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;
  32struct pci_host_bridge;
  33
  34struct machdep_calls {
  35        char            *name;
  36#ifdef CONFIG_PPC64
  37        void            (*hpte_invalidate)(unsigned long slot,
  38                                           unsigned long vpn,
  39                                           int bpsize, int apsize,
  40                                           int ssize, int local);
  41        long            (*hpte_updatepp)(unsigned long slot, 
  42                                         unsigned long newpp, 
  43                                         unsigned long vpn,
  44                                         int bpsize, int apsize,
  45                                         int ssize, int local);
  46        void            (*hpte_updateboltedpp)(unsigned long newpp, 
  47                                               unsigned long ea,
  48                                               int psize, int ssize);
  49        long            (*hpte_insert)(unsigned long hpte_group,
  50                                       unsigned long vpn,
  51                                       unsigned long prpn,
  52                                       unsigned long rflags,
  53                                       unsigned long vflags,
  54                                       int psize, int apsize,
  55                                       int ssize);
  56        long            (*hpte_remove)(unsigned long hpte_group);
  57        void            (*hpte_removebolted)(unsigned long ea,
  58                                             int psize, int ssize);
  59        void            (*flush_hash_range)(unsigned long number, int local);
  60        void            (*hugepage_invalidate)(struct mm_struct *mm,
  61                                               unsigned char *hpte_slot_array,
  62                                               unsigned long addr, int psize);
  63
  64        /* special for kexec, to be called in real mode, linear mapping is
  65         * destroyed as well */
  66        void            (*hpte_clear_all)(void);
  67
  68        int             (*tce_build)(struct iommu_table *tbl,
  69                                     long index,
  70                                     long npages,
  71                                     unsigned long uaddr,
  72                                     enum dma_data_direction direction,
  73                                     struct dma_attrs *attrs);
  74        void            (*tce_free)(struct iommu_table *tbl,
  75                                    long index,
  76                                    long npages);
  77        unsigned long   (*tce_get)(struct iommu_table *tbl,
  78                                    long index);
  79        void            (*tce_flush)(struct iommu_table *tbl);
  80
  81        /* _rm versions are for real mode use only */
  82        int             (*tce_build_rm)(struct iommu_table *tbl,
  83                                     long index,
  84                                     long npages,
  85                                     unsigned long uaddr,
  86                                     enum dma_data_direction direction,
  87                                     struct dma_attrs *attrs);
  88        void            (*tce_free_rm)(struct iommu_table *tbl,
  89                                    long index,
  90                                    long npages);
  91        void            (*tce_flush_rm)(struct iommu_table *tbl);
  92
  93        void __iomem *  (*ioremap)(phys_addr_t addr, unsigned long size,
  94                                   unsigned long flags, void *caller);
  95        void            (*iounmap)(volatile void __iomem *token);
  96
  97#ifdef CONFIG_PM
  98        void            (*iommu_save)(void);
  99        void            (*iommu_restore)(void);
 100#endif
 101#endif /* CONFIG_PPC64 */
 102
 103        void            (*pci_dma_dev_setup)(struct pci_dev *dev);
 104        void            (*pci_dma_bus_setup)(struct pci_bus *bus);
 105
 106        /* Platform set_dma_mask and dma_get_required_mask overrides */
 107        int             (*dma_set_mask)(struct device *dev, u64 dma_mask);
 108        u64             (*dma_get_required_mask)(struct device *dev);
 109
 110        int             (*probe)(void);
 111        void            (*setup_arch)(void); /* Optional, may be NULL */
 112        void            (*init_early)(void);
 113        /* Optional, may be NULL. */
 114        void            (*show_cpuinfo)(struct seq_file *m);
 115        void            (*show_percpuinfo)(struct seq_file *m, int i);
 116
 117        void            (*init_IRQ)(void);
 118
 119        /* Return an irq, or NO_IRQ to indicate there are none pending. */
 120        unsigned int    (*get_irq)(void);
 121
 122        /* PCI stuff */
 123        /* Called after scanning the bus, before allocating resources */
 124        void            (*pcibios_fixup)(void);
 125        int             (*pci_probe_mode)(struct pci_bus *);
 126        void            (*pci_irq_fixup)(struct pci_dev *dev);
 127        int             (*pcibios_root_bridge_prepare)(struct pci_host_bridge
 128                                *bridge);
 129
 130        /* To setup PHBs when using automatic OF platform driver for PCI */
 131        int             (*pci_setup_phb)(struct pci_controller *host);
 132
 133#ifdef CONFIG_PCI_MSI
 134        int             (*msi_check_device)(struct pci_dev* dev,
 135                                            int nvec, int type);
 136        int             (*setup_msi_irqs)(struct pci_dev *dev,
 137                                          int nvec, int type);
