108 строки
2.8 KiB
C
108 строки
2.8 KiB
C
/*
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* \file drm_legacy_misc.c
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* Misc legacy support functions.
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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* \author Gareth Hughes <gareth@valinux.com>
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*/
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/*
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* Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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 NONINFRINGEMENT. IN NO EVENT SHALL
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* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <drm/drm_agpsupport.h>
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#include <drm/drm_device.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_irq.h>
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#include <drm/drm_print.h>
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#include "drm_internal.h"
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#include "drm_legacy.h"
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void drm_legacy_init_members(struct drm_device *dev)
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{
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INIT_LIST_HEAD(&dev->ctxlist);
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INIT_LIST_HEAD(&dev->vmalist);
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INIT_LIST_HEAD(&dev->maplist);
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spin_lock_init(&dev->buf_lock);
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mutex_init(&dev->ctxlist_mutex);
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}
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void drm_legacy_destroy_members(struct drm_device *dev)
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{
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mutex_destroy(&dev->ctxlist_mutex);
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}
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int drm_legacy_setup(struct drm_device * dev)
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{
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int ret;
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if (dev->driver->firstopen &&
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drm_core_check_feature(dev, DRIVER_LEGACY)) {
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ret = dev->driver->firstopen(dev);
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if (ret != 0)
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return ret;
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}
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ret = drm_legacy_dma_setup(dev);
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if (ret < 0)
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return ret;
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DRM_DEBUG("\n");
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return 0;
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}
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void drm_legacy_dev_reinit(struct drm_device *dev)
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{
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if (dev->irq_enabled)
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drm_irq_uninstall(dev);
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mutex_lock(&dev->struct_mutex);
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drm_legacy_agp_clear(dev);
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drm_legacy_sg_cleanup(dev);
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drm_legacy_vma_flush(dev);
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drm_legacy_dma_takedown(dev);
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mutex_unlock(&dev->struct_mutex);
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dev->sigdata.lock = NULL;
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dev->context_flag = 0;
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dev->last_context = 0;
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dev->if_version = 0;
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DRM_DEBUG("lastclose completed\n");
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}
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void drm_master_legacy_init(struct drm_master *master)
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{
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spin_lock_init(&master->lock.spinlock);
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init_waitqueue_head(&master->lock.lock_queue);
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}
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