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/acpi.h>
  12#include <asm/bios_ebda.h>
  13#include <asm/paravirt.h>
  14#include <asm/pci_x86.h>
  15#include <asm/mpspec.h>
  16#include <asm/setup.h>
  17#include <asm/apic.h>
  18#include <asm/e820/api.h>
  19#include <asm/time.h>
  20#include <asm/irq.h>
  21#include <asm/io_apic.h>
  22#include <asm/hpet.h>
  23#include <asm/pat.h>
  24#include <asm/tsc.h>
  25#include <asm/iommu.h>
  26#include <asm/mach_traps.h>
  27
  28void x86_init_noop(void) { }
  29void __init x86_init_uint_noop(unsigned int unused) { }
  30static int __init iommu_init_noop(void) { return 0; }
  31static void iommu_shutdown_noop(void) { }
  32static bool __init bool_x86_init_noop(void) { return false; }
  33static void x86_op_int_noop(int cpu) { }
  34static u64 u64_x86_init_noop(void) { return 0; }
  35
  36/*
  37 * The platform setup functions are preset with the default functions
  38 * for standard PC hardware.
  39 */
  40struct x86_init_ops x86_init __initdata = {
  41
  42        .resources = {
  43                .probe_roms             = probe_roms,
  44                .reserve_resources      = reserve_standard_io_resources,
  45                .memory_setup           = e820__memory_setup_default,
  46        },
  47
  48        .mpparse = {
  49                .mpc_record             = x86_init_uint_noop,
  50                .setup_ioapic_ids       = x86_init_noop,
  51                .mpc_apic_id            = default_mpc_apic_id,
  52                .smp_read_mpc_oem       = default_smp_read_mpc_oem,
  53                .mpc_oem_bus_info       = default_mpc_oem_bus_info,
  54                .find_smp_config        = default_find_smp_config,
  55                .get_smp_config         = default_get_smp_config,
  56        },
  57
  58        .irqs = {
  59                .pre_vector_init        = init_ISA_irqs,
  60                .intr_init              = native_init_IRQ,
  61                .trap_init              = x86_init_noop,
  62                .intr_mode_init         = apic_intr_mode_init
  63        },
  64
  65        .oem = {
  66                .arch_setup             = x86_init_noop,
  67                .banner                 = default_banner,
  68        },
  69
  70        .paging = {
  71                .pagetable_init         = native_pagetable_init,
  72        },
  73
  74        .timers = {
  75                .setup_percpu_clockev   = setup_boot_APIC_clock,
  76                .timer_init             = hpet_time_init,
  77                .wallclock_init         = x86_init_noop,
  78        },
  79
  80        .iommu = {
  81                .iommu_init             = iommu_init_noop,
  82        },
  83
  84        .pci = {
  85                .init                   = x86_default_pci_init,
  86                .init_irq               = x86_default_pci_init_irq,
  87                .fixup_irqs             = x86_default_pci_fixup_irqs,
  88        },
  89
  90        .hyper = {
  91                .init_platform          = x86_init_noop,
  92                .guest_late_init        = x86_init_noop,
  93                .x2apic_available       = bool_x86_init_noop,
  94                .init_mem_mapping       = x86_init_noop,
  95                .init_after_bootmem     = x86_init_noop,
  96        },
  97
  98        .acpi = {
  99                .get_root_pointer       = u64_x86_init_noop,
 100                .reduced_hw_early_init  = acpi_generic_reduced_hw_init,
 101        },
 102};
 103
 104struct x86_cpuinit_ops x86_cpuinit = {
 105        .early_percpu_clock_init        = x86_init_noop,
 106        .setup_percpu_clockev           = setup_secondary_APIC_clock,
 107};
 108
 109static void default_nmi_init(void) { };
 110
 111struct x86_platform_ops x86_platform __ro_after_init = {
 112        .calibrate_cpu                  = native_calibrate_cpu,
 113        .calibrate_tsc                  = native_calibrate_tsc,
 114        .get_wallclock                  = mach_get_cmos_time,
 115        .set_wallclock                  = mach_set_rtc_mmss,
 116        .iommu_shutdown                 = iommu_shutdown_noop,
 117        .is_untracked_pat_range         = is_ISA_range,
 118        .nmi_init                       = default_nmi_init,
 119        .get_nmi_reason                 = default_get_nmi_reason,
 120        .save_sched_clock_state         = tsc_save_sched_clock_state,
 121        .restore_sched_clock_state      = tsc_restore_sched_clock_state,
 122        .hyper.pin_vcpu                 = x86_op_int_noop,
 123};
 124
 125EXPORT_SYMBOL_GPL(x86_platform);
 126
 127#if defined(CONFIG_PCI_MSI)
 128struct x86_msi_ops x86_msi __ro_after_init = {
 129        .setup_msi_irqs         = native_setup_msi_irqs,
 130        .teardown_msi_irq       = native_teardown_msi_irq,
 131        .teardown_msi_irqs      = default_teardown_msi_irqs,
 132        .restore_msi_irqs       = default_restore_msi_irqs,
 133};
 134
 135/* MSI arch specific hooks */
 136int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 137{
 138        return x86_msi.setup_msi_irqs(dev, nvec, type);
 139}
 140
 141void arch_teardown_msi_irqs(struct pci_dev *dev)
 142{
 143        x86_msi.teardown_msi_irqs(dev);
 144}
 145
 146void arch_teardown_msi_irq(unsigned int irq)
 147{
 148        x86_msi.teardown_msi_irq(irq);
 149}
 150
 151void arch_restore_msi_irqs(struct pci_dev *dev)
 152{
 153        x86_msi.restore_msi_irqs(dev);
 154}
 155#endif
 156
 157struct x86_apic_ops x86_apic_ops __ro_after_init = {
 158        .io_apic_read   = native_io_apic_read,
 159        .restore        = native_restore_boot_irq_mode,
 160};
 161