[PATCH 1/5] drm/amdgpu: add new asic callbacks for HDP flush/invalidation

[Zhou, David(ChunMing)]

Seems amdgpu_asic_invalidate_hdp() isn't used any more in following patch.

Regards,
David Zhou

-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces at lists.freedesktop.org] On Behalf Of Alex Deucher
Sent: Friday, January 05, 2018 12:19 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Li, Samuel <Samuel.Li at amd.com>
Subject: [PATCH 1/5] drm/amdgpu: add new asic callbacks for HDP flush/invalidation

Needed to properly flush the HDP cache with the CPU from rather than the GPU.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Samuel Li <Samuel.Li at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 ++++++
 1 file changed, 6 insertions(+)

I keep needing to resurrect these patches to test things periodically so I'd like to get them merged even if we don't have a pressing use case at the moment.

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 642bea2c9b3a..88f41c41c70a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1287,6 +1287,10 @@ struct amdgpu_asic_funcs {
 	void (*set_pcie_lanes)(struct amdgpu_device *adev, int lanes);
 	/* get config memsize register */
 	u32 (*get_config_memsize)(struct amdgpu_device *adev);
+	/* flush hdp write queue */
+	void (*flush_hdp)(struct amdgpu_device *adev);
+	/* invalidate hdp read cache */
+	void (*invalidate_hdp)(struct amdgpu_device *adev);
 };
 
 /*
@@ -1836,6 +1840,8 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)  #define amdgpu_asic_read_bios_from_rom(adev, b, l) (adev)->asic_funcs->read_bios_from_rom((adev), (b), (l))  #define amdgpu_asic_read_register(adev, se, sh, offset, v)((adev)->asic_funcs->read_register((adev), (se), (sh), (offset), (v)))  #define amdgpu_asic_get_config_memsize(adev) (adev)->asic_funcs->get_config_memsize((adev))
+#define amdgpu_asic_flush_hdp(adev) 
+(adev)->asic_funcs->flush_hdp((adev))
+#define amdgpu_asic_invalidate_hdp(adev) 
+(adev)->asic_funcs->invalidate_hdp((adev))
 #define amdgpu_gart_flush_gpu_tlb(adev, vmid) (adev)->gart.gart_funcs->flush_gpu_tlb((adev), (vmid))  #define amdgpu_gart_set_pte_pde(adev, pt, idx, addr, flags) (adev)->gart.gart_funcs->set_pte_pde((adev), (pt), (idx), (addr), (flags))  #define amdgpu_gart_get_vm_pde(adev, level, dst, flags) (adev)->gart.gart_funcs->get_vm_pde((adev), (level), (dst), (flags))
--
2.13.6

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