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 #endif
  86
  87         int             (*probe)(int platform);
  88         void            (*setup_arch)(void);
  89         void            (*init_early)(void);
  90         /* Optional, may be NULL. */
  91         void            (*show_cpuinfo)(struct seq_file *m);
  92         void            (*show_percpuinfo)(struct seq_file *m, int i);
  93
  94         void            (*init_IRQ)(void);
  95         int             (*get_irq)(struct pt_regs *);
  96 #ifdef CONFIG_KEXEC
  97         void            (*kexec_cpu_down)(int crash_shutdown, int secondary);
  98 #endif
  99
 100         /* PCI stuff */
 101         /* Called after scanning the bus, before allocating resources */
 102         void            (*pcibios_fixup)(void);
 103         int             (*pci_probe_mode)(struct pci_bus *);
 104
 105         void            (*restart)(char *cmd);
 106         void            (*power_off)(void);
 107         void            (*halt)(void);
 108         void            (*panic)(char *str);
 109         void            (*cpu_die)(void);
 110
 111         long            (*time_init)(void); /* Optional, may be NULL */
 112
 113         int             (*set_rtc_time)(struct rtc_time *);
 114         void            (*get_rtc_time)(struct rtc_time *);
 115         unsigned long   (*get_boot_time)(void);
 116         unsigned char   (*rtc_read_val)(int addr);
 117         void            (*rtc_write_val)(int addr, unsigned char val);
 118
 119         void            (*calibrate_decr)(void);
 120
 121         void            (*progress)(char *, unsigned short);
 122
 123         /* Interface for platform error logging */
 124         void            (*log_error)(char *buf, unsigned int err_type, int fatal);
 125
 126         unsigned char   (*nvram_read_val)(int addr);
 127         void            (*nvram_write_val)(int addr, unsigned char val);
 128         ssize_t         (*nvram_write)(char *buf, size_t count, loff_t *index);
 129         ssize_t         (*nvram_read)(char *buf, size_t count, loff_t *index);
 130         ssize_t         (*nvram_size)(void);
 131         void            (*nvram_sync)(void);
 132
 133         /* Exception handlers */
 134         void            (*system_reset_exception)(struct pt_regs *regs);
 135         int             (*machine_check_exception)(struct pt_regs *regs);
 136
 137         /* Motherboard/chipset features. This is a kind of general purpose
 138          * hook used to control some machine specific features (like reset
 139          * lines, chip power control, etc...).
 140          */
 141         long            (*feature_call)(unsigned int feature, ...);
 142
 143         /* Check availability of legacy devices like i8042 */
 144         int             (*check_legacy_ioport)(unsigned int baseport);
 145
 146         /* Get legacy PCI/IDE interrupt mapping */
 147         int             (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
 148
 149         /* Get access protection for /dev/mem */
 150         pgprot_t        (*phys_mem_access_prot)(struct file *file,
 151                                                 unsigned long pfn,
 152                                                 unsigned long size,
 153                                                 pgprot_t vma_prot);
 154
 155         /* Idle loop for this platform, leave empty for default idle loop */
 156         void            (*idle_loop)(void);
 157
 158         /* Function to enable performance monitor counters for this
 159            platform, called once per cpu. */
 160         void            (*enable_pmcs)(void);
 161
 162         /* Set DABR for this platform, leave empty for default implemenation */
 163         int             (*set_dabr)(unsigned long dabr);
 164
 165 #ifdef CONFIG_PPC32     /* XXX for now */
 166         /* A general init function, called by ppc_init in init/main.c.
 167            May be NULL. */
 168         void            (*init)(void);
 169
 170         void            (*idle)(void);
 171         void            (*power_save)(void);
 172
 173         void            (*heartbeat)(void);
 174         unsigned long   heartbeat_reset;
 175         unsigned long   heartbeat_count;
 176
 177         void            (*setup_io_mappings)(void);
 178
 179         void            (*early_serial_map)(void);
 180         void            (*kgdb_map_scc)(void);
 181
 182         /*
 183          * optional PCI "hooks"
 184          */
 185
 186         /* Called after PPC generic resource fixup to perform
 187            machine specific fixups */
 188         void (*pcibios_fixup_resources)(struct pci_dev *);
 189
 190         /* Called for each PCI bus in the system when it's probed */
 191         void (*pcibios_fixup_bus)(struct pci_bus *);
 192
 193         /* Called when pci_enable_device() is called (initial=0) or
 194          * when a device with no assigned resource is found (initial=1).
