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Horia Geantă618b5dc2018-10-10 14:26:48 +03001// SPDX-License-Identifier: GPL-2.0+
Yuan Kang045e3672012-06-22 19:48:47 -05002/*
3 * caam - Freescale FSL CAAM support for ahash functions of crypto API
4 *
5 * Copyright 2011 Freescale Semiconductor, Inc.
Iuliana Prodan87870cf2019-01-21 15:22:42 +02006 * Copyright 2018-2019 NXP
Yuan Kang045e3672012-06-22 19:48:47 -05007 *
8 * Based on caamalg.c crypto API driver.
9 *
10 * relationship of digest job descriptor or first job descriptor after init to
11 * shared descriptors:
12 *
13 * --------------- ---------------
14 * | JobDesc #1 |-------------------->| ShareDesc |
15 * | *(packet 1) | | (hashKey) |
16 * --------------- | (operation) |
17 * ---------------
18 *
19 * relationship of subsequent job descriptors to shared descriptors:
20 *
21 * --------------- ---------------
22 * | JobDesc #2 |-------------------->| ShareDesc |
23 * | *(packet 2) | |------------->| (hashKey) |
24 * --------------- | |-------->| (operation) |
25 * . | | | (load ctx2) |
26 * . | | ---------------
27 * --------------- | |
28 * | JobDesc #3 |------| |
29 * | *(packet 3) | |
30 * --------------- |
31 * . |
32 * . |
33 * --------------- |
34 * | JobDesc #4 |------------
35 * | *(packet 4) |
36 * ---------------
37 *
38 * The SharedDesc never changes for a connection unless rekeyed, but
39 * each packet will likely be in a different place. So all we need
40 * to know to process the packet is where the input is, where the
41 * output goes, and what context we want to process with. Context is
42 * in the SharedDesc, packet references in the JobDesc.
43 *
44 * So, a job desc looks like:
45 *
46 * ---------------------
47 * | Header |
48 * | ShareDesc Pointer |
49 * | SEQ_OUT_PTR |
50 * | (output buffer) |
51 * | (output length) |
52 * | SEQ_IN_PTR |
53 * | (input buffer) |
54 * | (input length) |
55 * ---------------------
56 */
57
58#include "compat.h"
59
60#include "regs.h"
61#include "intern.h"
62#include "desc_constr.h"
63#include "jr.h"
64#include "error.h"
65#include "sg_sw_sec4.h"
66#include "key_gen.h"
Horia Geantă0efa7572018-09-12 11:59:35 +030067#include "caamhash_desc.h"
Yuan Kang045e3672012-06-22 19:48:47 -050068
69#define CAAM_CRA_PRIORITY 3000
70
71/* max hash key is max split key size */
72#define CAAM_MAX_HASH_KEY_SIZE (SHA512_DIGEST_SIZE * 2)
73
74#define CAAM_MAX_HASH_BLOCK_SIZE SHA512_BLOCK_SIZE
75#define CAAM_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
76
Yuan Kang045e3672012-06-22 19:48:47 -050077#define DESC_HASH_MAX_USED_BYTES (DESC_AHASH_FINAL_LEN + \
78 CAAM_MAX_HASH_KEY_SIZE)
79#define DESC_HASH_MAX_USED_LEN (DESC_HASH_MAX_USED_BYTES / CAAM_CMD_SZ)
80
81/* caam context sizes for hashes: running digest + 8 */
82#define HASH_MSG_LEN 8
83#define MAX_CTX_LEN (HASH_MSG_LEN + SHA512_DIGEST_SIZE)
84
Ruchika Guptacfc6f112013-10-25 12:01:03 +053085static struct list_head hash_list;
86
Yuan Kang045e3672012-06-22 19:48:47 -050087/* ahash per-session context */
88struct caam_hash_ctx {
Russell Kinge11793f2016-08-08 18:04:36 +010089 u32 sh_desc_update[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
90 u32 sh_desc_update_first[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
91 u32 sh_desc_fin[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
92 u32 sh_desc_digest[DESC_HASH_MAX_USED_LEN] ____cacheline_aligned;
Iuliana Prodan12b85672018-12-21 17:59:10 +020093 u8 key[CAAM_MAX_HASH_KEY_SIZE] ____cacheline_aligned;
Russell Kinge11793f2016-08-08 18:04:36 +010094 dma_addr_t sh_desc_update_dma ____cacheline_aligned;
Yuan Kang045e3672012-06-22 19:48:47 -050095 dma_addr_t sh_desc_update_first_dma;
96 dma_addr_t sh_desc_fin_dma;
97 dma_addr_t sh_desc_digest_dma;
Horia Geantă7e0880b2017-12-19 12:16:07 +020098 enum dma_data_direction dir;
Horia Geantăe9b49132019-07-31 16:08:11 +030099 enum dma_data_direction key_dir;
Russell Kinge11793f2016-08-08 18:04:36 +0100100 struct device *jrdev;
Yuan Kang045e3672012-06-22 19:48:47 -0500101 int ctx_len;
Horia Geantădb576562016-11-22 15:44:04 +0200102 struct alginfo adata;
Yuan Kang045e3672012-06-22 19:48:47 -0500103};
104
105/* ahash state */
106struct caam_hash_state {
107 dma_addr_t buf_dma;
108 dma_addr_t ctx_dma;
Franck LENORMAND65055e22019-02-19 16:56:55 +0200109 int ctx_dma_len;
Andrei Botila46b49ab2019-12-09 18:59:55 +0200110 u8 buf[CAAM_MAX_HASH_BLOCK_SIZE] ____cacheline_aligned;
111 int buflen;
112 int next_buflen;
Victoria Milhoane7472422015-08-05 11:28:35 -0700113 u8 caam_ctx[MAX_CTX_LEN] ____cacheline_aligned;
Yuan Kang045e3672012-06-22 19:48:47 -0500114 int (*update)(struct ahash_request *req);
115 int (*final)(struct ahash_request *req);
116 int (*finup)(struct ahash_request *req);
Yuan Kang045e3672012-06-22 19:48:47 -0500117};
118
Russell King5ec90832015-10-18 17:51:25 +0100119struct caam_export_state {
120 u8 buf[CAAM_MAX_HASH_BLOCK_SIZE];
121 u8 caam_ctx[MAX_CTX_LEN];
122 int buflen;
123 int (*update)(struct ahash_request *req);
124 int (*final)(struct ahash_request *req);
125 int (*finup)(struct ahash_request *req);
126};
127
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200128static inline bool is_cmac_aes(u32 algtype)
Iuliana Prodan12b85672018-12-21 17:59:10 +0200129{
130 return (algtype & (OP_ALG_ALGSEL_MASK | OP_ALG_AAI_MASK)) ==
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200131 (OP_ALG_ALGSEL_AES | OP_ALG_AAI_CMAC);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200132}
Yuan Kang045e3672012-06-22 19:48:47 -0500133/* Common job descriptor seq in/out ptr routines */
134
135/* Map state->caam_ctx, and append seq_out_ptr command that points to it */
Horia Geantace572082014-07-11 15:34:49 +0300136static inline int map_seq_out_ptr_ctx(u32 *desc, struct device *jrdev,
137 struct caam_hash_state *state,
138 int ctx_len)
Yuan Kang045e3672012-06-22 19:48:47 -0500139{
Franck LENORMAND65055e22019-02-19 16:56:55 +0200140 state->ctx_dma_len = ctx_len;
Yuan Kang045e3672012-06-22 19:48:47 -0500141 state->ctx_dma = dma_map_single(jrdev, state->caam_ctx,
142 ctx_len, DMA_FROM_DEVICE);
Horia Geantace572082014-07-11 15:34:49 +0300143 if (dma_mapping_error(jrdev, state->ctx_dma)) {
144 dev_err(jrdev, "unable to map ctx\n");
Horia Geantă87ec02e2017-02-10 14:07:23 +0200145 state->ctx_dma = 0;
Horia Geantace572082014-07-11 15:34:49 +0300146 return -ENOMEM;
147 }
148
Yuan Kang045e3672012-06-22 19:48:47 -0500149 append_seq_out_ptr(desc, state->ctx_dma, ctx_len, 0);
Horia Geantace572082014-07-11 15:34:49 +0300150
151 return 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500152}
153
Horia Geantă944c3d42017-02-10 14:07:25 +0200154/* Map current buffer in state (if length > 0) and put it in link table */
155static inline int buf_map_to_sec4_sg(struct device *jrdev,
156 struct sec4_sg_entry *sec4_sg,
157 struct caam_hash_state *state)
Yuan Kang045e3672012-06-22 19:48:47 -0500158{
Andrei Botila46b49ab2019-12-09 18:59:55 +0200159 int buflen = state->buflen;
Yuan Kang045e3672012-06-22 19:48:47 -0500160
Horia Geantă944c3d42017-02-10 14:07:25 +0200161 if (!buflen)
162 return 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500163
Andrei Botila46b49ab2019-12-09 18:59:55 +0200164 state->buf_dma = dma_map_single(jrdev, state->buf, buflen,
Horia Geantă944c3d42017-02-10 14:07:25 +0200165 DMA_TO_DEVICE);
166 if (dma_mapping_error(jrdev, state->buf_dma)) {
167 dev_err(jrdev, "unable to map buf\n");
168 state->buf_dma = 0;
169 return -ENOMEM;
170 }
Yuan Kang045e3672012-06-22 19:48:47 -0500171
Horia Geantă944c3d42017-02-10 14:07:25 +0200172 dma_to_sec4_sg_one(sec4_sg, state->buf_dma, buflen, 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500173
Horia Geantă944c3d42017-02-10 14:07:25 +0200174 return 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500175}
176
177/* Map state->caam_ctx, and add it to link table */
Horia Geantădfcd8392017-11-01 09:13:11 +0200178static inline int ctx_map_to_sec4_sg(struct device *jrdev,
Horia Geantace572082014-07-11 15:34:49 +0300179 struct caam_hash_state *state, int ctx_len,
180 struct sec4_sg_entry *sec4_sg, u32 flag)
Yuan Kang045e3672012-06-22 19:48:47 -0500181{
Franck LENORMAND65055e22019-02-19 16:56:55 +0200182 state->ctx_dma_len = ctx_len;
Yuan Kang045e3672012-06-22 19:48:47 -0500183 state->ctx_dma = dma_map_single(jrdev, state->caam_ctx, ctx_len, flag);
Horia Geantace572082014-07-11 15:34:49 +0300184 if (dma_mapping_error(jrdev, state->ctx_dma)) {
185 dev_err(jrdev, "unable to map ctx\n");
Horia Geantă87ec02e2017-02-10 14:07:23 +0200186 state->ctx_dma = 0;
Horia Geantace572082014-07-11 15:34:49 +0300187 return -ENOMEM;
188 }
189
Yuan Kang045e3672012-06-22 19:48:47 -0500190 dma_to_sec4_sg_one(sec4_sg, state->ctx_dma, ctx_len, 0);
Horia Geantace572082014-07-11 15:34:49 +0300191
192 return 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500193}
194
Yuan Kang045e3672012-06-22 19:48:47 -0500195static int ahash_set_sh_desc(struct crypto_ahash *ahash)
196{
197 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
198 int digestsize = crypto_ahash_digestsize(ahash);
199 struct device *jrdev = ctx->jrdev;
Horia Geantă7e0880b2017-12-19 12:16:07 +0200200 struct caam_drv_private *ctrlpriv = dev_get_drvdata(jrdev->parent);
Yuan Kang045e3672012-06-22 19:48:47 -0500201 u32 *desc;
202
Horia Geantă7e0880b2017-12-19 12:16:07 +0200203 ctx->adata.key_virt = ctx->key;
204
Yuan Kang045e3672012-06-22 19:48:47 -0500205 /* ahash_update shared descriptor */
206 desc = ctx->sh_desc_update;
Horia Geantă0efa7572018-09-12 11:59:35 +0300207 cnstr_shdsc_ahash(desc, &ctx->adata, OP_ALG_AS_UPDATE, ctx->ctx_len,
208 ctx->ctx_len, true, ctrlpriv->era);
Horia Geantăbbf22342017-02-10 14:07:22 +0200209 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_dma,
Horia Geantă7e0880b2017-12-19 12:16:07 +0200210 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200211
212 print_hex_dump_debug("ahash update shdesc@"__stringify(__LINE__)": ",
213 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
214 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500215
216 /* ahash_update_first shared descriptor */
217 desc = ctx->sh_desc_update_first;
Horia Geantă0efa7572018-09-12 11:59:35 +0300218 cnstr_shdsc_ahash(desc, &ctx->adata, OP_ALG_AS_INIT, ctx->ctx_len,
219 ctx->ctx_len, false, ctrlpriv->era);
Horia Geantăbbf22342017-02-10 14:07:22 +0200220 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_first_dma,
Horia Geantă7e0880b2017-12-19 12:16:07 +0200221 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200222 print_hex_dump_debug("ahash update first shdesc@"__stringify(__LINE__)
223 ": ", DUMP_PREFIX_ADDRESS, 16, 4, desc,
224 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500225
226 /* ahash_final shared descriptor */
227 desc = ctx->sh_desc_fin;
Horia Geantă0efa7572018-09-12 11:59:35 +0300228 cnstr_shdsc_ahash(desc, &ctx->adata, OP_ALG_AS_FINALIZE, digestsize,
229 ctx->ctx_len, true, ctrlpriv->era);
Horia Geantăbbf22342017-02-10 14:07:22 +0200230 dma_sync_single_for_device(jrdev, ctx->sh_desc_fin_dma,
Horia Geantă7e0880b2017-12-19 12:16:07 +0200231 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200232
233 print_hex_dump_debug("ahash final shdesc@"__stringify(__LINE__)": ",
234 DUMP_PREFIX_ADDRESS, 16, 4, desc,
235 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500236
Yuan Kang045e3672012-06-22 19:48:47 -0500237 /* ahash_digest shared descriptor */
238 desc = ctx->sh_desc_digest;
