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02941a53 BH |
1 | /* |
2 | * osd_initiator - Main body of the osd initiator library. | |
3 | * | |
4 | * Note: The file does not contain the advanced security functionality which | |
5 | * is only needed by the security_manager's initiators. | |
6 | * | |
7 | * Copyright (C) 2008 Panasas Inc. All rights reserved. | |
8 | * | |
9 | * Authors: | |
10 | * Boaz Harrosh <bharrosh@panasas.com> | |
11 | * Benny Halevy <bhalevy@panasas.com> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License version 2 | |
15 | * | |
16 | * Redistribution and use in source and binary forms, with or without | |
17 | * modification, are permitted provided that the following conditions | |
18 | * are met: | |
19 | * | |
20 | * 1. Redistributions of source code must retain the above copyright | |
21 | * notice, this list of conditions and the following disclaimer. | |
22 | * 2. Redistributions in binary form must reproduce the above copyright | |
23 | * notice, this list of conditions and the following disclaimer in the | |
24 | * documentation and/or other materials provided with the distribution. | |
25 | * 3. Neither the name of the Panasas company nor the names of its | |
26 | * contributors may be used to endorse or promote products derived | |
27 | * from this software without specific prior written permission. | |
28 | * | |
29 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
30 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
31 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
32 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
33 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
34 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
35 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
36 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
37 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
38 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
39 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
40 | */ | |
41 | ||
42 | #include <scsi/osd_initiator.h> | |
43 | #include <scsi/osd_sec.h> | |
1b9dce94 | 44 | #include <scsi/osd_attributes.h> |
98f3aea2 BH |
45 | #include <scsi/osd_sense.h> |
46 | ||
02941a53 BH |
47 | #include <scsi/scsi_device.h> |
48 | ||
49 | #include "osd_debug.h" | |
50 | ||
4ef1a3d7 BH |
51 | #ifndef __unused |
52 | # define __unused __attribute__((unused)) | |
53 | #endif | |
54 | ||
02941a53 BH |
55 | enum { OSD_REQ_RETRIES = 1 }; |
56 | ||
57 | MODULE_AUTHOR("Boaz Harrosh <bharrosh@panasas.com>"); | |
58 | MODULE_DESCRIPTION("open-osd initiator library libosd.ko"); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
61 | static inline void build_test(void) | |
62 | { | |
63 | /* structures were not packed */ | |
64 | BUILD_BUG_ON(sizeof(struct osd_capability) != OSD_CAP_LEN); | |
c6572c98 | 65 | BUILD_BUG_ON(sizeof(struct osdv2_cdb) != OSD_TOTAL_CDB_LEN); |
02941a53 BH |
66 | BUILD_BUG_ON(sizeof(struct osdv1_cdb) != OSDv1_TOTAL_CDB_LEN); |
67 | } | |
68 | ||
1b9dce94 BH |
69 | static const char *_osd_ver_desc(struct osd_request *or) |
70 | { | |
71 | return osd_req_is_ver1(or) ? "OSD1" : "OSD2"; | |
72 | } | |
73 | ||
74 | #define ATTR_DEF_RI(id, len) ATTR_DEF(OSD_APAGE_ROOT_INFORMATION, id, len) | |
75 | ||
76 | static int _osd_print_system_info(struct osd_dev *od, void *caps) | |
77 | { | |
78 | struct osd_request *or; | |
79 | struct osd_attr get_attrs[] = { | |
80 | ATTR_DEF_RI(OSD_ATTR_RI_VENDOR_IDENTIFICATION, 8), | |
81 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_IDENTIFICATION, 16), | |
82 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_MODEL, 32), | |
83 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_REVISION_LEVEL, 4), | |
84 | ATTR_DEF_RI(OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER, 64 /*variable*/), | |
85 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_NAME, 64 /*variable*/), | |
86 | ATTR_DEF_RI(OSD_ATTR_RI_TOTAL_CAPACITY, 8), | |
87 | ATTR_DEF_RI(OSD_ATTR_RI_USED_CAPACITY, 8), | |
88 | ATTR_DEF_RI(OSD_ATTR_RI_NUMBER_OF_PARTITIONS, 8), | |
89 | ATTR_DEF_RI(OSD_ATTR_RI_CLOCK, 6), | |
90 | /* IBM-OSD-SIM Has a bug with this one put it last */ | |
91 | ATTR_DEF_RI(OSD_ATTR_RI_OSD_SYSTEM_ID, 20), | |
92 | }; | |
93 | void *iter = NULL, *pFirst; | |
94 | int nelem = ARRAY_SIZE(get_attrs), a = 0; | |
95 | int ret; | |
96 | ||
97 | or = osd_start_request(od, GFP_KERNEL); | |
98 | if (!or) | |
99 | return -ENOMEM; | |
100 | ||
101 | /* get attrs */ | |
102 | osd_req_get_attributes(or, &osd_root_object); | |
103 | osd_req_add_get_attr_list(or, get_attrs, ARRAY_SIZE(get_attrs)); | |
104 | ||
105 | ret = osd_finalize_request(or, 0, caps, NULL); | |
106 | if (ret) | |
107 | goto out; | |
108 | ||
109 | ret = osd_execute_request(or); | |
110 | if (ret) { | |
111 | OSD_ERR("Failed to detect %s => %d\n", _osd_ver_desc(or), ret); | |
112 | goto out; | |
113 | } | |
114 | ||
115 | osd_req_decode_get_attr_list(or, get_attrs, &nelem, &iter); | |
116 | ||
117 | OSD_INFO("Detected %s device\n", | |
118 | _osd_ver_desc(or)); | |
119 | ||
120 | pFirst = get_attrs[a++].val_ptr; | |
121 | OSD_INFO("OSD_ATTR_RI_VENDOR_IDENTIFICATION [%s]\n", | |
122 | (char *)pFirst); | |
123 | ||
124 | pFirst = get_attrs[a++].val_ptr; | |
125 | OSD_INFO("OSD_ATTR_RI_PRODUCT_IDENTIFICATION [%s]\n", | |
126 | (char *)pFirst); | |
127 | ||
128 | pFirst = get_attrs[a++].val_ptr; | |
129 | OSD_INFO("OSD_ATTR_RI_PRODUCT_MODEL [%s]\n", | |
130 | (char *)pFirst); | |
131 | ||
132 | pFirst = get_attrs[a++].val_ptr; | |
133 | OSD_INFO("OSD_ATTR_RI_PRODUCT_REVISION_LEVEL [%u]\n", | |
97218a14 | 134 | pFirst ? get_unaligned_be32(pFirst) : ~0U); |
1b9dce94 BH |
135 | |
136 | pFirst = get_attrs[a++].val_ptr; | |
137 | OSD_INFO("OSD_ATTR_RI_PRODUCT_SERIAL_NUMBER [%s]\n", | |
138 | (char *)pFirst); | |
139 | ||
140 | pFirst = get_attrs[a].val_ptr; | |
141 | OSD_INFO("OSD_ATTR_RI_OSD_NAME [%s]\n", (char *)pFirst); | |
142 | a++; | |
143 | ||
144 | pFirst = get_attrs[a++].val_ptr; | |
145 | OSD_INFO("OSD_ATTR_RI_TOTAL_CAPACITY [0x%llx]\n", | |
97218a14 | 146 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
1b9dce94 BH |
147 | |
148 | pFirst = get_attrs[a++].val_ptr; | |
149 | OSD_INFO("OSD_ATTR_RI_USED_CAPACITY [0x%llx]\n", | |
97218a14 | 150 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
1b9dce94 BH |
151 | |
152 | pFirst = get_attrs[a++].val_ptr; | |
153 | OSD_INFO("OSD_ATTR_RI_NUMBER_OF_PARTITIONS [%llu]\n", | |
97218a14 BH |
154 | pFirst ? _LLU(get_unaligned_be64(pFirst)) : ~0ULL); |
155 | ||
156 | if (a >= nelem) | |
157 | goto out; | |
1b9dce94 BH |
158 | |
159 | /* FIXME: Where are the time utilities */ | |
160 | pFirst = get_attrs[a++].val_ptr; | |
161 | OSD_INFO("OSD_ATTR_RI_CLOCK [0x%02x%02x%02x%02x%02x%02x]\n", | |
162 | ((char *)pFirst)[0], ((char *)pFirst)[1], | |
163 | ((char *)pFirst)[2], ((char *)pFirst)[3], | |
164 | ((char *)pFirst)[4], ((char *)pFirst)[5]); | |
165 | ||
166 | if (a < nelem) { /* IBM-OSD-SIM bug, Might not have it */ | |
167 | unsigned len = get_attrs[a].len; | |
168 | char sid_dump[32*4 + 2]; /* 2nibbles+space+ASCII */ | |
169 | ||
170 | hex_dump_to_buffer(get_attrs[a].val_ptr, len, 32, 1, | |
171 | sid_dump, sizeof(sid_dump), true); | |
172 | OSD_INFO("OSD_ATTR_RI_OSD_SYSTEM_ID(%d) [%s]\n", len, sid_dump); | |
173 | a++; | |
174 | } | |
175 | out: | |
176 | osd_end_request(or); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | int osd_auto_detect_ver(struct osd_dev *od, void *caps) | |
181 | { | |
182 | int ret; | |
183 | ||
184 | /* Auto-detect the osd version */ | |
185 | ret = _osd_print_system_info(od, caps); | |
