Commit | Line | Data |
---|---|---|
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 | ||
a9b25b4c JR |
29 | /* Number of bytes needed by cmd_finalize. */ |
30 | #define CMD_FINALIZE_BYTES_NEEDED 7 | |
31 | ||
eed64951 JD |
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); | |
4f1244c8 CH |
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; | |
dbec491b | 78 | bool mbr_enabled; |
4f1244c8 CH |
79 | |
80 | void *data; | |
81 | sec_send_recv *send_recv; | |
82 | ||
4f1244c8 CH |
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 | ||
455a7b23 SB |
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 | ||
ff91064e JR |
133 | [OPAL_TABLE_TABLE] |
134 | { 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 }, | |
455a7b23 SB |
135 | [OPAL_LOCKINGRANGE_GLOBAL] = |
136 | { 0x00, 0x00, 0x08, 0x02, 0x00, 0x00, 0x00, 0x01 }, | |
137 | [OPAL_LOCKINGRANGE_ACE_RDLOCKED] = | |
138 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE0, 0x01 }, | |
139 | [OPAL_LOCKINGRANGE_ACE_WRLOCKED] = | |
140 | { 0x00, 0x00, 0x00, 0x08, 0x00, 0x03, 0xE8, 0x01 }, | |
141 | [OPAL_MBRCONTROL] = | |
142 | { 0x00, 0x00, 0x08, 0x03, 0x00, 0x00, 0x00, 0x01 }, | |
143 | [OPAL_MBR] = | |
144 | { 0x00, 0x00, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00 }, | |
145 | [OPAL_AUTHORITY_TABLE] = | |
146 | { 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x00}, | |
147 | [OPAL_C_PIN_TABLE] = | |
148 | { 0x00, 0x00, 0x00, 0x0B, 0x00, 0x00, 0x00, 0x00}, | |
149 | [OPAL_LOCKING_INFO_TABLE] = | |
150 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x01 }, | |
151 | [OPAL_ENTERPRISE_LOCKING_INFO_TABLE] = | |
152 | { 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00, 0x00 }, | |
153 | ||
154 | /* C_PIN_TABLE object ID's */ | |
155 | ||
1e815b33 | 156 | [OPAL_C_PIN_MSID] = |
455a7b23 SB |
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 | ||
165 | [OPAL_HALF_UID_AUTHORITY_OBJ_REF] = | |
166 | { 0x00, 0x00, 0x0C, 0x05, 0xff, 0xff, 0xff, 0xff }, | |
167 | [OPAL_HALF_UID_BOOLEAN_ACE] = | |
168 | { 0x00, 0x00, 0x04, 0x0E, 0xff, 0xff, 0xff, 0xff }, | |
169 | ||
170 | /* special value for omitted optional parameter */ | |
171 | [OPAL_UID_HEXFF] = | |
172 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, | |
173 | }; | |
174 | ||
175 | /* | |
176 | * TCG Storage SSC Methods. | |
177 | * Derived from: TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
178 | * Section: 6.3 Assigned UIDs | |
179 | */ | |
1b6b75b0 | 180 | static const u8 opalmethod[][OPAL_METHOD_LENGTH] = { |
455a7b23 SB |
181 | [OPAL_PROPERTIES] = |
182 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x01 }, | |
183 | [OPAL_STARTSESSION] = | |
184 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x02 }, | |
185 | [OPAL_REVERT] = | |
186 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x02 }, | |
187 | [OPAL_ACTIVATE] = | |
188 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x02, 0x03 }, | |
189 | [OPAL_EGET] = | |
190 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x06 }, | |
191 | [OPAL_ESET] = | |
192 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x07 }, | |
193 | [OPAL_NEXT] = | |
194 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x08 }, | |
195 | [OPAL_EAUTHENTICATE] = | |
196 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0c }, | |
197 | [OPAL_GETACL] = | |
198 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x0d }, | |
199 | [OPAL_GENKEY] = | |
200 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x10 }, | |
201 | [OPAL_REVERTSP] = | |
202 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x11 }, | |
203 | [OPAL_GET] = | |
204 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x16 }, | |
205 | [OPAL_SET] = | |
206 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x17 }, | |
207 | [OPAL_AUTHENTICATE] = | |
208 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x1c }, | |
209 | [OPAL_RANDOM] = | |
210 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x06, 0x01 }, | |
211 | [OPAL_ERASE] = | |
212 | { 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x08, 0x03 }, | |
213 | }; | |
214 | ||
455a7b23 | 215 | static int end_opal_session_error(struct opal_dev *dev); |
0af2648e | 216 | static int opal_discovery0_step(struct opal_dev *dev); |
455a7b23 SB |
217 | |
218 | struct opal_suspend_data { | |
219 | struct opal_lock_unlock unlk; | |
220 | u8 lr; | |
221 | struct list_head node; | |
222 | }; | |
223 | ||
224 | /* | |
225 | * Derived from: | |
226 | * TCG_Storage_Architecture_Core_Spec_v2.01_r1.00 | |
227 | * Section: 5.1.5 Method Status Codes | |
228 | */ | |
229 | static const char * const opal_errors[] = { | |
230 | "Success", | |
231 | "Not Authorized", | |
232 | "Unknown Error", | |
233 | "SP Busy", | |
234 | "SP Failed", | |
235 | "SP Disabled", | |
236 | "SP Frozen", | |
237 | "No Sessions Available", | |
238 | "Uniqueness Conflict", | |
239 | "Insufficient Space", | |
240 | "Insufficient Rows", | |
241 | "Invalid Function", | |
242 | "Invalid Parameter", | |
243 | "Invalid Reference", | |
244 | "Unknown Error", | |
245 | "TPER Malfunction", | |
246 | "Transaction Failure", | |
247 | "Response Overflow", | |
248 | "Authority Locked Out", | |
249 | }; | |
250 | ||
251 | static const char *opal_error_to_human(int error) | |
252 | { | |
253 | if (error == 0x3f) | |
254 | return "Failed"; | |
255 | ||
256 | if (error >= ARRAY_SIZE(opal_errors) || error < 0) | |
257 | return "Unknown Error"; | |
258 | ||
259 | return opal_errors[error]; | |
260 | } | |
261 | ||
262 | static void print_buffer(const u8 *ptr, u32 length) | |
263 | { | |
264 | #ifdef DEBUG | |
265 | print_hex_dump_bytes("OPAL: ", DUMP_PREFIX_OFFSET, ptr, length); | |
266 | pr_debug("\n"); | |
267 | #endif | |
268 | } | |
269 | ||
270 | static bool check_tper(const void *data) | |
271 | { | |
272 | const struct d0_tper_features *tper = data; | |
273 | u8 flags = tper->supported_features; | |
274 | ||
275 | if (!(flags & TPER_SYNC_SUPPORTED)) { | |
591c59d1 SB |
276 | pr_debug("TPer sync not supported. flags = %d\n", |
277 | tper->supported_features); | |
455a7b23 SB |
278 | return false; |
279 | } | |
280 | ||
281 | return true; | |
282 | } | |
283 | ||
dbec491b SB |
284 | static bool check_mbrenabled(const void *data) |
285 | { | |
286 | const struct d0_locking_features *lfeat = data; | |
287 | u8 sup_feat = lfeat->supported_features; | |
288 | ||
289 | return !!(sup_feat & MBR_ENABLED_MASK); | |
290 | } | |
291 | ||
455a7b23 SB |
292 | static bool check_sum(const void *data) |
293 | { | |
294 | const struct d0_single_user_mode *sum = data; | |
295 | u32 nlo = be32_to_cpu(sum->num_locking_objects); | |
296 | ||
297 | if (nlo == 0) { | |
591c59d1 | 298 | pr_debug("Need at least one locking object.\n"); |
455a7b23 SB |
299 | return false; |
300 | } | |
301 | ||
302 | pr_debug("Number of locking objects: %d\n", nlo); | |
303 | ||
304 | return true; | |
305 | } | |
306 | ||
307 | static u16 get_comid_v100(const void *data) | |
308 | { | |
309 | const struct d0_opal_v100 *v100 = data; | |
310 | ||
311 | return be16_to_cpu(v100->baseComID); | |
312 | } | |
313 | ||
314 | static u16 get_comid_v200(const void *data) | |
315 | { | |
316 | const struct d0_opal_v200 *v200 = data; | |
317 | ||
318 | return be16_to_cpu(v200->baseComID); | |
319 | } | |
320 | ||
321 | static int opal_send_cmd(struct opal_dev *dev) | |
322 | { | |
4f1244c8 | 323 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
324 | dev->cmd, IO_BUFFER_LENGTH, |
325 | true); | |
326 | } | |
327 | ||
328 | static int opal_recv_cmd(struct opal_dev *dev) | |
329 | { | |
4f1244c8 | 330 | return dev->send_recv(dev->data, dev->comid, TCG_SECP_01, |
455a7b23 SB |
331 | dev->resp, IO_BUFFER_LENGTH, |
332 | false); | |
333 | } | |
334 | ||
335 | static int opal_recv_check(struct opal_dev *dev) | |
336 | { | |
337 | size_t buflen = IO_BUFFER_LENGTH; | |
338 | void *buffer = dev->resp; | |
339 | struct opal_header *hdr = buffer; | |
340 | int ret; | |
341 | ||
342 | do { | |
343 | pr_debug("Sent OPAL command: outstanding=%d, minTransfer=%d\n", | |
344 | hdr->cp.outstandingData, | |
345 | hdr->cp.minTransfer); | |
346 | ||
347 | if (hdr->cp.outstandingData == 0 || | |
348 | hdr->cp.minTransfer != 0) | |
349 | return 0; | |
350 | ||
351 | memset(buffer, 0, buflen); | |
352 | ret = opal_recv_cmd(dev); | |
353 | } while (!ret); | |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
358 | static int opal_send_recv(struct opal_dev *dev, cont_fn *cont) | |
359 | { | |
360 | int ret; | |
361 | ||
362 | ret = opal_send_cmd(dev); | |
363 | if (ret) | |
364 | return ret; | |
365 | ret = opal_recv_cmd(dev); | |
366 | if (ret) | |
367 | return ret; | |
368 | ret = opal_recv_check(dev); | |
369 | if (ret) | |
370 | return ret; | |
371 | return cont(dev); | |
372 | } | |
373 | ||
374 | static void check_geometry(struct opal_dev *dev, const void *data) | |
375 | { | |
376 | const struct d0_geometry_features *geo = data; | |
377 | ||
378 | dev->align = geo->alignment_granularity; | |
379 | dev->lowest_lba = geo->lowest_aligned_lba; | |
380 | } | |
381 | ||
0af2648e DK |
382 | static int execute_step(struct opal_dev *dev, |
383 | const struct opal_step *step, size_t stepIndex) | |
384 | { | |
385 | int error = step->fn(dev, step->data); | |
386 | ||
387 | if (error) { | |
388 | pr_debug("Step %zu (%pS) failed with error %d: %s\n", | |
389 | stepIndex, step->fn, error, | |
390 | opal_error_to_human(error)); | |
391 | } | |
392 | ||
393 | return error; | |
394 | } | |
395 | ||
a80f36cc DK |
396 | static int execute_steps(struct opal_dev *dev, |
397 | const struct opal_step *steps, size_t n_steps) | |
455a7b23 | 398 | { |
0af2648e DK |
399 | size_t state = 0; |
400 | int error; | |
455a7b23 | 401 | |
0af2648e DK |
402 | /* first do a discovery0 */ |
403 | error = opal_discovery0_step(dev); | |
404 | if (error) | |
405 | return error; | |
455a7b23 | 406 | |
0af2648e DK |
407 | for (state = 0; state < n_steps; state++) { |
408 | error = execute_step(dev, &steps[state], state); | |
3db87236 DK |
409 | if (error) |
410 | goto out_error; | |
411 | } | |
2d19020b | 412 | |
3db87236 DK |
413 | return 0; |
414 | ||
415 | out_error: | |
416 | /* | |
0af2648e DK |
417 | * For each OPAL command the first step in steps starts some sort of |
418 | * session. If an error occurred in the initial discovery0 or if an | |
419 | * error occurred in the first step (and thus stopping the loop with | |
420 | * state == 0) then there was an error before or during the attempt to | |
421 | * start a session. Therefore we shouldn't attempt to terminate a | |
422 | * session, as one has not yet been created. | |
3db87236 | 423 | */ |
