1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2012 DEY Storage Systems, Inc. All rights reserved.
24 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
25 * Use is subject to license terms.
26 * Copyright 2016 Toomas Soome <tsoome@me.com>
27 */
28
29 /*
30 * This module provides support for labeling operations for target
31 * drivers.
32 */
33
34 #include <sys/scsi/scsi.h>
35 #include <sys/sunddi.h>
36 #include <sys/dklabel.h>
37 #include <sys/dkio.h>
38 #include <sys/vtoc.h>
39 #include <sys/dktp/fdisk.h>
40 #include <sys/vtrace.h>
41 #include <sys/efi_partition.h>
42 #include <sys/cmlb.h>
43 #include <sys/cmlb_impl.h>
44 #if defined(__i386) || defined(__amd64)
45 #include <sys/fs/dv_node.h>
46 #endif
47 #include <sys/ddi_impldefs.h>
48
49 /*
50 * Driver minor node structure and data table
51 */
52 struct driver_minor_data {
53 char *name;
54 minor_t minor;
55 int type;
56 };
57
58 static struct driver_minor_data dk_minor_data[] = {
59 {"a", 0, S_IFBLK},
60 {"b", 1, S_IFBLK},
61 {"c", 2, S_IFBLK},
62 {"d", 3, S_IFBLK},
63 {"e", 4, S_IFBLK},
64 {"f", 5, S_IFBLK},
65 {"g", 6, S_IFBLK},
66 {"h", 7, S_IFBLK},
67 #if defined(_SUNOS_VTOC_16)
68 {"i", 8, S_IFBLK},
69 {"j", 9, S_IFBLK},
70 {"k", 10, S_IFBLK},
71 {"l", 11, S_IFBLK},
72 {"m", 12, S_IFBLK},
73 {"n", 13, S_IFBLK},
74 {"o", 14, S_IFBLK},
75 {"p", 15, S_IFBLK},
76 #endif /* defined(_SUNOS_VTOC_16) */
77 #if defined(_FIRMWARE_NEEDS_FDISK)
78 {"q", 16, S_IFBLK},
79 {"r", 17, S_IFBLK},
80 {"s", 18, S_IFBLK},
81 {"t", 19, S_IFBLK},
82 {"u", 20, S_IFBLK},
83 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
84 {"a,raw", 0, S_IFCHR},
85 {"b,raw", 1, S_IFCHR},
86 {"c,raw", 2, S_IFCHR},
87 {"d,raw", 3, S_IFCHR},
88 {"e,raw", 4, S_IFCHR},
89 {"f,raw", 5, S_IFCHR},
90 {"g,raw", 6, S_IFCHR},
91 {"h,raw", 7, S_IFCHR},
92 #if defined(_SUNOS_VTOC_16)
93 {"i,raw", 8, S_IFCHR},
94 {"j,raw", 9, S_IFCHR},
95 {"k,raw", 10, S_IFCHR},
96 {"l,raw", 11, S_IFCHR},
97 {"m,raw", 12, S_IFCHR},
98 {"n,raw", 13, S_IFCHR},
99 {"o,raw", 14, S_IFCHR},
100 {"p,raw", 15, S_IFCHR},
101 #endif /* defined(_SUNOS_VTOC_16) */
102 #if defined(_FIRMWARE_NEEDS_FDISK)
103 {"q,raw", 16, S_IFCHR},
104 {"r,raw", 17, S_IFCHR},
105 {"s,raw", 18, S_IFCHR},
106 {"t,raw", 19, S_IFCHR},
107 {"u,raw", 20, S_IFCHR},
108 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
109 {0}
110 };
111
112 #if defined(__i386) || defined(__amd64)
113 #if defined(_FIRMWARE_NEEDS_FDISK)
114 static struct driver_minor_data dk_ext_minor_data[] = {
115 {"p5", 21, S_IFBLK},
116 {"p6", 22, S_IFBLK},
117 {"p7", 23, S_IFBLK},
118 {"p8", 24, S_IFBLK},
119 {"p9", 25, S_IFBLK},
120 {"p10", 26, S_IFBLK},
121 {"p11", 27, S_IFBLK},
122 {"p12", 28, S_IFBLK},
123 {"p13", 29, S_IFBLK},
124 {"p14", 30, S_IFBLK},
125 {"p15", 31, S_IFBLK},
126 {"p16", 32, S_IFBLK},
127 {"p17", 33, S_IFBLK},
128 {"p18", 34, S_IFBLK},
129 {"p19", 35, S_IFBLK},
130 {"p20", 36, S_IFBLK},
131 {"p21", 37, S_IFBLK},
132 {"p22", 38, S_IFBLK},
133 {"p23", 39, S_IFBLK},
134 {"p24", 40, S_IFBLK},
135 {"p25", 41, S_IFBLK},
136 {"p26", 42, S_IFBLK},
137 {"p27", 43, S_IFBLK},
138 {"p28", 44, S_IFBLK},
139 {"p29", 45, S_IFBLK},
140 {"p30", 46, S_IFBLK},
141 {"p31", 47, S_IFBLK},
142 {"p32", 48, S_IFBLK},
143 {"p33", 49, S_IFBLK},
144 {"p34", 50, S_IFBLK},
145 {"p35", 51, S_IFBLK},
146 {"p36", 52, S_IFBLK},
147 {"p5,raw", 21, S_IFCHR},
148 {"p6,raw", 22, S_IFCHR},
149 {"p7,raw", 23, S_IFCHR},
150 {"p8,raw", 24, S_IFCHR},
151 {"p9,raw", 25, S_IFCHR},
152 {"p10,raw", 26, S_IFCHR},
153 {"p11,raw", 27, S_IFCHR},
154 {"p12,raw", 28, S_IFCHR},
155 {"p13,raw", 29, S_IFCHR},
156 {"p14,raw", 30, S_IFCHR},
157 {"p15,raw", 31, S_IFCHR},
158 {"p16,raw", 32, S_IFCHR},
159 {"p17,raw", 33, S_IFCHR},
160 {"p18,raw", 34, S_IFCHR},
161 {"p19,raw", 35, S_IFCHR},
162 {"p20,raw", 36, S_IFCHR},
163 {"p21,raw", 37, S_IFCHR},
164 {"p22,raw", 38, S_IFCHR},
165 {"p23,raw", 39, S_IFCHR},
166 {"p24,raw", 40, S_IFCHR},
167 {"p25,raw", 41, S_IFCHR},
168 {"p26,raw", 42, S_IFCHR},
169 {"p27,raw", 43, S_IFCHR},
170 {"p28,raw", 44, S_IFCHR},
171 {"p29,raw", 45, S_IFCHR},
172 {"p30,raw", 46, S_IFCHR},
173 {"p31,raw", 47, S_IFCHR},
174 {"p32,raw", 48, S_IFCHR},
175 {"p33,raw", 49, S_IFCHR},
176 {"p34,raw", 50, S_IFCHR},
177 {"p35,raw", 51, S_IFCHR},
178 {"p36,raw", 52, S_IFCHR},
179 {0}
180 };
181 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
182 #endif /* if defined(__i386) || defined(__amd64) */
183
184 static struct driver_minor_data dk_minor_data_efi[] = {
185 {"a", 0, S_IFBLK},
186 {"b", 1, S_IFBLK},
187 {"c", 2, S_IFBLK},
188 {"d", 3, S_IFBLK},
189 {"e", 4, S_IFBLK},
190 {"f", 5, S_IFBLK},
191 {"g", 6, S_IFBLK},
192 {"wd", 7, S_IFBLK},
193 #if defined(_SUNOS_VTOC_16)
194 {"i", 8, S_IFBLK},
195 {"j", 9, S_IFBLK},
196 {"k", 10, S_IFBLK},
197 {"l", 11, S_IFBLK},
198 {"m", 12, S_IFBLK},
199 {"n", 13, S_IFBLK},
200 {"o", 14, S_IFBLK},
201 {"p", 15, S_IFBLK},
202 #endif /* defined(_SUNOS_VTOC_16) */
203 #if defined(_FIRMWARE_NEEDS_FDISK)
204 {"q", 16, S_IFBLK},
205 {"r", 17, S_IFBLK},
206 {"s", 18, S_IFBLK},
207 {"t", 19, S_IFBLK},
208 {"u", 20, S_IFBLK},
209 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
210 {"a,raw", 0, S_IFCHR},
211 {"b,raw", 1, S_IFCHR},
212 {"c,raw", 2, S_IFCHR},
213 {"d,raw", 3, S_IFCHR},
214 {"e,raw", 4, S_IFCHR},
215 {"f,raw", 5, S_IFCHR},
216 {"g,raw", 6, S_IFCHR},
217 {"wd,raw", 7, S_IFCHR},
218 #if defined(_SUNOS_VTOC_16)
219 {"i,raw", 8, S_IFCHR},
220 {"j,raw", 9, S_IFCHR},
221 {"k,raw", 10, S_IFCHR},
222 {"l,raw", 11, S_IFCHR},
223 {"m,raw", 12, S_IFCHR},
224 {"n,raw", 13, S_IFCHR},
225 {"o,raw", 14, S_IFCHR},
226 {"p,raw", 15, S_IFCHR},
227 #endif /* defined(_SUNOS_VTOC_16) */
228 #if defined(_FIRMWARE_NEEDS_FDISK)
229 {"q,raw", 16, S_IFCHR},
230 {"r,raw", 17, S_IFCHR},
231 {"s,raw", 18, S_IFCHR},
232 {"t,raw", 19, S_IFCHR},
233 {"u,raw", 20, S_IFCHR},
234 #endif /* defined(_FIRMWARE_NEEDS_FDISK) */
235 {0}
236 };
237
238 /*
239 * Declare the dynamic properties implemented in prop_op(9E) implementation
240 * that we want to have show up in a di_init(3DEVINFO) device tree snapshot
241 * of drivers that call cmlb_attach().
242 */
243 static i_ddi_prop_dyn_t cmlb_prop_dyn[] = {
244 {"Nblocks", DDI_PROP_TYPE_INT64, S_IFBLK},
245 {"Size", DDI_PROP_TYPE_INT64, S_IFCHR},
246 {"device-nblocks", DDI_PROP_TYPE_INT64},
247 {"device-blksize", DDI_PROP_TYPE_INT},
248 {"device-solid-state", DDI_PROP_TYPE_INT},
249 {"device-rotational", DDI_PROP_TYPE_INT},
250 {NULL}
251 };
252
253 /*
254 * This implies an upper limit of 8192 GPT partitions
255 * in one transfer for GUID Partition Entry Array.
256 */
257 len_t cmlb_tg_max_efi_xfer = 1024 * 1024;
258
259 /*
260 * External kernel interfaces
261 */
262 extern struct mod_ops mod_miscops;
263
264 extern int ddi_create_internal_pathname(dev_info_t *dip, char *name,
265 int spec_type, minor_t minor_num);
266
267 /*
268 * Global buffer and mutex for debug logging
269 */
270 static char cmlb_log_buffer[1024];
271 static kmutex_t cmlb_log_mutex;
272
273
274 struct cmlb_lun *cmlb_debug_cl = NULL;
275 uint_t cmlb_level_mask = 0x0;
276
277 int cmlb_rot_delay = 4; /* default rotational delay */
278
279 static struct modlmisc modlmisc = {
280 &mod_miscops, /* Type of module */
281 "Common Labeling module"
282 };
283
284 static struct modlinkage modlinkage = {
285 MODREV_1, (void *)&modlmisc, NULL
286 };
287
288 /* Local function prototypes */
289 static dev_t cmlb_make_device(struct cmlb_lun *cl);
290 static int cmlb_validate_geometry(struct cmlb_lun *cl, boolean_t forcerevalid,
291 int flags, void *tg_cookie);
292 static void cmlb_resync_geom_caches(struct cmlb_lun *cl, diskaddr_t capacity,
293 void *tg_cookie);
294 static int cmlb_read_fdisk(struct cmlb_lun *cl, diskaddr_t capacity,
295 void *tg_cookie);
296 static void cmlb_swap_efi_gpt(efi_gpt_t *e);
297 static void cmlb_swap_efi_gpe(int nparts, efi_gpe_t *p);
298 static int cmlb_validate_efi(efi_gpt_t *labp);
299 static int cmlb_use_efi(struct cmlb_lun *cl, diskaddr_t capacity, int flags,
300 void *tg_cookie);
301 static void cmlb_build_default_label(struct cmlb_lun *cl, void *tg_cookie);
302 static int cmlb_uselabel(struct cmlb_lun *cl, struct dk_label *l, int flags);
303 #if defined(_SUNOS_VTOC_8)
304 static void cmlb_build_user_vtoc(struct cmlb_lun *cl, struct vtoc *user_vtoc);
305 #endif
306 static int cmlb_build_label_vtoc(struct cmlb_lun *cl, struct vtoc *user_vtoc);
307 static int cmlb_write_label(struct cmlb_lun *cl, void *tg_cookie);
308 static int cmlb_set_vtoc(struct cmlb_lun *cl, struct dk_label *dkl,
309 void *tg_cookie);
310 static void cmlb_clear_efi(struct cmlb_lun *cl, void *tg_cookie);
311 static void cmlb_clear_vtoc(struct cmlb_lun *cl, void *tg_cookie);
312 static void cmlb_setup_default_geometry(struct cmlb_lun *cl, void *tg_cookie);
313 static int cmlb_create_minor_nodes(struct cmlb_lun *cl);
314 static int cmlb_check_update_blockcount(struct cmlb_lun *cl, void *tg_cookie);
315 static boolean_t cmlb_check_efi_mbr(uchar_t *buf, boolean_t *is_mbr);
316
317 #if defined(__i386) || defined(__amd64)
318 static int cmlb_update_fdisk_and_vtoc(struct cmlb_lun *cl, void *tg_cookie);
319 #endif
320
321 #if defined(_FIRMWARE_NEEDS_FDISK)
322 static boolean_t cmlb_has_max_chs_vals(struct ipart *fdp);
323 #endif
324
325 #if defined(_SUNOS_VTOC_16)
326 static void cmlb_convert_geometry(struct cmlb_lun *cl, diskaddr_t capacity,
327 struct dk_geom *cl_g, void *tg_cookie);
328 #endif
329
330 static int cmlb_dkio_get_geometry(struct cmlb_lun *cl, caddr_t arg, int flag,
331 void *tg_cookie);
332 static int cmlb_dkio_set_geometry(struct cmlb_lun *cl, caddr_t arg, int flag);
333 static int cmlb_dkio_get_partition(struct cmlb_lun *cl, caddr_t arg, int flag,
334 void *tg_cookie);
335 static int cmlb_dkio_set_partition(struct cmlb_lun *cl, caddr_t arg, int flag);
336 static int cmlb_dkio_get_efi(struct cmlb_lun *cl, caddr_t arg, int flag,
337 void *tg_cookie);
338 static int cmlb_dkio_set_efi(struct cmlb_lun *cl, dev_t dev, caddr_t arg,
339 int flag, void *tg_cookie);
340 static int cmlb_dkio_get_vtoc(struct cmlb_lun *cl, caddr_t arg, int flag,
341 void *tg_cookie);
342 static int cmlb_dkio_get_extvtoc(struct cmlb_lun *cl, caddr_t arg, int flag,
343 void *tg_cookie);
344 static int cmlb_dkio_set_vtoc(struct cmlb_lun *cl, dev_t dev, caddr_t arg,
345 int flag, void *tg_cookie);
346 static int cmlb_dkio_set_extvtoc(struct cmlb_lun *cl, dev_t dev, caddr_t arg,
347 int flag, void *tg_cookie);
348 static int cmlb_dkio_get_mboot(struct cmlb_lun *cl, caddr_t arg, int flag,
349 void *tg_cookie);
350 static int cmlb_dkio_set_mboot(struct cmlb_lun *cl, caddr_t arg, int flag,
351 void *tg_cookie);
352 static int cmlb_dkio_partition(struct cmlb_lun *cl, caddr_t arg, int flag,
353 void *tg_cookie);
354
355 #if defined(__i386) || defined(__amd64)
356 static int cmlb_dkio_set_ext_part(struct cmlb_lun *cl, caddr_t arg, int flag,
357 void *tg_cookie);
358 static int cmlb_validate_ext_part(struct cmlb_lun *cl, int part, int epart,
359 uint32_t start, uint32_t size);
360 static int cmlb_is_linux_swap(struct cmlb_lun *cl, uint32_t part_start,
361 void *tg_cookie);
362 static int cmlb_dkio_get_virtgeom(struct cmlb_lun *cl, caddr_t arg, int flag);
363 static int cmlb_dkio_get_phygeom(struct cmlb_lun *cl, caddr_t arg, int flag,
364 void *tg_cookie);
365 static int cmlb_dkio_partinfo(struct cmlb_lun *cl, dev_t dev, caddr_t arg,
366 int flag);
367 static int cmlb_dkio_extpartinfo(struct cmlb_lun *cl, dev_t dev, caddr_t arg,
368 int flag);
369 #endif
370
371 static void cmlb_dbg(uint_t comp, struct cmlb_lun *cl, const char *fmt, ...);
372 static void cmlb_v_log(dev_info_t *dev, const char *label, uint_t level,
373 const char *fmt, va_list ap);
374 static void cmlb_log(dev_info_t *dev, const char *label, uint_t level,
375 const char *fmt, ...);
376
377 int
378 _init(void)
379 {
380 mutex_init(&cmlb_log_mutex, NULL, MUTEX_DRIVER, NULL);
381 return (mod_install(&modlinkage));
382 }
383
384 int
385 _info(struct modinfo *modinfop)
386 {
387 return (mod_info(&modlinkage, modinfop));
388 }
389
390 int
391 _fini(void)
392 {
393 int err;
394
395 if ((err = mod_remove(&modlinkage)) != 0) {
396 return (err);
397 }
398
399 mutex_destroy(&cmlb_log_mutex);
400 return (err);
401 }
402
403 /*
404 * cmlb_dbg is used for debugging to log additional info
405 * Level of output is controlled via cmlb_level_mask setting.
406 */
407 static void
408 cmlb_dbg(uint_t comp, struct cmlb_lun *cl, const char *fmt, ...)
409 {
410 va_list ap;
411 dev_info_t *dev;
412 uint_t level_mask = 0;
413
414 ASSERT(cl != NULL);
415 dev = CMLB_DEVINFO(cl);
416 ASSERT(dev != NULL);
417 /*
418 * Filter messages based on the global component and level masks,
419 * also print if cl matches the value of cmlb_debug_cl, or if
420 * cmlb_debug_cl is set to NULL.
421 */
422 if (comp & CMLB_TRACE)
423 level_mask |= CMLB_LOGMASK_TRACE;
424
425 if (comp & CMLB_INFO)
426 level_mask |= CMLB_LOGMASK_INFO;
427
428 if (comp & CMLB_ERROR)
429 level_mask |= CMLB_LOGMASK_ERROR;
430
431 if ((cmlb_level_mask & level_mask) &&
432 ((cmlb_debug_cl == NULL) || (cmlb_debug_cl == cl))) {
433 va_start(ap, fmt);
434 cmlb_v_log(dev, CMLB_LABEL(cl), CE_CONT, fmt, ap);
435 va_end(ap);
436 }
437 }
438
439 /*
440 * cmlb_log is basically a duplicate of scsi_log. It is redefined here
441 * so that this module does not depend on scsi module.
442 */
443 static void
444 cmlb_log(dev_info_t *dev, const char *label, uint_t level, const char *fmt, ...)
445 {
446 va_list ap;
447
448 va_start(ap, fmt);
449 cmlb_v_log(dev, label, level, fmt, ap);
450 va_end(ap);
451 }
452
453 static void
454 cmlb_v_log(dev_info_t *dev, const char *label, uint_t level, const char *fmt,
455 va_list ap)
456 {
457 static char name[256];
458 int log_only = 0;
459 int boot_only = 0;
460 int console_only = 0;
461
462 mutex_enter(&cmlb_log_mutex);
463
464 if (dev) {
465 if (level == CE_PANIC || level == CE_WARN ||
466 level == CE_NOTE) {
467 (void) sprintf(name, "%s (%s%d):\n",
468 ddi_pathname(dev, cmlb_log_buffer),
469 label, ddi_get_instance(dev));
470 } else {
471 name[0] = '\0';
472 }
473 } else {
474 (void) sprintf(name, "%s:", label);
475 }
476
477 (void) vsprintf(cmlb_log_buffer, fmt, ap);
478
479 switch (cmlb_log_buffer[0]) {
480 case '!':
481 log_only = 1;
482 break;
483 case '?':
484 boot_only = 1;
485 break;
486 case '^':
487 console_only = 1;
488 break;
489 }
490
491 switch (level) {
492 case CE_NOTE:
493 level = CE_CONT;
494 /* FALLTHROUGH */
495 case CE_CONT:
496 case CE_WARN:
497 case CE_PANIC:
498 if (boot_only) {
499 cmn_err(level, "?%s\t%s", name, &cmlb_log_buffer[1]);
500 } else if (console_only) {
501 cmn_err(level, "^%s\t%s", name, &cmlb_log_buffer[1]);
502 } else if (log_only) {
503 cmn_err(level, "!%s\t%s", name, &cmlb_log_buffer[1]);
504 } else {
505 cmn_err(level, "%s\t%s", name, cmlb_log_buffer);
506 }
507 break;
508 case CE_IGNORE:
509 break;
510 default:
511 cmn_err(CE_CONT, "^DEBUG: %s\t%s", name, cmlb_log_buffer);
512 break;
513 }
514 mutex_exit(&cmlb_log_mutex);
515 }
516
517
518 /*
519 * cmlb_alloc_handle:
520 *
521 * Allocates a handle.
522 *
523 * Arguments:
524 * cmlbhandlep pointer to handle
525 *
526 * Notes:
527 * Allocates a handle and stores the allocated handle in the area
528 * pointed to by cmlbhandlep
529 *
530 * Context:
531 * Kernel thread only (can sleep).
532 */
533 void
534 cmlb_alloc_handle(cmlb_handle_t *cmlbhandlep)
535 {
536 struct cmlb_lun *cl;
537
538 cl = kmem_zalloc(sizeof (struct cmlb_lun), KM_SLEEP);
539 ASSERT(cmlbhandlep != NULL);
540
541 cl->cl_state = CMLB_INITED;
542 cl->cl_def_labeltype = CMLB_LABEL_UNDEF;
543 mutex_init(CMLB_MUTEX(cl), NULL, MUTEX_DRIVER, NULL);
544
545 *cmlbhandlep = (cmlb_handle_t)(cl);
546 }
547
548 /*
549 * cmlb_free_handle
550 *
551 * Frees handle.
552 *
553 * Arguments:
554 * cmlbhandlep pointer to handle
555 */
556 void
557 cmlb_free_handle(cmlb_handle_t *cmlbhandlep)
558 {
559 struct cmlb_lun *cl;
560
561 cl = (struct cmlb_lun *)*cmlbhandlep;
562 if (cl != NULL) {
563 mutex_destroy(CMLB_MUTEX(cl));
564 kmem_free(cl, sizeof (struct cmlb_lun));
565 }
566
567 }
568
569 /*
570 * cmlb_attach:
571 *
572 * Attach handle to device, create minor nodes for device.
573 *
574 * Arguments:
575 * devi pointer to device's dev_info structure.
576 * tgopsp pointer to array of functions cmlb can use to callback
577 * to target driver.
578 *
579 * device_type Peripheral device type as defined in
580 * scsi/generic/inquiry.h
581 *
582 * is_removable whether or not device is removable.
583 *
584 * is_hotpluggable whether or not device is hotpluggable.
585 *
586 * node_type minor node type (as used by ddi_create_minor_node)
587 *
588 * alter_behavior
589 * bit flags:
590 *
591 * CMLB_CREATE_ALTSLICE_VTOC_16_DTYPE_DIRECT: create
592 * an alternate slice for the default label, if
593 * device type is DTYPE_DIRECT an architectures default
594 * label type is VTOC16.
595 * Otherwise alternate slice will no be created.
596 *
597 *
598 * CMLB_FAKE_GEOM_LABEL_IOCTLS_VTOC8: report a default
599 * geometry and label for DKIOCGGEOM and DKIOCGVTOC
600 * on architecture with VTOC8 label types.
601 *
602 * CMLB_OFF_BY_ONE: do the workaround for legacy off-by-
603 * one bug in obtaining capacity (in sd):
604 * SCSI READ_CAPACITY command returns the LBA number of the
605 * last logical block, but sd once treated this number as
606 * disks' capacity on x86 platform. And LBAs are addressed
607 * based 0. So the last block was lost on x86 platform.
608 *
609 * Now, we remove this workaround. In order for present sd
610 * driver to work with disks which are labeled/partitioned
611 * via previous sd, we add workaround as follows:
612 *
613 * 1) Locate backup EFI label: cmlb searches the next to
614 * last
615 * block for backup EFI label. If fails, it will
616 * turn to the last block for backup EFI label;
617 *
618 * 2) Clear backup EFI label: cmlb first search the last
619 * block for backup EFI label, and will search the
620 * next to last block only if failed for the last
621 * block.
622 *
623 * 3) Calculate geometry:refer to cmlb_convert_geometry()
624 * If capacity increasing by 1 causes disks' capacity
625 * to cross over the limits in geometry calculation,
626 * geometry info will change. This will raise an issue:
627 * In case that primary VTOC label is destroyed, format
628 * commandline can restore it via backup VTOC labels.
629 * And format locates backup VTOC labels by use of
630 * geometry. So changing geometry will
631 * prevent format from finding backup VTOC labels. To
632 * eliminate this side effect for compatibility,
633 * sd uses (capacity -1) to calculate geometry;
634 *
635 * 4) 1TB disks: some important data structures use
636 * 32-bit signed long/int (for example, daddr_t),
637 * so that sd doesn't support a disk with capacity
638 * larger than 1TB on 32-bit platform. However,
639 * for exactly 1TB disk, it was treated as (1T - 512)B
640 * in the past, and could have valid Solaris
641 * partitions. To workaround this, if an exactly 1TB
642 * disk has Solaris fdisk partition, it will be allowed
643 * to work with sd.
644 *
645 *
646 *
647 * CMLB_FAKE_LABEL_ONE_PARTITION: create s0 and s2 covering
648 * the entire disk, if there is no valid partition info.
649 * If there is a valid Solaris partition, s0 and s2 will
650 * only cover the entire Solaris partition.
651 *
652 * CMLB_CREATE_P0_MINOR_NODE: create p0 node covering
653 * the entire disk. Used by lofi to ensure presence of
654 * whole disk device node in case of LOFI_MAP_FILE ioctl.
655 *
656 * cmlbhandle cmlb handle associated with device
657 *
658 * tg_cookie cookie from target driver to be passed back to target
659 * driver when we call back to it through tg_ops.
660 *
661 * Notes:
662 * Assumes a default label based on capacity for non-removable devices.
663 * If capacity > 1TB, EFI is assumed otherwise VTOC (default VTOC
664 * for the architecture).
665 *
666 * For removable devices, default label type is assumed to be VTOC
667 * type. Create minor nodes based on a default label type.
668 * Label on the media is not validated.
669 * minor number consists of:
670 * if _SUNOS_VTOC_8 is defined
671 * lowest 3 bits is taken as partition number
672 * the rest is instance number
673 * if _SUNOS_VTOC_16 is defined
674 * lowest 6 bits is taken as partition number
675 * the rest is instance number
676 *
677 *
678 * Return values:
679 * 0 Success
680 * ENXIO creating minor nodes failed.
681 * EINVAL invalid arg, unsupported tg_ops version
682 */
683 int
684 cmlb_attach(dev_info_t *devi, cmlb_tg_ops_t *tgopsp, int device_type,
685 boolean_t is_removable, boolean_t is_hotpluggable, char *node_type,
686 int alter_behavior, cmlb_handle_t cmlbhandle, void *tg_cookie)
687 {
688
689 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
690 diskaddr_t cap;
691 int status;
692
693 ASSERT(VALID_BOOLEAN(is_removable));
694 ASSERT(VALID_BOOLEAN(is_hotpluggable));
695
696 if (tgopsp->tg_version < TG_DK_OPS_VERSION_1)
697 return (EINVAL);
698
699 mutex_enter(CMLB_MUTEX(cl));
700
701 CMLB_DEVINFO(cl) = devi;
702 cl->cmlb_tg_ops = tgopsp;
703 cl->cl_device_type = device_type;
704 cl->cl_is_removable = is_removable;
705 cl->cl_is_hotpluggable = is_hotpluggable;
706 cl->cl_node_type = node_type;
707 cl->cl_sys_blocksize = DEV_BSIZE;
708 cl->cl_f_geometry_is_valid = B_FALSE;
709 cl->cl_def_labeltype = CMLB_LABEL_VTOC;
710 cl->cl_alter_behavior = alter_behavior;
711 cl->cl_reserved = -1;
712 cl->cl_msglog_flag |= CMLB_ALLOW_2TB_WARN;
713 #if defined(__i386) || defined(__amd64)
714 cl->cl_logical_drive_count = 0;
715 #endif
716
717 if (!is_removable) {
718 mutex_exit(CMLB_MUTEX(cl));
719 status = DK_TG_GETCAP(cl, &cap, tg_cookie);
720 mutex_enter(CMLB_MUTEX(cl));
721 if (status == 0 && cap > CMLB_EXTVTOC_LIMIT) {
722 /* set default EFI if > 2TB */
723 cl->cl_def_labeltype = CMLB_LABEL_EFI;
724 }
725 }
726
727 /* create minor nodes based on default label type */
728 cl->cl_last_labeltype = CMLB_LABEL_UNDEF;
729 cl->cl_cur_labeltype = CMLB_LABEL_UNDEF;
730
731 if (cmlb_create_minor_nodes(cl) != 0) {
732 mutex_exit(CMLB_MUTEX(cl));
733 return (ENXIO);
734 }
735
736 /* Define the dynamic properties for devinfo spapshots. */
737 i_ddi_prop_dyn_driver_set(CMLB_DEVINFO(cl), cmlb_prop_dyn);
738
739 cl->cl_state = CMLB_ATTACHED;
740
741 mutex_exit(CMLB_MUTEX(cl));
742 return (0);
743 }
744
745 /*
746 * cmlb_detach:
747 *
748 * Invalidate in-core labeling data and remove all minor nodes for
749 * the device associate with handle.
