1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * Copyright (c) 2013, 2014, 2015 Spectra Logic Corporation 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/param.h> 36 #include <sys/queue.h> 37 #ifdef _KERNEL 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #endif 41 #include <sys/types.h> 42 #include <sys/time.h> 43 #include <sys/bio.h> 44 #include <sys/limits.h> 45 #include <sys/malloc.h> 46 #include <sys/mtio.h> 47 #ifdef _KERNEL 48 #include <sys/conf.h> 49 #include <sys/sbuf.h> 50 #include <sys/sysctl.h> 51 #include <sys/taskqueue.h> 52 #endif 53 #include <sys/fcntl.h> 54 #include <sys/devicestat.h> 55 56 #ifndef _KERNEL 57 #include <stdio.h> 58 #include <string.h> 59 #endif 60 61 #include <cam/cam.h> 62 #include <cam/cam_ccb.h> 63 #include <cam/cam_periph.h> 64 #include <cam/cam_xpt_periph.h> 65 #include <cam/cam_debug.h> 66 67 #include <cam/scsi/scsi_all.h> 68 #include <cam/scsi/scsi_message.h> 69 #include <cam/scsi/scsi_sa.h> 70 71 #ifdef _KERNEL 72 73 #include "opt_sa.h" 74 75 #ifndef SA_IO_TIMEOUT 76 #define SA_IO_TIMEOUT 32 77 #endif 78 #ifndef SA_SPACE_TIMEOUT 79 #define SA_SPACE_TIMEOUT 1 * 60 80 #endif 81 #ifndef SA_REWIND_TIMEOUT 82 #define SA_REWIND_TIMEOUT 2 * 60 83 #endif 84 #ifndef SA_ERASE_TIMEOUT 85 #define SA_ERASE_TIMEOUT 4 * 60 86 #endif 87 #ifndef SA_REP_DENSITY_TIMEOUT 88 #define SA_REP_DENSITY_TIMEOUT 90 89 #endif 90 91 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 92 93 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 94 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 95 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 96 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 97 #define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000) 98 99 /* 100 * Additional options that can be set for config: SA_1FM_AT_EOT 101 */ 102 103 #ifndef UNUSED_PARAMETER 104 #define UNUSED_PARAMETER(x) x = x 105 #endif 106 107 #define QFRLS(ccb) \ 108 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 109 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 110 111 /* 112 * Driver states 113 */ 114 115 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 116 117 typedef enum { 118 SA_STATE_NORMAL, SA_STATE_ABNORMAL 119 } sa_state; 120 121 #define ccb_pflags ppriv_field0 122 #define ccb_bp ppriv_ptr1 123 124 /* bits in ccb_pflags */ 125 #define SA_POSITION_UPDATED 0x1 126 127 typedef enum { 128 SA_FLAG_OPEN = 0x0001, 129 SA_FLAG_FIXED = 0x0002, 130 SA_FLAG_TAPE_LOCKED = 0x0004, 131 SA_FLAG_TAPE_MOUNTED = 0x0008, 132 SA_FLAG_TAPE_WP = 0x0010, 133 SA_FLAG_TAPE_WRITTEN = 0x0020, 134 SA_FLAG_EOM_PENDING = 0x0040, 135 SA_FLAG_EIO_PENDING = 0x0080, 136 SA_FLAG_EOF_PENDING = 0x0100, 137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 138 SA_FLAG_EOF_PENDING), 139 SA_FLAG_INVALID = 0x0200, 140 SA_FLAG_COMP_ENABLED = 0x0400, 141 SA_FLAG_COMP_SUPP = 0x0800, 142 SA_FLAG_COMP_UNSUPP = 0x1000, 143 SA_FLAG_TAPE_FROZEN = 0x2000, 144 SA_FLAG_PROTECT_SUPP = 0x4000, 145 146 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 147 SA_FLAG_COMP_UNSUPP), 148 SA_FLAG_SCTX_INIT = 0x8000 149 } sa_flags; 150 151 typedef enum { 152 SA_MODE_REWIND = 0x00, 153 SA_MODE_NOREWIND = 0x01, 154 SA_MODE_OFFLINE = 0x02 155 } sa_mode; 156 157 typedef enum { 158 SA_PARAM_NONE = 0x000, 159 SA_PARAM_BLOCKSIZE = 0x001, 160 SA_PARAM_DENSITY = 0x002, 161 SA_PARAM_COMPRESSION = 0x004, 162 SA_PARAM_BUFF_MODE = 0x008, 163 SA_PARAM_NUMBLOCKS = 0x010, 164 SA_PARAM_WP = 0x020, 165 SA_PARAM_SPEED = 0x040, 166 SA_PARAM_DENSITY_EXT = 0x080, 167 SA_PARAM_LBP = 0x100, 168 SA_PARAM_ALL = 0x1ff 169 } sa_params; 170 171 typedef enum { 172 SA_QUIRK_NONE = 0x000, 173 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 174 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 175 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 176 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 177 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 178 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 179 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 180 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 181 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 182 } sa_quirks; 183 184 #define SA_QUIRK_BIT_STRING \ 185 "\020" \ 186 "\001NOCOMP" \ 187 "\002FIXED" \ 188 "\003VARIABLE" \ 189 "\0042FM" \ 190 "\0051FM" \ 191 "\006NODREAD" \ 192 "\007NO_MODESEL" \ 193 "\010NO_CPAGE" \ 194 "\011NO_LONG_POS" 195 196 #define SAMODE(z) (dev2unit(z) & 0x3) 197 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 198 199 #define SA_NOT_CTLDEV 0 200 #define SA_CTLDEV 1 201 202 #define SA_ATYPE_R 0 203 #define SA_ATYPE_NR 1 204 #define SA_ATYPE_ER 2 205 #define SA_NUM_ATYPES 3 206 207 #define SAMINOR(ctl, access) \ 208 ((ctl << 4) | (access & 0x3)) 209 210 struct sa_devs { 211 struct cdev *ctl_dev; 212 struct cdev *r_dev; 213 struct cdev *nr_dev; 214 struct cdev *er_dev; 215 }; 216 217 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 218 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 219 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 220 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 221 222 #define SASBADDINT(sb, indent, data, fmt, name) \ 223 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 224 NULL) 225 226 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 227 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 228 desc) 229 230 #define SASBADDUINT(sb, indent, data, fmt, name) \ 231 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 232 NULL) 233 234 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 235 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 236 desc) 237 238 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 239 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 240 NULL) 241 242 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 243 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 244 desc) 245 246 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 247 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 248 249 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 250 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 251 252 #define SASBADDNODE(sb, indent, name) { \ 253 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 254 "node"); \ 255 indent += 2; \ 256 } 257 258 #define SASBADDNODENUM(sb, indent, name, num) { \ 259 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 260 #name, "node", num); \ 261 indent += 2; \ 262 } 263 264 #define SASBENDNODE(sb, indent, name) { \ 265 indent -= 2; \ 266 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 267 } 268 269 #define SA_DENSITY_TYPES 4 270 271 struct sa_prot_state { 272 int initialized; 273 uint32_t prot_method; 274 uint32_t pi_length; 275 uint32_t lbp_w; 276 uint32_t lbp_r; 277 uint32_t rbdp; 278 }; 279 280 struct sa_prot_info { 281 struct sa_prot_state cur_prot_state; 282 struct sa_prot_state pending_prot_state; 283 }; 284 285 /* 286 * A table mapping protection parameters to their types and values. 287 */ 288 struct sa_prot_map { 289 char *name; 290 mt_param_set_type param_type; 291 off_t offset; 292 uint32_t min_val; 293 uint32_t max_val; 294 uint32_t *value; 295 } sa_prot_table[] = { 296 { "prot_method", MT_PARAM_SET_UNSIGNED, 297 __offsetof(struct sa_prot_state, prot_method), 298 /*min_val*/ 0, /*max_val*/ 255, NULL }, 299 { "pi_length", MT_PARAM_SET_UNSIGNED, 300 __offsetof(struct sa_prot_state, pi_length), 301 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 302 { "lbp_w", MT_PARAM_SET_UNSIGNED, 303 __offsetof(struct sa_prot_state, lbp_w), 304 /*min_val*/ 0, /*max_val*/ 1, NULL }, 305 { "lbp_r", MT_PARAM_SET_UNSIGNED, 306 __offsetof(struct sa_prot_state, lbp_r), 307 /*min_val*/ 0, /*max_val*/ 1, NULL }, 308 { "rbdp", MT_PARAM_SET_UNSIGNED, 309 __offsetof(struct sa_prot_state, rbdp), 310 /*min_val*/ 0, /*max_val*/ 1, NULL } 311 }; 312 313 #define SA_NUM_PROT_ENTS nitems(sa_prot_table) 314 315 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 316 && (softc->prot_info.cur_prot_state.initialized != 0) \ 317 && (softc->prot_info.cur_prot_state.prot_method != 0)) 318 319 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 320 321 struct sa_softc { 322 sa_state state; 323 sa_flags flags; 324 sa_quirks quirks; 325 u_int si_flags; 326 struct cam_periph *periph; 327 struct bio_queue_head bio_queue; 328 int queue_count; 329 struct devstat *device_stats; 330 struct sa_devs devs; 331 int open_count; 332 int num_devs_to_destroy; 333 int blk_gran; 334 int blk_mask; 335 int blk_shift; 336 u_int32_t max_blk; 337 u_int32_t min_blk; 338 u_int32_t maxio; 339 u_int32_t cpi_maxio; 340 int allow_io_split; 341 int inject_eom; 342 int set_pews_status; 343 u_int32_t comp_algorithm; 344 u_int32_t saved_comp_algorithm; 345 u_int32_t media_blksize; 346 u_int32_t last_media_blksize; 347 u_int32_t media_numblks; 348 u_int8_t media_density; 349 u_int8_t speed; 350 u_int8_t scsi_rev; 351 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 352 int buffer_mode; 353 int filemarks; 354 int last_resid_was_io; 355 uint8_t density_type_bits[SA_DENSITY_TYPES]; 356 int density_info_valid[SA_DENSITY_TYPES]; 357 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 358 359 struct sa_prot_info prot_info; 360 361 int sili; 362 int eot_warn; 363 364 /* 365 * Current position information. -1 means that the given value is 366 * unknown. fileno and blkno are always calculated. blkno is 367 * relative to the previous file mark. rep_fileno and rep_blkno 368 * are as reported by the drive, if it supports the long form 369 * report for the READ POSITION command. rep_blkno is relative to 370 * the beginning of the partition. 371 * 372 * bop means that the drive is at the beginning of the partition. 373 * eop means that the drive is between early warning and end of 374 * partition, inside the current partition. 375 * bpew means that the position is in a PEWZ (Programmable Early 376 * Warning Zone) 377 */ 378 daddr_t partition; /* Absolute from BOT */ 379 daddr_t fileno; /* Relative to beginning of partition */ 380 daddr_t blkno; /* Relative to last file mark */ 381 daddr_t rep_blkno; /* Relative to beginning of partition */ 382 daddr_t rep_fileno; /* Relative to beginning of partition */ 383 int bop; /* Beginning of Partition */ 384 int eop; /* End of Partition */ 385 int bpew; /* Beyond Programmable Early Warning */ 386 387 /* 388 * Latched Error Info 389 */ 390 struct { 391 struct scsi_sense_data _last_io_sense; 392 u_int64_t _last_io_resid; 393 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 394 struct scsi_sense_data _last_ctl_sense; 395 u_int64_t _last_ctl_resid; 396 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 397 #define last_io_sense errinfo._last_io_sense 398 #define last_io_resid errinfo._last_io_resid 399 #define last_io_cdb errinfo._last_io_cdb 400 #define last_ctl_sense errinfo._last_ctl_sense 401 #define last_ctl_resid errinfo._last_ctl_resid 402 #define last_ctl_cdb errinfo._last_ctl_cdb 403 } errinfo; 404 /* 405 * Misc other flags/state 406 */ 407 u_int32_t 408 : 29, 409 open_rdonly : 1, /* open read-only */ 410 open_pending_mount : 1, /* open pending mount */ 411 ctrl_mode : 1; /* control device open */ 412 413 struct task sysctl_task; 414 struct sysctl_ctx_list sysctl_ctx; 415 struct sysctl_oid *sysctl_tree; 416 }; 417 418 struct sa_quirk_entry { 419 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 420 sa_quirks quirks; /* specific quirk type */ 421 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 422 }; 423 424 static struct sa_quirk_entry sa_quirk_table[] = 425 { 426 { 427 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 428 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 429 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 430 }, 431 { 432 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 433 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 434 }, 435 { 436 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 437 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 438 }, 439 { 440 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 441 "Python*", "*"}, SA_QUIRK_NODREAD, 0 442 }, 443 { 444 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 445 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 446 }, 447 { 448 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 449 "VIPER 2525 25462", "-011"}, 450 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 451 }, 452 { 453 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 454 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 455 }, 456 #if 0 457 { 458 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 459 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 460 }, 461 #endif 462 { 463 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 464 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 465 }, 466 { 467 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 468 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 469 }, 470 { 471 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 472 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 473 }, 474 { 475 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 476 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 477 }, 478 { 479 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 480 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 481 }, 482 { 483 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 484 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 485 }, 486 { /* jreynold@primenet.com */ 487 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 488 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 489 }, 490 { /* mike@sentex.net */ 491 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 492 "STT20000*", "*"}, SA_QUIRK_1FM, 0 493 }, 494 { 495 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 496 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 497 }, 498 { 499 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 500 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 501 }, 502 { 503 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 504 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 505 }, 506 { 507 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 508 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 509 }, 510 { 511 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 512 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 513 }, 514 { 515 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 516 " SLR*", "*"}, SA_QUIRK_1FM, 0 517 }, 518 { 519 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 520 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 521 }, 522 { 523 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 524 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 525 } 526 }; 527 528 static d_open_t saopen; 529 static d_close_t saclose; 530 static d_strategy_t sastrategy; 531 static d_ioctl_t saioctl; 532 static periph_init_t sainit; 533 static periph_ctor_t saregister; 534 static periph_oninv_t saoninvalidate; 535 static periph_dtor_t sacleanup; 536 static periph_start_t sastart; 537 static void saasync(void *callback_arg, u_int32_t code, 538 struct cam_path *path, void *arg); 539 static void sadone(struct cam_periph *periph, 540 union ccb *start_ccb); 541 static int saerror(union ccb *ccb, u_int32_t cam_flags, 542 u_int32_t sense_flags); 543 static int samarkswanted(struct cam_periph *); 544 static int sacheckeod(struct cam_periph *periph); 545 static int sagetparams(struct cam_periph *periph, 546 sa_params params_to_get, 547 u_int32_t *blocksize, u_int8_t *density, 548 u_int32_t *numblocks, int *buff_mode, 549 u_int8_t *write_protect, u_int8_t *speed, 550 int *comp_supported, int *comp_enabled, 551 u_int32_t *comp_algorithm, 552 sa_comp_t *comp_page, 553 struct scsi_control_data_prot_subpage 554 *prot_page, int dp_size, 555 int prot_changeable); 556 static int sasetprot(struct cam_periph *periph, 557 struct sa_prot_state *new_prot); 558 static int sasetparams(struct cam_periph *periph, 559 sa_params params_to_set, 560 u_int32_t blocksize, u_int8_t density, 561 u_int32_t comp_algorithm, 562 u_int32_t sense_flags); 563 static int sasetsili(struct cam_periph *periph, 564 struct mtparamset *ps, int num_params); 565 static int saseteotwarn(struct cam_periph *periph, 566 struct mtparamset *ps, int num_params); 567 static void safillprot(struct sa_softc *softc, int *indent, 568 struct sbuf *sb); 569 static void sapopulateprots(struct sa_prot_state *cur_state, 570 struct sa_prot_map *new_table, 571 int table_ents); 572 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 573 int table_ents); 574 static int sasetprotents(struct cam_periph *periph, 575 struct mtparamset *ps, int num_params); 576 static struct sa_param_ent *safindparament(struct mtparamset *ps); 577 static int saparamsetlist(struct cam_periph *periph, 578 struct mtsetlist *list, int need_copy); 579 static int saextget(struct cdev *dev, struct cam_periph *periph, 580 struct sbuf *sb, struct mtextget *g); 581 static int saparamget(struct sa_softc *softc, struct sbuf *sb); 582 static void saprevent(struct cam_periph *periph, int action); 583 static int sarewind(struct cam_periph *periph); 584 static int saspace(struct cam_periph *periph, int count, 585 scsi_space_code code); 586 static void sadevgonecb(void *arg); 587 static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 588 static int samount(struct cam_periph *, int, struct cdev *); 589 static int saretension(struct cam_periph *periph); 590 static int sareservereleaseunit(struct cam_periph *periph, 591 int reserve); 592 static int saloadunload(struct cam_periph *periph, int load); 593 static int saerase(struct cam_periph *periph, int longerase); 594 static int sawritefilemarks(struct cam_periph *periph, 595 int nmarks, int setmarks, int immed); 596 static int sagetpos(struct cam_periph *periph); 597 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 598 static int sasetpos(struct cam_periph *periph, int, 599 struct mtlocate *); 600 static void safilldenstypesb(struct sbuf *sb, int *indent, 601 uint8_t *buf, int buf_len, 602 int is_density); 603 static void safilldensitysb(struct sa_softc *softc, int *indent, 604 struct sbuf *sb); 605 606 #ifndef SA_DEFAULT_IO_SPLIT 607 #define SA_DEFAULT_IO_SPLIT 0 608 #endif 609 610 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 611 612 /* 613 * Tunable to allow the user to set a global allow_io_split value. Note 614 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 615 * is bad behavior, because it hides the true tape block size from the 616 * application. 617 */ 618 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 619 "CAM Sequential Access Tape Driver"); 620 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 621 &sa_allow_io_split, 0, "Default I/O split value"); 622 623 static struct periph_driver sadriver = 624 { 625 sainit, "sa", 626 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 627 }; 628 629 PERIPHDRIVER_DECLARE(sa, sadriver); 630 631 /* For 2.2-stable support */ 632 #ifndef D_TAPE 633 #define D_TAPE 0 634 #endif 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) != 0) { 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 softc->open_rdonly = 0; 742 if (SA_IS_CTRL(dev)) { 743 softc->ctrl_mode = 0; 744 softc->open_count--; 745 cam_periph_unlock(periph); 746 cam_periph_release(periph); 747 return (0); 748 } 749 750 if (softc->open_pending_mount) { 751 softc->flags &= ~SA_FLAG_OPEN; 752 softc->open_pending_mount = 0; 753 softc->open_count--; 754 cam_periph_unlock(periph); 755 cam_periph_release(periph); 756 return (0); 757 } 758 759 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 760 cam_periph_unlock(periph); 761 return (error); 762 } 763 764 /* 765 * Were we writing the tape? 766 */ 767 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 768 769 /* 770 * See whether or not we need to write filemarks. If this 771 * fails, we probably have to assume we've lost tape 772 * position. 773 */ 774 error = sacheckeod(periph); 775 if (error) { 776 xpt_print(periph->path, 777 "failed to write terminating filemark(s)\n"); 778 softc->flags |= SA_FLAG_TAPE_FROZEN; 779 } 780 781 /* 782 * Whatever we end up doing, allow users to eject tapes from here on. 783 */ 784 saprevent(periph, PR_ALLOW); 785 786 /* 787 * Decide how to end... 788 */ 789 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 790 closedbits |= SA_FLAG_TAPE_FROZEN; 791 } else switch (mode) { 792 case SA_MODE_OFFLINE: 793 /* 794 * An 'offline' close is an unconditional release of 795 * frozen && mount conditions, irrespective of whether 796 * these operations succeeded. The reason for this is 797 * to allow at least some kind of programmatic way 798 * around our state getting all fouled up. If somebody 799 * issues an 'offline' command, that will be allowed 800 * to clear state. 801 */ 802 (void) sarewind(periph); 803 (void) saloadunload(periph, FALSE); 804 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 805 break; 806 case SA_MODE_REWIND: 807 /* 808 * If the rewind fails, return an error- if anyone cares, 809 * but not overwriting any previous error. 810 * 811 * We don't clear the notion of mounted here, but we do 812 * clear the notion of frozen if we successfully rewound. 813 */ 814 tmp = sarewind(periph); 815 if (tmp) { 816 if (error != 0) 817 error = tmp; 818 } else { 819 closedbits |= SA_FLAG_TAPE_FROZEN; 820 } 821 break; 822 case SA_MODE_NOREWIND: 823 /* 824 * If we're not rewinding/unloading the tape, find out 825 * whether we need to back up over one of two filemarks 826 * we wrote (if we wrote two filemarks) so that appends 827 * from this point on will be sane. 828 */ 829 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 830 tmp = saspace(periph, -1, SS_FILEMARKS); 831 if (tmp) { 832 xpt_print(periph->path, "unable to backspace " 833 "over one of double filemarks at end of " 834 "tape\n"); 835 xpt_print(periph->path, "it is possible that " 836 "this device needs a SA_QUIRK_1FM quirk set" 837 "for it\n"); 838 softc->flags |= SA_FLAG_TAPE_FROZEN; 839 } 840 } 841 break; 842 default: 843 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 844 /* NOTREACHED */ 845 break; 846 } 847 848 /* 849 * We wish to note here that there are no more filemarks to be written. 