Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
drm/amdgpu/gmc9: remove dummy read workaround for newer chips
Aldebaran has a hw fix so no longer requires the workaround.
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+4
-2
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+4
-2
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
···
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* be updated to avoid reading an incorrect value due to
575
575
* the new fast GRBM interface.
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*/
577
-
if (entry->vmid_src == AMDGPU_GFXHUB_0)
577
+
if ((entry->vmid_src == AMDGPU_GFXHUB_0) &&
578
+
(adev->asic_type < CHIP_ALDEBARAN))
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RREG32(hub->vm_l2_pro_fault_status);
579
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status = RREG32(hub->vm_l2_pro_fault_status);
···
803
802
* be cleared to avoid a false ACK due to the new fast
804
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* GRBM interface.
805
804
*/
806
-
if (vmhub == AMDGPU_GFXHUB_0)
805
+
if ((vmhub == AMDGPU_GFXHUB_0) &&
806
+
(adev->asic_type < CHIP_ALDEBARAN))
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807
RREG32_NO_KIQ(hub->vm_inv_eng0_req +
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hub->eng_distance * eng);
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809