1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/queue.h> 37 #ifdef _KERNEL 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #endif 41 #include <sys/types.h> 42 #include <sys/time.h> 43 #include <sys/bio.h> 44 #include <sys/limits.h> 45 #include <sys/malloc.h> 46 #include <sys/mtio.h> 47 #ifdef _KERNEL 48 #include <sys/conf.h> 49 #include <sys/sbuf.h> 50 #include <sys/sysctl.h> 51 #include <sys/taskqueue.h> 52 #endif 53 #include <sys/fcntl.h> 54 #include <sys/devicestat.h> 55 56 #ifndef _KERNEL 57 #include <stdio.h> 58 #include <string.h> 59 #endif 60 61 #include <cam/cam.h> 62 #include <cam/cam_ccb.h> 63 #include <cam/cam_periph.h> 64 #include <cam/cam_xpt_periph.h> 65 #include <cam/cam_debug.h> 66 67 #include <cam/scsi/scsi_all.h> 68 #include <cam/scsi/scsi_message.h> 69 #include <cam/scsi/scsi_sa.h> 70 71 #ifdef _KERNEL 72 73 #include "opt_sa.h" 74 75 #ifndef SA_IO_TIMEOUT 76 #define SA_IO_TIMEOUT 32 77 #endif 78 #ifndef SA_SPACE_TIMEOUT 79 #define SA_SPACE_TIMEOUT 1 * 60 80 #endif 81 #ifndef SA_REWIND_TIMEOUT 82 #define SA_REWIND_TIMEOUT 2 * 60 83 #endif 84 #ifndef SA_ERASE_TIMEOUT 85 #define SA_ERASE_TIMEOUT 4 * 60 86 #endif 87 #ifndef SA_REP_DENSITY_TIMEOUT 88 #define SA_REP_DENSITY_TIMEOUT 1 89 #endif 90 91 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 92 93 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 94 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 95 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 96 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 97 #define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000) 98 99 /* 100 * Additional options that can be set for config: SA_1FM_AT_EOT 101 */ 102 103 #ifndef UNUSED_PARAMETER 104 #define UNUSED_PARAMETER(x) x = x 105 #endif 106 107 #define QFRLS(ccb) \ 108 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 109 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 110 111 /* 112 * Driver states 113 */ 114 115 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 116 117 typedef enum { 118 SA_STATE_NORMAL, SA_STATE_PROBE, SA_STATE_ABNORMAL 119 } sa_state; 120 121 #define ccb_pflags ppriv_field0 122 #define ccb_bp ppriv_ptr1 123 124 /* bits in ccb_pflags */ 125 #define SA_POSITION_UPDATED 0x1 126 127 typedef enum { 128 SA_FLAG_OPEN = 0x00001, 129 SA_FLAG_FIXED = 0x00002, 130 SA_FLAG_TAPE_LOCKED = 0x00004, 131 SA_FLAG_TAPE_MOUNTED = 0x00008, 132 SA_FLAG_TAPE_WP = 0x00010, 133 SA_FLAG_TAPE_WRITTEN = 0x00020, 134 SA_FLAG_EOM_PENDING = 0x00040, 135 SA_FLAG_EIO_PENDING = 0x00080, 136 SA_FLAG_EOF_PENDING = 0x00100, 137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 138 SA_FLAG_EOF_PENDING), 139 SA_FLAG_INVALID = 0x00200, 140 SA_FLAG_COMP_ENABLED = 0x00400, 141 SA_FLAG_COMP_SUPP = 0x00800, 142 SA_FLAG_COMP_UNSUPP = 0x01000, 143 SA_FLAG_TAPE_FROZEN = 0x02000, 144 SA_FLAG_PROTECT_SUPP = 0x04000, 145 146 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 147 SA_FLAG_COMP_UNSUPP), 148 SA_FLAG_SCTX_INIT = 0x08000, 149 SA_FLAG_RSOC_TO_TRY = 0x10000, 150 } sa_flags; 151 152 typedef enum { 153 SA_MODE_REWIND = 0x00, 154 SA_MODE_NOREWIND = 0x01, 155 SA_MODE_OFFLINE = 0x02 156 } sa_mode; 157 158 typedef enum { 159 SA_TIMEOUT_ERASE, 160 SA_TIMEOUT_LOAD, 161 SA_TIMEOUT_LOCATE, 162 SA_TIMEOUT_MODE_SELECT, 163 SA_TIMEOUT_MODE_SENSE, 164 SA_TIMEOUT_PREVENT, 165 SA_TIMEOUT_READ, 166 SA_TIMEOUT_READ_BLOCK_LIMITS, 167 SA_TIMEOUT_READ_POSITION, 168 SA_TIMEOUT_REP_DENSITY, 169 SA_TIMEOUT_RESERVE, 170 SA_TIMEOUT_REWIND, 171 SA_TIMEOUT_SPACE, 172 SA_TIMEOUT_TUR, 173 SA_TIMEOUT_WRITE, 174 SA_TIMEOUT_WRITE_FILEMARKS, 175 SA_TIMEOUT_TYPE_MAX 176 } sa_timeout_types; 177 178 /* 179 * These are the default timeout values that apply to all tape drives. 180 * 181 * We get timeouts from the following places in order of increasing 182 * priority: 183 * 1. Driver default timeouts. (Set in the structure below.) 184 * 2. Timeouts loaded from the drive via REPORT SUPPORTED OPERATION 185 * CODES. (If the drive supports it, SPC-4/LTO-5 and newer should.) 186 * 3. Global loader tunables, used for all sa(4) driver instances on 187 * a machine. 188 * 4. Instance-specific loader tunables, used for say sa5. 189 * 5. On the fly user sysctl changes. 190 * 191 * Each step will overwrite the timeout value set from the one 192 * before, so you go from general to most specific. 193 */ 194 static struct sa_timeout_desc { 195 const char *desc; 196 int value; 197 } sa_default_timeouts[SA_TIMEOUT_TYPE_MAX] = { 198 {"erase", ERASE_TIMEOUT}, 199 {"load", REWIND_TIMEOUT}, 200 {"locate", SPACE_TIMEOUT}, 201 {"mode_select", SCSIOP_TIMEOUT}, 202 {"mode_sense", SCSIOP_TIMEOUT}, 203 {"prevent", SCSIOP_TIMEOUT}, 204 {"read", IO_TIMEOUT}, 205 {"read_block_limits", SCSIOP_TIMEOUT}, 206 {"read_position", SCSIOP_TIMEOUT}, 207 {"report_density", REP_DENSITY_TIMEOUT}, 208 {"reserve", SCSIOP_TIMEOUT}, 209 {"rewind", REWIND_TIMEOUT}, 210 {"space", SPACE_TIMEOUT}, 211 {"tur", SCSIOP_TIMEOUT}, 212 {"write", IO_TIMEOUT}, 213 {"write_filemarks", IO_TIMEOUT}, 214 }; 215 216 typedef enum { 217 SA_PARAM_NONE = 0x000, 218 SA_PARAM_BLOCKSIZE = 0x001, 219 SA_PARAM_DENSITY = 0x002, 220 SA_PARAM_COMPRESSION = 0x004, 221 SA_PARAM_BUFF_MODE = 0x008, 222 SA_PARAM_NUMBLOCKS = 0x010, 223 SA_PARAM_WP = 0x020, 224 SA_PARAM_SPEED = 0x040, 225 SA_PARAM_DENSITY_EXT = 0x080, 226 SA_PARAM_LBP = 0x100, 227 SA_PARAM_ALL = 0x1ff 228 } sa_params; 229 230 typedef enum { 231 SA_QUIRK_NONE = 0x000, 232 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 233 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 234 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 235 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 236 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 237 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 238 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 239 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 240 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 241 } sa_quirks; 242 243 #define SA_QUIRK_BIT_STRING \ 244 "\020" \ 245 "\001NOCOMP" \ 246 "\002FIXED" \ 247 "\003VARIABLE" \ 248 "\0042FM" \ 249 "\0051FM" \ 250 "\006NODREAD" \ 251 "\007NO_MODESEL" \ 252 "\010NO_CPAGE" \ 253 "\011NO_LONG_POS" 254 255 #define SAMODE(z) (dev2unit(z) & 0x3) 256 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 257 258 #define SA_NOT_CTLDEV 0 259 #define SA_CTLDEV 1 260 261 #define SA_ATYPE_R 0 262 #define SA_ATYPE_NR 1 263 #define SA_ATYPE_ER 2 264 #define SA_NUM_ATYPES 3 265 266 #define SAMINOR(ctl, access) \ 267 ((ctl << 4) | (access & 0x3)) 268 269 struct sa_devs { 270 struct cdev *ctl_dev; 271 struct cdev *r_dev; 272 struct cdev *nr_dev; 273 struct cdev *er_dev; 274 }; 275 276 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 277 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 278 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 279 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 280 281 #define SASBADDINT(sb, indent, data, fmt, name) \ 282 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 283 NULL) 284 285 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 286 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 287 desc) 288 289 #define SASBADDUINT(sb, indent, data, fmt, name) \ 290 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 291 NULL) 292 293 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 294 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 295 desc) 296 297 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 298 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 299 NULL) 300 301 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 302 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 303 desc) 304 305 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 306 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 307 308 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 309 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 310 311 #define SASBADDNODE(sb, indent, name) { \ 312 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 313 "node"); \ 314 indent += 2; \ 315 } 316 317 #define SASBADDNODENUM(sb, indent, name, num) { \ 318 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 319 #name, "node", num); \ 320 indent += 2; \ 321 } 322 323 #define SASBENDNODE(sb, indent, name) { \ 324 indent -= 2; \ 325 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 326 } 327 328 #define SA_DENSITY_TYPES 4 329 330 struct sa_prot_state { 331 int initialized; 332 uint32_t prot_method; 333 uint32_t pi_length; 334 uint32_t lbp_w; 335 uint32_t lbp_r; 336 uint32_t rbdp; 337 }; 338 339 struct sa_prot_info { 340 struct sa_prot_state cur_prot_state; 341 struct sa_prot_state pending_prot_state; 342 }; 343 344 /* 345 * A table mapping protection parameters to their types and values. 346 */ 347 struct sa_prot_map { 348 char *name; 349 mt_param_set_type param_type; 350 off_t offset; 351 uint32_t min_val; 352 uint32_t max_val; 353 uint32_t *value; 354 } sa_prot_table[] = { 355 { "prot_method", MT_PARAM_SET_UNSIGNED, 356 __offsetof(struct sa_prot_state, prot_method), 357 /*min_val*/ 0, /*max_val*/ 255, NULL }, 358 { "pi_length", MT_PARAM_SET_UNSIGNED, 359 __offsetof(struct sa_prot_state, pi_length), 360 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 361 { "lbp_w", MT_PARAM_SET_UNSIGNED, 362 __offsetof(struct sa_prot_state, lbp_w), 363 /*min_val*/ 0, /*max_val*/ 1, NULL }, 364 { "lbp_r", MT_PARAM_SET_UNSIGNED, 365 __offsetof(struct sa_prot_state, lbp_r), 366 /*min_val*/ 0, /*max_val*/ 1, NULL }, 367 { "rbdp", MT_PARAM_SET_UNSIGNED, 368 __offsetof(struct sa_prot_state, rbdp), 369 /*min_val*/ 0, /*max_val*/ 1, NULL } 370 }; 371 372 #define SA_NUM_PROT_ENTS nitems(sa_prot_table) 373 374 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 375 && (softc->prot_info.cur_prot_state.initialized != 0) \ 376 && (softc->prot_info.cur_prot_state.prot_method != 0)) 377 378 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 379 380 struct sa_softc { 381 sa_state state; 382 sa_flags flags; 383 sa_quirks quirks; 384 u_int si_flags; 385 struct cam_periph *periph; 386 struct bio_queue_head bio_queue; 387 int queue_count; 388 struct devstat *device_stats; 389 struct sa_devs devs; 390 int open_count; 391 int num_devs_to_destroy; 392 int blk_gran; 393 int blk_mask; 394 int blk_shift; 395 u_int32_t max_blk; 396 u_int32_t min_blk; 397 u_int32_t maxio; 398 u_int32_t cpi_maxio; 399 int allow_io_split; 400 int inject_eom; 401 int set_pews_status; 402 u_int32_t comp_algorithm; 403 u_int32_t saved_comp_algorithm; 404 u_int32_t media_blksize; 405 u_int32_t last_media_blksize; 406 u_int32_t media_numblks; 407 u_int8_t media_density; 408 u_int8_t speed; 409 u_int8_t scsi_rev; 410 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 411 int buffer_mode; 412 int filemarks; 413 int last_resid_was_io; 414 uint8_t density_type_bits[SA_DENSITY_TYPES]; 415 int density_info_valid[SA_DENSITY_TYPES]; 416 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 417 int timeout_info[SA_TIMEOUT_TYPE_MAX]; 418 419 struct sa_prot_info prot_info; 420 421 int sili; 422 int eot_warn; 423 424 /* 425 * Current position information. -1 means that the given value is 426 * unknown. fileno and blkno are always calculated. blkno is 427 * relative to the previous file mark. rep_fileno and rep_blkno 428 * are as reported by the drive, if it supports the long form 429 * report for the READ POSITION command. rep_blkno is relative to 430 * the beginning of the partition. 431 * 432 * bop means that the drive is at the beginning of the partition. 433 * eop means that the drive is between early warning and end of 434 * partition, inside the current partition. 435 * bpew means that the position is in a PEWZ (Programmable Early 436 * Warning Zone) 437 */ 438 daddr_t partition; /* Absolute from BOT */ 439 daddr_t fileno; /* Relative to beginning of partition */ 440 daddr_t blkno; /* Relative to last file mark */ 441 daddr_t rep_blkno; /* Relative to beginning of partition */ 442 daddr_t rep_fileno; /* Relative to beginning of partition */ 443 int bop; /* Beginning of Partition */ 444 int eop; /* End of Partition */ 445 int bpew; /* Beyond Programmable Early Warning */ 446 447 /* 448 * Latched Error Info 449 */ 450 struct { 451 struct scsi_sense_data _last_io_sense; 452 u_int64_t _last_io_resid; 453 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 454 struct scsi_sense_data _last_ctl_sense; 455 u_int64_t _last_ctl_resid; 456 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 457 #define last_io_sense errinfo._last_io_sense 458 #define last_io_resid errinfo._last_io_resid 459 #define last_io_cdb errinfo._last_io_cdb 460 #define last_ctl_sense errinfo._last_ctl_sense 461 #define last_ctl_resid errinfo._last_ctl_resid 462 #define last_ctl_cdb errinfo._last_ctl_cdb 463 } errinfo; 464 /* 465 * Misc other flags/state 466 */ 467 u_int32_t 468 : 29, 469 open_rdonly : 1, /* open read-only */ 470 open_pending_mount : 1, /* open pending mount */ 471 ctrl_mode : 1; /* control device open */ 472 473 struct task sysctl_task; 474 struct sysctl_ctx_list sysctl_ctx; 475 struct sysctl_oid *sysctl_tree; 476 struct sysctl_ctx_list sysctl_timeout_ctx; 477 struct sysctl_oid *sysctl_timeout_tree; 478 }; 479 480 struct sa_quirk_entry { 481 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 482 sa_quirks quirks; /* specific quirk type */ 483 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 484 }; 485 486 static struct sa_quirk_entry sa_quirk_table[] = 487 { 488 { 489 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 490 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 491 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 492 }, 493 { 494 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 495 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 496 }, 497 { 498 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 499 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 500 }, 501 { 502 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 503 "Python*", "*"}, SA_QUIRK_NODREAD, 0 504 }, 505 { 506 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 507 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 508 }, 509 { 510 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 511 "VIPER 2525 25462", "-011"}, 512 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 513 }, 514 { 515 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 516 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 517 }, 518 #if 0 519 { 520 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 521 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 522 }, 523 #endif 524 { 525 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 526 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 527 }, 528 { 529 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 530 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 531 }, 532 { 533 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 534 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 535 }, 536 { 537 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 538 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 539 }, 540 { 541 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 542 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 543 }, 544 { 545 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 546 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 547 }, 548 { /* jreynold@primenet.com */ 549 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 550 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 551 }, 552 { /* mike@sentex.net */ 553 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 554 "STT20000*", "*"}, SA_QUIRK_1FM, 0 555 }, 556 { 557 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 558 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 559 }, 560 { 561 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 562 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 563 }, 564 { 565 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 566 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 567 }, 568 { 569 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 570 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 571 }, 572 { 573 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 574 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 575 }, 576 { 577 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 578 " SLR*", "*"}, SA_QUIRK_1FM, 0 579 }, 580 { 581 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 582 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 583 }, 584 { 585 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 586 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 587 } 588 }; 589 590 static d_open_t saopen; 591 static d_close_t saclose; 592 static d_strategy_t sastrategy; 593 static d_ioctl_t saioctl; 594 static periph_init_t sainit; 595 static periph_ctor_t saregister; 596 static periph_oninv_t saoninvalidate; 597 static periph_dtor_t sacleanup; 598 static periph_start_t sastart; 599 static void saasync(void *callback_arg, u_int32_t code, 600 struct cam_path *path, void *arg); 601 static void sadone(struct cam_periph *periph, 602 union ccb *start_ccb); 603 static int saerror(union ccb *ccb, u_int32_t cam_flags, 604 u_int32_t sense_flags); 605 static int samarkswanted(struct cam_periph *); 606 static int sacheckeod(struct cam_periph *periph); 607 static int sagetparams(struct cam_periph *periph, 608 sa_params params_to_get, 609 u_int32_t *blocksize, u_int8_t *density, 610 u_int32_t *numblocks, int *buff_mode, 611 u_int8_t *write_protect, u_int8_t *speed, 612 int *comp_supported, int *comp_enabled, 613 u_int32_t *comp_algorithm, 614 sa_comp_t *comp_page, 615 struct scsi_control_data_prot_subpage 616 *prot_page, int dp_size, 617 int prot_changeable); 618 static int sasetprot(struct cam_periph *periph, 619 struct sa_prot_state *new_prot); 620 static int sasetparams(struct cam_periph *periph, 621 sa_params params_to_set, 622 u_int32_t blocksize, u_int8_t density, 623 u_int32_t comp_algorithm, 624 u_int32_t sense_flags); 625 static int sasetsili(struct cam_periph *periph, 626 struct mtparamset *ps, int num_params); 627 static int saseteotwarn(struct cam_periph *periph, 628 struct mtparamset *ps, int num_params); 629 static void safillprot(struct sa_softc *softc, int *indent, 630 struct sbuf *sb); 631 static void sapopulateprots(struct sa_prot_state *cur_state, 632 struct sa_prot_map *new_table, 633 int table_ents); 634 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 635 int table_ents); 636 static int sasetprotents(struct cam_periph *periph, 637 struct mtparamset *ps, int num_params); 638 static struct sa_param_ent *safindparament(struct mtparamset *ps); 639 static int saparamsetlist(struct cam_periph *periph, 640 struct mtsetlist *list, int need_copy); 641 static int saextget(struct cdev *dev, struct cam_periph *periph, 642 struct sbuf *sb, struct mtextget *g); 643 static int saparamget(struct sa_softc *softc, struct sbuf *sb); 644 static void saprevent(struct cam_periph *periph, int action); 645 static int sarewind(struct cam_periph *periph); 646 static int saspace(struct cam_periph *periph, int count, 647 scsi_space_code code); 648 static void sadevgonecb(void *arg); 649 static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 650 static void saloadtotunables(struct sa_softc *softc); 651 static void sasysctlinit(void *context, int pending); 652 static int samount(struct cam_periph *, int, struct cdev *); 653 static int saretension(struct cam_periph *periph); 654 static int sareservereleaseunit(struct cam_periph *periph, 655 int reserve); 656 static int saloadunload(struct cam_periph *periph, int load); 657 static int saerase(struct cam_periph *periph, int longerase); 658 static int sawritefilemarks(struct cam_periph *periph, 659 int nmarks, int setmarks, int immed); 660 static int sagetpos(struct cam_periph *periph); 661 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 662 static int sasetpos(struct cam_periph *periph, int, 663 struct mtlocate *); 664 static void safilldenstypesb(struct sbuf *sb, int *indent, 665 uint8_t *buf, int buf_len, 666 int is_density); 667 static void safilldensitysb(struct sa_softc *softc, int *indent, 668 struct sbuf *sb); 669 static void saloadtimeouts(struct sa_softc *softc, union ccb *ccb); 670 671 #ifndef SA_DEFAULT_IO_SPLIT 672 #define SA_DEFAULT_IO_SPLIT 0 673 #endif 674 675 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 676 677 /* 678 * Tunable to allow the user to set a global allow_io_split value. Note 679 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 680 * is bad behavior, because it hides the true tape block size from the 681 * application. 682 */ 683 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 684 "CAM Sequential Access Tape Driver"); 685 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 686 &sa_allow_io_split, 0, "Default I/O split value"); 687 688 static struct periph_driver sadriver = 689 { 690 sainit, "sa", 691 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 692 }; 693 694 PERIPHDRIVER_DECLARE(sa, sadriver); 695 696 /* For 2.2-stable support */ 697 #ifndef D_TAPE 698 #define D_TAPE 0 699 #endif 700 701 static struct cdevsw sa_cdevsw = { 702 .d_version = D_VERSION, 703 .d_open = saopen, 704 .d_close = saclose, 705 .d_read = physread, 706 .d_write = physwrite, 707 .d_ioctl = saioctl, 708 .d_strategy = sastrategy, 709 .d_name = "sa", 710 .d_flags = D_TAPE | D_TRACKCLOSE, 711 }; 712 713 static int 714 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 715 { 716 struct cam_periph *periph; 717 struct sa_softc *softc; 718 int error; 719 720 periph = (struct cam_periph *)dev->si_drv1; 721 if (cam_periph_acquire(periph) != 0) { 722 return (ENXIO); 723 } 724 725 cam_periph_lock(periph); 726 727 softc = (struct sa_softc *)periph->softc; 728 729 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 730 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 731 732 if (SA_IS_CTRL(dev)) { 733 softc->ctrl_mode = 1; 734 softc->open_count++; 735 cam_periph_unlock(periph); 736 return (0); 737 } 738 739 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 740 cam_periph_unlock(periph); 741 cam_periph_release(periph); 742 return (error); 743 } 744 745 if (softc->flags & SA_FLAG_OPEN) { 746 error = EBUSY; 747 } else if (softc->flags & SA_FLAG_INVALID) { 748 error = ENXIO; 749 } else { 750 /* 751 * Preserve whether this is a read_only open. 752 */ 753 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 754 755 /* 756 * The function samount ensures media is loaded and ready. 757 * It also does a device RESERVE if the tape isn't yet mounted. 758 * 759 * If the mount fails and this was a non-blocking open, 760 * make this a 'open_pending_mount' action. 761 */ 762 error = samount(periph, flags, dev); 763 if (error && (flags & O_NONBLOCK)) { 764 softc->flags |= SA_FLAG_OPEN; 765 softc->open_pending_mount = 1; 766 softc->open_count++; 767 cam_periph_unhold(periph); 768 cam_periph_unlock(periph); 769 return (0); 770 } 771 } 772 773 if (error) { 774 cam_periph_unhold(periph); 775 cam_periph_unlock(periph); 776 cam_periph_release(periph); 777 return (error); 778 } 779 780 saprevent(periph, PR_PREVENT); 781 softc->flags |= SA_FLAG_OPEN; 782 softc->open_count++; 783 784 cam_periph_unhold(periph); 785 cam_periph_unlock(periph); 786 return (error); 787 } 788 789 static int 790 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 791 { 792 struct cam_periph *periph; 793 struct sa_softc *softc; 794 int mode, error, writing, tmp, i; 795 int closedbits = SA_FLAG_OPEN; 796 797 mode = SAMODE(dev); 798 periph = (struct cam_periph *)dev->si_drv1; 799 cam_periph_lock(periph); 800 801 softc = (struct sa_softc *)periph->softc; 802 803 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 804 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 805 806 softc->open_rdonly = 0; 807 if (SA_IS_CTRL(dev)) { 808 softc->ctrl_mode = 0; 809 softc->open_count--; 810 cam_periph_unlock(periph); 811 cam_periph_release(periph); 812 return (0); 813 } 814 815 if (softc->open_pending_mount) { 816 softc->flags &= ~SA_FLAG_OPEN; 817 softc->open_pending_mount = 0; 818 softc->open_count--; 819 cam_periph_unlock(periph); 820 cam_periph_release(periph); 821 return (0); 822 } 823 824 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 825 cam_periph_unlock(periph); 826 return (error); 827 } 828 829 /* 830 * Were we writing the tape? 831 */ 832 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 833 834 /* 835 * See whether or not we need to write filemarks. If this 836 * fails, we probably have to assume we've lost tape 837 * position. 