (error) { 998 cam_periph_unlock(periph); 999 biofinish(bp, NULL, ENXIO); 1000 return; 1001 } 1002 saprevent(periph, PR_PREVENT); 1003 softc->open_pending_mount = 0; 1004 } 1005 1006 /* 1007 * If it's a null transfer, return immediately 1008 */ 1009 if (bp->bio_bcount == 0) { 1010 cam_periph_unlock(periph); 1011 biodone(bp); 1012 return; 1013 } 1014 1015 /* valid request? */ 1016 if (softc->flags & SA_FLAG_FIXED) { 1017 /* 1018 * Fixed block device. The byte count must 1019 * be a multiple of our block size. 1020 */ 1021 if (((softc->blk_mask != ~0) && 1022 ((bp->bio_bcount & softc->blk_mask) != 0)) || 1023 ((softc->blk_mask == ~0) && 1024 ((bp->bio_bcount % softc->min_blk) != 0))) { 1025 xpt_print(periph->path, "Invalid request. Fixed block " 1026 "device requests must be a multiple of %d bytes\n", 1027 softc->min_blk); 1028 cam_periph_unlock(periph); 1029 biofinish(bp, NULL, EINVAL); 1030 return; 1031 } 1032 } else if ((bp->bio_bcount > softc->max_blk) || 1033 (bp->bio_bcount < softc->min_blk) || 1034 (bp->bio_bcount & softc->blk_mask) != 0) { 1035 xpt_print_path(periph->path); 1036 printf("Invalid request. Variable block " 1037 "device requests must be "); 1038 if (softc->blk_mask != 0) { 1039 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 1040 } 1041 printf("between %d and %d bytes\n", softc->min_blk, 1042 softc->max_blk); 1043 cam_periph_unlock(periph); 1044 biofinish(bp, NULL, EINVAL); 1045 return; 1046 } 1047 1048 /* 1049 * Place it at the end of the queue. 1050 */ 1051 bioq_insert_tail(&softc->bio_queue, bp); 1052 softc->queue_count++; 1053 #if 0 1054 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1055 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 1056 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 1057 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1058 #endif 1059 if (softc->queue_count > 1) { 1060 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1061 ("sastrategy: queue count now %d\n", softc->queue_count)); 1062 } 1063 1064 /* 1065 * Schedule ourselves for performing the work. 1066 */ 1067 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1068 cam_periph_unlock(periph); 1069 1070 return; 1071 } 1072 1073 static int 1074 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1075 { 1076 uint32_t sili_blocksize; 1077 struct sa_softc *softc; 1078 int error; 1079 1080 error = 0; 1081 softc = (struct sa_softc *)periph->softc; 1082 1083 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1084 snprintf(ps->error_str, sizeof(ps->error_str), 1085 "sili is a signed parameter"); 1086 goto bailout; 1087 } 1088 if ((ps->value.value_signed < 0) 1089 || (ps->value.value_signed > 1)) { 1090 snprintf(ps->error_str, sizeof(ps->error_str), 1091 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1092 goto bailout_error; 1093 } 1094 /* 1095 * We only set the SILI flag in variable block 1096 * mode. You'll get a check condition in fixed 1097 * block mode if things don't line up in any case. 1098 */ 1099 if (softc->flags & SA_FLAG_FIXED) { 1100 snprintf(ps->error_str, sizeof(ps->error_str), 1101 "can't set sili bit in fixed block mode"); 1102 goto bailout_error; 1103 } 1104 if (softc->sili == ps->value.value_signed) 1105 goto bailout; 1106 1107 if (ps->value.value_signed == 1) 1108 sili_blocksize = 4; 1109 else 1110 sili_blocksize = 0; 1111 1112 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1113 sili_blocksize, 0, 0, SF_QUIET_IR); 1114 if (error != 0) { 1115 snprintf(ps->error_str, sizeof(ps->error_str), 1116 "sasetparams() returned error %d", error); 1117 goto bailout_error; 1118 } 1119 1120 softc->sili = ps->value.value_signed; 1121 1122 bailout: 1123 ps->status = MT_PARAM_STATUS_OK; 1124 return (error); 1125 1126 bailout_error: 1127 ps->status = MT_PARAM_STATUS_ERROR; 1128 if (error == 0) 1129 error = EINVAL; 1130 1131 return (error); 1132 } 1133 1134 static int 1135 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1136 { 1137 struct sa_softc *softc; 1138 int error; 1139 1140 error = 0; 1141 softc = (struct sa_softc *)periph->softc; 1142 1143 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1144 snprintf(ps->error_str, sizeof(ps->error_str), 1145 "eot_warn is a signed parameter"); 1146 ps->status = MT_PARAM_STATUS_ERROR; 1147 goto bailout; 1148 } 1149 if ((ps->value.value_signed < 0) 1150 || (ps->value.value_signed > 1)) { 1151 snprintf(ps->error_str, sizeof(ps->error_str), 1152 "invalid eot_warn value %jd\n", 1153 (intmax_t)ps->value.value_signed); 1154 ps->status = MT_PARAM_STATUS_ERROR; 1155 goto bailout; 1156 } 1157 softc->eot_warn = ps->value.value_signed; 1158 ps->status = MT_PARAM_STATUS_OK; 1159 bailout: 1160 if (ps->status != MT_PARAM_STATUS_OK) 1161 error = EINVAL; 1162 1163 return (error); 1164 } 1165 1166 static void 1167 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1168 { 1169 int tmpint; 1170 1171 SASBADDNODE(sb, *indent, protection); 1172 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1173 tmpint = 1; 1174 else 1175 tmpint = 0; 1176 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1177 "Set to 1 if protection information is supported"); 1178 1179 if ((tmpint != 0) 1180 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1181 struct sa_prot_state *prot; 1182 1183 prot = &softc->prot_info.cur_prot_state; 1184 1185 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1186 prot_method, "Current Protection Method"); 1187 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1188 pi_length, "Length of Protection Information"); 1189 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1190 lbp_w, "Check Protection on Writes"); 1191 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1192 lbp_r, "Check and Include Protection on Reads"); 1193 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1194 rbdp, "Transfer Protection Information for RECOVER " 1195 "BUFFERED DATA command"); 1196 } 1197 SASBENDNODE(sb, *indent, protection); 1198 } 1199 1200 static void 1201 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1202 int table_ents) 1203 { 1204 int i; 1205 1206 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1207 sizeof(sa_prot_table))); 1208 1209 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1210 1211 for (i = 0; i < table_ents; i++) 1212 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1213 new_table[i].offset); 1214 1215 return; 1216 } 1217 1218 static struct sa_prot_map * 1219 safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1220 { 1221 char *prot_name = "protection."; 1222 int i, prot_len; 1223 1224 prot_len = strlen(prot_name); 1225 1226 /* 1227 * This shouldn't happen, but we check just in case. 1228 */ 1229 if (strncmp(name, prot_name, prot_len) != 0) 1230 goto bailout; 1231 1232 for (i = 0; i < table_ents; i++) { 1233 if (strcmp(&name[prot_len], table[i].name) != 0) 1234 continue; 1235 return (&table[i]); 1236 } 1237 bailout: 1238 return (NULL); 1239 } 1240 1241 static int 1242 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1243 { 1244 struct sa_softc *softc; 1245 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1246 struct sa_prot_state new_state; 1247 int error; 1248 int i; 1249 1250 softc = (struct sa_softc *)periph->softc; 1251 error = 0; 1252 1253 /* 1254 * Make sure that this tape drive supports protection information. 1255 * Otherwise we can't set anything. 1256 */ 1257 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1258 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1259 "Protection information is not supported for this device"); 1260 ps[0].status = MT_PARAM_STATUS_ERROR; 1261 goto bailout; 1262 } 1263 1264 /* 1265 * We can't operate with physio(9) splitting enabled, because there 1266 * is no way to insure (especially in variable block mode) that 1267 * what the user writes (with a checksum block at the end) will 1268 * make it into the sa(4) driver intact. 1269 */ 1270 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1271 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1272 "Protection information cannot be enabled with I/O " 1273 "splitting"); 1274 ps[0].status = MT_PARAM_STATUS_ERROR; 1275 goto bailout; 1276 } 1277 1278 /* 1279 * Take the current cached protection state and use that as the 1280 * basis for our new entries. 1281 */ 1282 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1283 1284 /* 1285 * Populate the table mapping property names to pointers into the 1286 * state structure. 1287 */ 1288 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1289 1290 /* 1291 * For each parameter the user passed in, make sure the name, type 1292 * and value are valid. 1293 */ 1294 for (i = 0; i < num_params; i++) { 1295 struct sa_prot_map *ent; 1296 1297 ent = safindprotent(ps[i].value_name, prot_ents, 1298 SA_NUM_PROT_ENTS); 1299 if (ent == NULL) { 1300 ps[i].status = MT_PARAM_STATUS_ERROR; 1301 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1302 "Invalid protection entry name %s", 1303 ps[i].value_name); 1304 error = EINVAL; 1305 goto bailout; 1306 } 1307 if (ent->param_type != ps[i].value_type) { 1308 ps[i].status = MT_PARAM_STATUS_ERROR; 1309 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1310 "Supplied type %d does not match actual type %d", 1311 ps[i].value_type, ent->param_type); 1312 error = EINVAL; 1313 goto bailout; 1314 } 1315 if ((ps[i].value.value_unsigned < ent->min_val) 1316 || (ps[i].value.value_unsigned > ent->max_val)) { 1317 ps[i].status = MT_PARAM_STATUS_ERROR; 1318 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1319 "Value %ju is outside valid range %u - %u", 1320 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1321 ent->max_val); 1322 error = EINVAL; 1323 goto bailout; 1324 } 1325 *(ent->value) = ps[i].value.value_unsigned; 1326 } 1327 1328 /* 1329 * Actually send the protection settings to the drive. 1330 */ 1331 error = sasetprot(periph, &new_state); 1332 if (error != 0) { 1333 for (i = 0; i < num_params; i++) { 1334 ps[i].status = MT_PARAM_STATUS_ERROR; 1335 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1336 "Unable to set parameter, see dmesg(8)"); 1337 } 1338 goto bailout; 1339 } 1340 1341 /* 1342 * Let the user know that his settings were stored successfully. 1343 */ 1344 for (i = 0; i < num_params; i++) 1345 ps[i].status = MT_PARAM_STATUS_OK; 1346 1347 bailout: 1348 return (error); 1349 } 1350 /* 1351 * Entry handlers generally only handle a single entry. Node handlers will 1352 * handle a contiguous range of parameters to set in a single call. 1353 */ 1354 typedef enum { 1355 SA_PARAM_TYPE_ENTRY, 1356 SA_PARAM_TYPE_NODE 1357 } sa_param_type; 1358 1359 struct sa_param_ent { 1360 char *name; 1361 sa_param_type param_type; 1362 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1363 int num_params); 1364 } sa_param_table[] = { 1365 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1366 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1367 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1368 }; 1369 1370 static struct sa_param_ent * 1371 safindparament(struct mtparamset *ps) 1372 { 1373 unsigned int i; 1374 1375 for (i = 0; i < nitems(sa_param_table); i++){ 1376 /* 1377 * For entries, we compare all of the characters. For 1378 * nodes, we only compare the first N characters. The node 1379 * handler will decode the rest. 1380 */ 1381 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1382 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1383 continue; 1384 } else { 1385 if (strncmp(ps->value_name, sa_param_table[i].name, 1386 strlen(sa_param_table[i].name)) != 0) 1387 continue; 1388 } 1389 return (&sa_param_table[i]); 1390 } 1391 1392 return (NULL); 1393 } 1394 1395 /* 1396 * Go through a list of parameters, coalescing contiguous parameters with 1397 * the same parent node into a single call to a set_func. 1398 */ 1399 static int 1400 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1401 int need_copy) 1402 { 1403 int i, contig_ents; 1404 int error; 1405 struct mtparamset *params, *first; 1406 struct sa_param_ent *first_ent; 1407 1408 error = 0; 1409 params = NULL; 1410 1411 if (list->num_params == 0) 1412 /* Nothing to do */ 1413 goto bailout; 1414 1415 /* 1416 * Verify that the user has the correct structure size. 1417 */ 1418 if ((list->num_params * sizeof(struct mtparamset)) != 1419 list->param_len) { 1420 xpt_print(periph->path, "%s: length of params %d != " 1421 "sizeof(struct mtparamset) %zd * num_params %d\n", 1422 __func__, list->param_len, sizeof(struct mtparamset), 1423 list->num_params); 1424 error = EINVAL; 1425 goto bailout; 1426 } 1427 1428 if (need_copy != 0) { 1429 /* 1430 * XXX KDM will dropping the lock cause an issue here? 1431 */ 1432 cam_periph_unlock(periph); 1433 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1434 error = copyin(list->params, params, list->param_len); 1435 cam_periph_lock(periph); 1436 1437 if (error != 0) 1438 goto bailout; 1439 } else { 1440 params = list->params; 1441 } 1442 1443 contig_ents = 0; 1444 first = NULL; 1445 first_ent = NULL; 1446 for (i = 0; i < list->num_params; i++) { 1447 struct sa_param_ent *ent; 1448 1449 ent = safindparament(¶ms[i]); 1450 if (ent == NULL) { 1451 snprintf(params[i].error_str, 1452 sizeof(params[i].error_str), 1453 "%s: cannot find parameter %s", __func__, 1454 params[i].value_name); 1455 params[i].status = MT_PARAM_STATUS_ERROR; 1456 break; 1457 } 1458 1459 if (first != NULL) { 1460 if (first_ent == ent) { 1461 /* 1462 * We're still in a contiguous list of 1463 * parameters that can be handled by one 1464 * node handler. 1465 */ 1466 contig_ents++; 1467 continue; 1468 } else { 1469 error = first_ent->set_func(periph, first, 1470 contig_ents); 1471 first = NULL; 1472 first_ent = NULL; 1473 contig_ents = 0; 1474 if (error != 0) { 1475 error = 0; 1476 break; 1477 } 1478 } 1479 } 1480 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1481 first = ¶ms[i]; 1482 first_ent = ent; 1483 contig_ents = 1; 1484 } else { 1485 error = ent->set_func(periph, ¶ms[i], 1); 1486 if (error != 0) { 1487 error = 0; 1488 break; 1489 } 1490 } 1491 } 1492 if (first != NULL) 1493 first_ent->set_func(periph, first, contig_ents); 1494 1495 bailout: 1496 if (need_copy != 0) { 1497 if (error != EFAULT) { 1498 cam_periph_unlock(periph); 1499 copyout(params, list->params, list->param_len); 1500 cam_periph_lock(periph); 1501 } 1502 free(params, M_SCSISA); 1503 } 1504 return (error); 1505 } 1506 1507 static int 1508 sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1509 { 1510 struct sa_softc *softc; 1511 uint8_t write_protect; 1512 int comp_enabled, comp_supported, error; 1513 1514 softc = (struct sa_softc *)periph->softc; 1515 1516 if (softc->open_pending_mount) 1517 return (0); 1518 1519 /* The control device may issue getparams() if there are no opens. */ 1520 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1521 return (0); 1522 1523 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1524 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1525 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1526 &softc->comp_algorithm, NULL, NULL, 0, 0); 1527 if (error) 1528 return (error); 1529 if (write_protect) 1530 softc->flags |= SA_FLAG_TAPE_WP; 1531 else 1532 softc->flags &= ~SA_FLAG_TAPE_WP; 1533 softc->flags &= ~SA_FLAG_COMPRESSION; 1534 if (comp_supported) { 1535 if (softc->saved_comp_algorithm == 0) 1536 softc->saved_comp_algorithm = 1537 softc->comp_algorithm; 1538 softc->flags |= SA_FLAG_COMP_SUPP; 1539 if (comp_enabled) 1540 softc->flags |= SA_FLAG_COMP_ENABLED; 1541 } else 1542 softc->flags |= SA_FLAG_COMP_UNSUPP; 1543 1544 return (0); 1545 } 1546 1547 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1548 if (softc->open_pending_mount) { \ 1549 error = samount(periph, 0, dev); \ 1550 if (error) { \ 1551 break; \ 1552 } \ 1553 saprevent(periph, PR_PREVENT); \ 1554 softc->open_pending_mount = 0; \ 1555 } 1556 1557 static int 1558 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1559 { 1560 struct cam_periph *periph; 1561 struct sa_softc *softc; 1562 scsi_space_code spaceop; 1563 int didlockperiph = 0; 1564 int mode; 1565 int error = 0; 1566 1567 mode = SAMODE(dev); 1568 error = 0; /* shut up gcc */ 1569 spaceop = 0; /* shut up gcc */ 1570 1571 periph = (struct cam_periph *)dev->si_drv1; 1572 cam_periph_lock(periph); 1573 softc = (struct sa_softc *)periph->softc; 1574 1575 /* 1576 * Check for control mode accesses. We allow MTIOCGET and 1577 * MTIOCERRSTAT (but need to be the only one open in order 1578 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1579 * and MTCOMP (but need to be the only one accessing this 1580 * device to run those). 1581 */ 1582 1583 if (SA_IS_CTRL(dev)) { 1584 switch (cmd) { 1585 case MTIOCGETEOTMODEL: 1586 case MTIOCGET: 1587 case MTIOCEXTGET: 1588 case MTIOCPARAMGET: 1589 case MTIOCRBLIM: 1590 break; 1591 case MTIOCERRSTAT: 1592 /* 1593 * If the periph isn't already locked, lock it 1594 * so our MTIOCERRSTAT can reset latched error stats. 1595 * 1596 * If the periph is already locked, skip it because 1597 * we're just getting status and it'll be up to the 1598 * other thread that has this device open to do 1599 * an MTIOCERRSTAT that would clear latched status. 1600 */ 1601 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1602 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1603 if (error != 0) { 1604 cam_periph_unlock(periph); 1605 return (error); 1606 } 1607 didlockperiph = 1; 1608 } 1609 break; 1610 1611 case MTIOCTOP: 1612 { 1613 struct mtop *mt = (struct mtop *) arg; 1614 1615 /* 1616 * Check to make sure it's an OP we can perform 1617 * with no media inserted. 1618 */ 1619 switch (mt->mt_op) { 1620 case MTSETBSIZ: 1621 case MTSETDNSTY: 1622 case MTCOMP: 1623 mt = NULL; 1624 /* FALLTHROUGH */ 1625 default: 1626 break; 1627 } 1628 if (mt != NULL) { 1629 break; 1630 } 1631 /* FALLTHROUGH */ 1632 } 1633 case MTIOCSETEOTMODEL: 1634 /* 1635 * We need to acquire the peripheral here rather 1636 * than at open time because we are sharing writable 1637 * access to data structures. 1638 */ 1639 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1640 if (error != 0) { 1641 cam_periph_unlock(periph); 1642 return (error); 1643 } 1644 didlockperiph = 1; 1645 break; 1646 1647 default: 1648 cam_periph_unlock(periph); 1649 return (EINVAL); 1650 } 1651 } 1652 1653 /* 1654 * Find the device that the user is talking about 1655 */ 1656 switch (cmd) { 1657 case MTIOCGET: 1658 { 1659 struct mtget *g = (struct mtget *)arg; 1660 1661 error = sagetparams_common(dev, periph); 1662 if (error) 1663 break; 1664 bzero(g, sizeof(struct mtget)); 1665 g->mt_type = MT_ISAR; 1666 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1667 g->mt_comp = MT_COMP_UNSUPP; 1668 g->mt_comp0 = MT_COMP_UNSUPP; 1669 g->mt_comp1 = MT_COMP_UNSUPP; 1670 g->mt_comp2 = MT_COMP_UNSUPP; 1671 g->mt_comp3 = MT_COMP_UNSUPP; 1672 } else { 1673 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1674 g->mt_comp = MT_COMP_DISABLED; 1675 } else { 1676 g->mt_comp = softc->comp_algorithm; 1677 } 1678 g->mt_comp0 = softc->comp_algorithm; 1679 g->mt_comp1 = softc->comp_algorithm; 1680 g->mt_comp2 = softc->comp_algorithm; 1681 g->mt_comp3 = softc->comp_algorithm; 1682 } 1683 g->mt_density = softc->media_density; 1684 g->mt_density0 = softc->media_density; 1685 g->mt_density1 = softc->media_density; 1686 g->mt_density2 = softc->media_density; 1687 g->mt_density3 = softc->media_density; 1688 g->mt_blksiz = softc->media_blksize; 1689 g->mt_blksiz0 = softc->media_blksize; 1690 g->mt_blksiz1 = softc->media_blksize; 1691 g->mt_blksiz2 = softc->media_blksize; 1692 g->mt_blksiz3 = softc->media_blksize; 1693 g->mt_fileno = softc->fileno; 1694 g->mt_blkno = softc->blkno; 1695 g->mt_dsreg = (short) softc->dsreg; 1696 /* 1697 * Yes, we know that this is likely to overflow 1698 */ 1699 if (softc->last_resid_was_io) { 1700 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1701 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1702 softc->last_io_resid = 0; 1703 } 1704 } 1705 } else { 1706 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1707 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1708 softc->last_ctl_resid = 0; 1709 } 1710 } 1711 } 1712 error = 0; 1713 break; 1714 } 1715 case MTIOCEXTGET: 1716 case MTIOCPARAMGET: 1717 { 1718 struct mtextget *g = (struct mtextget *)arg; 1719 char *tmpstr2; 1720 struct sbuf *sb; 1721 1722 /* 1723 * Report drive status using an XML format. 