11c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae/* exynos_drm_gem.c 21c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * 31c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Copyright (c) 2011 Samsung Electronics Co., Ltd. 41c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * Author: 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#include "drmP.h" 271c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#include "drm.h" 281c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 292b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae#include <linux/shmem_fs.h> 301c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#include <drm/exynos_drm.h> 311c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 321c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#include "exynos_drm_drv.h" 331c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#include "exynos_drm_gem.h" 341c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae#include "exynos_drm_buf.h" 351c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 361c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daestatic unsigned int convert_to_vm_err_msg(int msg) 371c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 381c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae unsigned int out_msg; 391c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 401c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae switch (msg) { 411c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae case 0: 421c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae case -ERESTARTSYS: 431c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae case -EINTR: 441c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae out_msg = VM_FAULT_NOPAGE; 451c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae break; 461c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 471c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae case -ENOMEM: 481c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae out_msg = VM_FAULT_OOM; 491c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae break; 501c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 511c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae default: 521c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae out_msg = VM_FAULT_SIGBUS; 531c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae break; 541c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 551c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 561c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return out_msg; 571c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 581c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 59dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Daestatic int check_gem_flags(unsigned int flags) 602b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 61dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae if (flags & ~(EXYNOS_BO_MASK)) { 62dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae DRM_ERROR("invalid flags.\n"); 63dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return -EINVAL; 64dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae } 65dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae 66dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return 0; 67dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae} 68dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae 69dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Daestatic unsigned long roundup_gem_size(unsigned long size, unsigned int flags) 70dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae{ 71dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae if (!IS_NONCONTIG_BUFFER(flags)) { 72dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae if (size >= SZ_1M) 73dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return roundup(size, SECTION_SIZE); 74dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae else if (size >= SZ_64K) 75dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return roundup(size, SZ_64K); 76dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae else 77dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae goto out; 78dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae } 79dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Daeout: 80dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return roundup(size, PAGE_SIZE); 812b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 822b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 832b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daestatic struct page **exynos_gem_get_pages(struct drm_gem_object *obj, 842b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae gfp_t gfpmask) 852b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 862b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct inode *inode; 872b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct address_space *mapping; 882b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct page *p, **pages; 892b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int i, npages; 902b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 912b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* This is the shared memory object that backs the GEM resource */ 922b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae inode = obj->filp->f_path.dentry->d_inode; 932b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae mapping = inode->i_mapping; 942b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 952b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae npages = obj->size >> PAGE_SHIFT; 962b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 972b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae pages = drm_malloc_ab(npages, sizeof(struct page *)); 982b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (pages == NULL) 992b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ERR_PTR(-ENOMEM); 1002b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1012b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae gfpmask |= mapping_gfp_mask(mapping); 1022b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1032b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae for (i = 0; i < npages; i++) { 1042b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae p = shmem_read_mapping_page_gfp(mapping, i, gfpmask); 1052b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (IS_ERR(p)) 1062b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae goto fail; 1072b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae pages[i] = p; 1082b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1092b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1102b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return pages; 1112b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1122b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daefail: 1132b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae while (i--) 1142b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae page_cache_release(pages[i]); 1152b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1162b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae drm_free_large(pages); 1172b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ERR_PTR(PTR_ERR(p)); 1182b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 1192b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1202b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daestatic void exynos_gem_put_pages(struct drm_gem_object *obj, 1212b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct page **pages, 1222b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae bool dirty, bool accessed) 1232b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 1242b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int i, npages; 1252b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1262b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae npages = obj->size >> PAGE_SHIFT; 1272b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1282b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae for (i = 0; i < npages; i++) { 1292b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (dirty) 1302b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae set_page_dirty(pages[i]); 1312b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1322b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (accessed) 1332b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae mark_page_accessed(pages[i]); 1342b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1352b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* Undo the reference we took when populating the table */ 1362b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae page_cache_release(pages[i]); 1372b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1382b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1392b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae drm_free_large(pages); 1402b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 1412b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1422b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daestatic int exynos_drm_gem_map_pages(struct drm_gem_object *obj, 1432b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct vm_area_struct *vma, 