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 context,
  60                                             unsigned long number,
  61                                             int local);
  62         /* special for kexec, to be called in real mode, linar mapping is
  63          * destroyed as well */
  64         void            (*hpte_clear_all)(void);
  65
  66         void            (*tce_build)(struct iommu_table * tbl,
  67                                      long index,
  68                                      long npages,
  69                                      unsigned long uaddr,
  70                                      enum dma_data_direction direction);
  71         void            (*tce_free)(struct iommu_table *tbl,
  72                                     long index,
  73                                     long npages);
  74         void            (*tce_flush)(struct iommu_table *tbl);
  75         void            (*iommu_dev_setup)(struct pci_dev *dev);
  76         void            (*iommu_bus_setup)(struct pci_bus *bus);
  77         void            (*irq_bus_setup)(struct pci_bus *bus);
  78
  79         int             (*probe)(int platform);
  80         void            (*setup_arch)(void);
  81         void            (*init_early)(void);
  82         /* Optional, may be NULL. */
  83         void            (*get_cpuinfo)(struct seq_file *m);
  84
  85         void            (*init_IRQ)(void);
  86         int             (*get_irq)(struct pt_regs *);
  87         void            (*cpu_irq_down)(void);
  88
  89         /* PCI stuff */
  90         void            (*pcibios_fixup)(void);
  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         /* Debug interface.  Low level I/O to some terminal device */
 107         void            (*udbg_putc)(unsigned char c);
 108         unsigned char   (*udbg_getc)(void);
 109         int             (*udbg_getc_poll)(void);
 110
 111         /* Interface for platform error logging */
 112         void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 113
 114         ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 115         ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);
 116         ssize_t         (*nvram_size)(void);
 117         int             (*nvram_sync)(void);
 118
 119         /* Exception handlers */
 120         void            (*system_reset_exception)(struct pt_regs *regs);
 121         int             (*machine_check_exception)(struct pt_regs *regs);
 122
 123         /* Motherboard/chipset features. This is a kind of general purpose
 124          * hook used to control some machine specific features (like reset
 125          * lines, chip power control, etc...).
 126          */
 127         long            (*feature_call)(unsigned int feature, ...);
 128
 129         /* Check availability of legacy devices like i8042 */
 130         int             (*check_legacy_ioport)(unsigned int baseport);
 131
 132         /* Get legacy PCI/IDE interrupt mapping */
 133         int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 134
 135         /* Get access protection for /dev/mem */
 136         pgprot_t        (*phys_mem_access_prot)(struct file *file,
 137                                                 unsigned long offset,
 138                                                 unsigned long size,
 139                                                 pgprot_t vma_prot);
 140
 141         /* Idle loop for this platform, leave empty for default idle loop */
 142         int             (*idle_loop)(void);
 143 };
 144
 145 extern int default_idle(void);
 146 extern int native_idle(void);
 147
 148 extern struct machdep_calls ppc_md;
 149 extern char cmd_line[COMMAND_LINE_SIZE];
 150
 151 #ifdef CONFIG_PPC_PMAC
 152 /*
 153  * Power macintoshes have either a CUDA, PMU or SMU controlling
 154  * system reset, power, NVRAM, RTC.
 155  */
 156 typedef enum sys_ctrler_kind {
 157         SYS_CTRLER_UNKNOWN = 0,
 158         SYS_CTRLER_CUDA = 1,
 159         SYS_CTRLER_PMU = 2,
 160         SYS_CTRLER_SMU = 3,
 161 } sys_ctrler_t;
 162 extern sys_ctrler_t sys_ctrler;
 163
 164 #endif /* CONFIG_PPC_PMAC */
 165
 166
 167
 168 /* Functions to produce codes on the leds.
 169  * The SRC code should be unique for the message category and should
 170  * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 171  * and (for boot & dump) should be sorted numerically in the order
 172  * the events occur.
 173  */
 174 /* Print a boot progress message. */
 175 void ppc64_boot_msg(unsigned int src, const char *msg);
 176 /* Print a termination message (print only -- does not stop the kernel) */
 177 void ppc64_terminate_msg(unsigned int src, const char *msg);
 178 /* Print something that needs attention (device error, etc) */
 179 void ppc64_attention_msg(unsigned int src, const char *msg);
 180 /* Print a dump progress message. */
 181 void ppc64_dump_msg(unsigned int src, const char *msg);
 182
 183 static inline void log_error(char *buf, unsigned int err_type, int fatal)
 184 {
 185         if (ppc_md.log_error)
 186                 ppc_md.log_error(buf, err_type, fatal);
 187 }
 188
 189 #endif /* _PPC64_MACHDEP_H */
 190 #endif /* __KERNEL__ */