| 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright © 2016 Intel Corporation |
| 4 | * |
| 5 | * Authors: |
| 6 | * Scott Bauer <scott.bauer@intel.com> |
| 7 | * Rafael Antognolli <rafael.antognolli@intel.com> |
| 8 | */ |
| 9 | |
| 10 | #define pr_fmt(fmt) KBUILD_MODNAME ":OPAL: " fmt |
| 11 | |
| 12 | #include <linux/delay.h> |
| 13 | #include <linux/device.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/list.h> |
| 16 | #include <linux/blkdev.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/uaccess.h> |
| 19 | #include <uapi/linux/sed-opal.h> |
| 20 | #include <linux/sed-opal.h> |
| 21 | #include <linux/sed-opal-key.h> |
| 22 | #include <linux/string.h> |
| 23 | #include <linux/kdev_t.h> |
| 24 | #include <linux/key.h> |
| 25 | #include <linux/key-type.h> |
| 26 | #include <keys/user-type.h> |
| 27 | |
| 28 | #include "opal_proto.h" |
| 29 | |
| 30 | #define IO_BUFFER_LENGTH 2048 |
| 31 | #define MAX_TOKS 64 |
| 32 | |
| 33 | /* Number of bytes needed by cmd_finalize. */ |
| 34 | #define CMD_FINALIZE_BYTES_NEEDED 7 |
| 35 | |
| 36 | static struct key *sed_opal_keyring; |
| 37 | |
| 38 | struct opal_step { |
| 39 | int (*fn)(struct opal_dev *dev, void *data); |
| 40 | void *data; |
| 41 | }; |
| 42 | typedef int (cont_fn)(struct opal_dev *dev); |
| 43 | |
| 44 | enum opal_atom_width { |
| 45 | OPAL_WIDTH_TINY, |
| 46 | OPAL_WIDTH_SHORT, |
| 47 | OPAL_WIDTH_MEDIUM, |
| 48 | OPAL_WIDTH_LONG, |
| 49 | OPAL_WIDTH_TOKEN |
| 50 | }; |
| 51 | |
| 52 | /* |
| 53 | * On the parsed response, we don't store again the toks that are already |
| 54 | * stored in the response buffer. Instead, for each token, we just store a |
| 55 | * pointer to the position in the buffer where the token starts, and the size |
| 56 | * of the token in bytes. |
| 57 | */ |
| 58 | struct opal_resp_tok { |
| 59 | const u8 *pos; |
| 60 | size_t len; |
| 61 | enum opal_response_token type; |
| 62 | enum opal_atom_width width; |
| 63 | union { |
| 64 | u64 u; |
| 65 | s64 s; |
| 66 | } stored; |
| 67 | }; |
| 68 | |
| 69 | /* |
| 70 | * From the response header it's not possible to know how many tokens there are |
| 71 | * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later |
| 72 | * if we start dealing with messages that have more than that, we can increase |
| 73 | * this number. This is done to avoid having to make two passes through the |
| 74 | * response, the first one counting how many tokens we have and the second one |
| 75 | * actually storing the positions. |
| 76 | */ |
| 77 | struct parsed_resp { |
| 78 | int num; |
| 79 | struct opal_resp_tok toks[MAX_TOKS]; |
| 80 | }; |
| 81 | |
| 82 | struct opal_dev { |
| 83 | u32 flags; |
| 84 | |
| 85 | void *data; |
| 86 | sec_send_recv *send_recv; |
| 87 | |
| 88 | struct mutex dev_lock; |
| 89 | u16 comid; |
| 90 | u32 hsn; |
| 91 | u32 tsn; |
| 92 | u64 align; /* alignment granularity */ |
| 93 | u64 lowest_lba; |
| 94 | u32 logical_block_size; |
| 95 | u8 align_required; /* ALIGN: 0 or 1 */ |
| 96 | |
| 97 | size_t pos; |
| 98 | u8 *cmd; |
| 99 | u8 *resp; |
| 100 | |
| 101 | struct parsed_resp parsed; |
| 102 | size_t prev_d_len; |
| 103 | void *prev_data; |
| 104 | |
| 105 | struct list_head unlk_lst; |
| 106 | }; |
| 107 | |
| 108 | |
| 109 | static const u8 opaluid[][OPAL_UID_LENGTH] = { |
| 110 | /* users */ |
| 111 | [OPAL_SMUID_UID] = |
| 112 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff }, |
| 113 | [OPAL_THISSP_UID] = |
| 114 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }, |
| 115 | [OPAL_ADMINSP_UID] = |
| 116 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 }, |
| 117 | [OPAL_LOCKINGSP_UID] = |
| 118 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 }, |
| 119 | [OPAL_ENTERPRISE_LOCKINGSP_UID] = |
| 120 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 }, |
| 121 | [OPAL_ANYBODY_UID] = |
| 122 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 }, |
| 123 | [OPAL_SID_UID] = |
| 124 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 }, |
| 125 | [OPAL_ADMIN1_UID] = |
| 126 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 }, |
| 127 | [OPAL_USER1_UID] = |
| 128 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 }, |
| 129 | [OPAL_USER2_UID] = |
| 130 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 }, |
| 131 | [OPAL_PSID_UID] = |
| 132 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 }, |
| 133 | [OPAL_ENTERPRISE_BANDMASTER0_UID] = |
| 134 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 }, |
| 135 | [OPAL_ENTERPRISE_ERASEMASTER_UID] = |
| 136 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 }, |
| 137 | |
| 138 | /* tables */ |
| 139 | [OPAL_TABLE_TABLE] = |
| 140 | { 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 }, |
| 141 | [OPAL_LOCKINGRANGE_GLOBAL] = |
| 142 | { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 }, |
| 143 | [OPAL_LOCKINGRANGE_ACE_START_TO_KEY] = |
| 144 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xD0, 0x01 }, |
| 145 | [OPAL_LOCKINGRANGE_ACE_RDLOCKED] = |
| 146 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 }, |
| 147 | [OPAL_LOCKINGRANGE_ACE_WRLOCKED] = |
| 148 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 }, |
| 149 | [OPAL_MBRCONTROL] = |
| 150 | { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 }, |
| 151 | [OPAL_MBR] = |
| 152 | { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 }, |
| 153 | [OPAL_AUTHORITY_TABLE] = |
| 154 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00}, |
| 155 | [OPAL_C_PIN_TABLE] = |
| 156 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00}, |
| 157 | [OPAL_LOCKING_INFO_TABLE] = |
| 158 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 }, |
| 159 | [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] = |
| 160 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 }, |
| 161 | [OPAL_DATASTORE] = |
| 162 | { 0x00, 0x00, 0x10, 0x01, 0x00, 0x00, 0x00, 0x00 }, |
| 163 | |
| 164 | /* C_PIN_TABLE object ID's */ |
| 165 | [OPAL_C_PIN_MSID] = |
| 166 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02}, |
| 167 | [OPAL_C_PIN_SID] = |
| 168 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01}, |
| 169 | [OPAL_C_PIN_ADMIN1] = |
| 170 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01}, |
| 171 | |
| 172 | /* half UID's (only first 4 bytes used) */ |
| 173 | [OPAL_HALF_UID_AUTHORITY_OBJ_REF] = |
| 174 | { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff }, |
| 175 | [OPAL_HALF_UID_BOOLEAN_ACE] = |
| 176 | { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff }, |
| 177 | |
| 178 | /* special value for omitted optional parameter */ |
| 179 | [OPAL_UID_HEXFF] = |
| 180 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, |
| 181 | }; |
| 182 | |
| 183 | /* |
| 184 | * TCG Storage SSC Methods. |
| 185 | * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 |
| 186 | * Section: 6.3 Assigned UIDs |
| 187 | */ |
| 188 | static const u8 opalmethod[][OPAL_METHOD_LENGTH] = { |
| 189 | [OPAL_PROPERTIES] = |
| 190 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 }, |
| 191 | [OPAL_STARTSESSION] = |
| 192 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 }, |
| 193 | [OPAL_REVERT] = |
| 194 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 }, |
| 195 | [OPAL_ACTIVATE] = |
| 196 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 }, |
| 197 | [OPAL_EGET] = |
| 198 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 }, |
| 199 | [OPAL_ESET] = |
| 200 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 }, |
| 201 | [OPAL_NEXT] = |
| 202 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 }, |
| 203 | [OPAL_EAUTHENTICATE] = |
| 204 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c }, |
| 205 | [OPAL_GETACL] = |
| 206 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d }, |
| 207 | [OPAL_GENKEY] = |
| 208 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 }, |
| 209 | [OPAL_REVERTSP] = |
| 210 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 }, |
| 211 | [OPAL_GET] = |
| 212 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 }, |
| 213 | [OPAL_SET] = |
| 214 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 }, |
| 215 | [OPAL_AUTHENTICATE] = |
| 216 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c }, |
| 217 | [OPAL_RANDOM] = |
| 218 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 }, |
| 219 | [OPAL_ERASE] = |
| 220 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 }, |
| 221 | }; |
| 222 | |
| 223 | static int end_opal_session_error(struct opal_dev *dev); |
| 224 | static int opal_discovery0_step(struct opal_dev *dev); |
| 225 | |
| 226 | struct opal_suspend_data { |
| 227 | struct opal_lock_unlock unlk; |
| 228 | u8 lr; |
| 229 | struct list_head node; |
| 230 | }; |
| 231 | |
| 232 | /* |
| 233 | * Derived from: |
| 234 | * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 |
| 235 | * Section: 5.1.5 Method Status Codes |
| 236 | */ |
| 237 | static const char * const opal_errors[] = { |
| 238 | "Success", |
| 239 | "Not Authorized", |
| 240 | "Unknown Error", |
| 241 | "SP Busy", |
| 242 | "SP Failed", |
| 243 | "SP Disabled", |
| 244 | "SP Frozen", |
| 245 | "No Sessions Available", |
| 246 | "Uniqueness Conflict", |
| 247 | "Insufficient Space", |
| 248 | "Insufficient Rows", |
| 249 | "Invalid Function", |
| 250 | "Invalid Parameter", |
| 251 | "Invalid Reference", |
| 252 | "Unknown Error", |
| 253 | "TPER Malfunction", |
| 254 | "Transaction Failure", |
| 255 | "Response Overflow", |
| 256 | "Authority Locked Out", |
| 257 | }; |
| 258 | |
| 259 | static const char *opal_error_to_human(int error) |
| 260 | { |
| 261 | if (error == 0x3f) |
| 262 | return "Failed"; |
| 263 | |
| 264 | if (error >= ARRAY_SIZE(opal_errors) || error < 0) |
| 265 | return "Unknown Error"; |
| 266 | |
| 267 | return opal_errors[error]; |
| 268 | } |
| 269 | |
| 270 | static void print_buffer(const u8 *ptr, u32 length) |
| 271 | { |
| 272 | #ifdef DEBUG |
| 273 | print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length); |
| 274 | pr_debug("\n"); |
| 275 | #endif |
| 276 | } |
| 277 | |
| 278 | /* |
| 279 | * Allocate/update a SED Opal key and add it to the SED Opal keyring. |
| 280 | */ |
| 281 | static int update_sed_opal_key(const char *desc, u_char *key_data, int keylen) |
| 282 | { |
| 283 | key_ref_t kr; |
| 284 | |
| 285 | if (!sed_opal_keyring) |
| 286 | return -ENOKEY; |
| 287 | |
| 288 | kr = key_create_or_update(make_key_ref(sed_opal_keyring, true), "user", |
| 289 | desc, (const void *)key_data, keylen, |
| 290 | KEY_USR_VIEW | KEY_USR_SEARCH | KEY_USR_WRITE, |
| 291 | KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_BUILT_IN | |
| 292 | KEY_ALLOC_BYPASS_RESTRICTION); |
| 293 | if (IS_ERR(kr)) { |
| 294 | pr_err("Error adding SED key (%ld)\n", PTR_ERR(kr)); |
| 295 | return PTR_ERR(kr); |
| 296 | } |
| 297 | |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Read a SED Opal key from the SED Opal keyring. |
| 303 | */ |
| 304 | static int read_sed_opal_key(const char *key_name, u_char *buffer, int buflen) |
| 305 | { |
| 306 | int ret; |
| 307 | key_ref_t kref; |
| 308 | struct key *key; |
| 309 | |
| 310 | if (!sed_opal_keyring) |
| 311 | return -ENOKEY; |
| 312 | |
| 313 | kref = keyring_search(make_key_ref(sed_opal_keyring, true), |
| 314 | &key_type_user, key_name, true); |
| 315 | |
| 316 | if (IS_ERR(kref)) |
| 317 | return PTR_ERR(kref); |
| 318 | |
| 319 | key = key_ref_to_ptr(kref); |
| 320 | down_read(&key->sem); |
| 321 | ret = key_validate(key); |
| 322 | if (ret == 0) { |
| 323 | if (buflen > key->datalen) |
| 324 | buflen = key->datalen; |
| 325 | |
| 326 | ret = key->type->read(key, (char *)buffer, buflen); |
| 327 | } |
| 328 | up_read(&key->sem); |
| 329 | |
| 330 | key_ref_put(kref); |
| 331 | |
| 332 | return ret; |
| 333 | } |
| 334 | |
| 335 | static int opal_get_key(struct opal_dev *dev, struct opal_key *key) |
| 336 | { |
| 337 | int ret = 0; |
| 338 | |
| 339 | switch (key->key_type) { |
| 340 | case OPAL_INCLUDED: |
| 341 | /* the key is ready to use */ |
| 342 | break; |
| 343 | case OPAL_KEYRING: |
| 344 | /* the key is in the keyring */ |
| 345 | ret = read_sed_opal_key(OPAL_AUTH_KEY, key->key, OPAL_KEY_MAX); |
| 346 | if (ret > 0) { |
| 347 | if (ret > U8_MAX) { |
| 348 | ret = -ENOSPC; |
| 349 | goto error; |
| 350 | } |
| 351 | key->key_len = ret; |
| 352 | key->key_type = OPAL_INCLUDED; |
| 353 | } |
| 354 | break; |
| 355 | default: |
| 356 | ret = -EINVAL; |
| 357 | break; |
| 358 | } |
| 359 | if (ret < 0) |
| 360 | goto error; |
| 361 | |
| 362 | /* must have a PEK by now or it's an error */ |
| 363 | if (key->key_type != OPAL_INCLUDED || key->key_len == 0) { |
| 364 | ret = -EINVAL; |
| 365 | goto error; |
| 366 | } |
| 367 | return 0; |
| 368 | error: |
| 369 | pr_debug("Error getting password: %d\n", ret); |
| 370 | return ret; |
| 371 | } |
| 372 | |
| 373 | static bool check_tper(const void *data) |
| 374 | { |
| 375 | const struct d0_tper_features *tper = data; |
| 376 | u8 flags = tper->supported_features; |
| 377 | |
| 378 | if (!(flags & TPER_SYNC_SUPPORTED)) { |
| 379 | pr_debug("TPer sync not supported. flags = %d\n", |
| 380 | tper->supported_features); |
| 381 | return false; |
| 382 | } |
| 383 | |
| 384 | return true; |
| 385 | } |
| 386 | |
| 387 | static bool check_lcksuppt(const void *data) |
| 388 | { |
| 389 | const struct d0_locking_features *lfeat = data; |
| 390 | u8 sup_feat = lfeat->supported_features; |
| 391 | |
| 392 | return !!(sup_feat & LOCKING_SUPPORTED_MASK); |
| 393 | } |
| 394 | |
| 395 | static bool check_lckenabled(const void *data) |
| 396 | { |
| 397 | const struct d0_locking_features *lfeat = data; |
| 398 | u8 sup_feat = lfeat->supported_features; |
| 399 | |
| 400 | return !!(sup_feat & LOCKING_ENABLED_MASK); |
| 401 | } |
| 402 | |
| 403 | static bool check_locked(const void *data) |
| 404 | { |
