Commit | Line | Data |
---|---|---|
455a7b23 SB |
1 | /* |
2 | * Copyright © 2016 Intel Corporation | |
3 | * | |
4 | * Authors: | |
5 | * Scott Bauer <scott.bauer@intel.com> | |
6 | * Rafael Antognolli <rafael.antognolli@intel.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | */ | |
17 | ||
18 | #define pr_fmt(fmt) KBUILD_MODNAME ":OPAL: " fmt | |
19 | ||
20 | #include <linux/delay.h> | |
21 | #include <linux/device.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/list.h> | |
24 | #include <linux/genhd.h> | |
25 | #include <linux/slab.h> | |
26 | #include <linux/uaccess.h> | |
27 | #include <uapi/linux/sed-opal.h> | |
28 | #include <linux/sed-opal.h> | |
29 | #include <linux/string.h> | |
30 | #include <linux/kdev_t.h> | |
31 | ||
32 | #include "opal_proto.h" | |
33 | ||
4f1244c8 CH |
34 | #define IO_BUFFER_LENGTH 2048 |
35 | #define MAX_TOKS 64 | |
36 | ||
37 | typedef int (*opal_step)(struct opal_dev *dev); | |
38 | ||
39 | enum opal_atom_width { | |
40 | OPAL_WIDTH_TINY, | |
41 | OPAL_WIDTH_SHORT, | |
42 | OPAL_WIDTH_MEDIUM, | |
43 | OPAL_WIDTH_LONG, | |
44 | OPAL_WIDTH_TOKEN | |
45 | }; | |
46 | ||
47 | /* | |
48 | * On the parsed response, we don't store again the toks that are already | |
49 | * stored in the response buffer. Instead, for each token, we just store a | |
50 | * pointer to the position in the buffer where the token starts, and the size | |
51 | * of the token in bytes. | |
52 | */ | |
53 | struct opal_resp_tok { | |
54 | const u8 *pos; | |
55 | size_t len; | |
56 | enum opal_response_token type; | |
57 | enum opal_atom_width width; | |
58 | union { | |
59 | u64 u; | |
60 | s64 s; | |
61 | } stored; | |
62 | }; | |
63 | ||
64 | /* | |
65 | * From the response header it's not possible to know how many tokens there are | |
66 | * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later | |
67 | * if we start dealing with messages that have more than that, we can increase | |
68 | * this number. This is done to avoid having to make two passes through the | |
69 | * response, the first one counting how many tokens we have and the second one | |
70 | * actually storing the positions. | |
71 | */ | |
72 | struct parsed_resp { | |
73 | int num; | |
74 | struct opal_resp_tok toks[MAX_TOKS]; | |
75 | }; | |
76 | ||
77 | struct opal_dev { | |
78 | bool supported; | |
79 | ||
80 | void *data; | |
81 | sec_send_recv *send_recv; | |
82 | ||
83 | const opal_step *funcs; | |
84 | void **func_data; | |
85 | int state; | |
86 | struct mutex dev_lock; | |
87 | u16 comid; | |
88 | u32 hsn; | |
89 | u32 tsn; | |
90 | u64 align; | |
91 | u64 lowest_lba; | |
92 | ||
93 | size_t pos; | |
94 | u8 cmd[IO_BUFFER_LENGTH]; | |
95 | u8 resp[IO_BUFFER_LENGTH]; | |
96 | ||
97 | struct parsed_resp parsed; | |
98 | size_t prev_d_len; | |
99 | void *prev_data; | |
100 | ||
101 | struct list_head unlk_lst; | |
102 | }; | |
103 | ||
104 | ||
455a7b23 SB |
105 | static const u8 opaluid[][OPAL_UID_LENGTH] = { |
106 | /* users */ | |
107 | [OPAL_SMUID_UID] = | |
108 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff }, | |
109 | [OPAL_THISSP_UID] = | |
110 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }, | |
111 | [OPAL_ADMINSP_UID] = | |
112 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 }, | |
113 | [OPAL_LOCKINGSP_UID] = | |
114 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 }, | |
115 | [OPAL_ENTERPRISE_LOCKINGSP_UID] = | |
116 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 }, | |
117 | [OPAL_ANYBODY_UID] = | |
118 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 }, | |
119 | [OPAL_SID_UID] = | |
120 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 }, | |
121 | [OPAL_ADMIN1_UID] = | |
122 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 }, | |
123 | [OPAL_USER1_UID] = | |
124 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 }, | |
125 | [OPAL_USER2_UID] = | |
126 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 }, | |
127 | [OPAL_PSID_UID] = | |
128 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 }, | |
129 | [OPAL_ENTERPRISE_BANDMASTER0_UID] = | |
130 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 }, | |
131 | [OPAL_ENTERPRISE_ERASEMASTER_UID] = | |
132 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 }, | |
133 | ||
134 | /* tables */ | |
135 | ||
136 | [OPAL_LOCKINGRANGE_GLOBAL] = | |
137 | { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 }, | |
138 | [OPAL_LOCKINGRANGE_ACE_RDLOCKED] = | |
139 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 }, | |
140 | [OPAL_LOCKINGRANGE_ACE_WRLOCKED] = | |
141 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 }, | |
142 | [OPAL_MBRCONTROL] = | |
143 | { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 }, | |
144 | [OPAL_MBR] = | |
145 | { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 }, | |
146 | [OPAL_AUTHORITY_TABLE] = | |
147 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00}, | |
148 | [OPAL_C_PIN_TABLE] = | |
149 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00}, | |
150 | [OPAL_LOCKING_INFO_TABLE] = | |
151 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 }, | |
152 | [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] = | |
153 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 }, | |
154 | ||
155 | /* C_PIN_TABLE object ID's */ | |
156 | ||
157 | [OPAL_C_PIN_MSID] = | |
158 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02}, | |
159 | [OPAL_C_PIN_SID] = | |
160 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01}, | |
161 | [OPAL_C_PIN_ADMIN1] = | |
162 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01}, | |
163 | ||
164 | /* half UID's (only first 4 bytes used) */ | |
165 | ||
166 | [OPAL_HALF_UID_AUTHORITY_OBJ_REF] = | |
167 | { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff }, | |
168 | [OPAL_HALF_UID_BOOLEAN_ACE] = | |
169 | { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff }, | |
170 | ||
171 | /* special value for omitted optional parameter */ | |
172 | [OPAL_UID_HEXFF] = | |
173 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, | |
174 | }; | |
175 | ||
176 | /* | |
177 | * TCG Storage SSC Methods. | |
178 | * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
179 | * Section: 6.3 Assigned UIDs | |
180 | */ | |
181 | static const u8 opalmethod[][OPAL_UID_LENGTH] = { | |
182 | [OPAL_PROPERTIES] = | |
183 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 }, | |
184 | [OPAL_STARTSESSION] = | |
185 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 }, | |
186 | [OPAL_REVERT] = | |
187 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 }, | |
188 | [OPAL_ACTIVATE] = | |
189 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 }, | |
190 | [OPAL_EGET] = | |
191 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 }, | |
192 | [OPAL_ESET] = | |
193 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 }, | |
194 | [OPAL_NEXT] = | |
195 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 }, | |
196 | [OPAL_EAUTHENTICATE] = | |
197 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c }, | |
198 | [OPAL_GETACL] = | |
199 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d }, | |
200 | [OPAL_GENKEY] = | |
201 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 }, | |
202 | [OPAL_REVERTSP] = | |
203 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 }, | |
204 | [OPAL_GET] = | |
205 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 }, | |
206 | [OPAL_SET] = | |
207 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 }, | |
208 | [OPAL_AUTHENTICATE] = | |
209 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c }, | |
210 | [OPAL_RANDOM] = | |
211 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 }, | |
212 | [OPAL_ERASE] = | |
213 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 }, | |
214 | }; | |
215 | ||
216 | typedef int (cont_fn)(struct opal_dev *dev); | |
217 | ||
218 | static int end_opal_session_error(struct opal_dev *dev); | |
219 | ||
220 | struct opal_suspend_data { | |
221 | struct opal_lock_unlock unlk; | |
222 | u8 lr; | |
223 | struct list_head node; | |
224 | }; | |
225 | ||
226 | /* | |
227 | * Derived from: | |
228 | * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
229 | * Section: 5.1.5 Method Status Codes | |
230 | */ | |
231 | static const char * const opal_errors[] = { | |
232 | "Success", | |
233 | "Not Authorized", | |
234 | "Unknown Error", | |
235 | "SP Busy", | |
236 | "SP Failed", | |
237 | "SP Disabled", | |
238 | "SP Frozen", | |
239 | "No Sessions Available", | |
240 | "Uniqueness Conflict", | |
241 | "Insufficient Space", | |
242 | "Insufficient Rows", | |
243 | "Invalid Function", | |
244 | "Invalid Parameter", | |
245 | "Invalid Reference", | |
246 | "Unknown Error", | |
247 | "TPER Malfunction", | |
248 | "Transaction Failure", | |
249 | "Response Overflow", | |
250 | "Authority Locked Out", | |
251 | }; | |
252 | ||
253 | static const char *opal_error_to_human(int error) | |
254 | { | |
255 | if (error == 0x3f) | |
256 | return "Failed"; | |
257 | ||
258 | if (error >= ARRAY_SIZE(opal_errors) || error < 0) | |
259 | return "Unknown Error"; | |
260 | ||
261 | return opal_errors[error]; | |
262 | } | |
263 | ||
264 | static void print_buffer(const u8 *ptr, u32 length) | |
265 | { | |
266 | #ifdef DEBUG | |
267 | print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length); | |
268 | pr_debug("\n"); | |
269 | #endif | |
270 | } | |
271 | ||
272 | static bool check_tper(const void *data) | |
273 | { | |
274 | const struct d0_tper_features *tper = data; | |
275 | u8 flags = tper->supported_features; | |
276 | ||
277 | if (!(flags & TPER_SYNC_SUPPORTED)) { | |
278 | pr_err("TPer sync not supported. flags = %d\n", | |
279 | tper->supported_features); | |
280 | return false; | |
281 | } | |
282 | ||
283 | return true; | |
284 | } | |
285 | ||
286 | static bool check_sum(const void *data) | |
287 | { | |
288 | const struct d0_single_user_mode *sum = data; | |
289 | u32 nlo = be32_to_cpu(sum->num_locking_objects); | |
290 | ||
291 | if (nlo == 0) { | |
292 | pr_err("Need at least one locking object.\n"); | |
293 | return false; | |
294 | } | |
295 | ||
296 | pr_debug("Number of locking objects: %d\n", nlo); | |
297 | ||
298 | return true; | |
299 | } | |
300 | ||
301 | static u16 get_comid_v100(const void *data) | |
302 | { | |
303 | const struct d0_opal_v100 *v100 = data; | |
304 | ||
305 | return be16_to_cpu(v100->baseComID); | |
306 | } | |
307 | ||
