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authorLokesh Vutla <lokeshvutla@ti.com>2016-08-04 13:28:43 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2016-09-13 20:22:06 +0800
commit164f3ef301bff9741a00ff7015f9d51f1b864201 (patch)
tree8619ca311244efbd0f77bce041bc17ba7f3a4118 /drivers/crypto/omap-aes.c
parentf303b455bb95233297c179b525a851a792e469b2 (diff)
downloadlinux-164f3ef301bff9741a00ff7015f9d51f1b864201.tar.bz2
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: Lokesh Vutla <lokeshvutla@ti.com> [t-kristo@ti.com: forward ported to 4.7 kernel] Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/omap-aes.c')
-rw-r--r--drivers/crypto/omap-aes.c20
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index f2aae4a3cbcc..7615026709fe 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -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;
- }
- ctx->dd = dd;
- } else {
- /* already found before */
- dd = ctx->dd;
- }
+ dd = list_first_entry(&dev_list, struct omap_aes_dev, list);
+ list_move_tail(&dd->list, &dev_list);
+ ctx->dd = 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;