0af2648e | 424 | if (state > 0) |
3db87236 | 425 | end_opal_session_error(dev); |
455a7b23 SB |
426 | |
427 | return error; | |
428 | } | |
429 | ||
430 | static int opal_discovery0_end(struct opal_dev *dev) | |
431 | { | |
432 | bool found_com_id = false, supported = true, single_user = false; | |
433 | const struct d0_header *hdr = (struct d0_header *)dev->resp; | |
434 | const u8 *epos = dev->resp, *cpos = dev->resp; | |
435 | u16 comid = 0; | |
77039b96 | 436 | u32 hlen = be32_to_cpu(hdr->length); |
455a7b23 | 437 | |
77039b96 | 438 | print_buffer(dev->resp, hlen); |
dbec491b | 439 | dev->mbr_enabled = false; |
455a7b23 | 440 | |
77039b96 | 441 | if (hlen > IO_BUFFER_LENGTH - sizeof(*hdr)) { |
591c59d1 SB |
442 | pr_debug("Discovery length overflows buffer (%zu+%u)/%u\n", |
443 | sizeof(*hdr), hlen, IO_BUFFER_LENGTH); | |
77039b96 JD |
444 | return -EFAULT; |
445 | } | |
446 | ||
447 | epos += hlen; /* end of buffer */ | |
455a7b23 SB |
448 | cpos += sizeof(*hdr); /* current position on buffer */ |
449 | ||
450 | while (cpos < epos && supported) { | |
451 | const struct d0_features *body = | |
452 | (const struct d0_features *)cpos; | |
453 | ||
454 | switch (be16_to_cpu(body->code)) { | |
455 | case FC_TPER: | |
456 | supported = check_tper(body->features); | |
457 | break; | |
458 | case FC_SINGLEUSER: | |
459 | single_user = check_sum(body->features); | |
460 | break; | |
461 | case FC_GEOMETRY: | |
462 | check_geometry(dev, body); | |
463 | break; | |
464 | case FC_LOCKING: | |
dbec491b SB |
465 | dev->mbr_enabled = check_mbrenabled(body->features); |
466 | break; | |
455a7b23 SB |
467 | case FC_ENTERPRISE: |
468 | case FC_DATASTORE: | |
469 | /* some ignored properties */ | |
470 | pr_debug("Found OPAL feature description: %d\n", | |
471 | be16_to_cpu(body->code)); | |
472 | break; | |
473 | case FC_OPALV100: | |
474 | comid = get_comid_v100(body->features); | |
475 | found_com_id = true; | |
476 | break; | |
477 | case FC_OPALV200: | |
478 | comid = get_comid_v200(body->features); | |
479 | found_com_id = true; | |
480 | break; | |
481 | case 0xbfff ... 0xffff: | |
482 | /* vendor specific, just ignore */ | |
483 | break; | |
484 | default: | |
485 | pr_debug("OPAL Unknown feature: %d\n", | |
486 | be16_to_cpu(body->code)); | |
487 | ||
488 | } | |
489 | cpos += body->length + 4; | |
490 | } | |
491 | ||
492 | if (!supported) { | |
f5b37b7c | 493 | pr_debug("This device is not Opal enabled. Not Supported!\n"); |
455a7b23 SB |
494 | return -EOPNOTSUPP; |
495 | } | |
496 | ||
497 | if (!single_user) | |
f5b37b7c | 498 | pr_debug("Device doesn't support single user mode\n"); |
455a7b23 SB |
499 | |
500 | ||
501 | if (!found_com_id) { | |
f5b37b7c | 502 | pr_debug("Could not find OPAL comid for device. Returning early\n"); |
ed7158ba | 503 | return -EOPNOTSUPP; |
455a7b23 SB |
504 | } |
505 | ||
506 | dev->comid = comid; | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
eed64951 | 511 | static int opal_discovery0(struct opal_dev *dev, void *data) |
455a7b23 SB |
512 | { |
513 | int ret; | |
514 | ||
515 | memset(dev->resp, 0, IO_BUFFER_LENGTH); | |
516 | dev->comid = OPAL_DISCOVERY_COMID; | |
517 | ret = opal_recv_cmd(dev); | |
518 | if (ret) | |
519 | return ret; | |
520 | return opal_discovery0_end(dev); | |
521 | } | |
522 | ||
0af2648e DK |
523 | static int opal_discovery0_step(struct opal_dev *dev) |
524 | { | |
525 | const struct opal_step discovery0_step = { | |
526 | opal_discovery0, | |
527 | }; | |
528 | return execute_step(dev, &discovery0_step, 0); | |
529 | } | |
530 | ||
a9b25b4c JR |
531 | static size_t remaining_size(struct opal_dev *cmd) |
532 | { | |
533 | return IO_BUFFER_LENGTH - cmd->pos; | |
534 | } | |
535 | ||
e2821a50 | 536 | static bool can_add(int *err, struct opal_dev *cmd, size_t len) |
455a7b23 SB |
537 | { |
538 | if (*err) | |
e2821a50 JR |
539 | return false; |
540 | ||
a9b25b4c | 541 | if (remaining_size(cmd) < len) { |
e2821a50 | 542 | pr_debug("Error adding %zu bytes: end of buffer.\n", len); |
455a7b23 | 543 | *err = -ERANGE; |
e2821a50 | 544 | return false; |
455a7b23 | 545 | } |
e2821a50 JR |
546 | |
547 | return true; | |
548 | } | |
549 | ||
550 | static void add_token_u8(int *err, struct opal_dev *cmd, u8 tok) | |
551 | { | |
552 | if (!can_add(err, cmd, 1)) | |
553 | return; | |
455a7b23 SB |
554 | cmd->cmd[cmd->pos++] = tok; |
555 | } | |
556 | ||
557 | static void add_short_atom_header(struct opal_dev *cmd, bool bytestring, | |
558 | bool has_sign, int len) | |
559 | { | |
560 | u8 atom; | |
561 | int err = 0; | |
562 | ||
563 | atom = SHORT_ATOM_ID; | |
564 | atom |= bytestring ? SHORT_ATOM_BYTESTRING : 0; | |
565 | atom |= has_sign ? SHORT_ATOM_SIGNED : 0; | |
566 | atom |= len & SHORT_ATOM_LEN_MASK; | |
567 | ||
568 | add_token_u8(&err, cmd, atom); | |
569 | } | |
570 | ||
571 | static void add_medium_atom_header(struct opal_dev *cmd, bool bytestring, | |
572 | bool has_sign, int len) | |
573 | { | |
574 | u8 header0; | |
575 | ||
576 | header0 = MEDIUM_ATOM_ID; | |
577 | header0 |= bytestring ? MEDIUM_ATOM_BYTESTRING : 0; | |
578 | header0 |= has_sign ? MEDIUM_ATOM_SIGNED : 0; | |
579 | header0 |= (len >> 8) & MEDIUM_ATOM_LEN_MASK; | |
580 | cmd->cmd[cmd->pos++] = header0; | |
581 | cmd->cmd[cmd->pos++] = len; | |
582 | } | |
583 | ||
584 | static void add_token_u64(int *err, struct opal_dev *cmd, u64 number) | |
585 | { | |
455a7b23 SB |
586 | size_t len; |
587 | int msb; | |
455a7b23 SB |
588 | |
589 | if (!(number & ~TINY_ATOM_DATA_MASK)) { | |
590 | add_token_u8(err, cmd, number); | |
591 | return; | |
592 | } | |
593 | ||
5f990d31 JR |
594 | msb = fls64(number); |
595 | len = DIV_ROUND_UP(msb, 8); | |
455a7b23 | 596 | |
e2821a50 | 597 | if (!can_add(err, cmd, len + 1)) { |
591c59d1 | 598 | pr_debug("Error adding u64: end of buffer.\n"); |
455a7b23 SB |
599 | return; |
600 | } | |
601 | add_short_atom_header(cmd, false, false, len); | |
5f990d31 JR |
602 | while (len--) |
603 | add_token_u8(err, cmd, number >> (len * 8)); | |
455a7b23 SB |
604 | } |
605 | ||
28559959 | 606 | static u8 *add_bytestring_header(int *err, struct opal_dev *cmd, size_t len) |
455a7b23 SB |
607 | { |
608 | size_t header_len = 1; | |
609 | bool is_short_atom = true; | |
610 | ||
455a7b23 SB |
611 | if (len & ~SHORT_ATOM_LEN_MASK) { |
612 | header_len = 2; | |
613 | is_short_atom = false; | |
614 | } | |
615 | ||
e2821a50 | 616 | if (!can_add(err, cmd, header_len + len)) { |
591c59d1 | 617 | pr_debug("Error adding bytestring: end of buffer.\n"); |
28559959 | 618 | return NULL; |
455a7b23 SB |
619 | } |
620 | ||
621 | if (is_short_atom) | |
622 | add_short_atom_header(cmd, true, false, len); | |
623 | else | |
624 | add_medium_atom_header(cmd, true, false, len); | |
625 | ||
28559959 JR |
626 | return &cmd->cmd[cmd->pos]; |
627 | } | |
455a7b23 | 628 | |
28559959 JR |
629 | static void add_token_bytestring(int *err, struct opal_dev *cmd, |
630 | const u8 *bytestring, size_t len) | |
631 | { | |
632 | u8 *start; | |
633 | ||
634 | start = add_bytestring_header(err, cmd, len); | |
635 | if (!start) | |
636 | return; | |
637 | memcpy(start, bytestring, len); | |
638 | cmd->pos += len; | |
455a7b23 SB |
639 | } |
640 | ||
641 | static int build_locking_range(u8 *buffer, size_t length, u8 lr) | |
642 | { | |
643 | if (length > OPAL_UID_LENGTH) { | |
591c59d1 | 644 | pr_debug("Can't build locking range. Length OOB\n"); |
455a7b23 SB |
645 | return -ERANGE; |
646 | } | |
647 | ||
648 | memcpy(buffer, opaluid[OPAL_LOCKINGRANGE_GLOBAL], OPAL_UID_LENGTH); | |
649 | ||
650 | if (lr == 0) | |
651 | return 0; | |
652 | buffer[5] = LOCKING_RANGE_NON_GLOBAL; | |
653 | buffer[7] = lr; | |
654 | ||
655 | return 0; | |
656 | } | |
657 | ||
658 | static int build_locking_user(u8 *buffer, size_t length, u8 lr) | |
659 | { | |
660 | if (length > OPAL_UID_LENGTH) { | |
1e815b33 | 661 | pr_debug("Can't build locking range user. Length OOB\n"); |
455a7b23 SB |
662 | return -ERANGE; |
663 | } | |
664 | ||
665 | memcpy(buffer, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
666 | ||
667 | buffer[7] = lr + 1; | |
668 | ||
669 | return 0; | |
670 | } | |
671 | ||
672 | static void set_comid(struct opal_dev *cmd, u16 comid) | |
673 | { | |
674 | struct opal_header *hdr = (struct opal_header *)cmd->cmd; | |
675 | ||
676 | hdr->cp.extendedComID[0] = comid >> 8; | |
677 | hdr->cp.extendedComID[1] = comid; | |
678 | hdr->cp.extendedComID[2] = 0; | |
679 | hdr->cp.extendedComID[3] = 0; | |
680 | } | |
681 | ||
682 | static int cmd_finalize(struct opal_dev *cmd, u32 hsn, u32 tsn) | |
683 | { | |
684 | struct opal_header *hdr; | |
685 | int err = 0; | |
686 | ||
a9b25b4c JR |
687 | /* |
688 | * Close the parameter list opened from cmd_start. | |
689 | * The number of bytes added must be equal to | |
690 | * CMD_FINALIZE_BYTES_NEEDED. | |
691 | */ | |
78d584ca DK |
692 | add_token_u8(&err, cmd, OPAL_ENDLIST); |
693 | ||
455a7b23 SB |
694 | add_token_u8(&err, cmd, OPAL_ENDOFDATA); |
695 | add_token_u8(&err, cmd, OPAL_STARTLIST); | |
696 | add_token_u8(&err, cmd, 0); | |
697 | add_token_u8(&err, cmd, 0); | |
698 | add_token_u8(&err, cmd, 0); | |
699 | add_token_u8(&err, cmd, OPAL_ENDLIST); | |
700 | ||
701 | if (err) { | |
591c59d1 | 702 | pr_debug("Error finalizing command.\n"); |
455a7b23 SB |
703 | return -EFAULT; |
704 | } | |
705 | ||
706 | hdr = (struct opal_header *) cmd->cmd; | |
707 | ||
708 | hdr->pkt.tsn = cpu_to_be32(tsn); | |
709 | hdr->pkt.hsn = cpu_to_be32(hsn); | |
710 | ||
711 | hdr->subpkt.length = cpu_to_be32(cmd->pos - sizeof(*hdr)); | |
712 | while (cmd->pos % 4) { | |
713 | if (cmd->pos >= IO_BUFFER_LENGTH) { | |
591c59d1 | 714 | pr_debug("Error: Buffer overrun\n"); |
455a7b23 SB |
715 | return -ERANGE; |
716 | } | |
717 | cmd->cmd[cmd->pos++] = 0; | |
718 | } | |
719 | hdr->pkt.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp) - | |
720 | sizeof(hdr->pkt)); | |
721 | hdr->cp.length = cpu_to_be32(cmd->pos - sizeof(hdr->cp)); | |
722 | ||
723 | return 0; | |
724 | } | |
725 | ||
cccb9241 JD |
726 | static const struct opal_resp_tok *response_get_token( |
727 | const struct parsed_resp *resp, | |
728 | int n) | |
455a7b23 SB |
729 | { |
730 | const struct opal_resp_tok *tok; | |
731 | ||
7d9b62ae DK |
732 | if (!resp) { |
733 | pr_debug("Response is NULL\n"); | |
734 | return ERR_PTR(-EINVAL); | |
735 | } | |
736 | ||
455a7b23 | 737 | if (n >= resp->num) { |
591c59d1 SB |
738 | pr_debug("Token number doesn't exist: %d, resp: %d\n", |
739 | n, resp->num); | |
cccb9241 | 740 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
741 | } |
742 | ||
743 | tok = &resp->toks[n]; | |