838 */ 839 error = sacheckeod(periph); 840 if (error) { 841 xpt_print(periph->path, 842 "failed to write terminating filemark(s)\n"); 843 softc->flags |= SA_FLAG_TAPE_FROZEN; 844 } 845 846 /* 847 * Whatever we end up doing, allow users to eject tapes from here on. 848 */ 849 saprevent(periph, PR_ALLOW); 850 851 /* 852 * Decide how to end... 853 */ 854 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 855 closedbits |= SA_FLAG_TAPE_FROZEN; 856 } else switch (mode) { 857 case SA_MODE_OFFLINE: 858 /* 859 * An 'offline' close is an unconditional release of 860 * frozen && mount conditions, irrespective of whether 861 * these operations succeeded. The reason for this is 862 * to allow at least some kind of programmatic way 863 * around our state getting all fouled up. If somebody 864 * issues an 'offline' command, that will be allowed 865 * to clear state. 866 */ 867 (void) sarewind(periph); 868 (void) saloadunload(periph, FALSE); 869 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 870 break; 871 case SA_MODE_REWIND: 872 /* 873 * If the rewind fails, return an error- if anyone cares, 874 * but not overwriting any previous error. 875 * 876 * We don't clear the notion of mounted here, but we do 877 * clear the notion of frozen if we successfully rewound. 878 */ 879 tmp = sarewind(periph); 880 if (tmp) { 881 if (error != 0) 882 error = tmp; 883 } else { 884 closedbits |= SA_FLAG_TAPE_FROZEN; 885 } 886 break; 887 case SA_MODE_NOREWIND: 888 /* 889 * If we're not rewinding/unloading the tape, find out 890 * whether we need to back up over one of two filemarks 891 * we wrote (if we wrote two filemarks) so that appends 892 * from this point on will be sane. 893 */ 894 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 895 tmp = saspace(periph, -1, SS_FILEMARKS); 896 if (tmp) { 897 xpt_print(periph->path, "unable to backspace " 898 "over one of double filemarks at end of " 899 "tape\n"); 900 xpt_print(periph->path, "it is possible that " 901 "this device needs a SA_QUIRK_1FM quirk set" 902 "for it\n"); 903 softc->flags |= SA_FLAG_TAPE_FROZEN; 904 } 905 } 906 break; 907 default: 908 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 909 /* NOTREACHED */ 910 break; 911 } 912 913 /* 914 * We wish to note here that there are no more filemarks to be written. 915 */ 916 softc->filemarks = 0; 917 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 918 919 /* 920 * And we are no longer open for business. 921 */ 922 softc->flags &= ~closedbits; 923 softc->open_count--; 924 925 /* 926 * Invalidate any density information that depends on having tape 927 * media in the drive. 928 */ 929 for (i = 0; i < SA_DENSITY_TYPES; i++) { 930 if (softc->density_type_bits[i] & SRDS_MEDIA) 931 softc->density_info_valid[i] = 0; 932 } 933 934 /* 935 * Inform users if tape state if frozen.... 936 */ 937 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 938 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 939 "REWIND or MTEOM command to clear this state.\n"); 940 } 941 942 /* release the device if it is no longer mounted */ 943 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 944 sareservereleaseunit(periph, FALSE); 945 946 cam_periph_unhold(periph); 947 cam_periph_unlock(periph); 948 cam_periph_release(periph); 949 950 return (error); 951 } 952 953 /* 954 * Actually translate the requested transfer into one the physical driver 955 * can understand. The transfer is described by a buf and will include 956 * only one physical transfer. 957 */ 958 static void 959 sastrategy(struct bio *bp) 960 { 961 struct cam_periph *periph; 962 struct sa_softc *softc; 963 964 bp->bio_resid = bp->bio_bcount; 965 if (SA_IS_CTRL(bp->bio_dev)) { 966 biofinish(bp, NULL, EINVAL); 967 return; 968 } 969 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 970 cam_periph_lock(periph); 971 972 softc = (struct sa_softc *)periph->softc; 973 974 if (softc->flags & SA_FLAG_INVALID) { 975 cam_periph_unlock(periph); 976 biofinish(bp, NULL, ENXIO); 977 return; 978 } 979 980 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 981 cam_periph_unlock(periph); 982 biofinish(bp, NULL, EPERM); 983 return; 984 } 985 986 /* 987 * This should actually never occur as the write(2) 988 * system call traps attempts to write to a read-only 989 * file descriptor. 990 */ 991 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 992 cam_periph_unlock(periph); 993 biofinish(bp, NULL, EBADF); 994 return; 995 } 996 997 if (softc->open_pending_mount) { 998 int error = samount(periph, 0, bp->bio_dev); 999 if (error) { 1000 cam_periph_unlock(periph); 1001 biofinish(bp, NULL, ENXIO); 1002 return; 1003 } 1004 saprevent(periph, PR_PREVENT); 1005 softc->open_pending_mount = 0; 1006 } 1007 1008 /* 1009 * If it's a null transfer, return immediately 1010 */ 1011 if (bp->bio_bcount == 0) { 1012 cam_periph_unlock(periph); 1013 biodone(bp); 1014 return; 1015 } 1016 1017 /* valid request? */ 1018 if (softc->flags & SA_FLAG_FIXED) { 1019 /* 1020 * Fixed block device. The byte count must 1021 * be a multiple of our block size. 1022 */ 1023 if (((softc->blk_mask != ~0) && 1024 ((bp->bio_bcount & softc->blk_mask) != 0)) || 1025 ((softc->blk_mask == ~0) && 1026 ((bp->bio_bcount % softc->min_blk) != 0))) { 1027 xpt_print(periph->path, "Invalid request. Fixed block " 1028 "device requests must be a multiple of %d bytes\n", 1029 softc->min_blk); 1030 cam_periph_unlock(periph); 1031 biofinish(bp, NULL, EINVAL); 1032 return; 1033 } 1034 } else if ((bp->bio_bcount > softc->max_blk) || 1035 (bp->bio_bcount < softc->min_blk) || 1036 (bp->bio_bcount & softc->blk_mask) != 0) { 1037 xpt_print_path(periph->path); 1038 printf("Invalid request. Variable block " 1039 "device requests must be "); 1040 if (softc->blk_mask != 0) { 1041 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 1042 } 1043 printf("between %d and %d bytes\n", softc->min_blk, 1044 softc->max_blk); 1045 cam_periph_unlock(periph); 1046 biofinish(bp, NULL, EINVAL); 1047 return; 1048 } 1049 1050 /* 1051 * Place it at the end of the queue. 1052 */ 1053 bioq_insert_tail(&softc->bio_queue, bp); 1054 softc->queue_count++; 1055 #if 0 1056 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1057 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 1058 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 1059 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1060 #endif 1061 if (softc->queue_count > 1) { 1062 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1063 ("sastrategy: queue count now %d\n", softc->queue_count)); 1064 } 1065 1066 /* 1067 * Schedule ourselves for performing the work. 1068 */ 1069 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1070 cam_periph_unlock(periph); 1071 1072 return; 1073 } 1074 1075 static int 1076 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1077 { 1078 uint32_t sili_blocksize; 1079 struct sa_softc *softc; 1080 int error; 1081 1082 error = 0; 1083 softc = (struct sa_softc *)periph->softc; 1084 1085 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1086 snprintf(ps->error_str, sizeof(ps->error_str), 1087 "sili is a signed parameter"); 1088 goto bailout; 1089 } 1090 if ((ps->value.value_signed < 0) 1091 || (ps->value.value_signed > 1)) { 1092 snprintf(ps->error_str, sizeof(ps->error_str), 1093 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1094 goto bailout_error; 1095 } 1096 /* 1097 * We only set the SILI flag in variable block 1098 * mode. You'll get a check condition in fixed 1099 * block mode if things don't line up in any case. 1100 */ 1101 if (softc->flags & SA_FLAG_FIXED) { 1102 snprintf(ps->error_str, sizeof(ps->error_str), 1103 "can't set sili bit in fixed block mode"); 1104 goto bailout_error; 1105 } 1106 if (softc->sili == ps->value.value_signed) 1107 goto bailout; 1108 1109 if (ps->value.value_signed == 1) 1110 sili_blocksize = 4; 1111 else 1112 sili_blocksize = 0; 1113 1114 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1115 sili_blocksize, 0, 0, SF_QUIET_IR); 1116 if (error != 0) { 1117 snprintf(ps->error_str, sizeof(ps->error_str), 1118 "sasetparams() returned error %d", error); 1119 goto bailout_error; 1120 } 1121 1122 softc->sili = ps->value.value_signed; 1123 1124 bailout: 1125 ps->status = MT_PARAM_STATUS_OK; 1126 return (error); 1127 1128 bailout_error: 1129 ps->status = MT_PARAM_STATUS_ERROR; 1130 if (error == 0) 1131 error = EINVAL; 1132 1133 return (error); 1134 } 1135 1136 static int 1137 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1138 { 1139 struct sa_softc *softc; 1140 int error; 1141 1142 error = 0; 1143 softc = (struct sa_softc *)periph->softc; 1144 1145 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1146 snprintf(ps->error_str, sizeof(ps->error_str), 1147 "eot_warn is a signed parameter"); 1148 ps->status = MT_PARAM_STATUS_ERROR; 1149 goto bailout; 1150 } 1151 if ((ps->value.value_signed < 0) 1152 || (ps->value.value_signed > 1)) { 1153 snprintf(ps->error_str, sizeof(ps->error_str), 1154 "invalid eot_warn value %jd\n", 1155 (intmax_t)ps->value.value_signed); 1156 ps->status = MT_PARAM_STATUS_ERROR; 1157 goto bailout; 1158 } 1159 softc->eot_warn = ps->value.value_signed; 1160 ps->status = MT_PARAM_STATUS_OK; 1161 bailout: 1162 if (ps->status != MT_PARAM_STATUS_OK) 1163 error = EINVAL; 1164 1165 return (error); 1166 } 1167 1168 static void 1169 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1170 { 1171 int tmpint; 1172 1173 SASBADDNODE(sb, *indent, protection); 1174 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1175 tmpint = 1; 1176 else 1177 tmpint = 0; 1178 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1179 "Set to 1 if protection information is supported"); 1180 1181 if ((tmpint != 0) 1182 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1183 struct sa_prot_state *prot; 1184 1185 prot = &softc->prot_info.cur_prot_state; 1186 1187 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1188 prot_method, "Current Protection Method"); 1189 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1190 pi_length, "Length of Protection Information"); 1191 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1192 lbp_w, "Check Protection on Writes"); 1193 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1194 lbp_r, "Check and Include Protection on Reads"); 1195 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1196 rbdp, "Transfer Protection Information for RECOVER " 1197 "BUFFERED DATA command"); 1198 } 1199 SASBENDNODE(sb, *indent, protection); 1200 } 1201 1202 static void 1203 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1204 int table_ents) 1205 { 1206 int i; 1207 1208 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1209 sizeof(sa_prot_table))); 1210 1211 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1212 1213 for (i = 0; i < table_ents; i++) 1214 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1215 new_table[i].offset); 1216 1217 return; 1218 } 1219 1220 static struct sa_prot_map * 1221 safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1222 { 1223 char *prot_name = "protection."; 1224 int i, prot_len; 1225 1226 prot_len = strlen(prot_name); 1227 1228 /* 1229 * This shouldn't happen, but we check just in case. 1230 */ 1231 if (strncmp(name, prot_name, prot_len) != 0) 1232 goto bailout; 1233 1234 for (i = 0; i < table_ents; i++) { 1235 if (strcmp(&name[prot_len], table[i].name) != 0) 1236 continue; 1237 return (&table[i]); 1238 } 1239 bailout: 1240 return (NULL); 1241 } 1242 1243 static int 1244 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1245 { 1246 struct sa_softc *softc; 1247 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1248 struct sa_prot_state new_state; 1249 int error; 1250 int i; 1251 1252 softc = (struct sa_softc *)periph->softc; 1253 error = 0; 1254 1255 /* 1256 * Make sure that this tape drive supports protection information. 1257 * Otherwise we can't set anything. 1258 */ 1259 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1260 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1261 "Protection information is not supported for this device"); 1262 ps[0].status = MT_PARAM_STATUS_ERROR; 1263 goto bailout; 1264 } 1265 1266 /* 1267 * We can't operate with physio(9) splitting enabled, because there 1268 * is no way to insure (especially in variable block mode) that 1269 * what the user writes (with a checksum block at the end) will 1270 * make it into the sa(4) driver intact. 1271 */ 1272 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1273 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1274 "Protection information cannot be enabled with I/O " 1275 "splitting"); 1276 ps[0].status = MT_PARAM_STATUS_ERROR; 1277 goto bailout; 1278 } 1279 1280 /* 1281 * Take the current cached protection state and use that as the 1282 * basis for our new entries. 1283 */ 1284 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1285 1286 /* 1287 * Populate the table mapping property names to pointers into the 1288 * state structure. 1289 */ 1290 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1291 1292 /* 1293 * For each parameter the user passed in, make sure the name, type 1294 * and value are valid. 1295 */ 1296 for (i = 0; i < num_params; i++) { 1297 struct sa_prot_map *ent; 1298 1299 ent = safindprotent(ps[i].value_name, prot_ents, 1300 SA_NUM_PROT_ENTS); 1301 if (ent == NULL) { 1302 ps[i].status = MT_PARAM_STATUS_ERROR; 1303 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1304 "Invalid protection entry name %s", 1305 ps[i].value_name); 1306 error = EINVAL; 1307 goto bailout; 1308 } 1309 if (ent->param_type != ps[i].value_type) { 1310 ps[i].status = MT_PARAM_STATUS_ERROR; 1311 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1312 "Supplied type %d does not match actual type %d", 1313 ps[i].value_type, ent->param_type); 1314 error = EINVAL; 1315 goto bailout; 1316 } 1317 if ((ps[i].value.value_unsigned < ent->min_val) 1318 || (ps[i].value.value_unsigned > ent->max_val)) { 1319 ps[i].status = MT_PARAM_STATUS_ERROR; 1320 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1321 "Value %ju is outside valid range %u - %u", 1322 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1323 ent->max_val); 1324 error = EINVAL; 1325 goto bailout; 1326 } 1327 *(ent->value) = ps[i].value.value_unsigned; 1328 } 1329 1330 /* 1331 * Actually send the protection settings to the drive. 1332 */ 1333 error = sasetprot(periph, &new_state); 1334 if (error != 0) { 1335 for (i = 0; i < num_params; i++) { 1336 ps[i].status = MT_PARAM_STATUS_ERROR; 1337 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1338 "Unable to set parameter, see dmesg(8)"); 1339 } 1340 goto bailout; 1341 } 1342 1343 /* 1344 * Let the user know that his settings were stored successfully. 1345 */ 1346 for (i = 0; i < num_params; i++) 1347 ps[i].status = MT_PARAM_STATUS_OK; 1348 1349 bailout: 1350 return (error); 1351 } 1352 /* 1353 * Entry handlers generally only handle a single entry. Node handlers will 1354 * handle a contiguous range of parameters to set in a single call. 1355 */ 1356 typedef enum { 1357 SA_PARAM_TYPE_ENTRY, 1358 SA_PARAM_TYPE_NODE 1359 } sa_param_type; 1360 1361 struct sa_param_ent { 1362 char *name; 1363 sa_param_type param_type; 1364 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1365 int num_params); 1366 } sa_param_table[] = { 1367 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1368 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1369 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1370 }; 1371 1372 static struct sa_param_ent * 1373 safindparament(struct mtparamset *ps) 1374 { 1375 unsigned int i; 1376 1377 for (i = 0; i < nitems(sa_param_table); i++){ 1378 /* 1379 * For entries, we compare all of the characters. For 1380 * nodes, we only compare the first N characters. The node 1381 * handler will decode the rest. 1382 */ 1383 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1384 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1385 continue; 1386 } else { 1387 if (strncmp(ps->value_name, sa_param_table[i].name, 1388 strlen(sa_param_table[i].name)) != 0) 1389 continue; 1390 } 1391 return (&sa_param_table[i]); 1392 } 1393 1394 return (NULL); 1395 } 1396 1397 /* 1398 * Go through a list of parameters, coalescing contiguous parameters with 1399 * the same parent node into a single call to a set_func. 1400 */ 1401 static int 1402 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1403 int need_copy) 1404 { 1405 int i, contig_ents; 1406 int error; 1407 struct mtparamset *params, *first; 1408 struct sa_param_ent *first_ent; 1409 1410 error = 0; 1411 params = NULL; 1412 1413 if (list->num_params == 0) 1414 /* Nothing to do */ 1415 goto bailout; 1416 1417 /* 1418 * Verify that the user has the correct structure size. 1419 */ 1420 if ((list->num_params * sizeof(struct mtparamset)) != 1421 list->param_len) { 1422 xpt_print(periph->path, "%s: length of params %d != " 1423 "sizeof(struct mtparamset) %zd * num_params %d\n", 1424 __func__, list->param_len, sizeof(struct mtparamset), 1425 list->num_params); 1426 error = EINVAL; 1427 goto bailout; 1428 } 1429 1430 if (need_copy != 0) { 1431 /* 1432 * XXX KDM will dropping the lock cause an issue here? 1433 */ 1434 cam_periph_unlock(periph); 1435 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1436 error = copyin(list->params, params, list->param_len); 1437 cam_periph_lock(periph); 1438 1439 if (error != 0) 1440 goto bailout; 1441 } else { 1442 params = list->params; 1443 } 1444 1445 contig_ents = 0; 1446 first = NULL; 1447 first_ent = NULL; 1448 for (i = 0; i < list->num_params; i++) { 1449 struct sa_param_ent *ent; 1450 1451 ent = safindparament(¶ms[i]); 1452 if (ent == NULL) { 1453 snprintf(params[i].error_str, 1454 sizeof(params[i].error_str), 1455 "%s: cannot find parameter %s", __func__, 1456 params[i].value_name); 1457 params[i].status = MT_PARAM_STATUS_ERROR; 1458 break; 1459 } 1460 1461 if (first != NULL) { 1462 if (first_ent == ent) { 1463 /* 1464 * We're still in a contiguous list of 1465 * parameters that can be handled by one 1466 * node handler. 1467 */ 1468 contig_ents++; 1469 continue; 1470 } else { 1471 error = first_ent->set_func(periph, first, 1472 contig_ents); 1473 first = NULL; 1474 first_ent = NULL; 1475 contig_ents = 0; 1476 if (error != 0) { 1477 error = 0; 1478 break; 1479 } 1480 } 1481 } 1482 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1483 first = ¶ms[i]; 1484 first_ent = ent; 1485 contig_ents = 1; 1486 } else { 1487 error = ent->set_func(periph, ¶ms[i], 1); 1488 if (error != 0) { 1489 error = 0; 1490 break; 1491 } 1492 } 1493 } 1494 if (first != NULL) 1495 first_ent->set_func(periph, first, contig_ents); 1496 1497 bailout: 1498 if (need_copy != 0) { 1499 if (error != EFAULT) { 1500 cam_periph_unlock(periph); 1501 copyout(params, list->params, list->param_len); 1502 cam_periph_lock(periph); 1503 } 1504 free(params, M_SCSISA); 1505 } 1506 return (error); 1507 } 1508 1509 static int 1510 sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1511 { 1512 struct sa_softc *softc; 1513 u_int8_t write_protect; 1514 int comp_enabled, comp_supported, error; 1515 1516 softc = (struct sa_softc *)periph->softc; 1517 1518 if (softc->open_pending_mount) 1519 return (0); 1520 1521 /* The control device may issue getparams() if there are no opens. */ 1522 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1523 return (0); 1524 1525 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1526 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1527 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1528 &softc->comp_algorithm, NULL, NULL, 0, 0); 1529 if (error) 1530 return (error); 1531 if (write_protect) 1532 softc->flags |= SA_FLAG_TAPE_WP; 1533 else 1534 softc->flags &= ~SA_FLAG_TAPE_WP; 1535 softc->flags &= ~SA_FLAG_COMPRESSION; 1536 if (comp_supported) { 1537 if (softc->saved_comp_algorithm == 0) 1538 softc->saved_comp_algorithm = 1539 softc->comp_algorithm; 1540 softc->flags |= SA_FLAG_COMP_SUPP; 1541 if (comp_enabled) 1542 softc->flags |= SA_FLAG_COMP_ENABLED; 1543 } else 1544 softc->flags |= SA_FLAG_COMP_UNSUPP; 1545 1546 return (0); 1547 } 1548 1549 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1550 if (softc->open_pending_mount) { \ 1551 error = samount(periph, 0, dev); \ 1552 if (error) { \ 1553 break; \ 1554 } \ 1555 saprevent(periph, PR_PREVENT); \ 1556 softc->open_pending_mount = 0; \ 1557 } 1558 1559 static int 1560 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1561 { 1562 struct cam_periph *periph; 1563 struct sa_softc *softc; 1564 scsi_space_code spaceop; 1565 int didlockperiph = 0; 1566 int mode; 1567 int error = 0; 1568 1569 mode = SAMODE(dev); 1570 error = 0; /* shut up gcc */ 1571 spaceop = 0; /* shut up gcc */ 1572 1573 periph = (struct cam_periph *)dev->si_drv1; 1574 cam_periph_lock(periph); 1575 softc = (struct sa_softc *)periph->softc; 1576 1577 /* 1578 * Check for control mode accesses. We allow MTIOCGET and 1579 * MTIOCERRSTAT (but need to be the only one open in order 1580 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1581 * and MTCOMP (but need to be the only one accessing this 1582 * device to run those). 1583 */ 1584 1585 if (SA_IS_CTRL(dev)) { 1586 switch (cmd) { 1587 case MTIOCGETEOTMODEL: 1588 case MTIOCGET: 1589 case MTIOCEXTGET: 1590 case MTIOCPARAMGET: 1591 case MTIOCRBLIM: 1592 break; 1593 case MTIOCERRSTAT: 1594 /* 1595 * If the periph isn't already locked, lock it 1596 * so our MTIOCERRSTAT can reset latched error stats. 1597 * 1598 * If the periph is already locked, skip it because 1599 * we're just getting status and it'll be up to the 1600 * other thread that has this device open to do 1601 * an MTIOCERRSTAT that would clear latched status. 1602 */ 1603 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1604 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1605 if (error != 0) { 1606 cam_periph_unlock(periph); 1607 return (error); 1608 } 1609 didlockperiph = 1; 1610 } 1611 break; 1612 1613 case MTIOCTOP: 1614 { 1615 struct mtop *mt = (struct mtop *) arg; 1616 1617 /* 1618 * Check to make sure it's an OP we can perform 1619 * with no media inserted. 1620 */ 1621 switch (mt->mt_op) { 1622 case MTSETBSIZ: 1623 case MTSETDNSTY: 1624 case MTCOMP: 1625 mt = NULL; 1626 /* FALLTHROUGH */ 1627 default: 1628 break; 1629 } 1630 if (mt != NULL) { 1631 break; 1632 } 1633 /* FALLTHROUGH */ 1634 } 1635 case MTIOCSETEOTMODEL: 1636 /* 1637 * We need to acquire the peripheral here rather 1638 * than at open time because we are sharing writable 1639 * access to data structures. 