1 /*-
2 * Implementation of SCSI Sequential Access Peripheral driver for CAM.
3 *
4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 *
6 * Copyright (c) 1999, 2000 Matthew Jacob
7 * Copyright (c) 2013, 2014, 2015 Spectra Logic Corporation
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions, and the following disclaimer,
15 * without modification, immediately at the beginning of the file.
16 * 2. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include <sys/param.h>
36 #include <sys/queue.h>
37 #ifdef _KERNEL
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #endif
41 #include <sys/types.h>
42 #include <sys/time.h>
43 #include <sys/bio.h>
44 #include <sys/limits.h>
45 #include <sys/malloc.h>
46 #include <sys/mtio.h>
47 #ifdef _KERNEL
48 #include <sys/conf.h>
49 #include <sys/sbuf.h>
50 #include <sys/sysctl.h>
51 #include <sys/taskqueue.h>
52 #endif
53 #include <sys/fcntl.h>
54 #include <sys/devicestat.h>
55
56 #ifndef _KERNEL
57 #include <stdio.h>
58 #include <string.h>
59 #endif
60
61 #include <cam/cam.h>
62 #include <cam/cam_ccb.h>
63 #include <cam/cam_periph.h>
64 #include <cam/cam_xpt_periph.h>
65 #include <cam/cam_debug.h>
66
67 #include <cam/scsi/scsi_all.h>
68 #include <cam/scsi/scsi_message.h>
69 #include <cam/scsi/scsi_sa.h>
70
71 #ifdef _KERNEL
72
73 #include "opt_sa.h"
74
75 #ifndef SA_IO_TIMEOUT
76 #define SA_IO_TIMEOUT 32
77 #endif
78 #ifndef SA_SPACE_TIMEOUT
79 #define SA_SPACE_TIMEOUT 1 * 60
80 #endif
81 #ifndef SA_REWIND_TIMEOUT
82 #define SA_REWIND_TIMEOUT 2 * 60
83 #endif
84 #ifndef SA_ERASE_TIMEOUT
85 #define SA_ERASE_TIMEOUT 4 * 60
86 #endif
87 #ifndef SA_REP_DENSITY_TIMEOUT
88 #define SA_REP_DENSITY_TIMEOUT 90
89 #endif
90
91 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */
92
93 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000)
94 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000)
95 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000)
96 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000)
97 #define REP_DENSITY_TIMEOUT (SA_REP_DENSITY_TIMEOUT * 60 * 1000)
98
99 /*
100 * Additional options that can be set for config: SA_1FM_AT_EOT
101 */
102
103 #ifndef UNUSED_PARAMETER
104 #define UNUSED_PARAMETER(x) x = x
105 #endif
106
107 #define QFRLS(ccb) \
108 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \
109 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE)
110
111 /*
112 * Driver states
113 */
114
115 static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers");
116
117 typedef enum {
118 SA_STATE_NORMAL, SA_STATE_ABNORMAL
119 } sa_state;
120
121 #define ccb_pflags ppriv_field0
122 #define ccb_bp ppriv_ptr1
123
124 /* bits in ccb_pflags */
125 #define SA_POSITION_UPDATED 0x1
126
127
128 typedef enum {
129 SA_FLAG_OPEN = 0x0001,
130 SA_FLAG_FIXED = 0x0002,
131 SA_FLAG_TAPE_LOCKED = 0x0004,
132 SA_FLAG_TAPE_MOUNTED = 0x0008,
133 SA_FLAG_TAPE_WP = 0x0010,
134 SA_FLAG_TAPE_WRITTEN = 0x0020,
135 SA_FLAG_EOM_PENDING = 0x0040,
136 SA_FLAG_EIO_PENDING = 0x0080,
137 SA_FLAG_EOF_PENDING = 0x0100,
138 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING|
139 SA_FLAG_EOF_PENDING),
140 SA_FLAG_INVALID = 0x0200,
141 SA_FLAG_COMP_ENABLED = 0x0400,
142 SA_FLAG_COMP_SUPP = 0x0800,
143 SA_FLAG_COMP_UNSUPP = 0x1000,
144 SA_FLAG_TAPE_FROZEN = 0x2000,
145 SA_FLAG_PROTECT_SUPP = 0x4000,
146
147 SA_FLAG_COMPRESSION = (SA_FLAG_COMP_SUPP|SA_FLAG_COMP_ENABLED|
148 SA_FLAG_COMP_UNSUPP),
149 SA_FLAG_SCTX_INIT = 0x8000
150 } sa_flags;
151
152 typedef enum {
153 SA_MODE_REWIND = 0x00,
154 SA_MODE_NOREWIND = 0x01,
155 SA_MODE_OFFLINE = 0x02
156 } sa_mode;
157
158 typedef enum {
159 SA_PARAM_NONE = 0x000,
160 SA_PARAM_BLOCKSIZE = 0x001,
161 SA_PARAM_DENSITY = 0x002,
162 SA_PARAM_COMPRESSION = 0x004,
163 SA_PARAM_BUFF_MODE = 0x008,
164 SA_PARAM_NUMBLOCKS = 0x010,
165 SA_PARAM_WP = 0x020,
166 SA_PARAM_SPEED = 0x040,
167 SA_PARAM_DENSITY_EXT = 0x080,
168 SA_PARAM_LBP = 0x100,
169 SA_PARAM_ALL = 0x1ff
170 } sa_params;
171
172 typedef enum {
173 SA_QUIRK_NONE = 0x000,
174 SA_QUIRK_NOCOMP = 0x001, /* Can't deal with compression at all*/
175 SA_QUIRK_FIXED = 0x002, /* Force fixed mode */
176 SA_QUIRK_VARIABLE = 0x004, /* Force variable mode */
177 SA_QUIRK_2FM = 0x008, /* Needs Two File Marks at EOD */
178 SA_QUIRK_1FM = 0x010, /* No more than 1 File Mark at EOD */
179 SA_QUIRK_NODREAD = 0x020, /* Don't try and dummy read density */
180 SA_QUIRK_NO_MODESEL = 0x040, /* Don't do mode select at all */
181 SA_QUIRK_NO_CPAGE = 0x080, /* Don't use DEVICE COMPRESSION page */
182 SA_QUIRK_NO_LONG_POS = 0x100 /* No long position information */
183 } sa_quirks;
184
185 #define SA_QUIRK_BIT_STRING \
186 "\020" \
187 "\001NOCOMP" \
188 "\002FIXED" \
189 "\003VARIABLE" \
190 "\0042FM" \
191 "\0051FM" \
192 "\006NODREAD" \
193 "\007NO_MODESEL" \
194 "\010NO_CPAGE" \
195 "\011NO_LONG_POS"
196
197 #define SAMODE(z) (dev2unit(z) & 0x3)
198 #define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4))
199
200 #define SA_NOT_CTLDEV 0
201 #define SA_CTLDEV 1
202
203 #define SA_ATYPE_R 0
204 #define SA_ATYPE_NR 1
205 #define SA_ATYPE_ER 2
206 #define SA_NUM_ATYPES 3
207
208 #define SAMINOR(ctl, access) \
209 ((ctl << 4) | (access & 0x3))
210
211 struct sa_devs {
212 struct cdev *ctl_dev;
213 struct cdev *r_dev;
214 struct cdev *nr_dev;
215 struct cdev *er_dev;
216 };
217
218 #define SASBADDBASE(sb, indent, data, xfmt, name, type, xsize, desc) \
219 sbuf_printf(sb, "%*s<%s type=\"%s\" size=\"%zd\" " \
220 "fmt=\"%s\" desc=\"%s\">" #xfmt "</%s>\n", indent, "", \
221 #name, #type, xsize, #xfmt, desc ? desc : "", data, #name);
222
223 #define SASBADDINT(sb, indent, data, fmt, name) \
224 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \
225 NULL)
226
227 #define SASBADDINTDESC(sb, indent, data, fmt, name, desc) \
228 SASBADDBASE(sb, indent, data, fmt, name, int, sizeof(data), \
229 desc)
230
231 #define SASBADDUINT(sb, indent, data, fmt, name) \
232 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \
233 NULL)
234
235 #define SASBADDUINTDESC(sb, indent, data, fmt, name, desc) \
236 SASBADDBASE(sb, indent, data, fmt, name, uint, sizeof(data), \
237 desc)
238
239 #define SASBADDFIXEDSTR(sb, indent, data, fmt, name) \
240 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \
241 NULL)
242
243 #define SASBADDFIXEDSTRDESC(sb, indent, data, fmt, name, desc) \
244 SASBADDBASE(sb, indent, data, fmt, name, str, sizeof(data), \
245 desc)
246
247 #define SASBADDVARSTR(sb, indent, data, fmt, name, maxlen) \
248 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, NULL)
249
250 #define SASBADDVARSTRDESC(sb, indent, data, fmt, name, maxlen, desc) \
251 SASBADDBASE(sb, indent, data, fmt, name, str, maxlen, desc)
252
253 #define SASBADDNODE(sb, indent, name) { \
254 sbuf_printf(sb, "%*s<%s type=\"%s\">\n", indent, "", #name, \
255 "node"); \
256 indent += 2; \
257 }
258
259 #define SASBADDNODENUM(sb, indent, name, num) { \
260 sbuf_printf(sb, "%*s<%s type=\"%s\" num=\"%d\">\n", indent, "", \
261 #name, "node", num); \
262 indent += 2; \
263 }
264
265 #define SASBENDNODE(sb, indent, name) { \
266 indent -= 2; \
267 sbuf_printf(sb, "%*s</%s>\n", indent, "", #name); \
268 }
269
270 #define SA_DENSITY_TYPES 4
271
272 struct sa_prot_state {
273 int initialized;
274 uint32_t prot_method;
275 uint32_t pi_length;
276 uint32_t lbp_w;
277 uint32_t lbp_r;
278 uint32_t rbdp;
279 };
280
281 struct sa_prot_info {
282 struct sa_prot_state cur_prot_state;
283 struct sa_prot_state pending_prot_state;
284 };
285
286 /*
287 * A table mapping protection parameters to their types and values.
288 */
289 struct sa_prot_map {
290 char *name;
291 mt_param_set_type param_type;
292 off_t offset;
293 uint32_t min_val;
294 uint32_t max_val;
295 uint32_t *value;
296 } sa_prot_table[] = {
297 { "prot_method", MT_PARAM_SET_UNSIGNED,
298 __offsetof(struct sa_prot_state, prot_method),
299 /*min_val*/ 0, /*max_val*/ 255, NULL },
300 { "pi_length", MT_PARAM_SET_UNSIGNED,
301 __offsetof(struct sa_prot_state, pi_length),
302 /*min_val*/ 0, /*max_val*/ SA_CTRL_DP_PI_LENGTH_MASK, NULL },
303 { "lbp_w", MT_PARAM_SET_UNSIGNED,
304 __offsetof(struct sa_prot_state, lbp_w),
305 /*min_val*/ 0, /*max_val*/ 1, NULL },
306 { "lbp_r", MT_PARAM_SET_UNSIGNED,
307 __offsetof(struct sa_prot_state, lbp_r),
308 /*min_val*/ 0, /*max_val*/ 1, NULL },
309 { "rbdp", MT_PARAM_SET_UNSIGNED,
310 __offsetof(struct sa_prot_state, rbdp),
311 /*min_val*/ 0, /*max_val*/ 1, NULL }
312 };
313
314 #define SA_NUM_PROT_ENTS nitems(sa_prot_table)
315
316 #define SA_PROT_ENABLED(softc) ((softc->flags & SA_FLAG_PROTECT_SUPP) \
317 && (softc->prot_info.cur_prot_state.initialized != 0) \
318 && (softc->prot_info.cur_prot_state.prot_method != 0))
319
320 #define SA_PROT_LEN(softc) softc->prot_info.cur_prot_state.pi_length
321
322 struct sa_softc {
323 sa_state state;
324 sa_flags flags;
325 sa_quirks quirks;
326 u_int si_flags;
327 struct cam_periph *periph;
328 struct bio_queue_head bio_queue;
329 int queue_count;
330 struct devstat *device_stats;
331 struct sa_devs devs;
332 int open_count;
333 int num_devs_to_destroy;
334 int blk_gran;
335 int blk_mask;
336 int blk_shift;
337 u_int32_t max_blk;
338 u_int32_t min_blk;
339 u_int32_t maxio;
340 u_int32_t cpi_maxio;
341 int allow_io_split;
342 int inject_eom;
343 int set_pews_status;
344 u_int32_t comp_algorithm;
345 u_int32_t saved_comp_algorithm;
346 u_int32_t media_blksize;
347 u_int32_t last_media_blksize;
348 u_int32_t media_numblks;
349 u_int8_t media_density;
350 u_int8_t speed;
351 u_int8_t scsi_rev;
352 u_int8_t dsreg; /* mtio mt_dsreg, redux */
353 int buffer_mode;
354 int filemarks;
355 union ccb saved_ccb;
356 int last_resid_was_io;
357 uint8_t density_type_bits[SA_DENSITY_TYPES];
358 int density_info_valid[SA_DENSITY_TYPES];
359 uint8_t density_info[SA_DENSITY_TYPES][SRDS_MAX_LENGTH];
360
361 struct sa_prot_info prot_info;
362
363 int sili;
364 int eot_warn;
365
366 /*
367 * Current position information. -1 means that the given value is
368 * unknown. fileno and blkno are always calculated. blkno is
369 * relative to the previous file mark. rep_fileno and rep_blkno
370 * are as reported by the drive, if it supports the long form
371 * report for the READ POSITION command. rep_blkno is relative to
372 * the beginning of the partition.
373 *
374 * bop means that the drive is at the beginning of the partition.
375 * eop means that the drive is between early warning and end of
376 * partition, inside the current partition.
377 * bpew means that the position is in a PEWZ (Programmable Early
378 * Warning Zone)
379 */
380 daddr_t partition; /* Absolute from BOT */
381 daddr_t fileno; /* Relative to beginning of partition */
382 daddr_t blkno; /* Relative to last file mark */
383 daddr_t rep_blkno; /* Relative to beginning of partition */
384 daddr_t rep_fileno; /* Relative to beginning of partition */
385 int bop; /* Beginning of Partition */
386 int eop; /* End of Partition */
387 int bpew; /* Beyond Programmable Early Warning */
388
389 /*
390 * Latched Error Info
391 */
392 struct {
393 struct scsi_sense_data _last_io_sense;
394 u_int64_t _last_io_resid;
395 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN];
396 struct scsi_sense_data _last_ctl_sense;
397 u_int64_t _last_ctl_resid;
398 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
399 #define last_io_sense errinfo._last_io_sense
400 #define last_io_resid errinfo._last_io_resid
401 #define last_io_cdb errinfo._last_io_cdb
402 #define last_ctl_sense errinfo._last_ctl_sense
403 #define last_ctl_resid errinfo._last_ctl_resid
404 #define last_ctl_cdb errinfo._last_ctl_cdb
405 } errinfo;
406 /*
407 * Misc other flags/state
408 */
409 u_int32_t
410 : 29,
411 open_rdonly : 1, /* open read-only */
412 open_pending_mount : 1, /* open pending mount */
413 ctrl_mode : 1; /* control device open */
414
415 struct task sysctl_task;
416 struct sysctl_ctx_list sysctl_ctx;
417 struct sysctl_oid *sysctl_tree;
418 };
419
420 struct sa_quirk_entry {
421 struct scsi_inquiry_pattern inq_pat; /* matching pattern */
422 sa_quirks quirks; /* specific quirk type */
423 u_int32_t prefblk; /* preferred blocksize when in fixed mode */
424 };
425
426 static struct sa_quirk_entry sa_quirk_table[] =
427 {
428 {
429 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream",
430 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD |
431 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768
432 },
433 {
434 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
435 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0
436 },
437 {
438 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
439 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0
440 },
441 {
442 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
443 "Python*", "*"}, SA_QUIRK_NODREAD, 0
444 },
445 {
446 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
447 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
448 },
449 {
450 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
451 "VIPER 2525 25462", "-011"},
452 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0
453 },
454 {
455 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE",
456 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
457 },
458 #if 0
459 {
460 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
461 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0,
462 },
463 #endif
464 {
465 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
466 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
467 },
468 {
469 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
470 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
471 },
472 {
473 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
474 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
475 },
476 {
477 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP",
478 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
479 },
480 {
481 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY",
482 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
483 },
484 {
485 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA",
486 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
487 },
488 { /* [email protected] */
489 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
490 "STT8000N*", "*"}, SA_QUIRK_1FM, 0
491 },
492 { /* [email protected] */
493 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate",
494 "STT20000*", "*"}, SA_QUIRK_1FM, 0
495 },
496 {
497 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE",
498 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0
499 },
500 {
501 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
502 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
503 },
504 {
505 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
506 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
507 },
508 {
509 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
510 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
511 },
512 {
513 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
514 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512
515 },
516 {
517 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG",
518 " SLR*", "*"}, SA_QUIRK_1FM, 0
519 },
520 {
521 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
522 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512
523 },
524 {
525 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK",
526 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024
527 }
528 };
529
530 static d_open_t saopen;
531 static d_close_t saclose;
532 static d_strategy_t sastrategy;
533 static d_ioctl_t saioctl;
534 static periph_init_t sainit;
535 static periph_ctor_t saregister;
536 static periph_oninv_t saoninvalidate;
537 static periph_dtor_t sacleanup;
538 static periph_start_t sastart;
539 static void saasync(void *callback_arg, u_int32_t code,
540 struct cam_path *path, void *arg);
541 static void sadone(struct cam_periph *periph,
542 union ccb *start_ccb);
543 static int saerror(union ccb *ccb, u_int32_t cam_flags,
544 u_int32_t sense_flags);
545 static int samarkswanted(struct cam_periph *);
546 static int sacheckeod(struct cam_periph *periph);
547 static int sagetparams(struct cam_periph *periph,
548 sa_params params_to_get,
549 u_int32_t *blocksize, u_int8_t *density,
550 u_int32_t *numblocks, int *buff_mode,
551 u_int8_t *write_protect, u_int8_t *speed,
552 int *comp_supported, int *comp_enabled,
553 u_int32_t *comp_algorithm,
554 sa_comp_t *comp_page,
555 struct scsi_control_data_prot_subpage
556 *prot_page, int dp_size,
557 int prot_changeable);
558 static int sasetprot(struct cam_periph *periph,
559 struct sa_prot_state *new_prot);
560 static int sasetparams(struct cam_periph *periph,
561 sa_params params_to_set,
562 u_int32_t blocksize, u_int8_t density,
563 u_int32_t comp_algorithm,
564 u_int32_t sense_flags);
565 static int sasetsili(struct cam_periph *periph,
566 struct mtparamset *ps, int num_params);
567 static int saseteotwarn(struct cam_periph *periph,
568 struct mtparamset *ps, int num_params);
569 static void safillprot(struct sa_softc *softc, int *indent,
570 struct sbuf *sb);
571 static void sapopulateprots(struct sa_prot_state *cur_state,
572 struct sa_prot_map *new_table,
573 int table_ents);
574 static struct sa_prot_map *safindprotent(char *name, struct sa_prot_map *table,
575 int table_ents);
576 static int sasetprotents(struct cam_periph *periph,
577 struct mtparamset *ps, int num_params);
578 static struct sa_param_ent *safindparament(struct mtparamset *ps);
579 static int saparamsetlist(struct cam_periph *periph,
580 struct mtsetlist *list, int need_copy);
581 static int saextget(struct cdev *dev, struct cam_periph *periph,
582 struct sbuf *sb, struct mtextget *g);
583 static int saparamget(struct sa_softc *softc, struct sbuf *sb);
584 static void saprevent(struct cam_periph *periph, int action);
585 static int sarewind(struct cam_periph *periph);
586 static int saspace(struct cam_periph *periph, int count,
587 scsi_space_code code);
588 static void sadevgonecb(void *arg);
589 static void sasetupdev(struct sa_softc *softc, struct cdev *dev);
590 static int samount(struct cam_periph *, int, struct cdev *);
591 static int saretension(struct cam_periph *periph);
592 static int sareservereleaseunit(struct cam_periph *periph,
593 int reserve);
594 static int saloadunload(struct cam_periph *periph, int load);
595 static int saerase(struct cam_periph *periph, int longerase);
596 static int sawritefilemarks(struct cam_periph *periph,
597 int nmarks, int setmarks, int immed);
598 static int sagetpos(struct cam_periph *periph);
599 static int sardpos(struct cam_periph *periph, int, u_int32_t *);
600 static int sasetpos(struct cam_periph *periph, int,
601 struct mtlocate *);
602 static void safilldenstypesb(struct sbuf *sb, int *indent,
603 uint8_t *buf, int buf_len,
604 int is_density);
605 static void safilldensitysb(struct sa_softc *softc, int *indent,
606 struct sbuf *sb);
607
608
609 #ifndef SA_DEFAULT_IO_SPLIT
610 #define SA_DEFAULT_IO_SPLIT 0
611 #endif
612
613 static int sa_allow_io_split = SA_DEFAULT_IO_SPLIT;
614
615 /*
616 * Tunable to allow the user to set a global allow_io_split value. Note
617 * that this WILL GO AWAY in FreeBSD 11.0. Silently splitting the I/O up
618 * is bad behavior, because it hides the true tape block size from the
619 * application.
620 */
621 static SYSCTL_NODE(_kern_cam, OID_AUTO, sa, CTLFLAG_RD, 0,
622 "CAM Sequential Access Tape Driver");
623 SYSCTL_INT(_kern_cam_sa, OID_AUTO, allow_io_split, CTLFLAG_RDTUN,
624 &sa_allow_io_split, 0, "Default I/O split value");
625
626 static struct periph_driver sadriver =
627 {
628 sainit, "sa",
629 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0
630 };
631
632 PERIPHDRIVER_DECLARE(sa, sadriver);
633
634 /* For 2.2-stable support */
635 #ifndef D_TAPE
636 #define D_TAPE 0
637 #endif
638
639
640 static struct cdevsw sa_cdevsw = {
641 .d_version = D_VERSION,
642 .d_open = saopen,
643 .d_close = saclose,
644 .d_read = physread,
645 .d_write = physwrite,
646 .d_ioctl = saioctl,
647 .d_strategy = sastrategy,
648 .d_name = "sa",
649 .d_flags = D_TAPE | D_TRACKCLOSE,
650 };
651
652 static int
saopen(struct cdev * dev,int flags,int fmt,struct thread * td)653 saopen(struct cdev *dev, int flags, int fmt, struct thread *td)
654 {
655 struct cam_periph *periph;
656 struct sa_softc *softc;
657 int error;
658
659 periph = (struct cam_periph *)dev->si_drv1;
660 if (cam_periph_acquire(periph) != 0) {
661 return (ENXIO);
662 }
663
664 cam_periph_lock(periph);
665
666 softc = (struct sa_softc *)periph->softc;
667
668 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
669 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags));
670
671 if (SA_IS_CTRL(dev)) {
672 softc->ctrl_mode = 1;
673 softc->open_count++;
674 cam_periph_unlock(periph);
675 return (0);
676 }
677
678 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
679 cam_periph_unlock(periph);
680 cam_periph_release(periph);
681 return (error);
682 }
683
684 if (softc->flags & SA_FLAG_OPEN) {
685 error = EBUSY;
686 } else if (softc->flags & SA_FLAG_INVALID) {
687 error = ENXIO;
688 } else {
689 /*
690 * Preserve whether this is a read_only open.
691 */
692 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY;
693
694 /*
695 * The function samount ensures media is loaded and ready.
696 * It also does a device RESERVE if the tape isn't yet mounted.
697 *
698 * If the mount fails and this was a non-blocking open,
699 * make this a 'open_pending_mount' action.
700 */
701 error = samount(periph, flags, dev);
702 if (error && (flags & O_NONBLOCK)) {
703 softc->flags |= SA_FLAG_OPEN;
704 softc->open_pending_mount = 1;
705 softc->open_count++;
706 cam_periph_unhold(periph);
707 cam_periph_unlock(periph);
708 return (0);
709 }
710 }
711
712 if (error) {
713 cam_periph_unhold(periph);
714 cam_periph_unlock(periph);
715 cam_periph_release(periph);
716 return (error);
717 }
718
719 saprevent(periph, PR_PREVENT);
720 softc->flags |= SA_FLAG_OPEN;
721 softc->open_count++;
722
723 cam_periph_unhold(periph);
724 cam_periph_unlock(periph);
725 return (error);
726 }
727
728 static int
saclose(struct cdev * dev,int flag,int fmt,struct thread * td)729 saclose(struct cdev *dev, int flag, int fmt, struct thread *td)
730 {
731 struct cam_periph *periph;
732 struct sa_softc *softc;
733 int mode, error, writing, tmp, i;
734 int closedbits = SA_FLAG_OPEN;
735
736 mode = SAMODE(dev);
737 periph = (struct cam_periph *)dev->si_drv1;
738 cam_periph_lock(periph);
739
740 softc = (struct sa_softc *)periph->softc;
741
742 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO,
743 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags));
744
745
746 softc->open_rdonly = 0;
747 if (SA_IS_CTRL(dev)) {
748 softc->ctrl_mode = 0;
749 softc->open_count--;
750 cam_periph_unlock(periph);
751 cam_periph_release(periph);
752 return (0);
753 }
754
755 if (softc->open_pending_mount) {
756 softc->flags &= ~SA_FLAG_OPEN;
757 softc->open_pending_mount = 0;
758 softc->open_count--;
759 cam_periph_unlock(periph);
760 cam_periph_release(periph);
761 return (0);
762 }
763
764 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
765 cam_periph_unlock(periph);
766 return (error);
767 }
768
769 /*
770 * Were we writing the tape?
771 */
772 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0;
773
774 /*
775 * See whether or not we need to write filemarks. If this
776 * fails, we probably have to assume we've lost tape
777 * position.
778 */
779 error = sacheckeod(periph);
780 if (error) {
781 xpt_print(periph->path,
782 "failed to write terminating filemark(s)\n");
783 softc->flags |= SA_FLAG_TAPE_FROZEN;
784 }
785
786 /*
787 * Whatever we end up doing, allow users to eject tapes from here on.
788 */
789 saprevent(periph, PR_ALLOW);
790
791 /*
792 * Decide how to end...
793 */
794 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
795 closedbits |= SA_FLAG_TAPE_FROZEN;
796 } else switch (mode) {
797 case SA_MODE_OFFLINE:
798 /*
799 * An 'offline' close is an unconditional release of
800 * frozen && mount conditions, irrespective of whether
801 * these operations succeeded. The reason for this is
802 * to allow at least some kind of programmatic way
803 * around our state getting all fouled up. If somebody
804 * issues an 'offline' command, that will be allowed
805 * to clear state.
