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-rw-r--r--arch/microblaze/include/asm/irqflags.h193
1 files changed, 102 insertions, 91 deletions
diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h
index 2c38c6d80176..5fd31905775d 100644
--- a/arch/microblaze/include/asm/irqflags.h
+++ b/arch/microblaze/include/asm/irqflags.h
@@ -9,103 +9,114 @@
9#ifndef _ASM_MICROBLAZE_IRQFLAGS_H 9#ifndef _ASM_MICROBLAZE_IRQFLAGS_H
10#define _ASM_MICROBLAZE_IRQFLAGS_H 10#define _ASM_MICROBLAZE_IRQFLAGS_H
11 11
12#include <linux/irqflags.h> 12#include <linux/types.h>
13#include <asm/registers.h> 13#include <asm/registers.h>
14 14
15# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR 15#ifdef CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR
16 16
17# define raw_local_irq_save(flags) \ 17static inline unsigned long arch_local_irq_save(void)
18 do { \ 18{
19 asm volatile (" msrclr %0, %1; \ 19 unsigned long flags;
20 nop;" \ 20 asm volatile(" msrclr %0, %1 \n"
21 : "=r"(flags) \ 21 " nop \n"
22 : "i"(MSR_IE) \ 22 : "=r"(flags)
23 : "memory"); \ 23 : "i"(MSR_IE)
24 } while (0) 24 : "memory");
25 25 return flags;
26# define raw_local_irq_disable() \ 26}
27 do { \ 27
28 asm volatile (" msrclr r0, %0; \ 28static inline void arch_local_irq_disable(void)
29 nop;" \ 29{
30 : \ 30 /* this uses r0 without declaring it - is that correct? */
31 : "i"(MSR_IE) \ 31 asm volatile(" msrclr r0, %0 \n"
32 : "memory"); \ 32 " nop \n"
33 } while (0) 33 :
34 34 : "i"(MSR_IE)
35# define raw_local_irq_enable() \ 35 : "memory");
36 do { \ 36}
37 asm volatile (" msrset r0, %0; \ 37
38 nop;" \ 38static inline void arch_local_irq_enable(void)
39 : \ 39{
40 : "i"(MSR_IE) \ 40 /* this uses r0 without declaring it - is that correct? */
41 : "memory"); \ 41 asm volatile(" msrset r0, %0 \n"
42 } while (0) 42 " nop \n"
43 43 :
44# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */ 44 : "i"(MSR_IE)
45 45 : "memory");
46# define raw_local_irq_save(flags) \ 46}
47 do { \ 47
48 register unsigned tmp; \ 48#else /* !CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
49 asm volatile (" mfs %0, rmsr; \ 49
50 nop; \ 50static inline unsigned long arch_local_irq_save(void)
51 andi %1, %0, %2; \ 51{
52 mts rmsr, %1; \ 52 unsigned long flags, tmp;
53 nop;" \ 53 asm volatile (" mfs %0, rmsr \n"
54 : "=r"(flags), "=r" (tmp) \ 54 " nop \n"
55 : "i"(~MSR_IE) \ 55 " andi %1, %0, %2 \n"
56 : "memory"); \ 56 " mts rmsr, %1 \n"
57 } while (0) 57 " nop \n"
58 58 : "=r"(flags), "=r"(tmp)
59# define raw_local_irq_disable() \ 59 : "i"(~MSR_IE)
60 do { \ 60 : "memory");
61 register unsigned tmp; \ 61 return flags;
62 asm volatile (" mfs %0, rmsr; \ 62}
63 nop; \ 63
64 andi %0, %0, %1; \ 64static inline void arch_local_irq_disable(void)
65 mts rmsr, %0; \ 65{
66 nop;" \ 66 unsigned long tmp;
67 : "=r"(tmp) \ 67 asm volatile(" mfs %0, rmsr \n"
68 : "i"(~MSR_IE) \ 68 " nop \n"
69 : "memory"); \ 69 " andi %0, %0, %1 \n"
70 } while (0) 70 " mts rmsr, %0 \n"
71 71 " nop \n"
72# define raw_local_irq_enable() \ 72 : "=r"(tmp)
73 do { \ 73 : "i"(~MSR_IE)
74 register unsigned tmp; \ 74 : "memory");
75 asm volatile (" mfs %0, rmsr; \ 75}
76 nop; \ 76
77 ori %0, %0, %1; \ 77static inline void arch_local_irq_enable(void)
78 mts rmsr, %0; \ 78{
79 nop;" \ 79 unsigned long tmp;
80 : "=r"(tmp) \ 80 asm volatile(" mfs %0, rmsr \n"
81 : "i"(MSR_IE) \ 81 " nop \n"
82 : "memory"); \ 82 " ori %0, %0, %1 \n"
83 } while (0) 83 " mts rmsr, %0 \n"
84 84 " nop \n"
85# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ 85 : "=r"(tmp)
86 86 : "i"(MSR_IE)
87#define raw_local_irq_restore(flags) \ 87 : "memory");
88 do { \ 88}
89 asm volatile (" mts rmsr, %0; \ 89
90 nop;" \ 90#endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */
91 : \ 91
92 : "r"(flags) \ 92static inline unsigned long arch_local_save_flags(void)
93 : "memory"); \
94 } while (0)
95
96static inline unsigned long get_msr(void)
97{ 93{
98 unsigned long flags; 94 unsigned long flags;
99 asm volatile (" mfs %0, rmsr; \ 95 asm volatile(" mfs %0, rmsr \n"
100 nop;" \ 96 " nop \n"
101 : "=r"(flags) \ 97 : "=r"(flags)
102 : \ 98 :
103 : "memory"); \ 99 : "memory");
104 return flags; 100 return flags;
105} 101}
106 102
107#define raw_local_save_flags(flags) ((flags) = get_msr()) 103static inline void arch_local_irq_restore(unsigned long flags)
108#define raw_irqs_disabled() ((get_msr() & MSR_IE) == 0) 104{
109#define raw_irqs_disabled_flags(flags) ((flags & MSR_IE) == 0) 105 asm volatile(" mts rmsr, %0 \n"
106 " nop \n"
107 :
108 : "r"(flags)
109 : "memory");
110}
111
112static inline bool arch_irqs_disabled_flags(unsigned long flags)
113{
114 return (flags & MSR_IE) == 0;
115}
116
117static inline bool arch_irqs_disabled(void)
118{
119 return arch_irqs_disabled_flags(arch_local_save_flags());
120}
110 121
111#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */ 122#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-27 21:43:51 -0500