744 | if (tok->len == 0) { | |
591c59d1 | 745 | pr_debug("Token length must be non-zero\n"); |
cccb9241 | 746 | return ERR_PTR(-EINVAL); |
455a7b23 SB |
747 | } |
748 | ||
cccb9241 | 749 | return tok; |
455a7b23 SB |
750 | } |
751 | ||
aedb6e24 JD |
752 | static ssize_t response_parse_tiny(struct opal_resp_tok *tok, |
753 | const u8 *pos) | |
455a7b23 SB |
754 | { |
755 | tok->pos = pos; | |
756 | tok->len = 1; | |
757 | tok->width = OPAL_WIDTH_TINY; | |
758 | ||
759 | if (pos[0] & TINY_ATOM_SIGNED) { | |
760 | tok->type = OPAL_DTA_TOKENID_SINT; | |
761 | } else { | |
762 | tok->type = OPAL_DTA_TOKENID_UINT; | |
763 | tok->stored.u = pos[0] & 0x3f; | |
764 | } | |
765 | ||
766 | return tok->len; | |
767 | } | |
768 | ||
aedb6e24 JD |
769 | static ssize_t response_parse_short(struct opal_resp_tok *tok, |
770 | const u8 *pos) | |
455a7b23 SB |
771 | { |
772 | tok->pos = pos; | |
773 | tok->len = (pos[0] & SHORT_ATOM_LEN_MASK) + 1; | |
774 | tok->width = OPAL_WIDTH_SHORT; | |
775 | ||
776 | if (pos[0] & SHORT_ATOM_BYTESTRING) { | |
777 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
778 | } else if (pos[0] & SHORT_ATOM_SIGNED) { | |
779 | tok->type = OPAL_DTA_TOKENID_SINT; | |
780 | } else { | |
781 | u64 u_integer = 0; | |
aedb6e24 | 782 | ssize_t i, b = 0; |
455a7b23 SB |
783 | |
784 | tok->type = OPAL_DTA_TOKENID_UINT; | |
785 | if (tok->len > 9) { | |
591c59d1 | 786 | pr_debug("uint64 with more than 8 bytes\n"); |
455a7b23 SB |
787 | return -EINVAL; |
788 | } | |
789 | for (i = tok->len - 1; i > 0; i--) { | |
790 | u_integer |= ((u64)pos[i] << (8 * b)); | |
791 | b++; | |
792 | } | |
793 | tok->stored.u = u_integer; | |
794 | } | |
795 | ||
796 | return tok->len; | |
797 | } | |
798 | ||
aedb6e24 JD |
799 | static ssize_t response_parse_medium(struct opal_resp_tok *tok, |
800 | const u8 *pos) | |
455a7b23 SB |
801 | { |
802 | tok->pos = pos; | |
803 | tok->len = (((pos[0] & MEDIUM_ATOM_LEN_MASK) << 8) | pos[1]) + 2; | |
804 | tok->width = OPAL_WIDTH_MEDIUM; | |
805 | ||
806 | if (pos[0] & MEDIUM_ATOM_BYTESTRING) | |
807 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
808 | else if (pos[0] & MEDIUM_ATOM_SIGNED) | |
809 | tok->type = OPAL_DTA_TOKENID_SINT; | |
810 | else | |
811 | tok->type = OPAL_DTA_TOKENID_UINT; | |
812 | ||
813 | return tok->len; | |
814 | } | |
815 | ||
aedb6e24 JD |
816 | static ssize_t response_parse_long(struct opal_resp_tok *tok, |
817 | const u8 *pos) | |
455a7b23 SB |
818 | { |
819 | tok->pos = pos; | |
820 | tok->len = ((pos[1] << 16) | (pos[2] << 8) | pos[3]) + 4; | |
821 | tok->width = OPAL_WIDTH_LONG; | |
822 | ||
823 | if (pos[0] & LONG_ATOM_BYTESTRING) | |
824 | tok->type = OPAL_DTA_TOKENID_BYTESTRING; | |
825 | else if (pos[0] & LONG_ATOM_SIGNED) | |
826 | tok->type = OPAL_DTA_TOKENID_SINT; | |
827 | else | |
828 | tok->type = OPAL_DTA_TOKENID_UINT; | |
829 | ||
830 | return tok->len; | |
831 | } | |
832 | ||
aedb6e24 JD |
833 | static ssize_t response_parse_token(struct opal_resp_tok *tok, |
834 | const u8 *pos) | |
455a7b23 SB |
835 | { |
836 | tok->pos = pos; | |
837 | tok->len = 1; | |
838 | tok->type = OPAL_DTA_TOKENID_TOKEN; | |
839 | tok->width = OPAL_WIDTH_TOKEN; | |
840 | ||
841 | return tok->len; | |
842 | } | |
843 | ||
844 | static int response_parse(const u8 *buf, size_t length, | |
845 | struct parsed_resp *resp) | |
846 | { | |
847 | const struct opal_header *hdr; | |
848 | struct opal_resp_tok *iter; | |
849 | int num_entries = 0; | |
850 | int total; | |
aedb6e24 | 851 | ssize_t token_length; |
455a7b23 | 852 | const u8 *pos; |
77039b96 | 853 | u32 clen, plen, slen; |
455a7b23 SB |
854 | |
855 | if (!buf) | |
856 | return -EFAULT; | |
857 | ||
858 | if (!resp) | |
859 | return -EFAULT; | |
860 | ||
861 | hdr = (struct opal_header *)buf; | |
862 | pos = buf; | |
863 | pos += sizeof(*hdr); | |
864 | ||
77039b96 JD |
865 | clen = be32_to_cpu(hdr->cp.length); |
866 | plen = be32_to_cpu(hdr->pkt.length); | |
867 | slen = be32_to_cpu(hdr->subpkt.length); | |
868 | pr_debug("Response size: cp: %u, pkt: %u, subpkt: %u\n", | |
869 | clen, plen, slen); | |
870 | ||
871 | if (clen == 0 || plen == 0 || slen == 0 || | |
872 | slen > IO_BUFFER_LENGTH - sizeof(*hdr)) { | |
591c59d1 SB |
873 | pr_debug("Bad header length. cp: %u, pkt: %u, subpkt: %u\n", |
874 | clen, plen, slen); | |
455a7b23 SB |
875 | print_buffer(pos, sizeof(*hdr)); |
876 | return -EINVAL; | |
877 | } | |
878 | ||
879 | if (pos > buf + length) | |
880 | return -EFAULT; | |
881 | ||
882 | iter = resp->toks; | |
77039b96 | 883 | total = slen; |
455a7b23 SB |
884 | print_buffer(pos, total); |
885 | while (total > 0) { | |
886 | if (pos[0] <= TINY_ATOM_BYTE) /* tiny atom */ | |
887 | token_length = response_parse_tiny(iter, pos); | |
888 | else if (pos[0] <= SHORT_ATOM_BYTE) /* short atom */ | |
889 | token_length = response_parse_short(iter, pos); | |
890 | else if (pos[0] <= MEDIUM_ATOM_BYTE) /* medium atom */ | |
891 | token_length = response_parse_medium(iter, pos); | |
892 | else if (pos[0] <= LONG_ATOM_BYTE) /* long atom */ | |
893 | token_length = response_parse_long(iter, pos); | |
894 | else /* TOKEN */ | |
895 | token_length = response_parse_token(iter, pos); | |
896 | ||
aedb6e24 JD |
897 | if (token_length < 0) |
898 | return token_length; | |
455a7b23 SB |
899 | |
900 | pos += token_length; | |
901 | total -= token_length; | |
902 | iter++; | |
903 | num_entries++; | |
904 | } | |
905 | ||
906 | if (num_entries == 0) { | |
591c59d1 | 907 | pr_debug("Couldn't parse response.\n"); |
455a7b23 SB |
908 | return -EINVAL; |
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 | { | |
d15e1175 | 918 | u8 skip; |
b68f09ec | 919 | const struct opal_resp_tok *tok; |
d15e1175 | 920 | |
455a7b23 | 921 | *store = NULL; |
b68f09ec DK |
922 | tok = response_get_token(resp, n); |
923 | if (IS_ERR(tok)) | |
455a7b23 | 924 | return 0; |
455a7b23 | 925 | |
b68f09ec | 926 | if (tok->type != OPAL_DTA_TOKENID_BYTESTRING) { |
591c59d1 | 927 | pr_debug("Token is not a byte string!\n"); |
455a7b23 SB |
928 | return 0; |
929 | } | |
930 | ||
b68f09ec | 931 | switch (tok->width) { |
d15e1175 JR |
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 | ||
b68f09ec DK |
947 | *store = tok->pos + skip; |
948 | return tok->len - skip; | |
455a7b23 SB |
949 | } |
950 | ||
951 | static u64 response_get_u64(const struct parsed_resp *resp, int n) | |
952 | { | |
b68f09ec | 953 | const struct opal_resp_tok *tok; |
455a7b23 | 954 | |
b68f09ec DK |
955 | tok = response_get_token(resp, n); |
956 | if (IS_ERR(tok)) | |
455a7b23 | 957 | return 0; |
455a7b23 | 958 | |
b68f09ec DK |
959 | if (tok->type != OPAL_DTA_TOKENID_UINT) { |
960 | pr_debug("Token is not unsigned int: %d\n", tok->type); | |
455a7b23 SB |
961 | return 0; |
962 | } | |
963 | ||
b68f09ec DK |
964 | if (tok->width != OPAL_WIDTH_TINY && tok->width != OPAL_WIDTH_SHORT) { |
965 | pr_debug("Atom is not short or tiny: %d\n", tok->width); | |
455a7b23 SB |
966 | return 0; |
967 | } | |
968 | ||
b68f09ec | 969 | return tok->stored.u; |
455a7b23 SB |
970 | } |
971 | ||
cccb9241 JD |
972 | static bool response_token_matches(const struct opal_resp_tok *token, u8 match) |
973 | { | |
974 | if (IS_ERR(token) || | |
975 | token->type != OPAL_DTA_TOKENID_TOKEN || | |
976 | token->pos[0] != match) | |
977 | return false; | |
978 | return true; | |
979 | } | |
980 | ||
455a7b23 SB |
981 | static u8 response_status(const struct parsed_resp *resp) |
982 | { | |
cccb9241 JD |
983 | const struct opal_resp_tok *tok; |
984 | ||
985 | tok = response_get_token(resp, 0); | |
986 | if (response_token_matches(tok, OPAL_ENDOFSESSION)) | |
455a7b23 | 987 | return 0; |
455a7b23 SB |
988 | |
989 | if (resp->num < 5) | |
990 | return DTAERROR_NO_METHOD_STATUS; | |
991 | ||
cccb9241 JD |
992 | tok = response_get_token(resp, resp->num - 5); |
993 | if (!response_token_matches(tok, OPAL_STARTLIST)) | |
994 | return DTAERROR_NO_METHOD_STATUS; | |
995 | ||
996 | tok = response_get_token(resp, resp->num - 1); | |
997 | if (!response_token_matches(tok, OPAL_ENDLIST)) | |
455a7b23 SB |
998 | return DTAERROR_NO_METHOD_STATUS; |
999 | ||
1000 | return response_get_u64(resp, resp->num - 4); | |
1001 | } | |
1002 | ||
1003 | /* Parses and checks for errors */ | |
1004 | static int parse_and_check_status(struct opal_dev *dev) | |
1005 | { | |
1006 | int error; | |
1007 | ||
1008 | print_buffer(dev->cmd, dev->pos); | |
1009 | ||
1010 | error = response_parse(dev->resp, IO_BUFFER_LENGTH, &dev->parsed); | |
1011 | if (error) { | |
591c59d1 | 1012 | pr_debug("Couldn't parse response.\n"); |
455a7b23 SB |
1013 | return error; |
1014 | } | |
1015 | ||
1016 | return response_status(&dev->parsed); | |
1017 | } | |
1018 | ||
1019 | static void clear_opal_cmd(struct opal_dev *dev) | |
1020 | { | |
1021 | dev->pos = sizeof(struct opal_header); | |
1022 | memset(dev->cmd, 0, IO_BUFFER_LENGTH); | |
1023 | } | |
1024 | ||
e8b29224 DK |
1025 | static int cmd_start(struct opal_dev *dev, const u8 *uid, const u8 *method) |
1026 | { | |
1027 | int err = 0; | |
1028 | ||
1029 | clear_opal_cmd(dev); | |
1030 | set_comid(dev, dev->comid); | |
1031 | ||
1032 | add_token_u8(&err, dev, OPAL_CALL); | |
1033 | add_token_bytestring(&err, dev, uid, OPAL_UID_LENGTH); | |
1034 | add_token_bytestring(&err, dev, method, OPAL_METHOD_LENGTH); | |
1035 | ||
1036 | /* | |
1037 | * Every method call is followed by its parameters enclosed within | |
1038 | * OPAL_STARTLIST and OPAL_ENDLIST tokens. We automatically open the | |
1039 | * parameter list here and close it later in cmd_finalize. | |
1040 | */ | |
1041 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1042 | ||
1043 | return err; | |
1044 | } | |
1045 | ||
455a7b23 SB |
1046 | static int start_opal_session_cont(struct opal_dev *dev) |
1047 | { | |
1048 | u32 hsn, tsn; | |
1049 | int error = 0; | |
1050 | ||
1051 | error = parse_and_check_status(dev); | |
1052 | if (error) | |
1053 | return error; | |
1054 | ||
1055 | hsn = response_get_u64(&dev->parsed, 4); | |
1056 | tsn = response_get_u64(&dev->parsed, 5); | |
1057 | ||
1058 | if (hsn == 0 && tsn == 0) { | |
591c59d1 | 1059 | pr_debug("Couldn't authenticate session\n"); |
455a7b23 SB |
1060 | return -EPERM; |
1061 | } | |
1062 | ||
1063 | dev->hsn = hsn; | |
1064 | dev->tsn = tsn; | |
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static void add_suspend_info(struct opal_dev *dev, | |
1069 | struct opal_suspend_data *sus) | |
1070 | { | |
1071 | struct opal_suspend_data *iter; | |
1072 | ||
1073 | list_for_each_entry(iter, &dev->unlk_lst, node) { | |
1074 | if (iter->lr == sus->lr) { | |
1075 | list_del(&iter->node); | |
1076 | kfree(iter); | |
