11c248b7dSInki Dae /* exynos_drm_gem.h 21c248b7dSInki Dae * 31c248b7dSInki Dae * Copyright (c) 2011 Samsung Electronics Co., Ltd. 41c248b7dSInki Dae * Authoer: Inki Dae <inki.dae@samsung.com> 51c248b7dSInki Dae * 61c248b7dSInki Dae * Permission is hereby granted, free of charge, to any person obtaining a 71c248b7dSInki Dae * copy of this software and associated documentation files (the "Software"), 81c248b7dSInki Dae * to deal in the Software without restriction, including without limitation 91c248b7dSInki Dae * the rights to use, copy, modify, merge, publish, distribute, sublicense, 101c248b7dSInki Dae * and/or sell copies of the Software, and to permit persons to whom the 111c248b7dSInki Dae * Software is furnished to do so, subject to the following conditions: 121c248b7dSInki Dae * 131c248b7dSInki Dae * The above copyright notice and this permission notice (including the next 141c248b7dSInki Dae * paragraph) shall be included in all copies or substantial portions of the 151c248b7dSInki Dae * Software. 161c248b7dSInki Dae * 171c248b7dSInki Dae * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 181c248b7dSInki Dae * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 191c248b7dSInki Dae * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 201c248b7dSInki Dae * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 211c248b7dSInki Dae * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 221c248b7dSInki Dae * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 231c248b7dSInki Dae * OTHER DEALINGS IN THE SOFTWARE. 241c248b7dSInki Dae */ 251c248b7dSInki Dae 261c248b7dSInki Dae #ifndef _EXYNOS_DRM_GEM_H_ 271c248b7dSInki Dae #define _EXYNOS_DRM_GEM_H_ 281c248b7dSInki Dae 291c248b7dSInki Dae #define to_exynos_gem_obj(x) container_of(x,\ 301c248b7dSInki Dae struct exynos_drm_gem_obj, base) 311c248b7dSInki Dae 321c248b7dSInki Dae /* 332c871127SInki Dae * exynos drm gem buffer structure. 342c871127SInki Dae * 352c871127SInki Dae * @kvaddr: kernel virtual address to allocated memory region. 362c871127SInki Dae * @dma_addr: bus address(accessed by dma) to allocated memory region. 372c871127SInki Dae * - this address could be physical address without IOMMU and 382c871127SInki Dae * device address with IOMMU. 392c871127SInki Dae * @size: size of allocated memory region. 402c871127SInki Dae */ 412c871127SInki Dae struct exynos_drm_gem_buf { 422c871127SInki Dae void __iomem *kvaddr; 432c871127SInki Dae dma_addr_t dma_addr; 442c871127SInki Dae unsigned long size; 452c871127SInki Dae }; 462c871127SInki Dae 472c871127SInki Dae /* 481c248b7dSInki Dae * exynos drm buffer structure. 491c248b7dSInki Dae * 501c248b7dSInki Dae * @base: a gem object. 511c248b7dSInki Dae * - a new handle to this gem object would be created 521c248b7dSInki Dae * by drm_gem_handle_create(). 532c871127SInki Dae * @buffer: a pointer to exynos_drm_gem_buffer object. 542c871127SInki Dae * - contain the information to memory region allocated 552c871127SInki Dae * by user request or at framebuffer creation. 561c248b7dSInki Dae * continuous memory region allocated by user request 571c248b7dSInki Dae * or at framebuffer creation. 581c248b7dSInki Dae * 591c248b7dSInki Dae * P.S. this object would be transfered to user as kms_bo.handle so 601c248b7dSInki Dae * user can access the buffer through kms_bo.handle. 611c248b7dSInki Dae */ 621c248b7dSInki Dae struct exynos_drm_gem_obj { 631c248b7dSInki Dae struct drm_gem_object base; 642c871127SInki Dae struct exynos_drm_gem_buf *buffer; 651c248b7dSInki Dae }; 661c248b7dSInki Dae 67*2364839aSJoonyoung Shim /* destroy a buffer with gem object */ 68*2364839aSJoonyoung Shim void exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj); 69*2364839aSJoonyoung Shim 70*2364839aSJoonyoung Shim /* create a new buffer with gem object */ 71f088d5a9SInki Dae struct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, 72ee5e770eSJoonyoung Shim unsigned long size); 731c248b7dSInki Dae 741c248b7dSInki Dae /* 751c248b7dSInki Dae * request gem object creation and buffer allocation as the size 761c248b7dSInki Dae * that it is calculated with framebuffer information such as width, 771c248b7dSInki Dae * height and bpp. 781c248b7dSInki Dae */ 791c248b7dSInki Dae int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, 801c248b7dSInki Dae struct drm_file *file_priv); 811c248b7dSInki Dae 821c248b7dSInki Dae /* get buffer offset to map to user space. */ 831c248b7dSInki Dae int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, 841c248b7dSInki Dae struct drm_file *file_priv); 851c248b7dSInki Dae 86ee5e770eSJoonyoung Shim /* 87ee5e770eSJoonyoung Shim * mmap the physically continuous memory that a gem object contains 88ee5e770eSJoonyoung Shim * to user space. 89ee5e770eSJoonyoung Shim */ 90ee5e770eSJoonyoung Shim int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, 911c248b7dSInki Dae struct drm_file *file_priv); 921c248b7dSInki Dae 931c248b7dSInki Dae /* initialize gem object. */ 941c248b7dSInki Dae int exynos_drm_gem_init_object(struct drm_gem_object *obj); 951c248b7dSInki Dae 961c248b7dSInki Dae /* free gem object. */ 971c248b7dSInki Dae void exynos_drm_gem_free_object(struct drm_gem_object *gem_obj); 981c248b7dSInki Dae 991c248b7dSInki Dae /* create memory region for drm framebuffer. */ 1001c248b7dSInki Dae int exynos_drm_gem_dumb_create(struct drm_file *file_priv, 101ee5e770eSJoonyoung Shim struct drm_device *dev, 102ee5e770eSJoonyoung Shim struct drm_mode_create_dumb *args); 1031c248b7dSInki Dae 1041c248b7dSInki Dae /* map memory region for drm framebuffer to user space. */ 1051c248b7dSInki Dae int exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, 106ee5e770eSJoonyoung Shim struct drm_device *dev, uint32_t handle, 107ee5e770eSJoonyoung Shim uint64_t *offset); 1081c248b7dSInki Dae 1091c248b7dSInki Dae /* 1101c248b7dSInki Dae * destroy memory region allocated. 1111c248b7dSInki Dae * - a gem handle and physical memory region pointed by a gem object 1121c248b7dSInki Dae * would be released by drm_gem_handle_delete(). 1131c248b7dSInki Dae */ 1141c248b7dSInki Dae int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, 115ee5e770eSJoonyoung Shim struct drm_device *dev, 116ee5e770eSJoonyoung Shim unsigned int handle); 117ee5e770eSJoonyoung Shim 118ee5e770eSJoonyoung Shim /* page fault handler and mmap fault address(virtual) to physical memory. */ 119ee5e770eSJoonyoung Shim int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); 120ee5e770eSJoonyoung Shim 121ee5e770eSJoonyoung Shim /* set vm_flags and we can change the vm attribute to other one at here. */ 122ee5e770eSJoonyoung Shim int exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); 1231c248b7dSInki Dae 1241c248b7dSInki Dae #endif 125