1#ifdef __KERNEL__
2#ifndef _PPC_MACHDEP_H
3#define _PPC_MACHDEP_H
4
5#include <linux/init.h>
6#include <linux/kexec.h>
7
8#include <asm/setup.h>
9#include <asm/page.h>
10
11#ifdef CONFIG_APUS
12#include <asm-m68k/machdep.h>
13#endif
14
15struct pt_regs;
16struct pci_bus;
17struct pci_dev;
18struct seq_file;
19struct file;
20
21/*
22 * This is for compatibility with ARCH=powerpc.
23 */
24#define machine_is(x)	__MACHINE_IS_##x
25#define __MACHINE_IS_powermac	0
26#define __MACHINE_IS_chrp	0
27#ifdef CONFIG_PPC_PREP
28#define __MACHINE_IS_prep	1
29#else
30#define __MACHINE_IS_prep	0
31#endif
32
33/* We export this macro for external modules like Alsa to know if
34 * ppc_md.feature_call is implemented or not
35 */
36#define CONFIG_PPC_HAS_FEATURE_CALLS
37
38struct machdep_calls {
39	void		(*setup_arch)(void);
40	/* Optional, may be NULL. */
41	int		(*show_cpuinfo)(struct seq_file *m);
42	int		(*show_percpuinfo)(struct seq_file *m, int i);
43	/* Optional, may be NULL. */
44	unsigned int	(*irq_canonicalize)(unsigned int irq);
45	void		(*init_IRQ)(void);
46	int		(*get_irq)(void);
47
48	/* A general init function, called by ppc_init in init/main.c.
49	   May be NULL. DEPRECATED ! */
50	void		(*init)(void);
51	/* For compatibility with merged platforms */
52	void		(*init_early)(void);
53
54	void		(*restart)(char *cmd);
55	void		(*power_off)(void);
56	void		(*halt)(void);
57
58	void		(*idle_loop)(void);
59	void		(*power_save)(void);
60
61	long		(*time_init)(void); /* Optional, may be NULL */
62	int		(*set_rtc_time)(unsigned long nowtime);
63	unsigned long	(*get_rtc_time)(void);
64	unsigned char 	(*rtc_read_val)(int addr);
65	void		(*rtc_write_val)(int addr, unsigned char val);
66	void		(*calibrate_decr)(void);
67
68	void		(*heartbeat)(void);
69	unsigned long	heartbeat_reset;
70	unsigned long	heartbeat_count;
71
72	unsigned long	(*find_end_of_memory)(void);
73	void		(*setup_io_mappings)(void);
74
75	void		(*early_serial_map)(void);
76  	void		(*progress)(char *, unsigned short);
77	void		(*kgdb_map_scc)(void);
78
79	unsigned char 	(*nvram_read_val)(int addr);
80	void		(*nvram_write_val)(int addr, unsigned char val);
81	void		(*nvram_sync)(void);
82
83	/*
84	 * optional PCI "hooks"
85	 */
86
87	/* Called after scanning the bus, before allocating resources */
88	void (*pcibios_fixup)(void);
89
90	/* Called after PPC generic resource fixup to perform
91	   machine specific fixups */
92	void (*pcibios_fixup_resources)(struct pci_dev *);
93
94	/* Called for each PCI bus in the system when it's probed */
95	void (*pcibios_fixup_bus)(struct pci_bus *);
96
97	/* Called when pci_enable_device() is called (initial=0) or
98	 * when a device with no assigned resource is found (initial=1).
99	 * Returns 0 to allow assignment/enabling of the device. */
100	int  (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
101
102	/* For interrupt routing */
103	unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
104	int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
105
106	/* Called in indirect_* to avoid touching devices */
107	int (*pci_exclude_device)(unsigned char, unsigned char);
108
109	/* Called at then very end of pcibios_init() */
110	void (*pcibios_after_init)(void);
111
112	/* Get access protection for /dev/mem */
113	pgprot_t	(*phys_mem_access_prot)(struct file *file,
114						unsigned long pfn,
115						unsigned long size,
116						pgprot_t vma_prot);
117
118	/* Motherboard/chipset features. This is a kind of general purpose
119	 * hook used to control some machine specific features (like reset
120	 * lines, chip power control, etc...).
121	 */
122	long (*feature_call)(unsigned int feature, ...);
123
124#ifdef CONFIG_SMP
125	/* functions for dealing with other cpus */
126	struct smp_ops_t *smp_ops;
127#endif /* CONFIG_SMP */
128
129#ifdef CONFIG_KEXEC
130	void (*machine_shutdown)(void);
131
132	void (*machine_crash_shutdown)(void);
133
134	/* Called to do what every setup is needed on image and the
135	 * reboot code buffer. Returns 0 on success.
136	 * Provide your own (maybe dummy) implementation if your platform
137	 * claims to support kexec.
138	 */
139	int (*machine_kexec_prepare)(struct kimage *image);
140
141	/* Called to handle any machine specific cleanup on image */
142	void (*machine_kexec_cleanup)(struct kimage *image);
143
144	/* Called to perform the _real_ kexec.
145	 * Do NOT allocate memory or fail here. We are past the point of
146	 * no return.
147	 */
148	void (*machine_kexec)(struct kimage *image);
149#endif /* CONFIG_KEXEC */
150};
151
152extern struct machdep_calls ppc_md;
153extern char cmd_line[COMMAND_LINE_SIZE];
154
155extern void setup_pci_ptrs(void);
156
157#ifdef CONFIG_SMP
158struct smp_ops_t {
159	void  (*message_pass)(int target, int msg);
160	int   (*probe)(void);
161	void  (*kick_cpu)(int nr);
162	void  (*setup_cpu)(int nr);
163	void  (*space_timers)(int nr);
164	void  (*take_timebase)(void);
165	void  (*give_timebase)(void);
166};
167
168/* Poor default implementations */
169extern void __devinit smp_generic_give_timebase(void);
170extern void __devinit smp_generic_take_timebase(void);
171#endif /* CONFIG_SMP */
172
173#endif /* _PPC_MACHDEP_H */
174#endif /* __KERNEL__ */
175