forked from Minki/linux
465ed66060
Changelog v2: Removed redundant check for invalid sgl. Added check for valid page_offset in the beginning of exynos_drm_gem_map_buf. Changelog v1: The 'pages' structure is not required since we can use the 'sgt'. Even for CONTIG buffers, a SGT is created (which will have just one sgl). This SGT can be used during mmap instead of 'pages'. The 'page_size' element of the structure is also not used anywhere and is removed. This patch also fixes a memory leak where the 'pages' structure was being allocated during gem buffer allocation but not being freed during deallocate. Signed-off-by: Prathyush K <prathyush.k@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/* exynos_drm_buf.h
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Author: Inki Dae <inki.dae@samsung.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _EXYNOS_DRM_BUF_H_
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#define _EXYNOS_DRM_BUF_H_
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/* create and initialize buffer object. */
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struct exynos_drm_gem_buf *exynos_drm_init_buf(struct drm_device *dev,
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unsigned int size);
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/* destroy buffer object. */
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void exynos_drm_fini_buf(struct drm_device *dev,
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struct exynos_drm_gem_buf *buffer);
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/* allocate physical memory region and setup sgt. */
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int exynos_drm_alloc_buf(struct drm_device *dev,
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struct exynos_drm_gem_buf *buf,
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unsigned int flags);
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/* release physical memory region, and sgt. */
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void exynos_drm_free_buf(struct drm_device *dev,
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unsigned int flags,
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struct exynos_drm_gem_buf *buffer);
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#endif
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