scsi_sa.c revision 280438
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 280438 2015-03-24 14:36:10Z 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 u_int32_t comp_algorithm; 341 u_int32_t saved_comp_algorithm; 342 u_int32_t media_blksize; 343 u_int32_t last_media_blksize; 344 u_int32_t media_numblks; 345 u_int8_t media_density; 346 u_int8_t speed; 347 u_int8_t scsi_rev; 348 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 349 int buffer_mode; 350 int filemarks; 351 union ccb saved_ccb; 352 int last_resid_was_io; 353 uint8_t density_type_bits[SA_DENSITY_TYPES]; 354 int density_info_valid[SA_DENSITY_TYPES]; 355 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH]; 356 357 struct sa_prot_info prot_info; 358 359 int sili; 360 int eot_warn; 361 362 /* 363 * Current position information. -1 means that the given value is 364 * unknown. fileno and blkno are always calculated. blkno is 365 * relative to the previous file mark. rep_fileno and rep_blkno 366 * are as reported by the drive, if it supports the long form 367 * report for the READ POSITION command. rep_blkno is relative to 368 * the beginning of the partition. 369 * 370 * bop means that the drive is at the beginning of the partition. 371 * eop means that the drive is between early warning and end of 372 * partition, inside the current partition. 373 * bpew means that the position is in a PEWZ (Programmable Early 374 * Warning Zone) 375 */ 376 daddr_t partition; /* Absolute from BOT */ 377 daddr_t fileno; /* Relative to beginning of partition */ 378 daddr_t blkno; /* Relative to last file mark */ 379 daddr_t rep_blkno; /* Relative to beginning of partition */ 380 daddr_t rep_fileno; /* Relative to beginning of partition */ 381 int bop; /* Beginning of Partition */ 382 int eop; /* End of Partition */ 383 int bpew; /* Beyond Programmable Early Warning */ 384 385 /* 386 * Latched Error Info 387 */ 388 struct { 389 struct scsi_sense_data _last_io_sense; 390 u_int64_t _last_io_resid; 391 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 392 struct scsi_sense_data _last_ctl_sense; 393 u_int64_t _last_ctl_resid; 394 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 395#define last_io_sense errinfo._last_io_sense 396#define last_io_resid errinfo._last_io_resid 397#define last_io_cdb errinfo._last_io_cdb 398#define last_ctl_sense errinfo._last_ctl_sense 399#define last_ctl_resid errinfo._last_ctl_resid 400#define last_ctl_cdb errinfo._last_ctl_cdb 401 } errinfo; 402 /* 403 * Misc other flags/state 404 */ 405 u_int32_t 406 : 29, 407 open_rdonly : 1, /* open read-only */ 408 open_pending_mount : 1, /* open pending mount */ 409 ctrl_mode : 1; /* control device open */ 410 411 struct task sysctl_task; 412 struct sysctl_ctx_list sysctl_ctx; 413 struct sysctl_oid *sysctl_tree; 414}; 415 416struct sa_quirk_entry { 417 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 418 sa_quirks quirks; /* specific quirk type */ 419 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 420}; 421 422static struct sa_quirk_entry sa_quirk_table[] = 423{ 424 { 425 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 426 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 427 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 428 }, 429 { 430 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 431 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 432 }, 433 { 434 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 435 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 436 }, 437 { 438 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 439 "Python*", "*"}, SA_QUIRK_NODREAD, 0 440 }, 441 { 442 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 443 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 444 }, 445 { 446 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 447 "VIPER 2525 25462", "-011"}, 448 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 449 }, 450 { 451 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 452 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 453 }, 454#if 0 455 { 456 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 457 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 458 }, 459#endif 460 { 461 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 462 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 463 }, 464 { 465 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 466 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 467 }, 468 { 469 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 470 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 471 }, 472 { 473 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 474 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 475 }, 476 { 477 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 478 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 479 }, 480 { 481 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 482 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 483 }, 484 { /* jreynold@primenet.com */ 485 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 486 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 487 }, 488 { /* mike@sentex.net */ 489 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 490 "STT20000*", "*"}, SA_QUIRK_1FM, 0 491 }, 492 { 493 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 494 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 495 }, 496 { 497 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 498 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 499 }, 500 { 501 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 502 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 503 }, 504 { 505 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 506 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 507 }, 508 { 509 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 510 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 511 }, 512 { 513 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 514 " SLR*", "*"}, SA_QUIRK_1FM, 0 515 }, 516 { 517 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 518 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 519 }, 520 { 521 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 522 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 523 } 524}; 525 526static d_open_t saopen; 527static d_close_t saclose; 528static d_strategy_t sastrategy; 529static d_ioctl_t saioctl; 530static periph_init_t sainit; 531static periph_ctor_t saregister; 532static periph_oninv_t saoninvalidate; 533static periph_dtor_t sacleanup; 534static periph_start_t sastart; 535static void saasync(void *callback_arg, u_int32_t code, 536 struct cam_path *path, void *arg); 537static void sadone(struct cam_periph *periph, 538 union ccb *start_ccb); 539static int saerror(union ccb *ccb, u_int32_t cam_flags, 540 u_int32_t sense_flags); 541static int samarkswanted(struct cam_periph *); 542static int sacheckeod(struct cam_periph *periph); 543static int sagetparams(struct cam_periph *periph, 544 sa_params params_to_get, 545 u_int32_t *blocksize, u_int8_t *density, 546 u_int32_t *numblocks, int *buff_mode, 547 u_int8_t *write_protect, u_int8_t *speed, 548 int *comp_supported, int *comp_enabled, 549 u_int32_t *comp_algorithm, 550 sa_comp_t *comp_page, 551 struct scsi_control_data_prot_subpage 552 *prot_page, int dp_size, 553 int prot_changeable); 554static int sasetprot(struct cam_periph *periph, 555 struct sa_prot_state *new_prot); 556static int sasetparams(struct cam_periph *periph, 557 sa_params params_to_set, 558 u_int32_t blocksize, u_int8_t density, 559 u_int32_t comp_algorithm, 560 u_int32_t sense_flags); 561static int sasetsili(struct cam_periph *periph, 562 struct mtparamset *ps, int num_params); 563static int saseteotwarn(struct cam_periph *periph, 564 struct mtparamset *ps, int num_params); 565static void safillprot(struct sa_softc *softc, int *indent, 566 struct sbuf *sb); 567static void sapopulateprots(struct sa_prot_state *cur_state, 568 struct sa_prot_map *new_table, 569 int table_ents); 570static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table, 571 int table_ents); 572static int sasetprotents(struct cam_periph *periph, 573 struct mtparamset *ps, int num_params); 574static struct sa_param_ent *safindparament(struct mtparamset *ps); 575static int saparamsetlist(struct cam_periph *periph, 576 struct mtsetlist *list, int need_copy); 577static int saextget(struct cdev *dev, struct cam_periph *periph, 578 struct sbuf *sb, struct mtextget *g); 579static int saparamget(struct sa_softc *softc, struct sbuf *sb); 580static void saprevent(struct cam_periph *periph, int action); 581static int sarewind(struct cam_periph *periph); 582static int saspace(struct cam_periph *periph, int count, 583 scsi_space_code code); 584static void sadevgonecb(void *arg); 585static void sasetupdev(struct sa_softc *softc, struct cdev *dev); 586static int samount(struct cam_periph *, int, struct cdev *); 587static int saretension(struct cam_periph *periph); 588static int sareservereleaseunit(struct cam_periph *periph, 589 int reserve); 590static int saloadunload(struct cam_periph *periph, int load); 591static int saerase(struct cam_periph *periph, int longerase); 592static int sawritefilemarks(struct cam_periph *periph, 593 int nmarks, int setmarks, int immed); 594static int sagetpos(struct cam_periph *periph); 595static int sardpos(struct cam_periph *periph, int, u_int32_t *); 596static int sasetpos(struct cam_periph *periph, int, 597 struct mtlocate *); 598static void safilldenstypesb(struct sbuf *sb, int *indent, 599 uint8_t *buf, int buf_len, 600 int is_density); 601static void safilldensitysb(struct sa_softc *softc, int *indent, 602 struct sbuf *sb); 603 604 605#ifndef SA_DEFAULT_IO_SPLIT 606#define SA_DEFAULT_IO_SPLIT 0 607#endif 608 609static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT; 610 611/* 612 * Tunable to allow the user to set a global allow_io_split value. Note 613 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up 614 * is bad behavior, because it hides the true tape block size from the 615 * application. 616 */ 617TUNABLE_INT("kern.cam.sa.allow_io_split", &sa_allow_io_split); 618static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0, 619 "CAM Sequential Access Tape Driver"); 620 621static struct periph_driver sadriver = 622{ 623 sainit, "sa", 624 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 625}; 626 627PERIPHDRIVER_DECLARE(sa, sadriver); 628 629/* For 2.2-stable support */ 630#ifndef D_TAPE 631#define D_TAPE 0 632#endif 633 634 635static struct cdevsw sa_cdevsw = { 636 .d_version = D_VERSION, 637 .d_open = saopen, 638 .d_close = saclose, 639 .d_read = physread, 640 .d_write = physwrite, 641 .d_ioctl = saioctl, 642 .d_strategy = sastrategy, 643 .d_name = "sa", 644 .d_flags = D_TAPE | D_TRACKCLOSE, 645}; 646 647static int 648saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 649{ 650 struct cam_periph *periph; 651 struct sa_softc *softc; 652 int error; 653 654 periph = (struct cam_periph *)dev->si_drv1; 655 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 656 return (ENXIO); 657 } 658 659 cam_periph_lock(periph); 660 661 softc = (struct sa_softc *)periph->softc; 662 663 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 664 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 665 666 if (SA_IS_CTRL(dev)) { 667 softc->ctrl_mode = 1; 668 softc->open_count++; 669 cam_periph_unlock(periph); 670 return (0); 671 } 672 673 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 674 cam_periph_unlock(periph); 675 cam_periph_release(periph); 676 return (error); 677 } 678 679 if (softc->flags & SA_FLAG_OPEN) { 680 error = EBUSY; 681 } else if (softc->flags & SA_FLAG_INVALID) { 682 error = ENXIO; 683 } else { 684 /* 685 * Preserve whether this is a read_only open. 686 */ 687 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 688 689 /* 690 * The function samount ensures media is loaded and ready. 691 * It also does a device RESERVE if the tape isn't yet mounted. 692 * 693 * If the mount fails and this was a non-blocking open, 694 * make this a 'open_pending_mount' action. 695 */ 696 error = samount(periph, flags, dev); 697 if (error && (flags & O_NONBLOCK)) { 698 softc->flags |= SA_FLAG_OPEN; 699 softc->open_pending_mount = 1; 700 softc->open_count++; 701 cam_periph_unhold(periph); 702 cam_periph_unlock(periph); 703 return (0); 704 } 705 } 706 707 if (error) { 708 cam_periph_unhold(periph); 709 cam_periph_unlock(periph); 710 cam_periph_release(periph); 711 return (error); 712 } 713 714 saprevent(periph, PR_PREVENT); 715 softc->flags |= SA_FLAG_OPEN; 716 softc->open_count++; 717 718 cam_periph_unhold(periph); 719 cam_periph_unlock(periph); 720 return (error); 721} 722 723static int 724saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 725{ 726 struct cam_periph *periph; 727 struct sa_softc *softc; 728 int mode, error, writing, tmp, i; 729 int closedbits = SA_FLAG_OPEN; 730 731 mode = SAMODE(dev); 732 periph = (struct cam_periph *)dev->si_drv1; 733 if (periph == NULL) 734 return (ENXIO); 735 736 cam_periph_lock(periph); 737 738 softc = (struct sa_softc *)periph->softc; 739 740 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 741 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 742 743 744 softc->open_rdonly = 0; 745 if (SA_IS_CTRL(dev)) { 746 softc->ctrl_mode = 0; 747 softc->open_count--; 748 cam_periph_unlock(periph); 749 cam_periph_release(periph); 750 return (0); 751 } 752 753 if (softc->open_pending_mount) { 754 softc->flags &= ~SA_FLAG_OPEN; 755 softc->open_pending_mount = 0; 756 softc->open_count--; 757 cam_periph_unlock(periph); 758 cam_periph_release(periph); 759 return (0); 760 } 761 762 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 763 cam_periph_unlock(periph); 764 return (error); 765 } 766 767 /* 768 * Were we writing the tape? 769 */ 770 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 771 772 /* 773 * See whether or not we need to write filemarks. If this 774 * fails, we probably have to assume we've lost tape 775 * position. 776 */ 777 error = sacheckeod(periph); 778 if (error) { 779 xpt_print(periph->path, 780 "failed to write terminating filemark(s)\n"); 781 softc->flags |= SA_FLAG_TAPE_FROZEN; 782 } 783 784 /* 785 * Whatever we end up doing, allow users to eject tapes from here on. 786 */ 787 saprevent(periph, PR_ALLOW); 788 789 /* 790 * Decide how to end... 791 */ 792 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 793 closedbits |= SA_FLAG_TAPE_FROZEN; 794 } else switch (mode) { 795 case SA_MODE_OFFLINE: 796 /* 797 * An 'offline' close is an unconditional release of 798 * frozen && mount conditions, irrespective of whether 799 * these operations succeeded. The reason for this is 800 * to allow at least some kind of programmatic way 801 * around our state getting all fouled up. If somebody 802 * issues an 'offline' command, that will be allowed 803 * to clear state. 804 */ 805 (void) sarewind(periph); 806 (void) saloadunload(periph, FALSE); 807 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 808 break; 809 case SA_MODE_REWIND: 810 /* 811 * If the rewind fails, return an error- if anyone cares, 812 * but not overwriting any previous error. 813 * 814 * We don't clear the notion of mounted here, but we do 815 * clear the notion of frozen if we successfully rewound. 816 */ 817 tmp = sarewind(periph); 818 if (tmp) { 819 if (error != 0) 820 error = tmp; 821 } else { 822 closedbits |= SA_FLAG_TAPE_FROZEN; 823 } 824 break; 825 case SA_MODE_NOREWIND: 826 /* 827 * If we're not rewinding/unloading the tape, find out 828 * whether we need to back up over one of two filemarks 829 * we wrote (if we wrote two filemarks) so that appends 830 * from this point on will be sane. 831 */ 832 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 833 tmp = saspace(periph, -1, SS_FILEMARKS); 834 if (tmp) { 835 xpt_print(periph->path, "unable to backspace " 836 "over one of double filemarks at end of " 837 "tape\n"); 838 xpt_print(periph->path, "it is possible that " 839 "this device needs a SA_QUIRK_1FM quirk set" 840 "for it\n"); 841 softc->flags |= SA_FLAG_TAPE_FROZEN; 842 } 843 } 844 break; 845 default: 846 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 847 /* NOTREACHED */ 848 break; 849 } 850 851 /* 852 * We wish to note here that there are no more filemarks to be written. 853 */ 854 softc->filemarks = 0; 855 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 856 857 /* 858 * And we are no longer open for business. 859 */ 860 softc->flags &= ~closedbits; 861 softc->open_count--; 862 863 /* 864 * Invalidate any density information that depends on having tape 865 * media in the drive. 866 */ 867 for (i = 0; i < SA_DENSITY_TYPES; i++) { 868 if (softc->density_type_bits[i] & SRDS_MEDIA) 869 softc->density_info_valid[i] = 0; 870 } 871 872 /* 873 * Inform users if tape state if frozen.... 874 */ 875 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 876 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 877 "REWIND or MTEOM command to clear this state.\n"); 878 } 879 880 /* release the device if it is no longer mounted */ 881 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 882 sareservereleaseunit(periph, FALSE); 883 884 cam_periph_unhold(periph); 885 cam_periph_unlock(periph); 886 cam_periph_release(periph); 887 888 return (error); 889} 890 891/* 892 * Actually translate the requested transfer into one the physical driver 893 * can understand. The transfer is described by a buf and will include 894 * only one physical transfer. 895 */ 896static void 897sastrategy(struct bio *bp) 898{ 899 struct cam_periph *periph; 900 struct sa_softc *softc; 901 902 bp->bio_resid = bp->bio_bcount; 903 if (SA_IS_CTRL(bp->bio_dev)) { 904 biofinish(bp, NULL, EINVAL); 905 return; 906 } 907 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 908 if (periph == NULL) { 909 biofinish(bp, NULL, ENXIO); 910 return; 911 } 912 cam_periph_lock(periph); 913 914 softc = (struct sa_softc *)periph->softc; 915 916 if (softc->flags & SA_FLAG_INVALID) { 917 cam_periph_unlock(periph); 918 biofinish(bp, NULL, ENXIO); 919 return; 920 } 921 922 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 923 cam_periph_unlock(periph); 924 biofinish(bp, NULL, EPERM); 925 return; 926 } 927 928 /* 929 * This should actually never occur as the write(2) 930 * system call traps attempts to write to a read-only 931 * file descriptor. 932 */ 933 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 934 cam_periph_unlock(periph); 935 biofinish(bp, NULL, EBADF); 936 return; 937 } 938 939 if (softc->open_pending_mount) { 940 int error = samount(periph, 0, bp->bio_dev); 941 if (error) { 942 cam_periph_unlock(periph); 943 biofinish(bp, NULL, ENXIO); 944 return; 945 } 946 saprevent(periph, PR_PREVENT); 947 softc->open_pending_mount = 0; 948 } 949 950 951 /* 952 * If it's a null transfer, return immediately 953 */ 954 if (bp->bio_bcount == 0) { 955 cam_periph_unlock(periph); 956 biodone(bp); 957 return; 958 } 959 960 /* valid request? */ 961 if (softc->flags & SA_FLAG_FIXED) { 962 /* 963 * Fixed block device. The byte count must 964 * be a multiple of our block size. 965 */ 966 if (((softc->blk_mask != ~0) && 967 ((bp->bio_bcount & softc->blk_mask) != 0)) || 968 ((softc->blk_mask == ~0) && 969 ((bp->bio_bcount % softc->min_blk) != 0))) { 970 xpt_print(periph->path, "Invalid request. Fixed block " 971 "device requests must be a multiple of %d bytes\n", 972 softc->min_blk); 973 cam_periph_unlock(periph); 974 biofinish(bp, NULL, EINVAL); 975 return; 976 } 977 } else if ((bp->bio_bcount > softc->max_blk) || 978 (bp->bio_bcount < softc->min_blk) || 979 (bp->bio_bcount & softc->blk_mask) != 0) { 980 981 xpt_print_path(periph->path); 982 printf("Invalid request. Variable block " 983 "device requests must be "); 984 if (softc->blk_mask != 0) { 985 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 986 } 987 printf("between %d and %d bytes\n", softc->min_blk, 988 softc->max_blk); 989 cam_periph_unlock(periph); 990 biofinish(bp, NULL, EINVAL); 991 return; 992 } 993 994 /* 995 * Place it at the end of the queue. 