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| author | Deepak Nibade <dnibade@nvidia.com> | 2018-01-04 08:02:46 -0500 |
|---|---|---|
| committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2018-01-12 14:05:31 -0500 |
| commit | 5b10690479d016dd27d4592d94e7bd12a9277a34 (patch) | |
| tree | 663501e778ad0089c1930c7beff8a62dfac34ea6 /drivers/gpu/nvgpu/pmgr/pmgr.c | |
| parent | 6170f1eed53b4e6770a6948474ab8a8a5e2621bc (diff) | |
gpu: nvgpu: handle SM reported MMU_NACK exception
Upon receiving MMU_FAULT error, MMU will forward MMU_NACK to SM
If MMU_NACK is masked out, SM will simply release the semaphores
And if semaphores are released before MMU fault is handled, user space
could see that operation as successful incorrectly
Fix this by handling SM reported MMU_NACK exception
Enable MMU_NACK reporting in gv11b_gr_set_hww_esr_report_mask
In MMU_NACK handling path, we just set the error notifier and clear
the interrupt so that the User Space sees the error as soon as
semaphores are released by SM
And MMU_FAULT handling path will take care of triggering RC recovery
anyways
Also add necessary h/w accessors for mmu_nack
Bug 2040594
Jira NVGPU-473
Change-Id: Ic925c2d3f3069016c57d177713066c29ab39dc3d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1631708
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/pmgr/pmgr.c')
0 files changed, 0 insertions, 0 deletions