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authorHoria Geant? <horia.geanta@nxp.com>2016-01-12 18:14:10 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2016-01-25 17:39:03 +0300
commit624144a7eb2c9abcf76722d29f983cdf9801bb2e (patch)
treed84f55d2225a6a40a7c63769a8da9b0f3266d9f4 /drivers/crypto
parentba171135bfa584096ca5ee42c9527777b7d48474 (diff)
downloadlinux-624144a7eb2c9abcf76722d29f983cdf9801bb2e.tar.xz
crypto: caam - enable LARGE_BURST for enhancing DMA transactions size
Increasing CAAM DMA engine transaction size either -reduces the number of required transactions or -adds the ability to transfer more data with same transaction count Signed-off-by: Horia Geant? <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/caam/ctrl.c2
-rw-r--r--drivers/crypto/caam/regs.h3
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index 69d4a1326fee..44d30b45f3cc 100644
--- a/drivers/crypto/caam/ctrl.c
+++ b/drivers/crypto/caam/ctrl.c
@@ -534,7 +534,7 @@ static int caam_probe(struct platform_device *pdev)
* long pointers in master configuration register
*/
clrsetbits_32(&ctrl->mcr, MCFGR_AWCACHE_MASK, MCFGR_AWCACHE_CACH |
- MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE |
+ MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | MCFGR_LARGE_BURST |
(sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0));
/*
diff --git a/drivers/crypto/caam/regs.h b/drivers/crypto/caam/regs.h
index a8a79975682f..0ba9c40597dc 100644
--- a/drivers/crypto/caam/regs.h
+++ b/drivers/crypto/caam/regs.h
@@ -455,7 +455,8 @@ struct caam_ctrl {
#define MCFGR_AXIPIPE_MASK (0xf << MCFGR_AXIPIPE_SHIFT)
#define MCFGR_AXIPRI 0x00000008 /* Assert AXI priority sideband */
-#define MCFGR_BURST_64 0x00000001 /* Max burst size */
+#define MCFGR_LARGE_BURST 0x00000004 /* 128/256-byte burst size */
+#define MCFGR_BURST_64 0x00000001 /* 64-byte burst size */
/* JRSTART register offsets */
#define JRSTART_JR0_START 0x00000001 /* Start Job ring 0 */