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