750 *
751 * Arguments:
752 * cmlbhandle cmlb handle associated with device.
753 *
754 * tg_cookie cookie from target driver to be passed back to target
755 * driver when we call back to it through tg_ops.
756 *
757 */
758 /*ARGSUSED1*/
759 void
760 cmlb_detach(cmlb_handle_t cmlbhandle, void *tg_cookie)
761 {
762 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
763
764 mutex_enter(CMLB_MUTEX(cl));
765 cl->cl_def_labeltype = CMLB_LABEL_UNDEF;
766 cl->cl_f_geometry_is_valid = B_FALSE;
767 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
768 i_ddi_prop_dyn_driver_set(CMLB_DEVINFO(cl), NULL);
769 cl->cl_state = CMLB_INITED;
770 mutex_exit(CMLB_MUTEX(cl));
771 }
772
773 /*
774 * cmlb_validate:
775 *
776 * Validates label.
777 *
778 * Arguments
779 * cmlbhandle cmlb handle associated with device.
780 *
781 * flags operation flags. used for verbosity control
782 *
783 * tg_cookie cookie from target driver to be passed back to target
784 * driver when we call back to it through tg_ops.
785 *
786 *
787 * Notes:
788 * If new label type is different from the current, adjust minor nodes
789 * accordingly.
790 *
791 * Return values:
792 * 0 success
793 * Note: having fdisk but no solaris partition is assumed
794 * success.
795 *
796 * ENOMEM memory allocation failed
797 * EIO i/o errors during read or get capacity
798 * EACCESS reservation conflicts
799 * EINVAL label was corrupt, or no default label was assumed
800 * ENXIO invalid handle
801 */
802 int
803 cmlb_validate(cmlb_handle_t cmlbhandle, int flags, void *tg_cookie)
804 {
805 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
806 int rval;
807 int ret = 0;
808
809 /*
810 * Temp work-around checking cl for NULL since there is a bug
811 * in sd_detach calling this routine from taskq_dispatch
812 * inited function.
813 */
814 if (cl == NULL)
815 return (ENXIO);
816
817 mutex_enter(CMLB_MUTEX(cl));
818 if (cl->cl_state < CMLB_ATTACHED) {
819 mutex_exit(CMLB_MUTEX(cl));
820 return (ENXIO);
821 }
822
823 rval = cmlb_validate_geometry((struct cmlb_lun *)cmlbhandle, B_TRUE,
824 flags, tg_cookie);
825
826 if (rval == ENOTSUP) {
827 if (cl->cl_f_geometry_is_valid) {
828 cl->cl_cur_labeltype = CMLB_LABEL_EFI;
829 ret = 0;
830 } else {
831 ret = EINVAL;
832 }
833 } else {
834 ret = rval;
835 if (ret == 0)
836 cl->cl_cur_labeltype = CMLB_LABEL_VTOC;
837 }
838
839 if (ret == 0)
840 (void) cmlb_create_minor_nodes(cl);
841
842 mutex_exit(CMLB_MUTEX(cl));
843 return (ret);
844 }
845
846 /*
847 * cmlb_invalidate:
848 * Invalidate in core label data
849 *
850 * Arguments:
851 * cmlbhandle cmlb handle associated with device.
852 * tg_cookie cookie from target driver to be passed back to target
853 * driver when we call back to it through tg_ops.
854 */
855 /*ARGSUSED1*/
856 void
857 cmlb_invalidate(cmlb_handle_t cmlbhandle, void *tg_cookie)
858 {
859 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
860
861 if (cl == NULL)
862 return;
863
864 mutex_enter(CMLB_MUTEX(cl));
865 cl->cl_f_geometry_is_valid = B_FALSE;
866 mutex_exit(CMLB_MUTEX(cl));
867 }
868
869 /*
870 * cmlb_is_valid
871 * Get status on whether the incore label/geom data is valid
872 *
873 * Arguments:
874 * cmlbhandle cmlb handle associated with device.
875 *
876 * Return values:
877 * B_TRUE if incore label/geom data is valid.
878 * B_FALSE otherwise.
879 *
880 */
881
882
883 boolean_t
884 cmlb_is_valid(cmlb_handle_t cmlbhandle)
885 {
886 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
887
888 if (cmlbhandle == NULL)
889 return (B_FALSE);
890
891 return (cl->cl_f_geometry_is_valid);
892
893 }
894
895
896
897 /*
898 * cmlb_close:
899 *
900 * Close the device, revert to a default label minor node for the device,
901 * if it is removable.
902 *
903 * Arguments:
904 * cmlbhandle cmlb handle associated with device.
905 *
906 * tg_cookie cookie from target driver to be passed back to target
907 * driver when we call back to it through tg_ops.
908 * Return values:
909 * 0 Success
910 * ENXIO Re-creating minor node failed.
911 */
912 /*ARGSUSED1*/
913 int
914 cmlb_close(cmlb_handle_t cmlbhandle, void *tg_cookie)
915 {
916 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
917
918 mutex_enter(CMLB_MUTEX(cl));
919 cl->cl_f_geometry_is_valid = B_FALSE;
920
921 /* revert to default minor node for this device */
922 if (ISREMOVABLE(cl)) {
923 cl->cl_cur_labeltype = CMLB_LABEL_UNDEF;
924 (void) cmlb_create_minor_nodes(cl);
925 }
926
927 mutex_exit(CMLB_MUTEX(cl));
928 return (0);
929 }
930
931 /*
932 * cmlb_get_devid_block:
933 * get the block number where device id is stored.
934 *
935 * Arguments:
936 * cmlbhandle cmlb handle associated with device.
937 * devidblockp pointer to block number.
938 * tg_cookie cookie from target driver to be passed back to target
939 * driver when we call back to it through tg_ops.
940 *
941 * Notes:
942 * It stores the block number of device id in the area pointed to
943 * by devidblockp.
944 * with the block number of device id.
945 *
946 * Return values:
947 * 0 success
948 * EINVAL device id does not apply to current label type.
949 */
950 /*ARGSUSED2*/
951 int
952 cmlb_get_devid_block(cmlb_handle_t cmlbhandle, diskaddr_t *devidblockp,
953 void *tg_cookie)
954 {
955 daddr_t spc, blk, head, cyl;
956 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
957
958 mutex_enter(CMLB_MUTEX(cl));
959 if (cl->cl_state < CMLB_ATTACHED) {
960 mutex_exit(CMLB_MUTEX(cl));
961 return (EINVAL);
962 }
963
964 if ((!cl->cl_f_geometry_is_valid) ||
965 (cl->cl_solaris_size < DK_LABEL_LOC)) {
966 mutex_exit(CMLB_MUTEX(cl));
967 return (EINVAL);
968 }
969
970 if (cl->cl_cur_labeltype == CMLB_LABEL_EFI) {
971 if (cl->cl_reserved != -1) {
972 blk = cl->cl_map[cl->cl_reserved].dkl_cylno;
973 } else {
974 mutex_exit(CMLB_MUTEX(cl));
975 return (EINVAL);
976 }
977 } else {
978 /* if the disk is unlabeled, don't write a devid to it */
979 if (cl->cl_label_from_media != CMLB_LABEL_VTOC) {
980 mutex_exit(CMLB_MUTEX(cl));
981 return (EINVAL);
982 }
983
984 /* this geometry doesn't allow us to write a devid */
985 if (cl->cl_g.dkg_acyl < 2) {
986 mutex_exit(CMLB_MUTEX(cl));
987 return (EINVAL);
988 }
989
990 /*
991 * Subtract 2 guarantees that the next to last cylinder
992 * is used
993 */
994 cyl = cl->cl_g.dkg_ncyl + cl->cl_g.dkg_acyl - 2;
995 spc = cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect;
996 head = cl->cl_g.dkg_nhead - 1;
997 blk = cl->cl_solaris_offset +
998 (cyl * (spc - cl->cl_g.dkg_apc)) +
999 (head * cl->cl_g.dkg_nsect) + 1;
1000 }
1001
1002 *devidblockp = blk;
1003 mutex_exit(CMLB_MUTEX(cl));
1004 return (0);
1005 }
1006
1007 /*
1008 * cmlb_partinfo:
1009 * Get partition info for specified partition number.
1010 *
1011 * Arguments:
1012 * cmlbhandle cmlb handle associated with device.
1013 * part partition number
1014 * nblocksp pointer to number of blocks
1015 * startblockp pointer to starting block
1016 * partnamep pointer to name of partition
1017 * tagp pointer to tag info
1018 * tg_cookie cookie from target driver to be passed back to target
1019 * driver when we call back to it through tg_ops.
1020 *
1021 *
1022 * Notes:
1023 * If in-core label is not valid, this functions tries to revalidate
1024 * the label. If label is valid, it stores the total number of blocks
1025 * in this partition in the area pointed to by nblocksp, starting
1026 * block number in area pointed to by startblockp, pointer to partition
1027 * name in area pointed to by partnamep, and tag value in area
1028 * pointed by tagp.
1029 * For EFI labels, tag value will be set to 0.
1030 *
1031 * For all nblocksp, startblockp and partnamep, tagp, a value of NULL
1032 * indicates the corresponding info is not requested.
1033 *
1034 *
1035 * Return values:
1036 * 0 success
1037 * EINVAL no valid label or requested partition number is invalid.
1038 *
1039 */
1040 int
1041 cmlb_partinfo(cmlb_handle_t cmlbhandle, int part, diskaddr_t *nblocksp,
1042 diskaddr_t *startblockp, char **partnamep, uint16_t *tagp, void *tg_cookie)
1043 {
1044
1045 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
1046 int rval;
1047 #if defined(__i386) || defined(__amd64)
1048 int ext_part;
1049 #endif
1050
1051 ASSERT(cl != NULL);
1052 mutex_enter(CMLB_MUTEX(cl));
1053 if (cl->cl_state < CMLB_ATTACHED) {
1054 mutex_exit(CMLB_MUTEX(cl));
1055 return (EINVAL);
1056 }
1057
1058 if (part < 0 || part >= MAXPART) {
1059 rval = EINVAL;
1060 } else {
1061 if (!cl->cl_f_geometry_is_valid)
1062 (void) cmlb_validate_geometry((struct cmlb_lun *)cl,
1063 B_FALSE, 0, tg_cookie);
1064
1065 if (((!cl->cl_f_geometry_is_valid) ||
1066 (part < NDKMAP && cl->cl_solaris_size == 0)) &&
1067 (part != P0_RAW_DISK)) {
1068 rval = EINVAL;
1069 } else {
1070 if (startblockp != NULL)
1071 *startblockp = (diskaddr_t)cl->cl_offset[part];
1072
1073 if (nblocksp != NULL)
1074 *nblocksp = (diskaddr_t)
1075 cl->cl_map[part].dkl_nblk;
1076
1077 if (tagp != NULL)
1078 *tagp =
1079 ((cl->cl_cur_labeltype == CMLB_LABEL_EFI) ||
1080 (part >= NDKMAP)) ? V_UNASSIGNED :
1081 cl->cl_vtoc.v_part[part].p_tag;
1082 rval = 0;
1083 }
1084
1085 /* consistent with behavior of sd for getting minor name */
1086 if (partnamep != NULL) {
1087 #if defined(__i386) || defined(__amd64)
1088 #if defined(_FIRMWARE_NEEDS_FDISK)
1089 if (part > FDISK_P4) {
1090 ext_part = part-FDISK_P4-1;
1091 *partnamep = dk_ext_minor_data[ext_part].name;
1092 } else
1093 #endif
1094 #endif
1095 *partnamep = dk_minor_data[part].name;
1096 }
1097
1098 }
1099
1100 mutex_exit(CMLB_MUTEX(cl));
1101 return (rval);
1102 }
1103
1104 /*
1105 * cmlb_efi_label_capacity:
1106 * Get capacity stored in EFI disk label.
1107 *
1108 * Arguments:
1109 * cmlbhandle cmlb handle associated with device.
1110 * capacity pointer to capacity stored in EFI disk label.
1111 * tg_cookie cookie from target driver to be passed back to target
1112 * driver when we call back to it through tg_ops.
1113 *
1114 *
1115 * Notes:
1116 * If in-core label is not valid, this functions tries to revalidate
1117 * the label. If label is valid and is an EFI label, it stores the capacity
1118 * in disk label in the area pointed to by capacity.
1119 *
1120 *
1121 * Return values:
1122 * 0 success
1123 * EINVAL no valid EFI label or capacity is NULL.
1124 *
1125 */
1126 int
1127 cmlb_efi_label_capacity(cmlb_handle_t cmlbhandle, diskaddr_t *capacity,
1128 void *tg_cookie)
1129 {
1130 struct cmlb_lun *cl = (struct cmlb_lun *)cmlbhandle;
1131 int rval;
1132
1133 ASSERT(cl != NULL);
1134 mutex_enter(CMLB_MUTEX(cl));
1135 if (cl->cl_state < CMLB_ATTACHED) {
1136 mutex_exit(CMLB_MUTEX(cl));
1137 return (EINVAL);
1138 }
1139
1140 if (!cl->cl_f_geometry_is_valid)
1141 (void) cmlb_validate_geometry((struct cmlb_lun *)cl, B_FALSE,
1142 0, tg_cookie);
1143
1144 if ((!cl->cl_f_geometry_is_valid) || (capacity == NULL) ||
1145 (cl->cl_cur_labeltype != CMLB_LABEL_EFI)) {
1146 rval = EINVAL;
1147 } else {
1148 *capacity = (diskaddr_t)cl->cl_map[WD_NODE].dkl_nblk;
1149 rval = 0;
1150 }
1151
1152 mutex_exit(CMLB_MUTEX(cl));
1153 return (rval);
1154 }
1155
1156 /* Caller should make sure Test Unit Ready succeeds before calling this. */
1157 /*ARGSUSED*/
1158 int
1159 cmlb_ioctl(cmlb_handle_t cmlbhandle, dev_t dev, int cmd, intptr_t arg,
1160 int flag, cred_t *cred_p, int *rval_p, void *tg_cookie)
1161 {
1162
1163 int err;
1164 struct cmlb_lun *cl;
1165
1166 cl = (struct cmlb_lun *)cmlbhandle;
1167
1168 ASSERT(cl != NULL);
1169
1170 mutex_enter(CMLB_MUTEX(cl));
1171 if (cl->cl_state < CMLB_ATTACHED) {
1172 mutex_exit(CMLB_MUTEX(cl));
1173 return (EIO);
1174 }
1175
1176 switch (cmd) {
1177 case DKIOCSEXTVTOC:
1178 case DKIOCSGEOM:
1179 case DKIOCSETEFI:
1180 case DKIOCSMBOOT:
1181 #if defined(__i386) || defined(__amd64)
1182 case DKIOCSETEXTPART:
1183 #endif
1184 break;
1185 case DKIOCSVTOC:
1186 #if defined(__i386) || defined(__amd64)
1187 case DKIOCPARTINFO:
1188 #endif
1189 if (cl->cl_blockcount > CMLB_OLDVTOC_LIMIT) {
1190 mutex_exit(CMLB_MUTEX(cl));
1191 return (EOVERFLOW);
1192 }
1193 break;
1194 default:
1195 (void) cmlb_validate_geometry(cl, 1, CMLB_SILENT,
1196 tg_cookie);
1197
1198 switch (cmd) {
1199 case DKIOCGVTOC:
1200 case DKIOCGAPART:
1201 case DKIOCSAPART:
1202
1203 if (cl->cl_label_from_media == CMLB_LABEL_EFI) {
1204 /* GPT label on disk */
1205 mutex_exit(CMLB_MUTEX(cl));
1206 return (ENOTSUP);
1207 } else if
1208 (cl->cl_blockcount > CMLB_OLDVTOC_LIMIT) {
1209 mutex_exit(CMLB_MUTEX(cl));
1210 return (EOVERFLOW);
1211 }
1212 break;
1213
1214 case DKIOCGGEOM:
1215 if (cl->cl_label_from_media == CMLB_LABEL_EFI) {
1216 /* GPT label on disk */
1217 mutex_exit(CMLB_MUTEX(cl));
1218 return (ENOTSUP);
1219 }
1220 break;
1221 default:
1222 break;
1223 }
1224 }
1225
1226 mutex_exit(CMLB_MUTEX(cl));
1227
1228 switch (cmd) {
1229 case DKIOCGGEOM:
1230 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGGEOM\n");
1231 err = cmlb_dkio_get_geometry(cl, (caddr_t)arg, flag, tg_cookie);
1232 break;
1233
1234 case DKIOCSGEOM:
1235 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSGEOM\n");
1236 err = cmlb_dkio_set_geometry(cl, (caddr_t)arg, flag);
1237 break;
1238
1239 case DKIOCGAPART:
1240 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGAPART\n");
1241 err = cmlb_dkio_get_partition(cl, (caddr_t)arg,
1242 flag, tg_cookie);
1243 break;
1244
1245 case DKIOCSAPART:
1246 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSAPART\n");
1247 err = cmlb_dkio_set_partition(cl, (caddr_t)arg, flag);
1248 break;
1249
1250 case DKIOCGVTOC:
1251 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGVTOC\n");
1252 err = cmlb_dkio_get_vtoc(cl, (caddr_t)arg, flag, tg_cookie);
1253 break;
1254
1255 case DKIOCGEXTVTOC:
1256 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGVTOC\n");
1257 err = cmlb_dkio_get_extvtoc(cl, (caddr_t)arg, flag, tg_cookie);
1258 break;
1259
1260 case DKIOCGETEFI:
1261 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGETEFI\n");
1262 err = cmlb_dkio_get_efi(cl, (caddr_t)arg, flag, tg_cookie);
1263 break;
1264
1265 case DKIOCPARTITION:
1266 cmlb_dbg(CMLB_TRACE, cl, "DKIOCPARTITION\n");
1267 err = cmlb_dkio_partition(cl, (caddr_t)arg, flag, tg_cookie);
1268 break;
1269
1270 case DKIOCSVTOC:
1271 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSVTOC\n");
1272 err = cmlb_dkio_set_vtoc(cl, dev, (caddr_t)arg, flag,
1273 tg_cookie);
1274 break;
1275
1276 case DKIOCSEXTVTOC:
1277 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSVTOC\n");
1278 err = cmlb_dkio_set_extvtoc(cl, dev, (caddr_t)arg, flag,
1279 tg_cookie);
1280 break;
1281
1282 case DKIOCSETEFI:
1283 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSETEFI\n");
1284 err = cmlb_dkio_set_efi(cl, dev, (caddr_t)arg, flag, tg_cookie);
1285 break;
1286
1287 case DKIOCGMBOOT:
1288 cmlb_dbg(CMLB_TRACE, cl, "DKIOCGMBOOT\n");
1289 err = cmlb_dkio_get_mboot(cl, (caddr_t)arg, flag, tg_cookie);
1290 break;
1291
1292 case DKIOCSMBOOT:
1293 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSMBOOT\n");
1294 err = cmlb_dkio_set_mboot(cl, (caddr_t)arg, flag, tg_cookie);
1295 break;
1296 case DKIOCG_PHYGEOM:
1297 cmlb_dbg(CMLB_TRACE, cl, "DKIOCG_PHYGEOM\n");
1298 #if defined(__i386) || defined(__amd64)
1299 err = cmlb_dkio_get_phygeom(cl, (caddr_t)arg, flag, tg_cookie);
1300 #else
1301 err = ENOTTY;
1302 #endif
1303 break;
1304 case DKIOCG_VIRTGEOM:
1305 cmlb_dbg(CMLB_TRACE, cl, "DKIOCG_VIRTGEOM\n");
1306 #if defined(__i386) || defined(__amd64)
1307 err = cmlb_dkio_get_virtgeom(cl, (caddr_t)arg, flag);
1308 #else
1309 err = ENOTTY;
1310 #endif
1311 break;
1312 case DKIOCPARTINFO:
1313 cmlb_dbg(CMLB_TRACE, cl, "DKIOCPARTINFO");
1314 #if defined(__i386) || defined(__amd64)
1315 err = cmlb_dkio_partinfo(cl, dev, (caddr_t)arg, flag);
1316 #else
1317 err = ENOTTY;
1318 #endif
1319 break;
1320 case DKIOCEXTPARTINFO:
1321 cmlb_dbg(CMLB_TRACE, cl, "DKIOCPARTINFO");
1322 #if defined(__i386) || defined(__amd64)
1323 err = cmlb_dkio_extpartinfo(cl, dev, (caddr_t)arg, flag);
1324 #else
1325 err = ENOTTY;
1326 #endif
1327 break;
1328 #if defined(__i386) || defined(__amd64)
1329 case DKIOCSETEXTPART:
1330 cmlb_dbg(CMLB_TRACE, cl, "DKIOCSETEXTPART");
1331 err = cmlb_dkio_set_ext_part(cl, (caddr_t)arg, flag, tg_cookie);
1332 break;
1333 #endif
1334 default:
1335 err = ENOTTY;
1336
1337 }
1338
1339 /*
1340 * An ioctl that succeeds and changed ('set') size(9P) information
1341 * needs to invalidate the cached devinfo snapshot to avoid having
1342 * old information being returned in a snapshots.
1343 *
1344 * NB: When available, call ddi_change_minor_node() to clear
1345 * SSIZEVALID in specfs vnodes via spec_size_invalidate().
1346 */
1347 if (err == 0) {
1348 switch (cmd) {
1349 case DKIOCSGEOM:
1350 case DKIOCSAPART:
1351 case DKIOCSVTOC:
1352 case DKIOCSEXTVTOC:
1353 case DKIOCSETEFI:
1354 i_ddi_prop_dyn_cache_invalidate(CMLB_DEVINFO(cl),
1355 i_ddi_prop_dyn_driver_get(CMLB_DEVINFO(cl)));
1356 }
1357 }
1358 return (err);
1359 }
1360
1361 dev_t
1362 cmlb_make_device(struct cmlb_lun *cl)
1363 {
1364 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE) {
1365 return (makedevice(ddi_driver_major(CMLB_DEVINFO(cl)),
1366 ddi_get_instance(
1367 CMLB_DEVINFO(cl)) << CMLBUNIT_FORCE_P0_SHIFT));
1368 } else {
1369 return (makedevice(ddi_driver_major(CMLB_DEVINFO(cl)),
1370 ddi_get_instance(CMLB_DEVINFO(cl)) << CMLBUNIT_SHIFT));
1371 }
1372 }
1373
1374 /*
1375 * Function: cmlb_check_update_blockcount
1376 *
1377 * Description: If current capacity value is invalid, obtains the
1378 * current capacity from target driver.
1379 *
1380 * Return Code: 0 success
1381 * EIO failure
1382 */
1383 static int
1384 cmlb_check_update_blockcount(struct cmlb_lun *cl, void *tg_cookie)
1385 {
1386 int status;
1387 diskaddr_t capacity;
1388 uint32_t lbasize;
1389
1390 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1391
1392 if (cl->cl_f_geometry_is_valid)
1393 return (0);
1394
1395 mutex_exit(CMLB_MUTEX(cl));
1396 status = DK_TG_GETCAP(cl, &capacity, tg_cookie);
1397 if (status != 0) {
1398 mutex_enter(CMLB_MUTEX(cl));
1399 return (EIO);
1400 }
1401
1402 status = DK_TG_GETBLOCKSIZE(cl, &lbasize, tg_cookie);
1403 mutex_enter(CMLB_MUTEX(cl));
1404 if (status != 0)
1405 return (EIO);
1406
1407 if ((capacity != 0) && (lbasize != 0)) {
1408 cl->cl_blockcount = capacity;
1409 cl->cl_tgt_blocksize = lbasize;
1410 if (!cl->cl_is_removable) {
1411 cl->cl_sys_blocksize = lbasize;
1412 }
1413 return (0);
1414 } else {
1415 return (EIO);
1416 }
1417 }
1418
1419 static int
1420 cmlb_create_minor(dev_info_t *dip, char *name, int spec_type,
1421 minor_t minor_num, char *node_type, int flag, boolean_t internal)
1422 {
1423 ASSERT(VALID_BOOLEAN(internal));
1424
1425 if (internal)
1426 return (ddi_create_internal_pathname(dip,
1427 name, spec_type, minor_num));
1428 else
1429 return (ddi_create_minor_node(dip,
1430 name, spec_type, minor_num, node_type, flag));
1431 }
1432
1433 /*
1434 * Function: cmlb_create_minor_nodes
1435 *
1436 * Description: Create or adjust the minor device nodes for the instance.
1437 * Minor nodes are created based on default label type,
1438 * current label type and last label type we created
1439 * minor nodes based on.
1440 *
1441 *
1442 * Arguments: cl - driver soft state (unit) structure
1443 *
1444 * Return Code: 0 success
1445 * ENXIO failure.
1446 *
1447 * Context: Kernel thread context
1448 */
1449 static int
1450 cmlb_create_minor_nodes(struct cmlb_lun *cl)
1451 {
1452 struct driver_minor_data *dmdp;
1453 int instance, shift;
1454 char name[48];
1455 cmlb_label_t newlabeltype;
1456 boolean_t internal;
1457
1458 ASSERT(cl != NULL);
1459 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1460
1461 internal = VOID2BOOLEAN(
1462 (cl->cl_alter_behavior & (CMLB_INTERNAL_MINOR_NODES)) != 0);
1463
1464 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
1465 shift = CMLBUNIT_FORCE_P0_SHIFT;
1466 else
1467 shift = CMLBUNIT_SHIFT;
1468
1469 /* check the most common case */
1470 if (cl->cl_cur_labeltype != CMLB_LABEL_UNDEF &&
1471 cl->cl_last_labeltype == cl->cl_cur_labeltype) {
1472 /* do nothing */
1473 return (0);
1474 }
1475
1476 if (cl->cl_def_labeltype == CMLB_LABEL_UNDEF) {
1477 /* we should never get here */
1478 return (ENXIO);
1479 }
1480
1481 if (cl->cl_last_labeltype == CMLB_LABEL_UNDEF) {
1482 /* first time during attach */
1483 newlabeltype = cl->cl_def_labeltype;
1484
1485 instance = ddi_get_instance(CMLB_DEVINFO(cl));
1486
1487 /* Create all the minor nodes for this target. */
1488 dmdp = (newlabeltype == CMLB_LABEL_EFI) ? dk_minor_data_efi :
1489 dk_minor_data;
1490 while (dmdp->name != NULL) {
1491
1492 (void) sprintf(name, "%s", dmdp->name);
1493
1494 if (cmlb_create_minor(CMLB_DEVINFO(cl), name,
1495 dmdp->type,
1496 (instance << shift) | dmdp->minor,
1497 cl->cl_node_type, NULL, internal) == DDI_FAILURE) {
1498 /*
1499 * Clean up any nodes that may have been
1500 * created, in case this fails in the middle
1501 * of the loop.
1502 */
1503 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
1504 return (ENXIO);
1505 }
1506 dmdp++;
1507 }
1508 cl->cl_last_labeltype = newlabeltype;
1509 #if defined(_SUNOS_VTOC_8)
1510 /*
1511 * "emulate" p0 device for sparc, used by lofi
1512 */
1513 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE) {
1514 if (cmlb_create_minor(CMLB_DEVINFO(cl), "q", S_IFBLK,
1515 (instance << CMLBUNIT_FORCE_P0_SHIFT) | P0_RAW_DISK,
1516 cl->cl_node_type, NULL, internal) == DDI_FAILURE) {
1517 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
1518 return (ENXIO);
1519 }
1520
1521 if (cmlb_create_minor(CMLB_DEVINFO(cl), "q,raw",
1522 S_IFCHR,
1523 (instance << CMLBUNIT_FORCE_P0_SHIFT) | P0_RAW_DISK,
1524 cl->cl_node_type, NULL, internal) == DDI_FAILURE) {
1525 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
1526 return (ENXIO);
1527 }
1528 }
1529 #endif /* defined(_SUNOS_VTOC_8) */
1530 return (0);
1531 }
1532
1533 /* Not first time */
1534 if (cl->cl_cur_labeltype == CMLB_LABEL_UNDEF) {
1535 if (cl->cl_last_labeltype != cl->cl_def_labeltype) {
1536 /* close time, revert to default. */
1537 newlabeltype = cl->cl_def_labeltype;
1538 } else {
1539 /*
1540 * do nothing since the type for which we last created
1541 * nodes matches the default
1542 */
1543 return (0);
1544 }
1545 } else {
1546 if (cl->cl_cur_labeltype != cl->cl_last_labeltype) {
1547 /* We are not closing, use current label type */
1548 newlabeltype = cl->cl_cur_labeltype;
1549 } else {
1550 /*
1551 * do nothing since the type for which we last created
1552 * nodes matches the current label type
1553 */
1554 return (0);
1555 }
1556 }
1557
1558 instance = ddi_get_instance(CMLB_DEVINFO(cl));
1559
1560 /*
1561 * Currently we only fix up the s7 node when we are switching
1562 * label types from or to EFI. This is consistent with
1563 * current behavior of sd.
