scsi_sa.c revision 317963
1/*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * Copyright (c) 2013, 2014, 2015 Spectra Logic Corporation 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: stable/11/sys/cam/scsi/scsi_sa.c 317963 2017-05-08 17:55:49Z ken $"); 32 33#include <sys/param.h> 34#include <sys/queue.h> 35#ifdef _KERNEL 36#include <sys/systm.h> 37#include <sys/kernel.h> 38#endif 39#include <sys/types.h> 40#include <sys/time.h> 41#include <sys/bio.h> 42#include <sys/limits.h> 43#include <sys/malloc.h> 44#include <sys/mtio.h> 45#ifdef _KERNEL 46#include <sys/conf.h> 47#include <sys/sbuf.h> 48#include <sys/sysctl.h> 49#include <sys/taskqueue.h> 50#endif 51#include <sys/fcntl.h> 52#include <sys/devicestat.h> 53 54#ifndef _KERNEL 55#include <stdio.h> 56#include <string.h> 57#endif 58 59#include <cam/cam.h> 60#include <cam/cam_ccb.h> 61#include <cam/cam_periph.h> 62#include <cam/cam_xpt_periph.h> 63#include <cam/cam_debug.h> 64 65#include <cam/scsi/scsi_all.h> 66#include <cam/scsi/scsi_message.h> 67#include <cam/scsi/scsi_sa.h> 68 69#ifdef _KERNEL 70 71#include <opt_sa.h> 72 73#ifndef SA_IO_TIMEOUT 74#define SA_IO_TIMEOUT 32 75#endif 76#ifndef SA_SPACE_TIMEOUT 77#define SA_SPACE_TIMEOUT 1 * 60 78#endif 79#ifndef SA_REWIND_TIMEOUT 80#define SA_REWIND_TIMEOUT 2 * 60 81#endif 82#ifndef SA_ERASE_TIMEOUT 83#define SA_ERASE_TIMEOUT 4 * 60 84#endif 85#ifndef SA_REP_DENSITY_TIMEOUT 86#define SA_REP_DENSITY_TIMEOUT 90 87#endif 88 89#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 90 91#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 92#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 93#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 94#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 95#define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000) 96 97/* 98 * Additional options that can be set for config: SA_1FM_AT_EOT 99 */ 100 101#ifndef UNUSED_PARAMETER 102#define UNUSED_PARAMETER(x) x = x 103#endif 104 105#define QFRLS(ccb) \ 106 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 107 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 108 109/* 110 * Driver states 111 */ 112 113static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 114 115typedef enum { 116 SA_STATE_NORMAL, SA_STATE_ABNORMAL 117} sa_state; 118 119#define ccb_pflags ppriv_field0 120#define ccb_bp ppriv_ptr1 121 122/* bits in ccb_pflags */ 123#define SA_POSITION_UPDATED 0x1 124 125 126typedef enum { 127 SA_FLAG_OPEN = 0x0001, 128 SA_FLAG_FIXED = 0x0002, 129 SA_FLAG_TAPE_LOCKED = 0x0004, 130 SA_FLAG_TAPE_MOUNTED = 0x0008, 131 SA_FLAG_TAPE_WP = 0x0010, 132 SA_FLAG_TAPE_WRITTEN = 0x0020, 133 SA_FLAG_EOM_PENDING = 0x0040, 134 SA_FLAG_EIO_PENDING = 0x0080, 135 SA_FLAG_EOF_PENDING = 0x0100, 136 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 137 SA_FLAG_EOF_PENDING), 138 SA_FLAG_INVALID = 0x0200, 139 SA_FLAG_COMP_ENABLED = 0x0400, 140 SA_FLAG_COMP_SUPP = 0x0800, 141 SA_FLAG_COMP_UNSUPP = 0x1000, 142 SA_FLAG_TAPE_FROZEN = 0x2000, 143 SA_FLAG_PROTECT_SUPP = 0x4000, 144 145 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED| 146 SA_FLAG_COMP_UNSUPP), 147 SA_FLAG_SCTX_INIT = 0x8000 148} sa_flags; 149 150typedef enum { 151 SA_MODE_REWIND = 0x00, 152 SA_MODE_NOREWIND = 0x01, 153 SA_MODE_OFFLINE = 0x02 154} sa_mode; 155 156typedef enum { 157 SA_PARAM_NONE = 0x000, 158 SA_PARAM_BLOCKSIZE = 0x001, 159 SA_PARAM_DENSITY = 0x002, 160 SA_PARAM_COMPRESSION = 0x004, 161 SA_PARAM_BUFF_MODE = 0x008, 162 SA_PARAM_NUMBLOCKS = 0x010, 163 SA_PARAM_WP = 0x020, 164 SA_PARAM_SPEED = 0x040, 165 SA_PARAM_DENSITY_EXT = 0x080, 166 SA_PARAM_LBP = 0x100, 167 SA_PARAM_ALL = 0x1ff 168} sa_params; 169 170typedef enum { 171 SA_QUIRK_NONE = 0x000, 172 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/ 173 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */ 174 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */ 175 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */ 176 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */ 177 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */ 178 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */ 179 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */ 180 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */ 181} sa_quirks; 182 183#define SA_QUIRK_BIT_STRING \ 184 "\020" \ 185 "\001NOCOMP" \ 186 "\002FIXED" \ 187 "\003VARIABLE" \ 188 "\0042FM" \ 189 "\0051FM" \ 190 "\006NODREAD" \ 191 "\007NO_MODESEL" \ 192 "\010NO_CPAGE" \ 193 "\011NO_LONG_POS" 194 195#define SAMODE(z) (dev2unit(z) & 0x3) 196#define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 197 198#define SA_NOT_CTLDEV 0 199#define SA_CTLDEV 1 200 201#define SA_ATYPE_R 0 202#define SA_ATYPE_NR 1 203#define SA_ATYPE_ER 2 204#define SA_NUM_ATYPES 3 205 206#define SAMINOR(ctl, access) \ 207 ((ctl << 4) | (access & 0x3)) 208 209struct sa_devs { 210 struct cdev *ctl_dev; 211 struct cdev *r_dev; 212 struct cdev *nr_dev; 213 struct cdev *er_dev; 214}; 215 216#define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \ 217 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \ 218 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \ 219 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name); 220 221#define SASBADDINT(sb, indent, data, fmt, name) \ 222 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 223 NULL) 224 225#define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \ 226 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \ 227 desc) 228 229#define SASBADDUINT(sb, indent, data, fmt, name) \ 230 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 231 NULL) 232 233#define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \ 234 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \ 235 desc) 236 237#define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \ 238 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 239 NULL) 240 241#define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \ 242 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \ 243 desc) 244 245#define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \ 246 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL) 247 248#define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \ 249 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc) 250 251#define SASBADDNODE(sb, indent, name) { \ 252 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \ 253 "node"); \ 254 indent += 2; \ 255} 256 257#define SASBADDNODENUM(sb, indent, name, num) { \ 258 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \ 259 #name, "node", num); \ 260 indent += 2; \ 261} 262 263#define SASBENDNODE(sb, indent, name) { \ 264 indent -= 2; \ 265 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \ 266} 267 268#define SA_DENSITY_TYPES 4 269 270struct sa_prot_state { 271 int initialized; 272 uint32_t prot_method; 273 uint32_t pi_length; 274 uint32_t lbp_w; 275 uint32_t lbp_r; 276 uint32_t rbdp; 277}; 278 279struct sa_prot_info { 280 struct sa_prot_state cur_prot_state; 281 struct sa_prot_state pending_prot_state; 282}; 283 284/* 285 * A table mapping protection parameters to their types and values. 286 */ 287struct sa_prot_map { 288 char *name; 289 mt_param_set_type param_type; 290 off_t offset; 291 uint32_t min_val; 292 uint32_t max_val; 293 uint32_t *value; 294} sa_prot_table[] = { 295 { "prot_method", MT_PARAM_SET_UNSIGNED, 296 __offsetof(struct sa_prot_state, prot_method), 297 /*min_val*/ 0, /*max_val*/ 255, NULL }, 298 { "pi_length", MT_PARAM_SET_UNSIGNED, 299 __offsetof(struct sa_prot_state, pi_length), 300 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL }, 301 { "lbp_w", MT_PARAM_SET_UNSIGNED, 302 __offsetof(struct sa_prot_state, lbp_w), 303 /*min_val*/ 0, /*max_val*/ 1, NULL }, 304 { "lbp_r", MT_PARAM_SET_UNSIGNED, 305 __offsetof(struct sa_prot_state, lbp_r), 306 /*min_val*/ 0, /*max_val*/ 1, NULL }, 307 { "rbdp", MT_PARAM_SET_UNSIGNED, 308 __offsetof(struct sa_prot_state, rbdp), 309 /*min_val*/ 0, /*max_val*/ 1, NULL } 310}; 311 312#define SA_NUM_PROT_ENTS nitems(sa_prot_table) 313 314#define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 315 && (softc->prot_info.cur_prot_state.initialized != 0) \ 316 && (softc->prot_info.cur_prot_state.prot_method != 0)) 317 318#define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 319 320struct sa_softc { 321 sa_state state; 322 sa_flags flags; 323 sa_quirks quirks; 324 u_int si_flags; 325 struct cam_periph *periph; 326 struct bio_queue_head bio_queue; 327 int queue_count; 328 struct devstat *device_stats; 329 struct sa_devs devs; 330 int open_count; 331 int num_devs_to_destroy; 332 int blk_gran; 333 int blk_mask; 334 int blk_shift; 335 u_int32_t max_blk; 336 u_int32_t min_blk; 337 u_int32_t maxio; 338 u_int32_t cpi_maxio; 339 int allow_io_split; 340 int inject_eom; 341 int set_pews_status; 342 u_int32_t comp_algorithm; 343 u_int32_t saved_comp_algorithm; 344 u_int32_t media_blksize; 345 u_int32_t last_media_blksize; 346 u_int32_t media_numblks; 347 u_int8_t media_density; 348 u_int8_t speed; 349 u_int8_t scsi_rev; 350 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 351 int buffer_mode; 352 int filemarks; 353 union ccb saved_ccb; 354 int last_resid_was_io; 355 uint8_t density_type_bits[SA_DENSITY_TYPES]; 356 int density_info_valid[SA_DENSITY_TYPES]; 357 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 358 359 struct sa_prot_info prot_info; 360 361 int sili; 362 int eot_warn; 363 364 /* 365 * Current position information. -1 means that the given value is 366 * unknown. fileno and blkno are always calculated. blkno is 367 * relative to the previous file mark. rep_fileno and rep_blkno 368 * are as reported by the drive, if it supports the long form 369 * report for the READ POSITION command. rep_blkno is relative to 370 * the beginning of the partition. 371 * 372 * bop means that the drive is at the beginning of the partition. 373 * eop means that the drive is between early warning and end of 374 * partition, inside the current partition. 375 * bpew means that the position is in a PEWZ (Programmable Early 376 * Warning Zone) 377 */ 378 daddr_t partition; /* Absolute from BOT */ 379 daddr_t fileno; /* Relative to beginning of partition */ 380 daddr_t blkno; /* Relative to last file mark */ 381 daddr_t rep_blkno; /* Relative to beginning of partition */ 382 daddr_t rep_fileno; /* Relative to beginning of partition */ 383 int bop; /* Beginning of Partition */ 384 int eop; /* End of Partition */ 385 int bpew; /* Beyond Programmable Early Warning */ 386 387 /* 388 * Latched Error Info 389 */ 390 struct { 391 struct scsi_sense_data _last_io_sense; 392 u_int64_t _last_io_resid; 393 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 394 struct scsi_sense_data _last_ctl_sense; 395 u_int64_t _last_ctl_resid; 396 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 397#define last_io_sense errinfo._last_io_sense 398#define last_io_resid errinfo._last_io_resid 399#define last_io_cdb errinfo._last_io_cdb 400#define last_ctl_sense errinfo._last_ctl_sense 401#define last_ctl_resid errinfo._last_ctl_resid 402#define last_ctl_cdb errinfo._last_ctl_cdb 403 } errinfo; 404 /* 405 * Misc other flags/state 406 */ 407 u_int32_t 408 : 29, 409 open_rdonly : 1, /* open read-only */ 410 open_pending_mount : 1, /* open pending mount */ 411 ctrl_mode : 1; /* control device open */ 412 413 struct task sysctl_task; 414 struct sysctl_ctx_list sysctl_ctx; 415 struct sysctl_oid *sysctl_tree; 416}; 417 418struct sa_quirk_entry { 419 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 420 sa_quirks quirks; /* specific quirk type */ 421 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 422}; 423 424static struct sa_quirk_entry sa_quirk_table[] = 425{ 426 { 427 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 428 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 429 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 430 }, 431 { 432 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 433 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 434 }, 435 { 436 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 437 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 438 }, 439 { 440 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 441 "Python*", "*"}, SA_QUIRK_NODREAD, 0 442 }, 443 { 444 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 445 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 446 }, 447 { 448 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 449 "VIPER 2525 25462", "-011"}, 450 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 451 }, 452 { 453 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 454 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 455 }, 456#if 0 457 { 458 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 459 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 460 }, 461#endif 462 { 463 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 464 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 465 }, 466 { 467 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 468 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 469 }, 470 { 471 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 472 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 473 }, 474 { 475 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 476 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 477 }, 478 { 479 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 480 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 481 }, 482 { 483 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 484 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 485 }, 486 { /* jreynold@primenet.com */ 487 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 488 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 489 }, 490 { /* mike@sentex.net */ 491 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 492 "STT20000*", "*"}, SA_QUIRK_1FM, 0 493 }, 494 { 495 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 496 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 497 }, 498 { 499 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 500 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 501 }, 502 { 503 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 504 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 505 }, 506 { 507 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 508 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 509 }, 510 { 511 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 512 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 513 }, 514 { 515 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 516 " SLR*", "*"}, SA_QUIRK_1FM, 0 517 }, 518 { 519 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 520 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 521 }, 522 { 523 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 524 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 525 } 526}; 527 528static d_open_t saopen; 529static d_close_t saclose; 530static d_strategy_t sastrategy; 531static d_ioctl_t saioctl; 532static periph_init_t sainit; 533static periph_ctor_t saregister; 534static periph_oninv_t saoninvalidate; 535static periph_dtor_t sacleanup; 536static periph_start_t sastart; 537static void saasync(void *callback_arg, u_int32_t code, 538 struct cam_path *path, void *arg); 539static void sadone(struct cam_periph *periph, 540 union ccb *start_ccb); 541static int saerror(union ccb *ccb, u_int32_t cam_flags, 542 u_int32_t sense_flags); 543static int samarkswanted(struct cam_periph *); 544static int sacheckeod(struct cam_periph *periph); 545static int sagetparams(struct cam_periph *periph, 546 sa_params params_to_get, 547 u_int32_t *blocksize, u_int8_t *density, 548 u_int32_t *numblocks, int *buff_mode, 549 u_int8_t *write_protect, u_int8_t *speed, 550 int *comp_supported, int *comp_enabled, 551 u_int32_t *comp_algorithm, 552 sa_comp_t *comp_page, 553 struct scsi_control_data_prot_subpage 554 *prot_page, int dp_size, 555 int prot_changeable); 556static int sasetprot(struct cam_periph *periph, 557 struct sa_prot_state *new_prot); 558static int sasetparams(struct cam_periph *periph, 559 sa_params params_to_set, 560 u_int32_t blocksize, u_int8_t density, 561 u_int32_t comp_algorithm, 562 u_int32_t sense_flags); 563static int sasetsili(struct cam_periph *periph, 564 struct mtparamset *ps, int num_params); 565static int saseteotwarn(struct cam_periph *periph, 566 struct mtparamset *ps, int num_params); 567static void safillprot(struct sa_softc *softc, int *indent, 568 struct sbuf *sb); 569static void sapopulateprots(struct sa_prot_state *cur_state, 570 struct sa_prot_map *new_table, 571 int table_ents); 572static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 573 int table_ents); 574static int sasetprotents(struct cam_periph *periph, 575 struct mtparamset *ps, int num_params); 576static struct sa_param_ent *safindparament(struct mtparamset *ps); 577static int saparamsetlist(struct cam_periph *periph, 578 struct mtsetlist *list, int need_copy); 579static int saextget(struct cdev *dev, struct cam_periph *periph, 580 struct sbuf *sb, struct mtextget *g); 581static int saparamget(struct sa_softc *softc, struct sbuf *sb); 582static void saprevent(struct cam_periph *periph, int action); 583static int sarewind(struct cam_periph *periph); 584static int saspace(struct cam_periph *periph, int count, 585 scsi_space_code code); 586static void sadevgonecb(void *arg); 587static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 588static int samount(struct cam_periph *, int, struct cdev *); 589static int saretension(struct cam_periph *periph); 590static int sareservereleaseunit(struct cam_periph *periph, 591 int reserve); 592static int saloadunload(struct cam_periph *periph, int load); 593static int saerase(struct cam_periph *periph, int longerase); 594static int sawritefilemarks(struct cam_periph *periph, 595 int nmarks, int setmarks, int immed); 596static int sagetpos(struct cam_periph *periph); 597static int sardpos(struct cam_periph *periph, int, u_int32_t *); 598static int sasetpos(struct cam_periph *periph, int, 599 struct mtlocate *); 600static void safilldenstypesb(struct sbuf *sb, int *indent, 601 uint8_t *buf, int buf_len, 602 int is_density); 603static void safilldensitysb(struct sa_softc *softc, int *indent, 604 struct sbuf *sb); 605 606 607#ifndef SA_DEFAULT_IO_SPLIT 608#define SA_DEFAULT_IO_SPLIT 0 609#endif 610 611static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 612 613/* 614 * Tunable to allow the user to set a global allow_io_split value. Note 615 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 616 * is bad behavior, because it hides the true tape block size from the 617 * application. 618 */ 619static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 620 "CAM Sequential Access Tape Driver"); 621SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN, 622 &sa_allow_io_split, 0, "Default I/O split value"); 623 624static struct periph_driver sadriver = 625{ 626 sainit, "sa", 627 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 628}; 629 630PERIPHDRIVER_DECLARE(sa, sadriver); 631 632/* For 2.2-stable support */ 633#ifndef D_TAPE 634#define D_TAPE 0 635#endif 636 637 638static struct cdevsw sa_cdevsw = { 639 .d_version = D_VERSION, 640 .d_open = saopen, 641 .d_close = saclose, 642 .d_read = physread, 643 .d_write = physwrite, 644 .d_ioctl = saioctl, 645 .d_strategy = sastrategy, 646 .d_name = "sa", 647 .d_flags = D_TAPE | D_TRACKCLOSE, 648}; 649 650static int 651saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 652{ 653 struct cam_periph *periph; 654 struct sa_softc *softc; 655 int error; 656 657 periph = (struct cam_periph *)dev->si_drv1; 658 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 659 return (ENXIO); 660 } 661 662 cam_periph_lock(periph); 663 664 softc = (struct sa_softc *)periph->softc; 665 666 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 667 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 668 669 if (SA_IS_CTRL(dev)) { 670 softc->ctrl_mode = 1; 671 softc->open_count++; 672 cam_periph_unlock(periph); 673 return (0); 674 } 675 676 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 677 cam_periph_unlock(periph); 678 cam_periph_release(periph); 679 return (error); 680 } 681 682 if (softc->flags & SA_FLAG_OPEN) { 683 error = EBUSY; 684 } else if (softc->flags & SA_FLAG_INVALID) { 685 error = ENXIO; 686 } else { 687 /* 688 * Preserve whether this is a read_only open. 689 */ 690 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 691 692 /* 693 * The function samount ensures media is loaded and ready. 694 * It also does a device RESERVE if the tape isn't yet mounted. 695 * 696 * If the mount fails and this was a non-blocking open, 697 * make this a 'open_pending_mount' action. 698 */ 699 error = samount(periph, flags, dev); 700 if (error && (flags & O_NONBLOCK)) { 701 softc->flags |= SA_FLAG_OPEN; 702 softc->open_pending_mount = 1; 703 softc->open_count++; 704 cam_periph_unhold(periph); 705 cam_periph_unlock(periph); 706 return (0); 707 } 708 } 709 710 if (error) { 711 cam_periph_unhold(periph); 712 cam_periph_unlock(periph); 713 cam_periph_release(periph); 714 return (error); 715 } 716 717 saprevent(periph, PR_PREVENT); 718 softc->flags |= SA_FLAG_OPEN; 719 softc->open_count++; 720 721 cam_periph_unhold(periph); 722 cam_periph_unlock(periph); 723 return (error); 724} 725 726static int 727saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 728{ 729 struct cam_periph *periph; 730 struct sa_softc *softc; 731 int mode, error, writing, tmp, i; 732 int closedbits = SA_FLAG_OPEN; 733 734 mode = SAMODE(dev); 735 periph = (struct cam_periph *)dev->si_drv1; 736 cam_periph_lock(periph); 737 738 softc = (struct sa_softc *)periph->softc; 739 740 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 741 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 742 743 744 softc->open_rdonly = 0; 745 if (SA_IS_CTRL(dev)) { 746 softc->ctrl_mode = 0; 747 softc->open_count--; 748 cam_periph_unlock(periph); 749 cam_periph_release(periph); 750 return (0); 751 } 752 753 if (softc->open_pending_mount) { 754 softc->flags &= ~SA_FLAG_OPEN; 755 softc->open_pending_mount = 0; 756 softc->open_count--; 757 cam_periph_unlock(periph); 758 cam_periph_release(periph); 759 return (0); 760 } 761 762 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 763 cam_periph_unlock(periph); 764 return (error); 765 } 766 767 /* 768 * Were we writing the tape? 769 */ 770 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 771 772 /* 773 * See whether or not we need to write filemarks. If this 774 * fails, we probably have to assume we've lost tape 775 * position. 