1640 */ 1641 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1642 if (error != 0) { 1643 cam_periph_unlock(periph); 1644 return (error); 1645 } 1646 didlockperiph = 1; 1647 break; 1648 1649 default: 1650 cam_periph_unlock(periph); 1651 return (EINVAL); 1652 } 1653 } 1654 1655 /* 1656 * Find the device that the user is talking about 1657 */ 1658 switch (cmd) { 1659 case MTIOCGET: 1660 { 1661 struct mtget *g = (struct mtget *)arg; 1662 1663 error = sagetparams_common(dev, periph); 1664 if (error) 1665 break; 1666 bzero(g, sizeof(struct mtget)); 1667 g->mt_type = MT_ISAR; 1668 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1669 g->mt_comp = MT_COMP_UNSUPP; 1670 g->mt_comp0 = MT_COMP_UNSUPP; 1671 g->mt_comp1 = MT_COMP_UNSUPP; 1672 g->mt_comp2 = MT_COMP_UNSUPP; 1673 g->mt_comp3 = MT_COMP_UNSUPP; 1674 } else { 1675 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1676 g->mt_comp = MT_COMP_DISABLED; 1677 } else { 1678 g->mt_comp = softc->comp_algorithm; 1679 } 1680 g->mt_comp0 = softc->comp_algorithm; 1681 g->mt_comp1 = softc->comp_algorithm; 1682 g->mt_comp2 = softc->comp_algorithm; 1683 g->mt_comp3 = softc->comp_algorithm; 1684 } 1685 g->mt_density = softc->media_density; 1686 g->mt_density0 = softc->media_density; 1687 g->mt_density1 = softc->media_density; 1688 g->mt_density2 = softc->media_density; 1689 g->mt_density3 = softc->media_density; 1690 g->mt_blksiz = softc->media_blksize; 1691 g->mt_blksiz0 = softc->media_blksize; 1692 g->mt_blksiz1 = softc->media_blksize; 1693 g->mt_blksiz2 = softc->media_blksize; 1694 g->mt_blksiz3 = softc->media_blksize; 1695 g->mt_fileno = softc->fileno; 1696 g->mt_blkno = softc->blkno; 1697 g->mt_dsreg = (short) softc->dsreg; 1698 /* 1699 * Yes, we know that this is likely to overflow 1700 */ 1701 if (softc->last_resid_was_io) { 1702 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1703 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1704 softc->last_io_resid = 0; 1705 } 1706 } 1707 } else { 1708 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1709 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1710 softc->last_ctl_resid = 0; 1711 } 1712 } 1713 } 1714 error = 0; 1715 break; 1716 } 1717 case MTIOCEXTGET: 1718 case MTIOCPARAMGET: 1719 { 1720 struct mtextget *g = (struct mtextget *)arg; 1721 char *tmpstr2; 1722 struct sbuf *sb; 1723 1724 /* 1725 * Report drive status using an XML format. 1726 */ 1727 1728 /* 1729 * XXX KDM will dropping the lock cause any problems here? 1730 */ 1731 cam_periph_unlock(periph); 1732 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1733 if (sb == NULL) { 1734 g->status = MT_EXT_GET_ERROR; 1735 snprintf(g->error_str, sizeof(g->error_str), 1736 "Unable to allocate %d bytes for status info", 1737 g->alloc_len); 1738 cam_periph_lock(periph); 1739 goto extget_bailout; 1740 } 1741 cam_periph_lock(periph); 1742 1743 if (cmd == MTIOCEXTGET) 1744 error = saextget(dev, periph, sb, g); 1745 else 1746 error = saparamget(softc, sb); 1747 1748 if (error != 0) 1749 goto extget_bailout; 1750 1751 error = sbuf_finish(sb); 1752 if (error == ENOMEM) { 1753 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1754 error = 0; 1755 } else if (error != 0) { 1756 g->status = MT_EXT_GET_ERROR; 1757 snprintf(g->error_str, sizeof(g->error_str), 1758 "Error %d returned from sbuf_finish()", error); 1759 } else 1760 g->status = MT_EXT_GET_OK; 1761 1762 error = 0; 1763 tmpstr2 = sbuf_data(sb); 1764 g->fill_len = strlen(tmpstr2) + 1; 1765 cam_periph_unlock(periph); 1766 1767 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1768 1769 cam_periph_lock(periph); 1770 1771 extget_bailout: 1772 sbuf_delete(sb); 1773 break; 1774 } 1775 case MTIOCPARAMSET: 1776 { 1777 struct mtsetlist list; 1778 struct mtparamset *ps = (struct mtparamset *)arg; 1779 1780 bzero(&list, sizeof(list)); 1781 list.num_params = 1; 1782 list.param_len = sizeof(*ps); 1783 list.params = ps; 1784 1785 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1786 break; 1787 } 1788 case MTIOCSETLIST: 1789 { 1790 struct mtsetlist *list = (struct mtsetlist *)arg; 1791 1792 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1793 break; 1794 } 1795 case MTIOCERRSTAT: 1796 { 1797 struct scsi_tape_errors *sep = 1798 &((union mterrstat *)arg)->scsi_errstat; 1799 1800 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1801 ("saioctl: MTIOCERRSTAT\n")); 1802 1803 bzero(sep, sizeof(*sep)); 1804 sep->io_resid = softc->last_io_resid; 1805 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1806 sizeof (sep->io_sense)); 1807 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1808 sizeof (sep->io_cdb)); 1809 sep->ctl_resid = softc->last_ctl_resid; 1810 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1811 sizeof (sep->ctl_sense)); 1812 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1813 sizeof (sep->ctl_cdb)); 1814 1815 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1816 didlockperiph) 1817 bzero((caddr_t) &softc->errinfo, 1818 sizeof (softc->errinfo)); 1819 error = 0; 1820 break; 1821 } 1822 case MTIOCTOP: 1823 { 1824 struct mtop *mt; 1825 int count; 1826 1827 PENDING_MOUNT_CHECK(softc, periph, dev); 1828 1829 mt = (struct mtop *)arg; 1830 1831 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1832 ("saioctl: op=0x%x count=0x%x\n", 1833 mt->mt_op, mt->mt_count)); 1834 1835 count = mt->mt_count; 1836 switch (mt->mt_op) { 1837 case MTWEOF: /* write an end-of-file marker */ 1838 /* 1839 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1840 * flag because by keeping track of filemarks 1841 * we have last written we know whether or not 1842 * we need to write more when we close the device. 1843 */ 1844 error = sawritefilemarks(periph, count, FALSE, FALSE); 1845 break; 1846 case MTWEOFI: 1847 /* write an end-of-file marker without waiting */ 1848 error = sawritefilemarks(periph, count, FALSE, TRUE); 1849 break; 1850 case MTWSS: /* write a setmark */ 1851 error = sawritefilemarks(periph, count, TRUE, FALSE); 1852 break; 1853 case MTBSR: /* backward space record */ 1854 case MTFSR: /* forward space record */ 1855 case MTBSF: /* backward space file */ 1856 case MTFSF: /* forward space file */ 1857 case MTBSS: /* backward space setmark */ 1858 case MTFSS: /* forward space setmark */ 1859 case MTEOD: /* space to end of recorded medium */ 1860 { 1861 int nmarks; 1862 1863 spaceop = SS_FILEMARKS; 1864 nmarks = softc->filemarks; 1865 error = sacheckeod(periph); 1866 if (error) { 1867 xpt_print(periph->path, 1868 "EOD check prior to spacing failed\n"); 1869 softc->flags |= SA_FLAG_EIO_PENDING; 1870 break; 1871 } 1872 nmarks -= softc->filemarks; 1873 switch(mt->mt_op) { 1874 case MTBSR: 1875 count = -count; 1876 /* FALLTHROUGH */ 1877 case MTFSR: 1878 spaceop = SS_BLOCKS; 1879 break; 1880 case MTBSF: 1881 count = -count; 1882 /* FALLTHROUGH */ 1883 case MTFSF: 1884 break; 1885 case MTBSS: 1886 count = -count; 1887 /* FALLTHROUGH */ 1888 case MTFSS: 1889 spaceop = SS_SETMARKS; 1890 break; 1891 case MTEOD: 1892 spaceop = SS_EOD; 1893 count = 0; 1894 nmarks = 0; 1895 break; 1896 default: 1897 error = EINVAL; 1898 break; 1899 } 1900 if (error) 1901 break; 1902 1903 nmarks = softc->filemarks; 1904 /* 1905 * XXX: Why are we checking again? 1906 */ 1907 error = sacheckeod(periph); 1908 if (error) 1909 break; 1910 nmarks -= softc->filemarks; 1911 error = saspace(periph, count - nmarks, spaceop); 1912 /* 1913 * At this point, clear that we've written the tape 1914 * and that we've written any filemarks. We really 1915 * don't know what the applications wishes to do next- 1916 * the sacheckeod's will make sure we terminated the 1917 * tape correctly if we'd been writing, but the next 1918 * action the user application takes will set again 1919 * whether we need to write filemarks. 1920 */ 1921 softc->flags &= 1922 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1923 softc->filemarks = 0; 1924 break; 1925 } 1926 case MTREW: /* rewind */ 1927 PENDING_MOUNT_CHECK(softc, periph, dev); 1928 (void) sacheckeod(periph); 1929 error = sarewind(periph); 1930 /* see above */ 1931 softc->flags &= 1932 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1933 softc->flags &= ~SA_FLAG_ERR_PENDING; 1934 softc->filemarks = 0; 1935 break; 1936 case MTERASE: /* erase */ 1937 PENDING_MOUNT_CHECK(softc, periph, dev); 1938 error = saerase(periph, count); 1939 softc->flags &= 1940 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1941 softc->flags &= ~SA_FLAG_ERR_PENDING; 1942 break; 1943 case MTRETENS: /* re-tension tape */ 1944 PENDING_MOUNT_CHECK(softc, periph, dev); 1945 error = saretension(periph); 1946 softc->flags &= 1947 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1948 softc->flags &= ~SA_FLAG_ERR_PENDING; 1949 break; 1950 case MTOFFL: /* rewind and put the drive offline */ 1951 1952 PENDING_MOUNT_CHECK(softc, periph, dev); 1953 1954 (void) sacheckeod(periph); 1955 /* see above */ 1956 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1957 softc->filemarks = 0; 1958 1959 error = sarewind(periph); 1960 /* clear the frozen flag anyway */ 1961 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1962 1963 /* 1964 * Be sure to allow media removal before ejecting. 1965 */ 1966 1967 saprevent(periph, PR_ALLOW); 1968 if (error == 0) { 1969 error = saloadunload(periph, FALSE); 1970 if (error == 0) { 1971 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1972 } 1973 } 1974 break; 1975 1976 case MTLOAD: 1977 error = saloadunload(periph, TRUE); 1978 break; 1979 case MTNOP: /* no operation, sets status only */ 1980 case MTCACHE: /* enable controller cache */ 1981 case MTNOCACHE: /* disable controller cache */ 1982 error = 0; 1983 break; 1984 1985 case MTSETBSIZ: /* Set block size for device */ 1986 1987 PENDING_MOUNT_CHECK(softc, periph, dev); 1988 1989 if ((softc->sili != 0) 1990 && (count != 0)) { 1991 xpt_print(periph->path, "Can't enter fixed " 1992 "block mode with SILI enabled\n"); 1993 error = EINVAL; 1994 break; 1995 } 1996 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1997 0, 0, 0); 1998 if (error == 0) { 1999 softc->last_media_blksize = 2000 softc->media_blksize; 2001 softc->media_blksize = count; 2002 if (count) { 2003 softc->flags |= SA_FLAG_FIXED; 2004 if (powerof2(count)) { 2005 softc->blk_shift = 2006 ffs(count) - 1; 2007 softc->blk_mask = count - 1; 2008 } else { 2009 softc->blk_mask = ~0; 2010 softc->blk_shift = 0; 2011 } 2012 /* 2013 * Make the user's desire 'persistent'. 2014 */ 2015 softc->quirks &= ~SA_QUIRK_VARIABLE; 2016 softc->quirks |= SA_QUIRK_FIXED; 2017 } else { 2018 softc->flags &= ~SA_FLAG_FIXED; 2019 if (softc->max_blk == 0) { 2020 softc->max_blk = ~0; 2021 } 2022 softc->blk_shift = 0; 2023 if (softc->blk_gran != 0) { 2024 softc->blk_mask = 2025 softc->blk_gran - 1; 2026 } else { 2027 softc->blk_mask = 0; 2028 } 2029 /* 2030 * Make the user's desire 'persistent'. 2031 */ 2032 softc->quirks |= SA_QUIRK_VARIABLE; 2033 softc->quirks &= ~SA_QUIRK_FIXED; 2034 } 2035 } 2036 break; 2037 case MTSETDNSTY: /* Set density for device and mode */ 2038 PENDING_MOUNT_CHECK(softc, periph, dev); 2039 2040 if (count > UCHAR_MAX) { 2041 error = EINVAL; 2042 break; 2043 } else { 2044 error = sasetparams(periph, SA_PARAM_DENSITY, 2045 0, count, 0, 0); 2046 } 2047 break; 2048 case MTCOMP: /* enable compression */ 2049 PENDING_MOUNT_CHECK(softc, periph, dev); 2050 /* 2051 * Some devices don't support compression, and 2052 * don't like it if you ask them for the 2053 * compression page. 2054 */ 2055 if ((softc->quirks & SA_QUIRK_NOCOMP) || 2056 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 2057 error = ENODEV; 2058 break; 2059 } 2060 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2061 0, 0, count, SF_NO_PRINT); 2062 break; 2063 default: 2064 error = EINVAL; 2065 } 2066 break; 2067 } 2068 case MTIOCIEOT: 2069 case MTIOCEEOT: 2070 error = 0; 2071 break; 2072 case MTIOCRDSPOS: 2073 PENDING_MOUNT_CHECK(softc, periph, dev); 2074 error = sardpos(periph, 0, (u_int32_t *) arg); 2075 break; 2076 case MTIOCRDHPOS: 2077 PENDING_MOUNT_CHECK(softc, periph, dev); 2078 error = sardpos(periph, 1, (u_int32_t *) arg); 2079 break; 2080 case MTIOCSLOCATE: 2081 case MTIOCHLOCATE: { 2082 struct mtlocate locate_info; 2083 int hard; 2084 2085 bzero(&locate_info, sizeof(locate_info)); 2086 locate_info.logical_id = *((uint32_t *)arg); 2087 if (cmd == MTIOCSLOCATE) 2088 hard = 0; 2089 else 2090 hard = 1; 2091 2092 PENDING_MOUNT_CHECK(softc, periph, dev); 2093 2094 error = sasetpos(periph, hard, &locate_info); 2095 break; 2096 } 2097 case MTIOCEXTLOCATE: 2098 PENDING_MOUNT_CHECK(softc, periph, dev); 2099 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2100 softc->flags &= 2101 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2102 softc->flags &= ~SA_FLAG_ERR_PENDING; 2103 softc->filemarks = 0; 2104 break; 2105 case MTIOCGETEOTMODEL: 2106 error = 0; 2107 if (softc->quirks & SA_QUIRK_1FM) 2108 mode = 1; 2109 else 2110 mode = 2; 2111 *((u_int32_t *) arg) = mode; 2112 break; 2113 case MTIOCSETEOTMODEL: 2114 error = 0; 2115 switch (*((u_int32_t *) arg)) { 2116 case 1: 2117 softc->quirks &= ~SA_QUIRK_2FM; 2118 softc->quirks |= SA_QUIRK_1FM; 2119 break; 2120 case 2: 2121 softc->quirks &= ~SA_QUIRK_1FM; 2122 softc->quirks |= SA_QUIRK_2FM; 2123 break; 2124 default: 2125 error = EINVAL; 2126 break; 2127 } 2128 break; 2129 case MTIOCRBLIM: { 2130 struct mtrblim *rblim; 2131 2132 rblim = (struct mtrblim *)arg; 2133 2134 rblim->granularity = softc->blk_gran; 2135 rblim->min_block_length = softc->min_blk; 2136 rblim->max_block_length = softc->max_blk; 2137 break; 2138 } 2139 default: 2140 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2141 break; 2142 } 2143 2144 /* 2145 * Check to see if we cleared a frozen state 2146 */ 2147 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2148 switch(cmd) { 2149 case MTIOCRDSPOS: 2150 case MTIOCRDHPOS: 2151 case MTIOCSLOCATE: 2152 case MTIOCHLOCATE: 2153 /* 2154 * XXX KDM look at this. 2155 */ 2156 softc->fileno = (daddr_t) -1; 2157 softc->blkno = (daddr_t) -1; 2158 softc->rep_blkno = (daddr_t) -1; 2159 softc->rep_fileno = (daddr_t) -1; 2160 softc->partition = (daddr_t) -1; 2161 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2162 xpt_print(periph->path, 2163 "tape state now unfrozen.\n"); 2164 break; 2165 default: 2166 break; 2167 } 2168 } 2169 if (didlockperiph) { 2170 cam_periph_unhold(periph); 2171 } 2172 cam_periph_unlock(periph); 2173 return (error); 2174 } 2175 2176 static void 2177 sainit(void) 2178 { 2179 cam_status status; 2180 2181 /* 2182 * Install a global async callback. 2183 */ 2184 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2185 2186 if (status != CAM_REQ_CMP) { 2187 printf("sa: Failed to attach master async callback " 2188 "due to status 0x%x!\n", status); 2189 } 2190 } 2191 2192 static void 2193 sadevgonecb(void *arg) 2194 { 2195 struct cam_periph *periph; 2196 struct mtx *mtx; 2197 struct sa_softc *softc; 2198 2199 periph = (struct cam_periph *)arg; 2200 softc = (struct sa_softc *)periph->softc; 2201 2202 mtx = cam_periph_mtx(periph); 2203 mtx_lock(mtx); 2204 2205 softc->num_devs_to_destroy--; 2206 if (softc->num_devs_to_destroy == 0) { 2207 int i; 2208 2209 /* 2210 * When we have gotten all of our callbacks, we will get 2211 * no more close calls from devfs. So if we have any 2212 * dangling opens, we need to release the reference held 2213 * for that particular context. 2214 */ 2215 for (i = 0; i < softc->open_count; i++) 2216 cam_periph_release_locked(periph); 2217 2218 softc->open_count = 0; 2219 2220 /* 2221 * Release the reference held for devfs, all of our 2222 * instances are gone now. 2223 */ 2224 cam_periph_release_locked(periph); 2225 } 2226 2227 /* 2228 * We reference the lock directly here, instead of using 2229 * cam_periph_unlock(). The reason is that the final call to 2230 * cam_periph_release_locked() above could result in the periph 2231 * getting freed. If that is the case, dereferencing the periph 2232 * with a cam_periph_unlock() call would cause a page fault. 2233 */ 2234 mtx_unlock(mtx); 2235 } 2236 2237 static void 2238 saoninvalidate(struct cam_periph *periph) 2239 { 2240 struct sa_softc *softc; 2241 2242 softc = (struct sa_softc *)periph->softc; 2243 2244 /* 2245 * De-register any async callbacks. 2246 */ 2247 xpt_register_async(0, saasync, periph, periph->path); 2248 2249 softc->flags |= SA_FLAG_INVALID; 2250 2251 /* 2252 * Return all queued I/O with ENXIO. 2253 * XXX Handle any transactions queued to the card 2254 * with XPT_ABORT_CCB. 2255 */ 2256 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2257 softc->queue_count = 0; 2258 2259 /* 2260 * Tell devfs that all of our devices have gone away, and ask for a 2261 * callback when it has cleaned up its state. 2262 */ 2263 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2264 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2265 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2266 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2267 } 2268 2269 static void 2270 sacleanup(struct cam_periph *periph) 2271 { 2272 struct sa_softc *softc; 2273 2274 softc = (struct sa_softc *)periph->softc; 2275 2276 cam_periph_unlock(periph); 2277 2278 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2279 && (((softc->sysctl_timeout_tree != NULL) 2280 && (sysctl_ctx_free(&softc->sysctl_timeout_ctx) != 0)) 2281 || sysctl_ctx_free(&softc->sysctl_ctx) != 0)) 2282 xpt_print(periph->path, "can't remove sysctl context\n"); 2283 2284 cam_periph_lock(periph); 2285 2286 devstat_remove_entry(softc->device_stats); 2287 2288 free(softc, M_SCSISA); 2289 } 2290 2291 static void 2292 saasync(void *callback_arg, u_int32_t code, 2293 struct cam_path *path, void *arg) 2294 { 2295 struct cam_periph *periph; 2296 2297 periph = (struct cam_periph *)callback_arg; 2298 switch (code) { 2299 case AC_FOUND_DEVICE: 2300 { 2301 struct ccb_getdev *cgd; 2302 cam_status status; 2303 2304 cgd = (struct ccb_getdev *)arg; 2305 if (cgd == NULL) 2306 break; 2307 2308 if (cgd->protocol != PROTO_SCSI) 2309 break; 2310 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2311 break; 2312 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2313 break; 2314 2315 /* 2316 * Allocate a peripheral instance for 2317 * this device and start the probe 2318 * process. 2319 */ 2320 status = cam_periph_alloc(saregister, saoninvalidate, 2321 sacleanup, sastart, 2322 "sa", CAM_PERIPH_BIO, path, 2323 saasync, AC_FOUND_DEVICE, cgd); 2324 2325 if (status != CAM_REQ_CMP 2326 && status != CAM_REQ_INPROG) 2327 printf("saasync: Unable to probe new device " 2328 "due to status 0x%x\n", status); 2329 break; 2330 } 2331 default: 2332 cam_periph_async(periph, code, path, arg); 2333 break; 2334 } 2335 } 2336 2337 static void 2338 sasetupdev(struct sa_softc *softc, struct cdev *dev) 2339 { 2340 2341 dev->si_iosize_max = softc->maxio; 2342 dev->si_flags |= softc->si_flags; 2343 /* 2344 * Keep a count of how many non-alias devices we have created, 2345 * so we can make sure we clean them all up on shutdown. Aliases 2346 * are cleaned up when we destroy the device they're an alias for. 2347 */ 2348 if ((dev->si_flags & SI_ALIAS) == 0) 2349 softc->num_devs_to_destroy++; 2350 } 2351 2352 /* 2353 * Load the global (for all sa(4) instances) and per-instance tunable 2354 * values for timeouts for various sa(4) commands. This should be run 2355 * after the default timeouts are fetched from the drive, so the user's 2356 * preference will override the drive's defaults. 2357 */ 2358 static void 2359 saloadtotunables(struct sa_softc *softc) 2360 { 2361 int i; 2362 char tmpstr[80]; 2363 2364 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) { 2365 int tmpval, retval; 2366 2367 /* First grab any global timeout setting */ 2368 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.timeout.%s", 2369 sa_default_timeouts[i].desc); 2370 retval = TUNABLE_INT_FETCH(tmpstr, &tmpval); 2371 if (retval != 0) 2372 softc->timeout_info[i] = tmpval; 2373 2374 /* 2375 * Then overwrite any global timeout settings with 2376 * per-instance timeout settings. 2377 */ 2378 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.timeout.%s", 2379 softc->periph->unit_number, sa_default_timeouts[i].desc); 2380 retval = TUNABLE_INT_FETCH(tmpstr, &tmpval); 2381 if (retval != 0) 2382 softc->timeout_info[i] = tmpval; 2383 } 2384 } 2385 2386 static void 2387 sasysctlinit(void *context, int pending) 2388 { 2389 struct cam_periph *periph; 2390 struct sa_softc *softc; 2391 char tmpstr[64], tmpstr2[16]; 2392 int i; 2393 2394 periph = (struct cam_periph *)context; 2395 /* 2396 * If the periph is invalid, no need to setup the sysctls. 2397 */ 2398 if (periph->flags & CAM_PERIPH_INVALID) 2399 goto bailout; 2400 2401 softc = (struct sa_softc *)periph->softc; 2402 2403 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2404 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2405 2406 sysctl_ctx_init(&softc->sysctl_ctx); 2407 softc->flags |= SA_FLAG_SCTX_INIT; 2408 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 2409 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2410 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 2411 if (softc->sysctl_tree == NULL) 2412 goto bailout; 2413 2414 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2415 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2416 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2417 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2418 OID_AUTO, "maxio", CTLFLAG_RD, 2419 &softc->maxio, 0, "Maximum I/O size"); 2420 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2421 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2422 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2423 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2424 OID_AUTO, "inject_eom", CTLFLAG_RW, 2425 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2426 2427 sysctl_ctx_init(&softc->sysctl_timeout_ctx); 2428 softc->sysctl_timeout_tree = SYSCTL_ADD_NODE(&softc->sysctl_timeout_ctx, 2429 SYSCTL_CHILDREN(softc->sysctl_tree), OID_AUTO, "timeout", 2430 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Timeouts"); 2431 if (softc->sysctl_timeout_tree == NULL) 2432 goto bailout; 2433 2434 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) { 2435 snprintf(tmpstr, sizeof(tmpstr), "%s timeout", 2436 sa_default_timeouts[i].desc); 2437 2438 /* 2439 * Do NOT change this sysctl declaration to also load any 2440 * tunable values for this sa(4) instance. In other words, 2441 * do not change this to CTLFLAG_RWTUN. This function is 2442 * run in parallel with the probe routine that fetches 2443 * recommended timeout values from the tape drive, and we 2444 * don't want the values from the drive to override the 2445 * user's preference. 2446 */ 2447 SYSCTL_ADD_INT(&softc->sysctl_timeout_ctx, 2448 SYSCTL_CHILDREN(softc->sysctl_timeout_tree), 2449 OID_AUTO, sa_default_timeouts[i].desc, CTLFLAG_RW, 2450 &softc->timeout_info[i], 0, tmpstr); 2451 } 2452 2453 bailout: 2454 /* 2455 * Release the reference that was held when this task was enqueued. 2456 */ 2457 cam_periph_release(periph); 2458 } 2459 2460 static cam_status 2461 saregister(struct cam_periph *periph, void *arg) 2462 { 2463 struct sa_softc *softc; 2464 struct ccb_getdev *cgd; 2465 struct ccb_pathinq cpi; 2466 struct make_dev_args args; 2467 caddr_t match; 2468 char tmpstr[80]; 2469 int error; 2470 int i; 2471 2472 cgd = (struct ccb_getdev *)arg; 2473 if (cgd == NULL) { 2474 printf("saregister: no getdev CCB, can't register device\n"); 2475 return (CAM_REQ_CMP_ERR); 2476 } 2477 2478 softc = (struct sa_softc *) 2479 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2480 if (softc == NULL) { 2481 printf("saregister: Unable to probe new device. " 2482 "Unable to allocate softc\n"); 2483 return (CAM_REQ_CMP_ERR); 2484 } 2485 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2486 softc->state = SA_STATE_NORMAL; 2487 softc->fileno = (daddr_t) -1; 2488 softc->blkno = (daddr_t) -1; 2489 softc->rep_fileno = (daddr_t) -1; 2490 softc->rep_blkno = (daddr_t) -1; 2491 softc->partition = (daddr_t) -1; 2492 softc->bop = -1; 2493 softc->eop = -1; 2494 softc->bpew = -1; 2495 2496 bioq_init(&softc->bio_queue); 2497 softc->periph = periph; 2498 periph->softc = softc; 2499 2500 /* 2501 * See if this device has any quirks. 2502 */ 2503 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2504 (caddr_t)sa_quirk_table, 2505 nitems(sa_quirk_table), 2506 sizeof(*sa_quirk_table), scsi_inquiry_match); 2507 2508 if (match != NULL) { 2509 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2510 softc->last_media_blksize = 2511 ((struct sa_quirk_entry *)match)->prefblk; 2512 } else 2513 softc->quirks = SA_QUIRK_NONE; 2514 2515 2516 /* 2517 * Initialize the default timeouts. If this drive supports 2518 * timeout descriptors we'll overwrite these values with the 2519 * recommended timeouts from the drive. 