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