1724 */ 1725 1726 /* 1727 * XXX KDM will dropping the lock cause any problems here? 1728 */ 1729 cam_periph_unlock(periph); 1730 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1731 if (sb == NULL) { 1732 g->status = MT_EXT_GET_ERROR; 1733 snprintf(g->error_str, sizeof(g->error_str), 1734 "Unable to allocate %d bytes for status info", 1735 g->alloc_len); 1736 cam_periph_lock(periph); 1737 goto extget_bailout; 1738 } 1739 cam_periph_lock(periph); 1740 1741 if (cmd == MTIOCEXTGET) 1742 error = saextget(dev, periph, sb, g); 1743 else 1744 error = saparamget(softc, sb); 1745 1746 if (error != 0) 1747 goto extget_bailout; 1748 1749 error = sbuf_finish(sb); 1750 if (error == ENOMEM) { 1751 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1752 error = 0; 1753 } else if (error != 0) { 1754 g->status = MT_EXT_GET_ERROR; 1755 snprintf(g->error_str, sizeof(g->error_str), 1756 "Error %d returned from sbuf_finish()", error); 1757 } else 1758 g->status = MT_EXT_GET_OK; 1759 1760 error = 0; 1761 tmpstr2 = sbuf_data(sb); 1762 g->fill_len = strlen(tmpstr2) + 1; 1763 cam_periph_unlock(periph); 1764 1765 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1766 1767 cam_periph_lock(periph); 1768 1769 extget_bailout: 1770 sbuf_delete(sb); 1771 break; 1772 } 1773 case MTIOCPARAMSET: 1774 { 1775 struct mtsetlist list; 1776 struct mtparamset *ps = (struct mtparamset *)arg; 1777 1778 bzero(&list, sizeof(list)); 1779 list.num_params = 1; 1780 list.param_len = sizeof(*ps); 1781 list.params = ps; 1782 1783 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1784 break; 1785 } 1786 case MTIOCSETLIST: 1787 { 1788 struct mtsetlist *list = (struct mtsetlist *)arg; 1789 1790 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1791 break; 1792 } 1793 case MTIOCERRSTAT: 1794 { 1795 struct scsi_tape_errors *sep = 1796 &((union mterrstat *)arg)->scsi_errstat; 1797 1798 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1799 ("saioctl: MTIOCERRSTAT\n")); 1800 1801 bzero(sep, sizeof(*sep)); 1802 sep->io_resid = softc->last_io_resid; 1803 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1804 sizeof (sep->io_sense)); 1805 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1806 sizeof (sep->io_cdb)); 1807 sep->ctl_resid = softc->last_ctl_resid; 1808 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1809 sizeof (sep->ctl_sense)); 1810 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1811 sizeof (sep->ctl_cdb)); 1812 1813 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1814 didlockperiph) 1815 bzero((caddr_t) &softc->errinfo, 1816 sizeof (softc->errinfo)); 1817 error = 0; 1818 break; 1819 } 1820 case MTIOCTOP: 1821 { 1822 struct mtop *mt; 1823 int count; 1824 1825 PENDING_MOUNT_CHECK(softc, periph, dev); 1826 1827 mt = (struct mtop *)arg; 1828 1829 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1830 ("saioctl: op=0x%x count=0x%x\n", 1831 mt->mt_op, mt->mt_count)); 1832 1833 count = mt->mt_count; 1834 switch (mt->mt_op) { 1835 case MTWEOF: /* write an end-of-file marker */ 1836 /* 1837 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1838 * flag because by keeping track of filemarks 1839 * we have last written we know whether or not 1840 * we need to write more when we close the device. 1841 */ 1842 error = sawritefilemarks(periph, count, FALSE, FALSE); 1843 break; 1844 case MTWEOFI: 1845 /* write an end-of-file marker without waiting */ 1846 error = sawritefilemarks(periph, count, FALSE, TRUE); 1847 break; 1848 case MTWSS: /* write a setmark */ 1849 error = sawritefilemarks(periph, count, TRUE, FALSE); 1850 break; 1851 case MTBSR: /* backward space record */ 1852 case MTFSR: /* forward space record */ 1853 case MTBSF: /* backward space file */ 1854 case MTFSF: /* forward space file */ 1855 case MTBSS: /* backward space setmark */ 1856 case MTFSS: /* forward space setmark */ 1857 case MTEOD: /* space to end of recorded medium */ 1858 { 1859 int nmarks; 1860 1861 spaceop = SS_FILEMARKS; 1862 nmarks = softc->filemarks; 1863 error = sacheckeod(periph); 1864 if (error) { 1865 xpt_print(periph->path, 1866 "EOD check prior to spacing failed\n"); 1867 softc->flags |= SA_FLAG_EIO_PENDING; 1868 break; 1869 } 1870 nmarks -= softc->filemarks; 1871 switch(mt->mt_op) { 1872 case MTBSR: 1873 count = -count; 1874 /* FALLTHROUGH */ 1875 case MTFSR: 1876 spaceop = SS_BLOCKS; 1877 break; 1878 case MTBSF: 1879 count = -count; 1880 /* FALLTHROUGH */ 1881 case MTFSF: 1882 break; 1883 case MTBSS: 1884 count = -count; 1885 /* FALLTHROUGH */ 1886 case MTFSS: 1887 spaceop = SS_SETMARKS; 1888 break; 1889 case MTEOD: 1890 spaceop = SS_EOD; 1891 count = 0; 1892 nmarks = 0; 1893 break; 1894 default: 1895 error = EINVAL; 1896 break; 1897 } 1898 if (error) 1899 break; 1900 1901 nmarks = softc->filemarks; 1902 /* 1903 * XXX: Why are we checking again? 1904 */ 1905 error = sacheckeod(periph); 1906 if (error) 1907 break; 1908 nmarks -= softc->filemarks; 1909 error = saspace(periph, count - nmarks, spaceop); 1910 /* 1911 * At this point, clear that we've written the tape 1912 * and that we've written any filemarks. We really 1913 * don't know what the applications wishes to do next- 1914 * the sacheckeod's will make sure we terminated the 1915 * tape correctly if we'd been writing, but the next 1916 * action the user application takes will set again 1917 * whether we need to write filemarks. 1918 */ 1919 softc->flags &= 1920 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1921 softc->filemarks = 0; 1922 break; 1923 } 1924 case MTREW: /* rewind */ 1925 PENDING_MOUNT_CHECK(softc, periph, dev); 1926 (void) sacheckeod(periph); 1927 error = sarewind(periph); 1928 /* see above */ 1929 softc->flags &= 1930 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1931 softc->flags &= ~SA_FLAG_ERR_PENDING; 1932 softc->filemarks = 0; 1933 break; 1934 case MTERASE: /* erase */ 1935 PENDING_MOUNT_CHECK(softc, periph, dev); 1936 error = saerase(periph, count); 1937 softc->flags &= 1938 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1939 softc->flags &= ~SA_FLAG_ERR_PENDING; 1940 break; 1941 case MTRETENS: /* re-tension tape */ 1942 PENDING_MOUNT_CHECK(softc, periph, dev); 1943 error = saretension(periph); 1944 softc->flags &= 1945 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1946 softc->flags &= ~SA_FLAG_ERR_PENDING; 1947 break; 1948 case MTOFFL: /* rewind and put the drive offline */ 1949 1950 PENDING_MOUNT_CHECK(softc, periph, dev); 1951 1952 (void) sacheckeod(periph); 1953 /* see above */ 1954 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1955 softc->filemarks = 0; 1956 1957 error = sarewind(periph); 1958 /* clear the frozen flag anyway */ 1959 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1960 1961 /* 1962 * Be sure to allow media removal before ejecting. 1963 */ 1964 1965 saprevent(periph, PR_ALLOW); 1966 if (error == 0) { 1967 error = saloadunload(periph, FALSE); 1968 if (error == 0) { 1969 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1970 } 1971 } 1972 break; 1973 1974 case MTLOAD: 1975 error = saloadunload(periph, TRUE); 1976 break; 1977 case MTNOP: /* no operation, sets status only */ 1978 case MTCACHE: /* enable controller cache */ 1979 case MTNOCACHE: /* disable controller cache */ 1980 error = 0; 1981 break; 1982 1983 case MTSETBSIZ: /* Set block size for device */ 1984 1985 PENDING_MOUNT_CHECK(softc, periph, dev); 1986 1987 if ((softc->sili != 0) 1988 && (count != 0)) { 1989 xpt_print(periph->path, "Can't enter fixed " 1990 "block mode with SILI enabled\n"); 1991 error = EINVAL; 1992 break; 1993 } 1994 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1995 0, 0, 0); 1996 if (error == 0) { 1997 softc->last_media_blksize = 1998 softc->media_blksize; 1999 softc->media_blksize = count; 2000 if (count) { 2001 softc->flags |= SA_FLAG_FIXED; 2002 if (powerof2(count)) { 2003 softc->blk_shift = 2004 ffs(count) - 1; 2005 softc->blk_mask = count - 1; 2006 } else { 2007 softc->blk_mask = ~0; 2008 softc->blk_shift = 0; 2009 } 2010 /* 2011 * Make the user's desire 'persistent'. 2012 */ 2013 softc->quirks &= ~SA_QUIRK_VARIABLE; 2014 softc->quirks |= SA_QUIRK_FIXED; 2015 } else { 2016 softc->flags &= ~SA_FLAG_FIXED; 2017 if (softc->max_blk == 0) { 2018 softc->max_blk = ~0; 2019 } 2020 softc->blk_shift = 0; 2021 if (softc->blk_gran != 0) { 2022 softc->blk_mask = 2023 softc->blk_gran - 1; 2024 } else { 2025 softc->blk_mask = 0; 2026 } 2027 /* 2028 * Make the user's desire 'persistent'. 2029 */ 2030 softc->quirks |= SA_QUIRK_VARIABLE; 2031 softc->quirks &= ~SA_QUIRK_FIXED; 2032 } 2033 } 2034 break; 2035 case MTSETDNSTY: /* Set density for device and mode */ 2036 PENDING_MOUNT_CHECK(softc, periph, dev); 2037 2038 if (count > UCHAR_MAX) { 2039 error = EINVAL; 2040 break; 2041 } else { 2042 error = sasetparams(periph, SA_PARAM_DENSITY, 2043 0, count, 0, 0); 2044 } 2045 break; 2046 case MTCOMP: /* enable compression */ 2047 PENDING_MOUNT_CHECK(softc, periph, dev); 2048 /* 2049 * Some devices don't support compression, and 2050 * don't like it if you ask them for the 2051 * compression page. 2052 */ 2053 if ((softc->quirks & SA_QUIRK_NOCOMP) || 2054 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 2055 error = ENODEV; 2056 break; 2057 } 2058 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2059 0, 0, count, SF_NO_PRINT); 2060 break; 2061 default: 2062 error = EINVAL; 2063 } 2064 break; 2065 } 2066 case MTIOCIEOT: 2067 case MTIOCEEOT: 2068 error = 0; 2069 break; 2070 case MTIOCRDSPOS: 2071 PENDING_MOUNT_CHECK(softc, periph, dev); 2072 error = sardpos(periph, 0, (uint32_t *) arg); 2073 break; 2074 case MTIOCRDHPOS: 2075 PENDING_MOUNT_CHECK(softc, periph, dev); 2076 error = sardpos(periph, 1, (uint32_t *) arg); 2077 break; 2078 case MTIOCSLOCATE: 2079 case MTIOCHLOCATE: { 2080 struct mtlocate locate_info; 2081 int hard; 2082 2083 bzero(&locate_info, sizeof(locate_info)); 2084 locate_info.logical_id = *((uint32_t *)arg); 2085 if (cmd == MTIOCSLOCATE) 2086 hard = 0; 2087 else 2088 hard = 1; 2089 2090 PENDING_MOUNT_CHECK(softc, periph, dev); 2091 2092 error = sasetpos(periph, hard, &locate_info); 2093 break; 2094 } 2095 case MTIOCEXTLOCATE: 2096 PENDING_MOUNT_CHECK(softc, periph, dev); 2097 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2098 softc->flags &= 2099 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2100 softc->flags &= ~SA_FLAG_ERR_PENDING; 2101 softc->filemarks = 0; 2102 break; 2103 case MTIOCGETEOTMODEL: 2104 error = 0; 2105 if (softc->quirks & SA_QUIRK_1FM) 2106 mode = 1; 2107 else 2108 mode = 2; 2109 *((uint32_t *) arg) = mode; 2110 break; 2111 case MTIOCSETEOTMODEL: 2112 error = 0; 2113 switch (*((uint32_t *) arg)) { 2114 case 1: 2115 softc->quirks &= ~SA_QUIRK_2FM; 2116 softc->quirks |= SA_QUIRK_1FM; 2117 break; 2118 case 2: 2119 softc->quirks &= ~SA_QUIRK_1FM; 2120 softc->quirks |= SA_QUIRK_2FM; 2121 break; 2122 default: 2123 error = EINVAL; 2124 break; 2125 } 2126 break; 2127 case MTIOCRBLIM: { 2128 struct mtrblim *rblim; 2129 2130 rblim = (struct mtrblim *)arg; 2131 2132 rblim->granularity = softc->blk_gran; 2133 rblim->min_block_length = softc->min_blk; 2134 rblim->max_block_length = softc->max_blk; 2135 break; 2136 } 2137 default: 2138 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2139 break; 2140 } 2141 2142 /* 2143 * Check to see if we cleared a frozen state 2144 */ 2145 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2146 switch(cmd) { 2147 case MTIOCRDSPOS: 2148 case MTIOCRDHPOS: 2149 case MTIOCSLOCATE: 2150 case MTIOCHLOCATE: 2151 /* 2152 * XXX KDM look at this. 2153 */ 2154 softc->fileno = (daddr_t) -1; 2155 softc->blkno = (daddr_t) -1; 2156 softc->rep_blkno = (daddr_t) -1; 2157 softc->rep_fileno = (daddr_t) -1; 2158 softc->partition = (daddr_t) -1; 2159 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2160 xpt_print(periph->path, 2161 "tape state now unfrozen.\n"); 2162 break; 2163 default: 2164 break; 2165 } 2166 } 2167 if (didlockperiph) { 2168 cam_periph_unhold(periph); 2169 } 2170 cam_periph_unlock(periph); 2171 return (error); 2172 } 2173 2174 static void 2175 sainit(void) 2176 { 2177 cam_status status; 2178 2179 /* 2180 * Install a global async callback. 2181 */ 2182 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2183 2184 if (status != CAM_REQ_CMP) { 2185 printf("sa: Failed to attach master async callback " 2186 "due to status 0x%x!\n", status); 2187 } 2188 } 2189 2190 static void 2191 sadevgonecb(void *arg) 2192 { 2193 struct cam_periph *periph; 2194 struct mtx *mtx; 2195 struct sa_softc *softc; 2196 2197 periph = (struct cam_periph *)arg; 2198 softc = (struct sa_softc *)periph->softc; 2199 2200 mtx = cam_periph_mtx(periph); 2201 mtx_lock(mtx); 2202 2203 softc->num_devs_to_destroy--; 2204 if (softc->num_devs_to_destroy == 0) { 2205 int i; 2206 2207 /* 2208 * When we have gotten all of our callbacks, we will get 2209 * no more close calls from devfs. So if we have any 2210 * dangling opens, we need to release the reference held 2211 * for that particular context. 2212 */ 2213 for (i = 0; i < softc->open_count; i++) 2214 cam_periph_release_locked(periph); 2215 2216 softc->open_count = 0; 2217 2218 /* 2219 * Release the reference held for devfs, all of our 2220 * instances are gone now. 2221 */ 2222 cam_periph_release_locked(periph); 2223 } 2224 2225 /* 2226 * We reference the lock directly here, instead of using 2227 * cam_periph_unlock(). The reason is that the final call to 2228 * cam_periph_release_locked() above could result in the periph 2229 * getting freed. If that is the case, dereferencing the periph 2230 * with a cam_periph_unlock() call would cause a page fault. 2231 */ 2232 mtx_unlock(mtx); 2233 } 2234 2235 static void 2236 saoninvalidate(struct cam_periph *periph) 2237 { 2238 struct sa_softc *softc; 2239 2240 softc = (struct sa_softc *)periph->softc; 2241 2242 /* 2243 * De-register any async callbacks. 2244 */ 2245 xpt_register_async(0, saasync, periph, periph->path); 2246 2247 softc->flags |= SA_FLAG_INVALID; 2248 2249 /* 2250 * Return all queued I/O with ENXIO. 2251 * XXX Handle any transactions queued to the card 2252 * with XPT_ABORT_CCB. 2253 */ 2254 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2255 softc->queue_count = 0; 2256 2257 /* 2258 * Tell devfs that all of our devices have gone away, and ask for a 2259 * callback when it has cleaned up its state. 2260 */ 2261 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2262 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2263 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2264 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2265 } 2266 2267 static void 2268 sacleanup(struct cam_periph *periph) 2269 { 2270 struct sa_softc *softc; 2271 2272 softc = (struct sa_softc *)periph->softc; 2273 2274 cam_periph_unlock(periph); 2275 2276 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2277 && (((softc->sysctl_timeout_tree != NULL) 2278 && (sysctl_ctx_free(&softc->sysctl_timeout_ctx) != 0)) 2279 || sysctl_ctx_free(&softc->sysctl_ctx) != 0)) 2280 xpt_print(periph->path, "can't remove sysctl context\n"); 2281 2282 cam_periph_lock(periph); 2283 2284 devstat_remove_entry(softc->device_stats); 2285 2286 free(softc, M_SCSISA); 2287 } 2288 2289 static void 2290 saasync(void *callback_arg, uint32_t code, 2291 struct cam_path *path, void *arg) 2292 { 2293 struct cam_periph *periph; 2294 2295 periph = (struct cam_periph *)callback_arg; 2296 switch (code) { 2297 case AC_FOUND_DEVICE: 2298 { 2299 struct ccb_getdev *cgd; 2300 cam_status status; 2301 2302 cgd = (struct ccb_getdev *)arg; 2303 if (cgd == NULL) 2304 break; 2305 2306 if (cgd->protocol != PROTO_SCSI) 2307 break; 2308 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2309 break; 2310 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2311 break; 2312 2313 /* 2314 * Allocate a peripheral instance for 2315 * this device and start the probe 2316 * process. 2317 */ 2318 status = cam_periph_alloc(saregister, saoninvalidate, 2319 sacleanup, sastart, 2320 "sa", CAM_PERIPH_BIO, path, 2321 saasync, AC_FOUND_DEVICE, cgd); 2322 2323 if (status != CAM_REQ_CMP 2324 && status != CAM_REQ_INPROG) 2325 printf("saasync: Unable to probe new device " 2326 "due to status 0x%x\n", status); 2327 break; 2328 } 2329 default: 2330 cam_periph_async(periph, code, path, arg); 2331 break; 2332 } 2333 } 2334 2335 static void 2336 sasetupdev(struct sa_softc *softc, struct cdev *dev) 2337 { 2338 2339 dev->si_iosize_max = softc->maxio; 2340 dev->si_flags |= softc->si_flags; 2341 /* 2342 * Keep a count of how many non-alias devices we have created, 2343 * so we can make sure we clean them all up on shutdown. Aliases 2344 * are cleaned up when we destroy the device they're an alias for. 2345 */ 2346 if ((dev->si_flags & SI_ALIAS) == 0) 2347 softc->num_devs_to_destroy++; 2348 } 2349 2350 /* 2351 * Load the global (for all sa(4) instances) and per-instance tunable 2352 * values for timeouts for various sa(4) commands. This should be run 2353 * after the default timeouts are fetched from the drive, so the user's 2354 * preference will override the drive's defaults. 2355 */ 2356 static void 2357 saloadtotunables(struct sa_softc *softc) 2358 { 2359 int i; 2360 char tmpstr[80]; 2361 2362 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) { 2363 int tmpval, retval; 2364 2365 /* First grab any global timeout setting */ 2366 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.timeout.%s", 2367 sa_default_timeouts[i].desc); 2368 retval = TUNABLE_INT_FETCH(tmpstr, &tmpval); 2369 if (retval != 0) 2370 softc->timeout_info[i] = tmpval; 2371 2372 /* 2373 * Then overwrite any global timeout settings with 2374 * per-instance timeout settings. 2375 */ 2376 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.timeout.%s", 2377 softc->periph->unit_number, sa_default_timeouts[i].desc); 2378 retval = TUNABLE_INT_FETCH(tmpstr, &tmpval); 2379 if (retval != 0) 2380 softc->timeout_info[i] = tmpval; 2381 } 2382 } 2383 2384 static void 2385 sasysctlinit(void *context, int pending) 2386 { 2387 struct cam_periph *periph; 2388 struct sa_softc *softc; 2389 char tmpstr[64], tmpstr2[16]; 2390 int i; 2391 2392 periph = (struct cam_periph *)context; 2393 /* 2394 * If the periph is invalid, no need to setup the sysctls. 2395 */ 2396 if (periph->flags & CAM_PERIPH_INVALID) 2397 goto bailout; 2398 2399 softc = (struct sa_softc *)periph->softc; 2400 2401 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2402 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2403 2404 sysctl_ctx_init(&softc->sysctl_ctx); 2405 softc->flags |= SA_FLAG_SCTX_INIT; 2406 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 2407 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2408 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 2409 if (softc->sysctl_tree == NULL) 2410 goto bailout; 2411 2412 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2413 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2414 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2415 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2416 OID_AUTO, "maxio", CTLFLAG_RD, 2417 &softc->maxio, 0, "Maximum I/O size"); 2418 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2419 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2420 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2421 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2422 OID_AUTO, "inject_eom", CTLFLAG_RW, 2423 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2424 2425 sysctl_ctx_init(&softc->sysctl_timeout_ctx); 2426 softc->sysctl_timeout_tree = SYSCTL_ADD_NODE(&softc->sysctl_timeout_ctx, 2427 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "timeout", 2428 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Timeouts"); 2429 if (softc->sysctl_timeout_tree == NULL) 2430 goto bailout; 2431 2432 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) { 2433 snprintf(tmpstr, sizeof(tmpstr), "%s timeout", 2434 sa_default_timeouts[i].desc); 2435 2436 /* 2437 * Do NOT change this sysctl declaration to also load any 2438 * tunable values for this sa(4) instance. In other words, 2439 * do not change this to CTLFLAG_RWTUN. This function is 2440 * run in parallel with the probe routine that fetches 2441 * recommended timeout values from the tape drive, and we 2442 * don't want the values from the drive to override the 2443 * user's preference. 