| /*- |
| * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. |
| * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. |
| * All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Rickard E. (Rik) Faith <faith@valinux.com> |
| * Gareth Hughes <gareth@valinux.com> |
| * |
| */ |
| |
| /** @file drm_drawable.c |
| * This file implements ioctls to store information along with DRM drawables, |
| * such as the current set of cliprects for vblank-synced buffer swaps. |
| */ |
| |
| #include "drmP.h" |
| |
| struct bsd_drm_drawable_info { |
| struct drm_drawable_info info; |
| int handle; |
| RB_ENTRY(bsd_drm_drawable_info) tree; |
| }; |
| |
| static int |
| drm_drawable_compare(struct bsd_drm_drawable_info *a, |
| struct bsd_drm_drawable_info *b) |
| { |
| if (a->handle > b->handle) |
| return 1; |
| if (a->handle < b->handle) |
| return -1; |
| return 0; |
| } |
| |
| RB_GENERATE_STATIC(drawable_tree, bsd_drm_drawable_info, tree, |
| drm_drawable_compare); |
| |
| struct drm_drawable_info * |
| drm_get_drawable_info(drm_device_t *dev, int handle) |
| { |
| struct bsd_drm_drawable_info find, *result; |
| |
| find.handle = handle; |
| result = RB_FIND(drawable_tree, &dev->drw_head, &find); |
| |
| return &result->info; |
| } |
| |
| int drm_adddraw(drm_device_t *dev, void *data, struct drm_file *file_priv) |
| { |
| drm_draw_t *draw = data; |
| struct bsd_drm_drawable_info *info; |
| |
| info = drm_calloc(1, sizeof(struct bsd_drm_drawable_info), |
| DRM_MEM_DRAWABLE); |
| if (info == NULL) |
| return ENOMEM; |
| |
| info->handle = alloc_unr(dev->drw_unrhdr); |
| DRM_SPINLOCK(&dev->drw_lock); |
| RB_INSERT(drawable_tree, &dev->drw_head, info); |
| draw->handle = info->handle; |
| DRM_SPINUNLOCK(&dev->drw_lock); |
| |
| DRM_DEBUG("%d\n", draw->handle); |
| |
| return 0; |
| } |
| |
| int drm_rmdraw(drm_device_t *dev, void *data, struct drm_file *file_priv) |
| { |
| drm_draw_t *draw = (drm_draw_t *)data; |
| struct drm_drawable_info *info; |
| |
| DRM_SPINLOCK(&dev->drw_lock); |
| info = drm_get_drawable_info(dev, draw->handle); |
| if (info != NULL) { |
| RB_REMOVE(drawable_tree, &dev->drw_head, |
| (struct bsd_drm_drawable_info *)info); |
| DRM_SPINUNLOCK(&dev->drw_lock); |
| free_unr(dev->drw_unrhdr, draw->handle); |
| drm_free(info, sizeof(struct bsd_drm_drawable_info), |
| DRM_MEM_DRAWABLE); |
| return 0; |
| } else { |
| DRM_SPINUNLOCK(&dev->drw_lock); |
| return EINVAL; |
| } |
| } |
| |
| int drm_update_draw(drm_device_t *dev, void *data, struct drm_file *file_priv) |
| { |
| struct drm_drawable_info *info; |
| struct drm_update_draw *update = (struct drm_update_draw *)data; |
| int ret; |
| |
| info = drm_get_drawable_info(dev, update->handle); |
| if (info == NULL) |
| return EINVAL; |
| |
| switch (update->type) { |
| case DRM_DRAWABLE_CLIPRECTS: |
| DRM_SPINLOCK(&dev->drw_lock); |
| if (update->num != info->num_rects) { |
| drm_free(info->rects, |
| sizeof(*info->rects) * info->num_rects, |
| DRM_MEM_DRAWABLE); |
| info->rects = NULL; |
| info->num_rects = 0; |
| } |
| if (update->num == 0) { |
| DRM_SPINUNLOCK(&dev->drw_lock); |
| return 0; |
| } |
| if (info->rects == NULL) { |
| info->rects = drm_alloc(sizeof(*info->rects) * |
| update->num, DRM_MEM_DRAWABLE); |
| if (info->rects == NULL) |
| return ENOMEM; |
| info->num_rects = update->num; |
| } |
| /* For some reason the pointer arg is unsigned long long. */ |
| ret = copyin((void *)(intptr_t)update->data, info->rects, |
| sizeof(*info->rects) * info->num_rects); |
| DRM_SPINUNLOCK(&dev->drw_lock); |
| return ret; |
| default: |
| return EINVAL; |
| } |
| } |