1 files changed, 87 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/delay.h b/sys/compat/linuxkpi/common/include/linux/delay.h
new file mode 100644
index 000000000000..f19d1a759c26
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/delay.h
@@ -0,0 +1,87 @@
+/*-
+ * Copyright (c) 2010 Isilon Systems, Inc.
+ * Copyright (c) 2010 iX Systems, Inc.
+ * Copyright (c) 2010 Panasas, Inc.
+ * Copyright (c) 2013-2021 Mellanox Technologies, Ltd.
+ * Copyright (c) 2014 François Tigeot
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _LINUXKPI_LINUX_DELAY_H_
+#define	_LINUXKPI_LINUX_DELAY_H_
+
+#include <linux/jiffies.h>
+#include <sys/systm.h>
+
+static inline void
+linux_msleep(unsigned int ms)
+{
+	/* guard against invalid values */
+	if (ms == 0)
+		ms = 1;
+	pause_sbt("lnxsleep", mstosbt(ms), 0, C_HARDCLOCK);
+}
+
+#undef msleep
+#define	msleep(ms) linux_msleep(ms)
+
+#undef msleep_interruptible
+#define	msleep_interruptible(ms) linux_msleep_interruptible(ms)
+
+#define	udelay(t)	DELAY(t)
+
+static inline void
+mdelay(unsigned long msecs)
+{
+	while (msecs--)
+		DELAY(1000);
+}
+
+static inline void
+ndelay(unsigned long x)
+{
+	DELAY(howmany(x, 1000));
+}
+
+static inline void
+usleep_range(unsigned long min, unsigned long max)
+{
+	/* guard against invalid values */
+	if (min == 0)
+		min = 1;
+	pause_sbt("lnxsleep", ustosbt(min), 0, C_HARDCLOCK);
+}
+
+extern unsigned int linux_msleep_interruptible(unsigned int ms);
+
+static inline void
+fsleep(unsigned long us)
+{
+
+	if (us < 10)
+		udelay(us);
+	else
+		usleep_range(us, us);
+}
+
+#endif	/* _LINUXKPI_LINUX_DELAY_H_ */