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Diffstat (limited to 'arch/powerpc/include/asm/machdep.h')
| -rw-r--r-- | arch/powerpc/include/asm/machdep.h | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h new file mode 100644 index 000000000..bda87cbf1 --- /dev/null +++ b/arch/powerpc/include/asm/machdep.h @@ -0,0 +1,314 @@ +#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/seq_file.h> +#include <linux/init.h> +#include <linux/dma-mapping.h> +#include <linux/export.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; +struct pci_controller; +struct kimage; +struct pci_host_bridge; + +struct machdep_calls { + char *name; +#ifdef CONFIG_PPC64 + void __iomem * (*ioremap)(phys_addr_t addr, unsigned long size, + unsigned long flags, void *caller); + void (*iounmap)(volatile void __iomem *token); + +#ifdef CONFIG_PM + void (*iommu_save)(void); + void (*iommu_restore)(void); +#endif +#ifdef CONFIG_MEMORY_HOTPLUG_SPARSE + unsigned long (*memory_block_size)(void); +#endif +#endif /* CONFIG_PPC64 */ + + /* Platform set_dma_mask and dma_get_required_mask overrides */ + int (*dma_set_mask)(struct device *dev, u64 dma_mask); + u64 (*dma_get_required_mask)(struct device *dev); + + int (*probe)(void); + void (*setup_arch)(void); /* Optional, may be NULL */ + /* Optional, may be NULL. */ + void (*show_cpuinfo)(struct seq_file *m); + void (*show_percpuinfo)(struct seq_file *m, int i); + /* Returns the current operating frequency of "cpu" in Hz */ + unsigned long (*get_proc_freq)(unsigned int cpu); + + void (*init_IRQ)(void); + + /* Return an irq, or 0 to indicate there are none pending. */ + unsigned int (*get_irq)(void); + + /* PCI stuff */ + /* Called after allocating resources */ + void (*pcibios_fixup)(void); + void (*pci_irq_fixup)(struct pci_dev *dev); + int (*pcibios_root_bridge_prepare)(struct pci_host_bridge + *bridge); + + /* finds all the pci_controllers present at boot */ + void (*discover_phbs)(void); + + /* To setup PHBs when using automatic OF platform driver for PCI */ + int (*pci_setup_phb)(struct pci_controller *host); + + void __noreturn (*restart)(char *cmd); + void __noreturn (*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 *); + time64_t (*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); + int (*handle_hmi_exception)(struct pt_regs *regs); + + /* Early exception handlers called in realmode */ + int (*hmi_exception_early)(struct pt_regs *regs); + + /* Called during machine check exception to retrive fixup address. */ + bool (*mce_check_early_recovery)(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, ...); + + /* 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); + + /* + * 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 implementation */ + int (*set_dabr)(unsigned long dabr, + unsigned long dabrx); + + /* Set DAWR for this platform, leave empty for default implementation */ + int (*set_dawr)(unsigned long dawr, + unsigned long dawrx); + +#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 (*kgdb_map_scc)(void); + + /* + * optional PCI "hooks" + */ + /* Called at then very end of pcibios_init() */ + void (*pcibios_after_init)(void); + +#endif /* CONFIG_PPC32 */ + + /* Called in indirect_* to avoid touching devices */ + int (*pci_exclude_device)(struct pci_controller *, unsigned char, unsigned char); + + /* 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 after scan and before resource survey */ + void (*pcibios_fixup_phb)(struct pci_controller *hose); + + /* + * Called after device has been added to bus and + * before sysfs has been created. + */ + void (*pcibios_bus_add_device)(struct pci_dev *pdev); + + resource_size_t (*pcibios_default_alignment)(void); + +#ifdef CONFIG_PCI_IOV + void (*pcibios_fixup_sriov)(struct pci_dev *pdev); + resource_size_t (*pcibios_iov_resource_alignment)(struct pci_dev *, int resno); + int (*pcibios_sriov_enable)(struct pci_dev *pdev, u16 num_vfs); + int (*pcibios_sriov_disable)(struct pci_dev *pdev); +#endif /* CONFIG_PCI_IOV */ + + /* Called to shutdown machine specific hardware not already controlled + * by other drivers. + */ + void (*machine_shutdown)(void); + +#ifdef CONFIG_KEXEC_CORE + void (*kexec_cpu_down)(int crash_shutdown, int secondary); + + /* 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 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_CORE */ + +#ifdef CONFIG_SUSPEND + /* These are called to disable and enable, respectively, IRQs when + * entering a suspend state. If NULL, then the generic versions + * will be called. The generic versions disable/enable the + * decrementer along with interrupts. + */ + void (*suspend_disable_irqs)(void); + void (*suspend_enable_irqs)(void); +#endif + int (*suspend_disable_cpu)(void); + +#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE + ssize_t (*cpu_probe)(const char *, size_t); + ssize_t (*cpu_release)(const char *, size_t); +#endif + +#ifdef CONFIG_ARCH_RANDOM + int (*get_random_seed)(unsigned long *v); +#endif +}; + +extern void e500_idle(void); +extern void power4_idle(void); +extern void power7_idle(void); +extern void power9_idle(void); +extern void ppc6xx_idle(void); +extern void book3e_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); + +#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 */ + +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); +} + +#define __define_machine_initcall(mach, fn, id) \ + static int __init __machine_initcall_##mach##_##fn(void) { \ + if (machine_is(mach)) return fn(); \ + return 0; \ + } \ + __define_initcall(__machine_initcall_##mach##_##fn, id); + +#define machine_early_initcall(mach, fn) __define_machine_initcall(mach, fn, early) +#define machine_core_initcall(mach, fn) __define_machine_initcall(mach, fn, 1) +#define machine_core_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 1s) +#define machine_postcore_initcall(mach, fn) __define_machine_initcall(mach, fn, 2) +#define machine_postcore_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 2s) +#define machine_arch_initcall(mach, fn) __define_machine_initcall(mach, fn, 3) +#define machine_arch_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 3s) +#define machine_subsys_initcall(mach, fn) __define_machine_initcall(mach, fn, 4) +#define machine_subsys_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 4s) +#define machine_fs_initcall(mach, fn) __define_machine_initcall(mach, fn, 5) +#define machine_fs_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 5s) +#define machine_rootfs_initcall(mach, fn) __define_machine_initcall(mach, fn, rootfs) +#define machine_device_initcall(mach, fn) __define_machine_initcall(mach, fn, 6) +#define machine_device_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 6s) +#define machine_late_initcall(mach, fn) __define_machine_initcall(mach, fn, 7) +#define machine_late_initcall_sync(mach, fn) __define_machine_initcall(mach, fn, 7s) + +#endif /* __KERNEL__ */ +#endif /* _ASM_POWERPC_MACHDEP_H */ |