1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * Copyright (c) 2013, 2014, 2015 Spectra Logic Corporation 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #include <sys/time.h> 41 #include <sys/bio.h> 42 #include <sys/limits.h> 43 #include <sys/malloc.h> 44 #include <sys/mtio.h> 45 #ifdef _KERNEL 46 #include <sys/conf.h> 47 #include <sys/sbuf.h> 48 #include <sys/sysctl.h> 49 #include <sys/taskqueue.h> 50 #endif 51 #include <sys/fcntl.h> 52 #include <sys/devicestat.h> 53 54 #ifndef _KERNEL 55 #include <stdio.h> 56 #include <string.h> 57 #endif 58 59 #include <cam/cam.h> 60 #include <cam/cam_ccb.h> 61 #include <cam/cam_periph.h> 62 #include <cam/cam_xpt_periph.h> 63 #include <cam/cam_debug.h> 64 65 #include <cam/scsi/scsi_all.h> 66 #include <cam/scsi/scsi_message.h> 67 #include <cam/scsi/scsi_sa.h> 68 69 #ifdef _KERNEL 70 71 #include <opt_sa.h> 72 73 #ifndef SA_IO_TIMEOUT 74 #define SA_IO_TIMEOUT 32 75 #endif 76 #ifndef SA_SPACE_TIMEOUT 77 #define SA_SPACE_TIMEOUT 1 * 60 78 #endif 79 #ifndef SA_REWIND_TIMEOUT 80 #define SA_REWIND_TIMEOUT 2 * 60 81 #endif 82 #ifndef SA_ERASE_TIMEOUT 83 #define SA_ERASE_TIMEOUT 4 * 60 84 #endif 85 #ifndef SA_REP_DENSITY_TIMEOUT 86 #define SA_REP_DENSITY_TIMEOUT 90 87 #endif 88 89 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 90 91 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 92 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 93 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 94 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 95 #define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000) 96 97 /* 98 * Additional options that can be set for config: SA_1FM_AT_EOT 99 */ 100 101 #ifndef UNUSED_PARAMETER 102 #define UNUSED_PARAMETER(x) x = x 103 #endif 104 105 #define QFRLS(ccb) \ 106 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 107 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 108 109 /* 110 * Driver states 111 */ 112 113 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 114 115 typedef enum { 116 SA_STATE_NORMAL, SA_STATE_ABNORMAL 117 } sa_state; 118 119 #define ccb_pflags ppriv_field0 120 #define ccb_bp ppriv_ptr1 121 122 /* bits in ccb_pflags */ 123 #define SA_POSITION_UPDATED 0x1 124 125 126 typedef enum { 127 SA_FLAG_OPEN = 0x0001, 128 SA_FLAG_FIXED = 0x0002, 129 SA_FLAG_TAPE_LOCKED = 0x0004, 130 SA_FLAG_TAPE_MOUNTED = 0x0008, 131 SA_FLAG_TAPE_WP = 0x0010, 132 SA_FLAG_TAPE_WRITTEN = 0x0020, 133 SA_FLAG_EOM_PENDING = 0x0040, 134 SA_FLAG_EIO_PENDING = 0x0080, 135 SA_FLAG_EOF_PENDING = 0x0100, 136 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 137 SA_FLAG_EOF_PENDING), 138 SA_FLAG_INVALID = 0x0200, 139 SA_FLAG_COMP_ENABLED = 0x0400, 140 SA_FLAG_COMP_SUPP = 0x0800, 141 SA_FLAG_COMP_UNSUPP = 0x1000, 142 SA_FLAG_TAPE_FROZEN = 0x2000, 143 SA_FLAG_PROTECT_SUPP = 0x4000, 144 145 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 146 SA_FLAG_COMP_UNSUPP), 147 SA_FLAG_SCTX_INIT = 0x8000 148 } sa_flags; 149 150 typedef enum { 151 SA_MODE_REWIND = 0x00, 152 SA_MODE_NOREWIND = 0x01, 153 SA_MODE_OFFLINE = 0x02 154 } sa_mode; 155 156 typedef enum { 157 SA_PARAM_NONE = 0x000, 158 SA_PARAM_BLOCKSIZE = 0x001, 159 SA_PARAM_DENSITY = 0x002, 160 SA_PARAM_COMPRESSION = 0x004, 161 SA_PARAM_BUFF_MODE = 0x008, 162 SA_PARAM_NUMBLOCKS = 0x010, 163 SA_PARAM_WP = 0x020, 164 SA_PARAM_SPEED = 0x040, 165 SA_PARAM_DENSITY_EXT = 0x080, 166 SA_PARAM_LBP = 0x100, 167 SA_PARAM_ALL = 0x1ff 168 } sa_params; 169 170 typedef enum { 171 SA_QUIRK_NONE = 0x000, 172 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 173 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 174 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 175 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 176 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 177 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 178 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 179 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 180 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 181 } sa_quirks; 182 183 #define SA_QUIRK_BIT_STRING \ 184 "\020" \ 185 "\001NOCOMP" \ 186 "\002FIXED" \ 187 "\003VARIABLE" \ 188 "\0042FM" \ 189 "\0051FM" \ 190 "\006NODREAD" \ 191 "\007NO_MODESEL" \ 192 "\010NO_CPAGE" \ 193 "\011NO_LONG_POS" 194 195 #define SAMODE(z) (dev2unit(z) & 0x3) 196 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 197 198 #define SA_NOT_CTLDEV 0 199 #define SA_CTLDEV 1 200 201 #define SA_ATYPE_R 0 202 #define SA_ATYPE_NR 1 203 #define SA_ATYPE_ER 2 204 #define SA_NUM_ATYPES 3 205 206 #define SAMINOR(ctl, access) \ 207 ((ctl << 4) | (access & 0x3)) 208 209 struct sa_devs { 210 struct cdev *ctl_dev; 211 struct cdev *r_dev; 212 struct cdev *nr_dev; 213 struct cdev *er_dev; 214 }; 215 216 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 217 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 218 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 219 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 220 221 #define SASBADDINT(sb, indent, data, fmt, name) \ 222 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 223 NULL) 224 225 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 226 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 227 desc) 228 229 #define SASBADDUINT(sb, indent, data, fmt, name) \ 230 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 231 NULL) 232 233 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 234 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 235 desc) 236 237 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 238 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 239 NULL) 240 241 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 242 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 243 desc) 244 245 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 246 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 247 248 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 249 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 250 251 #define SASBADDNODE(sb, indent, name) { \ 252 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 253 "node"); \ 254 indent += 2; \ 255 } 256 257 #define SASBADDNODENUM(sb, indent, name, num) { \ 258 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 259 #name, "node", num); \ 260 indent += 2; \ 261 } 262 263 #define SASBENDNODE(sb, indent, name) { \ 264 indent -= 2; \ 265 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 266 } 267 268 #define SA_DENSITY_TYPES 4 269 270 struct sa_prot_state { 271 int initialized; 272 uint32_t prot_method; 273 uint32_t pi_length; 274 uint32_t lbp_w; 275 uint32_t lbp_r; 276 uint32_t rbdp; 277 }; 278 279 struct sa_prot_info { 280 struct sa_prot_state cur_prot_state; 281 struct sa_prot_state pending_prot_state; 282 }; 283 284 /* 285 * A table mapping protection parameters to their types and values. 286 */ 287 struct sa_prot_map { 288 char *name; 289 mt_param_set_type param_type; 290 off_t offset; 291 uint32_t min_val; 292 uint32_t max_val; 293 uint32_t *value; 294 } sa_prot_table[] = { 295 { "prot_method", MT_PARAM_SET_UNSIGNED, 296 __offsetof(struct sa_prot_state, prot_method), 297 /*min_val*/ 0, /*max_val*/ 255, NULL }, 298 { "pi_length", MT_PARAM_SET_UNSIGNED, 299 __offsetof(struct sa_prot_state, pi_length), 300 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 301 { "lbp_w", MT_PARAM_SET_UNSIGNED, 302 __offsetof(struct sa_prot_state, lbp_w), 303 /*min_val*/ 0, /*max_val*/ 1, NULL }, 304 { "lbp_r", MT_PARAM_SET_UNSIGNED, 305 __offsetof(struct sa_prot_state, lbp_r), 306 /*min_val*/ 0, /*max_val*/ 1, NULL }, 307 { "rbdp", MT_PARAM_SET_UNSIGNED, 308 __offsetof(struct sa_prot_state, rbdp), 309 /*min_val*/ 0, /*max_val*/ 1, NULL } 310 }; 311 312 #define SA_NUM_PROT_ENTS sizeof(sa_prot_table)/sizeof(sa_prot_table[0]) 313 314 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 315 && (softc->prot_info.cur_prot_state.initialized != 0) \ 316 && (softc->prot_info.cur_prot_state.prot_method != 0)) 317 318 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 319 320 struct sa_softc { 321 sa_state state; 322 sa_flags flags; 323 sa_quirks quirks; 324 u_int si_flags; 325 struct cam_periph *periph; 326 struct bio_queue_head bio_queue; 327 int queue_count; 328 struct devstat *device_stats; 329 struct sa_devs devs; 330 int open_count; 331 int num_devs_to_destroy; 332 int blk_gran; 333 int blk_mask; 334 int blk_shift; 335 u_int32_t max_blk; 336 u_int32_t min_blk; 337 u_int32_t maxio; 338 u_int32_t cpi_maxio; 339 int allow_io_split; 340 u_int32_t comp_algorithm; 341 u_int32_t saved_comp_algorithm; 342 u_int32_t media_blksize; 343 u_int32_t last_media_blksize; 344 u_int32_t media_numblks; 345 u_int8_t media_density; 346 u_int8_t speed; 347 u_int8_t scsi_rev; 348 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 349 int buffer_mode; 350 int filemarks; 351 union ccb saved_ccb; 352 int last_resid_was_io; 353 uint8_t density_type_bits[SA_DENSITY_TYPES]; 354 int density_info_valid[SA_DENSITY_TYPES]; 355 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 356 357 struct sa_prot_info prot_info; 358 359 int sili; 360 int eot_warn; 361 362 /* 363 * Current position information. -1 means that the given value is 364 * unknown. fileno and blkno are always calculated. blkno is 365 * relative to the previous file mark. rep_fileno and rep_blkno 366 * are as reported by the drive, if it supports the long form 367 * report for the READ POSITION command. rep_blkno is relative to 368 * the beginning of the partition. 369 * 370 * bop means that the drive is at the beginning of the partition. 371 * eop means that the drive is between early warning and end of 372 * partition, inside the current partition. 373 * bpew means that the position is in a PEWZ (Programmable Early 374 * Warning Zone) 375 */ 376 daddr_t partition; /* Absolute from BOT */ 377 daddr_t fileno; /* Relative to beginning of partition */ 378 daddr_t blkno; /* Relative to last file mark */ 379 daddr_t rep_blkno; /* Relative to beginning of partition */ 380 daddr_t rep_fileno; /* Relative to beginning of partition */ 381 int bop; /* Beginning of Partition */ 382 int eop; /* End of Partition */ 383 int bpew; /* Beyond Programmable Early Warning */ 384 385 /* 386 * Latched Error Info 387 */ 388 struct { 389 struct scsi_sense_data _last_io_sense; 390 u_int64_t _last_io_resid; 391 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 392 struct scsi_sense_data _last_ctl_sense; 393 u_int64_t _last_ctl_resid; 394 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 395 #define last_io_sense errinfo._last_io_sense 396 #define last_io_resid errinfo._last_io_resid 397 #define last_io_cdb errinfo._last_io_cdb 398 #define last_ctl_sense errinfo._last_ctl_sense 399 #define last_ctl_resid errinfo._last_ctl_resid 400 #define last_ctl_cdb errinfo._last_ctl_cdb 401 } errinfo; 402 /* 403 * Misc other flags/state 404 */ 405 u_int32_t 406 : 29, 407 open_rdonly : 1, /* open read-only */ 408 open_pending_mount : 1, /* open pending mount */ 409 ctrl_mode : 1; /* control device open */ 410 411 struct task sysctl_task; 412 struct sysctl_ctx_list sysctl_ctx; 413 struct sysctl_oid *sysctl_tree; 414 }; 415 416 struct sa_quirk_entry { 417 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 418 sa_quirks quirks; /* specific quirk type */ 419 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 420 }; 421 422 static struct sa_quirk_entry sa_quirk_table[] = 423 { 424 { 425 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 426 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 427 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 428 }, 429 { 430 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 431 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 432 }, 433 { 434 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 435 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 436 }, 437 { 438 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 439 "Python*", "*"}, SA_QUIRK_NODREAD, 0 440 }, 441 { 442 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 443 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 444 }, 445 { 446 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 447 "VIPER 2525 25462", "-011"}, 448 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 449 }, 450 { 451 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 452 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 453 }, 454 #if 0 455 { 456 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 457 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 458 }, 459 #endif 460 { 461 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 462 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 463 }, 464 { 465 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 466 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 467 }, 468 { 469 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 470 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 471 }, 472 { 473 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 474 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 475 }, 476 { 477 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 478 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 479 }, 480 { 481 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 482 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 483 }, 484 { /* jreynold@primenet.com */ 485 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 486 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 487 }, 488 { /* mike@sentex.net */ 489 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 490 "STT20000*", "*"}, SA_QUIRK_1FM, 0 491 }, 492 { 493 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 494 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 495 }, 496 { 497 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 498 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 499 }, 500 { 501 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 502 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 503 }, 504 { 505 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 506 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 507 }, 508 { 509 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 510 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 511 }, 512 { 513 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 514 " SLR*", "*"}, SA_QUIRK_1FM, 0 515 }, 516 { 517 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 518 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 519 }, 520 { 521 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 522 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 523 } 524 }; 525 526 static d_open_t saopen; 527 static d_close_t saclose; 528 static d_strategy_t sastrategy; 529 static d_ioctl_t saioctl; 530 static periph_init_t sainit; 531 static periph_ctor_t saregister; 532 static periph_oninv_t saoninvalidate; 533 static periph_dtor_t sacleanup; 534 static periph_start_t sastart; 535 static void saasync(void *callback_arg, u_int32_t code, 536 struct cam_path *path, void *arg); 537 static void sadone(struct cam_periph *periph, 538 union ccb *start_ccb); 539 static int saerror(union ccb *ccb, u_int32_t cam_flags, 540 u_int32_t sense_flags); 541 static int samarkswanted(struct cam_periph *); 542 static int sacheckeod(struct cam_periph *periph); 543 static int sagetparams(struct cam_periph *periph, 544 sa_params params_to_get, 545 u_int32_t *blocksize, u_int8_t *density, 546 u_int32_t *numblocks, int *buff_mode, 547 u_int8_t *write_protect, u_int8_t *speed, 548 int *comp_supported, int *comp_enabled, 549 u_int32_t *comp_algorithm, 550 sa_comp_t *comp_page, 551 struct scsi_control_data_prot_subpage 552 *prot_page, int dp_size, 553 int prot_changeable); 554 static int sasetprot(struct cam_periph *periph, 555 struct sa_prot_state *new_prot); 556 static int sasetparams(struct cam_periph *periph, 557 sa_params params_to_set, 558 u_int32_t blocksize, u_int8_t density, 559 u_int32_t comp_algorithm, 560 u_int32_t sense_flags); 561 static int sasetsili(struct cam_periph *periph, 562 struct mtparamset *ps, int num_params); 563 static int saseteotwarn(struct cam_periph *periph, 564 struct mtparamset *ps, int num_params); 565 static void safillprot(struct sa_softc *softc, int *indent, 566 struct sbuf *sb); 567 static void sapopulateprots(struct sa_prot_state *cur_state, 568 struct sa_prot_map *new_table, 569 int table_ents); 570 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 571 int table_ents); 572 static int sasetprotents(struct cam_periph *periph, 573 struct mtparamset *ps, int num_params); 574 static struct sa_param_ent *safindparament(struct mtparamset *ps); 575 static int saparamsetlist(struct cam_periph *periph, 576 struct mtsetlist *list, int need_copy); 577 static int saextget(struct cdev *dev, struct cam_periph *periph, 578 struct sbuf *sb, struct mtextget *g); 579 static int saparamget(struct sa_softc *softc, struct sbuf *sb); 580 static void saprevent(struct cam_periph *periph, int action); 581 static int sarewind(struct cam_periph *periph); 582 static int saspace(struct cam_periph *periph, int count, 583 scsi_space_code code); 584 static void sadevgonecb(void *arg); 585 static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 586 static int samount(struct cam_periph *, int, struct cdev *); 587 static int saretension(struct cam_periph *periph); 588 static int sareservereleaseunit(struct cam_periph *periph, 589 int reserve); 590 static int saloadunload(struct cam_periph *periph, int load); 591 static int saerase(struct cam_periph *periph, int longerase); 592 static int sawritefilemarks(struct cam_periph *periph, 593 int nmarks, int setmarks, int immed); 594 static int sagetpos(struct cam_periph *periph); 595 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 596 static int sasetpos(struct cam_periph *periph, int, 597 struct mtlocate *); 598 static void safilldenstypesb(struct sbuf *sb, int *indent, 599 uint8_t *buf, int buf_len, 600 int is_density); 601 static void safilldensitysb(struct sa_softc *softc, int *indent, 602 struct sbuf *sb); 603 604 605 #ifndef SA_DEFAULT_IO_SPLIT 606 #define SA_DEFAULT_IO_SPLIT 0 607 #endif 608 609 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 610 611 /* 612 * Tunable to allow the user to set a global allow_io_split value. Note 613 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 614 * is bad behavior, because it hides the true tape block size from the 615 * application. 616 */ 617 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 618 "CAM Sequential Access Tape Driver"); 619 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 620 &sa_allow_io_split, 0, "Default I/O split value"); 621 622 static struct periph_driver sadriver = 623 { 624 sainit, "sa", 625 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 626 }; 627 628 PERIPHDRIVER_DECLARE(sa, sadriver); 629 630 /* For 2.2-stable support */ 631 #ifndef D_TAPE 632 #define D_TAPE 0 633 #endif 634 635 636 static struct cdevsw sa_cdevsw = { 637 .d_version = D_VERSION, 638 .d_open = saopen, 639 .d_close = saclose, 640 .d_read = physread, 641 .d_write = physwrite, 642 .d_ioctl = saioctl, 643 .d_strategy = sastrategy, 644 .d_name = "sa", 645 .d_flags = D_TAPE | D_TRACKCLOSE, 646 }; 647 648 static int 649 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 650 { 651 struct cam_periph *periph; 652 struct sa_softc *softc; 653 int error; 654 655 periph = (struct cam_periph *)dev->si_drv1; 656 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 657 return (ENXIO); 658 } 659 660 cam_periph_lock(periph); 661 662 softc = (struct sa_softc *)periph->softc; 663 664 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 665 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 666 667 if (SA_IS_CTRL(dev)) { 668 softc->ctrl_mode = 1; 669 softc->open_count++; 670 cam_periph_unlock(periph); 671 return (0); 672 } 673 674 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 675 cam_periph_unlock(periph); 676 cam_periph_release(periph); 677 return (error); 678 } 679 680 if (softc->flags & SA_FLAG_OPEN) { 681 error = EBUSY; 682 } else if (softc->flags & SA_FLAG_INVALID) { 683 error = ENXIO; 684 } else { 685 /* 686 * Preserve whether this is a read_only open. 687 */ 688 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 689 690 /* 691 * The function samount ensures media is loaded and ready. 692 * It also does a device RESERVE if the tape isn't yet mounted. 693 * 694 * If the mount fails and this was a non-blocking open, 695 * make this a 'open_pending_mount' action. 696 */ 697 error = samount(periph, flags, dev); 698 if (error && (flags & O_NONBLOCK)) { 699 softc->flags |= SA_FLAG_OPEN; 700 softc->open_pending_mount = 1; 701 softc->open_count++; 702 cam_periph_unhold(periph); 703 cam_periph_unlock(periph); 704 return (0); 705 } 706 } 707 708 if (error) { 709 cam_periph_unhold(periph); 710 cam_periph_unlock(periph); 711 cam_periph_release(periph); 712 return (error); 713 } 714 715 saprevent(periph, PR_PREVENT); 716 softc->flags |= SA_FLAG_OPEN; 717 softc->open_count++; 718 719 cam_periph_unhold(periph); 720 cam_periph_unlock(periph); 721 return (error); 722 } 723 724 static int 725 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 726 { 727 struct cam_periph *periph; 728 struct sa_softc *softc; 729 int mode, error, writing, tmp, i; 730 int closedbits = SA_FLAG_OPEN; 731 732 mode = SAMODE(dev); 733 periph = (struct cam_periph *)dev->si_drv1; 734 if (periph == NULL) 735 return (ENXIO); 736 737 cam_periph_lock(periph); 738 739 softc = (struct sa_softc *)periph->softc; 740 741 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 742 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 743 744 745 softc->open_rdonly = 0; 746 if (SA_IS_CTRL(dev)) { 747 softc->ctrl_mode = 0; 748 softc->open_count--; 749 cam_periph_unlock(periph); 750 cam_periph_release(periph); 751 return (0); 752 } 753 754 if (softc->open_pending_mount) { 755 softc->flags &= ~SA_FLAG_OPEN; 756 softc->open_pending_mount = 0; 757 softc->open_count--; 758 cam_periph_unlock(periph); 759 cam_periph_release(periph); 760 return (0); 761 } 762 763 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 764 cam_periph_unlock(periph); 765 return (error); 766 } 767 768 /* 769 * Were we writing the tape? 770 */ 771 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 772 773 /* 774 * See whether or not we need to write filemarks. If this 775 * fails, we probably have to assume we've lost tape 776 * position. 