drm/amdgpu: Add prescreening stage in IH processing (v2)

To filter out high-frequency interrupts that can be safely ignored.

v2: squash in trivial typo fix for si (Alex)

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
index 0c1209cdd1cb..b6cdf4afaf46 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
@@ -208,6 +208,19 @@ static u32 cz_ih_get_wptr(struct amdgpu_device *adev)
 }
 
 /**
+ * cz_ih_prescreen_iv - prescreen an interrupt vector
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Returns true if the interrupt vector should be further processed.
+ */
+static bool cz_ih_prescreen_iv(struct amdgpu_device *adev)
+{
+	/* Process all interrupts */
+	return true;
+}
+
+/**
  * cz_ih_decode_iv - decode an interrupt vector
  *
  * @adev: amdgpu_device pointer
@@ -414,6 +427,7 @@ static const struct amd_ip_funcs cz_ih_ip_funcs = {
 
 static const struct amdgpu_ih_funcs cz_ih_funcs = {
 	.get_wptr = cz_ih_get_wptr,
+	.prescreen_iv = cz_ih_prescreen_iv,
 	.decode_iv = cz_ih_decode_iv,
 	.set_rptr = cz_ih_set_rptr
 };