1/* 2 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA, 3 * All Rights Reserved. 4 * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA, 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sub license, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 */ 26 27#include "drmP.h" 28 29#include "nouveau_drv.h" 30 31int 32nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) 33{ 34 struct drm_file *file_priv = filp->private_data; 35 struct drm_nouveau_private *dev_priv = 36 file_priv->minor->dev->dev_private; 37 38 if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) 39 return drm_mmap(filp, vma); 40 41 return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev); 42} 43 44static int 45nouveau_ttm_mem_global_init(struct drm_global_reference *ref) 46{ 47 return ttm_mem_global_init(ref->object); 48} 49 50static void 51nouveau_ttm_mem_global_release(struct drm_global_reference *ref) 52{ 53 ttm_mem_global_release(ref->object); 54} 55 56int 57nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv) 58{ 59 struct drm_global_reference *global_ref; 60 int ret; 61 62 global_ref = &dev_priv->ttm.mem_global_ref; 63 global_ref->global_type = DRM_GLOBAL_TTM_MEM; 64 global_ref->size = sizeof(struct ttm_mem_global); 65 global_ref->init = &nouveau_ttm_mem_global_init; 66 global_ref->release = &nouveau_ttm_mem_global_release; 67 68 ret = drm_global_item_ref(global_ref); 69 if (unlikely(ret != 0)) { 70 DRM_ERROR("Failed setting up TTM memory accounting\n"); 71 dev_priv->ttm.mem_global_ref.release = NULL; 72 return ret; 73 } 74 75 dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object; 76 global_ref = &dev_priv->ttm.bo_global_ref.ref; 77 global_ref->global_type = DRM_GLOBAL_TTM_BO; 78 global_ref->size = sizeof(struct ttm_bo_global); 79 global_ref->init = &ttm_bo_global_init; 80 global_ref->release = &ttm_bo_global_release; 81 82 ret = drm_global_item_ref(global_ref); 83 if (unlikely(ret != 0)) { 84 DRM_ERROR("Failed setting up TTM BO subsystem\n"); 85 drm_global_item_unref(&dev_priv->ttm.mem_global_ref); 86 dev_priv->ttm.mem_global_ref.release = NULL; 87 return ret; 88 } 89 90 return 0; 91} 92 93void 94nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv) 95{ 96 if (dev_priv->ttm.mem_global_ref.release == NULL) 97 return; 98 99 drm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref); 100 drm_global_item_unref(&dev_priv->ttm.mem_global_ref); 101 dev_priv->ttm.mem_global_ref.release = NULL; 102} 103