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-rw-r--r--arch/ia64/include/asm/irqflags.h94
-rw-r--r--arch/ia64/include/asm/system.h76
2 files changed, 94 insertions, 76 deletions
diff --git a/arch/ia64/include/asm/irqflags.h b/arch/ia64/include/asm/irqflags.h
new file mode 100644
index 000000000000..f82d6be2ecd2
--- /dev/null
+++ b/arch/ia64/include/asm/irqflags.h
@@ -0,0 +1,94 @@
1/*
2 * IRQ flags defines.
3 *
4 * Copyright (C) 1998-2003 Hewlett-Packard Co
5 * David Mosberger-Tang <davidm@hpl.hp.com>
6 * Copyright (C) 1999 Asit Mallick <asit.k.mallick@intel.com>
7 * Copyright (C) 1999 Don Dugger <don.dugger@intel.com>
8 */
9
10#ifndef _ASM_IA64_IRQFLAGS_H
11#define _ASM_IA64_IRQFLAGS_H
12
13#ifdef CONFIG_IA64_DEBUG_IRQ
14extern unsigned long last_cli_ip;
15static inline void arch_maybe_save_ip(unsigned long flags)
16{
17 if (flags & IA64_PSR_I)
18 last_cli_ip = ia64_getreg(_IA64_REG_IP);
19}
20#else
21#define arch_maybe_save_ip(flags) do {} while (0)
22#endif
23
24/*
25 * - clearing psr.i is implicitly serialized (visible by next insn)
26 * - setting psr.i requires data serialization
27 * - we need a stop-bit before reading PSR because we sometimes
28 * write a floating-point register right before reading the PSR
29 * and that writes to PSR.mfl
30 */
31
32static inline unsigned long arch_local_save_flags(void)
33{
34 ia64_stop();
35#ifdef CONFIG_PARAVIRT
36 return ia64_get_psr_i();
37#else
38 return ia64_getreg(_IA64_REG_PSR);
39#endif
40}
41
42static inline unsigned long arch_local_irq_save(void)
43{
44 unsigned long flags = arch_local_save_flags();
45
46 ia64_stop();
47 ia64_rsm(IA64_PSR_I);
48 arch_maybe_save_ip(flags);
49 return flags;
50}
51
52static inline void arch_local_irq_disable(void)
53{
54#ifdef CONFIG_IA64_DEBUG_IRQ
55 arch_local_irq_save();
56#else
57 ia64_stop();
58 ia64_rsm(IA64_PSR_I);
59#endif
60}
61
62static inline void arch_local_irq_enable(void)
63{
64 ia64_stop();
65 ia64_ssm(IA64_PSR_I);
66 ia64_srlz_d();
67}
68
69static inline void arch_local_irq_restore(unsigned long flags)
70{
71#ifdef CONFIG_IA64_DEBUG_IRQ
72 unsigned long old_psr = arch_local_save_flags();
73#endif
74 ia64_intrin_local_irq_restore(flags & IA64_PSR_I);
75 arch_maybe_save_ip(old_psr & ~flags);
76}
77
78static inline bool arch_irqs_disabled_flags(unsigned long flags)
79{
80 return (flags & IA64_PSR_I) == 0;
81}
82
83static inline bool arch_irqs_disabled(void)
84{
85 return arch_irqs_disabled_flags(arch_local_save_flags());
86}
87
88static inline void arch_safe_halt(void)
89{
90 ia64_pal_halt_light(); /* PAL_HALT_LIGHT */
91}
92
93
94#endif /* _ASM_IA64_IRQFLAGS_H */
diff --git a/arch/ia64/include/asm/system.h b/arch/ia64/include/asm/system.h
index 9f342a574ce8..2feb7f64c035 100644
--- a/arch/ia64/include/asm/system.h
+++ b/arch/ia64/include/asm/system.h
@@ -107,87 +107,11 @@ extern struct ia64_boot_param {
107 */ 107 */
108#define set_mb(var, value) do { (var) = (value); mb(); } while (0) 108#define set_mb(var, value) do { (var) = (value); mb(); } while (0)
109 109
110#define safe_halt() ia64_pal_halt_light() /* PAL_HALT_LIGHT */
111
112/* 110/*
113 * The group barrier in front of the rsm & ssm are necessary to ensure 111 * The group barrier in front of the rsm & ssm are necessary to ensure
114 * that none of the previous instructions in the same group are 112 * that none of the previous instructions in the same group are
115 * affected by the rsm/ssm. 113 * affected by the rsm/ssm.
116 */ 114 */
117/* For spinlocks etc */
118
119/*
120 * - clearing psr.i is implicitly serialized (visible by next insn)
121 * - setting psr.i requires data serialization
122 * - we need a stop-bit before reading PSR because we sometimes
123 * write a floating-point register right before reading the PSR
124 * and that writes to PSR.mfl
125 */
126#ifdef CONFIG_PARAVIRT
127#define __local_save_flags() ia64_get_psr_i()
128#else
129#define __local_save_flags() ia64_getreg(_IA64_REG_PSR)
130#endif
131
132#define __local_irq_save(x) \
133do { \
134 ia64_stop(); \
135 (x) = __local_save_flags(); \
136 ia64_stop(); \
137 ia64_rsm(IA64_PSR_I); \
138} while (0)
139
140#define __local_irq_disable() \
141do { \
142 ia64_stop(); \
143 ia64_rsm(IA64_PSR_I); \
144} while (0)
145
146#define __local_irq_restore(x) ia64_intrin_local_irq_restore((x) & IA64_PSR_I)
147
148#ifdef CONFIG_IA64_DEBUG_IRQ
149
150 extern unsigned long last_cli_ip;
151
152# define __save_ip() last_cli_ip = ia64_getreg(_IA64_REG_IP)
153
154# define local_irq_save(x) \
155do { \
156 unsigned long __psr; \
157 \
158 __local_irq_save(__psr); \
159 if (__psr & IA64_PSR_I) \
160 __save_ip(); \
161 (x) = __psr; \
162} while (0)
163
164# define local_irq_disable() do { unsigned long __x; local_irq_save(__x); } while (0)
165
166# define local_irq_restore(x) \
167do { \
168 unsigned long __old_psr, __psr = (x); \
169 \
170 local_save_flags(__old_psr); \
171 __local_irq_restore(__psr); \
172 if ((__old_psr & IA64_PSR_I) && !(__psr & IA64_PSR_I)) \
173 __save_ip(); \
174} while (0)
175
176#else /* !CONFIG_IA64_DEBUG_IRQ */
177# define local_irq_save(x) __local_irq_save(x)
178# define local_irq_disable() __local_irq_disable()
179# define local_irq_restore(x) __local_irq_restore(x)
180#endif /* !CONFIG_IA64_DEBUG_IRQ */
181
182#define local_irq_enable() ({ ia64_stop(); ia64_ssm(IA64_PSR_I); ia64_srlz_d(); })
183#define local_save_flags(flags) ({ ia64_stop(); (flags) = __local_save_flags(); })
184
185#define irqs_disabled() \
186({ \
187 unsigned long __ia64_id_flags; \
188 local_save_flags(__ia64_id_flags); \
189 (__ia64_id_flags & IA64_PSR_I) == 0; \
190})
191 115
192#ifdef __KERNEL__ 116#ifdef __KERNEL__
193 117
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