| 405 | const struct d0_locking_features *lfeat = data; |
| 406 | u8 sup_feat = lfeat->supported_features; |
| 407 | |
| 408 | return !!(sup_feat & LOCKED_MASK); |
| 409 | } |
| 410 | |
| 411 | static bool check_mbrenabled(const void *data) |
| 412 | { |
| 413 | const struct d0_locking_features *lfeat = data; |
| 414 | u8 sup_feat = lfeat->supported_features; |
| 415 | |
| 416 | return !!(sup_feat & MBR_ENABLED_MASK); |
| 417 | } |
| 418 | |
| 419 | static bool check_mbrdone(const void *data) |
| 420 | { |
| 421 | const struct d0_locking_features *lfeat = data; |
| 422 | u8 sup_feat = lfeat->supported_features; |
| 423 | |
| 424 | return !!(sup_feat & MBR_DONE_MASK); |
| 425 | } |
| 426 | |
| 427 | static bool check_sum(const void *data) |
| 428 | { |
| 429 | const struct d0_single_user_mode *sum = data; |
| 430 | u32 nlo = be32_to_cpu(sum->num_locking_objects); |
| 431 | |
| 432 | if (nlo == 0) { |
| 433 | pr_debug("Need at least one locking object.\n"); |
| 434 | return false; |
| 435 | } |
| 436 | |
| 437 | pr_debug("Number of locking objects: %d\n", nlo); |
| 438 | |
| 439 | return true; |
| 440 | } |
| 441 | |
| 442 | static u16 get_comid_v100(const void *data) |
| 443 | { |
| 444 | const struct d0_opal_v100 *v100 = data; |
| 445 | |
| 446 | return be16_to_cpu(v100->baseComID); |
| 447 | } |
| 448 | |
| 449 | static u16 get_comid_v200(const void *data) |
| 450 | { |
| 451 | const struct d0_opal_v200 *v200 = data; |
| 452 | |
| 453 | return be16_to_cpu(v200->baseComID); |
| 454 | } |
| 455 | |
| 456 | static int opal_send_cmd(struct opal_dev *dev) |
| 457 | { |
| 458 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
| 459 | dev->cmd, IO_BUFFER_LENGTH, |
| 460 | true); |
| 461 | } |
| 462 | |
| 463 | static int opal_recv_cmd(struct opal_dev *dev) |
| 464 | { |
| 465 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
| 466 | dev->resp, IO_BUFFER_LENGTH, |
| 467 | false); |
| 468 | } |
| 469 | |
| 470 | static int opal_recv_check(struct opal_dev *dev) |
| 471 | { |
| 472 | size_t buflen = IO_BUFFER_LENGTH; |
| 473 | void *buffer = dev->resp; |
| 474 | struct opal_header *hdr = buffer; |
| 475 | int ret; |
| 476 | |
| 477 | do { |
| 478 | pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n", |
| 479 | hdr->cp.outstandingData, |
| 480 | hdr->cp.minTransfer); |
| 481 | |
| 482 | if (hdr->cp.outstandingData == 0 || |
| 483 | hdr->cp.minTransfer != 0) |
| 484 | return 0; |
| 485 | |
| 486 | memset(buffer, 0, buflen); |
| 487 | ret = opal_recv_cmd(dev); |
| 488 | } while (!ret); |
| 489 | |
| 490 | return ret; |
| 491 | } |
| 492 | |
| 493 | static int opal_send_recv(struct opal_dev *dev, cont_fn *cont) |
| 494 | { |
| 495 | int ret; |
| 496 | |
| 497 | ret = opal_send_cmd(dev); |
| 498 | if (ret) |
| 499 | return ret; |
| 500 | ret = opal_recv_cmd(dev); |
| 501 | if (ret) |
| 502 | return ret; |
| 503 | ret = opal_recv_check(dev); |
| 504 | if (ret) |
| 505 | return ret; |
| 506 | return cont(dev); |
| 507 | } |
| 508 | |
| 509 | static void check_geometry(struct opal_dev *dev, const void *data) |
| 510 | { |
| 511 | const struct d0_geometry_features *geo = data; |
| 512 | |
| 513 | dev->align = be64_to_cpu(geo->alignment_granularity); |
| 514 | dev->lowest_lba = be64_to_cpu(geo->lowest_aligned_lba); |
| 515 | dev->logical_block_size = be32_to_cpu(geo->logical_block_size); |
| 516 | dev->align_required = geo->reserved01 & 1; |
| 517 | } |
| 518 | |
| 519 | static int execute_step(struct opal_dev *dev, |
| 520 | const struct opal_step *step, size_t stepIndex) |
| 521 | { |
| 522 | int error = step->fn(dev, step->data); |
| 523 | |
| 524 | if (error) { |
| 525 | pr_debug("Step %zu (%pS) failed with error %d: %s\n", |
| 526 | stepIndex, step->fn, error, |
| 527 | opal_error_to_human(error)); |
| 528 | } |
| 529 | |
| 530 | return error; |
| 531 | } |
| 532 | |
| 533 | static int execute_steps(struct opal_dev *dev, |
| 534 | const struct opal_step *steps, size_t n_steps) |
| 535 | { |
| 536 | size_t state = 0; |
| 537 | int error; |
| 538 | |
| 539 | /* first do a discovery0 */ |
| 540 | error = opal_discovery0_step(dev); |
| 541 | if (error) |
| 542 | return error; |
| 543 | |
| 544 | for (state = 0; state < n_steps; state++) { |
| 545 | error = execute_step(dev, &steps[state], state); |
| 546 | if (error) |
| 547 | goto out_error; |
| 548 | } |
| 549 | |
| 550 | return 0; |
| 551 | |
| 552 | out_error: |
| 553 | /* |
| 554 | * For each OPAL command the first step in steps starts some sort of |
| 555 | * session. If an error occurred in the initial discovery0 or if an |
| 556 | * error occurred in the first step (and thus stopping the loop with |
| 557 | * state == 0) then there was an error before or during the attempt to |
| 558 | * start a session. Therefore we shouldn't attempt to terminate a |
| 559 | * session, as one has not yet been created. |
| 560 | */ |
| 561 | if (state > 0) |
| 562 | end_opal_session_error(dev); |
| 563 | |
| 564 | return error; |
| 565 | } |
| 566 | |
| 567 | static int opal_discovery0_end(struct opal_dev *dev, void *data) |
| 568 | { |
| 569 | struct opal_discovery *discv_out = data; /* may be NULL */ |
| 570 | u8 __user *buf_out; |
| 571 | u64 len_out; |
| 572 | bool found_com_id = false, supported = true, single_user = false; |
| 573 | const struct d0_header *hdr = (struct d0_header *)dev->resp; |
| 574 | const u8 *epos = dev->resp, *cpos = dev->resp; |
| 575 | u16 comid = 0; |
| 576 | u32 hlen = be32_to_cpu(hdr->length); |
| 577 | |
| 578 | print_buffer(dev->resp, hlen); |
| 579 | dev->flags &= OPAL_FL_SUPPORTED; |
| 580 | |
| 581 | if (hlen > IO_BUFFER_LENGTH - sizeof(*hdr)) { |
| 582 | pr_debug("Discovery length overflows buffer (%zu+%u)/%u\n", |
| 583 | sizeof(*hdr), hlen, IO_BUFFER_LENGTH); |
| 584 | return -EFAULT; |
| 585 | } |
| 586 | |
| 587 | if (discv_out) { |
| 588 | buf_out = (u8 __user *)(uintptr_t)discv_out->data; |
| 589 | len_out = min_t(u64, discv_out->size, hlen); |
| 590 | if (buf_out && copy_to_user(buf_out, dev->resp, len_out)) |
| 591 | return -EFAULT; |
| 592 | |
| 593 | discv_out->size = hlen; /* actual size of data */ |
| 594 | } |
| 595 | |
| 596 | epos += hlen; /* end of buffer */ |
| 597 | cpos += sizeof(*hdr); /* current position on buffer */ |
| 598 | |
| 599 | while (cpos < epos && supported) { |
| 600 | const struct d0_features *body = |
| 601 | (const struct d0_features *)cpos; |
| 602 | |
| 603 | switch (be16_to_cpu(body->code)) { |
| 604 | case FC_TPER: |
| 605 | supported = check_tper(body->features); |
| 606 | break; |
| 607 | case FC_SINGLEUSER: |
| 608 | single_user = check_sum(body->features); |
| 609 | if (single_user) |
| 610 | dev->flags |= OPAL_FL_SUM_SUPPORTED; |
| 611 | break; |
| 612 | case FC_GEOMETRY: |
| 613 | check_geometry(dev, body); |
| 614 | break; |
| 615 | case FC_LOCKING: |
| 616 | if (check_lcksuppt(body->features)) |
| 617 | dev->flags |= OPAL_FL_LOCKING_SUPPORTED; |
| 618 | if (check_lckenabled(body->features)) |
| 619 | dev->flags |= OPAL_FL_LOCKING_ENABLED; |
| 620 | if (check_locked(body->features)) |
| 621 | dev->flags |= OPAL_FL_LOCKED; |
| 622 | if (check_mbrenabled(body->features)) |
| 623 | dev->flags |= OPAL_FL_MBR_ENABLED; |
| 624 | if (check_mbrdone(body->features)) |
| 625 | dev->flags |= OPAL_FL_MBR_DONE; |
| 626 | break; |
| 627 | case FC_ENTERPRISE: |
| 628 | case FC_DATASTORE: |
| 629 | /* some ignored properties */ |
| 630 | pr_debug("Found OPAL feature description: %d\n", |
| 631 | be16_to_cpu(body->code)); |
| 632 | break; |
| 633 | case FC_OPALV100: |
| 634 | comid = get_comid_v100(body->features); |
| 635 | found_com_id = true; |
| 636 | break; |
| 637 | case FC_OPALV200: |
| 638 | comid = get_comid_v200(body->features); |
| 639 | found_com_id = true; |
| 640 | break; |
| 641 | case 0xbfff ... 0xffff: |
| 642 | /* vendor specific, just ignore */ |
| 643 | break; |
| 644 | default: |
| 645 | pr_debug("OPAL Unknown feature: %d\n", |
| 646 | be16_to_cpu(body->code)); |
| 647 | |
| 648 | } |
| 649 | cpos += body->length + 4; |
| 650 | } |
| 651 | |
| 652 | if (!supported) { |
| 653 | pr_debug("This device is not Opal enabled. Not Supported!\n"); |
| 654 | return -EOPNOTSUPP; |
| 655 | } |
| 656 | |
| 657 | if (!single_user) |
| 658 | pr_debug("Device doesn't support single user mode\n"); |
| 659 | |
| 660 | |
| 661 | if (!found_com_id) { |
| 662 | pr_debug("Could not find OPAL comid for device. Returning early\n"); |
| 663 | return -EOPNOTSUPP; |
| 664 | } |
| 665 | |
| 666 | dev->comid = comid; |
| 667 | |
| 668 | return 0; |
| 669 | } |
| 670 | |
| 671 | static int opal_discovery0(struct opal_dev *dev, void *data) |
| 672 | { |
| 673 | int ret; |
| 674 | |
| 675 | memset(dev->resp, 0, IO_BUFFER_LENGTH); |
| 676 | dev->comid = OPAL_DISCOVERY_COMID; |
| 677 | ret = opal_recv_cmd(dev); |
| 678 | if (ret) |
| 679 | return ret; |
| 680 | |
| 681 | return opal_discovery0_end(dev, data); |
| 682 | } |
| 683 | |
| 684 | static int opal_discovery0_step(struct opal_dev *dev) |
| 685 | { |
| 686 | const struct opal_step discovery0_step = { |
| 687 | opal_discovery0, NULL |
| 688 | }; |
| 689 | |
| 690 | return execute_step(dev, &discovery0_step, 0); |
| 691 | } |
| 692 | |
| 693 | static size_t remaining_size(struct opal_dev *cmd) |
| 694 | { |
| 695 | return IO_BUFFER_LENGTH - cmd->pos; |
| 696 | } |
| 697 | |
| 698 | static bool can_add(int *err, struct opal_dev *cmd, size_t len) |
| 699 | { |
| 700 | if (*err) |
| 701 | return false; |
| 702 | |
| 703 | if (remaining_size(cmd) < len) { |
| 704 | pr_debug("Error adding %zu bytes: end of buffer.\n", len); |
| 705 | *err = -ERANGE; |
| 706 | return false; |
| 707 | } |
| 708 | |
| 709 | return true; |
| 710 | } |
| 711 | |
| 712 | static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok) |
| 713 | { |
| 714 | if (!can_add(err, cmd, 1)) |
| 715 | return; |
| 716 | |
| 717 | cmd->cmd[cmd->pos++] = tok; |
| 718 | } |
| 719 | |
| 720 | static void add_short_atom_header(struct opal_dev *cmd, bool bytestring, |
| 721 | bool has_sign, int len) |
| 722 | { |
| 723 | u8 atom; |
| 724 | int err = 0; |
| 725 | |
| 726 | atom = SHORT_ATOM_ID; |
| 727 | atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0; |
| 728 | atom |= has_sign ? SHORT_ATOM_SIGNED : 0; |
| 729 | atom |= len & SHORT_ATOM_LEN_MASK; |
| 730 | |
| 731 | add_token_u8(&err, cmd, atom); |
| 732 | } |
| 733 | |
| 734 | static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring, |
| 735 | bool has_sign, int len) |
| 736 | { |
| 737 | u8 header0; |
| 738 | |
| 739 | header0 = MEDIUM_ATOM_ID; |
| 740 | header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0; |
| 741 | header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0; |
| 742 | header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK; |
| 743 | |
| 744 | cmd->cmd[cmd->pos++] = header0; |
| 745 | cmd->cmd[cmd->pos++] = len; |
| 746 | } |
| 747 | |
| 748 | static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) |
| 749 | { |
| 750 | size_t len; |
| 751 | int msb; |
| 752 | |
| 753 | if (!(number & ~TINY_ATOM_DATA_MASK)) { |
| 754 | add_token_u8(err, cmd, number); |
| 755 | return; |
| 756 | } |
| 757 | |
| 758 | msb = fls64(number); |
| 759 | len = DIV_ROUND_UP(msb, 8); |
| 760 | |
| 761 | if (!can_add(err, cmd, len + 1)) { |
| 762 | pr_debug("Error adding u64: end of buffer.\n"); |
| 763 | return; |
| 764 | } |
| 765 | add_short_atom_header(cmd, false, false, len); |
| 766 | while (len--) |
| 767 | add_token_u8(err, cmd, number >> (len * 8)); |
| 768 | } |
| 769 | |
| 770 | static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len) |
| 771 | { |
| 772 | size_t header_len = 1; |
| 773 | bool is_short_atom = true; |
| 774 | |
| 775 | if (len & ~SHORT_ATOM_LEN_MASK) { |
| 776 | header_len = 2; |
| 777 | is_short_atom = false; |
| 778 | } |
| 779 | |
| 780 | if (!can_add(err, cmd, header_len + len)) { |
| 781 | pr_debug("Error adding bytestring: end of buffer.\n"); |
| 782 | return NULL; |
| 783 | } |
| 784 | |
| 785 | if (is_short_atom) |
| 786 | add_short_atom_header(cmd, true, false, len); |
| 787 | else |
| 788 | add_medium_atom_header(cmd, true, false, len); |
| 789 | |
| 790 | return &cmd->cmd[cmd->pos]; |
| 791 | } |
| 792 | |
| 793 | static void add_token_bytestring(int *err, struct opal_dev *cmd, |
| 794 | const u8 *bytestring, size_t len) |
| 795 | { |
| 796 | u8 *start; |
| 797 | |
| 798 | start = add_bytestring_header(err, cmd, len); |
| 799 | if (!start) |
| 800 | return; |
| 801 | memcpy(start, bytestring, len); |
| 802 | cmd->pos += len; |
| 803 | } |
| 804 | |
| 805 | static int build_locking_range(u8 *buffer, size_t length, u8 lr) |
| 806 | { |
| 807 | if (length > OPAL_UID_LENGTH) { |
| 808 | pr_debug("Can't build locking range. Length OOB\n"); |
| 809 | return -ERANGE; |
| 810 | } |
| 811 | |
| 812 | memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH); |
| 813 | |
| 814 | if (lr == 0) |
| 815 | return 0; |
| 816 | |
| 817 | buffer[5] = LOCKING_RANGE_NON_GLOBAL; |
| 818 | buffer[7] = lr; |
| 819 | |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | static int build_locking_user(u8 *buffer, size_t length, u8 lr) |
| 824 | { |
| 825 | if (length > OPAL_UID_LENGTH) { |
| 826 | pr_debug("Can't build locking range user. Length OOB\n"); |
| 827 | return -ERANGE; |
| 828 | } |
| 829 | |
| 830 | memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); |
| 831 | |
| 832 | buffer[7] = lr + 1; |
| 833 | |
| 834 | return 0; |
| 835 | } |
| 836 | |
| 837 | static void set_comid(struct opal_dev *cmd, u16 comid) |
| 838 | { |
| 839 | struct opal_header *hdr = (struct opal_header *)cmd->cmd; |
| 840 | |
| 841 | hdr->cp.extendedComID[0] = comid >> 8; |
| 842 | hdr->cp.extendedComID[1] = comid; |
| 843 | hdr->cp.extendedComID[2] = 0; |
| 844 | hdr->cp.extendedComID[3] = 0; |
| 845 | } |
| 846 | |
| 847 | static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn) |
| 848 | { |
