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staging: ccree: remove cipher sync blkcipher remains 

Remove the remains of no longer existing support for running
blkcipher is sync mode.

Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gilad Ben-Yossef 2017-12-12 14:52:57 +00:00 коммит произвёл Greg Kroah-Hartman
Родитель fc2a36c065
Коммит 3d035ae090
1 изменённых файлов: 51 добавлений и 105 удалений
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156
drivers/staging/ccree/ssi_cipher.c
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@ -180,7 +180,7 @@ static unsigned int get_max_keysize(struct crypto_tfm *tfm)
return 0; 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 ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct crypto_alg *alg = tfm->__crt_alg; 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); struct device *dev = drvdata_to_dev(ssi_alg->drvdata);
int rc = 0; int rc = 0;
unsigned int max_key_buf_size = get_max_keysize(tfm); 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, dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p,
crypto_tfm_alg_name(tfm)); crypto_tfm_alg_name(tfm));
ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);
ctx_p->cipher_mode = ssi_alg->cipher_mode; ctx_p->cipher_mode = ssi_alg->cipher_mode;
ctx_p->flow_mode = ssi_alg->flow_mode; ctx_p->flow_mode = ssi_alg->flow_mode;
ctx_p->drvdata = ssi_alg->drvdata; 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; return END_OF_KEYS;
} }
static int ssi_blkcipher_setkey(struct crypto_tfm *tfm, static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *atfm, const u8 *key,
const u8 *key,
unsigned int keylen) unsigned int keylen)
{ {
struct crypto_tfm *tfm = crypto_ablkcipher_tfm(atfm);
struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct device *dev = drvdata_to_dev(ctx_p->drvdata); struct device *dev = drvdata_to_dev(ctx_p->drvdata);
u32 tmp[DES_EXPKEY_WORDS]; u32 tmp[DES_EXPKEY_WORDS];
@ -700,62 +703,59 @@ ssi_blkcipher_create_data_desc(
} }
} }
static int ssi_blkcipher_complete(struct device *dev, static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req)
struct ssi_ablkcipher_ctx *ctx_p,
struct blkcipher_req_ctx *req_ctx,
struct scatterlist *dst,
struct scatterlist *src,
unsigned int ivsize,
void *areq)
{ {
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; int completion_error = 0;
struct ablkcipher_request *req = (struct ablkcipher_request *)areq; struct ablkcipher_request *req = (struct ablkcipher_request *)areq;
cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst); cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
kfree(req_ctx->iv); kfree(req_ctx->iv);
if (areq) { /*
/* * The crypto API expects us to set the req->info to the last
* The crypto API expects us to set the req->info to the last * ciphertext block. For encrypt, simply copy from the result.
* ciphertext block. For encrypt, simply copy from the result. * For decrypt, we must copy from a saved buffer since this
* For decrypt, we must copy from a saved buffer since this * could be an in-place decryption operation and the src is
* could be an in-place decryption operation and the src is * lost by this point.
* lost by this point. */
*/ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) { memcpy(req->info, req_ctx->backup_info, ivsize);
memcpy(req->info, req_ctx->backup_info, ivsize); kfree(req_ctx->backup_info);
kfree(req_ctx->backup_info); } else {
} else { scatterwalk_map_and_copy(req->info, req->dst,
scatterwalk_map_and_copy(req->info, req->dst, (req->nbytes - ivsize),
(req->nbytes - ivsize), ivsize, 0);
ivsize, 0);
}
ablkcipher_request_complete(areq, completion_error);
return 0;
} }
return completion_error;
ablkcipher_request_complete(areq, completion_error);
} }
static int ssi_blkcipher_process( static int cc_cipher_process(struct ablkcipher_request *req,
struct crypto_tfm *tfm, enum drv_crypto_direction direction)
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)
{ {
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 ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
struct device *dev = drvdata_to_dev(ctx_p->drvdata); struct device *dev = drvdata_to_dev(ctx_p->drvdata);
struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN]; struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];
struct ssi_crypto_req ssi_req = {}; struct ssi_crypto_req ssi_req = {};
int rc, seq_len = 0, cts_restore_flag = 0; 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) ? ((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
"Encrypt" : "Decrypt"), areq, info, nbytes); "Encrypt" : "Decrypt"), req, info, nbytes);
/* STAT_PHASE_0: Init and sanity checks */ /* STAT_PHASE_0: Init and sanity checks */
@ -791,7 +791,7 @@ static int ssi_blkcipher_process(
/* Setup DX request structure */ /* Setup DX request structure */
ssi_req.user_cb = (void *)ssi_ablkcipher_complete; ssi_req.user_cb = (void *)ssi_ablkcipher_complete;
ssi_req.user_arg = (void *)areq; ssi_req.user_arg = (void *)req;
#ifdef ENABLE_CYCLE_COUNT #ifdef ENABLE_CYCLE_COUNT
ssi_req.op_type = (direction == DRV_CRYPTO_DIRECTION_DECRYPT) ? 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, ssi_blkcipher_create_setup_desc(tfm, req_ctx, ivsize, nbytes,
desc, &seq_len); desc, &seq_len);
/* Data processing */ /* 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); desc, &seq_len);
/* do we need to generate IV? */ /* do we need to generate IV? */
@ -836,25 +836,12 @@ static int ssi_blkcipher_process(
/* STAT_PHASE_3: Lock HW and push sequence */ /* STAT_PHASE_3: Lock HW and push sequence */
rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, 1);
(!areq) ? 0 : 1); if (rc != -EINPROGRESS) {
if (areq) { /* Failed to send the request or request completed
if (rc != -EINPROGRESS) { * synchronously
/* Failed to send the request or request completed */
* synchronously cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
*/
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);
}
} }
exit_process: exit_process:
@ -869,56 +856,19 @@ exit_process:
return rc; 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) 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); 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->is_giv = false;
req_ctx->backup_info = NULL; req_ctx->backup_info = NULL;
return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src, return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
req->nbytes, req->info, ivsize,
(void *)req,
DRV_CRYPTO_DIRECTION_ENCRYPT);
} }
static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req) static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req)
{ {
struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(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); struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm); 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->nbytes - ivsize), ivsize, 0);
req_ctx->is_giv = false; req_ctx->is_giv = false;
return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src, return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT);
req->nbytes, req->info, ivsize,
(void *)req,
DRV_CRYPTO_DIRECTION_DECRYPT);
} }
/* DX Block cipher alg */ /* DX Block cipher alg */
static struct ssi_alg_template blkcipher_algs[] = { static struct ssi_alg_template blkcipher_algs[] = {
/* Async template */
#if SSI_CC_HAS_AES_XTS #if SSI_CC_HAS_AES_XTS
{ {
.name = "xts(aes)", .name = "xts(aes)",