From afa31cdd8cc6bb04faeed30b2cc30f5e6be888b5 Mon Sep 17 00:00:00 2001 From: Deepak Nibade Date: Mon, 3 Jul 2017 16:40:44 +0530 Subject: gpu: nvgpu: add support for L3 cache allocation of buffers 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 Reviewed-on: https://git-master/r/1512602 GVS: Gerrit_Virtual_Submit Reviewed-by: Vijayakumar Subbu --- include/uapi/linux/nvgpu-t19x.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/uapi/linux/nvgpu-t19x.h b/include/uapi/linux/nvgpu-t19x.h index 96514a88..bc37bc7c 100644 --- a/include/uapi/linux/nvgpu-t19x.h +++ b/include/uapi/linux/nvgpu-t19x.h @@ -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) -- cgit v1.2.2