308 | static u16 get_comid_v200(const void *data) | |
309 | { | |
310 | const struct d0_opal_v200 *v200 = data; | |
311 | ||
312 | return be16_to_cpu(v200->baseComID); | |
313 | } | |
314 | ||
315 | static int opal_send_cmd(struct opal_dev *dev) | |
316 | { | |
4f1244c8 | 317 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
318 | dev->cmd, IO_BUFFER_LENGTH, |
319 | true); | |
320 | } | |
321 | ||
322 | static int opal_recv_cmd(struct opal_dev *dev) | |
323 | { | |
4f1244c8 | 324 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
325 | dev->resp, IO_BUFFER_LENGTH, |
326 | false); | |
327 | } | |
328 | ||
329 | static int opal_recv_check(struct opal_dev *dev) | |
330 | { | |
331 | size_t buflen = IO_BUFFER_LENGTH; | |
332 | void *buffer = dev->resp; | |
333 | struct opal_header *hdr = buffer; | |
334 | int ret; | |
335 | ||
336 | do { | |
337 | pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n", | |
338 | hdr->cp.outstandingData, | |
339 | hdr->cp.minTransfer); | |
340 | ||
341 | if (hdr->cp.outstandingData == 0 || | |
342 | hdr->cp.minTransfer != 0) | |
343 | return 0; | |
344 | ||
345 | memset(buffer, 0, buflen); | |
346 | ret = opal_recv_cmd(dev); | |
347 | } while (!ret); | |
348 | ||
349 | return ret; | |
350 | } | |
351 | ||
352 | static int opal_send_recv(struct opal_dev *dev, cont_fn *cont) | |
353 | { | |
354 | int ret; | |
355 | ||
356 | ret = opal_send_cmd(dev); | |
357 | if (ret) | |
358 | return ret; | |
359 | ret = opal_recv_cmd(dev); | |
360 | if (ret) | |
361 | return ret; | |
362 | ret = opal_recv_check(dev); | |
363 | if (ret) | |
364 | return ret; | |
365 | return cont(dev); | |
366 | } | |
367 | ||
368 | static void check_geometry(struct opal_dev *dev, const void *data) | |
369 | { | |
370 | const struct d0_geometry_features *geo = data; | |
371 | ||
372 | dev->align = geo->alignment_granularity; | |
373 | dev->lowest_lba = geo->lowest_aligned_lba; | |
374 | } | |
375 | ||
376 | static int next(struct opal_dev *dev) | |
377 | { | |
378 | opal_step func; | |
379 | int error = 0; | |
380 | ||
381 | do { | |
382 | func = dev->funcs[dev->state]; | |
383 | if (!func) | |
384 | break; | |
385 | ||
386 | error = func(dev); | |
387 | if (error) { | |
388 | pr_err("Error on step function: %d with error %d: %s\n", | |
389 | dev->state, error, | |
390 | opal_error_to_human(error)); | |
391 | ||
392 | /* For each OPAL command we do a discovery0 then we | |
393 | * start some sort of session. | |
394 | * If we haven't passed state 1 then there was an error | |
395 | * on discovery0 or during the attempt to start a | |
396 | * session. Therefore we shouldn't attempt to terminate | |
397 | * a session, as one has not yet been created. | |
398 | */ | |
399 | if (dev->state > 1) | |
400 | return end_opal_session_error(dev); | |
401 | } | |
402 | dev->state++; | |
403 | } while (!error); | |
404 | ||
405 | return error; | |
406 | } | |
407 | ||
408 | static int opal_discovery0_end(struct opal_dev *dev) | |
409 | { | |
410 | bool found_com_id = false, supported = true, single_user = false; | |
411 | const struct d0_header *hdr = (struct d0_header *)dev->resp; | |
412 | const u8 *epos = dev->resp, *cpos = dev->resp; | |
413 | u16 comid = 0; | |
414 | ||
415 | print_buffer(dev->resp, be32_to_cpu(hdr->length)); | |
416 | ||
417 | epos += be32_to_cpu(hdr->length); /* end of buffer */ | |
418 | cpos += sizeof(*hdr); /* current position on buffer */ | |
419 | ||
420 | while (cpos < epos && supported) { | |
421 | const struct d0_features *body = | |
422 | (const struct d0_features *)cpos; | |
423 | ||
424 | switch (be16_to_cpu(body->code)) { | |
425 | case FC_TPER: | |
426 | supported = check_tper(body->features); | |
427 | break; | |
428 | case FC_SINGLEUSER: | |
429 | single_user = check_sum(body->features); | |
430 | break; | |
431 | case FC_GEOMETRY: | |
432 | check_geometry(dev, body); | |
433 | break; | |
434 | case FC_LOCKING: | |
435 | case FC_ENTERPRISE: | |
436 | case FC_DATASTORE: | |
437 | /* some ignored properties */ | |
438 | pr_debug("Found OPAL feature description: %d\n", | |
439 | be16_to_cpu(body->code)); | |
440 | break; | |
441 | case FC_OPALV100: | |
442 | comid = get_comid_v100(body->features); | |
443 | found_com_id = true; | |
444 | break; | |
445 | case FC_OPALV200: | |
446 | comid = get_comid_v200(body->features); | |
447 | found_com_id = true; | |
448 | break; | |
449 | case 0xbfff ... 0xffff: | |
450 | /* vendor specific, just ignore */ | |
451 | break; | |
452 | default: | |
453 | pr_debug("OPAL Unknown feature: %d\n", | |
454 | be16_to_cpu(body->code)); | |
455 | ||
456 | } | |
457 | cpos += body->length + 4; | |
458 | } | |
459 | ||
460 | if (!supported) { | |
f5b37b7c | 461 | pr_debug("This device is not Opal enabled. Not Supported!\n"); |
455a7b23 SB |
462 | return -EOPNOTSUPP; |
463 | } | |
464 | ||
465 | if (!single_user) | |
f5b37b7c | 466 | pr_debug("Device doesn't support single user mode\n"); |
455a7b23 SB |
467 | |
468 | ||
469 | if (!found_com_id) { | |
f5b37b7c | 470 | pr_debug("Could not find OPAL comid for device. Returning early\n"); |
455a7b23 SB |
471 | return -EOPNOTSUPP;; |
472 | } | |
473 | ||
474 | dev->comid = comid; | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
479 | static int opal_discovery0(struct opal_dev *dev) | |
480 | { | |
481 | int ret; | |
482 | ||
483 | memset(dev->resp, 0, IO_BUFFER_LENGTH); | |
484 | dev->comid = OPAL_DISCOVERY_COMID; | |
485 | ret = opal_recv_cmd(dev); | |
486 | if (ret) | |
487 | return ret; | |
488 | return opal_discovery0_end(dev); | |
489 | } | |
490 | ||
491 | static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok) | |
492 | { | |
493 | if (*err) | |
494 | return; | |
495 | if (cmd->pos >= IO_BUFFER_LENGTH - 1) { | |
496 | pr_err("Error adding u8: end of buffer.\n"); | |
497 | *err = -ERANGE; | |
498 | return; | |
499 | } | |
500 | cmd->cmd[cmd->pos++] = tok; | |
501 | } | |
502 | ||
503 | static void add_short_atom_header(struct opal_dev *cmd, bool bytestring, | |
504 | bool has_sign, int len) | |
505 | { | |
506 | u8 atom; | |
507 | int err = 0; | |
508 | ||
509 | atom = SHORT_ATOM_ID; | |
510 | atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0; | |
511 | atom |= has_sign ? SHORT_ATOM_SIGNED : 0; | |
512 | atom |= len & SHORT_ATOM_LEN_MASK; | |
513 | ||
514 | add_token_u8(&err, cmd, atom); | |
515 | } | |
516 | ||
517 | static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring, | |
518 | bool has_sign, int len) | |
519 | { | |
520 | u8 header0; | |
521 | ||
522 | header0 = MEDIUM_ATOM_ID; | |
523 | header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0; | |
524 | header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0; | |
525 | header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK; | |
526 | cmd->cmd[cmd->pos++] = header0; | |
527 | cmd->cmd[cmd->pos++] = len; | |
528 | } | |
529 | ||
530 | static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) | |
531 | { | |
532 | ||
533 | size_t len; | |
534 | int msb; | |
535 | u8 n; | |
536 | ||
537 | if (!(number & ~TINY_ATOM_DATA_MASK)) { | |
538 | add_token_u8(err, cmd, number); | |
539 | return; | |
540 | } | |
541 | ||
542 | msb = fls(number); | |
543 | len = DIV_ROUND_UP(msb, 4); | |
544 | ||
545 | if (cmd->pos >= IO_BUFFER_LENGTH - len - 1) { | |
546 | pr_err("Error adding u64: end of buffer.\n"); | |
547 | *err = -ERANGE; | |
548 | return; | |
549 | } | |
550 | add_short_atom_header(cmd, false, false, len); | |
551 | while (len--) { | |
552 | n = number >> (len * 8); | |
553 | add_token_u8(err, cmd, n); | |
554 | } | |
555 | } | |
556 | ||
557 | static void add_token_bytestring(int *err, struct opal_dev *cmd, | |
558 | const u8 *bytestring, size_t len) | |
559 | { | |
560 | size_t header_len = 1; | |
561 | bool is_short_atom = true; | |
562 | ||
563 | if (*err) | |
564 | return; | |
565 | ||
566 | if (len & ~SHORT_ATOM_LEN_MASK) { | |
567 | header_len = 2; | |
568 | is_short_atom = false; | |
569 | } | |
570 | ||
571 | if (len >= IO_BUFFER_LENGTH - cmd->pos - header_len) { | |
572 | pr_err("Error adding bytestring: end of buffer.\n"); | |
573 | *err = -ERANGE; | |
574 | return; | |
575 | } | |
576 | ||
577 | if (is_short_atom) | |
578 | add_short_atom_header(cmd, true, false, len); | |
579 | else | |
580 | add_medium_atom_header(cmd, true, false, len); | |
581 | ||
582 | memcpy(&cmd->cmd[cmd->pos], bytestring, len); | |
583 | cmd->pos += len; | |
584 | ||
585 | } | |
586 | ||
587 | static int build_locking_range(u8 *buffer, size_t length, u8 lr) | |
588 | { | |
589 | if (length > OPAL_UID_LENGTH) { | |
590 | pr_err("Can't build locking range. Length OOB\n"); | |
591 | return -ERANGE; | |
592 | } | |
593 | ||
594 | memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH); | |
595 | ||
596 | if (lr == 0) | |
597 | return 0; | |
598 | buffer[5] = LOCKING_RANGE_NON_GLOBAL; | |
599 | buffer[7] = lr; | |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
604 | static int build_locking_user(u8 *buffer, size_t length, u8 lr) | |
605 | { | |
606 | if (length > OPAL_UID_LENGTH) { | |
607 | pr_err("Can't build locking range user, Length OOB\n"); | |
608 | return -ERANGE; | |
609 | } | |
610 | ||
611 | memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
612 | ||
613 | buffer[7] = lr + 1; | |
614 | ||
615 | return 0; | |
616 | } | |
617 | ||
618 | static void set_comid(struct opal_dev *cmd, u16 comid) | |
619 | { | |
620 | struct opal_header *hdr = (struct opal_header *)cmd->cmd; | |
621 | ||
622 | hdr->cp.extendedComID[0] = comid >> 8; | |
623 | hdr->cp.extendedComID[1] = comid; | |
624 | hdr->cp.extendedComID[2] = 0; | |
625 | hdr->cp.extendedComID[3] = 0; | |
626 | } | |
627 | ||
628 | static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn) | |
629 | { | |
630 | struct opal_header *hdr; | |
631 | int err = 0; | |
632 | ||
633 | add_token_u8(&err, cmd, OPAL_ENDOFDATA); | |
634 | add_token_u8(&err, cmd, OPAL_STARTLIST); | |
635 | add_token_u8(&err, cmd, 0); | |
636 | add_token_u8(&err, cmd, 0); | |
637 | add_token_u8(&err, cmd, 0); | |
638 | add_token_u8(&err, cmd, OPAL_ENDLIST); | |
639 | ||
640 | if (err) { | |
641 | pr_err("Error finalizing command.\n"); | |
642 | return -EFAULT; | |
643 | } | |
644 | ||
645 | hdr = (struct opal_header *) cmd->cmd; | |
646 | ||
647 | hdr->pkt.tsn = cpu_to_be32(tsn); | |
648 | hdr->pkt.hsn = cpu_to_be32(hsn); | |
649 | ||
650 | hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr)); | |
651 | while (cmd->pos % 4) { | |
