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8c16567d | 1 | // SPDX-License-Identifier: GPL-2.0 |
455a7b23 SB |
2 | /* |
3 | * Copyright © 2016 Intel Corporation | |
4 | * | |
5 | * Authors: | |
6 | * Scott Bauer <scott.bauer@intel.com> | |
7 | * Rafael Antognolli <rafael.antognolli@intel.com> | |
455a7b23 SB |
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/genhd.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/string.h> | |
22 | #include <linux/kdev_t.h> | |
23 | ||
24 | #include "opal_proto.h" | |
25 | ||
4f1244c8 CH |
26 | #define IO_BUFFER_LENGTH 2048 |
27 | #define MAX_TOKS 64 | |
28 | ||
eed64951 JD |
29 | struct opal_step { |
30 | int (*fn)(struct opal_dev *dev, void *data); | |
31 | void *data; | |
32 | }; | |
33 | typedef int (cont_fn)(struct opal_dev *dev); | |
4f1244c8 CH |
34 | |
35 | enum opal_atom_width { | |
36 | OPAL_WIDTH_TINY, | |
37 | OPAL_WIDTH_SHORT, | |
38 | OPAL_WIDTH_MEDIUM, | |
39 | OPAL_WIDTH_LONG, | |
40 | OPAL_WIDTH_TOKEN | |
41 | }; | |
42 | ||
43 | /* | |
44 | * On the parsed response, we don't store again the toks that are already | |
45 | * stored in the response buffer. Instead, for each token, we just store a | |
46 | * pointer to the position in the buffer where the token starts, and the size | |
47 | * of the token in bytes. | |
48 | */ | |
49 | struct opal_resp_tok { | |
50 | const u8 *pos; | |
51 | size_t len; | |
52 | enum opal_response_token type; | |
53 | enum opal_atom_width width; | |
54 | union { | |
55 | u64 u; | |
56 | s64 s; | |
57 | } stored; | |
58 | }; | |
59 | ||
60 | /* | |
61 | * From the response header it's not possible to know how many tokens there are | |
62 | * on the payload. So we hardcode that the maximum will be MAX_TOKS, and later | |
63 | * if we start dealing with messages that have more than that, we can increase | |
64 | * this number. This is done to avoid having to make two passes through the | |
65 | * response, the first one counting how many tokens we have and the second one | |
66 | * actually storing the positions. | |
67 | */ | |
68 | struct parsed_resp { | |
69 | int num; | |
70 | struct opal_resp_tok toks[MAX_TOKS]; | |
71 | }; | |
72 | ||
73 | struct opal_dev { | |
74 | bool supported; | |
dbec491b | 75 | bool mbr_enabled; |
4f1244c8 CH |
76 | |
77 | void *data; | |
78 | sec_send_recv *send_recv; | |
79 | ||
4f1244c8 CH |
80 | struct mutex dev_lock; |
81 | u16 comid; | |
82 | u32 hsn; | |
83 | u32 tsn; | |
84 | u64 align; | |
85 | u64 lowest_lba; | |
86 | ||
87 | size_t pos; | |
88 | u8 cmd[IO_BUFFER_LENGTH]; | |
89 | u8 resp[IO_BUFFER_LENGTH]; | |
90 | ||
91 | struct parsed_resp parsed; | |
92 | size_t prev_d_len; | |
93 | void *prev_data; | |
94 | ||
95 | struct list_head unlk_lst; | |
96 | }; | |
97 | ||
98 | ||
455a7b23 SB |
99 | static const u8 opaluid[][OPAL_UID_LENGTH] = { |
100 | /* users */ | |
101 | [OPAL_SMUID_UID] = | |
102 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff }, | |
103 | [OPAL_THISSP_UID] = | |
104 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 }, | |
105 | [OPAL_ADMINSP_UID] = | |
106 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x01 }, | |
107 | [OPAL_LOCKINGSP_UID] = | |
108 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x00, 0x00, 0x02 }, | |
109 | [OPAL_ENTERPRISE_LOCKINGSP_UID] = | |
110 | { 0x00, 0x00, 0x02, 0x05, 0x00, 0x01, 0x00, 0x01 }, | |
111 | [OPAL_ANYBODY_UID] = | |
112 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x01 }, | |
113 | [OPAL_SID_UID] = | |
114 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x06 }, | |
115 | [OPAL_ADMIN1_UID] = | |
116 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0x00, 0x01 }, | |
117 | [OPAL_USER1_UID] = | |
118 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x01 }, | |
119 | [OPAL_USER2_UID] = | |
120 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x03, 0x00, 0x02 }, | |
121 | [OPAL_PSID_UID] = | |
122 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x01, 0xff, 0x01 }, | |
123 | [OPAL_ENTERPRISE_BANDMASTER0_UID] = | |
124 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x80, 0x01 }, | |
125 | [OPAL_ENTERPRISE_ERASEMASTER_UID] = | |
126 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x84, 0x01 }, | |
127 | ||
128 | /* tables */ | |
129 | ||
130 | [OPAL_LOCKINGRANGE_GLOBAL] = | |
131 | { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 }, | |
132 | [OPAL_LOCKINGRANGE_ACE_RDLOCKED] = | |
133 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 }, | |
134 | [OPAL_LOCKINGRANGE_ACE_WRLOCKED] = | |
135 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 }, | |
136 | [OPAL_MBRCONTROL] = | |
137 | { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 }, | |
138 | [OPAL_MBR] = | |
139 | { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 }, | |
140 | [OPAL_AUTHORITY_TABLE] = | |
141 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00}, | |
142 | [OPAL_C_PIN_TABLE] = | |
143 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00}, | |
144 | [OPAL_LOCKING_INFO_TABLE] = | |
145 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 }, | |
146 | [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] = | |
147 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 }, | |
148 | ||
149 | /* C_PIN_TABLE object ID's */ | |
150 | ||
1e815b33 | 151 | [OPAL_C_PIN_MSID] = |
455a7b23 SB |
152 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x84, 0x02}, |
153 | [OPAL_C_PIN_SID] = | |
154 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x01}, | |
155 | [OPAL_C_PIN_ADMIN1] = | |
156 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x01, 0x00, 0x01}, | |
157 | ||
158 | /* half UID's (only first 4 bytes used) */ | |
159 | ||
160 | [OPAL_HALF_UID_AUTHORITY_OBJ_REF] = | |
161 | { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff }, | |
162 | [OPAL_HALF_UID_BOOLEAN_ACE] = | |
163 | { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff }, | |
164 | ||
165 | /* special value for omitted optional parameter */ | |
166 | [OPAL_UID_HEXFF] = | |
167 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, | |
168 | }; | |
169 | ||
170 | /* | |
171 | * TCG Storage SSC Methods. | |
172 | * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
173 | * Section: 6.3 Assigned UIDs | |
174 | */ | |
1b6b75b0 | 175 | static const u8 opalmethod[][OPAL_METHOD_LENGTH] = { |
455a7b23 SB |
176 | [OPAL_PROPERTIES] = |
177 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 }, | |
178 | [OPAL_STARTSESSION] = | |
179 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 }, | |
180 | [OPAL_REVERT] = | |
181 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 }, | |
182 | [OPAL_ACTIVATE] = | |
183 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 }, | |
184 | [OPAL_EGET] = | |
185 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 }, | |
186 | [OPAL_ESET] = | |
187 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 }, | |
188 | [OPAL_NEXT] = | |
189 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 }, | |
190 | [OPAL_EAUTHENTICATE] = | |
191 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c }, | |
192 | [OPAL_GETACL] = | |
193 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d }, | |
194 | [OPAL_GENKEY] = | |
195 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 }, | |
196 | [OPAL_REVERTSP] = | |
197 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 }, | |
198 | [OPAL_GET] = | |
199 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 }, | |
200 | [OPAL_SET] = | |
201 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 }, | |
202 | [OPAL_AUTHENTICATE] = | |
203 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c }, | |
204 | [OPAL_RANDOM] = | |
205 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 }, | |
206 | [OPAL_ERASE] = | |
207 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 }, | |
208 | }; | |
209 | ||
455a7b23 | 210 | static int end_opal_session_error(struct opal_dev *dev); |
0af2648e | 211 | static int opal_discovery0_step(struct opal_dev *dev); |
455a7b23 SB |
212 | |
213 | struct opal_suspend_data { | |
214 | struct opal_lock_unlock unlk; | |
215 | u8 lr; | |
216 | struct list_head node; | |
217 | }; | |
218 | ||
219 | /* | |
220 | * Derived from: | |
221 | * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
222 | * Section: 5.1.5 Method Status Codes | |
223 | */ | |
224 | static const char * const opal_errors[] = { | |
225 | "Success", | |
226 | "Not Authorized", | |
227 | "Unknown Error", | |
228 | "SP Busy", | |
229 | "SP Failed", | |
230 | "SP Disabled", | |
231 | "SP Frozen", | |
232 | "No Sessions Available", | |
233 | "Uniqueness Conflict", | |
234 | "Insufficient Space", | |
235 | "Insufficient Rows", | |
236 | "Invalid Function", | |
237 | "Invalid Parameter", | |
238 | "Invalid Reference", | |
239 | "Unknown Error", | |
240 | "TPER Malfunction", | |
241 | "Transaction Failure", | |
242 | "Response Overflow", | |
243 | "Authority Locked Out", | |
244 | }; | |
245 | ||
246 | static const char *opal_error_to_human(int error) | |
247 | { | |
248 | if (error == 0x3f) | |
249 | return "Failed"; | |
250 | ||
251 | if (error >= ARRAY_SIZE(opal_errors) || error < 0) | |
252 | return "Unknown Error"; | |
253 | ||
254 | return opal_errors[error]; | |
255 | } | |
256 | ||
257 | static void print_buffer(const u8 *ptr, u32 length) | |
258 | { | |
259 | #ifdef DEBUG | |
260 | print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length); | |
261 | pr_debug("\n"); | |
262 | #endif | |
263 | } | |
264 | ||
265 | static bool check_tper(const void *data) | |
266 | { | |
267 | const struct d0_tper_features *tper = data; | |
268 | u8 flags = tper->supported_features; | |
269 | ||
270 | if (!(flags & TPER_SYNC_SUPPORTED)) { | |
591c59d1 SB |
271 | pr_debug("TPer sync not supported. flags = %d\n", |
272 | tper->supported_features); | |
455a7b23 SB |
273 | return false; |
274 | } | |
275 | ||
276 | return true; | |
277 | } | |
278 | ||
dbec491b SB |
279 | static bool check_mbrenabled(const void *data) |
280 | { | |
281 | const struct d0_locking_features *lfeat = data; | |
282 | u8 sup_feat = lfeat->supported_features; | |
283 | ||
284 | return !!(sup_feat & MBR_ENABLED_MASK); | |
285 | } | |
286 | ||
455a7b23 SB |
287 | static bool check_sum(const void *data) |
288 | { | |
289 | const struct d0_single_user_mode *sum = data; | |
290 | u32 nlo = be32_to_cpu(sum->num_locking_objects); | |