1077 | break; | |
1078 | } | |
1079 | } | |
1080 | list_add_tail(&sus->node, &dev->unlk_lst); | |
1081 | } | |
1082 | ||
1083 | static int end_session_cont(struct opal_dev *dev) | |
1084 | { | |
1085 | dev->hsn = 0; | |
1086 | dev->tsn = 0; | |
1087 | return parse_and_check_status(dev); | |
1088 | } | |
1089 | ||
1090 | static int finalize_and_send(struct opal_dev *dev, cont_fn cont) | |
1091 | { | |
1092 | int ret; | |
1093 | ||
1094 | ret = cmd_finalize(dev, dev->hsn, dev->tsn); | |
1095 | if (ret) { | |
591c59d1 | 1096 | pr_debug("Error finalizing command buffer: %d\n", ret); |
455a7b23 SB |
1097 | return ret; |
1098 | } | |
1099 | ||
1100 | print_buffer(dev->cmd, dev->pos); | |
1101 | ||
1102 | return opal_send_recv(dev, cont); | |
1103 | } | |
1104 | ||
3fff234b DK |
1105 | /* |
1106 | * request @column from table @table on device @dev. On success, the column | |
1107 | * data will be available in dev->resp->tok[4] | |
1108 | */ | |
1109 | static int generic_get_column(struct opal_dev *dev, const u8 *table, | |
1110 | u64 column) | |
1111 | { | |
1112 | int err; | |
1113 | ||
1114 | err = cmd_start(dev, table, opalmethod[OPAL_GET]); | |
1115 | ||
1116 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1117 | ||
1118 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1119 | add_token_u8(&err, dev, OPAL_STARTCOLUMN); | |
1120 | add_token_u64(&err, dev, column); | |
1121 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1122 | ||
1123 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1124 | add_token_u8(&err, dev, OPAL_ENDCOLUMN); | |
1125 | add_token_u64(&err, dev, column); | |
1126 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1127 | ||
1128 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1129 | ||
1130 | if (err) | |
1131 | return err; | |
1132 | ||
1133 | return finalize_and_send(dev, parse_and_check_status); | |
1134 | } | |
1135 | ||
ff91064e JR |
1136 | /* |
1137 | * see TCG SAS 5.3.2.3 for a description of the available columns | |
1138 | * | |
1139 | * the result is provided in dev->resp->tok[4] | |
1140 | */ | |
1141 | static int generic_get_table_info(struct opal_dev *dev, enum opal_uid table, | |
1142 | u64 column) | |
1143 | { | |
1144 | u8 uid[OPAL_UID_LENGTH]; | |
1145 | const unsigned int half = OPAL_UID_LENGTH/2; | |
1146 | ||
1147 | /* sed-opal UIDs can be split in two halves: | |
1148 | * first: actual table index | |
1149 | * second: relative index in the table | |
1150 | * so we have to get the first half of the OPAL_TABLE_TABLE and use the | |
1151 | * first part of the target table as relative index into that table | |
1152 | */ | |
1153 | memcpy(uid, opaluid[OPAL_TABLE_TABLE], half); | |
1154 | memcpy(uid+half, opaluid[table], half); | |
1155 | ||
1156 | return generic_get_column(dev, uid, column); | |
1157 | } | |
1158 | ||
eed64951 | 1159 | static int gen_key(struct opal_dev *dev, void *data) |
455a7b23 | 1160 | { |
455a7b23 | 1161 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1162 | int err; |
455a7b23 SB |
1163 | |
1164 | memcpy(uid, dev->prev_data, min(sizeof(uid), dev->prev_d_len)); | |
455a7b23 SB |
1165 | kfree(dev->prev_data); |
1166 | dev->prev_data = NULL; | |
1167 | ||
e8b29224 | 1168 | err = cmd_start(dev, uid, opalmethod[OPAL_GENKEY]); |
455a7b23 SB |
1169 | |
1170 | if (err) { | |
591c59d1 | 1171 | pr_debug("Error building gen key command\n"); |
455a7b23 SB |
1172 | return err; |
1173 | ||
1174 | } | |
1175 | return finalize_and_send(dev, parse_and_check_status); | |
1176 | } | |
1177 | ||
1178 | static int get_active_key_cont(struct opal_dev *dev) | |
1179 | { | |
1180 | const char *activekey; | |
1181 | size_t keylen; | |
1182 | int error = 0; | |
1183 | ||
1184 | error = parse_and_check_status(dev); | |
1185 | if (error) | |
1186 | return error; | |
1187 | keylen = response_get_string(&dev->parsed, 4, &activekey); | |
1188 | if (!activekey) { | |
591c59d1 SB |
1189 | pr_debug("%s: Couldn't extract the Activekey from the response\n", |
1190 | __func__); | |
455a7b23 SB |
1191 | return OPAL_INVAL_PARAM; |
1192 | } | |
1193 | dev->prev_data = kmemdup(activekey, keylen, GFP_KERNEL); | |
1194 | ||
1195 | if (!dev->prev_data) | |
1196 | return -ENOMEM; | |
1197 | ||
1198 | dev->prev_d_len = keylen; | |
1199 | ||
1200 | return 0; | |
1201 | } | |
1202 | ||
eed64951 | 1203 | static int get_active_key(struct opal_dev *dev, void *data) |
455a7b23 SB |
1204 | { |
1205 | u8 uid[OPAL_UID_LENGTH]; | |
e8b29224 | 1206 | int err; |
eed64951 | 1207 | u8 *lr = data; |
455a7b23 | 1208 | |
455a7b23 SB |
1209 | err = build_locking_range(uid, sizeof(uid), *lr); |
1210 | if (err) | |
1211 | return err; | |
1212 | ||
3fff234b DK |
1213 | err = generic_get_column(dev, uid, OPAL_ACTIVEKEY); |
1214 | if (err) | |
455a7b23 | 1215 | return err; |
455a7b23 | 1216 | |
3fff234b | 1217 | return get_active_key_cont(dev); |
455a7b23 SB |
1218 | } |
1219 | ||
1220 | static int generic_lr_enable_disable(struct opal_dev *dev, | |
1221 | u8 *uid, bool rle, bool wle, | |
1222 | bool rl, bool wl) | |
1223 | { | |
e8b29224 | 1224 | int err; |
455a7b23 | 1225 | |
e8b29224 | 1226 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 | 1227 | |
455a7b23 SB |
1228 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1229 | add_token_u8(&err, dev, OPAL_VALUES); | |
1230 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1231 | ||
1232 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1233 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
455a7b23 SB |
1234 | add_token_u8(&err, dev, rle); |
1235 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1236 | ||
1237 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1238 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
455a7b23 SB |
1239 | add_token_u8(&err, dev, wle); |
1240 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1241 | ||
1242 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1243 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1244 | add_token_u8(&err, dev, rl); | |
1245 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1246 | ||
1247 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1248 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1249 | add_token_u8(&err, dev, wl); | |
1250 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1251 | ||
1252 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1253 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1254 | return err; |
1255 | } | |
1256 | ||
1257 | static inline int enable_global_lr(struct opal_dev *dev, u8 *uid, | |
1258 | struct opal_user_lr_setup *setup) | |
1259 | { | |
1260 | int err; | |
1261 | ||
1262 | err = generic_lr_enable_disable(dev, uid, !!setup->RLE, !!setup->WLE, | |
1263 | 0, 0); | |
1264 | if (err) | |
591c59d1 | 1265 | pr_debug("Failed to create enable global lr command\n"); |
455a7b23 SB |
1266 | return err; |
1267 | } | |
1268 | ||
eed64951 | 1269 | static int setup_locking_range(struct opal_dev *dev, void *data) |
455a7b23 SB |
1270 | { |
1271 | u8 uid[OPAL_UID_LENGTH]; | |
eed64951 | 1272 | struct opal_user_lr_setup *setup = data; |
455a7b23 | 1273 | u8 lr; |
e8b29224 | 1274 | int err; |
455a7b23 | 1275 | |
455a7b23 SB |
1276 | lr = setup->session.opal_key.lr; |
1277 | err = build_locking_range(uid, sizeof(uid), lr); | |
1278 | if (err) | |
1279 | return err; | |
1280 | ||
1281 | if (lr == 0) | |
1282 | err = enable_global_lr(dev, uid, setup); | |
1283 | else { | |
e8b29224 | 1284 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 | 1285 | |
455a7b23 SB |
1286 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1287 | add_token_u8(&err, dev, OPAL_VALUES); | |
1288 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1289 | ||
1290 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1291 | add_token_u8(&err, dev, OPAL_RANGESTART); |
455a7b23 SB |
1292 | add_token_u64(&err, dev, setup->range_start); |
1293 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1294 | ||
1295 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1296 | add_token_u8(&err, dev, OPAL_RANGELENGTH); |
455a7b23 SB |
1297 | add_token_u64(&err, dev, setup->range_length); |
1298 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1299 | ||
1300 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1301 | add_token_u8(&err, dev, OPAL_READLOCKENABLED); |
455a7b23 SB |
1302 | add_token_u64(&err, dev, !!setup->RLE); |
1303 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1304 | ||
1305 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1306 | add_token_u8(&err, dev, OPAL_WRITELOCKENABLED); |
455a7b23 SB |
1307 | add_token_u64(&err, dev, !!setup->WLE); |
1308 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1309 | ||
1310 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1311 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1312 | } |
1313 | if (err) { | |
591c59d1 | 1314 | pr_debug("Error building Setup Locking range command.\n"); |
455a7b23 SB |
1315 | return err; |
1316 | ||
1317 | } | |
1318 | ||
1319 | return finalize_and_send(dev, parse_and_check_status); | |
1320 | } | |
1321 | ||
1322 | static int start_generic_opal_session(struct opal_dev *dev, | |
1323 | enum opal_uid auth, | |
1324 | enum opal_uid sp_type, | |
1325 | const char *key, | |
1326 | u8 key_len) | |
1327 | { | |
1328 | u32 hsn; | |
e8b29224 | 1329 | int err; |
455a7b23 | 1330 | |
591c59d1 | 1331 | if (key == NULL && auth != OPAL_ANYBODY_UID) |
455a7b23 | 1332 | return OPAL_INVAL_PARAM; |
455a7b23 | 1333 | |
455a7b23 | 1334 | hsn = GENERIC_HOST_SESSION_NUM; |
e8b29224 DK |
1335 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], |
1336 | opalmethod[OPAL_STARTSESSION]); | |
455a7b23 | 1337 | |
455a7b23 SB |
1338 | add_token_u64(&err, dev, hsn); |
1339 | add_token_bytestring(&err, dev, opaluid[sp_type], OPAL_UID_LENGTH); | |
1340 | add_token_u8(&err, dev, 1); | |
1341 | ||
1342 | switch (auth) { | |
1343 | case OPAL_ANYBODY_UID: | |
455a7b23 SB |
1344 | break; |
1345 | case OPAL_ADMIN1_UID: | |
1346 | case OPAL_SID_UID: | |
5e4c7cf6 | 1347 | case OPAL_PSID_UID: |
455a7b23 SB |
1348 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1349 | add_token_u8(&err, dev, 0); /* HostChallenge */ | |
1350 | add_token_bytestring(&err, dev, key, key_len); | |
1351 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1352 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1353 | add_token_u8(&err, dev, 3); /* HostSignAuth */ | |
1354 | add_token_bytestring(&err, dev, opaluid[auth], | |
1355 | OPAL_UID_LENGTH); | |
1356 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1357 | break; |
1358 | default: | |
591c59d1 | 1359 | pr_debug("Cannot start Admin SP session with auth %d\n", auth); |