850 */ 851 softc->filemarks = 0; 852 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 853 854 /* 855 * And we are no longer open for business. 856 */ 857 softc->flags &= ~closedbits; 858 softc->open_count--; 859 860 /* 861 * Invalidate any density information that depends on having tape 862 * media in the drive. 863 */ 864 for (i = 0; i < SA_DENSITY_TYPES; i++) { 865 if (softc->density_type_bits[i] & SRDS_MEDIA) 866 softc->density_info_valid[i] = 0; 867 } 868 869 /* 870 * Inform users if tape state if frozen.... 871 */ 872 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 873 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 874 "REWIND or MTEOM command to clear this state.\n"); 875 } 876 877 /* release the device if it is no longer mounted */ 878 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 879 sareservereleaseunit(periph, FALSE); 880 881 cam_periph_unhold(periph); 882 cam_periph_unlock(periph); 883 cam_periph_release(periph); 884 885 return (error); 886 } 887 888 /* 889 * Actually translate the requested transfer into one the physical driver 890 * can understand. The transfer is described by a buf and will include 891 * only one physical transfer. 892 */ 893 static void 894 sastrategy(struct bio *bp) 895 { 896 struct cam_periph *periph; 897 struct sa_softc *softc; 898 899 bp->bio_resid = bp->bio_bcount; 900 if (SA_IS_CTRL(bp->bio_dev)) { 901 biofinish(bp, NULL, EINVAL); 902 return; 903 } 904 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 905 cam_periph_lock(periph); 906 907 softc = (struct sa_softc *)periph->softc; 908 909 if (softc->flags & SA_FLAG_INVALID) { 910 cam_periph_unlock(periph); 911 biofinish(bp, NULL, ENXIO); 912 return; 913 } 914 915 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 916 cam_periph_unlock(periph); 917 biofinish(bp, NULL, EPERM); 918 return; 919 } 920 921 /* 922 * This should actually never occur as the write(2) 923 * system call traps attempts to write to a read-only 924 * file descriptor. 925 */ 926 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 927 cam_periph_unlock(periph); 928 biofinish(bp, NULL, EBADF); 929 return; 930 } 931 932 if (softc->open_pending_mount) { 933 int error = samount(periph, 0, bp->bio_dev); 934 if (error) { 935 cam_periph_unlock(periph); 936 biofinish(bp, NULL, ENXIO); 937 return; 938 } 939 saprevent(periph, PR_PREVENT); 940 softc->open_pending_mount = 0; 941 } 942 943 /* 944 * If it's a null transfer, return immediately 945 */ 946 if (bp->bio_bcount == 0) { 947 cam_periph_unlock(periph); 948 biodone(bp); 949 return; 950 } 951 952 /* valid request? */ 953 if (softc->flags & SA_FLAG_FIXED) { 954 /* 955 * Fixed block device. The byte count must 956 * be a multiple of our block size. 957 */ 958 if (((softc->blk_mask != ~0) && 959 ((bp->bio_bcount & softc->blk_mask) != 0)) || 960 ((softc->blk_mask == ~0) && 961 ((bp->bio_bcount % softc->min_blk) != 0))) { 962 xpt_print(periph->path, "Invalid request. Fixed block " 963 "device requests must be a multiple of %d bytes\n", 964 softc->min_blk); 965 cam_periph_unlock(periph); 966 biofinish(bp, NULL, EINVAL); 967 return; 968 } 969 } else if ((bp->bio_bcount > softc->max_blk) || 970 (bp->bio_bcount < softc->min_blk) || 971 (bp->bio_bcount & softc->blk_mask) != 0) { 972 xpt_print_path(periph->path); 973 printf("Invalid request. Variable block " 974 "device requests must be "); 975 if (softc->blk_mask != 0) { 976 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 977 } 978 printf("between %d and %d bytes\n", softc->min_blk, 979 softc->max_blk); 980 cam_periph_unlock(periph); 981 biofinish(bp, NULL, EINVAL); 982 return; 983 } 984 985 /* 986 * Place it at the end of the queue. 987 */ 988 bioq_insert_tail(&softc->bio_queue, bp); 989 softc->queue_count++; 990 #if 0 991 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 992 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 993 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 994 (bp->bio_cmd == BIO_READ)? "read" : "write")); 995 #endif 996 if (softc->queue_count > 1) { 997 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 998 ("sastrategy: queue count now %d\n", softc->queue_count)); 999 } 1000 1001 /* 1002 * Schedule ourselves for performing the work. 1003 */ 1004 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1005 cam_periph_unlock(periph); 1006 1007 return; 1008 } 1009 1010 static int 1011 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1012 { 1013 uint32_t sili_blocksize; 1014 struct sa_softc *softc; 1015 int error; 1016 1017 error = 0; 1018 softc = (struct sa_softc *)periph->softc; 1019 1020 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1021 snprintf(ps->error_str, sizeof(ps->error_str), 1022 "sili is a signed parameter"); 1023 goto bailout; 1024 } 1025 if ((ps->value.value_signed < 0) 1026 || (ps->value.value_signed > 1)) { 1027 snprintf(ps->error_str, sizeof(ps->error_str), 1028 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1029 goto bailout_error; 1030 } 1031 /* 1032 * We only set the SILI flag in variable block 1033 * mode. You'll get a check condition in fixed 1034 * block mode if things don't line up in any case. 1035 */ 1036 if (softc->flags & SA_FLAG_FIXED) { 1037 snprintf(ps->error_str, sizeof(ps->error_str), 1038 "can't set sili bit in fixed block mode"); 1039 goto bailout_error; 1040 } 1041 if (softc->sili == ps->value.value_signed) 1042 goto bailout; 1043 1044 if (ps->value.value_signed == 1) 1045 sili_blocksize = 4; 1046 else 1047 sili_blocksize = 0; 1048 1049 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1050 sili_blocksize, 0, 0, SF_QUIET_IR); 1051 if (error != 0) { 1052 snprintf(ps->error_str, sizeof(ps->error_str), 1053 "sasetparams() returned error %d", error); 1054 goto bailout_error; 1055 } 1056 1057 softc->sili = ps->value.value_signed; 1058 1059 bailout: 1060 ps->status = MT_PARAM_STATUS_OK; 1061 return (error); 1062 1063 bailout_error: 1064 ps->status = MT_PARAM_STATUS_ERROR; 1065 if (error == 0) 1066 error = EINVAL; 1067 1068 return (error); 1069 } 1070 1071 static int 1072 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1073 { 1074 struct sa_softc *softc; 1075 int error; 1076 1077 error = 0; 1078 softc = (struct sa_softc *)periph->softc; 1079 1080 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1081 snprintf(ps->error_str, sizeof(ps->error_str), 1082 "eot_warn is a signed parameter"); 1083 ps->status = MT_PARAM_STATUS_ERROR; 1084 goto bailout; 1085 } 1086 if ((ps->value.value_signed < 0) 1087 || (ps->value.value_signed > 1)) { 1088 snprintf(ps->error_str, sizeof(ps->error_str), 1089 "invalid eot_warn value %jd\n", 1090 (intmax_t)ps->value.value_signed); 1091 ps->status = MT_PARAM_STATUS_ERROR; 1092 goto bailout; 1093 } 1094 softc->eot_warn = ps->value.value_signed; 1095 ps->status = MT_PARAM_STATUS_OK; 1096 bailout: 1097 if (ps->status != MT_PARAM_STATUS_OK) 1098 error = EINVAL; 1099 1100 return (error); 1101 } 1102 1103 static void 1104 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1105 { 1106 int tmpint; 1107 1108 SASBADDNODE(sb, *indent, protection); 1109 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1110 tmpint = 1; 1111 else 1112 tmpint = 0; 1113 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1114 "Set to 1 if protection information is supported"); 1115 1116 if ((tmpint != 0) 1117 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1118 struct sa_prot_state *prot; 1119 1120 prot = &softc->prot_info.cur_prot_state; 1121 1122 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1123 prot_method, "Current Protection Method"); 1124 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1125 pi_length, "Length of Protection Information"); 1126 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1127 lbp_w, "Check Protection on Writes"); 1128 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1129 lbp_r, "Check and Include Protection on Reads"); 1130 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1131 rbdp, "Transfer Protection Information for RECOVER " 1132 "BUFFERED DATA command"); 1133 } 1134 SASBENDNODE(sb, *indent, protection); 1135 } 1136 1137 static void 1138 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1139 int table_ents) 1140 { 1141 int i; 1142 1143 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1144 sizeof(sa_prot_table))); 1145 1146 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1147 1148 for (i = 0; i < table_ents; i++) 1149 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1150 new_table[i].offset); 1151 1152 return; 1153 } 1154 1155 static struct sa_prot_map * 1156 safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1157 { 1158 char *prot_name = "protection."; 1159 int i, prot_len; 1160 1161 prot_len = strlen(prot_name); 1162 1163 /* 1164 * This shouldn't happen, but we check just in case. 1165 */ 1166 if (strncmp(name, prot_name, prot_len) != 0) 1167 goto bailout; 1168 1169 for (i = 0; i < table_ents; i++) { 1170 if (strcmp(&name[prot_len], table[i].name) != 0) 1171 continue; 1172 return (&table[i]); 1173 } 1174 bailout: 1175 return (NULL); 1176 } 1177 1178 static int 1179 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1180 { 1181 struct sa_softc *softc; 1182 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1183 struct sa_prot_state new_state; 1184 int error; 1185 int i; 1186 1187 softc = (struct sa_softc *)periph->softc; 1188 error = 0; 1189 1190 /* 1191 * Make sure that this tape drive supports protection information. 1192 * Otherwise we can't set anything. 1193 */ 1194 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1195 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1196 "Protection information is not supported for this device"); 1197 ps[0].status = MT_PARAM_STATUS_ERROR; 1198 goto bailout; 1199 } 1200 1201 /* 1202 * We can't operate with physio(9) splitting enabled, because there 1203 * is no way to insure (especially in variable block mode) that 1204 * what the user writes (with a checksum block at the end) will 1205 * make it into the sa(4) driver intact. 1206 */ 1207 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1208 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1209 "Protection information cannot be enabled with I/O " 1210 "splitting"); 1211 ps[0].status = MT_PARAM_STATUS_ERROR; 1212 goto bailout; 1213 } 1214 1215 /* 1216 * Take the current cached protection state and use that as the 1217 * basis for our new entries. 1218 */ 1219 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1220 1221 /* 1222 * Populate the table mapping property names to pointers into the 1223 * state structure. 1224 */ 1225 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1226 1227 /* 1228 * For each parameter the user passed in, make sure the name, type 1229 * and value are valid. 1230 */ 1231 for (i = 0; i < num_params; i++) { 1232 struct sa_prot_map *ent; 1233 1234 ent = safindprotent(ps[i].value_name, prot_ents, 1235 SA_NUM_PROT_ENTS); 1236 if (ent == NULL) { 1237 ps[i].status = MT_PARAM_STATUS_ERROR; 1238 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1239 "Invalid protection entry name %s", 1240 ps[i].value_name); 1241 error = EINVAL; 1242 goto bailout; 1243 } 1244 if (ent->param_type != ps[i].value_type) { 1245 ps[i].status = MT_PARAM_STATUS_ERROR; 1246 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1247 "Supplied type %d does not match actual type %d", 1248 ps[i].value_type, ent->param_type); 1249 error = EINVAL; 1250 goto bailout; 1251 } 1252 if ((ps[i].value.value_unsigned < ent->min_val) 1253 || (ps[i].value.value_unsigned > ent->max_val)) { 1254 ps[i].status = MT_PARAM_STATUS_ERROR; 1255 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1256 "Value %ju is outside valid range %u - %u", 1257 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1258 ent->max_val); 1259 error = EINVAL; 1260 goto bailout; 1261 } 1262 *(ent->value) = ps[i].value.value_unsigned; 1263 } 1264 1265 /* 1266 * Actually send the protection settings to the drive. 1267 */ 1268 error = sasetprot(periph, &new_state); 1269 if (error != 0) { 1270 for (i = 0; i < num_params; i++) { 1271 ps[i].status = MT_PARAM_STATUS_ERROR; 1272 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1273 "Unable to set parameter, see dmesg(8)"); 1274 } 1275 goto bailout; 1276 } 1277 1278 /* 1279 * Let the user know that his settings were stored successfully. 1280 */ 1281 for (i = 0; i < num_params; i++) 1282 ps[i].status = MT_PARAM_STATUS_OK; 1283 1284 bailout: 1285 return (error); 1286 } 1287 /* 1288 * Entry handlers generally only handle a single entry. Node handlers will 1289 * handle a contiguous range of parameters to set in a single call. 1290 */ 1291 typedef enum { 1292 SA_PARAM_TYPE_ENTRY, 1293 SA_PARAM_TYPE_NODE 1294 } sa_param_type; 1295 1296 struct sa_param_ent { 1297 char *name; 1298 sa_param_type param_type; 1299 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1300 int num_params); 1301 } sa_param_table[] = { 1302 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1303 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1304 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1305 }; 1306 1307 static struct sa_param_ent * 1308 safindparament(struct mtparamset *ps) 1309 { 1310 unsigned int i; 1311 1312 for (i = 0; i < nitems(sa_param_table); i++){ 1313 /* 1314 * For entries, we compare all of the characters. For 1315 * nodes, we only compare the first N characters. The node 1316 * handler will decode the rest. 1317 */ 1318 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1319 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1320 continue; 1321 } else { 1322 if (strncmp(ps->value_name, sa_param_table[i].name, 1323 strlen(sa_param_table[i].name)) != 0) 1324 continue; 1325 } 1326 return (&sa_param_table[i]); 1327 } 1328 1329 return (NULL); 1330 } 1331 1332 /* 1333 * Go through a list of parameters, coalescing contiguous parameters with 1334 * the same parent node into a single call to a set_func. 1335 */ 1336 static int 1337 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1338 int need_copy) 1339 { 1340 int i, contig_ents; 1341 int error; 1342 struct mtparamset *params, *first; 1343 struct sa_param_ent *first_ent; 1344 1345 error = 0; 1346 params = NULL; 1347 1348 if (list->num_params == 0) 1349 /* Nothing to do */ 1350 goto bailout; 1351 1352 /* 1353 * Verify that the user has the correct structure size. 1354 */ 1355 if ((list->num_params * sizeof(struct mtparamset)) != 1356 list->param_len) { 1357 xpt_print(periph->path, "%s: length of params %d != " 1358 "sizeof(struct mtparamset) %zd * num_params %d\n", 1359 __func__, list->param_len, sizeof(struct mtparamset), 1360 list->num_params); 1361 error = EINVAL; 1362 goto bailout; 1363 } 1364 1365 if (need_copy != 0) { 1366 /* 1367 * XXX KDM will dropping the lock cause an issue here? 1368 */ 1369 cam_periph_unlock(periph); 1370 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1371 error = copyin(list->params, params, list->param_len); 1372 cam_periph_lock(periph); 1373 1374 if (error != 0) 1375 goto bailout; 1376 } else { 1377 params = list->params; 1378 } 1379 1380 contig_ents = 0; 1381 first = NULL; 1382 first_ent = NULL; 1383 for (i = 0; i < list->num_params; i++) { 1384 struct sa_param_ent *ent; 1385 1386 ent = safindparament(¶ms[i]); 1387 if (ent == NULL) { 1388 snprintf(params[i].error_str, 1389 sizeof(params[i].error_str), 1390 "%s: cannot find parameter %s", __func__, 1391 params[i].value_name); 1392 params[i].status = MT_PARAM_STATUS_ERROR; 1393 break; 1394 } 1395 1396 if (first != NULL) { 1397 if (first_ent == ent) { 1398 /* 1399 * We're still in a contiguous list of 1400 * parameters that can be handled by one 1401 * node handler. 1402 */ 1403 contig_ents++; 1404 continue; 1405 } else { 1406 error = first_ent->set_func(periph, first, 1407 contig_ents); 1408 first = NULL; 1409 first_ent = NULL; 1410 contig_ents = 0; 1411 if (error != 0) { 1412 error = 0; 1413 break; 1414 } 1415 } 1416 } 1417 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1418 first = ¶ms[i]; 1419 first_ent = ent; 1420 contig_ents = 1; 1421 } else { 1422 error = ent->set_func(periph, ¶ms[i], 1); 1423 if (error != 0) { 1424 error = 0; 1425 break; 1426 } 1427 } 1428 } 1429 if (first != NULL) 1430 first_ent->set_func(periph, first, contig_ents); 1431 1432 bailout: 1433 if (need_copy != 0) { 1434 if (error != EFAULT) { 1435 cam_periph_unlock(periph); 1436 copyout(params, list->params, list->param_len); 1437 cam_periph_lock(periph); 1438 } 1439 free(params, M_SCSISA); 1440 } 1441 return (error); 1442 } 1443 1444 static int 1445 sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1446 { 1447 struct sa_softc *softc; 1448 u_int8_t write_protect; 1449 int comp_enabled, comp_supported, error; 1450 1451 softc = (struct sa_softc *)periph->softc; 1452 1453 if (softc->open_pending_mount) 1454 return (0); 1455 1456 /* The control device may issue getparams() if there are no opens. */ 1457 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1458 return (0); 1459 1460 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1461 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1462 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1463 &softc->comp_algorithm, NULL, NULL, 0, 0); 1464 if (error) 1465 return (error); 1466 if (write_protect) 1467 softc->flags |= SA_FLAG_TAPE_WP; 1468 else 1469 softc->flags &= ~SA_FLAG_TAPE_WP; 1470 softc->flags &= ~SA_FLAG_COMPRESSION; 1471 if (comp_supported) { 1472 if (softc->saved_comp_algorithm == 0) 1473 softc->saved_comp_algorithm = 1474 softc->comp_algorithm; 1475 softc->flags |= SA_FLAG_COMP_SUPP; 1476 if (comp_enabled) 1477 softc->flags |= SA_FLAG_COMP_ENABLED; 1478 } else 1479 softc->flags |= SA_FLAG_COMP_UNSUPP; 1480 1481 return (0); 1482 } 1483 1484 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1485 if (softc->open_pending_mount) { \ 1486 error = samount(periph, 0, dev); \ 1487 if (error) { \ 1488 break; \ 1489 } \ 1490 saprevent(periph, PR_PREVENT); \ 1491 softc->open_pending_mount = 0; \ 1492 } 1493 1494 static int 1495 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1496 { 1497 struct cam_periph *periph; 1498 struct sa_softc *softc; 1499 scsi_space_code spaceop; 1500 int didlockperiph = 0; 1501 int mode; 1502 int error = 0; 1503 1504 mode = SAMODE(dev); 1505 error = 0; /* shut up gcc */ 1506 spaceop = 0; /* shut up gcc */ 1507 1508 periph = (struct cam_periph *)dev->si_drv1; 1509 cam_periph_lock(periph); 1510 softc = (struct sa_softc *)periph->softc; 1511 1512 /* 1513 * Check for control mode accesses. We allow MTIOCGET and 1514 * MTIOCERRSTAT (but need to be the only one open in order 1515 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1516 * and MTCOMP (but need to be the only one accessing this 1517 * device to run those). 1518 */ 1519 1520 if (SA_IS_CTRL(dev)) { 1521 switch (cmd) { 1522 case MTIOCGETEOTMODEL: 1523 case MTIOCGET: 1524 case MTIOCEXTGET: 1525 case MTIOCPARAMGET: 1526 case MTIOCRBLIM: 1527 break; 1528 case MTIOCERRSTAT: 1529 /* 1530 * If the periph isn't already locked, lock it 1531 * so our MTIOCERRSTAT can reset latched error stats. 1532 * 1533 * If the periph is already locked, skip it because 1534 * we're just getting status and it'll be up to the 1535 * other thread that has this device open to do 1536 * an MTIOCERRSTAT that would clear latched status. 1537 */ 1538 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1539 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1540 if (error != 0) { 1541 cam_periph_unlock(periph); 1542 return (error); 1543 } 1544 didlockperiph = 1; 1545 } 1546 break; 1547 1548 case MTIOCTOP: 1549 { 1550 struct mtop *mt = (struct mtop *) arg; 1551 1552 /* 1553 * Check to make sure it's an OP we can perform 1554 * with no media inserted. 1555 */ 1556 switch (mt->mt_op) { 1557 case MTSETBSIZ: 1558 case MTSETDNSTY: 1559 case MTCOMP: 1560 mt = NULL; 1561 /* FALLTHROUGH */ 1562 default: 1563 break; 1564 } 1565 if (mt != NULL) { 1566 break; 1567 } 1568 /* FALLTHROUGH */ 1569 } 1570 case MTIOCSETEOTMODEL: 1571 /* 1572 * We need to acquire the peripheral here rather 1573 * than at open time because we are sharing writable 1574 * access to data structures. 