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authorPaul Mundt <lethal@linux-sh.org>2007-11-10 05:46:31 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:42 -0500
commita62a3861e0adfd2612372883b5b1fc05a5182796 (patch)
treed3ff2c41f2a059173c8959f006bef770de528a0b /include/asm-sh64
parent36bcd39dbca824daffe16d607ae574b6edc7d31a (diff)
sh: Split out system.h in to _32 and _64 variants.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh64')
-rw-r--r--include/asm-sh64/system.h190
1 files changed, 0 insertions, 190 deletions
diff --git a/include/asm-sh64/system.h b/include/asm-sh64/system.h
deleted file mode 100644
index be2a15ffcc55..000000000000
--- a/include/asm-sh64/system.h
+++ /dev/null
@@ -1,190 +0,0 @@
1#ifndef __ASM_SH64_SYSTEM_H
2#define __ASM_SH64_SYSTEM_H
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * include/asm-sh64/system.h
10 *
11 * Copyright (C) 2000, 2001 Paolo Alberelli
12 * Copyright (C) 2003 Paul Mundt
13 * Copyright (C) 2004 Richard Curnow
14 *
15 */
16
17#include <asm/registers.h>
18#include <asm/processor.h>
19
20/*
21 * switch_to() should switch tasks to task nr n, first
22 */
23
24typedef struct {
25 unsigned long seg;
26} mm_segment_t;
27
28extern struct task_struct *sh64_switch_to(struct task_struct *prev,
29 struct thread_struct *prev_thread,
30 struct task_struct *next,
31 struct thread_struct *next_thread);
32
33#define switch_to(prev,next,last) \
34 do {\
35 if (last_task_used_math != next) {\
36 struct pt_regs *regs = next->thread.uregs;\
37 if (regs) regs->sr |= SR_FD;\
38 }\
39 last = sh64_switch_to(prev, &prev->thread, next, &next->thread);\
40 } while(0)
41
42#define nop() __asm__ __volatile__ ("nop")
43
44#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
45
46extern void __xchg_called_with_bad_pointer(void);
47
48#define mb() __asm__ __volatile__ ("synco": : :"memory")
49#define rmb() mb()
50#define wmb() __asm__ __volatile__ ("synco": : :"memory")
51#define read_barrier_depends() do { } while (0)
52
53#ifdef CONFIG_SMP
54#define smp_mb() mb()
55#define smp_rmb() rmb()
56#define smp_wmb() wmb()
57#define smp_read_barrier_depends() read_barrier_depends()
58#else
59#define smp_mb() barrier()
60#define smp_rmb() barrier()
61#define smp_wmb() barrier()
62#define smp_read_barrier_depends() do { } while (0)
63#endif /* CONFIG_SMP */
64
65#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
66
67/* Interrupt Control */
68#ifndef HARD_CLI
69#define SR_MASK_L 0x000000f0L
70#define SR_MASK_LL 0x00000000000000f0LL
71#else
72#define SR_MASK_L 0x10000000L
73#define SR_MASK_LL 0x0000000010000000LL
74#endif
75
76static __inline__ void local_irq_enable(void)
77{
78 /* cli/sti based on SR.BL */
79 unsigned long long __dummy0, __dummy1=~SR_MASK_LL;
80
81 __asm__ __volatile__("getcon " __SR ", %0\n\t"
82 "and %0, %1, %0\n\t"
83 "putcon %0, " __SR "\n\t"
84 : "=&r" (__dummy0)
85 : "r" (__dummy1));
86}
87
88static __inline__ void local_irq_disable(void)
89{
90 /* cli/sti based on SR.BL */
91 unsigned long long __dummy0, __dummy1=SR_MASK_LL;
92 __asm__ __volatile__("getcon " __SR ", %0\n\t"
93 "or %0, %1, %0\n\t"
94 "putcon %0, " __SR "\n\t"
95 : "=&r" (__dummy0)
96 : "r" (__dummy1));
97}
98
99#define local_save_flags(x) \
100(__extension__ ({ unsigned long long __dummy=SR_MASK_LL; \
101 __asm__ __volatile__( \
102 "getcon " __SR ", %0\n\t" \
103 "and %0, %1, %0" \
104 : "=&r" (x) \
105 : "r" (__dummy));}))
106
107#define local_irq_save(x) \
108(__extension__ ({ unsigned long long __d2=SR_MASK_LL, __d1; \
109 __asm__ __volatile__( \
110 "getcon " __SR ", %1\n\t" \
111 "or %1, r63, %0\n\t" \
112 "or %1, %2, %1\n\t" \
113 "putcon %1, " __SR "\n\t" \
114 "and %0, %2, %0" \
115 : "=&r" (x), "=&r" (__d1) \
116 : "r" (__d2));}));
117
118#define local_irq_restore(x) do { \
119 if ( ((x) & SR_MASK_L) == 0 ) /* dropping to 0 ? */ \
120 local_irq_enable(); /* yes...re-enable */ \
121} while (0)
122
123#define irqs_disabled() \
124({ \
125 unsigned long flags; \
126 local_save_flags(flags); \
127 (flags != 0); \
128})
129
130static inline unsigned long xchg_u32(volatile int * m, unsigned long val)
131{
132 unsigned long flags, retval;
133
134 local_irq_save(flags);
135 retval = *m;
136 *m = val;
137 local_irq_restore(flags);
138 return retval;
139}
140
141static inline unsigned long xchg_u8(volatile unsigned char * m, unsigned long val)
142{
143 unsigned long flags, retval;
144
145 local_irq_save(flags);
146 retval = *m;
147 *m = val & 0xff;
148 local_irq_restore(flags);
149 return retval;
150}
151
152static __inline__ unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
153{
154 switch (size) {
155 case 4:
156 return xchg_u32(ptr, x);
157 break;
158 case 1:
159 return xchg_u8(ptr, x);
160 break;
161 }
162 __xchg_called_with_bad_pointer();
163 return x;
164}
165
166/* XXX
167 * disable hlt during certain critical i/o operations
168 */
169#define HAVE_DISABLE_HLT
170void disable_hlt(void);
171void enable_hlt(void);
172
173
174#define smp_mb() barrier()
175#define smp_rmb() barrier()
176#define smp_wmb() barrier()
177
178#ifdef CONFIG_SH_ALPHANUMERIC
179/* This is only used for debugging. */
180extern void print_seg(char *file,int line);
181#define PLS() print_seg(__FILE__,__LINE__)
182#else /* CONFIG_SH_ALPHANUMERIC */
183#define PLS()
184#endif /* CONFIG_SH_ALPHANUMERIC */
185
186#define PL() printk("@ <%s,%s:%d>\n",__FILE__,__FUNCTION__,__LINE__)
187
188#define arch_align_stack(x) (x)
189
190#endif /* __ASM_SH64_SYSTEM_H */
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