996 */ 997 bioq_insert_tail(&softc->bio_queue, bp); 998 softc->queue_count++; 999#if 0 1000 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1001 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 1002 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 1003 (bp->bio_cmd == BIO_READ)? "read" : "write")); 1004#endif 1005 if (softc->queue_count > 1) { 1006 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1007 ("sastrategy: queue count now %d\n", softc->queue_count)); 1008 } 1009 1010 /* 1011 * Schedule ourselves for performing the work. 1012 */ 1013 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1014 cam_periph_unlock(periph); 1015 1016 return; 1017} 1018 1019static int 1020sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1021{ 1022 uint32_t sili_blocksize; 1023 struct sa_softc *softc; 1024 int error; 1025 1026 error = 0; 1027 softc = (struct sa_softc *)periph->softc; 1028 1029 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1030 snprintf(ps->error_str, sizeof(ps->error_str), 1031 "sili is a signed parameter"); 1032 goto bailout; 1033 } 1034 if ((ps->value.value_signed < 0) 1035 || (ps->value.value_signed > 1)) { 1036 snprintf(ps->error_str, sizeof(ps->error_str), 1037 "invalid sili value %jd", (intmax_t)ps->value.value_signed); 1038 goto bailout_error; 1039 } 1040 /* 1041 * We only set the SILI flag in variable block 1042 * mode. You'll get a check condition in fixed 1043 * block mode if things don't line up in any case. 1044 */ 1045 if (softc->flags & SA_FLAG_FIXED) { 1046 snprintf(ps->error_str, sizeof(ps->error_str), 1047 "can't set sili bit in fixed block mode"); 1048 goto bailout_error; 1049 } 1050 if (softc->sili == ps->value.value_signed) 1051 goto bailout; 1052 1053 if (ps->value.value_signed == 1) 1054 sili_blocksize = 4; 1055 else 1056 sili_blocksize = 0; 1057 1058 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1059 sili_blocksize, 0, 0, SF_QUIET_IR); 1060 if (error != 0) { 1061 snprintf(ps->error_str, sizeof(ps->error_str), 1062 "sasetparams() returned error %d", error); 1063 goto bailout_error; 1064 } 1065 1066 softc->sili = ps->value.value_signed; 1067 1068bailout: 1069 ps->status = MT_PARAM_STATUS_OK; 1070 return (error); 1071 1072bailout_error: 1073 ps->status = MT_PARAM_STATUS_ERROR; 1074 if (error == 0) 1075 error = EINVAL; 1076 1077 return (error); 1078} 1079 1080static int 1081saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1082{ 1083 struct sa_softc *softc; 1084 int error; 1085 1086 error = 0; 1087 softc = (struct sa_softc *)periph->softc; 1088 1089 if (ps->value_type != MT_PARAM_SET_SIGNED) { 1090 snprintf(ps->error_str, sizeof(ps->error_str), 1091 "eot_warn is a signed parameter"); 1092 ps->status = MT_PARAM_STATUS_ERROR; 1093 goto bailout; 1094 } 1095 if ((ps->value.value_signed < 0) 1096 || (ps->value.value_signed > 1)) { 1097 snprintf(ps->error_str, sizeof(ps->error_str), 1098 "invalid eot_warn value %jd\n", 1099 (intmax_t)ps->value.value_signed); 1100 ps->status = MT_PARAM_STATUS_ERROR; 1101 goto bailout; 1102 } 1103 softc->eot_warn = ps->value.value_signed; 1104 ps->status = MT_PARAM_STATUS_OK; 1105bailout: 1106 if (ps->status != MT_PARAM_STATUS_OK) 1107 error = EINVAL; 1108 1109 return (error); 1110} 1111 1112 1113static void 1114safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb) 1115{ 1116 int tmpint; 1117 1118 SASBADDNODE(sb, *indent, protection); 1119 if (softc->flags & SA_FLAG_PROTECT_SUPP) 1120 tmpint = 1; 1121 else 1122 tmpint = 0; 1123 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported, 1124 "Set to 1 if protection information is supported"); 1125 1126 if ((tmpint != 0) 1127 && (softc->prot_info.cur_prot_state.initialized != 0)) { 1128 struct sa_prot_state *prot; 1129 1130 prot = &softc->prot_info.cur_prot_state; 1131 1132 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u, 1133 prot_method, "Current Protection Method"); 1134 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u, 1135 pi_length, "Length of Protection Information"); 1136 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u, 1137 lbp_w, "Check Protection on Writes"); 1138 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u, 1139 lbp_r, "Check and Include Protection on Reads"); 1140 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u, 1141 rbdp, "Transfer Protection Information for RECOVER " 1142 "BUFFERED DATA command"); 1143 } 1144 SASBENDNODE(sb, *indent, protection); 1145} 1146 1147static void 1148sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table, 1149 int table_ents) 1150{ 1151 int i; 1152 1153 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table), 1154 sizeof(sa_prot_table))); 1155 1156 table_ents = min(table_ents, SA_NUM_PROT_ENTS); 1157 1158 for (i = 0; i < table_ents; i++) 1159 new_table[i].value = (uint32_t *)((uint8_t *)cur_state + 1160 new_table[i].offset); 1161 1162 return; 1163} 1164 1165static struct sa_prot_map * 1166safindprotent(char *name, struct sa_prot_map *table, int table_ents) 1167{ 1168 char *prot_name = "protection."; 1169 int i, prot_len; 1170 1171 prot_len = strlen(prot_name); 1172 1173 /* 1174 * This shouldn't happen, but we check just in case. 1175 */ 1176 if (strncmp(name, prot_name, prot_len) != 0) 1177 goto bailout; 1178 1179 for (i = 0; i < table_ents; i++) { 1180 if (strcmp(&name[prot_len], table[i].name) != 0) 1181 continue; 1182 return (&table[i]); 1183 } 1184bailout: 1185 return (NULL); 1186} 1187 1188static int 1189sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params) 1190{ 1191 struct sa_softc *softc; 1192 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS]; 1193 struct sa_prot_state new_state; 1194 int error; 1195 int i; 1196 1197 softc = (struct sa_softc *)periph->softc; 1198 error = 0; 1199 1200 /* 1201 * Make sure that this tape drive supports protection information. 1202 * Otherwise we can't set anything. 1203 */ 1204 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) { 1205 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1206 "Protection information is not supported for this device"); 1207 ps[0].status = MT_PARAM_STATUS_ERROR; 1208 goto bailout; 1209 } 1210 1211 /* 1212 * We can't operate with physio(9) splitting enabled, because there 1213 * is no way to insure (especially in variable block mode) that 1214 * what the user writes (with a checksum block at the end) will 1215 * make it into the sa(4) driver intact. 1216 */ 1217 if ((softc->si_flags & SI_NOSPLIT) == 0) { 1218 snprintf(ps[0].error_str, sizeof(ps[0].error_str), 1219 "Protection information cannot be enabled with I/O " 1220 "splitting"); 1221 ps[0].status = MT_PARAM_STATUS_ERROR; 1222 goto bailout; 1223 } 1224 1225 /* 1226 * Take the current cached protection state and use that as the 1227 * basis for our new entries. 1228 */ 1229 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state)); 1230 1231 /* 1232 * Populate the table mapping property names to pointers into the 1233 * state structure. 1234 */ 1235 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS); 1236 1237 /* 1238 * For each parameter the user passed in, make sure the name, type 1239 * and value are valid. 1240 */ 1241 for (i = 0; i < num_params; i++) { 1242 struct sa_prot_map *ent; 1243 1244 ent = safindprotent(ps[i].value_name, prot_ents, 1245 SA_NUM_PROT_ENTS); 1246 if (ent == NULL) { 1247 ps[i].status = MT_PARAM_STATUS_ERROR; 1248 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1249 "Invalid protection entry name %s", 1250 ps[i].value_name); 1251 error = EINVAL; 1252 goto bailout; 1253 } 1254 if (ent->param_type != ps[i].value_type) { 1255 ps[i].status = MT_PARAM_STATUS_ERROR; 1256 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1257 "Supplied type %d does not match actual type %d", 1258 ps[i].value_type, ent->param_type); 1259 error = EINVAL; 1260 goto bailout; 1261 } 1262 if ((ps[i].value.value_unsigned < ent->min_val) 1263 || (ps[i].value.value_unsigned > ent->max_val)) { 1264 ps[i].status = MT_PARAM_STATUS_ERROR; 1265 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1266 "Value %ju is outside valid range %u - %u", 1267 (uintmax_t)ps[i].value.value_unsigned, ent->min_val, 1268 ent->max_val); 1269 error = EINVAL; 1270 goto bailout; 1271 } 1272 *(ent->value) = ps[i].value.value_unsigned; 1273 } 1274 1275 /* 1276 * Actually send the protection settings to the drive. 1277 */ 1278 error = sasetprot(periph, &new_state); 1279 if (error != 0) { 1280 for (i = 0; i < num_params; i++) { 1281 ps[i].status = MT_PARAM_STATUS_ERROR; 1282 snprintf(ps[i].error_str, sizeof(ps[i].error_str), 1283 "Unable to set parameter, see dmesg(8)"); 1284 } 1285 goto bailout; 1286 } 1287 1288 /* 1289 * Let the user know that his settings were stored successfully. 1290 */ 1291 for (i = 0; i < num_params; i++) 1292 ps[i].status = MT_PARAM_STATUS_OK; 1293 1294bailout: 1295 return (error); 1296} 1297/* 1298 * Entry handlers generally only handle a single entry. Node handlers will 1299 * handle a contiguous range of parameters to set in a single call. 1300 */ 1301typedef enum { 1302 SA_PARAM_TYPE_ENTRY, 1303 SA_PARAM_TYPE_NODE 1304} sa_param_type; 1305 1306struct sa_param_ent { 1307 char *name; 1308 sa_param_type param_type; 1309 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps, 1310 int num_params); 1311} sa_param_table[] = { 1312 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili }, 1313 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn }, 1314 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents } 1315}; 1316 1317static struct sa_param_ent * 1318safindparament(struct mtparamset *ps) 1319{ 1320 unsigned int i; 1321 1322 for (i = 0; i < sizeof(sa_param_table) /sizeof(sa_param_table[0]); i++){ 1323 /* 1324 * For entries, we compare all of the characters. For 1325 * nodes, we only compare the first N characters. The node 1326 * handler will decode the rest. 1327 */ 1328 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) { 1329 if (strcmp(ps->value_name, sa_param_table[i].name) != 0) 1330 continue; 1331 } else { 1332 if (strncmp(ps->value_name, sa_param_table[i].name, 1333 strlen(sa_param_table[i].name)) != 0) 1334 continue; 1335 } 1336 return (&sa_param_table[i]); 1337 } 1338 1339 return (NULL); 1340} 1341 1342/* 1343 * Go through a list of parameters, coalescing contiguous parameters with 1344 * the same parent node into a single call to a set_func. 1345 */ 1346static int 1347saparamsetlist(struct cam_periph *periph, struct mtsetlist *list, 1348 int need_copy) 1349{ 1350 int i, contig_ents; 1351 int error; 1352 struct mtparamset *params, *first; 1353 struct sa_param_ent *first_ent; 1354 1355 error = 0; 1356 params = NULL; 1357 1358 if (list->num_params == 0) 1359 /* Nothing to do */ 1360 goto bailout; 1361 1362 /* 1363 * Verify that the user has the correct structure size. 1364 */ 1365 if ((list->num_params * sizeof(struct mtparamset)) != 1366 list->param_len) { 1367 xpt_print(periph->path, "%s: length of params %d != " 1368 "sizeof(struct mtparamset) %zd * num_params %d\n", 1369 __func__, list->param_len, sizeof(struct mtparamset), 1370 list->num_params); 1371 error = EINVAL; 1372 goto bailout; 1373 } 1374 1375 if (need_copy != 0) { 1376 /* 1377 * XXX KDM will dropping the lock cause an issue here? 1378 */ 1379 cam_periph_unlock(periph); 1380 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO); 1381 error = copyin(list->params, params, list->param_len); 1382 cam_periph_lock(periph); 1383 1384 if (error != 0) 1385 goto bailout; 1386 } else { 1387 params = list->params; 1388 } 1389 1390 contig_ents = 0; 1391 first = NULL; 1392 first_ent = NULL; 1393 for (i = 0; i < list->num_params; i++) { 1394 struct sa_param_ent *ent; 1395 1396 ent = safindparament(¶ms[i]); 1397 if (ent == NULL) { 1398 snprintf(params[i].error_str, 1399 sizeof(params[i].error_str), 1400 "%s: cannot find parameter %s", __func__, 1401 params[i].value_name); 1402 params[i].status = MT_PARAM_STATUS_ERROR; 1403 break; 1404 } 1405 1406 if (first != NULL) { 1407 if (first_ent == ent) { 1408 /* 1409 * We're still in a contiguous list of 1410 * parameters that can be handled by one 1411 * node handler. 1412 */ 1413 contig_ents++; 1414 continue; 1415 } else { 1416 error = first_ent->set_func(periph, first, 1417 contig_ents); 1418 first = NULL; 1419 first_ent = NULL; 1420 contig_ents = 0; 1421 if (error != 0) { 1422 error = 0; 1423 break; 1424 } 1425 } 1426 } 1427 if (ent->param_type == SA_PARAM_TYPE_NODE) { 1428 first = ¶ms[i]; 1429 first_ent = ent; 1430 contig_ents = 1; 1431 } else { 1432 error = ent->set_func(periph, ¶ms[i], 1); 1433 if (error != 0) { 1434 error = 0; 1435 break; 1436 } 1437 } 1438 } 1439 if (first != NULL) 1440 first_ent->set_func(periph, first, contig_ents); 1441 1442bailout: 1443 if (need_copy != 0) { 1444 if (error != EFAULT) { 1445 cam_periph_unlock(periph); 1446 copyout(params, list->params, list->param_len); 1447 cam_periph_lock(periph); 1448 } 1449 free(params, M_SCSISA); 1450 } 1451 return (error); 1452} 1453 1454static int 1455sagetparams_common(struct cdev *dev, struct cam_periph *periph) 1456{ 1457 struct sa_softc *softc; 1458 u_int8_t write_protect; 1459 int comp_enabled, comp_supported, error; 1460 1461 softc = (struct sa_softc *)periph->softc; 1462 1463 if (softc->open_pending_mount) 1464 return (0); 1465 1466 /* The control device may issue getparams() if there are no opens. */ 1467 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0) 1468 return (0); 1469 1470 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize, 1471 &softc->media_density, &softc->media_numblks, &softc->buffer_mode, 1472 &write_protect, &softc->speed, &comp_supported, &comp_enabled, 1473 &softc->comp_algorithm, NULL, NULL, 0, 0); 1474 if (error) 1475 return (error); 1476 if (write_protect) 1477 softc->flags |= SA_FLAG_TAPE_WP; 1478 else 1479 softc->flags &= ~SA_FLAG_TAPE_WP; 1480 softc->flags &= ~SA_FLAG_COMPRESSION; 1481 if (comp_supported) { 1482 if (softc->saved_comp_algorithm == 0) 1483 softc->saved_comp_algorithm = 1484 softc->comp_algorithm; 1485 softc->flags |= SA_FLAG_COMP_SUPP; 1486 if (comp_enabled) 1487 softc->flags |= SA_FLAG_COMP_ENABLED; 1488 } else 1489 softc->flags |= SA_FLAG_COMP_UNSUPP; 1490 1491 return (0); 1492} 1493 1494#define PENDING_MOUNT_CHECK(softc, periph, dev) \ 1495 if (softc->open_pending_mount) { \ 1496 error = samount(periph, 0, dev); \ 1497 if (error) { \ 1498 break; \ 1499 } \ 1500 saprevent(periph, PR_PREVENT); \ 1501 softc->open_pending_mount = 0; \ 1502 } 1503 1504static int 1505saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 1506{ 1507 struct cam_periph *periph; 1508 struct sa_softc *softc; 1509 scsi_space_code spaceop; 1510 int didlockperiph = 0; 1511 int mode; 1512 int error = 0; 1513 1514 mode = SAMODE(dev); 1515 error = 0; /* shut up gcc */ 1516 spaceop = 0; /* shut up gcc */ 1517 1518 periph = (struct cam_periph *)dev->si_drv1; 1519 if (periph == NULL) 1520 return (ENXIO); 1521 1522 cam_periph_lock(periph); 1523 softc = (struct sa_softc *)periph->softc; 1524 1525 /* 1526 * Check for control mode accesses. We allow MTIOCGET and 1527 * MTIOCERRSTAT (but need to be the only one open in order 1528 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 1529 * and MTCOMP (but need to be the only one accessing this 1530 * device to run those). 1531 */ 1532 1533 if (SA_IS_CTRL(dev)) { 1534 switch (cmd) { 1535 case MTIOCGETEOTMODEL: 1536 case MTIOCGET: 1537 case MTIOCEXTGET: 1538 case MTIOCPARAMGET: 1539 case MTIOCRBLIM: 1540 break; 1541 case MTIOCERRSTAT: 1542 /* 1543 * If the periph isn't already locked, lock it 1544 * so our MTIOCERRSTAT can reset latched error stats. 1545 * 1546 * If the periph is already locked, skip it because 1547 * we're just getting status and it'll be up to the 1548 * other thread that has this device open to do 1549 * an MTIOCERRSTAT that would clear latched status. 1550 */ 1551 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 1552 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1553 if (error != 0) { 1554 cam_periph_unlock(periph); 1555 return (error); 1556 } 1557 didlockperiph = 1; 1558 } 1559 break; 1560 1561 case MTIOCTOP: 1562 { 1563 struct mtop *mt = (struct mtop *) arg; 1564 1565 /* 1566 * Check to make sure it's an OP we can perform 1567 * with no media inserted. 1568 */ 1569 switch (mt->mt_op) { 1570 case MTSETBSIZ: 1571 case MTSETDNSTY: 1572 case MTCOMP: 1573 mt = NULL; 1574 /* FALLTHROUGH */ 1575 default: 1576 break; 1577 } 1578 if (mt != NULL) { 1579 break; 1580 } 1581 /* FALLTHROUGH */ 1582 } 1583 case MTIOCSETEOTMODEL: 1584 /* 1585 * We need to acquire the peripheral here rather 1586 * than at open time because we are sharing writable 1587 * access to data structures. 1588 */ 1589 error = cam_periph_hold(periph, PRIBIO|PCATCH); 1590 if (error != 0) { 1591 cam_periph_unlock(periph); 1592 return (error); 1593 } 1594 didlockperiph = 1; 1595 break; 1596 1597 default: 1598 cam_periph_unlock(periph); 1599 return (EINVAL); 1600 } 1601 } 1602 1603 /* 1604 * Find the device that the user is talking about 1605 */ 1606 switch (cmd) { 1607 case MTIOCGET: 1608 { 1609 struct mtget *g = (struct mtget *)arg; 1610 1611 error = sagetparams_common(dev, periph); 1612 if (error) 1613 break; 1614 bzero(g, sizeof(struct mtget)); 1615 g->mt_type = MT_ISAR; 1616 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 1617 g->mt_comp = MT_COMP_UNSUPP; 1618 g->mt_comp0 = MT_COMP_UNSUPP; 1619 g->mt_comp1 = MT_COMP_UNSUPP; 1620 g->mt_comp2 = MT_COMP_UNSUPP; 1621 g->mt_comp3 = MT_COMP_UNSUPP; 1622 } else { 1623 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 1624 g->mt_comp = MT_COMP_DISABLED; 1625 } else { 1626 g->mt_comp = softc->comp_algorithm; 1627 } 1628 g->mt_comp0 = softc->comp_algorithm; 1629 g->mt_comp1 = softc->comp_algorithm; 1630 g->mt_comp2 = softc->comp_algorithm; 1631 g->mt_comp3 = softc->comp_algorithm; 1632 } 1633 g->mt_density = softc->media_density; 1634 g->mt_density0 = softc->media_density; 1635 g->mt_density1 = softc->media_density; 1636 g->mt_density2 = softc->media_density; 1637 g->mt_density3 = softc->media_density; 1638 g->mt_blksiz = softc->media_blksize; 1639 g->mt_blksiz0 = softc->media_blksize; 1640 g->mt_blksiz1 = softc->media_blksize; 1641 g->mt_blksiz2 = softc->media_blksize; 1642 g->mt_blksiz3 = softc->media_blksize; 1643 g->mt_fileno = softc->fileno; 1644 g->mt_blkno = softc->blkno; 1645 g->mt_dsreg = (short) softc->dsreg; 1646 /* 1647 * Yes, we know that this is likely to overflow 1648 */ 1649 if (softc->last_resid_was_io) { 1650 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 1651 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1652 softc->last_io_resid = 0; 1653 } 1654 } 1655 } else { 1656 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1657 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1658 softc->last_ctl_resid = 0; 1659 } 1660 } 1661 } 1662 error = 0; 1663 break; 1664 } 1665 case MTIOCEXTGET: 1666 case MTIOCPARAMGET: 1667 { 1668 struct mtextget *g = (struct mtextget *)arg; 1669 char *tmpstr2; 1670 struct sbuf *sb; 1671 1672 /* 1673 * Report drive status using an XML format. 1674 */ 1675 1676 /* 1677 * XXX KDM will dropping the lock cause any problems here? 1678 */ 1679 cam_periph_unlock(periph); 1680 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN); 1681 if (sb == NULL) { 1682 g->status = MT_EXT_GET_ERROR; 1683 snprintf(g->error_str, sizeof(g->error_str), 1684 "Unable to allocate %d bytes for status info", 1685 g->alloc_len); 1686 cam_periph_lock(periph); 1687 goto extget_bailout; 1688 } 1689 cam_periph_lock(periph); 1690 1691 if (cmd == MTIOCEXTGET) 1692 error = saextget(dev, periph, sb, g); 1693 else 1694 error = saparamget(softc, sb); 1695 1696 if (error != 0) 1697 goto extget_bailout; 1698 1699 error = sbuf_finish(sb); 1700 if (error == ENOMEM) { 1701 g->status = MT_EXT_GET_NEED_MORE_SPACE; 1702 error = 0; 1703 } else if (error != 0) { 1704 g->status = MT_EXT_GET_ERROR; 1705 snprintf(g->error_str, sizeof(g->error_str), 1706 "Error %d returned from sbuf_finish()", error); 1707 } else 1708 g->status = MT_EXT_GET_OK; 1709 1710 error = 0; 1711 tmpstr2 = sbuf_data(sb); 1712 g->fill_len = strlen(tmpstr2) + 1; 1713 cam_periph_unlock(periph); 1714 1715 error = copyout(tmpstr2, g->status_xml, g->fill_len); 1716 1717 cam_periph_lock(periph); 1718 1719extget_bailout: 1720 sbuf_delete(sb); 1721 break; 1722 } 1723 case MTIOCPARAMSET: 1724 { 1725 struct mtsetlist list; 1726 struct mtparamset *ps = (struct mtparamset *)arg; 1727 1728 bzero(&list, sizeof(list)); 1729 list.num_params = 1; 1730 list.param_len = sizeof(*ps); 1731 list.params = ps; 1732 1733 error = saparamsetlist(periph, &list, /*need_copy*/ 0); 1734 break; 1735 } 1736 case MTIOCSETLIST: 1737 { 1738 struct mtsetlist *list = (struct mtsetlist *)arg; 1739 1740 error = saparamsetlist(periph, list, /*need_copy*/ 1); 1741 break; 1742 } 1743 case MTIOCERRSTAT: 1744 { 1745 struct scsi_tape_errors *sep = 1746 &((union mterrstat *)arg)->scsi_errstat; 1747 1748 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1749 ("saioctl: MTIOCERRSTAT\n")); 1750 1751 bzero(sep, sizeof(*sep)); 1752 sep->io_resid = softc->last_io_resid; 1753 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1754 sizeof (sep->io_sense)); 1755 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1756 sizeof (sep->io_cdb)); 1757 sep->ctl_resid = softc->last_ctl_resid; 1758 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1759 sizeof (sep->ctl_sense)); 1760 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1761 sizeof (sep->ctl_cdb)); 1762 1763 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) || 1764 didlockperiph) 1765 bzero((caddr_t) &softc->errinfo, 1766 sizeof (softc->errinfo)); 1767 error = 0; 1768 break; 1769 } 1770 case MTIOCTOP: 1771 { 1772 struct mtop *mt; 1773 int count; 1774 1775 PENDING_MOUNT_CHECK(softc, periph, dev); 1776 1777 mt = (struct mtop *)arg; 1778 1779 1780 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1781 ("saioctl: op=0x%x count=0x%x\n", 1782 mt->mt_op, mt->mt_count)); 1783 1784 count = mt->mt_count; 1785 switch (mt->mt_op) { 1786 case MTWEOF: /* write an end-of-file marker */ 1787 /* 1788 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1789 * flag because by keeping track of filemarks 1790 * we have last written we know whether or not 1791 * we need to write more when we close the device. 