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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2014-07-10 10:58:35 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-07-23 21:28:38 +0800 |
| commit | 126ae9adc1ec8d9006542f1a5e474b0183845e21 (patch) | |
| tree | f3ee814b261aa440feae1b5785f797aaa16cced7 /drivers/crypto/ccp/ccp-dev.h | |
| parent | 96956aef2ff5521af44d6cb896c967d025360ead (diff) | |
| download | linux-126ae9adc1ec8d9006542f1a5e474b0183845e21.tar.bz2 | |
crypto: ccp - Base AXI DMA cache settings on device tree
The default cache operations for ARM64 were changed during 3.15.
To use coherent operations a "dma-coherent" device tree property
is required. If that property is not present in the device tree
node then the non-coherent operations are assigned for the device.
Add support to the ccp driver to assign the AXI DMA cache settings
based on whether the "dma-coherent" property is present in the device
node. If present, use settings that work with the caches. If not
present, use settings that do not look at the caches.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/ccp/ccp-dev.h')
| -rw-r--r-- | drivers/crypto/ccp/ccp-dev.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-dev.h b/drivers/crypto/ccp/ccp-dev.h index 1c5651b09506..62ff35a6b9ec 100644 --- a/drivers/crypto/ccp/ccp-dev.h +++ b/drivers/crypto/ccp/ccp-dev.h @@ -30,6 +30,7 @@ #define TRNG_RETRIES 10 +#define CACHE_NONE 0x00 #define CACHE_WB_NO_ALLOC 0xb7 @@ -255,6 +256,9 @@ struct ccp_device { /* Suspend support */ unsigned int suspending; wait_queue_head_t suspend_queue; + + /* DMA caching attribute support */ + unsigned int axcache; }; |