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/* Cairo - a vector graphics library with display and print output
*
* Copyright © 2009 Chris Wilson
*
* This library is free software; you can redistribute it and/or
* modify it either under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation
* (the "LGPL") or, at your option, under the terms of the Mozilla
* Public License Version 1.1 (the "MPL"). If you do not alter this
* notice, a recipient may use your version of this file under either
* the MPL or the LGPL.
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING-LGPL-2.1; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
* You should have received a copy of the MPL along with this library
* in the file COPYING-MPL-1.1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
* OF ANY KIND, either express or implied. See the LGPL or the MPL for
* the specific language governing rights and limitations.
*
*/
#include "cairoint.h"
#include "cairo-drm-private.h"
#include "cairo-drm-ioctl-private.h"
#include "cairo-error-private.h"
#include <sys/ioctl.h>
#include <errno.h>
#define ERR_DEBUG(x) x
struct drm_gem_close {
/** Handle of the object to be closed. */
uint32_t handle;
uint32_t pad;
};
struct drm_gem_flink {
/** Handle for the object being named */
uint32_t handle;
/** Returned global name */
uint32_t name;
};
struct drm_gem_open {
/** Name of object being opened */
uint32_t name;
/** Returned handle for the object */
uint32_t handle;
/** Returned size of the object */
uint64_t size;
};
#define DRM_IOCTL_GEM_CLOSE DRM_IOW (0x09, struct drm_gem_close)
#define DRM_IOCTL_GEM_FLINK DRM_IOWR(0x0a, struct drm_gem_flink)
#define DRM_IOCTL_GEM_OPEN DRM_IOWR(0x0b, struct drm_gem_open)
cairo_status_t
_cairo_drm_bo_open_for_name (const cairo_drm_device_t *dev,
cairo_drm_bo_t *bo,
uint32_t name)
{
struct drm_gem_open open;
int ret;
open.name = name;
open.handle = 0;
open.size = 0;
do {
ret = ioctl (dev->fd, DRM_IOCTL_GEM_OPEN, &open);
} while (ret == -1 && errno == EINTR);
if (ret == -1) {
ERR_DEBUG((fprintf (stderr, "Failed to open bo for name %d: %s\n",
name, strerror (errno))));
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
bo->name = name;
bo->size = open.size;
bo->handle = open.handle;
return CAIRO_STATUS_SUCCESS;
}
cairo_status_t
_cairo_drm_bo_flink (const cairo_drm_device_t *dev,
cairo_drm_bo_t *bo)
{
struct drm_gem_flink flink;
int ret;
memset (&flink, 0, sizeof (flink));
flink.handle = bo->handle;
ret = ioctl (dev->fd, DRM_IOCTL_GEM_FLINK, &flink);
if (ret == -1) {
ERR_DEBUG((fprintf (stderr, "Failed to flink bo: %s\n",
strerror (errno))));
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
bo->name = flink.name;
return CAIRO_STATUS_SUCCESS;
}
void
_cairo_drm_bo_close (const cairo_drm_device_t *dev,
cairo_drm_bo_t *bo)
{
struct drm_gem_close close;
int ret;
close.handle = bo->handle;
do {
ret = ioctl (dev->fd, DRM_IOCTL_GEM_CLOSE, &close);
} while (ret == -1 && errno == EINTR);
}
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