455a7b23 SB |
1360 | return OPAL_INVAL_PARAM; |
1361 | } | |
1362 | ||
1363 | if (err) { | |
591c59d1 | 1364 | pr_debug("Error building start adminsp session command.\n"); |
455a7b23 SB |
1365 | return err; |
1366 | } | |
1367 | ||
1368 | return finalize_and_send(dev, start_opal_session_cont); | |
1369 | } | |
1370 | ||
eed64951 | 1371 | static int start_anybodyASP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1372 | { |
1373 | return start_generic_opal_session(dev, OPAL_ANYBODY_UID, | |
1374 | OPAL_ADMINSP_UID, NULL, 0); | |
1375 | } | |
1376 | ||
eed64951 | 1377 | static int start_SIDASP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1378 | { |
1379 | int ret; | |
1380 | const u8 *key = dev->prev_data; | |
455a7b23 SB |
1381 | |
1382 | if (!key) { | |
eed64951 | 1383 | const struct opal_key *okey = data; |
1e815b33 | 1384 | |
455a7b23 SB |
1385 | ret = start_generic_opal_session(dev, OPAL_SID_UID, |
1386 | OPAL_ADMINSP_UID, | |
1387 | okey->key, | |
1388 | okey->key_len); | |
1389 | } else { | |
1390 | ret = start_generic_opal_session(dev, OPAL_SID_UID, | |
1391 | OPAL_ADMINSP_UID, | |
1392 | key, dev->prev_d_len); | |
1393 | kfree(key); | |
1394 | dev->prev_data = NULL; | |
1395 | } | |
1396 | return ret; | |
1397 | } | |
1398 | ||
eed64951 | 1399 | static int start_admin1LSP_opal_session(struct opal_dev *dev, void *data) |
455a7b23 | 1400 | { |
eed64951 | 1401 | struct opal_key *key = data; |
1e815b33 | 1402 | |
455a7b23 SB |
1403 | return start_generic_opal_session(dev, OPAL_ADMIN1_UID, |
1404 | OPAL_LOCKINGSP_UID, | |
1405 | key->key, key->key_len); | |
1406 | } | |
1407 | ||
5e4c7cf6 RR |
1408 | static int start_PSID_opal_session(struct opal_dev *dev, void *data) |
1409 | { | |
1410 | const struct opal_key *okey = data; | |
1411 | ||
1412 | return start_generic_opal_session(dev, OPAL_PSID_UID, | |
1413 | OPAL_ADMINSP_UID, | |
1414 | okey->key, | |
1415 | okey->key_len); | |
1416 | } | |
1417 | ||
eed64951 | 1418 | static int start_auth_opal_session(struct opal_dev *dev, void *data) |
455a7b23 | 1419 | { |
eed64951 | 1420 | struct opal_session_info *session = data; |
455a7b23 | 1421 | u8 lk_ul_user[OPAL_UID_LENGTH]; |
eed64951 | 1422 | size_t keylen = session->opal_key.key_len; |
455a7b23 SB |
1423 | int err = 0; |
1424 | ||
455a7b23 SB |
1425 | u8 *key = session->opal_key.key; |
1426 | u32 hsn = GENERIC_HOST_SESSION_NUM; | |
1427 | ||
e8b29224 | 1428 | if (session->sum) |
455a7b23 SB |
1429 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
1430 | session->opal_key.lr); | |
e8b29224 | 1431 | else if (session->who != OPAL_ADMIN1 && !session->sum) |
455a7b23 SB |
1432 | err = build_locking_user(lk_ul_user, sizeof(lk_ul_user), |
1433 | session->who - 1); | |
e8b29224 | 1434 | else |
455a7b23 SB |
1435 | memcpy(lk_ul_user, opaluid[OPAL_ADMIN1_UID], OPAL_UID_LENGTH); |
1436 | ||
e8b29224 DK |
1437 | if (err) |
1438 | return err; | |
1439 | ||
1440 | err = cmd_start(dev, opaluid[OPAL_SMUID_UID], | |
1441 | opalmethod[OPAL_STARTSESSION]); | |
455a7b23 | 1442 | |
455a7b23 SB |
1443 | add_token_u64(&err, dev, hsn); |
1444 | add_token_bytestring(&err, dev, opaluid[OPAL_LOCKINGSP_UID], | |
1445 | OPAL_UID_LENGTH); | |
1446 | add_token_u8(&err, dev, 1); | |
1447 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1448 | add_token_u8(&err, dev, 0); | |
1449 | add_token_bytestring(&err, dev, key, keylen); | |
1450 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1451 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1452 | add_token_u8(&err, dev, 3); | |
1453 | add_token_bytestring(&err, dev, lk_ul_user, OPAL_UID_LENGTH); | |
1454 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1455 | |
1456 | if (err) { | |
591c59d1 | 1457 | pr_debug("Error building STARTSESSION command.\n"); |
455a7b23 SB |
1458 | return err; |
1459 | } | |
1460 | ||
1461 | return finalize_and_send(dev, start_opal_session_cont); | |
1462 | } | |
1463 | ||
eed64951 | 1464 | static int revert_tper(struct opal_dev *dev, void *data) |
455a7b23 | 1465 | { |
e8b29224 | 1466 | int err; |
455a7b23 | 1467 | |
e8b29224 DK |
1468 | err = cmd_start(dev, opaluid[OPAL_ADMINSP_UID], |
1469 | opalmethod[OPAL_REVERT]); | |
455a7b23 | 1470 | if (err) { |
591c59d1 | 1471 | pr_debug("Error building REVERT TPER command.\n"); |
455a7b23 SB |
1472 | return err; |
1473 | } | |
1474 | ||
1475 | return finalize_and_send(dev, parse_and_check_status); | |
1476 | } | |
1477 | ||
eed64951 | 1478 | static int internal_activate_user(struct opal_dev *dev, void *data) |
455a7b23 | 1479 | { |
eed64951 | 1480 | struct opal_session_info *session = data; |
455a7b23 | 1481 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1482 | int err; |
455a7b23 SB |
1483 | |
1484 | memcpy(uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1485 | uid[7] = session->who; | |
1486 | ||
e8b29224 | 1487 | err = cmd_start(dev, uid, opalmethod[OPAL_SET]); |
455a7b23 SB |
1488 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1489 | add_token_u8(&err, dev, OPAL_VALUES); | |
1490 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1491 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1492 | add_token_u8(&err, dev, 5); /* Enabled */ | |
1493 | add_token_u8(&err, dev, OPAL_TRUE); | |
1494 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1495 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1496 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1497 | |
1498 | if (err) { | |
591c59d1 | 1499 | pr_debug("Error building Activate UserN command.\n"); |
455a7b23 SB |
1500 | return err; |
1501 | } | |
1502 | ||
1503 | return finalize_and_send(dev, parse_and_check_status); | |
1504 | } | |
1505 | ||
eed64951 | 1506 | static int erase_locking_range(struct opal_dev *dev, void *data) |
455a7b23 | 1507 | { |
eed64951 | 1508 | struct opal_session_info *session = data; |
455a7b23 | 1509 | u8 uid[OPAL_UID_LENGTH]; |
e8b29224 | 1510 | int err; |
455a7b23 SB |
1511 | |
1512 | if (build_locking_range(uid, sizeof(uid), session->opal_key.lr) < 0) | |
1513 | return -ERANGE; | |
1514 | ||
e8b29224 | 1515 | err = cmd_start(dev, uid, opalmethod[OPAL_ERASE]); |
455a7b23 SB |
1516 | |
1517 | if (err) { | |
591c59d1 | 1518 | pr_debug("Error building Erase Locking Range Command.\n"); |
455a7b23 SB |
1519 | return err; |
1520 | } | |
1521 | return finalize_and_send(dev, parse_and_check_status); | |
1522 | } | |
1523 | ||
eed64951 | 1524 | static int set_mbr_done(struct opal_dev *dev, void *data) |
455a7b23 | 1525 | { |
eed64951 | 1526 | u8 *mbr_done_tf = data; |
e8b29224 | 1527 | int err; |
455a7b23 | 1528 | |
e8b29224 DK |
1529 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
1530 | opalmethod[OPAL_SET]); | |
455a7b23 | 1531 | |
455a7b23 SB |
1532 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1533 | add_token_u8(&err, dev, OPAL_VALUES); | |
1534 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1535 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1536 | add_token_u8(&err, dev, OPAL_MBRDONE); |
eed64951 | 1537 | add_token_u8(&err, dev, *mbr_done_tf); /* Done T or F */ |
455a7b23 SB |
1538 | add_token_u8(&err, dev, OPAL_ENDNAME); |
1539 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1540 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1541 | |
1542 | if (err) { | |
591c59d1 | 1543 | pr_debug("Error Building set MBR Done command\n"); |
455a7b23 SB |
1544 | return err; |
1545 | } | |
1546 | ||
1547 | return finalize_and_send(dev, parse_and_check_status); | |
1548 | } | |
1549 | ||
eed64951 | 1550 | static int set_mbr_enable_disable(struct opal_dev *dev, void *data) |
455a7b23 | 1551 | { |
eed64951 | 1552 | u8 *mbr_en_dis = data; |
e8b29224 | 1553 | int err; |
455a7b23 | 1554 | |
e8b29224 DK |
1555 | err = cmd_start(dev, opaluid[OPAL_MBRCONTROL], |
1556 | opalmethod[OPAL_SET]); | |
455a7b23 | 1557 | |
455a7b23 SB |
1558 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1559 | add_token_u8(&err, dev, OPAL_VALUES); | |
1560 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1561 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1562 | add_token_u8(&err, dev, OPAL_MBRENABLE); |
eed64951 | 1563 | add_token_u8(&err, dev, *mbr_en_dis); |
455a7b23 SB |
1564 | add_token_u8(&err, dev, OPAL_ENDNAME); |
1565 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1566 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1567 | |
1568 | if (err) { | |
591c59d1 | 1569 | pr_debug("Error Building set MBR done command\n"); |
455a7b23 SB |
1570 | return err; |
1571 | } | |
1572 | ||
1573 | return finalize_and_send(dev, parse_and_check_status); | |
1574 | } | |
1575 | ||
a9b25b4c JR |
1576 | static int write_shadow_mbr(struct opal_dev *dev, void *data) |
1577 | { | |
1578 | struct opal_shadow_mbr *shadow = data; | |
1579 | const u8 __user *src; | |
1580 | u8 *dst; | |
1581 | size_t off = 0; | |
1582 | u64 len; | |
1583 | int err = 0; | |
1584 | ||
ff91064e JR |
1585 | /* do we fit in the available shadow mbr space? */ |
1586 | err = generic_get_table_info(dev, OPAL_MBR, OPAL_TABLE_ROWS); | |
1587 | if (err) { | |
1588 | pr_debug("MBR: could not get shadow size\n"); | |
1589 | return err; | |
1590 | } | |
1591 | ||
1592 | len = response_get_u64(&dev->parsed, 4); | |
1593 | if (shadow->size > len || shadow->offset > len - shadow->size) { | |
1594 | pr_debug("MBR: does not fit in shadow (%llu vs. %llu)\n", | |
1595 | shadow->offset + shadow->size, len); | |
1596 | return -ENOSPC; | |
1597 | } | |
1598 | ||
a9b25b4c JR |
1599 | /* do the actual transmission(s) */ |
1600 | src = (u8 __user *)(uintptr_t)shadow->data; | |
1601 | while (off < shadow->size) { | |
1602 | err = cmd_start(dev, opaluid[OPAL_MBR], opalmethod[OPAL_SET]); | |
1603 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1604 | add_token_u8(&err, dev, OPAL_WHERE); | |
1605 | add_token_u64(&err, dev, shadow->offset + off); | |
1606 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1607 | ||
1608 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1609 | add_token_u8(&err, dev, OPAL_VALUES); | |
1610 | ||
1611 | /* | |
1612 | * The bytestring header is either 1 or 2 bytes, so assume 2. | |
1613 | * There also needs to be enough space to accommodate the | |
1614 | * trailing OPAL_ENDNAME (1 byte) and tokens added by | |
1615 | * cmd_finalize. | |
1616 | */ | |
1617 | len = min(remaining_size(dev) - (2+1+CMD_FINALIZE_BYTES_NEEDED), | |
1618 | (size_t)(shadow->size - off)); | |
1619 | pr_debug("MBR: write bytes %zu+%llu/%llu\n", | |
1620 | off, len, shadow->size); | |
1621 | ||
1622 | dst = add_bytestring_header(&err, dev, len); | |
1623 | if (!dst) | |
1624 | break; | |
1625 | if (copy_from_user(dst, src + off, len)) | |
