scsi_sa.c revision 332933
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/10/sys/cam/scsi/scsi_sa.c 332933 2018-04-24 13:52:39Z 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 sizeof(sa_prot_table)/sizeof(sa_prot_table[0]) 313 314#define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \ 315 && (softc->prot_info.cur_prot_state.initialized != 0) \ 316 && (softc->prot_info.cur_prot_state.prot_method != 0)) 317 318#define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length 319 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 */ 619TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split); 620static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 621 "CAM Sequential Access Tape Driver"); 622 623static struct periph_driver sadriver = 624{ 625 sainit, "sa", 626 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 627}; 628 629PERIPHDRIVER_DECLARE(sa, sadriver); 630 631/* For 2.2-stable support */ 632#ifndef D_TAPE 633#define D_TAPE 0 634#endif 635 636 637static struct cdevsw sa_cdevsw = { 638 .d_version = D_VERSION, 639 .d_open = saopen, 640 .d_close = saclose, 641 .d_read = physread, 642 .d_write = physwrite, 643 .d_ioctl = saioctl, 644 .d_strategy = sastrategy, 645 .d_name = "sa", 646 .d_flags = D_TAPE | D_TRACKCLOSE, 647}; 648 649static int 650saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 651{ 652 struct cam_periph *periph; 653 struct sa_softc *softc; 654 int error; 655 656 periph = (struct cam_periph *)dev->si_drv1; 657 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 658 return (ENXIO); 659 } 660 661 cam_periph_lock(periph); 662 663 softc = (struct sa_softc *)periph->softc; 664 665 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 666 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 667 668 if (SA_IS_CTRL(dev)) { 669 softc->ctrl_mode = 1; 670 softc->open_count++; 671 cam_periph_unlock(periph); 672 return (0); 673 } 674 675 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 676 cam_periph_unlock(periph); 677 cam_periph_release(periph); 678 return (error); 679 } 680 681 if (softc->flags & SA_FLAG_OPEN) { 682 error = EBUSY; 683 } else if (softc->flags & SA_FLAG_INVALID) { 684 error = ENXIO; 685 } else { 686 /* 687 * Preserve whether this is a read_only open. 688 */ 689 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 690 691 /* 692 * The function samount ensures media is loaded and ready. 693 * It also does a device RESERVE if the tape isn't yet mounted. 694 * 695 * If the mount fails and this was a non-blocking open, 696 * make this a 'open_pending_mount' action. 697 */ 698 error = samount(periph, flags, dev); 699 if (error && (flags & O_NONBLOCK)) { 700 softc->flags |= SA_FLAG_OPEN; 701 softc->open_pending_mount = 1; 702 softc->open_count++; 703 cam_periph_unhold(periph); 704 cam_periph_unlock(periph); 705 return (0); 706 } 707 } 708 709 if (error) { 710 cam_periph_unhold(periph); 711 cam_periph_unlock(periph); 712 cam_periph_release(periph); 713 return (error); 714 } 715 716 saprevent(periph, PR_PREVENT); 717 softc->flags |= SA_FLAG_OPEN; 718 softc->open_count++; 719 720 cam_periph_unhold(periph); 721 cam_periph_unlock(periph); 722 return (error); 723} 724 725static int 726saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 727{ 728 struct cam_periph *periph; 729 struct sa_softc *softc; 730 int mode, error, writing, tmp, i; 731 int closedbits = SA_FLAG_OPEN; 732 733 mode = SAMODE(dev); 734 periph = (struct cam_periph *)dev->si_drv1; 735 cam_periph_lock(periph); 736 737 softc = (struct sa_softc *)periph->softc; 738 739 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 740 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 741 742 743 softc->open_rdonly = 0; 744 if (SA_IS_CTRL(dev)) { 745 softc->ctrl_mode = 0; 746 softc->open_count--; 747 cam_periph_unlock(periph); 748 cam_periph_release(periph); 749 return (0); 750 } 751 752 if (softc->open_pending_mount) { 753 softc->flags &= ~SA_FLAG_OPEN; 754 softc->open_pending_mount = 0; 755 softc->open_count--; 756 cam_periph_unlock(periph); 757 cam_periph_release(periph); 758 return (0); 759 } 760 761 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 762 cam_periph_unlock(periph); 763 return (error); 764 } 765 766 /* 767 * Were we writing the tape? 768 */ 769 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 770 771 /* 772 * See whether or not we need to write filemarks. If this 773 * fails, we probably have to assume we've lost tape 774 * position. 775 */ 776 error = sacheckeod(periph); 777 if (error) { 778 xpt_print(periph->path, 779 "failed to write terminating filemark(s)\n"); 780 softc->flags |= SA_FLAG_TAPE_FROZEN; 781 } 782 783 /* 784 * Whatever we end up doing, allow users to eject tapes from here on. 785 */ 786 saprevent(periph, PR_ALLOW); 787 788 /* 789 * Decide how to end... 790 */ 791 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 792 closedbits |= SA_FLAG_TAPE_FROZEN; 793 } else switch (mode) { 794 case SA_MODE_OFFLINE: 795 /* 796 * An 'offline' close is an unconditional release of 797 * frozen && mount conditions, irrespective of whether 798 * these operations succeeded. The reason for this is 799 * to allow at least some kind of programmatic way 800 * around our state getting all fouled up. If somebody 801 * issues an 'offline' command, that will be allowed 802 * to clear state. 803 */ 804 (void) sarewind(periph); 805 (void) saloadunload(periph, FALSE); 806 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 807 break; 808 case SA_MODE_REWIND: 809 /* 810 * If the rewind fails, return an error- if anyone cares, 811 * but not overwriting any previous error. 812 * 813 * We don't clear the notion of mounted here, but we do 814 * clear the notion of frozen if we successfully rewound. 815 */ 816 tmp = sarewind(periph); 817 if (tmp) { 818 if (error != 0) 819 error = tmp; 820 } else { 821 closedbits |= SA_FLAG_TAPE_FROZEN; 822 } 823 break; 824 case SA_MODE_NOREWIND: 825 /* 826 * If we're not rewinding/unloading the tape, find out 827 * whether we need to back up over one of two filemarks 828 * we wrote (if we wrote two filemarks) so that appends 829 * from this point on will be sane. 830 */ 831 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 832 tmp = saspace(periph, -1, SS_FILEMARKS); 833 if (tmp) { 834 xpt_print(periph->path, "unable to backspace " 835 "over one of double filemarks at end of " 836 "tape\n"); 837 xpt_print(periph->path, "it is possible that " 838 "this device needs a SA_QUIRK_1FM quirk set" 839 "for it\n"); 840 softc->flags |= SA_FLAG_TAPE_FROZEN; 841 } 842 } 843 break; 844 default: 845 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 846 /* NOTREACHED */ 847 break; 848 } 849 850 /* 851 * We wish to note here that there are no more filemarks to be written. 852 */ 853 softc->filemarks = 0; 854 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 855 856 /* 857 * And we are no longer open for business. 858 */ 859 softc->flags &= ~closedbits; 860 softc->open_count--; 861 862 /* 863 * Invalidate any density information that depends on having tape 864 * media in the drive. 865 */ 866 for (i = 0; i < SA_DENSITY_TYPES; i++) { 867 if (softc->density_type_bits[i] & SRDS_MEDIA) 868 softc->density_info_valid[i] = 0; 869 } 870 871 /* 872 * Inform users if tape state if frozen.... 873 */ 874 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 875 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 876 "REWIND or MTEOM command to clear this state.\n"); 877 } 878 879 /* release the device if it is no longer mounted */ 880 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 881 sareservereleaseunit(periph, FALSE); 882 883 cam_periph_unhold(periph); 884 cam_periph_unlock(periph); 885 cam_periph_release(periph); 886 887 return (error); 888} 889 890/* 891 * Actually translate the requested transfer into one the physical driver 892 * can understand. The transfer is described by a buf and will include 893 * only one physical transfer. 894 */ 895static void 896sastrategy(struct bio *bp) 897{ 898 struct cam_periph *periph; 899 struct sa_softc *softc; 900 901 bp->bio_resid = bp->bio_bcount; 902 if (SA_IS_CTRL(bp->bio_dev)) { 903 biofinish(bp, NULL, EINVAL); 904 return; 905 } 906 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 907 cam_periph_lock(periph); 908 909 softc = (struct sa_softc *)periph->softc; 910 911 if (softc->flags & SA_FLAG_INVALID) { 912 cam_periph_unlock(periph); 913 biofinish(bp, NULL, ENXIO); 914 return; 915 } 916 917 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 918 cam_periph_unlock(periph); 919 biofinish(bp, NULL, EPERM); 920 return; 921 } 922 923 /* 924 * This should actually never occur as the write(2) 925 * system call traps attempts to write to a read-only 926 * file descriptor. 927 */ 928 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 929 cam_periph_unlock(periph); 930 biofinish(bp, NULL, EBADF); 931 return; 932 } 933 934 if (softc->open_pending_mount) { 935 int error = samount(periph, 0, bp->bio_dev); 936 if (error) { 937 cam_periph_unlock(periph); 938 biofinish(bp, NULL, ENXIO); 939 return; 940 } 941 saprevent(periph, PR_PREVENT); 942 softc->open_pending_mount = 0; 943 } 944 945 946 /* 947 * If it's a null transfer, return immediately 948 */ 949 if (bp->bio_bcount == 0) { 950 cam_periph_unlock(periph); 951 biodone(bp); 952 return; 953 } 954 955 /* valid request? */ 956 if (softc->flags & SA_FLAG_FIXED) { 957 /* 958 * Fixed block device. The byte count must 959 * be a multiple of our block size. 960 */ 961 if (((softc->blk_mask != ~0) && 962 ((bp->bio_bcount & softc->blk_mask) != 0)) || 963 ((softc->blk_mask == ~0) && 964 ((bp->bio_bcount % softc->min_blk) != 0))) { 965 xpt_print(periph->path, "Invalid request. Fixed block " 966 "device requests must be a multiple of %d bytes\n", 967 softc->min_blk); 968 cam_periph_unlock(periph); 969 biofinish(bp, NULL, EINVAL); 970 return; 971 } 972 } else if ((bp->bio_bcount > softc->max_blk) || 973 (bp->bio_bcount < softc->min_blk) || 974 (bp->bio_bcount & softc->blk_mask) != 0) { 975 976 xpt_print_path(periph->path); 977 printf("Invalid request. Variable block " 978 "device requests must be "); 979 if (softc->blk_mask != 0) { 980 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 981 } 982 printf("between %d and %d bytes\n", softc->min_blk, 983 softc->max_blk); 984 cam_periph_unlock(periph); 985 biofinish(bp, NULL, EINVAL); 986 return; 987 } 988 989 /* 990 * Place it at the end of the queue. 991 */ 992 bioq_insert_tail(&softc->bio_queue, bp); 993 softc->queue_count++; 994#if 0 995 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 996 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 997 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 998 (bp->bio_cmd == BIO_READ)? "read" : "write")); 999#endif 1000 if (softc->queue_count > 1) { 1001 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1002 ("sastrategy: queue count now %d\n", softc->queue_count)); 1003 } 1004 1005 /* 1006 * Schedule ourselves for performing the work. 1007 */ 1008 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1009 cam_periph_unlock(periph); 1010 1011 return; 1012} 1013 1014static int 1015sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1016{ 1017 uint32_t sili_blocksize; 1018 struct sa_softc *softc; 1019 int error; 1020 1021 error = 0; 1022 softc = (struct sa_softc *)periph->softc; 1023 1024 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1025 snprintf(ps->error_str, sizeof(ps->error_str), 1026 "sili is a signed parameter"); 1027 goto bailout; 1028 } 1029 if ((ps->value.value_signed < 0) 1030 || (ps->value.value_signed > 1)) { 1031 snprintf(ps->error_str, sizeof(ps->error_str), 1032 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1033 goto bailout_error; 1034 } 1035 /* 1036 * We only set the SILI flag in variable block 1037 * mode. You'll get a check condition in fixed 1038 * block mode if things don't line up in any case. 1039 */ 1040 if (softc->flags & SA_FLAG_FIXED) { 1041 snprintf(ps->error_str, sizeof(ps->error_str), 1042 "can't set sili bit in fixed block mode"); 1043 goto bailout_error; 1044 } 1045 if (softc->sili == ps->value.value_signed) 1046 goto bailout; 1047 1048 if (ps->value.value_signed == 1) 1049 sili_blocksize = 4; 1050 else 1051 sili_blocksize = 0; 1052 1053 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1054 sili_blocksize, 0, 0, SF_QUIET_IR); 1055 if (error != 0) { 1056 snprintf(ps->error_str, sizeof(ps->error_str), 1057 "sasetparams() returned error %d", error); 1058 goto bailout_error; 1059 } 1060 1061 softc->sili = ps->value.value_signed; 1062 1063bailout: 1064 ps->status = MT_PARAM_STATUS_OK; 1065 return (error); 1066 1067bailout_error: 1068 ps->status = MT_PARAM_STATUS_ERROR; 1069 if (error == 0) 1070 error = EINVAL; 1071 1072 return (error); 1073} 1074 1075static int 1076saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1077{ 1078 struct sa_softc *softc; 1079 int error; 1080 1081 error = 0; 1082 softc = (struct sa_softc *)periph->softc; 1083 1084 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1085 snprintf(ps->error_str, sizeof(ps->error_str), 1086 "eot_warn is a signed parameter"); 1087 ps->status = MT_PARAM_STATUS_ERROR; 1088 goto bailout; 1089 } 1090 if ((ps->value.value_signed < 0) 1091 || (ps->value.value_signed > 1)) { 1092 snprintf(ps->error_str, sizeof(ps->error_str), 1093 "invalid eot_warn value %jd\n", 1094 (intmax_t)ps->value.value_signed); 1095 ps->status = MT_PARAM_STATUS_ERROR; 1096 goto bailout; 1097 } 1098 softc->eot_warn = ps->value.value_signed; 1099 ps->status = MT_PARAM_STATUS_OK; 1100bailout: 1101 if (ps->status != MT_PARAM_STATUS_OK) 1102 error = EINVAL; 1103 1104 return (error); 1105} 1106 1107 1108static void 1109safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1110{ 1111 int tmpint; 1112 1113 SASBADDNODE(sb, *indent, protection); 1114 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1115 tmpint = 1; 1116 else 1117 tmpint = 0; 1118 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1119 "Set to 1 if protection information is supported"); 1120 1121 if ((tmpint != 0) 1122 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1123 struct sa_prot_state *prot; 1124 1125 prot = &softc->prot_info.cur_prot_state; 1126 1127 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1128 prot_method, "Current Protection Method"); 1129 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1130 pi_length, "Length of Protection Information"); 1131 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1132 lbp_w, "Check Protection on Writes"); 1133 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1134 lbp_r, "Check and Include Protection on Reads"); 1135 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1136 rbdp, "Transfer Protection Information for RECOVER " 1137 "BUFFERED DATA command"); 1138 } 1139 SASBENDNODE(sb, *indent, protection); 1140} 1141 1142static void 1143sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1144 int table_ents) 1145{ 1146 int i; 1147 1148 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1149 sizeof(sa_prot_table))); 1150 1151 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1152 1153 for (i = 0; i < table_ents; i++) 1154 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1155 new_table[i].offset); 1156 1157 return; 1158} 1159 1160static struct sa_prot_map * 1161safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1162{ 1163 char *prot_name = "protection."; 1164 int i, prot_len; 1165 1166 prot_len = strlen(prot_name); 1167 1168 /* 1169 * This shouldn't happen, but we check just in case. 1170 */ 1171 if (strncmp(name, prot_name, prot_len) != 0) 1172 goto bailout; 1173 1174 for (i = 0; i < table_ents; i++) { 1175 if (strcmp(&name[prot_len], table[i].name) != 0) 1176 continue; 1177 return (&table[i]); 1178 } 1179bailout: 1180 return (NULL); 1181} 1182 1183static int 1184sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1185{ 1186 struct sa_softc *softc; 1187 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1188 struct sa_prot_state new_state; 1189 int error; 1190 int i; 1191 1192 softc = (struct sa_softc *)periph->softc; 1193 error = 0; 1194 1195 /* 1196 * Make sure that this tape drive supports protection information. 