1564 */
1565 if (newlabeltype == CMLB_LABEL_EFI &&
1566 cl->cl_last_labeltype != CMLB_LABEL_EFI) {
1567 /* from vtoc to EFI */
1568 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h");
1569 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h,raw");
1570 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "wd",
1571 S_IFBLK, (instance << shift) | WD_NODE,
1572 cl->cl_node_type, NULL, internal);
1573 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "wd,raw",
1574 S_IFCHR, (instance << shift) | WD_NODE,
1575 cl->cl_node_type, NULL, internal);
1576 } else {
1577 /* from efi to vtoc */
1578 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd");
1579 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd,raw");
1580 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h",
1581 S_IFBLK, (instance << shift) | WD_NODE,
1582 cl->cl_node_type, NULL, internal);
1583 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h,raw",
1584 S_IFCHR, (instance << shift) | WD_NODE,
1585 cl->cl_node_type, NULL, internal);
1586 }
1587
1588 cl->cl_last_labeltype = newlabeltype;
1589 return (0);
1590 }
1591
1592 /*
1593 * Function: cmlb_validate_geometry
1594 *
1595 * Description: Read the label from the disk (if present). Update the unit's
1596 * geometry and vtoc information from the data in the label.
1597 * Verify that the label is valid.
1598 *
1599 * Arguments:
1600 * cl driver soft state (unit) structure
1601 *
1602 * forcerevalid force revalidation even if we are already valid.
1603 * flags operation flags from target driver. Used for verbosity
1604 * control at this time.
1605 * tg_cookie cookie from target driver to be passed back to target
1606 * driver when we call back to it through tg_ops.
1607 *
1608 * Return Code: 0 - Successful completion
1609 * EINVAL - Invalid value in cl->cl_tgt_blocksize or
1610 * cl->cl_blockcount; or label on disk is corrupted
1611 * or unreadable.
1612 * EACCES - Reservation conflict at the device.
1613 * ENOMEM - Resource allocation error
1614 * ENOTSUP - geometry not applicable
1615 *
1616 * Context: Kernel thread only (can sleep).
1617 */
1618 static int
1619 cmlb_validate_geometry(struct cmlb_lun *cl, boolean_t forcerevalid, int flags,
1620 void *tg_cookie)
1621 {
1622 int label_error = 0;
1623 diskaddr_t capacity;
1624 int count;
1625
1626 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1627 ASSERT(VALID_BOOLEAN(forcerevalid));
1628
1629 if ((cl->cl_f_geometry_is_valid) && (!forcerevalid)) {
1630 if (cl->cl_cur_labeltype == CMLB_LABEL_EFI)
1631 return (ENOTSUP);
1632 return (0);
1633 }
1634
1635 if (cmlb_check_update_blockcount(cl, tg_cookie) != 0)
1636 return (EIO);
1637
1638 capacity = cl->cl_blockcount;
1639
1640 /*
1641 * Set up the "whole disk" fdisk partition; this should always
1642 * exist, regardless of whether the disk contains an fdisk table
1643 * or vtoc.
1644 */
1645 cl->cl_map[P0_RAW_DISK].dkl_cylno = 0;
1646 cl->cl_offset[P0_RAW_DISK] = 0;
1647 /*
1648 * note if capacity > int32_max(1TB) we are in 64bit environment
1649 * so no truncation happens
1650 */
1651 cl->cl_map[P0_RAW_DISK].dkl_nblk = capacity;
1652
1653 /*
1654 * Refresh the logical and physical geometry caches.
1655 * (data from MODE SENSE format/rigid disk geometry pages,
1656 * and scsi_ifgetcap("geometry").
1657 */
1658 cmlb_resync_geom_caches(cl, capacity, tg_cookie);
1659
1660 cl->cl_label_from_media = CMLB_LABEL_UNDEF;
1661 label_error = cmlb_use_efi(cl, capacity, flags, tg_cookie);
1662 if (label_error == 0) {
1663
1664 /* found a valid EFI label */
1665 cmlb_dbg(CMLB_TRACE, cl,
1666 "cmlb_validate_geometry: found EFI label\n");
1667 /*
1668 * solaris_size and geometry_is_valid are set in
1669 * cmlb_use_efi
1670 */
1671 return (ENOTSUP);
1672 }
1673
1674 /* NO EFI label found */
1675
1676 if (capacity > CMLB_EXTVTOC_LIMIT) {
1677 if (label_error == ESRCH) {
1678 /*
1679 * they've configured a LUN over 2TB, but used
1680 * format.dat to restrict format's view of the
1681 * capacity to be under 2TB in some earlier Solaris
1682 * release.
1683 */
1684 /* i.e > 2TB with a VTOC < 2TB */
1685 if (!(flags & CMLB_SILENT) &&
1686 (cl->cl_msglog_flag & CMLB_ALLOW_2TB_WARN)) {
1687
1688 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl),
1689 CE_NOTE, "!Disk (%s%d) is limited to 2 TB "
1690 "due to VTOC label. To use the full "
1691 "capacity of the disk, use format(1M) to "
1692 "relabel the disk with EFI/GPT label.\n",
1693 CMLB_LABEL(cl),
1694 ddi_get_instance(CMLB_DEVINFO(cl)));
1695
1696 cl->cl_msglog_flag &= ~CMLB_ALLOW_2TB_WARN;
1697 }
1698 } else {
1699 return (ENOTSUP);
1700 }
1701 }
1702
1703 label_error = 0;
1704
1705 /*
1706 * at this point it is either labeled with a VTOC or it is
1707 * under 1TB (<= 1TB actually for off-by-1)
1708 */
1709
1710 /*
1711 * Only DIRECT ACCESS devices will have Scl labels.
1712 * CD's supposedly have a Scl label, too
1713 */
1714 if (cl->cl_device_type == DTYPE_DIRECT || ISREMOVABLE(cl)) {
1715 struct dk_label *dkl;
1716 offset_t label_addr;
1717 int rval;
1718 size_t buffer_size;
1719
1720 /*
1721 * Note: This will set up cl->cl_solaris_size and
1722 * cl->cl_solaris_offset.
1723 */
1724 rval = cmlb_read_fdisk(cl, capacity, tg_cookie);
1725 if ((rval != 0) && !ISCD(cl)) {
1726 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1727 return (rval);
1728 }
1729
1730 if (cl->cl_solaris_size <= DK_LABEL_LOC) {
1731 /*
1732 * Found fdisk table but no Solaris partition entry,
1733 * so don't call cmlb_uselabel() and don't create
1734 * a default label.
1735 */
1736 label_error = 0;
1737 cl->cl_f_geometry_is_valid = B_TRUE;
1738 goto no_solaris_partition;
1739 }
1740
1741 label_addr = (daddr_t)(cl->cl_solaris_offset + DK_LABEL_LOC);
1742
1743 buffer_size = cl->cl_sys_blocksize;
1744
1745 cmlb_dbg(CMLB_TRACE, cl, "cmlb_validate_geometry: "
1746 "label_addr: 0x%x allocation size: 0x%x\n",
1747 label_addr, buffer_size);
1748
1749 if ((dkl = kmem_zalloc(buffer_size, KM_NOSLEEP)) == NULL)
1750 return (ENOMEM);
1751
1752 mutex_exit(CMLB_MUTEX(cl));
1753 rval = DK_TG_READ(cl, dkl, label_addr, buffer_size, tg_cookie);
1754 mutex_enter(CMLB_MUTEX(cl));
1755
1756 switch (rval) {
1757 case 0:
1758 /*
1759 * cmlb_uselabel will establish that the geometry
1760 * is valid.
1761 */
1762 if (cmlb_uselabel(cl,
1763 (struct dk_label *)(uintptr_t)dkl, flags) !=
1764 CMLB_LABEL_IS_VALID) {
1765 label_error = EINVAL;
1766 } else
1767 cl->cl_label_from_media = CMLB_LABEL_VTOC;
1768 break;
1769 case EACCES:
1770 label_error = EACCES;
1771 break;
1772 default:
1773 label_error = EINVAL;
1774 break;
1775 }
1776
1777 kmem_free(dkl, buffer_size);
1778 }
1779
1780 /*
1781 * If a valid label was not found, AND if no reservation conflict
1782 * was detected, then go ahead and create a default label (4069506).
1783 *
1784 * Note: currently, for VTOC_8 devices, the default label is created
1785 * for removables and hotpluggables only. For VTOC_16 devices, the
1786 * default label will be created for all devices.
1787 * (see cmlb_build_default_label)
1788 */
1789 #if defined(_SUNOS_VTOC_8)
1790 if ((ISREMOVABLE(cl) || ISHOTPLUGGABLE(cl)) &&
1791 (label_error != EACCES)) {
1792 #elif defined(_SUNOS_VTOC_16)
1793 if (label_error != EACCES) {
1794 #endif
1795 if (!cl->cl_f_geometry_is_valid) {
1796 cmlb_build_default_label(cl, tg_cookie);
1797 }
1798 label_error = 0;
1799 }
1800
1801 no_solaris_partition:
1802
1803 #if defined(_SUNOS_VTOC_16)
1804 /*
1805 * If we have valid geometry, set up the remaining fdisk partitions.
1806 * Note that dkl_cylno is not used for the fdisk map entries, so
1807 * we set it to an entirely bogus value.
1808 */
1809 for (count = 0; count < FDISK_PARTS; count++) {
1810 cl->cl_map[FDISK_P1 + count].dkl_cylno = UINT16_MAX;
1811 cl->cl_map[FDISK_P1 + count].dkl_nblk =
1812 cl->cl_fmap[count].fmap_nblk;
1813
1814 cl->cl_offset[FDISK_P1 + count] =
1815 cl->cl_fmap[count].fmap_start;
1816 }
1817 #endif
1818
1819 for (count = 0; count < NDKMAP; count++) {
1820 #if defined(_SUNOS_VTOC_8)
1821 struct dk_map *lp = &cl->cl_map[count];
1822 cl->cl_offset[count] =
1823 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect * lp->dkl_cylno;
1824 #elif defined(_SUNOS_VTOC_16)
1825 struct dkl_partition *vp = &cl->cl_vtoc.v_part[count];
1826
1827 cl->cl_offset[count] = vp->p_start + cl->cl_solaris_offset;
1828 #else
1829 #error "No VTOC format defined."
1830 #endif
1831 }
1832
1833 return (label_error);
1834 }
1835
1836 #if defined(_SUNOS_VTOC_16)
1837 /*
1838 * Function: cmlb_convert_geometry
1839 *
1840 * Description: Convert physical geometry into a dk_geom structure. In
1841 * other words, make sure we don't wrap 16-bit values.
1842 * e.g. converting from geom_cache to dk_geom
1843 *
1844 * Context: Kernel thread only
1845 */
1846 static void
1847 cmlb_convert_geometry(struct cmlb_lun *cl, diskaddr_t capacity,
1848 struct dk_geom *cl_g, void *tg_cookie)
1849 {
1850
1851 ASSERT(cl != NULL);
1852 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1853
1854 /* Unlabeled SCSI floppy device */
1855 if (capacity < 160) {
1856 /* Less than 80K */
1857 cl_g->dkg_nhead = 1;
1858 cl_g->dkg_ncyl = capacity;
1859 cl_g->dkg_nsect = 1;
1860 return;
1861 } else if (capacity <= 0x1000) {
1862 cl_g->dkg_nhead = 2;
1863 cl_g->dkg_ncyl = 80;
1864 cl_g->dkg_nsect = capacity / (cl_g->dkg_nhead * cl_g->dkg_ncyl);
1865 return;
1866 }
1867
1868 /*
1869 * For all devices we calculate cylinders using the heads and sectors
1870 * we assign based on capacity of the device. The algorithm is
1871 * designed to be compatible with the way other operating systems
1872 * lay out fdisk tables for X86 and to insure that the cylinders never
1873 * exceed 65535 to prevent problems with X86 ioctls that report
1874 * geometry.
1875 * For some smaller disk sizes we report geometry that matches those
1876 * used by X86 BIOS usage. For larger disks, we use SPT that are
1877 * multiples of 63, since other OSes that are not limited to 16-bits
1878 * for cylinders stop at 63 SPT we make do by using multiples of 63 SPT.
1879 *
1880 * The following table (in order) illustrates some end result
1881 * calculations:
1882 *
1883 * Maximum number of blocks nhead nsect
1884 *
1885 * 2097152 (1GB) 64 32
1886 * 16777216 (8GB) 128 32
1887 * 1052819775 (502.02GB) 255 63
1888 * 2105639550 (0.98TB) 255 126
1889 * 3158459325 (1.47TB) 255 189
1890 * 4211279100 (1.96TB) 255 252
1891 * 5264098875 (2.45TB) 255 315
1892 * ...
1893 *
1894 * For Solid State Drive(SSD), it uses 4K page size inside and may be
1895 * double with every new generation. If the I/O is not aligned with
1896 * page size on SSDs, SSDs perform a lot slower.
1897 * By default, Solaris partition starts from cylinder 1. It will be
1898 * misaligned even with 4K if using heads(255) and SPT(63). To
1899 * workaround the problem, if the device is SSD, we use heads(224) and
1900 * SPT multiple of 56. Thus the default Solaris partition starts from
1901 * a position that aligns with 128K on a 512 bytes sector size SSD.
1902 */
1903
1904 if (capacity <= 0x200000) {
1905 cl_g->dkg_nhead = 64;
1906 cl_g->dkg_nsect = 32;
1907 } else if (capacity <= 0x01000000) {
1908 cl_g->dkg_nhead = 128;
1909 cl_g->dkg_nsect = 32;
1910 } else {
1911 tg_attribute_t tgattribute;
1912 int is_solid_state;
1913 unsigned short nhead;
1914 unsigned short nsect;
1915
1916 bzero(&tgattribute, sizeof (tg_attribute_t));
1917
1918 mutex_exit(CMLB_MUTEX(cl));
1919 is_solid_state =
1920 (DK_TG_GETATTRIBUTE(cl, &tgattribute, tg_cookie) == 0) ?
1921 tgattribute.media_is_solid_state : FALSE;
1922 mutex_enter(CMLB_MUTEX(cl));
1923
1924 if (is_solid_state) {
1925 nhead = 224;
1926 nsect = 56;
1927 } else {
1928 nhead = 255;
1929 nsect = 63;
1930 }
1931
1932 cl_g->dkg_nhead = nhead;
1933
1934 /* make dkg_nsect be smallest multiple of nsect */
1935 cl_g->dkg_nsect = ((capacity +
1936 (UINT16_MAX * nhead * nsect) - 1) /
1937 (UINT16_MAX * nhead * nsect)) * nsect;
1938
1939 if (cl_g->dkg_nsect == 0)
1940 cl_g->dkg_nsect = (UINT16_MAX / nsect) * nsect;
1941 }
1942
1943 }
1944 #endif
1945
1946 /*
1947 * Function: cmlb_resync_geom_caches
1948 *
1949 * Description: (Re)initialize both geometry caches: the virtual geometry
1950 * information is extracted from the HBA (the "geometry"
1951 * capability), and the physical geometry cache data is
1952 * generated by issuing MODE SENSE commands.
1953 *
1954 * Arguments:
1955 * cl driver soft state (unit) structure
1956 * capacity disk capacity in #blocks
1957 * tg_cookie cookie from target driver to be passed back to target
1958 * driver when we call back to it through tg_ops.
1959 *
1960 * Context: Kernel thread only (can sleep).
1961 */
1962 static void
1963 cmlb_resync_geom_caches(struct cmlb_lun *cl, diskaddr_t capacity,
1964 void *tg_cookie)
1965 {
1966 struct cmlb_geom pgeom;
1967 struct cmlb_geom lgeom;
1968 struct cmlb_geom *pgeomp = &pgeom;
1969 unsigned short nhead;
1970 unsigned short nsect;
1971 int spc;
1972 int ret;
1973
1974 ASSERT(cl != NULL);
1975 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
1976
1977 /*
1978 * Ask the controller for its logical geometry.
1979 * Note: if the HBA does not support scsi_ifgetcap("geometry"),
1980 * then the lgeom cache will be invalid.
1981 */
1982 mutex_exit(CMLB_MUTEX(cl));
1983 bzero(&lgeom, sizeof (struct cmlb_geom));
1984 ret = DK_TG_GETVIRTGEOM(cl, &lgeom, tg_cookie);
1985 mutex_enter(CMLB_MUTEX(cl));
1986
1987 bcopy(&lgeom, &cl->cl_lgeom, sizeof (cl->cl_lgeom));
1988
1989 /*
1990 * Initialize the pgeom cache from lgeom, so that if MODE SENSE
1991 * doesn't work, DKIOCG_PHYSGEOM can return reasonable values.
1992 */
1993 if (ret != 0 || cl->cl_lgeom.g_nsect == 0 ||
1994 cl->cl_lgeom.g_nhead == 0) {
1995 /*
1996 * Note: Perhaps this needs to be more adaptive? The rationale
1997 * is that, if there's no HBA geometry from the HBA driver, any
1998 * guess is good, since this is the physical geometry. If MODE
1999 * SENSE fails this gives a max cylinder size for non-LBA access
2000 */
2001 nhead = 255;
2002 nsect = 63;
2003 } else {
2004 nhead = cl->cl_lgeom.g_nhead;
2005 nsect = cl->cl_lgeom.g_nsect;
2006 }
2007
2008 if (ISCD(cl)) {
2009 pgeomp->g_nhead = 1;
2010 pgeomp->g_nsect = nsect * nhead;
2011 } else {
2012 pgeomp->g_nhead = nhead;
2013 pgeomp->g_nsect = nsect;
2014 }
2015
2016 spc = pgeomp->g_nhead * pgeomp->g_nsect;
2017 pgeomp->g_capacity = capacity;
2018 if (spc == 0)
2019 pgeomp->g_ncyl = 0;
2020 else
2021 pgeomp->g_ncyl = pgeomp->g_capacity / spc;
2022 pgeomp->g_acyl = 0;
2023
2024 /*
2025 * Retrieve fresh geometry data from the hardware, stash it
2026 * here temporarily before we rebuild the incore label.
2027 *
2028 * We want to use the MODE SENSE commands to derive the
2029 * physical geometry of the device, but if either command
2030 * fails, the logical geometry is used as the fallback for
2031 * disk label geometry.
2032 */
2033
2034 mutex_exit(CMLB_MUTEX(cl));
2035 (void) DK_TG_GETPHYGEOM(cl, pgeomp, tg_cookie);
2036 mutex_enter(CMLB_MUTEX(cl));
2037
2038 /*
2039 * Now update the real copy while holding the mutex. This
2040 * way the global copy is never in an inconsistent state.
2041 */
2042 bcopy(pgeomp, &cl->cl_pgeom, sizeof (cl->cl_pgeom));
2043
2044 cmlb_dbg(CMLB_INFO, cl, "cmlb_resync_geom_caches: "
2045 "(cached from lgeom)\n");
2046 cmlb_dbg(CMLB_INFO, cl,
2047 " ncyl: %ld; acyl: %d; nhead: %d; nsect: %d\n",
2048 cl->cl_pgeom.g_ncyl, cl->cl_pgeom.g_acyl,
2049 cl->cl_pgeom.g_nhead, cl->cl_pgeom.g_nsect);
2050 cmlb_dbg(CMLB_INFO, cl, " lbasize: %d; capacity: %ld; "
2051 "intrlv: %d; rpm: %d\n", cl->cl_pgeom.g_secsize,
2052 cl->cl_pgeom.g_capacity, cl->cl_pgeom.g_intrlv,
2053 cl->cl_pgeom.g_rpm);
2054 }
2055
2056
2057 #if defined(__i386) || defined(__amd64)
2058 /*
2059 * Function: cmlb_update_ext_minor_nodes
2060 *
2061 * Description: Routine to add/remove extended partition device nodes
2062 *
2063 * Arguments:
2064 * cl driver soft state (unit) structure
2065 * num_parts Number of logical drives found on the LUN
2066 *
2067 * Should be called with the mutex held
2068 *
2069 * Return Code: 0 for success
2070 *
2071 * Context: User and Kernel thread
2072 *
2073 */
2074 static int
2075 cmlb_update_ext_minor_nodes(struct cmlb_lun *cl, int num_parts)
2076 {
2077 int i, count, shift;
2078 char name[48];
2079 int instance;
2080 struct driver_minor_data *demdp, *demdpr;
2081 char *devnm;
2082 dev_info_t *pdip;
2083 boolean_t internal;
2084
2085 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
2086 ASSERT(cl->cl_update_ext_minor_nodes == 1);
2087
2088 internal = VOID2BOOLEAN(
2089 (cl->cl_alter_behavior & (CMLB_INTERNAL_MINOR_NODES)) != 0);
2090 instance = ddi_get_instance(CMLB_DEVINFO(cl));
2091 demdp = dk_ext_minor_data;
2092 demdpr = &dk_ext_minor_data[MAX_EXT_PARTS];
2093
2094 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
2095 shift = CMLBUNIT_FORCE_P0_SHIFT;
2096 else
2097 shift = CMLBUNIT_SHIFT;
2098
2099 if (cl->cl_logical_drive_count) {
2100 for (i = 0; i < cl->cl_logical_drive_count; i++) {
2101 (void) sprintf(name, "%s", demdp->name);
2102 ddi_remove_minor_node(CMLB_DEVINFO(cl), name);
2103 (void) sprintf(name, "%s", demdpr->name);
2104 ddi_remove_minor_node(CMLB_DEVINFO(cl), name);
2105 demdp++;
2106 demdpr++;
2107 }
2108 /* There are existing device nodes. Remove them */
2109 devnm = kmem_alloc(MAXNAMELEN + 1, KM_SLEEP);
2110 (void) ddi_deviname(cl->cl_devi, devnm);
2111 pdip = ddi_get_parent(cl->cl_devi);
2112 (void) devfs_clean(pdip, devnm + 1, DV_CLEAN_FORCE);
2113 kmem_free(devnm, MAXNAMELEN + 1);
2114 }
2115
2116 demdp = dk_ext_minor_data;
2117 demdpr = &dk_ext_minor_data[MAX_EXT_PARTS];
2118
2119 for (i = 0; i < num_parts; i++) {
2120 (void) sprintf(name, "%s", demdp->name);
2121 if (cmlb_create_minor(CMLB_DEVINFO(cl), name,
2122 demdp->type,
2123 (instance << shift) | demdp->minor,
2124 cl->cl_node_type, NULL, internal) == DDI_FAILURE) {
2125 /*
2126 * Clean up any nodes that may have been
2127 * created, in case this fails in the middle
2128 * of the loop.
2129 */
2130 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
2131 cl->cl_logical_drive_count = 0;
2132 return (ENXIO);
2133 }
2134 (void) sprintf(name, "%s", demdpr->name);
2135 if (ddi_create_minor_node(CMLB_DEVINFO(cl), name,
2136 demdpr->type,
2137 (instance << shift) | demdpr->minor,
2138 cl->cl_node_type, NULL) == DDI_FAILURE) {
2139 /*
2140 * Clean up any nodes that may have been
2141 * created, in case this fails in the middle
2142 * of the loop.
2143 */
2144 ddi_remove_minor_node(CMLB_DEVINFO(cl), NULL);
2145 cl->cl_logical_drive_count = 0;
2146 return (ENXIO);
2147 }
2148 demdp++;
2149 demdpr++;
2150 }
2151
2152 /* Update the cl_map array for logical drives */
2153 for (count = 0; count < MAX_EXT_PARTS; count++) {
2154 cl->cl_map[FDISK_P4 + 1 + count].dkl_cylno = UINT32_MAX;
2155 cl->cl_map[FDISK_P4 + 1 + count].dkl_nblk =
2156 cl->cl_fmap[FD_NUMPART + count].fmap_nblk;
2157 cl->cl_offset[FDISK_P4 + 1 + count] =
2158 cl->cl_fmap[FD_NUMPART + count].fmap_start;
2159 }
2160
2161 cl->cl_logical_drive_count = i;
2162 cl->cl_update_ext_minor_nodes = 0;
2163 return (0);
2164 }
2165 /*
2166 * Function: cmlb_validate_ext_part
2167 *
2168 * Description: utility routine to validate an extended partition's
2169 * metadata as found on disk
2170 *
2171 * Arguments:
2172 * cl driver soft state (unit) structure
2173 * part partition number of the extended partition
2174 * epart partition number of the logical drive
2175 * start absolute sector number of the start of the logical
2176 * drive being validated
2177 * size size of logical drive being validated
2178 *
2179 * Return Code: 0 for success
2180 *
2181 * Context: User and Kernel thread
2182 *
2183 * Algorithm :
2184 * Error cases are :
2185 * 1. If start block is lesser than or equal to the end block
2186 * 2. If either start block or end block is beyond the bounadry
2187 * of the extended partition.
2188 * 3. start or end block overlap with existing partitions.
2189 * To check this, first make sure that the start block doesnt
2190 * overlap with existing partitions. Then, calculate the
2191 * possible end block for the given start block that doesnt
2192 * overlap with existing partitions. This can be calculated by
2193 * first setting the possible end block to the end of the
2194 * extended partition (optimistic) and then, checking if there
2195 * is any other partition that lies after the start of the
2196 * partition being validated. If so, set the possible end to
2197 * one block less than the beginning of the next nearest partition
2198 * If the actual end block is greater than the calculated end
2199 * block, we have an overlap.
2200 *
2201 */
2202 static int
2203 cmlb_validate_ext_part(struct cmlb_lun *cl, int part, int epart, uint32_t start,
2204 uint32_t size)
2205 {
2206 int i;
2207 uint32_t end = start + size - 1;
2208 uint32_t ext_start = cl->cl_fmap[part].fmap_start;
2209 uint32_t ext_end = ext_start + cl->cl_fmap[part].fmap_nblk - 1;
2210 uint32_t ts, te;
2211 uint32_t poss_end = ext_end;
2212
2213 if (end <= start) {
2214 return (1);
2215 }
2216
2217 /*
2218 * Check if the logical drive boundaries are within that of the
2219 * extended partition.
2220 */
2221 if (start <= ext_start || start > ext_end || end <= ext_start ||
2222 end > ext_end) {
2223 return (1);
2224 }
2225
2226 /*
2227 * epart will be equal to FD_NUMPART if it is the first logical drive.
2228 * There is no need to check for overlaps with other logical drives,
2229 * since it is the only logical drive that we have come across so far.
2230 */
2231 if (epart == FD_NUMPART) {
2232 return (0);
2233 }
2234
2235 /* Check for overlaps with existing logical drives */
2236 i = FD_NUMPART;
2237 ts = cl->cl_fmap[FD_NUMPART].fmap_start;
2238 te = ts + cl->cl_fmap[FD_NUMPART].fmap_nblk - 1;
2239
2240 while ((i < epart) && ts && te) {
2241 if (start >= ts && start <= te) {
2242 return (1);
2243 }
2244
2245 if ((ts < poss_end) && (ts > start)) {
2246 poss_end = ts - 1;
2247 }
2248
2249 i++;
2250 ts = cl->cl_fmap[i].fmap_start;
2251 te = ts + cl->cl_fmap[i].fmap_nblk - 1;
2252 }
2253
2254 if (end > poss_end) {
2255 return (1);
2256 }
2257
2258 return (0);
2259 }
2260
2261
2262 /*
2263 * Function: cmlb_is_linux_swap
2264 *
2265 * Description: utility routine to verify if a partition is a linux swap
2266 * partition or not.
2267 *
2268 * Arguments:
2269 * cl driver soft state (unit) structure
2270 * part_start absolute sector number of the start of the partition
2271 * being verified
2272 * tg_cookie cookie from target driver to be passed back to target
2273 * driver when we call back to it through tg_ops.
2274 *
2275 * Return Code: 0 for success
2276 *
2277 * Context: User and Kernel thread
2278 *
2279 * Notes:
2280 * The linux swap magic "SWAP-SPACE" or "SWAPSPACE2" is found as the
2281 * last 10 bytes of a disk block whose size is that of the linux page
2282 * size. This disk block is found at the beginning of the swap partition.