291 | ||
292 | if (nlo == 0) { | |
591c59d1 | 293 | pr_debug("Need at least one locking object.\n"); |
455a7b23 SB |
294 | return false; |
295 | } | |
296 | ||
297 | pr_debug("Number of locking objects: %d\n", nlo); | |
298 | ||
299 | return true; | |
300 | } | |
301 | ||
302 | static u16 get_comid_v100(const void *data) | |
303 | { | |
304 | const struct d0_opal_v100 *v100 = data; | |
305 | ||
306 | return be16_to_cpu(v100->baseComID); | |
307 | } | |
308 | ||
309 | static u16 get_comid_v200(const void *data) | |
310 | { | |
311 | const struct d0_opal_v200 *v200 = data; | |
312 | ||
313 | return be16_to_cpu(v200->baseComID); | |
314 | } | |
315 | ||
316 | static int opal_send_cmd(struct opal_dev *dev) | |
317 | { | |
4f1244c8 | 318 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
319 | dev->cmd, IO_BUFFER_LENGTH, |
320 | true); | |
321 | } | |
322 | ||
323 | static int opal_recv_cmd(struct opal_dev *dev) | |
324 | { | |
4f1244c8 | 325 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
326 | dev->resp, IO_BUFFER_LENGTH, |
327 | false); | |
328 | } | |
329 | ||
330 | static int opal_recv_check(struct opal_dev *dev) | |
331 | { | |
332 | size_t buflen = IO_BUFFER_LENGTH; | |
333 | void *buffer = dev->resp; | |
334 | struct opal_header *hdr = buffer; | |
335 | int ret; | |
336 | ||
337 | do { | |
338 | pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n", | |
339 | hdr->cp.outstandingData, | |
340 | hdr->cp.minTransfer); | |
341 | ||
342 | if (hdr->cp.outstandingData == 0 || | |
343 | hdr->cp.minTransfer != 0) | |
344 | return 0; | |
345 | ||
346 | memset(buffer, 0, buflen); | |
347 | ret = opal_recv_cmd(dev); | |
348 | } while (!ret); | |
349 | ||
350 | return ret; | |
351 | } | |
352 | ||
353 | static int opal_send_recv(struct opal_dev *dev, cont_fn *cont) | |
354 | { | |
355 | int ret; | |
356 | ||
357 | ret = opal_send_cmd(dev); | |
358 | if (ret) | |
359 | return ret; | |
360 | ret = opal_recv_cmd(dev); | |
361 | if (ret) | |
362 | return ret; | |
363 | ret = opal_recv_check(dev); | |
364 | if (ret) | |
365 | return ret; | |
366 | return cont(dev); | |
367 | } | |
368 | ||
369 | static void check_geometry(struct opal_dev *dev, const void *data) | |
370 | { | |
371 | const struct d0_geometry_features *geo = data; | |
372 | ||
373 | dev->align = geo->alignment_granularity; | |
374 | dev->lowest_lba = geo->lowest_aligned_lba; | |
375 | } | |
376 | ||
0af2648e DK |
377 | static int execute_step(struct opal_dev *dev, |
378 | const struct opal_step *step, size_t stepIndex) | |
379 | { | |
380 | int error = step->fn(dev, step->data); | |
381 | ||
382 | if (error) { | |
383 | pr_debug("Step %zu (%pS) failed with error %d: %s\n", | |
384 | stepIndex, step->fn, error, | |
385 | opal_error_to_human(error)); | |
386 | } | |
387 | ||
388 | return error; | |
389 | } | |
390 | ||
a80f36cc DK |
391 | static int execute_steps(struct opal_dev *dev, |
392 | const struct opal_step *steps, size_t n_steps) | |
455a7b23 | 393 | { |
0af2648e DK |
394 | size_t state = 0; |
395 | int error; | |
455a7b23 | 396 | |
0af2648e DK |
397 | /* first do a discovery0 */ |
398 | error = opal_discovery0_step(dev); | |
399 | if (error) | |
400 | return error; | |
455a7b23 | 401 | |
0af2648e DK |
402 | for (state = 0; state < n_steps; state++) { |
403 | error = execute_step(dev, &steps[state], state); | |
3db87236 DK |
404 | if (error) |
405 | goto out_error; | |
406 | } | |
2d19020b | 407 | |
3db87236 DK |
408 | return 0; |
409 | ||
410 | out_error: | |
411 | /* | |
0af2648e DK |
412 | * For each OPAL command the first step in steps starts some sort of |
413 | * session. If an error occurred in the initial discovery0 or if an | |
414 | * error occurred in the first step (and thus stopping the loop with | |
415 | * state == 0) then there was an error before or during the attempt to | |
416 | * start a session. Therefore we shouldn't attempt to terminate a | |
417 | * session, as one has not yet been created. | |
3db87236 | 418 | */ |
0af2648e | 419 | if (state > 0) |
3db87236 | 420 | end_opal_session_error(dev); |
455a7b23 SB |
421 | |
422 | return error; | |
423 | } | |
424 | ||
425 | static int opal_discovery0_end(struct opal_dev *dev) | |
426 | { | |
427 | bool found_com_id = false, supported = true, single_user = false; | |
428 | const struct d0_header *hdr = (struct d0_header *)dev->resp; | |
429 | const u8 *epos = dev->resp, *cpos = dev->resp; | |
430 | u16 comid = 0; | |
77039b96 | 431 | u32 hlen = be32_to_cpu(hdr->length); |
455a7b23 | 432 | |
77039b96 | 433 | print_buffer(dev->resp, hlen); |
dbec491b | 434 | dev->mbr_enabled = false; |
455a7b23 | 435 | |
77039b96 | 436 | if (hlen > IO_BUFFER_LENGTH - sizeof(*hdr)) { |
591c59d1 SB |
437 | pr_debug("Discovery length overflows buffer (%zu+%u)/%u\n", |
438 | sizeof(*hdr), hlen, IO_BUFFER_LENGTH); | |
77039b96 JD |
439 | return -EFAULT; |
440 | } | |
441 | ||
442 | epos += hlen; /* end of buffer */ | |
455a7b23 SB |
443 | cpos += sizeof(*hdr); /* current position on buffer */ |
444 | ||
445 | while (cpos < epos && supported) { | |
446 | const struct d0_features *body = | |
447 | (const struct d0_features *)cpos; | |
448 | ||
449 | switch (be16_to_cpu(body->code)) { | |
450 | case FC_TPER: | |
451 | supported = check_tper(body->features); | |
452 | break; | |
453 | case FC_SINGLEUSER: | |
454 | single_user = check_sum(body->features); | |
455 | break; | |
456 | case FC_GEOMETRY: | |
457 | check_geometry(dev, body); | |
458 | break; | |
459 | case FC_LOCKING: | |
dbec491b SB |
460 | dev->mbr_enabled = check_mbrenabled(body->features); |
461 | break; | |
455a7b23 SB |
462 | case FC_ENTERPRISE: |
463 | case FC_DATASTORE: | |
464 | /* some ignored properties */ | |
465 | pr_debug("Found OPAL feature description: %d\n", | |
466 | be16_to_cpu(body->code)); | |
467 | break; | |
468 | case FC_OPALV100: | |
469 | comid = get_comid_v100(body->features); | |
470 | found_com_id = true; | |
471 | break; | |
472 | case FC_OPALV200: | |
473 | comid = get_comid_v200(body->features); | |
474 | found_com_id = true; | |
475 | break; | |
476 | case 0xbfff ... 0xffff: | |
477 | /* vendor specific, just ignore */ | |
478 | break; | |
479 | default: | |
480 | pr_debug("OPAL Unknown feature: %d\n", | |
481 | be16_to_cpu(body->code)); | |
482 | ||
483 | } | |
484 | cpos += body->length + 4; | |
485 | } | |
486 | ||
487 | if (!supported) { | |
f5b37b7c | 488 | pr_debug("This device is not Opal enabled. Not Supported!\n"); |
455a7b23 SB |
489 | return -EOPNOTSUPP; |
490 | } | |
491 | ||
492 | if (!single_user) | |
f5b37b7c | 493 | pr_debug("Device doesn't support single user mode\n"); |
455a7b23 SB |
494 | |
495 | ||
496 | if (!found_com_id) { | |
f5b37b7c | 497 | pr_debug("Could not find OPAL comid for device. Returning early\n"); |
ed7158ba | 498 | return -EOPNOTSUPP; |
455a7b23 SB |
499 | } |
500 | ||
501 | dev->comid = comid; | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
eed64951 | 506 | static int opal_discovery0(struct opal_dev *dev, void *data) |
455a7b23 SB |
507 | { |
508 | int ret; | |
509 | ||
510 | memset(dev->resp, 0, IO_BUFFER_LENGTH); | |
511 | dev->comid = OPAL_DISCOVERY_COMID; | |
512 | ret = opal_recv_cmd(dev); | |
513 | if (ret) | |
514 | return ret; | |
515 | return opal_discovery0_end(dev); | |
516 | } | |
517 | ||
0af2648e DK |
518 | static int opal_discovery0_step(struct opal_dev *dev) |
519 | { | |
520 | const struct opal_step discovery0_step = { | |
521 | opal_discovery0, | |
522 | }; | |
523 | return execute_step(dev, &discovery0_step, 0); | |
524 | } | |
525 | ||
e2821a50 | 526 | static bool can_add(int *err, struct opal_dev *cmd, size_t len) |
455a7b23 SB |
527 | { |
528 | if (*err) | |
e2821a50 JR |
529 | return false; |
530 | ||
531 | if (len > IO_BUFFER_LENGTH || cmd->pos > IO_BUFFER_LENGTH - len) { | |
532 | pr_debug("Error adding %zu bytes: end of buffer.\n", len); | |
455a7b23 | 533 | *err = -ERANGE; |
e2821a50 | 534 | return false; |
455a7b23 | 535 | } |
e2821a50 JR |
536 | |
537 | return true; | |
538 | } | |
539 | ||
540 | static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok) | |
541 | { | |
542 | if (!can_add(err, cmd, 1)) | |
543 | return; | |
455a7b23 SB |
544 | cmd->cmd[cmd->pos++] = tok; |
545 | } | |
546 | ||
547 | static void add_short_atom_header(struct opal_dev *cmd, bool bytestring, | |
548 | bool has_sign, int len) | |
549 | { | |
550 | u8 atom; | |
551 | int err = 0; | |
552 | ||
553 | atom = SHORT_ATOM_ID; | |
554 | atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0; | |
555 | atom |= has_sign ? SHORT_ATOM_SIGNED : 0; | |
556 | atom |= len & SHORT_ATOM_LEN_MASK; | |
557 | ||
558 | add_token_u8(&err, cmd, atom); | |
559 | } | |
560 | ||
561 | static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring, | |
562 | bool has_sign, int len) | |
563 | { | |
564 | u8 header0; | |
565 | ||
566 | header0 = MEDIUM_ATOM_ID; | |
567 | header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0; | |
568 | header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0; | |
569 | header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK; | |
570 | cmd->cmd[cmd->pos++] = header0; | |
571 | cmd->cmd[cmd->pos++] = len; | |
572 | } | |
573 | ||
574 | static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) | |
575 | { | |
455a7b23 SB |
576 | size_t len; |
577 | int msb; | |
455a7b23 SB |
578 | |
579 | if (!(number & ~TINY_ATOM_DATA_MASK)) { | |
580 | add_token_u8(err, cmd, number); | |
581 | return; | |
582 | } | |
583 | ||
5f990d31 JR |
584 | msb = fls64(number); |
585 | len = DIV_ROUND_UP(msb, 8); | |
455a7b23 | 586 | |
e2821a50 | 587 | if (!can_add(err, cmd, len + 1)) { |
591c59d1 | 588 | pr_debug("Error adding u64: end of buffer.\n"); |
455a7b23 SB |
589 | return; |
590 | } | |
591 | add_short_atom_header(cmd, false, false, len); | |
5f990d31 JR |
592 | while (len--) |
593 | add_token_u8(err, cmd, number >> (len * 8)); | |
455a7b23 SB |
594 | } |
595 | ||
28559959 | 596 | static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len) |
455a7b23 SB |
597 | { |
598 | size_t header_len = 1; | |
599 | bool is_short_atom = true; | |
600 | ||
455a7b23 SB |
601 | if (len & ~SHORT_ATOM_LEN_MASK) { |
602 | header_len = 2; | |
603 | is_short_atom = false; | |
604 | } | |
605 | ||
e2821a50 | 606 | if (!can_add(err, cmd, header_len + len)) { |
591c59d1 | 607 | pr_debug("Error adding bytestring: end of buffer.\n"); |
