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