186 | if (ret) { | |
187 | osd_dev_set_ver(od, OSD_VER1); | |
188 | OSD_DEBUG("converting to OSD1\n"); | |
189 | ret = _osd_print_system_info(od, caps); | |
190 | } | |
191 | ||
192 | return ret; | |
193 | } | |
194 | EXPORT_SYMBOL(osd_auto_detect_ver); | |
195 | ||
02941a53 BH |
196 | static unsigned _osd_req_cdb_len(struct osd_request *or) |
197 | { | |
c6572c98 | 198 | return osd_req_is_ver1(or) ? OSDv1_TOTAL_CDB_LEN : OSD_TOTAL_CDB_LEN; |
02941a53 BH |
199 | } |
200 | ||
4ef1a3d7 BH |
201 | static unsigned _osd_req_alist_elem_size(struct osd_request *or, unsigned len) |
202 | { | |
c6572c98 BH |
203 | return osd_req_is_ver1(or) ? |
204 | osdv1_attr_list_elem_size(len) : | |
205 | osdv2_attr_list_elem_size(len); | |
4ef1a3d7 BH |
206 | } |
207 | ||
208 | static unsigned _osd_req_alist_size(struct osd_request *or, void *list_head) | |
209 | { | |
c6572c98 BH |
210 | return osd_req_is_ver1(or) ? |
211 | osdv1_list_size(list_head) : | |
212 | osdv2_list_size(list_head); | |
4ef1a3d7 BH |
213 | } |
214 | ||
215 | static unsigned _osd_req_sizeof_alist_header(struct osd_request *or) | |
216 | { | |
c6572c98 BH |
217 | return osd_req_is_ver1(or) ? |
218 | sizeof(struct osdv1_attributes_list_header) : | |
219 | sizeof(struct osdv2_attributes_list_header); | |
4ef1a3d7 BH |
220 | } |
221 | ||
222 | static void _osd_req_set_alist_type(struct osd_request *or, | |
223 | void *list, int list_type) | |
224 | { | |
c6572c98 BH |
225 | if (osd_req_is_ver1(or)) { |
226 | struct osdv1_attributes_list_header *attr_list = list; | |
227 | ||
228 | memset(attr_list, 0, sizeof(*attr_list)); | |
229 | attr_list->type = list_type; | |
230 | } else { | |
231 | struct osdv2_attributes_list_header *attr_list = list; | |
4ef1a3d7 | 232 | |
c6572c98 BH |
233 | memset(attr_list, 0, sizeof(*attr_list)); |
234 | attr_list->type = list_type; | |
235 | } | |
4ef1a3d7 BH |
236 | } |
237 | ||
238 | static bool _osd_req_is_alist_type(struct osd_request *or, | |
239 | void *list, int list_type) | |
240 | { | |
241 | if (!list) | |
242 | return false; | |
243 | ||
c6572c98 | 244 | if (osd_req_is_ver1(or)) { |
4ef1a3d7 BH |
245 | struct osdv1_attributes_list_header *attr_list = list; |
246 | ||
c6572c98 BH |
247 | return attr_list->type == list_type; |
248 | } else { | |
249 | struct osdv2_attributes_list_header *attr_list = list; | |
250 | ||
4ef1a3d7 BH |
251 | return attr_list->type == list_type; |
252 | } | |
253 | } | |
254 | ||
3e086130 BH |
255 | /* This is for List-objects not Attributes-Lists */ |
256 | static void _osd_req_encode_olist(struct osd_request *or, | |
257 | struct osd_obj_id_list *list) | |
258 | { | |
259 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
260 | ||
c6572c98 BH |
261 | if (osd_req_is_ver1(or)) { |
262 | cdbh->v1.list_identifier = list->list_identifier; | |
263 | cdbh->v1.start_address = list->continuation_id; | |
264 | } else { | |
265 | cdbh->v2.list_identifier = list->list_identifier; | |
266 | cdbh->v2.start_address = list->continuation_id; | |
267 | } | |
3e086130 BH |
268 | } |
269 | ||
4ef1a3d7 BH |
270 | static osd_cdb_offset osd_req_encode_offset(struct osd_request *or, |
271 | u64 offset, unsigned *padding) | |
272 | { | |
273 | return __osd_encode_offset(offset, padding, | |
c6572c98 BH |
274 | osd_req_is_ver1(or) ? |
275 | OSDv1_OFFSET_MIN_SHIFT : OSD_OFFSET_MIN_SHIFT, | |
276 | OSD_OFFSET_MAX_SHIFT); | |
4ef1a3d7 BH |
277 | } |
278 | ||
345c435d BH |
279 | static struct osd_security_parameters * |
280 | _osd_req_sec_params(struct osd_request *or) | |
281 | { | |
282 | struct osd_cdb *ocdb = &or->cdb; | |
283 | ||
c6572c98 BH |
284 | if (osd_req_is_ver1(or)) |
285 | return &ocdb->v1.sec_params; | |
286 | else | |
287 | return &ocdb->v2.sec_params; | |
345c435d BH |
288 | } |
289 | ||
02941a53 BH |
290 | void osd_dev_init(struct osd_dev *osdd, struct scsi_device *scsi_device) |
291 | { | |
292 | memset(osdd, 0, sizeof(*osdd)); | |
293 | osdd->scsi_device = scsi_device; | |
294 | osdd->def_timeout = BLK_DEFAULT_SG_TIMEOUT; | |
c6572c98 BH |
295 | #ifdef OSD_VER1_SUPPORT |
296 | osdd->version = OSD_VER2; | |
297 | #endif | |
02941a53 BH |
298 | /* TODO: Allocate pools for osd_request attributes ... */ |
299 | } | |
300 | EXPORT_SYMBOL(osd_dev_init); | |
301 | ||
302 | void osd_dev_fini(struct osd_dev *osdd) | |
303 | { | |
304 | /* TODO: De-allocate pools */ | |
305 | ||
306 | osdd->scsi_device = NULL; | |
307 | } | |
308 | EXPORT_SYMBOL(osd_dev_fini); | |
309 | ||
310 | static struct osd_request *_osd_request_alloc(gfp_t gfp) | |
311 | { | |
312 | struct osd_request *or; | |
313 | ||
314 | /* TODO: Use mempool with one saved request */ | |
315 | or = kzalloc(sizeof(*or), gfp); | |
316 | return or; | |
317 | } | |
318 | ||
319 | static void _osd_request_free(struct osd_request *or) | |
320 | { | |
321 | kfree(or); | |
322 | } | |
323 | ||
324 | struct osd_request *osd_start_request(struct osd_dev *dev, gfp_t gfp) | |
325 | { | |
326 | struct osd_request *or; | |
327 | ||
328 | or = _osd_request_alloc(gfp); | |
329 | if (!or) | |
330 | return NULL; | |
331 | ||
332 | or->osd_dev = dev; | |
333 | or->alloc_flags = gfp; | |
334 | or->timeout = dev->def_timeout; | |
335 | or->retries = OSD_REQ_RETRIES; | |
336 | ||
337 | return or; | |
338 | } | |
339 | EXPORT_SYMBOL(osd_start_request); | |
340 | ||
341 | /* | |
342 | * If osd_finalize_request() was called but the request was not executed through | |
343 | * the block layer, then we must release BIOs. | |
344 | */ | |
345 | static void _abort_unexecuted_bios(struct request *rq) | |
346 | { | |
347 | struct bio *bio; | |
348 | ||
349 | while ((bio = rq->bio) != NULL) { | |
350 | rq->bio = bio->bi_next; | |
351 | bio_endio(bio, 0); | |
352 | } | |
353 | } | |
354 | ||
4ef1a3d7 BH |
355 | static void _osd_free_seg(struct osd_request *or __unused, |
356 | struct _osd_req_data_segment *seg) | |
357 | { | |
358 | if (!seg->buff || !seg->alloc_size) | |
359 | return; | |
360 | ||
361 | kfree(seg->buff); | |
362 | seg->buff = NULL; | |
363 | seg->alloc_size = 0; | |
364 | } | |
365 | ||
02941a53 BH |
366 | void osd_end_request(struct osd_request *or) |
367 | { | |
368 | struct request *rq = or->request; | |
369 | ||
4ef1a3d7 BH |
370 | _osd_free_seg(or, &or->set_attr); |
371 | _osd_free_seg(or, &or->enc_get_attr); | |
372 | _osd_free_seg(or, &or->get_attr); | |
373 | ||
02941a53 BH |
374 | if (rq) { |
375 | if (rq->next_rq) { | |
376 | _abort_unexecuted_bios(rq->next_rq); | |
377 | blk_put_request(rq->next_rq); | |
378 | } | |
379 | ||
380 | _abort_unexecuted_bios(rq); | |
381 | blk_put_request(rq); | |
382 | } | |
383 | _osd_request_free(or); | |
384 | } | |
385 | EXPORT_SYMBOL(osd_end_request); | |
386 | ||
387 | int osd_execute_request(struct osd_request *or) | |
388 | { | |
389 | return blk_execute_rq(or->request->q, NULL, or->request, 0); | |
390 | } | |
391 | EXPORT_SYMBOL(osd_execute_request); | |
392 | ||
393 | static void osd_request_async_done(struct request *req, int error) | |
394 | { | |
395 | struct osd_request *or = req->end_io_data; | |
396 | ||
397 | or->async_error = error; | |
398 | ||
399 | if (error) | |
400 | OSD_DEBUG("osd_request_async_done error recieved %d\n", error); | |
401 | ||
402 | if (or->async_done) | |
403 | or->async_done(or, or->async_private); | |
404 | else | |
405 | osd_end_request(or); | |
406 | } | |
407 | ||
408 | int osd_execute_request_async(struct osd_request *or, | |
409 | osd_req_done_fn *done, void *private) | |
410 | { | |
411 | or->request->end_io_data = or; | |
412 | or->async_private = private; | |
413 | or->async_done = done; | |
414 | ||
415 | blk_execute_rq_nowait(or->request->q, NULL, or->request, 0, | |