 138        void            (*teardown_msi_irqs)(struct pci_dev *dev);
 139#endif
 140
 141        void            (*restart)(char *cmd);
 142        void            (*power_off)(void);
 143        void            (*halt)(void);
 144        void            (*panic)(char *str);
 145        void            (*cpu_die)(void);
 146
 147        long            (*time_init)(void); /* Optional, may be NULL */
 148
 149        int             (*set_rtc_time)(struct rtc_time *);
 150        void            (*get_rtc_time)(struct rtc_time *);
 151        unsigned long   (*get_boot_time)(void);
 152        unsigned char   (*rtc_read_val)(int addr);
 153        void            (*rtc_write_val)(int addr, unsigned char val);
 154
 155        void            (*calibrate_decr)(void);
 156
 157        void            (*progress)(char *, unsigned short);
 158
 159        /* Interface for platform error logging */
 160        void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 161
 162        unsigned char   (*nvram_read_val)(int addr);
 163        void            (*nvram_write_val)(int addr, unsigned char val);
 164        ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 165        ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);  
 166        ssize_t         (*nvram_size)(void);            
 167        void            (*nvram_sync)(void);
 168
 169        /* Exception handlers */
 170        int             (*system_reset_exception)(struct pt_regs *regs);
 171        int             (*machine_check_exception)(struct pt_regs *regs);
 172
 173        /* Motherboard/chipset features. This is a kind of general purpose
 174         * hook used to control some machine specific features (like reset
 175         * lines, chip power control, etc...).
 176         */
 177        long            (*feature_call)(unsigned int feature, ...);
 178
 179        /* Get legacy PCI/IDE interrupt mapping */ 
 180        int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 181        
 182        /* Get access protection for /dev/mem */
 183        pgprot_t        (*phys_mem_access_prot)(struct file *file,
 184                                                unsigned long pfn,
 185                                                unsigned long size,
 186                                                pgprot_t vma_prot);
 187
 188        /*
 189         * Function for waiting for work with reduced power in idle loop;
 190         * called with interrupts disabled.
 191         */
 192        void            (*power_save)(void);
 193
 194        /* Function to enable performance monitor counters for this
 195           platform, called once per cpu. */
 196        void            (*enable_pmcs)(void);
 197
 198        /* Set DABR for this platform, leave empty for default implemenation */
 199        int             (*set_dabr)(unsigned long dabr,
 200                                    unsigned long dabrx);
 201
 202        /* Set DAWR for this platform, leave empty for default implemenation */
 203        int             (*set_dawr)(unsigned long dawr,
 204                                    unsigned long dawrx);
 205
 206#ifdef CONFIG_PPC32     /* XXX for now */
 207        /* A general init function, called by ppc_init in init/main.c.
 208           May be NULL. */
 209        void            (*init)(void);
 210
 211        void            (*kgdb_map_scc)(void);
 212
 213        /*
 214         * optional PCI "hooks"
 215         */
 216        /* Called at then very end of pcibios_init() */
 217        void (*pcibios_after_init)(void);
 218
 219#endif /* CONFIG_PPC32 */
 220
 221        /* Called in indirect_* to avoid touching devices */
 222        int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
 223
 224        /* Called after PPC generic resource fixup to perform
 225           machine specific fixups */
 226        void (*pcibios_fixup_resources)(struct pci_dev *);
 227
 228        /* Called for each PCI bus in the system when it's probed */
 229        void (*pcibios_fixup_bus)(struct pci_bus *);
 230
 231        /* Called when pci_enable_device() is called. Returns 0 to
 232         * allow assignment/enabling of the device. */
 233        int  (*pcibios_enable_device_hook)(struct pci_dev *);
 234
 235        /* Called after scan and before resource survey */
 236        void (*pcibios_fixup_phb)(struct pci_controller *hose);
 237
 238        /* Called during PCI resource reassignment */
 239        resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
 240
 241        /* Called to shutdown machine specific hardware not already controlled
 242         * by other drivers.
 243         */
 244        void (*machine_shutdown)(void);
 245
 246#ifdef CONFIG_KEXEC
 247        void (*kexec_cpu_down)(int crash_shutdown, int secondary);
 248
 249        /* Called to do what every setup is needed on image and the
 250         * reboot code buffer. Returns 0 on success.
 251         * Provide your own (maybe dummy) implementation if your platform
 252         * claims to support kexec.
 253         */
 254        int (*machine_kexec_prepare)(struct kimage *image);
 255
 256        /* Called to perform the _real_ kexec.
 257         * Do NOT allocate memory or fail here. We are past the point of
 258         * no return.
 259         */
 260        void (*machine_kexec)(struct kimage *image);
 261#endif /* CONFIG_KEXEC */
 262
 263#ifdef CONFIG_SUSPEND
 264        /* These are called to disable and enable, respectively, IRQs when
 265         * entering a suspend state.  If NULL, then the generic versions
 266         * will be called.  The generic versions disable/enable the
 267         * decrementer along with interrupts.
