350 lines
9.2 KiB
C
350 lines
9.2 KiB
C
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/**************************************************************************
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* Copyright (c) 2008, Intel Corporation.
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* All Rights Reserved.
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* Copyright (c) 2008, Tungsten Graphics Inc. Cedar Park, TX., USA.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*
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**************************************************************************/
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#include <drm/drmP.h>
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#include "psb_drv.h"
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#include "psb_ttm_userobj_api.h"
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#include <linux/io.h>
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static struct vm_operations_struct psb_ttm_vm_ops;
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/**
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* NOTE: driver_private of drm_file is now a struct psb_file_data struct
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* pPriv in struct psb_file_data contains the original psb_fpriv;
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*/
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int psb_open(struct inode *inode, struct file *filp)
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{
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struct drm_file *file_priv;
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struct drm_psb_private *dev_priv;
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struct psb_fpriv *psb_fp;
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struct psb_file_data *pvr_file_priv;
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int ret;
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DRM_DEBUG("\n");
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ret = drm_open(inode, filp);
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if (unlikely(ret))
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return ret;
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psb_fp = kzalloc(sizeof(*psb_fp), GFP_KERNEL);
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if (unlikely(psb_fp == NULL))
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goto out_err0;
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file_priv = (struct drm_file *) filp->private_data;
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dev_priv = psb_priv(file_priv->minor->dev);
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DRM_DEBUG("is_master %d\n", file_priv->is_master ? 1 : 0);
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psb_fp->tfile = ttm_object_file_init(dev_priv->tdev,
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PSB_FILE_OBJECT_HASH_ORDER);
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if (unlikely(psb_fp->tfile == NULL))
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goto out_err1;
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pvr_file_priv = (struct psb_file_data *)file_priv->driver_priv;
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if (!pvr_file_priv) {
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DRM_ERROR("drm file private is NULL\n");
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goto out_err1;
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}
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pvr_file_priv->priv = psb_fp;
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if (unlikely(dev_priv->bdev.dev_mapping == NULL))
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dev_priv->bdev.dev_mapping = dev_priv->dev->dev_mapping;
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return 0;
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out_err1:
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kfree(psb_fp);
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out_err0:
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(void) drm_release(inode, filp);
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return ret;
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}
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int psb_release(struct inode *inode, struct file *filp)
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{
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struct drm_file *file_priv;
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struct psb_fpriv *psb_fp;
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struct drm_psb_private *dev_priv;
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int ret;
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file_priv = (struct drm_file *) filp->private_data;
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psb_fp = psb_fpriv(file_priv);
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dev_priv = psb_priv(file_priv->minor->dev);
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ttm_object_file_release(&psb_fp->tfile);
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kfree(psb_fp);
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ret = drm_release(inode, filp);
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return ret;
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}
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int psb_fence_signaled_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_fence_signaled_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_fence_finish_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_fence_finish_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_fence_unref_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_fence_unref_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_pl_waitidle_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_pl_waitidle_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_pl_setstatus_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_pl_setstatus_ioctl(psb_fpriv(file_priv)->tfile,
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&psb_priv(dev)->ttm_lock, data);
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}
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int psb_pl_synccpu_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_pl_synccpu_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_pl_unref_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_pl_unref_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_pl_reference_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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return ttm_pl_reference_ioctl(psb_fpriv(file_priv)->tfile, data);
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}
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int psb_pl_create_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_psb_private *dev_priv = psb_priv(dev);
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return ttm_pl_create_ioctl(psb_fpriv(file_priv)->tfile,
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&dev_priv->bdev, &dev_priv->ttm_lock, data);
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}
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int psb_pl_ub_create_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_psb_private *dev_priv = psb_priv(dev);
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return ttm_pl_ub_create_ioctl(psb_fpriv(file_priv)->tfile,
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&dev_priv->bdev, &dev_priv->ttm_lock, data);
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}
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/**
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* psb_ttm_fault - Wrapper around the ttm fault method.
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*
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* @vma: The struct vm_area_struct as in the vm fault() method.
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* @vmf: The struct vm_fault as in the vm fault() method.
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*
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* Since ttm_fault() will reserve buffers while faulting,
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* we need to take the ttm read lock around it, as this driver
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* relies on the ttm_lock in write mode to exclude all threads from
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* reserving and thus validating buffers in aperture- and memory shortage
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* situations.
