drivers/crypto/marvell/cesa/cesa.c

Source file repositories/reference/linux-study-clean/drivers/crypto/marvell/cesa/cesa.c

File Facts

System
Linux kernel
Corpus path
drivers/crypto/marvell/cesa/cesa.c
Extension
.c
Size
14358 bytes
Lines
581
Domain
Driver Families
Bucket
drivers/crypto
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

while (true) {
			req = mv_cesa_engine_dequeue_complete_request(engine);
			if (!req)
				break;

			ctx = crypto_tfm_ctx(req->tfm);
			mv_cesa_complete_req(ctx, req, 0);
		}
	}

	return ret;
}

int mv_cesa_queue_req(struct crypto_async_request *req,
		      struct mv_cesa_req *creq)
{
	int ret;
	struct mv_cesa_engine *engine = creq->engine;

	spin_lock_bh(&engine->lock);
	ret = crypto_enqueue_request(&engine->queue, req);
	if ((mv_cesa_req_get_type(creq) == CESA_DMA_REQ) &&
	    (ret == -EINPROGRESS || ret == -EBUSY))
		mv_cesa_tdma_chain(engine, creq);
	spin_unlock_bh(&engine->lock);

	if (ret != -EINPROGRESS)
		return ret;

	mv_cesa_rearm_engine(engine);

	return -EINPROGRESS;
}

static int mv_cesa_add_algs(struct mv_cesa_dev *cesa)
{
	int ret;
	int i, j;

	for (i = 0; i < cesa->caps->ncipher_algs; i++) {
		ret = crypto_register_skcipher(cesa->caps->cipher_algs[i]);
		if (ret)
			goto err_unregister_crypto;
	}

	for (i = 0; i < cesa->caps->nahash_algs; i++) {
		ret = crypto_register_ahash(cesa->caps->ahash_algs[i]);
		if (ret)
			goto err_unregister_ahash;
	}

	return 0;

err_unregister_ahash:
	for (j = 0; j < i; j++)
		crypto_unregister_ahash(cesa->caps->ahash_algs[j]);
	i = cesa->caps->ncipher_algs;

err_unregister_crypto:
	for (j = 0; j < i; j++)
		crypto_unregister_skcipher(cesa->caps->cipher_algs[j]);

	return ret;
}

static void mv_cesa_remove_algs(struct mv_cesa_dev *cesa)
{
	int i;

	for (i = 0; i < cesa->caps->nahash_algs; i++)
		crypto_unregister_ahash(cesa->caps->ahash_algs[i]);

	for (i = 0; i < cesa->caps->ncipher_algs; i++)
		crypto_unregister_skcipher(cesa->caps->cipher_algs[i]);
}

static struct skcipher_alg *orion_cipher_algs[] = {
	&mv_cesa_ecb_des_alg,
	&mv_cesa_cbc_des_alg,
	&mv_cesa_ecb_des3_ede_alg,
	&mv_cesa_cbc_des3_ede_alg,
	&mv_cesa_ecb_aes_alg,
	&mv_cesa_cbc_aes_alg,
};

static struct ahash_alg *orion_ahash_algs[] = {
	&mv_md5_alg,
	&mv_sha1_alg,
	&mv_ahmac_md5_alg,
	&mv_ahmac_sha1_alg,

Annotation

Implementation Notes