28559959 | 608 | return NULL; |
455a7b23 SB |
609 | } |
610 | ||
611 | if (is_short_atom) | |
612 | add_short_atom_header(cmd, true, false, len); | |
613 | else | |
614 | add_medium_atom_header(cmd, true, false, len); | |
615 | ||
28559959 JR |
616 | return &cmd->cmd[cmd->pos]; |
617 | } | |
455a7b23 | 618 | |
28559959 JR |
619 | static void add_token_bytestring(int *err, struct opal_dev *cmd, |
620 | const u8 *bytestring, size_t len) | |
621 | { | |
622 | u8 *start; | |
623 | ||
624 | start = add_bytestring_header(err, cmd, len); | |
625 | if (!start) | |
626 | return; | |
627 | memcpy(start, bytestring, len); | |
628 | cmd->pos += len; | |
455a7b23 SB |
629 | } |
630 | ||
631 | static int build_locking_range(u8 *buffer, size_t length, u8 lr) | |
632 | { | |
633 | if (length > OPAL_UID_LENGTH) { | |
591c59d1 | 634 | pr_debug("Can't build locking range. Length OOB\n"); |
455a7b23 SB |
635 | return -ERANGE; |
636 | } | |
637 | ||
638 | memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH); | |
639 | ||
640 | if (lr == 0) | |
641 | return 0; | |
642 | buffer[5] = LOCKING_RANGE_NON_GLOBAL; | |
643 | buffer[7] = lr; | |
644 | ||
645 | return 0; | |
646 | } | |
647 | ||
648 | static int build_locking_user(u8 *buffer, size_t length, u8 lr) | |
649 | { | |
650 | if (length > OPAL_UID_LENGTH) { | |
1e815b33 | 651 | pr_debug("Can't build locking range user. Length OOB\n"); |
455a7b23 SB |
652 | return -ERANGE; |
653 | } | |
654 | ||
655 | memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
656 | ||
657 | buffer[7] = lr + 1; | |
658 | ||
659 | return 0; | |
660 | } | |
661 | ||
662 | static void set_comid(struct opal_dev *cmd, u16 comid) | |
663 | { | |
664 | struct opal_header *hdr = (struct opal_header *)cmd->cmd; | |
665 | ||
666 | hdr->cp.extendedComID[0] = comid >> 8; | |
667 | hdr->cp.extendedComID[1] = comid; | |
668 | hdr->cp.extendedComID[2] = 0; | |
669 | hdr->cp.extendedComID[3] = 0; | |
670 | } | |
671 | ||
672 | static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn) | |
673 | { | |
674 | struct opal_header *hdr; | |
675 | int err = 0; | |
676 | ||
e8b29224 | 677 | /* close the parameter list opened from cmd_start */ |
78d584ca DK |
678 | add_token_u8(&err, cmd, OPAL_ENDLIST); |
679 | ||
455a7b23 SB |
680 | add_token_u8(&err, cmd, OPAL_ENDOFDATA); |
681 | add_token_u8(&err, cmd, OPAL_STARTLIST); | |
682 | add_token_u8(&err, cmd, 0); | |
683 | add_token_u8(&err, cmd, 0); | |
684 | add_token_u8(&err, cmd, 0); | |
685 | add_token_u8(&err, cmd, OPAL_ENDLIST); | |
686 | ||
687 | if (err) { | |
591c59d1 | 688 | pr_debug("Error finalizing command.\n"); |
455a7b23 SB |
689 | return -EFAULT; |
690 | } | |
691 | ||
692 | hdr = (struct opal_header *) cmd->cmd; | |
693 | ||
694 | hdr->pkt.tsn = cpu_to_be32(tsn); | |
695 | hdr->pkt.hsn = cpu_to_be32(hsn); | |
696 | ||
697 | hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr)); | |
698 | while (cmd->pos % 4) { | |
699 | if (cmd->pos >= IO_BUFFER_LENGTH) { | |
591c59d1 | 700 | pr_debug("Error: Buffer overrun\n"); |
455a7b23 SB |
701 | return -ERANGE; |
702 | } | |
703 | cmd->cmd[cmd->pos++] = 0; | |
704 | } | |
705 | hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) - | |
706 | sizeof(hdr->pkt)); | |
707 | hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp)); | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
cccb9241 JD |
712 | static const struct opal_resp_tok *response_get_token( |
713 | const struct parsed_resp *resp, | |
714 | int n) | |
455a7b23 SB |
715 | { |
716 | const struct opal_resp_tok *tok; | |
717 | ||
7d9b62ae DK |
718 | if (!resp) { |
719 | pr_debug("Response is NULL\n"); | |
720 | return ERR_PTR(-EINVAL); | |
721 | } | |
722 | ||
455a7b23 | 723 | if (n >= resp->num) { |
591c59d1 SB |
724 | pr_debug("Token number doesn't exist: %d, resp: %d\n", |
725 | n, resp->num); | |
cccb9241 | 726 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
727 | } |
728 | ||
729 | tok = &resp->toks[n]; | |
730 | if (tok->len == 0) { | |
591c59d1 | 731 | pr_debug("Token length must be non-zero\n"); |
cccb9241 | 732 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
733 | } |
734 | ||
cccb9241 | 735 | return tok; |
455a7b23 SB |
736 | } |
737 | ||
aedb6e24 JD |
738 | static ssize_t response_parse_tiny(struct opal_resp_tok *tok, |
739 | const u8 *pos) | |
455a7b23 SB |
740 | { |
741 | tok->pos = pos; | |
742 | tok->len = 1; | |
743 | tok->width = OPAL_WIDTH_TINY; | |
744 | ||
745 | if (pos[0] & TINY_ATOM_SIGNED) { | |
746 | tok->type = OPAL_DTA_TOKENID_SINT; | |
747 | } else { | |
748 | tok->type = OPAL_DTA_TOKENID_UINT; | |
749 | tok->stored.u = pos[0] & 0x3f; | |
750 | } | |
751 | ||
752 | return tok->len; | |
753 | } | |
754 | ||
aedb6e24 JD |
755 | static ssize_t response_parse_short(struct opal_resp_tok *tok, |
756 | const u8 *pos) | |
455a7b23 SB |
757 | { |
758 | tok->pos = pos; | |
759 | tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1; | |
760 | tok->width = OPAL_WIDTH_SHORT; | |
761 | ||
762 | if (pos[0] & SHORT_ATOM_BYTESTRING) { | |
763 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
764 | } else if (pos[0] & SHORT_ATOM_SIGNED) { | |
765 | tok->type = OPAL_DTA_TOKENID_SINT; | |
766 | } else { | |
767 | u64 u_integer = 0; | |
aedb6e24 | 768 | ssize_t i, b = 0; |
455a7b23 SB |
769 | |
770 | tok->type = OPAL_DTA_TOKENID_UINT; | |
771 | if (tok->len > 9) { | |
591c59d1 | 772 | pr_debug("uint64 with more than 8 bytes\n"); |
455a7b23 SB |
773 | return -EINVAL; |
774 | } | |
775 | for (i = tok->len - 1; i > 0; i--) { | |
776 | u_integer |= ((u64)pos[i] << (8 * b)); | |
777 | b++; | |
778 | } | |
779 | tok->stored.u = u_integer; | |
780 | } | |
781 | ||
782 | return tok->len; | |
783 | } | |
784 | ||
aedb6e24 JD |
785 | static ssize_t response_parse_medium(struct opal_resp_tok *tok, |
786 | const u8 *pos) | |
455a7b23 SB |
787 | { |
788 | tok->pos = pos; | |
789 | tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2; | |
790 | tok->width = OPAL_WIDTH_MEDIUM; | |
791 | ||
792 | if (pos[0] & MEDIUM_ATOM_BYTESTRING) | |
793 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
794 | else if (pos[0] & MEDIUM_ATOM_SIGNED) | |
795 | tok->type = OPAL_DTA_TOKENID_SINT; | |
796 | else | |
797 | tok->type = OPAL_DTA_TOKENID_UINT; | |
798 | ||
799 | return tok->len; | |
800 | } | |
801 | ||
aedb6e24 JD |
802 | static ssize_t response_parse_long(struct opal_resp_tok *tok, |
803 | const u8 *pos) | |
455a7b23 SB |
804 | { |
805 | tok->pos = pos; | |
806 | tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4; | |
807 | tok->width = OPAL_WIDTH_LONG; | |
808 | ||
809 | if (pos[0] & LONG_ATOM_BYTESTRING) | |
810 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
811 | else if (pos[0] & LONG_ATOM_SIGNED) | |
812 | tok->type = OPAL_DTA_TOKENID_SINT; | |
813 | else | |
814 | tok->type = OPAL_DTA_TOKENID_UINT; | |
815 | ||
816 | return tok->len; | |
817 | } | |
818 | ||
aedb6e24 JD |
819 | static ssize_t response_parse_token(struct opal_resp_tok *tok, |
820 | const u8 *pos) | |
455a7b23 SB |
821 | { |
822 | tok->pos = pos; | |
823 | tok->len = 1; | |
824 | tok->type = OPAL_DTA_TOKENID_TOKEN; | |
825 | tok->width = OPAL_WIDTH_TOKEN; | |
826 | ||
827 | return tok->len; | |
828 | } | |
829 | ||
830 | static int response_parse(const u8 *buf, size_t length, | |
831 | struct parsed_resp *resp) | |
832 | { | |
833 | const struct opal_header *hdr; | |
834 | struct opal_resp_tok *iter; | |
835 | int num_entries = 0; | |
836 | int total; | |
aedb6e24 | 837 | ssize_t token_length; |
455a7b23 | 838 | const u8 *pos; |
77039b96 | 839 | u32 clen, plen, slen; |
455a7b23 SB |
840 | |
841 | if (!buf) | |
842 | return -EFAULT; | |
843 | ||
844 | if (!resp) | |
845 | return -EFAULT; | |
846 | ||
847 | hdr = (struct opal_header *)buf; | |
848 | pos = buf; | |
849 | pos += sizeof(*hdr); | |
850 | ||
77039b96 JD |
851 | clen = be32_to_cpu(hdr->cp.length); |
852 | plen = be32_to_cpu(hdr->pkt.length); | |
853 | slen = be32_to_cpu(hdr->subpkt.length); | |
854 | pr_debug("Response size: cp: %u, pkt: %u, subpkt: %u\n", | |
855 | clen, plen, slen); | |
856 | ||
857 | if (clen == 0 || plen == 0 || slen == 0 || | |
858 | slen > IO_BUFFER_LENGTH - sizeof(*hdr)) { | |
591c59d1 SB |
859 | pr_debug("Bad header length. cp: %u, pkt: %u, subpkt: %u\n", |
860 | clen, plen, slen); | |
455a7b23 SB |
861 | print_buffer(pos, sizeof(*hdr)); |
862 | return -EINVAL; | |
863 | } | |
864 | ||
865 | if (pos > buf + length) | |
866 | return -EFAULT; | |
867 | ||
868 | iter = resp->toks; | |
77039b96 | 869 | total = slen; |
455a7b23 SB |
870 | print_buffer(pos, total); |
871 | while (total > 0) { | |
872 | if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */ | |
873 | token_length = response_parse_tiny(iter, pos); | |
874 | else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */ | |
875 | token_length = response_parse_short(iter, pos); | |
876 | else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */ | |
877 | token_length = response_parse_medium(iter, pos); | |
878 | else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */ | |
879 | token_length = response_parse_long(iter, pos); | |
880 | else /* TOKEN */ | |
881 | token_length = response_parse_token(iter, pos); | |
882 | ||
aedb6e24 JD |
883 | if (token_length < 0) |
884 | return token_length; | |
455a7b23 SB |
885 | |
886 | pos += token_length; | |
887 | total -= token_length; | |
888 | iter++; | |
889 | num_entries++; | |
890 | } | |
891 | ||
892 | if (num_entries == 0) { | |
591c59d1 | 893 | pr_debug("Couldn't parse response.\n"); |
455a7b23 SB |
894 | return -EINVAL; |
895 | } | |
896 | resp->num = num_entries; | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
901 | static size_t response_get_string(const struct parsed_resp *resp, int n, | |
902 | const char **store) | |
903 | { | |
d15e1175 | 904 | u8 skip; |
b68f09ec | 905 | const struct opal_resp_tok *tok; |
d15e1175 | 906 | |
455a7b23 | 907 | *store = NULL; |
b68f09ec DK |
908 | tok = response_get_token(resp, n); |
909 | if (IS_ERR(tok)) | |
455a7b23 | 910 | return 0; |
455a7b23 | 911 | |
b68f09ec | 912 | if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) { |
591c59d1 | 913 | pr_debug("Token is not a byte string!\n"); |
455a7b23 SB |
914 | return 0; |
915 | } | |
916 | ||
b68f09ec | 917 | switch (tok->width) { |
d15e1175 JR |
918 | case OPAL_WIDTH_TINY: |