| 849 | struct opal_header *hdr; |
| 850 | int err = 0; |
| 851 | |
| 852 | /* |
| 853 | * Close the parameter list opened from cmd_start. |
| 854 | * The number of bytes added must be equal to |
| 855 | * CMD_FINALIZE_BYTES_NEEDED. |
| 856 | */ |
| 857 | add_token_u8(&err, cmd, OPAL_ENDLIST); |
| 858 | |
| 859 | add_token_u8(&err, cmd, OPAL_ENDOFDATA); |
| 860 | add_token_u8(&err, cmd, OPAL_STARTLIST); |
| 861 | add_token_u8(&err, cmd, 0); |
| 862 | add_token_u8(&err, cmd, 0); |
| 863 | add_token_u8(&err, cmd, 0); |
| 864 | add_token_u8(&err, cmd, OPAL_ENDLIST); |
| 865 | |
| 866 | if (err) { |
| 867 | pr_debug("Error finalizing command.\n"); |
| 868 | return -EFAULT; |
| 869 | } |
| 870 | |
| 871 | hdr = (struct opal_header *) cmd->cmd; |
| 872 | |
| 873 | hdr->pkt.tsn = cpu_to_be32(tsn); |
| 874 | hdr->pkt.hsn = cpu_to_be32(hsn); |
| 875 | |
| 876 | hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr)); |
| 877 | while (cmd->pos % 4) { |
| 878 | if (cmd->pos >= IO_BUFFER_LENGTH) { |
| 879 | pr_debug("Error: Buffer overrun\n"); |
| 880 | return -ERANGE; |
| 881 | } |
| 882 | cmd->cmd[cmd->pos++] = 0; |
| 883 | } |
| 884 | hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) - |
| 885 | sizeof(hdr->pkt)); |
| 886 | hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp)); |
| 887 | |
| 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | static const struct opal_resp_tok *response_get_token( |
| 892 | const struct parsed_resp *resp, |
| 893 | int n) |
| 894 | { |
| 895 | const struct opal_resp_tok *tok; |
| 896 | |
| 897 | if (!resp) { |
| 898 | pr_debug("Response is NULL\n"); |
| 899 | return ERR_PTR(-EINVAL); |
| 900 | } |
| 901 | |
| 902 | if (n >= resp->num) { |
| 903 | pr_debug("Token number doesn't exist: %d, resp: %d\n", |
| 904 | n, resp->num); |
| 905 | return ERR_PTR(-EINVAL); |
| 906 | } |
| 907 | |
| 908 | tok = &resp->toks[n]; |
| 909 | if (tok->len == 0) { |
| 910 | pr_debug("Token length must be non-zero\n"); |
| 911 | return ERR_PTR(-EINVAL); |
| 912 | } |
| 913 | |
| 914 | return tok; |
| 915 | } |
| 916 | |
| 917 | static ssize_t response_parse_tiny(struct opal_resp_tok *tok, |
| 918 | const u8 *pos) |
| 919 | { |
| 920 | tok->pos = pos; |
| 921 | tok->len = 1; |
| 922 | tok->width = OPAL_WIDTH_TINY; |
| 923 | |
| 924 | if (pos[0] & TINY_ATOM_SIGNED) { |
| 925 | tok->type = OPAL_DTA_TOKENID_SINT; |
| 926 | } else { |
| 927 | tok->type = OPAL_DTA_TOKENID_UINT; |
| 928 | tok->stored.u = pos[0] & 0x3f; |
| 929 | } |
| 930 | |
| 931 | return tok->len; |
| 932 | } |
| 933 | |
| 934 | static ssize_t response_parse_short(struct opal_resp_tok *tok, |
| 935 | const u8 *pos) |
| 936 | { |
| 937 | tok->pos = pos; |
| 938 | tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1; |
| 939 | tok->width = OPAL_WIDTH_SHORT; |
| 940 | |
| 941 | if (pos[0] & SHORT_ATOM_BYTESTRING) { |
| 942 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; |
| 943 | } else if (pos[0] & SHORT_ATOM_SIGNED) { |
| 944 | tok->type = OPAL_DTA_TOKENID_SINT; |
| 945 | } else { |
| 946 | u64 u_integer = 0; |
| 947 | ssize_t i, b = 0; |
| 948 | |
| 949 | tok->type = OPAL_DTA_TOKENID_UINT; |
| 950 | if (tok->len > 9) { |
| 951 | pr_debug("uint64 with more than 8 bytes\n"); |
| 952 | return -EINVAL; |
| 953 | } |
| 954 | for (i = tok->len - 1; i > 0; i--) { |
| 955 | u_integer |= ((u64)pos[i] << (8 * b)); |
| 956 | b++; |
| 957 | } |
| 958 | tok->stored.u = u_integer; |
| 959 | } |
| 960 | |
| 961 | return tok->len; |
| 962 | } |
| 963 | |
| 964 | static ssize_t response_parse_medium(struct opal_resp_tok *tok, |
| 965 | const u8 *pos) |
| 966 | { |
| 967 | tok->pos = pos; |
| 968 | tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2; |
| 969 | tok->width = OPAL_WIDTH_MEDIUM; |
| 970 | |
| 971 | if (pos[0] & MEDIUM_ATOM_BYTESTRING) |
| 972 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; |
| 973 | else if (pos[0] & MEDIUM_ATOM_SIGNED) |
| 974 | tok->type = OPAL_DTA_TOKENID_SINT; |
| 975 | else |
| 976 | tok->type = OPAL_DTA_TOKENID_UINT; |
| 977 | |
| 978 | return tok->len; |
| 979 | } |
| 980 | |
| 981 | static ssize_t response_parse_long(struct opal_resp_tok *tok, |
| 982 | const u8 *pos) |
| 983 | { |
| 984 | tok->pos = pos; |
| 985 | tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4; |
| 986 | tok->width = OPAL_WIDTH_LONG; |
| 987 | |
| 988 | if (pos[0] & LONG_ATOM_BYTESTRING) |
| 989 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; |
| 990 | else if (pos[0] & LONG_ATOM_SIGNED) |
| 991 | tok->type = OPAL_DTA_TOKENID_SINT; |
| 992 | else |
| 993 | tok->type = OPAL_DTA_TOKENID_UINT; |
| 994 | |
| 995 | return tok->len; |
| 996 | } |
| 997 | |
| 998 | static ssize_t response_parse_token(struct opal_resp_tok *tok, |
| 999 | const u8 *pos) |
| 1000 | { |
| 1001 | tok->pos = pos; |
| 1002 | tok->len = 1; |
| 1003 | tok->type = OPAL_DTA_TOKENID_TOKEN; |
| 1004 | tok->width = OPAL_WIDTH_TOKEN; |
| 1005 | |
| 1006 | return tok->len; |
| 1007 | } |
| 1008 | |
| 1009 | static int response_parse(const u8 *buf, size_t length, |
| 1010 | struct parsed_resp *resp) |
| 1011 | { |
| 1012 | const struct opal_header *hdr; |
| 1013 | struct opal_resp_tok *iter; |
| 1014 | int num_entries = 0; |
| 1015 | int total; |
| 1016 | ssize_t token_length; |
| 1017 | const u8 *pos; |
| 1018 | u32 clen, plen, slen; |
| 1019 | |
| 1020 | if (!buf) |
| 1021 | return -EFAULT; |
| 1022 | |
| 1023 | if (!resp) |
| 1024 | return -EFAULT; |
| 1025 | |
| 1026 | hdr = (struct opal_header *)buf; |
| 1027 | pos = buf; |
| 1028 | pos += sizeof(*hdr); |
| 1029 | |
| 1030 | clen = be32_to_cpu(hdr->cp.length); |
| 1031 | plen = be32_to_cpu(hdr->pkt.length); |
| 1032 | slen = be32_to_cpu(hdr->subpkt.length); |
| 1033 | pr_debug("Response size: cp: %u, pkt: %u, subpkt: %u\n", |
| 1034 | clen, plen, slen); |
| 1035 | |
| 1036 | if (clen == 0 || plen == 0 || slen == 0 || |
| 1037 | slen > IO_BUFFER_LENGTH - sizeof(*hdr)) { |
| 1038 | pr_debug("Bad header length. cp: %u, pkt: %u, subpkt: %u\n", |
| 1039 | clen, plen, slen); |
| 1040 | print_buffer(pos, sizeof(*hdr)); |
| 1041 | return -EINVAL; |
| 1042 | } |
| 1043 | |
| 1044 | if (pos > buf + length) |
| 1045 | return -EFAULT; |
| 1046 | |
| 1047 | iter = resp->toks; |
| 1048 | total = slen; |
| 1049 | print_buffer(pos, total); |
| 1050 | while (total > 0) { |
| 1051 | if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */ |
| 1052 | token_length = response_parse_tiny(iter, pos); |
| 1053 | else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */ |
| 1054 | token_length = response_parse_short(iter, pos); |
| 1055 | else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */ |
| 1056 | token_length = response_parse_medium(iter, pos); |
| 1057 | else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */ |
| 1058 | token_length = response_parse_long(iter, pos); |
| 1059 | else if (pos[0] == EMPTY_ATOM_BYTE) /* empty atom */ |
| 1060 | token_length = 1; |
| 1061 | else /* TOKEN */ |
| 1062 | token_length = response_parse_token(iter, pos); |
| 1063 | |
| 1064 | if (token_length < 0) |
| 1065 | return token_length; |
| 1066 | |
| 1067 | if (pos[0] != EMPTY_ATOM_BYTE) |
| 1068 | num_entries++; |
| 1069 | |
| 1070 | pos += token_length; |
| 1071 | total -= token_length; |
| 1072 | iter++; |
| 1073 | } |
| 1074 | |
| 1075 | resp->num = num_entries; |
| 1076 | |
| 1077 | return 0; |
| 1078 | } |
| 1079 | |
| 1080 | static size_t response_get_string(const struct parsed_resp *resp, int n, |
| 1081 | const char **store) |
| 1082 | { |
| 1083 | u8 skip; |
| 1084 | const struct opal_resp_tok *tok; |
| 1085 | |
| 1086 | *store = NULL; |
| 1087 | tok = response_get_token(resp, n); |
| 1088 | if (IS_ERR(tok)) |
| 1089 | return 0; |
| 1090 | |
| 1091 | if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) { |
| 1092 | pr_debug("Token is not a byte string!\n"); |
| 1093 | return 0; |
| 1094 | } |
| 1095 | |
| 1096 | switch (tok->width) { |
| 1097 | case OPAL_WIDTH_TINY: |
| 1098 | case OPAL_WIDTH_SHORT: |
| 1099 | skip = 1; |
| 1100 | break; |
| 1101 | case OPAL_WIDTH_MEDIUM: |
| 1102 | skip = 2; |
| 1103 | break; |
| 1104 | case OPAL_WIDTH_LONG: |
| 1105 | skip = 4; |
| 1106 | break; |
| 1107 | default: |
| 1108 | pr_debug("Token has invalid width!\n"); |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | *store = tok->pos + skip; |
| 1113 | |
| 1114 | return tok->len - skip; |
| 1115 | } |
| 1116 | |
| 1117 | static u64 response_get_u64(const struct parsed_resp *resp, int n) |
| 1118 | { |
| 1119 | const struct opal_resp_tok *tok; |
| 1120 | |
| 1121 | tok = response_get_token(resp, n); |
| 1122 | if (IS_ERR(tok)) |
| 1123 | return 0; |
| 1124 | |
| 1125 | if (tok->type != OPAL_DTA_TOKENID_UINT) { |
| 1126 | pr_debug("Token is not unsigned int: %d\n", tok->type); |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
| 1130 | if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) { |
| 1131 | pr_debug("Atom is not short or tiny: %d\n", tok->width); |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
| 1135 | return tok->stored.u; |
| 1136 | } |
| 1137 | |
| 1138 | static bool response_token_matches(const struct opal_resp_tok *token, u8 match) |
| 1139 | { |
| 1140 | if (IS_ERR(token) || |
| 1141 | token->type != OPAL_DTA_TOKENID_TOKEN || |
| 1142 | token->pos[0] != match) |
| 1143 | return false; |
| 1144 | return true; |
| 1145 | } |
| 1146 | |
| 1147 | static u8 response_status(const struct parsed_resp *resp) |
| 1148 | { |
| 1149 | const struct opal_resp_tok *tok; |
| 1150 | |
| 1151 | tok = response_get_token(resp, 0); |
| 1152 | if (response_token_matches(tok, OPAL_ENDOFSESSION)) |
| 1153 | return 0; |
| 1154 | |
| 1155 | if (resp->num < 5) |
| 1156 | return DTAERROR_NO_METHOD_STATUS; |
| 1157 | |
| 1158 | tok = response_get_token(resp, resp->num - 5); |
| 1159 | if (!response_token_matches(tok, OPAL_STARTLIST)) |
| 1160 | return DTAERROR_NO_METHOD_STATUS; |
| 1161 | |
| 1162 | tok = response_get_token(resp, resp->num - 1); |
| 1163 | if (!response_token_matches(tok, OPAL_ENDLIST)) |
| 1164 | return DTAERROR_NO_METHOD_STATUS; |
| 1165 | |
| 1166 | return response_get_u64(resp, resp->num - 4); |
| 1167 | } |
| 1168 | |
| 1169 | /* Parses and checks for errors */ |
| 1170 | static int parse_and_check_status(struct opal_dev *dev) |
| 1171 | { |
| 1172 | int error; |
| 1173 | |
| 1174 | print_buffer(dev->cmd, dev->pos); |
| 1175 | |
| 1176 | error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed); |
| 1177 | if (error) { |
| 1178 | pr_debug("Couldn't parse response.\n"); |
| 1179 | return error; |
| 1180 | } |
| 1181 | |
| 1182 | return response_status(&dev->parsed); |
| 1183 | } |
| 1184 | |
| 1185 | static void clear_opal_cmd(struct opal_dev *dev) |
| 1186 | { |
| 1187 | dev->pos = sizeof(struct opal_header); |
| 1188 | memset(dev->cmd, 0, IO_BUFFER_LENGTH); |
| 1189 | } |
| 1190 | |
| 1191 | static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method) |
| 1192 | { |
| 1193 | int err = 0; |
| 1194 | |
| 1195 | clear_opal_cmd(dev); |
| 1196 | set_comid(dev, dev->comid); |
| 1197 | |
| 1198 | add_token_u8(&err, dev, OPAL_CALL); |
| 1199 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); |
| 1200 | add_token_bytestring(&err, dev, method, OPAL_METHOD_LENGTH); |
| 1201 | |
| 1202 | /* |
| 1203 | * Every method call is followed by its parameters enclosed within |
| 1204 | * OPAL_STARTLIST and OPAL_ENDLIST tokens. We automatically open the |
| 1205 | * parameter list here and close it later in cmd_finalize. |
| 1206 | */ |
| 1207 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1208 | |
| 1209 | return err; |
| 1210 | } |
| 1211 | |
| 1212 | static int start_opal_session_cont(struct opal_dev *dev) |
| 1213 | { |
| 1214 | u32 hsn, tsn; |
| 1215 | int error; |
| 1216 | |
| 1217 | error = parse_and_check_status(dev); |
| 1218 | if (error) |
| 1219 | return error; |
| 1220 | |
| 1221 | hsn = response_get_u64(&dev->parsed, 4); |
| 1222 | tsn = response_get_u64(&dev->parsed, 5); |
| 1223 | |
| 1224 | if (hsn != GENERIC_HOST_SESSION_NUM || tsn < FIRST_TPER_SESSION_NUM) { |
| 1225 | pr_debug("Couldn't authenticate session\n"); |
| 1226 | return -EPERM; |
| 1227 | } |
| 1228 | |
| 1229 | dev->hsn = hsn; |
| 1230 | dev->tsn = tsn; |
| 1231 | |
| 1232 | return 0; |
| 1233 | } |
| 1234 | |
| 1235 | static void add_suspend_info(struct opal_dev *dev, |
| 1236 | struct opal_suspend_data *sus) |
| 1237 | { |
| 1238 | struct opal_suspend_data *iter; |
| 1239 | |
| 1240 | list_for_each_entry(iter, &dev->unlk_lst, node) { |
| 1241 | if (iter->lr == sus->lr) { |
| 1242 | list_del(&iter->node); |
| 1243 | kfree(iter); |
| 1244 | break; |
| 1245 | } |
| 1246 | } |
| 1247 | list_add_tail(&sus->node, &dev->unlk_lst); |
| 1248 | } |
| 1249 | |
| 1250 | static int end_session_cont(struct opal_dev *dev) |
| 1251 | { |
| 1252 | dev->hsn = 0; |
| 1253 | dev->tsn = 0; |
| 1254 | |
| 1255 | return parse_and_check_status(dev); |
| 1256 | } |
| 1257 | |
| 1258 | static int finalize_and_send(struct opal_dev *dev, cont_fn cont) |
| 1259 | { |
| 1260 | int ret; |
| 1261 | |
| 1262 | ret = cmd_finalize(dev, dev->hsn, dev->tsn); |
| 1263 | if (ret) { |
| 1264 | pr_debug("Error finalizing command buffer: %d\n", ret); |
| 1265 | return ret; |
| 1266 | } |
| 1267 | |
| 1268 | print_buffer(dev->cmd, dev->pos); |
| 1269 | |
| 1270 | return opal_send_recv(dev, cont); |
| 1271 | } |
| 1272 | |
| 1273 | static int generic_get_columns(struct opal_dev *dev, const u8 *table, |
| 1274 | u64 start_column, u64 end_column) |
| 1275 | { |
| 1276 | int err; |
| 1277 | |
| 1278 | err = cmd_start(dev, table, opalmethod[OPAL_GET]); |
| 1279 | |
| 1280 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1281 | |
| 1282 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1283 | add_token_u8(&err, dev, OPAL_STARTCOLUMN); |
| 1284 | add_token_u64(&err, dev, start_column); |
| 1285 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1286 | |