1626 | err = -EFAULT; | |
1627 | dev->pos += len; | |
1628 | ||
1629 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1630 | if (err) | |
1631 | break; | |
1632 | ||
1633 | err = finalize_and_send(dev, parse_and_check_status); | |
1634 | if (err) | |
1635 | break; | |
1636 | ||
1637 | off += len; | |
1638 | } | |
1639 | return err; | |
1640 | } | |
1641 | ||
455a7b23 SB |
1642 | static int generic_pw_cmd(u8 *key, size_t key_len, u8 *cpin_uid, |
1643 | struct opal_dev *dev) | |
1644 | { | |
e8b29224 | 1645 | int err; |
455a7b23 | 1646 | |
e8b29224 | 1647 | err = cmd_start(dev, cpin_uid, opalmethod[OPAL_SET]); |
455a7b23 | 1648 | |
455a7b23 SB |
1649 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1650 | add_token_u8(&err, dev, OPAL_VALUES); | |
1651 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1652 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
372be408 | 1653 | add_token_u8(&err, dev, OPAL_PIN); |
455a7b23 SB |
1654 | add_token_bytestring(&err, dev, key, key_len); |
1655 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1656 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1657 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1658 | |
1659 | return err; | |
1660 | } | |
1661 | ||
eed64951 | 1662 | static int set_new_pw(struct opal_dev *dev, void *data) |
455a7b23 SB |
1663 | { |
1664 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1665 | struct opal_session_info *usr = data; |
455a7b23 SB |
1666 | |
1667 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_ADMIN1], OPAL_UID_LENGTH); | |
1668 | ||
1669 | if (usr->who != OPAL_ADMIN1) { | |
1670 | cpin_uid[5] = 0x03; | |
1671 | if (usr->sum) | |
1672 | cpin_uid[7] = usr->opal_key.lr + 1; | |
1673 | else | |
1674 | cpin_uid[7] = usr->who; | |
1675 | } | |
1676 | ||
1677 | if (generic_pw_cmd(usr->opal_key.key, usr->opal_key.key_len, | |
1678 | cpin_uid, dev)) { | |
591c59d1 | 1679 | pr_debug("Error building set password command.\n"); |
455a7b23 SB |
1680 | return -ERANGE; |
1681 | } | |
1682 | ||
1683 | return finalize_and_send(dev, parse_and_check_status); | |
1684 | } | |
1685 | ||
eed64951 | 1686 | static int set_sid_cpin_pin(struct opal_dev *dev, void *data) |
455a7b23 SB |
1687 | { |
1688 | u8 cpin_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1689 | struct opal_key *key = data; |
455a7b23 SB |
1690 | |
1691 | memcpy(cpin_uid, opaluid[OPAL_C_PIN_SID], OPAL_UID_LENGTH); | |
1692 | ||
1693 | if (generic_pw_cmd(key->key, key->key_len, cpin_uid, dev)) { | |
591c59d1 | 1694 | pr_debug("Error building Set SID cpin\n"); |
455a7b23 SB |
1695 | return -ERANGE; |
1696 | } | |
1697 | return finalize_and_send(dev, parse_and_check_status); | |
1698 | } | |
1699 | ||
eed64951 | 1700 | static int add_user_to_lr(struct opal_dev *dev, void *data) |
455a7b23 SB |
1701 | { |
1702 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1703 | u8 user_uid[OPAL_UID_LENGTH]; | |
eed64951 | 1704 | struct opal_lock_unlock *lkul = data; |
e8b29224 | 1705 | int err; |
455a7b23 | 1706 | |
455a7b23 SB |
1707 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_RDLOCKED], |
1708 | OPAL_UID_LENGTH); | |
1709 | ||
1710 | if (lkul->l_state == OPAL_RW) | |
1711 | memcpy(lr_buffer, opaluid[OPAL_LOCKINGRANGE_ACE_WRLOCKED], | |
1712 | OPAL_UID_LENGTH); | |
1713 | ||
1714 | lr_buffer[7] = lkul->session.opal_key.lr; | |
1715 | ||
1716 | memcpy(user_uid, opaluid[OPAL_USER1_UID], OPAL_UID_LENGTH); | |
1717 | ||
1718 | user_uid[7] = lkul->session.who; | |
1719 | ||
e8b29224 | 1720 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
455a7b23 | 1721 | |
455a7b23 SB |
1722 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1723 | add_token_u8(&err, dev, OPAL_VALUES); | |
1724 | ||
1725 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1726 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1727 | add_token_u8(&err, dev, 3); | |
1728 | ||
1729 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1730 | ||
1731 | ||
1732 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1733 | add_token_bytestring(&err, dev, | |
1734 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1735 | OPAL_UID_LENGTH/2); | |
1736 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1737 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1738 | ||
1739 | ||
1740 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1741 | add_token_bytestring(&err, dev, | |
1742 | opaluid[OPAL_HALF_UID_AUTHORITY_OBJ_REF], | |
1743 | OPAL_UID_LENGTH/2); | |
1744 | add_token_bytestring(&err, dev, user_uid, OPAL_UID_LENGTH); | |
1745 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1746 | ||
1747 | ||
1748 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1749 | add_token_bytestring(&err, dev, opaluid[OPAL_HALF_UID_BOOLEAN_ACE], | |
1750 | OPAL_UID_LENGTH/2); | |
1751 | add_token_u8(&err, dev, 1); | |
1752 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1753 | ||
1754 | ||
1755 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1756 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1757 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1758 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1759 | |
1760 | if (err) { | |
591c59d1 | 1761 | pr_debug("Error building add user to locking range command.\n"); |
455a7b23 SB |
1762 | return err; |
1763 | } | |
1764 | ||
1765 | return finalize_and_send(dev, parse_and_check_status); | |
1766 | } | |
1767 | ||
eed64951 | 1768 | static int lock_unlock_locking_range(struct opal_dev *dev, void *data) |
455a7b23 SB |
1769 | { |
1770 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
eed64951 | 1771 | struct opal_lock_unlock *lkul = data; |
455a7b23 SB |
1772 | u8 read_locked = 1, write_locked = 1; |
1773 | int err = 0; | |
1774 | ||
455a7b23 SB |
1775 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
1776 | lkul->session.opal_key.lr) < 0) | |
1777 | return -ERANGE; | |
1778 | ||
1779 | switch (lkul->l_state) { | |
1780 | case OPAL_RO: | |
1781 | read_locked = 0; | |
1782 | write_locked = 1; | |
1783 | break; | |
1784 | case OPAL_RW: | |
1785 | read_locked = 0; | |
1786 | write_locked = 0; | |
1787 | break; | |
1788 | case OPAL_LK: | |
1e815b33 | 1789 | /* vars are initialized to locked */ |
455a7b23 SB |
1790 | break; |
1791 | default: | |
591c59d1 | 1792 | pr_debug("Tried to set an invalid locking state... returning to uland\n"); |
455a7b23 SB |
1793 | return OPAL_INVAL_PARAM; |
1794 | } | |
1795 | ||
e8b29224 DK |
1796 | err = cmd_start(dev, lr_buffer, opalmethod[OPAL_SET]); |
1797 | ||
455a7b23 SB |
1798 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1799 | add_token_u8(&err, dev, OPAL_VALUES); | |
1800 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1801 | ||
1802 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1803 | add_token_u8(&err, dev, OPAL_READLOCKED); | |
1804 | add_token_u8(&err, dev, read_locked); | |
1805 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1806 | ||
1807 | add_token_u8(&err, dev, OPAL_STARTNAME); | |
1808 | add_token_u8(&err, dev, OPAL_WRITELOCKED); | |
1809 | add_token_u8(&err, dev, write_locked); | |
1810 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
1811 | ||
1812 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1813 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1814 | |
1815 | if (err) { | |
591c59d1 | 1816 | pr_debug("Error building SET command.\n"); |
455a7b23 SB |
1817 | return err; |
1818 | } | |
1819 | return finalize_and_send(dev, parse_and_check_status); | |
1820 | } | |
1821 | ||
1822 | ||
eed64951 | 1823 | static int lock_unlock_locking_range_sum(struct opal_dev *dev, void *data) |
455a7b23 SB |
1824 | { |
1825 | u8 lr_buffer[OPAL_UID_LENGTH]; | |
1826 | u8 read_locked = 1, write_locked = 1; | |
eed64951 | 1827 | struct opal_lock_unlock *lkul = data; |
455a7b23 SB |
1828 | int ret; |
1829 | ||
1830 | clear_opal_cmd(dev); | |
1831 | set_comid(dev, dev->comid); | |
1832 | ||
455a7b23 SB |
1833 | if (build_locking_range(lr_buffer, sizeof(lr_buffer), |
1834 | lkul->session.opal_key.lr) < 0) | |
1835 | return -ERANGE; | |
1836 | ||
1837 | switch (lkul->l_state) { | |
1838 | case OPAL_RO: | |
1839 | read_locked = 0; | |
1840 | write_locked = 1; | |
1841 | break; | |
1842 | case OPAL_RW: | |
1843 | read_locked = 0; | |
1844 | write_locked = 0; | |
1845 | break; | |
1846 | case OPAL_LK: | |
1e815b33 | 1847 | /* vars are initialized to locked */ |
455a7b23 SB |
1848 | break; |
1849 | default: | |
591c59d1 | 1850 | pr_debug("Tried to set an invalid locking state.\n"); |
455a7b23 SB |
1851 | return OPAL_INVAL_PARAM; |
1852 | } | |
1853 | ret = generic_lr_enable_disable(dev, lr_buffer, 1, 1, | |
1854 | read_locked, write_locked); | |
1855 | ||
1856 | if (ret < 0) { | |
591c59d1 | 1857 | pr_debug("Error building SET command.\n"); |
455a7b23 SB |
1858 | return ret; |
1859 | } | |
1860 | return finalize_and_send(dev, parse_and_check_status); | |
1861 | } | |
1862 | ||
eed64951 | 1863 | static int activate_lsp(struct opal_dev *dev, void *data) |
455a7b23 | 1864 | { |
eed64951 | 1865 | struct opal_lr_act *opal_act = data; |
455a7b23 SB |
1866 | u8 user_lr[OPAL_UID_LENGTH]; |
1867 | u8 uint_3 = 0x83; | |
e8b29224 | 1868 | int err, i; |
455a7b23 | 1869 | |
e8b29224 DK |
1870 | err = cmd_start(dev, opaluid[OPAL_LOCKINGSP_UID], |
1871 | opalmethod[OPAL_ACTIVATE]); | |
455a7b23 SB |
1872 | |
1873 | if (opal_act->sum) { | |
1874 | err = build_locking_range(user_lr, sizeof(user_lr), | |
1875 | opal_act->lr[0]); | |
1876 | if (err) | |
1877 | return err; | |
1878 | ||
455a7b23 SB |
1879 | add_token_u8(&err, dev, OPAL_STARTNAME); |
1880 | add_token_u8(&err, dev, uint_3); | |
1881 | add_token_u8(&err, dev, 6); | |
1882 | add_token_u8(&err, dev, 0); | |
1883 | add_token_u8(&err, dev, 0); | |
1884 | ||
1885 | add_token_u8(&err, dev, OPAL_STARTLIST); | |
1886 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1887 | for (i = 1; i < opal_act->num_lrs; i++) { | |
1888 | user_lr[7] = opal_act->lr[i]; | |
1889 | add_token_bytestring(&err, dev, user_lr, OPAL_UID_LENGTH); | |
1890 | } | |
1891 | add_token_u8(&err, dev, OPAL_ENDLIST); | |
1892 | add_token_u8(&err, dev, OPAL_ENDNAME); | |
455a7b23 SB |
1893 | } |
1894 | ||
1895 | if (err) { | |
591c59d1 | 1896 | pr_debug("Error building Activate LockingSP command.\n"); |
455a7b23 SB |
1897 | return err; |
1898 | } | |
1899 | ||
1900 | return finalize_and_send(dev, parse_and_check_status); | |
1901 | } | |
1902 | ||
3fff234b DK |
1903 | /* Determine if we're in the Manufactured Inactive or Active state */ |
1904 | static int get_lsp_lifecycle(struct opal_dev *dev, void *data) | |
455a7b23 SB |
1905 | { |
1906 | u8 lc_status; | |