2444 */ 2445 SYSCTL_ADD_INT(&softc->sysctl_timeout_ctx, 2446 SYSCTL_CHILDREN(softc->sysctl_timeout_tree), 2447 OID_AUTO, sa_default_timeouts[i].desc, CTLFLAG_RW, 2448 &softc->timeout_info[i], 0, tmpstr); 2449 } 2450 2451 bailout: 2452 /* 2453 * Release the reference that was held when this task was enqueued. 2454 */ 2455 cam_periph_release(periph); 2456 } 2457 2458 static cam_status 2459 saregister(struct cam_periph *periph, void *arg) 2460 { 2461 struct sa_softc *softc; 2462 struct ccb_getdev *cgd; 2463 struct ccb_pathinq cpi; 2464 struct make_dev_args args; 2465 caddr_t match; 2466 char tmpstr[80]; 2467 int error; 2468 int i; 2469 2470 cgd = (struct ccb_getdev *)arg; 2471 if (cgd == NULL) { 2472 printf("saregister: no getdev CCB, can't register device\n"); 2473 return (CAM_REQ_CMP_ERR); 2474 } 2475 2476 softc = (struct sa_softc *) 2477 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2478 if (softc == NULL) { 2479 printf("saregister: Unable to probe new device. " 2480 "Unable to allocate softc\n"); 2481 return (CAM_REQ_CMP_ERR); 2482 } 2483 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2484 softc->state = SA_STATE_NORMAL; 2485 softc->fileno = (daddr_t) -1; 2486 softc->blkno = (daddr_t) -1; 2487 softc->rep_fileno = (daddr_t) -1; 2488 softc->rep_blkno = (daddr_t) -1; 2489 softc->partition = (daddr_t) -1; 2490 softc->bop = -1; 2491 softc->eop = -1; 2492 softc->bpew = -1; 2493 2494 bioq_init(&softc->bio_queue); 2495 softc->periph = periph; 2496 periph->softc = softc; 2497 2498 /* 2499 * See if this device has any quirks. 2500 */ 2501 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2502 (caddr_t)sa_quirk_table, 2503 nitems(sa_quirk_table), 2504 sizeof(*sa_quirk_table), scsi_inquiry_match); 2505 2506 if (match != NULL) { 2507 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2508 softc->last_media_blksize = 2509 ((struct sa_quirk_entry *)match)->prefblk; 2510 } else 2511 softc->quirks = SA_QUIRK_NONE; 2512 2513 2514 /* 2515 * Initialize the default timeouts. If this drive supports 2516 * timeout descriptors we'll overwrite these values with the 2517 * recommended timeouts from the drive. 2518 */ 2519 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) 2520 softc->timeout_info[i] = sa_default_timeouts[i].value; 2521 2522 /* 2523 * Long format data for READ POSITION was introduced in SSC, which 2524 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2525 * reports that it is SCSI-2 or older, it is unlikely to support 2526 * long position data, but it might. Some drives from that era 2527 * claim to be SCSI-2, but do support long position information. 2528 * So, instead of immediately disabling long position information 2529 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2530 * then disable long position information if we get an error. 2531 */ 2532 if (cgd->inq_data.version <= SCSI_REV_CCS) 2533 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2534 2535 /* 2536 * The SCSI REPORT SUPPORTED OPERATION CODES command was added in 2537 * SPC-4. That command optionally includes timeout data for 2538 * different commands. Timeout values can vary wildly among 2539 * different drives, so if the drive itself has recommended values, 2540 * we will try to use them. Set this flag to indicate we're going 2541 * to ask the drive for timeout data. This flag also tells us to 2542 * wait on loading timeout tunables so we can properly override 2543 * timeouts with any user-specified values. 2544 */ 2545 if (SID_ANSI_REV(&cgd->inq_data) >= SCSI_REV_SPC4) 2546 softc->flags |= SA_FLAG_RSOC_TO_TRY; 2547 2548 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2549 struct ccb_dev_advinfo cdai; 2550 struct scsi_vpd_extended_inquiry_data ext_inq; 2551 2552 bzero(&ext_inq, sizeof(ext_inq)); 2553 2554 memset(&cdai, 0, sizeof(cdai)); 2555 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2556 2557 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2558 cdai.flags = CDAI_FLAG_NONE; 2559 cdai.buftype = CDAI_TYPE_EXT_INQ; 2560 cdai.bufsiz = sizeof(ext_inq); 2561 cdai.buf = (uint8_t *)&ext_inq; 2562 xpt_action((union ccb *)&cdai); 2563 2564 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2565 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2566 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2567 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2568 softc->flags |= SA_FLAG_PROTECT_SUPP; 2569 } 2570 2571 xpt_path_inq(&cpi, periph->path); 2572 2573 /* 2574 * The SA driver supports a blocksize, but we don't know the 2575 * blocksize until we media is inserted. So, set a flag to 2576 * indicate that the blocksize is unavailable right now. 2577 */ 2578 cam_periph_unlock(periph); 2579 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2580 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2581 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2582 2583 /* 2584 * Load the default value that is either compiled in, or loaded 2585 * in the global kern.cam.sa.allow_io_split tunable. 2586 */ 2587 softc->allow_io_split = sa_allow_io_split; 2588 2589 /* 2590 * Load a per-instance tunable, if it exists. NOTE that this 2591 * tunable WILL GO AWAY in FreeBSD 11.0. 2592 */ 2593 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2594 periph->unit_number); 2595 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2596 2597 /* 2598 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2599 * the smaller of cpi.maxio or maxphys. 2600 */ 2601 if (cpi.maxio == 0) 2602 softc->maxio = DFLTPHYS; 2603 else if (cpi.maxio > maxphys) 2604 softc->maxio = maxphys; 2605 else 2606 softc->maxio = cpi.maxio; 2607 2608 /* 2609 * Record the controller's maximum I/O size so we can report it to 2610 * the user later. 2611 */ 2612 softc->cpi_maxio = cpi.maxio; 2613 2614 /* 2615 * By default we tell physio that we do not want our I/O split. 2616 * The user needs to have a 1:1 mapping between the size of his 2617 * write to a tape character device and the size of the write 2618 * that actually goes down to the drive. 2619 */ 2620 if (softc->allow_io_split == 0) 2621 softc->si_flags = SI_NOSPLIT; 2622 else 2623 softc->si_flags = 0; 2624 2625 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2626 2627 /* 2628 * If the SIM supports unmapped I/O, let physio know that we can 2629 * handle unmapped buffers. 2630 */ 2631 if (cpi.hba_misc & PIM_UNMAPPED) 2632 softc->si_flags |= SI_UNMAPPED; 2633 2634 /* 2635 * Acquire a reference to the periph before we create the devfs 2636 * instances for it. We'll release this reference once the devfs 2637 * instances have been freed. 2638 */ 2639 if (cam_periph_acquire(periph) != 0) { 2640 xpt_print(periph->path, "%s: lost periph during " 2641 "registration!\n", __func__); 2642 cam_periph_lock(periph); 2643 return (CAM_REQ_CMP_ERR); 2644 } 2645 2646 make_dev_args_init(&args); 2647 args.mda_devsw = &sa_cdevsw; 2648 args.mda_si_drv1 = softc->periph; 2649 args.mda_uid = UID_ROOT; 2650 args.mda_gid = GID_OPERATOR; 2651 args.mda_mode = 0660; 2652 2653 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2654 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2655 periph->periph_name, periph->unit_number); 2656 if (error != 0) { 2657 cam_periph_lock(periph); 2658 return (CAM_REQ_CMP_ERR); 2659 } 2660 sasetupdev(softc, softc->devs.ctl_dev); 2661 2662 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2663 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2664 periph->periph_name, periph->unit_number); 2665 if (error != 0) { 2666 cam_periph_lock(periph); 2667 return (CAM_REQ_CMP_ERR); 2668 } 2669 sasetupdev(softc, softc->devs.r_dev); 2670 2671 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2672 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2673 periph->periph_name, periph->unit_number); 2674 if (error != 0) { 2675 cam_periph_lock(periph); 2676 return (CAM_REQ_CMP_ERR); 2677 } 2678 sasetupdev(softc, softc->devs.nr_dev); 2679 2680 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2681 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2682 periph->periph_name, periph->unit_number); 2683 if (error != 0) { 2684 cam_periph_lock(periph); 2685 return (CAM_REQ_CMP_ERR); 2686 } 2687 sasetupdev(softc, softc->devs.er_dev); 2688 2689 cam_periph_lock(periph); 2690 2691 softc->density_type_bits[0] = 0; 2692 softc->density_type_bits[1] = SRDS_MEDIA; 2693 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2694 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2695 /* 2696 * Bump the peripheral refcount for the sysctl thread, in case we 2697 * get invalidated before the thread has a chance to run. Note 2698 * that this runs in parallel with the probe for the timeout 2699 * values. 2700 */ 2701 cam_periph_acquire(periph); 2702 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2703 2704 /* 2705 * Add an async callback so that we get 2706 * notified if this device goes away. 2707 */ 2708 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2709 2710 /* 2711 * See comment above, try fetching timeout values for drives that 2712 * might support it. Otherwise, use the defaults. 2713 * 2714 * We get timeouts from the following places in order of increasing 2715 * priority: 2716 * 1. Driver default timeouts. 2717 * 2. Timeouts loaded from the drive via REPORT SUPPORTED OPERATION 2718 * CODES. (We kick that off here if SA_FLAG_RSOC_TO_TRY is set.) 2719 * 3. Global loader tunables, used for all sa(4) driver instances on 2720 * a machine. 2721 * 4. Instance-specific loader tunables, used for say sa5. 2722 * 5. On the fly user sysctl changes. 2723 * 2724 * Each step will overwrite the timeout value set from the one 2725 * before, so you go from general to most specific. 2726 */ 2727 if (softc->flags & SA_FLAG_RSOC_TO_TRY) { 2728 /* 2729 * Bump the peripheral refcount while we are probing. 2730 */ 2731 cam_periph_acquire(periph); 2732 softc->state = SA_STATE_PROBE; 2733 xpt_schedule(periph, CAM_PRIORITY_DEV); 2734 } else { 2735 /* 2736 * This drive doesn't support Report Supported Operation 2737 * Codes, so we load the tunables at this point to bring 2738 * in any user preferences. 2739 */ 2740 saloadtotunables(softc); 2741 2742 xpt_announce_periph(periph, NULL); 2743 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2744 } 2745 2746 return (CAM_REQ_CMP); 2747 } 2748 2749 static void 2750 sastart(struct cam_periph *periph, union ccb *start_ccb) 2751 { 2752 struct sa_softc *softc; 2753 2754 softc = (struct sa_softc *)periph->softc; 2755 2756 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2757 2758 switch (softc->state) { 2759 case SA_STATE_NORMAL: 2760 { 2761 /* Pull a buffer from the queue and get going on it */ 2762 struct bio *bp; 2763 2764 /* 2765 * See if there is a buf with work for us to do.. 2766 */ 2767 bp = bioq_first(&softc->bio_queue); 2768 if (bp == NULL) { 2769 xpt_release_ccb(start_ccb); 2770 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2771 || (softc->inject_eom != 0)) { 2772 struct bio *done_bp; 2773 2774 if (softc->inject_eom != 0) { 2775 softc->flags |= SA_FLAG_EOM_PENDING; 2776 softc->inject_eom = 0; 2777 /* 2778 * If we're injecting EOM for writes, we 2779 * need to keep PEWS set for 3 queries 2780 * to cover 2 position requests from the 2781 * kernel via sagetpos(), and then allow 2782 * for one for the user to see the BPEW 2783 * flag (e.g. via mt status). After that, 2784 * it will be cleared. 2785 */ 2786 if (bp->bio_cmd == BIO_WRITE) 2787 softc->set_pews_status = 3; 2788 else 2789 softc->set_pews_status = 1; 2790 } 2791 again: 2792 softc->queue_count--; 2793 bioq_remove(&softc->bio_queue, bp); 2794 bp->bio_resid = bp->bio_bcount; 2795 done_bp = bp; 2796 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2797 /* 2798 * We have two different behaviors for 2799 * writes when we hit either Early Warning 2800 * or the PEWZ (Programmable Early Warning 2801 * Zone). The default behavior is that 2802 * for all writes that are currently 2803 * queued after the write where we saw the 2804 * early warning, we will return the write 2805 * with the residual equal to the count. 2806 * i.e. tell the application that 0 bytes 2807 * were written. 2808 * 2809 * The alternate behavior, which is enabled 2810 * when eot_warn is set, is that in 2811 * addition to setting the residual equal 2812 * to the count, we will set the error 2813 * to ENOSPC. 2814 * 2815 * In either case, once queued writes are 2816 * cleared out, we clear the error flag 2817 * (see below) and the application is free to 2818 * attempt to write more. 2819 */ 2820 if (softc->eot_warn != 0) { 2821 bp->bio_flags |= BIO_ERROR; 2822 bp->bio_error = ENOSPC; 2823 } else 2824 bp->bio_error = 0; 2825 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2826 /* 2827 * This can only happen if we're reading 2828 * in fixed length mode. In this case, 2829 * we dump the rest of the list the 2830 * same way. 2831 */ 2832 bp->bio_error = 0; 2833 if (bioq_first(&softc->bio_queue) != NULL) { 2834 biodone(done_bp); 2835 goto again; 2836 } 2837 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2838 bp->bio_error = EIO; 2839 bp->bio_flags |= BIO_ERROR; 2840 } 2841 bp = bioq_first(&softc->bio_queue); 2842 /* 2843 * Only if we have no other buffers queued up 2844 * do we clear the pending error flag. 2845 */ 2846 if (bp == NULL) 2847 softc->flags &= ~SA_FLAG_ERR_PENDING; 2848 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2849 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2850 "%d more buffers queued up\n", 2851 (softc->flags & SA_FLAG_ERR_PENDING), 2852 (bp != NULL)? "not " : " ", softc->queue_count)); 2853 xpt_release_ccb(start_ccb); 2854 biodone(done_bp); 2855 } else { 2856 uint32_t length; 2857 2858 bioq_remove(&softc->bio_queue, bp); 2859 softc->queue_count--; 2860 2861 if ((bp->bio_cmd != BIO_READ) && 2862 (bp->bio_cmd != BIO_WRITE)) { 2863 biofinish(bp, NULL, EOPNOTSUPP); 2864 xpt_release_ccb(start_ccb); 2865 return; 2866 } 2867 length = bp->bio_bcount; 2868 2869 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2870 if (softc->blk_shift != 0) { 2871 length = length >> softc->blk_shift; 2872 } else if (softc->media_blksize != 0) { 2873 length = length / softc->media_blksize; 2874 } else { 2875 bp->bio_error = EIO; 2876 xpt_print(periph->path, "zero blocksize" 2877 " for FIXED length writes?\n"); 2878 biodone(bp); 2879 break; 2880 } 2881 #if 0 2882 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2883 ("issuing a %d fixed record %s\n", 2884 length, (bp->bio_cmd == BIO_READ)? "read" : 2885 "write")); 2886 #endif 2887 } else { 2888 #if 0 2889 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2890 ("issuing a %d variable byte %s\n", 2891 length, (bp->bio_cmd == BIO_READ)? "read" : 2892 "write")); 2893 #endif 2894 } 2895 devstat_start_transaction_bio(softc->device_stats, bp); 2896 /* 2897 * Some people have theorized that we should 2898 * suppress illegal length indication if we are 2899 * running in variable block mode so that we don't 2900 * have to request sense every time our requested 2901 * block size is larger than the written block. 2902 * The residual information from the ccb allows 2903 * us to identify this situation anyway. The only 2904 * problem with this is that we will not get 2905 * information about blocks that are larger than 2906 * our read buffer unless we set the block size 2907 * in the mode page to something other than 0. 2908 * 2909 * I believe that this is a non-issue. If user apps 2910 * don't adjust their read size to match our record 2911 * size, that's just life. Anyway, the typical usage 2912 * would be to issue, e.g., 64KB reads and occasionally 2913 * have to do deal with 512 byte or 1KB intermediate 2914 * records. 2915 * 2916 * That said, though, we now support setting the 2917 * SILI bit on reads, and we set the blocksize to 4 2918 * bytes when we do that. This gives us 2919 * compatibility with software that wants this, 2920 * although the only real difference between that 2921 * and not setting the SILI bit on reads is that we 2922 * won't get a check condition on reads where our 2923 * request size is larger than the block on tape. 2924 * That probably only makes a real difference in 2925 * non-packetized SCSI, where you have to go back 2926 * to the drive to request sense and thus incur 2927 * more latency. 2928 */ 2929 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2930 MTIO_DSREG_RD : MTIO_DSREG_WR; 2931 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2932 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2933 SCSI_RW_READ : SCSI_RW_WRITE) | 2934 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2935 SCSI_RW_BIO : 0), softc->sili, 2936 (softc->flags & SA_FLAG_FIXED) != 0, length, 2937 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2938 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2939 (bp->bio_cmd == BIO_READ) ? 2940 softc->timeout_info[SA_TIMEOUT_READ] : 2941 softc->timeout_info[SA_TIMEOUT_WRITE]); 2942 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2943 start_ccb->ccb_h.ccb_bp = bp; 2944 bp = bioq_first(&softc->bio_queue); 2945 xpt_action(start_ccb); 2946 } 2947 2948 if (bp != NULL) { 2949 /* Have more work to do, so ensure we stay scheduled */ 2950 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2951 } 2952 break; 2953 } 2954 case SA_STATE_PROBE: { 2955 int num_opcodes; 2956 size_t alloc_len; 2957 uint8_t *params; 2958 2959 /* 2960 * This is an arbitrary number. An IBM LTO-6 drive reports 2961 * 67 entries, and an IBM LTO-9 drive reports 71 entries. 2962 * There can theoretically be more than 256 because 2963 * service actions of a particular opcode are reported 2964 * separately, but we're far enough ahead of the practical 2965 * number here that we don't need to implement logic to 2966 * retry if we don't get all the timeout descriptors. 2967 */ 2968 num_opcodes = 256; 2969 2970 alloc_len = num_opcodes * 2971 (sizeof(struct scsi_report_supported_opcodes_descr) + 2972 sizeof(struct scsi_report_supported_opcodes_timeout)); 2973 2974 params = malloc(alloc_len, M_SCSISA, M_NOWAIT| M_ZERO); 2975 if (params == NULL) { 2976 /* 2977 * If this happens, go with default 2978 * timeouts and announce the drive. 2979 */ 2980 saloadtotunables(softc); 2981 2982 softc->state = SA_STATE_NORMAL; 2983 2984 xpt_announce_periph(periph, NULL); 2985 xpt_announce_quirks(periph, softc->quirks, 2986 SA_QUIRK_BIT_STRING); 2987 xpt_release_ccb(start_ccb); 2988 cam_periph_release_locked(periph); 2989 return; 2990 } 2991 2992 scsi_report_supported_opcodes(&start_ccb->csio, 2993 /*retries*/ 3, 2994 /*cbfcnp*/ sadone, 2995 /*tag_action*/ MSG_SIMPLE_Q_TAG, 2996 /*options*/ RSO_RCTD, 2997 /*req_opcode*/ 0, 2998 /*req_service_action*/ 0, 2999 /*data_ptr*/ params, 3000 /*dxfer_len*/ alloc_len, 3001 /*sense_len*/ SSD_FULL_SIZE, 3002 /*timeout*/ softc->timeout_info[SA_TIMEOUT_TUR]); 3003 3004 xpt_action(start_ccb); 3005 break; 3006 } 3007 case SA_STATE_ABNORMAL: 3008 default: 3009 panic("state 0x%x in sastart", softc->state); 3010 break; 3011 } 3012 } 3013 3014 static void 3015 sadone(struct cam_periph *periph, union ccb *done_ccb) 3016 { 3017 struct sa_softc *softc; 3018 struct ccb_scsiio *csio; 3019 struct bio *bp; 3020 int error; 3021 3022 softc = (struct sa_softc *)periph->softc; 3023 csio = &done_ccb->csio; 3024 error = 0; 3025 3026 if (softc->state == SA_STATE_NORMAL) { 3027 softc->dsreg = MTIO_DSREG_REST; 3028 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 3029 3030 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 3031 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 3032 /* 3033 * A retry was scheduled, so just return. 3034 */ 3035 return; 3036 } 3037 } 3038 } else if (softc->state == SA_STATE_PROBE) { 3039 bp = NULL; 3040 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 3041 /* 3042 * Note that on probe, we just run through 3043 * cam_periph_error(), since saerror() has a lot of 3044 * special handling for I/O errors. We don't need 3045 * that to get the opcodes. We either succeed 3046 * after a retry or two, or give up. We don't 3047 * print sense, we don't need to worry the user if 3048 * this drive doesn't support timeout descriptors. 3049 */ 3050 if ((error = cam_periph_error(done_ccb, 0, 3051 SF_NO_PRINT)) == ERESTART) { 3052 /* 3053 * A retry was scheduled, so just return. 