187f12216SVivek Kasireddy /* 287f12216SVivek Kasireddy * udmabuf helper functions. 387f12216SVivek Kasireddy * 487f12216SVivek Kasireddy * This work is licensed under the terms of the GNU GPL, version 2 or later. 587f12216SVivek Kasireddy * See the COPYING file in the top-level directory. 687f12216SVivek Kasireddy */ 787f12216SVivek Kasireddy #include "qemu/osdep.h" 887f12216SVivek Kasireddy #include "qapi/error.h" 987f12216SVivek Kasireddy #include "ui/console.h" 10*5feed38cSThomas Huth #include "qemu/error-report.h" 1187f12216SVivek Kasireddy 1287f12216SVivek Kasireddy #include <sys/ioctl.h> 1387f12216SVivek Kasireddy udmabuf_fd(void)1487f12216SVivek Kasireddyint udmabuf_fd(void) 1587f12216SVivek Kasireddy { 1687f12216SVivek Kasireddy static bool first = true; 1787f12216SVivek Kasireddy static int udmabuf; 1887f12216SVivek Kasireddy 1987f12216SVivek Kasireddy if (!first) { 2087f12216SVivek Kasireddy return udmabuf; 2187f12216SVivek Kasireddy } 2287f12216SVivek Kasireddy first = false; 2387f12216SVivek Kasireddy 2487f12216SVivek Kasireddy udmabuf = open("/dev/udmabuf", O_RDWR); 2587f12216SVivek Kasireddy if (udmabuf < 0) { 2687f12216SVivek Kasireddy warn_report("open /dev/udmabuf: %s", strerror(errno)); 2787f12216SVivek Kasireddy } 2887f12216SVivek Kasireddy return udmabuf; 2987f12216SVivek Kasireddy } 30