diff options
Diffstat (limited to 'drivers/accel/ivpu/ivpu_gem.c')
| -rw-r--r-- | drivers/accel/ivpu/ivpu_gem.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/accel/ivpu/ivpu_gem.c b/drivers/accel/ivpu/ivpu_gem.c index 16178054e629..8741c73b92ce 100644 --- a/drivers/accel/ivpu/ivpu_gem.c +++ b/drivers/accel/ivpu/ivpu_gem.c @@ -20,6 +20,8 @@ #include "ivpu_mmu.h" #include "ivpu_mmu_context.h" +MODULE_IMPORT_NS("DMA_BUF"); + static const struct drm_gem_object_funcs ivpu_gem_funcs; static inline void ivpu_dbg_bo(struct ivpu_device *vdev, struct ivpu_bo *bo, const char *action) @@ -172,6 +174,47 @@ struct drm_gem_object *ivpu_gem_create_object(struct drm_device *dev, size_t siz return &bo->base.base; } +struct drm_gem_object *ivpu_gem_prime_import(struct drm_device *dev, + struct dma_buf *dma_buf) +{ + struct device *attach_dev = dev->dev; + struct dma_buf_attachment *attach; + struct sg_table *sgt; + struct drm_gem_object *obj; + int ret; + + attach = dma_buf_attach(dma_buf, attach_dev); + if (IS_ERR(attach)) + return ERR_CAST(attach); + + get_dma_buf(dma_buf); + + sgt = dma_buf_map_attachment_unlocked(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) { + ret = PTR_ERR(sgt); + goto fail_detach; + } + + obj = drm_gem_shmem_prime_import_sg_table(dev, attach, sgt); + if (IS_ERR(obj)) { + ret = PTR_ERR(obj); + goto fail_unmap; + } + + obj->import_attach = attach; + obj->resv = dma_buf->resv; + + return obj; + +fail_unmap: + dma_buf_unmap_attachment_unlocked(attach, sgt, DMA_BIDIRECTIONAL); +fail_detach: + dma_buf_detach(dma_buf, attach); + dma_buf_put(dma_buf); + + return ERR_PTR(ret); +} + static struct ivpu_bo *ivpu_bo_alloc(struct ivpu_device *vdev, u64 size, u32 flags) { struct drm_gem_shmem_object *shmem; |