3054 */ 3055 return; 3056 } else if (error != 0) { 3057 /* We failed to get opcodes. Give up. */ 3058 3059 saloadtotunables(softc); 3060 3061 softc->state = SA_STATE_NORMAL; 3062 3063 xpt_release_ccb(done_ccb); 3064 3065 xpt_announce_periph(periph, NULL); 3066 xpt_announce_quirks(periph, softc->quirks, 3067 SA_QUIRK_BIT_STRING); 3068 cam_periph_release_locked(periph); 3069 return; 3070 } 3071 } 3072 /* 3073 * At this point, we have succeeded, so load the timeouts 3074 * and go into the normal state. 3075 */ 3076 softc->state = SA_STATE_NORMAL; 3077 3078 /* 3079 * First, load the timeouts we got from the drive. 3080 */ 3081 saloadtimeouts(softc, done_ccb); 3082 3083 /* 3084 * Next, overwrite the timeouts from the drive with any 3085 * loader tunables that the user set. 3086 */ 3087 saloadtotunables(softc); 3088 3089 xpt_release_ccb(done_ccb); 3090 xpt_announce_periph(periph, NULL); 3091 xpt_announce_quirks(periph, softc->quirks, 3092 SA_QUIRK_BIT_STRING); 3093 cam_periph_release_locked(periph); 3094 return; 3095 } else { 3096 panic("state 0x%x in sadone", softc->state); 3097 } 3098 3099 if (error == EIO) { 3100 /* 3101 * Catastrophic error. Mark the tape as frozen 3102 * (we no longer know tape position). 3103 * 3104 * Return all queued I/O with EIO, and unfreeze 3105 * our queue so that future transactions that 3106 * attempt to fix this problem can get to the 3107 * device. 3108 * 3109 */ 3110 3111 softc->flags |= SA_FLAG_TAPE_FROZEN; 3112 bioq_flush(&softc->bio_queue, NULL, EIO); 3113 } 3114 if (error != 0) { 3115 bp->bio_resid = bp->bio_bcount; 3116 bp->bio_error = error; 3117 bp->bio_flags |= BIO_ERROR; 3118 /* 3119 * In the error case, position is updated in saerror. 3120 */ 3121 } else { 3122 bp->bio_resid = csio->resid; 3123 bp->bio_error = 0; 3124 if (csio->resid != 0) { 3125 bp->bio_flags |= BIO_ERROR; 3126 } 3127 if (bp->bio_cmd == BIO_WRITE) { 3128 softc->flags |= SA_FLAG_TAPE_WRITTEN; 3129 softc->filemarks = 0; 3130 } 3131 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 3132 (softc->blkno != (daddr_t) -1)) { 3133 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3134 uint32_t l; 3135 if (softc->blk_shift != 0) { 3136 l = bp->bio_bcount >> 3137 softc->blk_shift; 3138 } else { 3139 l = bp->bio_bcount / 3140 softc->media_blksize; 3141 } 3142 softc->blkno += (daddr_t) l; 3143 } else { 3144 softc->blkno++; 3145 } 3146 } 3147 } 3148 /* 3149 * If we had an error (immediate or pending), 3150 * release the device queue now. 3151 */ 3152 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 3153 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 3154 if (error || bp->bio_resid) { 3155 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3156 ("error %d resid %ld count %ld\n", error, 3157 bp->bio_resid, bp->bio_bcount)); 3158 } 3159 biofinish(bp, softc->device_stats, 0); 3160 xpt_release_ccb(done_ccb); 3161 } 3162 3163 /* 3164 * Mount the tape (make sure it's ready for I/O). 3165 */ 3166 static int 3167 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 3168 { 3169 struct sa_softc *softc; 3170 union ccb *ccb; 3171 int error; 3172 3173 /* 3174 * oflags can be checked for 'kind' of open (read-only check) - later 3175 * dev can be checked for a control-mode or compression open - later 3176 */ 3177 UNUSED_PARAMETER(oflags); 3178 UNUSED_PARAMETER(dev); 3179 3180 softc = (struct sa_softc *)periph->softc; 3181 3182 /* 3183 * This should determine if something has happened since the last 3184 * open/mount that would invalidate the mount. We do *not* want 3185 * to retry this command- we just want the status. But we only 3186 * do this if we're mounted already- if we're not mounted, 3187 * we don't care about the unit read state and can instead use 3188 * this opportunity to attempt to reserve the tape unit. 3189 */ 3190 3191 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 3192 ccb = cam_periph_getccb(periph, 1); 3193 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3194 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3195 softc->timeout_info[SA_TIMEOUT_TUR]); 3196 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3197 softc->device_stats); 3198 if (error == ENXIO) { 3199 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 3200 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3201 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3202 softc->timeout_info[SA_TIMEOUT_TUR]); 3203 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3204 softc->device_stats); 3205 } else if (error) { 3206 /* 3207 * We don't need to freeze the tape because we 3208 * will now attempt to rewind/load it. 3209 */ 3210 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 3211 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3212 xpt_print(periph->path, 3213 "error %d on TUR in samount\n", error); 3214 } 3215 } 3216 } else { 3217 error = sareservereleaseunit(periph, TRUE); 3218 if (error) { 3219 return (error); 3220 } 3221 ccb = cam_periph_getccb(periph, 1); 3222 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3223 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3224 softc->timeout_info[SA_TIMEOUT_TUR]); 3225 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3226 softc->device_stats); 3227 } 3228 3229 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 3230 struct scsi_read_block_limits_data *rblim = NULL; 3231 int comp_enabled, comp_supported; 3232 uint8_t write_protect, guessing = 0; 3233 3234 /* 3235 * Clear out old state. 3236 */ 3237 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 3238 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 3239 softc->filemarks = 0; 3240 3241 /* 3242 * *Very* first off, make sure we're loaded to BOT. 3243 */ 3244 scsi_load_unload(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3245 FALSE, FALSE, 1, SSD_FULL_SIZE, 3246 softc->timeout_info[SA_TIMEOUT_LOAD]); 3247 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3248 softc->device_stats); 3249 3250 /* 3251 * In case this doesn't work, do a REWIND instead 3252 */ 3253 if (error) { 3254 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 3255 FALSE, SSD_FULL_SIZE, 3256 softc->timeout_info[SA_TIMEOUT_REWIND]); 3257 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3258 softc->device_stats); 3259 } 3260 if (error) { 3261 xpt_release_ccb(ccb); 3262 goto exit; 3263 } 3264 3265 /* 3266 * Do a dummy test read to force access to the 3267 * media so that the drive will really know what's 3268 * there. We actually don't really care what the 3269 * blocksize on tape is and don't expect to really 3270 * read a full record. 3271 */ 3272 rblim = (struct scsi_read_block_limits_data *) 3273 malloc(8192, M_SCSISA, M_NOWAIT); 3274 if (rblim == NULL) { 3275 xpt_print(periph->path, "no memory for test read\n"); 3276 xpt_release_ccb(ccb); 3277 error = ENOMEM; 3278 goto exit; 3279 } 3280 3281 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 3282 scsi_sa_read_write(&ccb->csio, 0, NULL, 3283 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 3284 (void *) rblim, 8192, SSD_FULL_SIZE, 3285 softc->timeout_info[SA_TIMEOUT_READ]); 3286 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3287 softc->device_stats); 3288 scsi_rewind(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 3289 FALSE, SSD_FULL_SIZE, 3290 softc->timeout_info[SA_TIMEOUT_REWIND]); 3291 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3292 SF_NO_PRINT | SF_RETRY_UA, 3293 softc->device_stats); 3294 if (error) { 3295 xpt_print(periph->path, 3296 "unable to rewind after test read\n"); 3297 xpt_release_ccb(ccb); 3298 goto exit; 3299 } 3300 } 3301 3302 /* 3303 * Next off, determine block limits. 3304 */ 3305 scsi_read_block_limits(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 3306 rblim, SSD_FULL_SIZE, 3307 softc->timeout_info[SA_TIMEOUT_READ_BLOCK_LIMITS]); 3308 3309 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3310 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3311 3312 xpt_release_ccb(ccb); 3313 3314 if (error != 0) { 3315 /* 3316 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3317 * a MANDATORY command. Anyway- it doesn't matter- 3318 * we can proceed anyway. 3319 */ 3320 softc->blk_gran = 0; 3321 softc->max_blk = ~0; 3322 softc->min_blk = 0; 3323 } else { 3324 if (softc->scsi_rev >= SCSI_REV_SPC) { 3325 softc->blk_gran = RBL_GRAN(rblim); 3326 } else { 3327 softc->blk_gran = 0; 3328 } 3329 /* 3330 * We take max_blk == min_blk to mean a default to 3331 * fixed mode- but note that whatever we get out of 3332 * sagetparams below will actually determine whether 3333 * we are actually *in* fixed mode. 3334 */ 3335 softc->max_blk = scsi_3btoul(rblim->maximum); 3336 softc->min_blk = scsi_2btoul(rblim->minimum); 3337 } 3338 /* 3339 * Next, perform a mode sense to determine 3340 * current density, blocksize, compression etc. 3341 */ 3342 error = sagetparams(periph, SA_PARAM_ALL, 3343 &softc->media_blksize, 3344 &softc->media_density, 3345 &softc->media_numblks, 3346 &softc->buffer_mode, &write_protect, 3347 &softc->speed, &comp_supported, 3348 &comp_enabled, &softc->comp_algorithm, 3349 NULL, NULL, 0, 0); 3350 3351 if (error != 0) { 3352 /* 3353 * We could work a little harder here. We could 3354 * adjust our attempts to get information. It 3355 * might be an ancient tape drive. If someone 3356 * nudges us, we'll do that. 3357 */ 3358 goto exit; 3359 } 3360 3361 /* 3362 * If no quirk has determined that this is a device that is 3363 * preferred to be in fixed or variable mode, now is the time 3364 * to find out. 3365 */ 3366 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3367 guessing = 1; 3368 /* 3369 * This could be expensive to find out. Luckily we 3370 * only need to do this once. If we start out in 3371 * 'default' mode, try and set ourselves to one 3372 * of the densities that would determine a wad 3373 * of other stuff. Go from highest to lowest. 3374 */ 3375 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3376 int i; 3377 static uint8_t ctry[] = { 3378 SCSI_DENSITY_HALFINCH_PE, 3379 SCSI_DENSITY_HALFINCH_6250C, 3380 SCSI_DENSITY_HALFINCH_6250, 3381 SCSI_DENSITY_HALFINCH_1600, 3382 SCSI_DENSITY_HALFINCH_800, 3383 SCSI_DENSITY_QIC_4GB, 3384 SCSI_DENSITY_QIC_2GB, 3385 SCSI_DENSITY_QIC_525_320, 3386 SCSI_DENSITY_QIC_150, 3387 SCSI_DENSITY_QIC_120, 3388 SCSI_DENSITY_QIC_24, 3389 SCSI_DENSITY_QIC_11_9TRK, 3390 SCSI_DENSITY_QIC_11_4TRK, 3391 SCSI_DENSITY_QIC_1320, 3392 SCSI_DENSITY_QIC_3080, 3393 0 3394 }; 3395 for (i = 0; ctry[i]; i++) { 3396 error = sasetparams(periph, 3397 SA_PARAM_DENSITY, 0, ctry[i], 3398 0, SF_NO_PRINT); 3399 if (error == 0) { 3400 softc->media_density = ctry[i]; 3401 break; 3402 } 3403 } 3404 } 3405 switch (softc->media_density) { 3406 case SCSI_DENSITY_QIC_11_4TRK: 3407 case SCSI_DENSITY_QIC_11_9TRK: 3408 case SCSI_DENSITY_QIC_24: 3409 case SCSI_DENSITY_QIC_120: 3410 case SCSI_DENSITY_QIC_150: 3411 case SCSI_DENSITY_QIC_525_320: 3412 case SCSI_DENSITY_QIC_1320: 3413 case SCSI_DENSITY_QIC_3080: 3414 softc->quirks &= ~SA_QUIRK_2FM; 3415 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3416 softc->last_media_blksize = 512; 3417 break; 3418 case SCSI_DENSITY_QIC_4GB: 3419 case SCSI_DENSITY_QIC_2GB: 3420 softc->quirks &= ~SA_QUIRK_2FM; 3421 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3422 softc->last_media_blksize = 1024; 3423 break; 3424 default: 3425 softc->last_media_blksize = 3426 softc->media_blksize; 3427 softc->quirks |= SA_QUIRK_VARIABLE; 3428 break; 3429 } 3430 } 3431 3432 /* 3433 * If no quirk has determined that this is a device that needs 3434 * to have 2 Filemarks at EOD, now is the time to find out. 3435 */ 3436 3437 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3438 switch (softc->media_density) { 3439 case SCSI_DENSITY_HALFINCH_800: 3440 case SCSI_DENSITY_HALFINCH_1600: 3441 case SCSI_DENSITY_HALFINCH_6250: 3442 case SCSI_DENSITY_HALFINCH_6250C: 3443 case SCSI_DENSITY_HALFINCH_PE: 3444 softc->quirks &= ~SA_QUIRK_1FM; 3445 softc->quirks |= SA_QUIRK_2FM; 3446 break; 3447 default: 3448 break; 3449 } 3450 } 3451 3452 /* 3453 * Now validate that some info we got makes sense. 3454 */ 3455 if ((softc->max_blk < softc->media_blksize) || 3456 (softc->min_blk > softc->media_blksize && 3457 softc->media_blksize)) { 3458 xpt_print(periph->path, 3459 "BLOCK LIMITS (%d..%d) could not match current " 3460 "block settings (%d)- adjusting\n", softc->min_blk, 3461 softc->max_blk, softc->media_blksize); 3462 softc->max_blk = softc->min_blk = 3463 softc->media_blksize; 3464 } 3465 3466 /* 3467 * Now put ourselves into the right frame of mind based 3468 * upon quirks... 3469 */ 3470 tryagain: 3471 /* 3472 * If we want to be in FIXED mode and our current blocksize 3473 * is not equal to our last blocksize (if nonzero), try and 3474 * set ourselves to this last blocksize (as the 'preferred' 3475 * block size). The initial quirkmatch at registry sets the 3476 * initial 'last' blocksize. If, for whatever reason, this 3477 * 'last' blocksize is zero, set the blocksize to 512, 3478 * or min_blk if that's larger. 3479 */ 3480 if ((softc->quirks & SA_QUIRK_FIXED) && 3481 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3482 (softc->media_blksize != softc->last_media_blksize)) { 3483 softc->media_blksize = softc->last_media_blksize; 3484 if (softc->media_blksize == 0) { 3485 softc->media_blksize = 512; 3486 if (softc->media_blksize < softc->min_blk) { 3487 softc->media_blksize = softc->min_blk; 3488 } 3489 } 3490 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3491 softc->media_blksize, 0, 0, SF_NO_PRINT); 3492 if (error) { 3493 xpt_print(periph->path, 3494 "unable to set fixed blocksize to %d\n", 3495 softc->media_blksize); 3496 goto exit; 3497 } 3498 } 3499 3500 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3501 (softc->media_blksize != 0)) { 3502 softc->last_media_blksize = softc->media_blksize; 3503 softc->media_blksize = 0; 3504 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3505 0, 0, 0, SF_NO_PRINT); 3506 if (error) { 3507 /* 3508 * If this fails and we were guessing, just 3509 * assume that we got it wrong and go try 3510 * fixed block mode. Don't even check against 3511 * density code at this point. 3512 */ 3513 if (guessing) { 3514 softc->quirks &= ~SA_QUIRK_VARIABLE; 3515 softc->quirks |= SA_QUIRK_FIXED; 3516 if (softc->last_media_blksize == 0) 3517 softc->last_media_blksize = 512; 3518 goto tryagain; 3519 } 3520 xpt_print(periph->path, 3521 "unable to set variable blocksize\n"); 3522 goto exit; 3523 } 3524 } 3525 3526 /* 3527 * Now that we have the current block size, 3528 * set up some parameters for sastart's usage. 3529 */ 3530 if (softc->media_blksize) { 3531 softc->flags |= SA_FLAG_FIXED; 3532 if (powerof2(softc->media_blksize)) { 3533 softc->blk_shift = 3534 ffs(softc->media_blksize) - 1; 3535 softc->blk_mask = softc->media_blksize - 1; 3536 } else { 3537 softc->blk_mask = ~0; 3538 softc->blk_shift = 0; 3539 } 3540 } else { 3541 /* 3542 * The SCSI-3 spec allows 0 to mean "unspecified". 3543 * The SCSI-1 spec allows 0 to mean 'infinite'. 3544 * 3545 * Either works here. 3546 */ 3547 if (softc->max_blk == 0) { 3548 softc->max_blk = ~0; 3549 } 3550 softc->blk_shift = 0; 3551 if (softc->blk_gran != 0) { 3552 softc->blk_mask = softc->blk_gran - 1; 3553 } else { 3554 softc->blk_mask = 0; 3555 } 3556 } 3557 3558 if (write_protect) 3559 softc->flags |= SA_FLAG_TAPE_WP; 3560 3561 if (comp_supported) { 3562 if (softc->saved_comp_algorithm == 0) 3563 softc->saved_comp_algorithm = 3564 softc->comp_algorithm; 3565 softc->flags |= SA_FLAG_COMP_SUPP; 3566 if (comp_enabled) 3567 softc->flags |= SA_FLAG_COMP_ENABLED; 3568 } else 3569 softc->flags |= SA_FLAG_COMP_UNSUPP; 3570 3571 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3572 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3573 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3574 0, 0, SF_NO_PRINT); 3575 if (error == 0) { 3576 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3577 } else { 3578 xpt_print(periph->path, 3579 "unable to set buffered mode\n"); 3580 } 3581 error = 0; /* not an error */ 3582 } 3583 3584 if (error == 0) { 3585 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3586 } 3587 exit: 3588 if (rblim != NULL) 3589 free(rblim, M_SCSISA); 3590 3591 if (error != 0) { 3592 softc->dsreg = MTIO_DSREG_NIL; 3593 } else { 3594 softc->fileno = softc->blkno = 0; 3595 softc->rep_fileno = softc->rep_blkno = -1; 3596 softc->partition = 0; 3597 softc->dsreg = MTIO_DSREG_REST; 3598 } 3599 #ifdef SA_1FM_AT_EOD 3600 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3601 softc->quirks |= SA_QUIRK_1FM; 3602 #else 3603 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3604 softc->quirks |= SA_QUIRK_2FM; 3605 #endif 3606 } else 3607 xpt_release_ccb(ccb); 3608 3609 /* 3610 * If we return an error, we're not mounted any more, 3611 * so release any device reservation. 3612 */ 3613 if (error != 0) { 3614 (void) sareservereleaseunit(periph, FALSE); 3615 } else { 3616 /* 3617 * Clear I/O residual. 3618 */ 3619 softc->last_io_resid = 0; 3620 softc->last_ctl_resid = 0; 3621 } 3622 return (error); 3623 } 3624 3625 /* 3626 * How many filemarks do we need to write if we were to terminate the 3627 * tape session right now? Note that this can be a negative number 3628 */ 3629 3630 static int 3631 samarkswanted(struct cam_periph *periph) 3632 { 3633 int markswanted; 3634 struct sa_softc *softc; 3635 3636 softc = (struct sa_softc *)periph->softc; 3637 markswanted = 0; 3638 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3639 markswanted++; 3640 if (softc->quirks & SA_QUIRK_2FM) 3641 markswanted++; 3642 } 3643 markswanted -= softc->filemarks; 3644 return (markswanted); 3645 } 3646 3647 static int 3648 sacheckeod(struct cam_periph *periph) 3649 { 3650 int error; 3651 int markswanted; 3652 3653 markswanted = samarkswanted(periph); 3654 3655 if (markswanted > 0) { 3656 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3657 } else { 3658 error = 0; 3659 } 3660 return (error); 3661 } 3662 3663 static int 3664 saerror(union ccb *ccb, uint32_t cflgs, uint32_t sflgs) 3665 { 3666 static const char *toobig = 3667 "%d-byte tape record bigger than supplied buffer\n"; 3668 struct cam_periph *periph; 3669 struct sa_softc *softc; 3670 struct ccb_scsiio *csio; 3671 struct scsi_sense_data *sense; 3672 uint64_t resid = 0; 3673 int64_t info = 0; 3674 cam_status status; 3675 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3676 int sense_len; 3677 uint8_t stream_bits; 3678 3679 periph = xpt_path_periph(ccb->ccb_h.path); 3680 softc = (struct sa_softc *)periph->softc; 3681 csio = &ccb->csio; 3682 sense = &csio->sense_data; 3683 sense_len = csio->sense_len - csio->sense_resid; 3684 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3685 &asc, &ascq, /*show_errors*/ 1); 3686 if (asc != -1 && ascq != -1) 3687 aqvalid = 1; 3688 else 3689 aqvalid = 0; 3690 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3691 stream_valid = 1; 3692 else 3693 stream_valid = 0; 3694 error = 0; 3695 3696 status = csio->ccb_h.status & CAM_STATUS_MASK; 3697 3698 /* 3699 * Calculate/latch up, any residuals... We do this in a funny 2-step 3700 * so we can print stuff here if we have CAM_DEBUG enabled for this 3701 * unit. 3702 */ 3703 if (status == CAM_SCSI_STATUS_ERROR) { 3704 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3705 &info) == 0) { 3706 if ((softc->flags & SA_FLAG_FIXED) != 0) 3707 resid *= softc->media_blksize; 3708 } else { 3709 resid = csio->dxfer_len; 3710 info = resid; 3711 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3712 if (softc->media_blksize) 3713 info /= softc->media_blksize; 3714 } 3715 } 3716 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3717 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3718 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3719 sizeof (struct scsi_sense_data)); 3720 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3721 (int) csio->cdb_len); 3722 softc->last_io_resid = resid; 3723 softc->last_resid_was_io = 1; 3724 } else { 3725 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3726 sizeof (struct scsi_sense_data)); 3727 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3728 (int) csio->cdb_len); 3729 softc->last_ctl_resid = resid; 3730 softc->last_resid_was_io = 0; 3731 } 3732 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3733 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3734 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3735 sense_key, asc, ascq, status, 3736 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3737 csio->dxfer_len)); 3738 } else { 3739 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3740 ("Cam Status 0x%x\n", status)); 3741 } 3742 3743 switch (status) { 3744 case CAM_REQ_CMP: 3745 return (0); 3746 case CAM_SCSI_STATUS_ERROR: 3747 /* 3748 * If a read/write command, we handle it here. 3749 */ 3750 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3751 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3752 break; 3753 } 3754 /* 3755 * If this was just EOM/EOP, Filemark, Setmark, ILI or 3756 * PEW detected on a non read/write command, we assume 3757 * it's not an error and propagate the residual and return. 