1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd 4 * Author:Mark Yao <mark.yao@rock-chips.com> 5 */ 6 7 #ifndef _ROCKCHIP_DRM_GEM_H 8 #define _ROCKCHIP_DRM_GEM_H 9 10 #include <linux/dma-direction.h> 11 12 #define to_rockchip_obj(x) container_of(x, struct rockchip_gem_object, base) 13 14 enum rockchip_gem_buf_type { 15 ROCKCHIP_GEM_BUF_TYPE_CMA, 16 ROCKCHIP_GEM_BUF_TYPE_SHMEM, 17 ROCKCHIP_GEM_BUF_TYPE_SECURE, 18 }; 19 20 struct rockchip_gem_object { 21 struct drm_gem_object base; 22 unsigned int flags; 23 enum rockchip_gem_buf_type buf_type; 24 25 void *kvaddr; 26 dma_addr_t dma_addr; /* iova if iommu enable, otherwise physical address */ 27 dma_addr_t dma_handle; /* physical address */ 28 /* Used when IOMMU is disabled */ 29 unsigned long dma_attrs; 30 31 /* Used when IOMMU is enabled */ 32 struct drm_mm_node mm; 33 unsigned long num_pages; 34 struct page **pages; 35 struct sg_table *sgt; 36 size_t size; 37 }; 38 39 struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj); 40 struct drm_gem_object * 41 rockchip_gem_prime_import_sg_table(struct drm_device *dev, 42 struct dma_buf_attachment *attach, 43 struct sg_table *sg); 44 void *rockchip_gem_prime_vmap(struct drm_gem_object *obj); 45 void rockchip_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); 46 47 /* drm driver mmap file operations */ 48 int rockchip_gem_mmap(struct file *filp, struct vm_area_struct *vma); 49 50 /* mmap a gem object to userspace. */ 51 int rockchip_gem_mmap_buf(struct drm_gem_object *obj, 52 struct vm_area_struct *vma); 53 54 struct rockchip_gem_object * 55 rockchip_gem_create_object(struct drm_device *drm, unsigned int size, 56 bool alloc_kmap, unsigned int flags); 57 58 void rockchip_gem_free_object(struct drm_gem_object *obj); 59 60 int rockchip_gem_dumb_create(struct drm_file *file_priv, 61 struct drm_device *dev, 62 struct drm_mode_create_dumb *args); 63 /* 64 * request gem object creation and buffer allocation as the size 65 * that it is calculated with framebuffer information such as width, 66 * height and bpp. 67 */ 68 int rockchip_gem_create_ioctl(struct drm_device *dev, void *data, 69 struct drm_file *file_priv); 70 71 /* get buffer offset to map to user space. */ 72 int rockchip_gem_map_offset_ioctl(struct drm_device *dev, void *data, 73 struct drm_file *file_priv); 74 75 int rockchip_gem_get_phys_ioctl(struct drm_device *dev, void *data, 76 struct drm_file *file_priv); 77 78 int rockchip_gem_prime_begin_cpu_access(struct drm_gem_object *obj, 79 enum dma_data_direction dir); 80 81 int rockchip_gem_prime_end_cpu_access(struct drm_gem_object *obj, 82 enum dma_data_direction dir); 83 84 void rockchip_gem_get_ddr_info(void); 85 #endif /* _ROCKCHIP_DRM_GEM_H */ 86