arch/x86/kernel/x86_init.c

   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/module.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/pci.h>
  15 #include <asm/mpspec.h>
  16 #include <asm/setup.h>
  17 #include <asm/apic.h>
  18 #include <asm/e820.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
  28 void x86_init_noop(void) { }
  29 void __init x86_init_uint_noop(unsigned int unused) { }
  30 int __init iommu_init_noop(void) { return 0; }
  31 void iommu_shutdown_noop(void) { }
  32
  33 /*
  34  * The platform setup functions are preset with the default functions
  35  * for standard PC hardware.
  36  */
  37 struct x86_init_ops x86_init __initdata = {
  38
  39         .resources = {
  40                 .probe_roms             = probe_roms,
  41                 .reserve_resources      = reserve_standard_io_resources,
  42                 .memory_setup           = default_machine_specific_memory_setup,
  43         },
  44
  45         .mpparse = {
  46                 .mpc_record             = x86_init_uint_noop,
  47                 .setup_ioapic_ids       = x86_init_noop,
  48                 .mpc_apic_id            = default_mpc_apic_id,
  49                 .smp_read_mpc_oem       = default_smp_read_mpc_oem,
  50                 .mpc_oem_bus_info       = default_mpc_oem_bus_info,
  51                 .find_smp_config        = default_find_smp_config,
  52                 .get_smp_config         = default_get_smp_config,
  53         },
  54
  55         .irqs = {
  56                 .pre_vector_init        = init_ISA_irqs,
  57                 .intr_init              = native_init_IRQ,
  58                 .trap_init              = x86_init_noop,
  59         },
  60
  61         .oem = {
  62                 .arch_setup             = x86_init_noop,
  63                 .banner                 = default_banner,
  64         },
  65
  66         .paging = {
  67                 .pagetable_init         = native_pagetable_init,
  68         },
  69
  70         .timers = {
  71                 .setup_percpu_clockev   = setup_boot_APIC_clock,
  72                 .tsc_pre_init           = x86_init_noop,
  73                 .timer_init             = hpet_time_init,
  74                 .wallclock_init         = x86_init_noop,
  75         },
  76
  77         .iommu = {
  78                 .iommu_init             = iommu_init_noop,
  79         },
  80
  81         .pci = {
  82                 .init                   = x86_default_pci_init,
  83                 .init_irq               = x86_default_pci_init_irq,
  84                 .fixup_irqs             = x86_default_pci_fixup_irqs,
  85         },
  86 };
  87
  88 struct x86_cpuinit_ops x86_cpuinit = {
  89         .early_percpu_clock_init        = x86_init_noop,
  90         .setup_percpu_clockev           = setup_secondary_APIC_clock,
  91 };
  92
  93 static void default_nmi_init(void) { };
  94 static int default_i8042_detect(void) { return 1; };
  95
  96 struct x86_platform_ops x86_platform = {
  97         .calibrate_tsc                  = native_calibrate_tsc,
  98         .get_wallclock                  = mach_get_cmos_time,
  99         .set_wallclock                  = mach_set_rtc_mmss,
 100         .iommu_shutdown                 = iommu_shutdown_noop,
 101         .is_untracked_pat_range         = is_ISA_range,
 102         .nmi_init                       = default_nmi_init,
 103         .get_nmi_reason                 = default_get_nmi_reason,
 104         .i8042_detect                   = default_i8042_detect,
 105         .save_sched_clock_state         = tsc_save_sched_clock_state,
 106         .restore_sched_clock_state      = tsc_restore_sched_clock_state,
 107 };
 108
 109 EXPORT_SYMBOL_GPL(x86_platform);
 110
 111 #if defined(CONFIG_PCI_MSI)
 112 struct x86_msi_ops x86_msi = {
 113         .setup_msi_irqs         = native_setup_msi_irqs,
 114         .compose_msi_msg        = native_compose_msi_msg,
 115         .teardown_msi_irq       = native_teardown_msi_irq,
 116         .teardown_msi_irqs      = default_teardown_msi_irqs,
 117         .restore_msi_irqs       = default_restore_msi_irqs,
 118         .setup_hpet_msi         = default_setup_hpet_msi,
 119 };
 120
 121 /* MSI arch specific hooks */
 122 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
 123 {
 124         return x86_msi.setup_msi_irqs(dev, nvec, type);
 125 }
 126
 127 void arch_teardown_msi_irqs(struct pci_dev *dev)
 128 {
 129         x86_msi.teardown_msi_irqs(dev);
 130 }
 131
 132 void arch_teardown_msi_irq(unsigned int irq)
 133 {
 134         x86_msi.teardown_msi_irq(irq);
 135 }
 136
 137 void arch_restore_msi_irqs(struct pci_dev *dev, int irq)
 138 {
 139         x86_msi.restore_msi_irqs(dev, irq);
 140 }
 141 #endif
 142
 143 struct x86_io_apic_ops x86_io_apic_ops = {
 144         .init                   = native_io_apic_init_mappings,
 145         .read                   = native_io_apic_read,
 146         .write                  = native_io_apic_write,
 147         .modify                 = native_io_apic_modify,
 148         .disable                = native_disable_io_apic,
 149         .print_entries          = native_io_apic_print_entries,
 150         .set_affinity           = native_ioapic_set_affinity,
 151         .setup_entry            = native_setup_ioapic_entry,
 152         .eoi_ioapic_pin         = native_eoi_ioapic_pin,
 153 };