1197 * Otherwise we can't set anything. 1198 */ 1199 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1200 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1201 "Protection information is not supported for this device"); 1202 ps[0].status = MT_PARAM_STATUS_ERROR; 1203 goto bailout; 1204 } 1205 1206 /* 1207 * We can't operate with physio(9) splitting enabled, because there 1208 * is no way to insure (especially in variable block mode) that 1209 * what the user writes (with a checksum block at the end) will 1210 * make it into the sa(4) driver intact. 1211 */ 1212 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1213 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1214 "Protection information cannot be enabled with I/O " 1215 "splitting"); 1216 ps[0].status = MT_PARAM_STATUS_ERROR; 1217 goto bailout; 1218 } 1219 1220 /* 1221 * Take the current cached protection state and use that as the 1222 * basis for our new entries. 1223 */ 1224 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1225 1226 /* 1227 * Populate the table mapping property names to pointers into the 1228 * state structure. 1229 */ 1230 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1231 1232 /* 1233 * For each parameter the user passed in, make sure the name, type 1234 * and value are valid. 1235 */ 1236 for (i = 0; i < num_params; i++) { 1237 struct sa_prot_map *ent; 1238 1239 ent = safindprotent(ps[i].value_name, prot_ents, 1240 SA_NUM_PROT_ENTS); 1241 if (ent == NULL) { 1242 ps[i].status = MT_PARAM_STATUS_ERROR; 1243 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1244 "Invalid protection entry name %s", 1245 ps[i].value_name); 1246 error = EINVAL; 1247 goto bailout; 1248 } 1249 if (ent->param_type != ps[i].value_type) { 1250 ps[i].status = MT_PARAM_STATUS_ERROR; 1251 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1252 "Supplied type %d does not match actual type %d", 1253 ps[i].value_type, ent->param_type); 1254 error = EINVAL; 1255 goto bailout; 1256 } 1257 if ((ps[i].value.value_unsigned < ent->min_val) 1258 || (ps[i].value.value_unsigned > ent->max_val)) { 1259 ps[i].status = MT_PARAM_STATUS_ERROR; 1260 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1261 "Value %ju is outside valid range %u - %u", 1262 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1263 ent->max_val); 1264 error = EINVAL; 1265 goto bailout; 1266 } 1267 *(ent->value) = ps[i].value.value_unsigned; 1268 } 1269 1270 /* 1271 * Actually send the protection settings to the drive. 1272 */ 1273 error = sasetprot(periph, &new_state); 1274 if (error != 0) { 1275 for (i = 0; i < num_params; i++) { 1276 ps[i].status = MT_PARAM_STATUS_ERROR; 1277 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1278 "Unable to set parameter, see dmesg(8)"); 1279 } 1280 goto bailout; 1281 } 1282 1283 /* 1284 * Let the user know that his settings were stored successfully. 1285 */ 1286 for (i = 0; i < num_params; i++) 1287 ps[i].status = MT_PARAM_STATUS_OK; 1288 1289bailout: 1290 return (error); 1291} 1292/* 1293 * Entry handlers generally only handle a single entry. Node handlers will 1294 * handle a contiguous range of parameters to set in a single call. 1295 */ 1296typedef enum { 1297 SA_PARAM_TYPE_ENTRY, 1298 SA_PARAM_TYPE_NODE 1299} sa_param_type; 1300 1301struct sa_param_ent { 1302 char *name; 1303 sa_param_type param_type; 1304 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1305 int num_params); 1306} sa_param_table[] = { 1307 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1308 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1309 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1310}; 1311 1312static struct sa_param_ent * 1313safindparament(struct mtparamset *ps) 1314{ 1315 unsigned int i; 1316 1317 for (i = 0; i < sizeof(sa_param_table) /sizeof(sa_param_table[0]); i++){ 1318 /* 1319 * For entries, we compare all of the characters. For 1320 * nodes, we only compare the first N characters. The node 1321 * handler will decode the rest. 1322 */ 1323 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1324 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1325 continue; 1326 } else { 1327 if (strncmp(ps->value_name, sa_param_table[i].name, 1328 strlen(sa_param_table[i].name)) != 0) 1329 continue; 1330 } 1331 return (&sa_param_table[i]); 1332 } 1333 1334 return (NULL); 1335} 1336 1337/* 1338 * Go through a list of parameters, coalescing contiguous parameters with 1339 * the same parent node into a single call to a set_func. 1340 */ 1341static int 1342saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1343 int need_copy) 1344{ 1345 int i, contig_ents; 1346 int error; 1347 struct mtparamset *params, *first; 1348 struct sa_param_ent *first_ent; 1349 1350 error = 0; 1351 params = NULL; 1352 1353 if (list->num_params == 0) 1354 /* Nothing to do */ 1355 goto bailout; 1356 1357 /* 1358 * Verify that the user has the correct structure size. 1359 */ 1360 if ((list->num_params * sizeof(struct mtparamset)) != 1361 list->param_len) { 1362 xpt_print(periph->path, "%s: length of params %d != " 1363 "sizeof(struct mtparamset) %zd * num_params %d\n", 1364 __func__, list->param_len, sizeof(struct mtparamset), 1365 list->num_params); 1366 error = EINVAL; 1367 goto bailout; 1368 } 1369 1370 if (need_copy != 0) { 1371 /* 1372 * XXX KDM will dropping the lock cause an issue here? 1373 */ 1374 cam_periph_unlock(periph); 1375 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1376 error = copyin(list->params, params, list->param_len); 1377 cam_periph_lock(periph); 1378 1379 if (error != 0) 1380 goto bailout; 1381 } else { 1382 params = list->params; 1383 } 1384 1385 contig_ents = 0; 1386 first = NULL; 1387 first_ent = NULL; 1388 for (i = 0; i < list->num_params; i++) { 1389 struct sa_param_ent *ent; 1390 1391 ent = safindparament(¶ms[i]); 1392 if (ent == NULL) { 1393 snprintf(params[i].error_str, 1394 sizeof(params[i].error_str), 1395 "%s: cannot find parameter %s", __func__, 1396 params[i].value_name); 1397 params[i].status = MT_PARAM_STATUS_ERROR; 1398 break; 1399 } 1400 1401 if (first != NULL) { 1402 if (first_ent == ent) { 1403 /* 1404 * We're still in a contiguous list of 1405 * parameters that can be handled by one 1406 * node handler. 1407 */ 1408 contig_ents++; 1409 continue; 1410 } else { 1411 error = first_ent->set_func(periph, first, 1412 contig_ents); 1413 first = NULL; 1414 first_ent = NULL; 1415 contig_ents = 0; 1416 if (error != 0) { 1417 error = 0; 1418 break; 1419 } 1420 } 1421 } 1422 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1423 first = ¶ms[i]; 1424 first_ent = ent; 1425 contig_ents = 1; 1426 } else { 1427 error = ent->set_func(periph, ¶ms[i], 1); 1428 if (error != 0) { 1429 error = 0; 1430 break; 1431 } 1432 } 1433 } 1434 if (first != NULL) 1435 first_ent->set_func(periph, first, contig_ents); 1436 1437bailout: 1438 if (need_copy != 0) { 1439 if (error != EFAULT) { 1440 cam_periph_unlock(periph); 1441 copyout(params, list->params, list->param_len); 1442 cam_periph_lock(periph); 1443 } 1444 free(params, M_SCSISA); 1445 } 1446 return (error); 1447} 1448 1449static int 1450sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1451{ 1452 struct sa_softc *softc; 1453 u_int8_t write_protect; 1454 int comp_enabled, comp_supported, error; 1455 1456 softc = (struct sa_softc *)periph->softc; 1457 1458 if (softc->open_pending_mount) 1459 return (0); 1460 1461 /* The control device may issue getparams() if there are no opens. */ 1462 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1463 return (0); 1464 1465 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1466 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1467 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1468 &softc->comp_algorithm, NULL, NULL, 0, 0); 1469 if (error) 1470 return (error); 1471 if (write_protect) 1472 softc->flags |= SA_FLAG_TAPE_WP; 1473 else 1474 softc->flags &= ~SA_FLAG_TAPE_WP; 1475 softc->flags &= ~SA_FLAG_COMPRESSION; 1476 if (comp_supported) { 1477 if (softc->saved_comp_algorithm == 0) 1478 softc->saved_comp_algorithm = 1479 softc->comp_algorithm; 1480 softc->flags |= SA_FLAG_COMP_SUPP; 1481 if (comp_enabled) 1482 softc->flags |= SA_FLAG_COMP_ENABLED; 1483 } else 1484 softc->flags |= SA_FLAG_COMP_UNSUPP; 1485 1486 return (0); 1487} 1488 1489#define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1490 if (softc->open_pending_mount) { \ 1491 error = samount(periph, 0, dev); \ 1492 if (error) { \ 1493 break; \ 1494 } \ 1495 saprevent(periph, PR_PREVENT); \ 1496 softc->open_pending_mount = 0; \ 1497 } 1498 1499static int 1500saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1501{ 1502 struct cam_periph *periph; 1503 struct sa_softc *softc; 1504 scsi_space_code spaceop; 1505 int didlockperiph = 0; 1506 int mode; 1507 int error = 0; 1508 1509 mode = SAMODE(dev); 1510 error = 0; /* shut up gcc */ 1511 spaceop = 0; /* shut up gcc */ 1512 1513 periph = (struct cam_periph *)dev->si_drv1; 1514 cam_periph_lock(periph); 1515 softc = (struct sa_softc *)periph->softc; 1516 1517 /* 1518 * Check for control mode accesses. We allow MTIOCGET and 1519 * MTIOCERRSTAT (but need to be the only one open in order 1520 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1521 * and MTCOMP (but need to be the only one accessing this 1522 * device to run those). 1523 */ 1524 1525 if (SA_IS_CTRL(dev)) { 1526 switch (cmd) { 1527 case MTIOCGETEOTMODEL: 1528 case MTIOCGET: 1529 case MTIOCEXTGET: 1530 case MTIOCPARAMGET: 1531 case MTIOCRBLIM: 1532 break; 1533 case MTIOCERRSTAT: 1534 /* 1535 * If the periph isn't already locked, lock it 1536 * so our MTIOCERRSTAT can reset latched error stats. 1537 * 1538 * If the periph is already locked, skip it because 1539 * we're just getting status and it'll be up to the 1540 * other thread that has this device open to do 1541 * an MTIOCERRSTAT that would clear latched status. 1542 */ 1543 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1544 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1545 if (error != 0) { 1546 cam_periph_unlock(periph); 1547 return (error); 1548 } 1549 didlockperiph = 1; 1550 } 1551 break; 1552 1553 case MTIOCTOP: 1554 { 1555 struct mtop *mt = (struct mtop *) arg; 1556 1557 /* 1558 * Check to make sure it's an OP we can perform 1559 * with no media inserted. 1560 */ 1561 switch (mt->mt_op) { 1562 case MTSETBSIZ: 1563 case MTSETDNSTY: 1564 case MTCOMP: 1565 mt = NULL; 1566 /* FALLTHROUGH */ 1567 default: 1568 break; 1569 } 1570 if (mt != NULL) { 1571 break; 1572 } 1573 /* FALLTHROUGH */ 1574 } 1575 case MTIOCSETEOTMODEL: 1576 /* 1577 * We need to acquire the peripheral here rather 1578 * than at open time because we are sharing writable 1579 * access to data structures. 1580 */ 1581 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1582 if (error != 0) { 1583 cam_periph_unlock(periph); 1584 return (error); 1585 } 1586 didlockperiph = 1; 1587 break; 1588 1589 default: 1590 cam_periph_unlock(periph); 1591 return (EINVAL); 1592 } 1593 } 1594 1595 /* 1596 * Find the device that the user is talking about 1597 */ 1598 switch (cmd) { 1599 case MTIOCGET: 1600 { 1601 struct mtget *g = (struct mtget *)arg; 1602 1603 error = sagetparams_common(dev, periph); 1604 if (error) 1605 break; 1606 bzero(g, sizeof(struct mtget)); 1607 g->mt_type = MT_ISAR; 1608 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1609 g->mt_comp = MT_COMP_UNSUPP; 1610 g->mt_comp0 = MT_COMP_UNSUPP; 1611 g->mt_comp1 = MT_COMP_UNSUPP; 1612 g->mt_comp2 = MT_COMP_UNSUPP; 1613 g->mt_comp3 = MT_COMP_UNSUPP; 1614 } else { 1615 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1616 g->mt_comp = MT_COMP_DISABLED; 1617 } else { 1618 g->mt_comp = softc->comp_algorithm; 1619 } 1620 g->mt_comp0 = softc->comp_algorithm; 1621 g->mt_comp1 = softc->comp_algorithm; 1622 g->mt_comp2 = softc->comp_algorithm; 1623 g->mt_comp3 = softc->comp_algorithm; 1624 } 1625 g->mt_density = softc->media_density; 1626 g->mt_density0 = softc->media_density; 1627 g->mt_density1 = softc->media_density; 1628 g->mt_density2 = softc->media_density; 1629 g->mt_density3 = softc->media_density; 1630 g->mt_blksiz = softc->media_blksize; 1631 g->mt_blksiz0 = softc->media_blksize; 1632 g->mt_blksiz1 = softc->media_blksize; 1633 g->mt_blksiz2 = softc->media_blksize; 1634 g->mt_blksiz3 = softc->media_blksize; 1635 g->mt_fileno = softc->fileno; 1636 g->mt_blkno = softc->blkno; 1637 g->mt_dsreg = (short) softc->dsreg; 1638 /* 1639 * Yes, we know that this is likely to overflow 1640 */ 1641 if (softc->last_resid_was_io) { 1642 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1643 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1644 softc->last_io_resid = 0; 1645 } 1646 } 1647 } else { 1648 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1649 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1650 softc->last_ctl_resid = 0; 1651 } 1652 } 1653 } 1654 error = 0; 1655 break; 1656 } 1657 case MTIOCEXTGET: 1658 case MTIOCPARAMGET: 1659 { 1660 struct mtextget *g = (struct mtextget *)arg; 1661 char *tmpstr2; 1662 struct sbuf *sb; 1663 1664 /* 1665 * Report drive status using an XML format. 1666 */ 1667 1668 /* 1669 * XXX KDM will dropping the lock cause any problems here? 1670 */ 1671 cam_periph_unlock(periph); 1672 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1673 if (sb == NULL) { 1674 g->status = MT_EXT_GET_ERROR; 1675 snprintf(g->error_str, sizeof(g->error_str), 1676 "Unable to allocate %d bytes for status info", 1677 g->alloc_len); 1678 cam_periph_lock(periph); 1679 goto extget_bailout; 1680 } 1681 cam_periph_lock(periph); 1682 1683 if (cmd == MTIOCEXTGET) 1684 error = saextget(dev, periph, sb, g); 1685 else 1686 error = saparamget(softc, sb); 1687 1688 if (error != 0) 1689 goto extget_bailout; 1690 1691 error = sbuf_finish(sb); 1692 if (error == ENOMEM) { 1693 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1694 error = 0; 1695 } else if (error != 0) { 1696 g->status = MT_EXT_GET_ERROR; 1697 snprintf(g->error_str, sizeof(g->error_str), 1698 "Error %d returned from sbuf_finish()", error); 1699 } else 1700 g->status = MT_EXT_GET_OK; 1701 1702 error = 0; 1703 tmpstr2 = sbuf_data(sb); 1704 g->fill_len = strlen(tmpstr2) + 1; 1705 cam_periph_unlock(periph); 1706 1707 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1708 1709 cam_periph_lock(periph); 1710 1711extget_bailout: 1712 sbuf_delete(sb); 1713 break; 1714 } 1715 case MTIOCPARAMSET: 1716 { 1717 struct mtsetlist list; 1718 struct mtparamset *ps = (struct mtparamset *)arg; 1719 1720 bzero(&list, sizeof(list)); 1721 list.num_params = 1; 1722 list.param_len = sizeof(*ps); 1723 list.params = ps; 1724 1725 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1726 break; 1727 } 1728 case MTIOCSETLIST: 1729 { 1730 struct mtsetlist *list = (struct mtsetlist *)arg; 1731 1732 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1733 break; 1734 } 1735 case MTIOCERRSTAT: 1736 { 1737 struct scsi_tape_errors *sep = 1738 &((union mterrstat *)arg)->scsi_errstat; 1739 1740 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1741 ("saioctl: MTIOCERRSTAT\n")); 1742 1743 bzero(sep, sizeof(*sep)); 1744 sep->io_resid = softc->last_io_resid; 1745 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1746 sizeof (sep->io_sense)); 1747 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1748 sizeof (sep->io_cdb)); 1749 sep->ctl_resid = softc->last_ctl_resid; 1750 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1751 sizeof (sep->ctl_sense)); 1752 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1753 sizeof (sep->ctl_cdb)); 1754 1755 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1756 didlockperiph) 1757 bzero((caddr_t) &softc->errinfo, 1758 sizeof (softc->errinfo)); 1759 error = 0; 1760 break; 1761 } 1762 case MTIOCTOP: 1763 { 1764 struct mtop *mt; 1765 int count; 1766 1767 PENDING_MOUNT_CHECK(softc, periph, dev); 1768 1769 mt = (struct mtop *)arg; 1770 1771 1772 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1773 ("saioctl: op=0x%x count=0x%x\n", 1774 mt->mt_op, mt->mt_count)); 1775 1776 count = mt->mt_count; 1777 switch (mt->mt_op) { 1778 case MTWEOF: /* write an end-of-file marker */ 1779 /* 1780 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1781 * flag because by keeping track of filemarks 1782 * we have last written we know whether or not 1783 * we need to write more when we close the device. 