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 126 127 128 typedef enum { 129 SA_FLAG_OPEN = 0x0001, 130 SA_FLAG_FIXED = 0x0002, 131 SA_FLAG_TAPE_LOCKED = 0x0004, 132 SA_FLAG_TAPE_MOUNTED = 0x0008, 133 SA_FLAG_TAPE_WP = 0x0010, 134 SA_FLAG_TAPE_WRITTEN = 0x0020, 135 SA_FLAG_EOM_PENDING = 0x0040, 136 SA_FLAG_EIO_PENDING = 0x0080, 137 SA_FLAG_EOF_PENDING = 0x0100, 138 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 139 SA_FLAG_EOF_PENDING), 140 SA_FLAG_INVALID = 0x0200, 141 SA_FLAG_COMP_ENABLED = 0x0400, 142 SA_FLAG_COMP_SUPP = 0x0800, 143 SA_FLAG_COMP_UNSUPP = 0x1000, 144 SA_FLAG_TAPE_FROZEN = 0x2000, 145 SA_FLAG_PROTECT_SUPP = 0x4000, 146 147 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 148 SA_FLAG_COMP_UNSUPP), 149 SA_FLAG_SCTX_INIT = 0x8000 150 } sa_flags; 151 152 typedef enum { 153 SA_MODE_REWIND = 0x00, 154 SA_MODE_NOREWIND = 0x01, 155 SA_MODE_OFFLINE = 0x02 156 } sa_mode; 157 158 typedef enum { 159 SA_PARAM_NONE = 0x000, 160 SA_PARAM_BLOCKSIZE = 0x001, 161 SA_PARAM_DENSITY = 0x002, 162 SA_PARAM_COMPRESSION = 0x004, 163 SA_PARAM_BUFF_MODE = 0x008, 164 SA_PARAM_NUMBLOCKS = 0x010, 165 SA_PARAM_WP = 0x020, 166 SA_PARAM_SPEED = 0x040, 167 SA_PARAM_DENSITY_EXT = 0x080, 168 SA_PARAM_LBP = 0x100, 169 SA_PARAM_ALL = 0x1ff 170 } sa_params; 171 172 typedef enum { 173 SA_QUIRK_NONE = 0x000, 174 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 175 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 176 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 177 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 178 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 179 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 180 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 181 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 182 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 183 } sa_quirks; 184 185 #define SA_QUIRK_BIT_STRING \ 186 "\020" \ 187 "\001NOCOMP" \ 188 "\002FIXED" \ 189 "\003VARIABLE" \ 190 "\0042FM" \ 191 "\0051FM" \ 192 "\006NODREAD" \ 193 "\007NO_MODESEL" \ 194 "\010NO_CPAGE" \ 195 "\011NO_LONG_POS" 196 197 #define SAMODE(z) (dev2unit(z) & 0x3) 198 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 199 200 #define SA_NOT_CTLDEV 0 201 #define SA_CTLDEV 1 202 203 #define SA_ATYPE_R 0 204 #define SA_ATYPE_NR 1 205 #define SA_ATYPE_ER 2 206 #define SA_NUM_ATYPES 3 207 208 #define SAMINOR(ctl, access) \ 209 ((ctl << 4) | (access & 0x3)) 210 211 struct sa_devs { 212 struct cdev *ctl_dev; 213 struct cdev *r_dev; 214 struct cdev *nr_dev; 215 struct cdev *er_dev; 216 }; 217 218 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 219 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 220 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 221 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 222 223 #define SASBADDINT(sb, indent, data, fmt, name) \ 224 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 225 NULL) 226 227 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 228 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 229 desc) 230 231 #define SASBADDUINT(sb, indent, data, fmt, name) \ 232 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 233 NULL) 234 235 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 236 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 237 desc) 238 239 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 240 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 241 NULL) 242 243 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 244 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 245 desc) 246 247 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 248 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 249 250 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 251 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 252 253 #define SASBADDNODE(sb, indent, name) { \ 254 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 255 "node"); \ 256 indent += 2; \ 257 } 258 259 #define SASBADDNODENUM(sb, indent, name, num) { \ 260 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 261 #name, "node", num); \ 262 indent += 2; \ 263 } 264 265 #define SASBENDNODE(sb, indent, name) { \ 266 indent -= 2; \ 267 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 268 } 269 270 #define SA_DENSITY_TYPES 4 271 272 struct sa_prot_state { 273 int initialized; 274 uint32_t prot_method; 275 uint32_t pi_length; 276 uint32_t lbp_w; 277 uint32_t lbp_r; 278 uint32_t rbdp; 279 }; 280 281 struct sa_prot_info { 282 struct sa_prot_state cur_prot_state; 283 struct sa_prot_state pending_prot_state; 284 }; 285 286 /* 287 * A table mapping protection parameters to their types and values. 288 */ 289 struct sa_prot_map { 290 char *name; 291 mt_param_set_type param_type; 292 off_t offset; 293 uint32_t min_val; 294 uint32_t max_val; 295 uint32_t *value; 296 } sa_prot_table[] = { 297 { "prot_method", MT_PARAM_SET_UNSIGNED, 298 __offsetof(struct sa_prot_state, prot_method), 299 /*min_val*/ 0, /*max_val*/ 255, NULL }, 300 { "pi_length", MT_PARAM_SET_UNSIGNED, 301 __offsetof(struct sa_prot_state, pi_length), 302 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 303 { "lbp_w", MT_PARAM_SET_UNSIGNED, 304 __offsetof(struct sa_prot_state, lbp_w), 305 /*min_val*/ 0, /*max_val*/ 1, NULL }, 306 { "lbp_r", MT_PARAM_SET_UNSIGNED, 307 __offsetof(struct sa_prot_state, lbp_r), 308 /*min_val*/ 0, /*max_val*/ 1, NULL }, 309 { "rbdp", MT_PARAM_SET_UNSIGNED, 310 __offsetof(struct sa_prot_state, rbdp), 311 /*min_val*/ 0, /*max_val*/ 1, NULL } 312 }; 313 314 #define SA_NUM_PROT_ENTS nitems(sa_prot_table) 315 316 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 317 && (softc->prot_info.cur_prot_state.initialized != 0) \ 318 && (softc->prot_info.cur_prot_state.prot_method != 0)) 319 320 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 321 322 struct sa_softc { 323 sa_state state; 324 sa_flags flags; 325 sa_quirks quirks; 326 u_int si_flags; 327 struct cam_periph *periph; 328 struct bio_queue_head bio_queue; 329 int queue_count; 330 struct devstat *device_stats; 331 struct sa_devs devs; 332 int open_count; 333 int num_devs_to_destroy; 334 int blk_gran; 335 int blk_mask; 336 int blk_shift; 337 u_int32_t max_blk; 338 u_int32_t min_blk; 339 u_int32_t maxio; 340 u_int32_t cpi_maxio; 341 int allow_io_split; 342 int inject_eom; 343 int set_pews_status; 344 u_int32_t comp_algorithm; 345 u_int32_t saved_comp_algorithm; 346 u_int32_t media_blksize; 347 u_int32_t last_media_blksize; 348 u_int32_t media_numblks; 349 u_int8_t media_density; 350 u_int8_t speed; 351 u_int8_t scsi_rev; 352 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 353 int buffer_mode; 354 int filemarks; 355 union ccb saved_ccb; 356 int last_resid_was_io; 357 uint8_t density_type_bits[SA_DENSITY_TYPES]; 358 int density_info_valid[SA_DENSITY_TYPES]; 359 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 360 361 struct sa_prot_info prot_info; 362 363 int sili; 364 int eot_warn; 365 366 /* 367 * Current position information. -1 means that the given value is 368 * unknown. fileno and blkno are always calculated. blkno is 369 * relative to the previous file mark. rep_fileno and rep_blkno 370 * are as reported by the drive, if it supports the long form 371 * report for the READ POSITION command. rep_blkno is relative to 372 * the beginning of the partition. 373 * 374 * bop means that the drive is at the beginning of the partition. 375 * eop means that the drive is between early warning and end of 376 * partition, inside the current partition. 377 * bpew means that the position is in a PEWZ (Programmable Early 378 * Warning Zone) 379 */ 380 daddr_t partition; /* Absolute from BOT */ 381 daddr_t fileno; /* Relative to beginning of partition */ 382 daddr_t blkno; /* Relative to last file mark */ 383 daddr_t rep_blkno; /* Relative to beginning of partition */ 384 daddr_t rep_fileno; /* Relative to beginning of partition */ 385 int bop; /* Beginning of Partition */ 386 int eop; /* End of Partition */ 387 int bpew; /* Beyond Programmable Early Warning */ 388 389 /* 390 * Latched Error Info 391 */ 392 struct { 393 struct scsi_sense_data _last_io_sense; 394 u_int64_t _last_io_resid; 395 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 396 struct scsi_sense_data _last_ctl_sense; 397 u_int64_t _last_ctl_resid; 398 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 399 #define last_io_sense errinfo._last_io_sense 400 #define last_io_resid errinfo._last_io_resid 401 #define last_io_cdb errinfo._last_io_cdb 402 #define last_ctl_sense errinfo._last_ctl_sense 403 #define last_ctl_resid errinfo._last_ctl_resid 404 #define last_ctl_cdb errinfo._last_ctl_cdb 405 } errinfo; 406 /* 407 * Misc other flags/state 408 */ 409 u_int32_t 410 : 29, 411 open_rdonly : 1, /* open read-only */ 412 open_pending_mount : 1, /* open pending mount */ 413 ctrl_mode : 1; /* control device open */ 414 415 struct task sysctl_task; 416 struct sysctl_ctx_list sysctl_ctx; 417 struct sysctl_oid *sysctl_tree; 418 }; 419 420 struct sa_quirk_entry { 421 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 422 sa_quirks quirks; /* specific quirk type */ 423 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 424 }; 425 426 static struct sa_quirk_entry sa_quirk_table[] = 427 { 428 { 429 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 430 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 431 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 432 }, 433 { 434 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 435 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 436 }, 437 { 438 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 439 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 440 }, 441 { 442 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 443 "Python*", "*"}, SA_QUIRK_NODREAD, 0 444 }, 445 { 446 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 447 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 448 }, 449 { 450 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 451 "VIPER 2525 25462", "-011"}, 452 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 453 }, 454 { 455 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 456 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 457 }, 458 #if 0 459 { 460 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 461 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 462 }, 463 #endif 464 { 465 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 466 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 467 }, 468 { 469 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 470 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 471 }, 472 { 473 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 474 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 475 }, 476 { 477 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 478 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 479 }, 480 { 481 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 482 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 483 }, 484 { 485 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 486 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 487 }, 488 { /* jreynold@primenet.com */ 489 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 490 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 491 }, 492 { /* mike@sentex.net */ 493 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 494 "STT20000*", "*"}, SA_QUIRK_1FM, 0 495 }, 496 { 497 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 498 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 499 }, 500 { 501 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 502 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 503 }, 504 { 505 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 506 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 507 }, 508 { 509 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 510 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 511 }, 512 { 513 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 514 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 515 }, 516 { 517 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 518 " SLR*", "*"}, SA_QUIRK_1FM, 0 519 }, 520 { 521 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 522 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 523 }, 524 { 525 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 526 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 527 } 528 }; 529 530 static d_open_t saopen; 531 static d_close_t saclose; 532 static d_strategy_t sastrategy; 533 static d_ioctl_t saioctl; 534 static periph_init_t sainit; 535 static periph_ctor_t saregister; 536 static periph_oninv_t saoninvalidate; 537 static periph_dtor_t sacleanup; 538 static periph_start_t sastart; 539 static void saasync(void *callback_arg, u_int32_t code, 540 struct cam_path *path, void *arg); 541 static void sadone(struct cam_periph *periph, 542 union ccb *start_ccb); 543 static int saerror(union ccb *ccb, u_int32_t cam_flags, 544 u_int32_t sense_flags); 545 static int samarkswanted(struct cam_periph *); 546 static int sacheckeod(struct cam_periph *periph); 547 static int sagetparams(struct cam_periph *periph, 548 sa_params params_to_get, 549 u_int32_t *blocksize, u_int8_t *density, 550 u_int32_t *numblocks, int *buff_mode, 551 u_int8_t *write_protect, u_int8_t *speed, 552 int *comp_supported, int *comp_enabled, 553 u_int32_t *comp_algorithm, 554 sa_comp_t *comp_page, 555 struct scsi_control_data_prot_subpage 556 *prot_page, int dp_size, 557 int prot_changeable); 558 static int sasetprot(struct cam_periph *periph, 559 struct sa_prot_state *new_prot); 560 static int sasetparams(struct cam_periph *periph, 561 sa_params params_to_set, 562 u_int32_t blocksize, u_int8_t density, 563 u_int32_t comp_algorithm, 564 u_int32_t sense_flags); 565 static int sasetsili(struct cam_periph *periph, 566 struct mtparamset *ps, int num_params); 567 static int saseteotwarn(struct cam_periph *periph, 568 struct mtparamset *ps, int num_params); 569 static void safillprot(struct sa_softc *softc, int *indent, 570 struct sbuf *sb); 571 static void sapopulateprots(struct sa_prot_state *cur_state, 572 struct sa_prot_map *new_table, 573 int table_ents); 574 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 575 int table_ents); 576 static int sasetprotents(struct cam_periph *periph, 577 struct mtparamset *ps, int num_params); 578 static struct sa_param_ent *safindparament(struct mtparamset *ps); 579 static int saparamsetlist(struct cam_periph *periph, 580 struct mtsetlist *list, int need_copy); 581 static int saextget(struct cdev *dev, struct cam_periph *periph, 582 struct sbuf *sb, struct mtextget *g); 583 static int saparamget(struct sa_softc *softc, struct sbuf *sb); 584 static void saprevent(struct cam_periph *periph, int action); 585 static int sarewind(struct cam_periph *periph); 586 static int saspace(struct cam_periph *periph, int count, 587 scsi_space_code code); 588 static void sadevgonecb(void *arg); 589 static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 590 static int samount(struct cam_periph *, int, struct cdev *); 591 static int saretension(struct cam_periph *periph); 592 static int sareservereleaseunit(struct cam_periph *periph, 593 int reserve); 594 static int saloadunload(struct cam_periph *periph, int load); 595 static int saerase(struct cam_periph *periph, int longerase); 596 static int sawritefilemarks(struct cam_periph *periph, 597 int nmarks, int setmarks, int immed); 598 static int sagetpos(struct cam_periph *periph); 599 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 600 static int sasetpos(struct cam_periph *periph, int, 601 struct mtlocate *); 602 static void safilldenstypesb(struct sbuf *sb, int *indent, 603 uint8_t *buf, int buf_len, 604 int is_density); 605 static void safilldensitysb(struct sa_softc *softc, int *indent, 606 struct sbuf *sb); 607 608 609 #ifndef SA_DEFAULT_IO_SPLIT 610 #define SA_DEFAULT_IO_SPLIT 0 611 #endif 612 613 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 614 615 /* 616 * Tunable to allow the user to set a global allow_io_split value. Note 617 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 618 * is bad behavior, because it hides the true tape block size from the 619 * application. 620 */ 621 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 622 "CAM Sequential Access Tape Driver"); 623 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 624 &sa_allow_io_split, 0, "Default I/O split value"); 625 626 static struct periph_driver sadriver = 627 { 628 sainit, "sa", 629 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 630 }; 631 632 PERIPHDRIVER_DECLARE(sa, sadriver); 633 634 /* For 2.2-stable support */ 635 #ifndef D_TAPE 636 #define D_TAPE 0 637 #endif 638 639 640 static struct cdevsw sa_cdevsw = { 641 .d_version = D_VERSION, 642 .d_open = saopen, 643 .d_close = saclose, 644 .d_read = physread, 645 .d_write = physwrite, 646 .d_ioctl = saioctl, 647 .d_strategy = sastrategy, 648 .d_name = "sa", 649 .d_flags = D_TAPE | D_TRACKCLOSE, 650 }; 651 652 static int 653 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 654 { 655 struct cam_periph *periph; 656 struct sa_softc *softc; 657 int error; 658 659 periph = (struct cam_periph *)dev->si_drv1; 660 if (cam_periph_acquire(periph) != 0) { 661 return (ENXIO); 662 } 663 664 cam_periph_lock(periph); 665 666 softc = (struct sa_softc *)periph->softc; 667 668 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 669 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 670 671 if (SA_IS_CTRL(dev)) { 672 softc->ctrl_mode = 1; 673 softc->open_count++; 674 cam_periph_unlock(periph); 675 return (0); 676 } 677 678 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 679 cam_periph_unlock(periph); 680 cam_periph_release(periph); 681 return (error); 682 } 683 684 if (softc->flags & SA_FLAG_OPEN) { 685 error = EBUSY; 686 } else if (softc->flags & SA_FLAG_INVALID) { 687 error = ENXIO; 688 } else { 689 /* 690 * Preserve whether this is a read_only open. 691 */ 692 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 693 694 /* 695 * The function samount ensures media is loaded and ready. 696 * It also does a device RESERVE if the tape isn't yet mounted. 697 * 698 * If the mount fails and this was a non-blocking open, 699 * make this a 'open_pending_mount' action. 700 */ 701 error = samount(periph, flags, dev); 702 if (error && (flags & O_NONBLOCK)) { 703 softc->flags |= SA_FLAG_OPEN; 704 softc->open_pending_mount = 1; 705 softc->open_count++; 706 cam_periph_unhold(periph); 707 cam_periph_unlock(periph); 708 return (0); 709 } 710 } 711 712 if (error) { 713 cam_periph_unhold(periph); 714 cam_periph_unlock(periph); 715 cam_periph_release(periph); 716 return (error); 717 } 718 719 saprevent(periph, PR_PREVENT); 720 softc->flags |= SA_FLAG_OPEN; 721 softc->open_count++; 722 723 cam_periph_unhold(periph); 724 cam_periph_unlock(periph); 725 return (error); 726 } 727 728 static int 729 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 730 { 731 struct cam_periph *periph; 732 struct sa_softc *softc; 733 int mode, error, writing, tmp, i; 734 int closedbits = SA_FLAG_OPEN; 735 736 mode = SAMODE(dev); 737 periph = (struct cam_periph *)dev->si_drv1; 738 cam_periph_lock(periph); 739 740 softc = (struct sa_softc *)periph->softc; 741 742 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 743 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 744 745 746 softc->open_rdonly = 0; 747 if (SA_IS_CTRL(dev)) { 748 softc->ctrl_mode = 0; 749 softc->open_count--; 750 cam_periph_unlock(periph); 751 cam_periph_release(periph); 752 return (0); 753 } 754 755 if (softc->open_pending_mount) { 756 softc->flags &= ~SA_FLAG_OPEN; 757 softc->open_pending_mount = 0; 758 softc->open_count--; 759 cam_periph_unlock(periph); 760 cam_periph_release(periph); 761 return (0); 762 } 763 764 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 765 cam_periph_unlock(periph); 766 return (error); 767 } 768 769 /* 770 * Were we writing the tape? 771 */ 772 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 773 774 /* 775 * See whether or not we need to write filemarks. If this 776 * fails, we probably have to assume we've lost tape 777 * position. 778 */ 779 error = sacheckeod(periph); 780 if (error) { 781 xpt_print(periph->path, 782 "failed to write terminating filemark(s)\n"); 783 softc->flags |= SA_FLAG_TAPE_FROZEN; 784 } 785 786 /* 787 * Whatever we end up doing, allow users to eject tapes from here on. 788 */ 789 saprevent(periph, PR_ALLOW); 790 791 /* 792 * Decide how to end... 793 */ 794 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 795 closedbits |= SA_FLAG_TAPE_FROZEN; 796 } else switch (mode) { 797 case SA_MODE_OFFLINE: 798 /* 799 * An 'offline' close is an unconditional release of 800 * frozen && mount conditions, irrespective of whether 801 * these operations succeeded. The reason for this is 802 * to allow at least some kind of programmatic way 803 * around our state getting all fouled up. If somebody 804 * issues an 'offline' command, that will be allowed 805 * to clear state. 806 */ 807 (void) sarewind(periph); 808 (void) saloadunload(periph, FALSE); 809 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 810 break; 811 case SA_MODE_REWIND: 812 /* 813 * If the rewind fails, return an error- if anyone cares, 814 * but not overwriting any previous error. 815 * 816 * We don't clear the notion of mounted here, but we do 817 * clear the notion of frozen if we successfully rewound. 