x86_init.c

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/*
 * Copyright (C) 2009 Thomas Gleixner <[email protected]>
 *
 *  For licencing details see kernel-base/COPYING
 */
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/pci.h>

#include <asm/bios_ebda.h>
#include <asm/paravirt.h>
#include <asm/pci_x86.h>
#include <asm/pci.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
#include <asm/apic.h>
#include <asm/e820.h>
#include <asm/time.h>
#include <asm/irq.h>
#include <asm/io_apic.h>
#include <asm/pat.h>
#include <asm/tsc.h>
#include <asm/iommu.h>
#include <asm/mach_traps.h>

void __cpuinit x86_init_noop(void) { }
void __init x86_init_uint_noop(unsigned int unused) { }
int __init iommu_init_noop(void) { return 0; }
void iommu_shutdown_noop(void) { }

/*
 * The platform setup functions are preset with the default functions
 * for standard PC hardware.
 */
struct x86_init_ops x86_init __initdata = {

    .resources = {
        .probe_roms     = probe_roms,
        .reserve_resources  = reserve_standard_io_resources,
        .memory_setup       = default_machine_specific_memory_setup,
    },

    .mpparse = {
        .mpc_record     = x86_init_uint_noop,
        .setup_ioapic_ids   = x86_init_noop,
        .mpc_apic_id        = default_mpc_apic_id,
        .smp_read_mpc_oem   = default_smp_read_mpc_oem,
        .mpc_oem_bus_info   = default_mpc_oem_bus_info,
        .find_smp_config    = default_find_smp_config,
        .get_smp_config     = default_get_smp_config,
    },

    .irqs = {
        .pre_vector_init    = init_ISA_irqs,
        .intr_init      = native_init_IRQ,
        .trap_init      = x86_init_noop,
    },

    .oem = {
        .arch_setup     = x86_init_noop,
        .banner         = default_banner,
    },

    .mapping = {
        .pagetable_reserve      = native_pagetable_reserve,
    },

    .paging = {
        .pagetable_init     = native_pagetable_init,
    },

    .timers = {
        .setup_percpu_clockev   = setup_boot_APIC_clock,
        .tsc_pre_init       = x86_init_noop,
        .timer_init     = hpet_time_init,
        .wallclock_init     = x86_init_noop,
    },

    .iommu = {
        .iommu_init     = iommu_init_noop,
    },

    .pci = {
        .init           = x86_default_pci_init,
        .init_irq       = x86_default_pci_init_irq,
        .fixup_irqs     = x86_default_pci_fixup_irqs,
    },
};

struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
    .early_percpu_clock_init    = x86_init_noop,
    .setup_percpu_clockev       = setup_secondary_APIC_clock,
};

static void default_nmi_init(void) { };
static int default_i8042_detect(void) { return 1; };

struct x86_platform_ops x86_platform = {
    .calibrate_tsc          = native_calibrate_tsc,
    .get_wallclock          = mach_get_cmos_time,
    .set_wallclock          = mach_set_rtc_mmss,
    .iommu_shutdown         = iommu_shutdown_noop,
    .is_untracked_pat_range     = is_ISA_range,
    .nmi_init           = default_nmi_init,
    .get_nmi_reason         = default_get_nmi_reason,
    .i8042_detect           = default_i8042_detect,
    .save_sched_clock_state     = tsc_save_sched_clock_state,
    .restore_sched_clock_state  = tsc_restore_sched_clock_state,
};

EXPORT_SYMBOL_GPL(x86_platform);
struct x86_msi_ops x86_msi = {
    .setup_msi_irqs = native_setup_msi_irqs,
    .teardown_msi_irq = native_teardown_msi_irq,
    .teardown_msi_irqs = default_teardown_msi_irqs,
    .restore_msi_irqs = default_restore_msi_irqs,
};

struct x86_io_apic_ops x86_io_apic_ops = {
    .init   = native_io_apic_init_mappings,
    .read   = native_io_apic_read,
    .write  = native_io_apic_write,
    .modify = native_io_apic_modify,
};