/arch/powerpc/include/asm/machdep.h
http://github.com/mirrors/linux · C Header · 300 lines · 173 code · 58 blank · 69 comment · 3 complexity · cc02746f111da8893b469e7d69427afa MD5 · raw file
- /* SPDX-License-Identifier: GPL-2.0-or-later */
- #ifndef _ASM_POWERPC_MACHDEP_H
- #define _ASM_POWERPC_MACHDEP_H
- #ifdef __KERNEL__
- #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
- #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 */
- void (*dma_set_mask)(struct device *dev, u64 dma_mask);
- 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);
- /* 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);
- long (*machine_check_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 */