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Commit 164f3ef3 authored by Lokesh Vutla's avatar Lokesh Vutla Committed by Herbert Xu
Browse files

crypto: omap-aes - Add support for multiple cores 



Some SoCs like omap4/omap5/dra7 contain multiple AES crypto accelerator
cores. Adapt the driver to support this. The driver picks the last used
device from a list of AES devices.

Signed-off-by: default avatarLokesh Vutla <lokeshvutla@ti.com>
[t-kristo@ti.com: forward ported to 4.7 kernel]
Signed-off-by: default avatarTero Kristo <t-kristo@ti.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent f303b455

drivers/crypto/omap-aes.c

+6 −14
Original line number Diff line number Diff line
@@ -330,20 +330,12 @@ static void omap_aes_dma_stop(struct omap_aes_dev *dd) 


static struct omap_aes_dev *omap_aes_find_dev(struct omap_aes_ctx *ctx)

{

	struct omap_aes_dev *dd = NULL, *tmp;

	struct omap_aes_dev *dd;



	spin_lock_bh(&list_lock);

	if (!ctx->dd) {

		list_for_each_entry(tmp, &dev_list, list) {

			/* FIXME: take fist available aes core */

			dd = tmp;

			break;

		}

	dd = list_first_entry(&dev_list, struct omap_aes_dev, list);

	list_move_tail(&dd->list, &dev_list);

	ctx->dd = dd;

	} else {

		/* already found before */

		dd = ctx->dd;

	}

	spin_unlock_bh(&list_lock);



	return dd;
@@ -616,7 +608,7 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, 
{

	struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(

			crypto_ablkcipher_reqtfm(req));

	struct omap_aes_dev *dd = omap_aes_find_dev(ctx);

	struct omap_aes_dev *dd = ctx->dd;

	struct omap_aes_reqctx *rctx;



	if (!dd)
@@ -662,7 +654,7 @@ static int omap_aes_crypt_req(struct crypto_engine *engine, 
{

	struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(

			crypto_ablkcipher_reqtfm(req));

	struct omap_aes_dev *dd = omap_aes_find_dev(ctx);

	struct omap_aes_dev *dd = ctx->dd;



	if (!dd)

		return -ENODEV;