1784 */ 1785 error = sawritefilemarks(periph, count, FALSE, FALSE); 1786 break; 1787 case MTWEOFI: 1788 /* write an end-of-file marker without waiting */ 1789 error = sawritefilemarks(periph, count, FALSE, TRUE); 1790 break; 1791 case MTWSS: /* write a setmark */ 1792 error = sawritefilemarks(periph, count, TRUE, FALSE); 1793 break; 1794 case MTBSR: /* backward space record */ 1795 case MTFSR: /* forward space record */ 1796 case MTBSF: /* backward space file */ 1797 case MTFSF: /* forward space file */ 1798 case MTBSS: /* backward space setmark */ 1799 case MTFSS: /* forward space setmark */ 1800 case MTEOD: /* space to end of recorded medium */ 1801 { 1802 int nmarks; 1803 1804 spaceop = SS_FILEMARKS; 1805 nmarks = softc->filemarks; 1806 error = sacheckeod(periph); 1807 if (error) { 1808 xpt_print(periph->path, 1809 "EOD check prior to spacing failed\n"); 1810 softc->flags |= SA_FLAG_EIO_PENDING; 1811 break; 1812 } 1813 nmarks -= softc->filemarks; 1814 switch(mt->mt_op) { 1815 case MTBSR: 1816 count = -count; 1817 /* FALLTHROUGH */ 1818 case MTFSR: 1819 spaceop = SS_BLOCKS; 1820 break; 1821 case MTBSF: 1822 count = -count; 1823 /* FALLTHROUGH */ 1824 case MTFSF: 1825 break; 1826 case MTBSS: 1827 count = -count; 1828 /* FALLTHROUGH */ 1829 case MTFSS: 1830 spaceop = SS_SETMARKS; 1831 break; 1832 case MTEOD: 1833 spaceop = SS_EOD; 1834 count = 0; 1835 nmarks = 0; 1836 break; 1837 default: 1838 error = EINVAL; 1839 break; 1840 } 1841 if (error) 1842 break; 1843 1844 nmarks = softc->filemarks; 1845 /* 1846 * XXX: Why are we checking again? 1847 */ 1848 error = sacheckeod(periph); 1849 if (error) 1850 break; 1851 nmarks -= softc->filemarks; 1852 error = saspace(periph, count - nmarks, spaceop); 1853 /* 1854 * At this point, clear that we've written the tape 1855 * and that we've written any filemarks. We really 1856 * don't know what the applications wishes to do next- 1857 * the sacheckeod's will make sure we terminated the 1858 * tape correctly if we'd been writing, but the next 1859 * action the user application takes will set again 1860 * whether we need to write filemarks. 1861 */ 1862 softc->flags &= 1863 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1864 softc->filemarks = 0; 1865 break; 1866 } 1867 case MTREW: /* rewind */ 1868 PENDING_MOUNT_CHECK(softc, periph, dev); 1869 (void) sacheckeod(periph); 1870 error = sarewind(periph); 1871 /* see above */ 1872 softc->flags &= 1873 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1874 softc->flags &= ~SA_FLAG_ERR_PENDING; 1875 softc->filemarks = 0; 1876 break; 1877 case MTERASE: /* erase */ 1878 PENDING_MOUNT_CHECK(softc, periph, dev); 1879 error = saerase(periph, count); 1880 softc->flags &= 1881 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1882 softc->flags &= ~SA_FLAG_ERR_PENDING; 1883 break; 1884 case MTRETENS: /* re-tension tape */ 1885 PENDING_MOUNT_CHECK(softc, periph, dev); 1886 error = saretension(periph); 1887 softc->flags &= 1888 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1889 softc->flags &= ~SA_FLAG_ERR_PENDING; 1890 break; 1891 case MTOFFL: /* rewind and put the drive offline */ 1892 1893 PENDING_MOUNT_CHECK(softc, periph, dev); 1894 1895 (void) sacheckeod(periph); 1896 /* see above */ 1897 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1898 softc->filemarks = 0; 1899 1900 error = sarewind(periph); 1901 /* clear the frozen flag anyway */ 1902 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1903 1904 /* 1905 * Be sure to allow media removal before ejecting. 1906 */ 1907 1908 saprevent(periph, PR_ALLOW); 1909 if (error == 0) { 1910 error = saloadunload(periph, FALSE); 1911 if (error == 0) { 1912 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1913 } 1914 } 1915 break; 1916 1917 case MTLOAD: 1918 error = saloadunload(periph, TRUE); 1919 break; 1920 case MTNOP: /* no operation, sets status only */ 1921 case MTCACHE: /* enable controller cache */ 1922 case MTNOCACHE: /* disable controller cache */ 1923 error = 0; 1924 break; 1925 1926 case MTSETBSIZ: /* Set block size for device */ 1927 1928 PENDING_MOUNT_CHECK(softc, periph, dev); 1929 1930 if ((softc->sili != 0) 1931 && (count != 0)) { 1932 xpt_print(periph->path, "Can't enter fixed " 1933 "block mode with SILI enabled\n"); 1934 error = EINVAL; 1935 break; 1936 } 1937 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1938 0, 0, 0); 1939 if (error == 0) { 1940 softc->last_media_blksize = 1941 softc->media_blksize; 1942 softc->media_blksize = count; 1943 if (count) { 1944 softc->flags |= SA_FLAG_FIXED; 1945 if (powerof2(count)) { 1946 softc->blk_shift = 1947 ffs(count) - 1; 1948 softc->blk_mask = count - 1; 1949 } else { 1950 softc->blk_mask = ~0; 1951 softc->blk_shift = 0; 1952 } 1953 /* 1954 * Make the user's desire 'persistent'. 1955 */ 1956 softc->quirks &= ~SA_QUIRK_VARIABLE; 1957 softc->quirks |= SA_QUIRK_FIXED; 1958 } else { 1959 softc->flags &= ~SA_FLAG_FIXED; 1960 if (softc->max_blk == 0) { 1961 softc->max_blk = ~0; 1962 } 1963 softc->blk_shift = 0; 1964 if (softc->blk_gran != 0) { 1965 softc->blk_mask = 1966 softc->blk_gran - 1; 1967 } else { 1968 softc->blk_mask = 0; 1969 } 1970 /* 1971 * Make the user's desire 'persistent'. 1972 */ 1973 softc->quirks |= SA_QUIRK_VARIABLE; 1974 softc->quirks &= ~SA_QUIRK_FIXED; 1975 } 1976 } 1977 break; 1978 case MTSETDNSTY: /* Set density for device and mode */ 1979 PENDING_MOUNT_CHECK(softc, periph, dev); 1980 1981 if (count > UCHAR_MAX) { 1982 error = EINVAL; 1983 break; 1984 } else { 1985 error = sasetparams(periph, SA_PARAM_DENSITY, 1986 0, count, 0, 0); 1987 } 1988 break; 1989 case MTCOMP: /* enable compression */ 1990 PENDING_MOUNT_CHECK(softc, periph, dev); 1991 /* 1992 * Some devices don't support compression, and 1993 * don't like it if you ask them for the 1994 * compression page. 1995 */ 1996 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1997 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1998 error = ENODEV; 1999 break; 2000 } 2001 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2002 0, 0, count, SF_NO_PRINT); 2003 break; 2004 default: 2005 error = EINVAL; 2006 } 2007 break; 2008 } 2009 case MTIOCIEOT: 2010 case MTIOCEEOT: 2011 error = 0; 2012 break; 2013 case MTIOCRDSPOS: 2014 PENDING_MOUNT_CHECK(softc, periph, dev); 2015 error = sardpos(periph, 0, (u_int32_t *) arg); 2016 break; 2017 case MTIOCRDHPOS: 2018 PENDING_MOUNT_CHECK(softc, periph, dev); 2019 error = sardpos(periph, 1, (u_int32_t *) arg); 2020 break; 2021 case MTIOCSLOCATE: 2022 case MTIOCHLOCATE: { 2023 struct mtlocate locate_info; 2024 int hard; 2025 2026 bzero(&locate_info, sizeof(locate_info)); 2027 locate_info.logical_id = *((uint32_t *)arg); 2028 if (cmd == MTIOCSLOCATE) 2029 hard = 0; 2030 else 2031 hard = 1; 2032 2033 PENDING_MOUNT_CHECK(softc, periph, dev); 2034 2035 error = sasetpos(periph, hard, &locate_info); 2036 break; 2037 } 2038 case MTIOCEXTLOCATE: 2039 PENDING_MOUNT_CHECK(softc, periph, dev); 2040 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2041 softc->flags &= 2042 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2043 softc->flags &= ~SA_FLAG_ERR_PENDING; 2044 softc->filemarks = 0; 2045 break; 2046 case MTIOCGETEOTMODEL: 2047 error = 0; 2048 if (softc->quirks & SA_QUIRK_1FM) 2049 mode = 1; 2050 else 2051 mode = 2; 2052 *((u_int32_t *) arg) = mode; 2053 break; 2054 case MTIOCSETEOTMODEL: 2055 error = 0; 2056 switch (*((u_int32_t *) arg)) { 2057 case 1: 2058 softc->quirks &= ~SA_QUIRK_2FM; 2059 softc->quirks |= SA_QUIRK_1FM; 2060 break; 2061 case 2: 2062 softc->quirks &= ~SA_QUIRK_1FM; 2063 softc->quirks |= SA_QUIRK_2FM; 2064 break; 2065 default: 2066 error = EINVAL; 2067 break; 2068 } 2069 break; 2070 case MTIOCRBLIM: { 2071 struct mtrblim *rblim; 2072 2073 rblim = (struct mtrblim *)arg; 2074 2075 rblim->granularity = softc->blk_gran; 2076 rblim->min_block_length = softc->min_blk; 2077 rblim->max_block_length = softc->max_blk; 2078 break; 2079 } 2080 default: 2081 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2082 break; 2083 } 2084 2085 /* 2086 * Check to see if we cleared a frozen state 2087 */ 2088 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2089 switch(cmd) { 2090 case MTIOCRDSPOS: 2091 case MTIOCRDHPOS: 2092 case MTIOCSLOCATE: 2093 case MTIOCHLOCATE: 2094 /* 2095 * XXX KDM look at this. 2096 */ 2097 softc->fileno = (daddr_t) -1; 2098 softc->blkno = (daddr_t) -1; 2099 softc->rep_blkno = (daddr_t) -1; 2100 softc->rep_fileno = (daddr_t) -1; 2101 softc->partition = (daddr_t) -1; 2102 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2103 xpt_print(periph->path, 2104 "tape state now unfrozen.\n"); 2105 break; 2106 default: 2107 break; 2108 } 2109 } 2110 if (didlockperiph) { 2111 cam_periph_unhold(periph); 2112 } 2113 cam_periph_unlock(periph); 2114 return (error); 2115} 2116 2117static void 2118sainit(void) 2119{ 2120 cam_status status; 2121 2122 /* 2123 * Install a global async callback. 2124 */ 2125 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2126 2127 if (status != CAM_REQ_CMP) { 2128 printf("sa: Failed to attach master async callback " 2129 "due to status 0x%x!\n", status); 2130 } 2131} 2132 2133static void 2134sadevgonecb(void *arg) 2135{ 2136 struct cam_periph *periph; 2137 struct mtx *mtx; 2138 struct sa_softc *softc; 2139 2140 periph = (struct cam_periph *)arg; 2141 softc = (struct sa_softc *)periph->softc; 2142 2143 mtx = cam_periph_mtx(periph); 2144 mtx_lock(mtx); 2145 2146 softc->num_devs_to_destroy--; 2147 if (softc->num_devs_to_destroy == 0) { 2148 int i; 2149 2150 /* 2151 * When we have gotten all of our callbacks, we will get 2152 * no more close calls from devfs. So if we have any 2153 * dangling opens, we need to release the reference held 2154 * for that particular context. 2155 */ 2156 for (i = 0; i < softc->open_count; i++) 2157 cam_periph_release_locked(periph); 2158 2159 softc->open_count = 0; 2160 2161 /* 2162 * Release the reference held for devfs, all of our 2163 * instances are gone now. 2164 */ 2165 cam_periph_release_locked(periph); 2166 } 2167 2168 /* 2169 * We reference the lock directly here, instead of using 2170 * cam_periph_unlock(). The reason is that the final call to 2171 * cam_periph_release_locked() above could result in the periph 2172 * getting freed. If that is the case, dereferencing the periph 2173 * with a cam_periph_unlock() call would cause a page fault. 2174 */ 2175 mtx_unlock(mtx); 2176} 2177 2178static void 2179saoninvalidate(struct cam_periph *periph) 2180{ 2181 struct sa_softc *softc; 2182 2183 softc = (struct sa_softc *)periph->softc; 2184 2185 /* 2186 * De-register any async callbacks. 2187 */ 2188 xpt_register_async(0, saasync, periph, periph->path); 2189 2190 softc->flags |= SA_FLAG_INVALID; 2191 2192 /* 2193 * Return all queued I/O with ENXIO. 2194 * XXX Handle any transactions queued to the card 2195 * with XPT_ABORT_CCB. 2196 */ 2197 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2198 softc->queue_count = 0; 2199 2200 /* 2201 * Tell devfs that all of our devices have gone away, and ask for a 2202 * callback when it has cleaned up its state. 2203 */ 2204 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2205 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2206 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2207 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2208} 2209 2210static void 2211sacleanup(struct cam_periph *periph) 2212{ 2213 struct sa_softc *softc; 2214 2215 softc = (struct sa_softc *)periph->softc; 2216 2217 cam_periph_unlock(periph); 2218 2219 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2220 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2221 xpt_print(periph->path, "can't remove sysctl context\n"); 2222 2223 cam_periph_lock(periph); 2224 2225 devstat_remove_entry(softc->device_stats); 2226 2227 free(softc, M_SCSISA); 2228} 2229 2230static void 2231saasync(void *callback_arg, u_int32_t code, 2232 struct cam_path *path, void *arg) 2233{ 2234 struct cam_periph *periph; 2235 2236 periph = (struct cam_periph *)callback_arg; 2237 switch (code) { 2238 case AC_FOUND_DEVICE: 2239 { 2240 struct ccb_getdev *cgd; 2241 cam_status status; 2242 2243 cgd = (struct ccb_getdev *)arg; 2244 if (cgd == NULL) 2245 break; 2246 2247 if (cgd->protocol != PROTO_SCSI) 2248 break; 2249 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 2250 break; 2251 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2252 break; 2253 2254 /* 2255 * Allocate a peripheral instance for 2256 * this device and start the probe 2257 * process. 2258 */ 2259 status = cam_periph_alloc(saregister, saoninvalidate, 2260 sacleanup, sastart, 2261 "sa", CAM_PERIPH_BIO, path, 2262 saasync, AC_FOUND_DEVICE, cgd); 2263 2264 if (status != CAM_REQ_CMP 2265 && status != CAM_REQ_INPROG) 2266 printf("saasync: Unable to probe new device " 2267 "due to status 0x%x\n", status); 2268 break; 2269 } 2270 default: 2271 cam_periph_async(periph, code, path, arg); 2272 break; 2273 } 2274} 2275 2276static void 2277sasetupdev(struct sa_softc *softc, struct cdev *dev) 2278{ 2279 2280 dev->si_iosize_max = softc->maxio; 2281 dev->si_flags |= softc->si_flags; 2282 /* 2283 * Keep a count of how many non-alias devices we have created, 2284 * so we can make sure we clean them all up on shutdown. Aliases 2285 * are cleaned up when we destroy the device they're an alias for. 2286 */ 2287 if ((dev->si_flags & SI_ALIAS) == 0) 2288 softc->num_devs_to_destroy++; 2289} 2290 2291static void 2292sasysctlinit(void *context, int pending) 2293{ 2294 struct cam_periph *periph; 2295 struct sa_softc *softc; 2296 char tmpstr[80], tmpstr2[80]; 2297 2298 periph = (struct cam_periph *)context; 2299 /* 2300 * If the periph is invalid, no need to setup the sysctls. 2301 */ 2302 if (periph->flags & CAM_PERIPH_INVALID) 2303 goto bailout; 2304 2305 softc = (struct sa_softc *)periph->softc; 2306 2307 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2308 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2309 2310 sysctl_ctx_init(&softc->sysctl_ctx); 2311 softc->flags |= SA_FLAG_SCTX_INIT; 2312 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 2313 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2314 CTLFLAG_RD, 0, tmpstr); 2315 if (softc->sysctl_tree == NULL) 2316 goto bailout; 2317 2318 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2319 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2320 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2321 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2322 OID_AUTO, "maxio", CTLFLAG_RD, 2323 &softc->maxio, 0, "Maximum I/O size"); 2324 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2325 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2326 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2327 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2328 OID_AUTO, "inject_eom", CTLFLAG_RW, 2329 &softc->inject_eom, 0, "Queue EOM for the next write/read"); 2330 2331bailout: 2332 /* 2333 * Release the reference that was held when this task was enqueued. 