806 */
807 (void) sarewind(periph);
808 (void) saloadunload(periph, FALSE);
809 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN;
810 break;
811 case SA_MODE_REWIND:
812 /*
813 * If the rewind fails, return an error- if anyone cares,
814 * but not overwriting any previous error.
815 *
816 * We don't clear the notion of mounted here, but we do
817 * clear the notion of frozen if we successfully rewound.
818 */
819 tmp = sarewind(periph);
820 if (tmp) {
821 if (error != 0)
822 error = tmp;
823 } else {
824 closedbits |= SA_FLAG_TAPE_FROZEN;
825 }
826 break;
827 case SA_MODE_NOREWIND:
828 /*
829 * If we're not rewinding/unloading the tape, find out
830 * whether we need to back up over one of two filemarks
831 * we wrote (if we wrote two filemarks) so that appends
832 * from this point on will be sane.
833 */
834 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) {
835 tmp = saspace(periph, -1, SS_FILEMARKS);
836 if (tmp) {
837 xpt_print(periph->path, "unable to backspace "
838 "over one of double filemarks at end of "
839 "tape\n");
840 xpt_print(periph->path, "it is possible that "
841 "this device needs a SA_QUIRK_1FM quirk set"
842 "for it\n");
843 softc->flags |= SA_FLAG_TAPE_FROZEN;
844 }
845 }
846 break;
847 default:
848 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode);
849 /* NOTREACHED */
850 break;
851 }
852
853 /*
854 * We wish to note here that there are no more filemarks to be written.
855 */
856 softc->filemarks = 0;
857 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
858
859 /*
860 * And we are no longer open for business.
861 */
862 softc->flags &= ~closedbits;
863 softc->open_count--;
864
865 /*
866 * Invalidate any density information that depends on having tape
867 * media in the drive.
868 */
869 for (i = 0; i < SA_DENSITY_TYPES; i++) {
870 if (softc->density_type_bits[i] & SRDS_MEDIA)
871 softc->density_info_valid[i] = 0;
872 }
873
874 /*
875 * Inform users if tape state if frozen....
876 */
877 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
878 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, "
879 "REWIND or MTEOM command to clear this state.\n");
880 }
881
882 /* release the device if it is no longer mounted */
883 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0)
884 sareservereleaseunit(periph, FALSE);
885
886 cam_periph_unhold(periph);
887 cam_periph_unlock(periph);
888 cam_periph_release(periph);
889
890 return (error);
891 }
892
893 /*
894 * Actually translate the requested transfer into one the physical driver
895 * can understand. The transfer is described by a buf and will include
896 * only one physical transfer.
897 */
898 static void
sastrategy(struct bio * bp)899 sastrategy(struct bio *bp)
900 {
901 struct cam_periph *periph;
902 struct sa_softc *softc;
903
904 bp->bio_resid = bp->bio_bcount;
905 if (SA_IS_CTRL(bp->bio_dev)) {
906 biofinish(bp, NULL, EINVAL);
907 return;
908 }
909 periph = (struct cam_periph *)bp->bio_dev->si_drv1;
910 cam_periph_lock(periph);
911
912 softc = (struct sa_softc *)periph->softc;
913
914 if (softc->flags & SA_FLAG_INVALID) {
915 cam_periph_unlock(periph);
916 biofinish(bp, NULL, ENXIO);
917 return;
918 }
919
920 if (softc->flags & SA_FLAG_TAPE_FROZEN) {
921 cam_periph_unlock(periph);
922 biofinish(bp, NULL, EPERM);
923 return;
924 }
925
926 /*
927 * This should actually never occur as the write(2)
928 * system call traps attempts to write to a read-only
929 * file descriptor.
930 */
931 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) {
932 cam_periph_unlock(periph);
933 biofinish(bp, NULL, EBADF);
934 return;
935 }
936
937 if (softc->open_pending_mount) {
938 int error = samount(periph, 0, bp->bio_dev);
939 if (error) {
940 cam_periph_unlock(periph);
941 biofinish(bp, NULL, ENXIO);
942 return;
943 }
944 saprevent(periph, PR_PREVENT);
945 softc->open_pending_mount = 0;
946 }
947
948
949 /*
950 * If it's a null transfer, return immediately
951 */
952 if (bp->bio_bcount == 0) {
953 cam_periph_unlock(periph);
954 biodone(bp);
955 return;
956 }
957
958 /* valid request? */
959 if (softc->flags & SA_FLAG_FIXED) {
960 /*
961 * Fixed block device. The byte count must
962 * be a multiple of our block size.
963 */
964 if (((softc->blk_mask != ~0) &&
965 ((bp->bio_bcount & softc->blk_mask) != 0)) ||
966 ((softc->blk_mask == ~0) &&
967 ((bp->bio_bcount % softc->min_blk) != 0))) {
968 xpt_print(periph->path, "Invalid request. Fixed block "
969 "device requests must be a multiple of %d bytes\n",
970 softc->min_blk);
971 cam_periph_unlock(periph);
972 biofinish(bp, NULL, EINVAL);
973 return;
974 }
975 } else if ((bp->bio_bcount > softc->max_blk) ||
976 (bp->bio_bcount < softc->min_blk) ||
977 (bp->bio_bcount & softc->blk_mask) != 0) {
978
979 xpt_print_path(periph->path);
980 printf("Invalid request. Variable block "
981 "device requests must be ");
982 if (softc->blk_mask != 0) {
983 printf("a multiple of %d ", (0x1 << softc->blk_gran));
984 }
985 printf("between %d and %d bytes\n", softc->min_blk,
986 softc->max_blk);
987 cam_periph_unlock(periph);
988 biofinish(bp, NULL, EINVAL);
989 return;
990 }
991
992 /*
993 * Place it at the end of the queue.
994 */
995 bioq_insert_tail(&softc->bio_queue, bp);
996 softc->queue_count++;
997 #if 0
998 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
999 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount,
1000 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
1001 (bp->bio_cmd == BIO_READ)? "read" : "write"));
1002 #endif
1003 if (softc->queue_count > 1) {
1004 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
1005 ("sastrategy: queue count now %d\n", softc->queue_count));
1006 }
1007
1008 /*
1009 * Schedule ourselves for performing the work.
1010 */
1011 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1012 cam_periph_unlock(periph);
1013
1014 return;
1015 }
1016
1017 static int
sasetsili(struct cam_periph * periph,struct mtparamset * ps,int num_params)1018 sasetsili(struct cam_periph *periph, struct mtparamset *ps, int num_params)
1019 {
1020 uint32_t sili_blocksize;
1021 struct sa_softc *softc;
1022 int error;
1023
1024 error = 0;
1025 softc = (struct sa_softc *)periph->softc;
1026
1027 if (ps->value_type != MT_PARAM_SET_SIGNED) {
1028 snprintf(ps->error_str, sizeof(ps->error_str),
1029 "sili is a signed parameter");
1030 goto bailout;
1031 }
1032 if ((ps->value.value_signed < 0)
1033 || (ps->value.value_signed > 1)) {
1034 snprintf(ps->error_str, sizeof(ps->error_str),
1035 "invalid sili value %jd", (intmax_t)ps->value.value_signed);
1036 goto bailout_error;
1037 }
1038 /*
1039 * We only set the SILI flag in variable block
1040 * mode. You'll get a check condition in fixed
1041 * block mode if things don't line up in any case.
1042 */
1043 if (softc->flags & SA_FLAG_FIXED) {
1044 snprintf(ps->error_str, sizeof(ps->error_str),
1045 "can't set sili bit in fixed block mode");
1046 goto bailout_error;
1047 }
1048 if (softc->sili == ps->value.value_signed)
1049 goto bailout;
1050
1051 if (ps->value.value_signed == 1)
1052 sili_blocksize = 4;
1053 else
1054 sili_blocksize = 0;
1055
1056 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
1057 sili_blocksize, 0, 0, SF_QUIET_IR);
1058 if (error != 0) {
1059 snprintf(ps->error_str, sizeof(ps->error_str),
1060 "sasetparams() returned error %d", error);
1061 goto bailout_error;
1062 }
1063
1064 softc->sili = ps->value.value_signed;
1065
1066 bailout:
1067 ps->status = MT_PARAM_STATUS_OK;
1068 return (error);
1069
1070 bailout_error:
1071 ps->status = MT_PARAM_STATUS_ERROR;
1072 if (error == 0)
1073 error = EINVAL;
1074
1075 return (error);
1076 }
1077
1078 static int
saseteotwarn(struct cam_periph * periph,struct mtparamset * ps,int num_params)1079 saseteotwarn(struct cam_periph *periph, struct mtparamset *ps, int num_params)
1080 {
1081 struct sa_softc *softc;
1082 int error;
1083
1084 error = 0;
1085 softc = (struct sa_softc *)periph->softc;
1086
1087 if (ps->value_type != MT_PARAM_SET_SIGNED) {
1088 snprintf(ps->error_str, sizeof(ps->error_str),
1089 "eot_warn is a signed parameter");
1090 ps->status = MT_PARAM_STATUS_ERROR;
1091 goto bailout;
1092 }
1093 if ((ps->value.value_signed < 0)
1094 || (ps->value.value_signed > 1)) {
1095 snprintf(ps->error_str, sizeof(ps->error_str),
1096 "invalid eot_warn value %jd\n",
1097 (intmax_t)ps->value.value_signed);
1098 ps->status = MT_PARAM_STATUS_ERROR;
1099 goto bailout;
1100 }
1101 softc->eot_warn = ps->value.value_signed;
1102 ps->status = MT_PARAM_STATUS_OK;
1103 bailout:
1104 if (ps->status != MT_PARAM_STATUS_OK)
1105 error = EINVAL;
1106
1107 return (error);
1108 }
1109
1110
1111 static void
safillprot(struct sa_softc * softc,int * indent,struct sbuf * sb)1112 safillprot(struct sa_softc *softc, int *indent, struct sbuf *sb)
1113 {
1114 int tmpint;
1115
1116 SASBADDNODE(sb, *indent, protection);
1117 if (softc->flags & SA_FLAG_PROTECT_SUPP)
1118 tmpint = 1;
1119 else
1120 tmpint = 0;
1121 SASBADDINTDESC(sb, *indent, tmpint, %d, protection_supported,
1122 "Set to 1 if protection information is supported");
1123
1124 if ((tmpint != 0)
1125 && (softc->prot_info.cur_prot_state.initialized != 0)) {
1126 struct sa_prot_state *prot;
1127
1128 prot = &softc->prot_info.cur_prot_state;
1129
1130 SASBADDUINTDESC(sb, *indent, prot->prot_method, %u,
1131 prot_method, "Current Protection Method");
1132 SASBADDUINTDESC(sb, *indent, prot->pi_length, %u,
1133 pi_length, "Length of Protection Information");
1134 SASBADDUINTDESC(sb, *indent, prot->lbp_w, %u,
1135 lbp_w, "Check Protection on Writes");
1136 SASBADDUINTDESC(sb, *indent, prot->lbp_r, %u,
1137 lbp_r, "Check and Include Protection on Reads");
1138 SASBADDUINTDESC(sb, *indent, prot->rbdp, %u,
1139 rbdp, "Transfer Protection Information for RECOVER "
1140 "BUFFERED DATA command");
1141 }
1142 SASBENDNODE(sb, *indent, protection);
1143 }
1144
1145 static void
sapopulateprots(struct sa_prot_state * cur_state,struct sa_prot_map * new_table,int table_ents)1146 sapopulateprots(struct sa_prot_state *cur_state, struct sa_prot_map *new_table,
1147 int table_ents)
1148 {
1149 int i;
1150
1151 bcopy(sa_prot_table, new_table, min(table_ents * sizeof(*new_table),
1152 sizeof(sa_prot_table)));
1153
1154 table_ents = min(table_ents, SA_NUM_PROT_ENTS);
1155
1156 for (i = 0; i < table_ents; i++)
1157 new_table[i].value = (uint32_t *)((uint8_t *)cur_state +
1158 new_table[i].offset);
1159
1160 return;
1161 }
1162
1163 static struct sa_prot_map *
safindprotent(char * name,struct sa_prot_map * table,int table_ents)1164 safindprotent(char *name, struct sa_prot_map *table, int table_ents)
1165 {
1166 char *prot_name = "protection.";
1167 int i, prot_len;
1168
1169 prot_len = strlen(prot_name);
1170
1171 /*
1172 * This shouldn't happen, but we check just in case.
1173 */
1174 if (strncmp(name, prot_name, prot_len) != 0)
1175 goto bailout;
1176
1177 for (i = 0; i < table_ents; i++) {
1178 if (strcmp(&name[prot_len], table[i].name) != 0)
1179 continue;
1180 return (&table[i]);
1181 }
1182 bailout:
1183 return (NULL);
1184 }
1185
1186 static int
sasetprotents(struct cam_periph * periph,struct mtparamset * ps,int num_params)1187 sasetprotents(struct cam_periph *periph, struct mtparamset *ps, int num_params)
1188 {
1189 struct sa_softc *softc;
1190 struct sa_prot_map prot_ents[SA_NUM_PROT_ENTS];
1191 struct sa_prot_state new_state;
1192 int error;
1193 int i;
1194
1195 softc = (struct sa_softc *)periph->softc;
1196 error = 0;
1197
1198 /*
1199 * Make sure that this tape drive supports protection information.
1200 * Otherwise we can't set anything.
1201 */
1202 if ((softc->flags & SA_FLAG_PROTECT_SUPP) == 0) {
1203 snprintf(ps[0].error_str, sizeof(ps[0].error_str),
1204 "Protection information is not supported for this device");
1205 ps[0].status = MT_PARAM_STATUS_ERROR;
1206 goto bailout;
1207 }
1208
1209 /*
1210 * We can't operate with physio(9) splitting enabled, because there
1211 * is no way to insure (especially in variable block mode) that
1212 * what the user writes (with a checksum block at the end) will
1213 * make it into the sa(4) driver intact.
1214 */
1215 if ((softc->si_flags & SI_NOSPLIT) == 0) {
1216 snprintf(ps[0].error_str, sizeof(ps[0].error_str),
1217 "Protection information cannot be enabled with I/O "
1218 "splitting");
1219 ps[0].status = MT_PARAM_STATUS_ERROR;
1220 goto bailout;
1221 }
1222
1223 /*
1224 * Take the current cached protection state and use that as the
1225 * basis for our new entries.
1226 */
1227 bcopy(&softc->prot_info.cur_prot_state, &new_state, sizeof(new_state));
1228
1229 /*
1230 * Populate the table mapping property names to pointers into the
1231 * state structure.
1232 */
1233 sapopulateprots(&new_state, prot_ents, SA_NUM_PROT_ENTS);
1234
1235 /*
1236 * For each parameter the user passed in, make sure the name, type
1237 * and value are valid.
1238 */
1239 for (i = 0; i < num_params; i++) {
1240 struct sa_prot_map *ent;
1241
1242 ent = safindprotent(ps[i].value_name, prot_ents,
1243 SA_NUM_PROT_ENTS);
1244 if (ent == NULL) {
1245 ps[i].status = MT_PARAM_STATUS_ERROR;
1246 snprintf(ps[i].error_str, sizeof(ps[i].error_str),
1247 "Invalid protection entry name %s",
1248 ps[i].value_name);
1249 error = EINVAL;
1250 goto bailout;
1251 }
1252 if (ent->param_type != ps[i].value_type) {
1253 ps[i].status = MT_PARAM_STATUS_ERROR;
1254 snprintf(ps[i].error_str, sizeof(ps[i].error_str),
1255 "Supplied type %d does not match actual type %d",
1256 ps[i].value_type, ent->param_type);
1257 error = EINVAL;
1258 goto bailout;
1259 }
1260 if ((ps[i].value.value_unsigned < ent->min_val)
1261 || (ps[i].value.value_unsigned > ent->max_val)) {
1262 ps[i].status = MT_PARAM_STATUS_ERROR;
1263 snprintf(ps[i].error_str, sizeof(ps[i].error_str),
1264 "Value %ju is outside valid range %u - %u",
1265 (uintmax_t)ps[i].value.value_unsigned, ent->min_val,
1266 ent->max_val);
1267 error = EINVAL;
1268 goto bailout;
1269 }
1270 *(ent->value) = ps[i].value.value_unsigned;
1271 }
1272
1273 /*
1274 * Actually send the protection settings to the drive.
1275 */
1276 error = sasetprot(periph, &new_state);
1277 if (error != 0) {
1278 for (i = 0; i < num_params; i++) {
1279 ps[i].status = MT_PARAM_STATUS_ERROR;
1280 snprintf(ps[i].error_str, sizeof(ps[i].error_str),
1281 "Unable to set parameter, see dmesg(8)");
1282 }
1283 goto bailout;
1284 }
1285
1286 /*
1287 * Let the user know that his settings were stored successfully.
1288 */
1289 for (i = 0; i < num_params; i++)
1290 ps[i].status = MT_PARAM_STATUS_OK;
1291
1292 bailout:
1293 return (error);
1294 }
1295 /*
1296 * Entry handlers generally only handle a single entry. Node handlers will
1297 * handle a contiguous range of parameters to set in a single call.
1298 */
1299 typedef enum {
1300 SA_PARAM_TYPE_ENTRY,
1301 SA_PARAM_TYPE_NODE
1302 } sa_param_type;
1303
1304 struct sa_param_ent {
1305 char *name;
1306 sa_param_type param_type;
1307 int (*set_func)(struct cam_periph *periph, struct mtparamset *ps,
1308 int num_params);
1309 } sa_param_table[] = {
1310 {"sili", SA_PARAM_TYPE_ENTRY, sasetsili },
1311 {"eot_warn", SA_PARAM_TYPE_ENTRY, saseteotwarn },
1312 {"protection.", SA_PARAM_TYPE_NODE, sasetprotents }
1313 };
1314
1315 static struct sa_param_ent *
safindparament(struct mtparamset * ps)1316 safindparament(struct mtparamset *ps)
1317 {
1318 unsigned int i;
1319
1320 for (i = 0; i < nitems(sa_param_table); i++){
1321 /*
1322 * For entries, we compare all of the characters. For
1323 * nodes, we only compare the first N characters. The node
1324 * handler will decode the rest.
1325 */
1326 if (sa_param_table[i].param_type == SA_PARAM_TYPE_ENTRY) {
1327 if (strcmp(ps->value_name, sa_param_table[i].name) != 0)
1328 continue;
1329 } else {
1330 if (strncmp(ps->value_name, sa_param_table[i].name,
1331 strlen(sa_param_table[i].name)) != 0)
1332 continue;
1333 }
1334 return (&sa_param_table[i]);
1335 }
1336
1337 return (NULL);
1338 }
1339
1340 /*
1341 * Go through a list of parameters, coalescing contiguous parameters with
1342 * the same parent node into a single call to a set_func.
1343 */
1344 static int
saparamsetlist(struct cam_periph * periph,struct mtsetlist * list,int need_copy)1345 saparamsetlist(struct cam_periph *periph, struct mtsetlist *list,
1346 int need_copy)
1347 {
1348 int i, contig_ents;
1349 int error;
1350 struct mtparamset *params, *first;
1351 struct sa_param_ent *first_ent;
1352
1353 error = 0;
1354 params = NULL;
1355
1356 if (list->num_params == 0)
1357 /* Nothing to do */
1358 goto bailout;
1359
1360 /*
1361 * Verify that the user has the correct structure size.
1362 */
1363 if ((list->num_params * sizeof(struct mtparamset)) !=
1364 list->param_len) {
1365 xpt_print(periph->path, "%s: length of params %d != "
1366 "sizeof(struct mtparamset) %zd * num_params %d\n",
1367 __func__, list->param_len, sizeof(struct mtparamset),
1368 list->num_params);
1369 error = EINVAL;
1370 goto bailout;
1371 }
1372
1373 if (need_copy != 0) {
1374 /*
1375 * XXX KDM will dropping the lock cause an issue here?
1376 */
1377 cam_periph_unlock(periph);
1378 params = malloc(list->param_len, M_SCSISA, M_WAITOK | M_ZERO);
1379 error = copyin(list->params, params, list->param_len);
1380 cam_periph_lock(periph);
1381
1382 if (error != 0)
1383 goto bailout;
1384 } else {
1385 params = list->params;
1386 }
1387
1388 contig_ents = 0;
1389 first = NULL;
1390 first_ent = NULL;
1391 for (i = 0; i < list->num_params; i++) {
1392 struct sa_param_ent *ent;
1393
1394 ent = safindparament(¶ms[i]);
1395 if (ent == NULL) {
1396 snprintf(params[i].error_str,
1397 sizeof(params[i].error_str),
1398 "%s: cannot find parameter %s", __func__,
1399 params[i].value_name);
1400 params[i].status = MT_PARAM_STATUS_ERROR;
1401 break;
1402 }
1403
1404 if (first != NULL) {
1405 if (first_ent == ent) {
1406 /*
1407 * We're still in a contiguous list of
1408 * parameters that can be handled by one
1409 * node handler.
1410 */
1411 contig_ents++;
1412 continue;
1413 } else {
1414 error = first_ent->set_func(periph, first,
1415 contig_ents);
1416 first = NULL;
1417 first_ent = NULL;
1418 contig_ents = 0;
1419 if (error != 0) {
1420 error = 0;
1421 break;
1422 }
1423 }
1424 }
1425 if (ent->param_type == SA_PARAM_TYPE_NODE) {
1426 first = ¶ms[i];
1427 first_ent = ent;
1428 contig_ents = 1;
1429 } else {
1430 error = ent->set_func(periph, ¶ms[i], 1);
1431 if (error != 0) {
1432 error = 0;
1433 break;
1434 }
1435 }
1436 }
1437 if (first != NULL)
1438 first_ent->set_func(periph, first, contig_ents);
1439
1440 bailout:
1441 if (need_copy != 0) {
1442 if (error != EFAULT) {
1443 cam_periph_unlock(periph);
1444 copyout(params, list->params, list->param_len);
1445 cam_periph_lock(periph);
1446 }
1447 free(params, M_SCSISA);
1448 }
1449 return (error);
1450 }
1451
1452 static int
sagetparams_common(struct cdev * dev,struct cam_periph * periph)1453 sagetparams_common(struct cdev *dev, struct cam_periph *periph)
1454 {
1455 struct sa_softc *softc;
1456 u_int8_t write_protect;
1457 int comp_enabled, comp_supported, error;
1458
1459 softc = (struct sa_softc *)periph->softc;
1460
1461 if (softc->open_pending_mount)
1462 return (0);
1463
1464 /* The control device may issue getparams() if there are no opens. */
1465 if (SA_IS_CTRL(dev) && (softc->flags & SA_FLAG_OPEN) != 0)
1466 return (0);
1467
1468 error = sagetparams(periph, SA_PARAM_ALL, &softc->media_blksize,
1469 &softc->media_density, &softc->media_numblks, &softc->buffer_mode,
1470 &write_protect, &softc->speed, &comp_supported, &comp_enabled,
1471 &softc->comp_algorithm, NULL, NULL, 0, 0);
1472 if (error)
1473 return (error);
1474 if (write_protect)
1475 softc->flags |= SA_FLAG_TAPE_WP;
1476 else
1477 softc->flags &= ~SA_FLAG_TAPE_WP;
1478 softc->flags &= ~SA_FLAG_COMPRESSION;
1479 if (comp_supported) {
1480 if (softc->saved_comp_algorithm == 0)
1481 softc->saved_comp_algorithm =
1482 softc->comp_algorithm;
1483 softc->flags |= SA_FLAG_COMP_SUPP;
1484 if (comp_enabled)
1485 softc->flags |= SA_FLAG_COMP_ENABLED;
1486 } else
1487 softc->flags |= SA_FLAG_COMP_UNSUPP;
1488
1489 return (0);
1490 }
1491
1492 #define PENDING_MOUNT_CHECK(softc, periph, dev) \
1493 if (softc->open_pending_mount) { \
1494 error = samount(periph, 0, dev); \
1495 if (error) { \
1496 break; \
1497 } \
1498 saprevent(periph, PR_PREVENT); \
1499 softc->open_pending_mount = 0; \
1500 }
1501
1502 static int
saioctl(struct cdev * dev,u_long cmd,caddr_t arg,int flag,struct thread * td)1503 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td)
1504 {
1505 struct cam_periph *periph;
1506 struct sa_softc *softc;
1507 scsi_space_code spaceop;
1508 int didlockperiph = 0;
1509 int mode;
1510 int error = 0;
1511
1512 mode = SAMODE(dev);
1513 error = 0; /* shut up gcc */
1514 spaceop = 0; /* shut up gcc */
1515
1516 periph = (struct cam_periph *)dev->si_drv1;
1517 cam_periph_lock(periph);
1518 softc = (struct sa_softc *)periph->softc;
1519
1520 /*
1521 * Check for control mode accesses. We allow MTIOCGET and
1522 * MTIOCERRSTAT (but need to be the only one open in order
1523 * to clear latched status), and MTSETBSIZE, MTSETDNSTY
1524 * and MTCOMP (but need to be the only one accessing this
1525 * device to run those).
1526 */
1527
1528 if (SA_IS_CTRL(dev)) {
1529 switch (cmd) {
1530 case MTIOCGETEOTMODEL:
1531 case MTIOCGET:
1532 case MTIOCEXTGET:
1533 case MTIOCPARAMGET:
1534 case MTIOCRBLIM:
1535 break;
1536 case MTIOCERRSTAT:
1537 /*
1538 * If the periph isn't already locked, lock it
1539 * so our MTIOCERRSTAT can reset latched error stats.
1540 *
1541 * If the periph is already locked, skip it because
1542 * we're just getting status and it'll be up to the
1543 * other thread that has this device open to do
1544 * an MTIOCERRSTAT that would clear latched status.
1545 */
1546 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) {
1547 error = cam_periph_hold(periph, PRIBIO|PCATCH);
1548 if (error != 0) {
1549 cam_periph_unlock(periph);
1550 return (error);
1551 }
1552 didlockperiph = 1;
1553 }
1554 break;
1555
1556 case MTIOCTOP:
1557 {
1558 struct mtop *mt = (struct mtop *) arg;
1559
1560 /*
1561 * Check to make sure it's an OP we can perform
1562 * with no media inserted.
1563 */
1564 switch (mt->mt_op) {
1565 case MTSETBSIZ:
1566 case MTSETDNSTY:
1567 case MTCOMP:
1568 mt = NULL;
1569 /* FALLTHROUGH */
1570 default:
1571 break;
1572 }
1573 if (mt != NULL) {
1574 break;
1575 }
1576 /* FALLTHROUGH */
1577 }
1578 case MTIOCSETEOTMODEL:
1579 /*
1580 * We need to acquire the peripheral here rather
1581 * than at open time because we are sharing writable
1582 * access to data structures.
