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TOMOYO Linux Cross Reference
Linux/arch/x86/kernel/x86_init.c

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  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 
 28 void x86_init_noop(void) { }
 29 void __init x86_init_uint_noop(unsigned int unused) { }
 30 static int __init iommu_init_noop(void) { return 0; }
 31 static void iommu_shutdown_noop(void) { }
 32 static bool __init bool_x86_init_noop(void) { return false; }
 33 static void x86_op_int_noop(int cpu) { }
 34 
 35 /*
 36  * The platform setup functions are preset with the default functions
 37  * for standard PC hardware.
 38  */
 39 struct x86_init_ops x86_init __initdata = {
 40 
 41         .resources = {
 42                 .probe_roms             = probe_roms,
 43                 .reserve_resources      = reserve_standard_io_resources,
 44                 .memory_setup           = e820__memory_setup_default,
 45         },
 46 
 47         .mpparse = {
 48                 .mpc_record             = x86_init_uint_noop,
 49                 .setup_ioapic_ids       = x86_init_noop,
 50                 .mpc_apic_id            = default_mpc_apic_id,
 51                 .smp_read_mpc_oem       = default_smp_read_mpc_oem,
 52                 .mpc_oem_bus_info       = default_mpc_oem_bus_info,
 53                 .find_smp_config        = default_find_smp_config,
 54                 .get_smp_config         = default_get_smp_config,
 55         },
 56 
 57         .irqs = {
 58                 .pre_vector_init        = init_ISA_irqs,
 59                 .intr_init              = native_init_IRQ,
 60                 .trap_init              = x86_init_noop,
 61                 .intr_mode_init         = apic_intr_mode_init
 62         },
 63 
 64         .oem = {
 65                 .arch_setup             = x86_init_noop,
 66                 .banner                 = default_banner,
 67         },
 68 
 69         .paging = {
 70                 .pagetable_init         = native_pagetable_init,
 71         },
 72 
 73         .timers = {
 74                 .setup_percpu_clockev   = setup_boot_APIC_clock,
 75                 .timer_init             = hpet_time_init,
 76                 .wallclock_init         = x86_init_noop,
 77         },
 78 
 79         .iommu = {
 80                 .iommu_init             = iommu_init_noop,
 81         },
 82 
 83         .pci = {
 84                 .init                   = x86_default_pci_init,
 85                 .init_irq               = x86_default_pci_init_irq,
 86                 .fixup_irqs             = x86_default_pci_fixup_irqs,
 87         },
 88 
 89         .hyper = {
 90                 .init_platform          = x86_init_noop,
 91                 .guest_late_init        = x86_init_noop,
 92                 .x2apic_available       = bool_x86_init_noop,
 93                 .init_mem_mapping       = x86_init_noop,
 94                 .init_after_bootmem     = x86_init_noop,
 95         },
 96 
 97         .acpi = {
 98                 .get_root_pointer       = x86_default_get_root_pointer,
 99                 .reduced_hw_early_init  = acpi_generic_reduced_hw_init,
100         },
101 };
102 
103 struct x86_cpuinit_ops x86_cpuinit = {
104         .early_percpu_clock_init        = x86_init_noop,
105         .setup_percpu_clockev           = setup_secondary_APIC_clock,
106 };
107 
108 static void default_nmi_init(void) { };
109 
110 struct x86_platform_ops x86_platform __ro_after_init = {
111         .calibrate_cpu                  = native_calibrate_cpu_early,
112         .calibrate_tsc                  = native_calibrate_tsc,
113         .get_wallclock                  = mach_get_cmos_time,
114         .set_wallclock                  = mach_set_rtc_mmss,
115         .iommu_shutdown                 = iommu_shutdown_noop,
116         .is_untracked_pat_range         = is_ISA_range,
117         .nmi_init                       = default_nmi_init,
118         .get_nmi_reason                 = default_get_nmi_reason,
119         .save_sched_clock_state         = tsc_save_sched_clock_state,
120         .restore_sched_clock_state      = tsc_restore_sched_clock_state,
121         .hyper.pin_vcpu                 = x86_op_int_noop,
122 };
123 
124 EXPORT_SYMBOL_GPL(x86_platform);
125 
126 #if defined(CONFIG_PCI_MSI)
127 struct x86_msi_ops x86_msi __ro_after_init = {
128         .setup_msi_irqs         = native_setup_msi_irqs,
129         .teardown_msi_irq       = native_teardown_msi_irq,
130         .teardown_msi_irqs      = default_teardown_msi_irqs,
131         .restore_msi_irqs       = default_restore_msi_irqs,
132 };
133 
134 /* MSI arch specific hooks */
135 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
136 {
137         return x86_msi.setup_msi_irqs(dev, nvec, type);
138 }
139 
140 void arch_teardown_msi_irqs(struct pci_dev *dev)
141 {
142         x86_msi.teardown_msi_irqs(dev);
143 }
144 
145 void arch_teardown_msi_irq(unsigned int irq)
146 {
147         x86_msi.teardown_msi_irq(irq);
148 }
149 
150 void arch_restore_msi_irqs(struct pci_dev *dev)
151 {
152         x86_msi.restore_msi_irqs(dev);
153 }
154 #endif
155 
156 struct x86_apic_ops x86_apic_ops __ro_after_init = {
157         .io_apic_read   = native_io_apic_read,
158         .restore        = native_restore_boot_irq_mode,
159 };
160 

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