From ff65de96660965e661175f75427cd0020ef1104c Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Sun, 15 Jul 2012 00:22:46 +0000 Subject: [PATCH] intel: add prime interface for getting/setting a prime bo. (v4) 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 v4: fix as per Chris's suggestions, group assignments, add get tiling Reviewed-by: Chris Wilson Signed-off-by: Dave Airlie --- intel/intel_bufmgr.h | 4 +++ intel/intel_bufmgr_gem.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 67 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..eae2199 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -2413,6 +2413,69 @@ 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; + struct drm_i915_gem_get_tiling get_tiling; + + 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->bo.handle = handle; + bo_gem->bo.bufmgr = bufmgr; + + bo_gem->gem_handle = handle; + + atomic_set(&bo_gem->refcount, 1); + + bo_gem->name = "prime"; + 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; + + DRMINITLISTHEAD(&bo_gem->name_list); + DRMINITLISTHEAD(&bo_gem->vma_list); + + VG_CLEAR(get_tiling); + get_tiling.handle = bo_gem->gem_handle; + ret = drmIoctl(bufmgr_gem->fd, + DRM_IOCTL_I915_GEM_GET_TILING, + &get_tiling); + if (ret != 0) { + drm_intel_gem_bo_unreference(&bo_gem->bo); + return NULL; + } + bo_gem->tiling_mode = get_tiling.tiling_mode; + bo_gem->swizzle_mode = get_tiling.swizzle_mode; + /* XXX stride is unknown */ + drm_intel_bo_gem_set_in_aperture_size(bufmgr_gem, bo_gem); + + 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) { -- 2.7.4