2520 */ 2521 for (i = 0; i < SA_TIMEOUT_TYPE_MAX; i++) 2522 softc->timeout_info[i] = sa_default_timeouts[i].value; 2523 2524 /* 2525 * Long format data for READ POSITION was introduced in SSC, which 2526 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2527 * reports that it is SCSI-2 or older, it is unlikely to support 2528 * long position data, but it might. Some drives from that era 2529 * claim to be SCSI-2, but do support long position information. 2530 * So, instead of immediately disabling long position information 2531 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2532 * then disable long position information if we get an error. 2533 */ 2534 if (cgd->inq_data.version <= SCSI_REV_CCS) 2535 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2536 2537 /* 2538 * The SCSI REPORT SUPPORTED OPERATION CODES command was added in 2539 * SPC-4. That command optionally includes timeout data for 2540 * different commands. Timeout values can vary wildly among 2541 * different drives, so if the drive itself has recommended values, 2542 * we will try to use them. Set this flag to indicate we're going 2543 * to ask the drive for timeout data. This flag also tells us to 2544 * wait on loading timeout tunables so we can properly override 2545 * timeouts with any user-specified values. 2546 */ 2547 if (SID_ANSI_REV(&cgd->inq_data) >= SCSI_REV_SPC4) 2548 softc->flags |= SA_FLAG_RSOC_TO_TRY; 2549 2550 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2551 struct ccb_dev_advinfo cdai; 2552 struct scsi_vpd_extended_inquiry_data ext_inq; 2553 2554 bzero(&ext_inq, sizeof(ext_inq)); 2555 2556 memset(&cdai, 0, sizeof(cdai)); 2557 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2558 2559 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2560 cdai.flags = CDAI_FLAG_NONE; 2561 cdai.buftype = CDAI_TYPE_EXT_INQ; 2562 cdai.bufsiz = sizeof(ext_inq); 2563 cdai.buf = (uint8_t *)&ext_inq; 2564 xpt_action((union ccb *)&cdai); 2565 2566 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2567 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2568 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2569 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2570 softc->flags |= SA_FLAG_PROTECT_SUPP; 2571 } 2572 2573 xpt_path_inq(&cpi, periph->path); 2574 2575 /* 2576 * The SA driver supports a blocksize, but we don't know the 2577 * blocksize until we media is inserted. So, set a flag to 2578 * indicate that the blocksize is unavailable right now. 2579 */ 2580 cam_periph_unlock(periph); 2581 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2582 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2583 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2584 2585 /* 2586 * Load the default value that is either compiled in, or loaded 2587 * in the global kern.cam.sa.allow_io_split tunable. 2588 */ 2589 softc->allow_io_split = sa_allow_io_split; 2590 2591 /* 2592 * Load a per-instance tunable, if it exists. NOTE that this 2593 * tunable WILL GO AWAY in FreeBSD 11.0. 2594 */ 2595 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2596 periph->unit_number); 2597 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2598 2599 /* 2600 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2601 * the smaller of cpi.maxio or maxphys. 2602 */ 2603 if (cpi.maxio == 0) 2604 softc->maxio = DFLTPHYS; 2605 else if (cpi.maxio > maxphys) 2606 softc->maxio = maxphys; 2607 else 2608 softc->maxio = cpi.maxio; 2609 2610 /* 2611 * Record the controller's maximum I/O size so we can report it to 2612 * the user later. 2613 */ 2614 softc->cpi_maxio = cpi.maxio; 2615 2616 /* 2617 * By default we tell physio that we do not want our I/O split. 2618 * The user needs to have a 1:1 mapping between the size of his 2619 * write to a tape character device and the size of the write 2620 * that actually goes down to the drive. 2621 */ 2622 if (softc->allow_io_split == 0) 2623 softc->si_flags = SI_NOSPLIT; 2624 else 2625 softc->si_flags = 0; 2626 2627 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2628 2629 /* 2630 * If the SIM supports unmapped I/O, let physio know that we can 2631 * handle unmapped buffers. 2632 */ 2633 if (cpi.hba_misc & PIM_UNMAPPED) 2634 softc->si_flags |= SI_UNMAPPED; 2635 2636 /* 2637 * Acquire a reference to the periph before we create the devfs 2638 * instances for it. We'll release this reference once the devfs 2639 * instances have been freed. 2640 */ 2641 if (cam_periph_acquire(periph) != 0) { 2642 xpt_print(periph->path, "%s: lost periph during " 2643 "registration!\n", __func__); 2644 cam_periph_lock(periph); 2645 return (CAM_REQ_CMP_ERR); 2646 } 2647 2648 make_dev_args_init(&args); 2649 args.mda_devsw = &sa_cdevsw; 2650 args.mda_si_drv1 = softc->periph; 2651 args.mda_uid = UID_ROOT; 2652 args.mda_gid = GID_OPERATOR; 2653 args.mda_mode = 0660; 2654 2655 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2656 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2657 periph->periph_name, periph->unit_number); 2658 if (error != 0) { 2659 cam_periph_lock(periph); 2660 return (CAM_REQ_CMP_ERR); 2661 } 2662 sasetupdev(softc, softc->devs.ctl_dev); 2663 2664 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2665 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2666 periph->periph_name, periph->unit_number); 2667 if (error != 0) { 2668 cam_periph_lock(periph); 2669 return (CAM_REQ_CMP_ERR); 2670 } 2671 sasetupdev(softc, softc->devs.r_dev); 2672 2673 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2674 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2675 periph->periph_name, periph->unit_number); 2676 if (error != 0) { 2677 cam_periph_lock(periph); 2678 return (CAM_REQ_CMP_ERR); 2679 } 2680 sasetupdev(softc, softc->devs.nr_dev); 2681 2682 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2683 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2684 periph->periph_name, periph->unit_number); 2685 if (error != 0) { 2686 cam_periph_lock(periph); 2687 return (CAM_REQ_CMP_ERR); 2688 } 2689 sasetupdev(softc, softc->devs.er_dev); 2690 2691 cam_periph_lock(periph); 2692 2693 softc->density_type_bits[0] = 0; 2694 softc->density_type_bits[1] = SRDS_MEDIA; 2695 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2696 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2697 /* 2698 * Bump the peripheral refcount for the sysctl thread, in case we 2699 * get invalidated before the thread has a chance to run. Note 2700 * that this runs in parallel with the probe for the timeout 2701 * values. 2702 */ 2703 cam_periph_acquire(periph); 2704 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2705 2706 /* 2707 * Add an async callback so that we get 2708 * notified if this device goes away. 2709 */ 2710 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2711 2712 /* 2713 * See comment above, try fetching timeout values for drives that 2714 * might support it. Otherwise, use the defaults. 2715 * 2716 * We get timeouts from the following places in order of increasing 2717 * priority: 2718 * 1. Driver default timeouts. 2719 * 2. Timeouts loaded from the drive via REPORT SUPPORTED OPERATION 2720 * CODES. (We kick that off here if SA_FLAG_RSOC_TO_TRY is set.) 2721 * 3. Global loader tunables, used for all sa(4) driver instances on 2722 * a machine. 2723 * 4. Instance-specific loader tunables, used for say sa5. 2724 * 5. On the fly user sysctl changes. 2725 * 2726 * Each step will overwrite the timeout value set from the one 2727 * before, so you go from general to most specific. 2728 */ 2729 if (softc->flags & SA_FLAG_RSOC_TO_TRY) { 2730 /* 2731 * Bump the peripheral refcount while we are probing. 2732 */ 2733 cam_periph_acquire(periph); 2734 softc->state = SA_STATE_PROBE; 2735 xpt_schedule(periph, CAM_PRIORITY_DEV); 2736 } else { 2737 /* 2738 * This drive doesn't support Report Supported Operation 2739 * Codes, so we load the tunables at this point to bring 2740 * in any user preferences. 2741 */ 2742 saloadtotunables(softc); 2743 2744 xpt_announce_periph(periph, NULL); 2745 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2746 } 2747 2748 return (CAM_REQ_CMP); 2749 } 2750 2751 static void 2752 sastart(struct cam_periph *periph, union ccb *start_ccb) 2753 { 2754 struct sa_softc *softc; 2755 2756 softc = (struct sa_softc *)periph->softc; 2757 2758 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2759 2760 switch (softc->state) { 2761 case SA_STATE_NORMAL: 2762 { 2763 /* Pull a buffer from the queue and get going on it */ 2764 struct bio *bp; 2765 2766 /* 2767 * See if there is a buf with work for us to do.. 2768 */ 2769 bp = bioq_first(&softc->bio_queue); 2770 if (bp == NULL) { 2771 xpt_release_ccb(start_ccb); 2772 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2773 || (softc->inject_eom != 0)) { 2774 struct bio *done_bp; 2775 2776 if (softc->inject_eom != 0) { 2777 softc->flags |= SA_FLAG_EOM_PENDING; 2778 softc->inject_eom = 0; 2779 /* 2780 * If we're injecting EOM for writes, we 2781 * need to keep PEWS set for 3 queries 2782 * to cover 2 position requests from the 2783 * kernel via sagetpos(), and then allow 2784 * for one for the user to see the BPEW 2785 * flag (e.g. via mt status). After that, 2786 * it will be cleared. 2787 */ 2788 if (bp->bio_cmd == BIO_WRITE) 2789 softc->set_pews_status = 3; 2790 else 2791 softc->set_pews_status = 1; 2792 } 2793 again: 2794 softc->queue_count--; 2795 bioq_remove(&softc->bio_queue, bp); 2796 bp->bio_resid = bp->bio_bcount; 2797 done_bp = bp; 2798 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2799 /* 2800 * We have two different behaviors for 2801 * writes when we hit either Early Warning 2802 * or the PEWZ (Programmable Early Warning 2803 * Zone). The default behavior is that 2804 * for all writes that are currently 2805 * queued after the write where we saw the 2806 * early warning, we will return the write 2807 * with the residual equal to the count. 2808 * i.e. tell the application that 0 bytes 2809 * were written. 2810 * 2811 * The alternate behavior, which is enabled 2812 * when eot_warn is set, is that in 2813 * addition to setting the residual equal 2814 * to the count, we will set the error 2815 * to ENOSPC. 2816 * 2817 * In either case, once queued writes are 2818 * cleared out, we clear the error flag 2819 * (see below) and the application is free to 2820 * attempt to write more. 2821 */ 2822 if (softc->eot_warn != 0) { 2823 bp->bio_flags |= BIO_ERROR; 2824 bp->bio_error = ENOSPC; 2825 } else 2826 bp->bio_error = 0; 2827 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2828 /* 2829 * This can only happen if we're reading 2830 * in fixed length mode. In this case, 2831 * we dump the rest of the list the 2832 * same way. 2833 */ 2834 bp->bio_error = 0; 2835 if (bioq_first(&softc->bio_queue) != NULL) { 2836 biodone(done_bp); 2837 goto again; 2838 } 2839 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2840 bp->bio_error = EIO; 2841 bp->bio_flags |= BIO_ERROR; 2842 } 2843 bp = bioq_first(&softc->bio_queue); 2844 /* 2845 * Only if we have no other buffers queued up 2846 * do we clear the pending error flag. 2847 */ 2848 if (bp == NULL) 2849 softc->flags &= ~SA_FLAG_ERR_PENDING; 2850 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2851 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2852 "%d more buffers queued up\n", 2853 (softc->flags & SA_FLAG_ERR_PENDING), 2854 (bp != NULL)? "not " : " ", softc->queue_count)); 2855 xpt_release_ccb(start_ccb); 2856 biodone(done_bp); 2857 } else { 2858 u_int32_t length; 2859 2860 bioq_remove(&softc->bio_queue, bp); 2861 softc->queue_count--; 2862 2863 if ((bp->bio_cmd != BIO_READ) && 2864 (bp->bio_cmd != BIO_WRITE)) { 2865 biofinish(bp, NULL, EOPNOTSUPP); 2866 xpt_release_ccb(start_ccb); 2867 return; 2868 } 2869 length = bp->bio_bcount; 2870 2871 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2872 if (softc->blk_shift != 0) { 2873 length = length >> softc->blk_shift; 2874 } else if (softc->media_blksize != 0) { 2875 length = length / softc->media_blksize; 2876 } else { 2877 bp->bio_error = EIO; 2878 xpt_print(periph->path, "zero blocksize" 2879 " for FIXED length writes?\n"); 2880 biodone(bp); 2881 break; 2882 } 2883 #if 0 2884 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2885 ("issuing a %d fixed record %s\n", 2886 length, (bp->bio_cmd == BIO_READ)? "read" : 2887 "write")); 2888 #endif 2889 } else { 2890 #if 0 2891 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2892 ("issuing a %d variable byte %s\n", 2893 length, (bp->bio_cmd == BIO_READ)? "read" : 2894 "write")); 2895 #endif 2896 } 2897 devstat_start_transaction_bio(softc->device_stats, bp); 2898 /* 2899 * Some people have theorized that we should 2900 * suppress illegal length indication if we are 2901 * running in variable block mode so that we don't 2902 * have to request sense every time our requested 2903 * block size is larger than the written block. 2904 * The residual information from the ccb allows 2905 * us to identify this situation anyway. The only 2906 * problem with this is that we will not get 2907 * information about blocks that are larger than 2908 * our read buffer unless we set the block size 2909 * in the mode page to something other than 0. 2910 * 2911 * I believe that this is a non-issue. If user apps 2912 * don't adjust their read size to match our record 2913 * size, that's just life. Anyway, the typical usage 2914 * would be to issue, e.g., 64KB reads and occasionally 2915 * have to do deal with 512 byte or 1KB intermediate 2916 * records. 2917 * 2918 * That said, though, we now support setting the 2919 * SILI bit on reads, and we set the blocksize to 4 2920 * bytes when we do that. This gives us 2921 * compatibility with software that wants this, 2922 * although the only real difference between that 2923 * and not setting the SILI bit on reads is that we 2924 * won't get a check condition on reads where our 2925 * request size is larger than the block on tape. 2926 * That probably only makes a real difference in 2927 * non-packetized SCSI, where you have to go back 2928 * to the drive to request sense and thus incur 2929 * more latency. 2930 */ 2931 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2932 MTIO_DSREG_RD : MTIO_DSREG_WR; 2933 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2934 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2935 SCSI_RW_READ : SCSI_RW_WRITE) | 2936 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2937 SCSI_RW_BIO : 0), softc->sili, 2938 (softc->flags & SA_FLAG_FIXED) != 0, length, 2939 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2940 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2941 (bp->bio_cmd == BIO_READ) ? 2942 softc->timeout_info[SA_TIMEOUT_READ] : 2943 softc->timeout_info[SA_TIMEOUT_WRITE]); 2944 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2945 start_ccb->ccb_h.ccb_bp = bp; 2946 bp = bioq_first(&softc->bio_queue); 2947 xpt_action(start_ccb); 2948 } 2949 2950 if (bp != NULL) { 2951 /* Have more work to do, so ensure we stay scheduled */ 2952 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2953 } 2954 break; 2955 } 2956 case SA_STATE_PROBE: { 2957 int num_opcodes; 2958 size_t alloc_len; 2959 uint8_t *params; 2960 2961 /* 2962 * This is an arbitrary number. An IBM LTO-6 drive reports 2963 * 67 entries, and an IBM LTO-9 drive reports 71 entries. 2964 * There can theoretically be more than 256 because 2965 * service actions of a particular opcode are reported 2966 * separately, but we're far enough ahead of the practical 2967 * number here that we don't need to implement logic to 2968 * retry if we don't get all the timeout descriptors. 2969 */ 2970 num_opcodes = 256; 2971 2972 alloc_len = num_opcodes * 2973 (sizeof(struct scsi_report_supported_opcodes_descr) + 2974 sizeof(struct scsi_report_supported_opcodes_timeout)); 2975 2976 params = malloc(alloc_len, M_SCSISA, M_NOWAIT| M_ZERO); 2977 if (params == NULL) { 2978 /* 2979 * If this happens, go with default 2980 * timeouts and announce the drive. 2981 */ 2982 saloadtotunables(softc); 2983 2984 softc->state = SA_STATE_NORMAL; 2985 2986 xpt_announce_periph(periph, NULL); 2987 xpt_announce_quirks(periph, softc->quirks, 2988 SA_QUIRK_BIT_STRING); 2989 xpt_release_ccb(start_ccb); 2990 cam_periph_release_locked(periph); 2991 return; 2992 } 2993 2994 scsi_report_supported_opcodes(&start_ccb->csio, 2995 /*retries*/ 3, 2996 /*cbfcnp*/ sadone, 2997 /*tag_action*/ MSG_SIMPLE_Q_TAG, 2998 /*options*/ RSO_RCTD, 2999 /*req_opcode*/ 0, 3000 /*req_service_action*/ 0, 3001 /*data_ptr*/ params, 3002 /*dxfer_len*/ alloc_len, 3003 /*sense_len*/ SSD_FULL_SIZE, 3004 /*timeout*/ softc->timeout_info[SA_TIMEOUT_TUR]); 3005 3006 xpt_action(start_ccb); 3007 break; 3008 } 3009 case SA_STATE_ABNORMAL: 3010 default: 3011 panic("state 0x%x in sastart", softc->state); 3012 break; 3013 } 3014 } 3015 3016 static void 3017 sadone(struct cam_periph *periph, union ccb *done_ccb) 3018 { 3019 struct sa_softc *softc; 3020 struct ccb_scsiio *csio; 3021 struct bio *bp; 3022 int error; 3023 3024 softc = (struct sa_softc *)periph->softc; 3025 csio = &done_ccb->csio; 3026 error = 0; 3027 3028 if (softc->state == SA_STATE_NORMAL) { 3029 softc->dsreg = MTIO_DSREG_REST; 3030 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 3031 3032 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 3033 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 3034 /* 3035 * A retry was scheduled, so just return. 3036 */ 3037 return; 3038 } 3039 } 3040 } else if (softc->state == SA_STATE_PROBE) { 3041 bp = NULL; 3042 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 3043 /* 3044 * Note that on probe, we just run through 3045 * cam_periph_error(), since saerror() has a lot of 3046 * special handling for I/O errors. We don't need 3047 * that to get the opcodes. We either succeed 3048 * after a retry or two, or give up. We don't 3049 * print sense, we don't need to worry the user if 3050 * this drive doesn't support timeout descriptors. 3051 */ 3052 if ((error = cam_periph_error(done_ccb, 0, 3053 SF_NO_PRINT)) == ERESTART) { 3054 /* 3055 * A retry was scheduled, so just return. 3056 */ 3057 return; 3058 } else if (error != 0) { 3059 /* We failed to get opcodes. Give up. */ 3060 3061 saloadtotunables(softc); 3062 3063 softc->state = SA_STATE_NORMAL; 3064 3065 xpt_release_ccb(done_ccb); 3066 3067 xpt_announce_periph(periph, NULL); 3068 xpt_announce_quirks(periph, softc->quirks, 3069 SA_QUIRK_BIT_STRING); 3070 cam_periph_release_locked(periph); 3071 return; 3072 } 3073 } 3074 /* 3075 * At this point, we have succeeded, so load the timeouts 3076 * and go into the normal state. 3077 */ 3078 softc->state = SA_STATE_NORMAL; 3079 3080 /* 3081 * First, load the timeouts we got from the drive. 3082 */ 3083 saloadtimeouts(softc, done_ccb); 3084 3085 /* 3086 * Next, overwrite the timeouts from the drive with any 3087 * loader tunables that the user set. 3088 */ 3089 saloadtotunables(softc); 3090 3091 xpt_release_ccb(done_ccb); 3092 xpt_announce_periph(periph, NULL); 3093 xpt_announce_quirks(periph, softc->quirks, 3094 SA_QUIRK_BIT_STRING); 3095 cam_periph_release_locked(periph); 3096 return; 3097 } else { 3098 panic("state 0x%x in sadone", softc->state); 3099 } 3100 3101 if (error == EIO) { 3102 /* 3103 * Catastrophic error. Mark the tape as frozen 3104 * (we no longer know tape position). 3105 * 3106 * Return all queued I/O with EIO, and unfreeze 3107 * our queue so that future transactions that 3108 * attempt to fix this problem can get to the 3109 * device. 3110 * 3111 */ 3112 3113 softc->flags |= SA_FLAG_TAPE_FROZEN; 3114 bioq_flush(&softc->bio_queue, NULL, EIO); 3115 } 3116 if (error != 0) { 3117 bp->bio_resid = bp->bio_bcount; 3118 bp->bio_error = error; 3119 bp->bio_flags |= BIO_ERROR; 3120 /* 3121 * In the error case, position is updated in saerror. 3122 */ 3123 } else { 3124 bp->bio_resid = csio->resid; 3125 bp->bio_error = 0; 3126 if (csio->resid != 0) { 3127 bp->bio_flags |= BIO_ERROR; 3128 } 3129 if (bp->bio_cmd == BIO_WRITE) { 3130 softc->flags |= SA_FLAG_TAPE_WRITTEN; 3131 softc->filemarks = 0; 3132 } 3133 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 3134 (softc->blkno != (daddr_t) -1)) { 3135 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3136 u_int32_t l; 3137 if (softc->blk_shift != 0) { 3138 l = bp->bio_bcount >> 3139 softc->blk_shift; 3140 } else { 3141 l = bp->bio_bcount / 3142 softc->media_blksize; 3143 } 3144 softc->blkno += (daddr_t) l; 3145 } else { 3146 softc->blkno++; 3147 } 3148 } 3149 } 3150 /* 3151 * If we had an error (immediate or pending), 3152 * release the device queue now. 3153 */ 3154 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 3155 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 3156 if (error || bp->bio_resid) { 3157 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3158 ("error %d resid %ld count %ld\n", error, 3159 bp->bio_resid, bp->bio_bcount)); 3160 } 3161 biofinish(bp, softc->device_stats, 0); 3162 xpt_release_ccb(done_ccb); 3163 } 3164 3165 /* 3166 * Mount the tape (make sure it's ready for I/O). 3167 */ 3168 static int 3169 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 3170 { 3171 struct sa_softc *softc; 3172 union ccb *ccb; 3173 int error; 3174 3175 /* 3176 * oflags can be checked for 'kind' of open (read-only check) - later 3177 * dev can be checked for a control-mode or compression open - later 3178 */ 3179 UNUSED_PARAMETER(oflags); 3180 UNUSED_PARAMETER(dev); 3181 3182 softc = (struct sa_softc *)periph->softc; 3183 3184 /* 3185 * This should determine if something has happened since the last 3186 * open/mount that would invalidate the mount. We do *not* want 3187 * to retry this command- we just want the status. But we only 3188 * do this if we're mounted already- if we're not mounted, 3189 * we don't care about the unit read state and can instead use 3190 * this opportunity to attempt to reserve the tape unit. 3191 */ 3192 3193 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 3194 ccb = cam_periph_getccb(periph, 1); 3195 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3196 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3197 softc->timeout_info[SA_TIMEOUT_TUR]); 3198 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3199 softc->device_stats); 3200 if (error == ENXIO) { 3201 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 3202 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3203 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3204 softc->timeout_info[SA_TIMEOUT_TUR]); 3205 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3206 softc->device_stats); 3207 } else if (error) { 3208 /* 3209 * We don't need to freeze the tape because we 3210 * will now attempt to rewind/load it. 3211 */ 3212 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 3213 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3214 xpt_print(periph->path, 3215 "error %d on TUR in samount\n", error); 3216 } 3217 } 3218 } else { 3219 error = sareservereleaseunit(periph, TRUE); 3220 if (error) { 3221 return (error); 3222 } 3223 ccb = cam_periph_getccb(periph, 1); 3224 scsi_test_unit_ready(&ccb->csio, 0, NULL, 3225 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 3226 softc->timeout_info[SA_TIMEOUT_TUR]); 3227 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3228 softc->device_stats); 3229 } 3230 3231 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 3232 struct scsi_read_block_limits_data *rblim = NULL; 3233 int comp_enabled, comp_supported; 3234 u_int8_t write_protect, guessing = 0; 3235 3236 /* 3237 * Clear out old state. 