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drm/amdgpu/gmc: add a way to force a particular placement for GART

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We normally place GART based on the location of VRAM and the
available address space around that, but provide an option
to force a particular location for hardware that needs it.

v2: Switch to passing the placement via parameter

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2023-09-14 16:23:01 -04:00
parent 52ed23dc29
commit 917f91d8d8
8 changed files with 31 additions and 12 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.h
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@@ -199,6 +199,12 @@ struct amdgpu_mem_partition_info {
#define INVALID_PFN -1
enum amdgpu_gart_placement {
AMDGPU_GART_PLACEMENT_BEST_FIT = 0,
AMDGPU_GART_PLACEMENT_HIGH,
AMDGPU_GART_PLACEMENT_LOW,
};
struct amdgpu_gmc {
/* FB's physical address in MMIO space (for CPU to
* map FB). This is different compared to the agp/
@@ -391,7 +397,8 @@ void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc
void amdgpu_gmc_vram_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc,
u64 base);
void amdgpu_gmc_gart_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc);
struct amdgpu_gmc *mc,
enum amdgpu_gart_placement gart_placement);
void amdgpu_gmc_agp_location(struct amdgpu_device *adev,
struct amdgpu_gmc *mc);
void amdgpu_gmc_set_agp_default(struct amdgpu_device *adev,