summaryrefslogtreecommitdiff
path: root/arch/sh/kernel/irq_32.c
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2009-10-17 21:06:39 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-10-17 21:06:39 +0900
commit03fdb708926d5df2d9b9e62222c1666e20caa9e3 (patch)
tree531492d3aa5fea519f348d128e3405bc96adac51 /arch/sh/kernel/irq_32.c
parentcae19b5902d52ff059f5df98ea993a00e5686af1 (diff)
sh: Convert to asm-generic/irqflags.h.
This simplifies the irqflags support by switching over to the asm-generic version. The necessary support functions are brought out-of-line for both SHcompact and SHmedia instruction sets. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/irq_32.c')
-rw-r--r--arch/sh/kernel/irq_32.c57
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/sh/kernel/irq_32.c b/arch/sh/kernel/irq_32.c
new file mode 100644
index 000000000000..b98a694ead31
--- /dev/null
+++ b/arch/sh/kernel/irq_32.c
@@ -0,0 +1,57 @@
+/*
+ * SHcompact irqflags support
+ *
+ * Copyright (C) 2006 - 2009 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/irqflags.h>
+#include <linux/module.h>
+
+void raw_local_irq_restore(unsigned long flags)
+{
+ unsigned long __dummy0, __dummy1;
+
+ if (flags == RAW_IRQ_DISABLED) {
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "or #0xf0, %0\n\t"
+ "ldc %0, sr\n\t"
+ : "=&z" (__dummy0)
+ : /* no inputs */
+ : "memory"
+ );
+ } else {
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and %1, %0\n\t"
+#ifdef CONFIG_CPU_HAS_SR_RB
+ "stc r6_bank, %1\n\t"
+ "or %1, %0\n\t"
+#endif
+ "ldc %0, sr\n\t"
+ : "=&r" (__dummy0), "=r" (__dummy1)
+ : "1" (~RAW_IRQ_DISABLED)
+ : "memory"
+ );
+ }
+}
+EXPORT_SYMBOL(raw_local_irq_restore);
+
+unsigned long __raw_local_save_flags(void)
+{
+ unsigned long flags;
+
+ __asm__ __volatile__ (
+ "stc sr, %0\n\t"
+ "and #0xf0, %0\n\t"
+ : "=&z" (flags)
+ : /* no inputs */
+ : "memory"
+ );
+
+ return flags;
+}
+EXPORT_SYMBOL(__raw_local_save_flags);