1792 */ 1793 error = sawritefilemarks(periph, count, FALSE, FALSE); 1794 break; 1795 case MTWEOFI: 1796 /* write an end-of-file marker without waiting */ 1797 error = sawritefilemarks(periph, count, FALSE, TRUE); 1798 break; 1799 case MTWSS: /* write a setmark */ 1800 error = sawritefilemarks(periph, count, TRUE, FALSE); 1801 break; 1802 case MTBSR: /* backward space record */ 1803 case MTFSR: /* forward space record */ 1804 case MTBSF: /* backward space file */ 1805 case MTFSF: /* forward space file */ 1806 case MTBSS: /* backward space setmark */ 1807 case MTFSS: /* forward space setmark */ 1808 case MTEOD: /* space to end of recorded medium */ 1809 { 1810 int nmarks; 1811 1812 spaceop = SS_FILEMARKS; 1813 nmarks = softc->filemarks; 1814 error = sacheckeod(periph); 1815 if (error) { 1816 xpt_print(periph->path, 1817 "EOD check prior to spacing failed\n"); 1818 softc->flags |= SA_FLAG_EIO_PENDING; 1819 break; 1820 } 1821 nmarks -= softc->filemarks; 1822 switch(mt->mt_op) { 1823 case MTBSR: 1824 count = -count; 1825 /* FALLTHROUGH */ 1826 case MTFSR: 1827 spaceop = SS_BLOCKS; 1828 break; 1829 case MTBSF: 1830 count = -count; 1831 /* FALLTHROUGH */ 1832 case MTFSF: 1833 break; 1834 case MTBSS: 1835 count = -count; 1836 /* FALLTHROUGH */ 1837 case MTFSS: 1838 spaceop = SS_SETMARKS; 1839 break; 1840 case MTEOD: 1841 spaceop = SS_EOD; 1842 count = 0; 1843 nmarks = 0; 1844 break; 1845 default: 1846 error = EINVAL; 1847 break; 1848 } 1849 if (error) 1850 break; 1851 1852 nmarks = softc->filemarks; 1853 /* 1854 * XXX: Why are we checking again? 1855 */ 1856 error = sacheckeod(periph); 1857 if (error) 1858 break; 1859 nmarks -= softc->filemarks; 1860 error = saspace(periph, count - nmarks, spaceop); 1861 /* 1862 * At this point, clear that we've written the tape 1863 * and that we've written any filemarks. We really 1864 * don't know what the applications wishes to do next- 1865 * the sacheckeod's will make sure we terminated the 1866 * tape correctly if we'd been writing, but the next 1867 * action the user application takes will set again 1868 * whether we need to write filemarks. 1869 */ 1870 softc->flags &= 1871 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1872 softc->filemarks = 0; 1873 break; 1874 } 1875 case MTREW: /* rewind */ 1876 PENDING_MOUNT_CHECK(softc, periph, dev); 1877 (void) sacheckeod(periph); 1878 error = sarewind(periph); 1879 /* see above */ 1880 softc->flags &= 1881 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1882 softc->flags &= ~SA_FLAG_ERR_PENDING; 1883 softc->filemarks = 0; 1884 break; 1885 case MTERASE: /* erase */ 1886 PENDING_MOUNT_CHECK(softc, periph, dev); 1887 error = saerase(periph, count); 1888 softc->flags &= 1889 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1890 softc->flags &= ~SA_FLAG_ERR_PENDING; 1891 break; 1892 case MTRETENS: /* re-tension tape */ 1893 PENDING_MOUNT_CHECK(softc, periph, dev); 1894 error = saretension(periph); 1895 softc->flags &= 1896 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1897 softc->flags &= ~SA_FLAG_ERR_PENDING; 1898 break; 1899 case MTOFFL: /* rewind and put the drive offline */ 1900 1901 PENDING_MOUNT_CHECK(softc, periph, dev); 1902 1903 (void) sacheckeod(periph); 1904 /* see above */ 1905 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1906 softc->filemarks = 0; 1907 1908 error = sarewind(periph); 1909 /* clear the frozen flag anyway */ 1910 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1911 1912 /* 1913 * Be sure to allow media removal before ejecting. 1914 */ 1915 1916 saprevent(periph, PR_ALLOW); 1917 if (error == 0) { 1918 error = saloadunload(periph, FALSE); 1919 if (error == 0) { 1920 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1921 } 1922 } 1923 break; 1924 1925 case MTLOAD: 1926 error = saloadunload(periph, TRUE); 1927 break; 1928 case MTNOP: /* no operation, sets status only */ 1929 case MTCACHE: /* enable controller cache */ 1930 case MTNOCACHE: /* disable controller cache */ 1931 error = 0; 1932 break; 1933 1934 case MTSETBSIZ: /* Set block size for device */ 1935 1936 PENDING_MOUNT_CHECK(softc, periph, dev); 1937 1938 if ((softc->sili != 0) 1939 && (count != 0)) { 1940 xpt_print(periph->path, "Can't enter fixed " 1941 "block mode with SILI enabled\n"); 1942 error = EINVAL; 1943 break; 1944 } 1945 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1946 0, 0, 0); 1947 if (error == 0) { 1948 softc->last_media_blksize = 1949 softc->media_blksize; 1950 softc->media_blksize = count; 1951 if (count) { 1952 softc->flags |= SA_FLAG_FIXED; 1953 if (powerof2(count)) { 1954 softc->blk_shift = 1955 ffs(count) - 1; 1956 softc->blk_mask = count - 1; 1957 } else { 1958 softc->blk_mask = ~0; 1959 softc->blk_shift = 0; 1960 } 1961 /* 1962 * Make the user's desire 'persistent'. 1963 */ 1964 softc->quirks &= ~SA_QUIRK_VARIABLE; 1965 softc->quirks |= SA_QUIRK_FIXED; 1966 } else { 1967 softc->flags &= ~SA_FLAG_FIXED; 1968 if (softc->max_blk == 0) { 1969 softc->max_blk = ~0; 1970 } 1971 softc->blk_shift = 0; 1972 if (softc->blk_gran != 0) { 1973 softc->blk_mask = 1974 softc->blk_gran - 1; 1975 } else { 1976 softc->blk_mask = 0; 1977 } 1978 /* 1979 * Make the user's desire 'persistent'. 1980 */ 1981 softc->quirks |= SA_QUIRK_VARIABLE; 1982 softc->quirks &= ~SA_QUIRK_FIXED; 1983 } 1984 } 1985 break; 1986 case MTSETDNSTY: /* Set density for device and mode */ 1987 PENDING_MOUNT_CHECK(softc, periph, dev); 1988 1989 if (count > UCHAR_MAX) { 1990 error = EINVAL; 1991 break; 1992 } else { 1993 error = sasetparams(periph, SA_PARAM_DENSITY, 1994 0, count, 0, 0); 1995 } 1996 break; 1997 case MTCOMP: /* enable compression */ 1998 PENDING_MOUNT_CHECK(softc, periph, dev); 1999 /* 2000 * Some devices don't support compression, and 2001 * don't like it if you ask them for the 2002 * compression page. 2003 */ 2004 if ((softc->quirks & SA_QUIRK_NOCOMP) || 2005 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 2006 error = ENODEV; 2007 break; 2008 } 2009 error = sasetparams(periph, SA_PARAM_COMPRESSION, 2010 0, 0, count, SF_NO_PRINT); 2011 break; 2012 default: 2013 error = EINVAL; 2014 } 2015 break; 2016 } 2017 case MTIOCIEOT: 2018 case MTIOCEEOT: 2019 error = 0; 2020 break; 2021 case MTIOCRDSPOS: 2022 PENDING_MOUNT_CHECK(softc, periph, dev); 2023 error = sardpos(periph, 0, (u_int32_t *) arg); 2024 break; 2025 case MTIOCRDHPOS: 2026 PENDING_MOUNT_CHECK(softc, periph, dev); 2027 error = sardpos(periph, 1, (u_int32_t *) arg); 2028 break; 2029 case MTIOCSLOCATE: 2030 case MTIOCHLOCATE: { 2031 struct mtlocate locate_info; 2032 int hard; 2033 2034 bzero(&locate_info, sizeof(locate_info)); 2035 locate_info.logical_id = *((uint32_t *)arg); 2036 if (cmd == MTIOCSLOCATE) 2037 hard = 0; 2038 else 2039 hard = 1; 2040 2041 PENDING_MOUNT_CHECK(softc, periph, dev); 2042 2043 error = sasetpos(periph, hard, &locate_info); 2044 break; 2045 } 2046 case MTIOCEXTLOCATE: 2047 PENDING_MOUNT_CHECK(softc, periph, dev); 2048 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg); 2049 softc->flags &= 2050 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 2051 softc->flags &= ~SA_FLAG_ERR_PENDING; 2052 softc->filemarks = 0; 2053 break; 2054 case MTIOCGETEOTMODEL: 2055 error = 0; 2056 if (softc->quirks & SA_QUIRK_1FM) 2057 mode = 1; 2058 else 2059 mode = 2; 2060 *((u_int32_t *) arg) = mode; 2061 break; 2062 case MTIOCSETEOTMODEL: 2063 error = 0; 2064 switch (*((u_int32_t *) arg)) { 2065 case 1: 2066 softc->quirks &= ~SA_QUIRK_2FM; 2067 softc->quirks |= SA_QUIRK_1FM; 2068 break; 2069 case 2: 2070 softc->quirks &= ~SA_QUIRK_1FM; 2071 softc->quirks |= SA_QUIRK_2FM; 2072 break; 2073 default: 2074 error = EINVAL; 2075 break; 2076 } 2077 break; 2078 case MTIOCRBLIM: { 2079 struct mtrblim *rblim; 2080 2081 rblim = (struct mtrblim *)arg; 2082 2083 rblim->granularity = softc->blk_gran; 2084 rblim->min_block_length = softc->min_blk; 2085 rblim->max_block_length = softc->max_blk; 2086 break; 2087 } 2088 default: 2089 error = cam_periph_ioctl(periph, cmd, arg, saerror); 2090 break; 2091 } 2092 2093 /* 2094 * Check to see if we cleared a frozen state 2095 */ 2096 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 2097 switch(cmd) { 2098 case MTIOCRDSPOS: 2099 case MTIOCRDHPOS: 2100 case MTIOCSLOCATE: 2101 case MTIOCHLOCATE: 2102 /* 2103 * XXX KDM look at this. 2104 */ 2105 softc->fileno = (daddr_t) -1; 2106 softc->blkno = (daddr_t) -1; 2107 softc->rep_blkno = (daddr_t) -1; 2108 softc->rep_fileno = (daddr_t) -1; 2109 softc->partition = (daddr_t) -1; 2110 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 2111 xpt_print(periph->path, 2112 "tape state now unfrozen.\n"); 2113 break; 2114 default: 2115 break; 2116 } 2117 } 2118 if (didlockperiph) { 2119 cam_periph_unhold(periph); 2120 } 2121 cam_periph_unlock(periph); 2122 return (error); 2123} 2124 2125static void 2126sainit(void) 2127{ 2128 cam_status status; 2129 2130 /* 2131 * Install a global async callback. 2132 */ 2133 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 2134 2135 if (status != CAM_REQ_CMP) { 2136 printf("sa: Failed to attach master async callback " 2137 "due to status 0x%x!\n", status); 2138 } 2139} 2140 2141static void 2142sadevgonecb(void *arg) 2143{ 2144 struct cam_periph *periph; 2145 struct mtx *mtx; 2146 struct sa_softc *softc; 2147 2148 periph = (struct cam_periph *)arg; 2149 softc = (struct sa_softc *)periph->softc; 2150 2151 mtx = cam_periph_mtx(periph); 2152 mtx_lock(mtx); 2153 2154 softc->num_devs_to_destroy--; 2155 if (softc->num_devs_to_destroy == 0) { 2156 int i; 2157 2158 /* 2159 * When we have gotten all of our callbacks, we will get 2160 * no more close calls from devfs. So if we have any 2161 * dangling opens, we need to release the reference held 2162 * for that particular context. 2163 */ 2164 for (i = 0; i < softc->open_count; i++) 2165 cam_periph_release_locked(periph); 2166 2167 softc->open_count = 0; 2168 2169 /* 2170 * Release the reference held for devfs, all of our 2171 * instances are gone now. 2172 */ 2173 cam_periph_release_locked(periph); 2174 } 2175 2176 /* 2177 * We reference the lock directly here, instead of using 2178 * cam_periph_unlock(). The reason is that the final call to 2179 * cam_periph_release_locked() above could result in the periph 2180 * getting freed. If that is the case, dereferencing the periph 2181 * with a cam_periph_unlock() call would cause a page fault. 2182 */ 2183 mtx_unlock(mtx); 2184} 2185 2186static void 2187saoninvalidate(struct cam_periph *periph) 2188{ 2189 struct sa_softc *softc; 2190 2191 softc = (struct sa_softc *)periph->softc; 2192 2193 /* 2194 * De-register any async callbacks. 2195 */ 2196 xpt_register_async(0, saasync, periph, periph->path); 2197 2198 softc->flags |= SA_FLAG_INVALID; 2199 2200 /* 2201 * Return all queued I/O with ENXIO. 2202 * XXX Handle any transactions queued to the card 2203 * with XPT_ABORT_CCB. 2204 */ 2205 bioq_flush(&softc->bio_queue, NULL, ENXIO); 2206 softc->queue_count = 0; 2207 2208 /* 2209 * Tell devfs that all of our devices have gone away, and ask for a 2210 * callback when it has cleaned up its state. 2211 */ 2212 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph); 2213 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph); 2214 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph); 2215 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph); 2216} 2217 2218static void 2219sacleanup(struct cam_periph *periph) 2220{ 2221 struct sa_softc *softc; 2222 2223 softc = (struct sa_softc *)periph->softc; 2224 2225 cam_periph_unlock(periph); 2226 2227 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0 2228 && sysctl_ctx_free(&softc->sysctl_ctx) != 0) 2229 xpt_print(periph->path, "can't remove sysctl context\n"); 2230 2231 cam_periph_lock(periph); 2232 2233 devstat_remove_entry(softc->device_stats); 2234 2235 free(softc, M_SCSISA); 2236} 2237 2238static void 2239saasync(void *callback_arg, u_int32_t code, 2240 struct cam_path *path, void *arg) 2241{ 2242 struct cam_periph *periph; 2243 2244 periph = (struct cam_periph *)callback_arg; 2245 switch (code) { 2246 case AC_FOUND_DEVICE: 2247 { 2248 struct ccb_getdev *cgd; 2249 cam_status status; 2250 2251 cgd = (struct ccb_getdev *)arg; 2252 if (cgd == NULL) 2253 break; 2254 2255 if (cgd->protocol != PROTO_SCSI) 2256 break; 2257 2258 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 2259 break; 2260 2261 /* 2262 * Allocate a peripheral instance for 2263 * this device and start the probe 2264 * process. 2265 */ 2266 status = cam_periph_alloc(saregister, saoninvalidate, 2267 sacleanup, sastart, 2268 "sa", CAM_PERIPH_BIO, path, 2269 saasync, AC_FOUND_DEVICE, cgd); 2270 2271 if (status != CAM_REQ_CMP 2272 && status != CAM_REQ_INPROG) 2273 printf("saasync: Unable to probe new device " 2274 "due to status 0x%x\n", status); 2275 break; 2276 } 2277 default: 2278 cam_periph_async(periph, code, path, arg); 2279 break; 2280 } 2281} 2282 2283static void 2284sasetupdev(struct sa_softc *softc, struct cdev *dev) 2285{ 2286 dev->si_drv1 = softc->periph; 2287 dev->si_iosize_max = softc->maxio; 2288 dev->si_flags |= softc->si_flags; 2289 /* 2290 * Keep a count of how many non-alias devices we have created, 2291 * so we can make sure we clean them all up on shutdown. Aliases 2292 * are cleaned up when we destroy the device they're an alias for. 2293 */ 2294 if ((dev->si_flags & SI_ALIAS) == 0) 2295 softc->num_devs_to_destroy++; 2296} 2297 2298static void 2299sasysctlinit(void *context, int pending) 2300{ 2301 struct cam_periph *periph; 2302 struct sa_softc *softc; 2303 char tmpstr[80], tmpstr2[80]; 2304 2305 periph = (struct cam_periph *)context; 2306 /* 2307 * If the periph is invalid, no need to setup the sysctls. 2308 */ 2309 if (periph->flags & CAM_PERIPH_INVALID) 2310 goto bailout; 2311 2312 softc = (struct sa_softc *)periph->softc; 2313 2314 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number); 2315 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number); 2316 2317 sysctl_ctx_init(&softc->sysctl_ctx); 2318 softc->flags |= SA_FLAG_SCTX_INIT; 2319 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 2320 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2, 2321 CTLFLAG_RD, 0, tmpstr); 2322 if (softc->sysctl_tree == NULL) 2323 goto bailout; 2324 2325 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2326 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH, 2327 &softc->allow_io_split, 0, "Allow Splitting I/O"); 2328 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2329 OID_AUTO, "maxio", CTLFLAG_RD, 2330 &softc->maxio, 0, "Maximum I/O size"); 2331 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree), 2332 OID_AUTO, "cpi_maxio", CTLFLAG_RD, 2333 &softc->cpi_maxio, 0, "Maximum Controller I/O size"); 2334 2335bailout: 2336 /* 2337 * Release the reference that was held when this task was enqueued. 2338 */ 2339 cam_periph_release(periph); 2340} 2341 2342static cam_status 2343saregister(struct cam_periph *periph, void *arg) 2344{ 2345 struct sa_softc *softc; 2346 struct ccb_getdev *cgd; 2347 struct ccb_pathinq cpi; 2348 caddr_t match; 2349 char tmpstr[80]; 2350 2351 cgd = (struct ccb_getdev *)arg; 2352 if (cgd == NULL) { 2353 printf("saregister: no getdev CCB, can't register device\n"); 2354 return (CAM_REQ_CMP_ERR); 2355 } 2356 2357 softc = (struct sa_softc *) 2358 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 2359 if (softc == NULL) { 2360 printf("saregister: Unable to probe new device. " 2361 "Unable to allocate softc\n"); 2362 return (CAM_REQ_CMP_ERR); 2363 } 2364 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 2365 softc->state = SA_STATE_NORMAL; 2366 softc->fileno = (daddr_t) -1; 2367 softc->blkno = (daddr_t) -1; 2368 softc->rep_fileno = (daddr_t) -1; 2369 softc->rep_blkno = (daddr_t) -1; 2370 softc->partition = (daddr_t) -1; 2371 softc->bop = -1; 2372 softc->eop = -1; 2373 softc->bpew = -1; 2374 2375 bioq_init(&softc->bio_queue); 2376 softc->periph = periph; 2377 periph->softc = softc; 2378 2379 /* 2380 * See if this device has any quirks. 2381 */ 2382 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 2383 (caddr_t)sa_quirk_table, 2384 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 2385 sizeof(*sa_quirk_table), scsi_inquiry_match); 2386 2387 if (match != NULL) { 2388 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 2389 softc->last_media_blksize = 2390 ((struct sa_quirk_entry *)match)->prefblk; 2391 } else 2392 softc->quirks = SA_QUIRK_NONE; 2393 2394 /* 2395 * Long format data for READ POSITION was introduced in SSC, which 2396 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive 2397 * reports that it is SCSI-2 or older, it is unlikely to support 2398 * long position data, but it might. Some drives from that era 2399 * claim to be SCSI-2, but do support long position information. 2400 * So, instead of immediately disabling long position information 2401 * for SCSI-2 devices, we'll try one pass through sagetpos(), and 2402 * then disable long position information if we get an error. 2403 */ 2404 if (cgd->inq_data.version <= SCSI_REV_CCS) 2405 softc->quirks |= SA_QUIRK_NO_LONG_POS; 2406 2407 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) { 2408 struct ccb_dev_advinfo cdai; 2409 struct scsi_vpd_extended_inquiry_data ext_inq; 2410 2411 bzero(&ext_inq, sizeof(ext_inq)); 2412 2413 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2414 2415 cdai.ccb_h.func_code = XPT_DEV_ADVINFO; 2416 cdai.flags = CDAI_FLAG_NONE; 2417 cdai.buftype = CDAI_TYPE_EXT_INQ; 2418 cdai.bufsiz = sizeof(ext_inq); 2419 cdai.buf = (uint8_t *)&ext_inq; 2420 xpt_action((union ccb *)&cdai); 2421 2422 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0) 2423 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE); 2424 if ((cdai.ccb_h.status == CAM_REQ_CMP) 2425 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP)) 2426 softc->flags |= SA_FLAG_PROTECT_SUPP; 2427 } 2428 2429 bzero(&cpi, sizeof(cpi)); 2430 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 2431 cpi.ccb_h.func_code = XPT_PATH_INQ; 2432 xpt_action((union ccb *)&cpi); 2433 2434 /* 2435 * The SA driver supports a blocksize, but we don't know the 2436 * blocksize until we media is inserted. So, set a flag to 2437 * indicate that the blocksize is unavailable right now. 2438 */ 2439 cam_periph_unlock(periph); 2440 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 2441 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 2442 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 2443 2444 /* 2445 * Load the default value that is either compiled in, or loaded 2446 * in the global kern.cam.sa.allow_io_split tunable. 2447 */ 2448 softc->allow_io_split = sa_allow_io_split; 2449 2450 /* 2451 * Load a per-instance tunable, if it exists. NOTE that this 2452 * tunable WILL GO AWAY in FreeBSD 11.0. 2453 */ 2454 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split", 2455 periph->unit_number); 2456 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split); 2457 2458 /* 2459 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take 2460 * the smaller of cpi.maxio or MAXPHYS. 2461 */ 2462 if (cpi.maxio == 0) 2463 softc->maxio = DFLTPHYS; 2464 else if (cpi.maxio > MAXPHYS) 2465 softc->maxio = MAXPHYS; 2466 else 2467 softc->maxio = cpi.maxio; 2468 2469 /* 2470 * Record the controller's maximum I/O size so we can report it to 2471 * the user later. 2472 */ 2473 softc->cpi_maxio = cpi.maxio; 2474 2475 /* 2476 * By default we tell physio that we do not want our I/O split. 2477 * The user needs to have a 1:1 mapping between the size of his 2478 * write to a tape character device and the size of the write 2479 * that actually goes down to the drive. 2480 */ 2481 if (softc->allow_io_split == 0) 2482 softc->si_flags = SI_NOSPLIT; 2483 else 2484 softc->si_flags = 0; 2485 2486 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph); 2487 2488 /* 2489 * If the SIM supports unmapped I/O, let physio know that we can 2490 * handle unmapped buffers. 