1 // SPDX-License-Identifier: GPL-2.0
3 * K3 SA2UL crypto accelerator driver
5 * Copyright (C) 2018-2020 Texas Instruments Incorporated - http://www.ti.com
11 #include <linux/clk.h>
12 #include <linux/dma-mapping.h>
13 #include <linux/dmaengine.h>
14 #include <linux/dmapool.h>
15 #include <linux/kernel.h>
16 #include <linux/module.h>
17 #include <linux/of_device.h>
18 #include <linux/platform_device.h>
19 #include <linux/pm_runtime.h>
21 #include <crypto/aes.h>
22 #include <crypto/authenc.h>
23 #include <crypto/des.h>
24 #include <crypto/internal/aead.h>
25 #include <crypto/internal/hash.h>
26 #include <crypto/internal/skcipher.h>
27 #include <crypto/scatterwalk.h>
28 #include <crypto/sha1.h>
29 #include <crypto/sha2.h>
33 /* Byte offset for key in encryption security context */
34 #define SC_ENC_KEY_OFFSET (1 + 27 + 4)
35 /* Byte offset for Aux-1 in encryption security context */
36 #define SC_ENC_AUX1_OFFSET (1 + 27 + 4 + 32)
38 #define SA_CMDL_UPD_ENC 0x0001
39 #define SA_CMDL_UPD_AUTH 0x0002
40 #define SA_CMDL_UPD_ENC_IV 0x0004
41 #define SA_CMDL_UPD_AUTH_IV 0x0008
42 #define SA_CMDL_UPD_AUX_KEY 0x0010
44 #define SA_AUTH_SUBKEY_LEN 16
45 #define SA_CMDL_PAYLOAD_LENGTH_MASK 0xFFFF
46 #define SA_CMDL_SOP_BYPASS_LEN_MASK 0xFF000000
48 #define MODE_CONTROL_BYTES 27
49 #define SA_HASH_PROCESSING 0
50 #define SA_CRYPTO_PROCESSING 0
51 #define SA_UPLOAD_HASH_TO_TLR BIT(6)
53 #define SA_SW0_FLAGS_MASK 0xF0000
54 #define SA_SW0_CMDL_INFO_MASK 0x1F00000
55 #define SA_SW0_CMDL_PRESENT BIT(4)
56 #define SA_SW0_ENG_ID_MASK 0x3E000000
57 #define SA_SW0_DEST_INFO_PRESENT BIT(30)
58 #define SA_SW2_EGRESS_LENGTH 0xFF000000
59 #define SA_BASIC_HASH 0x10
61 #define SHA256_DIGEST_WORDS 8
62 /* Make 32-bit word from 4 bytes */
63 #define SA_MK_U32(b0, b1, b2, b3) (((b0) << 24) | ((b1) << 16) | \
66 /* size of SCCTL structure in bytes */
67 #define SA_SCCTL_SZ 16
69 /* Max Authentication tag size */
70 #define SA_MAX_AUTH_TAG_SZ 64
75 static struct device *sa_k3_dev;
78 * struct sa_cmdl_cfg - Command label configuration descriptor
79 * @aalg: authentication algorithm ID
80 * @enc_eng_id: Encryption Engine ID supported by the SA hardware
81 * @auth_eng_id: Authentication Engine ID
82 * @iv_size: Initialization Vector size
83 * @akey: Authentication key
84 * @akey_len: Authentication key length
85 * @enc: True, if this is an encode request
98 * struct algo_data - Crypto algorithm specific data
99 * @enc_eng: Encryption engine info structure
100 * @auth_eng: Authentication engine info structure
101 * @auth_ctrl: Authentication control word
102 * @hash_size: Size of digest
103 * @iv_idx: iv index in psdata
104 * @iv_out_size: iv out size
105 * @ealg_id: Encryption Algorithm ID
106 * @aalg_id: Authentication algorithm ID
107 * @mci_enc: Mode Control Instruction for Encryption algorithm
108 * @mci_dec: Mode Control Instruction for Decryption
109 * @inv_key: Whether the encryption algorithm demands key inversion
110 * @ctx: Pointer to the algorithm context
111 * @keyed_mac: Whether the authentication algorithm has key
112 * @prep_iopad: Function pointer to generate intermediate ipad/opad
115 struct sa_eng_info enc_eng;
116 struct sa_eng_info auth_eng;
126 struct sa_tfm_ctx *ctx;
128 void (*prep_iopad)(struct algo_data *algo, const u8 *key,
129 u16 key_sz, __be32 *ipad, __be32 *opad);
133 * struct sa_alg_tmpl: A generic template encompassing crypto/aead algorithms
134 * @type: Type of the crypto algorithm.
135 * @alg: Union of crypto algorithm definitions.
136 * @registered: Flag indicating if the crypto algorithm is already registered
139 u32 type; /* CRYPTO_ALG_TYPE from <linux/crypto.h> */
141 struct skcipher_alg skcipher;
142 struct ahash_alg ahash;
143 struct aead_alg aead;
149 * struct sa_mapped_sg: scatterlist information for tx and rx
150 * @mapped: Set to true if the @sgt is mapped
151 * @dir: mapping direction used for @sgt
152 * @split_sg: Set if the sg is split and needs to be freed up
153 * @static_sg: Static scatterlist entry for overriding data
154 * @sgt: scatterlist table for DMA API use
156 struct sa_mapped_sg {
158 enum dma_data_direction dir;
159 struct scatterlist static_sg;
160 struct scatterlist *split_sg;
164 * struct sa_rx_data: RX Packet miscellaneous data place holder
165 * @req: crypto request data pointer
166 * @ddev: pointer to the DMA device
167 * @tx_in: dma_async_tx_descriptor pointer for rx channel
168 * @mapped_sg: Information on tx (0) and rx (1) scatterlist DMA mapping
169 * @enc: Flag indicating either encryption or decryption
170 * @enc_iv_size: Initialisation vector size
171 * @iv_idx: Initialisation vector index
176 struct dma_async_tx_descriptor *tx_in;
177 struct sa_mapped_sg mapped_sg[2];
184 * struct sa_req: SA request definition
185 * @dev: device for the request
186 * @size: total data to the xmitted via DMA
187 * @enc_offset: offset of cipher data
188 * @enc_size: data to be passed to cipher engine
190 * @auth_offset: offset of the authentication data
191 * @auth_size: size of the authentication data
192 * @auth_iv: authentication IV
193 * @type: algorithm type for the request
194 * @cmdl: command label pointer
195 * @base: pointer to the base request
196 * @ctx: pointer to the algorithm context data
197 * @enc: true if this is an encode request
199 * @dst: destination data
200 * @callback: DMA callback for the request
201 * @mdata_size: metadata size passed to DMA
214 struct crypto_async_request *base;
215 struct sa_tfm_ctx *ctx;
217 struct scatterlist *src;
218 struct scatterlist *dst;
219 dma_async_tx_callback callback;
224 * Mode Control Instructions for various Key lengths 128, 192, 256
225 * For CBC (Cipher Block Chaining) mode for encryption
227 static u8 mci_cbc_enc_array[3][MODE_CONTROL_BYTES] = {
228 { 0x61, 0x00, 0x00, 0x18, 0x88, 0x0a, 0xaa, 0x4b, 0x7e, 0x00,
229 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
230 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
231 { 0x61, 0x00, 0x00, 0x18, 0x88, 0x4a, 0xaa, 0x4b, 0x7e, 0x00,
232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
233 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
234 { 0x61, 0x00, 0x00, 0x18, 0x88, 0x8a, 0xaa, 0x4b, 0x7e, 0x00,
235 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
236 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
240 * Mode Control Instructions for various Key lengths 128, 192, 256
241 * For CBC (Cipher Block Chaining) mode for decryption
243 static u8 mci_cbc_dec_array[3][MODE_CONTROL_BYTES] = {
244 { 0x71, 0x00, 0x00, 0x80, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
245 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
246 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
247 { 0x71, 0x00, 0x00, 0x84, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
248 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
249 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
250 { 0x71, 0x00, 0x00, 0x88, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
251 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
252 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
256 * Mode Control Instructions for various Key lengths 128, 192, 256
257 * For CBC (Cipher Block Chaining) mode for encryption
259 static u8 mci_cbc_enc_no_iv_array[3][MODE_CONTROL_BYTES] = {
260 { 0x21, 0x00, 0x00, 0x18, 0x88, 0x0a, 0xaa, 0x4b, 0x7e, 0x00,
261 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
262 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
263 { 0x21, 0x00, 0x00, 0x18, 0x88, 0x4a, 0xaa, 0x4b, 0x7e, 0x00,
264 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
265 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
266 { 0x21, 0x00, 0x00, 0x18, 0x88, 0x8a, 0xaa, 0x4b, 0x7e, 0x00,
267 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
268 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
272 * Mode Control Instructions for various Key lengths 128, 192, 256
273 * For CBC (Cipher Block Chaining) mode for decryption
275 static u8 mci_cbc_dec_no_iv_array[3][MODE_CONTROL_BYTES] = {
276 { 0x31, 0x00, 0x00, 0x80, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
277 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
