crypto: caam - refactor encryption descriptors generation
Refactor the generation of the authenc, ablkcipher shared descriptors
and exports the functionality, such that they could be shared
with the upcoming caam/qi (Queue Interface) driver.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index 9cb95f5..78b0b7c 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 @@
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 @@
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 @@
/* 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 @@
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 @@
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 @@
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 @@
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 @@
* 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 @@
/* 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 @@
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 @@
/* 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 @@
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 @@
/* 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 @@
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 @@
{
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 @@
}
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 @@
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 @@
}
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 @@
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 @@
{
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 @@
}
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 @@
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 @@
}
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 @@
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 @@
{
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 @@
}
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 @@
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 @@
}
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 @@
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 @@
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 @@
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 @@
/* 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 @@
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 @@
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 @@
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 @@
{
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 @@
/* 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 @@
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;
}