2334 */ 2335 cam_periph_release(periph); 2336} 2337 2338static cam_status 2339saregister(struct cam_periph *periph, void *arg) 2340{ 2341 struct sa_softc *softc; 2342 struct ccb_getdev *cgd; 2343 struct ccb_pathinq cpi; 2344 struct make_dev_args args; 2345 caddr_t match; 2346 char tmpstr[80]; 2347 int error; 2348 2349 cgd = (struct ccb_getdev *)arg; 2350 if (cgd == NULL) { 2351 printf("saregister: no getdev CCB, can't register device\n"); 2352 return (CAM_REQ_CMP_ERR); 2353 } 2354 2355 softc = (struct sa_softc *) 2356 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2357 if (softc == NULL) { 2358 printf("saregister: Unable to probe new device. " 2359 "Unable to allocate softc\n"); 2360 return (CAM_REQ_CMP_ERR); 2361 } 2362 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2363 softc->state = SA_STATE_NORMAL; 2364 softc->fileno = (daddr_t) -1; 2365 softc->blkno = (daddr_t) -1; 2366 softc->rep_fileno = (daddr_t) -1; 2367 softc->rep_blkno = (daddr_t) -1; 2368 softc->partition = (daddr_t) -1; 2369 softc->bop = -1; 2370 softc->eop = -1; 2371 softc->bpew = -1; 2372 2373 bioq_init(&softc->bio_queue); 2374 softc->periph = periph; 2375 periph->softc = softc; 2376 2377 /* 2378 * See if this device has any quirks. 2379 */ 2380 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2381 (caddr_t)sa_quirk_table, 2382 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 2383 sizeof(*sa_quirk_table), scsi_inquiry_match); 2384 2385 if (match != NULL) { 2386 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2387 softc->last_media_blksize = 2388 ((struct sa_quirk_entry *)match)->prefblk; 2389 } else 2390 softc->quirks = SA_QUIRK_NONE; 2391 2392 /* 2393 * Long format data for READ POSITION was introduced in SSC, which 2394 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2395 * reports that it is SCSI-2 or older, it is unlikely to support 2396 * long position data, but it might. Some drives from that era 2397 * claim to be SCSI-2, but do support long position information. 2398 * So, instead of immediately disabling long position information 2399 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2400 * then disable long position information if we get an error. 2401 */ 2402 if (cgd->inq_data.version <= SCSI_REV_CCS) 2403 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2404 2405 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2406 struct ccb_dev_advinfo cdai; 2407 struct scsi_vpd_extended_inquiry_data ext_inq; 2408 2409 bzero(&ext_inq, sizeof(ext_inq)); 2410 2411 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2412 2413 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2414 cdai.flags = CDAI_FLAG_NONE; 2415 cdai.buftype = CDAI_TYPE_EXT_INQ; 2416 cdai.bufsiz = sizeof(ext_inq); 2417 cdai.buf = (uint8_t *)&ext_inq; 2418 xpt_action((union ccb *)&cdai); 2419 2420 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2421 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2422 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2423 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2424 softc->flags |= SA_FLAG_PROTECT_SUPP; 2425 } 2426 2427 bzero(&cpi, sizeof(cpi)); 2428 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2429 cpi.ccb_h.func_code = XPT_PATH_INQ; 2430 xpt_action((union ccb *)&cpi); 2431 2432 /* 2433 * The SA driver supports a blocksize, but we don't know the 2434 * blocksize until we media is inserted. So, set a flag to 2435 * indicate that the blocksize is unavailable right now. 2436 */ 2437 cam_periph_unlock(periph); 2438 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2439 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2440 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2441 2442 /* 2443 * Load the default value that is either compiled in, or loaded 2444 * in the global kern.cam.sa.allow_io_split tunable. 2445 */ 2446 softc->allow_io_split = sa_allow_io_split; 2447 2448 /* 2449 * Load a per-instance tunable, if it exists. NOTE that this 2450 * tunable WILL GO AWAY in FreeBSD 11.0. 2451 */ 2452 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2453 periph->unit_number); 2454 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2455 2456 /* 2457 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2458 * the smaller of cpi.maxio or MAXPHYS. 2459 */ 2460 if (cpi.maxio == 0) 2461 softc->maxio = DFLTPHYS; 2462 else if (cpi.maxio > MAXPHYS) 2463 softc->maxio = MAXPHYS; 2464 else 2465 softc->maxio = cpi.maxio; 2466 2467 /* 2468 * Record the controller's maximum I/O size so we can report it to 2469 * the user later. 2470 */ 2471 softc->cpi_maxio = cpi.maxio; 2472 2473 /* 2474 * By default we tell physio that we do not want our I/O split. 2475 * The user needs to have a 1:1 mapping between the size of his 2476 * write to a tape character device and the size of the write 2477 * that actually goes down to the drive. 2478 */ 2479 if (softc->allow_io_split == 0) 2480 softc->si_flags = SI_NOSPLIT; 2481 else 2482 softc->si_flags = 0; 2483 2484 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2485 2486 /* 2487 * If the SIM supports unmapped I/O, let physio know that we can 2488 * handle unmapped buffers. 2489 */ 2490 if (cpi.hba_misc & PIM_UNMAPPED) 2491 softc->si_flags |= SI_UNMAPPED; 2492 2493 /* 2494 * Acquire a reference to the periph before we create the devfs 2495 * instances for it. We'll release this reference once the devfs 2496 * instances have been freed. 2497 */ 2498 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 2499 xpt_print(periph->path, "%s: lost periph during " 2500 "registration!\n", __func__); 2501 cam_periph_lock(periph); 2502 return (CAM_REQ_CMP_ERR); 2503 } 2504 2505 make_dev_args_init(&args); 2506 args.mda_devsw = &sa_cdevsw; 2507 args.mda_si_drv1 = softc->periph; 2508 args.mda_uid = UID_ROOT; 2509 args.mda_gid = GID_OPERATOR; 2510 args.mda_mode = 0660; 2511 2512 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R); 2513 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl", 2514 periph->periph_name, periph->unit_number); 2515 if (error != 0) { 2516 cam_periph_lock(periph); 2517 return (CAM_REQ_CMP_ERR); 2518 } 2519 sasetupdev(softc, softc->devs.ctl_dev); 2520 2521 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R); 2522 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d", 2523 periph->periph_name, periph->unit_number); 2524 if (error != 0) { 2525 cam_periph_lock(periph); 2526 return (CAM_REQ_CMP_ERR); 2527 } 2528 sasetupdev(softc, softc->devs.r_dev); 2529 2530 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR); 2531 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d", 2532 periph->periph_name, periph->unit_number); 2533 if (error != 0) { 2534 cam_periph_lock(periph); 2535 return (CAM_REQ_CMP_ERR); 2536 } 2537 sasetupdev(softc, softc->devs.nr_dev); 2538 2539 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER); 2540 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d", 2541 periph->periph_name, periph->unit_number); 2542 if (error != 0) { 2543 cam_periph_lock(periph); 2544 return (CAM_REQ_CMP_ERR); 2545 } 2546 sasetupdev(softc, softc->devs.er_dev); 2547 2548 cam_periph_lock(periph); 2549 2550 softc->density_type_bits[0] = 0; 2551 softc->density_type_bits[1] = SRDS_MEDIA; 2552 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2553 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2554 /* 2555 * Bump the peripheral refcount for the sysctl thread, in case we 2556 * get invalidated before the thread has a chance to run. 2557 */ 2558 cam_periph_acquire(periph); 2559 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2560 2561 /* 2562 * Add an async callback so that we get 2563 * notified if this device goes away. 2564 */ 2565 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2566 2567 xpt_announce_periph(periph, NULL); 2568 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2569 2570 return (CAM_REQ_CMP); 2571} 2572 2573static void 2574sastart(struct cam_periph *periph, union ccb *start_ccb) 2575{ 2576 struct sa_softc *softc; 2577 2578 softc = (struct sa_softc *)periph->softc; 2579 2580 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2581 2582 2583 switch (softc->state) { 2584 case SA_STATE_NORMAL: 2585 { 2586 /* Pull a buffer from the queue and get going on it */ 2587 struct bio *bp; 2588 2589 /* 2590 * See if there is a buf with work for us to do.. 2591 */ 2592 bp = bioq_first(&softc->bio_queue); 2593 if (bp == NULL) { 2594 xpt_release_ccb(start_ccb); 2595 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0) 2596 || (softc->inject_eom != 0)) { 2597 struct bio *done_bp; 2598 2599 if (softc->inject_eom != 0) { 2600 softc->flags |= SA_FLAG_EOM_PENDING; 2601 softc->inject_eom = 0; 2602 /* 2603 * If we're injecting EOM for writes, we 2604 * need to keep PEWS set for 3 queries 2605 * to cover 2 position requests from the 2606 * kernel via sagetpos(), and then allow 2607 * for one for the user to see the BPEW 2608 * flag (e.g. via mt status). After that, 2609 * it will be cleared. 2610 */ 2611 if (bp->bio_cmd == BIO_WRITE) 2612 softc->set_pews_status = 3; 2613 else 2614 softc->set_pews_status = 1; 2615 } 2616again: 2617 softc->queue_count--; 2618 bioq_remove(&softc->bio_queue, bp); 2619 bp->bio_resid = bp->bio_bcount; 2620 done_bp = bp; 2621 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2622 /* 2623 * We have two different behaviors for 2624 * writes when we hit either Early Warning 2625 * or the PEWZ (Programmable Early Warning 2626 * Zone). The default behavior is that 2627 * for all writes that are currently 2628 * queued after the write where we saw the 2629 * early warning, we will return the write 2630 * with the residual equal to the count. 2631 * i.e. tell the application that 0 bytes 2632 * were written. 2633 * 2634 * The alternate behavior, which is enabled 2635 * when eot_warn is set, is that in 2636 * addition to setting the residual equal 2637 * to the count, we will set the error 2638 * to ENOSPC. 2639 * 2640 * In either case, once queued writes are 2641 * cleared out, we clear the error flag 2642 * (see below) and the application is free to 2643 * attempt to write more. 2644 */ 2645 if (softc->eot_warn != 0) { 2646 bp->bio_flags |= BIO_ERROR; 2647 bp->bio_error = ENOSPC; 2648 } else 2649 bp->bio_error = 0; 2650 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2651 /* 2652 * This can only happen if we're reading 2653 * in fixed length mode. In this case, 2654 * we dump the rest of the list the 2655 * same way. 2656 */ 2657 bp->bio_error = 0; 2658 if (bioq_first(&softc->bio_queue) != NULL) { 2659 biodone(done_bp); 2660 goto again; 2661 } 2662 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2663 bp->bio_error = EIO; 2664 bp->bio_flags |= BIO_ERROR; 2665 } 2666 bp = bioq_first(&softc->bio_queue); 2667 /* 2668 * Only if we have no other buffers queued up 2669 * do we clear the pending error flag. 2670 */ 2671 if (bp == NULL) 2672 softc->flags &= ~SA_FLAG_ERR_PENDING; 2673 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2674 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2675 "%d more buffers queued up\n", 2676 (softc->flags & SA_FLAG_ERR_PENDING), 2677 (bp != NULL)? "not " : " ", softc->queue_count)); 2678 xpt_release_ccb(start_ccb); 2679 biodone(done_bp); 2680 } else { 2681 u_int32_t length; 2682 2683 bioq_remove(&softc->bio_queue, bp); 2684 softc->queue_count--; 2685 2686 length = bp->bio_bcount; 2687 2688 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2689 if (softc->blk_shift != 0) { 2690 length = length >> softc->blk_shift; 2691 } else if (softc->media_blksize != 0) { 2692 length = length / softc->media_blksize; 2693 } else { 2694 bp->bio_error = EIO; 2695 xpt_print(periph->path, "zero blocksize" 2696 " for FIXED length writes?\n"); 2697 biodone(bp); 2698 break; 2699 } 2700#if 0 2701 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2702 ("issuing a %d fixed record %s\n", 2703 length, (bp->bio_cmd == BIO_READ)? "read" : 2704 "write")); 2705#endif 2706 } else { 2707#if 0 2708 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2709 ("issuing a %d variable byte %s\n", 2710 length, (bp->bio_cmd == BIO_READ)? "read" : 2711 "write")); 2712#endif 2713 } 2714 devstat_start_transaction_bio(softc->device_stats, bp); 2715 /* 2716 * Some people have theorized that we should 2717 * suppress illegal length indication if we are 2718 * running in variable block mode so that we don't 2719 * have to request sense every time our requested 2720 * block size is larger than the written block. 2721 * The residual information from the ccb allows 2722 * us to identify this situation anyway. The only 2723 * problem with this is that we will not get 2724 * information about blocks that are larger than 2725 * our read buffer unless we set the block size 2726 * in the mode page to something other than 0. 2727 * 2728 * I believe that this is a non-issue. If user apps 2729 * don't adjust their read size to match our record 2730 * size, that's just life. Anyway, the typical usage 2731 * would be to issue, e.g., 64KB reads and occasionally 2732 * have to do deal with 512 byte or 1KB intermediate 2733 * records. 2734 * 2735 * That said, though, we now support setting the 2736 * SILI bit on reads, and we set the blocksize to 4 2737 * bytes when we do that. This gives us 2738 * compatibility with software that wants this, 2739 * although the only real difference between that 2740 * and not setting the SILI bit on reads is that we 2741 * won't get a check condition on reads where our 2742 * request size is larger than the block on tape. 2743 * That probably only makes a real difference in 2744 * non-packetized SCSI, where you have to go back 2745 * to the drive to request sense and thus incur 2746 * more latency. 2747 */ 2748 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2749 MTIO_DSREG_RD : MTIO_DSREG_WR; 2750 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2751 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2752 SCSI_RW_READ : SCSI_RW_WRITE) | 2753 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2754 SCSI_RW_BIO : 0), softc->sili, 2755 (softc->flags & SA_FLAG_FIXED) != 0, length, 2756 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2757 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2758 IO_TIMEOUT); 2759 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2760 start_ccb->ccb_h.ccb_bp = bp; 2761 bp = bioq_first(&softc->bio_queue); 2762 xpt_action(start_ccb); 2763 } 2764 2765 if (bp != NULL) { 2766 /* Have more work to do, so ensure we stay scheduled */ 2767 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2768 } 2769 break; 2770 } 2771 case SA_STATE_ABNORMAL: 2772 default: 2773 panic("state 0x%x in sastart", softc->state); 2774 break; 2775 } 2776} 2777 2778 2779static void 2780sadone(struct cam_periph *periph, union ccb *done_ccb) 2781{ 2782 struct sa_softc *softc; 2783 struct ccb_scsiio *csio; 2784 struct bio *bp; 2785 int error; 2786 2787 softc = (struct sa_softc *)periph->softc; 2788 csio = &done_ccb->csio; 2789 2790 softc->dsreg = MTIO_DSREG_REST; 2791 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2792 error = 0; 2793 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2794 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2795 /* 2796 * A retry was scheduled, so just return. 2797 */ 2798 return; 2799 } 2800 } 2801 2802 if (error == EIO) { 2803 2804 /* 2805 * Catastrophic error. Mark the tape as frozen 2806 * (we no longer know tape position). 2807 * 2808 * Return all queued I/O with EIO, and unfreeze 2809 * our queue so that future transactions that 2810 * attempt to fix this problem can get to the 2811 * device. 