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        /* Idle loop for this platform, leave empty for default idle loop */
 170        void            (*idle_loop)(void);
 171
 172        /*
 173         * Function for waiting for work with reduced power in idle loop;
 174         * called with interrupts disabled.
 175         */
 176        void            (*power_save)(void);
 177
 178        /* Function to enable performance monitor counters for this
 179           platform, called once per cpu. */
 180        void            (*enable_pmcs)(void);
 181
 182        /* Set DABR for this platform, leave empty for default implemenation */
 183        int             (*set_dabr)(unsigned long dabr,
 184                                    unsigned long dabrx);
 185
 186#ifdef CONFIG_PPC32     /* XXX for now */
 187        /* A general init function, called by ppc_init in init/main.c.
 188           May be NULL. */
 189        void            (*init)(void);
 190
 191        void            (*kgdb_map_scc)(void);
 192
 193        /*
 194         * optional PCI "hooks"
 195         */
 196        /* Called at then very end of pcibios_init() */
 197        void (*pcibios_after_init)(void);
 198
 199#endif /* CONFIG_PPC32 */
 200
 201        /* Called in indirect_* to avoid touching devices */
 202        int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char);
 203
 204        /* Called after PPC generic resource fixup to perform
 205           machine specific fixups */
 206        void (*pcibios_fixup_resources)(struct pci_dev *);
 207
 208        /* Called for each PCI bus in the system when it's probed */
 209        void (*pcibios_fixup_bus)(struct pci_bus *);
 210
 211        /* Called when pci_enable_device() is called. Returns 0 to
 212         * allow assignment/enabling of the device. */
 213        int  (*pcibios_enable_device_hook)(struct pci_dev *);
 214
 215        /* Called after scan and before resource survey */
 216        void (*pcibios_fixup_phb)(struct pci_controller *hose);
 217
 218        /* Called during PCI resource reassignment */
 219        resource_size_t (*pcibios_window_alignment)(struct pci_bus *, unsigned long type);
 220
 221        /* Called to shutdown machine specific hardware not already controlled
 222         * by other drivers.
 223         */
 224        void (*machine_shutdown)(void);
 225
 226#ifdef CONFIG_KEXEC
 227        void (*kexec_cpu_down)(int crash_shutdown, int secondary);
 228
 229        /* Called to do what every setup is needed on image and the
 230         * reboot code buffer. Returns 0 on success.
 231         * Provide your own (maybe dummy) implementation if your platform
 232         * claims to support kexec.
 233         */
 234        int (*machine_kexec_prepare)(struct kimage *image);
 235
 236        /* Called to perform the _real_ kexec.
 237         * Do NOT allocate memory or fail here. We are past the point of
 238         * no return.
 239         */
 240        void (*machine_kexec)(struct kimage *image);
 241#endif /* CONFIG_KEXEC */
 242
 243#ifdef CONFIG_SUSPEND
 244        /* These are called to disable and enable, respectively, IRQs when
 245         * entering a suspend state.  If NULL, then the generic versions
 246         * will be called.  The generic versions disable/enable the
 247         * decrementer along with interrupts.
 248         */
 249        void (*suspend_disable_irqs)(void);
 250        void (*suspend_enable_irqs)(void);
 251#endif
 252        int (*suspend_disable_cpu)(void);
 253
 254#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
 255        ssize_t (*cpu_probe)(const char *, size_t);
 256        ssize_t (*cpu_release)(const char *, size_t);
 257#endif
 258};
 259
 260extern void e500_idle(void);
 261extern void power4_idle(void);
 262extern void power7_idle(void);
 263extern void ppc6xx_idle(void);
 264extern void book3e_idle(void);
 265
 266/*
 267 * ppc_md contains a copy of the machine description structure for the
 268 * current platform. machine_id contains the initial address where the
 269 * description was found during boot.