2491 */ 2492 if (cpi.hba_misc & PIM_UNMAPPED) 2493 softc->si_flags |= SI_UNMAPPED; 2494 2495 /* 2496 * Acquire a reference to the periph before we create the devfs 2497 * instances for it. We'll release this reference once the devfs 2498 * instances have been freed. 2499 */ 2500 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 2501 xpt_print(periph->path, "%s: lost periph during " 2502 "registration!\n", __func__); 2503 cam_periph_lock(periph); 2504 return (CAM_REQ_CMP_ERR); 2505 } 2506 2507 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 2508 SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 2509 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 2510 sasetupdev(softc, softc->devs.ctl_dev); 2511 2512 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2513 SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 2514 0660, "%s%d", periph->periph_name, periph->unit_number); 2515 sasetupdev(softc, softc->devs.r_dev); 2516 2517 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2518 SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 2519 0660, "n%s%d", periph->periph_name, periph->unit_number); 2520 sasetupdev(softc, softc->devs.nr_dev); 2521 2522 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 2523 SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 2524 0660, "e%s%d", periph->periph_name, periph->unit_number); 2525 sasetupdev(softc, softc->devs.er_dev); 2526 2527 cam_periph_lock(periph); 2528 2529 softc->density_type_bits[0] = 0; 2530 softc->density_type_bits[1] = SRDS_MEDIA; 2531 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE; 2532 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA; 2533 /* 2534 * Bump the peripheral refcount for the sysctl thread, in case we 2535 * get invalidated before the thread has a chance to run. 2536 */ 2537 cam_periph_acquire(periph); 2538 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task); 2539 2540 /* 2541 * Add an async callback so that we get 2542 * notified if this device goes away. 2543 */ 2544 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 2545 2546 xpt_announce_periph(periph, NULL); 2547 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 2548 2549 return (CAM_REQ_CMP); 2550} 2551 2552static void 2553sastart(struct cam_periph *periph, union ccb *start_ccb) 2554{ 2555 struct sa_softc *softc; 2556 2557 softc = (struct sa_softc *)periph->softc; 2558 2559 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 2560 2561 2562 switch (softc->state) { 2563 case SA_STATE_NORMAL: 2564 { 2565 /* Pull a buffer from the queue and get going on it */ 2566 struct bio *bp; 2567 2568 /* 2569 * See if there is a buf with work for us to do.. 2570 */ 2571 bp = bioq_first(&softc->bio_queue); 2572 if (bp == NULL) { 2573 xpt_release_ccb(start_ccb); 2574 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 2575 struct bio *done_bp; 2576again: 2577 softc->queue_count--; 2578 bioq_remove(&softc->bio_queue, bp); 2579 bp->bio_resid = bp->bio_bcount; 2580 done_bp = bp; 2581 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 2582 /* 2583 * We have two different behaviors for 2584 * writes when we hit either Early Warning 2585 * or the PEWZ (Programmable Early Warning 2586 * Zone). The default behavior is that 2587 * for all writes that are currently 2588 * queued after the write where we saw the 2589 * early warning, we will return the write 2590 * with the residual equal to the count. 2591 * i.e. tell the application that 0 bytes 2592 * were written. 2593 * 2594 * The alternate behavior, which is enabled 2595 * when eot_warn is set, is that in 2596 * addition to setting the residual equal 2597 * to the count, we will set the error 2598 * to ENOSPC. 2599 * 2600 * In either case, once queued writes are 2601 * cleared out, we clear the error flag 2602 * (see below) and the application is free to 2603 * attempt to write more. 2604 */ 2605 if (softc->eot_warn != 0) { 2606 bp->bio_flags |= BIO_ERROR; 2607 bp->bio_error = ENOSPC; 2608 } else 2609 bp->bio_error = 0; 2610 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 2611 /* 2612 * This can only happen if we're reading 2613 * in fixed length mode. In this case, 2614 * we dump the rest of the list the 2615 * same way. 2616 */ 2617 bp->bio_error = 0; 2618 if (bioq_first(&softc->bio_queue) != NULL) { 2619 biodone(done_bp); 2620 goto again; 2621 } 2622 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 2623 bp->bio_error = EIO; 2624 bp->bio_flags |= BIO_ERROR; 2625 } 2626 bp = bioq_first(&softc->bio_queue); 2627 /* 2628 * Only if we have no other buffers queued up 2629 * do we clear the pending error flag. 2630 */ 2631 if (bp == NULL) 2632 softc->flags &= ~SA_FLAG_ERR_PENDING; 2633 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2634 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 2635 "%d more buffers queued up\n", 2636 (softc->flags & SA_FLAG_ERR_PENDING), 2637 (bp != NULL)? "not " : " ", softc->queue_count)); 2638 xpt_release_ccb(start_ccb); 2639 biodone(done_bp); 2640 } else { 2641 u_int32_t length; 2642 2643 bioq_remove(&softc->bio_queue, bp); 2644 softc->queue_count--; 2645 2646 length = bp->bio_bcount; 2647 2648 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2649 if (softc->blk_shift != 0) { 2650 length = length >> softc->blk_shift; 2651 } else if (softc->media_blksize != 0) { 2652 length = length / softc->media_blksize; 2653 } else { 2654 bp->bio_error = EIO; 2655 xpt_print(periph->path, "zero blocksize" 2656 " for FIXED length writes?\n"); 2657 biodone(bp); 2658 break; 2659 } 2660#if 0 2661 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2662 ("issuing a %d fixed record %s\n", 2663 length, (bp->bio_cmd == BIO_READ)? "read" : 2664 "write")); 2665#endif 2666 } else { 2667#if 0 2668 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 2669 ("issuing a %d variable byte %s\n", 2670 length, (bp->bio_cmd == BIO_READ)? "read" : 2671 "write")); 2672#endif 2673 } 2674 devstat_start_transaction_bio(softc->device_stats, bp); 2675 /* 2676 * Some people have theorized that we should 2677 * suppress illegal length indication if we are 2678 * running in variable block mode so that we don't 2679 * have to request sense every time our requested 2680 * block size is larger than the written block. 2681 * The residual information from the ccb allows 2682 * us to identify this situation anyway. The only 2683 * problem with this is that we will not get 2684 * information about blocks that are larger than 2685 * our read buffer unless we set the block size 2686 * in the mode page to something other than 0. 2687 * 2688 * I believe that this is a non-issue. If user apps 2689 * don't adjust their read size to match our record 2690 * size, that's just life. Anyway, the typical usage 2691 * would be to issue, e.g., 64KB reads and occasionally 2692 * have to do deal with 512 byte or 1KB intermediate 2693 * records. 2694 * 2695 * That said, though, we now support setting the 2696 * SILI bit on reads, and we set the blocksize to 4 2697 * bytes when we do that. This gives us 2698 * compatibility with software that wants this, 2699 * although the only real difference between that 2700 * and not setting the SILI bit on reads is that we 2701 * won't get a check condition on reads where our 2702 * request size is larger than the block on tape. 2703 * That probably only makes a real difference in 2704 * non-packetized SCSI, where you have to go back 2705 * to the drive to request sense and thus incur 2706 * more latency. 2707 */ 2708 softc->dsreg = (bp->bio_cmd == BIO_READ)? 2709 MTIO_DSREG_RD : MTIO_DSREG_WR; 2710 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 2711 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 2712 SCSI_RW_READ : SCSI_RW_WRITE) | 2713 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 2714 SCSI_RW_BIO : 0), softc->sili, 2715 (softc->flags & SA_FLAG_FIXED) != 0, length, 2716 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 2717 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 2718 IO_TIMEOUT); 2719 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 2720 start_ccb->ccb_h.ccb_bp = bp; 2721 bp = bioq_first(&softc->bio_queue); 2722 xpt_action(start_ccb); 2723 } 2724 2725 if (bp != NULL) { 2726 /* Have more work to do, so ensure we stay scheduled */ 2727 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 2728 } 2729 break; 2730 } 2731 case SA_STATE_ABNORMAL: 2732 default: 2733 panic("state 0x%x in sastart", softc->state); 2734 break; 2735 } 2736} 2737 2738 2739static void 2740sadone(struct cam_periph *periph, union ccb *done_ccb) 2741{ 2742 struct sa_softc *softc; 2743 struct ccb_scsiio *csio; 2744 struct bio *bp; 2745 int error; 2746 2747 softc = (struct sa_softc *)periph->softc; 2748 csio = &done_ccb->csio; 2749 2750 softc->dsreg = MTIO_DSREG_REST; 2751 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 2752 error = 0; 2753 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 2754 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 2755 /* 2756 * A retry was scheduled, so just return. 2757 */ 2758 return; 2759 } 2760 } 2761 2762 if (error == EIO) { 2763 2764 /* 2765 * Catastrophic error. Mark the tape as frozen 2766 * (we no longer know tape position). 2767 * 2768 * Return all queued I/O with EIO, and unfreeze 2769 * our queue so that future transactions that 2770 * attempt to fix this problem can get to the 2771 * device. 2772 * 2773 */ 2774 2775 softc->flags |= SA_FLAG_TAPE_FROZEN; 2776 bioq_flush(&softc->bio_queue, NULL, EIO); 2777 } 2778 if (error != 0) { 2779 bp->bio_resid = bp->bio_bcount; 2780 bp->bio_error = error; 2781 bp->bio_flags |= BIO_ERROR; 2782 /* 2783 * In the error case, position is updated in saerror. 2784 */ 2785 } else { 2786 bp->bio_resid = csio->resid; 2787 bp->bio_error = 0; 2788 if (csio->resid != 0) { 2789 bp->bio_flags |= BIO_ERROR; 2790 } 2791 if (bp->bio_cmd == BIO_WRITE) { 2792 softc->flags |= SA_FLAG_TAPE_WRITTEN; 2793 softc->filemarks = 0; 2794 } 2795 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 2796 (softc->blkno != (daddr_t) -1)) { 2797 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2798 u_int32_t l; 2799 if (softc->blk_shift != 0) { 2800 l = bp->bio_bcount >> 2801 softc->blk_shift; 2802 } else { 2803 l = bp->bio_bcount / 2804 softc->media_blksize; 2805 } 2806 softc->blkno += (daddr_t) l; 2807 } else { 2808 softc->blkno++; 2809 } 2810 } 2811 } 2812 /* 2813 * If we had an error (immediate or pending), 2814 * release the device queue now. 2815 */ 2816 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 2817 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 2818 if (error || bp->bio_resid) { 2819 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2820 ("error %d resid %ld count %ld\n", error, 2821 bp->bio_resid, bp->bio_bcount)); 2822 } 2823 biofinish(bp, softc->device_stats, 0); 2824 xpt_release_ccb(done_ccb); 2825} 2826 2827/* 2828 * Mount the tape (make sure it's ready for I/O). 2829 */ 2830static int 2831samount(struct cam_periph *periph, int oflags, struct cdev *dev) 2832{ 2833 struct sa_softc *softc; 2834 union ccb *ccb; 2835 int error; 2836 2837 /* 2838 * oflags can be checked for 'kind' of open (read-only check) - later 2839 * dev can be checked for a control-mode or compression open - later 2840 */ 2841 UNUSED_PARAMETER(oflags); 2842 UNUSED_PARAMETER(dev); 2843 2844 2845 softc = (struct sa_softc *)periph->softc; 2846 2847 /* 2848 * This should determine if something has happend since the last 2849 * open/mount that would invalidate the mount. We do *not* want 2850 * to retry this command- we just want the status. But we only 2851 * do this if we're mounted already- if we're not mounted, 2852 * we don't care about the unit read state and can instead use 2853 * this opportunity to attempt to reserve the tape unit. 2854 */ 2855 2856 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 2857 ccb = cam_periph_getccb(periph, 1); 2858 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2859 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2860 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2861 softc->device_stats); 2862 if (error == ENXIO) { 2863 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2864 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2865 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2866 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2867 softc->device_stats); 2868 } else if (error) { 2869 /* 2870 * We don't need to freeze the tape because we 2871 * will now attempt to rewind/load it. 2872 */ 2873 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 2874 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2875 xpt_print(periph->path, 2876 "error %d on TUR in samount\n", error); 2877 } 2878 } 2879 } else { 2880 error = sareservereleaseunit(periph, TRUE); 2881 if (error) { 2882 return (error); 2883 } 2884 ccb = cam_periph_getccb(periph, 1); 2885 scsi_test_unit_ready(&ccb->csio, 0, sadone, 2886 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 2887 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2888 softc->device_stats); 2889 } 2890 2891 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 2892 struct scsi_read_block_limits_data *rblim = NULL; 2893 int comp_enabled, comp_supported; 2894 u_int8_t write_protect, guessing = 0; 2895 2896 /* 2897 * Clear out old state. 2898 */ 2899 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 2900 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION); 2901 softc->filemarks = 0; 2902 2903 /* 2904 * *Very* first off, make sure we're loaded to BOT. 2905 */ 2906 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2907 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 2908 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2909 softc->device_stats); 2910 2911 /* 2912 * In case this doesn't work, do a REWIND instead 2913 */ 2914 if (error) { 2915 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 2916 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2917 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2918 softc->device_stats); 2919 } 2920 if (error) { 2921 xpt_release_ccb(ccb); 2922 goto exit; 2923 } 2924 2925 /* 2926 * Do a dummy test read to force access to the 2927 * media so that the drive will really know what's 2928 * there. We actually don't really care what the 2929 * blocksize on tape is and don't expect to really 2930 * read a full record. 2931 */ 2932 rblim = (struct scsi_read_block_limits_data *) 2933 malloc(8192, M_SCSISA, M_NOWAIT); 2934 if (rblim == NULL) { 2935 xpt_print(periph->path, "no memory for test read\n"); 2936 xpt_release_ccb(ccb); 2937 error = ENOMEM; 2938 goto exit; 2939 } 2940 2941 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 2942 scsi_sa_read_write(&ccb->csio, 0, sadone, 2943 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 2944 (void *) rblim, 8192, SSD_FULL_SIZE, 2945 IO_TIMEOUT); 2946 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2947 softc->device_stats); 2948 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2949 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 2950 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2951 SF_NO_PRINT | SF_RETRY_UA, 2952 softc->device_stats); 2953 if (error) { 2954 xpt_print(periph->path, 2955 "unable to rewind after test read\n"); 2956 xpt_release_ccb(ccb); 2957 goto exit; 2958 } 2959 } 2960 2961 /* 2962 * Next off, determine block limits. 2963 */ 2964 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2965 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2966 2967 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 2968 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2969 2970 xpt_release_ccb(ccb); 2971 2972 if (error != 0) { 2973 /* 2974 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2975 * a MANDATORY command. Anyway- it doesn't matter- 2976 * we can proceed anyway. 2977 */ 2978 softc->blk_gran = 0; 2979 softc->max_blk = ~0; 2980 softc->min_blk = 0; 2981 } else { 2982 if (softc->scsi_rev >= SCSI_REV_SPC) { 2983 softc->blk_gran = RBL_GRAN(rblim); 2984 } else { 2985 softc->blk_gran = 0; 2986 } 2987 /* 2988 * We take max_blk == min_blk to mean a default to 2989 * fixed mode- but note that whatever we get out of 2990 * sagetparams below will actually determine whether 2991 * we are actually *in* fixed mode. 2992 */ 2993 softc->max_blk = scsi_3btoul(rblim->maximum); 2994 softc->min_blk = scsi_2btoul(rblim->minimum); 2995 2996 2997 } 2998 /* 2999 * Next, perform a mode sense to determine 3000 * current density, blocksize, compression etc. 3001 */ 3002 error = sagetparams(periph, SA_PARAM_ALL, 3003 &softc->media_blksize, 3004 &softc->media_density, 3005 &softc->media_numblks, 3006 &softc->buffer_mode, &write_protect, 3007 &softc->speed, &comp_supported, 3008 &comp_enabled, &softc->comp_algorithm, 3009 NULL, NULL, 0, 0); 3010 3011 if (error != 0) { 3012 /* 3013 * We could work a little harder here. We could 3014 * adjust our attempts to get information. It 3015 * might be an ancient tape drive. If someone 3016 * nudges us, we'll do that. 3017 */ 3018 goto exit; 3019 } 3020 3021 /* 3022 * If no quirk has determined that this is a device that is 3023 * preferred to be in fixed or variable mode, now is the time 3024 * to find out. 3025 */ 3026 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 3027 guessing = 1; 3028 /* 3029 * This could be expensive to find out. Luckily we 3030 * only need to do this once. If we start out in 3031 * 'default' mode, try and set ourselves to one 3032 * of the densities that would determine a wad 3033 * of other stuff. Go from highest to lowest. 3034 */ 3035 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 3036 int i; 3037 static u_int8_t ctry[] = { 3038 SCSI_DENSITY_HALFINCH_PE, 3039 SCSI_DENSITY_HALFINCH_6250C, 3040 SCSI_DENSITY_HALFINCH_6250, 3041 SCSI_DENSITY_HALFINCH_1600, 3042 SCSI_DENSITY_HALFINCH_800, 3043 SCSI_DENSITY_QIC_4GB, 3044 SCSI_DENSITY_QIC_2GB, 3045 SCSI_DENSITY_QIC_525_320, 3046 SCSI_DENSITY_QIC_150, 3047 SCSI_DENSITY_QIC_120, 3048 SCSI_DENSITY_QIC_24, 3049 SCSI_DENSITY_QIC_11_9TRK, 3050 SCSI_DENSITY_QIC_11_4TRK, 3051 SCSI_DENSITY_QIC_1320, 3052 SCSI_DENSITY_QIC_3080, 3053 0 3054 }; 3055 for (i = 0; ctry[i]; i++) { 3056 error = sasetparams(periph, 3057 SA_PARAM_DENSITY, 0, ctry[i], 3058 0, SF_NO_PRINT); 3059 if (error == 0) { 3060 softc->media_density = ctry[i]; 3061 break; 3062 } 3063 } 3064 } 3065 switch (softc->media_density) { 3066 case SCSI_DENSITY_QIC_11_4TRK: 3067 case SCSI_DENSITY_QIC_11_9TRK: 3068 case SCSI_DENSITY_QIC_24: 3069 case SCSI_DENSITY_QIC_120: 3070 case SCSI_DENSITY_QIC_150: 3071 case SCSI_DENSITY_QIC_525_320: 3072 case SCSI_DENSITY_QIC_1320: 3073 case SCSI_DENSITY_QIC_3080: 3074 softc->quirks &= ~SA_QUIRK_2FM; 3075 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3076 softc->last_media_blksize = 512; 3077 break; 3078 case SCSI_DENSITY_QIC_4GB: 3079 case SCSI_DENSITY_QIC_2GB: 3080 softc->quirks &= ~SA_QUIRK_2FM; 3081 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 3082 softc->last_media_blksize = 1024; 3083 break; 3084 default: 3085 softc->last_media_blksize = 3086 softc->media_blksize; 3087 softc->quirks |= SA_QUIRK_VARIABLE; 3088 break; 3089 } 3090 } 3091 3092 /* 3093 * If no quirk has determined that this is a device that needs 3094 * to have 2 Filemarks at EOD, now is the time to find out. 3095 */ 3096 3097 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 3098 switch (softc->media_density) { 3099 case SCSI_DENSITY_HALFINCH_800: 3100 case SCSI_DENSITY_HALFINCH_1600: 3101 case SCSI_DENSITY_HALFINCH_6250: 3102 case SCSI_DENSITY_HALFINCH_6250C: 3103 case SCSI_DENSITY_HALFINCH_PE: 3104 softc->quirks &= ~SA_QUIRK_1FM; 3105 softc->quirks |= SA_QUIRK_2FM; 3106 break; 3107 default: 3108 break; 3109 } 3110 } 3111 3112 /* 3113 * Now validate that some info we got makes sense. 3114 */ 3115 if ((softc->max_blk < softc->media_blksize) || 3116 (softc->min_blk > softc->media_blksize && 3117 softc->media_blksize)) { 3118 xpt_print(periph->path, 3119 "BLOCK LIMITS (%d..%d) could not match current " 3120 "block settings (%d)- adjusting\n", softc->min_blk, 3121 softc->max_blk, softc->media_blksize); 3122 softc->max_blk = softc->min_blk = 3123 softc->media_blksize; 3124 } 3125 3126 /* 3127 * Now put ourselves into the right frame of mind based 3128 * upon quirks... 3129 */ 3130tryagain: 3131 /* 3132 * If we want to be in FIXED mode and our current blocksize 3133 * is not equal to our last blocksize (if nonzero), try and 3134 * set ourselves to this last blocksize (as the 'preferred' 3135 * block size). The initial quirkmatch at registry sets the 3136 * initial 'last' blocksize. If, for whatever reason, this 3137 * 'last' blocksize is zero, set the blocksize to 512, 3138 * or min_blk if that's larger. 