| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | } |