sh: Add MMU and Cache handling sleep mode code
[linux-2.6-block.git] / arch / sh / include / asm / suspend.h
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1#ifndef _ASM_SH_SUSPEND_H
2#define _ASM_SH_SUSPEND_H
3
77594912 4#ifndef __ASSEMBLY__
49f42644 5#include <linux/notifier.h>
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6static inline int arch_prepare_suspend(void) { return 0; }
7
8#include <asm/ptrace.h>
9
10struct swsusp_arch_regs {
11 struct pt_regs user_regs;
12 unsigned long bank1_regs[8];
13};
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14
15void sh_mobile_call_standby(unsigned long mode);
16
17#ifdef CONFIG_CPU_IDLE
18void sh_mobile_setup_cpuidle(void);
19#else
20static inline void sh_mobile_setup_cpuidle(void) {}
21#endif
22
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23/* notifier chains for pre/post sleep hooks */
24extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
25extern struct atomic_notifier_head sh_mobile_post_sleep_notifier_list;
26
27/* priority levels for notifiers */
28#define SH_MOBILE_SLEEP_BOARD 0
29#define SH_MOBILE_SLEEP_CPU 1
30#define SH_MOBILE_PRE(x) (x)
31#define SH_MOBILE_POST(x) (-(x))
32
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33/* board code registration function for self-refresh assembly snippets */
34void sh_mobile_register_self_refresh(unsigned long flags,
35 void *pre_start, void *pre_end,
36 void *post_start, void *post_end);
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37
38/* register structure for address/data information */
39struct sh_sleep_regs {
40 unsigned long stbcr;
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41
42 /* MMU */
43 unsigned long pteh;
44 unsigned long ptel;
45 unsigned long ttb;
46 unsigned long tea;
47 unsigned long mmucr;
48 unsigned long ptea;
49 unsigned long pascr;
50 unsigned long irmcr;
51
52 /* Cache */
53 unsigned long ccr;
54 unsigned long ramcr;
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55};
56
57/* data area for low-level sleep code */
58struct sh_sleep_data {
59 /* current sleep mode (SUSP_SH_...) */
60 unsigned long mode;
61
62 /* addresses of board specific self-refresh snippets */
63 unsigned long sf_pre;
64 unsigned long sf_post;
65
66 /* register state saved and restored by the assembly code */
67 unsigned long vbr;
68 unsigned long spc;
69 unsigned long sr;
70
71 /* structure for keeping register addresses */
72 struct sh_sleep_regs addr;
73
74 /* structure for saving/restoring register state */
75 struct sh_sleep_regs data;
76};
77
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78/* a bitmap of supported sleep modes (SUSP_SH..) */
79extern unsigned long sh_mobile_sleep_supported;
80
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81#endif
82
83/* flags passed to assembly suspend code */
84#define SUSP_SH_SLEEP (1 << 0) /* Regular sleep mode */
85#define SUSP_SH_STANDBY (1 << 1) /* SH-Mobile Software standby mode */
86#define SUSP_SH_RSTANDBY (1 << 2) /* SH-Mobile R-standby mode */
87#define SUSP_SH_USTANDBY (1 << 3) /* SH-Mobile U-standby mode */
88#define SUSP_SH_SF (1 << 4) /* Enable self-refresh */
99675a7a 89#define SUSP_SH_MMU (1 << 5) /* Save/restore MMU and cache */
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90
91#endif /* _ASM_SH_SUSPEND_H */