2283 */
2284 static int
2285 cmlb_is_linux_swap(struct cmlb_lun *cl, uint32_t part_start, void *tg_cookie)
2286 {
2287 int i;
2288 int rval = -1;
2289 uint32_t seek_offset;
2290 uint32_t linux_pg_size;
2291 char *buf, *linux_swap_magic;
2292 int sec_sz = cl->cl_sys_blocksize;
2293 /* Known linux kernel page sizes */
2294 uint32_t linux_pg_size_arr[] = {4096, };
2295
2296 ASSERT(cl != NULL);
2297 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
2298
2299 if ((buf = kmem_zalloc(sec_sz, KM_NOSLEEP)) == NULL) {
2300 return (ENOMEM);
2301 }
2302
2303 /*
2304 * Check if there is a sane Solaris VTOC
2305 * If there is a valid vtoc, no need to lookup
2306 * for the linux swap signature.
2307 */
2308 mutex_exit(CMLB_MUTEX(cl));
2309 rval = DK_TG_READ(cl, buf, part_start + DK_LABEL_LOC,
2310 sec_sz, tg_cookie);
2311 mutex_enter(CMLB_MUTEX(cl));
2312 if (rval != 0) {
2313 cmlb_dbg(CMLB_ERROR, cl,
2314 "cmlb_is_linux_swap: disk vtoc read err\n");
2315 rval = EIO;
2316 goto done;
2317 }
2318
2319 if ((((struct dk_label *)buf)->dkl_magic == DKL_MAGIC) &&
2320 (((struct dk_label *)buf)->dkl_vtoc.v_sanity == VTOC_SANE)) {
2321 rval = -1;
2322 goto done;
2323 }
2324
2325
2326 /* No valid vtoc, so check for linux swap signature */
2327 linux_swap_magic = buf + sec_sz - 10;
2328
2329 for (i = 0; i < sizeof (linux_pg_size_arr)/sizeof (uint32_t); i++) {
2330 linux_pg_size = linux_pg_size_arr[i];
2331 seek_offset = linux_pg_size/sec_sz - 1;
2332 seek_offset += part_start;
2333
2334 mutex_exit(CMLB_MUTEX(cl));
2335 rval = DK_TG_READ(cl, buf, seek_offset, sec_sz, tg_cookie);
2336 mutex_enter(CMLB_MUTEX(cl));
2337
2338 if (rval != 0) {
2339 cmlb_dbg(CMLB_ERROR, cl,
2340 "cmlb_is_linux_swap: disk read err\n");
2341 rval = EIO;
2342 break;
2343 }
2344
2345 rval = -1;
2346
2347 if ((strncmp(linux_swap_magic, "SWAP-SPACE", 10) == 0) ||
2348 (strncmp(linux_swap_magic, "SWAPSPACE2", 10) == 0)) {
2349 /* Found a linux swap */
2350 rval = 0;
2351 break;
2352 }
2353 }
2354
2355 done:
2356 kmem_free(buf, sec_sz);
2357 return (rval);
2358 }
2359 #endif
2360
2361 /*
2362 * Function: cmlb_read_fdisk
2363 *
2364 * Description: utility routine to read the fdisk table.
2365 *
2366 * Arguments:
2367 * cl driver soft state (unit) structure
2368 * capacity disk capacity in #blocks
2369 * tg_cookie cookie from target driver to be passed back to target
2370 * driver when we call back to it through tg_ops.
2371 *
2372 * Return Code: 0 for success (includes not reading for no_fdisk_present case
2373 * errnos from tg_rw if failed to read the first block.
2374 *
2375 * Context: Kernel thread only (can sleep).
2376 */
2377 /*ARGSUSED*/
2378 static int
2379 cmlb_read_fdisk(struct cmlb_lun *cl, diskaddr_t capacity, void *tg_cookie)
2380 {
2381 #if defined(_NO_FDISK_PRESENT)
2382
2383 cl->cl_solaris_offset = 0;
2384 cl->cl_solaris_size = capacity;
2385 bzero(cl->cl_fmap, sizeof (struct fmap) * FD_NUMPART);
2386 return (0);
2387
2388 #elif defined(_FIRMWARE_NEEDS_FDISK)
2389
2390 struct ipart *fdp;
2391 struct mboot *mbp;
2392 struct ipart fdisk[FD_NUMPART];
2393 int i, k;
2394 char sigbuf[2];
2395 caddr_t bufp;
2396 int uidx;
2397 int rval;
2398 int lba = 0;
2399 uint_t solaris_offset; /* offset to solaris part. */
2400 daddr_t solaris_size; /* size of solaris partition */
2401 uint32_t blocksize;
2402 #if defined(__i386) || defined(__amd64)
2403 struct ipart eparts[2];
2404 struct ipart *efdp1 = &eparts[0];
2405 struct ipart *efdp2 = &eparts[1];
2406 int ext_part_exists = 0;
2407 int ld_count = 0;
2408 #endif
2409
2410 ASSERT(cl != NULL);
2411 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
2412
2413 /*
2414 * Start off assuming no fdisk table
2415 */
2416 solaris_offset = 0;
2417 solaris_size = capacity;
2418
2419 blocksize = cl->cl_tgt_blocksize;
2420
2421 bufp = kmem_zalloc(blocksize, KM_SLEEP);
2422
2423 mutex_exit(CMLB_MUTEX(cl));
2424 rval = DK_TG_READ(cl, bufp, 0, blocksize, tg_cookie);
2425 mutex_enter(CMLB_MUTEX(cl));
2426
2427 if (rval != 0) {
2428 cmlb_dbg(CMLB_ERROR, cl,
2429 "cmlb_read_fdisk: fdisk read err\n");
2430 bzero(cl->cl_fmap, sizeof (struct fmap) * FD_NUMPART);
2431 goto done;
2432 }
2433
2434 mbp = (struct mboot *)bufp;
2435
2436 /*
2437 * The fdisk table does not begin on a 4-byte boundary within the
2438 * master boot record, so we copy it to an aligned structure to avoid
2439 * alignment exceptions on some processors.
2440 */
2441 bcopy(&mbp->parts[0], fdisk, sizeof (fdisk));
2442
2443 /*
2444 * Check for lba support before verifying sig; sig might not be
2445 * there, say on a blank disk, but the max_chs mark may still
2446 * be present.
2447 *
2448 * Note: LBA support and BEFs are an x86-only concept but this
2449 * code should work OK on SPARC as well.
2450 */
2451
2452 /*
2453 * First, check for lba-access-ok on root node (or prom root node)
2454 * if present there, don't need to search fdisk table.
2455 */
2456 if (ddi_getprop(DDI_DEV_T_ANY, ddi_root_node(), 0,
2457 "lba-access-ok", 0) != 0) {
2458 /* All drives do LBA; don't search fdisk table */
2459 lba = 1;
2460 } else {
2461 /* Okay, look for mark in fdisk table */
2462 for (fdp = fdisk, i = 0; i < FD_NUMPART; i++, fdp++) {
2463 /* accumulate "lba" value from all partitions */
2464 lba = (lba || cmlb_has_max_chs_vals(fdp));
2465 }
2466 }
2467
2468 if (lba != 0) {
2469 dev_t dev = cmlb_make_device(cl);
2470
2471 if (ddi_getprop(dev, CMLB_DEVINFO(cl), DDI_PROP_DONTPASS,
2472 "lba-access-ok", 0) == 0) {
2473 /* not found; create it */
2474 if (ddi_prop_create(dev, CMLB_DEVINFO(cl), 0,
2475 "lba-access-ok", (caddr_t)NULL, 0) !=
2476 DDI_PROP_SUCCESS) {
2477 cmlb_dbg(CMLB_ERROR, cl,
2478 "cmlb_read_fdisk: Can't create lba "
2479 "property for instance %d\n",
2480 ddi_get_instance(CMLB_DEVINFO(cl)));
2481 }
2482 }
2483 }
2484
2485 bcopy(&mbp->signature, sigbuf, sizeof (sigbuf));
2486
2487 /*
2488 * Endian-independent signature check
2489 */
2490 if (((sigbuf[1] & 0xFF) != ((MBB_MAGIC >> 8) & 0xFF)) ||
2491 (sigbuf[0] != (MBB_MAGIC & 0xFF))) {
2492 cmlb_dbg(CMLB_ERROR, cl,
2493 "cmlb_read_fdisk: no fdisk\n");
2494 bzero(cl->cl_fmap, sizeof (struct fmap) * FD_NUMPART);
2495 goto done;
2496 }
2497
2498 #ifdef CMLBDEBUG
2499 if (cmlb_level_mask & CMLB_LOGMASK_INFO) {
2500 fdp = fdisk;
2501 cmlb_dbg(CMLB_INFO, cl, "cmlb_read_fdisk:\n");
2502 cmlb_dbg(CMLB_INFO, cl, " relsect "
2503 "numsect sysid bootid\n");
2504 for (i = 0; i < FD_NUMPART; i++, fdp++) {
2505 cmlb_dbg(CMLB_INFO, cl,
2506 " %d: %8d %8d 0x%08x 0x%08x\n",
2507 i, fdp->relsect, fdp->numsect,
2508 fdp->systid, fdp->bootid);
2509 }
2510 }
2511 #endif
2512
2513 /*
2514 * Try to find the unix partition
2515 */
2516 uidx = -1;
2517 solaris_offset = 0;
2518 solaris_size = 0;
2519
2520 for (fdp = fdisk, i = 0; i < FD_NUMPART; i++, fdp++) {
2521 uint32_t relsect;
2522 uint32_t numsect;
2523 uchar_t systid;
2524 #if defined(__i386) || defined(__amd64)
2525 /*
2526 * Stores relative block offset from the beginning of the
2527 * Extended Partition.
2528 */
2529 int ext_relsect = 0;
2530 #endif
2531
2532 if (fdp->numsect == 0) {
2533 cl->cl_fmap[i].fmap_start = 0;
2534 cl->cl_fmap[i].fmap_nblk = 0;
2535 continue;
2536 }
2537
2538 /*
2539 * Data in the fdisk table is little-endian.
2540 */
2541 relsect = LE_32(fdp->relsect);
2542 numsect = LE_32(fdp->numsect);
2543
2544 cl->cl_fmap[i].fmap_start = relsect;
2545 cl->cl_fmap[i].fmap_nblk = numsect;
2546 cl->cl_fmap[i].fmap_systid = LE_8(fdp->systid);
2547
2548 #if defined(__i386) || defined(__amd64)
2549 /* Support only one extended partition per LUN */
2550 if ((fdp->systid == EXTDOS || fdp->systid == FDISK_EXTLBA) &&
2551 (ext_part_exists == 0)) {
2552 int j;
2553 uint32_t logdrive_offset;
2554 uint32_t ext_numsect;
2555 uint32_t abs_secnum;
2556
2557 ext_part_exists = 1;
2558
2559 for (j = FD_NUMPART; j < FDISK_PARTS; j++) {
2560 mutex_exit(CMLB_MUTEX(cl));
2561 rval = DK_TG_READ(cl, bufp,
2562 (relsect + ext_relsect), blocksize,
2563 tg_cookie);
2564 mutex_enter(CMLB_MUTEX(cl));
2565
2566 if (rval != 0) {
2567 cmlb_dbg(CMLB_ERROR, cl,
2568 "cmlb_read_fdisk: Extended "
2569 "partition read err\n");
2570 goto done;
2571 }
2572 /*
2573 * The first ipart entry provides the offset
2574 * at which the logical drive starts off from
2575 * the beginning of the container partition
2576 * and the size of the logical drive.
2577 * The second ipart entry provides the offset
2578 * of the next container partition from the
2579 * beginning of the extended partition.
2580 */
2581 bcopy(&bufp[FDISK_PART_TABLE_START], eparts,
2582 sizeof (eparts));
2583 logdrive_offset = LE_32(efdp1->relsect);
2584 ext_numsect = LE_32(efdp1->numsect);
2585 systid = LE_8(efdp1->systid);
2586 if (logdrive_offset <= 0 || ext_numsect <= 0)
2587 break;
2588 abs_secnum = relsect + ext_relsect +
2589 logdrive_offset;
2590
2591 /* Boundary condition and overlap checking */
2592 if (cmlb_validate_ext_part(cl, i, j, abs_secnum,
2593 ext_numsect)) {
2594 break;
2595 }
2596
2597 if ((cl->cl_fmap[j].fmap_start != abs_secnum) ||
2598 (cl->cl_fmap[j].fmap_nblk != ext_numsect) ||
2599 (cl->cl_fmap[j].fmap_systid != systid)) {
2600 /*
2601 * Indicates change from previous
2602 * partinfo. Need to recreate
2603 * logical device nodes.
2604 */
2605 cl->cl_update_ext_minor_nodes = 1;
2606 }
2607 cl->cl_fmap[j].fmap_start = abs_secnum;
2608 cl->cl_fmap[j].fmap_nblk = ext_numsect;
2609 cl->cl_fmap[j].fmap_systid = systid;
2610 ld_count++;
2611
2612 if ((efdp1->systid == SUNIXOS &&
2613 (cmlb_is_linux_swap(cl, abs_secnum,
2614 tg_cookie) != 0)) ||
2615 efdp1->systid == SUNIXOS2) {
2616 if (uidx == -1) {
2617 uidx = 0;
2618 solaris_offset = abs_secnum;
2619 solaris_size = ext_numsect;
2620 }
2621 }
2622
2623 if ((ext_relsect = LE_32(efdp2->relsect)) == 0)
2624 break;
2625 }
2626 }
2627
2628 #endif
2629
2630 if (fdp->systid != SUNIXOS &&
2631 fdp->systid != SUNIXOS2 &&
2632 fdp->systid != EFI_PMBR) {
2633 continue;
2634 }
2635
2636 /*
2637 * use the last active solaris partition id found
2638 * (there should only be 1 active partition id)
2639 *
2640 * if there are no active solaris partition id
2641 * then use the first inactive solaris partition id
2642 */
2643 if ((uidx == -1) || (fdp->bootid == ACTIVE)) {
2644 #if defined(__i386) || defined(__amd64)
2645 if (fdp->systid != SUNIXOS ||
2646 (fdp->systid == SUNIXOS &&
2647 (cmlb_is_linux_swap(cl, relsect,
2648 tg_cookie) != 0))) {
2649 #endif
2650 uidx = i;
2651 solaris_offset = relsect;
2652 solaris_size = numsect;
2653 #if defined(__i386) || defined(__amd64)
2654 }
2655 #endif
2656 }
2657 }
2658 #if defined(__i386) || defined(__amd64)
2659 if (ld_count < cl->cl_logical_drive_count) {
2660 /*
2661 * Some/all logical drives were deleted. Clear out
2662 * the fmap entries correspoding to those deleted drives.
2663 */
2664 for (k = ld_count + FD_NUMPART;
2665 k < cl->cl_logical_drive_count + FD_NUMPART; k++) {
2666 cl->cl_fmap[k].fmap_start = 0;
2667 cl->cl_fmap[k].fmap_nblk = 0;
2668 cl->cl_fmap[k].fmap_systid = 0;
2669 }
2670 cl->cl_update_ext_minor_nodes = 1;
2671 }
2672 if (cl->cl_update_ext_minor_nodes) {
2673 rval = cmlb_update_ext_minor_nodes(cl, ld_count);
2674 if (rval != 0) {
2675 goto done;
2676 }
2677 }
2678 #endif
2679 cmlb_dbg(CMLB_INFO, cl, "fdisk 0x%x 0x%lx",
2680 cl->cl_solaris_offset, cl->cl_solaris_size);
2681 done:
2682
2683 /*
2684 * Clear the VTOC info, only if the Solaris partition entry
2685 * has moved, changed size, been deleted, or if the size of
2686 * the partition is too small to even fit the label sector.
2687 */
2688 if ((cl->cl_solaris_offset != solaris_offset) ||
2689 (cl->cl_solaris_size != solaris_size) ||
2690 solaris_size <= DK_LABEL_LOC) {
2691 cmlb_dbg(CMLB_INFO, cl, "fdisk moved 0x%x 0x%lx",
2692 solaris_offset, solaris_size);
2693 bzero(&cl->cl_g, sizeof (struct dk_geom));
2694 bzero(&cl->cl_vtoc, sizeof (struct dk_vtoc));
2695 bzero(&cl->cl_map, NDKMAP * (sizeof (struct dk_map)));
2696 cl->cl_f_geometry_is_valid = B_FALSE;
2697 }
2698 cl->cl_solaris_offset = solaris_offset;
2699 cl->cl_solaris_size = solaris_size;
2700 kmem_free(bufp, blocksize);
2701 return (rval);
2702
2703 #else /* #elif defined(_FIRMWARE_NEEDS_FDISK) */
2704 #error "fdisk table presence undetermined for this platform."
2705 #endif /* #if defined(_NO_FDISK_PRESENT) */
2706 }
2707
2708 static void
2709 cmlb_swap_efi_gpt(efi_gpt_t *e)
2710 {
2711 _NOTE(ASSUMING_PROTECTED(*e))
2712 e->efi_gpt_Signature = LE_64(e->efi_gpt_Signature);
2713 e->efi_gpt_Revision = LE_32(e->efi_gpt_Revision);
2714 e->efi_gpt_HeaderSize = LE_32(e->efi_gpt_HeaderSize);
2715 e->efi_gpt_HeaderCRC32 = LE_32(e->efi_gpt_HeaderCRC32);
2716 e->efi_gpt_MyLBA = LE_64(e->efi_gpt_MyLBA);
2717 e->efi_gpt_AlternateLBA = LE_64(e->efi_gpt_AlternateLBA);
2718 e->efi_gpt_FirstUsableLBA = LE_64(e->efi_gpt_FirstUsableLBA);
2719 e->efi_gpt_LastUsableLBA = LE_64(e->efi_gpt_LastUsableLBA);
2720 UUID_LE_CONVERT(e->efi_gpt_DiskGUID, e->efi_gpt_DiskGUID);
2721 e->efi_gpt_PartitionEntryLBA = LE_64(e->efi_gpt_PartitionEntryLBA);
2722 e->efi_gpt_NumberOfPartitionEntries =
2723 LE_32(e->efi_gpt_NumberOfPartitionEntries);
2724 e->efi_gpt_SizeOfPartitionEntry =
2725 LE_32(e->efi_gpt_SizeOfPartitionEntry);
2726 e->efi_gpt_PartitionEntryArrayCRC32 =
2727 LE_32(e->efi_gpt_PartitionEntryArrayCRC32);
2728 }
2729
2730 static void
2731 cmlb_swap_efi_gpe(int nparts, efi_gpe_t *p)
2732 {
2733 int i;
2734
2735 _NOTE(ASSUMING_PROTECTED(*p))
2736 for (i = 0; i < nparts; i++) {
2737 UUID_LE_CONVERT(p[i].efi_gpe_PartitionTypeGUID,
2738 p[i].efi_gpe_PartitionTypeGUID);
2739 p[i].efi_gpe_StartingLBA = LE_64(p[i].efi_gpe_StartingLBA);
2740 p[i].efi_gpe_EndingLBA = LE_64(p[i].efi_gpe_EndingLBA);
2741 /* PartitionAttrs */
2742 }
2743 }
2744
2745 static int
2746 cmlb_validate_efi(efi_gpt_t *labp)
2747 {
2748 if (labp->efi_gpt_Signature != EFI_SIGNATURE)
2749 return (EINVAL);
2750 /* at least 96 bytes in this version of the spec. */
2751 if (sizeof (efi_gpt_t) - sizeof (labp->efi_gpt_Reserved2) >
2752 labp->efi_gpt_HeaderSize)
2753 return (EINVAL);
2754 /* this should be 128 bytes */
2755 if (labp->efi_gpt_SizeOfPartitionEntry != sizeof (efi_gpe_t))
2756 return (EINVAL);
2757 return (0);
2758 }
2759
2760 /*
2761 * This function returns B_FALSE if there is a valid MBR signature and no
2762 * partition table entries of type EFI_PMBR (0xEE). Otherwise it returns B_TRUE.
2763 *
2764 * The EFI spec (1.10 and later) requires having a Protective MBR (PMBR) to
2765 * recognize the disk as GPT partitioned. However, some other OS creates an MBR
2766 * where a PMBR entry is not the only one. Also, if the first block has been
2767 * corrupted, currently best attempt to allow data access would be to try to
2768 * check for GPT headers. Hence in case of more than one partition entry, but
2769 * at least one EFI_PMBR partition type or no valid magic number, the function
2770 * returns B_TRUE to continue with looking for GPT header.
2771 */
2772
2773 static boolean_t
2774 cmlb_check_efi_mbr(uchar_t *buf, boolean_t *is_mbr)
2775 {
2776 struct ipart *fdp;
2777 struct mboot *mbp = (struct mboot *)buf;
2778 struct ipart fdisk[FD_NUMPART];
2779 int i;
2780
2781 if (is_mbr != NULL)
2782 *is_mbr = B_TRUE;
2783
2784 if (LE_16(mbp->signature) != MBB_MAGIC) {
2785 if (is_mbr != NULL)
2786 *is_mbr = B_FALSE;
2787 return (B_TRUE);
2788 }
2789
2790 bcopy(&mbp->parts[0], fdisk, sizeof (fdisk));
2791
2792 for (fdp = fdisk, i = 0; i < FD_NUMPART; i++, fdp++) {
2793 if (fdp->systid == EFI_PMBR)
2794 return (B_TRUE);
2795 }
2796
2797 return (B_FALSE);
2798 }
2799
2800 static int
2801 cmlb_use_efi(struct cmlb_lun *cl, diskaddr_t capacity, int flags,
2802 void *tg_cookie)
2803 {
2804 int i;
2805 int rval = 0;
2806 efi_gpe_t *partitions;
2807 uchar_t *buf;
2808 uint_t lbasize; /* is really how much to read */
2809 diskaddr_t cap = 0;
2810 uint_t nparts;
2811 diskaddr_t gpe_lba;
2812 diskaddr_t alternate_lba;
2813 int iofailed = 0;
2814 struct uuid uuid_type_reserved = EFI_RESERVED;
2815 #if defined(_FIRMWARE_NEEDS_FDISK)
2816 boolean_t is_mbr;
2817 #endif
2818
2819 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
2820
2821 lbasize = cl->cl_sys_blocksize;
2822
2823 cl->cl_reserved = -1;
2824 mutex_exit(CMLB_MUTEX(cl));
2825
2826 buf = kmem_zalloc(EFI_MIN_ARRAY_SIZE, KM_SLEEP);
2827
2828 rval = DK_TG_READ(cl, buf, 0, lbasize, tg_cookie);
2829 if (rval) {
2830 iofailed = 1;
2831 goto done_err;
2832 }
2833 if (((struct dk_label *)buf)->dkl_magic == DKL_MAGIC) {
2834 /* not ours */
2835 rval = ESRCH;
2836 goto done_err;
2837 }
2838
2839 #if defined(_FIRMWARE_NEEDS_FDISK)
2840 if (!cmlb_check_efi_mbr(buf, &is_mbr)) {
2841 if (is_mbr)
2842 rval = ESRCH;
2843 else
2844 rval = EINVAL;
2845 goto done_err;
2846 }
2847 #else
2848 if (!cmlb_check_efi_mbr(buf, NULL)) {
2849 rval = EINVAL;
2850 goto done_err;
2851 }
2852
2853 #endif
2854
2855 rval = DK_TG_READ(cl, buf, 1, lbasize, tg_cookie);
2856 if (rval) {
2857 iofailed = 1;
2858 goto done_err;
2859 }
2860 cmlb_swap_efi_gpt((efi_gpt_t *)buf);
2861
2862 if ((rval = cmlb_validate_efi((efi_gpt_t *)buf)) != 0) {
2863 /*
2864 * Couldn't read the primary, try the backup. Our
2865 * capacity at this point could be based on CHS, so
2866 * check what the device reports.
2867 */
2868 rval = DK_TG_GETCAP(cl, &cap, tg_cookie);
2869 if (rval) {
2870 iofailed = 1;
2871 goto done_err;
2872 }
2873
2874 /*
2875 * CMLB_OFF_BY_ONE case, we check the next to last block first
2876 * for backup GPT header, otherwise check the last block.
2877 */
2878
2879 if ((rval = DK_TG_READ(cl, buf,
2880 cap - ((cl->cl_alter_behavior & CMLB_OFF_BY_ONE) ? 2 : 1),
2881 lbasize, tg_cookie))
2882 != 0) {
2883 iofailed = 1;
2884 goto done_err;
2885 }
2886 cmlb_swap_efi_gpt((efi_gpt_t *)buf);
2887
2888 if ((rval = cmlb_validate_efi((efi_gpt_t *)buf)) != 0) {
2889
2890 if (!(cl->cl_alter_behavior & CMLB_OFF_BY_ONE))
2891 goto done_err;
2892 if ((rval = DK_TG_READ(cl, buf, cap - 1, lbasize,
2893 tg_cookie)) != 0)
2894 goto done_err;
2895 cmlb_swap_efi_gpt((efi_gpt_t *)buf);
2896 if ((rval = cmlb_validate_efi((efi_gpt_t *)buf)) != 0)
2897 goto done_err;
2898 }
2899 if (!(flags & CMLB_SILENT))
2900 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl), CE_WARN,
2901 "primary label corrupt; using backup\n");
2902 }
2903
2904 nparts = ((efi_gpt_t *)buf)->efi_gpt_NumberOfPartitionEntries;
2905 gpe_lba = ((efi_gpt_t *)buf)->efi_gpt_PartitionEntryLBA;
2906 alternate_lba = ((efi_gpt_t *)buf)->efi_gpt_AlternateLBA;
2907
2908 rval = DK_TG_READ(cl, buf, gpe_lba, EFI_MIN_ARRAY_SIZE, tg_cookie);
2909 if (rval) {
2910 iofailed = 1;
2911 goto done_err;
2912 }
2913 partitions = (efi_gpe_t *)buf;
2914
2915 if (nparts > MAXPART) {
2916 nparts = MAXPART;
2917 }
2918 cmlb_swap_efi_gpe(nparts, partitions);
2919
2920 mutex_enter(CMLB_MUTEX(cl));
2921
2922 /* Fill in partition table. */
2923 for (i = 0; i < nparts; i++) {
2924 if (partitions->efi_gpe_StartingLBA != 0 ||
2925 partitions->efi_gpe_EndingLBA != 0) {
2926 cl->cl_map[i].dkl_cylno =
2927 partitions->efi_gpe_StartingLBA;
2928 cl->cl_map[i].dkl_nblk =
2929 partitions->efi_gpe_EndingLBA -
2930 partitions->efi_gpe_StartingLBA + 1;
2931 cl->cl_offset[i] =
2932 partitions->efi_gpe_StartingLBA;
2933 }
2934
2935 if (cl->cl_reserved == -1) {
2936 if (bcmp(&partitions->efi_gpe_PartitionTypeGUID,
2937 &uuid_type_reserved, sizeof (struct uuid)) == 0) {
2938 cl->cl_reserved = i;
2939 }
2940 }
2941 if (i == WD_NODE) {
2942 /*
2943 * minor number 7 corresponds to the whole disk
2944 * if the disk capacity is expanded after disk is
2945 * labeled, minor number 7 represents the capacity
2946 * indicated by the disk label.
2947 */
2948 cl->cl_map[i].dkl_cylno = 0;
2949 if (alternate_lba == 1) {
2950 /*
2951 * We are using backup label. Since we can
2952 * find a valid label at the end of disk,
2953 * the disk capacity is not expanded.
2954 */
2955 cl->cl_map[i].dkl_nblk = capacity;
2956 } else {
2957 cl->cl_map[i].dkl_nblk = alternate_lba + 1;
2958 }
2959 cl->cl_offset[i] = 0;
2960 }
2961 partitions++;
2962 }
2963 cl->cl_solaris_offset = 0;
2964 cl->cl_solaris_size = capacity;
2965 cl->cl_label_from_media = CMLB_LABEL_EFI;
2966 cl->cl_f_geometry_is_valid = B_TRUE;
2967
2968 /* clear the vtoc label */
2969 bzero(&cl->cl_vtoc, sizeof (struct dk_vtoc));
2970
2971 kmem_free(buf, EFI_MIN_ARRAY_SIZE);
2972 return (0);
2973
2974 done_err:
2975 kmem_free(buf, EFI_MIN_ARRAY_SIZE);
2976 mutex_enter(CMLB_MUTEX(cl));
2977 done_err1:
2978 /*
2979 * if we didn't find something that could look like a VTOC
2980 * and the disk is over 1TB, we know there isn't a valid label.
2981 * Otherwise let cmlb_uselabel decide what to do. We only
2982 * want to invalidate this if we're certain the label isn't
2983 * valid because cmlb_prop_op will now fail, which in turn
2984 * causes things like opens and stats on the partition to fail.
2985 */
2986 if ((capacity > CMLB_EXTVTOC_LIMIT) && (rval != ESRCH) && !iofailed) {
2987 cl->cl_f_geometry_is_valid = B_FALSE;
2988 }
2989 return (rval);
2990 }
2991
2992
2993 /*
2994 * Function: cmlb_uselabel
2995 *
2996 * Description: Validate the disk label and update the relevant data (geometry,
2997 * partition, vtoc, and capacity data) in the cmlb_lun struct.
2998 * Marks the geometry of the unit as being valid.
2999 *
3000 * Arguments: cl: unit struct.
3001 * dk_label: disk label
3002 *
3003 * Return Code: CMLB_LABEL_IS_VALID: Label read from disk is OK; geometry,
3004 * partition, vtoc, and capacity data are good.