278 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
279 { 0x31, 0x00, 0x00, 0x84, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
280 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
281 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
282 { 0x31, 0x00, 0x00, 0x88, 0x8a, 0xca, 0x98, 0xf4, 0x40, 0xc0,
283 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
284 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
288 * Mode Control Instructions for various Key lengths 128, 192, 256
289 * For ECB (Electronic Code Book) mode for encryption
291 static u8 mci_ecb_enc_array[3][27] = {
292 { 0x21, 0x00, 0x00, 0x80, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
293 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
294 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
295 { 0x21, 0x00, 0x00, 0x84, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
296 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
297 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
298 { 0x21, 0x00, 0x00, 0x88, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
299 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
300 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
304 * Mode Control Instructions for various Key lengths 128, 192, 256
305 * For ECB (Electronic Code Book) mode for decryption
307 static u8 mci_ecb_dec_array[3][27] = {
308 { 0x31, 0x00, 0x00, 0x80, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
309 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
310 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
311 { 0x31, 0x00, 0x00, 0x84, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
312 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
313 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
314 { 0x31, 0x00, 0x00, 0x88, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00,
315 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
316 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
320 * Mode Control Instructions for DES algorithm
321 * For CBC (Cipher Block Chaining) mode and ECB mode
322 * encryption and for decryption respectively
324 static u8 mci_cbc_3des_enc_array[MODE_CONTROL_BYTES] = {
325 0x60, 0x00, 0x00, 0x18, 0x88, 0x52, 0xaa, 0x4b, 0x7e, 0x00, 0x00, 0x00,
326 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
330 static u8 mci_cbc_3des_dec_array[MODE_CONTROL_BYTES] = {
331 0x70, 0x00, 0x00, 0x85, 0x0a, 0xca, 0x98, 0xf4, 0x40, 0xc0, 0x00, 0x00,
332 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
336 static u8 mci_ecb_3des_enc_array[MODE_CONTROL_BYTES] = {
337 0x20, 0x00, 0x00, 0x85, 0x0a, 0x04, 0xb7, 0x90, 0x00, 0x00, 0x00, 0x00,
338 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
342 static u8 mci_ecb_3des_dec_array[MODE_CONTROL_BYTES] = {
343 0x30, 0x00, 0x00, 0x85, 0x0a, 0x04, 0xb7, 0x90, 0x00, 0x00, 0x00, 0x00,
344 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
349 * Perform 16 byte or 128 bit swizzling
350 * The SA2UL Expects the security context to
351 * be in little Endian and the bus width is 128 bits or 16 bytes
352 * Hence swap 16 bytes at a time from higher to lower address
354 static void sa_swiz_128(u8 *in, u16 len)
359 for (i = 0; i < len; i += 16) {
360 memcpy(data, &in[i], 16);
361 for (j = 0; j < 16; j++)
362 in[i + j] = data[15 - j];
366 /* Prepare the ipad and opad from key as per SHA algorithm step 1*/
367 static void prepare_kipad(u8 *k_ipad, const u8 *key, u16 key_sz)
371 for (i = 0; i < key_sz; i++)
372 k_ipad[i] = key[i] ^ 0x36;
374 /* Instead of XOR with 0 */
375 for (; i < SHA1_BLOCK_SIZE; i++)
379 static void prepare_kopad(u8 *k_opad, const u8 *key, u16 key_sz)
383 for (i = 0; i < key_sz; i++)
384 k_opad[i] = key[i] ^ 0x5c;
386 /* Instead of XOR with 0 */
387 for (; i < SHA1_BLOCK_SIZE; i++)
391 static void sa_export_shash(void *state, struct shash_desc *hash,
392 int digest_size, __be32 *out)
394 struct sha1_state *sha1;
395 struct sha256_state *sha256;
398 switch (digest_size) {
399 case SHA1_DIGEST_SIZE:
401 result = sha1->state;
403 case SHA256_DIGEST_SIZE:
405 result = sha256->state;
408 dev_err(sa_k3_dev, "%s: bad digest_size=%d\n", __func__,
413 crypto_shash_export(hash, state);
415 cpu_to_be32_array(out, result, digest_size / 4);
418 static void sa_prepare_iopads(struct algo_data *data, const u8 *key,
419 u16 key_sz, __be32 *ipad, __be32 *opad)
421 SHASH_DESC_ON_STACK(shash, data->ctx->shash);
422 int block_size = crypto_shash_blocksize(data->ctx->shash);
423 int digest_size = crypto_shash_digestsize(data->ctx->shash);
425 struct sha1_state sha1;
426 struct sha256_state sha256;
427 u8 k_pad[SHA1_BLOCK_SIZE];
430 shash->tfm = data->ctx->shash;
432 prepare_kipad(sha.k_pad, key, key_sz);
434 crypto_shash_init(shash);
435 crypto_shash_update(shash, sha.k_pad, block_size);
436 sa_export_shash(&sha, shash, digest_size, ipad);
438 prepare_kopad(sha.k_pad, key, key_sz);
440 crypto_shash_init(shash);
441 crypto_shash_update(shash, sha.k_pad, block_size);
443 sa_export_shash(&sha, shash, digest_size, opad);
445 memzero_explicit(&sha, sizeof(sha));
448 /* Derive the inverse key used in AES-CBC decryption operation */
449 static inline int sa_aes_inv_key(u8 *inv_key, const u8 *key, u16 key_sz)
451 struct crypto_aes_ctx ctx;
454 if (aes_expandkey(&ctx, key, key_sz)) {
455 dev_err(sa_k3_dev, "%s: bad key len(%d)\n", __func__, key_sz);
459 /* work around to get the right inverse for AES_KEYSIZE_192 size keys */
460 if (key_sz == AES_KEYSIZE_192) {
461 ctx.key_enc[52] = ctx.key_enc[51] ^ ctx.key_enc[46];
462 ctx.key_enc[53] = ctx.key_enc[52] ^ ctx.key_enc[47];
465 /* Based crypto_aes_expand_key logic */
467 case AES_KEYSIZE_128:
468 case AES_KEYSIZE_192:
469 key_pos = key_sz + 24;
472 case AES_KEYSIZE_256:
473 key_pos = key_sz + 24 - 4;
477 dev_err(sa_k3_dev, "%s: bad key len(%d)\n", __func__, key_sz);
481 memcpy(inv_key, &ctx.key_enc[key_pos], key_sz);
485 /* Set Security context for the encryption engine */
486 static int sa_set_sc_enc(struct algo_data *ad, const u8 *key, u16 key_sz,
489 const u8 *mci = NULL;
491 /* Set Encryption mode selector to crypto processing */
492 sc_buf[0] = SA_CRYPTO_PROCESSING;
498 /* Set the mode control instructions in security context */
500 memcpy(&sc_buf[1], mci, MODE_CONTROL_BYTES);
502 /* For AES-CBC decryption get the inverse key */
503 if (ad->inv_key && !enc) {
504 if (sa_aes_inv_key(&sc_buf[SC_ENC_KEY_OFFSET], key, key_sz))
506 /* For all other cases: key is used */
508 memcpy(&sc_buf[SC_ENC_KEY_OFFSET], key, key_sz);
514 /* Set Security context for the authentication engine */
515 static void sa_set_sc_auth(struct algo_data *ad, const u8 *key, u16 key_sz,
518 __be32 *ipad = (void *)(sc_buf + 32);
519 __be32 *opad = (void *)(sc_buf + 64);
521 /* Set Authentication mode selector to hash processing */
522 sc_buf[0] = SA_HASH_PROCESSING;
523 /* Auth SW ctrl word: bit[6]=1 (upload computed hash to TLR section) */
524 sc_buf[1] = SA_UPLOAD_HASH_TO_TLR;
525 sc_buf[1] |= ad->auth_ctrl;
527 /* Copy the keys or ipad/opad */
529 ad->prep_iopad(ad, key, key_sz, ipad, opad);
532 sc_buf[1] |= SA_BASIC_HASH;
536 static inline void sa_copy_iv(__be32 *out, const u8 *iv, bool size16)
540 for (j = 0; j < ((size16) ? 4 : 2); j++) {
541 *out = cpu_to_be32(*((u32 *)iv));
547 /* Format general command label */
548 static int sa_format_cmdl_gen(struct sa_cmdl_cfg *cfg, u8 *cmdl,
549 struct sa_cmdl_upd_info *upd_info)
551 u8 enc_offset = 0, auth_offset = 0, total = 0;
552 u8 enc_next_eng = SA_ENG_ID_OUTPORT2;
553 u8 auth_next_eng = SA_ENG_ID_OUTPORT2;
554 u32 *word_ptr = (u32 *)cmdl;
557 /* Clear the command label */
558 memzero_explicit(cmdl, (SA_MAX_CMDL_WORDS * sizeof(u32)));
560 /* Iniialize the command update structure */
561 memzero_explicit(upd_info, sizeof(*upd_info));
563 if (cfg->enc_eng_id && cfg->auth_eng_id) {
565 auth_offset = SA_CMDL_HEADER_SIZE_BYTES;
566 enc_next_eng = cfg->auth_eng_id;
569 auth_offset += cfg->iv_size;
571 enc_offset = SA_CMDL_HEADER_SIZE_BYTES;
572 auth_next_eng = cfg->enc_eng_id;
576 if (cfg->enc_eng_id) {
577 upd_info->flags |= SA_CMDL_UPD_ENC;
578 upd_info->enc_size.index = enc_offset >> 2;