652 | if (cmd->pos >= IO_BUFFER_LENGTH) { | |
653 | pr_err("Error: Buffer overrun\n"); | |
654 | return -ERANGE; | |
655 | } | |
656 | cmd->cmd[cmd->pos++] = 0; | |
657 | } | |
658 | hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) - | |
659 | sizeof(hdr->pkt)); | |
660 | hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp)); | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
cccb9241 JD |
665 | static const struct opal_resp_tok *response_get_token( |
666 | const struct parsed_resp *resp, | |
667 | int n) | |
455a7b23 SB |
668 | { |
669 | const struct opal_resp_tok *tok; | |
670 | ||
671 | if (n >= resp->num) { | |
672 | pr_err("Token number doesn't exist: %d, resp: %d\n", | |
673 | n, resp->num); | |
cccb9241 | 674 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
675 | } |
676 | ||
677 | tok = &resp->toks[n]; | |
678 | if (tok->len == 0) { | |
679 | pr_err("Token length must be non-zero\n"); | |
cccb9241 | 680 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
681 | } |
682 | ||
cccb9241 | 683 | return tok; |
455a7b23 SB |
684 | } |
685 | ||
aedb6e24 JD |
686 | static ssize_t response_parse_tiny(struct opal_resp_tok *tok, |
687 | const u8 *pos) | |
455a7b23 SB |
688 | { |
689 | tok->pos = pos; | |
690 | tok->len = 1; | |
691 | tok->width = OPAL_WIDTH_TINY; | |
692 | ||
693 | if (pos[0] & TINY_ATOM_SIGNED) { | |
694 | tok->type = OPAL_DTA_TOKENID_SINT; | |
695 | } else { | |
696 | tok->type = OPAL_DTA_TOKENID_UINT; | |
697 | tok->stored.u = pos[0] & 0x3f; | |
698 | } | |
699 | ||
700 | return tok->len; | |
701 | } | |
702 | ||
aedb6e24 JD |
703 | static ssize_t response_parse_short(struct opal_resp_tok *tok, |
704 | const u8 *pos) | |
455a7b23 SB |
705 | { |
706 | tok->pos = pos; | |
707 | tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1; | |
708 | tok->width = OPAL_WIDTH_SHORT; | |
709 | ||
710 | if (pos[0] & SHORT_ATOM_BYTESTRING) { | |
711 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
712 | } else if (pos[0] & SHORT_ATOM_SIGNED) { | |
713 | tok->type = OPAL_DTA_TOKENID_SINT; | |
714 | } else { | |
715 | u64 u_integer = 0; | |
aedb6e24 | 716 | ssize_t i, b = 0; |
455a7b23 SB |
717 | |
718 | tok->type = OPAL_DTA_TOKENID_UINT; | |
719 | if (tok->len > 9) { | |
720 | pr_warn("uint64 with more than 8 bytes\n"); | |
721 | return -EINVAL; | |
722 | } | |
723 | for (i = tok->len - 1; i > 0; i--) { | |
724 | u_integer |= ((u64)pos[i] << (8 * b)); | |
725 | b++; | |
726 | } | |
727 | tok->stored.u = u_integer; | |
728 | } | |
729 | ||
730 | return tok->len; | |
731 | } | |
732 | ||
aedb6e24 JD |
733 | static ssize_t response_parse_medium(struct opal_resp_tok *tok, |
734 | const u8 *pos) | |
455a7b23 SB |
735 | { |
736 | tok->pos = pos; | |
737 | tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2; | |
738 | tok->width = OPAL_WIDTH_MEDIUM; | |
739 | ||
740 | if (pos[0] & MEDIUM_ATOM_BYTESTRING) | |
741 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
742 | else if (pos[0] & MEDIUM_ATOM_SIGNED) | |
743 | tok->type = OPAL_DTA_TOKENID_SINT; | |
744 | else | |
745 | tok->type = OPAL_DTA_TOKENID_UINT; | |
746 | ||
747 | return tok->len; | |
748 | } | |
749 | ||
aedb6e24 JD |
750 | static ssize_t response_parse_long(struct opal_resp_tok *tok, |
751 | const u8 *pos) | |
455a7b23 SB |
752 | { |
753 | tok->pos = pos; | |
754 | tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4; | |
755 | tok->width = OPAL_WIDTH_LONG; | |
756 | ||
757 | if (pos[0] & LONG_ATOM_BYTESTRING) | |
758 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
759 | else if (pos[0] & LONG_ATOM_SIGNED) | |
760 | tok->type = OPAL_DTA_TOKENID_SINT; | |
761 | else | |
762 | tok->type = OPAL_DTA_TOKENID_UINT; | |
763 | ||
764 | return tok->len; | |
765 | } | |
766 | ||
aedb6e24 JD |
767 | static ssize_t response_parse_token(struct opal_resp_tok *tok, |
768 | const u8 *pos) | |
455a7b23 SB |
769 | { |
770 | tok->pos = pos; | |
771 | tok->len = 1; | |
772 | tok->type = OPAL_DTA_TOKENID_TOKEN; | |
773 | tok->width = OPAL_WIDTH_TOKEN; | |
774 | ||
775 | return tok->len; | |
776 | } | |
777 | ||
778 | static int response_parse(const u8 *buf, size_t length, | |
779 | struct parsed_resp *resp) | |
780 | { | |
781 | const struct opal_header *hdr; | |
782 | struct opal_resp_tok *iter; | |
783 | int num_entries = 0; | |
784 | int total; | |
aedb6e24 | 785 | ssize_t token_length; |
455a7b23 SB |
786 | const u8 *pos; |
787 | ||
788 | if (!buf) | |
789 | return -EFAULT; | |
790 | ||
791 | if (!resp) | |
792 | return -EFAULT; | |
793 | ||
794 | hdr = (struct opal_header *)buf; | |
795 | pos = buf; | |
796 | pos += sizeof(*hdr); | |
797 | ||
798 | pr_debug("Response size: cp: %d, pkt: %d, subpkt: %d\n", | |
799 | be32_to_cpu(hdr->cp.length), | |
800 | be32_to_cpu(hdr->pkt.length), | |
801 | be32_to_cpu(hdr->subpkt.length)); | |
802 | ||
803 | if (hdr->cp.length == 0 || hdr->pkt.length == 0 || | |
804 | hdr->subpkt.length == 0) { | |
805 | pr_err("Bad header length. cp: %d, pkt: %d, subpkt: %d\n", | |
806 | be32_to_cpu(hdr->cp.length), | |
807 | be32_to_cpu(hdr->pkt.length), | |
808 | be32_to_cpu(hdr->subpkt.length)); | |
809 | print_buffer(pos, sizeof(*hdr)); | |
810 | return -EINVAL; | |
811 | } | |
812 | ||
813 | if (pos > buf + length) | |
814 | return -EFAULT; | |
815 | ||
816 | iter = resp->toks; | |
817 | total = be32_to_cpu(hdr->subpkt.length); | |
818 | print_buffer(pos, total); | |
819 | while (total > 0) { | |
820 | if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */ | |
821 | token_length = response_parse_tiny(iter, pos); | |
822 | else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */ | |
823 | token_length = response_parse_short(iter, pos); | |
824 | else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */ | |
825 | token_length = response_parse_medium(iter, pos); | |
826 | else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */ | |
827 | token_length = response_parse_long(iter, pos); | |
828 | else /* TOKEN */ | |
829 | token_length = response_parse_token(iter, pos); | |
830 | ||
aedb6e24 JD |
831 | if (token_length < 0) |
832 | return token_length; | |
455a7b23 SB |
833 | |
834 | pos += token_length; | |
835 | total -= token_length; | |
836 | iter++; | |
837 | num_entries++; | |
838 | } | |
839 | ||
840 | if (num_entries == 0) { | |
841 | pr_err("Couldn't parse response.\n"); | |
842 | return -EINVAL; | |
843 | } | |
844 | resp->num = num_entries; | |
845 | ||
846 | return 0; | |
847 | } | |
848 | ||
849 | static size_t response_get_string(const struct parsed_resp *resp, int n, | |
850 | const char **store) | |
851 | { | |
852 | *store = NULL; | |
853 | if (!resp) { | |
854 | pr_err("Response is NULL\n"); | |
855 | return 0; | |
856 | } | |
857 | ||
858 | if (n > resp->num) { | |
859 | pr_err("Response has %d tokens. Can't access %d\n", | |
860 | resp->num, n); | |
861 | return 0; | |
862 | } | |
863 | ||
864 | if (resp->toks[n].type != OPAL_DTA_TOKENID_BYTESTRING) { | |
865 | pr_err("Token is not a byte string!\n"); | |
866 | return 0; | |
867 | } | |
868 | ||
869 | *store = resp->toks[n].pos + 1; | |
870 | return resp->toks[n].len - 1; | |
871 | } | |
872 | ||
873 | static u64 response_get_u64(const struct parsed_resp *resp, int n) | |
874 | { | |
875 | if (!resp) { | |
876 | pr_err("Response is NULL\n"); | |
877 | return 0; | |
878 | } | |
879 | ||
880 | if (n > resp->num) { | |
881 | pr_err("Response has %d tokens. Can't access %d\n", | |
882 | resp->num, n); | |
883 | return 0; | |
884 | } | |
885 | ||
886 | if (resp->toks[n].type != OPAL_DTA_TOKENID_UINT) { | |
887 | pr_err("Token is not unsigned it: %d\n", | |
888 | resp->toks[n].type); | |
889 | return 0; | |
890 | } | |
891 | ||
892 | if (!(resp->toks[n].width == OPAL_WIDTH_TINY || | |
893 | resp->toks[n].width == OPAL_WIDTH_SHORT)) { | |
894 | pr_err("Atom is not short or tiny: %d\n", | |
895 | resp->toks[n].width); | |
896 | return 0; | |
897 | } | |
898 | ||
899 | return resp->toks[n].stored.u; | |
900 | } | |
901 | ||
cccb9241 JD |
902 | static bool response_token_matches(const struct opal_resp_tok *token, u8 match) |
903 | { | |
904 | if (IS_ERR(token) || | |
905 | token->type != OPAL_DTA_TOKENID_TOKEN || | |
906 | token->pos[0] != match) | |
907 | return false; | |
908 | return true; | |
909 | } | |
910 | ||
455a7b23 SB |
911 | static u8 response_status(const struct parsed_resp *resp) |
912 | { | |
cccb9241 JD |
913 | const struct opal_resp_tok *tok; |
914 | ||
915 | tok = response_get_token(resp, 0); | |
916 | if (response_token_matches(tok, OPAL_ENDOFSESSION)) | |
455a7b23 | 917 | return 0; |
455a7b23 SB |
918 | |
919 | if (resp->num < 5) | |
920 | return DTAERROR_NO_METHOD_STATUS; | |
921 | ||
cccb9241 JD |
922 | tok = response_get_token(resp, resp->num - 5); |
923 | if (!response_token_matches(tok, OPAL_STARTLIST)) | |
924 | return DTAERROR_NO_METHOD_STATUS; | |
925 | ||
926 | tok = response_get_token(resp, resp->num - 1); | |
927 | if (!response_token_matches(tok, OPAL_ENDLIST)) | |
455a7b23 SB |
928 | return DTAERROR_NO_METHOD_STATUS; |
929 | ||
930 | return response_get_u64(resp, resp->num - 4); | |
931 | } | |
932 | ||
933 | /* Parses and checks for errors */ | |
934 | static int parse_and_check_status(struct opal_dev *dev) | |
935 | { | |
936 | int error; | |
937 | ||
938 | print_buffer(dev->cmd, dev->pos); | |
939 | ||
940 | error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed); | |
941 | if (error) { | |
942 | pr_err("Couldn't parse response.\n"); | |
943 | return error; | |
944 | } | |
945 | ||
946 | return response_status(&dev->parsed); | |
947 | } | |
948 | ||
949 | static void clear_opal_cmd(struct opal_dev *dev) | |
950 | { | |
951 | dev->pos = sizeof(struct opal_header); | |
952 | memset(dev->cmd, 0, IO_BUFFER_LENGTH); | |
953 | } | |
954 | ||
955 | static int start_opal_session_cont(struct opal_dev *dev) | |
956 | { | |
957 | u32 hsn, tsn; | |
958 | int error = 0; | |
959 | ||
960 | error = parse_and_check_status(dev); | |
961 | if (error) | |
962 | return error; | |
963 | ||
964 | hsn = response_get_u64(&dev->parsed, 4); | |
965 | tsn = response_get_u64(&dev->parsed, 5); | |
966 | ||
967 | if (hsn == 0 && tsn == 0) { | |
968 | pr_err("Couldn't authenticate session\n"); | |
969 | return -EPERM; | |
970 | } | |
971 | ||
972 | dev->hsn = hsn; | |
973 | dev->tsn = tsn; | |
974 | return 0; | |
975 | } | |
976 | ||
977 | static void add_suspend_info(struct opal_dev *dev, | |
978 | struct opal_suspend_data *sus) | |
979 | { | |
