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163 lines
4.2 KiB
163 lines
4.2 KiB
/* |
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* Copyright (C) 2009 Thomas Gleixner <[email protected]> |
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* |
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* For licencing details see kernel-base/COPYING |
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*/ |
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#include <linux/init.h> |
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#include <linux/ioport.h> |
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#include <linux/export.h> |
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#include <linux/pci.h> |
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#include <asm/acpi.h> |
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#include <asm/bios_ebda.h> |
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#include <asm/paravirt.h> |
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#include <asm/pci_x86.h> |
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#include <asm/mpspec.h> |
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#include <asm/setup.h> |
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#include <asm/apic.h> |
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#include <asm/e820/api.h> |
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#include <asm/time.h> |
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#include <asm/irq.h> |
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#include <asm/io_apic.h> |
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#include <asm/hpet.h> |
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#include <asm/memtype.h> |
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#include <asm/tsc.h> |
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#include <asm/iommu.h> |
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#include <asm/mach_traps.h> |
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#include <asm/irqdomain.h> |
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void x86_init_noop(void) { } |
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void __init x86_init_uint_noop(unsigned int unused) { } |
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static int __init iommu_init_noop(void) { return 0; } |
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static void iommu_shutdown_noop(void) { } |
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bool __init bool_x86_init_noop(void) { return false; } |
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void x86_op_int_noop(int cpu) { } |
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static __init int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; } |
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static __init void get_rtc_noop(struct timespec64 *now) { } |
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static __initconst const struct of_device_id of_cmos_match[] = { |
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{ .compatible = "motorola,mc146818" }, |
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{} |
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}; |
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/* |
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* Allow devicetree configured systems to disable the RTC by setting the |
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* corresponding DT node's status property to disabled. Code is optimized |
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* out for CONFIG_OF=n builds. |
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*/ |
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static __init void x86_wallclock_init(void) |
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{ |
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struct device_node *node = of_find_matching_node(NULL, of_cmos_match); |
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if (node && !of_device_is_available(node)) { |
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x86_platform.get_wallclock = get_rtc_noop; |
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x86_platform.set_wallclock = set_rtc_noop; |
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} |
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} |
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/* |
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* The platform setup functions are preset with the default functions |
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* for standard PC hardware. |
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*/ |
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struct x86_init_ops x86_init __initdata = { |
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.resources = { |
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.probe_roms = probe_roms, |
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.reserve_resources = reserve_standard_io_resources, |
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.memory_setup = e820__memory_setup_default, |
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}, |
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.mpparse = { |
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.setup_ioapic_ids = x86_init_noop, |
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.find_smp_config = default_find_smp_config, |
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.get_smp_config = default_get_smp_config, |
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}, |
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.irqs = { |
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.pre_vector_init = init_ISA_irqs, |
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.intr_init = native_init_IRQ, |
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.intr_mode_select = apic_intr_mode_select, |
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.intr_mode_init = apic_intr_mode_init, |
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.create_pci_msi_domain = native_create_pci_msi_domain, |
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}, |
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.oem = { |
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.arch_setup = x86_init_noop, |
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.banner = default_banner, |
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}, |
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.paging = { |
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.pagetable_init = native_pagetable_init, |
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}, |
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.timers = { |
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.setup_percpu_clockev = setup_boot_APIC_clock, |
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.timer_init = hpet_time_init, |
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.wallclock_init = x86_wallclock_init, |
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}, |
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.iommu = { |
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.iommu_init = iommu_init_noop, |
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}, |
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.pci = { |
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.init = x86_default_pci_init, |
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.init_irq = x86_default_pci_init_irq, |
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.fixup_irqs = x86_default_pci_fixup_irqs, |
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}, |
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.hyper = { |
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.init_platform = x86_init_noop, |
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.guest_late_init = x86_init_noop, |
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.x2apic_available = bool_x86_init_noop, |
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.msi_ext_dest_id = bool_x86_init_noop, |
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.init_mem_mapping = x86_init_noop, |
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.init_after_bootmem = x86_init_noop, |
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}, |
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.acpi = { |
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.set_root_pointer = x86_default_set_root_pointer, |
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.get_root_pointer = x86_default_get_root_pointer, |
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.reduced_hw_early_init = acpi_generic_reduced_hw_init, |
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}, |
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}; |
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struct x86_cpuinit_ops x86_cpuinit = { |
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.early_percpu_clock_init = x86_init_noop, |
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.setup_percpu_clockev = setup_secondary_APIC_clock, |
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}; |
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static void default_nmi_init(void) { }; |
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struct x86_platform_ops x86_platform __ro_after_init = { |
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.calibrate_cpu = native_calibrate_cpu_early, |
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.calibrate_tsc = native_calibrate_tsc, |
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.get_wallclock = mach_get_cmos_time, |
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.set_wallclock = mach_set_rtc_mmss, |
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.iommu_shutdown = iommu_shutdown_noop, |
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.is_untracked_pat_range = is_ISA_range, |
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.nmi_init = default_nmi_init, |
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.get_nmi_reason = default_get_nmi_reason, |
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.save_sched_clock_state = tsc_save_sched_clock_state, |
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.restore_sched_clock_state = tsc_restore_sched_clock_state, |
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.hyper.pin_vcpu = x86_op_int_noop, |
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}; |
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EXPORT_SYMBOL_GPL(x86_platform); |
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#if defined(CONFIG_PCI_MSI) |
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struct x86_msi_ops x86_msi __ro_after_init = { |
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.restore_msi_irqs = default_restore_msi_irqs, |
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}; |
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/* MSI arch specific hooks */ |
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void arch_restore_msi_irqs(struct pci_dev *dev) |
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{ |
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x86_msi.restore_msi_irqs(dev); |
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} |
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#endif |
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struct x86_apic_ops x86_apic_ops __ro_after_init = { |
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.io_apic_read = native_io_apic_read, |
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.restore = native_restore_boot_irq_mode, |
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};
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