579 upd_info->enc_offset.index = upd_info->enc_size.index + 1;
580 /* Encryption command label */
581 cmdl[enc_offset + SA_CMDL_OFFSET_NESC] = enc_next_eng;
583 /* Encryption modes requiring IV */
585 upd_info->flags |= SA_CMDL_UPD_ENC_IV;
586 upd_info->enc_iv.index =
587 (enc_offset + SA_CMDL_HEADER_SIZE_BYTES) >> 2;
588 upd_info->enc_iv.size = cfg->iv_size;
590 cmdl[enc_offset + SA_CMDL_OFFSET_LABEL_LEN] =
591 SA_CMDL_HEADER_SIZE_BYTES + cfg->iv_size;
593 cmdl[enc_offset + SA_CMDL_OFFSET_OPTION_CTRL1] =
594 (SA_CTX_ENC_AUX2_OFFSET | (cfg->iv_size >> 3));
595 total += SA_CMDL_HEADER_SIZE_BYTES + cfg->iv_size;
597 cmdl[enc_offset + SA_CMDL_OFFSET_LABEL_LEN] =
598 SA_CMDL_HEADER_SIZE_BYTES;
599 total += SA_CMDL_HEADER_SIZE_BYTES;
603 if (cfg->auth_eng_id) {
604 upd_info->flags |= SA_CMDL_UPD_AUTH;
605 upd_info->auth_size.index = auth_offset >> 2;
606 upd_info->auth_offset.index = upd_info->auth_size.index + 1;
607 cmdl[auth_offset + SA_CMDL_OFFSET_NESC] = auth_next_eng;
608 cmdl[auth_offset + SA_CMDL_OFFSET_LABEL_LEN] =
609 SA_CMDL_HEADER_SIZE_BYTES;
610 total += SA_CMDL_HEADER_SIZE_BYTES;
613 total = roundup(total, 8);
615 for (i = 0; i < total / 4; i++)
616 word_ptr[i] = swab32(word_ptr[i]);
621 /* Update Command label */
622 static inline void sa_update_cmdl(struct sa_req *req, u32 *cmdl,
623 struct sa_cmdl_upd_info *upd_info)
627 if (likely(upd_info->flags & SA_CMDL_UPD_ENC)) {
628 cmdl[upd_info->enc_size.index] &= ~SA_CMDL_PAYLOAD_LENGTH_MASK;
629 cmdl[upd_info->enc_size.index] |= req->enc_size;
630 cmdl[upd_info->enc_offset.index] &=
631 ~SA_CMDL_SOP_BYPASS_LEN_MASK;
632 cmdl[upd_info->enc_offset.index] |=
633 ((u32)req->enc_offset <<
634 __ffs(SA_CMDL_SOP_BYPASS_LEN_MASK));
636 if (likely(upd_info->flags & SA_CMDL_UPD_ENC_IV)) {
637 __be32 *data = (__be32 *)&cmdl[upd_info->enc_iv.index];
638 u32 *enc_iv = (u32 *)req->enc_iv;
640 for (j = 0; i < upd_info->enc_iv.size; i += 4, j++) {
641 data[j] = cpu_to_be32(*enc_iv);
647 if (likely(upd_info->flags & SA_CMDL_UPD_AUTH)) {
648 cmdl[upd_info->auth_size.index] &= ~SA_CMDL_PAYLOAD_LENGTH_MASK;
649 cmdl[upd_info->auth_size.index] |= req->auth_size;
650 cmdl[upd_info->auth_offset.index] &=
651 ~SA_CMDL_SOP_BYPASS_LEN_MASK;
652 cmdl[upd_info->auth_offset.index] |=
653 ((u32)req->auth_offset <<
654 __ffs(SA_CMDL_SOP_BYPASS_LEN_MASK));
655 if (upd_info->flags & SA_CMDL_UPD_AUTH_IV) {
656 sa_copy_iv((void *)&cmdl[upd_info->auth_iv.index],
658 (upd_info->auth_iv.size > 8));
660 if (upd_info->flags & SA_CMDL_UPD_AUX_KEY) {
661 int offset = (req->auth_size & 0xF) ? 4 : 0;
663 memcpy(&cmdl[upd_info->aux_key_info.index],
664 &upd_info->aux_key[offset], 16);
669 /* Format SWINFO words to be sent to SA */
671 void sa_set_swinfo(u8 eng_id, u16 sc_id, dma_addr_t sc_phys,
672 u8 cmdl_present, u8 cmdl_offset, u8 flags,
673 u8 hash_size, u32 *swinfo)
676 swinfo[0] |= (flags << __ffs(SA_SW0_FLAGS_MASK));
677 if (likely(cmdl_present))
678 swinfo[0] |= ((cmdl_offset | SA_SW0_CMDL_PRESENT) <<
679 __ffs(SA_SW0_CMDL_INFO_MASK));
680 swinfo[0] |= (eng_id << __ffs(SA_SW0_ENG_ID_MASK));
682 swinfo[0] |= SA_SW0_DEST_INFO_PRESENT;
683 swinfo[1] = (u32)(sc_phys & 0xFFFFFFFFULL);
684 swinfo[2] = (u32)((sc_phys & 0xFFFFFFFF00000000ULL) >> 32);
685 swinfo[2] |= (hash_size << __ffs(SA_SW2_EGRESS_LENGTH));
688 /* Dump the security context */
689 static void sa_dump_sc(u8 *buf, dma_addr_t dma_addr)
692 dev_info(sa_k3_dev, "Security context dump:: 0x%pad\n", &dma_addr);
693 print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET,
694 16, 1, buf, SA_CTX_MAX_SZ, false);
699 int sa_init_sc(struct sa_ctx_info *ctx, const u8 *enc_key,
700 u16 enc_key_sz, const u8 *auth_key, u16 auth_key_sz,
701 struct algo_data *ad, u8 enc, u32 *swinfo)
703 int enc_sc_offset = 0;
704 int auth_sc_offset = 0;
705 u8 *sc_buf = ctx->sc;
706 u16 sc_id = ctx->sc_id;
709 memzero_explicit(sc_buf, SA_CTX_MAX_SZ);
711 if (ad->auth_eng.eng_id) {
713 first_engine = ad->enc_eng.eng_id;
715 first_engine = ad->auth_eng.eng_id;
717 enc_sc_offset = SA_CTX_PHP_PE_CTX_SZ;
718 auth_sc_offset = enc_sc_offset + ad->enc_eng.sc_size;
719 sc_buf[1] = SA_SCCTL_FE_AUTH_ENC;
722 ad->hash_size = roundup(ad->hash_size, 8);
724 } else if (ad->enc_eng.eng_id && !ad->auth_eng.eng_id) {
725 enc_sc_offset = SA_CTX_PHP_PE_CTX_SZ;
726 first_engine = ad->enc_eng.eng_id;
727 sc_buf[1] = SA_SCCTL_FE_ENC;
728 ad->hash_size = ad->iv_out_size;
731 /* SCCTL Owner info: 0=host, 1=CP_ACE */
732 sc_buf[SA_CTX_SCCTL_OWNER_OFFSET] = 0;
733 memcpy(&sc_buf[2], &sc_id, 2);
739 /* Prepare context for encryption engine */
740 if (ad->enc_eng.sc_size) {
741 if (sa_set_sc_enc(ad, enc_key, enc_key_sz, enc,
742 &sc_buf[enc_sc_offset]))
746 /* Prepare context for authentication engine */
747 if (ad->auth_eng.sc_size)
748 sa_set_sc_auth(ad, auth_key, auth_key_sz,
749 &sc_buf[auth_sc_offset]);
751 /* Set the ownership of context to CP_ACE */
752 sc_buf[SA_CTX_SCCTL_OWNER_OFFSET] = 0x80;
754 /* swizzle the security context */
755 sa_swiz_128(sc_buf, SA_CTX_MAX_SZ);
757 sa_set_swinfo(first_engine, ctx->sc_id, ctx->sc_phys, 1, 0,
758 SA_SW_INFO_FLAG_EVICT, ad->hash_size, swinfo);
760 sa_dump_sc(sc_buf, ctx->sc_phys);
765 /* Free the per direction context memory */
766 static void sa_free_ctx_info(struct sa_ctx_info *ctx,
767 struct sa_crypto_data *data)
771 bn = ctx->sc_id - data->sc_id_start;
772 spin_lock(&data->scid_lock);
773 __clear_bit(bn, data->ctx_bm);
775 spin_unlock(&data->scid_lock);
778 dma_pool_free(data->sc_pool, ctx->sc, ctx->sc_phys);
783 static int sa_init_ctx_info(struct sa_ctx_info *ctx,
784 struct sa_crypto_data *data)
789 spin_lock(&data->scid_lock);
790 bn = find_first_zero_bit(data->ctx_bm, SA_MAX_NUM_CTX);
791 __set_bit(bn, data->ctx_bm);
793 spin_unlock(&data->scid_lock);
795 ctx->sc_id = (u16)(data->sc_id_start + bn);
797 ctx->sc = dma_pool_alloc(data->sc_pool, GFP_KERNEL, &ctx->sc_phys);
799 dev_err(&data->pdev->dev, "Failed to allocate SC memory\n");
807 spin_lock(&data->scid_lock);
808 __clear_bit(bn, data->ctx_bm);
810 spin_unlock(&data->scid_lock);
815 static void sa_cipher_cra_exit(struct crypto_skcipher *tfm)
817 struct sa_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
818 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
820 dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
821 __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
822 ctx->dec.sc_id, &ctx->dec.sc_phys);
824 sa_free_ctx_info(&ctx->enc, data);
825 sa_free_ctx_info(&ctx->dec, data);
827 crypto_free_skcipher(ctx->fallback.skcipher);
830 static int sa_cipher_cra_init(struct crypto_skcipher *tfm)
832 struct sa_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
833 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
834 const char *name = crypto_tfm_alg_name(&tfm->base);
835 struct crypto_skcipher *child;
838 memzero_explicit(ctx, sizeof(*ctx));
839 ctx->dev_data = data;
841 ret = sa_init_ctx_info(&ctx->enc, data);
844 ret = sa_init_ctx_info(&ctx->dec, data);
846 sa_free_ctx_info(&ctx->enc, data);
850 child = crypto_alloc_skcipher(name, 0, CRYPTO_ALG_NEED_FALLBACK);
853 dev_err(sa_k3_dev, "Error allocating fallback algo %s\n", name);
854 return PTR_ERR(child);
857 ctx->fallback.skcipher = child;
858 crypto_skcipher_set_reqsize(tfm, crypto_skcipher_reqsize(child) +
859 sizeof(struct skcipher_request));
861 dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
862 __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
863 ctx->dec.sc_id, &ctx->dec.sc_phys);
867 static int sa_cipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
868 unsigned int keylen, struct algo_data *ad)
870 struct sa_tfm_ctx *ctx = crypto_skcipher_ctx(tfm);
871 struct crypto_skcipher *child = ctx->fallback.skcipher;
873 struct sa_cmdl_cfg cfg;
876 if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 &&
877 keylen != AES_KEYSIZE_256)
880 ad->enc_eng.eng_id = SA_ENG_ID_EM1;
881 ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ;
883 memzero_explicit(&cfg, sizeof(cfg));
884 cfg.enc_eng_id = ad->enc_eng.eng_id;
885 cfg.iv_size = crypto_skcipher_ivsize(tfm);
887 crypto_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);