Horia Geantă0efa7572018-09-12 11:59:35 +0300239 cnstr_shdsc_ahash(desc, &ctx->adata, OP_ALG_AS_INITFINAL, digestsize,
240 ctx->ctx_len, false, ctrlpriv->era);
Horia Geantăbbf22342017-02-10 14:07:22 +0200241 dma_sync_single_for_device(jrdev, ctx->sh_desc_digest_dma,
Horia Geantă7e0880b2017-12-19 12:16:07 +0200242 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200243
244 print_hex_dump_debug("ahash digest shdesc@"__stringify(__LINE__)": ",
245 DUMP_PREFIX_ADDRESS, 16, 4, desc,
246 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500247
248 return 0;
249}
250
Iuliana Prodan12b85672018-12-21 17:59:10 +0200251static int axcbc_set_sh_desc(struct crypto_ahash *ahash)
252{
253 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
254 int digestsize = crypto_ahash_digestsize(ahash);
255 struct device *jrdev = ctx->jrdev;
256 u32 *desc;
257
Iuliana Prodan12b85672018-12-21 17:59:10 +0200258 /* shared descriptor for ahash_update */
259 desc = ctx->sh_desc_update;
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200260 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_UPDATE,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300261 ctx->ctx_len, ctx->ctx_len);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200262 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_dma,
263 desc_bytes(desc), ctx->dir);
264 print_hex_dump_debug("axcbc update shdesc@" __stringify(__LINE__)" : ",
265 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
266 1);
267
268 /* shared descriptor for ahash_{final,finup} */
269 desc = ctx->sh_desc_fin;
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200270 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_FINALIZE,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300271 digestsize, ctx->ctx_len);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200272 dma_sync_single_for_device(jrdev, ctx->sh_desc_fin_dma,
273 desc_bytes(desc), ctx->dir);
274 print_hex_dump_debug("axcbc finup shdesc@" __stringify(__LINE__)" : ",
275 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
276 1);
277
278 /* key is immediate data for INIT and INITFINAL states */
279 ctx->adata.key_virt = ctx->key;
280
281 /* shared descriptor for first invocation of ahash_update */
282 desc = ctx->sh_desc_update_first;
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200283 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_INIT, ctx->ctx_len,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300284 ctx->ctx_len);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200285 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_first_dma,
286 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200287 print_hex_dump_debug("axcbc update first shdesc@" __stringify(__LINE__)
288 " : ", DUMP_PREFIX_ADDRESS, 16, 4, desc,
289 desc_bytes(desc), 1);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200290
291 /* shared descriptor for ahash_digest */
292 desc = ctx->sh_desc_digest;
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200293 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_INITFINAL,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300294 digestsize, ctx->ctx_len);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200295 dma_sync_single_for_device(jrdev, ctx->sh_desc_digest_dma,
296 desc_bytes(desc), ctx->dir);
297 print_hex_dump_debug("axcbc digest shdesc@" __stringify(__LINE__)" : ",
298 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
299 1);
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200300 return 0;
301}
302
303static int acmac_set_sh_desc(struct crypto_ahash *ahash)
304{
305 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
306 int digestsize = crypto_ahash_digestsize(ahash);
307 struct device *jrdev = ctx->jrdev;
308 u32 *desc;
309
310 /* shared descriptor for ahash_update */
311 desc = ctx->sh_desc_update;
312 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_UPDATE,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300313 ctx->ctx_len, ctx->ctx_len);
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200314 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_dma,
315 desc_bytes(desc), ctx->dir);
316 print_hex_dump_debug("acmac update shdesc@" __stringify(__LINE__)" : ",
317 DUMP_PREFIX_ADDRESS, 16, 4, desc,
318 desc_bytes(desc), 1);
319
320 /* shared descriptor for ahash_{final,finup} */
321 desc = ctx->sh_desc_fin;
322 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_FINALIZE,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300323 digestsize, ctx->ctx_len);
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200324 dma_sync_single_for_device(jrdev, ctx->sh_desc_fin_dma,
325 desc_bytes(desc), ctx->dir);
326 print_hex_dump_debug("acmac finup shdesc@" __stringify(__LINE__)" : ",
327 DUMP_PREFIX_ADDRESS, 16, 4, desc,
328 desc_bytes(desc), 1);
329
330 /* shared descriptor for first invocation of ahash_update */
331 desc = ctx->sh_desc_update_first;
332 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_INIT, ctx->ctx_len,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300333 ctx->ctx_len);
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200334 dma_sync_single_for_device(jrdev, ctx->sh_desc_update_first_dma,
335 desc_bytes(desc), ctx->dir);
Sascha Hauer6e005502019-05-23 10:50:29 +0200336 print_hex_dump_debug("acmac update first shdesc@" __stringify(__LINE__)
337 " : ", DUMP_PREFIX_ADDRESS, 16, 4, desc,
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200338 desc_bytes(desc), 1);
339
340 /* shared descriptor for ahash_digest */
341 desc = ctx->sh_desc_digest;
342 cnstr_shdsc_sk_hash(desc, &ctx->adata, OP_ALG_AS_INITFINAL,
Horia Geantăa2fb8642019-07-31 16:08:10 +0300343 digestsize, ctx->ctx_len);
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200344 dma_sync_single_for_device(jrdev, ctx->sh_desc_digest_dma,
345 desc_bytes(desc), ctx->dir);
346 print_hex_dump_debug("acmac digest shdesc@" __stringify(__LINE__)" : ",
347 DUMP_PREFIX_ADDRESS, 16, 4, desc,
348 desc_bytes(desc), 1);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200349
350 return 0;
351}
352
Yuan Kang045e3672012-06-22 19:48:47 -0500353/* Digest hash size if it is too large */
Horia Geantă30724442019-02-19 16:56:57 +0200354static int hash_digest_key(struct caam_hash_ctx *ctx, u32 *keylen, u8 *key,
355 u32 digestsize)
Yuan Kang045e3672012-06-22 19:48:47 -0500356{
357 struct device *jrdev = ctx->jrdev;
358 u32 *desc;
359 struct split_key_result result;
Horia Geantă30724442019-02-19 16:56:57 +0200360 dma_addr_t key_dma;
Markus Elfring9e6df0f2016-09-15 15:24:02 +0200361 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -0500362
Vakul Garg9c23b7d2013-07-10 06:26:13 +0000363 desc = kmalloc(CAAM_CMD_SZ * 8 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA);
Kim Phillips2af8f4a2012-09-07 04:17:03 +0800364 if (!desc) {
365 dev_err(jrdev, "unable to allocate key input memory\n");
366 return -ENOMEM;
367 }
Yuan Kang045e3672012-06-22 19:48:47 -0500368
369 init_job_desc(desc, 0);
370
Horia Geantă30724442019-02-19 16:56:57 +0200371 key_dma = dma_map_single(jrdev, key, *keylen, DMA_BIDIRECTIONAL);
372 if (dma_mapping_error(jrdev, key_dma)) {
373 dev_err(jrdev, "unable to map key memory\n");
Yuan Kang045e3672012-06-22 19:48:47 -0500374 kfree(desc);
375 return -ENOMEM;
376 }
377
378 /* Job descriptor to perform unkeyed hash on key_in */
Horia Geantădb576562016-11-22 15:44:04 +0200379 append_operation(desc, ctx->adata.algtype | OP_ALG_ENCRYPT |
Yuan Kang045e3672012-06-22 19:48:47 -0500380 OP_ALG_AS_INITFINAL);
Horia Geantă30724442019-02-19 16:56:57 +0200381 append_seq_in_ptr(desc, key_dma, *keylen, 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500382 append_seq_fifo_load(desc, *keylen, FIFOLD_CLASS_CLASS2 |
383 FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_MSG);
Horia Geantă30724442019-02-19 16:56:57 +0200384 append_seq_out_ptr(desc, key_dma, digestsize, 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500385 append_seq_store(desc, digestsize, LDST_CLASS_2_CCB |
386 LDST_SRCDST_BYTE_CONTEXT);
387
Sascha Hauer6e005502019-05-23 10:50:29 +0200388 print_hex_dump_debug("key_in@"__stringify(__LINE__)": ",
389 DUMP_PREFIX_ADDRESS, 16, 4, key, *keylen, 1);
390 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
391 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
392 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500393
394 result.err = 0;
395 init_completion(&result.completion);
396
397 ret = caam_jr_enqueue(jrdev, desc, split_key_done, &result);
398 if (!ret) {
399 /* in progress */
Horia Geantă7459e1d2017-07-07 16:57:06 +0300400 wait_for_completion(&result.completion);
Yuan Kang045e3672012-06-22 19:48:47 -0500401 ret = result.err;
Sascha Hauer6e005502019-05-23 10:50:29 +0200402
403 print_hex_dump_debug("digested key@"__stringify(__LINE__)": ",
404 DUMP_PREFIX_ADDRESS, 16, 4, key,
405 digestsize, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500406 }
Horia Geantă30724442019-02-19 16:56:57 +0200407 dma_unmap_single(jrdev, key_dma, *keylen, DMA_BIDIRECTIONAL);
Yuan Kang045e3672012-06-22 19:48:47 -0500408
Horia Geantae11aa9f2014-07-11 15:34:50 +0300409 *keylen = digestsize;
410
Yuan Kang045e3672012-06-22 19:48:47 -0500411 kfree(desc);
412
413 return ret;
414}
415
416static int ahash_setkey(struct crypto_ahash *ahash,
417 const u8 *key, unsigned int keylen)
418{
Yuan Kang045e3672012-06-22 19:48:47 -0500419 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Sascha Hauer6e005502019-05-23 10:50:29 +0200420 struct device *jrdev = ctx->jrdev;
Yuan Kang045e3672012-06-22 19:48:47 -0500421 int blocksize = crypto_tfm_alg_blocksize(&ahash->base);
422 int digestsize = crypto_ahash_digestsize(ahash);
Horia Geantă7e0880b2017-12-19 12:16:07 +0200423 struct caam_drv_private *ctrlpriv = dev_get_drvdata(ctx->jrdev->parent);
Markus Elfring9e6df0f2016-09-15 15:24:02 +0200424 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -0500425 u8 *hashed_key = NULL;
426
Sascha Hauer6e005502019-05-23 10:50:29 +0200427 dev_dbg(jrdev, "keylen %d\n", keylen);
Yuan Kang045e3672012-06-22 19:48:47 -0500428
429 if (keylen > blocksize) {
Horia Geantă30724442019-02-19 16:56:57 +0200430 hashed_key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
Yuan Kang045e3672012-06-22 19:48:47 -0500431 if (!hashed_key)
432 return -ENOMEM;
Horia Geantă30724442019-02-19 16:56:57 +0200433 ret = hash_digest_key(ctx, &keylen, hashed_key, digestsize);
Yuan Kang045e3672012-06-22 19:48:47 -0500434 if (ret)
Markus Elfringd6e7a7d2016-09-15 13:54:49 +0200435 goto bad_free_key;
Yuan Kang045e3672012-06-22 19:48:47 -0500436 key = hashed_key;
437 }
438
Horia Geantă7e0880b2017-12-19 12:16:07 +0200439 /*
440 * If DKP is supported, use it in the shared descriptor to generate
441 * the split key.
442 */
443 if (ctrlpriv->era >= 6) {
444 ctx->adata.key_inline = true;
445 ctx->adata.keylen = keylen;
446 ctx->adata.keylen_pad = split_key_len(ctx->adata.algtype &
447 OP_ALG_ALGSEL_MASK);
Yuan Kang045e3672012-06-22 19:48:47 -0500448
Horia Geantă7e0880b2017-12-19 12:16:07 +0200449 if (ctx->adata.keylen_pad > CAAM_MAX_HASH_KEY_SIZE)
450 goto bad_free_key;
451
452 memcpy(ctx->key, key, keylen);
Horia Geantăe9b49132019-07-31 16:08:11 +0300453
454 /*
455 * In case |user key| > |derived key|, using DKP<imm,imm>
456 * would result in invalid opcodes (last bytes of user key) in
457 * the resulting descriptor. Use DKP<ptr,imm> instead => both
458 * virtual and dma key addresses are needed.
