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-rw-r--r--drivers/crypto/caam/caamhash.c40
-rw-r--r--drivers/crypto/caam/key_gen.c30
2 files changed, 23 insertions, 47 deletions
diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index a71408f36654..d7483e4d0ce2 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -395,13 +395,13 @@ static int acmac_set_sh_desc(struct crypto_ahash *ahash)
}
/* Digest hash size if it is too large */
-static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
- u32 *keylen, u8 *key_out, u32 digestsize)
+static int hash_digest_key(struct caam_hash_ctx *ctx, u32 *keylen, u8 *key,
+ u32 digestsize)
{
struct device *jrdev = ctx->jrdev;
u32 *desc;
struct split_key_result result;
- dma_addr_t src_dma, dst_dma;
+ dma_addr_t key_dma;
int ret;
desc = kmalloc(CAAM_CMD_SZ * 8 + CAAM_PTR_SZ * 2, GFP_KERNEL | GFP_DMA);
@@ -412,18 +412,9 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
init_job_desc(desc, 0);
- src_dma = dma_map_single(jrdev, (void *)key_in, *keylen,
- DMA_TO_DEVICE);
- if (dma_mapping_error(jrdev, src_dma)) {
- dev_err(jrdev, "unable to map key input memory\n");
- kfree(desc);
- return -ENOMEM;
- }
- dst_dma = dma_map_single(jrdev, (void *)key_out, digestsize,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(jrdev, dst_dma)) {
- dev_err(jrdev, "unable to map key output memory\n");
- dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE);
+ key_dma = dma_map_single(jrdev, key, *keylen, DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(jrdev, key_dma)) {
+ dev_err(jrdev, "unable to map key memory\n");
kfree(desc);
return -ENOMEM;
}
@@ -431,16 +422,16 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
/* Job descriptor to perform unkeyed hash on key_in */
append_operation(desc, ctx->adata.algtype | OP_ALG_ENCRYPT |
OP_ALG_AS_INITFINAL);
- append_seq_in_ptr(desc, src_dma, *keylen, 0);
+ append_seq_in_ptr(desc, key_dma, *keylen, 0);
append_seq_fifo_load(desc, *keylen, FIFOLD_CLASS_CLASS2 |
FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_MSG);
- append_seq_out_ptr(desc, dst_dma, digestsize, 0);
+ append_seq_out_ptr(desc, key_dma, digestsize, 0);
append_seq_store(desc, digestsize, LDST_CLASS_2_CCB |
LDST_SRCDST_BYTE_CONTEXT);
#ifdef DEBUG
print_hex_dump(KERN_ERR, "key_in@"__stringify(__LINE__)": ",
- DUMP_PREFIX_ADDRESS, 16, 4, key_in, *keylen, 1);
+ DUMP_PREFIX_ADDRESS, 16, 4, key, *keylen, 1);
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
#endif
@@ -456,12 +447,10 @@ static int hash_digest_key(struct caam_hash_ctx *ctx, const u8 *key_in,
#ifdef DEBUG
print_hex_dump(KERN_ERR,
"digested key@"__stringify(__LINE__)": ",
- DUMP_PREFIX_ADDRESS, 16, 4, key_in,
- digestsize, 1);
+ DUMP_PREFIX_ADDRESS, 16, 4, key, digestsize, 1);
#endif
}
- dma_unmap_single(jrdev, src_dma, *keylen, DMA_TO_DEVICE);
- dma_unmap_single(jrdev, dst_dma, digestsize, DMA_FROM_DEVICE);
+ dma_unmap_single(jrdev, key_dma, *keylen, DMA_BIDIRECTIONAL);
*keylen = digestsize;
@@ -485,13 +474,10 @@ static int ahash_setkey(struct crypto_ahash *ahash,
#endif
if (keylen > blocksize) {
- hashed_key = kmalloc_array(digestsize,
- sizeof(*hashed_key),
- GFP_KERNEL | GFP_DMA);
+ hashed_key = kmemdup(key, keylen, GFP_KERNEL | GFP_DMA);
if (!hashed_key)
return -ENOMEM;
- ret = hash_digest_key(ctx, key, &keylen, hashed_key,
- digestsize);
+ ret = hash_digest_key(ctx, &keylen, hashed_key, digestsize);
if (ret)
goto bad_free_key;
key = hashed_key;
diff --git a/drivers/crypto/caam/key_gen.c b/drivers/crypto/caam/key_gen.c
index 312b5f042f31..8d0713fae6ac 100644
--- a/drivers/crypto/caam/key_gen.c
+++ b/drivers/crypto/caam/key_gen.c
@@ -48,7 +48,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
{
u32 *desc;
struct split_key_result result;
- dma_addr_t dma_addr_in, dma_addr_out;
+ dma_addr_t dma_addr;
int ret = -ENOMEM;
adata->keylen = split_key_len(adata->algtype & OP_ALG_ALGSEL_MASK);
@@ -71,22 +71,17 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
return ret;
}
- dma_addr_in = dma_map_single(jrdev, (void *)key_in, keylen,
- DMA_TO_DEVICE);
- if (dma_mapping_error(jrdev, dma_addr_in)) {
- dev_err(jrdev, "unable to map key input memory\n");
- goto out_free;
- }
+ memcpy(key_out, key_in, keylen);
- dma_addr_out = dma_map_single(jrdev, key_out, adata->keylen_pad,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(jrdev, dma_addr_out)) {
- dev_err(jrdev, "unable to map key output memory\n");
- goto out_unmap_in;
+ dma_addr = dma_map_single(jrdev, key_out, adata->keylen_pad,
+ DMA_BIDIRECTIONAL);
+ if (dma_mapping_error(jrdev, dma_addr)) {
+ dev_err(jrdev, "unable to map key memory\n");
+ goto out_free;
}
init_job_desc(desc, 0);
- append_key(desc, dma_addr_in, keylen, CLASS_2 | KEY_DEST_CLASS_REG);
+ append_key(desc, dma_addr, keylen, CLASS_2 | KEY_DEST_CLASS_REG);
/* Sets MDHA up into an HMAC-INIT */
append_operation(desc, (adata->algtype & OP_ALG_ALGSEL_MASK) |
@@ -104,12 +99,10 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
* FIFO_STORE with the explicit split-key content store
* (0x26 output type)
*/
- append_fifo_store(desc, dma_addr_out, adata->keylen,
+ append_fifo_store(desc, dma_addr, adata->keylen,
LDST_CLASS_2_CCB | FIFOST_TYPE_SPLIT_KEK);
#ifdef DEBUG
- print_hex_dump(KERN_ERR, "ctx.key@"__stringify(__LINE__)": ",
- DUMP_PREFIX_ADDRESS, 16, 4, key_in, keylen, 1);
print_hex_dump(KERN_ERR, "jobdesc@"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, desc, desc_bytes(desc), 1);
#endif
@@ -129,10 +122,7 @@ int gen_split_key(struct device *jrdev, u8 *key_out,
#endif
}
- dma_unmap_single(jrdev, dma_addr_out, adata->keylen_pad,
- DMA_FROM_DEVICE);
-out_unmap_in:
- dma_unmap_single(jrdev, dma_addr_in, keylen, DMA_TO_DEVICE);
+ dma_unmap_single(jrdev, dma_addr, adata->keylen_pad, DMA_BIDIRECTIONAL);
out_free:
kfree(desc);
return ret;
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