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

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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>
This commit is contained in:
Felix Kuehling
2017-08-26 02:40:45 -04:00
committed by Alex Deucher
parent d2791c4563
commit 00ecd8a27c
8 changed files with 92 additions and 0 deletions
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14
drivers/gpu/drm/amd/amdgpu/cz_ih.c
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@@ -207,6 +207,19 @@ static u32 cz_ih_get_wptr(struct amdgpu_device *adev)
return (wptr & adev->irq.ih.ptr_mask);
}
/**
* 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
*
@@ -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
};