777 */ 778 error = sacheckeod(periph); 779 if (error) { 780 xpt_print(periph->path, 781 "failed to write terminating filemark(s)\n"); 782 softc->flags |= SA_FLAG_TAPE_FROZEN; 783 } 784 785 /* 786 * Whatever we end up doing, allow users to eject tapes from here on. 787 */ 788 saprevent(periph, PR_ALLOW); 789 790 /* 791 * Decide how to end... 792 */ 793 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 794 closedbits |= SA_FLAG_TAPE_FROZEN; 795 } else switch (mode) { 796 case SA_MODE_OFFLINE: 797 /* 798 * An 'offline' close is an unconditional release of 799 * frozen && mount conditions, irrespective of whether 800 * these operations succeeded. The reason for this is 801 * to allow at least some kind of programmatic way 802 * around our state getting all fouled up. If somebody 803 * issues an 'offline' command, that will be allowed 804 * to clear state. 805 */ 806 (void) sarewind(periph); 807 (void) saloadunload(periph, FALSE); 808 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 809 break; 810 case SA_MODE_REWIND: 811 /* 812 * If the rewind fails, return an error- if anyone cares, 813 * but not overwriting any previous error. 814 * 815 * We don't clear the notion of mounted here, but we do 816 * clear the notion of frozen if we successfully rewound. 817 */ 818 tmp = sarewind(periph); 819 if (tmp) { 820 if (error != 0) 821 error = tmp; 822 } else { 823 closedbits |= SA_FLAG_TAPE_FROZEN; 824 } 825 break; 826 case SA_MODE_NOREWIND: 827 /* 828 * If we're not rewinding/unloading the tape, find out 829 * whether we need to back up over one of two filemarks 830 * we wrote (if we wrote two filemarks) so that appends 831 * from this point on will be sane. 832 */ 833 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 834 tmp = saspace(periph, -1, SS_FILEMARKS); 835 if (tmp) { 836 xpt_print(periph->path, "unable to backspace " 837 "over one of double filemarks at end of " 838 "tape\n"); 839 xpt_print(periph->path, "it is possible that " 840 "this device needs a SA_QUIRK_1FM quirk set" 841 "for it\n"); 842 softc->flags |= SA_FLAG_TAPE_FROZEN; 843 } 844 } 845 break; 846 default: 847 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 848 /* NOTREACHED */ 849 break; 850 } 851 852 /* 853 * We wish to note here that there are no more filemarks to be written. 854 */ 855 softc->filemarks = 0; 856 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 857 858 /* 859 * And we are no longer open for business. 860 */ 861 softc->flags &= ~closedbits; 862 softc->open_count--; 863 864 /* 865 * Invalidate any density information that depends on having tape 866 * media in the drive. 867 */ 868 for (i = 0; i < SA_DENSITY_TYPES; i++) { 869 if (softc->density_type_bits[i] & SRDS_MEDIA) 870 softc->density_info_valid[i] = 0; 871 } 872 873 /* 874 * Inform users if tape state if frozen.... 875 */ 876 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 877 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 878 "REWIND or MTEOM command to clear this state.\n"); 879 } 880 881 /* release the device if it is no longer mounted */ 882 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 883 sareservereleaseunit(periph, FALSE); 884 885 cam_periph_unhold(periph); 886 cam_periph_unlock(periph); 887 cam_periph_release(periph); 888 889 return (error); 890 } 891 892 /* 893 * Actually translate the requested transfer into one the physical driver 894 * can understand. The transfer is described by a buf and will include 895 * only one physical transfer. 896 */ 897 static void 898 sastrategy(struct bio *bp) 899 { 900 struct cam_periph *periph; 901 struct sa_softc *softc; 902 903 bp->bio_resid = bp->bio_bcount; 904 if (SA_IS_CTRL(bp->bio_dev)) { 905 biofinish(bp, NULL, EINVAL); 906 return; 907 } 908 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 909 if (periph == NULL) { 910 biofinish(bp, NULL, ENXIO); 911 return; 912 } 913 cam_periph_lock(periph); 914 915 softc = (struct sa_softc *)periph->softc; 916 917 if (softc->flags & SA_FLAG_INVALID) { 918 cam_periph_unlock(periph); 919 biofinish(bp, NULL, ENXIO); 920 return; 921 } 922 923 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 924 cam_periph_unlock(periph); 925 biofinish(bp, NULL, EPERM); 926 return; 927 } 928 929 /* 930 * This should actually never occur as the write(2) 931 * system call traps attempts to write to a read-only 932 * file descriptor. 933 */ 934 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 935 cam_periph_unlock(periph); 936 biofinish(bp, NULL, EBADF); 937 return; 938 } 939 940 if (softc->open_pending_mount) { 941 int error = samount(periph, 0, bp->bio_dev); 942 if (error) { 943 cam_periph_unlock(periph); 944 biofinish(bp, NULL, ENXIO); 945 return; 946 } 947 saprevent(periph, PR_PREVENT); 948 softc->open_pending_mount = 0; 949 } 950 951 952 /* 953 * If it's a null transfer, return immediately 954 */ 955 if (bp->bio_bcount == 0) { 956 cam_periph_unlock(periph); 957 biodone(bp); 958 return; 959 } 960 961 /* valid request? */ 962 if (softc->flags & SA_FLAG_FIXED) { 963 /* 964 * Fixed block device. The byte count must 965 * be a multiple of our block size. 966 */ 967 if (((softc->blk_mask != ~0) && 968 ((bp->bio_bcount & softc->blk_mask) != 0)) || 969 ((softc->blk_mask == ~0) && 970 ((bp->bio_bcount % softc->min_blk) != 0))) { 971 xpt_print(periph->path, "Invalid request. Fixed block " 972 "device requests must be a multiple of %d bytes\n", 973 softc->min_blk); 974 cam_periph_unlock(periph); 975 biofinish(bp, NULL, EINVAL); 976 return; 977 } 978 } else if ((bp->bio_bcount > softc->max_blk) || 979 (bp->bio_bcount < softc->min_blk) || 980 (bp->bio_bcount & softc->blk_mask) != 0) { 981 982 xpt_print_path(periph->path); 983 printf("Invalid request. Variable block " 984 "device requests must be "); 985 if (softc->blk_mask != 0) { 986 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 987 } 988 printf("between %d and %d bytes\n", softc->min_blk, 989 softc->max_blk); 990 cam_periph_unlock(periph); 991 biofinish(bp, NULL, EINVAL); 992 return; 993 } 994 995 /* 996 * Place it at the end of the queue. 997 */ 998 bioq_insert_tail(&softc->bio_queue, bp); 999 softc->queue_count++; 1000 #if 0 1001 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1002 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 1003 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 1004 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1005 #endif 1006 if (softc->queue_count > 1) { 1007 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1008 ("sastrategy: queue count now %d\n", softc->queue_count)); 1009 } 1010 1011 /* 1012 * Schedule ourselves for performing the work. 1013 */ 1014 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1015 cam_periph_unlock(periph); 1016 1017 return; 1018 } 1019 1020 static int 1021 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1022 { 1023 uint32_t sili_blocksize; 1024 struct sa_softc *softc; 1025 int error; 1026 1027 error = 0; 1028 softc = (struct sa_softc *)periph->softc; 1029 1030 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1031 snprintf(ps->error_str, sizeof(ps->error_str), 1032 "sili is a signed parameter"); 1033 goto bailout; 1034 } 1035 if ((ps->value.value_signed < 0) 1036 || (ps->value.value_signed > 1)) { 1037 snprintf(ps->error_str, sizeof(ps->error_str), 1038 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1039 goto bailout_error; 1040 } 1041 /* 1042 * We only set the SILI flag in variable block 1043 * mode. You'll get a check condition in fixed 1044 * block mode if things don't line up in any case. 1045 */ 1046 if (softc->flags & SA_FLAG_FIXED) { 1047 snprintf(ps->error_str, sizeof(ps->error_str), 1048 "can't set sili bit in fixed block mode"); 1049 goto bailout_error; 1050 } 1051 if (softc->sili == ps->value.value_signed) 1052 goto bailout; 1053 1054 if (ps->value.value_signed == 1) 1055 sili_blocksize = 4; 1056 else 1057 sili_blocksize = 0; 1058 1059 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1060 sili_blocksize, 0, 0, SF_QUIET_IR); 1061 if (error != 0) { 1062 snprintf(ps->error_str, sizeof(ps->error_str), 1063 "sasetparams() returned error %d", error); 1064 goto bailout_error; 1065 } 1066 1067 softc->sili = ps->value.value_signed; 1068 1069 bailout: 1070 ps->status = MT_PARAM_STATUS_OK; 1071 return (error); 1072 1073 bailout_error: 1074 ps->status = MT_PARAM_STATUS_ERROR; 1075 if (error == 0) 1076 error = EINVAL; 1077 1078 return (error); 1079 } 1080 1081 static int 1082 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1083 { 1084 struct sa_softc *softc; 1085 int error; 1086 1087 error = 0; 1088 softc = (struct sa_softc *)periph->softc; 1089 1090 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1091 snprintf(ps->error_str, sizeof(ps->error_str), 1092 "eot_warn is a signed parameter"); 1093 ps->status = MT_PARAM_STATUS_ERROR; 1094 goto bailout; 1095 } 1096 if ((ps->value.value_signed < 0) 1097 || (ps->value.value_signed > 1)) { 1098 snprintf(ps->error_str, sizeof(ps->error_str), 1099 "invalid eot_warn value %jd\n", 1100 (intmax_t)ps->value.value_signed); 1101 ps->status = MT_PARAM_STATUS_ERROR; 1102 goto bailout; 1103 } 1104 softc->eot_warn = ps->value.value_signed; 1105 ps->status = MT_PARAM_STATUS_OK; 1106 bailout: 1107 if (ps->status != MT_PARAM_STATUS_OK) 1108 error = EINVAL; 1109 1110 return (error); 1111 } 1112 1113 1114 static void 1115 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1116 { 1117 int tmpint; 1118 1119 SASBADDNODE(sb, *indent, protection); 1120 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1121 tmpint = 1; 1122 else 1123 tmpint = 0; 1124 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1125 "Set to 1 if protection information is supported"); 1126 1127 if ((tmpint != 0) 1128 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1129 struct sa_prot_state *prot; 1130 1131 prot = &softc->prot_info.cur_prot_state; 1132 1133 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1134 prot_method, "Current Protection Method"); 1135 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1136 pi_length, "Length of Protection Information"); 1137 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1138 lbp_w, "Check Protection on Writes"); 1139 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1140 lbp_r, "Check and Include Protection on Reads"); 1141 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1142 rbdp, "Transfer Protection Information for RECOVER " 1143 "BUFFERED DATA command"); 1144 } 1145 SASBENDNODE(sb, *indent, protection); 1146 } 1147 1148 static void 1149 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1150 int table_ents) 1151 { 1152 int i; 1153 1154 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1155 sizeof(sa_prot_table))); 1156 1157 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1158 1159 for (i = 0; i < table_ents; i++) 1160 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1161 new_table[i].offset); 1162 1163 return; 1164 } 1165 1166 static struct sa_prot_map * 1167 safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1168 { 1169 char *prot_name = "protection."; 1170 int i, prot_len; 1171 1172 prot_len = strlen(prot_name); 1173 1174 /* 1175 * This shouldn't happen, but we check just in case. 1176 */ 1177 if (strncmp(name, prot_name, prot_len) != 0) 1178 goto bailout; 1179 1180 for (i = 0; i < table_ents; i++) { 1181 if (strcmp(&name[prot_len], table[i].name) != 0) 1182 continue; 1183 return (&table[i]); 1184 } 1185 bailout: 1186 return (NULL); 1187 } 1188 1189 static int 1190 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1191 { 1192 struct sa_softc *softc; 1193 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1194 struct sa_prot_state new_state; 1195 int error; 1196 int i; 1197 1198 softc = (struct sa_softc *)periph->softc; 1199 error = 0; 1200 1201 /* 1202 * Make sure that this tape drive supports protection information. 1203 * Otherwise we can't set anything. 1204 */ 1205 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1206 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1207 "Protection information is not supported for this device"); 1208 ps[0].status = MT_PARAM_STATUS_ERROR; 1209 goto bailout; 1210 } 1211 1212 /* 1213 * We can't operate with physio(9) splitting enabled, because there 1214 * is no way to insure (especially in variable block mode) that 1215 * what the user writes (with a checksum block at the end) will 1216 * make it into the sa(4) driver intact. 1217 */ 1218 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1219 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1220 "Protection information cannot be enabled with I/O " 1221 "splitting"); 1222 ps[0].status = MT_PARAM_STATUS_ERROR; 1223 goto bailout; 1224 } 1225 1226 /* 1227 * Take the current cached protection state and use that as the 1228 * basis for our new entries. 1229 */ 1230 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1231 1232 /* 1233 * Populate the table mapping property names to pointers into the 1234 * state structure. 1235 */ 1236 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1237 1238 /* 1239 * For each parameter the user passed in, make sure the name, type 1240 * and value are valid. 1241 */ 1242 for (i = 0; i < num_params; i++) { 1243 struct sa_prot_map *ent; 1244 1245 ent = safindprotent(ps[i].value_name, prot_ents, 1246 SA_NUM_PROT_ENTS); 1247 if (ent == NULL) { 1248 ps[i].status = MT_PARAM_STATUS_ERROR; 1249 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1250 "Invalid protection entry name %s", 1251 ps[i].value_name); 1252 error = EINVAL; 1253 goto bailout; 1254 } 1255 if (ent->param_type != ps[i].value_type) { 1256 ps[i].status = MT_PARAM_STATUS_ERROR; 1257 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1258 "Supplied type %d does not match actual type %d", 1259 ps[i].value_type, ent->param_type); 1260 error = EINVAL; 1261 goto bailout; 1262 } 1263 if ((ps[i].value.value_unsigned < ent->min_val) 1264 || (ps[i].value.value_unsigned > ent->max_val)) { 1265 ps[i].status = MT_PARAM_STATUS_ERROR; 1266 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1267 "Value %ju is outside valid range %u - %u", 1268 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1269 ent->max_val); 1270 error = EINVAL; 1271 goto bailout; 1272 } 1273 *(ent->value) = ps[i].value.value_unsigned; 1274 } 1275 1276 /* 1277 * Actually send the protection settings to the drive. 1278 */ 1279 error = sasetprot(periph, &new_state); 1280 if (error != 0) { 1281 for (i = 0; i < num_params; i++) { 1282 ps[i].status = MT_PARAM_STATUS_ERROR; 1283 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1284 "Unable to set parameter, see dmesg(8)"); 1285 } 1286 goto bailout; 1287 } 1288 1289 /* 1290 * Let the user know that his settings were stored successfully. 1291 */ 1292 for (i = 0; i < num_params; i++) 1293 ps[i].status = MT_PARAM_STATUS_OK; 1294 1295 bailout: 1296 return (error); 1297 } 1298 /* 1299 * Entry handlers generally only handle a single entry. Node handlers will 1300 * handle a contiguous range of parameters to set in a single call. 1301 */ 1302 typedef enum { 1303 SA_PARAM_TYPE_ENTRY, 1304 SA_PARAM_TYPE_NODE 1305 } sa_param_type; 1306 1307 struct sa_param_ent { 1308 char *name; 1309 sa_param_type param_type; 1310 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1311 int num_params); 1312 } sa_param_table[] = { 1313 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1314 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1315 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1316 }; 1317 1318 static struct sa_param_ent * 1319 safindparament(struct mtparamset *ps) 1320 { 1321 unsigned int i; 1322 1323 for (i = 0; i < sizeof(sa_param_table) /sizeof(sa_param_table[0]); i++){ 1324 /* 1325 * For entries, we compare all of the characters. For 1326 * nodes, we only compare the first N characters. The node 1327 * handler will decode the rest. 1328 */ 1329 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1330 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1331 continue; 1332 } else { 1333 if (strncmp(ps->value_name, sa_param_table[i].name, 1334 strlen(sa_param_table[i].name)) != 0) 1335 continue; 1336 } 1337 return (&sa_param_table[i]); 1338 } 1339 1340 return (NULL); 1341 } 1342 1343 /* 1344 * Go through a list of parameters, coalescing contiguous parameters with 1345 * the same parent node into a single call to a set_func. 1346 */ 1347 static int 1348 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1349 int need_copy) 1350 { 1351 int i, contig_ents; 1352 int error; 1353 struct mtparamset *params, *first; 1354 struct sa_param_ent *first_ent; 1355 1356 error = 0; 1357 params = NULL; 1358 1359 if (list->num_params == 0) 1360 /* Nothing to do */ 1361 goto bailout; 1362 1363 /* 1364 * Verify that the user has the correct structure size. 1365 */ 1366 if ((list->num_params * sizeof(struct mtparamset)) != 1367 list->param_len) { 1368 xpt_print(periph->path, "%s: length of params %d != " 1369 "sizeof(struct mtparamset) %zd * num_params %d\n", 1370 __func__, list->param_len, sizeof(struct mtparamset), 1371 list->num_params); 1372 error = EINVAL; 1373 goto bailout; 1374 } 1375 1376 if (need_copy != 0) { 1377 /* 1378 * XXX KDM will dropping the lock cause an issue here? 1379 */ 1380 cam_periph_unlock(periph); 1381 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1382 error = copyin(list->params, params, list->param_len); 1383 cam_periph_lock(periph); 1384 1385 if (error != 0) 1386 goto bailout; 1387 } else { 1388 params = list->params; 1389 } 1390 1391 contig_ents = 0; 1392 first = NULL; 1393 first_ent = NULL; 1394 for (i = 0; i < list->num_params; i++) { 1395 struct sa_param_ent *ent; 1396 1397 ent = safindparament(¶ms[i]); 1398 if (ent == NULL) { 1399 snprintf(params[i].error_str, 1400 sizeof(params[i].error_str), 1401 "%s: cannot find parameter %s", __func__, 1402 params[i].value_name); 1403 params[i].status = MT_PARAM_STATUS_ERROR; 1404 break; 1405 } 1406 1407 if (first != NULL) { 1408 if (first_ent == ent) { 1409 /* 1410 * We're still in a contiguous list of 1411 * parameters that can be handled by one 1412 * node handler. 1413 */ 1414 contig_ents++; 1415 continue; 1416 } else { 1417 error = first_ent->set_func(periph, first, 1418 contig_ents); 1419 first = NULL; 1420 first_ent = NULL; 1421 contig_ents = 0; 1422 if (error != 0) { 1423 error = 0; 1424 break; 1425 } 1426 } 1427 } 1428 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1429 first = ¶ms[i]; 1430 first_ent = ent; 1431 contig_ents = 1; 1432 } else { 1433 error = ent->set_func(periph, ¶ms[i], 1); 1434 if (error != 0) { 1435 error = 0; 1436 break; 1437 } 1438 } 1439 } 1440 if (first != NULL) 1441 first_ent->set_func(periph, first, contig_ents); 1442 1443 bailout: 1444 if (need_copy != 0) { 1445 if (error != EFAULT) { 1446 cam_periph_unlock(periph); 1447 copyout(params, list->params, list->param_len); 1448 cam_periph_lock(periph); 1449 } 1450 free(params, M_SCSISA); 1451 } 1452 return (error); 1453 } 1454 1455 static int 1456 sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1457 { 1458 struct sa_softc *softc; 1459 u_int8_t write_protect; 1460 int comp_enabled, comp_supported, error; 1461 1462 softc = (struct sa_softc *)periph->softc; 1463 1464 if (softc->open_pending_mount) 1465 return (0); 1466 1467 /* The control device may issue getparams() if there are no opens. */ 1468 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1469 return (0); 1470 1471 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1472 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1473 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1474 &softc->comp_algorithm, NULL, NULL, 0, 0); 1475 if (error) 1476 return (error); 1477 if (write_protect) 1478 softc->flags |= SA_FLAG_TAPE_WP; 1479 else 1480 softc->flags &= ~SA_FLAG_TAPE_WP; 1481 softc->flags &= ~SA_FLAG_COMPRESSION; 1482 if (comp_supported) { 1483 if (softc->saved_comp_algorithm == 0) 1484 softc->saved_comp_algorithm = 1485 softc->comp_algorithm; 1486 softc->flags |= SA_FLAG_COMP_SUPP; 1487 if (comp_enabled) 1488 softc->flags |= SA_FLAG_COMP_ENABLED; 1489 } else 1490 softc->flags |= SA_FLAG_COMP_UNSUPP; 1491 1492 return (0); 1493 } 1494 1495 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1496 if (softc->open_pending_mount) { \ 1497 error = samount(periph, 0, dev); \ 1498 if (error) { \ 1499 break; \ 1500 } \ 1501 saprevent(periph, PR_PREVENT); \ 1502 softc->open_pending_mount = 0; \ 1503 } 1504 1505 static int 1506 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1507 { 1508 struct cam_periph *periph; 1509 struct sa_softc *softc; 1510 scsi_space_code spaceop; 1511 int didlockperiph = 0; 1512 int mode; 1513 int error = 0; 1514 1515 mode = SAMODE(dev); 1516 error = 0; /* shut up gcc */ 1517 spaceop = 0; /* shut up gcc */ 1518 1519 periph = (struct cam_periph *)dev->si_drv1; 1520 if (periph == NULL) 1521 return (ENXIO); 1522 1523 cam_periph_lock(periph); 1524 softc = (struct sa_softc *)periph->softc; 1525 1526 /* 1527 * Check for control mode accesses. We allow MTIOCGET and 1528 * MTIOCERRSTAT (but need to be the only one open in order 1529 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1530 * and MTCOMP (but need to be the only one accessing this 1531 * device to run those). 1532 */ 1533 1534 if (SA_IS_CTRL(dev)) { 1535 switch (cmd) { 1536 case MTIOCGETEOTMODEL: 1537 case MTIOCGET: 1538 case MTIOCEXTGET: 1539 case MTIOCPARAMGET: 1540 case MTIOCRBLIM: 1541 break; 1542 case MTIOCERRSTAT: 1543 /* 1544 * If the periph isn't already locked, lock it 1545 * so our MTIOCERRSTAT can reset latched error stats. 1546 * 1547 * If the periph is already locked, skip it because 1548 * we're just getting status and it'll be up to the 1549 * other thread that has this device open to do 1550 * an MTIOCERRSTAT that would clear latched status. 1551 */ 1552 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1553 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1554 if (error != 0) { 1555 cam_periph_unlock(periph); 1556 return (error); 1557 } 1558 didlockperiph = 1; 1559 } 1560 break; 1561 1562 case MTIOCTOP: 1563 { 1564 struct mtop *mt = (struct mtop *) arg; 1565 1566 /* 1567 * Check to make sure it's an OP we can perform 1568 * with no media inserted. 1569 */ 1570 switch (mt->mt_op) { 1571 case MTSETBSIZ: 1572 case MTSETDNSTY: 1573 case MTCOMP: 1574 mt = NULL; 1575 /* FALLTHROUGH */ 1576 default: 1577 break; 1578 } 1579 if (mt != NULL) { 1580 break; 1581 } 1582 /* FALLTHROUGH */ 1583 } 1584 case MTIOCSETEOTMODEL: 1585 /* 1586 * We need to acquire the peripheral here rather 1587 * than at open time because we are sharing writable 1588 * access to data structures. 1589 */ 1590 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1591 if (error != 0) { 1592 cam_periph_unlock(periph); 1593 return (error); 1594 } 1595 didlockperiph = 1; 1596 break; 1597 1598 default: 1599 cam_periph_unlock(periph); 1600 return (EINVAL); 1601 } 1602 } 1603 1604 /* 1605 * Find the device that the user is talking about 1606 */ 1607 switch (cmd) { 1608 case MTIOCGET: 1609 { 1610 struct mtget *g = (struct mtget *)arg; 1611 1612 error = sagetparams_common(dev, periph); 1613 if (error) 1614 break; 1615 bzero(g, sizeof(struct mtget)); 1616 g->mt_type = MT_ISAR; 1617 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1618 g->mt_comp = MT_COMP_UNSUPP; 1619 g->mt_comp0 = MT_COMP_UNSUPP; 1620 g->mt_comp1 = MT_COMP_UNSUPP; 1621 g->mt_comp2 = MT_COMP_UNSUPP; 1622 g->mt_comp3 = MT_COMP_UNSUPP; 1623 } else { 1624 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1625 g->mt_comp = MT_COMP_DISABLED; 1626 } else { 1627 g->mt_comp = softc->comp_algorithm; 1628 } 1629 g->mt_comp0 = softc->comp_algorithm; 1630 g->mt_comp1 = softc->comp_algorithm; 1631 g->mt_comp2 = softc->comp_algorithm; 1632 g->mt_comp3 = softc->comp_algorithm; 1633 } 1634 g->mt_density = softc->media_density; 1635 g->mt_density0 = softc->media_density; 1636 g->mt_density1 = softc->media_density; 1637 g->mt_density2 = softc->media_density; 1638 g->mt_density3 = softc->media_density; 1639 g->mt_blksiz = softc->media_blksize; 1640 g->mt_blksiz0 = softc->media_blksize; 1641 g->mt_blksiz1 = softc->media_blksize; 1642 g->mt_blksiz2 = softc->media_blksize; 1643 g->mt_blksiz3 = softc->media_blksize; 1644 g->mt_fileno = softc->fileno; 1645 g->mt_blkno = softc->blkno; 1646 g->mt_dsreg = (short) softc->dsreg; 1647 /* 1648 * Yes, we know that this is likely to overflow 1649 */ 1650 if (softc->last_resid_was_io) { 1651 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1652 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1653 softc->last_io_resid = 0; 1654 } 1655 } 1656 } else { 1657 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1658 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1659 softc->last_ctl_resid = 0; 1660 } 1661 } 1662 } 1663 error = 0; 1664 break; 1665 } 1666 case MTIOCEXTGET: 1667 case MTIOCPARAMGET: 1668 { 1669 struct mtextget *g = (struct mtextget *)arg; 1670 char *tmpstr2; 1671 struct sbuf *sb; 1672 1673 /* 1674 * Report drive status using an XML format. 1675 */ 1676 1677 /* 1678 * XXX KDM will dropping the lock cause any problems here? 1679 */ 1680 cam_periph_unlock(periph); 1681 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1682 if (sb == NULL) { 1683 g->status = MT_EXT_GET_ERROR; 1684 snprintf(g->error_str, sizeof(g->error_str), 1685 "Unable to allocate %d bytes for status info", 1686 g->alloc_len); 1687 cam_periph_lock(periph); 1688 goto extget_bailout; 1689 } 1690 cam_periph_lock(periph); 1691 1692 if (cmd == MTIOCEXTGET) 1693 error = saextget(dev, periph, sb, g); 1694 else 1695 error = saparamget(softc, sb); 1696 1697 if (error != 0) 1698 goto extget_bailout; 1699 1700 error = sbuf_finish(sb); 1701 if (error == ENOMEM) { 1702 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1703 error = 0; 1704 } else if (error != 0) { 1705 g->status = MT_EXT_GET_ERROR; 1706 snprintf(g->error_str, sizeof(g->error_str), 1707 "Error %d returned from sbuf_finish()", error); 1708 } else 1709 g->status = MT_EXT_GET_OK; 1710 1711 error = 0; 1712 tmpstr2 = sbuf_data(sb); 1713 g->fill_len = strlen(tmpstr2) + 1; 1714 cam_periph_unlock(periph); 1715 1716 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1717 1718 cam_periph_lock(periph); 1719 1720 extget_bailout: 1721 sbuf_delete(sb); 1722 break; 1723 } 1724 case MTIOCPARAMSET: 1725 { 1726 struct mtsetlist list; 1727 struct mtparamset *ps = (struct mtparamset *)arg; 1728 1729 bzero(&list, sizeof(list)); 1730 list.num_params = 1; 1731 list.param_len = sizeof(*ps); 1732 list.params = ps; 1733 1734 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1735 break; 1736 } 1737 case MTIOCSETLIST: 1738 { 1739 struct mtsetlist *list = (struct mtsetlist *)arg; 1740 1741 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1742 break; 1743 } 1744 case MTIOCERRSTAT: 1745 { 1746 struct scsi_tape_errors *sep = 1747 &((union mterrstat *)arg)->scsi_errstat; 1748 1749 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1750 ("saioctl: MTIOCERRSTAT\n")); 1751 1752 bzero(sep, sizeof(*sep)); 1753 sep->io_resid = softc->last_io_resid; 1754 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1755 sizeof (sep->io_sense)); 1756 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1757 sizeof (sep->io_cdb)); 1758 sep->ctl_resid = softc->last_ctl_resid; 1759 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1760 sizeof (sep->ctl_sense)); 1761 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1762 sizeof (sep->ctl_cdb)); 1763 1764 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1765 didlockperiph) 1766 bzero((caddr_t) &softc->errinfo, 1767 sizeof (softc->errinfo)); 1768 error = 0; 1769 break; 1770 } 1771 case MTIOCTOP: 1772 { 1773 struct mtop *mt; 1774 int count; 1775 1776 PENDING_MOUNT_CHECK(softc, periph, dev); 1777 1778 mt = (struct mtop *)arg; 1779 1780 1781 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1782 ("saioctl: op=0x%x count=0x%x\n", 1783 mt->mt_op, mt->mt_count)); 1784 1785 count = mt->mt_count; 1786 switch (mt->mt_op) { 1787 case MTWEOF: /* write an end-of-file marker */ 1788 /* 1789 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1790 * flag because by keeping track of filemarks 1791 * we have last written we know whether or not 1792 * we need to write more when we close the device. 1793 */ 1794 error = sawritefilemarks(periph, count, FALSE, FALSE); 1795 break; 1796 case MTWEOFI: 1797 /* write an end-of-file marker without waiting */ 1798 error = sawritefilemarks(periph, count, FALSE, TRUE); 1799 break; 1800 case MTWSS: /* write a setmark */ 1801 error = sawritefilemarks(periph, count, TRUE, FALSE); 1802 break; 1803 case MTBSR: /* backward space record */ 1804 case MTFSR: /* forward space record */ 1805 case MTBSF: /* backward space file */ 1806 case MTFSF: /* forward space file */ 1807 case MTBSS: /* backward space setmark */ 1808 case MTFSS: /* forward space setmark */ 1809 case MTEOD: /* space to end of recorded medium */ 1810 { 1811 int nmarks; 1812 1813 spaceop = SS_FILEMARKS; 1814 nmarks = softc->filemarks; 1815 error = sacheckeod(periph); 1816 if (error) { 1817 xpt_print(periph->path, 1818 "EOD check prior to spacing failed\n"); 1819 softc->flags |= SA_FLAG_EIO_PENDING; 1820 break; 1821 } 1822 nmarks -= softc->filemarks; 1823 switch(mt->mt_op) { 1824 case MTBSR: 1825 count = -count; 1826 /* FALLTHROUGH */ 1827 case MTFSR: 1828 spaceop = SS_BLOCKS; 1829 break; 1830 case MTBSF: 1831 count = -count; 1832 /* FALLTHROUGH */ 1833 case MTFSF: 1834 break; 1835 case MTBSS: 1836 count = -count; 1837 /* FALLTHROUGH */ 1838 case MTFSS: 1839 spaceop = SS_SETMARKS; 1840 break; 1841 case MTEOD: 1842 spaceop = SS_EOD; 1843 count = 0; 1844 nmarks = 0; 1845 break; 1846 default: 1847 error = EINVAL; 1848 break; 1849 } 1850 if (error) 1851 break; 1852 1853 nmarks = softc->filemarks; 1854 /* 1855 * XXX: Why are we checking again? 1856 */ 1857 error = sacheckeod(periph); 1858 if (error) 1859 break; 1860 nmarks -= softc->filemarks; 1861 error = saspace(periph, count - nmarks, spaceop); 1862 /* 1863 * At this point, clear that we've written the tape 1864 * and that we've written any filemarks. We really 1865 * don't know what the applications wishes to do next- 1866 * the sacheckeod's will make sure we terminated the 1867 * tape correctly if we'd been writing, but the next 1868 * action the user application takes will set again 1869 * whether we need to write filemarks. 1870 */ 1871 softc->flags &= 1872 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1873 softc->filemarks = 0; 1874 break; 1875 } 1876 case MTREW: /* rewind */ 1877 PENDING_MOUNT_CHECK(softc, periph, dev); 1878 (void) sacheckeod(periph); 1879 error = sarewind(periph); 1880 /* see above */ 1881 softc->flags &= 1882 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1883 softc->flags &= ~SA_FLAG_ERR_PENDING; 1884 softc->filemarks = 0; 1885 break; 1886 case MTERASE: /* erase */ 1887 PENDING_MOUNT_CHECK(softc, periph, dev); 1888 error = saerase(periph, count); 1889 softc->flags &= 1890 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1891 softc->flags &= ~SA_FLAG_ERR_PENDING; 1892 break; 1893 case MTRETENS: /* re-tension tape */ 1894 PENDING_MOUNT_CHECK(softc, periph, dev); 1895 error = saretension(periph); 1896 softc->flags &= 1897 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1898 softc->flags &= ~SA_FLAG_ERR_PENDING; 1899 break; 1900 case MTOFFL: /* rewind and put the drive offline */ 1901 1902 PENDING_MOUNT_CHECK(softc, periph, dev); 1903 1904 (void) sacheckeod(periph); 1905 /* see above */ 1906 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1907 softc->filemarks = 0; 1908 1909 error = sarewind(periph); 1910 /* clear the frozen flag anyway */ 1911 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1912 1913 /* 1914 * Be sure to allow media removal before ejecting. 1915 */ 1916 1917 saprevent(periph, PR_ALLOW); 1918 if (error == 0) { 1919 error = saloadunload(periph, FALSE); 1920 if (error == 0) { 1921 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1922 } 1923 } 1924 break; 1925 1926 case MTLOAD: 1927 error = saloadunload(periph, TRUE); 1928 break; 1929 case MTNOP: /* no operation, sets status only */ 1930 case MTCACHE: /* enable controller cache */ 1931 case MTNOCACHE: /* disable controller cache */ 1932 error = 0; 1933 break; 1934 1935 case MTSETBSIZ: /* Set block size for device */ 1936 1937 PENDING_MOUNT_CHECK(softc, periph, dev); 1938 1939 if ((softc->sili != 0) 1940 && (count != 0)) { 1941 xpt_print(periph->path, "Can't enter fixed " 1942 "block mode with SILI enabled\n"); 1943 error = EINVAL; 1944 break; 1945 } 1946 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1947 0, 0, 0); 1948 if (error == 0) { 1949 softc->last_media_blksize = 1950 softc->media_blksize; 1951 softc->media_blksize = count; 1952 if (count) { 1953 softc->flags |= SA_FLAG_FIXED; 1954 if (powerof2(count)) { 1955 softc->blk_shift = 1956 ffs(count) - 1; 1957 softc->blk_mask = count - 1; 1958 } else { 1959 softc->blk_mask = ~0; 1960 softc->blk_shift = 0; 1961 } 1962 /* 1963 * Make the user's desire 'persistent'. 1964 */ 1965 softc->quirks &= ~SA_QUIRK_VARIABLE; 1966 softc->quirks |= SA_QUIRK_FIXED; 1967 } else { 1968 softc->flags &= ~SA_FLAG_FIXED; 1969 if (softc->max_blk == 0) { 1970 softc->max_blk = ~0; 1971 } 1972 softc->blk_shift = 0; 1973 if (softc->blk_gran != 0) { 1974 softc->blk_mask = 1975 softc->blk_gran - 1; 1976 } else { 1977 softc->blk_mask = 0; 1978 } 1979 /* 1980 * Make the user's desire 'persistent'. 1981 */ 1982 softc->quirks |= SA_QUIRK_VARIABLE; 1983 softc->quirks &= ~SA_QUIRK_FIXED; 1984 } 1985 } 1986 break; 1987 case MTSETDNSTY: /* Set density for device and mode */ 1988 PENDING_MOUNT_CHECK(softc, periph, dev); 1989 1990 if (count > UCHAR_MAX) { 1991 error = EINVAL; 1992 break; 1993 } else { 1994 error = sasetparams(periph, SA_PARAM_DENSITY, 1995 0, count, 0, 0); 1996 } 1997 break; 1998 case MTCOMP: /* enable compression */ 1999 PENDING_MOUNT_CHECK(softc, periph, dev); 2000 /* 2001 * Some devices don't support compression, and 2002 * don't like it if you ask them for the 2003 * compression page. 2004 */ 2005 if ((softc->quirks & SA_QUIRK_NOCOMP) || 2006 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 2007 error = ENODEV; 2008 break; 2009 } 2010 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2011 0, 0, count, SF_NO_PRINT); 2012 break; 2013 default: 2014 error = EINVAL; 2015 } 2016 break; 2017 } 2018 case MTIOCIEOT: 2019 case MTIOCEEOT: 2020 error = 0; 2021 break; 2022 case MTIOCRDSPOS: 2023 PENDING_MOUNT_CHECK(softc, periph, dev); 2024 error = sardpos(periph, 0, (u_int32_t *) arg); 2025 break; 2026 case MTIOCRDHPOS: 2027 PENDING_MOUNT_CHECK(softc, periph, dev); 2028 error = sardpos(periph, 1, (u_int32_t *) arg); 2029 break; 2030 case MTIOCSLOCATE: 2031 case MTIOCHLOCATE: { 2032 struct mtlocate locate_info; 2033 int hard; 2034 2035 bzero(&locate_info, sizeof(locate_info)); 2036 locate_info.logical_id = *((uint32_t *)arg); 2037 if (cmd == MTIOCSLOCATE) 2038 hard = 0; 2039 else 2040 hard = 1; 2041 2042 PENDING_MOUNT_CHECK(softc, periph, dev); 2043 2044 error = sasetpos(periph, hard, &locate_info); 2045 break; 2046 } 2047 case MTIOCEXTLOCATE: 2048 PENDING_MOUNT_CHECK(softc, periph, dev); 2049 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2050 softc->flags &= 2051 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2052 softc->flags &= ~SA_FLAG_ERR_PENDING; 2053 softc->filemarks = 0; 2054 break; 2055 case MTIOCGETEOTMODEL: 2056 error = 0; 2057 if (softc->quirks & SA_QUIRK_1FM) 2058 mode = 1; 2059 else 2060 mode = 2; 2061 *((u_int32_t *) arg) = mode; 2062 break; 2063 case MTIOCSETEOTMODEL: 2064 error = 0; 2065 switch (*((u_int32_t *) arg)) { 2066 case 1: 2067 softc->quirks &= ~SA_QUIRK_2FM; 2068 softc->quirks |= SA_QUIRK_1FM; 2069 break; 2070 case 2: 2071 softc->quirks &= ~SA_QUIRK_1FM; 2072 softc->quirks |= SA_QUIRK_2FM; 2073 break; 2074 default: 2075 error = EINVAL; 2076 break; 2077 } 2078 break; 2079 case MTIOCRBLIM: { 2080 struct mtrblim *rblim; 2081 2082 rblim = (struct mtrblim *)arg; 2083 2084 rblim->granularity = softc->blk_gran; 2085 rblim->min_block_length = softc->min_blk; 2086 rblim->max_block_length = softc->max_blk; 2087 break; 2088 } 2089 default: 2090 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2091 break; 2092 } 2093 2094 /* 2095 * Check to see if we cleared a frozen state 2096 */ 2097 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2098 switch(cmd) { 2099 case MTIOCRDSPOS: 2100 case MTIOCRDHPOS: 2101 case MTIOCSLOCATE: 2102 case MTIOCHLOCATE: 2103 /* 2104 * XXX KDM look at this. 2105 */ 2106 softc->fileno = (daddr_t) -1; 2107 softc->blkno = (daddr_t) -1; 2108 softc->rep_blkno = (daddr_t) -1; 2109 softc->rep_fileno = (daddr_t) -1; 2110 softc->partition = (daddr_t) -1; 2111 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2112 xpt_print(periph->path, 2113 "tape state now unfrozen.\n"); 2114 break; 2115 default: 2116 break; 2117 } 2118 } 2119 if (didlockperiph) { 2120 cam_periph_unhold(periph); 2121 } 2122 cam_periph_unlock(periph); 2123 return (error); 2124 } 2125 2126 static void 2127 sainit(void) 2128 { 2129 cam_status status; 2130 2131 /* 2132 * Install a global async callback. 2133 */ 2134 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2135 2136 if (status != CAM_REQ_CMP) { 2137 printf("sa: Failed to attach master async callback " 2138 "due to status 0x%x!\n", status); 2139 } 2140 } 2141 2142 static void 2143 sadevgonecb(void *arg) 2144 { 2145 struct cam_periph *periph; 2146 struct mtx *mtx; 2147 struct sa_softc *softc; 2148 2149 periph = (struct cam_periph *)arg; 2150 softc = (struct sa_softc *)periph->softc; 2151 2152 mtx = cam_periph_mtx(periph); 2153 mtx_lock(mtx); 2154 2155 softc->num_devs_to_destroy--; 2156 if (softc->num_devs_to_destroy == 0) { 2157 int i; 2158 2159 /* 2160 * When we have gotten all of our callbacks, we will get 2161 * no more close calls from devfs. So if we have any 2162 * dangling opens, we need to release the reference held 2163 * for that particular context. 2164 */ 2165 for (i = 0; i < softc->open_count; i++) 2166 cam_periph_release_locked(periph); 2167 2168 softc->open_count = 0; 2169 2170 /* 2171 * Release the reference held for devfs, all of our 2172 * instances are gone now. 2173 */ 2174 cam_periph_release_locked(periph); 2175 } 2176 2177 /* 2178 * We reference the lock directly here, instead of using 2179 * cam_periph_unlock(). The reason is that the final call to 2180 * cam_periph_release_locked() above could result in the periph 2181 * getting freed. If that is the case, dereferencing the periph 2182 * with a cam_periph_unlock() call would cause a page fault. 2183 */ 2184 mtx_unlock(mtx); 2185 } 2186 2187 static void 2188 saoninvalidate(struct cam_periph *periph) 2189 { 2190 struct sa_softc *softc; 2191 2192 softc = (struct sa_softc *)periph->softc; 2193 2194 /* 2195 * De-register any async callbacks. 2196 */ 2197 xpt_register_async(0, saasync, periph, periph->path); 2198 2199 softc->flags |= SA_FLAG_INVALID; 2200 2201 /* 2202 * Return all queued I/O with ENXIO. 2203 * XXX Handle any transactions queued to the card 2204 * with XPT_ABORT_CCB. 2205 */ 2206 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2207 softc->queue_count = 0; 2208 2209 /* 2210 * Tell devfs that all of our devices have gone away, and ask for a 2211 * callback when it has cleaned up its state. 2212 */ 2213 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2214 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2215 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2216 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2217 } 2218 2219 static void 2220 sacleanup(struct cam_periph *periph) 2221 { 2222 struct sa_softc *softc; 2223 2224 softc = (struct sa_softc *)periph->softc; 2225 2226 cam_periph_unlock(periph); 2227 2228 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2229 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2230 xpt_print(periph->path, "can't remove sysctl context\n"); 2231 2232 cam_periph_lock(periph); 2233 2234 devstat_remove_entry(softc->device_stats); 2235 2236 free(softc, M_SCSISA); 2237 } 2238 2239 static void 2240 saasync(void *callback_arg, u_int32_t code, 2241 struct cam_path *path, void *arg) 2242 { 2243 struct cam_periph *periph; 2244 2245 periph = (struct cam_periph *)callback_arg; 2246 switch (code) { 2247 case AC_FOUND_DEVICE: 2248 { 2249 struct ccb_getdev *cgd; 2250 cam_status status; 2251 2252 cgd = (struct ccb_getdev *)arg; 2253 if (cgd == NULL) 2254 break; 2255 2256 if (cgd->protocol != PROTO_SCSI) 2257 break; 2258 2259 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2260 break; 2261 2262 /* 2263 * Allocate a peripheral instance for 2264 * this device and start the probe 2265 * process. 2266 */ 2267 status = cam_periph_alloc(saregister, saoninvalidate, 2268 sacleanup, sastart, 2269 "sa", CAM_PERIPH_BIO, path, 2270 saasync, AC_FOUND_DEVICE, cgd); 2271 2272 if (status != CAM_REQ_CMP 2273 && status != CAM_REQ_INPROG) 2274 printf("saasync: Unable to probe new device " 2275 "due to status 0x%x\n", status); 2276 break; 2277 } 2278 default: 2279 cam_periph_async(periph, code, path, arg); 2280 break; 2281 } 2282 } 2283 2284 static void 2285 sasetupdev(struct sa_softc *softc, struct cdev *dev) 2286 { 2287 dev->si_drv1 = softc->periph; 2288 dev->si_iosize_max = softc->maxio; 2289 dev->si_flags |= softc->si_flags; 2290 /* 2291 * Keep a count of how many non-alias devices we have created, 2292 * so we can make sure we clean them all up on shutdown. Aliases 2293 * are cleaned up when we destroy the device they're an alias for. 2294 */ 2295 if ((dev->si_flags & SI_ALIAS) == 0) 2296 softc->num_devs_to_destroy++; 2297 } 2298 2299 static void 2300 sasysctlinit(void *context, int pending) 2301 { 2302 struct cam_periph *periph; 2303 struct sa_softc *softc; 2304 char tmpstr[80], tmpstr2[80]; 2305 2306 periph = (struct cam_periph *)context; 2307 /* 2308 * If the periph is invalid, no need to setup the sysctls. 2309 */ 2310 if (periph->flags & CAM_PERIPH_INVALID) 2311 goto bailout; 2312 2313 softc = (struct sa_softc *)periph->softc; 2314 2315 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2316 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2317 2318 sysctl_ctx_init(&softc->sysctl_ctx); 2319 softc->flags |= SA_FLAG_SCTX_INIT; 2320 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 2321 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2322 CTLFLAG_RD, 0, tmpstr); 2323 if (softc->sysctl_tree == NULL) 2324 goto bailout; 2325 2326 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2327 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2328 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2329 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2330 OID_AUTO, "maxio", CTLFLAG_RD, 2331 &softc->maxio, 0, "Maximum I/O size"); 2332 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2333 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2334 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2335 2336 bailout: 2337 /* 2338 * Release the reference that was held when this task was enqueued. 