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