diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index 310c8f0c21da..21d1d508ee10 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -32,6 +32,18 @@ #define AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS 1024 #define AMDGPU_ONE_DOORBELL_SIZE 8 +signed long amdgpu_mes_fence_wait_polling(u64 *fence, + u64 wait_seq, + signed long timeout) +{ + + while ((s64)(wait_seq - *fence) > 0 && timeout > 0) { + udelay(2); + timeout -= 2; + } + return timeout > 0 ? timeout : 0; +} + int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev) { return roundup(AMDGPU_ONE_DOORBELL_SIZE * |