1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_SH_SUSPEND_H
3 #define _ASM_SH_SUSPEND_H
4
5 #ifndef __ASSEMBLY__
6 #include <linux/notifier.h>
7
8 #include <asm/ptrace.h>
9
10 struct swsusp_arch_regs {
11 struct pt_regs user_regs;
12 unsigned long bank1_regs[8];
13 };
14
15 void sh_mobile_call_standby(unsigned long mode);
16
17 #ifdef CONFIG_CPU_IDLE
18 int sh_mobile_setup_cpuidle(void);
19 #else
20 static inline int sh_mobile_setup_cpuidle(void) { return 0; }
21 #endif
22
23 /* notifier chains for pre/post sleep hooks */
24 extern struct atomic_notifier_head sh_mobile_pre_sleep_notifier_list;
25 extern 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
33 /* board code registration function for self-refresh assembly snippets */
34 void sh_mobile_register_self_refresh(unsigned long flags,
35 void *pre_start, void *pre_end,
36 void *post_start, void *post_end);
37
38 /* register structure for address/data information */
39 struct sh_sleep_regs {
40 unsigned long stbcr;
41 unsigned long bar;
42
43 /* MMU */
44 unsigned long pteh;
45 unsigned long ptel;
46 unsigned long ttb;
47 unsigned long tea;
48 unsigned long mmucr;
49 unsigned long ptea;
50 unsigned long pascr;
51 unsigned long irmcr;
52
53 /* Cache */
54 unsigned long ccr;
55 unsigned long ramcr;
56 };
57
58 /* data area for low-level sleep code */
59 struct sh_sleep_data {
60 /* current sleep mode (SUSP_SH_...) */
61 unsigned long mode;
62
63 /* addresses of board specific self-refresh snippets */
64 unsigned long sf_pre;
65 unsigned long sf_post;
66
67 /* address of resume code */
68 unsigned long resume;
69
70 /* register state saved and restored by the assembly code */
71 unsigned long vbr;
72 unsigned long spc;
73 unsigned long sr;
74 unsigned long sp;
75
76 /* structure for keeping register addresses */
77 struct sh_sleep_regs addr;
78
79 /* structure for saving/restoring register state */
80 struct sh_sleep_regs data;
81 };
82
83 /* a bitmap of supported sleep modes (SUSP_SH..) */
84 extern unsigned long sh_mobile_sleep_supported;
85
86 #endif
87
88 /* flags passed to assembly suspend code */
89 #define SUSP_SH_SLEEP (1 << 0) /* Regular sleep mode */
90 #define SUSP_SH_STANDBY (1 << 1) /* SH-Mobile Software standby mode */
91 #define SUSP_SH_RSTANDBY (1 << 2) /* SH-Mobile R-standby mode */
92 #define SUSP_SH_USTANDBY (1 << 3) /* SH-Mobile U-standby mode */
93 #define SUSP_SH_SF (1 << 4) /* Enable self-refresh */
94 #define SUSP_SH_MMU (1 << 5) /* Save/restore MMU and cache */
95 #define SUSP_SH_REGS (1 << 6) /* Save/restore registers */
96
97 #endif /* _ASM_SH_SUSPEND_H */
98
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