| 1287 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1288 | add_token_u8(&err, dev, OPAL_ENDCOLUMN); |
| 1289 | add_token_u64(&err, dev, end_column); |
| 1290 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1291 | |
| 1292 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1293 | |
| 1294 | if (err) |
| 1295 | return err; |
| 1296 | |
| 1297 | return finalize_and_send(dev, parse_and_check_status); |
| 1298 | } |
| 1299 | |
| 1300 | /* |
| 1301 | * request @column from table @table on device @dev. On success, the column |
| 1302 | * data will be available in dev->resp->tok[4] |
| 1303 | */ |
| 1304 | static int generic_get_column(struct opal_dev *dev, const u8 *table, |
| 1305 | u64 column) |
| 1306 | { |
| 1307 | return generic_get_columns(dev, table, column, column); |
| 1308 | } |
| 1309 | |
| 1310 | /* |
| 1311 | * see TCG SAS 5.3.2.3 for a description of the available columns |
| 1312 | * |
| 1313 | * the result is provided in dev->resp->tok[4] |
| 1314 | */ |
| 1315 | static int generic_get_table_info(struct opal_dev *dev, const u8 *table_uid, |
| 1316 | u64 column) |
| 1317 | { |
| 1318 | u8 uid[OPAL_UID_LENGTH]; |
| 1319 | const unsigned int half = OPAL_UID_LENGTH_HALF; |
| 1320 | |
| 1321 | /* sed-opal UIDs can be split in two halves: |
| 1322 | * first: actual table index |
| 1323 | * second: relative index in the table |
| 1324 | * so we have to get the first half of the OPAL_TABLE_TABLE and use the |
| 1325 | * first part of the target table as relative index into that table |
| 1326 | */ |
| 1327 | memcpy(uid, opaluid[OPAL_TABLE_TABLE], half); |
| 1328 | memcpy(uid + half, table_uid, half); |
| 1329 | |
| 1330 | return generic_get_column(dev, uid, column); |
| 1331 | } |
| 1332 | |
| 1333 | static int gen_key(struct opal_dev *dev, void *data) |
| 1334 | { |
| 1335 | u8 uid[OPAL_UID_LENGTH]; |
| 1336 | int err; |
| 1337 | |
| 1338 | memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len)); |
| 1339 | kfree(dev->prev_data); |
| 1340 | dev->prev_data = NULL; |
| 1341 | |
| 1342 | err = cmd_start(dev, uid, opalmethod[OPAL_GENKEY]); |
| 1343 | |
| 1344 | if (err) { |
| 1345 | pr_debug("Error building gen key command\n"); |
| 1346 | return err; |
| 1347 | |
| 1348 | } |
| 1349 | |
| 1350 | return finalize_and_send(dev, parse_and_check_status); |
| 1351 | } |
| 1352 | |
| 1353 | static int get_active_key_cont(struct opal_dev *dev) |
| 1354 | { |
| 1355 | const char *activekey; |
| 1356 | size_t keylen; |
| 1357 | int error; |
| 1358 | |
| 1359 | error = parse_and_check_status(dev); |
| 1360 | if (error) |
| 1361 | return error; |
| 1362 | |
| 1363 | keylen = response_get_string(&dev->parsed, 4, &activekey); |
| 1364 | if (!activekey) { |
| 1365 | pr_debug("%s: Couldn't extract the Activekey from the response\n", |
| 1366 | __func__); |
| 1367 | return OPAL_INVAL_PARAM; |
| 1368 | } |
| 1369 | |
| 1370 | dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL); |
| 1371 | |
| 1372 | if (!dev->prev_data) |
| 1373 | return -ENOMEM; |
| 1374 | |
| 1375 | dev->prev_d_len = keylen; |
| 1376 | |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | static int get_active_key(struct opal_dev *dev, void *data) |
| 1381 | { |
| 1382 | u8 uid[OPAL_UID_LENGTH]; |
| 1383 | int err; |
| 1384 | u8 *lr = data; |
| 1385 | |
| 1386 | err = build_locking_range(uid, sizeof(uid), *lr); |
| 1387 | if (err) |
| 1388 | return err; |
| 1389 | |
| 1390 | err = generic_get_column(dev, uid, OPAL_ACTIVEKEY); |
| 1391 | if (err) |
| 1392 | return err; |
| 1393 | |
| 1394 | return get_active_key_cont(dev); |
| 1395 | } |
| 1396 | |
| 1397 | static int generic_table_write_data(struct opal_dev *dev, const u64 data, |
| 1398 | u64 offset, u64 size, const u8 *uid) |
| 1399 | { |
| 1400 | const u8 __user *src = (u8 __user *)(uintptr_t)data; |
| 1401 | u8 *dst; |
| 1402 | u64 len; |
| 1403 | size_t off = 0; |
| 1404 | int err; |
| 1405 | |
| 1406 | /* do we fit in the available space? */ |
| 1407 | err = generic_get_table_info(dev, uid, OPAL_TABLE_ROWS); |
| 1408 | if (err) { |
| 1409 | pr_debug("Couldn't get the table size\n"); |
| 1410 | return err; |
| 1411 | } |
| 1412 | |
| 1413 | len = response_get_u64(&dev->parsed, 4); |
| 1414 | if (size > len || offset > len - size) { |
| 1415 | pr_debug("Does not fit in the table (%llu vs. %llu)\n", |
| 1416 | offset + size, len); |
| 1417 | return -ENOSPC; |
| 1418 | } |
| 1419 | |
| 1420 | /* do the actual transmission(s) */ |
| 1421 | while (off < size) { |
| 1422 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
| 1423 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1424 | add_token_u8(&err, dev, OPAL_WHERE); |
| 1425 | add_token_u64(&err, dev, offset + off); |
| 1426 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1427 | |
| 1428 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1429 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1430 | |
| 1431 | /* |
| 1432 | * The bytestring header is either 1 or 2 bytes, so assume 2. |
| 1433 | * There also needs to be enough space to accommodate the |
| 1434 | * trailing OPAL_ENDNAME (1 byte) and tokens added by |
| 1435 | * cmd_finalize. |
| 1436 | */ |
| 1437 | len = min(remaining_size(dev) - (2+1+CMD_FINALIZE_BYTES_NEEDED), |
| 1438 | (size_t)(size - off)); |
| 1439 | pr_debug("Write bytes %zu+%llu/%llu\n", off, len, size); |
| 1440 | |
| 1441 | dst = add_bytestring_header(&err, dev, len); |
| 1442 | if (!dst) |
| 1443 | break; |
| 1444 | |
| 1445 | if (copy_from_user(dst, src + off, len)) { |
| 1446 | err = -EFAULT; |
| 1447 | break; |
| 1448 | } |
| 1449 | |
| 1450 | dev->pos += len; |
| 1451 | |
| 1452 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1453 | if (err) |
| 1454 | break; |
| 1455 | |
| 1456 | err = finalize_and_send(dev, parse_and_check_status); |
| 1457 | if (err) |
| 1458 | break; |
| 1459 | |
| 1460 | off += len; |
| 1461 | } |
| 1462 | |
| 1463 | return err; |
| 1464 | } |
| 1465 | |
| 1466 | static int generic_lr_enable_disable(struct opal_dev *dev, |
| 1467 | u8 *uid, bool rle, bool wle, |
| 1468 | bool rl, bool wl) |
| 1469 | { |
| 1470 | int err; |
| 1471 | |
| 1472 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
| 1473 | |
| 1474 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1475 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1476 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1477 | |
| 1478 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1479 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
| 1480 | add_token_u8(&err, dev, rle); |
| 1481 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1482 | |
| 1483 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1484 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
| 1485 | add_token_u8(&err, dev, wle); |
| 1486 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1487 | |
| 1488 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1489 | add_token_u8(&err, dev, OPAL_READLOCKED); |
| 1490 | add_token_u8(&err, dev, rl); |
| 1491 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1492 | |
| 1493 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1494 | add_token_u8(&err, dev, OPAL_WRITELOCKED); |
| 1495 | add_token_u8(&err, dev, wl); |
| 1496 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1497 | |
| 1498 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1499 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1500 | |
| 1501 | return err; |
| 1502 | } |
| 1503 | |
| 1504 | static inline int enable_global_lr(struct opal_dev *dev, u8 *uid, |
| 1505 | struct opal_user_lr_setup *setup) |
| 1506 | { |
| 1507 | int err; |
| 1508 | |
| 1509 | err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE, |
| 1510 | 0, 0); |
| 1511 | if (err) |
| 1512 | pr_debug("Failed to create enable global lr command\n"); |
| 1513 | |
| 1514 | return err; |
| 1515 | } |
| 1516 | |
| 1517 | static int setup_locking_range(struct opal_dev *dev, void *data) |
| 1518 | { |
| 1519 | u8 uid[OPAL_UID_LENGTH]; |
| 1520 | struct opal_user_lr_setup *setup = data; |
| 1521 | u8 lr; |
| 1522 | int err; |
| 1523 | |
| 1524 | lr = setup->session.opal_key.lr; |
| 1525 | err = build_locking_range(uid, sizeof(uid), lr); |
| 1526 | if (err) |
| 1527 | return err; |
| 1528 | |
| 1529 | if (lr == 0) |
| 1530 | err = enable_global_lr(dev, uid, setup); |
| 1531 | else { |
| 1532 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
| 1533 | |
| 1534 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1535 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1536 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1537 | |
| 1538 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1539 | add_token_u8(&err, dev, OPAL_RANGESTART); |
| 1540 | add_token_u64(&err, dev, setup->range_start); |
| 1541 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1542 | |
| 1543 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1544 | add_token_u8(&err, dev, OPAL_RANGELENGTH); |
| 1545 | add_token_u64(&err, dev, setup->range_length); |
| 1546 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1547 | |
| 1548 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1549 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
| 1550 | add_token_u64(&err, dev, !!setup->RLE); |
| 1551 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1552 | |
| 1553 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1554 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
| 1555 | add_token_u64(&err, dev, !!setup->WLE); |
| 1556 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1557 | |
| 1558 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1559 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1560 | } |
| 1561 | if (err) { |
| 1562 | pr_debug("Error building Setup Locking range command.\n"); |
| 1563 | return err; |
| 1564 | } |
| 1565 | |
| 1566 | return finalize_and_send(dev, parse_and_check_status); |
| 1567 | } |
| 1568 | |
| 1569 | static int response_get_column(const struct parsed_resp *resp, |
| 1570 | int *iter, |
| 1571 | u8 column, |
| 1572 | u64 *value) |
| 1573 | { |
| 1574 | const struct opal_resp_tok *tok; |
| 1575 | int n = *iter; |
| 1576 | u64 val; |
| 1577 | |
| 1578 | tok = response_get_token(resp, n); |
| 1579 | if (IS_ERR(tok)) |
| 1580 | return PTR_ERR(tok); |
| 1581 | |
| 1582 | if (!response_token_matches(tok, OPAL_STARTNAME)) { |
| 1583 | pr_debug("Unexpected response token type %d.\n", n); |
| 1584 | return OPAL_INVAL_PARAM; |
| 1585 | } |
| 1586 | n++; |
| 1587 | |
| 1588 | if (response_get_u64(resp, n) != column) { |
| 1589 | pr_debug("Token %d does not match expected column %u.\n", |
| 1590 | n, column); |
| 1591 | return OPAL_INVAL_PARAM; |
| 1592 | } |
| 1593 | n++; |
| 1594 | |
| 1595 | val = response_get_u64(resp, n); |
| 1596 | n++; |
| 1597 | |
| 1598 | tok = response_get_token(resp, n); |
| 1599 | if (IS_ERR(tok)) |
| 1600 | return PTR_ERR(tok); |
| 1601 | |
| 1602 | if (!response_token_matches(tok, OPAL_ENDNAME)) { |
| 1603 | pr_debug("Unexpected response token type %d.\n", n); |
| 1604 | return OPAL_INVAL_PARAM; |
| 1605 | } |
| 1606 | n++; |
| 1607 | |
| 1608 | *value = val; |
| 1609 | *iter = n; |
| 1610 | |
| 1611 | return 0; |
| 1612 | } |
| 1613 | |
| 1614 | static int locking_range_status(struct opal_dev *dev, void *data) |
| 1615 | { |
| 1616 | u8 lr_buffer[OPAL_UID_LENGTH]; |
| 1617 | u64 resp; |
| 1618 | bool rlocked, wlocked; |
| 1619 | int err, tok_n = 2; |
| 1620 | struct opal_lr_status *lrst = data; |
| 1621 | |
| 1622 | err = build_locking_range(lr_buffer, sizeof(lr_buffer), |
| 1623 | lrst->session.opal_key.lr); |
| 1624 | if (err) |
| 1625 | return err; |
| 1626 | |
| 1627 | err = generic_get_columns(dev, lr_buffer, OPAL_RANGESTART, |
| 1628 | OPAL_WRITELOCKED); |
| 1629 | if (err) { |
| 1630 | pr_debug("Couldn't get lr %u table columns %d to %d.\n", |
| 1631 | lrst->session.opal_key.lr, OPAL_RANGESTART, |
| 1632 | OPAL_WRITELOCKED); |
| 1633 | return err; |
| 1634 | } |
| 1635 | |
| 1636 | /* range start */ |
| 1637 | err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGESTART, |
| 1638 | &lrst->range_start); |
| 1639 | if (err) |
| 1640 | return err; |
| 1641 | |
| 1642 | /* range length */ |
| 1643 | err = response_get_column(&dev->parsed, &tok_n, OPAL_RANGELENGTH, |
| 1644 | &lrst->range_length); |
| 1645 | if (err) |
| 1646 | return err; |
| 1647 | |
| 1648 | /* RLE */ |
| 1649 | err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKENABLED, |
| 1650 | &resp); |
| 1651 | if (err) |
| 1652 | return err; |
| 1653 | |
| 1654 | lrst->RLE = !!resp; |
| 1655 | |
| 1656 | /* WLE */ |
| 1657 | err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKENABLED, |
| 1658 | &resp); |
| 1659 | if (err) |
| 1660 | return err; |
| 1661 | |
| 1662 | lrst->WLE = !!resp; |
| 1663 | |
| 1664 | /* read locked */ |
| 1665 | err = response_get_column(&dev->parsed, &tok_n, OPAL_READLOCKED, &resp); |
| 1666 | if (err) |
| 1667 | return err; |
| 1668 | |
| 1669 | rlocked = !!resp; |
| 1670 | |
| 1671 | /* write locked */ |
| 1672 | err = response_get_column(&dev->parsed, &tok_n, OPAL_WRITELOCKED, &resp); |
| 1673 | if (err) |
| 1674 | return err; |
| 1675 | |
| 1676 | wlocked = !!resp; |
| 1677 | |
| 1678 | /* opal_lock_state can not map 'read locked' only state. */ |
| 1679 | lrst->l_state = OPAL_RW; |
| 1680 | if (rlocked && wlocked) |
| 1681 | lrst->l_state = OPAL_LK; |
| 1682 | else if (wlocked) |
| 1683 | lrst->l_state = OPAL_RO; |
| 1684 | else if (rlocked) { |
| 1685 | pr_debug("Can not report read locked only state.\n"); |
| 1686 | return -EINVAL; |
| 1687 | } |
| 1688 | |
| 1689 | return 0; |
| 1690 | } |
| 1691 | |
| 1692 | static int start_generic_opal_session(struct opal_dev *dev, |
| 1693 | enum opal_uid auth, |
| 1694 | enum opal_uid sp_type, |
| 1695 | const char *key, |
| 1696 | u8 key_len) |
| 1697 | { |
| 1698 | u32 hsn; |
