freebsd-dev/sys/dev/drm2/drm_drawable.c
Konstantin Belousov e27f871969 Add the code for new Intel GPU driver, which supports GEM, KMS and
works with new generations of GPUs (IronLake, SandyBridge and
supposedly IvyBridge).

The driver is not connected to the build yet.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2012-05-22 11:07:44 +00:00

174 lines
4.9 KiB
C

/*-
* 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>
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/** @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 <dev/drm2/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)
{
struct drm_draw *draw = data;
struct bsd_drm_drawable_info *info;
info = malloc(sizeof(struct bsd_drm_drawable_info), DRM_MEM_DRAWABLE,
M_NOWAIT | M_ZERO);
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)
{
struct drm_draw *draw = (struct drm_draw *)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);
free(info->rects, DRM_MEM_DRAWABLE);
free(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) {
free(info->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 = malloc(sizeof(*info->rects) *
update->num, DRM_MEM_DRAWABLE, M_NOWAIT);
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;
}
}
void drm_drawable_free_all(struct drm_device *dev)
{
struct bsd_drm_drawable_info *info, *next;
DRM_SPINLOCK(&dev->drw_lock);
for (info = RB_MIN(drawable_tree, &dev->drw_head);
info != NULL ; info = next) {
next = RB_NEXT(drawable_tree, &dev->drw_head, info);
RB_REMOVE(drawable_tree, &dev->drw_head,
(struct bsd_drm_drawable_info *)info);
DRM_SPINUNLOCK(&dev->drw_lock);
free_unr(dev->drw_unrhdr, info->handle);
free(info->info.rects, DRM_MEM_DRAWABLE);
free(info, DRM_MEM_DRAWABLE);
DRM_SPINLOCK(&dev->drw_lock);
}
DRM_SPINUNLOCK(&dev->drw_lock);
}