tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifdef __KERNEL__
2#ifndef _PPC_MACHDEP_H
3#define _PPC_MACHDEP_H
4
5#include <linux/config.h>
6#include <linux/init.h>
7#include <linux/kexec.h>
8
9#include <asm/setup.h>
10#include <asm/page.h>
11
12#ifdef CONFIG_APUS
13#include <asm-m68k/machdep.h>
14#endif
15
16struct pt_regs;
17struct pci_bus;
18struct pci_dev;
19struct seq_file;
20struct file;
21
22/* We export this macro for external modules like Alsa to know if
23 * ppc_md.feature_call is implemented or not
24 */
25#define CONFIG_PPC_HAS_FEATURE_CALLS
26
27struct machdep_calls {
28 void (*setup_arch)(void);
29 /* Optional, may be NULL. */
30 int (*show_cpuinfo)(struct seq_file *m);
31 int (*show_percpuinfo)(struct seq_file *m, int i);
32 /* Optional, may be NULL. */
33 unsigned int (*irq_canonicalize)(unsigned int irq);
34 void (*init_IRQ)(void);
35 int (*get_irq)(struct pt_regs *);
36
37 /* A general init function, called by ppc_init in init/main.c.
38 May be NULL. */
39 void (*init)(void);
40
41 void (*restart)(char *cmd);
42 void (*power_off)(void);
43 void (*halt)(void);
44
45 void (*idle)(void);
46 void (*power_save)(void);
47
48 long (*time_init)(void); /* Optional, may be NULL */
49 int (*set_rtc_time)(unsigned long nowtime);
50 unsigned long (*get_rtc_time)(void);
51 unsigned char (*rtc_read_val)(int addr);
52 void (*rtc_write_val)(int addr, unsigned char val);
53 void (*calibrate_decr)(void);
54
55 void (*heartbeat)(void);
56 unsigned long heartbeat_reset;
57 unsigned long heartbeat_count;
58
59 unsigned long (*find_end_of_memory)(void);
60 void (*setup_io_mappings)(void);
61
62 void (*early_serial_map)(void);
63 void (*progress)(char *, unsigned short);
64 void (*kgdb_map_scc)(void);
65
66 unsigned char (*nvram_read_val)(int addr);
67 void (*nvram_write_val)(int addr, unsigned char val);
68 void (*nvram_sync)(void);
69
70 /*
71 * optional PCI "hooks"
72 */
73
74 /* Called after scanning the bus, before allocating resources */
75 void (*pcibios_fixup)(void);
76
77 /* Called after PPC generic resource fixup to perform
78 machine specific fixups */
79 void (*pcibios_fixup_resources)(struct pci_dev *);
80
81 /* Called for each PCI bus in the system when it's probed */
82 void (*pcibios_fixup_bus)(struct pci_bus *);
83
84 /* Called when pci_enable_device() is called (initial=0) or
85 * when a device with no assigned resource is found (initial=1).
86 * Returns 0 to allow assignment/enabling of the device. */
87 int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
88
89 /* For interrupt routing */
90 unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
91 int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
92
93 /* Called in indirect_* to avoid touching devices */
94 int (*pci_exclude_device)(unsigned char, unsigned char);
95
96 /* Called at then very end of pcibios_init() */
97 void (*pcibios_after_init)(void);
98
99 /* Get access protection for /dev/mem */
100 pgprot_t (*phys_mem_access_prot)(struct file *file,
101 unsigned long offset,
102 unsigned long size,
103 pgprot_t vma_prot);
104
105 /* this is for modules, since _machine can be a define -- Cort */
106 int ppc_machine;
107
108 /* Motherboard/chipset features. This is a kind of general purpose
109 * hook used to control some machine specific features (like reset
110 * lines, chip power control, etc...).
111 */
112 long (*feature_call)(unsigned int feature, ...);
113
114#ifdef CONFIG_SMP
115 /* functions for dealing with other cpus */
116 struct smp_ops_t *smp_ops;
117#endif /* CONFIG_SMP */
118
119#ifdef CONFIG_KEXEC
120 /* Called to shutdown machine specific hardware not already controlled
121 * by other drivers.
122 * XXX Should we move this one out of kexec scope?
123 */
124 void (*machine_shutdown)(void);
125
126 /* Called to do the minimal shutdown needed to run a kexec'd kernel
127 * to run successfully.
128 * XXX Should we move this one out of kexec scope?
129 */
130 void (*machine_crash_shutdown)(void);
131
132 /* Called to do what every setup is needed on image and the
133 * reboot code buffer. Returns 0 on success.
134 * Provide your own (maybe dummy) implementation if your platform
135 * claims to support kexec.
136 */
137 int (*machine_kexec_prepare)(struct kimage *image);
138
139 /* Called to handle any machine specific cleanup on image */
140 void (*machine_kexec_cleanup)(struct kimage *image);
141
142 /* Called to perform the _real_ kexec.
143 * Do NOT allocate memory or fail here. We are past the point of
144 * no return.
145 */
146 void (*machine_kexec)(struct kimage *image);
147#endif /* CONFIG_KEXEC */
148};
149
150extern struct machdep_calls ppc_md;
151extern char cmd_line[COMMAND_LINE_SIZE];
152
153extern void setup_pci_ptrs(void);
154
155/*
156 * Power macintoshes have either a CUDA or a PMU controlling
157 * system reset, power, NVRAM, RTC.
158 */
159typedef enum sys_ctrler_kind {
160 SYS_CTRLER_UNKNOWN = 0,
161 SYS_CTRLER_CUDA = 1,
162 SYS_CTRLER_PMU = 2,
163 SYS_CTRLER_SMU = 3,
164} sys_ctrler_t;
165
166extern sys_ctrler_t sys_ctrler;
167
168#ifdef CONFIG_SMP
169struct smp_ops_t {
170 void (*message_pass)(int target, int msg, unsigned long data, int wait);
171 int (*probe)(void);
172 void (*kick_cpu)(int nr);
173 void (*setup_cpu)(int nr);
174 void (*space_timers)(int nr);
175 void (*take_timebase)(void);
176 void (*give_timebase)(void);
177};
178
179/* Poor default implementations */
180extern void __devinit smp_generic_give_timebase(void);
181extern void __devinit smp_generic_take_timebase(void);
182#endif /* CONFIG_SMP */
183
184#endif /* _PPC_MACHDEP_H */
185#endif /* __KERNEL__ */