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gpu: nvgpu: use coherent aperture for coherent buffers

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Use sysmem_coherent aperture if the buffer mappings are requested
to be IO coherent. Use sysmem_noncoherent aperture otherwise. This
is implemented by adding a new coherent field to the GMMU attrs
struct.

Jira GPUT19X-17
Bug 1651331
Bug 200283998

Change-Id: I5cfb71b5913d4db50ebf10331b19f5a4216456bf
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master/r/1514438
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
This commit is contained in:
Deepak Nibade
2017-07-05 15:41:15 +05:30
committed by mobile promotions
parent 8bdb74786c
commit d479a781c6
5 changed files with 11 additions and 9 deletions
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6
include/uapi/linux/nvgpu-t18x.h
View File

@@ -24,12 +24,6 @@
#ifndef _UAPI__LINUX_NVGPU_T18X_IOCTL_H_
#define _UAPI__LINUX_NVGPU_T18X_IOCTL_H_
/*
* this flag is used in struct nvgpu_as_map_buffer_ex_args
* to specify IO coherence
*/
#define NVGPU_AS_MAP_BUFFER_FLAGS_IO_COHERENT (1 << 4)
/*
* this flag is used in struct nvgpu_alloc_gpfifo_args
* to enable re-playable faults for that channel

1
include/uapi/linux/nvgpu.h
View File

@@ -1744,6 +1744,7 @@ struct nvgpu_as_map_buffer_args {
__u32 flags; /* in/out */
#define NVGPU_AS_MAP_BUFFER_FLAGS_FIXED_OFFSET (1 << 0)
#define NVGPU_AS_MAP_BUFFER_FLAGS_CACHEABLE (1 << 2)
#define NVGPU_AS_MAP_BUFFER_FLAGS_IO_COHERENT (1 << 4)
#define NVGPU_AS_MAP_BUFFER_FLAGS_UNMAPPED_PTE (1 << 5)
#define NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS (1 << 6)
__u32 reserved; /* in */