diff options
| author | Horia Geant? <horia.geanta@nxp.com> | 2016-01-12 18:59:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-20 01:28:36 +0300 |
| commit | a64021e87e736f7c52dfcf79c016c5b742b48ad6 (patch) | |
| tree | f5dfa734340c0e50b320a23065d6a567be2b011f | |
| parent | 4bbf076a84d0c8581b447d237b5112e39637f36d (diff) | |
| download | linux-a64021e87e736f7c52dfcf79c016c5b742b48ad6.tar.xz | |
crypto: caam - make write transactions bufferable on PPC platforms
commit e7a7104e432c0db8469ca3568daf4f1d1afe3e73 upstream.
Previous change (see "Fixes" tag) to the MCFGR register
clears AWCACHE[0] ("bufferable" AXI3 attribute) (which is "1" at POR).
This makes all writes non-bufferable, causing a ~ 5% performance drop
for PPC-based platforms.
Rework previous change such that MCFGR[AWCACHE]=4'b0011
(bufferable + cacheable) for all platforms.
Note: For ARM-based platforms, AWCACHE[0] is ignored
by the interconnect IP.
Fixes: f10967495144 ("crypto: caam - fix snooping for write transactions")
Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/crypto/caam/ctrl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index 8abb4bc548cc..69d4a1326fee 100644 --- a/drivers/crypto/caam/ctrl.c +++ b/drivers/crypto/caam/ctrl.c @@ -534,8 +534,8 @@ 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_WDENABLE | (sizeof(dma_addr_t) == sizeof(u64) ? - MCFGR_LONG_PTR : 0)); + MCFGR_AWCACHE_BUFF | MCFGR_WDENABLE | + (sizeof(dma_addr_t) == sizeof(u64) ? MCFGR_LONG_PTR : 0)); /* * Read the Compile Time paramters and SCFGR to determine |