Linux-2.6.12-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!
diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h
new file mode 100644
index 0000000..e8357f5
--- /dev/null
+++ b/include/asm-mips/interrupt.h
@@ -0,0 +1,134 @@
+/*
+ * 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) 1994, 95, 96, 97, 98, 99, 2003 by Ralf Baechle
+ * Copyright (C) 1996 by Paul M. Antoine
+ * Copyright (C) 1999 Silicon Graphics
+ * Copyright (C) 2000 MIPS Technologies, Inc.
+ */
+#ifndef _ASM_INTERRUPT_H
+#define _ASM_INTERRUPT_H
+
+#include <asm/hazards.h>
+
+__asm__ (
+ ".macro\tlocal_irq_enable\n\t"
+ ".set\tpush\n\t"
+ ".set\treorder\n\t"
+ ".set\tnoat\n\t"
+ "mfc0\t$1,$12\n\t"
+ "ori\t$1,0x1f\n\t"
+ "xori\t$1,0x1e\n\t"
+ "mtc0\t$1,$12\n\t"
+ "irq_enable_hazard\n\t"
+ ".set\tpop\n\t"
+ ".endm");
+
+static inline void local_irq_enable(void)
+{
+ __asm__ __volatile__(
+ "local_irq_enable"
+ : /* no outputs */
+ : /* no inputs */
+ : "memory");
+}
+
+/*
+ * For cli() we have to insert nops to make sure that the new value
+ * has actually arrived in the status register before the end of this
+ * macro.
+ * R4000/R4400 need three nops, the R4600 two nops and the R10000 needs
+ * no nops at all.
+ */
+__asm__ (
+ ".macro\tlocal_irq_disable\n\t"
+ ".set\tpush\n\t"
+ ".set\tnoat\n\t"
+ "mfc0\t$1,$12\n\t"
+ "ori\t$1,1\n\t"
+ "xori\t$1,1\n\t"
+ ".set\tnoreorder\n\t"
+ "mtc0\t$1,$12\n\t"
+ "irq_disable_hazard\n\t"
+ ".set\tpop\n\t"
+ ".endm");
+
+static inline void local_irq_disable(void)
+{
+ __asm__ __volatile__(
+ "local_irq_disable"
+ : /* no outputs */
+ : /* no inputs */
+ : "memory");
+}
+
+__asm__ (
+ ".macro\tlocal_save_flags flags\n\t"
+ ".set\tpush\n\t"
+ ".set\treorder\n\t"
+ "mfc0\t\\flags, $12\n\t"
+ ".set\tpop\n\t"
+ ".endm");
+
+#define local_save_flags(x) \
+__asm__ __volatile__( \
+ "local_save_flags %0" \
+ : "=r" (x))
+
+__asm__ (
+ ".macro\tlocal_irq_save result\n\t"
+ ".set\tpush\n\t"
+ ".set\treorder\n\t"
+ ".set\tnoat\n\t"
+ "mfc0\t\\result, $12\n\t"
+ "ori\t$1, \\result, 1\n\t"
+ "xori\t$1, 1\n\t"
+ ".set\tnoreorder\n\t"
+ "mtc0\t$1, $12\n\t"
+ "irq_disable_hazard\n\t"
+ ".set\tpop\n\t"
+ ".endm");
+
+#define local_irq_save(x) \
+__asm__ __volatile__( \
+ "local_irq_save\t%0" \
+ : "=r" (x) \
+ : /* no inputs */ \
+ : "memory")
+
+__asm__ (
+ ".macro\tlocal_irq_restore flags\n\t"
+ ".set\tnoreorder\n\t"
+ ".set\tnoat\n\t"
+ "mfc0\t$1, $12\n\t"
+ "andi\t\\flags, 1\n\t"
+ "ori\t$1, 1\n\t"
+ "xori\t$1, 1\n\t"
+ "or\t\\flags, $1\n\t"
+ "mtc0\t\\flags, $12\n\t"
+ "irq_disable_hazard\n\t"
+ ".set\tat\n\t"
+ ".set\treorder\n\t"
+ ".endm");
+
+#define local_irq_restore(flags) \
+do { \
+ unsigned long __tmp1; \
+ \
+ __asm__ __volatile__( \
+ "local_irq_restore\t%0" \
+ : "=r" (__tmp1) \
+ : "0" (flags) \
+ : "memory"); \
+} while(0)
+
+#define irqs_disabled() \
+({ \
+ unsigned long flags; \
+ local_save_flags(flags); \
+ !(flags & 1); \
+})
+
+#endif /* _ASM_INTERRUPT_H */