888 crypto_skcipher_set_flags(child, tfm->base.crt_flags &
889 CRYPTO_TFM_REQ_MASK);
890 ret = crypto_skcipher_setkey(child, key, keylen);
894 /* Setup Encryption Security Context & Command label template */
895 if (sa_init_sc(&ctx->enc, key, keylen, NULL, 0, ad, 1,
899 cmdl_len = sa_format_cmdl_gen(&cfg,
901 &ctx->enc.cmdl_upd_info);
902 if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
905 ctx->enc.cmdl_size = cmdl_len;
907 /* Setup Decryption Security Context & Command label template */
908 if (sa_init_sc(&ctx->dec, key, keylen, NULL, 0, ad, 0,
912 cfg.enc_eng_id = ad->enc_eng.eng_id;
913 cmdl_len = sa_format_cmdl_gen(&cfg, (u8 *)ctx->dec.cmdl,
914 &ctx->dec.cmdl_upd_info);
916 if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
919 ctx->dec.cmdl_size = cmdl_len;
920 ctx->iv_idx = ad->iv_idx;
925 dev_err(sa_k3_dev, "%s: badkey\n", __func__);
929 static int sa_aes_cbc_setkey(struct crypto_skcipher *tfm, const u8 *key,
932 struct algo_data ad = { 0 };
933 /* Convert the key size (16/24/32) to the key size index (0/1/2) */
934 int key_idx = (keylen >> 3) - 2;
939 ad.mci_enc = mci_cbc_enc_array[key_idx];
940 ad.mci_dec = mci_cbc_dec_array[key_idx];
942 ad.ealg_id = SA_EALG_ID_AES_CBC;
946 return sa_cipher_setkey(tfm, key, keylen, &ad);
949 static int sa_aes_ecb_setkey(struct crypto_skcipher *tfm, const u8 *key,
952 struct algo_data ad = { 0 };
953 /* Convert the key size (16/24/32) to the key size index (0/1/2) */
954 int key_idx = (keylen >> 3) - 2;
959 ad.mci_enc = mci_ecb_enc_array[key_idx];
960 ad.mci_dec = mci_ecb_dec_array[key_idx];
962 ad.ealg_id = SA_EALG_ID_AES_ECB;
964 return sa_cipher_setkey(tfm, key, keylen, &ad);
967 static int sa_3des_cbc_setkey(struct crypto_skcipher *tfm, const u8 *key,
970 struct algo_data ad = { 0 };
972 ad.mci_enc = mci_cbc_3des_enc_array;
973 ad.mci_dec = mci_cbc_3des_dec_array;
974 ad.ealg_id = SA_EALG_ID_3DES_CBC;
978 return sa_cipher_setkey(tfm, key, keylen, &ad);
981 static int sa_3des_ecb_setkey(struct crypto_skcipher *tfm, const u8 *key,
984 struct algo_data ad = { 0 };
986 ad.mci_enc = mci_ecb_3des_enc_array;
987 ad.mci_dec = mci_ecb_3des_dec_array;
989 return sa_cipher_setkey(tfm, key, keylen, &ad);
992 static void sa_sync_from_device(struct sa_rx_data *rxd)
994 struct sg_table *sgt;
996 if (rxd->mapped_sg[0].dir == DMA_BIDIRECTIONAL)
997 sgt = &rxd->mapped_sg[0].sgt;
999 sgt = &rxd->mapped_sg[1].sgt;
1001 dma_sync_sgtable_for_cpu(rxd->ddev, sgt, DMA_FROM_DEVICE);
1004 static void sa_free_sa_rx_data(struct sa_rx_data *rxd)
1008 for (i = 0; i < ARRAY_SIZE(rxd->mapped_sg); i++) {
1009 struct sa_mapped_sg *mapped_sg = &rxd->mapped_sg[i];
1011 if (mapped_sg->mapped) {
1012 dma_unmap_sgtable(rxd->ddev, &mapped_sg->sgt,
1014 kfree(mapped_sg->split_sg);
1021 static void sa_aes_dma_in_callback(void *data)
1023 struct sa_rx_data *rxd = (struct sa_rx_data *)data;
1024 struct skcipher_request *req;
1030 sa_sync_from_device(rxd);
1031 req = container_of(rxd->req, struct skcipher_request, base);
1034 mdptr = (__be32 *)dmaengine_desc_get_metadata_ptr(rxd->tx_in, &pl,
1036 result = (u32 *)req->iv;
1038 for (i = 0; i < (rxd->enc_iv_size / 4); i++)
1039 result[i] = be32_to_cpu(mdptr[i + rxd->iv_idx]);
1042 sa_free_sa_rx_data(rxd);
1044 skcipher_request_complete(req, 0);
1048 sa_prepare_tx_desc(u32 *mdptr, u32 pslen, u32 *psdata, u32 epiblen, u32 *epib)
1053 for (out = mdptr, in = epib, i = 0; i < epiblen / sizeof(u32); i++)
1056 mdptr[4] = (0xFFFF << 16);
1057 for (out = &mdptr[5], in = psdata, i = 0;
1058 i < pslen / sizeof(u32); i++)
1062 static int sa_run(struct sa_req *req)
1064 struct sa_rx_data *rxd;
1066 u32 cmdl[SA_MAX_CMDL_WORDS];
1067 struct sa_crypto_data *pdata = dev_get_drvdata(sa_k3_dev);
1068 struct device *ddev;
1069 struct dma_chan *dma_rx;
1070 int sg_nents, src_nents, dst_nents;
1071 struct scatterlist *src, *dst;
1072 size_t pl, ml, split_size;
1073 struct sa_ctx_info *sa_ctx = req->enc ? &req->ctx->enc : &req->ctx->dec;
1075 struct dma_async_tx_descriptor *tx_out;
1078 enum dma_data_direction dir_src;
1079 struct sa_mapped_sg *mapped_sg;
1081 gfp_flags = req->base->flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
1082 GFP_KERNEL : GFP_ATOMIC;
1084 rxd = kzalloc(sizeof(*rxd), gfp_flags);
1088 if (req->src != req->dst) {
1090 dir_src = DMA_TO_DEVICE;
1093 dir_src = DMA_BIDIRECTIONAL;
1097 * SA2UL has an interesting feature where the receive DMA channel
1098 * is selected based on the data passed to the engine. Within the
1099 * transition range, there is also a space where it is impossible
1100 * to determine where the data will end up, and this should be
1101 * avoided. This will be handled by the SW fallback mechanism by
1102 * the individual algorithm implementations.
1104 if (req->size >= 256)
1105 dma_rx = pdata->dma_rx2;
1107 dma_rx = pdata->dma_rx1;
1109 ddev = dma_rx->device->dev;
1112 memcpy(cmdl, sa_ctx->cmdl, sa_ctx->cmdl_size);
1114 sa_update_cmdl(req, cmdl, &sa_ctx->cmdl_upd_info);
1116 if (req->type != CRYPTO_ALG_TYPE_AHASH) {
1119 (SA_REQ_SUBTYPE_ENC << SA_REQ_SUBTYPE_SHIFT);
1122 (SA_REQ_SUBTYPE_DEC << SA_REQ_SUBTYPE_SHIFT);
1125 cmdl[sa_ctx->cmdl_size / sizeof(u32)] = req->type;
1128 * Map the packets, first we check if the data fits into a single
1129 * sg entry and use that if possible. If it does not fit, we check
1130 * if we need to do sg_split to align the scatterlist data on the
1131 * actual data size being processed by the crypto engine.
1134 sg_nents = sg_nents_for_len(src, req->size);
1136 split_size = req->size;
1138 mapped_sg = &rxd->mapped_sg[0];
1139 if (sg_nents == 1 && split_size <= req->src->length) {
1140 src = &mapped_sg->static_sg;
1142 sg_init_table(src, 1);
1143 sg_set_page(src, sg_page(req->src), split_size,
1146 mapped_sg->sgt.sgl = src;
1147 mapped_sg->sgt.orig_nents = src_nents;
1148 ret = dma_map_sgtable(ddev, &mapped_sg->sgt, dir_src, 0);
1152 mapped_sg->dir = dir_src;
1153 mapped_sg->mapped = true;
1155 mapped_sg->sgt.sgl = req->src;
1156 mapped_sg->sgt.orig_nents = sg_nents;
1157 ret = dma_map_sgtable(ddev, &mapped_sg->sgt, dir_src, 0);
1161 mapped_sg->dir = dir_src;
1162 mapped_sg->mapped = true;
1164 ret = sg_split(mapped_sg->sgt.sgl, mapped_sg->sgt.nents, 0, 1,
1165 &split_size, &src, &src_nents, gfp_flags);
1167 src_nents = mapped_sg->sgt.nents;
1168 src = mapped_sg->sgt.sgl;
1170 mapped_sg->split_sg = src;
1174 dma_sync_sgtable_for_device(ddev, &mapped_sg->sgt, DMA_TO_DEVICE);
1177 dst_nents = src_nents;
1180 dst_nents = sg_nents_for_len(req->dst, req->size);
1181 mapped_sg = &rxd->mapped_sg[1];
1183 if (dst_nents == 1 && split_size <= req->dst->length) {
1184 dst = &mapped_sg->static_sg;
1186 sg_init_table(dst, 1);
1187 sg_set_page(dst, sg_page(req->dst), split_size,
1190 mapped_sg->sgt.sgl = dst;
1191 mapped_sg->sgt.orig_nents = dst_nents;
1192 ret = dma_map_sgtable(ddev, &mapped_sg->sgt,
1193 DMA_FROM_DEVICE, 0);
1197 mapped_sg->dir = DMA_FROM_DEVICE;
1198 mapped_sg->mapped = true;
1200 mapped_sg->sgt.sgl = req->dst;
1201 mapped_sg->sgt.orig_nents = dst_nents;
1202 ret = dma_map_sgtable(ddev, &mapped_sg->sgt,
1203 DMA_FROM_DEVICE, 0);
1207 mapped_sg->dir = DMA_FROM_DEVICE;
1208 mapped_sg->mapped = true;
1210 ret = sg_split(mapped_sg->sgt.sgl, mapped_sg->sgt.nents,
1211 0, 1, &split_size, &dst, &dst_nents,
1214 dst_nents = mapped_sg->sgt.nents;
1215 dst = mapped_sg->sgt.sgl;
1217 mapped_sg->split_sg = dst;
1222 rxd->tx_in = dmaengine_prep_slave_sg(dma_rx, dst, dst_nents,
1224 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
1226 dev_err(pdata->dev, "IN prep_slave_sg() failed\n");
1231 rxd->req = (void *)req->base;
1232 rxd->enc = req->enc;
1233 rxd->iv_idx = req->ctx->iv_idx;
1234 rxd->enc_iv_size = sa_ctx->cmdl_upd_info.enc_iv.size;
1235 rxd->tx_in->callback = req->callback;
1236 rxd->tx_in->callback_param = rxd;
1238 tx_out = dmaengine_prep_slave_sg(pdata->dma_tx, src,
1239 src_nents, DMA_MEM_TO_DEV,
1240 DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
1243 dev_err(pdata->dev, "OUT prep_slave_sg() failed\n");
1249 * Prepare metadata for DMA engine. This essentially describes the
1250 * crypto algorithm to be used, data sizes, different keys etc.