 268         */
 269        void (*suspend_disable_irqs)(void);
 270        void (*suspend_enable_irqs)(void);
 271#endif
 272        int (*suspend_disable_cpu)(void);
 273
 274#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
 275        ssize_t (*cpu_probe)(const char *, size_t);
 276        ssize_t (*cpu_release)(const char *, size_t);
 277#endif
 278
 279#ifdef CONFIG_ARCH_RANDOM
 280        int (*get_random_long)(unsigned long *v);
 281#endif
 282};
 283
 284extern void e500_idle(void);
 285extern void power4_idle(void);
 286extern void power7_idle(void);
 287extern void ppc6xx_idle(void);
 288extern void book3e_idle(void);
 289
 290/*
 291 * ppc_md contains a copy of the machine description structure for the
 292 * current platform. machine_id contains the initial address where the
 293 * description was found during boot.
 294 */
 295extern struct machdep_calls ppc_md;
 296extern struct machdep_calls *machine_id;
 297
 298#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
 299
 300#define define_machine(name)                                    \
 301        extern struct machdep_calls mach_##name;                \
 302        EXPORT_SYMBOL(mach_##name);                             \
 303        struct machdep_calls mach_##name __machine_desc =
 304
 305#define machine_is(name) \
 306        ({ \
 307                extern struct machdep_calls mach_##name \
 308                        __attribute__((weak));           \
 309                machine_id == &mach_##name; \
 310        })
 311
 312extern void probe_machine(void);
 313
 314extern char cmd_line[COMMAND_LINE_SIZE];
 315
 316#ifdef CONFIG_PPC_PMAC
 317/*
 318 * Power macintoshes have either a CUDA, PMU or SMU controlling
 319 * system reset, power, NVRAM, RTC.
 320 */
 321typedef enum sys_ctrler_kind {
 322        SYS_CTRLER_UNKNOWN = 0,
 323        SYS_CTRLER_CUDA = 1,
 324        SYS_CTRLER_PMU = 2,
 325        SYS_CTRLER_SMU = 3,
 326} sys_ctrler_t;
 327extern sys_ctrler_t sys_ctrler;
 328
 329#endif /* CONFIG_PPC_PMAC */
 330
 331
 332/* Functions to produce codes on the leds.
 333 * The SRC code should be unique for the message category and should
 334 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 335 * and (for boot & dump) should be sorted numerically in the order
 336 * the events occur.
 337 */
 338/* Print a boot progress message. */
 339void ppc64_boot_msg(unsigned int src, const char *msg);
 340
 341static inline void log_error(char *buf, unsigned int err_type, int fatal)
 342{
 343        if (ppc_md.log_error)
 344                ppc_md.log_error(buf, err_type, fatal);
 345}
 346
 347#define __define_machine_initcall(mach, fn, id) \
 348        static int __init __machine_initcall_##mach##_##fn(void) { \
 349                if (machine_is(mach)) return fn(); \
 350                return 0; \
 351        } \
 352        __define_initcall(__machine_initcall_##mach##_##fn, id);
 353
 354#define machine_core_initcall(mach, fn)         __define_machine_initcall(mach, fn, 1)
 355#define machine_core_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 1s)
 356#define machine_postcore_initcall(mach, fn)     __define_machine_initcall(mach, fn, 2)
 357#define machine_postcore_initcall_sync(mach, fn)        __define_machine_initcall(mach, fn, 2s)
 358#define machine_arch_initcall(mach, fn)         __define_machine_initcall(mach, fn, 3)
 359#define machine_arch_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 3s)
 360#define machine_subsys_initcall(mach, fn)       __define_machine_initcall(mach, fn, 4)
 361#define machine_subsys_initcall_sync(mach, fn)  __define_machine_initcall(mach, fn, 4s)
 362#define machine_fs_initcall(mach, fn)           __define_machine_initcall(mach, fn, 5)
 363#define machine_fs_initcall_sync(mach, fn)      __define_machine_initcall(mach, fn, 5s)
 364#define machine_rootfs_initcall(mach, fn)       __define_machine_initcall(mach, fn, rootfs)
 365#define machine_device_initcall(mach, fn)       __define_machine_initcall(mach, fn, 6)
 366#define machine_device_initcall_sync(mach, fn)  __define_machine_initcall(mach, fn, 6s)
 367#define machine_late_initcall(mach, fn)         __define_machine_initcall(mach, fn, 7)
 368#define machine_late_initcall_sync(mach, fn)    __define_machine_initcall(mach, fn, 7s)
 369
 370#endif /* __KERNEL__ */
 371#endif /* _ASM_POWERPC_MACHDEP_H */
 372