include/asm-powerpc/machdep.h

   1 #ifndef _ASM_POWERPC_MACHDEP_H
   2 #define _ASM_POWERPC_MACHDEP_H
   3 #ifdef __KERNEL__
   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 /* We export this macro for external modules like Alsa to know if
  20  * ppc_md.feature_call is implemented or not
  21  */
  22 #define CONFIG_PPC_HAS_FEATURE_CALLS
  23
  24 struct pt_regs;
  25 struct pci_bus;
  26 struct device_node;
  27 struct iommu_table;
  28 struct rtc_time;
  29 struct file;
  30
  31 #ifdef CONFIG_SMP
  32 struct smp_ops_t {
  33         void  (*message_pass)(int target, int msg);
  34         int   (*probe)(void);
  35         void  (*kick_cpu)(int nr);
  36         void  (*setup_cpu)(int nr);
  37         void  (*take_timebase)(void);
  38         void  (*give_timebase)(void);
  39         int   (*cpu_enable)(unsigned int nr);
  40         int   (*cpu_disable)(void);
  41         void  (*cpu_die)(unsigned int nr);
  42         int   (*cpu_bootable)(unsigned int nr);
  43 };
  44 #endif
  45
  46 struct machdep_calls {
  47 #ifdef CONFIG_PPC64
  48         void            (*hpte_invalidate)(unsigned long slot,
  49                                            unsigned long va,
  50                                            int psize,
  51                                            int local);
  52         long            (*hpte_updatepp)(unsigned long slot,
  53                                          unsigned long newpp,
  54                                          unsigned long va,
  55                                          int pize,
  56                                          int local);
  57         void            (*hpte_updateboltedpp)(unsigned long newpp,
  58                                                unsigned long ea,
  59                                                int psize);
  60         long            (*hpte_insert)(unsigned long hpte_group,
  61                                        unsigned long va,
  62                                        unsigned long prpn,
  63                                        unsigned long rflags,
  64                                        unsigned long vflags,
  65                                        int psize);
  66         long            (*hpte_remove)(unsigned long hpte_group);
  67         void            (*flush_hash_range)(unsigned long number, int local);
  68
  69         /* special for kexec, to be called in real mode, linar mapping is
  70          * destroyed as well */
  71         void            (*hpte_clear_all)(void);
  72
  73         void            (*tce_build)(struct iommu_table * tbl,
  74                                      long index,
  75                                      long npages,
  76                                      unsigned long uaddr,
  77                                      enum dma_data_direction direction);
  78         void            (*tce_free)(struct iommu_table *tbl,
  79                                     long index,
  80                                     long npages);
  81         void            (*tce_flush)(struct iommu_table *tbl);
  82         void            (*iommu_dev_setup)(struct pci_dev *dev);
  83         void            (*iommu_bus_setup)(struct pci_bus *bus);
  84         void            (*irq_bus_setup)(struct pci_bus *bus);
  85         int             (*set_dabr)(unsigned long dabr);
  86 #endif
  87
  88         int             (*probe)(int platform);
  89         void            (*setup_arch)(void);
  90         void            (*init_early)(void);
  91         /* Optional, may be NULL. */
  92         void            (*show_cpuinfo)(struct seq_file *m);
  93         void            (*show_percpuinfo)(struct seq_file *m, int i);
  94
  95         void            (*init_IRQ)(void);
  96         int             (*get_irq)(struct pt_regs *);
  97         void            (*cpu_irq_down)(int secondary);
  98
  99         /* PCI stuff */
 100         /* Called after scanning the bus, before allocating resources */
 101         void            (*pcibios_fixup)(void);
 102         int             (*pci_probe_mode)(struct pci_bus *);
 103
 104         void            (*restart)(char *cmd);
 105         void            (*power_off)(void);
 106         void            (*halt)(void);
 107         void            (*panic)(char *str);
 108         void            (*cpu_die)(void);
 109
 110         long            (*time_init)(void); /* Optional, may be NULL */
 111
 112         int             (*set_rtc_time)(struct rtc_time *);
 113         void            (*get_rtc_time)(struct rtc_time *);
 114         unsigned long   (*get_boot_time)(void);
 115         unsigned char   (*rtc_read_val)(int addr);
 116         void            (*rtc_write_val)(int addr, unsigned char val);
 117
 118         void            (*calibrate_decr)(void);
 119
 120         void            (*progress)(char *, unsigned short);
 121
 122         /* Interface for platform error logging */
 123         void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 124
 125         unsigned char   (*nvram_read_val)(int addr);
 126         void            (*nvram_write_val)(int addr, unsigned char val);
 127         ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 128         ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);
 129         ssize_t         (*nvram_size)(void);
 130         void            (*nvram_sync)(void);
 131
 132         /* Exception handlers */
 133         void            (*system_reset_exception)(struct pt_regs *regs);
 134         int             (*machine_check_exception)(struct pt_regs *regs);
 135
 136         /* Motherboard/chipset features. This is a kind of general purpose
 137          * hook used to control some machine specific features (like reset
 138          * lines, chip power control, etc...).
