Remove the remains of no longer existing support for running
blkcipher is sync mode.
Signed-off-by: Gilad Ben-Yossef <gi...@benyossef.com>
---
drivers/staging/ccree/ssi_cipher.c | 156 ++++++++++++-------------------------
1 file changed, 51 insertions(+), 105 deletions(-)
diff --git a/drivers/staging/ccree/ssi_cipher.c
b/drivers/staging/ccree/ssi_cipher.c
index 7b484f1..0dc63f1 100644
--- a/drivers/staging/ccree/ssi_cipher.c
+++ b/drivers/staging/ccree/ssi_cipher.c
@@ -180,7 +180,7 @@ static unsigned int get_max_keysize(struct crypto_tfm *tfm)
return 0;
}
-static int ssi_blkcipher_init(struct crypto_tfm *tfm)
+static int ssi_ablkcipher_init(struct crypto_tfm *tfm)
{
struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct crypto_alg *alg = tfm->__crt_alg;
@@ -189,10 +189,13 @@ static int ssi_blkcipher_init(struct crypto_tfm *tfm)
struct device *dev = drvdata_to_dev(ssi_alg->drvdata);
int rc = 0;
unsigned int max_key_buf_size = get_max_keysize(tfm);
+ struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher;
dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p,
crypto_tfm_alg_name(tfm));
+ ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);
+
ctx_p->cipher_mode = ssi_alg->cipher_mode;
ctx_p->flow_mode = ssi_alg->flow_mode;
ctx_p->drvdata = ssi_alg->drvdata;
@@ -297,10 +300,10 @@ static enum cc_hw_crypto_key hw_key_to_cc_hw_key(int
slot_num)
return END_OF_KEYS;
}
-static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,
- const u8 *key,
+static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *atfm, const u8 *key,
unsigned int keylen)
{
+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(atfm);
struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct device *dev = drvdata_to_dev(ctx_p->drvdata);
u32 tmp[DES_EXPKEY_WORDS];
@@ -700,62 +703,59 @@ ssi_blkcipher_create_data_desc(
}
}
-static int ssi_blkcipher_complete(struct device *dev,
- struct ssi_ablkcipher_ctx *ctx_p,
- struct blkcipher_req_ctx *req_ctx,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int ivsize,
- void *areq)
+static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req)
{
+ struct ablkcipher_request *areq = (struct ablkcipher_request *)ssi_req;
+ struct scatterlist *dst = areq->dst;
+ struct scatterlist *src = areq->src;
+ struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq);
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
+ unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
int completion_error = 0;
struct ablkcipher_request *req = (struct ablkcipher_request *)areq;
cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
kfree(req_ctx->iv);
- if (areq) {
- /*
- * The crypto API expects us to set the req->info to the last
- * ciphertext block. For encrypt, simply copy from the result.
- * For decrypt, we must copy from a saved buffer since this
- * could be an in-place decryption operation and the src is
- * lost by this point.
- */
- if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
- memcpy(req->info, req_ctx->backup_info, ivsize);
- kfree(req_ctx->backup_info);
- } else {
- scatterwalk_map_and_copy(req->info, req->dst,
- (req->nbytes - ivsize),
- ivsize, 0);
- }
-
- ablkcipher_request_complete(areq, completion_error);
- return 0;
+ /*
+ * The crypto API expects us to set the req->info to the last
+ * ciphertext block. For encrypt, simply copy from the result.
+ * For decrypt, we must copy from a saved buffer since this
+ * could be an in-place decryption operation and the src is
+ * lost by this point.
