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gpu: nvgpu: add support for L3 cache allocation of buffers

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Add gv11b implementation of gpu_phys_addr() that checks the t19x
GMMU attributes struct to determine if L3 allocation should be
enabled. If L3 alloc is enabled then a special physical address
bit is set.

Add flag NVGPU_AS_MAP_BUFFER_FLAGS_L3_ALLOC to struct
nvgpu_as_map_buffer_ex_args so that User space can add a hint to
allocate buffer in L3 cache

Jira GPUT19X-10
Bug 200279508

Change-Id: I1bb9876a670b252980922aa50e3e69b802be137f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master/r/1512602
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-07-03 16:40:44 +05:30
committed by mobile promotions
parent cca0510e47
commit afa31cdd8c
5 changed files with 77 additions and 0 deletions
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6
include/uapi/linux/nvgpu-t19x.h
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@@ -27,6 +27,12 @@
#define NVGPU_GPU_ARCH_GV110 0x00000150
#define NVGPU_GPU_IMPL_GV11B 0x0000000B
/*
* this flag is used in struct nvgpu_as_map_buffer_ex_args
* to provide L3 cache allocation hint
*/
#define NVGPU_AS_MAP_BUFFER_FLAGS_L3_ALLOC (1 << 7)
/* subcontexts are available */
#define NVGPU_GPU_FLAGS_SUPPORT_TSG_SUBCONTEXTS (1ULL << 22)