1252 mdptr = (u32 *)dmaengine_desc_get_metadata_ptr(tx_out, &pl, &ml);
1254 sa_prepare_tx_desc(mdptr, (sa_ctx->cmdl_size + (SA_PSDATA_CTX_WORDS *
1255 sizeof(u32))), cmdl, sizeof(sa_ctx->epib),
1258 ml = sa_ctx->cmdl_size + (SA_PSDATA_CTX_WORDS * sizeof(u32));
1259 dmaengine_desc_set_metadata_len(tx_out, req->mdata_size);
1261 dmaengine_submit(tx_out);
1262 dmaengine_submit(rxd->tx_in);
1264 dma_async_issue_pending(dma_rx);
1265 dma_async_issue_pending(pdata->dma_tx);
1267 return -EINPROGRESS;
1270 sa_free_sa_rx_data(rxd);
1275 static int sa_cipher_run(struct skcipher_request *req, u8 *iv, int enc)
1277 struct sa_tfm_ctx *ctx =
1278 crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
1279 struct crypto_alg *alg = req->base.tfm->__crt_alg;
1280 struct sa_req sa_req = { 0 };
1285 if (req->cryptlen % alg->cra_blocksize)
1288 /* Use SW fallback if the data size is not supported */
1289 if (req->cryptlen > SA_MAX_DATA_SZ ||
1290 (req->cryptlen >= SA_UNSAFE_DATA_SZ_MIN &&
1291 req->cryptlen <= SA_UNSAFE_DATA_SZ_MAX)) {
1292 struct skcipher_request *subreq = skcipher_request_ctx(req);
1294 skcipher_request_set_tfm(subreq, ctx->fallback.skcipher);
1295 skcipher_request_set_callback(subreq, req->base.flags,
1298 skcipher_request_set_crypt(subreq, req->src, req->dst,
1299 req->cryptlen, req->iv);
1301 return crypto_skcipher_encrypt(subreq);
1303 return crypto_skcipher_decrypt(subreq);
1306 sa_req.size = req->cryptlen;
1307 sa_req.enc_size = req->cryptlen;
1308 sa_req.src = req->src;
1309 sa_req.dst = req->dst;
1311 sa_req.type = CRYPTO_ALG_TYPE_SKCIPHER;
1313 sa_req.callback = sa_aes_dma_in_callback;
1314 sa_req.mdata_size = 44;
1315 sa_req.base = &req->base;
1318 return sa_run(&sa_req);
1321 static int sa_encrypt(struct skcipher_request *req)
1323 return sa_cipher_run(req, req->iv, 1);
1326 static int sa_decrypt(struct skcipher_request *req)
1328 return sa_cipher_run(req, req->iv, 0);
1331 static void sa_sha_dma_in_callback(void *data)
1333 struct sa_rx_data *rxd = (struct sa_rx_data *)data;
1334 struct ahash_request *req;
1335 struct crypto_ahash *tfm;
1336 unsigned int authsize;
1342 sa_sync_from_device(rxd);
1343 req = container_of(rxd->req, struct ahash_request, base);
1344 tfm = crypto_ahash_reqtfm(req);
1345 authsize = crypto_ahash_digestsize(tfm);
1347 mdptr = (__be32 *)dmaengine_desc_get_metadata_ptr(rxd->tx_in, &pl, &ml);
1348 result = (u32 *)req->result;
1350 for (i = 0; i < (authsize / 4); i++)
1351 result[i] = be32_to_cpu(mdptr[i + 4]);
1353 sa_free_sa_rx_data(rxd);
1355 ahash_request_complete(req, 0);
1358 static int zero_message_process(struct ahash_request *req)
1360 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1361 int sa_digest_size = crypto_ahash_digestsize(tfm);
1363 switch (sa_digest_size) {
1364 case SHA1_DIGEST_SIZE:
1365 memcpy(req->result, sha1_zero_message_hash, sa_digest_size);
1367 case SHA256_DIGEST_SIZE:
1368 memcpy(req->result, sha256_zero_message_hash, sa_digest_size);
1370 case SHA512_DIGEST_SIZE:
1371 memcpy(req->result, sha512_zero_message_hash, sa_digest_size);
1380 static int sa_sha_run(struct ahash_request *req)
1382 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
1383 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1384 struct sa_req sa_req = { 0 };
1387 auth_len = req->nbytes;
1390 return zero_message_process(req);
1392 if (auth_len > SA_MAX_DATA_SZ ||
1393 (auth_len >= SA_UNSAFE_DATA_SZ_MIN &&
1394 auth_len <= SA_UNSAFE_DATA_SZ_MAX)) {
1395 struct ahash_request *subreq = &rctx->fallback_req;
1398 ahash_request_set_tfm(subreq, ctx->fallback.ahash);
1399 subreq->base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1401 crypto_ahash_init(subreq);
1403 subreq->nbytes = auth_len;
1404 subreq->src = req->src;
1405 subreq->result = req->result;
1407 ret |= crypto_ahash_update(subreq);
1411 ret |= crypto_ahash_final(subreq);
1416 sa_req.size = auth_len;
1417 sa_req.auth_size = auth_len;
1418 sa_req.src = req->src;
1419 sa_req.dst = req->src;
1421 sa_req.type = CRYPTO_ALG_TYPE_AHASH;
1422 sa_req.callback = sa_sha_dma_in_callback;
1423 sa_req.mdata_size = 28;
1425 sa_req.base = &req->base;
1427 return sa_run(&sa_req);
1430 static int sa_sha_setup(struct sa_tfm_ctx *ctx, struct algo_data *ad)
1432 int bs = crypto_shash_blocksize(ctx->shash);
1434 struct sa_cmdl_cfg cfg;
1436 ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ;
1437 ad->auth_eng.eng_id = SA_ENG_ID_AM1;
1438 ad->auth_eng.sc_size = SA_CTX_AUTH_TYPE2_SZ;
1440 memset(ctx->authkey, 0, bs);
1441 memset(&cfg, 0, sizeof(cfg));
1442 cfg.aalg = ad->aalg_id;
1443 cfg.enc_eng_id = ad->enc_eng.eng_id;
1444 cfg.auth_eng_id = ad->auth_eng.eng_id;
1449 /* Setup Encryption Security Context & Command label template */
1450 if (sa_init_sc(&ctx->enc, NULL, 0, NULL, 0, ad, 0,
1454 cmdl_len = sa_format_cmdl_gen(&cfg,
1455 (u8 *)ctx->enc.cmdl,
1456 &ctx->enc.cmdl_upd_info);
1457 if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
1460 ctx->enc.cmdl_size = cmdl_len;
1465 dev_err(sa_k3_dev, "%s: badkey\n", __func__);
1469 static int sa_sha_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
1471 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
1472 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
1475 memset(ctx, 0, sizeof(*ctx));
1476 ctx->dev_data = data;
1477 ret = sa_init_ctx_info(&ctx->enc, data);
1482 ctx->shash = crypto_alloc_shash(alg_base, 0,
1483 CRYPTO_ALG_NEED_FALLBACK);
1484 if (IS_ERR(ctx->shash)) {
1485 dev_err(sa_k3_dev, "base driver %s couldn't be loaded\n",
1487 return PTR_ERR(ctx->shash);
1490 ctx->fallback.ahash =
1491 crypto_alloc_ahash(alg_base, 0,
1492 CRYPTO_ALG_NEED_FALLBACK);
1493 if (IS_ERR(ctx->fallback.ahash)) {
1494 dev_err(ctx->dev_data->dev,
1495 "Could not load fallback driver\n");
1496 return PTR_ERR(ctx->fallback.ahash);
1500 dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
1501 __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
1502 ctx->dec.sc_id, &ctx->dec.sc_phys);
1504 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
1505 sizeof(struct sa_sha_req_ctx) +
1506 crypto_ahash_reqsize(ctx->fallback.ahash));
1511 static int sa_sha_digest(struct ahash_request *req)
1513 return sa_sha_run(req);
1516 static int sa_sha_init(struct ahash_request *req)
1518 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1519 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1520 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1522 dev_dbg(sa_k3_dev, "init: digest size: %u, rctx=%p\n",
1523 crypto_ahash_digestsize(tfm), rctx);
1525 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
1526 rctx->fallback_req.base.flags =
1527 req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1529 return crypto_ahash_init(&rctx->fallback_req);
1532 static int sa_sha_update(struct ahash_request *req)
1534 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1535 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1536 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1538 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
1539 rctx->fallback_req.base.flags =
1540 req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1541 rctx->fallback_req.nbytes = req->nbytes;
1542 rctx->fallback_req.src = req->src;
1544 return crypto_ahash_update(&rctx->fallback_req);
1547 static int sa_sha_final(struct ahash_request *req)
1549 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1550 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1551 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1553 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
1554 rctx->fallback_req.base.flags =
