linux_dsm_epyc7002/arch/x86/include/asm/x86_init.h

#ifndef _ASM_X86_PLATFORM_H
#define _ASM_X86_PLATFORM_H

#include <asm/pgtable_types.h>
#include <asm/bootparam.h>

struct mpc_bus;
struct mpc_cpu;
struct mpc_table;

/**
 * struct x86_init_mpparse - platform specific mpparse ops
 * @mpc_record:			platform specific mpc record accounting
 * @setup_ioapic_ids:		platform specific ioapic id override
 * @mpc_apic_id:		platform specific mpc apic id assignment
 * @smp_read_mpc_oem:		platform specific oem mpc table setup
 * @mpc_oem_pci_bus:		platform specific pci bus setup (default NULL)
 * @mpc_oem_bus_info:		platform specific mpc bus info
 * @find_smp_config:		find the smp configuration
 * @get_smp_config:		get the smp configuration
 */
struct x86_init_mpparse {
	void (*mpc_record)(unsigned int mode);
	void (*setup_ioapic_ids)(void);
	int (*mpc_apic_id)(struct mpc_cpu *m);
	void (*smp_read_mpc_oem)(struct mpc_table *mpc);
	void (*mpc_oem_pci_bus)(struct mpc_bus *m);
	void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
	void (*find_smp_config)(void);
	void (*get_smp_config)(unsigned int early);
};

/**
 * struct x86_init_resources - platform specific resource related ops
 * @probe_roms:			probe BIOS roms
 * @reserve_resources:		reserve the standard resources for the
 *				platform
 * @memory_setup:		platform specific memory setup
 *
 */
struct x86_init_resources {
	void (*probe_roms)(void);
	void (*reserve_resources)(void);
	char *(*memory_setup)(void);
};

/**
 * struct x86_init_irqs - platform specific interrupt setup
 * @pre_vector_init:		init code to run before interrupt vectors
 *				are set up.
 * @intr_init:			interrupt init code
 * @trap_init:			platform specific trap setup
 */
struct x86_init_irqs {
	void (*pre_vector_init)(void);
	void (*intr_init)(void);
	void (*trap_init)(void);
};

/**
 * struct x86_init_oem - oem platform specific customizing functions
 * @arch_setup:			platform specific architecure setup
 * @banner:			print a platform specific banner
 */
struct x86_init_oem {
	void (*arch_setup)(void);
	void (*banner)(void);
};

/**
 * struct x86_init_paging - platform specific paging functions
 * @pagetable_setup_start:	platform specific pre paging_init() call
 * @pagetable_setup_done:	platform specific post paging_init() call
 */
struct x86_init_paging {
	void (*pagetable_setup_start)(pgd_t *base);
	void (*pagetable_setup_done)(pgd_t *base);
};

/**
 * struct x86_init_timers - platform specific timer setup
 * @setup_perpcu_clockev:	set up the per cpu clock event device for the
 *				boot cpu
 * @tsc_pre_init:		platform function called before TSC init
 * @timer_init:			initialize the platform timer (default PIT/HPET)
 */
struct x86_init_timers {
	void (*setup_percpu_clockev)(void);
	void (*tsc_pre_init)(void);
	void (*timer_init)(void);
};

/**
 * struct x86_init_iommu - platform specific iommu setup
 * @iommu_init:			platform specific iommu setup
 */
struct x86_init_iommu {
	int (*iommu_init)(void);
};

/**
 * struct x86_init_ops - functions for platform specific setup
 *
 */
struct x86_init_ops {
	struct x86_init_resources	resources;
	struct x86_init_mpparse		mpparse;
	struct x86_init_irqs		irqs;
	struct x86_init_oem		oem;
	struct x86_init_paging		paging;
	struct x86_init_timers		timers;
	struct x86_init_iommu		iommu;
};

/**
 * struct x86_cpuinit_ops - platform specific cpu hotplug setups
 * @setup_percpu_clockev:	set up the per cpu clock event device
 */
struct x86_cpuinit_ops {
	void (*setup_percpu_clockev)(void);
};

/**
 * struct x86_platform_ops - platform specific runtime functions
 * @calibrate_tsc:		calibrate TSC
 * @get_wallclock:		get time from HW clock like RTC etc.
 * @set_wallclock:		set time back to HW clock
 * @is_untracked_pat_range	exclude from PAT logic
 */
struct x86_platform_ops {
	unsigned long (*calibrate_tsc)(void);
	unsigned long (*get_wallclock)(void);
	int (*set_wallclock)(unsigned long nowtime);
	void (*iommu_shutdown)(void);
	bool (*is_untracked_pat_range)(u64 start, u64 end);
};

extern struct x86_init_ops x86_init;
extern struct x86_cpuinit_ops x86_cpuinit;
extern struct x86_platform_ops x86_platform;

extern void x86_init_noop(void);
extern void x86_init_uint_noop(unsigned int unused);

#endif