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-rw-r--r--arch/arm/include/asm/irqflags.h132
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/arm/include/asm/irqflags.h b/arch/arm/include/asm/irqflags.h
new file mode 100644
index 000000000000..6d09974e6646
--- /dev/null
+++ b/arch/arm/include/asm/irqflags.h
@@ -0,0 +1,132 @@
1#ifndef __ASM_ARM_IRQFLAGS_H
2#define __ASM_ARM_IRQFLAGS_H
3
4#ifdef __KERNEL__
5
6#include <asm/ptrace.h>
7
8/*
9 * CPU interrupt mask handling.
10 */
11#if __LINUX_ARM_ARCH__ >= 6
12
13#define raw_local_irq_save(x) \
14 ({ \
15 __asm__ __volatile__( \
16 "mrs %0, cpsr @ local_irq_save\n" \
17 "cpsid i" \
18 : "=r" (x) : : "memory", "cc"); \
19 })
20
21#define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc")
22#define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc")
23#define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc")
24#define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc")
25
26#else
27
28/*
29 * Save the current interrupt enable state & disable IRQs
30 */
31#define raw_local_irq_save(x) \
32 ({ \
33 unsigned long temp; \
34 (void) (&temp == &x); \
35 __asm__ __volatile__( \
36 "mrs %0, cpsr @ local_irq_save\n" \
37" orr %1, %0, #128\n" \
38" msr cpsr_c, %1" \
39 : "=r" (x), "=r" (temp) \
40 : \
41 : "memory", "cc"); \
42 })
43
44/*
45 * Enable IRQs
46 */
47#define raw_local_irq_enable() \
48 ({ \
49 unsigned long temp; \
50 __asm__ __volatile__( \
51 "mrs %0, cpsr @ local_irq_enable\n" \
52" bic %0, %0, #128\n" \
53" msr cpsr_c, %0" \
54 : "=r" (temp) \
55 : \
56 : "memory", "cc"); \
57 })
58
59/*
60 * Disable IRQs
61 */
62#define raw_local_irq_disable() \
63 ({ \
64 unsigned long temp; \
65 __asm__ __volatile__( \
66 "mrs %0, cpsr @ local_irq_disable\n" \
67" orr %0, %0, #128\n" \
68" msr cpsr_c, %0" \
69 : "=r" (temp) \
70 : \
71 : "memory", "cc"); \
72 })
73
74/*
75 * Enable FIQs
76 */
77#define local_fiq_enable() \
78 ({ \
79 unsigned long temp; \
80 __asm__ __volatile__( \
81 "mrs %0, cpsr @ stf\n" \
82" bic %0, %0, #64\n" \
83" msr cpsr_c, %0" \
84 : "=r" (temp) \
85 : \
86 : "memory", "cc"); \
87 })
88
89/*
90 * Disable FIQs
91 */
92#define local_fiq_disable() \
93 ({ \
94 unsigned long temp; \
95 __asm__ __volatile__( \
96 "mrs %0, cpsr @ clf\n" \
97" orr %0, %0, #64\n" \
98" msr cpsr_c, %0" \
99 : "=r" (temp) \
100 : \
101 : "memory", "cc"); \
102 })
103
104#endif
105
106/*
107 * Save the current interrupt enable state.
108 */
109#define raw_local_save_flags(x) \
110 ({ \
111 __asm__ __volatile__( \
112 "mrs %0, cpsr @ local_save_flags" \
113 : "=r" (x) : : "memory", "cc"); \
114 })
115
116/*
117 * restore saved IRQ & FIQ state
118 */
119#define raw_local_irq_restore(x) \
120 __asm__ __volatile__( \
121 "msr cpsr_c, %0 @ local_irq_restore\n" \
122 : \
123 : "r" (x) \
124 : "memory", "cc")
125
126#define raw_irqs_disabled_flags(flags) \
127({ \
128 (int)((flags) & PSR_I_BIT); \
129})
130
131#endif
132#endif