1555 req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1556 rctx->fallback_req.result = req->result;
1558 return crypto_ahash_final(&rctx->fallback_req);
1561 static int sa_sha_finup(struct ahash_request *req)
1563 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1564 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1565 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1567 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
1568 rctx->fallback_req.base.flags =
1569 req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1571 rctx->fallback_req.nbytes = req->nbytes;
1572 rctx->fallback_req.src = req->src;
1573 rctx->fallback_req.result = req->result;
1575 return crypto_ahash_finup(&rctx->fallback_req);
1578 static int sa_sha_import(struct ahash_request *req, const void *in)
1580 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1581 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1582 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1584 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback.ahash);
1585 rctx->fallback_req.base.flags = req->base.flags &
1586 CRYPTO_TFM_REQ_MAY_SLEEP;
1588 return crypto_ahash_import(&rctx->fallback_req, in);
1591 static int sa_sha_export(struct ahash_request *req, void *out)
1593 struct sa_sha_req_ctx *rctx = ahash_request_ctx(req);
1594 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
1595 struct sa_tfm_ctx *ctx = crypto_ahash_ctx(tfm);
1596 struct ahash_request *subreq = &rctx->fallback_req;
1598 ahash_request_set_tfm(subreq, ctx->fallback.ahash);
1599 subreq->base.flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
1601 return crypto_ahash_export(subreq, out);
1604 static int sa_sha1_cra_init(struct crypto_tfm *tfm)
1606 struct algo_data ad = { 0 };
1607 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
1609 sa_sha_cra_init_alg(tfm, "sha1");
1611 ad.aalg_id = SA_AALG_ID_SHA1;
1612 ad.hash_size = SHA1_DIGEST_SIZE;
1613 ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA1;
1615 sa_sha_setup(ctx, &ad);
1620 static int sa_sha256_cra_init(struct crypto_tfm *tfm)
1622 struct algo_data ad = { 0 };
1623 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
1625 sa_sha_cra_init_alg(tfm, "sha256");
1627 ad.aalg_id = SA_AALG_ID_SHA2_256;
1628 ad.hash_size = SHA256_DIGEST_SIZE;
1629 ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA256;
1631 sa_sha_setup(ctx, &ad);
1636 static int sa_sha512_cra_init(struct crypto_tfm *tfm)
1638 struct algo_data ad = { 0 };
1639 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
1641 sa_sha_cra_init_alg(tfm, "sha512");
1643 ad.aalg_id = SA_AALG_ID_SHA2_512;
1644 ad.hash_size = SHA512_DIGEST_SIZE;
1645 ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA512;
1647 sa_sha_setup(ctx, &ad);
1652 static void sa_sha_cra_exit(struct crypto_tfm *tfm)
1654 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(tfm);
1655 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
1657 dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
1658 __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
1659 ctx->dec.sc_id, &ctx->dec.sc_phys);
1661 if (crypto_tfm_alg_type(tfm) == CRYPTO_ALG_TYPE_AHASH)
1662 sa_free_ctx_info(&ctx->enc, data);
1664 crypto_free_shash(ctx->shash);
1665 crypto_free_ahash(ctx->fallback.ahash);
1668 static void sa_aead_dma_in_callback(void *data)
1670 struct sa_rx_data *rxd = (struct sa_rx_data *)data;
1671 struct aead_request *req;
1672 struct crypto_aead *tfm;
1674 unsigned int authsize;
1675 u8 auth_tag[SA_MAX_AUTH_TAG_SZ];
1682 sa_sync_from_device(rxd);
1683 req = container_of(rxd->req, struct aead_request, base);
1684 tfm = crypto_aead_reqtfm(req);
1685 start = req->assoclen + req->cryptlen;
1686 authsize = crypto_aead_authsize(tfm);
1688 mdptr = (u32 *)dmaengine_desc_get_metadata_ptr(rxd->tx_in, &pl, &ml);
1689 for (i = 0; i < (authsize / 4); i++)
1690 mdptr[i + 4] = swab32(mdptr[i + 4]);
1692 auth_len = req->assoclen + req->cryptlen;
1695 scatterwalk_map_and_copy(&mdptr[4], req->dst, start, authsize,
1698 auth_len -= authsize;
1700 scatterwalk_map_and_copy(auth_tag, req->src, start, authsize,
1703 err = memcmp(&mdptr[4], auth_tag, authsize) ? -EBADMSG : 0;
1706 sa_free_sa_rx_data(rxd);
1708 aead_request_complete(req, err);
1711 static int sa_cra_init_aead(struct crypto_aead *tfm, const char *hash,
1712 const char *fallback)
1714 struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
1715 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
1718 memzero_explicit(ctx, sizeof(*ctx));
1720 ctx->shash = crypto_alloc_shash(hash, 0, CRYPTO_ALG_NEED_FALLBACK);
1721 if (IS_ERR(ctx->shash)) {
1722 dev_err(sa_k3_dev, "base driver %s couldn't be loaded\n", hash);
1723 return PTR_ERR(ctx->shash);
1726 ctx->fallback.aead = crypto_alloc_aead(fallback, 0,
1727 CRYPTO_ALG_NEED_FALLBACK);
1729 if (IS_ERR(ctx->fallback.aead)) {
1730 dev_err(sa_k3_dev, "fallback driver %s couldn't be loaded\n",
1732 return PTR_ERR(ctx->fallback.aead);
1735 crypto_aead_set_reqsize(tfm, sizeof(struct aead_request) +
1736 crypto_aead_reqsize(ctx->fallback.aead));
1738 ret = sa_init_ctx_info(&ctx->enc, data);
1742 ret = sa_init_ctx_info(&ctx->dec, data);
1744 sa_free_ctx_info(&ctx->enc, data);
1748 dev_dbg(sa_k3_dev, "%s(0x%p) sc-ids(0x%x(0x%pad), 0x%x(0x%pad))\n",
1749 __func__, tfm, ctx->enc.sc_id, &ctx->enc.sc_phys,
1750 ctx->dec.sc_id, &ctx->dec.sc_phys);
1755 static int sa_cra_init_aead_sha1(struct crypto_aead *tfm)
1757 return sa_cra_init_aead(tfm, "sha1",
1758 "authenc(hmac(sha1-ce),cbc(aes-ce))");
1761 static int sa_cra_init_aead_sha256(struct crypto_aead *tfm)
1763 return sa_cra_init_aead(tfm, "sha256",
1764 "authenc(hmac(sha256-ce),cbc(aes-ce))");
1767 static void sa_exit_tfm_aead(struct crypto_aead *tfm)
1769 struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
1770 struct sa_crypto_data *data = dev_get_drvdata(sa_k3_dev);
1772 crypto_free_shash(ctx->shash);
1773 crypto_free_aead(ctx->fallback.aead);
1775 sa_free_ctx_info(&ctx->enc, data);
1776 sa_free_ctx_info(&ctx->dec, data);
1779 /* AEAD algorithm configuration interface function */
1780 static int sa_aead_setkey(struct crypto_aead *authenc,
1781 const u8 *key, unsigned int keylen,
1782 struct algo_data *ad)
1784 struct sa_tfm_ctx *ctx = crypto_aead_ctx(authenc);
1785 struct crypto_authenc_keys keys;
1787 struct sa_cmdl_cfg cfg;
1790 if (crypto_authenc_extractkeys(&keys, key, keylen) != 0)
1793 /* Convert the key size (16/24/32) to the key size index (0/1/2) */
1794 key_idx = (keys.enckeylen >> 3) - 2;
1799 ad->enc_eng.eng_id = SA_ENG_ID_EM1;
1800 ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ;
1801 ad->auth_eng.eng_id = SA_ENG_ID_AM1;
1802 ad->auth_eng.sc_size = SA_CTX_AUTH_TYPE2_SZ;
1803 ad->mci_enc = mci_cbc_enc_no_iv_array[key_idx];
1804 ad->mci_dec = mci_cbc_dec_no_iv_array[key_idx];
1806 ad->keyed_mac = true;
1807 ad->ealg_id = SA_EALG_ID_AES_CBC;
1808 ad->prep_iopad = sa_prepare_iopads;
1810 memset(&cfg, 0, sizeof(cfg));
1812 cfg.aalg = ad->aalg_id;
1813 cfg.enc_eng_id = ad->enc_eng.eng_id;
1814 cfg.auth_eng_id = ad->auth_eng.eng_id;
1815 cfg.iv_size = crypto_aead_ivsize(authenc);
1816 cfg.akey = keys.authkey;
1817 cfg.akey_len = keys.authkeylen;
1819 /* Setup Encryption Security Context & Command label template */
1820 if (sa_init_sc(&ctx->enc, keys.enckey, keys.enckeylen,
1821 keys.authkey, keys.authkeylen,
1822 ad, 1, &ctx->enc.epib[1]))
1825 cmdl_len = sa_format_cmdl_gen(&cfg,
1826 (u8 *)ctx->enc.cmdl,
1827 &ctx->enc.cmdl_upd_info);
1828 if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
1831 ctx->enc.cmdl_size = cmdl_len;