1575 */ 1576 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1577 if (error != 0) { 1578 cam_periph_unlock(periph); 1579 return (error); 1580 } 1581 didlockperiph = 1; 1582 break; 1583 1584 default: 1585 cam_periph_unlock(periph); 1586 return (EINVAL); 1587 } 1588 } 1589 1590 /* 1591 * Find the device that the user is talking about 1592 */ 1593 switch (cmd) { 1594 case MTIOCGET: 1595 { 1596 struct mtget *g = (struct mtget *)arg; 1597 1598 error = sagetparams_common(dev, periph); 1599 if (error) 1600 break; 1601 bzero(g, sizeof(struct mtget)); 1602 g->mt_type = MT_ISAR; 1603 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1604 g->mt_comp = MT_COMP_UNSUPP; 1605 g->mt_comp0 = MT_COMP_UNSUPP; 1606 g->mt_comp1 = MT_COMP_UNSUPP; 1607 g->mt_comp2 = MT_COMP_UNSUPP; 1608 g->mt_comp3 = MT_COMP_UNSUPP; 1609 } else { 1610 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1611 g->mt_comp = MT_COMP_DISABLED; 1612 } else { 1613 g->mt_comp = softc->comp_algorithm; 1614 } 1615 g->mt_comp0 = softc->comp_algorithm; 1616 g->mt_comp1 = softc->comp_algorithm; 1617 g->mt_comp2 = softc->comp_algorithm; 1618 g->mt_comp3 = softc->comp_algorithm; 1619 } 1620 g->mt_density = softc->media_density; 1621 g->mt_density0 = softc->media_density; 1622 g->mt_density1 = softc->media_density; 1623 g->mt_density2 = softc->media_density; 1624 g->mt_density3 = softc->media_density; 1625 g->mt_blksiz = softc->media_blksize; 1626 g->mt_blksiz0 = softc->media_blksize; 1627 g->mt_blksiz1 = softc->media_blksize; 1628 g->mt_blksiz2 = softc->media_blksize; 1629 g->mt_blksiz3 = softc->media_blksize; 1630 g->mt_fileno = softc->fileno; 1631 g->mt_blkno = softc->blkno; 1632 g->mt_dsreg = (short) softc->dsreg; 1633 /* 1634 * Yes, we know that this is likely to overflow 1635 */ 1636 if (softc->last_resid_was_io) { 1637 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1638 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1639 softc->last_io_resid = 0; 1640 } 1641 } 1642 } else { 1643 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1644 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1645 softc->last_ctl_resid = 0; 1646 } 1647 } 1648 } 1649 error = 0; 1650 break; 1651 } 1652 case MTIOCEXTGET: 1653 case MTIOCPARAMGET: 1654 { 1655 struct mtextget *g = (struct mtextget *)arg; 1656 char *tmpstr2; 1657 struct sbuf *sb; 1658 1659 /* 1660 * Report drive status using an XML format. 1661 */ 1662 1663 /* 1664 * XXX KDM will dropping the lock cause any problems here? 1665 */ 1666 cam_periph_unlock(periph); 1667 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1668 if (sb == NULL) { 1669 g->status = MT_EXT_GET_ERROR; 1670 snprintf(g->error_str, sizeof(g->error_str), 1671 "Unable to allocate %d bytes for status info", 1672 g->alloc_len); 1673 cam_periph_lock(periph); 1674 goto extget_bailout; 1675 } 1676 cam_periph_lock(periph); 1677 1678 if (cmd == MTIOCEXTGET) 1679 error = saextget(dev, periph, sb, g); 1680 else 1681 error = saparamget(softc, sb); 1682 1683 if (error != 0) 1684 goto extget_bailout; 1685 1686 error = sbuf_finish(sb); 1687 if (error == ENOMEM) { 1688 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1689 error = 0; 1690 } else if (error != 0) { 1691 g->status = MT_EXT_GET_ERROR; 1692 snprintf(g->error_str, sizeof(g->error_str), 1693 "Error %d returned from sbuf_finish()", error); 1694 } else 1695 g->status = MT_EXT_GET_OK; 1696 1697 error = 0; 1698 tmpstr2 = sbuf_data(sb); 1699 g->fill_len = strlen(tmpstr2) + 1; 1700 cam_periph_unlock(periph); 1701 1702 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1703 1704 cam_periph_lock(periph); 1705 1706 extget_bailout: 1707 sbuf_delete(sb); 1708 break; 1709 } 1710 case MTIOCPARAMSET: 1711 { 1712 struct mtsetlist list; 1713 struct mtparamset *ps = (struct mtparamset *)arg; 1714 1715 bzero(&list, sizeof(list)); 1716 list.num_params = 1; 1717 list.param_len = sizeof(*ps); 1718 list.params = ps; 1719 1720 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1721 break; 1722 } 1723 case MTIOCSETLIST: 1724 { 1725 struct mtsetlist *list = (struct mtsetlist *)arg; 1726 1727 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1728 break; 1729 } 1730 case MTIOCERRSTAT: 1731 { 1732 struct scsi_tape_errors *sep = 1733 &((union mterrstat *)arg)->scsi_errstat; 1734 1735 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1736 ("saioctl: MTIOCERRSTAT\n")); 1737 1738 bzero(sep, sizeof(*sep)); 1739 sep->io_resid = softc->last_io_resid; 1740 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1741 sizeof (sep->io_sense)); 1742 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1743 sizeof (sep->io_cdb)); 1744 sep->ctl_resid = softc->last_ctl_resid; 1745 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1746 sizeof (sep->ctl_sense)); 1747 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1748 sizeof (sep->ctl_cdb)); 1749 1750 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1751 didlockperiph) 1752 bzero((caddr_t) &softc->errinfo, 1753 sizeof (softc->errinfo)); 1754 error = 0; 1755 break; 1756 } 1757 case MTIOCTOP: 1758 { 1759 struct mtop *mt; 1760 int count; 1761 1762 PENDING_MOUNT_CHECK(softc, periph, dev); 1763 1764 mt = (struct mtop *)arg; 1765 1766 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1767 ("saioctl: op=0x%x count=0x%x\n", 1768 mt->mt_op, mt->mt_count)); 1769 1770 count = mt->mt_count; 1771 switch (mt->mt_op) { 1772 case MTWEOF: /* write an end-of-file marker */ 1773 /* 1774 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1775 * flag because by keeping track of filemarks 1776 * we have last written we know whether or not 1777 * we need to write more when we close the device. 1778 */ 1779 error = sawritefilemarks(periph, count, FALSE, FALSE); 1780 break; 1781 case MTWEOFI: 1782 /* write an end-of-file marker without waiting */ 1783 error = sawritefilemarks(periph, count, FALSE, TRUE); 1784 break; 1785 case MTWSS: /* write a setmark */ 1786 error = sawritefilemarks(periph, count, TRUE, FALSE); 1787 break; 1788 case MTBSR: /* backward space record */ 1789 case MTFSR: /* forward space record */ 1790 case MTBSF: /* backward space file */ 1791 case MTFSF: /* forward space file */ 1792 case MTBSS: /* backward space setmark */ 1793 case MTFSS: /* forward space setmark */ 1794 case MTEOD: /* space to end of recorded medium */ 1795 { 1796 int nmarks; 1797 1798 spaceop = SS_FILEMARKS; 1799 nmarks = softc->filemarks; 1800 error = sacheckeod(periph); 1801 if (error) { 1802 xpt_print(periph->path, 1803 "EOD check prior to spacing failed\n"); 1804 softc->flags |= SA_FLAG_EIO_PENDING; 1805 break; 1806 } 1807 nmarks -= softc->filemarks; 1808 switch(mt->mt_op) { 1809 case MTBSR: 1810 count = -count; 1811 /* FALLTHROUGH */ 1812 case MTFSR: 1813 spaceop = SS_BLOCKS; 1814 break; 1815 case MTBSF: 1816 count = -count; 1817 /* FALLTHROUGH */ 1818 case MTFSF: 1819 break; 1820 case MTBSS: 1821 count = -count; 1822 /* FALLTHROUGH */ 1823 case MTFSS: 1824 spaceop = SS_SETMARKS; 1825 break; 1826 case MTEOD: 1827 spaceop = SS_EOD; 1828 count = 0; 1829 nmarks = 0; 1830 break; 1831 default: 1832 error = EINVAL; 1833 break; 1834 } 1835 if (error) 1836 break; 1837 1838 nmarks = softc->filemarks; 1839 /* 1840 * XXX: Why are we checking again? 1841 */ 1842 error = sacheckeod(periph); 1843 if (error) 1844 break; 1845 nmarks -= softc->filemarks; 1846 error = saspace(periph, count - nmarks, spaceop); 1847 /* 1848 * At this point, clear that we've written the tape 1849 * and that we've written any filemarks. We really 1850 * don't know what the applications wishes to do next- 1851 * the sacheckeod's will make sure we terminated the 1852 * tape correctly if we'd been writing, but the next 1853 * action the user application takes will set again 1854 * whether we need to write filemarks. 1855 */ 1856 softc->flags &= 1857 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1858 softc->filemarks = 0; 1859 break; 1860 } 1861 case MTREW: /* rewind */ 1862 PENDING_MOUNT_CHECK(softc, periph, dev); 1863 (void) sacheckeod(periph); 1864 error = sarewind(periph); 1865 /* see above */ 1866 softc->flags &= 1867 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1868 softc->flags &= ~SA_FLAG_ERR_PENDING; 1869 softc->filemarks = 0; 1870 break; 1871 case MTERASE: /* erase */ 1872 PENDING_MOUNT_CHECK(softc, periph, dev); 1873 error = saerase(periph, count); 1874 softc->flags &= 1875 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1876 softc->flags &= ~SA_FLAG_ERR_PENDING; 1877 break; 1878 case MTRETENS: /* re-tension tape */ 1879 PENDING_MOUNT_CHECK(softc, periph, dev); 1880 error = saretension(periph); 1881 softc->flags &= 1882 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1883 softc->flags &= ~SA_FLAG_ERR_PENDING; 1884 break; 1885 case MTOFFL: /* rewind and put the drive offline */ 1886 1887 PENDING_MOUNT_CHECK(softc, periph, dev); 1888 1889 (void) sacheckeod(periph); 1890 /* see above */ 1891 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1892 softc->filemarks = 0; 1893 1894 error = sarewind(periph); 1895 /* clear the frozen flag anyway */ 1896 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1897 1898 /* 1899 * Be sure to allow media removal before ejecting. 1900 */ 1901 1902 saprevent(periph, PR_ALLOW); 1903 if (error == 0) { 1904 error = saloadunload(periph, FALSE); 1905 if (error == 0) { 1906 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1907 } 1908 } 1909 break; 1910 1911 case MTLOAD: 1912 error = saloadunload(periph, TRUE); 1913 break; 1914 case MTNOP: /* no operation, sets status only */ 1915 case MTCACHE: /* enable controller cache */ 1916 case MTNOCACHE: /* disable controller cache */ 1917 error = 0; 1918 break; 1919 1920 case MTSETBSIZ: /* Set block size for device */ 1921 1922 PENDING_MOUNT_CHECK(softc, periph, dev); 1923 1924 if ((softc->sili != 0) 1925 && (count != 0)) { 1926 xpt_print(periph->path, "Can't enter fixed " 1927 "block mode with SILI enabled\n"); 1928 error = EINVAL; 1929 break; 1930 } 1931 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1932 0, 0, 0); 1933 if (error == 0) { 1934 softc->last_media_blksize = 1935 softc->media_blksize; 1936 softc->media_blksize = count; 1937 if (count) { 1938 softc->flags |= SA_FLAG_FIXED; 1939 if (powerof2(count)) { 1940 softc->blk_shift = 1941 ffs(count) - 1; 1942 softc->blk_mask = count - 1; 1943 } else { 1944 softc->blk_mask = ~0; 1945 softc->blk_shift = 0; 1946 } 1947 /* 1948 * Make the user's desire 'persistent'. 1949 */ 1950 softc->quirks &= ~SA_QUIRK_VARIABLE; 1951 softc->quirks |= SA_QUIRK_FIXED; 1952 } else { 1953 softc->flags &= ~SA_FLAG_FIXED; 1954 if (softc->max_blk == 0) { 1955 softc->max_blk = ~0; 1956 } 1957 softc->blk_shift = 0; 1958 if (softc->blk_gran != 0) { 1959 softc->blk_mask = 1960 softc->blk_gran - 1; 1961 } else { 1962 softc->blk_mask = 0; 1963 } 1964 /* 1965 * Make the user's desire 'persistent'. 1966 */ 1967 softc->quirks |= SA_QUIRK_VARIABLE; 1968 softc->quirks &= ~SA_QUIRK_FIXED; 1969 } 1970 } 1971 break; 1972 case MTSETDNSTY: /* Set density for device and mode */ 1973 PENDING_MOUNT_CHECK(softc, periph, dev); 1974 1975 if (count > UCHAR_MAX) { 1976 error = EINVAL; 1977 break; 1978 } else { 1979 error = sasetparams(periph, SA_PARAM_DENSITY, 1980 0, count, 0, 0); 1981 } 1982 break; 1983 case MTCOMP: /* enable compression */ 1984 PENDING_MOUNT_CHECK(softc, periph, dev); 1985 /* 1986 * Some devices don't support compression, and 1987 * don't like it if you ask them for the 1988 * compression page. 1989 */ 1990 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1991 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1992 error = ENODEV; 1993 break; 1994 } 1995 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1996 0, 0, count, SF_NO_PRINT); 1997 break; 1998 default: 1999 error = EINVAL; 2000 } 2001 break; 2002 } 2003 case MTIOCIEOT: 2004 case MTIOCEEOT: 2005 error = 0; 2006 break; 2007 case MTIOCRDSPOS: 2008 PENDING_MOUNT_CHECK(softc, periph, dev); 2009 error = sardpos(periph, 0, (u_int32_t *) arg); 2010 break; 2011 case MTIOCRDHPOS: 2012 PENDING_MOUNT_CHECK(softc, periph, dev); 2013 error = sardpos(periph, 1, (u_int32_t *) arg); 2014 break; 2015 case MTIOCSLOCATE: 2016 case MTIOCHLOCATE: { 2017 struct mtlocate locate_info; 2018 int hard; 2019 2020 bzero(&locate_info, sizeof(locate_info)); 2021 locate_info.logical_id = *((uint32_t *)arg); 2022 if (cmd == MTIOCSLOCATE) 2023 hard = 0; 2024 else 2025 hard = 1; 2026 2027 PENDING_MOUNT_CHECK(softc, periph, dev); 2028 2029 error = sasetpos(periph, hard, &locate_info); 2030 break; 2031 } 2032 case MTIOCEXTLOCATE: 2033 PENDING_MOUNT_CHECK(softc, periph, dev); 2034 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2035 softc->flags &= 2036 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2037 softc->flags &= ~SA_FLAG_ERR_PENDING; 2038 softc->filemarks = 0; 2039 break; 2040 case MTIOCGETEOTMODEL: 2041 error = 0; 2042 if (softc->quirks & SA_QUIRK_1FM) 2043 mode = 1; 2044 else 2045 mode = 2; 2046 *((u_int32_t *) arg) = mode; 2047 break; 2048 case MTIOCSETEOTMODEL: 2049 error = 0; 2050 switch (*((u_int32_t *) arg)) { 2051 case 1: 2052 softc->quirks &= ~SA_QUIRK_2FM; 2053 softc->quirks |= SA_QUIRK_1FM; 2054 break; 2055 case 2: 2056 softc->quirks &= ~SA_QUIRK_1FM; 2057 softc->quirks |= SA_QUIRK_2FM; 2058 break; 2059 default: 2060 error = EINVAL; 2061 break; 2062 } 2063 break; 2064 case MTIOCRBLIM: { 2065 struct mtrblim *rblim; 2066 2067 rblim = (struct mtrblim *)arg; 2068 2069 rblim->granularity = softc->blk_gran; 2070 rblim->min_block_length = softc->min_blk; 2071 rblim->max_block_length = softc->max_blk; 2072 break; 2073 } 2074 default: 2075 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2076 break; 2077 } 2078 2079 /* 2080 * Check to see if we cleared a frozen state 2081 */ 2082 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2083 switch(cmd) { 2084 case MTIOCRDSPOS: 2085 case MTIOCRDHPOS: 2086 case MTIOCSLOCATE: 2087 case MTIOCHLOCATE: 2088 /* 2089 * XXX KDM look at this. 2090 */ 2091 softc->fileno = (daddr_t) -1; 2092 softc->blkno = (daddr_t) -1; 2093 softc->rep_blkno = (daddr_t) -1; 2094 softc->rep_fileno = (daddr_t) -1; 2095 softc->partition = (daddr_t) -1; 2096 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2097 xpt_print(periph->path, 2098 "tape state now unfrozen.\n"); 2099 break; 2100 default: 2101 break; 2102 } 2103 } 2104 if (didlockperiph) { 2105 cam_periph_unhold(periph); 2106 } 2107 cam_periph_unlock(periph); 2108 return (error); 2109 } 2110 2111 static void 2112 sainit(void) 2113 { 2114 cam_status status; 2115 2116 /* 2117 * Install a global async callback. 2118 */ 2119 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2120 2121 if (status != CAM_REQ_CMP) { 2122 printf("sa: Failed to attach master async callback " 2123 "due to status 0x%x!\n", status); 2124 } 2125 } 2126 2127 static void 2128 sadevgonecb(void *arg) 2129 { 2130 struct cam_periph *periph; 2131 struct mtx *mtx; 2132 struct sa_softc *softc; 2133 2134 periph = (struct cam_periph *)arg; 2135 softc = (struct sa_softc *)periph->softc; 2136 2137 mtx = cam_periph_mtx(periph); 2138 mtx_lock(mtx); 2139 2140 softc->num_devs_to_destroy--; 2141 if (softc->num_devs_to_destroy == 0) { 2142 int i; 2143 2144 /* 2145 * When we have gotten all of our callbacks, we will get 2146 * no more close calls from devfs. So if we have any 2147 * dangling opens, we need to release the reference held 2148 * for that particular context. 2149 */ 2150 for (i = 0; i < softc->open_count; i++) 2151 cam_periph_release_locked(periph); 2152 2153 softc->open_count = 0; 2154 2155 /* 2156 * Release the reference held for devfs, all of our 2157 * instances are gone now. 2158 */ 2159 cam_periph_release_locked(periph); 2160 } 2161 2162 /* 2163 * We reference the lock directly here, instead of using 2164 * cam_periph_unlock(). The reason is that the final call to 2165 * cam_periph_release_locked() above could result in the periph 2166 * getting freed. If that is the case, dereferencing the periph 2167 * with a cam_periph_unlock() call would cause a page fault. 2168 */ 2169 mtx_unlock(mtx); 2170 } 2171 2172 static void 2173 saoninvalidate(struct cam_periph *periph) 2174 { 2175 struct sa_softc *softc; 2176 2177 softc = (struct sa_softc *)periph->softc; 2178 2179 /* 2180 * De-register any async callbacks. 2181 */ 2182 xpt_register_async(0, saasync, periph, periph->path); 2183 2184 softc->flags |= SA_FLAG_INVALID; 2185 2186 /* 2187 * Return all queued I/O with ENXIO. 2188 * XXX Handle any transactions queued to the card 2189 * with XPT_ABORT_CCB. 2190 */ 2191 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2192 softc->queue_count = 0; 2193 2194 /* 2195 * Tell devfs that all of our devices have gone away, and ask for a 2196 * callback when it has cleaned up its state. 2197 */ 2198 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2199 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2200 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2201 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2202 } 2203 2204 static void 2205 sacleanup(struct cam_periph *periph) 2206 { 2207 struct sa_softc *softc; 2208 2209 softc = (struct sa_softc *)periph->softc; 2210 2211 cam_periph_unlock(periph); 2212 2213 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2214 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2215 xpt_print(periph->path, "can't remove sysctl context\n"); 2216 2217 cam_periph_lock(periph); 2218 2219 devstat_remove_entry(softc->device_stats); 2220 2221 free(softc, M_SCSISA); 2222 } 2223 2224 static void 2225 saasync(void *callback_arg, u_int32_t code, 2226 struct cam_path *path, void *arg) 2227 { 2228 struct cam_periph *periph; 2229 2230 periph = (struct cam_periph *)callback_arg; 2231 switch (code) { 2232 case AC_FOUND_DEVICE: 2233 { 2234 struct ccb_getdev *cgd; 2235 cam_status status; 2236 2237 cgd = (struct ccb_getdev *)arg; 2238 if (cgd == NULL) 2239 break; 2240 2241 if (cgd->protocol != PROTO_SCSI) 2242 break; 2243 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2244 break; 2245 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2246 break; 2247 2248 /* 2249 * Allocate a peripheral instance for 2250 * this device and start the probe 2251 * process. 2252 */ 2253 status = cam_periph_alloc(saregister, saoninvalidate, 2254 sacleanup, sastart, 2255 "sa", CAM_PERIPH_BIO, path, 2256 saasync, AC_FOUND_DEVICE, cgd); 2257 2258 if (status != CAM_REQ_CMP 2259 && status != CAM_REQ_INPROG) 2260 printf("saasync: Unable to probe new device " 2261 "due to status 0x%x\n", status); 2262 break; 2263 } 2264 default: 2265 cam_periph_async(periph, code, path, arg); 2266 break; 2267 } 2268 } 2269 2270 static void 2271 sasetupdev(struct sa_softc *softc, struct cdev *dev) 2272 { 2273 2274 dev->si_iosize_max = softc->maxio; 2275 dev->si_flags |= softc->si_flags; 2276 /* 2277 * Keep a count of how many non-alias devices we have created, 2278 * so we can make sure we clean them all up on shutdown. Aliases 2279 * are cleaned up when we destroy the device they're an alias for. 2280 */ 2281 if ((dev->si_flags & SI_ALIAS) == 0) 2282 softc->num_devs_to_destroy++; 2283 } 2284 2285 static void 2286 sasysctlinit(void *context, int pending) 2287 { 2288 struct cam_periph *periph; 2289 struct sa_softc *softc; 2290 char tmpstr[32], tmpstr2[16]; 2291 2292 periph = (struct cam_periph *)context; 2293 /* 2294 * If the periph is invalid, no need to setup the sysctls. 2295 */ 2296 if (periph->flags & CAM_PERIPH_INVALID) 2297 goto bailout; 2298 2299 softc = (struct sa_softc *)periph->softc; 2300 2301 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2302 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2303 2304 sysctl_ctx_init(&softc->sysctl_ctx); 2305 softc->flags |= SA_FLAG_SCTX_INIT; 2306 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 2307 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2308 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, tmpstr, "device_index"); 2309 if (softc->sysctl_tree == NULL) 2310 goto bailout; 2311 2312 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2313 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2314 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2315 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2316 OID_AUTO, "maxio", CTLFLAG_RD, 2317 &softc->maxio, 0, "Maximum I/O size"); 2318 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2319 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2320 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2321 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2322 OID_AUTO, "inject_eom", CTLFLAG_RW, 2323 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2324 2325 bailout: 2326 /* 2327 * Release the reference that was held when this task was enqueued. 2328 */ 2329 cam_periph_release(periph); 2330 } 2331 2332 static cam_status 2333 saregister(struct cam_periph *periph, void *arg) 2334 { 2335 struct sa_softc *softc; 2336 struct ccb_getdev *cgd; 2337 struct ccb_pathinq cpi; 2338 struct make_dev_args args; 2339 caddr_t match; 2340 char tmpstr[80]; 2341 int error; 2342 2343 cgd = (struct ccb_getdev *)arg; 2344 if (cgd == NULL) { 2345 printf("saregister: no getdev CCB, can't register device\n"); 2346 return (CAM_REQ_CMP_ERR); 2347 } 2348 2349 softc = (struct sa_softc *) 2350 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2351 if (softc == NULL) { 2352 printf("saregister: Unable to probe new device. " 2353 "Unable to allocate softc\n"); 2354 return (CAM_REQ_CMP_ERR); 2355 } 2356 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2357 softc->state = SA_STATE_NORMAL; 2358 softc->fileno = (daddr_t) -1; 2359 softc->blkno = (daddr_t) -1; 2360 softc->rep_fileno = (daddr_t) -1; 2361 softc->rep_blkno = (daddr_t) -1; 2362 softc->partition = (daddr_t) -1; 2363 softc->bop = -1; 2364 softc->eop = -1; 2365 softc->bpew = -1; 2366 2367 bioq_init(&softc->bio_queue); 2368 softc->periph = periph; 2369 periph->softc = softc; 2370 2371 /* 2372 * See if this device has any quirks. 2373 */ 2374 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2375 (caddr_t)sa_quirk_table, 2376 nitems(sa_quirk_table), 2377 sizeof(*sa_quirk_table), scsi_inquiry_match); 2378 2379 if (match != NULL) { 2380 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2381 softc->last_media_blksize = 2382 ((struct sa_quirk_entry *)match)->prefblk; 2383 } else 2384 softc->quirks = SA_QUIRK_NONE; 2385 2386 /* 2387 * Long format data for READ POSITION was introduced in SSC, which 2388 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2389 * reports that it is SCSI-2 or older, it is unlikely to support 2390 * long position data, but it might. Some drives from that era 2391 * claim to be SCSI-2, but do support long position information. 2392 * So, instead of immediately disabling long position information 2393 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2394 * then disable long position information if we get an error. 