416 | osd_request_async_done); | |
417 | return 0; | |
418 | } | |
419 | EXPORT_SYMBOL(osd_execute_request_async); | |
420 | ||
4ef1a3d7 BH |
421 | u8 sg_out_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; |
422 | u8 sg_in_pad_buffer[1 << OSDv1_OFFSET_MIN_SHIFT]; | |
423 | ||
424 | static int _osd_realloc_seg(struct osd_request *or, | |
425 | struct _osd_req_data_segment *seg, unsigned max_bytes) | |
426 | { | |
427 | void *buff; | |
428 | ||
429 | if (seg->alloc_size >= max_bytes) | |
430 | return 0; | |
431 | ||
432 | buff = krealloc(seg->buff, max_bytes, or->alloc_flags); | |
433 | if (!buff) { | |
434 | OSD_ERR("Failed to Realloc %d-bytes was-%d\n", max_bytes, | |
435 | seg->alloc_size); | |
436 | return -ENOMEM; | |
437 | } | |
438 | ||
439 | memset(buff + seg->alloc_size, 0, max_bytes - seg->alloc_size); | |
440 | seg->buff = buff; | |
441 | seg->alloc_size = max_bytes; | |
442 | return 0; | |
443 | } | |
444 | ||
445 | static int _alloc_set_attr_list(struct osd_request *or, | |
446 | const struct osd_attr *oa, unsigned nelem, unsigned add_bytes) | |
447 | { | |
448 | unsigned total_bytes = add_bytes; | |
449 | ||
450 | for (; nelem; --nelem, ++oa) | |
451 | total_bytes += _osd_req_alist_elem_size(or, oa->len); | |
452 | ||
453 | OSD_DEBUG("total_bytes=%d\n", total_bytes); | |
454 | return _osd_realloc_seg(or, &or->set_attr, total_bytes); | |
455 | } | |
456 | ||
457 | static int _alloc_get_attr_desc(struct osd_request *or, unsigned max_bytes) | |
458 | { | |
459 | OSD_DEBUG("total_bytes=%d\n", max_bytes); | |
460 | return _osd_realloc_seg(or, &or->enc_get_attr, max_bytes); | |
461 | } | |
462 | ||
463 | static int _alloc_get_attr_list(struct osd_request *or) | |
464 | { | |
465 | OSD_DEBUG("total_bytes=%d\n", or->get_attr.total_bytes); | |
466 | return _osd_realloc_seg(or, &or->get_attr, or->get_attr.total_bytes); | |
467 | } | |
468 | ||
02941a53 BH |
469 | /* |
470 | * Common to all OSD commands | |
471 | */ | |
472 | ||
473 | static void _osdv1_req_encode_common(struct osd_request *or, | |
474 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
475 | { | |
476 | struct osdv1_cdb *ocdb = &or->cdb.v1; | |
477 | ||
478 | /* | |
479 | * For speed, the commands | |
480 | * OSD_ACT_PERFORM_SCSI_COMMAND , V1 0x8F7E, V2 0x8F7C | |
481 | * OSD_ACT_SCSI_TASK_MANAGEMENT , V1 0x8F7F, V2 0x8F7D | |
482 | * are not supported here. Should pass zero and set after the call | |
483 | */ | |
484 | act &= cpu_to_be16(~0x0080); /* V1 action code */ | |
485 | ||
486 | OSD_DEBUG("OSDv1 execute opcode 0x%x\n", be16_to_cpu(act)); | |
487 | ||
488 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; | |
489 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; | |
490 | ocdb->h.varlen_cdb.service_action = act; | |
491 | ||
492 | ocdb->h.partition = cpu_to_be64(obj->partition); | |
493 | ocdb->h.object = cpu_to_be64(obj->id); | |
494 | ocdb->h.v1.length = cpu_to_be64(len); | |
495 | ocdb->h.v1.start_address = cpu_to_be64(offset); | |
496 | } | |
497 | ||
c6572c98 BH |
498 | static void _osdv2_req_encode_common(struct osd_request *or, |
499 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
500 | { | |
501 | struct osdv2_cdb *ocdb = &or->cdb.v2; | |
502 | ||
503 | OSD_DEBUG("OSDv2 execute opcode 0x%x\n", be16_to_cpu(act)); | |
504 | ||
505 | ocdb->h.varlen_cdb.opcode = VARIABLE_LENGTH_CMD; | |
506 | ocdb->h.varlen_cdb.additional_cdb_length = OSD_ADDITIONAL_CDB_LENGTH; | |
507 | ocdb->h.varlen_cdb.service_action = act; | |
508 | ||
509 | ocdb->h.partition = cpu_to_be64(obj->partition); | |
510 | ocdb->h.object = cpu_to_be64(obj->id); | |
511 | ocdb->h.v2.length = cpu_to_be64(len); | |
512 | ocdb->h.v2.start_address = cpu_to_be64(offset); | |
513 | } | |
514 | ||
02941a53 BH |
515 | static void _osd_req_encode_common(struct osd_request *or, |
516 | __be16 act, const struct osd_obj_id *obj, u64 offset, u64 len) | |
517 | { | |
c6572c98 BH |
518 | if (osd_req_is_ver1(or)) |
519 | _osdv1_req_encode_common(or, act, obj, offset, len); | |
520 | else | |
521 | _osdv2_req_encode_common(or, act, obj, offset, len); | |
02941a53 BH |
522 | } |
523 | ||
524 | /* | |
525 | * Device commands | |
526 | */ | |
ae30c994 BH |
527 | /*TODO: void osd_req_set_master_seed_xchg(struct osd_request *, ...); */ |
528 | /*TODO: void osd_req_set_master_key(struct osd_request *, ...); */ | |
529 | ||
02941a53 BH |
530 | void osd_req_format(struct osd_request *or, u64 tot_capacity) |
531 | { | |
532 | _osd_req_encode_common(or, OSD_ACT_FORMAT_OSD, &osd_root_object, 0, | |
533 | tot_capacity); | |
534 | } | |
535 | EXPORT_SYMBOL(osd_req_format); | |
536 | ||
3e086130 BH |
537 | int osd_req_list_dev_partitions(struct osd_request *or, |
538 | osd_id initial_id, struct osd_obj_id_list *list, unsigned nelem) | |
539 | { | |
540 | return osd_req_list_partition_objects(or, 0, initial_id, list, nelem); | |
541 | } | |
542 | EXPORT_SYMBOL(osd_req_list_dev_partitions); | |
543 | ||
544 | static void _osd_req_encode_flush(struct osd_request *or, | |
545 | enum osd_options_flush_scope_values op) | |
546 | { | |
547 | struct osd_cdb_head *ocdb = osd_cdb_head(&or->cdb); | |
548 | ||
549 | ocdb->command_specific_options = op; | |
550 | } | |
551 | ||
552 | void osd_req_flush_obsd(struct osd_request *or, | |
553 | enum osd_options_flush_scope_values op) | |
554 | { | |
555 | _osd_req_encode_common(or, OSD_ACT_FLUSH_OSD, &osd_root_object, 0, 0); | |
556 | _osd_req_encode_flush(or, op); | |
557 | } | |
558 | EXPORT_SYMBOL(osd_req_flush_obsd); | |
559 | ||
ae30c994 BH |
560 | /*TODO: void osd_req_perform_scsi_command(struct osd_request *, |
561 | const u8 *cdb, ...); */ | |
562 | /*TODO: void osd_req_task_management(struct osd_request *, ...); */ | |
563 | ||
02941a53 BH |
564 | /* |
565 | * Partition commands | |
566 | */ | |
567 | static void _osd_req_encode_partition(struct osd_request *or, | |
568 | __be16 act, osd_id partition) | |
569 | { | |
570 | struct osd_obj_id par = { | |
571 | .partition = partition, | |
572 | .id = 0, | |
573 | }; | |
574 | ||
575 | _osd_req_encode_common(or, act, &par, 0, 0); | |
576 | } | |
577 | ||
578 | void osd_req_create_partition(struct osd_request *or, osd_id partition) | |
579 | { | |
580 | _osd_req_encode_partition(or, OSD_ACT_CREATE_PARTITION, partition); | |
581 | } | |
582 | EXPORT_SYMBOL(osd_req_create_partition); | |
583 | ||
584 | void osd_req_remove_partition(struct osd_request *or, osd_id partition) | |
585 | { | |
586 | _osd_req_encode_partition(or, OSD_ACT_REMOVE_PARTITION, partition); | |
587 | } | |
588 | EXPORT_SYMBOL(osd_req_remove_partition); | |
589 | ||
ae30c994 BH |
590 | /*TODO: void osd_req_set_partition_key(struct osd_request *, |
591 | osd_id partition, u8 new_key_id[OSD_CRYPTO_KEYID_SIZE], | |
592 | u8 seed[OSD_CRYPTO_SEED_SIZE]); */ | |
593 | ||
3e086130 BH |
594 | static int _osd_req_list_objects(struct osd_request *or, |
595 | __be16 action, const struct osd_obj_id *obj, osd_id initial_id, | |
596 | struct osd_obj_id_list *list, unsigned nelem) | |
597 | { | |
598 | struct request_queue *q = or->osd_dev->scsi_device->request_queue; | |
599 | u64 len = nelem * sizeof(osd_id) + sizeof(*list); | |
600 | struct bio *bio; | |
601 | ||
602 | _osd_req_encode_common(or, action, obj, (u64)initial_id, len); | |
603 | ||
604 | if (list->list_identifier) | |
605 | _osd_req_encode_olist(or, list); | |
606 | ||
607 | WARN_ON(or->in.bio); | |
608 | bio = bio_map_kern(q, list, len, or->alloc_flags); | |
609 | if (!bio) { | |
610 | OSD_ERR("!!! Failed to allocate list_objects BIO\n"); | |
611 | return -ENOMEM; | |
612 | } | |
613 | ||
614 | bio->bi_rw &= ~(1 << BIO_RW); | |
