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author | Tudor Ambarus <tudor.ambarus@freescale.com> | 2014-04-03 10:50:59 (GMT) |
---|---|---|
committer | Jose Rivera <German.Rivera@freescale.com> | 2014-04-18 03:55:22 (GMT) |
commit | 96357638ce888b4a4c52622463370507eb54a904 (patch) | |
tree | 2c451f18b29ce3454e1342c74311576a823214ee /drivers/crypto/caam | |
parent | 3c69b6617636f2993093ffada015b6b34c6f58eb (diff) | |
download | linux-fsl-qoriq-96357638ce888b4a4c52622463370507eb54a904.tar.xz |
crypto: caam/qi - make tls10 descriptors compatible with Era3 and Era2
Replace instructions that are not supported in Era3 and Era2.
Change-Id: I7c4c9417a66921537875b507185f60826b477c6e
Signed-off-by: Tudor Ambarus <tudor.ambarus@freescale.com>
Reviewed-on: http://git.am.freescale.net:8181/10818
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Horia Ioan Geanta Neag <horia.geanta@freescale.com>
Tested-by: Jose Rivera <German.Rivera@freescale.com>
Reviewed-by: Jose Rivera <German.Rivera@freescale.com>
Diffstat (limited to 'drivers/crypto/caam')
-rw-r--r-- | drivers/crypto/caam/caamalg_qi.c | 48 |
1 files changed, 32 insertions, 16 deletions
diff --git a/drivers/crypto/caam/caamalg_qi.c b/drivers/crypto/caam/caamalg_qi.c index 3dac8d1..7e85816 100644 --- a/drivers/crypto/caam/caamalg_qi.c +++ b/drivers/crypto/caam/caamalg_qi.c @@ -386,7 +386,7 @@ static int tls_set_sh_desc(struct crypto_aead *aead) struct caam_ctx *ctx = crypto_aead_ctx(aead); bool keys_fit_inline = false; u32 *key_jump_cmd, *zero_payload_jump_cmd, *skip_zero_jump_cmd; - u32 genpad, clrw, jumpback, stidx; + u32 genpad, jumpback, stidx; u32 *desc; unsigned int blocksize = crypto_aead_blocksize(aead); /* Associated data length is always = 13 for TLS */ @@ -436,11 +436,11 @@ static int tls_set_sh_desc(struct crypto_aead *aead) OP_ALG_AS_INITFINAL | OP_ALG_ENCRYPT); /* payloadlen = input data length - (assoclen + ivlen) */ - append_math_sub_imm_u32(desc, VARSEQINLEN, SEQINLEN, IMM, assoclen + + append_math_sub_imm_u32(desc, REG0, SEQINLEN, IMM, assoclen + tfm->ivsize); /* math1 = payloadlen + icvlen */ - append_math_add_imm_u32(desc, REG1, VARSEQINLEN, IMM, ctx->authsize); + append_math_add_imm_u32(desc, REG1, REG0, IMM, ctx->authsize); /* padlen = block_size - math1 % block_size */ append_math_and_imm_u32(desc, REG3, REG1, IMM, blocksize - 1); @@ -449,11 +449,26 @@ static int tls_set_sh_desc(struct crypto_aead *aead) /* cryptlen = payloadlen + icvlen + padlen */ append_math_add(desc, VARSEQOUTLEN, REG1, REG2, 4); + /* + * update immediate data with the padding length value + * for the LOAD in the class 1 data size register. + */ + append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 | + (45 * 4 << MOVE_OFFSET_SHIFT) | 7); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF | + (45 * 4 << MOVE_OFFSET_SHIFT) | 8); + + /* overwrite PL field for the padding iNFO FIFO entry */ + append_move(desc, MOVE_SRC_DESCBUF | MOVE_DEST_MATH2 | + (47 * 4 << MOVE_OFFSET_SHIFT) | 7); + append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH2 | MOVE_DEST_DESCBUF | + (47 * 4 << MOVE_OFFSET_SHIFT) | 8); + /* store encrypted payload, icv and padding */ append_seq_fifo_store(desc, 0, FIFOST_TYPE_MESSAGE_DATA | LDST_VLF); /* if payload length is zero, jump to zero-payload commands */ - append_math_add(desc, NONE, ZERO, VARSEQINLEN, 4); + append_math_add(desc, VARSEQINLEN, ZERO, REG0, 