2395 */ 2396 if (cgd->inq_data.version <= SCSI_REV_CCS) 2397 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2398 2399 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2400 struct ccb_dev_advinfo cdai; 2401 struct scsi_vpd_extended_inquiry_data ext_inq; 2402 2403 bzero(&ext_inq, sizeof(ext_inq)); 2404 2405 memset(&cdai, 0, sizeof(cdai)); 2406 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2407 2408 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2409 cdai.flags = CDAI_FLAG_NONE; 2410 cdai.buftype = CDAI_TYPE_EXT_INQ; 2411 cdai.bufsiz = sizeof(ext_inq); 2412 cdai.buf = (uint8_t *)&ext_inq; 2413 xpt_action((union ccb *)&cdai); 2414 2415 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2416 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2417 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2418 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2419 softc->flags |= SA_FLAG_PROTECT_SUPP; 2420 } 2421 2422 xpt_path_inq(&cpi, periph->path); 2423 2424 /* 2425 * The SA driver supports a blocksize, but we don't know the 2426 * blocksize until we media is inserted. So, set a flag to 2427 * indicate that the blocksize is unavailable right now. 2428 */ 2429 cam_periph_unlock(periph); 2430 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2431 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2432 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2433 2434 /* 2435 * Load the default value that is either compiled in, or loaded 2436 * in the global kern.cam.sa.allow_io_split tunable. 2437 */ 2438 softc->allow_io_split = sa_allow_io_split; 2439 2440 /* 2441 * Load a per-instance tunable, if it exists. NOTE that this 2442 * tunable WILL GO AWAY in FreeBSD 11.0. 2443 */ 2444 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2445 periph->unit_number); 2446 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2447 2448 /* 2449 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2450 * the smaller of cpi.maxio or maxphys. 2451 */ 2452 if (cpi.maxio == 0) 2453 softc->maxio = DFLTPHYS; 2454 else if (cpi.maxio > maxphys) 2455 softc->maxio = maxphys; 2456 else 2457 softc->maxio = cpi.maxio; 2458 2459 /* 2460 * Record the controller's maximum I/O size so we can report it to 2461 * the user later. 2462 */ 2463 softc->cpi_maxio = cpi.maxio; 2464 2465 /* 2466 * By default we tell physio that we do not want our I/O split. 2467 * The user needs to have a 1:1 mapping between the size of his 2468 * write to a tape character device and the size of the write 2469 * that actually goes down to the drive. 2470 */ 2471 if (softc->allow_io_split == 0) 2472 softc->si_flags = SI_NOSPLIT; 2473 else 2474 softc->si_flags = 0; 2475 2476 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2477 2478 /* 2479 * If the SIM supports unmapped I/O, let physio know that we can 2480 * handle unmapped buffers. 2481 */ 2482 if (cpi.hba_misc & PIM_UNMAPPED) 2483 softc->si_flags |= SI_UNMAPPED; 2484 2485 /* 2486 * Acquire a reference to the periph before we create the devfs 2487 * instances for it. We'll release this reference once the devfs 2488 * instances have been freed. 2489 */ 2490 if (cam_periph_acquire(periph) != 0) { 2491 xpt_print(periph->path, "%s: lost periph during " 2492 "registration!\n", __func__); 2493 cam_periph_lock(periph); 2494 return (CAM_REQ_CMP_ERR); 2495 } 2496 2497 make_dev_args_init(&args); 2498 args.mda_devsw = &sa_cdevsw; 2499 args.mda_si_drv1 = softc->periph; 2500 args.mda_uid = UID_ROOT; 2501 args.mda_gid = GID_OPERATOR; 2502 args.mda_mode = 0660; 2503 2504 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2505 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2506 periph->periph_name, periph->unit_number); 2507 if (error != 0) { 2508 cam_periph_lock(periph); 2509 return (CAM_REQ_CMP_ERR); 2510 } 2511 sasetupdev(softc, softc->devs.ctl_dev); 2512 2513 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2514 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2515 periph->periph_name, periph->unit_number); 2516 if (error != 0) { 2517 cam_periph_lock(periph); 2518 return (CAM_REQ_CMP_ERR); 2519 } 2520 sasetupdev(softc, softc->devs.r_dev); 2521 2522 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2523 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2524 periph->periph_name, periph->unit_number); 2525 if (error != 0) { 2526 cam_periph_lock(periph); 2527 return (CAM_REQ_CMP_ERR); 2528 } 2529 sasetupdev(softc, softc->devs.nr_dev); 2530 2531 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2532 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2533 periph->periph_name, periph->unit_number); 2534 if (error != 0) { 2535 cam_periph_lock(periph); 2536 return (CAM_REQ_CMP_ERR); 2537 } 2538 sasetupdev(softc, softc->devs.er_dev); 2539 2540 cam_periph_lock(periph); 2541 2542 softc->density_type_bits[0] = 0; 2543 softc->density_type_bits[1] = SRDS_MEDIA; 2544 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2545 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2546 /* 2547 * Bump the peripheral refcount for the sysctl thread, in case we 2548 * get invalidated before the thread has a chance to run. 2549 */ 2550 cam_periph_acquire(periph); 2551 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2552 2553 /* 2554 * Add an async callback so that we get 2555 * notified if this device goes away. 2556 */ 2557 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2558 2559 xpt_announce_periph(periph, NULL); 2560 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2561 2562 return (CAM_REQ_CMP); 2563 } 2564 2565 static void 2566 sastart(struct cam_periph *periph, union ccb *start_ccb) 2567 { 2568 struct sa_softc *softc; 2569 2570 softc = (struct sa_softc *)periph->softc; 2571 2572 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2573 2574 switch (softc->state) { 2575 case SA_STATE_NORMAL: 2576 { 2577 /* Pull a buffer from the queue and get going on it */ 2578 struct bio *bp; 2579 2580 /* 2581 * See if there is a buf with work for us to do.. 2582 */ 2583 bp = bioq_first(&softc->bio_queue); 2584 if (bp == NULL) { 2585 xpt_release_ccb(start_ccb); 2586 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2587 || (softc->inject_eom != 0)) { 2588 struct bio *done_bp; 2589 2590 if (softc->inject_eom != 0) { 2591 softc->flags |= SA_FLAG_EOM_PENDING; 2592 softc->inject_eom = 0; 2593 /* 2594 * If we're injecting EOM for writes, we 2595 * need to keep PEWS set for 3 queries 2596 * to cover 2 position requests from the 2597 * kernel via sagetpos(), and then allow 2598 * for one for the user to see the BPEW 2599 * flag (e.g. via mt status). After that, 2600 * it will be cleared. 2601 */ 2602 if (bp->bio_cmd == BIO_WRITE) 2603 softc->set_pews_status = 3; 2604 else 2605 softc->set_pews_status = 1; 2606 } 2607 again: 2608 softc->queue_count--; 2609 bioq_remove(&softc->bio_queue, bp); 2610 bp->bio_resid = bp->bio_bcount; 2611 done_bp = bp; 2612 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2613 /* 2614 * We have two different behaviors for 2615 * writes when we hit either Early Warning 2616 * or the PEWZ (Programmable Early Warning 2617 * Zone). The default behavior is that 2618 * for all writes that are currently 2619 * queued after the write where we saw the 2620 * early warning, we will return the write 2621 * with the residual equal to the count. 2622 * i.e. tell the application that 0 bytes 2623 * were written. 2624 * 2625 * The alternate behavior, which is enabled 2626 * when eot_warn is set, is that in 2627 * addition to setting the residual equal 2628 * to the count, we will set the error 2629 * to ENOSPC. 2630 * 2631 * In either case, once queued writes are 2632 * cleared out, we clear the error flag 2633 * (see below) and the application is free to 2634 * attempt to write more. 2635 */ 2636 if (softc->eot_warn != 0) { 2637 bp->bio_flags |= BIO_ERROR; 2638 bp->bio_error = ENOSPC; 2639 } else 2640 bp->bio_error = 0; 2641 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2642 /* 2643 * This can only happen if we're reading 2644 * in fixed length mode. In this case, 2645 * we dump the rest of the list the 2646 * same way. 2647 */ 2648 bp->bio_error = 0; 2649 if (bioq_first(&softc->bio_queue) != NULL) { 2650 biodone(done_bp); 2651 goto again; 2652 } 2653 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2654 bp->bio_error = EIO; 2655 bp->bio_flags |= BIO_ERROR; 2656 } 2657 bp = bioq_first(&softc->bio_queue); 2658 /* 2659 * Only if we have no other buffers queued up 2660 * do we clear the pending error flag. 2661 */ 2662 if (bp == NULL) 2663 softc->flags &= ~SA_FLAG_ERR_PENDING; 2664 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2665 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2666 "%d more buffers queued up\n", 2667 (softc->flags & SA_FLAG_ERR_PENDING), 2668 (bp != NULL)? "not " : " ", softc->queue_count)); 2669 xpt_release_ccb(start_ccb); 2670 biodone(done_bp); 2671 } else { 2672 u_int32_t length; 2673 2674 bioq_remove(&softc->bio_queue, bp); 2675 softc->queue_count--; 2676 2677 if ((bp->bio_cmd != BIO_READ) && 2678 (bp->bio_cmd != BIO_WRITE)) { 2679 biofinish(bp, NULL, EOPNOTSUPP); 2680 xpt_release_ccb(start_ccb); 2681 return; 2682 } 2683 length = bp->bio_bcount; 2684 2685 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2686 if (softc->blk_shift != 0) { 2687 length = length >> softc->blk_shift; 2688 } else if (softc->media_blksize != 0) { 2689 length = length / softc->media_blksize; 2690 } else { 2691 bp->bio_error = EIO; 2692 xpt_print(periph->path, "zero blocksize" 2693 " for FIXED length writes?\n"); 2694 biodone(bp); 2695 break; 2696 } 2697 #if 0 2698 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2699 ("issuing a %d fixed record %s\n", 2700 length, (bp->bio_cmd == BIO_READ)? "read" : 2701 "write")); 2702 #endif 2703 } else { 2704 #if 0 2705 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2706 ("issuing a %d variable byte %s\n", 2707 length, (bp->bio_cmd == BIO_READ)? "read" : 2708 "write")); 2709 #endif 2710 } 2711 devstat_start_transaction_bio(softc->device_stats, bp); 2712 /* 2713 * Some people have theorized that we should 2714 * suppress illegal length indication if we are 2715 * running in variable block mode so that we don't 2716 * have to request sense every time our requested 2717 * block size is larger than the written block. 2718 * The residual information from the ccb allows 2719 * us to identify this situation anyway. The only 2720 * problem with this is that we will not get 2721 * information about blocks that are larger than 2722 * our read buffer unless we set the block size 2723 * in the mode page to something other than 0. 2724 * 2725 * I believe that this is a non-issue. If user apps 2726 * don't adjust their read size to match our record 2727 * size, that's just life. Anyway, the typical usage 2728 * would be to issue, e.g., 64KB reads and occasionally 2729 * have to do deal with 512 byte or 1KB intermediate 2730 * records. 2731 * 2732 * That said, though, we now support setting the 2733 * SILI bit on reads, and we set the blocksize to 4 2734 * bytes when we do that. This gives us 2735 * compatibility with software that wants this, 2736 * although the only real difference between that 2737 * and not setting the SILI bit on reads is that we 2738 * won't get a check condition on reads where our 2739 * request size is larger than the block on tape. 2740 * That probably only makes a real difference in 2741 * non-packetized SCSI, where you have to go back 2742 * to the drive to request sense and thus incur 2743 * more latency. 2744 */ 2745 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2746 MTIO_DSREG_RD : MTIO_DSREG_WR; 2747 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2748 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2749 SCSI_RW_READ : SCSI_RW_WRITE) | 2750 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2751 SCSI_RW_BIO : 0), softc->sili, 2752 (softc->flags & SA_FLAG_FIXED) != 0, length, 2753 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2754 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2755 IO_TIMEOUT); 2756 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2757 start_ccb->ccb_h.ccb_bp = bp; 2758 bp = bioq_first(&softc->bio_queue); 2759 xpt_action(start_ccb); 2760 } 2761 2762 if (bp != NULL) { 2763 /* Have more work to do, so ensure we stay scheduled */ 2764 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2765 } 2766 break; 2767 } 2768 case SA_STATE_ABNORMAL: 2769 default: 2770 panic("state 0x%x in sastart", softc->state); 2771 break; 2772 } 2773 } 2774 2775 static void 2776 sadone(struct cam_periph *periph, union ccb *done_ccb) 2777 { 2778 struct sa_softc *softc; 2779 struct ccb_scsiio *csio; 2780 struct bio *bp; 2781 int error; 2782 2783 softc = (struct sa_softc *)periph->softc; 2784 csio = &done_ccb->csio; 2785 2786 softc->dsreg = MTIO_DSREG_REST; 2787 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2788 error = 0; 2789 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2790 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2791 /* 2792 * A retry was scheduled, so just return. 2793 */ 2794 return; 2795 } 2796 } 2797 2798 if (error == EIO) { 2799 /* 2800 * Catastrophic error. Mark the tape as frozen 2801 * (we no longer know tape position). 2802 * 2803 * Return all queued I/O with EIO, and unfreeze 2804 * our queue so that future transactions that 2805 * attempt to fix this problem can get to the 2806 * device. 2807 * 2808 */ 2809 2810 softc->flags |= SA_FLAG_TAPE_FROZEN; 2811 bioq_flush(&softc->bio_queue, NULL, EIO); 2812 } 2813 if (error != 0) { 2814 bp->bio_resid = bp->bio_bcount; 2815 bp->bio_error = error; 2816 bp->bio_flags |= BIO_ERROR; 2817 /* 2818 * In the error case, position is updated in saerror. 2819 */ 2820 } else { 2821 bp->bio_resid = csio->resid; 2822 bp->bio_error = 0; 2823 if (csio->resid != 0) { 2824 bp->bio_flags |= BIO_ERROR; 2825 } 2826 if (bp->bio_cmd == BIO_WRITE) { 2827 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2828 softc->filemarks = 0; 2829 } 2830 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2831 (softc->blkno != (daddr_t) -1)) { 2832 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2833 u_int32_t l; 2834 if (softc->blk_shift != 0) { 2835 l = bp->bio_bcount >> 2836 softc->blk_shift; 2837 } else { 2838 l = bp->bio_bcount / 2839 softc->media_blksize; 2840 } 2841 softc->blkno += (daddr_t) l; 2842 } else { 2843 softc->blkno++; 2844 } 2845 } 2846 } 2847 /* 2848 * If we had an error (immediate or pending), 2849 * release the device queue now. 2850 */ 2851 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2852 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2853 if (error || bp->bio_resid) { 2854 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2855 ("error %d resid %ld count %ld\n", error, 2856 bp->bio_resid, bp->bio_bcount)); 2857 } 2858 biofinish(bp, softc->device_stats, 0); 2859 xpt_release_ccb(done_ccb); 2860 } 2861 2862 /* 2863 * Mount the tape (make sure it's ready for I/O). 2864 */ 2865 static int 2866 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2867 { 2868 struct sa_softc *softc; 2869 union ccb *ccb; 2870 int error; 2871 2872 /* 2873 * oflags can be checked for 'kind' of open (read-only check) - later 2874 * dev can be checked for a control-mode or compression open - later 2875 */ 2876 UNUSED_PARAMETER(oflags); 2877 UNUSED_PARAMETER(dev); 2878 2879 softc = (struct sa_softc *)periph->softc; 2880 2881 /* 2882 * This should determine if something has happened since the last 2883 * open/mount that would invalidate the mount. We do *not* want 2884 * to retry this command- we just want the status. But we only 2885 * do this if we're mounted already- if we're not mounted, 2886 * we don't care about the unit read state and can instead use 2887 * this opportunity to attempt to reserve the tape unit. 2888 */ 2889 2890 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2891 ccb = cam_periph_getccb(periph, 1); 2892 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2893 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2894 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2895 softc->device_stats); 2896 if (error == ENXIO) { 2897 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2898 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2899 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2900 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2901 softc->device_stats); 2902 } else if (error) { 2903 /* 2904 * We don't need to freeze the tape because we 2905 * will now attempt to rewind/load it. 2906 */ 2907 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2908 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2909 xpt_print(periph->path, 2910 "error %d on TUR in samount\n", error); 2911 } 2912 } 2913 } else { 2914 error = sareservereleaseunit(periph, TRUE); 2915 if (error) { 2916 return (error); 2917 } 2918 ccb = cam_periph_getccb(periph, 1); 2919 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2920 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2921 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2922 softc->device_stats); 2923 } 2924 2925 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2926 struct scsi_read_block_limits_data *rblim = NULL; 2927 int comp_enabled, comp_supported; 2928 u_int8_t write_protect, guessing = 0; 2929 2930 /* 2931 * Clear out old state. 2932 */ 2933 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2934 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2935 softc->filemarks = 0; 2936 2937 /* 2938 * *Very* first off, make sure we're loaded to BOT. 2939 */ 2940 scsi_load_unload(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 2941 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2942 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2943 softc->device_stats); 2944 2945 /* 2946 * In case this doesn't work, do a REWIND instead 2947 */ 2948 if (error) { 2949 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 2950 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2951 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2952 softc->device_stats); 2953 } 2954 if (error) { 2955 xpt_release_ccb(ccb); 2956 goto exit; 2957 } 2958 2959 /* 2960 * Do a dummy test read to force access to the 2961 * media so that the drive will really know what's 2962 * there. We actually don't really care what the 2963 * blocksize on tape is and don't expect to really 2964 * read a full record. 2965 */ 2966 rblim = (struct scsi_read_block_limits_data *) 2967 malloc(8192, M_SCSISA, M_NOWAIT); 2968 if (rblim == NULL) { 2969 xpt_print(periph->path, "no memory for test read\n"); 2970 xpt_release_ccb(ccb); 2971 error = ENOMEM; 2972 goto exit; 2973 } 2974 2975 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2976 scsi_sa_read_write(&ccb->csio, 0, NULL, 2977 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2978 (void *) rblim, 8192, SSD_FULL_SIZE, 2979 IO_TIMEOUT); 2980 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2981 softc->device_stats); 2982 scsi_rewind(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 2983 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2984 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2985 SF_NO_PRINT | SF_RETRY_UA, 2986 softc->device_stats); 2987 if (error) { 2988 xpt_print(periph->path, 2989 "unable to rewind after test read\n"); 2990 xpt_release_ccb(ccb); 2991 goto exit; 2992 } 2993 } 2994 2995 /* 2996 * Next off, determine block limits. 2997 */ 2998 scsi_read_block_limits(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 2999 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3000 3001 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3002 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3003 3004 xpt_release_ccb(ccb); 3005 3006 if (error != 0) { 3007 /* 3008 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3009 * a MANDATORY command. Anyway- it doesn't matter- 3010 * we can proceed anyway. 3011 */ 3012 softc->blk_gran = 0; 3013 softc->max_blk = ~0; 3014 softc->min_blk = 0; 3015 } else { 3016 if (softc->scsi_rev >= SCSI_REV_SPC) { 3017 softc->blk_gran = RBL_GRAN(rblim); 3018 } else { 3019 softc->blk_gran = 0; 3020 } 3021 /* 3022 * We take max_blk == min_blk to mean a default to 3023 * fixed mode- but note that whatever we get out of 3024 * sagetparams below will actually determine whether 3025 * we are actually *in* fixed mode. 3026 */ 3027 softc->max_blk = scsi_3btoul(rblim->maximum); 3028 softc->min_blk = scsi_2btoul(rblim->minimum); 3029 } 3030 /* 3031 * Next, perform a mode sense to determine 3032 * current density, blocksize, compression etc. 3033 */ 3034 error = sagetparams(periph, SA_PARAM_ALL, 3035 &softc->media_blksize, 3036 &softc->media_density, 3037 &softc->media_numblks, 3038 &softc->buffer_mode, &write_protect, 3039 &softc->speed, &comp_supported, 3040 &comp_enabled, &softc->comp_algorithm, 3041 NULL, NULL, 0, 0); 3042 3043 if (error != 0) { 3044 /* 3045 * We could work a little harder here. We could 3046 * adjust our attempts to get information. It 3047 * might be an ancient tape drive. If someone 3048 * nudges us, we'll do that. 3049 */ 3050 goto exit; 3051 } 3052 3053 /* 3054 * If no quirk has determined that this is a device that is 3055 * preferred to be in fixed or variable mode, now is the time 3056 * to find out. 3057 */ 3058 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3059 guessing = 1; 3060 /* 3061 * This could be expensive to find out. Luckily we 3062 * only need to do this once. If we start out in 3063 * 'default' mode, try and set ourselves to one 3064 * of the densities that would determine a wad 3065 * of other stuff. Go from highest to lowest. 