615 | or->in.bio = bio; | |
616 | or->in.total_bytes = bio->bi_size; | |
617 | return 0; | |
618 | } | |
619 | ||
620 | int osd_req_list_partition_collections(struct osd_request *or, | |
621 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, | |
622 | unsigned nelem) | |
623 | { | |
624 | struct osd_obj_id par = { | |
625 | .partition = partition, | |
626 | .id = 0, | |
627 | }; | |
628 | ||
629 | return osd_req_list_collection_objects(or, &par, initial_id, list, | |
630 | nelem); | |
631 | } | |
632 | EXPORT_SYMBOL(osd_req_list_partition_collections); | |
633 | ||
634 | int osd_req_list_partition_objects(struct osd_request *or, | |
635 | osd_id partition, osd_id initial_id, struct osd_obj_id_list *list, | |
636 | unsigned nelem) | |
637 | { | |
638 | struct osd_obj_id par = { | |
639 | .partition = partition, | |
640 | .id = 0, | |
641 | }; | |
642 | ||
643 | return _osd_req_list_objects(or, OSD_ACT_LIST, &par, initial_id, list, | |
644 | nelem); | |
645 | } | |
646 | EXPORT_SYMBOL(osd_req_list_partition_objects); | |
647 | ||
648 | void osd_req_flush_partition(struct osd_request *or, | |
649 | osd_id partition, enum osd_options_flush_scope_values op) | |
650 | { | |
651 | _osd_req_encode_partition(or, OSD_ACT_FLUSH_PARTITION, partition); | |
652 | _osd_req_encode_flush(or, op); | |
653 | } | |
654 | EXPORT_SYMBOL(osd_req_flush_partition); | |
655 | ||
656 | /* | |
657 | * Collection commands | |
658 | */ | |
ae30c994 BH |
659 | /*TODO: void osd_req_create_collection(struct osd_request *, |
660 | const struct osd_obj_id *); */ | |
661 | /*TODO: void osd_req_remove_collection(struct osd_request *, | |
662 | const struct osd_obj_id *); */ | |
663 | ||
3e086130 BH |
664 | int osd_req_list_collection_objects(struct osd_request *or, |
665 | const struct osd_obj_id *obj, osd_id initial_id, | |
666 | struct osd_obj_id_list *list, unsigned nelem) | |
667 | { | |
668 | return _osd_req_list_objects(or, OSD_ACT_LIST_COLLECTION, obj, | |
669 | initial_id, list, nelem); | |
670 | } | |
671 | EXPORT_SYMBOL(osd_req_list_collection_objects); | |
672 | ||
ae30c994 BH |
673 | /*TODO: void query(struct osd_request *, ...); V2 */ |
674 | ||
3e086130 BH |
675 | void osd_req_flush_collection(struct osd_request *or, |
676 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op) | |
677 | { | |
678 | _osd_req_encode_common(or, OSD_ACT_FLUSH_PARTITION, obj, 0, 0); | |
679 | _osd_req_encode_flush(or, op); | |
680 | } | |
681 | EXPORT_SYMBOL(osd_req_flush_collection); | |
682 | ||
ae30c994 BH |
683 | /*TODO: void get_member_attrs(struct osd_request *, ...); V2 */ |
684 | /*TODO: void set_member_attrs(struct osd_request *, ...); V2 */ | |
685 | ||
02941a53 BH |
686 | /* |
687 | * Object commands | |
688 | */ | |
689 | void osd_req_create_object(struct osd_request *or, struct osd_obj_id *obj) | |
690 | { | |
691 | _osd_req_encode_common(or, OSD_ACT_CREATE, obj, 0, 0); | |
692 | } | |
693 | EXPORT_SYMBOL(osd_req_create_object); | |
694 | ||
695 | void osd_req_remove_object(struct osd_request *or, struct osd_obj_id *obj) | |
696 | { | |
697 | _osd_req_encode_common(or, OSD_ACT_REMOVE, obj, 0, 0); | |
698 | } | |
699 | EXPORT_SYMBOL(osd_req_remove_object); | |
700 | ||
ae30c994 BH |
701 | |
702 | /*TODO: void osd_req_create_multi(struct osd_request *or, | |
703 | struct osd_obj_id *first, struct osd_obj_id_list *list, unsigned nelem); | |
704 | */ | |
705 | ||
02941a53 BH |
706 | void osd_req_write(struct osd_request *or, |
707 | const struct osd_obj_id *obj, struct bio *bio, u64 offset) | |
708 | { | |
709 | _osd_req_encode_common(or, OSD_ACT_WRITE, obj, offset, bio->bi_size); | |
710 | WARN_ON(or->out.bio || or->out.total_bytes); | |
711 | bio->bi_rw |= (1 << BIO_RW); | |
712 | or->out.bio = bio; | |
713 | or->out.total_bytes = bio->bi_size; | |
714 | } | |
715 | EXPORT_SYMBOL(osd_req_write); | |
716 | ||
ae30c994 BH |
717 | /*TODO: void osd_req_append(struct osd_request *, |
718 | const struct osd_obj_id *, struct bio *data_out); */ | |
719 | /*TODO: void osd_req_create_write(struct osd_request *, | |
720 | const struct osd_obj_id *, struct bio *data_out, u64 offset); */ | |
721 | /*TODO: void osd_req_clear(struct osd_request *, | |
722 | const struct osd_obj_id *, u64 offset, u64 len); */ | |
723 | /*TODO: void osd_req_punch(struct osd_request *, | |
724 | const struct osd_obj_id *, u64 offset, u64 len); V2 */ | |
725 | ||
3e086130 BH |
726 | void osd_req_flush_object(struct osd_request *or, |
727 | const struct osd_obj_id *obj, enum osd_options_flush_scope_values op, | |
728 | /*V2*/ u64 offset, /*V2*/ u64 len) | |
729 | { | |
c6572c98 BH |
730 | if (unlikely(osd_req_is_ver1(or) && (offset || len))) { |
731 | OSD_DEBUG("OSD Ver1 flush on specific range ignored\n"); | |
732 | offset = 0; | |
733 | len = 0; | |
734 | } | |
735 | ||
3e086130 BH |
736 | _osd_req_encode_common(or, OSD_ACT_FLUSH, obj, offset, len); |
737 | _osd_req_encode_flush(or, op); | |
738 | } | |
739 | EXPORT_SYMBOL(osd_req_flush_object); | |
740 | ||
02941a53 BH |
741 | void osd_req_read(struct osd_request *or, |
742 | const struct osd_obj_id *obj, struct bio *bio, u64 offset) | |
743 | { | |
744 | _osd_req_encode_common(or, OSD_ACT_READ, obj, offset, bio->bi_size); | |
745 | WARN_ON(or->in.bio || or->in.total_bytes); | |
746 | bio->bi_rw &= ~(1 << BIO_RW); | |
747 | or->in.bio = bio; | |
748 | or->in.total_bytes = bio->bi_size; | |
749 | } | |
750 | EXPORT_SYMBOL(osd_req_read); | |
751 | ||
4ef1a3d7 BH |
752 | void osd_req_get_attributes(struct osd_request *or, |
753 | const struct osd_obj_id *obj) | |
754 | { | |
755 | _osd_req_encode_common(or, OSD_ACT_GET_ATTRIBUTES, obj, 0, 0); | |
756 | } | |
757 | EXPORT_SYMBOL(osd_req_get_attributes); | |
758 | ||
759 | void osd_req_set_attributes(struct osd_request *or, | |
760 | const struct osd_obj_id *obj) | |
761 | { | |
762 | _osd_req_encode_common(or, OSD_ACT_SET_ATTRIBUTES, obj, 0, 0); | |
763 | } | |
764 | EXPORT_SYMBOL(osd_req_set_attributes); | |
765 | ||
766 | /* | |
767 | * Attributes List-mode | |
768 | */ | |
769 | ||
770 | int osd_req_add_set_attr_list(struct osd_request *or, | |
771 | const struct osd_attr *oa, unsigned nelem) | |
772 | { | |
773 | unsigned total_bytes = or->set_attr.total_bytes; | |
774 | void *attr_last; | |
775 | int ret; | |
776 | ||
777 | if (or->attributes_mode && | |
778 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { | |
779 | WARN_ON(1); | |
780 | return -EINVAL; | |
781 | } | |
782 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
783 | ||
784 | if (!total_bytes) { /* first-time: allocate and put list header */ | |
785 | total_bytes = _osd_req_sizeof_alist_header(or); | |
786 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); | |
787 | if (ret) | |
788 | return ret; | |
789 | _osd_req_set_alist_type(or, or->set_attr.buff, | |
790 | OSD_ATTR_LIST_SET_RETRIEVE); | |
791 | } | |
792 | attr_last = or->set_attr.buff + total_bytes; | |
793 | ||
794 | for (; nelem; --nelem) { | |
795 | struct osd_attributes_list_element *attr; | |
796 | unsigned elem_size = _osd_req_alist_elem_size(or, oa->len); | |
797 | ||
798 | total_bytes += elem_size; | |
799 | if (unlikely(or->set_attr.alloc_size < total_bytes)) { | |
800 | or->set_attr.total_bytes = total_bytes - elem_size; | |
801 | ret = _alloc_set_attr_list(or, oa, nelem, total_bytes); | |
802 | if (ret) | |
803 | return ret; | |
804 | attr_last = | |
805 | or->set_attr.buff + or->set_attr.total_bytes; | |
806 | } | |
807 | ||
808 | attr = attr_last; | |
809 | attr->attr_page = cpu_to_be32(oa->attr_page); | |
810 | attr->attr_id = cpu_to_be32(oa->attr_id); | |