776 */ 777 error = sacheckeod(periph); 778 if (error) { 779 xpt_print(periph->path, 780 "failed to write terminating filemark(s)\n"); 781 softc->flags |= SA_FLAG_TAPE_FROZEN; 782 } 783 784 /* 785 * Whatever we end up doing, allow users to eject tapes from here on. 786 */ 787 saprevent(periph, PR_ALLOW); 788 789 /* 790 * Decide how to end... 791 */ 792 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 793 closedbits |= SA_FLAG_TAPE_FROZEN; 794 } else switch (mode) { 795 case SA_MODE_OFFLINE: 796 /* 797 * An 'offline' close is an unconditional release of 798 * frozen && mount conditions, irrespective of whether 799 * these operations succeeded. The reason for this is 800 * to allow at least some kind of programmatic way 801 * around our state getting all fouled up. If somebody 802 * issues an 'offline' command, that will be allowed 803 * to clear state. 804 */ 805 (void) sarewind(periph); 806 (void) saloadunload(periph, FALSE); 807 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 808 break; 809 case SA_MODE_REWIND: 810 /* 811 * If the rewind fails, return an error- if anyone cares, 812 * but not overwriting any previous error. 813 * 814 * We don't clear the notion of mounted here, but we do 815 * clear the notion of frozen if we successfully rewound. 816 */ 817 tmp = sarewind(periph); 818 if (tmp) { 819 if (error != 0) 820 error = tmp; 821 } else { 822 closedbits |= SA_FLAG_TAPE_FROZEN; 823 } 824 break; 825 case SA_MODE_NOREWIND: 826 /* 827 * If we're not rewinding/unloading the tape, find out 828 * whether we need to back up over one of two filemarks 829 * we wrote (if we wrote two filemarks) so that appends 830 * from this point on will be sane. 831 */ 832 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 833 tmp = saspace(periph, -1, SS_FILEMARKS); 834 if (tmp) { 835 xpt_print(periph->path, "unable to backspace " 836 "over one of double filemarks at end of " 837 "tape\n"); 838 xpt_print(periph->path, "it is possible that " 839 "this device needs a SA_QUIRK_1FM quirk set" 840 "for it\n"); 841 softc->flags |= SA_FLAG_TAPE_FROZEN; 842 } 843 } 844 break; 845 default: 846 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 847 /* NOTREACHED */ 848 break; 849 } 850 851 /* 852 * We wish to note here that there are no more filemarks to be written. 853 */ 854 softc->filemarks = 0; 855 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 856 857 /* 858 * And we are no longer open for business. 859 */ 860 softc->flags &= ~closedbits; 861 softc->open_count--; 862 863 /* 864 * Invalidate any density information that depends on having tape 865 * media in the drive. 866 */ 867 for (i = 0; i < SA_DENSITY_TYPES; i++) { 868 if (softc->density_type_bits[i] & SRDS_MEDIA) 869 softc->density_info_valid[i] = 0; 870 } 871 872 /* 873 * Inform users if tape state if frozen.... 874 */ 875 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 876 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 877 "REWIND or MTEOM command to clear this state.\n"); 878 } 879 880 /* release the device if it is no longer mounted */ 881 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 882 sareservereleaseunit(periph, FALSE); 883 884 cam_periph_unhold(periph); 885 cam_periph_unlock(periph); 886 cam_periph_release(periph); 887 888 return (error); 889} 890 891/* 892 * Actually translate the requested transfer into one the physical driver 893 * can understand. The transfer is described by a buf and will include 894 * only one physical transfer. 895 */ 896static void 897sastrategy(struct bio *bp) 898{ 899 struct cam_periph *periph; 900 struct sa_softc *softc; 901 902 bp->bio_resid = bp->bio_bcount; 903 if (SA_IS_CTRL(bp->bio_dev)) { 904 biofinish(bp, NULL, EINVAL); 905 return; 906 } 907 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 908 cam_periph_lock(periph); 909 910 softc = (struct sa_softc *)periph->softc; 911 912 if (softc->flags & SA_FLAG_INVALID) { 913 cam_periph_unlock(periph); 914 biofinish(bp, NULL, ENXIO); 915 return; 916 } 917 918 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 919 cam_periph_unlock(periph); 920 biofinish(bp, NULL, EPERM); 921 return; 922 } 923 924 /* 925 * This should actually never occur as the write(2) 926 * system call traps attempts to write to a read-only 927 * file descriptor. 928 */ 929 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 930 cam_periph_unlock(periph); 931 biofinish(bp, NULL, EBADF); 932 return; 933 } 934 935 if (softc->open_pending_mount) { 936 int error = samount(periph, 0, bp->bio_dev); 937 if (error) { 938 cam_periph_unlock(periph); 939 biofinish(bp, NULL, ENXIO); 940 return; 941 } 942 saprevent(periph, PR_PREVENT); 943 softc->open_pending_mount = 0; 944 } 945 946 947 /* 948 * If it's a null transfer, return immediately 949 */ 950 if (bp->bio_bcount == 0) { 951 cam_periph_unlock(periph); 952 biodone(bp); 953 return; 954 } 955 956 /* valid request? */ 957 if (softc->flags & SA_FLAG_FIXED) { 958 /* 959 * Fixed block device. The byte count must 960 * be a multiple of our block size. 961 */ 962 if (((softc->blk_mask != ~0) && 963 ((bp->bio_bcount & softc->blk_mask) != 0)) || 964 ((softc->blk_mask == ~0) && 965 ((bp->bio_bcount % softc->min_blk) != 0))) { 966 xpt_print(periph->path, "Invalid request. Fixed block " 967 "device requests must be a multiple of %d bytes\n", 968 softc->min_blk); 969 cam_periph_unlock(periph); 970 biofinish(bp, NULL, EINVAL); 971 return; 972 } 973 } else if ((bp->bio_bcount > softc->max_blk) || 974 (bp->bio_bcount < softc->min_blk) || 975 (bp->bio_bcount & softc->blk_mask) != 0) { 976 977 xpt_print_path(periph->path); 978 printf("Invalid request. Variable block " 979 "device requests must be "); 980 if (softc->blk_mask != 0) { 981 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 982 } 983 printf("between %d and %d bytes\n", softc->min_blk, 984 softc->max_blk); 985 cam_periph_unlock(periph); 986 biofinish(bp, NULL, EINVAL); 987 return; 988 } 989 990 /* 991 * Place it at the end of the queue. 992 */ 993 bioq_insert_tail(&softc->bio_queue, bp); 994 softc->queue_count++; 995#if 0 996 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 997 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 998 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 999 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1000#endif 1001 if (softc->queue_count > 1) { 1002 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1003 ("sastrategy: queue count now %d\n", softc->queue_count)); 1004 } 1005 1006 /* 1007 * Schedule ourselves for performing the work. 1008 */ 1009 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1010 cam_periph_unlock(periph); 1011 1012 return; 1013} 1014 1015static int 1016sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1017{ 1018 uint32_t sili_blocksize; 1019 struct sa_softc *softc; 1020 int error; 1021 1022 error = 0; 1023 softc = (struct sa_softc *)periph->softc; 1024 1025 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1026 snprintf(ps->error_str, sizeof(ps->error_str), 1027 "sili is a signed parameter"); 1028 goto bailout; 1029 } 1030 if ((ps->value.value_signed < 0) 1031 || (ps->value.value_signed > 1)) { 1032 snprintf(ps->error_str, sizeof(ps->error_str), 1033 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1034 goto bailout_error; 1035 } 1036 /* 1037 * We only set the SILI flag in variable block 1038 * mode. You'll get a check condition in fixed 1039 * block mode if things don't line up in any case. 1040 */ 1041 if (softc->flags & SA_FLAG_FIXED) { 1042 snprintf(ps->error_str, sizeof(ps->error_str), 1043 "can't set sili bit in fixed block mode"); 1044 goto bailout_error; 1045 } 1046 if (softc->sili == ps->value.value_signed) 1047 goto bailout; 1048 1049 if (ps->value.value_signed == 1) 1050 sili_blocksize = 4; 1051 else 1052 sili_blocksize = 0; 1053 1054 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1055 sili_blocksize, 0, 0, SF_QUIET_IR); 1056 if (error != 0) { 1057 snprintf(ps->error_str, sizeof(ps->error_str), 1058 "sasetparams() returned error %d", error); 1059 goto bailout_error; 1060 } 1061 1062 softc->sili = ps->value.value_signed; 1063 1064bailout: 1065 ps->status = MT_PARAM_STATUS_OK; 1066 return (error); 1067 1068bailout_error: 1069 ps->status = MT_PARAM_STATUS_ERROR; 1070 if (error == 0) 1071 error = EINVAL; 1072 1073 return (error); 1074} 1075 1076static int 1077saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1078{ 1079 struct sa_softc *softc; 1080 int error; 1081 1082 error = 0; 1083 softc = (struct sa_softc *)periph->softc; 1084 1085 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1086 snprintf(ps->error_str, sizeof(ps->error_str), 1087 "eot_warn is a signed parameter"); 1088 ps->status = MT_PARAM_STATUS_ERROR; 1089 goto bailout; 1090 } 1091 if ((ps->value.value_signed < 0) 1092 || (ps->value.value_signed > 1)) { 1093 snprintf(ps->error_str, sizeof(ps->error_str), 1094 "invalid eot_warn value %jd\n", 1095 (intmax_t)ps->value.value_signed); 1096 ps->status = MT_PARAM_STATUS_ERROR; 1097 goto bailout; 1098 } 1099 softc->eot_warn = ps->value.value_signed; 1100 ps->status = MT_PARAM_STATUS_OK; 1101bailout: 1102 if (ps->status != MT_PARAM_STATUS_OK) 1103 error = EINVAL; 1104 1105 return (error); 1106} 1107 1108 1109static void 1110safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1111{ 1112 int tmpint; 1113 1114 SASBADDNODE(sb, *indent, protection); 1115 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1116 tmpint = 1; 1117 else 1118 tmpint = 0; 1119 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1120 "Set to 1 if protection information is supported"); 1121 1122 if ((tmpint != 0) 1123 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1124 struct sa_prot_state *prot; 1125 1126 prot = &softc->prot_info.cur_prot_state; 1127 1128 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1129 prot_method, "Current Protection Method"); 1130 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1131 pi_length, "Length of Protection Information"); 1132 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1133 lbp_w, "Check Protection on Writes"); 1134 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1135 lbp_r, "Check and Include Protection on Reads"); 1136 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1137 rbdp, "Transfer Protection Information for RECOVER " 1138 "BUFFERED DATA command"); 1139 } 1140 SASBENDNODE(sb, *indent, protection); 1141} 1142 1143static void 1144sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1145 int table_ents) 1146{ 1147 int i; 1148 1149 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1150 sizeof(sa_prot_table))); 1151 1152 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1153 1154 for (i = 0; i < table_ents; i++) 1155 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1156 new_table[i].offset); 1157 1158 return; 1159} 1160 1161static struct sa_prot_map * 1162safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1163{ 1164 char *prot_name = "protection."; 1165 int i, prot_len; 1166 1167 prot_len = strlen(prot_name); 1168 1169 /* 1170 * This shouldn't happen, but we check just in case. 1171 */ 1172 if (strncmp(name, prot_name, prot_len) != 0) 1173 goto bailout; 1174 1175 for (i = 0; i < table_ents; i++) { 1176 if (strcmp(&name[prot_len], table[i].name) != 0) 1177 continue; 1178 return (&table[i]); 1179 } 1180bailout: 1181 return (NULL); 1182} 1183 1184static int 1185sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1186{ 1187 struct sa_softc *softc; 1188 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1189 struct sa_prot_state new_state; 1190 int error; 1191 int i; 1192 1193 softc = (struct sa_softc *)periph->softc; 1194 error = 0; 1195 1196 /* 1197 * Make sure that this tape drive supports protection information. 1198 * Otherwise we can't set anything. 1199 */ 1200 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1201 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1202 "Protection information is not supported for this device"); 1203 ps[0].status = MT_PARAM_STATUS_ERROR; 1204 goto bailout; 1205 } 1206 1207 /* 1208 * We can't operate with physio(9) splitting enabled, because there 1209 * is no way to insure (especially in variable block mode) that 1210 * what the user writes (with a checksum block at the end) will 1211 * make it into the sa(4) driver intact. 1212 */ 1213 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1214 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1215 "Protection information cannot be enabled with I/O " 1216 "splitting"); 1217 ps[0].status = MT_PARAM_STATUS_ERROR; 1218 goto bailout; 1219 } 1220 1221 /* 1222 * Take the current cached protection state and use that as the 1223 * basis for our new entries. 1224 */ 1225 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1226 1227 /* 1228 * Populate the table mapping property names to pointers into the 1229 * state structure. 1230 */ 1231 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1232 1233 /* 1234 * For each parameter the user passed in, make sure the name, type 1235 * and value are valid. 1236 */ 1237 for (i = 0; i < num_params; i++) { 1238 struct sa_prot_map *ent; 1239 1240 ent = safindprotent(ps[i].value_name, prot_ents, 1241 SA_NUM_PROT_ENTS); 1242 if (ent == NULL) { 1243 ps[i].status = MT_PARAM_STATUS_ERROR; 1244 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1245 "Invalid protection entry name %s", 1246 ps[i].value_name); 1247 error = EINVAL; 1248 goto bailout; 1249 } 1250 if (ent->param_type != ps[i].value_type) { 1251 ps[i].status = MT_PARAM_STATUS_ERROR; 1252 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1253 "Supplied type %d does not match actual type %d", 1254 ps[i].value_type, ent->param_type); 1255 error = EINVAL; 1256 goto bailout; 1257 } 1258 if ((ps[i].value.value_unsigned < ent->min_val) 1259 || (ps[i].value.value_unsigned > ent->max_val)) { 1260 ps[i].status = MT_PARAM_STATUS_ERROR; 1261 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1262 "Value %ju is outside valid range %u - %u", 1263 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1264 ent->max_val); 1265 error = EINVAL; 1266 goto bailout; 1267 } 1268 *(ent->value) = ps[i].value.value_unsigned; 1269 } 1270 1271 /* 1272 * Actually send the protection settings to the drive. 1273 */ 1274 error = sasetprot(periph, &new_state); 1275 if (error != 0) { 1276 for (i = 0; i < num_params; i++) { 1277 ps[i].status = MT_PARAM_STATUS_ERROR; 1278 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1279 "Unable to set parameter, see dmesg(8)"); 1280 } 1281 goto bailout; 1282 } 1283 1284 /* 1285 * Let the user know that his settings were stored successfully. 1286 */ 1287 for (i = 0; i < num_params; i++) 1288 ps[i].status = MT_PARAM_STATUS_OK; 1289 1290bailout: 1291 return (error); 1292} 1293/* 1294 * Entry handlers generally only handle a single entry. Node handlers will 1295 * handle a contiguous range of parameters to set in a single call. 1296 */ 1297typedef enum { 1298 SA_PARAM_TYPE_ENTRY, 1299 SA_PARAM_TYPE_NODE 1300} sa_param_type; 1301 1302struct sa_param_ent { 1303 char *name; 1304 sa_param_type param_type; 1305 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1306 int num_params); 1307} sa_param_table[] = { 1308 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1309 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1310 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1311}; 1312 1313static struct sa_param_ent * 1314safindparament(struct mtparamset *ps) 1315{ 1316 unsigned int i; 1317 1318 for (i = 0; i < nitems(sa_param_table); i++){ 1319 /* 1320 * For entries, we compare all of the characters. For 1321 * nodes, we only compare the first N characters. The node 1322 * handler will decode the rest. 1323 */ 1324 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1325 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1326 continue; 1327 } else { 1328 if (strncmp(ps->value_name, sa_param_table[i].name, 1329 strlen(sa_param_table[i].name)) != 0) 1330 continue; 1331 } 1332 return (&sa_param_table[i]); 1333 } 1334 1335 return (NULL); 1336} 1337 1338/* 1339 * Go through a list of parameters, coalescing contiguous parameters with 1340 * the same parent node into a single call to a set_func. 1341 */ 1342static int 1343saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1344 int need_copy) 1345{ 1346 int i, contig_ents; 1347 int error; 1348 struct mtparamset *params, *first; 1349 struct sa_param_ent *first_ent; 1350 1351 error = 0; 1352 params = NULL; 1353 1354 if (list->num_params == 0) 1355 /* Nothing to do */ 1356 goto bailout; 1357 1358 /* 1359 * Verify that the user has the correct structure size. 1360 */ 1361 if ((list->num_params * sizeof(struct mtparamset)) != 1362 list->param_len) { 1363 xpt_print(periph->path, "%s: length of params %d != " 1364 "sizeof(struct mtparamset) %zd * num_params %d\n", 1365 __func__, list->param_len, sizeof(struct mtparamset), 1366 list->num_params); 1367 error = EINVAL; 1368 goto bailout; 1369 } 1370 1371 if (need_copy != 0) { 1372 /* 1373 * XXX KDM will dropping the lock cause an issue here? 1374 */ 1375 cam_periph_unlock(periph); 1376 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1377 error = copyin(list->params, params, list->param_len); 1378 cam_periph_lock(periph); 1379 1380 if (error != 0) 1381 goto bailout; 1382 } else { 1383 params = list->params; 1384 } 1385 1386 contig_ents = 0; 1387 first = NULL; 1388 first_ent = NULL; 1389 for (i = 0; i < list->num_params; i++) { 1390 struct sa_param_ent *ent; 1391 1392 ent = safindparament(¶ms[i]); 1393 if (ent == NULL) { 1394 snprintf(params[i].error_str, 1395 sizeof(params[i].error_str), 1396 "%s: cannot find parameter %s", __func__, 1397 params[i].value_name); 1398 params[i].status = MT_PARAM_STATUS_ERROR; 1399 break; 1400 } 1401 1402 if (first != NULL) { 1403 if (first_ent == ent) { 1404 /* 1405 * We're still in a contiguous list of 1406 * parameters that can be handled by one 1407 * node handler. 1408 */ 1409 contig_ents++; 1410 continue; 1411 } else { 1412 error = first_ent->set_func(periph, first, 1413 contig_ents); 1414 first = NULL; 1415 first_ent = NULL; 1416 contig_ents = 0; 1417 if (error != 0) { 1418 error = 0; 1419 break; 1420 } 1421 } 1422 } 1423 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1424 first = ¶ms[i]; 1425 first_ent = ent; 1426 contig_ents = 1; 1427 } else { 1428 error = ent->set_func(periph, ¶ms[i], 1); 1429 if (error != 0) { 1430 error = 0; 1431 break; 1432 } 1433 } 1434 } 1435 if (first != NULL) 1436 first_ent->set_func(periph, first, contig_ents); 1437 1438bailout: 1439 if (need_copy != 0) { 1440 if (error != EFAULT) { 1441 cam_periph_unlock(periph); 1442 copyout(params, list->params, list->param_len); 1443 cam_periph_lock(periph); 1444 } 1445 free(params, M_SCSISA); 1446 } 1447 return (error); 1448} 1449 1450static int 1451sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1452{ 1453 struct sa_softc *softc; 1454 u_int8_t write_protect; 1455 int comp_enabled, comp_supported, error; 1456 1457 softc = (struct sa_softc *)periph->softc; 1458 1459 if (softc->open_pending_mount) 1460 return (0); 1461 1462 /* The control device may issue getparams() if there are no opens. */ 1463 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1464 return (0); 1465 1466 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1467 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1468 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1469 &softc->comp_algorithm, NULL, NULL, 0, 0); 1470 if (error) 1471 return (error); 1472 if (write_protect) 1473 softc->flags |= SA_FLAG_TAPE_WP; 1474 else 1475 softc->flags &= ~SA_FLAG_TAPE_WP; 1476 softc->flags &= ~SA_FLAG_COMPRESSION; 1477 if (comp_supported) { 1478 if (softc->saved_comp_algorithm == 0) 1479 softc->saved_comp_algorithm = 1480 softc->comp_algorithm; 1481 softc->flags |= SA_FLAG_COMP_SUPP; 1482 if (comp_enabled) 1483 softc->flags |= SA_FLAG_COMP_ENABLED; 1484 } else 1485 softc->flags |= SA_FLAG_COMP_UNSUPP; 1486 1487 return (0); 1488} 1489 1490#define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1491 if (softc->open_pending_mount) { \ 1492 error = samount(periph, 0, dev); \ 1493 if (error) { \ 1494 break; \ 1495 } \ 1496 saprevent(periph, PR_PREVENT); \ 1497 softc->open_pending_mount = 0; \ 1498 } 1499 1500static int 1501saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1502{ 1503 struct cam_periph *periph; 1504 struct sa_softc *softc; 1505 scsi_space_code spaceop; 1506 int didlockperiph = 0; 1507 int mode; 1508 int error = 0; 1509 1510 mode = SAMODE(dev); 1511 error = 0; /* shut up gcc */ 1512 spaceop = 0; /* shut up gcc */ 1513 1514 periph = (struct cam_periph *)dev->si_drv1; 1515 cam_periph_lock(periph); 1516 softc = (struct sa_softc *)periph->softc; 1517 1518 /* 1519 * Check for control mode accesses. We allow MTIOCGET and 1520 * MTIOCERRSTAT (but need to be the only one open in order 1521 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1522 * and MTCOMP (but need to be the only one accessing this 1523 * device to run those). 1524 */ 1525 1526 if (SA_IS_CTRL(dev)) { 1527 switch (cmd) { 1528 case MTIOCGETEOTMODEL: 1529 case MTIOCGET: 1530 case MTIOCEXTGET: 1531 case MTIOCPARAMGET: 1532 case MTIOCRBLIM: 1533 break; 1534 case MTIOCERRSTAT: 1535 /* 1536 * If the periph isn't already locked, lock it 1537 * so our MTIOCERRSTAT can reset latched error stats. 