1833 /* Setup Decryption Security Context & Command label template */
1834 if (sa_init_sc(&ctx->dec, keys.enckey, keys.enckeylen,
1835 keys.authkey, keys.authkeylen,
1836 ad, 0, &ctx->dec.epib[1]))
1840 cmdl_len = sa_format_cmdl_gen(&cfg, (u8 *)ctx->dec.cmdl,
1841 &ctx->dec.cmdl_upd_info);
1843 if (cmdl_len <= 0 || (cmdl_len > SA_MAX_CMDL_WORDS * sizeof(u32)))
1846 ctx->dec.cmdl_size = cmdl_len;
1848 crypto_aead_clear_flags(ctx->fallback.aead, CRYPTO_TFM_REQ_MASK);
1849 crypto_aead_set_flags(ctx->fallback.aead,
1850 crypto_aead_get_flags(authenc) &
1851 CRYPTO_TFM_REQ_MASK);
1852 crypto_aead_setkey(ctx->fallback.aead, key, keylen);
1857 static int sa_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize)
1859 struct sa_tfm_ctx *ctx = crypto_tfm_ctx(crypto_aead_tfm(tfm));
1861 return crypto_aead_setauthsize(ctx->fallback.aead, authsize);
1864 static int sa_aead_cbc_sha1_setkey(struct crypto_aead *authenc,
1865 const u8 *key, unsigned int keylen)
1867 struct algo_data ad = { 0 };
1869 ad.ealg_id = SA_EALG_ID_AES_CBC;
1870 ad.aalg_id = SA_AALG_ID_HMAC_SHA1;
1871 ad.hash_size = SHA1_DIGEST_SIZE;
1872 ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA1;
1874 return sa_aead_setkey(authenc, key, keylen, &ad);
1877 static int sa_aead_cbc_sha256_setkey(struct crypto_aead *authenc,
1878 const u8 *key, unsigned int keylen)
1880 struct algo_data ad = { 0 };
1882 ad.ealg_id = SA_EALG_ID_AES_CBC;
1883 ad.aalg_id = SA_AALG_ID_HMAC_SHA2_256;
1884 ad.hash_size = SHA256_DIGEST_SIZE;
1885 ad.auth_ctrl = SA_AUTH_SW_CTRL_SHA256;
1887 return sa_aead_setkey(authenc, key, keylen, &ad);
1890 static int sa_aead_run(struct aead_request *req, u8 *iv, int enc)
1892 struct crypto_aead *tfm = crypto_aead_reqtfm(req);
1893 struct sa_tfm_ctx *ctx = crypto_aead_ctx(tfm);
1894 struct sa_req sa_req = { 0 };
1895 size_t auth_size, enc_size;
1897 enc_size = req->cryptlen;
1898 auth_size = req->assoclen + req->cryptlen;
1901 enc_size -= crypto_aead_authsize(tfm);
1902 auth_size -= crypto_aead_authsize(tfm);
1905 if (auth_size > SA_MAX_DATA_SZ ||
1906 (auth_size >= SA_UNSAFE_DATA_SZ_MIN &&
1907 auth_size <= SA_UNSAFE_DATA_SZ_MAX)) {
1908 struct aead_request *subreq = aead_request_ctx(req);
1911 aead_request_set_tfm(subreq, ctx->fallback.aead);
1912 aead_request_set_callback(subreq, req->base.flags,
1913 req->base.complete, req->base.data);
1914 aead_request_set_crypt(subreq, req->src, req->dst,
1915 req->cryptlen, req->iv);
1916 aead_request_set_ad(subreq, req->assoclen);
1918 ret = enc ? crypto_aead_encrypt(subreq) :
1919 crypto_aead_decrypt(subreq);
1923 sa_req.enc_offset = req->assoclen;
1924 sa_req.enc_size = enc_size;
1925 sa_req.auth_size = auth_size;
1926 sa_req.size = auth_size;
1928 sa_req.type = CRYPTO_ALG_TYPE_AEAD;
1930 sa_req.callback = sa_aead_dma_in_callback;
1931 sa_req.mdata_size = 52;
1932 sa_req.base = &req->base;
1934 sa_req.src = req->src;
1935 sa_req.dst = req->dst;
1937 return sa_run(&sa_req);
1940 /* AEAD algorithm encrypt interface function */
1941 static int sa_aead_encrypt(struct aead_request *req)
1943 return sa_aead_run(req, req->iv, 1);
1946 /* AEAD algorithm decrypt interface function */
1947 static int sa_aead_decrypt(struct aead_request *req)
1949 return sa_aead_run(req, req->iv, 0);
1952 static struct sa_alg_tmpl sa_algs[] = {
1954 .type = CRYPTO_ALG_TYPE_SKCIPHER,
1956 .base.cra_name = "cbc(aes)",
1957 .base.cra_driver_name = "cbc-aes-sa2ul",
1958 .base.cra_priority = 30000,
1959 .base.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
1960 CRYPTO_ALG_KERN_DRIVER_ONLY |
1962 CRYPTO_ALG_NEED_FALLBACK,
1963 .base.cra_blocksize = AES_BLOCK_SIZE,
1964 .base.cra_ctxsize = sizeof(struct sa_tfm_ctx),
1965 .base.cra_module = THIS_MODULE,
1966 .init = sa_cipher_cra_init,
1967 .exit = sa_cipher_cra_exit,
1968 .min_keysize = AES_MIN_KEY_SIZE,
1969 .max_keysize = AES_MAX_KEY_SIZE,
1970 .ivsize = AES_BLOCK_SIZE,
1971 .setkey = sa_aes_cbc_setkey,
1972 .encrypt = sa_encrypt,
1973 .decrypt = sa_decrypt,
1977 .type = CRYPTO_ALG_TYPE_SKCIPHER,
1979 .base.cra_name = "ecb(aes)",
1980 .base.cra_driver_name = "ecb-aes-sa2ul",
1981 .base.cra_priority = 30000,
1982 .base.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
1983 CRYPTO_ALG_KERN_DRIVER_ONLY |
1985 CRYPTO_ALG_NEED_FALLBACK,
1986 .base.cra_blocksize = AES_BLOCK_SIZE,
1987 .base.cra_ctxsize = sizeof(struct sa_tfm_ctx),
1988 .base.cra_module = THIS_MODULE,
1989 .init = sa_cipher_cra_init,
1990 .exit = sa_cipher_cra_exit,
1991 .min_keysize = AES_MIN_KEY_SIZE,
1992 .max_keysize = AES_MAX_KEY_SIZE,
1993 .setkey = sa_aes_ecb_setkey,
1994 .encrypt = sa_encrypt,
1995 .decrypt = sa_decrypt,
1999 .type = CRYPTO_ALG_TYPE_SKCIPHER,
2001 .base.cra_name = "cbc(des3_ede)",
2002 .base.cra_driver_name = "cbc-des3-sa2ul",
2003 .base.cra_priority = 30000,
2004 .base.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
2005 CRYPTO_ALG_KERN_DRIVER_ONLY |
2007 CRYPTO_ALG_NEED_FALLBACK,
2008 .base.cra_blocksize = DES_BLOCK_SIZE,
2009 .base.cra_ctxsize = sizeof(struct sa_tfm_ctx),
2010 .base.cra_module = THIS_MODULE,
2011 .init = sa_cipher_cra_init,
2012 .exit = sa_cipher_cra_exit,
2013 .min_keysize = 3 * DES_KEY_SIZE,
2014 .max_keysize = 3 * DES_KEY_SIZE,
2015 .ivsize = DES_BLOCK_SIZE,
2016 .setkey = sa_3des_cbc_setkey,
2017 .encrypt = sa_encrypt,
2018 .decrypt = sa_decrypt,
2022 .type = CRYPTO_ALG_TYPE_SKCIPHER,
2024 .base.cra_name = "ecb(des3_ede)",
2025 .base.cra_driver_name = "ecb-des3-sa2ul",
2026 .base.cra_priority = 30000,
2027 .base.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
2028 CRYPTO_ALG_KERN_DRIVER_ONLY |
2030 CRYPTO_ALG_NEED_FALLBACK,
2031 .base.cra_blocksize = DES_BLOCK_SIZE,
2032 .base.cra_ctxsize = sizeof(struct sa_tfm_ctx),
2033 .base.cra_module = THIS_MODULE,
2034 .init = sa_cipher_cra_init,
2035 .exit = sa_cipher_cra_exit,
2036 .min_keysize = 3 * DES_KEY_SIZE,
2037 .max_keysize = 3 * DES_KEY_SIZE,
2038 .setkey = sa_3des_ecb_setkey,
2039 .encrypt = sa_encrypt,
2040 .decrypt = sa_decrypt,
2044 .type = CRYPTO_ALG_TYPE_AHASH,
2048 .cra_driver_name = "sha1-sa2ul",
2049 .cra_priority = 400,
2050 .cra_flags = CRYPTO_ALG_TYPE_AHASH |
2052 CRYPTO_ALG_KERN_DRIVER_ONLY |
2053 CRYPTO_ALG_NEED_FALLBACK,
2054 .cra_blocksize = SHA1_BLOCK_SIZE,
2055 .cra_ctxsize = sizeof(struct sa_tfm_ctx),
2056 .cra_module = THIS_MODULE,
2057 .cra_init = sa_sha1_cra_init,
2058 .cra_exit = sa_sha_cra_exit,
2060 .halg.digestsize = SHA1_DIGEST_SIZE,
2061 .halg.statesize = sizeof(struct sa_sha_req_ctx) +
2062 sizeof(struct sha1_state),
2063 .init = sa_sha_init,
2064 .update = sa_sha_update,
2065 .final = sa_sha_final,
2066 .finup = sa_sha_finup,
2067 .digest = sa_sha_digest,
2068 .export = sa_sha_export,
2069 .import = sa_sha_import,
2073 .type = CRYPTO_ALG_TYPE_AHASH,
2076 .cra_name = "sha256",
2077 .cra_driver_name = "sha256-sa2ul",
2078 .cra_priority = 400,
2079 .cra_flags = CRYPTO_ALG_TYPE_AHASH |
2081 CRYPTO_ALG_KERN_DRIVER_ONLY |
2082 CRYPTO_ALG_NEED_FALLBACK,
2083 .cra_blocksize = SHA256_BLOCK_SIZE,
2084 .cra_ctxsize = sizeof(struct sa_tfm_ctx),
2085 .cra_module = THIS_MODULE,
2086 .cra_init = sa_sha256_cra_init,
2087 .cra_exit = sa_sha_cra_exit,
2089 .halg.digestsize = SHA256_DIGEST_SIZE,
2090 .halg.statesize = sizeof(struct sa_sha_req_ctx) +
2091 sizeof(struct sha256_state),
2092 .init = sa_sha_init,
2093 .update = sa_sha_update,
2094 .final = sa_sha_final,
2095 .finup = sa_sha_finup,
2096 .digest = sa_sha_digest,
2097 .export = sa_sha_export,
2098 .import = sa_sha_import,
2102 .type = CRYPTO_ALG_TYPE_AHASH,
2105 .cra_name = "sha512",
2106 .cra_driver_name = "sha512-sa2ul",
2107 .cra_priority = 400,
2108 .cra_flags = CRYPTO_ALG_TYPE_AHASH |
