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 <sys/ioctl.h> 12 13 int udmabuf_fd(void) 14 { 15 static bool first = true; 16 static int udmabuf; 17 18 if (!first) { 19 return udmabuf; 20 } 21 first = false; 22 23 udmabuf = open("/dev/udmabuf", O_RDWR); 24 if (udmabuf < 0) { 25 warn_report("open /dev/udmabuf: %s", strerror(errno)); 26 } 27 return udmabuf; 28 } 29