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| author |   Alex Deucher <alexander.deucher@amd.com> | 2019-09-17 15:17:41 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-03 09:10:59 -0500 |
| commit | 01b40c98ede4f536a8e30ba30c9510ad7a0fe7ca (patch) | |
| tree | 6a9b7c3be7a71b29edc748bcafd6f39f964c9113 | |
| parent | drm/amdgpu/psp: flush HDP write fifo after submitting cmds to the psp (diff) | |
| download | linux-dev-01b40c98ede4f536a8e30ba30c9510ad7a0fe7ca.tar.xz linux-dev-01b40c98ede4f536a8e30ba30c9510ad7a0fe7ca.zip | |
drm/amdgpu/psp: invalidate the hdp read cache before reading the psp response
Otherwise we may get stale data.
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c index 17af26ee5a7f..af726bc6980d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c @@ -151,10 +151,12 @@ psp_cmd_submit_buf(struct psp_context *psp, return ret; } + amdgpu_asic_invalidate_hdp(psp->adev, NULL); while (*((unsigned int *)psp->fence_buf) != index) { if (--timeout == 0) break; msleep(1); + amdgpu_asic_invalidate_hdp(psp->adev, NULL); } /* In some cases, psp response status is not 0 even there is no |