projects / deliverable / linux.git / blame
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|---|---|---|
| 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 | * | |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
| 7 | * copy of this software and associated documentation files (the "Software"), | |
| 8 | * to deal in the Software without restriction, including without limitation | |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the | |
| 11 | * Software is furnished to do so, subject to the following conditions: | |
| 12 | * | |
| 13 | * The above copyright notice and this permission notice (including the next | |
| 14 | * paragraph) shall be included in all copies or substantial portions of the | |
| 15 | * Software. | |
| 16 | * | |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
| 23 | * OTHER DEALINGS IN THE SOFTWARE. | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef _EXYNOS_DRM_GEM_H_ | |
| 27 | #define _EXYNOS_DRM_GEM_H_ | |
| 28 | ||
| 29 | #define to_exynos_gem_obj(x) container_of(x,\ | |
| 30 | struct exynos_drm_gem_obj, base) | |
| 31 | ||
| 32 | /* | |
| 33 | * exynos drm buffer structure. | |
| 34 | * | |
| 35 | * @base: a gem object. | |
| 36 | * - a new handle to this gem object would be created | |
| 37 | * by drm_gem_handle_create(). | |
| 38 | * @entry: pointer to exynos drm buffer entry object. | |
| 39 | * - containing the information to physically | |
| 40 | * continuous memory region allocated by user request | |
| 41 | * or at framebuffer creation. | |
| 42 | * | |
| 43 | * P.S. this object would be transfered to user as kms_bo.handle so | |
| 44 | * user can access the buffer through kms_bo.handle. | |
| 45 | */ | |
| 46 | struct exynos_drm_gem_obj { | |
| 47 | struct drm_gem_object base; | |
| 48 | struct exynos_drm_buf_entry *entry; | |
| 49 | }; | |
| 50 | ||
| 51 | /* create a new buffer and get a new gem handle. */ | |
| 52 | struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_file *file_priv, | |
| 53 | struct drm_device *dev, unsigned int size, | |
| 54 | unsigned int *handle); | |
| 55 | ||
| 56 | /* | |
| 57 | * request gem object creation and buffer allocation as the size | |
| 58 | * that it is calculated with framebuffer information such as width, | |
| 59 | * height and bpp. | |
| 60 | */ | |
| 61 | int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, | |
| 62 | struct drm_file *file_priv); | |
| 63 | ||
| 64 | /* get buffer offset to map to user space. */ | |
| 65 | int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, | |
| 66 | struct drm_file *file_priv); | |
| 67 | ||
| 68 | /* unmap a buffer from user space. */ | |
| 69 | int exynos_drm_gem_munmap_ioctl(struct drm_device *dev, void *data, | |
| 70 | struct drm_file *file_priv); | |
| 71 | ||
| 72 | /* initialize gem object. */ | |
| 73 | int exynos_drm_gem_init_object(struct drm_gem_object *obj); | |
| 74 | ||
| 75 | /* free gem object. */ | |
| 76 | void exynos_drm_gem_free_object(struct drm_gem_object *gem_obj); | |
| 77 | ||
| 78 | /* create memory region for drm framebuffer. */ | |
| 79 | int exynos_drm_gem_dumb_create(struct drm_file *file_priv, | |
| 80 | struct drm_device *dev, struct drm_mode_create_dumb *args); | |
| 81 | ||
| 82 | /* map memory region for drm framebuffer to user space. */ | |
| 83 | int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, | |
| 84 | struct drm_device *dev, uint32_t handle, uint64_t *offset); | |
| 85 | ||
| 86 | /* page fault handler and mmap fault address(virtual) to physical memory. */ | |
| 87 | int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); | |
| 88 | ||
| 89 | /* | |
| 90 | * mmap the physically continuous memory that a gem object contains | |
| 91 | * to user space. | |
| 92 | */ | |
| 93 | int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
| 94 | struct drm_file *file_priv); | |
| 95 | ||
| 96 | /* set vm_flags and we can change the vm attribute to other one at here. */ | |
| 97 | int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); | |
| 98 | ||
| 99 | /* | |
| 100 | * destroy memory region allocated. | |
| 101 | * - a gem handle and physical memory region pointed by a gem object | |
| 102 | * would be released by drm_gem_handle_delete(). | |
| 103 | */ | |
| 104 | int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, | |
| 105 | struct drm_device *dev, unsigned int handle); | |
| 106 | ||
| 107 | #endif |