Fix IRQ flag handling naming
[linux-2.6/cjktty.git] / arch / sparc / include / asm / irqflags_64.h
blobaab969c82c2b654391089b180d77d45e62416058
1 /*
2 * include/asm/irqflags.h
4 * IRQ flags handling
6 * This file gets included from lowlevel asm headers too, to provide
7 * wrapped versions of the local_irq_*() APIs, based on the
8 * arch_local_irq_*() functions from the lowlevel headers.
9 */
10 #ifndef _ASM_IRQFLAGS_H
11 #define _ASM_IRQFLAGS_H
13 #include <asm/pil.h>
15 #ifndef __ASSEMBLY__
17 static inline unsigned long arch_local_save_flags(void)
19 unsigned long flags;
21 __asm__ __volatile__(
22 "rdpr %%pil, %0"
23 : "=r" (flags)
26 return flags;
29 static inline void arch_local_irq_restore(unsigned long flags)
31 __asm__ __volatile__(
32 "wrpr %0, %%pil"
33 : /* no output */
34 : "r" (flags)
35 : "memory"
39 static inline void arch_local_irq_disable(void)
41 __asm__ __volatile__(
42 "wrpr %0, %%pil"
43 : /* no outputs */
44 : "i" (PIL_NORMAL_MAX)
45 : "memory"
49 static inline void arch_local_irq_enable(void)
51 __asm__ __volatile__(
52 "wrpr 0, %%pil"
53 : /* no outputs */
54 : /* no inputs */
55 : "memory"
59 static inline int arch_irqs_disabled_flags(unsigned long flags)
61 return (flags > 0);
64 static inline int arch_irqs_disabled(void)
66 return arch_irqs_disabled_flags(arch_local_save_flags());
69 static inline unsigned long arch_local_irq_save(void)
71 unsigned long flags, tmp;
73 /* Disable interrupts to PIL_NORMAL_MAX unless we already
74 * are using PIL_NMI, in which case PIL_NMI is retained.
76 * The only values we ever program into the %pil are 0,
77 * PIL_NORMAL_MAX and PIL_NMI.
79 * Since PIL_NMI is the largest %pil value and all bits are
80 * set in it (0xf), it doesn't matter what PIL_NORMAL_MAX
81 * actually is.
83 __asm__ __volatile__(
84 "rdpr %%pil, %0\n\t"
85 "or %0, %2, %1\n\t"
86 "wrpr %1, 0x0, %%pil"
87 : "=r" (flags), "=r" (tmp)
88 : "i" (PIL_NORMAL_MAX)
89 : "memory"
92 return flags;
95 #endif /* (__ASSEMBLY__) */
97 #endif /* !(_ASM_IRQFLAGS_H) */