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/api.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
x86_init_noop(void)27 void x86_init_noop(void) { }
x86_init_uint_noop(unsigned int unused)28 void __init x86_init_uint_noop(unsigned int unused) { }
iommu_init_noop(void)29 int __init iommu_init_noop(void) { return 0; }
iommu_shutdown_noop(void)30 void iommu_shutdown_noop(void) { }
bool_x86_init_noop(void)31 bool __init bool_x86_init_noop(void) { return false; }
x86_op_int_noop(int cpu)32 void x86_op_int_noop(int cpu) { }
33
34 /*
35 * The platform setup functions are preset with the default functions
36 * for standard PC hardware.
37 */
38 struct x86_init_ops x86_init __initdata = {
39
40 .resources = {
41 .probe_roms = probe_roms,
42 .reserve_resources = reserve_standard_io_resources,
43 .memory_setup = e820__memory_setup_default,
44 },
45
46 .mpparse = {
47 .mpc_record = x86_init_uint_noop,
48 .setup_ioapic_ids = x86_init_noop,
49 .mpc_apic_id = default_mpc_apic_id,
50 .smp_read_mpc_oem = default_smp_read_mpc_oem,
51 .mpc_oem_bus_info = default_mpc_oem_bus_info,
52 .find_smp_config = default_find_smp_config,
53 .get_smp_config = default_get_smp_config,
54 },
55
56 .irqs = {
57 .pre_vector_init = init_ISA_irqs,
58 .intr_init = native_init_IRQ,
59 .trap_init = x86_init_noop,
60 },
61
62 .oem = {
63 .arch_setup = x86_init_noop,
64 .banner = default_banner,
65 },
66
67 .paging = {
68 .pagetable_init = native_pagetable_init,
69 },
70
71 .timers = {
72 .setup_percpu_clockev = setup_boot_APIC_clock,
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 .hyper = {
88 .init_platform = x86_init_noop,
89 .x2apic_available = bool_x86_init_noop,
90 .init_mem_mapping = x86_init_noop,
91 },
92 };
93
94 struct x86_cpuinit_ops x86_cpuinit = {
95 .early_percpu_clock_init = x86_init_noop,
96 .setup_percpu_clockev = setup_secondary_APIC_clock,
97 };
98
default_nmi_init(void)99 static void default_nmi_init(void) { };
100
101 struct x86_platform_ops x86_platform __ro_after_init = {
102 .calibrate_cpu = native_calibrate_cpu,
103 .calibrate_tsc = native_calibrate_tsc,
104 .get_wallclock = mach_get_cmos_time,
105 .set_wallclock = mach_set_rtc_mmss,
106 .iommu_shutdown = iommu_shutdown_noop,
107 .is_untracked_pat_range = is_ISA_range,
108 .nmi_init = default_nmi_init,
109 .get_nmi_reason = default_get_nmi_reason,
110 .save_sched_clock_state = tsc_save_sched_clock_state,
111 .restore_sched_clock_state = tsc_restore_sched_clock_state,
112 .hyper.pin_vcpu = x86_op_int_noop,
113 };
114
115 EXPORT_SYMBOL_GPL(x86_platform);
116
117 #if defined(CONFIG_PCI_MSI)
118 struct x86_msi_ops x86_msi __ro_after_init = {
119 .setup_msi_irqs = native_setup_msi_irqs,
120 .teardown_msi_irq = native_teardown_msi_irq,
121 .teardown_msi_irqs = default_teardown_msi_irqs,
122 .restore_msi_irqs = default_restore_msi_irqs,
123 };
124
125 /* MSI arch specific hooks */
arch_setup_msi_irqs(struct pci_dev * dev,int nvec,int type)126 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
127 {
128 return x86_msi.setup_msi_irqs(dev, nvec, type);
129 }
130
arch_teardown_msi_irqs(struct pci_dev * dev)131 void arch_teardown_msi_irqs(struct pci_dev *dev)
132 {
133 x86_msi.teardown_msi_irqs(dev);
134 }
135
arch_teardown_msi_irq(unsigned int irq)136 void arch_teardown_msi_irq(unsigned int irq)
137 {
138 x86_msi.teardown_msi_irq(irq);
139 }
140
arch_restore_msi_irqs(struct pci_dev * dev)141 void arch_restore_msi_irqs(struct pci_dev *dev)
142 {
143 x86_msi.restore_msi_irqs(dev);
144 }
145 #endif
146
147 struct x86_io_apic_ops x86_io_apic_ops __ro_after_init = {
148 .read = native_io_apic_read,
149 .disable = native_disable_io_apic,
150 };
151