| 1699 | int err; |
| 1700 | |
| 1701 | if (key == NULL && auth != OPAL_ANYBODY_UID) |
| 1702 | return OPAL_INVAL_PARAM; |
| 1703 | |
| 1704 | hsn = GENERIC_HOST_SESSION_NUM; |
| 1705 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], |
| 1706 | opalmethod[OPAL_STARTSESSION]); |
| 1707 | |
| 1708 | add_token_u64(&err, dev, hsn); |
| 1709 | add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH); |
| 1710 | add_token_u8(&err, dev, 1); |
| 1711 | |
| 1712 | switch (auth) { |
| 1713 | case OPAL_ANYBODY_UID: |
| 1714 | break; |
| 1715 | case OPAL_ADMIN1_UID: |
| 1716 | case OPAL_SID_UID: |
| 1717 | case OPAL_PSID_UID: |
| 1718 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1719 | add_token_u8(&err, dev, 0); /* HostChallenge */ |
| 1720 | add_token_bytestring(&err, dev, key, key_len); |
| 1721 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1722 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1723 | add_token_u8(&err, dev, 3); /* HostSignAuth */ |
| 1724 | add_token_bytestring(&err, dev, opaluid[auth], |
| 1725 | OPAL_UID_LENGTH); |
| 1726 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1727 | break; |
| 1728 | default: |
| 1729 | pr_debug("Cannot start Admin SP session with auth %d\n", auth); |
| 1730 | return OPAL_INVAL_PARAM; |
| 1731 | } |
| 1732 | |
| 1733 | if (err) { |
| 1734 | pr_debug("Error building start adminsp session command.\n"); |
| 1735 | return err; |
| 1736 | } |
| 1737 | |
| 1738 | return finalize_and_send(dev, start_opal_session_cont); |
| 1739 | } |
| 1740 | |
| 1741 | static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data) |
| 1742 | { |
| 1743 | return start_generic_opal_session(dev, OPAL_ANYBODY_UID, |
| 1744 | OPAL_ADMINSP_UID, NULL, 0); |
| 1745 | } |
| 1746 | |
| 1747 | static int start_SIDASP_opal_session(struct opal_dev *dev, void *data) |
| 1748 | { |
| 1749 | int ret; |
| 1750 | const u8 *key = dev->prev_data; |
| 1751 | |
| 1752 | if (!key) { |
| 1753 | const struct opal_key *okey = data; |
| 1754 | |
| 1755 | ret = start_generic_opal_session(dev, OPAL_SID_UID, |
| 1756 | OPAL_ADMINSP_UID, |
| 1757 | okey->key, |
| 1758 | okey->key_len); |
| 1759 | } else { |
| 1760 | ret = start_generic_opal_session(dev, OPAL_SID_UID, |
| 1761 | OPAL_ADMINSP_UID, |
| 1762 | key, dev->prev_d_len); |
| 1763 | kfree(key); |
| 1764 | dev->prev_data = NULL; |
| 1765 | } |
| 1766 | |
| 1767 | return ret; |
| 1768 | } |
| 1769 | |
| 1770 | static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data) |
| 1771 | { |
| 1772 | struct opal_key *key = data; |
| 1773 | |
| 1774 | return start_generic_opal_session(dev, OPAL_ADMIN1_UID, |
| 1775 | OPAL_LOCKINGSP_UID, |
| 1776 | key->key, key->key_len); |
| 1777 | } |
| 1778 | |
| 1779 | static int start_PSID_opal_session(struct opal_dev *dev, void *data) |
| 1780 | { |
| 1781 | const struct opal_key *okey = data; |
| 1782 | |
| 1783 | return start_generic_opal_session(dev, OPAL_PSID_UID, |
| 1784 | OPAL_ADMINSP_UID, |
| 1785 | okey->key, |
| 1786 | okey->key_len); |
| 1787 | } |
| 1788 | |
| 1789 | static int start_auth_opal_session(struct opal_dev *dev, void *data) |
| 1790 | { |
| 1791 | struct opal_session_info *session = data; |
| 1792 | u8 lk_ul_user[OPAL_UID_LENGTH]; |
| 1793 | size_t keylen = session->opal_key.key_len; |
| 1794 | int err = 0; |
| 1795 | |
| 1796 | u8 *key = session->opal_key.key; |
| 1797 | u32 hsn = GENERIC_HOST_SESSION_NUM; |
| 1798 | |
| 1799 | if (session->sum) |
| 1800 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
| 1801 | session->opal_key.lr); |
| 1802 | else if (session->who != OPAL_ADMIN1 && !session->sum) |
| 1803 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
| 1804 | session->who - 1); |
| 1805 | else |
| 1806 | memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH); |
| 1807 | |
| 1808 | if (err) |
| 1809 | return err; |
| 1810 | |
| 1811 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], |
| 1812 | opalmethod[OPAL_STARTSESSION]); |
| 1813 | |
| 1814 | add_token_u64(&err, dev, hsn); |
| 1815 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], |
| 1816 | OPAL_UID_LENGTH); |
| 1817 | add_token_u8(&err, dev, 1); |
| 1818 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1819 | add_token_u8(&err, dev, 0); |
| 1820 | add_token_bytestring(&err, dev, key, keylen); |
| 1821 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1822 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1823 | add_token_u8(&err, dev, 3); |
| 1824 | add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH); |
| 1825 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1826 | |
| 1827 | if (err) { |
| 1828 | pr_debug("Error building STARTSESSION command.\n"); |
| 1829 | return err; |
| 1830 | } |
| 1831 | |
| 1832 | return finalize_and_send(dev, start_opal_session_cont); |
| 1833 | } |
| 1834 | |
| 1835 | static int revert_tper(struct opal_dev *dev, void *data) |
| 1836 | { |
| 1837 | int err; |
| 1838 | |
| 1839 | err = cmd_start(dev, opaluid[OPAL_ADMINSP_UID], |
| 1840 | opalmethod[OPAL_REVERT]); |
| 1841 | if (err) { |
| 1842 | pr_debug("Error building REVERT TPER command.\n"); |
| 1843 | return err; |
| 1844 | } |
| 1845 | |
| 1846 | return finalize_and_send(dev, parse_and_check_status); |
| 1847 | } |
| 1848 | |
| 1849 | static int internal_activate_user(struct opal_dev *dev, void *data) |
| 1850 | { |
| 1851 | struct opal_session_info *session = data; |
| 1852 | u8 uid[OPAL_UID_LENGTH]; |
| 1853 | int err; |
| 1854 | |
| 1855 | memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); |
| 1856 | uid[7] = session->who; |
| 1857 | |
| 1858 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
| 1859 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1860 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1861 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1862 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1863 | add_token_u8(&err, dev, 5); /* Enabled */ |
| 1864 | add_token_u8(&err, dev, OPAL_TRUE); |
| 1865 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1866 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1867 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1868 | |
| 1869 | if (err) { |
| 1870 | pr_debug("Error building Activate UserN command.\n"); |
| 1871 | return err; |
| 1872 | } |
| 1873 | |
| 1874 | return finalize_and_send(dev, parse_and_check_status); |
| 1875 | } |
| 1876 | |
| 1877 | static int revert_lsp(struct opal_dev *dev, void *data) |
| 1878 | { |
| 1879 | struct opal_revert_lsp *rev = data; |
| 1880 | int err; |
| 1881 | |
| 1882 | err = cmd_start(dev, opaluid[OPAL_THISSP_UID], |
| 1883 | opalmethod[OPAL_REVERTSP]); |
| 1884 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1885 | add_token_u64(&err, dev, OPAL_KEEP_GLOBAL_RANGE_KEY); |
| 1886 | add_token_u8(&err, dev, (rev->options & OPAL_PRESERVE) ? |
| 1887 | OPAL_TRUE : OPAL_FALSE); |
| 1888 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1889 | if (err) { |
| 1890 | pr_debug("Error building REVERT SP command.\n"); |
| 1891 | return err; |
| 1892 | } |
| 1893 | |
| 1894 | return finalize_and_send(dev, parse_and_check_status); |
| 1895 | } |
| 1896 | |
| 1897 | static int erase_locking_range(struct opal_dev *dev, void *data) |
| 1898 | { |
| 1899 | struct opal_session_info *session = data; |
| 1900 | u8 uid[OPAL_UID_LENGTH]; |
| 1901 | int err; |
| 1902 | |
| 1903 | if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0) |
| 1904 | return -ERANGE; |
| 1905 | |
| 1906 | err = cmd_start(dev, uid, opalmethod[OPAL_ERASE]); |
| 1907 | |
| 1908 | if (err) { |
| 1909 | pr_debug("Error building Erase Locking Range Command.\n"); |
| 1910 | return err; |
| 1911 | } |
| 1912 | |
| 1913 | return finalize_and_send(dev, parse_and_check_status); |
| 1914 | } |
| 1915 | |
| 1916 | static int set_mbr_done(struct opal_dev *dev, void *data) |
| 1917 | { |
| 1918 | u8 *mbr_done_tf = data; |
| 1919 | int err; |
| 1920 | |
| 1921 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
| 1922 | opalmethod[OPAL_SET]); |
| 1923 | |
| 1924 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1925 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1926 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1927 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1928 | add_token_u8(&err, dev, OPAL_MBRDONE); |
| 1929 | add_token_u8(&err, dev, *mbr_done_tf); /* Done T or F */ |
| 1930 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1931 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1932 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1933 | |
| 1934 | if (err) { |
| 1935 | pr_debug("Error Building set MBR Done command\n"); |
| 1936 | return err; |
| 1937 | } |
| 1938 | |
| 1939 | return finalize_and_send(dev, parse_and_check_status); |
| 1940 | } |
| 1941 | |
| 1942 | static int set_mbr_enable_disable(struct opal_dev *dev, void *data) |
| 1943 | { |
| 1944 | u8 *mbr_en_dis = data; |
| 1945 | int err; |
| 1946 | |
| 1947 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
| 1948 | opalmethod[OPAL_SET]); |
| 1949 | |
| 1950 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1951 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1952 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1953 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1954 | add_token_u8(&err, dev, OPAL_MBRENABLE); |
| 1955 | add_token_u8(&err, dev, *mbr_en_dis); |
| 1956 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1957 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1958 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1959 | |
| 1960 | if (err) { |
| 1961 | pr_debug("Error Building set MBR done command\n"); |
| 1962 | return err; |
| 1963 | } |
| 1964 | |
| 1965 | return finalize_and_send(dev, parse_and_check_status); |
| 1966 | } |
| 1967 | |
| 1968 | static int write_shadow_mbr(struct opal_dev *dev, void *data) |
| 1969 | { |
| 1970 | struct opal_shadow_mbr *shadow = data; |
| 1971 | |
| 1972 | return generic_table_write_data(dev, shadow->data, shadow->offset, |
| 1973 | shadow->size, opaluid[OPAL_MBR]); |
| 1974 | } |
| 1975 | |
| 1976 | static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid, |
| 1977 | struct opal_dev *dev) |
| 1978 | { |
| 1979 | int err; |
| 1980 | |
| 1981 | err = cmd_start(dev, cpin_uid, opalmethod[OPAL_SET]); |
| 1982 | |
| 1983 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1984 | add_token_u8(&err, dev, OPAL_VALUES); |
| 1985 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 1986 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 1987 | add_token_u8(&err, dev, OPAL_PIN); |
| 1988 | add_token_bytestring(&err, dev, key, key_len); |
| 1989 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1990 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 1991 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 1992 | |
| 1993 | return err; |
| 1994 | } |
| 1995 | |
| 1996 | static int set_new_pw(struct opal_dev *dev, void *data) |
| 1997 | { |
| 1998 | u8 cpin_uid[OPAL_UID_LENGTH]; |
| 1999 | struct opal_session_info *usr = data; |
| 2000 | |
| 2001 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH); |
| 2002 | |
| 2003 | if (usr->who != OPAL_ADMIN1) { |
| 2004 | cpin_uid[5] = 0x03; |
| 2005 | if (usr->sum) |
| 2006 | cpin_uid[7] = usr->opal_key.lr + 1; |
| 2007 | else |
| 2008 | cpin_uid[7] = usr->who; |
| 2009 | } |
| 2010 | |
| 2011 | if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len, |
| 2012 | cpin_uid, dev)) { |
| 2013 | pr_debug("Error building set password command.\n"); |
| 2014 | return -ERANGE; |
| 2015 | } |
| 2016 | |
| 2017 | return finalize_and_send(dev, parse_and_check_status); |
| 2018 | } |
| 2019 | |
| 2020 | static int set_sid_cpin_pin(struct opal_dev *dev, void *data) |
| 2021 | { |
| 2022 | u8 cpin_uid[OPAL_UID_LENGTH]; |
| 2023 | struct opal_key *key = data; |
| 2024 | |
| 2025 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH); |
| 2026 | |
| 2027 | if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) { |
| 2028 | pr_debug("Error building Set SID cpin\n"); |
| 2029 | return -ERANGE; |
| 2030 | } |
| 2031 | return finalize_and_send(dev, parse_and_check_status); |
| 2032 | } |
| 2033 | |
| 2034 | static void add_authority_object_ref(int *err, |
| 2035 | struct opal_dev *dev, |
| 2036 | const u8 *uid, |
| 2037 | size_t uid_len) |
| 2038 | { |
| 2039 | add_token_u8(err, dev, OPAL_STARTNAME); |
| 2040 | add_token_bytestring(err, dev, |
| 2041 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], |
| 2042 | OPAL_UID_LENGTH/2); |
| 2043 | add_token_bytestring(err, dev, uid, uid_len); |
| 2044 | add_token_u8(err, dev, OPAL_ENDNAME); |
| 2045 | } |
| 2046 | |
| 2047 | static void add_boolean_object_ref(int *err, |
| 2048 | struct opal_dev *dev, |
| 2049 | u8 boolean_op) |
| 2050 | { |
| 2051 | add_token_u8(err, dev, OPAL_STARTNAME); |
| 2052 | add_token_bytestring(err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE], |
| 2053 | OPAL_UID_LENGTH/2); |
| 2054 | add_token_u8(err, dev, boolean_op); |
| 2055 | add_token_u8(err, dev, OPAL_ENDNAME); |
| 2056 | } |
| 2057 | |
| 2058 | static int set_lr_boolean_ace(struct opal_dev *dev, |
| 2059 | unsigned int opal_uid, |
| 2060 | u8 lr, |
| 2061 | const u8 *users, |
| 2062 | size_t users_len) |
| 2063 | { |
| 2064 | u8 lr_buffer[OPAL_UID_LENGTH]; |
| 2065 | u8 user_uid[OPAL_UID_LENGTH]; |
| 2066 | u8 u; |
| 2067 | int err; |
| 2068 | |
| 2069 | memcpy(lr_buffer, opaluid[opal_uid], OPAL_UID_LENGTH); |
| 2070 | lr_buffer[7] = lr; |
| 2071 | |
| 2072 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
| 2073 | |
| 2074 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2075 | add_token_u8(&err, dev, OPAL_VALUES); |
| 2076 | |
| 2077 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 2078 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2079 | add_token_u8(&err, dev, 3); |
| 2080 | |
| 2081 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 2082 | |