459 */
460 if (keylen > ctx->adata.keylen_pad)
461 dma_sync_single_for_device(ctx->jrdev,
462 ctx->adata.key_dma,
463 ctx->adata.keylen_pad,
464 DMA_TO_DEVICE);
Horia Geantă7e0880b2017-12-19 12:16:07 +0200465 } else {
466 ret = gen_split_key(ctx->jrdev, ctx->key, &ctx->adata, key,
467 keylen, CAAM_MAX_HASH_KEY_SIZE);
468 if (ret)
469 goto bad_free_key;
470 }
Yuan Kang045e3672012-06-22 19:48:47 -0500471
Yuan Kang045e3672012-06-22 19:48:47 -0500472 kfree(hashed_key);
Horia Geantăcfb725f2017-02-10 14:07:21 +0200473 return ahash_set_sh_desc(ahash);
Markus Elfringd6e7a7d2016-09-15 13:54:49 +0200474 bad_free_key:
Yuan Kang045e3672012-06-22 19:48:47 -0500475 kfree(hashed_key);
Yuan Kang045e3672012-06-22 19:48:47 -0500476 return -EINVAL;
477}
478
Iuliana Prodan12b85672018-12-21 17:59:10 +0200479static int axcbc_setkey(struct crypto_ahash *ahash, const u8 *key,
480 unsigned int keylen)
481{
482 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
483 struct device *jrdev = ctx->jrdev;
484
Eric Biggers674f3682019-12-30 21:19:36 -0600485 if (keylen != AES_KEYSIZE_128)
Iuliana Prodan836d8f42019-07-31 16:08:05 +0300486 return -EINVAL;
Iuliana Prodan836d8f42019-07-31 16:08:05 +0300487
Iuliana Prodan12b85672018-12-21 17:59:10 +0200488 memcpy(ctx->key, key, keylen);
Horia Geantăa2fb8642019-07-31 16:08:10 +0300489 dma_sync_single_for_device(jrdev, ctx->adata.key_dma, keylen,
490 DMA_TO_DEVICE);
Iuliana Prodan12b85672018-12-21 17:59:10 +0200491 ctx->adata.keylen = keylen;
492
493 print_hex_dump_debug("axcbc ctx.key@" __stringify(__LINE__)" : ",
494 DUMP_PREFIX_ADDRESS, 16, 4, ctx->key, keylen, 1);
495
496 return axcbc_set_sh_desc(ahash);
497}
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200498
499static int acmac_setkey(struct crypto_ahash *ahash, const u8 *key,
500 unsigned int keylen)
501{
502 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Iuliana Prodan836d8f42019-07-31 16:08:05 +0300503 int err;
504
505 err = aes_check_keylen(keylen);
Eric Biggers674f3682019-12-30 21:19:36 -0600506 if (err)
Iuliana Prodan836d8f42019-07-31 16:08:05 +0300507 return err;
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200508
509 /* key is immediate data for all cmac shared descriptors */
510 ctx->adata.key_virt = key;
511 ctx->adata.keylen = keylen;
512
513 print_hex_dump_debug("acmac ctx.key@" __stringify(__LINE__)" : ",
514 DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1);
515
516 return acmac_set_sh_desc(ahash);
517}
518
Yuan Kang045e3672012-06-22 19:48:47 -0500519/*
520 * ahash_edesc - s/w-extended ahash descriptor
Yuan Kang045e3672012-06-22 19:48:47 -0500521 * @sec4_sg_dma: physical mapped address of h/w link table
522 * @src_nents: number of segments in input scatterlist
523 * @sec4_sg_bytes: length of dma mapped sec4_sg space
Yuan Kang045e3672012-06-22 19:48:47 -0500524 * @hw_desc: the h/w job descriptor followed by any referenced link tables
Russell King343e44b2016-08-08 18:04:52 +0100525 * @sec4_sg: h/w link table
Yuan Kang045e3672012-06-22 19:48:47 -0500526 */
527struct ahash_edesc {
Yuan Kang045e3672012-06-22 19:48:47 -0500528 dma_addr_t sec4_sg_dma;
529 int src_nents;
530 int sec4_sg_bytes;
Andrey Smirnov1a3daad2019-08-20 13:23:55 -0700531 u32 hw_desc[DESC_JOB_IO_LEN_MAX / sizeof(u32)] ____cacheline_aligned;
Russell King343e44b2016-08-08 18:04:52 +0100532 struct sec4_sg_entry sec4_sg[0];
Yuan Kang045e3672012-06-22 19:48:47 -0500533};
534
535static inline void ahash_unmap(struct device *dev,
536 struct ahash_edesc *edesc,
537 struct ahash_request *req, int dst_len)
538{
Horia Geantă944c3d42017-02-10 14:07:25 +0200539 struct caam_hash_state *state = ahash_request_ctx(req);
540
Yuan Kang045e3672012-06-22 19:48:47 -0500541 if (edesc->src_nents)
LABBE Corentin13fb8fd2015-09-23 13:55:27 +0200542 dma_unmap_sg(dev, req->src, edesc->src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -0500543
544 if (edesc->sec4_sg_bytes)
545 dma_unmap_single(dev, edesc->sec4_sg_dma,
546 edesc->sec4_sg_bytes, DMA_TO_DEVICE);
Horia Geantă944c3d42017-02-10 14:07:25 +0200547
548 if (state->buf_dma) {
Andrei Botila46b49ab2019-12-09 18:59:55 +0200549 dma_unmap_single(dev, state->buf_dma, state->buflen,
Horia Geantă944c3d42017-02-10 14:07:25 +0200550 DMA_TO_DEVICE);
551 state->buf_dma = 0;
552 }
Yuan Kang045e3672012-06-22 19:48:47 -0500553}
554
555static inline void ahash_unmap_ctx(struct device *dev,
556 struct ahash_edesc *edesc,
557 struct ahash_request *req, int dst_len, u32 flag)
558{
Yuan Kang045e3672012-06-22 19:48:47 -0500559 struct caam_hash_state *state = ahash_request_ctx(req);
560
Horia Geantă87ec02e2017-02-10 14:07:23 +0200561 if (state->ctx_dma) {
Franck LENORMAND65055e22019-02-19 16:56:55 +0200562 dma_unmap_single(dev, state->ctx_dma, state->ctx_dma_len, flag);
Horia Geantă87ec02e2017-02-10 14:07:23 +0200563 state->ctx_dma = 0;
564 }
Yuan Kang045e3672012-06-22 19:48:47 -0500565 ahash_unmap(dev, edesc, req, dst_len);
566}
567
568static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
569 void *context)
570{
571 struct ahash_request *req = context;
572 struct ahash_edesc *edesc;
573 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
574 int digestsize = crypto_ahash_digestsize(ahash);
Horia Geantăc19650d2019-01-26 20:02:15 +0200575 struct caam_hash_state *state = ahash_request_ctx(req);
Yuan Kang045e3672012-06-22 19:48:47 -0500576 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Horia Geantă1984aae2019-07-31 16:08:03 +0300577 int ecode = 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500578
Sascha Hauer6e005502019-05-23 10:50:29 +0200579 dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500580
Horia Geantă4ca7c7d2016-11-09 10:46:18 +0200581 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
Marek Vasutfa9659c2014-04-24 20:05:12 +0200582 if (err)
Horia Geantă1984aae2019-07-31 16:08:03 +0300583 ecode = caam_jr_strstatus(jrdev, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500584
Horia Geantăc19650d2019-01-26 20:02:15 +0200585 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
586 memcpy(req->result, state->caam_ctx, digestsize);
Yuan Kang045e3672012-06-22 19:48:47 -0500587 kfree(edesc);
588
Sascha Hauer6e005502019-05-23 10:50:29 +0200589 print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
590 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
591 ctx->ctx_len, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500592
Horia Geantă1984aae2019-07-31 16:08:03 +0300593 req->base.complete(&req->base, ecode);
Yuan Kang045e3672012-06-22 19:48:47 -0500594}
595
596static void ahash_done_bi(struct device *jrdev, u32 *desc, u32 err,
597 void *context)
598{
599 struct ahash_request *req = context;
600 struct ahash_edesc *edesc;
601 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
602 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Yuan Kang045e3672012-06-22 19:48:47 -0500603 struct caam_hash_state *state = ahash_request_ctx(req);
604 int digestsize = crypto_ahash_digestsize(ahash);
Horia Geantă1984aae2019-07-31 16:08:03 +0300605 int ecode = 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500606
Sascha Hauer6e005502019-05-23 10:50:29 +0200607 dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500608
Horia Geantă4ca7c7d2016-11-09 10:46:18 +0200609 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
Marek Vasutfa9659c2014-04-24 20:05:12 +0200610 if (err)
Horia Geantă1984aae2019-07-31 16:08:03 +0300611 ecode = caam_jr_strstatus(jrdev, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500612
613 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
614 kfree(edesc);
615
Andrei Botila46b49ab2019-12-09 18:59:55 +0200616 scatterwalk_map_and_copy(state->buf, req->src,
617 req->nbytes - state->next_buflen,
618 state->next_buflen, 0);
619 state->buflen = state->next_buflen;
620
621 print_hex_dump_debug("buf@" __stringify(__LINE__)": ",
622 DUMP_PREFIX_ADDRESS, 16, 4, state->buf,
623 state->buflen, 1);
624
Sascha Hauer6e005502019-05-23 10:50:29 +0200625 print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
626 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
627 ctx->ctx_len, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500628 if (req->result)
Sascha Hauer6e005502019-05-23 10:50:29 +0200629 print_hex_dump_debug("result@"__stringify(__LINE__)": ",
630 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
631 digestsize, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500632
Horia Geantă1984aae2019-07-31 16:08:03 +0300633 req->base.complete(&req->base, ecode);
Yuan Kang045e3672012-06-22 19:48:47 -0500634}
635
636static void ahash_done_ctx_src(struct device *jrdev, u32 *desc, u32 err,
637 void *context)
638{
639 struct ahash_request *req = context;
640 struct ahash_edesc *edesc;
641 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
642 int digestsize = crypto_ahash_digestsize(ahash);
Horia Geantăc19650d2019-01-26 20:02:15 +0200643 struct caam_hash_state *state = ahash_request_ctx(req);
Yuan Kang045e3672012-06-22 19:48:47 -0500644 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Horia Geantă1984aae2019-07-31 16:08:03 +0300645 int ecode = 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500646
Sascha Hauer6e005502019-05-23 10:50:29 +0200647 dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500648
Horia Geantă4ca7c7d2016-11-09 10:46:18 +0200649 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
Marek Vasutfa9659c2014-04-24 20:05:12 +0200650 if (err)
Horia Geantă1984aae2019-07-31 16:08:03 +0300651 ecode = caam_jr_strstatus(jrdev, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500652
Horia Geantăc19650d2019-01-26 20:02:15 +0200653 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
654 memcpy(req->result, state->caam_ctx, digestsize);
Yuan Kang045e3672012-06-22 19:48:47 -0500655 kfree(edesc);
656
Sascha Hauer6e005502019-05-23 10:50:29 +0200657 print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
658 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
659 ctx->ctx_len, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500660
Horia Geantă1984aae2019-07-31 16:08:03 +0300661 req->base.complete(&req->base, ecode);
Yuan Kang045e3672012-06-22 19:48:47 -0500662}
663
664static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
665 void *context)
666{
667 struct ahash_request *req = context;
668 struct ahash_edesc *edesc;
669 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
670 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Yuan Kang045e3672012-06-22 19:48:47 -0500671 struct caam_hash_state *state = ahash_request_ctx(req);
672 int digestsize = crypto_ahash_digestsize(ahash);
Horia Geantă1984aae2019-07-31 16:08:03 +0300673 int ecode = 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500674
Sascha Hauer6e005502019-05-23 10:50:29 +0200675 dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500676
Horia Geantă4ca7c7d2016-11-09 10:46:18 +0200677 edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
Marek Vasutfa9659c2014-04-24 20:05:12 +0200678 if (err)
Horia Geantă1984aae2019-07-31 16:08:03 +0300679 ecode = caam_jr_strstatus(jrdev, err);
Yuan Kang045e3672012-06-22 19:48:47 -0500680
Horia Geantaef62b232014-07-11 15:34:51 +0300681 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_FROM_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -0500682 kfree(edesc);
683
Andrei Botila46b49ab2019-12-09 18:59:55 +0200684 scatterwalk_map_and_copy(state->buf, req->src,
685 req->nbytes - state->next_buflen,
686 state->next_buflen, 0);
687 state->buflen = state->next_buflen;
688
689 print_hex_dump_debug("buf@" __stringify(__LINE__)": ",
690 DUMP_PREFIX_ADDRESS, 16, 4, state->buf,
691 state->buflen, 1);
692
Sascha Hauer6e005502019-05-23 10:50:29 +0200693 print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
694 DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
695 ctx->ctx_len, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500696 if (req->result)
Sascha Hauer6e005502019-05-23 10:50:29 +0200697 print_hex_dump_debug("result@"__stringify(__LINE__)": ",
698 DUMP_PREFIX_ADDRESS, 16, 4, req->result,
699 digestsize, 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500700
Horia Geantă1984aae2019-07-31 16:08:03 +0300701 req->base.complete(&req->base, ecode);
Yuan Kang045e3672012-06-22 19:48:47 -0500702}
703
Russell King5588d032016-08-08 18:05:08 +0100704/*
705 * Allocate an enhanced descriptor, which contains the hardware descriptor
706 * and space for hardware scatter table containing sg_num entries.