3066 */ 3067 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3068 int i; 3069 static u_int8_t ctry[] = { 3070 SCSI_DENSITY_HALFINCH_PE, 3071 SCSI_DENSITY_HALFINCH_6250C, 3072 SCSI_DENSITY_HALFINCH_6250, 3073 SCSI_DENSITY_HALFINCH_1600, 3074 SCSI_DENSITY_HALFINCH_800, 3075 SCSI_DENSITY_QIC_4GB, 3076 SCSI_DENSITY_QIC_2GB, 3077 SCSI_DENSITY_QIC_525_320, 3078 SCSI_DENSITY_QIC_150, 3079 SCSI_DENSITY_QIC_120, 3080 SCSI_DENSITY_QIC_24, 3081 SCSI_DENSITY_QIC_11_9TRK, 3082 SCSI_DENSITY_QIC_11_4TRK, 3083 SCSI_DENSITY_QIC_1320, 3084 SCSI_DENSITY_QIC_3080, 3085 0 3086 }; 3087 for (i = 0; ctry[i]; i++) { 3088 error = sasetparams(periph, 3089 SA_PARAM_DENSITY, 0, ctry[i], 3090 0, SF_NO_PRINT); 3091 if (error == 0) { 3092 softc->media_density = ctry[i]; 3093 break; 3094 } 3095 } 3096 } 3097 switch (softc->media_density) { 3098 case SCSI_DENSITY_QIC_11_4TRK: 3099 case SCSI_DENSITY_QIC_11_9TRK: 3100 case SCSI_DENSITY_QIC_24: 3101 case SCSI_DENSITY_QIC_120: 3102 case SCSI_DENSITY_QIC_150: 3103 case SCSI_DENSITY_QIC_525_320: 3104 case SCSI_DENSITY_QIC_1320: 3105 case SCSI_DENSITY_QIC_3080: 3106 softc->quirks &= ~SA_QUIRK_2FM; 3107 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3108 softc->last_media_blksize = 512; 3109 break; 3110 case SCSI_DENSITY_QIC_4GB: 3111 case SCSI_DENSITY_QIC_2GB: 3112 softc->quirks &= ~SA_QUIRK_2FM; 3113 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3114 softc->last_media_blksize = 1024; 3115 break; 3116 default: 3117 softc->last_media_blksize = 3118 softc->media_blksize; 3119 softc->quirks |= SA_QUIRK_VARIABLE; 3120 break; 3121 } 3122 } 3123 3124 /* 3125 * If no quirk has determined that this is a device that needs 3126 * to have 2 Filemarks at EOD, now is the time to find out. 3127 */ 3128 3129 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3130 switch (softc->media_density) { 3131 case SCSI_DENSITY_HALFINCH_800: 3132 case SCSI_DENSITY_HALFINCH_1600: 3133 case SCSI_DENSITY_HALFINCH_6250: 3134 case SCSI_DENSITY_HALFINCH_6250C: 3135 case SCSI_DENSITY_HALFINCH_PE: 3136 softc->quirks &= ~SA_QUIRK_1FM; 3137 softc->quirks |= SA_QUIRK_2FM; 3138 break; 3139 default: 3140 break; 3141 } 3142 } 3143 3144 /* 3145 * Now validate that some info we got makes sense. 3146 */ 3147 if ((softc->max_blk < softc->media_blksize) || 3148 (softc->min_blk > softc->media_blksize && 3149 softc->media_blksize)) { 3150 xpt_print(periph->path, 3151 "BLOCK LIMITS (%d..%d) could not match current " 3152 "block settings (%d)- adjusting\n", softc->min_blk, 3153 softc->max_blk, softc->media_blksize); 3154 softc->max_blk = softc->min_blk = 3155 softc->media_blksize; 3156 } 3157 3158 /* 3159 * Now put ourselves into the right frame of mind based 3160 * upon quirks... 3161 */ 3162 tryagain: 3163 /* 3164 * If we want to be in FIXED mode and our current blocksize 3165 * is not equal to our last blocksize (if nonzero), try and 3166 * set ourselves to this last blocksize (as the 'preferred' 3167 * block size). The initial quirkmatch at registry sets the 3168 * initial 'last' blocksize. If, for whatever reason, this 3169 * 'last' blocksize is zero, set the blocksize to 512, 3170 * or min_blk if that's larger. 3171 */ 3172 if ((softc->quirks & SA_QUIRK_FIXED) && 3173 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3174 (softc->media_blksize != softc->last_media_blksize)) { 3175 softc->media_blksize = softc->last_media_blksize; 3176 if (softc->media_blksize == 0) { 3177 softc->media_blksize = 512; 3178 if (softc->media_blksize < softc->min_blk) { 3179 softc->media_blksize = softc->min_blk; 3180 } 3181 } 3182 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3183 softc->media_blksize, 0, 0, SF_NO_PRINT); 3184 if (error) { 3185 xpt_print(periph->path, 3186 "unable to set fixed blocksize to %d\n", 3187 softc->media_blksize); 3188 goto exit; 3189 } 3190 } 3191 3192 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3193 (softc->media_blksize != 0)) { 3194 softc->last_media_blksize = softc->media_blksize; 3195 softc->media_blksize = 0; 3196 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3197 0, 0, 0, SF_NO_PRINT); 3198 if (error) { 3199 /* 3200 * If this fails and we were guessing, just 3201 * assume that we got it wrong and go try 3202 * fixed block mode. Don't even check against 3203 * density code at this point. 3204 */ 3205 if (guessing) { 3206 softc->quirks &= ~SA_QUIRK_VARIABLE; 3207 softc->quirks |= SA_QUIRK_FIXED; 3208 if (softc->last_media_blksize == 0) 3209 softc->last_media_blksize = 512; 3210 goto tryagain; 3211 } 3212 xpt_print(periph->path, 3213 "unable to set variable blocksize\n"); 3214 goto exit; 3215 } 3216 } 3217 3218 /* 3219 * Now that we have the current block size, 3220 * set up some parameters for sastart's usage. 3221 */ 3222 if (softc->media_blksize) { 3223 softc->flags |= SA_FLAG_FIXED; 3224 if (powerof2(softc->media_blksize)) { 3225 softc->blk_shift = 3226 ffs(softc->media_blksize) - 1; 3227 softc->blk_mask = softc->media_blksize - 1; 3228 } else { 3229 softc->blk_mask = ~0; 3230 softc->blk_shift = 0; 3231 } 3232 } else { 3233 /* 3234 * The SCSI-3 spec allows 0 to mean "unspecified". 3235 * The SCSI-1 spec allows 0 to mean 'infinite'. 3236 * 3237 * Either works here. 3238 */ 3239 if (softc->max_blk == 0) { 3240 softc->max_blk = ~0; 3241 } 3242 softc->blk_shift = 0; 3243 if (softc->blk_gran != 0) { 3244 softc->blk_mask = softc->blk_gran - 1; 3245 } else { 3246 softc->blk_mask = 0; 3247 } 3248 } 3249 3250 if (write_protect) 3251 softc->flags |= SA_FLAG_TAPE_WP; 3252 3253 if (comp_supported) { 3254 if (softc->saved_comp_algorithm == 0) 3255 softc->saved_comp_algorithm = 3256 softc->comp_algorithm; 3257 softc->flags |= SA_FLAG_COMP_SUPP; 3258 if (comp_enabled) 3259 softc->flags |= SA_FLAG_COMP_ENABLED; 3260 } else 3261 softc->flags |= SA_FLAG_COMP_UNSUPP; 3262 3263 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3264 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3265 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3266 0, 0, SF_NO_PRINT); 3267 if (error == 0) { 3268 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3269 } else { 3270 xpt_print(periph->path, 3271 "unable to set buffered mode\n"); 3272 } 3273 error = 0; /* not an error */ 3274 } 3275 3276 if (error == 0) { 3277 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3278 } 3279 exit: 3280 if (rblim != NULL) 3281 free(rblim, M_SCSISA); 3282 3283 if (error != 0) { 3284 softc->dsreg = MTIO_DSREG_NIL; 3285 } else { 3286 softc->fileno = softc->blkno = 0; 3287 softc->rep_fileno = softc->rep_blkno = -1; 3288 softc->partition = 0; 3289 softc->dsreg = MTIO_DSREG_REST; 3290 } 3291 #ifdef SA_1FM_AT_EOD 3292 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3293 softc->quirks |= SA_QUIRK_1FM; 3294 #else 3295 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3296 softc->quirks |= SA_QUIRK_2FM; 3297 #endif 3298 } else 3299 xpt_release_ccb(ccb); 3300 3301 /* 3302 * If we return an error, we're not mounted any more, 3303 * so release any device reservation. 3304 */ 3305 if (error != 0) { 3306 (void) sareservereleaseunit(periph, FALSE); 3307 } else { 3308 /* 3309 * Clear I/O residual. 3310 */ 3311 softc->last_io_resid = 0; 3312 softc->last_ctl_resid = 0; 3313 } 3314 return (error); 3315 } 3316 3317 /* 3318 * How many filemarks do we need to write if we were to terminate the 3319 * tape session right now? Note that this can be a negative number 3320 */ 3321 3322 static int 3323 samarkswanted(struct cam_periph *periph) 3324 { 3325 int markswanted; 3326 struct sa_softc *softc; 3327 3328 softc = (struct sa_softc *)periph->softc; 3329 markswanted = 0; 3330 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3331 markswanted++; 3332 if (softc->quirks & SA_QUIRK_2FM) 3333 markswanted++; 3334 } 3335 markswanted -= softc->filemarks; 3336 return (markswanted); 3337 } 3338 3339 static int 3340 sacheckeod(struct cam_periph *periph) 3341 { 3342 int error; 3343 int markswanted; 3344 3345 markswanted = samarkswanted(periph); 3346 3347 if (markswanted > 0) { 3348 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3349 } else { 3350 error = 0; 3351 } 3352 return (error); 3353 } 3354 3355 static int 3356 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3357 { 3358 static const char *toobig = 3359 "%d-byte tape record bigger than supplied buffer\n"; 3360 struct cam_periph *periph; 3361 struct sa_softc *softc; 3362 struct ccb_scsiio *csio; 3363 struct scsi_sense_data *sense; 3364 uint64_t resid = 0; 3365 int64_t info = 0; 3366 cam_status status; 3367 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3368 int sense_len; 3369 uint8_t stream_bits; 3370 3371 periph = xpt_path_periph(ccb->ccb_h.path); 3372 softc = (struct sa_softc *)periph->softc; 3373 csio = &ccb->csio; 3374 sense = &csio->sense_data; 3375 sense_len = csio->sense_len - csio->sense_resid; 3376 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3377 &asc, &ascq, /*show_errors*/ 1); 3378 if (asc != -1 && ascq != -1) 3379 aqvalid = 1; 3380 else 3381 aqvalid = 0; 3382 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3383 stream_valid = 1; 3384 else 3385 stream_valid = 0; 3386 error = 0; 3387 3388 status = csio->ccb_h.status & CAM_STATUS_MASK; 3389 3390 /* 3391 * Calculate/latch up, any residuals... We do this in a funny 2-step 3392 * so we can print stuff here if we have CAM_DEBUG enabled for this 3393 * unit. 3394 */ 3395 if (status == CAM_SCSI_STATUS_ERROR) { 3396 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3397 &info) == 0) { 3398 if ((softc->flags & SA_FLAG_FIXED) != 0) 3399 resid *= softc->media_blksize; 3400 } else { 3401 resid = csio->dxfer_len; 3402 info = resid; 3403 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3404 if (softc->media_blksize) 3405 info /= softc->media_blksize; 3406 } 3407 } 3408 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3409 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3410 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3411 sizeof (struct scsi_sense_data)); 3412 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3413 (int) csio->cdb_len); 3414 softc->last_io_resid = resid; 3415 softc->last_resid_was_io = 1; 3416 } else { 3417 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3418 sizeof (struct scsi_sense_data)); 3419 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3420 (int) csio->cdb_len); 3421 softc->last_ctl_resid = resid; 3422 softc->last_resid_was_io = 0; 3423 } 3424 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3425 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3426 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3427 sense_key, asc, ascq, status, 3428 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3429 csio->dxfer_len)); 3430 } else { 3431 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3432 ("Cam Status 0x%x\n", status)); 3433 } 3434 3435 switch (status) { 3436 case CAM_REQ_CMP: 3437 return (0); 3438 case CAM_SCSI_STATUS_ERROR: 3439 /* 3440 * If a read/write command, we handle it here. 3441 */ 3442 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3443 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3444 break; 3445 } 3446 /* 3447 * If this was just EOM/EOP, Filemark, Setmark, ILI or 3448 * PEW detected on a non read/write command, we assume 3449 * it's not an error and propagate the residual and return. 3450 */ 3451 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5) 3452 || (ascq == 0x07))) 3453 || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3454 csio->resid = resid; 3455 QFRLS(ccb); 3456 return (0); 3457 } 3458 /* 3459 * Otherwise, we let the common code handle this. 3460 */ 3461 return (cam_periph_error(ccb, cflgs, sflgs)); 3462 3463 /* 3464 * XXX: To Be Fixed 3465 * We cannot depend upon CAM honoring retry counts for these. 3466 */ 3467 case CAM_SCSI_BUS_RESET: 3468 case CAM_BDR_SENT: 3469 if (ccb->ccb_h.retry_count <= 0) { 3470 return (EIO); 3471 } 3472 /* FALLTHROUGH */ 3473 default: 3474 return (cam_periph_error(ccb, cflgs, sflgs)); 3475 } 3476 3477 /* 3478 * Handle filemark, end of tape, mismatched record sizes.... 3479 * From this point out, we're only handling read/write cases. 3480 * Handle writes && reads differently. 3481 */ 3482 3483 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3484 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3485 csio->resid = resid; 3486 error = ENOSPC; 3487 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3488 softc->flags |= SA_FLAG_EOM_PENDING; 3489 /* 3490 * Grotesque as it seems, the few times 3491 * I've actually seen a non-zero resid, 3492 * the tape drive actually lied and had 3493 * written all the data!. 3494 */ 3495 csio->resid = 0; 3496 } 3497 } else { 3498 csio->resid = resid; 3499 if (sense_key == SSD_KEY_BLANK_CHECK) { 3500 if (softc->quirks & SA_QUIRK_1FM) { 3501 error = 0; 3502 softc->flags |= SA_FLAG_EOM_PENDING; 3503 } else { 3504 error = EIO; 3505 } 3506 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3507 if (softc->flags & SA_FLAG_FIXED) { 3508 error = -1; 3509 softc->flags |= SA_FLAG_EOF_PENDING; 3510 } 3511 /* 3512 * Unconditionally, if we detected a filemark on a read, 3513 * mark that we've run moved a file ahead. 3514 */ 3515 if (softc->fileno != (daddr_t) -1) { 3516 softc->fileno++; 3517 softc->blkno = 0; 3518 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3519 } 3520 } 3521 } 3522 3523 /* 3524 * Incorrect Length usually applies to read, but can apply to writes. 3525 */ 3526 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3527 if (info < 0) { 3528 xpt_print(csio->ccb_h.path, toobig, 3529 csio->dxfer_len - info); 3530 csio->resid = csio->dxfer_len; 3531 error = EIO; 3532 } else { 3533 csio->resid = resid; 3534 if (softc->flags & SA_FLAG_FIXED) { 3535 softc->flags |= SA_FLAG_EIO_PENDING; 3536 } 3537 /* 3538 * Bump the block number if we hadn't seen a filemark. 3539 * Do this independent of errors (we've moved anyway). 3540 */ 3541 if ((stream_valid == 0) || 3542 (stream_bits & SSD_FILEMARK) == 0) { 3543 if (softc->blkno != (daddr_t) -1) { 3544 softc->blkno++; 3545 csio->ccb_h.ccb_pflags |= 3546 SA_POSITION_UPDATED; 3547 } 3548 } 3549 } 3550 } 3551 3552 if (error <= 0) { 3553 /* 3554 * Unfreeze the queue if frozen as we're not returning anything 3555 * to our waiters that would indicate an I/O error has occurred 3556 * (yet). 3557 */ 3558 QFRLS(ccb); 3559 error = 0; 3560 } 3561 return (error); 3562 } 3563 3564 static int 3565 sagetparams(struct cam_periph *periph, sa_params params_to_get, 3566 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3567 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3568 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3569 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3570 int dp_size, int prot_changeable) 3571 { 3572 union ccb *ccb; 3573 void *mode_buffer; 3574 struct scsi_mode_header_6 *mode_hdr; 3575 struct scsi_mode_blk_desc *mode_blk; 3576 int mode_buffer_len; 3577 struct sa_softc *softc; 3578 u_int8_t cpage; 3579 int error; 3580 cam_status status; 3581 3582 softc = (struct sa_softc *)periph->softc; 3583 ccb = cam_periph_getccb(periph, 1); 3584 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3585 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3586 else 3587 cpage = SA_DATA_COMPRESSION_PAGE; 3588 3589 retry: 3590 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3591 3592 if (params_to_get & SA_PARAM_COMPRESSION) { 3593 if (softc->quirks & SA_QUIRK_NOCOMP) { 3594 *comp_supported = FALSE; 3595 params_to_get &= ~SA_PARAM_COMPRESSION; 3596 } else 3597 mode_buffer_len += sizeof (sa_comp_t); 3598 } 3599 3600 /* XXX Fix M_NOWAIT */ 3601 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3602 if (mode_buffer == NULL) { 3603 xpt_release_ccb(ccb); 3604 return (ENOMEM); 3605 } 3606 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3607 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3608 3609 /* it is safe to retry this */ 3610 scsi_mode_sense(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3611 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3612 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3613 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3614 3615 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3616 softc->device_stats); 3617 3618 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3619 3620 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3621 /* 3622 * Hmm. Let's see if we can try another page... 3623 * If we've already done that, give up on compression 3624 * for this device and remember this for the future 3625 * and attempt the request without asking for compression 3626 * info. 3627 */ 3628 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3629 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3630 goto retry; 3631 } 3632 softc->quirks |= SA_QUIRK_NOCOMP; 3633 free(mode_buffer, M_SCSISA); 3634 goto retry; 3635 } else if (status == CAM_SCSI_STATUS_ERROR) { 3636 /* Tell the user about the fatal error. */ 3637 scsi_sense_print(&ccb->csio); 3638 goto sagetparamsexit; 3639 } 3640 3641 /* 3642 * If the user only wants the compression information, and 3643 * the device doesn't send back the block descriptor, it's 3644 * no big deal. If the user wants more than just 3645 * compression, though, and the device doesn't pass back the 3646 * block descriptor, we need to send another mode sense to 3647 * get the block descriptor. 3648 */ 3649 if ((mode_hdr->blk_desc_len == 0) && 3650 (params_to_get & SA_PARAM_COMPRESSION) && 3651 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3652 /* 3653 * Decrease the mode buffer length by the size of 3654 * the compression page, to make sure the data 3655 * there doesn't get overwritten. 3656 */ 3657 mode_buffer_len -= sizeof (sa_comp_t); 3658 3659 /* 3660 * Now move the compression page that we presumably 3661 * got back down the memory chunk a little bit so 3662 * it doesn't get spammed. 3663 */ 3664 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3665 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3666 3667 /* 3668 * Now, we issue another mode sense and just ask 3669 * for the block descriptor, etc. 3670 */ 3671 3672 scsi_mode_sense(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3673 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3674 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3675 SCSIOP_TIMEOUT); 3676 3677 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3678 softc->device_stats); 3679 3680 if (error != 0) 3681 goto sagetparamsexit; 3682 } 3683 3684 if (params_to_get & SA_PARAM_BLOCKSIZE) 3685 *blocksize = scsi_3btoul(mode_blk->blklen); 3686 3687 if (params_to_get & SA_PARAM_NUMBLOCKS) 3688 *numblocks = scsi_3btoul(mode_blk->nblocks); 3689 3690 if (params_to_get & SA_PARAM_BUFF_MODE) 3691 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 3692 3693 if (params_to_get & SA_PARAM_DENSITY) 3694 *density = mode_blk->density; 3695 3696 if (params_to_get & SA_PARAM_WP) 3697 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 3698 3699 if (params_to_get & SA_PARAM_SPEED) 3700 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 3701 3702 if (params_to_get & SA_PARAM_COMPRESSION) { 3703 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 3704 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3705 struct scsi_data_compression_page *cp = &ntcs->dcomp; 3706 *comp_supported = 3707 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 3708 *comp_enabled = 3709 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 3710 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 3711 } else { 3712 struct scsi_dev_conf_page *cp = &ntcs->dconf; 3713 /* 3714 * We don't really know whether this device supports 3715 * Data Compression if the algorithm field is 3716 * zero. Just say we do. 3717 */ 3718 *comp_supported = TRUE; 3719 *comp_enabled = 3720 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 3721 *comp_algorithm = cp->sel_comp_alg; 3722 } 3723 if (tcs != NULL) 3724 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 3725 } 3726 3727 if ((params_to_get & SA_PARAM_DENSITY_EXT) 3728 && (softc->scsi_rev >= SCSI_REV_SPC)) { 3729 int i; 3730 3731 for (i = 0; i < SA_DENSITY_TYPES; i++) { 3732 scsi_report_density_support(&ccb->csio, 3733 /*retries*/ 1, 3734 /*cbfcnp*/ NULL, 3735 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3736 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 3737 /*medium_type*/ softc->density_type_bits[i] & 3738 SRDS_MEDIUM_TYPE, 3739 /*data_ptr*/ softc->density_info[i], 3740 /*length*/ sizeof(softc->density_info[i]), 3741 /*sense_len*/ SSD_FULL_SIZE, 3742 /*timeout*/ REP_DENSITY_TIMEOUT); 3743 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3744 softc->device_stats); 3745 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3746 3747 /* 3748 * Some tape drives won't support this command at 3749 * all, but hopefully we'll minimize that with the 3750 * check for SPC or greater support above. If they 3751 * don't support the default report (neither the 3752 * MEDIA or MEDIUM_TYPE bits set), then there is 3753 * really no point in continuing on to look for 3754 * other reports. 3755 */ 3756 if ((error != 0) 3757 || (status != CAM_REQ_CMP)) { 3758 error = 0; 3759 softc->density_info_valid[i] = 0; 3760 if (softc->density_type_bits[i] == 0) 3761 break; 3762 else 3763 continue; 3764 } 3765 softc->density_info_valid[i] = ccb->csio.dxfer_len - 3766 ccb->csio.resid; 3767 } 3768 } 3769 3770 /* 3771 * Get logical block protection parameters if the drive supports it. 3772 */ 3773 if ((params_to_get & SA_PARAM_LBP) 3774 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 3775 struct scsi_mode_header_10 *mode10_hdr; 3776 struct scsi_control_data_prot_subpage *dp_page; 3777 struct scsi_mode_sense_10 *cdb; 3778 struct sa_prot_state *prot; 3779 int dp_len, returned_len; 3780 3781 if (dp_size == 0) 3782 dp_size = sizeof(*dp_page); 3783 3784 dp_len = sizeof(*mode10_hdr) + dp_size; 3785 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3786 if (mode10_hdr == NULL) { 3787 error = ENOMEM; 3788 goto sagetparamsexit; 3789 } 3790 3791 scsi_mode_sense_len(&ccb->csio, 3792 /*retries*/ 5, 3793 /*cbfcnp*/ NULL, 3794 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3795 /*dbd*/ TRUE, 3796 /*page_code*/ (prot_changeable == 0) ? 