818 */ 819 tmp = sarewind(periph); 820 if (tmp) { 821 if (error != 0) 822 error = tmp; 823 } else { 824 closedbits |= SA_FLAG_TAPE_FROZEN; 825 } 826 break; 827 case SA_MODE_NOREWIND: 828 /* 829 * If we're not rewinding/unloading the tape, find out 830 * whether we need to back up over one of two filemarks 831 * we wrote (if we wrote two filemarks) so that appends 832 * from this point on will be sane. 833 */ 834 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 835 tmp = saspace(periph, -1, SS_FILEMARKS); 836 if (tmp) { 837 xpt_print(periph->path, "unable to backspace " 838 "over one of double filemarks at end of " 839 "tape\n"); 840 xpt_print(periph->path, "it is possible that " 841 "this device needs a SA_QUIRK_1FM quirk set" 842 "for it\n"); 843 softc->flags |= SA_FLAG_TAPE_FROZEN; 844 } 845 } 846 break; 847 default: 848 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 849 /* NOTREACHED */ 850 break; 851 } 852 853 /* 854 * We wish to note here that there are no more filemarks to be written. 855 */ 856 softc->filemarks = 0; 857 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 858 859 /* 860 * And we are no longer open for business. 861 */ 862 softc->flags &= ~closedbits; 863 softc->open_count--; 864 865 /* 866 * Invalidate any density information that depends on having tape 867 * media in the drive. 868 */ 869 for (i = 0; i < SA_DENSITY_TYPES; i++) { 870 if (softc->density_type_bits[i] & SRDS_MEDIA) 871 softc->density_info_valid[i] = 0; 872 } 873 874 /* 875 * Inform users if tape state if frozen.... 876 */ 877 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 878 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 879 "REWIND or MTEOM command to clear this state.\n"); 880 } 881 882 /* release the device if it is no longer mounted */ 883 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 884 sareservereleaseunit(periph, FALSE); 885 886 cam_periph_unhold(periph); 887 cam_periph_unlock(periph); 888 cam_periph_release(periph); 889 890 return (error); 891 } 892 893 /* 894 * Actually translate the requested transfer into one the physical driver 895 * can understand. The transfer is described by a buf and will include 896 * only one physical transfer. 897 */ 898 static void 899 sastrategy(struct bio *bp) 900 { 901 struct cam_periph *periph; 902 struct sa_softc *softc; 903 904 bp->bio_resid = bp->bio_bcount; 905 if (SA_IS_CTRL(bp->bio_dev)) { 906 biofinish(bp, NULL, EINVAL); 907 return; 908 } 909 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 910 cam_periph_lock(periph); 911 912 softc = (struct sa_softc *)periph->softc; 913 914 if (softc->flags & SA_FLAG_INVALID) { 915 cam_periph_unlock(periph); 916 biofinish(bp, NULL, ENXIO); 917 return; 918 } 919 920 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 921 cam_periph_unlock(periph); 922 biofinish(bp, NULL, EPERM); 923 return; 924 } 925 926 /* 927 * This should actually never occur as the write(2) 928 * system call traps attempts to write to a read-only 929 * file descriptor. 930 */ 931 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 932 cam_periph_unlock(periph); 933 biofinish(bp, NULL, EBADF); 934 return; 935 } 936 937 if (softc->open_pending_mount) { 938 int error = samount(periph, 0, bp->bio_dev); 939 if (error) { 940 cam_periph_unlock(periph); 941 biofinish(bp, NULL, ENXIO); 942 return; 943 } 944 saprevent(periph, PR_PREVENT); 945 softc->open_pending_mount = 0; 946 } 947 948 949 /* 950 * If it's a null transfer, return immediately 951 */ 952 if (bp->bio_bcount == 0) { 953 cam_periph_unlock(periph); 954 biodone(bp); 955 return; 956 } 957 958 /* valid request? */ 959 if (softc->flags & SA_FLAG_FIXED) { 960 /* 961 * Fixed block device. The byte count must 962 * be a multiple of our block size. 963 */ 964 if (((softc->blk_mask != ~0) && 965 ((bp->bio_bcount & softc->blk_mask) != 0)) || 966 ((softc->blk_mask == ~0) && 967 ((bp->bio_bcount % softc->min_blk) != 0))) { 968 xpt_print(periph->path, "Invalid request. Fixed block " 969 "device requests must be a multiple of %d bytes\n", 970 softc->min_blk); 971 cam_periph_unlock(periph); 972 biofinish(bp, NULL, EINVAL); 973 return; 974 } 975 } else if ((bp->bio_bcount > softc->max_blk) || 976 (bp->bio_bcount < softc->min_blk) || 977 (bp->bio_bcount & softc->blk_mask) != 0) { 978 979 xpt_print_path(periph->path); 980 printf("Invalid request. Variable block " 981 "device requests must be "); 982 if (softc->blk_mask != 0) { 983 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 984 } 985 printf("between %d and %d bytes\n", softc->min_blk, 986 softc->max_blk); 987 cam_periph_unlock(periph); 988 biofinish(bp, NULL, EINVAL); 989 return; 990 } 991 992 /* 993 * Place it at the end of the queue. 994 */ 995 bioq_insert_tail(&softc->bio_queue, bp); 996 softc->queue_count++; 997 #if 0 998 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 999 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 1000 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 1001 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1002 #endif 1003 if (softc->queue_count > 1) { 1004 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1005 ("sastrategy: queue count now %d\n", softc->queue_count)); 1006 } 1007 1008 /* 1009 * Schedule ourselves for performing the work. 1010 */ 1011 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1012 cam_periph_unlock(periph); 1013 1014 return; 1015 } 1016 1017 static int 1018 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1019 { 1020 uint32_t sili_blocksize; 1021 struct sa_softc *softc; 1022 int error; 1023 1024 error = 0; 1025 softc = (struct sa_softc *)periph->softc; 1026 1027 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1028 snprintf(ps->error_str, sizeof(ps->error_str), 1029 "sili is a signed parameter"); 1030 goto bailout; 1031 } 1032 if ((ps->value.value_signed < 0) 1033 || (ps->value.value_signed > 1)) { 1034 snprintf(ps->error_str, sizeof(ps->error_str), 1035 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1036 goto bailout_error; 1037 } 1038 /* 1039 * We only set the SILI flag in variable block 1040 * mode. You'll get a check condition in fixed 1041 * block mode if things don't line up in any case. 1042 */ 1043 if (softc->flags & SA_FLAG_FIXED) { 1044 snprintf(ps->error_str, sizeof(ps->error_str), 1045 "can't set sili bit in fixed block mode"); 1046 goto bailout_error; 1047 } 1048 if (softc->sili == ps->value.value_signed) 1049 goto bailout; 1050 1051 if (ps->value.value_signed == 1) 1052 sili_blocksize = 4; 1053 else 1054 sili_blocksize = 0; 1055 1056 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1057 sili_blocksize, 0, 0, SF_QUIET_IR); 1058 if (error != 0) { 1059 snprintf(ps->error_str, sizeof(ps->error_str), 1060 "sasetparams() returned error %d", error); 1061 goto bailout_error; 1062 } 1063 1064 softc->sili = ps->value.value_signed; 1065 1066 bailout: 1067 ps->status = MT_PARAM_STATUS_OK; 1068 return (error); 1069 1070 bailout_error: 1071 ps->status = MT_PARAM_STATUS_ERROR; 1072 if (error == 0) 1073 error = EINVAL; 1074 1075 return (error); 1076 } 1077 1078 static int 1079 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1080 { 1081 struct sa_softc *softc; 1082 int error; 1083 1084 error = 0; 1085 softc = (struct sa_softc *)periph->softc; 1086 1087 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1088 snprintf(ps->error_str, sizeof(ps->error_str), 1089 "eot_warn is a signed parameter"); 1090 ps->status = MT_PARAM_STATUS_ERROR; 1091 goto bailout; 1092 } 1093 if ((ps->value.value_signed < 0) 1094 || (ps->value.value_signed > 1)) { 1095 snprintf(ps->error_str, sizeof(ps->error_str), 1096 "invalid eot_warn value %jd\n", 1097 (intmax_t)ps->value.value_signed); 1098 ps->status = MT_PARAM_STATUS_ERROR; 1099 goto bailout; 1100 } 1101 softc->eot_warn = ps->value.value_signed; 1102 ps->status = MT_PARAM_STATUS_OK; 1103 bailout: 1104 if (ps->status != MT_PARAM_STATUS_OK) 1105 error = EINVAL; 1106 1107 return (error); 1108 } 1109 1110 1111 static void 1112 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1113 { 1114 int tmpint; 1115 1116 SASBADDNODE(sb, *indent, protection); 1117 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1118 tmpint = 1; 1119 else 1120 tmpint = 0; 1121 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1122 "Set to 1 if protection information is supported"); 1123 1124 if ((tmpint != 0) 1125 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1126 struct sa_prot_state *prot; 1127 1128 prot = &softc->prot_info.cur_prot_state; 1129 1130 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1131 prot_method, "Current Protection Method"); 1132 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1133 pi_length, "Length of Protection Information"); 1134 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1135 lbp_w, "Check Protection on Writes"); 1136 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1137 lbp_r, "Check and Include Protection on Reads"); 1138 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1139 rbdp, "Transfer Protection Information for RECOVER " 1140 "BUFFERED DATA command"); 1141 } 1142 SASBENDNODE(sb, *indent, protection); 1143 } 1144 1145 static void 1146 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1147 int table_ents) 1148 { 1149 int i; 1150 1151 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1152 sizeof(sa_prot_table))); 1153 1154 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1155 1156 for (i = 0; i < table_ents; i++) 1157 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1158 new_table[i].offset); 1159 1160 return; 1161 } 1162 1163 static struct sa_prot_map * 1164 safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1165 { 1166 char *prot_name = "protection."; 1167 int i, prot_len; 1168 1169 prot_len = strlen(prot_name); 1170 1171 /* 1172 * This shouldn't happen, but we check just in case. 1173 */ 1174 if (strncmp(name, prot_name, prot_len) != 0) 1175 goto bailout; 1176 1177 for (i = 0; i < table_ents; i++) { 1178 if (strcmp(&name[prot_len], table[i].name) != 0) 1179 continue; 1180 return (&table[i]); 1181 } 1182 bailout: 1183 return (NULL); 1184 } 1185 1186 static int 1187 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1188 { 1189 struct sa_softc *softc; 1190 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1191 struct sa_prot_state new_state; 1192 int error; 1193 int i; 1194 1195 softc = (struct sa_softc *)periph->softc; 1196 error = 0; 1197 1198 /* 1199 * Make sure that this tape drive supports protection information. 1200 * Otherwise we can't set anything. 1201 */ 1202 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1203 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1204 "Protection information is not supported for this device"); 1205 ps[0].status = MT_PARAM_STATUS_ERROR; 1206 goto bailout; 1207 } 1208 1209 /* 1210 * We can't operate with physio(9) splitting enabled, because there 1211 * is no way to insure (especially in variable block mode) that 1212 * what the user writes (with a checksum block at the end) will 1213 * make it into the sa(4) driver intact. 1214 */ 1215 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1216 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1217 "Protection information cannot be enabled with I/O " 1218 "splitting"); 1219 ps[0].status = MT_PARAM_STATUS_ERROR; 1220 goto bailout; 1221 } 1222 1223 /* 1224 * Take the current cached protection state and use that as the 1225 * basis for our new entries. 1226 */ 1227 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1228 1229 /* 1230 * Populate the table mapping property names to pointers into the 1231 * state structure. 1232 */ 1233 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1234 1235 /* 1236 * For each parameter the user passed in, make sure the name, type 1237 * and value are valid. 1238 */ 1239 for (i = 0; i < num_params; i++) { 1240 struct sa_prot_map *ent; 1241 1242 ent = safindprotent(ps[i].value_name, prot_ents, 1243 SA_NUM_PROT_ENTS); 1244 if (ent == NULL) { 1245 ps[i].status = MT_PARAM_STATUS_ERROR; 1246 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1247 "Invalid protection entry name %s", 1248 ps[i].value_name); 1249 error = EINVAL; 1250 goto bailout; 1251 } 1252 if (ent->param_type != ps[i].value_type) { 1253 ps[i].status = MT_PARAM_STATUS_ERROR; 1254 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1255 "Supplied type %d does not match actual type %d", 1256 ps[i].value_type, ent->param_type); 1257 error = EINVAL; 1258 goto bailout; 1259 } 1260 if ((ps[i].value.value_unsigned < ent->min_val) 1261 || (ps[i].value.value_unsigned > ent->max_val)) { 1262 ps[i].status = MT_PARAM_STATUS_ERROR; 1263 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1264 "Value %ju is outside valid range %u - %u", 1265 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1266 ent->max_val); 1267 error = EINVAL; 1268 goto bailout; 1269 } 1270 *(ent->value) = ps[i].value.value_unsigned; 1271 } 1272 1273 /* 1274 * Actually send the protection settings to the drive. 1275 */ 1276 error = sasetprot(periph, &new_state); 1277 if (error != 0) { 1278 for (i = 0; i < num_params; i++) { 1279 ps[i].status = MT_PARAM_STATUS_ERROR; 1280 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1281 "Unable to set parameter, see dmesg(8)"); 1282 } 1283 goto bailout; 1284 } 1285 1286 /* 1287 * Let the user know that his settings were stored successfully. 1288 */ 1289 for (i = 0; i < num_params; i++) 1290 ps[i].status = MT_PARAM_STATUS_OK; 1291 1292 bailout: 1293 return (error); 1294 } 1295 /* 1296 * Entry handlers generally only handle a single entry. Node handlers will 1297 * handle a contiguous range of parameters to set in a single call. 1298 */ 1299 typedef enum { 1300 SA_PARAM_TYPE_ENTRY, 1301 SA_PARAM_TYPE_NODE 1302 } sa_param_type; 1303 1304 struct sa_param_ent { 1305 char *name; 1306 sa_param_type param_type; 1307 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1308 int num_params); 1309 } sa_param_table[] = { 1310 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1311 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1312 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1313 }; 1314 1315 static struct sa_param_ent * 1316 safindparament(struct mtparamset *ps) 1317 { 1318 unsigned int i; 1319 1320 for (i = 0; i < nitems(sa_param_table); i++){ 1321 /* 1322 * For entries, we compare all of the characters. For 1323 * nodes, we only compare the first N characters. The node 1324 * handler will decode the rest. 1325 */ 1326 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1327 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1328 continue; 1329 } else { 1330 if (strncmp(ps->value_name, sa_param_table[i].name, 1331 strlen(sa_param_table[i].name)) != 0) 1332 continue; 1333 } 1334 return (&sa_param_table[i]); 1335 } 1336 1337 return (NULL); 1338 } 1339 1340 /* 1341 * Go through a list of parameters, coalescing contiguous parameters with 1342 * the same parent node into a single call to a set_func. 1343 */ 1344 static int 1345 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1346 int need_copy) 1347 { 1348 int i, contig_ents; 1349 int error; 1350 struct mtparamset *params, *first; 1351 struct sa_param_ent *first_ent; 1352 1353 error = 0; 1354 params = NULL; 1355 1356 if (list->num_params == 0) 1357 /* Nothing to do */ 1358 goto bailout; 1359 1360 /* 1361 * Verify that the user has the correct structure size. 1362 */ 1363 if ((list->num_params * sizeof(struct mtparamset)) != 1364 list->param_len) { 1365 xpt_print(periph->path, "%s: length of params %d != " 1366 "sizeof(struct mtparamset) %zd * num_params %d\n", 1367 __func__, list->param_len, sizeof(struct mtparamset), 1368 list->num_params); 1369 error = EINVAL; 1370 goto bailout; 1371 } 1372 1373 if (need_copy != 0) { 1374 /* 1375 * XXX KDM will dropping the lock cause an issue here? 1376 */ 1377 cam_periph_unlock(periph); 1378 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1379 error = copyin(list->params, params, list->param_len); 1380 cam_periph_lock(periph); 1381 1382 if (error != 0) 1383 goto bailout; 1384 } else { 1385 params = list->params; 1386 } 1387 1388 contig_ents = 0; 1389 first = NULL; 1390 first_ent = NULL; 1391 for (i = 0; i < list->num_params; i++) { 1392 struct sa_param_ent *ent; 1393 1394 ent = safindparament(¶ms[i]); 1395 if (ent == NULL) { 1396 snprintf(params[i].error_str, 1397 sizeof(params[i].error_str), 1398 "%s: cannot find parameter %s", __func__, 1399 params[i].value_name); 1400 params[i].status = MT_PARAM_STATUS_ERROR; 1401 break; 1402 } 1403 1404 if (first != NULL) { 1405 if (first_ent == ent) { 1406 /* 1407 * We're still in a contiguous list of 1408 * parameters that can be handled by one 1409 * node handler. 1410 */ 1411 contig_ents++; 1412 continue; 1413 } else { 1414 error = first_ent->set_func(periph, first, 1415 contig_ents); 1416 first = NULL; 1417 first_ent = NULL; 1418 contig_ents = 0; 1419 if (error != 0) { 1420 error = 0; 1421 break; 1422 } 1423 } 1424 } 1425 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1426 first = ¶ms[i]; 1427 first_ent = ent; 1428 contig_ents = 1; 1429 } else { 1430 error = ent->set_func(periph, ¶ms[i], 1); 1431 if (error != 0) { 1432 error = 0; 1433 break; 1434 } 1435 } 1436 } 1437 if (first != NULL) 1438 first_ent->set_func(periph, first, contig_ents); 1439 1440 bailout: 1441 if (need_copy != 0) { 1442 if (error != EFAULT) { 1443 cam_periph_unlock(periph); 1444 copyout(params, list->params, list->param_len); 1445 cam_periph_lock(periph); 1446 } 1447 free(params, M_SCSISA); 1448 } 1449 return (error); 1450 } 1451 1452 static int 1453 sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1454 { 1455 struct sa_softc *softc; 1456 u_int8_t write_protect; 1457 int comp_enabled, comp_supported, error; 1458 1459 softc = (struct sa_softc *)periph->softc; 1460 1461 if (softc->open_pending_mount) 1462 return (0); 1463 1464 /* The control device may issue getparams() if there are no opens. */ 1465 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1466 return (0); 1467 1468 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1469 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1470 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1471 &softc->comp_algorithm, NULL, NULL, 0, 0); 1472 if (error) 1473 return (error); 1474 if (write_protect) 1475 softc->flags |= SA_FLAG_TAPE_WP; 1476 else 1477 softc->flags &= ~SA_FLAG_TAPE_WP; 1478 softc->flags &= ~SA_FLAG_COMPRESSION; 1479 if (comp_supported) { 1480 if (softc->saved_comp_algorithm == 0) 1481 softc->saved_comp_algorithm = 1482 softc->comp_algorithm; 1483 softc->flags |= SA_FLAG_COMP_SUPP; 1484 if (comp_enabled) 1485 softc->flags |= SA_FLAG_COMP_ENABLED; 1486 } else 1487 softc->flags |= SA_FLAG_COMP_UNSUPP; 1488 1489 return (0); 1490 } 1491 1492 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1493 if (softc->open_pending_mount) { \ 1494 error = samount(periph, 0, dev); \ 1495 if (error) { \ 1496 break; \ 1497 } \ 1498 saprevent(periph, PR_PREVENT); \ 1499 softc->open_pending_mount = 0; \ 1500 } 1501 1502 static int 1503 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1504 { 1505 struct cam_periph *periph; 1506 struct sa_softc *softc; 1507 scsi_space_code spaceop; 1508 int didlockperiph = 0; 1509 int mode; 1510 int error = 0; 1511 1512 mode = SAMODE(dev); 1513 error = 0; /* shut up gcc */ 1514 spaceop = 0; /* shut up gcc */ 1515 1516 periph = (struct cam_periph *)dev->si_drv1; 1517 cam_periph_lock(periph); 1518 softc = (struct sa_softc *)periph->softc; 1519 1520 /* 1521 * Check for control mode accesses. We allow MTIOCGET and 1522 * MTIOCERRSTAT (but need to be the only one open in order 1523 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1524 * and MTCOMP (but need to be the only one accessing this 1525 * device to run those). 1526 */ 1527 1528 if (SA_IS_CTRL(dev)) { 1529 switch (cmd) { 1530 case MTIOCGETEOTMODEL: 1531 case MTIOCGET: 1532 case MTIOCEXTGET: 1533 case MTIOCPARAMGET: 1534 case MTIOCRBLIM: 1535 break; 1536 case MTIOCERRSTAT: 1537 /* 1538 * If the periph isn't already locked, lock it 1539 * so our MTIOCERRSTAT can reset latched error stats. 1540 * 1541 * If the periph is already locked, skip it because 1542 * we're just getting status and it'll be up to the 1543 * other thread that has this device open to do 1544 * an MTIOCERRSTAT that would clear latched status. 1545 */ 1546 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1547 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1548 if (error != 0) { 1549 cam_periph_unlock(periph); 1550 return (error); 1551 } 1552 didlockperiph = 1; 1553 } 1554 break; 1555 1556 case MTIOCTOP: 1557 { 1558 struct mtop *mt = (struct mtop *) arg; 1559 1560 /* 1561 * Check to make sure it's an OP we can perform 1562 * with no media inserted. 1563 */ 1564 switch (mt->mt_op) { 1565 case MTSETBSIZ: 1566 case MTSETDNSTY: 1567 case MTCOMP: 1568 mt = NULL; 1569 /* FALLTHROUGH */ 1570 default: 1571 break; 1572 } 1573 if (mt != NULL) { 1574 break; 1575 } 1576 /* FALLTHROUGH */ 1577 } 1578 case MTIOCSETEOTMODEL: 1579 /* 1580 * We need to acquire the peripheral here rather 1581 * than at open time because we are sharing writable 1582 * access to data structures. 