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Linux/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/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.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 
 27 void x86_init_noop(void) { }
 28 void __init x86_init_uint_noop(unsigned int unused) { }
 29 int __init iommu_init_noop(void) { return 0; }
 30 void iommu_shutdown_noop(void) { }
 31 
 32 /*
 33  * The platform setup functions are preset with the default functions
 34  * for standard PC hardware.
 35  */
 36 struct x86_init_ops x86_init __initdata = {
 37 
 38         .resources = {
 39                 .probe_roms             = probe_roms,
 40                 .reserve_resources      = reserve_standard_io_resources,
 41                 .memory_setup           = default_machine_specific_memory_setup,
 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 
 86 struct x86_cpuinit_ops x86_cpuinit = {
 87         .early_percpu_clock_init        = x86_init_noop,
 88         .setup_percpu_clockev           = setup_secondary_APIC_clock,
 89 };
 90 
 91 static void default_nmi_init(void) { };
 92 
 93 struct 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 
106 EXPORT_SYMBOL_GPL(x86_platform);
107 
108 #if defined(CONFIG_PCI_MSI)
109 struct 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 */
117 int 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 
122 void arch_teardown_msi_irqs(struct pci_dev *dev)
123 {
124         x86_msi.teardown_msi_irqs(dev);
125 }
126 
127 void arch_teardown_msi_irq(unsigned int irq)
128 {
129         x86_msi.teardown_msi_irq(irq);
130 }
131 
132 void arch_restore_msi_irqs(struct pci_dev *dev)
133 {
134         x86_msi.restore_msi_irqs(dev);
135 }
136 #endif
137 
138 struct 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 

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