4); zero_payload_jump_cmd = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_MATH_Z); @@ -482,12 +497,15 @@ static int tls_set_sh_desc(struct crypto_aead *aead) append_move(desc, MOVE_SRC_CLASS2CTX | MOVE_DEST_CLASS1INFIFO | ctx->authsize); + /* update class 1 data size register with padding length */ + append_load_imm_u32(desc, 0, LDST_CLASS_1_CCB | + LDST_SRCDST_WORD_DATASZ_REG | LDST_IMM); + /* generate padding and send it to encryption */ genpad = NFIFOENTRY_DEST_CLASS1 | NFIFOENTRY_LC1 | NFIFOENTRY_FC1 | NFIFOENTRY_STYPE_PAD | NFIFOENTRY_DTYPE_MSG | NFIFOENTRY_PTYPE_N; append_load_imm_u32(desc, genpad, LDST_CLASS_IND_CCB | - LDST_SRCDST_WORD_INFO_FIFO_SZM | LDST_IMM | - (2 & LDST_LEN_MASK)); + LDST_SRCDST_WORD_INFO_FIFO | LDST_IMM); #ifdef DEBUG print_hex_dump(KERN_ERR, "tls enc shdesc@"__stringify(__LINE__)": ", @@ -546,11 +564,9 @@ static int tls_set_sh_desc(struct crypto_aead *aead) append_move(desc, MOVE_WAITCOMP | MOVE_SRC_OUTFIFO | MOVE_DEST_MATH0 | blocksize); - /* clear cha1 specific registers */ - clrw = CLRW_CLR_C1MODE | CLRW_CLR_C1DATAS | CLRW_CLR_C1CTX | - CLRW_RESET_CLS1_CHA; - append_load_imm_u32(desc, clrw, LDST_CLASS_IND_CCB | - LDST_SRCDST_WORD_CLRW | LDST_IMM); + /* reset AES CHA */ + append_load_imm_u32(desc, CCTRL_RESET_CHA_AESA, LDST_CLASS_IND_CCB | + LDST_SRCDST_WORD_CHACTRL | LDST_IMM); /* rewind input sequence */ append_seq_in_ptr_intlen(desc, 0, 65535, SQIN_RTO); @@ -563,7 +579,7 @@ static int tls_set_sh_desc(struct crypto_aead *aead) append_seq_fifo_load(desc, 8, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_MSG); /* load Type, Version and Len fields in math0 */ append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_DECO | - LDST_SRCDST_WORD_DECO_MATH0 | 5); + LDST_SRCDST_WORD_DECO_MATH0 | (3 << LDST_OFFSET_SHIFT) | 5); /* load iv in context1 */ append_cmd(desc, CMD_SEQ_LOAD | LDST_CLASS_1_CCB | @@ -581,7 +597,6 @@ static int tls_set_sh_desc(struct crypto_aead *aead) append_math_add(desc, VARSEQOUTLEN, ZERO, REG3, 4); /* update Len field */ - append_math_rshift_imm_u64(desc, REG0, REG0, IMM, 24); append_math_sub(desc, REG0, REG0, REG2, 8); /* store decrypted payload, icv and padding */ @@ -622,7 +637,7 @@ static int tls_set_sh_desc(struct crypto_aead *aead) /* move seqoutptr fields into math registers */ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_DESCBUF | MOVE_DEST_MATH0 | - (55 * 4 << MOVE_OFFSET_SHIFT) | 20); + (54 * 4 << MOVE_OFFSET_SHIFT) | 20); /* seqinptr will point to seqoutptr */ append_math_and_imm_u32(desc, REG0, REG0, IMM, ~(CMD_SEQ_IN_PTR ^ CMD_SEQ_OUT_PTR)); @@ -631,9 +646,10 @@ static int tls_set_sh_desc(struct crypto_aead *aead) append_load_imm_u32(desc, jumpback, LDST_CLASS_DECO | LDST_IMM | LDST_SRCDST_WORD_DECO_MATH2 | (4 << LDST_OFFSET_SHIFT)); + append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 1); /* move updated seqinptr fields to JD */ append_move(desc, MOVE_WAITCOMP | MOVE_SRC_MATH0 | MOVE_DEST_DESCBUF | - (55 * 4 << MOVE_OFFSET_SHIFT) | 24); + (54 * 4 << MOVE_OFFSET_SHIFT) | 24); /* read updated seqinptr */ append_jump(desc, JUMP_TEST_ALL | JUMP_COND_CALM | 6); @@ -2040,7 +2056,7 @@ static struct caam_alg_template driver_algs[] = { .class1_alg_type = OP_ALG_ALGSEL_AES | OP_ALG_AAI_CBC, .class2_alg_type = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC_PRECOMP, .alg_op = OP_ALG_ALGSEL_SHA1 | OP_ALG_AAI_HMAC, - .min_era = 4, + .min_era = 2, } }; |