1 87f12216SVivek Kasireddy /* 2 87f12216SVivek Kasireddy * udmabuf helper functions. 3 87f12216SVivek Kasireddy * 4 87f12216SVivek Kasireddy * This work is licensed under the terms of the GNU GPL, version 2 or later. 5 87f12216SVivek Kasireddy * See the COPYING file in the top-level directory. 6 87f12216SVivek Kasireddy */ 7 87f12216SVivek Kasireddy #include "qemu/osdep.h" 8 87f12216SVivek Kasireddy #include "qapi/error.h" 9 87f12216SVivek Kasireddy #include "ui/console.h" 10 *5feed38cSThomas Huth #include "qemu/error-report.h" 11 87f12216SVivek Kasireddy 12 87f12216SVivek Kasireddy #include <sys/ioctl.h> 13 87f12216SVivek Kasireddy udmabuf_fd(void)14 87f12216SVivek Kasireddyint udmabuf_fd(void) 15 87f12216SVivek Kasireddy { 16 87f12216SVivek Kasireddy static bool first = true; 17 87f12216SVivek Kasireddy static int udmabuf; 18 87f12216SVivek Kasireddy 19 87f12216SVivek Kasireddy if (!first) { 20 87f12216SVivek Kasireddy return udmabuf; 21 87f12216SVivek Kasireddy } 22 87f12216SVivek Kasireddy first = false; 23 87f12216SVivek Kasireddy 24 87f12216SVivek Kasireddy udmabuf = open("/dev/udmabuf", O_RDWR); 25 87f12216SVivek Kasireddy if (udmabuf < 0) { 26 87f12216SVivek Kasireddy warn_report("open /dev/udmabuf: %s", strerror(errno)); 27 87f12216SVivek Kasireddy } 28 87f12216SVivek Kasireddy return udmabuf; 29 87f12216SVivek Kasireddy } 30