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