980 | struct opal_suspend_data *iter; | |
981 | ||
982 | list_for_each_entry(iter, &dev->unlk_lst, node) { | |
983 | if (iter->lr == sus->lr) { | |
984 | list_del(&iter->node); | |
985 | kfree(iter); | |
986 | break; | |
987 | } | |
988 | } | |
989 | list_add_tail(&sus->node, &dev->unlk_lst); | |
990 | } | |
991 | ||
992 | static int end_session_cont(struct opal_dev *dev) | |
993 | { | |
994 | dev->hsn = 0; | |
995 | dev->tsn = 0; | |
996 | return parse_and_check_status(dev); | |
997 | } | |
998 | ||
999 | static int finalize_and_send(struct opal_dev *dev, cont_fn cont) | |
1000 | { | |
1001 | int ret; | |
1002 | ||
1003 | ret = cmd_finalize(dev, dev->hsn, dev->tsn); | |
1004 | if (ret) { | |
1005 | pr_err("Error finalizing command buffer: %d\n", ret); | |
1006 | return ret; | |
1007 | } | |
1008 | ||
1009 | print_buffer(dev->cmd, dev->pos); | |
1010 | ||
1011 | return opal_send_recv(dev, cont); | |
1012 | } | |
1013 | ||
1014 | static int gen_key(struct opal_dev *dev) | |
1015 | { | |
1016 | const u8 *method; | |
1017 | u8 uid[OPAL_UID_LENGTH]; | |
1018 | int err = 0; | |
1019 | ||
1020 | clear_opal_cmd(dev); | |
1021 | set_comid(dev, dev->comid); | |
1022 | ||
1023 | memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len)); | |
1024 | method = opalmethod[OPAL_GENKEY]; | |
1025 | kfree(dev->prev_data); | |
1026 | dev->prev_data = NULL; | |
1027 | ||
1028 | add_token_u8(&err, dev, OPAL_CALL); | |
1029 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1030 | add_token_bytestring(&err, dev, opalmethod[OPAL_GENKEY], | |
1031 | OPAL_UID_LENGTH); | |
1032 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1033 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1034 | ||
1035 | if (err) { | |
1036 | pr_err("Error building gen key command\n"); | |
1037 | return err; | |
1038 | ||
1039 | } | |
1040 | return finalize_and_send(dev, parse_and_check_status); | |
1041 | } | |
1042 | ||
1043 | static int get_active_key_cont(struct opal_dev *dev) | |
1044 | { | |
1045 | const char *activekey; | |
1046 | size_t keylen; | |
1047 | int error = 0; | |
1048 | ||
1049 | error = parse_and_check_status(dev); | |
1050 | if (error) | |
1051 | return error; | |
1052 | keylen = response_get_string(&dev->parsed, 4, &activekey); | |
1053 | if (!activekey) { | |
1054 | pr_err("%s: Couldn't extract the Activekey from the response\n", | |
1055 | __func__); | |
1056 | return OPAL_INVAL_PARAM; | |
1057 | } | |
1058 | dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL); | |
1059 | ||
1060 | if (!dev->prev_data) | |
1061 | return -ENOMEM; | |
1062 | ||
1063 | dev->prev_d_len = keylen; | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static int get_active_key(struct opal_dev *dev) | |
1069 | { | |
1070 | u8 uid[OPAL_UID_LENGTH]; | |
1071 | int err = 0; | |
1072 | u8 *lr; | |
1073 | ||
1074 | clear_opal_cmd(dev); | |
1075 | set_comid(dev, dev->comid); | |
1076 | lr = dev->func_data[dev->state]; | |
1077 | ||
1078 | err = build_locking_range(uid, sizeof(uid), *lr); | |
1079 | if (err) | |
1080 | return err; | |
1081 | ||
1082 | err = 0; | |
1083 | add_token_u8(&err, dev, OPAL_CALL); | |
1084 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1085 | add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH); | |
1086 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1087 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1088 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1089 | add_token_u8(&err, dev, 3); /* startCloumn */ | |
1090 | add_token_u8(&err, dev, 10); /* ActiveKey */ | |
1091 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1092 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1093 | add_token_u8(&err, dev, 4); /* endColumn */ | |
1094 | add_token_u8(&err, dev, 10); /* ActiveKey */ | |
1095 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1096 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1097 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1098 | if (err) { | |
1099 | pr_err("Error building get active key command\n"); | |
1100 | return err; | |
1101 | } | |
1102 | ||
1103 | return finalize_and_send(dev, get_active_key_cont); | |
1104 | } | |
1105 | ||
1106 | static int generic_lr_enable_disable(struct opal_dev *dev, | |
1107 | u8 *uid, bool rle, bool wle, | |
1108 | bool rl, bool wl) | |
1109 | { | |
1110 | int err = 0; | |
1111 | ||
1112 | add_token_u8(&err, dev, OPAL_CALL); | |
1113 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1114 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH); | |
1115 | ||
1116 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1117 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1118 | add_token_u8(&err, dev, OPAL_VALUES); | |
1119 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1120 | ||
1121 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1122 | add_token_u8(&err, dev, 5); /* ReadLockEnabled */ | |
1123 | add_token_u8(&err, dev, rle); | |
1124 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1125 | ||
1126 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1127 | add_token_u8(&err, dev, 6); /* WriteLockEnabled */ | |
1128 | add_token_u8(&err, dev, wle); | |
1129 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1130 | ||
1131 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1132 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1133 | add_token_u8(&err, dev, rl); | |
1134 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1135 | ||
1136 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1137 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1138 | add_token_u8(&err, dev, wl); | |
1139 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1140 | ||
1141 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1142 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1143 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1144 | return err; | |
1145 | } | |
1146 | ||
1147 | static inline int enable_global_lr(struct opal_dev *dev, u8 *uid, | |
1148 | struct opal_user_lr_setup *setup) | |
1149 | { | |
1150 | int err; | |
1151 | ||
1152 | err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE, | |
1153 | 0, 0); | |
1154 | if (err) | |
1155 | pr_err("Failed to create enable global lr command\n"); | |
1156 | return err; | |
1157 | } | |
1158 | ||
1159 | static int setup_locking_range(struct opal_dev *dev) | |
1160 | { | |
1161 | u8 uid[OPAL_UID_LENGTH]; | |
1162 | struct opal_user_lr_setup *setup; | |
1163 | u8 lr; | |
1164 | int err = 0; | |
1165 | ||
1166 | clear_opal_cmd(dev); | |
1167 | set_comid(dev, dev->comid); | |
1168 | ||
1169 | setup = dev->func_data[dev->state]; | |
1170 | lr = setup->session.opal_key.lr; | |
1171 | err = build_locking_range(uid, sizeof(uid), lr); | |
1172 | if (err) | |
1173 | return err; | |
1174 | ||
1175 | if (lr == 0) | |
1176 | err = enable_global_lr(dev, uid, setup); | |
1177 | else { | |
1178 | add_token_u8(&err, dev, OPAL_CALL); | |
1179 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1180 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], | |
1181 | OPAL_UID_LENGTH); | |
1182 | ||
1183 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1184 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1185 | add_token_u8(&err, dev, OPAL_VALUES); | |
1186 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1187 | ||
1188 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1189 | add_token_u8(&err, dev, 3); /* Ranges Start */ | |
1190 | add_token_u64(&err, dev, setup->range_start); | |
1191 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1192 | ||
1193 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1194 | add_token_u8(&err, dev, 4); /* Ranges length */ | |
1195 | add_token_u64(&err, dev, setup->range_length); | |
1196 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1197 | ||
1198 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1199 | add_token_u8(&err, dev, 5); /*ReadLockEnabled */ | |
1200 | add_token_u64(&err, dev, !!setup->RLE); | |
1201 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1202 | ||
1203 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1204 | add_token_u8(&err, dev, 6); /*WriteLockEnabled*/ | |
1205 | add_token_u64(&err, dev, !!setup->WLE); | |
1206 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1207 | ||
1208 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1209 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1210 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1211 | ||
1212 | } | |
1213 | if (err) { | |
1214 | pr_err("Error building Setup Locking range command.\n"); | |
1215 | return err; | |
1216 | ||
1217 | } | |
1218 | ||
1219 | return finalize_and_send(dev, parse_and_check_status); | |
1220 | } | |
1221 | ||
1222 | static int start_generic_opal_session(struct opal_dev *dev, | |
1223 | enum opal_uid auth, | |
1224 | enum opal_uid sp_type, | |
1225 | const char *key, | |
1226 | u8 key_len) | |
1227 | { | |
1228 | u32 hsn; | |
1229 | int err = 0; | |
1230 | ||
1231 | if (key == NULL && auth != OPAL_ANYBODY_UID) { | |
1232 | pr_err("%s: Attempted to open ADMIN_SP Session without a Host" \ | |
1233 | "Challenge, and not as the Anybody UID\n", __func__); | |
1234 | return OPAL_INVAL_PARAM; | |
1235 | } | |
1236 | ||
1237 | clear_opal_cmd(dev); | |
1238 | ||
1239 | set_comid(dev, dev->comid); | |
1240 | hsn = GENERIC_HOST_SESSION_NUM; | |
1241 | ||
1242 | add_token_u8(&err, dev, OPAL_CALL); | |
1243 | add_token_bytestring(&err, dev, opaluid[OPAL_SMUID_UID], | |
1244 | OPAL_UID_LENGTH); | |
1245 | add_token_bytestring(&err, dev, opalmethod[OPAL_STARTSESSION], | |
1246 | OPAL_UID_LENGTH); | |
1247 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1248 | add_token_u64(&err, dev, hsn); | |
1249 | add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH); | |
1250 | add_token_u8(&err, dev, 1); | |
1251 | ||
1252 | switch (auth) { | |
1253 | case OPAL_ANYBODY_UID: | |
1254 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1255 | break; | |
1256 | case OPAL_ADMIN1_UID: | |
1257 | case OPAL_SID_UID: | |
1258 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1259 | add_token_u8(&err, dev, 0); /* HostChallenge */ | |
1260 | add_token_bytestring(&err, dev, key, key_len); | |
1261 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1262 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1263 | add_token_u8(&err, dev, 3); /* HostSignAuth */ | |
1264 | add_token_bytestring(&err, dev, opaluid[auth], | |
1265 | OPAL_UID_LENGTH); | |
