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authorKonsta Holtta <kholtta@nvidia.com>2016-05-16 04:33:38 -0400
committerTerje Bergstrom <tbergstrom@nvidia.com>2016-05-24 15:39:06 -0400
commit3e431e26c5c3aba6da8a6555ec3d7b7df53f534a (patch)
treede7baabb5bbc4a5d27af36d62c00827b7bad3f54 /include/uapi
parentdc7af18bf8056c213165d4cd1c55ea0fba9f1341 (diff)
gpu: nvgpu: add PRAMIN support for mem accessors
To support vidmem, implement a way to access buffers via the PRAMIN window instead of just kernel-mapped sysmem buffers for iGPU as of now. Depending on the buffer aperture, choose between the two access types in the buffer memory accessor functions. vmap()/vunmap() pairs are no-ops for buffers that can't be cpu-mapped. Two uses of DMA_ATTR_READ_ONLY are removed in the ucode loading path to support writing to them too via the indirection in addition to cpu. JIRA DNVGPU-23 Change-Id: I282dba6741c6b8224bc12e69c1fb3936bde7e6ed Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/1141314 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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