3005 *
3006 * CMLB_LABEL_IS_INVALID: Magic number or checksum error in the
3007 * label; or computed capacity does not jibe with capacity
3008 * reported from the READ CAPACITY command.
3009 *
3010 * Context: Kernel thread only (can sleep).
3011 */
3012 static int
3013 cmlb_uselabel(struct cmlb_lun *cl, struct dk_label *labp, int flags)
3014 {
3015 short *sp;
3016 short sum;
3017 short count;
3018 int label_error = CMLB_LABEL_IS_VALID;
3019 int i;
3020 diskaddr_t label_capacity;
3021 uint32_t part_end;
3022 diskaddr_t track_capacity;
3023 #if defined(_SUNOS_VTOC_16)
3024 struct dkl_partition *vpartp;
3025 #endif
3026 ASSERT(cl != NULL);
3027 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
3028
3029 /* Validate the magic number of the label. */
3030 if (labp->dkl_magic != DKL_MAGIC) {
3031 #if defined(__sparc)
3032 if (!ISREMOVABLE(cl) && !ISHOTPLUGGABLE(cl)) {
3033 if (!(flags & CMLB_SILENT))
3034 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl),
3035 CE_WARN,
3036 "Corrupt label; wrong magic number\n");
3037 }
3038 #endif
3039 return (CMLB_LABEL_IS_INVALID);
3040 }
3041
3042 /* Validate the checksum of the label. */
3043 sp = (short *)labp;
3044 sum = 0;
3045 count = sizeof (struct dk_label) / sizeof (short);
3046 while (count--) {
3047 sum ^= *sp++;
3048 }
3049
3050 if (sum != 0) {
3051 #if defined(_SUNOS_VTOC_16)
3052 if (!ISCD(cl)) {
3053 #elif defined(_SUNOS_VTOC_8)
3054 if (!ISREMOVABLE(cl) && !ISHOTPLUGGABLE(cl)) {
3055 #endif
3056 if (!(flags & CMLB_SILENT))
3057 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl),
3058 CE_WARN,
3059 "Corrupt label - label checksum failed\n");
3060 }
3061 return (CMLB_LABEL_IS_INVALID);
3062 }
3063
3064
3065 /*
3066 * Fill in geometry structure with data from label.
3067 */
3068 bzero(&cl->cl_g, sizeof (struct dk_geom));
3069 cl->cl_g.dkg_ncyl = labp->dkl_ncyl;
3070 cl->cl_g.dkg_acyl = labp->dkl_acyl;
3071 cl->cl_g.dkg_bcyl = 0;
3072 cl->cl_g.dkg_nhead = labp->dkl_nhead;
3073 cl->cl_g.dkg_nsect = labp->dkl_nsect;
3074 cl->cl_g.dkg_intrlv = labp->dkl_intrlv;
3075
3076 #if defined(_SUNOS_VTOC_8)
3077 cl->cl_g.dkg_gap1 = labp->dkl_gap1;
3078 cl->cl_g.dkg_gap2 = labp->dkl_gap2;
3079 cl->cl_g.dkg_bhead = labp->dkl_bhead;
3080 #endif
3081 #if defined(_SUNOS_VTOC_16)
3082 cl->cl_dkg_skew = labp->dkl_skew;
3083 #endif
3084
3085 #if defined(__i386) || defined(__amd64)
3086 cl->cl_g.dkg_apc = labp->dkl_apc;
3087 #endif
3088
3089 /*
3090 * Currently we rely on the values in the label being accurate. If
3091 * dkl_rpm or dkl_pcly are zero in the label, use a default value.
3092 *
3093 * Note: In the future a MODE SENSE may be used to retrieve this data,
3094 * although this command is optional in SCSI-2.
3095 */
3096 cl->cl_g.dkg_rpm = (labp->dkl_rpm != 0) ? labp->dkl_rpm : 3600;
3097 cl->cl_g.dkg_pcyl = (labp->dkl_pcyl != 0) ? labp->dkl_pcyl :
3098 (cl->cl_g.dkg_ncyl + cl->cl_g.dkg_acyl);
3099
3100 /*
3101 * The Read and Write reinstruct values may not be valid
3102 * for older disks.
3103 */
3104 cl->cl_g.dkg_read_reinstruct = labp->dkl_read_reinstruct;
3105 cl->cl_g.dkg_write_reinstruct = labp->dkl_write_reinstruct;
3106
3107 /* Fill in partition table. */
3108 #if defined(_SUNOS_VTOC_8)
3109 for (i = 0; i < NDKMAP; i++) {
3110 cl->cl_map[i].dkl_cylno = labp->dkl_map[i].dkl_cylno;
3111 cl->cl_map[i].dkl_nblk = labp->dkl_map[i].dkl_nblk;
3112 }
3113 #endif
3114 #if defined(_SUNOS_VTOC_16)
3115 vpartp = labp->dkl_vtoc.v_part;
3116 track_capacity = labp->dkl_nhead * labp->dkl_nsect;
3117
3118 /* Prevent divide by zero */
3119 if (track_capacity == 0) {
3120 if (!(flags & CMLB_SILENT))
3121 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl), CE_WARN,
3122 "Corrupt label - zero nhead or nsect value\n");
3123
3124 return (CMLB_LABEL_IS_INVALID);
3125 }
3126
3127 for (i = 0; i < NDKMAP; i++, vpartp++) {
3128 cl->cl_map[i].dkl_cylno = vpartp->p_start / track_capacity;
3129 cl->cl_map[i].dkl_nblk = vpartp->p_size;
3130 }
3131 #endif
3132
3133 /* Fill in VTOC Structure. */
3134 bcopy(&labp->dkl_vtoc, &cl->cl_vtoc, sizeof (struct dk_vtoc));
3135 #if defined(_SUNOS_VTOC_8)
3136 /*
3137 * The 8-slice vtoc does not include the ascii label; save it into
3138 * the device's soft state structure here.
3139 */
3140 bcopy(labp->dkl_asciilabel, cl->cl_asciilabel, LEN_DKL_ASCII);
3141 #endif
3142
3143 /* Now look for a valid capacity. */
3144 track_capacity = (cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect);
3145 label_capacity = (cl->cl_g.dkg_ncyl * track_capacity);
3146
3147 if (cl->cl_g.dkg_acyl) {
3148 #if defined(__i386) || defined(__amd64)
3149 /* we may have > 1 alts cylinder */
3150 label_capacity += (track_capacity * cl->cl_g.dkg_acyl);
3151 #else
3152 label_capacity += track_capacity;
3153 #endif
3154 }
3155
3156 /*
3157 * Force check here to ensure the computed capacity is valid.
3158 * If capacity is zero, it indicates an invalid label and
3159 * we should abort updating the relevant data then.
3160 */
3161 if (label_capacity == 0) {
3162 if (!(flags & CMLB_SILENT))
3163 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl), CE_WARN,
3164 "Corrupt label - no valid capacity could be "
3165 "retrieved\n");
3166
3167 return (CMLB_LABEL_IS_INVALID);
3168 }
3169
3170 /* Mark the geometry as valid. */
3171 cl->cl_f_geometry_is_valid = B_TRUE;
3172
3173 /*
3174 * if we got invalidated when mutex exit and entered again,
3175 * if blockcount different than when we came in, need to
3176 * retry from beginning of cmlb_validate_geometry.
3177 * revisit this on next phase of utilizing this for
3178 * sd.
3179 */
3180
3181 if (label_capacity <= cl->cl_blockcount) {
3182 #if defined(_SUNOS_VTOC_8)
3183 /*
3184 * We can't let this happen on drives that are subdivided
3185 * into logical disks (i.e., that have an fdisk table).
3186 * The cl_blockcount field should always hold the full media
3187 * size in sectors, period. This code would overwrite
3188 * cl_blockcount with the size of the Solaris fdisk partition.
3189 */
3190 cmlb_dbg(CMLB_ERROR, cl,
3191 "cmlb_uselabel: Label %d blocks; Drive %d blocks\n",
3192 label_capacity, cl->cl_blockcount);
3193 cl->cl_solaris_size = label_capacity;
3194
3195 #endif /* defined(_SUNOS_VTOC_8) */
3196 goto done;
3197 }
3198
3199 if (ISCD(cl)) {
3200 /* For CDROMs, we trust that the data in the label is OK. */
3201 #if defined(_SUNOS_VTOC_8)
3202 for (i = 0; i < NDKMAP; i++) {
3203 part_end = labp->dkl_nhead * labp->dkl_nsect *
3204 labp->dkl_map[i].dkl_cylno +
3205 labp->dkl_map[i].dkl_nblk - 1;
3206
3207 if ((labp->dkl_map[i].dkl_nblk) &&
3208 (part_end > cl->cl_blockcount)) {
3209 cl->cl_f_geometry_is_valid = B_FALSE;
3210 break;
3211 }
3212 }
3213 #endif
3214 #if defined(_SUNOS_VTOC_16)
3215 vpartp = &(labp->dkl_vtoc.v_part[0]);
3216 for (i = 0; i < NDKMAP; i++, vpartp++) {
3217 part_end = vpartp->p_start + vpartp->p_size;
3218 if ((vpartp->p_size > 0) &&
3219 (part_end > cl->cl_blockcount)) {
3220 cl->cl_f_geometry_is_valid = B_FALSE;
3221 break;
3222 }
3223 }
3224 #endif
3225 } else {
3226 /* label_capacity > cl->cl_blockcount */
3227 if (!(flags & CMLB_SILENT)) {
3228 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl), CE_WARN,
3229 "Corrupt label - bad geometry\n");
3230 cmlb_log(CMLB_DEVINFO(cl), CMLB_LABEL(cl), CE_CONT,
3231 "Label says %llu blocks; Drive says %llu blocks\n",
3232 label_capacity, cl->cl_blockcount);
3233 }
3234 cl->cl_f_geometry_is_valid = B_FALSE;
3235 label_error = CMLB_LABEL_IS_INVALID;
3236 }
3237
3238 done:
3239
3240 cmlb_dbg(CMLB_INFO, cl, "cmlb_uselabel: (label geometry)\n");
3241 cmlb_dbg(CMLB_INFO, cl,
3242 " ncyl: %d; acyl: %d; nhead: %d; nsect: %d\n",
3243 cl->cl_g.dkg_ncyl, cl->cl_g.dkg_acyl,
3244 cl->cl_g.dkg_nhead, cl->cl_g.dkg_nsect);
3245
3246 cmlb_dbg(CMLB_INFO, cl,
3247 " label_capacity: %d; intrlv: %d; rpm: %d\n",
3248 cl->cl_blockcount, cl->cl_g.dkg_intrlv, cl->cl_g.dkg_rpm);
3249 cmlb_dbg(CMLB_INFO, cl, " wrt_reinstr: %d; rd_reinstr: %d\n",
3250 cl->cl_g.dkg_write_reinstruct, cl->cl_g.dkg_read_reinstruct);
3251
3252 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
3253
3254 return (label_error);
3255 }
3256
3257
3258 /*
3259 * Function: cmlb_build_default_label
3260 *
3261 * Description: Generate a default label for those devices that do not have
3262 * one, e.g., new media, removable cartridges, etc..
3263 *
3264 * Context: Kernel thread only
3265 */
3266 /*ARGSUSED*/
3267 static void
3268 cmlb_build_default_label(struct cmlb_lun *cl, void *tg_cookie)
3269 {
3270 #if defined(_SUNOS_VTOC_16)
3271 uint_t phys_spc;
3272 uint_t disksize;
3273 struct dk_geom cl_g;
3274 diskaddr_t capacity;
3275 #endif
3276
3277 ASSERT(cl != NULL);
3278 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
3279
3280 #if defined(_SUNOS_VTOC_8)
3281 /*
3282 * Note: This is a legacy check for non-removable devices on VTOC_8
3283 * only. This may be a valid check for VTOC_16 as well.
3284 * Once we understand why there is this difference between SPARC and
3285 * x86 platform, we could remove this legacy check.
3286 */
3287 if (!ISREMOVABLE(cl) && !ISHOTPLUGGABLE(cl)) {
3288 return;
3289 }
3290 #endif
3291
3292 bzero(&cl->cl_g, sizeof (struct dk_geom));
3293 bzero(&cl->cl_vtoc, sizeof (struct dk_vtoc));
3294 bzero(&cl->cl_map, NDKMAP * (sizeof (struct dk_map)));
3295
3296 #if defined(_SUNOS_VTOC_8)
3297
3298 /*
3299 * It's a REMOVABLE media, therefore no label (on sparc, anyway).
3300 * But it is still necessary to set up various geometry information,
3301 * and we are doing this here.
3302 */
3303
3304 /*
3305 * For the rpm, we use the minimum for the disk. For the head, cyl,
3306 * and number of sector per track, if the capacity <= 1GB, head = 64,
3307 * sect = 32. else head = 255, sect 63 Note: the capacity should be
3308 * equal to C*H*S values. This will cause some truncation of size due
3309 * to round off errors. For CD-ROMs, this truncation can have adverse
3310 * side effects, so returning ncyl and nhead as 1. The nsect will
3311 * overflow for most of CD-ROMs as nsect is of type ushort. (4190569)
3312 */
3313 cl->cl_solaris_size = cl->cl_blockcount;
3314 if (ISCD(cl)) {
3315 tg_attribute_t tgattribute;
3316 int is_writable;
3317 /*
3318 * Preserve the old behavior for non-writable
3319 * medias. Since dkg_nsect is a ushort, it
3320 * will lose bits as cdroms have more than
3321 * 65536 sectors. So if we recalculate
3322 * capacity, it will become much shorter.
3323 * But the dkg_* information is not
3324 * used for CDROMs so it is OK. But for
3325 * Writable CDs we need this information
3326 * to be valid (for newfs say). So we
3327 * make nsect and nhead > 1 that way
3328 * nsect can still stay within ushort limit
3329 * without losing any bits.
3330 */
3331
3332 bzero(&tgattribute, sizeof (tg_attribute_t));
3333
3334 mutex_exit(CMLB_MUTEX(cl));
3335 is_writable =
3336 (DK_TG_GETATTRIBUTE(cl, &tgattribute, tg_cookie) == 0) ?
3337 tgattribute.media_is_writable : 1;
3338 mutex_enter(CMLB_MUTEX(cl));
3339
3340 if (is_writable) {
3341 cl->cl_g.dkg_nhead = 64;
3342 cl->cl_g.dkg_nsect = 32;
3343 cl->cl_g.dkg_ncyl = cl->cl_blockcount / (64 * 32);
3344 cl->cl_solaris_size = (diskaddr_t)cl->cl_g.dkg_ncyl *
3345 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect;
3346 } else {
3347 cl->cl_g.dkg_ncyl = 1;
3348 cl->cl_g.dkg_nhead = 1;
3349 cl->cl_g.dkg_nsect = cl->cl_blockcount;
3350 }
3351 } else {
3352 if (cl->cl_blockcount < 160) {
3353 /* Less than 80K */
3354 cl->cl_g.dkg_nhead = 1;
3355 cl->cl_g.dkg_ncyl = cl->cl_blockcount;
3356 cl->cl_g.dkg_nsect = 1;
3357 } else if (cl->cl_blockcount <= 0x1000) {
3358 /* unlabeled SCSI floppy device */
3359 cl->cl_g.dkg_nhead = 2;
3360 cl->cl_g.dkg_ncyl = 80;
3361 cl->cl_g.dkg_nsect = cl->cl_blockcount / (2 * 80);
3362 } else if (cl->cl_blockcount <= 0x200000) {
3363 cl->cl_g.dkg_nhead = 64;
3364 cl->cl_g.dkg_nsect = 32;
3365 cl->cl_g.dkg_ncyl = cl->cl_blockcount / (64 * 32);
3366 } else {
3367 cl->cl_g.dkg_nhead = 255;
3368
3369 cl->cl_g.dkg_nsect = ((cl->cl_blockcount +
3370 (UINT16_MAX * 255 * 63) - 1) /
3371 (UINT16_MAX * 255 * 63)) * 63;
3372
3373 if (cl->cl_g.dkg_nsect == 0)
3374 cl->cl_g.dkg_nsect = (UINT16_MAX / 63) * 63;
3375
3376 cl->cl_g.dkg_ncyl = cl->cl_blockcount /
3377 (255 * cl->cl_g.dkg_nsect);
3378 }
3379
3380 cl->cl_solaris_size =
3381 (diskaddr_t)cl->cl_g.dkg_ncyl * cl->cl_g.dkg_nhead *
3382 cl->cl_g.dkg_nsect;
3383
3384 }
3385
3386 cl->cl_g.dkg_acyl = 0;
3387 cl->cl_g.dkg_bcyl = 0;
3388 cl->cl_g.dkg_rpm = 200;
3389 cl->cl_asciilabel[0] = '\0';
3390 cl->cl_g.dkg_pcyl = cl->cl_g.dkg_ncyl;
3391
3392 cl->cl_map[0].dkl_cylno = 0;
3393 cl->cl_map[0].dkl_nblk = cl->cl_solaris_size;
3394
3395 cl->cl_map[2].dkl_cylno = 0;
3396 cl->cl_map[2].dkl_nblk = cl->cl_solaris_size;
3397
3398 #elif defined(_SUNOS_VTOC_16)
3399
3400 if (cl->cl_solaris_size == 0) {
3401 /*
3402 * Got fdisk table but no solaris entry therefore
3403 * don't create a default label
3404 */
3405 cl->cl_f_geometry_is_valid = B_TRUE;
3406 return;
3407 }
3408
3409 /*
3410 * For CDs we continue to use the physical geometry to calculate
3411 * number of cylinders. All other devices must convert the
3412 * physical geometry (cmlb_geom) to values that will fit
3413 * in a dk_geom structure.
3414 */
3415 if (ISCD(cl)) {
3416 phys_spc = cl->cl_pgeom.g_nhead * cl->cl_pgeom.g_nsect;
3417 } else {
3418 /* Convert physical geometry to disk geometry */
3419 bzero(&cl_g, sizeof (struct dk_geom));
3420
3421 /*
3422 * Refer to comments related to off-by-1 at the
3423 * header of this file.
3424 * Before calculating geometry, capacity should be
3425 * decreased by 1.
3426 */
3427
3428 if (cl->cl_alter_behavior & CMLB_OFF_BY_ONE)
3429 capacity = cl->cl_blockcount - 1;
3430 else
3431 capacity = cl->cl_blockcount;
3432
3433
3434 cmlb_convert_geometry(cl, capacity, &cl_g, tg_cookie);
3435 bcopy(&cl_g, &cl->cl_g, sizeof (cl->cl_g));
3436 phys_spc = cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect;
3437 }
3438
3439 if (phys_spc == 0)
3440 return;
3441 cl->cl_g.dkg_pcyl = cl->cl_solaris_size / phys_spc;
3442 if (cl->cl_alter_behavior & CMLB_FAKE_LABEL_ONE_PARTITION) {
3443 /* disable devid */
3444 cl->cl_g.dkg_ncyl = cl->cl_g.dkg_pcyl;
3445 disksize = cl->cl_solaris_size;
3446 } else {
3447 cl->cl_g.dkg_acyl = DK_ACYL;
3448 cl->cl_g.dkg_ncyl = cl->cl_g.dkg_pcyl - DK_ACYL;
3449 disksize = cl->cl_g.dkg_ncyl * phys_spc;
3450 }
3451
3452 if (ISCD(cl)) {
3453 /*
3454 * CD's don't use the "heads * sectors * cyls"-type of
3455 * geometry, but instead use the entire capacity of the media.
3456 */
3457 disksize = cl->cl_solaris_size;
3458 cl->cl_g.dkg_nhead = 1;
3459 cl->cl_g.dkg_nsect = 1;
3460 cl->cl_g.dkg_rpm =
3461 (cl->cl_pgeom.g_rpm == 0) ? 200 : cl->cl_pgeom.g_rpm;
3462
3463 cl->cl_vtoc.v_part[0].p_start = 0;
3464 cl->cl_vtoc.v_part[0].p_size = disksize;
3465 cl->cl_vtoc.v_part[0].p_tag = V_BACKUP;
3466 cl->cl_vtoc.v_part[0].p_flag = V_UNMNT;
3467
3468 cl->cl_map[0].dkl_cylno = 0;
3469 cl->cl_map[0].dkl_nblk = disksize;
3470 cl->cl_offset[0] = 0;
3471
3472 } else {
3473 /*
3474 * Hard disks and removable media cartridges
3475 */
3476 cl->cl_g.dkg_rpm =
3477 (cl->cl_pgeom.g_rpm == 0) ? 3600: cl->cl_pgeom.g_rpm;
3478 cl->cl_vtoc.v_sectorsz = cl->cl_sys_blocksize;
3479
3480 /* Add boot slice */
3481 cl->cl_vtoc.v_part[8].p_start = 0;
3482 cl->cl_vtoc.v_part[8].p_size = phys_spc;
3483 cl->cl_vtoc.v_part[8].p_tag = V_BOOT;
3484 cl->cl_vtoc.v_part[8].p_flag = V_UNMNT;
3485
3486 cl->cl_map[8].dkl_cylno = 0;
3487 cl->cl_map[8].dkl_nblk = phys_spc;
3488 cl->cl_offset[8] = 0;
3489
3490 if ((cl->cl_alter_behavior &
3491 CMLB_CREATE_ALTSLICE_VTOC_16_DTYPE_DIRECT) &&
3492 cl->cl_device_type == DTYPE_DIRECT) {
3493 cl->cl_vtoc.v_part[9].p_start = phys_spc;
3494 cl->cl_vtoc.v_part[9].p_size = 2 * phys_spc;
3495 cl->cl_vtoc.v_part[9].p_tag = V_ALTSCTR;
3496 cl->cl_vtoc.v_part[9].p_flag = 0;
3497
3498 cl->cl_map[9].dkl_cylno = 1;
3499 cl->cl_map[9].dkl_nblk = 2 * phys_spc;
3500 cl->cl_offset[9] = phys_spc;
3501 }
3502 }
3503
3504 cl->cl_g.dkg_apc = 0;
3505
3506 /* Add backup slice */
3507 cl->cl_vtoc.v_part[2].p_start = 0;
3508 cl->cl_vtoc.v_part[2].p_size = disksize;
3509 cl->cl_vtoc.v_part[2].p_tag = V_BACKUP;
3510 cl->cl_vtoc.v_part[2].p_flag = V_UNMNT;
3511
3512 cl->cl_map[2].dkl_cylno = 0;
3513 cl->cl_map[2].dkl_nblk = disksize;
3514 cl->cl_offset[2] = 0;
3515
3516 /*
3517 * single slice (s0) covering the entire disk
3518 */
3519 if (cl->cl_alter_behavior & CMLB_FAKE_LABEL_ONE_PARTITION) {
3520 cl->cl_vtoc.v_part[0].p_start = 0;
3521 cl->cl_vtoc.v_part[0].p_tag = V_UNASSIGNED;
3522 cl->cl_vtoc.v_part[0].p_flag = 0;
3523 cl->cl_vtoc.v_part[0].p_size = disksize;
3524 cl->cl_map[0].dkl_cylno = 0;
3525 cl->cl_map[0].dkl_nblk = disksize;
3526 cl->cl_offset[0] = 0;
3527 }
3528
3529 (void) sprintf(cl->cl_vtoc.v_asciilabel, "DEFAULT cyl %d alt %d"
3530 " hd %d sec %d", cl->cl_g.dkg_ncyl, cl->cl_g.dkg_acyl,
3531 cl->cl_g.dkg_nhead, cl->cl_g.dkg_nsect);
3532
3533 #else
3534 #error "No VTOC format defined."
3535 #endif
3536
3537 cl->cl_g.dkg_read_reinstruct = 0;
3538 cl->cl_g.dkg_write_reinstruct = 0;
3539
3540 cl->cl_g.dkg_intrlv = 1;
3541
3542 cl->cl_vtoc.v_sanity = VTOC_SANE;
3543 cl->cl_vtoc.v_nparts = V_NUMPAR;
3544 cl->cl_vtoc.v_version = V_VERSION;
3545
3546 cl->cl_f_geometry_is_valid = B_TRUE;
3547 cl->cl_label_from_media = CMLB_LABEL_UNDEF;
3548
3549 cmlb_dbg(CMLB_INFO, cl,
3550 "cmlb_build_default_label: Default label created: "
3551 "cyl: %d\tacyl: %d\tnhead: %d\tnsect: %d\tcap: %d\n",
3552 cl->cl_g.dkg_ncyl, cl->cl_g.dkg_acyl, cl->cl_g.dkg_nhead,
3553 cl->cl_g.dkg_nsect, cl->cl_blockcount);
3554 }
3555
3556
3557 #if defined(_FIRMWARE_NEEDS_FDISK)
3558 /*
3559 * Max CHS values, as they are encoded into bytes, for 1022/254/63
3560 */
3561 #define LBA_MAX_SECT (63 | ((1022 & 0x300) >> 2))
3562 #define LBA_MAX_CYL (1022 & 0xFF)
3563 #define LBA_MAX_HEAD (254)
3564
3565
3566 /*
3567 * Function: cmlb_has_max_chs_vals
3568 *
3569 * Description: Return B_TRUE if Cylinder-Head-Sector values are all at maximum.
3570 *
3571 * Arguments: fdp - ptr to CHS info
3572 *
3573 * Return Code: True or false
3574 *
3575 * Context: Any.
3576 */
3577 static boolean_t
3578 cmlb_has_max_chs_vals(struct ipart *fdp)
3579 {
3580 return ((fdp->begcyl == LBA_MAX_CYL) &&
3581 (fdp->beghead == LBA_MAX_HEAD) &&
3582 (fdp->begsect == LBA_MAX_SECT) &&
3583 (fdp->endcyl == LBA_MAX_CYL) &&
3584 (fdp->endhead == LBA_MAX_HEAD) &&
3585 (fdp->endsect == LBA_MAX_SECT));
3586 }
3587 #endif
3588
3589 /*
3590 * Function: cmlb_dkio_get_geometry
3591 *
3592 * Description: This routine is the driver entry point for handling user
3593 * requests to get the device geometry (DKIOCGGEOM).
3594 *
3595 * Arguments:
3596 * arg pointer to user provided dk_geom structure specifying
3597 * the controller's notion of the current geometry.
3598 *
3599 * flag this argument is a pass through to ddi_copyxxx()
3600 * directly from the mode argument of ioctl().
3601 *
3602 * tg_cookie cookie from target driver to be passed back to target
3603 * driver when we call back to it through tg_ops.
3604 *
3605 * Return Code: 0
3606 * EFAULT
3607 * ENXIO
3608 * EIO
3609 */
3610 static int
3611 cmlb_dkio_get_geometry(struct cmlb_lun *cl, caddr_t arg, int flag,
3612 void *tg_cookie)
3613 {
3614 struct dk_geom *tmp_geom = NULL;
3615 int rval = 0;
3616
3617 /*
3618 * cmlb_validate_geometry does not spin a disk up
3619 * if it was spcl down. We need to make sure it
3620 * is ready.
3621 */
3622 mutex_enter(CMLB_MUTEX(cl));
3623 rval = cmlb_validate_geometry(cl, B_TRUE, 0, tg_cookie);
3624 #if defined(_SUNOS_VTOC_8)
3625 if (rval == EINVAL &&
3626 cl->cl_alter_behavior & CMLB_FAKE_GEOM_LABEL_IOCTLS_VTOC8) {
3627 /*
3628 * This is to return a default label geometry even when we
3629 * do not really assume a default label for the device.
3630 * dad driver utilizes this.
3631 */
3632 if (cl->cl_blockcount <= CMLB_OLDVTOC_LIMIT) {
3633 cmlb_setup_default_geometry(cl, tg_cookie);
3634 rval = 0;
3635 }
3636 }
3637 #endif
3638 if (rval) {
3639 mutex_exit(CMLB_MUTEX(cl));
3640 return (rval);
3641 }
3642
3643 #if defined(__i386) || defined(__amd64)
3644 if (cl->cl_solaris_size == 0) {
3645 mutex_exit(CMLB_MUTEX(cl));
3646 return (EIO);
3647 }
3648 #endif
3649
3650 /*
3651 * Make a local copy of the soft state geometry to avoid some potential
3652 * race conditions associated with holding the mutex and updating the
3653 * write_reinstruct value
3654 */
3655 tmp_geom = kmem_zalloc(sizeof (struct dk_geom), KM_SLEEP);
3656 bcopy(&cl->cl_g, tmp_geom, sizeof (struct dk_geom));
3657
3658 if (tmp_geom->dkg_write_reinstruct == 0) {
3659 tmp_geom->dkg_write_reinstruct =
3660 (int)((int)(tmp_geom->dkg_nsect * tmp_geom->dkg_rpm *
3661 cmlb_rot_delay) / (int)60000);
3662 }
3663 mutex_exit(CMLB_MUTEX(cl));
3664
3665 rval = ddi_copyout(tmp_geom, (void *)arg, sizeof (struct dk_geom),
3666 flag);
3667 if (rval != 0) {
3668 rval = EFAULT;
3669 }
3670
3671 kmem_free(tmp_geom, sizeof (struct dk_geom));
3672 return (rval);
3673
3674 }
3675
3676
3677 /*
3678 * Function: cmlb_dkio_set_geometry
3679 *
3680 * Description: This routine is the driver entry point for handling user
3681 * requests to set the device geometry (DKIOCSGEOM). The actual
3682 * device geometry is not updated, just the driver "notion" of it.