919 | case OPAL_WIDTH_SHORT: | |
920 | skip = 1; | |
921 | break; | |
922 | case OPAL_WIDTH_MEDIUM: | |
923 | skip = 2; | |
924 | break; | |
925 | case OPAL_WIDTH_LONG: | |
926 | skip = 4; | |
927 | break; | |
928 | default: | |
929 | pr_debug("Token has invalid width!\n"); | |
930 | return 0; | |
931 | } | |
932 | ||
b68f09ec DK |
933 | *store = tok->pos + skip; |
934 | return tok->len - skip; | |
455a7b23 SB |
935 | } |
936 | ||
937 | static u64 response_get_u64(const struct parsed_resp *resp, int n) | |
938 | { | |
b68f09ec | 939 | const struct opal_resp_tok *tok; |
455a7b23 | 940 | |
b68f09ec DK |
941 | tok = response_get_token(resp, n); |
942 | if (IS_ERR(tok)) | |
455a7b23 | 943 | return 0; |
455a7b23 | 944 | |
b68f09ec DK |
945 | if (tok->type != OPAL_DTA_TOKENID_UINT) { |
946 | pr_debug("Token is not unsigned int: %d\n", tok->type); | |
455a7b23 SB |
947 | return 0; |
948 | } | |
949 | ||
b68f09ec DK |
950 | if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) { |
951 | pr_debug("Atom is not short or tiny: %d\n", tok->width); | |
455a7b23 SB |
952 | return 0; |
953 | } | |
954 | ||
b68f09ec | 955 | return tok->stored.u; |
455a7b23 SB |
956 | } |
957 | ||
cccb9241 JD |
958 | static bool response_token_matches(const struct opal_resp_tok *token, u8 match) |
959 | { | |
960 | if (IS_ERR(token) || | |
961 | token->type != OPAL_DTA_TOKENID_TOKEN || | |
962 | token->pos[0] != match) | |
963 | return false; | |
964 | return true; | |
965 | } | |
966 | ||
455a7b23 SB |
967 | static u8 response_status(const struct parsed_resp *resp) |
968 | { | |
cccb9241 JD |
969 | const struct opal_resp_tok *tok; |
970 | ||
971 | tok = response_get_token(resp, 0); | |
972 | if (response_token_matches(tok, OPAL_ENDOFSESSION)) | |
455a7b23 | 973 | return 0; |
455a7b23 SB |
974 | |
975 | if (resp->num < 5) | |
976 | return DTAERROR_NO_METHOD_STATUS; | |
977 | ||
cccb9241 JD |
978 | tok = response_get_token(resp, resp->num - 5); |
979 | if (!response_token_matches(tok, OPAL_STARTLIST)) | |
980 | return DTAERROR_NO_METHOD_STATUS; | |
981 | ||
982 | tok = response_get_token(resp, resp->num - 1); | |
983 | if (!response_token_matches(tok, OPAL_ENDLIST)) | |
455a7b23 SB |
984 | return DTAERROR_NO_METHOD_STATUS; |
985 | ||
986 | return response_get_u64(resp, resp->num - 4); | |
987 | } | |
988 | ||
989 | /* Parses and checks for errors */ | |
990 | static int parse_and_check_status(struct opal_dev *dev) | |
991 | { | |
992 | int error; | |
993 | ||
994 | print_buffer(dev->cmd, dev->pos); | |
995 | ||
996 | error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed); | |
997 | if (error) { | |
591c59d1 | 998 | pr_debug("Couldn't parse response.\n"); |
455a7b23 SB |
999 | return error; |
1000 | } | |
1001 | ||
1002 | return response_status(&dev->parsed); | |
1003 | } | |
1004 | ||
1005 | static void clear_opal_cmd(struct opal_dev *dev) | |
1006 | { | |
1007 | dev->pos = sizeof(struct opal_header); | |
1008 | memset(dev->cmd, 0, IO_BUFFER_LENGTH); | |
1009 | } | |
1010 | ||
e8b29224 DK |
1011 | static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method) |
1012 | { | |
1013 | int err = 0; | |
1014 | ||
1015 | clear_opal_cmd(dev); | |
1016 | set_comid(dev, dev->comid); | |
1017 | ||
1018 | add_token_u8(&err, dev, OPAL_CALL); | |
1019 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1020 | add_token_bytestring(&err, dev, method, OPAL_METHOD_LENGTH); | |
1021 | ||
1022 | /* | |
1023 | * Every method call is followed by its parameters enclosed within | |
1024 | * OPAL_STARTLIST and OPAL_ENDLIST tokens. We automatically open the | |
1025 | * parameter list here and close it later in cmd_finalize. | |
1026 | */ | |
1027 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1028 | ||
1029 | return err; | |
1030 | } | |
1031 | ||
455a7b23 SB |
1032 | static int start_opal_session_cont(struct opal_dev *dev) |
1033 | { | |
1034 | u32 hsn, tsn; | |
1035 | int error = 0; | |
1036 | ||
1037 | error = parse_and_check_status(dev); | |
1038 | if (error) | |
1039 | return error; | |
1040 | ||
1041 | hsn = response_get_u64(&dev->parsed, 4); | |
1042 | tsn = response_get_u64(&dev->parsed, 5); | |
1043 | ||
1044 | if (hsn == 0 && tsn == 0) { | |
591c59d1 | 1045 | pr_debug("Couldn't authenticate session\n"); |
455a7b23 SB |
1046 | return -EPERM; |
1047 | } | |
1048 | ||
1049 | dev->hsn = hsn; | |
1050 | dev->tsn = tsn; | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | static void add_suspend_info(struct opal_dev *dev, | |
1055 | struct opal_suspend_data *sus) | |
1056 | { | |
1057 | struct opal_suspend_data *iter; | |
1058 | ||
1059 | list_for_each_entry(iter, &dev->unlk_lst, node) { | |
1060 | if (iter->lr == sus->lr) { | |
1061 | list_del(&iter->node); | |
1062 | kfree(iter); | |
1063 | break; | |
1064 | } | |
1065 | } | |
1066 | list_add_tail(&sus->node, &dev->unlk_lst); | |
1067 | } | |
1068 | ||
1069 | static int end_session_cont(struct opal_dev *dev) | |
1070 | { | |
1071 | dev->hsn = 0; | |
1072 | dev->tsn = 0; | |
1073 | return parse_and_check_status(dev); | |
1074 | } | |
1075 | ||
1076 | static int finalize_and_send(struct opal_dev *dev, cont_fn cont) | |
1077 | { | |
1078 | int ret; | |
1079 | ||
1080 | ret = cmd_finalize(dev, dev->hsn, dev->tsn); | |
1081 | if (ret) { | |
591c59d1 | 1082 | pr_debug("Error finalizing command buffer: %d\n", ret); |
455a7b23 SB |
1083 | return ret; |
1084 | } | |
1085 | ||
1086 | print_buffer(dev->cmd, dev->pos); | |
1087 | ||
1088 | return opal_send_recv(dev, cont); | |
1089 | } | |
1090 | ||
3fff234b DK |
1091 | /* |
1092 | * request @column from table @table on device @dev. On success, the column | |
1093 | * data will be available in dev->resp->tok[4] | |
1094 | */ | |
1095 | static int generic_get_column(struct opal_dev *dev, const u8 *table, | |
1096 | u64 column) | |
1097 | { | |
1098 | int err; | |
1099 | ||
1100 | err = cmd_start(dev, table, opalmethod[OPAL_GET]); | |
1101 | ||
1102 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1103 | ||
1104 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1105 | add_token_u8(&err, dev, OPAL_STARTCOLUMN); | |
1106 | add_token_u64(&err, dev, column); | |
1107 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1108 | ||
1109 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1110 | add_token_u8(&err, dev, OPAL_ENDCOLUMN); | |
1111 | add_token_u64(&err, dev, column); | |
1112 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1113 | ||
1114 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1115 | ||
1116 | if (err) | |
1117 | return err; | |
1118 | ||
1119 | return finalize_and_send(dev, parse_and_check_status); | |
1120 | } | |
1121 | ||
eed64951 | 1122 | static int gen_key(struct opal_dev *dev, void *data) |
455a7b23 | 1123 | { |
455a7b23 | 1124 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1125 | int err; |
455a7b23 SB |
1126 | |
1127 | memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len)); | |
455a7b23 SB |
1128 | kfree(dev->prev_data); |
1129 | dev->prev_data = NULL; | |
1130 | ||
e8b29224 | 1131 | err = cmd_start(dev, uid, opalmethod[OPAL_GENKEY]); |
455a7b23 SB |
1132 | |
1133 | if (err) { | |
591c59d1 | 1134 | pr_debug("Error building gen key command\n"); |
455a7b23 SB |
1135 | return err; |
1136 | ||
1137 | } | |
1138 | return finalize_and_send(dev, parse_and_check_status); | |
1139 | } | |
1140 | ||
1141 | static int get_active_key_cont(struct opal_dev *dev) | |
1142 | { | |
1143 | const char *activekey; | |
1144 | size_t keylen; | |
1145 | int error = 0; | |
1146 | ||
1147 | error = parse_and_check_status(dev); | |
1148 | if (error) | |
1149 | return error; | |
1150 | keylen = response_get_string(&dev->parsed, 4, &activekey); | |
1151 | if (!activekey) { | |
591c59d1 SB |
1152 | pr_debug("%s: Couldn't extract the Activekey from the response\n", |
1153 | __func__); | |
455a7b23 SB |
1154 | return OPAL_INVAL_PARAM; |
1155 | } | |
1156 | dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL); | |
1157 | ||
1158 | if (!dev->prev_data) | |
1159 | return -ENOMEM; | |
1160 | ||
1161 | dev->prev_d_len = keylen; | |
1162 | ||
1163 | return 0; | |
1164 | } | |
1165 | ||
eed64951 | 1166 | static int get_active_key(struct opal_dev *dev, void *data) |
455a7b23 SB |
1167 | { |
1168 | u8 uid[OPAL_UID_LENGTH]; | |
e8b29224 | 1169 | int err; |
eed64951 | 1170 | u8 *lr = data; |
455a7b23 | 1171 | |
455a7b23 SB |
1172 | err = build_locking_range(uid, sizeof(uid), *lr); |
1173 | if (err) | |
1174 | return err; | |
1175 | ||
3fff234b DK |
1176 | err = generic_get_column(dev, uid, OPAL_ACTIVEKEY); |
1177 | if (err) | |
455a7b23 | 1178 | return err; |
455a7b23 | 1179 | |
3fff234b | 1180 | return get_active_key_cont(dev); |
455a7b23 SB |
1181 | } |
1182 | ||
1183 | static int generic_lr_enable_disable(struct opal_dev *dev, | |
1184 | u8 *uid, bool rle, bool wle, | |
1185 | bool rl, bool wl) | |
1186 | { | |
e8b29224 | 1187 | int err; |
455a7b23 | 1188 | |
e8b29224 | 1189 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 | 1190 | |
455a7b23 SB |
1191 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1192 | add_token_u8(&err, dev, OPAL_VALUES); | |
1193 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1194 | ||
1195 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1196 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
455a7b23 SB |
1197 | add_token_u8(&err, dev, rle); |
1198 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1199 | ||
1200 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1201 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
455a7b23 SB |
1202 | add_token_u8(&err, dev, wle); |
1203 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1204 | ||
1205 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1206 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1207 | add_token_u8(&err, dev, rl); | |
1208 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1209 | ||
1210 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1211 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1212 | add_token_u8(&err, dev, wl); | |
1213 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1214 | ||
1215 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1216 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1217 | return err; |
1218 | } | |
1219 | ||
1220 | static inline int enable_global_lr(struct opal_dev *dev, u8 *uid, | |
