1 files changed, 64 insertions, 0 deletions
diff --git a/include/asm-ia64/sn/clksupport.h b/include/asm-ia64/sn/clksupport.h
new file mode 100644
index 000000000..6a2d2c009
--- /dev/null
+++ b/include/asm-ia64/sn/clksupport.h
@@ -0,0 +1,64 @@
+/*
+ *
+ * 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) 2000 Silicon Graphics, Inc.
+ * Copyright (C) 2000 by Jack Steiner (steiner@sgi.com)
+ */
+
+
+#ifndef  _ASM_KSYS_CLKSUPPORT_H
+#define _ASM_KSYS_CLKSUPPORT_H
+
+/* #include <sys/mips_addrspace.h> */
+
+#if SN
+#include <asm/sn/agent.h>
+#include <asm/sn/intr_public.h>
+typedef hubreg_t clkreg_t;
+extern nasid_t master_nasid;
+
+#define GET_LOCAL_RTC		(clkreg_t)LOCAL_HUB_L(PI_RT_COUNT)
+#define DISABLE_TMO_INTR()	if  (cpuid_to_localslice(cpuid())) \
+					REMOTE_HUB_PI_S(get_nasid(),\
+						cputosubnode(cpuid()),\
+						PI_RT_COMPARE_B, 0); \
+				else \
+					REMOTE_HUB_PI_S(get_nasid(),\
+						cputosubnode(cpuid()),\
+						PI_RT_COMPARE_A, 0);
+
+/* This is a hack; we really need to figure these values out dynamically */
+/* 
+ * Since 800 ns works very well with various HUB frequencies, such as
+ * 360, 380, 390 and 400 MHZ, we use 800 ns rtc cycle time.
+ */
+#define NSEC_PER_CYCLE		800
+#define CYCLE_PER_SEC		(NSEC_PER_SEC/NSEC_PER_CYCLE)
+/*
+ * Number of cycles per profiling intr 
+ */
+#define CLK_FCLOCK_FAST_FREQ	1250
+#define CLK_FCLOCK_SLOW_FREQ	0
+/* The is the address that the user will use to mmap the cycle counter */
+#define CLK_CYCLE_ADDRESS_FOR_USER LOCAL_HUB_ADDR(PI_RT_COUNT)
+
+#elif IP30
+#include <sys/cpu.h>
+typedef heartreg_t clkreg_t;
+#define NSEC_PER_CYCLE		80
+#define CYCLE_PER_SEC		(NSEC_PER_SEC/NSEC_PER_CYCLE)
+#define GET_LOCAL_RTC	*((volatile clkreg_t *)PHYS_TO_COMPATK1(HEART_COUNT))
+#define DISABLE_TMO_INTR()
+#define CLK_CYCLE_ADDRESS_FOR_USER PHYS_TO_K1(HEART_COUNT)
+#define CLK_FCLOCK_SLOW_FREQ (CYCLE_PER_SEC / HZ)
+#endif
+
+/* Prototypes */
+extern void init_timebase(void);
+extern void fastick_maint(struct eframe_s *);
+extern int audioclock;
+extern int prfclk_enabled_cnt;
+#endif  /* _ASM_KSYS_CLKSUPPORT_H */