811 | attr->attr_bytes = cpu_to_be16(oa->len); | |
812 | memcpy(attr->attr_val, oa->val_ptr, oa->len); | |
813 | ||
814 | attr_last += elem_size; | |
815 | ++oa; | |
816 | } | |
817 | ||
818 | or->set_attr.total_bytes = total_bytes; | |
819 | return 0; | |
820 | } | |
821 | EXPORT_SYMBOL(osd_req_add_set_attr_list); | |
822 | ||
823 | static int _append_map_kern(struct request *req, | |
824 | void *buff, unsigned len, gfp_t flags) | |
825 | { | |
826 | struct bio *bio; | |
827 | int ret; | |
828 | ||
829 | bio = bio_map_kern(req->q, buff, len, flags); | |
830 | if (IS_ERR(bio)) { | |
831 | OSD_ERR("Failed bio_map_kern(%p, %d) => %ld\n", buff, len, | |
832 | PTR_ERR(bio)); | |
833 | return PTR_ERR(bio); | |
834 | } | |
835 | ret = blk_rq_append_bio(req->q, req, bio); | |
836 | if (ret) { | |
837 | OSD_ERR("Failed blk_rq_append_bio(%p) => %d\n", bio, ret); | |
838 | bio_put(bio); | |
839 | } | |
840 | return ret; | |
841 | } | |
842 | ||
843 | static int _req_append_segment(struct osd_request *or, | |
844 | unsigned padding, struct _osd_req_data_segment *seg, | |
845 | struct _osd_req_data_segment *last_seg, struct _osd_io_info *io) | |
846 | { | |
847 | void *pad_buff; | |
848 | int ret; | |
849 | ||
850 | if (padding) { | |
851 | /* check if we can just add it to last buffer */ | |
852 | if (last_seg && | |
853 | (padding <= last_seg->alloc_size - last_seg->total_bytes)) | |
854 | pad_buff = last_seg->buff + last_seg->total_bytes; | |
855 | else | |
856 | pad_buff = io->pad_buff; | |
857 | ||
858 | ret = _append_map_kern(io->req, pad_buff, padding, | |
859 | or->alloc_flags); | |
860 | if (ret) | |
861 | return ret; | |
862 | io->total_bytes += padding; | |
863 | } | |
864 | ||
865 | ret = _append_map_kern(io->req, seg->buff, seg->total_bytes, | |
866 | or->alloc_flags); | |
867 | if (ret) | |
868 | return ret; | |
869 | ||
870 | io->total_bytes += seg->total_bytes; | |
871 | OSD_DEBUG("padding=%d buff=%p total_bytes=%d\n", padding, seg->buff, | |
872 | seg->total_bytes); | |
873 | return 0; | |
874 | } | |
875 | ||
876 | static int _osd_req_finalize_set_attr_list(struct osd_request *or) | |
877 | { | |
878 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
879 | unsigned padding; | |
880 | int ret; | |
881 | ||
882 | if (!or->set_attr.total_bytes) { | |
883 | cdbh->attrs_list.set_attr_offset = OSD_OFFSET_UNUSED; | |
884 | return 0; | |
885 | } | |
886 | ||
887 | cdbh->attrs_list.set_attr_bytes = cpu_to_be32(or->set_attr.total_bytes); | |
888 | cdbh->attrs_list.set_attr_offset = | |
889 | osd_req_encode_offset(or, or->out.total_bytes, &padding); | |
890 | ||
891 | ret = _req_append_segment(or, padding, &or->set_attr, | |
892 | or->out.last_seg, &or->out); | |
893 | if (ret) | |
894 | return ret; | |
895 | ||
896 | or->out.last_seg = &or->set_attr; | |
897 | return 0; | |
898 | } | |
899 | ||
900 | int osd_req_add_get_attr_list(struct osd_request *or, | |
901 | const struct osd_attr *oa, unsigned nelem) | |
902 | { | |
903 | unsigned total_bytes = or->enc_get_attr.total_bytes; | |
904 | void *attr_last; | |
905 | int ret; | |
906 | ||
907 | if (or->attributes_mode && | |
908 | or->attributes_mode != OSD_CDB_GET_SET_ATTR_LISTS) { | |
909 | WARN_ON(1); | |
910 | return -EINVAL; | |
911 | } | |
912 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
913 | ||
914 | /* first time calc data-in list header size */ | |
915 | if (!or->get_attr.total_bytes) | |
916 | or->get_attr.total_bytes = _osd_req_sizeof_alist_header(or); | |
917 | ||
918 | /* calc data-out info */ | |
919 | if (!total_bytes) { /* first-time: allocate and put list header */ | |
920 | unsigned max_bytes; | |
921 | ||
922 | total_bytes = _osd_req_sizeof_alist_header(or); | |
923 | max_bytes = total_bytes + | |
924 | nelem * sizeof(struct osd_attributes_list_attrid); | |
925 | ret = _alloc_get_attr_desc(or, max_bytes); | |
926 | if (ret) | |
927 | return ret; | |
928 | ||
929 | _osd_req_set_alist_type(or, or->enc_get_attr.buff, | |
930 | OSD_ATTR_LIST_GET); | |
931 | } | |
932 | attr_last = or->enc_get_attr.buff + total_bytes; | |
933 | ||
934 | for (; nelem; --nelem) { | |
935 | struct osd_attributes_list_attrid *attrid; | |
936 | const unsigned cur_size = sizeof(*attrid); | |
937 | ||
938 | total_bytes += cur_size; | |
939 | if (unlikely(or->enc_get_attr.alloc_size < total_bytes)) { | |
940 | or->enc_get_attr.total_bytes = total_bytes - cur_size; | |
941 | ret = _alloc_get_attr_desc(or, | |
942 | total_bytes + nelem * sizeof(*attrid)); | |
943 | if (ret) | |
944 | return ret; | |
945 | attr_last = or->enc_get_attr.buff + | |
946 | or->enc_get_attr.total_bytes; | |
947 | } | |
948 | ||
949 | attrid = attr_last; | |
950 | attrid->attr_page = cpu_to_be32(oa->attr_page); | |
951 | attrid->attr_id = cpu_to_be32(oa->attr_id); | |
952 | ||
953 | attr_last += cur_size; | |
954 | ||
955 | /* calc data-in size */ | |
956 | or->get_attr.total_bytes += | |
957 | _osd_req_alist_elem_size(or, oa->len); | |
958 | ++oa; | |
959 | } | |
960 | ||
961 | or->enc_get_attr.total_bytes = total_bytes; | |
962 | ||
963 | OSD_DEBUG( | |
964 | "get_attr.total_bytes=%u(%u) enc_get_attr.total_bytes=%u(%Zu)\n", | |
965 | or->get_attr.total_bytes, | |
966 | or->get_attr.total_bytes - _osd_req_sizeof_alist_header(or), | |
967 | or->enc_get_attr.total_bytes, | |
968 | (or->enc_get_attr.total_bytes - _osd_req_sizeof_alist_header(or)) | |
969 | / sizeof(struct osd_attributes_list_attrid)); | |
970 | ||
971 | return 0; | |
972 | } | |
973 | EXPORT_SYMBOL(osd_req_add_get_attr_list); | |
974 | ||
975 | static int _osd_req_finalize_get_attr_list(struct osd_request *or) | |
976 | { | |
977 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
978 | unsigned out_padding; | |
979 | unsigned in_padding; | |
980 | int ret; | |
981 | ||
982 | if (!or->enc_get_attr.total_bytes) { | |
983 | cdbh->attrs_list.get_attr_desc_offset = OSD_OFFSET_UNUSED; | |
984 | cdbh->attrs_list.get_attr_offset = OSD_OFFSET_UNUSED; | |
985 | return 0; | |
986 | } | |
987 | ||
988 | ret = _alloc_get_attr_list(or); | |
989 | if (ret) | |
990 | return ret; | |
991 | ||
992 | /* The out-going buffer info update */ | |
993 | OSD_DEBUG("out-going\n"); | |
994 | cdbh->attrs_list.get_attr_desc_bytes = | |
995 | cpu_to_be32(or->enc_get_attr.total_bytes); | |
996 | ||
997 | cdbh->attrs_list.get_attr_desc_offset = | |
998 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); | |
999 | ||
1000 | ret = _req_append_segment(or, out_padding, &or->enc_get_attr, | |
1001 | or->out.last_seg, &or->out); | |
1002 | if (ret) | |
1003 | return ret; | |
1004 | or->out.last_seg = &or->enc_get_attr; | |
1005 | ||
1006 | /* The incoming buffer info update */ | |
1007 | OSD_DEBUG("in-coming\n"); | |
1008 | cdbh->attrs_list.get_attr_alloc_length = | |
1009 | cpu_to_be32(or->get_attr.total_bytes); | |
1010 | ||
1011 | cdbh->attrs_list.get_attr_offset = | |
1012 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); | |
1013 | ||
1014 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, | |
1015 | &or->in); | |
1016 | if (ret) | |
1017 | return ret; | |
1018 | or->in.last_seg = &or->get_attr; | |
1019 | ||
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | int osd_req_decode_get_attr_list(struct osd_request *or, | |
1024 | struct osd_attr *oa, int *nelem, void **iterator) | |
1025 | { | |
1026 | unsigned cur_bytes, returned_bytes; | |
1027 | int n; | |
1028 | const unsigned sizeof_attr_list = _osd_req_sizeof_alist_header(or); | |
1029 | void *cur_p; | |
1030 | ||
1031 | if (!_osd_req_is_alist_type(or, or->get_attr.buff, | |
1032 | OSD_ATTR_LIST_SET_RETRIEVE)) { | |
1033 | oa->attr_page = 0; | |
1034 | oa->attr_id = 0; | |