1538 * 1539 * If the periph is already locked, skip it because 1540 * we're just getting status and it'll be up to the 1541 * other thread that has this device open to do 1542 * an MTIOCERRSTAT that would clear latched status. 1543 */ 1544 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1545 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1546 if (error != 0) { 1547 cam_periph_unlock(periph); 1548 return (error); 1549 } 1550 didlockperiph = 1; 1551 } 1552 break; 1553 1554 case MTIOCTOP: 1555 { 1556 struct mtop *mt = (struct mtop *) arg; 1557 1558 /* 1559 * Check to make sure it's an OP we can perform 1560 * with no media inserted. 1561 */ 1562 switch (mt->mt_op) { 1563 case MTSETBSIZ: 1564 case MTSETDNSTY: 1565 case MTCOMP: 1566 mt = NULL; 1567 /* FALLTHROUGH */ 1568 default: 1569 break; 1570 } 1571 if (mt != NULL) { 1572 break; 1573 } 1574 /* FALLTHROUGH */ 1575 } 1576 case MTIOCSETEOTMODEL: 1577 /* 1578 * We need to acquire the peripheral here rather 1579 * than at open time because we are sharing writable 1580 * access to data structures. 1581 */ 1582 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1583 if (error != 0) { 1584 cam_periph_unlock(periph); 1585 return (error); 1586 } 1587 didlockperiph = 1; 1588 break; 1589 1590 default: 1591 cam_periph_unlock(periph); 1592 return (EINVAL); 1593 } 1594 } 1595 1596 /* 1597 * Find the device that the user is talking about 1598 */ 1599 switch (cmd) { 1600 case MTIOCGET: 1601 { 1602 struct mtget *g = (struct mtget *)arg; 1603 1604 error = sagetparams_common(dev, periph); 1605 if (error) 1606 break; 1607 bzero(g, sizeof(struct mtget)); 1608 g->mt_type = MT_ISAR; 1609 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1610 g->mt_comp = MT_COMP_UNSUPP; 1611 g->mt_comp0 = MT_COMP_UNSUPP; 1612 g->mt_comp1 = MT_COMP_UNSUPP; 1613 g->mt_comp2 = MT_COMP_UNSUPP; 1614 g->mt_comp3 = MT_COMP_UNSUPP; 1615 } else { 1616 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1617 g->mt_comp = MT_COMP_DISABLED; 1618 } else { 1619 g->mt_comp = softc->comp_algorithm; 1620 } 1621 g->mt_comp0 = softc->comp_algorithm; 1622 g->mt_comp1 = softc->comp_algorithm; 1623 g->mt_comp2 = softc->comp_algorithm; 1624 g->mt_comp3 = softc->comp_algorithm; 1625 } 1626 g->mt_density = softc->media_density; 1627 g->mt_density0 = softc->media_density; 1628 g->mt_density1 = softc->media_density; 1629 g->mt_density2 = softc->media_density; 1630 g->mt_density3 = softc->media_density; 1631 g->mt_blksiz = softc->media_blksize; 1632 g->mt_blksiz0 = softc->media_blksize; 1633 g->mt_blksiz1 = softc->media_blksize; 1634 g->mt_blksiz2 = softc->media_blksize; 1635 g->mt_blksiz3 = softc->media_blksize; 1636 g->mt_fileno = softc->fileno; 1637 g->mt_blkno = softc->blkno; 1638 g->mt_dsreg = (short) softc->dsreg; 1639 /* 1640 * Yes, we know that this is likely to overflow 1641 */ 1642 if (softc->last_resid_was_io) { 1643 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1644 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1645 softc->last_io_resid = 0; 1646 } 1647 } 1648 } else { 1649 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1650 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1651 softc->last_ctl_resid = 0; 1652 } 1653 } 1654 } 1655 error = 0; 1656 break; 1657 } 1658 case MTIOCEXTGET: 1659 case MTIOCPARAMGET: 1660 { 1661 struct mtextget *g = (struct mtextget *)arg; 1662 char *tmpstr2; 1663 struct sbuf *sb; 1664 1665 /* 1666 * Report drive status using an XML format. 1667 */ 1668 1669 /* 1670 * XXX KDM will dropping the lock cause any problems here? 1671 */ 1672 cam_periph_unlock(periph); 1673 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1674 if (sb == NULL) { 1675 g->status = MT_EXT_GET_ERROR; 1676 snprintf(g->error_str, sizeof(g->error_str), 1677 "Unable to allocate %d bytes for status info", 1678 g->alloc_len); 1679 cam_periph_lock(periph); 1680 goto extget_bailout; 1681 } 1682 cam_periph_lock(periph); 1683 1684 if (cmd == MTIOCEXTGET) 1685 error = saextget(dev, periph, sb, g); 1686 else 1687 error = saparamget(softc, sb); 1688 1689 if (error != 0) 1690 goto extget_bailout; 1691 1692 error = sbuf_finish(sb); 1693 if (error == ENOMEM) { 1694 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1695 error = 0; 1696 } else if (error != 0) { 1697 g->status = MT_EXT_GET_ERROR; 1698 snprintf(g->error_str, sizeof(g->error_str), 1699 "Error %d returned from sbuf_finish()", error); 1700 } else 1701 g->status = MT_EXT_GET_OK; 1702 1703 error = 0; 1704 tmpstr2 = sbuf_data(sb); 1705 g->fill_len = strlen(tmpstr2) + 1; 1706 cam_periph_unlock(periph); 1707 1708 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1709 1710 cam_periph_lock(periph); 1711 1712extget_bailout: 1713 sbuf_delete(sb); 1714 break; 1715 } 1716 case MTIOCPARAMSET: 1717 { 1718 struct mtsetlist list; 1719 struct mtparamset *ps = (struct mtparamset *)arg; 1720 1721 bzero(&list, sizeof(list)); 1722 list.num_params = 1; 1723 list.param_len = sizeof(*ps); 1724 list.params = ps; 1725 1726 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1727 break; 1728 } 1729 case MTIOCSETLIST: 1730 { 1731 struct mtsetlist *list = (struct mtsetlist *)arg; 1732 1733 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1734 break; 1735 } 1736 case MTIOCERRSTAT: 1737 { 1738 struct scsi_tape_errors *sep = 1739 &((union mterrstat *)arg)->scsi_errstat; 1740 1741 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1742 ("saioctl: MTIOCERRSTAT\n")); 1743 1744 bzero(sep, sizeof(*sep)); 1745 sep->io_resid = softc->last_io_resid; 1746 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1747 sizeof (sep->io_sense)); 1748 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1749 sizeof (sep->io_cdb)); 1750 sep->ctl_resid = softc->last_ctl_resid; 1751 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1752 sizeof (sep->ctl_sense)); 1753 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1754 sizeof (sep->ctl_cdb)); 1755 1756 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1757 didlockperiph) 1758 bzero((caddr_t) &softc->errinfo, 1759 sizeof (softc->errinfo)); 1760 error = 0; 1761 break; 1762 } 1763 case MTIOCTOP: 1764 { 1765 struct mtop *mt; 1766 int count; 1767 1768 PENDING_MOUNT_CHECK(softc, periph, dev); 1769 1770 mt = (struct mtop *)arg; 1771 1772 1773 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1774 ("saioctl: op=0x%x count=0x%x\n", 1775 mt->mt_op, mt->mt_count)); 1776 1777 count = mt->mt_count; 1778 switch (mt->mt_op) { 1779 case MTWEOF: /* write an end-of-file marker */ 1780 /* 1781 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1782 * flag because by keeping track of filemarks 1783 * we have last written we know whether or not 1784 * we need to write more when we close the device. 1785 */ 1786 error = sawritefilemarks(periph, count, FALSE, FALSE); 1787 break; 1788 case MTWEOFI: 1789 /* write an end-of-file marker without waiting */ 1790 error = sawritefilemarks(periph, count, FALSE, TRUE); 1791 break; 1792 case MTWSS: /* write a setmark */ 1793 error = sawritefilemarks(periph, count, TRUE, FALSE); 1794 break; 1795 case MTBSR: /* backward space record */ 1796 case MTFSR: /* forward space record */ 1797 case MTBSF: /* backward space file */ 1798 case MTFSF: /* forward space file */ 1799 case MTBSS: /* backward space setmark */ 1800 case MTFSS: /* forward space setmark */ 1801 case MTEOD: /* space to end of recorded medium */ 1802 { 1803 int nmarks; 1804 1805 spaceop = SS_FILEMARKS; 1806 nmarks = softc->filemarks; 1807 error = sacheckeod(periph); 1808 if (error) { 1809 xpt_print(periph->path, 1810 "EOD check prior to spacing failed\n"); 1811 softc->flags |= SA_FLAG_EIO_PENDING; 1812 break; 1813 } 1814 nmarks -= softc->filemarks; 1815 switch(mt->mt_op) { 1816 case MTBSR: 1817 count = -count; 1818 /* FALLTHROUGH */ 1819 case MTFSR: 1820 spaceop = SS_BLOCKS; 1821 break; 1822 case MTBSF: 1823 count = -count; 1824 /* FALLTHROUGH */ 1825 case MTFSF: 1826 break; 1827 case MTBSS: 1828 count = -count; 1829 /* FALLTHROUGH */ 1830 case MTFSS: 1831 spaceop = SS_SETMARKS; 1832 break; 1833 case MTEOD: 1834 spaceop = SS_EOD; 1835 count = 0; 1836 nmarks = 0; 1837 break; 1838 default: 1839 error = EINVAL; 1840 break; 1841 } 1842 if (error) 1843 break; 1844 1845 nmarks = softc->filemarks; 1846 /* 1847 * XXX: Why are we checking again? 1848 */ 1849 error = sacheckeod(periph); 1850 if (error) 1851 break; 1852 nmarks -= softc->filemarks; 1853 error = saspace(periph, count - nmarks, spaceop); 1854 /* 1855 * At this point, clear that we've written the tape 1856 * and that we've written any filemarks. We really 1857 * don't know what the applications wishes to do next- 1858 * the sacheckeod's will make sure we terminated the 1859 * tape correctly if we'd been writing, but the next 1860 * action the user application takes will set again 1861 * whether we need to write filemarks. 1862 */ 1863 softc->flags &= 1864 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1865 softc->filemarks = 0; 1866 break; 1867 } 1868 case MTREW: /* rewind */ 1869 PENDING_MOUNT_CHECK(softc, periph, dev); 1870 (void) sacheckeod(periph); 1871 error = sarewind(periph); 1872 /* see above */ 1873 softc->flags &= 1874 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1875 softc->flags &= ~SA_FLAG_ERR_PENDING; 1876 softc->filemarks = 0; 1877 break; 1878 case MTERASE: /* erase */ 1879 PENDING_MOUNT_CHECK(softc, periph, dev); 1880 error = saerase(periph, count); 1881 softc->flags &= 1882 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1883 softc->flags &= ~SA_FLAG_ERR_PENDING; 1884 break; 1885 case MTRETENS: /* re-tension tape */ 1886 PENDING_MOUNT_CHECK(softc, periph, dev); 1887 error = saretension(periph); 1888 softc->flags &= 1889 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1890 softc->flags &= ~SA_FLAG_ERR_PENDING; 1891 break; 1892 case MTOFFL: /* rewind and put the drive offline */ 1893 1894 PENDING_MOUNT_CHECK(softc, periph, dev); 1895 1896 (void) sacheckeod(periph); 1897 /* see above */ 1898 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1899 softc->filemarks = 0; 1900 1901 error = sarewind(periph); 1902 /* clear the frozen flag anyway */ 1903 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1904 1905 /* 1906 * Be sure to allow media removal before ejecting. 1907 */ 1908 1909 saprevent(periph, PR_ALLOW); 1910 if (error == 0) { 1911 error = saloadunload(periph, FALSE); 1912 if (error == 0) { 1913 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1914 } 1915 } 1916 break; 1917 1918 case MTLOAD: 1919 error = saloadunload(periph, TRUE); 1920 break; 1921 case MTNOP: /* no operation, sets status only */ 1922 case MTCACHE: /* enable controller cache */ 1923 case MTNOCACHE: /* disable controller cache */ 1924 error = 0; 1925 break; 1926 1927 case MTSETBSIZ: /* Set block size for device */ 1928 1929 PENDING_MOUNT_CHECK(softc, periph, dev); 1930 1931 if ((softc->sili != 0) 1932 && (count != 0)) { 1933 xpt_print(periph->path, "Can't enter fixed " 1934 "block mode with SILI enabled\n"); 1935 error = EINVAL; 1936 break; 1937 } 1938 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1939 0, 0, 0); 1940 if (error == 0) { 1941 softc->last_media_blksize = 1942 softc->media_blksize; 1943 softc->media_blksize = count; 1944 if (count) { 1945 softc->flags |= SA_FLAG_FIXED; 1946 if (powerof2(count)) { 1947 softc->blk_shift = 1948 ffs(count) - 1; 1949 softc->blk_mask = count - 1; 1950 } else { 1951 softc->blk_mask = ~0; 1952 softc->blk_shift = 0; 1953 } 1954 /* 1955 * Make the user's desire 'persistent'. 1956 */ 1957 softc->quirks &= ~SA_QUIRK_VARIABLE; 1958 softc->quirks |= SA_QUIRK_FIXED; 1959 } else { 1960 softc->flags &= ~SA_FLAG_FIXED; 1961 if (softc->max_blk == 0) { 1962 softc->max_blk = ~0; 1963 } 1964 softc->blk_shift = 0; 1965 if (softc->blk_gran != 0) { 1966 softc->blk_mask = 1967 softc->blk_gran - 1; 1968 } else { 1969 softc->blk_mask = 0; 1970 } 1971 /* 1972 * Make the user's desire 'persistent'. 1973 */ 1974 softc->quirks |= SA_QUIRK_VARIABLE; 1975 softc->quirks &= ~SA_QUIRK_FIXED; 1976 } 1977 } 1978 break; 1979 case MTSETDNSTY: /* Set density for device and mode */ 1980 PENDING_MOUNT_CHECK(softc, periph, dev); 1981 1982 if (count > UCHAR_MAX) { 1983 error = EINVAL; 1984 break; 1985 } else { 1986 error = sasetparams(periph, SA_PARAM_DENSITY, 1987 0, count, 0, 0); 1988 } 1989 break; 1990 case MTCOMP: /* enable compression */ 1991 PENDING_MOUNT_CHECK(softc, periph, dev); 1992 /* 1993 * Some devices don't support compression, and 1994 * don't like it if you ask them for the 1995 * compression page. 1996 */ 1997 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1998 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1999 error = ENODEV; 2000 break; 2001 } 2002 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2003 0, 0, count, SF_NO_PRINT); 2004 break; 2005 default: 2006 error = EINVAL; 2007 } 2008 break; 2009 } 2010 case MTIOCIEOT: 2011 case MTIOCEEOT: 2012 error = 0; 2013 break; 2014 case MTIOCRDSPOS: 2015 PENDING_MOUNT_CHECK(softc, periph, dev); 2016 error = sardpos(periph, 0, (u_int32_t *) arg); 2017 break; 2018 case MTIOCRDHPOS: 2019 PENDING_MOUNT_CHECK(softc, periph, dev); 2020 error = sardpos(periph, 1, (u_int32_t *) arg); 2021 break; 2022 case MTIOCSLOCATE: 2023 case MTIOCHLOCATE: { 2024 struct mtlocate locate_info; 2025 int hard; 2026 2027 bzero(&locate_info, sizeof(locate_info)); 2028 locate_info.logical_id = *((uint32_t *)arg); 2029 if (cmd == MTIOCSLOCATE) 2030 hard = 0; 2031 else 2032 hard = 1; 2033 2034 PENDING_MOUNT_CHECK(softc, periph, dev); 2035 2036 error = sasetpos(periph, hard, &locate_info); 2037 break; 2038 } 2039 case MTIOCEXTLOCATE: 2040 PENDING_MOUNT_CHECK(softc, periph, dev); 2041 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2042 softc->flags &= 2043 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2044 softc->flags &= ~SA_FLAG_ERR_PENDING; 2045 softc->filemarks = 0; 2046 break; 2047 case MTIOCGETEOTMODEL: 2048 error = 0; 2049 if (softc->quirks & SA_QUIRK_1FM) 2050 mode = 1; 2051 else 2052 mode = 2; 2053 *((u_int32_t *) arg) = mode; 2054 break; 2055 case MTIOCSETEOTMODEL: 2056 error = 0; 2057 switch (*((u_int32_t *) arg)) { 2058 case 1: 2059 softc->quirks &= ~SA_QUIRK_2FM; 2060 softc->quirks |= SA_QUIRK_1FM; 2061 break; 2062 case 2: 2063 softc->quirks &= ~SA_QUIRK_1FM; 2064 softc->quirks |= SA_QUIRK_2FM; 2065 break; 2066 default: 2067 error = EINVAL; 2068 break; 2069 } 2070 break; 2071 case MTIOCRBLIM: { 2072 struct mtrblim *rblim; 2073 2074 rblim = (struct mtrblim *)arg; 2075 2076 rblim->granularity = softc->blk_gran; 2077 rblim->min_block_length = softc->min_blk; 2078 rblim->max_block_length = softc->max_blk; 2079 break; 2080 } 2081 default: 2082 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2083 break; 2084 } 2085 2086 /* 2087 * Check to see if we cleared a frozen state 2088 */ 2089 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2090 switch(cmd) { 2091 case MTIOCRDSPOS: 2092 case MTIOCRDHPOS: 2093 case MTIOCSLOCATE: 2094 case MTIOCHLOCATE: 2095 /* 2096 * XXX KDM look at this. 2097 */ 2098 softc->fileno = (daddr_t) -1; 2099 softc->blkno = (daddr_t) -1; 2100 softc->rep_blkno = (daddr_t) -1; 2101 softc->rep_fileno = (daddr_t) -1; 2102 softc->partition = (daddr_t) -1; 2103 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2104 xpt_print(periph->path, 2105 "tape state now unfrozen.\n"); 2106 break; 2107 default: 2108 break; 2109 } 2110 } 2111 if (didlockperiph) { 2112 cam_periph_unhold(periph); 2113 } 2114 cam_periph_unlock(periph); 2115 return (error); 2116} 2117 2118static void 2119sainit(void) 2120{ 2121 cam_status status; 2122 2123 /* 2124 * Install a global async callback. 2125 */ 2126 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2127 2128 if (status != CAM_REQ_CMP) { 2129 printf("sa: Failed to attach master async callback " 2130 "due to status 0x%x!\n", status); 2131 } 2132} 2133 2134static void 2135sadevgonecb(void *arg) 2136{ 2137 struct cam_periph *periph; 2138 struct mtx *mtx; 2139 struct sa_softc *softc; 2140 2141 periph = (struct cam_periph *)arg; 2142 softc = (struct sa_softc *)periph->softc; 2143 2144 mtx = cam_periph_mtx(periph); 2145 mtx_lock(mtx); 2146 2147 softc->num_devs_to_destroy--; 2148 if (softc->num_devs_to_destroy == 0) { 2149 int i; 2150 2151 /* 2152 * When we have gotten all of our callbacks, we will get 2153 * no more close calls from devfs. So if we have any 2154 * dangling opens, we need to release the reference held 2155 * for that particular context. 2156 */ 2157 for (i = 0; i < softc->open_count; i++) 2158 cam_periph_release_locked(periph); 2159 2160 softc->open_count = 0; 2161 2162 /* 2163 * Release the reference held for devfs, all of our 2164 * instances are gone now. 2165 */ 2166 cam_periph_release_locked(periph); 2167 } 2168 2169 /* 2170 * We reference the lock directly here, instead of using 2171 * cam_periph_unlock(). The reason is that the final call to 2172 * cam_periph_release_locked() above could result in the periph 2173 * getting freed. If that is the case, dereferencing the periph 2174 * with a cam_periph_unlock() call would cause a page fault. 2175 */ 2176 mtx_unlock(mtx); 2177} 2178 2179static void 2180saoninvalidate(struct cam_periph *periph) 2181{ 2182 struct sa_softc *softc; 2183 2184 softc = (struct sa_softc *)periph->softc; 2185 2186 /* 2187 * De-register any async callbacks. 2188 */ 2189 xpt_register_async(0, saasync, periph, periph->path); 2190 2191 softc->flags |= SA_FLAG_INVALID; 2192 2193 /* 2194 * Return all queued I/O with ENXIO. 2195 * XXX Handle any transactions queued to the card 2196 * with XPT_ABORT_CCB. 2197 */ 2198 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2199 softc->queue_count = 0; 2200 2201 /* 2202 * Tell devfs that all of our devices have gone away, and ask for a 2203 * callback when it has cleaned up its state. 2204 */ 2205 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2206 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2207 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2208 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2209} 2210 2211static void 2212sacleanup(struct cam_periph *periph) 2213{ 2214 struct sa_softc *softc; 2215 2216 softc = (struct sa_softc *)periph->softc; 2217 2218 cam_periph_unlock(periph); 2219 2220 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2221 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2222 xpt_print(periph->path, "can't remove sysctl context\n"); 2223 2224 cam_periph_lock(periph); 2225 2226 devstat_remove_entry(softc->device_stats); 2227 2228 free(softc, M_SCSISA); 2229} 2230 2231static void 2232saasync(void *callback_arg, u_int32_t code, 2233 struct cam_path *path, void *arg) 2234{ 2235 struct cam_periph *periph; 2236 2237 periph = (struct cam_periph *)callback_arg; 2238 switch (code) { 2239 case AC_FOUND_DEVICE: 2240 { 2241 struct ccb_getdev *cgd; 2242 cam_status status; 2243 2244 cgd = (struct ccb_getdev *)arg; 2245 if (cgd == NULL) 2246 break; 2247 2248 if (cgd->protocol != PROTO_SCSI) 2249 break; 2250 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2251 break; 2252 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2253 break; 2254 2255 /* 2256 * Allocate a peripheral instance for 2257 * this device and start the probe 2258 * process. 2259 */ 2260 status = cam_periph_alloc(saregister, saoninvalidate, 2261 sacleanup, sastart, 2262 "sa", CAM_PERIPH_BIO, path, 2263 saasync, AC_FOUND_DEVICE, cgd); 2264 2265 if (status != CAM_REQ_CMP 2266 && status != CAM_REQ_INPROG) 2267 printf("saasync: Unable to probe new device " 2268 "due to status 0x%x\n", status); 2269 break; 2270 } 2271 default: 2272 cam_periph_async(periph, code, path, arg); 2273 break; 2274 } 2275} 2276 2277static void 2278sasetupdev(struct sa_softc *softc, struct cdev *dev) 2279{ 2280 2281 dev->si_iosize_max = softc->maxio; 2282 dev->si_flags |= softc->si_flags; 2283 /* 2284 * Keep a count of how many non-alias devices we have created, 2285 * so we can make sure we clean them all up on shutdown. Aliases 2286 * are cleaned up when we destroy the device they're an alias for. 2287 */ 2288 if ((dev->si_flags & SI_ALIAS) == 0) 2289 softc->num_devs_to_destroy++; 2290} 2291 2292static void 2293sasysctlinit(void *context, int pending) 2294{ 2295 struct cam_periph *periph; 2296 struct sa_softc *softc; 2297 char tmpstr[80], tmpstr2[80]; 2298 2299 periph = (struct cam_periph *)context; 2300 /* 2301 * If the periph is invalid, no need to setup the sysctls. 2302 */ 2303 if (periph->flags & CAM_PERIPH_INVALID) 2304 goto bailout; 2305 2306 softc = (struct sa_softc *)periph->softc; 2307 2308 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2309 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2310 2311 sysctl_ctx_init(&softc->sysctl_ctx); 2312 softc->flags |= SA_FLAG_SCTX_INIT; 2313 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 2314 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2315 CTLFLAG_RD, 0, tmpstr); 2316 if (softc->sysctl_tree == NULL) 2317 goto bailout; 2318 2319 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2320 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2321 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2322 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2323 OID_AUTO, "maxio", CTLFLAG_RD, 2324 &softc->maxio, 0, "Maximum I/O size"); 2325 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2326 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2327 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2328 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2329 OID_AUTO, "inject_eom", CTLFLAG_RW, 2330 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2331 2332bailout: 2333 /* 2334 * Release the reference that was held when this task was enqueued. 