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author | Jordan Crouse <jcrouse@codeaurora.org> | 2017-07-27 10:42:40 -0600 |
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committer | Rob Clark <robdclark@gmail.com> | 2017-08-22 13:19:17 -0400 |
commit | 8223286d62e296fb762e11894fbdaa84f471915d (patch) | |
tree | 2ff09fb48b0fb212ba9c2917d71ccaa20812aa40 /drivers/gpu/drm/msm/msm_gem.c | |
parent | 1267a4dfe045df42faea5fc1dfe379b480595406 (diff) | |
download | op-kernel-dev-8223286d62e296fb762e11894fbdaa84f471915d.zip op-kernel-dev-8223286d62e296fb762e11894fbdaa84f471915d.tar.gz |
drm/msm: Add a helper function for in-kernel buffer allocations
Nearly all of the buffer allocations for kernel allocate an buffer object,
virtual address and GPU iova at the same time. Make a helper function to
handle the details.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
[dropped msm_fbdev conversion to new helper, since it interferes with
display-handover work, where we want to separate allocation and mapping]
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem.c')
-rw-r--r-- | drivers/gpu/drm/msm/msm_gem.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index a0c60e7..f15821a0 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -1024,3 +1024,49 @@ fail: drm_gem_object_unreference_unlocked(obj); return ERR_PTR(ret); } + +static void *_msm_gem_kernel_new(struct drm_device *dev, uint32_t size, + uint32_t flags, struct msm_gem_address_space *aspace, + struct drm_gem_object **bo, uint64_t *iova, bool locked) +{ + void *vaddr; + struct drm_gem_object *obj = _msm_gem_new(dev, size, flags, locked); + int ret; + + if (IS_ERR(obj)) + return ERR_CAST(obj); + + if (iova) { + ret = msm_gem_get_iova(obj, aspace, iova); + if (ret) { + drm_gem_object_unreference(obj); + return ERR_PTR(ret); + } + } + + vaddr = msm_gem_get_vaddr(obj); + if (!vaddr) { + msm_gem_put_iova(obj, aspace); + drm_gem_object_unreference(obj); + return ERR_PTR(-ENOMEM); + } + + if (bo) + *bo = obj; + + return vaddr; +} + +void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size, + uint32_t flags, struct msm_gem_address_space *aspace, + struct drm_gem_object **bo, uint64_t *iova) +{ + return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, false); +} + +void *msm_gem_kernel_new_locked(struct drm_device *dev, uint32_t size, + uint32_t flags, struct msm_gem_address_space *aspace, + struct drm_gem_object **bo, uint64_t *iova) +{ + return _msm_gem_kernel_new(dev, size, flags, aspace, bo, iova, true); +} |