2812 * 2813 */ 2814 2815 softc->flags |= SA_FLAG_TAPE_FROZEN; 2816 bioq_flush(&softc->bio_queue, NULL, EIO); 2817 } 2818 if (error != 0) { 2819 bp->bio_resid = bp->bio_bcount; 2820 bp->bio_error = error; 2821 bp->bio_flags |= BIO_ERROR; 2822 /* 2823 * In the error case, position is updated in saerror. 2824 */ 2825 } else { 2826 bp->bio_resid = csio->resid; 2827 bp->bio_error = 0; 2828 if (csio->resid != 0) { 2829 bp->bio_flags |= BIO_ERROR; 2830 } 2831 if (bp->bio_cmd == BIO_WRITE) { 2832 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2833 softc->filemarks = 0; 2834 } 2835 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2836 (softc->blkno != (daddr_t) -1)) { 2837 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2838 u_int32_t l; 2839 if (softc->blk_shift != 0) { 2840 l = bp->bio_bcount >> 2841 softc->blk_shift; 2842 } else { 2843 l = bp->bio_bcount / 2844 softc->media_blksize; 2845 } 2846 softc->blkno += (daddr_t) l; 2847 } else { 2848 softc->blkno++; 2849 } 2850 } 2851 } 2852 /* 2853 * If we had an error (immediate or pending), 2854 * release the device queue now. 2855 */ 2856 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2857 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2858 if (error || bp->bio_resid) { 2859 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2860 ("error %d resid %ld count %ld\n", error, 2861 bp->bio_resid, bp->bio_bcount)); 2862 } 2863 biofinish(bp, softc->device_stats, 0); 2864 xpt_release_ccb(done_ccb); 2865} 2866 2867/* 2868 * Mount the tape (make sure it's ready for I/O). 2869 */ 2870static int 2871samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2872{ 2873 struct sa_softc *softc; 2874 union ccb *ccb; 2875 int error; 2876 2877 /* 2878 * oflags can be checked for 'kind' of open (read-only check) - later 2879 * dev can be checked for a control-mode or compression open - later 2880 */ 2881 UNUSED_PARAMETER(oflags); 2882 UNUSED_PARAMETER(dev); 2883 2884 2885 softc = (struct sa_softc *)periph->softc; 2886 2887 /* 2888 * This should determine if something has happened since the last 2889 * open/mount that would invalidate the mount. We do *not* want 2890 * to retry this command- we just want the status. But we only 2891 * do this if we're mounted already- if we're not mounted, 2892 * we don't care about the unit read state and can instead use 2893 * this opportunity to attempt to reserve the tape unit. 2894 */ 2895 2896 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2897 ccb = cam_periph_getccb(periph, 1); 2898 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2899 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2900 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2901 softc->device_stats); 2902 if (error == ENXIO) { 2903 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2904 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2905 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2906 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2907 softc->device_stats); 2908 } else if (error) { 2909 /* 2910 * We don't need to freeze the tape because we 2911 * will now attempt to rewind/load it. 2912 */ 2913 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2914 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2915 xpt_print(periph->path, 2916 "error %d on TUR in samount\n", error); 2917 } 2918 } 2919 } else { 2920 error = sareservereleaseunit(periph, TRUE); 2921 if (error) { 2922 return (error); 2923 } 2924 ccb = cam_periph_getccb(periph, 1); 2925 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2926 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2927 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2928 softc->device_stats); 2929 } 2930 2931 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2932 struct scsi_read_block_limits_data *rblim = NULL; 2933 int comp_enabled, comp_supported; 2934 u_int8_t write_protect, guessing = 0; 2935 2936 /* 2937 * Clear out old state. 2938 */ 2939 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2940 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2941 softc->filemarks = 0; 2942 2943 /* 2944 * *Very* first off, make sure we're loaded to BOT. 2945 */ 2946 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2947 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2948 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2949 softc->device_stats); 2950 2951 /* 2952 * In case this doesn't work, do a REWIND instead 2953 */ 2954 if (error) { 2955 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2956 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2957 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2958 softc->device_stats); 2959 } 2960 if (error) { 2961 xpt_release_ccb(ccb); 2962 goto exit; 2963 } 2964 2965 /* 2966 * Do a dummy test read to force access to the 2967 * media so that the drive will really know what's 2968 * there. We actually don't really care what the 2969 * blocksize on tape is and don't expect to really 2970 * read a full record. 2971 */ 2972 rblim = (struct scsi_read_block_limits_data *) 2973 malloc(8192, M_SCSISA, M_NOWAIT); 2974 if (rblim == NULL) { 2975 xpt_print(periph->path, "no memory for test read\n"); 2976 xpt_release_ccb(ccb); 2977 error = ENOMEM; 2978 goto exit; 2979 } 2980 2981 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2982 scsi_sa_read_write(&ccb->csio, 0, sadone, 2983 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2984 (void *) rblim, 8192, SSD_FULL_SIZE, 2985 IO_TIMEOUT); 2986 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2987 softc->device_stats); 2988 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2989 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2990 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2991 SF_NO_PRINT | SF_RETRY_UA, 2992 softc->device_stats); 2993 if (error) { 2994 xpt_print(periph->path, 2995 "unable to rewind after test read\n"); 2996 xpt_release_ccb(ccb); 2997 goto exit; 2998 } 2999 } 3000 3001 /* 3002 * Next off, determine block limits. 3003 */ 3004 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 3005 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3006 3007 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 3008 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 3009 3010 xpt_release_ccb(ccb); 3011 3012 if (error != 0) { 3013 /* 3014 * If it's less than SCSI-2, READ BLOCK LIMITS is not 3015 * a MANDATORY command. Anyway- it doesn't matter- 3016 * we can proceed anyway. 3017 */ 3018 softc->blk_gran = 0; 3019 softc->max_blk = ~0; 3020 softc->min_blk = 0; 3021 } else { 3022 if (softc->scsi_rev >= SCSI_REV_SPC) { 3023 softc->blk_gran = RBL_GRAN(rblim); 3024 } else { 3025 softc->blk_gran = 0; 3026 } 3027 /* 3028 * We take max_blk == min_blk to mean a default to 3029 * fixed mode- but note that whatever we get out of 3030 * sagetparams below will actually determine whether 3031 * we are actually *in* fixed mode. 3032 */ 3033 softc->max_blk = scsi_3btoul(rblim->maximum); 3034 softc->min_blk = scsi_2btoul(rblim->minimum); 3035 3036 3037 } 3038 /* 3039 * Next, perform a mode sense to determine 3040 * current density, blocksize, compression etc. 3041 */ 3042 error = sagetparams(periph, SA_PARAM_ALL, 3043 &softc->media_blksize, 3044 &softc->media_density, 3045 &softc->media_numblks, 3046 &softc->buffer_mode, &write_protect, 3047 &softc->speed, &comp_supported, 3048 &comp_enabled, &softc->comp_algorithm, 3049 NULL, NULL, 0, 0); 3050 3051 if (error != 0) { 3052 /* 3053 * We could work a little harder here. We could 3054 * adjust our attempts to get information. It 3055 * might be an ancient tape drive. If someone 3056 * nudges us, we'll do that. 3057 */ 3058 goto exit; 3059 } 3060 3061 /* 3062 * If no quirk has determined that this is a device that is 3063 * preferred to be in fixed or variable mode, now is the time 3064 * to find out. 3065 */ 3066 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3067 guessing = 1; 3068 /* 3069 * This could be expensive to find out. Luckily we 3070 * only need to do this once. If we start out in 3071 * 'default' mode, try and set ourselves to one 3072 * of the densities that would determine a wad 3073 * of other stuff. Go from highest to lowest. 3074 */ 3075 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3076 int i; 3077 static u_int8_t ctry[] = { 3078 SCSI_DENSITY_HALFINCH_PE, 3079 SCSI_DENSITY_HALFINCH_6250C, 3080 SCSI_DENSITY_HALFINCH_6250, 3081 SCSI_DENSITY_HALFINCH_1600, 3082 SCSI_DENSITY_HALFINCH_800, 3083 SCSI_DENSITY_QIC_4GB, 3084 SCSI_DENSITY_QIC_2GB, 3085 SCSI_DENSITY_QIC_525_320, 3086 SCSI_DENSITY_QIC_150, 3087 SCSI_DENSITY_QIC_120, 3088 SCSI_DENSITY_QIC_24, 3089 SCSI_DENSITY_QIC_11_9TRK, 3090 SCSI_DENSITY_QIC_11_4TRK, 3091 SCSI_DENSITY_QIC_1320, 3092 SCSI_DENSITY_QIC_3080, 3093 0 3094 }; 3095 for (i = 0; ctry[i]; i++) { 3096 error = sasetparams(periph, 3097 SA_PARAM_DENSITY, 0, ctry[i], 3098 0, SF_NO_PRINT); 3099 if (error == 0) { 3100 softc->media_density = ctry[i]; 3101 break; 3102 } 3103 } 3104 } 3105 switch (softc->media_density) { 3106 case SCSI_DENSITY_QIC_11_4TRK: 3107 case SCSI_DENSITY_QIC_11_9TRK: 3108 case SCSI_DENSITY_QIC_24: 3109 case SCSI_DENSITY_QIC_120: 3110 case SCSI_DENSITY_QIC_150: 3111 case SCSI_DENSITY_QIC_525_320: 3112 case SCSI_DENSITY_QIC_1320: 3113 case SCSI_DENSITY_QIC_3080: 3114 softc->quirks &= ~SA_QUIRK_2FM; 3115 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3116 softc->last_media_blksize = 512; 3117 break; 3118 case SCSI_DENSITY_QIC_4GB: 3119 case SCSI_DENSITY_QIC_2GB: 3120 softc->quirks &= ~SA_QUIRK_2FM; 3121 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3122 softc->last_media_blksize = 1024; 3123 break; 3124 default: 3125 softc->last_media_blksize = 3126 softc->media_blksize; 3127 softc->quirks |= SA_QUIRK_VARIABLE; 3128 break; 3129 } 3130 } 3131 3132 /* 3133 * If no quirk has determined that this is a device that needs 3134 * to have 2 Filemarks at EOD, now is the time to find out. 3135 */ 3136 3137 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3138 switch (softc->media_density) { 3139 case SCSI_DENSITY_HALFINCH_800: 3140 case SCSI_DENSITY_HALFINCH_1600: 3141 case SCSI_DENSITY_HALFINCH_6250: 3142 case SCSI_DENSITY_HALFINCH_6250C: 3143 case SCSI_DENSITY_HALFINCH_PE: 3144 softc->quirks &= ~SA_QUIRK_1FM; 3145 softc->quirks |= SA_QUIRK_2FM; 3146 break; 3147 default: 3148 break; 3149 } 3150 } 3151 3152 /* 3153 * Now validate that some info we got makes sense. 3154 */ 3155 if ((softc->max_blk < softc->media_blksize) || 3156 (softc->min_blk > softc->media_blksize && 3157 softc->media_blksize)) { 3158 xpt_print(periph->path, 3159 "BLOCK LIMITS (%d..%d) could not match current " 3160 "block settings (%d)- adjusting\n", softc->min_blk, 3161 softc->max_blk, softc->media_blksize); 3162 softc->max_blk = softc->min_blk = 3163 softc->media_blksize; 3164 } 3165 3166 /* 3167 * Now put ourselves into the right frame of mind based 3168 * upon quirks... 3169 */ 3170tryagain: 3171 /* 3172 * If we want to be in FIXED mode and our current blocksize 3173 * is not equal to our last blocksize (if nonzero), try and 3174 * set ourselves to this last blocksize (as the 'preferred' 3175 * block size). The initial quirkmatch at registry sets the 3176 * initial 'last' blocksize. If, for whatever reason, this 3177 * 'last' blocksize is zero, set the blocksize to 512, 3178 * or min_blk if that's larger. 3179 */ 3180 if ((softc->quirks & SA_QUIRK_FIXED) && 3181 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3182 (softc->media_blksize != softc->last_media_blksize)) { 3183 softc->media_blksize = softc->last_media_blksize; 3184 if (softc->media_blksize == 0) { 3185 softc->media_blksize = 512; 3186 if (softc->media_blksize < softc->min_blk) { 3187 softc->media_blksize = softc->min_blk; 3188 } 3189 } 3190 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3191 softc->media_blksize, 0, 0, SF_NO_PRINT); 3192 if (error) { 3193 xpt_print(periph->path, 3194 "unable to set fixed blocksize to %d\n", 3195 softc->media_blksize); 3196 goto exit; 3197 } 3198 } 3199 3200 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3201 (softc->media_blksize != 0)) { 3202 softc->last_media_blksize = softc->media_blksize; 3203 softc->media_blksize = 0; 3204 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3205 0, 0, 0, SF_NO_PRINT); 3206 if (error) { 3207 /* 3208 * If this fails and we were guessing, just 3209 * assume that we got it wrong and go try 3210 * fixed block mode. Don't even check against 3211 * density code at this point. 3212 */ 3213 if (guessing) { 3214 softc->quirks &= ~SA_QUIRK_VARIABLE; 3215 softc->quirks |= SA_QUIRK_FIXED; 3216 if (softc->last_media_blksize == 0) 3217 softc->last_media_blksize = 512; 3218 goto tryagain; 3219 } 3220 xpt_print(periph->path, 3221 "unable to set variable blocksize\n"); 3222 goto exit; 3223 } 3224 } 3225 3226 /* 3227 * Now that we have the current block size, 3228 * set up some parameters for sastart's usage. 3229 */ 3230 if (softc->media_blksize) { 3231 softc->flags |= SA_FLAG_FIXED; 3232 if (powerof2(softc->media_blksize)) { 3233 softc->blk_shift = 3234 ffs(softc->media_blksize) - 1; 3235 softc->blk_mask = softc->media_blksize - 1; 3236 } else { 3237 softc->blk_mask = ~0; 3238 softc->blk_shift = 0; 3239 } 3240 } else { 3241 /* 3242 * The SCSI-3 spec allows 0 to mean "unspecified". 3243 * The SCSI-1 spec allows 0 to mean 'infinite'. 3244 * 3245 * Either works here. 3246 */ 3247 if (softc->max_blk == 0) { 3248 softc->max_blk = ~0; 3249 } 3250 softc->blk_shift = 0; 3251 if (softc->blk_gran != 0) { 3252 softc->blk_mask = softc->blk_gran - 1; 3253 } else { 3254 softc->blk_mask = 0; 3255 } 3256 } 3257 3258 if (write_protect) 3259 softc->flags |= SA_FLAG_TAPE_WP; 3260 3261 if (comp_supported) { 3262 if (softc->saved_comp_algorithm == 0) 3263 softc->saved_comp_algorithm = 3264 softc->comp_algorithm; 3265 softc->flags |= SA_FLAG_COMP_SUPP; 3266 if (comp_enabled) 3267 softc->flags |= SA_FLAG_COMP_ENABLED; 3268 } else 3269 softc->flags |= SA_FLAG_COMP_UNSUPP; 3270 3271 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3272 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3273 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3274 0, 0, SF_NO_PRINT); 3275 if (error == 0) { 3276 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3277 } else { 3278 xpt_print(periph->path, 3279 "unable to set buffered mode\n"); 3280 } 3281 error = 0; /* not an error */ 3282 } 3283 3284 3285 if (error == 0) { 3286 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3287 } 3288exit: 3289 if (rblim != NULL) 3290 free(rblim, M_SCSISA); 3291 3292 if (error != 0) { 3293 softc->dsreg = MTIO_DSREG_NIL; 3294 } else { 3295 softc->fileno = softc->blkno = 0; 3296 softc->rep_fileno = softc->rep_blkno = -1; 3297 softc->partition = 0; 3298 softc->dsreg = MTIO_DSREG_REST; 3299 } 3300#ifdef SA_1FM_AT_EOD 3301 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3302 softc->quirks |= SA_QUIRK_1FM; 3303#else 3304 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3305 softc->quirks |= SA_QUIRK_2FM; 3306#endif 3307 } else 3308 xpt_release_ccb(ccb); 3309 3310 /* 3311 * If we return an error, we're not mounted any more, 3312 * so release any device reservation. 3313 */ 3314 if (error != 0) { 3315 (void) sareservereleaseunit(periph, FALSE); 3316 } else { 3317 /* 3318 * Clear I/O residual. 