ba4420c224
I wrote this for the prime sharing work, but I also noticed other external non-upstream drivers from a large company carrying a similiar patch, so I may as well ship it in master. Signed-off-by: Dave Airlie <airlied@redhat.com>
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
/*
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* Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
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* All Rights Reserved.
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* Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sub license,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "drmP.h"
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#include "nouveau_drv.h"
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int
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nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
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{
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struct drm_file *file_priv = filp->private_data;
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struct drm_nouveau_private *dev_priv =
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file_priv->minor->dev->dev_private;
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if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
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return drm_mmap(filp, vma);
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return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev);
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}
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static int
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nouveau_ttm_mem_global_init(struct drm_global_reference *ref)
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{
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return ttm_mem_global_init(ref->object);
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}
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static void
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nouveau_ttm_mem_global_release(struct drm_global_reference *ref)
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{
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ttm_mem_global_release(ref->object);
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}
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int
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nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv)
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{
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struct drm_global_reference *global_ref;
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int ret;
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global_ref = &dev_priv->ttm.mem_global_ref;
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global_ref->global_type = DRM_GLOBAL_TTM_MEM;
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global_ref->size = sizeof(struct ttm_mem_global);
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global_ref->init = &nouveau_ttm_mem_global_init;
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global_ref->release = &nouveau_ttm_mem_global_release;
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ret = drm_global_item_ref(global_ref);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Failed setting up TTM memory accounting\n");
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dev_priv->ttm.mem_global_ref.release = NULL;
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return ret;
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}
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dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object;
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global_ref = &dev_priv->ttm.bo_global_ref.ref;
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global_ref->global_type = DRM_GLOBAL_TTM_BO;
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global_ref->size = sizeof(struct ttm_bo_global);
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global_ref->init = &ttm_bo_global_init;
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global_ref->release = &ttm_bo_global_release;
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ret = drm_global_item_ref(global_ref);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Failed setting up TTM BO subsystem\n");
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drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
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dev_priv->ttm.mem_global_ref.release = NULL;
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return ret;
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}
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return 0;
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}
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void
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nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv)
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{
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if (dev_priv->ttm.mem_global_ref.release == NULL)
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return;
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drm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref);
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drm_global_item_unref(&dev_priv->ttm.mem_global_ref);
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dev_priv->ttm.mem_global_ref.release = NULL;
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}
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