1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/timer_32.h b/arch/sparc/include/asm/timer_32.h
new file mode 100644
index 000000000..eecd26969
--- /dev/null
+++ b/arch/sparc/include/asm/timer_32.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * timer.h:  Definitions for the timer chips on the Sparc.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+
+#ifndef _SPARC_TIMER_H
+#define _SPARC_TIMER_H
+
+#include <linux/clocksource.h>
+#include <linux/irqreturn.h>
+
+#include <asm-generic/percpu.h>
+
+#include <asm/cpu_type.h>  /* For SUN4M_NCPUS */
+
+#define SBUS_CLOCK_RATE   2000000 /* 2MHz */
+#define TIMER_VALUE_SHIFT 9
+#define TIMER_VALUE_MASK  0x3fffff
+#define TIMER_LIMIT_BIT   (1 << 31)  /* Bit 31 in Counter-Timer register */
+
+/* The counter timer register has the value offset by 9 bits.
+ * From sun4m manual:
+ * When a counter reaches the value in the corresponding limit register,
+ * the Limit bit is set and the counter is set to 500 nS (i.e. 0x00000200).
+ *
+ * To compensate for this add one to the value.
+ */
+static inline unsigned int timer_value(unsigned int value)
+{
+	return (value + 1) << TIMER_VALUE_SHIFT;
+}
+
+extern volatile u32 __iomem *master_l10_counter;
+
+irqreturn_t notrace timer_interrupt(int dummy, void *dev_id);
+
+#ifdef CONFIG_SMP
+DECLARE_PER_CPU(struct clock_event_device, sparc32_clockevent);
+void register_percpu_ce(int cpu);
+#endif
+
+#endif /* !(_SPARC_TIMER_H) */