1266 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1267 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1268 | break; | |
1269 | default: | |
1270 | pr_err("Cannot start Admin SP session with auth %d\n", auth); | |
1271 | return OPAL_INVAL_PARAM; | |
1272 | } | |
1273 | ||
1274 | if (err) { | |
1275 | pr_err("Error building start adminsp session command.\n"); | |
1276 | return err; | |
1277 | } | |
1278 | ||
1279 | return finalize_and_send(dev, start_opal_session_cont); | |
1280 | } | |
1281 | ||
1282 | static int start_anybodyASP_opal_session(struct opal_dev *dev) | |
1283 | { | |
1284 | return start_generic_opal_session(dev, OPAL_ANYBODY_UID, | |
1285 | OPAL_ADMINSP_UID, NULL, 0); | |
1286 | } | |
1287 | ||
1288 | static int start_SIDASP_opal_session(struct opal_dev *dev) | |
1289 | { | |
1290 | int ret; | |
1291 | const u8 *key = dev->prev_data; | |
1292 | struct opal_key *okey; | |
1293 | ||
1294 | if (!key) { | |
1295 | okey = dev->func_data[dev->state]; | |
1296 | ret = start_generic_opal_session(dev, OPAL_SID_UID, | |
1297 | OPAL_ADMINSP_UID, | |
1298 | okey->key, | |
1299 | okey->key_len); | |
1300 | } else { | |
1301 | ret = start_generic_opal_session(dev, OPAL_SID_UID, | |
1302 | OPAL_ADMINSP_UID, | |
1303 | key, dev->prev_d_len); | |
1304 | kfree(key); | |
1305 | dev->prev_data = NULL; | |
1306 | } | |
1307 | return ret; | |
1308 | } | |
1309 | ||
1310 | static inline int start_admin1LSP_opal_session(struct opal_dev *dev) | |
1311 | { | |
1312 | struct opal_key *key = dev->func_data[dev->state]; | |
1313 | ||
1314 | return start_generic_opal_session(dev, OPAL_ADMIN1_UID, | |
1315 | OPAL_LOCKINGSP_UID, | |
1316 | key->key, key->key_len); | |
1317 | } | |
1318 | ||
1319 | static int start_auth_opal_session(struct opal_dev *dev) | |
1320 | { | |
1321 | u8 lk_ul_user[OPAL_UID_LENGTH]; | |
1322 | int err = 0; | |
1323 | ||
1324 | struct opal_session_info *session = dev->func_data[dev->state]; | |
1325 | size_t keylen = session->opal_key.key_len; | |
1326 | u8 *key = session->opal_key.key; | |
1327 | u32 hsn = GENERIC_HOST_SESSION_NUM; | |
1328 | ||
1329 | clear_opal_cmd(dev); | |
1330 | set_comid(dev, dev->comid); | |
1331 | ||
1332 | if (session->sum) { | |
1333 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), | |
1334 | session->opal_key.lr); | |
1335 | if (err) | |
1336 | return err; | |
1337 | ||
1338 | } else if (session->who != OPAL_ADMIN1 && !session->sum) { | |
1339 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), | |
1340 | session->who - 1); | |
1341 | if (err) | |
1342 | return err; | |
1343 | } else | |
1344 | memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH); | |
1345 | ||
1346 | add_token_u8(&err, dev, OPAL_CALL); | |
1347 | add_token_bytestring(&err, dev, opaluid[OPAL_SMUID_UID], | |
1348 | OPAL_UID_LENGTH); | |
1349 | add_token_bytestring(&err, dev, opalmethod[OPAL_STARTSESSION], | |
1350 | OPAL_UID_LENGTH); | |
1351 | ||
1352 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1353 | add_token_u64(&err, dev, hsn); | |
1354 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], | |
1355 | OPAL_UID_LENGTH); | |
1356 | add_token_u8(&err, dev, 1); | |
1357 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1358 | add_token_u8(&err, dev, 0); | |
1359 | add_token_bytestring(&err, dev, key, keylen); | |
1360 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1361 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1362 | add_token_u8(&err, dev, 3); | |
1363 | add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH); | |
1364 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1365 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1366 | ||
1367 | if (err) { | |
1368 | pr_err("Error building STARTSESSION command.\n"); | |
1369 | return err; | |
1370 | } | |
1371 | ||
1372 | return finalize_and_send(dev, start_opal_session_cont); | |
1373 | } | |
1374 | ||
1375 | static int revert_tper(struct opal_dev *dev) | |
1376 | { | |
1377 | int err = 0; | |
1378 | ||
1379 | clear_opal_cmd(dev); | |
1380 | set_comid(dev, dev->comid); | |
1381 | ||
1382 | add_token_u8(&err, dev, OPAL_CALL); | |
1383 | add_token_bytestring(&err, dev, opaluid[OPAL_ADMINSP_UID], | |
1384 | OPAL_UID_LENGTH); | |
1385 | add_token_bytestring(&err, dev, opalmethod[OPAL_REVERT], | |
1386 | OPAL_UID_LENGTH); | |
1387 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1388 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1389 | if (err) { | |
1390 | pr_err("Error building REVERT TPER command.\n"); | |
1391 | return err; | |
1392 | } | |
1393 | ||
1394 | return finalize_and_send(dev, parse_and_check_status); | |
1395 | } | |
1396 | ||
1397 | static int internal_activate_user(struct opal_dev *dev) | |
1398 | { | |
1399 | struct opal_session_info *session = dev->func_data[dev->state]; | |
1400 | u8 uid[OPAL_UID_LENGTH]; | |
1401 | int err = 0; | |
1402 | ||
1403 | clear_opal_cmd(dev); | |
1404 | set_comid(dev, dev->comid); | |
1405 | ||
1406 | memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1407 | uid[7] = session->who; | |
1408 | ||
1409 | add_token_u8(&err, dev, OPAL_CALL); | |
1410 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1411 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH); | |
1412 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1413 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1414 | add_token_u8(&err, dev, OPAL_VALUES); | |
1415 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1416 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1417 | add_token_u8(&err, dev, 5); /* Enabled */ | |
1418 | add_token_u8(&err, dev, OPAL_TRUE); | |
1419 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1420 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1421 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1422 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1423 | ||
1424 | if (err) { | |
1425 | pr_err("Error building Activate UserN command.\n"); | |
1426 | return err; | |
1427 | } | |
1428 | ||
1429 | return finalize_and_send(dev, parse_and_check_status); | |
1430 | } | |
1431 | ||
1432 | static int erase_locking_range(struct opal_dev *dev) | |
1433 | { | |
1434 | struct opal_session_info *session; | |
1435 | u8 uid[OPAL_UID_LENGTH]; | |
1436 | int err = 0; | |
1437 | ||
1438 | clear_opal_cmd(dev); | |
1439 | set_comid(dev, dev->comid); | |
1440 | session = dev->func_data[dev->state]; | |
1441 | ||
1442 | if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0) | |
1443 | return -ERANGE; | |
1444 | ||
1445 | add_token_u8(&err, dev, OPAL_CALL); | |
1446 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1447 | add_token_bytestring(&err, dev, opalmethod[OPAL_ERASE], | |
1448 | OPAL_UID_LENGTH); | |
1449 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1450 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1451 | ||
1452 | if (err) { | |
1453 | pr_err("Error building Erase Locking Range Command.\n"); | |
1454 | return err; | |
1455 | } | |
1456 | return finalize_and_send(dev, parse_and_check_status); | |
1457 | } | |
1458 | ||
1459 | static int set_mbr_done(struct opal_dev *dev) | |
1460 | { | |
1461 | u8 mbr_done_tf = *(u8 *)dev->func_data[dev->state]; | |
1462 | int err = 0; | |
1463 | ||
1464 | clear_opal_cmd(dev); | |
1465 | set_comid(dev, dev->comid); | |
1466 | ||
1467 | add_token_u8(&err, dev, OPAL_CALL); | |
1468 | add_token_bytestring(&err, dev, opaluid[OPAL_MBRCONTROL], | |
1469 | OPAL_UID_LENGTH); | |
1470 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH); | |
1471 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1472 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1473 | add_token_u8(&err, dev, OPAL_VALUES); | |
1474 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1475 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1476 | add_token_u8(&err, dev, 2); /* Done */ | |
1477 | add_token_u8(&err, dev, mbr_done_tf); /* Done T or F */ | |
1478 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1479 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1480 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1481 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1482 | ||
1483 | if (err) { | |
1484 | pr_err("Error Building set MBR Done command\n"); | |
1485 | return err; | |
1486 | } | |
1487 | ||
1488 | return finalize_and_send(dev, parse_and_check_status); | |
1489 | } | |
1490 | ||
1491 | static int set_mbr_enable_disable(struct opal_dev *dev) | |
1492 | { | |
1493 | u8 mbr_en_dis = *(u8 *)dev->func_data[dev->state]; | |
1494 | int err = 0; | |
1495 | ||
1496 | clear_opal_cmd(dev); | |
1497 | set_comid(dev, dev->comid); | |
1498 | ||
1499 | add_token_u8(&err, dev, OPAL_CALL); | |
1500 | add_token_bytestring(&err, dev, opaluid[OPAL_MBRCONTROL], | |
1501 | OPAL_UID_LENGTH); | |
1502 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH); | |
1503 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1504 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1505 | add_token_u8(&err, dev, OPAL_VALUES); | |
1506 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1507 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1508 | add_token_u8(&err, dev, 1); | |
1509 | add_token_u8(&err, dev, mbr_en_dis); | |
1510 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1511 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1512 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1513 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1514 | ||
1515 | if (err) { | |
1516 | pr_err("Error Building set MBR done command\n"); | |
1517 | return err; | |
1518 | } | |
1519 | ||
1520 | return finalize_and_send(dev, parse_and_check_status); | |
1521 | } | |
1522 | ||
1523 | static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid, | |
1524 | struct opal_dev *dev) | |
1525 | { | |
1526 | int err = 0; | |
1527 | ||
1528 | clear_opal_cmd(dev); | |
1529 | set_comid(dev, dev->comid); | |
1530 | ||
1531 | add_token_u8(&err, dev, OPAL_CALL); | |
1532 | add_token_bytestring(&err, dev, cpin_uid, OPAL_UID_LENGTH); | |
1533 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], | |
1534 | OPAL_UID_LENGTH); | |
1535 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1536 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1537 | add_token_u8(&err, dev, OPAL_VALUES); | |
1538 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1539 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1540 | add_token_u8(&err, dev, 3); /* PIN */ | |
