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#include <sys/cdefs.h> 32__FBSDID("$FreeBSD$"); 33 34/** @file drm_drawable.c 35 * This file implements ioctls to store information along with DRM drawables, 36 * such as the current set of cliprects for vblank-synced buffer swaps. 37 */ 38 39#include "dev/drm/drmP.h" 40 41struct bsd_drm_drawable_info { 42 struct drm_drawable_info info; 43 int handle; 44 RB_ENTRY(bsd_drm_drawable_info) tree; 45}; 46 47static int 48drm_drawable_compare(struct bsd_drm_drawable_info *a, 49 struct bsd_drm_drawable_info *b) 50{ 51 if (a->handle > b->handle) 52 return 1; 53 if (a->handle < b->handle) 54 return -1; 55 return 0; 56} 57 58RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree, 59 drm_drawable_compare); 60 61struct drm_drawable_info * 62drm_get_drawable_info(struct drm_device *dev, int handle) 63{ 64 struct bsd_drm_drawable_info find, *result; 65 66 find.handle = handle; 67 result = RB_FIND(drawable_tree, &dev->drw_head, &find); 68 69 return &result->info; 70} 71 72int drm_adddraw(struct drm_device *dev, void *data, struct drm_file *file_priv) 73{ 74 struct drm_draw *draw = data; 75 struct bsd_drm_drawable_info *info; 76 77 info = malloc(sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE, 78 M_NOWAIT | M_ZERO); 79 if (info == NULL) 80 return ENOMEM; 81 82 info->handle = alloc_unr(dev->drw_unrhdr); 83 DRM_SPINLOCK(&dev->drw_lock); 84 RB_INSERT(drawable_tree, &dev->drw_head, info); 85 draw->handle = info->handle; 86 DRM_SPINUNLOCK(&dev->drw_lock); 87 88 DRM_DEBUG("%d\n", draw->handle); 89 90 return 0; 91} 92 93int drm_rmdraw(struct drm_device *dev, void *data, struct drm_file *file_priv) 94{ 95 struct drm_draw *draw = (struct drm_draw *)data; 96 struct drm_drawable_info *info; 97 98 DRM_SPINLOCK(&dev->drw_lock); 99 info = drm_get_drawable_info(dev, draw->handle); 100 if (info != NULL) { 101 RB_REMOVE(drawable_tree, &dev->drw_head, 102 (struct bsd_drm_drawable_info *)info); 103 DRM_SPINUNLOCK(&dev->drw_lock); 104 free_unr(dev->drw_unrhdr, draw->handle); 105 free(info->rects, DRM_MEM_DRAWABLE); 106 free(info, DRM_MEM_DRAWABLE); 107 return 0; 108 } else { 109 DRM_SPINUNLOCK(&dev->drw_lock); 110 return EINVAL; 111 } 112} 113 114int drm_update_draw(struct drm_device *dev, void *data, 115 struct drm_file *file_priv) 116{ 117 struct drm_drawable_info *info; 118 struct drm_update_draw *update = (struct drm_update_draw *)data; 119 int ret; 120 121 info = drm_get_drawable_info(dev, update->handle); 122 if (info == NULL) 123 return EINVAL; 124 125 switch (update->type) { 126 case DRM_DRAWABLE_CLIPRECTS: 127 DRM_SPINLOCK(&dev->drw_lock); 128 if (update->num != info->num_rects) { 129 free(info->rects, DRM_MEM_DRAWABLE); 130 info->rects = NULL; 131 info->num_rects = 0; 132 } 133 if (update->num == 0) { 134 DRM_SPINUNLOCK(&dev->drw_lock); 135 return 0; 136 } 137 if (info->rects == NULL) { 138 info->rects = malloc(sizeof(*info->rects) * 139 update->num, DRM_MEM_DRAWABLE, M_NOWAIT); 140 if (info->rects == NULL) { 141 DRM_SPINUNLOCK(&dev->drw_lock); 142 return ENOMEM; 143 } 144 info->num_rects = update->num; 145 } 146 /* For some reason the pointer arg is unsigned long long. */ 147 ret = copyin((void *)(intptr_t)update->data, info->rects, 148 sizeof(*info->rects) * info->num_rects); 149 DRM_SPINUNLOCK(&dev->drw_lock); 150 return ret; 151 default: 152 return EINVAL; 153 } 154} 155 156void drm_drawable_free_all(struct drm_device *dev) 157{ 158 struct bsd_drm_drawable_info *info, *next; 159 160 DRM_SPINLOCK(&dev->drw_lock); 161 for (info = RB_MIN(drawable_tree, &dev->drw_head); 162 info != NULL ; info = next) { 163 next = RB_NEXT(drawable_tree, &dev->drw_head, info); 164 RB_REMOVE(drawable_tree, &dev->drw_head, 165 (struct bsd_drm_drawable_info *)info); 166 DRM_SPINUNLOCK(&dev->drw_lock); 167 free_unr(dev->drw_unrhdr, info->handle); 168 free(info->info.rects, DRM_MEM_DRAWABLE); 169 free(info, DRM_MEM_DRAWABLE); 170 DRM_SPINLOCK(&dev->drw_lock); 171 } 172 DRM_SPINUNLOCK(&dev->drw_lock); 173} 174