| 2083 | for (u = 0; u < users_len; u++) { |
| 2084 | if (users[u] == OPAL_ADMIN1) |
| 2085 | memcpy(user_uid, opaluid[OPAL_ADMIN1_UID], |
| 2086 | OPAL_UID_LENGTH); |
| 2087 | else { |
| 2088 | memcpy(user_uid, opaluid[OPAL_USER1_UID], |
| 2089 | OPAL_UID_LENGTH); |
| 2090 | user_uid[7] = users[u]; |
| 2091 | } |
| 2092 | |
| 2093 | add_authority_object_ref(&err, dev, user_uid, sizeof(user_uid)); |
| 2094 | |
| 2095 | /* |
| 2096 | * Add boolean operator in postfix only with |
| 2097 | * two or more authorities being added in ACE |
| 2098 | * expresion. |
| 2099 | * */ |
| 2100 | if (u > 0) |
| 2101 | add_boolean_object_ref(&err, dev, OPAL_BOOLEAN_OR); |
| 2102 | } |
| 2103 | |
| 2104 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 2105 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2106 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 2107 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2108 | |
| 2109 | return err; |
| 2110 | } |
| 2111 | |
| 2112 | static int add_user_to_lr(struct opal_dev *dev, void *data) |
| 2113 | { |
| 2114 | int err; |
| 2115 | struct opal_lock_unlock *lkul = data; |
| 2116 | const u8 users[] = { |
| 2117 | lkul->session.who |
| 2118 | }; |
| 2119 | |
| 2120 | err = set_lr_boolean_ace(dev, |
| 2121 | lkul->l_state == OPAL_RW ? |
| 2122 | OPAL_LOCKINGRANGE_ACE_WRLOCKED : |
| 2123 | OPAL_LOCKINGRANGE_ACE_RDLOCKED, |
| 2124 | lkul->session.opal_key.lr, users, |
| 2125 | ARRAY_SIZE(users)); |
| 2126 | if (err) { |
| 2127 | pr_debug("Error building add user to locking range command.\n"); |
| 2128 | return err; |
| 2129 | } |
| 2130 | |
| 2131 | return finalize_and_send(dev, parse_and_check_status); |
| 2132 | } |
| 2133 | |
| 2134 | static int add_user_to_lr_ace(struct opal_dev *dev, void *data) |
| 2135 | { |
| 2136 | int err; |
| 2137 | struct opal_lock_unlock *lkul = data; |
| 2138 | const u8 users[] = { |
| 2139 | OPAL_ADMIN1, |
| 2140 | lkul->session.who |
| 2141 | }; |
| 2142 | |
| 2143 | err = set_lr_boolean_ace(dev, OPAL_LOCKINGRANGE_ACE_START_TO_KEY, |
| 2144 | lkul->session.opal_key.lr, users, |
| 2145 | ARRAY_SIZE(users)); |
| 2146 | |
| 2147 | if (err) { |
| 2148 | pr_debug("Error building add user to locking ranges ACEs.\n"); |
| 2149 | return err; |
| 2150 | } |
| 2151 | |
| 2152 | return finalize_and_send(dev, parse_and_check_status); |
| 2153 | } |
| 2154 | |
| 2155 | static int lock_unlock_locking_range(struct opal_dev *dev, void *data) |
| 2156 | { |
| 2157 | u8 lr_buffer[OPAL_UID_LENGTH]; |
| 2158 | struct opal_lock_unlock *lkul = data; |
| 2159 | u8 read_locked = 1, write_locked = 1; |
| 2160 | int err; |
| 2161 | |
| 2162 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
| 2163 | lkul->session.opal_key.lr) < 0) |
| 2164 | return -ERANGE; |
| 2165 | |
| 2166 | switch (lkul->l_state) { |
| 2167 | case OPAL_RO: |
| 2168 | read_locked = 0; |
| 2169 | write_locked = 1; |
| 2170 | break; |
| 2171 | case OPAL_RW: |
| 2172 | read_locked = 0; |
| 2173 | write_locked = 0; |
| 2174 | break; |
| 2175 | case OPAL_LK: |
| 2176 | /* vars are initialized to locked */ |
| 2177 | break; |
| 2178 | default: |
| 2179 | pr_debug("Tried to set an invalid locking state... returning to uland\n"); |
| 2180 | return OPAL_INVAL_PARAM; |
| 2181 | } |
| 2182 | |
| 2183 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
| 2184 | |
| 2185 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2186 | add_token_u8(&err, dev, OPAL_VALUES); |
| 2187 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 2188 | |
| 2189 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2190 | add_token_u8(&err, dev, OPAL_READLOCKED); |
| 2191 | add_token_u8(&err, dev, read_locked); |
| 2192 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2193 | |
| 2194 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2195 | add_token_u8(&err, dev, OPAL_WRITELOCKED); |
| 2196 | add_token_u8(&err, dev, write_locked); |
| 2197 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2198 | |
| 2199 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 2200 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2201 | |
| 2202 | if (err) { |
| 2203 | pr_debug("Error building SET command.\n"); |
| 2204 | return err; |
| 2205 | } |
| 2206 | |
| 2207 | return finalize_and_send(dev, parse_and_check_status); |
| 2208 | } |
| 2209 | |
| 2210 | |
| 2211 | static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data) |
| 2212 | { |
| 2213 | u8 lr_buffer[OPAL_UID_LENGTH]; |
| 2214 | u8 read_locked = 1, write_locked = 1; |
| 2215 | struct opal_lock_unlock *lkul = data; |
| 2216 | int ret; |
| 2217 | |
| 2218 | clear_opal_cmd(dev); |
| 2219 | set_comid(dev, dev->comid); |
| 2220 | |
| 2221 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
| 2222 | lkul->session.opal_key.lr) < 0) |
| 2223 | return -ERANGE; |
| 2224 | |
| 2225 | switch (lkul->l_state) { |
| 2226 | case OPAL_RO: |
| 2227 | read_locked = 0; |
| 2228 | write_locked = 1; |
| 2229 | break; |
| 2230 | case OPAL_RW: |
| 2231 | read_locked = 0; |
| 2232 | write_locked = 0; |
| 2233 | break; |
| 2234 | case OPAL_LK: |
| 2235 | /* vars are initialized to locked */ |
| 2236 | break; |
| 2237 | default: |
| 2238 | pr_debug("Tried to set an invalid locking state.\n"); |
| 2239 | return OPAL_INVAL_PARAM; |
| 2240 | } |
| 2241 | ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1, |
| 2242 | read_locked, write_locked); |
| 2243 | |
| 2244 | if (ret < 0) { |
| 2245 | pr_debug("Error building SET command.\n"); |
| 2246 | return ret; |
| 2247 | } |
| 2248 | |
| 2249 | return finalize_and_send(dev, parse_and_check_status); |
| 2250 | } |
| 2251 | |
| 2252 | static int activate_lsp(struct opal_dev *dev, void *data) |
| 2253 | { |
| 2254 | struct opal_lr_act *opal_act = data; |
| 2255 | u8 user_lr[OPAL_UID_LENGTH]; |
| 2256 | int err, i; |
| 2257 | |
| 2258 | err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID], |
| 2259 | opalmethod[OPAL_ACTIVATE]); |
| 2260 | |
| 2261 | if (opal_act->sum) { |
| 2262 | err = build_locking_range(user_lr, sizeof(user_lr), |
| 2263 | opal_act->lr[0]); |
| 2264 | if (err) |
| 2265 | return err; |
| 2266 | |
| 2267 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2268 | add_token_u64(&err, dev, OPAL_SUM_SET_LIST); |
| 2269 | |
| 2270 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 2271 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); |
| 2272 | for (i = 1; i < opal_act->num_lrs; i++) { |
| 2273 | user_lr[7] = opal_act->lr[i]; |
| 2274 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); |
| 2275 | } |
| 2276 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 2277 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2278 | } |
| 2279 | |
| 2280 | if (err) { |
| 2281 | pr_debug("Error building Activate LockingSP command.\n"); |
| 2282 | return err; |
| 2283 | } |
| 2284 | |
| 2285 | return finalize_and_send(dev, parse_and_check_status); |
| 2286 | } |
| 2287 | |
| 2288 | /* Determine if we're in the Manufactured Inactive or Active state */ |
| 2289 | static int get_lsp_lifecycle(struct opal_dev *dev, void *data) |
| 2290 | { |
| 2291 | u8 lc_status; |
| 2292 | int err; |
| 2293 | |
| 2294 | err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID], |
| 2295 | OPAL_LIFECYCLE); |
| 2296 | if (err) |
| 2297 | return err; |
| 2298 | |
| 2299 | lc_status = response_get_u64(&dev->parsed, 4); |
| 2300 | /* 0x08 is Manufactured Inactive */ |
| 2301 | /* 0x09 is Manufactured */ |
| 2302 | if (lc_status != OPAL_MANUFACTURED_INACTIVE) { |
| 2303 | pr_debug("Couldn't determine the status of the Lifecycle state\n"); |
| 2304 | return -ENODEV; |
| 2305 | } |
| 2306 | |
| 2307 | return 0; |
| 2308 | } |
| 2309 | |
| 2310 | static int get_msid_cpin_pin(struct opal_dev *dev, void *data) |
| 2311 | { |
| 2312 | const char *msid_pin; |
| 2313 | size_t strlen; |
| 2314 | int err; |
| 2315 | |
| 2316 | err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN); |
| 2317 | if (err) |
| 2318 | return err; |
| 2319 | |
| 2320 | strlen = response_get_string(&dev->parsed, 4, &msid_pin); |
| 2321 | if (!msid_pin) { |
| 2322 | pr_debug("Couldn't extract MSID_CPIN from response\n"); |
| 2323 | return OPAL_INVAL_PARAM; |
| 2324 | } |
| 2325 | |
| 2326 | dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL); |
| 2327 | if (!dev->prev_data) |
| 2328 | return -ENOMEM; |
| 2329 | |
| 2330 | dev->prev_d_len = strlen; |
| 2331 | |
| 2332 | return 0; |
| 2333 | } |
| 2334 | |
| 2335 | static int write_table_data(struct opal_dev *dev, void *data) |
| 2336 | { |
| 2337 | struct opal_read_write_table *write_tbl = data; |
| 2338 | |
| 2339 | return generic_table_write_data(dev, write_tbl->data, write_tbl->offset, |
| 2340 | write_tbl->size, write_tbl->table_uid); |
| 2341 | } |
| 2342 | |
| 2343 | static int read_table_data_cont(struct opal_dev *dev) |
| 2344 | { |
| 2345 | int err; |
| 2346 | const char *data_read; |
| 2347 | |
| 2348 | err = parse_and_check_status(dev); |
| 2349 | if (err) |
| 2350 | return err; |
| 2351 | |
| 2352 | dev->prev_d_len = response_get_string(&dev->parsed, 1, &data_read); |
| 2353 | dev->prev_data = (void *)data_read; |
| 2354 | if (!dev->prev_data) { |
| 2355 | pr_debug("%s: Couldn't read data from the table.\n", __func__); |
| 2356 | return OPAL_INVAL_PARAM; |
| 2357 | } |
| 2358 | |
| 2359 | return 0; |
| 2360 | } |
| 2361 | |
| 2362 | /* |
| 2363 | * IO_BUFFER_LENGTH = 2048 |
| 2364 | * sizeof(header) = 56 |
| 2365 | * No. of Token Bytes in the Response = 11 |
| 2366 | * MAX size of data that can be carried in response buffer |
| 2367 | * at a time is : 2048 - (56 + 11) = 1981 = 0x7BD. |
| 2368 | */ |
| 2369 | #define OPAL_MAX_READ_TABLE (0x7BD) |
| 2370 | |
| 2371 | static int read_table_data(struct opal_dev *dev, void *data) |
| 2372 | { |
| 2373 | struct opal_read_write_table *read_tbl = data; |
| 2374 | int err; |
| 2375 | size_t off = 0, max_read_size = OPAL_MAX_READ_TABLE; |
| 2376 | u64 table_len, len; |
| 2377 | u64 offset = read_tbl->offset, read_size = read_tbl->size - 1; |
| 2378 | u8 __user *dst; |
| 2379 | |
| 2380 | err = generic_get_table_info(dev, read_tbl->table_uid, OPAL_TABLE_ROWS); |
| 2381 | if (err) { |
| 2382 | pr_debug("Couldn't get the table size\n"); |
| 2383 | return err; |
| 2384 | } |
| 2385 | |
| 2386 | table_len = response_get_u64(&dev->parsed, 4); |
| 2387 | |
| 2388 | /* Check if the user is trying to read from the table limits */ |
| 2389 | if (read_size > table_len || offset > table_len - read_size) { |
| 2390 | pr_debug("Read size exceeds the Table size limits (%llu vs. %llu)\n", |
| 2391 | offset + read_size, table_len); |
| 2392 | return -EINVAL; |
| 2393 | } |
| 2394 | |
| 2395 | while (off < read_size) { |
| 2396 | err = cmd_start(dev, read_tbl->table_uid, opalmethod[OPAL_GET]); |
| 2397 | |
| 2398 | add_token_u8(&err, dev, OPAL_STARTLIST); |
| 2399 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2400 | add_token_u8(&err, dev, OPAL_STARTROW); |
| 2401 | add_token_u64(&err, dev, offset + off); /* start row value */ |
| 2402 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2403 | |
| 2404 | add_token_u8(&err, dev, OPAL_STARTNAME); |
| 2405 | add_token_u8(&err, dev, OPAL_ENDROW); |
| 2406 | |
| 2407 | len = min(max_read_size, (size_t)(read_size - off)); |
| 2408 | add_token_u64(&err, dev, offset + off + len); /* end row value |
| 2409 | */ |
| 2410 | add_token_u8(&err, dev, OPAL_ENDNAME); |
| 2411 | add_token_u8(&err, dev, OPAL_ENDLIST); |
| 2412 | |
| 2413 | if (err) { |
| 2414 | pr_debug("Error building read table data command.\n"); |
| 2415 | break; |
| 2416 | } |
| 2417 | |
| 2418 | err = finalize_and_send(dev, read_table_data_cont); |
| 2419 | if (err) |
| 2420 | break; |
| 2421 | |
| 2422 | /* len+1: This includes the NULL terminator at the end*/ |
| 2423 | if (dev->prev_d_len > len + 1) { |
| 2424 | err = -EOVERFLOW; |
| 2425 | break; |
| 2426 | } |
| 2427 | |
| 2428 | dst = (u8 __user *)(uintptr_t)read_tbl->data; |
| 2429 | if (copy_to_user(dst + off, dev->prev_data, dev->prev_d_len)) { |
| 2430 | pr_debug("Error copying data to userspace\n"); |
| 2431 | err = -EFAULT; |
| 2432 | break; |
| 2433 | } |
| 2434 | dev->prev_data = NULL; |
| 2435 | |
| 2436 | off += len; |
| 2437 | } |
| 2438 | |
| 2439 | return err; |
| 2440 | } |
| 2441 | |
| 2442 | static int end_opal_session(struct opal_dev *dev, void *data) |
| 2443 | { |
| 2444 | int err = 0; |
| 2445 | |
| 2446 | clear_opal_cmd(dev); |
| 2447 | set_comid(dev, dev->comid); |
| 2448 | add_token_u8(&err, dev, OPAL_ENDOFSESSION); |
| 2449 | |
| 2450 | if (err < 0) |
| 2451 | return err; |
| 2452 | |
| 2453 | return finalize_and_send(dev, end_session_cont); |
| 2454 | } |
| 2455 | |
| 2456 | static int end_opal_session_error(struct opal_dev *dev) |
| 2457 | { |
| 2458 | const struct opal_step error_end_session = { |
| 2459 | end_opal_session, |
| 2460 | }; |
| 2461 | |
| 2462 | return execute_step(dev, &error_end_session, 0); |
| 2463 | } |
| 2464 | |
| 2465 | static inline void setup_opal_dev(struct opal_dev *dev) |
| 2466 | { |
| 2467 | dev->tsn = 0; |
| 2468 | dev->hsn = 0; |
| 2469 | dev->prev_data = NULL; |
| 2470 | } |
| 2471 | |
| 2472 | static int check_opal_support(struct opal_dev *dev) |
| 2473 | { |
| 2474 | int ret; |
| 2475 | |
| 2476 | mutex_lock(&dev->dev_lock); |
| 2477 | setup_opal_dev(dev); |
| 2478 | ret = opal_discovery0_step(dev); |
| 2479 | if (!ret) |
| 2480 | dev->flags |= OPAL_FL_SUPPORTED; |
| 2481 | mutex_unlock(&dev->dev_lock); |
| 2482 | |
| 2483 | return ret; |
| 2484 | } |
| 2485 | |
| 2486 | static void clean_opal_dev(struct opal_dev *dev) |
| 2487 | { |
| 2488 | |
| 2489 | struct opal_suspend_data *suspend, *next; |
| 2490 | |
| 2491 | mutex_lock(&dev->dev_lock); |
| 2492 | list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) { |
| 2493 | list_del(&suspend->node); |
| 2494 | kfree(suspend); |
| 2495 | } |
