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authorStephen Rothwell <sfr@canb.auug.org.au>2011-07-25 13:59:46 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2011-07-25 14:53:52 -0400
commit5f00bcb38ef9a980a33c6dbdc0044964b05f22dd (patch)
tree3175fb9375aecb50bde1be0bf4fa8aa8155131d6 /arch/openrisc/include/asm/spr.h
parent34006cee28f7344f9557a4be3816c7891b1bbab1 (diff)
parentb6844e8f64920cdee620157252169ba63afb0c89 (diff)
Merge branch 'master' into devel and apply fixup from Stephen Rothwell:
vfs/nfs: fixup for nfs_open_context change Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'arch/openrisc/include/asm/spr.h')
-rw-r--r--arch/openrisc/include/asm/spr.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/spr.h b/arch/openrisc/include/asm/spr.h
new file mode 100644
index 000000000000..1cccb42dd477
--- /dev/null
+++ b/arch/openrisc/include/asm/spr.h
@@ -0,0 +1,42 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others. All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#ifndef __ASM_OPENRISC_SPR_H
+#define __ASM_OPENRISC_SPR_H
+
+#define mtspr(_spr, _val) __asm__ __volatile__ ( \
+ "l.mtspr r0,%1,%0" \
+ : : "K" (_spr), "r" (_val))
+#define mtspr_off(_spr, _off, _val) __asm__ __volatile__ ( \
+ "l.mtspr %0,%1,%2" \
+ : : "r" (_off), "r" (_val), "K" (_spr))
+
+static inline unsigned long mfspr(unsigned long add)
+{
+ unsigned long ret;
+ __asm__ __volatile__ ("l.mfspr %0,r0,%1" : "=r" (ret) : "K" (add));
+ return ret;
+}
+
+static inline unsigned long mfspr_off(unsigned long add, unsigned long offset)
+{
+ unsigned long ret;
+ __asm__ __volatile__ ("l.mfspr %0,%1,%2" : "=r" (ret)
+ : "r" (offset), "K" (add));
+ return ret;
+}
+
+#endif