1583 */
1584 error = cam_periph_hold(periph, PRIBIO|PCATCH);
1585 if (error != 0) {
1586 cam_periph_unlock(periph);
1587 return (error);
1588 }
1589 didlockperiph = 1;
1590 break;
1591
1592 default:
1593 cam_periph_unlock(periph);
1594 return (EINVAL);
1595 }
1596 }
1597
1598 /*
1599 * Find the device that the user is talking about
1600 */
1601 switch (cmd) {
1602 case MTIOCGET:
1603 {
1604 struct mtget *g = (struct mtget *)arg;
1605
1606 error = sagetparams_common(dev, periph);
1607 if (error)
1608 break;
1609 bzero(g, sizeof(struct mtget));
1610 g->mt_type = MT_ISAR;
1611 if (softc->flags & SA_FLAG_COMP_UNSUPP) {
1612 g->mt_comp = MT_COMP_UNSUPP;
1613 g->mt_comp0 = MT_COMP_UNSUPP;
1614 g->mt_comp1 = MT_COMP_UNSUPP;
1615 g->mt_comp2 = MT_COMP_UNSUPP;
1616 g->mt_comp3 = MT_COMP_UNSUPP;
1617 } else {
1618 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) {
1619 g->mt_comp = MT_COMP_DISABLED;
1620 } else {
1621 g->mt_comp = softc->comp_algorithm;
1622 }
1623 g->mt_comp0 = softc->comp_algorithm;
1624 g->mt_comp1 = softc->comp_algorithm;
1625 g->mt_comp2 = softc->comp_algorithm;
1626 g->mt_comp3 = softc->comp_algorithm;
1627 }
1628 g->mt_density = softc->media_density;
1629 g->mt_density0 = softc->media_density;
1630 g->mt_density1 = softc->media_density;
1631 g->mt_density2 = softc->media_density;
1632 g->mt_density3 = softc->media_density;
1633 g->mt_blksiz = softc->media_blksize;
1634 g->mt_blksiz0 = softc->media_blksize;
1635 g->mt_blksiz1 = softc->media_blksize;
1636 g->mt_blksiz2 = softc->media_blksize;
1637 g->mt_blksiz3 = softc->media_blksize;
1638 g->mt_fileno = softc->fileno;
1639 g->mt_blkno = softc->blkno;
1640 g->mt_dsreg = (short) softc->dsreg;
1641 /*
1642 * Yes, we know that this is likely to overflow
1643 */
1644 if (softc->last_resid_was_io) {
1645 if ((g->mt_resid = (short) softc->last_io_resid) != 0) {
1646 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
1647 softc->last_io_resid = 0;
1648 }
1649 }
1650 } else {
1651 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) {
1652 if (SA_IS_CTRL(dev) == 0 || didlockperiph) {
1653 softc->last_ctl_resid = 0;
1654 }
1655 }
1656 }
1657 error = 0;
1658 break;
1659 }
1660 case MTIOCEXTGET:
1661 case MTIOCPARAMGET:
1662 {
1663 struct mtextget *g = (struct mtextget *)arg;
1664 char *tmpstr2;
1665 struct sbuf *sb;
1666
1667 /*
1668 * Report drive status using an XML format.
1669 */
1670
1671 /*
1672 * XXX KDM will dropping the lock cause any problems here?
1673 */
1674 cam_periph_unlock(periph);
1675 sb = sbuf_new(NULL, NULL, g->alloc_len, SBUF_FIXEDLEN);
1676 if (sb == NULL) {
1677 g->status = MT_EXT_GET_ERROR;
1678 snprintf(g->error_str, sizeof(g->error_str),
1679 "Unable to allocate %d bytes for status info",
1680 g->alloc_len);
1681 cam_periph_lock(periph);
1682 goto extget_bailout;
1683 }
1684 cam_periph_lock(periph);
1685
1686 if (cmd == MTIOCEXTGET)
1687 error = saextget(dev, periph, sb, g);
1688 else
1689 error = saparamget(softc, sb);
1690
1691 if (error != 0)
1692 goto extget_bailout;
1693
1694 error = sbuf_finish(sb);
1695 if (error == ENOMEM) {
1696 g->status = MT_EXT_GET_NEED_MORE_SPACE;
1697 error = 0;
1698 } else if (error != 0) {
1699 g->status = MT_EXT_GET_ERROR;
1700 snprintf(g->error_str, sizeof(g->error_str),
1701 "Error %d returned from sbuf_finish()", error);
1702 } else
1703 g->status = MT_EXT_GET_OK;
1704
1705 error = 0;
1706 tmpstr2 = sbuf_data(sb);
1707 g->fill_len = strlen(tmpstr2) + 1;
1708 cam_periph_unlock(periph);
1709
1710 error = copyout(tmpstr2, g->status_xml, g->fill_len);
1711
1712 cam_periph_lock(periph);
1713
1714 extget_bailout:
1715 sbuf_delete(sb);
1716 break;
1717 }
1718 case MTIOCPARAMSET:
1719 {
1720 struct mtsetlist list;
1721 struct mtparamset *ps = (struct mtparamset *)arg;
1722
1723 bzero(&list, sizeof(list));
1724 list.num_params = 1;
1725 list.param_len = sizeof(*ps);
1726 list.params = ps;
1727
1728 error = saparamsetlist(periph, &list, /*need_copy*/ 0);
1729 break;
1730 }
1731 case MTIOCSETLIST:
1732 {
1733 struct mtsetlist *list = (struct mtsetlist *)arg;
1734
1735 error = saparamsetlist(periph, list, /*need_copy*/ 1);
1736 break;
1737 }
1738 case MTIOCERRSTAT:
1739 {
1740 struct scsi_tape_errors *sep =
1741 &((union mterrstat *)arg)->scsi_errstat;
1742
1743 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1744 ("saioctl: MTIOCERRSTAT\n"));
1745
1746 bzero(sep, sizeof(*sep));
1747 sep->io_resid = softc->last_io_resid;
1748 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense,
1749 sizeof (sep->io_sense));
1750 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb,
1751 sizeof (sep->io_cdb));
1752 sep->ctl_resid = softc->last_ctl_resid;
1753 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense,
1754 sizeof (sep->ctl_sense));
1755 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb,
1756 sizeof (sep->ctl_cdb));
1757
1758 if ((SA_IS_CTRL(dev) == 0 && !softc->open_pending_mount) ||
1759 didlockperiph)
1760 bzero((caddr_t) &softc->errinfo,
1761 sizeof (softc->errinfo));
1762 error = 0;
1763 break;
1764 }
1765 case MTIOCTOP:
1766 {
1767 struct mtop *mt;
1768 int count;
1769
1770 PENDING_MOUNT_CHECK(softc, periph, dev);
1771
1772 mt = (struct mtop *)arg;
1773
1774
1775 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1776 ("saioctl: op=0x%x count=0x%x\n",
1777 mt->mt_op, mt->mt_count));
1778
1779 count = mt->mt_count;
1780 switch (mt->mt_op) {
1781 case MTWEOF: /* write an end-of-file marker */
1782 /*
1783 * We don't need to clear the SA_FLAG_TAPE_WRITTEN
1784 * flag because by keeping track of filemarks
1785 * we have last written we know whether or not
1786 * we need to write more when we close the device.
1787 */
1788 error = sawritefilemarks(periph, count, FALSE, FALSE);
1789 break;
1790 case MTWEOFI:
1791 /* write an end-of-file marker without waiting */
1792 error = sawritefilemarks(periph, count, FALSE, TRUE);
1793 break;
1794 case MTWSS: /* write a setmark */
1795 error = sawritefilemarks(periph, count, TRUE, FALSE);
1796 break;
1797 case MTBSR: /* backward space record */
1798 case MTFSR: /* forward space record */
1799 case MTBSF: /* backward space file */
1800 case MTFSF: /* forward space file */
1801 case MTBSS: /* backward space setmark */
1802 case MTFSS: /* forward space setmark */
1803 case MTEOD: /* space to end of recorded medium */
1804 {
1805 int nmarks;
1806
1807 spaceop = SS_FILEMARKS;
1808 nmarks = softc->filemarks;
1809 error = sacheckeod(periph);
1810 if (error) {
1811 xpt_print(periph->path,
1812 "EOD check prior to spacing failed\n");
1813 softc->flags |= SA_FLAG_EIO_PENDING;
1814 break;
1815 }
1816 nmarks -= softc->filemarks;
1817 switch(mt->mt_op) {
1818 case MTBSR:
1819 count = -count;
1820 /* FALLTHROUGH */
1821 case MTFSR:
1822 spaceop = SS_BLOCKS;
1823 break;
1824 case MTBSF:
1825 count = -count;
1826 /* FALLTHROUGH */
1827 case MTFSF:
1828 break;
1829 case MTBSS:
1830 count = -count;
1831 /* FALLTHROUGH */
1832 case MTFSS:
1833 spaceop = SS_SETMARKS;
1834 break;
1835 case MTEOD:
1836 spaceop = SS_EOD;
1837 count = 0;
1838 nmarks = 0;
1839 break;
1840 default:
1841 error = EINVAL;
1842 break;
1843 }
1844 if (error)
1845 break;
1846
1847 nmarks = softc->filemarks;
1848 /*
1849 * XXX: Why are we checking again?
1850 */
1851 error = sacheckeod(periph);
1852 if (error)
1853 break;
1854 nmarks -= softc->filemarks;
1855 error = saspace(periph, count - nmarks, spaceop);
1856 /*
1857 * At this point, clear that we've written the tape
1858 * and that we've written any filemarks. We really
1859 * don't know what the applications wishes to do next-
1860 * the sacheckeod's will make sure we terminated the
1861 * tape correctly if we'd been writing, but the next
1862 * action the user application takes will set again
1863 * whether we need to write filemarks.
1864 */
1865 softc->flags &=
1866 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1867 softc->filemarks = 0;
1868 break;
1869 }
1870 case MTREW: /* rewind */
1871 PENDING_MOUNT_CHECK(softc, periph, dev);
1872 (void) sacheckeod(periph);
1873 error = sarewind(periph);
1874 /* see above */
1875 softc->flags &=
1876 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1877 softc->flags &= ~SA_FLAG_ERR_PENDING;
1878 softc->filemarks = 0;
1879 break;
1880 case MTERASE: /* erase */
1881 PENDING_MOUNT_CHECK(softc, periph, dev);
1882 error = saerase(periph, count);
1883 softc->flags &=
1884 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1885 softc->flags &= ~SA_FLAG_ERR_PENDING;
1886 break;
1887 case MTRETENS: /* re-tension tape */
1888 PENDING_MOUNT_CHECK(softc, periph, dev);
1889 error = saretension(periph);
1890 softc->flags &=
1891 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
1892 softc->flags &= ~SA_FLAG_ERR_PENDING;
1893 break;
1894 case MTOFFL: /* rewind and put the drive offline */
1895
1896 PENDING_MOUNT_CHECK(softc, periph, dev);
1897
1898 (void) sacheckeod(periph);
1899 /* see above */
1900 softc->flags &= ~SA_FLAG_TAPE_WRITTEN;
1901 softc->filemarks = 0;
1902
1903 error = sarewind(periph);
1904 /* clear the frozen flag anyway */
1905 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
1906
1907 /*
1908 * Be sure to allow media removal before ejecting.
1909 */
1910
1911 saprevent(periph, PR_ALLOW);
1912 if (error == 0) {
1913 error = saloadunload(periph, FALSE);
1914 if (error == 0) {
1915 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
1916 }
1917 }
1918 break;
1919
1920 case MTLOAD:
1921 error = saloadunload(periph, TRUE);
1922 break;
1923 case MTNOP: /* no operation, sets status only */
1924 case MTCACHE: /* enable controller cache */
1925 case MTNOCACHE: /* disable controller cache */
1926 error = 0;
1927 break;
1928
1929 case MTSETBSIZ: /* Set block size for device */
1930
1931 PENDING_MOUNT_CHECK(softc, periph, dev);
1932
1933 if ((softc->sili != 0)
1934 && (count != 0)) {
1935 xpt_print(periph->path, "Can't enter fixed "
1936 "block mode with SILI enabled\n");
1937 error = EINVAL;
1938 break;
1939 }
1940 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count,
1941 0, 0, 0);
1942 if (error == 0) {
1943 softc->last_media_blksize =
1944 softc->media_blksize;
1945 softc->media_blksize = count;
1946 if (count) {
1947 softc->flags |= SA_FLAG_FIXED;
1948 if (powerof2(count)) {
1949 softc->blk_shift =
1950 ffs(count) - 1;
1951 softc->blk_mask = count - 1;
1952 } else {
1953 softc->blk_mask = ~0;
1954 softc->blk_shift = 0;
1955 }
1956 /*
1957 * Make the user's desire 'persistent'.
1958 */
1959 softc->quirks &= ~SA_QUIRK_VARIABLE;
1960 softc->quirks |= SA_QUIRK_FIXED;
1961 } else {
1962 softc->flags &= ~SA_FLAG_FIXED;
1963 if (softc->max_blk == 0) {
1964 softc->max_blk = ~0;
1965 }
1966 softc->blk_shift = 0;
1967 if (softc->blk_gran != 0) {
1968 softc->blk_mask =
1969 softc->blk_gran - 1;
1970 } else {
1971 softc->blk_mask = 0;
1972 }
1973 /*
1974 * Make the user's desire 'persistent'.
1975 */
1976 softc->quirks |= SA_QUIRK_VARIABLE;
1977 softc->quirks &= ~SA_QUIRK_FIXED;
1978 }
1979 }
1980 break;
1981 case MTSETDNSTY: /* Set density for device and mode */
1982 PENDING_MOUNT_CHECK(softc, periph, dev);
1983
1984 if (count > UCHAR_MAX) {
1985 error = EINVAL;
1986 break;
1987 } else {
1988 error = sasetparams(periph, SA_PARAM_DENSITY,
1989 0, count, 0, 0);
1990 }
1991 break;
1992 case MTCOMP: /* enable compression */
1993 PENDING_MOUNT_CHECK(softc, periph, dev);
1994 /*
1995 * Some devices don't support compression, and
1996 * don't like it if you ask them for the
1997 * compression page.
1998 */
1999 if ((softc->quirks & SA_QUIRK_NOCOMP) ||
2000 (softc->flags & SA_FLAG_COMP_UNSUPP)) {
2001 error = ENODEV;
2002 break;
2003 }
2004 error = sasetparams(periph, SA_PARAM_COMPRESSION,
2005 0, 0, count, SF_NO_PRINT);
2006 break;
2007 default:
2008 error = EINVAL;
2009 }
2010 break;
2011 }
2012 case MTIOCIEOT:
2013 case MTIOCEEOT:
2014 error = 0;
2015 break;
2016 case MTIOCRDSPOS:
2017 PENDING_MOUNT_CHECK(softc, periph, dev);
2018 error = sardpos(periph, 0, (u_int32_t *) arg);
2019 break;
2020 case MTIOCRDHPOS:
2021 PENDING_MOUNT_CHECK(softc, periph, dev);
2022 error = sardpos(periph, 1, (u_int32_t *) arg);
2023 break;
2024 case MTIOCSLOCATE:
2025 case MTIOCHLOCATE: {
2026 struct mtlocate locate_info;
2027 int hard;
2028
2029 bzero(&locate_info, sizeof(locate_info));
2030 locate_info.logical_id = *((uint32_t *)arg);
2031 if (cmd == MTIOCSLOCATE)
2032 hard = 0;
2033 else
2034 hard = 1;
2035
2036 PENDING_MOUNT_CHECK(softc, periph, dev);
2037
2038 error = sasetpos(periph, hard, &locate_info);
2039 break;
2040 }
2041 case MTIOCEXTLOCATE:
2042 PENDING_MOUNT_CHECK(softc, periph, dev);
2043 error = sasetpos(periph, /*hard*/ 0, (struct mtlocate *)arg);
2044 softc->flags &=
2045 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN);
2046 softc->flags &= ~SA_FLAG_ERR_PENDING;
2047 softc->filemarks = 0;
2048 break;
2049 case MTIOCGETEOTMODEL:
2050 error = 0;
2051 if (softc->quirks & SA_QUIRK_1FM)
2052 mode = 1;
2053 else
2054 mode = 2;
2055 *((u_int32_t *) arg) = mode;
2056 break;
2057 case MTIOCSETEOTMODEL:
2058 error = 0;
2059 switch (*((u_int32_t *) arg)) {
2060 case 1:
2061 softc->quirks &= ~SA_QUIRK_2FM;
2062 softc->quirks |= SA_QUIRK_1FM;
2063 break;
2064 case 2:
2065 softc->quirks &= ~SA_QUIRK_1FM;
2066 softc->quirks |= SA_QUIRK_2FM;
2067 break;
2068 default:
2069 error = EINVAL;
2070 break;
2071 }
2072 break;
2073 case MTIOCRBLIM: {
2074 struct mtrblim *rblim;
2075
2076 rblim = (struct mtrblim *)arg;
2077
2078 rblim->granularity = softc->blk_gran;
2079 rblim->min_block_length = softc->min_blk;
2080 rblim->max_block_length = softc->max_blk;
2081 break;
2082 }
2083 default:
2084 error = cam_periph_ioctl(periph, cmd, arg, saerror);
2085 break;
2086 }
2087
2088 /*
2089 * Check to see if we cleared a frozen state
2090 */
2091 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) {
2092 switch(cmd) {
2093 case MTIOCRDSPOS:
2094 case MTIOCRDHPOS:
2095 case MTIOCSLOCATE:
2096 case MTIOCHLOCATE:
2097 /*
2098 * XXX KDM look at this.
2099 */
2100 softc->fileno = (daddr_t) -1;
2101 softc->blkno = (daddr_t) -1;
2102 softc->rep_blkno = (daddr_t) -1;
2103 softc->rep_fileno = (daddr_t) -1;
2104 softc->partition = (daddr_t) -1;
2105 softc->flags &= ~SA_FLAG_TAPE_FROZEN;
2106 xpt_print(periph->path,
2107 "tape state now unfrozen.\n");
2108 break;
2109 default:
2110 break;
2111 }
2112 }
2113 if (didlockperiph) {
2114 cam_periph_unhold(periph);
2115 }
2116 cam_periph_unlock(periph);
2117 return (error);
2118 }
2119
2120 static void
sainit(void)2121 sainit(void)
2122 {
2123 cam_status status;
2124
2125 /*
2126 * Install a global async callback.
2127 */
2128 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL);
2129
2130 if (status != CAM_REQ_CMP) {
2131 printf("sa: Failed to attach master async callback "
2132 "due to status 0x%x!\n", status);
2133 }
2134 }
2135
2136 static void
sadevgonecb(void * arg)2137 sadevgonecb(void *arg)
2138 {
2139 struct cam_periph *periph;
2140 struct mtx *mtx;
2141 struct sa_softc *softc;
2142
2143 periph = (struct cam_periph *)arg;
2144 softc = (struct sa_softc *)periph->softc;
2145
2146 mtx = cam_periph_mtx(periph);
2147 mtx_lock(mtx);
2148
2149 softc->num_devs_to_destroy--;
2150 if (softc->num_devs_to_destroy == 0) {
2151 int i;
2152
2153 /*
2154 * When we have gotten all of our callbacks, we will get
2155 * no more close calls from devfs. So if we have any
2156 * dangling opens, we need to release the reference held
2157 * for that particular context.
2158 */
2159 for (i = 0; i < softc->open_count; i++)
2160 cam_periph_release_locked(periph);
2161
2162 softc->open_count = 0;
2163
2164 /*
2165 * Release the reference held for devfs, all of our
2166 * instances are gone now.
2167 */
2168 cam_periph_release_locked(periph);
2169 }
2170
2171 /*
2172 * We reference the lock directly here, instead of using
2173 * cam_periph_unlock(). The reason is that the final call to
2174 * cam_periph_release_locked() above could result in the periph
2175 * getting freed. If that is the case, dereferencing the periph
2176 * with a cam_periph_unlock() call would cause a page fault.
2177 */
2178 mtx_unlock(mtx);
2179 }
2180
2181 static void
saoninvalidate(struct cam_periph * periph)2182 saoninvalidate(struct cam_periph *periph)
2183 {
2184 struct sa_softc *softc;
2185
2186 softc = (struct sa_softc *)periph->softc;
2187
2188 /*
2189 * De-register any async callbacks.
2190 */
2191 xpt_register_async(0, saasync, periph, periph->path);
2192
2193 softc->flags |= SA_FLAG_INVALID;
2194
2195 /*
2196 * Return all queued I/O with ENXIO.
2197 * XXX Handle any transactions queued to the card
2198 * with XPT_ABORT_CCB.
2199 */
2200 bioq_flush(&softc->bio_queue, NULL, ENXIO);
2201 softc->queue_count = 0;
2202
2203 /*
2204 * Tell devfs that all of our devices have gone away, and ask for a
2205 * callback when it has cleaned up its state.
2206 */
2207 destroy_dev_sched_cb(softc->devs.ctl_dev, sadevgonecb, periph);
2208 destroy_dev_sched_cb(softc->devs.r_dev, sadevgonecb, periph);
2209 destroy_dev_sched_cb(softc->devs.nr_dev, sadevgonecb, periph);
2210 destroy_dev_sched_cb(softc->devs.er_dev, sadevgonecb, periph);
2211 }
2212
2213 static void
sacleanup(struct cam_periph * periph)2214 sacleanup(struct cam_periph *periph)
2215 {
2216 struct sa_softc *softc;
2217
2218 softc = (struct sa_softc *)periph->softc;
2219
2220 cam_periph_unlock(periph);
2221
2222 if ((softc->flags & SA_FLAG_SCTX_INIT) != 0
2223 && sysctl_ctx_free(&softc->sysctl_ctx) != 0)
2224 xpt_print(periph->path, "can't remove sysctl context\n");
2225
2226 cam_periph_lock(periph);
2227
2228 devstat_remove_entry(softc->device_stats);
2229
2230 free(softc, M_SCSISA);
2231 }
2232
2233 static void
saasync(void * callback_arg,u_int32_t code,struct cam_path * path,void * arg)2234 saasync(void *callback_arg, u_int32_t code,
2235 struct cam_path *path, void *arg)
2236 {
2237 struct cam_periph *periph;
2238
2239 periph = (struct cam_periph *)callback_arg;
2240 switch (code) {
2241 case AC_FOUND_DEVICE:
2242 {
2243 struct ccb_getdev *cgd;
2244 cam_status status;
2245
2246 cgd = (struct ccb_getdev *)arg;
2247 if (cgd == NULL)
2248 break;
2249
2250 if (cgd->protocol != PROTO_SCSI)
2251 break;
2252 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED)
2253 break;
2254 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL)
2255 break;
2256
2257 /*
2258 * Allocate a peripheral instance for
2259 * this device and start the probe
2260 * process.
2261 */
2262 status = cam_periph_alloc(saregister, saoninvalidate,
2263 sacleanup, sastart,
2264 "sa", CAM_PERIPH_BIO, path,
2265 saasync, AC_FOUND_DEVICE, cgd);
2266
2267 if (status != CAM_REQ_CMP
2268 && status != CAM_REQ_INPROG)
2269 printf("saasync: Unable to probe new device "
2270 "due to status 0x%x\n", status);
2271 break;
2272 }
2273 default:
2274 cam_periph_async(periph, code, path, arg);
2275 break;
2276 }
2277 }
2278
2279 static void
sasetupdev(struct sa_softc * softc,struct cdev * dev)2280 sasetupdev(struct sa_softc *softc, struct cdev *dev)
2281 {
2282
2283 dev->si_iosize_max = softc->maxio;
2284 dev->si_flags |= softc->si_flags;
2285 /*
2286 * Keep a count of how many non-alias devices we have created,
2287 * so we can make sure we clean them all up on shutdown. Aliases
2288 * are cleaned up when we destroy the device they're an alias for.
2289 */
2290 if ((dev->si_flags & SI_ALIAS) == 0)
2291 softc->num_devs_to_destroy++;
2292 }
2293
2294 static void
sasysctlinit(void * context,int pending)2295 sasysctlinit(void *context, int pending)
2296 {
2297 struct cam_periph *periph;
2298 struct sa_softc *softc;
2299 char tmpstr[32], tmpstr2[16];
2300
2301 periph = (struct cam_periph *)context;
2302 /*
2303 * If the periph is invalid, no need to setup the sysctls.
2304 */
2305 if (periph->flags & CAM_PERIPH_INVALID)
2306 goto bailout;
2307
2308 softc = (struct sa_softc *)periph->softc;
2309
2310 snprintf(tmpstr, sizeof(tmpstr), "CAM SA unit %d", periph->unit_number);
2311 snprintf(tmpstr2, sizeof(tmpstr2), "%u", periph->unit_number);
2312
2313 sysctl_ctx_init(&softc->sysctl_ctx);
2314 softc->flags |= SA_FLAG_SCTX_INIT;
2315 softc->sysctl_tree = SYSCTL_ADD_NODE_WITH_LABEL(&softc->sysctl_ctx,
2316 SYSCTL_STATIC_CHILDREN(_kern_cam_sa), OID_AUTO, tmpstr2,
2317 CTLFLAG_RD, 0, tmpstr, "device_index");
2318 if (softc->sysctl_tree == NULL)
2319 goto bailout;
2320
2321 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
2322 OID_AUTO, "allow_io_split", CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
2323 &softc->allow_io_split, 0, "Allow Splitting I/O");
2324 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
2325 OID_AUTO, "maxio", CTLFLAG_RD,
2326 &softc->maxio, 0, "Maximum I/O size");
2327 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
2328 OID_AUTO, "cpi_maxio", CTLFLAG_RD,
2329 &softc->cpi_maxio, 0, "Maximum Controller I/O size");
2330 SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
2331 OID_AUTO, "inject_eom", CTLFLAG_RW,
2332 &softc->inject_eom, 0, "Queue EOM for the next write/read");
2333
2334 bailout:
2335 /*
2336 * Release the reference that was held when this task was enqueued.
