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crypto: mv_cesa - Enqueue generic async requests 

Enqueue generic async requests rather than ablkcipher requests
in the driver's queue

Signed-off-by: Uri Simchoni <uri@jdland.co.il>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Uri Simchoni 2010-04-08 19:27:33 +03:00 committed by Herbert Xu
parent 15d4dd3594
commit 3b61a90502
1 changed files with 24 additions and 19 deletions
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43
drivers/crypto/mv_cesa.c
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@ -39,6 +39,7 @@ enum engine_status {
* @sg_src_left: bytes left in src to process (scatter list)
* @src_start: offset to add to src start position (scatter list)
* @crypt_len: length of current crypt process
* @hw_nbytes: total bytes to process in hw for this request
* @sg_dst_left: bytes left dst to process in this scatter list
* @dst_start: offset to add to dst start position (scatter list)
* @total_req_bytes: total number of bytes processed (request).
@ -55,6 +56,7 @@ struct req_progress {
int sg_src_left;
int src_start;
int crypt_len;
int hw_nbytes;
/* dst mostly */
int sg_dst_left;
int dst_start;
@ -71,7 +73,7 @@ struct crypto_priv {
spinlock_t lock;
struct crypto_queue queue;
enum engine_status eng_st;
struct ablkcipher_request *cur_req;
struct crypto_async_request *cur_req;
struct req_progress p;
int max_req_size;
int sram_size;
@ -175,18 +177,18 @@ static void copy_src_to_buf(struct req_progress *p, char *dbuf, int len)
}
}
static void setup_data_in(struct ablkcipher_request *req)
static void setup_data_in(void)
{
struct req_progress *p = &cpg->p;
p->crypt_len =
min((int)req->nbytes - p->total_req_bytes, cpg->max_req_size);
min(p->hw_nbytes - p->total_req_bytes, cpg->max_req_size);
copy_src_to_buf(p, cpg->sram + SRAM_DATA_IN_START,
p->crypt_len);
}
static void mv_process_current_q(int first_block)
{
struct ablkcipher_request *req = cpg->cur_req;
struct ablkcipher_request *req = ablkcipher_request_cast(cpg->cur_req);
struct mv_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
struct mv_req_ctx *req_ctx = ablkcipher_request_ctx(req);
struct sec_accel_config op;
@ -229,7 +231,7 @@ static void mv_process_current_q(int first_block)
ENC_P_DST(SRAM_DATA_OUT_START);
op.enc_key_p = SRAM_DATA_KEY_P;
setup_data_in(req);
setup_data_in();
op.enc_len = cpg->p.crypt_len;
memcpy(cpg->sram + SRAM_CONFIG, &op,
sizeof(struct sec_accel_config));
@ -246,7 +248,7 @@ static void mv_process_current_q(int first_block)
static void mv_crypto_algo_completion(void)
{
struct ablkcipher_request *req = cpg->cur_req;
struct ablkcipher_request *req = ablkcipher_request_cast(cpg->cur_req);
struct mv_req_ctx *req_ctx = ablkcipher_request_ctx(req);
if (req_ctx->op != COP_AES_CBC)
@ -257,7 +259,7 @@ static void mv_crypto_algo_completion(void)
static void dequeue_complete_req(void)
{
struct ablkcipher_request *req = cpg->cur_req;
struct crypto_async_request *req = cpg->cur_req;
void *buf;
int ret;
int need_copy_len = cpg->p.crypt_len;
@ -289,7 +291,7 @@ static void dequeue_complete_req(void)
} while (need_copy_len > 0);
BUG_ON(cpg->eng_st != ENGINE_W_DEQUEUE);
if (cpg->p.total_req_bytes < req->nbytes) {
if (cpg->p.total_req_bytes < cpg->p.hw_nbytes) {
/* process next scatter list entry */
cpg->eng_st = ENGINE_BUSY;
mv_process_current_q(0);
@ -299,7 +301,7 @@ static void dequeue_complete_req(void)
mv_crypto_algo_completion();
cpg->eng_st = ENGINE_IDLE;
local_bh_disable();
req->base.complete(&req->base, 0);
req->complete(req, 0);
local_bh_enable();
}
}
@ -323,16 +325,19 @@ static int count_sgs(struct scatterlist *sl, unsigned int total_bytes)
static void mv_enqueue_new_req(struct ablkcipher_request *req)
{
struct req_progress *p = &cpg->p;
int num_sgs;
cpg->cur_req = req;
memset(&cpg->p, 0, sizeof(struct req_progress));
cpg->cur_req = &req->base;
memset(p, 0, sizeof(struct req_progress));
p->hw_nbytes = req->nbytes;
num_sgs = count_sgs(req->src, req->nbytes);
sg_miter_start(&cpg->p.src_sg_it, req->src, num_sgs, SG_MITER_FROM_SG);
sg_miter_start(&p->src_sg_it, req->src, num_sgs, SG_MITER_FROM_SG);
num_sgs = count_sgs(req->dst, req->nbytes);
sg_miter_start(&cpg->p.dst_sg_it, req->dst, num_sgs, SG_MITER_TO_SG);
sg_miter_start(&p->dst_sg_it, req->dst, num_sgs, SG_MITER_TO_SG);
mv_process_current_q(1);
}
@ -378,13 +383,13 @@ static int queue_manag(void *data)
return 0;
}
static int mv_handle_req(struct ablkcipher_request *req)
static int mv_handle_req(struct crypto_async_request *req)
{
unsigned long flags;
int ret;
spin_lock_irqsave(&cpg->lock, flags);
ret = ablkcipher_enqueue_request(&cpg->queue, req);
ret = crypto_enqueue_request(&cpg->queue, req);
spin_unlock_irqrestore(&cpg->lock, flags);
wake_up_process(cpg->queue_th);
return ret;
@ -397,7 +402,7 @@ static int mv_enc_aes_ecb(struct ablkcipher_request *req)
req_ctx->op = COP_AES_ECB;
req_ctx->decrypt = 0;
return mv_handle_req(req);
return mv_handle_req(&req->base);
}
static int mv_dec_aes_ecb(struct ablkcipher_request *req)
@ -409,7 +414,7 @@ static int mv_dec_aes_ecb(struct ablkcipher_request *req)
req_ctx->decrypt = 1;
compute_aes_dec_key(ctx);
return mv_handle_req(req);
return mv_handle_req(&req->base);
}
static int mv_enc_aes_cbc(struct ablkcipher_request *req)
@ -419,7 +424,7 @@ static int mv_enc_aes_cbc(struct ablkcipher_request *req)
req_ctx->op = COP_AES_CBC;
req_ctx->decrypt = 0;
return mv_handle_req(req);
return mv_handle_req(&req->base);
}
static int mv_dec_aes_cbc(struct ablkcipher_request *req)
@ -431,7 +436,7 @@ static int mv_dec_aes_cbc(struct ablkcipher_request *req)
req_ctx->decrypt = 1;
compute_aes_dec_key(ctx);
return mv_handle_req(req);
return mv_handle_req(&req->base);
}
static int mv_cra_init(struct crypto_tfm *tfm)