3797 SMS_PAGE_CTRL_CURRENT : 3798 SMS_PAGE_CTRL_CHANGEABLE, 3799 /*page*/ SMS_CONTROL_MODE_PAGE, 3800 /*param_buf*/ (uint8_t *)mode10_hdr, 3801 /*param_len*/ dp_len, 3802 /*minimum_cmd_size*/ 10, 3803 /*sense_len*/ SSD_FULL_SIZE, 3804 /*timeout*/ SCSIOP_TIMEOUT); 3805 /* 3806 * XXX KDM we need to be able to set the subpage in the 3807 * fill function. 3808 */ 3809 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 3810 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 3811 3812 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3813 softc->device_stats); 3814 if (error != 0) { 3815 free(mode10_hdr, M_SCSISA); 3816 goto sagetparamsexit; 3817 } 3818 3819 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3820 if (status != CAM_REQ_CMP) { 3821 error = EINVAL; 3822 free(mode10_hdr, M_SCSISA); 3823 goto sagetparamsexit; 3824 } 3825 3826 /* 3827 * The returned data length at least has to be long enough 3828 * for us to look at length in the mode page header. 3829 */ 3830 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 3831 if (returned_len < sizeof(mode10_hdr->data_length)) { 3832 error = EINVAL; 3833 free(mode10_hdr, M_SCSISA); 3834 goto sagetparamsexit; 3835 } 3836 3837 returned_len = min(returned_len, 3838 sizeof(mode10_hdr->data_length) + 3839 scsi_2btoul(mode10_hdr->data_length)); 3840 3841 dp_page = (struct scsi_control_data_prot_subpage *) 3842 &mode10_hdr[1]; 3843 3844 /* 3845 * We also have to have enough data to include the prot_bits 3846 * in the subpage. 3847 */ 3848 if (returned_len < (sizeof(*mode10_hdr) + 3849 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 3850 + sizeof(dp_page->prot_bits))) { 3851 error = EINVAL; 3852 free(mode10_hdr, M_SCSISA); 3853 goto sagetparamsexit; 3854 } 3855 3856 prot = &softc->prot_info.cur_prot_state; 3857 prot->prot_method = dp_page->prot_method; 3858 prot->pi_length = dp_page->pi_length & 3859 SA_CTRL_DP_PI_LENGTH_MASK; 3860 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 3861 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 3862 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 3863 prot->initialized = 1; 3864 3865 if (prot_page != NULL) 3866 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 3867 sizeof(*dp_page))); 3868 3869 free(mode10_hdr, M_SCSISA); 3870 } 3871 3872 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3873 int idx; 3874 char *xyz = mode_buffer; 3875 xpt_print_path(periph->path); 3876 printf("Mode Sense Data="); 3877 for (idx = 0; idx < mode_buffer_len; idx++) 3878 printf(" 0x%02x", xyz[idx] & 0xff); 3879 printf("\n"); 3880 } 3881 3882 sagetparamsexit: 3883 3884 xpt_release_ccb(ccb); 3885 free(mode_buffer, M_SCSISA); 3886 return (error); 3887 } 3888 3889 /* 3890 * Set protection information to the pending protection information stored 3891 * in the softc. 3892 */ 3893 static int 3894 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 3895 { 3896 struct sa_softc *softc; 3897 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 3898 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 3899 union ccb *ccb; 3900 uint8_t current_speed; 3901 size_t dp_size, dp_page_length; 3902 int dp_len, buff_mode; 3903 int error; 3904 3905 softc = (struct sa_softc *)periph->softc; 3906 mode10_hdr = NULL; 3907 mode10_changeable = NULL; 3908 ccb = NULL; 3909 3910 /* 3911 * Start off with the size set to the actual length of the page 3912 * that we have defined. 3913 */ 3914 dp_size = sizeof(*dp_changeable); 3915 dp_page_length = dp_size - 3916 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 3917 3918 retry_length: 3919 3920 dp_len = sizeof(*mode10_changeable) + dp_size; 3921 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3922 if (mode10_changeable == NULL) { 3923 error = ENOMEM; 3924 goto bailout; 3925 } 3926 3927 dp_changeable = 3928 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 3929 3930 /* 3931 * First get the data protection page changeable parameters mask. 3932 * We need to know which parameters the drive supports changing. 3933 * We also need to know what the drive claims that its page length 3934 * is. The reason is that IBM drives in particular are very picky 3935 * about the page length. They want it (the length set in the 3936 * page structure itself) to be 28 bytes, and they want the 3937 * parameter list length specified in the mode select header to be 3938 * 40 bytes. So, to work with IBM drives as well as any other tape 3939 * drive, find out what the drive claims the page length is, and 3940 * make sure that we match that. 3941 */ 3942 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3943 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3944 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 3945 if (error != 0) 3946 goto bailout; 3947 3948 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 3949 dp_page_length = scsi_2btoul(dp_changeable->length); 3950 dp_size = dp_page_length + 3951 __offsetof(struct scsi_control_data_prot_subpage, 3952 prot_method); 3953 free(mode10_changeable, M_SCSISA); 3954 mode10_changeable = NULL; 3955 goto retry_length; 3956 } 3957 3958 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3959 if (mode10_hdr == NULL) { 3960 error = ENOMEM; 3961 goto bailout; 3962 } 3963 3964 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 3965 3966 /* 3967 * Now grab the actual current settings in the page. 3968 */ 3969 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3970 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3971 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 3972 if (error != 0) 3973 goto bailout; 3974 3975 /* These two fields need to be 0 for MODE SELECT */ 3976 scsi_ulto2b(0, mode10_hdr->data_length); 3977 mode10_hdr->medium_type = 0; 3978 /* We are not including a block descriptor */ 3979 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 3980 3981 mode10_hdr->dev_spec = current_speed; 3982 /* if set, set single-initiator buffering mode */ 3983 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 3984 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 3985 } 3986 3987 /* 3988 * For each field, make sure that the drive allows changing it 3989 * before bringing in the user's setting. 3990 */ 3991 if (dp_changeable->prot_method != 0) 3992 dp_page->prot_method = new_prot->prot_method; 3993 3994 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 3995 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 3996 dp_page->pi_length |= (new_prot->pi_length & 3997 SA_CTRL_DP_PI_LENGTH_MASK); 3998 } 3999 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 4000 if (new_prot->lbp_w) 4001 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 4002 else 4003 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 4004 } 4005 4006 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 4007 if (new_prot->lbp_r) 4008 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 4009 else 4010 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 4011 } 4012 4013 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 4014 if (new_prot->rbdp) 4015 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 4016 else 4017 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 4018 } 4019 4020 ccb = cam_periph_getccb(periph, 1); 4021 4022 scsi_mode_select_len(&ccb->csio, 4023 /*retries*/ 5, 4024 /*cbfcnp*/ NULL, 4025 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4026 /*scsi_page_fmt*/ TRUE, 4027 /*save_pages*/ FALSE, 4028 /*param_buf*/ (uint8_t *)mode10_hdr, 4029 /*param_len*/ dp_len, 4030 /*minimum_cmd_size*/ 10, 4031 /*sense_len*/ SSD_FULL_SIZE, 4032 /*timeout*/ SCSIOP_TIMEOUT); 4033 4034 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4035 if (error != 0) 4036 goto bailout; 4037 4038 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4039 error = EINVAL; 4040 goto bailout; 4041 } 4042 4043 /* 4044 * The operation was successful. We could just copy the settings 4045 * the user requested, but just in case the drive ignored some of 4046 * our settings, let's ask for status again. 4047 */ 4048 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4049 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4050 NULL, NULL, dp_page, dp_size, 0); 4051 4052 bailout: 4053 if (ccb != NULL) 4054 xpt_release_ccb(ccb); 4055 free(mode10_hdr, M_SCSISA); 4056 free(mode10_changeable, M_SCSISA); 4057 return (error); 4058 } 4059 4060 /* 4061 * The purpose of this function is to set one of four different parameters 4062 * for a tape drive: 4063 * - blocksize 4064 * - density 4065 * - compression / compression algorithm 4066 * - buffering mode 4067 * 4068 * The assumption is that this will be called from saioctl(), and therefore 4069 * from a process context. Thus the waiting malloc calls below. If that 4070 * assumption ever changes, the malloc calls should be changed to be 4071 * NOWAIT mallocs. 4072 * 4073 * Any or all of the four parameters may be set when this function is 4074 * called. It should handle setting more than one parameter at once. 4075 */ 4076 static int 4077 sasetparams(struct cam_periph *periph, sa_params params_to_set, 4078 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4079 u_int32_t sense_flags) 4080 { 4081 struct sa_softc *softc; 4082 u_int32_t current_blocksize; 4083 u_int32_t current_calg; 4084 u_int8_t current_density; 4085 u_int8_t current_speed; 4086 int comp_enabled, comp_supported; 4087 void *mode_buffer; 4088 int mode_buffer_len; 4089 struct scsi_mode_header_6 *mode_hdr; 4090 struct scsi_mode_blk_desc *mode_blk; 4091 sa_comp_t *ccomp, *cpage; 4092 int buff_mode; 4093 union ccb *ccb = NULL; 4094 int error; 4095 4096 softc = (struct sa_softc *)periph->softc; 4097 4098 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4099 if (ccomp == NULL) 4100 return (ENOMEM); 4101 4102 /* 4103 * Since it doesn't make sense to set the number of blocks, or 4104 * write protection, we won't try to get the current value. We 4105 * always want to get the blocksize, so we can set it back to the 4106 * proper value. 4107 */ 4108 error = sagetparams(periph, 4109 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4110 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4111 ¤t_speed, &comp_supported, &comp_enabled, 4112 ¤t_calg, ccomp, NULL, 0, 0); 4113 4114 if (error != 0) { 4115 free(ccomp, M_SCSISA); 4116 return (error); 4117 } 4118 4119 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4120 if (params_to_set & SA_PARAM_COMPRESSION) 4121 mode_buffer_len += sizeof (sa_comp_t); 4122 4123 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4124 if (mode_buffer == NULL) { 4125 free(ccomp, M_SCSISA); 4126 return (ENOMEM); 4127 } 4128 4129 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4130 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4131 4132 ccb = cam_periph_getccb(periph, 1); 4133 4134 retry: 4135 4136 if (params_to_set & SA_PARAM_COMPRESSION) { 4137 if (mode_blk) { 4138 cpage = (sa_comp_t *)&mode_blk[1]; 4139 } else { 4140 cpage = (sa_comp_t *)&mode_hdr[1]; 4141 } 4142 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4143 cpage->hdr.pagecode &= ~0x80; 4144 } else 4145 cpage = NULL; 4146 4147 /* 4148 * If the caller wants us to set the blocksize, use the one they 4149 * pass in. Otherwise, use the blocksize we got back from the 4150 * mode select above. 4151 */ 4152 if (mode_blk) { 4153 if (params_to_set & SA_PARAM_BLOCKSIZE) 4154 scsi_ulto3b(blocksize, mode_blk->blklen); 4155 else 4156 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4157 4158 /* 4159 * Set density if requested, else preserve old density. 4160 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4161 * devices, else density we've latched up in our softc. 4162 */ 4163 if (params_to_set & SA_PARAM_DENSITY) { 4164 mode_blk->density = density; 4165 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4166 mode_blk->density = SCSI_SAME_DENSITY; 4167 } else { 4168 mode_blk->density = softc->media_density; 4169 } 4170 } 4171 4172 /* 4173 * For mode selects, these two fields must be zero. 4174 */ 4175 mode_hdr->data_length = 0; 4176 mode_hdr->medium_type = 0; 4177 4178 /* set the speed to the current value */ 4179 mode_hdr->dev_spec = current_speed; 4180 4181 /* if set, set single-initiator buffering mode */ 4182 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4183 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4184 } 4185 4186 if (mode_blk) 4187 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4188 else 4189 mode_hdr->blk_desc_len = 0; 4190 4191 /* 4192 * First, if the user wants us to set the compression algorithm or 4193 * just turn compression on, check to make sure that this drive 4194 * supports compression. 4195 */ 4196 if (params_to_set & SA_PARAM_COMPRESSION) { 4197 /* 4198 * If the compression algorithm is 0, disable compression. 4199 * If the compression algorithm is non-zero, enable 4200 * compression and set the compression type to the 4201 * specified compression algorithm, unless the algorithm is 4202 * MT_COMP_ENABLE. In that case, we look at the 4203 * compression algorithm that is currently set and if it is 4204 * non-zero, we leave it as-is. If it is zero, and we have 4205 * saved a compression algorithm from a time when 4206 * compression was enabled before, set the compression to 4207 * the saved value. 4208 */ 4209 switch (ccomp->hdr.pagecode & ~0x80) { 4210 case SA_DEVICE_CONFIGURATION_PAGE: 4211 { 4212 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4213 if (calg == 0) { 4214 dcp->sel_comp_alg = SA_COMP_NONE; 4215 break; 4216 } 4217 if (calg != MT_COMP_ENABLE) { 4218 dcp->sel_comp_alg = calg; 4219 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4220 softc->saved_comp_algorithm != 0) { 4221 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4222 } 4223 break; 4224 } 4225 case SA_DATA_COMPRESSION_PAGE: 4226 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4227 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4228 if (calg == 0) { 4229 /* 4230 * Disable compression, but leave the 4231 * decompression and the capability bit 4232 * alone. 4233 */ 4234 dcp->dce_and_dcc = SA_DCP_DCC; 4235 dcp->dde_and_red |= SA_DCP_DDE; 4236 break; 4237 } 4238 /* enable compression && decompression */ 4239 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4240 dcp->dde_and_red |= SA_DCP_DDE; 4241 /* 4242 * If there, use compression algorithm from caller. 4243 * Otherwise, if there's a saved compression algorithm 4244 * and there is no current algorithm, use the saved 4245 * algorithm. Else parrot back what we got and hope 4246 * for the best. 4247 */ 4248 if (calg != MT_COMP_ENABLE) { 4249 scsi_ulto4b(calg, dcp->comp_algorithm); 4250 scsi_ulto4b(calg, dcp->decomp_algorithm); 4251 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4252 softc->saved_comp_algorithm != 0) { 4253 scsi_ulto4b(softc->saved_comp_algorithm, 4254 dcp->comp_algorithm); 4255 scsi_ulto4b(softc->saved_comp_algorithm, 4256 dcp->decomp_algorithm); 4257 } 4258 break; 4259 } 4260 /* 4261 * Compression does not appear to be supported- 4262 * at least via the DATA COMPRESSION page. It 4263 * would be too much to ask us to believe that 4264 * the page itself is supported, but incorrectly 4265 * reports an ability to manipulate data compression, 4266 * so we'll assume that this device doesn't support 4267 * compression. We can just fall through for that. 4268 */ 4269 /* FALLTHROUGH */ 4270 default: 4271 /* 4272 * The drive doesn't seem to support compression, 4273 * so turn off the set compression bit. 4274 */ 4275 params_to_set &= ~SA_PARAM_COMPRESSION; 4276 xpt_print(periph->path, 4277 "device does not seem to support compression\n"); 4278 4279 /* 4280 * If that was the only thing the user wanted us to set, 4281 * clean up allocated resources and return with 4282 * 'operation not supported'. 4283 */ 4284 if (params_to_set == SA_PARAM_NONE) { 4285 free(mode_buffer, M_SCSISA); 4286 xpt_release_ccb(ccb); 4287 return (ENODEV); 4288 } 4289 4290 /* 4291 * That wasn't the only thing the user wanted us to set. 4292 * So, decrease the stated mode buffer length by the 4293 * size of the compression mode page. 4294 */ 4295 mode_buffer_len -= sizeof(sa_comp_t); 4296 } 4297 } 4298 4299 /* It is safe to retry this operation */ 4300 scsi_mode_select(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 4301 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4302 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4303 4304 error = cam_periph_runccb(ccb, saerror, 0, 4305 sense_flags, softc->device_stats); 4306 4307 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4308 int idx; 4309 char *xyz = mode_buffer; 4310 xpt_print_path(periph->path); 4311 printf("Err%d, Mode Select Data=", error); 4312 for (idx = 0; idx < mode_buffer_len; idx++) 4313 printf(" 0x%02x", xyz[idx] & 0xff); 4314 printf("\n"); 4315 } 4316 4317 if (error) { 4318 /* 4319 * If we can, try without setting density/blocksize. 4320 */ 4321 if (mode_blk) { 4322 if ((params_to_set & 4323 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4324 mode_blk = NULL; 4325 goto retry; 4326 } 4327 } else { 4328 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4329 cpage = (sa_comp_t *)&mode_blk[1]; 4330 } 4331 4332 /* 4333 * If we were setting the blocksize, and that failed, we 4334 * want to set it to its original value. If we weren't 4335 * setting the blocksize, we don't want to change it. 4336 */ 4337 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4338 4339 /* 4340 * Set density if requested, else preserve old density. 4341 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4342 * devices, else density we've latched up in our softc. 4343 */ 4344 if (params_to_set & SA_PARAM_DENSITY) { 4345 mode_blk->density = current_density; 4346 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4347 mode_blk->density = SCSI_SAME_DENSITY; 4348 } else { 4349 mode_blk->density = softc->media_density; 4350 } 4351 4352 if (params_to_set & SA_PARAM_COMPRESSION) 4353 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4354 4355 /* 4356 * The retry count is the only CCB field that might have been 4357 * changed that we care about, so reset it back to 1. 4358 */ 4359 ccb->ccb_h.retry_count = 1; 4360 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4361 softc->device_stats); 4362 } 4363 4364 xpt_release_ccb(ccb); 4365 4366 if (ccomp != NULL) 4367 free(ccomp, M_SCSISA); 4368 4369 if (params_to_set & SA_PARAM_COMPRESSION) { 4370 if (error) { 4371 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4372 /* 4373 * Even if we get an error setting compression, 4374 * do not say that we don't support it. We could 4375 * have been wrong, or it may be media specific. 4376 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4377 */ 4378 softc->saved_comp_algorithm = softc->comp_algorithm; 4379 softc->comp_algorithm = 0; 4380 } else { 4381 softc->flags |= SA_FLAG_COMP_ENABLED; 4382 softc->comp_algorithm = calg; 4383 } 4384 } 4385 4386 free(mode_buffer, M_SCSISA); 4387 return (error); 4388 } 4389 4390 static int 4391 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4392 struct mtextget *g) 4393 { 4394 int indent, error; 4395 char tmpstr[80]; 4396 struct sa_softc *softc; 4397 int tmpint; 4398 uint32_t maxio_tmp; 4399 struct ccb_getdev cgd; 4400 4401 softc = (struct sa_softc *)periph->softc; 4402 4403 error = 0; 4404 4405 error = sagetparams_common(dev, periph); 4406 if (error) 4407 goto extget_bailout; 4408 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4409 sagetpos(periph); 4410 4411 indent = 0; 4412 SASBADDNODE(sb, indent, mtextget); 4413 /* 4414 * Basic CAM peripheral information. 4415 */ 4416 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4417 strlen(periph->periph_name) + 1); 4418 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4419 memset(&cgd, 0, sizeof(cgd)); 4420 xpt_setup_ccb(&cgd.ccb_h, 4421 periph->path, 4422 CAM_PRIORITY_NORMAL); 4423 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4424 xpt_action((union ccb *)&cgd); 4425 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4426 g->status = MT_EXT_GET_ERROR; 4427 snprintf(g->error_str, sizeof(g->error_str), 4428 "Error %#x returned for XPT_GDEV_TYPE CCB", 4429 cgd.ccb_h.status); 4430 goto extget_bailout; 4431 } 4432 4433 cam_strvis(tmpstr, cgd.inq_data.vendor, 4434 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4435 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4436 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4437 4438 cam_strvis(tmpstr, cgd.inq_data.product, 4439 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4440 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4441 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4442 4443 cam_strvis(tmpstr, cgd.inq_data.revision, 4444 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4445 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4446 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4447 4448 if (cgd.serial_num_len > 0) { 4449 char *tmpstr2; 4450 size_t ts2_len; 4451 int ts2_malloc; 4452 4453 ts2_len = 0; 4454 4455 if (cgd.serial_num_len > sizeof(tmpstr)) { 4456 ts2_len = cgd.serial_num_len + 1; 4457 ts2_malloc = 1; 4458 tmpstr2 = malloc(ts2_len, M_SCSISA, M_NOWAIT | M_ZERO); 4459 /* 4460 * The 80 characters allocated on the stack above 4461 * will handle the vast majority of serial numbers. 4462 * If we run into one that is larger than that, and 4463 * we can't malloc the length without blocking, 4464 * bail out with an out of memory error. 