1583 */ 1584 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1585 if (error != 0) { 1586 cam_periph_unlock(periph); 1587 return (error); 1588 } 1589 didlockperiph = 1; 1590 break; 1591 1592 default: 1593 cam_periph_unlock(periph); 1594 return (EINVAL); 1595 } 1596 } 1597 1598 /* 1599 * Find the device that the user is talking about 1600 */ 1601 switch (cmd) { 1602 case MTIOCGET: 1603 { 1604 struct mtget *g = (struct mtget *)arg; 1605 1606 error = sagetparams_common(dev, periph); 1607 if (error) 1608 break; 1609 bzero(g, sizeof(struct mtget)); 1610 g->mt_type = MT_ISAR; 1611 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1612 g->mt_comp = MT_COMP_UNSUPP; 1613 g->mt_comp0 = MT_COMP_UNSUPP; 1614 g->mt_comp1 = MT_COMP_UNSUPP; 1615 g->mt_comp2 = MT_COMP_UNSUPP; 1616 g->mt_comp3 = MT_COMP_UNSUPP; 1617 } else { 1618 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1619 g->mt_comp = MT_COMP_DISABLED; 1620 } else { 1621 g->mt_comp = softc->comp_algorithm; 1622 } 1623 g->mt_comp0 = softc->comp_algorithm; 1624 g->mt_comp1 = softc->comp_algorithm; 1625 g->mt_comp2 = softc->comp_algorithm; 1626 g->mt_comp3 = softc->comp_algorithm; 1627 } 1628 g->mt_density = softc->media_density; 1629 g->mt_density0 = softc->media_density; 1630 g->mt_density1 = softc->media_density; 1631 g->mt_density2 = softc->media_density; 1632 g->mt_density3 = softc->media_density; 1633 g->mt_blksiz = softc->media_blksize; 1634 g->mt_blksiz0 = softc->media_blksize; 1635 g->mt_blksiz1 = softc->media_blksize; 1636 g->mt_blksiz2 = softc->media_blksize; 1637 g->mt_blksiz3 = softc->media_blksize; 1638 g->mt_fileno = softc->fileno; 1639 g->mt_blkno = softc->blkno; 1640 g->mt_dsreg = (short) softc->dsreg; 1641 /* 1642 * Yes, we know that this is likely to overflow 1643 */ 1644 if (softc->last_resid_was_io) { 1645 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1646 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1647 softc->last_io_resid = 0; 1648 } 1649 } 1650 } else { 1651 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1652 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1653 softc->last_ctl_resid = 0; 1654 } 1655 } 1656 } 1657 error = 0; 1658 break; 1659 } 1660 case MTIOCEXTGET: 1661 case MTIOCPARAMGET: 1662 { 1663 struct mtextget *g = (struct mtextget *)arg; 1664 char *tmpstr2; 1665 struct sbuf *sb; 1666 1667 /* 1668 * Report drive status using an XML format. 1669 */ 1670 1671 /* 1672 * XXX KDM will dropping the lock cause any problems here? 1673 */ 1674 cam_periph_unlock(periph); 1675 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1676 if (sb == NULL) { 1677 g->status = MT_EXT_GET_ERROR; 1678 snprintf(g->error_str, sizeof(g->error_str), 1679 "Unable to allocate %d bytes for status info", 1680 g->alloc_len); 1681 cam_periph_lock(periph); 1682 goto extget_bailout; 1683 } 1684 cam_periph_lock(periph); 1685 1686 if (cmd == MTIOCEXTGET) 1687 error = saextget(dev, periph, sb, g); 1688 else 1689 error = saparamget(softc, sb); 1690 1691 if (error != 0) 1692 goto extget_bailout; 1693 1694 error = sbuf_finish(sb); 1695 if (error == ENOMEM) { 1696 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1697 error = 0; 1698 } else if (error != 0) { 1699 g->status = MT_EXT_GET_ERROR; 1700 snprintf(g->error_str, sizeof(g->error_str), 1701 "Error %d returned from sbuf_finish()", error); 1702 } else 1703 g->status = MT_EXT_GET_OK; 1704 1705 error = 0; 1706 tmpstr2 = sbuf_data(sb); 1707 g->fill_len = strlen(tmpstr2) + 1; 1708 cam_periph_unlock(periph); 1709 1710 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1711 1712 cam_periph_lock(periph); 1713 1714 extget_bailout: 1715 sbuf_delete(sb); 1716 break; 1717 } 1718 case MTIOCPARAMSET: 1719 { 1720 struct mtsetlist list; 1721 struct mtparamset *ps = (struct mtparamset *)arg; 1722 1723 bzero(&list, sizeof(list)); 1724 list.num_params = 1; 1725 list.param_len = sizeof(*ps); 1726 list.params = ps; 1727 1728 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1729 break; 1730 } 1731 case MTIOCSETLIST: 1732 { 1733 struct mtsetlist *list = (struct mtsetlist *)arg; 1734 1735 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1736 break; 1737 } 1738 case MTIOCERRSTAT: 1739 { 1740 struct scsi_tape_errors *sep = 1741 &((union mterrstat *)arg)->scsi_errstat; 1742 1743 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1744 ("saioctl: MTIOCERRSTAT\n")); 1745 1746 bzero(sep, sizeof(*sep)); 1747 sep->io_resid = softc->last_io_resid; 1748 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1749 sizeof (sep->io_sense)); 1750 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1751 sizeof (sep->io_cdb)); 1752 sep->ctl_resid = softc->last_ctl_resid; 1753 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1754 sizeof (sep->ctl_sense)); 1755 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1756 sizeof (sep->ctl_cdb)); 1757 1758 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1759 didlockperiph) 1760 bzero((caddr_t) &softc->errinfo, 1761 sizeof (softc->errinfo)); 1762 error = 0; 1763 break; 1764 } 1765 case MTIOCTOP: 1766 { 1767 struct mtop *mt; 1768 int count; 1769 1770 PENDING_MOUNT_CHECK(softc, periph, dev); 1771 1772 mt = (struct mtop *)arg; 1773 1774 1775 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1776 ("saioctl: op=0x%x count=0x%x\n", 1777 mt->mt_op, mt->mt_count)); 1778 1779 count = mt->mt_count; 1780 switch (mt->mt_op) { 1781 case MTWEOF: /* write an end-of-file marker */ 1782 /* 1783 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1784 * flag because by keeping track of filemarks 1785 * we have last written we know whether or not 1786 * we need to write more when we close the device. 1787 */ 1788 error = sawritefilemarks(periph, count, FALSE, FALSE); 1789 break; 1790 case MTWEOFI: 1791 /* write an end-of-file marker without waiting */ 1792 error = sawritefilemarks(periph, count, FALSE, TRUE); 1793 break; 1794 case MTWSS: /* write a setmark */ 1795 error = sawritefilemarks(periph, count, TRUE, FALSE); 1796 break; 1797 case MTBSR: /* backward space record */ 1798 case MTFSR: /* forward space record */ 1799 case MTBSF: /* backward space file */ 1800 case MTFSF: /* forward space file */ 1801 case MTBSS: /* backward space setmark */ 1802 case MTFSS: /* forward space setmark */ 1803 case MTEOD: /* space to end of recorded medium */ 1804 { 1805 int nmarks; 1806 1807 spaceop = SS_FILEMARKS; 1808 nmarks = softc->filemarks; 1809 error = sacheckeod(periph); 1810 if (error) { 1811 xpt_print(periph->path, 1812 "EOD check prior to spacing failed\n"); 1813 softc->flags |= SA_FLAG_EIO_PENDING; 1814 break; 1815 } 1816 nmarks -= softc->filemarks; 1817 switch(mt->mt_op) { 1818 case MTBSR: 1819 count = -count; 1820 /* FALLTHROUGH */ 1821 case MTFSR: 1822 spaceop = SS_BLOCKS; 1823 break; 1824 case MTBSF: 1825 count = -count; 1826 /* FALLTHROUGH */ 1827 case MTFSF: 1828 break; 1829 case MTBSS: 1830 count = -count; 1831 /* FALLTHROUGH */ 1832 case MTFSS: 1833 spaceop = SS_SETMARKS; 1834 break; 1835 case MTEOD: 1836 spaceop = SS_EOD; 1837 count = 0; 1838 nmarks = 0; 1839 break; 1840 default: 1841 error = EINVAL; 1842 break; 1843 } 1844 if (error) 1845 break; 1846 1847 nmarks = softc->filemarks; 1848 /* 1849 * XXX: Why are we checking again? 1850 */ 1851 error = sacheckeod(periph); 1852 if (error) 1853 break; 1854 nmarks -= softc->filemarks; 1855 error = saspace(periph, count - nmarks, spaceop); 1856 /* 1857 * At this point, clear that we've written the tape 1858 * and that we've written any filemarks. We really 1859 * don't know what the applications wishes to do next- 1860 * the sacheckeod's will make sure we terminated the 1861 * tape correctly if we'd been writing, but the next 1862 * action the user application takes will set again 1863 * whether we need to write filemarks. 1864 */ 1865 softc->flags &= 1866 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1867 softc->filemarks = 0; 1868 break; 1869 } 1870 case MTREW: /* rewind */ 1871 PENDING_MOUNT_CHECK(softc, periph, dev); 1872 (void) sacheckeod(periph); 1873 error = sarewind(periph); 1874 /* see above */ 1875 softc->flags &= 1876 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1877 softc->flags &= ~SA_FLAG_ERR_PENDING; 1878 softc->filemarks = 0; 1879 break; 1880 case MTERASE: /* erase */ 1881 PENDING_MOUNT_CHECK(softc, periph, dev); 1882 error = saerase(periph, count); 1883 softc->flags &= 1884 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1885 softc->flags &= ~SA_FLAG_ERR_PENDING; 1886 break; 1887 case MTRETENS: /* re-tension tape */ 1888 PENDING_MOUNT_CHECK(softc, periph, dev); 1889 error = saretension(periph); 1890 softc->flags &= 1891 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1892 softc->flags &= ~SA_FLAG_ERR_PENDING; 1893 break; 1894 case MTOFFL: /* rewind and put the drive offline */ 1895 1896 PENDING_MOUNT_CHECK(softc, periph, dev); 1897 1898 (void) sacheckeod(periph); 1899 /* see above */ 1900 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1901 softc->filemarks = 0; 1902 1903 error = sarewind(periph); 1904 /* clear the frozen flag anyway */ 1905 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1906 1907 /* 1908 * Be sure to allow media removal before ejecting. 1909 */ 1910 1911 saprevent(periph, PR_ALLOW); 1912 if (error == 0) { 1913 error = saloadunload(periph, FALSE); 1914 if (error == 0) { 1915 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1916 } 1917 } 1918 break; 1919 1920 case MTLOAD: 1921 error = saloadunload(periph, TRUE); 1922 break; 1923 case MTNOP: /* no operation, sets status only */ 1924 case MTCACHE: /* enable controller cache */ 1925 case MTNOCACHE: /* disable controller cache */ 1926 error = 0; 1927 break; 1928 1929 case MTSETBSIZ: /* Set block size for device */ 1930 1931 PENDING_MOUNT_CHECK(softc, periph, dev); 1932 1933 if ((softc->sili != 0) 1934 && (count != 0)) { 1935 xpt_print(periph->path, "Can't enter fixed " 1936 "block mode with SILI enabled\n"); 1937 error = EINVAL; 1938 break; 1939 } 1940 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1941 0, 0, 0); 1942 if (error == 0) { 1943 softc->last_media_blksize = 1944 softc->media_blksize; 1945 softc->media_blksize = count; 1946 if (count) { 1947 softc->flags |= SA_FLAG_FIXED; 1948 if (powerof2(count)) { 1949 softc->blk_shift = 1950 ffs(count) - 1; 1951 softc->blk_mask = count - 1; 1952 } else { 1953 softc->blk_mask = ~0; 1954 softc->blk_shift = 0; 1955 } 1956 /* 1957 * Make the user's desire 'persistent'. 1958 */ 1959 softc->quirks &= ~SA_QUIRK_VARIABLE; 1960 softc->quirks |= SA_QUIRK_FIXED; 1961 } else { 1962 softc->flags &= ~SA_FLAG_FIXED; 1963 if (softc->max_blk == 0) { 1964 softc->max_blk = ~0; 1965 } 1966 softc->blk_shift = 0; 1967 if (softc->blk_gran != 0) { 1968 softc->blk_mask = 1969 softc->blk_gran - 1; 1970 } else { 1971 softc->blk_mask = 0; 1972 } 1973 /* 1974 * Make the user's desire 'persistent'. 1975 */ 1976 softc->quirks |= SA_QUIRK_VARIABLE; 1977 softc->quirks &= ~SA_QUIRK_FIXED; 1978 } 1979 } 1980 break; 1981 case MTSETDNSTY: /* Set density for device and mode */ 1982 PENDING_MOUNT_CHECK(softc, periph, dev); 1983 1984 if (count > UCHAR_MAX) { 1985 error = EINVAL; 1986 break; 1987 } else { 1988 error = sasetparams(periph, SA_PARAM_DENSITY, 1989 0, count, 0, 0); 1990 } 1991 break; 1992 case MTCOMP: /* enable compression */ 1993 PENDING_MOUNT_CHECK(softc, periph, dev); 1994 /* 1995 * Some devices don't support compression, and 1996 * don't like it if you ask them for the 1997 * compression page. 1998 */ 1999 if ((softc->quirks & SA_QUIRK_NOCOMP) || 2000 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 2001 error = ENODEV; 2002 break; 2003 } 2004 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2005 0, 0, count, SF_NO_PRINT); 2006 break; 2007 default: 2008 error = EINVAL; 2009 } 2010 break; 2011 } 2012 case MTIOCIEOT: 2013 case MTIOCEEOT: 2014 error = 0; 2015 break; 2016 case MTIOCRDSPOS: 2017 PENDING_MOUNT_CHECK(softc, periph, dev); 2018 error = sardpos(periph, 0, (u_int32_t *) arg); 2019 break; 2020 case MTIOCRDHPOS: 2021 PENDING_MOUNT_CHECK(softc, periph, dev); 2022 error = sardpos(periph, 1, (u_int32_t *) arg); 2023 break; 2024 case MTIOCSLOCATE: 2025 case MTIOCHLOCATE: { 2026 struct mtlocate locate_info; 2027 int hard; 2028 2029 bzero(&locate_info, sizeof(locate_info)); 2030 locate_info.logical_id = *((uint32_t *)arg); 2031 if (cmd == MTIOCSLOCATE) 2032 hard = 0; 2033 else 2034 hard = 1; 2035 2036 PENDING_MOUNT_CHECK(softc, periph, dev); 2037 2038 error = sasetpos(periph, hard, &locate_info); 2039 break; 2040 } 2041 case MTIOCEXTLOCATE: 2042 PENDING_MOUNT_CHECK(softc, periph, dev); 2043 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2044 softc->flags &= 2045 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2046 softc->flags &= ~SA_FLAG_ERR_PENDING; 2047 softc->filemarks = 0; 2048 break; 2049 case MTIOCGETEOTMODEL: 2050 error = 0; 2051 if (softc->quirks & SA_QUIRK_1FM) 2052 mode = 1; 2053 else 2054 mode = 2; 2055 *((u_int32_t *) arg) = mode; 2056 break; 2057 case MTIOCSETEOTMODEL: 2058 error = 0; 2059 switch (*((u_int32_t *) arg)) { 2060 case 1: 2061 softc->quirks &= ~SA_QUIRK_2FM; 2062 softc->quirks |= SA_QUIRK_1FM; 2063 break; 2064 case 2: 2065 softc->quirks &= ~SA_QUIRK_1FM; 2066 softc->quirks |= SA_QUIRK_2FM; 2067 break; 2068 default: 2069 error = EINVAL; 2070 break; 2071 } 2072 break; 2073 case MTIOCRBLIM: { 2074 struct mtrblim *rblim; 2075 2076 rblim = (struct mtrblim *)arg; 2077 2078 rblim->granularity = softc->blk_gran; 2079 rblim->min_block_length = softc->min_blk; 2080 rblim->max_block_length = softc->max_blk; 2081 break; 2082 } 2083 default: 2084 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2085 break; 2086 } 2087 2088 /* 2089 * Check to see if we cleared a frozen state 2090 */ 2091 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2092 switch(cmd) { 2093 case MTIOCRDSPOS: 2094 case MTIOCRDHPOS: 2095 case MTIOCSLOCATE: 2096 case MTIOCHLOCATE: 2097 /* 2098 * XXX KDM look at this. 2099 */ 2100 softc->fileno = (daddr_t) -1; 2101 softc->blkno = (daddr_t) -1; 2102 softc->rep_blkno = (daddr_t) -1; 2103 softc->rep_fileno = (daddr_t) -1; 2104 softc->partition = (daddr_t) -1; 2105 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2106 xpt_print(periph->path, 2107 "tape state now unfrozen.\n"); 2108 break; 2109 default: 2110 break; 2111 } 2112 } 2113 if (didlockperiph) { 2114 cam_periph_unhold(periph); 2115 } 2116 cam_periph_unlock(periph); 2117 return (error); 2118 } 2119 2120 static void 2121 sainit(void) 2122 { 2123 cam_status status; 2124 2125 /* 2126 * Install a global async callback. 2127 */ 2128 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2129 2130 if (status != CAM_REQ_CMP) { 2131 printf("sa: Failed to attach master async callback " 2132 "due to status 0x%x!\n", status); 2133 } 2134 } 2135 2136 static void 2137 sadevgonecb(void *arg) 2138 { 2139 struct cam_periph *periph; 2140 struct mtx *mtx; 2141 struct sa_softc *softc; 2142 2143 periph = (struct cam_periph *)arg; 2144 softc = (struct sa_softc *)periph->softc; 2145 2146 mtx = cam_periph_mtx(periph); 2147 mtx_lock(mtx); 2148 2149 softc->num_devs_to_destroy--; 2150 if (softc->num_devs_to_destroy == 0) { 2151 int i; 2152 2153 /* 2154 * When we have gotten all of our callbacks, we will get 2155 * no more close calls from devfs. So if we have any 2156 * dangling opens, we need to release the reference held 2157 * for that particular context. 2158 */ 2159 for (i = 0; i < softc->open_count; i++) 2160 cam_periph_release_locked(periph); 2161 2162 softc->open_count = 0; 2163 2164 /* 2165 * Release the reference held for devfs, all of our 2166 * instances are gone now. 2167 */ 2168 cam_periph_release_locked(periph); 2169 } 2170 2171 /* 2172 * We reference the lock directly here, instead of using 2173 * cam_periph_unlock(). The reason is that the final call to 2174 * cam_periph_release_locked() above could result in the periph 2175 * getting freed. If that is the case, dereferencing the periph 2176 * with a cam_periph_unlock() call would cause a page fault. 2177 */ 2178 mtx_unlock(mtx); 2179 } 2180 2181 static void 2182 saoninvalidate(struct cam_periph *periph) 2183 { 2184 struct sa_softc *softc; 2185 2186 softc = (struct sa_softc *)periph->softc; 2187 2188 /* 2189 * De-register any async callbacks. 2190 */ 2191 xpt_register_async(0, saasync, periph, periph->path); 2192 2193 softc->flags |= SA_FLAG_INVALID; 2194 2195 /* 2196 * Return all queued I/O with ENXIO. 2197 * XXX Handle any transactions queued to the card 2198 * with XPT_ABORT_CCB. 2199 */ 2200 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2201 softc->queue_count = 0; 2202 2203 /* 2204 * Tell devfs that all of our devices have gone away, and ask for a 2205 * callback when it has cleaned up its state. 2206 */ 2207 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2208 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2209 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2210 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2211 } 2212 2213 static void 2214 sacleanup(struct cam_periph *periph) 2215 { 2216 struct sa_softc *softc; 2217 2218 softc = (struct sa_softc *)periph->softc; 2219 2220 cam_periph_unlock(periph); 2221 2222 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2223 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2224 xpt_print(periph->path, "can't remove sysctl context\n"); 2225 2226 cam_periph_lock(periph); 2227 2228 devstat_remove_entry(softc->device_stats); 2229 2230 free(softc, M_SCSISA); 2231 } 2232 2233 static void 2234 saasync(void *callback_arg, u_int32_t code, 2235 struct cam_path *path, void *arg) 2236 { 2237 struct cam_periph *periph; 2238 2239 periph = (struct cam_periph *)callback_arg; 2240 switch (code) { 2241 case AC_FOUND_DEVICE: 2242 { 2243 struct ccb_getdev *cgd; 2244 cam_status status; 2245 2246 cgd = (struct ccb_getdev *)arg; 2247 if (cgd == NULL) 2248 break; 2249 2250 if (cgd->protocol != PROTO_SCSI) 2251 break; 2252 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2253 break; 2254 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2255 break; 2256 2257 /* 2258 * Allocate a peripheral instance for 2259 * this device and start the probe 2260 * process. 2261 */ 2262 status = cam_periph_alloc(saregister, saoninvalidate, 2263 sacleanup, sastart, 2264 "sa", CAM_PERIPH_BIO, path, 2265 saasync, AC_FOUND_DEVICE, cgd); 2266 2267 if (status != CAM_REQ_CMP 2268 && status != CAM_REQ_INPROG) 2269 printf("saasync: Unable to probe new device " 2270 "due to status 0x%x\n", status); 2271 break; 2272 } 2273 default: 2274 cam_periph_async(periph, code, path, arg); 2275 break; 2276 } 2277 } 2278 2279 static void 2280 sasetupdev(struct sa_softc *softc, struct cdev *dev) 2281 { 2282 2283 dev->si_iosize_max = softc->maxio; 2284 dev->si_flags |= softc->si_flags; 2285 /* 2286 * Keep a count of how many non-alias devices we have created, 2287 * so we can make sure we clean them all up on shutdown. Aliases 2288 * are cleaned up when we destroy the device they're an alias for. 2289 */ 2290 if ((dev->si_flags & SI_ALIAS) == 0) 2291 softc->num_devs_to_destroy++; 2292 } 2293 2294 static void 2295 sasysctlinit(void *context, int pending) 2296 { 2297 struct cam_periph *periph; 2298 struct sa_softc *softc; 2299 char tmpstr[32], tmpstr2[16]; 2300 2301 periph = (struct cam_periph *)context; 2302 /* 2303 * If the periph is invalid, no need to setup the sysctls. 2304 */ 2305 if (periph->flags & CAM_PERIPH_INVALID) 2306 goto bailout; 2307 2308 softc = (struct sa_softc *)periph->softc; 2309 2310 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2311 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2312 2313 sysctl_ctx_init(&softc->sysctl_ctx); 2314 softc->flags |= SA_FLAG_SCTX_INIT; 2315 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx, 2316 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2317 CTLFLAG_RD, 0, tmpstr, "device_index"); 2318 if (softc->sysctl_tree == NULL) 2319 goto bailout; 2320 2321 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2322 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2323 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2324 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2325 OID_AUTO, "maxio", CTLFLAG_RD, 2326 &softc->maxio, 0, "Maximum I/O size"); 2327 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2328 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2329 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2330 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2331 OID_AUTO, "inject_eom", CTLFLAG_RW, 2332 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2333 2334 bailout: 2335 /* 2336 * Release the reference that was held when this task was enqueued. 2337 */ 2338 cam_periph_release(periph); 2339 } 2340 2341 static cam_status 2342 saregister(struct cam_periph *periph, void *arg) 2343 { 2344 struct sa_softc *softc; 2345 struct ccb_getdev *cgd; 2346 struct ccb_pathinq cpi; 2347 struct make_dev_args args; 2348 caddr_t match; 2349 char tmpstr[80]; 2350 int error; 2351 2352 cgd = (struct ccb_getdev *)arg; 2353 if (cgd == NULL) { 2354 printf("saregister: no getdev CCB, can't register device\n"); 2355 return (CAM_REQ_CMP_ERR); 2356 } 2357 2358 softc = (struct sa_softc *) 2359 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2360 if (softc == NULL) { 2361 printf("saregister: Unable to probe new device. " 2362 "Unable to allocate softc\n"); 2363 return (CAM_REQ_CMP_ERR); 2364 } 2365 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2366 softc->state = SA_STATE_NORMAL; 2367 softc->fileno = (daddr_t) -1; 2368 softc->blkno = (daddr_t) -1; 2369 softc->rep_fileno = (daddr_t) -1; 2370 softc->rep_blkno = (daddr_t) -1; 2371 softc->partition = (daddr_t) -1; 2372 softc->bop = -1; 2373 softc->eop = -1; 2374 softc->bpew = -1; 2375 2376 bioq_init(&softc->bio_queue); 2377 softc->periph = periph; 2378 periph->softc = softc; 2379 2380 /* 2381 * See if this device has any quirks. 2382 */ 2383 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2384 (caddr_t)sa_quirk_table, 2385 nitems(sa_quirk_table), 2386 sizeof(*sa_quirk_table), scsi_inquiry_match); 2387 2388 if (match != NULL) { 2389 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2390 softc->last_media_blksize = 2391 ((struct sa_quirk_entry *)match)->prefblk; 2392 } else 2393 softc->quirks = SA_QUIRK_NONE; 2394 2395 /* 2396 * Long format data for READ POSITION was introduced in SSC, which 2397 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2398 * reports that it is SCSI-2 or older, it is unlikely to support 2399 * long position data, but it might. Some drives from that era 2400 * claim to be SCSI-2, but do support long position information. 