tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_PLATFORM_H
2#define _ASM_X86_PLATFORM_H
3
4#include <asm/pgtable_types.h>
5#include <asm/bootparam.h>
6
7struct mpc_bus;
8struct mpc_cpu;
9struct mpc_table;
10struct cpuinfo_x86;
11
12/**
13 * struct x86_init_mpparse - platform specific mpparse ops
14 * @mpc_record: platform specific mpc record accounting
15 * @setup_ioapic_ids: platform specific ioapic id override
16 * @mpc_apic_id: platform specific mpc apic id assignment
17 * @smp_read_mpc_oem: platform specific oem mpc table setup
18 * @mpc_oem_pci_bus: platform specific pci bus setup (default NULL)
19 * @mpc_oem_bus_info: platform specific mpc bus info
20 * @find_smp_config: find the smp configuration
21 * @get_smp_config: get the smp configuration
22 */
23struct x86_init_mpparse {
24 void (*mpc_record)(unsigned int mode);
25 void (*setup_ioapic_ids)(void);
26 int (*mpc_apic_id)(struct mpc_cpu *m);
27 void (*smp_read_mpc_oem)(struct mpc_table *mpc);
28 void (*mpc_oem_pci_bus)(struct mpc_bus *m);
29 void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
30 void (*find_smp_config)(void);
31 void (*get_smp_config)(unsigned int early);
32};
33
34/**
35 * struct x86_init_resources - platform specific resource related ops
36 * @probe_roms: probe BIOS roms
37 * @reserve_resources: reserve the standard resources for the
38 * platform
39 * @memory_setup: platform specific memory setup
40 *
41 */
42struct x86_init_resources {
43 void (*probe_roms)(void);
44 void (*reserve_resources)(void);
45 char *(*memory_setup)(void);
46};
47
48/**
49 * struct x86_init_irqs - platform specific interrupt setup
50 * @pre_vector_init: init code to run before interrupt vectors
51 * are set up.
52 * @intr_init: interrupt init code
53 * @trap_init: platform specific trap setup
54 */
55struct x86_init_irqs {
56 void (*pre_vector_init)(void);
57 void (*intr_init)(void);
58 void (*trap_init)(void);
59};
60
61/**
62 * struct x86_init_oem - oem platform specific customizing functions
63 * @arch_setup: platform specific architecure setup
64 * @banner: print a platform specific banner
65 */
66struct x86_init_oem {
67 void (*arch_setup)(void);
68 void (*banner)(void);
69};
70
71/**
72 * struct x86_init_mapping - platform specific initial kernel pagetable setup
73 * @pagetable_reserve: reserve a range of addresses for kernel pagetable usage
74 *
75 * For more details on the purpose of this hook, look in
76 * init_memory_mapping and the commit that added it.
77 */
78struct x86_init_mapping {
79 void (*pagetable_reserve)(u64 start, u64 end);
80};
81
82/**
83 * struct x86_init_paging - platform specific paging functions
84 * @pagetable_init: platform specific paging initialization call to setup
85 * the kernel pagetables and prepare accessors functions.
86 * Callback must call paging_init(). Called once after the
87 * direct mapping for phys memory is available.
88 */
89struct x86_init_paging {
90 void (*pagetable_init)(void);
91};
92
93/**
94 * struct x86_init_timers - platform specific timer setup
95 * @setup_perpcu_clockev: set up the per cpu clock event device for the
96 * boot cpu
97 * @tsc_pre_init: platform function called before TSC init
98 * @timer_init: initialize the platform timer (default PIT/HPET)
99 * @wallclock_init: init the wallclock device
100 */
101struct x86_init_timers {
102 void (*setup_percpu_clockev)(void);
103 void (*tsc_pre_init)(void);
104 void (*timer_init)(void);
105 void (*wallclock_init)(void);
106};
107
108/**
109 * struct x86_init_iommu - platform specific iommu setup
110 * @iommu_init: platform specific iommu setup
111 */
112struct x86_init_iommu {
113 int (*iommu_init)(void);
114};
115
116/**
117 * struct x86_init_pci - platform specific pci init functions
118 * @arch_init: platform specific pci arch init call
119 * @init: platform specific pci subsystem init
120 * @init_irq: platform specific pci irq init
121 * @fixup_irqs: platform specific pci irq fixup
122 */
123struct x86_init_pci {
124 int (*arch_init)(void);
125 int (*init)(void);
126 void (*init_irq)(void);
127 void (*fixup_irqs)(void);
128};
129
130/**
131 * struct x86_init_ops - functions for platform specific setup
132 *
133 */
134struct x86_init_ops {
135 struct x86_init_resources resources;
136 struct x86_init_mpparse mpparse;
137 struct x86_init_irqs irqs;
138 struct x86_init_oem oem;
139 struct x86_init_mapping mapping;
140 struct x86_init_paging paging;
141 struct x86_init_timers timers;
142 struct x86_init_iommu iommu;
143 struct x86_init_pci pci;
144};
145
146/**
147 * struct x86_cpuinit_ops - platform specific cpu hotplug setups
148 * @setup_percpu_clockev: set up the per cpu clock event device
149 * @early_percpu_clock_init: early init of the per cpu clock event device
150 */
151struct x86_cpuinit_ops {
152 void (*setup_percpu_clockev)(void);
153 void (*early_percpu_clock_init)(void);
154 void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node);
155};
156
157/**
158 * struct x86_platform_ops - platform specific runtime functions
159 * @calibrate_tsc: calibrate TSC
160 * @get_wallclock: get time from HW clock like RTC etc.
161 * @set_wallclock: set time back to HW clock
162 * @is_untracked_pat_range exclude from PAT logic
163 * @nmi_init enable NMI on cpus
164 * @i8042_detect pre-detect if i8042 controller exists
165 * @save_sched_clock_state: save state for sched_clock() on suspend
166 * @restore_sched_clock_state: restore state for sched_clock() on resume
167 * @apic_post_init: adjust apic if neeeded
168 */
169struct x86_platform_ops {
170 unsigned long (*calibrate_tsc)(void);
171 unsigned long (*get_wallclock)(void);
172 int (*set_wallclock)(unsigned long nowtime);
173 void (*iommu_shutdown)(void);
174 bool (*is_untracked_pat_range)(u64 start, u64 end);
175 void (*nmi_init)(void);
176 unsigned char (*get_nmi_reason)(void);
177 int (*i8042_detect)(void);
178 void (*save_sched_clock_state)(void);
179 void (*restore_sched_clock_state)(void);
180 void (*apic_post_init)(void);
181};
182
183struct pci_dev;
184
185struct x86_msi_ops {
186 int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
187 void (*teardown_msi_irq)(unsigned int irq);
188 void (*teardown_msi_irqs)(struct pci_dev *dev);
189 void (*restore_msi_irqs)(struct pci_dev *dev, int irq);
190};
191
192struct x86_io_apic_ops {
193 void (*init) (void);
194 unsigned int (*read) (unsigned int apic, unsigned int reg);
195 void (*write) (unsigned int apic, unsigned int reg, unsigned int value);
196 void (*modify)(unsigned int apic, unsigned int reg, unsigned int value);
197};
198
199extern struct x86_init_ops x86_init;
200extern struct x86_cpuinit_ops x86_cpuinit;
201extern struct x86_platform_ops x86_platform;
202extern struct x86_msi_ops x86_msi;
203extern struct x86_io_apic_ops x86_io_apic_ops;
204extern void x86_init_noop(void);
205extern void x86_init_uint_noop(unsigned int unused);
206
207#endif