patch-2.4.19 linux-2.4.19/include/asm-ia64/sn/mmtimer_private.h

• Lines: 43
• Date: Fri Aug 2 17:39:45 2002
• Orig file: linux-2.4.18/include/asm-ia64/sn/mmtimer_private.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/include/asm-ia64/sn/mmtimer_private.h linux-2.4.19/include/asm-ia64/sn/mmtimer_private.h
@@ -0,0 +1,42 @@
+/*
+ * Intel Multimedia Timer device interface
+ *
+ * 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) 2001-2002 Silicon Graphics, Inc.  All rights reserved.
+ *
+ * Helper file for the SN implementation of mmtimers
+ *
+ * 11/01/01 - jbarnes - initial revision
+ */
+
+#ifndef _SN_MMTIMER_PRIVATE_H
+
+#define RTC_BITS 55 /* 55 bits for this implementation */
+#define NUM_COMPARATORS 2 /* two comparison registers in SN1 */
+
+/*
+ * Check for an interrupt and clear the pending bit if
+ * one is waiting.
+ */
+#define MMTIMER_INT_PENDING(x) (x ? *(RTC_INT_PENDING_B_ADDR) : *(RTC_INT_PENDING_A_ADDR))
+
+/*
+ * Set interrupts on RTC 'x' to 'v' (true or false)
+ */
+#define MMTIMER_SET_INT(x,v) (x ? (*(RTC_INT_ENABLED_B_ADDR) = (unsigned long)(v)) : (*(RTC_INT_ENABLED_A_ADDR) = (unsigned long)(v)))
+
+#define MMTIMER_ENABLE_INT(x) MMTIMER_SET_INT(x, 1)
+#define MMTIMER_DISABLE_INT(x) MMTIMER_SET_INT(x, 0)
+
+typedef struct mmtimer {
+	spinlock_t timer_lock;
+	unsigned long periodic;
+	int signo;
+	volatile unsigned long *compare;
+	struct task_struct *process;
+} mmtimer_t;
+
+#endif /* _SN_LINUX_MMTIMER_PRIVATE_H */