2401 * So, instead of immediately disabling long position information 2402 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2403 * then disable long position information if we get an error. 2404 */ 2405 if (cgd->inq_data.version <= SCSI_REV_CCS) 2406 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2407 2408 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2409 struct ccb_dev_advinfo cdai; 2410 struct scsi_vpd_extended_inquiry_data ext_inq; 2411 2412 bzero(&ext_inq, sizeof(ext_inq)); 2413 2414 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2415 2416 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2417 cdai.flags = CDAI_FLAG_NONE; 2418 cdai.buftype = CDAI_TYPE_EXT_INQ; 2419 cdai.bufsiz = sizeof(ext_inq); 2420 cdai.buf = (uint8_t *)&ext_inq; 2421 xpt_action((union ccb *)&cdai); 2422 2423 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2424 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2425 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2426 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2427 softc->flags |= SA_FLAG_PROTECT_SUPP; 2428 } 2429 2430 xpt_path_inq(&cpi, periph->path); 2431 2432 /* 2433 * The SA driver supports a blocksize, but we don't know the 2434 * blocksize until we media is inserted. So, set a flag to 2435 * indicate that the blocksize is unavailable right now. 2436 */ 2437 cam_periph_unlock(periph); 2438 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2439 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2440 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2441 2442 /* 2443 * Load the default value that is either compiled in, or loaded 2444 * in the global kern.cam.sa.allow_io_split tunable. 2445 */ 2446 softc->allow_io_split = sa_allow_io_split; 2447 2448 /* 2449 * Load a per-instance tunable, if it exists. NOTE that this 2450 * tunable WILL GO AWAY in FreeBSD 11.0. 2451 */ 2452 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2453 periph->unit_number); 2454 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2455 2456 /* 2457 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2458 * the smaller of cpi.maxio or MAXPHYS. 2459 */ 2460 if (cpi.maxio == 0) 2461 softc->maxio = DFLTPHYS; 2462 else if (cpi.maxio > MAXPHYS) 2463 softc->maxio = MAXPHYS; 2464 else 2465 softc->maxio = cpi.maxio; 2466 2467 /* 2468 * Record the controller's maximum I/O size so we can report it to 2469 * the user later. 2470 */ 2471 softc->cpi_maxio = cpi.maxio; 2472 2473 /* 2474 * By default we tell physio that we do not want our I/O split. 2475 * The user needs to have a 1:1 mapping between the size of his 2476 * write to a tape character device and the size of the write 2477 * that actually goes down to the drive. 2478 */ 2479 if (softc->allow_io_split == 0) 2480 softc->si_flags = SI_NOSPLIT; 2481 else 2482 softc->si_flags = 0; 2483 2484 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2485 2486 /* 2487 * If the SIM supports unmapped I/O, let physio know that we can 2488 * handle unmapped buffers. 2489 */ 2490 if (cpi.hba_misc & PIM_UNMAPPED) 2491 softc->si_flags |= SI_UNMAPPED; 2492 2493 /* 2494 * Acquire a reference to the periph before we create the devfs 2495 * instances for it. We'll release this reference once the devfs 2496 * instances have been freed. 2497 */ 2498 if (cam_periph_acquire(periph) != 0) { 2499 xpt_print(periph->path, "%s: lost periph during " 2500 "registration!\n", __func__); 2501 cam_periph_lock(periph); 2502 return (CAM_REQ_CMP_ERR); 2503 } 2504 2505 make_dev_args_init(&args); 2506 args.mda_devsw = &sa_cdevsw; 2507 args.mda_si_drv1 = softc->periph; 2508 args.mda_uid = UID_ROOT; 2509 args.mda_gid = GID_OPERATOR; 2510 args.mda_mode = 0660; 2511 2512 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2513 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2514 periph->periph_name, periph->unit_number); 2515 if (error != 0) { 2516 cam_periph_lock(periph); 2517 return (CAM_REQ_CMP_ERR); 2518 } 2519 sasetupdev(softc, softc->devs.ctl_dev); 2520 2521 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2522 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2523 periph->periph_name, periph->unit_number); 2524 if (error != 0) { 2525 cam_periph_lock(periph); 2526 return (CAM_REQ_CMP_ERR); 2527 } 2528 sasetupdev(softc, softc->devs.r_dev); 2529 2530 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2531 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2532 periph->periph_name, periph->unit_number); 2533 if (error != 0) { 2534 cam_periph_lock(periph); 2535 return (CAM_REQ_CMP_ERR); 2536 } 2537 sasetupdev(softc, softc->devs.nr_dev); 2538 2539 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2540 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2541 periph->periph_name, periph->unit_number); 2542 if (error != 0) { 2543 cam_periph_lock(periph); 2544 return (CAM_REQ_CMP_ERR); 2545 } 2546 sasetupdev(softc, softc->devs.er_dev); 2547 2548 cam_periph_lock(periph); 2549 2550 softc->density_type_bits[0] = 0; 2551 softc->density_type_bits[1] = SRDS_MEDIA; 2552 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2553 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2554 /* 2555 * Bump the peripheral refcount for the sysctl thread, in case we 2556 * get invalidated before the thread has a chance to run. 2557 */ 2558 cam_periph_acquire(periph); 2559 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2560 2561 /* 2562 * Add an async callback so that we get 2563 * notified if this device goes away. 2564 */ 2565 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2566 2567 xpt_announce_periph(periph, NULL); 2568 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2569 2570 return (CAM_REQ_CMP); 2571 } 2572 2573 static void 2574 sastart(struct cam_periph *periph, union ccb *start_ccb) 2575 { 2576 struct sa_softc *softc; 2577 2578 softc = (struct sa_softc *)periph->softc; 2579 2580 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2581 2582 2583 switch (softc->state) { 2584 case SA_STATE_NORMAL: 2585 { 2586 /* Pull a buffer from the queue and get going on it */ 2587 struct bio *bp; 2588 2589 /* 2590 * See if there is a buf with work for us to do.. 2591 */ 2592 bp = bioq_first(&softc->bio_queue); 2593 if (bp == NULL) { 2594 xpt_release_ccb(start_ccb); 2595 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2596 || (softc->inject_eom != 0)) { 2597 struct bio *done_bp; 2598 2599 if (softc->inject_eom != 0) { 2600 softc->flags |= SA_FLAG_EOM_PENDING; 2601 softc->inject_eom = 0; 2602 /* 2603 * If we're injecting EOM for writes, we 2604 * need to keep PEWS set for 3 queries 2605 * to cover 2 position requests from the 2606 * kernel via sagetpos(), and then allow 2607 * for one for the user to see the BPEW 2608 * flag (e.g. via mt status). After that, 2609 * it will be cleared. 2610 */ 2611 if (bp->bio_cmd == BIO_WRITE) 2612 softc->set_pews_status = 3; 2613 else 2614 softc->set_pews_status = 1; 2615 } 2616 again: 2617 softc->queue_count--; 2618 bioq_remove(&softc->bio_queue, bp); 2619 bp->bio_resid = bp->bio_bcount; 2620 done_bp = bp; 2621 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2622 /* 2623 * We have two different behaviors for 2624 * writes when we hit either Early Warning 2625 * or the PEWZ (Programmable Early Warning 2626 * Zone). The default behavior is that 2627 * for all writes that are currently 2628 * queued after the write where we saw the 2629 * early warning, we will return the write 2630 * with the residual equal to the count. 2631 * i.e. tell the application that 0 bytes 2632 * were written. 2633 * 2634 * The alternate behavior, which is enabled 2635 * when eot_warn is set, is that in 2636 * addition to setting the residual equal 2637 * to the count, we will set the error 2638 * to ENOSPC. 2639 * 2640 * In either case, once queued writes are 2641 * cleared out, we clear the error flag 2642 * (see below) and the application is free to 2643 * attempt to write more. 2644 */ 2645 if (softc->eot_warn != 0) { 2646 bp->bio_flags |= BIO_ERROR; 2647 bp->bio_error = ENOSPC; 2648 } else 2649 bp->bio_error = 0; 2650 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2651 /* 2652 * This can only happen if we're reading 2653 * in fixed length mode. In this case, 2654 * we dump the rest of the list the 2655 * same way. 2656 */ 2657 bp->bio_error = 0; 2658 if (bioq_first(&softc->bio_queue) != NULL) { 2659 biodone(done_bp); 2660 goto again; 2661 } 2662 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2663 bp->bio_error = EIO; 2664 bp->bio_flags |= BIO_ERROR; 2665 } 2666 bp = bioq_first(&softc->bio_queue); 2667 /* 2668 * Only if we have no other buffers queued up 2669 * do we clear the pending error flag. 2670 */ 2671 if (bp == NULL) 2672 softc->flags &= ~SA_FLAG_ERR_PENDING; 2673 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2674 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2675 "%d more buffers queued up\n", 2676 (softc->flags & SA_FLAG_ERR_PENDING), 2677 (bp != NULL)? "not " : " ", softc->queue_count)); 2678 xpt_release_ccb(start_ccb); 2679 biodone(done_bp); 2680 } else { 2681 u_int32_t length; 2682 2683 bioq_remove(&softc->bio_queue, bp); 2684 softc->queue_count--; 2685 2686 if ((bp->bio_cmd != BIO_READ) && 2687 (bp->bio_cmd != BIO_WRITE)) { 2688 biofinish(bp, NULL, EOPNOTSUPP); 2689 xpt_release_ccb(start_ccb); 2690 return; 2691 } 2692 length = bp->bio_bcount; 2693 2694 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2695 if (softc->blk_shift != 0) { 2696 length = length >> softc->blk_shift; 2697 } else if (softc->media_blksize != 0) { 2698 length = length / softc->media_blksize; 2699 } else { 2700 bp->bio_error = EIO; 2701 xpt_print(periph->path, "zero blocksize" 2702 " for FIXED length writes?\n"); 2703 biodone(bp); 2704 break; 2705 } 2706 #if 0 2707 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2708 ("issuing a %d fixed record %s\n", 2709 length, (bp->bio_cmd == BIO_READ)? "read" : 2710 "write")); 2711 #endif 2712 } else { 2713 #if 0 2714 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2715 ("issuing a %d variable byte %s\n", 2716 length, (bp->bio_cmd == BIO_READ)? "read" : 2717 "write")); 2718 #endif 2719 } 2720 devstat_start_transaction_bio(softc->device_stats, bp); 2721 /* 2722 * Some people have theorized that we should 2723 * suppress illegal length indication if we are 2724 * running in variable block mode so that we don't 2725 * have to request sense every time our requested 2726 * block size is larger than the written block. 2727 * The residual information from the ccb allows 2728 * us to identify this situation anyway. The only 2729 * problem with this is that we will not get 2730 * information about blocks that are larger than 2731 * our read buffer unless we set the block size 2732 * in the mode page to something other than 0. 2733 * 2734 * I believe that this is a non-issue. If user apps 2735 * don't adjust their read size to match our record 2736 * size, that's just life. Anyway, the typical usage 2737 * would be to issue, e.g., 64KB reads and occasionally 2738 * have to do deal with 512 byte or 1KB intermediate 2739 * records. 2740 * 2741 * That said, though, we now support setting the 2742 * SILI bit on reads, and we set the blocksize to 4 2743 * bytes when we do that. This gives us 2744 * compatibility with software that wants this, 2745 * although the only real difference between that 2746 * and not setting the SILI bit on reads is that we 2747 * won't get a check condition on reads where our 2748 * request size is larger than the block on tape. 2749 * That probably only makes a real difference in 2750 * non-packetized SCSI, where you have to go back 2751 * to the drive to request sense and thus incur 2752 * more latency. 2753 */ 2754 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2755 MTIO_DSREG_RD : MTIO_DSREG_WR; 2756 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2757 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2758 SCSI_RW_READ : SCSI_RW_WRITE) | 2759 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2760 SCSI_RW_BIO : 0), softc->sili, 2761 (softc->flags & SA_FLAG_FIXED) != 0, length, 2762 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2763 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2764 IO_TIMEOUT); 2765 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2766 start_ccb->ccb_h.ccb_bp = bp; 2767 bp = bioq_first(&softc->bio_queue); 2768 xpt_action(start_ccb); 2769 } 2770 2771 if (bp != NULL) { 2772 /* Have more work to do, so ensure we stay scheduled */ 2773 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2774 } 2775 break; 2776 } 2777 case SA_STATE_ABNORMAL: 2778 default: 2779 panic("state 0x%x in sastart", softc->state); 2780 break; 2781 } 2782 } 2783 2784 2785 static void 2786 sadone(struct cam_periph *periph, union ccb *done_ccb) 2787 { 2788 struct sa_softc *softc; 2789 struct ccb_scsiio *csio; 2790 struct bio *bp; 2791 int error; 2792 2793 softc = (struct sa_softc *)periph->softc; 2794 csio = &done_ccb->csio; 2795 2796 softc->dsreg = MTIO_DSREG_REST; 2797 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2798 error = 0; 2799 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2800 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2801 /* 2802 * A retry was scheduled, so just return. 2803 */ 2804 return; 2805 } 2806 } 2807 2808 if (error == EIO) { 2809 2810 /* 2811 * Catastrophic error. Mark the tape as frozen 2812 * (we no longer know tape position). 2813 * 2814 * Return all queued I/O with EIO, and unfreeze 2815 * our queue so that future transactions that 2816 * attempt to fix this problem can get to the 2817 * device. 2818 * 2819 */ 2820 2821 softc->flags |= SA_FLAG_TAPE_FROZEN; 2822 bioq_flush(&softc->bio_queue, NULL, EIO); 2823 } 2824 if (error != 0) { 2825 bp->bio_resid = bp->bio_bcount; 2826 bp->bio_error = error; 2827 bp->bio_flags |= BIO_ERROR; 2828 /* 2829 * In the error case, position is updated in saerror. 2830 */ 2831 } else { 2832 bp->bio_resid = csio->resid; 2833 bp->bio_error = 0; 2834 if (csio->resid != 0) { 2835 bp->bio_flags |= BIO_ERROR; 2836 } 2837 if (bp->bio_cmd == BIO_WRITE) { 2838 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2839 softc->filemarks = 0; 2840 } 2841 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2842 (softc->blkno != (daddr_t) -1)) { 2843 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2844 u_int32_t l; 2845 if (softc->blk_shift != 0) { 2846 l = bp->bio_bcount >> 2847 softc->blk_shift; 2848 } else { 2849 l = bp->bio_bcount / 2850 softc->media_blksize; 2851 } 2852 softc->blkno += (daddr_t) l; 2853 } else { 2854 softc->blkno++; 2855 } 2856 } 2857 } 2858 /* 2859 * If we had an error (immediate or pending), 2860 * release the device queue now. 2861 */ 2862 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2863 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2864 if (error || bp->bio_resid) { 2865 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2866 ("error %d resid %ld count %ld\n", error, 2867 bp->bio_resid, bp->bio_bcount)); 2868 } 2869 biofinish(bp, softc->device_stats, 0); 2870 xpt_release_ccb(done_ccb); 2871 } 2872 2873 /* 2874 * Mount the tape (make sure it's ready for I/O). 2875 */ 2876 static int 2877 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2878 { 2879 struct sa_softc *softc; 2880 union ccb *ccb; 2881 int error; 2882 2883 /* 2884 * oflags can be checked for 'kind' of open (read-only check) - later 2885 * dev can be checked for a control-mode or compression open - later 2886 */ 2887 UNUSED_PARAMETER(oflags); 2888 UNUSED_PARAMETER(dev); 2889 2890 2891 softc = (struct sa_softc *)periph->softc; 2892 2893 /* 2894 * This should determine if something has happened since the last 2895 * open/mount that would invalidate the mount. We do *not* want 2896 * to retry this command- we just want the status. But we only 2897 * do this if we're mounted already- if we're not mounted, 2898 * we don't care about the unit read state and can instead use 2899 * this opportunity to attempt to reserve the tape unit. 2900 */ 2901 2902 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2903 ccb = cam_periph_getccb(periph, 1); 2904 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2905 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2906 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2907 softc->device_stats); 2908 if (error == ENXIO) { 2909 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2910 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2911 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2912 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2913 softc->device_stats); 2914 } else if (error) { 2915 /* 2916 * We don't need to freeze the tape because we 2917 * will now attempt to rewind/load it. 2918 */ 2919 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2920 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2921 xpt_print(periph->path, 2922 "error %d on TUR in samount\n", error); 2923 } 2924 } 2925 } else { 2926 error = sareservereleaseunit(periph, TRUE); 2927 if (error) { 2928 return (error); 2929 } 2930 ccb = cam_periph_getccb(periph, 1); 2931 scsi_test_unit_ready(&ccb->csio, 0, NULL, 2932 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2933 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2934 softc->device_stats); 2935 } 2936 2937 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2938 struct scsi_read_block_limits_data *rblim = NULL; 2939 int comp_enabled, comp_supported; 2940 u_int8_t write_protect, guessing = 0; 2941 2942 /* 2943 * Clear out old state. 2944 */ 2945 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2946 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2947 softc->filemarks = 0; 2948 2949 /* 2950 * *Very* first off, make sure we're loaded to BOT. 2951 */ 2952 scsi_load_unload(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 2953 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2954 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2955 softc->device_stats); 2956 2957 /* 2958 * In case this doesn't work, do a REWIND instead 2959 */ 2960 if (error) { 2961 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 2962 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2963 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2964 softc->device_stats); 2965 } 2966 if (error) { 2967 xpt_release_ccb(ccb); 2968 goto exit; 2969 } 2970 2971 /* 2972 * Do a dummy test read to force access to the 2973 * media so that the drive will really know what's 2974 * there. We actually don't really care what the 2975 * blocksize on tape is and don't expect to really 2976 * read a full record. 2977 */ 2978 rblim = (struct scsi_read_block_limits_data *) 2979 malloc(8192, M_SCSISA, M_NOWAIT); 2980 if (rblim == NULL) { 2981 xpt_print(periph->path, "no memory for test read\n"); 2982 xpt_release_ccb(ccb); 2983 error = ENOMEM; 2984 goto exit; 2985 } 2986 2987 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2988 scsi_sa_read_write(&ccb->csio, 0, NULL, 2989 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2990 (void *) rblim, 8192, SSD_FULL_SIZE, 2991 IO_TIMEOUT); 2992 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2993 softc->device_stats); 2994 scsi_rewind(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 2995 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2996 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2997 SF_NO_PRINT | SF_RETRY_UA, 2998 softc->device_stats); 2999 if (error) { 3000 xpt_print(periph->path, 3001 "unable to rewind after test read\n"); 3002 xpt_release_ccb(ccb); 3003 goto exit; 3004 } 3005 } 3006 3007 /* 3008 * Next off, determine block limits. 3009 */ 3010 scsi_read_block_limits(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 3011 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3012 3013 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3014 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3015 3016 xpt_release_ccb(ccb); 3017 3018 if (error != 0) { 3019 /* 3020 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3021 * a MANDATORY command. Anyway- it doesn't matter- 3022 * we can proceed anyway. 3023 */ 3024 softc->blk_gran = 0; 3025 softc->max_blk = ~0; 3026 softc->min_blk = 0; 3027 } else { 3028 if (softc->scsi_rev >= SCSI_REV_SPC) { 3029 softc->blk_gran = RBL_GRAN(rblim); 3030 } else { 3031 softc->blk_gran = 0; 3032 } 3033 /* 3034 * We take max_blk == min_blk to mean a default to 3035 * fixed mode- but note that whatever we get out of 3036 * sagetparams below will actually determine whether 3037 * we are actually *in* fixed mode. 3038 */ 3039 softc->max_blk = scsi_3btoul(rblim->maximum); 3040 softc->min_blk = scsi_2btoul(rblim->minimum); 3041 3042 3043 } 3044 /* 3045 * Next, perform a mode sense to determine 3046 * current density, blocksize, compression etc. 3047 */ 3048 error = sagetparams(periph, SA_PARAM_ALL, 3049 &softc->media_blksize, 3050 &softc->media_density, 3051 &softc->media_numblks, 3052 &softc->buffer_mode, &write_protect, 3053 &softc->speed, &comp_supported, 3054 &comp_enabled, &softc->comp_algorithm, 3055 NULL, NULL, 0, 0); 3056 3057 if (error != 0) { 3058 /* 3059 * We could work a little harder here. We could 3060 * adjust our attempts to get information. It 3061 * might be an ancient tape drive. If someone 3062 * nudges us, we'll do that. 3063 */ 3064 goto exit; 3065 } 3066 3067 /* 3068 * If no quirk has determined that this is a device that is 3069 * preferred to be in fixed or variable mode, now is the time 3070 * to find out. 3071 */ 3072 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3073 guessing = 1; 3074 /* 3075 * This could be expensive to find out. Luckily we 3076 * only need to do this once. If we start out in 3077 * 'default' mode, try and set ourselves to one 3078 * of the densities that would determine a wad 3079 * of other stuff. Go from highest to lowest. 