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Commit | Line | Data |
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1 | /* | |
2 | * udmabuf helper functions. | |
3 | * | |
4 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
5 | * See the COPYING file in the top-level directory. | |
6 | */ | |
7 | #include "qemu/osdep.h" | |
8 | #include "qapi/error.h" | |
9 | #include "ui/console.h" | |
10 | ||
11 | #include <fcntl.h> | |
12 | #include <sys/ioctl.h> | |
13 | ||
14 | int udmabuf_fd(void) | |
15 | { | |
16 | static bool first = true; | |
17 | static int udmabuf; | |
18 | ||
19 | if (!first) { | |
20 | return udmabuf; | |
21 | } | |
22 | first = false; | |
23 | ||
24 | udmabuf = open("/dev/udmabuf", O_RDWR); | |
25 | if (udmabuf < 0) { | |
26 | warn_report("open /dev/udmabuf: %s", strerror(errno)); | |
27 | } | |
28 | return udmabuf; | |
29 | } |