diff options
| -rw-r--r-- | drivers/crypto/caam/Kconfig | 3 | ||||
| -rw-r--r-- | drivers/crypto/caam/Makefile | 1 | ||||
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 1109 | ||||
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.c | 1302 | ||||
| -rw-r--r-- | drivers/crypto/caam/caamalg_desc.h | 97 |
5 files changed, 1440 insertions, 1072 deletions
diff --git a/drivers/crypto/caam/Kconfig b/drivers/crypto/caam/Kconfig index ebeada75ab2d..da24c5752c06 100644 --- a/drivers/crypto/caam/Kconfig +++ b/drivers/crypto/caam/Kconfig @@ -134,3 +134,6 @@ config CRYPTO_DEV_FSL_CAAM_DEBUG help Selecting this will enable printing of various debug information in the CAAM driver. + +config CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC + def_bool CRYPTO_DEV_FSL_CAAM_CRYPTO_API diff --git a/drivers/crypto/caam/Makefile b/drivers/crypto/caam/Makefile index 08bf5515ae8a..6554742f357e 100644 --- a/drivers/crypto/caam/Makefile +++ b/drivers/crypto/caam/Makefile @@ -8,6 +8,7 @@ endif obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM) += caam.o obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_JR) += caam_jr.o obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API) += caamalg.o +obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_CRYPTO_API_DESC) += caamalg_desc.o obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_AHASH_API) += caamhash.o obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_RNG_API) += caamrng.o obj-$(CONFIG_CRYPTO_DEV_FSL_CAAM_PKC_API) += caam_pkc.o diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 9cb95f5b2eb3..78b0b7c17205 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -2,6 +2,7 @@ * caam - Freescale FSL CAAM support for crypto API * * Copyright 2008-2011 Freescale Semiconductor, Inc. + * Copyright 2016 NXP * * Based on talitos crypto API driver. * @@ -53,6 +54,7 @@ #include "error.h" #include "sg_sw_sec4.h" #include "key_gen.h" +#include "caamalg_desc.h" /* * crypto alg @@ -69,37 +71,6 @@ #define AUTHENC_DESC_JOB_IO_LEN (AEAD_DESC_JOB_IO_LEN + \ CAAM_CMD_SZ * 5) -/* length of descriptors text */ -#define DESC_AEAD_BASE (4 * CAAM_CMD_SZ) -#define DESC_AEAD_ENC_LEN (DESC_AEAD_BASE + 11 * CAAM_CMD_SZ) -#define DESC_AEAD_DEC_LEN (DESC_AEAD_BASE + 15 * CAAM_CMD_SZ) -#define DESC_AEAD_GIVENC_LEN (DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ) - -/* Note: Nonce is counted in enckeylen */ -#define DESC_AEAD_CTR_RFC3686_LEN (4 * CAAM_CMD_SZ) - -#define DESC_AEAD_NULL_BASE (3 * CAAM_CMD_SZ) -#define DESC_AEAD_NULL_ENC_LEN (DESC_AEAD_NULL_BASE + 11 * CAAM_CMD_SZ) -#define DESC_AEAD_NULL_DEC_LEN (DESC_AEAD_NULL_BASE + 13 * CAAM_CMD_SZ) - -#define DESC_GCM_BASE (3 * CAAM_CMD_SZ) -#define DESC_GCM_ENC_LEN (DESC_GCM_BASE + 16 * CAAM_CMD_SZ) -#define DESC_GCM_DEC_LEN (DESC_GCM_BASE + 12 * CAAM_CMD_SZ) - -#define DESC_RFC4106_BASE (3 * CAAM_CMD_SZ) -#define DESC_RFC4106_ENC_LEN (DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ) -#define DESC_RFC4106_DEC_LEN (DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ) - -#define DESC_RFC4543_BASE (3 * CAAM_CMD_SZ) -#define DESC_RFC4543_ENC_LEN (DESC_RFC4543_BASE + 11 * CAAM_CMD_SZ) -#define DESC_RFC4543_DEC_LEN (DESC_RFC4543_BASE + 12 * CAAM_CMD_SZ) - -#define DESC_ABLKCIPHER_BASE (3 * CAAM_CMD_SZ) -#define DESC_ABLKCIPHER_ENC_LEN (DESC_ABLKCIPHER_BASE + \ - 20 * CAAM_CMD_SZ) -#define DESC_ABLKCIPHER_DEC_LEN (DESC_ABLKCIPHER_BASE + \ - 15 * CAAM_CMD_SZ) - #define DESC_MAX_USED_BYTES (CAAM_DESC_BYTES_MAX - DESC_JOB_IO_LEN) #define DESC_MAX_USED_LEN (DESC_MAX_USED_BYTES / CAAM_CMD_SZ) @@ -159,52 +130,6 @@ struct caam_aead_alg { bool registered; }; -/* Set DK bit in class 1 operation if shared */ -static inline void append_dec_op1(u32 *desc, u32 type) -{ - u32 *jump_cmd, *uncond_jump_cmd; - - /* DK bit is valid only for AES */ - if ((type & OP_ALG_ALGSEL_MASK) != OP_ALG_ALGSEL_AES) { - append_operation(desc, type | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT); - return; - } - - jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD); - append_operation(desc, type | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT); - uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL); - set_jump_tgt_here(desc, jump_cmd); - append_operation(desc, type | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_AAI_DK); - set_jump_tgt_here(desc, uncond_jump_cmd); -} - -/* - * For aead functions, read payload and write payload, - * both of which are specified in req->src and req->dst - */ -static inline void aead_append_src_dst(u32 *desc, u32 msg_type) -{ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | - KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH); -} - -/* - * For ablkcipher encrypt and decrypt, read from req->src and - * write to req->dst - */ -static inline void ablkcipher_append_src_dst(u32 *desc) -{ - append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | - KEY_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); -} - /* * per-session context */ @@ -223,66 +148,10 @@ struct caam_ctx { unsigned int authsize; }; -static void init_sh_desc_key_aead(u32 *desc, struct caam_ctx *ctx, - bool is_rfc3686) -{ - u32 *key_jump_cmd; - unsigned int enckeylen = ctx->cdata.keylen; - - /* Note: Context registers are saved. */ - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* - * RFC3686 specific: - * | ctx->key = {AUTH_KEY, ENC_KEY, NONCE} - * | enckeylen = encryption key size + nonce size - */ - if (is_rfc3686) - enckeylen -= CTR_RFC3686_NONCE_SIZE; - - if (ctx->adata.key_inline) - append_key_as_imm(desc, (void *)ctx->adata.key, - ctx->adata.keylen_pad, ctx->adata.keylen, - CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC); - else - append_key(desc, ctx->adata.key, ctx->adata.keylen, CLASS_2 | - KEY_DEST_MDHA_SPLIT | KEY_ENC); - - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, enckeylen, - enckeylen, CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, enckeylen, CLASS_1 | - KEY_DEST_CLASS_REG); - - /* Load Counter into CONTEXT1 reg */ - if (is_rfc3686) { - u32 *nonce; - - nonce = (u32 *)((void *)ctx->key + ctx->adata.keylen_pad + - enckeylen); - append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, - LDST_CLASS_IND_CCB | - LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); - append_move(desc, - MOVE_SRC_OUTFIFO | - MOVE_DEST_CLASS1CTX | - (16 << MOVE_OFFSET_SHIFT) | - (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); - } - - set_jump_tgt_here(desc, key_jump_cmd); -} - static int aead_null_set_sh_desc(struct crypto_aead *aead) { struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; - u32 *key_jump_cmd, *jump_cmd, *read_move_cmd, *write_move_cmd; u32 *desc; int rem_bytes = CAAM_DESC_BYTES_MAX - AEAD_DESC_JOB_IO_LEN - ctx->adata.keylen_pad; @@ -301,58 +170,7 @@ static int aead_null_set_sh_desc(struct crypto_aead *aead) /* aead_encrypt shared descriptor */ desc = ctx->sh_desc_enc; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - if (ctx->adata.key_inline) - append_key_as_imm(desc, (void *)ctx->adata.key, - ctx->adata.keylen_pad, ctx->adata.keylen, - CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC); - else - append_key(desc, ctx->adata.key, ctx->adata.keylen, CLASS_2 | - KEY_DEST_MDHA_SPLIT | KEY_ENC); - set_jump_tgt_here(desc, key_jump_cmd); - - /* assoclen + cryptlen = seqinlen */ - append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* Prepare to read and write cryptlen + assoclen bytes */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* - * MOVE_LEN opcode is not available in all SEC HW revisions, - * thus need to do some magic, i.e. self-patch the descriptor - * buffer. - */ - read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | - MOVE_DEST_MATH3 | - (0x6 << MOVE_LEN_SHIFT)); - write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | - MOVE_DEST_DESCBUF | - MOVE_WAITCOMP | - (0x8 << MOVE_LEN_SHIFT)); - - /* Class 2 operation */ - append_operation(desc, ctx->adata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Read and write cryptlen bytes */ - aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); - - set_move_tgt_here(desc, read_move_cmd); - set_move_tgt_here(desc, write_move_cmd); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | - MOVE_AUX_LS); - - /* Write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_aead_null_encap(desc, &ctx->adata, ctx->authsize); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -360,12 +178,6 @@ static int aead_null_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "aead null enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif /* * Job Descriptor and Shared Descriptors @@ -379,68 +191,9 @@ static int aead_null_set_sh_desc(struct crypto_aead *aead) ctx->adata.key = ctx->key_dma; } - desc = ctx->sh_desc_dec; - /* aead_decrypt shared descriptor */ - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - if (ctx->adata.key_inline) - append_key_as_imm(desc, (void *)ctx->adata.key, - ctx->adata.keylen_pad, ctx->adata.keylen, - CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC); - else - append_key(desc, ctx->adata.key, ctx->adata.keylen, CLASS_2 | - KEY_DEST_MDHA_SPLIT | KEY_ENC); - set_jump_tgt_here(desc, key_jump_cmd); - - /* Class 2 operation */ - append_operation(desc, ctx->adata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_ICV_ON); - - /* assoclen + cryptlen = seqoutlen */ - append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* Prepare to read and write cryptlen + assoclen bytes */ - append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ); - - /* - * MOVE_LEN opcode is not available in all SEC HW revisions, - * thus need to do some magic, i.e. self-patch the descriptor - * buffer. - */ - read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | - MOVE_DEST_MATH2 | - (0x6 << MOVE_LEN_SHIFT)); - write_move_cmd = append_move(desc, MOVE_SRC_MATH2 | - MOVE_DEST_DESCBUF | - MOVE_WAITCOMP | - (0x8 << MOVE_LEN_SHIFT)); - - /* Read and write cryptlen bytes */ - aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); - - /* - * Insert a NOP here, since we need at least 4 instructions between - * code patching the descriptor buffer and the location being patched. - */ - jump_cmd = append_jump(desc, JUMP_TEST_ALL); - set_jump_tgt_here(desc, jump_cmd); - - set_move_tgt_here(desc, read_move_cmd); - set_move_tgt_here(desc, write_move_cmd); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | - MOVE_AUX_LS); - append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); - - /* Load ICV */ - append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS2 | - FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); - + desc = ctx->sh_desc_dec; + cnstr_shdsc_aead_null_decap(desc, &ctx->adata, ctx->authsize); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -448,12 +201,6 @@ static int aead_null_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "aead null dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif return 0; } @@ -465,9 +212,8 @@ static int aead_set_sh_desc(struct crypto_aead *aead) unsigned int ivsize = crypto_aead_ivsize(aead); struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; - u32 geniv, moveiv; u32 ctx1_iv_off = 0; - u32 *desc; + u32 *desc, *nonce = NULL; u32 inl_mask; unsigned int data_len[2]; const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) == @@ -493,8 +239,11 @@ static int aead_set_sh_desc(struct crypto_aead *aead) * RFC3686 specific: * CONTEXT1[255:128] = {NONCE, IV, COUNTER} */ - if (is_rfc3686) + if (is_rfc3686) { ctx1_iv_off = 16 + CTR_RFC3686_NONCE_SIZE; + nonce = (u32 *)((void *)ctx->key + ctx->adata.keylen_pad + + ctx->cdata.keylen - CTR_RFC3686_NONCE_SIZE); + } data_len[0] = ctx->adata.keylen_pad; data_len[1] = ctx->cdata.keylen; @@ -527,45 +276,8 @@ static int aead_set_sh_desc(struct crypto_aead *aead) /* aead_encrypt shared descriptor */ desc = ctx->sh_desc_enc; - - /* Note: Context registers are saved. */ - init_sh_desc_key_aead(desc, ctx, is_rfc3686); - - /* Class 2 operation */ - append_operation(desc, ctx->adata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Read and write assoclen bytes */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* Skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* read assoc before reading payload */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | - FIFOLDST_VLF); - - /* Load Counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Read and write cryptlen bytes */ - append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2); - - /* Write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_aead_encap(desc, &ctx->cdata, &ctx->adata, ctx->authsize, + is_rfc3686, nonce, ctx1_iv_off); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -573,11 +285,6 @@ static int aead_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "aead enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif skip_enc: /* @@ -605,59 +312,9 @@ skip_enc: /* aead_decrypt shared descriptor */ desc = ctx->sh_desc_dec; - - /* Note: Context registers are saved. */ - init_sh_desc_key_aead(desc, ctx, is_rfc3686); - - /* Class 2 operation */ - append_operation(desc, ctx->adata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_ICV_ON); - - /* Read and write assoclen bytes */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - if (alg->caam.geniv) - append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM, ivsize); - else - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* Skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* read assoc before reading payload */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | - KEY_VLF); - - if (alg->caam.geniv) { - append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - (ctx1_iv_off << LDST_OFFSET_SHIFT)); - append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO | - (ctx1_iv_off << MOVE_OFFSET_SHIFT) | ivsize); - } - - /* Load Counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - /* Choose operation */ - if (ctr_mode) - append_operation(desc, ctx->cdata.algtype | - OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT); - else - append_dec_op1(desc, ctx->cdata.algtype); - - /* Read and write cryptlen bytes */ - append_math_add(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - aead_append_src_dst(desc, FIFOLD_TYPE_MSG); - - /* Load ICV */ - append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS2 | - FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); - + cnstr_shdsc_aead_decap(desc, &ctx->cdata, &ctx->adata, ivsize, + ctx->authsize, alg->caam.geniv, is_rfc3686, + nonce, ctx1_iv_off); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -665,11 +322,6 @@ skip_enc: dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "aead dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif if (!alg->caam.geniv) goto skip_givenc; @@ -699,83 +351,9 @@ skip_enc: /* aead_givencrypt shared descriptor */ desc = ctx->sh_desc_enc; - - /* Note: Context registers are saved. */ - init_sh_desc_key_aead(desc, ctx, is_rfc3686); - - if (is_rfc3686) - goto copy_iv; - - /* Generate IV */ - geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | - NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | - NFIFOENTRY_PTYPE_RND | (ivsize << NFIFOENTRY_DLEN_SHIFT); - append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | - LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - append_move(desc, MOVE_WAITCOMP | - MOVE_SRC_INFIFO | MOVE_DEST_CLASS1CTX | - (ctx1_iv_off << MOVE_OFFSET_SHIFT) | - (ivsize << MOVE_LEN_SHIFT)); - append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); - -copy_iv: - /* Copy IV to class 1 context */ - append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_OUTFIFO | - (ctx1_iv_off << MOVE_OFFSET_SHIFT) | - (ivsize << MOVE_LEN_SHIFT)); - - /* Return to encryption */ - append_operation(desc, ctx->adata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Read and write assoclen bytes */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* Skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* read assoc before reading payload */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | - KEY_VLF); - - /* Copy iv from outfifo to class 2 fifo */ - moveiv = NFIFOENTRY_STYPE_OFIFO | NFIFOENTRY_DEST_CLASS2 | - NFIFOENTRY_DTYPE_MSG | (ivsize << NFIFOENTRY_DLEN_SHIFT); - append_load_imm_u32(desc, moveiv, LDST_CLASS_IND_CCB | - LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); - append_load_imm_u32(desc, ivsize, LDST_CLASS_2_CCB | - LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM); - - /* Load Counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Will write ivsize + cryptlen */ - append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* Not need to reload iv */ - append_seq_fifo_load(desc, ivsize, - FIFOLD_CLASS_SKIP); - - /* Will read cryptlen */ - append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF | - FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH); - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); - - /* Write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_2_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_aead_givencap(desc, &ctx->cdata, &ctx->adata, ivsize, + ctx->authsize, is_rfc3686, nonce, + ctx1_iv_off); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -783,11 +361,6 @@ copy_iv: dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "aead givenc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif skip_givenc: return 0; @@ -808,8 +381,6 @@ static int gcm_set_sh_desc(struct crypto_aead *aead) { struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; - u32 *key_jump_cmd, *zero_payload_jump_cmd, - *zero_assoc_jump_cmd1, *zero_assoc_jump_cmd2; u32 *desc; int rem_bytes = CAAM_DESC_BYTES_MAX - GCM_DESC_JOB_IO_LEN - ctx->cdata.keylen; @@ -831,78 +402,7 @@ static int gcm_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_enc; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* skip key loading if they are loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD | JUMP_COND_SELF); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* if assoclen + cryptlen is ZERO, skip to ICV write */ - append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - zero_assoc_jump_cmd2 = append_jump(desc, JUMP_TEST_ALL | - JUMP_COND_MATH_Z); - - /* if assoclen is ZERO, skip reading the assoc data */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | - JUMP_COND_MATH_Z); - - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* cryptlen = seqinlen - assoclen */ - append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG3, CAAM_CMD_SZ); - - /* if cryptlen is ZERO jump to zero-payload commands */ - zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | - JUMP_COND_MATH_Z); - - /* read assoc data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); - set_jump_tgt_here(desc, zero_assoc_jump_cmd1); - - append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* write encrypted data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); - - /* read payload data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); - - /* jump the zero-payload commands */ - append_jump(desc, JUMP_TEST_ALL | 2); - - /* zero-payload commands */ - set_jump_tgt_here(desc, zero_payload_jump_cmd); - - /* read assoc data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST1); - - /* There is no input data */ - set_jump_tgt_here(desc, zero_assoc_jump_cmd2); - - /* write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_gcm_encap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -910,11 +410,6 @@ static int gcm_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "gcm enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif /* * Job Descriptor and Shared Descriptors @@ -929,65 +424,7 @@ static int gcm_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_dec; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* skip key loading if they are loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | - JUMP_TEST_ALL | JUMP_COND_SHRD | - JUMP_COND_SELF); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_ICV_ON); - - /* if assoclen is ZERO, skip reading the assoc data */ - append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); - zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | - JUMP_COND_MATH_Z); - - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* read assoc data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); - - set_jump_tgt_here(desc, zero_assoc_jump_cmd1); - - /* cryptlen = seqoutlen - assoclen */ - append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* jump to zero-payload command if cryptlen is zero */ - zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | - JUMP_COND_MATH_Z); - - append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* store encrypted data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); - - /* read payload data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); - - /* zero-payload command */ - set_jump_tgt_here(desc, zero_payload_jump_cmd); - - /* read ICV */ - append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS1 | - FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); - + cnstr_shdsc_gcm_decap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -995,11 +432,6 @@ static int gcm_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "gcm dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif return 0; } @@ -1018,7 +450,6 @@ static int rfc4106_set_sh_desc(struct crypto_aead *aead) { struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; - u32 *key_jump_cmd; u32 *desc; int rem_bytes = CAAM_DESC_BYTES_MAX - GCM_DESC_JOB_IO_LEN - ctx->cdata.keylen; @@ -1040,58 +471,7 @@ static int rfc4106_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_enc; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip key loading if it is loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* Read assoc data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); - - /* Skip IV */ - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); - - /* Will read cryptlen bytes */ - append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); - - /* Skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* cryptlen = seqoutlen - assoclen */ - append_math_sub(desc, VARSEQOUTLEN, VARSEQINLEN, REG0, CAAM_CMD_SZ); - - /* Write encrypted data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); - - /* Read payload data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); - - /* Write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_rfc4106_encap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1099,11 +479,6 @@ static int rfc4106_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "rfc4106 enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif /* * Job Descriptor and Shared Descriptors @@ -1118,58 +493,7 @@ static int rfc4106_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_dec; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip key loading if it is loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | - JUMP_TEST_ALL | JUMP_COND_SHRD); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_ICV_ON); - - append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); - append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); - - /* Read assoc data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); - - /* Skip IV */ - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); - - /* Will read cryptlen bytes */ - append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG3, CAAM_CMD_SZ); - - /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); - - /* Skip assoc data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); - - /* Will write cryptlen bytes */ - append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* Store payload data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); - - /* Read encrypted data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | - FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); - - /* Read ICV */ - append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS1 | - FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); - + cnstr_shdsc_rfc4106_decap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1177,11 +501,6 @@ static int rfc4106_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "rfc4106 dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif return 0; } @@ -1201,8 +520,6 @@ static int rfc4543_set_sh_desc(struct crypto_aead *aead) { struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; - u32 *key_jump_cmd; - u32 *read_move_cmd, *write_move_cmd; u32 *desc; int rem_bytes = CAAM_DESC_BYTES_MAX - GCM_DESC_JOB_IO_LEN - ctx->cdata.keylen; @@ -1224,57 +541,7 @@ static int rfc4543_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_enc; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip key loading if it is loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* assoclen + cryptlen = seqinlen */ - append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* - * MOVE_LEN opcode is not available in all SEC HW revisions, - * thus need to do some magic, i.e. self-patch the descriptor - * buffer. - */ - read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | - (0x6 << MOVE_LEN_SHIFT)); - write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | - (0x8 << MOVE_LEN_SHIFT)); - - /* Will read assoclen + cryptlen bytes */ - append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* Will write assoclen + cryptlen bytes */ - append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); - - /* Read and write assoclen + cryptlen bytes */ - aead_append_src_dst(desc, FIFOLD_TYPE_AAD); - - set_move_tgt_here(desc, read_move_cmd); - set_move_tgt_here(desc, write_move_cmd); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - /* Move payload data to OFIFO */ - append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); - - /* Write ICV */ - append_seq_store(desc, ctx->authsize, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT); - + cnstr_shdsc_rfc4543_encap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1282,11 +549,6 @@ static int rfc4543_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "rfc4543 enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif /* * Job Descriptor and Shared Descriptors @@ -1301,62 +563,7 @@ static int rfc4543_set_sh_desc(struct crypto_aead *aead) } desc = ctx->sh_desc_dec; - - init_sh_desc(desc, HDR_SHARE_SERIAL); - - /* Skip key loading if it is loaded due to sharing */ - key_jump_cmd = append_jump(desc, JUMP_JSL | - JUMP_TEST_ALL | JUMP_COND_SHRD); - if (ctx->cdata.key_inline) - append_key_as_imm(desc, (void *)ctx->cdata.key, - ctx->cdata.keylen, ctx->cdata.keylen, - CLASS_1 | KEY_DEST_CLASS_REG); - else - append_key(desc, ctx->cdata.key, ctx->cdata.keylen, CLASS_1 | - KEY_DEST_CLASS_REG); - set_jump_tgt_here(desc, key_jump_cmd); - - /* Class 1 operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_DECRYPT | OP_ALG_ICV_ON); - - /* assoclen + cryptlen = seqoutlen */ - append_math_sub(desc, REG3, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* - * MOVE_LEN opcode is not available in all SEC HW revisions, - * thus need to do some magic, i.e. self-patch the descriptor - * buffer. - */ - read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | - (0x6 << MOVE_LEN_SHIFT)); - write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | - (0x8 << MOVE_LEN_SHIFT)); - - /* Will read assoclen + cryptlen bytes */ - append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* Will write assoclen + cryptlen bytes */ - append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); - - /* Store payload data */ - append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); - - /* In-snoop assoclen + cryptlen data */ - append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLDST_VLF | - FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST2FLUSH1); - - set_move_tgt_here(desc, read_move_cmd); - set_move_tgt_here(desc, write_move_cmd); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - /* Move payload data to OFIFO */ - append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); - append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); - - /* Read ICV */ - append_seq_fifo_load(desc, ctx->authsize, FIFOLD_CLASS_CLASS1 | - FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); - + cnstr_shdsc_rfc4543_decap(desc, &ctx->cdata, ctx->authsize); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1364,11 +571,6 @@ static int rfc4543_set_sh_desc(struct crypto_aead *aead) dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, "rfc4543 dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif return 0; } @@ -1569,21 +771,18 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, const u8 *key, unsigned int keylen) { struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); - struct ablkcipher_tfm *crt = &ablkcipher->base.crt_ablkcipher; struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablkcipher); const char *alg_name = crypto_tfm_alg_name(tfm); struct device *jrdev = ctx->jrdev; - int ret = 0; - u32 *key_jump_cmd; + unsigned int ivsize = crypto_ablkcipher_ivsize(ablkcipher); u32 *desc; - u8 *nonce; - u32 geniv; u32 ctx1_iv_off = 0; const bool ctr_mode = ((ctx->cdata.algtype & OP_ALG_AAI_MASK) == OP_ALG_AAI_CTR_MOD128); const bool is_rfc3686 = (ctr_mode && (strstr(alg_name, "rfc3686") != NULL)); + memcpy(ctx->key, key, keylen); #ifdef DEBUG print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1); @@ -1606,7 +805,6 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, keylen -= CTR_RFC3686_NONCE_SIZE; } - memcpy(ctx->key, key, keylen); ctx->key_dma = dma_map_single(jrdev, ctx->key, keylen, DMA_TO_DEVICE); if (dma_mapping_error(jrdev, ctx->key_dma)) { @@ -1619,48 +817,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, /* ablkcipher_encrypt shared descriptor */ desc = ctx->sh_desc_enc; - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* Load class1 key only */ - append_key_as_imm(desc, (void *)ctx->cdata.key, ctx->cdata.keylen, - ctx->cdata.keylen, CLASS_1 | KEY_DEST_CLASS_REG); - - /* Load nonce into CONTEXT1 reg */ - if (is_rfc3686) { - nonce = (u8 *)key + keylen; - append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, - LDST_CLASS_IND_CCB | - LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); - append_move(desc, MOVE_WAITCOMP | - MOVE_SRC_OUTFIFO | - MOVE_DEST_CLASS1CTX | - (16 << MOVE_OFFSET_SHIFT) | - (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); - } - - set_jump_tgt_here(desc, key_jump_cmd); - - /* Load iv */ - append_seq_load(desc, crt->ivsize, LDST_SRCDST_BYTE_CONTEXT | - LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); - - /* Load counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - /* Load operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Perform operation */ - ablkcipher_append_src_dst(desc); - + cnstr_shdsc_ablkcipher_encap(desc, &ctx->cdata, ivsize, is_rfc3686, + ctx1_iv_off); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1668,60 +826,11 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "ablkcipher enc shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif + /* ablkcipher_decrypt shared descriptor */ desc = ctx->sh_desc_dec; - - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* Load class1 key only */ - append_key_as_imm(desc, (void *)ctx->cdata.key, ctx->cdata.keylen, - ctx->cdata.keylen, CLASS_1 | KEY_DEST_CLASS_REG); - - /* Load nonce into CONTEXT1 reg */ - if (is_rfc3686) { - nonce = (u8 *)key + keylen; - append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, - LDST_CLASS_IND_CCB | - LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); - append_move(desc, MOVE_WAITCOMP | - MOVE_SRC_OUTFIFO | - MOVE_DEST_CLASS1CTX | - (16 << MOVE_OFFSET_SHIFT) | - (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); - } - - set_jump_tgt_here(desc, key_jump_cmd); - - /* load IV */ - append_seq_load(desc, crt->ivsize, LDST_SRCDST_BYTE_CONTEXT | - LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); - - /* Load counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - /* Choose operation */ - if (ctr_mode) - append_operation(desc, ctx->cdata.algtype | - OP_ALG_AS_INITFINAL | OP_ALG_DECRYPT); - else - append_dec_op1(desc, ctx->cdata.algtype); - - /* Perform operation */ - ablkcipher_append_src_dst(desc); - + cnstr_shdsc_ablkcipher_decap(desc, &ctx->cdata, ivsize, is_rfc3686, + ctx1_iv_off); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1730,75 +839,10 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "ablkcipher dec shdesc@"__stringify(__LINE__)": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif /* ablkcipher_givencrypt shared descriptor */ desc = ctx->sh_desc_givenc; - - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* Load class1 key only */ - append_key_as_imm(desc, (void *)ctx->cdata.key, ctx->cdata.keylen, - ctx->cdata.keylen, CLASS_1 | KEY_DEST_CLASS_REG); - - /* Load Nonce into CONTEXT1 reg */ - if (is_rfc3686) { - nonce = (u8 *)key + keylen; - append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, - LDST_CLASS_IND_CCB | - LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); - append_move(desc, MOVE_WAITCOMP | - MOVE_SRC_OUTFIFO | - MOVE_DEST_CLASS1CTX | - (16 << MOVE_OFFSET_SHIFT) | - (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); - } - set_jump_tgt_here(desc, key_jump_cmd); - - /* Generate IV */ - geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | - NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | - NFIFOENTRY_PTYPE_RND | (crt->ivsize << NFIFOENTRY_DLEN_SHIFT); - append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | - LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); - append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); - append_move(desc, MOVE_WAITCOMP | - MOVE_SRC_INFIFO | - MOVE_DEST_CLASS1CTX | - (crt->ivsize << MOVE_LEN_SHIFT) | - (ctx1_iv_off << MOVE_OFFSET_SHIFT)); - append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); - - /* Copy generated IV to memory */ - append_seq_store(desc, crt->ivsize, - LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | - (ctx1_iv_off << LDST_OFFSET_SHIFT)); - - /* Load Counter into CONTEXT1 reg */ - if (is_rfc3686) - append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << - LDST_OFFSET_SHIFT)); - - if (ctx1_iv_off) - append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NCP | - (1 << JUMP_OFFSET_SHIFT)); - - /* Load operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Perform operation */ - ablkcipher_append_src_dst(desc); - + cnstr_shdsc_ablkcipher_givencap(desc, &ctx->cdata, ivsize, is_rfc3686, + ctx1_iv_off); ctx->sh_desc_givenc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); @@ -1806,14 +850,8 @@ static int ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "ablkcipher givenc shdesc@" __stringify(__LINE__) ": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, - desc_bytes(desc), 1); -#endif - return ret; + return 0; } static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, @@ -1821,8 +859,7 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, { struct caam_ctx *ctx = crypto_ablkcipher_ctx(ablkcipher); struct device *jrdev = ctx->jrdev; - u32 *key_jump_cmd, *desc; - __be64 sector_size = cpu_to_be64(512); + u32 *desc; if (keylen != 2 * AES_MIN_KEY_SIZE && keylen != 2 * AES_MAX_KEY_SIZE) { crypto_ablkcipher_set_flags(ablkcipher, @@ -1843,84 +880,17 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, /* xts_ablkcipher_encrypt shared descriptor */ desc = ctx->sh_desc_enc; - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* Load class1 keys only */ - append_key_as_imm(desc, (void *)ctx->cdata.key, ctx->cdata.keylen, - ctx->cdata.keylen, CLASS_1 | KEY_DEST_CLASS_REG); - - /* Load sector size with index 40 bytes (0x28) */ - append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - (0x28 << LDST_OFFSET_SHIFT)); - - set_jump_tgt_here(desc, key_jump_cmd); - - /* - * create sequence for loading the sector index - * Upper 8B of IV - will be used as sector index - * Lower 8B of IV - will be discarded - */ - append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | - (0x20 << LDST_OFFSET_SHIFT)); - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); - - /* Load operation */ - append_operation(desc, ctx->cdata.algtype | OP_ALG_AS_INITFINAL | - OP_ALG_ENCRYPT); - - /* Perform operation */ - ablkcipher_append_src_dst(desc); - + cnstr_shdsc_xts_ablkcipher_encap(desc, &ctx->cdata); ctx->sh_desc_enc_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); if (dma_mapping_error(jrdev, ctx->sh_desc_enc_dma)) { dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "xts ablkcipher enc shdesc@" __stringify(__LINE__) ": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); -#endif /* xts_ablkcipher_decrypt shared descriptor */ desc = ctx->sh_desc_dec; - - init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); - /* Skip if already shared */ - key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | - JUMP_COND_SHRD); - - /* Load class1 key only */ - append_key_as_imm(desc, (void *)ctx->cdata.key, ctx->cdata.keylen, - ctx->cdata.keylen, CLASS_1 | KEY_DEST_CLASS_REG); - - /* Load sector size with index 40 bytes (0x28) */ - append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | - LDST_SRCDST_BYTE_CONTEXT | - (0x28 << LDST_OFFSET_SHIFT)); - - set_jump_tgt_here(desc, key_jump_cmd); - - /* - * create sequence for loading the sector index - * Upper 8B of IV - will be used as sector index - * Lower 8B of IV - will be discarded - */ - append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | - (0x20 << LDST_OFFSET_SHIFT)); - append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); - - /* Load operation */ - append_dec_op1(desc, ctx->cdata.algtype); - - /* Perform operation */ - ablkcipher_append_src_dst(desc); - + cnstr_shdsc_xts_ablkcipher_decap(desc, &ctx->cdata); ctx->sh_desc_dec_dma = dma_map_single(jrdev, desc, desc_bytes(desc), DMA_TO_DEVICE); if (dma_mapping_error(jrdev, ctx->sh_desc_dec_dma)) { @@ -1929,11 +899,6 @@ static int xts_ablkcipher_setkey(struct crypto_ablkcipher *ablkcipher, dev_err(jrdev, "unable to map shared descriptor\n"); return -ENOMEM; } -#ifdef DEBUG - print_hex_dump(KERN_ERR, - "xts ablkcipher dec shdesc@" __stringify(__LINE__) ": ", - DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); -#endif return 0; } diff --git a/drivers/crypto/caam/caamalg_desc.c b/drivers/crypto/caam/caamalg_desc.c new file mode 100644 index 000000000000..fa2479d9da24 --- /dev/null +++ b/drivers/crypto/caam/caamalg_desc.c @@ -0,0 +1,1302 @@ +/* + * Shared descriptors for aead, ablkcipher algorithms + * + * Copyright 2016 NXP + */ + +#include "compat.h" +#include "desc_constr.h" +#include "caamalg_desc.h" + +/* + * For aead functions, read payload and write payload, + * both of which are specified in req->src and req->dst + */ +static inline void aead_append_src_dst(u32 *desc, u32 msg_type) +{ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | + KEY_VLF | msg_type | FIFOLD_TYPE_LASTBOTH); +} + +/* Set DK bit in class 1 operation if shared */ +static inline void append_dec_op1(u32 *desc, u32 type) +{ + u32 *jump_cmd, *uncond_jump_cmd; + + /* DK bit is valid only for AES */ + if ((type & OP_ALG_ALGSEL_MASK) != OP_ALG_ALGSEL_AES) { + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + return; + } + + jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD); + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + uncond_jump_cmd = append_jump(desc, JUMP_TEST_ALL); + set_jump_tgt_here(desc, jump_cmd); + append_operation(desc, type | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_AAI_DK); + set_jump_tgt_here(desc, uncond_jump_cmd); +} + +/** + * cnstr_shdsc_aead_null_encap - IPSec ESP encapsulation shared descriptor + * (non-protocol) with no (null) encryption. + * @desc: pointer to buffer used for descriptor construction + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @icvsize: integrity check value (ICV) size (truncated or full) + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (adata->key_inline) + append_key_as_imm(desc, (void *)adata->key, adata->keylen_pad, + adata->keylen, CLASS_2 | KEY_DEST_MDHA_SPLIT | + KEY_ENC); + else + append_key(desc, adata->key, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + set_jump_tgt_here(desc, key_jump_cmd); + + /* assoclen + cryptlen = seqinlen */ + append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Prepare to read and write cryptlen + assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | + MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | + MOVE_DEST_DESCBUF | + MOVE_WAITCOMP | + (0x8 << MOVE_LEN_SHIFT)); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | + MOVE_AUX_LS); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead null enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_null_encap); + +/** + * cnstr_shdsc_aead_null_decap - IPSec ESP decapsulation shared descriptor + * (non-protocol) with no (null) decryption. + * @desc: pointer to buffer used for descriptor construction + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @icvsize: integrity check value (ICV) size (truncated or full) + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd, *jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (adata->key_inline) + append_key_as_imm(desc, (void *)adata->key, adata->keylen_pad, + adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + else + append_key(desc, adata->key, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + /* assoclen + cryptlen = seqoutlen */ + append_math_sub(desc, REG2, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Prepare to read and write cryptlen + assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG2, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG2, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | + MOVE_DEST_MATH2 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH2 | + MOVE_DEST_DESCBUF | + MOVE_WAITCOMP | + (0x8 << MOVE_LEN_SHIFT)); + + /* Read and write cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* + * Insert a NOP here, since we need at least 4 instructions between + * code patching the descriptor buffer and the location being patched. + */ + jump_cmd = append_jump(desc, JUMP_TEST_ALL); + set_jump_tgt_here(desc, jump_cmd); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO | + MOVE_AUX_LS); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Load ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead null dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_null_decap); + +static void init_sh_desc_key_aead(u32 * const desc, + struct alginfo * const cdata, + struct alginfo * const adata, + const bool is_rfc3686, u32 *nonce) +{ + u32 *key_jump_cmd; + unsigned int enckeylen = cdata->keylen; + + /* Note: Context registers are saved. */ + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* + * RFC3686 specific: + * | key = {AUTH_KEY, ENC_KEY, NONCE} + * | enckeylen = encryption key size + nonce size + */ + if (is_rfc3686) + enckeylen -= CTR_RFC3686_NONCE_SIZE; + + if (adata->key_inline) + append_key_as_imm(desc, (void *)adata->key, adata->keylen_pad, + adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + else + append_key(desc, adata->key, adata->keylen, CLASS_2 | + KEY_DEST_MDHA_SPLIT | KEY_ENC); + + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, enckeylen, + enckeylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, enckeylen, CLASS_1 | + KEY_DEST_CLASS_REG); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) { + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, + MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | + (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); +} + +/** + * cnstr_shdsc_aead_encap - IPSec ESP encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int icvsize, + const bool is_rfc3686, u32 *nonce, + const u32 ctx1_iv_off) +{ + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + FIFOLDST_VLF); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write cryptlen bytes */ + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + aead_append_src_dst(desc, FIFOLD_TYPE_MSG1OUT2); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "aead enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_encap); + +/** + * cnstr_shdsc_aead_decap - IPSec ESP decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool geniv, + const bool is_rfc3686, u32 *nonce, + const u32 ctx1_iv_off) +{ + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + /* Class 2 operation */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + if (geniv) + append_math_add_imm_u32(desc, VARSEQOUTLEN, REG3, IMM, ivsize); + else + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + KEY_VLF); + + if (geniv) { + append_seq_load(desc, ivsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (ctx1_iv_off << LDST_OFFSET_SHIFT)); + append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_CLASS2INFIFO | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | ivsize); + } + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Choose operation */ + if (ctx1_iv_off) + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + else + append_dec_op1(desc, cdata->algtype); + + /* Read and write cryptlen bytes */ + append_math_add(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + aead_append_src_dst(desc, FIFOLD_TYPE_MSG); + + /* Load ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS2 | + FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_ICV); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "aead dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_decap); + +/** + * cnstr_shdsc_aead_givencap - IPSec ESP encapsulation shared descriptor + * (non-protocol) with HW-generated initialization + * vector. + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @adata: pointer to authentication transform definitions. Note that since a + * split key is to be used, the size of the split key itself is + * specified. Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, + * SHA224, SHA256, SHA384, SHA512} ANDed with OP_ALG_AAI_HMAC_PRECOMP. + * @ivsize: initialization vector size + * @icvsize: integrity check value (ICV) size (truncated or full) + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @nonce: pointer to rfc3686 nonce + * @ctx1_iv_off: IV offset in CONTEXT1 register + * + * Note: Requires an MDHA split key. + */ +void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool is_rfc3686, + u32 *nonce, const u32 ctx1_iv_off) +{ + u32 geniv, moveiv; + + /* Note: Context registers are saved. */ + init_sh_desc_key_aead(desc, cdata, adata, is_rfc3686, nonce); + + if (is_rfc3686) + goto copy_iv; + + /* Generate IV */ + geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | + NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | + NFIFOENTRY_PTYPE_RND | (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_WAITCOMP | + MOVE_SRC_INFIFO | MOVE_DEST_CLASS1CTX | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | + (ivsize << MOVE_LEN_SHIFT)); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + +copy_iv: + /* Copy IV to class 1 context */ + append_move(desc, MOVE_SRC_CLASS1CTX | MOVE_DEST_OUTFIFO | + (ctx1_iv_off << MOVE_OFFSET_SHIFT) | + (ivsize << MOVE_LEN_SHIFT)); + + /* Return to encryption */ + append_operation(desc, adata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Read and write assoclen bytes */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc before reading payload */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG | + KEY_VLF); + + /* Copy iv from outfifo to class 2 fifo */ + moveiv = NFIFOENTRY_STYPE_OFIFO | NFIFOENTRY_DEST_CLASS2 | + NFIFOENTRY_DTYPE_MSG | (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, moveiv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_load_imm_u32(desc, ivsize, LDST_CLASS_2_CCB | + LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Will write ivsize + cryptlen */ + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Not need to reload iv */ + append_seq_fifo_load(desc, ivsize, + FIFOLD_CLASS_SKIP); + + /* Will read cryptlen */ + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | KEY_VLF | + FIFOLD_TYPE_MSG1OUT2 | FIFOLD_TYPE_LASTBOTH); + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_2_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "aead givenc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_aead_givencap); + +/** + * cnstr_shdsc_gcm_encap - gcm encapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1, + *zero_assoc_jump_cmd2; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD | JUMP_COND_SELF); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* if assoclen + cryptlen is ZERO, skip to ICV write */ + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + zero_assoc_jump_cmd2 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + /* if assoclen is ZERO, skip reading the assoc data */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* cryptlen = seqinlen - assoclen */ + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG3, CAAM_CMD_SZ); + + /* if cryptlen is ZERO jump to zero-payload commands */ + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + set_jump_tgt_here(desc, zero_assoc_jump_cmd1); + + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* write encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + + /* jump the zero-payload commands */ + append_jump(desc, JUMP_TEST_ALL | 2); + + /* zero-payload commands */ + set_jump_tgt_here(desc, zero_payload_jump_cmd); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST1); + + /* There is no input data */ + set_jump_tgt_here(desc, zero_assoc_jump_cmd2); + + /* write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "gcm enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_gcm_encap); + +/** + * cnstr_shdsc_gcm_decap - gcm decapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *zero_payload_jump_cmd, *zero_assoc_jump_cmd1; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* skip key loading if they are loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | + JUMP_TEST_ALL | JUMP_COND_SHRD | + JUMP_COND_SELF); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + /* if assoclen is ZERO, skip reading the assoc data */ + append_math_add(desc, VARSEQINLEN, ZERO, REG3, CAAM_CMD_SZ); + zero_assoc_jump_cmd1 = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + set_jump_tgt_here(desc, zero_assoc_jump_cmd1); + + /* cryptlen = seqoutlen - assoclen */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* jump to zero-payload command if cryptlen is zero */ + zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | + JUMP_COND_MATH_Z); + + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* store encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* zero-payload command */ + set_jump_tgt_here(desc, zero_payload_jump_cmd); + + /* read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, "gcm dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_gcm_decap); + +/** + * cnstr_shdsc_rfc4106_encap - IPSec ESP gcm encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + /* Skip IV */ + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Will read cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* cryptlen = seqoutlen - assoclen */ + append_math_sub(desc, VARSEQOUTLEN, VARSEQINLEN, REG0, CAAM_CMD_SZ); + + /* Write encrypted data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* Read payload data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4106 enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4106_encap); + +/** + * cnstr_shdsc_rfc4106_decap - IPSec ESP gcm decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + append_math_sub_imm_u32(desc, VARSEQINLEN, REG3, IMM, 8); + append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, CAAM_CMD_SZ); + + /* Read assoc data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_FLUSH1); + + /* Skip IV */ + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Will read cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG3, CAAM_CMD_SZ); + + /* Workaround for erratum A-005473 (simultaneous SEQ FIFO skips) */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_MSG); + + /* Skip assoc data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_SKIP | FIFOLDST_VLF); + + /* Will write cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Store payload data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* Read encrypted data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLDST_VLF | + FIFOLD_TYPE_MSG | FIFOLD_TYPE_FLUSH1); + + /* Read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4106 dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4106_decap); + +/** + * cnstr_shdsc_rfc4543_encap - IPSec ESP gmac encapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* assoclen + cryptlen = seqinlen */ + append_math_sub(desc, REG3, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | + (0x8 << MOVE_LEN_SHIFT)); + + /* Will read assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Will write assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + + /* Read and write assoclen + cryptlen bytes */ + aead_append_src_dst(desc, FIFOLD_TYPE_AAD); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + /* Move payload data to OFIFO */ + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); + + /* Write ICV */ + append_seq_store(desc, icvsize, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4543 enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4543_encap); + +/** + * cnstr_shdsc_rfc4543_decap - IPSec ESP gmac decapsulation shared descriptor + * (non-protocol). + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_GCM. + * @icvsize: integrity check value (ICV) size (truncated or full) + */ +void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize) +{ + u32 *key_jump_cmd, *read_move_cmd, *write_move_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL); + + /* Skip key loading if it is loaded due to sharing */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + if (cdata->key_inline) + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + else + append_key(desc, cdata->key, cdata->keylen, CLASS_1 | + KEY_DEST_CLASS_REG); + set_jump_tgt_here(desc, key_jump_cmd); + + /* Class 1 operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT | OP_ALG_ICV_ON); + + /* assoclen + cryptlen = seqoutlen */ + append_math_sub(desc, REG3, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* + * MOVE_LEN opcode is not available in all SEC HW revisions, + * thus need to do some magic, i.e. self-patch the descriptor + * buffer. + */ + read_move_cmd = append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH3 | + (0x6 << MOVE_LEN_SHIFT)); + write_move_cmd = append_move(desc, MOVE_SRC_MATH3 | MOVE_DEST_DESCBUF | + (0x8 << MOVE_LEN_SHIFT)); + + /* Will read assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQINLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Will write assoclen + cryptlen bytes */ + append_math_sub(desc, VARSEQOUTLEN, SEQOUTLEN, REG0, CAAM_CMD_SZ); + + /* Store payload data */ + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | FIFOLDST_VLF); + + /* In-snoop assoclen + cryptlen data */ + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_BOTH | FIFOLDST_VLF | + FIFOLD_TYPE_AAD | FIFOLD_TYPE_LAST2FLUSH1); + + set_move_tgt_here(desc, read_move_cmd); + set_move_tgt_here(desc, write_move_cmd); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + /* Move payload data to OFIFO */ + append_move(desc, MOVE_SRC_INFIFO_CL | MOVE_DEST_OUTFIFO); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Read ICV */ + append_seq_fifo_load(desc, icvsize, FIFOLD_CLASS_CLASS1 | + FIFOLD_TYPE_ICV | FIFOLD_TYPE_LAST1); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "rfc4543 dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_rfc4543_decap); + +/* + * For ablkcipher encrypt and decrypt, read from req->src and + * write to req->dst + */ +static inline void ablkcipher_append_src_dst(u32 *desc) +{ + append_math_add(desc, VARSEQOUTLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); + append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | + KEY_VLF | FIFOLD_TYPE_MSG | FIFOLD_TYPE_LAST1); + append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | KEY_VLF); +} + +/** + * cnstr_shdsc_ablkcipher_encap - ablkcipher encapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = (u8 *)cdata->key + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); + + /* Load iv */ + append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher enc shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_encap); + +/** + * cnstr_shdsc_ablkcipher_decap - ablkcipher decapsulation shared descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC or OP_ALG_AAI_CTR_MOD128. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = (u8 *)cdata->key + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + + set_jump_tgt_here(desc, key_jump_cmd); + + /* load IV */ + append_seq_load(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + /* Choose operation */ + if (ctx1_iv_off) + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_DECRYPT); + else + append_dec_op1(desc, cdata->algtype); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher dec shdesc@" __stringify(__LINE__)": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_decap); + +/** + * cnstr_shdsc_ablkcipher_givencap - ablkcipher encapsulation shared descriptor + * with HW-generated initialization vector. + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - one of OP_ALG_ALGSEL_{AES, DES, 3DES} ANDed + * with OP_ALG_AAI_CBC. + * @ivsize: initialization vector size + * @is_rfc3686: true when ctr(aes) is wrapped by rfc3686 template + * @ctx1_iv_off: IV offset in CONTEXT1 register + */ +void cnstr_shdsc_ablkcipher_givencap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off) +{ + u32 *key_jump_cmd, geniv; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load Nonce into CONTEXT1 reg */ + if (is_rfc3686) { + u8 *nonce = (u8 *)cdata->key + cdata->keylen; + + append_load_as_imm(desc, nonce, CTR_RFC3686_NONCE_SIZE, + LDST_CLASS_IND_CCB | + LDST_SRCDST_BYTE_OUTFIFO | LDST_IMM); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | + MOVE_DEST_CLASS1CTX | (16 << MOVE_OFFSET_SHIFT) | + (CTR_RFC3686_NONCE_SIZE << MOVE_LEN_SHIFT)); + } + set_jump_tgt_here(desc, key_jump_cmd); + + /* Generate IV */ + geniv = NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DEST_DECO | + NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_LC1 | NFIFOENTRY_PTYPE_RND | + (ivsize << NFIFOENTRY_DLEN_SHIFT); + append_load_imm_u32(desc, geniv, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); + append_cmd(desc, CMD_LOAD | DISABLE_AUTO_INFO_FIFO); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_INFIFO | + MOVE_DEST_CLASS1CTX | (ivsize << MOVE_LEN_SHIFT) | + (ctx1_iv_off << MOVE_OFFSET_SHIFT)); + append_cmd(desc, CMD_LOAD | ENABLE_AUTO_INFO_FIFO); + + /* Copy generated IV to memory */ + append_seq_store(desc, ivsize, LDST_SRCDST_BYTE_CONTEXT | + LDST_CLASS_1_CCB | (ctx1_iv_off << LDST_OFFSET_SHIFT)); + + /* Load Counter into CONTEXT1 reg */ + if (is_rfc3686) + append_load_imm_be32(desc, 1, LDST_IMM | LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + ((ctx1_iv_off + CTR_RFC3686_IV_SIZE) << + LDST_OFFSET_SHIFT)); + + if (ctx1_iv_off) + append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_NCP | + (1 << JUMP_OFFSET_SHIFT)); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "ablkcipher givenc shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_ablkcipher_givencap); + +/** + * cnstr_shdsc_xts_ablkcipher_encap - xts ablkcipher encapsulation shared + * descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS. + */ +void cnstr_shdsc_xts_ablkcipher_encap(u32 * const desc, struct alginfo *cdata) +{ + __be64 sector_size = cpu_to_be64(512); + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 keys only */ + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load sector size with index 40 bytes (0x28) */ + append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (0x28 << LDST_OFFSET_SHIFT)); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* + * create sequence for loading the sector index + * Upper 8B of IV - will be used as sector index + * Lower 8B of IV - will be discarded + */ + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Load operation */ + append_operation(desc, cdata->algtype | OP_ALG_AS_INITFINAL | + OP_ALG_ENCRYPT); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "xts ablkcipher enc shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_encap); + +/** + * cnstr_shdsc_xts_ablkcipher_decap - xts ablkcipher decapsulation shared + * descriptor + * @desc: pointer to buffer used for descriptor construction + * @cdata: pointer to block cipher transform definitions + * Valid algorithm values - OP_ALG_ALGSEL_AES ANDed with OP_ALG_AAI_XTS. + */ +void cnstr_shdsc_xts_ablkcipher_decap(u32 * const desc, struct alginfo *cdata) +{ + __be64 sector_size = cpu_to_be64(512); + u32 *key_jump_cmd; + + init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); + /* Skip if already shared */ + key_jump_cmd = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | + JUMP_COND_SHRD); + + /* Load class1 key only */ + append_key_as_imm(desc, (void *)cdata->key, cdata->keylen, + cdata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); + + /* Load sector size with index 40 bytes (0x28) */ + append_load_as_imm(desc, (void *)§or_size, 8, LDST_CLASS_1_CCB | + LDST_SRCDST_BYTE_CONTEXT | + (0x28 << LDST_OFFSET_SHIFT)); + + set_jump_tgt_here(desc, key_jump_cmd); + + /* + * create sequence for loading the sector index + * Upper 8B of IV - will be used as sector index + * Lower 8B of IV - will be discarded + */ + append_seq_load(desc, 8, LDST_SRCDST_BYTE_CONTEXT | LDST_CLASS_1_CCB | + (0x20 << LDST_OFFSET_SHIFT)); + append_seq_fifo_load(desc, 8, FIFOLD_CLASS_SKIP); + + /* Load operation */ + append_dec_op1(desc, cdata->algtype); + + /* Perform operation */ + ablkcipher_append_src_dst(desc); + +#ifdef DEBUG + print_hex_dump(KERN_ERR, + "xts ablkcipher dec shdesc@" __stringify(__LINE__) ": ", + DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1); +#endif +} +EXPORT_SYMBOL(cnstr_shdsc_xts_ablkcipher_decap); diff --git a/drivers/crypto/caam/caamalg_desc.h b/drivers/crypto/caam/caamalg_desc.h new file mode 100644 index 000000000000..95551737333a --- /dev/null +++ b/drivers/crypto/caam/caamalg_desc.h @@ -0,0 +1,97 @@ +/* + * Shared descriptors for aead, ablkcipher algorithms + * + * Copyright 2016 NXP + */ + +#ifndef _CAAMALG_DESC_H_ +#define _CAAMALG_DESC_H_ + +/* length of descriptors text */ +#define DESC_AEAD_BASE (4 * CAAM_CMD_SZ) +#define DESC_AEAD_ENC_LEN (DESC_AEAD_BASE + 11 * CAAM_CMD_SZ) +#define DESC_AEAD_DEC_LEN (DESC_AEAD_BASE + 15 * CAAM_CMD_SZ) +#define DESC_AEAD_GIVENC_LEN (DESC_AEAD_ENC_LEN + 7 * CAAM_CMD_SZ) + +/* Note: Nonce is counted in cdata.keylen */ +#define DESC_AEAD_CTR_RFC3686_LEN (4 * CAAM_CMD_SZ) + +#define DESC_AEAD_NULL_BASE (3 * CAAM_CMD_SZ) +#define DESC_AEAD_NULL_ENC_LEN (DESC_AEAD_NULL_BASE + 11 * CAAM_CMD_SZ) +#define DESC_AEAD_NULL_DEC_LEN (DESC_AEAD_NULL_BASE + 13 * CAAM_CMD_SZ) + +#define DESC_GCM_BASE (3 * CAAM_CMD_SZ) +#define DESC_GCM_ENC_LEN (DESC_GCM_BASE + 16 * CAAM_CMD_SZ) +#define DESC_GCM_DEC_LEN (DESC_GCM_BASE + 12 * CAAM_CMD_SZ) + +#define DESC_RFC4106_BASE (3 * CAAM_CMD_SZ) +#define DESC_RFC4106_ENC_LEN (DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ) +#define DESC_RFC4106_DEC_LEN (DESC_RFC4106_BASE + 13 * CAAM_CMD_SZ) + +#define DESC_RFC4543_BASE (3 * CAAM_CMD_SZ) +#define DESC_RFC4543_ENC_LEN (DESC_RFC4543_BASE + 11 * CAAM_CMD_SZ) +#define DESC_RFC4543_DEC_LEN (DESC_RFC4543_BASE + 12 * CAAM_CMD_SZ) + +#define DESC_ABLKCIPHER_BASE (3 * CAAM_CMD_SZ) +#define DESC_ABLKCIPHER_ENC_LEN (DESC_ABLKCIPHER_BASE + \ + 20 * CAAM_CMD_SZ) +#define DESC_ABLKCIPHER_DEC_LEN (DESC_ABLKCIPHER_BASE + \ + 15 * CAAM_CMD_SZ) + +void cnstr_shdsc_aead_null_encap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize); + +void cnstr_shdsc_aead_null_decap(u32 * const desc, struct alginfo *adata, + unsigned int icvsize); + +void cnstr_shdsc_aead_encap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int icvsize, + const bool is_rfc3686, u32 *nonce, + const u32 ctx1_iv_off); + +void cnstr_shdsc_aead_decap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool geniv, + const bool is_rfc3686, u32 *nonce, + const u32 ctx1_iv_off); + +void cnstr_shdsc_aead_givencap(u32 * const desc, struct alginfo *cdata, + struct alginfo *adata, unsigned int ivsize, + unsigned int icvsize, const bool is_rfc3686, + u32 *nonce, const u32 ctx1_iv_off); + +void cnstr_shdsc_gcm_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_gcm_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_rfc4106_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_rfc4106_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_rfc4543_encap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_rfc4543_decap(u32 * const desc, struct alginfo *cdata, + unsigned int icvsize); + +void cnstr_shdsc_ablkcipher_encap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off); + +void cnstr_shdsc_ablkcipher_decap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off); + +void cnstr_shdsc_ablkcipher_givencap(u32 * const desc, struct alginfo *cdata, + unsigned int ivsize, const bool is_rfc3686, + const u32 ctx1_iv_off); + +void cnstr_shdsc_xts_ablkcipher_encap(u32 * const desc, struct alginfo *cdata); + +void cnstr_shdsc_xts_ablkcipher_decap(u32 * const desc, struct alginfo *cdata); + +#endif /* _CAAMALG_DESC_H_ */ |