3080 */ 3081 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3082 int i; 3083 static u_int8_t ctry[] = { 3084 SCSI_DENSITY_HALFINCH_PE, 3085 SCSI_DENSITY_HALFINCH_6250C, 3086 SCSI_DENSITY_HALFINCH_6250, 3087 SCSI_DENSITY_HALFINCH_1600, 3088 SCSI_DENSITY_HALFINCH_800, 3089 SCSI_DENSITY_QIC_4GB, 3090 SCSI_DENSITY_QIC_2GB, 3091 SCSI_DENSITY_QIC_525_320, 3092 SCSI_DENSITY_QIC_150, 3093 SCSI_DENSITY_QIC_120, 3094 SCSI_DENSITY_QIC_24, 3095 SCSI_DENSITY_QIC_11_9TRK, 3096 SCSI_DENSITY_QIC_11_4TRK, 3097 SCSI_DENSITY_QIC_1320, 3098 SCSI_DENSITY_QIC_3080, 3099 0 3100 }; 3101 for (i = 0; ctry[i]; i++) { 3102 error = sasetparams(periph, 3103 SA_PARAM_DENSITY, 0, ctry[i], 3104 0, SF_NO_PRINT); 3105 if (error == 0) { 3106 softc->media_density = ctry[i]; 3107 break; 3108 } 3109 } 3110 } 3111 switch (softc->media_density) { 3112 case SCSI_DENSITY_QIC_11_4TRK: 3113 case SCSI_DENSITY_QIC_11_9TRK: 3114 case SCSI_DENSITY_QIC_24: 3115 case SCSI_DENSITY_QIC_120: 3116 case SCSI_DENSITY_QIC_150: 3117 case SCSI_DENSITY_QIC_525_320: 3118 case SCSI_DENSITY_QIC_1320: 3119 case SCSI_DENSITY_QIC_3080: 3120 softc->quirks &= ~SA_QUIRK_2FM; 3121 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3122 softc->last_media_blksize = 512; 3123 break; 3124 case SCSI_DENSITY_QIC_4GB: 3125 case SCSI_DENSITY_QIC_2GB: 3126 softc->quirks &= ~SA_QUIRK_2FM; 3127 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3128 softc->last_media_blksize = 1024; 3129 break; 3130 default: 3131 softc->last_media_blksize = 3132 softc->media_blksize; 3133 softc->quirks |= SA_QUIRK_VARIABLE; 3134 break; 3135 } 3136 } 3137 3138 /* 3139 * If no quirk has determined that this is a device that needs 3140 * to have 2 Filemarks at EOD, now is the time to find out. 3141 */ 3142 3143 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3144 switch (softc->media_density) { 3145 case SCSI_DENSITY_HALFINCH_800: 3146 case SCSI_DENSITY_HALFINCH_1600: 3147 case SCSI_DENSITY_HALFINCH_6250: 3148 case SCSI_DENSITY_HALFINCH_6250C: 3149 case SCSI_DENSITY_HALFINCH_PE: 3150 softc->quirks &= ~SA_QUIRK_1FM; 3151 softc->quirks |= SA_QUIRK_2FM; 3152 break; 3153 default: 3154 break; 3155 } 3156 } 3157 3158 /* 3159 * Now validate that some info we got makes sense. 3160 */ 3161 if ((softc->max_blk < softc->media_blksize) || 3162 (softc->min_blk > softc->media_blksize && 3163 softc->media_blksize)) { 3164 xpt_print(periph->path, 3165 "BLOCK LIMITS (%d..%d) could not match current " 3166 "block settings (%d)- adjusting\n", softc->min_blk, 3167 softc->max_blk, softc->media_blksize); 3168 softc->max_blk = softc->min_blk = 3169 softc->media_blksize; 3170 } 3171 3172 /* 3173 * Now put ourselves into the right frame of mind based 3174 * upon quirks... 3175 */ 3176 tryagain: 3177 /* 3178 * If we want to be in FIXED mode and our current blocksize 3179 * is not equal to our last blocksize (if nonzero), try and 3180 * set ourselves to this last blocksize (as the 'preferred' 3181 * block size). The initial quirkmatch at registry sets the 3182 * initial 'last' blocksize. If, for whatever reason, this 3183 * 'last' blocksize is zero, set the blocksize to 512, 3184 * or min_blk if that's larger. 3185 */ 3186 if ((softc->quirks & SA_QUIRK_FIXED) && 3187 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3188 (softc->media_blksize != softc->last_media_blksize)) { 3189 softc->media_blksize = softc->last_media_blksize; 3190 if (softc->media_blksize == 0) { 3191 softc->media_blksize = 512; 3192 if (softc->media_blksize < softc->min_blk) { 3193 softc->media_blksize = softc->min_blk; 3194 } 3195 } 3196 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3197 softc->media_blksize, 0, 0, SF_NO_PRINT); 3198 if (error) { 3199 xpt_print(periph->path, 3200 "unable to set fixed blocksize to %d\n", 3201 softc->media_blksize); 3202 goto exit; 3203 } 3204 } 3205 3206 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3207 (softc->media_blksize != 0)) { 3208 softc->last_media_blksize = softc->media_blksize; 3209 softc->media_blksize = 0; 3210 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3211 0, 0, 0, SF_NO_PRINT); 3212 if (error) { 3213 /* 3214 * If this fails and we were guessing, just 3215 * assume that we got it wrong and go try 3216 * fixed block mode. Don't even check against 3217 * density code at this point. 3218 */ 3219 if (guessing) { 3220 softc->quirks &= ~SA_QUIRK_VARIABLE; 3221 softc->quirks |= SA_QUIRK_FIXED; 3222 if (softc->last_media_blksize == 0) 3223 softc->last_media_blksize = 512; 3224 goto tryagain; 3225 } 3226 xpt_print(periph->path, 3227 "unable to set variable blocksize\n"); 3228 goto exit; 3229 } 3230 } 3231 3232 /* 3233 * Now that we have the current block size, 3234 * set up some parameters for sastart's usage. 3235 */ 3236 if (softc->media_blksize) { 3237 softc->flags |= SA_FLAG_FIXED; 3238 if (powerof2(softc->media_blksize)) { 3239 softc->blk_shift = 3240 ffs(softc->media_blksize) - 1; 3241 softc->blk_mask = softc->media_blksize - 1; 3242 } else { 3243 softc->blk_mask = ~0; 3244 softc->blk_shift = 0; 3245 } 3246 } else { 3247 /* 3248 * The SCSI-3 spec allows 0 to mean "unspecified". 3249 * The SCSI-1 spec allows 0 to mean 'infinite'. 3250 * 3251 * Either works here. 3252 */ 3253 if (softc->max_blk == 0) { 3254 softc->max_blk = ~0; 3255 } 3256 softc->blk_shift = 0; 3257 if (softc->blk_gran != 0) { 3258 softc->blk_mask = softc->blk_gran - 1; 3259 } else { 3260 softc->blk_mask = 0; 3261 } 3262 } 3263 3264 if (write_protect) 3265 softc->flags |= SA_FLAG_TAPE_WP; 3266 3267 if (comp_supported) { 3268 if (softc->saved_comp_algorithm == 0) 3269 softc->saved_comp_algorithm = 3270 softc->comp_algorithm; 3271 softc->flags |= SA_FLAG_COMP_SUPP; 3272 if (comp_enabled) 3273 softc->flags |= SA_FLAG_COMP_ENABLED; 3274 } else 3275 softc->flags |= SA_FLAG_COMP_UNSUPP; 3276 3277 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3278 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3279 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3280 0, 0, SF_NO_PRINT); 3281 if (error == 0) { 3282 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3283 } else { 3284 xpt_print(periph->path, 3285 "unable to set buffered mode\n"); 3286 } 3287 error = 0; /* not an error */ 3288 } 3289 3290 3291 if (error == 0) { 3292 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3293 } 3294 exit: 3295 if (rblim != NULL) 3296 free(rblim, M_SCSISA); 3297 3298 if (error != 0) { 3299 softc->dsreg = MTIO_DSREG_NIL; 3300 } else { 3301 softc->fileno = softc->blkno = 0; 3302 softc->rep_fileno = softc->rep_blkno = -1; 3303 softc->partition = 0; 3304 softc->dsreg = MTIO_DSREG_REST; 3305 } 3306 #ifdef SA_1FM_AT_EOD 3307 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3308 softc->quirks |= SA_QUIRK_1FM; 3309 #else 3310 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3311 softc->quirks |= SA_QUIRK_2FM; 3312 #endif 3313 } else 3314 xpt_release_ccb(ccb); 3315 3316 /* 3317 * If we return an error, we're not mounted any more, 3318 * so release any device reservation. 3319 */ 3320 if (error != 0) { 3321 (void) sareservereleaseunit(periph, FALSE); 3322 } else { 3323 /* 3324 * Clear I/O residual. 3325 */ 3326 softc->last_io_resid = 0; 3327 softc->last_ctl_resid = 0; 3328 } 3329 return (error); 3330 } 3331 3332 /* 3333 * How many filemarks do we need to write if we were to terminate the 3334 * tape session right now? Note that this can be a negative number 3335 */ 3336 3337 static int 3338 samarkswanted(struct cam_periph *periph) 3339 { 3340 int markswanted; 3341 struct sa_softc *softc; 3342 3343 softc = (struct sa_softc *)periph->softc; 3344 markswanted = 0; 3345 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3346 markswanted++; 3347 if (softc->quirks & SA_QUIRK_2FM) 3348 markswanted++; 3349 } 3350 markswanted -= softc->filemarks; 3351 return (markswanted); 3352 } 3353 3354 static int 3355 sacheckeod(struct cam_periph *periph) 3356 { 3357 int error; 3358 int markswanted; 3359 3360 markswanted = samarkswanted(periph); 3361 3362 if (markswanted > 0) { 3363 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3364 } else { 3365 error = 0; 3366 } 3367 return (error); 3368 } 3369 3370 static int 3371 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3372 { 3373 static const char *toobig = 3374 "%d-byte tape record bigger than supplied buffer\n"; 3375 struct cam_periph *periph; 3376 struct sa_softc *softc; 3377 struct ccb_scsiio *csio; 3378 struct scsi_sense_data *sense; 3379 uint64_t resid = 0; 3380 int64_t info = 0; 3381 cam_status status; 3382 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3383 int sense_len; 3384 uint8_t stream_bits; 3385 3386 periph = xpt_path_periph(ccb->ccb_h.path); 3387 softc = (struct sa_softc *)periph->softc; 3388 csio = &ccb->csio; 3389 sense = &csio->sense_data; 3390 sense_len = csio->sense_len - csio->sense_resid; 3391 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3392 &asc, &ascq, /*show_errors*/ 1); 3393 if (asc != -1 && ascq != -1) 3394 aqvalid = 1; 3395 else 3396 aqvalid = 0; 3397 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3398 stream_valid = 1; 3399 else 3400 stream_valid = 0; 3401 error = 0; 3402 3403 status = csio->ccb_h.status & CAM_STATUS_MASK; 3404 3405 /* 3406 * Calculate/latch up, any residuals... We do this in a funny 2-step 3407 * so we can print stuff here if we have CAM_DEBUG enabled for this 3408 * unit. 3409 */ 3410 if (status == CAM_SCSI_STATUS_ERROR) { 3411 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3412 &info) == 0) { 3413 if ((softc->flags & SA_FLAG_FIXED) != 0) 3414 resid *= softc->media_blksize; 3415 } else { 3416 resid = csio->dxfer_len; 3417 info = resid; 3418 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3419 if (softc->media_blksize) 3420 info /= softc->media_blksize; 3421 } 3422 } 3423 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3424 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3425 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3426 sizeof (struct scsi_sense_data)); 3427 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3428 (int) csio->cdb_len); 3429 softc->last_io_resid = resid; 3430 softc->last_resid_was_io = 1; 3431 } else { 3432 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3433 sizeof (struct scsi_sense_data)); 3434 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3435 (int) csio->cdb_len); 3436 softc->last_ctl_resid = resid; 3437 softc->last_resid_was_io = 0; 3438 } 3439 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3440 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3441 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3442 sense_key, asc, ascq, status, 3443 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3444 csio->dxfer_len)); 3445 } else { 3446 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3447 ("Cam Status 0x%x\n", status)); 3448 } 3449 3450 switch (status) { 3451 case CAM_REQ_CMP: 3452 return (0); 3453 case CAM_SCSI_STATUS_ERROR: 3454 /* 3455 * If a read/write command, we handle it here. 3456 */ 3457 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3458 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3459 break; 3460 } 3461 /* 3462 * If this was just EOM/EOP, Filemark, Setmark, ILI or 3463 * PEW detected on a non read/write command, we assume 3464 * it's not an error and propagate the residual and return. 3465 */ 3466 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5) 3467 || (ascq == 0x07))) 3468 || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3469 csio->resid = resid; 3470 QFRLS(ccb); 3471 return (0); 3472 } 3473 /* 3474 * Otherwise, we let the common code handle this. 3475 */ 3476 return (cam_periph_error(ccb, cflgs, sflgs)); 3477 3478 /* 3479 * XXX: To Be Fixed 3480 * We cannot depend upon CAM honoring retry counts for these. 3481 */ 3482 case CAM_SCSI_BUS_RESET: 3483 case CAM_BDR_SENT: 3484 if (ccb->ccb_h.retry_count <= 0) { 3485 return (EIO); 3486 } 3487 /* FALLTHROUGH */ 3488 default: 3489 return (cam_periph_error(ccb, cflgs, sflgs)); 3490 } 3491 3492 /* 3493 * Handle filemark, end of tape, mismatched record sizes.... 3494 * From this point out, we're only handling read/write cases. 3495 * Handle writes && reads differently. 3496 */ 3497 3498 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3499 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3500 csio->resid = resid; 3501 error = ENOSPC; 3502 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3503 softc->flags |= SA_FLAG_EOM_PENDING; 3504 /* 3505 * Grotesque as it seems, the few times 3506 * I've actually seen a non-zero resid, 3507 * the tape drive actually lied and had 3508 * written all the data!. 3509 */ 3510 csio->resid = 0; 3511 } 3512 } else { 3513 csio->resid = resid; 3514 if (sense_key == SSD_KEY_BLANK_CHECK) { 3515 if (softc->quirks & SA_QUIRK_1FM) { 3516 error = 0; 3517 softc->flags |= SA_FLAG_EOM_PENDING; 3518 } else { 3519 error = EIO; 3520 } 3521 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3522 if (softc->flags & SA_FLAG_FIXED) { 3523 error = -1; 3524 softc->flags |= SA_FLAG_EOF_PENDING; 3525 } 3526 /* 3527 * Unconditionally, if we detected a filemark on a read, 3528 * mark that we've run moved a file ahead. 3529 */ 3530 if (softc->fileno != (daddr_t) -1) { 3531 softc->fileno++; 3532 softc->blkno = 0; 3533 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3534 } 3535 } 3536 } 3537 3538 /* 3539 * Incorrect Length usually applies to read, but can apply to writes. 3540 */ 3541 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3542 if (info < 0) { 3543 xpt_print(csio->ccb_h.path, toobig, 3544 csio->dxfer_len - info); 3545 csio->resid = csio->dxfer_len; 3546 error = EIO; 3547 } else { 3548 csio->resid = resid; 3549 if (softc->flags & SA_FLAG_FIXED) { 3550 softc->flags |= SA_FLAG_EIO_PENDING; 3551 } 3552 /* 3553 * Bump the block number if we hadn't seen a filemark. 3554 * Do this independent of errors (we've moved anyway). 3555 */ 3556 if ((stream_valid == 0) || 3557 (stream_bits & SSD_FILEMARK) == 0) { 3558 if (softc->blkno != (daddr_t) -1) { 3559 softc->blkno++; 3560 csio->ccb_h.ccb_pflags |= 3561 SA_POSITION_UPDATED; 3562 } 3563 } 3564 } 3565 } 3566 3567 if (error <= 0) { 3568 /* 3569 * Unfreeze the queue if frozen as we're not returning anything 3570 * to our waiters that would indicate an I/O error has occurred 3571 * (yet). 3572 */ 3573 QFRLS(ccb); 3574 error = 0; 3575 } 3576 return (error); 3577 } 3578 3579 static int 3580 sagetparams(struct cam_periph *periph, sa_params params_to_get, 3581 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3582 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3583 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3584 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3585 int dp_size, int prot_changeable) 3586 { 3587 union ccb *ccb; 3588 void *mode_buffer; 3589 struct scsi_mode_header_6 *mode_hdr; 3590 struct scsi_mode_blk_desc *mode_blk; 3591 int mode_buffer_len; 3592 struct sa_softc *softc; 3593 u_int8_t cpage; 3594 int error; 3595 cam_status status; 3596 3597 softc = (struct sa_softc *)periph->softc; 3598 ccb = cam_periph_getccb(periph, 1); 3599 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3600 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3601 else 3602 cpage = SA_DATA_COMPRESSION_PAGE; 3603 3604 retry: 3605 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3606 3607 if (params_to_get & SA_PARAM_COMPRESSION) { 3608 if (softc->quirks & SA_QUIRK_NOCOMP) { 3609 *comp_supported = FALSE; 3610 params_to_get &= ~SA_PARAM_COMPRESSION; 3611 } else 3612 mode_buffer_len += sizeof (sa_comp_t); 3613 } 3614 3615 /* XXX Fix M_NOWAIT */ 3616 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3617 if (mode_buffer == NULL) { 3618 xpt_release_ccb(ccb); 3619 return (ENOMEM); 3620 } 3621 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3622 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3623 3624 /* it is safe to retry this */ 3625 scsi_mode_sense(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3626 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3627 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3628 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3629 3630 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3631 softc->device_stats); 3632 3633 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3634 3635 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3636 /* 3637 * Hmm. Let's see if we can try another page... 3638 * If we've already done that, give up on compression 3639 * for this device and remember this for the future 3640 * and attempt the request without asking for compression 3641 * info. 3642 */ 3643 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3644 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3645 goto retry; 3646 } 3647 softc->quirks |= SA_QUIRK_NOCOMP; 3648 free(mode_buffer, M_SCSISA); 3649 goto retry; 3650 } else if (status == CAM_SCSI_STATUS_ERROR) { 3651 /* Tell the user about the fatal error. */ 3652 scsi_sense_print(&ccb->csio); 3653 goto sagetparamsexit; 3654 } 3655 3656 /* 3657 * If the user only wants the compression information, and 3658 * the device doesn't send back the block descriptor, it's 3659 * no big deal. If the user wants more than just 3660 * compression, though, and the device doesn't pass back the 3661 * block descriptor, we need to send another mode sense to 3662 * get the block descriptor. 3663 */ 3664 if ((mode_hdr->blk_desc_len == 0) && 3665 (params_to_get & SA_PARAM_COMPRESSION) && 3666 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3667 3668 /* 3669 * Decrease the mode buffer length by the size of 3670 * the compression page, to make sure the data 3671 * there doesn't get overwritten. 3672 */ 3673 mode_buffer_len -= sizeof (sa_comp_t); 3674 3675 /* 3676 * Now move the compression page that we presumably 3677 * got back down the memory chunk a little bit so 3678 * it doesn't get spammed. 3679 */ 3680 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3681 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3682 3683 /* 3684 * Now, we issue another mode sense and just ask 3685 * for the block descriptor, etc. 3686 */ 3687 3688 scsi_mode_sense(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 3689 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3690 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3691 SCSIOP_TIMEOUT); 3692 3693 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3694 softc->device_stats); 3695 3696 if (error != 0) 3697 goto sagetparamsexit; 3698 } 3699 3700 if (params_to_get & SA_PARAM_BLOCKSIZE) 3701 *blocksize = scsi_3btoul(mode_blk->blklen); 3702 3703 if (params_to_get & SA_PARAM_NUMBLOCKS) 3704 *numblocks = scsi_3btoul(mode_blk->nblocks); 3705 3706 if (params_to_get & SA_PARAM_BUFF_MODE) 3707 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 3708 3709 if (params_to_get & SA_PARAM_DENSITY) 3710 *density = mode_blk->density; 3711 3712 if (params_to_get & SA_PARAM_WP) 3713 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 3714 3715 if (params_to_get & SA_PARAM_SPEED) 3716 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 3717 3718 if (params_to_get & SA_PARAM_COMPRESSION) { 3719 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 3720 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3721 struct scsi_data_compression_page *cp = &ntcs->dcomp; 3722 *comp_supported = 3723 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 3724 *comp_enabled = 3725 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 3726 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 3727 } else { 3728 struct scsi_dev_conf_page *cp = &ntcs->dconf; 3729 /* 3730 * We don't really know whether this device supports 3731 * Data Compression if the algorithm field is 3732 * zero. Just say we do. 3733 */ 3734 *comp_supported = TRUE; 3735 *comp_enabled = 3736 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 3737 *comp_algorithm = cp->sel_comp_alg; 3738 } 3739 if (tcs != NULL) 3740 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 3741 } 3742 3743 if ((params_to_get & SA_PARAM_DENSITY_EXT) 3744 && (softc->scsi_rev >= SCSI_REV_SPC)) { 3745 int i; 3746 3747 for (i = 0; i < SA_DENSITY_TYPES; i++) { 3748 scsi_report_density_support(&ccb->csio, 3749 /*retries*/ 1, 3750 /*cbfcnp*/ NULL, 3751 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3752 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 3753 /*medium_type*/ softc->density_type_bits[i] & 3754 SRDS_MEDIUM_TYPE, 3755 /*data_ptr*/ softc->density_info[i], 3756 /*length*/ sizeof(softc->density_info[i]), 3757 /*sense_len*/ SSD_FULL_SIZE, 3758 /*timeout*/ REP_DENSITY_TIMEOUT); 3759 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3760 softc->device_stats); 3761 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3762 3763 /* 3764 * Some tape drives won't support this command at 3765 * all, but hopefully we'll minimize that with the 3766 * check for SPC or greater support above. If they 3767 * don't support the default report (neither the 3768 * MEDIA or MEDIUM_TYPE bits set), then there is 3769 * really no point in continuing on to look for 3770 * other reports. 3771 */ 3772 if ((error != 0) 3773 || (status != CAM_REQ_CMP)) { 3774 error = 0; 3775 softc->density_info_valid[i] = 0; 3776 if (softc->density_type_bits[i] == 0) 3777 break; 3778 else 3779 continue; 3780 } 3781 softc->density_info_valid[i] = ccb->csio.dxfer_len - 3782 ccb->csio.resid; 3783 } 3784 } 3785 3786 /* 3787 * Get logical block protection parameters if the drive supports it. 3788 */ 3789 if ((params_to_get & SA_PARAM_LBP) 3790 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 3791 struct scsi_mode_header_10 *mode10_hdr; 3792 struct scsi_control_data_prot_subpage *dp_page; 3793 struct scsi_mode_sense_10 *cdb; 3794 struct sa_prot_state *prot; 3795 int dp_len, returned_len; 3796 3797 if (dp_size == 0) 3798 dp_size = sizeof(*dp_page); 3799 3800 dp_len = sizeof(*mode10_hdr) + dp_size; 3801 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3802 if (mode10_hdr == NULL) { 3803 error = ENOMEM; 3804 goto sagetparamsexit; 3805 } 3806 3807 scsi_mode_sense_len(&ccb->csio, 3808 /*retries*/ 5, 3809 /*cbfcnp*/ NULL, 3810 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3811 /*dbd*/ TRUE, 3812 /*page_code*/ (prot_changeable == 0) ? 