| 2496 | mutex_unlock(&dev->dev_lock); |
| 2497 | } |
| 2498 | |
| 2499 | void free_opal_dev(struct opal_dev *dev) |
| 2500 | { |
| 2501 | if (!dev) |
| 2502 | return; |
| 2503 | |
| 2504 | clean_opal_dev(dev); |
| 2505 | kfree(dev->resp); |
| 2506 | kfree(dev->cmd); |
| 2507 | kfree(dev); |
| 2508 | } |
| 2509 | EXPORT_SYMBOL(free_opal_dev); |
| 2510 | |
| 2511 | struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv) |
| 2512 | { |
| 2513 | struct opal_dev *dev; |
| 2514 | |
| 2515 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); |
| 2516 | if (!dev) |
| 2517 | return NULL; |
| 2518 | |
| 2519 | /* |
| 2520 | * Presumably DMA-able buffers must be cache-aligned. Kmalloc makes |
| 2521 | * sure the allocated buffer is DMA-safe in that regard. |
| 2522 | */ |
| 2523 | dev->cmd = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL); |
| 2524 | if (!dev->cmd) |
| 2525 | goto err_free_dev; |
| 2526 | |
| 2527 | dev->resp = kmalloc(IO_BUFFER_LENGTH, GFP_KERNEL); |
| 2528 | if (!dev->resp) |
| 2529 | goto err_free_cmd; |
| 2530 | |
| 2531 | INIT_LIST_HEAD(&dev->unlk_lst); |
| 2532 | mutex_init(&dev->dev_lock); |
| 2533 | dev->flags = 0; |
| 2534 | dev->data = data; |
| 2535 | dev->send_recv = send_recv; |
| 2536 | if (check_opal_support(dev) != 0) { |
| 2537 | pr_debug("Opal is not supported on this device\n"); |
| 2538 | goto err_free_resp; |
| 2539 | } |
| 2540 | |
| 2541 | return dev; |
| 2542 | |
| 2543 | err_free_resp: |
| 2544 | kfree(dev->resp); |
| 2545 | |
| 2546 | err_free_cmd: |
| 2547 | kfree(dev->cmd); |
| 2548 | |
| 2549 | err_free_dev: |
| 2550 | kfree(dev); |
| 2551 | |
| 2552 | return NULL; |
| 2553 | } |
| 2554 | EXPORT_SYMBOL(init_opal_dev); |
| 2555 | |
| 2556 | static int opal_secure_erase_locking_range(struct opal_dev *dev, |
| 2557 | struct opal_session_info *opal_session) |
| 2558 | { |
| 2559 | const struct opal_step erase_steps[] = { |
| 2560 | { start_auth_opal_session, opal_session }, |
| 2561 | { get_active_key, &opal_session->opal_key.lr }, |
| 2562 | { gen_key, }, |
| 2563 | { end_opal_session, } |
| 2564 | }; |
| 2565 | int ret; |
| 2566 | |
| 2567 | ret = opal_get_key(dev, &opal_session->opal_key); |
| 2568 | if (ret) |
| 2569 | return ret; |
| 2570 | mutex_lock(&dev->dev_lock); |
| 2571 | setup_opal_dev(dev); |
| 2572 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
| 2573 | mutex_unlock(&dev->dev_lock); |
| 2574 | |
| 2575 | return ret; |
| 2576 | } |
| 2577 | |
| 2578 | static int opal_get_discv(struct opal_dev *dev, struct opal_discovery *discv) |
| 2579 | { |
| 2580 | const struct opal_step discovery0_step = { |
| 2581 | opal_discovery0, discv |
| 2582 | }; |
| 2583 | int ret; |
| 2584 | |
| 2585 | mutex_lock(&dev->dev_lock); |
| 2586 | setup_opal_dev(dev); |
| 2587 | ret = execute_step(dev, &discovery0_step, 0); |
| 2588 | mutex_unlock(&dev->dev_lock); |
| 2589 | if (ret) |
| 2590 | return ret; |
| 2591 | return discv->size; /* modified to actual length of data */ |
| 2592 | } |
| 2593 | |
| 2594 | static int opal_revertlsp(struct opal_dev *dev, struct opal_revert_lsp *rev) |
| 2595 | { |
| 2596 | /* controller will terminate session */ |
| 2597 | const struct opal_step steps[] = { |
| 2598 | { start_admin1LSP_opal_session, &rev->key }, |
| 2599 | { revert_lsp, rev } |
| 2600 | }; |
| 2601 | int ret; |
| 2602 | |
| 2603 | ret = opal_get_key(dev, &rev->key); |
| 2604 | if (ret) |
| 2605 | return ret; |
| 2606 | mutex_lock(&dev->dev_lock); |
| 2607 | setup_opal_dev(dev); |
| 2608 | ret = execute_steps(dev, steps, ARRAY_SIZE(steps)); |
| 2609 | mutex_unlock(&dev->dev_lock); |
| 2610 | |
| 2611 | return ret; |
| 2612 | } |
| 2613 | |
| 2614 | static int opal_erase_locking_range(struct opal_dev *dev, |
| 2615 | struct opal_session_info *opal_session) |
| 2616 | { |
| 2617 | const struct opal_step erase_steps[] = { |
| 2618 | { start_auth_opal_session, opal_session }, |
| 2619 | { erase_locking_range, opal_session }, |
| 2620 | { end_opal_session, } |
| 2621 | }; |
| 2622 | int ret; |
| 2623 | |
| 2624 | ret = opal_get_key(dev, &opal_session->opal_key); |
| 2625 | if (ret) |
| 2626 | return ret; |
| 2627 | mutex_lock(&dev->dev_lock); |
| 2628 | setup_opal_dev(dev); |
| 2629 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
| 2630 | mutex_unlock(&dev->dev_lock); |
| 2631 | |
| 2632 | return ret; |
| 2633 | } |
| 2634 | |
| 2635 | static int opal_enable_disable_shadow_mbr(struct opal_dev *dev, |
| 2636 | struct opal_mbr_data *opal_mbr) |
| 2637 | { |
| 2638 | u8 enable_disable = opal_mbr->enable_disable == OPAL_MBR_ENABLE ? |
| 2639 | OPAL_TRUE : OPAL_FALSE; |
| 2640 | |
| 2641 | const struct opal_step mbr_steps[] = { |
| 2642 | { start_admin1LSP_opal_session, &opal_mbr->key }, |
| 2643 | { set_mbr_done, &enable_disable }, |
| 2644 | { end_opal_session, }, |
| 2645 | { start_admin1LSP_opal_session, &opal_mbr->key }, |
| 2646 | { set_mbr_enable_disable, &enable_disable }, |
| 2647 | { end_opal_session, } |
| 2648 | }; |
| 2649 | int ret; |
| 2650 | |
| 2651 | if (opal_mbr->enable_disable != OPAL_MBR_ENABLE && |
| 2652 | opal_mbr->enable_disable != OPAL_MBR_DISABLE) |
| 2653 | return -EINVAL; |
| 2654 | |
| 2655 | ret = opal_get_key(dev, &opal_mbr->key); |
| 2656 | if (ret) |
| 2657 | return ret; |
| 2658 | mutex_lock(&dev->dev_lock); |
| 2659 | setup_opal_dev(dev); |
| 2660 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); |
| 2661 | mutex_unlock(&dev->dev_lock); |
| 2662 | |
| 2663 | return ret; |
| 2664 | } |
| 2665 | |
| 2666 | static int opal_set_mbr_done(struct opal_dev *dev, |
| 2667 | struct opal_mbr_done *mbr_done) |
| 2668 | { |
| 2669 | u8 mbr_done_tf = mbr_done->done_flag == OPAL_MBR_DONE ? |
| 2670 | OPAL_TRUE : OPAL_FALSE; |
| 2671 | |
| 2672 | const struct opal_step mbr_steps[] = { |
| 2673 | { start_admin1LSP_opal_session, &mbr_done->key }, |
| 2674 | { set_mbr_done, &mbr_done_tf }, |
| 2675 | { end_opal_session, } |
| 2676 | }; |
| 2677 | int ret; |
| 2678 | |
| 2679 | if (mbr_done->done_flag != OPAL_MBR_DONE && |
| 2680 | mbr_done->done_flag != OPAL_MBR_NOT_DONE) |
| 2681 | return -EINVAL; |
| 2682 | |
| 2683 | ret = opal_get_key(dev, &mbr_done->key); |
| 2684 | if (ret) |
| 2685 | return ret; |
| 2686 | mutex_lock(&dev->dev_lock); |
| 2687 | setup_opal_dev(dev); |
| 2688 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); |
| 2689 | mutex_unlock(&dev->dev_lock); |
| 2690 | |
| 2691 | return ret; |
| 2692 | } |
| 2693 | |
| 2694 | static int opal_write_shadow_mbr(struct opal_dev *dev, |
| 2695 | struct opal_shadow_mbr *info) |
| 2696 | { |
| 2697 | const struct opal_step mbr_steps[] = { |
| 2698 | { start_admin1LSP_opal_session, &info->key }, |
| 2699 | { write_shadow_mbr, info }, |
| 2700 | { end_opal_session, } |
| 2701 | }; |
| 2702 | int ret; |
| 2703 | |
| 2704 | if (info->size == 0) |
| 2705 | return 0; |
| 2706 | |
| 2707 | ret = opal_get_key(dev, &info->key); |
| 2708 | if (ret) |
| 2709 | return ret; |
| 2710 | mutex_lock(&dev->dev_lock); |
| 2711 | setup_opal_dev(dev); |
| 2712 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); |
| 2713 | mutex_unlock(&dev->dev_lock); |
| 2714 | |
| 2715 | return ret; |
| 2716 | } |
| 2717 | |
| 2718 | static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) |
| 2719 | { |
| 2720 | struct opal_suspend_data *suspend; |
| 2721 | |
| 2722 | suspend = kzalloc(sizeof(*suspend), GFP_KERNEL); |
| 2723 | if (!suspend) |
| 2724 | return -ENOMEM; |
| 2725 | |
| 2726 | suspend->unlk = *lk_unlk; |
| 2727 | suspend->lr = lk_unlk->session.opal_key.lr; |
| 2728 | |
| 2729 | mutex_lock(&dev->dev_lock); |
| 2730 | setup_opal_dev(dev); |
| 2731 | add_suspend_info(dev, suspend); |
| 2732 | mutex_unlock(&dev->dev_lock); |
| 2733 | |
| 2734 | return 0; |
| 2735 | } |
| 2736 | |
| 2737 | static int opal_add_user_to_lr(struct opal_dev *dev, |
| 2738 | struct opal_lock_unlock *lk_unlk) |
| 2739 | { |
| 2740 | const struct opal_step steps[] = { |
| 2741 | { start_admin1LSP_opal_session, &lk_unlk->session.opal_key }, |
| 2742 | { add_user_to_lr, lk_unlk }, |
| 2743 | { add_user_to_lr_ace, lk_unlk }, |
| 2744 | { end_opal_session, } |
| 2745 | }; |
| 2746 | int ret; |
| 2747 | |
| 2748 | if (lk_unlk->l_state != OPAL_RO && |
| 2749 | lk_unlk->l_state != OPAL_RW) { |
| 2750 | pr_debug("Locking state was not RO or RW\n"); |
| 2751 | return -EINVAL; |
| 2752 | } |
| 2753 | |
| 2754 | if (lk_unlk->session.who < OPAL_USER1 || |
| 2755 | lk_unlk->session.who > OPAL_USER9) { |
| 2756 | pr_debug("Authority was not within the range of users: %d\n", |
| 2757 | lk_unlk->session.who); |
| 2758 | return -EINVAL; |
| 2759 | } |
| 2760 | |
| 2761 | if (lk_unlk->session.sum) { |
| 2762 | pr_debug("%s not supported in sum. Use setup locking range\n", |
| 2763 | __func__); |
| 2764 | return -EINVAL; |
| 2765 | } |
| 2766 | |
| 2767 | ret = opal_get_key(dev, &lk_unlk->session.opal_key); |
| 2768 | if (ret) |
| 2769 | return ret; |
| 2770 | mutex_lock(&dev->dev_lock); |
| 2771 | setup_opal_dev(dev); |
| 2772 | ret = execute_steps(dev, steps, ARRAY_SIZE(steps)); |
| 2773 | mutex_unlock(&dev->dev_lock); |
| 2774 | |
| 2775 | return ret; |
| 2776 | } |
| 2777 | |
| 2778 | static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psid) |
| 2779 | { |
| 2780 | /* controller will terminate session */ |
| 2781 | const struct opal_step revert_steps[] = { |
| 2782 | { start_SIDASP_opal_session, opal }, |
| 2783 | { revert_tper, } |
| 2784 | }; |
| 2785 | const struct opal_step psid_revert_steps[] = { |
| 2786 | { start_PSID_opal_session, opal }, |
| 2787 | { revert_tper, } |
| 2788 | }; |
| 2789 | |
| 2790 | int ret; |
| 2791 | |
| 2792 | ret = opal_get_key(dev, opal); |
| 2793 | |
| 2794 | if (ret) |
| 2795 | return ret; |
| 2796 | mutex_lock(&dev->dev_lock); |
| 2797 | setup_opal_dev(dev); |
| 2798 | if (psid) |
| 2799 | ret = execute_steps(dev, psid_revert_steps, |
| 2800 | ARRAY_SIZE(psid_revert_steps)); |
| 2801 | else |
| 2802 | ret = execute_steps(dev, revert_steps, |
| 2803 | ARRAY_SIZE(revert_steps)); |
| 2804 | mutex_unlock(&dev->dev_lock); |
| 2805 | |
| 2806 | /* |
| 2807 | * If we successfully reverted lets clean |
| 2808 | * any saved locking ranges. |
| 2809 | */ |
| 2810 | if (!ret) |
| 2811 | clean_opal_dev(dev); |
| 2812 | |
| 2813 | return ret; |
| 2814 | } |
| 2815 | |
| 2816 | static int __opal_lock_unlock(struct opal_dev *dev, |
| 2817 | struct opal_lock_unlock *lk_unlk) |
| 2818 | { |
| 2819 | const struct opal_step unlock_steps[] = { |
| 2820 | { start_auth_opal_session, &lk_unlk->session }, |
| 2821 | { lock_unlock_locking_range, lk_unlk }, |
| 2822 | { end_opal_session, } |
| 2823 | }; |
| 2824 | const struct opal_step unlock_sum_steps[] = { |
| 2825 | { start_auth_opal_session, &lk_unlk->session }, |
| 2826 | { lock_unlock_locking_range_sum, lk_unlk }, |
| 2827 | { end_opal_session, } |
| 2828 | }; |
| 2829 | |
| 2830 | if (lk_unlk->session.sum) |
| 2831 | return execute_steps(dev, unlock_sum_steps, |
| 2832 | ARRAY_SIZE(unlock_sum_steps)); |
| 2833 | else |
| 2834 | return execute_steps(dev, unlock_steps, |
| 2835 | ARRAY_SIZE(unlock_steps)); |
| 2836 | } |
| 2837 | |
| 2838 | static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key) |
| 2839 | { |
| 2840 | u8 mbr_done_tf = OPAL_TRUE; |
| 2841 | const struct opal_step mbrdone_step[] = { |
| 2842 | { start_admin1LSP_opal_session, key }, |
| 2843 | { set_mbr_done, &mbr_done_tf }, |
| 2844 | { end_opal_session, } |
| 2845 | }; |
| 2846 | |
| 2847 | return execute_steps(dev, mbrdone_step, ARRAY_SIZE(mbrdone_step)); |
| 2848 | } |
| 2849 | |
| 2850 | static void opal_lock_check_for_saved_key(struct opal_dev *dev, |
| 2851 | struct opal_lock_unlock *lk_unlk) |
| 2852 | { |
| 2853 | struct opal_suspend_data *iter; |
| 2854 | |
| 2855 | if (lk_unlk->l_state != OPAL_LK || |
| 2856 | lk_unlk->session.opal_key.key_len > 0) |
| 2857 | return; |
| 2858 | |
| 2859 | /* |
| 2860 | * Usually when closing a crypto device (eg: dm-crypt with LUKS) the |
| 2861 | * volume key is not required, as it requires root privileges anyway, |
| 2862 | * and root can deny access to a disk in many ways regardless. |
| 2863 | * Requiring the volume key to lock the device is a peculiarity of the |
| 2864 | * OPAL specification. Given we might already have saved the key if |
| 2865 | * the user requested it via the 'IOC_OPAL_SAVE' ioctl, we can use |
| 2866 | * that key to lock the device if no key was provided here, the |
| 2867 | * locking range matches and the appropriate flag was passed with |
| 2868 | * 'IOC_OPAL_SAVE'. |
| 2869 | * This allows integrating OPAL with tools and libraries that are used |
| 2870 | * to the common behaviour and do not ask for the volume key when |
| 2871 | * closing a device. |
| 2872 | */ |
| 2873 | setup_opal_dev(dev); |
| 2874 | list_for_each_entry(iter, &dev->unlk_lst, node) { |
| 2875 | if ((iter->unlk.flags & OPAL_SAVE_FOR_LOCK) && |
| 2876 | iter->lr == lk_unlk->session.opal_key.lr && |
| 2877 | iter->unlk.session.opal_key.key_len > 0) { |
| 2878 | lk_unlk->session.opal_key.key_len = |
| 2879 | iter->unlk.session.opal_key.key_len; |
| 2880 | memcpy(lk_unlk->session.opal_key.key, |
| 2881 | iter->unlk.session.opal_key.key, |
| 2882 | iter->unlk.session.opal_key.key_len); |
| 2883 | break; |
| 2884 | } |
| 2885 | } |
| 2886 | } |
| 2887 | |
| 2888 | static int opal_lock_unlock(struct opal_dev *dev, |
| 2889 | struct opal_lock_unlock *lk_unlk) |
| 2890 | { |
| 2891 | int ret; |
| 2892 | |
| 2893 | if (lk_unlk->session.who > OPAL_USER9) |
| 2894 | return -EINVAL; |
| 2895 | |
| 2896 | mutex_lock(&dev->dev_lock); |
| 2897 | opal_lock_check_for_saved_key(dev, lk_unlk); |
| 2898 | ret = opal_get_key(dev, &lk_unlk->session.opal_key); |
| 2899 | if (!ret) |
| 2900 | ret = __opal_lock_unlock(dev, lk_unlk); |
| 2901 | mutex_unlock(&dev->dev_lock); |
| 2902 | |
| 2903 | return ret; |
| 2904 | } |
| 2905 | |
| 2906 | static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal) |
