powerpc: Get 64-bit configs to compile with ARCH=powerpc
[linux-2.6.git] / include / asm-powerpc / hw_irq.h
1 /*
2  * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
3  */
4 #ifndef _ASM_POWERPC_HW_IRQ_H
5 #define _ASM_POWERPC_HW_IRQ_H
6
7 #ifdef __KERNEL__
8
9 #include <linux/config.h>
10 #include <linux/errno.h>
11 #include <asm/ptrace.h>
12 #include <asm/processor.h>
13
14 extern void timer_interrupt(struct pt_regs *);
15 extern void ppc_irq_dispatch_handler(struct pt_regs *regs, int irq);
16
17 #ifdef CONFIG_PPC_ISERIES
18
19 extern unsigned long local_get_flags(void);
20 extern unsigned long local_irq_disable(void);
21 extern void local_irq_restore(unsigned long);
22
23 #define local_irq_enable()      local_irq_restore(1)
24 #define local_save_flags(flags) ((flags) = local_get_flags())
25 #define local_irq_save(flags)   ((flags) = local_irq_disable())
26
27 #define irqs_disabled()         (local_get_flags() == 0)
28
29 #else
30
31 #if defined(CONFIG_BOOKE)
32 #define SET_MSR_EE(x)   mtmsr(x)
33 #define local_irq_restore(flags)        __asm__ __volatile__("wrtee %0" : : "r" (flags) : "memory")
34 #elif defined(__powerpc64__)
35 #define SET_MSR_EE(x)   __mtmsrd(x, 1)
36 #define local_irq_restore(flags) do { \
37         __asm__ __volatile__("": : :"memory"); \
38         __mtmsrd((flags), 1); \
39 } while(0)
40 #else
41 #define SET_MSR_EE(x)   mtmsr(x)
42 #define local_irq_restore(flags)        mtmsr(flags)
43 #endif
44
45 static inline void local_irq_disable(void)
46 {
47 #ifdef CONFIG_BOOKE
48         __asm__ __volatile__("wrteei 0": : :"memory");
49 #else
50         unsigned long msr;
51         __asm__ __volatile__("": : :"memory");
52         msr = mfmsr();
53         SET_MSR_EE(msr & ~MSR_EE);
54 #endif
55 }
56
57 static inline void local_irq_enable(void)
58 {
59 #ifdef CONFIG_BOOKE
60         __asm__ __volatile__("wrteei 1": : :"memory");
61 #else
62         unsigned long msr;
63         __asm__ __volatile__("": : :"memory");
64         msr = mfmsr();
65         SET_MSR_EE(msr | MSR_EE);
66 #endif
67 }
68
69 static inline void local_irq_save_ptr(unsigned long *flags)
70 {
71         unsigned long msr;
72         msr = mfmsr();
73         *flags = msr;
74 #ifdef CONFIG_BOOKE
75         __asm__ __volatile__("wrteei 0": : :"memory");
76 #else
77         SET_MSR_EE(msr & ~MSR_EE);
78 #endif
79         __asm__ __volatile__("": : :"memory");
80 }
81
82 #define local_save_flags(flags) ((flags) = mfmsr())
83 #define local_irq_save(flags)   local_irq_save_ptr(&flags)
84 #define irqs_disabled()         ((mfmsr() & MSR_EE) == 0)
85
86 #endif /* CONFIG_PPC_ISERIES */
87
88 #define mask_irq(irq)                                           \
89         ({                                                      \
90                 irq_desc_t *desc = get_irq_desc(irq);           \
91                 if (desc->handler && desc->handler->disable)    \
92                         desc->handler->disable(irq);            \
93         })
94 #define unmask_irq(irq)                                         \
95         ({                                                      \
96                 irq_desc_t *desc = get_irq_desc(irq);           \
97                 if (desc->handler && desc->handler->enable)     \
98                         desc->handler->enable(irq);             \
99         })
100 #define ack_irq(irq)                                            \
101         ({                                                      \
102                 irq_desc_t *desc = get_irq_desc(irq);           \
103                 if (desc->handler && desc->handler->ack)        \
104                         desc->handler->ack(irq);                \
105         })
106
107 /* Should we handle this via lost interrupts and IPIs or should we don't care like
108  * we do now ? --BenH.
109  */
110 struct hw_interrupt_type;
111 static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}
112
113 #endif  /* __KERNEL__ */
114 #endif  /* _ASM_POWERPC_HW_IRQ_H */