3683 *
3684 * Arguments:
3685 * arg pointer to user provided dk_geom structure used to set
3686 * the controller's notion of the current geometry.
3687 *
3688 * flag this argument is a pass through to ddi_copyxxx()
3689 * directly from the mode argument of ioctl().
3690 *
3691 * tg_cookie cookie from target driver to be passed back to target
3692 * driver when we call back to it through tg_ops.
3693 *
3694 * Return Code: 0
3695 * EFAULT
3696 * ENXIO
3697 * EIO
3698 */
3699 static int
3700 cmlb_dkio_set_geometry(struct cmlb_lun *cl, caddr_t arg, int flag)
3701 {
3702 struct dk_geom *tmp_geom;
3703 struct dk_map *lp;
3704 int rval = 0;
3705 int i;
3706
3707
3708 #if defined(__i386) || defined(__amd64)
3709 if (cl->cl_solaris_size == 0) {
3710 return (EIO);
3711 }
3712 #endif
3713 /*
3714 * We need to copy the user specified geometry into local
3715 * storage and then update the softstate. We don't want to hold
3716 * the mutex and copyin directly from the user to the soft state
3717 */
3718 tmp_geom = (struct dk_geom *)
3719 kmem_zalloc(sizeof (struct dk_geom), KM_SLEEP);
3720 rval = ddi_copyin(arg, tmp_geom, sizeof (struct dk_geom), flag);
3721 if (rval != 0) {
3722 kmem_free(tmp_geom, sizeof (struct dk_geom));
3723 return (EFAULT);
3724 }
3725
3726 mutex_enter(CMLB_MUTEX(cl));
3727 bcopy(tmp_geom, &cl->cl_g, sizeof (struct dk_geom));
3728 for (i = 0; i < NDKMAP; i++) {
3729 lp = &cl->cl_map[i];
3730 cl->cl_offset[i] =
3731 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect * lp->dkl_cylno;
3732 #if defined(__i386) || defined(__amd64)
3733 cl->cl_offset[i] += cl->cl_solaris_offset;
3734 #endif
3735 }
3736 cl->cl_f_geometry_is_valid = B_FALSE;
3737 mutex_exit(CMLB_MUTEX(cl));
3738 kmem_free(tmp_geom, sizeof (struct dk_geom));
3739
3740 return (rval);
3741 }
3742
3743 /*
3744 * Function: cmlb_dkio_get_partition
3745 *
3746 * Description: This routine is the driver entry point for handling user
3747 * requests to get the partition table (DKIOCGAPART).
3748 *
3749 * Arguments:
3750 * arg pointer to user provided dk_allmap structure specifying
3751 * the controller's notion of the current partition table.
3752 *
3753 * flag this argument is a pass through to ddi_copyxxx()
3754 * directly from the mode argument of ioctl().
3755 *
3756 * tg_cookie cookie from target driver to be passed back to target
3757 * driver when we call back to it through tg_ops.
3758 *
3759 * Return Code: 0
3760 * EFAULT
3761 * ENXIO
3762 * EIO
3763 */
3764 static int
3765 cmlb_dkio_get_partition(struct cmlb_lun *cl, caddr_t arg, int flag,
3766 void *tg_cookie)
3767 {
3768 int rval = 0;
3769 int size;
3770
3771 /*
3772 * Make sure the geometry is valid before getting the partition
3773 * information.
3774 */
3775 mutex_enter(CMLB_MUTEX(cl));
3776 if ((rval = cmlb_validate_geometry(cl, B_TRUE, 0, tg_cookie)) != 0) {
3777 mutex_exit(CMLB_MUTEX(cl));
3778 return (rval);
3779 }
3780 mutex_exit(CMLB_MUTEX(cl));
3781
3782 #if defined(__i386) || defined(__amd64)
3783 if (cl->cl_solaris_size == 0) {
3784 return (EIO);
3785 }
3786 #endif
3787
3788 #ifdef _MULTI_DATAMODEL
3789 switch (ddi_model_convert_from(flag & FMODELS)) {
3790 case DDI_MODEL_ILP32: {
3791 struct dk_map32 dk_map32[NDKMAP];
3792 int i;
3793
3794 for (i = 0; i < NDKMAP; i++) {
3795 dk_map32[i].dkl_cylno = cl->cl_map[i].dkl_cylno;
3796 dk_map32[i].dkl_nblk = cl->cl_map[i].dkl_nblk;
3797 }
3798 size = NDKMAP * sizeof (struct dk_map32);
3799 rval = ddi_copyout(dk_map32, (void *)arg, size, flag);
3800 if (rval != 0) {
3801 rval = EFAULT;
3802 }
3803 break;
3804 }
3805 case DDI_MODEL_NONE:
3806 size = NDKMAP * sizeof (struct dk_map);
3807 rval = ddi_copyout(cl->cl_map, (void *)arg, size, flag);
3808 if (rval != 0) {
3809 rval = EFAULT;
3810 }
3811 break;
3812 }
3813 #else /* ! _MULTI_DATAMODEL */
3814 size = NDKMAP * sizeof (struct dk_map);
3815 rval = ddi_copyout(cl->cl_map, (void *)arg, size, flag);
3816 if (rval != 0) {
3817 rval = EFAULT;
3818 }
3819 #endif /* _MULTI_DATAMODEL */
3820 return (rval);
3821 }
3822
3823 /*
3824 * Function: cmlb_dkio_set_partition
3825 *
3826 * Description: This routine is the driver entry point for handling user
3827 * requests to set the partition table (DKIOCSAPART). The actual
3828 * device partition is not updated.
3829 *
3830 * Arguments:
3831 * arg - pointer to user provided dk_allmap structure used to set
3832 * the controller's notion of the partition table.
3833 * flag - this argument is a pass through to ddi_copyxxx()
3834 * directly from the mode argument of ioctl().
3835 *
3836 * Return Code: 0
3837 * EINVAL
3838 * EFAULT
3839 * ENXIO
3840 * EIO
3841 */
3842 static int
3843 cmlb_dkio_set_partition(struct cmlb_lun *cl, caddr_t arg, int flag)
3844 {
3845 struct dk_map dk_map[NDKMAP];
3846 struct dk_map *lp;
3847 int rval = 0;
3848 int size;
3849 int i;
3850 #if defined(_SUNOS_VTOC_16)
3851 struct dkl_partition *vp;
3852 #endif
3853
3854 /*
3855 * Set the map for all logical partitions. We lock
3856 * the priority just to make sure an interrupt doesn't
3857 * come in while the map is half updated.
3858 */
3859 _NOTE(DATA_READABLE_WITHOUT_LOCK(cmlb_lun::cl_solaris_size))
3860 mutex_enter(CMLB_MUTEX(cl));
3861
3862 if (cl->cl_blockcount > CMLB_OLDVTOC_LIMIT) {
3863 mutex_exit(CMLB_MUTEX(cl));
3864 return (ENOTSUP);
3865 }
3866 mutex_exit(CMLB_MUTEX(cl));
3867 if (cl->cl_solaris_size == 0) {
3868 return (EIO);
3869 }
3870
3871 #ifdef _MULTI_DATAMODEL
3872 switch (ddi_model_convert_from(flag & FMODELS)) {
3873 case DDI_MODEL_ILP32: {
3874 struct dk_map32 dk_map32[NDKMAP];
3875
3876 size = NDKMAP * sizeof (struct dk_map32);
3877 rval = ddi_copyin((void *)arg, dk_map32, size, flag);
3878 if (rval != 0) {
3879 return (EFAULT);
3880 }
3881 for (i = 0; i < NDKMAP; i++) {
3882 dk_map[i].dkl_cylno = dk_map32[i].dkl_cylno;
3883 dk_map[i].dkl_nblk = dk_map32[i].dkl_nblk;
3884 }
3885 break;
3886 }
3887 case DDI_MODEL_NONE:
3888 size = NDKMAP * sizeof (struct dk_map);
3889 rval = ddi_copyin((void *)arg, dk_map, size, flag);
3890 if (rval != 0) {
3891 return (EFAULT);
3892 }
3893 break;
3894 }
3895 #else /* ! _MULTI_DATAMODEL */
3896 size = NDKMAP * sizeof (struct dk_map);
3897 rval = ddi_copyin((void *)arg, dk_map, size, flag);
3898 if (rval != 0) {
3899 return (EFAULT);
3900 }
3901 #endif /* _MULTI_DATAMODEL */
3902
3903 mutex_enter(CMLB_MUTEX(cl));
3904 /* Note: The size used in this bcopy is set based upon the data model */
3905 bcopy(dk_map, cl->cl_map, size);
3906 #if defined(_SUNOS_VTOC_16)
3907 vp = (struct dkl_partition *)&(cl->cl_vtoc);
3908 #endif /* defined(_SUNOS_VTOC_16) */
3909 for (i = 0; i < NDKMAP; i++) {
3910 lp = &cl->cl_map[i];
3911 cl->cl_offset[i] =
3912 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect * lp->dkl_cylno;
3913 #if defined(_SUNOS_VTOC_16)
3914 vp->p_start = cl->cl_offset[i];
3915 vp->p_size = lp->dkl_nblk;
3916 vp++;
3917 #endif /* defined(_SUNOS_VTOC_16) */
3918 #if defined(__i386) || defined(__amd64)
3919 cl->cl_offset[i] += cl->cl_solaris_offset;
3920 #endif
3921 }
3922 mutex_exit(CMLB_MUTEX(cl));
3923 return (rval);
3924 }
3925
3926
3927 /*
3928 * Function: cmlb_dkio_get_vtoc
3929 *
3930 * Description: This routine is the driver entry point for handling user
3931 * requests to get the current volume table of contents
3932 * (DKIOCGVTOC).
3933 *
3934 * Arguments:
3935 * arg pointer to user provided vtoc structure specifying
3936 * the current vtoc.
3937 *
3938 * flag this argument is a pass through to ddi_copyxxx()
3939 * directly from the mode argument of ioctl().
3940 *
3941 * tg_cookie cookie from target driver to be passed back to target
3942 * driver when we call back to it through tg_ops.
3943 *
3944 * Return Code: 0
3945 * EFAULT
3946 * ENXIO
3947 * EIO
3948 */
3949 static int
3950 cmlb_dkio_get_vtoc(struct cmlb_lun *cl, caddr_t arg, int flag, void *tg_cookie)
3951 {
3952 #if defined(_SUNOS_VTOC_8)
3953 struct vtoc user_vtoc;
3954 #endif /* defined(_SUNOS_VTOC_8) */
3955 int rval = 0;
3956
3957 mutex_enter(CMLB_MUTEX(cl));
3958 if (cl->cl_blockcount > CMLB_OLDVTOC_LIMIT) {
3959 mutex_exit(CMLB_MUTEX(cl));
3960 return (EOVERFLOW);
3961 }
3962
3963 rval = cmlb_validate_geometry(cl, B_TRUE, 0, tg_cookie);
3964
3965 #if defined(_SUNOS_VTOC_8)
3966 if (rval == EINVAL &&
3967 (cl->cl_alter_behavior & CMLB_FAKE_GEOM_LABEL_IOCTLS_VTOC8)) {
3968 /*
3969 * This is to return a default label even when we do not
3970 * really assume a default label for the device.
3971 * dad driver utilizes this.
3972 */
3973 if (cl->cl_blockcount <= CMLB_OLDVTOC_LIMIT) {
3974 cmlb_setup_default_geometry(cl, tg_cookie);
3975 rval = 0;
3976 }
3977 }
3978 #endif
3979 if (rval) {
3980 mutex_exit(CMLB_MUTEX(cl));
3981 return (rval);
3982 }
3983
3984 #if defined(_SUNOS_VTOC_8)
3985 cmlb_build_user_vtoc(cl, &user_vtoc);
3986 mutex_exit(CMLB_MUTEX(cl));
3987
3988 #ifdef _MULTI_DATAMODEL
3989 switch (ddi_model_convert_from(flag & FMODELS)) {
3990 case DDI_MODEL_ILP32: {
3991 struct vtoc32 user_vtoc32;
3992
3993 vtoctovtoc32(user_vtoc, user_vtoc32);
3994 if (ddi_copyout(&user_vtoc32, (void *)arg,
3995 sizeof (struct vtoc32), flag)) {
3996 return (EFAULT);
3997 }
3998 break;
3999 }
4000
4001 case DDI_MODEL_NONE:
4002 if (ddi_copyout(&user_vtoc, (void *)arg,
4003 sizeof (struct vtoc), flag)) {
4004 return (EFAULT);
4005 }
4006 break;
4007 }
4008 #else /* ! _MULTI_DATAMODEL */
4009 if (ddi_copyout(&user_vtoc, (void *)arg, sizeof (struct vtoc), flag)) {
4010 return (EFAULT);
4011 }
4012 #endif /* _MULTI_DATAMODEL */
4013
4014 #elif defined(_SUNOS_VTOC_16)
4015 mutex_exit(CMLB_MUTEX(cl));
4016
4017 #ifdef _MULTI_DATAMODEL
4018 /*
4019 * The cl_vtoc structure is a "struct dk_vtoc" which is always
4020 * 32-bit to maintain compatibility with existing on-disk
4021 * structures. Thus, we need to convert the structure when copying
4022 * it out to a datamodel-dependent "struct vtoc" in a 64-bit
4023 * program. If the target is a 32-bit program, then no conversion
4024 * is necessary.
4025 */
4026 /* LINTED: logical expression always true: op "||" */
4027 ASSERT(sizeof (cl->cl_vtoc) == sizeof (struct vtoc32));
4028 switch (ddi_model_convert_from(flag & FMODELS)) {
4029 case DDI_MODEL_ILP32:
4030 if (ddi_copyout(&(cl->cl_vtoc), (void *)arg,
4031 sizeof (cl->cl_vtoc), flag)) {
4032 return (EFAULT);
4033 }
4034 break;
4035
4036 case DDI_MODEL_NONE: {
4037 struct vtoc user_vtoc;
4038
4039 vtoc32tovtoc(cl->cl_vtoc, user_vtoc);
4040 if (ddi_copyout(&user_vtoc, (void *)arg,
4041 sizeof (struct vtoc), flag)) {
4042 return (EFAULT);
4043 }
4044 break;
4045 }
4046 }
4047 #else /* ! _MULTI_DATAMODEL */
4048 if (ddi_copyout(&(cl->cl_vtoc), (void *)arg, sizeof (cl->cl_vtoc),
4049 flag)) {
4050 return (EFAULT);
4051 }
4052 #endif /* _MULTI_DATAMODEL */
4053 #else
4054 #error "No VTOC format defined."
4055 #endif
4056
4057 return (rval);
4058 }
4059
4060
4061 /*
4062 * Function: cmlb_dkio_get_extvtoc
4063 */
4064 static int
4065 cmlb_dkio_get_extvtoc(struct cmlb_lun *cl, caddr_t arg, int flag,
4066 void *tg_cookie)
4067 {
4068 struct extvtoc ext_vtoc;
4069 #if defined(_SUNOS_VTOC_8)
4070 struct vtoc user_vtoc;
4071 #endif /* defined(_SUNOS_VTOC_8) */
4072 int rval = 0;
4073
4074 bzero(&ext_vtoc, sizeof (struct extvtoc));
4075 mutex_enter(CMLB_MUTEX(cl));
4076 rval = cmlb_validate_geometry(cl, B_TRUE, 0, tg_cookie);
4077
4078 #if defined(_SUNOS_VTOC_8)
4079 if (rval == EINVAL &&
4080 (cl->cl_alter_behavior & CMLB_FAKE_GEOM_LABEL_IOCTLS_VTOC8)) {
4081 /*
4082 * This is to return a default label even when we do not
4083 * really assume a default label for the device.
4084 * dad driver utilizes this.
4085 */
4086 if (cl->cl_blockcount <= CMLB_OLDVTOC_LIMIT) {
4087 cmlb_setup_default_geometry(cl, tg_cookie);
4088 rval = 0;
4089 }
4090 }
4091 #endif
4092 if (rval) {
4093 mutex_exit(CMLB_MUTEX(cl));
4094 return (rval);
4095 }
4096
4097 #if defined(_SUNOS_VTOC_8)
4098 cmlb_build_user_vtoc(cl, &user_vtoc);
4099 mutex_exit(CMLB_MUTEX(cl));
4100
4101 /*
4102 * Checking callers data model does not make much sense here
4103 * since extvtoc will always be equivalent to 64bit vtoc.
4104 * What is important is whether the kernel is in 32 or 64 bit
4105 */
4106
4107 #ifdef _LP64
4108 if (ddi_copyout(&user_vtoc, (void *)arg,
4109 sizeof (struct extvtoc), flag)) {
4110 return (EFAULT);
4111 }
4112 #else
4113 vtoc32tovtoc(user_vtoc, ext_vtoc);
4114 if (ddi_copyout(&ext_vtoc, (void *)arg,
4115 sizeof (struct extvtoc), flag)) {
4116 return (EFAULT);
4117 }
4118 #endif
4119
4120 #elif defined(_SUNOS_VTOC_16)
4121 /*
4122 * The cl_vtoc structure is a "struct dk_vtoc" which is always
4123 * 32-bit to maintain compatibility with existing on-disk
4124 * structures. Thus, we need to convert the structure when copying
4125 * it out to extvtoc
4126 */
4127 vtoc32tovtoc(cl->cl_vtoc, ext_vtoc);
4128 mutex_exit(CMLB_MUTEX(cl));
4129
4130 if (ddi_copyout(&ext_vtoc, (void *)arg, sizeof (struct extvtoc), flag))
4131 return (EFAULT);
4132 #else
4133 #error "No VTOC format defined."
4134 #endif
4135
4136 return (rval);
4137 }
4138
4139 /*
4140 * This routine implements the DKIOCGETEFI ioctl. This ioctl is currently
4141 * used to read the GPT Partition Table Header (primary/backup), the GUID
4142 * partition Entry Array (primary/backup), and the MBR.
4143 */
4144 static int
4145 cmlb_dkio_get_efi(struct cmlb_lun *cl, caddr_t arg, int flag, void *tg_cookie)
4146 {
4147 dk_efi_t user_efi;
4148 int rval = 0;
4149 void *buffer;
4150 diskaddr_t tgt_lba;
4151
4152 if (ddi_copyin(arg, &user_efi, sizeof (dk_efi_t), flag))
4153 return (EFAULT);
4154
4155 user_efi.dki_data = (void *)(uintptr_t)user_efi.dki_data_64;
4156
4157 if (user_efi.dki_length == 0 ||
4158 user_efi.dki_length > cmlb_tg_max_efi_xfer)
4159 return (EINVAL);
4160
4161 tgt_lba = user_efi.dki_lba;
4162
4163 mutex_enter(CMLB_MUTEX(cl));
4164 if ((cmlb_check_update_blockcount(cl, tg_cookie) != 0) ||
4165 (cl->cl_tgt_blocksize == 0) ||
4166 (user_efi.dki_length % cl->cl_sys_blocksize)) {
4167 mutex_exit(CMLB_MUTEX(cl));
4168 return (EINVAL);
4169 }
4170 if (cl->cl_tgt_blocksize != cl->cl_sys_blocksize)
4171 tgt_lba = tgt_lba * cl->cl_tgt_blocksize /
4172 cl->cl_sys_blocksize;
4173 mutex_exit(CMLB_MUTEX(cl));
4174
4175 buffer = kmem_alloc(user_efi.dki_length, KM_SLEEP);
4176 rval = DK_TG_READ(cl, buffer, tgt_lba, user_efi.dki_length, tg_cookie);
4177 if (rval == 0 && ddi_copyout(buffer, user_efi.dki_data,
4178 user_efi.dki_length, flag) != 0)
4179 rval = EFAULT;
4180
4181 kmem_free(buffer, user_efi.dki_length);
4182 return (rval);
4183 }
4184
4185 #if defined(_SUNOS_VTOC_8)
4186 /*
4187 * Function: cmlb_build_user_vtoc
4188 *
4189 * Description: This routine populates a pass by reference variable with the
4190 * current volume table of contents.
4191 *
4192 * Arguments: cl - driver soft state (unit) structure
4193 * user_vtoc - pointer to vtoc structure to be populated
4194 */
4195 static void
4196 cmlb_build_user_vtoc(struct cmlb_lun *cl, struct vtoc *user_vtoc)
4197 {
4198 struct dk_map2 *lpart;
4199 struct dk_map *lmap;
4200 struct partition *vpart;
4201 uint32_t nblks;
4202 int i;
4203
4204 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
4205
4206 /*
4207 * Return vtoc structure fields in the provided VTOC area, addressed
4208 * by *vtoc.
4209 */
4210 bzero(user_vtoc, sizeof (struct vtoc));
4211 user_vtoc->v_bootinfo[0] = cl->cl_vtoc.v_bootinfo[0];
4212 user_vtoc->v_bootinfo[1] = cl->cl_vtoc.v_bootinfo[1];
4213 user_vtoc->v_bootinfo[2] = cl->cl_vtoc.v_bootinfo[2];
4214 user_vtoc->v_sanity = VTOC_SANE;
4215 user_vtoc->v_version = cl->cl_vtoc.v_version;
4216 bcopy(cl->cl_vtoc.v_volume, user_vtoc->v_volume, LEN_DKL_VVOL);
4217 user_vtoc->v_sectorsz = cl->cl_sys_blocksize;
4218 user_vtoc->v_nparts = cl->cl_vtoc.v_nparts;
4219
4220 for (i = 0; i < 10; i++)
4221 user_vtoc->v_reserved[i] = cl->cl_vtoc.v_reserved[i];
4222
4223 /*
4224 * Convert partitioning information.
4225 *
4226 * Note the conversion from starting cylinder number
4227 * to starting sector number.
4228 */
4229 lmap = cl->cl_map;
4230 lpart = (struct dk_map2 *)cl->cl_vtoc.v_part;
4231 vpart = user_vtoc->v_part;
4232
4233 nblks = cl->cl_g.dkg_nsect * cl->cl_g.dkg_nhead;
4234
4235 for (i = 0; i < V_NUMPAR; i++) {
4236 vpart->p_tag = lpart->p_tag;
4237 vpart->p_flag = lpart->p_flag;
4238 vpart->p_start = lmap->dkl_cylno * nblks;
4239 vpart->p_size = lmap->dkl_nblk;
4240 lmap++;
4241 lpart++;
4242 vpart++;
4243
4244 /* (4364927) */
4245 user_vtoc->timestamp[i] = (time_t)cl->cl_vtoc.v_timestamp[i];
4246 }
4247
4248 bcopy(cl->cl_asciilabel, user_vtoc->v_asciilabel, LEN_DKL_ASCII);
4249 }
4250 #endif
4251
4252 static int
4253 cmlb_dkio_partition(struct cmlb_lun *cl, caddr_t arg, int flag,
4254 void *tg_cookie)
4255 {
4256 struct partition64 p64;
4257 int rval = 0;
4258 uint_t nparts;
4259 efi_gpe_t *partitions;
4260 efi_gpt_t *buffer;
4261 diskaddr_t gpe_lba;
4262 int n_gpe_per_blk = 0;
4263
4264 if (ddi_copyin((const void *)arg, &p64,
4265 sizeof (struct partition64), flag)) {
4266 return (EFAULT);
4267 }
4268
4269 buffer = kmem_alloc(cl->cl_sys_blocksize, KM_SLEEP);
4270 rval = DK_TG_READ(cl, buffer, 1, cl->cl_sys_blocksize, tg_cookie);
4271 if (rval != 0)
4272 goto done_error;
4273
4274 cmlb_swap_efi_gpt(buffer);
4275
4276 if ((rval = cmlb_validate_efi(buffer)) != 0)
4277 goto done_error;
4278
4279 nparts = buffer->efi_gpt_NumberOfPartitionEntries;
4280 gpe_lba = buffer->efi_gpt_PartitionEntryLBA;
4281 if (p64.p_partno >= nparts) {
4282 /* couldn't find it */
4283 rval = ESRCH;
4284 goto done_error;
4285 }
4286 /*
4287 * Read the block that contains the requested GPE.
4288 */
4289 n_gpe_per_blk = cl->cl_sys_blocksize / sizeof (efi_gpe_t);
4290 gpe_lba += p64.p_partno / n_gpe_per_blk;
4291 rval = DK_TG_READ(cl, buffer, gpe_lba, cl->cl_sys_blocksize, tg_cookie);
4292
4293 if (rval) {
4294 goto done_error;
4295 }
4296 partitions = (efi_gpe_t *)buffer;
4297 partitions += p64.p_partno % n_gpe_per_blk;
4298
4299 /* Byte swap only the requested GPE */
4300 cmlb_swap_efi_gpe(1, partitions);
4301
4302 bcopy(&partitions->efi_gpe_PartitionTypeGUID, &p64.p_type,
4303 sizeof (struct uuid));
4304 p64.p_start = partitions->efi_gpe_StartingLBA;
4305 p64.p_size = partitions->efi_gpe_EndingLBA -
4306 p64.p_start + 1;
4307
4308 if (ddi_copyout(&p64, (void *)arg, sizeof (struct partition64), flag))
4309 rval = EFAULT;
4310
4311 done_error:
4312 kmem_free(buffer, cl->cl_sys_blocksize);
4313 return (rval);
4314 }
4315
4316
4317 /*
4318 * Function: cmlb_dkio_set_vtoc
4319 *
4320 * Description: This routine is the driver entry point for handling user
4321 * requests to set the current volume table of contents
4322 * (DKIOCSVTOC).
4323 *
4324 * Arguments:
4325 * dev the device number
4326 * arg pointer to user provided vtoc structure used to set the
4327 * current vtoc.
4328 *
4329 * flag this argument is a pass through to ddi_copyxxx()
4330 * directly from the mode argument of ioctl().
4331 *
4332 * tg_cookie cookie from target driver to be passed back to target
4333 * driver when we call back to it through tg_ops.
4334 *
4335 * Return Code: 0
4336 * EFAULT
4337 * ENXIO
4338 * EINVAL
4339 * ENOTSUP
4340 */
4341 static int
4342 cmlb_dkio_set_vtoc(struct cmlb_lun *cl, dev_t dev, caddr_t arg, int flag,
4343 void *tg_cookie)
4344 {
4345 struct vtoc user_vtoc;
4346 int shift, rval = 0;
4347 boolean_t internal;
4348
4349 internal = VOID2BOOLEAN(
4350 (cl->cl_alter_behavior & (CMLB_INTERNAL_MINOR_NODES)) != 0);
4351
4352 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
4353 shift = CMLBUNIT_FORCE_P0_SHIFT;
4354 else
4355 shift = CMLBUNIT_SHIFT;
4356
4357 #ifdef _MULTI_DATAMODEL
4358 switch (ddi_model_convert_from(flag & FMODELS)) {
4359 case DDI_MODEL_ILP32: {
4360 struct vtoc32 user_vtoc32;
4361
4362 if (ddi_copyin((const void *)arg, &user_vtoc32,
4363 sizeof (struct vtoc32), flag)) {
4364 return (EFAULT);
4365 }
4366 vtoc32tovtoc(user_vtoc32, user_vtoc);
4367 break;
4368 }
4369
4370 case DDI_MODEL_NONE:
4371 if (ddi_copyin((const void *)arg, &user_vtoc,
4372 sizeof (struct vtoc), flag)) {
4373 return (EFAULT);
4374 }
4375 break;
4376 }
4377 #else /* ! _MULTI_DATAMODEL */
4378 if (ddi_copyin((const void *)arg, &user_vtoc,
4379 sizeof (struct vtoc), flag)) {
4380 return (EFAULT);
4381 }
4382 #endif /* _MULTI_DATAMODEL */
4383
4384 mutex_enter(CMLB_MUTEX(cl));
4385
4386 if (cl->cl_blockcount > CMLB_OLDVTOC_LIMIT) {
4387 mutex_exit(CMLB_MUTEX(cl));
4388 return (EOVERFLOW);
4389 }
4390
4391 #if defined(__i386) || defined(__amd64)
4392 if (cl->cl_tgt_blocksize != cl->cl_sys_blocksize) {
4393 mutex_exit(CMLB_MUTEX(cl));
4394 return (EINVAL);
4395 }
4396 #endif
4397
4398 if (cl->cl_g.dkg_ncyl == 0) {
4399 mutex_exit(CMLB_MUTEX(cl));
4400 return (EINVAL);
4401 }
4402
4403 mutex_exit(CMLB_MUTEX(cl));
4404 cmlb_clear_efi(cl, tg_cookie);
4405 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd");
4406 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd,raw");
4407
4408 /*
4409 * cmlb_dkio_set_vtoc creates duplicate minor nodes when
4410 * relabeling an SMI disk. To avoid that we remove them
4411 * before creating.
4412 * It should be OK to remove a non-existed minor node.