2110 CRYPTO_ALG_KERN_DRIVER_ONLY |
2111 CRYPTO_ALG_NEED_FALLBACK,
2112 .cra_blocksize = SHA512_BLOCK_SIZE,
2113 .cra_ctxsize = sizeof(struct sa_tfm_ctx),
2114 .cra_module = THIS_MODULE,
2115 .cra_init = sa_sha512_cra_init,
2116 .cra_exit = sa_sha_cra_exit,
2118 .halg.digestsize = SHA512_DIGEST_SIZE,
2119 .halg.statesize = sizeof(struct sa_sha_req_ctx) +
2120 sizeof(struct sha512_state),
2121 .init = sa_sha_init,
2122 .update = sa_sha_update,
2123 .final = sa_sha_final,
2124 .finup = sa_sha_finup,
2125 .digest = sa_sha_digest,
2126 .export = sa_sha_export,
2127 .import = sa_sha_import,
2131 .type = CRYPTO_ALG_TYPE_AEAD,
2134 .cra_name = "authenc(hmac(sha1),cbc(aes))",
2136 "authenc(hmac(sha1),cbc(aes))-sa2ul",
2137 .cra_blocksize = AES_BLOCK_SIZE,
2138 .cra_flags = CRYPTO_ALG_TYPE_AEAD |
2139 CRYPTO_ALG_KERN_DRIVER_ONLY |
2141 CRYPTO_ALG_NEED_FALLBACK,
2142 .cra_ctxsize = sizeof(struct sa_tfm_ctx),
2143 .cra_module = THIS_MODULE,
2144 .cra_priority = 3000,
2146 .ivsize = AES_BLOCK_SIZE,
2147 .maxauthsize = SHA1_DIGEST_SIZE,
2149 .init = sa_cra_init_aead_sha1,
2150 .exit = sa_exit_tfm_aead,
2151 .setkey = sa_aead_cbc_sha1_setkey,
2152 .setauthsize = sa_aead_setauthsize,
2153 .encrypt = sa_aead_encrypt,
2154 .decrypt = sa_aead_decrypt,
2158 .type = CRYPTO_ALG_TYPE_AEAD,
2161 .cra_name = "authenc(hmac(sha256),cbc(aes))",
2163 "authenc(hmac(sha256),cbc(aes))-sa2ul",
2164 .cra_blocksize = AES_BLOCK_SIZE,
2165 .cra_flags = CRYPTO_ALG_TYPE_AEAD |
2166 CRYPTO_ALG_KERN_DRIVER_ONLY |
2168 CRYPTO_ALG_NEED_FALLBACK,
2169 .cra_ctxsize = sizeof(struct sa_tfm_ctx),
2170 .cra_module = THIS_MODULE,
2172 .cra_priority = 3000,
2174 .ivsize = AES_BLOCK_SIZE,
2175 .maxauthsize = SHA256_DIGEST_SIZE,
2177 .init = sa_cra_init_aead_sha256,
2178 .exit = sa_exit_tfm_aead,
2179 .setkey = sa_aead_cbc_sha256_setkey,
2180 .setauthsize = sa_aead_setauthsize,
2181 .encrypt = sa_aead_encrypt,
2182 .decrypt = sa_aead_decrypt,
2187 /* Register the algorithms in crypto framework */
2188 static void sa_register_algos(const struct device *dev)
2194 for (i = 0; i < ARRAY_SIZE(sa_algs); i++) {
2195 type = sa_algs[i].type;
2196 if (type == CRYPTO_ALG_TYPE_SKCIPHER) {
2197 alg_name = sa_algs[i].alg.skcipher.base.cra_name;
2198 err = crypto_register_skcipher(&sa_algs[i].alg.skcipher);
2199 } else if (type == CRYPTO_ALG_TYPE_AHASH) {
2200 alg_name = sa_algs[i].alg.ahash.halg.base.cra_name;
2201 err = crypto_register_ahash(&sa_algs[i].alg.ahash);
2202 } else if (type == CRYPTO_ALG_TYPE_AEAD) {
2203 alg_name = sa_algs[i].alg.aead.base.cra_name;
2204 err = crypto_register_aead(&sa_algs[i].alg.aead);
2207 "un-supported crypto algorithm (%d)",
2213 dev_err(dev, "Failed to register '%s'\n", alg_name);
2215 sa_algs[i].registered = true;
2219 /* Unregister the algorithms in crypto framework */
2220 static void sa_unregister_algos(const struct device *dev)
2225 for (i = 0; i < ARRAY_SIZE(sa_algs); i++) {
2226 type = sa_algs[i].type;
2227 if (!sa_algs[i].registered)
2229 if (type == CRYPTO_ALG_TYPE_SKCIPHER)
2230 crypto_unregister_skcipher(&sa_algs[i].alg.skcipher);
2231 else if (type == CRYPTO_ALG_TYPE_AHASH)
2232 crypto_unregister_ahash(&sa_algs[i].alg.ahash);
2233 else if (type == CRYPTO_ALG_TYPE_AEAD)
2234 crypto_unregister_aead(&sa_algs[i].alg.aead);
2236 sa_algs[i].registered = false;
2240 static int sa_init_mem(struct sa_crypto_data *dev_data)
2242 struct device *dev = &dev_data->pdev->dev;
2243 /* Setup dma pool for security context buffers */
2244 dev_data->sc_pool = dma_pool_create("keystone-sc", dev,
2245 SA_CTX_MAX_SZ, 64, 0);
2246 if (!dev_data->sc_pool) {
2247 dev_err(dev, "Failed to create dma pool");
2254 static int sa_dma_init(struct sa_crypto_data *dd)
2257 struct dma_slave_config cfg;
2263 ret = dma_coerce_mask_and_coherent(dd->dev, DMA_BIT_MASK(48));
2267 dd->dma_rx1 = dma_request_chan(dd->dev, "rx1");
2268 if (IS_ERR(dd->dma_rx1))
2269 return dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx1),
2270 "Unable to request rx1 DMA channel\n");
2272 dd->dma_rx2 = dma_request_chan(dd->dev, "rx2");
2273 if (IS_ERR(dd->dma_rx2)) {
2274 dma_release_channel(dd->dma_rx1);
2275 return dev_err_probe(dd->dev, PTR_ERR(dd->dma_rx2),
2276 "Unable to request rx2 DMA channel\n");
2279 dd->dma_tx = dma_request_chan(dd->dev, "tx");
2280 if (IS_ERR(dd->dma_tx)) {
2281 ret = dev_err_probe(dd->dev, PTR_ERR(dd->dma_tx),
2282 "Unable to request tx DMA channel\n");
2286 memzero_explicit(&cfg, sizeof(cfg));
2288 cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
2289 cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
2290 cfg.src_maxburst = 4;
2291 cfg.dst_maxburst = 4;
2293 ret = dmaengine_slave_config(dd->dma_rx1, &cfg);
2295 dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",
2300 ret = dmaengine_slave_config(dd->dma_rx2, &cfg);
2302 dev_err(dd->dev, "can't configure IN dmaengine slave: %d\n",
2307 ret = dmaengine_slave_config(dd->dma_tx, &cfg);
2309 dev_err(dd->dev, "can't configure OUT dmaengine slave: %d\n",
2317 dma_release_channel(dd->dma_rx1);
2318 dma_release_channel(dd->dma_rx2);
2323 static int sa_link_child(struct device *dev, void *data)
2325 struct device *parent = data;
2327 device_link_add(dev, parent, DL_FLAG_AUTOPROBE_CONSUMER);
2332 static int sa_ul_probe(struct platform_device *pdev)
2334 struct device *dev = &pdev->dev;
2335 struct device_node *node = dev->of_node;
2336 struct resource *res;
2337 static void __iomem *saul_base;
2338 struct sa_crypto_data *dev_data;
2342 dev_data = devm_kzalloc(dev, sizeof(*dev_data), GFP_KERNEL);
2347 dev_data->dev = dev;
2348 dev_data->pdev = pdev;
2349 platform_set_drvdata(pdev, dev_data);
2350 dev_set_drvdata(sa_k3_dev, dev_data);
2352 pm_runtime_enable(dev);
2353 ret = pm_runtime_get_sync(dev);
2355 dev_err(&pdev->dev, "%s: failed to get sync: %d\n", __func__,
2360 sa_init_mem(dev_data);
2361 ret = sa_dma_init(dev_data);
2363 goto disable_pm_runtime;
2365 spin_lock_init(&dev_data->scid_lock);
2366 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2367 saul_base = devm_ioremap_resource(dev, res);
2369 dev_data->base = saul_base;
2370 val = SA_EEC_ENCSS_EN | SA_EEC_AUTHSS_EN | SA_EEC_CTXCACH_EN |
2371 SA_EEC_CPPI_PORT_IN_EN | SA_EEC_CPPI_PORT_OUT_EN |
2374 writel_relaxed(val, saul_base + SA_ENGINE_ENABLE_CONTROL);
2376 sa_register_algos(dev);
2378 ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
2382 device_for_each_child(&pdev->dev, &pdev->dev, sa_link_child);
2387 sa_unregister_algos(&pdev->dev);
2389 dma_release_channel(dev_data->dma_rx2);
2390 dma_release_channel(dev_data->dma_rx1);
2391 dma_release_channel(dev_data->dma_tx);
2393 dma_pool_destroy(dev_data->sc_pool);
2396 pm_runtime_put_sync(&pdev->dev);
2397 pm_runtime_disable(&pdev->dev);
2402 static int sa_ul_remove(struct platform_device *pdev)
2404 struct sa_crypto_data *dev_data = platform_get_drvdata(pdev);
2406 sa_unregister_algos(&pdev->dev);
2408 dma_release_channel(dev_data->dma_rx2);
2409 dma_release_channel(dev_data->dma_rx1);
2410 dma_release_channel(dev_data->dma_tx);
2412 dma_pool_destroy(dev_data->sc_pool);
2414 platform_set_drvdata(pdev, NULL);
2416 pm_runtime_put_sync(&pdev->dev);
2417 pm_runtime_disable(&pdev->dev);
2422 static const struct of_device_id of_match[] = {
2423 {.compatible = "ti,j721e-sa2ul",},
2424 {.compatible = "ti,am654-sa2ul",},
2427 MODULE_DEVICE_TABLE(of, of_match);
2429 static struct platform_driver sa_ul_driver = {
2430 .probe = sa_ul_probe,
2431 .remove = sa_ul_remove,
2433 .name = "saul-crypto",
2434 .of_match_table = of_match,
2437 module_platform_driver(sa_ul_driver);
2438 MODULE_LICENSE("GPL v2");