1035 | oa->val_ptr = NULL; | |
1036 | oa->len = 0; | |
1037 | *iterator = NULL; | |
1038 | return 0; | |
1039 | } | |
1040 | ||
1041 | if (*iterator) { | |
1042 | BUG_ON((*iterator < or->get_attr.buff) || | |
1043 | (or->get_attr.buff + or->get_attr.alloc_size < *iterator)); | |
1044 | cur_p = *iterator; | |
1045 | cur_bytes = (*iterator - or->get_attr.buff) - sizeof_attr_list; | |
1046 | returned_bytes = or->get_attr.total_bytes; | |
1047 | } else { /* first time decode the list header */ | |
1048 | cur_bytes = sizeof_attr_list; | |
1049 | returned_bytes = _osd_req_alist_size(or, or->get_attr.buff) + | |
1050 | sizeof_attr_list; | |
1051 | ||
1052 | cur_p = or->get_attr.buff + sizeof_attr_list; | |
1053 | ||
1054 | if (returned_bytes > or->get_attr.alloc_size) { | |
1055 | OSD_DEBUG("target report: space was not big enough! " | |
1056 | "Allocate=%u Needed=%u\n", | |
1057 | or->get_attr.alloc_size, | |
1058 | returned_bytes + sizeof_attr_list); | |
1059 | ||
1060 | returned_bytes = | |
1061 | or->get_attr.alloc_size - sizeof_attr_list; | |
1062 | } | |
1063 | or->get_attr.total_bytes = returned_bytes; | |
1064 | } | |
1065 | ||
1066 | for (n = 0; (n < *nelem) && (cur_bytes < returned_bytes); ++n) { | |
1067 | struct osd_attributes_list_element *attr = cur_p; | |
1068 | unsigned inc; | |
1069 | ||
1070 | oa->len = be16_to_cpu(attr->attr_bytes); | |
1071 | inc = _osd_req_alist_elem_size(or, oa->len); | |
1072 | OSD_DEBUG("oa->len=%d inc=%d cur_bytes=%d\n", | |
1073 | oa->len, inc, cur_bytes); | |
1074 | cur_bytes += inc; | |
1075 | if (cur_bytes > returned_bytes) { | |
1076 | OSD_ERR("BAD FOOD from target. list not valid!" | |
1077 | "c=%d r=%d n=%d\n", | |
1078 | cur_bytes, returned_bytes, n); | |
1079 | oa->val_ptr = NULL; | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | oa->attr_page = be32_to_cpu(attr->attr_page); | |
1084 | oa->attr_id = be32_to_cpu(attr->attr_id); | |
1085 | oa->val_ptr = attr->attr_val; | |
1086 | ||
1087 | cur_p += inc; | |
1088 | ++oa; | |
1089 | } | |
1090 | ||
1091 | *iterator = (returned_bytes - cur_bytes) ? cur_p : NULL; | |
1092 | *nelem = n; | |
1093 | return returned_bytes - cur_bytes; | |
1094 | } | |
1095 | EXPORT_SYMBOL(osd_req_decode_get_attr_list); | |
1096 | ||
1097 | /* | |
1098 | * Attributes Page-mode | |
1099 | */ | |
1100 | ||
1101 | int osd_req_add_get_attr_page(struct osd_request *or, | |
1102 | u32 page_id, void *attar_page, unsigned max_page_len, | |
1103 | const struct osd_attr *set_one_attr) | |
1104 | { | |
1105 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1106 | ||
1107 | if (or->attributes_mode && | |
1108 | or->attributes_mode != OSD_CDB_GET_ATTR_PAGE_SET_ONE) { | |
1109 | WARN_ON(1); | |
1110 | return -EINVAL; | |
1111 | } | |
1112 | or->attributes_mode = OSD_CDB_GET_ATTR_PAGE_SET_ONE; | |
1113 | ||
1114 | or->get_attr.buff = attar_page; | |
1115 | or->get_attr.total_bytes = max_page_len; | |
1116 | ||
1117 | or->set_attr.buff = set_one_attr->val_ptr; | |
1118 | or->set_attr.total_bytes = set_one_attr->len; | |
1119 | ||
1120 | cdbh->attrs_page.get_attr_page = cpu_to_be32(page_id); | |
1121 | cdbh->attrs_page.get_attr_alloc_length = cpu_to_be32(max_page_len); | |
1122 | /* ocdb->attrs_page.get_attr_offset; */ | |
1123 | ||
1124 | cdbh->attrs_page.set_attr_page = cpu_to_be32(set_one_attr->attr_page); | |
1125 | cdbh->attrs_page.set_attr_id = cpu_to_be32(set_one_attr->attr_id); | |
1126 | cdbh->attrs_page.set_attr_length = cpu_to_be32(set_one_attr->len); | |
1127 | /* ocdb->attrs_page.set_attr_offset; */ | |
1128 | return 0; | |
1129 | } | |
1130 | EXPORT_SYMBOL(osd_req_add_get_attr_page); | |
1131 | ||
1132 | static int _osd_req_finalize_attr_page(struct osd_request *or) | |
1133 | { | |
1134 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1135 | unsigned in_padding, out_padding; | |
1136 | int ret; | |
1137 | ||
1138 | /* returned page */ | |
1139 | cdbh->attrs_page.get_attr_offset = | |
1140 | osd_req_encode_offset(or, or->in.total_bytes, &in_padding); | |
1141 | ||
1142 | ret = _req_append_segment(or, in_padding, &or->get_attr, NULL, | |
1143 | &or->in); | |
1144 | if (ret) | |
1145 | return ret; | |
1146 | ||
1147 | /* set one value */ | |
1148 | cdbh->attrs_page.set_attr_offset = | |
1149 | osd_req_encode_offset(or, or->out.total_bytes, &out_padding); | |
1150 | ||
1151 | ret = _req_append_segment(or, out_padding, &or->enc_get_attr, NULL, | |
1152 | &or->out); | |
1153 | return ret; | |
1154 | } | |
1155 | ||
345c435d BH |
1156 | static int _osd_req_finalize_data_integrity(struct osd_request *or, |
1157 | bool has_in, bool has_out, const u8 *cap_key) | |
1158 | { | |
1159 | struct osd_security_parameters *sec_parms = _osd_req_sec_params(or); | |
1160 | int ret; | |
1161 | ||
1162 | if (!osd_is_sec_alldata(sec_parms)) | |
1163 | return 0; | |
1164 | ||
1165 | if (has_out) { | |
1166 | struct _osd_req_data_segment seg = { | |
1167 | .buff = &or->out_data_integ, | |
1168 | .total_bytes = sizeof(or->out_data_integ), | |
1169 | }; | |
1170 | unsigned pad; | |
1171 | ||
1172 | or->out_data_integ.data_bytes = cpu_to_be64( | |
1173 | or->out.bio ? or->out.bio->bi_size : 0); | |
1174 | or->out_data_integ.set_attributes_bytes = cpu_to_be64( | |
1175 | or->set_attr.total_bytes); | |
1176 | or->out_data_integ.get_attributes_bytes = cpu_to_be64( | |
1177 | or->enc_get_attr.total_bytes); | |
1178 | ||
1179 | sec_parms->data_out_integrity_check_offset = | |
1180 | osd_req_encode_offset(or, or->out.total_bytes, &pad); | |
1181 | ||
1182 | ret = _req_append_segment(or, pad, &seg, or->out.last_seg, | |
1183 | &or->out); | |
1184 | if (ret) | |
1185 | return ret; | |
1186 | or->out.last_seg = NULL; | |
1187 | ||
1188 | /* they are now all chained to request sign them all together */ | |
1189 | osd_sec_sign_data(&or->out_data_integ, or->out.req->bio, | |
1190 | cap_key); | |
1191 | } | |
1192 | ||
1193 | if (has_in) { | |
1194 | struct _osd_req_data_segment seg = { | |
1195 | .buff = &or->in_data_integ, | |
1196 | .total_bytes = sizeof(or->in_data_integ), | |
1197 | }; | |
1198 | unsigned pad; | |
1199 | ||
1200 | sec_parms->data_in_integrity_check_offset = | |
1201 | osd_req_encode_offset(or, or->in.total_bytes, &pad); | |
1202 | ||
1203 | ret = _req_append_segment(or, pad, &seg, or->in.last_seg, | |
1204 | &or->in); | |
1205 | if (ret) | |
1206 | return ret; | |
1207 | ||
1208 | or->in.last_seg = NULL; | |
1209 | } | |
1210 | ||
1211 | return 0; | |
1212 | } | |
1213 | ||
02941a53 BH |
1214 | /* |
1215 | * osd_finalize_request and helpers | |
1216 | */ | |
1217 | ||
1218 | static int _init_blk_request(struct osd_request *or, | |
1219 | bool has_in, bool has_out) | |
1220 | { | |
1221 | gfp_t flags = or->alloc_flags; | |
1222 | struct scsi_device *scsi_device = or->osd_dev->scsi_device; | |
1223 | struct request_queue *q = scsi_device->request_queue; | |
1224 | struct request *req; | |
1225 | int ret = -ENOMEM; | |
1226 | ||
1227 | req = blk_get_request(q, has_out, flags); | |
1228 | if (!req) | |
1229 | goto out; | |
1230 | ||
1231 | or->request = req; | |
1232 | req->cmd_type = REQ_TYPE_BLOCK_PC; | |
1233 | req->timeout = or->timeout; | |
1234 | req->retries = or->retries; | |
1235 | req->sense = or->sense; | |
1236 | req->sense_len = 0; | |
1237 | ||
1238 | if (has_out) { | |
1239 | or->out.req = req; | |
1240 | if (has_in) { | |
1241 | /* allocate bidi request */ | |
1242 | req = blk_get_request(q, READ, flags); | |
1243 | if (!req) { | |
1244 | OSD_DEBUG("blk_get_request for bidi failed\n"); | |
1245 | goto out; | |
1246 | } | |
1247 | req->cmd_type = REQ_TYPE_BLOCK_PC; | |
1248 | or->in.req = or->request->next_rq = req; | |