2337 */
2338 cam_periph_release(periph);
2339 }
2340
2341 static cam_status
saregister(struct cam_periph * periph,void * arg)2342 saregister(struct cam_periph *periph, void *arg)
2343 {
2344 struct sa_softc *softc;
2345 struct ccb_getdev *cgd;
2346 struct ccb_pathinq cpi;
2347 struct make_dev_args args;
2348 caddr_t match;
2349 char tmpstr[80];
2350 int error;
2351
2352 cgd = (struct ccb_getdev *)arg;
2353 if (cgd == NULL) {
2354 printf("saregister: no getdev CCB, can't register device\n");
2355 return (CAM_REQ_CMP_ERR);
2356 }
2357
2358 softc = (struct sa_softc *)
2359 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO);
2360 if (softc == NULL) {
2361 printf("saregister: Unable to probe new device. "
2362 "Unable to allocate softc\n");
2363 return (CAM_REQ_CMP_ERR);
2364 }
2365 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data);
2366 softc->state = SA_STATE_NORMAL;
2367 softc->fileno = (daddr_t) -1;
2368 softc->blkno = (daddr_t) -1;
2369 softc->rep_fileno = (daddr_t) -1;
2370 softc->rep_blkno = (daddr_t) -1;
2371 softc->partition = (daddr_t) -1;
2372 softc->bop = -1;
2373 softc->eop = -1;
2374 softc->bpew = -1;
2375
2376 bioq_init(&softc->bio_queue);
2377 softc->periph = periph;
2378 periph->softc = softc;
2379
2380 /*
2381 * See if this device has any quirks.
2382 */
2383 match = cam_quirkmatch((caddr_t)&cgd->inq_data,
2384 (caddr_t)sa_quirk_table,
2385 nitems(sa_quirk_table),
2386 sizeof(*sa_quirk_table), scsi_inquiry_match);
2387
2388 if (match != NULL) {
2389 softc->quirks = ((struct sa_quirk_entry *)match)->quirks;
2390 softc->last_media_blksize =
2391 ((struct sa_quirk_entry *)match)->prefblk;
2392 } else
2393 softc->quirks = SA_QUIRK_NONE;
2394
2395 /*
2396 * Long format data for READ POSITION was introduced in SSC, which
2397 * was after SCSI-2. (Roughly equivalent to SCSI-3.) If the drive
2398 * reports that it is SCSI-2 or older, it is unlikely to support
2399 * long position data, but it might. Some drives from that era
2400 * claim to be SCSI-2, but do support long position information.
2401 * So, instead of immediately disabling long position information
2402 * for SCSI-2 devices, we'll try one pass through sagetpos(), and
2403 * then disable long position information if we get an error.
2404 */
2405 if (cgd->inq_data.version <= SCSI_REV_CCS)
2406 softc->quirks |= SA_QUIRK_NO_LONG_POS;
2407
2408 if (cgd->inq_data.spc3_flags & SPC3_SID_PROTECT) {
2409 struct ccb_dev_advinfo cdai;
2410 struct scsi_vpd_extended_inquiry_data ext_inq;
2411
2412 bzero(&ext_inq, sizeof(ext_inq));
2413
2414 xpt_setup_ccb(&cdai.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
2415
2416 cdai.ccb_h.func_code = XPT_DEV_ADVINFO;
2417 cdai.flags = CDAI_FLAG_NONE;
2418 cdai.buftype = CDAI_TYPE_EXT_INQ;
2419 cdai.bufsiz = sizeof(ext_inq);
2420 cdai.buf = (uint8_t *)&ext_inq;
2421 xpt_action((union ccb *)&cdai);
2422
2423 if ((cdai.ccb_h.status & CAM_DEV_QFRZN) != 0)
2424 cam_release_devq(cdai.ccb_h.path, 0, 0, 0, FALSE);
2425 if ((cdai.ccb_h.status == CAM_REQ_CMP)
2426 && (ext_inq.flags1 & SVPD_EID_SA_SPT_LBP))
2427 softc->flags |= SA_FLAG_PROTECT_SUPP;
2428 }
2429
2430 xpt_path_inq(&cpi, periph->path);
2431
2432 /*
2433 * The SA driver supports a blocksize, but we don't know the
2434 * blocksize until we media is inserted. So, set a flag to
2435 * indicate that the blocksize is unavailable right now.
2436 */
2437 cam_periph_unlock(periph);
2438 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0,
2439 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) |
2440 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE);
2441
2442 /*
2443 * Load the default value that is either compiled in, or loaded
2444 * in the global kern.cam.sa.allow_io_split tunable.
2445 */
2446 softc->allow_io_split = sa_allow_io_split;
2447
2448 /*
2449 * Load a per-instance tunable, if it exists. NOTE that this
2450 * tunable WILL GO AWAY in FreeBSD 11.0.
2451 */
2452 snprintf(tmpstr, sizeof(tmpstr), "kern.cam.sa.%u.allow_io_split",
2453 periph->unit_number);
2454 TUNABLE_INT_FETCH(tmpstr, &softc->allow_io_split);
2455
2456 /*
2457 * If maxio isn't set, we fall back to DFLTPHYS. Otherwise we take
2458 * the smaller of cpi.maxio or MAXPHYS.
2459 */
2460 if (cpi.maxio == 0)
2461 softc->maxio = DFLTPHYS;
2462 else if (cpi.maxio > MAXPHYS)
2463 softc->maxio = MAXPHYS;
2464 else
2465 softc->maxio = cpi.maxio;
2466
2467 /*
2468 * Record the controller's maximum I/O size so we can report it to
2469 * the user later.
2470 */
2471 softc->cpi_maxio = cpi.maxio;
2472
2473 /*
2474 * By default we tell physio that we do not want our I/O split.
2475 * The user needs to have a 1:1 mapping between the size of his
2476 * write to a tape character device and the size of the write
2477 * that actually goes down to the drive.
2478 */
2479 if (softc->allow_io_split == 0)
2480 softc->si_flags = SI_NOSPLIT;
2481 else
2482 softc->si_flags = 0;
2483
2484 TASK_INIT(&softc->sysctl_task, 0, sasysctlinit, periph);
2485
2486 /*
2487 * If the SIM supports unmapped I/O, let physio know that we can
2488 * handle unmapped buffers.
2489 */
2490 if (cpi.hba_misc & PIM_UNMAPPED)
2491 softc->si_flags |= SI_UNMAPPED;
2492
2493 /*
2494 * Acquire a reference to the periph before we create the devfs
2495 * instances for it. We'll release this reference once the devfs
2496 * instances have been freed.
2497 */
2498 if (cam_periph_acquire(periph) != 0) {
2499 xpt_print(periph->path, "%s: lost periph during "
2500 "registration!\n", __func__);
2501 cam_periph_lock(periph);
2502 return (CAM_REQ_CMP_ERR);
2503 }
2504
2505 make_dev_args_init(&args);
2506 args.mda_devsw = &sa_cdevsw;
2507 args.mda_si_drv1 = softc->periph;
2508 args.mda_uid = UID_ROOT;
2509 args.mda_gid = GID_OPERATOR;
2510 args.mda_mode = 0660;
2511
2512 args.mda_unit = SAMINOR(SA_CTLDEV, SA_ATYPE_R);
2513 error = make_dev_s(&args, &softc->devs.ctl_dev, "%s%d.ctl",
2514 periph->periph_name, periph->unit_number);
2515 if (error != 0) {
2516 cam_periph_lock(periph);
2517 return (CAM_REQ_CMP_ERR);
2518 }
2519 sasetupdev(softc, softc->devs.ctl_dev);
2520
2521 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_R);
2522 error = make_dev_s(&args, &softc->devs.r_dev, "%s%d",
2523 periph->periph_name, periph->unit_number);
2524 if (error != 0) {
2525 cam_periph_lock(periph);
2526 return (CAM_REQ_CMP_ERR);
2527 }
2528 sasetupdev(softc, softc->devs.r_dev);
2529
2530 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_NR);
2531 error = make_dev_s(&args, &softc->devs.nr_dev, "n%s%d",
2532 periph->periph_name, periph->unit_number);
2533 if (error != 0) {
2534 cam_periph_lock(periph);
2535 return (CAM_REQ_CMP_ERR);
2536 }
2537 sasetupdev(softc, softc->devs.nr_dev);
2538
2539 args.mda_unit = SAMINOR(SA_NOT_CTLDEV, SA_ATYPE_ER);
2540 error = make_dev_s(&args, &softc->devs.er_dev, "e%s%d",
2541 periph->periph_name, periph->unit_number);
2542 if (error != 0) {
2543 cam_periph_lock(periph);
2544 return (CAM_REQ_CMP_ERR);
2545 }
2546 sasetupdev(softc, softc->devs.er_dev);
2547
2548 cam_periph_lock(periph);
2549
2550 softc->density_type_bits[0] = 0;
2551 softc->density_type_bits[1] = SRDS_MEDIA;
2552 softc->density_type_bits[2] = SRDS_MEDIUM_TYPE;
2553 softc->density_type_bits[3] = SRDS_MEDIUM_TYPE | SRDS_MEDIA;
2554 /*
2555 * Bump the peripheral refcount for the sysctl thread, in case we
2556 * get invalidated before the thread has a chance to run.
2557 */
2558 cam_periph_acquire(periph);
2559 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
2560
2561 /*
2562 * Add an async callback so that we get
2563 * notified if this device goes away.
2564 */
2565 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path);
2566
2567 xpt_announce_periph(periph, NULL);
2568 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING);
2569
2570 return (CAM_REQ_CMP);
2571 }
2572
2573 static void
sastart(struct cam_periph * periph,union ccb * start_ccb)2574 sastart(struct cam_periph *periph, union ccb *start_ccb)
2575 {
2576 struct sa_softc *softc;
2577
2578 softc = (struct sa_softc *)periph->softc;
2579
2580 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n"));
2581
2582
2583 switch (softc->state) {
2584 case SA_STATE_NORMAL:
2585 {
2586 /* Pull a buffer from the queue and get going on it */
2587 struct bio *bp;
2588
2589 /*
2590 * See if there is a buf with work for us to do..
2591 */
2592 bp = bioq_first(&softc->bio_queue);
2593 if (bp == NULL) {
2594 xpt_release_ccb(start_ccb);
2595 } else if (((softc->flags & SA_FLAG_ERR_PENDING) != 0)
2596 || (softc->inject_eom != 0)) {
2597 struct bio *done_bp;
2598
2599 if (softc->inject_eom != 0) {
2600 softc->flags |= SA_FLAG_EOM_PENDING;
2601 softc->inject_eom = 0;
2602 /*
2603 * If we're injecting EOM for writes, we
2604 * need to keep PEWS set for 3 queries
2605 * to cover 2 position requests from the
2606 * kernel via sagetpos(), and then allow
2607 * for one for the user to see the BPEW
2608 * flag (e.g. via mt status). After that,
2609 * it will be cleared.
2610 */
2611 if (bp->bio_cmd == BIO_WRITE)
2612 softc->set_pews_status = 3;
2613 else
2614 softc->set_pews_status = 1;
2615 }
2616 again:
2617 softc->queue_count--;
2618 bioq_remove(&softc->bio_queue, bp);
2619 bp->bio_resid = bp->bio_bcount;
2620 done_bp = bp;
2621 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
2622 /*
2623 * We have two different behaviors for
2624 * writes when we hit either Early Warning
2625 * or the PEWZ (Programmable Early Warning
2626 * Zone). The default behavior is that
2627 * for all writes that are currently
2628 * queued after the write where we saw the
2629 * early warning, we will return the write
2630 * with the residual equal to the count.
2631 * i.e. tell the application that 0 bytes
2632 * were written.
2633 *
2634 * The alternate behavior, which is enabled
2635 * when eot_warn is set, is that in
2636 * addition to setting the residual equal
2637 * to the count, we will set the error
2638 * to ENOSPC.
2639 *
2640 * In either case, once queued writes are
2641 * cleared out, we clear the error flag
2642 * (see below) and the application is free to
2643 * attempt to write more.
2644 */
2645 if (softc->eot_warn != 0) {
2646 bp->bio_flags |= BIO_ERROR;
2647 bp->bio_error = ENOSPC;
2648 } else
2649 bp->bio_error = 0;
2650 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
2651 /*
2652 * This can only happen if we're reading
2653 * in fixed length mode. In this case,
2654 * we dump the rest of the list the
2655 * same way.
2656 */
2657 bp->bio_error = 0;
2658 if (bioq_first(&softc->bio_queue) != NULL) {
2659 biodone(done_bp);
2660 goto again;
2661 }
2662 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
2663 bp->bio_error = EIO;
2664 bp->bio_flags |= BIO_ERROR;
2665 }
2666 bp = bioq_first(&softc->bio_queue);
2667 /*
2668 * Only if we have no other buffers queued up
2669 * do we clear the pending error flag.
2670 */
2671 if (bp == NULL)
2672 softc->flags &= ~SA_FLAG_ERR_PENDING;
2673 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2674 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, "
2675 "%d more buffers queued up\n",
2676 (softc->flags & SA_FLAG_ERR_PENDING),
2677 (bp != NULL)? "not " : " ", softc->queue_count));
2678 xpt_release_ccb(start_ccb);
2679 biodone(done_bp);
2680 } else {
2681 u_int32_t length;
2682
2683 bioq_remove(&softc->bio_queue, bp);
2684 softc->queue_count--;
2685
2686 length = bp->bio_bcount;
2687
2688 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2689 if (softc->blk_shift != 0) {
2690 length = length >> softc->blk_shift;
2691 } else if (softc->media_blksize != 0) {
2692 length = length / softc->media_blksize;
2693 } else {
2694 bp->bio_error = EIO;
2695 xpt_print(periph->path, "zero blocksize"
2696 " for FIXED length writes?\n");
2697 biodone(bp);
2698 break;
2699 }
2700 #if 0
2701 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
2702 ("issuing a %d fixed record %s\n",
2703 length, (bp->bio_cmd == BIO_READ)? "read" :
2704 "write"));
2705 #endif
2706 } else {
2707 #if 0
2708 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO,
2709 ("issuing a %d variable byte %s\n",
2710 length, (bp->bio_cmd == BIO_READ)? "read" :
2711 "write"));
2712 #endif
2713 }
2714 devstat_start_transaction_bio(softc->device_stats, bp);
2715 /*
2716 * Some people have theorized that we should
2717 * suppress illegal length indication if we are
2718 * running in variable block mode so that we don't
2719 * have to request sense every time our requested
2720 * block size is larger than the written block.
2721 * The residual information from the ccb allows
2722 * us to identify this situation anyway. The only
2723 * problem with this is that we will not get
2724 * information about blocks that are larger than
2725 * our read buffer unless we set the block size
2726 * in the mode page to something other than 0.
2727 *
2728 * I believe that this is a non-issue. If user apps
2729 * don't adjust their read size to match our record
2730 * size, that's just life. Anyway, the typical usage
2731 * would be to issue, e.g., 64KB reads and occasionally
2732 * have to do deal with 512 byte or 1KB intermediate
2733 * records.
2734 *
2735 * That said, though, we now support setting the
2736 * SILI bit on reads, and we set the blocksize to 4
2737 * bytes when we do that. This gives us
2738 * compatibility with software that wants this,
2739 * although the only real difference between that
2740 * and not setting the SILI bit on reads is that we
2741 * won't get a check condition on reads where our
2742 * request size is larger than the block on tape.
2743 * That probably only makes a real difference in
2744 * non-packetized SCSI, where you have to go back
2745 * to the drive to request sense and thus incur
2746 * more latency.
2747 */
2748 softc->dsreg = (bp->bio_cmd == BIO_READ)?
2749 MTIO_DSREG_RD : MTIO_DSREG_WR;
2750 scsi_sa_read_write(&start_ccb->csio, 0, sadone,
2751 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ?
2752 SCSI_RW_READ : SCSI_RW_WRITE) |
2753 ((bp->bio_flags & BIO_UNMAPPED) != 0 ?
2754 SCSI_RW_BIO : 0), softc->sili,
2755 (softc->flags & SA_FLAG_FIXED) != 0, length,
2756 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp :
2757 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE,
2758 IO_TIMEOUT);
2759 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED;
2760 start_ccb->ccb_h.ccb_bp = bp;
2761 bp = bioq_first(&softc->bio_queue);
2762 xpt_action(start_ccb);
2763 }
2764
2765 if (bp != NULL) {
2766 /* Have more work to do, so ensure we stay scheduled */
2767 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
2768 }
2769 break;
2770 }
2771 case SA_STATE_ABNORMAL:
2772 default:
2773 panic("state 0x%x in sastart", softc->state);
2774 break;
2775 }
2776 }
2777
2778
2779 static void
sadone(struct cam_periph * periph,union ccb * done_ccb)2780 sadone(struct cam_periph *periph, union ccb *done_ccb)
2781 {
2782 struct sa_softc *softc;
2783 struct ccb_scsiio *csio;
2784 struct bio *bp;
2785 int error;
2786
2787 softc = (struct sa_softc *)periph->softc;
2788 csio = &done_ccb->csio;
2789
2790 softc->dsreg = MTIO_DSREG_REST;
2791 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
2792 error = 0;
2793 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2794 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) {
2795 /*
2796 * A retry was scheduled, so just return.
2797 */
2798 return;
2799 }
2800 }
2801
2802 if (error == EIO) {
2803
2804 /*
2805 * Catastrophic error. Mark the tape as frozen
2806 * (we no longer know tape position).
2807 *
2808 * Return all queued I/O with EIO, and unfreeze
2809 * our queue so that future transactions that
2810 * attempt to fix this problem can get to the
2811 * device.
2812 *
2813 */
2814
2815 softc->flags |= SA_FLAG_TAPE_FROZEN;
2816 bioq_flush(&softc->bio_queue, NULL, EIO);
2817 }
2818 if (error != 0) {
2819 bp->bio_resid = bp->bio_bcount;
2820 bp->bio_error = error;
2821 bp->bio_flags |= BIO_ERROR;
2822 /*
2823 * In the error case, position is updated in saerror.
2824 */
2825 } else {
2826 bp->bio_resid = csio->resid;
2827 bp->bio_error = 0;
2828 if (csio->resid != 0) {
2829 bp->bio_flags |= BIO_ERROR;
2830 }
2831 if (bp->bio_cmd == BIO_WRITE) {
2832 softc->flags |= SA_FLAG_TAPE_WRITTEN;
2833 softc->filemarks = 0;
2834 }
2835 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) &&
2836 (softc->blkno != (daddr_t) -1)) {
2837 if ((softc->flags & SA_FLAG_FIXED) != 0) {
2838 u_int32_t l;
2839 if (softc->blk_shift != 0) {
2840 l = bp->bio_bcount >>
2841 softc->blk_shift;
2842 } else {
2843 l = bp->bio_bcount /
2844 softc->media_blksize;
2845 }
2846 softc->blkno += (daddr_t) l;
2847 } else {
2848 softc->blkno++;
2849 }
2850 }
2851 }
2852 /*
2853 * If we had an error (immediate or pending),
2854 * release the device queue now.
2855 */
2856 if (error || (softc->flags & SA_FLAG_ERR_PENDING))
2857 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0);
2858 if (error || bp->bio_resid) {
2859 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
2860 ("error %d resid %ld count %ld\n", error,
2861 bp->bio_resid, bp->bio_bcount));
2862 }
2863 biofinish(bp, softc->device_stats, 0);
2864 xpt_release_ccb(done_ccb);
2865 }
2866
2867 /*
2868 * Mount the tape (make sure it's ready for I/O).
2869 */
2870 static int
samount(struct cam_periph * periph,int oflags,struct cdev * dev)2871 samount(struct cam_periph *periph, int oflags, struct cdev *dev)
2872 {
2873 struct sa_softc *softc;
2874 union ccb *ccb;
2875 int error;
2876
2877 /*
2878 * oflags can be checked for 'kind' of open (read-only check) - later
2879 * dev can be checked for a control-mode or compression open - later
2880 */
2881 UNUSED_PARAMETER(oflags);
2882 UNUSED_PARAMETER(dev);
2883
2884
2885 softc = (struct sa_softc *)periph->softc;
2886
2887 /*
2888 * This should determine if something has happened since the last
2889 * open/mount that would invalidate the mount. We do *not* want
2890 * to retry this command- we just want the status. But we only
2891 * do this if we're mounted already- if we're not mounted,
2892 * we don't care about the unit read state and can instead use
2893 * this opportunity to attempt to reserve the tape unit.
2894 */
2895
2896 if (softc->flags & SA_FLAG_TAPE_MOUNTED) {
2897 ccb = cam_periph_getccb(periph, 1);
2898 scsi_test_unit_ready(&ccb->csio, 0, NULL,
2899 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
2900 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2901 softc->device_stats);
2902 if (error == ENXIO) {
2903 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
2904 scsi_test_unit_ready(&ccb->csio, 0, NULL,
2905 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
2906 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2907 softc->device_stats);
2908 } else if (error) {
2909 /*
2910 * We don't need to freeze the tape because we
2911 * will now attempt to rewind/load it.
2912 */
2913 softc->flags &= ~SA_FLAG_TAPE_MOUNTED;
2914 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
2915 xpt_print(periph->path,
2916 "error %d on TUR in samount\n", error);
2917 }
2918 }
2919 } else {
2920 error = sareservereleaseunit(periph, TRUE);
2921 if (error) {
2922 return (error);
2923 }
2924 ccb = cam_periph_getccb(periph, 1);
2925 scsi_test_unit_ready(&ccb->csio, 0, NULL,
2926 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT);
2927 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2928 softc->device_stats);
2929 }
2930
2931 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) {
2932 struct scsi_read_block_limits_data *rblim = NULL;
2933 int comp_enabled, comp_supported;
2934 u_int8_t write_protect, guessing = 0;
2935
2936 /*
2937 * Clear out old state.
2938 */
2939 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN|
2940 SA_FLAG_ERR_PENDING|SA_FLAG_COMPRESSION);
2941 softc->filemarks = 0;
2942
2943 /*
2944 * *Very* first off, make sure we're loaded to BOT.
2945 */
2946 scsi_load_unload(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE,
2947 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT);
2948 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2949 softc->device_stats);
2950
2951 /*
2952 * In case this doesn't work, do a REWIND instead
2953 */
2954 if (error) {
2955 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG,
2956 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
2957 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2958 softc->device_stats);
2959 }
2960 if (error) {
2961 xpt_release_ccb(ccb);
2962 goto exit;
2963 }
2964
2965 /*
2966 * Do a dummy test read to force access to the
2967 * media so that the drive will really know what's
2968 * there. We actually don't really care what the
2969 * blocksize on tape is and don't expect to really
2970 * read a full record.
2971 */
2972 rblim = (struct scsi_read_block_limits_data *)
2973 malloc(8192, M_SCSISA, M_NOWAIT);
2974 if (rblim == NULL) {
2975 xpt_print(periph->path, "no memory for test read\n");
2976 xpt_release_ccb(ccb);
2977 error = ENOMEM;
2978 goto exit;
2979 }
2980
2981 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) {
2982 scsi_sa_read_write(&ccb->csio, 0, NULL,
2983 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192,
2984 (void *) rblim, 8192, SSD_FULL_SIZE,
2985 IO_TIMEOUT);
2986 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
2987 softc->device_stats);
2988 scsi_rewind(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG,
2989 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT);
2990 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
2991 SF_NO_PRINT | SF_RETRY_UA,
2992 softc->device_stats);
2993 if (error) {
2994 xpt_print(periph->path,
2995 "unable to rewind after test read\n");
2996 xpt_release_ccb(ccb);
2997 goto exit;
2998 }
2999 }
3000
3001 /*
3002 * Next off, determine block limits.
3003 */
3004 scsi_read_block_limits(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG,
3005 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3006
3007 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO,
3008 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats);
3009
3010 xpt_release_ccb(ccb);
3011
3012 if (error != 0) {
3013 /*
3014 * If it's less than SCSI-2, READ BLOCK LIMITS is not
3015 * a MANDATORY command. Anyway- it doesn't matter-
3016 * we can proceed anyway.
3017 */
3018 softc->blk_gran = 0;
3019 softc->max_blk = ~0;
3020 softc->min_blk = 0;
3021 } else {
3022 if (softc->scsi_rev >= SCSI_REV_SPC) {
3023 softc->blk_gran = RBL_GRAN(rblim);
3024 } else {
3025 softc->blk_gran = 0;
3026 }
3027 /*
3028 * We take max_blk == min_blk to mean a default to
3029 * fixed mode- but note that whatever we get out of
3030 * sagetparams below will actually determine whether
3031 * we are actually *in* fixed mode.
3032 */
3033 softc->max_blk = scsi_3btoul(rblim->maximum);
3034 softc->min_blk = scsi_2btoul(rblim->minimum);
3035
3036
3037 }
3038 /*
3039 * Next, perform a mode sense to determine
3040 * current density, blocksize, compression etc.
3041 */
3042 error = sagetparams(periph, SA_PARAM_ALL,
3043 &softc->media_blksize,
3044 &softc->media_density,
3045 &softc->media_numblks,
3046 &softc->buffer_mode, &write_protect,
3047 &softc->speed, &comp_supported,
3048 &comp_enabled, &softc->comp_algorithm,
3049 NULL, NULL, 0, 0);
3050
3051 if (error != 0) {
3052 /*
3053 * We could work a little harder here. We could
3054 * adjust our attempts to get information. It
3055 * might be an ancient tape drive. If someone
3056 * nudges us, we'll do that.
3057 */
3058 goto exit;
3059 }
3060
3061 /*
3062 * If no quirk has determined that this is a device that is
3063 * preferred to be in fixed or variable mode, now is the time
3064 * to find out.
3065 */
3066 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) {
3067 guessing = 1;
3068 /*
3069 * This could be expensive to find out. Luckily we
3070 * only need to do this once. If we start out in
3071 * 'default' mode, try and set ourselves to one
3072 * of the densities that would determine a wad
3073 * of other stuff. Go from highest to lowest.
