projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c248b7d ID |
1 | /* exynos_drm_gem.h |
| 2 | * | |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
| 4 | * Authoer: Inki Dae <inki.dae@samsung.com> | |
| 5 | * | |
| d81aecb5 ID |
6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the | |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 9 | * option) any later version. | |
| 1c248b7d ID |
10 | */ |
| 11 | ||
| 12 | #ifndef _EXYNOS_DRM_GEM_H_ | |
| 13 | #define _EXYNOS_DRM_GEM_H_ | |
| 14 | ||
| d9fc9413 DV |
15 | #include <drm/drm_gem.h> |
| 16 | ||
| 813fd67b | 17 | #define to_exynos_gem(x) container_of(x, struct exynos_drm_gem, base) |
| 1c248b7d | 18 | |
| dcf9af82 ID |
19 | #define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG) |
| 20 | ||
| 1c248b7d ID |
21 | /* |
| 22 | * exynos drm buffer structure. | |
| 23 | * | |
| 24 | * @base: a gem object. | |
| 25 | * - a new handle to this gem object would be created | |
| 26 | * by drm_gem_handle_create(). | |
| 2c871127 ID |
27 | * @buffer: a pointer to exynos_drm_gem_buffer object. |
| 28 | * - contain the information to memory region allocated | |
| 29 | * by user request or at framebuffer creation. | |
| 1c248b7d ID |
30 | * continuous memory region allocated by user request |
| 31 | * or at framebuffer creation. | |
| 2a8cb489 | 32 | * @flags: indicate memory type to allocated buffer and cache attruibute. |
| 3c52b880 ID |
33 | * @size: size requested from user, in bytes and this size is aligned |
| 34 | * in page unit. | |
| 2a8cb489 JS |
35 | * @cookie: cookie returned by dma_alloc_attrs |
| 36 | * @kvaddr: kernel virtual address to allocated memory region. | |
| 37 | * @dma_addr: bus address(accessed by dma) to allocated memory region. | |
| 38 | * - this address could be physical address without IOMMU and | |
| 39 | * device address with IOMMU. | |
| 40 | * @pages: Array of backing pages. | |
| 7c93537a | 41 | * @sgt: Imported sg_table. |
| 1c248b7d | 42 | * |
| c6b78bc8 | 43 | * P.S. this object would be transferred to user as kms_bo.handle so |
| 1c248b7d ID |
44 | * user can access the buffer through kms_bo.handle. |
| 45 | */ | |
| 813fd67b | 46 | struct exynos_drm_gem { |
| 2a8cb489 JS |
47 | struct drm_gem_object base; |
| 48 | unsigned int flags; | |
| 49 | unsigned long size; | |
| 50 | void *cookie; | |
| 51 | void __iomem *kvaddr; | |
| 52 | dma_addr_t dma_addr; | |
| 53 | struct dma_attrs dma_attrs; | |
| 54 | struct page **pages; | |
| 7c93537a | 55 | struct sg_table *sgt; |
| 1c248b7d ID |
56 | }; |
| 57 | ||
| 2364839a | 58 | /* destroy a buffer with gem object */ |
| 813fd67b | 59 | void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem); |
| 2364839a JS |
60 | |
| 61 | /* create a new buffer with gem object */ | |
| 813fd67b JS |
62 | struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev, |
| 63 | unsigned int flags, | |
| 64 | unsigned long size); | |
| 1c248b7d ID |
65 | |
| 66 | /* | |
| 67 | * request gem object creation and buffer allocation as the size | |
| 68 | * that it is calculated with framebuffer information such as width, | |
| 69 | * height and bpp. | |
| 70 | */ | |
| 71 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, | |
| ee5e770e | 72 | struct drm_file *file_priv); |
| 1c248b7d | 73 | |
| 6564c65f JS |
74 | /* get fake-offset of gem object that can be used with mmap. */ |
| 75 | int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data, | |
| 76 | struct drm_file *file_priv); | |
| 77 | ||
| f0b1bda7 ID |
78 | /* |
| 79 | * get dma address from gem handle and this function could be used for | |
| 80 | * other drivers such as 2d/3d acceleration drivers. | |
| 81 | * with this function call, gem object reference count would be increased. | |
| 82 | */ | |
| d87342c1 | 83 | dma_addr_t *exynos_drm_gem_get_dma_addr(struct drm_device *dev, |
| f0b1bda7 | 84 | unsigned int gem_handle, |
| d87342c1 | 85 | struct drm_file *filp); |
| f0b1bda7 ID |
86 | |
| 87 | /* | |
| 88 | * put dma address from gem handle and this function could be used for | |
| 89 | * other drivers such as 2d/3d acceleration drivers. | |
| 90 | * with this function call, gem object reference count would be decreased. | |
| 91 | */ | |
| 92 | void exynos_drm_gem_put_dma_addr(struct drm_device *dev, | |
| 93 | unsigned int gem_handle, | |
| d87342c1 | 94 | struct drm_file *filp); |
| f0b1bda7 | 95 | |
| 40cd7e0c ID |
96 | /* get buffer information to memory region allocated by gem. */ |
| 97 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, | |
| 98 | struct drm_file *file_priv); | |
| 99 | ||
| a4f19aaa ID |
100 | /* get buffer size to gem handle. */ |
| 101 | unsigned long exynos_drm_gem_get_size(struct drm_device *dev, | |
| 102 | unsigned int gem_handle, | |
| 103 | struct drm_file *file_priv); | |
| 104 | ||
| 1c248b7d | 105 | /* free gem object. */ |
| 813fd67b | 106 | void exynos_drm_gem_free_object(struct drm_gem_object *obj); |
| 1c248b7d ID |
107 | |
| 108 | /* create memory region for drm framebuffer. */ | |
| 109 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, | |
| ee5e770e JS |
110 | struct drm_device *dev, |
| 111 | struct drm_mode_create_dumb *args); | |
| 1c248b7d ID |
112 | |
| 113 | /* map memory region for drm framebuffer to user space. */ | |
| 114 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, | |
| ee5e770e JS |
115 | struct drm_device *dev, uint32_t handle, |
| 116 | uint64_t *offset); | |
| 1c248b7d | 117 | |
| ee5e770e JS |
118 | /* page fault handler and mmap fault address(virtual) to physical memory. */ |
| 119 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); | |
| 120 | ||
| 121 | /* set vm_flags and we can change the vm attribute to other one at here. */ | |
| 122 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); | |
| 1c248b7d | 123 | |
| 01ed50dd JS |
124 | /* low-level interface prime helpers */ |
| 125 | struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj); | |
| 126 | struct drm_gem_object * | |
| 127 | exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, | |
| 128 | struct dma_buf_attachment *attach, | |
| 129 | struct sg_table *sgt); | |
| 130 | void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj); | |
| 131 | void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); | |
| 5a0202f7 JS |
132 | int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, |
| 133 | struct vm_area_struct *vma); | |
| 01ed50dd | 134 | |
| 1c248b7d | 135 | #endif |