707 */
708static struct ahash_edesc *ahash_edesc_alloc(struct caam_hash_ctx *ctx,
Russell King30a43b42016-08-08 18:05:13 +0100709 int sg_num, u32 *sh_desc,
710 dma_addr_t sh_desc_dma,
711 gfp_t flags)
Russell King5588d032016-08-08 18:05:08 +0100712{
713 struct ahash_edesc *edesc;
714 unsigned int sg_size = sg_num * sizeof(struct sec4_sg_entry);
715
716 edesc = kzalloc(sizeof(*edesc) + sg_size, GFP_DMA | flags);
717 if (!edesc) {
718 dev_err(ctx->jrdev, "could not allocate extended descriptor\n");
719 return NULL;
720 }
721
Russell King30a43b42016-08-08 18:05:13 +0100722 init_job_desc_shared(edesc->hw_desc, sh_desc_dma, desc_len(sh_desc),
723 HDR_SHARE_DEFER | HDR_REVERSE);
724
Russell King5588d032016-08-08 18:05:08 +0100725 return edesc;
726}
727
Russell King65cf1642016-08-08 18:05:19 +0100728static int ahash_edesc_add_src(struct caam_hash_ctx *ctx,
729 struct ahash_edesc *edesc,
730 struct ahash_request *req, int nents,
731 unsigned int first_sg,
732 unsigned int first_bytes, size_t to_hash)
733{
734 dma_addr_t src_dma;
735 u32 options;
736
737 if (nents > 1 || first_sg) {
738 struct sec4_sg_entry *sg = edesc->sec4_sg;
Horia Geantăa5e5c132019-05-03 17:17:38 +0300739 unsigned int sgsize = sizeof(*sg) *
740 pad_sg_nents(first_sg + nents);
Russell King65cf1642016-08-08 18:05:19 +0100741
Horia Geantă059d73e2019-06-10 16:30:58 +0300742 sg_to_sec4_sg_last(req->src, to_hash, sg + first_sg, 0);
Russell King65cf1642016-08-08 18:05:19 +0100743
744 src_dma = dma_map_single(ctx->jrdev, sg, sgsize, DMA_TO_DEVICE);
745 if (dma_mapping_error(ctx->jrdev, src_dma)) {
746 dev_err(ctx->jrdev, "unable to map S/G table\n");
747 return -ENOMEM;
748 }
749
750 edesc->sec4_sg_bytes = sgsize;
751 edesc->sec4_sg_dma = src_dma;
752 options = LDST_SGF;
753 } else {
754 src_dma = sg_dma_address(req->src);
755 options = 0;
756 }
757
758 append_seq_in_ptr(edesc->hw_desc, src_dma, first_bytes + to_hash,
759 options);
760
761 return 0;
762}
763
Yuan Kang045e3672012-06-22 19:48:47 -0500764/* submit update job descriptor */
765static int ahash_update_ctx(struct ahash_request *req)
766{
767 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
768 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
769 struct caam_hash_state *state = ahash_request_ctx(req);
770 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +0300771 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
772 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +0200773 u8 *buf = state->buf;
774 int *buflen = &state->buflen;
775 int *next_buflen = &state->next_buflen;
Iuliana Prodan12b85672018-12-21 17:59:10 +0200776 int blocksize = crypto_ahash_blocksize(ahash);
Yuan Kang045e3672012-06-22 19:48:47 -0500777 int in_len = *buflen + req->nbytes, to_hash;
Russell King30a43b42016-08-08 18:05:13 +0100778 u32 *desc;
Russell Kingbc13c692016-08-08 18:05:03 +0100779 int src_nents, mapped_nents, sec4_sg_bytes, sec4_sg_src_index;
Yuan Kang045e3672012-06-22 19:48:47 -0500780 struct ahash_edesc *edesc;
781 int ret = 0;
Yuan Kang045e3672012-06-22 19:48:47 -0500782
Iuliana Prodan12b85672018-12-21 17:59:10 +0200783 *next_buflen = in_len & (blocksize - 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500784 to_hash = in_len - *next_buflen;
785
Iuliana Prodan12b85672018-12-21 17:59:10 +0200786 /*
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200787 * For XCBC and CMAC, if to_hash is multiple of block size,
Iuliana Prodan12b85672018-12-21 17:59:10 +0200788 * keep last block in internal buffer
789 */
Iuliana Prodan87870cf2019-01-21 15:22:42 +0200790 if ((is_xcbc_aes(ctx->adata.algtype) ||
791 is_cmac_aes(ctx->adata.algtype)) && to_hash >= blocksize &&
792 (*next_buflen == 0)) {
Iuliana Prodan12b85672018-12-21 17:59:10 +0200793 *next_buflen = blocksize;
794 to_hash -= blocksize;
795 }
796
Yuan Kang045e3672012-06-22 19:48:47 -0500797 if (to_hash) {
Horia Geantăa5e5c132019-05-03 17:17:38 +0300798 int pad_nents;
Horia Geantă059d73e2019-06-10 16:30:58 +0300799 int src_len = req->nbytes - *next_buflen;
Horia Geantăa5e5c132019-05-03 17:17:38 +0300800
Horia Geantă059d73e2019-06-10 16:30:58 +0300801 src_nents = sg_nents_for_len(req->src, src_len);
LABBE Corentinf9970c22015-11-04 21:13:38 +0100802 if (src_nents < 0) {
803 dev_err(jrdev, "Invalid number of src SG.\n");
804 return src_nents;
805 }
Russell Kingbc13c692016-08-08 18:05:03 +0100806
807 if (src_nents) {
808 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
809 DMA_TO_DEVICE);
810 if (!mapped_nents) {
811 dev_err(jrdev, "unable to DMA map source\n");
812 return -ENOMEM;
813 }
814 } else {
815 mapped_nents = 0;
816 }
817
Yuan Kang045e3672012-06-22 19:48:47 -0500818 sec4_sg_src_index = 1 + (*buflen ? 1 : 0);
Horia Geantăa5e5c132019-05-03 17:17:38 +0300819 pad_nents = pad_sg_nents(sec4_sg_src_index + mapped_nents);
820 sec4_sg_bytes = pad_nents * sizeof(struct sec4_sg_entry);
Yuan Kang045e3672012-06-22 19:48:47 -0500821
822 /*
823 * allocate space for base edesc and hw desc commands,
824 * link tables
825 */
Horia Geantăa5e5c132019-05-03 17:17:38 +0300826 edesc = ahash_edesc_alloc(ctx, pad_nents, ctx->sh_desc_update,
Russell King30a43b42016-08-08 18:05:13 +0100827 ctx->sh_desc_update_dma, flags);
Yuan Kang045e3672012-06-22 19:48:47 -0500828 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +0100829 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -0500830 return -ENOMEM;
831 }
832
833 edesc->src_nents = src_nents;
834 edesc->sec4_sg_bytes = sec4_sg_bytes;
Yuan Kang045e3672012-06-22 19:48:47 -0500835
Horia Geantădfcd8392017-11-01 09:13:11 +0200836 ret = ctx_map_to_sec4_sg(jrdev, state, ctx->ctx_len,
Horia Geantace572082014-07-11 15:34:49 +0300837 edesc->sec4_sg, DMA_BIDIRECTIONAL);
838 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200839 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -0500840
Horia Geantă944c3d42017-02-10 14:07:25 +0200841 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
842 if (ret)
843 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -0500844
Iuliana Prodanb4e9e932019-03-22 14:12:30 +0200845 if (mapped_nents)
Horia Geantă059d73e2019-06-10 16:30:58 +0300846 sg_to_sec4_sg_last(req->src, src_len,
Russell Kingbc13c692016-08-08 18:05:03 +0100847 edesc->sec4_sg + sec4_sg_src_index,
848 0);
Iuliana Prodanb4e9e932019-03-22 14:12:30 +0200849 else
Horia Geantă297b9ce2017-07-18 18:30:47 +0300850 sg_to_sec4_set_last(edesc->sec4_sg + sec4_sg_src_index -
851 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500852
Yuan Kang045e3672012-06-22 19:48:47 -0500853 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -0500854
Ruchika Gupta1da2be32014-06-23 19:50:26 +0530855 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
856 sec4_sg_bytes,
857 DMA_TO_DEVICE);
Horia Geantace572082014-07-11 15:34:49 +0300858 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
859 dev_err(jrdev, "unable to map S/G table\n");
Russell King32686d32016-08-08 18:04:58 +0100860 ret = -ENOMEM;
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200861 goto unmap_ctx;
Horia Geantace572082014-07-11 15:34:49 +0300862 }
Ruchika Gupta1da2be32014-06-23 19:50:26 +0530863
Yuan Kang045e3672012-06-22 19:48:47 -0500864 append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len +
865 to_hash, LDST_SGF);
866
867 append_seq_out_ptr(desc, state->ctx_dma, ctx->ctx_len, 0);
868
Sascha Hauer6e005502019-05-23 10:50:29 +0200869 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
870 DUMP_PREFIX_ADDRESS, 16, 4, desc,
871 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500872
873 ret = caam_jr_enqueue(jrdev, desc, ahash_done_bi, req);
Russell King32686d32016-08-08 18:04:58 +0100874 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200875 goto unmap_ctx;
Russell King32686d32016-08-08 18:04:58 +0100876
877 ret = -EINPROGRESS;
Yuan Kang045e3672012-06-22 19:48:47 -0500878 } else if (*next_buflen) {
Cristian Stoica307fd5432014-08-14 13:51:56 +0300879 scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
880 req->nbytes, 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500881 *buflen = *next_buflen;
Sascha Hauer6e005502019-05-23 10:50:29 +0200882
Andrei Botila46b49ab2019-12-09 18:59:55 +0200883 print_hex_dump_debug("buf@" __stringify(__LINE__)": ",
884 DUMP_PREFIX_ADDRESS, 16, 4, buf,
885 *buflen, 1);
886 }
Yuan Kang045e3672012-06-22 19:48:47 -0500887
888 return ret;
Roland Hieber16c8ad72019-01-22 16:26:08 +0100889unmap_ctx:
Russell King32686d32016-08-08 18:04:58 +0100890 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
891 kfree(edesc);
892 return ret;
Yuan Kang045e3672012-06-22 19:48:47 -0500893}
894
895static int ahash_final_ctx(struct ahash_request *req)
896{
897 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
898 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
899 struct caam_hash_state *state = ahash_request_ctx(req);
900 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +0300901 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
902 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +0200903 int buflen = state->buflen;
Russell King30a43b42016-08-08 18:05:13 +0100904 u32 *desc;
Horia Geantăa5e5c132019-05-03 17:17:38 +0300905 int sec4_sg_bytes;
Yuan Kang045e3672012-06-22 19:48:47 -0500906 int digestsize = crypto_ahash_digestsize(ahash);
907 struct ahash_edesc *edesc;
Markus Elfring9e6df0f2016-09-15 15:24:02 +0200908 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -0500909
Horia Geantăa5e5c132019-05-03 17:17:38 +0300910 sec4_sg_bytes = pad_sg_nents(1 + (buflen ? 1 : 0)) *
911 sizeof(struct sec4_sg_entry);
Yuan Kang045e3672012-06-22 19:48:47 -0500912
913 /* allocate space for base edesc and hw desc commands, link tables */
Horia Geantăa5e5c132019-05-03 17:17:38 +0300914 edesc = ahash_edesc_alloc(ctx, 4, ctx->sh_desc_fin,
915 ctx->sh_desc_fin_dma, flags);
Russell King5588d032016-08-08 18:05:08 +0100916 if (!edesc)
Yuan Kang045e3672012-06-22 19:48:47 -0500917 return -ENOMEM;
Yuan Kang045e3672012-06-22 19:48:47 -0500918
Yuan Kang045e3672012-06-22 19:48:47 -0500919 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -0500920
921 edesc->sec4_sg_bytes = sec4_sg_bytes;
Yuan Kang045e3672012-06-22 19:48:47 -0500922
Horia Geantădfcd8392017-11-01 09:13:11 +0200923 ret = ctx_map_to_sec4_sg(jrdev, state, ctx->ctx_len,
Horia Geantăc19650d2019-01-26 20:02:15 +0200924 edesc->sec4_sg, DMA_BIDIRECTIONAL);
Horia Geantace572082014-07-11 15:34:49 +0300925 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200926 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -0500927
Horia Geantă944c3d42017-02-10 14:07:25 +0200928 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
929 if (ret)
930 goto unmap_ctx;
931
Horia Geantăa5e5c132019-05-03 17:17:38 +0300932 sg_to_sec4_set_last(edesc->sec4_sg + (buflen ? 1 : 0));
Yuan Kang045e3672012-06-22 19:48:47 -0500933
Ruchika Gupta1da2be32014-06-23 19:50:26 +0530934 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
935 sec4_sg_bytes, DMA_TO_DEVICE);
Horia Geantace572082014-07-11 15:34:49 +0300936 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
937 dev_err(jrdev, "unable to map S/G table\n");
Russell King32686d32016-08-08 18:04:58 +0100938 ret = -ENOMEM;
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200939 goto unmap_ctx;
Horia Geantace572082014-07-11 15:34:49 +0300940 }
Ruchika Gupta1da2be32014-06-23 19:50:26 +0530941
Yuan Kang045e3672012-06-22 19:48:47 -0500942 append_seq_in_ptr(desc, edesc->sec4_sg_dma, ctx->ctx_len + buflen,
943 LDST_SGF);
Horia Geantăc19650d2019-01-26 20:02:15 +0200944 append_seq_out_ptr(desc, state->ctx_dma, digestsize, 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500945
Sascha Hauer6e005502019-05-23 10:50:29 +0200946 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
947 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
948 1);
Yuan Kang045e3672012-06-22 19:48:47 -0500949
950 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
Russell King32686d32016-08-08 18:04:58 +0100951 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200952 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -0500953
Russell King32686d32016-08-08 18:04:58 +0100954 return -EINPROGRESS;
Markus Elfring58b0e5d2016-09-15 14:43:38 +0200955 unmap_ctx:
Horia Geantăc19650d2019-01-26 20:02:15 +0200956 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
Russell King32686d32016-08-08 18:04:58 +0100957 kfree(edesc);
Yuan Kang045e3672012-06-22 19:48:47 -0500958 return ret;