2335 */ 2336 cam_periph_release(periph); 2337} 2338 2339static cam_status 2340saregister(struct cam_periph *periph, void *arg) 2341{ 2342 struct sa_softc *softc; 2343 struct ccb_getdev *cgd; 2344 struct ccb_pathinq cpi; 2345 struct make_dev_args args; 2346 caddr_t match; 2347 char tmpstr[80]; 2348 int error; 2349 2350 cgd = (struct ccb_getdev *)arg; 2351 if (cgd == NULL) { 2352 printf("saregister: no getdev CCB, can't register device\n"); 2353 return (CAM_REQ_CMP_ERR); 2354 } 2355 2356 softc = (struct sa_softc *) 2357 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2358 if (softc == NULL) { 2359 printf("saregister: Unable to probe new device. " 2360 "Unable to allocate softc\n"); 2361 return (CAM_REQ_CMP_ERR); 2362 } 2363 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2364 softc->state = SA_STATE_NORMAL; 2365 softc->fileno = (daddr_t) -1; 2366 softc->blkno = (daddr_t) -1; 2367 softc->rep_fileno = (daddr_t) -1; 2368 softc->rep_blkno = (daddr_t) -1; 2369 softc->partition = (daddr_t) -1; 2370 softc->bop = -1; 2371 softc->eop = -1; 2372 softc->bpew = -1; 2373 2374 bioq_init(&softc->bio_queue); 2375 softc->periph = periph; 2376 periph->softc = softc; 2377 2378 /* 2379 * See if this device has any quirks. 2380 */ 2381 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2382 (caddr_t)sa_quirk_table, 2383 nitems(sa_quirk_table), 2384 sizeof(*sa_quirk_table), scsi_inquiry_match); 2385 2386 if (match != NULL) { 2387 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2388 softc->last_media_blksize = 2389 ((struct sa_quirk_entry *)match)->prefblk; 2390 } else 2391 softc->quirks = SA_QUIRK_NONE; 2392 2393 /* 2394 * Long format data for READ POSITION was introduced in SSC, which 2395 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2396 * reports that it is SCSI-2 or older, it is unlikely to support 2397 * long position data, but it might. Some drives from that era 2398 * claim to be SCSI-2, but do support long position information. 2399 * So, instead of immediately disabling long position information 2400 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2401 * then disable long position information if we get an error. 2402 */ 2403 if (cgd->inq_data.version <= SCSI_REV_CCS) 2404 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2405 2406 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2407 struct ccb_dev_advinfo cdai; 2408 struct scsi_vpd_extended_inquiry_data ext_inq; 2409 2410 bzero(&ext_inq, sizeof(ext_inq)); 2411 2412 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2413 2414 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2415 cdai.flags = CDAI_FLAG_NONE; 2416 cdai.buftype = CDAI_TYPE_EXT_INQ; 2417 cdai.bufsiz = sizeof(ext_inq); 2418 cdai.buf = (uint8_t *)&ext_inq; 2419 xpt_action((union ccb *)&cdai); 2420 2421 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2422 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2423 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2424 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2425 softc->flags |= SA_FLAG_PROTECT_SUPP; 2426 } 2427 2428 bzero(&cpi, sizeof(cpi)); 2429 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2430 cpi.ccb_h.func_code = XPT_PATH_INQ; 2431 xpt_action((union ccb *)&cpi); 2432 2433 /* 2434 * The SA driver supports a blocksize, but we don't know the 2435 * blocksize until we media is inserted. So, set a flag to 2436 * indicate that the blocksize is unavailable right now. 2437 */ 2438 cam_periph_unlock(periph); 2439 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2440 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2441 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2442 2443 /* 2444 * Load the default value that is either compiled in, or loaded 2445 * in the global kern.cam.sa.allow_io_split tunable. 2446 */ 2447 softc->allow_io_split = sa_allow_io_split; 2448 2449 /* 2450 * Load a per-instance tunable, if it exists. NOTE that this 2451 * tunable WILL GO AWAY in FreeBSD 11.0. 2452 */ 2453 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2454 periph->unit_number); 2455 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2456 2457 /* 2458 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2459 * the smaller of cpi.maxio or MAXPHYS. 2460 */ 2461 if (cpi.maxio == 0) 2462 softc->maxio = DFLTPHYS; 2463 else if (cpi.maxio > MAXPHYS) 2464 softc->maxio = MAXPHYS; 2465 else 2466 softc->maxio = cpi.maxio; 2467 2468 /* 2469 * Record the controller's maximum I/O size so we can report it to 2470 * the user later. 2471 */ 2472 softc->cpi_maxio = cpi.maxio; 2473 2474 /* 2475 * By default we tell physio that we do not want our I/O split. 2476 * The user needs to have a 1:1 mapping between the size of his 2477 * write to a tape character device and the size of the write 2478 * that actually goes down to the drive. 2479 */ 2480 if (softc->allow_io_split == 0) 2481 softc->si_flags = SI_NOSPLIT; 2482 else 2483 softc->si_flags = 0; 2484 2485 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2486 2487 /* 2488 * If the SIM supports unmapped I/O, let physio know that we can 2489 * handle unmapped buffers. 2490 */ 2491 if (cpi.hba_misc & PIM_UNMAPPED) 2492 softc->si_flags |= SI_UNMAPPED; 2493 2494 /* 2495 * Acquire a reference to the periph before we create the devfs 2496 * instances for it. We'll release this reference once the devfs 2497 * instances have been freed. 2498 */ 2499 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 2500 xpt_print(periph->path, "%s: lost periph during " 2501 "registration!\n", __func__); 2502 cam_periph_lock(periph); 2503 return (CAM_REQ_CMP_ERR); 2504 } 2505 2506 make_dev_args_init(&args); 2507 args.mda_devsw = &sa_cdevsw; 2508 args.mda_si_drv1 = softc->periph; 2509 args.mda_uid = UID_ROOT; 2510 args.mda_gid = GID_OPERATOR; 2511 args.mda_mode = 0660; 2512 2513 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2514 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2515 periph->periph_name, periph->unit_number); 2516 if (error != 0) { 2517 cam_periph_lock(periph); 2518 return (CAM_REQ_CMP_ERR); 2519 } 2520 sasetupdev(softc, softc->devs.ctl_dev); 2521 2522 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2523 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2524 periph->periph_name, periph->unit_number); 2525 if (error != 0) { 2526 cam_periph_lock(periph); 2527 return (CAM_REQ_CMP_ERR); 2528 } 2529 sasetupdev(softc, softc->devs.r_dev); 2530 2531 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2532 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2533 periph->periph_name, periph->unit_number); 2534 if (error != 0) { 2535 cam_periph_lock(periph); 2536 return (CAM_REQ_CMP_ERR); 2537 } 2538 sasetupdev(softc, softc->devs.nr_dev); 2539 2540 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2541 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2542 periph->periph_name, periph->unit_number); 2543 if (error != 0) { 2544 cam_periph_lock(periph); 2545 return (CAM_REQ_CMP_ERR); 2546 } 2547 sasetupdev(softc, softc->devs.er_dev); 2548 2549 cam_periph_lock(periph); 2550 2551 softc->density_type_bits[0] = 0; 2552 softc->density_type_bits[1] = SRDS_MEDIA; 2553 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2554 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2555 /* 2556 * Bump the peripheral refcount for the sysctl thread, in case we 2557 * get invalidated before the thread has a chance to run. 2558 */ 2559 cam_periph_acquire(periph); 2560 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2561 2562 /* 2563 * Add an async callback so that we get 2564 * notified if this device goes away. 2565 */ 2566 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2567 2568 xpt_announce_periph(periph, NULL); 2569 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2570 2571 return (CAM_REQ_CMP); 2572} 2573 2574static void 2575sastart(struct cam_periph *periph, union ccb *start_ccb) 2576{ 2577 struct sa_softc *softc; 2578 2579 softc = (struct sa_softc *)periph->softc; 2580 2581 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2582 2583 2584 switch (softc->state) { 2585 case SA_STATE_NORMAL: 2586 { 2587 /* Pull a buffer from the queue and get going on it */ 2588 struct bio *bp; 2589 2590 /* 2591 * See if there is a buf with work for us to do.. 2592 */ 2593 bp = bioq_first(&softc->bio_queue); 2594 if (bp == NULL) { 2595 xpt_release_ccb(start_ccb); 2596 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2597 || (softc->inject_eom != 0)) { 2598 struct bio *done_bp; 2599 2600 if (softc->inject_eom != 0) { 2601 softc->flags |= SA_FLAG_EOM_PENDING; 2602 softc->inject_eom = 0; 2603 /* 2604 * If we're injecting EOM for writes, we 2605 * need to keep PEWS set for 3 queries 2606 * to cover 2 position requests from the 2607 * kernel via sagetpos(), and then allow 2608 * for one for the user to see the BPEW 2609 * flag (e.g. via mt status). After that, 2610 * it will be cleared. 2611 */ 2612 if (bp->bio_cmd == BIO_WRITE) 2613 softc->set_pews_status = 3; 2614 else 2615 softc->set_pews_status = 1; 2616 } 2617again: 2618 softc->queue_count--; 2619 bioq_remove(&softc->bio_queue, bp); 2620 bp->bio_resid = bp->bio_bcount; 2621 done_bp = bp; 2622 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2623 /* 2624 * We have two different behaviors for 2625 * writes when we hit either Early Warning 2626 * or the PEWZ (Programmable Early Warning 2627 * Zone). The default behavior is that 2628 * for all writes that are currently 2629 * queued after the write where we saw the 2630 * early warning, we will return the write 2631 * with the residual equal to the count. 2632 * i.e. tell the application that 0 bytes 2633 * were written. 2634 * 2635 * The alternate behavior, which is enabled 2636 * when eot_warn is set, is that in 2637 * addition to setting the residual equal 2638 * to the count, we will set the error 2639 * to ENOSPC. 2640 * 2641 * In either case, once queued writes are 2642 * cleared out, we clear the error flag 2643 * (see below) and the application is free to 2644 * attempt to write more. 2645 */ 2646 if (softc->eot_warn != 0) { 2647 bp->bio_flags |= BIO_ERROR; 2648 bp->bio_error = ENOSPC; 2649 } else 2650 bp->bio_error = 0; 2651 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2652 /* 2653 * This can only happen if we're reading 2654 * in fixed length mode. In this case, 2655 * we dump the rest of the list the 2656 * same way. 2657 */ 2658 bp->bio_error = 0; 2659 if (bioq_first(&softc->bio_queue) != NULL) { 2660 biodone(done_bp); 2661 goto again; 2662 } 2663 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2664 bp->bio_error = EIO; 2665 bp->bio_flags |= BIO_ERROR; 2666 } 2667 bp = bioq_first(&softc->bio_queue); 2668 /* 2669 * Only if we have no other buffers queued up 2670 * do we clear the pending error flag. 2671 */ 2672 if (bp == NULL) 2673 softc->flags &= ~SA_FLAG_ERR_PENDING; 2674 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2675 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2676 "%d more buffers queued up\n", 2677 (softc->flags & SA_FLAG_ERR_PENDING), 2678 (bp != NULL)? "not " : " ", softc->queue_count)); 2679 xpt_release_ccb(start_ccb); 2680 biodone(done_bp); 2681 } else { 2682 u_int32_t length; 2683 2684 bioq_remove(&softc->bio_queue, bp); 2685 softc->queue_count--; 2686 2687 length = bp->bio_bcount; 2688 2689 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2690 if (softc->blk_shift != 0) { 2691 length = length >> softc->blk_shift; 2692 } else if (softc->media_blksize != 0) { 2693 length = length / softc->media_blksize; 2694 } else { 2695 bp->bio_error = EIO; 2696 xpt_print(periph->path, "zero blocksize" 2697 " for FIXED length writes?\n"); 2698 biodone(bp); 2699 break; 2700 } 2701#if 0 2702 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2703 ("issuing a %d fixed record %s\n", 2704 length, (bp->bio_cmd == BIO_READ)? "read" : 2705 "write")); 2706#endif 2707 } else { 2708#if 0 2709 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2710 ("issuing a %d variable byte %s\n", 2711 length, (bp->bio_cmd == BIO_READ)? "read" : 2712 "write")); 2713#endif 2714 } 2715 devstat_start_transaction_bio(softc->device_stats, bp); 2716 /* 2717 * Some people have theorized that we should 2718 * suppress illegal length indication if we are 2719 * running in variable block mode so that we don't 2720 * have to request sense every time our requested 2721 * block size is larger than the written block. 2722 * The residual information from the ccb allows 2723 * us to identify this situation anyway. The only 2724 * problem with this is that we will not get 2725 * information about blocks that are larger than 2726 * our read buffer unless we set the block size 2727 * in the mode page to something other than 0. 2728 * 2729 * I believe that this is a non-issue. If user apps 2730 * don't adjust their read size to match our record 2731 * size, that's just life. Anyway, the typical usage 2732 * would be to issue, e.g., 64KB reads and occasionally 2733 * have to do deal with 512 byte or 1KB intermediate 2734 * records. 2735 * 2736 * That said, though, we now support setting the 2737 * SILI bit on reads, and we set the blocksize to 4 2738 * bytes when we do that. This gives us 2739 * compatibility with software that wants this, 2740 * although the only real difference between that 2741 * and not setting the SILI bit on reads is that we 2742 * won't get a check condition on reads where our 2743 * request size is larger than the block on tape. 2744 * That probably only makes a real difference in 2745 * non-packetized SCSI, where you have to go back 2746 * to the drive to request sense and thus incur 2747 * more latency. 2748 */ 2749 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2750 MTIO_DSREG_RD : MTIO_DSREG_WR; 2751 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2752 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2753 SCSI_RW_READ : SCSI_RW_WRITE) | 2754 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2755 SCSI_RW_BIO : 0), softc->sili, 2756 (softc->flags & SA_FLAG_FIXED) != 0, length, 2757 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2758 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2759 IO_TIMEOUT); 2760 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2761 start_ccb->ccb_h.ccb_bp = bp; 2762 bp = bioq_first(&softc->bio_queue); 2763 xpt_action(start_ccb); 2764 } 2765 2766 if (bp != NULL) { 2767 /* Have more work to do, so ensure we stay scheduled */ 2768 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2769 } 2770 break; 2771 } 2772 case SA_STATE_ABNORMAL: 2773 default: 2774 panic("state 0x%x in sastart", softc->state); 2775 break; 2776 } 2777} 2778 2779 2780static void 2781sadone(struct cam_periph *periph, union ccb *done_ccb) 2782{ 2783 struct sa_softc *softc; 2784 struct ccb_scsiio *csio; 2785 struct bio *bp; 2786 int error; 2787 2788 softc = (struct sa_softc *)periph->softc; 2789 csio = &done_ccb->csio; 2790 2791 softc->dsreg = MTIO_DSREG_REST; 2792 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2793 error = 0; 2794 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2795 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2796 /* 2797 * A retry was scheduled, so just return. 2798 */ 2799 return; 2800 } 2801 } 2802 2803 if (error == EIO) { 2804 2805 /* 2806 * Catastrophic error. Mark the tape as frozen 2807 * (we no longer know tape position). 2808 * 2809 * Return all queued I/O with EIO, and unfreeze 2810 * our queue so that future transactions that 2811 * attempt to fix this problem can get to the 2812 * device. 2813 * 2814 */ 2815 2816 softc->flags |= SA_FLAG_TAPE_FROZEN; 2817 bioq_flush(&softc->bio_queue, NULL, EIO); 2818 } 2819 if (error != 0) { 2820 bp->bio_resid = bp->bio_bcount; 2821 bp->bio_error = error; 2822 bp->bio_flags |= BIO_ERROR; 2823 /* 2824 * In the error case, position is updated in saerror. 2825 */ 2826 } else { 2827 bp->bio_resid = csio->resid; 2828 bp->bio_error = 0; 2829 if (csio->resid != 0) { 2830 bp->bio_flags |= BIO_ERROR; 2831 } 2832 if (bp->bio_cmd == BIO_WRITE) { 2833 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2834 softc->filemarks = 0; 2835 } 2836 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2837 (softc->blkno != (daddr_t) -1)) { 2838 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2839 u_int32_t l; 2840 if (softc->blk_shift != 0) { 2841 l = bp->bio_bcount >> 2842 softc->blk_shift; 2843 } else { 2844 l = bp->bio_bcount / 2845 softc->media_blksize; 2846 } 2847 softc->blkno += (daddr_t) l; 2848 } else { 2849 softc->blkno++; 2850 } 2851 } 2852 } 2853 /* 2854 * If we had an error (immediate or pending), 2855 * release the device queue now. 2856 */ 2857 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2858 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2859 if (error || bp->bio_resid) { 2860 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2861 ("error %d resid %ld count %ld\n", error, 2862 bp->bio_resid, bp->bio_bcount)); 2863 } 2864 biofinish(bp, softc->device_stats, 0); 2865 xpt_release_ccb(done_ccb); 2866} 2867 2868/* 2869 * Mount the tape (make sure it's ready for I/O). 2870 */ 2871static int 2872samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2873{ 2874 struct sa_softc *softc; 2875 union ccb *ccb; 2876 int error; 2877 2878 /* 2879 * oflags can be checked for 'kind' of open (read-only check) - later 2880 * dev can be checked for a control-mode or compression open - later 2881 */ 2882 UNUSED_PARAMETER(oflags); 2883 UNUSED_PARAMETER(dev); 2884 2885 2886 softc = (struct sa_softc *)periph->softc; 2887 2888 /* 2889 * This should determine if something has happened since the last 2890 * open/mount that would invalidate the mount. We do *not* want 2891 * to retry this command- we just want the status. But we only 2892 * do this if we're mounted already- if we're not mounted, 2893 * we don't care about the unit read state and can instead use 2894 * this opportunity to attempt to reserve the tape unit. 2895 */ 2896 2897 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2898 ccb = cam_periph_getccb(periph, 1); 2899 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2900 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2901 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2902 softc->device_stats); 2903 if (error == ENXIO) { 2904 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2905 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2906 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2907 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2908 softc->device_stats); 2909 } else if (error) { 2910 /* 2911 * We don't need to freeze the tape because we 2912 * will now attempt to rewind/load it. 2913 */ 2914 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2915 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2916 xpt_print(periph->path, 2917 "error %d on TUR in samount\n", error); 2918 } 2919 } 2920 } else { 2921 error = sareservereleaseunit(periph, TRUE); 2922 if (error) { 2923 return (error); 2924 } 2925 ccb = cam_periph_getccb(periph, 1); 2926 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2927 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2928 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2929 softc->device_stats); 2930 } 2931 2932 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2933 struct scsi_read_block_limits_data *rblim = NULL; 2934 int comp_enabled, comp_supported; 2935 u_int8_t write_protect, guessing = 0; 2936 2937 /* 2938 * Clear out old state. 2939 */ 2940 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2941 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2942 softc->filemarks = 0; 2943 2944 /* 2945 * *Very* first off, make sure we're loaded to BOT. 2946 */ 2947 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2948 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2949 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2950 softc->device_stats); 2951 2952 /* 2953 * In case this doesn't work, do a REWIND instead 2954 */ 2955 if (error) { 2956 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2957 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2958 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2959 softc->device_stats); 2960 } 2961 if (error) { 2962 xpt_release_ccb(ccb); 2963 goto exit; 2964 } 2965 2966 /* 2967 * Do a dummy test read to force access to the 2968 * media so that the drive will really know what's 2969 * there. We actually don't really care what the 2970 * blocksize on tape is and don't expect to really 2971 * read a full record. 2972 */ 2973 rblim = (struct scsi_read_block_limits_data *) 2974 malloc(8192, M_SCSISA, M_NOWAIT); 2975 if (rblim == NULL) { 2976 xpt_print(periph->path, "no memory for test read\n"); 2977 xpt_release_ccb(ccb); 2978 error = ENOMEM; 2979 goto exit; 2980 } 2981 2982 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2983 scsi_sa_read_write(&ccb->csio, 0, sadone, 2984 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2985 (void *) rblim, 8192, SSD_FULL_SIZE, 2986 IO_TIMEOUT); 2987 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2988 softc->device_stats); 2989 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2990 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2991 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2992 SF_NO_PRINT | SF_RETRY_UA, 2993 softc->device_stats); 2994 if (error) { 2995 xpt_print(periph->path, 2996 "unable to rewind after test read\n"); 2997 xpt_release_ccb(ccb); 2998 goto exit; 2999 } 3000 } 3001 3002 /* 3003 * Next off, determine block limits. 3004 */ 3005 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3006 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3007 3008 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3009 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3010 3011 xpt_release_ccb(ccb); 3012 3013 if (error != 0) { 3014 /* 3015 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3016 * a MANDATORY command. Anyway- it doesn't matter- 3017 * we can proceed anyway. 