3319 */ 3320 softc->last_io_resid = 0; 3321 softc->last_ctl_resid = 0; 3322 } 3323 return (error); 3324} 3325 3326/* 3327 * How many filemarks do we need to write if we were to terminate the 3328 * tape session right now? Note that this can be a negative number 3329 */ 3330 3331static int 3332samarkswanted(struct cam_periph *periph) 3333{ 3334 int markswanted; 3335 struct sa_softc *softc; 3336 3337 softc = (struct sa_softc *)periph->softc; 3338 markswanted = 0; 3339 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3340 markswanted++; 3341 if (softc->quirks & SA_QUIRK_2FM) 3342 markswanted++; 3343 } 3344 markswanted -= softc->filemarks; 3345 return (markswanted); 3346} 3347 3348static int 3349sacheckeod(struct cam_periph *periph) 3350{ 3351 int error; 3352 int markswanted; 3353 3354 markswanted = samarkswanted(periph); 3355 3356 if (markswanted > 0) { 3357 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3358 } else { 3359 error = 0; 3360 } 3361 return (error); 3362} 3363 3364static int 3365saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3366{ 3367 static const char *toobig = 3368 "%d-byte tape record bigger than supplied buffer\n"; 3369 struct cam_periph *periph; 3370 struct sa_softc *softc; 3371 struct ccb_scsiio *csio; 3372 struct scsi_sense_data *sense; 3373 uint64_t resid = 0; 3374 int64_t info = 0; 3375 cam_status status; 3376 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3377 int sense_len; 3378 uint8_t stream_bits; 3379 3380 periph = xpt_path_periph(ccb->ccb_h.path); 3381 softc = (struct sa_softc *)periph->softc; 3382 csio = &ccb->csio; 3383 sense = &csio->sense_data; 3384 sense_len = csio->sense_len - csio->sense_resid; 3385 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3386 &asc, &ascq, /*show_errors*/ 1); 3387 if (asc != -1 && ascq != -1) 3388 aqvalid = 1; 3389 else 3390 aqvalid = 0; 3391 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3392 stream_valid = 1; 3393 else 3394 stream_valid = 0; 3395 error = 0; 3396 3397 status = csio->ccb_h.status & CAM_STATUS_MASK; 3398 3399 /* 3400 * Calculate/latch up, any residuals... We do this in a funny 2-step 3401 * so we can print stuff here if we have CAM_DEBUG enabled for this 3402 * unit. 3403 */ 3404 if (status == CAM_SCSI_STATUS_ERROR) { 3405 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3406 &info) == 0) { 3407 if ((softc->flags & SA_FLAG_FIXED) != 0) 3408 resid *= softc->media_blksize; 3409 } else { 3410 resid = csio->dxfer_len; 3411 info = resid; 3412 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3413 if (softc->media_blksize) 3414 info /= softc->media_blksize; 3415 } 3416 } 3417 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3418 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3419 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3420 sizeof (struct scsi_sense_data)); 3421 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3422 (int) csio->cdb_len); 3423 softc->last_io_resid = resid; 3424 softc->last_resid_was_io = 1; 3425 } else { 3426 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3427 sizeof (struct scsi_sense_data)); 3428 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3429 (int) csio->cdb_len); 3430 softc->last_ctl_resid = resid; 3431 softc->last_resid_was_io = 0; 3432 } 3433 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3434 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3435 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3436 sense_key, asc, ascq, status, 3437 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3438 csio->dxfer_len)); 3439 } else { 3440 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3441 ("Cam Status 0x%x\n", status)); 3442 } 3443 3444 switch (status) { 3445 case CAM_REQ_CMP: 3446 return (0); 3447 case CAM_SCSI_STATUS_ERROR: 3448 /* 3449 * If a read/write command, we handle it here. 3450 */ 3451 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3452 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3453 break; 3454 } 3455 /* 3456 * If this was just EOM/EOP, Filemark, Setmark, ILI or 3457 * PEW detected on a non read/write command, we assume 3458 * it's not an error and propagate the residual and return. 3459 */ 3460 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5) 3461 || (ascq == 0x07))) 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_NOWAIT | M_ZERO); 4469 /* 4470 * The 80 characters allocated on the stack above 4471 * will handle the vast majority of serial numbers. 4472 * If we run into one that is larger than that, and 4473 * we can't malloc the length without blocking, 4474 * bail out with an out of memory error. 4475 */ 4476 if (tmpstr2 == NULL) { 4477 error = ENOMEM; 4478 goto extget_bailout; 4479 } 4480 } else { 4481 ts2_len = sizeof(tmpstr); 4482 ts2_malloc = 0; 4483 tmpstr2 = tmpstr; 4484 } 4485 4486 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4487 ts2_len); 4488 4489 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4490 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4491 if (ts2_malloc != 0) 4492 free(tmpstr2, M_SCSISA); 4493 } else { 4494 /* 4495 * We return a serial_num element in any case, but it will 4496 * be empty if the device has no serial number. 4497 */ 4498 tmpstr[0] = '\0'; 4499 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4500 (ssize_t)0, "Serial Number"); 4501 } 4502 4503 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4504 "Maximum I/O size allowed by driver and controller"); 4505 4506 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4507 "Maximum I/O size reported by controller"); 4508 4509 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4510 "Maximum block size supported by tape drive and media"); 4511 4512 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4513 "Minimum block size supported by tape drive and media"); 4514 4515 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4516 "Block granularity supported by tape drive and media"); 4517 4518 maxio_tmp = min(softc->max_blk, softc->maxio); 4519 4520 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4521 "Maximum possible I/O size"); 4522 4523 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4524 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4525 4526 /* 4527 * XXX KDM include SIM, bus, target, LUN? 4528 */ 4529 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4530 tmpint = 0; 4531 else 4532 tmpint = 1; 4533 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4534 "Set to 1 if compression is supported, 0 if not"); 4535 if (softc->flags & SA_FLAG_COMP_ENABLED) 4536 tmpint = 1; 4537 else 4538 tmpint = 0; 4539 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4540 "Set to 1 if compression is enabled, 0 if not"); 4541 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4542 compression_algorithm, "Numeric compression algorithm"); 4543 4544 safillprot(softc, &indent, sb); 4545 4546 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4547 media_blocksize, "Block size reported by drive or set by user"); 4548 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4549 calculated_fileno, "Calculated file number, -1 if unknown"); 4550 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4551 calculated_rel_blkno, "Calculated block number relative to file, " 4552 "set to -1 if unknown"); 4553 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4554 reported_fileno, "File number reported by drive, -1 if unknown"); 4555 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4556 reported_blkno, "Block number relative to BOP/BOT reported by " 4557 "drive, -1 if unknown"); 4558 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4559 partition, "Current partition number, 0 is the default"); 4560 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4561 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4562 "not, -1 if unknown"); 4563 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4564 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4565 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4566 "Set to 1 if drive is past programmable early warning, 0 if not, " 4567 "-1 if unknown"); 4568 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4569 residual, "Residual for the last I/O"); 4570 /* 4571 * XXX KDM should we send a string with the current driver 4572 * status already decoded instead of a numeric value? 4573 */ 4574 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4575 "Current state of the driver"); 4576 4577 safilldensitysb(softc, &indent, sb); 4578 4579 SASBENDNODE(sb, indent, mtextget); 4580 4581extget_bailout: 4582 4583 return (error); 4584} 4585 4586static int 4587saparamget(struct sa_softc *softc, struct sbuf *sb) 4588{ 4589 int indent; 4590 4591 indent = 0; 4592 SASBADDNODE(sb, indent, mtparamget); 4593 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4594 "Suppress an error on underlength variable reads"); 4595 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4596 "Return an error to warn that end of tape is approaching"); 4597 safillprot(softc, &indent, sb); 4598 SASBENDNODE(sb, indent, mtparamget); 4599 4600 return (0); 4601} 4602 4603static void 4604saprevent(struct cam_periph *periph, int action) 4605{ 4606 struct sa_softc *softc; 4607 union ccb *ccb; 4608 int error, sf; 4609 4610 softc = (struct sa_softc *)periph->softc; 4611 4612 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4613 return; 4614 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4615 return; 4616 4617 /* 4618 * We can be quiet about illegal requests. 4619 */ 4620 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4621 sf = 0; 4622 } else 4623 sf = SF_QUIET_IR; 4624 4625 ccb = cam_periph_getccb(periph, 1); 4626 4627 /* It is safe to retry this operation */ 4628 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 4629 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4630 4631 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4632 if (error == 0) { 4633 if (action == PR_ALLOW) 4634 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4635 else 4636 softc->flags |= SA_FLAG_TAPE_LOCKED; 4637 } 4638 4639 xpt_release_ccb(ccb); 4640} 4641 4642static int 4643sarewind(struct cam_periph *periph) 4644{ 4645 union ccb *ccb; 4646 struct sa_softc *softc; 4647 int error; 4648 4649 softc = (struct sa_softc *)periph->softc; 4650 4651 ccb = cam_periph_getccb(periph, 1); 4652 4653 /* It is safe to retry this operation */ 4654 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 4655 SSD_FULL_SIZE, REWIND_TIMEOUT); 4656 4657 softc->dsreg = MTIO_DSREG_REW; 4658 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4659 softc->dsreg = MTIO_DSREG_REST; 4660 4661 xpt_release_ccb(ccb); 4662 if (error == 0) { 4663 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4664 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4665 } else { 4666 softc->fileno = softc->blkno = (daddr_t) -1; 4667 softc->partition = (daddr_t) -1; 4668 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4669 } 4670 return (error); 4671} 4672 4673static int 4674saspace(struct cam_periph *periph, int count, scsi_space_code code) 4675{ 4676 union ccb *ccb; 4677 struct sa_softc *softc; 4678 int error; 4679 4680 softc = (struct sa_softc *)periph->softc; 4681 4682 ccb = cam_periph_getccb(periph, 1); 4683 4684 /* This cannot be retried */ 4685 4686 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 4687 SSD_FULL_SIZE, SPACE_TIMEOUT); 4688 4689 /* 4690 * Clear residual because we will be using it. 4691 */ 4692 softc->last_ctl_resid = 0; 4693 4694 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4695 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4696 softc->dsreg = MTIO_DSREG_REST; 4697 4698 xpt_release_ccb(ccb); 4699 4700 /* 4701 * If a spacing operation has failed, we need to invalidate 4702 * this mount. 4703 * 4704 * If the spacing operation was setmarks or to end of recorded data, 4705 * we no longer know our relative position. 4706 * 4707 * If the spacing operations was spacing files in reverse, we 4708 * take account of the residual, but still check against less 4709 * than zero- if we've gone negative, we must have hit BOT. 4710 * 4711 * If the spacing operations was spacing records in reverse and 4712 * we have a residual, we've either hit BOT or hit a filemark. 4713 * In the former case, we know our new record number (0). In 4714 * the latter case, we have absolutely no idea what the real 4715 * record number is- we've stopped between the end of the last 4716 * record in the previous file and the filemark that stopped 4717 * our spacing backwards. 4718 */ 4719 if (error) { 4720 softc->fileno = softc->blkno = (daddr_t) -1; 4721 softc->rep_blkno = softc->partition = (daddr_t) -1; 4722 softc->rep_fileno = (daddr_t) -1; 4723 } else if (code == SS_SETMARKS || code == SS_EOD) { 4724 softc->fileno = softc->blkno = (daddr_t) -1; 4725 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4726 softc->fileno += (count - softc->last_ctl_resid); 4727 if (softc->fileno < 0) /* we must of hit BOT */ 4728 softc->fileno = 0; 4729 softc->blkno = 0; 4730 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4731 softc->blkno += (count - softc->last_ctl_resid); 4732 if (count < 0) { 4733 if (softc->last_ctl_resid || softc->blkno < 0) { 4734 if (softc->fileno == 0) { 4735 softc->blkno = 0; 4736 } else { 4737 softc->blkno = (daddr_t) -1; 4738 } 4739 } 4740 } 4741 } 4742 if (error == 0) 4743 sagetpos(periph); 4744 4745 return (error); 4746} 4747 4748static int 4749sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4750{ 4751 union ccb *ccb; 4752 struct sa_softc *softc; 4753 int error, nwm = 0; 4754 4755 softc = (struct sa_softc *)periph->softc; 4756 if (softc->open_rdonly) 4757 return (EBADF); 4758 4759 ccb = cam_periph_getccb(periph, 1); 4760 /* 4761 * Clear residual because we will be using it. 4762 */ 4763 softc->last_ctl_resid = 0; 4764 4765 softc->dsreg = MTIO_DSREG_FMK; 4766 /* this *must* not be retried */ 4767 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 4768 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4769 softc->dsreg = MTIO_DSREG_REST; 4770 4771 4772 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4773 4774 if (error == 0 && nmarks) { 4775 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4776 nwm = nmarks - softc->last_ctl_resid; 4777 softc->filemarks += nwm; 4778 } 4779 4780 xpt_release_ccb(ccb); 4781 4782 /* 4783 * Update relative positions (if we're doing that). 4784 */ 4785 if (error) { 4786 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4787 } else if (softc->fileno != (daddr_t) -1) { 4788 softc->fileno += nwm; 4789 softc->blkno = 0; 4790 } 4791 4792 /* 4793 * Ask the tape drive for position information. 4794 */ 4795 sagetpos(periph); 4796 4797 /* 4798 * If we got valid position information, since we just wrote a file 4799 * mark, we know we're at the file mark and block 0 after that 4800 * filemark. 4801 */ 4802 if (softc->rep_fileno != (daddr_t) -1) { 4803 softc->fileno = softc->rep_fileno; 4804 softc->blkno = 0; 4805 } 4806 4807 return (error); 4808} 4809 4810static int 4811sagetpos(struct cam_periph *periph) 4812{ 4813 union ccb *ccb; 4814 struct scsi_tape_position_long_data long_pos; 4815 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4816 int error; 4817 4818 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4819 softc->rep_fileno = (daddr_t) -1; 4820 softc->rep_blkno = (daddr_t) -1; 4821 softc->bop = softc->eop = softc->bpew = -1; 4822 return (EOPNOTSUPP); 4823 } 4824 4825 bzero(&long_pos, sizeof(long_pos)); 4826 4827 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4828 scsi_read_position_10(&ccb->csio, 4829 /*retries*/ 1, 4830 /*cbfcnp*/ sadone, 4831 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4832 /*service_action*/ SA_RPOS_LONG_FORM, 4833 /*data_ptr*/ (uint8_t *)&long_pos, 4834 /*length*/ sizeof(long_pos), 4835 /*sense_len*/ SSD_FULL_SIZE, 4836 /*timeout*/ SCSIOP_TIMEOUT); 4837 4838 softc->dsreg = MTIO_DSREG_RBSY; 4839 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4840 softc->device_stats); 4841 softc->dsreg = MTIO_DSREG_REST; 4842 4843 if (error == 0) { 4844 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4845 /* 4846 * If the drive doesn't know what file mark it is 4847 * on, our calculated filemark isn't going to be 4848 * accurate either. 