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

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
...@@ -330,20 +330,12 @@ static void omap_aes_dma_stop(struct omap_aes_dev *dd) ...@@ -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) 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); spin_lock_bh(&list_lock);
if (!ctx->dd) { dd = list_first_entry(&dev_list, struct omap_aes_dev, list);
list_for_each_entry(tmp, &dev_list, list) { list_move_tail(&dd->list, &dev_list);
/* FIXME: take fist available aes core */ ctx->dd = dd;
dd = tmp;
break;
}
ctx->dd = dd;
} else {
/* already found before */
dd = ctx->dd;
}
spin_unlock_bh(&list_lock); spin_unlock_bh(&list_lock);
return dd; return dd;
...@@ -616,7 +608,7 @@ static int omap_aes_prepare_req(struct crypto_engine *engine, ...@@ -616,7 +608,7 @@ static int omap_aes_prepare_req(struct crypto_engine *engine,
{ {
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx( struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req)); 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; struct omap_aes_reqctx *rctx;
if (!dd) if (!dd)
...@@ -662,7 +654,7 @@ static int omap_aes_crypt_req(struct crypto_engine *engine, ...@@ -662,7 +654,7 @@ static int omap_aes_crypt_req(struct crypto_engine *engine,
{ {
struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx( struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
crypto_ablkcipher_reqtfm(req)); crypto_ablkcipher_reqtfm(req));
struct omap_aes_dev *dd = omap_aes_find_dev(ctx); struct omap_aes_dev *dd = ctx->dd;
if (!dd) if (!dd)
return -ENODEV; return -ENODEV;
......
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