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/module.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
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) { }
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 .tsc_pre_init = x86_init_noop,
72 .timer_init = hpet_time_init,
73 .wallclock_init = x86_init_noop,
74 },
75
76 .iommu = {
77 .iommu_init = iommu_init_noop,
78 },
79
80 .pci = {
81 .init = x86_default_pci_init,
82 .init_irq = x86_default_pci_init_irq,
83 .fixup_irqs = x86_default_pci_fixup_irqs,
84 },
85 };
86
87 struct x86_cpuinit_ops x86_cpuinit = {
88 .early_percpu_clock_init = x86_init_noop,
89 .setup_percpu_clockev = setup_secondary_APIC_clock,
90 };
91
default_nmi_init(void)92 static void default_nmi_init(void) { };
default_i8042_detect(void)93 static int default_i8042_detect(void) { return 1; };
94
95 struct x86_platform_ops x86_platform = {
96 .calibrate_tsc = native_calibrate_tsc,
97 .get_wallclock = mach_get_cmos_time,
98 .set_wallclock = mach_set_rtc_mmss,
99 .iommu_shutdown = iommu_shutdown_noop,
100 .is_untracked_pat_range = is_ISA_range,
101 .nmi_init = default_nmi_init,
102 .get_nmi_reason = default_get_nmi_reason,
103 .i8042_detect = default_i8042_detect,
104 .save_sched_clock_state = tsc_save_sched_clock_state,
105 .restore_sched_clock_state = tsc_restore_sched_clock_state,
106 };
107
108 EXPORT_SYMBOL_GPL(x86_platform);
109
110 #if defined(CONFIG_PCI_MSI)
111 struct x86_msi_ops x86_msi = {
112 .setup_msi_irqs = native_setup_msi_irqs,
113 .teardown_msi_irq = native_teardown_msi_irq,
114 .teardown_msi_irqs = default_teardown_msi_irqs,
115 .restore_msi_irqs = default_restore_msi_irqs,
116 };
117
118 /* MSI arch specific hooks */
arch_setup_msi_irqs(struct pci_dev * dev,int nvec,int type)119 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
120 {
121 return x86_msi.setup_msi_irqs(dev, nvec, type);
122 }
123
arch_teardown_msi_irqs(struct pci_dev * dev)124 void arch_teardown_msi_irqs(struct pci_dev *dev)
125 {
126 x86_msi.teardown_msi_irqs(dev);
127 }
128
arch_teardown_msi_irq(unsigned int irq)129 void arch_teardown_msi_irq(unsigned int irq)
130 {
131 x86_msi.teardown_msi_irq(irq);
132 }
133
arch_restore_msi_irqs(struct pci_dev * dev)134 void arch_restore_msi_irqs(struct pci_dev *dev)
135 {
136 x86_msi.restore_msi_irqs(dev);
137 }
138 #endif
139
140 struct x86_io_apic_ops x86_io_apic_ops = {
141 .read = native_io_apic_read,
142 .disable = native_disable_io_apic,
143 };
144