linux/include/asm-powerpc/machdep.h
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   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/seq_file.h>
  13#include <linux/init.h>
  14#include <linux/dma-mapping.h>
  15
  16#include <asm/setup.h>
  17
  18/* We export this macro for external modules like Alsa to know if
  19 * ppc_md.feature_call is implemented or not
  20 */
  21#define CONFIG_PPC_HAS_FEATURE_CALLS
  22
  23struct pt_regs;
  24struct pci_bus; 
  25struct device_node;
  26struct iommu_table;
  27struct rtc_time;
  28struct file;
  29struct pci_controller;
  30#ifdef CONFIG_KEXEC
  31struct kimage;
  32#endif
  33
  34#ifdef CONFIG_SMP
  35struct smp_ops_t {
  36        void  (*message_pass)(int target, int msg);
  37        int   (*probe)(void);
  38        void  (*kick_cpu)(int nr);
  39        void  (*setup_cpu)(int nr);
  40        void  (*take_timebase)(void);
  41        void  (*give_timebase)(void);
  42        int   (*cpu_enable)(unsigned int nr);
  43        int   (*cpu_disable)(void);
  44        void  (*cpu_die)(unsigned int nr);
  45        int   (*cpu_bootable)(unsigned int nr);
  46};
  47#endif
  48
  49struct machdep_calls {
  50        char            *name;
  51#ifdef CONFIG_PPC64
  52        void            (*hpte_invalidate)(unsigned long slot,
  53                                           unsigned long va,
  54                                           int psize, int ssize,
  55                                           int local);
  56        long            (*hpte_updatepp)(unsigned long slot, 
  57                                         unsigned long newpp, 
  58                                         unsigned long va,
  59                                         int psize, int ssize,
  60                                         int local);
  61        void            (*hpte_updateboltedpp)(unsigned long newpp, 
  62                                               unsigned long ea,
  63                                               int psize, int ssize);
  64        long            (*hpte_insert)(unsigned long hpte_group,
  65                                       unsigned long va,
  66                                       unsigned long prpn,
  67                                       unsigned long rflags,
  68                                       unsigned long vflags,
  69                                       int psize, int ssize);
  70        long            (*hpte_remove)(unsigned long hpte_group);
  71        void            (*flush_hash_range)(unsigned long number, int local);
  72
  73        /* special for kexec, to be called in real mode, linar mapping is
  74         * destroyed as well */
  75        void            (*hpte_clear_all)(void);
  76
  77        void            (*tce_build)(struct iommu_table * tbl,
  78                                     long index,
  79                                     long npages,
  80                                     unsigned long uaddr,
  81                                     enum dma_data_direction direction);
  82        void            (*tce_free)(struct iommu_table *tbl,
  83                                    long index,
  84                                    long npages);
  85        unsigned long   (*tce_get)(struct iommu_table *tbl,
  86                                    long index);
  87        void            (*tce_flush)(struct iommu_table *tbl);
  88        void            (*pci_dma_dev_setup)(struct pci_dev *dev);
  89        void            (*pci_dma_bus_setup)(struct pci_bus *bus);
  90
  91        void __iomem *  (*ioremap)(phys_addr_t addr, unsigned long size,
  92                                   unsigned long flags);
  93        void            (*iounmap)(volatile void __iomem *token);
  94
  95#ifdef CONFIG_PM
  96        void            (*iommu_save)(void);
  97        void            (*iommu_restore)(void);
  98#endif
  99#endif /* CONFIG_PPC64 */
 100
 101        int             (*probe)(void);
 102        void            (*setup_arch)(void); /* Optional, may be NULL */
 103        void            (*init_early)(void);
 104        /* Optional, may be NULL. */
 105        void            (*show_cpuinfo)(struct seq_file *m);
 106        void            (*show_percpuinfo)(struct seq_file *m, int i);
 107
 108        void            (*init_IRQ)(void);
 109        unsigned int    (*get_irq)(void);
 110#ifdef CONFIG_KEXEC
 111        void            (*kexec_cpu_down)(int crash_shutdown, int secondary);
 112#endif
 113
 114        /* PCI stuff */
 115        /* Called after scanning the bus, before allocating resources */
 116        void            (*pcibios_fixup)(void);
 117        int             (*pci_probe_mode)(struct pci_bus *);
 118        void            (*pci_irq_fixup)(struct pci_dev *dev);
 119
 120        /* To setup PHBs when using automatic OF platform driver for PCI */
 121        int             (*pci_setup_phb)(struct pci_controller *host);
 122
 123#ifdef CONFIG_PCI_MSI
 124        int             (*msi_check_device)(struct pci_dev* dev,
 125                                            int nvec, int type);
 126        int             (*setup_msi_irqs)(struct pci_dev *dev,
 127                                          int nvec, int type);
 128        void            (*teardown_msi_irqs)(struct pci_dev *dev);
 129#endif
 130
 131        void            (*restart)(char *cmd);
 132        void            (*power_off)(void);
 133        void            (*halt)(void);
 134        void            (*panic)(char *str);
 135        void            (*cpu_die)(void);
 136
 137        long            (*time_init)(void); /* Optional, may be NULL */
 138
 139        int             (*set_rtc_time)(struct rtc_time *);
 140        void            (*get_rtc_time)(struct rtc_time *);
 141        unsigned long   (*get_boot_time)(void);
 142        unsigned char   (*rtc_read_val)(int addr);
 143        void            (*rtc_write_val)(int addr, unsigned char val);
 144
 145        void            (*calibrate_decr)(void);
 146
 147        void            (*progress)(char *, unsigned short);
 148
 149        /* Interface for platform error logging */
 150        void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 151
 152        unsigned char   (*nvram_read_val)(int addr);
 153        void            (*nvram_write_val)(int addr, unsigned char val);
 154        ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 155        ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);  
 156        ssize_t         (*nvram_size)(void);            
 157        void            (*nvram_sync)(void);
 158
 159        /* Exception handlers */
 160        int             (*system_reset_exception)(struct pt_regs *regs);
 161        int             (*machine_check_exception)(struct pt_regs *regs);
 162
 163        /* Motherboard/chipset features. This is a kind of general purpose
 164         * hook used to control some machine specific features (like reset
 165         * lines, chip power control, etc...).