3074 */
3075 if (softc->media_density == SCSI_DEFAULT_DENSITY) {
3076 int i;
3077 static u_int8_t ctry[] = {
3078 SCSI_DENSITY_HALFINCH_PE,
3079 SCSI_DENSITY_HALFINCH_6250C,
3080 SCSI_DENSITY_HALFINCH_6250,
3081 SCSI_DENSITY_HALFINCH_1600,
3082 SCSI_DENSITY_HALFINCH_800,
3083 SCSI_DENSITY_QIC_4GB,
3084 SCSI_DENSITY_QIC_2GB,
3085 SCSI_DENSITY_QIC_525_320,
3086 SCSI_DENSITY_QIC_150,
3087 SCSI_DENSITY_QIC_120,
3088 SCSI_DENSITY_QIC_24,
3089 SCSI_DENSITY_QIC_11_9TRK,
3090 SCSI_DENSITY_QIC_11_4TRK,
3091 SCSI_DENSITY_QIC_1320,
3092 SCSI_DENSITY_QIC_3080,
3093 0
3094 };
3095 for (i = 0; ctry[i]; i++) {
3096 error = sasetparams(periph,
3097 SA_PARAM_DENSITY, 0, ctry[i],
3098 0, SF_NO_PRINT);
3099 if (error == 0) {
3100 softc->media_density = ctry[i];
3101 break;
3102 }
3103 }
3104 }
3105 switch (softc->media_density) {
3106 case SCSI_DENSITY_QIC_11_4TRK:
3107 case SCSI_DENSITY_QIC_11_9TRK:
3108 case SCSI_DENSITY_QIC_24:
3109 case SCSI_DENSITY_QIC_120:
3110 case SCSI_DENSITY_QIC_150:
3111 case SCSI_DENSITY_QIC_525_320:
3112 case SCSI_DENSITY_QIC_1320:
3113 case SCSI_DENSITY_QIC_3080:
3114 softc->quirks &= ~SA_QUIRK_2FM;
3115 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
3116 softc->last_media_blksize = 512;
3117 break;
3118 case SCSI_DENSITY_QIC_4GB:
3119 case SCSI_DENSITY_QIC_2GB:
3120 softc->quirks &= ~SA_QUIRK_2FM;
3121 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM;
3122 softc->last_media_blksize = 1024;
3123 break;
3124 default:
3125 softc->last_media_blksize =
3126 softc->media_blksize;
3127 softc->quirks |= SA_QUIRK_VARIABLE;
3128 break;
3129 }
3130 }
3131
3132 /*
3133 * If no quirk has determined that this is a device that needs
3134 * to have 2 Filemarks at EOD, now is the time to find out.
3135 */
3136
3137 if ((softc->quirks & SA_QUIRK_2FM) == 0) {
3138 switch (softc->media_density) {
3139 case SCSI_DENSITY_HALFINCH_800:
3140 case SCSI_DENSITY_HALFINCH_1600:
3141 case SCSI_DENSITY_HALFINCH_6250:
3142 case SCSI_DENSITY_HALFINCH_6250C:
3143 case SCSI_DENSITY_HALFINCH_PE:
3144 softc->quirks &= ~SA_QUIRK_1FM;
3145 softc->quirks |= SA_QUIRK_2FM;
3146 break;
3147 default:
3148 break;
3149 }
3150 }
3151
3152 /*
3153 * Now validate that some info we got makes sense.
3154 */
3155 if ((softc->max_blk < softc->media_blksize) ||
3156 (softc->min_blk > softc->media_blksize &&
3157 softc->media_blksize)) {
3158 xpt_print(periph->path,
3159 "BLOCK LIMITS (%d..%d) could not match current "
3160 "block settings (%d)- adjusting\n", softc->min_blk,
3161 softc->max_blk, softc->media_blksize);
3162 softc->max_blk = softc->min_blk =
3163 softc->media_blksize;
3164 }
3165
3166 /*
3167 * Now put ourselves into the right frame of mind based
3168 * upon quirks...
3169 */
3170 tryagain:
3171 /*
3172 * If we want to be in FIXED mode and our current blocksize
3173 * is not equal to our last blocksize (if nonzero), try and
3174 * set ourselves to this last blocksize (as the 'preferred'
3175 * block size). The initial quirkmatch at registry sets the
3176 * initial 'last' blocksize. If, for whatever reason, this
3177 * 'last' blocksize is zero, set the blocksize to 512,
3178 * or min_blk if that's larger.
3179 */
3180 if ((softc->quirks & SA_QUIRK_FIXED) &&
3181 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 &&
3182 (softc->media_blksize != softc->last_media_blksize)) {
3183 softc->media_blksize = softc->last_media_blksize;
3184 if (softc->media_blksize == 0) {
3185 softc->media_blksize = 512;
3186 if (softc->media_blksize < softc->min_blk) {
3187 softc->media_blksize = softc->min_blk;
3188 }
3189 }
3190 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
3191 softc->media_blksize, 0, 0, SF_NO_PRINT);
3192 if (error) {
3193 xpt_print(periph->path,
3194 "unable to set fixed blocksize to %d\n",
3195 softc->media_blksize);
3196 goto exit;
3197 }
3198 }
3199
3200 if ((softc->quirks & SA_QUIRK_VARIABLE) &&
3201 (softc->media_blksize != 0)) {
3202 softc->last_media_blksize = softc->media_blksize;
3203 softc->media_blksize = 0;
3204 error = sasetparams(periph, SA_PARAM_BLOCKSIZE,
3205 0, 0, 0, SF_NO_PRINT);
3206 if (error) {
3207 /*
3208 * If this fails and we were guessing, just
3209 * assume that we got it wrong and go try
3210 * fixed block mode. Don't even check against
3211 * density code at this point.
3212 */
3213 if (guessing) {
3214 softc->quirks &= ~SA_QUIRK_VARIABLE;
3215 softc->quirks |= SA_QUIRK_FIXED;
3216 if (softc->last_media_blksize == 0)
3217 softc->last_media_blksize = 512;
3218 goto tryagain;
3219 }
3220 xpt_print(periph->path,
3221 "unable to set variable blocksize\n");
3222 goto exit;
3223 }
3224 }
3225
3226 /*
3227 * Now that we have the current block size,
3228 * set up some parameters for sastart's usage.
3229 */
3230 if (softc->media_blksize) {
3231 softc->flags |= SA_FLAG_FIXED;
3232 if (powerof2(softc->media_blksize)) {
3233 softc->blk_shift =
3234 ffs(softc->media_blksize) - 1;
3235 softc->blk_mask = softc->media_blksize - 1;
3236 } else {
3237 softc->blk_mask = ~0;
3238 softc->blk_shift = 0;
3239 }
3240 } else {
3241 /*
3242 * The SCSI-3 spec allows 0 to mean "unspecified".
3243 * The SCSI-1 spec allows 0 to mean 'infinite'.
3244 *
3245 * Either works here.
3246 */
3247 if (softc->max_blk == 0) {
3248 softc->max_blk = ~0;
3249 }
3250 softc->blk_shift = 0;
3251 if (softc->blk_gran != 0) {
3252 softc->blk_mask = softc->blk_gran - 1;
3253 } else {
3254 softc->blk_mask = 0;
3255 }
3256 }
3257
3258 if (write_protect)
3259 softc->flags |= SA_FLAG_TAPE_WP;
3260
3261 if (comp_supported) {
3262 if (softc->saved_comp_algorithm == 0)
3263 softc->saved_comp_algorithm =
3264 softc->comp_algorithm;
3265 softc->flags |= SA_FLAG_COMP_SUPP;
3266 if (comp_enabled)
3267 softc->flags |= SA_FLAG_COMP_ENABLED;
3268 } else
3269 softc->flags |= SA_FLAG_COMP_UNSUPP;
3270
3271 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) &&
3272 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) {
3273 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0,
3274 0, 0, SF_NO_PRINT);
3275 if (error == 0) {
3276 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF;
3277 } else {
3278 xpt_print(periph->path,
3279 "unable to set buffered mode\n");
3280 }
3281 error = 0; /* not an error */
3282 }
3283
3284
3285 if (error == 0) {
3286 softc->flags |= SA_FLAG_TAPE_MOUNTED;
3287 }
3288 exit:
3289 if (rblim != NULL)
3290 free(rblim, M_SCSISA);
3291
3292 if (error != 0) {
3293 softc->dsreg = MTIO_DSREG_NIL;
3294 } else {
3295 softc->fileno = softc->blkno = 0;
3296 softc->rep_fileno = softc->rep_blkno = -1;
3297 softc->partition = 0;
3298 softc->dsreg = MTIO_DSREG_REST;
3299 }
3300 #ifdef SA_1FM_AT_EOD
3301 if ((softc->quirks & SA_QUIRK_2FM) == 0)
3302 softc->quirks |= SA_QUIRK_1FM;
3303 #else
3304 if ((softc->quirks & SA_QUIRK_1FM) == 0)
3305 softc->quirks |= SA_QUIRK_2FM;
3306 #endif
3307 } else
3308 xpt_release_ccb(ccb);
3309
3310 /*
3311 * If we return an error, we're not mounted any more,
3312 * so release any device reservation.
3313 */
3314 if (error != 0) {
3315 (void) sareservereleaseunit(periph, FALSE);
3316 } else {
3317 /*
3318 * Clear I/O residual.
3319 */
3320 softc->last_io_resid = 0;
3321 softc->last_ctl_resid = 0;
3322 }
3323 return (error);
3324 }
3325
3326 /*
3327 * How many filemarks do we need to write if we were to terminate the
3328 * tape session right now? Note that this can be a negative number
3329 */
3330
3331 static int
samarkswanted(struct cam_periph * periph)3332 samarkswanted(struct cam_periph *periph)
3333 {
3334 int markswanted;
3335 struct sa_softc *softc;
3336
3337 softc = (struct sa_softc *)periph->softc;
3338 markswanted = 0;
3339 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) {
3340 markswanted++;
3341 if (softc->quirks & SA_QUIRK_2FM)
3342 markswanted++;
3343 }
3344 markswanted -= softc->filemarks;
3345 return (markswanted);
3346 }
3347
3348 static int
sacheckeod(struct cam_periph * periph)3349 sacheckeod(struct cam_periph *periph)
3350 {
3351 int error;
3352 int markswanted;
3353
3354 markswanted = samarkswanted(periph);
3355
3356 if (markswanted > 0) {
3357 error = sawritefilemarks(periph, markswanted, FALSE, FALSE);
3358 } else {
3359 error = 0;
3360 }
3361 return (error);
3362 }
3363
3364 static int
saerror(union ccb * ccb,u_int32_t cflgs,u_int32_t sflgs)3365 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs)
3366 {
3367 static const char *toobig =
3368 "%d-byte tape record bigger than supplied buffer\n";
3369 struct cam_periph *periph;
3370 struct sa_softc *softc;
3371 struct ccb_scsiio *csio;
3372 struct scsi_sense_data *sense;
3373 uint64_t resid = 0;
3374 int64_t info = 0;
3375 cam_status status;
3376 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid;
3377 int sense_len;
3378 uint8_t stream_bits;
3379
3380 periph = xpt_path_periph(ccb->ccb_h.path);
3381 softc = (struct sa_softc *)periph->softc;
3382 csio = &ccb->csio;
3383 sense = &csio->sense_data;
3384 sense_len = csio->sense_len - csio->sense_resid;
3385 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key,
3386 &asc, &ascq, /*show_errors*/ 1);
3387 if (asc != -1 && ascq != -1)
3388 aqvalid = 1;
3389 else
3390 aqvalid = 0;
3391 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0)
3392 stream_valid = 1;
3393 else
3394 stream_valid = 0;
3395 error = 0;
3396
3397 status = csio->ccb_h.status & CAM_STATUS_MASK;
3398
3399 /*
3400 * Calculate/latch up, any residuals... We do this in a funny 2-step
3401 * so we can print stuff here if we have CAM_DEBUG enabled for this
3402 * unit.
3403 */
3404 if (status == CAM_SCSI_STATUS_ERROR) {
3405 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid,
3406 &info) == 0) {
3407 if ((softc->flags & SA_FLAG_FIXED) != 0)
3408 resid *= softc->media_blksize;
3409 } else {
3410 resid = csio->dxfer_len;
3411 info = resid;
3412 if ((softc->flags & SA_FLAG_FIXED) != 0) {
3413 if (softc->media_blksize)
3414 info /= softc->media_blksize;
3415 }
3416 }
3417 if (csio->cdb_io.cdb_bytes[0] == SA_READ ||
3418 csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
3419 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense,
3420 sizeof (struct scsi_sense_data));
3421 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb,
3422 (int) csio->cdb_len);
3423 softc->last_io_resid = resid;
3424 softc->last_resid_was_io = 1;
3425 } else {
3426 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense,
3427 sizeof (struct scsi_sense_data));
3428 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb,
3429 (int) csio->cdb_len);
3430 softc->last_ctl_resid = resid;
3431 softc->last_resid_was_io = 0;
3432 }
3433 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x "
3434 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd "
3435 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff,
3436 sense_key, asc, ascq, status,
3437 (stream_valid) ? stream_bits : 0, (intmax_t)resid,
3438 csio->dxfer_len));
3439 } else {
3440 CAM_DEBUG(periph->path, CAM_DEBUG_INFO,
3441 ("Cam Status 0x%x\n", status));
3442 }
3443
3444 switch (status) {
3445 case CAM_REQ_CMP:
3446 return (0);
3447 case CAM_SCSI_STATUS_ERROR:
3448 /*
3449 * If a read/write command, we handle it here.
3450 */
3451 if (csio->cdb_io.cdb_bytes[0] == SA_READ ||
3452 csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
3453 break;
3454 }
3455 /*
3456 * If this was just EOM/EOP, Filemark, Setmark, ILI or
3457 * PEW detected on a non read/write command, we assume
3458 * it's not an error and propagate the residual and return.
3459 */
3460 if ((aqvalid && asc == 0 && ((ascq > 0 && ascq <= 5)
3461 || (ascq == 0x07)))
3462 || (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) {
3463 csio->resid = resid;
3464 QFRLS(ccb);
3465 return (0);
3466 }
3467 /*
3468 * Otherwise, we let the common code handle this.
3469 */
3470 return (cam_periph_error(ccb, cflgs, sflgs));
3471
3472 /*
3473 * XXX: To Be Fixed
3474 * We cannot depend upon CAM honoring retry counts for these.
3475 */
3476 case CAM_SCSI_BUS_RESET:
3477 case CAM_BDR_SENT:
3478 if (ccb->ccb_h.retry_count <= 0) {
3479 return (EIO);
3480 }
3481 /* FALLTHROUGH */
3482 default:
3483 return (cam_periph_error(ccb, cflgs, sflgs));
3484 }
3485
3486 /*
3487 * Handle filemark, end of tape, mismatched record sizes....
3488 * From this point out, we're only handling read/write cases.
3489 * Handle writes && reads differently.
3490 */
3491
3492 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) {
3493 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) {
3494 csio->resid = resid;
3495 error = ENOSPC;
3496 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) {
3497 softc->flags |= SA_FLAG_EOM_PENDING;
3498 /*
3499 * Grotesque as it seems, the few times
3500 * I've actually seen a non-zero resid,
3501 * the tape drive actually lied and had
3502 * written all the data!.
3503 */
3504 csio->resid = 0;
3505 }
3506 } else {
3507 csio->resid = resid;
3508 if (sense_key == SSD_KEY_BLANK_CHECK) {
3509 if (softc->quirks & SA_QUIRK_1FM) {
3510 error = 0;
3511 softc->flags |= SA_FLAG_EOM_PENDING;
3512 } else {
3513 error = EIO;
3514 }
3515 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){
3516 if (softc->flags & SA_FLAG_FIXED) {
3517 error = -1;
3518 softc->flags |= SA_FLAG_EOF_PENDING;
3519 }
3520 /*
3521 * Unconditionally, if we detected a filemark on a read,
3522 * mark that we've run moved a file ahead.
3523 */
3524 if (softc->fileno != (daddr_t) -1) {
3525 softc->fileno++;
3526 softc->blkno = 0;
3527 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED;
3528 }
3529 }
3530 }
3531
3532 /*
3533 * Incorrect Length usually applies to read, but can apply to writes.
3534 */
3535 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) {
3536 if (info < 0) {
3537 xpt_print(csio->ccb_h.path, toobig,
3538 csio->dxfer_len - info);
3539 csio->resid = csio->dxfer_len;
3540 error = EIO;
3541 } else {
3542 csio->resid = resid;
3543 if (softc->flags & SA_FLAG_FIXED) {
3544 softc->flags |= SA_FLAG_EIO_PENDING;
3545 }
3546 /*
3547 * Bump the block number if we hadn't seen a filemark.
3548 * Do this independent of errors (we've moved anyway).
3549 */
3550 if ((stream_valid == 0) ||
3551 (stream_bits & SSD_FILEMARK) == 0) {
3552 if (softc->blkno != (daddr_t) -1) {
3553 softc->blkno++;
3554 csio->ccb_h.ccb_pflags |=
3555 SA_POSITION_UPDATED;
3556 }
3557 }
3558 }
3559 }
3560
3561 if (error <= 0) {
3562 /*
3563 * Unfreeze the queue if frozen as we're not returning anything
3564 * to our waiters that would indicate an I/O error has occurred
3565 * (yet).
3566 */
3567 QFRLS(ccb);
3568 error = 0;
3569 }
3570 return (error);
3571 }
3572
3573 static int
sagetparams(struct cam_periph * periph,sa_params params_to_get,u_int32_t * blocksize,u_int8_t * density,u_int32_t * numblocks,int * buff_mode,u_int8_t * write_protect,u_int8_t * speed,int * comp_supported,int * comp_enabled,u_int32_t * comp_algorithm,sa_comp_t * tcs,struct scsi_control_data_prot_subpage * prot_page,int dp_size,int prot_changeable)3574 sagetparams(struct cam_periph *periph, sa_params params_to_get,
3575 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks,
3576 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed,
3577 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm,
3578 sa_comp_t *tcs, struct scsi_control_data_prot_subpage *prot_page,
3579 int dp_size, int prot_changeable)
3580 {
3581 union ccb *ccb;
3582 void *mode_buffer;
3583 struct scsi_mode_header_6 *mode_hdr;
3584 struct scsi_mode_blk_desc *mode_blk;
3585 int mode_buffer_len;
3586 struct sa_softc *softc;
3587 u_int8_t cpage;
3588 int error;
3589 cam_status status;
3590
3591 softc = (struct sa_softc *)periph->softc;
3592 ccb = cam_periph_getccb(periph, 1);
3593 if (softc->quirks & SA_QUIRK_NO_CPAGE)
3594 cpage = SA_DEVICE_CONFIGURATION_PAGE;
3595 else
3596 cpage = SA_DATA_COMPRESSION_PAGE;
3597
3598 retry:
3599 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
3600
3601 if (params_to_get & SA_PARAM_COMPRESSION) {
3602 if (softc->quirks & SA_QUIRK_NOCOMP) {
3603 *comp_supported = FALSE;
3604 params_to_get &= ~SA_PARAM_COMPRESSION;
3605 } else
3606 mode_buffer_len += sizeof (sa_comp_t);
3607 }
3608
3609 /* XXX Fix M_NOWAIT */
3610 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO);
3611 if (mode_buffer == NULL) {
3612 xpt_release_ccb(ccb);
3613 return (ENOMEM);
3614 }
3615 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
3616 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
3617
3618 /* it is safe to retry this */
3619 scsi_mode_sense(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE,
3620 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ?
3621 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len,
3622 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
3623
3624 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
3625 softc->device_stats);
3626
3627 status = ccb->ccb_h.status & CAM_STATUS_MASK;
3628
3629 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) {
3630 /*
3631 * Hmm. Let's see if we can try another page...
3632 * If we've already done that, give up on compression
3633 * for this device and remember this for the future
3634 * and attempt the request without asking for compression
3635 * info.
3636 */
3637 if (cpage == SA_DATA_COMPRESSION_PAGE) {
3638 cpage = SA_DEVICE_CONFIGURATION_PAGE;
3639 goto retry;
3640 }
3641 softc->quirks |= SA_QUIRK_NOCOMP;
3642 free(mode_buffer, M_SCSISA);
3643 goto retry;
3644 } else if (status == CAM_SCSI_STATUS_ERROR) {
3645 /* Tell the user about the fatal error. */
3646 scsi_sense_print(&ccb->csio);
3647 goto sagetparamsexit;
3648 }
3649
3650 /*
3651 * If the user only wants the compression information, and
3652 * the device doesn't send back the block descriptor, it's
3653 * no big deal. If the user wants more than just
3654 * compression, though, and the device doesn't pass back the
3655 * block descriptor, we need to send another mode sense to
3656 * get the block descriptor.
3657 */
3658 if ((mode_hdr->blk_desc_len == 0) &&
3659 (params_to_get & SA_PARAM_COMPRESSION) &&
3660 (params_to_get & ~(SA_PARAM_COMPRESSION))) {
3661
3662 /*
3663 * Decrease the mode buffer length by the size of
3664 * the compression page, to make sure the data
3665 * there doesn't get overwritten.
3666 */
3667 mode_buffer_len -= sizeof (sa_comp_t);
3668
3669 /*
3670 * Now move the compression page that we presumably
3671 * got back down the memory chunk a little bit so
3672 * it doesn't get spammed.
3673 */
3674 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t));
3675 bzero(&mode_hdr[0], sizeof (mode_hdr[0]));
3676
3677 /*
3678 * Now, we issue another mode sense and just ask
3679 * for the block descriptor, etc.
3680 */
3681
3682 scsi_mode_sense(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE,
3683 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE,
3684 mode_buffer, mode_buffer_len, SSD_FULL_SIZE,
3685 SCSIOP_TIMEOUT);
3686
3687 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
3688 softc->device_stats);
3689
3690 if (error != 0)
3691 goto sagetparamsexit;
3692 }
3693
3694 if (params_to_get & SA_PARAM_BLOCKSIZE)
3695 *blocksize = scsi_3btoul(mode_blk->blklen);
3696
3697 if (params_to_get & SA_PARAM_NUMBLOCKS)
3698 *numblocks = scsi_3btoul(mode_blk->nblocks);
3699
3700 if (params_to_get & SA_PARAM_BUFF_MODE)
3701 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK;
3702
3703 if (params_to_get & SA_PARAM_DENSITY)
3704 *density = mode_blk->density;
3705
3706 if (params_to_get & SA_PARAM_WP)
3707 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE;
3708
3709 if (params_to_get & SA_PARAM_SPEED)
3710 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK;
3711
3712 if (params_to_get & SA_PARAM_COMPRESSION) {
3713 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1];
3714 if (cpage == SA_DATA_COMPRESSION_PAGE) {
3715 struct scsi_data_compression_page *cp = &ntcs->dcomp;
3716 *comp_supported =
3717 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE;
3718 *comp_enabled =
3719 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE;
3720 *comp_algorithm = scsi_4btoul(cp->comp_algorithm);
3721 } else {
3722 struct scsi_dev_conf_page *cp = &ntcs->dconf;
3723 /*
3724 * We don't really know whether this device supports
3725 * Data Compression if the algorithm field is
3726 * zero. Just say we do.
3727 */
3728 *comp_supported = TRUE;
3729 *comp_enabled =
3730 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE;
3731 *comp_algorithm = cp->sel_comp_alg;
3732 }
3733 if (tcs != NULL)
3734 bcopy(ntcs, tcs, sizeof (sa_comp_t));
3735 }
3736
3737 if ((params_to_get & SA_PARAM_DENSITY_EXT)
3738 && (softc->scsi_rev >= SCSI_REV_SPC)) {
3739 int i;
3740
3741 for (i = 0; i < SA_DENSITY_TYPES; i++) {
3742 scsi_report_density_support(&ccb->csio,
3743 /*retries*/ 1,
3744 /*cbfcnp*/ NULL,
3745 /*tag_action*/ MSG_SIMPLE_Q_TAG,
3746 /*media*/ softc->density_type_bits[i] & SRDS_MEDIA,
3747 /*medium_type*/ softc->density_type_bits[i] &
3748 SRDS_MEDIUM_TYPE,
3749 /*data_ptr*/ softc->density_info[i],
3750 /*length*/ sizeof(softc->density_info[i]),
3751 /*sense_len*/ SSD_FULL_SIZE,
3752 /*timeout*/ REP_DENSITY_TIMEOUT);
3753 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
3754 softc->device_stats);
3755 status = ccb->ccb_h.status & CAM_STATUS_MASK;
3756
3757 /*
3758 * Some tape drives won't support this command at
3759 * all, but hopefully we'll minimize that with the
3760 * check for SPC or greater support above. If they
3761 * don't support the default report (neither the
3762 * MEDIA or MEDIUM_TYPE bits set), then there is
3763 * really no point in continuing on to look for
3764 * other reports.
3765 */
3766 if ((error != 0)
3767 || (status != CAM_REQ_CMP)) {
3768 error = 0;
3769 softc->density_info_valid[i] = 0;
3770 if (softc->density_type_bits[i] == 0)
3771 break;
3772 else
3773 continue;
3774 }
3775 softc->density_info_valid[i] = ccb->csio.dxfer_len -
3776 ccb->csio.resid;
3777 }
3778 }
3779
3780 /*
3781 * Get logical block protection parameters if the drive supports it.
3782 */
3783 if ((params_to_get & SA_PARAM_LBP)
3784 && (softc->flags & SA_FLAG_PROTECT_SUPP)) {
3785 struct scsi_mode_header_10 *mode10_hdr;
3786 struct scsi_control_data_prot_subpage *dp_page;
3787 struct scsi_mode_sense_10 *cdb;
3788 struct sa_prot_state *prot;
3789 int dp_len, returned_len;
3790
3791 if (dp_size == 0)
3792 dp_size = sizeof(*dp_page);
3793
3794 dp_len = sizeof(*mode10_hdr) + dp_size;
3795 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO);
3796 if (mode10_hdr == NULL) {
3797 error = ENOMEM;
3798 goto sagetparamsexit;
3799 }
3800
3801 scsi_mode_sense_len(&ccb->csio,
3802 /*retries*/ 5,
3803 /*cbfcnp*/ NULL,
3804 /*tag_action*/ MSG_SIMPLE_Q_TAG,
3805 /*dbd*/ TRUE,
3806 /*page_code*/ (prot_changeable == 0) ?
3807 SMS_PAGE_CTRL_CURRENT :
3808 SMS_PAGE_CTRL_CHANGEABLE,
3809 /*page*/ SMS_CONTROL_MODE_PAGE,
3810 /*param_buf*/ (uint8_t *)mode10_hdr,
3811 /*param_len*/ dp_len,
3812 /*minimum_cmd_size*/ 10,
3813 /*sense_len*/ SSD_FULL_SIZE,
3814 /*timeout*/ SCSIOP_TIMEOUT);
3815 /*
3816 * XXX KDM we need to be able to set the subpage in the
3817 * fill function.
3818 */
3819 cdb = (struct scsi_mode_sense_10 *)ccb->csio.cdb_io.cdb_bytes;
3820 cdb->subpage = SA_CTRL_DP_SUBPAGE_CODE;
3821
3822 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT,
3823 softc->device_stats);
3824 if (error != 0) {
3825 free(mode10_hdr, M_SCSISA);
3826 goto sagetparamsexit;
3827 }
3828
3829 status = ccb->ccb_h.status & CAM_STATUS_MASK;
3830 if (status != CAM_REQ_CMP) {
3831 error = EINVAL;
3832 free(mode10_hdr, M_SCSISA);
3833 goto sagetparamsexit;
3834 }
3835
3836 /*
3837 * The returned data length at least has to be long enough
3838 * for us to look at length in the mode page header.