3fff234b | 1907 | int err; |
455a7b23 | 1908 | |
3fff234b DK |
1909 | err = generic_get_column(dev, opaluid[OPAL_LOCKINGSP_UID], |
1910 | OPAL_LIFECYCLE); | |
1911 | if (err) | |
1912 | return err; | |
455a7b23 SB |
1913 | |
1914 | lc_status = response_get_u64(&dev->parsed, 4); | |
1e815b33 | 1915 | /* 0x08 is Manufactured Inactive */ |
455a7b23 SB |
1916 | /* 0x09 is Manufactured */ |
1917 | if (lc_status != OPAL_MANUFACTURED_INACTIVE) { | |
591c59d1 | 1918 | pr_debug("Couldn't determine the status of the Lifecycle state\n"); |
455a7b23 SB |
1919 | return -ENODEV; |
1920 | } | |
1921 | ||
1922 | return 0; | |
1923 | } | |
1924 | ||
3fff234b | 1925 | static int get_msid_cpin_pin(struct opal_dev *dev, void *data) |
455a7b23 SB |
1926 | { |
1927 | const char *msid_pin; | |
1928 | size_t strlen; | |
3fff234b | 1929 | int err; |
455a7b23 | 1930 | |
3fff234b DK |
1931 | err = generic_get_column(dev, opaluid[OPAL_C_PIN_MSID], OPAL_PIN); |
1932 | if (err) | |
1933 | return err; | |
455a7b23 SB |
1934 | |
1935 | strlen = response_get_string(&dev->parsed, 4, &msid_pin); | |
1936 | if (!msid_pin) { | |
3fff234b | 1937 | pr_debug("Couldn't extract MSID_CPIN from response\n"); |
455a7b23 SB |
1938 | return OPAL_INVAL_PARAM; |
1939 | } | |
1940 | ||
1941 | dev->prev_data = kmemdup(msid_pin, strlen, GFP_KERNEL); | |
1942 | if (!dev->prev_data) | |
1943 | return -ENOMEM; | |
1944 | ||
1945 | dev->prev_d_len = strlen; | |
1946 | ||
1947 | return 0; | |
1948 | } | |
1949 | ||
eed64951 | 1950 | static int end_opal_session(struct opal_dev *dev, void *data) |
455a7b23 SB |
1951 | { |
1952 | int err = 0; | |
1953 | ||
1954 | clear_opal_cmd(dev); | |
455a7b23 SB |
1955 | set_comid(dev, dev->comid); |
1956 | add_token_u8(&err, dev, OPAL_ENDOFSESSION); | |
455a7b23 | 1957 | |
eed64951 JD |
1958 | if (err < 0) |
1959 | return err; | |
455a7b23 SB |
1960 | return finalize_and_send(dev, end_session_cont); |
1961 | } | |
1962 | ||
1963 | static int end_opal_session_error(struct opal_dev *dev) | |
1964 | { | |
0af2648e DK |
1965 | const struct opal_step error_end_session = { |
1966 | end_opal_session, | |
455a7b23 | 1967 | }; |
0af2648e | 1968 | return execute_step(dev, &error_end_session, 0); |
455a7b23 SB |
1969 | } |
1970 | ||
3db87236 | 1971 | static inline void setup_opal_dev(struct opal_dev *dev) |
455a7b23 | 1972 | { |
455a7b23 SB |
1973 | dev->tsn = 0; |
1974 | dev->hsn = 0; | |
455a7b23 SB |
1975 | dev->prev_data = NULL; |
1976 | } | |
1977 | ||
1978 | static int check_opal_support(struct opal_dev *dev) | |
1979 | { | |
455a7b23 SB |
1980 | int ret; |
1981 | ||
1982 | mutex_lock(&dev->dev_lock); | |
3db87236 | 1983 | setup_opal_dev(dev); |
0af2648e | 1984 | ret = opal_discovery0_step(dev); |
455a7b23 SB |
1985 | dev->supported = !ret; |
1986 | mutex_unlock(&dev->dev_lock); | |
1987 | return ret; | |
1988 | } | |
1989 | ||
7d6d1578 SB |
1990 | static void clean_opal_dev(struct opal_dev *dev) |
1991 | { | |
1992 | ||
1993 | struct opal_suspend_data *suspend, *next; | |
1994 | ||
1995 | mutex_lock(&dev->dev_lock); | |
1996 | list_for_each_entry_safe(suspend, next, &dev->unlk_lst, node) { | |
1997 | list_del(&suspend->node); | |
1998 | kfree(suspend); | |
1999 | } | |
2000 | mutex_unlock(&dev->dev_lock); | |
2001 | } | |
2002 | ||
2003 | void free_opal_dev(struct opal_dev *dev) | |
2004 | { | |
2005 | if (!dev) | |
2006 | return; | |
2007 | clean_opal_dev(dev); | |
2008 | kfree(dev); | |
2009 | } | |
2010 | EXPORT_SYMBOL(free_opal_dev); | |
2011 | ||
4f1244c8 | 2012 | struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv) |
455a7b23 | 2013 | { |
4f1244c8 CH |
2014 | struct opal_dev *dev; |
2015 | ||
2016 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
2017 | if (!dev) | |
2018 | return NULL; | |
2019 | ||
2020 | INIT_LIST_HEAD(&dev->unlk_lst); | |
2021 | mutex_init(&dev->dev_lock); | |
2022 | dev->data = data; | |
2023 | dev->send_recv = send_recv; | |
2024 | if (check_opal_support(dev) != 0) { | |
f5b37b7c | 2025 | pr_debug("Opal is not supported on this device\n"); |
4f1244c8 CH |
2026 | kfree(dev); |
2027 | return NULL; | |
2028 | } | |
2029 | return dev; | |
455a7b23 SB |
2030 | } |
2031 | EXPORT_SYMBOL(init_opal_dev); | |
2032 | ||
2033 | static int opal_secure_erase_locking_range(struct opal_dev *dev, | |
2034 | struct opal_session_info *opal_session) | |
2035 | { | |
eed64951 | 2036 | const struct opal_step erase_steps[] = { |
eed64951 JD |
2037 | { start_auth_opal_session, opal_session }, |
2038 | { get_active_key, &opal_session->opal_key.lr }, | |
2039 | { gen_key, }, | |
3db87236 | 2040 | { end_opal_session, } |
455a7b23 SB |
2041 | }; |
2042 | int ret; | |
2043 | ||
2044 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2045 | setup_opal_dev(dev); |
a80f36cc | 2046 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
455a7b23 SB |
2047 | mutex_unlock(&dev->dev_lock); |
2048 | return ret; | |
2049 | } | |
2050 | ||
2051 | static int opal_erase_locking_range(struct opal_dev *dev, | |
2052 | struct opal_session_info *opal_session) | |
2053 | { | |
eed64951 | 2054 | const struct opal_step erase_steps[] = { |
eed64951 JD |
2055 | { start_auth_opal_session, opal_session }, |
2056 | { erase_locking_range, opal_session }, | |
3db87236 | 2057 | { end_opal_session, } |
455a7b23 SB |
2058 | }; |
2059 | int ret; | |
2060 | ||
2061 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2062 | setup_opal_dev(dev); |
a80f36cc | 2063 | ret = execute_steps(dev, erase_steps, ARRAY_SIZE(erase_steps)); |
455a7b23 SB |
2064 | mutex_unlock(&dev->dev_lock); |
2065 | return ret; | |
2066 | } | |
2067 | ||
2068 | static int opal_enable_disable_shadow_mbr(struct opal_dev *dev, | |
2069 | struct opal_mbr_data *opal_mbr) | |
2070 | { | |
78bf4735 DK |
2071 | u8 enable_disable = opal_mbr->enable_disable == OPAL_MBR_ENABLE ? |
2072 | OPAL_TRUE : OPAL_FALSE; | |
2073 | ||
eed64951 | 2074 | const struct opal_step mbr_steps[] = { |
eed64951 | 2075 | { start_admin1LSP_opal_session, &opal_mbr->key }, |
78bf4735 | 2076 | { set_mbr_done, &enable_disable }, |
eed64951 JD |
2077 | { end_opal_session, }, |
2078 | { start_admin1LSP_opal_session, &opal_mbr->key }, | |
78bf4735 | 2079 | { set_mbr_enable_disable, &enable_disable }, |
3db87236 | 2080 | { end_opal_session, } |
455a7b23 SB |
2081 | }; |
2082 | int ret; | |
2083 | ||
2084 | if (opal_mbr->enable_disable != OPAL_MBR_ENABLE && | |
2085 | opal_mbr->enable_disable != OPAL_MBR_DISABLE) | |
2086 | return -EINVAL; | |
2087 | ||
2088 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2089 | setup_opal_dev(dev); |
a80f36cc | 2090 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); |
455a7b23 SB |
2091 | mutex_unlock(&dev->dev_lock); |
2092 | return ret; | |
2093 | } | |
2094 | ||
c9888443 JR |
2095 | static int opal_set_mbr_done(struct opal_dev *dev, |
2096 | struct opal_mbr_done *mbr_done) | |
2097 | { | |
2098 | u8 mbr_done_tf = mbr_done->done_flag == OPAL_MBR_DONE ? | |
2099 | OPAL_TRUE : OPAL_FALSE; | |
2100 | ||
2101 | const struct opal_step mbr_steps[] = { | |
2102 | { start_admin1LSP_opal_session, &mbr_done->key }, | |
2103 | { set_mbr_done, &mbr_done_tf }, | |
2104 | { end_opal_session, } | |
2105 | }; | |
2106 | int ret; | |
2107 | ||
2108 | if (mbr_done->done_flag != OPAL_MBR_DONE && | |
2109 | mbr_done->done_flag != OPAL_MBR_NOT_DONE) | |
2110 | return -EINVAL; | |
2111 | ||
2112 | mutex_lock(&dev->dev_lock); | |
2113 | setup_opal_dev(dev); | |
2114 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); | |
2115 | mutex_unlock(&dev->dev_lock); | |
2116 | return ret; | |
2117 | } | |
2118 | ||
a9b25b4c JR |
2119 | static int opal_write_shadow_mbr(struct opal_dev *dev, |
2120 | struct opal_shadow_mbr *info) | |
2121 | { | |
2122 | const struct opal_step mbr_steps[] = { | |
2123 | { start_admin1LSP_opal_session, &info->key }, | |
2124 | { write_shadow_mbr, info }, | |
2125 | { end_opal_session, } | |
2126 | }; | |
2127 | int ret; | |
2128 | ||
2129 | if (info->size == 0) | |
2130 | return 0; | |
2131 | ||
2132 | mutex_lock(&dev->dev_lock); | |
2133 | setup_opal_dev(dev); | |
2134 | ret = execute_steps(dev, mbr_steps, ARRAY_SIZE(mbr_steps)); | |
2135 | mutex_unlock(&dev->dev_lock); | |
2136 | return ret; | |
2137 | } | |
2138 | ||
455a7b23 SB |
2139 | static int opal_save(struct opal_dev *dev, struct opal_lock_unlock *lk_unlk) |
2140 | { | |
2141 | struct opal_suspend_data *suspend; | |
2142 | ||
2143 | suspend = kzalloc(sizeof(*suspend), GFP_KERNEL); | |
2144 | if (!suspend) | |
2145 | return -ENOMEM; | |
2146 | ||
2147 | suspend->unlk = *lk_unlk; | |
2148 | suspend->lr = lk_unlk->session.opal_key.lr; | |
2149 | ||
2150 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2151 | setup_opal_dev(dev); |
455a7b23 SB |
2152 | add_suspend_info(dev, suspend); |
2153 | mutex_unlock(&dev->dev_lock); | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | static int opal_add_user_to_lr(struct opal_dev *dev, | |
2158 | struct opal_lock_unlock *lk_unlk) | |
2159 | { | |
eed64951 | 2160 | const struct opal_step steps[] = { |
eed64951 JD |
2161 | { start_admin1LSP_opal_session, &lk_unlk->session.opal_key }, |
2162 | { add_user_to_lr, lk_unlk }, | |
3db87236 | 2163 | { end_opal_session, } |
455a7b23 SB |
2164 | }; |
2165 | int ret; | |
2166 | ||
2167 | if (lk_unlk->l_state != OPAL_RO && | |
2168 | lk_unlk->l_state != OPAL_RW) { | |
591c59d1 | 2169 | pr_debug("Locking state was not RO or RW\n"); |
455a7b23 SB |
2170 | return -EINVAL; |
2171 | } | |
b0bfdfc2 | 2172 | if (lk_unlk->session.who < OPAL_USER1 || |
455a7b23 | 2173 | lk_unlk->session.who > OPAL_USER9) { |
591c59d1 SB |
2174 | pr_debug("Authority was not within the range of users: %d\n", |
2175 | lk_unlk->session.who); | |
455a7b23 SB |
2176 | return -EINVAL; |
2177 | } | |
2178 | if (lk_unlk->session.sum) { | |
591c59d1 SB |
2179 | pr_debug("%s not supported in sum. Use setup locking range\n", |
2180 | __func__); | |
455a7b23 SB |
2181 | return -EINVAL; |
2182 | } | |
2183 | ||
2184 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2185 | setup_opal_dev(dev); |
a80f36cc | 2186 | ret = execute_steps(dev, steps, ARRAY_SIZE(steps)); |
455a7b23 SB |
2187 | mutex_unlock(&dev->dev_lock); |
2188 | return ret; | |
2189 | } | |
2190 | ||
5e4c7cf6 | 2191 | static int opal_reverttper(struct opal_dev *dev, struct opal_key *opal, bool psid) |
455a7b23 | 2192 | { |
5e4c7cf6 | 2193 | /* controller will terminate session */ |
eed64951 | 2194 | const struct opal_step revert_steps[] = { |
eed64951 | 2195 | { start_SIDASP_opal_session, opal }, |
5e4c7cf6 | 2196 | { revert_tper, } |
455a7b23 | 2197 | }; |
5e4c7cf6 RR |
2198 | const struct opal_step psid_revert_steps[] = { |
