include/asm-ppc64/machdep.h

   1 #ifdef __KERNEL__
   2 #ifndef _PPC64_MACHDEP_H
   3 #define _PPC64_MACHDEP_H
   4
   5 /*
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <linux/config.h>
  13 #include <linux/seq_file.h>
  14 #include <linux/init.h>
  15 #include <linux/dma-mapping.h>
  16
  17 #include <asm/setup.h>
  18
  19 struct pt_regs;
  20 struct pci_bus;
  21 struct device_node;
  22 struct iommu_table;
  23 struct rtc_time;
  24 struct file;
  25
  26 #ifdef CONFIG_SMP
  27 struct smp_ops_t {
  28         void  (*message_pass)(int target, int msg);
  29         int   (*probe)(void);
  30         void  (*kick_cpu)(int nr);
  31         void  (*setup_cpu)(int nr);
  32         void  (*take_timebase)(void);
  33         void  (*give_timebase)(void);
  34         int   (*cpu_enable)(unsigned int nr);
  35         int   (*cpu_disable)(void);
  36         void  (*cpu_die)(unsigned int nr);
  37         int   (*cpu_bootable)(unsigned int nr);
  38 };
  39 #endif
  40
  41 struct machdep_calls {
  42         void            (*hpte_invalidate)(unsigned long slot,
  43                                            unsigned long va,
  44                                            int large,
  45                                            int local);
  46         long            (*hpte_updatepp)(unsigned long slot,
  47                                          unsigned long newpp,
  48                                          unsigned long va,
  49                                          int large,
  50                                          int local);
  51         void            (*hpte_updateboltedpp)(unsigned long newpp,
  52                                                unsigned long ea);
  53         long            (*hpte_insert)(unsigned long hpte_group,
  54                                        unsigned long va,
  55                                        unsigned long prpn,
  56                                        unsigned long vflags,
  57                                        unsigned long rflags);
  58         long            (*hpte_remove)(unsigned long hpte_group);
  59         void            (*flush_hash_range)(unsigned long number, int local);
  60
  61         /* special for kexec, to be called in real mode, linar mapping is
  62          * destroyed as well */
  63         void            (*hpte_clear_all)(void);
  64
  65         void            (*tce_build)(struct iommu_table * tbl,
  66                                      long index,
  67                                      long npages,
  68                                      unsigned long uaddr,
  69                                      enum dma_data_direction direction);
  70         void            (*tce_free)(struct iommu_table *tbl,
  71                                     long index,
  72                                     long npages);
  73         void            (*tce_flush)(struct iommu_table *tbl);
  74         void            (*iommu_dev_setup)(struct pci_dev *dev);
  75         void            (*iommu_bus_setup)(struct pci_bus *bus);
  76         void            (*irq_bus_setup)(struct pci_bus *bus);
  77
  78         int             (*probe)(int platform);
  79         void            (*setup_arch)(void);
  80         void            (*init_early)(void);
  81         /* Optional, may be NULL. */
  82         void            (*get_cpuinfo)(struct seq_file *m);
  83
  84         void            (*init_IRQ)(void);
  85         int             (*get_irq)(struct pt_regs *);
  86         void            (*cpu_irq_down)(int secondary);
  87
  88         /* PCI stuff */
  89         void            (*pcibios_fixup)(void);
  90         int             (*pci_probe_mode)(struct pci_bus *);
  91
  92         void            (*restart)(char *cmd);
  93         void            (*power_off)(void);
  94         void            (*halt)(void);
  95         void            (*panic)(char *str);
  96         void            (*cpu_die)(void);
  97
  98         int             (*set_rtc_time)(struct rtc_time *);
  99         void            (*get_rtc_time)(struct rtc_time *);
 100         void            (*get_boot_time)(struct rtc_time *);
 101
 102         void            (*calibrate_decr)(void);
 103
 104         void            (*progress)(char *, unsigned short);
 105
 106         /* Interface for platform error logging */
 107         void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 108
 109         ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 110         ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);
 111         ssize_t         (*nvram_size)(void);
 112         int             (*nvram_sync)(void);
 113
 114         /* Exception handlers */
 115         void            (*system_reset_exception)(struct pt_regs *regs);
 116         int             (*machine_check_exception)(struct pt_regs *regs);
 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         /* Check availability of legacy devices like i8042 */
 125         int             (*check_legacy_ioport)(unsigned int baseport);
 126
 127         /* Get legacy PCI/IDE interrupt mapping */
 128         int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 129
 130         /* Get access protection for /dev/mem */
 131         pgprot_t        (*phys_mem_access_prot)(struct file *file,
 132                                                 unsigned long offset,
 133                                                 unsigned long size,
 134                                                 pgprot_t vma_prot);
 135
 136         /* Idle loop for this platform, leave empty for default idle loop */
 137         int             (*idle_loop)(void);
 138
 139         /* Function to enable pmcs for this platform, called once per cpu. */
 140         void            (*enable_pmcs)(void);
 141 };
 142
 143 extern int default_idle(void);
 144 extern int native_idle(void);
 145
 146 extern struct machdep_calls ppc_md;
 147 extern char cmd_line[COMMAND_LINE_SIZE];
 148
 149 #ifdef CONFIG_PPC_PMAC
 150 /*
 151  * Power macintoshes have either a CUDA, PMU or SMU controlling
 152  * system reset, power, NVRAM, RTC.
 153  */
 154 typedef enum sys_ctrler_kind {
 155         SYS_CTRLER_UNKNOWN = 0,
 156         SYS_CTRLER_CUDA = 1,
 157         SYS_CTRLER_PMU = 2,
 158         SYS_CTRLER_SMU = 3,
 159 } sys_ctrler_t;
 160 extern sys_ctrler_t sys_ctrler;
 161
 162 #endif /* CONFIG_PPC_PMAC */
 163
 164
 165
 166 /* Functions to produce codes on the leds.
 167  * The SRC code should be unique for the message category and should
 168  * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 169  * and (for boot & dump) should be sorted numerically in the order
 170  * the events occur.
 171  */
 172 /* Print a boot progress message. */
 173 void ppc64_boot_msg(unsigned int src, const char *msg);
 174 /* Print a termination message (print only -- does not stop the kernel) */
 175 void ppc64_terminate_msg(unsigned int src, const char *msg);
 176
 177 static inline void log_error(char *buf, unsigned int err_type, int fatal)
 178 {
 179         if (ppc_md.log_error)
 180                 ppc_md.log_error(buf, err_type, fatal);
 181 }
 182
 183 #endif /* _PPC64_MACHDEP_H */
 184 #endif /* __KERNEL__ */