3813 SMS_PAGE_CTRL_CURRENT : 3814 SMS_PAGE_CTRL_CHANGEABLE, 3815 /*page*/ SMS_CONTROL_MODE_PAGE, 3816 /*param_buf*/ (uint8_t *)mode10_hdr, 3817 /*param_len*/ dp_len, 3818 /*minimum_cmd_size*/ 10, 3819 /*sense_len*/ SSD_FULL_SIZE, 3820 /*timeout*/ SCSIOP_TIMEOUT); 3821 /* 3822 * XXX KDM we need to be able to set the subpage in the 3823 * fill function. 3824 */ 3825 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 3826 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 3827 3828 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3829 softc->device_stats); 3830 if (error != 0) { 3831 free(mode10_hdr, M_SCSISA); 3832 goto sagetparamsexit; 3833 } 3834 3835 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3836 if (status != CAM_REQ_CMP) { 3837 error = EINVAL; 3838 free(mode10_hdr, M_SCSISA); 3839 goto sagetparamsexit; 3840 } 3841 3842 /* 3843 * The returned data length at least has to be long enough 3844 * for us to look at length in the mode page header. 3845 */ 3846 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 3847 if (returned_len < sizeof(mode10_hdr->data_length)) { 3848 error = EINVAL; 3849 free(mode10_hdr, M_SCSISA); 3850 goto sagetparamsexit; 3851 } 3852 3853 returned_len = min(returned_len, 3854 sizeof(mode10_hdr->data_length) + 3855 scsi_2btoul(mode10_hdr->data_length)); 3856 3857 dp_page = (struct scsi_control_data_prot_subpage *) 3858 &mode10_hdr[1]; 3859 3860 /* 3861 * We also have to have enough data to include the prot_bits 3862 * in the subpage. 3863 */ 3864 if (returned_len < (sizeof(*mode10_hdr) + 3865 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 3866 + sizeof(dp_page->prot_bits))) { 3867 error = EINVAL; 3868 free(mode10_hdr, M_SCSISA); 3869 goto sagetparamsexit; 3870 } 3871 3872 prot = &softc->prot_info.cur_prot_state; 3873 prot->prot_method = dp_page->prot_method; 3874 prot->pi_length = dp_page->pi_length & 3875 SA_CTRL_DP_PI_LENGTH_MASK; 3876 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 3877 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 3878 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 3879 prot->initialized = 1; 3880 3881 if (prot_page != NULL) 3882 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 3883 sizeof(*dp_page))); 3884 3885 free(mode10_hdr, M_SCSISA); 3886 } 3887 3888 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3889 int idx; 3890 char *xyz = mode_buffer; 3891 xpt_print_path(periph->path); 3892 printf("Mode Sense Data="); 3893 for (idx = 0; idx < mode_buffer_len; idx++) 3894 printf(" 0x%02x", xyz[idx] & 0xff); 3895 printf("\n"); 3896 } 3897 3898 sagetparamsexit: 3899 3900 xpt_release_ccb(ccb); 3901 free(mode_buffer, M_SCSISA); 3902 return (error); 3903 } 3904 3905 /* 3906 * Set protection information to the pending protection information stored 3907 * in the softc. 3908 */ 3909 static int 3910 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 3911 { 3912 struct sa_softc *softc; 3913 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 3914 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 3915 union ccb *ccb; 3916 uint8_t current_speed; 3917 size_t dp_size, dp_page_length; 3918 int dp_len, buff_mode; 3919 int error; 3920 3921 softc = (struct sa_softc *)periph->softc; 3922 mode10_hdr = NULL; 3923 mode10_changeable = NULL; 3924 ccb = NULL; 3925 3926 /* 3927 * Start off with the size set to the actual length of the page 3928 * that we have defined. 3929 */ 3930 dp_size = sizeof(*dp_changeable); 3931 dp_page_length = dp_size - 3932 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 3933 3934 retry_length: 3935 3936 dp_len = sizeof(*mode10_changeable) + dp_size; 3937 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3938 if (mode10_changeable == NULL) { 3939 error = ENOMEM; 3940 goto bailout; 3941 } 3942 3943 dp_changeable = 3944 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 3945 3946 /* 3947 * First get the data protection page changeable parameters mask. 3948 * We need to know which parameters the drive supports changing. 3949 * We also need to know what the drive claims that its page length 3950 * is. The reason is that IBM drives in particular are very picky 3951 * about the page length. They want it (the length set in the 3952 * page structure itself) to be 28 bytes, and they want the 3953 * parameter list length specified in the mode select header to be 3954 * 40 bytes. So, to work with IBM drives as well as any other tape 3955 * drive, find out what the drive claims the page length is, and 3956 * make sure that we match that. 3957 */ 3958 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3959 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3960 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 3961 if (error != 0) 3962 goto bailout; 3963 3964 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 3965 dp_page_length = scsi_2btoul(dp_changeable->length); 3966 dp_size = dp_page_length + 3967 __offsetof(struct scsi_control_data_prot_subpage, 3968 prot_method); 3969 free(mode10_changeable, M_SCSISA); 3970 mode10_changeable = NULL; 3971 goto retry_length; 3972 } 3973 3974 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3975 if (mode10_hdr == NULL) { 3976 error = ENOMEM; 3977 goto bailout; 3978 } 3979 3980 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 3981 3982 /* 3983 * Now grab the actual current settings in the page. 3984 */ 3985 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3986 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3987 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 3988 if (error != 0) 3989 goto bailout; 3990 3991 /* These two fields need to be 0 for MODE SELECT */ 3992 scsi_ulto2b(0, mode10_hdr->data_length); 3993 mode10_hdr->medium_type = 0; 3994 /* We are not including a block descriptor */ 3995 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 3996 3997 mode10_hdr->dev_spec = current_speed; 3998 /* if set, set single-initiator buffering mode */ 3999 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4000 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4001 } 4002 4003 /* 4004 * For each field, make sure that the drive allows changing it 4005 * before bringing in the user's setting. 4006 */ 4007 if (dp_changeable->prot_method != 0) 4008 dp_page->prot_method = new_prot->prot_method; 4009 4010 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 4011 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 4012 dp_page->pi_length |= (new_prot->pi_length & 4013 SA_CTRL_DP_PI_LENGTH_MASK); 4014 } 4015 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 4016 if (new_prot->lbp_w) 4017 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 4018 else 4019 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 4020 } 4021 4022 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 4023 if (new_prot->lbp_r) 4024 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 4025 else 4026 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 4027 } 4028 4029 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 4030 if (new_prot->rbdp) 4031 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 4032 else 4033 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 4034 } 4035 4036 ccb = cam_periph_getccb(periph, 1); 4037 4038 scsi_mode_select_len(&ccb->csio, 4039 /*retries*/ 5, 4040 /*cbfcnp*/ NULL, 4041 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4042 /*scsi_page_fmt*/ TRUE, 4043 /*save_pages*/ FALSE, 4044 /*param_buf*/ (uint8_t *)mode10_hdr, 4045 /*param_len*/ dp_len, 4046 /*minimum_cmd_size*/ 10, 4047 /*sense_len*/ SSD_FULL_SIZE, 4048 /*timeout*/ SCSIOP_TIMEOUT); 4049 4050 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4051 if (error != 0) 4052 goto bailout; 4053 4054 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4055 error = EINVAL; 4056 goto bailout; 4057 } 4058 4059 /* 4060 * The operation was successful. We could just copy the settings 4061 * the user requested, but just in case the drive ignored some of 4062 * our settings, let's ask for status again. 4063 */ 4064 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4065 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4066 NULL, NULL, dp_page, dp_size, 0); 4067 4068 bailout: 4069 if (ccb != NULL) 4070 xpt_release_ccb(ccb); 4071 free(mode10_hdr, M_SCSISA); 4072 free(mode10_changeable, M_SCSISA); 4073 return (error); 4074 } 4075 4076 /* 4077 * The purpose of this function is to set one of four different parameters 4078 * for a tape drive: 4079 * - blocksize 4080 * - density 4081 * - compression / compression algorithm 4082 * - buffering mode 4083 * 4084 * The assumption is that this will be called from saioctl(), and therefore 4085 * from a process context. Thus the waiting malloc calls below. If that 4086 * assumption ever changes, the malloc calls should be changed to be 4087 * NOWAIT mallocs. 4088 * 4089 * Any or all of the four parameters may be set when this function is 4090 * called. It should handle setting more than one parameter at once. 4091 */ 4092 static int 4093 sasetparams(struct cam_periph *periph, sa_params params_to_set, 4094 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4095 u_int32_t sense_flags) 4096 { 4097 struct sa_softc *softc; 4098 u_int32_t current_blocksize; 4099 u_int32_t current_calg; 4100 u_int8_t current_density; 4101 u_int8_t current_speed; 4102 int comp_enabled, comp_supported; 4103 void *mode_buffer; 4104 int mode_buffer_len; 4105 struct scsi_mode_header_6 *mode_hdr; 4106 struct scsi_mode_blk_desc *mode_blk; 4107 sa_comp_t *ccomp, *cpage; 4108 int buff_mode; 4109 union ccb *ccb = NULL; 4110 int error; 4111 4112 softc = (struct sa_softc *)periph->softc; 4113 4114 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4115 if (ccomp == NULL) 4116 return (ENOMEM); 4117 4118 /* 4119 * Since it doesn't make sense to set the number of blocks, or 4120 * write protection, we won't try to get the current value. We 4121 * always want to get the blocksize, so we can set it back to the 4122 * proper value. 4123 */ 4124 error = sagetparams(periph, 4125 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4126 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4127 ¤t_speed, &comp_supported, &comp_enabled, 4128 ¤t_calg, ccomp, NULL, 0, 0); 4129 4130 if (error != 0) { 4131 free(ccomp, M_SCSISA); 4132 return (error); 4133 } 4134 4135 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4136 if (params_to_set & SA_PARAM_COMPRESSION) 4137 mode_buffer_len += sizeof (sa_comp_t); 4138 4139 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4140 if (mode_buffer == NULL) { 4141 free(ccomp, M_SCSISA); 4142 return (ENOMEM); 4143 } 4144 4145 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4146 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4147 4148 ccb = cam_periph_getccb(periph, 1); 4149 4150 retry: 4151 4152 if (params_to_set & SA_PARAM_COMPRESSION) { 4153 if (mode_blk) { 4154 cpage = (sa_comp_t *)&mode_blk[1]; 4155 } else { 4156 cpage = (sa_comp_t *)&mode_hdr[1]; 4157 } 4158 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4159 cpage->hdr.pagecode &= ~0x80; 4160 } else 4161 cpage = NULL; 4162 4163 /* 4164 * If the caller wants us to set the blocksize, use the one they 4165 * pass in. Otherwise, use the blocksize we got back from the 4166 * mode select above. 4167 */ 4168 if (mode_blk) { 4169 if (params_to_set & SA_PARAM_BLOCKSIZE) 4170 scsi_ulto3b(blocksize, mode_blk->blklen); 4171 else 4172 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4173 4174 /* 4175 * Set density if requested, else preserve old density. 4176 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4177 * devices, else density we've latched up in our softc. 4178 */ 4179 if (params_to_set & SA_PARAM_DENSITY) { 4180 mode_blk->density = density; 4181 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4182 mode_blk->density = SCSI_SAME_DENSITY; 4183 } else { 4184 mode_blk->density = softc->media_density; 4185 } 4186 } 4187 4188 /* 4189 * For mode selects, these two fields must be zero. 4190 */ 4191 mode_hdr->data_length = 0; 4192 mode_hdr->medium_type = 0; 4193 4194 /* set the speed to the current value */ 4195 mode_hdr->dev_spec = current_speed; 4196 4197 /* if set, set single-initiator buffering mode */ 4198 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4199 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4200 } 4201 4202 if (mode_blk) 4203 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4204 else 4205 mode_hdr->blk_desc_len = 0; 4206 4207 /* 4208 * First, if the user wants us to set the compression algorithm or 4209 * just turn compression on, check to make sure that this drive 4210 * supports compression. 4211 */ 4212 if (params_to_set & SA_PARAM_COMPRESSION) { 4213 /* 4214 * If the compression algorithm is 0, disable compression. 4215 * If the compression algorithm is non-zero, enable 4216 * compression and set the compression type to the 4217 * specified compression algorithm, unless the algorithm is 4218 * MT_COMP_ENABLE. In that case, we look at the 4219 * compression algorithm that is currently set and if it is 4220 * non-zero, we leave it as-is. If it is zero, and we have 4221 * saved a compression algorithm from a time when 4222 * compression was enabled before, set the compression to 4223 * the saved value. 4224 */ 4225 switch (ccomp->hdr.pagecode & ~0x80) { 4226 case SA_DEVICE_CONFIGURATION_PAGE: 4227 { 4228 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4229 if (calg == 0) { 4230 dcp->sel_comp_alg = SA_COMP_NONE; 4231 break; 4232 } 4233 if (calg != MT_COMP_ENABLE) { 4234 dcp->sel_comp_alg = calg; 4235 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4236 softc->saved_comp_algorithm != 0) { 4237 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4238 } 4239 break; 4240 } 4241 case SA_DATA_COMPRESSION_PAGE: 4242 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4243 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4244 if (calg == 0) { 4245 /* 4246 * Disable compression, but leave the 4247 * decompression and the capability bit 4248 * alone. 4249 */ 4250 dcp->dce_and_dcc = SA_DCP_DCC; 4251 dcp->dde_and_red |= SA_DCP_DDE; 4252 break; 4253 } 4254 /* enable compression && decompression */ 4255 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4256 dcp->dde_and_red |= SA_DCP_DDE; 4257 /* 4258 * If there, use compression algorithm from caller. 4259 * Otherwise, if there's a saved compression algorithm 4260 * and there is no current algorithm, use the saved 4261 * algorithm. Else parrot back what we got and hope 4262 * for the best. 4263 */ 4264 if (calg != MT_COMP_ENABLE) { 4265 scsi_ulto4b(calg, dcp->comp_algorithm); 4266 scsi_ulto4b(calg, dcp->decomp_algorithm); 4267 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4268 softc->saved_comp_algorithm != 0) { 4269 scsi_ulto4b(softc->saved_comp_algorithm, 4270 dcp->comp_algorithm); 4271 scsi_ulto4b(softc->saved_comp_algorithm, 4272 dcp->decomp_algorithm); 4273 } 4274 break; 4275 } 4276 /* 4277 * Compression does not appear to be supported- 4278 * at least via the DATA COMPRESSION page. It 4279 * would be too much to ask us to believe that 4280 * the page itself is supported, but incorrectly 4281 * reports an ability to manipulate data compression, 4282 * so we'll assume that this device doesn't support 4283 * compression. We can just fall through for that. 4284 */ 4285 /* FALLTHROUGH */ 4286 default: 4287 /* 4288 * The drive doesn't seem to support compression, 4289 * so turn off the set compression bit. 4290 */ 4291 params_to_set &= ~SA_PARAM_COMPRESSION; 4292 xpt_print(periph->path, 4293 "device does not seem to support compression\n"); 4294 4295 /* 4296 * If that was the only thing the user wanted us to set, 4297 * clean up allocated resources and return with 4298 * 'operation not supported'. 4299 */ 4300 if (params_to_set == SA_PARAM_NONE) { 4301 free(mode_buffer, M_SCSISA); 4302 xpt_release_ccb(ccb); 4303 return (ENODEV); 4304 } 4305 4306 /* 4307 * That wasn't the only thing the user wanted us to set. 4308 * So, decrease the stated mode buffer length by the 4309 * size of the compression mode page. 4310 */ 4311 mode_buffer_len -= sizeof(sa_comp_t); 4312 } 4313 } 4314 4315 /* It is safe to retry this operation */ 4316 scsi_mode_select(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, 4317 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4318 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4319 4320 error = cam_periph_runccb(ccb, saerror, 0, 4321 sense_flags, softc->device_stats); 4322 4323 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4324 int idx; 4325 char *xyz = mode_buffer; 4326 xpt_print_path(periph->path); 4327 printf("Err%d, Mode Select Data=", error); 4328 for (idx = 0; idx < mode_buffer_len; idx++) 4329 printf(" 0x%02x", xyz[idx] & 0xff); 4330 printf("\n"); 4331 } 4332 4333 4334 if (error) { 4335 /* 4336 * If we can, try without setting density/blocksize. 4337 */ 4338 if (mode_blk) { 4339 if ((params_to_set & 4340 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4341 mode_blk = NULL; 4342 goto retry; 4343 } 4344 } else { 4345 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4346 cpage = (sa_comp_t *)&mode_blk[1]; 4347 } 4348 4349 /* 4350 * If we were setting the blocksize, and that failed, we 4351 * want to set it to its original value. If we weren't 4352 * setting the blocksize, we don't want to change it. 4353 */ 4354 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4355 4356 /* 4357 * Set density if requested, else preserve old density. 4358 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4359 * devices, else density we've latched up in our softc. 4360 */ 4361 if (params_to_set & SA_PARAM_DENSITY) { 4362 mode_blk->density = current_density; 4363 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4364 mode_blk->density = SCSI_SAME_DENSITY; 4365 } else { 4366 mode_blk->density = softc->media_density; 4367 } 4368 4369 if (params_to_set & SA_PARAM_COMPRESSION) 4370 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4371 4372 /* 4373 * The retry count is the only CCB field that might have been 4374 * changed that we care about, so reset it back to 1. 4375 */ 4376 ccb->ccb_h.retry_count = 1; 4377 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4378 softc->device_stats); 4379 } 4380 4381 xpt_release_ccb(ccb); 4382 4383 if (ccomp != NULL) 4384 free(ccomp, M_SCSISA); 4385 4386 if (params_to_set & SA_PARAM_COMPRESSION) { 4387 if (error) { 4388 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4389 /* 4390 * Even if we get an error setting compression, 4391 * do not say that we don't support it. We could 4392 * have been wrong, or it may be media specific. 4393 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4394 */ 4395 softc->saved_comp_algorithm = softc->comp_algorithm; 4396 softc->comp_algorithm = 0; 4397 } else { 4398 softc->flags |= SA_FLAG_COMP_ENABLED; 4399 softc->comp_algorithm = calg; 4400 } 4401 } 4402 4403 free(mode_buffer, M_SCSISA); 4404 return (error); 4405 } 4406 4407 static int 4408 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4409 struct mtextget *g) 4410 { 4411 int indent, error; 4412 char tmpstr[80]; 4413 struct sa_softc *softc; 4414 int tmpint; 4415 uint32_t maxio_tmp; 4416 struct ccb_getdev cgd; 4417 4418 softc = (struct sa_softc *)periph->softc; 4419 4420 error = 0; 4421 4422 error = sagetparams_common(dev, periph); 4423 if (error) 4424 goto extget_bailout; 4425 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4426 sagetpos(periph); 4427 4428 indent = 0; 4429 SASBADDNODE(sb, indent, mtextget); 4430 /* 4431 * Basic CAM peripheral information. 4432 */ 4433 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4434 strlen(periph->periph_name) + 1); 4435 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4436 xpt_setup_ccb(&cgd.ccb_h, 4437 periph->path, 4438 CAM_PRIORITY_NORMAL); 4439 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4440 xpt_action((union ccb *)&cgd); 4441 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4442 g->status = MT_EXT_GET_ERROR; 4443 snprintf(g->error_str, sizeof(g->error_str), 4444 "Error %#x returned for XPT_GDEV_TYPE CCB", 4445 cgd.ccb_h.status); 4446 goto extget_bailout; 4447 } 4448 4449 cam_strvis(tmpstr, cgd.inq_data.vendor, 4450 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4451 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4452 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4453 4454 cam_strvis(tmpstr, cgd.inq_data.product, 4455 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4456 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4457 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4458 4459 cam_strvis(tmpstr, cgd.inq_data.revision, 4460 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4461 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4462 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4463 4464 if (cgd.serial_num_len > 0) { 4465 char *tmpstr2; 4466 size_t ts2_len; 4467 int ts2_malloc; 4468 4469 ts2_len = 0; 4470 4471 if (cgd.serial_num_len > sizeof(tmpstr)) { 4472 ts2_len = cgd.serial_num_len + 1; 4473 ts2_malloc = 1; 4474 tmpstr2 = malloc(ts2_len, M_SCSISA, M_NOWAIT | M_ZERO); 4475 /* 4476 * The 80 characters allocated on the stack above 4477 * will handle the vast majority of serial numbers. 4478 * If we run into one that is larger than that, and 4479 * we can't malloc the length without blocking, 4480 * bail out with an out of memory error. 