3018 */ 3019 softc->blk_gran = 0; 3020 softc->max_blk = ~0; 3021 softc->min_blk = 0; 3022 } else { 3023 if (softc->scsi_rev >= SCSI_REV_SPC) { 3024 softc->blk_gran = RBL_GRAN(rblim); 3025 } else { 3026 softc->blk_gran = 0; 3027 } 3028 /* 3029 * We take max_blk == min_blk to mean a default to 3030 * fixed mode- but note that whatever we get out of 3031 * sagetparams below will actually determine whether 3032 * we are actually *in* fixed mode. 3033 */ 3034 softc->max_blk = scsi_3btoul(rblim->maximum); 3035 softc->min_blk = scsi_2btoul(rblim->minimum); 3036 3037 3038 } 3039 /* 3040 * Next, perform a mode sense to determine 3041 * current density, blocksize, compression etc. 3042 */ 3043 error = sagetparams(periph, SA_PARAM_ALL, 3044 &softc->media_blksize, 3045 &softc->media_density, 3046 &softc->media_numblks, 3047 &softc->buffer_mode, &write_protect, 3048 &softc->speed, &comp_supported, 3049 &comp_enabled, &softc->comp_algorithm, 3050 NULL, NULL, 0, 0); 3051 3052 if (error != 0) { 3053 /* 3054 * We could work a little harder here. We could 3055 * adjust our attempts to get information. It 3056 * might be an ancient tape drive. If someone 3057 * nudges us, we'll do that. 3058 */ 3059 goto exit; 3060 } 3061 3062 /* 3063 * If no quirk has determined that this is a device that is 3064 * preferred to be in fixed or variable mode, now is the time 3065 * to find out. 3066 */ 3067 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3068 guessing = 1; 3069 /* 3070 * This could be expensive to find out. Luckily we 3071 * only need to do this once. If we start out in 3072 * 'default' mode, try and set ourselves to one 3073 * of the densities that would determine a wad 3074 * of other stuff. Go from highest to lowest. 3075 */ 3076 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3077 int i; 3078 static u_int8_t ctry[] = { 3079 SCSI_DENSITY_HALFINCH_PE, 3080 SCSI_DENSITY_HALFINCH_6250C, 3081 SCSI_DENSITY_HALFINCH_6250, 3082 SCSI_DENSITY_HALFINCH_1600, 3083 SCSI_DENSITY_HALFINCH_800, 3084 SCSI_DENSITY_QIC_4GB, 3085 SCSI_DENSITY_QIC_2GB, 3086 SCSI_DENSITY_QIC_525_320, 3087 SCSI_DENSITY_QIC_150, 3088 SCSI_DENSITY_QIC_120, 3089 SCSI_DENSITY_QIC_24, 3090 SCSI_DENSITY_QIC_11_9TRK, 3091 SCSI_DENSITY_QIC_11_4TRK, 3092 SCSI_DENSITY_QIC_1320, 3093 SCSI_DENSITY_QIC_3080, 3094 0 3095 }; 3096 for (i = 0; ctry[i]; i++) { 3097 error = sasetparams(periph, 3098 SA_PARAM_DENSITY, 0, ctry[i], 3099 0, SF_NO_PRINT); 3100 if (error == 0) { 3101 softc->media_density = ctry[i]; 3102 break; 3103 } 3104 } 3105 } 3106 switch (softc->media_density) { 3107 case SCSI_DENSITY_QIC_11_4TRK: 3108 case SCSI_DENSITY_QIC_11_9TRK: 3109 case SCSI_DENSITY_QIC_24: 3110 case SCSI_DENSITY_QIC_120: 3111 case SCSI_DENSITY_QIC_150: 3112 case SCSI_DENSITY_QIC_525_320: 3113 case SCSI_DENSITY_QIC_1320: 3114 case SCSI_DENSITY_QIC_3080: 3115 softc->quirks &= ~SA_QUIRK_2FM; 3116 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3117 softc->last_media_blksize = 512; 3118 break; 3119 case SCSI_DENSITY_QIC_4GB: 3120 case SCSI_DENSITY_QIC_2GB: 3121 softc->quirks &= ~SA_QUIRK_2FM; 3122 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3123 softc->last_media_blksize = 1024; 3124 break; 3125 default: 3126 softc->last_media_blksize = 3127 softc->media_blksize; 3128 softc->quirks |= SA_QUIRK_VARIABLE; 3129 break; 3130 } 3131 } 3132 3133 /* 3134 * If no quirk has determined that this is a device that needs 3135 * to have 2 Filemarks at EOD, now is the time to find out. 3136 */ 3137 3138 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3139 switch (softc->media_density) { 3140 case SCSI_DENSITY_HALFINCH_800: 3141 case SCSI_DENSITY_HALFINCH_1600: 3142 case SCSI_DENSITY_HALFINCH_6250: 3143 case SCSI_DENSITY_HALFINCH_6250C: 3144 case SCSI_DENSITY_HALFINCH_PE: 3145 softc->quirks &= ~SA_QUIRK_1FM; 3146 softc->quirks |= SA_QUIRK_2FM; 3147 break; 3148 default: 3149 break; 3150 } 3151 } 3152 3153 /* 3154 * Now validate that some info we got makes sense. 3155 */ 3156 if ((softc->max_blk < softc->media_blksize) || 3157 (softc->min_blk > softc->media_blksize && 3158 softc->media_blksize)) { 3159 xpt_print(periph->path, 3160 "BLOCK LIMITS (%d..%d) could not match current " 3161 "block settings (%d)- adjusting\n", softc->min_blk, 3162 softc->max_blk, softc->media_blksize); 3163 softc->max_blk = softc->min_blk = 3164 softc->media_blksize; 3165 } 3166 3167 /* 3168 * Now put ourselves into the right frame of mind based 3169 * upon quirks... 3170 */ 3171tryagain: 3172 /* 3173 * If we want to be in FIXED mode and our current blocksize 3174 * is not equal to our last blocksize (if nonzero), try and 3175 * set ourselves to this last blocksize (as the 'preferred' 3176 * block size). The initial quirkmatch at registry sets the 3177 * initial 'last' blocksize. If, for whatever reason, this 3178 * 'last' blocksize is zero, set the blocksize to 512, 3179 * or min_blk if that's larger. 3180 */ 3181 if ((softc->quirks & SA_QUIRK_FIXED) && 3182 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3183 (softc->media_blksize != softc->last_media_blksize)) { 3184 softc->media_blksize = softc->last_media_blksize; 3185 if (softc->media_blksize == 0) { 3186 softc->media_blksize = 512; 3187 if (softc->media_blksize < softc->min_blk) { 3188 softc->media_blksize = softc->min_blk; 3189 } 3190 } 3191 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3192 softc->media_blksize, 0, 0, SF_NO_PRINT); 3193 if (error) { 3194 xpt_print(periph->path, 3195 "unable to set fixed blocksize to %d\n", 3196 softc->media_blksize); 3197 goto exit; 3198 } 3199 } 3200 3201 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3202 (softc->media_blksize != 0)) { 3203 softc->last_media_blksize = softc->media_blksize; 3204 softc->media_blksize = 0; 3205 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3206 0, 0, 0, SF_NO_PRINT); 3207 if (error) { 3208 /* 3209 * If this fails and we were guessing, just 3210 * assume that we got it wrong and go try 3211 * fixed block mode. Don't even check against 3212 * density code at this point. 3213 */ 3214 if (guessing) { 3215 softc->quirks &= ~SA_QUIRK_VARIABLE; 3216 softc->quirks |= SA_QUIRK_FIXED; 3217 if (softc->last_media_blksize == 0) 3218 softc->last_media_blksize = 512; 3219 goto tryagain; 3220 } 3221 xpt_print(periph->path, 3222 "unable to set variable blocksize\n"); 3223 goto exit; 3224 } 3225 } 3226 3227 /* 3228 * Now that we have the current block size, 3229 * set up some parameters for sastart's usage. 3230 */ 3231 if (softc->media_blksize) { 3232 softc->flags |= SA_FLAG_FIXED; 3233 if (powerof2(softc->media_blksize)) { 3234 softc->blk_shift = 3235 ffs(softc->media_blksize) - 1; 3236 softc->blk_mask = softc->media_blksize - 1; 3237 } else { 3238 softc->blk_mask = ~0; 3239 softc->blk_shift = 0; 3240 } 3241 } else { 3242 /* 3243 * The SCSI-3 spec allows 0 to mean "unspecified". 3244 * The SCSI-1 spec allows 0 to mean 'infinite'. 3245 * 3246 * Either works here. 3247 */ 3248 if (softc->max_blk == 0) { 3249 softc->max_blk = ~0; 3250 } 3251 softc->blk_shift = 0; 3252 if (softc->blk_gran != 0) { 3253 softc->blk_mask = softc->blk_gran - 1; 3254 } else { 3255 softc->blk_mask = 0; 3256 } 3257 } 3258 3259 if (write_protect) 3260 softc->flags |= SA_FLAG_TAPE_WP; 3261 3262 if (comp_supported) { 3263 if (softc->saved_comp_algorithm == 0) 3264 softc->saved_comp_algorithm = 3265 softc->comp_algorithm; 3266 softc->flags |= SA_FLAG_COMP_SUPP; 3267 if (comp_enabled) 3268 softc->flags |= SA_FLAG_COMP_ENABLED; 3269 } else 3270 softc->flags |= SA_FLAG_COMP_UNSUPP; 3271 3272 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3273 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3274 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3275 0, 0, SF_NO_PRINT); 3276 if (error == 0) { 3277 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3278 } else { 3279 xpt_print(periph->path, 3280 "unable to set buffered mode\n"); 3281 } 3282 error = 0; /* not an error */ 3283 } 3284 3285 3286 if (error == 0) { 3287 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3288 } 3289exit: 3290 if (rblim != NULL) 3291 free(rblim, M_SCSISA); 3292 3293 if (error != 0) { 3294 softc->dsreg = MTIO_DSREG_NIL; 3295 } else { 3296 softc->fileno = softc->blkno = 0; 3297 softc->rep_fileno = softc->rep_blkno = -1; 3298 softc->partition = 0; 3299 softc->dsreg = MTIO_DSREG_REST; 3300 } 3301#ifdef SA_1FM_AT_EOD 3302 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3303 softc->quirks |= SA_QUIRK_1FM; 3304#else 3305 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3306 softc->quirks |= SA_QUIRK_2FM; 3307#endif 3308 } else 3309 xpt_release_ccb(ccb); 3310 3311 /* 3312 * If we return an error, we're not mounted any more, 3313 * so release any device reservation. 3314 */ 3315 if (error != 0) { 3316 (void) sareservereleaseunit(periph, FALSE); 3317 } else { 3318 /* 3319 * Clear I/O residual. 3320 */ 3321 softc->last_io_resid = 0; 3322 softc->last_ctl_resid = 0; 3323 } 3324 return (error); 3325} 3326 3327/* 3328 * How many filemarks do we need to write if we were to terminate the 3329 * tape session right now? Note that this can be a negative number 3330 */ 3331 3332static int 3333samarkswanted(struct cam_periph *periph) 3334{ 3335 int markswanted; 3336 struct sa_softc *softc; 3337 3338 softc = (struct sa_softc *)periph->softc; 3339 markswanted = 0; 3340 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3341 markswanted++; 3342 if (softc->quirks & SA_QUIRK_2FM) 3343 markswanted++; 3344 } 3345 markswanted -= softc->filemarks; 3346 return (markswanted); 3347} 3348 3349static int 3350sacheckeod(struct cam_periph *periph) 3351{ 3352 int error; 3353 int markswanted; 3354 3355 markswanted = samarkswanted(periph); 3356 3357 if (markswanted > 0) { 3358 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3359 } else { 3360 error = 0; 3361 } 3362 return (error); 3363} 3364 3365static int 3366saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3367{ 3368 static const char *toobig = 3369 "%d-byte tape record bigger than supplied buffer\n"; 3370 struct cam_periph *periph; 3371 struct sa_softc *softc; 3372 struct ccb_scsiio *csio; 3373 struct scsi_sense_data *sense; 3374 uint64_t resid = 0; 3375 int64_t info = 0; 3376 cam_status status; 3377 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3378 int sense_len; 3379 uint8_t stream_bits; 3380 3381 periph = xpt_path_periph(ccb->ccb_h.path); 3382 softc = (struct sa_softc *)periph->softc; 3383 csio = &ccb->csio; 3384 sense = &csio->sense_data; 3385 sense_len = csio->sense_len - csio->sense_resid; 3386 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3387 &asc, &ascq, /*show_errors*/ 1); 3388 if (asc != -1 && ascq != -1) 3389 aqvalid = 1; 3390 else 3391 aqvalid = 0; 3392 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3393 stream_valid = 1; 3394 else 3395 stream_valid = 0; 3396 error = 0; 3397 3398 status = csio->ccb_h.status & CAM_STATUS_MASK; 3399 3400 /* 3401 * Calculate/latch up, any residuals... We do this in a funny 2-step 3402 * so we can print stuff here if we have CAM_DEBUG enabled for this 3403 * unit. 3404 */ 3405 if (status == CAM_SCSI_STATUS_ERROR) { 3406 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3407 &info) == 0) { 3408 if ((softc->flags & SA_FLAG_FIXED) != 0) 3409 resid *= softc->media_blksize; 3410 } else { 3411 resid = csio->dxfer_len; 3412 info = resid; 3413 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3414 if (softc->media_blksize) 3415 info /= softc->media_blksize; 3416 } 3417 } 3418 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3419 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3420 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3421 sizeof (struct scsi_sense_data)); 3422 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3423 (int) csio->cdb_len); 3424 softc->last_io_resid = resid; 3425 softc->last_resid_was_io = 1; 3426 } else { 3427 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3428 sizeof (struct scsi_sense_data)); 3429 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3430 (int) csio->cdb_len); 3431 softc->last_ctl_resid = resid; 3432 softc->last_resid_was_io = 0; 3433 } 3434 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3435 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3436 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3437 sense_key, asc, ascq, status, 3438 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3439 csio->dxfer_len)); 3440 } else { 3441 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3442 ("Cam Status 0x%x\n", status)); 3443 } 3444 3445 switch (status) { 3446 case CAM_REQ_CMP: 3447 return (0); 3448 case CAM_SCSI_STATUS_ERROR: 3449 /* 3450 * If a read/write command, we handle it here. 3451 */ 3452 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3453 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3454 break; 3455 } 3456 /* 3457 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 3458 * on a non read/write command, we assume it's not an error 3459 * and propagate the residule and return. 3460 */ 3461 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 3462 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3463 csio->resid = resid; 3464 QFRLS(ccb); 3465 return (0); 3466 } 3467 /* 3468 * Otherwise, we let the common code handle this. 3469 */ 3470 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3471 3472 /* 3473 * XXX: To Be Fixed 3474 * We cannot depend upon CAM honoring retry counts for these. 3475 */ 3476 case CAM_SCSI_BUS_RESET: 3477 case CAM_BDR_SENT: 3478 if (ccb->ccb_h.retry_count <= 0) { 3479 return (EIO); 3480 } 3481 /* FALLTHROUGH */ 3482 default: 3483 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3484 } 3485 3486 /* 3487 * Handle filemark, end of tape, mismatched record sizes.... 3488 * From this point out, we're only handling read/write cases. 3489 * Handle writes && reads differently. 3490 */ 3491 3492 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3493 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3494 csio->resid = resid; 3495 error = ENOSPC; 3496 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3497 softc->flags |= SA_FLAG_EOM_PENDING; 3498 /* 3499 * Grotesque as it seems, the few times 3500 * I've actually seen a non-zero resid, 3501 * the tape drive actually lied and had 3502 * written all the data!. 3503 */ 3504 csio->resid = 0; 3505 } 3506 } else { 3507 csio->resid = resid; 3508 if (sense_key == SSD_KEY_BLANK_CHECK) { 3509 if (softc->quirks & SA_QUIRK_1FM) { 3510 error = 0; 3511 softc->flags |= SA_FLAG_EOM_PENDING; 3512 } else { 3513 error = EIO; 3514 } 3515 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3516 if (softc->flags & SA_FLAG_FIXED) { 3517 error = -1; 3518 softc->flags |= SA_FLAG_EOF_PENDING; 3519 } 3520 /* 3521 * Unconditionally, if we detected a filemark on a read, 3522 * mark that we've run moved a file ahead. 3523 */ 3524 if (softc->fileno != (daddr_t) -1) { 3525 softc->fileno++; 3526 softc->blkno = 0; 3527 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3528 } 3529 } 3530 } 3531 3532 /* 3533 * Incorrect Length usually applies to read, but can apply to writes. 3534 */ 3535 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3536 if (info < 0) { 3537 xpt_print(csio->ccb_h.path, toobig, 3538 csio->dxfer_len - info); 3539 csio->resid = csio->dxfer_len; 3540 error = EIO; 3541 } else { 3542 csio->resid = resid; 3543 if (softc->flags & SA_FLAG_FIXED) { 3544 softc->flags |= SA_FLAG_EIO_PENDING; 3545 } 3546 /* 3547 * Bump the block number if we hadn't seen a filemark. 3548 * Do this independent of errors (we've moved anyway). 3549 */ 3550 if ((stream_valid == 0) || 3551 (stream_bits & SSD_FILEMARK) == 0) { 3552 if (softc->blkno != (daddr_t) -1) { 3553 softc->blkno++; 3554 csio->ccb_h.ccb_pflags |= 3555 SA_POSITION_UPDATED; 3556 } 3557 } 3558 } 3559 } 3560 3561 if (error <= 0) { 3562 /* 3563 * Unfreeze the queue if frozen as we're not returning anything 3564 * to our waiters that would indicate an I/O error has occurred 3565 * (yet). 3566 */ 3567 QFRLS(ccb); 3568 error = 0; 3569 } 3570 return (error); 3571} 3572 3573static int 3574sagetparams(struct cam_periph *periph, sa_params params_to_get, 3575 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3576 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3577 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3578 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3579 int dp_size, int prot_changeable) 3580{ 3581 union ccb *ccb; 3582 void *mode_buffer; 3583 struct scsi_mode_header_6 *mode_hdr; 3584 struct scsi_mode_blk_desc *mode_blk; 3585 int mode_buffer_len; 3586 struct sa_softc *softc; 3587 u_int8_t cpage; 3588 int error; 3589 cam_status status; 3590 3591 softc = (struct sa_softc *)periph->softc; 3592 ccb = cam_periph_getccb(periph, 1); 3593 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3594 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3595 else 3596 cpage = SA_DATA_COMPRESSION_PAGE; 3597 3598retry: 3599 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3600 3601 if (params_to_get & SA_PARAM_COMPRESSION) { 3602 if (softc->quirks & SA_QUIRK_NOCOMP) { 3603 *comp_supported = FALSE; 3604 params_to_get &= ~SA_PARAM_COMPRESSION; 3605 } else 3606 mode_buffer_len += sizeof (sa_comp_t); 3607 } 3608 3609 /* XXX Fix M_NOWAIT */ 3610 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3611 if (mode_buffer == NULL) { 3612 xpt_release_ccb(ccb); 3613 return (ENOMEM); 3614 } 3615 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3616 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3617 3618 /* it is safe to retry this */ 3619 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3620 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3621 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3622 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3623 3624 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3625 softc->device_stats); 3626 3627 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3628 3629 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3630 /* 3631 * Hmm. Let's see if we can try another page... 3632 * If we've already done that, give up on compression 3633 * for this device and remember this for the future 3634 * and attempt the request without asking for compression 3635 * info. 3636 */ 3637 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3638 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3639 goto retry; 3640 } 3641 softc->quirks |= SA_QUIRK_NOCOMP; 3642 free(mode_buffer, M_SCSISA); 3643 goto retry; 3644 } else if (status == CAM_SCSI_STATUS_ERROR) { 3645 /* Tell the user about the fatal error. */ 3646 scsi_sense_print(&ccb->csio); 3647 goto sagetparamsexit; 3648 } 3649 3650 /* 3651 * If the user only wants the compression information, and 3652 * the device doesn't send back the block descriptor, it's 3653 * no big deal. If the user wants more than just 3654 * compression, though, and the device doesn't pass back the 3655 * block descriptor, we need to send another mode sense to 3656 * get the block descriptor. 3657 */ 3658 if ((mode_hdr->blk_desc_len == 0) && 3659 (params_to_get & SA_PARAM_COMPRESSION) && 3660 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3661 3662 /* 3663 * Decrease the mode buffer length by the size of 3664 * the compression page, to make sure the data 3665 * there doesn't get overwritten. 3666 */ 3667 mode_buffer_len -= sizeof (sa_comp_t); 3668 3669 /* 3670 * Now move the compression page that we presumably 3671 * got back down the memory chunk a little bit so 3672 * it doesn't get spammed. 3673 */ 3674 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3675 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3676 3677 /* 3678 * Now, we issue another mode sense and just ask 3679 * for the block descriptor, etc. 3680 */ 3681 3682 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3683 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3684 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3685 SCSIOP_TIMEOUT); 3686 3687 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3688 softc->device_stats); 3689 3690 if (error != 0) 3691 goto sagetparamsexit; 3692 } 3693 3694 if (params_to_get & SA_PARAM_BLOCKSIZE) 3695 *blocksize = scsi_3btoul(mode_blk->blklen); 3696 3697 if (params_to_get & SA_PARAM_NUMBLOCKS) 3698 *numblocks = scsi_3btoul(mode_blk->nblocks); 3699 3700 if (params_to_get & SA_PARAM_BUFF_MODE) 3701 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 3702 3703 if (params_to_get & SA_PARAM_DENSITY) 3704 *density = mode_blk->density; 3705 3706 if (params_to_get & SA_PARAM_WP) 3707 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 3708 3709 if (params_to_get & SA_PARAM_SPEED) 3710 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 3711 3712 if (params_to_get & SA_PARAM_COMPRESSION) { 3713 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 3714 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3715 struct scsi_data_compression_page *cp = &ntcs->dcomp; 3716 *comp_supported = 3717 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 3718 *comp_enabled = 3719 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 3720 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 3721 } else { 3722 struct scsi_dev_conf_page *cp = &ntcs->dconf; 3723 /* 3724 * We don't really know whether this device supports 3725 * Data Compression if the algorithm field is 3726 * zero. Just say we do. 3727 */ 3728 *comp_supported = TRUE; 3729 *comp_enabled = 3730 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 3731 *comp_algorithm = cp->sel_comp_alg; 3732 } 3733 if (tcs != NULL) 3734 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 3735 } 3736 3737 if ((params_to_get & SA_PARAM_DENSITY_EXT) 3738 && (softc->scsi_rev >= SCSI_REV_SPC)) { 3739 int i; 3740 3741 for (i = 0; i < SA_DENSITY_TYPES; i++) { 3742 scsi_report_density_support(&ccb->csio, 3743 /*retries*/ 1, 3744 /*cbfcnp*/ sadone, 3745 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3746 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 3747 /*medium_type*/ softc->density_type_bits[i] & 3748 SRDS_MEDIUM_TYPE, 3749 /*data_ptr*/ softc->density_info[i], 3750 /*length*/ sizeof(softc->density_info[i]), 3751 /*sense_len*/ SSD_FULL_SIZE, 3752 /*timeout*/ REP_DENSITY_TIMEOUT); 3753 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3754 softc->device_stats); 3755 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3756 3757 /* 3758 * Some tape drives won't support this command at 3759 * all, but hopefully we'll minimize that with the 3760 * check for SPC or greater support above. If they 3761 * don't support the default report (neither the 3762 * MEDIA or MEDIUM_TYPE bits set), then there is 3763 * really no point in continuing on to look for 3764 * other reports. 