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*/
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static int psb_ttm_fault(struct vm_area_struct *vma,
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struct vm_fault *vmf)
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{
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struct ttm_buffer_object *bo = (struct ttm_buffer_object *)
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vma->vm_private_data;
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struct drm_psb_private *dev_priv =
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container_of(bo->bdev, struct drm_psb_private, bdev);
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int ret;
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ret = ttm_read_lock(&dev_priv->ttm_lock, true);
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if (unlikely(ret != 0))
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return VM_FAULT_NOPAGE;
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ret = dev_priv->ttm_vm_ops->fault(vma, vmf);
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ttm_read_unlock(&dev_priv->ttm_lock);
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return ret;
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}
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/**
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* if vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET call directly to
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* PVRMMap
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*/
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int psb_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 drm_psb_private *dev_priv;
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int ret;
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if (vma->vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET ||
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vma->vm_pgoff > 2 * DRM_PSB_FILE_PAGE_OFFSET)
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#if 0 /* FIXMEAC */
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return PVRMMap(filp, vma);
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#else
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return -EINVAL;
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#endif
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file_priv = (struct drm_file *) filp->private_data;
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dev_priv = psb_priv(file_priv->minor->dev);
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ret = ttm_bo_mmap(filp, vma, &dev_priv->bdev);
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if (unlikely(ret != 0))
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return ret;
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if (unlikely(dev_priv->ttm_vm_ops == NULL)) {
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dev_priv->ttm_vm_ops = (struct vm_operations_struct *)
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vma->vm_ops;
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psb_ttm_vm_ops = *vma->vm_ops;
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psb_ttm_vm_ops.fault = &psb_ttm_fault;
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}
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vma->vm_ops = &psb_ttm_vm_ops;
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return 0;
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}
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/*
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ssize_t psb_ttm_write(struct file *filp, const char __user *buf,
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size_t count, loff_t *f_pos)
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{
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struct drm_file *file_priv = (struct drm_file *)filp->private_data;
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struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev);
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return ttm_bo_io(&dev_priv->bdev, filp, buf, NULL, count, f_pos, 1);
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}
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ssize_t psb_ttm_read(struct file *filp, char __user *buf,
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size_t count, loff_t *f_pos)
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{
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struct drm_file *file_priv = (struct drm_file *)filp->private_data;
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struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev);
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return ttm_bo_io(&dev_priv->bdev, filp, NULL, buf, count, f_pos, 1);
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}
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*/
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int psb_verify_access(struct ttm_buffer_object *bo,
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struct file *filp)
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{
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struct drm_file *file_priv = (struct drm_file *)filp->private_data;
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if (capable(CAP_SYS_ADMIN))
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return 0;
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if (unlikely(!file_priv->authenticated))
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return -EPERM;
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return ttm_pl_verify_access(bo, psb_fpriv(file_priv)->tfile);
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}
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static int psb_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 psb_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 psb_ttm_global_init(struct drm_psb_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 = &psb_ttm_mem_global_init;
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global_ref->release = &psb_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 referencing a global TTM memory object.\n");
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return ret;
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}
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dev_priv->bo_global_ref.mem_glob = 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 (ret != 0) {
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DRM_ERROR("Failed setting up TTM BO subsystem.\n");
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drm_global_item_unref(global_ref);
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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 psb_ttm_global_release(struct drm_psb_private *dev_priv)
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{
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drm_global_item_unref(&dev_priv->mem_global_ref);
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}
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int psb_getpageaddrs_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_psb_getpageaddrs_arg *arg = data;
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struct ttm_buffer_object *bo;
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struct ttm_tt *ttm;
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struct page **tt_pages;
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unsigned long i, num_pages;
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unsigned long *p = arg->page_addrs;
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int ret = 0;
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bo = ttm_buffer_object_lookup(psb_fpriv(file_priv)->tfile,
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arg->handle);
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if (unlikely(bo == NULL)) {
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printk(KERN_ERR
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"Could not find buffer object for getpageaddrs.\n");
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return -EINVAL;
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}
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arg->gtt_offset = bo->offset;
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ttm = bo->ttm;
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num_pages = ttm->num_pages;
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tt_pages = ttm->pages;
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for (i = 0; i < num_pages; i++)
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p[i] = (unsigned long)page_to_phys(tt_pages[i]);
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return ret;
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}
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