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81b53e5ff2
Some ACPI hardware reduced platforms need to initialize certain devices defined by the ACPI hardware specification even though in principle those devices should not be present in an ACPI hardware reduced platform. To allow that to happen, make it possible to override the generic x86_init callbacks and provide a custom legacy_pic value, add a new ->reduced_hw_early_init() callback to struct x86_init_acpi and make acpi_reduced_hw_init() use it. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J . Wysocki <rafael.j.wysocki@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-acpi@vger.kernel.org Link: http://lkml.kernel.org/r/20180220180506.65523-2-andriy.shevchenko@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
/*
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* Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
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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/pat.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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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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static bool __init bool_x86_init_noop(void) { return false; }
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static void x86_op_int_noop(int cpu) { }
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static u64 u64_x86_init_noop(void) { return 0; }
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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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.mpc_record = x86_init_uint_noop,
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.setup_ioapic_ids = x86_init_noop,
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.mpc_apic_id = default_mpc_apic_id,
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.smp_read_mpc_oem = default_smp_read_mpc_oem,
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.mpc_oem_bus_info = default_mpc_oem_bus_info,
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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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.trap_init = x86_init_noop,
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.intr_mode_init = apic_intr_mode_init
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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_init_noop,
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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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.init_mem_mapping = x86_init_noop,
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},
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.acpi = {
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.get_root_pointer = u64_x86_init_noop,
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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,
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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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.setup_msi_irqs = native_setup_msi_irqs,
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.teardown_msi_irq = native_teardown_msi_irq,
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.teardown_msi_irqs = default_teardown_msi_irqs,
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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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int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
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{
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return x86_msi.setup_msi_irqs(dev, nvec, type);
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}
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void arch_teardown_msi_irqs(struct pci_dev *dev)
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{
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x86_msi.teardown_msi_irqs(dev);
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}
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void arch_teardown_msi_irq(unsigned int irq)
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{
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x86_msi.teardown_msi_irq(irq);
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}
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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_io_apic_ops x86_io_apic_ops __ro_after_init = {
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.read = native_io_apic_read,
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.disable = native_disable_io_apic,
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};
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