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