959}
960
961static int ahash_finup_ctx(struct ahash_request *req)
962{
963 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
964 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
965 struct caam_hash_state *state = ahash_request_ctx(req);
966 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +0300967 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
968 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +0200969 int buflen = state->buflen;
Russell King30a43b42016-08-08 18:05:13 +0100970 u32 *desc;
Russell King65cf1642016-08-08 18:05:19 +0100971 int sec4_sg_src_index;
Russell Kingbc13c692016-08-08 18:05:03 +0100972 int src_nents, mapped_nents;
Yuan Kang045e3672012-06-22 19:48:47 -0500973 int digestsize = crypto_ahash_digestsize(ahash);
974 struct ahash_edesc *edesc;
Markus Elfring9e6df0f2016-09-15 15:24:02 +0200975 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -0500976
LABBE Corentin13fb8fd2015-09-23 13:55:27 +0200977 src_nents = sg_nents_for_len(req->src, req->nbytes);
LABBE Corentinf9970c22015-11-04 21:13:38 +0100978 if (src_nents < 0) {
979 dev_err(jrdev, "Invalid number of src SG.\n");
980 return src_nents;
981 }
Russell Kingbc13c692016-08-08 18:05:03 +0100982
983 if (src_nents) {
984 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
985 DMA_TO_DEVICE);
986 if (!mapped_nents) {
987 dev_err(jrdev, "unable to DMA map source\n");
988 return -ENOMEM;
989 }
990 } else {
991 mapped_nents = 0;
992 }
993
Yuan Kang045e3672012-06-22 19:48:47 -0500994 sec4_sg_src_index = 1 + (buflen ? 1 : 0);
Yuan Kang045e3672012-06-22 19:48:47 -0500995
996 /* allocate space for base edesc and hw desc commands, link tables */
Russell King5588d032016-08-08 18:05:08 +0100997 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
Horia Geantă9a1a1c02016-11-09 10:46:24 +0200998 ctx->sh_desc_fin, ctx->sh_desc_fin_dma,
Russell King5588d032016-08-08 18:05:08 +0100999 flags);
Yuan Kang045e3672012-06-22 19:48:47 -05001000 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +01001001 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001002 return -ENOMEM;
1003 }
1004
Yuan Kang045e3672012-06-22 19:48:47 -05001005 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001006
1007 edesc->src_nents = src_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001008
Horia Geantădfcd8392017-11-01 09:13:11 +02001009 ret = ctx_map_to_sec4_sg(jrdev, state, ctx->ctx_len,
Horia Geantăc19650d2019-01-26 20:02:15 +02001010 edesc->sec4_sg, DMA_BIDIRECTIONAL);
Horia Geantace572082014-07-11 15:34:49 +03001011 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001012 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001013
Horia Geantă944c3d42017-02-10 14:07:25 +02001014 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg + 1, state);
1015 if (ret)
1016 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001017
Russell King65cf1642016-08-08 18:05:19 +01001018 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents,
1019 sec4_sg_src_index, ctx->ctx_len + buflen,
1020 req->nbytes);
1021 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001022 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001023
Horia Geantăc19650d2019-01-26 20:02:15 +02001024 append_seq_out_ptr(desc, state->ctx_dma, digestsize, 0);
Yuan Kang045e3672012-06-22 19:48:47 -05001025
Sascha Hauer6e005502019-05-23 10:50:29 +02001026 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1027 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1028 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001029
1030 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_src, req);
Russell King32686d32016-08-08 18:04:58 +01001031 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001032 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001033
Russell King32686d32016-08-08 18:04:58 +01001034 return -EINPROGRESS;
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001035 unmap_ctx:
Horia Geantăc19650d2019-01-26 20:02:15 +02001036 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
Russell King32686d32016-08-08 18:04:58 +01001037 kfree(edesc);
Yuan Kang045e3672012-06-22 19:48:47 -05001038 return ret;
1039}
1040
1041static int ahash_digest(struct ahash_request *req)
1042{
1043 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1044 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
Horia Geantă944c3d42017-02-10 14:07:25 +02001045 struct caam_hash_state *state = ahash_request_ctx(req);
Yuan Kang045e3672012-06-22 19:48:47 -05001046 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +03001047 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1048 GFP_KERNEL : GFP_ATOMIC;
Russell King30a43b42016-08-08 18:05:13 +01001049 u32 *desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001050 int digestsize = crypto_ahash_digestsize(ahash);
Russell King65cf1642016-08-08 18:05:19 +01001051 int src_nents, mapped_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001052 struct ahash_edesc *edesc;
Markus Elfring9e6df0f2016-09-15 15:24:02 +02001053 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001054
Horia Geantă944c3d42017-02-10 14:07:25 +02001055 state->buf_dma = 0;
1056
Russell King3d5a2db2016-08-08 18:04:31 +01001057 src_nents = sg_nents_for_len(req->src, req->nbytes);
LABBE Corentinf9970c22015-11-04 21:13:38 +01001058 if (src_nents < 0) {
1059 dev_err(jrdev, "Invalid number of src SG.\n");
1060 return src_nents;
1061 }
Russell Kingbc13c692016-08-08 18:05:03 +01001062
1063 if (src_nents) {
1064 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1065 DMA_TO_DEVICE);
1066 if (!mapped_nents) {
1067 dev_err(jrdev, "unable to map source for DMA\n");
1068 return -ENOMEM;
1069 }
1070 } else {
1071 mapped_nents = 0;
1072 }
1073
Yuan Kang045e3672012-06-22 19:48:47 -05001074 /* allocate space for base edesc and hw desc commands, link tables */
Russell King5588d032016-08-08 18:05:08 +01001075 edesc = ahash_edesc_alloc(ctx, mapped_nents > 1 ? mapped_nents : 0,
Russell King30a43b42016-08-08 18:05:13 +01001076 ctx->sh_desc_digest, ctx->sh_desc_digest_dma,
Russell King5588d032016-08-08 18:05:08 +01001077 flags);
Yuan Kang045e3672012-06-22 19:48:47 -05001078 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +01001079 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001080 return -ENOMEM;
1081 }
Russell King343e44b2016-08-08 18:04:52 +01001082
Yuan Kang045e3672012-06-22 19:48:47 -05001083 edesc->src_nents = src_nents;
1084
Russell King65cf1642016-08-08 18:05:19 +01001085 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 0, 0,
1086 req->nbytes);
1087 if (ret) {
1088 ahash_unmap(jrdev, edesc, req, digestsize);
1089 kfree(edesc);
1090 return ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001091 }
Russell King65cf1642016-08-08 18:05:19 +01001092
1093 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001094
Horia Geantăc19650d2019-01-26 20:02:15 +02001095 ret = map_seq_out_ptr_ctx(desc, jrdev, state, digestsize);
1096 if (ret) {
Russell King32686d32016-08-08 18:04:58 +01001097 ahash_unmap(jrdev, edesc, req, digestsize);
1098 kfree(edesc);
Horia Geantace572082014-07-11 15:34:49 +03001099 return -ENOMEM;
1100 }
Yuan Kang045e3672012-06-22 19:48:47 -05001101
Sascha Hauer6e005502019-05-23 10:50:29 +02001102 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1103 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1104 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001105
1106 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1107 if (!ret) {
1108 ret = -EINPROGRESS;
1109 } else {
Horia Geantăc19650d2019-01-26 20:02:15 +02001110 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001111 kfree(edesc);
1112 }
1113
1114 return ret;
1115}
1116
1117/* submit ahash final if it the first job descriptor */
1118static int ahash_final_no_ctx(struct ahash_request *req)
1119{
1120 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1121 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1122 struct caam_hash_state *state = ahash_request_ctx(req);
1123 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +03001124 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1125 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001126 u8 *buf = state->buf;
1127 int buflen = state->buflen;
Russell King30a43b42016-08-08 18:05:13 +01001128 u32 *desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001129 int digestsize = crypto_ahash_digestsize(ahash);
1130 struct ahash_edesc *edesc;
Markus Elfring9e6df0f2016-09-15 15:24:02 +02001131 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001132
1133 /* allocate space for base edesc and hw desc commands, link tables */
Russell King30a43b42016-08-08 18:05:13 +01001134 edesc = ahash_edesc_alloc(ctx, 0, ctx->sh_desc_digest,
1135 ctx->sh_desc_digest_dma, flags);
Russell King5588d032016-08-08 18:05:08 +01001136 if (!edesc)
Yuan Kang045e3672012-06-22 19:48:47 -05001137 return -ENOMEM;
Yuan Kang045e3672012-06-22 19:48:47 -05001138
Yuan Kang045e3672012-06-22 19:48:47 -05001139 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001140
Aymen Sghaier04e6d252018-12-19 16:36:44 +02001141 if (buflen) {
1142 state->buf_dma = dma_map_single(jrdev, buf, buflen,
1143 DMA_TO_DEVICE);
1144 if (dma_mapping_error(jrdev, state->buf_dma)) {
1145 dev_err(jrdev, "unable to map src\n");
1146 goto unmap;
1147 }
Yuan Kang045e3672012-06-22 19:48:47 -05001148
Aymen Sghaier04e6d252018-12-19 16:36:44 +02001149 append_seq_in_ptr(desc, state->buf_dma, buflen, 0);
1150 }
Yuan Kang045e3672012-06-22 19:48:47 -05001151
Horia Geantăc19650d2019-01-26 20:02:15 +02001152 ret = map_seq_out_ptr_ctx(desc, jrdev, state, digestsize);
1153 if (ret)
Markus Elfring06435f342016-09-15 16:00:55 +02001154 goto unmap;
Yuan Kang045e3672012-06-22 19:48:47 -05001155
Sascha Hauer6e005502019-05-23 10:50:29 +02001156 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1157 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1158 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001159
1160 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1161 if (!ret) {
1162 ret = -EINPROGRESS;
1163 } else {
Horia Geantăc19650d2019-01-26 20:02:15 +02001164 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001165 kfree(edesc);
1166 }
1167
1168 return ret;
Markus Elfring06435f342016-09-15 16:00:55 +02001169 unmap:
1170 ahash_unmap(jrdev, edesc, req, digestsize);
1171 kfree(edesc);
1172 return -ENOMEM;
1173
Yuan Kang045e3672012-06-22 19:48:47 -05001174}
1175
1176/* submit ahash update if it the first job descriptor after update */
1177static int ahash_update_no_ctx(struct ahash_request *req)
1178{
1179 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1180 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1181 struct caam_hash_state *state = ahash_request_ctx(req);
1182 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +03001183 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1184 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001185 u8 *buf = state->buf;
1186 int *buflen = &state->buflen;
1187 int *next_buflen = &state->next_buflen;
Iuliana Prodan12b85672018-12-21 17:59:10 +02001188 int blocksize = crypto_ahash_blocksize(ahash);
Yuan Kang045e3672012-06-22 19:48:47 -05001189 int in_len = *buflen + req->nbytes, to_hash;
Russell Kingbc13c692016-08-08 18:05:03 +01001190 int sec4_sg_bytes, src_nents, mapped_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001191 struct ahash_edesc *edesc;
Russell King30a43b42016-08-08 18:05:13 +01001192 u32 *desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001193 int ret = 0;
Yuan Kang045e3672012-06-22 19:48:47 -05001194
Iuliana Prodan12b85672018-12-21 17:59:10 +02001195 *next_buflen = in_len & (blocksize - 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001196 to_hash = in_len - *next_buflen;
1197
Iuliana Prodan12b85672018-12-21 17:59:10 +02001198 /*
Iuliana Prodan87870cf2019-01-21 15:22:42 +02001199 * For XCBC and CMAC, if to_hash is multiple of block size,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001200 * keep last block in internal buffer
1201 */
Iuliana Prodan87870cf2019-01-21 15:22:42 +02001202 if ((is_xcbc_aes(ctx->adata.algtype) ||
1203 is_cmac_aes(ctx->adata.algtype)) && to_hash >= blocksize &&
1204 (*next_buflen == 0)) {
Iuliana Prodan12b85672018-12-21 17:59:10 +02001205 *next_buflen = blocksize;
1206 to_hash -= blocksize;
1207 }
1208
