2 * osd_protocol.h - OSD T10 standard C definitions.
4 * Copyright (C) 2008 Panasas Inc. All rights reserved.
7 * Boaz Harrosh <bharrosh@panasas.com>
8 * Benny Halevy <bhalevy@panasas.com>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2
13 * This file contains types and constants that are defined by the protocol
14 * Note: All names and symbols are taken from the OSD standard's text.
16 #ifndef __OSD_PROTOCOL_H__
17 #define __OSD_PROTOCOL_H__
19 #include <linux/types.h>
20 #include <asm/unaligned.h>
21 #include <scsi/scsi.h>
24 OSDv1_ADDITIONAL_CDB_LENGTH = 192,
25 OSDv1_TOTAL_CDB_LEN = OSDv1_ADDITIONAL_CDB_LENGTH + 8,
27 /* Latest supported version */
28 OSD_ADDITIONAL_CDB_LENGTH = OSDv1_ADDITIONAL_CDB_LENGTH,
29 OSD_TOTAL_CDB_LEN = OSDv1_TOTAL_CDB_LEN,
30 OSD_CAP_LEN = OSDv1_CAP_LEN,
32 OSD_SYSTEMID_LEN = 20,
33 OSD_CRYPTO_KEYID_SIZE = 20,
34 OSD_CRYPTO_SEED_SIZE = 4,
35 OSD_CRYPTO_NONCE_SIZE = 12,
36 OSD_MAX_SENSE_LEN = 252, /* from SPC-3 */
38 OSD_PARTITION_FIRST_ID = 0x10000,
39 OSD_OBJECT_FIRST_ID = 0x10000,
43 * osd2r03: 5.2.3 Caching control bits
45 enum osd_options_byte {
46 OSD_CDB_FUA = 0x08, /* Force Unit Access */
47 OSD_CDB_DPO = 0x10, /* Disable Page Out */
51 * osd2r03: 5.2.5 Isolation.
52 * First 3 bits, V2-only.
53 * Also for attr 110h "default isolation method" at Root Information page
55 enum osd_options_byte_isolation {
56 OSD_ISOLATION_DEFAULT = 0,
57 OSD_ISOLATION_NONE = 1,
58 OSD_ISOLATION_STRICT = 2,
59 OSD_ISOLATION_RANGE = 4,
60 OSD_ISOLATION_FUNCTIONAL = 5,
61 OSD_ISOLATION_VENDOR = 7,
65 * osd2r03: 6.8 FLUSH, FLUSH COLLECTION, FLUSH OSD, FLUSH PARTITION
67 enum osd_options_flush_scope_values {
68 OSD_CDB_FLUSH_ALL = 0,
69 OSD_CDB_FLUSH_ATTR_ONLY = 1,
71 OSD_CDB_FLUSH_ALL_RECURSIVE = 2,
73 OSD_CDB_FLUSH_ALL_RANGE = 2,
76 /* osd2r03: 5.2.10 Timestamps control */
78 OSD_CDB_NORMAL_TIMESTAMPS = 0,
79 OSD_CDB_BYPASS_TIMESTAMPS = 0x7f,
83 * osd2r03: 5.2.4.1 Get and set attributes CDB format selection
84 * 2 bits at second nibble of command_specific_options byte
86 enum osd_attributes_mode {
88 OSD_CDB_SET_ONE_ATTR = 0x10,
90 OSD_CDB_GET_ATTR_PAGE_SET_ONE = 0x20,
91 OSD_CDB_GET_SET_ATTR_LISTS = 0x30,
93 OSD_CDB_GET_SET_ATTR_MASK = 0x30,
97 * osd2r03: 4.14.5 Data-In and Data-Out buffer offsets
98 * byte offset = mantissa * (2^(exponent+8))
100 * unsigned mantissa: 28;
104 typedef __be32 __bitwise osd_cdb_offset;
107 OSD_OFFSET_UNUSED = 0xFFFFFFFF,
108 OSD_OFFSET_MAX_BITS = 28,
110 OSDv1_OFFSET_MIN_SHIFT = 8,
111 OSD_OFFSET_MAX_SHIFT = 16,
114 /* Return the smallest allowed encoded offset that contains @offset.
116 * The actual encoded offset returned is @offset + *padding.
117 * (up to max_shift, non-inclusive)
119 osd_cdb_offset __osd_encode_offset(u64 offset, unsigned *padding,
120 int min_shift, int max_shift);
122 /* Minimum alignment is 256 bytes
123 * Note: Seems from std v1 that exponent can be from 0+8 to 0xE+8 (inclusive)
124 * which is 8 to 23 but IBM code restricts it to 16, so be it.
