C6X: time management

Original port to early 2.6 kernel using TI COFF toolchain.
Brought up to date by Mark Salter <msalter@redhat.com>

Signed-off-by: Aurelien Jacquiot <a-jacquiot@ti.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

2 files changed, 39 insertions, 0 deletions

diff --git a/arch/c6x/include/asm/timer64.h b/arch/c6x/include/asm/timer64.h
new file mode 100644
index 000000000000..bbe27bb9887e
--- /dev/null
+++ b/arch/c6x/include/asm/timer64.h
@@ -0,0 +1,6 @@
+#ifndef _C6X_TIMER64_H
+#define _C6X_TIMER64_H
+
+extern void __init timer64_init(void);
+
+#endif /* _C6X_TIMER64_H */
diff --git a/arch/c6x/include/asm/timex.h b/arch/c6x/include/asm/timex.h
new file mode 100644
index 000000000000..508c3ec971f9
--- /dev/null
+++ b/arch/c6x/include/asm/timex.h
@@ -0,0 +1,33 @@
+/*
+ *  Port on Texas Instruments TMS320C6x architecture
+ *
+ *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
+ *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
+ *
+ *  Modified for 2.6.34: Mark Salter <msalter@redhat.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+#ifndef _ASM_C6X_TIMEX_H
+#define _ASM_C6X_TIMEX_H
+
+#define CLOCK_TICK_RATE ((1000 * 1000000UL) / 6)
+
+/* 64-bit timestamp */
+typedef unsigned long long cycles_t;
+
+static inline cycles_t get_cycles(void)
+{
+        unsigned l, h;
+
+        asm volatile (" dint\n"
+                      " mvc .s2 TSCL,%0\n"
+                      " mvc .s2 TSCH,%1\n"
+                      " rint\n"
+                      : "=b"(l), "=b"(h));
+        return ((cycles_t)h << 32) | l;
+}
+
+#endif /* _ASM_C6X_TIMEX_H */