4481 */ 4482 if (tmpstr2 == NULL) { 4483 error = ENOMEM; 4484 goto extget_bailout; 4485 } 4486 } else { 4487 ts2_len = sizeof(tmpstr); 4488 ts2_malloc = 0; 4489 tmpstr2 = tmpstr; 4490 } 4491 4492 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4493 ts2_len); 4494 4495 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4496 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4497 if (ts2_malloc != 0) 4498 free(tmpstr2, M_SCSISA); 4499 } else { 4500 /* 4501 * We return a serial_num element in any case, but it will 4502 * be empty if the device has no serial number. 4503 */ 4504 tmpstr[0] = '\0'; 4505 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4506 (ssize_t)0, "Serial Number"); 4507 } 4508 4509 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4510 "Maximum I/O size allowed by driver and controller"); 4511 4512 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4513 "Maximum I/O size reported by controller"); 4514 4515 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4516 "Maximum block size supported by tape drive and media"); 4517 4518 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4519 "Minimum block size supported by tape drive and media"); 4520 4521 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4522 "Block granularity supported by tape drive and media"); 4523 4524 maxio_tmp = min(softc->max_blk, softc->maxio); 4525 4526 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4527 "Maximum possible I/O size"); 4528 4529 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4530 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4531 4532 /* 4533 * XXX KDM include SIM, bus, target, LUN? 4534 */ 4535 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4536 tmpint = 0; 4537 else 4538 tmpint = 1; 4539 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4540 "Set to 1 if compression is supported, 0 if not"); 4541 if (softc->flags & SA_FLAG_COMP_ENABLED) 4542 tmpint = 1; 4543 else 4544 tmpint = 0; 4545 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4546 "Set to 1 if compression is enabled, 0 if not"); 4547 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4548 compression_algorithm, "Numeric compression algorithm"); 4549 4550 safillprot(softc, &indent, sb); 4551 4552 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4553 media_blocksize, "Block size reported by drive or set by user"); 4554 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4555 calculated_fileno, "Calculated file number, -1 if unknown"); 4556 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4557 calculated_rel_blkno, "Calculated block number relative to file, " 4558 "set to -1 if unknown"); 4559 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4560 reported_fileno, "File number reported by drive, -1 if unknown"); 4561 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4562 reported_blkno, "Block number relative to BOP/BOT reported by " 4563 "drive, -1 if unknown"); 4564 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4565 partition, "Current partition number, 0 is the default"); 4566 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4567 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4568 "not, -1 if unknown"); 4569 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4570 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4571 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4572 "Set to 1 if drive is past programmable early warning, 0 if not, " 4573 "-1 if unknown"); 4574 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4575 residual, "Residual for the last I/O"); 4576 /* 4577 * XXX KDM should we send a string with the current driver 4578 * status already decoded instead of a numeric value? 4579 */ 4580 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4581 "Current state of the driver"); 4582 4583 safilldensitysb(softc, &indent, sb); 4584 4585 SASBENDNODE(sb, indent, mtextget); 4586 4587 extget_bailout: 4588 4589 return (error); 4590 } 4591 4592 static int 4593 saparamget(struct sa_softc *softc, struct sbuf *sb) 4594 { 4595 int indent; 4596 4597 indent = 0; 4598 SASBADDNODE(sb, indent, mtparamget); 4599 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4600 "Suppress an error on underlength variable reads"); 4601 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4602 "Return an error to warn that end of tape is approaching"); 4603 safillprot(softc, &indent, sb); 4604 SASBENDNODE(sb, indent, mtparamget); 4605 4606 return (0); 4607 } 4608 4609 static void 4610 saprevent(struct cam_periph *periph, int action) 4611 { 4612 struct sa_softc *softc; 4613 union ccb *ccb; 4614 int error, sf; 4615 4616 softc = (struct sa_softc *)periph->softc; 4617 4618 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4619 return; 4620 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4621 return; 4622 4623 /* 4624 * We can be quiet about illegal requests. 4625 */ 4626 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4627 sf = 0; 4628 } else 4629 sf = SF_QUIET_IR; 4630 4631 ccb = cam_periph_getccb(periph, 1); 4632 4633 /* It is safe to retry this operation */ 4634 scsi_prevent(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, action, 4635 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4636 4637 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4638 if (error == 0) { 4639 if (action == PR_ALLOW) 4640 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4641 else 4642 softc->flags |= SA_FLAG_TAPE_LOCKED; 4643 } 4644 4645 xpt_release_ccb(ccb); 4646 } 4647 4648 static int 4649 sarewind(struct cam_periph *periph) 4650 { 4651 union ccb *ccb; 4652 struct sa_softc *softc; 4653 int error; 4654 4655 softc = (struct sa_softc *)periph->softc; 4656 4657 ccb = cam_periph_getccb(periph, 1); 4658 4659 /* It is safe to retry this operation */ 4660 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE, 4661 SSD_FULL_SIZE, REWIND_TIMEOUT); 4662 4663 softc->dsreg = MTIO_DSREG_REW; 4664 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4665 softc->dsreg = MTIO_DSREG_REST; 4666 4667 xpt_release_ccb(ccb); 4668 if (error == 0) { 4669 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4670 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4671 } else { 4672 softc->fileno = softc->blkno = (daddr_t) -1; 4673 softc->partition = (daddr_t) -1; 4674 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4675 } 4676 return (error); 4677 } 4678 4679 static int 4680 saspace(struct cam_periph *periph, int count, scsi_space_code code) 4681 { 4682 union ccb *ccb; 4683 struct sa_softc *softc; 4684 int error; 4685 4686 softc = (struct sa_softc *)periph->softc; 4687 4688 ccb = cam_periph_getccb(periph, 1); 4689 4690 /* This cannot be retried */ 4691 4692 scsi_space(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, code, count, 4693 SSD_FULL_SIZE, SPACE_TIMEOUT); 4694 4695 /* 4696 * Clear residual because we will be using it. 4697 */ 4698 softc->last_ctl_resid = 0; 4699 4700 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4701 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4702 softc->dsreg = MTIO_DSREG_REST; 4703 4704 xpt_release_ccb(ccb); 4705 4706 /* 4707 * If a spacing operation has failed, we need to invalidate 4708 * this mount. 4709 * 4710 * If the spacing operation was setmarks or to end of recorded data, 4711 * we no longer know our relative position. 4712 * 4713 * If the spacing operations was spacing files in reverse, we 4714 * take account of the residual, but still check against less 4715 * than zero- if we've gone negative, we must have hit BOT. 4716 * 4717 * If the spacing operations was spacing records in reverse and 4718 * we have a residual, we've either hit BOT or hit a filemark. 4719 * In the former case, we know our new record number (0). In 4720 * the latter case, we have absolutely no idea what the real 4721 * record number is- we've stopped between the end of the last 4722 * record in the previous file and the filemark that stopped 4723 * our spacing backwards. 4724 */ 4725 if (error) { 4726 softc->fileno = softc->blkno = (daddr_t) -1; 4727 softc->rep_blkno = softc->partition = (daddr_t) -1; 4728 softc->rep_fileno = (daddr_t) -1; 4729 } else if (code == SS_SETMARKS || code == SS_EOD) { 4730 softc->fileno = softc->blkno = (daddr_t) -1; 4731 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4732 softc->fileno += (count - softc->last_ctl_resid); 4733 if (softc->fileno < 0) /* we must of hit BOT */ 4734 softc->fileno = 0; 4735 softc->blkno = 0; 4736 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4737 softc->blkno += (count - softc->last_ctl_resid); 4738 if (count < 0) { 4739 if (softc->last_ctl_resid || softc->blkno < 0) { 4740 if (softc->fileno == 0) { 4741 softc->blkno = 0; 4742 } else { 4743 softc->blkno = (daddr_t) -1; 4744 } 4745 } 4746 } 4747 } 4748 if (error == 0) 4749 sagetpos(periph); 4750 4751 return (error); 4752 } 4753 4754 static int 4755 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4756 { 4757 union ccb *ccb; 4758 struct sa_softc *softc; 4759 int error, nwm = 0; 4760 4761 softc = (struct sa_softc *)periph->softc; 4762 if (softc->open_rdonly) 4763 return (EBADF); 4764 4765 ccb = cam_periph_getccb(periph, 1); 4766 /* 4767 * Clear residual because we will be using it. 4768 */ 4769 softc->last_ctl_resid = 0; 4770 4771 softc->dsreg = MTIO_DSREG_FMK; 4772 /* this *must* not be retried */ 4773 scsi_write_filemarks(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, 4774 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4775 softc->dsreg = MTIO_DSREG_REST; 4776 4777 4778 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4779 4780 if (error == 0 && nmarks) { 4781 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4782 nwm = nmarks - softc->last_ctl_resid; 4783 softc->filemarks += nwm; 4784 } 4785 4786 xpt_release_ccb(ccb); 4787 4788 /* 4789 * Update relative positions (if we're doing that). 4790 */ 4791 if (error) { 4792 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4793 } else if (softc->fileno != (daddr_t) -1) { 4794 softc->fileno += nwm; 4795 softc->blkno = 0; 4796 } 4797 4798 /* 4799 * Ask the tape drive for position information. 4800 */ 4801 sagetpos(periph); 4802 4803 /* 4804 * If we got valid position information, since we just wrote a file 4805 * mark, we know we're at the file mark and block 0 after that 4806 * filemark. 4807 */ 4808 if (softc->rep_fileno != (daddr_t) -1) { 4809 softc->fileno = softc->rep_fileno; 4810 softc->blkno = 0; 4811 } 4812 4813 return (error); 4814 } 4815 4816 static int 4817 sagetpos(struct cam_periph *periph) 4818 { 4819 union ccb *ccb; 4820 struct scsi_tape_position_long_data long_pos; 4821 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4822 int error; 4823 4824 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4825 softc->rep_fileno = (daddr_t) -1; 4826 softc->rep_blkno = (daddr_t) -1; 4827 softc->bop = softc->eop = softc->bpew = -1; 4828 return (EOPNOTSUPP); 4829 } 4830 4831 bzero(&long_pos, sizeof(long_pos)); 4832 4833 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4834 scsi_read_position_10(&ccb->csio, 4835 /*retries*/ 1, 4836 /*cbfcnp*/ NULL, 4837 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4838 /*service_action*/ SA_RPOS_LONG_FORM, 4839 /*data_ptr*/ (uint8_t *)&long_pos, 4840 /*length*/ sizeof(long_pos), 4841 /*sense_len*/ SSD_FULL_SIZE, 4842 /*timeout*/ SCSIOP_TIMEOUT); 4843 4844 softc->dsreg = MTIO_DSREG_RBSY; 4845 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4846 softc->device_stats); 4847 softc->dsreg = MTIO_DSREG_REST; 4848 4849 if (error == 0) { 4850 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4851 /* 4852 * If the drive doesn't know what file mark it is 4853 * on, our calculated filemark isn't going to be 4854 * accurate either. 4855 */ 4856 softc->fileno = (daddr_t) -1; 4857 softc->rep_fileno = (daddr_t) -1; 4858 } else { 4859 softc->fileno = softc->rep_fileno = 4860 scsi_8btou64(long_pos.logical_file_num); 4861 } 4862 4863 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4864 softc->partition = (daddr_t) -1; 4865 softc->rep_blkno = (daddr_t) -1; 4866 /* 4867 * If the tape drive doesn't know its block 4868 * position, we can't claim to know it either. 4869 */ 4870 softc->blkno = (daddr_t) -1; 4871 } else { 4872 softc->partition = scsi_4btoul(long_pos.partition); 4873 softc->rep_blkno = 4874 scsi_8btou64(long_pos.logical_object_num); 4875 } 4876 if (long_pos.flags & SA_RPOS_LONG_BOP) 4877 softc->bop = 1; 4878 else 4879 softc->bop = 0; 4880 4881 if (long_pos.flags & SA_RPOS_LONG_EOP) 4882 softc->eop = 1; 4883 else 4884 softc->eop = 0; 4885 4886 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 4887 || (softc->set_pews_status != 0)) { 4888 softc->bpew = 1; 4889 if (softc->set_pews_status > 0) 4890 softc->set_pews_status--; 4891 } else 4892 softc->bpew = 0; 4893 } else if (error == EINVAL) { 4894 /* 4895 * If this drive returned an invalid-request type error, 4896 * then it likely doesn't support the long form report. 4897 */ 4898 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4899 } 4900 4901 if (error != 0) { 4902 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4903 softc->partition = (daddr_t) -1; 4904 softc->bop = softc->eop = softc->bpew = -1; 4905 } 4906 4907 xpt_release_ccb(ccb); 4908 4909 return (error); 4910 } 4911 4912 static int 4913 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4914 { 4915 struct scsi_tape_position_data loc; 4916 union ccb *ccb; 4917 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4918 int error; 4919 4920 /* 4921 * We try and flush any buffered writes here if we were writing 4922 * and we're trying to get hardware block position. It eats 4923 * up performance substantially, but I'm wary of drive firmware. 4924 * 4925 * I think that *logical* block position is probably okay- 4926 * but hardware block position might have to wait for data 4927 * to hit media to be valid. Caveat Emptor. 4928 */ 4929 4930 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4931 error = sawritefilemarks(periph, 0, 0, 0); 4932 if (error && error != EACCES) 4933 return (error); 4934 } 4935 4936 ccb = cam_periph_getccb(periph, 1); 4937 scsi_read_position(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, 4938 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4939 softc->dsreg = MTIO_DSREG_RBSY; 4940 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4941 softc->dsreg = MTIO_DSREG_REST; 4942 4943 if (error == 0) { 4944 if (loc.flags & SA_RPOS_UNCERTAIN) { 4945 error = EINVAL; /* nothing is certain */ 4946 } else { 4947 *blkptr = scsi_4btoul(loc.firstblk); 4948 } 4949 } 4950 4951 xpt_release_ccb(ccb); 4952 return (error); 4953 } 4954 4955 static int 4956 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4957 { 4958 union ccb *ccb; 4959 struct sa_softc *softc; 4960 int locate16; 4961 int immed, cp; 4962 int error; 4963 4964 /* 4965 * We used to try and flush any buffered writes here. 4966 * Now we push this onto user applications to either 4967 * flush the pending writes themselves (via a zero count 4968 * WRITE FILEMARKS command) or they can trust their tape 4969 * drive to do this correctly for them. 4970 */ 4971 4972 softc = (struct sa_softc *)periph->softc; 4973 ccb = cam_periph_getccb(periph, 1); 4974 4975 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4976 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4977 4978 /* 4979 * Determine whether we have to use LOCATE or LOCATE16. The hard 4980 * bit is only possible with LOCATE, but the new ioctls do not 4981 * allow setting that bit. So we can't get into the situation of 4982 * having the hard bit set with a block address that is larger than 4983 * 32-bits. 4984 */ 4985 if (hard != 0) 4986 locate16 = 0; 4987 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4988 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4989 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4990 locate16 = 1; 4991 else 4992 locate16 = 0; 4993 4994 if (locate16 != 0) { 4995 scsi_locate_16(&ccb->csio, 4996 /*retries*/ 1, 4997 /*cbfcnp*/ NULL, 4998 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4999 /*immed*/ immed, 5000 /*cp*/ cp, 5001 /*dest_type*/ locate_info->dest_type, 5002 /*bam*/ locate_info->block_address_mode, 5003 /*partition*/ locate_info->partition, 5004 /*logical_id*/ locate_info->logical_id, 5005 /*sense_len*/ SSD_FULL_SIZE, 5006 /*timeout*/ SPACE_TIMEOUT); 5007 } else { 5008 scsi_locate_10(&ccb->csio, 5009 /*retries*/ 1, 5010 /*cbfcnp*/ NULL, 5011 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5012 /*immed*/ immed, 5013 /*cp*/ cp, 5014 /*hard*/ hard, 5015 /*partition*/ locate_info->partition, 5016 /*block_address*/ locate_info->logical_id, 5017 /*sense_len*/ SSD_FULL_SIZE, 5018 /*timeout*/ SPACE_TIMEOUT); 5019 } 5020 5021 softc->dsreg = MTIO_DSREG_POS; 5022 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5023 softc->dsreg = MTIO_DSREG_REST; 5024 xpt_release_ccb(ccb); 5025 5026 /* 5027 * We assume the calculated file and block numbers are unknown 5028 * unless we have enough information to populate them. 5029 */ 5030 softc->fileno = softc->blkno = (daddr_t) -1; 5031 5032 /* 5033 * If the user requested changing the partition and the request 5034 * succeeded, note the partition. 5035 */ 5036 if ((error == 0) 5037 && (cp != 0)) 5038 softc->partition = locate_info->partition; 5039 else 5040 softc->partition = (daddr_t) -1; 5041 5042 if (error == 0) { 5043 switch (locate_info->dest_type) { 5044 case MT_LOCATE_DEST_FILE: 5045 /* 5046 * This is the only case where we can reliably 5047 * calculate the file and block numbers. 5048 */ 5049 softc->fileno = locate_info->logical_id; 5050 softc->blkno = 0; 5051 break; 5052 case MT_LOCATE_DEST_OBJECT: 5053 case MT_LOCATE_DEST_SET: 5054 case MT_LOCATE_DEST_EOD: 5055 default: 5056 break; 5057 } 5058 } 5059 5060 /* 5061 * Ask the drive for current position information. 5062 */ 5063 sagetpos(periph); 5064 5065 return (error); 5066 } 5067 5068 static int 5069 saretension(struct cam_periph *periph) 5070 { 5071 union ccb *ccb; 5072 struct sa_softc *softc; 5073 int error; 5074 5075 softc = (struct sa_softc *)periph->softc; 5076 5077 ccb = cam_periph_getccb(periph, 1); 5078 5079 /* It is safe to retry this operation */ 5080 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5081 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5082 5083 softc->dsreg = MTIO_DSREG_TEN; 5084 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5085 softc->dsreg = MTIO_DSREG_REST; 5086 5087 xpt_release_ccb(ccb); 5088 if (error == 0) { 5089 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5090 sagetpos(periph); 5091 } else 5092 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5093 return (error); 5094 } 5095 5096 static int 5097 sareservereleaseunit(struct cam_periph *periph, int reserve) 5098 { 5099 union ccb *ccb; 5100 struct sa_softc *softc; 5101 int error; 5102 5103 softc = (struct sa_softc *)periph->softc; 5104 ccb = cam_periph_getccb(periph, 1); 5105 5106 /* It is safe to retry this operation */ 5107 scsi_reserve_release_unit(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, 5108 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5109 softc->dsreg = MTIO_DSREG_RBSY; 5110 error = cam_periph_runccb(ccb, saerror, 0, 5111 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5112 softc->dsreg = MTIO_DSREG_REST; 5113 xpt_release_ccb(ccb); 5114 5115 /* 5116 * If the error was Illegal Request, then the device doesn't support 5117 * RESERVE/RELEASE. This is not an error. 5118 */ 5119 if (error == EINVAL) { 5120 error = 0; 5121 } 5122 5123 return (error); 5124 } 5125 5126 static int 5127 saloadunload(struct cam_periph *periph, int load) 5128 { 5129 union ccb *ccb; 5130 struct sa_softc *softc; 5131 int error; 5132 5133 softc = (struct sa_softc *)periph->softc; 5134 5135 ccb = cam_periph_getccb(periph, 1); 5136 5137 /* It is safe to retry this operation */ 5138 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE, 5139 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5140 5141 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5142 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5143 softc->dsreg = MTIO_DSREG_REST; 5144 xpt_release_ccb(ccb); 5145 5146 if (error || load == 0) { 5147 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5148 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5149 } else if (error == 0) { 5150 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5151 sagetpos(periph); 5152 } 5153 return (error); 5154 } 5155 5156 static int 5157 saerase(struct cam_periph *periph, int longerase) 5158 { 5159 5160 union ccb *ccb; 5161 struct sa_softc *softc; 5162 int error; 5163 5164 softc = (struct sa_softc *)periph->softc; 5165 if (softc->open_rdonly) 5166 return (EBADF); 5167 5168 ccb = cam_periph_getccb(periph, 1); 5169 5170 scsi_erase(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5171 SSD_FULL_SIZE, ERASE_TIMEOUT); 5172 5173 softc->dsreg = MTIO_DSREG_ZER; 5174 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5175 softc->dsreg = MTIO_DSREG_REST; 5176 5177 xpt_release_ccb(ccb); 5178 return (error); 5179 } 5180 5181 /* 5182 * Fill an sbuf with density data in XML format. This particular macro 5183 * works for multi-byte integer fields. 