Initial import

1 files changed, 75 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
new file mode 100644
index 000000000..ca929e6a3
--- /dev/null
+++ b/arch/xtensa/include/asm/timex.h
@@ -0,0 +1,75 @@
+/*
+ * 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 - 2013 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TIMEX_H
+#define _XTENSA_TIMEX_H
+
+#include <asm/processor.h>
+#include <linux/stringify.h>
+
+#define _INTLEVEL(x)	XCHAL_INT ## x ## _LEVEL
+#define INTLEVEL(x)	_INTLEVEL(x)
+
+#if XCHAL_NUM_TIMERS > 0 && \
+	INTLEVEL(XCHAL_TIMER0_INTERRUPT) <= XCHAL_EXCM_LEVEL
+# define LINUX_TIMER     0
+# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
+#elif XCHAL_NUM_TIMERS > 1 && \
+	INTLEVEL(XCHAL_TIMER1_INTERRUPT) <= XCHAL_EXCM_LEVEL
+# define LINUX_TIMER     1
+# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
+#elif XCHAL_NUM_TIMERS > 2 && \
+	INTLEVEL(XCHAL_TIMER2_INTERRUPT) <= XCHAL_EXCM_LEVEL
+# define LINUX_TIMER     2
+# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
+#else
+# error "Bad timer number for Linux configurations!"
+#endif
+
+extern unsigned long ccount_freq;
+
+typedef unsigned long long cycles_t;
+
+#define get_cycles()	(0)
+
+void local_timer_setup(unsigned cpu);
+
+/*
+ * Register access.
+ */
+
+#define WSR_CCOUNT(r)	  asm volatile ("wsr %0, ccount" :: "a" (r))
+#define RSR_CCOUNT(r)	  asm volatile ("rsr %0, ccount" : "=a" (r))
+#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(SREG_CCOMPARE)"+"__stringify(x) :: "a"(r))
+#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(SREG_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	/* _XTENSA_TIMEX_H */