2339 */ 2340 cam_periph_release(periph); 2341 } 2342 2343 static cam_status 2344 saregister(struct cam_periph *periph, void *arg) 2345 { 2346 struct sa_softc *softc; 2347 struct ccb_getdev *cgd; 2348 struct ccb_pathinq cpi; 2349 caddr_t match; 2350 char tmpstr[80]; 2351 2352 cgd = (struct ccb_getdev *)arg; 2353 if (cgd == NULL) { 2354 printf("saregister: no getdev CCB, can't register device\n"); 2355 return (CAM_REQ_CMP_ERR); 2356 } 2357 2358 softc = (struct sa_softc *) 2359 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2360 if (softc == NULL) { 2361 printf("saregister: Unable to probe new device. " 2362 "Unable to allocate softc\n"); 2363 return (CAM_REQ_CMP_ERR); 2364 } 2365 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2366 softc->state = SA_STATE_NORMAL; 2367 softc->fileno = (daddr_t) -1; 2368 softc->blkno = (daddr_t) -1; 2369 softc->rep_fileno = (daddr_t) -1; 2370 softc->rep_blkno = (daddr_t) -1; 2371 softc->partition = (daddr_t) -1; 2372 softc->bop = -1; 2373 softc->eop = -1; 2374 softc->bpew = -1; 2375 2376 bioq_init(&softc->bio_queue); 2377 softc->periph = periph; 2378 periph->softc = softc; 2379 2380 /* 2381 * See if this device has any quirks. 2382 */ 2383 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2384 (caddr_t)sa_quirk_table, 2385 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 2386 sizeof(*sa_quirk_table), scsi_inquiry_match); 2387 2388 if (match != NULL) { 2389 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2390 softc->last_media_blksize = 2391 ((struct sa_quirk_entry *)match)->prefblk; 2392 } else 2393 softc->quirks = SA_QUIRK_NONE; 2394 2395 /* 2396 * Long format data for READ POSITION was introduced in SSC, which 2397 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2398 * reports that it is SCSI-2 or older, it is unlikely to support 2399 * long position data, but it might. Some drives from that era 2400 * claim to be SCSI-2, but do support long position information. 2401 * So, instead of immediately disabling long position information 2402 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2403 * then disable long position information if we get an error. 2404 */ 2405 if (cgd->inq_data.version <= SCSI_REV_CCS) 2406 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2407 2408 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2409 struct ccb_dev_advinfo cdai; 2410 struct scsi_vpd_extended_inquiry_data ext_inq; 2411 2412 bzero(&ext_inq, sizeof(ext_inq)); 2413 2414 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2415 2416 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2417 cdai.flags = CDAI_FLAG_NONE; 2418 cdai.buftype = CDAI_TYPE_EXT_INQ; 2419 cdai.bufsiz = sizeof(ext_inq); 2420 cdai.buf = (uint8_t *)&ext_inq; 2421 xpt_action((union ccb *)&cdai); 2422 2423 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2424 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2425 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2426 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2427 softc->flags |= SA_FLAG_PROTECT_SUPP; 2428 } 2429 2430 bzero(&cpi, sizeof(cpi)); 2431 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2432 cpi.ccb_h.func_code = XPT_PATH_INQ; 2433 xpt_action((union ccb *)&cpi); 2434 2435 /* 2436 * The SA driver supports a blocksize, but we don't know the 2437 * blocksize until we media is inserted. So, set a flag to 2438 * indicate that the blocksize is unavailable right now. 2439 */ 2440 cam_periph_unlock(periph); 2441 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2442 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2443 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2444 2445 /* 2446 * Load the default value that is either compiled in, or loaded 2447 * in the global kern.cam.sa.allow_io_split tunable. 2448 */ 2449 softc->allow_io_split = sa_allow_io_split; 2450 2451 /* 2452 * Load a per-instance tunable, if it exists. NOTE that this 2453 * tunable WILL GO AWAY in FreeBSD 11.0. 2454 */ 2455 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2456 periph->unit_number); 2457 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2458 2459 /* 2460 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2461 * the smaller of cpi.maxio or MAXPHYS. 2462 */ 2463 if (cpi.maxio == 0) 2464 softc->maxio = DFLTPHYS; 2465 else if (cpi.maxio > MAXPHYS) 2466 softc->maxio = MAXPHYS; 2467 else 2468 softc->maxio = cpi.maxio; 2469 2470 /* 2471 * Record the controller's maximum I/O size so we can report it to 2472 * the user later. 2473 */ 2474 softc->cpi_maxio = cpi.maxio; 2475 2476 /* 2477 * By default we tell physio that we do not want our I/O split. 2478 * The user needs to have a 1:1 mapping between the size of his 2479 * write to a tape character device and the size of the write 2480 * that actually goes down to the drive. 2481 */ 2482 if (softc->allow_io_split == 0) 2483 softc->si_flags = SI_NOSPLIT; 2484 else 2485 softc->si_flags = 0; 2486 2487 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2488 2489 /* 2490 * If the SIM supports unmapped I/O, let physio know that we can 2491 * handle unmapped buffers. 2492 */ 2493 if (cpi.hba_misc & PIM_UNMAPPED) 2494 softc->si_flags |= SI_UNMAPPED; 2495 2496 /* 2497 * Acquire a reference to the periph before we create the devfs 2498 * instances for it. We'll release this reference once the devfs 2499 * instances have been freed. 2500 */ 2501 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 2502 xpt_print(periph->path, "%s: lost periph during " 2503 "registration!\n", __func__); 2504 cam_periph_lock(periph); 2505 return (CAM_REQ_CMP_ERR); 2506 } 2507 2508 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 2509 SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 2510 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 2511 sasetupdev(softc, softc->devs.ctl_dev); 2512 2513 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2514 SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 2515 0660, "%s%d", periph->periph_name, periph->unit_number); 2516 sasetupdev(softc, softc->devs.r_dev); 2517 2518 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2519 SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 2520 0660, "n%s%d", periph->periph_name, periph->unit_number); 2521 sasetupdev(softc, softc->devs.nr_dev); 2522 2523 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2524 SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 2525 0660, "e%s%d", periph->periph_name, periph->unit_number); 2526 sasetupdev(softc, softc->devs.er_dev); 2527 2528 cam_periph_lock(periph); 2529 2530 softc->density_type_bits[0] = 0; 2531 softc->density_type_bits[1] = SRDS_MEDIA; 2532 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2533 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2534 /* 2535 * Bump the peripheral refcount for the sysctl thread, in case we 2536 * get invalidated before the thread has a chance to run. 2537 */ 2538 cam_periph_acquire(periph); 2539 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2540 2541 /* 2542 * Add an async callback so that we get 2543 * notified if this device goes away. 2544 */ 2545 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2546 2547 xpt_announce_periph(periph, NULL); 2548 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2549 2550 return (CAM_REQ_CMP); 2551 } 2552 2553 static void 2554 sastart(struct cam_periph *periph, union ccb *start_ccb) 2555 { 2556 struct sa_softc *softc; 2557 2558 softc = (struct sa_softc *)periph->softc; 2559 2560 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2561 2562 2563 switch (softc->state) { 2564 case SA_STATE_NORMAL: 2565 { 2566 /* Pull a buffer from the queue and get going on it */ 2567 struct bio *bp; 2568 2569 /* 2570 * See if there is a buf with work for us to do.. 2571 */ 2572 bp = bioq_first(&softc->bio_queue); 2573 if (bp == NULL) { 2574 xpt_release_ccb(start_ccb); 2575 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 2576 struct bio *done_bp; 2577 again: 2578 softc->queue_count--; 2579 bioq_remove(&softc->bio_queue, bp); 2580 bp->bio_resid = bp->bio_bcount; 2581 done_bp = bp; 2582 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2583 /* 2584 * We have two different behaviors for 2585 * writes when we hit either Early Warning 2586 * or the PEWZ (Programmable Early Warning 2587 * Zone). The default behavior is that 2588 * for all writes that are currently 2589 * queued after the write where we saw the 2590 * early warning, we will return the write 2591 * with the residual equal to the count. 2592 * i.e. tell the application that 0 bytes 2593 * were written. 2594 * 2595 * The alternate behavior, which is enabled 2596 * when eot_warn is set, is that in 2597 * addition to setting the residual equal 2598 * to the count, we will set the error 2599 * to ENOSPC. 2600 * 2601 * In either case, once queued writes are 2602 * cleared out, we clear the error flag 2603 * (see below) and the application is free to 2604 * attempt to write more. 2605 */ 2606 if (softc->eot_warn != 0) { 2607 bp->bio_flags |= BIO_ERROR; 2608 bp->bio_error = ENOSPC; 2609 } else 2610 bp->bio_error = 0; 2611 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2612 /* 2613 * This can only happen if we're reading 2614 * in fixed length mode. In this case, 2615 * we dump the rest of the list the 2616 * same way. 2617 */ 2618 bp->bio_error = 0; 2619 if (bioq_first(&softc->bio_queue) != NULL) { 2620 biodone(done_bp); 2621 goto again; 2622 } 2623 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2624 bp->bio_error = EIO; 2625 bp->bio_flags |= BIO_ERROR; 2626 } 2627 bp = bioq_first(&softc->bio_queue); 2628 /* 2629 * Only if we have no other buffers queued up 2630 * do we clear the pending error flag. 2631 */ 2632 if (bp == NULL) 2633 softc->flags &= ~SA_FLAG_ERR_PENDING; 2634 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2635 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2636 "%d more buffers queued up\n", 2637 (softc->flags & SA_FLAG_ERR_PENDING), 2638 (bp != NULL)? "not " : " ", softc->queue_count)); 2639 xpt_release_ccb(start_ccb); 2640 biodone(done_bp); 2641 } else { 2642 u_int32_t length; 2643 2644 bioq_remove(&softc->bio_queue, bp); 2645 softc->queue_count--; 2646 2647 length = bp->bio_bcount; 2648 2649 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2650 if (softc->blk_shift != 0) { 2651 length = length >> softc->blk_shift; 2652 } else if (softc->media_blksize != 0) { 2653 length = length / softc->media_blksize; 2654 } else { 2655 bp->bio_error = EIO; 2656 xpt_print(periph->path, "zero blocksize" 2657 " for FIXED length writes?\n"); 2658 biodone(bp); 2659 break; 2660 } 2661 #if 0 2662 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2663 ("issuing a %d fixed record %s\n", 2664 length, (bp->bio_cmd == BIO_READ)? "read" : 2665 "write")); 2666 #endif 2667 } else { 2668 #if 0 2669 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2670 ("issuing a %d variable byte %s\n", 2671 length, (bp->bio_cmd == BIO_READ)? "read" : 2672 "write")); 2673 #endif 2674 } 2675 devstat_start_transaction_bio(softc->device_stats, bp); 2676 /* 2677 * Some people have theorized that we should 2678 * suppress illegal length indication if we are 2679 * running in variable block mode so that we don't 2680 * have to request sense every time our requested 2681 * block size is larger than the written block. 2682 * The residual information from the ccb allows 2683 * us to identify this situation anyway. The only 2684 * problem with this is that we will not get 2685 * information about blocks that are larger than 2686 * our read buffer unless we set the block size 2687 * in the mode page to something other than 0. 2688 * 2689 * I believe that this is a non-issue. If user apps 2690 * don't adjust their read size to match our record 2691 * size, that's just life. Anyway, the typical usage 2692 * would be to issue, e.g., 64KB reads and occasionally 2693 * have to do deal with 512 byte or 1KB intermediate 2694 * records. 2695 * 2696 * That said, though, we now support setting the 2697 * SILI bit on reads, and we set the blocksize to 4 2698 * bytes when we do that. This gives us 2699 * compatibility with software that wants this, 2700 * although the only real difference between that 2701 * and not setting the SILI bit on reads is that we 2702 * won't get a check condition on reads where our 2703 * request size is larger than the block on tape. 2704 * That probably only makes a real difference in 2705 * non-packetized SCSI, where you have to go back 2706 * to the drive to request sense and thus incur 2707 * more latency. 2708 */ 2709 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2710 MTIO_DSREG_RD : MTIO_DSREG_WR; 2711 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2712 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2713 SCSI_RW_READ : SCSI_RW_WRITE) | 2714 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2715 SCSI_RW_BIO : 0), softc->sili, 2716 (softc->flags & SA_FLAG_FIXED) != 0, length, 2717 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2718 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2719 IO_TIMEOUT); 2720 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2721 start_ccb->ccb_h.ccb_bp = bp; 2722 bp = bioq_first(&softc->bio_queue); 2723 xpt_action(start_ccb); 2724 } 2725 2726 if (bp != NULL) { 2727 /* Have more work to do, so ensure we stay scheduled */ 2728 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2729 } 2730 break; 2731 } 2732 case SA_STATE_ABNORMAL: 2733 default: 2734 panic("state 0x%x in sastart", softc->state); 2735 break; 2736 } 2737 } 2738 2739 2740 static void 2741 sadone(struct cam_periph *periph, union ccb *done_ccb) 2742 { 2743 struct sa_softc *softc; 2744 struct ccb_scsiio *csio; 2745 struct bio *bp; 2746 int error; 2747 2748 softc = (struct sa_softc *)periph->softc; 2749 csio = &done_ccb->csio; 2750 2751 softc->dsreg = MTIO_DSREG_REST; 2752 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2753 error = 0; 2754 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2755 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2756 /* 2757 * A retry was scheduled, so just return. 2758 */ 2759 return; 2760 } 2761 } 2762 2763 if (error == EIO) { 2764 2765 /* 2766 * Catastrophic error. Mark the tape as frozen 2767 * (we no longer know tape position). 2768 * 2769 * Return all queued I/O with EIO, and unfreeze 2770 * our queue so that future transactions that 2771 * attempt to fix this problem can get to the 2772 * device. 2773 * 2774 */ 2775 2776 softc->flags |= SA_FLAG_TAPE_FROZEN; 2777 bioq_flush(&softc->bio_queue, NULL, EIO); 2778 } 2779 if (error != 0) { 2780 bp->bio_resid = bp->bio_bcount; 2781 bp->bio_error = error; 2782 bp->bio_flags |= BIO_ERROR; 2783 /* 2784 * In the error case, position is updated in saerror. 2785 */ 2786 } else { 2787 bp->bio_resid = csio->resid; 2788 bp->bio_error = 0; 2789 if (csio->resid != 0) { 2790 bp->bio_flags |= BIO_ERROR; 2791 } 2792 if (bp->bio_cmd == BIO_WRITE) { 2793 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2794 softc->filemarks = 0; 2795 } 2796 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2797 (softc->blkno != (daddr_t) -1)) { 2798 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2799 u_int32_t l; 2800 if (softc->blk_shift != 0) { 2801 l = bp->bio_bcount >> 2802 softc->blk_shift; 2803 } else { 2804 l = bp->bio_bcount / 2805 softc->media_blksize; 2806 } 2807 softc->blkno += (daddr_t) l; 2808 } else { 2809 softc->blkno++; 2810 } 2811 } 2812 } 2813 /* 2814 * If we had an error (immediate or pending), 2815 * release the device queue now. 2816 */ 2817 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2818 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2819 if (error || bp->bio_resid) { 2820 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2821 ("error %d resid %ld count %ld\n", error, 2822 bp->bio_resid, bp->bio_bcount)); 2823 } 2824 biofinish(bp, softc->device_stats, 0); 2825 xpt_release_ccb(done_ccb); 2826 } 2827 2828 /* 2829 * Mount the tape (make sure it's ready for I/O). 2830 */ 2831 static int 2832 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2833 { 2834 struct sa_softc *softc; 2835 union ccb *ccb; 2836 int error; 2837 2838 /* 2839 * oflags can be checked for 'kind' of open (read-only check) - later 2840 * dev can be checked for a control-mode or compression open - later 2841 */ 2842 UNUSED_PARAMETER(oflags); 2843 UNUSED_PARAMETER(dev); 2844 2845 2846 softc = (struct sa_softc *)periph->softc; 2847 2848 /* 2849 * This should determine if something has happend since the last 2850 * open/mount that would invalidate the mount. We do *not* want 2851 * to retry this command- we just want the status. But we only 2852 * do this if we're mounted already- if we're not mounted, 2853 * we don't care about the unit read state and can instead use 2854 * this opportunity to attempt to reserve the tape unit. 2855 */ 2856 2857 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2858 ccb = cam_periph_getccb(periph, 1); 2859 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2860 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2861 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2862 softc->device_stats); 2863 if (error == ENXIO) { 2864 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2865 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2866 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2867 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2868 softc->device_stats); 2869 } else if (error) { 2870 /* 2871 * We don't need to freeze the tape because we 2872 * will now attempt to rewind/load it. 2873 */ 2874 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2875 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2876 xpt_print(periph->path, 2877 "error %d on TUR in samount\n", error); 2878 } 2879 } 2880 } else { 2881 error = sareservereleaseunit(periph, TRUE); 2882 if (error) { 2883 return (error); 2884 } 2885 ccb = cam_periph_getccb(periph, 1); 2886 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2887 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2888 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2889 softc->device_stats); 2890 } 2891 2892 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2893 struct scsi_read_block_limits_data *rblim = NULL; 2894 int comp_enabled, comp_supported; 2895 u_int8_t write_protect, guessing = 0; 2896 2897 /* 2898 * Clear out old state. 2899 */ 2900 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2901 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2902 softc->filemarks = 0; 2903 2904 /* 2905 * *Very* first off, make sure we're loaded to BOT. 2906 */ 2907 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2908 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2909 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2910 softc->device_stats); 2911 2912 /* 2913 * In case this doesn't work, do a REWIND instead 2914 */ 2915 if (error) { 2916 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2917 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2918 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2919 softc->device_stats); 2920 } 2921 if (error) { 2922 xpt_release_ccb(ccb); 2923 goto exit; 2924 } 2925 2926 /* 2927 * Do a dummy test read to force access to the 2928 * media so that the drive will really know what's 2929 * there. We actually don't really care what the 2930 * blocksize on tape is and don't expect to really 2931 * read a full record. 2932 */ 2933 rblim = (struct scsi_read_block_limits_data *) 2934 malloc(8192, M_SCSISA, M_NOWAIT); 2935 if (rblim == NULL) { 2936 xpt_print(periph->path, "no memory for test read\n"); 2937 xpt_release_ccb(ccb); 2938 error = ENOMEM; 2939 goto exit; 2940 } 2941 2942 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2943 scsi_sa_read_write(&ccb->csio, 0, sadone, 2944 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2945 (void *) rblim, 8192, SSD_FULL_SIZE, 2946 IO_TIMEOUT); 2947 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2948 softc->device_stats); 2949 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2950 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2951 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2952 SF_NO_PRINT | SF_RETRY_UA, 2953 softc->device_stats); 2954 if (error) { 2955 xpt_print(periph->path, 2956 "unable to rewind after test read\n"); 2957 xpt_release_ccb(ccb); 2958 goto exit; 2959 } 2960 } 2961 2962 /* 2963 * Next off, determine block limits. 2964 */ 2965 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2966 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2967 2968 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2969 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2970 2971 xpt_release_ccb(ccb); 2972 2973 if (error != 0) { 2974 /* 2975 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2976 * a MANDATORY command. Anyway- it doesn't matter- 2977 * we can proceed anyway. 2978 */ 2979 softc->blk_gran = 0; 2980 softc->max_blk = ~0; 2981 softc->min_blk = 0; 2982 } else { 2983 if (softc->scsi_rev >= SCSI_REV_SPC) { 2984 softc->blk_gran = RBL_GRAN(rblim); 2985 } else { 2986 softc->blk_gran = 0; 2987 } 2988 /* 2989 * We take max_blk == min_blk to mean a default to 2990 * fixed mode- but note that whatever we get out of 2991 * sagetparams below will actually determine whether 2992 * we are actually *in* fixed mode. 2993 */ 2994 softc->max_blk = scsi_3btoul(rblim->maximum); 2995 softc->min_blk = scsi_2btoul(rblim->minimum); 2996 2997 2998 } 2999 /* 3000 * Next, perform a mode sense to determine 3001 * current density, blocksize, compression etc. 3002 */ 3003 error = sagetparams(periph, SA_PARAM_ALL, 3004 &softc->media_blksize, 3005 &softc->media_density, 3006 &softc->media_numblks, 3007 &softc->buffer_mode, &write_protect, 3008 &softc->speed, &comp_supported, 3009 &comp_enabled, &softc->comp_algorithm, 3010 NULL, NULL, 0, 0); 3011 3012 if (error != 0) { 3013 /* 3014 * We could work a little harder here. We could 3015 * adjust our attempts to get information. It 3016 * might be an ancient tape drive. If someone 3017 * nudges us, we'll do that. 3018 */ 3019 goto exit; 3020 } 3021 3022 /* 3023 * If no quirk has determined that this is a device that is 3024 * preferred to be in fixed or variable mode, now is the time 3025 * to find out. 3026 */ 3027 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3028 guessing = 1; 3029 /* 3030 * This could be expensive to find out. Luckily we 3031 * only need to do this once. If we start out in 3032 * 'default' mode, try and set ourselves to one 3033 * of the densities that would determine a wad 3034 * of other stuff. Go from highest to lowest. 