3139 */ 3140 if ((softc->quirks & SA_QUIRK_FIXED) && 3141 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 3142 (softc->media_blksize != softc->last_media_blksize)) { 3143 softc->media_blksize = softc->last_media_blksize; 3144 if (softc->media_blksize == 0) { 3145 softc->media_blksize = 512; 3146 if (softc->media_blksize < softc->min_blk) { 3147 softc->media_blksize = softc->min_blk; 3148 } 3149 } 3150 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3151 softc->media_blksize, 0, 0, SF_NO_PRINT); 3152 if (error) { 3153 xpt_print(periph->path, 3154 "unable to set fixed blocksize to %d\n", 3155 softc->media_blksize); 3156 goto exit; 3157 } 3158 } 3159 3160 if ((softc->quirks & SA_QUIRK_VARIABLE) && 3161 (softc->media_blksize != 0)) { 3162 softc->last_media_blksize = softc->media_blksize; 3163 softc->media_blksize = 0; 3164 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 3165 0, 0, 0, SF_NO_PRINT); 3166 if (error) { 3167 /* 3168 * If this fails and we were guessing, just 3169 * assume that we got it wrong and go try 3170 * fixed block mode. Don't even check against 3171 * density code at this point. 3172 */ 3173 if (guessing) { 3174 softc->quirks &= ~SA_QUIRK_VARIABLE; 3175 softc->quirks |= SA_QUIRK_FIXED; 3176 if (softc->last_media_blksize == 0) 3177 softc->last_media_blksize = 512; 3178 goto tryagain; 3179 } 3180 xpt_print(periph->path, 3181 "unable to set variable blocksize\n"); 3182 goto exit; 3183 } 3184 } 3185 3186 /* 3187 * Now that we have the current block size, 3188 * set up some parameters for sastart's usage. 3189 */ 3190 if (softc->media_blksize) { 3191 softc->flags |= SA_FLAG_FIXED; 3192 if (powerof2(softc->media_blksize)) { 3193 softc->blk_shift = 3194 ffs(softc->media_blksize) - 1; 3195 softc->blk_mask = softc->media_blksize - 1; 3196 } else { 3197 softc->blk_mask = ~0; 3198 softc->blk_shift = 0; 3199 } 3200 } else { 3201 /* 3202 * The SCSI-3 spec allows 0 to mean "unspecified". 3203 * The SCSI-1 spec allows 0 to mean 'infinite'. 3204 * 3205 * Either works here. 3206 */ 3207 if (softc->max_blk == 0) { 3208 softc->max_blk = ~0; 3209 } 3210 softc->blk_shift = 0; 3211 if (softc->blk_gran != 0) { 3212 softc->blk_mask = softc->blk_gran - 1; 3213 } else { 3214 softc->blk_mask = 0; 3215 } 3216 } 3217 3218 if (write_protect) 3219 softc->flags |= SA_FLAG_TAPE_WP; 3220 3221 if (comp_supported) { 3222 if (softc->saved_comp_algorithm == 0) 3223 softc->saved_comp_algorithm = 3224 softc->comp_algorithm; 3225 softc->flags |= SA_FLAG_COMP_SUPP; 3226 if (comp_enabled) 3227 softc->flags |= SA_FLAG_COMP_ENABLED; 3228 } else 3229 softc->flags |= SA_FLAG_COMP_UNSUPP; 3230 3231 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 3232 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 3233 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 3234 0, 0, SF_NO_PRINT); 3235 if (error == 0) { 3236 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 3237 } else { 3238 xpt_print(periph->path, 3239 "unable to set buffered mode\n"); 3240 } 3241 error = 0; /* not an error */ 3242 } 3243 3244 3245 if (error == 0) { 3246 softc->flags |= SA_FLAG_TAPE_MOUNTED; 3247 } 3248exit: 3249 if (rblim != NULL) 3250 free(rblim, M_SCSISA); 3251 3252 if (error != 0) { 3253 softc->dsreg = MTIO_DSREG_NIL; 3254 } else { 3255 softc->fileno = softc->blkno = 0; 3256 softc->rep_fileno = softc->rep_blkno = -1; 3257 softc->partition = 0; 3258 softc->dsreg = MTIO_DSREG_REST; 3259 } 3260#ifdef SA_1FM_AT_EOD 3261 if ((softc->quirks & SA_QUIRK_2FM) == 0) 3262 softc->quirks |= SA_QUIRK_1FM; 3263#else 3264 if ((softc->quirks & SA_QUIRK_1FM) == 0) 3265 softc->quirks |= SA_QUIRK_2FM; 3266#endif 3267 } else 3268 xpt_release_ccb(ccb); 3269 3270 /* 3271 * If we return an error, we're not mounted any more, 3272 * so release any device reservation. 3273 */ 3274 if (error != 0) { 3275 (void) sareservereleaseunit(periph, FALSE); 3276 } else { 3277 /* 3278 * Clear I/O residual. 3279 */ 3280 softc->last_io_resid = 0; 3281 softc->last_ctl_resid = 0; 3282 } 3283 return (error); 3284} 3285 3286/* 3287 * How many filemarks do we need to write if we were to terminate the 3288 * tape session right now? Note that this can be a negative number 3289 */ 3290 3291static int 3292samarkswanted(struct cam_periph *periph) 3293{ 3294 int markswanted; 3295 struct sa_softc *softc; 3296 3297 softc = (struct sa_softc *)periph->softc; 3298 markswanted = 0; 3299 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 3300 markswanted++; 3301 if (softc->quirks & SA_QUIRK_2FM) 3302 markswanted++; 3303 } 3304 markswanted -= softc->filemarks; 3305 return (markswanted); 3306} 3307 3308static int 3309sacheckeod(struct cam_periph *periph) 3310{ 3311 int error; 3312 int markswanted; 3313 3314 markswanted = samarkswanted(periph); 3315 3316 if (markswanted > 0) { 3317 error = sawritefilemarks(periph, markswanted, FALSE, FALSE); 3318 } else { 3319 error = 0; 3320 } 3321 return (error); 3322} 3323 3324static int 3325saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 3326{ 3327 static const char *toobig = 3328 "%d-byte tape record bigger than supplied buffer\n"; 3329 struct cam_periph *periph; 3330 struct sa_softc *softc; 3331 struct ccb_scsiio *csio; 3332 struct scsi_sense_data *sense; 3333 uint64_t resid = 0; 3334 int64_t info = 0; 3335 cam_status status; 3336 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 3337 int sense_len; 3338 uint8_t stream_bits; 3339 3340 periph = xpt_path_periph(ccb->ccb_h.path); 3341 softc = (struct sa_softc *)periph->softc; 3342 csio = &ccb->csio; 3343 sense = &csio->sense_data; 3344 sense_len = csio->sense_len - csio->sense_resid; 3345 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 3346 &asc, &ascq, /*show_errors*/ 1); 3347 if (asc != -1 && ascq != -1) 3348 aqvalid = 1; 3349 else 3350 aqvalid = 0; 3351 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 3352 stream_valid = 1; 3353 else 3354 stream_valid = 0; 3355 error = 0; 3356 3357 status = csio->ccb_h.status & CAM_STATUS_MASK; 3358 3359 /* 3360 * Calculate/latch up, any residuals... We do this in a funny 2-step 3361 * so we can print stuff here if we have CAM_DEBUG enabled for this 3362 * unit. 3363 */ 3364 if (status == CAM_SCSI_STATUS_ERROR) { 3365 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 3366 &info) == 0) { 3367 if ((softc->flags & SA_FLAG_FIXED) != 0) 3368 resid *= softc->media_blksize; 3369 } else { 3370 resid = csio->dxfer_len; 3371 info = resid; 3372 if ((softc->flags & SA_FLAG_FIXED) != 0) { 3373 if (softc->media_blksize) 3374 info /= softc->media_blksize; 3375 } 3376 } 3377 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3378 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3379 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 3380 sizeof (struct scsi_sense_data)); 3381 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 3382 (int) csio->cdb_len); 3383 softc->last_io_resid = resid; 3384 softc->last_resid_was_io = 1; 3385 } else { 3386 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 3387 sizeof (struct scsi_sense_data)); 3388 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 3389 (int) csio->cdb_len); 3390 softc->last_ctl_resid = resid; 3391 softc->last_resid_was_io = 0; 3392 } 3393 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 3394 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 3395 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 3396 sense_key, asc, ascq, status, 3397 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 3398 csio->dxfer_len)); 3399 } else { 3400 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 3401 ("Cam Status 0x%x\n", status)); 3402 } 3403 3404 switch (status) { 3405 case CAM_REQ_CMP: 3406 return (0); 3407 case CAM_SCSI_STATUS_ERROR: 3408 /* 3409 * If a read/write command, we handle it here. 3410 */ 3411 if (csio->cdb_io.cdb_bytes[0] == SA_READ || 3412 csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3413 break; 3414 } 3415 /* 3416 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 3417 * on a non read/write command, we assume it's not an error 3418 * and propagate the residule and return. 3419 */ 3420 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 3421 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 3422 csio->resid = resid; 3423 QFRLS(ccb); 3424 return (0); 3425 } 3426 /* 3427 * Otherwise, we let the common code handle this. 3428 */ 3429 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3430 3431 /* 3432 * XXX: To Be Fixed 3433 * We cannot depend upon CAM honoring retry counts for these. 3434 */ 3435 case CAM_SCSI_BUS_RESET: 3436 case CAM_BDR_SENT: 3437 if (ccb->ccb_h.retry_count <= 0) { 3438 return (EIO); 3439 } 3440 /* FALLTHROUGH */ 3441 default: 3442 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 3443 } 3444 3445 /* 3446 * Handle filemark, end of tape, mismatched record sizes.... 3447 * From this point out, we're only handling read/write cases. 3448 * Handle writes && reads differently. 3449 */ 3450 3451 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 3452 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 3453 csio->resid = resid; 3454 error = ENOSPC; 3455 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 3456 softc->flags |= SA_FLAG_EOM_PENDING; 3457 /* 3458 * Grotesque as it seems, the few times 3459 * I've actually seen a non-zero resid, 3460 * the tape drive actually lied and had 3461 * written all the data!. 3462 */ 3463 csio->resid = 0; 3464 } 3465 } else { 3466 csio->resid = resid; 3467 if (sense_key == SSD_KEY_BLANK_CHECK) { 3468 if (softc->quirks & SA_QUIRK_1FM) { 3469 error = 0; 3470 softc->flags |= SA_FLAG_EOM_PENDING; 3471 } else { 3472 error = EIO; 3473 } 3474 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 3475 if (softc->flags & SA_FLAG_FIXED) { 3476 error = -1; 3477 softc->flags |= SA_FLAG_EOF_PENDING; 3478 } 3479 /* 3480 * Unconditionally, if we detected a filemark on a read, 3481 * mark that we've run moved a file ahead. 3482 */ 3483 if (softc->fileno != (daddr_t) -1) { 3484 softc->fileno++; 3485 softc->blkno = 0; 3486 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 3487 } 3488 } 3489 } 3490 3491 /* 3492 * Incorrect Length usually applies to read, but can apply to writes. 3493 */ 3494 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 3495 if (info < 0) { 3496 xpt_print(csio->ccb_h.path, toobig, 3497 csio->dxfer_len - info); 3498 csio->resid = csio->dxfer_len; 3499 error = EIO; 3500 } else { 3501 csio->resid = resid; 3502 if (softc->flags & SA_FLAG_FIXED) { 3503 softc->flags |= SA_FLAG_EIO_PENDING; 3504 } 3505 /* 3506 * Bump the block number if we hadn't seen a filemark. 3507 * Do this independent of errors (we've moved anyway). 3508 */ 3509 if ((stream_valid == 0) || 3510 (stream_bits & SSD_FILEMARK) == 0) { 3511 if (softc->blkno != (daddr_t) -1) { 3512 softc->blkno++; 3513 csio->ccb_h.ccb_pflags |= 3514 SA_POSITION_UPDATED; 3515 } 3516 } 3517 } 3518 } 3519 3520 if (error <= 0) { 3521 /* 3522 * Unfreeze the queue if frozen as we're not returning anything 3523 * to our waiters that would indicate an I/O error has occurred 3524 * (yet). 3525 */ 3526 QFRLS(ccb); 3527 error = 0; 3528 } 3529 return (error); 3530} 3531 3532static int 3533sagetparams(struct cam_periph *periph, sa_params params_to_get, 3534 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 3535 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 3536 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 3537 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page, 3538 int dp_size, int prot_changeable) 3539{ 3540 union ccb *ccb; 3541 void *mode_buffer; 3542 struct scsi_mode_header_6 *mode_hdr; 3543 struct scsi_mode_blk_desc *mode_blk; 3544 int mode_buffer_len; 3545 struct sa_softc *softc; 3546 u_int8_t cpage; 3547 int error; 3548 cam_status status; 3549 3550 softc = (struct sa_softc *)periph->softc; 3551 ccb = cam_periph_getccb(periph, 1); 3552 if (softc->quirks & SA_QUIRK_NO_CPAGE) 3553 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3554 else 3555 cpage = SA_DATA_COMPRESSION_PAGE; 3556 3557retry: 3558 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 3559 3560 if (params_to_get & SA_PARAM_COMPRESSION) { 3561 if (softc->quirks & SA_QUIRK_NOCOMP) { 3562 *comp_supported = FALSE; 3563 params_to_get &= ~SA_PARAM_COMPRESSION; 3564 } else 3565 mode_buffer_len += sizeof (sa_comp_t); 3566 } 3567 3568 /* XXX Fix M_NOWAIT */ 3569 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 3570 if (mode_buffer == NULL) { 3571 xpt_release_ccb(ccb); 3572 return (ENOMEM); 3573 } 3574 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 3575 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3576 3577 /* it is safe to retry this */ 3578 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3579 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 3580 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 3581 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3582 3583 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3584 softc->device_stats); 3585 3586 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3587 3588 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 3589 /* 3590 * Hmm. Let's see if we can try another page... 3591 * If we've already done that, give up on compression 3592 * for this device and remember this for the future 3593 * and attempt the request without asking for compression 3594 * info. 3595 */ 3596 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3597 cpage = SA_DEVICE_CONFIGURATION_PAGE; 3598 goto retry; 3599 } 3600 softc->quirks |= SA_QUIRK_NOCOMP; 3601 free(mode_buffer, M_SCSISA); 3602 goto retry; 3603 } else if (status == CAM_SCSI_STATUS_ERROR) { 3604 /* Tell the user about the fatal error. */ 3605 scsi_sense_print(&ccb->csio); 3606 goto sagetparamsexit; 3607 } 3608 3609 /* 3610 * If the user only wants the compression information, and 3611 * the device doesn't send back the block descriptor, it's 3612 * no big deal. If the user wants more than just 3613 * compression, though, and the device doesn't pass back the 3614 * block descriptor, we need to send another mode sense to 3615 * get the block descriptor. 3616 */ 3617 if ((mode_hdr->blk_desc_len == 0) && 3618 (params_to_get & SA_PARAM_COMPRESSION) && 3619 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 3620 3621 /* 3622 * Decrease the mode buffer length by the size of 3623 * the compression page, to make sure the data 3624 * there doesn't get overwritten. 3625 */ 3626 mode_buffer_len -= sizeof (sa_comp_t); 3627 3628 /* 3629 * Now move the compression page that we presumably 3630 * got back down the memory chunk a little bit so 3631 * it doesn't get spammed. 3632 */ 3633 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 3634 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 3635 3636 /* 3637 * Now, we issue another mode sense and just ask 3638 * for the block descriptor, etc. 3639 */ 3640 3641 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3642 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 3643 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 3644 SCSIOP_TIMEOUT); 3645 3646 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3647 softc->device_stats); 3648 3649 if (error != 0) 3650 goto sagetparamsexit; 3651 } 3652 3653 if (params_to_get & SA_PARAM_BLOCKSIZE) 3654 *blocksize = scsi_3btoul(mode_blk->blklen); 3655 3656 if (params_to_get & SA_PARAM_NUMBLOCKS) 3657 *numblocks = scsi_3btoul(mode_blk->nblocks); 3658 3659 if (params_to_get & SA_PARAM_BUFF_MODE) 3660 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 3661 3662 if (params_to_get & SA_PARAM_DENSITY) 3663 *density = mode_blk->density; 3664 3665 if (params_to_get & SA_PARAM_WP) 3666 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 3667 3668 if (params_to_get & SA_PARAM_SPEED) 3669 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 3670 3671 if (params_to_get & SA_PARAM_COMPRESSION) { 3672 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 3673 if (cpage == SA_DATA_COMPRESSION_PAGE) { 3674 struct scsi_data_compression_page *cp = &ntcs->dcomp; 3675 *comp_supported = 3676 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 3677 *comp_enabled = 3678 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 3679 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 3680 } else { 3681 struct scsi_dev_conf_page *cp = &ntcs->dconf; 3682 /* 3683 * We don't really know whether this device supports 3684 * Data Compression if the algorithm field is 3685 * zero. Just say we do. 3686 */ 3687 *comp_supported = TRUE; 3688 *comp_enabled = 3689 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 3690 *comp_algorithm = cp->sel_comp_alg; 3691 } 3692 if (tcs != NULL) 3693 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 3694 } 3695 3696 if ((params_to_get & SA_PARAM_DENSITY_EXT) 3697 && (softc->scsi_rev >= SCSI_REV_SPC)) { 3698 int i; 3699 3700 for (i = 0; i < SA_DENSITY_TYPES; i++) { 3701 scsi_report_density_support(&ccb->csio, 3702 /*retries*/ 1, 3703 /*cbfcnp*/ sadone, 3704 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3705 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA, 3706 /*medium_type*/ softc->density_type_bits[i] & 3707 SRDS_MEDIUM_TYPE, 3708 /*data_ptr*/ softc->density_info[i], 3709 /*length*/ sizeof(softc->density_info[i]), 3710 /*sense_len*/ SSD_FULL_SIZE, 3711 /*timeout*/ REP_DENSITY_TIMEOUT); 3712 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3713 softc->device_stats); 3714 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3715 3716 /* 3717 * Some tape drives won't support this command at 3718 * all, but hopefully we'll minimize that with the 3719 * check for SPC or greater support above. If they 3720 * don't support the default report (neither the 3721 * MEDIA or MEDIUM_TYPE bits set), then there is 3722 * really no point in continuing on to look for 3723 * other reports. 3724 */ 3725 if ((error != 0) 3726 || (status != CAM_REQ_CMP)) { 3727 error = 0; 3728 softc->density_info_valid[i] = 0; 3729 if (softc->density_type_bits[i] == 0) 3730 break; 3731 else 3732 continue; 3733 } 3734 softc->density_info_valid[i] = ccb->csio.dxfer_len - 3735 ccb->csio.resid; 3736 } 3737 } 3738 3739 /* 3740 * Get logical block protection parameters if the drive supports it. 3741 */ 3742 if ((params_to_get & SA_PARAM_LBP) 3743 && (softc->flags & SA_FLAG_PROTECT_SUPP)) { 3744 struct scsi_mode_header_10 *mode10_hdr; 3745 struct scsi_control_data_prot_subpage *dp_page; 3746 struct scsi_mode_sense_10 *cdb; 3747 struct sa_prot_state *prot; 3748 int dp_len, returned_len; 3749 3750 if (dp_size == 0) 3751 dp_size = sizeof(*dp_page); 3752 3753 dp_len = sizeof(*mode10_hdr) + dp_size; 3754 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3755 if (mode10_hdr == NULL) { 3756 error = ENOMEM; 3757 goto sagetparamsexit; 3758 } 3759 3760 scsi_mode_sense_len(&ccb->csio, 3761 /*retries*/ 5, 3762 /*cbfcnp*/ sadone, 3763 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3764 /*dbd*/ TRUE, 3765 /*page_code*/ (prot_changeable == 0) ? 3766 SMS_PAGE_CTRL_CURRENT : 3767 SMS_PAGE_CTRL_CHANGEABLE, 3768 /*page*/ SMS_CONTROL_MODE_PAGE, 3769 /*param_buf*/ (uint8_t *)mode10_hdr, 3770 /*param_len*/ dp_len, 3771 /*minimum_cmd_size*/ 10, 3772 /*sense_len*/ SSD_FULL_SIZE, 3773 /*timeout*/ SCSIOP_TIMEOUT); 3774 /* 3775 * XXX KDM we need to be able to set the subpage in the 3776 * fill function. 3777 */ 3778 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes; 3779 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE; 3780 3781 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 3782 softc->device_stats); 3783 if (error != 0) { 3784 free(mode10_hdr, M_SCSISA); 3785 goto sagetparamsexit; 3786 } 3787 3788 status = ccb->ccb_h.status & CAM_STATUS_MASK; 3789 if (status != CAM_REQ_CMP) { 3790 error = EINVAL; 3791 free(mode10_hdr, M_SCSISA); 3792 goto sagetparamsexit; 3793 } 3794 3795 /* 3796 * The returned data length at least has to be long enough 3797 * for us to look at length in the mode page header. 3798 */ 3799 returned_len = ccb->csio.dxfer_len - ccb->csio.resid; 3800 if (returned_len < sizeof(mode10_hdr->data_length)) { 3801 error = EINVAL; 3802 free(mode10_hdr, M_SCSISA); 3803 goto sagetparamsexit; 3804 } 3805 3806 returned_len = min(returned_len, 3807 sizeof(mode10_hdr->data_length) + 3808 scsi_2btoul(mode10_hdr->data_length)); 3809 3810 dp_page = (struct scsi_control_data_prot_subpage *) 3811 &mode10_hdr[1]; 3812 3813 /* 3814 * We also have to have enough data to include the prot_bits 3815 * in the subpage. 