drivers/gpu/drm/drm_legacy_misc.c

   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
  45 void 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
  54 void drm_legacy_destroy_members(struct drm_device *dev)
  55 {
  56         mutex_destroy(&dev->ctxlist_mutex);
  57 }
  58
  59 int 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
  79 void 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
 103 void 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 }