| 1 | /*- |
| 2 | * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| 3 | * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the next |
| 14 | * paragraph) shall be included in all copies or substantial portions of the |
| 15 | * Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 21 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 22 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 23 | * OTHER DEALINGS IN THE SOFTWARE. |
| 24 | * |
| 25 | * Authors: |
| 26 | * Rickard E. (Rik) Faith <faith@valinux.com> |
| 27 | * Gareth Hughes <gareth@valinux.com> |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | /** @file drm_drawable.c |
| 32 | * This file implements ioctls to store information along with DRM drawables, |
| 33 | * such as the current set of cliprects for vblank-synced buffer swaps. |
| 34 | */ |
| 35 | |
| 36 | #include "dev/drm/drmP.h" |
| 37 | |
| 38 | struct bsd_drm_drawable_info { |
| 39 | struct drm_drawable_info info; |
| 40 | int handle; |
| 41 | RB_ENTRY(bsd_drm_drawable_info) tree; |
| 42 | }; |
| 43 | |
| 44 | static int |
| 45 | drm_drawable_compare(struct bsd_drm_drawable_info *a, |
| 46 | struct bsd_drm_drawable_info *b) |
| 47 | { |
| 48 | if (a->handle > b->handle) |
| 49 | return 1; |
| 50 | if (a->handle < b->handle) |
| 51 | return -1; |
| 52 | return 0; |
| 53 | } |
| 54 | |
| 55 | RB_PROTOTYPE_STATIC(drawable_tree, bsd_drm_drawable_info, tree, |
| 56 | drm_drawable_compare); |
| 57 | RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree, |
| 58 | drm_drawable_compare); |
| 59 | |
| 60 | struct drm_drawable_info * |
| 61 | drm_get_drawable_info(struct drm_device *dev, int handle) |
| 62 | { |
| 63 | struct bsd_drm_drawable_info find, *result; |
| 64 | |
| 65 | find.handle = handle; |
| 66 | result = RB_FIND(drawable_tree, &dev->drw_head, &find); |
| 67 | |
| 68 | return &result->info; |
| 69 | } |
| 70 | |
| 71 | int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| 72 | { |
| 73 | struct drm_draw *draw = data; |
| 74 | struct bsd_drm_drawable_info *info; |
| 75 | |
| 76 | info = malloc(sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE, |
| 77 | M_NOWAIT | M_ZERO); |
| 78 | if (info == NULL) |
| 79 | return ENOMEM; |
| 80 | |
| 81 | /* |
| 82 | * XXX Only valid for sizeof(int) == sizeof(void *) |
| 83 | */ |
| 84 | info->handle = (intptr_t)info; |
| 85 | |
| 86 | DRM_SPINLOCK(&dev->drw_lock); |
| 87 | RB_INSERT(drawable_tree, &dev->drw_head, info); |
| 88 | draw->handle = info->handle; |
| 89 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 90 | |
| 91 | DRM_DEBUG("%d\n", draw->handle); |
| 92 | |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv) |
| 97 | { |
| 98 | struct drm_draw *draw = (struct drm_draw *)data; |
| 99 | struct drm_drawable_info *info; |
| 100 | |
| 101 | DRM_SPINLOCK(&dev->drw_lock); |
| 102 | info = drm_get_drawable_info(dev, draw->handle); |
| 103 | if (info != NULL) { |
| 104 | RB_REMOVE(drawable_tree, &dev->drw_head, |
| 105 | (struct bsd_drm_drawable_info *)info); |
| 106 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 107 | free(info->rects, DRM_MEM_DRAWABLE); |
| 108 | free(info, DRM_MEM_DRAWABLE); |
| 109 | return 0; |
| 110 | } else { |
| 111 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 112 | return EINVAL; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | int drm_update_draw(struct drm_device *dev, void *data, |
| 117 | struct drm_file *file_priv) |
| 118 | { |
| 119 | struct drm_drawable_info *info; |
| 120 | struct drm_update_draw *update = (struct drm_update_draw *)data; |
| 121 | int ret; |
| 122 | |
| 123 | info = drm_get_drawable_info(dev, update->handle); |
| 124 | if (info == NULL) |
| 125 | return EINVAL; |
| 126 | |
| 127 | switch (update->type) { |
| 128 | case DRM_DRAWABLE_CLIPRECTS: |
| 129 | DRM_SPINLOCK(&dev->drw_lock); |
| 130 | if (update->num != info->num_rects) { |
| 131 | free(info->rects, DRM_MEM_DRAWABLE); |
| 132 | info->rects = NULL; |
| 133 | info->num_rects = 0; |
| 134 | } |
| 135 | if (update->num == 0) { |
| 136 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 137 | return 0; |
| 138 | } |
| 139 | if (info->rects == NULL) { |
| 140 | info->rects = malloc(sizeof(*info->rects) * |
| 141 | update->num, DRM_MEM_DRAWABLE, M_NOWAIT); |
| 142 | if (info->rects == NULL) { |
| 143 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 144 | return ENOMEM; |
| 145 | } |
| 146 | info->num_rects = update->num; |
| 147 | } |
| 148 | /* For some reason the pointer arg is unsigned long long. */ |
| 149 | ret = copyin((void *)(intptr_t)update->data, info->rects, |
| 150 | sizeof(*info->rects) * info->num_rects); |
| 151 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 152 | return ret; |
| 153 | default: |
| 154 | return EINVAL; |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | void drm_drawable_free_all(struct drm_device *dev) |
| 159 | { |
| 160 | struct bsd_drm_drawable_info *info, *next; |
| 161 | |
| 162 | DRM_SPINLOCK(&dev->drw_lock); |
| 163 | for (info = RB_MIN(drawable_tree, &dev->drw_head); |
| 164 | info != NULL ; info = next) { |
| 165 | next = RB_NEXT(drawable_tree, &dev->drw_head, info); |
| 166 | RB_REMOVE(drawable_tree, &dev->drw_head, |
| 167 | (struct bsd_drm_drawable_info *)info); |
| 168 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 169 | free(info->info.rects, DRM_MEM_DRAWABLE); |
| 170 | free(info, DRM_MEM_DRAWABLE); |
| 171 | DRM_SPINLOCK(&dev->drw_lock); |
| 172 | } |
| 173 | DRM_SPINUNLOCK(&dev->drw_lock); |
| 174 | } |