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_device.h>
 37#include <drm/drm_drv.h>
 38#include <drm/drm_irq.h>
 39#include <drm/drm_print.h>
 40
 41#include "drm_internal.h"
 42#include "drm_legacy.h"
 43
 44void drm_legacy_init_members(struct drm_device *dev)
 45{
 46	INIT_LIST_HEAD(&dev->ctxlist);
 47	INIT_LIST_HEAD(&dev->vmalist);
 48	INIT_LIST_HEAD(&dev->maplist);
 49	spin_lock_init(&dev->buf_lock);
 50	mutex_init(&dev->ctxlist_mutex);
 51}
 52
 53void drm_legacy_destroy_members(struct drm_device *dev)
 54{
 55	mutex_destroy(&dev->ctxlist_mutex);
 56}
 57
 58int drm_legacy_setup(struct drm_device * dev)
 59{
 60	int ret;
 61
 62	if (dev->driver->firstopen &&
 63	    drm_core_check_feature(dev, DRIVER_LEGACY)) {
 64		ret = dev->driver->firstopen(dev);
 65		if (ret != 0)
 66			return ret;
 67	}
 68
 69	ret = drm_legacy_dma_setup(dev);
 70	if (ret < 0)
 71		return ret;
 72
 73
 74	DRM_DEBUG("\n");
 75	return 0;
 76}
 77
 78void drm_legacy_dev_reinit(struct drm_device *dev)
 79{
 80	if (dev->irq_enabled)
 81		drm_irq_uninstall(dev);
 82
 83	mutex_lock(&dev->struct_mutex);
 84
 85	drm_legacy_agp_clear(dev);
 86
 87	drm_legacy_sg_cleanup(dev);
 88	drm_legacy_vma_flush(dev);
 89	drm_legacy_dma_takedown(dev);
 90
 91	mutex_unlock(&dev->struct_mutex);
 92
 93	dev->sigdata.lock = NULL;
 94
 95	dev->context_flag = 0;
 96	dev->last_context = 0;
 97	dev->if_version = 0;
 98
 99	DRM_DEBUG("lastclose completed\n");
100}
101
102void drm_master_legacy_init(struct drm_master *master)
103{
104	spin_lock_init(&master->lock.spinlock);
105	init_waitqueue_head(&master->lock.lock_queue);
106}