| 2907 | { |
| 2908 | const struct opal_step owner_steps[] = { |
| 2909 | { start_anybodyASP_opal_session, }, |
| 2910 | { get_msid_cpin_pin, }, |
| 2911 | { end_opal_session, }, |
| 2912 | { start_SIDASP_opal_session, opal }, |
| 2913 | { set_sid_cpin_pin, opal }, |
| 2914 | { end_opal_session, } |
| 2915 | }; |
| 2916 | int ret; |
| 2917 | |
| 2918 | if (!dev) |
| 2919 | return -ENODEV; |
| 2920 | |
| 2921 | ret = opal_get_key(dev, opal); |
| 2922 | if (ret) |
| 2923 | return ret; |
| 2924 | mutex_lock(&dev->dev_lock); |
| 2925 | setup_opal_dev(dev); |
| 2926 | ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps)); |
| 2927 | mutex_unlock(&dev->dev_lock); |
| 2928 | |
| 2929 | return ret; |
| 2930 | } |
| 2931 | |
| 2932 | static int opal_activate_lsp(struct opal_dev *dev, |
| 2933 | struct opal_lr_act *opal_lr_act) |
| 2934 | { |
| 2935 | const struct opal_step active_steps[] = { |
| 2936 | { start_SIDASP_opal_session, &opal_lr_act->key }, |
| 2937 | { get_lsp_lifecycle, }, |
| 2938 | { activate_lsp, opal_lr_act }, |
| 2939 | { end_opal_session, } |
| 2940 | }; |
| 2941 | int ret; |
| 2942 | |
| 2943 | if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS) |
| 2944 | return -EINVAL; |
| 2945 | |
| 2946 | ret = opal_get_key(dev, &opal_lr_act->key); |
| 2947 | if (ret) |
| 2948 | return ret; |
| 2949 | mutex_lock(&dev->dev_lock); |
| 2950 | setup_opal_dev(dev); |
| 2951 | ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps)); |
| 2952 | mutex_unlock(&dev->dev_lock); |
| 2953 | |
| 2954 | return ret; |
| 2955 | } |
| 2956 | |
| 2957 | static int opal_setup_locking_range(struct opal_dev *dev, |
| 2958 | struct opal_user_lr_setup *opal_lrs) |
| 2959 | { |
| 2960 | const struct opal_step lr_steps[] = { |
| 2961 | { start_auth_opal_session, &opal_lrs->session }, |
| 2962 | { setup_locking_range, opal_lrs }, |
| 2963 | { end_opal_session, } |
| 2964 | }; |
| 2965 | int ret; |
| 2966 | |
| 2967 | ret = opal_get_key(dev, &opal_lrs->session.opal_key); |
| 2968 | if (ret) |
| 2969 | return ret; |
| 2970 | mutex_lock(&dev->dev_lock); |
| 2971 | setup_opal_dev(dev); |
| 2972 | ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps)); |
| 2973 | mutex_unlock(&dev->dev_lock); |
| 2974 | |
| 2975 | return ret; |
| 2976 | } |
| 2977 | |
| 2978 | static int opal_locking_range_status(struct opal_dev *dev, |
| 2979 | struct opal_lr_status *opal_lrst, |
| 2980 | void __user *data) |
| 2981 | { |
| 2982 | const struct opal_step lr_steps[] = { |
| 2983 | { start_auth_opal_session, &opal_lrst->session }, |
| 2984 | { locking_range_status, opal_lrst }, |
| 2985 | { end_opal_session, } |
| 2986 | }; |
| 2987 | int ret; |
| 2988 | |
| 2989 | mutex_lock(&dev->dev_lock); |
| 2990 | setup_opal_dev(dev); |
| 2991 | ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps)); |
| 2992 | mutex_unlock(&dev->dev_lock); |
| 2993 | |
| 2994 | /* skip session info when copying back to uspace */ |
| 2995 | if (!ret && copy_to_user(data + offsetof(struct opal_lr_status, range_start), |
| 2996 | (void *)opal_lrst + offsetof(struct opal_lr_status, range_start), |
| 2997 | sizeof(*opal_lrst) - offsetof(struct opal_lr_status, range_start))) { |
| 2998 | pr_debug("Error copying status to userspace\n"); |
| 2999 | return -EFAULT; |
| 3000 | } |
| 3001 | |
| 3002 | return ret; |
| 3003 | } |
| 3004 | |
| 3005 | static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw) |
| 3006 | { |
| 3007 | const struct opal_step pw_steps[] = { |
| 3008 | { start_auth_opal_session, &opal_pw->session }, |
| 3009 | { set_new_pw, &opal_pw->new_user_pw }, |
| 3010 | { end_opal_session, } |
| 3011 | }; |
| 3012 | int ret; |
| 3013 | |
| 3014 | if (opal_pw->session.who > OPAL_USER9 || |
| 3015 | opal_pw->new_user_pw.who > OPAL_USER9) |
| 3016 | return -EINVAL; |
| 3017 | |
| 3018 | mutex_lock(&dev->dev_lock); |
| 3019 | setup_opal_dev(dev); |
| 3020 | ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps)); |
| 3021 | mutex_unlock(&dev->dev_lock); |
| 3022 | |
| 3023 | if (ret) |
| 3024 | return ret; |
| 3025 | |
| 3026 | /* update keyring and key store with new password */ |
| 3027 | ret = sed_write_key(OPAL_AUTH_KEY, |
| 3028 | opal_pw->new_user_pw.opal_key.key, |
| 3029 | opal_pw->new_user_pw.opal_key.key_len); |
| 3030 | if (ret != -EOPNOTSUPP) |
| 3031 | pr_warn("error updating SED key: %d\n", ret); |
| 3032 | |
| 3033 | ret = update_sed_opal_key(OPAL_AUTH_KEY, |
| 3034 | opal_pw->new_user_pw.opal_key.key, |
| 3035 | opal_pw->new_user_pw.opal_key.key_len); |
| 3036 | |
| 3037 | return ret; |
| 3038 | } |
| 3039 | |
| 3040 | static int opal_activate_user(struct opal_dev *dev, |
| 3041 | struct opal_session_info *opal_session) |
| 3042 | { |
| 3043 | const struct opal_step act_steps[] = { |
| 3044 | { start_admin1LSP_opal_session, &opal_session->opal_key }, |
| 3045 | { internal_activate_user, opal_session }, |
| 3046 | { end_opal_session, } |
| 3047 | }; |
| 3048 | int ret; |
| 3049 | |
| 3050 | /* We can't activate Admin1 it's active as manufactured */ |
| 3051 | if (opal_session->who < OPAL_USER1 || |
| 3052 | opal_session->who > OPAL_USER9) { |
| 3053 | pr_debug("Who was not a valid user: %d\n", opal_session->who); |
| 3054 | return -EINVAL; |
| 3055 | } |
| 3056 | |
| 3057 | ret = opal_get_key(dev, &opal_session->opal_key); |
| 3058 | if (ret) |
| 3059 | return ret; |
| 3060 | mutex_lock(&dev->dev_lock); |
| 3061 | setup_opal_dev(dev); |
| 3062 | ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps)); |
| 3063 | mutex_unlock(&dev->dev_lock); |
| 3064 | |
| 3065 | return ret; |
| 3066 | } |
| 3067 | |
| 3068 | bool opal_unlock_from_suspend(struct opal_dev *dev) |
| 3069 | { |
| 3070 | struct opal_suspend_data *suspend; |
| 3071 | bool was_failure = false; |
| 3072 | int ret; |
| 3073 | |
| 3074 | if (!dev) |
| 3075 | return false; |
| 3076 | |
| 3077 | if (!(dev->flags & OPAL_FL_SUPPORTED)) |
| 3078 | return false; |
| 3079 | |
| 3080 | mutex_lock(&dev->dev_lock); |
| 3081 | setup_opal_dev(dev); |
| 3082 | |
| 3083 | list_for_each_entry(suspend, &dev->unlk_lst, node) { |
| 3084 | dev->tsn = 0; |
| 3085 | dev->hsn = 0; |
| 3086 | |
| 3087 | ret = __opal_lock_unlock(dev, &suspend->unlk); |
| 3088 | if (ret) { |
| 3089 | pr_debug("Failed to unlock LR %hhu with sum %d\n", |
| 3090 | suspend->unlk.session.opal_key.lr, |
| 3091 | suspend->unlk.session.sum); |
| 3092 | was_failure = true; |
| 3093 | } |
| 3094 | |
| 3095 | if (dev->flags & OPAL_FL_MBR_ENABLED) { |
| 3096 | ret = __opal_set_mbr_done(dev, &suspend->unlk.session.opal_key); |
| 3097 | if (ret) |
| 3098 | pr_debug("Failed to set MBR Done in S3 resume\n"); |
| 3099 | } |
| 3100 | } |
| 3101 | mutex_unlock(&dev->dev_lock); |
| 3102 | |
| 3103 | return was_failure; |
| 3104 | } |
| 3105 | EXPORT_SYMBOL(opal_unlock_from_suspend); |
| 3106 | |
| 3107 | static int opal_read_table(struct opal_dev *dev, |
| 3108 | struct opal_read_write_table *rw_tbl) |
| 3109 | { |
| 3110 | const struct opal_step read_table_steps[] = { |
| 3111 | { start_admin1LSP_opal_session, &rw_tbl->key }, |
| 3112 | { read_table_data, rw_tbl }, |
| 3113 | { end_opal_session, } |
| 3114 | }; |
| 3115 | |
| 3116 | if (!rw_tbl->size) |
| 3117 | return 0; |
| 3118 | |
| 3119 | return execute_steps(dev, read_table_steps, |
| 3120 | ARRAY_SIZE(read_table_steps)); |
| 3121 | } |
| 3122 | |
| 3123 | static int opal_write_table(struct opal_dev *dev, |
| 3124 | struct opal_read_write_table *rw_tbl) |
| 3125 | { |
| 3126 | const struct opal_step write_table_steps[] = { |
| 3127 | { start_admin1LSP_opal_session, &rw_tbl->key }, |
| 3128 | { write_table_data, rw_tbl }, |
| 3129 | { end_opal_session, } |
| 3130 | }; |
| 3131 | |
| 3132 | if (!rw_tbl->size) |
| 3133 | return 0; |
| 3134 | |
| 3135 | return execute_steps(dev, write_table_steps, |
| 3136 | ARRAY_SIZE(write_table_steps)); |
| 3137 | } |
| 3138 | |
| 3139 | static int opal_generic_read_write_table(struct opal_dev *dev, |
| 3140 | struct opal_read_write_table *rw_tbl) |
| 3141 | { |
| 3142 | int ret, bit_set; |
| 3143 | |
| 3144 | ret = opal_get_key(dev, &rw_tbl->key); |
| 3145 | if (ret) |
| 3146 | return ret; |
| 3147 | mutex_lock(&dev->dev_lock); |
| 3148 | setup_opal_dev(dev); |
| 3149 | |
| 3150 | bit_set = fls64(rw_tbl->flags) - 1; |
| 3151 | switch (bit_set) { |
| 3152 | case OPAL_READ_TABLE: |
| 3153 | ret = opal_read_table(dev, rw_tbl); |
| 3154 | break; |
| 3155 | case OPAL_WRITE_TABLE: |
| 3156 | ret = opal_write_table(dev, rw_tbl); |
| 3157 | break; |
| 3158 | default: |
| 3159 | pr_debug("Invalid bit set in the flag (%016llx).\n", |
| 3160 | rw_tbl->flags); |
| 3161 | ret = -EINVAL; |
| 3162 | break; |
| 3163 | } |
| 3164 | |
| 3165 | mutex_unlock(&dev->dev_lock); |
| 3166 | |
| 3167 | return ret; |
| 3168 | } |
| 3169 | |
| 3170 | static int opal_get_status(struct opal_dev *dev, void __user *data) |
| 3171 | { |
| 3172 | struct opal_status sts = {0}; |
| 3173 | |
| 3174 | /* |
| 3175 | * check_opal_support() error is not fatal, |
| 3176 | * !dev->supported is a valid condition |
| 3177 | */ |
| 3178 | if (!check_opal_support(dev)) |
| 3179 | sts.flags = dev->flags; |
| 3180 | if (copy_to_user(data, &sts, sizeof(sts))) { |
| 3181 | pr_debug("Error copying status to userspace\n"); |
| 3182 | return -EFAULT; |
| 3183 | } |
| 3184 | return 0; |
| 3185 | } |
| 3186 | |
| 3187 | static int opal_get_geometry(struct opal_dev *dev, void __user *data) |
| 3188 | { |
| 3189 | struct opal_geometry geo = {0}; |
| 3190 | |
| 3191 | if (check_opal_support(dev)) |
| 3192 | return -EINVAL; |
| 3193 | |
| 3194 | geo.align = dev->align_required; |
| 3195 | geo.logical_block_size = dev->logical_block_size; |
| 3196 | geo.alignment_granularity = dev->align; |
| 3197 | geo.lowest_aligned_lba = dev->lowest_lba; |
| 3198 | |
| 3199 | if (copy_to_user(data, &geo, sizeof(geo))) { |
| 3200 | pr_debug("Error copying geometry data to userspace\n"); |
| 3201 | return -EFAULT; |
| 3202 | } |
| 3203 | |
| 3204 | return 0; |
| 3205 | } |
| 3206 | |
| 3207 | int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) |
| 3208 | { |
| 3209 | void *p; |
| 3210 | int ret = -ENOTTY; |
| 3211 | |
| 3212 | if (!capable(CAP_SYS_ADMIN)) |
| 3213 | return -EACCES; |
| 3214 | if (!dev) |
| 3215 | return -EOPNOTSUPP; |
| 3216 | if (!(dev->flags & OPAL_FL_SUPPORTED)) |
| 3217 | return -EOPNOTSUPP; |
| 3218 | |
| 3219 | if (cmd & IOC_IN) { |
| 3220 | p = memdup_user(arg, _IOC_SIZE(cmd)); |
| 3221 | if (IS_ERR(p)) |
| 3222 | return PTR_ERR(p); |
| 3223 | } |
| 3224 | |
| 3225 | switch (cmd) { |
| 3226 | case IOC_OPAL_SAVE: |
| 3227 | ret = opal_save(dev, p); |
| 3228 | break; |
| 3229 | case IOC_OPAL_LOCK_UNLOCK: |
| 3230 | ret = opal_lock_unlock(dev, p); |
| 3231 | break; |
| 3232 | case IOC_OPAL_TAKE_OWNERSHIP: |
| 3233 | ret = opal_take_ownership(dev, p); |
| 3234 | break; |
| 3235 | case IOC_OPAL_ACTIVATE_LSP: |
| 3236 | ret = opal_activate_lsp(dev, p); |
| 3237 | break; |
| 3238 | case IOC_OPAL_SET_PW: |
| 3239 | ret = opal_set_new_pw(dev, p); |
| 3240 | break; |
| 3241 | case IOC_OPAL_ACTIVATE_USR: |
| 3242 | ret = opal_activate_user(dev, p); |
| 3243 | break; |
| 3244 | case IOC_OPAL_REVERT_TPR: |
| 3245 | ret = opal_reverttper(dev, p, false); |
| 3246 | break; |
| 3247 | case IOC_OPAL_LR_SETUP: |
| 3248 | ret = opal_setup_locking_range(dev, p); |
| 3249 | break; |
| 3250 | case IOC_OPAL_ADD_USR_TO_LR: |
| 3251 | ret = opal_add_user_to_lr(dev, p); |
| 3252 | break; |
| 3253 | case IOC_OPAL_ENABLE_DISABLE_MBR: |
| 3254 | ret = opal_enable_disable_shadow_mbr(dev, p); |
| 3255 | break; |
| 3256 | case IOC_OPAL_MBR_DONE: |
| 3257 | ret = opal_set_mbr_done(dev, p); |
| 3258 | break; |
| 3259 | case IOC_OPAL_WRITE_SHADOW_MBR: |
| 3260 | ret = opal_write_shadow_mbr(dev, p); |
| 3261 | break; |
| 3262 | case IOC_OPAL_ERASE_LR: |
| 3263 | ret = opal_erase_locking_range(dev, p); |
| 3264 | break; |
| 3265 | case IOC_OPAL_SECURE_ERASE_LR: |
| 3266 | ret = opal_secure_erase_locking_range(dev, p); |
| 3267 | break; |
| 3268 | case IOC_OPAL_PSID_REVERT_TPR: |
| 3269 | ret = opal_reverttper(dev, p, true); |
| 3270 | break; |
| 3271 | case IOC_OPAL_GENERIC_TABLE_RW: |
| 3272 | ret = opal_generic_read_write_table(dev, p); |
| 3273 | break; |
| 3274 | case IOC_OPAL_GET_STATUS: |
| 3275 | ret = opal_get_status(dev, arg); |
| 3276 | break; |
| 3277 | case IOC_OPAL_GET_LR_STATUS: |
| 3278 | ret = opal_locking_range_status(dev, p, arg); |
| 3279 | break; |
| 3280 | case IOC_OPAL_GET_GEOMETRY: |
| 3281 | ret = opal_get_geometry(dev, arg); |
| 3282 | break; |
| 3283 | case IOC_OPAL_REVERT_LSP: |
| 3284 | ret = opal_revertlsp(dev, p); |
| 3285 | break; |
| 3286 | case IOC_OPAL_DISCOVERY: |
| 3287 | ret = opal_get_discv(dev, p); |
| 3288 | break; |
| 3289 | |
| 3290 | default: |
| 3291 | break; |
| 3292 | } |
| 3293 | |
| 3294 | if (cmd & IOC_IN) |
| 3295 | kfree(p); |
| 3296 | return ret; |
| 3297 | } |
| 3298 | EXPORT_SYMBOL_GPL(sed_ioctl); |
| 3299 | |
| 3300 | static int __init sed_opal_init(void) |
| 3301 | { |
| 3302 | struct key *kr; |
| 3303 | char init_sed_key[OPAL_KEY_MAX]; |
| 3304 | int keylen = OPAL_KEY_MAX - 1; |
| 3305 | |
| 3306 | kr = keyring_alloc(".sed_opal", |
| 3307 | GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, current_cred(), |
| 3308 | (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | |
| 3309 | KEY_USR_READ | KEY_USR_SEARCH | KEY_USR_WRITE, |
| 3310 | KEY_ALLOC_NOT_IN_QUOTA, |
| 3311 | NULL, NULL); |
| 3312 | if (IS_ERR(kr)) |
| 3313 | return PTR_ERR(kr); |
| 3314 | |
| 3315 | sed_opal_keyring = kr; |
| 3316 | |
| 3317 | if (sed_read_key(OPAL_AUTH_KEY, init_sed_key, &keylen) < 0) { |
| 3318 | memset(init_sed_key, '\0', sizeof(init_sed_key)); |
| 3319 | keylen = OPAL_KEY_MAX - 1; |
| 3320 | } |
| 3321 | |
| 3322 | return update_sed_opal_key(OPAL_AUTH_KEY, init_sed_key, keylen); |
| 3323 | } |
| 3324 | late_initcall(sed_opal_init); |