3758 */ 3759 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5) 3760 || (ascq == 0x07))) 3761 || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3762 csio->resid = resid; 3763 QFRLS(ccb); 3764 return (0); 3765 } 3766 /* 3767 * Otherwise, we let the common code handle this. 3768 */ 3769 return (cam_periph_error(ccb, cflgs, sflgs)); 3770 3771 /* 3772 * XXX: To Be Fixed 3773 * We cannot depend upon CAM honoring retry counts for these. 3774 */ 3775 case CAM_SCSI_BUS_RESET: 3776 case CAM_BDR_SENT: 3777 if (ccb->ccb_h.retry_count <= 0) { 3778 return (EIO); 3779 } 3780 /* FALLTHROUGH */ 3781 default: 3782 return (cam_periph_error(ccb, cflgs, sflgs)); 3783 } 3784 3785 /* 3786 * Handle filemark, end of tape, mismatched record sizes.... 3787 * From this point out, we're only handling read/write cases. 3788 * Handle writes && reads differently. 3789 */ 3790 3791 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3792 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3793 csio->resid = resid; 3794 error = ENOSPC; 3795 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3796 softc->flags |= SA_FLAG_EOM_PENDING; 3797 /* 3798 * Grotesque as it seems, the few times 3799 * I've actually seen a non-zero resid, 3800 * the tape drive actually lied and had 3801 * written all the data!. 3802 */ 3803 csio->resid = 0; 3804 } 3805 } else { 3806 csio->resid = resid; 3807 if (sense_key == SSD_KEY_BLANK_CHECK) { 3808 if (softc->quirks & SA_QUIRK_1FM) { 3809 error = 0; 3810 softc->flags |= SA_FLAG_EOM_PENDING; 3811 } else { 3812 error = EIO; 3813 } 3814 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3815 if (softc->flags & SA_FLAG_FIXED) { 3816 error = -1; 3817 softc->flags |= SA_FLAG_EOF_PENDING; 3818 } 3819 /* 3820 * Unconditionally, if we detected a filemark on a read, 3821 * mark that we've run moved a file ahead. 3822 */ 3823 if (softc->fileno != (daddr_t) -1) { 3824 softc->fileno++; 3825 softc->blkno = 0; 3826 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3827 } 3828 } 3829 } 3830 3831 /* 3832 * Incorrect Length usually applies to read, but can apply to writes. 3833 */ 3834 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3835 if (info < 0) { 3836 xpt_print(csio->ccb_h.path, toobig, 3837 csio->dxfer_len - info); 3838 csio->resid = csio->dxfer_len; 3839 error = EIO; 3840 } else { 3841 csio->resid = resid; 3842 if (softc->flags & SA_FLAG_FIXED) { 3843 softc->flags |= SA_FLAG_EIO_PENDING; 3844 } 3845 /* 3846 * Bump the block number if we hadn't seen a filemark. 3847 * Do this independent of errors (we've moved anyway). 3848 */ 3849 if ((stream_valid == 0) || 3850 (stream_bits & SSD_FILEMARK) == 0) { 3851 if (softc->blkno != (daddr_t) -1) { 3852 softc->blkno++; 3853 csio->ccb_h.ccb_pflags |= 3854 SA_POSITION_UPDATED; 3855 } 3856 } 3857 } 3858 } 3859 3860 if (error <= 0) { 3861 /* 3862 * Unfreeze the queue if frozen as we're not returning anything 3863 * to our waiters that would indicate an I/O error has occurred 3864 * (yet). 3865 */ 3866 QFRLS(ccb); 3867 error = 0; 3868 } 3869 return (error); 3870 } 3871 3872 static int 3873 sagetparams(struct cam_periph *periph, sa_params params_to_get, 3874 uint32_t *blocksize, uint8_t *density, uint32_t *numblocks, 3875 int *buff_mode, uint8_t *write_protect, uint8_t *speed, 3876 int *comp_supported, int *comp_enabled, uint32_t *comp_algorithm, 3877 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3878 int dp_size, int prot_changeable) 3879 { 3880 union ccb *ccb; 3881 void *mode_buffer; 3882 struct scsi_mode_header_6 *mode_hdr; 3883 struct scsi_mode_blk_desc *mode_blk; 3884 int mode_buffer_len; 3885 struct sa_softc *softc; 3886 uint8_t cpage; 3887 int error; 3888 cam_status status; 3889 3890 softc = (struct sa_softc *)periph->softc; 3891 ccb = cam_periph_getccb(periph, 1); 3892 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3893 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3894 else 3895 cpage = SA_DATA_COMPRESSION_PAGE; 3896 3897 retry: 3898 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3899 3900 if (params_to_get & SA_PARAM_COMPRESSION) { 3901 if (softc->quirks & SA_QUIRK_NOCOMP) { 3902 *comp_supported = FALSE; 3903 params_to_get &= ~SA_PARAM_COMPRESSION; 3904 } else 3905 mode_buffer_len += sizeof (sa_comp_t); 3906 } 3907 3908 /* XXX Fix M_NOWAIT */ 3909 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3910 if (mode_buffer == NULL) { 3911 xpt_release_ccb(ccb); 3912 return (ENOMEM); 3913 } 3914 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3915 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3916 3917 /* it is safe to retry this */ 3918 scsi_mode_sense(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3919 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3920 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3921 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 3922 3923 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3924 softc->device_stats); 3925 3926 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3927 3928 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3929 /* 3930 * Hmm. Let's see if we can try another page... 3931 * If we've already done that, give up on compression 3932 * for this device and remember this for the future 3933 * and attempt the request without asking for compression 3934 * info. 3935 */ 3936 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3937 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3938 goto retry; 3939 } 3940 softc->quirks |= SA_QUIRK_NOCOMP; 3941 free(mode_buffer, M_SCSISA); 3942 goto retry; 3943 } else if (status == CAM_SCSI_STATUS_ERROR) { 3944 /* Tell the user about the fatal error. */ 3945 scsi_sense_print(&ccb->csio); 3946 goto sagetparamsexit; 3947 } 3948 3949 /* 3950 * If the user only wants the compression information, and 3951 * the device doesn't send back the block descriptor, it's 3952 * no big deal. If the user wants more than just 3953 * compression, though, and the device doesn't pass back the 3954 * block descriptor, we need to send another mode sense to 3955 * get the block descriptor. 3956 */ 3957 if ((mode_hdr->blk_desc_len == 0) && 3958 (params_to_get & SA_PARAM_COMPRESSION) && 3959 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3960 /* 3961 * Decrease the mode buffer length by the size of 3962 * the compression page, to make sure the data 3963 * there doesn't get overwritten. 3964 */ 3965 mode_buffer_len -= sizeof (sa_comp_t); 3966 3967 /* 3968 * Now move the compression page that we presumably 3969 * got back down the memory chunk a little bit so 3970 * it doesn't get spammed. 3971 */ 3972 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3973 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3974 3975 /* 3976 * Now, we issue another mode sense and just ask 3977 * for the block descriptor, etc. 3978 */ 3979 3980 scsi_mode_sense(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3981 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3982 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3983 softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 3984 3985 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3986 softc->device_stats); 3987 3988 if (error != 0) 3989 goto sagetparamsexit; 3990 } 3991 3992 if (params_to_get & SA_PARAM_BLOCKSIZE) 3993 *blocksize = scsi_3btoul(mode_blk->blklen); 3994 3995 if (params_to_get & SA_PARAM_NUMBLOCKS) 3996 *numblocks = scsi_3btoul(mode_blk->nblocks); 3997 3998 if (params_to_get & SA_PARAM_BUFF_MODE) 3999 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 4000 4001 if (params_to_get & SA_PARAM_DENSITY) 4002 *density = mode_blk->density; 4003 4004 if (params_to_get & SA_PARAM_WP) 4005 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 4006 4007 if (params_to_get & SA_PARAM_SPEED) 4008 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 4009 4010 if (params_to_get & SA_PARAM_COMPRESSION) { 4011 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 4012 if (cpage == SA_DATA_COMPRESSION_PAGE) { 4013 struct scsi_data_compression_page *cp = &ntcs->dcomp; 4014 *comp_supported = 4015 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 4016 *comp_enabled = 4017 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 4018 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 4019 } else { 4020 struct scsi_dev_conf_page *cp = &ntcs->dconf; 4021 /* 4022 * We don't really know whether this device supports 4023 * Data Compression if the algorithm field is 4024 * zero. Just say we do. 4025 */ 4026 *comp_supported = TRUE; 4027 *comp_enabled = 4028 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 4029 *comp_algorithm = cp->sel_comp_alg; 4030 } 4031 if (tcs != NULL) 4032 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 4033 } 4034 4035 if ((params_to_get & SA_PARAM_DENSITY_EXT) 4036 && (softc->scsi_rev >= SCSI_REV_SPC)) { 4037 int i; 4038 4039 for (i = 0; i < SA_DENSITY_TYPES; i++) { 4040 scsi_report_density_support(&ccb->csio, 4041 /*retries*/ 1, 4042 /*cbfcnp*/ NULL, 4043 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4044 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 4045 /*medium_type*/ softc->density_type_bits[i] & 4046 SRDS_MEDIUM_TYPE, 4047 /*data_ptr*/ softc->density_info[i], 4048 /*length*/ sizeof(softc->density_info[i]), 4049 /*sense_len*/ SSD_FULL_SIZE, 4050 /*timeout*/ 4051 softc->timeout_info[SA_TIMEOUT_REP_DENSITY]); 4052 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 4053 softc->device_stats); 4054 status = ccb->ccb_h.status & CAM_STATUS_MASK; 4055 4056 /* 4057 * Some tape drives won't support this command at 4058 * all, but hopefully we'll minimize that with the 4059 * check for SPC or greater support above. If they 4060 * don't support the default report (neither the 4061 * MEDIA or MEDIUM_TYPE bits set), then there is 4062 * really no point in continuing on to look for 4063 * other reports. 4064 */ 4065 if ((error != 0) 4066 || (status != CAM_REQ_CMP)) { 4067 error = 0; 4068 softc->density_info_valid[i] = 0; 4069 if (softc->density_type_bits[i] == 0) 4070 break; 4071 else 4072 continue; 4073 } 4074 softc->density_info_valid[i] = ccb->csio.dxfer_len - 4075 ccb->csio.resid; 4076 } 4077 } 4078 4079 /* 4080 * Get logical block protection parameters if the drive supports it. 4081 */ 4082 if ((params_to_get & SA_PARAM_LBP) 4083 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 4084 struct scsi_mode_header_10 *mode10_hdr; 4085 struct scsi_control_data_prot_subpage *dp_page; 4086 struct scsi_mode_sense_10 *cdb; 4087 struct sa_prot_state *prot; 4088 int dp_len, returned_len; 4089 4090 if (dp_size == 0) 4091 dp_size = sizeof(*dp_page); 4092 4093 dp_len = sizeof(*mode10_hdr) + dp_size; 4094 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4095 if (mode10_hdr == NULL) { 4096 error = ENOMEM; 4097 goto sagetparamsexit; 4098 } 4099 4100 scsi_mode_sense_len(&ccb->csio, 4101 /*retries*/ 5, 4102 /*cbfcnp*/ NULL, 4103 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4104 /*dbd*/ TRUE, 4105 /*page_code*/ (prot_changeable == 0) ? 4106 SMS_PAGE_CTRL_CURRENT : 4107 SMS_PAGE_CTRL_CHANGEABLE, 4108 /*page*/ SMS_CONTROL_MODE_PAGE, 4109 /*param_buf*/ (uint8_t *)mode10_hdr, 4110 /*param_len*/ dp_len, 4111 /*minimum_cmd_size*/ 10, 4112 /*sense_len*/ SSD_FULL_SIZE, 4113 /*timeout*/ 4114 softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 4115 /* 4116 * XXX KDM we need to be able to set the subpage in the 4117 * fill function. 4118 */ 4119 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 4120 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 4121 4122 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 4123 softc->device_stats); 4124 if (error != 0) { 4125 free(mode10_hdr, M_SCSISA); 4126 goto sagetparamsexit; 4127 } 4128 4129 status = ccb->ccb_h.status & CAM_STATUS_MASK; 4130 if (status != CAM_REQ_CMP) { 4131 error = EINVAL; 4132 free(mode10_hdr, M_SCSISA); 4133 goto sagetparamsexit; 4134 } 4135 4136 /* 4137 * The returned data length at least has to be long enough 4138 * for us to look at length in the mode page header. 4139 */ 4140 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 4141 if (returned_len < sizeof(mode10_hdr->data_length)) { 4142 error = EINVAL; 4143 free(mode10_hdr, M_SCSISA); 4144 goto sagetparamsexit; 4145 } 4146 4147 returned_len = min(returned_len, 4148 sizeof(mode10_hdr->data_length) + 4149 scsi_2btoul(mode10_hdr->data_length)); 4150 4151 dp_page = (struct scsi_control_data_prot_subpage *) 4152 &mode10_hdr[1]; 4153 4154 /* 4155 * We also have to have enough data to include the prot_bits 4156 * in the subpage. 4157 */ 4158 if (returned_len < (sizeof(*mode10_hdr) + 4159 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 4160 + sizeof(dp_page->prot_bits))) { 4161 error = EINVAL; 4162 free(mode10_hdr, M_SCSISA); 4163 goto sagetparamsexit; 4164 } 4165 4166 prot = &softc->prot_info.cur_prot_state; 4167 prot->prot_method = dp_page->prot_method; 4168 prot->pi_length = dp_page->pi_length & 4169 SA_CTRL_DP_PI_LENGTH_MASK; 4170 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 4171 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 4172 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 4173 prot->initialized = 1; 4174 4175 if (prot_page != NULL) 4176 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 4177 sizeof(*dp_page))); 4178 4179 free(mode10_hdr, M_SCSISA); 4180 } 4181 4182 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4183 int idx; 4184 char *xyz = mode_buffer; 4185 xpt_print_path(periph->path); 4186 printf("Mode Sense Data="); 4187 for (idx = 0; idx < mode_buffer_len; idx++) 4188 printf(" 0x%02x", xyz[idx] & 0xff); 4189 printf("\n"); 4190 } 4191 4192 sagetparamsexit: 4193 4194 xpt_release_ccb(ccb); 4195 free(mode_buffer, M_SCSISA); 4196 return (error); 4197 } 4198 4199 /* 4200 * Set protection information to the pending protection information stored 4201 * in the softc. 4202 */ 4203 static int 4204 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 4205 { 4206 struct sa_softc *softc; 4207 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 4208 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 4209 union ccb *ccb; 4210 uint8_t current_speed; 4211 size_t dp_size, dp_page_length; 4212 int dp_len, buff_mode; 4213 int error; 4214 4215 softc = (struct sa_softc *)periph->softc; 4216 mode10_hdr = NULL; 4217 mode10_changeable = NULL; 4218 ccb = NULL; 4219 4220 /* 4221 * Start off with the size set to the actual length of the page 4222 * that we have defined. 4223 */ 4224 dp_size = sizeof(*dp_changeable); 4225 dp_page_length = dp_size - 4226 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 4227 4228 retry_length: 4229 4230 dp_len = sizeof(*mode10_changeable) + dp_size; 4231 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4232 if (mode10_changeable == NULL) { 4233 error = ENOMEM; 4234 goto bailout; 4235 } 4236 4237 dp_changeable = 4238 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 4239 4240 /* 4241 * First get the data protection page changeable parameters mask. 4242 * We need to know which parameters the drive supports changing. 4243 * We also need to know what the drive claims that its page length 4244 * is. The reason is that IBM drives in particular are very picky 4245 * about the page length. They want it (the length set in the 4246 * page structure itself) to be 28 bytes, and they want the 4247 * parameter list length specified in the mode select header to be 4248 * 40 bytes. So, to work with IBM drives as well as any other tape 4249 * drive, find out what the drive claims the page length is, and 4250 * make sure that we match that. 4251 */ 4252 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4253 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4254 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 4255 if (error != 0) 4256 goto bailout; 4257 4258 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 4259 dp_page_length = scsi_2btoul(dp_changeable->length); 4260 dp_size = dp_page_length + 4261 __offsetof(struct scsi_control_data_prot_subpage, 4262 prot_method); 4263 free(mode10_changeable, M_SCSISA); 4264 mode10_changeable = NULL; 4265 goto retry_length; 4266 } 4267 4268 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4269 if (mode10_hdr == NULL) { 4270 error = ENOMEM; 4271 goto bailout; 4272 } 4273 4274 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 4275 4276 /* 4277 * Now grab the actual current settings in the page. 4278 */ 4279 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4280 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4281 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 4282 if (error != 0) 4283 goto bailout; 4284 4285 /* These two fields need to be 0 for MODE SELECT */ 4286 scsi_ulto2b(0, mode10_hdr->data_length); 4287 mode10_hdr->medium_type = 0; 4288 /* We are not including a block descriptor */ 4289 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 4290 4291 mode10_hdr->dev_spec = current_speed; 4292 /* if set, set single-initiator buffering mode */ 4293 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4294 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4295 } 4296 4297 /* 4298 * For each field, make sure that the drive allows changing it 4299 * before bringing in the user's setting. 4300 */ 4301 if (dp_changeable->prot_method != 0) 4302 dp_page->prot_method = new_prot->prot_method; 4303 4304 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 4305 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 4306 dp_page->pi_length |= (new_prot->pi_length & 4307 SA_CTRL_DP_PI_LENGTH_MASK); 4308 } 4309 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 4310 if (new_prot->lbp_w) 4311 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 4312 else 4313 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 4314 } 4315 4316 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 4317 if (new_prot->lbp_r) 4318 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 4319 else 4320 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 4321 } 4322 4323 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 4324 if (new_prot->rbdp) 4325 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 4326 else 4327 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 4328 } 4329 4330 ccb = cam_periph_getccb(periph, 1); 4331 4332 scsi_mode_select_len(&ccb->csio, 4333 /*retries*/ 5, 4334 /*cbfcnp*/ NULL, 4335 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4336 /*scsi_page_fmt*/ TRUE, 4337 /*save_pages*/ FALSE, 4338 /*param_buf*/ (uint8_t *)mode10_hdr, 4339 /*param_len*/ dp_len, 4340 /*minimum_cmd_size*/ 10, 4341 /*sense_len*/ SSD_FULL_SIZE, 4342 /*timeout*/ 4343 softc->timeout_info[SA_TIMEOUT_MODE_SELECT]); 4344 4345 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4346 if (error != 0) 4347 goto bailout; 4348 4349 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4350 error = EINVAL; 4351 goto bailout; 4352 } 4353 4354 /* 4355 * The operation was successful. We could just copy the settings 4356 * the user requested, but just in case the drive ignored some of 4357 * our settings, let's ask for status again. 4358 */ 4359 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4360 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4361 NULL, NULL, dp_page, dp_size, 0); 4362 4363 bailout: 4364 if (ccb != NULL) 4365 xpt_release_ccb(ccb); 4366 free(mode10_hdr, M_SCSISA); 4367 free(mode10_changeable, M_SCSISA); 4368 return (error); 4369 } 4370 4371 /* 4372 * The purpose of this function is to set one of four different parameters 4373 * for a tape drive: 4374 * - blocksize 4375 * - density 4376 * - compression / compression algorithm 4377 * - buffering mode 4378 * 4379 * The assumption is that this will be called from saioctl(), and therefore 4380 * from a process context. Thus the waiting malloc calls below. If that 4381 * assumption ever changes, the malloc calls should be changed to be 4382 * NOWAIT mallocs. 