3839 */
3840 returned_len = ccb->csio.dxfer_len - ccb->csio.resid;
3841 if (returned_len < sizeof(mode10_hdr->data_length)) {
3842 error = EINVAL;
3843 free(mode10_hdr, M_SCSISA);
3844 goto sagetparamsexit;
3845 }
3846
3847 returned_len = min(returned_len,
3848 sizeof(mode10_hdr->data_length) +
3849 scsi_2btoul(mode10_hdr->data_length));
3850
3851 dp_page = (struct scsi_control_data_prot_subpage *)
3852 &mode10_hdr[1];
3853
3854 /*
3855 * We also have to have enough data to include the prot_bits
3856 * in the subpage.
3857 */
3858 if (returned_len < (sizeof(*mode10_hdr) +
3859 __offsetof(struct scsi_control_data_prot_subpage, prot_bits)
3860 + sizeof(dp_page->prot_bits))) {
3861 error = EINVAL;
3862 free(mode10_hdr, M_SCSISA);
3863 goto sagetparamsexit;
3864 }
3865
3866 prot = &softc->prot_info.cur_prot_state;
3867 prot->prot_method = dp_page->prot_method;
3868 prot->pi_length = dp_page->pi_length &
3869 SA_CTRL_DP_PI_LENGTH_MASK;
3870 prot->lbp_w = (dp_page->prot_bits & SA_CTRL_DP_LBP_W) ? 1 :0;
3871 prot->lbp_r = (dp_page->prot_bits & SA_CTRL_DP_LBP_R) ? 1 :0;
3872 prot->rbdp = (dp_page->prot_bits & SA_CTRL_DP_RBDP) ? 1 :0;
3873 prot->initialized = 1;
3874
3875 if (prot_page != NULL)
3876 bcopy(dp_page, prot_page, min(sizeof(*prot_page),
3877 sizeof(*dp_page)));
3878
3879 free(mode10_hdr, M_SCSISA);
3880 }
3881
3882 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
3883 int idx;
3884 char *xyz = mode_buffer;
3885 xpt_print_path(periph->path);
3886 printf("Mode Sense Data=");
3887 for (idx = 0; idx < mode_buffer_len; idx++)
3888 printf(" 0x%02x", xyz[idx] & 0xff);
3889 printf("\n");
3890 }
3891
3892 sagetparamsexit:
3893
3894 xpt_release_ccb(ccb);
3895 free(mode_buffer, M_SCSISA);
3896 return (error);
3897 }
3898
3899 /*
3900 * Set protection information to the pending protection information stored
3901 * in the softc.
3902 */
3903 static int
sasetprot(struct cam_periph * periph,struct sa_prot_state * new_prot)3904 sasetprot(struct cam_periph *periph, struct sa_prot_state *new_prot)
3905 {
3906 struct sa_softc *softc;
3907 struct scsi_control_data_prot_subpage *dp_page, *dp_changeable;
3908 struct scsi_mode_header_10 *mode10_hdr, *mode10_changeable;
3909 union ccb *ccb;
3910 uint8_t current_speed;
3911 size_t dp_size, dp_page_length;
3912 int dp_len, buff_mode;
3913 int error;
3914
3915 softc = (struct sa_softc *)periph->softc;
3916 mode10_hdr = NULL;
3917 mode10_changeable = NULL;
3918 ccb = NULL;
3919
3920 /*
3921 * Start off with the size set to the actual length of the page
3922 * that we have defined.
3923 */
3924 dp_size = sizeof(*dp_changeable);
3925 dp_page_length = dp_size -
3926 __offsetof(struct scsi_control_data_prot_subpage, prot_method);
3927
3928 retry_length:
3929
3930 dp_len = sizeof(*mode10_changeable) + dp_size;
3931 mode10_changeable = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO);
3932 if (mode10_changeable == NULL) {
3933 error = ENOMEM;
3934 goto bailout;
3935 }
3936
3937 dp_changeable =
3938 (struct scsi_control_data_prot_subpage *)&mode10_changeable[1];
3939
3940 /*
3941 * First get the data protection page changeable parameters mask.
3942 * We need to know which parameters the drive supports changing.
3943 * We also need to know what the drive claims that its page length
3944 * is. The reason is that IBM drives in particular are very picky
3945 * about the page length. They want it (the length set in the
3946 * page structure itself) to be 28 bytes, and they want the
3947 * parameter list length specified in the mode select header to be
3948 * 40 bytes. So, to work with IBM drives as well as any other tape
3949 * drive, find out what the drive claims the page length is, and
3950 * make sure that we match that.
3951 */
3952 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP,
3953 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL,
3954 NULL, NULL, dp_changeable, dp_size, /*prot_changeable*/ 1);
3955 if (error != 0)
3956 goto bailout;
3957
3958 if (scsi_2btoul(dp_changeable->length) > dp_page_length) {
3959 dp_page_length = scsi_2btoul(dp_changeable->length);
3960 dp_size = dp_page_length +
3961 __offsetof(struct scsi_control_data_prot_subpage,
3962 prot_method);
3963 free(mode10_changeable, M_SCSISA);
3964 mode10_changeable = NULL;
3965 goto retry_length;
3966 }
3967
3968 mode10_hdr = malloc(dp_len, M_SCSISA, M_NOWAIT | M_ZERO);
3969 if (mode10_hdr == NULL) {
3970 error = ENOMEM;
3971 goto bailout;
3972 }
3973
3974 dp_page = (struct scsi_control_data_prot_subpage *)&mode10_hdr[1];
3975
3976 /*
3977 * Now grab the actual current settings in the page.
3978 */
3979 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP,
3980 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL,
3981 NULL, NULL, dp_page, dp_size, /*prot_changeable*/ 0);
3982 if (error != 0)
3983 goto bailout;
3984
3985 /* These two fields need to be 0 for MODE SELECT */
3986 scsi_ulto2b(0, mode10_hdr->data_length);
3987 mode10_hdr->medium_type = 0;
3988 /* We are not including a block descriptor */
3989 scsi_ulto2b(0, mode10_hdr->blk_desc_len);
3990
3991 mode10_hdr->dev_spec = current_speed;
3992 /* if set, set single-initiator buffering mode */
3993 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
3994 mode10_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
3995 }
3996
3997 /*
3998 * For each field, make sure that the drive allows changing it
3999 * before bringing in the user's setting.
4000 */
4001 if (dp_changeable->prot_method != 0)
4002 dp_page->prot_method = new_prot->prot_method;
4003
4004 if (dp_changeable->pi_length & SA_CTRL_DP_PI_LENGTH_MASK) {
4005 dp_page->pi_length &= ~SA_CTRL_DP_PI_LENGTH_MASK;
4006 dp_page->pi_length |= (new_prot->pi_length &
4007 SA_CTRL_DP_PI_LENGTH_MASK);
4008 }
4009 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_W) {
4010 if (new_prot->lbp_w)
4011 dp_page->prot_bits |= SA_CTRL_DP_LBP_W;
4012 else
4013 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_W;
4014 }
4015
4016 if (dp_changeable->prot_bits & SA_CTRL_DP_LBP_R) {
4017 if (new_prot->lbp_r)
4018 dp_page->prot_bits |= SA_CTRL_DP_LBP_R;
4019 else
4020 dp_page->prot_bits &= ~SA_CTRL_DP_LBP_R;
4021 }
4022
4023 if (dp_changeable->prot_bits & SA_CTRL_DP_RBDP) {
4024 if (new_prot->rbdp)
4025 dp_page->prot_bits |= SA_CTRL_DP_RBDP;
4026 else
4027 dp_page->prot_bits &= ~SA_CTRL_DP_RBDP;
4028 }
4029
4030 ccb = cam_periph_getccb(periph, 1);
4031
4032 scsi_mode_select_len(&ccb->csio,
4033 /*retries*/ 5,
4034 /*cbfcnp*/ NULL,
4035 /*tag_action*/ MSG_SIMPLE_Q_TAG,
4036 /*scsi_page_fmt*/ TRUE,
4037 /*save_pages*/ FALSE,
4038 /*param_buf*/ (uint8_t *)mode10_hdr,
4039 /*param_len*/ dp_len,
4040 /*minimum_cmd_size*/ 10,
4041 /*sense_len*/ SSD_FULL_SIZE,
4042 /*timeout*/ SCSIOP_TIMEOUT);
4043
4044 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
4045 if (error != 0)
4046 goto bailout;
4047
4048 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
4049 error = EINVAL;
4050 goto bailout;
4051 }
4052
4053 /*
4054 * The operation was successful. We could just copy the settings
4055 * the user requested, but just in case the drive ignored some of
4056 * our settings, let's ask for status again.
4057 */
4058 error = sagetparams(periph, SA_PARAM_SPEED | SA_PARAM_LBP,
4059 NULL, NULL, NULL, &buff_mode, NULL, ¤t_speed, NULL, NULL,
4060 NULL, NULL, dp_page, dp_size, 0);
4061
4062 bailout:
4063 if (ccb != NULL)
4064 xpt_release_ccb(ccb);
4065 free(mode10_hdr, M_SCSISA);
4066 free(mode10_changeable, M_SCSISA);
4067 return (error);
4068 }
4069
4070 /*
4071 * The purpose of this function is to set one of four different parameters
4072 * for a tape drive:
4073 * - blocksize
4074 * - density
4075 * - compression / compression algorithm
4076 * - buffering mode
4077 *
4078 * The assumption is that this will be called from saioctl(), and therefore
4079 * from a process context. Thus the waiting malloc calls below. If that
4080 * assumption ever changes, the malloc calls should be changed to be
4081 * NOWAIT mallocs.
4082 *
4083 * Any or all of the four parameters may be set when this function is
4084 * called. It should handle setting more than one parameter at once.
4085 */
4086 static int
sasetparams(struct cam_periph * periph,sa_params params_to_set,u_int32_t blocksize,u_int8_t density,u_int32_t calg,u_int32_t sense_flags)4087 sasetparams(struct cam_periph *periph, sa_params params_to_set,
4088 u_int32_t blocksize, u_int8_t density, u_int32_t calg,
4089 u_int32_t sense_flags)
4090 {
4091 struct sa_softc *softc;
4092 u_int32_t current_blocksize;
4093 u_int32_t current_calg;
4094 u_int8_t current_density;
4095 u_int8_t current_speed;
4096 int comp_enabled, comp_supported;
4097 void *mode_buffer;
4098 int mode_buffer_len;
4099 struct scsi_mode_header_6 *mode_hdr;
4100 struct scsi_mode_blk_desc *mode_blk;
4101 sa_comp_t *ccomp, *cpage;
4102 int buff_mode;
4103 union ccb *ccb = NULL;
4104 int error;
4105
4106 softc = (struct sa_softc *)periph->softc;
4107
4108 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT);
4109 if (ccomp == NULL)
4110 return (ENOMEM);
4111
4112 /*
4113 * Since it doesn't make sense to set the number of blocks, or
4114 * write protection, we won't try to get the current value. We
4115 * always want to get the blocksize, so we can set it back to the
4116 * proper value.
4117 */
4118 error = sagetparams(periph,
4119 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED,
4120 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL,
4121 ¤t_speed, &comp_supported, &comp_enabled,
4122 ¤t_calg, ccomp, NULL, 0, 0);
4123
4124 if (error != 0) {
4125 free(ccomp, M_SCSISA);
4126 return (error);
4127 }
4128
4129 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk);
4130 if (params_to_set & SA_PARAM_COMPRESSION)
4131 mode_buffer_len += sizeof (sa_comp_t);
4132
4133 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO);
4134 if (mode_buffer == NULL) {
4135 free(ccomp, M_SCSISA);
4136 return (ENOMEM);
4137 }
4138
4139 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer;
4140 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
4141
4142 ccb = cam_periph_getccb(periph, 1);
4143
4144 retry:
4145
4146 if (params_to_set & SA_PARAM_COMPRESSION) {
4147 if (mode_blk) {
4148 cpage = (sa_comp_t *)&mode_blk[1];
4149 } else {
4150 cpage = (sa_comp_t *)&mode_hdr[1];
4151 }
4152 bcopy(ccomp, cpage, sizeof (sa_comp_t));
4153 cpage->hdr.pagecode &= ~0x80;
4154 } else
4155 cpage = NULL;
4156
4157 /*
4158 * If the caller wants us to set the blocksize, use the one they
4159 * pass in. Otherwise, use the blocksize we got back from the
4160 * mode select above.
4161 */
4162 if (mode_blk) {
4163 if (params_to_set & SA_PARAM_BLOCKSIZE)
4164 scsi_ulto3b(blocksize, mode_blk->blklen);
4165 else
4166 scsi_ulto3b(current_blocksize, mode_blk->blklen);
4167
4168 /*
4169 * Set density if requested, else preserve old density.
4170 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
4171 * devices, else density we've latched up in our softc.
4172 */
4173 if (params_to_set & SA_PARAM_DENSITY) {
4174 mode_blk->density = density;
4175 } else if (softc->scsi_rev > SCSI_REV_CCS) {
4176 mode_blk->density = SCSI_SAME_DENSITY;
4177 } else {
4178 mode_blk->density = softc->media_density;
4179 }
4180 }
4181
4182 /*
4183 * For mode selects, these two fields must be zero.
4184 */
4185 mode_hdr->data_length = 0;
4186 mode_hdr->medium_type = 0;
4187
4188 /* set the speed to the current value */
4189 mode_hdr->dev_spec = current_speed;
4190
4191 /* if set, set single-initiator buffering mode */
4192 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) {
4193 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF;
4194 }
4195
4196 if (mode_blk)
4197 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc);
4198 else
4199 mode_hdr->blk_desc_len = 0;
4200
4201 /*
4202 * First, if the user wants us to set the compression algorithm or
4203 * just turn compression on, check to make sure that this drive
4204 * supports compression.
4205 */
4206 if (params_to_set & SA_PARAM_COMPRESSION) {
4207 /*
4208 * If the compression algorithm is 0, disable compression.
4209 * If the compression algorithm is non-zero, enable
4210 * compression and set the compression type to the
4211 * specified compression algorithm, unless the algorithm is
4212 * MT_COMP_ENABLE. In that case, we look at the
4213 * compression algorithm that is currently set and if it is
4214 * non-zero, we leave it as-is. If it is zero, and we have
4215 * saved a compression algorithm from a time when
4216 * compression was enabled before, set the compression to
4217 * the saved value.
4218 */
4219 switch (ccomp->hdr.pagecode & ~0x80) {
4220 case SA_DEVICE_CONFIGURATION_PAGE:
4221 {
4222 struct scsi_dev_conf_page *dcp = &cpage->dconf;
4223 if (calg == 0) {
4224 dcp->sel_comp_alg = SA_COMP_NONE;
4225 break;
4226 }
4227 if (calg != MT_COMP_ENABLE) {
4228 dcp->sel_comp_alg = calg;
4229 } else if (dcp->sel_comp_alg == SA_COMP_NONE &&
4230 softc->saved_comp_algorithm != 0) {
4231 dcp->sel_comp_alg = softc->saved_comp_algorithm;
4232 }
4233 break;
4234 }
4235 case SA_DATA_COMPRESSION_PAGE:
4236 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) {
4237 struct scsi_data_compression_page *dcp = &cpage->dcomp;
4238 if (calg == 0) {
4239 /*
4240 * Disable compression, but leave the
4241 * decompression and the capability bit
4242 * alone.
4243 */
4244 dcp->dce_and_dcc = SA_DCP_DCC;
4245 dcp->dde_and_red |= SA_DCP_DDE;
4246 break;
4247 }
4248 /* enable compression && decompression */
4249 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC;
4250 dcp->dde_and_red |= SA_DCP_DDE;
4251 /*
4252 * If there, use compression algorithm from caller.
4253 * Otherwise, if there's a saved compression algorithm
4254 * and there is no current algorithm, use the saved
4255 * algorithm. Else parrot back what we got and hope
4256 * for the best.
4257 */
4258 if (calg != MT_COMP_ENABLE) {
4259 scsi_ulto4b(calg, dcp->comp_algorithm);
4260 scsi_ulto4b(calg, dcp->decomp_algorithm);
4261 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 &&
4262 softc->saved_comp_algorithm != 0) {
4263 scsi_ulto4b(softc->saved_comp_algorithm,
4264 dcp->comp_algorithm);
4265 scsi_ulto4b(softc->saved_comp_algorithm,
4266 dcp->decomp_algorithm);
4267 }
4268 break;
4269 }
4270 /*
4271 * Compression does not appear to be supported-
4272 * at least via the DATA COMPRESSION page. It
4273 * would be too much to ask us to believe that
4274 * the page itself is supported, but incorrectly
4275 * reports an ability to manipulate data compression,
4276 * so we'll assume that this device doesn't support
4277 * compression. We can just fall through for that.
4278 */
4279 /* FALLTHROUGH */
4280 default:
4281 /*
4282 * The drive doesn't seem to support compression,
4283 * so turn off the set compression bit.
4284 */
4285 params_to_set &= ~SA_PARAM_COMPRESSION;
4286 xpt_print(periph->path,
4287 "device does not seem to support compression\n");
4288
4289 /*
4290 * If that was the only thing the user wanted us to set,
4291 * clean up allocated resources and return with
4292 * 'operation not supported'.
4293 */
4294 if (params_to_set == SA_PARAM_NONE) {
4295 free(mode_buffer, M_SCSISA);
4296 xpt_release_ccb(ccb);
4297 return (ENODEV);
4298 }
4299
4300 /*
4301 * That wasn't the only thing the user wanted us to set.
4302 * So, decrease the stated mode buffer length by the
4303 * size of the compression mode page.
4304 */
4305 mode_buffer_len -= sizeof(sa_comp_t);
4306 }
4307 }
4308
4309 /* It is safe to retry this operation */
4310 scsi_mode_select(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG,
4311 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE,
4312 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
4313
4314 error = cam_periph_runccb(ccb, saerror, 0,
4315 sense_flags, softc->device_stats);
4316
4317 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
4318 int idx;
4319 char *xyz = mode_buffer;
4320 xpt_print_path(periph->path);
4321 printf("Err%d, Mode Select Data=", error);
4322 for (idx = 0; idx < mode_buffer_len; idx++)
4323 printf(" 0x%02x", xyz[idx] & 0xff);
4324 printf("\n");
4325 }
4326
4327
4328 if (error) {
4329 /*
4330 * If we can, try without setting density/blocksize.
4331 */
4332 if (mode_blk) {
4333 if ((params_to_set &
4334 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) {
4335 mode_blk = NULL;
4336 goto retry;
4337 }
4338 } else {
4339 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1];
4340 cpage = (sa_comp_t *)&mode_blk[1];
4341 }
4342
4343 /*
4344 * If we were setting the blocksize, and that failed, we
4345 * want to set it to its original value. If we weren't
4346 * setting the blocksize, we don't want to change it.
4347 */
4348 scsi_ulto3b(current_blocksize, mode_blk->blklen);
4349
4350 /*
4351 * Set density if requested, else preserve old density.
4352 * SCSI_SAME_DENSITY only applies to SCSI-2 or better
4353 * devices, else density we've latched up in our softc.
4354 */
4355 if (params_to_set & SA_PARAM_DENSITY) {
4356 mode_blk->density = current_density;
4357 } else if (softc->scsi_rev > SCSI_REV_CCS) {
4358 mode_blk->density = SCSI_SAME_DENSITY;
4359 } else {
4360 mode_blk->density = softc->media_density;
4361 }
4362
4363 if (params_to_set & SA_PARAM_COMPRESSION)
4364 bcopy(ccomp, cpage, sizeof (sa_comp_t));
4365
4366 /*
4367 * The retry count is the only CCB field that might have been
4368 * changed that we care about, so reset it back to 1.
4369 */
4370 ccb->ccb_h.retry_count = 1;
4371 cam_periph_runccb(ccb, saerror, 0, sense_flags,
4372 softc->device_stats);
4373 }
4374
4375 xpt_release_ccb(ccb);
4376
4377 if (ccomp != NULL)
4378 free(ccomp, M_SCSISA);
4379
4380 if (params_to_set & SA_PARAM_COMPRESSION) {
4381 if (error) {
4382 softc->flags &= ~SA_FLAG_COMP_ENABLED;
4383 /*
4384 * Even if we get an error setting compression,
4385 * do not say that we don't support it. We could
4386 * have been wrong, or it may be media specific.
4387 * softc->flags &= ~SA_FLAG_COMP_SUPP;
4388 */
4389 softc->saved_comp_algorithm = softc->comp_algorithm;
4390 softc->comp_algorithm = 0;
4391 } else {
4392 softc->flags |= SA_FLAG_COMP_ENABLED;
4393 softc->comp_algorithm = calg;
4394 }
4395 }
4396
4397 free(mode_buffer, M_SCSISA);
4398 return (error);
4399 }
4400
4401 static int
saextget(struct cdev * dev,struct cam_periph * periph,struct sbuf * sb,struct mtextget * g)4402 saextget(struct cdev *dev, struct cam_periph *periph, struct sbuf *sb,
4403 struct mtextget *g)
4404 {
4405 int indent, error;
4406 char tmpstr[80];
4407 struct sa_softc *softc;
4408 int tmpint;
4409 uint32_t maxio_tmp;
4410 struct ccb_getdev cgd;
4411
4412 softc = (struct sa_softc *)periph->softc;
4413
4414 error = 0;
4415
4416 error = sagetparams_common(dev, periph);
4417 if (error)
4418 goto extget_bailout;
4419 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount)
4420 sagetpos(periph);
4421
4422 indent = 0;
4423 SASBADDNODE(sb, indent, mtextget);
4424 /*
4425 * Basic CAM peripheral information.
4426 */
4427 SASBADDVARSTR(sb, indent, periph->periph_name, %s, periph_name,
4428 strlen(periph->periph_name) + 1);
4429 SASBADDUINT(sb, indent, periph->unit_number, %u, unit_number);
4430 xpt_setup_ccb(&cgd.ccb_h,
4431 periph->path,
4432 CAM_PRIORITY_NORMAL);
4433 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
4434 xpt_action((union ccb *)&cgd);
4435 if ((cgd.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
4436 g->status = MT_EXT_GET_ERROR;
4437 snprintf(g->error_str, sizeof(g->error_str),
4438 "Error %#x returned for XPT_GDEV_TYPE CCB",
4439 cgd.ccb_h.status);
4440 goto extget_bailout;
4441 }
4442
4443 cam_strvis(tmpstr, cgd.inq_data.vendor,
4444 sizeof(cgd.inq_data.vendor), sizeof(tmpstr));
4445 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, vendor,
4446 sizeof(cgd.inq_data.vendor) + 1, "SCSI Vendor ID");
4447
4448 cam_strvis(tmpstr, cgd.inq_data.product,
4449 sizeof(cgd.inq_data.product), sizeof(tmpstr));
4450 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, product,
4451 sizeof(cgd.inq_data.product) + 1, "SCSI Product ID");
4452
4453 cam_strvis(tmpstr, cgd.inq_data.revision,
4454 sizeof(cgd.inq_data.revision), sizeof(tmpstr));
4455 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, revision,
4456 sizeof(cgd.inq_data.revision) + 1, "SCSI Revision");
4457
4458 if (cgd.serial_num_len > 0) {
4459 char *tmpstr2;
4460 size_t ts2_len;
4461 int ts2_malloc;
4462
4463 ts2_len = 0;
4464
4465 if (cgd.serial_num_len > sizeof(tmpstr)) {
4466 ts2_len = cgd.serial_num_len + 1;
4467 ts2_malloc = 1;
4468 tmpstr2 = malloc(ts2_len, M_SCSISA, M_NOWAIT | M_ZERO);
4469 /*
4470 * The 80 characters allocated on the stack above
4471 * will handle the vast majority of serial numbers.
4472 * If we run into one that is larger than that, and
4473 * we can't malloc the length without blocking,
4474 * bail out with an out of memory error.
4475 */
4476 if (tmpstr2 == NULL) {
4477 error = ENOMEM;
4478 goto extget_bailout;
4479 }
4480 } else {
4481 ts2_len = sizeof(tmpstr);
4482 ts2_malloc = 0;
4483 tmpstr2 = tmpstr;
4484 }
4485
4486 cam_strvis(tmpstr2, cgd.serial_num, cgd.serial_num_len,
4487 ts2_len);
4488
4489 SASBADDVARSTRDESC(sb, indent, tmpstr2, %s, serial_num,
4490 (ssize_t)cgd.serial_num_len + 1, "Serial Number");
4491 if (ts2_malloc != 0)
4492 free(tmpstr2, M_SCSISA);
4493 } else {
4494 /*
4495 * We return a serial_num element in any case, but it will
4496 * be empty if the device has no serial number.
4497 */
4498 tmpstr[0] = '\0';
4499 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, serial_num,
4500 (ssize_t)0, "Serial Number");
4501 }
4502
4503 SASBADDUINTDESC(sb, indent, softc->maxio, %u, maxio,
4504 "Maximum I/O size allowed by driver and controller");
4505
4506 SASBADDUINTDESC(sb, indent, softc->cpi_maxio, %u, cpi_maxio,
4507 "Maximum I/O size reported by controller");
4508
4509 SASBADDUINTDESC(sb, indent, softc->max_blk, %u, max_blk,
4510 "Maximum block size supported by tape drive and media");
4511
4512 SASBADDUINTDESC(sb, indent, softc->min_blk, %u, min_blk,
4513 "Minimum block size supported by tape drive and media");
4514
4515 SASBADDUINTDESC(sb, indent, softc->blk_gran, %u, blk_gran,
4516 "Block granularity supported by tape drive and media");
4517
4518 maxio_tmp = min(softc->max_blk, softc->maxio);
4519
4520 SASBADDUINTDESC(sb, indent, maxio_tmp, %u, max_effective_iosize,
4521 "Maximum possible I/O size");
4522
4523 SASBADDINTDESC(sb, indent, softc->flags & SA_FLAG_FIXED ? 1 : 0, %d,
4524 fixed_mode, "Set to 1 for fixed block mode, 0 for variable block");
4525
4526 /*
4527 * XXX KDM include SIM, bus, target, LUN?
