Am 07.09.2017 um 00:04 schrieb Samuel Li:
From: Alex Deucher <[email protected]>
Needed to properly flush the HDP cache with the CPU from rather
than the GPU.
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Samuel Li <[email protected]>
Patches #1-#5 are unnecessary for gem_prime_mmap support() (but don't
completely drop them, we could use them for CPU based VM page table
updates).
Patch #6 looks pretty good to me, just a few notes about the HDP
flush/invalidate.
Regards,
Christian.
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index d2aaad7..6f262ce 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1279,6 +1279,10 @@ 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);
};
/*
@@ -1737,6 +1741,8 @@ 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, addr)
(adev)->gart.gart_funcs->get_vm_pde((adev), (addr))
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