LXR linux/arch/powerpc/include/asm/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/seq_file.h>
  13#include <linux/init.h>
  14#include <linux/dma-mapping.h>
  15#include <linux/export.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
  24struct pt_regs;
  25struct pci_bus; 
  26struct device_node;
  27struct iommu_table;
  28struct rtc_time;
  29struct file;
  30struct pci_controller;
  31struct kimage;
  32
  33struct machdep_calls {
  34        char            *name;
  35#ifdef CONFIG_PPC64
  36        void            (*hpte_invalidate)(unsigned long slot,
  37                                           unsigned long vpn,
  38                                           int psize, int ssize,
  39                                           int local);
  40        long            (*hpte_updatepp)(unsigned long slot, 
  41                                         unsigned long newpp, 
  42                                         unsigned long vpn,
  43                                         int psize, int ssize,
  44                                         int local);
  45        void            (*hpte_updateboltedpp)(unsigned long newpp, 
  46                                               unsigned long ea,
  47                                               int psize, int ssize);
  48        long            (*hpte_insert)(unsigned long hpte_group,
  49                                       unsigned long vpn,
  50                                       unsigned long prpn,
  51                                       unsigned long rflags,
  52                                       unsigned long vflags,
  53                                       int psize, int ssize);
  54        long            (*hpte_remove)(unsigned long hpte_group);
  55        void            (*hpte_removebolted)(unsigned long ea,
  56                                             int psize, int ssize);
  57        void            (*flush_hash_range)(unsigned long number, int local);
  58
  59        /* special for kexec, to be called in real mode, linear mapping is
  60         * destroyed as well */
  61        void            (*hpte_clear_all)(void);
  62
  63        int             (*tce_build)(struct iommu_table *tbl,
  64                                     long index,
  65                                     long npages,
  66                                     unsigned long uaddr,
  67                                     enum dma_data_direction direction,
  68                                     struct dma_attrs *attrs);
  69        void            (*tce_free)(struct iommu_table *tbl,
  70                                    long index,
  71                                    long npages);
  72        unsigned long   (*tce_get)(struct iommu_table *tbl,
  73                                    long index);
  74        void            (*tce_flush)(struct iommu_table *tbl);
  75
  76        void __iomem *  (*ioremap)(phys_addr_t addr, unsigned long size,
  77                                   unsigned long flags, void *caller);
  78        void            (*iounmap)(volatile void __iomem *token);
  79
  80#ifdef CONFIG_PM
  81        void            (*iommu_save)(void);
  82        void            (*iommu_restore)(void);
  83#endif
  84#endif /* CONFIG_PPC64 */
  85
  86        void            (*pci_dma_dev_setup)(struct pci_dev *dev);
  87        void            (*pci_dma_bus_setup)(struct pci_bus *bus);
  88
  89        /* Platform set_dma_mask and dma_get_required_mask overrides */
  90        int             (*dma_set_mask)(struct device *dev, u64 dma_mask);
  91        u64             (*dma_get_required_mask)(struct device *dev);
  92
  93        int             (*probe)(void);
  94        void            (*setup_arch)(void); /* Optional, may be NULL */
  95        void            (*init_early)(void);
  96        /* Optional, may be NULL. */
  97        void            (*show_cpuinfo)(struct seq_file *m);
  98        void            (*show_percpuinfo)(struct seq_file *m, int i);
  99
 100        void            (*init_IRQ)(void);
 101
 102        /* Return an irq, or NO_IRQ to indicate there are none pending. */
 103        unsigned int    (*get_irq)(void);
 104
 105        /* PCI stuff */
 106        /* Called after scanning the bus, before allocating resources */
 107        void            (*pcibios_fixup)(void);
 108        int             (*pci_probe_mode)(struct pci_bus *);
 109        void            (*pci_irq_fixup)(struct pci_dev *dev);
 110
 111        /* To setup PHBs when using automatic OF platform driver for PCI */
 112        int             (*pci_setup_phb)(struct pci_controller *host);
 113
 114#ifdef CONFIG_PCI_MSI
 115        int             (*msi_check_device)(struct pci_dev* dev,
 116                                            int nvec, int type);
 117        int             (*setup_msi_irqs)(struct pci_dev *dev,
 118                                          int nvec, int type);
 119        void            (*teardown_msi_irqs)(struct pci_dev *dev);
 120#endif
 121
 122        void            (*restart)(char *cmd);
 123        void            (*power_off)(void);
 124        void            (*halt)(void);
 125        void            (*panic)(char *str);
 126        void            (*cpu_die)(void);
 127
 128        long            (*time_init)(void); /* Optional, may be NULL */
 129
 130        int             (*set_rtc_time)(struct rtc_time *);
 131        void            (*get_rtc_time)(struct rtc_time *);
 132        unsigned long   (*get_boot_time)(void);
 133        unsigned char   (*rtc_read_val)(int addr);
 134        void            (*rtc_write_val)(int addr, unsigned char val);
 135
 136        void            (*calibrate_decr)(void);
 137
 138        void            (*progress)(char *, unsigned short);
 139
 140        /* Interface for platform error logging */
 141        void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 142
 143        unsigned char   (*nvram_read_val)(int addr);
 144        void            (*nvram_write_val)(int addr, unsigned char val);
 145        ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 146        ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);  
 147        ssize_t         (*nvram_size)(void);            
 148        void            (*nvram_sync)(void);
 149
 150        /* Exception handlers */
 151        int             (*system_reset_exception)(struct pt_regs *regs);
 152        int             (*machine_check_exception)(struct pt_regs *regs);
 153
 154        /* Motherboard/chipset features. This is a kind of general purpose
 155         * hook used to control some machine specific features (like reset
 156         * lines, chip power control, etc...).
