Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> | |
1da177e4 | 3 | */ |
b671ad2b KG |
4 | #ifndef _ASM_POWERPC_HW_IRQ_H |
5 | #define _ASM_POWERPC_HW_IRQ_H | |
6 | ||
1da177e4 | 7 | #ifdef __KERNEL__ |
1da177e4 | 8 | |
1da177e4 | 9 | #include <linux/errno.h> |
d04c56f7 | 10 | #include <linux/compiler.h> |
b671ad2b KG |
11 | #include <asm/ptrace.h> |
12 | #include <asm/processor.h> | |
1da177e4 | 13 | |
c7aeffc4 | 14 | extern void timer_interrupt(struct pt_regs *); |
1da177e4 | 15 | |
d04c56f7 PM |
16 | #ifdef CONFIG_PPC64 |
17 | #include <asm/paca.h> | |
18 | ||
19 | static inline unsigned long local_get_flags(void) | |
20 | { | |
ef2b343e HD |
21 | unsigned long flags; |
22 | ||
23 | __asm__ __volatile__("lbz %0,%1(13)" | |
24 | : "=r" (flags) | |
25 | : "i" (offsetof(struct paca_struct, soft_enabled))); | |
26 | ||
27 | return flags; | |
d04c56f7 PM |
28 | } |
29 | ||
945feb17 | 30 | static inline unsigned long raw_local_irq_disable(void) |
d04c56f7 | 31 | { |
ef2b343e HD |
32 | unsigned long flags, zero; |
33 | ||
34 | __asm__ __volatile__("li %1,0; lbz %0,%2(13); stb %1,%2(13)" | |
35 | : "=r" (flags), "=&r" (zero) | |
36 | : "i" (offsetof(struct paca_struct, soft_enabled)) | |
37 | : "memory"); | |
38 | ||
39 | return flags; | |
d04c56f7 | 40 | } |
1da177e4 | 41 | |
945feb17 | 42 | extern void raw_local_irq_restore(unsigned long); |
d04c56f7 | 43 | extern void iseries_handle_interrupts(void); |
1da177e4 | 44 | |
945feb17 BH |
45 | #define raw_local_irq_enable() raw_local_irq_restore(1) |
46 | #define raw_local_save_flags(flags) ((flags) = local_get_flags()) | |
47 | #define raw_local_irq_save(flags) ((flags) = raw_local_irq_disable()) | |
1da177e4 | 48 | |
945feb17 BH |
49 | #define raw_irqs_disabled() (local_get_flags() == 0) |
50 | #define raw_irqs_disabled_flags(flags) ((flags) == 0) | |
1da177e4 | 51 | |
2d27cfd3 BH |
52 | #ifdef CONFIG_PPC_BOOK3E |
53 | #define __hard_irq_enable() __asm__ __volatile__("wrteei 1": : :"memory"); | |
54 | #define __hard_irq_disable() __asm__ __volatile__("wrteei 0": : :"memory"); | |
55 | #else | |
e1fa2e13 BH |
56 | #define __hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1) |
57 | #define __hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1) | |
2d27cfd3 | 58 | #endif |
e1fa2e13 BH |
59 | |
60 | #define hard_irq_disable() \ | |
61 | do { \ | |
62 | __hard_irq_disable(); \ | |
63 | get_paca()->soft_enabled = 0; \ | |
64 | get_paca()->hard_enabled = 0; \ | |
65 | } while(0) | |
d04c56f7 | 66 | |
e0eca07b SR |
67 | static inline int irqs_disabled_flags(unsigned long flags) |
68 | { | |
69 | return flags == 0; | |
70 | } | |
71 | ||
1da177e4 LT |
72 | #else |
73 | ||
b671ad2b KG |
74 | #if defined(CONFIG_BOOKE) |
75 | #define SET_MSR_EE(x) mtmsr(x) | |
5d38902c | 76 | #define raw_local_irq_restore(flags) __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory") |
b671ad2b KG |
77 | #else |
78 | #define SET_MSR_EE(x) mtmsr(x) | |
5d38902c | 79 | #define raw_local_irq_restore(flags) mtmsr(flags) |
b671ad2b | 80 | #endif |
1da177e4 | 81 | |
5d38902c | 82 | static inline void raw_local_irq_disable(void) |
1da177e4 | 83 | { |
b671ad2b KG |
84 | #ifdef CONFIG_BOOKE |
85 | __asm__ __volatile__("wrteei 0": : :"memory"); | |
86 | #else | |