 166         */
 167        long            (*feature_call)(unsigned int feature, ...);
 168
 169        /* Get legacy PCI/IDE interrupt mapping */ 
 170        int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 171        
 172        /* Get access protection for /dev/mem */
 173        pgprot_t        (*phys_mem_access_prot)(struct file *file,
 174                                                unsigned long pfn,
 175                                                unsigned long size,
 176                                                pgprot_t vma_prot);
 177
 178        /* Idle loop for this platform, leave empty for default idle loop */
 179        void            (*idle_loop)(void);
 180
 181        /*
 182         * Function for waiting for work with reduced power in idle loop;
 183         * called with interrupts disabled.
 184         */
 185        void            (*power_save)(void);
 186
 187        /* Function to enable performance monitor counters for this
 188           platform, called once per cpu. */
 189        void            (*enable_pmcs)(void);
 190
 191        /* Set DABR for this platform, leave empty for default implemenation */
 192        int             (*set_dabr)(unsigned long dabr);
 193
 194#ifdef CONFIG_PPC32     /* XXX for now */
 195        /* A general init function, called by ppc_init in init/main.c.
 196           May be NULL. */
 197        void            (*init)(void);
 198
 199        void            (*setup_io_mappings)(void);
 200
 201        void            (*early_serial_map)(void);
 202        void            (*kgdb_map_scc)(void);
 203
 204        /*
 205         * optional PCI "hooks"
 206         */
 207        /* Called in indirect_* to avoid touching devices */
 208        int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
 209
 210        /* Called at then very end of pcibios_init() */
 211        void (*pcibios_after_init)(void);
 212
 213#endif /* CONFIG_PPC32 */
 214
 215        /* Called after PPC generic resource fixup to perform
 216           machine specific fixups */
 217        void (*pcibios_fixup_resources)(struct pci_dev *);
 218
 219        /* Called for each PCI bus in the system when it's probed */
 220        void (*pcibios_fixup_bus)(struct pci_bus *);
 221
 222        /* Called when pci_enable_device() is called. Returns 0 to
 223         * allow assignment/enabling of the device. */
 224        int  (*pcibios_enable_device_hook)(struct pci_dev *);
 225
 226        /* Called to shutdown machine specific hardware not already controlled
 227         * by other drivers.
 228         */
 229        void (*machine_shutdown)(void);
 230
 231#ifdef CONFIG_KEXEC
 232        /* Called to do the minimal shutdown needed to run a kexec'd kernel
 233         * to run successfully.
 234         * XXX Should we move this one out of kexec scope?
 235         */
 236        void (*machine_crash_shutdown)(struct pt_regs *regs);
 237
 238        /* Called to do what every setup is needed on image and the
 239         * reboot code buffer. Returns 0 on success.
 240         * Provide your own (maybe dummy) implementation if your platform
 241         * claims to support kexec.
 242         */
 243        int (*machine_kexec_prepare)(struct kimage *image);
 244
 245        /* Called to handle any machine specific cleanup on image */
 246        void (*machine_kexec_cleanup)(struct kimage *image);
 247
 248        /* Called to perform the _real_ kexec.
 249         * Do NOT allocate memory or fail here. We are past the point of
 250         * no return.
 251         */
 252        void (*machine_kexec)(struct kimage *image);
 253#endif /* CONFIG_KEXEC */
 254
 255#ifdef CONFIG_SUSPEND
 256        /* These are called to disable and enable, respectively, IRQs when
 257         * entering a suspend state.  If NULL, then the generic versions
 258         * will be called.  The generic versions disable/enable the
 259         * decrementer along with interrupts.
