diff options
Diffstat (limited to 'arch/xtensa')
-rw-r--r-- | arch/xtensa/include/asm/irqflags.h | 58 | ||||
-rw-r--r-- | arch/xtensa/include/asm/system.h | 33 |
2 files changed, 59 insertions, 32 deletions
diff --git a/arch/xtensa/include/asm/irqflags.h b/arch/xtensa/include/asm/irqflags.h new file mode 100644 index 000000000000..dae9a8bdcb17 --- /dev/null +++ b/arch/xtensa/include/asm/irqflags.h | |||
@@ -0,0 +1,58 @@ | |||
1 | /* | ||
2 | * Xtensa IRQ flags handling functions | ||
3 | * | ||
4 | * This file is subject to the terms and conditions of the GNU General Public | ||
5 | * License. See the file "COPYING" in the main directory of this archive | ||
6 | * for more details. | ||
7 | * | ||
8 | * Copyright (C) 2001 - 2005 Tensilica Inc. | ||
9 | */ | ||
10 | |||
11 | #ifndef _XTENSA_IRQFLAGS_H | ||
12 | #define _XTENSA_IRQFLAGS_H | ||
13 | |||
14 | #include <linux/types.h> | ||
15 | |||
16 | static inline unsigned long arch_local_save_flags(void) | ||
17 | { | ||
18 | unsigned long flags; | ||
19 | asm volatile("rsr %0,"__stringify(PS) : "=a" (flags)); | ||
20 | return flags; | ||
21 | } | ||
22 | |||
23 | static inline unsigned long arch_local_irq_save(void) | ||
24 | { | ||
25 | unsigned long flags; | ||
26 | asm volatile("rsil %0, "__stringify(LOCKLEVEL) | ||
27 | : "=a" (flags) :: "memory"); | ||
28 | return flags; | ||
29 | } | ||
30 | |||
31 | static inline void arch_local_irq_disable(void) | ||
32 | { | ||
33 | arch_local_irq_save(); | ||
34 | } | ||
35 | |||
36 | static inline void arch_local_irq_enable(void) | ||
37 | { | ||
38 | unsigned long flags; | ||
39 | asm volatile("rsil %0, 0" : "=a" (flags) :: "memory"); | ||
40 | } | ||
41 | |||
42 | static inline void arch_local_irq_restore(unsigned long flags) | ||
43 | { | ||
44 | asm volatile("wsr %0, "__stringify(PS)" ; rsync" | ||
45 | :: "a" (flags) : "memory"); | ||
46 | } | ||
47 | |||
48 | static inline bool arch_irqs_disabled_flags(unsigned long flags) | ||
49 | { | ||
50 | return (flags & 0xf) != 0; | ||
51 | } | ||
52 | |||
53 | static inline bool arch_irqs_disabled(void) | ||
54 | { | ||
55 | return arch_irqs_disabled_flags(arch_local_save_flags()); | ||
56 | } | ||
57 | |||
58 | #endif /* _XTENSA_IRQFLAGS_H */ | ||
diff --git a/arch/xtensa/include/asm/system.h b/arch/xtensa/include/asm/system.h index 62b1e8f3c13c..1e7e09ab6cd7 100644 --- a/arch/xtensa/include/asm/system.h +++ b/arch/xtensa/include/asm/system.h | |||
@@ -12,41 +12,10 @@ | |||
12 | #define _XTENSA_SYSTEM_H | 12 | #define _XTENSA_SYSTEM_H |
13 | 13 | ||
14 | #include <linux/stringify.h> | 14 | #include <linux/stringify.h> |
15 | #include <linux/irqflags.h> | ||
15 | 16 | ||
16 | #include <asm/processor.h> | 17 | #include <asm/processor.h> |
17 | 18 | ||
18 | /* interrupt control */ | ||
19 | |||
20 | #define local_save_flags(x) \ | ||
21 | __asm__ __volatile__ ("rsr %0,"__stringify(PS) : "=a" (x)); | ||
22 | #define local_irq_restore(x) do { \ | ||
23 | __asm__ __volatile__ ("wsr %0, "__stringify(PS)" ; rsync" \ | ||
24 | :: "a" (x) : "memory"); } while(0); | ||
25 | #define local_irq_save(x) do { \ | ||
26 | __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL) \ | ||
27 | : "=a" (x) :: "memory");} while(0); | ||
28 | |||
29 | static inline void local_irq_disable(void) | ||
30 | { | ||
31 | unsigned long flags; | ||
32 | __asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL) | ||
33 | : "=a" (flags) :: "memory"); | ||
34 | } | ||
35 | static inline void local_irq_enable(void) | ||
36 | { | ||
37 | unsigned long flags; | ||
38 | __asm__ __volatile__ ("rsil %0, 0" : "=a" (flags) :: "memory"); | ||
39 | |||
40 | } | ||
41 | |||
42 | static inline int irqs_disabled(void) | ||
43 | { | ||
44 | unsigned long flags; | ||
45 | local_save_flags(flags); | ||
46 | return flags & 0xf; | ||
47 | } | ||
48 | |||
49 | |||
50 | #define smp_read_barrier_depends() do { } while(0) | 19 | #define smp_read_barrier_depends() do { } while(0) |
51 | #define read_barrier_depends() do { } while(0) | 20 | #define read_barrier_depends() do { } while(0) |
52 | 21 | ||