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/*-
* 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(struct drm_device *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(struct drm_device *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(struct drm_device *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(struct drm_device *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) {
DRM_SPINUNLOCK(&dev->drw_lock);
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;
}
}
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