3035 */ 3036 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3037 int i; 3038 static u_int8_t ctry[] = { 3039 SCSI_DENSITY_HALFINCH_PE, 3040 SCSI_DENSITY_HALFINCH_6250C, 3041 SCSI_DENSITY_HALFINCH_6250, 3042 SCSI_DENSITY_HALFINCH_1600, 3043 SCSI_DENSITY_HALFINCH_800, 3044 SCSI_DENSITY_QIC_4GB, 3045 SCSI_DENSITY_QIC_2GB, 3046 SCSI_DENSITY_QIC_525_320, 3047 SCSI_DENSITY_QIC_150, 3048 SCSI_DENSITY_QIC_120, 3049 SCSI_DENSITY_QIC_24, 3050 SCSI_DENSITY_QIC_11_9TRK, 3051 SCSI_DENSITY_QIC_11_4TRK, 3052 SCSI_DENSITY_QIC_1320, 3053 SCSI_DENSITY_QIC_3080, 3054 0 3055 }; 3056 for (i = 0; ctry[i]; i++) { 3057 error = sasetparams(periph, 3058 SA_PARAM_DENSITY, 0, ctry[i], 3059 0, SF_NO_PRINT); 3060 if (error == 0) { 3061 softc->media_density = ctry[i]; 3062 break; 3063 } 3064 } 3065 } 3066 switch (softc->media_density) { 3067 case SCSI_DENSITY_QIC_11_4TRK: 3068 case SCSI_DENSITY_QIC_11_9TRK: 3069 case SCSI_DENSITY_QIC_24: 3070 case SCSI_DENSITY_QIC_120: 3071 case SCSI_DENSITY_QIC_150: 3072 case SCSI_DENSITY_QIC_525_320: 3073 case SCSI_DENSITY_QIC_1320: 3074 case SCSI_DENSITY_QIC_3080: 3075 softc->quirks &= ~SA_QUIRK_2FM; 3076 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3077 softc->last_media_blksize = 512; 3078 break; 3079 case SCSI_DENSITY_QIC_4GB: 3080 case SCSI_DENSITY_QIC_2GB: 3081 softc->quirks &= ~SA_QUIRK_2FM; 3082 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3083 softc->last_media_blksize = 1024; 3084 break; 3085 default: 3086 softc->last_media_blksize = 3087 softc->media_blksize; 3088 softc->quirks |= SA_QUIRK_VARIABLE; 3089 break; 3090 } 3091 } 3092 3093 /* 3094 * If no quirk has determined that this is a device that needs 3095 * to have 2 Filemarks at EOD, now is the time to find out. 3096 */ 3097 3098 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3099 switch (softc->media_density) { 3100 case SCSI_DENSITY_HALFINCH_800: 3101 case SCSI_DENSITY_HALFINCH_1600: 3102 case SCSI_DENSITY_HALFINCH_6250: 3103 case SCSI_DENSITY_HALFINCH_6250C: 3104 case SCSI_DENSITY_HALFINCH_PE: 3105 softc->quirks &= ~SA_QUIRK_1FM; 3106 softc->quirks |= SA_QUIRK_2FM; 3107 break; 3108 default: 3109 break; 3110 } 3111 } 3112 3113 /* 3114 * Now validate that some info we got makes sense. 3115 */ 3116 if ((softc->max_blk < softc->media_blksize) || 3117 (softc->min_blk > softc->media_blksize && 3118 softc->media_blksize)) { 3119 xpt_print(periph->path, 3120 "BLOCK LIMITS (%d..%d) could not match current " 3121 "block settings (%d)- adjusting\n", softc->min_blk, 3122 softc->max_blk, softc->media_blksize); 3123 softc->max_blk = softc->min_blk = 3124 softc->media_blksize; 3125 } 3126 3127 /* 3128 * Now put ourselves into the right frame of mind based 3129 * upon quirks... 3130 */ 3131 tryagain: 3132 /* 3133 * If we want to be in FIXED mode and our current blocksize 3134 * is not equal to our last blocksize (if nonzero), try and 3135 * set ourselves to this last blocksize (as the 'preferred' 3136 * block size). The initial quirkmatch at registry sets the 3137 * initial 'last' blocksize. If, for whatever reason, this 3138 * 'last' blocksize is zero, set the blocksize to 512, 3139 * or min_blk if that's larger. 3140 */ 3141 if ((softc->quirks & SA_QUIRK_FIXED) && 3142 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3143 (softc->media_blksize != softc->last_media_blksize)) { 3144 softc->media_blksize = softc->last_media_blksize; 3145 if (softc->media_blksize == 0) { 3146 softc->media_blksize = 512; 3147 if (softc->media_blksize < softc->min_blk) { 3148 softc->media_blksize = softc->min_blk; 3149 } 3150 } 3151 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3152 softc->media_blksize, 0, 0, SF_NO_PRINT); 3153 if (error) { 3154 xpt_print(periph->path, 3155 "unable to set fixed blocksize to %d\n", 3156 softc->media_blksize); 3157 goto exit; 3158 } 3159 } 3160 3161 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3162 (softc->media_blksize != 0)) { 3163 softc->last_media_blksize = softc->media_blksize; 3164 softc->media_blksize = 0; 3165 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3166 0, 0, 0, SF_NO_PRINT); 3167 if (error) { 3168 /* 3169 * If this fails and we were guessing, just 3170 * assume that we got it wrong and go try 3171 * fixed block mode. Don't even check against 3172 * density code at this point. 3173 */ 3174 if (guessing) { 3175 softc->quirks &= ~SA_QUIRK_VARIABLE; 3176 softc->quirks |= SA_QUIRK_FIXED; 3177 if (softc->last_media_blksize == 0) 3178 softc->last_media_blksize = 512; 3179 goto tryagain; 3180 } 3181 xpt_print(periph->path, 3182 "unable to set variable blocksize\n"); 3183 goto exit; 3184 } 3185 } 3186 3187 /* 3188 * Now that we have the current block size, 3189 * set up some parameters for sastart's usage. 3190 */ 3191 if (softc->media_blksize) { 3192 softc->flags |= SA_FLAG_FIXED; 3193 if (powerof2(softc->media_blksize)) { 3194 softc->blk_shift = 3195 ffs(softc->media_blksize) - 1; 3196 softc->blk_mask = softc->media_blksize - 1; 3197 } else { 3198 softc->blk_mask = ~0; 3199 softc->blk_shift = 0; 3200 } 3201 } else { 3202 /* 3203 * The SCSI-3 spec allows 0 to mean "unspecified". 3204 * The SCSI-1 spec allows 0 to mean 'infinite'. 3205 * 3206 * Either works here. 3207 */ 3208 if (softc->max_blk == 0) { 3209 softc->max_blk = ~0; 3210 } 3211 softc->blk_shift = 0; 3212 if (softc->blk_gran != 0) { 3213 softc->blk_mask = softc->blk_gran - 1; 3214 } else { 3215 softc->blk_mask = 0; 3216 } 3217 } 3218 3219 if (write_protect) 3220 softc->flags |= SA_FLAG_TAPE_WP; 3221 3222 if (comp_supported) { 3223 if (softc->saved_comp_algorithm == 0) 3224 softc->saved_comp_algorithm = 3225 softc->comp_algorithm; 3226 softc->flags |= SA_FLAG_COMP_SUPP; 3227 if (comp_enabled) 3228 softc->flags |= SA_FLAG_COMP_ENABLED; 3229 } else 3230 softc->flags |= SA_FLAG_COMP_UNSUPP; 3231 3232 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3233 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3234 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3235 0, 0, SF_NO_PRINT); 3236 if (error == 0) { 3237 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3238 } else { 3239 xpt_print(periph->path, 3240 "unable to set buffered mode\n"); 3241 } 3242 error = 0; /* not an error */ 3243 } 3244 3245 3246 if (error == 0) { 3247 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3248 } 3249 exit: 3250 if (rblim != NULL) 3251 free(rblim, M_SCSISA); 3252 3253 if (error != 0) { 3254 softc->dsreg = MTIO_DSREG_NIL; 3255 } else { 3256 softc->fileno = softc->blkno = 0; 3257 softc->rep_fileno = softc->rep_blkno = -1; 3258 softc->partition = 0; 3259 softc->dsreg = MTIO_DSREG_REST; 3260 } 3261 #ifdef SA_1FM_AT_EOD 3262 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3263 softc->quirks |= SA_QUIRK_1FM; 3264 #else 3265 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3266 softc->quirks |= SA_QUIRK_2FM; 3267 #endif 3268 } else 3269 xpt_release_ccb(ccb); 3270 3271 /* 3272 * If we return an error, we're not mounted any more, 3273 * so release any device reservation. 3274 */ 3275 if (error != 0) { 3276 (void) sareservereleaseunit(periph, FALSE); 3277 } else { 3278 /* 3279 * Clear I/O residual. 3280 */ 3281 softc->last_io_resid = 0; 3282 softc->last_ctl_resid = 0; 3283 } 3284 return (error); 3285 } 3286 3287 /* 3288 * How many filemarks do we need to write if we were to terminate the 3289 * tape session right now? Note that this can be a negative number 3290 */ 3291 3292 static int 3293 samarkswanted(struct cam_periph *periph) 3294 { 3295 int markswanted; 3296 struct sa_softc *softc; 3297 3298 softc = (struct sa_softc *)periph->softc; 3299 markswanted = 0; 3300 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3301 markswanted++; 3302 if (softc->quirks & SA_QUIRK_2FM) 3303 markswanted++; 3304 } 3305 markswanted -= softc->filemarks; 3306 return (markswanted); 3307 } 3308 3309 static int 3310 sacheckeod(struct cam_periph *periph) 3311 { 3312 int error; 3313 int markswanted; 3314 3315 markswanted = samarkswanted(periph); 3316 3317 if (markswanted > 0) { 3318 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3319 } else { 3320 error = 0; 3321 } 3322 return (error); 3323 } 3324 3325 static int 3326 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3327 { 3328 static const char *toobig = 3329 "%d-byte tape record bigger than supplied buffer\n"; 3330 struct cam_periph *periph; 3331 struct sa_softc *softc; 3332 struct ccb_scsiio *csio; 3333 struct scsi_sense_data *sense; 3334 uint64_t resid = 0; 3335 int64_t info = 0; 3336 cam_status status; 3337 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3338 int sense_len; 3339 uint8_t stream_bits; 3340 3341 periph = xpt_path_periph(ccb->ccb_h.path); 3342 softc = (struct sa_softc *)periph->softc; 3343 csio = &ccb->csio; 3344 sense = &csio->sense_data; 3345 sense_len = csio->sense_len - csio->sense_resid; 3346 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3347 &asc, &ascq, /*show_errors*/ 1); 3348 if (asc != -1 && ascq != -1) 3349 aqvalid = 1; 3350 else 3351 aqvalid = 0; 3352 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3353 stream_valid = 1; 3354 else 3355 stream_valid = 0; 3356 error = 0; 3357 3358 status = csio->ccb_h.status & CAM_STATUS_MASK; 3359 3360 /* 3361 * Calculate/latch up, any residuals... We do this in a funny 2-step 3362 * so we can print stuff here if we have CAM_DEBUG enabled for this 3363 * unit. 3364 */ 3365 if (status == CAM_SCSI_STATUS_ERROR) { 3366 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3367 &info) == 0) { 3368 if ((softc->flags & SA_FLAG_FIXED) != 0) 3369 resid *= softc->media_blksize; 3370 } else { 3371 resid = csio->dxfer_len; 3372 info = resid; 3373 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3374 if (softc->media_blksize) 3375 info /= softc->media_blksize; 3376 } 3377 } 3378 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3379 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3380 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3381 sizeof (struct scsi_sense_data)); 3382 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3383 (int) csio->cdb_len); 3384 softc->last_io_resid = resid; 3385 softc->last_resid_was_io = 1; 3386 } else { 3387 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3388 sizeof (struct scsi_sense_data)); 3389 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3390 (int) csio->cdb_len); 3391 softc->last_ctl_resid = resid; 3392 softc->last_resid_was_io = 0; 3393 } 3394 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3395 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3396 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3397 sense_key, asc, ascq, status, 3398 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3399 csio->dxfer_len)); 3400 } else { 3401 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3402 ("Cam Status 0x%x\n", status)); 3403 } 3404 3405 switch (status) { 3406 case CAM_REQ_CMP: 3407 return (0); 3408 case CAM_SCSI_STATUS_ERROR: 3409 /* 3410 * If a read/write command, we handle it here. 3411 */ 3412 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3413 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3414 break; 3415 } 3416 /* 3417 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 3418 * on a non read/write command, we assume it's not an error 3419 * and propagate the residule and return. 3420 */ 3421 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 3422 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3423 csio->resid = resid; 3424 QFRLS(ccb); 3425 return (0); 3426 } 3427 /* 3428 * Otherwise, we let the common code handle this. 3429 */ 3430 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3431 3432 /* 3433 * XXX: To Be Fixed 3434 * We cannot depend upon CAM honoring retry counts for these. 3435 */ 3436 case CAM_SCSI_BUS_RESET: 3437 case CAM_BDR_SENT: 3438 if (ccb->ccb_h.retry_count <= 0) { 3439 return (EIO); 3440 } 3441 /* FALLTHROUGH */ 3442 default: 3443 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3444 } 3445 3446 /* 3447 * Handle filemark, end of tape, mismatched record sizes.... 3448 * From this point out, we're only handling read/write cases. 3449 * Handle writes && reads differently. 3450 */ 3451 3452 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3453 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3454 csio->resid = resid; 3455 error = ENOSPC; 3456 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3457 softc->flags |= SA_FLAG_EOM_PENDING; 3458 /* 3459 * Grotesque as it seems, the few times 3460 * I've actually seen a non-zero resid, 3461 * the tape drive actually lied and had 3462 * written all the data!. 3463 */ 3464 csio->resid = 0; 3465 } 3466 } else { 3467 csio->resid = resid; 3468 if (sense_key == SSD_KEY_BLANK_CHECK) { 3469 if (softc->quirks & SA_QUIRK_1FM) { 3470 error = 0; 3471 softc->flags |= SA_FLAG_EOM_PENDING; 3472 } else { 3473 error = EIO; 3474 } 3475 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3476 if (softc->flags & SA_FLAG_FIXED) { 3477 error = -1; 3478 softc->flags |= SA_FLAG_EOF_PENDING; 3479 } 3480 /* 3481 * Unconditionally, if we detected a filemark on a read, 3482 * mark that we've run moved a file ahead. 3483 */ 3484 if (softc->fileno != (daddr_t) -1) { 3485 softc->fileno++; 3486 softc->blkno = 0; 3487 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3488 } 3489 } 3490 } 3491 3492 /* 3493 * Incorrect Length usually applies to read, but can apply to writes. 3494 */ 3495 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3496 if (info < 0) { 3497 xpt_print(csio->ccb_h.path, toobig, 3498 csio->dxfer_len - info); 3499 csio->resid = csio->dxfer_len; 3500 error = EIO; 3501 } else { 3502 csio->resid = resid; 3503 if (softc->flags & SA_FLAG_FIXED) { 3504 softc->flags |= SA_FLAG_EIO_PENDING; 3505 } 3506 /* 3507 * Bump the block number if we hadn't seen a filemark. 3508 * Do this independent of errors (we've moved anyway). 3509 */ 3510 if ((stream_valid == 0) || 3511 (stream_bits & SSD_FILEMARK) == 0) { 3512 if (softc->blkno != (daddr_t) -1) { 3513 softc->blkno++; 3514 csio->ccb_h.ccb_pflags |= 3515 SA_POSITION_UPDATED; 3516 } 3517 } 3518 } 3519 } 3520 3521 if (error <= 0) { 3522 /* 3523 * Unfreeze the queue if frozen as we're not returning anything 3524 * to our waiters that would indicate an I/O error has occurred 3525 * (yet). 3526 */ 3527 QFRLS(ccb); 3528 error = 0; 3529 } 3530 return (error); 3531 } 3532 3533 static int 3534 sagetparams(struct cam_periph *periph, sa_params params_to_get, 3535 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3536 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3537 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3538 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3539 int dp_size, int prot_changeable) 3540 { 3541 union ccb *ccb; 3542 void *mode_buffer; 3543 struct scsi_mode_header_6 *mode_hdr; 3544 struct scsi_mode_blk_desc *mode_blk; 3545 int mode_buffer_len; 3546 struct sa_softc *softc; 3547 u_int8_t cpage; 3548 int error; 3549 cam_status status; 3550 3551 softc = (struct sa_softc *)periph->softc; 3552 ccb = cam_periph_getccb(periph, 1); 3553 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3554 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3555 else 3556 cpage = SA_DATA_COMPRESSION_PAGE; 3557 3558 retry: 3559 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3560 3561 if (params_to_get & SA_PARAM_COMPRESSION) { 3562 if (softc->quirks & SA_QUIRK_NOCOMP) { 3563 *comp_supported = FALSE; 3564 params_to_get &= ~SA_PARAM_COMPRESSION; 3565 } else 3566 mode_buffer_len += sizeof (sa_comp_t); 3567 } 3568 3569 /* XXX Fix M_NOWAIT */ 3570 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3571 if (mode_buffer == NULL) { 3572 xpt_release_ccb(ccb); 3573 return (ENOMEM); 3574 } 3575 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3576 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3577 3578 /* it is safe to retry this */ 3579 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3580 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3581 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3582 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3583 3584 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3585 softc->device_stats); 3586 3587 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3588 3589 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3590 /* 3591 * Hmm. Let's see if we can try another page... 3592 * If we've already done that, give up on compression 3593 * for this device and remember this for the future 3594 * and attempt the request without asking for compression 3595 * info. 3596 */ 3597 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3598 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3599 goto retry; 3600 } 3601 softc->quirks |= SA_QUIRK_NOCOMP; 3602 free(mode_buffer, M_SCSISA); 3603 goto retry; 3604 } else if (status == CAM_SCSI_STATUS_ERROR) { 3605 /* Tell the user about the fatal error. */ 3606 scsi_sense_print(&ccb->csio); 3607 goto sagetparamsexit; 3608 } 3609 3610 /* 3611 * If the user only wants the compression information, and 3612 * the device doesn't send back the block descriptor, it's 3613 * no big deal. If the user wants more than just 3614 * compression, though, and the device doesn't pass back the 3615 * block descriptor, we need to send another mode sense to 3616 * get the block descriptor. 3617 */ 3618 if ((mode_hdr->blk_desc_len == 0) && 3619 (params_to_get & SA_PARAM_COMPRESSION) && 3620 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3621 3622 /* 3623 * Decrease the mode buffer length by the size of 3624 * the compression page, to make sure the data 3625 * there doesn't get overwritten. 3626 */ 3627 mode_buffer_len -= sizeof (sa_comp_t); 3628 3629 /* 3630 * Now move the compression page that we presumably 3631 * got back down the memory chunk a little bit so 3632 * it doesn't get spammed. 3633 */ 3634 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3635 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3636 3637 /* 3638 * Now, we issue another mode sense and just ask 3639 * for the block descriptor, etc. 3640 */ 3641 3642 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3643 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3644 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3645 SCSIOP_TIMEOUT); 3646 3647 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3648 softc->device_stats); 3649 3650 if (error != 0) 3651 goto sagetparamsexit; 3652 } 3653 3654 if (params_to_get & SA_PARAM_BLOCKSIZE) 3655 *blocksize = scsi_3btoul(mode_blk->blklen); 3656 3657 if (params_to_get & SA_PARAM_NUMBLOCKS) 3658 *numblocks = scsi_3btoul(mode_blk->nblocks); 3659 3660 if (params_to_get & SA_PARAM_BUFF_MODE) 3661 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 3662 3663 if (params_to_get & SA_PARAM_DENSITY) 3664 *density = mode_blk->density; 3665 3666 if (params_to_get & SA_PARAM_WP) 3667 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 3668 3669 if (params_to_get & SA_PARAM_SPEED) 3670 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 3671 3672 if (params_to_get & SA_PARAM_COMPRESSION) { 3673 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 3674 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3675 struct scsi_data_compression_page *cp = &ntcs->dcomp; 3676 *comp_supported = 3677 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 3678 *comp_enabled = 3679 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 3680 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 3681 } else { 3682 struct scsi_dev_conf_page *cp = &ntcs->dconf; 3683 /* 3684 * We don't really know whether this device supports 3685 * Data Compression if the algorithm field is 3686 * zero. Just say we do. 3687 */ 3688 *comp_supported = TRUE; 3689 *comp_enabled = 3690 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 3691 *comp_algorithm = cp->sel_comp_alg; 3692 } 3693 if (tcs != NULL) 3694 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 3695 } 3696 3697 if ((params_to_get & SA_PARAM_DENSITY_EXT) 3698 && (softc->scsi_rev >= SCSI_REV_SPC)) { 3699 int i; 3700 3701 for (i = 0; i < SA_DENSITY_TYPES; i++) { 3702 scsi_report_density_support(&ccb->csio, 3703 /*retries*/ 1, 3704 /*cbfcnp*/ sadone, 3705 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3706 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 3707 /*medium_type*/ softc->density_type_bits[i] & 3708 SRDS_MEDIUM_TYPE, 3709 /*data_ptr*/ softc->density_info[i], 3710 /*length*/ sizeof(softc->density_info[i]), 3711 /*sense_len*/ SSD_FULL_SIZE, 3712 /*timeout*/ REP_DENSITY_TIMEOUT); 3713 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3714 softc->device_stats); 3715 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3716 3717 /* 3718 * Some tape drives won't support this command at 3719 * all, but hopefully we'll minimize that with the 3720 * check for SPC or greater support above. If they 3721 * don't support the default report (neither the 3722 * MEDIA or MEDIUM_TYPE bits set), then there is 3723 * really no point in continuing on to look for 3724 * other reports. 