126 static inline osd_cdb_offset osd_encode_offset_v1(u64 offset, unsigned *padding)
128 return __osd_encode_offset(offset, padding,
129 OSDv1_OFFSET_MIN_SHIFT, OSD_OFFSET_MAX_SHIFT);
132 /* osd2r03: 5.2.1 Overview */
133 struct osd_cdb_head {
134 struct scsi_varlen_cdb_hdr varlen_cdb;
136 u8 command_specific_options;
137 u8 timestamp_control;
138 /*13*/ u8 reserved1[3];
139 /*16*/ __be64 partition;
140 /*24*/ __be64 object;
141 /*32*/ union { /* V1 vs V2 alignment differences */
142 struct __osdv1_cdb_addr_len {
143 /*32*/ __be32 list_identifier;/* Rarely used */
144 /*36*/ __be64 length;
145 /*44*/ __be64 start_address;
148 /*52*/ union { /* selected attributes mode Page/List/Single */
149 struct osd_attributes_page_mode {
150 /*52*/ __be32 get_attr_page;
151 /*56*/ __be32 get_attr_alloc_length;
152 /*60*/ osd_cdb_offset get_attr_offset;
154 /*64*/ __be32 set_attr_page;
155 /*68*/ __be32 set_attr_id;
156 /*72*/ __be32 set_attr_length;
157 /*76*/ osd_cdb_offset set_attr_offset;
158 /*80*/ } __packed attrs_page;
160 struct osd_attributes_list_mode {
161 /*52*/ __be32 get_attr_desc_bytes;
162 /*56*/ osd_cdb_offset get_attr_desc_offset;
164 /*60*/ __be32 get_attr_alloc_length;
165 /*64*/ osd_cdb_offset get_attr_offset;
167 /*68*/ __be32 set_attr_bytes;
168 /*72*/ osd_cdb_offset set_attr_offset;
170 /*80*/ } __packed attrs_list;
172 /* osd2r03:5.2.4.2 Set one attribute value using CDB fields */
173 struct osd_attributes_cdb_mode {
174 /*52*/ __be32 set_attr_page;
175 /*56*/ __be32 set_attr_id;
176 /*60*/ __be16 set_attr_len;
177 /*62*/ u8 set_attr_val[18];
178 /*80*/ } __packed attrs_cdb;
179 /*52*/ u8 get_set_attributes_parameters[28];
185 struct osd_security_parameters {
186 /*160*/u8 integrity_check_value[OSD_CRYPTO_KEYID_SIZE];
187 /*180*/u8 request_nonce[OSD_CRYPTO_NONCE_SIZE];
188 /*192*/osd_cdb_offset data_in_integrity_check_offset;
189 /*196*/osd_cdb_offset data_out_integrity_check_offset;
194 struct osd_cdb_head h;
195 u8 caps[OSDv1_CAP_LEN];
196 struct osd_security_parameters sec_params;
202 u8 buff[OSD_TOTAL_CDB_LEN];
206 static inline struct osd_cdb_head *osd_cdb_head(struct osd_cdb *ocdb)
208 return (struct osd_cdb_head *)ocdb->buff;
211 /* define both version actions
212 * Ex name = FORMAT_OSD we have OSD_ACT_FORMAT_OSD && OSDv1_ACT_FORMAT_OSD
214 #define OSD_ACT___(Name, Num) \
215 OSD_ACT_##Name = __constant_cpu_to_be16(0x8880 + Num), \
216 OSDv1_ACT_##Name = __constant_cpu_to_be16(0x8800 + Num),
218 /* V2 only actions */
219 #define OSD_ACT_V2(Name, Num) \
220 OSD_ACT_##Name = __constant_cpu_to_be16(0x8880 + Num),
222 #define OSD_ACT_V1_V2(Name, Num1, Num2) \
223 OSD_ACT_##Name = __constant_cpu_to_be16(Num2), \
224 OSDv1_ACT_##Name = __constant_cpu_to_be16(Num1),
226 enum osd_service_actions {