2199 | { start_PSID_opal_session, opal }, | |
2200 | { revert_tper, } | |
2201 | }; | |
2202 | ||
455a7b23 SB |
2203 | int ret; |
2204 | ||
2205 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2206 | setup_opal_dev(dev); |
5e4c7cf6 RR |
2207 | if (psid) |
2208 | ret = execute_steps(dev, psid_revert_steps, | |
2209 | ARRAY_SIZE(psid_revert_steps)); | |
2210 | else | |
2211 | ret = execute_steps(dev, revert_steps, | |
2212 | ARRAY_SIZE(revert_steps)); | |
455a7b23 | 2213 | mutex_unlock(&dev->dev_lock); |
7d6d1578 SB |
2214 | |
2215 | /* | |
2216 | * If we successfully reverted lets clean | |
2217 | * any saved locking ranges. | |
2218 | */ | |
2219 | if (!ret) | |
2220 | clean_opal_dev(dev); | |
2221 | ||
455a7b23 SB |
2222 | return ret; |
2223 | } | |
2224 | ||
eed64951 JD |
2225 | static int __opal_lock_unlock(struct opal_dev *dev, |
2226 | struct opal_lock_unlock *lk_unlk) | |
455a7b23 | 2227 | { |
eed64951 | 2228 | const struct opal_step unlock_steps[] = { |
eed64951 JD |
2229 | { start_auth_opal_session, &lk_unlk->session }, |
2230 | { lock_unlock_locking_range, lk_unlk }, | |
3db87236 | 2231 | { end_opal_session, } |
455a7b23 | 2232 | }; |
eed64951 | 2233 | const struct opal_step unlock_sum_steps[] = { |
eed64951 JD |
2234 | { start_auth_opal_session, &lk_unlk->session }, |
2235 | { lock_unlock_locking_range_sum, lk_unlk }, | |
3db87236 | 2236 | { end_opal_session, } |
455a7b23 SB |
2237 | }; |
2238 | ||
3db87236 | 2239 | if (lk_unlk->session.sum) |
a80f36cc DK |
2240 | return execute_steps(dev, unlock_sum_steps, |
2241 | ARRAY_SIZE(unlock_sum_steps)); | |
3db87236 | 2242 | else |
a80f36cc DK |
2243 | return execute_steps(dev, unlock_steps, |
2244 | ARRAY_SIZE(unlock_steps)); | |
455a7b23 SB |
2245 | } |
2246 | ||
dbec491b SB |
2247 | static int __opal_set_mbr_done(struct opal_dev *dev, struct opal_key *key) |
2248 | { | |
78bf4735 | 2249 | u8 mbr_done_tf = OPAL_TRUE; |
1e815b33 | 2250 | const struct opal_step mbrdone_step[] = { |
dbec491b SB |
2251 | { start_admin1LSP_opal_session, key }, |
2252 | { set_mbr_done, &mbr_done_tf }, | |
3db87236 | 2253 | { end_opal_session, } |
dbec491b SB |
2254 | }; |
2255 | ||
a80f36cc | 2256 | return execute_steps(dev, mbrdone_step, ARRAY_SIZE(mbrdone_step)); |
dbec491b SB |
2257 | } |
2258 | ||
eed64951 JD |
2259 | static int opal_lock_unlock(struct opal_dev *dev, |
2260 | struct opal_lock_unlock *lk_unlk) | |
455a7b23 | 2261 | { |
455a7b23 SB |
2262 | int ret; |
2263 | ||
15ddffcb | 2264 | if (lk_unlk->session.who > OPAL_USER9) |
455a7b23 SB |
2265 | return -EINVAL; |
2266 | ||
2267 | mutex_lock(&dev->dev_lock); | |
eed64951 | 2268 | ret = __opal_lock_unlock(dev, lk_unlk); |
455a7b23 SB |
2269 | mutex_unlock(&dev->dev_lock); |
2270 | return ret; | |
2271 | } | |
2272 | ||
2273 | static int opal_take_ownership(struct opal_dev *dev, struct opal_key *opal) | |
2274 | { | |
eed64951 | 2275 | const struct opal_step owner_steps[] = { |
eed64951 JD |
2276 | { start_anybodyASP_opal_session, }, |
2277 | { get_msid_cpin_pin, }, | |
2278 | { end_opal_session, }, | |
2279 | { start_SIDASP_opal_session, opal }, | |
2280 | { set_sid_cpin_pin, opal }, | |
3db87236 | 2281 | { end_opal_session, } |
455a7b23 | 2282 | }; |
455a7b23 SB |
2283 | int ret; |
2284 | ||
2285 | if (!dev) | |
2286 | return -ENODEV; | |
2287 | ||
2288 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2289 | setup_opal_dev(dev); |
a80f36cc | 2290 | ret = execute_steps(dev, owner_steps, ARRAY_SIZE(owner_steps)); |
455a7b23 SB |
2291 | mutex_unlock(&dev->dev_lock); |
2292 | return ret; | |
2293 | } | |
2294 | ||
1e815b33 DK |
2295 | static int opal_activate_lsp(struct opal_dev *dev, |
2296 | struct opal_lr_act *opal_lr_act) | |
455a7b23 | 2297 | { |
eed64951 | 2298 | const struct opal_step active_steps[] = { |
eed64951 JD |
2299 | { start_SIDASP_opal_session, &opal_lr_act->key }, |
2300 | { get_lsp_lifecycle, }, | |
2301 | { activate_lsp, opal_lr_act }, | |
3db87236 | 2302 | { end_opal_session, } |
455a7b23 SB |
2303 | }; |
2304 | int ret; | |
2305 | ||
2306 | if (!opal_lr_act->num_lrs || opal_lr_act->num_lrs > OPAL_MAX_LRS) | |
2307 | return -EINVAL; | |
2308 | ||
2309 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2310 | setup_opal_dev(dev); |
a80f36cc | 2311 | ret = execute_steps(dev, active_steps, ARRAY_SIZE(active_steps)); |
455a7b23 SB |
2312 | mutex_unlock(&dev->dev_lock); |
2313 | return ret; | |
2314 | } | |
2315 | ||
2316 | static int opal_setup_locking_range(struct opal_dev *dev, | |
2317 | struct opal_user_lr_setup *opal_lrs) | |
2318 | { | |
eed64951 | 2319 | const struct opal_step lr_steps[] = { |
eed64951 JD |
2320 | { start_auth_opal_session, &opal_lrs->session }, |
2321 | { setup_locking_range, opal_lrs }, | |
3db87236 | 2322 | { end_opal_session, } |
455a7b23 SB |
2323 | }; |
2324 | int ret; | |
2325 | ||
2326 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2327 | setup_opal_dev(dev); |
a80f36cc | 2328 | ret = execute_steps(dev, lr_steps, ARRAY_SIZE(lr_steps)); |
455a7b23 SB |
2329 | mutex_unlock(&dev->dev_lock); |
2330 | return ret; | |
2331 | } | |
2332 | ||
2333 | static int opal_set_new_pw(struct opal_dev *dev, struct opal_new_pw *opal_pw) | |
2334 | { | |
eed64951 | 2335 | const struct opal_step pw_steps[] = { |
eed64951 JD |
2336 | { start_auth_opal_session, &opal_pw->session }, |
2337 | { set_new_pw, &opal_pw->new_user_pw }, | |
3db87236 | 2338 | { end_opal_session, } |
455a7b23 | 2339 | }; |
455a7b23 SB |
2340 | int ret; |
2341 | ||
15ddffcb | 2342 | if (opal_pw->session.who > OPAL_USER9 || |
455a7b23 SB |
2343 | opal_pw->new_user_pw.who > OPAL_USER9) |
2344 | return -EINVAL; | |
2345 | ||
2346 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2347 | setup_opal_dev(dev); |
a80f36cc | 2348 | ret = execute_steps(dev, pw_steps, ARRAY_SIZE(pw_steps)); |
455a7b23 SB |
2349 | mutex_unlock(&dev->dev_lock); |
2350 | return ret; | |
2351 | } | |
2352 | ||
2353 | static int opal_activate_user(struct opal_dev *dev, | |
2354 | struct opal_session_info *opal_session) | |
2355 | { | |
eed64951 | 2356 | const struct opal_step act_steps[] = { |
eed64951 JD |
2357 | { start_admin1LSP_opal_session, &opal_session->opal_key }, |
2358 | { internal_activate_user, opal_session }, | |
3db87236 | 2359 | { end_opal_session, } |
455a7b23 | 2360 | }; |
455a7b23 SB |
2361 | int ret; |
2362 | ||
2363 | /* We can't activate Admin1 it's active as manufactured */ | |
b0bfdfc2 | 2364 | if (opal_session->who < OPAL_USER1 || |
455a7b23 | 2365 | opal_session->who > OPAL_USER9) { |
591c59d1 | 2366 | pr_debug("Who was not a valid user: %d\n", opal_session->who); |
455a7b23 SB |
2367 | return -EINVAL; |
2368 | } | |
2369 | ||
2370 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2371 | setup_opal_dev(dev); |
a80f36cc | 2372 | ret = execute_steps(dev, act_steps, ARRAY_SIZE(act_steps)); |
455a7b23 SB |
2373 | mutex_unlock(&dev->dev_lock); |
2374 | return ret; | |
2375 | } | |
2376 | ||
2377 | bool opal_unlock_from_suspend(struct opal_dev *dev) | |
2378 | { | |
2379 | struct opal_suspend_data *suspend; | |
455a7b23 SB |
2380 | bool was_failure = false; |
2381 | int ret = 0; | |
2382 | ||
2383 | if (!dev) | |
2384 | return false; | |
2385 | if (!dev->supported) | |
2386 | return false; | |
2387 | ||
2388 | mutex_lock(&dev->dev_lock); | |
3db87236 | 2389 | setup_opal_dev(dev); |
455a7b23 SB |
2390 | |
2391 | list_for_each_entry(suspend, &dev->unlk_lst, node) { | |
455a7b23 SB |
2392 | dev->tsn = 0; |
2393 | dev->hsn = 0; | |
2394 | ||
eed64951 | 2395 | ret = __opal_lock_unlock(dev, &suspend->unlk); |
455a7b23 | 2396 | if (ret) { |
591c59d1 SB |
2397 | pr_debug("Failed to unlock LR %hhu with sum %d\n", |
2398 | suspend->unlk.session.opal_key.lr, | |
2399 | suspend->unlk.session.sum); | |
455a7b23 SB |
2400 | was_failure = true; |
2401 | } | |
dbec491b SB |
2402 | if (dev->mbr_enabled) { |
2403 | ret = __opal_set_mbr_done(dev, &suspend->unlk.session.opal_key); | |
2404 | if (ret) | |
2405 | pr_debug("Failed to set MBR Done in S3 resume\n"); | |
2406 | } | |
455a7b23 SB |
2407 | } |
2408 | mutex_unlock(&dev->dev_lock); | |
2409 | return was_failure; | |
2410 | } | |
2411 | EXPORT_SYMBOL(opal_unlock_from_suspend); | |
2412 | ||
e225c20e | 2413 | int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *arg) |
455a7b23 | 2414 | { |
e225c20e SB |
2415 | void *p; |
2416 | int ret = -ENOTTY; | |
455a7b23 SB |
2417 | |
2418 | if (!capable(CAP_SYS_ADMIN)) | |
2419 | return -EACCES; | |
4f1244c8 CH |
2420 | if (!dev) |
2421 | return -ENOTSUPP; | |
591c59d1 | 2422 | if (!dev->supported) |
455a7b23 | 2423 | return -ENOTSUPP; |
455a7b23 | 2424 | |
eed64951 | 2425 | p = memdup_user(arg, _IOC_SIZE(cmd)); |
e225c20e SB |
2426 | if (IS_ERR(p)) |
2427 | return PTR_ERR(p); | |
455a7b23 | 2428 | |
e225c20e SB |
2429 | switch (cmd) { |
2430 | case IOC_OPAL_SAVE: | |
2431 | ret = opal_save(dev, p); | |
2432 | break; | |
2433 | case IOC_OPAL_LOCK_UNLOCK: | |
2434 | ret = opal_lock_unlock(dev, p); | |
2435 | break; | |
2436 | case IOC_OPAL_TAKE_OWNERSHIP: | |
2437 | ret = opal_take_ownership(dev, p); | |
2438 | break; | |
2439 | case IOC_OPAL_ACTIVATE_LSP: | |
2440 | ret = opal_activate_lsp(dev, p); | |
2441 | break; | |
2442 | case IOC_OPAL_SET_PW: | |
2443 | ret = opal_set_new_pw(dev, p); | |
2444 | break; | |
2445 | case IOC_OPAL_ACTIVATE_USR: | |
2446 | ret = opal_activate_user(dev, p); | |
2447 | break; | |
2448 | case IOC_OPAL_REVERT_TPR: | |
5e4c7cf6 | 2449 | ret = opal_reverttper(dev, p, false); |
e225c20e SB |
2450 | break; |
2451 | case IOC_OPAL_LR_SETUP: | |
2452 | ret = opal_setup_locking_range(dev, p); | |
2453 | break; | |
2454 | case IOC_OPAL_ADD_USR_TO_LR: | |
2455 | ret = opal_add_user_to_lr(dev, p); | |
2456 | break; | |
2457 | case IOC_OPAL_ENABLE_DISABLE_MBR: | |
2458 | ret = opal_enable_disable_shadow_mbr(dev, p); | |
2459 | break; | |
c9888443 JR |
2460 | case IOC_OPAL_MBR_DONE: |
2461 | ret = opal_set_mbr_done(dev, p); | |
2462 | break; | |
a9b25b4c JR |
2463 | case IOC_OPAL_WRITE_SHADOW_MBR: |
2464 | ret = opal_write_shadow_mbr(dev, p); | |
2465 | break; | |
e225c20e SB |
2466 | case IOC_OPAL_ERASE_LR: |
2467 | ret = opal_erase_locking_range(dev, p); | |
2468 | break; | |
2469 | case IOC_OPAL_SECURE_ERASE_LR: | |
2470 | ret = opal_secure_erase_locking_range(dev, p); | |
2471 | break; | |
5e4c7cf6 RR |
2472 | case IOC_OPAL_PSID_REVERT_TPR: |
2473 | ret = opal_reverttper(dev, p, true); | |
2474 | break; | |
455a7b23 | 2475 | default: |
591c59d1 | 2476 | break; |
455a7b23 | 2477 | } |
e225c20e SB |
2478 | |
2479 | kfree(p); | |
2480 | return ret; | |
455a7b23 SB |
2481 | } |
2482 | EXPORT_SYMBOL_GPL(sed_ioctl); |