3725 */ 3726 if ((error != 0) 3727 || (status != CAM_REQ_CMP)) { 3728 error = 0; 3729 softc->density_info_valid[i] = 0; 3730 if (softc->density_type_bits[i] == 0) 3731 break; 3732 else 3733 continue; 3734 } 3735 softc->density_info_valid[i] = ccb->csio.dxfer_len - 3736 ccb->csio.resid; 3737 } 3738 } 3739 3740 /* 3741 * Get logical block protection parameters if the drive supports it. 3742 */ 3743 if ((params_to_get & SA_PARAM_LBP) 3744 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 3745 struct scsi_mode_header_10 *mode10_hdr; 3746 struct scsi_control_data_prot_subpage *dp_page; 3747 struct scsi_mode_sense_10 *cdb; 3748 struct sa_prot_state *prot; 3749 int dp_len, returned_len; 3750 3751 if (dp_size == 0) 3752 dp_size = sizeof(*dp_page); 3753 3754 dp_len = sizeof(*mode10_hdr) + dp_size; 3755 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3756 if (mode10_hdr == NULL) { 3757 error = ENOMEM; 3758 goto sagetparamsexit; 3759 } 3760 3761 scsi_mode_sense_len(&ccb->csio, 3762 /*retries*/ 5, 3763 /*cbfcnp*/ sadone, 3764 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3765 /*dbd*/ TRUE, 3766 /*page_code*/ (prot_changeable == 0) ? 3767 SMS_PAGE_CTRL_CURRENT : 3768 SMS_PAGE_CTRL_CHANGEABLE, 3769 /*page*/ SMS_CONTROL_MODE_PAGE, 3770 /*param_buf*/ (uint8_t *)mode10_hdr, 3771 /*param_len*/ dp_len, 3772 /*minimum_cmd_size*/ 10, 3773 /*sense_len*/ SSD_FULL_SIZE, 3774 /*timeout*/ SCSIOP_TIMEOUT); 3775 /* 3776 * XXX KDM we need to be able to set the subpage in the 3777 * fill function. 3778 */ 3779 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 3780 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 3781 3782 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3783 softc->device_stats); 3784 if (error != 0) { 3785 free(mode10_hdr, M_SCSISA); 3786 goto sagetparamsexit; 3787 } 3788 3789 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3790 if (status != CAM_REQ_CMP) { 3791 error = EINVAL; 3792 free(mode10_hdr, M_SCSISA); 3793 goto sagetparamsexit; 3794 } 3795 3796 /* 3797 * The returned data length at least has to be long enough 3798 * for us to look at length in the mode page header. 3799 */ 3800 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 3801 if (returned_len < sizeof(mode10_hdr->data_length)) { 3802 error = EINVAL; 3803 free(mode10_hdr, M_SCSISA); 3804 goto sagetparamsexit; 3805 } 3806 3807 returned_len = min(returned_len, 3808 sizeof(mode10_hdr->data_length) + 3809 scsi_2btoul(mode10_hdr->data_length)); 3810 3811 dp_page = (struct scsi_control_data_prot_subpage *) 3812 &mode10_hdr[1]; 3813 3814 /* 3815 * We also have to have enough data to include the prot_bits 3816 * in the subpage. 3817 */ 3818 if (returned_len < (sizeof(*mode10_hdr) + 3819 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 3820 + sizeof(dp_page->prot_bits))) { 3821 error = EINVAL; 3822 free(mode10_hdr, M_SCSISA); 3823 goto sagetparamsexit; 3824 } 3825 3826 prot = &softc->prot_info.cur_prot_state; 3827 prot->prot_method = dp_page->prot_method; 3828 prot->pi_length = dp_page->pi_length & 3829 SA_CTRL_DP_PI_LENGTH_MASK; 3830 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 3831 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 3832 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 3833 prot->initialized = 1; 3834 3835 if (prot_page != NULL) 3836 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 3837 sizeof(*dp_page))); 3838 3839 free(mode10_hdr, M_SCSISA); 3840 } 3841 3842 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3843 int idx; 3844 char *xyz = mode_buffer; 3845 xpt_print_path(periph->path); 3846 printf("Mode Sense Data="); 3847 for (idx = 0; idx < mode_buffer_len; idx++) 3848 printf(" 0x%02x", xyz[idx] & 0xff); 3849 printf("\n"); 3850 } 3851 3852 sagetparamsexit: 3853 3854 xpt_release_ccb(ccb); 3855 free(mode_buffer, M_SCSISA); 3856 return (error); 3857 } 3858 3859 /* 3860 * Set protection information to the pending protection information stored 3861 * in the softc. 3862 */ 3863 static int 3864 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 3865 { 3866 struct sa_softc *softc; 3867 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 3868 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 3869 union ccb *ccb; 3870 uint8_t current_speed; 3871 size_t dp_size, dp_page_length; 3872 int dp_len, buff_mode; 3873 int error; 3874 3875 softc = (struct sa_softc *)periph->softc; 3876 mode10_hdr = NULL; 3877 mode10_changeable = NULL; 3878 ccb = NULL; 3879 3880 /* 3881 * Start off with the size set to the actual length of the page 3882 * that we have defined. 3883 */ 3884 dp_size = sizeof(*dp_changeable); 3885 dp_page_length = dp_size - 3886 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 3887 3888 retry_length: 3889 3890 dp_len = sizeof(*mode10_changeable) + dp_size; 3891 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3892 if (mode10_changeable == NULL) { 3893 error = ENOMEM; 3894 goto bailout; 3895 } 3896 3897 dp_changeable = 3898 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 3899 3900 /* 3901 * First get the data protection page changeable parameters mask. 3902 * We need to know which parameters the drive supports changing. 3903 * We also need to know what the drive claims that its page length 3904 * is. The reason is that IBM drives in particular are very picky 3905 * about the page length. They want it (the length set in the 3906 * page structure itself) to be 28 bytes, and they want the 3907 * parameter list length specified in the mode select header to be 3908 * 40 bytes. So, to work with IBM drives as well as any other tape 3909 * drive, find out what the drive claims the page length is, and 3910 * make sure that we match that. 3911 */ 3912 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3913 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3914 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 3915 if (error != 0) 3916 goto bailout; 3917 3918 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 3919 dp_page_length = scsi_2btoul(dp_changeable->length); 3920 dp_size = dp_page_length + 3921 __offsetof(struct scsi_control_data_prot_subpage, 3922 prot_method); 3923 free(mode10_changeable, M_SCSISA); 3924 mode10_changeable = NULL; 3925 goto retry_length; 3926 } 3927 3928 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3929 if (mode10_hdr == NULL) { 3930 error = ENOMEM; 3931 goto bailout; 3932 } 3933 3934 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 3935 3936 /* 3937 * Now grab the actual current settings in the page. 3938 */ 3939 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3940 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3941 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 3942 if (error != 0) 3943 goto bailout; 3944 3945 /* These two fields need to be 0 for MODE SELECT */ 3946 scsi_ulto2b(0, mode10_hdr->data_length); 3947 mode10_hdr->medium_type = 0; 3948 /* We are not including a block descriptor */ 3949 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 3950 3951 mode10_hdr->dev_spec = current_speed; 3952 /* if set, set single-initiator buffering mode */ 3953 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 3954 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 3955 } 3956 3957 /* 3958 * For each field, make sure that the drive allows changing it 3959 * before bringing in the user's setting. 3960 */ 3961 if (dp_changeable->prot_method != 0) 3962 dp_page->prot_method = new_prot->prot_method; 3963 3964 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 3965 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 3966 dp_page->pi_length |= (new_prot->pi_length & 3967 SA_CTRL_DP_PI_LENGTH_MASK); 3968 } 3969 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 3970 if (new_prot->lbp_w) 3971 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 3972 else 3973 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 3974 } 3975 3976 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 3977 if (new_prot->lbp_r) 3978 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 3979 else 3980 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 3981 } 3982 3983 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 3984 if (new_prot->rbdp) 3985 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 3986 else 3987 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 3988 } 3989 3990 ccb = cam_periph_getccb(periph, 1); 3991 3992 scsi_mode_select_len(&ccb->csio, 3993 /*retries*/ 5, 3994 /*cbfcnp*/ sadone, 3995 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3996 /*scsi_page_fmt*/ TRUE, 3997 /*save_pages*/ FALSE, 3998 /*param_buf*/ (uint8_t *)mode10_hdr, 3999 /*param_len*/ dp_len, 4000 /*minimum_cmd_size*/ 10, 4001 /*sense_len*/ SSD_FULL_SIZE, 4002 /*timeout*/ SCSIOP_TIMEOUT); 4003 4004 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4005 if (error != 0) 4006 goto bailout; 4007 4008 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4009 error = EINVAL; 4010 goto bailout; 4011 } 4012 4013 /* 4014 * The operation was successful. We could just copy the settings 4015 * the user requested, but just in case the drive ignored some of 4016 * our settings, let's ask for status again. 4017 */ 4018 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4019 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4020 NULL, NULL, dp_page, dp_size, 0); 4021 4022 bailout: 4023 if (ccb != NULL) 4024 xpt_release_ccb(ccb); 4025 free(mode10_hdr, M_SCSISA); 4026 free(mode10_changeable, M_SCSISA); 4027 return (error); 4028 } 4029 4030 /* 4031 * The purpose of this function is to set one of four different parameters 4032 * for a tape drive: 4033 * - blocksize 4034 * - density 4035 * - compression / compression algorithm 4036 * - buffering mode 4037 * 4038 * The assumption is that this will be called from saioctl(), and therefore 4039 * from a process context. Thus the waiting malloc calls below. If that 4040 * assumption ever changes, the malloc calls should be changed to be 4041 * NOWAIT mallocs. 4042 * 4043 * Any or all of the four parameters may be set when this function is 4044 * called. It should handle setting more than one parameter at once. 4045 */ 4046 static int 4047 sasetparams(struct cam_periph *periph, sa_params params_to_set, 4048 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4049 u_int32_t sense_flags) 4050 { 4051 struct sa_softc *softc; 4052 u_int32_t current_blocksize; 4053 u_int32_t current_calg; 4054 u_int8_t current_density; 4055 u_int8_t current_speed; 4056 int comp_enabled, comp_supported; 4057 void *mode_buffer; 4058 int mode_buffer_len; 4059 struct scsi_mode_header_6 *mode_hdr; 4060 struct scsi_mode_blk_desc *mode_blk; 4061 sa_comp_t *ccomp, *cpage; 4062 int buff_mode; 4063 union ccb *ccb = NULL; 4064 int error; 4065 4066 softc = (struct sa_softc *)periph->softc; 4067 4068 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4069 if (ccomp == NULL) 4070 return (ENOMEM); 4071 4072 /* 4073 * Since it doesn't make sense to set the number of blocks, or 4074 * write protection, we won't try to get the current value. We 4075 * always want to get the blocksize, so we can set it back to the 4076 * proper value. 4077 */ 4078 error = sagetparams(periph, 4079 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4080 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4081 ¤t_speed, &comp_supported, &comp_enabled, 4082 ¤t_calg, ccomp, NULL, 0, 0); 4083 4084 if (error != 0) { 4085 free(ccomp, M_SCSISA); 4086 return (error); 4087 } 4088 4089 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4090 if (params_to_set & SA_PARAM_COMPRESSION) 4091 mode_buffer_len += sizeof (sa_comp_t); 4092 4093 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4094 if (mode_buffer == NULL) { 4095 free(ccomp, M_SCSISA); 4096 return (ENOMEM); 4097 } 4098 4099 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4100 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4101 4102 ccb = cam_periph_getccb(periph, 1); 4103 4104 retry: 4105 4106 if (params_to_set & SA_PARAM_COMPRESSION) { 4107 if (mode_blk) { 4108 cpage = (sa_comp_t *)&mode_blk[1]; 4109 } else { 4110 cpage = (sa_comp_t *)&mode_hdr[1]; 4111 } 4112 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4113 cpage->hdr.pagecode &= ~0x80; 4114 } else 4115 cpage = NULL; 4116 4117 /* 4118 * If the caller wants us to set the blocksize, use the one they 4119 * pass in. Otherwise, use the blocksize we got back from the 4120 * mode select above. 4121 */ 4122 if (mode_blk) { 4123 if (params_to_set & SA_PARAM_BLOCKSIZE) 4124 scsi_ulto3b(blocksize, mode_blk->blklen); 4125 else 4126 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4127 4128 /* 4129 * Set density if requested, else preserve old density. 4130 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4131 * devices, else density we've latched up in our softc. 4132 */ 4133 if (params_to_set & SA_PARAM_DENSITY) { 4134 mode_blk->density = density; 4135 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4136 mode_blk->density = SCSI_SAME_DENSITY; 4137 } else { 4138 mode_blk->density = softc->media_density; 4139 } 4140 } 4141 4142 /* 4143 * For mode selects, these two fields must be zero. 4144 */ 4145 mode_hdr->data_length = 0; 4146 mode_hdr->medium_type = 0; 4147 4148 /* set the speed to the current value */ 4149 mode_hdr->dev_spec = current_speed; 4150 4151 /* if set, set single-initiator buffering mode */ 4152 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4153 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4154 } 4155 4156 if (mode_blk) 4157 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4158 else 4159 mode_hdr->blk_desc_len = 0; 4160 4161 /* 4162 * First, if the user wants us to set the compression algorithm or 4163 * just turn compression on, check to make sure that this drive 4164 * supports compression. 4165 */ 4166 if (params_to_set & SA_PARAM_COMPRESSION) { 4167 /* 4168 * If the compression algorithm is 0, disable compression. 4169 * If the compression algorithm is non-zero, enable 4170 * compression and set the compression type to the 4171 * specified compression algorithm, unless the algorithm is 4172 * MT_COMP_ENABLE. In that case, we look at the 4173 * compression algorithm that is currently set and if it is 4174 * non-zero, we leave it as-is. If it is zero, and we have 4175 * saved a compression algorithm from a time when 4176 * compression was enabled before, set the compression to 4177 * the saved value. 4178 */ 4179 switch (ccomp->hdr.pagecode & ~0x80) { 4180 case SA_DEVICE_CONFIGURATION_PAGE: 4181 { 4182 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4183 if (calg == 0) { 4184 dcp->sel_comp_alg = SA_COMP_NONE; 4185 break; 4186 } 4187 if (calg != MT_COMP_ENABLE) { 4188 dcp->sel_comp_alg = calg; 4189 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4190 softc->saved_comp_algorithm != 0) { 4191 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4192 } 4193 break; 4194 } 4195 case SA_DATA_COMPRESSION_PAGE: 4196 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4197 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4198 if (calg == 0) { 4199 /* 4200 * Disable compression, but leave the 4201 * decompression and the capability bit 4202 * alone. 4203 */ 4204 dcp->dce_and_dcc = SA_DCP_DCC; 4205 dcp->dde_and_red |= SA_DCP_DDE; 4206 break; 4207 } 4208 /* enable compression && decompression */ 4209 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4210 dcp->dde_and_red |= SA_DCP_DDE; 4211 /* 4212 * If there, use compression algorithm from caller. 4213 * Otherwise, if there's a saved compression algorithm 4214 * and there is no current algorithm, use the saved 4215 * algorithm. Else parrot back what we got and hope 4216 * for the best. 4217 */ 4218 if (calg != MT_COMP_ENABLE) { 4219 scsi_ulto4b(calg, dcp->comp_algorithm); 4220 scsi_ulto4b(calg, dcp->decomp_algorithm); 4221 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4222 softc->saved_comp_algorithm != 0) { 4223 scsi_ulto4b(softc->saved_comp_algorithm, 4224 dcp->comp_algorithm); 4225 scsi_ulto4b(softc->saved_comp_algorithm, 4226 dcp->decomp_algorithm); 4227 } 4228 break; 4229 } 4230 /* 4231 * Compression does not appear to be supported- 4232 * at least via the DATA COMPRESSION page. It 4233 * would be too much to ask us to believe that 4234 * the page itself is supported, but incorrectly 4235 * reports an ability to manipulate data compression, 4236 * so we'll assume that this device doesn't support 4237 * compression. We can just fall through for that. 4238 */ 4239 /* FALLTHROUGH */ 4240 default: 4241 /* 4242 * The drive doesn't seem to support compression, 4243 * so turn off the set compression bit. 4244 */ 4245 params_to_set &= ~SA_PARAM_COMPRESSION; 4246 xpt_print(periph->path, 4247 "device does not seem to support compression\n"); 4248 4249 /* 4250 * If that was the only thing the user wanted us to set, 4251 * clean up allocated resources and return with 4252 * 'operation not supported'. 4253 */ 4254 if (params_to_set == SA_PARAM_NONE) { 4255 free(mode_buffer, M_SCSISA); 4256 xpt_release_ccb(ccb); 4257 return (ENODEV); 4258 } 4259 4260 /* 4261 * That wasn't the only thing the user wanted us to set. 4262 * So, decrease the stated mode buffer length by the 4263 * size of the compression mode page. 4264 */ 4265 mode_buffer_len -= sizeof(sa_comp_t); 4266 } 4267 } 4268 4269 /* It is safe to retry this operation */ 4270 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 4271 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4272 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4273 4274 error = cam_periph_runccb(ccb, saerror, 0, 4275 sense_flags, softc->device_stats); 4276 4277 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4278 int idx; 4279 char *xyz = mode_buffer; 4280 xpt_print_path(periph->path); 4281 printf("Err%d, Mode Select Data=", error); 4282 for (idx = 0; idx < mode_buffer_len; idx++) 4283 printf(" 0x%02x", xyz[idx] & 0xff); 4284 printf("\n"); 4285 } 4286 4287 4288 if (error) { 4289 /* 4290 * If we can, try without setting density/blocksize. 4291 */ 4292 if (mode_blk) { 4293 if ((params_to_set & 4294 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4295 mode_blk = NULL; 4296 goto retry; 4297 } 4298 } else { 4299 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4300 cpage = (sa_comp_t *)&mode_blk[1]; 4301 } 4302 4303 /* 4304 * If we were setting the blocksize, and that failed, we 4305 * want to set it to its original value. If we weren't 4306 * setting the blocksize, we don't want to change it. 4307 */ 4308 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4309 4310 /* 4311 * Set density if requested, else preserve old density. 4312 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4313 * devices, else density we've latched up in our softc. 4314 */ 4315 if (params_to_set & SA_PARAM_DENSITY) { 4316 mode_blk->density = current_density; 4317 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4318 mode_blk->density = SCSI_SAME_DENSITY; 4319 } else { 4320 mode_blk->density = softc->media_density; 4321 } 4322 4323 if (params_to_set & SA_PARAM_COMPRESSION) 4324 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4325 4326 /* 4327 * The retry count is the only CCB field that might have been 4328 * changed that we care about, so reset it back to 1. 4329 */ 4330 ccb->ccb_h.retry_count = 1; 4331 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4332 softc->device_stats); 4333 } 4334 4335 xpt_release_ccb(ccb); 4336 4337 if (ccomp != NULL) 4338 free(ccomp, M_SCSISA); 4339 4340 if (params_to_set & SA_PARAM_COMPRESSION) { 4341 if (error) { 4342 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4343 /* 4344 * Even if we get an error setting compression, 4345 * do not say that we don't support it. We could 4346 * have been wrong, or it may be media specific. 4347 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4348 */ 4349 softc->saved_comp_algorithm = softc->comp_algorithm; 4350 softc->comp_algorithm = 0; 4351 } else { 4352 softc->flags |= SA_FLAG_COMP_ENABLED; 4353 softc->comp_algorithm = calg; 4354 } 4355 } 4356 4357 free(mode_buffer, M_SCSISA); 4358 return (error); 4359 } 4360 4361 static int 4362 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4363 struct mtextget *g) 4364 { 4365 int indent, error; 4366 char tmpstr[80]; 4367 struct sa_softc *softc; 4368 int tmpint; 4369 uint32_t maxio_tmp; 4370 struct ccb_getdev cgd; 4371 4372 softc = (struct sa_softc *)periph->softc; 4373 4374 error = 0; 4375 4376 error = sagetparams_common(dev, periph); 4377 if (error) 4378 goto extget_bailout; 4379 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4380 sagetpos(periph); 4381 4382 indent = 0; 4383 SASBADDNODE(sb, indent, mtextget); 4384 /* 4385 * Basic CAM peripheral information. 4386 */ 4387 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4388 strlen(periph->periph_name) + 1); 4389 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4390 xpt_setup_ccb(&cgd.ccb_h, 4391 periph->path, 4392 CAM_PRIORITY_NORMAL); 4393 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4394 xpt_action((union ccb *)&cgd); 4395 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4396 g->status = MT_EXT_GET_ERROR; 4397 snprintf(g->error_str, sizeof(g->error_str), 4398 "Error %#x returned for XPT_GDEV_TYPE CCB", 4399 cgd.ccb_h.status); 4400 goto extget_bailout; 4401 } 4402 4403 cam_strvis(tmpstr, cgd.inq_data.vendor, 4404 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4405 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4406 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4407 4408 cam_strvis(tmpstr, cgd.inq_data.product, 4409 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4410 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4411 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4412 4413 cam_strvis(tmpstr, cgd.inq_data.revision, 4414 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4415 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4416 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4417 4418 if (cgd.serial_num_len > 0) { 4419 char *tmpstr2; 4420 size_t ts2_len; 4421 int ts2_malloc; 4422 4423 ts2_len = 0; 4424 4425 if (cgd.serial_num_len > sizeof(tmpstr)) { 4426 ts2_len = cgd.serial_num_len + 1; 4427 ts2_malloc = 1; 4428 tmpstr2 = malloc(ts2_len, M_SCSISA, M_WAITOK | M_ZERO); 4429 } else { 4430 ts2_len = sizeof(tmpstr); 4431 ts2_malloc = 0; 4432 tmpstr2 = tmpstr; 4433 } 4434 4435 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4436 ts2_len); 4437 4438 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4439 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4440 if (ts2_malloc != 0) 4441 free(tmpstr2, M_SCSISA); 4442 } else { 4443 /* 4444 * We return a serial_num element in any case, but it will 4445 * be empty if the device has no serial number. 