Quelle  apic_flat_64.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright 2004 James Cleverdon, IBM.
 *
 * Flat APIC subarch code.
 *
 * Hacked for x86-64 by James Cleverdon from i386 architecture code by
 * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
 * James Cleverdon.
 */
#include <linux/export.h>

#include <asm/apic.h>

#include "local.h"

static u32 physflat_get_apic_id(u32 x)
{
 return (x >> 24) & 0xFF;
}

static int physflat_probe(void)
{
 return 1;
}

static int physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
 return 1;
}

static struct apic apic_physflat __ro_after_init = {

 .name    = "physical flat",
 .probe    = physflat_probe,
 .acpi_madt_oem_check  = physflat_acpi_madt_oem_check,

 .dest_mode_logical  = false,

 .disable_esr   = 0,

 .cpu_present_to_apicid  = default_cpu_present_to_apicid,

 .max_apic_id   = 0xFE,
 .get_apic_id   = physflat_get_apic_id,

 .calc_dest_apicid  = apic_default_calc_apicid,

 .send_IPI   = default_send_IPI_single_phys,
 .send_IPI_mask   = default_send_IPI_mask_sequence_phys,
 .send_IPI_mask_allbutself = default_send_IPI_mask_allbutself_phys,
 .send_IPI_allbutself  = default_send_IPI_allbutself,
 .send_IPI_all   = default_send_IPI_all,
 .send_IPI_self   = default_send_IPI_self,
 .nmi_to_offline_cpu  = true,

 .read    = native_apic_mem_read,
 .write    = native_apic_mem_write,
 .eoi    = native_apic_mem_eoi,
 .icr_read   = native_apic_icr_read,
 .icr_write   = native_apic_icr_write,
 .wait_icr_idle   = apic_mem_wait_icr_idle,
 .safe_wait_icr_idle  = apic_mem_wait_icr_idle_timeout,
};
apic_driver(apic_physflat);

struct apic *apic __ro_after_init = &apic_physflat;
EXPORT_SYMBOL_GPL(apic);