4528 */
4529 if (softc->flags & SA_FLAG_COMP_UNSUPP)
4530 tmpint = 0;
4531 else
4532 tmpint = 1;
4533 SASBADDINTDESC(sb, indent, tmpint, %d, compression_supported,
4534 "Set to 1 if compression is supported, 0 if not");
4535 if (softc->flags & SA_FLAG_COMP_ENABLED)
4536 tmpint = 1;
4537 else
4538 tmpint = 0;
4539 SASBADDINTDESC(sb, indent, tmpint, %d, compression_enabled,
4540 "Set to 1 if compression is enabled, 0 if not");
4541 SASBADDUINTDESC(sb, indent, softc->comp_algorithm, %u,
4542 compression_algorithm, "Numeric compression algorithm");
4543
4544 safillprot(softc, &indent, sb);
4545
4546 SASBADDUINTDESC(sb, indent, softc->media_blksize, %u,
4547 media_blocksize, "Block size reported by drive or set by user");
4548 SASBADDINTDESC(sb, indent, (intmax_t)softc->fileno, %jd,
4549 calculated_fileno, "Calculated file number, -1 if unknown");
4550 SASBADDINTDESC(sb, indent, (intmax_t)softc->blkno, %jd,
4551 calculated_rel_blkno, "Calculated block number relative to file, "
4552 "set to -1 if unknown");
4553 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_fileno, %jd,
4554 reported_fileno, "File number reported by drive, -1 if unknown");
4555 SASBADDINTDESC(sb, indent, (intmax_t)softc->rep_blkno, %jd,
4556 reported_blkno, "Block number relative to BOP/BOT reported by "
4557 "drive, -1 if unknown");
4558 SASBADDINTDESC(sb, indent, (intmax_t)softc->partition, %jd,
4559 partition, "Current partition number, 0 is the default");
4560 SASBADDINTDESC(sb, indent, softc->bop, %d, bop,
4561 "Set to 1 if drive is at the beginning of partition/tape, 0 if "
4562 "not, -1 if unknown");
4563 SASBADDINTDESC(sb, indent, softc->eop, %d, eop,
4564 "Set to 1 if drive is past early warning, 0 if not, -1 if unknown");
4565 SASBADDINTDESC(sb, indent, softc->bpew, %d, bpew,
4566 "Set to 1 if drive is past programmable early warning, 0 if not, "
4567 "-1 if unknown");
4568 SASBADDINTDESC(sb, indent, (intmax_t)softc->last_io_resid, %jd,
4569 residual, "Residual for the last I/O");
4570 /*
4571 * XXX KDM should we send a string with the current driver
4572 * status already decoded instead of a numeric value?
4573 */
4574 SASBADDINTDESC(sb, indent, softc->dsreg, %d, dsreg,
4575 "Current state of the driver");
4576
4577 safilldensitysb(softc, &indent, sb);
4578
4579 SASBENDNODE(sb, indent, mtextget);
4580
4581 extget_bailout:
4582
4583 return (error);
4584 }
4585
4586 static int
saparamget(struct sa_softc * softc,struct sbuf * sb)4587 saparamget(struct sa_softc *softc, struct sbuf *sb)
4588 {
4589 int indent;
4590
4591 indent = 0;
4592 SASBADDNODE(sb, indent, mtparamget);
4593 SASBADDINTDESC(sb, indent, softc->sili, %d, sili,
4594 "Suppress an error on underlength variable reads");
4595 SASBADDINTDESC(sb, indent, softc->eot_warn, %d, eot_warn,
4596 "Return an error to warn that end of tape is approaching");
4597 safillprot(softc, &indent, sb);
4598 SASBENDNODE(sb, indent, mtparamget);
4599
4600 return (0);
4601 }
4602
4603 static void
saprevent(struct cam_periph * periph,int action)4604 saprevent(struct cam_periph *periph, int action)
4605 {
4606 struct sa_softc *softc;
4607 union ccb *ccb;
4608 int error, sf;
4609
4610 softc = (struct sa_softc *)periph->softc;
4611
4612 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0)
4613 return;
4614 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0)
4615 return;
4616
4617 /*
4618 * We can be quiet about illegal requests.
4619 */
4620 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) {
4621 sf = 0;
4622 } else
4623 sf = SF_QUIET_IR;
4624
4625 ccb = cam_periph_getccb(periph, 1);
4626
4627 /* It is safe to retry this operation */
4628 scsi_prevent(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, action,
4629 SSD_FULL_SIZE, SCSIOP_TIMEOUT);
4630
4631 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats);
4632 if (error == 0) {
4633 if (action == PR_ALLOW)
4634 softc->flags &= ~SA_FLAG_TAPE_LOCKED;
4635 else
4636 softc->flags |= SA_FLAG_TAPE_LOCKED;
4637 }
4638
4639 xpt_release_ccb(ccb);
4640 }
4641
4642 static int
sarewind(struct cam_periph * periph)4643 sarewind(struct cam_periph *periph)
4644 {
4645 union ccb *ccb;
4646 struct sa_softc *softc;
4647 int error;
4648
4649 softc = (struct sa_softc *)periph->softc;
4650
4651 ccb = cam_periph_getccb(periph, 1);
4652
4653 /* It is safe to retry this operation */
4654 scsi_rewind(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG, FALSE,
4655 SSD_FULL_SIZE, REWIND_TIMEOUT);
4656
4657 softc->dsreg = MTIO_DSREG_REW;
4658 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
4659 softc->dsreg = MTIO_DSREG_REST;
4660
4661 xpt_release_ccb(ccb);
4662 if (error == 0) {
4663 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0;
4664 softc->rep_fileno = softc->rep_blkno = (daddr_t) 0;
4665 } else {
4666 softc->fileno = softc->blkno = (daddr_t) -1;
4667 softc->partition = (daddr_t) -1;
4668 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1;
4669 }
4670 return (error);
4671 }
4672
4673 static int
saspace(struct cam_periph * periph,int count,scsi_space_code code)4674 saspace(struct cam_periph *periph, int count, scsi_space_code code)
4675 {
4676 union ccb *ccb;
4677 struct sa_softc *softc;
4678 int error;
4679
4680 softc = (struct sa_softc *)periph->softc;
4681
4682 ccb = cam_periph_getccb(periph, 1);
4683
4684 /* This cannot be retried */
4685
4686 scsi_space(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG, code, count,
4687 SSD_FULL_SIZE, SPACE_TIMEOUT);
4688
4689 /*
4690 * Clear residual because we will be using it.
4691 */
4692 softc->last_ctl_resid = 0;
4693
4694 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD;
4695 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
4696 softc->dsreg = MTIO_DSREG_REST;
4697
4698 xpt_release_ccb(ccb);
4699
4700 /*
4701 * If a spacing operation has failed, we need to invalidate
4702 * this mount.
4703 *
4704 * If the spacing operation was setmarks or to end of recorded data,
4705 * we no longer know our relative position.
4706 *
4707 * If the spacing operations was spacing files in reverse, we
4708 * take account of the residual, but still check against less
4709 * than zero- if we've gone negative, we must have hit BOT.
4710 *
4711 * If the spacing operations was spacing records in reverse and
4712 * we have a residual, we've either hit BOT or hit a filemark.
4713 * In the former case, we know our new record number (0). In
4714 * the latter case, we have absolutely no idea what the real
4715 * record number is- we've stopped between the end of the last
4716 * record in the previous file and the filemark that stopped
4717 * our spacing backwards.
4718 */
4719 if (error) {
4720 softc->fileno = softc->blkno = (daddr_t) -1;
4721 softc->rep_blkno = softc->partition = (daddr_t) -1;
4722 softc->rep_fileno = (daddr_t) -1;
4723 } else if (code == SS_SETMARKS || code == SS_EOD) {
4724 softc->fileno = softc->blkno = (daddr_t) -1;
4725 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) {
4726 softc->fileno += (count - softc->last_ctl_resid);
4727 if (softc->fileno < 0) /* we must of hit BOT */
4728 softc->fileno = 0;
4729 softc->blkno = 0;
4730 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) {
4731 softc->blkno += (count - softc->last_ctl_resid);
4732 if (count < 0) {
4733 if (softc->last_ctl_resid || softc->blkno < 0) {
4734 if (softc->fileno == 0) {
4735 softc->blkno = 0;
4736 } else {
4737 softc->blkno = (daddr_t) -1;
4738 }
4739 }
4740 }
4741 }
4742 if (error == 0)
4743 sagetpos(periph);
4744
4745 return (error);
4746 }
4747
4748 static int
sawritefilemarks(struct cam_periph * periph,int nmarks,int setmarks,int immed)4749 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks, int immed)
4750 {
4751 union ccb *ccb;
4752 struct sa_softc *softc;
4753 int error, nwm = 0;
4754
4755 softc = (struct sa_softc *)periph->softc;
4756 if (softc->open_rdonly)
4757 return (EBADF);
4758
4759 ccb = cam_periph_getccb(periph, 1);
4760 /*
4761 * Clear residual because we will be using it.
4762 */
4763 softc->last_ctl_resid = 0;
4764
4765 softc->dsreg = MTIO_DSREG_FMK;
4766 /* this *must* not be retried */
4767 scsi_write_filemarks(&ccb->csio, 0, NULL, MSG_SIMPLE_Q_TAG,
4768 immed, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT);
4769 softc->dsreg = MTIO_DSREG_REST;
4770
4771
4772 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
4773
4774 if (error == 0 && nmarks) {
4775 struct sa_softc *softc = (struct sa_softc *)periph->softc;
4776 nwm = nmarks - softc->last_ctl_resid;
4777 softc->filemarks += nwm;
4778 }
4779
4780 xpt_release_ccb(ccb);
4781
4782 /*
4783 * Update relative positions (if we're doing that).
4784 */
4785 if (error) {
4786 softc->fileno = softc->blkno = softc->partition = (daddr_t) -1;
4787 } else if (softc->fileno != (daddr_t) -1) {
4788 softc->fileno += nwm;
4789 softc->blkno = 0;
4790 }
4791
4792 /*
4793 * Ask the tape drive for position information.
4794 */
4795 sagetpos(periph);
4796
4797 /*
4798 * If we got valid position information, since we just wrote a file
4799 * mark, we know we're at the file mark and block 0 after that
4800 * filemark.
4801 */
4802 if (softc->rep_fileno != (daddr_t) -1) {
4803 softc->fileno = softc->rep_fileno;
4804 softc->blkno = 0;
4805 }
4806
4807 return (error);
4808 }
4809
4810 static int
sagetpos(struct cam_periph * periph)4811 sagetpos(struct cam_periph *periph)
4812 {
4813 union ccb *ccb;
4814 struct scsi_tape_position_long_data long_pos;
4815 struct sa_softc *softc = (struct sa_softc *)periph->softc;
4816 int error;
4817
4818 if (softc->quirks & SA_QUIRK_NO_LONG_POS) {
4819 softc->rep_fileno = (daddr_t) -1;
4820 softc->rep_blkno = (daddr_t) -1;
4821 softc->bop = softc->eop = softc->bpew = -1;
4822 return (EOPNOTSUPP);
4823 }
4824
4825 bzero(&long_pos, sizeof(long_pos));
4826
4827 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
4828 scsi_read_position_10(&ccb->csio,
4829 /*retries*/ 1,
4830 /*cbfcnp*/ NULL,
4831 /*tag_action*/ MSG_SIMPLE_Q_TAG,
4832 /*service_action*/ SA_RPOS_LONG_FORM,
4833 /*data_ptr*/ (uint8_t *)&long_pos,
4834 /*length*/ sizeof(long_pos),
4835 /*sense_len*/ SSD_FULL_SIZE,
4836 /*timeout*/ SCSIOP_TIMEOUT);
4837
4838 softc->dsreg = MTIO_DSREG_RBSY;
4839 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR,
4840 softc->device_stats);
4841 softc->dsreg = MTIO_DSREG_REST;
4842
4843 if (error == 0) {
4844 if (long_pos.flags & SA_RPOS_LONG_MPU) {
4845 /*
4846 * If the drive doesn't know what file mark it is
4847 * on, our calculated filemark isn't going to be
4848 * accurate either.
4849 */
4850 softc->fileno = (daddr_t) -1;
4851 softc->rep_fileno = (daddr_t) -1;
4852 } else {
4853 softc->fileno = softc->rep_fileno =
4854 scsi_8btou64(long_pos.logical_file_num);
4855 }
4856
4857 if (long_pos.flags & SA_RPOS_LONG_LONU) {
4858 softc->partition = (daddr_t) -1;
4859 softc->rep_blkno = (daddr_t) -1;
4860 /*
4861 * If the tape drive doesn't know its block
4862 * position, we can't claim to know it either.
4863 */
4864 softc->blkno = (daddr_t) -1;
4865 } else {
4866 softc->partition = scsi_4btoul(long_pos.partition);
4867 softc->rep_blkno =
4868 scsi_8btou64(long_pos.logical_object_num);
4869 }
4870 if (long_pos.flags & SA_RPOS_LONG_BOP)
4871 softc->bop = 1;
4872 else
4873 softc->bop = 0;
4874
4875 if (long_pos.flags & SA_RPOS_LONG_EOP)
4876 softc->eop = 1;
4877 else
4878 softc->eop = 0;
4879
4880 if ((long_pos.flags & SA_RPOS_LONG_BPEW)
4881 || (softc->set_pews_status != 0)) {
4882 softc->bpew = 1;
4883 if (softc->set_pews_status > 0)
4884 softc->set_pews_status--;
4885 } else
4886 softc->bpew = 0;
4887 } else if (error == EINVAL) {
4888 /*
4889 * If this drive returned an invalid-request type error,
4890 * then it likely doesn't support the long form report.
4891 */
4892 softc->quirks |= SA_QUIRK_NO_LONG_POS;
4893 }
4894
4895 if (error != 0) {
4896 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1;
4897 softc->partition = (daddr_t) -1;
4898 softc->bop = softc->eop = softc->bpew = -1;
4899 }
4900
4901 xpt_release_ccb(ccb);
4902
4903 return (error);
4904 }
4905
4906 static int
sardpos(struct cam_periph * periph,int hard,u_int32_t * blkptr)4907 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr)
4908 {
4909 struct scsi_tape_position_data loc;
4910 union ccb *ccb;
4911 struct sa_softc *softc = (struct sa_softc *)periph->softc;
4912 int error;
4913
4914 /*
4915 * We try and flush any buffered writes here if we were writing
4916 * and we're trying to get hardware block position. It eats
4917 * up performance substantially, but I'm wary of drive firmware.
4918 *
4919 * I think that *logical* block position is probably okay-
4920 * but hardware block position might have to wait for data
4921 * to hit media to be valid. Caveat Emptor.
4922 */
4923
4924 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) {
4925 error = sawritefilemarks(periph, 0, 0, 0);
4926 if (error && error != EACCES)
4927 return (error);
4928 }
4929
4930 ccb = cam_periph_getccb(periph, 1);
4931 scsi_read_position(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG,
4932 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT);
4933 softc->dsreg = MTIO_DSREG_RBSY;
4934 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
4935 softc->dsreg = MTIO_DSREG_REST;
4936
4937 if (error == 0) {
4938 if (loc.flags & SA_RPOS_UNCERTAIN) {
4939 error = EINVAL; /* nothing is certain */
4940 } else {
4941 *blkptr = scsi_4btoul(loc.firstblk);
4942 }
4943 }
4944
4945 xpt_release_ccb(ccb);
4946 return (error);
4947 }
4948
4949 static int
sasetpos(struct cam_periph * periph,int hard,struct mtlocate * locate_info)4950 sasetpos(struct cam_periph *periph, int hard, struct mtlocate *locate_info)
4951 {
4952 union ccb *ccb;
4953 struct sa_softc *softc;
4954 int locate16;
4955 int immed, cp;
4956 int error;
4957
4958 /*
4959 * We used to try and flush any buffered writes here.
4960 * Now we push this onto user applications to either
4961 * flush the pending writes themselves (via a zero count
4962 * WRITE FILEMARKS command) or they can trust their tape
4963 * drive to do this correctly for them.
4964 */
4965
4966 softc = (struct sa_softc *)periph->softc;
4967 ccb = cam_periph_getccb(periph, 1);
4968
4969 cp = locate_info->flags & MT_LOCATE_FLAG_CHANGE_PART ? 1 : 0;
4970 immed = locate_info->flags & MT_LOCATE_FLAG_IMMED ? 1 : 0;
4971
4972 /*
4973 * Determine whether we have to use LOCATE or LOCATE16. The hard
4974 * bit is only possible with LOCATE, but the new ioctls do not
4975 * allow setting that bit. So we can't get into the situation of
4976 * having the hard bit set with a block address that is larger than
4977 * 32-bits.
4978 */
4979 if (hard != 0)
4980 locate16 = 0;
4981 else if ((locate_info->dest_type != MT_LOCATE_DEST_OBJECT)
4982 || (locate_info->block_address_mode != MT_LOCATE_BAM_IMPLICIT)
4983 || (locate_info->logical_id > SA_SPOS_MAX_BLK))
4984 locate16 = 1;
4985 else
4986 locate16 = 0;
4987
4988 if (locate16 != 0) {
4989 scsi_locate_16(&ccb->csio,
4990 /*retries*/ 1,
4991 /*cbfcnp*/ NULL,
4992 /*tag_action*/ MSG_SIMPLE_Q_TAG,
4993 /*immed*/ immed,
4994 /*cp*/ cp,
4995 /*dest_type*/ locate_info->dest_type,
4996 /*bam*/ locate_info->block_address_mode,
4997 /*partition*/ locate_info->partition,
4998 /*logical_id*/ locate_info->logical_id,
4999 /*sense_len*/ SSD_FULL_SIZE,
5000 /*timeout*/ SPACE_TIMEOUT);
5001 } else {
5002 scsi_locate_10(&ccb->csio,
5003 /*retries*/ 1,
5004 /*cbfcnp*/ NULL,
5005 /*tag_action*/ MSG_SIMPLE_Q_TAG,
5006 /*immed*/ immed,
5007 /*cp*/ cp,
5008 /*hard*/ hard,
5009 /*partition*/ locate_info->partition,
5010 /*block_address*/ locate_info->logical_id,
5011 /*sense_len*/ SSD_FULL_SIZE,
5012 /*timeout*/ SPACE_TIMEOUT);
5013 }
5014
5015 softc->dsreg = MTIO_DSREG_POS;
5016 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
5017 softc->dsreg = MTIO_DSREG_REST;
5018 xpt_release_ccb(ccb);
5019
5020 /*
5021 * We assume the calculated file and block numbers are unknown
5022 * unless we have enough information to populate them.
5023 */
5024 softc->fileno = softc->blkno = (daddr_t) -1;
5025
5026 /*
5027 * If the user requested changing the partition and the request
5028 * succeeded, note the partition.
5029 */
5030 if ((error == 0)
5031 && (cp != 0))
5032 softc->partition = locate_info->partition;
5033 else
5034 softc->partition = (daddr_t) -1;
5035
5036 if (error == 0) {
5037 switch (locate_info->dest_type) {
5038 case MT_LOCATE_DEST_FILE:
5039 /*
5040 * This is the only case where we can reliably
5041 * calculate the file and block numbers.
5042 */
5043 softc->fileno = locate_info->logical_id;
5044 softc->blkno = 0;
5045 break;
5046 case MT_LOCATE_DEST_OBJECT:
5047 case MT_LOCATE_DEST_SET:
5048 case MT_LOCATE_DEST_EOD:
5049 default:
5050 break;
5051 }
5052 }
5053
5054 /*
5055 * Ask the drive for current position information.
5056 */
5057 sagetpos(periph);
5058
5059 return (error);
5060 }
5061
5062 static int
saretension(struct cam_periph * periph)5063 saretension(struct cam_periph *periph)
5064 {
5065 union ccb *ccb;
5066 struct sa_softc *softc;
5067 int error;
5068
5069 softc = (struct sa_softc *)periph->softc;
5070
5071 ccb = cam_periph_getccb(periph, 1);
5072
5073 /* It is safe to retry this operation */
5074 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE,
5075 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT);
5076
5077 softc->dsreg = MTIO_DSREG_TEN;
5078 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
5079 softc->dsreg = MTIO_DSREG_REST;
5080
5081 xpt_release_ccb(ccb);
5082 if (error == 0) {
5083 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0;
5084 sagetpos(periph);
5085 } else
5086 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1;
5087 return (error);
5088 }
5089
5090 static int
sareservereleaseunit(struct cam_periph * periph,int reserve)5091 sareservereleaseunit(struct cam_periph *periph, int reserve)
5092 {
5093 union ccb *ccb;
5094 struct sa_softc *softc;
5095 int error;
5096
5097 softc = (struct sa_softc *)periph->softc;
5098 ccb = cam_periph_getccb(periph, 1);
5099
5100 /* It is safe to retry this operation */
5101 scsi_reserve_release_unit(&ccb->csio, 2, NULL, MSG_SIMPLE_Q_TAG,
5102 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve);
5103 softc->dsreg = MTIO_DSREG_RBSY;
5104 error = cam_periph_runccb(ccb, saerror, 0,
5105 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats);
5106 softc->dsreg = MTIO_DSREG_REST;
5107 xpt_release_ccb(ccb);
5108
5109 /*
5110 * If the error was Illegal Request, then the device doesn't support
5111 * RESERVE/RELEASE. This is not an error.
5112 */
5113 if (error == EINVAL) {
5114 error = 0;
5115 }
5116
5117 return (error);
5118 }
5119
5120 static int
saloadunload(struct cam_periph * periph,int load)5121 saloadunload(struct cam_periph *periph, int load)
5122 {
5123 union ccb *ccb;
5124 struct sa_softc *softc;
5125 int error;
5126
5127 softc = (struct sa_softc *)periph->softc;
5128
5129 ccb = cam_periph_getccb(periph, 1);
5130
5131 /* It is safe to retry this operation */
5132 scsi_load_unload(&ccb->csio, 5, NULL, MSG_SIMPLE_Q_TAG, FALSE,
5133 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT);
5134
5135 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL;
5136 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
5137 softc->dsreg = MTIO_DSREG_REST;
5138 xpt_release_ccb(ccb);
5139
5140 if (error || load == 0) {
5141 softc->partition = softc->fileno = softc->blkno = (daddr_t) -1;
5142 softc->rep_fileno = softc->rep_blkno = (daddr_t) -1;
5143 } else if (error == 0) {
5144 softc->partition = softc->fileno = softc->blkno = (daddr_t) 0;
5145 sagetpos(periph);
5146 }
5147 return (error);
5148 }
5149
5150 static int
saerase(struct cam_periph * periph,int longerase)5151 saerase(struct cam_periph *periph, int longerase)
5152 {
5153
5154 union ccb *ccb;
5155 struct sa_softc *softc;
5156 int error;
5157
5158 softc = (struct sa_softc *)periph->softc;
5159 if (softc->open_rdonly)
5160 return (EBADF);
5161
5162 ccb = cam_periph_getccb(periph, 1);
5163
5164 scsi_erase(&ccb->csio, 1, NULL, MSG_SIMPLE_Q_TAG, FALSE, longerase,
5165 SSD_FULL_SIZE, ERASE_TIMEOUT);
5166
5167 softc->dsreg = MTIO_DSREG_ZER;
5168 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats);
5169 softc->dsreg = MTIO_DSREG_REST;
5170
5171 xpt_release_ccb(ccb);
5172 return (error);
5173 }
5174
5175 /*
5176 * Fill an sbuf with density data in XML format. This particular macro
5177 * works for multi-byte integer fields.
5178 *
5179 * Note that 1 byte fields aren't supported here. The reason is that the
5180 * compiler does not evaluate the sizeof(), and assumes that any of the
5181 * sizes are possible for a given field. So passing in a multi-byte
5182 * field will result in a warning that the assignment makes an integer
5183 * from a pointer without a cast, if there is an assignment in the 1 byte
5184 * case.
5185 */
5186 #define SAFILLDENSSB(dens_data, sb, indent, field, desc_remain, \
5187 len_to_go, cur_offset, desc){ \
5188 size_t cur_field_len; \
5189 \
5190 cur_field_len = sizeof(dens_data->field); \
5191 if (desc_remain < cur_field_len) { \
5192 len_to_go -= desc_remain; \
5193 cur_offset += desc_remain; \
5194 continue; \
5195 } \
5196 len_to_go -= cur_field_len; \
5197 cur_offset += cur_field_len; \
5198 desc_remain -= cur_field_len; \
5199 \
5200 switch (sizeof(dens_data->field)) { \
5201 case 1: \
5202 KASSERT(1 == 0, ("Programmer error, invalid 1 byte " \
5203 "field width for SAFILLDENSFIELD")); \
5204 break; \
5205 case 2: \
5206 SASBADDUINTDESC(sb, indent, \
5207 scsi_2btoul(dens_data->field), %u, field, desc); \
5208 break; \
5209 case 3: \
5210 SASBADDUINTDESC(sb, indent, \
5211 scsi_3btoul(dens_data->field), %u, field, desc); \
5212 break; \
5213 case 4: \
5214 SASBADDUINTDESC(sb, indent, \
5215 scsi_4btoul(dens_data->field), %u, field, desc); \
5216 break; \
5217 case 8: \
5218 SASBADDUINTDESC(sb, indent, \
5219 (uintmax_t)scsi_8btou64(dens_data->field), %ju, \
5220 field, desc); \
5221 break; \
5222 default: \
5223 break; \
5224 } \
5225 };
5226 /*
5227 * Fill an sbuf with density data in XML format. This particular macro
5228 * works for strings.
5229 */
5230 #define SAFILLDENSSBSTR(dens_data, sb, indent, field, desc_remain, \
5231 len_to_go, cur_offset, desc){ \
5232 size_t cur_field_len; \
5233 char tmpstr[32]; \
5234 \
5235 cur_field_len = sizeof(dens_data->field); \
5236 if (desc_remain < cur_field_len) { \
5237 len_to_go -= desc_remain; \
5238 cur_offset += desc_remain; \
5239 continue; \
5240 } \
5241 len_to_go -= cur_field_len; \
5242 cur_offset += cur_field_len; \
5243 desc_remain -= cur_field_len; \
5244 \
5245 cam_strvis(tmpstr, dens_data->field, \
5246 sizeof(dens_data->field), sizeof(tmpstr)); \
5247 SASBADDVARSTRDESC(sb, indent, tmpstr, %s, field, \
5248 strlen(tmpstr) + 1, desc); \
5249 };
5250
5251 /*
5252 * Fill an sbuf with density data descriptors.
5253 */
5254 static void
safilldenstypesb(struct sbuf * sb,int * indent,uint8_t * buf,int buf_len,int is_density)5255 safilldenstypesb(struct sbuf *sb, int *indent, uint8_t *buf, int buf_len,
5256 int is_density)
5257 {
5258 struct scsi_density_hdr *hdr;
5259 uint32_t hdr_len;
5260 int len_to_go, cur_offset;
5261 int length_offset;
5262 int num_reports, need_close;
5263
5264 /*
5265 * We need at least the header length. Note that this isn't an
5266 * error, not all tape drives will have every data type.