4446 */ 4447 tmpstr[0] = '\0'; 4448 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4449 (ssize_t)0, "Serial Number"); 4450 } 4451 4452 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4453 "Maximum I/O size allowed by driver and controller"); 4454 4455 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4456 "Maximum I/O size reported by controller"); 4457 4458 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4459 "Maximum block size supported by tape drive and media"); 4460 4461 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4462 "Minimum block size supported by tape drive and media"); 4463 4464 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4465 "Block granularity supported by tape drive and media"); 4466 4467 maxio_tmp = min(softc->max_blk, softc->maxio); 4468 4469 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4470 "Maximum possible I/O size"); 4471 4472 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4473 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4474 4475 /* 4476 * XXX KDM include SIM, bus, target, LUN? 4477 */ 4478 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4479 tmpint = 0; 4480 else 4481 tmpint = 1; 4482 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4483 "Set to 1 if compression is supported, 0 if not"); 4484 if (softc->flags & SA_FLAG_COMP_ENABLED) 4485 tmpint = 1; 4486 else 4487 tmpint = 0; 4488 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4489 "Set to 1 if compression is enabled, 0 if not"); 4490 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4491 compression_algorithm, "Numeric compression algorithm"); 4492 4493 safillprot(softc, &indent, sb); 4494 4495 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4496 media_blocksize, "Block size reported by drive or set by user"); 4497 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4498 calculated_fileno, "Calculated file number, -1 if unknown"); 4499 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4500 calculated_rel_blkno, "Calculated block number relative to file, " 4501 "set to -1 if unknown"); 4502 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4503 reported_fileno, "File number reported by drive, -1 if unknown"); 4504 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4505 reported_blkno, "Block number relative to BOP/BOT reported by " 4506 "drive, -1 if unknown"); 4507 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4508 partition, "Current partition number, 0 is the default"); 4509 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4510 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4511 "not, -1 if unknown"); 4512 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4513 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4514 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4515 "Set to 1 if drive is past programmable early warning, 0 if not, " 4516 "-1 if unknown"); 4517 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4518 residual, "Residual for the last I/O"); 4519 /* 4520 * XXX KDM should we send a string with the current driver 4521 * status already decoded instead of a numeric value? 4522 */ 4523 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4524 "Current state of the driver"); 4525 4526 safilldensitysb(softc, &indent, sb); 4527 4528 SASBENDNODE(sb, indent, mtextget); 4529 4530 extget_bailout: 4531 4532 return (error); 4533 } 4534 4535 static int 4536 saparamget(struct sa_softc *softc, struct sbuf *sb) 4537 { 4538 int indent; 4539 4540 indent = 0; 4541 SASBADDNODE(sb, indent, mtparamget); 4542 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4543 "Suppress an error on underlength variable reads"); 4544 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4545 "Return an error to warn that end of tape is approaching"); 4546 safillprot(softc, &indent, sb); 4547 SASBENDNODE(sb, indent, mtparamget); 4548 4549 return (0); 4550 } 4551 4552 static void 4553 saprevent(struct cam_periph *periph, int action) 4554 { 4555 struct sa_softc *softc; 4556 union ccb *ccb; 4557 int error, sf; 4558 4559 softc = (struct sa_softc *)periph->softc; 4560 4561 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4562 return; 4563 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4564 return; 4565 4566 /* 4567 * We can be quiet about illegal requests. 4568 */ 4569 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4570 sf = 0; 4571 } else 4572 sf = SF_QUIET_IR; 4573 4574 ccb = cam_periph_getccb(periph, 1); 4575 4576 /* It is safe to retry this operation */ 4577 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 4578 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4579 4580 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4581 if (error == 0) { 4582 if (action == PR_ALLOW) 4583 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4584 else 4585 softc->flags |= SA_FLAG_TAPE_LOCKED; 4586 } 4587 4588 xpt_release_ccb(ccb); 4589 } 4590 4591 static int 4592 sarewind(struct cam_periph *periph) 4593 { 4594 union ccb *ccb; 4595 struct sa_softc *softc; 4596 int error; 4597 4598 softc = (struct sa_softc *)periph->softc; 4599 4600 ccb = cam_periph_getccb(periph, 1); 4601 4602 /* It is safe to retry this operation */ 4603 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 4604 SSD_FULL_SIZE, REWIND_TIMEOUT); 4605 4606 softc->dsreg = MTIO_DSREG_REW; 4607 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4608 softc->dsreg = MTIO_DSREG_REST; 4609 4610 xpt_release_ccb(ccb); 4611 if (error == 0) { 4612 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4613 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4614 } else { 4615 softc->fileno = softc->blkno = (daddr_t) -1; 4616 softc->partition = (daddr_t) -1; 4617 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4618 } 4619 return (error); 4620 } 4621 4622 static int 4623 saspace(struct cam_periph *periph, int count, scsi_space_code code) 4624 { 4625 union ccb *ccb; 4626 struct sa_softc *softc; 4627 int error; 4628 4629 softc = (struct sa_softc *)periph->softc; 4630 4631 ccb = cam_periph_getccb(periph, 1); 4632 4633 /* This cannot be retried */ 4634 4635 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 4636 SSD_FULL_SIZE, SPACE_TIMEOUT); 4637 4638 /* 4639 * Clear residual because we will be using it. 4640 */ 4641 softc->last_ctl_resid = 0; 4642 4643 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4644 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4645 softc->dsreg = MTIO_DSREG_REST; 4646 4647 xpt_release_ccb(ccb); 4648 4649 /* 4650 * If a spacing operation has failed, we need to invalidate 4651 * this mount. 4652 * 4653 * If the spacing operation was setmarks or to end of recorded data, 4654 * we no longer know our relative position. 4655 * 4656 * If the spacing operations was spacing files in reverse, we 4657 * take account of the residual, but still check against less 4658 * than zero- if we've gone negative, we must have hit BOT. 4659 * 4660 * If the spacing operations was spacing records in reverse and 4661 * we have a residual, we've either hit BOT or hit a filemark. 4662 * In the former case, we know our new record number (0). In 4663 * the latter case, we have absolutely no idea what the real 4664 * record number is- we've stopped between the end of the last 4665 * record in the previous file and the filemark that stopped 4666 * our spacing backwards. 4667 */ 4668 if (error) { 4669 softc->fileno = softc->blkno = (daddr_t) -1; 4670 softc->rep_blkno = softc->partition = (daddr_t) -1; 4671 softc->rep_fileno = (daddr_t) -1; 4672 } else if (code == SS_SETMARKS || code == SS_EOD) { 4673 softc->fileno = softc->blkno = (daddr_t) -1; 4674 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4675 softc->fileno += (count - softc->last_ctl_resid); 4676 if (softc->fileno < 0) /* we must of hit BOT */ 4677 softc->fileno = 0; 4678 softc->blkno = 0; 4679 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4680 softc->blkno += (count - softc->last_ctl_resid); 4681 if (count < 0) { 4682 if (softc->last_ctl_resid || softc->blkno < 0) { 4683 if (softc->fileno == 0) { 4684 softc->blkno = 0; 4685 } else { 4686 softc->blkno = (daddr_t) -1; 4687 } 4688 } 4689 } 4690 } 4691 if (error == 0) 4692 sagetpos(periph); 4693 4694 return (error); 4695 } 4696 4697 static int 4698 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4699 { 4700 union ccb *ccb; 4701 struct sa_softc *softc; 4702 int error, nwm = 0; 4703 4704 softc = (struct sa_softc *)periph->softc; 4705 if (softc->open_rdonly) 4706 return (EBADF); 4707 4708 ccb = cam_periph_getccb(periph, 1); 4709 /* 4710 * Clear residual because we will be using it. 4711 */ 4712 softc->last_ctl_resid = 0; 4713 4714 softc->dsreg = MTIO_DSREG_FMK; 4715 /* this *must* not be retried */ 4716 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 4717 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4718 softc->dsreg = MTIO_DSREG_REST; 4719 4720 4721 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4722 4723 if (error == 0 && nmarks) { 4724 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4725 nwm = nmarks - softc->last_ctl_resid; 4726 softc->filemarks += nwm; 4727 } 4728 4729 xpt_release_ccb(ccb); 4730 4731 /* 4732 * Update relative positions (if we're doing that). 4733 */ 4734 if (error) { 4735 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4736 } else if (softc->fileno != (daddr_t) -1) { 4737 softc->fileno += nwm; 4738 softc->blkno = 0; 4739 } 4740 4741 /* 4742 * Ask the tape drive for position information. 4743 */ 4744 sagetpos(periph); 4745 4746 /* 4747 * If we got valid position information, since we just wrote a file 4748 * mark, we know we're at the file mark and block 0 after that 4749 * filemark. 4750 */ 4751 if (softc->rep_fileno != (daddr_t) -1) { 4752 softc->fileno = softc->rep_fileno; 4753 softc->blkno = 0; 4754 } 4755 4756 return (error); 4757 } 4758 4759 static int 4760 sagetpos(struct cam_periph *periph) 4761 { 4762 union ccb *ccb; 4763 struct scsi_tape_position_long_data long_pos; 4764 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4765 int error; 4766 4767 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4768 softc->rep_fileno = (daddr_t) -1; 4769 softc->rep_blkno = (daddr_t) -1; 4770 softc->bop = softc->eop = softc->bpew = -1; 4771 return (EOPNOTSUPP); 4772 } 4773 4774 bzero(&long_pos, sizeof(long_pos)); 4775 4776 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4777 scsi_read_position_10(&ccb->csio, 4778 /*retries*/ 1, 4779 /*cbfcnp*/ sadone, 4780 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4781 /*service_action*/ SA_RPOS_LONG_FORM, 4782 /*data_ptr*/ (uint8_t *)&long_pos, 4783 /*length*/ sizeof(long_pos), 4784 /*sense_len*/ SSD_FULL_SIZE, 4785 /*timeout*/ SCSIOP_TIMEOUT); 4786 4787 softc->dsreg = MTIO_DSREG_RBSY; 4788 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4789 softc->device_stats); 4790 softc->dsreg = MTIO_DSREG_REST; 4791 4792 if (error == 0) { 4793 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4794 /* 4795 * If the drive doesn't know what file mark it is 4796 * on, our calculated filemark isn't going to be 4797 * accurate either. 4798 */ 4799 softc->fileno = (daddr_t) -1; 4800 softc->rep_fileno = (daddr_t) -1; 4801 } else { 4802 softc->fileno = softc->rep_fileno = 4803 scsi_8btou64(long_pos.logical_file_num); 4804 } 4805 4806 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4807 softc->partition = (daddr_t) -1; 4808 softc->rep_blkno = (daddr_t) -1; 4809 /* 4810 * If the tape drive doesn't know its block 4811 * position, we can't claim to know it either. 4812 */ 4813 softc->blkno = (daddr_t) -1; 4814 } else { 4815 softc->partition = scsi_4btoul(long_pos.partition); 4816 softc->rep_blkno = 4817 scsi_8btou64(long_pos.logical_object_num); 4818 } 4819 if (long_pos.flags & SA_RPOS_LONG_BOP) 4820 softc->bop = 1; 4821 else 4822 softc->bop = 0; 4823 4824 if (long_pos.flags & SA_RPOS_LONG_EOP) 4825 softc->eop = 1; 4826 else 4827 softc->eop = 0; 4828 4829 if (long_pos.flags & SA_RPOS_LONG_BPEW) 4830 softc->bpew = 1; 4831 else 4832 softc->bpew = 0; 4833 } else if (error == EINVAL) { 4834 /* 4835 * If this drive returned an invalid-request type error, 4836 * then it likely doesn't support the long form report. 4837 */ 4838 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4839 } 4840 4841 if (error != 0) { 4842 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4843 softc->partition = (daddr_t) -1; 4844 softc->bop = softc->eop = softc->bpew = -1; 4845 } 4846 4847 xpt_release_ccb(ccb); 4848 4849 return (error); 4850 } 4851 4852 static int 4853 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4854 { 4855 struct scsi_tape_position_data loc; 4856 union ccb *ccb; 4857 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4858 int error; 4859 4860 /* 4861 * We try and flush any buffered writes here if we were writing 4862 * and we're trying to get hardware block position. It eats 4863 * up performance substantially, but I'm wary of drive firmware. 4864 * 4865 * I think that *logical* block position is probably okay- 4866 * but hardware block position might have to wait for data 4867 * to hit media to be valid. Caveat Emptor. 4868 */ 4869 4870 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4871 error = sawritefilemarks(periph, 0, 0, 0); 4872 if (error && error != EACCES) 4873 return (error); 4874 } 4875 4876 ccb = cam_periph_getccb(periph, 1); 4877 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 4878 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4879 softc->dsreg = MTIO_DSREG_RBSY; 4880 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4881 softc->dsreg = MTIO_DSREG_REST; 4882 4883 if (error == 0) { 4884 if (loc.flags & SA_RPOS_UNCERTAIN) { 4885 error = EINVAL; /* nothing is certain */ 4886 } else { 4887 *blkptr = scsi_4btoul(loc.firstblk); 4888 } 4889 } 4890 4891 xpt_release_ccb(ccb); 4892 return (error); 4893 } 4894 4895 static int 4896 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4897 { 4898 union ccb *ccb; 4899 struct sa_softc *softc; 4900 int locate16; 4901 int immed, cp; 4902 int error; 4903 4904 /* 4905 * We used to try and flush any buffered writes here. 4906 * Now we push this onto user applications to either 4907 * flush the pending writes themselves (via a zero count 4908 * WRITE FILEMARKS command) or they can trust their tape 4909 * drive to do this correctly for them. 4910 */ 4911 4912 softc = (struct sa_softc *)periph->softc; 4913 ccb = cam_periph_getccb(periph, 1); 4914 4915 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4916 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4917 4918 /* 4919 * Determine whether we have to use LOCATE or LOCATE16. The hard 4920 * bit is only possible with LOCATE, but the new ioctls do not 4921 * allow setting that bit. So we can't get into the situation of 4922 * having the hard bit set with a block address that is larger than 4923 * 32-bits. 4924 */ 4925 if (hard != 0) 4926 locate16 = 0; 4927 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4928 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4929 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4930 locate16 = 1; 4931 else 4932 locate16 = 0; 4933 4934 if (locate16 != 0) { 4935 scsi_locate_16(&ccb->csio, 4936 /*retries*/ 1, 4937 /*cbfcnp*/ sadone, 4938 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4939 /*immed*/ immed, 4940 /*cp*/ cp, 4941 /*dest_type*/ locate_info->dest_type, 4942 /*bam*/ locate_info->block_address_mode, 4943 /*partition*/ locate_info->partition, 4944 /*logical_id*/ locate_info->logical_id, 4945 /*sense_len*/ SSD_FULL_SIZE, 4946 /*timeout*/ SPACE_TIMEOUT); 4947 } else { 4948 uint32_t blk_pointer; 4949 4950 blk_pointer = locate_info->logical_id; 4951 4952 scsi_locate_10(&ccb->csio, 4953 /*retries*/ 1, 4954 /*cbfcnp*/ sadone, 4955 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4956 /*immed*/ immed, 4957 /*cp*/ cp, 4958 /*hard*/ hard, 4959 /*partition*/ locate_info->partition, 4960 /*block_address*/ locate_info->logical_id, 4961 /*sense_len*/ SSD_FULL_SIZE, 4962 /*timeout*/ SPACE_TIMEOUT); 4963 } 4964 4965 softc->dsreg = MTIO_DSREG_POS; 4966 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4967 softc->dsreg = MTIO_DSREG_REST; 4968 xpt_release_ccb(ccb); 4969 4970 /* 4971 * We assume the calculated file and block numbers are unknown 4972 * unless we have enough information to populate them. 4973 */ 4974 softc->fileno = softc->blkno = (daddr_t) -1; 4975 4976 /* 4977 * If the user requested changing the partition and the request 4978 * succeeded, note the partition. 4979 */ 4980 if ((error == 0) 4981 && (cp != 0)) 4982 softc->partition = locate_info->partition; 4983 else 4984 softc->partition = (daddr_t) -1; 4985 4986 if (error == 0) { 4987 switch (locate_info->dest_type) { 4988 case MT_LOCATE_DEST_FILE: 4989 /* 4990 * This is the only case where we can reliably 4991 * calculate the file and block numbers. 4992 */ 4993 softc->fileno = locate_info->logical_id; 4994 softc->blkno = 0; 4995 break; 4996 case MT_LOCATE_DEST_OBJECT: 4997 case MT_LOCATE_DEST_SET: 4998 case MT_LOCATE_DEST_EOD: 4999 default: 5000 break; 5001 } 5002 } 5003 5004 /* 5005 * Ask the drive for current position information. 5006 */ 5007 sagetpos(periph); 5008 5009 return (error); 5010 } 5011 5012 static int 5013 saretension(struct cam_periph *periph) 5014 { 5015 union ccb *ccb; 5016 struct sa_softc *softc; 5017 int error; 5018 5019 softc = (struct sa_softc *)periph->softc; 5020 5021 ccb = cam_periph_getccb(periph, 1); 5022 5023 /* It is safe to retry this operation */ 5024 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5025 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5026 5027 softc->dsreg = MTIO_DSREG_TEN; 5028 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5029 softc->dsreg = MTIO_DSREG_REST; 5030 5031 xpt_release_ccb(ccb); 5032 if (error == 0) { 5033 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5034 sagetpos(periph); 5035 } else 5036 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5037 return (error); 5038 } 5039 5040 static int 5041 sareservereleaseunit(struct cam_periph *periph, int reserve) 5042 { 5043 union ccb *ccb; 5044 struct sa_softc *softc; 5045 int error; 5046 5047 softc = (struct sa_softc *)periph->softc; 5048 ccb = cam_periph_getccb(periph, 1); 5049 5050 /* It is safe to retry this operation */ 5051 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 5052 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5053 softc->dsreg = MTIO_DSREG_RBSY; 5054 error = cam_periph_runccb(ccb, saerror, 0, 5055 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5056 softc->dsreg = MTIO_DSREG_REST; 5057 xpt_release_ccb(ccb); 5058 5059 /* 5060 * If the error was Illegal Request, then the device doesn't support 5061 * RESERVE/RELEASE. This is not an error. 5062 */ 5063 if (error == EINVAL) { 5064 error = 0; 5065 } 5066 5067 return (error); 5068 } 5069 5070 static int 5071 saloadunload(struct cam_periph *periph, int load) 5072 { 5073 union ccb *ccb; 5074 struct sa_softc *softc; 5075 int error; 5076 5077 softc = (struct sa_softc *)periph->softc; 5078 5079 ccb = cam_periph_getccb(periph, 1); 5080 5081 /* It is safe to retry this operation */ 5082 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5083 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5084 5085 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5086 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5087 softc->dsreg = MTIO_DSREG_REST; 5088 xpt_release_ccb(ccb); 5089 5090 if (error || load == 0) { 5091 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5092 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5093 } else if (error == 0) { 5094 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5095 sagetpos(periph); 5096 } 5097 return (error); 5098 } 5099 5100 static int 5101 saerase(struct cam_periph *periph, int longerase) 5102 { 5103 5104 union ccb *ccb; 5105 struct sa_softc *softc; 5106 int error; 5107 5108 softc = (struct sa_softc *)periph->softc; 5109 if (softc->open_rdonly) 5110 return (EBADF); 5111 5112 ccb = cam_periph_getccb(periph, 1); 5113 5114 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5115 SSD_FULL_SIZE, ERASE_TIMEOUT); 5116 5117 softc->dsreg = MTIO_DSREG_ZER; 5118 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5119 softc->dsreg = MTIO_DSREG_REST; 5120 5121 xpt_release_ccb(ccb); 5122 return (error); 5123 } 5124 5125 /* 5126 * Fill an sbuf with density data in XML format. This particular macro 5127 * works for multi-byte integer fields. 