1 files changed, 134 insertions, 0 deletions
diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h
new file mode 100644
index 000000000000..e8357f5379fa
--- /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 */

diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h new file mode 100644 index 000000000000..e8357f5379fa --- /dev/null +++ b/include/asm-mips/interrupt.h
@@ -0,0 +1,134 @@
	1	/*
	2	* This file is subject to the terms and conditions of the GNU General Public
	3	* License. See the file "COPYING" in the main directory of this archive
	4	* for more details.
	5	*
	6	* Copyright (C) 1994, 95, 96, 97, 98, 99, 2003 by Ralf Baechle
	7	* Copyright (C) 1996 by Paul M. Antoine
	8	* Copyright (C) 1999 Silicon Graphics
	9	* Copyright (C) 2000 MIPS Technologies, Inc.
	10	*/
	11	#ifndef _ASM_INTERRUPT_H
	12	#define _ASM_INTERRUPT_H
	13
	14	#include <asm/hazards.h>
	15
	16	__asm__ (
	17	".macro\tlocal_irq_enable\n\t"
	18	".set\tpush\n\t"
	19	".set\treorder\n\t"
	20	".set\tnoat\n\t"
	21	"mfc0\t$1,$12\n\t"
	22	"ori\t$1,0x1f\n\t"
	23	"xori\t$1,0x1e\n\t"
	24	"mtc0\t$1,$12\n\t"
	25	"irq_enable_hazard\n\t"
	26	".set\tpop\n\t"
	27	".endm");
	28
	29	static inline void local_irq_enable(void)
	30	{
	31	__asm__ __volatile__(
	32	"local_irq_enable"
	33	: /* no outputs */
	34	: /* no inputs */
	35	: "memory");
	36	}
	37
	38	/*
	39	* For cli() we have to insert nops to make sure that the new value
	40	* has actually arrived in the status register before the end of this
	41	* macro.
	42	* R4000/R4400 need three nops, the R4600 two nops and the R10000 needs
	43	* no nops at all.
	44	*/
	45	__asm__ (
	46	".macro\tlocal_irq_disable\n\t"
	47	".set\tpush\n\t"
	48	".set\tnoat\n\t"
	49	"mfc0\t$1,$12\n\t"
	50	"ori\t$1,1\n\t"
	51	"xori\t$1,1\n\t"
	52	".set\tnoreorder\n\t"
	53	"mtc0\t$1,$12\n\t"
	54	"irq_disable_hazard\n\t"
	55	".set\tpop\n\t"
	56	".endm");
	57
	58	static inline void local_irq_disable(void)
	59	{
	60	__asm__ __volatile__(
	61	"local_irq_disable"
	62	: /* no outputs */
	63	: /* no inputs */
	64	: "memory");
	65	}
	66
	67	__asm__ (
	68	".macro\tlocal_save_flags flags\n\t"
	69	".set\tpush\n\t"
	70	".set\treorder\n\t"
	71	"mfc0\t\\flags, $12\n\t"
	72	".set\tpop\n\t"
	73	".endm");
	74
	75	#define local_save_flags(x) \
	76	__asm__ __volatile__( \
	77	"local_save_flags %0" \
	78	: "=r" (x))
	79
	80	__asm__ (
	81	".macro\tlocal_irq_save result\n\t"
	82	".set\tpush\n\t"
	83	".set\treorder\n\t"
	84	".set\tnoat\n\t"
	85	"mfc0\t\\result, $12\n\t"
	86	"ori\t$1, \\result, 1\n\t"
	87	"xori\t$1, 1\n\t"
	88	".set\tnoreorder\n\t"
	89	"mtc0\t$1, $12\n\t"
	90	"irq_disable_hazard\n\t"
	91	".set\tpop\n\t"
	92	".endm");
	93
	94	#define local_irq_save(x) \
	95	__asm__ __volatile__( \
	96	"local_irq_save\t%0" \
	97	: "=r" (x) \
	98	: /* no inputs */ \
	99	: "memory")
	100
	101	__asm__ (
	102	".macro\tlocal_irq_restore flags\n\t"
	103	".set\tnoreorder\n\t"
	104	".set\tnoat\n\t"
	105	"mfc0\t$1, $12\n\t"
	106	"andi\t\\flags, 1\n\t"
	107	"ori\t$1, 1\n\t"
	108	"xori\t$1, 1\n\t"
	109	"or\t\\flags, $1\n\t"
	110	"mtc0\t\\flags, $12\n\t"
	111	"irq_disable_hazard\n\t"
	112	".set\tat\n\t"
	113	".set\treorder\n\t"
	114	".endm");
	115
	116	#define local_irq_restore(flags) \
	117	do { \
	118	unsigned long __tmp1; \
	119	\
	120	__asm__ __volatile__( \
	121	"local_irq_restore\t%0" \
	122	: "=r" (__tmp1) \
	123	: "0" (flags) \
	124	: "memory"); \
	125	} while(0)
	126
	127	#define irqs_disabled() \
	128	({ \
	129	unsigned long flags; \
	130	local_save_flags(flags); \
	131	!(flags & 1); \
	132	})
	133
	134	#endif /* _ASM_INTERRUPT_H */