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drm/amdgpu/vi: add HDP asic callbacks for VI

PATCH In review Samuel Li 1 participant 1 message Sep 6, 2017

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DRM drivers Radeon and amdgpu DRM drivers
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Samuel Li

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PATCH 4/6 drm/amdgpu/vi: add HDP asic callbacks for VI

From: Alex Deucher <[email protected]>

Needed to flush and invalidate the HDP block using the CPU.

Signed-off-by Alex Deucher <[email protected]>
Signed-off-by Samuel Li <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/vi.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
drivers/gpu/drm/amd/amdgpu/vi.c +14 -0
index 18bb3cb..4ffb40b 100644
@@ -852,6 +852,18 @@ static uint32_t vi_get_rev_id(struct amdgpu_device *adev)
 			>> PCIE_EFUSE4__STRAP_BIF_ATI_REV_ID__SHIFT;
 }
 
+static void vi_flush_hdp(struct amdgpu_device *adev)
+{
+	WREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL, 1);
+	RREG32(mmHDP_MEM_COHERENCY_FLUSH_CNTL);
+}
+
+static void vi_invalidate_hdp(struct amdgpu_device *adev)
+{
+	WREG32(mmHDP_DEBUG0, 1);
+	RREG32(mmHDP_DEBUG0);
+}
+
 static const struct amdgpu_asic_funcs vi_asic_funcs =
 {
 	.read_disabled_bios = &vi_read_disabled_bios,

@@ -863,6 +875,8 @@ static const struct amdgpu_asic_funcs vi_asic_funcs =
 	.set_uvd_clocks = &vi_set_uvd_clocks,
 	.set_vce_clocks = &vi_set_vce_clocks,
 	.get_config_memsize = &vi_get_config_memsize,
+	.flush_hdp = &vi_flush_hdp,
+	.invalidate_hdp = &vi_invalidate_hdp,
 };
 
 #define CZ_REV_BRISTOL(rev)	 \
Signature · 6 lines
2.7.4

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