+ */
+ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ memcpy(req->info, req_ctx->backup_info, ivsize);
+ kfree(req_ctx->backup_info);
+ } else {
+ scatterwalk_map_and_copy(req->info, req->dst,
+ (req->nbytes - ivsize),
+ ivsize, 0);
}
- return completion_error;
+
+ ablkcipher_request_complete(areq, completion_error);
}
-static int ssi_blkcipher_process(
- struct crypto_tfm *tfm,
- struct blkcipher_req_ctx *req_ctx,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes,
- void *info, //req info
- unsigned int ivsize,
- void *areq,
- enum drv_crypto_direction direction)
+static int cc_cipher_process(struct ablkcipher_request *req,
+ enum drv_crypto_direction direction)
{
+ struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);
+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);
+ struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
+ unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);
+ struct scatterlist *dst = req->dst;
+ struct scatterlist *src = req->src;
+ unsigned int nbytes = req->nbytes;
+ void *info = req->info;
struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct device *dev = drvdata_to_dev(ctx_p->drvdata);
struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];
struct ssi_crypto_req ssi_req = {};
int rc, seq_len = 0, cts_restore_flag = 0;
- dev_dbg(dev, "%s areq=%p info=%p nbytes=%d\n",
+ dev_dbg(dev, "%s req=%p info=%p nbytes=%d\n",
((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
- "Encrypt" : "Decrypt"), areq, info, nbytes);
+ "Encrypt" : "Decrypt"), req, info, nbytes);
/* STAT_PHASE_0: Init and sanity checks */
@@ -791,7 +791,7 @@ static int ssi_blkcipher_process(
/* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_ablkcipher_complete;
- ssi_req.user_arg = (void *)areq;
+ ssi_req.user_arg = (void *)req;
#ifdef ENABLE_CYCLE_COUNT
ssi_req.op_type = (direction == DRV_CRYPTO_DIRECTION_DECRYPT) ?
@@ -823,7 +823,7 @@ static int ssi_blkcipher_process(
ssi_blkcipher_create_setup_desc(tfm, req_ctx, ivsize, nbytes,
desc, &seq_len);
/* Data processing */
- ssi_blkcipher_create_data_desc(tfm, req_ctx, dst, src, nbytes, areq,
+ ssi_blkcipher_create_data_desc(tfm, req_ctx, dst, src, nbytes, req,
desc, &seq_len);
/* do we need to generate IV? */
@@ -836,25 +836,12 @@ static int ssi_blkcipher_process(
/* STAT_PHASE_3: Lock HW and push sequence */
- rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len,
- (!areq) ? 0 : 1);
- if (areq) {
- if (rc != -EINPROGRESS) {
- /* Failed to send the request or request completed
- * synchronously
- */
- cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src,
- dst);
- }
-
- } else {
- if (rc) {
- cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src,
- dst);
- } else {
- rc = ssi_blkcipher_complete(dev, ctx_p, req_ctx, dst,
- src, ivsize, NULL);
- }
+ rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, 1);
+ if (rc != -EINPROGRESS) {
+ /* Failed to send the request or request completed
+ * synchronously
+ */
+ cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
}
exit_process:
@@ -869,56 +856,19 @@ static int ssi_blkcipher_process(
return rc;
}
-static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req)
-{
- struct ablkcipher_request *areq = (struct ablkcipher_request *)ssi_req;
- struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq);
- struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
- struct ssi_ablkcipher_ctx *ctx_p = crypto_ablkcipher_ctx(tfm);
- unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
-
- ssi_blkcipher_complete(dev, ctx_p, req_ctx, areq->dst, areq->src,
- ivsize, areq);
-}
-
-/* Async wrap functions */
-
-static int ssi_ablkcipher_init(struct crypto_tfm *tfm)
-{
- struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher;
-
- ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);
-
- return ssi_blkcipher_init(tfm);
-}
-
-static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
- const u8 *key,
- unsigned int keylen)
-{
- return ssi_blkcipher_setkey(crypto_ablkcipher_tfm(tfm), key, keylen);
-}
-
static int ssi_ablkcipher_encrypt(struct ablkcipher_request *req)
{
- struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);
struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
- unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);
req_ctx->is_giv = false;
req_ctx->backup_info = NULL;
- return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src,
- req->nbytes, req->info, ivsize,
- (void *)req,
- DRV_CRYPTO_DIRECTION_ENCRYPT);
+ return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
}
static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req)
{
struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);
- struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);
struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);
@@ -934,15 +884,11 @@ static int ssi_ablkcipher_decrypt(struct
ablkcipher_request *req)
(req->nbytes - ivsize), ivsize, 0);
req_ctx->is_giv = false;
- return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src,
- req->nbytes, req->info, ivsize,
- (void *)req,
- DRV_CRYPTO_DIRECTION_DECRYPT);
+ return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT);
}
/* DX Block cipher alg */
static struct ssi_alg_template blkcipher_algs[] = {
-/* Async template */
#if SSI_CC_HAS_AES_XTS
{
.name = "xts(aes)",
--
2.7.4