5267 */
5268 if (buf_len < sizeof(*hdr))
5269 goto bailout;
5270
5271
5272 hdr = (struct scsi_density_hdr *)buf;
5273 hdr_len = scsi_2btoul(hdr->length);
5274 len_to_go = min(buf_len - sizeof(*hdr), hdr_len);
5275 if (is_density) {
5276 length_offset = __offsetof(struct scsi_density_data,
5277 bits_per_mm);
5278 } else {
5279 length_offset = __offsetof(struct scsi_medium_type_data,
5280 num_density_codes);
5281 }
5282 cur_offset = sizeof(*hdr);
5283
5284 num_reports = 0;
5285 need_close = 0;
5286
5287 while (len_to_go > length_offset) {
5288 struct scsi_density_data *dens_data;
5289 struct scsi_medium_type_data *type_data;
5290 int desc_remain;
5291 size_t cur_field_len;
5292
5293 dens_data = NULL;
5294 type_data = NULL;
5295
5296 if (is_density) {
5297 dens_data =(struct scsi_density_data *)&buf[cur_offset];
5298 if (dens_data->byte2 & SDD_DLV)
5299 desc_remain = scsi_2btoul(dens_data->length);
5300 else
5301 desc_remain = SDD_DEFAULT_LENGTH -
5302 length_offset;
5303 } else {
5304 type_data = (struct scsi_medium_type_data *)
5305 &buf[cur_offset];
5306 desc_remain = scsi_2btoul(type_data->length);
5307 }
5308
5309 len_to_go -= length_offset;
5310 desc_remain = min(desc_remain, len_to_go);
5311 cur_offset += length_offset;
5312
5313 if (need_close != 0) {
5314 SASBENDNODE(sb, *indent, density_entry);
5315 }
5316
5317 SASBADDNODENUM(sb, *indent, density_entry, num_reports);
5318 num_reports++;
5319 need_close = 1;
5320
5321 if (is_density) {
5322 SASBADDUINTDESC(sb, *indent,
5323 dens_data->primary_density_code, %u,
5324 primary_density_code, "Primary Density Code");
5325 SASBADDUINTDESC(sb, *indent,
5326 dens_data->secondary_density_code, %u,
5327 secondary_density_code, "Secondary Density Code");
5328 SASBADDUINTDESC(sb, *indent,
5329 dens_data->byte2 & ~SDD_DLV, %#x, density_flags,
5330 "Density Flags");
5331
5332 SAFILLDENSSB(dens_data, sb, *indent, bits_per_mm,
5333 desc_remain, len_to_go, cur_offset, "Bits per mm");
5334 SAFILLDENSSB(dens_data, sb, *indent, media_width,
5335 desc_remain, len_to_go, cur_offset, "Media width");
5336 SAFILLDENSSB(dens_data, sb, *indent, tracks,
5337 desc_remain, len_to_go, cur_offset,
5338 "Number of Tracks");
5339 SAFILLDENSSB(dens_data, sb, *indent, capacity,
5340 desc_remain, len_to_go, cur_offset, "Capacity");
5341
5342 SAFILLDENSSBSTR(dens_data, sb, *indent, assigning_org,
5343 desc_remain, len_to_go, cur_offset,
5344 "Assigning Organization");
5345
5346 SAFILLDENSSBSTR(dens_data, sb, *indent, density_name,
5347 desc_remain, len_to_go, cur_offset, "Density Name");
5348
5349 SAFILLDENSSBSTR(dens_data, sb, *indent, description,
5350 desc_remain, len_to_go, cur_offset, "Description");
5351 } else {
5352 int i;
5353
5354 SASBADDUINTDESC(sb, *indent, type_data->medium_type,
5355 %u, medium_type, "Medium Type");
5356
5357 cur_field_len =
5358 __offsetof(struct scsi_medium_type_data,
5359 media_width) -
5360 __offsetof(struct scsi_medium_type_data,
5361 num_density_codes);
5362
5363 if (desc_remain < cur_field_len) {
5364 len_to_go -= desc_remain;
5365 cur_offset += desc_remain;
5366 continue;
5367 }
5368 len_to_go -= cur_field_len;
5369 cur_offset += cur_field_len;
5370 desc_remain -= cur_field_len;
5371
5372 SASBADDINTDESC(sb, *indent,
5373 type_data->num_density_codes, %d,
5374 num_density_codes, "Number of Density Codes");
5375 SASBADDNODE(sb, *indent, density_code_list);
5376 for (i = 0; i < type_data->num_density_codes;
5377 i++) {
5378 SASBADDUINTDESC(sb, *indent,
5379 type_data->primary_density_codes[i], %u,
5380 density_code, "Density Code");
5381 }
5382 SASBENDNODE(sb, *indent, density_code_list);
5383
5384 SAFILLDENSSB(type_data, sb, *indent, media_width,
5385 desc_remain, len_to_go, cur_offset,
5386 "Media width");
5387 SAFILLDENSSB(type_data, sb, *indent, medium_length,
5388 desc_remain, len_to_go, cur_offset,
5389 "Medium length");
5390
5391 /*
5392 * Account for the two reserved bytes.
5393 */
5394 cur_field_len = sizeof(type_data->reserved2);
5395 if (desc_remain < cur_field_len) {
5396 len_to_go -= desc_remain;
5397 cur_offset += desc_remain;
5398 continue;
5399 }
5400 len_to_go -= cur_field_len;
5401 cur_offset += cur_field_len;
5402 desc_remain -= cur_field_len;
5403
5404 SAFILLDENSSBSTR(type_data, sb, *indent, assigning_org,
5405 desc_remain, len_to_go, cur_offset,
5406 "Assigning Organization");
5407 SAFILLDENSSBSTR(type_data, sb, *indent,
5408 medium_type_name, desc_remain, len_to_go,
5409 cur_offset, "Medium type name");
5410 SAFILLDENSSBSTR(type_data, sb, *indent, description,
5411 desc_remain, len_to_go, cur_offset, "Description");
5412
5413 }
5414 }
5415 if (need_close != 0) {
5416 SASBENDNODE(sb, *indent, density_entry);
5417 }
5418
5419 bailout:
5420 return;
5421 }
5422
5423 /*
5424 * Fill an sbuf with density data information
5425 */
5426 static void
safilldensitysb(struct sa_softc * softc,int * indent,struct sbuf * sb)5427 safilldensitysb(struct sa_softc *softc, int *indent, struct sbuf *sb)
5428 {
5429 int i, is_density;
5430
5431 SASBADDNODE(sb, *indent, mtdensity);
5432 SASBADDUINTDESC(sb, *indent, softc->media_density, %u, media_density,
5433 "Current Medium Density");
5434 is_density = 0;
5435 for (i = 0; i < SA_DENSITY_TYPES; i++) {
5436 int tmpint;
5437
5438 if (softc->density_info_valid[i] == 0)
5439 continue;
5440
5441 SASBADDNODE(sb, *indent, density_report);
5442 if (softc->density_type_bits[i] & SRDS_MEDIUM_TYPE) {
5443 tmpint = 1;
5444 is_density = 0;
5445 } else {
5446 tmpint = 0;
5447 is_density = 1;
5448 }
5449 SASBADDINTDESC(sb, *indent, tmpint, %d, medium_type_report,
5450 "Medium type report");
5451
5452 if (softc->density_type_bits[i] & SRDS_MEDIA)
5453 tmpint = 1;
5454 else
5455 tmpint = 0;
5456 SASBADDINTDESC(sb, *indent, tmpint, %d, media_report,
5457 "Media report");
5458
5459 safilldenstypesb(sb, indent, softc->density_info[i],
5460 softc->density_info_valid[i], is_density);
5461 SASBENDNODE(sb, *indent, density_report);
5462 }
5463 SASBENDNODE(sb, *indent, mtdensity);
5464 }
5465
5466 #endif /* _KERNEL */
5467
5468 /*
5469 * Read tape block limits command.
5470 */
5471 void
scsi_read_block_limits(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,struct scsi_read_block_limits_data * rlimit_buf,u_int8_t sense_len,u_int32_t timeout)5472 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries,
5473 void (*cbfcnp)(struct cam_periph *, union ccb *),
5474 u_int8_t tag_action,
5475 struct scsi_read_block_limits_data *rlimit_buf,
5476 u_int8_t sense_len, u_int32_t timeout)
5477 {
5478 struct scsi_read_block_limits *scsi_cmd;
5479
5480 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
5481 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len,
5482 sizeof(*scsi_cmd), timeout);
5483
5484 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes;
5485 bzero(scsi_cmd, sizeof(*scsi_cmd));
5486 scsi_cmd->opcode = READ_BLOCK_LIMITS;
5487 }
5488
5489 void
scsi_sa_read_write(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int readop,int sli,int fixed,u_int32_t length,u_int8_t * data_ptr,u_int32_t dxfer_len,u_int8_t sense_len,u_int32_t timeout)5490 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries,
5491 void (*cbfcnp)(struct cam_periph *, union ccb *),
5492 u_int8_t tag_action, int readop, int sli,
5493 int fixed, u_int32_t length, u_int8_t *data_ptr,
5494 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout)
5495 {
5496 struct scsi_sa_rw *scsi_cmd;
5497 int read;
5498
5499 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ;
5500
5501 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes;
5502 scsi_cmd->opcode = read ? SA_READ : SA_WRITE;
5503 scsi_cmd->sli_fixed = 0;
5504 if (sli && read)
5505 scsi_cmd->sli_fixed |= SAR_SLI;
5506 if (fixed)
5507 scsi_cmd->sli_fixed |= SARW_FIXED;
5508 scsi_ulto3b(length, scsi_cmd->length);
5509 scsi_cmd->control = 0;
5510
5511 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) |
5512 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0),
5513 tag_action, data_ptr, dxfer_len, sense_len,
5514 sizeof(*scsi_cmd), timeout);
5515 }
5516
5517 void
scsi_load_unload(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immediate,int eot,int reten,int load,u_int8_t sense_len,u_int32_t timeout)5518 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries,
5519 void (*cbfcnp)(struct cam_periph *, union ccb *),
5520 u_int8_t tag_action, int immediate, int eot,
5521 int reten, int load, u_int8_t sense_len,
5522 u_int32_t timeout)
5523 {
5524 struct scsi_load_unload *scsi_cmd;
5525
5526 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes;
5527 bzero(scsi_cmd, sizeof(*scsi_cmd));
5528 scsi_cmd->opcode = LOAD_UNLOAD;
5529 if (immediate)
5530 scsi_cmd->immediate = SLU_IMMED;
5531 if (eot)
5532 scsi_cmd->eot_reten_load |= SLU_EOT;
5533 if (reten)
5534 scsi_cmd->eot_reten_load |= SLU_RETEN;
5535 if (load)
5536 scsi_cmd->eot_reten_load |= SLU_LOAD;
5537
5538 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
5539 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout);
5540 }
5541
5542 void
scsi_rewind(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immediate,u_int8_t sense_len,u_int32_t timeout)5543 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries,
5544 void (*cbfcnp)(struct cam_periph *, union ccb *),
5545 u_int8_t tag_action, int immediate, u_int8_t sense_len,
5546 u_int32_t timeout)
5547 {
5548 struct scsi_rewind *scsi_cmd;
5549
5550 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes;
5551 bzero(scsi_cmd, sizeof(*scsi_cmd));
5552 scsi_cmd->opcode = REWIND;
5553 if (immediate)
5554 scsi_cmd->immediate = SREW_IMMED;
5555
5556 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
5557 0, sense_len, sizeof(*scsi_cmd), timeout);
5558 }
5559
5560 void
scsi_space(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,scsi_space_code code,u_int32_t count,u_int8_t sense_len,u_int32_t timeout)5561 scsi_space(struct ccb_scsiio *csio, u_int32_t retries,
5562 void (*cbfcnp)(struct cam_periph *, union ccb *),
5563 u_int8_t tag_action, scsi_space_code code,
5564 u_int32_t count, u_int8_t sense_len, u_int32_t timeout)
5565 {
5566 struct scsi_space *scsi_cmd;
5567
5568 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes;
5569 scsi_cmd->opcode = SPACE;
5570 scsi_cmd->code = code;
5571 scsi_ulto3b(count, scsi_cmd->count);
5572 scsi_cmd->control = 0;
5573
5574 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
5575 0, sense_len, sizeof(*scsi_cmd), timeout);
5576 }
5577
5578 void
scsi_write_filemarks(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immediate,int setmark,u_int32_t num_marks,u_int8_t sense_len,u_int32_t timeout)5579 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries,
5580 void (*cbfcnp)(struct cam_periph *, union ccb *),
5581 u_int8_t tag_action, int immediate, int setmark,
5582 u_int32_t num_marks, u_int8_t sense_len,
5583 u_int32_t timeout)
5584 {
5585 struct scsi_write_filemarks *scsi_cmd;
5586
5587 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes;
5588 bzero(scsi_cmd, sizeof(*scsi_cmd));
5589 scsi_cmd->opcode = WRITE_FILEMARKS;
5590 if (immediate)
5591 scsi_cmd->byte2 |= SWFMRK_IMMED;
5592 if (setmark)
5593 scsi_cmd->byte2 |= SWFMRK_WSMK;
5594
5595 scsi_ulto3b(num_marks, scsi_cmd->num_marks);
5596
5597 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
5598 0, sense_len, sizeof(*scsi_cmd), timeout);
5599 }
5600
5601 /*
5602 * The reserve and release unit commands differ only by their opcodes.
5603 */
5604 void
scsi_reserve_release_unit(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int third_party,int third_party_id,u_int8_t sense_len,u_int32_t timeout,int reserve)5605 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries,
5606 void (*cbfcnp)(struct cam_periph *, union ccb *),
5607 u_int8_t tag_action, int third_party,
5608 int third_party_id, u_int8_t sense_len,
5609 u_int32_t timeout, int reserve)
5610 {
5611 struct scsi_reserve_release_unit *scsi_cmd;
5612
5613 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes;
5614 bzero(scsi_cmd, sizeof(*scsi_cmd));
5615
5616 if (reserve)
5617 scsi_cmd->opcode = RESERVE_UNIT;
5618 else
5619 scsi_cmd->opcode = RELEASE_UNIT;
5620
5621 if (third_party) {
5622 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY;
5623 scsi_cmd->lun_thirdparty |=
5624 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK);
5625 }
5626
5627 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
5628 0, sense_len, sizeof(*scsi_cmd), timeout);
5629 }
5630
5631 void
scsi_erase(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immediate,int long_erase,u_int8_t sense_len,u_int32_t timeout)5632 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries,
5633 void (*cbfcnp)(struct cam_periph *, union ccb *),
5634 u_int8_t tag_action, int immediate, int long_erase,
5635 u_int8_t sense_len, u_int32_t timeout)
5636 {
5637 struct scsi_erase *scsi_cmd;
5638
5639 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes;
5640 bzero(scsi_cmd, sizeof(*scsi_cmd));
5641
5642 scsi_cmd->opcode = ERASE;
5643
5644 if (immediate)
5645 scsi_cmd->lun_imm_long |= SE_IMMED;
5646
5647 if (long_erase)
5648 scsi_cmd->lun_imm_long |= SE_LONG;
5649
5650 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL,
5651 0, sense_len, sizeof(*scsi_cmd), timeout);
5652 }
5653
5654 /*
5655 * Read Tape Position command.
5656 */
5657 void
scsi_read_position(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int hardsoft,struct scsi_tape_position_data * sbp,u_int8_t sense_len,u_int32_t timeout)5658 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries,
5659 void (*cbfcnp)(struct cam_periph *, union ccb *),
5660 u_int8_t tag_action, int hardsoft,
5661 struct scsi_tape_position_data *sbp,
5662 u_int8_t sense_len, u_int32_t timeout)
5663 {
5664 struct scsi_tape_read_position *scmd;
5665
5666 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action,
5667 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout);
5668 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
5669 bzero(scmd, sizeof(*scmd));
5670 scmd->opcode = READ_POSITION;
5671 scmd->byte1 = hardsoft;
5672 }
5673
5674 /*
5675 * Read Tape Position command.
5676 */
5677 void
scsi_read_position_10(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int service_action,u_int8_t * data_ptr,u_int32_t length,u_int32_t sense_len,u_int32_t timeout)5678 scsi_read_position_10(struct ccb_scsiio *csio, u_int32_t retries,
5679 void (*cbfcnp)(struct cam_periph *, union ccb *),
5680 u_int8_t tag_action, int service_action,
5681 u_int8_t *data_ptr, u_int32_t length,
5682 u_int32_t sense_len, u_int32_t timeout)
5683 {
5684 struct scsi_tape_read_position *scmd;
5685
5686 cam_fill_csio(csio,
5687 retries,
5688 cbfcnp,
5689 /*flags*/CAM_DIR_IN,
5690 tag_action,
5691 /*data_ptr*/data_ptr,
5692 /*dxfer_len*/length,
5693 sense_len,
5694 sizeof(*scmd),
5695 timeout);
5696
5697
5698 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes;
5699 bzero(scmd, sizeof(*scmd));
5700 scmd->opcode = READ_POSITION;
5701 scmd->byte1 = service_action;
5702 /*
5703 * The length is only currently set (as of SSC4r03) if the extended
5704 * form is specified. The other forms have fixed lengths.
5705 */
5706 if (service_action == SA_RPOS_EXTENDED_FORM)
5707 scsi_ulto2b(length, scmd->length);
5708 }
5709
5710 /*
5711 * Set Tape Position command.
5712 */
5713 void
scsi_set_position(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int hardsoft,u_int32_t blkno,u_int8_t sense_len,u_int32_t timeout)5714 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries,
5715 void (*cbfcnp)(struct cam_periph *, union ccb *),
5716 u_int8_t tag_action, int hardsoft, u_int32_t blkno,
5717 u_int8_t sense_len, u_int32_t timeout)
5718 {
5719 struct scsi_tape_locate *scmd;
5720
5721 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action,
5722 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout);
5723 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
5724 bzero(scmd, sizeof(*scmd));
5725 scmd->opcode = LOCATE;
5726 if (hardsoft)
5727 scmd->byte1 |= SA_SPOS_BT;
5728 scsi_ulto4b(blkno, scmd->blkaddr);
5729 }
5730
5731 /*
5732 * XXX KDM figure out how to make a compatibility function.
5733 */
5734 void
scsi_locate_10(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immed,int cp,int hard,int64_t partition,u_int32_t block_address,int sense_len,u_int32_t timeout)5735 scsi_locate_10(struct ccb_scsiio *csio, u_int32_t retries,
5736 void (*cbfcnp)(struct cam_periph *, union ccb *),
5737 u_int8_t tag_action, int immed, int cp, int hard,
5738 int64_t partition, u_int32_t block_address,
5739 int sense_len, u_int32_t timeout)
5740 {
5741 struct scsi_tape_locate *scmd;
5742
5743 cam_fill_csio(csio,
5744 retries,
5745 cbfcnp,
5746 CAM_DIR_NONE,
5747 tag_action,
5748 /*data_ptr*/ NULL,
5749 /*dxfer_len*/ 0,
5750 sense_len,
5751 sizeof(*scmd),
5752 timeout);
5753 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes;
5754 bzero(scmd, sizeof(*scmd));
5755 scmd->opcode = LOCATE;
5756 if (immed)
5757 scmd->byte1 |= SA_SPOS_IMMED;
5758 if (cp)
5759 scmd->byte1 |= SA_SPOS_CP;
5760 if (hard)
5761 scmd->byte1 |= SA_SPOS_BT;
5762 scsi_ulto4b(block_address, scmd->blkaddr);
5763 scmd->partition = partition;
5764 }
5765
5766 void
scsi_locate_16(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int immed,int cp,u_int8_t dest_type,int bam,int64_t partition,u_int64_t logical_id,int sense_len,u_int32_t timeout)5767 scsi_locate_16(struct ccb_scsiio *csio, u_int32_t retries,
5768 void (*cbfcnp)(struct cam_periph *, union ccb *),
5769 u_int8_t tag_action, int immed, int cp, u_int8_t dest_type,
5770 int bam, int64_t partition, u_int64_t logical_id,
5771 int sense_len, u_int32_t timeout)
5772 {
5773
5774 struct scsi_locate_16 *scsi_cmd;
5775
5776 cam_fill_csio(csio,
5777 retries,
5778 cbfcnp,
5779 /*flags*/CAM_DIR_NONE,
5780 tag_action,
5781 /*data_ptr*/NULL,
5782 /*dxfer_len*/0,
5783 sense_len,
5784 sizeof(*scsi_cmd),
5785 timeout);
5786
5787 scsi_cmd = (struct scsi_locate_16 *)&csio->cdb_io.cdb_bytes;
5788 bzero(scsi_cmd, sizeof(*scsi_cmd));
5789 scsi_cmd->opcode = LOCATE_16;
5790 if (immed)
5791 scsi_cmd->byte1 |= SA_LC_IMMEDIATE;
5792 if (cp)
5793 scsi_cmd->byte1 |= SA_LC_CP;
5794 scsi_cmd->byte1 |= (dest_type << SA_LC_DEST_TYPE_SHIFT);
5795
5796 scsi_cmd->byte2 |= bam;
5797 scsi_cmd->partition = partition;
5798 scsi_u64to8b(logical_id, scsi_cmd->logical_id);
5799 }
5800
5801 void
scsi_report_density_support(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int media,int medium_type,u_int8_t * data_ptr,u_int32_t length,u_int32_t sense_len,u_int32_t timeout)5802 scsi_report_density_support(struct ccb_scsiio *csio, u_int32_t retries,
5803 void (*cbfcnp)(struct cam_periph *, union ccb *),
5804 u_int8_t tag_action, int media, int medium_type,
5805 u_int8_t *data_ptr, u_int32_t length,
5806 u_int32_t sense_len, u_int32_t timeout)
5807 {
5808 struct scsi_report_density_support *scsi_cmd;
5809
5810 scsi_cmd =(struct scsi_report_density_support *)&csio->cdb_io.cdb_bytes;
5811 bzero(scsi_cmd, sizeof(*scsi_cmd));
5812
5813 scsi_cmd->opcode = REPORT_DENSITY_SUPPORT;
5814 if (media != 0)
5815 scsi_cmd->byte1 |= SRDS_MEDIA;
5816 if (medium_type != 0)
5817 scsi_cmd->byte1 |= SRDS_MEDIUM_TYPE;
5818
5819 scsi_ulto2b(length, scsi_cmd->length);
5820
5821 cam_fill_csio(csio,
5822 retries,
5823 cbfcnp,
5824 /*flags*/CAM_DIR_IN,
5825 tag_action,
5826 /*data_ptr*/data_ptr,
5827 /*dxfer_len*/length,
5828 sense_len,
5829 sizeof(*scsi_cmd),
5830 timeout);
5831 }
5832
5833 void
scsi_set_capacity(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int byte1,u_int32_t proportion,u_int32_t sense_len,u_int32_t timeout)5834 scsi_set_capacity(struct ccb_scsiio *csio, u_int32_t retries,
5835 void (*cbfcnp)(struct cam_periph *, union ccb *),
5836 u_int8_t tag_action, int byte1, u_int32_t proportion,
5837 u_int32_t sense_len, u_int32_t timeout)
5838 {
5839 struct scsi_set_capacity *scsi_cmd;
5840
5841 scsi_cmd = (struct scsi_set_capacity *)&csio->cdb_io.cdb_bytes;
5842 bzero(scsi_cmd, sizeof(*scsi_cmd));
5843
5844 scsi_cmd->opcode = SET_CAPACITY;
5845
5846 scsi_cmd->byte1 = byte1;
5847 scsi_ulto2b(proportion, scsi_cmd->cap_proportion);
5848
5849 cam_fill_csio(csio,
5850 retries,
5851 cbfcnp,
5852 /*flags*/CAM_DIR_NONE,
5853 tag_action,
5854 /*data_ptr*/NULL,
5855 /*dxfer_len*/0,
5856 sense_len,
5857 sizeof(*scsi_cmd),
5858 timeout);
5859 }
5860
5861 void
scsi_format_medium(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int byte1,int byte2,u_int8_t * data_ptr,u_int32_t dxfer_len,u_int32_t sense_len,u_int32_t timeout)5862 scsi_format_medium(struct ccb_scsiio *csio, u_int32_t retries,
5863 void (*cbfcnp)(struct cam_periph *, union ccb *),
5864 u_int8_t tag_action, int byte1, int byte2,
5865 u_int8_t *data_ptr, u_int32_t dxfer_len,
5866 u_int32_t sense_len, u_int32_t timeout)
5867 {
5868 struct scsi_format_medium *scsi_cmd;
5869
5870 scsi_cmd = (struct scsi_format_medium*)&csio->cdb_io.cdb_bytes;
5871 bzero(scsi_cmd, sizeof(*scsi_cmd));
5872
5873 scsi_cmd->opcode = FORMAT_MEDIUM;
5874
5875 scsi_cmd->byte1 = byte1;
5876 scsi_cmd->byte2 = byte2;
5877
5878 scsi_ulto2b(dxfer_len, scsi_cmd->length);
5879
5880 cam_fill_csio(csio,
5881 retries,
5882 cbfcnp,
5883 /*flags*/(dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
5884 tag_action,
5885 /*data_ptr*/ data_ptr,
5886 /*dxfer_len*/ dxfer_len,
5887 sense_len,
5888 sizeof(*scsi_cmd),
5889 timeout);
5890 }
5891
5892 void
scsi_allow_overwrite(struct ccb_scsiio * csio,u_int32_t retries,void (* cbfcnp)(struct cam_periph *,union ccb *),u_int8_t tag_action,int allow_overwrite,int partition,u_int64_t logical_id,u_int32_t sense_len,u_int32_t timeout)5893 scsi_allow_overwrite(struct ccb_scsiio *csio, u_int32_t retries,
5894 void (*cbfcnp)(struct cam_periph *, union ccb *),
5895 u_int8_t tag_action, int allow_overwrite, int partition,
5896 u_int64_t logical_id, u_int32_t sense_len, u_int32_t timeout)
5897 {
5898 struct scsi_allow_overwrite *scsi_cmd;
5899
5900 scsi_cmd = (struct scsi_allow_overwrite *)&csio->cdb_io.cdb_bytes;
5901 bzero(scsi_cmd, sizeof(*scsi_cmd));
5902
5903 scsi_cmd->opcode = ALLOW_OVERWRITE;
5904
5905 scsi_cmd->allow_overwrite = allow_overwrite;
5906 scsi_cmd->partition = partition;
5907 scsi_u64to8b(logical_id, scsi_cmd->logical_id);
5908
5909 cam_fill_csio(csio,
5910 retries,
5911 cbfcnp,
5912 CAM_DIR_NONE,
5913 tag_action,
5914 /*data_ptr*/ NULL,
5915 /*dxfer_len*/ 0,
5916 sense_len,
5917 sizeof(*scsi_cmd),
5918 timeout);
5919 }
5920