4413 */
4414 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h");
4415 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h,raw");
4416
4417 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h",
4418 S_IFBLK, (CMLBUNIT(dev, shift) << shift) | WD_NODE,
4419 cl->cl_node_type, NULL, internal);
4420 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h,raw",
4421 S_IFCHR, (CMLBUNIT(dev, shift) << shift) | WD_NODE,
4422 cl->cl_node_type, NULL, internal);
4423 mutex_enter(CMLB_MUTEX(cl));
4424
4425 if ((rval = cmlb_build_label_vtoc(cl, &user_vtoc)) == 0) {
4426 if ((rval = cmlb_write_label(cl, tg_cookie)) == 0) {
4427 if (cmlb_validate_geometry(cl,
4428 B_TRUE, 0, tg_cookie) != 0) {
4429 cmlb_dbg(CMLB_ERROR, cl,
4430 "cmlb_dkio_set_vtoc: "
4431 "Failed validate geometry\n");
4432 }
4433 cl->cl_msglog_flag |= CMLB_ALLOW_2TB_WARN;
4434 }
4435 }
4436 mutex_exit(CMLB_MUTEX(cl));
4437 return (rval);
4438 }
4439
4440 /*
4441 * Function: cmlb_dkio_set_extvtoc
4442 */
4443 static int
4444 cmlb_dkio_set_extvtoc(struct cmlb_lun *cl, dev_t dev, caddr_t arg, int flag,
4445 void *tg_cookie)
4446 {
4447 int shift, rval = 0;
4448 struct vtoc user_vtoc;
4449 boolean_t internal;
4450
4451 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
4452 shift = CMLBUNIT_FORCE_P0_SHIFT;
4453 else
4454 shift = CMLBUNIT_SHIFT;
4455
4456 /*
4457 * Checking callers data model does not make much sense here
4458 * since extvtoc will always be equivalent to 64bit vtoc.
4459 * What is important is whether the kernel is in 32 or 64 bit
4460 */
4461
4462 #ifdef _LP64
4463 if (ddi_copyin((const void *)arg, &user_vtoc,
4464 sizeof (struct extvtoc), flag)) {
4465 return (EFAULT);
4466 }
4467 #else
4468 struct extvtoc user_extvtoc;
4469 if (ddi_copyin((const void *)arg, &user_extvtoc,
4470 sizeof (struct extvtoc), flag)) {
4471 return (EFAULT);
4472 }
4473
4474 vtoctovtoc32(user_extvtoc, user_vtoc);
4475 #endif
4476
4477 internal = VOID2BOOLEAN(
4478 (cl->cl_alter_behavior & (CMLB_INTERNAL_MINOR_NODES)) != 0);
4479 mutex_enter(CMLB_MUTEX(cl));
4480 #if defined(__i386) || defined(__amd64)
4481 if (cl->cl_tgt_blocksize != cl->cl_sys_blocksize) {
4482 mutex_exit(CMLB_MUTEX(cl));
4483 return (EINVAL);
4484 }
4485 #endif
4486
4487 if (cl->cl_g.dkg_ncyl == 0) {
4488 mutex_exit(CMLB_MUTEX(cl));
4489 return (EINVAL);
4490 }
4491
4492 mutex_exit(CMLB_MUTEX(cl));
4493 cmlb_clear_efi(cl, tg_cookie);
4494 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd");
4495 ddi_remove_minor_node(CMLB_DEVINFO(cl), "wd,raw");
4496 /*
4497 * cmlb_dkio_set_extvtoc creates duplicate minor nodes when
4498 * relabeling an SMI disk. To avoid that we remove them
4499 * before creating.
4500 * It should be OK to remove a non-existed minor node.
4501 */
4502 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h");
4503 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h,raw");
4504
4505 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h",
4506 S_IFBLK, (CMLBUNIT(dev, shift) << shift) | WD_NODE,
4507 cl->cl_node_type, NULL, internal);
4508 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "h,raw",
4509 S_IFCHR, (CMLBUNIT(dev, shift) << shift) | WD_NODE,
4510 cl->cl_node_type, NULL, internal);
4511
4512 mutex_enter(CMLB_MUTEX(cl));
4513
4514 if ((rval = cmlb_build_label_vtoc(cl, &user_vtoc)) == 0) {
4515 if ((rval = cmlb_write_label(cl, tg_cookie)) == 0) {
4516 if (cmlb_validate_geometry(cl,
4517 B_TRUE, 0, tg_cookie) != 0) {
4518 cmlb_dbg(CMLB_ERROR, cl,
4519 "cmlb_dkio_set_vtoc: "
4520 "Failed validate geometry\n");
4521 }
4522 }
4523 }
4524 mutex_exit(CMLB_MUTEX(cl));
4525 return (rval);
4526 }
4527
4528 /*
4529 * Function: cmlb_build_label_vtoc
4530 *
4531 * Description: This routine updates the driver soft state current volume table
4532 * of contents based on a user specified vtoc.
4533 *
4534 * Arguments: cl - driver soft state (unit) structure
4535 * user_vtoc - pointer to vtoc structure specifying vtoc to be used
4536 * to update the driver soft state.
4537 *
4538 * Return Code: 0
4539 * EINVAL
4540 */
4541 static int
4542 cmlb_build_label_vtoc(struct cmlb_lun *cl, struct vtoc *user_vtoc)
4543 {
4544 struct dk_map *lmap;
4545 struct partition *vpart;
4546 uint_t nblks;
4547 #if defined(_SUNOS_VTOC_8)
4548 int ncyl;
4549 struct dk_map2 *lpart;
4550 #endif /* defined(_SUNOS_VTOC_8) */
4551 int i;
4552
4553 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
4554
4555 /* Sanity-check the vtoc */
4556 if (user_vtoc->v_sanity != VTOC_SANE ||
4557 user_vtoc->v_sectorsz != cl->cl_sys_blocksize ||
4558 user_vtoc->v_nparts != V_NUMPAR) {
4559 cmlb_dbg(CMLB_INFO, cl,
4560 "cmlb_build_label_vtoc: vtoc not valid\n");
4561 return (EINVAL);
4562 }
4563
4564 nblks = cl->cl_g.dkg_nsect * cl->cl_g.dkg_nhead;
4565 if (nblks == 0) {
4566 cmlb_dbg(CMLB_INFO, cl,
4567 "cmlb_build_label_vtoc: geom nblks is 0\n");
4568 return (EINVAL);
4569 }
4570
4571 #if defined(_SUNOS_VTOC_8)
4572 vpart = user_vtoc->v_part;
4573 for (i = 0; i < V_NUMPAR; i++) {
4574 if (((unsigned)vpart->p_start % nblks) != 0) {
4575 cmlb_dbg(CMLB_INFO, cl,
4576 "cmlb_build_label_vtoc: p_start not multiply of"
4577 "nblks part %d p_start %d nblks %d\n", i,
4578 vpart->p_start, nblks);
4579 return (EINVAL);
4580 }
4581 ncyl = (unsigned)vpart->p_start / nblks;
4582 ncyl += (unsigned)vpart->p_size / nblks;
4583 if (((unsigned)vpart->p_size % nblks) != 0) {
4584 ncyl++;
4585 }
4586 if (ncyl > (int)cl->cl_g.dkg_ncyl) {
4587 cmlb_dbg(CMLB_INFO, cl,
4588 "cmlb_build_label_vtoc: ncyl %d > dkg_ncyl %d"
4589 "p_size %ld p_start %ld nblks %d part number %d"
4590 "tag %d\n",
4591 ncyl, cl->cl_g.dkg_ncyl, vpart->p_size,
4592 vpart->p_start, nblks,
4593 i, vpart->p_tag);
4594
4595 return (EINVAL);
4596 }
4597 vpart++;
4598 }
4599 #endif /* defined(_SUNOS_VTOC_8) */
4600
4601 /* Put appropriate vtoc structure fields into the disk label */
4602 #if defined(_SUNOS_VTOC_16)
4603 /*
4604 * The vtoc is always a 32bit data structure to maintain the
4605 * on-disk format. Convert "in place" instead of doing bcopy.
4606 */
4607 vtoctovtoc32((*user_vtoc), (*((struct vtoc32 *)&(cl->cl_vtoc))));
4608
4609 /*
4610 * in the 16-slice vtoc, starting sectors are expressed in
4611 * numbers *relative* to the start of the Solaris fdisk partition.
4612 */
4613 lmap = cl->cl_map;
4614 vpart = user_vtoc->v_part;
4615
4616 for (i = 0; i < (int)user_vtoc->v_nparts; i++, lmap++, vpart++) {
4617 lmap->dkl_cylno = (unsigned)vpart->p_start / nblks;
4618 lmap->dkl_nblk = (unsigned)vpart->p_size;
4619 }
4620
4621 #elif defined(_SUNOS_VTOC_8)
4622
4623 cl->cl_vtoc.v_bootinfo[0] = (uint32_t)user_vtoc->v_bootinfo[0];
4624 cl->cl_vtoc.v_bootinfo[1] = (uint32_t)user_vtoc->v_bootinfo[1];
4625 cl->cl_vtoc.v_bootinfo[2] = (uint32_t)user_vtoc->v_bootinfo[2];
4626
4627 cl->cl_vtoc.v_sanity = (uint32_t)user_vtoc->v_sanity;
4628 cl->cl_vtoc.v_version = (uint32_t)user_vtoc->v_version;
4629
4630 bcopy(user_vtoc->v_volume, cl->cl_vtoc.v_volume, LEN_DKL_VVOL);
4631
4632 cl->cl_vtoc.v_nparts = user_vtoc->v_nparts;
4633
4634 for (i = 0; i < 10; i++)
4635 cl->cl_vtoc.v_reserved[i] = user_vtoc->v_reserved[i];
4636
4637 /*
4638 * Note the conversion from starting sector number
4639 * to starting cylinder number.
4640 * Return error if division results in a remainder.
4641 */
4642 lmap = cl->cl_map;
4643 lpart = cl->cl_vtoc.v_part;
4644 vpart = user_vtoc->v_part;
4645
4646 for (i = 0; i < (int)user_vtoc->v_nparts; i++) {
4647 lpart->p_tag = vpart->p_tag;
4648 lpart->p_flag = vpart->p_flag;
4649 lmap->dkl_cylno = (unsigned)vpart->p_start / nblks;
4650 lmap->dkl_nblk = (unsigned)vpart->p_size;
4651
4652 lmap++;
4653 lpart++;
4654 vpart++;
4655
4656 /* (4387723) */
4657 #ifdef _LP64
4658 if (user_vtoc->timestamp[i] > TIME32_MAX) {
4659 cl->cl_vtoc.v_timestamp[i] = TIME32_MAX;
4660 } else {
4661 cl->cl_vtoc.v_timestamp[i] = user_vtoc->timestamp[i];
4662 }
4663 #else
4664 cl->cl_vtoc.v_timestamp[i] = user_vtoc->timestamp[i];
4665 #endif
4666 }
4667
4668 bcopy(user_vtoc->v_asciilabel, cl->cl_asciilabel, LEN_DKL_ASCII);
4669 #else
4670 #error "No VTOC format defined."
4671 #endif
4672 return (0);
4673 }
4674
4675 /*
4676 * Function: cmlb_clear_efi
4677 *
4678 * Description: This routine clears all EFI labels.
4679 *
4680 * Arguments:
4681 * cl driver soft state (unit) structure
4682 *
4683 * tg_cookie cookie from target driver to be passed back to target
4684 * driver when we call back to it through tg_ops.
4685 * Return Code: void
4686 */
4687 static void
4688 cmlb_clear_efi(struct cmlb_lun *cl, void *tg_cookie)
4689 {
4690 efi_gpt_t *gpt;
4691 diskaddr_t cap;
4692 int rval;
4693
4694 ASSERT(!mutex_owned(CMLB_MUTEX(cl)));
4695
4696 mutex_enter(CMLB_MUTEX(cl));
4697 cl->cl_reserved = -1;
4698 mutex_exit(CMLB_MUTEX(cl));
4699
4700 gpt = kmem_alloc(cl->cl_sys_blocksize, KM_SLEEP);
4701
4702 if (DK_TG_READ(cl, gpt, 1, cl->cl_sys_blocksize, tg_cookie) != 0) {
4703 goto done;
4704 }
4705
4706 cmlb_swap_efi_gpt(gpt);
4707 rval = cmlb_validate_efi(gpt);
4708 if (rval == 0) {
4709 /* clear primary */
4710 bzero(gpt, sizeof (efi_gpt_t));
4711 if (rval = DK_TG_WRITE(cl, gpt, 1, cl->cl_sys_blocksize,
4712 tg_cookie)) {
4713 cmlb_dbg(CMLB_INFO, cl,
4714 "cmlb_clear_efi: clear primary label failed\n");
4715 }
4716 }
4717 /* the backup */
4718 rval = DK_TG_GETCAP(cl, &cap, tg_cookie);
4719 if (rval) {
4720 goto done;
4721 }
4722
4723 if ((rval = DK_TG_READ(cl, gpt, cap - 1, cl->cl_sys_blocksize,
4724 tg_cookie)) != 0) {
4725 goto done;
4726 }
4727 cmlb_swap_efi_gpt(gpt);
4728 rval = cmlb_validate_efi(gpt);
4729 if (rval == 0) {
4730 /* clear backup */
4731 cmlb_dbg(CMLB_TRACE, cl,
4732 "cmlb_clear_efi clear backup@%lu\n", cap - 1);
4733 bzero(gpt, sizeof (efi_gpt_t));
4734 if ((rval = DK_TG_WRITE(cl, gpt, cap - 1, cl->cl_sys_blocksize,
4735 tg_cookie))) {
4736 cmlb_dbg(CMLB_INFO, cl,
4737 "cmlb_clear_efi: clear backup label failed\n");
4738 }
4739 } else {
4740 /*
4741 * Refer to comments related to off-by-1 at the
4742 * header of this file
4743 */
4744 if ((rval = DK_TG_READ(cl, gpt, cap - 2,
4745 cl->cl_sys_blocksize, tg_cookie)) != 0) {
4746 goto done;
4747 }
4748 cmlb_swap_efi_gpt(gpt);
4749 rval = cmlb_validate_efi(gpt);
4750 if (rval == 0) {
4751 /* clear legacy backup EFI label */
4752 cmlb_dbg(CMLB_TRACE, cl,
4753 "cmlb_clear_efi clear legacy backup@%lu\n",
4754 cap - 2);
4755 bzero(gpt, sizeof (efi_gpt_t));
4756 if ((rval = DK_TG_WRITE(cl, gpt, cap - 2,
4757 cl->cl_sys_blocksize, tg_cookie))) {
4758 cmlb_dbg(CMLB_INFO, cl,
4759 "cmlb_clear_efi: clear legacy backup label "
4760 "failed\n");
4761 }
4762 }
4763 }
4764
4765 done:
4766 kmem_free(gpt, cl->cl_sys_blocksize);
4767 }
4768
4769 /*
4770 * Function: cmlb_set_vtoc
4771 *
4772 * Description: This routine writes data to the appropriate positions
4773 *
4774 * Arguments:
4775 * cl driver soft state (unit) structure
4776 *
4777 * dkl the data to be written
4778 *
4779 * tg_cookie cookie from target driver to be passed back to target
4780 * driver when we call back to it through tg_ops.
4781 *
4782 * Return: void
4783 */
4784 static int
4785 cmlb_set_vtoc(struct cmlb_lun *cl, struct dk_label *dkl, void *tg_cookie)
4786 {
4787 uint_t label_addr;
4788 int sec;
4789 diskaddr_t blk;
4790 int head;
4791 int cyl;
4792 int rval;
4793
4794 #if defined(__i386) || defined(__amd64)
4795 label_addr = cl->cl_solaris_offset + DK_LABEL_LOC;
4796 #else
4797 /* Write the primary label at block 0 of the solaris partition. */
4798 label_addr = 0;
4799 #endif
4800
4801 rval = DK_TG_WRITE(cl, dkl, label_addr, cl->cl_sys_blocksize,
4802 tg_cookie);
4803
4804 if (rval != 0) {
4805 return (rval);
4806 }
4807
4808 /*
4809 * Calculate where the backup labels go. They are always on
4810 * the last alternate cylinder, but some older drives put them
4811 * on head 2 instead of the last head. They are always on the
4812 * first 5 odd sectors of the appropriate track.
4813 *
4814 * We have no choice at this point, but to believe that the
4815 * disk label is valid. Use the geometry of the disk
4816 * as described in the label.
4817 */
4818 cyl = dkl->dkl_ncyl + dkl->dkl_acyl - 1;
4819 head = dkl->dkl_nhead - 1;
4820
4821 /*
4822 * Write and verify the backup labels. Make sure we don't try to
4823 * write past the last cylinder.
4824 */
4825 for (sec = 1; ((sec < 5 * 2 + 1) && (sec < dkl->dkl_nsect)); sec += 2) {
4826 blk = (diskaddr_t)(
4827 (cyl * ((dkl->dkl_nhead * dkl->dkl_nsect) - dkl->dkl_apc)) +
4828 (head * dkl->dkl_nsect) + sec);
4829 #if defined(__i386) || defined(__amd64)
4830 blk += cl->cl_solaris_offset;
4831 #endif
4832 rval = DK_TG_WRITE(cl, dkl, blk, cl->cl_sys_blocksize,
4833 tg_cookie);
4834 cmlb_dbg(CMLB_INFO, cl,
4835 "cmlb_set_vtoc: wrote backup label %llx\n", blk);
4836 if (rval != 0) {
4837 goto exit;
4838 }
4839 }
4840 exit:
4841 return (rval);
4842 }
4843
4844 /*
4845 * Function: cmlb_clear_vtoc
4846 *
4847 * Description: This routine clears out the VTOC labels.
4848 *
4849 * Arguments:
4850 * cl driver soft state (unit) structure
4851 *
4852 * tg_cookie cookie from target driver to be passed back to target
4853 * driver when we call back to it through tg_ops.
4854 *
4855 * Return: void
4856 */
4857 static void
4858 cmlb_clear_vtoc(struct cmlb_lun *cl, void *tg_cookie)
4859 {
4860 struct dk_label *dkl;
4861
4862 mutex_exit(CMLB_MUTEX(cl));
4863 dkl = kmem_zalloc(cl->cl_sys_blocksize, KM_SLEEP);
4864 mutex_enter(CMLB_MUTEX(cl));
4865 /*
4866 * cmlb_set_vtoc uses these fields in order to figure out
4867 * where to overwrite the backup labels
4868 */
4869 dkl->dkl_apc = cl->cl_g.dkg_apc;
4870 dkl->dkl_ncyl = cl->cl_g.dkg_ncyl;
4871 dkl->dkl_acyl = cl->cl_g.dkg_acyl;
4872 dkl->dkl_nhead = cl->cl_g.dkg_nhead;
4873 dkl->dkl_nsect = cl->cl_g.dkg_nsect;
4874 mutex_exit(CMLB_MUTEX(cl));
4875 (void) cmlb_set_vtoc(cl, dkl, tg_cookie);
4876 kmem_free(dkl, cl->cl_sys_blocksize);
4877
4878 mutex_enter(CMLB_MUTEX(cl));
4879 }
4880
4881 /*
4882 * Function: cmlb_write_label
4883 *
4884 * Description: This routine will validate and write the driver soft state vtoc
4885 * contents to the device.
4886 *
4887 * Arguments:
4888 * cl cmlb handle
4889 *
4890 * tg_cookie cookie from target driver to be passed back to target
4891 * driver when we call back to it through tg_ops.
4892 *
4893 *
4894 * Return Code: the code returned by cmlb_send_scsi_cmd()
4895 * 0
4896 * EINVAL
4897 * ENXIO
4898 * ENOMEM
4899 */
4900 static int
4901 cmlb_write_label(struct cmlb_lun *cl, void *tg_cookie)
4902 {
4903 struct dk_label *dkl;
4904 short sum;
4905 short *sp;
4906 int i;
4907 int rval;
4908
4909 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
4910 mutex_exit(CMLB_MUTEX(cl));
4911 dkl = kmem_zalloc(cl->cl_sys_blocksize, KM_SLEEP);
4912 mutex_enter(CMLB_MUTEX(cl));
4913
4914 bcopy(&cl->cl_vtoc, &dkl->dkl_vtoc, sizeof (struct dk_vtoc));
4915 dkl->dkl_rpm = cl->cl_g.dkg_rpm;
4916 dkl->dkl_pcyl = cl->cl_g.dkg_pcyl;
4917 dkl->dkl_apc = cl->cl_g.dkg_apc;
4918 dkl->dkl_intrlv = cl->cl_g.dkg_intrlv;
4919 dkl->dkl_ncyl = cl->cl_g.dkg_ncyl;
4920 dkl->dkl_acyl = cl->cl_g.dkg_acyl;
4921 dkl->dkl_nhead = cl->cl_g.dkg_nhead;
4922 dkl->dkl_nsect = cl->cl_g.dkg_nsect;
4923
4924 #if defined(_SUNOS_VTOC_8)
4925 dkl->dkl_obs1 = cl->cl_g.dkg_obs1;
4926 dkl->dkl_obs2 = cl->cl_g.dkg_obs2;
4927 dkl->dkl_obs3 = cl->cl_g.dkg_obs3;
4928 for (i = 0; i < NDKMAP; i++) {
4929 dkl->dkl_map[i].dkl_cylno = cl->cl_map[i].dkl_cylno;
4930 dkl->dkl_map[i].dkl_nblk = cl->cl_map[i].dkl_nblk;
4931 }
4932 bcopy(cl->cl_asciilabel, dkl->dkl_asciilabel, LEN_DKL_ASCII);
4933 #elif defined(_SUNOS_VTOC_16)
4934 dkl->dkl_skew = cl->cl_dkg_skew;
4935 #else
4936 #error "No VTOC format defined."
4937 #endif
4938
4939 dkl->dkl_magic = DKL_MAGIC;
4940 dkl->dkl_write_reinstruct = cl->cl_g.dkg_write_reinstruct;
4941 dkl->dkl_read_reinstruct = cl->cl_g.dkg_read_reinstruct;
4942
4943 /* Construct checksum for the new disk label */
4944 sum = 0;
4945 sp = (short *)dkl;
4946 i = sizeof (struct dk_label) / sizeof (short);
4947 while (i--) {
4948 sum ^= *sp++;
4949 }
4950 dkl->dkl_cksum = sum;
4951
4952 mutex_exit(CMLB_MUTEX(cl));
4953
4954 rval = cmlb_set_vtoc(cl, dkl, tg_cookie);
4955 exit:
4956 kmem_free(dkl, cl->cl_sys_blocksize);
4957 mutex_enter(CMLB_MUTEX(cl));
4958 return (rval);
4959 }
4960
4961 /*
4962 * This routine implements the DKIOCSETEFI ioctl. This ioctl is currently
4963 * used to write (or clear) the GPT Partition Table header (primary/backup)
4964 * and GUID partition Entry Array (primary/backup). It is also used to write
4965 * the Protective MBR.
4966 */
4967 static int
4968 cmlb_dkio_set_efi(struct cmlb_lun *cl, dev_t dev, caddr_t arg, int flag,
4969 void *tg_cookie)
4970 {
4971 dk_efi_t user_efi;
4972 int shift, rval = 0;
4973 void *buffer;
4974 diskaddr_t tgt_lba;
4975 boolean_t internal;
4976
4977 if (ddi_copyin(arg, &user_efi, sizeof (dk_efi_t), flag))
4978 return (EFAULT);
4979
4980 internal = VOID2BOOLEAN(
4981 (cl->cl_alter_behavior & (CMLB_INTERNAL_MINOR_NODES)) != 0);
4982
4983 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
4984 shift = CMLBUNIT_FORCE_P0_SHIFT;
4985 else
4986 shift = CMLBUNIT_SHIFT;
4987
4988 user_efi.dki_data = (void *)(uintptr_t)user_efi.dki_data_64;
4989
4990 if (user_efi.dki_length == 0 ||
4991 user_efi.dki_length > cmlb_tg_max_efi_xfer)
4992 return (EINVAL);
4993
4994 tgt_lba = user_efi.dki_lba;
4995
4996 mutex_enter(CMLB_MUTEX(cl));
4997 if ((cmlb_check_update_blockcount(cl, tg_cookie) != 0) ||
4998 (cl->cl_tgt_blocksize == 0) ||
4999 (user_efi.dki_length % cl->cl_sys_blocksize)) {
5000 mutex_exit(CMLB_MUTEX(cl));
5001 return (EINVAL);
5002 }
5003 if (cl->cl_tgt_blocksize != cl->cl_sys_blocksize)
5004 tgt_lba = tgt_lba *
5005 cl->cl_tgt_blocksize / cl->cl_sys_blocksize;
5006 mutex_exit(CMLB_MUTEX(cl));
5007
5008 buffer = kmem_alloc(user_efi.dki_length, KM_SLEEP);
5009 if (ddi_copyin(user_efi.dki_data, buffer, user_efi.dki_length, flag)) {
5010 rval = EFAULT;
5011 } else {
5012 /*
5013 * let's clear the vtoc labels and clear the softstate
5014 * vtoc.
5015 */
5016 mutex_enter(CMLB_MUTEX(cl));
5017 if (cl->cl_vtoc.v_sanity == VTOC_SANE) {
5018 cmlb_dbg(CMLB_TRACE, cl,
5019 "cmlb_dkio_set_efi: CLEAR VTOC\n");
5020 if (cl->cl_label_from_media == CMLB_LABEL_VTOC)
5021 cmlb_clear_vtoc(cl, tg_cookie);
5022 bzero(&cl->cl_vtoc, sizeof (struct dk_vtoc));
5023 mutex_exit(CMLB_MUTEX(cl));
5024 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h");
5025 ddi_remove_minor_node(CMLB_DEVINFO(cl), "h,raw");
5026 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "wd",
5027 S_IFBLK,
5028 (CMLBUNIT(dev, shift) << shift) | WD_NODE,
5029 cl->cl_node_type, NULL, internal);
5030 (void) cmlb_create_minor(CMLB_DEVINFO(cl), "wd,raw",
5031 S_IFCHR,
5032 (CMLBUNIT(dev, shift) << shift) | WD_NODE,
5033 cl->cl_node_type, NULL, internal);
5034 } else
5035 mutex_exit(CMLB_MUTEX(cl));
5036
5037 rval = DK_TG_WRITE(cl, buffer, tgt_lba, user_efi.dki_length,
5038 tg_cookie);
5039
5040 if (rval == 0) {
5041 mutex_enter(CMLB_MUTEX(cl));
5042 cl->cl_f_geometry_is_valid = B_FALSE;
5043 mutex_exit(CMLB_MUTEX(cl));
5044 }
5045 }
5046 kmem_free(buffer, user_efi.dki_length);
5047 return (rval);
5048 }
5049
5050 /*
5051 * Function: cmlb_dkio_get_mboot
5052 *
5053 * Description: This routine is the driver entry point for handling user
5054 * requests to get the current device mboot (DKIOCGMBOOT)
5055 *
5056 * Arguments:
5057 * arg pointer to user provided mboot structure specifying
5058 * the current mboot.
5059 *
5060 * flag this argument is a pass through to ddi_copyxxx()
5061 * directly from the mode argument of ioctl().
5062 *
5063 * tg_cookie cookie from target driver to be passed back to target
5064 * driver when we call back to it through tg_ops.
5065 *
5066 * Return Code: 0
5067 * EINVAL
5068 * EFAULT
5069 * ENXIO
5070 */
5071 static int
5072 cmlb_dkio_get_mboot(struct cmlb_lun *cl, caddr_t arg, int flag, void *tg_cookie)
5073 {
5074 struct mboot *mboot;
5075 int rval;
5076 size_t buffer_size;
5077
5078
5079 #if defined(_SUNOS_VTOC_8)
5080 if ((!ISREMOVABLE(cl) && !ISHOTPLUGGABLE(cl)) || (arg == NULL)) {
5081 #elif defined(_SUNOS_VTOC_16)
5082 if (arg == NULL) {
5083 #endif
5084 return (EINVAL);
5085 }
5086
5087 /*
5088 * Read the mboot block, located at absolute block 0 on the target.
5089 */
5090 buffer_size = cl->cl_sys_blocksize;
5091
5092 cmlb_dbg(CMLB_TRACE, cl,
5093 "cmlb_dkio_get_mboot: allocation size: 0x%x\n", buffer_size);
5094
5095 mboot = kmem_zalloc(buffer_size, KM_SLEEP);
5096 if ((rval = DK_TG_READ(cl, mboot, 0, buffer_size, tg_cookie)) == 0) {
5097 if (ddi_copyout(mboot, (void *)arg,
5098 sizeof (struct mboot), flag) != 0) {
5099 rval = EFAULT;
5100 }
5101 }
5102 kmem_free(mboot, buffer_size);
5103 return (rval);
5104 }
5105
5106
5107 /*
5108 * Function: cmlb_dkio_set_mboot
5109 *
5110 * Description: This routine is the driver entry point for handling user
5111 * requests to validate and set the device master boot
5112 * (DKIOCSMBOOT).
5113 *
5114 * Arguments:
5115 * arg pointer to user provided mboot structure used to set the
5116 * master boot.
5117 *
5118 * flag this argument is a pass through to ddi_copyxxx()
5119 * directly from the mode argument of ioctl().
5120 *
5121 * tg_cookie cookie from target driver to be passed back to target
5122 * driver when we call back to it through tg_ops.