 195          * Returns 0 to allow assignment/enabling of the device. */
 196         int  (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
 197
 198         /* For interrupt routing */
 199         unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
 200         int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
 201
 202         /* Called in indirect_* to avoid touching devices */
 203         int (*pci_exclude_device)(unsigned char, unsigned char);
 204
 205         /* Called at then very end of pcibios_init() */
 206         void (*pcibios_after_init)(void);
 207
 208         /* this is for modules, since _machine can be a define -- Cort */
 209         int ppc_machine;
 210
 211 #ifdef CONFIG_KEXEC
 212         /* Called to shutdown machine specific hardware not already controlled
 213          * by other drivers.
 214          * XXX Should we move this one out of kexec scope?
 215          */
 216         void (*machine_shutdown)(void);
 217
 218         /* Called to do the minimal shutdown needed to run a kexec'd kernel
 219          * to run successfully.
 220          * XXX Should we move this one out of kexec scope?
 221          */
 222         void (*machine_crash_shutdown)(void);
 223
 224         /* Called to do what every setup is needed on image and the
 225          * reboot code buffer. Returns 0 on success.
 226          * Provide your own (maybe dummy) implementation if your platform
 227          * claims to support kexec.
 228          */
 229         int (*machine_kexec_prepare)(struct kimage *image);
 230
 231         /* Called to handle any machine specific cleanup on image */
 232         void (*machine_kexec_cleanup)(struct kimage *image);
 233
 234         /* Called to perform the _real_ kexec.
 235          * Do NOT allocate memory or fail here. We are past the point of
 236          * no return.
 237          */
 238         void (*machine_kexec)(struct kimage *image);
 239 #endif /* CONFIG_KEXEC */
 240 #endif /* CONFIG_PPC32 */
 241 };
 242
 243 extern void default_idle(void);
 244 extern void native_idle(void);
 245
 246 extern struct machdep_calls ppc_md;
 247 extern char cmd_line[COMMAND_LINE_SIZE];
 248
 249 #ifdef CONFIG_PPC_PMAC
 250 /*
 251  * Power macintoshes have either a CUDA, PMU or SMU controlling
 252  * system reset, power, NVRAM, RTC.
 253  */
 254 typedef enum sys_ctrler_kind {
 255         SYS_CTRLER_UNKNOWN = 0,
 256         SYS_CTRLER_CUDA = 1,
 257         SYS_CTRLER_PMU = 2,
 258         SYS_CTRLER_SMU = 3,
 259 } sys_ctrler_t;
 260 extern sys_ctrler_t sys_ctrler;
 261
 262 #endif /* CONFIG_PPC_PMAC */
 263
 264 extern void setup_pci_ptrs(void);
 265
 266 #ifdef CONFIG_SMP
 267 /* Poor default implementations */
 268 extern void __devinit smp_generic_give_timebase(void);
 269 extern void __devinit smp_generic_take_timebase(void);
 270 #endif /* CONFIG_SMP */
 271
 272
 273 /* Functions to produce codes on the leds.
 274  * The SRC code should be unique for the message category and should
 275  * be limited to the lower 24 bits (the upper 8 are set by these funcs),
 276  * and (for boot & dump) should be sorted numerically in the order
 277  * the events occur.
 278  */
 279 /* Print a boot progress message. */
 280 void ppc64_boot_msg(unsigned int src, const char *msg);
 281 /* Print a termination message (print only -- does not stop the kernel) */
 282 void ppc64_terminate_msg(unsigned int src, const char *msg);
 283
 284 static inline void log_error(char *buf, unsigned int err_type, int fatal)
 285 {
 286         if (ppc_md.log_error)
 287                 ppc_md.log_error(buf, err_type, fatal);
 288 }
 289
 290 #endif /* __KERNEL__ */
 291 #endif /* _ASM_POWERPC_MACHDEP_H */