1442b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long f_vaddr, 1452b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae pgoff_t page_offset) 1462b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 1472b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); 1482b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer; 1492b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long pfn; 1502b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1512b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { 1522b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (!buf->pages) 1532b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return -EINTR; 1542b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 155f6ead8dea518d0d02c576432eba4fa145e64b02aInki Dae pfn = page_to_pfn(buf->pages[page_offset++]); 156f6ead8dea518d0d02c576432eba4fa145e64b02aInki Dae } else 157f6ead8dea518d0d02c576432eba4fa145e64b02aInki Dae pfn = (buf->dma_addr >> PAGE_SHIFT) + page_offset; 1582b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1592b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return vm_insert_mixed(vma, f_vaddr, pfn); 1602b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 1612b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1622b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daestatic int exynos_drm_gem_get_pages(struct drm_gem_object *obj) 1632b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 1642b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); 1652b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer; 1662b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct scatterlist *sgl; 1672b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct page **pages; 1682b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned int npages, i = 0; 1692b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int ret; 1702b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1712b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (buf->pages) { 1722b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_DEBUG_KMS("already allocated.\n"); 1732b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return -EINVAL; 1742b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1752b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1762b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae pages = exynos_gem_get_pages(obj, GFP_KERNEL); 1772b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (IS_ERR(pages)) { 1782b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to get pages.\n"); 1792b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return PTR_ERR(pages); 1802b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1812b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1822b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae npages = obj->size >> PAGE_SHIFT; 1832b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1842b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf->sgt = kzalloc(sizeof(struct sg_table), GFP_KERNEL); 1852b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (!buf->sgt) { 1862b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to allocate sg table.\n"); 1872b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = -ENOMEM; 1882b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae goto err; 1892b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1902b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1912b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = sg_alloc_table(buf->sgt, npages, GFP_KERNEL); 1922b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (ret < 0) { 1932b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to initialize sg table.\n"); 1942b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = -EFAULT; 1952b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae goto err1; 1962b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 1972b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 1982b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae sgl = buf->sgt->sgl; 1992b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2002b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* set all pages to sg list. */ 2012b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae while (i < npages) { 2022b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae sg_set_page(sgl, pages[i], PAGE_SIZE, 0); 2032b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae sg_dma_address(sgl) = page_to_phys(pages[i]); 2042b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae i++; 2052b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae sgl = sg_next(sgl); 2062b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 2072b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2082b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* add some codes for UNCACHED type here. TODO */ 2092b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2102b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf->pages = pages; 2112b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ret; 2122b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daeerr1: 2132b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae kfree(buf->sgt); 2142b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf->sgt = NULL; 2152b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daeerr: 2162b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_put_pages(obj, pages, true, false); 2172b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ret; 2182b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2192b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 2202b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2212b35892e9da672df40ce890bffc4f9f6119c57e0Inki Daestatic void exynos_drm_gem_put_pages(struct drm_gem_object *obj) 2222b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae{ 2232b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); 2242b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_buf *buf = exynos_gem_obj->buffer; 2252b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2262b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* 2272b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * if buffer typs is EXYNOS_BO_NONCONTIG then release all pages 2282b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * allocated at gem fault handler. 2292b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae */ 2302b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae sg_free_table(buf->sgt); 2312b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae kfree(buf->sgt); 2322b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf->sgt = NULL; 2332b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2342b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_put_pages(obj, buf->pages, true, false); 2352b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf->pages = NULL; 2362b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2372b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* add some codes for UNCACHED type here. TODO */ 2382b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae} 2392b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2402364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shimstatic int exynos_drm_gem_handle_create(struct drm_gem_object *obj, 2412364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim struct drm_file *file_priv, 2422364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim unsigned int *handle) 2431c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 2441c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae int ret; 2451c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2461c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* 2471c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * allocate a id of idr table where the obj is registered 2481c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * and handle has the id what user can see. 2491c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 2501c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae ret = drm_gem_handle_create(file_priv, obj, handle); 2511c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (ret) 2522364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return ret; 2531c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2541c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("gem handle = 0x%x\n", *handle); 2551c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2561c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* drop reference from allocate - handle holds it now. */ 2571c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae drm_gem_object_unreference_unlocked(obj); 2581c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2592364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return 0; 2602364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim} 2612364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2622364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shimvoid exynos_drm_gem_destroy(struct exynos_drm_gem_obj *exynos_gem_obj) 2632364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim{ 2642364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim struct drm_gem_object *obj; 2652364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2662364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim DRM_DEBUG_KMS("%s\n", __FILE__); 2672364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2682364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (!exynos_gem_obj) 2692364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return; 2702364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2712364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim obj = &exynos_gem_obj->base; 2722364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2732364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim DRM_DEBUG_KMS("handle count = %d\n", atomic_read(&obj->handle_count)); 2741c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2752b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if ((exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) && 2762b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->buffer->pages) 2772b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_drm_gem_put_pages(obj); 2782b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae else 2792b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_drm_free_buf(obj->dev, exynos_gem_obj->flags, 2802b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->buffer); 2812b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 2822b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_drm_fini_buf(obj->dev, exynos_gem_obj->buffer); 2832b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->buffer = NULL; 2842364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2852364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (obj->map_list.map) 2862364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim drm_gem_free_mmap_offset(obj); 2872364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2882364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim /* release file pointer to gem object. */ 2891c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae drm_gem_object_release(obj); 2901c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 2911c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae kfree(exynos_gem_obj); 2922b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj = NULL; 2932364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim} 2942364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 2952364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shimstatic struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev, 2962364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim unsigned long size) 2972364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim{ 2982364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim struct exynos_drm_gem_obj *exynos_gem_obj; 2992364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim struct drm_gem_object *obj; 3002364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim int ret; 3012364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 3022364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim exynos_gem_obj = kzalloc(sizeof(*exynos_gem_obj), GFP_KERNEL); 3032364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (!exynos_gem_obj) { 3042364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim DRM_ERROR("failed to allocate exynos gem object\n"); 3052364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return NULL; 3062364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim } 3072364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 3082b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->size = size; 3092364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim obj = &exynos_gem_obj->base; 3102364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 3112364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim ret = drm_gem_object_init(dev, obj, size); 3122364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (ret < 0) { 3132364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim DRM_ERROR("failed to initialize gem object\n"); 3142364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim kfree(exynos_gem_obj); 3152364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return NULL; 3162364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim } 3172364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 3182364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim DRM_DEBUG_KMS("created file object = 0x%x\n", (unsigned int)obj->filp); 3192364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 3202364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return exynos_gem_obj; 3211c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 3221c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 323f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Daestruct exynos_drm_gem_obj *exynos_drm_gem_create(struct drm_device *dev, 3242b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned int flags, 3252b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long size) 326f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae{ 3272364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim struct exynos_drm_gem_obj *exynos_gem_obj; 3282b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae struct exynos_drm_gem_buf *buf; 3292b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int ret; 330f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 331dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae if (!size) { 332dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae DRM_ERROR("invalid size.\n"); 333dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return ERR_PTR(-EINVAL); 334dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae } 335dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae 336dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae size = roundup_gem_size(size, flags); 337dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 338f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 339dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae ret = check_gem_flags(flags); 340dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae if (ret) 341dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae return ERR_PTR(ret); 3422b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 3432b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae buf = exynos_drm_init_buf(dev, size); 3442b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (!buf) 345ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim return ERR_PTR(-ENOMEM); 346f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 3472364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim exynos_gem_obj = exynos_drm_gem_init(dev, size); 3482364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (!exynos_gem_obj) { 3492b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = -ENOMEM; 350dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae goto err_fini_buf; 351f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae } 352f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 3532b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->buffer = buf; 3542b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 3552b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* set memory type and cache attribute from user side. */ 3562b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj->flags = flags; 3572b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 3582b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* 3592b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * allocate all pages as desired size if user wants to allocate 3602b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * physically non-continuous memory. 3612b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae */ 3622b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (flags & EXYNOS_BO_NONCONTIG) { 3632b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = exynos_drm_gem_get_pages(&exynos_gem_obj->base); 3642b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (ret < 0) { 3652b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae drm_gem_object_release(&exynos_gem_obj->base); 366dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae goto err_fini_buf; 3672b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 3682b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } else { 3692b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = exynos_drm_alloc_buf(dev, buf, flags); 3702b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (ret < 0) { 3712b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae drm_gem_object_release(&exynos_gem_obj->base); 372dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae goto err_fini_buf; 3732b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 3742b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 375f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 376f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae return exynos_gem_obj; 377dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Dae 378dcf9af822803bcc2cd9e8009648547e6060b59a0Inki Daeerr_fini_buf: 3792b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_drm_fini_buf(dev, buf); 3802b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ERR_PTR(ret); 381f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae} 382f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae 3831c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data, 384ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv) 3851c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 3861c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_exynos_gem_create *args = data; 387ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct exynos_drm_gem_obj *exynos_gem_obj; 3882364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim int ret; 3891c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 390f088d5a9c5dd22b6559fa3f3939973bc374c977bInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 3911c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 3922b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); 3931c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (IS_ERR(exynos_gem_obj)) 3941c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return PTR_ERR(exynos_gem_obj); 3951c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 3962364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, 3972364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim &args->handle); 3982364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (ret) { 3992364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim exynos_drm_gem_destroy(exynos_gem_obj); 4002364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return ret; 4012364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim } 4022364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 4031c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return 0; 4041c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 4051c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 406f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Daevoid *exynos_drm_gem_get_dma_addr(struct drm_device *dev, 407f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae unsigned int gem_handle, 408f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_file *file_priv) 409f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae{ 410f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct exynos_drm_gem_obj *exynos_gem_obj; 411f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_gem_object *obj; 412f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 413f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae obj = drm_gem_object_lookup(dev, file_priv, gem_handle); 414f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae if (!obj) { 415f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae DRM_ERROR("failed to lookup gem object.\n"); 416f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae return ERR_PTR(-EINVAL); 417f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae } 418f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 419f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae exynos_gem_obj = to_exynos_gem_obj(obj); 420f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 421f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { 422f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae DRM_DEBUG_KMS("not support NONCONTIG type.\n"); 423f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae drm_gem_object_unreference_unlocked(obj); 424f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 425f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae /* TODO */ 426f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae return ERR_PTR(-EINVAL); 427f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae } 428f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 429f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae return &exynos_gem_obj->buffer->dma_addr; 430f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae} 431f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 432f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Daevoid exynos_drm_gem_put_dma_addr(struct drm_device *dev, 433f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae unsigned int gem_handle, 434f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_file *file_priv) 435f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae{ 436f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct exynos_drm_gem_obj *exynos_gem_obj; 437f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae struct drm_gem_object *obj; 438f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 439f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae obj = drm_gem_object_lookup(dev, file_priv, gem_handle); 440f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae if (!obj) { 441f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae DRM_ERROR("failed to lookup gem object.\n"); 442f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae return; 443f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae } 444f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 445f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae exynos_gem_obj = to_exynos_gem_obj(obj); 446f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 447f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { 448f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae DRM_DEBUG_KMS("not support NONCONTIG type.\n"); 449f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae drm_gem_object_unreference_unlocked(obj); 450f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 451f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae /* TODO */ 452f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae return; 453f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae } 454f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 455f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae drm_gem_object_unreference_unlocked(obj); 456f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 457f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae /* 458f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * decrease obj->refcount one more time because we has already 459f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae * increased it at exynos_drm_gem_get_dma_addr(). 460f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae */ 461f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae drm_gem_object_unreference_unlocked(obj); 462f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae} 463f0b1bda725c1c49620d2e7ae7405a247098cdb8eInki Dae 4641c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data, 465ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv) 4661c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 4671c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_exynos_gem_map_off *args = data; 4681c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4691c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 4701c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4711c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("handle = 0x%x, offset = 0x%lx\n", 4721c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae args->handle, (unsigned long)args->offset); 4731c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4741c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (!(dev->driver->driver_features & DRIVER_GEM)) { 4751c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_ERROR("does not support GEM.\n"); 4761c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return -ENODEV; 4771c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 4781c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4791c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return exynos_drm_gem_dumb_map_offset(file_priv, dev, args->handle, 4801c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae &args->offset); 4811c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 4821c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4831c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daestatic int exynos_drm_gem_mmap_buffer(struct file *filp, 484ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct vm_area_struct *vma) 4851c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 4861c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_gem_object *obj = filp->private_data; 4871c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); 4882c871127e994a678b82104a4110eb7fcc87f05adInki Dae struct exynos_drm_gem_buf *buffer; 4892b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long pfn, vm_size, usize, uaddr = vma->vm_start; 4902b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int ret; 4911c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4921c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 4931c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4941c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae vma->vm_flags |= (VM_IO | VM_RESERVED); 4951c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4962364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim /* in case of direct mapping, always having non-cachable attribute */ 4971c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 4981c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 4992b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae vm_size = usize = vma->vm_end - vma->vm_start; 5002b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 5011c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* 5022c871127e994a678b82104a4110eb7fcc87f05adInki Dae * a buffer contains information to physically continuous memory 5031c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * allocated by user request or at framebuffer creation. 