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https://github.com/edk2-porting/linux-next.git
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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>
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/**************************************************************************
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*
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* Copyright © 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
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* 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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**************************************************************************/
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#include "drmP.h"
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#include "vmwgfx_drv.h"
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int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
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{
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struct drm_file *file_priv;
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struct vmw_private *dev_priv;
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if (unlikely(vma->vm_pgoff < VMWGFX_FILE_PAGE_OFFSET)) {
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if (vmw_fifo_mmap(filp, vma) == 0)
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return 0;
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return drm_mmap(filp, vma);
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}
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file_priv = (struct drm_file *)filp->private_data;
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dev_priv = vmw_priv(file_priv->minor->dev);
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return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
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}
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static int vmw_ttm_mem_global_init(struct drm_global_reference *ref)
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{
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DRM_INFO("global init.\n");
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return ttm_mem_global_init(ref->object);
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}
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static void vmw_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 vmw_ttm_global_init(struct vmw_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->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 = &vmw_ttm_mem_global_init;
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global_ref->release = &vmw_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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return ret;
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}
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dev_priv->bo_global_ref.mem_glob =
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dev_priv->mem_global_ref.object;
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global_ref = &dev_priv->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 buffer objects.\n");
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goto out_no_bo;
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}
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return 0;
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out_no_bo:
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drm_global_item_unref(&dev_priv->mem_global_ref);
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return ret;
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}
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void vmw_ttm_global_release(struct vmw_private *dev_priv)
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{
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drm_global_item_unref(&dev_priv->bo_global_ref.ref);
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drm_global_item_unref(&dev_priv->mem_global_ref);
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}
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