3765 */ 3766 if ((error != 0) 3767 || (status != CAM_REQ_CMP)) { 3768 error = 0; 3769 softc->density_info_valid[i] = 0; 3770 if (softc->density_type_bits[i] == 0) 3771 break; 3772 else 3773 continue; 3774 } 3775 softc->density_info_valid[i] = ccb->csio.dxfer_len - 3776 ccb->csio.resid; 3777 } 3778 } 3779 3780 /* 3781 * Get logical block protection parameters if the drive supports it. 3782 */ 3783 if ((params_to_get & SA_PARAM_LBP) 3784 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 3785 struct scsi_mode_header_10 *mode10_hdr; 3786 struct scsi_control_data_prot_subpage *dp_page; 3787 struct scsi_mode_sense_10 *cdb; 3788 struct sa_prot_state *prot; 3789 int dp_len, returned_len; 3790 3791 if (dp_size == 0) 3792 dp_size = sizeof(*dp_page); 3793 3794 dp_len = sizeof(*mode10_hdr) + dp_size; 3795 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3796 if (mode10_hdr == NULL) { 3797 error = ENOMEM; 3798 goto sagetparamsexit; 3799 } 3800 3801 scsi_mode_sense_len(&ccb->csio, 3802 /*retries*/ 5, 3803 /*cbfcnp*/ sadone, 3804 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3805 /*dbd*/ TRUE, 3806 /*page_code*/ (prot_changeable == 0) ? 3807 SMS_PAGE_CTRL_CURRENT : 3808 SMS_PAGE_CTRL_CHANGEABLE, 3809 /*page*/ SMS_CONTROL_MODE_PAGE, 3810 /*param_buf*/ (uint8_t *)mode10_hdr, 3811 /*param_len*/ dp_len, 3812 /*minimum_cmd_size*/ 10, 3813 /*sense_len*/ SSD_FULL_SIZE, 3814 /*timeout*/ SCSIOP_TIMEOUT); 3815 /* 3816 * XXX KDM we need to be able to set the subpage in the 3817 * fill function. 3818 */ 3819 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 3820 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 3821 3822 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3823 softc->device_stats); 3824 if (error != 0) { 3825 free(mode10_hdr, M_SCSISA); 3826 goto sagetparamsexit; 3827 } 3828 3829 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3830 if (status != CAM_REQ_CMP) { 3831 error = EINVAL; 3832 free(mode10_hdr, M_SCSISA); 3833 goto sagetparamsexit; 3834 } 3835 3836 /* 3837 * The returned data length at least has to be long enough 3838 * for us to look at length in the mode page header. 3839 */ 3840 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 3841 if (returned_len < sizeof(mode10_hdr->data_length)) { 3842 error = EINVAL; 3843 free(mode10_hdr, M_SCSISA); 3844 goto sagetparamsexit; 3845 } 3846 3847 returned_len = min(returned_len, 3848 sizeof(mode10_hdr->data_length) + 3849 scsi_2btoul(mode10_hdr->data_length)); 3850 3851 dp_page = (struct scsi_control_data_prot_subpage *) 3852 &mode10_hdr[1]; 3853 3854 /* 3855 * We also have to have enough data to include the prot_bits 3856 * in the subpage. 3857 */ 3858 if (returned_len < (sizeof(*mode10_hdr) + 3859 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 3860 + sizeof(dp_page->prot_bits))) { 3861 error = EINVAL; 3862 free(mode10_hdr, M_SCSISA); 3863 goto sagetparamsexit; 3864 } 3865 3866 prot = &softc->prot_info.cur_prot_state; 3867 prot->prot_method = dp_page->prot_method; 3868 prot->pi_length = dp_page->pi_length & 3869 SA_CTRL_DP_PI_LENGTH_MASK; 3870 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 3871 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 3872 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 3873 prot->initialized = 1; 3874 3875 if (prot_page != NULL) 3876 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 3877 sizeof(*dp_page))); 3878 3879 free(mode10_hdr, M_SCSISA); 3880 } 3881 3882 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3883 int idx; 3884 char *xyz = mode_buffer; 3885 xpt_print_path(periph->path); 3886 printf("Mode Sense Data="); 3887 for (idx = 0; idx < mode_buffer_len; idx++) 3888 printf(" 0x%02x", xyz[idx] & 0xff); 3889 printf("\n"); 3890 } 3891 3892sagetparamsexit: 3893 3894 xpt_release_ccb(ccb); 3895 free(mode_buffer, M_SCSISA); 3896 return (error); 3897} 3898 3899/* 3900 * Set protection information to the pending protection information stored 3901 * in the softc. 3902 */ 3903static int 3904sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 3905{ 3906 struct sa_softc *softc; 3907 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 3908 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 3909 union ccb *ccb; 3910 uint8_t current_speed; 3911 size_t dp_size, dp_page_length; 3912 int dp_len, buff_mode; 3913 int error; 3914 3915 softc = (struct sa_softc *)periph->softc; 3916 mode10_hdr = NULL; 3917 mode10_changeable = NULL; 3918 ccb = NULL; 3919 3920 /* 3921 * Start off with the size set to the actual length of the page 3922 * that we have defined. 3923 */ 3924 dp_size = sizeof(*dp_changeable); 3925 dp_page_length = dp_size - 3926 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 3927 3928retry_length: 3929 3930 dp_len = sizeof(*mode10_changeable) + dp_size; 3931 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3932 if (mode10_changeable == NULL) { 3933 error = ENOMEM; 3934 goto bailout; 3935 } 3936 3937 dp_changeable = 3938 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 3939 3940 /* 3941 * First get the data protection page changeable parameters mask. 3942 * We need to know which parameters the drive supports changing. 3943 * We also need to know what the drive claims that its page length 3944 * is. The reason is that IBM drives in particular are very picky 3945 * about the page length. They want it (the length set in the 3946 * page structure itself) to be 28 bytes, and they want the 3947 * parameter list length specified in the mode select header to be 3948 * 40 bytes. So, to work with IBM drives as well as any other tape 3949 * drive, find out what the drive claims the page length is, and 3950 * make sure that we match that. 3951 */ 3952 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3953 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3954 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 3955 if (error != 0) 3956 goto bailout; 3957 3958 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 3959 dp_page_length = scsi_2btoul(dp_changeable->length); 3960 dp_size = dp_page_length + 3961 __offsetof(struct scsi_control_data_prot_subpage, 3962 prot_method); 3963 free(mode10_changeable, M_SCSISA); 3964 mode10_changeable = NULL; 3965 goto retry_length; 3966 } 3967 3968 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3969 if (mode10_hdr == NULL) { 3970 error = ENOMEM; 3971 goto bailout; 3972 } 3973 3974 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 3975 3976 /* 3977 * Now grab the actual current settings in the page. 3978 */ 3979 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3980 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3981 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 3982 if (error != 0) 3983 goto bailout; 3984 3985 /* These two fields need to be 0 for MODE SELECT */ 3986 scsi_ulto2b(0, mode10_hdr->data_length); 3987 mode10_hdr->medium_type = 0; 3988 /* We are not including a block descriptor */ 3989 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 3990 3991 mode10_hdr->dev_spec = current_speed; 3992 /* if set, set single-initiator buffering mode */ 3993 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 3994 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 3995 } 3996 3997 /* 3998 * For each field, make sure that the drive allows changing it 3999 * before bringing in the user's setting. 4000 */ 4001 if (dp_changeable->prot_method != 0) 4002 dp_page->prot_method = new_prot->prot_method; 4003 4004 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 4005 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 4006 dp_page->pi_length |= (new_prot->pi_length & 4007 SA_CTRL_DP_PI_LENGTH_MASK); 4008 } 4009 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 4010 if (new_prot->lbp_w) 4011 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 4012 else 4013 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 4014 } 4015 4016 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 4017 if (new_prot->lbp_r) 4018 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 4019 else 4020 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 4021 } 4022 4023 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 4024 if (new_prot->rbdp) 4025 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 4026 else 4027 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 4028 } 4029 4030 ccb = cam_periph_getccb(periph, 1); 4031 4032 scsi_mode_select_len(&ccb->csio, 4033 /*retries*/ 5, 4034 /*cbfcnp*/ sadone, 4035 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4036 /*scsi_page_fmt*/ TRUE, 4037 /*save_pages*/ FALSE, 4038 /*param_buf*/ (uint8_t *)mode10_hdr, 4039 /*param_len*/ dp_len, 4040 /*minimum_cmd_size*/ 10, 4041 /*sense_len*/ SSD_FULL_SIZE, 4042 /*timeout*/ SCSIOP_TIMEOUT); 4043 4044 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4045 if (error != 0) 4046 goto bailout; 4047 4048 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4049 error = EINVAL; 4050 goto bailout; 4051 } 4052 4053 /* 4054 * The operation was successful. We could just copy the settings 4055 * the user requested, but just in case the drive ignored some of 4056 * our settings, let's ask for status again. 4057 */ 4058 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4059 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4060 NULL, NULL, dp_page, dp_size, 0); 4061 4062bailout: 4063 if (ccb != NULL) 4064 xpt_release_ccb(ccb); 4065 free(mode10_hdr, M_SCSISA); 4066 free(mode10_changeable, M_SCSISA); 4067 return (error); 4068} 4069 4070/* 4071 * The purpose of this function is to set one of four different parameters 4072 * for a tape drive: 4073 * - blocksize 4074 * - density 4075 * - compression / compression algorithm 4076 * - buffering mode 4077 * 4078 * The assumption is that this will be called from saioctl(), and therefore 4079 * from a process context. Thus the waiting malloc calls below. If that 4080 * assumption ever changes, the malloc calls should be changed to be 4081 * NOWAIT mallocs. 4082 * 4083 * Any or all of the four parameters may be set when this function is 4084 * called. It should handle setting more than one parameter at once. 4085 */ 4086static int 4087sasetparams(struct cam_periph *periph, sa_params params_to_set, 4088 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4089 u_int32_t sense_flags) 4090{ 4091 struct sa_softc *softc; 4092 u_int32_t current_blocksize; 4093 u_int32_t current_calg; 4094 u_int8_t current_density; 4095 u_int8_t current_speed; 4096 int comp_enabled, comp_supported; 4097 void *mode_buffer; 4098 int mode_buffer_len; 4099 struct scsi_mode_header_6 *mode_hdr; 4100 struct scsi_mode_blk_desc *mode_blk; 4101 sa_comp_t *ccomp, *cpage; 4102 int buff_mode; 4103 union ccb *ccb = NULL; 4104 int error; 4105 4106 softc = (struct sa_softc *)periph->softc; 4107 4108 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4109 if (ccomp == NULL) 4110 return (ENOMEM); 4111 4112 /* 4113 * Since it doesn't make sense to set the number of blocks, or 4114 * write protection, we won't try to get the current value. We 4115 * always want to get the blocksize, so we can set it back to the 4116 * proper value. 4117 */ 4118 error = sagetparams(periph, 4119 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4120 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4121 ¤t_speed, &comp_supported, &comp_enabled, 4122 ¤t_calg, ccomp, NULL, 0, 0); 4123 4124 if (error != 0) { 4125 free(ccomp, M_SCSISA); 4126 return (error); 4127 } 4128 4129 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4130 if (params_to_set & SA_PARAM_COMPRESSION) 4131 mode_buffer_len += sizeof (sa_comp_t); 4132 4133 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4134 if (mode_buffer == NULL) { 4135 free(ccomp, M_SCSISA); 4136 return (ENOMEM); 4137 } 4138 4139 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4140 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4141 4142 ccb = cam_periph_getccb(periph, 1); 4143 4144retry: 4145 4146 if (params_to_set & SA_PARAM_COMPRESSION) { 4147 if (mode_blk) { 4148 cpage = (sa_comp_t *)&mode_blk[1]; 4149 } else { 4150 cpage = (sa_comp_t *)&mode_hdr[1]; 4151 } 4152 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4153 cpage->hdr.pagecode &= ~0x80; 4154 } else 4155 cpage = NULL; 4156 4157 /* 4158 * If the caller wants us to set the blocksize, use the one they 4159 * pass in. Otherwise, use the blocksize we got back from the 4160 * mode select above. 4161 */ 4162 if (mode_blk) { 4163 if (params_to_set & SA_PARAM_BLOCKSIZE) 4164 scsi_ulto3b(blocksize, mode_blk->blklen); 4165 else 4166 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4167 4168 /* 4169 * Set density if requested, else preserve old density. 4170 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4171 * devices, else density we've latched up in our softc. 4172 */ 4173 if (params_to_set & SA_PARAM_DENSITY) { 4174 mode_blk->density = density; 4175 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4176 mode_blk->density = SCSI_SAME_DENSITY; 4177 } else { 4178 mode_blk->density = softc->media_density; 4179 } 4180 } 4181 4182 /* 4183 * For mode selects, these two fields must be zero. 4184 */ 4185 mode_hdr->data_length = 0; 4186 mode_hdr->medium_type = 0; 4187 4188 /* set the speed to the current value */ 4189 mode_hdr->dev_spec = current_speed; 4190 4191 /* if set, set single-initiator buffering mode */ 4192 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4193 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4194 } 4195 4196 if (mode_blk) 4197 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4198 else 4199 mode_hdr->blk_desc_len = 0; 4200 4201 /* 4202 * First, if the user wants us to set the compression algorithm or 4203 * just turn compression on, check to make sure that this drive 4204 * supports compression. 4205 */ 4206 if (params_to_set & SA_PARAM_COMPRESSION) { 4207 /* 4208 * If the compression algorithm is 0, disable compression. 4209 * If the compression algorithm is non-zero, enable 4210 * compression and set the compression type to the 4211 * specified compression algorithm, unless the algorithm is 4212 * MT_COMP_ENABLE. In that case, we look at the 4213 * compression algorithm that is currently set and if it is 4214 * non-zero, we leave it as-is. If it is zero, and we have 4215 * saved a compression algorithm from a time when 4216 * compression was enabled before, set the compression to 4217 * the saved value. 4218 */ 4219 switch (ccomp->hdr.pagecode & ~0x80) { 4220 case SA_DEVICE_CONFIGURATION_PAGE: 4221 { 4222 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4223 if (calg == 0) { 4224 dcp->sel_comp_alg = SA_COMP_NONE; 4225 break; 4226 } 4227 if (calg != MT_COMP_ENABLE) { 4228 dcp->sel_comp_alg = calg; 4229 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4230 softc->saved_comp_algorithm != 0) { 4231 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4232 } 4233 break; 4234 } 4235 case SA_DATA_COMPRESSION_PAGE: 4236 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4237 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4238 if (calg == 0) { 4239 /* 4240 * Disable compression, but leave the 4241 * decompression and the capability bit 4242 * alone. 4243 */ 4244 dcp->dce_and_dcc = SA_DCP_DCC; 4245 dcp->dde_and_red |= SA_DCP_DDE; 4246 break; 4247 } 4248 /* enable compression && decompression */ 4249 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4250 dcp->dde_and_red |= SA_DCP_DDE; 4251 /* 4252 * If there, use compression algorithm from caller. 4253 * Otherwise, if there's a saved compression algorithm 4254 * and there is no current algorithm, use the saved 4255 * algorithm. Else parrot back what we got and hope 4256 * for the best. 4257 */ 4258 if (calg != MT_COMP_ENABLE) { 4259 scsi_ulto4b(calg, dcp->comp_algorithm); 4260 scsi_ulto4b(calg, dcp->decomp_algorithm); 4261 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4262 softc->saved_comp_algorithm != 0) { 4263 scsi_ulto4b(softc->saved_comp_algorithm, 4264 dcp->comp_algorithm); 4265 scsi_ulto4b(softc->saved_comp_algorithm, 4266 dcp->decomp_algorithm); 4267 } 4268 break; 4269 } 4270 /* 4271 * Compression does not appear to be supported- 4272 * at least via the DATA COMPRESSION page. It 4273 * would be too much to ask us to believe that 4274 * the page itself is supported, but incorrectly 4275 * reports an ability to manipulate data compression, 4276 * so we'll assume that this device doesn't support 4277 * compression. We can just fall through for that. 4278 */ 4279 /* FALLTHROUGH */ 4280 default: 4281 /* 4282 * The drive doesn't seem to support compression, 4283 * so turn off the set compression bit. 4284 */ 4285 params_to_set &= ~SA_PARAM_COMPRESSION; 4286 xpt_print(periph->path, 4287 "device does not seem to support compression\n"); 4288 4289 /* 4290 * If that was the only thing the user wanted us to set, 4291 * clean up allocated resources and return with 4292 * 'operation not supported'. 4293 */ 4294 if (params_to_set == SA_PARAM_NONE) { 4295 free(mode_buffer, M_SCSISA); 4296 xpt_release_ccb(ccb); 4297 return (ENODEV); 4298 } 4299 4300 /* 4301 * That wasn't the only thing the user wanted us to set. 4302 * So, decrease the stated mode buffer length by the 4303 * size of the compression mode page. 4304 */ 4305 mode_buffer_len -= sizeof(sa_comp_t); 4306 } 4307 } 4308 4309 /* It is safe to retry this operation */ 4310 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 4311 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4312 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4313 4314 error = cam_periph_runccb(ccb, saerror, 0, 4315 sense_flags, softc->device_stats); 4316 4317 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4318 int idx; 4319 char *xyz = mode_buffer; 4320 xpt_print_path(periph->path); 4321 printf("Err%d, Mode Select Data=", error); 4322 for (idx = 0; idx < mode_buffer_len; idx++) 4323 printf(" 0x%02x", xyz[idx] & 0xff); 4324 printf("\n"); 4325 } 4326 4327 4328 if (error) { 4329 /* 4330 * If we can, try without setting density/blocksize. 4331 */ 4332 if (mode_blk) { 4333 if ((params_to_set & 4334 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4335 mode_blk = NULL; 4336 goto retry; 4337 } 4338 } else { 4339 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4340 cpage = (sa_comp_t *)&mode_blk[1]; 4341 } 4342 4343 /* 4344 * If we were setting the blocksize, and that failed, we 4345 * want to set it to its original value. If we weren't 4346 * setting the blocksize, we don't want to change it. 4347 */ 4348 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4349 4350 /* 4351 * Set density if requested, else preserve old density. 4352 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4353 * devices, else density we've latched up in our softc. 4354 */ 4355 if (params_to_set & SA_PARAM_DENSITY) { 4356 mode_blk->density = current_density; 4357 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4358 mode_blk->density = SCSI_SAME_DENSITY; 4359 } else { 4360 mode_blk->density = softc->media_density; 4361 } 4362 4363 if (params_to_set & SA_PARAM_COMPRESSION) 4364 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4365 4366 /* 4367 * The retry count is the only CCB field that might have been 4368 * changed that we care about, so reset it back to 1. 4369 */ 4370 ccb->ccb_h.retry_count = 1; 4371 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4372 softc->device_stats); 4373 } 4374 4375 xpt_release_ccb(ccb); 4376 4377 if (ccomp != NULL) 4378 free(ccomp, M_SCSISA); 4379 4380 if (params_to_set & SA_PARAM_COMPRESSION) { 4381 if (error) { 4382 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4383 /* 4384 * Even if we get an error setting compression, 4385 * do not say that we don't support it. We could 4386 * have been wrong, or it may be media specific. 4387 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4388 */ 4389 softc->saved_comp_algorithm = softc->comp_algorithm; 4390 softc->comp_algorithm = 0; 4391 } else { 4392 softc->flags |= SA_FLAG_COMP_ENABLED; 4393 softc->comp_algorithm = calg; 4394 } 4395 } 4396 4397 free(mode_buffer, M_SCSISA); 4398 return (error); 4399} 4400 4401static int 4402saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4403 struct mtextget *g) 4404{ 4405 int indent, error; 4406 char tmpstr[80]; 4407 struct sa_softc *softc; 4408 int tmpint; 4409 uint32_t maxio_tmp; 4410 struct ccb_getdev cgd; 4411 4412 softc = (struct sa_softc *)periph->softc; 4413 4414 error = 0; 4415 4416 error = sagetparams_common(dev, periph); 4417 if (error) 4418 goto extget_bailout; 4419 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4420 sagetpos(periph); 4421 4422 indent = 0; 4423 SASBADDNODE(sb, indent, mtextget); 4424 /* 4425 * Basic CAM peripheral information. 