3816 */ 3817 if (returned_len < (sizeof(*mode10_hdr) + 3818 __offsetof(struct scsi_control_data_prot_subpage, prot_bits) 3819 + sizeof(dp_page->prot_bits))) { 3820 error = EINVAL; 3821 free(mode10_hdr, M_SCSISA); 3822 goto sagetparamsexit; 3823 } 3824 3825 prot = &softc->prot_info.cur_prot_state; 3826 prot->prot_method = dp_page->prot_method; 3827 prot->pi_length = dp_page->pi_length & 3828 SA_CTRL_DP_PI_LENGTH_MASK; 3829 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0; 3830 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0; 3831 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0; 3832 prot->initialized = 1; 3833 3834 if (prot_page != NULL) 3835 bcopy(dp_page, prot_page, min(sizeof(*prot_page), 3836 sizeof(*dp_page))); 3837 3838 free(mode10_hdr, M_SCSISA); 3839 } 3840 3841 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3842 int idx; 3843 char *xyz = mode_buffer; 3844 xpt_print_path(periph->path); 3845 printf("Mode Sense Data="); 3846 for (idx = 0; idx < mode_buffer_len; idx++) 3847 printf(" 0x%02x", xyz[idx] & 0xff); 3848 printf("\n"); 3849 } 3850 3851sagetparamsexit: 3852 3853 xpt_release_ccb(ccb); 3854 free(mode_buffer, M_SCSISA); 3855 return (error); 3856} 3857 3858/* 3859 * Set protection information to the pending protection information stored 3860 * in the softc. 3861 */ 3862static int 3863sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot) 3864{ 3865 struct sa_softc *softc; 3866 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable; 3867 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable; 3868 union ccb *ccb; 3869 uint8_t current_speed; 3870 size_t dp_size, dp_page_length; 3871 int dp_len, buff_mode; 3872 int error; 3873 3874 softc = (struct sa_softc *)periph->softc; 3875 mode10_hdr = NULL; 3876 mode10_changeable = NULL; 3877 ccb = NULL; 3878 3879 /* 3880 * Start off with the size set to the actual length of the page 3881 * that we have defined. 3882 */ 3883 dp_size = sizeof(*dp_changeable); 3884 dp_page_length = dp_size - 3885 __offsetof(struct scsi_control_data_prot_subpage, prot_method); 3886 3887retry_length: 3888 3889 dp_len = sizeof(*mode10_changeable) + dp_size; 3890 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3891 if (mode10_changeable == NULL) { 3892 error = ENOMEM; 3893 goto bailout; 3894 } 3895 3896 dp_changeable = 3897 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1]; 3898 3899 /* 3900 * First get the data protection page changeable parameters mask. 3901 * We need to know which parameters the drive supports changing. 3902 * We also need to know what the drive claims that its page length 3903 * is. The reason is that IBM drives in particular are very picky 3904 * about the page length. They want it (the length set in the 3905 * page structure itself) to be 28 bytes, and they want the 3906 * parameter list length specified in the mode select header to be 3907 * 40 bytes. So, to work with IBM drives as well as any other tape 3908 * drive, find out what the drive claims the page length is, and 3909 * make sure that we match that. 3910 */ 3911 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3912 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3913 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1); 3914 if (error != 0) 3915 goto bailout; 3916 3917 if (scsi_2btoul(dp_changeable->length) > dp_page_length) { 3918 dp_page_length = scsi_2btoul(dp_changeable->length); 3919 dp_size = dp_page_length + 3920 __offsetof(struct scsi_control_data_prot_subpage, 3921 prot_method); 3922 free(mode10_changeable, M_SCSISA); 3923 mode10_changeable = NULL; 3924 goto retry_length; 3925 } 3926 3927 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO); 3928 if (mode10_hdr == NULL) { 3929 error = ENOMEM; 3930 goto bailout; 3931 } 3932 3933 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1]; 3934 3935 /* 3936 * Now grab the actual current settings in the page. 3937 */ 3938 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 3939 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 3940 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0); 3941 if (error != 0) 3942 goto bailout; 3943 3944 /* These two fields need to be 0 for MODE SELECT */ 3945 scsi_ulto2b(0, mode10_hdr->data_length); 3946 mode10_hdr->medium_type = 0; 3947 /* We are not including a block descriptor */ 3948 scsi_ulto2b(0, mode10_hdr->blk_desc_len); 3949 3950 mode10_hdr->dev_spec = current_speed; 3951 /* if set, set single-initiator buffering mode */ 3952 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 3953 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 3954 } 3955 3956 /* 3957 * For each field, make sure that the drive allows changing it 3958 * before bringing in the user's setting. 3959 */ 3960 if (dp_changeable->prot_method != 0) 3961 dp_page->prot_method = new_prot->prot_method; 3962 3963 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) { 3964 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK; 3965 dp_page->pi_length |= (new_prot->pi_length & 3966 SA_CTRL_DP_PI_LENGTH_MASK); 3967 } 3968 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) { 3969 if (new_prot->lbp_w) 3970 dp_page->prot_bits |= SA_CTRL_DP_LBP_W; 3971 else 3972 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W; 3973 } 3974 3975 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) { 3976 if (new_prot->lbp_r) 3977 dp_page->prot_bits |= SA_CTRL_DP_LBP_R; 3978 else 3979 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R; 3980 } 3981 3982 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) { 3983 if (new_prot->rbdp) 3984 dp_page->prot_bits |= SA_CTRL_DP_RBDP; 3985 else 3986 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP; 3987 } 3988 3989 ccb = cam_periph_getccb(periph, 1); 3990 3991 scsi_mode_select_len(&ccb->csio, 3992 /*retries*/ 5, 3993 /*cbfcnp*/ sadone, 3994 /*tag_action*/ MSG_SIMPLE_Q_TAG, 3995 /*scsi_page_fmt*/ TRUE, 3996 /*save_pages*/ FALSE, 3997 /*param_buf*/ (uint8_t *)mode10_hdr, 3998 /*param_len*/ dp_len, 3999 /*minimum_cmd_size*/ 10, 4000 /*sense_len*/ SSD_FULL_SIZE, 4001 /*timeout*/ SCSIOP_TIMEOUT); 4002 4003 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4004 if (error != 0) 4005 goto bailout; 4006 4007 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4008 error = EINVAL; 4009 goto bailout; 4010 } 4011 4012 /* 4013 * The operation was successful. We could just copy the settings 4014 * the user requested, but just in case the drive ignored some of 4015 * our settings, let's ask for status again. 4016 */ 4017 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP, 4018 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL, 4019 NULL, NULL, dp_page, dp_size, 0); 4020 4021bailout: 4022 if (ccb != NULL) 4023 xpt_release_ccb(ccb); 4024 free(mode10_hdr, M_SCSISA); 4025 free(mode10_changeable, M_SCSISA); 4026 return (error); 4027} 4028 4029/* 4030 * The purpose of this function is to set one of four different parameters 4031 * for a tape drive: 4032 * - blocksize 4033 * - density 4034 * - compression / compression algorithm 4035 * - buffering mode 4036 * 4037 * The assumption is that this will be called from saioctl(), and therefore 4038 * from a process context. Thus the waiting malloc calls below. If that 4039 * assumption ever changes, the malloc calls should be changed to be 4040 * NOWAIT mallocs. 4041 * 4042 * Any or all of the four parameters may be set when this function is 4043 * called. It should handle setting more than one parameter at once. 4044 */ 4045static int 4046sasetparams(struct cam_periph *periph, sa_params params_to_set, 4047 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 4048 u_int32_t sense_flags) 4049{ 4050 struct sa_softc *softc; 4051 u_int32_t current_blocksize; 4052 u_int32_t current_calg; 4053 u_int8_t current_density; 4054 u_int8_t current_speed; 4055 int comp_enabled, comp_supported; 4056 void *mode_buffer; 4057 int mode_buffer_len; 4058 struct scsi_mode_header_6 *mode_hdr; 4059 struct scsi_mode_blk_desc *mode_blk; 4060 sa_comp_t *ccomp, *cpage; 4061 int buff_mode; 4062 union ccb *ccb = NULL; 4063 int error; 4064 4065 softc = (struct sa_softc *)periph->softc; 4066 4067 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 4068 if (ccomp == NULL) 4069 return (ENOMEM); 4070 4071 /* 4072 * Since it doesn't make sense to set the number of blocks, or 4073 * write protection, we won't try to get the current value. We 4074 * always want to get the blocksize, so we can set it back to the 4075 * proper value. 4076 */ 4077 error = sagetparams(periph, 4078 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 4079 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 4080 ¤t_speed, &comp_supported, &comp_enabled, 4081 ¤t_calg, ccomp, NULL, 0, 0); 4082 4083 if (error != 0) { 4084 free(ccomp, M_SCSISA); 4085 return (error); 4086 } 4087 4088 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 4089 if (params_to_set & SA_PARAM_COMPRESSION) 4090 mode_buffer_len += sizeof (sa_comp_t); 4091 4092 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 4093 if (mode_buffer == NULL) { 4094 free(ccomp, M_SCSISA); 4095 return (ENOMEM); 4096 } 4097 4098 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 4099 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4100 4101 ccb = cam_periph_getccb(periph, 1); 4102 4103retry: 4104 4105 if (params_to_set & SA_PARAM_COMPRESSION) { 4106 if (mode_blk) { 4107 cpage = (sa_comp_t *)&mode_blk[1]; 4108 } else { 4109 cpage = (sa_comp_t *)&mode_hdr[1]; 4110 } 4111 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4112 cpage->hdr.pagecode &= ~0x80; 4113 } else 4114 cpage = NULL; 4115 4116 /* 4117 * If the caller wants us to set the blocksize, use the one they 4118 * pass in. Otherwise, use the blocksize we got back from the 4119 * mode select above. 4120 */ 4121 if (mode_blk) { 4122 if (params_to_set & SA_PARAM_BLOCKSIZE) 4123 scsi_ulto3b(blocksize, mode_blk->blklen); 4124 else 4125 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4126 4127 /* 4128 * Set density if requested, else preserve old density. 4129 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4130 * devices, else density we've latched up in our softc. 4131 */ 4132 if (params_to_set & SA_PARAM_DENSITY) { 4133 mode_blk->density = density; 4134 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4135 mode_blk->density = SCSI_SAME_DENSITY; 4136 } else { 4137 mode_blk->density = softc->media_density; 4138 } 4139 } 4140 4141 /* 4142 * For mode selects, these two fields must be zero. 4143 */ 4144 mode_hdr->data_length = 0; 4145 mode_hdr->medium_type = 0; 4146 4147 /* set the speed to the current value */ 4148 mode_hdr->dev_spec = current_speed; 4149 4150 /* if set, set single-initiator buffering mode */ 4151 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 4152 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 4153 } 4154 4155 if (mode_blk) 4156 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 4157 else 4158 mode_hdr->blk_desc_len = 0; 4159 4160 /* 4161 * First, if the user wants us to set the compression algorithm or 4162 * just turn compression on, check to make sure that this drive 4163 * supports compression. 4164 */ 4165 if (params_to_set & SA_PARAM_COMPRESSION) { 4166 /* 4167 * If the compression algorithm is 0, disable compression. 4168 * If the compression algorithm is non-zero, enable 4169 * compression and set the compression type to the 4170 * specified compression algorithm, unless the algorithm is 4171 * MT_COMP_ENABLE. In that case, we look at the 4172 * compression algorithm that is currently set and if it is 4173 * non-zero, we leave it as-is. If it is zero, and we have 4174 * saved a compression algorithm from a time when 4175 * compression was enabled before, set the compression to 4176 * the saved value. 4177 */ 4178 switch (ccomp->hdr.pagecode & ~0x80) { 4179 case SA_DEVICE_CONFIGURATION_PAGE: 4180 { 4181 struct scsi_dev_conf_page *dcp = &cpage->dconf; 4182 if (calg == 0) { 4183 dcp->sel_comp_alg = SA_COMP_NONE; 4184 break; 4185 } 4186 if (calg != MT_COMP_ENABLE) { 4187 dcp->sel_comp_alg = calg; 4188 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 4189 softc->saved_comp_algorithm != 0) { 4190 dcp->sel_comp_alg = softc->saved_comp_algorithm; 4191 } 4192 break; 4193 } 4194 case SA_DATA_COMPRESSION_PAGE: 4195 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 4196 struct scsi_data_compression_page *dcp = &cpage->dcomp; 4197 if (calg == 0) { 4198 /* 4199 * Disable compression, but leave the 4200 * decompression and the capability bit 4201 * alone. 4202 */ 4203 dcp->dce_and_dcc = SA_DCP_DCC; 4204 dcp->dde_and_red |= SA_DCP_DDE; 4205 break; 4206 } 4207 /* enable compression && decompression */ 4208 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 4209 dcp->dde_and_red |= SA_DCP_DDE; 4210 /* 4211 * If there, use compression algorithm from caller. 4212 * Otherwise, if there's a saved compression algorithm 4213 * and there is no current algorithm, use the saved 4214 * algorithm. Else parrot back what we got and hope 4215 * for the best. 4216 */ 4217 if (calg != MT_COMP_ENABLE) { 4218 scsi_ulto4b(calg, dcp->comp_algorithm); 4219 scsi_ulto4b(calg, dcp->decomp_algorithm); 4220 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 4221 softc->saved_comp_algorithm != 0) { 4222 scsi_ulto4b(softc->saved_comp_algorithm, 4223 dcp->comp_algorithm); 4224 scsi_ulto4b(softc->saved_comp_algorithm, 4225 dcp->decomp_algorithm); 4226 } 4227 break; 4228 } 4229 /* 4230 * Compression does not appear to be supported- 4231 * at least via the DATA COMPRESSION page. It 4232 * would be too much to ask us to believe that 4233 * the page itself is supported, but incorrectly 4234 * reports an ability to manipulate data compression, 4235 * so we'll assume that this device doesn't support 4236 * compression. We can just fall through for that. 4237 */ 4238 /* FALLTHROUGH */ 4239 default: 4240 /* 4241 * The drive doesn't seem to support compression, 4242 * so turn off the set compression bit. 4243 */ 4244 params_to_set &= ~SA_PARAM_COMPRESSION; 4245 xpt_print(periph->path, 4246 "device does not seem to support compression\n"); 4247 4248 /* 4249 * If that was the only thing the user wanted us to set, 4250 * clean up allocated resources and return with 4251 * 'operation not supported'. 4252 */ 4253 if (params_to_set == SA_PARAM_NONE) { 4254 free(mode_buffer, M_SCSISA); 4255 xpt_release_ccb(ccb); 4256 return (ENODEV); 4257 } 4258 4259 /* 4260 * That wasn't the only thing the user wanted us to set. 4261 * So, decrease the stated mode buffer length by the 4262 * size of the compression mode page. 4263 */ 4264 mode_buffer_len -= sizeof(sa_comp_t); 4265 } 4266 } 4267 4268 /* It is safe to retry this operation */ 4269 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 4270 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 4271 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4272 4273 error = cam_periph_runccb(ccb, saerror, 0, 4274 sense_flags, softc->device_stats); 4275 4276 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4277 int idx; 4278 char *xyz = mode_buffer; 4279 xpt_print_path(periph->path); 4280 printf("Err%d, Mode Select Data=", error); 4281 for (idx = 0; idx < mode_buffer_len; idx++) 4282 printf(" 0x%02x", xyz[idx] & 0xff); 4283 printf("\n"); 4284 } 4285 4286 4287 if (error) { 4288 /* 4289 * If we can, try without setting density/blocksize. 4290 */ 4291 if (mode_blk) { 4292 if ((params_to_set & 4293 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 4294 mode_blk = NULL; 4295 goto retry; 4296 } 4297 } else { 4298 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 4299 cpage = (sa_comp_t *)&mode_blk[1]; 4300 } 4301 4302 /* 4303 * If we were setting the blocksize, and that failed, we 4304 * want to set it to its original value. If we weren't 4305 * setting the blocksize, we don't want to change it. 4306 */ 4307 scsi_ulto3b(current_blocksize, mode_blk->blklen); 4308 4309 /* 4310 * Set density if requested, else preserve old density. 4311 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 4312 * devices, else density we've latched up in our softc. 4313 */ 4314 if (params_to_set & SA_PARAM_DENSITY) { 4315 mode_blk->density = current_density; 4316 } else if (softc->scsi_rev > SCSI_REV_CCS) { 4317 mode_blk->density = SCSI_SAME_DENSITY; 4318 } else { 4319 mode_blk->density = softc->media_density; 4320 } 4321 4322 if (params_to_set & SA_PARAM_COMPRESSION) 4323 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 4324 4325 /* 4326 * The retry count is the only CCB field that might have been 4327 * changed that we care about, so reset it back to 1. 4328 */ 4329 ccb->ccb_h.retry_count = 1; 4330 cam_periph_runccb(ccb, saerror, 0, sense_flags, 4331 softc->device_stats); 4332 } 4333 4334 xpt_release_ccb(ccb); 4335 4336 if (ccomp != NULL) 4337 free(ccomp, M_SCSISA); 4338 4339 if (params_to_set & SA_PARAM_COMPRESSION) { 4340 if (error) { 4341 softc->flags &= ~SA_FLAG_COMP_ENABLED; 4342 /* 4343 * Even if we get an error setting compression, 4344 * do not say that we don't support it. We could 4345 * have been wrong, or it may be media specific. 4346 * softc->flags &= ~SA_FLAG_COMP_SUPP; 4347 */ 4348 softc->saved_comp_algorithm = softc->comp_algorithm; 4349 softc->comp_algorithm = 0; 4350 } else { 4351 softc->flags |= SA_FLAG_COMP_ENABLED; 4352 softc->comp_algorithm = calg; 4353 } 4354 } 4355 4356 free(mode_buffer, M_SCSISA); 4357 return (error); 4358} 4359 4360static int 4361saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb, 4362 struct mtextget *g) 4363{ 4364 int indent, error; 4365 char tmpstr[80]; 4366 struct sa_softc *softc; 4367 int tmpint; 4368 uint32_t maxio_tmp; 4369 struct ccb_getdev cgd; 4370 4371 softc = (struct sa_softc *)periph->softc; 4372 4373 error = 0; 4374 4375 error = sagetparams_common(dev, periph); 4376 if (error) 4377 goto extget_bailout; 4378 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) 4379 sagetpos(periph); 4380 4381 indent = 0; 4382 SASBADDNODE(sb, indent, mtextget); 4383 /* 4384 * Basic CAM peripheral information. 4385 */ 4386 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name, 4387 strlen(periph->periph_name) + 1); 4388 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number); 4389 xpt_setup_ccb(&cgd.ccb_h, 4390 periph->path, 4391 CAM_PRIORITY_NORMAL); 4392 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 4393 xpt_action((union ccb *)&cgd); 4394 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 4395 g->status = MT_EXT_GET_ERROR; 4396 snprintf(g->error_str, sizeof(g->error_str), 4397 "Error %#x returned for XPT_GDEV_TYPE CCB", 4398 cgd.ccb_h.status); 4399 goto extget_bailout; 4400 } 4401 4402 cam_strvis(tmpstr, cgd.inq_data.vendor, 4403 sizeof(cgd.inq_data.vendor), sizeof(tmpstr)); 4404 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor, 4405 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID"); 4406 4407 cam_strvis(tmpstr, cgd.inq_data.product, 4408 sizeof(cgd.inq_data.product), sizeof(tmpstr)); 4409 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product, 4410 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID"); 4411 4412 cam_strvis(tmpstr, cgd.inq_data.revision, 4413 sizeof(cgd.inq_data.revision), sizeof(tmpstr)); 4414 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision, 4415 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision"); 4416 4417 if (cgd.serial_num_len > 0) { 4418 char *tmpstr2; 4419 size_t ts2_len; 4420 int ts2_malloc; 4421 4422 ts2_len = 0; 4423 4424 if (cgd.serial_num_len > sizeof(tmpstr)) { 4425 ts2_len = cgd.serial_num_len + 1; 4426 ts2_malloc = 1; 4427 tmpstr2 = malloc(ts2_len, M_SCSISA, M_WAITOK | M_ZERO); 4428 } else { 4429 ts2_len = sizeof(tmpstr); 4430 ts2_malloc = 0; 4431 tmpstr2 = tmpstr; 4432 } 4433 4434 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len, 4435 ts2_len); 4436 4437 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num, 4438 (ssize_t)cgd.serial_num_len + 1, "Serial Number"); 4439 if (ts2_malloc != 0) 4440 free(tmpstr2, M_SCSISA); 4441 } else { 4442 /* 4443 * We return a serial_num element in any case, but it will 4444 * be empty if the device has no serial number. 