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. */
  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 pfn,
 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
 150 extern struct machdep_calls ppc_md;
 151 extern char cmd_line[COMMAND_LINE_SIZE];
 152
 153 extern 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  */
 159 typedef 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
 166 extern sys_ctrler_t sys_ctrler;
 167
 168 #ifdef CONFIG_SMP
 169 struct smp_ops_t {
 170         void  (*message_pass)(int target, int msg);
 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 */
 180 extern void __devinit smp_generic_give_timebase(void);
 181 extern void __devinit smp_generic_take_timebase(void);
 182 #endif /* CONFIG_SMP */
 183
 184 #endif /* _PPC_MACHDEP_H */
 185 #endif /* __KERNEL__ */