4849 */ 4850 softc->fileno = (daddr_t) -1; 4851 softc->rep_fileno = (daddr_t) -1; 4852 } else { 4853 softc->fileno = softc->rep_fileno = 4854 scsi_8btou64(long_pos.logical_file_num); 4855 } 4856 4857 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4858 softc->partition = (daddr_t) -1; 4859 softc->rep_blkno = (daddr_t) -1; 4860 /* 4861 * If the tape drive doesn't know its block 4862 * position, we can't claim to know it either. 4863 */ 4864 softc->blkno = (daddr_t) -1; 4865 } else { 4866 softc->partition = scsi_4btoul(long_pos.partition); 4867 softc->rep_blkno = 4868 scsi_8btou64(long_pos.logical_object_num); 4869 } 4870 if (long_pos.flags & SA_RPOS_LONG_BOP) 4871 softc->bop = 1; 4872 else 4873 softc->bop = 0; 4874 4875 if (long_pos.flags & SA_RPOS_LONG_EOP) 4876 softc->eop = 1; 4877 else 4878 softc->eop = 0; 4879 4880 if ((long_pos.flags & SA_RPOS_LONG_BPEW) 4881 || (softc->set_pews_status != 0)) { 4882 softc->bpew = 1; 4883 if (softc->set_pews_status > 0) 4884 softc->set_pews_status--; 4885 } else 4886 softc->bpew = 0; 4887 } else if (error == EINVAL) { 4888 /* 4889 * If this drive returned an invalid-request type error, 4890 * then it likely doesn't support the long form report. 4891 */ 4892 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4893 } 4894 4895 if (error != 0) { 4896 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4897 softc->partition = (daddr_t) -1; 4898 softc->bop = softc->eop = softc->bpew = -1; 4899 } 4900 4901 xpt_release_ccb(ccb); 4902 4903 return (error); 4904} 4905 4906static int 4907sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4908{ 4909 struct scsi_tape_position_data loc; 4910 union ccb *ccb; 4911 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4912 int error; 4913 4914 /* 4915 * We try and flush any buffered writes here if we were writing 4916 * and we're trying to get hardware block position. It eats 4917 * up performance substantially, but I'm wary of drive firmware. 4918 * 4919 * I think that *logical* block position is probably okay- 4920 * but hardware block position might have to wait for data 4921 * to hit media to be valid. Caveat Emptor. 4922 */ 4923 4924 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4925 error = sawritefilemarks(periph, 0, 0, 0); 4926 if (error && error != EACCES) 4927 return (error); 4928 } 4929 4930 ccb = cam_periph_getccb(periph, 1); 4931 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 4932 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4933 softc->dsreg = MTIO_DSREG_RBSY; 4934 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4935 softc->dsreg = MTIO_DSREG_REST; 4936 4937 if (error == 0) { 4938 if (loc.flags & SA_RPOS_UNCERTAIN) { 4939 error = EINVAL; /* nothing is certain */ 4940 } else { 4941 *blkptr = scsi_4btoul(loc.firstblk); 4942 } 4943 } 4944 4945 xpt_release_ccb(ccb); 4946 return (error); 4947} 4948 4949static int 4950sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4951{ 4952 union ccb *ccb; 4953 struct sa_softc *softc; 4954 int locate16; 4955 int immed, cp; 4956 int error; 4957 4958 /* 4959 * We used to try and flush any buffered writes here. 4960 * Now we push this onto user applications to either 4961 * flush the pending writes themselves (via a zero count 4962 * WRITE FILEMARKS command) or they can trust their tape 4963 * drive to do this correctly for them. 4964 */ 4965 4966 softc = (struct sa_softc *)periph->softc; 4967 ccb = cam_periph_getccb(periph, 1); 4968 4969 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4970 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4971 4972 /* 4973 * Determine whether we have to use LOCATE or LOCATE16. The hard 4974 * bit is only possible with LOCATE, but the new ioctls do not 4975 * allow setting that bit. So we can't get into the situation of 4976 * having the hard bit set with a block address that is larger than 4977 * 32-bits. 4978 */ 4979 if (hard != 0) 4980 locate16 = 0; 4981 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4982 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4983 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4984 locate16 = 1; 4985 else 4986 locate16 = 0; 4987 4988 if (locate16 != 0) { 4989 scsi_locate_16(&ccb->csio, 4990 /*retries*/ 1, 4991 /*cbfcnp*/ sadone, 4992 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4993 /*immed*/ immed, 4994 /*cp*/ cp, 4995 /*dest_type*/ locate_info->dest_type, 4996 /*bam*/ locate_info->block_address_mode, 4997 /*partition*/ locate_info->partition, 4998 /*logical_id*/ locate_info->logical_id, 4999 /*sense_len*/ SSD_FULL_SIZE, 5000 /*timeout*/ SPACE_TIMEOUT); 5001 } else { 5002 uint32_t blk_pointer; 5003 5004 blk_pointer = locate_info->logical_id; 5005 5006 scsi_locate_10(&ccb->csio, 5007 /*retries*/ 1, 5008 /*cbfcnp*/ sadone, 5009 /*tag_action*/ MSG_SIMPLE_Q_TAG, 5010 /*immed*/ immed, 5011 /*cp*/ cp, 5012 /*hard*/ hard, 5013 /*partition*/ locate_info->partition, 5014 /*block_address*/ locate_info->logical_id, 5015 /*sense_len*/ SSD_FULL_SIZE, 5016 /*timeout*/ SPACE_TIMEOUT); 5017 } 5018 5019 softc->dsreg = MTIO_DSREG_POS; 5020 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5021 softc->dsreg = MTIO_DSREG_REST; 5022 xpt_release_ccb(ccb); 5023 5024 /* 5025 * We assume the calculated file and block numbers are unknown 5026 * unless we have enough information to populate them. 5027 */ 5028 softc->fileno = softc->blkno = (daddr_t) -1; 5029 5030 /* 5031 * If the user requested changing the partition and the request 5032 * succeeded, note the partition. 5033 */ 5034 if ((error == 0) 5035 && (cp != 0)) 5036 softc->partition = locate_info->partition; 5037 else 5038 softc->partition = (daddr_t) -1; 5039 5040 if (error == 0) { 5041 switch (locate_info->dest_type) { 5042 case MT_LOCATE_DEST_FILE: 5043 /* 5044 * This is the only case where we can reliably 5045 * calculate the file and block numbers. 5046 */ 5047 softc->fileno = locate_info->logical_id; 5048 softc->blkno = 0; 5049 break; 5050 case MT_LOCATE_DEST_OBJECT: 5051 case MT_LOCATE_DEST_SET: 5052 case MT_LOCATE_DEST_EOD: 5053 default: 5054 break; 5055 } 5056 } 5057 5058 /* 5059 * Ask the drive for current position information. 5060 */ 5061 sagetpos(periph); 5062 5063 return (error); 5064} 5065 5066static int 5067saretension(struct cam_periph *periph) 5068{ 5069 union ccb *ccb; 5070 struct sa_softc *softc; 5071 int error; 5072 5073 softc = (struct sa_softc *)periph->softc; 5074 5075 ccb = cam_periph_getccb(periph, 1); 5076 5077 /* It is safe to retry this operation */ 5078 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5079 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5080 5081 softc->dsreg = MTIO_DSREG_TEN; 5082 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5083 softc->dsreg = MTIO_DSREG_REST; 5084 5085 xpt_release_ccb(ccb); 5086 if (error == 0) { 5087 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5088 sagetpos(periph); 5089 } else 5090 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5091 return (error); 5092} 5093 5094static int 5095sareservereleaseunit(struct cam_periph *periph, int reserve) 5096{ 5097 union ccb *ccb; 5098 struct sa_softc *softc; 5099 int error; 5100 5101 softc = (struct sa_softc *)periph->softc; 5102 ccb = cam_periph_getccb(periph, 1); 5103 5104 /* It is safe to retry this operation */ 5105 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 5106 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5107 softc->dsreg = MTIO_DSREG_RBSY; 5108 error = cam_periph_runccb(ccb, saerror, 0, 5109 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5110 softc->dsreg = MTIO_DSREG_REST; 5111 xpt_release_ccb(ccb); 5112 5113 /* 5114 * If the error was Illegal Request, then the device doesn't support 5115 * RESERVE/RELEASE. This is not an error. 5116 */ 5117 if (error == EINVAL) { 5118 error = 0; 5119 } 5120 5121 return (error); 5122} 5123 5124static int 5125saloadunload(struct cam_periph *periph, int load) 5126{ 5127 union ccb *ccb; 5128 struct sa_softc *softc; 5129 int error; 5130 5131 softc = (struct sa_softc *)periph->softc; 5132 5133 ccb = cam_periph_getccb(periph, 1); 5134 5135 /* It is safe to retry this operation */ 5136 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5137 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5138 5139 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5140 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5141 softc->dsreg = MTIO_DSREG_REST; 5142 xpt_release_ccb(ccb); 5143 5144 if (error || load == 0) { 5145 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5146 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5147 } else if (error == 0) { 5148 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5149 sagetpos(periph); 5150 } 5151 return (error); 5152} 5153 5154static int 5155saerase(struct cam_periph *periph, int longerase) 5156{ 5157 5158 union ccb *ccb; 5159 struct sa_softc *softc; 5160 int error; 5161 5162 softc = (struct sa_softc *)periph->softc; 5163 if (softc->open_rdonly) 5164 return (EBADF); 5165 5166 ccb = cam_periph_getccb(periph, 1); 5167 5168 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5169 SSD_FULL_SIZE, ERASE_TIMEOUT); 5170 5171 softc->dsreg = MTIO_DSREG_ZER; 5172 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5173 softc->dsreg = MTIO_DSREG_REST; 5174 5175 xpt_release_ccb(ccb); 5176 return (error); 5177} 5178 5179/* 5180 * Fill an sbuf with density data in XML format. This particular macro 5181 * works for multi-byte integer fields. 5182 * 5183 * Note that 1 byte fields aren't supported here. The reason is that the 5184 * compiler does not evaluate the sizeof(), and assumes that any of the 5185 * sizes are possible for a given field. So passing in a multi-byte 5186 * field will result in a warning that the assignment makes an integer 5187 * from a pointer without a cast, if there is an assignment in the 1 byte 5188 * case. 5189 */ 5190#define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5191 len_to_go, cur_offset, desc){ \ 5192 size_t cur_field_len; \ 5193 \ 5194 cur_field_len = sizeof(dens_data->field); \ 5195 if (desc_remain < cur_field_len) { \ 5196 len_to_go -= desc_remain; \ 5197 cur_offset += desc_remain; \ 5198 continue; \ 5199 } \ 5200 len_to_go -= cur_field_len; \ 5201 cur_offset += cur_field_len; \ 5202 desc_remain -= cur_field_len; \ 5203 \ 5204 switch (sizeof(dens_data->field)) { \ 5205 case 1: \ 5206 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5207 "field width for SAFILLDENSFIELD")); \ 5208 break; \ 5209 case 2: \ 5210 SASBADDUINTDESC(sb, indent, \ 5211 scsi_2btoul(dens_data->field), %u, field, desc); \ 5212 break; \ 5213 case 3: \ 5214 SASBADDUINTDESC(sb, indent, \ 5215 scsi_3btoul(dens_data->field), %u, field, desc); \ 5216 break; \ 5217 case 4: \ 5218 SASBADDUINTDESC(sb, indent, \ 5219 scsi_4btoul(dens_data->field), %u, field, desc); \ 5220 break; \ 5221 case 8: \ 5222 SASBADDUINTDESC(sb, indent, \ 5223 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5224 field, desc); \ 5225 break; \ 5226 default: \ 5227 break; \ 5228 } \ 5229}; 5230/* 5231 * Fill an sbuf with density data in XML format. This particular macro 5232 * works for strings. 5233 */ 5234#define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5235 len_to_go, cur_offset, desc){ \ 5236 size_t cur_field_len; \ 5237 char tmpstr[32]; \ 5238 \ 5239 cur_field_len = sizeof(dens_data->field); \ 5240 if (desc_remain < cur_field_len) { \ 5241 len_to_go -= desc_remain; \ 5242 cur_offset += desc_remain; \ 5243 continue; \ 5244 } \ 5245 len_to_go -= cur_field_len; \ 5246 cur_offset += cur_field_len; \ 5247 desc_remain -= cur_field_len; \ 5248 \ 5249 cam_strvis(tmpstr, dens_data->field, \ 5250 sizeof(dens_data->field), sizeof(tmpstr)); \ 5251 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5252 strlen(tmpstr) + 1, desc); \ 5253}; 5254 5255/* 5256 * Fill an sbuf with density data descriptors. 5257 */ 5258static void 5259safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5260 int is_density) 5261{ 5262 struct scsi_density_hdr *hdr; 5263 uint32_t hdr_len; 5264 int len_to_go, cur_offset; 5265 int length_offset; 5266 int num_reports, need_close; 5267 5268 /* 5269 * We need at least the header length. Note that this isn't an 5270 * error, not all tape drives will have every data type. 5271 */ 5272 if (buf_len < sizeof(*hdr)) 5273 goto bailout; 5274 5275 5276 hdr = (struct scsi_density_hdr *)buf; 5277 hdr_len = scsi_2btoul(hdr->length); 5278 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5279 if (is_density) { 5280 length_offset = __offsetof(struct scsi_density_data, 5281 bits_per_mm); 5282 } else { 5283 length_offset = __offsetof(struct scsi_medium_type_data, 5284 num_density_codes); 5285 } 5286 cur_offset = sizeof(*hdr); 5287 5288 num_reports = 0; 5289 need_close = 0; 5290 5291 while (len_to_go > length_offset) { 5292 struct scsi_density_data *dens_data; 5293 struct scsi_medium_type_data *type_data; 5294 int desc_remain; 5295 size_t cur_field_len; 5296 5297 dens_data = NULL; 5298 type_data = NULL; 5299 5300 if (is_density) { 5301 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5302 if (dens_data->byte2 & SDD_DLV) 5303 desc_remain = scsi_2btoul(dens_data->length); 5304 else 5305 desc_remain = SDD_DEFAULT_LENGTH - 5306 length_offset; 5307 } else { 5308 type_data = (struct scsi_medium_type_data *) 5309 &buf[cur_offset]; 5310 desc_remain = scsi_2btoul(type_data->length); 5311 } 5312 5313 len_to_go -= length_offset; 5314 desc_remain = min(desc_remain, len_to_go); 5315 cur_offset += length_offset; 5316 5317 if (need_close != 0) { 5318 SASBENDNODE(sb, *indent, density_entry); 5319 } 5320 5321 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5322 num_reports++; 5323 need_close = 1; 5324 5325 if (is_density) { 5326 SASBADDUINTDESC(sb, *indent, 5327 dens_data->primary_density_code, %u, 5328 primary_density_code, "Primary Density Code"); 5329 SASBADDUINTDESC(sb, *indent, 5330 dens_data->secondary_density_code, %u, 5331 secondary_density_code, "Secondary Density Code"); 5332 SASBADDUINTDESC(sb, *indent, 5333 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5334 "Density Flags"); 5335 5336 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5337 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5338 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5339 desc_remain, len_to_go, cur_offset, "Media width"); 5340 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5341 desc_remain, len_to_go, cur_offset, 5342 "Number of Tracks"); 5343 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5344 desc_remain, len_to_go, cur_offset, "Capacity"); 5345 5346 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5347 desc_remain, len_to_go, cur_offset, 5348 "Assigning Organization"); 5349 5350 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5351 desc_remain, len_to_go, cur_offset, "Density Name"); 5352 5353 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5354 desc_remain, len_to_go, cur_offset, "Description"); 5355 } else { 5356 int i; 5357 5358 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5359 %u, medium_type, "Medium Type"); 5360 5361 cur_field_len = 5362 __offsetof(struct scsi_medium_type_data, 5363 media_width) - 5364 __offsetof(struct scsi_medium_type_data, 5365 num_density_codes); 5366 5367 if (desc_remain < cur_field_len) { 5368 len_to_go -= desc_remain; 5369 cur_offset += desc_remain; 5370 continue; 5371 } 5372 len_to_go -= cur_field_len; 5373 cur_offset += cur_field_len; 5374 desc_remain -= cur_field_len; 5375 5376 SASBADDINTDESC(sb, *indent, 5377 type_data->num_density_codes, %d, 5378 num_density_codes, "Number of Density Codes"); 5379 SASBADDNODE(sb, *indent, density_code_list); 5380 for (i = 0; i < type_data->num_density_codes; 5381 i++) { 5382 SASBADDUINTDESC(sb, *indent, 5383 type_data->primary_density_codes[i], %u, 5384 density_code, "Density Code"); 5385 } 5386 SASBENDNODE(sb, *indent, density_code_list); 5387 5388 SAFILLDENSSB(type_data, sb, *indent, media_width, 5389 desc_remain, len_to_go, cur_offset, 5390 "Media width"); 5391 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5392 desc_remain, len_to_go, cur_offset, 5393 "Medium length"); 5394 5395 /* 5396 * Account for the two reserved bytes. 