1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef XEN_OPS_H
3 #define XEN_OPS_H
4
5 #include <linux/init.h>
6 #include <linux/clocksource.h>
7 #include <linux/irqreturn.h>
8 #include <xen/xen-ops.h>
9
10 /* These are code, but not functions. Defined in entry.S */
11 extern const char xen_hypervisor_callback[];
12 extern const char xen_failsafe_callback[];
13
14 void xen_sysenter_target(void);
15 #ifdef CONFIG_X86_64
16 void xen_syscall_target(void);
17 void xen_syscall32_target(void);
18 #endif
19
20 extern void *xen_initial_gdt;
21
22 struct trap_info;
23 void xen_copy_trap_info(struct trap_info *traps);
24
25 DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
26 DECLARE_PER_CPU(unsigned long, xen_cr3);
27 DECLARE_PER_CPU(unsigned long, xen_current_cr3);
28
29 extern struct start_info *xen_start_info;
30 extern struct shared_info xen_dummy_shared_info;
31 extern struct shared_info *HYPERVISOR_shared_info;
32
33 extern bool xen_fifo_events;
34
35 void xen_setup_mfn_list_list(void);
36 void xen_build_mfn_list_list(void);
37 void xen_setup_machphys_mapping(void);
38 void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
39 void xen_reserve_top(void);
40 void __init xen_reserve_special_pages(void);
41 void __init xen_pt_check_e820(void);
42
43 void xen_mm_pin_all(void);
44 void xen_mm_unpin_all(void);
45 #ifdef CONFIG_X86_64
46 void __init xen_relocate_p2m(void);
47 #endif
48
49 bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size);
50 unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
51 void __init xen_inv_extra_mem(void);
52 void __init xen_remap_memory(void);
53 phys_addr_t __init xen_find_free_area(phys_addr_t size);
54 char * __init xen_memory_setup(void);
55 void __init xen_arch_setup(void);
56 void xen_enable_sysenter(void);
57 void xen_enable_syscall(void);
58 void xen_vcpu_restore(void);
59
60 void xen_callback_vector(void);
61 void xen_hvm_init_shared_info(void);
62 void xen_unplug_emulated_devices(void);
63
64 void __init xen_build_dynamic_phys_to_machine(void);
65 void __init xen_vmalloc_p2m_tree(void);
66
67 void xen_init_irq_ops(void);
68 void xen_setup_timer(int cpu);
69 void xen_setup_runstate_info(int cpu);
70 void xen_teardown_timer(int cpu);
71 void xen_setup_cpu_clockevents(void);
72 void xen_save_time_memory_area(void);
73 void xen_restore_time_memory_area(void);
74 void xen_init_time_ops(void);
75 void xen_hvm_init_time_ops(void);
76
77 irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
78
79 bool xen_vcpu_stolen(int vcpu);
80
81 extern int xen_have_vcpu_info_placement;
82
83 int xen_vcpu_setup(int cpu);
84 void xen_vcpu_info_reset(int cpu);
85 void xen_setup_vcpu_info_placement(void);
86
87 #ifdef CONFIG_SMP
88 void xen_smp_init(void);
89 void __init xen_hvm_smp_init(void);
90
91 extern cpumask_var_t xen_cpu_initialized_map;
92 #else
xen_smp_init(void)93 static inline void xen_smp_init(void) {}
xen_hvm_smp_init(void)94 static inline void xen_hvm_smp_init(void) {}
95 #endif
96
97 #ifdef CONFIG_PARAVIRT_SPINLOCKS
98 void __init xen_init_spinlocks(void);
99 void xen_init_lock_cpu(int cpu);
100 void xen_uninit_lock_cpu(int cpu);
101 #else
xen_init_spinlocks(void)102 static inline void xen_init_spinlocks(void)
103 {
104 }
xen_init_lock_cpu(int cpu)105 static inline void xen_init_lock_cpu(int cpu)
106 {
107 }
xen_uninit_lock_cpu(int cpu)108 static inline void xen_uninit_lock_cpu(int cpu)
109 {
110 }
111 #endif
112
113 struct dom0_vga_console_info;
114
115 #ifdef CONFIG_XEN_DOM0
116 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
117 #else
xen_init_vga(const struct dom0_vga_console_info * info,size_t size)118 static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
119 size_t size)
120 {
121 }
122 #endif
123
124 void __init xen_init_apic(void);
125
126 #ifdef CONFIG_XEN_EFI
127 extern void xen_efi_init(struct boot_params *boot_params);
128 #else
xen_efi_init(struct boot_params * boot_params)129 static inline void __init xen_efi_init(struct boot_params *boot_params)
130 {
131 }
132 #endif
133
134 __visible void xen_irq_enable_direct(void);
135 __visible void xen_irq_disable_direct(void);
136 __visible unsigned long xen_save_fl_direct(void);
137 __visible void xen_restore_fl_direct(unsigned long);
138
139 __visible unsigned long xen_read_cr2(void);
140 __visible unsigned long xen_read_cr2_direct(void);
141
142 /* These are not functions, and cannot be called normally */
143 __visible void xen_iret(void);
144 __visible void xen_sysret32(void);
145 __visible void xen_sysret64(void);
146
147 extern int xen_panic_handler_init(void);
148
149 int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
150 int (*cpu_dead_cb)(unsigned int));
151
152 void xen_pin_vcpu(int cpu);
153
154 void xen_emergency_restart(void);
155 #ifdef CONFIG_XEN_PV
156 void xen_pv_pre_suspend(void);
157 void xen_pv_post_suspend(int suspend_cancelled);
158 #else
xen_pv_pre_suspend(void)159 static inline void xen_pv_pre_suspend(void) {}
xen_pv_post_suspend(int suspend_cancelled)160 static inline void xen_pv_post_suspend(int suspend_cancelled) {}
161 #endif
162
163 #ifdef CONFIG_XEN_PVHVM
164 void xen_hvm_post_suspend(int suspend_cancelled);
165 #else
xen_hvm_post_suspend(int suspend_cancelled)166 static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
167 #endif
168
169 #endif /* XEN_OPS_H */
170