4426 */ 4427 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4428 strlen(periph->periph_name) + 1); 4429 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4430 xpt_setup_ccb(&cgd.ccb_h, 4431 periph->path, 4432 CAM_PRIORITY_NORMAL); 4433 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4434 xpt_action((union ccb *)&cgd); 4435 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4436 g->status = MT_EXT_GET_ERROR; 4437 snprintf(g->error_str, sizeof(g->error_str), 4438 "Error %#x returned for XPT_GDEV_TYPE CCB", 4439 cgd.ccb_h.status); 4440 goto extget_bailout; 4441 } 4442 4443 cam_strvis(tmpstr, cgd.inq_data.vendor, 4444 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4445 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4446 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4447 4448 cam_strvis(tmpstr, cgd.inq_data.product, 4449 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4450 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4451 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4452 4453 cam_strvis(tmpstr, cgd.inq_data.revision, 4454 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4455 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4456 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4457 4458 if (cgd.serial_num_len > 0) { 4459 char *tmpstr2; 4460 size_t ts2_len; 4461 int ts2_malloc; 4462 4463 ts2_len = 0; 4464 4465 if (cgd.serial_num_len > sizeof(tmpstr)) { 4466 ts2_len = cgd.serial_num_len + 1; 4467 ts2_malloc = 1; 4468 tmpstr2 = malloc(ts2_len, M_SCSISA, M_WAITOK | M_ZERO); 4469 } else { 4470 ts2_len = sizeof(tmpstr); 4471 ts2_malloc = 0; 4472 tmpstr2 = tmpstr; 4473 } 4474 4475 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4476 ts2_len); 4477 4478 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4479 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4480 if (ts2_malloc != 0) 4481 free(tmpstr2, M_SCSISA); 4482 } else { 4483 /* 4484 * We return a serial_num element in any case, but it will 4485 * be empty if the device has no serial number. 4486 */ 4487 tmpstr[0] = '\0'; 4488 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4489 (ssize_t)0, "Serial Number"); 4490 } 4491 4492 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4493 "Maximum I/O size allowed by driver and controller"); 4494 4495 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4496 "Maximum I/O size reported by controller"); 4497 4498 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4499 "Maximum block size supported by tape drive and media"); 4500 4501 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4502 "Minimum block size supported by tape drive and media"); 4503 4504 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4505 "Block granularity supported by tape drive and media"); 4506 4507 maxio_tmp = min(softc->max_blk, softc->maxio); 4508 4509 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4510 "Maximum possible I/O size"); 4511 4512 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4513 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4514 4515 /* 4516 * XXX KDM include SIM, bus, target, LUN? 4517 */ 4518 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4519 tmpint = 0; 4520 else 4521 tmpint = 1; 4522 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4523 "Set to 1 if compression is supported, 0 if not"); 4524 if (softc->flags & SA_FLAG_COMP_ENABLED) 4525 tmpint = 1; 4526 else 4527 tmpint = 0; 4528 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4529 "Set to 1 if compression is enabled, 0 if not"); 4530 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4531 compression_algorithm, "Numeric compression algorithm"); 4532 4533 safillprot(softc, &indent, sb); 4534 4535 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4536 media_blocksize, "Block size reported by drive or set by user"); 4537 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4538 calculated_fileno, "Calculated file number, -1 if unknown"); 4539 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4540 calculated_rel_blkno, "Calculated block number relative to file, " 4541 "set to -1 if unknown"); 4542 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4543 reported_fileno, "File number reported by drive, -1 if unknown"); 4544 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4545 reported_blkno, "Block number relative to BOP/BOT reported by " 4546 "drive, -1 if unknown"); 4547 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4548 partition, "Current partition number, 0 is the default"); 4549 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4550 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4551 "not, -1 if unknown"); 4552 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4553 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4554 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4555 "Set to 1 if drive is past programmable early warning, 0 if not, " 4556 "-1 if unknown"); 4557 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4558 residual, "Residual for the last I/O"); 4559 /* 4560 * XXX KDM should we send a string with the current driver 4561 * status already decoded instead of a numeric value? 4562 */ 4563 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4564 "Current state of the driver"); 4565 4566 safilldensitysb(softc, &indent, sb); 4567 4568 SASBENDNODE(sb, indent, mtextget); 4569 4570extget_bailout: 4571 4572 return (error); 4573} 4574 4575static int 4576saparamget(struct sa_softc *softc, struct sbuf *sb) 4577{ 4578 int indent; 4579 4580 indent = 0; 4581 SASBADDNODE(sb, indent, mtparamget); 4582 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4583 "Suppress an error on underlength variable reads"); 4584 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4585 "Return an error to warn that end of tape is approaching"); 4586 safillprot(softc, &indent, sb); 4587 SASBENDNODE(sb, indent, mtparamget); 4588 4589 return (0); 4590} 4591 4592static void 4593saprevent(struct cam_periph *periph, int action) 4594{ 4595 struct sa_softc *softc; 4596 union ccb *ccb; 4597 int error, sf; 4598 4599 softc = (struct sa_softc *)periph->softc; 4600 4601 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4602 return; 4603 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4604 return; 4605 4606 /* 4607 * We can be quiet about illegal requests. 4608 */ 4609 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4610 sf = 0; 4611 } else 4612 sf = SF_QUIET_IR; 4613 4614 ccb = cam_periph_getccb(periph, 1); 4615 4616 /* It is safe to retry this operation */ 4617 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 4618 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4619 4620 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4621 if (error == 0) { 4622 if (action == PR_ALLOW) 4623 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4624 else 4625 softc->flags |= SA_FLAG_TAPE_LOCKED; 4626 } 4627 4628 xpt_release_ccb(ccb); 4629} 4630 4631static int 4632sarewind(struct cam_periph *periph) 4633{ 4634 union ccb *ccb; 4635 struct sa_softc *softc; 4636 int error; 4637 4638 softc = (struct sa_softc *)periph->softc; 4639 4640 ccb = cam_periph_getccb(periph, 1); 4641 4642 /* It is safe to retry this operation */ 4643 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 4644 SSD_FULL_SIZE, REWIND_TIMEOUT); 4645 4646 softc->dsreg = MTIO_DSREG_REW; 4647 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4648 softc->dsreg = MTIO_DSREG_REST; 4649 4650 xpt_release_ccb(ccb); 4651 if (error == 0) { 4652 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4653 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4654 } else { 4655 softc->fileno = softc->blkno = (daddr_t) -1; 4656 softc->partition = (daddr_t) -1; 4657 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4658 } 4659 return (error); 4660} 4661 4662static int 4663saspace(struct cam_periph *periph, int count, scsi_space_code code) 4664{ 4665 union ccb *ccb; 4666 struct sa_softc *softc; 4667 int error; 4668 4669 softc = (struct sa_softc *)periph->softc; 4670 4671 ccb = cam_periph_getccb(periph, 1); 4672 4673 /* This cannot be retried */ 4674 4675 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 4676 SSD_FULL_SIZE, SPACE_TIMEOUT); 4677 4678 /* 4679 * Clear residual because we will be using it. 4680 */ 4681 softc->last_ctl_resid = 0; 4682 4683 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4684 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4685 softc->dsreg = MTIO_DSREG_REST; 4686 4687 xpt_release_ccb(ccb); 4688 4689 /* 4690 * If a spacing operation has failed, we need to invalidate 4691 * this mount. 4692 * 4693 * If the spacing operation was setmarks or to end of recorded data, 4694 * we no longer know our relative position. 4695 * 4696 * If the spacing operations was spacing files in reverse, we 4697 * take account of the residual, but still check against less 4698 * than zero- if we've gone negative, we must have hit BOT. 4699 * 4700 * If the spacing operations was spacing records in reverse and 4701 * we have a residual, we've either hit BOT or hit a filemark. 4702 * In the former case, we know our new record number (0). In 4703 * the latter case, we have absolutely no idea what the real 4704 * record number is- we've stopped between the end of the last 4705 * record in the previous file and the filemark that stopped 4706 * our spacing backwards. 4707 */ 4708 if (error) { 4709 softc->fileno = softc->blkno = (daddr_t) -1; 4710 softc->rep_blkno = softc->partition = (daddr_t) -1; 4711 softc->rep_fileno = (daddr_t) -1; 4712 } else if (code == SS_SETMARKS || code == SS_EOD) { 4713 softc->fileno = softc->blkno = (daddr_t) -1; 4714 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4715 softc->fileno += (count - softc->last_ctl_resid); 4716 if (softc->fileno < 0) /* we must of hit BOT */ 4717 softc->fileno = 0; 4718 softc->blkno = 0; 4719 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4720 softc->blkno += (count - softc->last_ctl_resid); 4721 if (count < 0) { 4722 if (softc->last_ctl_resid || softc->blkno < 0) { 4723 if (softc->fileno == 0) { 4724 softc->blkno = 0; 4725 } else { 4726 softc->blkno = (daddr_t) -1; 4727 } 4728 } 4729 } 4730 } 4731 if (error == 0) 4732 sagetpos(periph); 4733 4734 return (error); 4735} 4736 4737static int 4738sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4739{ 4740 union ccb *ccb; 4741 struct sa_softc *softc; 4742 int error, nwm = 0; 4743 4744 softc = (struct sa_softc *)periph->softc; 4745 if (softc->open_rdonly) 4746 return (EBADF); 4747 4748 ccb = cam_periph_getccb(periph, 1); 4749 /* 4750 * Clear residual because we will be using it. 4751 */ 4752 softc->last_ctl_resid = 0; 4753 4754 softc->dsreg = MTIO_DSREG_FMK; 4755 /* this *must* not be retried */ 4756 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 4757 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4758 softc->dsreg = MTIO_DSREG_REST; 4759 4760 4761 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4762 4763 if (error == 0 && nmarks) { 4764 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4765 nwm = nmarks - softc->last_ctl_resid; 4766 softc->filemarks += nwm; 4767 } 4768 4769 xpt_release_ccb(ccb); 4770 4771 /* 4772 * Update relative positions (if we're doing that). 4773 */ 4774 if (error) { 4775 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4776 } else if (softc->fileno != (daddr_t) -1) { 4777 softc->fileno += nwm; 4778 softc->blkno = 0; 4779 } 4780 4781 /* 4782 * Ask the tape drive for position information. 4783 */ 4784 sagetpos(periph); 4785 4786 /* 4787 * If we got valid position information, since we just wrote a file 4788 * mark, we know we're at the file mark and block 0 after that 4789 * filemark. 4790 */ 4791 if (softc->rep_fileno != (daddr_t) -1) { 4792 softc->fileno = softc->rep_fileno; 4793 softc->blkno = 0; 4794 } 4795 4796 return (error); 4797} 4798 4799static int 4800sagetpos(struct cam_periph *periph) 4801{ 4802 union ccb *ccb; 4803 struct scsi_tape_position_long_data long_pos; 4804 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4805 int error; 4806 4807 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4808 softc->rep_fileno = (daddr_t) -1; 4809 softc->rep_blkno = (daddr_t) -1; 4810 softc->bop = softc->eop = softc->bpew = -1; 4811 return (EOPNOTSUPP); 4812 } 4813 4814 bzero(&long_pos, sizeof(long_pos)); 4815 4816 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4817 scsi_read_position_10(&ccb->csio, 4818 /*retries*/ 1, 4819 /*cbfcnp*/ sadone, 4820 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4821 /*service_action*/ SA_RPOS_LONG_FORM, 4822 /*data_ptr*/ (uint8_t *)&long_pos, 4823 /*length*/ sizeof(long_pos), 4824 /*sense_len*/ SSD_FULL_SIZE, 4825 /*timeout*/ SCSIOP_TIMEOUT); 4826 4827 softc->dsreg = MTIO_DSREG_RBSY; 4828 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4829 softc->device_stats); 4830 softc->dsreg = MTIO_DSREG_REST; 4831 4832 if (error == 0) { 4833 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4834 /* 4835 * If the drive doesn't know what file mark it is 4836 * on, our calculated filemark isn't going to be 4837 * accurate either. 4838 */ 4839 softc->fileno = (daddr_t) -1; 4840 softc->rep_fileno = (daddr_t) -1; 4841 } else { 4842 softc->fileno = softc->rep_fileno = 4843 scsi_8btou64(long_pos.logical_file_num); 4844 } 4845 4846 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4847 softc->partition = (daddr_t) -1; 4848 softc->rep_blkno = (daddr_t) -1; 4849 /* 4850 * If the tape drive doesn't know its block 4851 * position, we can't claim to know it either. 4852 */ 4853 softc->blkno = (daddr_t) -1; 4854 } else { 4855 softc->partition = scsi_4btoul(long_pos.partition); 4856 softc->rep_blkno = 4857 scsi_8btou64(long_pos.logical_object_num); 4858 } 4859 if (long_pos.flags & SA_RPOS_LONG_BOP) 4860 softc->bop = 1; 4861 else 4862 softc->bop = 0; 4863 4864 if (long_pos.flags & SA_RPOS_LONG_EOP) 4865 softc->eop = 1; 4866 else 4867 softc->eop = 0; 4868 4869 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 4870 || (softc->set_pews_status != 0)) { 4871 softc->bpew = 1; 4872 if (softc->set_pews_status > 0) 4873 softc->set_pews_status--; 4874 } else 4875 softc->bpew = 0; 4876 } else if (error == EINVAL) { 4877 /* 4878 * If this drive returned an invalid-request type error, 4879 * then it likely doesn't support the long form report. 4880 */ 4881 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4882 } 4883 4884 if (error != 0) { 4885 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4886 softc->partition = (daddr_t) -1; 4887 softc->bop = softc->eop = softc->bpew = -1; 4888 } 4889 4890 xpt_release_ccb(ccb); 4891 4892 return (error); 4893} 4894 4895static int 4896sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4897{ 4898 struct scsi_tape_position_data loc; 4899 union ccb *ccb; 4900 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4901 int error; 4902 4903 /* 4904 * We try and flush any buffered writes here if we were writing 4905 * and we're trying to get hardware block position. It eats 4906 * up performance substantially, but I'm wary of drive firmware. 4907 * 4908 * I think that *logical* block position is probably okay- 4909 * but hardware block position might have to wait for data 4910 * to hit media to be valid. Caveat Emptor. 4911 */ 4912 4913 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4914 error = sawritefilemarks(periph, 0, 0, 0); 4915 if (error && error != EACCES) 4916 return (error); 4917 } 4918 4919 ccb = cam_periph_getccb(periph, 1); 4920 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 4921 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4922 softc->dsreg = MTIO_DSREG_RBSY; 4923 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4924 softc->dsreg = MTIO_DSREG_REST; 4925 4926 if (error == 0) { 4927 if (loc.flags & SA_RPOS_UNCERTAIN) { 4928 error = EINVAL; /* nothing is certain */ 4929 } else { 4930 *blkptr = scsi_4btoul(loc.firstblk); 4931 } 4932 } 4933 4934 xpt_release_ccb(ccb); 4935 return (error); 4936} 4937 4938static int 4939sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4940{ 4941 union ccb *ccb; 4942 struct sa_softc *softc; 4943 int locate16; 4944 int immed, cp; 4945 int error; 4946 4947 /* 4948 * We used to try and flush any buffered writes here. 4949 * Now we push this onto user applications to either 4950 * flush the pending writes themselves (via a zero count 4951 * WRITE FILEMARKS command) or they can trust their tape 4952 * drive to do this correctly for them. 4953 */ 4954 4955 softc = (struct sa_softc *)periph->softc; 4956 ccb = cam_periph_getccb(periph, 1); 4957 4958 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4959 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4960 4961 /* 4962 * Determine whether we have to use LOCATE or LOCATE16. The hard 4963 * bit is only possible with LOCATE, but the new ioctls do not 4964 * allow setting that bit. So we can't get into the situation of 4965 * having the hard bit set with a block address that is larger than 4966 * 32-bits. 4967 */ 4968 if (hard != 0) 4969 locate16 = 0; 4970 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4971 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4972 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4973 locate16 = 1; 4974 else 4975 locate16 = 0; 4976 4977 if (locate16 != 0) { 4978 scsi_locate_16(&ccb->csio, 4979 /*retries*/ 1, 4980 /*cbfcnp*/ sadone, 4981 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4982 /*immed*/ immed, 4983 /*cp*/ cp, 4984 /*dest_type*/ locate_info->dest_type, 4985 /*bam*/ locate_info->block_address_mode, 4986 /*partition*/ locate_info->partition, 4987 /*logical_id*/ locate_info->logical_id, 4988 /*sense_len*/ SSD_FULL_SIZE, 4989 /*timeout*/ SPACE_TIMEOUT); 4990 } else { 4991 scsi_locate_10(&ccb->csio, 4992 /*retries*/ 1, 4993 /*cbfcnp*/ sadone, 4994 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4995 /*immed*/ immed, 4996 /*cp*/ cp, 4997 /*hard*/ hard, 4998 /*partition*/ locate_info->partition, 4999 /*block_address*/ locate_info->logical_id, 5000 /*sense_len*/ SSD_FULL_SIZE, 5001 /*timeout*/ SPACE_TIMEOUT); 5002 } 5003 5004 softc->dsreg = MTIO_DSREG_POS; 5005 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5006 softc->dsreg = MTIO_DSREG_REST; 5007 xpt_release_ccb(ccb); 5008 5009 /* 5010 * We assume the calculated file and block numbers are unknown 5011 * unless we have enough information to populate them. 5012 */ 5013 softc->fileno = softc->blkno = (daddr_t) -1; 5014 5015 /* 5016 * If the user requested changing the partition and the request 5017 * succeeded, note the partition. 5018 */ 5019 if ((error == 0) 5020 && (cp != 0)) 5021 softc->partition = locate_info->partition; 5022 else 5023 softc->partition = (daddr_t) -1; 5024 5025 if (error == 0) { 5026 switch (locate_info->dest_type) { 5027 case MT_LOCATE_DEST_FILE: 5028 /* 5029 * This is the only case where we can reliably 5030 * calculate the file and block numbers. 5031 */ 5032 softc->fileno = locate_info->logical_id; 5033 softc->blkno = 0; 5034 break; 5035 case MT_LOCATE_DEST_OBJECT: 5036 case MT_LOCATE_DEST_SET: 5037 case MT_LOCATE_DEST_EOD: 5038 default: 5039 break; 5040 } 5041 } 5042 5043 /* 5044 * Ask the drive for current position information. 5045 */ 5046 sagetpos(periph); 5047 5048 return (error); 5049} 5050 5051static int 5052saretension(struct cam_periph *periph) 5053{ 5054 union ccb *ccb; 5055 struct sa_softc *softc; 5056 int error; 5057 5058 softc = (struct sa_softc *)periph->softc; 5059 5060 ccb = cam_periph_getccb(periph, 1); 5061 5062 /* It is safe to retry this operation */ 5063 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5064 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5065 5066 softc->dsreg = MTIO_DSREG_TEN; 5067 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5068 softc->dsreg = MTIO_DSREG_REST; 5069 5070 xpt_release_ccb(ccb); 5071 if (error == 0) { 5072 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5073 sagetpos(periph); 5074 } else 5075 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5076 return (error); 5077} 5078 5079static int 5080sareservereleaseunit(struct cam_periph *periph, int reserve) 5081{ 5082 union ccb *ccb; 5083 struct sa_softc *softc; 5084 int error; 5085 5086 softc = (struct sa_softc *)periph->softc; 5087 ccb = cam_periph_getccb(periph, 1); 5088 5089 /* It is safe to retry this operation */ 5090 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 5091 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5092 softc->dsreg = MTIO_DSREG_RBSY; 5093 error = cam_periph_runccb(ccb, saerror, 0, 5094 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5095 softc->dsreg = MTIO_DSREG_REST; 5096 xpt_release_ccb(ccb); 5097 5098 /* 5099 * If the error was Illegal Request, then the device doesn't support 5100 * RESERVE/RELEASE. This is not an error. 5101 */ 5102 if (error == EINVAL) { 5103 error = 0; 5104 } 5105 5106 return (error); 5107} 5108 5109static int 5110saloadunload(struct cam_periph *periph, int load) 5111{ 5112 union ccb *ccb; 5113 struct sa_softc *softc; 5114 int error; 5115 5116 softc = (struct sa_softc *)periph->softc; 5117 5118 ccb = cam_periph_getccb(periph, 1); 5119 5120 /* It is safe to retry this operation */ 5121 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5122 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5123 5124 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5125 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5126 softc->dsreg = MTIO_DSREG_REST; 5127 xpt_release_ccb(ccb); 5128 5129 if (error || load == 0) { 5130 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5131 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5132 } else if (error == 0) { 5133 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5134 sagetpos(periph); 5135 } 5136 return (error); 5137} 5138 5139static int 5140saerase(struct cam_periph *periph, int longerase) 5141{ 5142 5143 union ccb *ccb; 5144 struct sa_softc *softc; 5145 int error; 5146 5147 softc = (struct sa_softc *)periph->softc; 5148 if (softc->open_rdonly) 5149 return (EBADF); 5150 5151 ccb = cam_periph_getccb(periph, 1); 5152 5153 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5154 SSD_FULL_SIZE, ERASE_TIMEOUT); 5155 5156 softc->dsreg = MTIO_DSREG_ZER; 5157 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5158 softc->dsreg = MTIO_DSREG_REST; 5159 5160 xpt_release_ccb(ccb); 5161 return (error); 5162} 5163 5164/* 5165 * Fill an sbuf with density data in XML format. This particular macro 5166 * works for multi-byte integer fields. 