diff options
Diffstat (limited to 'drivers/crypto/omap-sham.c')
-rw-r--r-- | drivers/crypto/omap-sham.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 63464e86f2b1..7fe4eef12fe2 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -100,6 +100,8 @@ #define DEFAULT_TIMEOUT_INTERVAL HZ +#define DEFAULT_AUTOSUSPEND_DELAY 1000 + /* mostly device flags */ #define FLAGS_BUSY 0 #define FLAGS_FINAL 1 @@ -173,7 +175,7 @@ struct omap_sham_ctx { struct omap_sham_hmac_ctx base[0]; }; -#define OMAP_SHAM_QUEUE_LENGTH 1 +#define OMAP_SHAM_QUEUE_LENGTH 10 struct omap_sham_algs_info { struct ahash_alg *algs_list; @@ -813,7 +815,6 @@ static int omap_sham_update_dma_stop(struct omap_sham_dev *dd) { struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); - dmaengine_terminate_all(dd->dma_lch); if (ctx->flags & BIT(FLAGS_SG)) { dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); @@ -999,7 +1000,8 @@ static void omap_sham_finish_req(struct ahash_request *req, int err) dd->flags &= ~(BIT(FLAGS_BUSY) | BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) | BIT(FLAGS_DMA_READY) | BIT(FLAGS_OUTPUT_READY)); - pm_runtime_put(dd->dev); + pm_runtime_mark_last_busy(dd->dev); + pm_runtime_put_autosuspend(dd->dev); if (req->base.complete) req->base.complete(&req->base, err); @@ -1093,7 +1095,7 @@ static int omap_sham_update(struct ahash_request *req) ctx->offset = 0; if (ctx->flags & BIT(FLAGS_FINUP)) { - if ((ctx->digcnt + ctx->bufcnt + ctx->total) < 9) { + if ((ctx->digcnt + ctx->bufcnt + ctx->total) < 240) { /* * OMAP HW accel works only with buffers >= 9 * will switch to bypass in final() @@ -1149,9 +1151,13 @@ static int omap_sham_final(struct ahash_request *req) if (ctx->flags & BIT(FLAGS_ERROR)) return 0; /* uncompleted hash is not needed */ - /* OMAP HW accel works only with buffers >= 9 */ - /* HMAC is always >= 9 because ipad == block size */ - if ((ctx->digcnt + ctx->bufcnt) < 9) + /* + * OMAP HW accel works only with buffers >= 9. + * HMAC is always >= 9 because ipad == block size. + * If buffersize is less than 240, we use fallback SW encoding, + * as using DMA + HW in this case doesn't provide any benefit. + */ + if ((ctx->digcnt + ctx->bufcnt) < 240) return omap_sham_final_shash(req); else if (ctx->bufcnt) return omap_sham_enqueue(req, OP_FINAL); @@ -1328,7 +1334,7 @@ static struct ahash_alg algs_sha1_md5[] = { .halg.base = { .cra_name = "sha1", .cra_driver_name = "omap-sha1", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | @@ -1351,7 +1357,7 @@ static struct ahash_alg algs_sha1_md5[] = { .halg.base = { .cra_name = "md5", .cra_driver_name = "omap-md5", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | @@ -1375,7 +1381,7 @@ static struct ahash_alg algs_sha1_md5[] = { .halg.base = { .cra_name = "hmac(sha1)", .cra_driver_name = "omap-hmac-sha1", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | @@ -1400,7 +1406,7 @@ static struct ahash_alg algs_sha1_md5[] = { .halg.base = { .cra_name = "hmac(md5)", .cra_driver_name = "omap-hmac-md5", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC | @@ -1428,7 +1434,7 @@ static struct ahash_alg algs_sha224_sha256[] = { .halg.base = { .cra_name = "sha224", .cra_driver_name = "omap-sha224", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1450,7 +1456,7 @@ static struct ahash_alg algs_sha224_sha256[] = { .halg.base = { .cra_name = "sha256", .cra_driver_name = "omap-sha256", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1473,7 +1479,7 @@ static struct ahash_alg algs_sha224_sha256[] = { .halg.base = { .cra_name = "hmac(sha224)", .cra_driver_name = "omap-hmac-sha224", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1497,7 +1503,7 @@ static struct ahash_alg algs_sha224_sha256[] = { .halg.base = { .cra_name = "hmac(sha256)", .cra_driver_name = "omap-hmac-sha256", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1523,7 +1529,7 @@ static struct ahash_alg algs_sha384_sha512[] = { .halg.base = { .cra_name = "sha384", .cra_driver_name = "omap-sha384", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1545,7 +1551,7 @@ static struct ahash_alg algs_sha384_sha512[] = { .halg.base = { .cra_name = "sha512", .cra_driver_name = "omap-sha512", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1568,7 +1574,7 @@ static struct ahash_alg algs_sha384_sha512[] = { .halg.base = { .cra_name = "hmac(sha384)", .cra_driver_name = "omap-hmac-sha384", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1592,7 +1598,7 @@ static struct ahash_alg algs_sha384_sha512[] = { .halg.base = { .cra_name = "hmac(sha512)", .cra_driver_name = "omap-hmac-sha512", - .cra_priority = 100, + .cra_priority = 400, .cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, @@ -1946,6 +1952,9 @@ static int omap_sham_probe(struct platform_device *pdev) dd->flags |= dd->pdata->flags; + pm_runtime_use_autosuspend(dev); + pm_runtime_set_autosuspend_delay(dev, DEFAULT_AUTOSUSPEND_DELAY); + pm_runtime_enable(dev); pm_runtime_irq_safe(dev); |