4383 * 4384 * Any or all of the four parameters may be set when this function is 4385 * called. It should handle setting more than one parameter at once. 4386 */ 4387 static int 4388 sasetparams(struct cam_periph *periph, sa_params params_to_set, 4389 uint32_t blocksize, uint8_t density, uint32_t calg, 4390 uint32_t sense_flags) 4391 { 4392 struct sa_softc *softc; 4393 uint32_t current_blocksize; 4394 uint32_t current_calg; 4395 uint8_t current_density; 4396 uint8_t current_speed; 4397 int comp_enabled, comp_supported; 4398 void *mode_buffer; 4399 int mode_buffer_len; 4400 struct scsi_mode_header_6 *mode_hdr; 4401 struct scsi_mode_blk_desc *mode_blk; 4402 sa_comp_t *ccomp, *cpage; 4403 int buff_mode; 4404 union ccb *ccb = NULL; 4405 int error; 4406 4407 softc = (struct sa_softc *)periph->softc; 4408 4409 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4410 if (ccomp == NULL) 4411 return (ENOMEM); 4412 4413 /* 4414 * Since it doesn't make sense to set the number of blocks, or 4415 * write protection, we won't try to get the current value. We 4416 * always want to get the blocksize, so we can set it back to the 4417 * proper value. 4418 */ 4419 error = sagetparams(periph, 4420 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4421 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4422 ¤t_speed, &comp_supported, &comp_enabled, 4423 ¤t_calg, ccomp, NULL, 0, 0); 4424 4425 if (error != 0) { 4426 free(ccomp, M_SCSISA); 4427 return (error); 4428 } 4429 4430 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4431 if (params_to_set & SA_PARAM_COMPRESSION) 4432 mode_buffer_len += sizeof (sa_comp_t); 4433 4434 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4435 if (mode_buffer == NULL) { 4436 free(ccomp, M_SCSISA); 4437 return (ENOMEM); 4438 } 4439 4440 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4441 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4442 4443 ccb = cam_periph_getccb(periph, 1); 4444 4445 retry: 4446 4447 if (params_to_set & SA_PARAM_COMPRESSION) { 4448 if (mode_blk) { 4449 cpage = (sa_comp_t *)&mode_blk[1]; 4450 } else { 4451 cpage = (sa_comp_t *)&mode_hdr[1]; 4452 } 4453 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4454 cpage->hdr.pagecode &= ~0x80; 4455 } else 4456 cpage = NULL; 4457 4458 /* 4459 * If the caller wants us to set the blocksize, use the one they 4460 * pass in. Otherwise, use the blocksize we got back from the 4461 * mode select above. 4462 */ 4463 if (mode_blk) { 4464 if (params_to_set & SA_PARAM_BLOCKSIZE) 4465 scsi_ulto3b(blocksize, mode_blk->blklen); 4466 else 4467 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4468 4469 /* 4470 * Set density if requested, else preserve old density. 4471 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4472 * devices, else density we've latched up in our softc. 4473 */ 4474 if (params_to_set & SA_PARAM_DENSITY) { 4475 mode_blk->density = density; 4476 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4477 mode_blk->density = SCSI_SAME_DENSITY; 4478 } else { 4479 mode_blk->density = softc->media_density; 4480 } 4481 } 4482 4483 /* 4484 * For mode selects, these two fields must be zero. 4485 */ 4486 mode_hdr->data_length = 0; 4487 mode_hdr->medium_type = 0; 4488 4489 /* set the speed to the current value */ 4490 mode_hdr->dev_spec = current_speed; 4491 4492 /* if set, set single-initiator buffering mode */ 4493 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4494 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4495 } 4496 4497 if (mode_blk) 4498 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4499 else 4500 mode_hdr->blk_desc_len = 0; 4501 4502 /* 4503 * First, if the user wants us to set the compression algorithm or 4504 * just turn compression on, check to make sure that this drive 4505 * supports compression. 4506 */ 4507 if (params_to_set & SA_PARAM_COMPRESSION) { 4508 /* 4509 * If the compression algorithm is 0, disable compression. 4510 * If the compression algorithm is non-zero, enable 4511 * compression and set the compression type to the 4512 * specified compression algorithm, unless the algorithm is 4513 * MT_COMP_ENABLE. In that case, we look at the 4514 * compression algorithm that is currently set and if it is 4515 * non-zero, we leave it as-is. If it is zero, and we have 4516 * saved a compression algorithm from a time when 4517 * compression was enabled before, set the compression to 4518 * the saved value. 4519 */ 4520 switch (ccomp->hdr.pagecode & ~0x80) { 4521 case SA_DEVICE_CONFIGURATION_PAGE: 4522 { 4523 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4524 if (calg == 0) { 4525 dcp->sel_comp_alg = SA_COMP_NONE; 4526 break; 4527 } 4528 if (calg != MT_COMP_ENABLE) { 4529 dcp->sel_comp_alg = calg; 4530 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4531 softc->saved_comp_algorithm != 0) { 4532 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4533 } 4534 break; 4535 } 4536 case SA_DATA_COMPRESSION_PAGE: 4537 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4538 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4539 if (calg == 0) { 4540 /* 4541 * Disable compression, but leave the 4542 * decompression and the capability bit 4543 * alone. 4544 */ 4545 dcp->dce_and_dcc = SA_DCP_DCC; 4546 dcp->dde_and_red |= SA_DCP_DDE; 4547 break; 4548 } 4549 /* enable compression && decompression */ 4550 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4551 dcp->dde_and_red |= SA_DCP_DDE; 4552 /* 4553 * If there, use compression algorithm from caller. 4554 * Otherwise, if there's a saved compression algorithm 4555 * and there is no current algorithm, use the saved 4556 * algorithm. Else parrot back what we got and hope 4557 * for the best. 4558 */ 4559 if (calg != MT_COMP_ENABLE) { 4560 scsi_ulto4b(calg, dcp->comp_algorithm); 4561 scsi_ulto4b(calg, dcp->decomp_algorithm); 4562 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4563 softc->saved_comp_algorithm != 0) { 4564 scsi_ulto4b(softc->saved_comp_algorithm, 4565 dcp->comp_algorithm); 4566 scsi_ulto4b(softc->saved_comp_algorithm, 4567 dcp->decomp_algorithm); 4568 } 4569 break; 4570 } 4571 /* 4572 * Compression does not appear to be supported- 4573 * at least via the DATA COMPRESSION page. It 4574 * would be too much to ask us to believe that 4575 * the page itself is supported, but incorrectly 4576 * reports an ability to manipulate data compression, 4577 * so we'll assume that this device doesn't support 4578 * compression. We can just fall through for that. 4579 */ 4580 /* FALLTHROUGH */ 4581 default: 4582 /* 4583 * The drive doesn't seem to support compression, 4584 * so turn off the set compression bit. 4585 */ 4586 params_to_set &= ~SA_PARAM_COMPRESSION; 4587 xpt_print(periph->path, 4588 "device does not seem to support compression\n"); 4589 4590 /* 4591 * If that was the only thing the user wanted us to set, 4592 * clean up allocated resources and return with 4593 * 'operation not supported'. 4594 */ 4595 if (params_to_set == SA_PARAM_NONE) { 4596 free(mode_buffer, M_SCSISA); 4597 xpt_release_ccb(ccb); 4598 return (ENODEV); 4599 } 4600 4601 /* 4602 * That wasn't the only thing the user wanted us to set. 4603 * So, decrease the stated mode buffer length by the 4604 * size of the compression mode page. 4605 */ 4606 mode_buffer_len -= sizeof(sa_comp_t); 4607 } 4608 } 4609 4610 /* It is safe to retry this operation */ 4611 scsi_mode_select(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 4612 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4613 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 4614 softc->timeout_info[SA_TIMEOUT_MODE_SELECT]); 4615 4616 error = cam_periph_runccb(ccb, saerror, 0, 4617 sense_flags, softc->device_stats); 4618 4619 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4620 int idx; 4621 char *xyz = mode_buffer; 4622 xpt_print_path(periph->path); 4623 printf("Err%d, Mode Select Data=", error); 4624 for (idx = 0; idx < mode_buffer_len; idx++) 4625 printf(" 0x%02x", xyz[idx] & 0xff); 4626 printf("\n"); 4627 } 4628 4629 if (error) { 4630 /* 4631 * If we can, try without setting density/blocksize. 4632 */ 4633 if (mode_blk) { 4634 if ((params_to_set & 4635 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4636 mode_blk = NULL; 4637 goto retry; 4638 } 4639 } else { 4640 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4641 cpage = (sa_comp_t *)&mode_blk[1]; 4642 } 4643 4644 /* 4645 * If we were setting the blocksize, and that failed, we 4646 * want to set it to its original value. If we weren't 4647 * setting the blocksize, we don't want to change it. 4648 */ 4649 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4650 4651 /* 4652 * Set density if requested, else preserve old density. 4653 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4654 * devices, else density we've latched up in our softc. 4655 */ 4656 if (params_to_set & SA_PARAM_DENSITY) { 4657 mode_blk->density = current_density; 4658 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4659 mode_blk->density = SCSI_SAME_DENSITY; 4660 } else { 4661 mode_blk->density = softc->media_density; 4662 } 4663 4664 if (params_to_set & SA_PARAM_COMPRESSION) 4665 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4666 4667 /* 4668 * The retry count is the only CCB field that might have been 4669 * changed that we care about, so reset it back to 1. 4670 */ 4671 ccb->ccb_h.retry_count = 1; 4672 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4673 softc->device_stats); 4674 } 4675 4676 xpt_release_ccb(ccb); 4677 4678 if (ccomp != NULL) 4679 free(ccomp, M_SCSISA); 4680 4681 if (params_to_set & SA_PARAM_COMPRESSION) { 4682 if (error) { 4683 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4684 /* 4685 * Even if we get an error setting compression, 4686 * do not say that we don't support it. We could 4687 * have been wrong, or it may be media specific. 4688 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4689 */ 4690 softc->saved_comp_algorithm = softc->comp_algorithm; 4691 softc->comp_algorithm = 0; 4692 } else { 4693 softc->flags |= SA_FLAG_COMP_ENABLED; 4694 softc->comp_algorithm = calg; 4695 } 4696 } 4697 4698 free(mode_buffer, M_SCSISA); 4699 return (error); 4700 } 4701 4702 static int 4703 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4704 struct mtextget *g) 4705 { 4706 int indent, error; 4707 char tmpstr[80]; 4708 struct sa_softc *softc; 4709 int tmpint; 4710 uint32_t maxio_tmp; 4711 struct ccb_getdev cgd; 4712 4713 softc = (struct sa_softc *)periph->softc; 4714 4715 error = 0; 4716 4717 error = sagetparams_common(dev, periph); 4718 if (error) 4719 goto extget_bailout; 4720 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4721 sagetpos(periph); 4722 4723 indent = 0; 4724 SASBADDNODE(sb, indent, mtextget); 4725 /* 4726 * Basic CAM peripheral information. 4727 */ 4728 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4729 strlen(periph->periph_name) + 1); 4730 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4731 memset(&cgd, 0, sizeof(cgd)); 4732 xpt_setup_ccb(&cgd.ccb_h, 4733 periph->path, 4734 CAM_PRIORITY_NORMAL); 4735 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4736 xpt_action((union ccb *)&cgd); 4737 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4738 g->status = MT_EXT_GET_ERROR; 4739 snprintf(g->error_str, sizeof(g->error_str), 4740 "Error %#x returned for XPT_GDEV_TYPE CCB", 4741 cgd.ccb_h.status); 4742 goto extget_bailout; 4743 } 4744 4745 cam_strvis(tmpstr, cgd.inq_data.vendor, 4746 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4747 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4748 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4749 4750 cam_strvis(tmpstr, cgd.inq_data.product, 4751 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4752 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4753 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4754 4755 cam_strvis(tmpstr, cgd.inq_data.revision, 4756 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4757 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4758 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4759 4760 if (cgd.serial_num_len > 0) { 4761 char *tmpstr2; 4762 size_t ts2_len; 4763 int ts2_malloc; 4764 4765 ts2_len = 0; 4766 4767 if (cgd.serial_num_len > sizeof(tmpstr)) { 4768 ts2_len = cgd.serial_num_len + 1; 4769 ts2_malloc = 1; 4770 tmpstr2 = malloc(ts2_len, M_SCSISA, M_NOWAIT | M_ZERO); 4771 /* 4772 * The 80 characters allocated on the stack above 4773 * will handle the vast majority of serial numbers. 4774 * If we run into one that is larger than that, and 4775 * we can't malloc the length without blocking, 4776 * bail out with an out of memory error. 4777 */ 4778 if (tmpstr2 == NULL) { 4779 error = ENOMEM; 4780 goto extget_bailout; 4781 } 4782 } else { 4783 ts2_len = sizeof(tmpstr); 4784 ts2_malloc = 0; 4785 tmpstr2 = tmpstr; 4786 } 4787 4788 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4789 ts2_len); 4790 4791 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4792 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4793 if (ts2_malloc != 0) 4794 free(tmpstr2, M_SCSISA); 4795 } else { 4796 /* 4797 * We return a serial_num element in any case, but it will 4798 * be empty if the device has no serial number. 4799 */ 4800 tmpstr[0] = '\0'; 4801 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4802 (ssize_t)0, "Serial Number"); 4803 } 4804 4805 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4806 "Maximum I/O size allowed by driver and controller"); 4807 4808 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4809 "Maximum I/O size reported by controller"); 4810 4811 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4812 "Maximum block size supported by tape drive and media"); 4813 4814 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4815 "Minimum block size supported by tape drive and media"); 4816 4817 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4818 "Block granularity supported by tape drive and media"); 4819 4820 maxio_tmp = min(softc->max_blk, softc->maxio); 4821 4822 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4823 "Maximum possible I/O size"); 4824 4825 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4826 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4827 4828 /* 4829 * XXX KDM include SIM, bus, target, LUN? 4830 */ 4831 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4832 tmpint = 0; 4833 else 4834 tmpint = 1; 4835 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4836 "Set to 1 if compression is supported, 0 if not"); 4837 if (softc->flags & SA_FLAG_COMP_ENABLED) 4838 tmpint = 1; 4839 else 4840 tmpint = 0; 4841 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4842 "Set to 1 if compression is enabled, 0 if not"); 4843 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4844 compression_algorithm, "Numeric compression algorithm"); 4845 4846 safillprot(softc, &indent, sb); 4847 4848 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4849 media_blocksize, "Block size reported by drive or set by user"); 4850 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4851 calculated_fileno, "Calculated file number, -1 if unknown"); 4852 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4853 calculated_rel_blkno, "Calculated block number relative to file, " 4854 "set to -1 if unknown"); 4855 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4856 reported_fileno, "File number reported by drive, -1 if unknown"); 4857 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4858 reported_blkno, "Block number relative to BOP/BOT reported by " 4859 "drive, -1 if unknown"); 4860 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4861 partition, "Current partition number, 0 is the default"); 4862 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4863 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4864 "not, -1 if unknown"); 4865 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4866 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4867 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4868 "Set to 1 if drive is past programmable early warning, 0 if not, " 4869 "-1 if unknown"); 4870 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4871 residual, "Residual for the last I/O"); 4872 /* 4873 * XXX KDM should we send a string with the current driver 4874 * status already decoded instead of a numeric value? 4875 */ 4876 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4877 "Current state of the driver"); 4878 4879 safilldensitysb(softc, &indent, sb); 4880 4881 SASBENDNODE(sb, indent, mtextget); 4882 4883 extget_bailout: 4884 4885 return (error); 4886 } 4887 4888 static int 4889 saparamget(struct sa_softc *softc, struct sbuf *sb) 4890 { 4891 int indent; 4892 4893 indent = 0; 4894 SASBADDNODE(sb, indent, mtparamget); 4895 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4896 "Suppress an error on underlength variable reads"); 4897 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4898 "Return an error to warn that end of tape is approaching"); 4899 safillprot(softc, &indent, sb); 4900 SASBENDNODE(sb, indent, mtparamget); 4901 4902 return (0); 4903 } 4904 4905 static void 4906 saprevent(struct cam_periph *periph, int action) 4907 { 4908 struct sa_softc *softc; 4909 union ccb *ccb; 4910 int error, sf; 4911 4912 softc = (struct sa_softc *)periph->softc; 4913 4914 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4915 return; 4916 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4917 return; 4918 4919 /* 4920 * We can be quiet about illegal requests. 4921 */ 4922 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4923 sf = 0; 4924 } else 4925 sf = SF_QUIET_IR; 4926 4927 ccb = cam_periph_getccb(periph, 1); 4928 4929 /* It is safe to retry this operation */ 4930 scsi_prevent(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, action, 4931 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_PREVENT]); 4932 4933 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4934 if (error == 0) { 4935 if (action == PR_ALLOW) 4936 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4937 else 4938 softc->flags |= SA_FLAG_TAPE_LOCKED; 4939 } 4940 4941 xpt_release_ccb(ccb); 4942 } 4943 4944 static int 4945 sarewind(struct cam_periph *periph) 4946 { 4947 union ccb *ccb; 4948 struct sa_softc *softc; 4949 int error; 4950 4951 softc = (struct sa_softc *)periph->softc; 4952 4953 ccb = cam_periph_getccb(periph, 1); 4954 4955 /* It is safe to retry this operation */ 4956 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 4957 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_REWIND]); 4958 4959 softc->dsreg = MTIO_DSREG_REW; 4960 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4961 softc->dsreg = MTIO_DSREG_REST; 4962 4963 xpt_release_ccb(ccb); 4964 if (error == 0) { 4965 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4966 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4967 } else { 4968 softc->fileno = softc->blkno = (daddr_t) -1; 4969 softc->partition = (daddr_t) -1; 4970 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4971 } 4972 return (error); 4973 } 4974 4975 static int 4976 saspace(struct cam_periph *periph, int count, scsi_space_code code) 4977 { 4978 union ccb *ccb; 4979 struct sa_softc *softc; 4980 int error; 4981 4982 softc = (struct sa_softc *)periph->softc; 4983 4984 ccb = cam_periph_getccb(periph, 1); 4985 4986 /* This cannot be retried */ 4987 4988 scsi_space(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, code, count, 4989 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_SPACE]); 4990 4991 /* 4992 * Clear residual because we will be using it. 4993 */ 4994 softc->last_ctl_resid = 0; 4995 4996 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4997 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4998 softc->dsreg = MTIO_DSREG_REST; 4999 5000 xpt_release_ccb(ccb); 5001 5002 /* 5003 * If a spacing operation has failed, we need to invalidate 5004 * this mount. 5005 * 5006 * If the spacing operation was setmarks or to end of recorded data, 5007 * we no longer know our relative position. 5008 * 5009 * If the spacing operations was spacing files in reverse, we 5010 * take account of the residual, but still check against less 5011 * than zero- if we've gone negative, we must have hit BOT. 5012 * 5013 * If the spacing operations was spacing records in reverse and 5014 * we have a residual, we've either hit BOT or hit a filemark. 