3238 */ 3239 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 3240 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 3241 softc->filemarks = 0; 3242 3243 /* 3244 * *Very* first off, make sure we're loaded to BOT. 3245 */ 3246 scsi_load_unload(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3247 FALSE, FALSE, 1, SSD_FULL_SIZE, 3248 softc->timeout_info[SA_TIMEOUT_LOAD]); 3249 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3250 softc->device_stats); 3251 3252 /* 3253 * In case this doesn't work, do a REWIND instead 3254 */ 3255 if (error) { 3256 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 3257 FALSE, SSD_FULL_SIZE, 3258 softc->timeout_info[SA_TIMEOUT_REWIND]); 3259 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3260 softc->device_stats); 3261 } 3262 if (error) { 3263 xpt_release_ccb(ccb); 3264 goto exit; 3265 } 3266 3267 /* 3268 * Do a dummy test read to force access to the 3269 * media so that the drive will really know what's 3270 * there. We actually don't really care what the 3271 * blocksize on tape is and don't expect to really 3272 * read a full record. 3273 */ 3274 rblim = (struct scsi_read_block_limits_data *) 3275 malloc(8192, M_SCSISA, M_NOWAIT); 3276 if (rblim == NULL) { 3277 xpt_print(periph->path, "no memory for test read\n"); 3278 xpt_release_ccb(ccb); 3279 error = ENOMEM; 3280 goto exit; 3281 } 3282 3283 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 3284 scsi_sa_read_write(&ccb->csio, 0, NULL, 3285 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 3286 (void *) rblim, 8192, SSD_FULL_SIZE, 3287 softc->timeout_info[SA_TIMEOUT_READ]); 3288 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3289 softc->device_stats); 3290 scsi_rewind(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 3291 FALSE, SSD_FULL_SIZE, 3292 softc->timeout_info[SA_TIMEOUT_REWIND]); 3293 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3294 SF_NO_PRINT | SF_RETRY_UA, 3295 softc->device_stats); 3296 if (error) { 3297 xpt_print(periph->path, 3298 "unable to rewind after test read\n"); 3299 xpt_release_ccb(ccb); 3300 goto exit; 3301 } 3302 } 3303 3304 /* 3305 * Next off, determine block limits. 3306 */ 3307 scsi_read_block_limits(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 3308 rblim, SSD_FULL_SIZE, 3309 softc->timeout_info[SA_TIMEOUT_READ_BLOCK_LIMITS]); 3310 3311 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3312 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3313 3314 xpt_release_ccb(ccb); 3315 3316 if (error != 0) { 3317 /* 3318 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3319 * a MANDATORY command. Anyway- it doesn't matter- 3320 * we can proceed anyway. 3321 */ 3322 softc->blk_gran = 0; 3323 softc->max_blk = ~0; 3324 softc->min_blk = 0; 3325 } else { 3326 if (softc->scsi_rev >= SCSI_REV_SPC) { 3327 softc->blk_gran = RBL_GRAN(rblim); 3328 } else { 3329 softc->blk_gran = 0; 3330 } 3331 /* 3332 * We take max_blk == min_blk to mean a default to 3333 * fixed mode- but note that whatever we get out of 3334 * sagetparams below will actually determine whether 3335 * we are actually *in* fixed mode. 3336 */ 3337 softc->max_blk = scsi_3btoul(rblim->maximum); 3338 softc->min_blk = scsi_2btoul(rblim->minimum); 3339 } 3340 /* 3341 * Next, perform a mode sense to determine 3342 * current density, blocksize, compression etc. 3343 */ 3344 error = sagetparams(periph, SA_PARAM_ALL, 3345 &softc->media_blksize, 3346 &softc->media_density, 3347 &softc->media_numblks, 3348 &softc->buffer_mode, &write_protect, 3349 &softc->speed, &comp_supported, 3350 &comp_enabled, &softc->comp_algorithm, 3351 NULL, NULL, 0, 0); 3352 3353 if (error != 0) { 3354 /* 3355 * We could work a little harder here. We could 3356 * adjust our attempts to get information. It 3357 * might be an ancient tape drive. If someone 3358 * nudges us, we'll do that. 3359 */ 3360 goto exit; 3361 } 3362 3363 /* 3364 * If no quirk has determined that this is a device that is 3365 * preferred to be in fixed or variable mode, now is the time 3366 * to find out. 3367 */ 3368 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3369 guessing = 1; 3370 /* 3371 * This could be expensive to find out. Luckily we 3372 * only need to do this once. If we start out in 3373 * 'default' mode, try and set ourselves to one 3374 * of the densities that would determine a wad 3375 * of other stuff. Go from highest to lowest. 3376 */ 3377 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3378 int i; 3379 static u_int8_t ctry[] = { 3380 SCSI_DENSITY_HALFINCH_PE, 3381 SCSI_DENSITY_HALFINCH_6250C, 3382 SCSI_DENSITY_HALFINCH_6250, 3383 SCSI_DENSITY_HALFINCH_1600, 3384 SCSI_DENSITY_HALFINCH_800, 3385 SCSI_DENSITY_QIC_4GB, 3386 SCSI_DENSITY_QIC_2GB, 3387 SCSI_DENSITY_QIC_525_320, 3388 SCSI_DENSITY_QIC_150, 3389 SCSI_DENSITY_QIC_120, 3390 SCSI_DENSITY_QIC_24, 3391 SCSI_DENSITY_QIC_11_9TRK, 3392 SCSI_DENSITY_QIC_11_4TRK, 3393 SCSI_DENSITY_QIC_1320, 3394 SCSI_DENSITY_QIC_3080, 3395 0 3396 }; 3397 for (i = 0; ctry[i]; i++) { 3398 error = sasetparams(periph, 3399 SA_PARAM_DENSITY, 0, ctry[i], 3400 0, SF_NO_PRINT); 3401 if (error == 0) { 3402 softc->media_density = ctry[i]; 3403 break; 3404 } 3405 } 3406 } 3407 switch (softc->media_density) { 3408 case SCSI_DENSITY_QIC_11_4TRK: 3409 case SCSI_DENSITY_QIC_11_9TRK: 3410 case SCSI_DENSITY_QIC_24: 3411 case SCSI_DENSITY_QIC_120: 3412 case SCSI_DENSITY_QIC_150: 3413 case SCSI_DENSITY_QIC_525_320: 3414 case SCSI_DENSITY_QIC_1320: 3415 case SCSI_DENSITY_QIC_3080: 3416 softc->quirks &= ~SA_QUIRK_2FM; 3417 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3418 softc->last_media_blksize = 512; 3419 break; 3420 case SCSI_DENSITY_QIC_4GB: 3421 case SCSI_DENSITY_QIC_2GB: 3422 softc->quirks &= ~SA_QUIRK_2FM; 3423 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3424 softc->last_media_blksize = 1024; 3425 break; 3426 default: 3427 softc->last_media_blksize = 3428 softc->media_blksize; 3429 softc->quirks |= SA_QUIRK_VARIABLE; 3430 break; 3431 } 3432 } 3433 3434 /* 3435 * If no quirk has determined that this is a device that needs 3436 * to have 2 Filemarks at EOD, now is the time to find out. 3437 */ 3438 3439 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3440 switch (softc->media_density) { 3441 case SCSI_DENSITY_HALFINCH_800: 3442 case SCSI_DENSITY_HALFINCH_1600: 3443 case SCSI_DENSITY_HALFINCH_6250: 3444 case SCSI_DENSITY_HALFINCH_6250C: 3445 case SCSI_DENSITY_HALFINCH_PE: 3446 softc->quirks &= ~SA_QUIRK_1FM; 3447 softc->quirks |= SA_QUIRK_2FM; 3448 break; 3449 default: 3450 break; 3451 } 3452 } 3453 3454 /* 3455 * Now validate that some info we got makes sense. 3456 */ 3457 if ((softc->max_blk < softc->media_blksize) || 3458 (softc->min_blk > softc->media_blksize && 3459 softc->media_blksize)) { 3460 xpt_print(periph->path, 3461 "BLOCK LIMITS (%d..%d) could not match current " 3462 "block settings (%d)- adjusting\n", softc->min_blk, 3463 softc->max_blk, softc->media_blksize); 3464 softc->max_blk = softc->min_blk = 3465 softc->media_blksize; 3466 } 3467 3468 /* 3469 * Now put ourselves into the right frame of mind based 3470 * upon quirks... 3471 */ 3472 tryagain: 3473 /* 3474 * If we want to be in FIXED mode and our current blocksize 3475 * is not equal to our last blocksize (if nonzero), try and 3476 * set ourselves to this last blocksize (as the 'preferred' 3477 * block size). The initial quirkmatch at registry sets the 3478 * initial 'last' blocksize. If, for whatever reason, this 3479 * 'last' blocksize is zero, set the blocksize to 512, 3480 * or min_blk if that's larger. 3481 */ 3482 if ((softc->quirks & SA_QUIRK_FIXED) && 3483 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3484 (softc->media_blksize != softc->last_media_blksize)) { 3485 softc->media_blksize = softc->last_media_blksize; 3486 if (softc->media_blksize == 0) { 3487 softc->media_blksize = 512; 3488 if (softc->media_blksize < softc->min_blk) { 3489 softc->media_blksize = softc->min_blk; 3490 } 3491 } 3492 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3493 softc->media_blksize, 0, 0, SF_NO_PRINT); 3494 if (error) { 3495 xpt_print(periph->path, 3496 "unable to set fixed blocksize to %d\n", 3497 softc->media_blksize); 3498 goto exit; 3499 } 3500 } 3501 3502 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3503 (softc->media_blksize != 0)) { 3504 softc->last_media_blksize = softc->media_blksize; 3505 softc->media_blksize = 0; 3506 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3507 0, 0, 0, SF_NO_PRINT); 3508 if (error) { 3509 /* 3510 * If this fails and we were guessing, just 3511 * assume that we got it wrong and go try 3512 * fixed block mode. Don't even check against 3513 * density code at this point. 3514 */ 3515 if (guessing) { 3516 softc->quirks &= ~SA_QUIRK_VARIABLE; 3517 softc->quirks |= SA_QUIRK_FIXED; 3518 if (softc->last_media_blksize == 0) 3519 softc->last_media_blksize = 512; 3520 goto tryagain; 3521 } 3522 xpt_print(periph->path, 3523 "unable to set variable blocksize\n"); 3524 goto exit; 3525 } 3526 } 3527 3528 /* 3529 * Now that we have the current block size, 3530 * set up some parameters for sastart's usage. 3531 */ 3532 if (softc->media_blksize) { 3533 softc->flags |= SA_FLAG_FIXED; 3534 if (powerof2(softc->media_blksize)) { 3535 softc->blk_shift = 3536 ffs(softc->media_blksize) - 1; 3537 softc->blk_mask = softc->media_blksize - 1; 3538 } else { 3539 softc->blk_mask = ~0; 3540 softc->blk_shift = 0; 3541 } 3542 } else { 3543 /* 3544 * The SCSI-3 spec allows 0 to mean "unspecified". 3545 * The SCSI-1 spec allows 0 to mean 'infinite'. 3546 * 3547 * Either works here. 3548 */ 3549 if (softc->max_blk == 0) { 3550 softc->max_blk = ~0; 3551 } 3552 softc->blk_shift = 0; 3553 if (softc->blk_gran != 0) { 3554 softc->blk_mask = softc->blk_gran - 1; 3555 } else { 3556 softc->blk_mask = 0; 3557 } 3558 } 3559 3560 if (write_protect) 3561 softc->flags |= SA_FLAG_TAPE_WP; 3562 3563 if (comp_supported) { 3564 if (softc->saved_comp_algorithm == 0) 3565 softc->saved_comp_algorithm = 3566 softc->comp_algorithm; 3567 softc->flags |= SA_FLAG_COMP_SUPP; 3568 if (comp_enabled) 3569 softc->flags |= SA_FLAG_COMP_ENABLED; 3570 } else 3571 softc->flags |= SA_FLAG_COMP_UNSUPP; 3572 3573 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3574 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3575 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3576 0, 0, SF_NO_PRINT); 3577 if (error == 0) { 3578 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3579 } else { 3580 xpt_print(periph->path, 3581 "unable to set buffered mode\n"); 3582 } 3583 error = 0; /* not an error */ 3584 } 3585 3586 if (error == 0) { 3587 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3588 } 3589 exit: 3590 if (rblim != NULL) 3591 free(rblim, M_SCSISA); 3592 3593 if (error != 0) { 3594 softc->dsreg = MTIO_DSREG_NIL; 3595 } else { 3596 softc->fileno = softc->blkno = 0; 3597 softc->rep_fileno = softc->rep_blkno = -1; 3598 softc->partition = 0; 3599 softc->dsreg = MTIO_DSREG_REST; 3600 } 3601 #ifdef SA_1FM_AT_EOD 3602 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3603 softc->quirks |= SA_QUIRK_1FM; 3604 #else 3605 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3606 softc->quirks |= SA_QUIRK_2FM; 3607 #endif 3608 } else 3609 xpt_release_ccb(ccb); 3610 3611 /* 3612 * If we return an error, we're not mounted any more, 3613 * so release any device reservation. 3614 */ 3615 if (error != 0) { 3616 (void) sareservereleaseunit(periph, FALSE); 3617 } else { 3618 /* 3619 * Clear I/O residual. 3620 */ 3621 softc->last_io_resid = 0; 3622 softc->last_ctl_resid = 0; 3623 } 3624 return (error); 3625 } 3626 3627 /* 3628 * How many filemarks do we need to write if we were to terminate the 3629 * tape session right now? Note that this can be a negative number 3630 */ 3631 3632 static int 3633 samarkswanted(struct cam_periph *periph) 3634 { 3635 int markswanted; 3636 struct sa_softc *softc; 3637 3638 softc = (struct sa_softc *)periph->softc; 3639 markswanted = 0; 3640 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3641 markswanted++; 3642 if (softc->quirks & SA_QUIRK_2FM) 3643 markswanted++; 3644 } 3645 markswanted -= softc->filemarks; 3646 return (markswanted); 3647 } 3648 3649 static int 3650 sacheckeod(struct cam_periph *periph) 3651 { 3652 int error; 3653 int markswanted; 3654 3655 markswanted = samarkswanted(periph); 3656 3657 if (markswanted > 0) { 3658 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3659 } else { 3660 error = 0; 3661 } 3662 return (error); 3663 } 3664 3665 static int 3666 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3667 { 3668 static const char *toobig = 3669 "%d-byte tape record bigger than supplied buffer\n"; 3670 struct cam_periph *periph; 3671 struct sa_softc *softc; 3672 struct ccb_scsiio *csio; 3673 struct scsi_sense_data *sense; 3674 uint64_t resid = 0; 3675 int64_t info = 0; 3676 cam_status status; 3677 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3678 int sense_len; 3679 uint8_t stream_bits; 3680 3681 periph = xpt_path_periph(ccb->ccb_h.path); 3682 softc = (struct sa_softc *)periph->softc; 3683 csio = &ccb->csio; 3684 sense = &csio->sense_data; 3685 sense_len = csio->sense_len - csio->sense_resid; 3686 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3687 &asc, &ascq, /*show_errors*/ 1); 3688 if (asc != -1 && ascq != -1) 3689 aqvalid = 1; 3690 else 3691 aqvalid = 0; 3692 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3693 stream_valid = 1; 3694 else 3695 stream_valid = 0; 3696 error = 0; 3697 3698 status = csio->ccb_h.status & CAM_STATUS_MASK; 3699 3700 /* 3701 * Calculate/latch up, any residuals... We do this in a funny 2-step 3702 * so we can print stuff here if we have CAM_DEBUG enabled for this 3703 * unit. 3704 */ 3705 if (status == CAM_SCSI_STATUS_ERROR) { 3706 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3707 &info) == 0) { 3708 if ((softc->flags & SA_FLAG_FIXED) != 0) 3709 resid *= softc->media_blksize; 3710 } else { 3711 resid = csio->dxfer_len; 3712 info = resid; 3713 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3714 if (softc->media_blksize) 3715 info /= softc->media_blksize; 3716 } 3717 } 3718 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3719 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3720 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3721 sizeof (struct scsi_sense_data)); 3722 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3723 (int) csio->cdb_len); 3724 softc->last_io_resid = resid; 3725 softc->last_resid_was_io = 1; 3726 } else { 3727 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3728 sizeof (struct scsi_sense_data)); 3729 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3730 (int) csio->cdb_len); 3731 softc->last_ctl_resid = resid; 3732 softc->last_resid_was_io = 0; 3733 } 3734 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3735 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3736 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3737 sense_key, asc, ascq, status, 3738 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3739 csio->dxfer_len)); 3740 } else { 3741 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3742 ("Cam Status 0x%x\n", status)); 3743 } 3744 3745 switch (status) { 3746 case CAM_REQ_CMP: 3747 return (0); 3748 case CAM_SCSI_STATUS_ERROR: 3749 /* 3750 * If a read/write command, we handle it here. 3751 */ 3752 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3753 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3754 break; 3755 } 3756 /* 3757 * If this was just EOM/EOP, Filemark, Setmark, ILI or 3758 * PEW detected on a non read/write command, we assume 3759 * it's not an error and propagate the residual and return. 3760 */ 3761 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5) 3762 || (ascq == 0x07))) 3763 || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3764 csio->resid = resid; 3765 QFRLS(ccb); 3766 return (0); 3767 } 3768 /* 3769 * Otherwise, we let the common code handle this. 3770 */ 3771 return (cam_periph_error(ccb, cflgs, sflgs)); 3772 3773 /* 3774 * XXX: To Be Fixed 3775 * We cannot depend upon CAM honoring retry counts for these. 3776 */ 3777 case CAM_SCSI_BUS_RESET: 3778 case CAM_BDR_SENT: 3779 if (ccb->ccb_h.retry_count <= 0) { 3780 return (EIO); 3781 } 3782 /* FALLTHROUGH */ 3783 default: 3784 return (cam_periph_error(ccb, cflgs, sflgs)); 3785 } 3786 3787 /* 3788 * Handle filemark, end of tape, mismatched record sizes.... 3789 * From this point out, we're only handling read/write cases. 3790 * Handle writes && reads differently. 3791 */ 3792 3793 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3794 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3795 csio->resid = resid; 3796 error = ENOSPC; 3797 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3798 softc->flags |= SA_FLAG_EOM_PENDING; 3799 /* 3800 * Grotesque as it seems, the few times 3801 * I've actually seen a non-zero resid, 3802 * the tape drive actually lied and had 3803 * written all the data!. 3804 */ 3805 csio->resid = 0; 3806 } 3807 } else { 3808 csio->resid = resid; 3809 if (sense_key == SSD_KEY_BLANK_CHECK) { 3810 if (softc->quirks & SA_QUIRK_1FM) { 3811 error = 0; 3812 softc->flags |= SA_FLAG_EOM_PENDING; 3813 } else { 3814 error = EIO; 3815 } 3816 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3817 if (softc->flags & SA_FLAG_FIXED) { 3818 error = -1; 3819 softc->flags |= SA_FLAG_EOF_PENDING; 3820 } 3821 /* 3822 * Unconditionally, if we detected a filemark on a read, 3823 * mark that we've run moved a file ahead. 3824 */ 3825 if (softc->fileno != (daddr_t) -1) { 3826 softc->fileno++; 3827 softc->blkno = 0; 3828 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3829 } 3830 } 3831 } 3832 3833 /* 3834 * Incorrect Length usually applies to read, but can apply to writes. 3835 */ 3836 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3837 if (info < 0) { 3838 xpt_print(csio->ccb_h.path, toobig, 3839 csio->dxfer_len - info); 3840 csio->resid = csio->dxfer_len; 3841 error = EIO; 3842 } else { 3843 csio->resid = resid; 3844 if (softc->flags & SA_FLAG_FIXED) { 3845 softc->flags |= SA_FLAG_EIO_PENDING; 3846 } 3847 /* 3848 * Bump the block number if we hadn't seen a filemark. 3849 * Do this independent of errors (we've moved anyway). 3850 */ 3851 if ((stream_valid == 0) || 3852 (stream_bits & SSD_FILEMARK) == 0) { 3853 if (softc->blkno != (daddr_t) -1) { 3854 softc->blkno++; 3855 csio->ccb_h.ccb_pflags |= 3856 SA_POSITION_UPDATED; 3857 } 3858 } 3859 } 3860 } 3861 3862 if (error <= 0) { 3863 /* 3864 * Unfreeze the queue if frozen as we're not returning anything 3865 * to our waiters that would indicate an I/O error has occurred 3866 * (yet). 3867 */ 3868 QFRLS(ccb); 3869 error = 0; 3870 } 3871 return (error); 3872 } 3873 3874 static int 3875 sagetparams(struct cam_periph *periph, sa_params params_to_get, 3876 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3877 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3878 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3879 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3880 int dp_size, int prot_changeable) 3881 { 3882 union ccb *ccb; 3883 void *mode_buffer; 3884 struct scsi_mode_header_6 *mode_hdr; 3885 struct scsi_mode_blk_desc *mode_blk; 3886 int mode_buffer_len; 3887 struct sa_softc *softc; 3888 u_int8_t cpage; 3889 int error; 3890 cam_status status; 3891 3892 softc = (struct sa_softc *)periph->softc; 3893 ccb = cam_periph_getccb(periph, 1); 3894 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3895 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3896 else 3897 cpage = SA_DATA_COMPRESSION_PAGE; 3898 3899 retry: 3900 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3901 3902 if (params_to_get & SA_PARAM_COMPRESSION) { 3903 if (softc->quirks & SA_QUIRK_NOCOMP) { 3904 *comp_supported = FALSE; 3905 params_to_get &= ~SA_PARAM_COMPRESSION; 3906 } else 3907 mode_buffer_len += sizeof (sa_comp_t); 3908 } 3909 3910 /* XXX Fix M_NOWAIT */ 3911 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3912 if (mode_buffer == NULL) { 3913 xpt_release_ccb(ccb); 3914 return (ENOMEM); 3915 } 3916 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3917 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3918 3919 /* it is safe to retry this */ 3920 scsi_mode_sense(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3921 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3922 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3923 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 3924 3925 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3926 softc->device_stats); 3927 3928 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3929 3930 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3931 /* 3932 * Hmm. Let's see if we can try another page... 3933 * If we've already done that, give up on compression 3934 * for this device and remember this for the future 3935 * and attempt the request without asking for compression 3936 * info. 3937 */ 3938 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3939 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3940 goto retry; 3941 } 3942 softc->quirks |= SA_QUIRK_NOCOMP; 3943 free(mode_buffer, M_SCSISA); 3944 goto retry; 3945 } else if (status == CAM_SCSI_STATUS_ERROR) { 3946 /* Tell the user about the fatal error. */ 3947 scsi_sense_print(&ccb->csio); 3948 goto sagetparamsexit; 3949 } 3950 3951 /* 3952 * If the user only wants the compression information, and 3953 * the device doesn't send back the block descriptor, it's 3954 * no big deal. If the user wants more than just 3955 * compression, though, and the device doesn't pass back the 3956 * block descriptor, we need to send another mode sense to 3957 * get the block descriptor. 3958 */ 3959 if ((mode_hdr->blk_desc_len == 0) && 3960 (params_to_get & SA_PARAM_COMPRESSION) && 3961 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3962 /* 3963 * Decrease the mode buffer length by the size of 3964 * the compression page, to make sure the data 3965 * there doesn't get overwritten. 3966 */ 3967 mode_buffer_len -= sizeof (sa_comp_t); 3968 3969 /* 3970 * Now move the compression page that we presumably 3971 * got back down the memory chunk a little bit so 3972 * it doesn't get spammed. 3973 */ 3974 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3975 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3976 3977 /* 3978 * Now, we issue another mode sense and just ask 3979 * for the block descriptor, etc. 3980 */ 3981 3982 scsi_mode_sense(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3983 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3984 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3985 softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 3986 3987 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3988 softc->device_stats); 3989 3990 if (error != 0) 3991 goto sagetparamsexit; 3992 } 3993 3994 if (params_to_get & SA_PARAM_BLOCKSIZE) 3995 *blocksize = scsi_3btoul(mode_blk->blklen); 3996 3997 if (params_to_get & SA_PARAM_NUMBLOCKS) 3998 *numblocks = scsi_3btoul(mode_blk->nblocks); 3999 4000 if (params_to_get & SA_PARAM_BUFF_MODE) 4001 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 4002 4003 if (params_to_get & SA_PARAM_DENSITY) 4004 *density = mode_blk->density; 4005 4006 if (params_to_get & SA_PARAM_WP) 4007 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 4008 4009 if (params_to_get & SA_PARAM_SPEED) 4010 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 4011 4012 if (params_to_get & SA_PARAM_COMPRESSION) { 4013 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 4014 if (cpage == SA_DATA_COMPRESSION_PAGE) { 4015 struct scsi_data_compression_page *cp = &ntcs->dcomp; 4016 *comp_supported = 4017 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 4018 *comp_enabled = 4019 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 4020 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 4021 } else { 4022 struct scsi_dev_conf_page *cp = &ntcs->dconf; 4023 /* 4024 * We don't really know whether this device supports 4025 * Data Compression if the algorithm field is 4026 * zero. Just say we do. 4027 */ 4028 *comp_supported = TRUE; 4029 *comp_enabled = 4030 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 4031 *comp_algorithm = cp->sel_comp_alg; 4032 } 4033 if (tcs != NULL) 4034 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 4035 } 4036 4037 if ((params_to_get & SA_PARAM_DENSITY_EXT) 4038 && (softc->scsi_rev >= SCSI_REV_SPC)) { 4039 int i; 4040 4041 for (i = 0; i < SA_DENSITY_TYPES; i++) { 4042 scsi_report_density_support(&ccb->csio, 4043 /*retries*/ 1, 4044 /*cbfcnp*/ NULL, 4045 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4046 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 4047 /*medium_type*/ softc->density_type_bits[i] & 4048 SRDS_MEDIUM_TYPE, 4049 /*data_ptr*/ softc->density_info[i], 4050 /*length*/ sizeof(softc->density_info[i]), 4051 /*sense_len*/ SSD_FULL_SIZE, 4052 /*timeout*/ 4053 softc->timeout_info[SA_TIMEOUT_REP_DENSITY]); 4054 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 4055 softc->device_stats); 4056 status = ccb->ccb_h.status & CAM_STATUS_MASK; 4057 4058 /* 4059 * Some tape drives won't support this command at 4060 * all, but hopefully we'll minimize that with the 4061 * check for SPC or greater support above. If they 4062 * don't support the default report (neither the 4063 * MEDIA or MEDIUM_TYPE bits set), then there is 4064 * really no point in continuing on to look for 4065 * other reports. 