1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_PLATFORM_H
#define _ASM_X86_PLATFORM_H
#include <asm/bootparam.h>
struct mpc_bus;
struct mpc_cpu;
struct mpc_table;
struct cpuinfo_x86;
/**
* struct x86_init_mpparse - platform specific mpparse ops
* @mpc_record: platform specific mpc record accounting
* @setup_ioapic_ids: platform specific ioapic id override
* @mpc_apic_id: platform specific mpc apic id assignment
* @smp_read_mpc_oem: platform specific oem mpc table setup
* @mpc_oem_pci_bus: platform specific pci bus setup (default NULL)
* @mpc_oem_bus_info: platform specific mpc bus info
* @find_smp_config: find the smp configuration
* @get_smp_config: get the smp configuration
*/
struct x86_init_mpparse {
void (*mpc_record)(unsigned int mode);
void (*setup_ioapic_ids)(void);
int (*mpc_apic_id)(struct mpc_cpu *m);
void (*smp_read_mpc_oem)(struct mpc_table *mpc);
void (*mpc_oem_pci_bus)(struct mpc_bus *m);
void (*mpc_oem_bus_info)(struct mpc_bus *m, char *name);
void (*find_smp_config)(void);
void (*get_smp_config)(unsigned int early);
};
/**
* struct x86_init_resources - platform specific resource related ops
* @probe_roms: probe BIOS roms
* @reserve_resources: reserve the standard resources for the
* platform
* @memory_setup: platform specific memory setup
*
*/
struct x86_init_resources {
void (*probe_roms)(void);
void (*reserve_resources)(void);
char *(*memory_setup)(void);
};
/**
* struct x86_init_irqs - platform specific interrupt setup
* @pre_vector_init: init code to run before interrupt vectors
* are set up.
* @intr_init: interrupt init code
* @trap_init: platform specific trap setup
* @intr_mode_init: interrupt delivery mode setup
*/
struct x86_init_irqs {
void (*pre_vector_init)(void);
void (*intr_init)(void);
void (*trap_init)(void);
void (*intr_mode_init)(void);
};
/**
* struct x86_init_oem - oem platform specific customizing functions
* @arch_setup: platform specific architecture setup
* @banner: print a platform specific banner
*/
struct x86_init_oem {
void (*arch_setup)(void);
void (*banner)(void);
};
/**
* struct x86_init_paging - platform specific paging functions
* @pagetable_init: platform specific paging initialization call to setup
* the kernel pagetables and prepare accessors functions.
* Callback must call paging_init(). Called once after the
* direct mapping for phys memory is available.
*/
struct x86_init_paging {
void (*pagetable_init)(void);
};
/**
* struct x86_init_timers - platform specific timer setup
* @setup_perpcu_clockev: set up the per cpu clock event device for the
* boot cpu
* @timer_init: initialize the platform timer (default PIT/HPET)
* @wallclock_init: init the wallclock device
*/
struct x86_init_timers {
void (*setup_percpu_clockev)(void);
void (*timer_init)(void);
void (*wallclock_init)(void);
};
/**
* struct x86_init_iommu - platform specific iommu setup
* @iommu_init: platform specific iommu setup
*/
struct x86_init_iommu {
int (*iommu_init)(void);
};
/**
* struct x86_init_pci - platform specific pci init functions
* @arch_init: platform specific pci arch init call
* @init: platform specific pci subsystem init
* @init_irq: platform specific pci irq init
* @fixup_irqs: platform specific pci irq fixup
*/
struct x86_init_pci {
int (*arch_init)(void);
int (*init)(void);
void (*init_irq)(void);
void (*fixup_irqs)(void);
};
/**
* struct x86_hyper_init - x86 hypervisor init functions
* @init_platform: platform setup
* @guest_late_init: guest late init
* @x2apic_available: X2APIC detection
* @init_mem_mapping: setup early mappings during init_mem_mapping()
* @init_after_bootmem: guest init after boot allocator is finished
*/
struct x86_hyper_init {
void (*init_platform)(void);
void (*guest_late_init)(void);
bool (*x2apic_available)(void);
void (*init_mem_mapping)(void);
void (*init_after_bootmem)(void);
};
/**
* struct x86_init_acpi - x86 ACPI init functions
* @get_root_pointer: get RSDP address
* @reduced_hw_early_init: hardware reduced platform early init
*/
struct x86_init_acpi {
u64 (*get_root_pointer)(void);
void (*reduced_hw_early_init)(void);
};
/**
* struct x86_init_ops - functions for platform specific setup
*
*/
struct x86_init_ops {
struct x86_init_resources resources;
struct x86_init_mpparse mpparse;
struct x86_init_irqs irqs;
struct x86_init_oem oem;
struct x86_init_paging paging;
struct x86_init_timers timers;
struct x86_init_iommu iommu;
struct x86_init_pci pci;
struct x86_hyper_init hyper;
struct x86_init_acpi acpi;
};
/**
* struct x86_cpuinit_ops - platform specific cpu hotplug setups
* @setup_percpu_clockev: set up the per cpu clock event device
* @early_percpu_clock_init: early init of the per cpu clock event device
*/
struct x86_cpuinit_ops {
void (*setup_percpu_clockev)(void);
void (*early_percpu_clock_init)(void);
void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node);
};
struct timespec64;
/**
* struct x86_legacy_devices - legacy x86 devices
*
* @pnpbios: this platform can have a PNPBIOS. If this is disabled the platform
* is known to never have a PNPBIOS.
