1 /*
2 * Copyright 2016 Google LLC
3 * SPDX-License-Identifier: MIT
4 */
5
6 #ifndef ANDROID_INCLUDE_HARDWARE_GOLDFISH_SYNC_H
7 #define ANDROID_INCLUDE_HARDWARE_GOLDFISH_SYNC_H
8
9 #define GOLDFISH_SYNC_VULKAN_SEMAPHORE_SYNC 0x00000001
10 #define GOLDFISH_SYNC_VULKAN_QSRI 0x00000002
11
12 #include <errno.h>
13 #include <linux/ioctl.h>
14 #include <linux/types.h>
15 #include <sys/cdefs.h>
16 #include <sys/ioctl.h>
17 #include <sys/unistd.h>
18 #include <fcntl.h>
19
20 // Make it conflict with ioctls that are not likely to be used
21 // in the emulator.
22 //
23 // '@' 00-0F linux/radeonfb.h conflict!
24 // '@' 00-0F drivers/video/aty/aty128fb.c conflict!
25 #define GOLDFISH_SYNC_IOC_MAGIC '@'
26
27 struct goldfish_sync_ioctl_info {
28 uint64_t host_glsync_handle_in;
29 uint64_t host_syncthread_handle_in;
30 int fence_fd_out;
31 };
32
33 #define GOLDFISH_SYNC_IOC_QUEUE_WORK _IOWR(GOLDFISH_SYNC_IOC_MAGIC, 0, struct goldfish_sync_ioctl_info)
34 #define GOLDFISH_SYNC_IOC_SIGNAL _IOWR(GOLDFISH_SYNC_IOC_MAGIC, 1, struct goldfish_sync_ioctl_info)
35
goldfish_sync_open()36 static __inline__ int goldfish_sync_open() {
37 return open("/dev/goldfish_sync", O_RDWR);
38 }
39
goldfish_sync_close(int sync_fd)40 static __inline__ int goldfish_sync_close(int sync_fd) {
41 return close(sync_fd);
42 }
43
44 static unsigned int sQueueWorkIoctlCmd = GOLDFISH_SYNC_IOC_QUEUE_WORK;
45
46 // If we are running on a 64-bit kernel.
47 static unsigned int sQueueWorkIoctlCmd64Kernel = 0xc0184000;
48
goldfish_sync_queue_work(int goldfish_sync_fd,uint64_t host_glsync,uint64_t host_thread,int * fd_out)49 static __inline__ int goldfish_sync_queue_work(int goldfish_sync_fd,
50 uint64_t host_glsync,
51 uint64_t host_thread,
52 int* fd_out) {
53
54 struct goldfish_sync_ioctl_info info;
55 int err;
56
57 info.host_glsync_handle_in = host_glsync;
58 info.host_syncthread_handle_in = host_thread;
59 info.fence_fd_out = -1;
60
61 err = ioctl(goldfish_sync_fd, sQueueWorkIoctlCmd, &info);
62
63 if (err < 0 && errno == ENOTTY) {
64 sQueueWorkIoctlCmd = sQueueWorkIoctlCmd64Kernel;
65 err = ioctl(goldfish_sync_fd, sQueueWorkIoctlCmd, &info);
66 if (err < 0) {
67 sQueueWorkIoctlCmd = GOLDFISH_SYNC_IOC_QUEUE_WORK;
68 }
69 }
70
71 if (fd_out) *fd_out = info.fence_fd_out;
72
73 return err;
74 }
75
goldfish_sync_signal(int goldfish_sync_fd)76 static __inline__ int goldfish_sync_signal(int goldfish_sync_fd) {
77 return ioctl(goldfish_sync_fd, GOLDFISH_SYNC_IOC_SIGNAL, 0);
78 }
79
80 #endif
81