60 lines
2.0 KiB
C
60 lines
2.0 KiB
C
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/*
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* Copyright (c) 2015 MediaTek Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _MTK_DRM_GEM_H_
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#define _MTK_DRM_GEM_H_
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#include <drm/drm_gem.h>
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/*
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* mtk drm buffer structure.
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*
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* @base: a gem object.
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* - a new handle to this gem object would be created
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* by drm_gem_handle_create().
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* @cookie: the return value of dma_alloc_attrs(), keep it for dma_free_attrs()
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* @kvaddr: kernel virtual address of gem buffer.
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* @dma_addr: dma address of gem buffer.
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* @dma_attrs: dma attributes of gem buffer.
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*
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* P.S. this object would be transferred to user as kms_bo.handle so
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* user can access the buffer through kms_bo.handle.
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*/
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struct mtk_drm_gem_obj {
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struct drm_gem_object base;
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void *cookie;
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void *kvaddr;
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dma_addr_t dma_addr;
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unsigned long dma_attrs;
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struct sg_table *sg;
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};
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#define to_mtk_gem_obj(x) container_of(x, struct mtk_drm_gem_obj, base)
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void mtk_drm_gem_free_object(struct drm_gem_object *gem);
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struct mtk_drm_gem_obj *mtk_drm_gem_create(struct drm_device *dev, size_t size,
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bool alloc_kmap);
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int mtk_drm_gem_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
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struct drm_mode_create_dumb *args);
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int mtk_drm_gem_dumb_map_offset(struct drm_file *file_priv,
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struct drm_device *dev, uint32_t handle,
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uint64_t *offset);
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int mtk_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
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int mtk_drm_gem_mmap_buf(struct drm_gem_object *obj,
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struct vm_area_struct *vma);
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struct sg_table *mtk_gem_prime_get_sg_table(struct drm_gem_object *obj);
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struct drm_gem_object *mtk_gem_prime_import_sg_table(struct drm_device *dev,
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struct dma_buf_attachment *attach, struct sg_table *sg);
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#endif
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