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// 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);
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