1541 | add_token_bytestring(&err, dev, key, key_len); | |
1542 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1543 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1544 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1545 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1546 | ||
1547 | return err; | |
1548 | } | |
1549 | ||
1550 | static int set_new_pw(struct opal_dev *dev) | |
1551 | { | |
1552 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
1553 | struct opal_session_info *usr = dev->func_data[dev->state]; | |
1554 | ||
1555 | ||
1556 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH); | |
1557 | ||
1558 | if (usr->who != OPAL_ADMIN1) { | |
1559 | cpin_uid[5] = 0x03; | |
1560 | if (usr->sum) | |
1561 | cpin_uid[7] = usr->opal_key.lr + 1; | |
1562 | else | |
1563 | cpin_uid[7] = usr->who; | |
1564 | } | |
1565 | ||
1566 | if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len, | |
1567 | cpin_uid, dev)) { | |
1568 | pr_err("Error building set password command.\n"); | |
1569 | return -ERANGE; | |
1570 | } | |
1571 | ||
1572 | return finalize_and_send(dev, parse_and_check_status); | |
1573 | } | |
1574 | ||
1575 | static int set_sid_cpin_pin(struct opal_dev *dev) | |
1576 | { | |
1577 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
1578 | struct opal_key *key = dev->func_data[dev->state]; | |
1579 | ||
1580 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH); | |
1581 | ||
1582 | if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) { | |
1583 | pr_err("Error building Set SID cpin\n"); | |
1584 | return -ERANGE; | |
1585 | } | |
1586 | return finalize_and_send(dev, parse_and_check_status); | |
1587 | } | |
1588 | ||
1589 | static int add_user_to_lr(struct opal_dev *dev) | |
1590 | { | |
1591 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1592 | u8 user_uid[OPAL_UID_LENGTH]; | |
1593 | struct opal_lock_unlock *lkul; | |
1594 | int err = 0; | |
1595 | ||
1596 | clear_opal_cmd(dev); | |
1597 | set_comid(dev, dev->comid); | |
1598 | ||
1599 | lkul = dev->func_data[dev->state]; | |
1600 | ||
1601 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED], | |
1602 | OPAL_UID_LENGTH); | |
1603 | ||
1604 | if (lkul->l_state == OPAL_RW) | |
1605 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED], | |
1606 | OPAL_UID_LENGTH); | |
1607 | ||
1608 | lr_buffer[7] = lkul->session.opal_key.lr; | |
1609 | ||
1610 | memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1611 | ||
1612 | user_uid[7] = lkul->session.who; | |
1613 | ||
1614 | add_token_u8(&err, dev, OPAL_CALL); | |
1615 | add_token_bytestring(&err, dev, lr_buffer, OPAL_UID_LENGTH); | |
1616 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], | |
1617 | OPAL_UID_LENGTH); | |
1618 | ||
1619 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1620 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1621 | add_token_u8(&err, dev, OPAL_VALUES); | |
1622 | ||
1623 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1624 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1625 | add_token_u8(&err, dev, 3); | |
1626 | ||
1627 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1628 | ||
1629 | ||
1630 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1631 | add_token_bytestring(&err, dev, | |
1632 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1633 | OPAL_UID_LENGTH/2); | |
1634 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1635 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1636 | ||
1637 | ||
1638 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1639 | add_token_bytestring(&err, dev, | |
1640 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1641 | OPAL_UID_LENGTH/2); | |
1642 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1643 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1644 | ||
1645 | ||
1646 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1647 | add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE], | |
1648 | OPAL_UID_LENGTH/2); | |
1649 | add_token_u8(&err, dev, 1); | |
1650 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1651 | ||
1652 | ||
1653 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1654 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1655 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1656 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1657 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1658 | ||
1659 | if (err) { | |
1660 | pr_err("Error building add user to locking range command.\n"); | |
1661 | return err; | |
1662 | } | |
1663 | ||
1664 | return finalize_and_send(dev, parse_and_check_status); | |
1665 | } | |
1666 | ||
1667 | static int lock_unlock_locking_range(struct opal_dev *dev) | |
1668 | { | |
1669 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1670 | const u8 *method; | |
1671 | struct opal_lock_unlock *lkul; | |
1672 | u8 read_locked = 1, write_locked = 1; | |
1673 | int err = 0; | |
1674 | ||
1675 | clear_opal_cmd(dev); | |
1676 | set_comid(dev, dev->comid); | |
1677 | ||
1678 | method = opalmethod[OPAL_SET]; | |
1679 | lkul = dev->func_data[dev->state]; | |
1680 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), | |
1681 | lkul->session.opal_key.lr) < 0) | |
1682 | return -ERANGE; | |
1683 | ||
1684 | switch (lkul->l_state) { | |
1685 | case OPAL_RO: | |
1686 | read_locked = 0; | |
1687 | write_locked = 1; | |
1688 | break; | |
1689 | case OPAL_RW: | |
1690 | read_locked = 0; | |
1691 | write_locked = 0; | |
1692 | break; | |
1693 | case OPAL_LK: | |
1694 | /* vars are initalized to locked */ | |
1695 | break; | |
1696 | default: | |
1697 | pr_err("Tried to set an invalid locking state... returning to uland\n"); | |
1698 | return OPAL_INVAL_PARAM; | |
1699 | } | |
1700 | ||
1701 | add_token_u8(&err, dev, OPAL_CALL); | |
1702 | add_token_bytestring(&err, dev, lr_buffer, OPAL_UID_LENGTH); | |
1703 | add_token_bytestring(&err, dev, opalmethod[OPAL_SET], OPAL_UID_LENGTH); | |
1704 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1705 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1706 | add_token_u8(&err, dev, OPAL_VALUES); | |
1707 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1708 | ||
1709 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1710 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1711 | add_token_u8(&err, dev, read_locked); | |
1712 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1713 | ||
1714 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1715 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1716 | add_token_u8(&err, dev, write_locked); | |
1717 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1718 | ||
1719 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1720 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1721 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1722 | ||
1723 | if (err) { | |
1724 | pr_err("Error building SET command.\n"); | |
1725 | return err; | |
1726 | } | |
1727 | return finalize_and_send(dev, parse_and_check_status); | |
1728 | } | |
1729 | ||
1730 | ||
1731 | static int lock_unlock_locking_range_sum(struct opal_dev *dev) | |
1732 | { | |
1733 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1734 | u8 read_locked = 1, write_locked = 1; | |
1735 | const u8 *method; | |
1736 | struct opal_lock_unlock *lkul; | |
1737 | int ret; | |
1738 | ||
1739 | clear_opal_cmd(dev); | |
1740 | set_comid(dev, dev->comid); | |
1741 | ||
1742 | method = opalmethod[OPAL_SET]; | |
1743 | lkul = dev->func_data[dev->state]; | |
1744 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), | |
1745 | lkul->session.opal_key.lr) < 0) | |
1746 | return -ERANGE; | |
1747 | ||
1748 | switch (lkul->l_state) { | |
1749 | case OPAL_RO: | |
1750 | read_locked = 0; | |
1751 | write_locked = 1; | |
1752 | break; | |
1753 | case OPAL_RW: | |
1754 | read_locked = 0; | |
1755 | write_locked = 0; | |
1756 | break; | |
1757 | case OPAL_LK: | |
1758 | /* vars are initalized to locked */ | |
1759 | break; | |
1760 | default: | |
1761 | pr_err("Tried to set an invalid locking state.\n"); | |
1762 | return OPAL_INVAL_PARAM; | |
1763 | } | |
1764 | ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1, | |
1765 | read_locked, write_locked); | |
1766 | ||
1767 | if (ret < 0) { | |
1768 | pr_err("Error building SET command.\n"); | |
1769 | return ret; | |
1770 | } | |
1771 | return finalize_and_send(dev, parse_and_check_status); | |
1772 | } | |
1773 | ||
1774 | static int activate_lsp(struct opal_dev *dev) | |
1775 | { | |
1776 | struct opal_lr_act *opal_act; | |
1777 | u8 user_lr[OPAL_UID_LENGTH]; | |
1778 | u8 uint_3 = 0x83; | |
1779 | int err = 0, i; | |
1780 | ||
1781 | clear_opal_cmd(dev); | |
1782 | set_comid(dev, dev->comid); | |
1783 | ||
1784 | opal_act = dev->func_data[dev->state]; | |
1785 | ||
1786 | add_token_u8(&err, dev, OPAL_CALL); | |
1787 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], | |
1788 | OPAL_UID_LENGTH); | |
1789 | add_token_bytestring(&err, dev, opalmethod[OPAL_ACTIVATE], | |
1790 | OPAL_UID_LENGTH); | |
1791 | ||
1792 | ||
1793 | if (opal_act->sum) { | |
1794 | err = build_locking_range(user_lr, sizeof(user_lr), | |
1795 | opal_act->lr[0]); | |
1796 | if (err) | |
1797 | return err; | |
1798 | ||
1799 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1800 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1801 | add_token_u8(&err, dev, uint_3); | |
1802 | add_token_u8(&err, dev, 6); | |
1803 | add_token_u8(&err, dev, 0); | |
1804 | add_token_u8(&err, dev, 0); | |
1805 | ||
1806 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1807 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1808 | for (i = 1; i < opal_act->num_lrs; i++) { | |
1809 | user_lr[7] = opal_act->lr[i]; | |
1810 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1811 | } | |
1812 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1813 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1814 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1815 | ||
1816 | } else { | |
1817 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1818 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1819 | } | |
1820 | ||
1821 | if (err) { | |
1822 | pr_err("Error building Activate LockingSP command.\n"); | |
1823 | return err; | |
1824 | } | |
1825 | ||
1826 | return finalize_and_send(dev, parse_and_check_status); | |
1827 | } | |
1828 | ||
1829 | static int get_lsp_lifecycle_cont(struct opal_dev *dev) | |
1830 | { | |
1831 | u8 lc_status; | |
1832 | int error = 0; | |
1833 | ||
