#ifndef _ASM_POWERPC_MACHDEP_H #define _ASM_POWERPC_MACHDEP_H #ifdef __KERNEL__ /* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/config.h> #include <linux/seq_file.h> #include <linux/init.h> #include <linux/dma-mapping.h> #include <asm/setup.h> /* We export this macro for external modules like Alsa to know if * ppc_md.feature_call is implemented or not */ #define CONFIG_PPC_HAS_FEATURE_CALLS struct pt_regs; struct pci_bus; struct device_node; struct iommu_table; struct rtc_time; struct file; #ifdef CONFIG_KEXEC struct kimage; #endif #ifdef CONFIG_SMP struct smp_ops_t { void (*message_pass)(int target, int msg); int (*probe)(void); void (*kick_cpu)(int nr); void (*setup_cpu)(int nr); void (*take_timebase)(void); void (*give_timebase)(void); int (*cpu_enable)(unsigned int nr); int (*cpu_disable)(void); void (*cpu_die)(unsigned int nr); int (*cpu_bootable)(unsigned int nr); }; #endif struct machdep_calls { char *name; #ifdef CONFIG_PPC64 void (*hpte_invalidate)(unsigned long slot, unsigned long va, int psize, int local); long (*hpte_updatepp)(unsigned long slot, unsigned long newpp, unsigned long va, int pize, int local); void (*hpte_updateboltedpp)(unsigned long newpp, unsigned long ea, int psize); long (*hpte_insert)(unsigned long hpte_group, unsigned long va, unsigned long prpn, unsigned long rflags, unsigned long vflags, int psize); long (*hpte_remove)(unsigned long hpte_group); void (*flush_hash_range)(unsigned long number, int local); /* special for kexec, to be called in real mode, linar mapping is * destroyed as well */ void (*hpte_clear_all)(void); void (*tce_build)(struct iommu_table * tbl, long index, long npages, unsigned long uaddr, enum dma_data_direction direction); void (*tce_free)(struct iommu_table *tbl, long index, long npages); void (*tce_flush)(struct iommu_table *tbl); void (*iommu_dev_setup)(struct pci_dev *dev); void (*iommu_bus_setup)(struct pci_bus *bus); void (*irq_bus_setup)(struct pci_bus *bus); #endif /* CONFIG_PPC64 */ int (*probe)(void); void (*setup_arch)(void); void (*init_early)(void); /* Optional, may be NULL. */ void (*show_cpuinfo)(struct seq_file *m); void (*show_percpuinfo)(struct seq_file *m, int i); void (*init_IRQ)(void); int (*get_irq)(struct pt_regs *); #ifdef CONFIG_KEXEC void (*kexec_cpu_down)(int crash_shutdown, int secondary); #endif /* PCI stuff */ /* Called after scanning the bus, before allocating resources */ void (*pcibios_fixup)(void); int (*pci_probe_mode)(struct pci_bus *); void (*restart)(char *cmd); void (*power_off)(void); void (*halt)(void); void (*panic)(char *str); void (*cpu_die)(void); long (*time_init)(void); /* Optional, may be NULL */ int (*set_rtc_time)(struct rtc_time *); void (*get_rtc_time)(struct rtc_time *); unsigned long (*get_boot_time)(void); unsigned char (*rtc_read_val)(int addr); void (*rtc_write_val)(int addr, unsigned char val); void (*calibrate_decr)(void); void (*progress)(char *, unsigned short); /* Interface for platform error logging */ void (*log_error)(char *buf, unsigned int err_type, int fatal); unsigned char (*nvram_read_val)(int addr); void (*nvram_write_val)(int addr, unsigned char val); ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index); ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index); ssize_t (*nvram_size)(void); void (*nvram_sync)(void); /* Exception handlers */ int (*system_reset_exception)(struct pt_regs *regs); int (*machine_check_exception)(struct pt_regs *regs); /* Motherboard/chipset features. This is a kind of general purpose * hook used to control some machine specific features (like reset * lines, chip power control, etc...). */ long (*feature_call)(unsigned int feature, ...); /* Check availability of legacy devices like i8042 */ int (*check_legacy_ioport)(unsigned int baseport); /* Get legacy PCI/IDE interrupt mapping */ int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel); /* Get access protection for /dev/mem */ pgprot_t (*phys_mem_access_prot)(struct file *file, unsigned long pfn, unsigned long size, pgprot_t vma_prot); /* Idle loop for this platform, leave empty for default idle loop */ void (*idle_loop)(void); /* * Function for waiting for work with reduced power in idle loop; * called with interrupts disabled. */ void (*power_save)(void); /* Function to enable performance monitor counters for this platform, called once per cpu. */ void (*enable_pmcs)(void); /* Set DABR for this platform, leave empty for default implemenation */ int (*set_dabr)(unsigned long dabr); #ifdef CONFIG_PPC32 /* XXX for now */ /* A general init function, called by ppc_init in init/main.c. May be NULL. */ void (*init)(void); void (*setup_io_mappings)(void); void (*early_serial_map)(void); void (*kgdb_map_scc)(void); /* * optional PCI "hooks" */ /* Called after PPC generic resource fixup to perform machine specific fixups */ void (*pcibios_fixup_resources)(struct pci_dev *); /* Called for each PCI bus in the system when it's probed */ void (*pcibios_fixup_bus)(struct pci_bus *); /* Called when pci_enable_device() is called (initial=0) or * when a device with no assigned resource is found (initial=1). * Returns 0 to allow assignment/enabling of the device. */ int (*pcibios_enable_device_hook)(struct pci_dev *, int initial); /* For interrupt routing */ unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *); int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char); /* Called in indirect_* to avoid touching devices */ int (*pci_exclude_device)(unsigned char, unsigned char); /* Called at then very end of pcibios_init() */ void (*pcibios_after_init)(void); #endif /* CONFIG_PPC32 */ /* Called to shutdown machine specific hardware not already controlled * by other drivers. */ void (*machine_shutdown)(void); #ifdef CONFIG_KEXEC /* Called to do the minimal shutdown needed to run a kexec'd kernel * to run successfully. * XXX Should we move this one out of kexec scope? */ void (*machine_crash_shutdown)(struct pt_regs *regs); /* Called to do what every setup is needed on image and the * reboot code buffer. Returns 0 on success. * Provide your own (maybe dummy) implementation if your platform * claims to support kexec. */ int (*machine_kexec_prepare)(struct kimage *image); /* Called to handle any machine specific cleanup on image */ void (*machine_kexec_cleanup)(struct kimage *image); /* Called to perform the _real_ kexec. * Do NOT allocate memory or fail here. We are past the point of * no return. */ void (*machine_kexec)(struct kimage *image); #endif /* CONFIG_KEXEC */ }; extern void power4_idle(void); extern void ppc6xx_idle(void); /* * ppc_md contains a copy of the machine description structure for the * current platform. machine_id contains the initial address where the * description was found during boot. */ extern struct machdep_calls ppc_md; extern struct machdep_calls *machine_id; #define __machine_desc __attribute__ ((__section__ (".machine.desc"))) #define define_machine(name) \ extern struct machdep_calls mach_##name; \ EXPORT_SYMBOL(mach_##name); \ struct machdep_calls mach_##name __machine_desc = #define machine_is(name) \ ({ \ extern struct machdep_calls mach_##name \ __attribute__((weak)); \ machine_id == &mach_##name; \ }) extern void probe_machine(void); extern char cmd_line[COMMAND_LINE_SIZE]; #ifdef CONFIG_PPC_PMAC /* * Power macintoshes have either a CUDA, PMU or SMU controlling * system reset, power, NVRAM, RTC. */ typedef enum sys_ctrler_kind { SYS_CTRLER_UNKNOWN = 0, SYS_CTRLER_CUDA = 1, SYS_CTRLER_PMU = 2, SYS_CTRLER_SMU = 3, } sys_ctrler_t; extern sys_ctrler_t sys_ctrler; #endif /* CONFIG_PPC_PMAC */ extern void setup_pci_ptrs(void); #ifdef CONFIG_SMP /* Poor default implementations */ extern void __devinit smp_generic_give_timebase(void); extern void __devinit smp_generic_take_timebase(void); #endif /* CONFIG_SMP */ /* Functions to produce codes on the leds. * The SRC code should be unique for the message category and should * be limited to the lower 24 bits (the upper 8 are set by these funcs), * and (for boot & dump) should be sorted numerically in the order * the events occur. */ /* Print a boot progress message. */ void ppc64_boot_msg(unsigned int src, const char *msg); /* Print a termination message (print only -- does not stop the kernel) */ void ppc64_terminate_msg(unsigned int src, const char *msg); static inline void log_error(char *buf, unsigned int err_type, int fatal) { if (ppc_md.log_error) ppc_md.log_error(buf, err_type, fatal); } #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_MACHDEP_H */