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gpu: nvgpu: Move semaphore impl to nvgpu_mem

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Use struct nvgpu_mem for DMA allocations (and the corresponding
nvgpu_dma_alloc_sys()) instead of custom rolled code. This migrates
away from using linux scatter gather tables directly. Instead this
is hidden in the nvgpu_mem struct. With this change the semaphore.c
code no longer has any direct Linux dependencies.

JIRA NVGPU-12
JIRA NVGPU-30

Change-Id: I92167c98aac9b413ae87496744dcee051cd60207
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1464081
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
This commit is contained in:
Alex Waterman
2017-04-12 11:27:48 -07:00
committed by mobile promotions
parent aff9d46c00
commit 84dadb1a9a
4 changed files with 133 additions and 156 deletions
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2
drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
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@@ -3833,7 +3833,7 @@ void gk20a_dump_channel_status_ramfc(struct gk20a *g,
if (hw_sema)
gk20a_debug_output(o, "SEMA STATE: value: 0x%08x "
"next_val: 0x%08x addr: 0x%010llx\n",
readl(hw_sema->value),
__nvgpu_semaphore_read(hw_sema),
atomic_read(&hw_sema->next_value),
nvgpu_hw_sema_addr(hw_sema));