 157         */
 158        long            (*feature_call)(unsigned int feature, ...);
 159
 160        /* Get legacy PCI/IDE interrupt mapping */ 
 161        int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 162        
 163        /* Get access protection for /dev/mem */
 164        pgprot_t        (*phys_mem_access_prot)(struct file *file,
 165                                                unsigned long pfn,
 166                                                unsigned long size,
 167                                                pgprot_t vma_prot);
 168
 169        /*
 170         * Function for waiting for work with reduced power in idle loop;
 171         * called with interrupts disabled.
 172         */
 173        void            (*power_save)(void);
 174
 175        /* Function to enable performance monitor counters for this
 176           platform, called once per cpu. */
 177        void            (*enable_pmcs)(void);
 178
 179        /* Set DABR for this platform, leave empty for default implemenation */
 180        int             (*set_dabr)(unsigned long dabr,
 181                                    unsigned long dabrx);
 182
 183        /* Set DAWR for this platform, leave empty for default implemenation */
 184        int             (*set_dawr)(unsigned long dawr,
 185                                    unsigned long dawrx);
 186
 187#ifdef CONFIG_PPC32     /* XXX for now */
 188        /* A general init function, called by ppc_init in init/main.c.
 189           May be NULL. */
 190        void            (*init)(void);
 191
 192        void            (*kgdb_map_scc)(void);
 193
 194        /*
 195         * optional PCI "hooks"
 196         */
 197        /* Called at then very end of pcibios_init() */
 198        void (*pcibios_after_init)(void);
 199
 200#endif /* CONFIG_PPC32 */
 201
 202        /* Called in indirect_* to avoid touching devices */
 203        int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
 204
 205        /* Called after PPC generic resource fixup to perform
 206           machine specific fixups */
 207        void (*pcibios_fixup_resources)(struct pci_dev *);
 208
 209        /* Called for each PCI bus in the system when it's probed */
 210        void (*pcibios_fixup_bus)(struct pci_bus *);
 211
 212        /* Called when pci_enable_device() is called. Returns 0 to
 213         * allow assignment/enabling of the device. */
 214        int  (*pcibios_enable_device_hook)(struct pci_dev *);
 215
 216        /* Called after scan and before resource survey */
 217        void (*pcibios_fixup_phb)(struct pci_controller *hose);
 218
 219        /* Called during PCI resource reassignment */
 220        resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
 221
 222        /* Called to shutdown machine specific hardware not already controlled
 223         * by other drivers.
 224         */
 225        void (*machine_shutdown)(void);
 226
 227#ifdef CONFIG_KEXEC
 228        void (*kexec_cpu_down)(int crash_shutdown, int secondary);
 229
 230        /* Called to do what every setup is needed on image and the
 231         * reboot code buffer. Returns 0 on success.
 232         * Provide your own (maybe dummy) implementation if your platform
 233         * claims to support kexec.
 234         */
 235        int (*machine_kexec_prepare)(struct kimage *image);
 236
 237        /* Called to perform the _real_ kexec.
 238         * Do NOT allocate memory or fail here. We are past the point of
 239         * no return.
 240         */
 241        void (*machine_kexec)(struct kimage *image);
 242#endif /* CONFIG_KEXEC */
 243
 244#ifdef CONFIG_SUSPEND
 245        /* These are called to disable and enable, respectively, IRQs when
 246         * entering a suspend state.  If NULL, then the generic versions
 247         * will be called.  The generic versions disable/enable the
 248         * decrementer along with interrupts.
