diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
index 12fd49950f471..d77ba2f122427 100644
--- a/drivers/crypto/Kconfig
+++ b/drivers/crypto/Kconfig
@@ -314,6 +314,7 @@ config CRYPTO_DEV_OMAP_DES
depends on ARCH_OMAP2PLUS
select CRYPTO_DES
select CRYPTO_BLKCIPHER
+ select CRYPTO_ENGINE
help
OMAP processors have DES/3DES module accelerator. Select this if you
want to use the OMAP module for DES and 3DES algorithms. Currently
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index dd7b93f2f94ce..b9a465fc2300e 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -39,6 +39,7 @@
#include <linux/interrupt.h>
#include <crypto/scatterwalk.h>
#include <crypto/des.h>
+#include <crypto/algapi.h>
#define DST_MAXBURST 2
@@ -132,14 +133,10 @@ struct omap_des_dev {
unsigned long flags;
int err;
- /* spinlock used for queues */
- spinlock_t lock;
- struct crypto_queue queue;
-
struct tasklet_struct done_task;
- struct tasklet_struct queue_task;
struct ablkcipher_request *req;
+ struct crypto_engine *engine;
/*
* total is used by PIO mode for book keeping so introduce
* variable total_save as need it to calc page_order
@@ -520,9 +517,7 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err)
pr_debug("err: %d\n", err);
pm_runtime_put(dd->dev);
- dd->flags &= ~FLAGS_BUSY;
-
- req->base.complete(&req->base, err);
+ crypto_finalize_request(dd->engine, req, err);
}
static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
@@ -585,34 +580,24 @@ static int omap_des_copy_sgs(struct omap_des_dev *dd)
}
static int omap_des_handle_queue(struct omap_des_dev *dd,
- struct ablkcipher_request *req)
+ struct ablkcipher_request *req)
{
- struct crypto_async_request *async_req, *backlog;
- struct omap_des_ctx *ctx;
- struct omap_des_reqctx *rctx;
- unsigned long flags;
- int err, ret = 0;
-
- spin_lock_irqsave(&dd->lock, flags);
if (req)
- ret = ablkcipher_enqueue_request(&dd->queue, req);
- if (dd->flags & FLAGS_BUSY) {
- spin_unlock_irqrestore(&dd->lock, flags);
- return ret;
- }
- backlog = crypto_get_backlog(&dd->queue);
- async_req = crypto_dequeue_request(&dd->queue);
- if (async_req)
- dd->flags |= FLAGS_BUSY;
- spin_unlock_irqrestore(&dd->lock, flags);
+ return crypto_transfer_request_to_engine(dd->engine, req);
- if (!async_req)
- return ret;
+ return 0;
+}
- if (backlog)
- backlog->complete(backlog, -EINPROGRESS);
+static int omap_des_prepare_req(struct crypto_engine *engine,
+ struct ablkcipher_request *req)
+{
+ struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
+ crypto_ablkcipher_reqtfm(req));
+ struct omap_des_dev *dd = omap_des_find_dev(ctx);
+ struct omap_des_reqctx *rctx;
- req = ablkcipher_request_cast(async_req);
+ if (!dd)
+ return -ENODEV;
/* assign new request to device */
dd->req = req;
@@ -642,16 +627,20 @@ static int omap_des_handle_queue(struct omap_des_dev *dd,
dd->ctx = ctx;
ctx->dd = dd;
- err = omap_des_write_ctrl(dd);
- if (!err)
- err = omap_des_crypt_dma_start(dd);
- if (err) {
- /* des_task will not finish it, so do it here */
- omap_des_finish_req(dd, err);
- tasklet_schedule(&dd->queue_task);
- }
+ return omap_des_write_ctrl(dd);
+}
- return ret; /* return ret, which is enqueue return value */
+static int omap_des_crypt_req(struct crypto_engine *engine,
+ struct ablkcipher_request *req)
+{
+ struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
+ crypto_ablkcipher_reqtfm(req));
+ struct omap_des_dev *dd = omap_des_find_dev(ctx);
+
+ if (!dd)
+ return -ENODEV;
+
+ return omap_des_crypt_dma_start(dd);
}
static void omap_des_done_task(unsigned long data)
@@ -683,18 +672,10 @@ static void omap_des_done_task(unsigned long data)
}
omap_des_finish_req(dd, 0);
- omap_des_handle_queue(dd, NULL);
pr_debug("exit\n");
}
-static void omap_des_queue_task(unsigned long data)
-{
- struct omap_des_dev *dd = (struct omap_des_dev *)data;
-
- omap_des_handle_queue(dd, NULL);
-}
-
static int omap_des_crypt(struct ablkcipher_request *req, unsigned long mode)
{
struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
@@ -1062,9 +1043,6 @@ static int omap_des_probe(struct platform_device *pdev)
dd->dev = dev;
platform_set_drvdata(pdev, dd);
- spin_lock_init(&dd->lock);
- crypto_init_queue(&dd->queue, OMAP_DES_QUEUE_LENGTH);
-
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "no MEM resource info\n");
@@ -1103,7 +1081,6 @@ static int omap_des_probe(struct platform_device *pdev)
(reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);
tasklet_init(&dd->done_task, omap_des_done_task, (unsigned long)dd);
- tasklet_init(&dd->queue_task, omap_des_queue_task, (unsigned long)dd);
err = omap_des_dma_init(dd);
if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {
@@ -1144,7 +1121,21 @@ static int omap_des_probe(struct platform_device *pdev)
}
}
+ /* Initialize des crypto engine */
+ dd->engine = crypto_engine_alloc_init(dev, 1);
+ if (!dd->engine)
+ goto err_algs;
+
+ dd->engine->prepare_request = omap_des_prepare_req;
+ dd->engine->crypt_one_request = omap_des_crypt_req;
+ err = crypto_engine_start(dd->engine);
+ if (err)
+ goto err_engine;
+
return 0;
+
+err_engine:
+ crypto_engine_exit(dd->engine);
err_algs:
for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
@@ -1154,7 +1145,6 @@ static int omap_des_probe(struct platform_device *pdev)
omap_des_dma_cleanup(dd);
err_irq:
tasklet_kill(&dd->done_task);
- tasklet_kill(&dd->queue_task);
err_get:
pm_runtime_disable(dev);
err_res:
@@ -1182,7 +1172,6 @@ static int omap_des_remove(struct platform_device *pdev)
&dd->pdata->algs_info[i].algs_list[j]);
tasklet_kill(&dd->done_task);
- tasklet_kill(&dd->queue_task);
omap_des_dma_cleanup(dd);
pm_runtime_disable(dd->dev);
dd = NULL;