4066 */ 4067 if ((error != 0) 4068 || (status != CAM_REQ_CMP)) { 4069 error = 0; 4070 softc->density_info_valid[i] = 0; 4071 if (softc->density_type_bits[i] == 0) 4072 break; 4073 else 4074 continue; 4075 } 4076 softc->density_info_valid[i] = ccb->csio.dxfer_len - 4077 ccb->csio.resid; 4078 } 4079 } 4080 4081 /* 4082 * Get logical block protection parameters if the drive supports it. 4083 */ 4084 if ((params_to_get & SA_PARAM_LBP) 4085 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 4086 struct scsi_mode_header_10 *mode10_hdr; 4087 struct scsi_control_data_prot_subpage *dp_page; 4088 struct scsi_mode_sense_10 *cdb; 4089 struct sa_prot_state *prot; 4090 int dp_len, returned_len; 4091 4092 if (dp_size == 0) 4093 dp_size = sizeof(*dp_page); 4094 4095 dp_len = sizeof(*mode10_hdr) + dp_size; 4096 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4097 if (mode10_hdr == NULL) { 4098 error = ENOMEM; 4099 goto sagetparamsexit; 4100 } 4101 4102 scsi_mode_sense_len(&ccb->csio, 4103 /*retries*/ 5, 4104 /*cbfcnp*/ NULL, 4105 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4106 /*dbd*/ TRUE, 4107 /*page_code*/ (prot_changeable == 0) ? 4108 SMS_PAGE_CTRL_CURRENT : 4109 SMS_PAGE_CTRL_CHANGEABLE, 4110 /*page*/ SMS_CONTROL_MODE_PAGE, 4111 /*param_buf*/ (uint8_t *)mode10_hdr, 4112 /*param_len*/ dp_len, 4113 /*minimum_cmd_size*/ 10, 4114 /*sense_len*/ SSD_FULL_SIZE, 4115 /*timeout*/ 4116 softc->timeout_info[SA_TIMEOUT_MODE_SENSE]); 4117 /* 4118 * XXX KDM we need to be able to set the subpage in the 4119 * fill function. 4120 */ 4121 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 4122 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 4123 4124 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 4125 softc->device_stats); 4126 if (error != 0) { 4127 free(mode10_hdr, M_SCSISA); 4128 goto sagetparamsexit; 4129 } 4130 4131 status = ccb->ccb_h.status & CAM_STATUS_MASK; 4132 if (status != CAM_REQ_CMP) { 4133 error = EINVAL; 4134 free(mode10_hdr, M_SCSISA); 4135 goto sagetparamsexit; 4136 } 4137 4138 /* 4139 * The returned data length at least has to be long enough 4140 * for us to look at length in the mode page header. 4141 */ 4142 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 4143 if (returned_len < sizeof(mode10_hdr->data_length)) { 4144 error = EINVAL; 4145 free(mode10_hdr, M_SCSISA); 4146 goto sagetparamsexit; 4147 } 4148 4149 returned_len = min(returned_len, 4150 sizeof(mode10_hdr->data_length) + 4151 scsi_2btoul(mode10_hdr->data_length)); 4152 4153 dp_page = (struct scsi_control_data_prot_subpage *) 4154 &mode10_hdr[1]; 4155 4156 /* 4157 * We also have to have enough data to include the prot_bits 4158 * in the subpage. 4159 */ 4160 if (returned_len < (sizeof(*mode10_hdr) + 4161 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 4162 + sizeof(dp_page->prot_bits))) { 4163 error = EINVAL; 4164 free(mode10_hdr, M_SCSISA); 4165 goto sagetparamsexit; 4166 } 4167 4168 prot = &softc->prot_info.cur_prot_state; 4169 prot->prot_method = dp_page->prot_method; 4170 prot->pi_length = dp_page->pi_length & 4171 SA_CTRL_DP_PI_LENGTH_MASK; 4172 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 4173 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 4174 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 4175 prot->initialized = 1; 4176 4177 if (prot_page != NULL) 4178 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 4179 sizeof(*dp_page))); 4180 4181 free(mode10_hdr, M_SCSISA); 4182 } 4183 4184 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4185 int idx; 4186 char *xyz = mode_buffer; 4187 xpt_print_path(periph->path); 4188 printf("Mode Sense Data="); 4189 for (idx = 0; idx < mode_buffer_len; idx++) 4190 printf(" 0x%02x", xyz[idx] & 0xff); 4191 printf("\n"); 4192 } 4193 4194 sagetparamsexit: 4195 4196 xpt_release_ccb(ccb); 4197 free(mode_buffer, M_SCSISA); 4198 return (error); 4199 } 4200 4201 /* 4202 * Set protection information to the pending protection information stored 4203 * in the softc. 4204 */ 4205 static int 4206 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 4207 { 4208 struct sa_softc *softc; 4209 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 4210 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 4211 union ccb *ccb; 4212 uint8_t current_speed; 4213 size_t dp_size, dp_page_length; 4214 int dp_len, buff_mode; 4215 int error; 4216 4217 softc = (struct sa_softc *)periph->softc; 4218 mode10_hdr = NULL; 4219 mode10_changeable = NULL; 4220 ccb = NULL; 4221 4222 /* 4223 * Start off with the size set to the actual length of the page 4224 * that we have defined. 4225 */ 4226 dp_size = sizeof(*dp_changeable); 4227 dp_page_length = dp_size - 4228 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 4229 4230 retry_length: 4231 4232 dp_len = sizeof(*mode10_changeable) + dp_size; 4233 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4234 if (mode10_changeable == NULL) { 4235 error = ENOMEM; 4236 goto bailout; 4237 } 4238 4239 dp_changeable = 4240 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 4241 4242 /* 4243 * First get the data protection page changeable parameters mask. 4244 * We need to know which parameters the drive supports changing. 4245 * We also need to know what the drive claims that its page length 4246 * is. The reason is that IBM drives in particular are very picky 4247 * about the page length. They want it (the length set in the 4248 * page structure itself) to be 28 bytes, and they want the 4249 * parameter list length specified in the mode select header to be 4250 * 40 bytes. So, to work with IBM drives as well as any other tape 4251 * drive, find out what the drive claims the page length is, and 4252 * make sure that we match that. 4253 */ 4254 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4255 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4256 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 4257 if (error != 0) 4258 goto bailout; 4259 4260 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 4261 dp_page_length = scsi_2btoul(dp_changeable->length); 4262 dp_size = dp_page_length + 4263 __offsetof(struct scsi_control_data_prot_subpage, 4264 prot_method); 4265 free(mode10_changeable, M_SCSISA); 4266 mode10_changeable = NULL; 4267 goto retry_length; 4268 } 4269 4270 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 4271 if (mode10_hdr == NULL) { 4272 error = ENOMEM; 4273 goto bailout; 4274 } 4275 4276 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 4277 4278 /* 4279 * Now grab the actual current settings in the page. 4280 */ 4281 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4282 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4283 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 4284 if (error != 0) 4285 goto bailout; 4286 4287 /* These two fields need to be 0 for MODE SELECT */ 4288 scsi_ulto2b(0, mode10_hdr->data_length); 4289 mode10_hdr->medium_type = 0; 4290 /* We are not including a block descriptor */ 4291 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 4292 4293 mode10_hdr->dev_spec = current_speed; 4294 /* if set, set single-initiator buffering mode */ 4295 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4296 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4297 } 4298 4299 /* 4300 * For each field, make sure that the drive allows changing it 4301 * before bringing in the user's setting. 4302 */ 4303 if (dp_changeable->prot_method != 0) 4304 dp_page->prot_method = new_prot->prot_method; 4305 4306 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 4307 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 4308 dp_page->pi_length |= (new_prot->pi_length & 4309 SA_CTRL_DP_PI_LENGTH_MASK); 4310 } 4311 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 4312 if (new_prot->lbp_w) 4313 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 4314 else 4315 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 4316 } 4317 4318 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 4319 if (new_prot->lbp_r) 4320 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 4321 else 4322 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 4323 } 4324 4325 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 4326 if (new_prot->rbdp) 4327 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 4328 else 4329 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 4330 } 4331 4332 ccb = cam_periph_getccb(periph, 1); 4333 4334 scsi_mode_select_len(&ccb->csio, 4335 /*retries*/ 5, 4336 /*cbfcnp*/ NULL, 4337 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4338 /*scsi_page_fmt*/ TRUE, 4339 /*save_pages*/ FALSE, 4340 /*param_buf*/ (uint8_t *)mode10_hdr, 4341 /*param_len*/ dp_len, 4342 /*minimum_cmd_size*/ 10, 4343 /*sense_len*/ SSD_FULL_SIZE, 4344 /*timeout*/ 4345 softc->timeout_info[SA_TIMEOUT_MODE_SELECT]); 4346 4347 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4348 if (error != 0) 4349 goto bailout; 4350 4351 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4352 error = EINVAL; 4353 goto bailout; 4354 } 4355 4356 /* 4357 * The operation was successful. We could just copy the settings 4358 * the user requested, but just in case the drive ignored some of 4359 * our settings, let's ask for status again. 4360 */ 4361 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4362 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4363 NULL, NULL, dp_page, dp_size, 0); 4364 4365 bailout: 4366 if (ccb != NULL) 4367 xpt_release_ccb(ccb); 4368 free(mode10_hdr, M_SCSISA); 4369 free(mode10_changeable, M_SCSISA); 4370 return (error); 4371 } 4372 4373 /* 4374 * The purpose of this function is to set one of four different parameters 4375 * for a tape drive: 4376 * - blocksize 4377 * - density 4378 * - compression / compression algorithm 4379 * - buffering mode 4380 * 4381 * The assumption is that this will be called from saioctl(), and therefore 4382 * from a process context. Thus the waiting malloc calls below. If that 4383 * assumption ever changes, the malloc calls should be changed to be 4384 * NOWAIT mallocs. 4385 * 4386 * Any or all of the four parameters may be set when this function is 4387 * called. It should handle setting more than one parameter at once. 4388 */ 4389 static int 4390 sasetparams(struct cam_periph *periph, sa_params params_to_set, 4391 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4392 u_int32_t sense_flags) 4393 { 4394 struct sa_softc *softc; 4395 u_int32_t current_blocksize; 4396 u_int32_t current_calg; 4397 u_int8_t current_density; 4398 u_int8_t current_speed; 4399 int comp_enabled, comp_supported; 4400 void *mode_buffer; 4401 int mode_buffer_len; 4402 struct scsi_mode_header_6 *mode_hdr; 4403 struct scsi_mode_blk_desc *mode_blk; 4404 sa_comp_t *ccomp, *cpage; 4405 int buff_mode; 4406 union ccb *ccb = NULL; 4407 int error; 4408 4409 softc = (struct sa_softc *)periph->softc; 4410 4411 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4412 if (ccomp == NULL) 4413 return (ENOMEM); 4414 4415 /* 4416 * Since it doesn't make sense to set the number of blocks, or 4417 * write protection, we won't try to get the current value. We 4418 * always want to get the blocksize, so we can set it back to the 4419 * proper value. 4420 */ 4421 error = sagetparams(periph, 4422 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4423 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4424 ¤t_speed, &comp_supported, &comp_enabled, 4425 ¤t_calg, ccomp, NULL, 0, 0); 4426 4427 if (error != 0) { 4428 free(ccomp, M_SCSISA); 4429 return (error); 4430 } 4431 4432 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4433 if (params_to_set & SA_PARAM_COMPRESSION) 4434 mode_buffer_len += sizeof (sa_comp_t); 4435 4436 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4437 if (mode_buffer == NULL) { 4438 free(ccomp, M_SCSISA); 4439 return (ENOMEM); 4440 } 4441 4442 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4443 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4444 4445 ccb = cam_periph_getccb(periph, 1); 4446 4447 retry: 4448 4449 if (params_to_set & SA_PARAM_COMPRESSION) { 4450 if (mode_blk) { 4451 cpage = (sa_comp_t *)&mode_blk[1]; 4452 } else { 4453 cpage = (sa_comp_t *)&mode_hdr[1]; 4454 } 4455 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4456 cpage->hdr.pagecode &= ~0x80; 4457 } else 4458 cpage = NULL; 4459 4460 /* 4461 * If the caller wants us to set the blocksize, use the one they 4462 * pass in. Otherwise, use the blocksize we got back from the 4463 * mode select above. 4464 */ 4465 if (mode_blk) { 4466 if (params_to_set & SA_PARAM_BLOCKSIZE) 4467 scsi_ulto3b(blocksize, mode_blk->blklen); 4468 else 4469 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4470 4471 /* 4472 * Set density if requested, else preserve old density. 4473 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4474 * devices, else density we've latched up in our softc. 4475 */ 4476 if (params_to_set & SA_PARAM_DENSITY) { 4477 mode_blk->density = density; 4478 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4479 mode_blk->density = SCSI_SAME_DENSITY; 4480 } else { 4481 mode_blk->density = softc->media_density; 4482 } 4483 } 4484 4485 /* 4486 * For mode selects, these two fields must be zero. 4487 */ 4488 mode_hdr->data_length = 0; 4489 mode_hdr->medium_type = 0; 4490 4491 /* set the speed to the current value */ 4492 mode_hdr->dev_spec = current_speed; 4493 4494 /* if set, set single-initiator buffering mode */ 4495 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4496 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4497 } 4498 4499 if (mode_blk) 4500 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4501 else 4502 mode_hdr->blk_desc_len = 0; 4503 4504 /* 4505 * First, if the user wants us to set the compression algorithm or 4506 * just turn compression on, check to make sure that this drive 4507 * supports compression. 4508 */ 4509 if (params_to_set & SA_PARAM_COMPRESSION) { 4510 /* 4511 * If the compression algorithm is 0, disable compression. 4512 * If the compression algorithm is non-zero, enable 4513 * compression and set the compression type to the 4514 * specified compression algorithm, unless the algorithm is 4515 * MT_COMP_ENABLE. In that case, we look at the 4516 * compression algorithm that is currently set and if it is 4517 * non-zero, we leave it as-is. If it is zero, and we have 4518 * saved a compression algorithm from a time when 4519 * compression was enabled before, set the compression to 4520 * the saved value. 4521 */ 4522 switch (ccomp->hdr.pagecode & ~0x80) { 4523 case SA_DEVICE_CONFIGURATION_PAGE: 4524 { 4525 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4526 if (calg == 0) { 4527 dcp->sel_comp_alg = SA_COMP_NONE; 4528 break; 4529 } 4530 if (calg != MT_COMP_ENABLE) { 4531 dcp->sel_comp_alg = calg; 4532 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4533 softc->saved_comp_algorithm != 0) { 4534 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4535 } 4536 break; 4537 } 4538 case SA_DATA_COMPRESSION_PAGE: 4539 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4540 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4541 if (calg == 0) { 4542 /* 4543 * Disable compression, but leave the 4544 * decompression and the capability bit 4545 * alone. 4546 */ 4547 dcp->dce_and_dcc = SA_DCP_DCC; 4548 dcp->dde_and_red |= SA_DCP_DDE; 4549 break; 4550 } 4551 /* enable compression && decompression */ 4552 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4553 dcp->dde_and_red |= SA_DCP_DDE; 4554 /* 4555 * If there, use compression algorithm from caller. 4556 * Otherwise, if there's a saved compression algorithm 4557 * and there is no current algorithm, use the saved 4558 * algorithm. Else parrot back what we got and hope 4559 * for the best. 4560 */ 4561 if (calg != MT_COMP_ENABLE) { 4562 scsi_ulto4b(calg, dcp->comp_algorithm); 4563 scsi_ulto4b(calg, dcp->decomp_algorithm); 4564 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4565 softc->saved_comp_algorithm != 0) { 4566 scsi_ulto4b(softc->saved_comp_algorithm, 4567 dcp->comp_algorithm); 4568 scsi_ulto4b(softc->saved_comp_algorithm, 4569 dcp->decomp_algorithm); 4570 } 4571 break; 4572 } 4573 /* 4574 * Compression does not appear to be supported- 4575 * at least via the DATA COMPRESSION page. It 4576 * would be too much to ask us to believe that 4577 * the page itself is supported, but incorrectly 4578 * reports an ability to manipulate data compression, 4579 * so we'll assume that this device doesn't support 4580 * compression. We can just fall through for that. 4581 */ 4582 /* FALLTHROUGH */ 4583 default: 4584 /* 4585 * The drive doesn't seem to support compression, 4586 * so turn off the set compression bit. 4587 */ 4588 params_to_set &= ~SA_PARAM_COMPRESSION; 4589 xpt_print(periph->path, 4590 "device does not seem to support compression\n"); 4591 4592 /* 4593 * If that was the only thing the user wanted us to set, 4594 * clean up allocated resources and return with 4595 * 'operation not supported'. 4596 */ 4597 if (params_to_set == SA_PARAM_NONE) { 4598 free(mode_buffer, M_SCSISA); 4599 xpt_release_ccb(ccb); 4600 return (ENODEV); 4601 } 4602 4603 /* 4604 * That wasn't the only thing the user wanted us to set. 4605 * So, decrease the stated mode buffer length by the 4606 * size of the compression mode page. 4607 */ 4608 mode_buffer_len -= sizeof(sa_comp_t); 4609 } 4610 } 4611 4612 /* It is safe to retry this operation */ 4613 scsi_mode_select(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 4614 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4615 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 4616 softc->timeout_info[SA_TIMEOUT_MODE_SELECT]); 4617 4618 error = cam_periph_runccb(ccb, saerror, 0, 4619 sense_flags, softc->device_stats); 4620 4621 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4622 int idx; 4623 char *xyz = mode_buffer; 4624 xpt_print_path(periph->path); 4625 printf("Err%d, Mode Select Data=", error); 4626 for (idx = 0; idx < mode_buffer_len; idx++) 4627 printf(" 0x%02x", xyz[idx] & 0xff); 4628 printf("\n"); 4629 } 4630 4631 if (error) { 4632 /* 4633 * If we can, try without setting density/blocksize. 4634 */ 4635 if (mode_blk) { 4636 if ((params_to_set & 4637 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4638 mode_blk = NULL; 4639 goto retry; 4640 } 4641 } else { 4642 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4643 cpage = (sa_comp_t *)&mode_blk[1]; 4644 } 4645 4646 /* 4647 * If we were setting the blocksize, and that failed, we 4648 * want to set it to its original value. If we weren't 4649 * setting the blocksize, we don't want to change it. 4650 */ 4651 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4652 4653 /* 4654 * Set density if requested, else preserve old density. 4655 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4656 * devices, else density we've latched up in our softc. 4657 */ 4658 if (params_to_set & SA_PARAM_DENSITY) { 4659 mode_blk->density = current_density; 4660 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4661 mode_blk->density = SCSI_SAME_DENSITY; 4662 } else { 4663 mode_blk->density = softc->media_density; 4664 } 4665 4666 if (params_to_set & SA_PARAM_COMPRESSION) 4667 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4668 4669 /* 4670 * The retry count is the only CCB field that might have been 4671 * changed that we care about, so reset it back to 1. 4672 */ 4673 ccb->ccb_h.retry_count = 1; 4674 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4675 softc->device_stats); 4676 } 4677 4678 xpt_release_ccb(ccb); 4679 4680 if (ccomp != NULL) 4681 free(ccomp, M_SCSISA); 4682 4683 if (params_to_set & SA_PARAM_COMPRESSION) { 4684 if (error) { 4685 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4686 /* 4687 * Even if we get an error setting compression, 4688 * do not say that we don't support it. We could 4689 * have been wrong, or it may be media specific. 4690 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4691 */ 4692 softc->saved_comp_algorithm = softc->comp_algorithm; 4693 softc->comp_algorithm = 0; 4694 } else { 4695 softc->flags |= SA_FLAG_COMP_ENABLED; 4696 softc->comp_algorithm = calg; 4697 } 4698 } 4699 4700 free(mode_buffer, M_SCSISA); 4701 return (error); 4702 } 4703 4704 static int 4705 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4706 struct mtextget *g) 4707 { 4708 int indent, error; 4709 char tmpstr[80]; 4710 struct sa_softc *softc; 4711 int tmpint; 4712 uint32_t maxio_tmp; 4713 struct ccb_getdev cgd; 4714 4715 softc = (struct sa_softc *)periph->softc; 4716 4717 error = 0; 4718 4719 error = sagetparams_common(dev, periph); 4720 if (error) 4721 goto extget_bailout; 4722 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4723 sagetpos(periph); 4724 4725 indent = 0; 4726 SASBADDNODE(sb, indent, mtextget); 4727 /* 4728 * Basic CAM peripheral information. 4729 */ 4730 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4731 strlen(periph->periph_name) + 1); 4732 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4733 memset(&cgd, 0, sizeof(cgd)); 4734 xpt_setup_ccb(&cgd.ccb_h, 4735 periph->path, 4736 CAM_PRIORITY_NORMAL); 4737 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4738 xpt_action((union ccb *)&cgd); 4739 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4740 g->status = MT_EXT_GET_ERROR; 4741 snprintf(g->error_str, sizeof(g->error_str), 4742 "Error %#x returned for XPT_GDEV_TYPE CCB", 4743 cgd.ccb_h.status); 4744 goto extget_bailout; 4745 } 4746 4747 cam_strvis(tmpstr, cgd.inq_data.vendor, 4748 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4749 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4750 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4751 4752 cam_strvis(tmpstr, cgd.inq_data.product, 4753 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4754 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4755 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4756 4757 cam_strvis(tmpstr, cgd.inq_data.revision, 4758 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4759 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4760 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4761 4762 if (cgd.serial_num_len > 0) { 4763 char *tmpstr2; 4764 size_t ts2_len; 4765 int ts2_malloc; 4766 4767 ts2_len = 0; 4768 4769 if (cgd.serial_num_len > sizeof(tmpstr)) { 4770 ts2_len = cgd.serial_num_len + 1; 4771 ts2_malloc = 1; 4772 tmpstr2 = malloc(ts2_len, M_SCSISA, M_NOWAIT | M_ZERO); 4773 /* 4774 * The 80 characters allocated on the stack above 4775 * will handle the vast majority of serial numbers. 4776 * If we run into one that is larger than that, and 4777 * we can't malloc the length without blocking, 4778 * bail out with an out of memory error. 4779 */ 4780 if (tmpstr2 == NULL) { 4781 error = ENOMEM; 4782 goto extget_bailout; 4783 } 4784 } else { 4785 ts2_len = sizeof(tmpstr); 4786 ts2_malloc = 0; 4787 tmpstr2 = tmpstr; 4788 } 4789 4790 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4791 ts2_len); 4792 4793 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4794 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4795 if (ts2_malloc != 0) 4796 free(tmpstr2, M_SCSISA); 4797 } else { 4798 /* 4799 * We return a serial_num element in any case, but it will 4800 * be empty if the device has no serial number. 