 249         */
 250        void (*suspend_disable_irqs)(void);
 251        void (*suspend_enable_irqs)(void);
 252#endif
 253        int (*suspend_disable_cpu)(void);
 254
 255#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
 256        ssize_t (*cpu_probe)(const char *, size_t);
 257        ssize_t (*cpu_release)(const char *, size_t);
 258#endif
 259};
 260
 261extern void e500_idle(void);
 262extern void power4_idle(void);
 263extern void power7_idle(void);
 264extern void ppc6xx_idle(void);
 265extern void book3e_idle(void);
 266
 267/*
 268 * ppc_md contains a copy of the machine description structure for the
 269 * current platform. machine_id contains the initial address where the
 270 * description was found during boot.
 271 */
 272extern struct machdep_calls ppc_md;
 273extern struct machdep_calls *machine_id;
 274
 275#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
 276
 277#define define_machine(name)                                    \
 278        extern struct machdep_calls mach_##name;                \
 279        EXPORT_SYMBOL(mach_##name);                             \
 280        struct machdep_calls mach_##name __machine_desc =
 281
 282#define machine_is(name) \
 283        ({ \
 284                extern struct machdep_calls mach_##name \
 285                        __attribute__((weak));           \
 286                machine_id == &mach_##name; \
 287        })
 288
 289extern void probe_machine(void);
 290
 291extern char cmd_line[COMMAND_LINE_SIZE];
 292
 293#ifdef CONFIG_PPC_PMAC
 294/*
 295 * Power macintoshes have either a CUDA, PMU or SMU controlling
 296 * system reset, power, NVRAM, RTC.
 297 */
 298typedef enum sys_ctrler_kind {
 299        SYS_CTRLER_UNKNOWN = 0,
 300        SYS_CTRLER_CUDA = 1,
 301        SYS_CTRLER_PMU = 2,
 302        SYS_CTRLER_SMU = 3,
 303} sys_ctrler_t;
 304extern sys_ctrler_t sys_ctrler;
 305
 306#endif /* CONFIG_PPC_PMAC */
 307
 308
 309/* Functions to produce codes on the leds.
 310 * The SRC code should be unique for the message category and should
 311 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 312 * and (for boot & dump) should be sorted numerically in the order
 313 * the events occur.
 314 */
 315/* Print a boot progress message. */
 316void ppc64_boot_msg(unsigned int src, const char *msg);
 317
 318static inline void log_error(char *buf, unsigned int err_type, int fatal)
 319{
 320        if (ppc_md.log_error)
 321                ppc_md.log_error(buf, err_type, fatal);
 322}
 323
 324#define __define_machine_initcall(mach, fn, id) \
 325        static int __init __machine_initcall_##mach##_##fn(void) { \
 326                if (machine_is(mach)) return fn(); \
 327                return 0; \
 328        } \
 329        __define_initcall(__machine_initcall_##mach##_##fn, id);
 330
 331#define machine_core_initcall(mach, fn)         __define_machine_initcall(mach, fn, 1)
 332#define machine_core_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 1s)
 333#define machine_postcore_initcall(mach, fn)     __define_machine_initcall(mach, fn, 2)
 334#define machine_postcore_initcall_sync(mach, fn)        __define_machine_initcall(mach, fn, 2s)
 335#define machine_arch_initcall(mach, fn)         __define_machine_initcall(mach, fn, 3)
 336#define machine_arch_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 3s)
 337#define machine_subsys_initcall(mach, fn)       __define_machine_initcall(mach, fn, 4)
 338#define machine_subsys_initcall_sync(mach, fn)  __define_machine_initcall(mach, fn, 4s)
 339#define machine_fs_initcall(mach, fn)           __define_machine_initcall(mach, fn, 5)
 340#define machine_fs_initcall_sync(mach, fn)      __define_machine_initcall(mach, fn, 5s)
 341#define machine_rootfs_initcall(mach, fn)       __define_machine_initcall(mach, fn, rootfs)
 342#define machine_device_initcall(mach, fn)       __define_machine_initcall(mach, fn, 6)
 343#define machine_device_initcall_sync(mach, fn)  __define_machine_initcall(mach, fn, 6s)
 344#define machine_late_initcall(mach, fn)         __define_machine_initcall(mach, fn, 7)
 345#define machine_late_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 7s)
 346
 347#endif /* __KERNEL__ */
 348#endif /* _ASM_POWERPC_MACHDEP_H */
 349