1834 | error = parse_and_check_status(dev); | |
1835 | if (error) | |
1836 | return error; | |
1837 | ||
1838 | lc_status = response_get_u64(&dev->parsed, 4); | |
1839 | /* 0x08 is Manufacured Inactive */ | |
1840 | /* 0x09 is Manufactured */ | |
1841 | if (lc_status != OPAL_MANUFACTURED_INACTIVE) { | |
1842 | pr_err("Couldn't determine the status of the Lifcycle state\n"); | |
1843 | return -ENODEV; | |
1844 | } | |
1845 | ||
1846 | return 0; | |
1847 | } | |
1848 | ||
1849 | /* Determine if we're in the Manufactured Inactive or Active state */ | |
1850 | static int get_lsp_lifecycle(struct opal_dev *dev) | |
1851 | { | |
1852 | int err = 0; | |
1853 | ||
1854 | clear_opal_cmd(dev); | |
1855 | set_comid(dev, dev->comid); | |
1856 | ||
1857 | add_token_u8(&err, dev, OPAL_CALL); | |
1858 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], | |
1859 | OPAL_UID_LENGTH); | |
1860 | add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH); | |
1861 | ||
1862 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1863 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1864 | ||
1865 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1866 | add_token_u8(&err, dev, 3); /* Start Column */ | |
1867 | add_token_u8(&err, dev, 6); /* Lifecycle Column */ | |
1868 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1869 | ||
1870 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1871 | add_token_u8(&err, dev, 4); /* End Column */ | |
1872 | add_token_u8(&err, dev, 6); /* Lifecycle Column */ | |
1873 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1874 | ||
1875 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1876 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1877 | ||
1878 | if (err) { | |
1879 | pr_err("Error Building GET Lifecycle Status command\n"); | |
1880 | return err; | |
1881 | } | |
1882 | ||
1883 | return finalize_and_send(dev, get_lsp_lifecycle_cont); | |
1884 | } | |
1885 | ||
1886 | static int get_msid_cpin_pin_cont(struct opal_dev *dev) | |
1887 | { | |
1888 | const char *msid_pin; | |
1889 | size_t strlen; | |
1890 | int error = 0; | |
1891 | ||
1892 | error = parse_and_check_status(dev); | |
1893 | if (error) | |
1894 | return error; | |
1895 | ||
1896 | strlen = response_get_string(&dev->parsed, 4, &msid_pin); | |
1897 | if (!msid_pin) { | |
1898 | pr_err("%s: Couldn't extract PIN from response\n", __func__); | |
1899 | return OPAL_INVAL_PARAM; | |
1900 | } | |
1901 | ||
1902 | dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL); | |
1903 | if (!dev->prev_data) | |
1904 | return -ENOMEM; | |
1905 | ||
1906 | dev->prev_d_len = strlen; | |
1907 | ||
1908 | return 0; | |
1909 | } | |
1910 | ||
1911 | static int get_msid_cpin_pin(struct opal_dev *dev) | |
1912 | { | |
1913 | int err = 0; | |
1914 | ||
1915 | clear_opal_cmd(dev); | |
1916 | set_comid(dev, dev->comid); | |
1917 | ||
1918 | ||
1919 | add_token_u8(&err, dev, OPAL_CALL); | |
1920 | add_token_bytestring(&err, dev, opaluid[OPAL_C_PIN_MSID], | |
1921 | OPAL_UID_LENGTH); | |
1922 | add_token_bytestring(&err, dev, opalmethod[OPAL_GET], OPAL_UID_LENGTH); | |
1923 | ||
1924 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1925 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1926 | ||
1927 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1928 | add_token_u8(&err, dev, 3); /* Start Column */ | |
1929 | add_token_u8(&err, dev, 3); /* PIN */ | |
1930 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1931 | ||
1932 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1933 | add_token_u8(&err, dev, 4); /* End Column */ | |
1934 | add_token_u8(&err, dev, 3); /* Lifecycle Column */ | |
1935 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1936 | ||
1937 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1938 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1939 | ||
1940 | if (err) { | |
1941 | pr_err("Error building Get MSID CPIN PIN command.\n"); | |
1942 | return err; | |
1943 | } | |
1944 | ||
1945 | return finalize_and_send(dev, get_msid_cpin_pin_cont); | |
1946 | } | |
1947 | ||
1948 | static int build_end_opal_session(struct opal_dev *dev) | |
1949 | { | |
1950 | int err = 0; | |
1951 | ||
1952 | clear_opal_cmd(dev); | |
1953 | ||
1954 | set_comid(dev, dev->comid); | |
1955 | add_token_u8(&err, dev, OPAL_ENDOFSESSION); | |
1956 | return err; | |
1957 | } | |
1958 | ||
1959 | static int end_opal_session(struct opal_dev *dev) | |
1960 | { | |
1961 | int ret = build_end_opal_session(dev); | |
1962 | ||
1963 | if (ret < 0) | |
1964 | return ret; | |
1965 | return finalize_and_send(dev, end_session_cont); | |
1966 | } | |
1967 | ||
1968 | static int end_opal_session_error(struct opal_dev *dev) | |
1969 | { | |
1970 | const opal_step error_end_session[] = { | |
1971 | end_opal_session, | |
1972 | NULL, | |
1973 | }; | |
1974 | dev->funcs = error_end_session; | |
1975 | dev->state = 0; | |
1976 | return next(dev); | |
1977 | } | |
1978 | ||
1979 | static inline void setup_opal_dev(struct opal_dev *dev, | |
1980 | const opal_step *funcs) | |
1981 | { | |
1982 | dev->state = 0; | |
1983 | dev->funcs = funcs; | |
1984 | dev->tsn = 0; | |
1985 | dev->hsn = 0; | |
1986 | dev->func_data = NULL; | |
1987 | dev->prev_data = NULL; | |
1988 | } | |
1989 | ||
1990 | static int check_opal_support(struct opal_dev *dev) | |
1991 | { | |
1992 | static const opal_step funcs[] = { | |
1993 | opal_discovery0, | |
1994 | NULL | |
1995 | }; | |
1996 | int ret; | |
1997 | ||
1998 | mutex_lock(&dev->dev_lock); | |
1999 | setup_opal_dev(dev, funcs); | |
2000 | ret = next(dev); | |
2001 | dev->supported = !ret; | |
2002 | mutex_unlock(&dev->dev_lock); | |
2003 | return ret; | |
2004 | } | |
2005 | ||
4f1244c8 | 2006 | struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv) |
455a7b23 | 2007 | { |
4f1244c8 CH |
2008 | struct opal_dev *dev; |
2009 | ||
2010 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
2011 | if (!dev) | |
2012 | return NULL; | |
2013 | ||
2014 | INIT_LIST_HEAD(&dev->unlk_lst); | |
2015 | mutex_init(&dev->dev_lock); | |
2016 | dev->data = data; | |
2017 | dev->send_recv = send_recv; | |
2018 | if (check_opal_support(dev) != 0) { | |
f5b37b7c | 2019 | pr_debug("Opal is not supported on this device\n"); |
4f1244c8 CH |
2020 | kfree(dev); |
2021 | return NULL; | |
2022 | } | |
2023 | return dev; | |
455a7b23 SB |
2024 | } |
2025 | EXPORT_SYMBOL(init_opal_dev); | |
2026 | ||
2027 | static int opal_secure_erase_locking_range(struct opal_dev *dev, | |
2028 | struct opal_session_info *opal_session) | |
2029 | { | |
2030 | void *data[3] = { NULL }; | |
2031 | static const opal_step erase_funcs[] = { | |
2032 | opal_discovery0, | |
2033 | start_auth_opal_session, | |
2034 | get_active_key, | |
2035 | gen_key, | |
2036 | end_opal_session, | |
2037 | NULL, | |
2038 | }; | |
2039 | int ret; | |
2040 | ||
2041 | mutex_lock(&dev->dev_lock); | |
2042 | setup_opal_dev(dev, erase_funcs); | |
2043 | ||
2044 | dev->func_data = data; | |
2045 | dev->func_data[1] = opal_session; | |
2046 | dev->func_data[2] = &opal_session->opal_key.lr; | |
2047 | ||
2048 | ret = next(dev); | |
2049 | mutex_unlock(&dev->dev_lock); | |
2050 | return ret; | |
2051 | } | |
2052 | ||
2053 | static int opal_erase_locking_range(struct opal_dev *dev, | |
2054 | struct opal_session_info *opal_session) | |
2055 | { | |
2056 | void *data[3] = { NULL }; | |
2057 | static const opal_step erase_funcs[] = { | |
2058 | opal_discovery0, | |
2059 | start_auth_opal_session, | |
2060 | erase_locking_range, | |
2061 | end_opal_session, | |
2062 | NULL, | |
2063 | }; | |
2064 | int ret; | |
2065 | ||
2066 | mutex_lock(&dev->dev_lock); | |
2067 | setup_opal_dev(dev, erase_funcs); | |
2068 | ||
2069 | dev->func_data = data; | |
2070 | dev->func_data[1] = opal_session; | |
2071 | dev->func_data[2] = opal_session; | |
2072 | ||
2073 | ret = next(dev); | |
2074 | mutex_unlock(&dev->dev_lock); | |
2075 | return ret; | |
2076 | } | |
2077 | ||
2078 | static int opal_enable_disable_shadow_mbr(struct opal_dev *dev, | |
2079 | struct opal_mbr_data *opal_mbr) | |
2080 | { | |
2081 | void *func_data[6] = { NULL }; | |
2082 | static const opal_step mbr_funcs[] = { | |
2083 | opal_discovery0, | |
2084 | start_admin1LSP_opal_session, | |
2085 | set_mbr_done, | |
2086 | end_opal_session, | |
2087 | start_admin1LSP_opal_session, | |
2088 | set_mbr_enable_disable, | |
2089 | end_opal_session, | |
2090 | NULL, | |
2091 | }; | |
2092 | int ret; | |
2093 | ||
2094 | if (opal_mbr->enable_disable != OPAL_MBR_ENABLE && | |
2095 | opal_mbr->enable_disable != OPAL_MBR_DISABLE) | |
2096 | return -EINVAL; | |
2097 | ||
2098 | mutex_lock(&dev->dev_lock); | |
2099 | setup_opal_dev(dev, mbr_funcs); | |
2100 | dev->func_data = func_data; | |
2101 | dev->func_data[1] = &opal_mbr->key; | |
2102 | dev->func_data[2] = &opal_mbr->enable_disable; | |
2103 | dev->func_data[4] = &opal_mbr->key; | |
2104 | dev->func_data[5] = &opal_mbr->enable_disable; | |
2105 | ret = next(dev); | |
2106 | mutex_unlock(&dev->dev_lock); | |
2107 | return ret; | |
2108 | } | |
2109 | ||
2110 | static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) | |
2111 | { | |
2112 | struct opal_suspend_data *suspend; | |
2113 | ||
2114 | suspend = kzalloc(sizeof(*suspend), GFP_KERNEL); | |
2115 | if (!suspend) | |
2116 | return -ENOMEM; | |
2117 | ||
2118 | suspend->unlk = *lk_unlk; | |
2119 | suspend->lr = lk_unlk->session.opal_key.lr; | |
2120 | ||
2121 | mutex_lock(&dev->dev_lock); | |
2122 | setup_opal_dev(dev, NULL); | |
2123 | add_suspend_info(dev, suspend); | |
2124 | mutex_unlock(&dev->dev_lock); | |
2125 | return 0; | |
2126 | } | |
2127 | ||
2128 | static int opal_add_user_to_lr(struct opal_dev *dev, | |
2129 | struct opal_lock_unlock *lk_unlk) | |
2130 | { | |
2131 | void *func_data[3] = { NULL }; | |
2132 | static const opal_step funcs[] = { | |
2133 | opal_discovery0, | |
2134 | start_admin1LSP_opal_session, | |
2135 | add_user_to_lr, | |
2136 | end_opal_session, | |
2137 | NULL | |
2138 | }; | |
2139 | int ret; | |
2140 | ||
2141 | if (lk_unlk->l_state != OPAL_RO && | |
2142 | lk_unlk->l_state != OPAL_RW) { | |
2143 | pr_err("Locking state was not RO or RW\n"); | |
2144 | return -EINVAL; | |
2145 | } | |
2146 | if (lk_unlk->session.who < OPAL_USER1 && | |
2147 | lk_unlk->session.who > OPAL_USER9) { | |
2148 | pr_err("Authority was not within the range of users: %d\n", | |
2149 | lk_unlk->session.who); | |
2150 | return -EINVAL; | |
2151 | } | |
