LXR linux/arch/x86/kernel/x86

   1/*
   2 * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
   3 *
   4 *  For licencing details see kernel-base/COPYING
   5 */
   6#include <linux/init.h>
   7#include <linux/ioport.h>
   8#include <linux/export.h>
   9#include <linux/pci.h>
  10
  11#include <asm/bios_ebda.h>
  12#include <asm/paravirt.h>
  13#include <asm/pci_x86.h>
  14#include <asm/mpspec.h>
  15#include <asm/setup.h>
  16#include <asm/apic.h>
  17#include <asm/e820/api.h>
  18#include <asm/time.h>
  19#include <asm/irq.h>
  20#include <asm/io_apic.h>
  21#include <asm/hpet.h>
  22#include <asm/pat.h>
  23#include <asm/tsc.h>
  24#include <asm/iommu.h>
  25#include <asm/mach_traps.h>
  26
  27void x86_init_noop(void) { }
  28void __init x86_init_uint_noop(unsigned int unused) { }
  29int __init iommu_init_noop(void) { return 0; }
  30void iommu_shutdown_noop(void) { }
  31
  32/*
  33 * The platform setup functions are preset with the default functions
  34 * for standard PC hardware.
  35 */
  36struct x86_init_ops x86_init __initdata = {
  37
  38        .resources = {
  39                .probe_roms             = probe_roms,
  40                .reserve_resources      = reserve_standard_io_resources,
  41                .memory_setup           = e820__memory_setup_default,
  42        },
  43
  44        .mpparse = {
  45                .mpc_record             = x86_init_uint_noop,
  46                .setup_ioapic_ids       = x86_init_noop,
  47                .mpc_apic_id            = default_mpc_apic_id,
  48                .smp_read_mpc_oem       = default_smp_read_mpc_oem,
  49                .mpc_oem_bus_info       = default_mpc_oem_bus_info,
  50                .find_smp_config        = default_find_smp_config,
  51                .get_smp_config         = default_get_smp_config,
  52        },
  53
  54        .irqs = {
  55                .pre_vector_init        = init_ISA_irqs,
  56                .intr_init              = native_init_IRQ,
  57                .trap_init              = x86_init_noop,
  58        },
  59
  60        .oem = {
  61                .arch_setup             = x86_init_noop,
  62                .banner                 = default_banner,
  63        },
  64
  65        .paging = {
  66                .pagetable_init         = native_pagetable_init,
  67        },
  68
  69        .timers = {
  70                .setup_percpu_clockev   = setup_boot_APIC_clock,
  71                .timer_init             = hpet_time_init,
  72                .wallclock_init         = x86_init_noop,
  73        },
  74
  75        .iommu = {
  76                .iommu_init             = iommu_init_noop,
  77        },
  78
  79        .pci = {
  80                .init                   = x86_default_pci_init,
  81                .init_irq               = x86_default_pci_init_irq,
  82                .fixup_irqs             = x86_default_pci_fixup_irqs,
  83        },
  84};
  85
  86struct x86_cpuinit_ops x86_cpuinit = {
  87        .early_percpu_clock_init        = x86_init_noop,
  88        .setup_percpu_clockev           = setup_secondary_APIC_clock,
  89};
  90
  91static void default_nmi_init(void) { };
  92
  93struct x86_platform_ops x86_platform __ro_after_init = {
  94        .calibrate_cpu                  = native_calibrate_cpu,
  95        .calibrate_tsc                  = native_calibrate_tsc,
  96        .get_wallclock                  = mach_get_cmos_time,
  97        .set_wallclock                  = mach_set_rtc_mmss,
  98        .iommu_shutdown                 = iommu_shutdown_noop,
  99        .is_untracked_pat_range         = is_ISA_range,
 100        .nmi_init                       = default_nmi_init,
 101        .get_nmi_reason                 = default_get_nmi_reason,
 102        .save_sched_clock_state         = tsc_save_sched_clock_state,
 103        .restore_sched_clock_state      = tsc_restore_sched_clock_state,
 104};
 105
 106EXPORT_SYMBOL_GPL(x86_platform);
 107
 108#if defined(CONFIG_PCI_MSI)
 109struct x86_msi_ops x86_msi __ro_after_init = {
 110        .setup_msi_irqs         = native_setup_msi_irqs,
 111        .teardown_msi_irq       = native_teardown_msi_irq,
 112        .teardown_msi_irqs      = default_teardown_msi_irqs,
 113        .restore_msi_irqs       = default_restore_msi_irqs,
 114};
 115
 116/* MSI arch specific hooks */
 117int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 118{
 119        return x86_msi.setup_msi_irqs(dev, nvec, type);
 120}
 121
 122void arch_teardown_msi_irqs(struct pci_dev *dev)
 123{
 124        x86_msi.teardown_msi_irqs(dev);
 125}
 126
 127void arch_teardown_msi_irq(unsigned int irq)
 128{
 129        x86_msi.teardown_msi_irq(irq);
 130}
 131
 132void arch_restore_msi_irqs(struct pci_dev *dev)
 133{
 134        x86_msi.restore_msi_irqs(dev);
 135}
 136#endif
 137
 138struct x86_io_apic_ops x86_io_apic_ops __ro_after_init = {
 139        .read                   = native_io_apic_read,
 140        .disable                = native_disable_io_apic,
 141};
 142