4801 */ 4802 tmpstr[0] = '\0'; 4803 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4804 (ssize_t)0, "Serial Number"); 4805 } 4806 4807 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4808 "Maximum I/O size allowed by driver and controller"); 4809 4810 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4811 "Maximum I/O size reported by controller"); 4812 4813 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4814 "Maximum block size supported by tape drive and media"); 4815 4816 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4817 "Minimum block size supported by tape drive and media"); 4818 4819 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4820 "Block granularity supported by tape drive and media"); 4821 4822 maxio_tmp = min(softc->max_blk, softc->maxio); 4823 4824 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4825 "Maximum possible I/O size"); 4826 4827 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4828 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4829 4830 /* 4831 * XXX KDM include SIM, bus, target, LUN? 4832 */ 4833 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4834 tmpint = 0; 4835 else 4836 tmpint = 1; 4837 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4838 "Set to 1 if compression is supported, 0 if not"); 4839 if (softc->flags & SA_FLAG_COMP_ENABLED) 4840 tmpint = 1; 4841 else 4842 tmpint = 0; 4843 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4844 "Set to 1 if compression is enabled, 0 if not"); 4845 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4846 compression_algorithm, "Numeric compression algorithm"); 4847 4848 safillprot(softc, &indent, sb); 4849 4850 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4851 media_blocksize, "Block size reported by drive or set by user"); 4852 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4853 calculated_fileno, "Calculated file number, -1 if unknown"); 4854 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4855 calculated_rel_blkno, "Calculated block number relative to file, " 4856 "set to -1 if unknown"); 4857 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4858 reported_fileno, "File number reported by drive, -1 if unknown"); 4859 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4860 reported_blkno, "Block number relative to BOP/BOT reported by " 4861 "drive, -1 if unknown"); 4862 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4863 partition, "Current partition number, 0 is the default"); 4864 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4865 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4866 "not, -1 if unknown"); 4867 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4868 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4869 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4870 "Set to 1 if drive is past programmable early warning, 0 if not, " 4871 "-1 if unknown"); 4872 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4873 residual, "Residual for the last I/O"); 4874 /* 4875 * XXX KDM should we send a string with the current driver 4876 * status already decoded instead of a numeric value? 4877 */ 4878 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4879 "Current state of the driver"); 4880 4881 safilldensitysb(softc, &indent, sb); 4882 4883 SASBENDNODE(sb, indent, mtextget); 4884 4885 extget_bailout: 4886 4887 return (error); 4888 } 4889 4890 static int 4891 saparamget(struct sa_softc *softc, struct sbuf *sb) 4892 { 4893 int indent; 4894 4895 indent = 0; 4896 SASBADDNODE(sb, indent, mtparamget); 4897 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4898 "Suppress an error on underlength variable reads"); 4899 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4900 "Return an error to warn that end of tape is approaching"); 4901 safillprot(softc, &indent, sb); 4902 SASBENDNODE(sb, indent, mtparamget); 4903 4904 return (0); 4905 } 4906 4907 static void 4908 saprevent(struct cam_periph *periph, int action) 4909 { 4910 struct sa_softc *softc; 4911 union ccb *ccb; 4912 int error, sf; 4913 4914 softc = (struct sa_softc *)periph->softc; 4915 4916 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4917 return; 4918 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4919 return; 4920 4921 /* 4922 * We can be quiet about illegal requests. 4923 */ 4924 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4925 sf = 0; 4926 } else 4927 sf = SF_QUIET_IR; 4928 4929 ccb = cam_periph_getccb(periph, 1); 4930 4931 /* It is safe to retry this operation */ 4932 scsi_prevent(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, action, 4933 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_PREVENT]); 4934 4935 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4936 if (error == 0) { 4937 if (action == PR_ALLOW) 4938 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4939 else 4940 softc->flags |= SA_FLAG_TAPE_LOCKED; 4941 } 4942 4943 xpt_release_ccb(ccb); 4944 } 4945 4946 static int 4947 sarewind(struct cam_periph *periph) 4948 { 4949 union ccb *ccb; 4950 struct sa_softc *softc; 4951 int error; 4952 4953 softc = (struct sa_softc *)periph->softc; 4954 4955 ccb = cam_periph_getccb(periph, 1); 4956 4957 /* It is safe to retry this operation */ 4958 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 4959 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_REWIND]); 4960 4961 softc->dsreg = MTIO_DSREG_REW; 4962 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4963 softc->dsreg = MTIO_DSREG_REST; 4964 4965 xpt_release_ccb(ccb); 4966 if (error == 0) { 4967 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4968 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4969 } else { 4970 softc->fileno = softc->blkno = (daddr_t) -1; 4971 softc->partition = (daddr_t) -1; 4972 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4973 } 4974 return (error); 4975 } 4976 4977 static int 4978 saspace(struct cam_periph *periph, int count, scsi_space_code code) 4979 { 4980 union ccb *ccb; 4981 struct sa_softc *softc; 4982 int error; 4983 4984 softc = (struct sa_softc *)periph->softc; 4985 4986 ccb = cam_periph_getccb(periph, 1); 4987 4988 /* This cannot be retried */ 4989 4990 scsi_space(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, code, count, 4991 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_SPACE]); 4992 4993 /* 4994 * Clear residual because we will be using it. 4995 */ 4996 softc->last_ctl_resid = 0; 4997 4998 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4999 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5000 softc->dsreg = MTIO_DSREG_REST; 5001 5002 xpt_release_ccb(ccb); 5003 5004 /* 5005 * If a spacing operation has failed, we need to invalidate 5006 * this mount. 5007 * 5008 * If the spacing operation was setmarks or to end of recorded data, 5009 * we no longer know our relative position. 5010 * 5011 * If the spacing operations was spacing files in reverse, we 5012 * take account of the residual, but still check against less 5013 * than zero- if we've gone negative, we must have hit BOT. 5014 * 5015 * If the spacing operations was spacing records in reverse and 5016 * we have a residual, we've either hit BOT or hit a filemark. 5017 * In the former case, we know our new record number (0). In 5018 * the latter case, we have absolutely no idea what the real 5019 * record number is- we've stopped between the end of the last 5020 * record in the previous file and the filemark that stopped 5021 * our spacing backwards. 5022 */ 5023 if (error) { 5024 softc->fileno = softc->blkno = (daddr_t) -1; 5025 softc->rep_blkno = softc->partition = (daddr_t) -1; 5026 softc->rep_fileno = (daddr_t) -1; 5027 } else if (code == SS_SETMARKS || code == SS_EOD) { 5028 softc->fileno = softc->blkno = (daddr_t) -1; 5029 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 5030 softc->fileno += (count - softc->last_ctl_resid); 5031 if (softc->fileno < 0) /* we must of hit BOT */ 5032 softc->fileno = 0; 5033 softc->blkno = 0; 5034 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 5035 softc->blkno += (count - softc->last_ctl_resid); 5036 if (count < 0) { 5037 if (softc->last_ctl_resid || softc->blkno < 0) { 5038 if (softc->fileno == 0) { 5039 softc->blkno = 0; 5040 } else { 5041 softc->blkno = (daddr_t) -1; 5042 } 5043 } 5044 } 5045 } 5046 if (error == 0) 5047 sagetpos(periph); 5048 5049 return (error); 5050 } 5051 5052 static int 5053 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 5054 { 5055 union ccb *ccb; 5056 struct sa_softc *softc; 5057 int error, nwm = 0; 5058 5059 softc = (struct sa_softc *)periph->softc; 5060 if (softc->open_rdonly) 5061 return (EBADF); 5062 5063 ccb = cam_periph_getccb(periph, 1); 5064 /* 5065 * Clear residual because we will be using it. 5066 */ 5067 softc->last_ctl_resid = 0; 5068 5069 softc->dsreg = MTIO_DSREG_FMK; 5070 /* this *must* not be retried */ 5071 scsi_write_filemarks(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, 5072 immed, setmarks, nmarks, SSD_FULL_SIZE, 5073 softc->timeout_info[SA_TIMEOUT_WRITE_FILEMARKS]); 5074 softc->dsreg = MTIO_DSREG_REST; 5075 5076 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5077 5078 if (error == 0 && nmarks) { 5079 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5080 nwm = nmarks - softc->last_ctl_resid; 5081 softc->filemarks += nwm; 5082 } 5083 5084 xpt_release_ccb(ccb); 5085 5086 /* 5087 * Update relative positions (if we're doing that). 5088 */ 5089 if (error) { 5090 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 5091 } else if (softc->fileno != (daddr_t) -1) { 5092 softc->fileno += nwm; 5093 softc->blkno = 0; 5094 } 5095 5096 /* 5097 * Ask the tape drive for position information. 5098 */ 5099 sagetpos(periph); 5100 5101 /* 5102 * If we got valid position information, since we just wrote a file 5103 * mark, we know we're at the file mark and block 0 after that 5104 * filemark. 5105 */ 5106 if (softc->rep_fileno != (daddr_t) -1) { 5107 softc->fileno = softc->rep_fileno; 5108 softc->blkno = 0; 5109 } 5110 5111 return (error); 5112 } 5113 5114 static int 5115 sagetpos(struct cam_periph *periph) 5116 { 5117 union ccb *ccb; 5118 struct scsi_tape_position_long_data long_pos; 5119 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5120 int error; 5121 5122 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 5123 softc->rep_fileno = (daddr_t) -1; 5124 softc->rep_blkno = (daddr_t) -1; 5125 softc->bop = softc->eop = softc->bpew = -1; 5126 return (EOPNOTSUPP); 5127 } 5128 5129 bzero(&long_pos, sizeof(long_pos)); 5130 5131 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 5132 scsi_read_position_10(&ccb->csio, 5133 /*retries*/ 1, 5134 /*cbfcnp*/ NULL, 5135 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5136 /*service_action*/ SA_RPOS_LONG_FORM, 5137 /*data_ptr*/ (uint8_t *)&long_pos, 5138 /*length*/ sizeof(long_pos), 5139 /*sense_len*/ SSD_FULL_SIZE, 5140 /*timeout*/ 5141 softc->timeout_info[SA_TIMEOUT_READ_POSITION]); 5142 5143 softc->dsreg = MTIO_DSREG_RBSY; 5144 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 5145 softc->device_stats); 5146 softc->dsreg = MTIO_DSREG_REST; 5147 5148 if (error == 0) { 5149 if (long_pos.flags & SA_RPOS_LONG_MPU) { 5150 /* 5151 * If the drive doesn't know what file mark it is 5152 * on, our calculated filemark isn't going to be 5153 * accurate either. 5154 */ 5155 softc->fileno = (daddr_t) -1; 5156 softc->rep_fileno = (daddr_t) -1; 5157 } else { 5158 softc->fileno = softc->rep_fileno = 5159 scsi_8btou64(long_pos.logical_file_num); 5160 } 5161 5162 if (long_pos.flags & SA_RPOS_LONG_LONU) { 5163 softc->partition = (daddr_t) -1; 5164 softc->rep_blkno = (daddr_t) -1; 5165 /* 5166 * If the tape drive doesn't know its block 5167 * position, we can't claim to know it either. 5168 */ 5169 softc->blkno = (daddr_t) -1; 5170 } else { 5171 softc->partition = scsi_4btoul(long_pos.partition); 5172 softc->rep_blkno = 5173 scsi_8btou64(long_pos.logical_object_num); 5174 } 5175 if (long_pos.flags & SA_RPOS_LONG_BOP) 5176 softc->bop = 1; 5177 else 5178 softc->bop = 0; 5179 5180 if (long_pos.flags & SA_RPOS_LONG_EOP) 5181 softc->eop = 1; 5182 else 5183 softc->eop = 0; 5184 5185 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 5186 || (softc->set_pews_status != 0)) { 5187 softc->bpew = 1; 5188 if (softc->set_pews_status > 0) 5189 softc->set_pews_status--; 5190 } else 5191 softc->bpew = 0; 5192 } else if (error == EINVAL) { 5193 /* 5194 * If this drive returned an invalid-request type error, 5195 * then it likely doesn't support the long form report. 5196 */ 5197 softc->quirks |= SA_QUIRK_NO_LONG_POS; 5198 } 5199 5200 if (error != 0) { 5201 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5202 softc->partition = (daddr_t) -1; 5203 softc->bop = softc->eop = softc->bpew = -1; 5204 } 5205 5206 xpt_release_ccb(ccb); 5207 5208 return (error); 5209 } 5210 5211 static int 5212 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 5213 { 5214 struct scsi_tape_position_data loc; 5215 union ccb *ccb; 5216 struct sa_softc *softc = (struct sa_softc *)periph->softc; 5217 int error; 5218 5219 /* 5220 * We try and flush any buffered writes here if we were writing 5221 * and we're trying to get hardware block position. It eats 5222 * up performance substantially, but I'm wary of drive firmware. 5223 * 5224 * I think that *logical* block position is probably okay- 5225 * but hardware block position might have to wait for data 5226 * to hit media to be valid. Caveat Emptor. 5227 */ 5228 5229 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 5230 error = sawritefilemarks(periph, 0, 0, 0); 5231 if (error && error != EACCES) 5232 return (error); 5233 } 5234 5235 ccb = cam_periph_getccb(periph, 1); 5236 scsi_read_position(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 5237 hard, &loc, SSD_FULL_SIZE, 5238 softc->timeout_info[SA_TIMEOUT_READ_POSITION]); 5239 softc->dsreg = MTIO_DSREG_RBSY; 5240 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5241 softc->dsreg = MTIO_DSREG_REST; 5242 5243 if (error == 0) { 5244 if (loc.flags & SA_RPOS_UNCERTAIN) { 5245 error = EINVAL; /* nothing is certain */ 5246 } else { 5247 *blkptr = scsi_4btoul(loc.firstblk); 5248 } 5249 } 5250 5251 xpt_release_ccb(ccb); 5252 return (error); 5253 } 5254 5255 static int 5256 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 5257 { 5258 union ccb *ccb; 5259 struct sa_softc *softc; 5260 int locate16; 5261 int immed, cp; 5262 int error; 5263 5264 /* 5265 * We used to try and flush any buffered writes here. 5266 * Now we push this onto user applications to either 5267 * flush the pending writes themselves (via a zero count 5268 * WRITE FILEMARKS command) or they can trust their tape 5269 * drive to do this correctly for them. 5270 */ 5271 5272 softc = (struct sa_softc *)periph->softc; 5273 ccb = cam_periph_getccb(periph, 1); 5274 5275 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 5276 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 5277 5278 /* 5279 * Determine whether we have to use LOCATE or LOCATE16. The hard 5280 * bit is only possible with LOCATE, but the new ioctls do not 5281 * allow setting that bit. So we can't get into the situation of 5282 * having the hard bit set with a block address that is larger than 5283 * 32-bits. 5284 */ 5285 if (hard != 0) 5286 locate16 = 0; 5287 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 5288 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 5289 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 5290 locate16 = 1; 5291 else 5292 locate16 = 0; 5293 5294 if (locate16 != 0) { 5295 scsi_locate_16(&ccb->csio, 5296 /*retries*/ 1, 5297 /*cbfcnp*/ NULL, 5298 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5299 /*immed*/ immed, 5300 /*cp*/ cp, 5301 /*dest_type*/ locate_info->dest_type, 5302 /*bam*/ locate_info->block_address_mode, 5303 /*partition*/ locate_info->partition, 5304 /*logical_id*/ locate_info->logical_id, 5305 /*sense_len*/ SSD_FULL_SIZE, 5306 /*timeout*/ 5307 softc->timeout_info[SA_TIMEOUT_LOCATE]); 5308 } else { 5309 scsi_locate_10(&ccb->csio, 5310 /*retries*/ 1, 5311 /*cbfcnp*/ NULL, 5312 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5313 /*immed*/ immed, 5314 /*cp*/ cp, 5315 /*hard*/ hard, 5316 /*partition*/ locate_info->partition, 5317 /*block_address*/ locate_info->logical_id, 5318 /*sense_len*/ SSD_FULL_SIZE, 5319 /*timeout*/ 5320 softc->timeout_info[SA_TIMEOUT_LOCATE]); 5321 } 5322 5323 softc->dsreg = MTIO_DSREG_POS; 5324 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5325 softc->dsreg = MTIO_DSREG_REST; 5326 xpt_release_ccb(ccb); 5327 5328 /* 5329 * We assume the calculated file and block numbers are unknown 5330 * unless we have enough information to populate them. 5331 */ 5332 softc->fileno = softc->blkno = (daddr_t) -1; 5333 5334 /* 5335 * If the user requested changing the partition and the request 5336 * succeeded, note the partition. 5337 */ 5338 if ((error == 0) 5339 && (cp != 0)) 5340 softc->partition = locate_info->partition; 5341 else 5342 softc->partition = (daddr_t) -1; 5343 5344 if (error == 0) { 5345 switch (locate_info->dest_type) { 5346 case MT_LOCATE_DEST_FILE: 5347 /* 5348 * This is the only case where we can reliably 5349 * calculate the file and block numbers. 5350 */ 5351 softc->fileno = locate_info->logical_id; 5352 softc->blkno = 0; 5353 break; 5354 case MT_LOCATE_DEST_OBJECT: 5355 case MT_LOCATE_DEST_SET: 5356 case MT_LOCATE_DEST_EOD: 5357 default: 5358 break; 5359 } 5360 } 5361 5362 /* 5363 * Ask the drive for current position information. 5364 */ 5365 sagetpos(periph); 5366 5367 return (error); 5368 } 5369 5370 static int 5371 saretension(struct cam_periph *periph) 5372 { 5373 union ccb *ccb; 5374 struct sa_softc *softc; 5375 int error; 5376 5377 softc = (struct sa_softc *)periph->softc; 5378 5379 ccb = cam_periph_getccb(periph, 1); 5380 5381 /* It is safe to retry this operation */ 5382 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5383 FALSE, TRUE, TRUE, SSD_FULL_SIZE, 5384 softc->timeout_info[SA_TIMEOUT_LOAD]); 5385 5386 softc->dsreg = MTIO_DSREG_TEN; 5387 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5388 softc->dsreg = MTIO_DSREG_REST; 5389 5390 xpt_release_ccb(ccb); 5391 if (error == 0) { 5392 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5393 sagetpos(periph); 5394 } else 5395 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5396 return (error); 5397 } 5398 5399 static int 5400 sareservereleaseunit(struct cam_periph *periph, int reserve) 5401 { 5402 union ccb *ccb; 5403 struct sa_softc *softc; 5404 int error; 5405 5406 softc = (struct sa_softc *)periph->softc; 5407 ccb = cam_periph_getccb(periph, 1); 5408 5409 /* It is safe to retry this operation */ 5410 scsi_reserve_release_unit(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 5411 FALSE, 0, SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_RESERVE], 5412 reserve); 5413 softc->dsreg = MTIO_DSREG_RBSY; 5414 error = cam_periph_runccb(ccb, saerror, 0, 5415 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5416 softc->dsreg = MTIO_DSREG_REST; 5417 xpt_release_ccb(ccb); 5418 5419 /* 5420 * If the error was Illegal Request, then the device doesn't support 5421 * RESERVE/RELEASE. This is not an error. 5422 */ 5423 if (error == EINVAL) { 5424 error = 0; 5425 } 5426 5427 return (error); 5428 } 5429 5430 static int 5431 saloadunload(struct cam_periph *periph, int load) 5432 { 5433 union ccb *ccb; 5434 struct sa_softc *softc; 5435 int error; 5436 5437 softc = (struct sa_softc *)periph->softc; 5438 5439 ccb = cam_periph_getccb(periph, 1); 5440 5441 /* It is safe to retry this operation */ 5442 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5443 FALSE, FALSE, load, SSD_FULL_SIZE, 5444 softc->timeout_info[SA_TIMEOUT_LOAD]); 5445 5446 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5447 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5448 softc->dsreg = MTIO_DSREG_REST; 5449 xpt_release_ccb(ccb); 5450 5451 if (error || load == 0) { 5452 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5453 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5454 } else if (error == 0) { 5455 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5456 sagetpos(periph); 5457 } 5458 return (error); 5459 } 5460 5461 static int 5462 saerase(struct cam_periph *periph, int longerase) 5463 { 5464 5465 union ccb *ccb; 5466 struct sa_softc *softc; 5467 int error; 5468 5469 softc = (struct sa_softc *)periph->softc; 5470 if (softc->open_rdonly) 5471 return (EBADF); 5472 5473 ccb = cam_periph_getccb(periph, 1); 5474 5475 scsi_erase(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5476 SSD_FULL_SIZE, softc->timeout_info[SA_TIMEOUT_ERASE]); 5477 5478 softc->dsreg = MTIO_DSREG_ZER; 5479 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5480 softc->dsreg = MTIO_DSREG_REST; 5481 5482 xpt_release_ccb(ccb); 5483 return (error); 5484 } 5485 5486 /* 5487 * Fill an sbuf with density data in XML format. This particular macro 5488 * works for multi-byte integer fields. 5489 * 5490 * Note that 1 byte fields aren't supported here. The reason is that the 5491 * compiler does not evaluate the sizeof(), and assumes that any of the 5492 * sizes are possible for a given field. So passing in a multi-byte 5493 * field will result in a warning that the assignment makes an integer 5494 * from a pointer without a cast, if there is an assignment in the 1 byte 5495 * case. 5496 */ 5497 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5498 len_to_go, cur_offset, desc){ \ 5499 size_t cur_field_len; \ 5500 \ 5501 cur_field_len = sizeof(dens_data->field); \ 5502 if (desc_remain < cur_field_len) { \ 5503 len_to_go -= desc_remain; \ 5504 cur_offset += desc_remain; \ 5505 continue; \ 5506 } \ 5507 len_to_go -= cur_field_len; \ 5508 cur_offset += cur_field_len; \ 5509 desc_remain -= cur_field_len; \ 5510 \ 5511 switch (sizeof(dens_data->field)) { \ 5512 case 1: \ 5513 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5514 "field width for SAFILLDENSFIELD")); \ 5515 break; \ 5516 case 2: \ 5517 SASBADDUINTDESC(sb, indent, \ 5518 scsi_2btoul(dens_data->field), %u, field, desc); \ 5519 break; \ 5520 case 3: \ 5521 SASBADDUINTDESC(sb, indent, \ 5522 scsi_3btoul(dens_data->field), %u, field, desc); \ 5523 break; \ 5524 case 4: \ 5525 SASBADDUINTDESC(sb, indent, \ 5526 scsi_4btoul(dens_data->field), %u, field, desc); \ 5527 break; \ 5528 case 8: \ 5529 SASBADDUINTDESC(sb, indent, \ 5530 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5531 field, desc); \ 5532 break; \ 5533 default: \ 5534 break; \ 5535 } \ 5536 }; 5537 /* 5538 * Fill an sbuf with density data in XML format. This particular macro 5539 * works for strings. 5540 */ 5541 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5542 len_to_go, cur_offset, desc){ \ 5543 size_t cur_field_len; \ 5544 char tmpstr[32]; \ 5545 \ 5546 cur_field_len = sizeof(dens_data->field); \ 5547 if (desc_remain < cur_field_len) { \ 5548 len_to_go -= desc_remain; \ 5549 cur_offset += desc_remain; \ 5550 continue; \ 5551 } \ 5552 len_to_go -= cur_field_len; \ 5553 cur_offset += cur_field_len; \ 5554 desc_remain -= cur_field_len; \ 5555 \ 5556 cam_strvis(tmpstr, dens_data->field, \ 5557 sizeof(dens_data->field), sizeof(tmpstr)); \ 5558 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5559 strlen(tmpstr) + 1, desc); \ 5560 }; 5561 5562 /* 5563 * Fill an sbuf with density data descriptors. 