5041c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 5052c871127e994a678b82104a4110eb7fcc87f05adInki Dae buffer = exynos_gem_obj->buffer; 5061c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5071c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* check if user-requested size is valid. */ 5082c871127e994a678b82104a4110eb7fcc87f05adInki Dae if (vm_size > buffer->size) 5091c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return -EINVAL; 5101c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5112b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { 5122b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae int i = 0; 5132b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 5142b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (!buffer->pages) 5152b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return -EINVAL; 5162b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 517818c4ea7c589c521912430ea54e0c0a0671b2c6dInki Dae vma->vm_flags |= VM_MIXEDMAP; 518818c4ea7c589c521912430ea54e0c0a0671b2c6dInki Dae 5192b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae do { 5202b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = vm_insert_page(vma, uaddr, buffer->pages[i++]); 5212b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (ret) { 5222b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to remap user space.\n"); 5232b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return ret; 5242b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 5252b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 5262b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae uaddr += PAGE_SIZE; 5272b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae usize -= PAGE_SIZE; 5282b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } while (usize > 0); 5292b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } else { 5302b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae /* 5312b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * get page frame number to physical memory to be mapped 5322b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae * to user space. 5332b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae */ 5342b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae pfn = ((unsigned long)exynos_gem_obj->buffer->dma_addr) >> 5352b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae PAGE_SHIFT; 5362b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 5372b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_DEBUG_KMS("pfn = 0x%lx\n", pfn); 5382b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae 5392b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (remap_pfn_range(vma, vma->vm_start, pfn, vm_size, 5402b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae vma->vm_page_prot)) { 5412b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to remap pfn range.\n"); 5422b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae return -EAGAIN; 5432b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae } 5441c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 5451c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5461c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return 0; 5471c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 5481c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5491c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daestatic const struct file_operations exynos_drm_gem_fops = { 5501c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae .mmap = exynos_drm_gem_mmap_buffer, 5511c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae}; 5521c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5531c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, 554ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_file *file_priv) 5551c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 5561c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_exynos_gem_mmap *args = data; 5571c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_gem_object *obj; 5581c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae unsigned int addr; 5591c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5601c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 5611c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5621c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (!(dev->driver->driver_features & DRIVER_GEM)) { 5631c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_ERROR("does not support GEM.\n"); 5641c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return -ENODEV; 5651c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 5661c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5671c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae obj = drm_gem_object_lookup(dev, file_priv, args->handle); 5681c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (!obj) { 5691c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_ERROR("failed to lookup gem object.\n"); 5701c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return -EINVAL; 5711c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 5721c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5731c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae obj->filp->f_op = &exynos_drm_gem_fops; 5741c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae obj->filp->private_data = obj; 5751c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5766be5ceb02e98eaf6cfc4f8b12a896d04023f340dLinus Torvalds addr = vm_mmap(obj->filp, 0, args->size, 5771c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae PROT_READ | PROT_WRITE, MAP_SHARED, 0); 5781c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5791c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae drm_gem_object_unreference_unlocked(obj); 5801c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5811c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (IS_ERR((void *)addr)) 5821c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return PTR_ERR((void *)addr); 5831c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5841c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae args->mapped = addr; 5851c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5861c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("mapped = 0x%lx\n", (unsigned long)args->mapped); 5871c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5881c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return 0; 5891c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 5901c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5911c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_init_object(struct drm_gem_object *obj) 5921c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 5931c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 5941c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 5951c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return 0; 5961c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 5971c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 598ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shimvoid exynos_drm_gem_free_object(struct drm_gem_object *obj) 5991c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 6001c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 6011c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6022364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim exynos_drm_gem_destroy(to_exynos_gem_obj(obj)); 6031c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 6041c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6051c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_dumb_create(struct drm_file *file_priv, 606ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, 607ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_mode_create_dumb *args) 6081c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 6091c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct exynos_drm_gem_obj *exynos_gem_obj; 6102364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim int ret; 6111c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6121c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 6131c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6141c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* 6151c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * alocate memory to be used for framebuffer. 6161c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * - this callback would be called by user application 6171c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * with DRM_IOCTL_MODE_CREATE_DUMB command. 