static void mv_start_new_hash_req(struct ahash_request *req)
{
struct req_progress *p = &cpg->p;
struct mv_req_hash_ctx *ctx = ahash_request_ctx(req);
const struct mv_tfm_hash_ctx *tfm_ctx = crypto_tfm_ctx(req->base.tfm);
int num_sgs, hw_bytes, old_extra_bytes, rc;
cpg->cur_req = &req->base;
memset(p, 0, sizeof(struct req_progress));
hw_bytes = req->nbytes + ctx->extra_bytes;
old_extra_bytes = ctx->extra_bytes;
if (unlikely(ctx->extra_bytes)) {
memcpy(cpg->sram + SRAM_DATA_IN_START, ctx->buffer,
ctx->extra_bytes);
p->crypt_len = ctx->extra_bytes;
}
memcpy(cpg->sram + SRAM_HMAC_IV_IN, tfm_ctx->ivs, sizeof(tfm_ctx->ivs));
if (unlikely(!ctx->first_hash)) {
writel(ctx->state[0], cpg->reg + DIGEST_INITIAL_VAL_A);
writel(ctx->state[1], cpg->reg + DIGEST_INITIAL_VAL_B);
writel(ctx->state[2], cpg->reg + DIGEST_INITIAL_VAL_C);
writel(ctx->state[3], cpg->reg + DIGEST_INITIAL_VAL_D);
writel(ctx->state[4], cpg->reg + DIGEST_INITIAL_VAL_E);
}
ctx->extra_bytes = hw_bytes % SHA1_BLOCK_SIZE;
if (ctx->extra_bytes != 0
&& (!ctx->last_chunk || ctx->count > MAX_HW_HASH_SIZE))
hw_bytes -= ctx->extra_bytes;
else
ctx->extra_bytes = 0;
num_sgs = count_sgs(req->src, req->nbytes);
sg_miter_start(&p->src_sg_it, req->src, num_sgs, SG_MITER_FROM_SG);
if (hw_bytes) {
p->hw_nbytes = hw_bytes;
p->complete = mv_hash_algo_completion;
p->process = mv_process_hash_current;
mv_process_hash_current(1);
} else {
copy_src_to_buf(p, ctx->buffer + old_extra_bytes,
ctx->extra_bytes - old_extra_bytes);
sg_miter_stop(&p->src_sg_it);
if (ctx->last_chunk)
rc = mv_hash_final_fallback(req);
else
rc = 0;
cpg->eng_st = ENGINE_IDLE;
local_bh_disable();
req->base.complete(&req->base, rc);
local_bh_enable();
}
}
static void setup_data_in(void)
{
struct req_progress *p = &cpg->p;
int data_in_sram =
min(p->hw_nbytes - p->hw_processed_bytes, cpg->max_req_size);
copy_src_to_buf(p, cpg->sram + SRAM_DATA_IN_START + p->crypt_len,
data_in_sram - p->crypt_len);
p->crypt_len = data_in_sram;
}
static void setup_data_in(int key_len)
{
struct req_progress *p = &cpg->p;
int data_in_sram =
min(p->hw_nbytes - p->hw_processed_bytes, cpg->max_req_size);
//printk("\n hw_nbytes = %d hw_p_bytes = %d max_req_size = %d p->crypt_len= %d\n",p->hw_nbytes, p->hw_processed_bytes, cpg->max_req_size, p->crypt_len);
copy_src_to_buf(p, cpg->in_buf + IN_DATA_P(key_len) + p->crypt_len,
data_in_sram - p->crypt_len);
p->crypt_len = data_in_sram;
}
static void mv_hash_algo_completion(void)
{
struct ahash_request *req = ahash_request_cast(cpg->cur_req);
struct mv_req_hash_ctx *ctx = ahash_request_ctx(req);
if (ctx->extra_bytes)
copy_src_to_buf(&cpg->p, ctx->buffer, ctx->extra_bytes);
sg_miter_stop(&cpg->p.src_sg_it);
ctx->state[0] = readl(cpg->reg + DIGEST_INITIAL_VAL_A);
ctx->state[1] = readl(cpg->reg + DIGEST_INITIAL_VAL_B);
ctx->state[2] = readl(cpg->reg + DIGEST_INITIAL_VAL_C);
ctx->state[3] = readl(cpg->reg + DIGEST_INITIAL_VAL_D);
ctx->state[4] = readl(cpg->reg + DIGEST_INITIAL_VAL_E);
if (likely(ctx->last_chunk)) {
if (likely(ctx->count <= MAX_HW_HASH_SIZE)) {
memcpy(req->result, cpg->sram + SRAM_DIGEST_BUF,
crypto_ahash_digestsize(crypto_ahash_reqtfm
(req)));
} else
mv_hash_final_fallback(req);
}
}
