diff options
| author | Arunpravin <apaneers@amd.com> | 2020-08-06 14:34:33 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-08-11 11:47:35 -0400 |
| commit | 0cf0ee983b14af5e2160fa677b2eeb4c5dbb03ad (patch) | |
| tree | 73d4641e7a16e0292f7ea953e5a508f361ad1573 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | d6e6dfb287443b4197afde4632784ba640944648 (diff) | |
drm/amdgpu: Enable P2P dmabuf over XGMI
Access the exported P2P dmabuf over XGMI, if available.
Otherwise, fall back to the existing PCIe method.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arunpravin <apaneers@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 71e005cf2952..771c27478bb1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -28,6 +28,7 @@ #include <linux/dma-fence-array.h> #include <linux/interval_tree_generic.h> #include <linux/idr.h> +#include <linux/dma-buf.h> #include <drm/amdgpu_drm.h> #include "amdgpu.h" @@ -35,6 +36,7 @@ #include "amdgpu_amdkfd.h" #include "amdgpu_gmc.h" #include "amdgpu_xgmi.h" +#include "amdgpu_dma_buf.h" /** * DOC: GPUVM @@ -1778,15 +1780,24 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev, struct amdgpu_bo_va *bo_va, nodes = NULL; resv = vm->root.base.bo->tbo.base.resv; } else { + struct drm_gem_object *obj = &bo->tbo.base; struct ttm_dma_tt *ttm; + resv = bo->tbo.base.resv; + if (obj->import_attach && bo_va->is_xgmi) { + struct dma_buf *dma_buf = obj->import_attach->dmabuf; + struct drm_gem_object *gobj = dma_buf->priv; + struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj); + + if (abo->tbo.mem.mem_type == TTM_PL_VRAM) + bo = gem_to_amdgpu_bo(gobj); + } mem = &bo->tbo.mem; nodes = mem->mm_node; if (mem->mem_type == TTM_PL_TT) { ttm = container_of(bo->tbo.ttm, struct ttm_dma_tt, ttm); pages_addr = ttm->dma_address; } - resv = bo->tbo.base.resv; } if (bo) { @@ -2132,8 +2143,10 @@ struct amdgpu_bo_va *amdgpu_vm_bo_add(struct amdgpu_device *adev, INIT_LIST_HEAD(&bo_va->valids); INIT_LIST_HEAD(&bo_va->invalids); - if (bo && amdgpu_xgmi_same_hive(adev, amdgpu_ttm_adev(bo->tbo.bdev)) && - (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM)) { + if (!bo) + return bo_va; + + if (amdgpu_dmabuf_is_xgmi_accessible(adev, bo)) { bo_va->is_xgmi = true; /* Power up XGMI if it can be potentially used */ amdgpu_xgmi_set_pstate(adev, AMDGPU_XGMI_PSTATE_MAX_VEGA20); |