2152 | if (lk_unlk->session.sum) { | |
2153 | pr_err("%s not supported in sum. Use setup locking range\n", | |
2154 | __func__); | |
2155 | return -EINVAL; | |
2156 | } | |
2157 | ||
2158 | mutex_lock(&dev->dev_lock); | |
2159 | setup_opal_dev(dev, funcs); | |
2160 | dev->func_data = func_data; | |
2161 | dev->func_data[1] = &lk_unlk->session.opal_key; | |
2162 | dev->func_data[2] = lk_unlk; | |
2163 | ret = next(dev); | |
2164 | mutex_unlock(&dev->dev_lock); | |
2165 | return ret; | |
2166 | } | |
2167 | ||
2168 | static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal) | |
2169 | { | |
2170 | void *data[2] = { NULL }; | |
2171 | static const opal_step revert_funcs[] = { | |
2172 | opal_discovery0, | |
2173 | start_SIDASP_opal_session, | |
2174 | revert_tper, /* controller will terminate session */ | |
2175 | NULL, | |
2176 | }; | |
2177 | int ret; | |
2178 | ||
2179 | mutex_lock(&dev->dev_lock); | |
2180 | setup_opal_dev(dev, revert_funcs); | |
2181 | dev->func_data = data; | |
2182 | dev->func_data[1] = opal; | |
2183 | ret = next(dev); | |
2184 | mutex_unlock(&dev->dev_lock); | |
2185 | return ret; | |
2186 | } | |
2187 | ||
2188 | static int __opal_lock_unlock_sum(struct opal_dev *dev) | |
2189 | { | |
2190 | static const opal_step ulk_funcs_sum[] = { | |
2191 | opal_discovery0, | |
2192 | start_auth_opal_session, | |
2193 | lock_unlock_locking_range_sum, | |
2194 | end_opal_session, | |
2195 | NULL | |
2196 | }; | |
2197 | ||
2198 | dev->funcs = ulk_funcs_sum; | |
2199 | return next(dev); | |
2200 | } | |
2201 | ||
2202 | static int __opal_lock_unlock(struct opal_dev *dev) | |
2203 | { | |
2204 | static const opal_step _unlock_funcs[] = { | |
2205 | opal_discovery0, | |
2206 | start_auth_opal_session, | |
2207 | lock_unlock_locking_range, | |
2208 | end_opal_session, | |
2209 | NULL | |
2210 | }; | |
2211 | ||
2212 | dev->funcs = _unlock_funcs; | |
2213 | return next(dev); | |
2214 | } | |
2215 | ||
2216 | static int opal_lock_unlock(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) | |
2217 | { | |
2218 | void *func_data[3] = { NULL }; | |
2219 | int ret; | |
2220 | ||
2221 | if (lk_unlk->session.who < OPAL_ADMIN1 || | |
2222 | lk_unlk->session.who > OPAL_USER9) | |
2223 | return -EINVAL; | |
2224 | ||
2225 | mutex_lock(&dev->dev_lock); | |
2226 | setup_opal_dev(dev, NULL); | |
2227 | dev->func_data = func_data; | |
2228 | dev->func_data[1] = &lk_unlk->session; | |
2229 | dev->func_data[2] = lk_unlk; | |
2230 | ||
2231 | if (lk_unlk->session.sum) | |
2232 | ret = __opal_lock_unlock_sum(dev); | |
2233 | else | |
2234 | ret = __opal_lock_unlock(dev); | |
2235 | ||
2236 | mutex_unlock(&dev->dev_lock); | |
2237 | return ret; | |
2238 | } | |
2239 | ||
2240 | static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal) | |
2241 | { | |
2242 | static const opal_step owner_funcs[] = { | |
2243 | opal_discovery0, | |
2244 | start_anybodyASP_opal_session, | |
2245 | get_msid_cpin_pin, | |
2246 | end_opal_session, | |
2247 | start_SIDASP_opal_session, | |
2248 | set_sid_cpin_pin, | |
2249 | end_opal_session, | |
2250 | NULL | |
2251 | }; | |
2252 | void *data[6] = { NULL }; | |
2253 | int ret; | |
2254 | ||
2255 | if (!dev) | |
2256 | return -ENODEV; | |
2257 | ||
2258 | mutex_lock(&dev->dev_lock); | |
2259 | setup_opal_dev(dev, owner_funcs); | |
2260 | dev->func_data = data; | |
2261 | dev->func_data[4] = opal; | |
2262 | dev->func_data[5] = opal; | |
2263 | ret = next(dev); | |
2264 | mutex_unlock(&dev->dev_lock); | |
2265 | return ret; | |
2266 | } | |
2267 | ||
2268 | static int opal_activate_lsp(struct opal_dev *dev, struct opal_lr_act *opal_lr_act) | |
2269 | { | |
2270 | void *data[4] = { NULL }; | |
2271 | static const opal_step active_funcs[] = { | |
2272 | opal_discovery0, | |
2273 | start_SIDASP_opal_session, /* Open session as SID auth */ | |
2274 | get_lsp_lifecycle, | |
2275 | activate_lsp, | |
2276 | end_opal_session, | |
2277 | NULL | |
2278 | }; | |
2279 | int ret; | |
2280 | ||
2281 | if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS) | |
2282 | return -EINVAL; | |
2283 | ||
2284 | mutex_lock(&dev->dev_lock); | |
2285 | setup_opal_dev(dev, active_funcs); | |
2286 | dev->func_data = data; | |
2287 | dev->func_data[1] = &opal_lr_act->key; | |
2288 | dev->func_data[3] = opal_lr_act; | |
2289 | ret = next(dev); | |
2290 | mutex_unlock(&dev->dev_lock); | |
2291 | return ret; | |
2292 | } | |
2293 | ||
2294 | static int opal_setup_locking_range(struct opal_dev *dev, | |
2295 | struct opal_user_lr_setup *opal_lrs) | |
2296 | { | |
2297 | void *data[3] = { NULL }; | |
2298 | static const opal_step lr_funcs[] = { | |
2299 | opal_discovery0, | |
2300 | start_auth_opal_session, | |
2301 | setup_locking_range, | |
2302 | end_opal_session, | |
2303 | NULL, | |
2304 | }; | |
2305 | int ret; | |
2306 | ||
2307 | mutex_lock(&dev->dev_lock); | |
2308 | setup_opal_dev(dev, lr_funcs); | |
2309 | dev->func_data = data; | |
2310 | dev->func_data[1] = &opal_lrs->session; | |
2311 | dev->func_data[2] = opal_lrs; | |
2312 | ret = next(dev); | |
2313 | mutex_unlock(&dev->dev_lock); | |
2314 | return ret; | |
2315 | } | |
2316 | ||
2317 | static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw) | |
2318 | { | |
2319 | static const opal_step pw_funcs[] = { | |
2320 | opal_discovery0, | |
2321 | start_auth_opal_session, | |
2322 | set_new_pw, | |
2323 | end_opal_session, | |
2324 | NULL | |
2325 | }; | |
2326 | void *data[3] = { NULL }; | |
2327 | int ret; | |
2328 | ||
2329 | if (opal_pw->session.who < OPAL_ADMIN1 || | |
2330 | opal_pw->session.who > OPAL_USER9 || | |
2331 | opal_pw->new_user_pw.who < OPAL_ADMIN1 || | |
2332 | opal_pw->new_user_pw.who > OPAL_USER9) | |
2333 | return -EINVAL; | |
2334 | ||
2335 | mutex_lock(&dev->dev_lock); | |
2336 | setup_opal_dev(dev, pw_funcs); | |
2337 | dev->func_data = data; | |
2338 | dev->func_data[1] = (void *) &opal_pw->session; | |
2339 | dev->func_data[2] = (void *) &opal_pw->new_user_pw; | |
2340 | ||
2341 | ret = next(dev); | |
2342 | mutex_unlock(&dev->dev_lock); | |
2343 | return ret; | |
2344 | } | |
2345 | ||
2346 | static int opal_activate_user(struct opal_dev *dev, | |
2347 | struct opal_session_info *opal_session) | |
2348 | { | |
2349 | static const opal_step act_funcs[] = { | |
2350 | opal_discovery0, | |
2351 | start_admin1LSP_opal_session, | |
2352 | internal_activate_user, | |
2353 | end_opal_session, | |
2354 | NULL | |
2355 | }; | |
2356 | void *data[3] = { NULL }; | |
2357 | int ret; | |
2358 | ||
2359 | /* We can't activate Admin1 it's active as manufactured */ | |
2360 | if (opal_session->who < OPAL_USER1 && | |
2361 | opal_session->who > OPAL_USER9) { | |
2362 | pr_err("Who was not a valid user: %d\n", opal_session->who); | |
2363 | return -EINVAL; | |
2364 | } | |
2365 | ||
2366 | mutex_lock(&dev->dev_lock); | |
2367 | setup_opal_dev(dev, act_funcs); | |
2368 | dev->func_data = data; | |
2369 | dev->func_data[1] = &opal_session->opal_key; | |
2370 | dev->func_data[2] = opal_session; | |
2371 | ret = next(dev); | |
2372 | mutex_unlock(&dev->dev_lock); | |
2373 | return ret; | |
2374 | } | |
2375 | ||
2376 | bool opal_unlock_from_suspend(struct opal_dev *dev) | |
2377 | { | |
2378 | struct opal_suspend_data *suspend; | |
2379 | void *func_data[3] = { NULL }; | |
2380 | bool was_failure = false; | |
2381 | int ret = 0; | |
2382 | ||
2383 | if (!dev) | |
2384 | return false; | |
2385 | if (!dev->supported) | |
2386 | return false; | |
2387 | ||
2388 | mutex_lock(&dev->dev_lock); | |
2389 | setup_opal_dev(dev, NULL); | |
2390 | dev->func_data = func_data; | |
2391 | ||
2392 | list_for_each_entry(suspend, &dev->unlk_lst, node) { | |
2393 | dev->state = 0; | |
2394 | dev->func_data[1] = &suspend->unlk.session; | |
2395 | dev->func_data[2] = &suspend->unlk; | |
2396 | dev->tsn = 0; | |
2397 | dev->hsn = 0; | |
2398 | ||
2399 | if (suspend->unlk.session.sum) | |
2400 | ret = __opal_lock_unlock_sum(dev); | |
2401 | else | |
2402 | ret = __opal_lock_unlock(dev); | |
2403 | if (ret) { | |
2404 | pr_warn("Failed to unlock LR %hhu with sum %d\n", | |
2405 | suspend->unlk.session.opal_key.lr, | |
2406 | suspend->unlk.session.sum); | |
2407 | was_failure = true; | |
2408 | } | |
2409 | } | |
2410 | mutex_unlock(&dev->dev_lock); | |
2411 | return was_failure; | |
2412 | } | |
2413 | EXPORT_SYMBOL(opal_unlock_from_suspend); | |
2414 | ||
e225c20e | 2415 | int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) |
455a7b23 | 2416 | { |
e225c20e SB |
2417 | void *p; |
2418 | int ret = -ENOTTY; | |
455a7b23 SB |
2419 | |
2420 | if (!capable(CAP_SYS_ADMIN)) | |
2421 | return -EACCES; | |
4f1244c8 CH |
2422 | if (!dev) |
2423 | return -ENOTSUPP; | |
455a7b23 SB |
2424 | if (!dev->supported) { |
2425 | pr_err("Not supported\n"); | |
2426 | return -ENOTSUPP; | |
2427 | } | |
2428 | ||
e225c20e SB |
2429 | p = memdup_user(arg, _IOC_SIZE(cmd)); |
2430 | if (IS_ERR(p)) | |
2431 | return PTR_ERR(p); | |
455a7b23 | 2432 | |
e225c20e SB |
2433 | switch (cmd) { |
2434 | case IOC_OPAL_SAVE: | |
2435 | ret = opal_save(dev, p); | |
2436 | break; | |
2437 | case IOC_OPAL_LOCK_UNLOCK: | |
2438 | ret = opal_lock_unlock(dev, p); | |
2439 | break; | |
2440 | case IOC_OPAL_TAKE_OWNERSHIP: | |
2441 | ret = opal_take_ownership(dev, p); | |
2442 | break; | |
2443 | case IOC_OPAL_ACTIVATE_LSP: | |
2444 | ret = opal_activate_lsp(dev, p); | |
2445 | break; | |
2446 | case IOC_OPAL_SET_PW: | |
2447 | ret = opal_set_new_pw(dev, p); | |
2448 | break; | |
2449 | case IOC_OPAL_ACTIVATE_USR: | |
2450 | ret = opal_activate_user(dev, p); | |
2451 | break; | |
2452 | case IOC_OPAL_REVERT_TPR: | |
2453 | ret = opal_reverttper(dev, p); | |
2454 | break; | |
2455 | case IOC_OPAL_LR_SETUP: | |
2456 | ret = opal_setup_locking_range(dev, p); | |
2457 | break; | |
2458 | case IOC_OPAL_ADD_USR_TO_LR: | |
2459 | ret = opal_add_user_to_lr(dev, p); | |
2460 | break; | |
2461 | case IOC_OPAL_ENABLE_DISABLE_MBR: | |
2462 | ret = opal_enable_disable_shadow_mbr(dev, p); | |
2463 | break; | |
2464 | case IOC_OPAL_ERASE_LR: | |
2465 | ret = opal_erase_locking_range(dev, p); | |
2466 | break; | |
2467 | case IOC_OPAL_SECURE_ERASE_LR: | |
2468 | ret = opal_secure_erase_locking_range(dev, p); | |
2469 | break; | |
455a7b23 SB |
2470 | default: |
2471 | pr_warn("No such Opal Ioctl %u\n", cmd); | |
2472 | } | |
e225c20e SB |
2473 | |
2474 | kfree(p); | |
2475 | return ret; | |
455a7b23 SB |
2476 | } |
2477 | EXPORT_SYMBOL_GPL(sed_ioctl); |