1221 | struct opal_user_lr_setup *setup) | |
1222 | { | |
1223 | int err; | |
1224 | ||
1225 | err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE, | |
1226 | 0, 0); | |
1227 | if (err) | |
591c59d1 | 1228 | pr_debug("Failed to create enable global lr command\n"); |
455a7b23 SB |
1229 | return err; |
1230 | } | |
1231 | ||
eed64951 | 1232 | static int setup_locking_range(struct opal_dev *dev, void *data) |
455a7b23 SB |
1233 | { |
1234 | u8 uid[OPAL_UID_LENGTH]; | |
eed64951 | 1235 | struct opal_user_lr_setup *setup = data; |
455a7b23 | 1236 | u8 lr; |
e8b29224 | 1237 | int err; |
455a7b23 | 1238 | |
455a7b23 SB |
1239 | lr = setup->session.opal_key.lr; |
1240 | err = build_locking_range(uid, sizeof(uid), lr); | |
1241 | if (err) | |
1242 | return err; | |
1243 | ||
1244 | if (lr == 0) | |
1245 | err = enable_global_lr(dev, uid, setup); | |
1246 | else { | |
e8b29224 | 1247 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 | 1248 | |
455a7b23 SB |
1249 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1250 | add_token_u8(&err, dev, OPAL_VALUES); | |
1251 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1252 | ||
1253 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1254 | add_token_u8(&err, dev, OPAL_RANGESTART); |
455a7b23 SB |
1255 | add_token_u64(&err, dev, setup->range_start); |
1256 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1257 | ||
1258 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1259 | add_token_u8(&err, dev, OPAL_RANGELENGTH); |
455a7b23 SB |
1260 | add_token_u64(&err, dev, setup->range_length); |
1261 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1262 | ||
1263 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1264 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
455a7b23 SB |
1265 | add_token_u64(&err, dev, !!setup->RLE); |
1266 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1267 | ||
1268 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1269 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
455a7b23 SB |
1270 | add_token_u64(&err, dev, !!setup->WLE); |
1271 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1272 | ||
1273 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1274 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1275 | } |
1276 | if (err) { | |
591c59d1 | 1277 | pr_debug("Error building Setup Locking range command.\n"); |
455a7b23 SB |
1278 | return err; |
1279 | ||
1280 | } | |
1281 | ||
1282 | return finalize_and_send(dev, parse_and_check_status); | |
1283 | } | |
1284 | ||
1285 | static int start_generic_opal_session(struct opal_dev *dev, | |
1286 | enum opal_uid auth, | |
1287 | enum opal_uid sp_type, | |
1288 | const char *key, | |
1289 | u8 key_len) | |
1290 | { | |
1291 | u32 hsn; | |
e8b29224 | 1292 | int err; |
455a7b23 | 1293 | |
591c59d1 | 1294 | if (key == NULL && auth != OPAL_ANYBODY_UID) |
455a7b23 | 1295 | return OPAL_INVAL_PARAM; |
455a7b23 | 1296 | |
455a7b23 | 1297 | hsn = GENERIC_HOST_SESSION_NUM; |
e8b29224 DK |
1298 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], |
1299 | opalmethod[OPAL_STARTSESSION]); | |
455a7b23 | 1300 | |
455a7b23 SB |
1301 | add_token_u64(&err, dev, hsn); |
1302 | add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH); | |
1303 | add_token_u8(&err, dev, 1); | |
1304 | ||
1305 | switch (auth) { | |
1306 | case OPAL_ANYBODY_UID: | |
455a7b23 SB |
1307 | break; |
1308 | case OPAL_ADMIN1_UID: | |
1309 | case OPAL_SID_UID: | |
1310 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1311 | add_token_u8(&err, dev, 0); /* HostChallenge */ | |
1312 | add_token_bytestring(&err, dev, key, key_len); | |
1313 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1314 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1315 | add_token_u8(&err, dev, 3); /* HostSignAuth */ | |
1316 | add_token_bytestring(&err, dev, opaluid[auth], | |
1317 | OPAL_UID_LENGTH); | |
1318 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1319 | break; |
1320 | default: | |
591c59d1 | 1321 | pr_debug("Cannot start Admin SP session with auth %d\n", auth); |
455a7b23 SB |
1322 | return OPAL_INVAL_PARAM; |
1323 | } | |
1324 | ||
1325 | if (err) { | |
591c59d1 | 1326 | pr_debug("Error building start adminsp session command.\n"); |
455a7b23 SB |
1327 | return err; |
1328 | } | |
1329 | ||
1330 | return finalize_and_send(dev, start_opal_session_cont); | |
1331 | } | |
1332 | ||
eed64951 | 1333 | static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1334 | { |
1335 | return start_generic_opal_session(dev, OPAL_ANYBODY_UID, | |
1336 | OPAL_ADMINSP_UID, NULL, 0); | |
1337 | } | |
1338 | ||
eed64951 | 1339 | static int start_SIDASP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1340 | { |
1341 | int ret; | |
1342 | const u8 *key = dev->prev_data; | |
455a7b23 SB |
1343 | |
1344 | if (!key) { | |
eed64951 | 1345 | const struct opal_key *okey = data; |
1e815b33 | 1346 | |
455a7b23 SB |
1347 | ret = start_generic_opal_session(dev, OPAL_SID_UID, |
1348 | OPAL_ADMINSP_UID, | |
1349 | okey->key, | |
1350 | okey->key_len); | |
1351 | } else { | |
1352 | ret = start_generic_opal_session(dev, OPAL_SID_UID, | |
1353 | OPAL_ADMINSP_UID, | |
1354 | key, dev->prev_d_len); | |
1355 | kfree(key); | |
1356 | dev->prev_data = NULL; | |
1357 | } | |
1358 | return ret; | |
1359 | } | |
1360 | ||
eed64951 | 1361 | static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 | 1362 | { |
eed64951 | 1363 | struct opal_key *key = data; |
1e815b33 | 1364 | |
455a7b23 SB |
1365 | return start_generic_opal_session(dev, OPAL_ADMIN1_UID, |
1366 | OPAL_LOCKINGSP_UID, | |
1367 | key->key, key->key_len); | |
1368 | } | |
1369 | ||
eed64951 | 1370 | static int start_auth_opal_session(struct opal_dev *dev, void *data) |
455a7b23 | 1371 | { |
eed64951 | 1372 | struct opal_session_info *session = data; |
455a7b23 | 1373 | u8 lk_ul_user[OPAL_UID_LENGTH]; |
eed64951 | 1374 | size_t keylen = session->opal_key.key_len; |
455a7b23 SB |
1375 | int err = 0; |
1376 | ||
455a7b23 SB |
1377 | u8 *key = session->opal_key.key; |
1378 | u32 hsn = GENERIC_HOST_SESSION_NUM; | |
1379 | ||
e8b29224 | 1380 | if (session->sum) |
455a7b23 SB |
1381 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
1382 | session->opal_key.lr); | |
e8b29224 | 1383 | else if (session->who != OPAL_ADMIN1 && !session->sum) |
455a7b23 SB |
1384 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
1385 | session->who - 1); | |
e8b29224 | 1386 | else |
455a7b23 SB |
1387 | memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH); |
1388 | ||
e8b29224 DK |
1389 | if (err) |
1390 | return err; | |
1391 | ||
1392 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], | |
1393 | opalmethod[OPAL_STARTSESSION]); | |
455a7b23 | 1394 | |
455a7b23 SB |
1395 | add_token_u64(&err, dev, hsn); |
1396 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], | |
1397 | OPAL_UID_LENGTH); | |
1398 | add_token_u8(&err, dev, 1); | |
1399 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1400 | add_token_u8(&err, dev, 0); | |
1401 | add_token_bytestring(&err, dev, key, keylen); | |
1402 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1403 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1404 | add_token_u8(&err, dev, 3); | |
1405 | add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH); | |
1406 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1407 | |
1408 | if (err) { | |
591c59d1 | 1409 | pr_debug("Error building STARTSESSION command.\n"); |
455a7b23 SB |
1410 | return err; |
1411 | } | |
1412 | ||
1413 | return finalize_and_send(dev, start_opal_session_cont); | |
1414 | } | |
1415 | ||
eed64951 | 1416 | static int revert_tper(struct opal_dev *dev, void *data) |
455a7b23 | 1417 | { |
e8b29224 | 1418 | int err; |
455a7b23 | 1419 | |
e8b29224 DK |
1420 | err = cmd_start(dev, opaluid[OPAL_ADMINSP_UID], |
1421 | opalmethod[OPAL_REVERT]); | |
455a7b23 | 1422 | if (err) { |
591c59d1 | 1423 | pr_debug("Error building REVERT TPER command.\n"); |
455a7b23 SB |
1424 | return err; |
1425 | } | |
1426 | ||
1427 | return finalize_and_send(dev, parse_and_check_status); | |
1428 | } | |
1429 | ||
eed64951 | 1430 | static int internal_activate_user(struct opal_dev *dev, void *data) |
455a7b23 | 1431 | { |
eed64951 | 1432 | struct opal_session_info *session = data; |
455a7b23 | 1433 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1434 | int err; |
455a7b23 SB |
1435 | |
1436 | memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1437 | uid[7] = session->who; | |
1438 | ||
e8b29224 | 1439 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 SB |
1440 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1441 | add_token_u8(&err, dev, OPAL_VALUES); | |
1442 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1443 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1444 | add_token_u8(&err, dev, 5); /* Enabled */ | |
1445 | add_token_u8(&err, dev, OPAL_TRUE); | |
1446 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1447 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1448 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1449 | |
1450 | if (err) { | |
591c59d1 | 1451 | pr_debug("Error building Activate UserN command.\n"); |
455a7b23 SB |
1452 | return err; |
1453 | } | |
1454 | ||
1455 | return finalize_and_send(dev, parse_and_check_status); | |
1456 | } | |
1457 | ||
eed64951 | 1458 | static int erase_locking_range(struct opal_dev *dev, void *data) |
455a7b23 | 1459 | { |
eed64951 | 1460 | struct opal_session_info *session = data; |
455a7b23 | 1461 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1462 | int err; |
455a7b23 SB |
1463 | |
1464 | if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0) | |
1465 | return -ERANGE; | |
1466 | ||
e8b29224 | 1467 | err = cmd_start(dev, uid, opalmethod[OPAL_ERASE]); |
455a7b23 SB |
1468 | |
1469 | if (err) { | |
591c59d1 | 1470 | pr_debug("Error building Erase Locking Range Command.\n"); |
455a7b23 SB |
1471 | return err; |
1472 | } | |
1473 | return finalize_and_send(dev, parse_and_check_status); | |
1474 | } | |
1475 | ||
eed64951 | 1476 | static int set_mbr_done(struct opal_dev *dev, void *data) |
455a7b23 | 1477 | { |
eed64951 | 1478 | u8 *mbr_done_tf = data; |
e8b29224 | 1479 | int err; |
455a7b23 | 1480 | |
e8b29224 DK |
1481 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
1482 | opalmethod[OPAL_SET]); | |
455a7b23 | 1483 | |
455a7b23 SB |