Yuan Kang045e3672012-06-22 19:48:47 -05001209 if (to_hash) {
Horia Geantăa5e5c132019-05-03 17:17:38 +03001210 int pad_nents;
Horia Geantă059d73e2019-06-10 16:30:58 +03001211 int src_len = req->nbytes - *next_buflen;
Horia Geantăa5e5c132019-05-03 17:17:38 +03001212
Horia Geantă059d73e2019-06-10 16:30:58 +03001213 src_nents = sg_nents_for_len(req->src, src_len);
LABBE Corentinf9970c22015-11-04 21:13:38 +01001214 if (src_nents < 0) {
1215 dev_err(jrdev, "Invalid number of src SG.\n");
1216 return src_nents;
1217 }
Russell Kingbc13c692016-08-08 18:05:03 +01001218
1219 if (src_nents) {
1220 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1221 DMA_TO_DEVICE);
1222 if (!mapped_nents) {
1223 dev_err(jrdev, "unable to DMA map source\n");
1224 return -ENOMEM;
1225 }
1226 } else {
1227 mapped_nents = 0;
1228 }
1229
Horia Geantăa5e5c132019-05-03 17:17:38 +03001230 pad_nents = pad_sg_nents(1 + mapped_nents);
1231 sec4_sg_bytes = pad_nents * sizeof(struct sec4_sg_entry);
Yuan Kang045e3672012-06-22 19:48:47 -05001232
1233 /*
1234 * allocate space for base edesc and hw desc commands,
1235 * link tables
1236 */
Horia Geantăa5e5c132019-05-03 17:17:38 +03001237 edesc = ahash_edesc_alloc(ctx, pad_nents,
Russell King30a43b42016-08-08 18:05:13 +01001238 ctx->sh_desc_update_first,
1239 ctx->sh_desc_update_first_dma,
1240 flags);
Yuan Kang045e3672012-06-22 19:48:47 -05001241 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +01001242 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001243 return -ENOMEM;
1244 }
1245
1246 edesc->src_nents = src_nents;
1247 edesc->sec4_sg_bytes = sec4_sg_bytes;
Yuan Kang045e3672012-06-22 19:48:47 -05001248
Horia Geantă944c3d42017-02-10 14:07:25 +02001249 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1250 if (ret)
1251 goto unmap_ctx;
1252
Horia Geantă059d73e2019-06-10 16:30:58 +03001253 sg_to_sec4_sg_last(req->src, src_len, edesc->sec4_sg + 1, 0);
Russell Kingbc13c692016-08-08 18:05:03 +01001254
Yuan Kang045e3672012-06-22 19:48:47 -05001255 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001256
Ruchika Gupta1da2be32014-06-23 19:50:26 +05301257 edesc->sec4_sg_dma = dma_map_single(jrdev, edesc->sec4_sg,
1258 sec4_sg_bytes,
1259 DMA_TO_DEVICE);
Horia Geantace572082014-07-11 15:34:49 +03001260 if (dma_mapping_error(jrdev, edesc->sec4_sg_dma)) {
1261 dev_err(jrdev, "unable to map S/G table\n");
Russell King32686d32016-08-08 18:04:58 +01001262 ret = -ENOMEM;
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001263 goto unmap_ctx;
Horia Geantace572082014-07-11 15:34:49 +03001264 }
Ruchika Gupta1da2be32014-06-23 19:50:26 +05301265
Yuan Kang045e3672012-06-22 19:48:47 -05001266 append_seq_in_ptr(desc, edesc->sec4_sg_dma, to_hash, LDST_SGF);
1267
Horia Geantace572082014-07-11 15:34:49 +03001268 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1269 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001270 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001271
Sascha Hauer6e005502019-05-23 10:50:29 +02001272 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1273 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1274 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001275
1276 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
Russell King32686d32016-08-08 18:04:58 +01001277 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001278 goto unmap_ctx;
Russell King32686d32016-08-08 18:04:58 +01001279
1280 ret = -EINPROGRESS;
1281 state->update = ahash_update_ctx;
1282 state->finup = ahash_finup_ctx;
1283 state->final = ahash_final_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001284 } else if (*next_buflen) {
Cristian Stoica307fd5432014-08-14 13:51:56 +03001285 scatterwalk_map_and_copy(buf + *buflen, req->src, 0,
1286 req->nbytes, 0);
Yuan Kang045e3672012-06-22 19:48:47 -05001287 *buflen = *next_buflen;
Sascha Hauer6e005502019-05-23 10:50:29 +02001288
Andrei Botila46b49ab2019-12-09 18:59:55 +02001289 print_hex_dump_debug("buf@" __stringify(__LINE__)": ",
1290 DUMP_PREFIX_ADDRESS, 16, 4, buf,
1291 *buflen, 1);
1292 }
Yuan Kang045e3672012-06-22 19:48:47 -05001293
1294 return ret;
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001295 unmap_ctx:
Russell King32686d32016-08-08 18:04:58 +01001296 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1297 kfree(edesc);
1298 return ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001299}
1300
1301/* submit ahash finup if it the first job descriptor after update */
1302static int ahash_finup_no_ctx(struct ahash_request *req)
1303{
1304 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1305 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1306 struct caam_hash_state *state = ahash_request_ctx(req);
1307 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +03001308 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1309 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001310 int buflen = state->buflen;
Russell King30a43b42016-08-08 18:05:13 +01001311 u32 *desc;
Russell Kingbc13c692016-08-08 18:05:03 +01001312 int sec4_sg_bytes, sec4_sg_src_index, src_nents, mapped_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001313 int digestsize = crypto_ahash_digestsize(ahash);
1314 struct ahash_edesc *edesc;
Markus Elfring9e6df0f2016-09-15 15:24:02 +02001315 int ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001316
LABBE Corentin13fb8fd2015-09-23 13:55:27 +02001317 src_nents = sg_nents_for_len(req->src, req->nbytes);
LABBE Corentinf9970c22015-11-04 21:13:38 +01001318 if (src_nents < 0) {
1319 dev_err(jrdev, "Invalid number of src SG.\n");
1320 return src_nents;
1321 }
Russell Kingbc13c692016-08-08 18:05:03 +01001322
1323 if (src_nents) {
1324 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1325 DMA_TO_DEVICE);
1326 if (!mapped_nents) {
1327 dev_err(jrdev, "unable to DMA map source\n");
1328 return -ENOMEM;
1329 }
1330 } else {
1331 mapped_nents = 0;
1332 }
1333
Yuan Kang045e3672012-06-22 19:48:47 -05001334 sec4_sg_src_index = 2;
Russell Kingbc13c692016-08-08 18:05:03 +01001335 sec4_sg_bytes = (sec4_sg_src_index + mapped_nents) *
Yuan Kang045e3672012-06-22 19:48:47 -05001336 sizeof(struct sec4_sg_entry);
1337
1338 /* allocate space for base edesc and hw desc commands, link tables */
Russell King30a43b42016-08-08 18:05:13 +01001339 edesc = ahash_edesc_alloc(ctx, sec4_sg_src_index + mapped_nents,
1340 ctx->sh_desc_digest, ctx->sh_desc_digest_dma,
1341 flags);
Yuan Kang045e3672012-06-22 19:48:47 -05001342 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +01001343 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001344 return -ENOMEM;
1345 }
1346
Yuan Kang045e3672012-06-22 19:48:47 -05001347 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001348
1349 edesc->src_nents = src_nents;
1350 edesc->sec4_sg_bytes = sec4_sg_bytes;
Yuan Kang045e3672012-06-22 19:48:47 -05001351
Horia Geantă944c3d42017-02-10 14:07:25 +02001352 ret = buf_map_to_sec4_sg(jrdev, edesc->sec4_sg, state);
1353 if (ret)
1354 goto unmap;
Yuan Kang045e3672012-06-22 19:48:47 -05001355
Russell King65cf1642016-08-08 18:05:19 +01001356 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 1, buflen,
1357 req->nbytes);
1358 if (ret) {
Horia Geantace572082014-07-11 15:34:49 +03001359 dev_err(jrdev, "unable to map S/G table\n");
Markus Elfring06435f342016-09-15 16:00:55 +02001360 goto unmap;
Horia Geantace572082014-07-11 15:34:49 +03001361 }
Ruchika Gupta1da2be32014-06-23 19:50:26 +05301362
Horia Geantăc19650d2019-01-26 20:02:15 +02001363 ret = map_seq_out_ptr_ctx(desc, jrdev, state, digestsize);
1364 if (ret)
Markus Elfring06435f342016-09-15 16:00:55 +02001365 goto unmap;
Yuan Kang045e3672012-06-22 19:48:47 -05001366
Sascha Hauer6e005502019-05-23 10:50:29 +02001367 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1368 DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc),
1369 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001370
1371 ret = caam_jr_enqueue(jrdev, desc, ahash_done, req);
1372 if (!ret) {
1373 ret = -EINPROGRESS;
1374 } else {
Horia Geantăc19650d2019-01-26 20:02:15 +02001375 ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001376 kfree(edesc);
1377 }
1378
1379 return ret;
Markus Elfring06435f342016-09-15 16:00:55 +02001380 unmap:
1381 ahash_unmap(jrdev, edesc, req, digestsize);
1382 kfree(edesc);
1383 return -ENOMEM;
1384
Yuan Kang045e3672012-06-22 19:48:47 -05001385}
1386
1387/* submit first update job descriptor after init */
1388static int ahash_update_first(struct ahash_request *req)
1389{
1390 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
1391 struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
1392 struct caam_hash_state *state = ahash_request_ctx(req);
1393 struct device *jrdev = ctx->jrdev;
Horia Geantă019d62d2017-06-19 11:44:46 +03001394 gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
1395 GFP_KERNEL : GFP_ATOMIC;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001396 u8 *buf = state->buf;
1397 int *buflen = &state->buflen;
1398 int *next_buflen = &state->next_buflen;
Yuan Kang045e3672012-06-22 19:48:47 -05001399 int to_hash;
Iuliana Prodan12b85672018-12-21 17:59:10 +02001400 int blocksize = crypto_ahash_blocksize(ahash);
Russell King30a43b42016-08-08 18:05:13 +01001401 u32 *desc;
Russell King65cf1642016-08-08 18:05:19 +01001402 int src_nents, mapped_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001403 struct ahash_edesc *edesc;
1404 int ret = 0;
Yuan Kang045e3672012-06-22 19:48:47 -05001405
Iuliana Prodan12b85672018-12-21 17:59:10 +02001406 *next_buflen = req->nbytes & (blocksize - 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001407 to_hash = req->nbytes - *next_buflen;
1408
Iuliana Prodan12b85672018-12-21 17:59:10 +02001409 /*
Iuliana Prodan87870cf2019-01-21 15:22:42 +02001410 * For XCBC and CMAC, if to_hash is multiple of block size,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001411 * keep last block in internal buffer
1412 */
Iuliana Prodan87870cf2019-01-21 15:22:42 +02001413 if ((is_xcbc_aes(ctx->adata.algtype) ||
1414 is_cmac_aes(ctx->adata.algtype)) && to_hash >= blocksize &&
1415 (*next_buflen == 0)) {
Iuliana Prodan12b85672018-12-21 17:59:10 +02001416 *next_buflen = blocksize;
1417 to_hash -= blocksize;
1418 }
1419
Yuan Kang045e3672012-06-22 19:48:47 -05001420 if (to_hash) {
Russell King3d5a2db2016-08-08 18:04:31 +01001421 src_nents = sg_nents_for_len(req->src,
1422 req->nbytes - *next_buflen);
LABBE Corentinf9970c22015-11-04 21:13:38 +01001423 if (src_nents < 0) {
1424 dev_err(jrdev, "Invalid number of src SG.\n");
1425 return src_nents;
1426 }
Russell Kingbc13c692016-08-08 18:05:03 +01001427
1428 if (src_nents) {
1429 mapped_nents = dma_map_sg(jrdev, req->src, src_nents,
1430 DMA_TO_DEVICE);
1431 if (!mapped_nents) {
1432 dev_err(jrdev, "unable to map source for DMA\n");
1433 return -ENOMEM;
1434 }
1435 } else {
1436 mapped_nents = 0;
1437 }
Yuan Kang045e3672012-06-22 19:48:47 -05001438
1439 /*
1440 * allocate space for base edesc and hw desc commands,
1441 * link tables
1442 */
Russell King5588d032016-08-08 18:05:08 +01001443 edesc = ahash_edesc_alloc(ctx, mapped_nents > 1 ?
Russell King30a43b42016-08-08 18:05:13 +01001444 mapped_nents : 0,
1445 ctx->sh_desc_update_first,
1446 ctx->sh_desc_update_first_dma,
1447 flags);
Yuan Kang045e3672012-06-22 19:48:47 -05001448 if (!edesc) {
Russell Kingbc13c692016-08-08 18:05:03 +01001449 dma_unmap_sg(jrdev, req->src, src_nents, DMA_TO_DEVICE);
Yuan Kang045e3672012-06-22 19:48:47 -05001450 return -ENOMEM;
1451 }
1452
1453 edesc->src_nents = src_nents;
Yuan Kang045e3672012-06-22 19:48:47 -05001454
Russell King65cf1642016-08-08 18:05:19 +01001455 ret = ahash_edesc_add_src(ctx, edesc, req, mapped_nents, 0, 0,
1456 to_hash);
1457 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001458 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001459
Yuan Kang045e3672012-06-22 19:48:47 -05001460 desc = edesc->hw_desc;
Yuan Kang045e3672012-06-22 19:48:47 -05001461
Horia Geantace572082014-07-11 15:34:49 +03001462 ret = map_seq_out_ptr_ctx(desc, jrdev, state, ctx->ctx_len);
1463 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001464 goto unmap_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001465
Sascha Hauer6e005502019-05-23 10:50:29 +02001466 print_hex_dump_debug("jobdesc@"__stringify(__LINE__)": ",
1467 DUMP_PREFIX_ADDRESS, 16, 4, desc,
1468 desc_bytes(desc), 1);
Yuan Kang045e3672012-06-22 19:48:47 -05001469
