diff options
| author | Tero Kristo <t-kristo@ti.com> | 2016-09-19 17:22:16 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-09-22 12:32:50 +0200 |
| commit | 2c5bd1ef1511ecf3df24a1f2ee94c7f39d3318e1 (patch) | |
| tree | b58ad53b362ab2e94c22a7c156cfd894ffc1c80b /drivers/crypto | |
| parent | crypto: omap-sham - add support functions for sg based data handling (diff) | |
| download | linux-2c5bd1ef1511ecf3df24a1f2ee94c7f39d3318e1.tar.xz linux-2c5bd1ef1511ecf3df24a1f2ee94c7f39d3318e1.zip | |
crypto: omap-sham - change the DMA threshold value to a define
Currently the threshold value was hardcoded in the driver. Having a define
for it makes it easier to configure.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/omap-sham.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 855898977d38..5c95bf97c132 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -137,6 +137,7 @@ #define OMAP_ALIGNED __attribute__((aligned(sizeof(u32)))) #define BUFLEN PAGE_SIZE +#define OMAP_SHA_DMA_THRESHOLD 256 struct omap_sham_dev; @@ -1435,10 +1436,11 @@ static int omap_sham_final(struct ahash_request *req) /* * 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 buffersize is less than DMA_THRESHOLD, we use fallback + * SW encoding, as using DMA + HW in this case doesn't provide + * any benefit. */ - if (!ctx->digcnt && ctx->bufcnt < 240) + if (!ctx->digcnt && ctx->bufcnt < OMAP_SHA_DMA_THRESHOLD) return omap_sham_final_shash(req); else if (ctx->bufcnt) return omap_sham_enqueue(req, OP_FINAL); |