1 files changed, 78 insertions, 0 deletions
diff --git a/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_wait_queue.c b/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_wait_queue.c
new file mode 100644
index 00000000000..f44dadbd5b0
--- /dev/null
+++ b/drivers/gpu/arm/mali400/r4p0_rel0/linux/mali_osk_wait_queue.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2012 ARM Limited. All rights reserved.
+ * 
+ * This program is free software and is provided to you under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
+ * 
+ * A copy of the licence is included with the program, and can also be obtained from Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+/**
+ * @file mali_osk_wait_queue.c
+ * Implemenation of the OS abstraction layer for the kernel device driver
+ */
+
+#include <linux/wait.h>
+#include <linux/slab.h>
+#include <linux/sched.h>
+
+#include "mali_osk.h"
+#include "mali_kernel_common.h"
+
+struct _mali_osk_wait_queue_t_struct {
+	wait_queue_head_t wait_queue;
+};
+
+_mali_osk_wait_queue_t* _mali_osk_wait_queue_init( void )
+{
+	_mali_osk_wait_queue_t* ret = NULL;
+
+	ret = kmalloc(sizeof(_mali_osk_wait_queue_t), GFP_KERNEL);
+
+	if (NULL == ret) {
+		return ret;
+	}
+
+	init_waitqueue_head(&ret->wait_queue);
+	MALI_DEBUG_ASSERT(!waitqueue_active(&ret->wait_queue));
+
+	return ret;
+}
+
+void _mali_osk_wait_queue_wait_event( _mali_osk_wait_queue_t *queue, mali_bool (*condition)(void *), void *data )
+{
+	MALI_DEBUG_ASSERT_POINTER( queue );
+	MALI_DEBUG_PRINT(6, ("Adding to wait queue %p\n", queue));
+	wait_event(queue->wait_queue, condition(data));
+}
+
+void _mali_osk_wait_queue_wait_event_timeout( _mali_osk_wait_queue_t *queue, mali_bool (*condition)(void *), void *data, u32 timeout )
+{
+	MALI_DEBUG_ASSERT_POINTER( queue );
+	MALI_DEBUG_PRINT(6, ("Adding to wait queue %p\n", queue));
+	wait_event_timeout(queue->wait_queue, condition(data), _mali_osk_time_mstoticks(timeout));
+}
+
+void _mali_osk_wait_queue_wake_up( _mali_osk_wait_queue_t *queue )
+{
+	MALI_DEBUG_ASSERT_POINTER( queue );
+
+	/* if queue is empty, don't attempt to wake up its elements */
+	if (!waitqueue_active(&queue->wait_queue)) return;
+
+	MALI_DEBUG_PRINT(6, ("Waking up elements in wait queue %p ....\n", queue));
+
+	wake_up_all(&queue->wait_queue);
+
+	MALI_DEBUG_PRINT(6, ("... elements in wait queue %p woken up\n", queue));
+}
+
+void _mali_osk_wait_queue_term( _mali_osk_wait_queue_t *queue )
+{
+	/* Parameter validation  */
+	MALI_DEBUG_ASSERT_POINTER( queue );
+
+	/* Linux requires no explicit termination of wait queues */
+	kfree(queue);
+}