summaryrefslogtreecommitdiffstats
path: root/include/asm-ppc/machdep.h
blob: 2723b423f6757be06a7fbf55c5612fc52926142a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
#ifdef __KERNEL__
#ifndef _PPC_MACHDEP_H
#define _PPC_MACHDEP_H

#include <linux/config.h>
#include <linux/init.h>
#include <linux/kexec.h>

#include <asm/setup.h>
#include <asm/page.h>

#ifdef CONFIG_APUS
#include <asm-m68k/machdep.h>
#endif

struct pt_regs;
struct pci_bus;	
struct pci_dev;
struct seq_file;
struct file;

/* We export this macro for external modules like Alsa to know if
 * ppc_md.feature_call is implemented or not
 */
#define CONFIG_PPC_HAS_FEATURE_CALLS

struct machdep_calls {
	void		(*setup_arch)(void);
	/* Optional, may be NULL. */
	int		(*show_cpuinfo)(struct seq_file *m);
	int		(*show_percpuinfo)(struct seq_file *m, int i);
	/* Optional, may be NULL. */
	unsigned int	(*irq_canonicalize)(unsigned int irq);
	void		(*init_IRQ)(void);
	int		(*get_irq)(struct pt_regs *);
	
	/* A general init function, called by ppc_init in init/main.c.
	   May be NULL. DEPRECATED ! */
	void		(*init)(void);
	/* For compatibility with merged platforms */
	void		(*init_early)(void);

	void		(*restart)(char *cmd);
	void		(*power_off)(void);
	void		(*halt)(void);

	void		(*idle_loop)(void);
	void		(*power_save)(void);

	long		(*time_init)(void); /* Optional, may be NULL */
	int		(*set_rtc_time)(unsigned long nowtime);
	unsigned long	(*get_rtc_time)(void);
	unsigned char 	(*rtc_read_val)(int addr);
	void		(*rtc_write_val)(int addr, unsigned char val);
	void		(*calibrate_decr)(void);

	void		(*heartbeat)(void);
	unsigned long	heartbeat_reset;
	unsigned long	heartbeat_count;

	unsigned long	(*find_end_of_memory)(void);
	void		(*setup_io_mappings)(void);

	void		(*early_serial_map)(void);
  	void		(*progress)(char *, unsigned short);
	void		(*kgdb_map_scc)(void);

	unsigned char 	(*nvram_read_val)(int addr);
	void		(*nvram_write_val)(int addr, unsigned char val);
	void		(*nvram_sync)(void);

	/*
	 * optional PCI "hooks"
	 */

	/* Called after scanning the bus, before allocating resources */
	void (*pcibios_fixup)(void);

	/* Called after PPC generic resource fixup to perform
	   machine specific fixups */
	void (*pcibios_fixup_resources)(struct pci_dev *);

	/* Called for each PCI bus in the system when it's probed */
	void (*pcibios_fixup_bus)(struct pci_bus *);

	/* Called when pci_enable_device() is called (initial=0) or
	 * when a device with no assigned resource is found (initial=1).
	 * Returns 0 to allow assignment/enabling of the device. */
	int  (*pcibios_enable_device_hook)(struct pci_dev *, int initial);

	/* For interrupt routing */
	unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
	int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);

	/* Called in indirect_* to avoid touching devices */
	int (*pci_exclude_device)(unsigned char, unsigned char);

	/* Called at then very end of pcibios_init() */
	void (*pcibios_after_init)(void);

	/* Get access protection for /dev/mem */
	pgprot_t	(*phys_mem_access_prot)(struct file *file,
						unsigned long pfn,
						unsigned long size,
						pgprot_t vma_prot);

	/* Motherboard/chipset features. This is a kind of general purpose
	 * hook used to control some machine specific features (like reset
	 * lines, chip power control, etc...).
	 */
	long (*feature_call)(unsigned int feature, ...);

#ifdef CONFIG_SMP
	/* functions for dealing with other cpus */
	struct smp_ops_t *smp_ops;
#endif /* CONFIG_SMP */

#ifdef CONFIG_KEXEC
	/* Called to shutdown machine specific hardware not already controlled
	 * by other drivers.
	 * XXX Should we move this one out of kexec scope?
	 */
	void (*machine_shutdown)(void);

	/* Called to do the minimal shutdown needed to run a kexec'd kernel
	 * to run successfully.
	 * XXX Should we move this one out of kexec scope?
	 */
	void (*machine_crash_shutdown)(void);

	/* Called to do what every setup is needed on image and the
	 * reboot code buffer. Returns 0 on success.
	 * Provide your own (maybe dummy) implementation if your platform
	 * claims to support kexec.
	 */
	int (*machine_kexec_prepare)(struct kimage *image);

	/* Called to handle any machine specific cleanup on image */
	void (*machine_kexec_cleanup)(struct kimage *image);

	/* Called to perform the _real_ kexec.
	 * Do NOT allocate memory or fail here. We are past the point of
	 * no return.
	 */
	void (*machine_kexec)(struct kimage *image);
#endif /* CONFIG_KEXEC */
};

extern struct machdep_calls ppc_md;
extern char cmd_line[COMMAND_LINE_SIZE];

extern void setup_pci_ptrs(void);

#ifdef CONFIG_SMP
struct smp_ops_t {
	void  (*message_pass)(int target, int msg);
	int   (*probe)(void);
	void  (*kick_cpu)(int nr);
	void  (*setup_cpu)(int nr);
	void  (*space_timers)(int nr);
	void  (*take_timebase)(void);
	void  (*give_timebase)(void);
};

/* Poor default implementations */
extern void __devinit smp_generic_give_timebase(void);
extern void __devinit smp_generic_take_timebase(void);
#endif /* CONFIG_SMP */

#endif /* _PPC_MACHDEP_H */
#endif /* __KERNEL__ */
OpenPOWER on IntegriCloud