diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index 519ce4427fce..427a7c5ba93d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -35,6 +35,7 @@ #include "amdgpu_display.h" #include "amdgpu_gem.h" #include "amdgpu_dma_buf.h" +#include "amdgpu_xgmi.h" #include <drm/amdgpu_drm.h> #include <linux/dma-buf.h> #include <linux/dma-fence-array.h> @@ -454,7 +455,7 @@ static struct drm_gem_object * amdgpu_dma_buf_create_obj(struct drm_device *dev, struct dma_buf *dma_buf) { struct dma_resv *resv = dma_buf->resv; - struct amdgpu_device *adev = dev->dev_private; + struct amdgpu_device *adev = drm_to_adev(dev); struct amdgpu_bo *bo; struct amdgpu_bo_param bp; int ret; @@ -595,3 +596,36 @@ struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, obj->import_attach = attach; return obj; } + +/** + * amdgpu_dmabuf_is_xgmi_accessible - Check if xgmi available for P2P transfer + * + * @adev: amdgpu_device pointer of the importer + * @bo: amdgpu buffer object + * + * Returns: + * True if dmabuf accessible over xgmi, false otherwise. + */ +bool amdgpu_dmabuf_is_xgmi_accessible(struct amdgpu_device *adev, + struct amdgpu_bo *bo) +{ + struct drm_gem_object *obj = &bo->tbo.base; + struct drm_gem_object *gobj; + + if (obj->import_attach) { + struct dma_buf *dma_buf = obj->import_attach->dmabuf; + + if (dma_buf->ops != &amdgpu_dmabuf_ops) + /* No XGMI with non AMD GPUs */ + return false; + + gobj = dma_buf->priv; + bo = gem_to_amdgpu_bo(gobj); + } + + if (amdgpu_xgmi_same_hive(adev, amdgpu_ttm_adev(bo->tbo.bdev)) && + (bo->preferred_domains & AMDGPU_GEM_DOMAIN_VRAM)) + return true; + + return false; +} |