This adds interfaces for the X driver to use to create a prime handle from a buffer, and create a bo from a handle.

v2: use Chris's suggested naming (well from at least for consistency) v3: git commit --amend fail

Signed-off-by: Dave Airlie airlied@redhat.com --- intel/intel_bufmgr.h | 4 ++++ intel/intel_bufmgr_gem.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 50 insertions(+)

diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h index 9b3a483..2167e43 100644 --- a/intel/intel_bufmgr.h +++ b/intel/intel_bufmgr.h @@ -192,6 +192,10 @@ void drm_intel_gem_context_destroy(drm_intel_context *ctx); int drm_intel_gem_bo_context_exec(drm_intel_bo *bo, drm_intel_context *ctx, int used, unsigned int flags);

+int drm_intel_bo_gem_export_to_prime(drm_intel_bo *bo, int *prime_fd); +drm_intel_bo *drm_intel_bo_gem_create_from_prime(drm_intel_bufmgr *bufmgr, + int prime_fd, int size); + /* drm_intel_bufmgr_fake.c */ drm_intel_bufmgr *drm_intel_bufmgr_fake_init(int fd, unsigned long low_offset, diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index 12a3197..7966924 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -2413,6 +2413,52 @@ drm_intel_gem_bo_get_tiling(drm_intel_bo *bo, uint32_t * tiling_mode, return 0; }

+drm_intel_bo * +drm_intel_bo_gem_create_from_prime(drm_intel_bufmgr *bufmgr, int prime_fd, int size) +{ + drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *) bufmgr; + int ret; + uint32_t handle; + drm_intel_bo_gem *bo_gem; + ret = drmPrimeFDToHandle(bufmgr_gem->fd, prime_fd, &handle); + if (ret) { + fprintf(stderr,"ret is %d %d\n", ret, errno); + return NULL; + } + + bo_gem = calloc(1, sizeof(*bo_gem)); + if (!bo_gem) + return NULL; + + bo_gem->bo.size = size; + bo_gem->name = "prime"; + atomic_set(&bo_gem->refcount, 1); + bo_gem->validate_index = -1; + bo_gem->reloc_tree_fences = 0; + bo_gem->used_as_reloc_target = false; + bo_gem->has_error = false; + bo_gem->reusable = false; + + bo_gem->bo.handle = handle; + bo_gem->bo.bufmgr = bufmgr; + + DRMINITLISTHEAD(&bo_gem->name_list); + DRMINITLISTHEAD(&bo_gem->vma_list); + + bo_gem->gem_handle = handle; + + return &bo_gem->bo; +} + +int +drm_intel_bo_gem_export_to_prime(drm_intel_bo *bo, int *prime_fd) +{ + drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *) bo->bufmgr; + drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *) bo; + + return drmPrimeHandleToFD(bufmgr_gem->fd, bo_gem->gem_handle, DRM_CLOEXEC, prime_fd); +} + static int drm_intel_gem_bo_flink(drm_intel_bo *bo, uint32_t * name) {