5184 * 5185 * Note that 1 byte fields aren't supported here. The reason is that the 5186 * compiler does not evaluate the sizeof(), and assumes that any of the 5187 * sizes are possible for a given field. So passing in a multi-byte 5188 * field will result in a warning that the assignment makes an integer 5189 * from a pointer without a cast, if there is an assignment in the 1 byte 5190 * case. 5191 */ 5192 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5193 len_to_go, cur_offset, desc){ \ 5194 size_t cur_field_len; \ 5195 \ 5196 cur_field_len = sizeof(dens_data->field); \ 5197 if (desc_remain < cur_field_len) { \ 5198 len_to_go -= desc_remain; \ 5199 cur_offset += desc_remain; \ 5200 continue; \ 5201 } \ 5202 len_to_go -= cur_field_len; \ 5203 cur_offset += cur_field_len; \ 5204 desc_remain -= cur_field_len; \ 5205 \ 5206 switch (sizeof(dens_data->field)) { \ 5207 case 1: \ 5208 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5209 "field width for SAFILLDENSFIELD")); \ 5210 break; \ 5211 case 2: \ 5212 SASBADDUINTDESC(sb, indent, \ 5213 scsi_2btoul(dens_data->field), %u, field, desc); \ 5214 break; \ 5215 case 3: \ 5216 SASBADDUINTDESC(sb, indent, \ 5217 scsi_3btoul(dens_data->field), %u, field, desc); \ 5218 break; \ 5219 case 4: \ 5220 SASBADDUINTDESC(sb, indent, \ 5221 scsi_4btoul(dens_data->field), %u, field, desc); \ 5222 break; \ 5223 case 8: \ 5224 SASBADDUINTDESC(sb, indent, \ 5225 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5226 field, desc); \ 5227 break; \ 5228 default: \ 5229 break; \ 5230 } \ 5231 }; 5232 /* 5233 * Fill an sbuf with density data in XML format. This particular macro 5234 * works for strings. 5235 */ 5236 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5237 len_to_go, cur_offset, desc){ \ 5238 size_t cur_field_len; \ 5239 char tmpstr[32]; \ 5240 \ 5241 cur_field_len = sizeof(dens_data->field); \ 5242 if (desc_remain < cur_field_len) { \ 5243 len_to_go -= desc_remain; \ 5244 cur_offset += desc_remain; \ 5245 continue; \ 5246 } \ 5247 len_to_go -= cur_field_len; \ 5248 cur_offset += cur_field_len; \ 5249 desc_remain -= cur_field_len; \ 5250 \ 5251 cam_strvis(tmpstr, dens_data->field, \ 5252 sizeof(dens_data->field), sizeof(tmpstr)); \ 5253 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5254 strlen(tmpstr) + 1, desc); \ 5255 }; 5256 5257 /* 5258 * Fill an sbuf with density data descriptors. 5259 */ 5260 static void 5261 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5262 int is_density) 5263 { 5264 struct scsi_density_hdr *hdr; 5265 uint32_t hdr_len; 5266 int len_to_go, cur_offset; 5267 int length_offset; 5268 int num_reports, need_close; 5269 5270 /* 5271 * We need at least the header length. Note that this isn't an 5272 * error, not all tape drives will have every data type. 5273 */ 5274 if (buf_len < sizeof(*hdr)) 5275 goto bailout; 5276 5277 5278 hdr = (struct scsi_density_hdr *)buf; 5279 hdr_len = scsi_2btoul(hdr->length); 5280 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5281 if (is_density) { 5282 length_offset = __offsetof(struct scsi_density_data, 5283 bits_per_mm); 5284 } else { 5285 length_offset = __offsetof(struct scsi_medium_type_data, 5286 num_density_codes); 5287 } 5288 cur_offset = sizeof(*hdr); 5289 5290 num_reports = 0; 5291 need_close = 0; 5292 5293 while (len_to_go > length_offset) { 5294 struct scsi_density_data *dens_data; 5295 struct scsi_medium_type_data *type_data; 5296 int desc_remain; 5297 size_t cur_field_len; 5298 5299 dens_data = NULL; 5300 type_data = NULL; 5301 5302 if (is_density) { 5303 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5304 if (dens_data->byte2 & SDD_DLV) 5305 desc_remain = scsi_2btoul(dens_data->length); 5306 else 5307 desc_remain = SDD_DEFAULT_LENGTH - 5308 length_offset; 5309 } else { 5310 type_data = (struct scsi_medium_type_data *) 5311 &buf[cur_offset]; 5312 desc_remain = scsi_2btoul(type_data->length); 5313 } 5314 5315 len_to_go -= length_offset; 5316 desc_remain = min(desc_remain, len_to_go); 5317 cur_offset += length_offset; 5318 5319 if (need_close != 0) { 5320 SASBENDNODE(sb, *indent, density_entry); 5321 } 5322 5323 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5324 num_reports++; 5325 need_close = 1; 5326 5327 if (is_density) { 5328 SASBADDUINTDESC(sb, *indent, 5329 dens_data->primary_density_code, %u, 5330 primary_density_code, "Primary Density Code"); 5331 SASBADDUINTDESC(sb, *indent, 5332 dens_data->secondary_density_code, %u, 5333 secondary_density_code, "Secondary Density Code"); 5334 SASBADDUINTDESC(sb, *indent, 5335 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5336 "Density Flags"); 5337 5338 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5339 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5340 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5341 desc_remain, len_to_go, cur_offset, "Media width"); 5342 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5343 desc_remain, len_to_go, cur_offset, 5344 "Number of Tracks"); 5345 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5346 desc_remain, len_to_go, cur_offset, "Capacity"); 5347 5348 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5349 desc_remain, len_to_go, cur_offset, 5350 "Assigning Organization"); 5351 5352 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5353 desc_remain, len_to_go, cur_offset, "Density Name"); 5354 5355 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5356 desc_remain, len_to_go, cur_offset, "Description"); 5357 } else { 5358 int i; 5359 5360 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5361 %u, medium_type, "Medium Type"); 5362 5363 cur_field_len = 5364 __offsetof(struct scsi_medium_type_data, 5365 media_width) - 5366 __offsetof(struct scsi_medium_type_data, 5367 num_density_codes); 5368 5369 if (desc_remain < cur_field_len) { 5370 len_to_go -= desc_remain; 5371 cur_offset += desc_remain; 5372 continue; 5373 } 5374 len_to_go -= cur_field_len; 5375 cur_offset += cur_field_len; 5376 desc_remain -= cur_field_len; 5377 5378 SASBADDINTDESC(sb, *indent, 5379 type_data->num_density_codes, %d, 5380 num_density_codes, "Number of Density Codes"); 5381 SASBADDNODE(sb, *indent, density_code_list); 5382 for (i = 0; i < type_data->num_density_codes; 5383 i++) { 5384 SASBADDUINTDESC(sb, *indent, 5385 type_data->primary_density_codes[i], %u, 5386 density_code, "Density Code"); 5387 } 5388 SASBENDNODE(sb, *indent, density_code_list); 5389 5390 SAFILLDENSSB(type_data, sb, *indent, media_width, 5391 desc_remain, len_to_go, cur_offset, 5392 "Media width"); 5393 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5394 desc_remain, len_to_go, cur_offset, 5395 "Medium length"); 5396 5397 /* 5398 * Account for the two reserved bytes. 5399 */ 5400 cur_field_len = sizeof(type_data->reserved2); 5401 if (desc_remain < cur_field_len) { 5402 len_to_go -= desc_remain; 5403 cur_offset += desc_remain; 5404 continue; 5405 } 5406 len_to_go -= cur_field_len; 5407 cur_offset += cur_field_len; 5408 desc_remain -= cur_field_len; 5409 5410 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5411 desc_remain, len_to_go, cur_offset, 5412 "Assigning Organization"); 5413 SAFILLDENSSBSTR(type_data, sb, *indent, 5414 medium_type_name, desc_remain, len_to_go, 5415 cur_offset, "Medium type name"); 5416 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5417 desc_remain, len_to_go, cur_offset, "Description"); 5418 5419 } 5420 } 5421 if (need_close != 0) { 5422 SASBENDNODE(sb, *indent, density_entry); 5423 } 5424 5425 bailout: 5426 return; 5427 } 5428 5429 /* 5430 * Fill an sbuf with density data information 5431 */ 5432 static void 5433 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5434 { 5435 int i, is_density; 5436 5437 SASBADDNODE(sb, *indent, mtdensity); 5438 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5439 "Current Medium Density"); 5440 is_density = 0; 5441 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5442 int tmpint; 5443 5444 if (softc->density_info_valid[i] == 0) 5445 continue; 5446 5447 SASBADDNODE(sb, *indent, density_report); 5448 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5449 tmpint = 1; 5450 is_density = 0; 5451 } else { 5452 tmpint = 0; 5453 is_density = 1; 5454 } 5455 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5456 "Medium type report"); 5457 5458 if (softc->density_type_bits[i] & SRDS_MEDIA) 5459 tmpint = 1; 5460 else 5461 tmpint = 0; 5462 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5463 "Media report"); 5464 5465 safilldenstypesb(sb, indent, softc->density_info[i], 5466 softc->density_info_valid[i], is_density); 5467 SASBENDNODE(sb, *indent, density_report); 5468 } 5469 SASBENDNODE(sb, *indent, mtdensity); 5470 } 5471 5472 #endif /* _KERNEL */ 5473 5474 /* 5475 * Read tape block limits command. 5476 */ 5477 void 5478 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5479 void (*cbfcnp)(struct cam_periph *, union ccb *), 5480 u_int8_t tag_action, 5481 struct scsi_read_block_limits_data *rlimit_buf, 5482 u_int8_t sense_len, u_int32_t timeout) 5483 { 5484 struct scsi_read_block_limits *scsi_cmd; 5485 5486 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5487 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5488 sizeof(*scsi_cmd), timeout); 5489 5490 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5491 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5492 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5493 } 5494 5495 void 5496 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5497 void (*cbfcnp)(struct cam_periph *, union ccb *), 5498 u_int8_t tag_action, int readop, int sli, 5499 int fixed, u_int32_t length, u_int8_t *data_ptr, 5500 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5501 { 5502 struct scsi_sa_rw *scsi_cmd; 5503 int read; 5504 5505 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5506 5507 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5508 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5509 scsi_cmd->sli_fixed = 0; 5510 if (sli && read) 5511 scsi_cmd->sli_fixed |= SAR_SLI; 5512 if (fixed) 5513 scsi_cmd->sli_fixed |= SARW_FIXED; 5514 scsi_ulto3b(length, scsi_cmd->length); 5515 scsi_cmd->control = 0; 5516 5517 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5518 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5519 tag_action, data_ptr, dxfer_len, sense_len, 5520 sizeof(*scsi_cmd), timeout); 5521 } 5522 5523 void 5524 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5525 void (*cbfcnp)(struct cam_periph *, union ccb *), 5526 u_int8_t tag_action, int immediate, int eot, 5527 int reten, int load, u_int8_t sense_len, 5528 u_int32_t timeout) 5529 { 5530 struct scsi_load_unload *scsi_cmd; 5531 5532 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5533 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5534 scsi_cmd->opcode = LOAD_UNLOAD; 5535 if (immediate) 5536 scsi_cmd->immediate = SLU_IMMED; 5537 if (eot) 5538 scsi_cmd->eot_reten_load |= SLU_EOT; 5539 if (reten) 5540 scsi_cmd->eot_reten_load |= SLU_RETEN; 5541 if (load) 5542 scsi_cmd->eot_reten_load |= SLU_LOAD; 5543 5544 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5545 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5546 } 5547 5548 void 5549 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5550 void (*cbfcnp)(struct cam_periph *, union ccb *), 5551 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5552 u_int32_t timeout) 5553 { 5554 struct scsi_rewind *scsi_cmd; 5555 5556 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5557 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5558 scsi_cmd->opcode = REWIND; 5559 if (immediate) 5560 scsi_cmd->immediate = SREW_IMMED; 5561 5562 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5563 0, sense_len, sizeof(*scsi_cmd), timeout); 5564 } 5565 5566 void 5567 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5568 void (*cbfcnp)(struct cam_periph *, union ccb *), 5569 u_int8_t tag_action, scsi_space_code code, 5570 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5571 { 5572 struct scsi_space *scsi_cmd; 5573 5574 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5575 scsi_cmd->opcode = SPACE; 5576 scsi_cmd->code = code; 5577 scsi_ulto3b(count, scsi_cmd->count); 5578 scsi_cmd->control = 0; 5579 5580 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5581 0, sense_len, sizeof(*scsi_cmd), timeout); 5582 } 5583 5584 void 5585 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5586 void (*cbfcnp)(struct cam_periph *, union ccb *), 5587 u_int8_t tag_action, int immediate, int setmark, 5588 u_int32_t num_marks, u_int8_t sense_len, 5589 u_int32_t timeout) 5590 { 5591 struct scsi_write_filemarks *scsi_cmd; 5592 5593 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5594 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5595 scsi_cmd->opcode = WRITE_FILEMARKS; 5596 if (immediate) 5597 scsi_cmd->byte2 |= SWFMRK_IMMED; 5598 if (setmark) 5599 scsi_cmd->byte2 |= SWFMRK_WSMK; 5600 5601 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5602 5603 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5604 0, sense_len, sizeof(*scsi_cmd), timeout); 5605 } 5606 5607 /* 5608 * The reserve and release unit commands differ only by their opcodes. 5609 */ 5610 void 5611 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5612 void (*cbfcnp)(struct cam_periph *, union ccb *), 5613 u_int8_t tag_action, int third_party, 5614 int third_party_id, u_int8_t sense_len, 5615 u_int32_t timeout, int reserve) 5616 { 5617 struct scsi_reserve_release_unit *scsi_cmd; 5618 5619 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5620 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5621 5622 if (reserve) 5623 scsi_cmd->opcode = RESERVE_UNIT; 5624 else 5625 scsi_cmd->opcode = RELEASE_UNIT; 5626 5627 if (third_party) { 5628 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5629 scsi_cmd->lun_thirdparty |= 5630 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5631 } 5632 5633 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5634 0, sense_len, sizeof(*scsi_cmd), timeout); 5635 } 5636 5637 void 5638 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5639 void (*cbfcnp)(struct cam_periph *, union ccb *), 5640 u_int8_t tag_action, int immediate, int long_erase, 5641 u_int8_t sense_len, u_int32_t timeout) 5642 { 5643 struct scsi_erase *scsi_cmd; 5644 5645 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5646 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5647 5648 scsi_cmd->opcode = ERASE; 5649 5650 if (immediate) 5651 scsi_cmd->lun_imm_long |= SE_IMMED; 5652 5653 if (long_erase) 5654 scsi_cmd->lun_imm_long |= SE_LONG; 5655 5656 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5657 0, sense_len, sizeof(*scsi_cmd), timeout); 5658 } 5659 5660 /* 5661 * Read Tape Position command. 5662 */ 5663 void 5664 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5665 void (*cbfcnp)(struct cam_periph *, union ccb *), 5666 u_int8_t tag_action, int hardsoft, 5667 struct scsi_tape_position_data *sbp, 5668 u_int8_t sense_len, u_int32_t timeout) 5669 { 5670 struct scsi_tape_read_position *scmd; 5671 5672 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5673 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5674 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5675 bzero(scmd, sizeof(*scmd)); 5676 scmd->opcode = READ_POSITION; 5677 scmd->byte1 = hardsoft; 5678 } 5679 5680 /* 5681 * Read Tape Position command. 5682 */ 5683 void 5684 scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5685 void (*cbfcnp)(struct cam_periph *, union ccb *), 5686 u_int8_t tag_action, int service_action, 5687 u_int8_t *data_ptr, u_int32_t length, 5688 u_int32_t sense_len, u_int32_t timeout) 5689 { 5690 struct scsi_tape_read_position *scmd; 5691 5692 cam_fill_csio(csio, 5693 retries, 5694 cbfcnp, 5695 /*flags*/CAM_DIR_IN, 5696 tag_action, 5697 /*data_ptr*/data_ptr, 5698 /*dxfer_len*/length, 5699 sense_len, 5700 sizeof(*scmd), 5701 timeout); 5702 5703 5704 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5705 bzero(scmd, sizeof(*scmd)); 5706 scmd->opcode = READ_POSITION; 5707 scmd->byte1 = service_action; 5708 /* 5709 * The length is only currently set (as of SSC4r03) if the extended 5710 * form is specified. The other forms have fixed lengths. 5711 */ 5712 if (service_action == SA_RPOS_EXTENDED_FORM) 5713 scsi_ulto2b(length, scmd->length); 5714 } 5715 5716 /* 5717 * Set Tape Position command. 5718 */ 5719 void 5720 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5721 void (*cbfcnp)(struct cam_periph *, union ccb *), 5722 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5723 u_int8_t sense_len, u_int32_t timeout) 5724 { 5725 struct scsi_tape_locate *scmd; 5726 5727 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5728 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5729 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5730 bzero(scmd, sizeof(*scmd)); 5731 scmd->opcode = LOCATE; 5732 if (hardsoft) 5733 scmd->byte1 |= SA_SPOS_BT; 5734 scsi_ulto4b(blkno, scmd->blkaddr); 5735 } 5736 5737 /* 5738 * XXX KDM figure out how to make a compatibility function. 5739 */ 5740 void 5741 scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5742 void (*cbfcnp)(struct cam_periph *, union ccb *), 5743 u_int8_t tag_action, int immed, int cp, int hard, 5744 int64_t partition, u_int32_t block_address, 5745 int sense_len, u_int32_t timeout) 5746 { 5747 struct scsi_tape_locate *scmd; 5748 5749 cam_fill_csio(csio, 5750 retries, 5751 cbfcnp, 5752 CAM_DIR_NONE, 5753 tag_action, 5754 /*data_ptr*/ NULL, 5755 /*dxfer_len*/ 0, 5756 sense_len, 5757 sizeof(*scmd), 5758 timeout); 5759 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5760 bzero(scmd, sizeof(*scmd)); 5761 scmd->opcode = LOCATE; 5762 if (immed) 5763 scmd->byte1 |= SA_SPOS_IMMED; 5764 if (cp) 5765 scmd->byte1 |= SA_SPOS_CP; 5766 if (hard) 5767 scmd->byte1 |= SA_SPOS_BT; 5768 scsi_ulto4b(block_address, scmd->blkaddr); 5769 scmd->partition = partition; 5770 } 5771 5772 void 5773 scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5774 void (*cbfcnp)(struct cam_periph *, union ccb *), 5775 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5776 int bam, int64_t partition, u_int64_t logical_id, 5777 int sense_len, u_int32_t timeout) 5778 { 5779 5780 struct scsi_locate_16 *scsi_cmd; 5781 5782 cam_fill_csio(csio, 5783 retries, 5784 cbfcnp, 5785 /*flags*/CAM_DIR_NONE, 5786 tag_action, 5787 /*data_ptr*/NULL, 5788 /*dxfer_len*/0, 5789 sense_len, 5790 sizeof(*scsi_cmd), 5791 timeout); 5792 5793 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5794 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5795 scsi_cmd->opcode = LOCATE_16; 5796 if (immed) 5797 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5798 if (cp) 5799 scsi_cmd->byte1 |= SA_LC_CP; 5800 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5801 5802 scsi_cmd->byte2 |= bam; 5803 scsi_cmd->partition = partition; 5804 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5805 } 5806 5807 void 5808 scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5809 void (*cbfcnp)(struct cam_periph *, union ccb *), 5810 u_int8_t tag_action, int media, int medium_type, 5811 u_int8_t *data_ptr, u_int32_t length, 5812 u_int32_t sense_len, u_int32_t timeout) 5813 { 5814 struct scsi_report_density_support *scsi_cmd; 5815 5816 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5817 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5818 5819 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5820 if (media != 0) 5821 scsi_cmd->byte1 |= SRDS_MEDIA; 5822 if (medium_type != 0) 5823 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5824 5825 scsi_ulto2b(length, scsi_cmd->length); 5826 5827 cam_fill_csio(csio, 5828 retries, 5829 cbfcnp, 5830 /*flags*/CAM_DIR_IN, 5831 tag_action, 5832 /*data_ptr*/data_ptr, 5833 /*dxfer_len*/length, 5834 sense_len, 5835 sizeof(*scsi_cmd), 5836 timeout); 5837 } 5838 5839 void 5840 scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5841 void (*cbfcnp)(struct cam_periph *, union ccb *), 5842 u_int8_t tag_action, int byte1, u_int32_t proportion, 5843 u_int32_t sense_len, u_int32_t timeout) 5844 { 5845 struct scsi_set_capacity *scsi_cmd; 5846 5847 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5848 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5849 5850 scsi_cmd->opcode = SET_CAPACITY; 5851 5852 scsi_cmd->byte1 = byte1; 5853 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5854 5855 cam_fill_csio(csio, 5856 retries, 5857 cbfcnp, 5858 /*flags*/CAM_DIR_NONE, 5859 tag_action, 5860 /*data_ptr*/NULL, 5861 /*dxfer_len*/0, 5862 sense_len, 5863 sizeof(*scsi_cmd), 5864 timeout); 5865 } 5866 5867 void 5868 scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5869 void (*cbfcnp)(struct cam_periph *, union ccb *), 5870 u_int8_t tag_action, int byte1, int byte2, 5871 u_int8_t *data_ptr, u_int32_t dxfer_len, 5872 u_int32_t sense_len, u_int32_t timeout) 5873 { 5874 struct scsi_format_medium *scsi_cmd; 5875 5876 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5877 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5878 5879 scsi_cmd->opcode = FORMAT_MEDIUM; 5880 5881 scsi_cmd->byte1 = byte1; 5882 scsi_cmd->byte2 = byte2; 5883 5884 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5885 5886 cam_fill_csio(csio, 5887 retries, 5888 cbfcnp, 5889 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5890 tag_action, 5891 /*data_ptr*/ data_ptr, 5892 /*dxfer_len*/ dxfer_len, 5893 sense_len, 5894 sizeof(*scsi_cmd), 5895 timeout); 5896 } 5897 5898 void 5899 scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5900 void (*cbfcnp)(struct cam_periph *, union ccb *), 5901 u_int8_t tag_action, int allow_overwrite, int partition, 5902 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5903 { 5904 struct scsi_allow_overwrite *scsi_cmd; 5905 5906 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5907 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5908 5909 scsi_cmd->opcode = ALLOW_OVERWRITE; 5910 5911 scsi_cmd->allow_overwrite = allow_overwrite; 5912 scsi_cmd->partition = partition; 5913 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5914 5915 cam_fill_csio(csio, 5916 retries, 5917 cbfcnp, 5918 CAM_DIR_NONE, 5919 tag_action, 5920 /*data_ptr*/ NULL, 5921 /*dxfer_len*/ 0, 5922 sense_len, 5923 sizeof(*scsi_cmd), 5924 timeout); 5925 } 5926