1da177e4 | 87 | unsigned long msr; |
4c75f84f | 88 | |
b671ad2b KG |
89 | msr = mfmsr(); |
90 | SET_MSR_EE(msr & ~MSR_EE); | |
91 | #endif | |
1da177e4 LT |
92 | } |
93 | ||
5d38902c | 94 | static inline void raw_local_irq_enable(void) |
1da177e4 | 95 | { |
b671ad2b KG |
96 | #ifdef CONFIG_BOOKE |
97 | __asm__ __volatile__("wrteei 1": : :"memory"); | |
98 | #else | |
1da177e4 | 99 | unsigned long msr; |
4c75f84f | 100 | |
1da177e4 | 101 | msr = mfmsr(); |
b671ad2b KG |
102 | SET_MSR_EE(msr | MSR_EE); |
103 | #endif | |
1da177e4 LT |
104 | } |
105 | ||
5d38902c | 106 | static inline void raw_local_irq_save_ptr(unsigned long *flags) |
1da177e4 LT |
107 | { |
108 | unsigned long msr; | |
109 | msr = mfmsr(); | |
110 | *flags = msr; | |
b671ad2b KG |
111 | #ifdef CONFIG_BOOKE |
112 | __asm__ __volatile__("wrteei 0": : :"memory"); | |
113 | #else | |
114 | SET_MSR_EE(msr & ~MSR_EE); | |
115 | #endif | |
1da177e4 LT |
116 | } |
117 | ||
5d38902c BH |
118 | #define raw_local_save_flags(flags) ((flags) = mfmsr()) |
119 | #define raw_local_irq_save(flags) raw_local_irq_save_ptr(&flags) | |
120 | #define raw_irqs_disabled() ((mfmsr() & MSR_EE) == 0) | |
121 | #define raw_irqs_disabled_flags(flags) (((flags) & MSR_EE) == 0) | |
1da177e4 | 122 | |
5d38902c | 123 | #define hard_irq_disable() raw_local_irq_disable() |
143db67a | 124 | |
e0eca07b SR |
125 | static inline int irqs_disabled_flags(unsigned long flags) |
126 | { | |
127 | return (flags & MSR_EE) == 0; | |
128 | } | |
129 | ||
d04c56f7 | 130 | #endif /* CONFIG_PPC64 */ |
1da177e4 | 131 | |
c0ad90a3 IM |
132 | /* |
133 | * interrupt-retrigger: should we handle this via lost interrupts and IPIs | |
134 | * or should we not care like we do now ? --BenH. | |
1da177e4 | 135 | */ |
353bca5e | 136 | struct irq_chip; |
b671ad2b | 137 | |
cdd6c482 | 138 | #ifdef CONFIG_PERF_EVENTS |
105988c0 PM |
139 | |
140 | #ifdef CONFIG_PPC64 | |
cdd6c482 | 141 | static inline unsigned long test_perf_event_pending(void) |
93a6d3ce PM |
142 | { |
143 | unsigned long x; | |
144 | ||
145 | asm volatile("lbz %0,%1(13)" | |
146 | : "=r" (x) | |
cdd6c482 | 147 | : "i" (offsetof(struct paca_struct, perf_event_pending))); |
93a6d3ce PM |
148 | return x; |
149 | } | |
150 | ||
cdd6c482 | 151 | static inline void set_perf_event_pending(void) |
93a6d3ce PM |
152 | { |
153 | asm volatile("stb %0,%1(13)" : : | |
b6c5a71d | 154 | "r" (1), |
cdd6c482 | 155 | "i" (offsetof(struct paca_struct, perf_event_pending))); |
b6c5a71d PM |
156 | } |
157 | ||
cdd6c482 | 158 | static inline void clear_perf_event_pending(void) |
b6c5a71d PM |
159 | { |
160 | asm volatile("stb %0,%1(13)" : : | |
161 | "r" (0), | |
cdd6c482 | 162 | "i" (offsetof(struct paca_struct, perf_event_pending))); |
93a6d3ce | 163 | } |
105988c0 | 164 | #endif /* CONFIG_PPC64 */ |
93a6d3ce | 165 | |
cdd6c482 | 166 | #else /* CONFIG_PERF_EVENTS */ |
93a6d3ce | 167 | |
cdd6c482 | 168 | static inline unsigned long test_perf_event_pending(void) |
93a6d3ce PM |
169 | { |
170 | return 0; | |
171 | } | |
172 | ||
cdd6c482 IM |
173 | static inline void clear_perf_event_pending(void) {} |
174 | #endif /* CONFIG_PERF_EVENTS */ | |
93a6d3ce | 175 | |
b671ad2b KG |
176 | #endif /* __KERNEL__ */ |
177 | #endif /* _ASM_POWERPC_HW_IRQ_H */ |