diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2023-09-14 16:23:01 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-04 18:36:07 -0400 |
| commit | 917f91d8d8e866965f2193d7962e064a4d139d8d (patch) | |
| tree | 3bf31a2a679afde517fdab7e624b9eecb874aab7 /drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | |
| parent | 52ed23dc29db2fe80e8332200e66a0e5a5c20683 (diff) | |
drm/amdgpu/gmc: add a way to force a particular placement for GART
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 2bfeaacd050c..60c81c3d29d5 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c @@ -269,7 +269,8 @@ void amdgpu_gmc_sysvm_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc * If GART size is bigger than space left then we ajust GART size. * Thus function will never fails. */ -void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc) +void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc, + enum amdgpu_gart_placement gart_placement) { const uint64_t four_gb = 0x100000000ULL; u64 size_af, size_bf; @@ -287,11 +288,22 @@ void amdgpu_gmc_gart_location(struct amdgpu_device *adev, struct amdgpu_gmc *mc) mc->gart_size = max(size_bf, size_af); } - if ((size_bf >= mc->gart_size && size_bf < size_af) || - (size_af < mc->gart_size)) - mc->gart_start = 0; - else + switch (gart_placement) { + case AMDGPU_GART_PLACEMENT_HIGH: mc->gart_start = max_mc_address - mc->gart_size + 1; + break; + case AMDGPU_GART_PLACEMENT_LOW: + mc->gart_start = 0; + break; + case AMDGPU_GART_PLACEMENT_BEST_FIT: + default: + if ((size_bf >= mc->gart_size && size_bf < size_af) || + (size_af < mc->gart_size)) + mc->gart_start = 0; + else + mc->gart_start = max_mc_address - mc->gart_size + 1; + break; + } mc->gart_start &= ~(four_gb - 1); mc->gart_end = mc->gart_start + mc->gart_size - 1; |