5015 * In the former case, we know our new record number (0). In 5016 * the latter case, we have absolutely no idea what the real 5017 * record number is- we've stopped between the end of the last 5018 * record in the previous file and the filemark that stopped 5019 * our spacing backwards. 5020 */ 5021 if (error) { 5022 softc->fileno = softc->blkno = (daddr_t) -1; 5023 softc->rep_blkno = softc->partition = (daddr_t) -1; 5024 softc->rep_fileno = (daddr_t) -1; 5025 } else if (code == SS_SETMARKS || code == SS_EOD) { 5026 softc->fileno = softc->blkno = (daddr_t) -1; 5027 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 5028 softc->fileno += (count - softc->last_ctl_resid); 5029 if (softc->fileno < 0) /* we must of hit BOT */ 5030 softc->fileno = 0; 5031 softc->blkno = 0; 5032 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 5033 softc->blkno += (count - softc->last_ctl_resid); 5034 if (count < 0) { 5035 if (softc->last_ctl_resid || softc->blkno < 0) { 5036 if (softc->fileno == 0) { 5037 softc->blkno = 0; 5038 } else { 5039 softc->blkno = (daddr_t) -1; 5040 } 5041 } 5042 } 5043 } 5044 if (error == 0) 5045 sagetpos(periph); 5046 5047 return (error); 5048 } 5049 5050 static int 5051 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 5052 { 5053 union ccb *ccb; 5054 struct sa_softc *softc; 5055 int error, nwm = 0; 5056 5057 softc = (struct sa_softc *)periph->softc; 5058 if (softc->open_rdonly) 5059 return (EBADF); 5060 5061 ccb = cam_periph_getccb(periph, 1); 5062 /* 5063 * Clear residual because we will be using it. 5064 */ 5065 softc->last_ctl_resid = 0; 5066 5067 softc->dsreg = MTIO_DSREG_FMK; 5068 /* this *must* not be retried */ 5069 scsi_write_filemarks(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, 5070 immed, setmarks, nmarks, SSD_FULL_SIZE, 5071 softc->timeout_info[SA_TIMEOUT_WRITE_FILEMARKS]); 5072 softc->dsreg = MTIO_DSREG_REST; 5073 5074 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5075 5076 if (error == 0 && nmarks) { 5077 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5078 nwm = nmarks - softc->last_ctl_resid; 5079 softc->filemarks += nwm; 5080 } 5081 5082 xpt_release_ccb(ccb); 5083 5084 /* 5085 * Update relative positions (if we're doing that). 5086 */ 5087 if (error) { 5088 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 5089 } else if (softc->fileno != (daddr_t) -1) { 5090 softc->fileno += nwm; 5091 softc->blkno = 0; 5092 } 5093 5094 /* 5095 * Ask the tape drive for position information. 5096 */ 5097 sagetpos(periph); 5098 5099 /* 5100 * If we got valid position information, since we just wrote a file 5101 * mark, we know we're at the file mark and block 0 after that 5102 * filemark. 5103 */ 5104 if (softc->rep_fileno != (daddr_t) -1) { 5105 softc->fileno = softc->rep_fileno; 5106 softc->blkno = 0; 5107 } 5108 5109 return (error); 5110 } 5111 5112 static int 5113 sagetpos(struct cam_periph *periph) 5114 { 5115 union ccb *ccb; 5116 struct scsi_tape_position_long_data long_pos; 5117 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5118 int error; 5119 5120 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 5121 softc->rep_fileno = (daddr_t) -1; 5122 softc->rep_blkno = (daddr_t) -1; 5123 softc->bop = softc->eop = softc->bpew = -1; 5124 return (EOPNOTSUPP); 5125 } 5126 5127 bzero(&long_pos, sizeof(long_pos)); 5128 5129 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 5130 scsi_read_position_10(&ccb->csio, 5131 /*retries*/ 1, 5132 /*cbfcnp*/ NULL, 5133 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5134 /*service_action*/ SA_RPOS_LONG_FORM, 5135 /*data_ptr*/ (uint8_t *)&long_pos, 5136 /*length*/ sizeof(long_pos), 5137 /*sense_len*/ SSD_FULL_SIZE, 5138 /*timeout*/ 5139 softc->timeout_info[SA_TIMEOUT_READ_POSITION]); 5140 5141 softc->dsreg = MTIO_DSREG_RBSY; 5142 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 5143 softc->device_stats); 5144 softc->dsreg = MTIO_DSREG_REST; 5145 5146 if (error == 0) { 5147 if (long_pos.flags & SA_RPOS_LONG_MPU) { 5148 /* 5149 * If the drive doesn't know what file mark it is 5150 * on, our calculated filemark isn't going to be 5151 * accurate either. 5152 */ 5153 softc->fileno = (daddr_t) -1; 5154 softc->rep_fileno = (daddr_t) -1; 5155 } else { 5156 softc->fileno = softc->rep_fileno = 5157 scsi_8btou64(long_pos.logical_file_num); 5158 } 5159 5160 if (long_pos.flags & SA_RPOS_LONG_LONU) { 5161 softc->partition = (daddr_t) -1; 5162 softc->rep_blkno = (daddr_t) -1; 5163 /* 5164 * If the tape drive doesn't know its block 5165 * position, we can't claim to know it either. 5166 */ 5167 softc->blkno = (daddr_t) -1; 5168 } else { 5169 softc->partition = scsi_4btoul(long_pos.partition); 5170 softc->rep_blkno = 5171 scsi_8btou64(long_pos.logical_object_num); 5172 } 5173 if (long_pos.flags & SA_RPOS_LONG_BOP) 5174 softc->bop = 1; 5175 else 5176 softc->bop = 0; 5177 5178 if (long_pos.flags & SA_RPOS_LONG_EOP) 5179 softc->eop = 1; 5180 else 5181 softc->eop = 0; 5182 5183 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 5184 || (softc->set_pews_status != 0)) { 5185 softc->bpew = 1; 5186 if (softc->set_pews_status > 0) 5187 softc->set_pews_status--; 5188 } else 5189 softc->bpew = 0; 5190 } else if (error == EINVAL) { 5191 /* 5192 * If this drive returned an invalid-request type error, 5193 * then it likely doesn't support the long form report. 5194 */ 5195 softc->quirks |= SA_QUIRK_NO_LONG_POS; 5196 } 5197 5198 if (error != 0) { 5199 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5200 softc->partition = (daddr_t) -1; 5201 softc->bop = softc->eop = softc->bpew = -1; 5202 } 5203 5204 xpt_release_ccb(ccb); 5205 5206 return (error); 5207 } 5208 5209 static int 5210 sardpos(struct cam_periph *periph, int hard, uint32_t *blkptr) 5211 { 5212 struct scsi_tape_position_data loc; 5213 union ccb *ccb; 5214 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5215 int error; 5216 5217 /* 5218 * We try and flush any buffered writes here if we were writing 5219 * and we're trying to get hardware block position. It eats 5220 * up performance substantially, but I'm wary of drive firmware. 5221 * 5222 * I think that *logical* block position is probably okay- 5223 * but hardware block position might have to wait for data 5224 * to hit media to be valid. Caveat Emptor. 5225 */ 5226 5227 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 5228 error = sawritefilemarks(periph, 0, 0, 0); 5229 if (error && error != EACCES) 5230 return (error); 5231 } 5232 5233 ccb = cam_periph_getccb(periph, 1); 5234 scsi_read_position(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 5235 hard, &loc, SSD_FULL_SIZE, 5236 softc->timeout_info[SA_TIMEOUT_READ_POSITION]); 5237 softc->dsreg = MTIO_DSREG_RBSY; 5238 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5239 softc->dsreg = MTIO_DSREG_REST; 5240 5241 if (error == 0) { 5242 if (loc.flags & SA_RPOS_UNCERTAIN) { 5243 error = EINVAL; /* nothing is certain */ 5244 } else { 5245 *blkptr = scsi_4btoul(loc.firstblk); 5246 } 5247 } 5248 5249 xpt_release_ccb(ccb); 5250 return (error); 5251 } 5252 5253 static int 5254 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 5255 { 5256 union ccb *ccb; 5257 struct sa_softc *softc; 5258 int locate16; 5259 int immed, cp; 5260 int error; 5261 5262 /* 5263 * We used to try and flush any buffered writes here. 5264 * Now we push this onto user applications to either 5265 * flush the pending writes themselves (via a zero count 5266 * WRITE FILEMARKS command) or they can trust their tape 5267 * drive to do this correctly for them. 5268 */ 5269 5270 softc = (struct sa_softc *)periph->softc; 5271 ccb = cam_periph_getccb(periph, 1); 5272 5273 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 5274 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 5275 5276 /* 5277 * Determine whether we have to use LOCATE or LOCATE16. The hard 5278 * bit is only possible with LOCATE, but the new ioctls do not 5279 * allow setting that bit. So we can't get into the situation of 5280 * having the hard bit set with a block address that is larger than 5281 * 32-bits. 5282 */ 5283 if (hard != 0) 5284 locate16 = 0; 5285 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 5286 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 5287 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 5288 locate16 = 1; 5289 else 5290 locate16 = 0; 5291 5292 if (locate16 != 0) { 5293 scsi_locate_16(&ccb->csio, 5294 /*retries*/ 1, 5295 /*cbfcnp*/ NULL, 5296 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5297 /*immed*/ immed, 5298 /*cp*/ cp, 5299 /*dest_type*/ locate_info->dest_type, 5300 /*bam*/ locate_info->block_address_mode, 5301 /*partition*/ locate_info->partition, 5302 /*logical_id*/ locate_info->logical_id, 5303 /*sense_len*/ SSD_FULL_SIZE, 5304 /*timeout*/ 5305 softc->timeout_info[SA_TIMEOUT_LOCATE]); 5306 } else { 5307 scsi_locate_10(&ccb->csio, 5308 /*retries*/ 1, 5309 /*cbfcnp*/ NULL, 5310 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5311 /*immed*/ immed, 5312 /*cp*/ cp, 5313 /*hard*/ hard, 5314 /*partition*/ locate_info->partition, 5315 /*block_address*/ locate_info->logical_id, 5316 /*sense_len*/ SSD_FULL_SIZE, 5317 /*timeout*/ 5318 softc->timeout_info[SA_TIMEOUT_LOCATE]); 5319 } 5320 5321 softc->dsreg = MTIO_DSREG_POS; 5322 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5323 softc->dsreg = MTIO_DSREG_REST; 5324 xpt_release_ccb(ccb); 5325 5326 /* 5327 * We assume the calculated file and block numbers are unknown 5328 * unless we have enough information to populate them. 5329 */ 5330 softc->fileno = softc->blkno = (daddr_t) -1; 5331 5332 /* 5333 * If the user requested changing the partition and the request 5334 * succeeded, note the partition. 5335 */ 5336 if ((error == 0) 5337 && (cp != 0)) 5338 softc->partition = locate_info->partition; 5339 else 5340 softc->partition = (daddr_t) -1; 5341 5342 if (error == 0) { 5343 switch (locate_info->dest_type) { 5344 case MT_LOCATE_DEST_FILE: 5345 /* 5346 * This is the only case where we can reliably 5347 * calculate the file and block numbers. 5348 */ 5349 softc->fileno = locate_info->logical_id; 5350 softc->blkno = 0; 5351 break; 5352 case MT_LOCATE_DEST_OBJECT: 5353 case MT_LOCATE_DEST_SET: 5354 case MT_LOCATE_DEST_EOD: 5355 default: 5356 break; 5357 } 5358 } 5359 5360 /* 5361 * Ask the drive for current position information. 5362 */ 5363 sagetpos(periph); 5364 5365 return (error); 5366 } 5367 5368 static int 5369 saretension(struct cam_periph *periph) 5370 { 5371 union ccb *ccb; 5372 struct sa_softc *softc; 5373 int error; 5374 5375 softc = (struct sa_softc *)periph->softc; 5376 5377 ccb = cam_periph_getccb(periph, 1); 5378 5379 /* It is safe to retry this operation */ 5380 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5381 FALSE, TRUE, TRUE, SSD_FULL_SIZE, 5382 softc->timeout_info[SA_TIMEOUT_LOAD]); 5383 5384 softc->dsreg = MTIO_DSREG_TEN; 5385 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5386 softc->dsreg = MTIO_DSREG_REST; 5387 5388 xpt_release_ccb(ccb); 5389 if (error == 0) { 5390 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5391 sagetpos(periph); 5392 } else 5393 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5394 return (error); 5395 } 5396 5397 static int 5398 sareservereleaseunit(struct cam_periph *periph, int reserve) 5399 { 5400 union ccb *ccb; 5401 struct sa_softc *softc; 5402 int error; 5403 5404 softc = (struct sa_softc *)periph->softc; 5405 ccb = cam_periph_getccb(periph, 1); 5406 5407 /* It is safe to retry this operation */ 5408 scsi_reserve_release_unit(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 5409 FALSE, 0, SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_RESERVE], 5410 reserve); 5411 softc->dsreg = MTIO_DSREG_RBSY; 5412 error = cam_periph_runccb(ccb, saerror, 0, 5413 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5414 softc->dsreg = MTIO_DSREG_REST; 5415 xpt_release_ccb(ccb); 5416 5417 /* 5418 * If the error was Illegal Request, then the device doesn't support 5419 * RESERVE/RELEASE. This is not an error. 5420 */ 5421 if (error == EINVAL) { 5422 error = 0; 5423 } 5424 5425 return (error); 5426 } 5427 5428 static int 5429 saloadunload(struct cam_periph *periph, int load) 5430 { 5431 union ccb *ccb; 5432 struct sa_softc *softc; 5433 int error; 5434 5435 softc = (struct sa_softc *)periph->softc; 5436 5437 ccb = cam_periph_getccb(periph, 1); 5438 5439 /* It is safe to retry this operation */ 5440 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5441 FALSE, FALSE, load, SSD_FULL_SIZE, 5442 softc->timeout_info[SA_TIMEOUT_LOAD]); 5443 5444 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5445 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5446 softc->dsreg = MTIO_DSREG_REST; 5447 xpt_release_ccb(ccb); 5448 5449 if (error || load == 0) { 5450 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5451 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5452 } else if (error == 0) { 5453 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5454 sagetpos(periph); 5455 } 5456 return (error); 5457 } 5458 5459 static int 5460 saerase(struct cam_periph *periph, int longerase) 5461 { 5462 5463 union ccb *ccb; 5464 struct sa_softc *softc; 5465 int error; 5466 5467 softc = (struct sa_softc *)periph->softc; 5468 if (softc->open_rdonly) 5469 return (EBADF); 5470 5471 ccb = cam_periph_getccb(periph, 1); 5472 5473 scsi_erase(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5474 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_ERASE]); 5475 5476 softc->dsreg = MTIO_DSREG_ZER; 5477 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5478 softc->dsreg = MTIO_DSREG_REST; 5479 5480 xpt_release_ccb(ccb); 5481 return (error); 5482 } 5483 5484 /* 5485 * Fill an sbuf with density data in XML format. This particular macro 5486 * works for multi-byte integer fields. 5487 * 5488 * Note that 1 byte fields aren't supported here. The reason is that the 5489 * compiler does not evaluate the sizeof(), and assumes that any of the 5490 * sizes are possible for a given field. So passing in a multi-byte 5491 * field will result in a warning that the assignment makes an integer 5492 * from a pointer without a cast, if there is an assignment in the 1 byte 5493 * case. 5494 */ 5495 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5496 len_to_go, cur_offset, desc){ \ 5497 size_t cur_field_len; \ 5498 \ 5499 cur_field_len = sizeof(dens_data->field); \ 5500 if (desc_remain < cur_field_len) { \ 5501 len_to_go -= desc_remain; \ 5502 cur_offset += desc_remain; \ 5503 continue; \ 5504 } \ 5505 len_to_go -= cur_field_len; \ 5506 cur_offset += cur_field_len; \ 5507 desc_remain -= cur_field_len; \ 5508 \ 5509 switch (sizeof(dens_data->field)) { \ 5510 case 1: \ 5511 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5512 "field width for SAFILLDENSFIELD")); \ 5513 break; \ 5514 case 2: \ 5515 SASBADDUINTDESC(sb, indent, \ 5516 scsi_2btoul(dens_data->field), %u, field, desc); \ 5517 break; \ 5518 case 3: \ 5519 SASBADDUINTDESC(sb, indent, \ 5520 scsi_3btoul(dens_data->field), %u, field, desc); \ 5521 break; \ 5522 case 4: \ 5523 SASBADDUINTDESC(sb, indent, \ 5524 scsi_4btoul(dens_data->field), %u, field, desc); \ 5525 break; \ 5526 case 8: \ 5527 SASBADDUINTDESC(sb, indent, \ 5528 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5529 field, desc); \ 5530 break; \ 5531 default: \ 5532 break; \ 5533 } \ 5534 }; 5535 /* 5536 * Fill an sbuf with density data in XML format. This particular macro 5537 * works for strings. 5538 */ 5539 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5540 len_to_go, cur_offset, desc){ \ 5541 size_t cur_field_len; \ 5542 char tmpstr[32]; \ 5543 \ 5544 cur_field_len = sizeof(dens_data->field); \ 5545 if (desc_remain < cur_field_len) { \ 5546 len_to_go -= desc_remain; \ 5547 cur_offset += desc_remain; \ 5548 continue; \ 5549 } \ 5550 len_to_go -= cur_field_len; \ 5551 cur_offset += cur_field_len; \ 5552 desc_remain -= cur_field_len; \ 5553 \ 5554 cam_strvis(tmpstr, dens_data->field, \ 5555 sizeof(dens_data->field), sizeof(tmpstr)); \ 5556 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5557 strlen(tmpstr) + 1, desc); \ 5558 }; 5559 5560 /* 5561 * Fill an sbuf with density data descriptors. 5562 */ 5563 static void 5564 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5565 int is_density) 5566 { 5567 struct scsi_density_hdr *hdr; 5568 uint32_t hdr_len; 5569 int len_to_go, cur_offset; 5570 int length_offset; 5571 int num_reports, need_close; 5572 5573 /* 5574 * We need at least the header length. Note that this isn't an 5575 * error, not all tape drives will have every data type. 5576 */ 5577 if (buf_len < sizeof(*hdr)) 5578 goto bailout; 5579 5580 hdr = (struct scsi_density_hdr *)buf; 5581 hdr_len = scsi_2btoul(hdr->length); 5582 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5583 if (is_density) { 5584 length_offset = __offsetof(struct scsi_density_data, 5585 bits_per_mm); 5586 } else { 5587 length_offset = __offsetof(struct scsi_medium_type_data, 5588 num_density_codes); 5589 } 5590 cur_offset = sizeof(*hdr); 5591 5592 num_reports = 0; 5593 need_close = 0; 5594 5595 while (len_to_go > length_offset) { 5596 struct scsi_density_data *dens_data; 5597 struct scsi_medium_type_data *type_data; 5598 int desc_remain; 5599 size_t cur_field_len; 5600 5601 dens_data = NULL; 5602 type_data = NULL; 5603 5604 if (is_density) { 5605 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5606 if (dens_data->byte2 & SDD_DLV) 5607 desc_remain = scsi_2btoul(dens_data->length); 5608 else 5609 desc_remain = SDD_DEFAULT_LENGTH - 5610 length_offset; 5611 } else { 5612 type_data = (struct scsi_medium_type_data *) 5613 &buf[cur_offset]; 5614 desc_remain = scsi_2btoul(type_data->length); 5615 } 5616 5617 len_to_go -= length_offset; 5618 desc_remain = min(desc_remain, len_to_go); 5619 cur_offset += length_offset; 5620 5621 if (need_close != 0) { 5622 SASBENDNODE(sb, *indent, density_entry); 5623 } 5624 5625 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5626 num_reports++; 5627 need_close = 1; 5628 5629 if (is_density) { 5630 SASBADDUINTDESC(sb, *indent, 5631 dens_data->primary_density_code, %u, 5632 primary_density_code, "Primary Density Code"); 5633 SASBADDUINTDESC(sb, *indent, 5634 dens_data->secondary_density_code, %u, 5635 secondary_density_code, "Secondary Density Code"); 5636 SASBADDUINTDESC(sb, *indent, 5637 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5638 "Density Flags"); 5639 5640 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5641 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5642 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5643 desc_remain, len_to_go, cur_offset, "Media width"); 5644 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5645 desc_remain, len_to_go, cur_offset, 5646 "Number of Tracks"); 5647 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5648 desc_remain, len_to_go, cur_offset, "Capacity"); 5649 5650 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5651 desc_remain, len_to_go, cur_offset, 5652 "Assigning Organization"); 5653 5654 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5655 desc_remain, len_to_go, cur_offset, "Density Name"); 5656 5657 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5658 desc_remain, len_to_go, cur_offset, "Description"); 5659 } else { 5660 int i; 5661 5662 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5663 %u, medium_type, "Medium Type"); 5664 5665 cur_field_len = 5666 __offsetof(struct scsi_medium_type_data, 5667 media_width) - 5668 __offsetof(struct scsi_medium_type_data, 5669 num_density_codes); 5670 5671 if (desc_remain < cur_field_len) { 5672 len_to_go -= desc_remain; 5673 cur_offset += desc_remain; 5674 continue; 5675 } 5676 len_to_go -= cur_field_len; 5677 cur_offset += cur_field_len; 5678 desc_remain -= cur_field_len; 5679 5680 SASBADDINTDESC(sb, *indent, 5681 type_data->num_density_codes, %d, 5682 num_density_codes, "Number of Density Codes"); 5683 SASBADDNODE(sb, *indent, density_code_list); 5684 for (i = 0; i < type_data->num_density_codes; 5685 i++) { 5686 SASBADDUINTDESC(sb, *indent, 5687 type_data->primary_density_codes[i], %u, 5688 density_code, "Density Code"); 5689 } 5690 SASBENDNODE(sb, *indent, density_code_list); 5691 5692 SAFILLDENSSB(type_data, sb, *indent, media_width, 5693 desc_remain, len_to_go, cur_offset, 5694 "Media width"); 5695 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5696 desc_remain, len_to_go, cur_offset, 5697 "Medium length"); 5698 5699 /* 5700 * Account for the two reserved bytes. 