4445 */ 4446 tmpstr[0] = '\0'; 4447 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num, 4448 (ssize_t)0, "Serial Number"); 4449 } 4450 4451 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio, 4452 "Maximum I/O size allowed by driver and controller"); 4453 4454 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio, 4455 "Maximum I/O size reported by controller"); 4456 4457 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk, 4458 "Maximum block size supported by tape drive and media"); 4459 4460 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk, 4461 "Minimum block size supported by tape drive and media"); 4462 4463 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran, 4464 "Block granularity supported by tape drive and media"); 4465 4466 maxio_tmp = min(softc->max_blk, softc->maxio); 4467 4468 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize, 4469 "Maximum possible I/O size"); 4470 4471 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d, 4472 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block"); 4473 4474 /* 4475 * XXX KDM include SIM, bus, target, LUN? 4476 */ 4477 if (softc->flags & SA_FLAG_COMP_UNSUPP) 4478 tmpint = 0; 4479 else 4480 tmpint = 1; 4481 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported, 4482 "Set to 1 if compression is supported, 0 if not"); 4483 if (softc->flags & SA_FLAG_COMP_ENABLED) 4484 tmpint = 1; 4485 else 4486 tmpint = 0; 4487 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled, 4488 "Set to 1 if compression is enabled, 0 if not"); 4489 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u, 4490 compression_algorithm, "Numeric compression algorithm"); 4491 4492 safillprot(softc, &indent, sb); 4493 4494 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u, 4495 media_blocksize, "Block size reported by drive or set by user"); 4496 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd, 4497 calculated_fileno, "Calculated file number, -1 if unknown"); 4498 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd, 4499 calculated_rel_blkno, "Calculated block number relative to file, " 4500 "set to -1 if unknown"); 4501 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd, 4502 reported_fileno, "File number reported by drive, -1 if unknown"); 4503 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd, 4504 reported_blkno, "Block number relative to BOP/BOT reported by " 4505 "drive, -1 if unknown"); 4506 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd, 4507 partition, "Current partition number, 0 is the default"); 4508 SASBADDINTDESC(sb, indent, softc->bop, %d, bop, 4509 "Set to 1 if drive is at the beginning of partition/tape, 0 if " 4510 "not, -1 if unknown"); 4511 SASBADDINTDESC(sb, indent, softc->eop, %d, eop, 4512 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown"); 4513 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew, 4514 "Set to 1 if drive is past programmable early warning, 0 if not, " 4515 "-1 if unknown"); 4516 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd, 4517 residual, "Residual for the last I/O"); 4518 /* 4519 * XXX KDM should we send a string with the current driver 4520 * status already decoded instead of a numeric value? 4521 */ 4522 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg, 4523 "Current state of the driver"); 4524 4525 safilldensitysb(softc, &indent, sb); 4526 4527 SASBENDNODE(sb, indent, mtextget); 4528 4529extget_bailout: 4530 4531 return (error); 4532} 4533 4534static int 4535saparamget(struct sa_softc *softc, struct sbuf *sb) 4536{ 4537 int indent; 4538 4539 indent = 0; 4540 SASBADDNODE(sb, indent, mtparamget); 4541 SASBADDINTDESC(sb, indent, softc->sili, %d, sili, 4542 "Suppress an error on underlength variable reads"); 4543 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn, 4544 "Return an error to warn that end of tape is approaching"); 4545 safillprot(softc, &indent, sb); 4546 SASBENDNODE(sb, indent, mtparamget); 4547 4548 return (0); 4549} 4550 4551static void 4552saprevent(struct cam_periph *periph, int action) 4553{ 4554 struct sa_softc *softc; 4555 union ccb *ccb; 4556 int error, sf; 4557 4558 softc = (struct sa_softc *)periph->softc; 4559 4560 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 4561 return; 4562 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 4563 return; 4564 4565 /* 4566 * We can be quiet about illegal requests. 4567 */ 4568 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 4569 sf = 0; 4570 } else 4571 sf = SF_QUIET_IR; 4572 4573 ccb = cam_periph_getccb(periph, 1); 4574 4575 /* It is safe to retry this operation */ 4576 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 4577 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4578 4579 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 4580 if (error == 0) { 4581 if (action == PR_ALLOW) 4582 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 4583 else 4584 softc->flags |= SA_FLAG_TAPE_LOCKED; 4585 } 4586 4587 xpt_release_ccb(ccb); 4588} 4589 4590static int 4591sarewind(struct cam_periph *periph) 4592{ 4593 union ccb *ccb; 4594 struct sa_softc *softc; 4595 int error; 4596 4597 softc = (struct sa_softc *)periph->softc; 4598 4599 ccb = cam_periph_getccb(periph, 1); 4600 4601 /* It is safe to retry this operation */ 4602 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 4603 SSD_FULL_SIZE, REWIND_TIMEOUT); 4604 4605 softc->dsreg = MTIO_DSREG_REW; 4606 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4607 softc->dsreg = MTIO_DSREG_REST; 4608 4609 xpt_release_ccb(ccb); 4610 if (error == 0) { 4611 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 4612 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0; 4613 } else { 4614 softc->fileno = softc->blkno = (daddr_t) -1; 4615 softc->partition = (daddr_t) -1; 4616 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4617 } 4618 return (error); 4619} 4620 4621static int 4622saspace(struct cam_periph *periph, int count, scsi_space_code code) 4623{ 4624 union ccb *ccb; 4625 struct sa_softc *softc; 4626 int error; 4627 4628 softc = (struct sa_softc *)periph->softc; 4629 4630 ccb = cam_periph_getccb(periph, 1); 4631 4632 /* This cannot be retried */ 4633 4634 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 4635 SSD_FULL_SIZE, SPACE_TIMEOUT); 4636 4637 /* 4638 * Clear residual because we will be using it. 4639 */ 4640 softc->last_ctl_resid = 0; 4641 4642 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 4643 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4644 softc->dsreg = MTIO_DSREG_REST; 4645 4646 xpt_release_ccb(ccb); 4647 4648 /* 4649 * If a spacing operation has failed, we need to invalidate 4650 * this mount. 4651 * 4652 * If the spacing operation was setmarks or to end of recorded data, 4653 * we no longer know our relative position. 4654 * 4655 * If the spacing operations was spacing files in reverse, we 4656 * take account of the residual, but still check against less 4657 * than zero- if we've gone negative, we must have hit BOT. 4658 * 4659 * If the spacing operations was spacing records in reverse and 4660 * we have a residual, we've either hit BOT or hit a filemark. 4661 * In the former case, we know our new record number (0). In 4662 * the latter case, we have absolutely no idea what the real 4663 * record number is- we've stopped between the end of the last 4664 * record in the previous file and the filemark that stopped 4665 * our spacing backwards. 4666 */ 4667 if (error) { 4668 softc->fileno = softc->blkno = (daddr_t) -1; 4669 softc->rep_blkno = softc->partition = (daddr_t) -1; 4670 softc->rep_fileno = (daddr_t) -1; 4671 } else if (code == SS_SETMARKS || code == SS_EOD) { 4672 softc->fileno = softc->blkno = (daddr_t) -1; 4673 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 4674 softc->fileno += (count - softc->last_ctl_resid); 4675 if (softc->fileno < 0) /* we must of hit BOT */ 4676 softc->fileno = 0; 4677 softc->blkno = 0; 4678 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 4679 softc->blkno += (count - softc->last_ctl_resid); 4680 if (count < 0) { 4681 if (softc->last_ctl_resid || softc->blkno < 0) { 4682 if (softc->fileno == 0) { 4683 softc->blkno = 0; 4684 } else { 4685 softc->blkno = (daddr_t) -1; 4686 } 4687 } 4688 } 4689 } 4690 if (error == 0) 4691 sagetpos(periph); 4692 4693 return (error); 4694} 4695 4696static int 4697sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed) 4698{ 4699 union ccb *ccb; 4700 struct sa_softc *softc; 4701 int error, nwm = 0; 4702 4703 softc = (struct sa_softc *)periph->softc; 4704 if (softc->open_rdonly) 4705 return (EBADF); 4706 4707 ccb = cam_periph_getccb(periph, 1); 4708 /* 4709 * Clear residual because we will be using it. 4710 */ 4711 softc->last_ctl_resid = 0; 4712 4713 softc->dsreg = MTIO_DSREG_FMK; 4714 /* this *must* not be retried */ 4715 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 4716 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 4717 softc->dsreg = MTIO_DSREG_REST; 4718 4719 4720 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4721 4722 if (error == 0 && nmarks) { 4723 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4724 nwm = nmarks - softc->last_ctl_resid; 4725 softc->filemarks += nwm; 4726 } 4727 4728 xpt_release_ccb(ccb); 4729 4730 /* 4731 * Update relative positions (if we're doing that). 4732 */ 4733 if (error) { 4734 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1; 4735 } else if (softc->fileno != (daddr_t) -1) { 4736 softc->fileno += nwm; 4737 softc->blkno = 0; 4738 } 4739 4740 /* 4741 * Ask the tape drive for position information. 4742 */ 4743 sagetpos(periph); 4744 4745 /* 4746 * If we got valid position information, since we just wrote a file 4747 * mark, we know we're at the file mark and block 0 after that 4748 * filemark. 4749 */ 4750 if (softc->rep_fileno != (daddr_t) -1) { 4751 softc->fileno = softc->rep_fileno; 4752 softc->blkno = 0; 4753 } 4754 4755 return (error); 4756} 4757 4758static int 4759sagetpos(struct cam_periph *periph) 4760{ 4761 union ccb *ccb; 4762 struct scsi_tape_position_long_data long_pos; 4763 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4764 int error; 4765 4766 if (softc->quirks & SA_QUIRK_NO_LONG_POS) { 4767 softc->rep_fileno = (daddr_t) -1; 4768 softc->rep_blkno = (daddr_t) -1; 4769 softc->bop = softc->eop = softc->bpew = -1; 4770 return (EOPNOTSUPP); 4771 } 4772 4773 bzero(&long_pos, sizeof(long_pos)); 4774 4775 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 4776 scsi_read_position_10(&ccb->csio, 4777 /*retries*/ 1, 4778 /*cbfcnp*/ sadone, 4779 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4780 /*service_action*/ SA_RPOS_LONG_FORM, 4781 /*data_ptr*/ (uint8_t *)&long_pos, 4782 /*length*/ sizeof(long_pos), 4783 /*sense_len*/ SSD_FULL_SIZE, 4784 /*timeout*/ SCSIOP_TIMEOUT); 4785 4786 softc->dsreg = MTIO_DSREG_RBSY; 4787 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 4788 softc->device_stats); 4789 softc->dsreg = MTIO_DSREG_REST; 4790 4791 if (error == 0) { 4792 if (long_pos.flags & SA_RPOS_LONG_MPU) { 4793 /* 4794 * If the drive doesn't know what file mark it is 4795 * on, our calculated filemark isn't going to be 4796 * accurate either. 4797 */ 4798 softc->fileno = (daddr_t) -1; 4799 softc->rep_fileno = (daddr_t) -1; 4800 } else { 4801 softc->fileno = softc->rep_fileno = 4802 scsi_8btou64(long_pos.logical_file_num); 4803 } 4804 4805 if (long_pos.flags & SA_RPOS_LONG_LONU) { 4806 softc->partition = (daddr_t) -1; 4807 softc->rep_blkno = (daddr_t) -1; 4808 /* 4809 * If the tape drive doesn't know its block 4810 * position, we can't claim to know it either. 4811 */ 4812 softc->blkno = (daddr_t) -1; 4813 } else { 4814 softc->partition = scsi_4btoul(long_pos.partition); 4815 softc->rep_blkno = 4816 scsi_8btou64(long_pos.logical_object_num); 4817 } 4818 if (long_pos.flags & SA_RPOS_LONG_BOP) 4819 softc->bop = 1; 4820 else 4821 softc->bop = 0; 4822 4823 if (long_pos.flags & SA_RPOS_LONG_EOP) 4824 softc->eop = 1; 4825 else 4826 softc->eop = 0; 4827 4828 if (long_pos.flags & SA_RPOS_LONG_BPEW) 4829 softc->bpew = 1; 4830 else 4831 softc->bpew = 0; 4832 } else if (error == EINVAL) { 4833 /* 4834 * If this drive returned an invalid-request type error, 4835 * then it likely doesn't support the long form report. 4836 */ 4837 softc->quirks |= SA_QUIRK_NO_LONG_POS; 4838 } 4839 4840 if (error != 0) { 4841 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 4842 softc->partition = (daddr_t) -1; 4843 softc->bop = softc->eop = softc->bpew = -1; 4844 } 4845 4846 xpt_release_ccb(ccb); 4847 4848 return (error); 4849} 4850 4851static int 4852sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 4853{ 4854 struct scsi_tape_position_data loc; 4855 union ccb *ccb; 4856 struct sa_softc *softc = (struct sa_softc *)periph->softc; 4857 int error; 4858 4859 /* 4860 * We try and flush any buffered writes here if we were writing 4861 * and we're trying to get hardware block position. It eats 4862 * up performance substantially, but I'm wary of drive firmware. 4863 * 4864 * I think that *logical* block position is probably okay- 4865 * but hardware block position might have to wait for data 4866 * to hit media to be valid. Caveat Emptor. 4867 */ 4868 4869 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 4870 error = sawritefilemarks(periph, 0, 0, 0); 4871 if (error && error != EACCES) 4872 return (error); 4873 } 4874 4875 ccb = cam_periph_getccb(periph, 1); 4876 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 4877 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 4878 softc->dsreg = MTIO_DSREG_RBSY; 4879 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4880 softc->dsreg = MTIO_DSREG_REST; 4881 4882 if (error == 0) { 4883 if (loc.flags & SA_RPOS_UNCERTAIN) { 4884 error = EINVAL; /* nothing is certain */ 4885 } else { 4886 *blkptr = scsi_4btoul(loc.firstblk); 4887 } 4888 } 4889 4890 xpt_release_ccb(ccb); 4891 return (error); 4892} 4893 4894static int 4895sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info) 4896{ 4897 union ccb *ccb; 4898 struct sa_softc *softc; 4899 int locate16; 4900 int immed, cp; 4901 int error; 4902 4903 /* 4904 * We used to try and flush any buffered writes here. 4905 * Now we push this onto user applications to either 4906 * flush the pending writes themselves (via a zero count 4907 * WRITE FILEMARKS command) or they can trust their tape 4908 * drive to do this correctly for them. 4909 */ 4910 4911 softc = (struct sa_softc *)periph->softc; 4912 ccb = cam_periph_getccb(periph, 1); 4913 4914 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0; 4915 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0; 4916 4917 /* 4918 * Determine whether we have to use LOCATE or LOCATE16. The hard 4919 * bit is only possible with LOCATE, but the new ioctls do not 4920 * allow setting that bit. So we can't get into the situation of 4921 * having the hard bit set with a block address that is larger than 4922 * 32-bits. 4923 */ 4924 if (hard != 0) 4925 locate16 = 0; 4926 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT) 4927 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT) 4928 || (locate_info->logical_id > SA_SPOS_MAX_BLK)) 4929 locate16 = 1; 4930 else 4931 locate16 = 0; 4932 4933 if (locate16 != 0) { 4934 scsi_locate_16(&ccb->csio, 4935 /*retries*/ 1, 4936 /*cbfcnp*/ sadone, 4937 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4938 /*immed*/ immed, 4939 /*cp*/ cp, 4940 /*dest_type*/ locate_info->dest_type, 4941 /*bam*/ locate_info->block_address_mode, 4942 /*partition*/ locate_info->partition, 4943 /*logical_id*/ locate_info->logical_id, 4944 /*sense_len*/ SSD_FULL_SIZE, 4945 /*timeout*/ SPACE_TIMEOUT); 4946 } else { 4947 uint32_t blk_pointer; 4948 4949 blk_pointer = locate_info->logical_id; 4950 4951 scsi_locate_10(&ccb->csio, 4952 /*retries*/ 1, 4953 /*cbfcnp*/ sadone, 4954 /*tag_action*/ MSG_SIMPLE_Q_TAG, 4955 /*immed*/ immed, 4956 /*cp*/ cp, 4957 /*hard*/ hard, 4958 /*partition*/ locate_info->partition, 4959 /*block_address*/ locate_info->logical_id, 4960 /*sense_len*/ SSD_FULL_SIZE, 4961 /*timeout*/ SPACE_TIMEOUT); 4962 } 4963 4964 softc->dsreg = MTIO_DSREG_POS; 4965 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 4966 softc->dsreg = MTIO_DSREG_REST; 4967 xpt_release_ccb(ccb); 4968 4969 /* 4970 * We assume the calculated file and block numbers are unknown 4971 * unless we have enough information to populate them. 4972 */ 4973 softc->fileno = softc->blkno = (daddr_t) -1; 4974 4975 /* 4976 * If the user requested changing the partition and the request 4977 * succeeded, note the partition. 4978 */ 4979 if ((error == 0) 4980 && (cp != 0)) 4981 softc->partition = locate_info->partition; 4982 else 4983 softc->partition = (daddr_t) -1; 4984 4985 if (error == 0) { 4986 switch (locate_info->dest_type) { 4987 case MT_LOCATE_DEST_FILE: 4988 /* 4989 * This is the only case where we can reliably 4990 * calculate the file and block numbers. 4991 */ 4992 softc->fileno = locate_info->logical_id; 4993 softc->blkno = 0; 4994 break; 4995 case MT_LOCATE_DEST_OBJECT: 4996 case MT_LOCATE_DEST_SET: 4997 case MT_LOCATE_DEST_EOD: 4998 default: 4999 break; 5000 } 5001 } 5002 5003 /* 5004 * Ask the drive for current position information. 5005 */ 5006 sagetpos(periph); 5007 5008 return (error); 5009} 5010 5011static int 5012saretension(struct cam_periph *periph) 5013{ 5014 union ccb *ccb; 5015 struct sa_softc *softc; 5016 int error; 5017 5018 softc = (struct sa_softc *)periph->softc; 5019 5020 ccb = cam_periph_getccb(periph, 1); 5021 5022 /* It is safe to retry this operation */ 5023 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5024 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 5025 5026 softc->dsreg = MTIO_DSREG_TEN; 5027 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5028 softc->dsreg = MTIO_DSREG_REST; 5029 5030 xpt_release_ccb(ccb); 5031 if (error == 0) { 5032 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5033 sagetpos(periph); 5034 } else 5035 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5036 return (error); 5037} 5038 5039static int 5040sareservereleaseunit(struct cam_periph *periph, int reserve) 5041{ 5042 union ccb *ccb; 5043 struct sa_softc *softc; 5044 int error; 5045 5046 softc = (struct sa_softc *)periph->softc; 5047 ccb = cam_periph_getccb(periph, 1); 5048 5049 /* It is safe to retry this operation */ 5050 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 5051 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 5052 softc->dsreg = MTIO_DSREG_RBSY; 5053 error = cam_periph_runccb(ccb, saerror, 0, 5054 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 5055 softc->dsreg = MTIO_DSREG_REST; 5056 xpt_release_ccb(ccb); 5057 5058 /* 5059 * If the error was Illegal Request, then the device doesn't support 5060 * RESERVE/RELEASE. This is not an error. 5061 */ 5062 if (error == EINVAL) { 5063 error = 0; 5064 } 5065 5066 return (error); 5067} 5068 5069static int 5070saloadunload(struct cam_periph *periph, int load) 5071{ 5072 union ccb *ccb; 5073 struct sa_softc *softc; 5074 int error; 5075 5076 softc = (struct sa_softc *)periph->softc; 5077 5078 ccb = cam_periph_getccb(periph, 1); 5079 5080 /* It is safe to retry this operation */ 5081 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 5082 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 5083 5084 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 5085 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5086 softc->dsreg = MTIO_DSREG_REST; 5087 xpt_release_ccb(ccb); 5088 5089 if (error || load == 0) { 5090 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1; 5091 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1; 5092 } else if (error == 0) { 5093 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0; 5094 sagetpos(periph); 5095 } 5096 return (error); 5097} 5098 5099static int 5100saerase(struct cam_periph *periph, int longerase) 5101{ 5102 5103 union ccb *ccb; 5104 struct sa_softc *softc; 5105 int error; 5106 5107 softc = (struct sa_softc *)periph->softc; 5108 if (softc->open_rdonly) 5109 return (EBADF); 5110 5111 ccb = cam_periph_getccb(periph, 1); 5112 5113 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 5114 SSD_FULL_SIZE, ERASE_TIMEOUT); 5115 5116 softc->dsreg = MTIO_DSREG_ZER; 5117 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 5118 softc->dsreg = MTIO_DSREG_REST; 5119 5120 xpt_release_ccb(ccb); 5121 return (error); 5122} 5123 5124/* 5125 * Fill an sbuf with density data in XML format. This particular macro 5126 * works for multi-byte integer fields. 5127 * 5128 * Note that 1 byte fields aren't supported here. The reason is that the 5129 * compiler does not evaluate the sizeof(), and assumes that any of the 5130 * sizes are possible for a given field. So passing in a multi-byte 5131 * field will result in a warning that the assignment makes an integer 5132 * from a pointer without a cast, if there is an assignment in the 1 byte 5133 * case. 5134 */ 5135#define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \ 5136 len_to_go, cur_offset, desc){ \ 5137 size_t cur_field_len; \ 5138 \ 5139 cur_field_len = sizeof(dens_data->field); \ 5140 if (desc_remain < cur_field_len) { \ 5141 len_to_go -= desc_remain; \ 5142 cur_offset += desc_remain; \ 5143 continue; \ 5144 } \ 5145 len_to_go -= cur_field_len; \ 5146 cur_offset += cur_field_len; \ 5147 desc_remain -= cur_field_len; \ 5148 \ 5149 switch (sizeof(dens_data->field)) { \ 5150 case 1: \ 5151 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \ 5152 "field width for SAFILLDENSFIELD")); \ 5153 break; \ 5154 case 2: \ 5155 SASBADDUINTDESC(sb, indent, \ 5156 scsi_2btoul(dens_data->field), %u, field, desc); \ 5157 break; \ 5158 case 3: \ 5159 SASBADDUINTDESC(sb, indent, \ 5160 scsi_3btoul(dens_data->field), %u, field, desc); \ 5161 break; \ 5162 case 4: \ 5163 SASBADDUINTDESC(sb, indent, \ 5164 scsi_4btoul(dens_data->field), %u, field, desc); \ 5165 break; \ 5166 case 8: \ 5167 SASBADDUINTDESC(sb, indent, \ 5168 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \ 5169 field, desc); \ 5170 break; \ 5171 default: \ 5172 break; \ 5173 } \ 5174}; 5175/* 5176 * Fill an sbuf with density data in XML format. This particular macro 5177 * works for strings. 