linux/drivers/acpi/processor_core.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2005 Intel Corporation
 * Copyright (C) 2009 Hewlett-Packard Development Company, L.P.
 *
 *	Alex Chiang <[email protected]>
 *	- Unified x86/ia64 implementations
 *
 * I/O APIC hotplug support
 *	Yinghai Lu <[email protected]>
 *	Jiang Liu <[email protected]>
 */
#include <linux/export.h>
#include <linux/acpi.h>
#include <acpi/processor.h>

static struct acpi_table_madt *get_madt_table(void)
{ … }

static int map_lapic_id(struct acpi_subtable_header *entry,
		 u32 acpi_id, phys_cpuid_t *apic_id)
{ … }

static int map_x2apic_id(struct acpi_subtable_header *entry,
		int device_declaration, u32 acpi_id, phys_cpuid_t *apic_id)
{ … }

static int map_lsapic_id(struct acpi_subtable_header *entry,
		int device_declaration, u32 acpi_id, phys_cpuid_t *apic_id)
{ … }

/*
 * Retrieve the ARM CPU physical identifier (MPIDR)
 */
static int map_gicc_mpidr(struct acpi_subtable_header *entry,
		int device_declaration, u32 acpi_id, phys_cpuid_t *mpidr)
{ … }

/*
 * Retrieve the RISC-V hartid for the processor
 */
static int map_rintc_hartid(struct acpi_subtable_header *entry,
			    int device_declaration, u32 acpi_id,
			    phys_cpuid_t *hartid)
{ … }

/*
 * Retrieve LoongArch CPU physical id
 */
static int map_core_pic_id(struct acpi_subtable_header *entry,
		int device_declaration, u32 acpi_id, phys_cpuid_t *phys_id)
{ … }

static phys_cpuid_t map_madt_entry(struct acpi_table_madt *madt,
				   int type, u32 acpi_id)
{ … }

phys_cpuid_t __init acpi_map_madt_entry(u32 acpi_id)
{ … }

int __init acpi_get_madt_revision(void)
{ … }

static phys_cpuid_t map_mat_entry(acpi_handle handle, int type, u32 acpi_id)
{ … }

phys_cpuid_t acpi_get_phys_id(acpi_handle handle, int type, u32 acpi_id)
{ … }
EXPORT_SYMBOL_GPL(…);

int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id)
{ … }

int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id)
{ … }
EXPORT_SYMBOL_GPL(…);

#ifdef CONFIG_ACPI_HOTPLUG_IOAPIC
static int get_ioapic_id(struct acpi_subtable_header *entry, u32 gsi_base,
			 u64 *phys_addr, int *ioapic_id)
{ … }

static int parse_madt_ioapic_entry(u32 gsi_base, u64 *phys_addr)
{ … }

static int parse_mat_ioapic_entry(acpi_handle handle, u32 gsi_base,
				  u64 *phys_addr)
{ … }

/**
 * acpi_get_ioapic_id - Get IOAPIC ID and physical address matching @gsi_base
 * @handle:	ACPI object for IOAPIC device
 * @gsi_base:	GSI base to match with
 * @phys_addr:	Pointer to store physical address of matching IOAPIC record
 *
 * Walk resources returned by ACPI_MAT method, then ACPI MADT table, to search
 * for an ACPI IOAPIC record matching @gsi_base.
 * Return IOAPIC id and store physical address in @phys_addr if found a match,
 * otherwise return <0.
 */
int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr)
{ … }
#endif /* CONFIG_ACPI_HOTPLUG_IOAPIC */