5397 */ 5398 cur_field_len = sizeof(type_data->reserved2); 5399 if (desc_remain < cur_field_len) { 5400 len_to_go -= desc_remain; 5401 cur_offset += desc_remain; 5402 continue; 5403 } 5404 len_to_go -= cur_field_len; 5405 cur_offset += cur_field_len; 5406 desc_remain -= cur_field_len; 5407 5408 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5409 desc_remain, len_to_go, cur_offset, 5410 "Assigning Organization"); 5411 SAFILLDENSSBSTR(type_data, sb, *indent, 5412 medium_type_name, desc_remain, len_to_go, 5413 cur_offset, "Medium type name"); 5414 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5415 desc_remain, len_to_go, cur_offset, "Description"); 5416 5417 } 5418 } 5419 if (need_close != 0) { 5420 SASBENDNODE(sb, *indent, density_entry); 5421 } 5422 5423bailout: 5424 return; 5425} 5426 5427/* 5428 * Fill an sbuf with density data information 5429 */ 5430static void 5431safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5432{ 5433 int i, is_density; 5434 5435 SASBADDNODE(sb, *indent, mtdensity); 5436 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5437 "Current Medium Density"); 5438 is_density = 0; 5439 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5440 int tmpint; 5441 5442 if (softc->density_info_valid[i] == 0) 5443 continue; 5444 5445 SASBADDNODE(sb, *indent, density_report); 5446 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5447 tmpint = 1; 5448 is_density = 0; 5449 } else { 5450 tmpint = 0; 5451 is_density = 1; 5452 } 5453 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5454 "Medium type report"); 5455 5456 if (softc->density_type_bits[i] & SRDS_MEDIA) 5457 tmpint = 1; 5458 else 5459 tmpint = 0; 5460 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5461 "Media report"); 5462 5463 safilldenstypesb(sb, indent, softc->density_info[i], 5464 softc->density_info_valid[i], is_density); 5465 SASBENDNODE(sb, *indent, density_report); 5466 } 5467 SASBENDNODE(sb, *indent, mtdensity); 5468} 5469 5470#endif /* _KERNEL */ 5471 5472/* 5473 * Read tape block limits command. 5474 */ 5475void 5476scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5477 void (*cbfcnp)(struct cam_periph *, union ccb *), 5478 u_int8_t tag_action, 5479 struct scsi_read_block_limits_data *rlimit_buf, 5480 u_int8_t sense_len, u_int32_t timeout) 5481{ 5482 struct scsi_read_block_limits *scsi_cmd; 5483 5484 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5485 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5486 sizeof(*scsi_cmd), timeout); 5487 5488 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5489 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5490 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5491} 5492 5493void 5494scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5495 void (*cbfcnp)(struct cam_periph *, union ccb *), 5496 u_int8_t tag_action, int readop, int sli, 5497 int fixed, u_int32_t length, u_int8_t *data_ptr, 5498 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5499{ 5500 struct scsi_sa_rw *scsi_cmd; 5501 int read; 5502 5503 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5504 5505 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5506 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5507 scsi_cmd->sli_fixed = 0; 5508 if (sli && read) 5509 scsi_cmd->sli_fixed |= SAR_SLI; 5510 if (fixed) 5511 scsi_cmd->sli_fixed |= SARW_FIXED; 5512 scsi_ulto3b(length, scsi_cmd->length); 5513 scsi_cmd->control = 0; 5514 5515 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5516 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5517 tag_action, data_ptr, dxfer_len, sense_len, 5518 sizeof(*scsi_cmd), timeout); 5519} 5520 5521void 5522scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5523 void (*cbfcnp)(struct cam_periph *, union ccb *), 5524 u_int8_t tag_action, int immediate, int eot, 5525 int reten, int load, u_int8_t sense_len, 5526 u_int32_t timeout) 5527{ 5528 struct scsi_load_unload *scsi_cmd; 5529 5530 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5531 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5532 scsi_cmd->opcode = LOAD_UNLOAD; 5533 if (immediate) 5534 scsi_cmd->immediate = SLU_IMMED; 5535 if (eot) 5536 scsi_cmd->eot_reten_load |= SLU_EOT; 5537 if (reten) 5538 scsi_cmd->eot_reten_load |= SLU_RETEN; 5539 if (load) 5540 scsi_cmd->eot_reten_load |= SLU_LOAD; 5541 5542 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5543 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5544} 5545 5546void 5547scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5548 void (*cbfcnp)(struct cam_periph *, union ccb *), 5549 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5550 u_int32_t timeout) 5551{ 5552 struct scsi_rewind *scsi_cmd; 5553 5554 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5555 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5556 scsi_cmd->opcode = REWIND; 5557 if (immediate) 5558 scsi_cmd->immediate = SREW_IMMED; 5559 5560 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5561 0, sense_len, sizeof(*scsi_cmd), timeout); 5562} 5563 5564void 5565scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5566 void (*cbfcnp)(struct cam_periph *, union ccb *), 5567 u_int8_t tag_action, scsi_space_code code, 5568 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5569{ 5570 struct scsi_space *scsi_cmd; 5571 5572 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5573 scsi_cmd->opcode = SPACE; 5574 scsi_cmd->code = code; 5575 scsi_ulto3b(count, scsi_cmd->count); 5576 scsi_cmd->control = 0; 5577 5578 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5579 0, sense_len, sizeof(*scsi_cmd), timeout); 5580} 5581 5582void 5583scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5584 void (*cbfcnp)(struct cam_periph *, union ccb *), 5585 u_int8_t tag_action, int immediate, int setmark, 5586 u_int32_t num_marks, u_int8_t sense_len, 5587 u_int32_t timeout) 5588{ 5589 struct scsi_write_filemarks *scsi_cmd; 5590 5591 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5592 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5593 scsi_cmd->opcode = WRITE_FILEMARKS; 5594 if (immediate) 5595 scsi_cmd->byte2 |= SWFMRK_IMMED; 5596 if (setmark) 5597 scsi_cmd->byte2 |= SWFMRK_WSMK; 5598 5599 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5600 5601 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5602 0, sense_len, sizeof(*scsi_cmd), timeout); 5603} 5604 5605/* 5606 * The reserve and release unit commands differ only by their opcodes. 5607 */ 5608void 5609scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5610 void (*cbfcnp)(struct cam_periph *, union ccb *), 5611 u_int8_t tag_action, int third_party, 5612 int third_party_id, u_int8_t sense_len, 5613 u_int32_t timeout, int reserve) 5614{ 5615 struct scsi_reserve_release_unit *scsi_cmd; 5616 5617 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5618 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5619 5620 if (reserve) 5621 scsi_cmd->opcode = RESERVE_UNIT; 5622 else 5623 scsi_cmd->opcode = RELEASE_UNIT; 5624 5625 if (third_party) { 5626 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5627 scsi_cmd->lun_thirdparty |= 5628 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5629 } 5630 5631 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5632 0, sense_len, sizeof(*scsi_cmd), timeout); 5633} 5634 5635void 5636scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5637 void (*cbfcnp)(struct cam_periph *, union ccb *), 5638 u_int8_t tag_action, int immediate, int long_erase, 5639 u_int8_t sense_len, u_int32_t timeout) 5640{ 5641 struct scsi_erase *scsi_cmd; 5642 5643 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5644 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5645 5646 scsi_cmd->opcode = ERASE; 5647 5648 if (immediate) 5649 scsi_cmd->lun_imm_long |= SE_IMMED; 5650 5651 if (long_erase) 5652 scsi_cmd->lun_imm_long |= SE_LONG; 5653 5654 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5655 0, sense_len, sizeof(*scsi_cmd), timeout); 5656} 5657 5658/* 5659 * Read Tape Position command. 5660 */ 5661void 5662scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5663 void (*cbfcnp)(struct cam_periph *, union ccb *), 5664 u_int8_t tag_action, int hardsoft, 5665 struct scsi_tape_position_data *sbp, 5666 u_int8_t sense_len, u_int32_t timeout) 5667{ 5668 struct scsi_tape_read_position *scmd; 5669 5670 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5671 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5672 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5673 bzero(scmd, sizeof(*scmd)); 5674 scmd->opcode = READ_POSITION; 5675 scmd->byte1 = hardsoft; 5676} 5677 5678/* 5679 * Read Tape Position command. 5680 */ 5681void 5682scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5683 void (*cbfcnp)(struct cam_periph *, union ccb *), 5684 u_int8_t tag_action, int service_action, 5685 u_int8_t *data_ptr, u_int32_t length, 5686 u_int32_t sense_len, u_int32_t timeout) 5687{ 5688 struct scsi_tape_read_position *scmd; 5689 5690 cam_fill_csio(csio, 5691 retries, 5692 cbfcnp, 5693 /*flags*/CAM_DIR_IN, 5694 tag_action, 5695 /*data_ptr*/data_ptr, 5696 /*dxfer_len*/length, 5697 sense_len, 5698 sizeof(*scmd), 5699 timeout); 5700 5701 5702 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5703 bzero(scmd, sizeof(*scmd)); 5704 scmd->opcode = READ_POSITION; 5705 scmd->byte1 = service_action; 5706 /* 5707 * The length is only currently set (as of SSC4r03) if the extended 5708 * form is specified. The other forms have fixed lengths. 5709 */ 5710 if (service_action == SA_RPOS_EXTENDED_FORM) 5711 scsi_ulto2b(length, scmd->length); 5712} 5713 5714/* 5715 * Set Tape Position command. 5716 */ 5717void 5718scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5719 void (*cbfcnp)(struct cam_periph *, union ccb *), 5720 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5721 u_int8_t sense_len, u_int32_t timeout) 5722{ 5723 struct scsi_tape_locate *scmd; 5724 5725 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5726 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5727 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5728 bzero(scmd, sizeof(*scmd)); 5729 scmd->opcode = LOCATE; 5730 if (hardsoft) 5731 scmd->byte1 |= SA_SPOS_BT; 5732 scsi_ulto4b(blkno, scmd->blkaddr); 5733} 5734 5735/* 5736 * XXX KDM figure out how to make a compatibility function. 5737 */ 5738void 5739scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5740 void (*cbfcnp)(struct cam_periph *, union ccb *), 5741 u_int8_t tag_action, int immed, int cp, int hard, 5742 int64_t partition, u_int32_t block_address, 5743 int sense_len, u_int32_t timeout) 5744{ 5745 struct scsi_tape_locate *scmd; 5746 5747 cam_fill_csio(csio, 5748 retries, 5749 cbfcnp, 5750 CAM_DIR_NONE, 5751 tag_action, 5752 /*data_ptr*/ NULL, 5753 /*dxfer_len*/ 0, 5754 sense_len, 5755 sizeof(*scmd), 5756 timeout); 5757 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5758 bzero(scmd, sizeof(*scmd)); 5759 scmd->opcode = LOCATE; 5760 if (immed) 5761 scmd->byte1 |= SA_SPOS_IMMED; 5762 if (cp) 5763 scmd->byte1 |= SA_SPOS_CP; 5764 if (hard) 5765 scmd->byte1 |= SA_SPOS_BT; 5766 scsi_ulto4b(block_address, scmd->blkaddr); 5767 scmd->partition = partition; 5768} 5769 5770void 5771scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5772 void (*cbfcnp)(struct cam_periph *, union ccb *), 5773 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5774 int bam, int64_t partition, u_int64_t logical_id, 5775 int sense_len, u_int32_t timeout) 5776{ 5777 5778 struct scsi_locate_16 *scsi_cmd; 5779 5780 cam_fill_csio(csio, 5781 retries, 5782 cbfcnp, 5783 /*flags*/CAM_DIR_NONE, 5784 tag_action, 5785 /*data_ptr*/NULL, 5786 /*dxfer_len*/0, 5787 sense_len, 5788 sizeof(*scsi_cmd), 5789 timeout); 5790 5791 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5792 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5793 scsi_cmd->opcode = LOCATE_16; 5794 if (immed) 5795 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5796 if (cp) 5797 scsi_cmd->byte1 |= SA_LC_CP; 5798 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5799 5800 scsi_cmd->byte2 |= bam; 5801 scsi_cmd->partition = partition; 5802 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5803} 5804 5805void 5806scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5807 void (*cbfcnp)(struct cam_periph *, union ccb *), 5808 u_int8_t tag_action, int media, int medium_type, 5809 u_int8_t *data_ptr, u_int32_t length, 5810 u_int32_t sense_len, u_int32_t timeout) 5811{ 5812 struct scsi_report_density_support *scsi_cmd; 5813 5814 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5815 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5816 5817 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5818 if (media != 0) 5819 scsi_cmd->byte1 |= SRDS_MEDIA; 5820 if (medium_type != 0) 5821 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5822 5823 scsi_ulto2b(length, scsi_cmd->length); 5824 5825 cam_fill_csio(csio, 5826 retries, 5827 cbfcnp, 5828 /*flags*/CAM_DIR_IN, 5829 tag_action, 5830 /*data_ptr*/data_ptr, 5831 /*dxfer_len*/length, 5832 sense_len, 5833 sizeof(*scsi_cmd), 5834 timeout); 5835} 5836 5837void 5838scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5839 void (*cbfcnp)(struct cam_periph *, union ccb *), 5840 u_int8_t tag_action, int byte1, u_int32_t proportion, 5841 u_int32_t sense_len, u_int32_t timeout) 5842{ 5843 struct scsi_set_capacity *scsi_cmd; 5844 5845 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5846 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5847 5848 scsi_cmd->opcode = SET_CAPACITY; 5849 5850 scsi_cmd->byte1 = byte1; 5851 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5852 5853 cam_fill_csio(csio, 5854 retries, 5855 cbfcnp, 5856 /*flags*/CAM_DIR_NONE, 5857 tag_action, 5858 /*data_ptr*/NULL, 5859 /*dxfer_len*/0, 5860 sense_len, 5861 sizeof(*scsi_cmd), 5862 timeout); 5863} 5864 5865void 5866scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5867 void (*cbfcnp)(struct cam_periph *, union ccb *), 5868 u_int8_t tag_action, int byte1, int byte2, 5869 u_int8_t *data_ptr, u_int32_t dxfer_len, 5870 u_int32_t sense_len, u_int32_t timeout) 5871{ 5872 struct scsi_format_medium *scsi_cmd; 5873 5874 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5875 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5876 5877 scsi_cmd->opcode = FORMAT_MEDIUM; 5878 5879 scsi_cmd->byte1 = byte1; 5880 scsi_cmd->byte2 = byte2; 5881 5882 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5883 5884 cam_fill_csio(csio, 5885 retries, 5886 cbfcnp, 5887 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5888 tag_action, 5889 /*data_ptr*/ data_ptr, 5890 /*dxfer_len*/ dxfer_len, 5891 sense_len, 5892 sizeof(*scsi_cmd), 5893 timeout); 5894} 5895 5896void 5897scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5898 void (*cbfcnp)(struct cam_periph *, union ccb *), 5899 u_int8_t tag_action, int allow_overwrite, int partition, 5900 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5901{ 5902 struct scsi_allow_overwrite *scsi_cmd; 5903 5904 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5905 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5906 5907 scsi_cmd->opcode = ALLOW_OVERWRITE; 5908 5909 scsi_cmd->allow_overwrite = allow_overwrite; 5910 scsi_cmd->partition = partition; 5911 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5912 5913 cam_fill_csio(csio, 5914 retries, 5915 cbfcnp, 5916 CAM_DIR_NONE, 5917 tag_action, 5918 /*data_ptr*/ NULL, 5919 /*dxfer_len*/ 0, 5920 sense_len, 5921 sizeof(*scsi_cmd), 5922 timeout); 5923} 5924