5564 */ 5565 static void 5566 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5567 int is_density) 5568 { 5569 struct scsi_density_hdr *hdr; 5570 uint32_t hdr_len; 5571 int len_to_go, cur_offset; 5572 int length_offset; 5573 int num_reports, need_close; 5574 5575 /* 5576 * We need at least the header length. Note that this isn't an 5577 * error, not all tape drives will have every data type. 5578 */ 5579 if (buf_len < sizeof(*hdr)) 5580 goto bailout; 5581 5582 hdr = (struct scsi_density_hdr *)buf; 5583 hdr_len = scsi_2btoul(hdr->length); 5584 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5585 if (is_density) { 5586 length_offset = __offsetof(struct scsi_density_data, 5587 bits_per_mm); 5588 } else { 5589 length_offset = __offsetof(struct scsi_medium_type_data, 5590 num_density_codes); 5591 } 5592 cur_offset = sizeof(*hdr); 5593 5594 num_reports = 0; 5595 need_close = 0; 5596 5597 while (len_to_go > length_offset) { 5598 struct scsi_density_data *dens_data; 5599 struct scsi_medium_type_data *type_data; 5600 int desc_remain; 5601 size_t cur_field_len; 5602 5603 dens_data = NULL; 5604 type_data = NULL; 5605 5606 if (is_density) { 5607 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5608 if (dens_data->byte2 & SDD_DLV) 5609 desc_remain = scsi_2btoul(dens_data->length); 5610 else 5611 desc_remain = SDD_DEFAULT_LENGTH - 5612 length_offset; 5613 } else { 5614 type_data = (struct scsi_medium_type_data *) 5615 &buf[cur_offset]; 5616 desc_remain = scsi_2btoul(type_data->length); 5617 } 5618 5619 len_to_go -= length_offset; 5620 desc_remain = min(desc_remain, len_to_go); 5621 cur_offset += length_offset; 5622 5623 if (need_close != 0) { 5624 SASBENDNODE(sb, *indent, density_entry); 5625 } 5626 5627 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5628 num_reports++; 5629 need_close = 1; 5630 5631 if (is_density) { 5632 SASBADDUINTDESC(sb, *indent, 5633 dens_data->primary_density_code, %u, 5634 primary_density_code, "Primary Density Code"); 5635 SASBADDUINTDESC(sb, *indent, 5636 dens_data->secondary_density_code, %u, 5637 secondary_density_code, "Secondary Density Code"); 5638 SASBADDUINTDESC(sb, *indent, 5639 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5640 "Density Flags"); 5641 5642 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5643 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5644 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5645 desc_remain, len_to_go, cur_offset, "Media width"); 5646 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5647 desc_remain, len_to_go, cur_offset, 5648 "Number of Tracks"); 5649 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5650 desc_remain, len_to_go, cur_offset, "Capacity"); 5651 5652 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5653 desc_remain, len_to_go, cur_offset, 5654 "Assigning Organization"); 5655 5656 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5657 desc_remain, len_to_go, cur_offset, "Density Name"); 5658 5659 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5660 desc_remain, len_to_go, cur_offset, "Description"); 5661 } else { 5662 int i; 5663 5664 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5665 %u, medium_type, "Medium Type"); 5666 5667 cur_field_len = 5668 __offsetof(struct scsi_medium_type_data, 5669 media_width) - 5670 __offsetof(struct scsi_medium_type_data, 5671 num_density_codes); 5672 5673 if (desc_remain < cur_field_len) { 5674 len_to_go -= desc_remain; 5675 cur_offset += desc_remain; 5676 continue; 5677 } 5678 len_to_go -= cur_field_len; 5679 cur_offset += cur_field_len; 5680 desc_remain -= cur_field_len; 5681 5682 SASBADDINTDESC(sb, *indent, 5683 type_data->num_density_codes, %d, 5684 num_density_codes, "Number of Density Codes"); 5685 SASBADDNODE(sb, *indent, density_code_list); 5686 for (i = 0; i < type_data->num_density_codes; 5687 i++) { 5688 SASBADDUINTDESC(sb, *indent, 5689 type_data->primary_density_codes[i], %u, 5690 density_code, "Density Code"); 5691 } 5692 SASBENDNODE(sb, *indent, density_code_list); 5693 5694 SAFILLDENSSB(type_data, sb, *indent, media_width, 5695 desc_remain, len_to_go, cur_offset, 5696 "Media width"); 5697 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5698 desc_remain, len_to_go, cur_offset, 5699 "Medium length"); 5700 5701 /* 5702 * Account for the two reserved bytes. 5703 */ 5704 cur_field_len = sizeof(type_data->reserved2); 5705 if (desc_remain < cur_field_len) { 5706 len_to_go -= desc_remain; 5707 cur_offset += desc_remain; 5708 continue; 5709 } 5710 len_to_go -= cur_field_len; 5711 cur_offset += cur_field_len; 5712 desc_remain -= cur_field_len; 5713 5714 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5715 desc_remain, len_to_go, cur_offset, 5716 "Assigning Organization"); 5717 SAFILLDENSSBSTR(type_data, sb, *indent, 5718 medium_type_name, desc_remain, len_to_go, 5719 cur_offset, "Medium type name"); 5720 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5721 desc_remain, len_to_go, cur_offset, "Description"); 5722 } 5723 } 5724 if (need_close != 0) { 5725 SASBENDNODE(sb, *indent, density_entry); 5726 } 5727 5728 bailout: 5729 return; 5730 } 5731 5732 /* 5733 * Fill an sbuf with density data information 5734 */ 5735 static void 5736 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5737 { 5738 int i, is_density; 5739 5740 SASBADDNODE(sb, *indent, mtdensity); 5741 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5742 "Current Medium Density"); 5743 is_density = 0; 5744 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5745 int tmpint; 5746 5747 if (softc->density_info_valid[i] == 0) 5748 continue; 5749 5750 SASBADDNODE(sb, *indent, density_report); 5751 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5752 tmpint = 1; 5753 is_density = 0; 5754 } else { 5755 tmpint = 0; 5756 is_density = 1; 5757 } 5758 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5759 "Medium type report"); 5760 5761 if (softc->density_type_bits[i] & SRDS_MEDIA) 5762 tmpint = 1; 5763 else 5764 tmpint = 0; 5765 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5766 "Media report"); 5767 5768 safilldenstypesb(sb, indent, softc->density_info[i], 5769 softc->density_info_valid[i], is_density); 5770 SASBENDNODE(sb, *indent, density_report); 5771 } 5772 SASBENDNODE(sb, *indent, mtdensity); 5773 } 5774 5775 /* 5776 * Given a completed REPORT SUPPORTED OPERATION CODES command with timeout 5777 * descriptors, go through the descriptors and set the sa(4) driver 5778 * timeouts to the recommended values. 5779 */ 5780 static void 5781 saloadtimeouts(struct sa_softc *softc, union ccb *ccb) 5782 { 5783 uint32_t valid_len, avail_len = 0, used_len = 0; 5784 struct scsi_report_supported_opcodes_all *hdr; 5785 struct scsi_report_supported_opcodes_descr *desc; 5786 uint8_t *buf; 5787 5788 hdr = (struct scsi_report_supported_opcodes_all *)ccb->csio.data_ptr; 5789 valid_len = ccb->csio.dxfer_len - ccb->csio.resid; 5790 5791 if (valid_len < sizeof(*hdr)) 5792 return; 5793 5794 avail_len = scsi_4btoul(hdr->length) + sizeof(hdr->length); 5795 if ((avail_len != 0) 5796 && (avail_len > valid_len)) { 5797 xpt_print(softc->periph->path, "WARNING: available timeout " 5798 "descriptor len %zu > valid len %u\n", avail_len,valid_len); 5799 } 5800 5801 used_len = sizeof(hdr->length); 5802 avail_len = MIN(avail_len, valid_len - sizeof(*hdr)); 5803 buf = ccb->csio.data_ptr; 5804 while ((avail_len - used_len) > sizeof(*desc)) { 5805 struct scsi_report_supported_opcodes_timeout *td; 5806 uint32_t td_len; 5807 uint32_t rec_time; 5808 uint8_t *cur_ptr; 5809 5810 cur_ptr = &buf[used_len]; 5811 desc = (struct scsi_report_supported_opcodes_descr *)cur_ptr; 5812 5813 used_len += sizeof(*desc); 5814 /* If there's no timeout descriptor, keep going */ 5815 if ((desc->flags & RSO_CTDP) == 0) 5816 continue; 5817 5818 /* 5819 * If we don't have enough space to fit a timeout 5820 * descriptor then we're done. 5821 */ 5822 if ((avail_len - used_len) < sizeof(*td)) { 5823 used_len = avail_len; 5824 continue; 5825 } 5826 5827 cur_ptr = &buf[used_len]; 5828 td = (struct scsi_report_supported_opcodes_timeout *)cur_ptr; 5829 td_len = scsi_2btoul(td->length); 5830 td_len += sizeof(td->length); 5831 used_len += td_len; 5832 5833 if (td_len < sizeof(*td)) 5834 continue; 5835 5836 /* 5837 * Use the recommended timeout. The nominal time is the 5838 * time to wait before querying for status. 5839 */ 5840 rec_time = scsi_4btoul(td->recommended_time); 5841 5842 /* 5843 * Our timeouts are set in thousandths of a seconds. 5844 */ 5845 rec_time *= 1000; 5846 5847 switch(desc->opcode) { 5848 case ERASE: 5849 softc->timeout_info[SA_TIMEOUT_ERASE] = rec_time; 5850 break; 5851 case LOAD_UNLOAD: 5852 softc->timeout_info[SA_TIMEOUT_LOAD] = rec_time; 5853 break; 5854 case LOCATE: 5855 case LOCATE_16: 5856 /* 5857 * We are assuming these are the same timeout. 5858 */ 5859 softc->timeout_info[SA_TIMEOUT_LOCATE] = rec_time; 5860 break; 5861 case MODE_SELECT_6: 5862 case MODE_SELECT_10: 5863 /* 5864 * We are assuming these are the same timeout. 5865 */ 5866 softc->timeout_info[SA_TIMEOUT_MODE_SELECT] = rec_time; 5867 break; 5868 case MODE_SENSE_6: 5869 case MODE_SENSE_10: 5870 /* 5871 * We are assuming these are the same timeout. 5872 */ 5873 softc->timeout_info[SA_TIMEOUT_MODE_SENSE] = rec_time; 5874 break; 5875 case PREVENT_ALLOW: 5876 softc->timeout_info[SA_TIMEOUT_PREVENT] = rec_time; 5877 break; 5878 case SA_READ: 5879 softc->timeout_info[SA_TIMEOUT_READ] = rec_time; 5880 break; 5881 case READ_BLOCK_LIMITS: 5882 softc->timeout_info[SA_TIMEOUT_READ_BLOCK_LIMITS] = 5883 rec_time; 5884 break; 5885 case READ_POSITION: 5886 /* 5887 * Note that this may show up multiple times for 5888 * the short form, long form and extended form 5889 * service actions. We're assuming they are all 5890 * the same. 5891 */ 5892 softc->timeout_info[SA_TIMEOUT_READ_POSITION] =rec_time; 5893 break; 5894 case REPORT_DENSITY_SUPPORT: 5895 softc->timeout_info[SA_TIMEOUT_REP_DENSITY] = rec_time; 5896 break; 5897 case RESERVE_UNIT: 5898 case RELEASE_UNIT: 5899 /* We are assuming these are the same timeout.*/ 5900 softc->timeout_info[SA_TIMEOUT_RESERVE] = rec_time; 5901 break; 5902 case REWIND: 5903 softc->timeout_info[SA_TIMEOUT_REWIND] = rec_time; 5904 break; 5905 case SPACE: 5906 softc->timeout_info[SA_TIMEOUT_SPACE] = rec_time; 5907 break; 5908 case TEST_UNIT_READY: 5909 softc->timeout_info[SA_TIMEOUT_TUR] = rec_time; 5910 break; 5911 case SA_WRITE: 5912 softc->timeout_info[SA_TIMEOUT_WRITE] = rec_time; 5913 break; 5914 case WRITE_FILEMARKS: 5915 softc->timeout_info[SA_TIMEOUT_WRITE_FILEMARKS] = 5916 rec_time; 5917 break; 5918 default: 5919 /* 5920 * We have explicit cases for all of the timeouts 5921 * we use. 5922 */ 5923 break; 5924 } 5925 } 5926 } 5927 5928 #endif /* _KERNEL */ 5929 5930 /* 5931 * Read tape block limits command. 5932 */ 5933 void 5934 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5935 void (*cbfcnp)(struct cam_periph *, union ccb *), 5936 u_int8_t tag_action, 5937 struct scsi_read_block_limits_data *rlimit_buf, 5938 u_int8_t sense_len, u_int32_t timeout) 5939 { 5940 struct scsi_read_block_limits *scsi_cmd; 5941 5942 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5943 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5944 sizeof(*scsi_cmd), timeout); 5945 5946 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5947 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5948 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5949 } 5950 5951 void 5952 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5953 void (*cbfcnp)(struct cam_periph *, union ccb *), 5954 u_int8_t tag_action, int readop, int sli, 5955 int fixed, u_int32_t length, u_int8_t *data_ptr, 5956 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5957 { 5958 struct scsi_sa_rw *scsi_cmd; 5959 int read; 5960 5961 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5962 5963 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5964 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5965 scsi_cmd->sli_fixed = 0; 5966 if (sli && read) 5967 scsi_cmd->sli_fixed |= SAR_SLI; 5968 if (fixed) 5969 scsi_cmd->sli_fixed |= SARW_FIXED; 5970 scsi_ulto3b(length, scsi_cmd->length); 5971 scsi_cmd->control = 0; 5972 5973 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5974 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5975 tag_action, data_ptr, dxfer_len, sense_len, 5976 sizeof(*scsi_cmd), timeout); 5977 } 5978 5979 void 5980 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5981 void (*cbfcnp)(struct cam_periph *, union ccb *), 5982 u_int8_t tag_action, int immediate, int eot, 5983 int reten, int load, u_int8_t sense_len, 5984 u_int32_t timeout) 5985 { 5986 struct scsi_load_unload *scsi_cmd; 5987 5988 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5989 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5990 scsi_cmd->opcode = LOAD_UNLOAD; 5991 if (immediate) 5992 scsi_cmd->immediate = SLU_IMMED; 5993 if (eot) 5994 scsi_cmd->eot_reten_load |= SLU_EOT; 5995 if (reten) 5996 scsi_cmd->eot_reten_load |= SLU_RETEN; 5997 if (load) 5998 scsi_cmd->eot_reten_load |= SLU_LOAD; 5999 6000 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 6001 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 6002 } 6003 6004 void 6005 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 6006 void (*cbfcnp)(struct cam_periph *, union ccb *), 6007 u_int8_t tag_action, int immediate, u_int8_t sense_len, 6008 u_int32_t timeout) 6009 { 6010 struct scsi_rewind *scsi_cmd; 6011 6012 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 6013 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6014 scsi_cmd->opcode = REWIND; 6015 if (immediate) 6016 scsi_cmd->immediate = SREW_IMMED; 6017 6018 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6019 0, sense_len, sizeof(*scsi_cmd), timeout); 6020 } 6021 6022 void 6023 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 6024 void (*cbfcnp)(struct cam_periph *, union ccb *), 6025 u_int8_t tag_action, scsi_space_code code, 6026 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 6027 { 6028 struct scsi_space *scsi_cmd; 6029 6030 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 6031 scsi_cmd->opcode = SPACE; 6032 scsi_cmd->code = code; 6033 scsi_ulto3b(count, scsi_cmd->count); 6034 scsi_cmd->control = 0; 6035 6036 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6037 0, sense_len, sizeof(*scsi_cmd), timeout); 6038 } 6039 6040 void 6041 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 6042 void (*cbfcnp)(struct cam_periph *, union ccb *), 6043 u_int8_t tag_action, int immediate, int setmark, 6044 u_int32_t num_marks, u_int8_t sense_len, 6045 u_int32_t timeout) 6046 { 6047 struct scsi_write_filemarks *scsi_cmd; 6048 6049 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 6050 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6051 scsi_cmd->opcode = WRITE_FILEMARKS; 6052 if (immediate) 6053 scsi_cmd->byte2 |= SWFMRK_IMMED; 6054 if (setmark) 6055 scsi_cmd->byte2 |= SWFMRK_WSMK; 6056 6057 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 6058 6059 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6060 0, sense_len, sizeof(*scsi_cmd), timeout); 6061 } 6062 6063 /* 6064 * The reserve and release unit commands differ only by their opcodes. 6065 */ 6066 void 6067 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 6068 void (*cbfcnp)(struct cam_periph *, union ccb *), 6069 u_int8_t tag_action, int third_party, 6070 int third_party_id, u_int8_t sense_len, 6071 u_int32_t timeout, int reserve) 6072 { 6073 struct scsi_reserve_release_unit *scsi_cmd; 6074 6075 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 6076 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6077 6078 if (reserve) 6079 scsi_cmd->opcode = RESERVE_UNIT; 6080 else 6081 scsi_cmd->opcode = RELEASE_UNIT; 6082 6083 if (third_party) { 6084 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 6085 scsi_cmd->lun_thirdparty |= 6086 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 6087 } 6088 6089 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6090 0, sense_len, sizeof(*scsi_cmd), timeout); 6091 } 6092 6093 void 6094 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 6095 void (*cbfcnp)(struct cam_periph *, union ccb *), 6096 u_int8_t tag_action, int immediate, int long_erase, 6097 u_int8_t sense_len, u_int32_t timeout) 6098 { 6099 struct scsi_erase *scsi_cmd; 6100 6101 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 6102 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6103 6104 scsi_cmd->opcode = ERASE; 6105 6106 if (immediate) 6107 scsi_cmd->lun_imm_long |= SE_IMMED; 6108 6109 if (long_erase) 6110 scsi_cmd->lun_imm_long |= SE_LONG; 6111 6112 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 6113 0, sense_len, sizeof(*scsi_cmd), timeout); 6114 } 6115 6116 /* 6117 * Read Tape Position command. 6118 */ 6119 void 6120 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 6121 void (*cbfcnp)(struct cam_periph *, union ccb *), 6122 u_int8_t tag_action, int hardsoft, 6123 struct scsi_tape_position_data *sbp, 6124 u_int8_t sense_len, u_int32_t timeout) 6125 { 6126 struct scsi_tape_read_position *scmd; 6127 6128 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 6129 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 6130 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 6131 bzero(scmd, sizeof(*scmd)); 6132 scmd->opcode = READ_POSITION; 6133 scmd->byte1 = hardsoft; 6134 } 6135 6136 /* 6137 * Read Tape Position command. 6138 */ 6139 void 6140 scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 6141 void (*cbfcnp)(struct cam_periph *, union ccb *), 6142 u_int8_t tag_action, int service_action, 6143 u_int8_t *data_ptr, u_int32_t length, 6144 u_int32_t sense_len, u_int32_t timeout) 6145 { 6146 struct scsi_tape_read_position *scmd; 6147 6148 cam_fill_csio(csio, 6149 retries, 6150 cbfcnp, 6151 /*flags*/CAM_DIR_IN, 6152 tag_action, 6153 /*data_ptr*/data_ptr, 6154 /*dxfer_len*/length, 6155 sense_len, 6156 sizeof(*scmd), 6157 timeout); 6158 6159 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 6160 bzero(scmd, sizeof(*scmd)); 6161 scmd->opcode = READ_POSITION; 6162 scmd->byte1 = service_action; 6163 /* 6164 * The length is only currently set (as of SSC4r03) if the extended 6165 * form is specified. The other forms have fixed lengths. 6166 */ 6167 if (service_action == SA_RPOS_EXTENDED_FORM) 6168 scsi_ulto2b(length, scmd->length); 6169 } 6170 6171 /* 6172 * Set Tape Position command. 6173 */ 6174 void 6175 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 6176 void (*cbfcnp)(struct cam_periph *, union ccb *), 6177 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 6178 u_int8_t sense_len, u_int32_t timeout) 6179 { 6180 struct scsi_tape_locate *scmd; 6181 6182 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 6183 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 6184 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 6185 bzero(scmd, sizeof(*scmd)); 6186 scmd->opcode = LOCATE; 6187 if (hardsoft) 6188 scmd->byte1 |= SA_SPOS_BT; 6189 scsi_ulto4b(blkno, scmd->blkaddr); 6190 } 6191 6192 /* 6193 * XXX KDM figure out how to make a compatibility function. 6194 */ 6195 void 6196 scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 6197 void (*cbfcnp)(struct cam_periph *, union ccb *), 6198 u_int8_t tag_action, int immed, int cp, int hard, 6199 int64_t partition, u_int32_t block_address, 6200 int sense_len, u_int32_t timeout) 6201 { 6202 struct scsi_tape_locate *scmd; 6203 6204 cam_fill_csio(csio, 6205 retries, 6206 cbfcnp, 6207 CAM_DIR_NONE, 6208 tag_action, 6209 /*data_ptr*/ NULL, 6210 /*dxfer_len*/ 0, 6211 sense_len, 6212 sizeof(*scmd), 6213 timeout); 6214 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 6215 bzero(scmd, sizeof(*scmd)); 6216 scmd->opcode = LOCATE; 6217 if (immed) 6218 scmd->byte1 |= SA_SPOS_IMMED; 6219 if (cp) 6220 scmd->byte1 |= SA_SPOS_CP; 6221 if (hard) 6222 scmd->byte1 |= SA_SPOS_BT; 6223 scsi_ulto4b(block_address, scmd->blkaddr); 6224 scmd->partition = partition; 6225 } 6226 6227 void 6228 scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 6229 void (*cbfcnp)(struct cam_periph *, union ccb *), 6230 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 6231 int bam, int64_t partition, u_int64_t logical_id, 6232 int sense_len, u_int32_t timeout) 6233 { 6234 6235 struct scsi_locate_16 *scsi_cmd; 6236 6237 cam_fill_csio(csio, 6238 retries, 6239 cbfcnp, 6240 /*flags*/CAM_DIR_NONE, 6241 tag_action, 6242 /*data_ptr*/NULL, 6243 /*dxfer_len*/0, 6244 sense_len, 6245 sizeof(*scsi_cmd), 6246 timeout); 6247 6248 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 6249 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6250 scsi_cmd->opcode = LOCATE_16; 6251 if (immed) 6252 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 6253 if (cp) 6254 scsi_cmd->byte1 |= SA_LC_CP; 6255 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 6256 6257 scsi_cmd->byte2 |= bam; 6258 scsi_cmd->partition = partition; 6259 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 6260 } 6261 6262 void 6263 scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 6264 void (*cbfcnp)(struct cam_periph *, union ccb *), 6265 u_int8_t tag_action, int media, int medium_type, 6266 u_int8_t *data_ptr, u_int32_t length, 6267 u_int32_t sense_len, u_int32_t timeout) 6268 { 6269 struct scsi_report_density_support *scsi_cmd; 6270 6271 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 6272 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6273 6274 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 6275 if (media != 0) 6276 scsi_cmd->byte1 |= SRDS_MEDIA; 6277 if (medium_type != 0) 6278 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 6279 6280 scsi_ulto2b(length, scsi_cmd->length); 6281 6282 cam_fill_csio(csio, 6283 retries, 6284 cbfcnp, 6285 /*flags*/CAM_DIR_IN, 6286 tag_action, 6287 /*data_ptr*/data_ptr, 6288 /*dxfer_len*/length, 6289 sense_len, 6290 sizeof(*scsi_cmd), 6291 timeout); 6292 } 6293 6294 void 6295 scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 6296 void (*cbfcnp)(struct cam_periph *, union ccb *), 6297 u_int8_t tag_action, int byte1, u_int32_t proportion, 6298 u_int32_t sense_len, u_int32_t timeout) 6299 { 6300 struct scsi_set_capacity *scsi_cmd; 6301 6302 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 6303 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6304 6305 scsi_cmd->opcode = SET_CAPACITY; 6306 6307 scsi_cmd->byte1 = byte1; 6308 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 6309 6310 cam_fill_csio(csio, 6311 retries, 6312 cbfcnp, 6313 /*flags*/CAM_DIR_NONE, 6314 tag_action, 6315 /*data_ptr*/NULL, 6316 /*dxfer_len*/0, 6317 sense_len, 6318 sizeof(*scsi_cmd), 6319 timeout); 6320 } 6321 6322 void 6323 scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 6324 void (*cbfcnp)(struct cam_periph *, union ccb *), 6325 u_int8_t tag_action, int byte1, int byte2, 6326 u_int8_t *data_ptr, u_int32_t dxfer_len, 6327 u_int32_t sense_len, u_int32_t timeout) 6328 { 6329 struct scsi_format_medium *scsi_cmd; 6330 6331 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 6332 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6333 6334 scsi_cmd->opcode = FORMAT_MEDIUM; 6335 6336 scsi_cmd->byte1 = byte1; 6337 scsi_cmd->byte2 = byte2; 6338 6339 scsi_ulto2b(dxfer_len, scsi_cmd->length); 6340 6341 cam_fill_csio(csio, 6342 retries, 6343 cbfcnp, 6344 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 6345 tag_action, 6346 /*data_ptr*/ data_ptr, 6347 /*dxfer_len*/ dxfer_len, 6348 sense_len, 6349 sizeof(*scsi_cmd), 6350 timeout); 6351 } 6352 6353 void 6354 scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 6355 void (*cbfcnp)(struct cam_periph *, union ccb *), 6356 u_int8_t tag_action, int allow_overwrite, int partition, 6357 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 6358 { 6359 struct scsi_allow_overwrite *scsi_cmd; 6360 6361 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 6362 bzero(scsi_cmd, sizeof(*scsi_cmd)); 6363 6364 scsi_cmd->opcode = ALLOW_OVERWRITE; 6365 6366 scsi_cmd->allow_overwrite = allow_overwrite; 6367 scsi_cmd->partition = partition; 6368 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 6369 6370 cam_fill_csio(csio, 6371 retries, 6372 cbfcnp, 6373 CAM_DIR_NONE, 6374 tag_action, 6375 /*data_ptr*/ NULL, 6376 /*dxfer_len*/ 0, 6377 sense_len, 6378 sizeof(*scsi_cmd), 6379 timeout); 6380 } 6381