 270 */
 271extern struct machdep_calls ppc_md;
 272extern struct machdep_calls *machine_id;
 273
 274#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
 275
 276#define define_machine(name)                                    \
 277        extern struct machdep_calls mach_##name;                \
 278        EXPORT_SYMBOL(mach_##name);                             \
 279        struct machdep_calls mach_##name __machine_desc =
 280
 281#define machine_is(name) \
 282        ({ \
 283                extern struct machdep_calls mach_##name \
 284                        __attribute__((weak));           \
 285                machine_id == &mach_##name; \
 286        })
 287
 288extern void probe_machine(void);
 289
 290extern char cmd_line[COMMAND_LINE_SIZE];
 291
 292#ifdef CONFIG_PPC_PMAC
 293/*
 294 * Power macintoshes have either a CUDA, PMU or SMU controlling
 295 * system reset, power, NVRAM, RTC.
 296 */
 297typedef enum sys_ctrler_kind {
 298        SYS_CTRLER_UNKNOWN = 0,
 299        SYS_CTRLER_CUDA = 1,
 300        SYS_CTRLER_PMU = 2,
 301        SYS_CTRLER_SMU = 3,
 302} sys_ctrler_t;
 303extern sys_ctrler_t sys_ctrler;
 304
 305#endif /* CONFIG_PPC_PMAC */
 306
 307
 308/* Functions to produce codes on the leds.
 309 * The SRC code should be unique for the message category and should
 310 * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 311 * and (for boot & dump) should be sorted numerically in the order
 312 * the events occur.
 313 */
 314/* Print a boot progress message. */
 315void ppc64_boot_msg(unsigned int src, const char *msg);
 316
 317static inline void log_error(char *buf, unsigned int err_type, int fatal)
 318{
 319        if (ppc_md.log_error)
 320                ppc_md.log_error(buf, err_type, fatal);
 321}
 322
 323#define __define_machine_initcall(mach,level,fn,id) \
 324        static int __init __machine_initcall_##mach##_##fn(void) { \
 325                if (machine_is(mach)) return fn(); \
 326                return 0; \
 327        } \
 328        __define_initcall(level,__machine_initcall_##mach##_##fn,id);
 329
 330#define machine_core_initcall(mach,fn)          __define_machine_initcall(mach,"1",fn,1)
 331#define machine_core_initcall_sync(mach,fn)     __define_machine_initcall(mach,"1s",fn,1s)
 332#define machine_postcore_initcall(mach,fn)      __define_machine_initcall(mach,"2",fn,2)
 333#define machine_postcore_initcall_sync(mach,fn) __define_machine_initcall(mach,"2s",fn,2s)
 334#define machine_arch_initcall(mach,fn)          __define_machine_initcall(mach,"3",fn,3)
 335#define machine_arch_initcall_sync(mach,fn)     __define_machine_initcall(mach,"3s",fn,3s)
 336#define machine_subsys_initcall(mach,fn)        __define_machine_initcall(mach,"4",fn,4)
 337#define machine_subsys_initcall_sync(mach,fn)   __define_machine_initcall(mach,"4s",fn,4s)
 338#define machine_fs_initcall(mach,fn)            __define_machine_initcall(mach,"5",fn,5)
 339#define machine_fs_initcall_sync(mach,fn)       __define_machine_initcall(mach,"5s",fn,5s)
 340#define machine_rootfs_initcall(mach,fn)        __define_machine_initcall(mach,"rootfs",fn,rootfs)
 341#define machine_device_initcall(mach,fn)        __define_machine_initcall(mach,"6",fn,6)
 342#define machine_device_initcall_sync(mach,fn)   __define_machine_initcall(mach,"6s",fn,6s)
 343#define machine_late_initcall(mach,fn)          __define_machine_initcall(mach,"7",fn,7)
 344#define machine_late_initcall_sync(mach,fn)     __define_machine_initcall(mach,"7s",fn,7s)
 345
 346#endif /* __KERNEL__ */
 347#endif /* _ASM_POWERPC_MACHDEP_H */
 348