[AMD Official Use Only - AMD Internal Distribution Only]
Hi Alex,
These serial patches look good to me.
Reviewed-By: Frank.Min@xxxxxxx
Best Regards,
Frank
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Alex Deucher
Sent: Saturday, November 23, 2024 12:27 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Belanger, David <David.Belanger@xxxxxxx>
Subject: [PATCH 5/5] drm/amdgpu/hdp7.0: do a posting read when flushing HDP
Need to read back to make sure the write goes through.
Cc: David Belanger <david.belanger@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c b/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c
index 1c99bb09e2a1..63820329f67e 100644
--- a/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/hdp_v7_0.c
@@ -31,10 +31,12 @@
static void hdp_v7_0_flush_hdp(struct amdgpu_device *adev,
struct amdgpu_ring *ring)
{
- if (!ring || !ring->funcs->emit_wreg)
+ if (!ring || !ring->funcs->emit_wreg) {
WREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
- else
+ RREG32((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2);
+ } else {
amdgpu_ring_emit_wreg(ring, (adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2, 0);
+ }
}
static void hdp_v7_0_update_clock_gating(struct amdgpu_device *adev,
--
2.47.0
