From 2eb6dcb4694c8b83e22c50d9fd4d3fdd85b93c46 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Thu, 16 Oct 2014 15:15:11 +0300 Subject: gpu: nvgpu: Implement 64k large page support Implement support for 64kB large page size. Add an API to create an address space via IOCTL so that we can accept flags, and assign one flag for enabling 64kB large page size. Also adds APIs to set per-context large page size. This is possible only on Maxwell, so return error if caller tries to set large page size on Kepler. Default large page size is still 128kB. Change-Id: I20b51c8f6d4a984acae8411ace3de9000c78e82f Signed-off-by: Terje Bergstrom --- include/uapi/linux/nvgpu.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h index 694c497c..c9e50b36 100644 --- a/include/uapi/linux/nvgpu.h +++ b/include/uapi/linux/nvgpu.h @@ -175,6 +175,12 @@ struct nvgpu_gpu_mark_compressible_write_args { __u32 reserved[3]; /* must be zero */ }; +struct nvgpu_alloc_as_args { + __u32 big_page_size; + __s32 as_fd; + __u64 reserved; /* must be zero */ +}; + #define NVGPU_GPU_IOCTL_ZCULL_GET_CTX_SIZE \ _IOR(NVGPU_GPU_IOCTL_MAGIC, 1, struct nvgpu_gpu_zcull_get_ctx_size_args) #define NVGPU_GPU_IOCTL_ZCULL_GET_INFO \ @@ -189,9 +195,11 @@ struct nvgpu_gpu_mark_compressible_write_args { _IOWR(NVGPU_GPU_IOCTL_MAGIC, 6, struct nvgpu_gpu_prepare_compressible_read_args) #define NVGPU_GPU_IOCTL_MARK_COMPRESSIBLE_WRITE \ _IOWR(NVGPU_GPU_IOCTL_MAGIC, 7, struct nvgpu_gpu_mark_compressible_write_args) +#define NVGPU_GPU_IOCTL_ALLOC_AS \ + _IOWR(NVGPU_GPU_IOCTL_MAGIC, 8, struct nvgpu_alloc_as_args) #define NVGPU_GPU_IOCTL_LAST \ - _IOC_NR(NVGPU_GPU_IOCTL_MARK_COMPRESSIBLE_WRITE) + _IOC_NR(NVGPU_GPU_IOCTL_ALLOC_AS) #define NVGPU_GPU_IOCTL_MAX_ARG_SIZE \ sizeof(struct nvgpu_gpu_prepare_compressible_read_args) -- cgit v1.2.2