[Piglit] [PATCH v3 3/8] egl_khr_fence_sync: Add sw_sync lib.

[Rafael Antognolli]

Add a small library that helps manipulating software fences. They are
useful for testing EGL Android fences, since the latter can be created
out of them.

Signed-off-by: Rafael Antognolli <rafael.antognolli at intel.com>
---
 .../spec/egl_khr_fence_sync/CMakeLists.gles2.txt   |   2 +-
 tests/egl/spec/egl_khr_fence_sync/sw_sync.c        | 108 +++++++++++++++++++++
 tests/egl/spec/egl_khr_fence_sync/sw_sync.h        |  47 +++++++++
 3 files changed, 156 insertions(+), 1 deletion(-)
 create mode 100644 tests/egl/spec/egl_khr_fence_sync/sw_sync.c
 create mode 100644 tests/egl/spec/egl_khr_fence_sync/sw_sync.h

diff --git a/tests/egl/spec/egl_khr_fence_sync/CMakeLists.gles2.txt b/tests/egl/spec/egl_khr_fence_sync/CMakeLists.gles2.txt
index d3f2961..c652e4c 100644
--- a/tests/egl/spec/egl_khr_fence_sync/CMakeLists.gles2.txt
+++ b/tests/egl/spec/egl_khr_fence_sync/CMakeLists.gles2.txt
@@ -4,6 +4,6 @@ if(PIGLIT_HAS_PTHREADS)
 	link_libraries(${CMAKE_THREAD_LIBS_INIT})
 endif()
 
-piglit_add_executable(egl_khr_fence_sync egl_khr_fence_sync.c)
+piglit_add_executable(egl_khr_fence_sync egl_khr_fence_sync.c sw_sync.c)
 
 # vim: ft=cmake:
diff --git a/tests/egl/spec/egl_khr_fence_sync/sw_sync.c b/tests/egl/spec/egl_khr_fence_sync/sw_sync.c
new file mode 100644
index 0000000..8c1d29d
--- /dev/null
+++ b/tests/egl/spec/egl_khr_fence_sync/sw_sync.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2012 Google, Inc
+ * Copyright © 2016 Collabora, Ltd.
+ *
+ * Based on the implementation from the Android Open Source Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Robert Foss <robert.foss at collabora.com>
+ */
+
+#include <fcntl.h>
+#include <poll.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <linux/sync_file.h>
+#include <sys/ioctl.h>
+
+#include "sw_sync.h"
+
+#ifndef SW_SYNC_IOC_INC
+struct sw_sync_create_fence_data {
+	__u32	value;
+	char	name[32];
+	__s32	fence;
+};
+
+#define SW_SYNC_IOC_MAGIC		'W'
+#define SW_SYNC_IOC_CREATE_FENCE	_IOWR(SW_SYNC_IOC_MAGIC, 0,\
+						struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_INC			_IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
+#endif
+
+#define DEVFS_SW_SYNC   "/dev/sw_sync"
+#define DEBUGFS_SW_SYNC "/sys/kernel/debug/sync/sw_sync"
+
+bool sw_sync_is_supported(void)
+{
+	if (access(DEVFS_SW_SYNC, R_OK | W_OK) != -1) {
+		return true;
+	} else if (access(DEBUGFS_SW_SYNC, R_OK | W_OK) != -1 ) {
+		return true;
+	}
+
+	return false;
+}
+
+int sw_sync_timeline_create(void)
+{
+	int fd = open(DEVFS_SW_SYNC, O_RDWR);
+
+	if (fd < 0)
+		fd = open(DEBUGFS_SW_SYNC, O_RDWR);
+
+	return fd;
+}
+
+void sw_sync_timeline_destroy(int fd)
+{
+	close(fd);
+}
+
+void sw_sync_fence_destroy(int fd)
+{
+	close(fd);
+}
+
+int sw_sync_fence_create(int fd, int32_t seqno)
+{
+	struct sw_sync_create_fence_data data = {};
+	data.value = seqno;
+
+	if (fd < 0)
+		return -1;
+
+	ioctl(fd, SW_SYNC_IOC_CREATE_FENCE, &data);
+
+	return data.fence;
+}
+
+void sw_sync_timeline_inc(int fd, uint32_t count)
+{
+	uint32_t arg = count;
+
+	if (fd == 0 || fd == -1)
+		return;
+
+	ioctl(fd, SW_SYNC_IOC_INC, &arg);
+}
diff --git a/tests/egl/spec/egl_khr_fence_sync/sw_sync.h b/tests/egl/spec/egl_khr_fence_sync/sw_sync.h
new file mode 100644
index 0000000..e3ddc4d
--- /dev/null
+++ b/tests/egl/spec/egl_khr_fence_sync/sw_sync.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2012 Google, Inc
+ * Copyright © 2016 Collabora, Ltd.
+ *
+ * Based on the implementation from the Android Open Source Project
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Robert Foss <robert.foss at collabora.com>
+ */
+
+#ifndef SW_SYNC_H
+#define SW_SYNC_H
+
+#include <stdbool.h>
+
+#define SW_SYNC_FENCE_STATUS_ERROR		(-1)
+#define SW_SYNC_FENCE_STATUS_ACTIVE		(0)
+#define SW_SYNC_FENCE_STATUS_SIGNALED	(1)
+
+bool sw_sync_is_supported(void);
+int sw_sync_timeline_create(void);
+void sw_sync_timeline_destroy(int timeline);
+void sw_sync_fence_destroy(int fence);
+int sw_sync_fence_create(int fd, int32_t seqno);
+void sw_sync_timeline_inc(int fd, uint32_t count);
+
+#endif
+
-- 
2.9.4