Russell King32686d32016-08-08 18:04:58 +01001470 ret = caam_jr_enqueue(jrdev, desc, ahash_done_ctx_dst, req);
1471 if (ret)
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001472 goto unmap_ctx;
Russell King32686d32016-08-08 18:04:58 +01001473
1474 ret = -EINPROGRESS;
1475 state->update = ahash_update_ctx;
1476 state->finup = ahash_finup_ctx;
1477 state->final = ahash_final_ctx;
Yuan Kang045e3672012-06-22 19:48:47 -05001478 } else if (*next_buflen) {
1479 state->update = ahash_update_no_ctx;
1480 state->finup = ahash_finup_no_ctx;
1481 state->final = ahash_final_no_ctx;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001482 scatterwalk_map_and_copy(buf, req->src, 0,
Cristian Stoica307fd5432014-08-14 13:51:56 +03001483 req->nbytes, 0);
Andrei Botila46b49ab2019-12-09 18:59:55 +02001484 *buflen = *next_buflen;
Sascha Hauer6e005502019-05-23 10:50:29 +02001485
Andrei Botila46b49ab2019-12-09 18:59:55 +02001486 print_hex_dump_debug("buf@" __stringify(__LINE__)": ",
1487 DUMP_PREFIX_ADDRESS, 16, 4, buf,
1488 *buflen, 1);
1489 }
Yuan Kang045e3672012-06-22 19:48:47 -05001490
1491 return ret;
Markus Elfring58b0e5d2016-09-15 14:43:38 +02001492 unmap_ctx:
Russell King32686d32016-08-08 18:04:58 +01001493 ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_TO_DEVICE);
1494 kfree(edesc);
1495 return ret;
Yuan Kang045e3672012-06-22 19:48:47 -05001496}
1497
1498static int ahash_finup_first(struct ahash_request *req)
1499{
1500 return ahash_digest(req);
1501}
1502
1503static int ahash_init(struct ahash_request *req)
1504{
1505 struct caam_hash_state *state = ahash_request_ctx(req);
1506
1507 state->update = ahash_update_first;
1508 state->finup = ahash_finup_first;
1509 state->final = ahash_final_no_ctx;
1510
Horia Geantă87ec02e2017-02-10 14:07:23 +02001511 state->ctx_dma = 0;
Franck LENORMAND65055e22019-02-19 16:56:55 +02001512 state->ctx_dma_len = 0;
Horia Geantade0e35e2014-07-11 15:34:55 +03001513 state->buf_dma = 0;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001514 state->buflen = 0;
1515 state->next_buflen = 0;
Yuan Kang045e3672012-06-22 19:48:47 -05001516
1517 return 0;
1518}
1519
1520static int ahash_update(struct ahash_request *req)
1521{
1522 struct caam_hash_state *state = ahash_request_ctx(req);
1523
1524 return state->update(req);
1525}
1526
1527static int ahash_finup(struct ahash_request *req)
1528{
1529 struct caam_hash_state *state = ahash_request_ctx(req);
1530
1531 return state->finup(req);
1532}
1533
1534static int ahash_final(struct ahash_request *req)
1535{
1536 struct caam_hash_state *state = ahash_request_ctx(req);
1537
1538 return state->final(req);
1539}
1540
1541static int ahash_export(struct ahash_request *req, void *out)
1542{
Yuan Kang045e3672012-06-22 19:48:47 -05001543 struct caam_hash_state *state = ahash_request_ctx(req);
Russell King5ec90832015-10-18 17:51:25 +01001544 struct caam_export_state *export = out;
Andrei Botila46b49ab2019-12-09 18:59:55 +02001545 u8 *buf = state->buf;
1546 int len = state->buflen;
Russell King5ec90832015-10-18 17:51:25 +01001547
1548 memcpy(export->buf, buf, len);
1549 memcpy(export->caam_ctx, state->caam_ctx, sizeof(export->caam_ctx));
1550 export->buflen = len;
1551 export->update = state->update;
1552 export->final = state->final;
1553 export->finup = state->finup;
Russell King434b4212015-10-18 17:51:15 +01001554
Yuan Kang045e3672012-06-22 19:48:47 -05001555 return 0;
1556}
1557
1558static int ahash_import(struct ahash_request *req, const void *in)
1559{
Yuan Kang045e3672012-06-22 19:48:47 -05001560 struct caam_hash_state *state = ahash_request_ctx(req);
Russell King5ec90832015-10-18 17:51:25 +01001561 const struct caam_export_state *export = in;
Yuan Kang045e3672012-06-22 19:48:47 -05001562
Russell King5ec90832015-10-18 17:51:25 +01001563 memset(state, 0, sizeof(*state));
Andrei Botila46b49ab2019-12-09 18:59:55 +02001564 memcpy(state->buf, export->buf, export->buflen);
Russell King5ec90832015-10-18 17:51:25 +01001565 memcpy(state->caam_ctx, export->caam_ctx, sizeof(state->caam_ctx));
Andrei Botila46b49ab2019-12-09 18:59:55 +02001566 state->buflen = export->buflen;
Russell King5ec90832015-10-18 17:51:25 +01001567 state->update = export->update;
1568 state->final = export->final;
1569 state->finup = export->finup;
Russell King434b4212015-10-18 17:51:15 +01001570
Yuan Kang045e3672012-06-22 19:48:47 -05001571 return 0;
1572}
1573
1574struct caam_hash_template {
1575 char name[CRYPTO_MAX_ALG_NAME];
1576 char driver_name[CRYPTO_MAX_ALG_NAME];
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001577 char hmac_name[CRYPTO_MAX_ALG_NAME];
1578 char hmac_driver_name[CRYPTO_MAX_ALG_NAME];
Yuan Kang045e3672012-06-22 19:48:47 -05001579 unsigned int blocksize;
1580 struct ahash_alg template_ahash;
1581 u32 alg_type;
Yuan Kang045e3672012-06-22 19:48:47 -05001582};
1583
1584/* ahash descriptors */
1585static struct caam_hash_template driver_hash[] = {
1586 {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001587 .name = "sha1",
1588 .driver_name = "sha1-caam",
1589 .hmac_name = "hmac(sha1)",
1590 .hmac_driver_name = "hmac-sha1-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001591 .blocksize = SHA1_BLOCK_SIZE,
1592 .template_ahash = {
1593 .init = ahash_init,
1594 .update = ahash_update,
1595 .final = ahash_final,
1596 .finup = ahash_finup,
1597 .digest = ahash_digest,
1598 .export = ahash_export,
1599 .import = ahash_import,
1600 .setkey = ahash_setkey,
1601 .halg = {
1602 .digestsize = SHA1_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001603 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001604 },
Russell King659f3132015-10-18 17:51:31 +01001605 },
Yuan Kang045e3672012-06-22 19:48:47 -05001606 .alg_type = OP_ALG_ALGSEL_SHA1,
Yuan Kang045e3672012-06-22 19:48:47 -05001607 }, {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001608 .name = "sha224",
1609 .driver_name = "sha224-caam",
1610 .hmac_name = "hmac(sha224)",
1611 .hmac_driver_name = "hmac-sha224-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001612 .blocksize = SHA224_BLOCK_SIZE,
1613 .template_ahash = {
1614 .init = ahash_init,
1615 .update = ahash_update,
1616 .final = ahash_final,
1617 .finup = ahash_finup,
1618 .digest = ahash_digest,
1619 .export = ahash_export,
1620 .import = ahash_import,
1621 .setkey = ahash_setkey,
1622 .halg = {
1623 .digestsize = SHA224_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001624 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001625 },
Russell King659f3132015-10-18 17:51:31 +01001626 },
Yuan Kang045e3672012-06-22 19:48:47 -05001627 .alg_type = OP_ALG_ALGSEL_SHA224,
Yuan Kang045e3672012-06-22 19:48:47 -05001628 }, {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001629 .name = "sha256",
1630 .driver_name = "sha256-caam",
1631 .hmac_name = "hmac(sha256)",
1632 .hmac_driver_name = "hmac-sha256-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001633 .blocksize = SHA256_BLOCK_SIZE,
1634 .template_ahash = {
1635 .init = ahash_init,
1636 .update = ahash_update,
1637 .final = ahash_final,
1638 .finup = ahash_finup,
1639 .digest = ahash_digest,
1640 .export = ahash_export,
1641 .import = ahash_import,
1642 .setkey = ahash_setkey,
1643 .halg = {
1644 .digestsize = SHA256_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001645 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001646 },
Russell King659f3132015-10-18 17:51:31 +01001647 },
Yuan Kang045e3672012-06-22 19:48:47 -05001648 .alg_type = OP_ALG_ALGSEL_SHA256,
Yuan Kang045e3672012-06-22 19:48:47 -05001649 }, {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001650 .name = "sha384",
1651 .driver_name = "sha384-caam",
1652 .hmac_name = "hmac(sha384)",
1653 .hmac_driver_name = "hmac-sha384-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001654 .blocksize = SHA384_BLOCK_SIZE,
1655 .template_ahash = {
1656 .init = ahash_init,
1657 .update = ahash_update,
1658 .final = ahash_final,
1659 .finup = ahash_finup,
1660 .digest = ahash_digest,
1661 .export = ahash_export,
1662 .import = ahash_import,
1663 .setkey = ahash_setkey,
1664 .halg = {
1665 .digestsize = SHA384_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001666 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001667 },
Russell King659f3132015-10-18 17:51:31 +01001668 },
Yuan Kang045e3672012-06-22 19:48:47 -05001669 .alg_type = OP_ALG_ALGSEL_SHA384,
Yuan Kang045e3672012-06-22 19:48:47 -05001670 }, {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001671 .name = "sha512",
1672 .driver_name = "sha512-caam",
1673 .hmac_name = "hmac(sha512)",
1674 .hmac_driver_name = "hmac-sha512-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001675 .blocksize = SHA512_BLOCK_SIZE,
1676 .template_ahash = {
1677 .init = ahash_init,
1678 .update = ahash_update,
1679 .final = ahash_final,
1680 .finup = ahash_finup,
1681 .digest = ahash_digest,
1682 .export = ahash_export,
1683 .import = ahash_import,
1684 .setkey = ahash_setkey,
1685 .halg = {
1686 .digestsize = SHA512_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001687 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001688 },
Russell King659f3132015-10-18 17:51:31 +01001689 },
Yuan Kang045e3672012-06-22 19:48:47 -05001690 .alg_type = OP_ALG_ALGSEL_SHA512,
Yuan Kang045e3672012-06-22 19:48:47 -05001691 }, {
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001692 .name = "md5",
1693 .driver_name = "md5-caam",
1694 .hmac_name = "hmac(md5)",
1695 .hmac_driver_name = "hmac-md5-caam",
Yuan Kang045e3672012-06-22 19:48:47 -05001696 .blocksize = MD5_BLOCK_WORDS * 4,
1697 .template_ahash = {
1698 .init = ahash_init,
1699 .update = ahash_update,
1700 .final = ahash_final,
1701 .finup = ahash_finup,
1702 .digest = ahash_digest,
1703 .export = ahash_export,
1704 .import = ahash_import,
1705 .setkey = ahash_setkey,
1706 .halg = {
1707 .digestsize = MD5_DIGEST_SIZE,
Russell King5ec90832015-10-18 17:51:25 +01001708 .statesize = sizeof(struct caam_export_state),
Yuan Kang045e3672012-06-22 19:48:47 -05001709 },
Russell King659f3132015-10-18 17:51:31 +01001710 },
Yuan Kang045e3672012-06-22 19:48:47 -05001711 .alg_type = OP_ALG_ALGSEL_MD5,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001712 }, {
1713 .hmac_name = "xcbc(aes)",
1714 .hmac_driver_name = "xcbc-aes-caam",
1715 .blocksize = AES_BLOCK_SIZE,
1716 .template_ahash = {
1717 .init = ahash_init,
1718 .update = ahash_update,
1719 .final = ahash_final,
1720 .finup = ahash_finup,
1721 .digest = ahash_digest,
1722 .export = ahash_export,
1723 .import = ahash_import,
1724 .setkey = axcbc_setkey,
1725 .halg = {
1726 .digestsize = AES_BLOCK_SIZE,
1727 .statesize = sizeof(struct caam_export_state),
1728 },
1729 },
1730 .alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_XCBC_MAC,
Iuliana Prodan87870cf2019-01-21 15:22:42 +02001731 }, {
1732 .hmac_name = "cmac(aes)",
1733 .hmac_driver_name = "cmac-aes-caam",
1734 .blocksize = AES_BLOCK_SIZE,
1735 .template_ahash = {
1736 .init = ahash_init,
1737 .update = ahash_update,
1738 .final = ahash_final,
1739 .finup = ahash_finup,
1740 .digest = ahash_digest,
1741 .export = ahash_export,
1742 .import = ahash_import,
1743 .setkey = acmac_setkey,
1744 .halg = {
1745 .digestsize = AES_BLOCK_SIZE,
1746 .statesize = sizeof(struct caam_export_state),
1747 },
1748 },
1749 .alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CMAC,
Yuan Kang045e3672012-06-22 19:48:47 -05001750 },
1751};
1752
1753struct caam_hash_alg {
1754 struct list_head entry;
Yuan Kang045e3672012-06-22 19:48:47 -05001755 int alg_type;
Yuan Kang045e3672012-06-22 19:48:47 -05001756 struct ahash_alg ahash_alg;
1757};
1758
1759static int caam_hash_cra_init(struct crypto_tfm *tfm)
1760{
1761 struct crypto_ahash *ahash = __crypto_ahash_cast(tfm);
1762 struct crypto_alg *base = tfm->__crt_alg;
1763 struct hash_alg_common *halg =
1764 container_of(base, struct hash_alg_common, base);
1765 struct ahash_alg *alg =
1766 container_of(halg, struct ahash_alg, halg);
1767 struct caam_hash_alg *caam_hash =
1768 container_of(alg, struct caam_hash_alg, ahash_alg);
1769 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
Yuan Kang045e3672012-06-22 19:48:47 -05001770 /* Sizes for MDHA running digests: MD5, SHA1, 224, 256, 384, 512 */
1771 static const u8 runninglen[] = { HASH_MSG_LEN + MD5_DIGEST_SIZE,
1772 HASH_MSG_LEN + SHA1_DIGEST_SIZE,
1773 HASH_MSG_LEN + 32,
1774 HASH_MSG_LEN + SHA256_DIGEST_SIZE,
