3c726f8dee
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel base page size to 64K. The resulting kernel still boots on any hardware. On current machines with 4K pages support only, the kernel will maintain 16 "subpages" for each 64K page transparently. Note that while real 64K capable HW has been tested, the current patch will not enable it yet as such hardware is not released yet, and I'm still verifying with the firmware architects the proper to get the information from the newer hypervisors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
288 lines
8.4 KiB
C
288 lines
8.4 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/config.h>
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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_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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#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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int (*set_dabr)(unsigned long dabr);
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#endif
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int (*probe)(int platform);
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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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void (*cpu_irq_down)(int secondary);
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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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void (*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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/* 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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#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 (*idle)(void);
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void (*power_save)(void);
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void (*heartbeat)(void);
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unsigned long heartbeat_reset;
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unsigned long heartbeat_count;
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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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/* this is for modules, since _machine can be a define -- Cort */
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int ppc_machine;
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#ifdef CONFIG_KEXEC
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/* Called to shutdown machine specific hardware not already controlled
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* by other drivers.
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* XXX Should we move this one out of kexec scope?
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*/
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void (*machine_shutdown)(void);
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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)(void);
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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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#endif /* CONFIG_PPC32 */
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};
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extern void default_idle(void);
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extern void native_idle(void);
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extern struct machdep_calls ppc_md;
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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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