Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/sh64/lib/udelay.c b/arch/sh64/lib/udelay.c
new file mode 100644
index 00000000000..dad2f254efe
--- /dev/null
+++ b/arch/sh64/lib/udelay.c
@@ -0,0 +1,60 @@
+/*
+ * arch/sh64/lib/udelay.c
+ *
+ * Delay routines, using a pre-computed "loops_per_jiffy" value.
+ *
+ * Copyright (C) 2000, 2001  Paolo Alberelli
+ * Copyright (C) 2003, 2004  Paul Mundt
+ *
+ * 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.
+ */
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <asm/param.h>
+
+extern unsigned long loops_per_jiffy;
+
+/*
+ * Use only for very small delays (< 1 msec).
+ *
+ * The active part of our cycle counter is only 32-bits wide, and
+ * we're treating the difference between two marks as signed.  On
+ * a 1GHz box, that's about 2 seconds.
+ */
+
+void __delay(int loops)
+{
+	long long dummy;
+	__asm__ __volatile__("gettr	tr0, %1\n\t"
+			     "pta	$+4, tr0\n\t"
+			     "addi	%0, -1, %0\n\t"
+			     "bne	%0, r63, tr0\n\t"
+			     "ptabs	%1, tr0\n\t":"=r"(loops),
+			     "=r"(dummy)
+			     :"0"(loops));
+}
+
+void __udelay(unsigned long long usecs, unsigned long lpj)
+{
+	usecs *= (((unsigned long long) HZ << 32) / 1000000) * lpj;
+	__delay((long long) usecs >> 32);
+}
+
+void __ndelay(unsigned long long nsecs, unsigned long lpj)
+{
+	nsecs *= (((unsigned long long) HZ << 32) / 1000000000) * lpj;
+	__delay((long long) nsecs >> 32);
+}
+
+void udelay(unsigned long usecs)
+{
+	__udelay(usecs, loops_per_jiffy);
+}
+
+void ndelay(unsigned long nsecs)
+{
+	__ndelay(nsecs, loops_per_jiffy);
+}
+