1249 | } | |
1250 | } else if (has_in) | |
1251 | or->in.req = req; | |
1252 | ||
1253 | ret = 0; | |
1254 | out: | |
1255 | OSD_DEBUG("or=%p has_in=%d has_out=%d => %d, %p\n", | |
1256 | or, has_in, has_out, ret, or->request); | |
1257 | return ret; | |
1258 | } | |
1259 | ||
1260 | int osd_finalize_request(struct osd_request *or, | |
1261 | u8 options, const void *cap, const u8 *cap_key) | |
1262 | { | |
1263 | struct osd_cdb_head *cdbh = osd_cdb_head(&or->cdb); | |
1264 | bool has_in, has_out; | |
1265 | int ret; | |
1266 | ||
1267 | if (options & OSD_REQ_FUA) | |
1268 | cdbh->options |= OSD_CDB_FUA; | |
1269 | ||
1270 | if (options & OSD_REQ_DPO) | |
1271 | cdbh->options |= OSD_CDB_DPO; | |
1272 | ||
1273 | if (options & OSD_REQ_BYPASS_TIMESTAMPS) | |
1274 | cdbh->timestamp_control = OSD_CDB_BYPASS_TIMESTAMPS; | |
1275 | ||
1276 | osd_set_caps(&or->cdb, cap); | |
1277 | ||
1278 | has_in = or->in.bio || or->get_attr.total_bytes; | |
1279 | has_out = or->out.bio || or->set_attr.total_bytes || | |
1280 | or->enc_get_attr.total_bytes; | |
1281 | ||
1282 | ret = _init_blk_request(or, has_in, has_out); | |
1283 | if (ret) { | |
1284 | OSD_DEBUG("_init_blk_request failed\n"); | |
1285 | return ret; | |
1286 | } | |
1287 | ||
1288 | if (or->out.bio) { | |
1289 | ret = blk_rq_append_bio(or->request->q, or->out.req, | |
1290 | or->out.bio); | |
1291 | if (ret) { | |
1292 | OSD_DEBUG("blk_rq_append_bio out failed\n"); | |
1293 | return ret; | |
1294 | } | |
1295 | OSD_DEBUG("out bytes=%llu (bytes_req=%u)\n", | |
1296 | _LLU(or->out.total_bytes), or->out.req->data_len); | |
1297 | } | |
1298 | if (or->in.bio) { | |
1299 | ret = blk_rq_append_bio(or->request->q, or->in.req, or->in.bio); | |
1300 | if (ret) { | |
1301 | OSD_DEBUG("blk_rq_append_bio in failed\n"); | |
1302 | return ret; | |
1303 | } | |
1304 | OSD_DEBUG("in bytes=%llu (bytes_req=%u)\n", | |
1305 | _LLU(or->in.total_bytes), or->in.req->data_len); | |
1306 | } | |
1307 | ||
4ef1a3d7 BH |
1308 | or->out.pad_buff = sg_out_pad_buffer; |
1309 | or->in.pad_buff = sg_in_pad_buffer; | |
1310 | ||
02941a53 BH |
1311 | if (!or->attributes_mode) |
1312 | or->attributes_mode = OSD_CDB_GET_SET_ATTR_LISTS; | |
1313 | cdbh->command_specific_options |= or->attributes_mode; | |
4ef1a3d7 BH |
1314 | if (or->attributes_mode == OSD_CDB_GET_ATTR_PAGE_SET_ONE) { |
1315 | ret = _osd_req_finalize_attr_page(or); | |
1316 | } else { | |
1317 | /* TODO: I think that for the GET_ATTR command these 2 should | |
1318 | * be reversed to keep them in execution order (for embeded | |
1319 | * targets with low memory footprint) | |
1320 | */ | |
1321 | ret = _osd_req_finalize_set_attr_list(or); | |
1322 | if (ret) { | |
1323 | OSD_DEBUG("_osd_req_finalize_set_attr_list failed\n"); | |
1324 | return ret; | |
1325 | } | |
1326 | ||
1327 | ret = _osd_req_finalize_get_attr_list(or); | |
1328 | if (ret) { | |
1329 | OSD_DEBUG("_osd_req_finalize_get_attr_list failed\n"); | |
1330 | return ret; | |
1331 | } | |
1332 | } | |
02941a53 | 1333 | |
345c435d BH |
1334 | ret = _osd_req_finalize_data_integrity(or, has_in, has_out, cap_key); |
1335 | if (ret) | |
1336 | return ret; | |
1337 | ||
1338 | osd_sec_sign_cdb(&or->cdb, cap_key); | |
1339 | ||
02941a53 BH |
1340 | or->request->cmd = or->cdb.buff; |
1341 | or->request->cmd_len = _osd_req_cdb_len(or); | |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | EXPORT_SYMBOL(osd_finalize_request); | |
1346 | ||
98f3aea2 BH |
1347 | #define OSD_SENSE_PRINT1(fmt, a...) \ |
1348 | do { \ | |
1349 | if (__cur_sense_need_output) \ | |
1350 | OSD_ERR(fmt, ##a); \ | |
1351 | } while (0) | |
1352 | ||
1353 | #define OSD_SENSE_PRINT2(fmt, a...) OSD_SENSE_PRINT1(" " fmt, ##a) | |
1354 | ||
1355 | int osd_req_decode_sense_full(struct osd_request *or, | |
1356 | struct osd_sense_info *osi, bool silent, | |
1357 | struct osd_obj_id *bad_obj_list __unused, int max_obj __unused, | |
1358 | struct osd_attr *bad_attr_list, int max_attr) | |
1359 | { | |
1360 | int sense_len, original_sense_len; | |
1361 | struct osd_sense_info local_osi; | |
1362 | struct scsi_sense_descriptor_based *ssdb; | |
1363 | void *cur_descriptor; | |
1364 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 0) | |
1365 | const bool __cur_sense_need_output = false; | |
1366 | #else | |
1367 | bool __cur_sense_need_output = !silent; | |
1368 | #endif | |
1369 | ||
1370 | if (!or->request->errors) | |
1371 | return 0; | |
1372 | ||
1373 | ssdb = or->request->sense; | |
1374 | sense_len = or->request->sense_len; | |
1375 | if ((sense_len < (int)sizeof(*ssdb) || !ssdb->sense_key)) { | |
1376 | OSD_ERR("Block-layer returned error(0x%x) but " | |
1377 | "sense_len(%u) || key(%d) is empty\n", | |
1378 | or->request->errors, sense_len, ssdb->sense_key); | |
1379 | return -EIO; | |
1380 | } | |
1381 | ||
1382 | if ((ssdb->response_code != 0x72) && (ssdb->response_code != 0x73)) { | |
1383 | OSD_ERR("Unrecognized scsi sense: rcode=%x length=%d\n", | |
1384 | ssdb->response_code, sense_len); | |
1385 | return -EIO; | |
1386 | } | |
1387 | ||
1388 | osi = osi ? : &local_osi; | |
1389 | memset(osi, 0, sizeof(*osi)); | |
1390 | osi->key = ssdb->sense_key; | |
1391 | osi->additional_code = be16_to_cpu(ssdb->additional_sense_code); | |
1392 | original_sense_len = ssdb->additional_sense_length + 8; | |
1393 | ||
1394 | #if (CONFIG_SCSI_OSD_DPRINT_SENSE == 1) | |
1395 | if (__cur_sense_need_output) | |
1396 | __cur_sense_need_output = (osi->key > scsi_sk_recovered_error); | |
1397 | #endif | |
1398 | OSD_SENSE_PRINT1("Main Sense information key=0x%x length(%d, %d) " | |
1399 | "additional_code=0x%x\n", | |
1400 | osi->key, original_sense_len, sense_len, | |
1401 | osi->additional_code); | |
1402 | ||
1403 | if (original_sense_len < sense_len) | |
1404 | sense_len = original_sense_len; | |
1405 | ||
1406 | cur_descriptor = ssdb->ssd; | |
1407 | sense_len -= sizeof(*ssdb); | |
1408 | while (sense_len > 0) { | |
1409 | struct scsi_sense_descriptor *ssd = cur_descriptor; | |
1410 | int cur_len = ssd->additional_length + 2; | |
1411 | ||
1412 | sense_len -= cur_len; | |
1413 | ||
1414 | if (sense_len < 0) | |
1415 | break; /* sense was truncated */ | |
1416 | ||
1417 | switch (ssd->descriptor_type) { | |
1418 | case scsi_sense_information: | |
1419 | case scsi_sense_command_specific_information: | |
1420 | { | |
1421 | struct scsi_sense_command_specific_data_descriptor | |
1422 | *sscd = cur_descriptor; | |
1423 | ||
1424 | osi->command_info = | |
1425 | get_unaligned_be64(&sscd->information) ; | |
1426 | OSD_SENSE_PRINT2( | |
1427 | "command_specific_information 0x%llx \n", | |
1428 | _LLU(osi->command_info)); | |
1429 | break; | |
1430 | } | |
1431 | case scsi_sense_key_specific: | |
1432 | { | |
1433 | struct scsi_sense_key_specific_data_descriptor | |
1434 | *ssks = cur_descriptor; | |
1435 | ||
1436 | osi->sense_info = get_unaligned_be16(&ssks->value); | |
1437 | OSD_SENSE_PRINT2( | |
1438 | "sense_key_specific_information %u" | |
1439 | "sksv_cd_bpv_bp (0x%x)\n", | |
1440 | osi->sense_info, ssks->sksv_cd_bpv_bp); | |
1441 | break; | |
1442 | } | |
1443 | case osd_sense_object_identification: | |
1444 | { /*FIXME: Keep first not last, Store in array*/ | |
1445 | struct osd_sense_identification_data_descriptor | |
1446 | *osidd = cur_descriptor; | |
1447 | ||
1448 | osi->not_initiated_command_functions = | |
1449 | le32_to_cpu(osidd->not_initiated_functions); | |
1450 | osi->completed_command_functions = | |
1451 | le32_to_cpu(osidd->completed_functions); | |
1452 | osi->obj.partition = be64_to_cpu(osidd->partition_id); | |
1453 | osi->obj.id = be64_to_cpu(osidd->object_id); | |
