machdep.h
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#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)(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);
/* this is for modules, since _machine can be a define -- Cort */
int ppc_machine;
/* 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__ */