 260         */
 261        void (*suspend_disable_irqs)(void);
 262        void (*suspend_enable_irqs)(void);
 263#endif
 264};
 265
 266extern void power4_idle(void);
 267extern void power4_cpu_offline_powersave(void);
 268extern void ppc6xx_idle(void);
 269
 270/*
 271 * ppc_md contains a copy of the machine description structure for the
 272 * current platform. machine_id contains the initial address where the
 273 * description was found during boot.
 274 */
 275extern struct machdep_calls ppc_md;
 276extern struct machdep_calls *machine_id;
 277
 278#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
 279
 280#define define_machine(name)                                    \
 281        extern struct machdep_calls mach_##name;                \
 282        EXPORT_SYMBOL(mach_##name);                             \
 283        struct machdep_calls mach_##name __machine_desc =
 284
 285#define machine_is(name) \
 286        ({ \
 287                extern struct machdep_calls mach_##name \
 288                        __attribute__((weak));           \
 289                machine_id == &mach_##name; \
 290        })
 291
 292extern void probe_machine(void);
 293
 294extern char cmd_line[COMMAND_LINE_SIZE];
 295
 296#ifdef CONFIG_PPC_PMAC
 297/*
 298 * Power macintoshes have either a CUDA, PMU or SMU controlling
 299 * system reset, power, NVRAM, RTC.
 300 */
 301typedef enum sys_ctrler_kind {
 302        SYS_CTRLER_UNKNOWN = 0,
 303        SYS_CTRLER_CUDA = 1,
 304        SYS_CTRLER_PMU = 2,
 305        SYS_CTRLER_SMU = 3,
 306} sys_ctrler_t;
 307extern sys_ctrler_t sys_ctrler;
 308
 309#endif /* CONFIG_PPC_PMAC */
 310
 311extern void setup_pci_ptrs(void);
 312
 313#ifdef CONFIG_SMP
 314/* Poor default implementations */
 315extern void __devinit smp_generic_give_timebase(void);
 316extern void __devinit smp_generic_take_timebase(void);
 317#endif /* CONFIG_SMP */
 318
 319
 320/* Functions to produce codes on the leds.
 321 * The SRC code should be unique for the message category and should
 322 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 323 * and (for boot & dump) should be sorted numerically in the order
 324 * the events occur.
 325 */
 326/* Print a boot progress message. */
 327void ppc64_boot_msg(unsigned int src, const char *msg);
 328/* Print a termination message (print only -- does not stop the kernel) */
 329void ppc64_terminate_msg(unsigned int src, const char *msg);
 330
 331static inline void log_error(char *buf, unsigned int err_type, int fatal)
 332{
 333        if (ppc_md.log_error)
 334                ppc_md.log_error(buf, err_type, fatal);
 335}
 336
 337#define __define_machine_initcall(mach,level,fn,id) \
 338        static int __init __machine_initcall_##mach##_##fn(void) { \
 339                if (machine_is(mach)) return fn(); \
 340                return 0; \
 341        } \
 342        __define_initcall(level,__machine_initcall_##mach##_##fn,id);
 343
 344#define machine_core_initcall(mach,fn)          __define_machine_initcall(mach,"1",fn,1)
 345#define machine_core_initcall_sync(mach,fn)     __define_machine_initcall(mach,"1s",fn,1s)
 346#define machine_postcore_initcall(mach,fn)      __define_machine_initcall(mach,"2",fn,2)
 347#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
 348#define machine_arch_initcall(mach,fn)          __define_machine_initcall(mach,"3",fn,3)
 349#define machine_arch_initcall_sync(mach,fn)     __define_machine_initcall(mach,"3s",fn,3s)
 350#define machine_subsys_initcall(mach,fn)        __define_machine_initcall(mach,"4",fn,4)
 351#define machine_subsys_initcall_sync(mach,fn)   __define_machine_initcall(mach,"4s",fn,4s)
 352#define machine_fs_initcall(mach,fn)            __define_machine_initcall(mach,"5",fn,5)
 353#define machine_fs_initcall_sync(mach,fn)       __define_machine_initcall(mach,"5s",fn,5s)
 354#define machine_rootfs_initcall(mach,fn)        __define_machine_initcall(mach,"rootfs",fn,rootfs)
 355#define machine_device_initcall(mach,fn)        __define_machine_initcall(mach,"6",fn,6)
 356#define machine_device_initcall_sync(mach,fn)   __define_machine_initcall(mach,"6s",fn,6s)
 357#define machine_late_initcall(mach,fn)          __define_machine_initcall(mach,"7",fn,7)
 358#define machine_late_initcall_sync(mach,fn)     __define_machine_initcall(mach,"7s",fn,7s)
 359
 360void generic_suspend_disable_irqs(void);
 361void generic_suspend_enable_irqs(void);
 362
 363#endif /* __KERNEL__ */
 364#endif /* _ASM_POWERPC_MACHDEP_H */
 365
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