1454 | OSD_SENSE_PRINT2( | |
1455 | "object_identification pid=0x%llx oid=0x%llx\n", | |
1456 | _LLU(osi->obj.partition), _LLU(osi->obj.id)); | |
1457 | OSD_SENSE_PRINT2( | |
1458 | "not_initiated_bits(%x) " | |
1459 | "completed_command_bits(%x)\n", | |
1460 | osi->not_initiated_command_functions, | |
1461 | osi->completed_command_functions); | |
1462 | break; | |
1463 | } | |
1464 | case osd_sense_response_integrity_check: | |
1465 | { | |
1466 | struct osd_sense_response_integrity_check_descriptor | |
1467 | *osricd = cur_descriptor; | |
1468 | const unsigned len = | |
1469 | sizeof(osricd->integrity_check_value); | |
1470 | char key_dump[len*4 + 2]; /* 2nibbles+space+ASCII */ | |
1471 | ||
1472 | hex_dump_to_buffer(osricd->integrity_check_value, len, | |
1473 | 32, 1, key_dump, sizeof(key_dump), true); | |
1474 | OSD_SENSE_PRINT2("response_integrity [%s]\n", key_dump); | |
1475 | } | |
1476 | case osd_sense_attribute_identification: | |
1477 | { | |
1478 | struct osd_sense_attributes_data_descriptor | |
1479 | *osadd = cur_descriptor; | |
1480 | int len = min(cur_len, sense_len); | |
1481 | int i = 0; | |
1482 | struct osd_sense_attr *pattr = osadd->sense_attrs; | |
1483 | ||
1484 | while (len < 0) { | |
1485 | u32 attr_page = be32_to_cpu(pattr->attr_page); | |
1486 | u32 attr_id = be32_to_cpu(pattr->attr_id); | |
1487 | ||
1488 | if (i++ == 0) { | |
1489 | osi->attr.attr_page = attr_page; | |
1490 | osi->attr.attr_id = attr_id; | |
1491 | } | |
1492 | ||
1493 | if (bad_attr_list && max_attr) { | |
1494 | bad_attr_list->attr_page = attr_page; | |
1495 | bad_attr_list->attr_id = attr_id; | |
1496 | bad_attr_list++; | |
1497 | max_attr--; | |
1498 | } | |
1499 | OSD_SENSE_PRINT2( | |
1500 | "osd_sense_attribute_identification" | |
1501 | "attr_page=0x%x attr_id=0x%x\n", | |
1502 | attr_page, attr_id); | |
1503 | } | |
1504 | } | |
1505 | /*These are not legal for OSD*/ | |
1506 | case scsi_sense_field_replaceable_unit: | |
1507 | OSD_SENSE_PRINT2("scsi_sense_field_replaceable_unit\n"); | |
1508 | break; | |
1509 | case scsi_sense_stream_commands: | |
1510 | OSD_SENSE_PRINT2("scsi_sense_stream_commands\n"); | |
1511 | break; | |
1512 | case scsi_sense_block_commands: | |
1513 | OSD_SENSE_PRINT2("scsi_sense_block_commands\n"); | |
1514 | break; | |
1515 | case scsi_sense_ata_return: | |
1516 | OSD_SENSE_PRINT2("scsi_sense_ata_return\n"); | |
1517 | break; | |
1518 | default: | |
1519 | if (ssd->descriptor_type <= scsi_sense_Reserved_last) | |
1520 | OSD_SENSE_PRINT2( | |
1521 | "scsi_sense Reserved descriptor (0x%x)", | |
1522 | ssd->descriptor_type); | |
1523 | else | |
1524 | OSD_SENSE_PRINT2( | |
1525 | "scsi_sense Vendor descriptor (0x%x)", | |
1526 | ssd->descriptor_type); | |
1527 | } | |
1528 | ||
1529 | cur_descriptor += cur_len; | |
1530 | } | |
1531 | ||
1532 | return (osi->key > scsi_sk_recovered_error) ? -EIO : 0; | |
1533 | } | |
1534 | EXPORT_SYMBOL(osd_req_decode_sense_full); | |
1535 | ||
02941a53 BH |
1536 | /* |
1537 | * Implementation of osd_sec.h API | |
1538 | * TODO: Move to a separate osd_sec.c file at a later stage. | |
1539 | */ | |
1540 | ||
1541 | enum { OSD_SEC_CAP_V1_ALL_CAPS = | |
1542 | OSD_SEC_CAP_APPEND | OSD_SEC_CAP_OBJ_MGMT | OSD_SEC_CAP_REMOVE | | |
1543 | OSD_SEC_CAP_CREATE | OSD_SEC_CAP_SET_ATTR | OSD_SEC_CAP_GET_ATTR | | |
1544 | OSD_SEC_CAP_WRITE | OSD_SEC_CAP_READ | OSD_SEC_CAP_POL_SEC | | |
1545 | OSD_SEC_CAP_GLOBAL | OSD_SEC_CAP_DEV_MGMT | |
1546 | }; | |
1547 | ||
c6572c98 BH |
1548 | enum { OSD_SEC_CAP_V2_ALL_CAPS = |
1549 | OSD_SEC_CAP_V1_ALL_CAPS | OSD_SEC_CAP_QUERY | OSD_SEC_CAP_M_OBJECT | |
1550 | }; | |
1551 | ||
02941a53 BH |
1552 | void osd_sec_init_nosec_doall_caps(void *caps, |
1553 | const struct osd_obj_id *obj, bool is_collection, const bool is_v1) | |
1554 | { | |
1555 | struct osd_capability *cap = caps; | |
1556 | u8 type; | |
1557 | u8 descriptor_type; | |
1558 | ||
1559 | if (likely(obj->id)) { | |
1560 | if (unlikely(is_collection)) { | |
1561 | type = OSD_SEC_OBJ_COLLECTION; | |
1562 | descriptor_type = is_v1 ? OSD_SEC_OBJ_DESC_OBJ : | |
1563 | OSD_SEC_OBJ_DESC_COL; | |
1564 | } else { | |
1565 | type = OSD_SEC_OBJ_USER; | |
1566 | descriptor_type = OSD_SEC_OBJ_DESC_OBJ; | |
1567 | } | |
1568 | WARN_ON(!obj->partition); | |
1569 | } else { | |
1570 | type = obj->partition ? OSD_SEC_OBJ_PARTITION : | |
1571 | OSD_SEC_OBJ_ROOT; | |
1572 | descriptor_type = OSD_SEC_OBJ_DESC_PAR; | |
1573 | } | |
1574 | ||
1575 | memset(cap, 0, sizeof(*cap)); | |
1576 | ||
1577 | cap->h.format = OSD_SEC_CAP_FORMAT_VER1; | |
1578 | cap->h.integrity_algorithm__key_version = 0; /* MAKE_BYTE(0, 0); */ | |
1579 | cap->h.security_method = OSD_SEC_NOSEC; | |
1580 | /* cap->expiration_time; | |
1581 | cap->AUDIT[30-10]; | |
1582 | cap->discriminator[42-30]; | |
1583 | cap->object_created_time; */ | |
1584 | cap->h.object_type = type; | |
1585 | osd_sec_set_caps(&cap->h, OSD_SEC_CAP_V1_ALL_CAPS); | |
1586 | cap->h.object_descriptor_type = descriptor_type; | |
1587 | cap->od.obj_desc.policy_access_tag = 0; | |
1588 | cap->od.obj_desc.allowed_partition_id = cpu_to_be64(obj->partition); | |
1589 | cap->od.obj_desc.allowed_object_id = cpu_to_be64(obj->id); | |
1590 | } | |
1591 | EXPORT_SYMBOL(osd_sec_init_nosec_doall_caps); | |
1592 | ||
c6572c98 BH |
1593 | /* FIXME: Extract version from caps pointer. |
1594 | * Also Pete's target only supports caps from OSDv1 for now | |
1595 | */ | |
02941a53 BH |
1596 | void osd_set_caps(struct osd_cdb *cdb, const void *caps) |
1597 | { | |
c6572c98 BH |
1598 | bool is_ver1 = true; |
1599 | /* NOTE: They start at same address */ | |
1600 | memcpy(&cdb->v1.caps, caps, is_ver1 ? OSDv1_CAP_LEN : OSD_CAP_LEN); | |
02941a53 | 1601 | } |
4ef1a3d7 | 1602 | |
345c435d BH |
1603 | bool osd_is_sec_alldata(struct osd_security_parameters *sec_parms __unused) |
1604 | { | |
1605 | return false; | |
1606 | } | |
1607 | ||
1608 | void osd_sec_sign_cdb(struct osd_cdb *ocdb __unused, const u8 *cap_key __unused) | |
1609 | { | |
1610 | } | |
1611 | ||
1612 | void osd_sec_sign_data(void *data_integ __unused, | |
1613 | struct bio *bio __unused, const u8 *cap_key __unused) | |
1614 | { | |
1615 | } | |
1616 | ||
4ef1a3d7 BH |
1617 | /* |
1618 | * Declared in osd_protocol.h | |
1619 | * 4.12.5 Data-In and Data-Out buffer offsets | |
1620 | * byte offset = mantissa * (2^(exponent+8)) | |
1621 | * Returns the smallest allowed encoded offset that contains given @offset | |
1622 | * The actual encoded offset returned is @offset + *@padding. | |
1623 | */ | |
1624 | osd_cdb_offset __osd_encode_offset( | |
1625 | u64 offset, unsigned *padding, int min_shift, int max_shift) | |
1626 | { | |
1627 | u64 try_offset = -1, mod, align; | |
1628 | osd_cdb_offset be32_offset; | |
1629 | int shift; | |
1630 | ||
1631 | *padding = 0; | |
1632 | if (!offset) | |
1633 | return 0; | |
1634 | ||
1635 | for (shift = min_shift; shift < max_shift; ++shift) { | |
1636 | try_offset = offset >> shift; | |
1637 | if (try_offset < (1 << OSD_OFFSET_MAX_BITS)) | |
1638 | break; | |
1639 | } | |
1640 | ||
1641 | BUG_ON(shift == max_shift); | |
1642 | ||
1643 | align = 1 << shift; | |
1644 | mod = offset & (align - 1); | |
1645 | if (mod) { | |
1646 | *padding = align - mod; | |
1647 | try_offset += 1; | |
1648 | } | |
1649 | ||
1650 | try_offset |= ((shift - 8) & 0xf) << 28; | |
1651 | be32_offset = cpu_to_be32((u32)try_offset); | |
1652 | ||
1653 | OSD_DEBUG("offset=%llu mantissa=%llu exp=%d encoded=%x pad=%d\n", | |
1654 | _LLU(offset), _LLU(try_offset & 0x0FFFFFFF), shift, | |
1655 | be32_offset, *padding); | |
1656 | return be32_offset; | |
1657 | } |