5178 */ 5179#define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \ 5180 len_to_go, cur_offset, desc){ \ 5181 size_t cur_field_len; \ 5182 char tmpstr[32]; \ 5183 \ 5184 cur_field_len = sizeof(dens_data->field); \ 5185 if (desc_remain < cur_field_len) { \ 5186 len_to_go -= desc_remain; \ 5187 cur_offset += desc_remain; \ 5188 continue; \ 5189 } \ 5190 len_to_go -= cur_field_len; \ 5191 cur_offset += cur_field_len; \ 5192 desc_remain -= cur_field_len; \ 5193 \ 5194 cam_strvis(tmpstr, dens_data->field, \ 5195 sizeof(dens_data->field), sizeof(tmpstr)); \ 5196 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \ 5197 strlen(tmpstr) + 1, desc); \ 5198}; 5199 5200/* 5201 * Fill an sbuf with density data descriptors. 5202 */ 5203static void 5204safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len, 5205 int is_density) 5206{ 5207 struct scsi_density_hdr *hdr; 5208 uint32_t hdr_len; 5209 int len_to_go, cur_offset; 5210 int length_offset; 5211 int num_reports, need_close; 5212 5213 /* 5214 * We need at least the header length. Note that this isn't an 5215 * error, not all tape drives will have every data type. 5216 */ 5217 if (buf_len < sizeof(*hdr)) 5218 goto bailout; 5219 5220 5221 hdr = (struct scsi_density_hdr *)buf; 5222 hdr_len = scsi_2btoul(hdr->length); 5223 len_to_go = min(buf_len - sizeof(*hdr), hdr_len); 5224 if (is_density) { 5225 length_offset = __offsetof(struct scsi_density_data, 5226 bits_per_mm); 5227 } else { 5228 length_offset = __offsetof(struct scsi_medium_type_data, 5229 num_density_codes); 5230 } 5231 cur_offset = sizeof(*hdr); 5232 5233 num_reports = 0; 5234 need_close = 0; 5235 5236 while (len_to_go > length_offset) { 5237 struct scsi_density_data *dens_data; 5238 struct scsi_medium_type_data *type_data; 5239 int desc_remain; 5240 size_t cur_field_len; 5241 5242 dens_data = NULL; 5243 type_data = NULL; 5244 5245 if (is_density) { 5246 dens_data =(struct scsi_density_data *)&buf[cur_offset]; 5247 if (dens_data->byte2 & SDD_DLV) 5248 desc_remain = scsi_2btoul(dens_data->length); 5249 else 5250 desc_remain = SDD_DEFAULT_LENGTH - 5251 length_offset; 5252 } else { 5253 type_data = (struct scsi_medium_type_data *) 5254 &buf[cur_offset]; 5255 desc_remain = scsi_2btoul(type_data->length); 5256 } 5257 5258 len_to_go -= length_offset; 5259 desc_remain = min(desc_remain, len_to_go); 5260 cur_offset += length_offset; 5261 5262 if (need_close != 0) { 5263 SASBENDNODE(sb, *indent, density_entry); 5264 } 5265 5266 SASBADDNODENUM(sb, *indent, density_entry, num_reports); 5267 num_reports++; 5268 need_close = 1; 5269 5270 if (is_density) { 5271 SASBADDUINTDESC(sb, *indent, 5272 dens_data->primary_density_code, %u, 5273 primary_density_code, "Primary Density Code"); 5274 SASBADDUINTDESC(sb, *indent, 5275 dens_data->secondary_density_code, %u, 5276 secondary_density_code, "Secondary Density Code"); 5277 SASBADDUINTDESC(sb, *indent, 5278 dens_data->byte2 & ~SDD_DLV, %#x, density_flags, 5279 "Density Flags"); 5280 5281 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm, 5282 desc_remain, len_to_go, cur_offset, "Bits per mm"); 5283 SAFILLDENSSB(dens_data, sb, *indent, media_width, 5284 desc_remain, len_to_go, cur_offset, "Media width"); 5285 SAFILLDENSSB(dens_data, sb, *indent, tracks, 5286 desc_remain, len_to_go, cur_offset, 5287 "Number of Tracks"); 5288 SAFILLDENSSB(dens_data, sb, *indent, capacity, 5289 desc_remain, len_to_go, cur_offset, "Capacity"); 5290 5291 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org, 5292 desc_remain, len_to_go, cur_offset, 5293 "Assigning Organization"); 5294 5295 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name, 5296 desc_remain, len_to_go, cur_offset, "Density Name"); 5297 5298 SAFILLDENSSBSTR(dens_data, sb, *indent, description, 5299 desc_remain, len_to_go, cur_offset, "Description"); 5300 } else { 5301 int i; 5302 5303 SASBADDUINTDESC(sb, *indent, type_data->medium_type, 5304 %u, medium_type, "Medium Type"); 5305 5306 cur_field_len = 5307 __offsetof(struct scsi_medium_type_data, 5308 media_width) - 5309 __offsetof(struct scsi_medium_type_data, 5310 num_density_codes); 5311 5312 if (desc_remain < cur_field_len) { 5313 len_to_go -= desc_remain; 5314 cur_offset += desc_remain; 5315 continue; 5316 } 5317 len_to_go -= cur_field_len; 5318 cur_offset += cur_field_len; 5319 desc_remain -= cur_field_len; 5320 5321 SASBADDINTDESC(sb, *indent, 5322 type_data->num_density_codes, %d, 5323 num_density_codes, "Number of Density Codes"); 5324 SASBADDNODE(sb, *indent, density_code_list); 5325 for (i = 0; i < type_data->num_density_codes; 5326 i++) { 5327 SASBADDUINTDESC(sb, *indent, 5328 type_data->primary_density_codes[i], %u, 5329 density_code, "Density Code"); 5330 } 5331 SASBENDNODE(sb, *indent, density_code_list); 5332 5333 SAFILLDENSSB(type_data, sb, *indent, media_width, 5334 desc_remain, len_to_go, cur_offset, 5335 "Media width"); 5336 SAFILLDENSSB(type_data, sb, *indent, medium_length, 5337 desc_remain, len_to_go, cur_offset, 5338 "Medium length"); 5339 5340 /* 5341 * Account for the two reserved bytes. 5342 */ 5343 cur_field_len = sizeof(type_data->reserved2); 5344 if (desc_remain < cur_field_len) { 5345 len_to_go -= desc_remain; 5346 cur_offset += desc_remain; 5347 continue; 5348 } 5349 len_to_go -= cur_field_len; 5350 cur_offset += cur_field_len; 5351 desc_remain -= cur_field_len; 5352 5353 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org, 5354 desc_remain, len_to_go, cur_offset, 5355 "Assigning Organization"); 5356 SAFILLDENSSBSTR(type_data, sb, *indent, 5357 medium_type_name, desc_remain, len_to_go, 5358 cur_offset, "Medium type name"); 5359 SAFILLDENSSBSTR(type_data, sb, *indent, description, 5360 desc_remain, len_to_go, cur_offset, "Description"); 5361 5362 } 5363 } 5364 if (need_close != 0) { 5365 SASBENDNODE(sb, *indent, density_entry); 5366 } 5367 5368bailout: 5369 return; 5370} 5371 5372/* 5373 * Fill an sbuf with density data information 5374 */ 5375static void 5376safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb) 5377{ 5378 int i, is_density; 5379 5380 SASBADDNODE(sb, *indent, mtdensity); 5381 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density, 5382 "Current Medium Density"); 5383 is_density = 0; 5384 for (i = 0; i < SA_DENSITY_TYPES; i++) { 5385 int tmpint; 5386 5387 if (softc->density_info_valid[i] == 0) 5388 continue; 5389 5390 SASBADDNODE(sb, *indent, density_report); 5391 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) { 5392 tmpint = 1; 5393 is_density = 0; 5394 } else { 5395 tmpint = 0; 5396 is_density = 1; 5397 } 5398 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report, 5399 "Medium type report"); 5400 5401 if (softc->density_type_bits[i] & SRDS_MEDIA) 5402 tmpint = 1; 5403 else 5404 tmpint = 0; 5405 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report, 5406 "Media report"); 5407 5408 safilldenstypesb(sb, indent, softc->density_info[i], 5409 softc->density_info_valid[i], is_density); 5410 SASBENDNODE(sb, *indent, density_report); 5411 } 5412 SASBENDNODE(sb, *indent, mtdensity); 5413} 5414 5415#endif /* _KERNEL */ 5416 5417/* 5418 * Read tape block limits command. 5419 */ 5420void 5421scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 5422 void (*cbfcnp)(struct cam_periph *, union ccb *), 5423 u_int8_t tag_action, 5424 struct scsi_read_block_limits_data *rlimit_buf, 5425 u_int8_t sense_len, u_int32_t timeout) 5426{ 5427 struct scsi_read_block_limits *scsi_cmd; 5428 5429 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5430 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 5431 sizeof(*scsi_cmd), timeout); 5432 5433 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 5434 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5435 scsi_cmd->opcode = READ_BLOCK_LIMITS; 5436} 5437 5438void 5439scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 5440 void (*cbfcnp)(struct cam_periph *, union ccb *), 5441 u_int8_t tag_action, int readop, int sli, 5442 int fixed, u_int32_t length, u_int8_t *data_ptr, 5443 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 5444{ 5445 struct scsi_sa_rw *scsi_cmd; 5446 int read; 5447 5448 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 5449 5450 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 5451 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 5452 scsi_cmd->sli_fixed = 0; 5453 if (sli && read) 5454 scsi_cmd->sli_fixed |= SAR_SLI; 5455 if (fixed) 5456 scsi_cmd->sli_fixed |= SARW_FIXED; 5457 scsi_ulto3b(length, scsi_cmd->length); 5458 scsi_cmd->control = 0; 5459 5460 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 5461 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 5462 tag_action, data_ptr, dxfer_len, sense_len, 5463 sizeof(*scsi_cmd), timeout); 5464} 5465 5466void 5467scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 5468 void (*cbfcnp)(struct cam_periph *, union ccb *), 5469 u_int8_t tag_action, int immediate, int eot, 5470 int reten, int load, u_int8_t sense_len, 5471 u_int32_t timeout) 5472{ 5473 struct scsi_load_unload *scsi_cmd; 5474 5475 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 5476 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5477 scsi_cmd->opcode = LOAD_UNLOAD; 5478 if (immediate) 5479 scsi_cmd->immediate = SLU_IMMED; 5480 if (eot) 5481 scsi_cmd->eot_reten_load |= SLU_EOT; 5482 if (reten) 5483 scsi_cmd->eot_reten_load |= SLU_RETEN; 5484 if (load) 5485 scsi_cmd->eot_reten_load |= SLU_LOAD; 5486 5487 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5488 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 5489} 5490 5491void 5492scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 5493 void (*cbfcnp)(struct cam_periph *, union ccb *), 5494 u_int8_t tag_action, int immediate, u_int8_t sense_len, 5495 u_int32_t timeout) 5496{ 5497 struct scsi_rewind *scsi_cmd; 5498 5499 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 5500 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5501 scsi_cmd->opcode = REWIND; 5502 if (immediate) 5503 scsi_cmd->immediate = SREW_IMMED; 5504 5505 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5506 0, sense_len, sizeof(*scsi_cmd), timeout); 5507} 5508 5509void 5510scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 5511 void (*cbfcnp)(struct cam_periph *, union ccb *), 5512 u_int8_t tag_action, scsi_space_code code, 5513 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 5514{ 5515 struct scsi_space *scsi_cmd; 5516 5517 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 5518 scsi_cmd->opcode = SPACE; 5519 scsi_cmd->code = code; 5520 scsi_ulto3b(count, scsi_cmd->count); 5521 scsi_cmd->control = 0; 5522 5523 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5524 0, sense_len, sizeof(*scsi_cmd), timeout); 5525} 5526 5527void 5528scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 5529 void (*cbfcnp)(struct cam_periph *, union ccb *), 5530 u_int8_t tag_action, int immediate, int setmark, 5531 u_int32_t num_marks, u_int8_t sense_len, 5532 u_int32_t timeout) 5533{ 5534 struct scsi_write_filemarks *scsi_cmd; 5535 5536 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 5537 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5538 scsi_cmd->opcode = WRITE_FILEMARKS; 5539 if (immediate) 5540 scsi_cmd->byte2 |= SWFMRK_IMMED; 5541 if (setmark) 5542 scsi_cmd->byte2 |= SWFMRK_WSMK; 5543 5544 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 5545 5546 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5547 0, sense_len, sizeof(*scsi_cmd), timeout); 5548} 5549 5550/* 5551 * The reserve and release unit commands differ only by their opcodes. 5552 */ 5553void 5554scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 5555 void (*cbfcnp)(struct cam_periph *, union ccb *), 5556 u_int8_t tag_action, int third_party, 5557 int third_party_id, u_int8_t sense_len, 5558 u_int32_t timeout, int reserve) 5559{ 5560 struct scsi_reserve_release_unit *scsi_cmd; 5561 5562 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 5563 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5564 5565 if (reserve) 5566 scsi_cmd->opcode = RESERVE_UNIT; 5567 else 5568 scsi_cmd->opcode = RELEASE_UNIT; 5569 5570 if (third_party) { 5571 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 5572 scsi_cmd->lun_thirdparty |= 5573 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 5574 } 5575 5576 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5577 0, sense_len, sizeof(*scsi_cmd), timeout); 5578} 5579 5580void 5581scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 5582 void (*cbfcnp)(struct cam_periph *, union ccb *), 5583 u_int8_t tag_action, int immediate, int long_erase, 5584 u_int8_t sense_len, u_int32_t timeout) 5585{ 5586 struct scsi_erase *scsi_cmd; 5587 5588 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 5589 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5590 5591 scsi_cmd->opcode = ERASE; 5592 5593 if (immediate) 5594 scsi_cmd->lun_imm_long |= SE_IMMED; 5595 5596 if (long_erase) 5597 scsi_cmd->lun_imm_long |= SE_LONG; 5598 5599 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 5600 0, sense_len, sizeof(*scsi_cmd), timeout); 5601} 5602 5603/* 5604 * Read Tape Position command. 5605 */ 5606void 5607scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 5608 void (*cbfcnp)(struct cam_periph *, union ccb *), 5609 u_int8_t tag_action, int hardsoft, 5610 struct scsi_tape_position_data *sbp, 5611 u_int8_t sense_len, u_int32_t timeout) 5612{ 5613 struct scsi_tape_read_position *scmd; 5614 5615 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 5616 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 5617 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5618 bzero(scmd, sizeof(*scmd)); 5619 scmd->opcode = READ_POSITION; 5620 scmd->byte1 = hardsoft; 5621} 5622 5623/* 5624 * Read Tape Position command. 5625 */ 5626void 5627scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries, 5628 void (*cbfcnp)(struct cam_periph *, union ccb *), 5629 u_int8_t tag_action, int service_action, 5630 u_int8_t *data_ptr, u_int32_t length, 5631 u_int32_t sense_len, u_int32_t timeout) 5632{ 5633 struct scsi_tape_read_position *scmd; 5634 5635 cam_fill_csio(csio, 5636 retries, 5637 cbfcnp, 5638 /*flags*/CAM_DIR_IN, 5639 tag_action, 5640 /*data_ptr*/data_ptr, 5641 /*dxfer_len*/length, 5642 sense_len, 5643 sizeof(*scmd), 5644 timeout); 5645 5646 5647 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 5648 bzero(scmd, sizeof(*scmd)); 5649 scmd->opcode = READ_POSITION; 5650 scmd->byte1 = service_action; 5651 /* 5652 * The length is only currently set (as of SSC4r03) if the extended 5653 * form is specified. The other forms have fixed lengths. 5654 */ 5655 if (service_action == SA_RPOS_EXTENDED_FORM) 5656 scsi_ulto2b(length, scmd->length); 5657} 5658 5659/* 5660 * Set Tape Position command. 5661 */ 5662void 5663scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 5664 void (*cbfcnp)(struct cam_periph *, union ccb *), 5665 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 5666 u_int8_t sense_len, u_int32_t timeout) 5667{ 5668 struct scsi_tape_locate *scmd; 5669 5670 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 5671 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 5672 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5673 bzero(scmd, sizeof(*scmd)); 5674 scmd->opcode = LOCATE; 5675 if (hardsoft) 5676 scmd->byte1 |= SA_SPOS_BT; 5677 scsi_ulto4b(blkno, scmd->blkaddr); 5678} 5679 5680/* 5681 * XXX KDM figure out how to make a compatibility function. 5682 */ 5683void 5684scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries, 5685 void (*cbfcnp)(struct cam_periph *, union ccb *), 5686 u_int8_t tag_action, int immed, int cp, int hard, 5687 int64_t partition, u_int32_t block_address, 5688 int sense_len, u_int32_t timeout) 5689{ 5690 struct scsi_tape_locate *scmd; 5691 5692 cam_fill_csio(csio, 5693 retries, 5694 cbfcnp, 5695 CAM_DIR_NONE, 5696 tag_action, 5697 /*data_ptr*/ NULL, 5698 /*dxfer_len*/ 0, 5699 sense_len, 5700 sizeof(*scmd), 5701 timeout); 5702 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 5703 bzero(scmd, sizeof(*scmd)); 5704 scmd->opcode = LOCATE; 5705 if (immed) 5706 scmd->byte1 |= SA_SPOS_IMMED; 5707 if (cp) 5708 scmd->byte1 |= SA_SPOS_CP; 5709 if (hard) 5710 scmd->byte1 |= SA_SPOS_BT; 5711 scsi_ulto4b(block_address, scmd->blkaddr); 5712 scmd->partition = partition; 5713} 5714 5715void 5716scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries, 5717 void (*cbfcnp)(struct cam_periph *, union ccb *), 5718 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type, 5719 int bam, int64_t partition, u_int64_t logical_id, 5720 int sense_len, u_int32_t timeout) 5721{ 5722 5723 struct scsi_locate_16 *scsi_cmd; 5724 5725 cam_fill_csio(csio, 5726 retries, 5727 cbfcnp, 5728 /*flags*/CAM_DIR_NONE, 5729 tag_action, 5730 /*data_ptr*/NULL, 5731 /*dxfer_len*/0, 5732 sense_len, 5733 sizeof(*scsi_cmd), 5734 timeout); 5735 5736 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes; 5737 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5738 scsi_cmd->opcode = LOCATE_16; 5739 if (immed) 5740 scsi_cmd->byte1 |= SA_LC_IMMEDIATE; 5741 if (cp) 5742 scsi_cmd->byte1 |= SA_LC_CP; 5743 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT); 5744 5745 scsi_cmd->byte2 |= bam; 5746 scsi_cmd->partition = partition; 5747 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5748} 5749 5750void 5751scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries, 5752 void (*cbfcnp)(struct cam_periph *, union ccb *), 5753 u_int8_t tag_action, int media, int medium_type, 5754 u_int8_t *data_ptr, u_int32_t length, 5755 u_int32_t sense_len, u_int32_t timeout) 5756{ 5757 struct scsi_report_density_support *scsi_cmd; 5758 5759 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes; 5760 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5761 5762 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT; 5763 if (media != 0) 5764 scsi_cmd->byte1 |= SRDS_MEDIA; 5765 if (medium_type != 0) 5766 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE; 5767 5768 scsi_ulto2b(length, scsi_cmd->length); 5769 5770 cam_fill_csio(csio, 5771 retries, 5772 cbfcnp, 5773 /*flags*/CAM_DIR_IN, 5774 tag_action, 5775 /*data_ptr*/data_ptr, 5776 /*dxfer_len*/length, 5777 sense_len, 5778 sizeof(*scsi_cmd), 5779 timeout); 5780} 5781 5782void 5783scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries, 5784 void (*cbfcnp)(struct cam_periph *, union ccb *), 5785 u_int8_t tag_action, int byte1, u_int32_t proportion, 5786 u_int32_t sense_len, u_int32_t timeout) 5787{ 5788 struct scsi_set_capacity *scsi_cmd; 5789 5790 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes; 5791 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5792 5793 scsi_cmd->opcode = SET_CAPACITY; 5794 5795 scsi_cmd->byte1 = byte1; 5796 scsi_ulto2b(proportion, scsi_cmd->cap_proportion); 5797 5798 cam_fill_csio(csio, 5799 retries, 5800 cbfcnp, 5801 /*flags*/CAM_DIR_NONE, 5802 tag_action, 5803 /*data_ptr*/NULL, 5804 /*dxfer_len*/0, 5805 sense_len, 5806 sizeof(*scsi_cmd), 5807 timeout); 5808} 5809 5810void 5811scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries, 5812 void (*cbfcnp)(struct cam_periph *, union ccb *), 5813 u_int8_t tag_action, int byte1, int byte2, 5814 u_int8_t *data_ptr, u_int32_t dxfer_len, 5815 u_int32_t sense_len, u_int32_t timeout) 5816{ 5817 struct scsi_format_medium *scsi_cmd; 5818 5819 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes; 5820 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5821 5822 scsi_cmd->opcode = FORMAT_MEDIUM; 5823 5824 scsi_cmd->byte1 = byte1; 5825 scsi_cmd->byte2 = byte2; 5826 5827 scsi_ulto2b(dxfer_len, scsi_cmd->length); 5828 5829 cam_fill_csio(csio, 5830 retries, 5831 cbfcnp, 5832 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE, 5833 tag_action, 5834 /*data_ptr*/ data_ptr, 5835 /*dxfer_len*/ dxfer_len, 5836 sense_len, 5837 sizeof(*scsi_cmd), 5838 timeout); 5839} 5840 5841void 5842scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries, 5843 void (*cbfcnp)(struct cam_periph *, union ccb *), 5844 u_int8_t tag_action, int allow_overwrite, int partition, 5845 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout) 5846{ 5847 struct scsi_allow_overwrite *scsi_cmd; 5848 5849 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes; 5850 bzero(scsi_cmd, sizeof(*scsi_cmd)); 5851 5852 scsi_cmd->opcode = ALLOW_OVERWRITE; 5853 5854 scsi_cmd->allow_overwrite = allow_overwrite; 5855 scsi_cmd->partition = partition; 5856 scsi_u64to8b(logical_id, scsi_cmd->logical_id); 5857 5858 cam_fill_csio(csio, 5859 retries, 5860 cbfcnp, 5861 CAM_DIR_NONE, 5862 tag_action, 5863 /*data_ptr*/ NULL, 5864 /*dxfer_len*/ 0, 5865 sense_len, 5866 sizeof(*scsi_cmd), 5867 timeout); 5868} 5869