1775 HASH_MSG_LEN + 64,
1776 HASH_MSG_LEN + SHA512_DIGEST_SIZE };
Horia Geantăbbf22342017-02-10 14:07:22 +02001777 dma_addr_t dma_addr;
Horia Geantă7e0880b2017-12-19 12:16:07 +02001778 struct caam_drv_private *priv;
Yuan Kang045e3672012-06-22 19:48:47 -05001779
1780 /*
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301781 * Get a Job ring from Job Ring driver to ensure in-order
Yuan Kang045e3672012-06-22 19:48:47 -05001782 * crypto request processing per tfm
1783 */
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301784 ctx->jrdev = caam_jr_alloc();
1785 if (IS_ERR(ctx->jrdev)) {
1786 pr_err("Job Ring Device allocation for transform failed\n");
1787 return PTR_ERR(ctx->jrdev);
1788 }
Horia Geantăbbf22342017-02-10 14:07:22 +02001789
Horia Geantă7e0880b2017-12-19 12:16:07 +02001790 priv = dev_get_drvdata(ctx->jrdev->parent);
Iuliana Prodan12b85672018-12-21 17:59:10 +02001791
1792 if (is_xcbc_aes(caam_hash->alg_type)) {
1793 ctx->dir = DMA_TO_DEVICE;
Horia Geantăe9b49132019-07-31 16:08:11 +03001794 ctx->key_dir = DMA_BIDIRECTIONAL;
Iuliana Prodan12b85672018-12-21 17:59:10 +02001795 ctx->adata.algtype = OP_TYPE_CLASS1_ALG | caam_hash->alg_type;
1796 ctx->ctx_len = 48;
Horia Geantăe9b49132019-07-31 16:08:11 +03001797 } else if (is_cmac_aes(caam_hash->alg_type)) {
1798 ctx->dir = DMA_TO_DEVICE;
1799 ctx->key_dir = DMA_NONE;
1800 ctx->adata.algtype = OP_TYPE_CLASS1_ALG | caam_hash->alg_type;
1801 ctx->ctx_len = 32;
1802 } else {
1803 if (priv->era >= 6) {
1804 ctx->dir = DMA_BIDIRECTIONAL;
1805 ctx->key_dir = alg->setkey ? DMA_TO_DEVICE : DMA_NONE;
1806 } else {
1807 ctx->dir = DMA_TO_DEVICE;
1808 ctx->key_dir = DMA_NONE;
1809 }
1810 ctx->adata.algtype = OP_TYPE_CLASS2_ALG | caam_hash->alg_type;
1811 ctx->ctx_len = runninglen[(ctx->adata.algtype &
1812 OP_ALG_ALGSEL_SUBMASK) >>
1813 OP_ALG_ALGSEL_SHIFT];
1814 }
Iuliana Prodan12b85672018-12-21 17:59:10 +02001815
Horia Geantăe9b49132019-07-31 16:08:11 +03001816 if (ctx->key_dir != DMA_NONE) {
Horia Geantăa2fb8642019-07-31 16:08:10 +03001817 ctx->adata.key_dma = dma_map_single_attrs(ctx->jrdev, ctx->key,
1818 ARRAY_SIZE(ctx->key),
Horia Geantăe9b49132019-07-31 16:08:11 +03001819 ctx->key_dir,
Horia Geantăa2fb8642019-07-31 16:08:10 +03001820 DMA_ATTR_SKIP_CPU_SYNC);
1821 if (dma_mapping_error(ctx->jrdev, ctx->adata.key_dma)) {
Iuliana Prodan12b85672018-12-21 17:59:10 +02001822 dev_err(ctx->jrdev, "unable to map key\n");
1823 caam_jr_free(ctx->jrdev);
1824 return -ENOMEM;
1825 }
Iuliana Prodan12b85672018-12-21 17:59:10 +02001826 }
Horia Geantă7e0880b2017-12-19 12:16:07 +02001827
Horia Geantăbbf22342017-02-10 14:07:22 +02001828 dma_addr = dma_map_single_attrs(ctx->jrdev, ctx->sh_desc_update,
Horia Geantă8e731ee2019-02-19 16:56:56 +02001829 offsetof(struct caam_hash_ctx, key),
Horia Geantă7e0880b2017-12-19 12:16:07 +02001830 ctx->dir, DMA_ATTR_SKIP_CPU_SYNC);
Horia Geantăbbf22342017-02-10 14:07:22 +02001831 if (dma_mapping_error(ctx->jrdev, dma_addr)) {
1832 dev_err(ctx->jrdev, "unable to map shared descriptors\n");
Iuliana Prodan12b85672018-12-21 17:59:10 +02001833
Horia Geantăe9b49132019-07-31 16:08:11 +03001834 if (ctx->key_dir != DMA_NONE)
Horia Geantăa2fb8642019-07-31 16:08:10 +03001835 dma_unmap_single_attrs(ctx->jrdev, ctx->adata.key_dma,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001836 ARRAY_SIZE(ctx->key),
Horia Geantăe9b49132019-07-31 16:08:11 +03001837 ctx->key_dir,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001838 DMA_ATTR_SKIP_CPU_SYNC);
1839
Horia Geantăbbf22342017-02-10 14:07:22 +02001840 caam_jr_free(ctx->jrdev);
1841 return -ENOMEM;
1842 }
1843
1844 ctx->sh_desc_update_dma = dma_addr;
1845 ctx->sh_desc_update_first_dma = dma_addr +
1846 offsetof(struct caam_hash_ctx,
1847 sh_desc_update_first);
1848 ctx->sh_desc_fin_dma = dma_addr + offsetof(struct caam_hash_ctx,
1849 sh_desc_fin);
1850 ctx->sh_desc_digest_dma = dma_addr + offsetof(struct caam_hash_ctx,
1851 sh_desc_digest);
1852
Yuan Kang045e3672012-06-22 19:48:47 -05001853 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1854 sizeof(struct caam_hash_state));
Iuliana Prodan9a2537d2018-12-21 17:59:09 +02001855
1856 /*
1857 * For keyed hash algorithms shared descriptors
1858 * will be created later in setkey() callback
1859 */
1860 return alg->setkey ? 0 : ahash_set_sh_desc(ahash);
Yuan Kang045e3672012-06-22 19:48:47 -05001861}
1862
1863static void caam_hash_cra_exit(struct crypto_tfm *tfm)
1864{
1865 struct caam_hash_ctx *ctx = crypto_tfm_ctx(tfm);
1866
Horia Geantăbbf22342017-02-10 14:07:22 +02001867 dma_unmap_single_attrs(ctx->jrdev, ctx->sh_desc_update_dma,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001868 offsetof(struct caam_hash_ctx, key),
Horia Geantă7e0880b2017-12-19 12:16:07 +02001869 ctx->dir, DMA_ATTR_SKIP_CPU_SYNC);
Horia Geantăe9b49132019-07-31 16:08:11 +03001870 if (ctx->key_dir != DMA_NONE)
Horia Geantăa2fb8642019-07-31 16:08:10 +03001871 dma_unmap_single_attrs(ctx->jrdev, ctx->adata.key_dma,
Horia Geantăe9b49132019-07-31 16:08:11 +03001872 ARRAY_SIZE(ctx->key), ctx->key_dir,
Iuliana Prodan12b85672018-12-21 17:59:10 +02001873 DMA_ATTR_SKIP_CPU_SYNC);
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301874 caam_jr_free(ctx->jrdev);
Yuan Kang045e3672012-06-22 19:48:47 -05001875}
1876
Horia Geantă1b46c902019-05-03 17:17:39 +03001877void caam_algapi_hash_exit(void)
Yuan Kang045e3672012-06-22 19:48:47 -05001878{
Yuan Kang045e3672012-06-22 19:48:47 -05001879 struct caam_hash_alg *t_alg, *n;
1880
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301881 if (!hash_list.next)
Yuan Kang045e3672012-06-22 19:48:47 -05001882 return;
1883
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301884 list_for_each_entry_safe(t_alg, n, &hash_list, entry) {
Yuan Kang045e3672012-06-22 19:48:47 -05001885 crypto_unregister_ahash(&t_alg->ahash_alg);
1886 list_del(&t_alg->entry);
1887 kfree(t_alg);
1888 }
1889}
1890
1891static struct caam_hash_alg *
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301892caam_hash_alloc(struct caam_hash_template *template,
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001893 bool keyed)
Yuan Kang045e3672012-06-22 19:48:47 -05001894{
1895 struct caam_hash_alg *t_alg;
1896 struct ahash_alg *halg;
1897 struct crypto_alg *alg;
1898
Fabio Estevam9c4f9732015-08-21 13:52:00 -03001899 t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
Yuan Kang045e3672012-06-22 19:48:47 -05001900 if (!t_alg) {
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301901 pr_err("failed to allocate t_alg\n");
Yuan Kang045e3672012-06-22 19:48:47 -05001902 return ERR_PTR(-ENOMEM);
1903 }
1904
1905 t_alg->ahash_alg = template->template_ahash;
1906 halg = &t_alg->ahash_alg;
1907 alg = &halg->halg.base;
1908
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001909 if (keyed) {
1910 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1911 template->hmac_name);
1912 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1913 template->hmac_driver_name);
1914 } else {
1915 snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s",
1916 template->name);
1917 snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
1918 template->driver_name);
Russell Kinga0118c82016-08-09 08:27:17 +01001919 t_alg->ahash_alg.setkey = NULL;
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001920 }
Yuan Kang045e3672012-06-22 19:48:47 -05001921 alg->cra_module = THIS_MODULE;
1922 alg->cra_init = caam_hash_cra_init;
1923 alg->cra_exit = caam_hash_cra_exit;
1924 alg->cra_ctxsize = sizeof(struct caam_hash_ctx);
1925 alg->cra_priority = CAAM_CRA_PRIORITY;
1926 alg->cra_blocksize = template->blocksize;
1927 alg->cra_alignmask = 0;
Eric Biggers6a38f6222018-06-30 15:16:12 -07001928 alg->cra_flags = CRYPTO_ALG_ASYNC;
Yuan Kang045e3672012-06-22 19:48:47 -05001929
1930 t_alg->alg_type = template->alg_type;
Yuan Kang045e3672012-06-22 19:48:47 -05001931
1932 return t_alg;
1933}
1934
Horia Geantă1b46c902019-05-03 17:17:39 +03001935int caam_algapi_hash_init(struct device *ctrldev)
Yuan Kang045e3672012-06-22 19:48:47 -05001936{
Yuan Kang045e3672012-06-22 19:48:47 -05001937 int i = 0, err = 0;
Horia Geantă1b46c902019-05-03 17:17:39 +03001938 struct caam_drv_private *priv = dev_get_drvdata(ctrldev);
Victoria Milhoanbf834902015-08-05 11:28:48 -07001939 unsigned int md_limit = SHA512_DIGEST_SIZE;
Horia Geantăd239b102018-11-08 15:36:27 +02001940 u32 md_inst, md_vid;
Yuan Kang045e3672012-06-22 19:48:47 -05001941
Victoria Milhoanbf834902015-08-05 11:28:48 -07001942 /*
1943 * Register crypto algorithms the device supports. First, identify
1944 * presence and attributes of MD block.
1945 */
Horia Geantăd239b102018-11-08 15:36:27 +02001946 if (priv->era < 10) {
1947 md_vid = (rd_reg32(&priv->ctrl->perfmon.cha_id_ls) &
1948 CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
1949 md_inst = (rd_reg32(&priv->ctrl->perfmon.cha_num_ls) &
1950 CHA_ID_LS_MD_MASK) >> CHA_ID_LS_MD_SHIFT;
1951 } else {
1952 u32 mdha = rd_reg32(&priv->ctrl->vreg.mdha);
1953
1954 md_vid = (mdha & CHA_VER_VID_MASK) >> CHA_VER_VID_SHIFT;
1955 md_inst = mdha & CHA_VER_NUM_MASK;
1956 }
Victoria Milhoanbf834902015-08-05 11:28:48 -07001957
1958 /*
1959 * Skip registration of any hashing algorithms if MD block
1960 * is not present.
1961 */
Horia Geantă1b46c902019-05-03 17:17:39 +03001962 if (!md_inst)
Iuliana Prodan0435d472019-07-31 16:08:15 +03001963 return 0;
Victoria Milhoanbf834902015-08-05 11:28:48 -07001964
1965 /* Limit digest size based on LP256 */
Horia Geantăd239b102018-11-08 15:36:27 +02001966 if (md_vid == CHA_VER_VID_MD_LP256)
Victoria Milhoanbf834902015-08-05 11:28:48 -07001967 md_limit = SHA256_DIGEST_SIZE;
1968
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301969 INIT_LIST_HEAD(&hash_list);
Yuan Kang045e3672012-06-22 19:48:47 -05001970
1971 /* register crypto algorithms the device supports */
1972 for (i = 0; i < ARRAY_SIZE(driver_hash); i++) {
Yuan Kang045e3672012-06-22 19:48:47 -05001973 struct caam_hash_alg *t_alg;
Victoria Milhoanbf834902015-08-05 11:28:48 -07001974 struct caam_hash_template *alg = driver_hash + i;
1975
1976 /* If MD size is not supported by device, skip registration */
Iuliana Prodan12b85672018-12-21 17:59:10 +02001977 if (is_mdha(alg->alg_type) &&
1978 alg->template_ahash.halg.digestsize > md_limit)
Victoria Milhoanbf834902015-08-05 11:28:48 -07001979 continue;
Yuan Kang045e3672012-06-22 19:48:47 -05001980
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001981 /* register hmac version */
Victoria Milhoanbf834902015-08-05 11:28:48 -07001982 t_alg = caam_hash_alloc(alg, true);
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001983 if (IS_ERR(t_alg)) {
1984 err = PTR_ERR(t_alg);
Iuliana Prodan0f103b32018-12-21 17:59:08 +02001985 pr_warn("%s alg allocation failed\n",
1986 alg->hmac_driver_name);
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001987 continue;
1988 }
1989
1990 err = crypto_register_ahash(&t_alg->ahash_alg);
1991 if (err) {
Russell King6ea30f02015-10-18 17:51:10 +01001992 pr_warn("%s alg registration failed: %d\n",
1993 t_alg->ahash_alg.halg.base.cra_driver_name,
1994 err);
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001995 kfree(t_alg);
1996 } else
Ruchika Guptacfc6f112013-10-25 12:01:03 +05301997 list_add_tail(&t_alg->entry, &hash_list);
Yuan Kangb0e09ba2012-06-22 19:48:48 -05001998
Iuliana Prodan12b85672018-12-21 17:59:10 +02001999 if ((alg->alg_type & OP_ALG_ALGSEL_MASK) == OP_ALG_ALGSEL_AES)
2000 continue;
2001
Yuan Kangb0e09ba2012-06-22 19:48:48 -05002002 /* register unkeyed version */
Victoria Milhoanbf834902015-08-05 11:28:48 -07002003 t_alg = caam_hash_alloc(alg, false);
Yuan Kang045e3672012-06-22 19:48:47 -05002004 if (IS_ERR(t_alg)) {
2005 err = PTR_ERR(t_alg);
Victoria Milhoanbf834902015-08-05 11:28:48 -07002006 pr_warn("%s alg allocation failed\n", alg->driver_name);
Yuan Kang045e3672012-06-22 19:48:47 -05002007 continue;
2008 }
2009
2010 err = crypto_register_ahash(&t_alg->ahash_alg);
2011 if (err) {
Russell King6ea30f02015-10-18 17:51:10 +01002012 pr_warn("%s alg registration failed: %d\n",
2013 t_alg->ahash_alg.halg.base.cra_driver_name,
2014 err);
Yuan Kang045e3672012-06-22 19:48:47 -05002015 kfree(t_alg);
2016 } else
Ruchika Guptacfc6f112013-10-25 12:01:03 +05302017 list_add_tail(&t_alg->entry, &hash_list);
Yuan Kang045e3672012-06-22 19:48:47 -05002018 }
2019
Yuan Kang045e3672012-06-22 19:48:47 -05002020 return err;
2021}