227 OSD_ACT_V2(OBJECT_STRUCTURE_CHECK, 0x00)
228 OSD_ACT___(FORMAT_OSD, 0x01)
229 OSD_ACT___(CREATE, 0x02)
230 OSD_ACT___(LIST, 0x03)
231 OSD_ACT_V2(PUNCH, 0x04)
232 OSD_ACT___(READ, 0x05)
233 OSD_ACT___(WRITE, 0x06)
234 OSD_ACT___(APPEND, 0x07)
235 OSD_ACT___(FLUSH, 0x08)
236 OSD_ACT_V2(CLEAR, 0x09)
237 OSD_ACT___(REMOVE, 0x0A)
238 OSD_ACT___(CREATE_PARTITION, 0x0B)
239 OSD_ACT___(REMOVE_PARTITION, 0x0C)
240 OSD_ACT___(GET_ATTRIBUTES, 0x0E)
241 OSD_ACT___(SET_ATTRIBUTES, 0x0F)
242 OSD_ACT___(CREATE_AND_WRITE, 0x12)
243 OSD_ACT___(CREATE_COLLECTION, 0x15)
244 OSD_ACT___(REMOVE_COLLECTION, 0x16)
245 OSD_ACT___(LIST_COLLECTION, 0x17)
246 OSD_ACT___(SET_KEY, 0x18)
247 OSD_ACT___(SET_MASTER_KEY, 0x19)
248 OSD_ACT___(FLUSH_COLLECTION, 0x1A)
249 OSD_ACT___(FLUSH_PARTITION, 0x1B)
250 OSD_ACT___(FLUSH_OSD, 0x1C)
252 OSD_ACT_V2(QUERY, 0x20)
253 OSD_ACT_V2(REMOVE_MEMBER_OBJECTS, 0x21)
254 OSD_ACT_V2(GET_MEMBER_ATTRIBUTES, 0x22)
255 OSD_ACT_V2(SET_MEMBER_ATTRIBUTES, 0x23)
256 OSD_ACT_V2(READ_MAP, 0x31)
258 OSD_ACT_V1_V2(PERFORM_SCSI_COMMAND, 0x8F7E, 0x8F7C)
259 OSD_ACT_V1_V2(SCSI_TASK_MANAGEMENT, 0x8F7F, 0x8F7D)
260 /* 0x8F80 to 0x8FFF are Vendor specific */
263 /* osd2r03: 7.1.3.2 List entry format for retrieving attributes */
264 struct osd_attributes_list_attrid {
270 * osd2r03: 7.1.3.3 List entry format for retrieved attributes and
271 * for setting attributes
273 struct osd_attributes_list_element {
281 OSDv1_ATTRIBUTES_ELEM_ALIGN = 1,
285 OSD_ATTR_LIST_ALL_PAGES = 0xFFFFFFFF,
286 OSD_ATTR_LIST_ALL_IN_PAGE = 0xFFFFFFFF,
289 static inline unsigned osdv1_attr_list_elem_size(unsigned len)
291 return ALIGN(len + sizeof(struct osd_attributes_list_element),
292 OSDv1_ATTRIBUTES_ELEM_ALIGN);
296 * osd2r03: 7.1.3 OSD attributes lists (Table 184) — List type values
298 enum osd_attr_list_types {
299 OSD_ATTR_LIST_GET = 0x1, /* descriptors only */
300 OSD_ATTR_LIST_SET_RETRIEVE = 0x9, /*descriptors/values variable-length*/
301 OSD_V2_ATTR_LIST_MULTIPLE = 0xE, /* ver2, Multiple Objects lists*/
302 OSD_V1_ATTR_LIST_CREATE_MULTIPLE = 0xF,/*ver1, used by create_multple*/
305 /* osd2r03: 7.1.3.4 Multi-object retrieved attributes format */
306 struct osd_attributes_list_multi_header {
308 u8 object_type; /* object_type enum below */
311 /* followed by struct osd_attributes_list_element's */
314 struct osdv1_attributes_list_header {
315 u8 type; /* low 4-bit only */
317 __be16 list_bytes; /* Initiator shall set to Zero. Only set by target */
319 * type=9 followed by struct osd_attributes_list_element's
320 * type=E followed by struct osd_attributes_list_multi_header's
324 static inline unsigned osdv1_list_size(struct osdv1_attributes_list_header *h)
326 return be16_to_cpu(h->list_bytes);
330 * osd2r03: 6.15 LIST (Table 79) LIST command parameter data.