6181c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 6191c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6201c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae args->pitch = args->width * args->bpp >> 3; 6212b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae args->size = PAGE_ALIGN(args->pitch * args->height); 6221c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6232b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae exynos_gem_obj = exynos_drm_gem_create(dev, args->flags, args->size); 6241c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (IS_ERR(exynos_gem_obj)) 6251c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return PTR_ERR(exynos_gem_obj); 6261c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6272364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim ret = exynos_drm_gem_handle_create(&exynos_gem_obj->base, file_priv, 6282364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim &args->handle); 6292364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim if (ret) { 6302364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim exynos_drm_gem_destroy(exynos_gem_obj); 6312364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim return ret; 6322364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim } 6332364839a1aca677842b0dfd7ed0449acda3c3175Joonyoung Shim 6341c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return 0; 6351c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 6361c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6371c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_dumb_map_offset(struct drm_file *file_priv, 638ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, uint32_t handle, 639ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim uint64_t *offset) 6401c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 6411c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct exynos_drm_gem_obj *exynos_gem_obj; 6421c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_gem_object *obj; 6432d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim int ret = 0; 6441c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6451c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 6461c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6471c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae mutex_lock(&dev->struct_mutex); 6481c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6491c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* 6501c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * get offset of memory allocated for drm framebuffer. 6511c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * - this callback would be called by user application 6521c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae * with DRM_IOCTL_MODE_MAP_DUMB command. 6531c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae */ 6541c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6551c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae obj = drm_gem_object_lookup(dev, file_priv, handle); 6561c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (!obj) { 6571c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_ERROR("failed to lookup gem object.\n"); 6582d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim ret = -EINVAL; 6592d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim goto unlock; 6601c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 6611c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6621c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae exynos_gem_obj = to_exynos_gem_obj(obj); 6631c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6642d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim if (!exynos_gem_obj->base.map_list.map) { 6652d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim ret = drm_gem_create_mmap_offset(&exynos_gem_obj->base); 6662d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim if (ret) 6672d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim goto out; 6682d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim } 6691c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6702d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim *offset = (u64)exynos_gem_obj->base.map_list.hash.key << PAGE_SHIFT; 6711c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("offset = 0x%lx\n", (unsigned long)*offset); 6721c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 6732d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shimout: 6742d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim drm_gem_object_unreference(obj); 6752d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shimunlock: 6761c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae mutex_unlock(&dev->struct_mutex); 6772d91cf17b58b4d8228190103bef507bc73094befJoonyoung Shim return ret; 6781c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 6791c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 680ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shimint exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, 681ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim struct drm_device *dev, 682ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim unsigned int handle) 683ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim{ 684ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim int ret; 685ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 686ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim DRM_DEBUG_KMS("%s\n", __FILE__); 687ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 688ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim /* 689ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim * obj->refcount and obj->handle_count are decreased and 690ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim * if both them are 0 then exynos_drm_gem_free_object() 691ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim * would be called by callback to release resources. 692ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim */ 693ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim ret = drm_gem_handle_delete(file_priv, handle); 694ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim if (ret < 0) { 695ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim DRM_ERROR("failed to delete drm_gem_handle.\n"); 696ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim return ret; 697ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim } 698ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 699ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim return 0; 700ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim} 701ee5e770ef4eedf3abb12d05703d6a722b0e40779Joonyoung Shim 7021c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) 7031c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 7041c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_gem_object *obj = vma->vm_private_data; 7051c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae struct drm_device *dev = obj->dev; 7062b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae unsigned long f_vaddr; 7071c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae pgoff_t page_offset; 7081c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae int ret; 7091c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7101c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae page_offset = ((unsigned long)vmf->virtual_address - 7111c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae vma->vm_start) >> PAGE_SHIFT; 7122b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae f_vaddr = (unsigned long)vmf->virtual_address; 7131c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7141c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae mutex_lock(&dev->struct_mutex); 7151c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7162b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae ret = exynos_drm_gem_map_pages(obj, vma, f_vaddr, page_offset); 7172b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae if (ret < 0) 7182b35892e9da672df40ce890bffc4f9f6119c57e0Inki Dae DRM_ERROR("failed to map pages.\n"); 7191c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7201c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae mutex_unlock(&dev->struct_mutex); 7211c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7221c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return convert_to_vm_err_msg(ret); 7231c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 7241c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7251c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Daeint exynos_drm_gem_mmap(struct file *filp, struct vm_area_struct *vma) 7261c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae{ 7271c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae int ret; 7281c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7291c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_DEBUG_KMS("%s\n", __FILE__); 7301c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7311c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae /* set vm_area_struct. */ 7321c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae ret = drm_gem_mmap(filp, vma); 7331c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae if (ret < 0) { 7341c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae DRM_ERROR("failed to mmap.\n"); 7351c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return ret; 7361c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae } 7371c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7381c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae vma->vm_flags &= ~VM_PFNMAP; 7391c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae vma->vm_flags |= VM_MIXEDMAP; 7401c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae 7411c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae return ret; 7421c248b7d2960faec3e1b8f3f9c5d9d0df28e0a3cInki Dae} 743