LXR linux/drivers/gpu/drm/drm_legacy

   1/*
   2 * \file drm_legacy_misc.c
   3 * Misc legacy support functions.
   4 *
   5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
   6 * \author Gareth Hughes <gareth@valinux.com>
   7 */
   8
   9/*
  10 * Created: Tue Feb  2 08:37:54 1999 by faith@valinux.com
  11 *
  12 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
  13 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  14 * All Rights Reserved.
  15 *
  16 * Permission is hereby granted, free of charge, to any person obtaining a
  17 * copy of this software and associated documentation files (the "Software"),
  18 * to deal in the Software without restriction, including without limitation
  19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  20 * and/or sell copies of the Software, and to permit persons to whom the
  21 * Software is furnished to do so, subject to the following conditions:
  22 *
  23 * The above copyright notice and this permission notice (including the next
  24 * paragraph) shall be included in all copies or substantial portions of the
  25 * Software.
  26 *
  27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  33 * OTHER DEALINGS IN THE SOFTWARE.
  34 */
  35
  36#include <drm/drm_agpsupport.h>
  37#include <drm/drm_device.h>
  38#include <drm/drm_drv.h>
  39#include <drm/drm_irq.h>
  40#include <drm/drm_print.h>
  41
  42#include "drm_internal.h"
  43#include "drm_legacy.h"
  44
  45void drm_legacy_init_members(struct drm_device *dev)
  46{
  47        INIT_LIST_HEAD(&dev->ctxlist);
  48        INIT_LIST_HEAD(&dev->vmalist);
  49        INIT_LIST_HEAD(&dev->maplist);
  50        spin_lock_init(&dev->buf_lock);
  51        mutex_init(&dev->ctxlist_mutex);
  52}
  53
  54void drm_legacy_destroy_members(struct drm_device *dev)
  55{
  56        mutex_destroy(&dev->ctxlist_mutex);
  57}
  58
  59int drm_legacy_setup(struct drm_device * dev)
  60{
  61        int ret;
  62
  63        if (dev->driver->firstopen &&
  64            drm_core_check_feature(dev, DRIVER_LEGACY)) {
  65                ret = dev->driver->firstopen(dev);
  66                if (ret != 0)
  67                        return ret;
  68        }
  69
  70        ret = drm_legacy_dma_setup(dev);
  71        if (ret < 0)
  72                return ret;
  73
  74
  75        DRM_DEBUG("\n");
  76        return 0;
  77}
  78
  79void drm_legacy_dev_reinit(struct drm_device *dev)
  80{
  81        if (dev->irq_enabled)
  82                drm_irq_uninstall(dev);
  83
  84        mutex_lock(&dev->struct_mutex);
  85
  86        drm_legacy_agp_clear(dev);
  87
  88        drm_legacy_sg_cleanup(dev);
  89        drm_legacy_vma_flush(dev);
  90        drm_legacy_dma_takedown(dev);
  91
  92        mutex_unlock(&dev->struct_mutex);
  93
  94        dev->sigdata.lock = NULL;
  95
  96        dev->context_flag = 0;
  97        dev->last_context = 0;
  98        dev->if_version = 0;
  99
 100        DRM_DEBUG("lastclose completed\n");
 101}
 102
 103void drm_master_legacy_init(struct drm_master *master)
 104{
 105        spin_lock_init(&master->lock.spinlock);
 106        init_waitqueue_head(&master->lock.lock_queue);
 107}
 108