diff options
| author | Gary R Hook <ghook@amd.com> | 2017-03-10 12:28:18 -0600 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-03-16 17:43:08 +0800 |
| commit | 7c468447f40645fbf2a033dfdaa92b1957130d50 (patch) | |
| tree | c9cd9c1ca6222a07af4a3eff12651d7c0f81eadd /include | |
| parent | 28b62b1458685d8f68f67d9b2d511bf8fa32b746 (diff) | |
| download | linux-7c468447f40645fbf2a033dfdaa92b1957130d50.tar.bz2 | |
crypto: ccp - Assign DMA commands to the channel's CCP
The CCP driver generally uses a round-robin approach when
assigning operations to available CCPs. For the DMA engine,
however, the DMA mappings of the SGs are associated with a
specific CCP. When an IOMMU is enabled, the IOMMU is
programmed based on this specific device.
If the DMA operations are not performed by that specific
CCP then addressing errors and I/O page faults will occur.
Update the CCP driver to allow a specific CCP device to be
requested for an operation and use this in the DMA engine
support.
Cc: <stable@vger.kernel.org> # 4.9.x-
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ccp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/ccp.h b/include/linux/ccp.h index c71dd8fa5764..c41b8d99dd0e 100644 --- a/include/linux/ccp.h +++ b/include/linux/ccp.h @@ -556,7 +556,7 @@ enum ccp_engine { * struct ccp_cmd - CCP operation request * @entry: list element (ccp driver use only) * @work: work element used for callbacks (ccp driver use only) - * @ccp: CCP device to be run on (ccp driver use only) + * @ccp: CCP device to be run on * @ret: operation return code (ccp driver use only) * @flags: cmd processing flags * @engine: CCP operation to perform |