]>
Commit | Line | Data |
---|---|---|
df9ee292 DH |
1 | #ifndef _M68K_IRQFLAGS_H |
2 | #define _M68K_IRQFLAGS_H | |
3 | ||
4 | #include <linux/types.h> | |
ed35f654 | 5 | #ifdef CONFIG_MMU |
df9ee292 | 6 | #include <linux/hardirq.h> |
ed35f654 | 7 | #endif |
df9ee292 DH |
8 | #include <linux/preempt.h> |
9 | #include <asm/thread_info.h> | |
10 | #include <asm/entry.h> | |
11 | ||
12 | static inline unsigned long arch_local_save_flags(void) | |
13 | { | |
14 | unsigned long flags; | |
15 | asm volatile ("movew %%sr,%0" : "=d" (flags) : : "memory"); | |
16 | return flags; | |
17 | } | |
18 | ||
19 | static inline void arch_local_irq_disable(void) | |
20 | { | |
21 | #ifdef CONFIG_COLDFIRE | |
22 | asm volatile ( | |
23 | "move %/sr,%%d0 \n\t" | |
24 | "ori.l #0x0700,%%d0 \n\t" | |
25 | "move %%d0,%/sr \n" | |
26 | : /* no outputs */ | |
27 | : | |
28 | : "cc", "%d0", "memory"); | |
29 | #else | |
30 | asm volatile ("oriw #0x0700,%%sr" : : : "memory"); | |
31 | #endif | |
32 | } | |
33 | ||
34 | static inline void arch_local_irq_enable(void) | |
35 | { | |
36 | #if defined(CONFIG_COLDFIRE) | |
37 | asm volatile ( | |
38 | "move %/sr,%%d0 \n\t" | |
39 | "andi.l #0xf8ff,%%d0 \n\t" | |
40 | "move %%d0,%/sr \n" | |
41 | : /* no outputs */ | |
42 | : | |
43 | : "cc", "%d0", "memory"); | |
44 | #else | |
45 | # if defined(CONFIG_MMU) | |
46 | if (MACH_IS_Q40 || !hardirq_count()) | |
47 | # endif | |
48 | asm volatile ( | |
49 | "andiw %0,%%sr" | |
50 | : | |
51 | : "i" (ALLOWINT) | |
52 | : "memory"); | |
53 | #endif | |
54 | } | |
55 | ||
56 | static inline unsigned long arch_local_irq_save(void) | |
57 | { | |
58 | unsigned long flags = arch_local_save_flags(); | |
59 | arch_local_irq_disable(); | |
60 | return flags; | |
61 | } | |
62 | ||
63 | static inline void arch_local_irq_restore(unsigned long flags) | |
64 | { | |
65 | asm volatile ("movew %0,%%sr" : : "d" (flags) : "memory"); | |
66 | } | |
67 | ||
68 | static inline bool arch_irqs_disabled_flags(unsigned long flags) | |
69 | { | |
70 | return (flags & ~ALLOWINT) != 0; | |
71 | } | |
72 | ||
73 | static inline bool arch_irqs_disabled(void) | |
74 | { | |
75 | return arch_irqs_disabled_flags(arch_local_save_flags()); | |
76 | } | |
77 | ||
78 | #endif /* _M68K_IRQFLAGS_H */ |