331 * for root_lstchg below
334 OSD_OBJ_ID_LIST_PAR = 0x1, /* V1-only. Not used in V2 */
335 OSD_OBJ_ID_LIST_LSTCHG = 0x2,
339 * osd2r03: 6.15.2 LIST command parameter data
340 * (Also for LIST COLLECTION)
342 struct osd_obj_id_list {
343 __be64 list_bytes; /* bytes in list excluding list_bytes (-8) */
344 __be64 continuation_id;
345 __be32 list_identifier;
348 __be64 object_ids[0];
351 static inline bool osd_is_obj_list_done(struct osd_obj_id_list *list,
354 *is_changed = (0 != (list->root_lstchg & OSD_OBJ_ID_LIST_LSTCHG));
355 return 0 != list->continuation_id;
359 * osd2r03: 4.12.4.5 The ALLDATA security method
361 struct osd_data_out_integrity_info {
363 __be64 set_attributes_bytes;
364 __be64 get_attributes_bytes;
365 __be64 integrity_check_value;
368 struct osd_data_in_integrity_info {
370 __be64 retrieved_attributes_bytes;
371 __be64 integrity_check_value;
374 struct osd_timestamp {
375 u8 time[6]; /* number of milliseconds since 1/1/1970 UT (big endian) */
377 /* FIXME: define helper functions to convert to/from osd time format */
380 * Capability & Security definitions
381 * osd2r03: 4.11.2.2 Capability format
382 * osd2r03: 5.2.8 Security parameters
385 struct osd_key_identifier {
386 u8 id[7]; /* if you know why 7 please email bharrosh@panasas.com */
389 /* for osd_capability.format */
391 OSD_SEC_CAP_FORMAT_NO_CAPS = 0,
392 OSD_SEC_CAP_FORMAT_VER1 = 1,
393 OSD_SEC_CAP_FORMAT_VER2 = 2,
396 /* security_method */
405 OSD_SEC_OBJ_ROOT = 0x1,
406 OSD_SEC_OBJ_PARTITION = 0x2,
407 OSD_SEC_OBJ_COLLECTION = 0x40,
408 OSD_SEC_OBJ_USER = 0x80,
411 enum osd_capability_bit_masks {
412 OSD_SEC_CAP_APPEND = BIT(0),
413 OSD_SEC_CAP_OBJ_MGMT = BIT(1),
414 OSD_SEC_CAP_REMOVE = BIT(2),
415 OSD_SEC_CAP_CREATE = BIT(3),
416 OSD_SEC_CAP_SET_ATTR = BIT(4),
417 OSD_SEC_CAP_GET_ATTR = BIT(5),
418 OSD_SEC_CAP_WRITE = BIT(6),
419 OSD_SEC_CAP_READ = BIT(7),
421 OSD_SEC_CAP_NONE1 = BIT(8),
422 OSD_SEC_CAP_NONE2 = BIT(9),
423 OSD_SEC_CAP_NONE3 = BIT(10),
424 OSD_SEC_CAP_QUERY = BIT(11), /*v2 only*/
425 OSD_SEC_CAP_M_OBJECT = BIT(12), /*v2 only*/
426 OSD_SEC_CAP_POL_SEC = BIT(13),
427 OSD_SEC_CAP_GLOBAL = BIT(14),
428 OSD_SEC_CAP_DEV_MGMT = BIT(15),
431 /* for object_descriptor_type (hi nibble used) */
433 OSD_SEC_OBJ_DESC_NONE = 0, /* Not allowed */
434 OSD_SEC_OBJ_DESC_OBJ = 1 << 4, /* v1: also collection */
435 OSD_SEC_OBJ_DESC_PAR = 2 << 4, /* also root */
436 OSD_SEC_OBJ_DESC_COL = 3 << 4, /* v2 only */
440 * osd2r03:4.11.2.2 Capability format
442 struct osd_capability_head {
443 u8 format; /* low nibble */
444 u8 integrity_algorithm__key_version; /* MAKE_BYTE(integ_alg, key_ver) */
447 /*04*/ struct osd_timestamp expiration_time;
449 /*30*/ u8 discriminator[12];
450 /*42*/ struct osd_timestamp object_created_time;
451 /*48*/ u8 object_type;
452 /*49*/ u8 permissions_bit_mask[5];
454 /*55*/ u8 object_descriptor_type; /* high nibble */
458 struct osdv1_cap_object_descriptor {
461 /*56*/ __be32 policy_access_tag;
462 /*60*/ __be64 allowed_partition_id;
463 /*68*/ __be64 allowed_object_id;
464 /*76*/ __be32 reserved;
467 /*56*/ u8 object_descriptor[24];
472 struct osd_capability {
473 struct osd_capability_head h;
474 struct osdv1_cap_object_descriptor od;
478 * osd_sec_set_caps - set cap-bits into the capabilities header
480 * @cap: The osd_capability_head to set cap bits to.
481 * @bit_mask: Use an ORed list of enum osd_capability_bit_masks values
483 * permissions_bit_mask is unaligned use below to set into caps
484 * in a version independent way
486 static inline void osd_sec_set_caps(struct osd_capability_head *cap,
490 *Note: The bits above are defined LE order this is because this way
491 * they can grow in the future to more then 16, and still retain
492 * there constant values.
494 put_unaligned_le16(bit_mask, &cap->permissions_bit_mask);
497 #endif /* ndef __OSD_PROTOCOL_H__ */