1484 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1485 | add_token_u8(&err, dev, OPAL_VALUES); | |
1486 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1487 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1488 | add_token_u8(&err, dev, OPAL_MBRDONE); |
eed64951 | 1489 | add_token_u8(&err, dev, *mbr_done_tf); /* Done T or F */ |
455a7b23 SB |
1490 | add_token_u8(&err, dev, OPAL_ENDNAME); |
1491 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1492 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1493 | |
1494 | if (err) { | |
591c59d1 | 1495 | pr_debug("Error Building set MBR Done command\n"); |
455a7b23 SB |
1496 | return err; |
1497 | } | |
1498 | ||
1499 | return finalize_and_send(dev, parse_and_check_status); | |
1500 | } | |
1501 | ||
eed64951 | 1502 | static int set_mbr_enable_disable(struct opal_dev *dev, void *data) |
455a7b23 | 1503 | { |
eed64951 | 1504 | u8 *mbr_en_dis = data; |
e8b29224 | 1505 | int err; |
455a7b23 | 1506 | |
e8b29224 DK |
1507 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
1508 | opalmethod[OPAL_SET]); | |
455a7b23 | 1509 | |
455a7b23 SB |
1510 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1511 | add_token_u8(&err, dev, OPAL_VALUES); | |
1512 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1513 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1514 | add_token_u8(&err, dev, OPAL_MBRENABLE); |
eed64951 | 1515 | add_token_u8(&err, dev, *mbr_en_dis); |
455a7b23 SB |
1516 | add_token_u8(&err, dev, OPAL_ENDNAME); |
1517 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1518 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1519 | |
1520 | if (err) { | |
591c59d1 | 1521 | pr_debug("Error Building set MBR done command\n"); |
455a7b23 SB |
1522 | return err; |
1523 | } | |
1524 | ||
1525 | return finalize_and_send(dev, parse_and_check_status); | |
1526 | } | |
1527 | ||
1528 | static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid, | |
1529 | struct opal_dev *dev) | |
1530 | { | |
e8b29224 | 1531 | int err; |
455a7b23 | 1532 | |
e8b29224 | 1533 | err = cmd_start(dev, cpin_uid, opalmethod[OPAL_SET]); |
455a7b23 | 1534 | |
455a7b23 SB |
1535 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1536 | add_token_u8(&err, dev, OPAL_VALUES); | |
1537 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1538 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1539 | add_token_u8(&err, dev, OPAL_PIN); |
455a7b23 SB |
1540 | add_token_bytestring(&err, dev, key, key_len); |
1541 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1542 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1543 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1544 | |
1545 | return err; | |
1546 | } | |
1547 | ||
eed64951 | 1548 | static int set_new_pw(struct opal_dev *dev, void *data) |
455a7b23 SB |
1549 | { |
1550 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1551 | struct opal_session_info *usr = data; |
455a7b23 SB |
1552 | |
1553 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH); | |
1554 | ||
1555 | if (usr->who != OPAL_ADMIN1) { | |
1556 | cpin_uid[5] = 0x03; | |
1557 | if (usr->sum) | |
1558 | cpin_uid[7] = usr->opal_key.lr + 1; | |
1559 | else | |
1560 | cpin_uid[7] = usr->who; | |
1561 | } | |
1562 | ||
1563 | if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len, | |
1564 | cpin_uid, dev)) { | |
591c59d1 | 1565 | pr_debug("Error building set password command.\n"); |
455a7b23 SB |
1566 | return -ERANGE; |
1567 | } | |
1568 | ||
1569 | return finalize_and_send(dev, parse_and_check_status); | |
1570 | } | |
1571 | ||
eed64951 | 1572 | static int set_sid_cpin_pin(struct opal_dev *dev, void *data) |
455a7b23 SB |
1573 | { |
1574 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1575 | struct opal_key *key = data; |
455a7b23 SB |
1576 | |
1577 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH); | |
1578 | ||
1579 | if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) { | |
591c59d1 | 1580 | pr_debug("Error building Set SID cpin\n"); |
455a7b23 SB |
1581 | return -ERANGE; |
1582 | } | |
1583 | return finalize_and_send(dev, parse_and_check_status); | |
1584 | } | |
1585 | ||
eed64951 | 1586 | static int add_user_to_lr(struct opal_dev *dev, void *data) |
455a7b23 SB |
1587 | { |
1588 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1589 | u8 user_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1590 | struct opal_lock_unlock *lkul = data; |
e8b29224 | 1591 | int err; |
455a7b23 | 1592 | |
455a7b23 SB |
1593 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED], |
1594 | OPAL_UID_LENGTH); | |
1595 | ||
1596 | if (lkul->l_state == OPAL_RW) | |
1597 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED], | |
1598 | OPAL_UID_LENGTH); | |
1599 | ||
1600 | lr_buffer[7] = lkul->session.opal_key.lr; | |
1601 | ||
1602 | memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1603 | ||
1604 | user_uid[7] = lkul->session.who; | |
1605 | ||
e8b29224 | 1606 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
455a7b23 | 1607 | |
455a7b23 SB |
1608 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1609 | add_token_u8(&err, dev, OPAL_VALUES); | |
1610 | ||
1611 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1612 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1613 | add_token_u8(&err, dev, 3); | |
1614 | ||
1615 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1616 | ||
1617 | ||
1618 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1619 | add_token_bytestring(&err, dev, | |
1620 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1621 | OPAL_UID_LENGTH/2); | |
1622 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1623 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1624 | ||
1625 | ||
1626 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1627 | add_token_bytestring(&err, dev, | |
1628 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1629 | OPAL_UID_LENGTH/2); | |
1630 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1631 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1632 | ||
1633 | ||
1634 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1635 | add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE], | |
1636 | OPAL_UID_LENGTH/2); | |
1637 | add_token_u8(&err, dev, 1); | |
1638 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1639 | ||
1640 | ||
1641 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1642 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1643 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1644 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1645 | |
1646 | if (err) { | |
591c59d1 | 1647 | pr_debug("Error building add user to locking range command.\n"); |
455a7b23 SB |
1648 | return err; |
1649 | } | |
1650 | ||
1651 | return finalize_and_send(dev, parse_and_check_status); | |
1652 | } | |
1653 | ||
eed64951 | 1654 | static int lock_unlock_locking_range(struct opal_dev *dev, void *data) |
455a7b23 SB |
1655 | { |
1656 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
eed64951 | 1657 | struct opal_lock_unlock *lkul = data; |
455a7b23 SB |
1658 | u8 read_locked = 1, write_locked = 1; |
1659 | int err = 0; | |
1660 | ||
455a7b23 SB |
1661 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
1662 | lkul->session.opal_key.lr) < 0) | |
1663 | return -ERANGE; | |
1664 | ||
1665 | switch (lkul->l_state) { | |
1666 | case OPAL_RO: | |
1667 | read_locked = 0; | |
1668 | write_locked = 1; | |
1669 | break; | |
1670 | case OPAL_RW: | |
1671 | read_locked = 0; | |
1672 | write_locked = 0; | |
1673 | break; | |
1674 | case OPAL_LK: | |
1e815b33 | 1675 | /* vars are initialized to locked */ |
455a7b23 SB |
1676 | break; |
1677 | default: | |
591c59d1 | 1678 | pr_debug("Tried to set an invalid locking state... returning to uland\n"); |
455a7b23 SB |
1679 | return OPAL_INVAL_PARAM; |
1680 | } | |
1681 | ||
e8b29224 DK |
1682 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
1683 | ||
455a7b23 SB |
1684 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1685 | add_token_u8(&err, dev, OPAL_VALUES); | |
1686 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1687 | ||
1688 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1689 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1690 | add_token_u8(&err, dev, read_locked); | |
1691 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1692 | ||
1693 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1694 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1695 | add_token_u8(&err, dev, write_locked); | |
1696 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1697 | ||
1698 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1699 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1700 | |
1701 | if (err) { | |
591c59d1 | 1702 | pr_debug("Error building SET command.\n"); |
455a7b23 SB |
1703 | return err; |
1704 | } | |
1705 | return finalize_and_send(dev, parse_and_check_status); | |
1706 | } | |
1707 | ||
1708 | ||
eed64951 | 1709 | static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data) |
455a7b23 SB |
1710 | { |
1711 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1712 | u8 read_locked = 1, write_locked = 1; | |
eed64951 | 1713 | struct opal_lock_unlock *lkul = data; |
455a7b23 SB |
1714 | int ret; |
1715 | ||
1716 | clear_opal_cmd(dev); | |
1717 | set_comid(dev, dev->comid); | |
1718 | ||
455a7b23 SB |
1719 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
1720 | lkul->session.opal_key.lr) < 0) | |
1721 | return -ERANGE; | |
1722 | ||
1723 | switch (lkul->l_state) { | |
1724 | case OPAL_RO: | |
1725 | read_locked = 0; | |
1726 | write_locked = 1; | |
1727 | break; | |
1728 | case OPAL_RW: | |
1729 | read_locked = 0; | |
1730 | write_locked = 0; | |
1731 | break; | |
1732 | case OPAL_LK: | |
1e815b33 | 1733 | /* vars are initialized to locked */ |
455a7b23 SB |
1734 | break; |
1735 | default: | |
591c59d1 | 1736 | pr_debug("Tried to set an invalid locking state.\n"); |
455a7b23 SB |
1737 | return OPAL_INVAL_PARAM; |
1738 | } | |
1739 | ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1, | |
1740 | read_locked, write_locked); | |
1741 | ||
1742 | if (ret < 0) { | |
591c59d1 | 1743 | pr_debug("Error building SET command.\n"); |
455a7b23 SB |
1744 | return ret; |
1745 | } | |
1746 | return finalize_and_send(dev, parse_and_check_status); | |
1747 | } | |
1748 | ||