*
* These are devices known to require LPC or ISA bus. The definition of legacy
* devices adheres to the ACPI 5.2.9.3 IA-PC Boot Architecture flag
* ACPI_FADT_LEGACY_DEVICES. These devices consist of user visible devices on
* the LPC or ISA bus. User visible devices are devices that have end-user
* accessible connectors (for example, LPT parallel port). Legacy devices on
* the LPC bus consist for example of serial and parallel ports, PS/2 keyboard
* / mouse, and the floppy disk controller. A system that lacks all known
* legacy devices can assume all devices can be detected exclusively via
* standard device enumeration mechanisms including the ACPI namespace.
*
* A system which has does not have ACPI_FADT_LEGACY_DEVICES enabled must not
* have any of the legacy devices enumerated below present.
*/
struct x86_legacy_devices {
int pnpbios;
};
/**
* enum x86_legacy_i8042_state - i8042 keyboard controller state
* @X86_LEGACY_I8042_PLATFORM_ABSENT: the controller is always absent on
* given platform/subarch.
* @X86_LEGACY_I8042_FIRMWARE_ABSENT: firmware reports that the controller
* is absent.
* @X86_LEGACY_i8042_EXPECTED_PRESENT: the controller is likely to be
* present, the i8042 driver should probe for controller existence.
*/
enum x86_legacy_i8042_state {
X86_LEGACY_I8042_PLATFORM_ABSENT,
X86_LEGACY_I8042_FIRMWARE_ABSENT,
X86_LEGACY_I8042_EXPECTED_PRESENT,
};
/**
* struct x86_legacy_features - legacy x86 features
*
* @i8042: indicated if we expect the device to have i8042 controller
* present.
* @rtc: this device has a CMOS real-time clock present
* @reserve_bios_regions: boot code will search for the EBDA address and the
* start of the 640k - 1M BIOS region. If false, the platform must
* ensure that its memory map correctly reserves sub-1MB regions as needed.
* @devices: legacy x86 devices, refer to struct x86_legacy_devices
* documentation for further details.
*/
struct x86_legacy_features {
enum x86_legacy_i8042_state i8042;
int rtc;
int warm_reset;
int no_vga;
int reserve_bios_regions;
struct x86_legacy_devices devices;
};
/**
* struct x86_hyper_runtime - x86 hypervisor specific runtime callbacks
*
* @pin_vcpu: pin current vcpu to specified physical cpu (run rarely)
*/
struct x86_hyper_runtime {
void (*pin_vcpu)(int cpu);
};
/**
* struct x86_platform_ops - platform specific runtime functions
* @calibrate_cpu: calibrate CPU
* @calibrate_tsc: calibrate TSC, if different from CPU
* @get_wallclock: get time from HW clock like RTC etc.
* @set_wallclock: set time back to HW clock
* @is_untracked_pat_range exclude from PAT logic
* @nmi_init enable NMI on cpus
* @save_sched_clock_state: save state for sched_clock() on suspend
* @restore_sched_clock_state: restore state for sched_clock() on resume
* @apic_post_init: adjust apic if needed
* @legacy: legacy features
* @set_legacy_features: override legacy features. Use of this callback
* is highly discouraged. You should only need
* this if your hardware platform requires further
* custom fine tuning far beyond what may be
* possible in x86_early_init_platform_quirks() by
* only using the current x86_hardware_subarch
* semantics.
* @hyper: x86 hypervisor specific runtime callbacks
*/
struct x86_platform_ops {
unsigned long (*calibrate_cpu)(void);
unsigned long (*calibrate_tsc)(void);
void (*get_wallclock)(struct timespec64 *ts);
int (*set_wallclock)(const struct timespec64 *ts);
void (*iommu_shutdown)(void);
bool (*is_untracked_pat_range)(u64 start, u64 end);
void (*nmi_init)(void);
unsigned char (*get_nmi_reason)(void);
void (*save_sched_clock_state)(void);
void (*restore_sched_clock_state)(void);
void (*apic_post_init)(void);
struct x86_legacy_features legacy;
void (*set_legacy_features)(void);
struct x86_hyper_runtime hyper;
};
struct pci_dev;
struct x86_msi_ops {
int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type);
void (*teardown_msi_irq)(unsigned int irq);
void (*teardown_msi_irqs)(struct pci_dev *dev);
void (*restore_msi_irqs)(struct pci_dev *dev);
};
struct x86_apic_ops {
unsigned int (*io_apic_read) (unsigned int apic, unsigned int reg);
void (*restore)(void);
};
extern struct x86_init_ops x86_init;
extern struct x86_cpuinit_ops x86_cpuinit;
extern struct x86_platform_ops x86_platform;
extern struct x86_msi_ops x86_msi;
extern struct x86_apic_ops x86_apic_ops;
extern void x86_early_init_platform_quirks(void);
extern void x86_init_noop(void);
extern void x86_init_uint_noop(unsigned int unused);
#endif
|
