1 /* Cairo - a vector graphics library with display and print output
2 *
3 * Copyright © 2009 Chris Wilson
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it either under the terms of the GNU Lesser General Public
7 * License version 2.1 as published by the Free Software Foundation
8 * (the "LGPL") or, at your option, under the terms of the Mozilla
9 * Public License Version 1.1 (the "MPL"). If you do not alter this
10 * notice, a recipient may use your version of this file under either
11 * the MPL or the LGPL.
12 *
13 * You should have received a copy of the LGPL along with this library
14 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
16 * You should have received a copy of the MPL along with this library
17 * in the file COPYING-MPL-1.1
18 *
19 * The contents of this file are subject to the Mozilla Public License
20 * Version 1.1 (the "License"); you may not use this file except in
21 * compliance with the License. You may obtain a copy of the License at
22 * http://www.mozilla.org/MPL/
23 *
24 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
25 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
26 * the specific language governing rights and limitations.
27 *
28 */
29
30 #include "cairoint.h"
31 #include "cairo-drm-private.h"
32 #include "cairo-error-private.h"
33
34 #include <sys/ioctl.h>
35 #include <errno.h>
36 #include <libdrm/drm.h>
37
38 #define ERR_DEBUG(x) x
39
40 cairo_status_t
_cairo_drm_bo_open_for_name(const cairo_drm_device_t * dev,cairo_drm_bo_t * bo,uint32_t name)41 _cairo_drm_bo_open_for_name (const cairo_drm_device_t *dev,
42 cairo_drm_bo_t *bo,
43 uint32_t name)
44 {
45 struct drm_gem_open open;
46 int ret;
47
48 open.name = name;
49 open.handle = 0;
50 open.size = 0;
51 do {
52 ret = ioctl (dev->fd, DRM_IOCTL_GEM_OPEN, &open);
53 } while (ret == -1 && errno == EINTR);
54 if (ret == -1) {
55 ERR_DEBUG((fprintf (stderr, "Failed to open bo for name %d: %s\n",
56 name, strerror (errno))));
57 return _cairo_error (CAIRO_STATUS_NO_MEMORY);
58 }
59
60 bo->name = name;
61 bo->size = open.size;
62 bo->handle = open.handle;
63
64 return CAIRO_STATUS_SUCCESS;
65 }
66
67 cairo_status_t
_cairo_drm_bo_flink(const cairo_drm_device_t * dev,cairo_drm_bo_t * bo)68 _cairo_drm_bo_flink (const cairo_drm_device_t *dev,
69 cairo_drm_bo_t *bo)
70 {
71 struct drm_gem_flink flink;
72 int ret;
73
74 memset (&flink, 0, sizeof (flink));
75 flink.handle = bo->handle;
76 ret = ioctl (dev->fd, DRM_IOCTL_GEM_FLINK, &flink);
77 if (ret == -1) {
78 ERR_DEBUG((fprintf (stderr, "Failed to flink bo: %s\n",
79 strerror (errno))));
80 return _cairo_error (CAIRO_STATUS_NO_MEMORY);
81 }
82
83 bo->name = flink.name;
84
85 return CAIRO_STATUS_SUCCESS;
86 }
87
88 void
_cairo_drm_bo_close(const cairo_drm_device_t * dev,cairo_drm_bo_t * bo)89 _cairo_drm_bo_close (const cairo_drm_device_t *dev,
90 cairo_drm_bo_t *bo)
91 {
92 struct drm_gem_close close;
93 int ret;
94
95 close.handle = bo->handle;
96 do {
97 ret = ioctl (dev->fd, DRM_IOCTL_GEM_CLOSE, &close);
98 } while (ret == -1 && errno == EINTR);
99 }
100