eed64951 | 1749 | static int activate_lsp(struct opal_dev *dev, void *data) |
455a7b23 | 1750 | { |
eed64951 | 1751 | struct opal_lr_act *opal_act = data; |
455a7b23 SB |
1752 | u8 user_lr[OPAL_UID_LENGTH]; |
1753 | u8 uint_3 = 0x83; | |
e8b29224 | 1754 | int err, i; |
455a7b23 | 1755 | |
e8b29224 DK |
1756 | err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID], |
1757 | opalmethod[OPAL_ACTIVATE]); | |
455a7b23 SB |
1758 | |
1759 | if (opal_act->sum) { | |
1760 | err = build_locking_range(user_lr, sizeof(user_lr), | |
1761 | opal_act->lr[0]); | |
1762 | if (err) | |
1763 | return err; | |
1764 | ||
455a7b23 SB |
1765 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1766 | add_token_u8(&err, dev, uint_3); | |
1767 | add_token_u8(&err, dev, 6); | |
1768 | add_token_u8(&err, dev, 0); | |
1769 | add_token_u8(&err, dev, 0); | |
1770 | ||
1771 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1772 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1773 | for (i = 1; i < opal_act->num_lrs; i++) { | |
1774 | user_lr[7] = opal_act->lr[i]; | |
1775 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1776 | } | |
1777 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1778 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1779 | } |
1780 | ||
1781 | if (err) { | |
591c59d1 | 1782 | pr_debug("Error building Activate LockingSP command.\n"); |
455a7b23 SB |
1783 | return err; |
1784 | } | |
1785 | ||
1786 | return finalize_and_send(dev, parse_and_check_status); | |
1787 | } | |
1788 | ||
3fff234b DK |
1789 | /* Determine if we're in the Manufactured Inactive or Active state */ |
1790 | static int get_lsp_lifecycle(struct opal_dev *dev, void *data) | |
455a7b23 SB |
1791 | { |
1792 | u8 lc_status; | |
3fff234b | 1793 | int err; |
455a7b23 | 1794 | |
3fff234b DK |
1795 | err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID], |
1796 | OPAL_LIFECYCLE); | |
1797 | if (err) | |
1798 | return err; | |
455a7b23 SB |
1799 | |
1800 | lc_status = response_get_u64(&dev->parsed, 4); | |
1e815b33 | 1801 | /* 0x08 is Manufactured Inactive */ |
455a7b23 SB |
1802 | /* 0x09 is Manufactured */ |
1803 | if (lc_status != OPAL_MANUFACTURED_INACTIVE) { | |
591c59d1 | 1804 | pr_debug("Couldn't determine the status of the Lifecycle state\n"); |
455a7b23 SB |
1805 | return -ENODEV; |
1806 | } | |
1807 | ||
1808 | return 0; | |
1809 | } | |
1810 | ||
3fff234b | 1811 | static int get_msid_cpin_pin(struct opal_dev *dev, void *data) |
455a7b23 SB |
1812 | { |
1813 | const char *msid_pin; | |
1814 | size_t strlen; | |
3fff234b | 1815 | int err; |
455a7b23 | 1816 | |
3fff234b DK |
1817 | err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN); |
1818 | if (err) | |
1819 | return err; | |
455a7b23 SB |
1820 | |
1821 | strlen = response_get_string(&dev->parsed, 4, &msid_pin); | |
1822 | if (!msid_pin) { | |
3fff234b | 1823 | pr_debug("Couldn't extract MSID_CPIN from response\n"); |
455a7b23 SB |
1824 | return OPAL_INVAL_PARAM; |
1825 | } | |
1826 | ||
1827 | dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL); | |
1828 | if (!dev->prev_data) | |
1829 | return -ENOMEM; | |
1830 | ||
1831 | dev->prev_d_len = strlen; | |
1832 | ||
1833 | return 0; | |
1834 | } | |
1835 | ||
eed64951 | 1836 | static int end_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1837 | { |
1838 | int err = 0; | |
1839 | ||
1840 | clear_opal_cmd(dev); | |
455a7b23 SB |
1841 | set_comid(dev, dev->comid); |
1842 | add_token_u8(&err, dev, OPAL_ENDOFSESSION); | |
455a7b23 | 1843 | |
eed64951 JD |
1844 | if (err < 0) |
1845 | return err; | |
455a7b23 SB |
1846 | return finalize_and_send(dev, end_session_cont); |
1847 | } | |
1848 | ||
1849 | static int end_opal_session_error(struct opal_dev *dev) | |
1850 | { | |
0af2648e DK |
1851 | const struct opal_step error_end_session = { |
1852 | end_opal_session, | |
455a7b23 | 1853 | }; |
0af2648e | 1854 | return execute_step(dev, &error_end_session, 0); |
455a7b23 SB |
1855 | } |
1856 | ||
3db87236 | 1857 | static inline void setup_opal_dev(struct opal_dev *dev) |
455a7b23 | 1858 | { |
455a7b23 SB |
1859 | dev->tsn = 0; |
1860 | dev->hsn = 0; | |
455a7b23 SB |
1861 | dev->prev_data = NULL; |
1862 | } | |
1863 | ||
1864 | static int check_opal_support(struct opal_dev *dev) | |
1865 | { | |
455a7b23 SB |
1866 | int ret; |
1867 | ||
1868 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1869 | setup_opal_dev(dev); |
0af2648e | 1870 | ret = opal_discovery0_step(dev); |
455a7b23 SB |
1871 | dev->supported = !ret; |
1872 | mutex_unlock(&dev->dev_lock); | |
1873 | return ret; | |
1874 | } | |
1875 | ||
7d6d1578 SB |
1876 | static void clean_opal_dev(struct opal_dev *dev) |
1877 | { | |
1878 | ||
1879 | struct opal_suspend_data *suspend, *next; | |
1880 | ||
1881 | mutex_lock(&dev->dev_lock); | |
1882 | list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) { | |
1883 | list_del(&suspend->node); | |
1884 | kfree(suspend); | |
1885 | } | |
1886 | mutex_unlock(&dev->dev_lock); | |
1887 | } | |
1888 | ||
1889 | void free_opal_dev(struct opal_dev *dev) | |
1890 | { | |
1891 | if (!dev) | |
1892 | return; | |
1893 | clean_opal_dev(dev); | |
1894 | kfree(dev); | |
1895 | } | |
1896 | EXPORT_SYMBOL(free_opal_dev); | |
1897 | ||
4f1244c8 | 1898 | struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv) |
455a7b23 | 1899 | { |
4f1244c8 CH |
1900 | struct opal_dev *dev; |
1901 | ||
1902 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
1903 | if (!dev) | |
1904 | return NULL; | |
1905 | ||
1906 | INIT_LIST_HEAD(&dev->unlk_lst); | |
1907 | mutex_init(&dev->dev_lock); | |
1908 | dev->data = data; | |
1909 | dev->send_recv = send_recv; | |
1910 | if (check_opal_support(dev) != 0) { | |
f5b37b7c | 1911 | pr_debug("Opal is not supported on this device\n"); |
4f1244c8 CH |
1912 | kfree(dev); |
1913 | return NULL; | |
1914 | } | |
1915 | return dev; | |
455a7b23 SB |
1916 | } |
1917 | EXPORT_SYMBOL(init_opal_dev); | |
1918 | ||
1919 | static int opal_secure_erase_locking_range(struct opal_dev *dev, | |
1920 | struct opal_session_info *opal_session) | |
1921 | { | |
eed64951 | 1922 | const struct opal_step erase_steps[] = { |
eed64951 JD |
1923 | { start_auth_opal_session, opal_session }, |
1924 | { get_active_key, &opal_session->opal_key.lr }, | |
1925 | { gen_key, }, | |
3db87236 | 1926 | { end_opal_session, } |
455a7b23 SB |
1927 | }; |
1928 | int ret; | |
1929 | ||
1930 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1931 | setup_opal_dev(dev); |
a80f36cc | 1932 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
455a7b23 SB |
1933 | mutex_unlock(&dev->dev_lock); |
1934 | return ret; | |
1935 | } | |
1936 | ||
1937 | static int opal_erase_locking_range(struct opal_dev *dev, | |
1938 | struct opal_session_info *opal_session) | |
1939 | { | |
eed64951 | 1940 | const struct opal_step erase_steps[] = { |
eed64951 JD |
1941 | { start_auth_opal_session, opal_session }, |
1942 | { erase_locking_range, opal_session }, | |
3db87236 | 1943 | { end_opal_session, } |
455a7b23 SB |
1944 | }; |
1945 | int ret; | |
1946 | ||
1947 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1948 | setup_opal_dev(dev); |
a80f36cc | 1949 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
455a7b23 SB |
1950 | mutex_unlock(&dev->dev_lock); |
1951 | return ret; | |
1952 | } | |
1953 | ||
1954 | static int opal_enable_disable_shadow_mbr(struct opal_dev *dev, | |
1955 | struct opal_mbr_data *opal_mbr) | |
1956 | { | |
78bf4735 DK |
1957 | u8 enable_disable = opal_mbr->enable_disable == OPAL_MBR_ENABLE ? |
1958 | OPAL_TRUE : OPAL_FALSE; | |
1959 | ||
eed64951 | 1960 | const struct opal_step mbr_steps[] = { |
eed64951 | 1961 | { start_admin1LSP_opal_session, &opal_mbr->key }, |
78bf4735 | 1962 | { set_mbr_done, &enable_disable }, |
eed64951 JD |
1963 | { end_opal_session, }, |
1964 | { start_admin1LSP_opal_session, &opal_mbr->key }, | |
78bf4735 | 1965 | { set_mbr_enable_disable, &enable_disable }, |
3db87236 | 1966 | { end_opal_session, } |
455a7b23 SB |
1967 | }; |
1968 | int ret; | |
1969 | ||
1970 | if (opal_mbr->enable_disable != OPAL_MBR_ENABLE && | |
1971 | opal_mbr->enable_disable != OPAL_MBR_DISABLE) | |
1972 | return -EINVAL; | |
1973 | ||
1974 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1975 | setup_opal_dev(dev); |
a80f36cc | 1976 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); |
455a7b23 SB |
1977 | mutex_unlock(&dev->dev_lock); |
1978 | return ret; | |
1979 | } | |
1980 | ||
1981 | static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) | |
1982 | { | |
1983 | struct opal_suspend_data *suspend; | |
1984 | ||
1985 | suspend = kzalloc(sizeof(*suspend), GFP_KERNEL); | |
1986 | if (!suspend) | |
1987 | return -ENOMEM; | |
1988 | ||
1989 | suspend->unlk = *lk_unlk; | |
1990 | suspend->lr = lk_unlk->session.opal_key.lr; | |
1991 | ||
1992 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1993 | setup_opal_dev(dev); |
455a7b23 SB |
1994 | add_suspend_info(dev, suspend); |
1995 | mutex_unlock(&dev->dev_lock); | |
1996 | return 0; | |
1997 | } | |
1998 | ||
1999 | static int opal_add_user_to_lr(struct opal_dev *dev, | |
2000 | struct opal_lock_unlock *lk_unlk) | |
2001 | { | |
eed64951 | 2002 | const struct opal_step steps[] = { |
eed64951 JD |
2003 | { start_admin1LSP_opal_session, &lk_unlk->session.opal_key }, |
2004 | { add_user_to_lr, lk_unlk }, | |
3db87236 | 2005 | { end_opal_session, } |
455a7b23 SB |
2006 | }; |
2007 | int ret; | |
2008 | ||
2009 | if (lk_unlk->l_state != OPAL_RO && | |
2010 | lk_unlk->l_state != OPAL_RW) { | |
591c59d1 | 2011 | pr_debug("Locking state was not RO or RW\n"); |
455a7b23 SB |
2012 | return -EINVAL; |
2013 | } | |
b0bfdfc2 | 2014 | if (lk_unlk->session.who < OPAL_USER1 || |
455a7b23 | 2015 | lk_unlk->session.who > OPAL_USER9) { |
591c59d1 SB |
2016 | pr_debug("Authority was not within the range of users: %d\n", |
2017 | lk_unlk->session.who); | |
455a7b23 SB |
2018 | return -EINVAL; |
2019 | } | |
2020 | if (lk_unlk->session.sum) { | |
591c59d1 SB |
2021 | pr_debug("%s not supported in sum. Use setup locking range\n", |
2022 | __func__); | |
455a7b23 SB |
2023 | return -EINVAL; |
2024 | } | |
2025 | ||
2026 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2027 | setup_opal_dev(dev); |
a80f36cc | 2028 | ret = execute_steps(dev, steps, ARRAY_SIZE(steps)); |
455a7b23 SB |
2029 | mutex_unlock(&dev->dev_lock); |
2030 | return ret; | |
