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drm/amdgpu: Add EXT_COHERENT support for APU and NUMA systems

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On gfx943 APU, EXT_COHERENT should give MTYPE_CC for local and
MTYPE_UC for nonlocal memory.

On NUMA systems, local memory gets the local mtype, set by an
override callback. If EXT_COHERENT is set, memory will be set as
MTYPE_UC by default, with local memory MTYPE_CC.

Add an option in the override function for this case, and
add a check to ensure it is not used on UNCACHED memory.

V2: Combined APU and NUMA code into one patch
V3: Fixed a potential nullptr in amdgpu_vm_bo_update

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
David Francis
2023-10-12 10:35:20 -04:00
committed by Alex Deucher
parent a395f7ffce
commit 142262a1c0
5 changed files with 45 additions and 23 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
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@@ -843,7 +843,7 @@ static void amdgpu_vm_pte_update_flags(struct amdgpu_vm_update_params *params,
*/
if ((flags & AMDGPU_PTE_SYSTEM) && (adev->flags & AMD_IS_APU) &&
adev->gmc.gmc_funcs->override_vm_pte_flags &&
num_possible_nodes() > 1 && !params->pages_addr)
num_possible_nodes() > 1 && !params->pages_addr && params->allow_override)
amdgpu_gmc_override_vm_pte_flags(adev, params->vm, addr, &flags);
params->vm->update_funcs->update(params, pt, pe, addr, count, incr,