5167 * 5168 * Note that 1 byte fields aren't supported here. The reason is that the 5169 * compiler does not evaluate the sizeof(), and assumes that any of the 5170 * sizes are possible for a given field. So passing in a multi-byte 5171 * field will result in a warning that the assignment makes an integer 5172 * from a pointer without a cast, if there is an assignment in the 1 byte 5173 * case. 5174 */ 5175#define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5176 len_to_go, cur_offset, desc){ \ 5177 size_t cur_field_len; \ 5178 \ 5179 cur_field_len = sizeof(dens_data->field); \ 5180 if (desc_remain < cur_field_len) { \ 5181 len_to_go -= desc_remain; \ 5182 cur_offset += desc_remain; \ 5183 continue; \ 5184 } \ 5185 len_to_go -= cur_field_len; \ 5186 cur_offset += cur_field_len; \ 5187 desc_remain -= cur_field_len; \ 5188 \ 5189 switch (sizeof(dens_data->field)) { \ 5190 case 1: \ 5191 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5192 "field width for SAFILLDENSFIELD")); \ 5193 break; \ 5194 case 2: \ 5195 SASBADDUINTDESC(sb, indent, \ 5196 scsi_2btoul(dens_data->field), %u, field, desc); \ 5197 break; \ 5198 case 3: \ 5199 SASBADDUINTDESC(sb, indent, \ 5200 scsi_3btoul(dens_data->field), %u, field, desc); \ 5201 break; \ 5202 case 4: \ 5203 SASBADDUINTDESC(sb, indent, \ 5204 scsi_4btoul(dens_data->field), %u, field, desc); \ 5205 break; \ 5206 case 8: \ 5207 SASBADDUINTDESC(sb, indent, \ 5208 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5209 field, desc); \ 5210 break; \ 5211 default: \ 5212 break; \ 5213 } \ 5214}; 5215/* 5216 * Fill an sbuf with density data in XML format. This particular macro 5217 * works for strings. 5218 */ 5219#define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5220 len_to_go, cur_offset, desc){ \ 5221 size_t cur_field_len; \ 5222 char tmpstr[32]; \ 5223 \ 5224 cur_field_len = sizeof(dens_data->field); \ 5225 if (desc_remain < cur_field_len) { \ 5226 len_to_go -= desc_remain; \ 5227 cur_offset += desc_remain; \ 5228 continue; \ 5229 } \ 5230 len_to_go -= cur_field_len; \ 5231 cur_offset += cur_field_len; \ 5232 desc_remain -= cur_field_len; \ 5233 \ 5234 cam_strvis(tmpstr, dens_data->field, \ 5235 sizeof(dens_data->field), sizeof(tmpstr)); \ 5236 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5237 strlen(tmpstr) + 1, desc); \ 5238}; 5239 5240/* 5241 * Fill an sbuf with density data descriptors. 5242 */ 5243static void 5244safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5245 int is_density) 5246{ 5247 struct scsi_density_hdr *hdr; 5248 uint32_t hdr_len; 5249 int len_to_go, cur_offset; 5250 int length_offset; 5251 int num_reports, need_close; 5252 5253 /* 5254 * We need at least the header length. Note that this isn't an 5255 * error, not all tape drives will have every data type. 5256 */ 5257 if (buf_len < sizeof(*hdr)) 5258 goto bailout; 5259 5260 5261 hdr = (struct scsi_density_hdr *)buf; 5262 hdr_len = scsi_2btoul(hdr->length); 5263 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5264 if (is_density) { 5265 length_offset = __offsetof(struct scsi_density_data, 5266 bits_per_mm); 5267 } else { 5268 length_offset = __offsetof(struct scsi_medium_type_data, 5269 num_density_codes); 5270 } 5271 cur_offset = sizeof(*hdr); 5272 5273 num_reports = 0; 5274 need_close = 0; 5275 5276 while (len_to_go > length_offset) { 5277 struct scsi_density_data *dens_data; 5278 struct scsi_medium_type_data *type_data; 5279 int desc_remain; 5280 size_t cur_field_len; 5281 5282 dens_data = NULL; 5283 type_data = NULL; 5284 5285 if (is_density) { 5286 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5287 if (dens_data->byte2 & SDD_DLV) 5288 desc_remain = scsi_2btoul(dens_data->length); 5289 else 5290 desc_remain = SDD_DEFAULT_LENGTH - 5291 length_offset; 5292 } else { 5293 type_data = (struct scsi_medium_type_data *) 5294 &buf[cur_offset]; 5295 desc_remain = scsi_2btoul(type_data->length); 5296 } 5297 5298 len_to_go -= length_offset; 5299 desc_remain = min(desc_remain, len_to_go); 5300 cur_offset += length_offset; 5301 5302 if (need_close != 0) { 5303 SASBENDNODE(sb, *indent, density_entry); 5304 } 5305 5306 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5307 num_reports++; 5308 need_close = 1; 5309 5310 if (is_density) { 5311 SASBADDUINTDESC(sb, *indent, 5312 dens_data->primary_density_code, %u, 5313 primary_density_code, "Primary Density Code"); 5314 SASBADDUINTDESC(sb, *indent, 5315 dens_data->secondary_density_code, %u, 5316 secondary_density_code, "Secondary Density Code"); 5317 SASBADDUINTDESC(sb, *indent, 5318 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5319 "Density Flags"); 5320 5321 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5322 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5323 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5324 desc_remain, len_to_go, cur_offset, "Media width"); 5325 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5326 desc_remain, len_to_go, cur_offset, 5327 "Number of Tracks"); 5328 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5329 desc_remain, len_to_go, cur_offset, "Capacity"); 5330 5331 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5332 desc_remain, len_to_go, cur_offset, 5333 "Assigning Organization"); 5334 5335 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5336 desc_remain, len_to_go, cur_offset, "Density Name"); 5337 5338 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5339 desc_remain, len_to_go, cur_offset, "Description"); 5340 } else { 5341 int i; 5342 5343 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5344 %u, medium_type, "Medium Type"); 5345 5346 cur_field_len = 5347 __offsetof(struct scsi_medium_type_data, 5348 media_width) - 5349 __offsetof(struct scsi_medium_type_data, 5350 num_density_codes); 5351 5352 if (desc_remain < cur_field_len) { 5353 len_to_go -= desc_remain; 5354 cur_offset += desc_remain; 5355 continue; 5356 } 5357 len_to_go -= cur_field_len; 5358 cur_offset += cur_field_len; 5359 desc_remain -= cur_field_len; 5360 5361 SASBADDINTDESC(sb, *indent, 5362 type_data->num_density_codes, %d, 5363 num_density_codes, "Number of Density Codes"); 5364 SASBADDNODE(sb, *indent, density_code_list); 5365 for (i = 0; i < type_data->num_density_codes; 5366 i++) { 5367 SASBADDUINTDESC(sb, *indent, 5368 type_data->primary_density_codes[i], %u, 5369 density_code, "Density Code"); 5370 } 5371 SASBENDNODE(sb, *indent, density_code_list); 5372 5373 SAFILLDENSSB(type_data, sb, *indent, media_width, 5374 desc_remain, len_to_go, cur_offset, 5375 "Media width"); 5376 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5377 desc_remain, len_to_go, cur_offset, 5378 "Medium length"); 5379 5380 /* 5381 * Account for the two reserved bytes. 5382 */ 5383 cur_field_len = sizeof(type_data->reserved2); 5384 if (desc_remain < cur_field_len) { 5385 len_to_go -= desc_remain; 5386 cur_offset += desc_remain; 5387 continue; 5388 } 5389 len_to_go -= cur_field_len; 5390 cur_offset += cur_field_len; 5391 desc_remain -= cur_field_len; 5392 5393 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5394 desc_remain, len_to_go, cur_offset, 5395 "Assigning Organization"); 5396 SAFILLDENSSBSTR(type_data, sb, *indent, 5397 medium_type_name, desc_remain, len_to_go, 5398 cur_offset, "Medium type name"); 5399 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5400 desc_remain, len_to_go, cur_offset, "Description"); 5401 5402 } 5403 } 5404 if (need_close != 0) { 5405 SASBENDNODE(sb, *indent, density_entry); 5406 } 5407 5408bailout: 5409 return; 5410} 5411 5412/* 5413 * Fill an sbuf with density data information 5414 */ 5415static void 5416safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5417{ 5418 int i, is_density; 5419 5420 SASBADDNODE(sb, *indent, mtdensity); 5421 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5422 "Current Medium Density"); 5423 is_density = 0; 5424 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5425 int tmpint; 5426 5427 if (softc->density_info_valid[i] == 0) 5428 continue; 5429 5430 SASBADDNODE(sb, *indent, density_report); 5431 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5432 tmpint = 1; 5433 is_density = 0; 5434 } else { 5435 tmpint = 0; 5436 is_density = 1; 5437 } 5438 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5439 "Medium type report"); 5440 5441 if (softc->density_type_bits[i] & SRDS_MEDIA) 5442 tmpint = 1; 5443 else 5444 tmpint = 0; 5445 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5446 "Media report"); 5447 5448 safilldenstypesb(sb, indent, softc->density_info[i], 5449 softc->density_info_valid[i], is_density); 5450 SASBENDNODE(sb, *indent, density_report); 5451 } 5452 SASBENDNODE(sb, *indent, mtdensity); 5453} 5454 5455#endif /* _KERNEL */ 5456 5457/* 5458 * Read tape block limits command. 5459 */ 5460void 5461scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5462 void (*cbfcnp)(struct cam_periph *, union ccb *), 5463 u_int8_t tag_action, 5464 struct scsi_read_block_limits_data *rlimit_buf, 5465 u_int8_t sense_len, u_int32_t timeout) 5466{ 5467 struct scsi_read_block_limits *scsi_cmd; 5468 5469 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5470 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5471 sizeof(*scsi_cmd), timeout); 5472 5473 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5474 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5475 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5476} 5477 5478void 5479scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5480 void (*cbfcnp)(struct cam_periph *, union ccb *), 5481 u_int8_t tag_action, int readop, int sli, 5482 int fixed, u_int32_t length, u_int8_t *data_ptr, 5483 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5484{ 5485 struct scsi_sa_rw *scsi_cmd; 5486 int read; 5487 5488 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5489 5490 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5491 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5492 scsi_cmd->sli_fixed = 0; 5493 if (sli && read) 5494 scsi_cmd->sli_fixed |= SAR_SLI; 5495 if (fixed) 5496 scsi_cmd->sli_fixed |= SARW_FIXED; 5497 scsi_ulto3b(length, scsi_cmd->length); 5498 scsi_cmd->control = 0; 5499 5500 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5501 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5502 tag_action, data_ptr, dxfer_len, sense_len, 5503 sizeof(*scsi_cmd), timeout); 5504} 5505 5506void 5507scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5508 void (*cbfcnp)(struct cam_periph *, union ccb *), 5509 u_int8_t tag_action, int immediate, int eot, 5510 int reten, int load, u_int8_t sense_len, 5511 u_int32_t timeout) 5512{ 5513 struct scsi_load_unload *scsi_cmd; 5514 5515 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5516 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5517 scsi_cmd->opcode = LOAD_UNLOAD; 5518 if (immediate) 5519 scsi_cmd->immediate = SLU_IMMED; 5520 if (eot) 5521 scsi_cmd->eot_reten_load |= SLU_EOT; 5522 if (reten) 5523 scsi_cmd->eot_reten_load |= SLU_RETEN; 5524 if (load) 5525 scsi_cmd->eot_reten_load |= SLU_LOAD; 5526 5527 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5528 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5529} 5530 5531void 5532scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5533 void (*cbfcnp)(struct cam_periph *, union ccb *), 5534 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5535 u_int32_t timeout) 5536{ 5537 struct scsi_rewind *scsi_cmd; 5538 5539 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5540 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5541 scsi_cmd->opcode = REWIND; 5542 if (immediate) 5543 scsi_cmd->immediate = SREW_IMMED; 5544 5545 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5546 0, sense_len, sizeof(*scsi_cmd), timeout); 5547} 5548 5549void 5550scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5551 void (*cbfcnp)(struct cam_periph *, union ccb *), 5552 u_int8_t tag_action, scsi_space_code code, 5553 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5554{ 5555 struct scsi_space *scsi_cmd; 5556 5557 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5558 scsi_cmd->opcode = SPACE; 5559 scsi_cmd->code = code; 5560 scsi_ulto3b(count, scsi_cmd->count); 5561 scsi_cmd->control = 0; 5562 5563 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5564 0, sense_len, sizeof(*scsi_cmd), timeout); 5565} 5566 5567void 5568scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5569 void (*cbfcnp)(struct cam_periph *, union ccb *), 5570 u_int8_t tag_action, int immediate, int setmark, 5571 u_int32_t num_marks, u_int8_t sense_len, 5572 u_int32_t timeout) 5573{ 5574 struct scsi_write_filemarks *scsi_cmd; 5575 5576 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5577 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5578 scsi_cmd->opcode = WRITE_FILEMARKS; 5579 if (immediate) 5580 scsi_cmd->byte2 |= SWFMRK_IMMED; 5581 if (setmark) 5582 scsi_cmd->byte2 |= SWFMRK_WSMK; 5583 5584 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5585 5586 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5587 0, sense_len, sizeof(*scsi_cmd), timeout); 5588} 5589 5590/* 5591 * The reserve and release unit commands differ only by their opcodes. 5592 */ 5593void 5594scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5595 void (*cbfcnp)(struct cam_periph *, union ccb *), 5596 u_int8_t tag_action, int third_party, 5597 int third_party_id, u_int8_t sense_len, 5598 u_int32_t timeout, int reserve) 5599{ 5600 struct scsi_reserve_release_unit *scsi_cmd; 5601 5602 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5603 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5604 5605 if (reserve) 5606 scsi_cmd->opcode = RESERVE_UNIT; 5607 else 5608 scsi_cmd->opcode = RELEASE_UNIT; 5609 5610 if (third_party) { 5611 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5612 scsi_cmd->lun_thirdparty |= 5613 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5614 } 5615 5616 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5617 0, sense_len, sizeof(*scsi_cmd), timeout); 5618} 5619 5620void 5621scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5622 void (*cbfcnp)(struct cam_periph *, union ccb *), 5623 u_int8_t tag_action, int immediate, int long_erase, 5624 u_int8_t sense_len, u_int32_t timeout) 5625{ 5626 struct scsi_erase *scsi_cmd; 5627 5628 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5629 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5630 5631 scsi_cmd->opcode = ERASE; 5632 5633 if (immediate) 5634 scsi_cmd->lun_imm_long |= SE_IMMED; 5635 5636 if (long_erase) 5637 scsi_cmd->lun_imm_long |= SE_LONG; 5638 5639 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5640 0, sense_len, sizeof(*scsi_cmd), timeout); 5641} 5642 5643/* 5644 * Read Tape Position command. 5645 */ 5646void 5647scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5648 void (*cbfcnp)(struct cam_periph *, union ccb *), 5649 u_int8_t tag_action, int hardsoft, 5650 struct scsi_tape_position_data *sbp, 5651 u_int8_t sense_len, u_int32_t timeout) 5652{ 5653 struct scsi_tape_read_position *scmd; 5654 5655 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5656 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5657 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5658 bzero(scmd, sizeof(*scmd)); 5659 scmd->opcode = READ_POSITION; 5660 scmd->byte1 = hardsoft; 5661} 5662 5663/* 5664 * Read Tape Position command. 5665 */ 5666void 5667scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5668 void (*cbfcnp)(struct cam_periph *, union ccb *), 5669 u_int8_t tag_action, int service_action, 5670 u_int8_t *data_ptr, u_int32_t length, 5671 u_int32_t sense_len, u_int32_t timeout) 5672{ 5673 struct scsi_tape_read_position *scmd; 5674 5675 cam_fill_csio(csio, 5676 retries, 5677 cbfcnp, 5678 /*flags*/CAM_DIR_IN, 5679 tag_action, 5680 /*data_ptr*/data_ptr, 5681 /*dxfer_len*/length, 5682 sense_len, 5683 sizeof(*scmd), 5684 timeout); 5685 5686 5687 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5688 bzero(scmd, sizeof(*scmd)); 5689 scmd->opcode = READ_POSITION; 5690 scmd->byte1 = service_action; 5691 /* 5692 * The length is only currently set (as of SSC4r03) if the extended 5693 * form is specified. The other forms have fixed lengths. 5694 */ 5695 if (service_action == SA_RPOS_EXTENDED_FORM) 5696 scsi_ulto2b(length, scmd->length); 5697} 5698 5699/* 5700 * Set Tape Position command. 5701 */ 5702void 5703scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5704 void (*cbfcnp)(struct cam_periph *, union ccb *), 5705 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5706 u_int8_t sense_len, u_int32_t timeout) 5707{ 5708 struct scsi_tape_locate *scmd; 5709 5710 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5711 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5712 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5713 bzero(scmd, sizeof(*scmd)); 5714 scmd->opcode = LOCATE; 5715 if (hardsoft) 5716 scmd->byte1 |= SA_SPOS_BT; 5717 scsi_ulto4b(blkno, scmd->blkaddr); 5718} 5719 5720/* 5721 * XXX KDM figure out how to make a compatibility function. 5722 */ 5723void 5724scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5725 void (*cbfcnp)(struct cam_periph *, union ccb *), 5726 u_int8_t tag_action, int immed, int cp, int hard, 5727 int64_t partition, u_int32_t block_address, 5728 int sense_len, u_int32_t timeout) 5729{ 5730 struct scsi_tape_locate *scmd; 5731 5732 cam_fill_csio(csio, 5733 retries, 5734 cbfcnp, 5735 CAM_DIR_NONE, 5736 tag_action, 5737 /*data_ptr*/ NULL, 5738 /*dxfer_len*/ 0, 5739 sense_len, 5740 sizeof(*scmd), 5741 timeout); 5742 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5743 bzero(scmd, sizeof(*scmd)); 5744 scmd->opcode = LOCATE; 5745 if (immed) 5746 scmd->byte1 |= SA_SPOS_IMMED; 5747 if (cp) 5748 scmd->byte1 |= SA_SPOS_CP; 5749 if (hard) 5750 scmd->byte1 |= SA_SPOS_BT; 5751 scsi_ulto4b(block_address, scmd->blkaddr); 5752 scmd->partition = partition; 5753} 5754 5755void 5756scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5757 void (*cbfcnp)(struct cam_periph *, union ccb *), 5758 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5759 int bam, int64_t partition, u_int64_t logical_id, 5760 int sense_len, u_int32_t timeout) 5761{ 5762 5763 struct scsi_locate_16 *scsi_cmd; 5764 5765 cam_fill_csio(csio, 5766 retries, 5767 cbfcnp, 5768 /*flags*/CAM_DIR_NONE, 5769 tag_action, 5770 /*data_ptr*/NULL, 5771 /*dxfer_len*/0, 5772 sense_len, 5773 sizeof(*scsi_cmd), 5774 timeout); 5775 5776 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5777 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5778 scsi_cmd->opcode = LOCATE_16; 5779 if (immed) 5780 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5781 if (cp) 5782 scsi_cmd->byte1 |= SA_LC_CP; 5783 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5784 5785 scsi_cmd->byte2 |= bam; 5786 scsi_cmd->partition = partition; 5787 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5788} 5789 5790void 5791scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5792 void (*cbfcnp)(struct cam_periph *, union ccb *), 5793 u_int8_t tag_action, int media, int medium_type, 5794 u_int8_t *data_ptr, u_int32_t length, 5795 u_int32_t sense_len, u_int32_t timeout) 5796{ 5797 struct scsi_report_density_support *scsi_cmd; 5798 5799 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5800 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5801 5802 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5803 if (media != 0) 5804 scsi_cmd->byte1 |= SRDS_MEDIA; 5805 if (medium_type != 0) 5806 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5807 5808 scsi_ulto2b(length, scsi_cmd->length); 5809 5810 cam_fill_csio(csio, 5811 retries, 5812 cbfcnp, 5813 /*flags*/CAM_DIR_IN, 5814 tag_action, 5815 /*data_ptr*/data_ptr, 5816 /*dxfer_len*/length, 5817 sense_len, 5818 sizeof(*scsi_cmd), 5819 timeout); 5820} 5821 5822void 5823scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5824 void (*cbfcnp)(struct cam_periph *, union ccb *), 5825 u_int8_t tag_action, int byte1, u_int32_t proportion, 5826 u_int32_t sense_len, u_int32_t timeout) 5827{ 5828 struct scsi_set_capacity *scsi_cmd; 5829 5830 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5831 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5832 5833 scsi_cmd->opcode = SET_CAPACITY; 5834 5835 scsi_cmd->byte1 = byte1; 5836 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5837 5838 cam_fill_csio(csio, 5839 retries, 5840 cbfcnp, 5841 /*flags*/CAM_DIR_NONE, 5842 tag_action, 5843 /*data_ptr*/NULL, 5844 /*dxfer_len*/0, 5845 sense_len, 5846 sizeof(*scsi_cmd), 5847 timeout); 5848} 5849 5850void 5851scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5852 void (*cbfcnp)(struct cam_periph *, union ccb *), 5853 u_int8_t tag_action, int byte1, int byte2, 5854 u_int8_t *data_ptr, u_int32_t dxfer_len, 5855 u_int32_t sense_len, u_int32_t timeout) 5856{ 5857 struct scsi_format_medium *scsi_cmd; 5858 5859 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5860 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5861 5862 scsi_cmd->opcode = FORMAT_MEDIUM; 5863 5864 scsi_cmd->byte1 = byte1; 5865 scsi_cmd->byte2 = byte2; 5866 5867 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5868 5869 cam_fill_csio(csio, 5870 retries, 5871 cbfcnp, 5872 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5873 tag_action, 5874 /*data_ptr*/ data_ptr, 5875 /*dxfer_len*/ dxfer_len, 5876 sense_len, 5877 sizeof(*scsi_cmd), 5878 timeout); 5879} 5880 5881void 5882scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5883 void (*cbfcnp)(struct cam_periph *, union ccb *), 5884 u_int8_t tag_action, int allow_overwrite, int partition, 5885 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5886{ 5887 struct scsi_allow_overwrite *scsi_cmd; 5888 5889 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5890 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5891 5892 scsi_cmd->opcode = ALLOW_OVERWRITE; 5893 5894 scsi_cmd->allow_overwrite = allow_overwrite; 5895 scsi_cmd->partition = partition; 5896 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5897 5898 cam_fill_csio(csio, 5899 retries, 5900 cbfcnp, 5901 CAM_DIR_NONE, 5902 tag_action, 5903 /*data_ptr*/ NULL, 5904 /*dxfer_len*/ 0, 5905 sense_len, 5906 sizeof(*scsi_cmd), 5907 timeout); 5908} 5909