1 files changed, 96 insertions, 0 deletions
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
new file mode 100644
index 00000000000..b83a8181d44
--- /dev/null
+++ b/arch/xtensa/include/asm/timex.h
@@ -0,0 +1,96 @@
+/*
+ * include/asm-xtensa/timex.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TIMEX_H
+#define _XTENSA_TIMEX_H
+
+#ifdef __KERNEL__
+
+#include <asm/processor.h>
+#include <linux/stringify.h>
+
+#define _INTLEVEL(x)	XCHAL_INT ## x ## _LEVEL
+#define INTLEVEL(x)	_INTLEVEL(x)
+
+#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1
+# define LINUX_TIMER     0
+# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1
+# define LINUX_TIMER     1
+# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1
+# define LINUX_TIMER     2
+# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
+#else
+# error "Bad timer number for Linux configurations!"
+#endif
+
+#define LINUX_TIMER_MASK        (1L << LINUX_TIMER_INT)
+
+#define CLOCK_TICK_RATE 	1193180	/* (everyone is using this value) */
+#define CLOCK_TICK_FACTOR       20 /* Factor of both 10^6 and CLOCK_TICK_RATE */
+
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
+extern unsigned long ccount_per_jiffy;
+extern unsigned long ccount_nsec;
+#define CCOUNT_PER_JIFFY ccount_per_jiffy
+#define NSEC_PER_CCOUNT  ccount_nsec
+#else
+#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
+#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)
+#endif
+
+
+typedef unsigned long long cycles_t;
+
+/*
+ * Only used for SMP.
+ */
+
+extern cycles_t cacheflush_time;
+
+#define get_cycles()	(0)
+
+
+/*
+ * Register access.
+ */
+
+#define WSR_CCOUNT(r)	  asm volatile ("wsr %0,"__stringify(CCOUNT) :: "a" (r))
+#define RSR_CCOUNT(r)	  asm volatile ("rsr %0,"__stringify(CCOUNT) : "=a" (r))
+#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(CCOMPARE)"+"__stringify(x) :: "a"(r))
+#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(CCOMPARE)"+"__stringify(x) : "=a"(r))
+
+static inline unsigned long get_ccount (void)
+{
+	unsigned long ccount;
+	RSR_CCOUNT(ccount);
+	return ccount;
+}
+
+static inline void set_ccount (unsigned long ccount)
+{
+	WSR_CCOUNT(ccount);
+}
+
+static inline unsigned long get_linux_timer (void)
+{
+	unsigned ccompare;
+	RSR_CCOMPARE(LINUX_TIMER, ccompare);
+	return ccompare;
+}
+
+static inline void set_linux_timer (unsigned long ccompare)
+{
+	WSR_CCOMPARE(LINUX_TIMER, ccompare);
+}
+
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_TIMEX_H */