 139          */
 140         long            (*feature_call)(unsigned int feature, ...);
 141
 142         /* Check availability of legacy devices like i8042 */
 143         int             (*check_legacy_ioport)(unsigned int baseport);
 144
 145         /* Get legacy PCI/IDE interrupt mapping */
 146         int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 147
 148         /* Get access protection for /dev/mem */
 149         pgprot_t        (*phys_mem_access_prot)(struct file *file,
 150                                                 unsigned long pfn,
 151                                                 unsigned long size,
 152                                                 pgprot_t vma_prot);
 153
 154         /* Idle loop for this platform, leave empty for default idle loop */
 155         void            (*idle_loop)(void);
 156
 157         /* Function to enable performance monitor counters for this
 158            platform, called once per cpu. */
 159         void            (*enable_pmcs)(void);
 160
 161 #ifdef CONFIG_PPC32     /* XXX for now */
 162         /* A general init function, called by ppc_init in init/main.c.
 163            May be NULL. */
 164         void            (*init)(void);
 165
 166         void            (*idle)(void);
 167         void            (*power_save)(void);
 168
 169         void            (*heartbeat)(void);
 170         unsigned long   heartbeat_reset;
 171         unsigned long   heartbeat_count;
 172
 173         void            (*setup_io_mappings)(void);
 174
 175         void            (*early_serial_map)(void);
 176         void            (*kgdb_map_scc)(void);
 177
 178         /*
 179          * optional PCI "hooks"
 180          */
 181
 182         /* Called after PPC generic resource fixup to perform
 183            machine specific fixups */
 184         void (*pcibios_fixup_resources)(struct pci_dev *);
 185
 186         /* Called for each PCI bus in the system when it's probed */
 187         void (*pcibios_fixup_bus)(struct pci_bus *);
 188
 189         /* Called when pci_enable_device() is called (initial=0) or
 190          * when a device with no assigned resource is found (initial=1).
 191          * Returns 0 to allow assignment/enabling of the device. */
 192         int  (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
 193
 194         /* For interrupt routing */
 195         unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
 196         int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
 197
 198         /* Called in indirect_* to avoid touching devices */
 199         int (*pci_exclude_device)(unsigned char, unsigned char);
 200
 201         /* Called at then very end of pcibios_init() */
 202         void (*pcibios_after_init)(void);
 203
 204         /* this is for modules, since _machine can be a define -- Cort */
 205         int ppc_machine;
 206
 207 #ifdef CONFIG_KEXEC
 208         /* Called to shutdown machine specific hardware not already controlled
 209          * by other drivers.
 210          * XXX Should we move this one out of kexec scope?
 211          */
 212         void (*machine_shutdown)(void);
 213
 214         /* Called to do the minimal shutdown needed to run a kexec'd kernel
 215          * to run successfully.
 216          * XXX Should we move this one out of kexec scope?
 217          */
 218         void (*machine_crash_shutdown)(void);
 219
 220         /* Called to do what every setup is needed on image and the
 221          * reboot code buffer. Returns 0 on success.
 222          * Provide your own (maybe dummy) implementation if your platform
 223          * claims to support kexec.
 224          */
 225         int (*machine_kexec_prepare)(struct kimage *image);
 226
 227         /* Called to handle any machine specific cleanup on image */
 228         void (*machine_kexec_cleanup)(struct kimage *image);
 229
 230         /* Called to perform the _real_ kexec.
 231          * Do NOT allocate memory or fail here. We are past the point of
 232          * no return.
 233          */
 234         void (*machine_kexec)(struct kimage *image);
 235 #endif /* CONFIG_KEXEC */
 236 #endif /* CONFIG_PPC32 */
 237 };
 238
 239 extern void default_idle(void);
 240 extern void native_idle(void);
 241
 242 extern struct machdep_calls ppc_md;
 243 extern char cmd_line[COMMAND_LINE_SIZE];
 244
 245 #ifdef CONFIG_PPC_PMAC
 246 /*
 247  * Power macintoshes have either a CUDA, PMU or SMU controlling
 248  * system reset, power, NVRAM, RTC.
 249  */
 250 typedef enum sys_ctrler_kind {
 251         SYS_CTRLER_UNKNOWN = 0,
 252         SYS_CTRLER_CUDA = 1,
 253         SYS_CTRLER_PMU = 2,
 254         SYS_CTRLER_SMU = 3,
 255 } sys_ctrler_t;
 256 extern sys_ctrler_t sys_ctrler;
 257
 258 #endif /* CONFIG_PPC_PMAC */
 259
 260 extern void setup_pci_ptrs(void);
 261
 262 #ifdef CONFIG_SMP
 263 /* Poor default implementations */
 264 extern void __devinit smp_generic_give_timebase(void);
 265 extern void __devinit smp_generic_take_timebase(void);
 266 #endif /* CONFIG_SMP */
 267
 268
 269 /* Functions to produce codes on the leds.
 270  * The SRC code should be unique for the message category and should
 271  * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 272  * and (for boot & dump) should be sorted numerically in the order
 273  * the events occur.
 274  */
 275 /* Print a boot progress message. */
 276 void ppc64_boot_msg(unsigned int src, const char *msg);
 277 /* Print a termination message (print only -- does not stop the kernel) */
 278 void ppc64_terminate_msg(unsigned int src, const char *msg);
 279
 280 static inline void log_error(char *buf, unsigned int err_type, int fatal)
 281 {
 282         if (ppc_md.log_error)
 283                 ppc_md.log_error(buf, err_type, fatal);
 284 }
 285
 286 #endif /* __KERNEL__ */
 287 #endif /* _ASM_POWERPC_MACHDEP_H */