4465 */ 4466 if (tmpstr2 == NULL) { 4467 error = ENOMEM; 4468 goto extget_bailout; 4469 } 4470 } else { 4471 ts2_len = sizeof(tmpstr); 4472 ts2_malloc = 0; 4473 tmpstr2 = tmpstr; 4474 } 4475 4476 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4477 ts2_len); 4478 4479 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4480 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4481 if (ts2_malloc != 0) 4482 free(tmpstr2, M_SCSISA); 4483 } else { 4484 /* 4485 * We return a serial_num element in any case, but it will 4486 * be empty if the device has no serial number. 4487 */ 4488 tmpstr[0] = '\0'; 4489 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4490 (ssize_t)0, "Serial Number"); 4491 } 4492 4493 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4494 "Maximum I/O size allowed by driver and controller"); 4495 4496 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4497 "Maximum I/O size reported by controller"); 4498 4499 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4500 "Maximum block size supported by tape drive and media"); 4501 4502 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4503 "Minimum block size supported by tape drive and media"); 4504 4505 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4506 "Block granularity supported by tape drive and media"); 4507 4508 maxio_tmp = min(softc->max_blk, softc->maxio); 4509 4510 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4511 "Maximum possible I/O size"); 4512 4513 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4514 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4515 4516 /* 4517 * XXX KDM include SIM, bus, target, LUN? 4518 */ 4519 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4520 tmpint = 0; 4521 else 4522 tmpint = 1; 4523 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4524 "Set to 1 if compression is supported, 0 if not"); 4525 if (softc->flags & SA_FLAG_COMP_ENABLED) 4526 tmpint = 1; 4527 else 4528 tmpint = 0; 4529 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4530 "Set to 1 if compression is enabled, 0 if not"); 4531 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4532 compression_algorithm, "Numeric compression algorithm"); 4533 4534 safillprot(softc, &indent, sb); 4535 4536 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4537 media_blocksize, "Block size reported by drive or set by user"); 4538 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4539 calculated_fileno, "Calculated file number, -1 if unknown"); 4540 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4541 calculated_rel_blkno, "Calculated block number relative to file, " 4542 "set to -1 if unknown"); 4543 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4544 reported_fileno, "File number reported by drive, -1 if unknown"); 4545 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4546 reported_blkno, "Block number relative to BOP/BOT reported by " 4547 "drive, -1 if unknown"); 4548 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4549 partition, "Current partition number, 0 is the default"); 4550 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4551 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4552 "not, -1 if unknown"); 4553 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4554 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4555 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4556 "Set to 1 if drive is past programmable early warning, 0 if not, " 4557 "-1 if unknown"); 4558 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4559 residual, "Residual for the last I/O"); 4560 /* 4561 * XXX KDM should we send a string with the current driver 4562 * status already decoded instead of a numeric value? 4563 */ 4564 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4565 "Current state of the driver"); 4566 4567 safilldensitysb(softc, &indent, sb); 4568 4569 SASBENDNODE(sb, indent, mtextget); 4570 4571 extget_bailout: 4572 4573 return (error); 4574 } 4575 4576 static int 4577 saparamget(struct sa_softc *softc, struct sbuf *sb) 4578 { 4579 int indent; 4580 4581 indent = 0; 4582 SASBADDNODE(sb, indent, mtparamget); 4583 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4584 "Suppress an error on underlength variable reads"); 4585 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4586 "Return an error to warn that end of tape is approaching"); 4587 safillprot(softc, &indent, sb); 4588 SASBENDNODE(sb, indent, mtparamget); 4589 4590 return (0); 4591 } 4592 4593 static void 4594 saprevent(struct cam_periph *periph, int action) 4595 { 4596 struct sa_softc *softc; 4597 union ccb *ccb; 4598 int error, sf; 4599 4600 softc = (struct sa_softc *)periph->softc; 4601 4602 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4603 return; 4604 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4605 return; 4606 4607 /* 4608 * We can be quiet about illegal requests. 4609 */ 4610 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4611 sf = 0; 4612 } else 4613 sf = SF_QUIET_IR; 4614 4615 ccb = cam_periph_getccb(periph, 1); 4616 4617 /* It is safe to retry this operation */ 4618 scsi_prevent(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, action, 4619 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4620 4621 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4622 if (error == 0) { 4623 if (action == PR_ALLOW) 4624 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4625 else 4626 softc->flags |= SA_FLAG_TAPE_LOCKED; 4627 } 4628 4629 xpt_release_ccb(ccb); 4630 } 4631 4632 static int 4633 sarewind(struct cam_periph *periph) 4634 { 4635 union ccb *ccb; 4636 struct sa_softc *softc; 4637 int error; 4638 4639 softc = (struct sa_softc *)periph->softc; 4640 4641 ccb = cam_periph_getccb(periph, 1); 4642 4643 /* It is safe to retry this operation */ 4644 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 4645 SSD_FULL_SIZE, REWIND_TIMEOUT); 4646 4647 softc->dsreg = MTIO_DSREG_REW; 4648 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4649 softc->dsreg = MTIO_DSREG_REST; 4650 4651 xpt_release_ccb(ccb); 4652 if (error == 0) { 4653 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4654 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4655 } else { 4656 softc->fileno = softc->blkno = (daddr_t) -1; 4657 softc->partition = (daddr_t) -1; 4658 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4659 } 4660 return (error); 4661 } 4662 4663 static int 4664 saspace(struct cam_periph *periph, int count, scsi_space_code code) 4665 { 4666 union ccb *ccb; 4667 struct sa_softc *softc; 4668 int error; 4669 4670 softc = (struct sa_softc *)periph->softc; 4671 4672 ccb = cam_periph_getccb(periph, 1); 4673 4674 /* This cannot be retried */ 4675 4676 scsi_space(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, code, count, 4677 SSD_FULL_SIZE, SPACE_TIMEOUT); 4678 4679 /* 4680 * Clear residual because we will be using it. 4681 */ 4682 softc->last_ctl_resid = 0; 4683 4684 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4685 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4686 softc->dsreg = MTIO_DSREG_REST; 4687 4688 xpt_release_ccb(ccb); 4689 4690 /* 4691 * If a spacing operation has failed, we need to invalidate 4692 * this mount. 4693 * 4694 * If the spacing operation was setmarks or to end of recorded data, 4695 * we no longer know our relative position. 4696 * 4697 * If the spacing operations was spacing files in reverse, we 4698 * take account of the residual, but still check against less 4699 * than zero- if we've gone negative, we must have hit BOT. 4700 * 4701 * If the spacing operations was spacing records in reverse and 4702 * we have a residual, we've either hit BOT or hit a filemark. 4703 * In the former case, we know our new record number (0). In 4704 * the latter case, we have absolutely no idea what the real 4705 * record number is- we've stopped between the end of the last 4706 * record in the previous file and the filemark that stopped 4707 * our spacing backwards. 4708 */ 4709 if (error) { 4710 softc->fileno = softc->blkno = (daddr_t) -1; 4711 softc->rep_blkno = softc->partition = (daddr_t) -1; 4712 softc->rep_fileno = (daddr_t) -1; 4713 } else if (code == SS_SETMARKS || code == SS_EOD) { 4714 softc->fileno = softc->blkno = (daddr_t) -1; 4715 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4716 softc->fileno += (count - softc->last_ctl_resid); 4717 if (softc->fileno < 0) /* we must of hit BOT */ 4718 softc->fileno = 0; 4719 softc->blkno = 0; 4720 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4721 softc->blkno += (count - softc->last_ctl_resid); 4722 if (count < 0) { 4723 if (softc->last_ctl_resid || softc->blkno < 0) { 4724 if (softc->fileno == 0) { 4725 softc->blkno = 0; 4726 } else { 4727 softc->blkno = (daddr_t) -1; 4728 } 4729 } 4730 } 4731 } 4732 if (error == 0) 4733 sagetpos(periph); 4734 4735 return (error); 4736 } 4737 4738 static int 4739 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4740 { 4741 union ccb *ccb; 4742 struct sa_softc *softc; 4743 int error, nwm = 0; 4744 4745 softc = (struct sa_softc *)periph->softc; 4746 if (softc->open_rdonly) 4747 return (EBADF); 4748 4749 ccb = cam_periph_getccb(periph, 1); 4750 /* 4751 * Clear residual because we will be using it. 4752 */ 4753 softc->last_ctl_resid = 0; 4754 4755 softc->dsreg = MTIO_DSREG_FMK; 4756 /* this *must* not be retried */ 4757 scsi_write_filemarks(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, 4758 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4759 softc->dsreg = MTIO_DSREG_REST; 4760 4761 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4762 4763 if (error == 0 && nmarks) { 4764 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4765 nwm = nmarks - softc->last_ctl_resid; 4766 softc->filemarks += nwm; 4767 } 4768 4769 xpt_release_ccb(ccb); 4770 4771 /* 4772 * Update relative positions (if we're doing that). 4773 */ 4774 if (error) { 4775 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4776 } else if (softc->fileno != (daddr_t) -1) { 4777 softc->fileno += nwm; 4778 softc->blkno = 0; 4779 } 4780 4781 /* 4782 * Ask the tape drive for position information. 4783 */ 4784 sagetpos(periph); 4785 4786 /* 4787 * If we got valid position information, since we just wrote a file 4788 * mark, we know we're at the file mark and block 0 after that 4789 * filemark. 4790 */ 4791 if (softc->rep_fileno != (daddr_t) -1) { 4792 softc->fileno = softc->rep_fileno; 4793 softc->blkno = 0; 4794 } 4795 4796 return (error); 4797 } 4798 4799 static int 4800 sagetpos(struct cam_periph *periph) 4801 { 4802 union ccb *ccb; 4803 struct scsi_tape_position_long_data long_pos; 4804 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4805 int error; 4806 4807 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4808 softc->rep_fileno = (daddr_t) -1; 4809 softc->rep_blkno = (daddr_t) -1; 4810 softc->bop = softc->eop = softc->bpew = -1; 4811 return (EOPNOTSUPP); 4812 } 4813 4814 bzero(&long_pos, sizeof(long_pos)); 4815 4816 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4817 scsi_read_position_10(&ccb->csio, 4818 /*retries*/ 1, 4819 /*cbfcnp*/ NULL, 4820 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4821 /*service_action*/ SA_RPOS_LONG_FORM, 4822 /*data_ptr*/ (uint8_t *)&long_pos, 4823 /*length*/ sizeof(long_pos), 4824 /*sense_len*/ SSD_FULL_SIZE, 4825 /*timeout*/ SCSIOP_TIMEOUT); 4826 4827 softc->dsreg = MTIO_DSREG_RBSY; 4828 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4829 softc->device_stats); 4830 softc->dsreg = MTIO_DSREG_REST; 4831 4832 if (error == 0) { 4833 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4834 /* 4835 * If the drive doesn't know what file mark it is 4836 * on, our calculated filemark isn't going to be 4837 * accurate either. 4838 */ 4839 softc->fileno = (daddr_t) -1; 4840 softc->rep_fileno = (daddr_t) -1; 4841 } else { 4842 softc->fileno = softc->rep_fileno = 4843 scsi_8btou64(long_pos.logical_file_num); 4844 } 4845 4846 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4847 softc->partition = (daddr_t) -1; 4848 softc->rep_blkno = (daddr_t) -1; 4849 /* 4850 * If the tape drive doesn't know its block 4851 * position, we can't claim to know it either. 4852 */ 4853 softc->blkno = (daddr_t) -1; 4854 } else { 4855 softc->partition = scsi_4btoul(long_pos.partition); 4856 softc->rep_blkno = 4857 scsi_8btou64(long_pos.logical_object_num); 4858 } 4859 if (long_pos.flags & SA_RPOS_LONG_BOP) 4860 softc->bop = 1; 4861 else 4862 softc->bop = 0; 4863 4864 if (long_pos.flags & SA_RPOS_LONG_EOP) 4865 softc->eop = 1; 4866 else 4867 softc->eop = 0; 4868 4869 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 4870 || (softc->set_pews_status != 0)) { 4871 softc->bpew = 1; 4872 if (softc->set_pews_status > 0) 4873 softc->set_pews_status--; 4874 } else 4875 softc->bpew = 0; 4876 } else if (error == EINVAL) { 4877 /* 4878 * If this drive returned an invalid-request type error, 4879 * then it likely doesn't support the long form report. 4880 */ 4881 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4882 } 4883 4884 if (error != 0) { 4885 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4886 softc->partition = (daddr_t) -1; 4887 softc->bop = softc->eop = softc->bpew = -1; 4888 } 4889 4890 xpt_release_ccb(ccb); 4891 4892 return (error); 4893 } 4894 4895 static int 4896 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4897 { 4898 struct scsi_tape_position_data loc; 4899 union ccb *ccb; 4900 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4901 int error; 4902 4903 /* 4904 * We try and flush any buffered writes here if we were writing 4905 * and we're trying to get hardware block position. It eats 4906 * up performance substantially, but I'm wary of drive firmware. 4907 * 4908 * I think that *logical* block position is probably okay- 4909 * but hardware block position might have to wait for data 4910 * to hit media to be valid. Caveat Emptor. 4911 */ 4912 4913 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4914 error = sawritefilemarks(periph, 0, 0, 0); 4915 if (error && error != EACCES) 4916 return (error); 4917 } 4918 4919 ccb = cam_periph_getccb(periph, 1); 4920 scsi_read_position(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 4921 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4922 softc->dsreg = MTIO_DSREG_RBSY; 4923 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4924 softc->dsreg = MTIO_DSREG_REST; 4925 4926 if (error == 0) { 4927 if (loc.flags & SA_RPOS_UNCERTAIN) { 4928 error = EINVAL; /* nothing is certain */ 4929 } else { 4930 *blkptr = scsi_4btoul(loc.firstblk); 4931 } 4932 } 4933 4934 xpt_release_ccb(ccb); 4935 return (error); 4936 } 4937 4938 static int 4939 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4940 { 4941 union ccb *ccb; 4942 struct sa_softc *softc; 4943 int locate16; 4944 int immed, cp; 4945 int error; 4946 4947 /* 4948 * We used to try and flush any buffered writes here. 4949 * Now we push this onto user applications to either 4950 * flush the pending writes themselves (via a zero count 4951 * WRITE FILEMARKS command) or they can trust their tape 4952 * drive to do this correctly for them. 4953 */ 4954 4955 softc = (struct sa_softc *)periph->softc; 4956 ccb = cam_periph_getccb(periph, 1); 4957 4958 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4959 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4960 4961 /* 4962 * Determine whether we have to use LOCATE or LOCATE16. The hard 4963 * bit is only possible with LOCATE, but the new ioctls do not 4964 * allow setting that bit. So we can't get into the situation of 4965 * having the hard bit set with a block address that is larger than 4966 * 32-bits. 4967 */ 4968 if (hard != 0) 4969 locate16 = 0; 4970 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4971 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4972 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4973 locate16 = 1; 4974 else 4975 locate16 = 0; 4976 4977 if (locate16 != 0) { 4978 scsi_locate_16(&ccb->csio, 4979 /*retries*/ 1, 4980 /*cbfcnp*/ NULL, 4981 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4982 /*immed*/ immed, 4983 /*cp*/ cp, 4984 /*dest_type*/ locate_info->dest_type, 4985 /*bam*/ locate_info->block_address_mode, 4986 /*partition*/ locate_info->partition, 4987 /*logical_id*/ locate_info->logical_id, 4988 /*sense_len*/ SSD_FULL_SIZE, 4989 /*timeout*/ SPACE_TIMEOUT); 4990 } else { 4991 scsi_locate_10(&ccb->csio, 4992 /*retries*/ 1, 4993 /*cbfcnp*/ NULL, 4994 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4995 /*immed*/ immed, 4996 /*cp*/ cp, 4997 /*hard*/ hard, 4998 /*partition*/ locate_info->partition, 4999 /*block_address*/ locate_info->logical_id, 5000 /*sense_len*/ SSD_FULL_SIZE, 5001 /*timeout*/ SPACE_TIMEOUT); 5002 } 5003 5004 softc->dsreg = MTIO_DSREG_POS; 5005 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5006 softc->dsreg = MTIO_DSREG_REST; 5007 xpt_release_ccb(ccb); 5008 5009 /* 5010 * We assume the calculated file and block numbers are unknown 5011 * unless we have enough information to populate them. 5012 */ 5013 softc->fileno = softc->blkno = (daddr_t) -1; 5014 5015 /* 5016 * If the user requested changing the partition and the request 5017 * succeeded, note the partition. 5018 */ 5019 if ((error == 0) 5020 && (cp != 0)) 5021 softc->partition = locate_info->partition; 5022 else 5023 softc->partition = (daddr_t) -1; 5024 5025 if (error == 0) { 5026 switch (locate_info->dest_type) { 5027 case MT_LOCATE_DEST_FILE: 5028 /* 5029 * This is the only case where we can reliably 5030 * calculate the file and block numbers. 5031 */ 5032 softc->fileno = locate_info->logical_id; 5033 softc->blkno = 0; 5034 break; 5035 case MT_LOCATE_DEST_OBJECT: 5036 case MT_LOCATE_DEST_SET: 5037 case MT_LOCATE_DEST_EOD: 5038 default: 5039 break; 5040 } 5041 } 5042 5043 /* 5044 * Ask the drive for current position information. 5045 */ 5046 sagetpos(periph); 5047 5048 return (error); 5049 } 5050 5051 static int 5052 saretension(struct cam_periph *periph) 5053 { 5054 union ccb *ccb; 5055 struct sa_softc *softc; 5056 int error; 5057 5058 softc = (struct sa_softc *)periph->softc; 5059 5060 ccb = cam_periph_getccb(periph, 1); 5061 5062 /* It is safe to retry this operation */ 5063 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5064 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5065 5066 softc->dsreg = MTIO_DSREG_TEN; 5067 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5068 softc->dsreg = MTIO_DSREG_REST; 5069 5070 xpt_release_ccb(ccb); 5071 if (error == 0) { 5072 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5073 sagetpos(periph); 5074 } else 5075 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5076 return (error); 5077 } 5078 5079 static int 5080 sareservereleaseunit(struct cam_periph *periph, int reserve) 5081 { 5082 union ccb *ccb; 5083 struct sa_softc *softc; 5084 int error; 5085 5086 softc = (struct sa_softc *)periph->softc; 5087 ccb = cam_periph_getccb(periph, 1); 5088 5089 /* It is safe to retry this operation */ 5090 scsi_reserve_release_unit(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 5091 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5092 softc->dsreg = MTIO_DSREG_RBSY; 5093 error = cam_periph_runccb(ccb, saerror, 0, 5094 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5095 softc->dsreg = MTIO_DSREG_REST; 5096 xpt_release_ccb(ccb); 5097 5098 /* 5099 * If the error was Illegal Request, then the device doesn't support 5100 * RESERVE/RELEASE. This is not an error. 5101 */ 5102 if (error == EINVAL) { 5103 error = 0; 5104 } 5105 5106 return (error); 5107 } 5108 5109 static int 5110 saloadunload(struct cam_periph *periph, int load) 5111 { 5112 union ccb *ccb; 5113 struct sa_softc *softc; 5114 int error; 5115 5116 softc = (struct sa_softc *)periph->softc; 5117 5118 ccb = cam_periph_getccb(periph, 1); 5119 5120 /* It is safe to retry this operation */ 5121 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5122 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5123 5124 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5125 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5126 softc->dsreg = MTIO_DSREG_REST; 5127 xpt_release_ccb(ccb); 5128 5129 if (error || load == 0) { 5130 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5131 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5132 } else if (error == 0) { 5133 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5134 sagetpos(periph); 5135 } 5136 return (error); 5137 } 5138 5139 static int 5140 saerase(struct cam_periph *periph, int longerase) 5141 { 5142 5143 union ccb *ccb; 5144 struct sa_softc *softc; 5145 int error; 5146 5147 softc = (struct sa_softc *)periph->softc; 5148 if (softc->open_rdonly) 5149 return (EBADF); 5150 5151 ccb = cam_periph_getccb(periph, 1); 5152 5153 scsi_erase(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5154 SSD_FULL_SIZE, ERASE_TIMEOUT); 5155 5156 softc->dsreg = MTIO_DSREG_ZER; 5157 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5158 softc->dsreg = MTIO_DSREG_REST; 5159 5160 xpt_release_ccb(ccb); 5161 return (error); 5162 } 5163 5164 /* 5165 * Fill an sbuf with density data in XML format. This particular macro 5166 * works for multi-byte integer fields. 