11c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* exynos_drm_gem.h 21c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 31c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Copyright (c) 2011 Samsung Electronics Co., Ltd. 41c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Authoer: Inki Dae <inki.dae@samsung.com> 51c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 61c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Permission is hereby granted, free of charge, to any person obtaining a 71c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * copy of this software and associated documentation files (the "Software"), 81c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * to deal in the Software without restriction, including without limitation 91c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * the rights to use, copy, modify, merge, publish, distribute, sublicense, 101c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * and/or sell copies of the Software, and to permit persons to whom the 111c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Software is furnished to do so, subject to the following conditions: 121c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 131c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * The above copyright notice and this permission notice (including the next 141c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * paragraph) shall be included in all copies or substantial portions of the 151c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Software. 161c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 171c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 181c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 191c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 201c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 211c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 221c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 231c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * OTHER DEALINGS IN THE SOFTWARE. 241c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 251c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 261c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#ifndef _EXYNOS_DRM_GEM_H_ 271c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#define _EXYNOS_DRM_GEM_H_ 281c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 291c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#define to_exynos_gem_obj(x) container_of(x,\ 301c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct exynos_drm_gem_obj, base) 311c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 32dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae#define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG) 33dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae 341c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* 352c871127e994a678b82104a4110eb7fcc87f05adInki Dae * exynos drm gem buffer structure. 362c871127e994a678b82104a4110eb7fcc87f05adInki Dae * 372c871127e994a678b82104a4110eb7fcc87f05adInki Dae * @kvaddr: kernel virtual address to allocated memory region. 382c871127e994a678b82104a4110eb7fcc87f05adInki Dae * @dma_addr: bus address(accessed by dma) to allocated memory region. 392c871127e994a678b82104a4110eb7fcc87f05adInki Dae * - this address could be physical address without IOMMU and 402c871127e994a678b82104a4110eb7fcc87f05adInki Dae * device address with IOMMU. 412b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * @sgt: sg table to transfer page data. 422b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * @pages: contain all pages to allocated memory region. 432c871127e994a678b82104a4110eb7fcc87f05adInki Dae * @size: size of allocated memory region. 442c871127e994a678b82104a4110eb7fcc87f05adInki Dae */ 452c871127e994a678b82104a4110eb7fcc87f05adInki Daestruct exynos_drm_gem_buf { 462c871127e994a678b82104a4110eb7fcc87f05adInki Dae void __iomem *kvaddr; 472c871127e994a678b82104a4110eb7fcc87f05adInki Dae dma_addr_t dma_addr; 482b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct sg_table *sgt; 492b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct page **pages; 502c871127e994a678b82104a4110eb7fcc87f05adInki Dae unsigned long size; 512c871127e994a678b82104a4110eb7fcc87f05adInki Dae}; 522c871127e994a678b82104a4110eb7fcc87f05adInki Dae 532c871127e994a678b82104a4110eb7fcc87f05adInki Dae/* 541c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * exynos drm buffer structure. 551c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 561c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * @base: a gem object. 571c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * - a new handle to this gem object would be created 581c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * by drm_gem_handle_create(). 592c871127e994a678b82104a4110eb7fcc87f05adInki Dae * @buffer: a pointer to exynos_drm_gem_buffer object. 602c871127e994a678b82104a4110eb7fcc87f05adInki Dae * - contain the information to memory region allocated 612c871127e994a678b82104a4110eb7fcc87f05adInki Dae * by user request or at framebuffer creation. 621c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * continuous memory region allocated by user request 631c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * or at framebuffer creation. 642b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * @size: total memory size to physically non-continuous memory region. 652b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * @flags: indicate memory type to allocated buffer and cache attruibute. 661c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 671c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * P.S. this object would be transfered to user as kms_bo.handle so 681c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * user can access the buffer through kms_bo.handle. 691c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 701c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daestruct exynos_drm_gem_obj { 71ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_gem_object base; 72ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct exynos_drm_gem_buf *buffer; 732b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long size; 742b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned int flags; 751c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae}; 761c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 772364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim/* destroy a buffer with gem object */ 782364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shimvoid exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj); 792364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 802364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim/* create a new buffer with gem object */ 81f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Daestruct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, 822b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned int flags, 832b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long size); 841c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 851c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* 861c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * request gem object creation and buffer allocation as the size 871c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * that it is calculated with framebuffer information such as width, 881c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * height and bpp. 891c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 901c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, 91ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv); 921c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 93f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae/* 94f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * get dma address from gem handle and this function could be used for 95f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * other drivers such as 2d/3d acceleration drivers. 96f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * with this function call, gem object reference count would be increased. 97f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae */ 98f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Daevoid *exynos_drm_gem_get_dma_addr(struct drm_device *dev, 99f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae unsigned int gem_handle, 100f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_file *file_priv); 101f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 102f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae/* 103f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * put dma address from gem handle and this function could be used for 104f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * other drivers such as 2d/3d acceleration drivers. 105f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * with this function call, gem object reference count would be decreased. 106f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae */ 107f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Daevoid exynos_drm_gem_put_dma_addr(struct drm_device *dev, 108f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae unsigned int gem_handle, 109f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_file *file_priv); 110f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 1111c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* get buffer offset to map to user space. */ 1121c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, 113ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv); 1141c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 115ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim/* 116ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim * mmap the physically continuous memory that a gem object contains 117ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim * to user space. 118ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim */ 119ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shimint exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, 120ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv); 1211c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1221c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* initialize gem object. */ 1231c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_init_object(struct drm_gem_object *obj); 1241c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1251c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* free gem object. */ 1261c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daevoid exynos_drm_gem_free_object(struct drm_gem_object *gem_obj); 1271c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1281c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* create memory region for drm framebuffer. */ 1291c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_dumb_create(struct drm_file *file_priv, 130ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, 131ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_mode_create_dumb *args); 1321c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1331c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* map memory region for drm framebuffer to user space. */ 1341c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, 135ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, uint32_t handle, 136ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim uint64_t *offset); 1371c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1381c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* 1391c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * destroy memory region allocated. 1401c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * - a gem handle and physical memory region pointed by a gem object 1411c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * would be released by drm_gem_handle_delete(). 1421c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 1431c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, 144ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, 145ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim unsigned int handle); 146ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 147ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim/* page fault handler and mmap fault address(virtual) to physical memory. */ 148ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shimint exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); 149ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 150ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim/* set vm_flags and we can change the vm attribute to other one at here. */ 151ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shimint exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma); 1521c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 1531c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#endif 154