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gpu: nvgpu: Use preallocated VPR buffer

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To prevent deadlock while allocating VPR in nvgpu, allocate all the
needed VPR memory at probe time and use an internal allocator to
hand out space for VPR buffers.

Change-Id: I584b9a0f746d5d1dec021cdfbd6f26b4b92e4412
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1655324
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Terje Bergstrom
2018-02-09 14:42:07 -08:00
committed by mobile promotions
parent 1582bdb5ee
commit ec00a6c2db
6 changed files with 77 additions and 81 deletions
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5
drivers/gpu/nvgpu/common/linux/platform_gk20a.h
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@@ -32,7 +32,8 @@ struct gk20a_scale_profile;
struct secure_page_buffer {
void (*destroy)(struct gk20a *, struct secure_page_buffer *);
size_t size;
u64 iova;
dma_addr_t phys;
size_t used;
};
struct gk20a_platform {
@@ -148,6 +149,8 @@ struct gk20a_platform {
/* Powerdown platform dependencies */
void (*idle)(struct device *dev);
/* Preallocated VPR buffer for kernel */
size_t secure_buffer_size;
struct secure_page_buffer secure_buffer;
/* Device is going to be suspended */