Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1c248b7d ID |
2 | /* exynos_drm_gem.h |
3 | * | |
4 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. | |
5 | * Authoer: Inki Dae <inki.dae@samsung.com> | |
1c248b7d ID |
6 | */ |
7 | ||
8 | #ifndef _EXYNOS_DRM_GEM_H_ | |
9 | #define _EXYNOS_DRM_GEM_H_ | |
10 | ||
d9fc9413 | 11 | #include <drm/drm_gem.h> |
8a8d9b2c | 12 | #include <linux/mm_types.h> |
d9fc9413 | 13 | |
813fd67b | 14 | #define to_exynos_gem(x) container_of(x, struct exynos_drm_gem, base) |
1c248b7d | 15 | |
dcf9af82 ID |
16 | #define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG) |
17 | ||
1c248b7d ID |
18 | /* |
19 | * exynos drm buffer structure. | |
20 | * | |
21 | * @base: a gem object. | |
22 | * - a new handle to this gem object would be created | |
23 | * by drm_gem_handle_create(). | |
2c871127 ID |
24 | * @buffer: a pointer to exynos_drm_gem_buffer object. |
25 | * - contain the information to memory region allocated | |
26 | * by user request or at framebuffer creation. | |
1c248b7d ID |
27 | * continuous memory region allocated by user request |
28 | * or at framebuffer creation. | |
2a8cb489 | 29 | * @flags: indicate memory type to allocated buffer and cache attruibute. |
3c52b880 ID |
30 | * @size: size requested from user, in bytes and this size is aligned |
31 | * in page unit. | |
2a8cb489 JS |
32 | * @cookie: cookie returned by dma_alloc_attrs |
33 | * @kvaddr: kernel virtual address to allocated memory region. | |
34 | * @dma_addr: bus address(accessed by dma) to allocated memory region. | |
35 | * - this address could be physical address without IOMMU and | |
36 | * device address with IOMMU. | |
37 | * @pages: Array of backing pages. | |
7c93537a | 38 | * @sgt: Imported sg_table. |
1c248b7d | 39 | * |
c6b78bc8 | 40 | * P.S. this object would be transferred to user as kms_bo.handle so |
1c248b7d ID |
41 | * user can access the buffer through kms_bo.handle. |
42 | */ | |
813fd67b | 43 | struct exynos_drm_gem { |
2a8cb489 JS |
44 | struct drm_gem_object base; |
45 | unsigned int flags; | |
46 | unsigned long size; | |
47 | void *cookie; | |
48 | void __iomem *kvaddr; | |
49 | dma_addr_t dma_addr; | |
00085f1e | 50 | unsigned long dma_attrs; |
2a8cb489 | 51 | struct page **pages; |
7c93537a | 52 | struct sg_table *sgt; |
1c248b7d ID |
53 | }; |
54 | ||
2364839a | 55 | /* destroy a buffer with gem object */ |
813fd67b | 56 | void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem); |
2364839a JS |
57 | |
58 | /* create a new buffer with gem object */ | |
813fd67b JS |
59 | struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev, |
60 | unsigned int flags, | |
61 | unsigned long size); | |
1c248b7d ID |
62 | |
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 exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, | |
ee5e770e | 69 | struct drm_file *file_priv); |
1c248b7d | 70 | |
6564c65f JS |
71 | /* get fake-offset of gem object that can be used with mmap. */ |
72 | int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data, | |
73 | struct drm_file *file_priv); | |
74 | ||
f0b1bda7 | 75 | /* |
3aa2a5c1 | 76 | * get exynos drm object from gem handle, this function could be used for |
f0b1bda7 ID |
77 | * other drivers such as 2d/3d acceleration drivers. |
78 | * with this function call, gem object reference count would be increased. | |
79 | */ | |
3aa2a5c1 MS |
80 | struct exynos_drm_gem *exynos_drm_gem_get(struct drm_file *filp, |
81 | unsigned int gem_handle); | |
f0b1bda7 ID |
82 | |
83 | /* | |
3aa2a5c1 MS |
84 | * put exynos drm object acquired from exynos_drm_gem_get(), |
85 | * gem object reference count would be decreased. | |
f0b1bda7 | 86 | */ |
3aa2a5c1 MS |
87 | static inline void exynos_drm_gem_put(struct exynos_drm_gem *exynos_gem) |
88 | { | |
89 | drm_gem_object_put_unlocked(&exynos_gem->base); | |
90 | } | |
f0b1bda7 | 91 | |
40cd7e0c ID |
92 | /* get buffer information to memory region allocated by gem. */ |
93 | int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, | |
94 | struct drm_file *file_priv); | |
95 | ||
1c248b7d | 96 | /* free gem object. */ |
813fd67b | 97 | void exynos_drm_gem_free_object(struct drm_gem_object *obj); |
1c248b7d ID |
98 | |
99 | /* create memory region for drm framebuffer. */ | |
100 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, | |
ee5e770e JS |
101 | struct drm_device *dev, |
102 | struct drm_mode_create_dumb *args); | |
1c248b7d | 103 | |
ee5e770e | 104 | /* page fault handler and mmap fault address(virtual) to physical memory. */ |
8a8d9b2c | 105 | vm_fault_t exynos_drm_gem_fault(struct vm_fault *vmf); |
ee5e770e JS |
106 | |
107 | /* set vm_flags and we can change the vm attribute to other one at here. */ | |
108 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); | |
1c248b7d | 109 | |
01ed50dd | 110 | /* low-level interface prime helpers */ |
89452d4a MS |
111 | struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev, |
112 | struct dma_buf *dma_buf); | |
01ed50dd JS |
113 | struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj); |
114 | struct drm_gem_object * | |
115 | exynos_drm_gem_prime_import_sg_table(struct drm_device *dev, | |
116 | struct dma_buf_attachment *attach, | |
117 | struct sg_table *sgt); | |
118 | void *exynos_drm_gem_prime_vmap(struct drm_gem_object *obj); | |
119 | void exynos_drm_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); | |
5a0202f7 JS |
120 | int exynos_drm_gem_prime_mmap(struct drm_gem_object *obj, |
121 | struct vm_area_struct *vma); | |
01ed50dd | 122 | |
1c248b7d | 123 | #endif |