5167 * 5168 * Note that 1 byte fields aren't supported here. The reason is that the 5169 * compiler does not evaluate the sizeof(), and assumes that any of the 5170 * sizes are possible for a given field. So passing in a multi-byte 5171 * field will result in a warning that the assignment makes an integer 5172 * from a pointer without a cast, if there is an assignment in the 1 byte 5173 * case. 5174 */ 5175 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5176 len_to_go, cur_offset, desc){ \ 5177 size_t cur_field_len; \ 5178 \ 5179 cur_field_len = sizeof(dens_data->field); \ 5180 if (desc_remain < cur_field_len) { \ 5181 len_to_go -= desc_remain; \ 5182 cur_offset += desc_remain; \ 5183 continue; \ 5184 } \ 5185 len_to_go -= cur_field_len; \ 5186 cur_offset += cur_field_len; \ 5187 desc_remain -= cur_field_len; \ 5188 \ 5189 switch (sizeof(dens_data->field)) { \ 5190 case 1: \ 5191 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5192 "field width for SAFILLDENSFIELD")); \ 5193 break; \ 5194 case 2: \ 5195 SASBADDUINTDESC(sb, indent, \ 5196 scsi_2btoul(dens_data->field), %u, field, desc); \ 5197 break; \ 5198 case 3: \ 5199 SASBADDUINTDESC(sb, indent, \ 5200 scsi_3btoul(dens_data->field), %u, field, desc); \ 5201 break; \ 5202 case 4: \ 5203 SASBADDUINTDESC(sb, indent, \ 5204 scsi_4btoul(dens_data->field), %u, field, desc); \ 5205 break; \ 5206 case 8: \ 5207 SASBADDUINTDESC(sb, indent, \ 5208 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5209 field, desc); \ 5210 break; \ 5211 default: \ 5212 break; \ 5213 } \ 5214 }; 5215 /* 5216 * Fill an sbuf with density data in XML format. This particular macro 5217 * works for strings. 5218 */ 5219 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5220 len_to_go, cur_offset, desc){ \ 5221 size_t cur_field_len; \ 5222 char tmpstr[32]; \ 5223 \ 5224 cur_field_len = sizeof(dens_data->field); \ 5225 if (desc_remain < cur_field_len) { \ 5226 len_to_go -= desc_remain; \ 5227 cur_offset += desc_remain; \ 5228 continue; \ 5229 } \ 5230 len_to_go -= cur_field_len; \ 5231 cur_offset += cur_field_len; \ 5232 desc_remain -= cur_field_len; \ 5233 \ 5234 cam_strvis(tmpstr, dens_data->field, \ 5235 sizeof(dens_data->field), sizeof(tmpstr)); \ 5236 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5237 strlen(tmpstr) + 1, desc); \ 5238 }; 5239 5240 /* 5241 * Fill an sbuf with density data descriptors. 5242 */ 5243 static void 5244 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5245 int is_density) 5246 { 5247 struct scsi_density_hdr *hdr; 5248 uint32_t hdr_len; 5249 int len_to_go, cur_offset; 5250 int length_offset; 5251 int num_reports, need_close; 5252 5253 /* 5254 * We need at least the header length. Note that this isn't an 5255 * error, not all tape drives will have every data type. 5256 */ 5257 if (buf_len < sizeof(*hdr)) 5258 goto bailout; 5259 5260 hdr = (struct scsi_density_hdr *)buf; 5261 hdr_len = scsi_2btoul(hdr->length); 5262 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5263 if (is_density) { 5264 length_offset = __offsetof(struct scsi_density_data, 5265 bits_per_mm); 5266 } else { 5267 length_offset = __offsetof(struct scsi_medium_type_data, 5268 num_density_codes); 5269 } 5270 cur_offset = sizeof(*hdr); 5271 5272 num_reports = 0; 5273 need_close = 0; 5274 5275 while (len_to_go > length_offset) { 5276 struct scsi_density_data *dens_data; 5277 struct scsi_medium_type_data *type_data; 5278 int desc_remain; 5279 size_t cur_field_len; 5280 5281 dens_data = NULL; 5282 type_data = NULL; 5283 5284 if (is_density) { 5285 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5286 if (dens_data->byte2 & SDD_DLV) 5287 desc_remain = scsi_2btoul(dens_data->length); 5288 else 5289 desc_remain = SDD_DEFAULT_LENGTH - 5290 length_offset; 5291 } else { 5292 type_data = (struct scsi_medium_type_data *) 5293 &buf[cur_offset]; 5294 desc_remain = scsi_2btoul(type_data->length); 5295 } 5296 5297 len_to_go -= length_offset; 5298 desc_remain = min(desc_remain, len_to_go); 5299 cur_offset += length_offset; 5300 5301 if (need_close != 0) { 5302 SASBENDNODE(sb, *indent, density_entry); 5303 } 5304 5305 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5306 num_reports++; 5307 need_close = 1; 5308 5309 if (is_density) { 5310 SASBADDUINTDESC(sb, *indent, 5311 dens_data->primary_density_code, %u, 5312 primary_density_code, "Primary Density Code"); 5313 SASBADDUINTDESC(sb, *indent, 5314 dens_data->secondary_density_code, %u, 5315 secondary_density_code, "Secondary Density Code"); 5316 SASBADDUINTDESC(sb, *indent, 5317 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5318 "Density Flags"); 5319 5320 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5321 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5322 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5323 desc_remain, len_to_go, cur_offset, "Media width"); 5324 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5325 desc_remain, len_to_go, cur_offset, 5326 "Number of Tracks"); 5327 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5328 desc_remain, len_to_go, cur_offset, "Capacity"); 5329 5330 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5331 desc_remain, len_to_go, cur_offset, 5332 "Assigning Organization"); 5333 5334 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5335 desc_remain, len_to_go, cur_offset, "Density Name"); 5336 5337 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5338 desc_remain, len_to_go, cur_offset, "Description"); 5339 } else { 5340 int i; 5341 5342 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5343 %u, medium_type, "Medium Type"); 5344 5345 cur_field_len = 5346 __offsetof(struct scsi_medium_type_data, 5347 media_width) - 5348 __offsetof(struct scsi_medium_type_data, 5349 num_density_codes); 5350 5351 if (desc_remain < cur_field_len) { 5352 len_to_go -= desc_remain; 5353 cur_offset += desc_remain; 5354 continue; 5355 } 5356 len_to_go -= cur_field_len; 5357 cur_offset += cur_field_len; 5358 desc_remain -= cur_field_len; 5359 5360 SASBADDINTDESC(sb, *indent, 5361 type_data->num_density_codes, %d, 5362 num_density_codes, "Number of Density Codes"); 5363 SASBADDNODE(sb, *indent, density_code_list); 5364 for (i = 0; i < type_data->num_density_codes; 5365 i++) { 5366 SASBADDUINTDESC(sb, *indent, 5367 type_data->primary_density_codes[i], %u, 5368 density_code, "Density Code"); 5369 } 5370 SASBENDNODE(sb, *indent, density_code_list); 5371 5372 SAFILLDENSSB(type_data, sb, *indent, media_width, 5373 desc_remain, len_to_go, cur_offset, 5374 "Media width"); 5375 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5376 desc_remain, len_to_go, cur_offset, 5377 "Medium length"); 5378 5379 /* 5380 * Account for the two reserved bytes. 5381 */ 5382 cur_field_len = sizeof(type_data->reserved2); 5383 if (desc_remain < cur_field_len) { 5384 len_to_go -= desc_remain; 5385 cur_offset += desc_remain; 5386 continue; 5387 } 5388 len_to_go -= cur_field_len; 5389 cur_offset += cur_field_len; 5390 desc_remain -= cur_field_len; 5391 5392 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5393 desc_remain, len_to_go, cur_offset, 5394 "Assigning Organization"); 5395 SAFILLDENSSBSTR(type_data, sb, *indent, 5396 medium_type_name, desc_remain, len_to_go, 5397 cur_offset, "Medium type name"); 5398 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5399 desc_remain, len_to_go, cur_offset, "Description"); 5400 } 5401 } 5402 if (need_close != 0) { 5403 SASBENDNODE(sb, *indent, density_entry); 5404 } 5405 5406 bailout: 5407 return; 5408 } 5409 5410 /* 5411 * Fill an sbuf with density data information 5412 */ 5413 static void 5414 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5415 { 5416 int i, is_density; 5417 5418 SASBADDNODE(sb, *indent, mtdensity); 5419 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5420 "Current Medium Density"); 5421 is_density = 0; 5422 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5423 int tmpint; 5424 5425 if (softc->density_info_valid[i] == 0) 5426 continue; 5427 5428 SASBADDNODE(sb, *indent, density_report); 5429 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5430 tmpint = 1; 5431 is_density = 0; 5432 } else { 5433 tmpint = 0; 5434 is_density = 1; 5435 } 5436 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5437 "Medium type report"); 5438 5439 if (softc->density_type_bits[i] & SRDS_MEDIA) 5440 tmpint = 1; 5441 else 5442 tmpint = 0; 5443 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5444 "Media report"); 5445 5446 safilldenstypesb(sb, indent, softc->density_info[i], 5447 softc->density_info_valid[i], is_density); 5448 SASBENDNODE(sb, *indent, density_report); 5449 } 5450 SASBENDNODE(sb, *indent, mtdensity); 5451 } 5452 5453 #endif /* _KERNEL */ 5454 5455 /* 5456 * Read tape block limits command. 5457 */ 5458 void 5459 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5460 void (*cbfcnp)(struct cam_periph *, union ccb *), 5461 u_int8_t tag_action, 5462 struct scsi_read_block_limits_data *rlimit_buf, 5463 u_int8_t sense_len, u_int32_t timeout) 5464 { 5465 struct scsi_read_block_limits *scsi_cmd; 5466 5467 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5468 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5469 sizeof(*scsi_cmd), timeout); 5470 5471 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5472 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5473 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5474 } 5475 5476 void 5477 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5478 void (*cbfcnp)(struct cam_periph *, union ccb *), 5479 u_int8_t tag_action, int readop, int sli, 5480 int fixed, u_int32_t length, u_int8_t *data_ptr, 5481 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5482 { 5483 struct scsi_sa_rw *scsi_cmd; 5484 int read; 5485 5486 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5487 5488 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5489 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5490 scsi_cmd->sli_fixed = 0; 5491 if (sli && read) 5492 scsi_cmd->sli_fixed |= SAR_SLI; 5493 if (fixed) 5494 scsi_cmd->sli_fixed |= SARW_FIXED; 5495 scsi_ulto3b(length, scsi_cmd->length); 5496 scsi_cmd->control = 0; 5497 5498 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5499 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5500 tag_action, data_ptr, dxfer_len, sense_len, 5501 sizeof(*scsi_cmd), timeout); 5502 } 5503 5504 void 5505 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5506 void (*cbfcnp)(struct cam_periph *, union ccb *), 5507 u_int8_t tag_action, int immediate, int eot, 5508 int reten, int load, u_int8_t sense_len, 5509 u_int32_t timeout) 5510 { 5511 struct scsi_load_unload *scsi_cmd; 5512 5513 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5514 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5515 scsi_cmd->opcode = LOAD_UNLOAD; 5516 if (immediate) 5517 scsi_cmd->immediate = SLU_IMMED; 5518 if (eot) 5519 scsi_cmd->eot_reten_load |= SLU_EOT; 5520 if (reten) 5521 scsi_cmd->eot_reten_load |= SLU_RETEN; 5522 if (load) 5523 scsi_cmd->eot_reten_load |= SLU_LOAD; 5524 5525 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5526 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5527 } 5528 5529 void 5530 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5531 void (*cbfcnp)(struct cam_periph *, union ccb *), 5532 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5533 u_int32_t timeout) 5534 { 5535 struct scsi_rewind *scsi_cmd; 5536 5537 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5538 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5539 scsi_cmd->opcode = REWIND; 5540 if (immediate) 5541 scsi_cmd->immediate = SREW_IMMED; 5542 5543 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5544 0, sense_len, sizeof(*scsi_cmd), timeout); 5545 } 5546 5547 void 5548 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5549 void (*cbfcnp)(struct cam_periph *, union ccb *), 5550 u_int8_t tag_action, scsi_space_code code, 5551 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5552 { 5553 struct scsi_space *scsi_cmd; 5554 5555 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5556 scsi_cmd->opcode = SPACE; 5557 scsi_cmd->code = code; 5558 scsi_ulto3b(count, scsi_cmd->count); 5559 scsi_cmd->control = 0; 5560 5561 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5562 0, sense_len, sizeof(*scsi_cmd), timeout); 5563 } 5564 5565 void 5566 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5567 void (*cbfcnp)(struct cam_periph *, union ccb *), 5568 u_int8_t tag_action, int immediate, int setmark, 5569 u_int32_t num_marks, u_int8_t sense_len, 5570 u_int32_t timeout) 5571 { 5572 struct scsi_write_filemarks *scsi_cmd; 5573 5574 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5575 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5576 scsi_cmd->opcode = WRITE_FILEMARKS; 5577 if (immediate) 5578 scsi_cmd->byte2 |= SWFMRK_IMMED; 5579 if (setmark) 5580 scsi_cmd->byte2 |= SWFMRK_WSMK; 5581 5582 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5583 5584 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5585 0, sense_len, sizeof(*scsi_cmd), timeout); 5586 } 5587 5588 /* 5589 * The reserve and release unit commands differ only by their opcodes. 5590 */ 5591 void 5592 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5593 void (*cbfcnp)(struct cam_periph *, union ccb *), 5594 u_int8_t tag_action, int third_party, 5595 int third_party_id, u_int8_t sense_len, 5596 u_int32_t timeout, int reserve) 5597 { 5598 struct scsi_reserve_release_unit *scsi_cmd; 5599 5600 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5601 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5602 5603 if (reserve) 5604 scsi_cmd->opcode = RESERVE_UNIT; 5605 else 5606 scsi_cmd->opcode = RELEASE_UNIT; 5607 5608 if (third_party) { 5609 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5610 scsi_cmd->lun_thirdparty |= 5611 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5612 } 5613 5614 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5615 0, sense_len, sizeof(*scsi_cmd), timeout); 5616 } 5617 5618 void 5619 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5620 void (*cbfcnp)(struct cam_periph *, union ccb *), 5621 u_int8_t tag_action, int immediate, int long_erase, 5622 u_int8_t sense_len, u_int32_t timeout) 5623 { 5624 struct scsi_erase *scsi_cmd; 5625 5626 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5627 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5628 5629 scsi_cmd->opcode = ERASE; 5630 5631 if (immediate) 5632 scsi_cmd->lun_imm_long |= SE_IMMED; 5633 5634 if (long_erase) 5635 scsi_cmd->lun_imm_long |= SE_LONG; 5636 5637 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5638 0, sense_len, sizeof(*scsi_cmd), timeout); 5639 } 5640 5641 /* 5642 * Read Tape Position command. 5643 */ 5644 void 5645 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5646 void (*cbfcnp)(struct cam_periph *, union ccb *), 5647 u_int8_t tag_action, int hardsoft, 5648 struct scsi_tape_position_data *sbp, 5649 u_int8_t sense_len, u_int32_t timeout) 5650 { 5651 struct scsi_tape_read_position *scmd; 5652 5653 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5654 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5655 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5656 bzero(scmd, sizeof(*scmd)); 5657 scmd->opcode = READ_POSITION; 5658 scmd->byte1 = hardsoft; 5659 } 5660 5661 /* 5662 * Read Tape Position command. 5663 */ 5664 void 5665 scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5666 void (*cbfcnp)(struct cam_periph *, union ccb *), 5667 u_int8_t tag_action, int service_action, 5668 u_int8_t *data_ptr, u_int32_t length, 5669 u_int32_t sense_len, u_int32_t timeout) 5670 { 5671 struct scsi_tape_read_position *scmd; 5672 5673 cam_fill_csio(csio, 5674 retries, 5675 cbfcnp, 5676 /*flags*/CAM_DIR_IN, 5677 tag_action, 5678 /*data_ptr*/data_ptr, 5679 /*dxfer_len*/length, 5680 sense_len, 5681 sizeof(*scmd), 5682 timeout); 5683 5684 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5685 bzero(scmd, sizeof(*scmd)); 5686 scmd->opcode = READ_POSITION; 5687 scmd->byte1 = service_action; 5688 /* 5689 * The length is only currently set (as of SSC4r03) if the extended 5690 * form is specified. The other forms have fixed lengths. 5691 */ 5692 if (service_action == SA_RPOS_EXTENDED_FORM) 5693 scsi_ulto2b(length, scmd->length); 5694 } 5695 5696 /* 5697 * Set Tape Position command. 5698 */ 5699 void 5700 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5701 void (*cbfcnp)(struct cam_periph *, union ccb *), 5702 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5703 u_int8_t sense_len, u_int32_t timeout) 5704 { 5705 struct scsi_tape_locate *scmd; 5706 5707 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5708 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5709 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5710 bzero(scmd, sizeof(*scmd)); 5711 scmd->opcode = LOCATE; 5712 if (hardsoft) 5713 scmd->byte1 |= SA_SPOS_BT; 5714 scsi_ulto4b(blkno, scmd->blkaddr); 5715 } 5716 5717 /* 5718 * XXX KDM figure out how to make a compatibility function. 5719 */ 5720 void 5721 scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5722 void (*cbfcnp)(struct cam_periph *, union ccb *), 5723 u_int8_t tag_action, int immed, int cp, int hard, 5724 int64_t partition, u_int32_t block_address, 5725 int sense_len, u_int32_t timeout) 5726 { 5727 struct scsi_tape_locate *scmd; 5728 5729 cam_fill_csio(csio, 5730 retries, 5731 cbfcnp, 5732 CAM_DIR_NONE, 5733 tag_action, 5734 /*data_ptr*/ NULL, 5735 /*dxfer_len*/ 0, 5736 sense_len, 5737 sizeof(*scmd), 5738 timeout); 5739 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5740 bzero(scmd, sizeof(*scmd)); 5741 scmd->opcode = LOCATE; 5742 if (immed) 5743 scmd->byte1 |= SA_SPOS_IMMED; 5744 if (cp) 5745 scmd->byte1 |= SA_SPOS_CP; 5746 if (hard) 5747 scmd->byte1 |= SA_SPOS_BT; 5748 scsi_ulto4b(block_address, scmd->blkaddr); 5749 scmd->partition = partition; 5750 } 5751 5752 void 5753 scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5754 void (*cbfcnp)(struct cam_periph *, union ccb *), 5755 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5756 int bam, int64_t partition, u_int64_t logical_id, 5757 int sense_len, u_int32_t timeout) 5758 { 5759 5760 struct scsi_locate_16 *scsi_cmd; 5761 5762 cam_fill_csio(csio, 5763 retries, 5764 cbfcnp, 5765 /*flags*/CAM_DIR_NONE, 5766 tag_action, 5767 /*data_ptr*/NULL, 5768 /*dxfer_len*/0, 5769 sense_len, 5770 sizeof(*scsi_cmd), 5771 timeout); 5772 5773 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5774 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5775 scsi_cmd->opcode = LOCATE_16; 5776 if (immed) 5777 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5778 if (cp) 5779 scsi_cmd->byte1 |= SA_LC_CP; 5780 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5781 5782 scsi_cmd->byte2 |= bam; 5783 scsi_cmd->partition = partition; 5784 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5785 } 5786 5787 void 5788 scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5789 void (*cbfcnp)(struct cam_periph *, union ccb *), 5790 u_int8_t tag_action, int media, int medium_type, 5791 u_int8_t *data_ptr, u_int32_t length, 5792 u_int32_t sense_len, u_int32_t timeout) 5793 { 5794 struct scsi_report_density_support *scsi_cmd; 5795 5796 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5797 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5798 5799 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5800 if (media != 0) 5801 scsi_cmd->byte1 |= SRDS_MEDIA; 5802 if (medium_type != 0) 5803 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5804 5805 scsi_ulto2b(length, scsi_cmd->length); 5806 5807 cam_fill_csio(csio, 5808 retries, 5809 cbfcnp, 5810 /*flags*/CAM_DIR_IN, 5811 tag_action, 5812 /*data_ptr*/data_ptr, 5813 /*dxfer_len*/length, 5814 sense_len, 5815 sizeof(*scsi_cmd), 5816 timeout); 5817 } 5818 5819 void 5820 scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5821 void (*cbfcnp)(struct cam_periph *, union ccb *), 5822 u_int8_t tag_action, int byte1, u_int32_t proportion, 5823 u_int32_t sense_len, u_int32_t timeout) 5824 { 5825 struct scsi_set_capacity *scsi_cmd; 5826 5827 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5828 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5829 5830 scsi_cmd->opcode = SET_CAPACITY; 5831 5832 scsi_cmd->byte1 = byte1; 5833 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5834 5835 cam_fill_csio(csio, 5836 retries, 5837 cbfcnp, 5838 /*flags*/CAM_DIR_NONE, 5839 tag_action, 5840 /*data_ptr*/NULL, 5841 /*dxfer_len*/0, 5842 sense_len, 5843 sizeof(*scsi_cmd), 5844 timeout); 5845 } 5846 5847 void 5848 scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5849 void (*cbfcnp)(struct cam_periph *, union ccb *), 5850 u_int8_t tag_action, int byte1, int byte2, 5851 u_int8_t *data_ptr, u_int32_t dxfer_len, 5852 u_int32_t sense_len, u_int32_t timeout) 5853 { 5854 struct scsi_format_medium *scsi_cmd; 5855 5856 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5857 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5858 5859 scsi_cmd->opcode = FORMAT_MEDIUM; 5860 5861 scsi_cmd->byte1 = byte1; 5862 scsi_cmd->byte2 = byte2; 5863 5864 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5865 5866 cam_fill_csio(csio, 5867 retries, 5868 cbfcnp, 5869 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5870 tag_action, 5871 /*data_ptr*/ data_ptr, 5872 /*dxfer_len*/ dxfer_len, 5873 sense_len, 5874 sizeof(*scsi_cmd), 5875 timeout); 5876 } 5877 5878 void 5879 scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5880 void (*cbfcnp)(struct cam_periph *, union ccb *), 5881 u_int8_t tag_action, int allow_overwrite, int partition, 5882 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5883 { 5884 struct scsi_allow_overwrite *scsi_cmd; 5885 5886 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5887 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5888 5889 scsi_cmd->opcode = ALLOW_OVERWRITE; 5890 5891 scsi_cmd->allow_overwrite = allow_overwrite; 5892 scsi_cmd->partition = partition; 5893 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5894 5895 cam_fill_csio(csio, 5896 retries, 5897 cbfcnp, 5898 CAM_DIR_NONE, 5899 tag_action, 5900 /*data_ptr*/ NULL, 5901 /*dxfer_len*/ 0, 5902 sense_len, 5903 sizeof(*scsi_cmd), 5904 timeout); 5905 } 5906