2031 | } | |
2032 | ||
2033 | static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal) | |
2034 | { | |
eed64951 | 2035 | const struct opal_step revert_steps[] = { |
eed64951 | 2036 | { start_SIDASP_opal_session, opal }, |
3db87236 | 2037 | { revert_tper, } /* controller will terminate session */ |
455a7b23 SB |
2038 | }; |
2039 | int ret; | |
2040 | ||
2041 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2042 | setup_opal_dev(dev); |
a80f36cc | 2043 | ret = execute_steps(dev, revert_steps, ARRAY_SIZE(revert_steps)); |
455a7b23 | 2044 | mutex_unlock(&dev->dev_lock); |
7d6d1578 SB |
2045 | |
2046 | /* | |
2047 | * If we successfully reverted lets clean | |
2048 | * any saved locking ranges. | |
2049 | */ | |
2050 | if (!ret) | |
2051 | clean_opal_dev(dev); | |
2052 | ||
455a7b23 SB |
2053 | return ret; |
2054 | } | |
2055 | ||
eed64951 JD |
2056 | static int __opal_lock_unlock(struct opal_dev *dev, |
2057 | struct opal_lock_unlock *lk_unlk) | |
455a7b23 | 2058 | { |
eed64951 | 2059 | const struct opal_step unlock_steps[] = { |
eed64951 JD |
2060 | { start_auth_opal_session, &lk_unlk->session }, |
2061 | { lock_unlock_locking_range, lk_unlk }, | |
3db87236 | 2062 | { end_opal_session, } |
455a7b23 | 2063 | }; |
eed64951 | 2064 | const struct opal_step unlock_sum_steps[] = { |
eed64951 JD |
2065 | { start_auth_opal_session, &lk_unlk->session }, |
2066 | { lock_unlock_locking_range_sum, lk_unlk }, | |
3db87236 | 2067 | { end_opal_session, } |
455a7b23 SB |
2068 | }; |
2069 | ||
3db87236 | 2070 | if (lk_unlk->session.sum) |
a80f36cc DK |
2071 | return execute_steps(dev, unlock_sum_steps, |
2072 | ARRAY_SIZE(unlock_sum_steps)); | |
3db87236 | 2073 | else |
a80f36cc DK |
2074 | return execute_steps(dev, unlock_steps, |
2075 | ARRAY_SIZE(unlock_steps)); | |
455a7b23 SB |
2076 | } |
2077 | ||
dbec491b SB |
2078 | static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key) |
2079 | { | |
78bf4735 | 2080 | u8 mbr_done_tf = OPAL_TRUE; |
1e815b33 | 2081 | const struct opal_step mbrdone_step[] = { |
dbec491b SB |
2082 | { start_admin1LSP_opal_session, key }, |
2083 | { set_mbr_done, &mbr_done_tf }, | |
3db87236 | 2084 | { end_opal_session, } |
dbec491b SB |
2085 | }; |
2086 | ||
a80f36cc | 2087 | return execute_steps(dev, mbrdone_step, ARRAY_SIZE(mbrdone_step)); |
dbec491b SB |
2088 | } |
2089 | ||
eed64951 JD |
2090 | static int opal_lock_unlock(struct opal_dev *dev, |
2091 | struct opal_lock_unlock *lk_unlk) | |
455a7b23 | 2092 | { |
455a7b23 SB |
2093 | int ret; |
2094 | ||
2095 | if (lk_unlk->session.who < OPAL_ADMIN1 || | |
2096 | lk_unlk->session.who > OPAL_USER9) | |
2097 | return -EINVAL; | |
2098 | ||
2099 | mutex_lock(&dev->dev_lock); | |
eed64951 | 2100 | ret = __opal_lock_unlock(dev, lk_unlk); |
455a7b23 SB |
2101 | mutex_unlock(&dev->dev_lock); |
2102 | return ret; | |
2103 | } | |
2104 | ||
2105 | static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal) | |
2106 | { | |
eed64951 | 2107 | const struct opal_step owner_steps[] = { |
eed64951 JD |
2108 | { start_anybodyASP_opal_session, }, |
2109 | { get_msid_cpin_pin, }, | |
2110 | { end_opal_session, }, | |
2111 | { start_SIDASP_opal_session, opal }, | |
2112 | { set_sid_cpin_pin, opal }, | |
3db87236 | 2113 | { end_opal_session, } |
455a7b23 | 2114 | }; |
455a7b23 SB |
2115 | int ret; |
2116 | ||
2117 | if (!dev) | |
2118 | return -ENODEV; | |
2119 | ||
2120 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2121 | setup_opal_dev(dev); |
a80f36cc | 2122 | ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps)); |
455a7b23 SB |
2123 | mutex_unlock(&dev->dev_lock); |
2124 | return ret; | |
2125 | } | |
2126 | ||
1e815b33 DK |
2127 | static int opal_activate_lsp(struct opal_dev *dev, |
2128 | struct opal_lr_act *opal_lr_act) | |
455a7b23 | 2129 | { |
eed64951 | 2130 | const struct opal_step active_steps[] = { |
eed64951 JD |
2131 | { start_SIDASP_opal_session, &opal_lr_act->key }, |
2132 | { get_lsp_lifecycle, }, | |
2133 | { activate_lsp, opal_lr_act }, | |
3db87236 | 2134 | { end_opal_session, } |
455a7b23 SB |
2135 | }; |
2136 | int ret; | |
2137 | ||
2138 | if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS) | |
2139 | return -EINVAL; | |
2140 | ||
2141 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2142 | setup_opal_dev(dev); |
a80f36cc | 2143 | ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps)); |
455a7b23 SB |
2144 | mutex_unlock(&dev->dev_lock); |
2145 | return ret; | |
2146 | } | |
2147 | ||
2148 | static int opal_setup_locking_range(struct opal_dev *dev, | |
2149 | struct opal_user_lr_setup *opal_lrs) | |
2150 | { | |
eed64951 | 2151 | const struct opal_step lr_steps[] = { |
eed64951 JD |
2152 | { start_auth_opal_session, &opal_lrs->session }, |
2153 | { setup_locking_range, opal_lrs }, | |
3db87236 | 2154 | { end_opal_session, } |
455a7b23 SB |
2155 | }; |
2156 | int ret; | |
2157 | ||
2158 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2159 | setup_opal_dev(dev); |
a80f36cc | 2160 | ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps)); |
455a7b23 SB |
2161 | mutex_unlock(&dev->dev_lock); |
2162 | return ret; | |
2163 | } | |
2164 | ||
2165 | static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw) | |
2166 | { | |
eed64951 | 2167 | const struct opal_step pw_steps[] = { |
eed64951 JD |
2168 | { start_auth_opal_session, &opal_pw->session }, |
2169 | { set_new_pw, &opal_pw->new_user_pw }, | |
3db87236 | 2170 | { end_opal_session, } |
455a7b23 | 2171 | }; |
455a7b23 SB |
2172 | int ret; |
2173 | ||
2174 | if (opal_pw->session.who < OPAL_ADMIN1 || | |
2175 | opal_pw->session.who > OPAL_USER9 || | |
2176 | opal_pw->new_user_pw.who < OPAL_ADMIN1 || | |
2177 | opal_pw->new_user_pw.who > OPAL_USER9) | |
2178 | return -EINVAL; | |
2179 | ||
2180 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2181 | setup_opal_dev(dev); |
a80f36cc | 2182 | ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps)); |
455a7b23 SB |
2183 | mutex_unlock(&dev->dev_lock); |
2184 | return ret; | |
2185 | } | |
2186 | ||
2187 | static int opal_activate_user(struct opal_dev *dev, | |
2188 | struct opal_session_info *opal_session) | |
2189 | { | |
eed64951 | 2190 | const struct opal_step act_steps[] = { |
eed64951 JD |
2191 | { start_admin1LSP_opal_session, &opal_session->opal_key }, |
2192 | { internal_activate_user, opal_session }, | |
3db87236 | 2193 | { end_opal_session, } |
455a7b23 | 2194 | }; |
455a7b23 SB |
2195 | int ret; |
2196 | ||
2197 | /* We can't activate Admin1 it's active as manufactured */ | |
b0bfdfc2 | 2198 | if (opal_session->who < OPAL_USER1 || |
455a7b23 | 2199 | opal_session->who > OPAL_USER9) { |
591c59d1 | 2200 | pr_debug("Who was not a valid user: %d\n", opal_session->who); |
455a7b23 SB |
2201 | return -EINVAL; |
2202 | } | |
2203 | ||
2204 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2205 | setup_opal_dev(dev); |
a80f36cc | 2206 | ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps)); |
455a7b23 SB |
2207 | mutex_unlock(&dev->dev_lock); |
2208 | return ret; | |
2209 | } | |
2210 | ||
2211 | bool opal_unlock_from_suspend(struct opal_dev *dev) | |
2212 | { | |
2213 | struct opal_suspend_data *suspend; | |
455a7b23 SB |
2214 | bool was_failure = false; |
2215 | int ret = 0; | |
2216 | ||
2217 | if (!dev) | |
2218 | return false; | |
2219 | if (!dev->supported) | |
2220 | return false; | |
2221 | ||
2222 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2223 | setup_opal_dev(dev); |
455a7b23 SB |
2224 | |
2225 | list_for_each_entry(suspend, &dev->unlk_lst, node) { | |
455a7b23 SB |
2226 | dev->tsn = 0; |
2227 | dev->hsn = 0; | |
2228 | ||
eed64951 | 2229 | ret = __opal_lock_unlock(dev, &suspend->unlk); |
455a7b23 | 2230 | if (ret) { |
591c59d1 SB |
2231 | pr_debug("Failed to unlock LR %hhu with sum %d\n", |
2232 | suspend->unlk.session.opal_key.lr, | |
2233 | suspend->unlk.session.sum); | |
455a7b23 SB |
2234 | was_failure = true; |
2235 | } | |
dbec491b SB |
2236 | if (dev->mbr_enabled) { |
2237 | ret = __opal_set_mbr_done(dev, &suspend->unlk.session.opal_key); | |
2238 | if (ret) | |
2239 | pr_debug("Failed to set MBR Done in S3 resume\n"); | |
2240 | } | |
455a7b23 SB |
2241 | } |
2242 | mutex_unlock(&dev->dev_lock); | |
2243 | return was_failure; | |
2244 | } | |
2245 | EXPORT_SYMBOL(opal_unlock_from_suspend); | |
2246 | ||
e225c20e | 2247 | int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) |
455a7b23 | 2248 | { |
e225c20e SB |
2249 | void *p; |
2250 | int ret = -ENOTTY; | |
455a7b23 SB |
2251 | |
2252 | if (!capable(CAP_SYS_ADMIN)) | |
2253 | return -EACCES; | |
4f1244c8 CH |
2254 | if (!dev) |
2255 | return -ENOTSUPP; | |
591c59d1 | 2256 | if (!dev->supported) |
455a7b23 | 2257 | return -ENOTSUPP; |
455a7b23 | 2258 | |
eed64951 | 2259 | p = memdup_user(arg, _IOC_SIZE(cmd)); |
e225c20e SB |
2260 | if (IS_ERR(p)) |
2261 | return PTR_ERR(p); | |
455a7b23 | 2262 | |
e225c20e SB |
2263 | switch (cmd) { |
2264 | case IOC_OPAL_SAVE: | |
2265 | ret = opal_save(dev, p); | |
2266 | break; | |
2267 | case IOC_OPAL_LOCK_UNLOCK: | |
2268 | ret = opal_lock_unlock(dev, p); | |
2269 | break; | |
2270 | case IOC_OPAL_TAKE_OWNERSHIP: | |
2271 | ret = opal_take_ownership(dev, p); | |
2272 | break; | |
2273 | case IOC_OPAL_ACTIVATE_LSP: | |
2274 | ret = opal_activate_lsp(dev, p); | |
2275 | break; | |
2276 | case IOC_OPAL_SET_PW: | |
2277 | ret = opal_set_new_pw(dev, p); | |
2278 | break; | |
2279 | case IOC_OPAL_ACTIVATE_USR: | |
2280 | ret = opal_activate_user(dev, p); | |
2281 | break; | |
2282 | case IOC_OPAL_REVERT_TPR: | |
2283 | ret = opal_reverttper(dev, p); | |
2284 | break; | |
2285 | case IOC_OPAL_LR_SETUP: | |
2286 | ret = opal_setup_locking_range(dev, p); | |
2287 | break; | |
2288 | case IOC_OPAL_ADD_USR_TO_LR: | |
2289 | ret = opal_add_user_to_lr(dev, p); | |
2290 | break; | |
2291 | case IOC_OPAL_ENABLE_DISABLE_MBR: | |
2292 | ret = opal_enable_disable_shadow_mbr(dev, p); | |
2293 | break; | |
2294 | case IOC_OPAL_ERASE_LR: | |
2295 | ret = opal_erase_locking_range(dev, p); | |
2296 | break; | |
2297 | case IOC_OPAL_SECURE_ERASE_LR: | |
2298 | ret = opal_secure_erase_locking_range(dev, p); | |
2299 | break; | |
455a7b23 | 2300 | default: |
591c59d1 | 2301 | break; |
455a7b23 | 2302 | } |
e225c20e SB |
2303 | |
2304 | kfree(p); | |
2305 | return ret; | |
455a7b23 SB |
2306 | } |
2307 | EXPORT_SYMBOL_GPL(sed_ioctl); |