5701 */ 5702 cur_field_len = sizeof(type_data->reserved2); 5703 if (desc_remain < cur_field_len) { 5704 len_to_go -= desc_remain; 5705 cur_offset += desc_remain; 5706 continue; 5707 } 5708 len_to_go -= cur_field_len; 5709 cur_offset += cur_field_len; 5710 desc_remain -= cur_field_len; 5711 5712 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5713 desc_remain, len_to_go, cur_offset, 5714 "Assigning Organization"); 5715 SAFILLDENSSBSTR(type_data, sb, *indent, 5716 medium_type_name, desc_remain, len_to_go, 5717 cur_offset, "Medium type name"); 5718 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5719 desc_remain, len_to_go, cur_offset, "Description"); 5720 } 5721 } 5722 if (need_close != 0) { 5723 SASBENDNODE(sb, *indent, density_entry); 5724 } 5725 5726 bailout: 5727 return; 5728 } 5729 5730 /* 5731 * Fill an sbuf with density data information 5732 */ 5733 static void 5734 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5735 { 5736 int i, is_density; 5737 5738 SASBADDNODE(sb, *indent, mtdensity); 5739 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5740 "Current Medium Density"); 5741 is_density = 0; 5742 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5743 int tmpint; 5744 5745 if (softc->density_info_valid[i] == 0) 5746 continue; 5747 5748 SASBADDNODE(sb, *indent, density_report); 5749 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5750 tmpint = 1; 5751 is_density = 0; 5752 } else { 5753 tmpint = 0; 5754 is_density = 1; 5755 } 5756 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5757 "Medium type report"); 5758 5759 if (softc->density_type_bits[i] & SRDS_MEDIA) 5760 tmpint = 1; 5761 else 5762 tmpint = 0; 5763 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5764 "Media report"); 5765 5766 safilldenstypesb(sb, indent, softc->density_info[i], 5767 softc->density_info_valid[i], is_density); 5768 SASBENDNODE(sb, *indent, density_report); 5769 } 5770 SASBENDNODE(sb, *indent, mtdensity); 5771 } 5772 5773 /* 5774 * Given a completed REPORT SUPPORTED OPERATION CODES command with timeout 5775 * descriptors, go through the descriptors and set the sa(4) driver 5776 * timeouts to the recommended values. 5777 */ 5778 static void 5779 saloadtimeouts(struct sa_softc *softc, union ccb *ccb) 5780 { 5781 uint32_t valid_len, avail_len = 0, used_len = 0; 5782 struct scsi_report_supported_opcodes_all *hdr; 5783 struct scsi_report_supported_opcodes_descr *desc; 5784 uint8_t *buf; 5785 5786 hdr = (struct scsi_report_supported_opcodes_all *)ccb->csio.data_ptr; 5787 valid_len = ccb->csio.dxfer_len - ccb->csio.resid; 5788 5789 if (valid_len < sizeof(*hdr)) 5790 return; 5791 5792 avail_len = scsi_4btoul(hdr->length) + sizeof(hdr->length); 5793 if ((avail_len != 0) 5794 && (avail_len > valid_len)) { 5795 xpt_print(softc->periph->path, "WARNING: available timeout " 5796 "descriptor len %zu > valid len %u\n", avail_len,valid_len); 5797 } 5798 5799 used_len = sizeof(hdr->length); 5800 avail_len = MIN(avail_len, valid_len - sizeof(*hdr)); 5801 buf = ccb->csio.data_ptr; 5802 while ((avail_len - used_len) > sizeof(*desc)) { 5803 struct scsi_report_supported_opcodes_timeout *td; 5804 uint32_t td_len; 5805 uint32_t rec_time; 5806 uint8_t *cur_ptr; 5807 5808 cur_ptr = &buf[used_len]; 5809 desc = (struct scsi_report_supported_opcodes_descr *)cur_ptr; 5810 5811 used_len += sizeof(*desc); 5812 /* If there's no timeout descriptor, keep going */ 5813 if ((desc->flags & RSO_CTDP) == 0) 5814 continue; 5815 5816 /* 5817 * If we don't have enough space to fit a timeout 5818 * descriptor then we're done. 5819 */ 5820 if ((avail_len - used_len) < sizeof(*td)) { 5821 used_len = avail_len; 5822 continue; 5823 } 5824 5825 cur_ptr = &buf[used_len]; 5826 td = (struct scsi_report_supported_opcodes_timeout *)cur_ptr; 5827 td_len = scsi_2btoul(td->length); 5828 td_len += sizeof(td->length); 5829 used_len += td_len; 5830 5831 if (td_len < sizeof(*td)) 5832 continue; 5833 5834 /* 5835 * Use the recommended timeout. The nominal time is the 5836 * time to wait before querying for status. 5837 */ 5838 rec_time = scsi_4btoul(td->recommended_time); 5839 5840 /* 5841 * Our timeouts are set in thousandths of a seconds. 5842 */ 5843 rec_time *= 1000; 5844 5845 switch(desc->opcode) { 5846 case ERASE: 5847 softc->timeout_info[SA_TIMEOUT_ERASE] = rec_time; 5848 break; 5849 case LOAD_UNLOAD: 5850 softc->timeout_info[SA_TIMEOUT_LOAD] = rec_time; 5851 break; 5852 case LOCATE: 5853 case LOCATE_16: 5854 /* 5855 * We are assuming these are the same timeout. 5856 */ 5857 softc->timeout_info[SA_TIMEOUT_LOCATE] = rec_time; 5858 break; 5859 case MODE_SELECT_6: 5860 case MODE_SELECT_10: 5861 /* 5862 * We are assuming these are the same timeout. 5863 */ 5864 softc->timeout_info[SA_TIMEOUT_MODE_SELECT] = rec_time; 5865 break; 5866 case MODE_SENSE_6: 5867 case MODE_SENSE_10: 5868 /* 5869 * We are assuming these are the same timeout. 5870 */ 5871 softc->timeout_info[SA_TIMEOUT_MODE_SENSE] = rec_time; 5872 break; 5873 case PREVENT_ALLOW: 5874 softc->timeout_info[SA_TIMEOUT_PREVENT] = rec_time; 5875 break; 5876 case SA_READ: 5877 softc->timeout_info[SA_TIMEOUT_READ] = rec_time; 5878 break; 5879 case READ_BLOCK_LIMITS: 5880 softc->timeout_info[SA_TIMEOUT_READ_BLOCK_LIMITS] = 5881 rec_time; 5882 break; 5883 case READ_POSITION: 5884 /* 5885 * Note that this may show up multiple times for 5886 * the short form, long form and extended form 5887 * service actions. We're assuming they are all 5888 * the same. 5889 */ 5890 softc->timeout_info[SA_TIMEOUT_READ_POSITION] =rec_time; 5891 break; 5892 case REPORT_DENSITY_SUPPORT: 5893 softc->timeout_info[SA_TIMEOUT_REP_DENSITY] = rec_time; 5894 break; 5895 case RESERVE_UNIT: 5896 case RELEASE_UNIT: 5897 /* We are assuming these are the same timeout.*/ 5898 softc->timeout_info[SA_TIMEOUT_RESERVE] = rec_time; 5899 break; 5900 case REWIND: 5901 softc->timeout_info[SA_TIMEOUT_REWIND] = rec_time; 5902 break; 5903 case SPACE: 5904 softc->timeout_info[SA_TIMEOUT_SPACE] = rec_time; 5905 break; 5906 case TEST_UNIT_READY: 5907 softc->timeout_info[SA_TIMEOUT_TUR] = rec_time; 5908 break; 5909 case SA_WRITE: 5910 softc->timeout_info[SA_TIMEOUT_WRITE] = rec_time; 5911 break; 5912 case WRITE_FILEMARKS: 5913 softc->timeout_info[SA_TIMEOUT_WRITE_FILEMARKS] = 5914 rec_time; 5915 break; 5916 default: 5917 /* 5918 * We have explicit cases for all of the timeouts 5919 * we use. 5920 */ 5921 break; 5922 } 5923 } 5924 } 5925 5926 #endif /* _KERNEL */ 5927 5928 /* 5929 * Read tape block limits command. 5930 */ 5931 void 5932 scsi_read_block_limits(struct ccb_scsiio *csio, uint32_t retries, 5933 void (*cbfcnp)(struct cam_periph *, union ccb *), 5934 uint8_t tag_action, 5935 struct scsi_read_block_limits_data *rlimit_buf, 5936 uint8_t sense_len, uint32_t timeout) 5937 { 5938 struct scsi_read_block_limits *scsi_cmd; 5939 5940 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5941 (uint8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5942 sizeof(*scsi_cmd), timeout); 5943 5944 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5945 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5946 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5947 } 5948 5949 void 5950 scsi_sa_read_write(struct ccb_scsiio *csio, uint32_t retries, 5951 void (*cbfcnp)(struct cam_periph *, union ccb *), 5952 uint8_t tag_action, int readop, int sli, 5953 int fixed, uint32_t length, uint8_t *data_ptr, 5954 uint32_t dxfer_len, uint8_t sense_len, uint32_t timeout) 5955 { 5956 struct scsi_sa_rw *scsi_cmd; 5957 int read; 5958 5959 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5960 5961 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5962 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5963 scsi_cmd->sli_fixed = 0; 5964 if (sli && read) 5965 scsi_cmd->sli_fixed |= SAR_SLI; 5966 if (fixed) 5967 scsi_cmd->sli_fixed |= SARW_FIXED; 5968 scsi_ulto3b(length, scsi_cmd->length); 5969 scsi_cmd->control = 0; 5970 5971 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5972 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5973 tag_action, data_ptr, dxfer_len, sense_len, 5974 sizeof(*scsi_cmd), timeout); 5975 } 5976 5977 void 5978 scsi_load_unload(struct ccb_scsiio *csio, uint32_t retries, 5979 void (*cbfcnp)(struct cam_periph *, union ccb *), 5980 uint8_t tag_action, int immediate, int eot, 5981 int reten, int load, uint8_t sense_len, 5982 uint32_t timeout) 5983 { 5984 struct scsi_load_unload *scsi_cmd; 5985 5986 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5987 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5988 scsi_cmd->opcode = LOAD_UNLOAD; 5989 if (immediate) 5990 scsi_cmd->immediate = SLU_IMMED; 5991 if (eot) 5992 scsi_cmd->eot_reten_load |= SLU_EOT; 5993 if (reten) 5994 scsi_cmd->eot_reten_load |= SLU_RETEN; 5995 if (load) 5996 scsi_cmd->eot_reten_load |= SLU_LOAD; 5997 5998 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5999 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 6000 } 6001 6002 void 6003 scsi_rewind(struct ccb_scsiio *csio, uint32_t retries, 6004 void (*cbfcnp)(struct cam_periph *, union ccb *), 6005 uint8_t tag_action, int immediate, uint8_t sense_len, 6006 uint32_t timeout) 6007 { 6008 struct scsi_rewind *scsi_cmd; 6009 6010 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 6011 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6012 scsi_cmd->opcode = REWIND; 6013 if (immediate) 6014 scsi_cmd->immediate = SREW_IMMED; 6015 6016 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6017 0, sense_len, sizeof(*scsi_cmd), timeout); 6018 } 6019 6020 void 6021 scsi_space(struct ccb_scsiio *csio, uint32_t retries, 6022 void (*cbfcnp)(struct cam_periph *, union ccb *), 6023 uint8_t tag_action, scsi_space_code code, 6024 uint32_t count, uint8_t sense_len, uint32_t timeout) 6025 { 6026 struct scsi_space *scsi_cmd; 6027 6028 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 6029 scsi_cmd->opcode = SPACE; 6030 scsi_cmd->code = code; 6031 scsi_ulto3b(count, scsi_cmd->count); 6032 scsi_cmd->control = 0; 6033 6034 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6035 0, sense_len, sizeof(*scsi_cmd), timeout); 6036 } 6037 6038 void 6039 scsi_write_filemarks(struct ccb_scsiio *csio, uint32_t retries, 6040 void (*cbfcnp)(struct cam_periph *, union ccb *), 6041 uint8_t tag_action, int immediate, int setmark, 6042 uint32_t num_marks, uint8_t sense_len, 6043 uint32_t timeout) 6044 { 6045 struct scsi_write_filemarks *scsi_cmd; 6046 6047 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 6048 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6049 scsi_cmd->opcode = WRITE_FILEMARKS; 6050 if (immediate) 6051 scsi_cmd->byte2 |= SWFMRK_IMMED; 6052 if (setmark) 6053 scsi_cmd->byte2 |= SWFMRK_WSMK; 6054 6055 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 6056 6057 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6058 0, sense_len, sizeof(*scsi_cmd), timeout); 6059 } 6060 6061 /* 6062 * The reserve and release unit commands differ only by their opcodes. 6063 */ 6064 void 6065 scsi_reserve_release_unit(struct ccb_scsiio *csio, uint32_t retries, 6066 void (*cbfcnp)(struct cam_periph *, union ccb *), 6067 uint8_t tag_action, int third_party, 6068 int third_party_id, uint8_t sense_len, 6069 uint32_t timeout, int reserve) 6070 { 6071 struct scsi_reserve_release_unit *scsi_cmd; 6072 6073 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 6074 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6075 6076 if (reserve) 6077 scsi_cmd->opcode = RESERVE_UNIT; 6078 else 6079 scsi_cmd->opcode = RELEASE_UNIT; 6080 6081 if (third_party) { 6082 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 6083 scsi_cmd->lun_thirdparty |= 6084 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 6085 } 6086 6087 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6088 0, sense_len, sizeof(*scsi_cmd), timeout); 6089 } 6090 6091 void 6092 scsi_erase(struct ccb_scsiio *csio, uint32_t retries, 6093 void (*cbfcnp)(struct cam_periph *, union ccb *), 6094 uint8_t tag_action, int immediate, int long_erase, 6095 uint8_t sense_len, uint32_t timeout) 6096 { 6097 struct scsi_erase *scsi_cmd; 6098 6099 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 6100 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6101 6102 scsi_cmd->opcode = ERASE; 6103 6104 if (immediate) 6105 scsi_cmd->lun_imm_long |= SE_IMMED; 6106 6107 if (long_erase) 6108 scsi_cmd->lun_imm_long |= SE_LONG; 6109 6110 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6111 0, sense_len, sizeof(*scsi_cmd), timeout); 6112 } 6113 6114 /* 6115 * Read Tape Position command. 6116 */ 6117 void 6118 scsi_read_position(struct ccb_scsiio *csio, uint32_t retries, 6119 void (*cbfcnp)(struct cam_periph *, union ccb *), 6120 uint8_t tag_action, int hardsoft, 6121 struct scsi_tape_position_data *sbp, 6122 uint8_t sense_len, uint32_t timeout) 6123 { 6124 struct scsi_tape_read_position *scmd; 6125 6126 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 6127 (uint8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 6128 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 6129 bzero(scmd, sizeof(*scmd)); 6130 scmd->opcode = READ_POSITION; 6131 scmd->byte1 = hardsoft; 6132 } 6133 6134 /* 6135 * Read Tape Position command. 6136 */ 6137 void 6138 scsi_read_position_10(struct ccb_scsiio *csio, uint32_t retries, 6139 void (*cbfcnp)(struct cam_periph *, union ccb *), 6140 uint8_t tag_action, int service_action, 6141 uint8_t *data_ptr, uint32_t length, 6142 uint32_t sense_len, uint32_t timeout) 6143 { 6144 struct scsi_tape_read_position *scmd; 6145 6146 cam_fill_csio(csio, 6147 retries, 6148 cbfcnp, 6149 /*flags*/CAM_DIR_IN, 6150 tag_action, 6151 /*data_ptr*/data_ptr, 6152 /*dxfer_len*/length, 6153 sense_len, 6154 sizeof(*scmd), 6155 timeout); 6156 6157 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 6158 bzero(scmd, sizeof(*scmd)); 6159 scmd->opcode = READ_POSITION; 6160 scmd->byte1 = service_action; 6161 /* 6162 * The length is only currently set (as of SSC4r03) if the extended 6163 * form is specified. The other forms have fixed lengths. 6164 */ 6165 if (service_action == SA_RPOS_EXTENDED_FORM) 6166 scsi_ulto2b(length, scmd->length); 6167 } 6168 6169 /* 6170 * Set Tape Position command. 6171 */ 6172 void 6173 scsi_set_position(struct ccb_scsiio *csio, uint32_t retries, 6174 void (*cbfcnp)(struct cam_periph *, union ccb *), 6175 uint8_t tag_action, int hardsoft, uint32_t blkno, 6176 uint8_t sense_len, uint32_t timeout) 6177 { 6178 struct scsi_tape_locate *scmd; 6179 6180 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 6181 (uint8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 6182 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 6183 bzero(scmd, sizeof(*scmd)); 6184 scmd->opcode = LOCATE; 6185 if (hardsoft) 6186 scmd->byte1 |= SA_SPOS_BT; 6187 scsi_ulto4b(blkno, scmd->blkaddr); 6188 } 6189 6190 /* 6191 * XXX KDM figure out how to make a compatibility function. 6192 */ 6193 void 6194 scsi_locate_10(struct ccb_scsiio *csio, uint32_t retries, 6195 void (*cbfcnp)(struct cam_periph *, union ccb *), 6196 uint8_t tag_action, int immed, int cp, int hard, 6197 int64_t partition, uint32_t block_address, 6198 int sense_len, uint32_t timeout) 6199 { 6200 struct scsi_tape_locate *scmd; 6201 6202 cam_fill_csio(csio, 6203 retries, 6204 cbfcnp, 6205 CAM_DIR_NONE, 6206 tag_action, 6207 /*data_ptr*/ NULL, 6208 /*dxfer_len*/ 0, 6209 sense_len, 6210 sizeof(*scmd), 6211 timeout); 6212 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 6213 bzero(scmd, sizeof(*scmd)); 6214 scmd->opcode = LOCATE; 6215 if (immed) 6216 scmd->byte1 |= SA_SPOS_IMMED; 6217 if (cp) 6218 scmd->byte1 |= SA_SPOS_CP; 6219 if (hard) 6220 scmd->byte1 |= SA_SPOS_BT; 6221 scsi_ulto4b(block_address, scmd->blkaddr); 6222 scmd->partition = partition; 6223 } 6224 6225 void 6226 scsi_locate_16(struct ccb_scsiio *csio, uint32_t retries, 6227 void (*cbfcnp)(struct cam_periph *, union ccb *), 6228 uint8_t tag_action, int immed, int cp, uint8_t dest_type, 6229 int bam, int64_t partition, uint64_t logical_id, 6230 int sense_len, uint32_t timeout) 6231 { 6232 6233 struct scsi_locate_16 *scsi_cmd; 6234 6235 cam_fill_csio(csio, 6236 retries, 6237 cbfcnp, 6238 /*flags*/CAM_DIR_NONE, 6239 tag_action, 6240 /*data_ptr*/NULL, 6241 /*dxfer_len*/0, 6242 sense_len, 6243 sizeof(*scsi_cmd), 6244 timeout); 6245 6246 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 6247 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6248 scsi_cmd->opcode = LOCATE_16; 6249 if (immed) 6250 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 6251 if (cp) 6252 scsi_cmd->byte1 |= SA_LC_CP; 6253 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 6254 6255 scsi_cmd->byte2 |= bam; 6256 scsi_cmd->partition = partition; 6257 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 6258 } 6259 6260 void 6261 scsi_report_density_support(struct ccb_scsiio *csio, uint32_t retries, 6262 void (*cbfcnp)(struct cam_periph *, union ccb *), 6263 uint8_t tag_action, int media, int medium_type, 6264 uint8_t *data_ptr, uint32_t length, 6265 uint32_t sense_len, uint32_t timeout) 6266 { 6267 struct scsi_report_density_support *scsi_cmd; 6268 6269 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 6270 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6271 6272 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 6273 if (media != 0) 6274 scsi_cmd->byte1 |= SRDS_MEDIA; 6275 if (medium_type != 0) 6276 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 6277 6278 scsi_ulto2b(length, scsi_cmd->length); 6279 6280 cam_fill_csio(csio, 6281 retries, 6282 cbfcnp, 6283 /*flags*/CAM_DIR_IN, 6284 tag_action, 6285 /*data_ptr*/data_ptr, 6286 /*dxfer_len*/length, 6287 sense_len, 6288 sizeof(*scsi_cmd), 6289 timeout); 6290 } 6291 6292 void 6293 scsi_set_capacity(struct ccb_scsiio *csio, uint32_t retries, 6294 void (*cbfcnp)(struct cam_periph *, union ccb *), 6295 uint8_t tag_action, int byte1, uint32_t proportion, 6296 uint32_t sense_len, uint32_t timeout) 6297 { 6298 struct scsi_set_capacity *scsi_cmd; 6299 6300 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 6301 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6302 6303 scsi_cmd->opcode = SET_CAPACITY; 6304 6305 scsi_cmd->byte1 = byte1; 6306 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 6307 6308 cam_fill_csio(csio, 6309 retries, 6310 cbfcnp, 6311 /*flags*/CAM_DIR_NONE, 6312 tag_action, 6313 /*data_ptr*/NULL, 6314 /*dxfer_len*/0, 6315 sense_len, 6316 sizeof(*scsi_cmd), 6317 timeout); 6318 } 6319 6320 void 6321 scsi_format_medium(struct ccb_scsiio *csio, uint32_t retries, 6322 void (*cbfcnp)(struct cam_periph *, union ccb *), 6323 uint8_t tag_action, int byte1, int byte2, 6324 uint8_t *data_ptr, uint32_t dxfer_len, 6325 uint32_t sense_len, uint32_t timeout) 6326 { 6327 struct scsi_format_medium *scsi_cmd; 6328 6329 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 6330 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6331 6332 scsi_cmd->opcode = FORMAT_MEDIUM; 6333 6334 scsi_cmd->byte1 = byte1; 6335 scsi_cmd->byte2 = byte2; 6336 6337 scsi_ulto2b(dxfer_len, scsi_cmd->length); 6338 6339 cam_fill_csio(csio, 6340 retries, 6341 cbfcnp, 6342 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 6343 tag_action, 6344 /*data_ptr*/ data_ptr, 6345 /*dxfer_len*/ dxfer_len, 6346 sense_len, 6347 sizeof(*scsi_cmd), 6348 timeout); 6349 } 6350 6351 void 6352 scsi_allow_overwrite(struct ccb_scsiio *csio, uint32_t retries, 6353 void (*cbfcnp)(struct cam_periph *, union ccb *), 6354 uint8_t tag_action, int allow_overwrite, int partition, 6355 uint64_t logical_id, uint32_t sense_len, uint32_t timeout) 6356 { 6357 struct scsi_allow_overwrite *scsi_cmd; 6358 6359 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 6360 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6361 6362 scsi_cmd->opcode = ALLOW_OVERWRITE; 6363 6364 scsi_cmd->allow_overwrite = allow_overwrite; 6365 scsi_cmd->partition = partition; 6366 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 6367 6368 cam_fill_csio(csio, 6369 retries, 6370 cbfcnp, 6371 CAM_DIR_NONE, 6372 tag_action, 6373 /*data_ptr*/ NULL, 6374 /*dxfer_len*/ 0, 6375 sense_len, 6376 sizeof(*scsi_cmd), 6377 timeout); 6378 } 6379