5128 * 5129 * Note that 1 byte fields aren't supported here. The reason is that the 5130 * compiler does not evaluate the sizeof(), and assumes that any of the 5131 * sizes are possible for a given field. So passing in a multi-byte 5132 * field will result in a warning that the assignment makes an integer 5133 * from a pointer without a cast, if there is an assignment in the 1 byte 5134 * case. 5135 */ 5136 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5137 len_to_go, cur_offset, desc){ \ 5138 size_t cur_field_len; \ 5139 \ 5140 cur_field_len = sizeof(dens_data->field); \ 5141 if (desc_remain < cur_field_len) { \ 5142 len_to_go -= desc_remain; \ 5143 cur_offset += desc_remain; \ 5144 continue; \ 5145 } \ 5146 len_to_go -= cur_field_len; \ 5147 cur_offset += cur_field_len; \ 5148 desc_remain -= cur_field_len; \ 5149 \ 5150 switch (sizeof(dens_data->field)) { \ 5151 case 1: \ 5152 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5153 "field width for SAFILLDENSFIELD")); \ 5154 break; \ 5155 case 2: \ 5156 SASBADDUINTDESC(sb, indent, \ 5157 scsi_2btoul(dens_data->field), %u, field, desc); \ 5158 break; \ 5159 case 3: \ 5160 SASBADDUINTDESC(sb, indent, \ 5161 scsi_3btoul(dens_data->field), %u, field, desc); \ 5162 break; \ 5163 case 4: \ 5164 SASBADDUINTDESC(sb, indent, \ 5165 scsi_4btoul(dens_data->field), %u, field, desc); \ 5166 break; \ 5167 case 8: \ 5168 SASBADDUINTDESC(sb, indent, \ 5169 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5170 field, desc); \ 5171 break; \ 5172 default: \ 5173 break; \ 5174 } \ 5175 }; 5176 /* 5177 * Fill an sbuf with density data in XML format. This particular macro 5178 * works for strings. 5179 */ 5180 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5181 len_to_go, cur_offset, desc){ \ 5182 size_t cur_field_len; \ 5183 char tmpstr[32]; \ 5184 \ 5185 cur_field_len = sizeof(dens_data->field); \ 5186 if (desc_remain < cur_field_len) { \ 5187 len_to_go -= desc_remain; \ 5188 cur_offset += desc_remain; \ 5189 continue; \ 5190 } \ 5191 len_to_go -= cur_field_len; \ 5192 cur_offset += cur_field_len; \ 5193 desc_remain -= cur_field_len; \ 5194 \ 5195 cam_strvis(tmpstr, dens_data->field, \ 5196 sizeof(dens_data->field), sizeof(tmpstr)); \ 5197 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5198 strlen(tmpstr) + 1, desc); \ 5199 }; 5200 5201 /* 5202 * Fill an sbuf with density data descriptors. 5203 */ 5204 static void 5205 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5206 int is_density) 5207 { 5208 struct scsi_density_hdr *hdr; 5209 uint32_t hdr_len; 5210 int len_to_go, cur_offset; 5211 int length_offset; 5212 int num_reports, need_close; 5213 5214 /* 5215 * We need at least the header length. Note that this isn't an 5216 * error, not all tape drives will have every data type. 5217 */ 5218 if (buf_len < sizeof(*hdr)) 5219 goto bailout; 5220 5221 5222 hdr = (struct scsi_density_hdr *)buf; 5223 hdr_len = scsi_2btoul(hdr->length); 5224 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5225 if (is_density) { 5226 length_offset = __offsetof(struct scsi_density_data, 5227 bits_per_mm); 5228 } else { 5229 length_offset = __offsetof(struct scsi_medium_type_data, 5230 num_density_codes); 5231 } 5232 cur_offset = sizeof(*hdr); 5233 5234 num_reports = 0; 5235 need_close = 0; 5236 5237 while (len_to_go > length_offset) { 5238 struct scsi_density_data *dens_data; 5239 struct scsi_medium_type_data *type_data; 5240 int desc_remain; 5241 size_t cur_field_len; 5242 5243 dens_data = NULL; 5244 type_data = NULL; 5245 5246 if (is_density) { 5247 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5248 if (dens_data->byte2 & SDD_DLV) 5249 desc_remain = scsi_2btoul(dens_data->length); 5250 else 5251 desc_remain = SDD_DEFAULT_LENGTH - 5252 length_offset; 5253 } else { 5254 type_data = (struct scsi_medium_type_data *) 5255 &buf[cur_offset]; 5256 desc_remain = scsi_2btoul(type_data->length); 5257 } 5258 5259 len_to_go -= length_offset; 5260 desc_remain = min(desc_remain, len_to_go); 5261 cur_offset += length_offset; 5262 5263 if (need_close != 0) { 5264 SASBENDNODE(sb, *indent, density_entry); 5265 } 5266 5267 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5268 num_reports++; 5269 need_close = 1; 5270 5271 if (is_density) { 5272 SASBADDUINTDESC(sb, *indent, 5273 dens_data->primary_density_code, %u, 5274 primary_density_code, "Primary Density Code"); 5275 SASBADDUINTDESC(sb, *indent, 5276 dens_data->secondary_density_code, %u, 5277 secondary_density_code, "Secondary Density Code"); 5278 SASBADDUINTDESC(sb, *indent, 5279 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5280 "Density Flags"); 5281 5282 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5283 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5284 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5285 desc_remain, len_to_go, cur_offset, "Media width"); 5286 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5287 desc_remain, len_to_go, cur_offset, 5288 "Number of Tracks"); 5289 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5290 desc_remain, len_to_go, cur_offset, "Capacity"); 5291 5292 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5293 desc_remain, len_to_go, cur_offset, 5294 "Assigning Organization"); 5295 5296 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5297 desc_remain, len_to_go, cur_offset, "Density Name"); 5298 5299 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5300 desc_remain, len_to_go, cur_offset, "Description"); 5301 } else { 5302 int i; 5303 5304 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5305 %u, medium_type, "Medium Type"); 5306 5307 cur_field_len = 5308 __offsetof(struct scsi_medium_type_data, 5309 media_width) - 5310 __offsetof(struct scsi_medium_type_data, 5311 num_density_codes); 5312 5313 if (desc_remain < cur_field_len) { 5314 len_to_go -= desc_remain; 5315 cur_offset += desc_remain; 5316 continue; 5317 } 5318 len_to_go -= cur_field_len; 5319 cur_offset += cur_field_len; 5320 desc_remain -= cur_field_len; 5321 5322 SASBADDINTDESC(sb, *indent, 5323 type_data->num_density_codes, %d, 5324 num_density_codes, "Number of Density Codes"); 5325 SASBADDNODE(sb, *indent, density_code_list); 5326 for (i = 0; i < type_data->num_density_codes; 5327 i++) { 5328 SASBADDUINTDESC(sb, *indent, 5329 type_data->primary_density_codes[i], %u, 5330 density_code, "Density Code"); 5331 } 5332 SASBENDNODE(sb, *indent, density_code_list); 5333 5334 SAFILLDENSSB(type_data, sb, *indent, media_width, 5335 desc_remain, len_to_go, cur_offset, 5336 "Media width"); 5337 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5338 desc_remain, len_to_go, cur_offset, 5339 "Medium length"); 5340 5341 /* 5342 * Account for the two reserved bytes. 5343 */ 5344 cur_field_len = sizeof(type_data->reserved2); 5345 if (desc_remain < cur_field_len) { 5346 len_to_go -= desc_remain; 5347 cur_offset += desc_remain; 5348 continue; 5349 } 5350 len_to_go -= cur_field_len; 5351 cur_offset += cur_field_len; 5352 desc_remain -= cur_field_len; 5353 5354 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5355 desc_remain, len_to_go, cur_offset, 5356 "Assigning Organization"); 5357 SAFILLDENSSBSTR(type_data, sb, *indent, 5358 medium_type_name, desc_remain, len_to_go, 5359 cur_offset, "Medium type name"); 5360 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5361 desc_remain, len_to_go, cur_offset, "Description"); 5362 5363 } 5364 } 5365 if (need_close != 0) { 5366 SASBENDNODE(sb, *indent, density_entry); 5367 } 5368 5369 bailout: 5370 return; 5371 } 5372 5373 /* 5374 * Fill an sbuf with density data information 5375 */ 5376 static void 5377 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5378 { 5379 int i, is_density; 5380 5381 SASBADDNODE(sb, *indent, mtdensity); 5382 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5383 "Current Medium Density"); 5384 is_density = 0; 5385 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5386 int tmpint; 5387 5388 if (softc->density_info_valid[i] == 0) 5389 continue; 5390 5391 SASBADDNODE(sb, *indent, density_report); 5392 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5393 tmpint = 1; 5394 is_density = 0; 5395 } else { 5396 tmpint = 0; 5397 is_density = 1; 5398 } 5399 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5400 "Medium type report"); 5401 5402 if (softc->density_type_bits[i] & SRDS_MEDIA) 5403 tmpint = 1; 5404 else 5405 tmpint = 0; 5406 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5407 "Media report"); 5408 5409 safilldenstypesb(sb, indent, softc->density_info[i], 5410 softc->density_info_valid[i], is_density); 5411 SASBENDNODE(sb, *indent, density_report); 5412 } 5413 SASBENDNODE(sb, *indent, mtdensity); 5414 } 5415 5416 #endif /* _KERNEL */ 5417 5418 /* 5419 * Read tape block limits command. 5420 */ 5421 void 5422 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5423 void (*cbfcnp)(struct cam_periph *, union ccb *), 5424 u_int8_t tag_action, 5425 struct scsi_read_block_limits_data *rlimit_buf, 5426 u_int8_t sense_len, u_int32_t timeout) 5427 { 5428 struct scsi_read_block_limits *scsi_cmd; 5429 5430 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5431 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5432 sizeof(*scsi_cmd), timeout); 5433 5434 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5435 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5436 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5437 } 5438 5439 void 5440 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5441 void (*cbfcnp)(struct cam_periph *, union ccb *), 5442 u_int8_t tag_action, int readop, int sli, 5443 int fixed, u_int32_t length, u_int8_t *data_ptr, 5444 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5445 { 5446 struct scsi_sa_rw *scsi_cmd; 5447 int read; 5448 5449 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5450 5451 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5452 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5453 scsi_cmd->sli_fixed = 0; 5454 if (sli && read) 5455 scsi_cmd->sli_fixed |= SAR_SLI; 5456 if (fixed) 5457 scsi_cmd->sli_fixed |= SARW_FIXED; 5458 scsi_ulto3b(length, scsi_cmd->length); 5459 scsi_cmd->control = 0; 5460 5461 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5462 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5463 tag_action, data_ptr, dxfer_len, sense_len, 5464 sizeof(*scsi_cmd), timeout); 5465 } 5466 5467 void 5468 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5469 void (*cbfcnp)(struct cam_periph *, union ccb *), 5470 u_int8_t tag_action, int immediate, int eot, 5471 int reten, int load, u_int8_t sense_len, 5472 u_int32_t timeout) 5473 { 5474 struct scsi_load_unload *scsi_cmd; 5475 5476 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5477 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5478 scsi_cmd->opcode = LOAD_UNLOAD; 5479 if (immediate) 5480 scsi_cmd->immediate = SLU_IMMED; 5481 if (eot) 5482 scsi_cmd->eot_reten_load |= SLU_EOT; 5483 if (reten) 5484 scsi_cmd->eot_reten_load |= SLU_RETEN; 5485 if (load) 5486 scsi_cmd->eot_reten_load |= SLU_LOAD; 5487 5488 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5489 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5490 } 5491 5492 void 5493 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5494 void (*cbfcnp)(struct cam_periph *, union ccb *), 5495 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5496 u_int32_t timeout) 5497 { 5498 struct scsi_rewind *scsi_cmd; 5499 5500 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5501 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5502 scsi_cmd->opcode = REWIND; 5503 if (immediate) 5504 scsi_cmd->immediate = SREW_IMMED; 5505 5506 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5507 0, sense_len, sizeof(*scsi_cmd), timeout); 5508 } 5509 5510 void 5511 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5512 void (*cbfcnp)(struct cam_periph *, union ccb *), 5513 u_int8_t tag_action, scsi_space_code code, 5514 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5515 { 5516 struct scsi_space *scsi_cmd; 5517 5518 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5519 scsi_cmd->opcode = SPACE; 5520 scsi_cmd->code = code; 5521 scsi_ulto3b(count, scsi_cmd->count); 5522 scsi_cmd->control = 0; 5523 5524 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5525 0, sense_len, sizeof(*scsi_cmd), timeout); 5526 } 5527 5528 void 5529 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5530 void (*cbfcnp)(struct cam_periph *, union ccb *), 5531 u_int8_t tag_action, int immediate, int setmark, 5532 u_int32_t num_marks, u_int8_t sense_len, 5533 u_int32_t timeout) 5534 { 5535 struct scsi_write_filemarks *scsi_cmd; 5536 5537 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5538 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5539 scsi_cmd->opcode = WRITE_FILEMARKS; 5540 if (immediate) 5541 scsi_cmd->byte2 |= SWFMRK_IMMED; 5542 if (setmark) 5543 scsi_cmd->byte2 |= SWFMRK_WSMK; 5544 5545 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5546 5547 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5548 0, sense_len, sizeof(*scsi_cmd), timeout); 5549 } 5550 5551 /* 5552 * The reserve and release unit commands differ only by their opcodes. 5553 */ 5554 void 5555 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5556 void (*cbfcnp)(struct cam_periph *, union ccb *), 5557 u_int8_t tag_action, int third_party, 5558 int third_party_id, u_int8_t sense_len, 5559 u_int32_t timeout, int reserve) 5560 { 5561 struct scsi_reserve_release_unit *scsi_cmd; 5562 5563 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5564 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5565 5566 if (reserve) 5567 scsi_cmd->opcode = RESERVE_UNIT; 5568 else 5569 scsi_cmd->opcode = RELEASE_UNIT; 5570 5571 if (third_party) { 5572 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5573 scsi_cmd->lun_thirdparty |= 5574 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5575 } 5576 5577 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5578 0, sense_len, sizeof(*scsi_cmd), timeout); 5579 } 5580 5581 void 5582 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5583 void (*cbfcnp)(struct cam_periph *, union ccb *), 5584 u_int8_t tag_action, int immediate, int long_erase, 5585 u_int8_t sense_len, u_int32_t timeout) 5586 { 5587 struct scsi_erase *scsi_cmd; 5588 5589 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5590 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5591 5592 scsi_cmd->opcode = ERASE; 5593 5594 if (immediate) 5595 scsi_cmd->lun_imm_long |= SE_IMMED; 5596 5597 if (long_erase) 5598 scsi_cmd->lun_imm_long |= SE_LONG; 5599 5600 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5601 0, sense_len, sizeof(*scsi_cmd), timeout); 5602 } 5603 5604 /* 5605 * Read Tape Position command. 5606 */ 5607 void 5608 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5609 void (*cbfcnp)(struct cam_periph *, union ccb *), 5610 u_int8_t tag_action, int hardsoft, 5611 struct scsi_tape_position_data *sbp, 5612 u_int8_t sense_len, u_int32_t timeout) 5613 { 5614 struct scsi_tape_read_position *scmd; 5615 5616 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5617 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5618 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5619 bzero(scmd, sizeof(*scmd)); 5620 scmd->opcode = READ_POSITION; 5621 scmd->byte1 = hardsoft; 5622 } 5623 5624 /* 5625 * Read Tape Position command. 5626 */ 5627 void 5628 scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5629 void (*cbfcnp)(struct cam_periph *, union ccb *), 5630 u_int8_t tag_action, int service_action, 5631 u_int8_t *data_ptr, u_int32_t length, 5632 u_int32_t sense_len, u_int32_t timeout) 5633 { 5634 struct scsi_tape_read_position *scmd; 5635 5636 cam_fill_csio(csio, 5637 retries, 5638 cbfcnp, 5639 /*flags*/CAM_DIR_IN, 5640 tag_action, 5641 /*data_ptr*/data_ptr, 5642 /*dxfer_len*/length, 5643 sense_len, 5644 sizeof(*scmd), 5645 timeout); 5646 5647 5648 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5649 bzero(scmd, sizeof(*scmd)); 5650 scmd->opcode = READ_POSITION; 5651 scmd->byte1 = service_action; 5652 /* 5653 * The length is only currently set (as of SSC4r03) if the extended 5654 * form is specified. The other forms have fixed lengths. 5655 */ 5656 if (service_action == SA_RPOS_EXTENDED_FORM) 5657 scsi_ulto2b(length, scmd->length); 5658 } 5659 5660 /* 5661 * Set Tape Position command. 5662 */ 5663 void 5664 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5665 void (*cbfcnp)(struct cam_periph *, union ccb *), 5666 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5667 u_int8_t sense_len, u_int32_t timeout) 5668 { 5669 struct scsi_tape_locate *scmd; 5670 5671 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5672 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5673 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5674 bzero(scmd, sizeof(*scmd)); 5675 scmd->opcode = LOCATE; 5676 if (hardsoft) 5677 scmd->byte1 |= SA_SPOS_BT; 5678 scsi_ulto4b(blkno, scmd->blkaddr); 5679 } 5680 5681 /* 5682 * XXX KDM figure out how to make a compatibility function. 5683 */ 5684 void 5685 scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5686 void (*cbfcnp)(struct cam_periph *, union ccb *), 5687 u_int8_t tag_action, int immed, int cp, int hard, 5688 int64_t partition, u_int32_t block_address, 5689 int sense_len, u_int32_t timeout) 5690 { 5691 struct scsi_tape_locate *scmd; 5692 5693 cam_fill_csio(csio, 5694 retries, 5695 cbfcnp, 5696 CAM_DIR_NONE, 5697 tag_action, 5698 /*data_ptr*/ NULL, 5699 /*dxfer_len*/ 0, 5700 sense_len, 5701 sizeof(*scmd), 5702 timeout); 5703 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5704 bzero(scmd, sizeof(*scmd)); 5705 scmd->opcode = LOCATE; 5706 if (immed) 5707 scmd->byte1 |= SA_SPOS_IMMED; 5708 if (cp) 5709 scmd->byte1 |= SA_SPOS_CP; 5710 if (hard) 5711 scmd->byte1 |= SA_SPOS_BT; 5712 scsi_ulto4b(block_address, scmd->blkaddr); 5713 scmd->partition = partition; 5714 } 5715 5716 void 5717 scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5718 void (*cbfcnp)(struct cam_periph *, union ccb *), 5719 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5720 int bam, int64_t partition, u_int64_t logical_id, 5721 int sense_len, u_int32_t timeout) 5722 { 5723 5724 struct scsi_locate_16 *scsi_cmd; 5725 5726 cam_fill_csio(csio, 5727 retries, 5728 cbfcnp, 5729 /*flags*/CAM_DIR_NONE, 5730 tag_action, 5731 /*data_ptr*/NULL, 5732 /*dxfer_len*/0, 5733 sense_len, 5734 sizeof(*scsi_cmd), 5735 timeout); 5736 5737 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5738 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5739 scsi_cmd->opcode = LOCATE_16; 5740 if (immed) 5741 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5742 if (cp) 5743 scsi_cmd->byte1 |= SA_LC_CP; 5744 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5745 5746 scsi_cmd->byte2 |= bam; 5747 scsi_cmd->partition = partition; 5748 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5749 } 5750 5751 void 5752 scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5753 void (*cbfcnp)(struct cam_periph *, union ccb *), 5754 u_int8_t tag_action, int media, int medium_type, 5755 u_int8_t *data_ptr, u_int32_t length, 5756 u_int32_t sense_len, u_int32_t timeout) 5757 { 5758 struct scsi_report_density_support *scsi_cmd; 5759 5760 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5761 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5762 5763 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5764 if (media != 0) 5765 scsi_cmd->byte1 |= SRDS_MEDIA; 5766 if (medium_type != 0) 5767 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5768 5769 scsi_ulto2b(length, scsi_cmd->length); 5770 5771 cam_fill_csio(csio, 5772 retries, 5773 cbfcnp, 5774 /*flags*/CAM_DIR_IN, 5775 tag_action, 5776 /*data_ptr*/data_ptr, 5777 /*dxfer_len*/length, 5778 sense_len, 5779 sizeof(*scsi_cmd), 5780 timeout); 5781 } 5782 5783 void 5784 scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5785 void (*cbfcnp)(struct cam_periph *, union ccb *), 5786 u_int8_t tag_action, int byte1, u_int32_t proportion, 5787 u_int32_t sense_len, u_int32_t timeout) 5788 { 5789 struct scsi_set_capacity *scsi_cmd; 5790 5791 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5792 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5793 5794 scsi_cmd->opcode = SET_CAPACITY; 5795 5796 scsi_cmd->byte1 = byte1; 5797 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5798 5799 cam_fill_csio(csio, 5800 retries, 5801 cbfcnp, 5802 /*flags*/CAM_DIR_NONE, 5803 tag_action, 5804 /*data_ptr*/NULL, 5805 /*dxfer_len*/0, 5806 sense_len, 5807 sizeof(*scsi_cmd), 5808 timeout); 5809 } 5810 5811 void 5812 scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5813 void (*cbfcnp)(struct cam_periph *, union ccb *), 5814 u_int8_t tag_action, int byte1, int byte2, 5815 u_int8_t *data_ptr, u_int32_t dxfer_len, 5816 u_int32_t sense_len, u_int32_t timeout) 5817 { 5818 struct scsi_format_medium *scsi_cmd; 5819 5820 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5821 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5822 5823 scsi_cmd->opcode = FORMAT_MEDIUM; 5824 5825 scsi_cmd->byte1 = byte1; 5826 scsi_cmd->byte2 = byte2; 5827 5828 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5829 5830 cam_fill_csio(csio, 5831 retries, 5832 cbfcnp, 5833 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5834 tag_action, 5835 /*data_ptr*/ data_ptr, 5836 /*dxfer_len*/ dxfer_len, 5837 sense_len, 5838 sizeof(*scsi_cmd), 5839 timeout); 5840 } 5841 5842 void 5843 scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5844 void (*cbfcnp)(struct cam_periph *, union ccb *), 5845 u_int8_t tag_action, int allow_overwrite, int partition, 5846 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5847 { 5848 struct scsi_allow_overwrite *scsi_cmd; 5849 5850 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5851 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5852 5853 scsi_cmd->opcode = ALLOW_OVERWRITE; 5854 5855 scsi_cmd->allow_overwrite = allow_overwrite; 5856 scsi_cmd->partition = partition; 5857 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5858 5859 cam_fill_csio(csio, 5860 retries, 5861 cbfcnp, 5862 CAM_DIR_NONE, 5863 tag_action, 5864 /*data_ptr*/ NULL, 5865 /*dxfer_len*/ 0, 5866 sense_len, 5867 sizeof(*scsi_cmd), 5868 timeout); 5869 } 5870