OpenZFS restructuring - move platform specific headers

Move platform specific Linux headers under include/os/linux/.
Update the build system accordingly to detect the platform.
This lays some of the initial groundwork to supporting building
for other platforms.

As part of this change it was necessary to create both a user
and kernel space sys/simd.h header which can be included in
either context.  No functional change, the source has been
refactored and the relevant #include's updated.

Reviewed-by: Jorgen Lundman <[email protected]>
Reviewed-by: Igor Kozhukhov <[email protected]>
Signed-off-by: Matthew Macy <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #9198 

1 files changed, 100 insertions, 0 deletions

diff --git a/include/os/linux/spl/sys/timer.h b/include/os/linux/spl/sys/timer.h
new file mode 100644
index 000000000..31d89d3b9
--- /dev/null
+++ b/include/os/linux/spl/sys/timer.h
@@ -0,0 +1,100 @@
+/*
+ *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
+ *  Copyright (C) 2007 The Regents of the University of California.
+ *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
+ *  Written by Brian Behlendorf <[email protected]>.
+ *  UCRL-CODE-235197
+ *
+ *  This file is part of the SPL, Solaris Porting Layer.
+ *  For details, see <http://zfsonlinux.org/>.
+ *
+ *  The SPL is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License as published by the
+ *  Free Software Foundation; either version 2 of the License, or (at your
+ *  option) any later version.
+ *
+ *  The SPL is distributed in the hope that it will be useful, but WITHOUT
+ *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ *  for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SPL_TIMER_H
+#define	_SPL_TIMER_H
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/time.h>
+#include <linux/timer.h>
+
+#define	lbolt				((clock_t)jiffies)
+#define	lbolt64				((int64_t)get_jiffies_64())
+
+#define	ddi_get_lbolt()			((clock_t)jiffies)
+#define	ddi_get_lbolt64()		((int64_t)get_jiffies_64())
+
+#define	ddi_time_before(a, b)		(typecheck(clock_t, a) && \
+					typecheck(clock_t, b) && \
+					((a) - (b) < 0))
+#define	ddi_time_after(a, b)		ddi_time_before(b, a)
+#define	ddi_time_before_eq(a, b)	(!ddi_time_after(a, b))
+#define	ddi_time_after_eq(a, b)		ddi_time_before_eq(b, a)
+
+#define	ddi_time_before64(a, b)		(typecheck(int64_t, a) && \
+					typecheck(int64_t, b) && \
+					((a) - (b) < 0))
+#define	ddi_time_after64(a, b)		ddi_time_before64(b, a)
+#define	ddi_time_before_eq64(a, b)	(!ddi_time_after64(a, b))
+#define	ddi_time_after_eq64(a, b)	ddi_time_before_eq64(b, a)
+
+#define	delay(ticks)			schedule_timeout_uninterruptible(ticks)
+
+/* usleep_range() introduced in 2.6.36 */
+#ifndef HAVE_USLEEP_RANGE
+static inline void
+usleep_range(unsigned long min, unsigned long max)
+{
+	unsigned int min_ms = min / USEC_PER_MSEC;
+
+	if (min >= MAX_UDELAY_MS)
+		msleep(min_ms);
+	else
+		udelay(min);
+}
+#endif /* HAVE_USLEEP_RANGE */
+
+#define	SEC_TO_TICK(sec)		((sec) * HZ)
+#define	MSEC_TO_TICK(ms)		msecs_to_jiffies(ms)
+#define	USEC_TO_TICK(us)		usecs_to_jiffies(us)
+#define	NSEC_TO_TICK(ns)		usecs_to_jiffies(ns / NSEC_PER_USEC)
+
+#ifndef from_timer
+#define	from_timer(var, timer, timer_field) \
+	container_of(timer, typeof(*var), timer_field)
+#endif
+
+#ifdef HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST
+typedef struct timer_list *spl_timer_list_t;
+#else
+typedef unsigned long spl_timer_list_t;
+#endif
+
+#ifndef HAVE_KERNEL_TIMER_SETUP
+
+static inline void
+timer_setup(struct timer_list *timer, void (*func)(spl_timer_list_t), u32 fl)
+{
+#ifdef HAVE_KERNEL_TIMER_LIST_FLAGS
+	(timer)->flags = fl;
+#endif
+	init_timer(timer);
+	setup_timer(timer, func, (spl_timer_list_t)(timer));
+}
+
+#endif /* HAVE_KERNEL_TIMER_SETUP */
+
+#endif  /* _SPL_TIMER_H */