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Commit 8cea7b66 authored by Horia Geantă's avatar Horia Geantă Committed by Herbert Xu
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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: default avatarHoria Geantă <horia.geanta@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 746f0690
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Showing with 1440 additions and 1072 deletions
drivers/crypto/caam/Kconfig
View file @ 8cea7b66
......@@ -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
drivers/crypto/caam/Makefile
View file @ 8cea7b66
......@@ -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
......
drivers/crypto/caam/caamalg.c
View file @ 8cea7b66
......@@ -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 @@ static int aead_set_sh_desc(struct crypto_aead *aead)
/* 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 @@ 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 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 @@ static int aead_set_sh_desc(struct crypto_aead *aead)
/* 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 @@ 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 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 *)&sector_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 *)&sector_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;
}
......
drivers/crypto/caam/caamalg_desc.c 0 → 100644
View file @ 8cea7b66
/*
* 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 *)&sector_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 *)&sector_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);
drivers/crypto/caam/caamalg_desc.h 0 → 100644
View file @ 8cea7b66
/*
* 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_ */
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