include/asm-ppc/machdep.h

   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
  16 struct pt_regs;
  17 struct pci_bus;
  18 struct pci_dev;
  19 struct seq_file;
  20 struct 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
  27 struct 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. DEPRECATED ! */
  39         void            (*init)(void);
  40         /* For compatibility with merged platforms */
  41         void            (*init_early)(void);
  42
  43         void            (*restart)(char *cmd);
  44         void            (*power_off)(void);
  45         void            (*halt)(void);
  46
  47         void            (*idle_loop)(void);
  48         void            (*power_save)(void);
  49
  50         long            (*time_init)(void); /* Optional, may be NULL */
  51         int             (*set_rtc_time)(unsigned long nowtime);
  52         unsigned long   (*get_rtc_time)(void);
  53         unsigned char   (*rtc_read_val)(int addr);
  54         void            (*rtc_write_val)(int addr, unsigned char val);
  55         void            (*calibrate_decr)(void);
  56
  57         void            (*heartbeat)(void);
  58         unsigned long   heartbeat_reset;
  59         unsigned long   heartbeat_count;
  60
  61         unsigned long   (*find_end_of_memory)(void);
  62         void            (*setup_io_mappings)(void);
  63
  64         void            (*early_serial_map)(void);
  65         void            (*progress)(char *, unsigned short);
  66         void            (*kgdb_map_scc)(void);
  67
  68         unsigned char   (*nvram_read_val)(int addr);
  69         void            (*nvram_write_val)(int addr, unsigned char val);
  70         void            (*nvram_sync)(void);
  71
  72         /*
  73          * optional PCI "hooks"
  74          */
  75
  76         /* Called after scanning the bus, before allocating resources */
  77         void (*pcibios_fixup)(void);
  78
  79         /* Called after PPC generic resource fixup to perform
  80            machine specific fixups */
  81         void (*pcibios_fixup_resources)(struct pci_dev *);
  82
  83         /* Called for each PCI bus in the system when it's probed */
  84         void (*pcibios_fixup_bus)(struct pci_bus *);
  85
  86         /* Called when pci_enable_device() is called (initial=0) or
  87          * when a device with no assigned resource is found (initial=1).
  88          * Returns 0 to allow assignment/enabling of the device. */
  89         int  (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
  90
  91         /* For interrupt routing */
  92         unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
  93         int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
  94
  95         /* Called in indirect_* to avoid touching devices */
  96         int (*pci_exclude_device)(unsigned char, unsigned char);
  97
  98         /* Called at then very end of pcibios_init() */
  99         void (*pcibios_after_init)(void);
 100
 101         /* Get access protection for /dev/mem */
 102         pgprot_t        (*phys_mem_access_prot)(struct file *file,
 103                                                 unsigned long pfn,
 104                                                 unsigned long size,
 105                                                 pgprot_t vma_prot);
 106
 107         /* this is for modules, since _machine can be a define -- Cort */
 108         int ppc_machine;
 109
 110         /* Motherboard/chipset features. This is a kind of general purpose
 111          * hook used to control some machine specific features (like reset
 112          * lines, chip power control, etc...).
 113          */
 114         long (*feature_call)(unsigned int feature, ...);
 115
 116 #ifdef CONFIG_SMP
 117         /* functions for dealing with other cpus */
 118         struct smp_ops_t *smp_ops;
 119 #endif /* CONFIG_SMP */
 120
 121 #ifdef CONFIG_KEXEC
 122         /* Called to shutdown machine specific hardware not already controlled
 123          * by other drivers.
 124          * XXX Should we move this one out of kexec scope?
 125          */
 126         void (*machine_shutdown)(void);
 127
 128         /* Called to do the minimal shutdown needed to run a kexec'd kernel
 129          * to run successfully.
 130          * XXX Should we move this one out of kexec scope?
 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
 152 extern struct machdep_calls ppc_md;
 153 extern char cmd_line[COMMAND_LINE_SIZE];
 154
 155 extern void setup_pci_ptrs(void);
 156
 157 #ifdef CONFIG_SMP
 158 struct 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 */
 169 extern void __devinit smp_generic_give_timebase(void);
 170 extern void __devinit smp_generic_take_timebase(void);
 171 #endif /* CONFIG_SMP */
 172
 173 #endif /* _PPC_MACHDEP_H */
 174 #endif /* __KERNEL__ */