5123 *
5124 * Return Code: 0
5125 * EINVAL
5126 * EFAULT
5127 * ENXIO
5128 */
5129 static int
5130 cmlb_dkio_set_mboot(struct cmlb_lun *cl, caddr_t arg, int flag, void *tg_cookie)
5131 {
5132 struct mboot *mboot = NULL;
5133 int rval;
5134 ushort_t magic;
5135
5136
5137 ASSERT(!mutex_owned(CMLB_MUTEX(cl)));
5138
5139 #if defined(_SUNOS_VTOC_8)
5140 if (!ISREMOVABLE(cl) && !ISHOTPLUGGABLE(cl)) {
5141 return (EINVAL);
5142 }
5143 #endif
5144
5145 if (arg == NULL) {
5146 return (EINVAL);
5147 }
5148
5149 mboot = kmem_zalloc(cl->cl_sys_blocksize, KM_SLEEP);
5150
5151 if (ddi_copyin((const void *)arg, mboot,
5152 cl->cl_sys_blocksize, flag) != 0) {
5153 kmem_free(mboot, cl->cl_sys_blocksize);
5154 return (EFAULT);
5155 }
5156
5157 /* Is this really a master boot record? */
5158 magic = LE_16(mboot->signature);
5159 if (magic != MBB_MAGIC) {
5160 kmem_free(mboot, cl->cl_sys_blocksize);
5161 return (EINVAL);
5162 }
5163
5164 rval = DK_TG_WRITE(cl, mboot, 0, cl->cl_sys_blocksize, tg_cookie);
5165
5166 mutex_enter(CMLB_MUTEX(cl));
5167 #if defined(__i386) || defined(__amd64)
5168 if (rval == 0) {
5169 /*
5170 * mboot has been written successfully.
5171 * update the fdisk and vtoc tables in memory
5172 */
5173 rval = cmlb_update_fdisk_and_vtoc(cl, tg_cookie);
5174 if ((!cl->cl_f_geometry_is_valid) || (rval != 0)) {
5175 mutex_exit(CMLB_MUTEX(cl));
5176 kmem_free(mboot, cl->cl_sys_blocksize);
5177 return (rval);
5178 }
5179 }
5180
5181 #ifdef __lock_lint
5182 cmlb_setup_default_geometry(cl, tg_cookie);
5183 #endif
5184
5185 #else
5186 if (rval == 0) {
5187 /*
5188 * mboot has been written successfully.
5189 * set up the default geometry and VTOC
5190 */
5191 if (cl->cl_blockcount <= CMLB_EXTVTOC_LIMIT)
5192 cmlb_setup_default_geometry(cl, tg_cookie);
5193 }
5194 #endif
5195 cl->cl_msglog_flag |= CMLB_ALLOW_2TB_WARN;
5196 mutex_exit(CMLB_MUTEX(cl));
5197 kmem_free(mboot, cl->cl_sys_blocksize);
5198 return (rval);
5199 }
5200
5201
5202 #if defined(__i386) || defined(__amd64)
5203 /*ARGSUSED*/
5204 static int
5205 cmlb_dkio_set_ext_part(struct cmlb_lun *cl, caddr_t arg, int flag,
5206 void *tg_cookie)
5207 {
5208 int fdisk_rval;
5209 diskaddr_t capacity;
5210
5211 ASSERT(!mutex_owned(CMLB_MUTEX(cl)));
5212
5213 mutex_enter(CMLB_MUTEX(cl));
5214 capacity = cl->cl_blockcount;
5215 fdisk_rval = cmlb_read_fdisk(cl, capacity, tg_cookie);
5216 if (fdisk_rval != 0) {
5217 mutex_exit(CMLB_MUTEX(cl));
5218 return (fdisk_rval);
5219 }
5220
5221 mutex_exit(CMLB_MUTEX(cl));
5222 return (fdisk_rval);
5223 }
5224 #endif
5225
5226 /*
5227 * Function: cmlb_setup_default_geometry
5228 *
5229 * Description: This local utility routine sets the default geometry as part of
5230 * setting the device mboot.
5231 *
5232 * Arguments:
5233 * cl driver soft state (unit) structure
5234 *
5235 * tg_cookie cookie from target driver to be passed back to target
5236 * driver when we call back to it through tg_ops.
5237 *
5238 *
5239 * Note: This may be redundant with cmlb_build_default_label.
5240 */
5241 static void
5242 cmlb_setup_default_geometry(struct cmlb_lun *cl, void *tg_cookie)
5243 {
5244 struct cmlb_geom pgeom;
5245 struct cmlb_geom *pgeomp = &pgeom;
5246 int ret;
5247 int geom_base_cap = 1;
5248
5249
5250 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
5251
5252 /* zero out the soft state geometry and partition table. */
5253 bzero(&cl->cl_g, sizeof (struct dk_geom));
5254 bzero(&cl->cl_vtoc, sizeof (struct dk_vtoc));
5255 bzero(cl->cl_map, NDKMAP * (sizeof (struct dk_map)));
5256
5257 /*
5258 * For the rpm, we use the minimum for the disk.
5259 * For the head, cyl and number of sector per track,
5260 * if the capacity <= 1GB, head = 64, sect = 32.
5261 * else head = 255, sect 63
5262 * Note: the capacity should be equal to C*H*S values.
5263 * This will cause some truncation of size due to
5264 * round off errors. For CD-ROMs, this truncation can
5265 * have adverse side effects, so returning ncyl and
5266 * nhead as 1. The nsect will overflow for most of
5267 * CD-ROMs as nsect is of type ushort.
5268 */
5269 if (cl->cl_alter_behavior & CMLB_FAKE_GEOM_LABEL_IOCTLS_VTOC8) {
5270 /*
5271 * newfs currently can not handle 255 ntracks for SPARC
5272 * so get the geometry from target driver instead of coming up
5273 * with one based on capacity.
5274 */
5275 mutex_exit(CMLB_MUTEX(cl));
5276 ret = DK_TG_GETPHYGEOM(cl, pgeomp, tg_cookie);
5277 mutex_enter(CMLB_MUTEX(cl));
5278
5279 if (ret == 0) {
5280 geom_base_cap = 0;
5281 } else {
5282 cmlb_dbg(CMLB_ERROR, cl,
5283 "cmlb_setup_default_geometry: "
5284 "tg_getphygeom failed %d\n", ret);
5285
5286 /* do default setting, geometry based on capacity */
5287 }
5288 }
5289
5290 if (geom_base_cap) {
5291 if (ISCD(cl)) {
5292 cl->cl_g.dkg_ncyl = 1;
5293 cl->cl_g.dkg_nhead = 1;
5294 cl->cl_g.dkg_nsect = cl->cl_blockcount;
5295 } else if (cl->cl_blockcount < 160) {
5296 /* Less than 80K */
5297 cl->cl_g.dkg_nhead = 1;
5298 cl->cl_g.dkg_ncyl = cl->cl_blockcount;
5299 cl->cl_g.dkg_nsect = 1;
5300 } else if (cl->cl_blockcount <= 0x1000) {
5301 /* Needed for unlabeled SCSI floppies. */
5302 cl->cl_g.dkg_nhead = 2;
5303 cl->cl_g.dkg_ncyl = 80;
5304 cl->cl_g.dkg_pcyl = 80;
5305 cl->cl_g.dkg_nsect = cl->cl_blockcount / (2 * 80);
5306 } else if (cl->cl_blockcount <= 0x200000) {
5307 cl->cl_g.dkg_nhead = 64;
5308 cl->cl_g.dkg_nsect = 32;
5309 cl->cl_g.dkg_ncyl = cl->cl_blockcount / (64 * 32);
5310 } else {
5311 cl->cl_g.dkg_nhead = 255;
5312
5313 cl->cl_g.dkg_nsect = ((cl->cl_blockcount +
5314 (UINT16_MAX * 255 * 63) - 1) /
5315 (UINT16_MAX * 255 * 63)) * 63;
5316
5317 if (cl->cl_g.dkg_nsect == 0)
5318 cl->cl_g.dkg_nsect = (UINT16_MAX / 63) * 63;
5319
5320 cl->cl_g.dkg_ncyl = cl->cl_blockcount /
5321 (255 * cl->cl_g.dkg_nsect);
5322 }
5323
5324 cl->cl_g.dkg_acyl = 0;
5325 cl->cl_g.dkg_bcyl = 0;
5326 cl->cl_g.dkg_intrlv = 1;
5327 cl->cl_g.dkg_rpm = 200;
5328 if (cl->cl_g.dkg_pcyl == 0)
5329 cl->cl_g.dkg_pcyl = cl->cl_g.dkg_ncyl +
5330 cl->cl_g.dkg_acyl;
5331 } else {
5332 cl->cl_g.dkg_ncyl = (short)pgeomp->g_ncyl;
5333 cl->cl_g.dkg_acyl = pgeomp->g_acyl;
5334 cl->cl_g.dkg_nhead = pgeomp->g_nhead;
5335 cl->cl_g.dkg_nsect = pgeomp->g_nsect;
5336 cl->cl_g.dkg_intrlv = pgeomp->g_intrlv;
5337 cl->cl_g.dkg_rpm = pgeomp->g_rpm;
5338 cl->cl_g.dkg_pcyl = cl->cl_g.dkg_ncyl + cl->cl_g.dkg_acyl;
5339 }
5340
5341 cl->cl_g.dkg_read_reinstruct = 0;
5342 cl->cl_g.dkg_write_reinstruct = 0;
5343 cl->cl_solaris_size = cl->cl_g.dkg_ncyl *
5344 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect;
5345
5346 cl->cl_map['a'-'a'].dkl_cylno = 0;
5347 cl->cl_map['a'-'a'].dkl_nblk = cl->cl_solaris_size;
5348
5349 cl->cl_map['c'-'a'].dkl_cylno = 0;
5350 cl->cl_map['c'-'a'].dkl_nblk = cl->cl_solaris_size;
5351
5352 cl->cl_vtoc.v_part[2].p_tag = V_BACKUP;
5353 cl->cl_vtoc.v_part[2].p_flag = V_UNMNT;
5354 cl->cl_vtoc.v_nparts = V_NUMPAR;
5355 cl->cl_vtoc.v_version = V_VERSION;
5356 (void) sprintf((char *)cl->cl_asciilabel, "DEFAULT cyl %d alt %d"
5357 " hd %d sec %d", cl->cl_g.dkg_ncyl, cl->cl_g.dkg_acyl,
5358 cl->cl_g.dkg_nhead, cl->cl_g.dkg_nsect);
5359
5360 cl->cl_f_geometry_is_valid = B_FALSE;
5361 }
5362
5363
5364 #if defined(__i386) || defined(__amd64)
5365 /*
5366 * Function: cmlb_update_fdisk_and_vtoc
5367 *
5368 * Description: This local utility routine updates the device fdisk and vtoc
5369 * as part of setting the device mboot.
5370 *
5371 * Arguments:
5372 * cl driver soft state (unit) structure
5373 *
5374 * tg_cookie cookie from target driver to be passed back to target
5375 * driver when we call back to it through tg_ops.
5376 *
5377 *
5378 * Return Code: 0 for success or errno-type return code.
5379 *
5380 * Note:x86: This looks like a duplicate of cmlb_validate_geometry(), but
5381 * these did exist separately in x86 sd.c.
5382 */
5383 static int
5384 cmlb_update_fdisk_and_vtoc(struct cmlb_lun *cl, void *tg_cookie)
5385 {
5386 int count;
5387 int label_rc = 0;
5388 int fdisk_rval;
5389 diskaddr_t capacity;
5390
5391 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
5392
5393 if (cmlb_check_update_blockcount(cl, tg_cookie) != 0)
5394 return (EINVAL);
5395
5396 /*
5397 * Set up the "whole disk" fdisk partition; this should always
5398 * exist, regardless of whether the disk contains an fdisk table
5399 * or vtoc.
5400 */
5401 cl->cl_map[P0_RAW_DISK].dkl_cylno = 0;
5402 cl->cl_map[P0_RAW_DISK].dkl_nblk = cl->cl_blockcount;
5403
5404 /*
5405 * copy the lbasize and capacity so that if they're
5406 * reset while we're not holding the CMLB_MUTEX(cl), we will
5407 * continue to use valid values after the CMLB_MUTEX(cl) is
5408 * reacquired.
5409 */
5410 capacity = cl->cl_blockcount;
5411
5412 /*
5413 * refresh the logical and physical geometry caches.
5414 * (data from mode sense format/rigid disk geometry pages,
5415 * and scsi_ifgetcap("geometry").
5416 */
5417 cmlb_resync_geom_caches(cl, capacity, tg_cookie);
5418
5419 /*
5420 * Only DIRECT ACCESS devices will have Scl labels.
5421 * CD's supposedly have a Scl label, too
5422 */
5423 if (cl->cl_device_type == DTYPE_DIRECT || ISREMOVABLE(cl)) {
5424 fdisk_rval = cmlb_read_fdisk(cl, capacity, tg_cookie);
5425 if (fdisk_rval != 0) {
5426 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
5427 return (fdisk_rval);
5428 }
5429
5430 if (cl->cl_solaris_size <= DK_LABEL_LOC) {
5431 /*
5432 * Found fdisk table but no Solaris partition entry,
5433 * so don't call cmlb_uselabel() and don't create
5434 * a default label.
5435 */
5436 label_rc = 0;
5437 cl->cl_f_geometry_is_valid = B_TRUE;
5438 goto no_solaris_partition;
5439 }
5440 } else if (capacity < 0) {
5441 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
5442 return (EINVAL);
5443 }
5444
5445 /*
5446 * For Removable media We reach here if we have found a
5447 * SOLARIS PARTITION.
5448 * If cl_f_geometry_is_valid is B_FALSE it indicates that the SOLARIS
5449 * PARTITION has changed from the previous one, hence we will setup a
5450 * default VTOC in this case.
5451 */
5452 if (!cl->cl_f_geometry_is_valid) {
5453 /* if we get here it is writable */
5454 /* we are called from SMBOOT, and after a write of fdisk */
5455 cmlb_build_default_label(cl, tg_cookie);
5456 label_rc = 0;
5457 }
5458
5459 no_solaris_partition:
5460
5461 #if defined(_SUNOS_VTOC_16)
5462 /*
5463 * If we have valid geometry, set up the remaining fdisk partitions.
5464 * Note that dkl_cylno is not used for the fdisk map entries, so
5465 * we set it to an entirely bogus value.
5466 */
5467 for (count = 0; count < FDISK_PARTS; count++) {
5468 cl->cl_map[FDISK_P1 + count].dkl_cylno = UINT32_MAX;
5469 cl->cl_map[FDISK_P1 + count].dkl_nblk =
5470 cl->cl_fmap[count].fmap_nblk;
5471 cl->cl_offset[FDISK_P1 + count] =
5472 cl->cl_fmap[count].fmap_start;
5473 }
5474 #endif
5475
5476 for (count = 0; count < NDKMAP; count++) {
5477 #if defined(_SUNOS_VTOC_8)
5478 struct dk_map *lp = &cl->cl_map[count];
5479 cl->cl_offset[count] =
5480 cl->cl_g.dkg_nhead * cl->cl_g.dkg_nsect * lp->dkl_cylno;
5481 #elif defined(_SUNOS_VTOC_16)
5482 struct dkl_partition *vp = &cl->cl_vtoc.v_part[count];
5483 cl->cl_offset[count] = vp->p_start + cl->cl_solaris_offset;
5484 #else
5485 #error "No VTOC format defined."
5486 #endif
5487 }
5488
5489 ASSERT(mutex_owned(CMLB_MUTEX(cl)));
5490 return (label_rc);
5491 }
5492 #endif
5493
5494 #if defined(__i386) || defined(__amd64)
5495 static int
5496 cmlb_dkio_get_virtgeom(struct cmlb_lun *cl, caddr_t arg, int flag)
5497 {
5498 int err = 0;
5499
5500 /* Return the driver's notion of the media's logical geometry */
5501 struct dk_geom disk_geom;
5502 struct dk_geom *dkgp = &disk_geom;
5503
5504 mutex_enter(CMLB_MUTEX(cl));
5505 /*
5506 * If there is no HBA geometry available, or
5507 * if the HBA returned us something that doesn't
5508 * really fit into an Int 13/function 8 geometry
5509 * result, just fail the ioctl. See PSARC 1998/313.
5510 */
5511 if (cl->cl_lgeom.g_nhead == 0 ||
5512 cl->cl_lgeom.g_nsect == 0 ||
5513 cl->cl_lgeom.g_ncyl > 1024) {
5514 mutex_exit(CMLB_MUTEX(cl));
5515 err = EINVAL;
5516 } else {
5517 dkgp->dkg_ncyl = cl->cl_lgeom.g_ncyl;
5518 dkgp->dkg_acyl = cl->cl_lgeom.g_acyl;
5519 dkgp->dkg_pcyl = dkgp->dkg_ncyl + dkgp->dkg_acyl;
5520 dkgp->dkg_nhead = cl->cl_lgeom.g_nhead;
5521 dkgp->dkg_nsect = cl->cl_lgeom.g_nsect;
5522
5523 mutex_exit(CMLB_MUTEX(cl));
5524 if (ddi_copyout(dkgp, (void *)arg,
5525 sizeof (struct dk_geom), flag)) {
5526 err = EFAULT;
5527 } else {
5528 err = 0;
5529 }
5530 }
5531 return (err);
5532 }
5533 #endif
5534
5535 #if defined(__i386) || defined(__amd64)
5536 static int
5537 cmlb_dkio_get_phygeom(struct cmlb_lun *cl, caddr_t arg, int flag,
5538 void *tg_cookie)
5539 {
5540 int err = 0;
5541 diskaddr_t capacity;
5542
5543
5544 /* Return the driver's notion of the media physical geometry */
5545 struct dk_geom disk_geom;
5546 struct dk_geom *dkgp = &disk_geom;
5547
5548 mutex_enter(CMLB_MUTEX(cl));
5549
5550 if (cl->cl_g.dkg_nhead != 0 &&
5551 cl->cl_g.dkg_nsect != 0) {
5552 /*
5553 * We succeeded in getting a geometry, but
5554 * right now it is being reported as just the
5555 * Solaris fdisk partition, just like for
5556 * DKIOCGGEOM. We need to change that to be
5557 * correct for the entire disk now.
5558 */
5559 bcopy(&cl->cl_g, dkgp, sizeof (*dkgp));
5560 dkgp->dkg_acyl = 0;
5561 dkgp->dkg_ncyl = cl->cl_blockcount /
5562 (dkgp->dkg_nhead * dkgp->dkg_nsect);
5563 } else {
5564 bzero(dkgp, sizeof (struct dk_geom));
5565 /*
5566 * This disk does not have a Solaris VTOC
5567 * so we must present a physical geometry
5568 * that will remain consistent regardless
5569 * of how the disk is used. This will ensure
5570 * that the geometry does not change regardless
5571 * of the fdisk partition type (ie. EFI, FAT32,
5572 * Solaris, etc).
5573 */
5574 if (ISCD(cl)) {
5575 dkgp->dkg_nhead = cl->cl_pgeom.g_nhead;
5576 dkgp->dkg_nsect = cl->cl_pgeom.g_nsect;
5577 dkgp->dkg_ncyl = cl->cl_pgeom.g_ncyl;
5578 dkgp->dkg_acyl = cl->cl_pgeom.g_acyl;
5579 } else {
5580 /*
5581 * Invalid cl_blockcount can generate invalid
5582 * dk_geom and may result in division by zero
5583 * system failure. Should make sure blockcount
5584 * is valid before using it here.
5585 */
5586 if (cl->cl_blockcount == 0) {
5587 mutex_exit(CMLB_MUTEX(cl));
5588 err = EIO;
5589 return (err);
5590 }
5591 /*
5592 * Refer to comments related to off-by-1 at the
5593 * header of this file
5594 */
5595 if (cl->cl_alter_behavior & CMLB_OFF_BY_ONE)
5596 capacity = cl->cl_blockcount - 1;
5597 else
5598 capacity = cl->cl_blockcount;
5599
5600 cmlb_convert_geometry(cl, capacity, dkgp, tg_cookie);
5601 dkgp->dkg_acyl = 0;
5602 dkgp->dkg_ncyl = capacity /
5603 (dkgp->dkg_nhead * dkgp->dkg_nsect);
5604 }
5605 }
5606 dkgp->dkg_pcyl = dkgp->dkg_ncyl + dkgp->dkg_acyl;
5607
5608 mutex_exit(CMLB_MUTEX(cl));
5609 if (ddi_copyout(dkgp, (void *)arg, sizeof (struct dk_geom), flag))
5610 err = EFAULT;
5611
5612 return (err);
5613 }
5614 #endif
5615
5616 #if defined(__i386) || defined(__amd64)
5617 static int
5618 cmlb_dkio_partinfo(struct cmlb_lun *cl, dev_t dev, caddr_t arg, int flag)
5619 {
5620 int err = 0;
5621
5622 /*
5623 * Return parameters describing the selected disk slice.
5624 * Note: this ioctl is for the intel platform only
5625 */
5626 int part;
5627
5628 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
5629 part = getminor(dev) & ((1 << CMLBUNIT_FORCE_P0_SHIFT) - 1);
5630 else
5631 part = CMLBPART(dev);
5632
5633 mutex_enter(CMLB_MUTEX(cl));
5634 /* don't check cl_solaris_size for pN */
5635 if (part < P0_RAW_DISK && cl->cl_solaris_size == 0) {
5636 err = EIO;
5637 mutex_exit(CMLB_MUTEX(cl));
5638 } else {
5639 struct part_info p;
5640
5641 p.p_start = (daddr_t)cl->cl_offset[part];
5642 p.p_length = (int)cl->cl_map[part].dkl_nblk;
5643 mutex_exit(CMLB_MUTEX(cl));
5644 #ifdef _MULTI_DATAMODEL
5645 switch (ddi_model_convert_from(flag & FMODELS)) {
5646 case DDI_MODEL_ILP32:
5647 {
5648 struct part_info32 p32;
5649
5650 p32.p_start = (daddr32_t)p.p_start;
5651 p32.p_length = p.p_length;
5652 if (ddi_copyout(&p32, (void *)arg,
5653 sizeof (p32), flag))
5654 err = EFAULT;
5655 break;
5656 }
5657
5658 case DDI_MODEL_NONE:
5659 {
5660 if (ddi_copyout(&p, (void *)arg, sizeof (p),
5661 flag))
5662 err = EFAULT;
5663 break;
5664 }
5665 }
5666 #else /* ! _MULTI_DATAMODEL */
5667 if (ddi_copyout(&p, (void *)arg, sizeof (p), flag))
5668 err = EFAULT;
5669 #endif /* _MULTI_DATAMODEL */
5670 }
5671 return (err);
5672 }
5673 static int
5674 cmlb_dkio_extpartinfo(struct cmlb_lun *cl, dev_t dev, caddr_t arg, int flag)
5675 {
5676 int err = 0;
5677
5678 /*
5679 * Return parameters describing the selected disk slice.
5680 * Note: this ioctl is for the intel platform only
5681 */
5682 int part;
5683
5684 if (cl->cl_alter_behavior & CMLB_CREATE_P0_MINOR_NODE)
5685 part = getminor(dev) & ((1 << CMLBUNIT_FORCE_P0_SHIFT) - 1);
5686 else
5687 part = CMLBPART(dev);
5688
5689 mutex_enter(CMLB_MUTEX(cl));
5690 /* don't check cl_solaris_size for pN */
5691 if (part < P0_RAW_DISK && cl->cl_solaris_size == 0) {
5692 err = EIO;
5693 mutex_exit(CMLB_MUTEX(cl));
5694 } else {
5695 struct extpart_info p;
5696
5697 p.p_start = (diskaddr_t)cl->cl_offset[part];
5698 p.p_length = (diskaddr_t)cl->cl_map[part].dkl_nblk;
5699 mutex_exit(CMLB_MUTEX(cl));
5700 if (ddi_copyout(&p, (void *)arg, sizeof (p), flag))
5701 err = EFAULT;
5702 }
5703 return (err);
5704 }
5705 #endif
5706
5707 int
5708 cmlb_prop_op(cmlb_handle_t cmlbhandle,
5709 dev_t dev, dev_info_t *dip, ddi_prop_op_t prop_op, int mod_flags,
5710 char *name, caddr_t valuep, int *lengthp, int part, void *tg_cookie)
5711 {
5712 struct cmlb_lun *cl;
5713 diskaddr_t capacity;
5714 uint32_t lbasize;
5715 enum dp { DP_NBLOCKS, DP_BLKSIZE, DP_SSD, DP_ROT } dp;
5716 int callers_length;
5717 caddr_t buffer;
5718 uint64_t nblocks64;
5719 uint_t dblk;
5720 tg_attribute_t tgattr;
5721
5722 /* Always fallback to ddi_prop_op... */
5723 cl = (struct cmlb_lun *)cmlbhandle;
5724 if (cl == NULL) {
5725 fallback: return (ddi_prop_op(dev, dip, prop_op, mod_flags,
5726 name, valuep, lengthp));
5727 }
5728
5729 /* Pick up capacity and blocksize information. */
5730 capacity = cl->cl_blockcount;
5731 if (capacity == 0)
5732 goto fallback;
5733 lbasize = cl->cl_tgt_blocksize;
5734 if (lbasize == 0)
5735 lbasize = DEV_BSIZE; /* 0 -> DEV_BSIZE units */
5736
5737 /* Check for dynamic property of whole device. */
5738 if (dev == DDI_DEV_T_ANY) {
5739 /* Fallback to ddi_prop_op if we don't understand. */
5740 if (strcmp(name, "device-nblocks") == 0)
5741 dp = DP_NBLOCKS;
5742 else if (strcmp(name, "device-blksize") == 0)
5743 dp = DP_BLKSIZE;
5744 else if (strcmp(name, "device-solid-state") == 0)
5745 dp = DP_SSD;
5746 else if (strcmp(name, "device-rotational") == 0)
5747 dp = DP_ROT;
5748 else
5749 goto fallback;
5750
5751 /* get callers length, establish length of our dynamic prop */
5752 callers_length = *lengthp;
5753 if (dp == DP_NBLOCKS)
5754 *lengthp = sizeof (uint64_t);
5755 else if ((dp == DP_BLKSIZE) || (dp == DP_SSD))
5756 *lengthp = sizeof (uint32_t);
5757
5758 /* service request for the length of the property */
5759 if (prop_op == PROP_LEN)
5760 return (DDI_PROP_SUCCESS);
5761
5762 switch (prop_op) {
5763 case PROP_LEN_AND_VAL_ALLOC:
5764 if ((buffer = kmem_alloc(*lengthp,
5765 (mod_flags & DDI_PROP_CANSLEEP) ?
5766 KM_SLEEP : KM_NOSLEEP)) == NULL)
5767 return (DDI_PROP_NO_MEMORY);
5768 *(caddr_t *)valuep = buffer; /* set callers buf */
5769 break;
5770
5771 case PROP_LEN_AND_VAL_BUF:
5772 /* the length of the prop and the request must match */
5773 if (callers_length != *lengthp)
5774 return (DDI_PROP_INVAL_ARG);
5775 buffer = valuep; /* get callers buf */
5776 break;
5777
5778 default:
5779 return (DDI_PROP_INVAL_ARG);
5780 }
5781
5782 /* transfer the value into the buffer */
5783 switch (dp) {
5784 case DP_NBLOCKS:
5785 *((uint64_t *)buffer) = capacity;
5786 break;
5787 case DP_BLKSIZE:
5788 *((uint32_t *)buffer) = lbasize;
5789 break;
5790 case DP_SSD:
5791 if (DK_TG_GETATTRIBUTE(cl, &tgattr, tg_cookie) != 0)
5792 tgattr.media_is_solid_state = B_FALSE;
5793 *((uint32_t *)buffer) =
5794 tgattr.media_is_solid_state ? 1 : 0;
5795 break;
5796 case DP_ROT:
5797 if (DK_TG_GETATTRIBUTE(cl, &tgattr, tg_cookie) != 0)
5798 tgattr.media_is_rotational = B_TRUE;
5799 *((uint32_t *)buffer) =
5800 tgattr.media_is_rotational ? 1 : 0;
5801 break;
5802 }
5803 return (DDI_PROP_SUCCESS);
5804 }
5805
5806 /*
5807 * Support dynamic size oriented properties of partition. Requests
5808 * issued under conditions where size is valid are passed to
5809 * ddi_prop_op_nblocks with the size information, otherwise the
5810 * request is passed to ddi_prop_op. Size depends on valid geometry.
5811 */
5812 if (!cmlb_is_valid(cmlbhandle))
5813 goto fallback;
5814
5815 /* Get partition nblocks value. */
5816 (void) cmlb_partinfo(cmlbhandle, part,
5817 (diskaddr_t *)&nblocks64, NULL, NULL, NULL, tg_cookie);
5818
5819 /*
5820 * Assume partition information is in sys_blocksize units, compute
5821 * divisor for size(9P) property representation.
5822 */
5823 dblk = lbasize / cl->cl_sys_blocksize;
5824
5825 /* Now let ddi_prop_op_nblocks_blksize() handle the request. */
5826 return (ddi_prop_op_nblocks_blksize(dev, dip, prop_op, mod_flags,
5827 name, valuep, lengthp, nblocks64 / dblk, lbasize));
5828 }