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 */
 11extern const char xen_failsafe_callback[];
 12
 13void xen_entry_SYSENTER_compat(void);
 14#ifdef CONFIG_X86_64
 15void xen_entry_SYSCALL_64(void);
 16void xen_entry_SYSCALL_compat(void);
 17#endif
 18
 19extern void *xen_initial_gdt;
 20
 21struct trap_info;
 22void xen_copy_trap_info(struct trap_info *traps);
 23
 24DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
 25DECLARE_PER_CPU(unsigned long, xen_cr3);
 26DECLARE_PER_CPU(unsigned long, xen_current_cr3);
 27
 28extern struct start_info *xen_start_info;
 29extern struct shared_info xen_dummy_shared_info;
 30extern struct shared_info *HYPERVISOR_shared_info;
 31
 32extern bool xen_fifo_events;
 33
 34void xen_setup_mfn_list_list(void);
 35void xen_build_mfn_list_list(void);
 36void xen_setup_machphys_mapping(void);
 37void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
 38void __init xen_reserve_special_pages(void);
 39void __init xen_pt_check_e820(void);
 40
 41void xen_mm_pin_all(void);
 42void xen_mm_unpin_all(void);
 43#ifdef CONFIG_X86_64
 44void __init xen_relocate_p2m(void);
 45#endif
 46
 47bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size);
 48unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
 49void __init xen_inv_extra_mem(void);
 50void __init xen_remap_memory(void);
 51phys_addr_t __init xen_find_free_area(phys_addr_t size);
 52char * __init xen_memory_setup(void);
 53void __init xen_arch_setup(void);
 54void xen_banner(void);
 55void xen_enable_sysenter(void);
 56void xen_enable_syscall(void);
 57void xen_vcpu_restore(void);
 58
 59void xen_hvm_init_shared_info(void);
 60void xen_unplug_emulated_devices(void);
 61
 62void __init xen_build_dynamic_phys_to_machine(void);
 63void __init xen_vmalloc_p2m_tree(void);
 64
 65void xen_init_irq_ops(void);
 66void xen_setup_timer(int cpu);
 67void xen_setup_runstate_info(int cpu);
 68void xen_teardown_timer(int cpu);
 69void xen_setup_cpu_clockevents(void);
 70void xen_save_time_memory_area(void);
 71void xen_restore_time_memory_area(void);
 72void xen_init_time_ops(void);
 73void xen_hvm_init_time_ops(void);
 74
 75irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
 76
 77bool xen_vcpu_stolen(int vcpu);
 78
 79void xen_vcpu_setup(int cpu);
 80void xen_vcpu_info_reset(int cpu);
 81void xen_setup_vcpu_info_placement(void);
 82
 83#ifdef CONFIG_SMP
 84void xen_smp_init(void);
 85void __init xen_hvm_smp_init(void);
 86
 87extern cpumask_var_t xen_cpu_initialized_map;
 88#else
 89static inline void xen_smp_init(void) {}
 90static inline void xen_hvm_smp_init(void) {}
 91#endif
 92
 93#ifdef CONFIG_PARAVIRT_SPINLOCKS
 94void __init xen_init_spinlocks(void);
 95void xen_init_lock_cpu(int cpu);
 96void xen_uninit_lock_cpu(int cpu);
 97#else
 98static inline void xen_init_spinlocks(void)
 99{
100}
101static inline void xen_init_lock_cpu(int cpu)
102{
103}
104static inline void xen_uninit_lock_cpu(int cpu)
105{
106}
107#endif
108
109struct dom0_vga_console_info;
110
111#ifdef CONFIG_XEN_PV_DOM0
112void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
 
113#else
114static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
115				       size_t size)
116{
117}
118#endif
119
120void xen_add_preferred_consoles(void);
121
122void __init xen_init_apic(void);
123
124#ifdef CONFIG_XEN_EFI
125extern void xen_efi_init(struct boot_params *boot_params);
126#else
127static inline void __init xen_efi_init(struct boot_params *boot_params)
128{
129}
130#endif
131
132__visible void xen_irq_enable_direct(void);
133__visible void xen_irq_disable_direct(void);
134__visible unsigned long xen_save_fl_direct(void);
135
136__visible unsigned long xen_read_cr2(void);
137__visible unsigned long xen_read_cr2_direct(void);
138
139/* These are not functions, and cannot be called normally */
140__visible void xen_iret(void);
141
142extern int xen_panic_handler_init(void);
143
144int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
145		    int (*cpu_dead_cb)(unsigned int));
146
147void xen_pin_vcpu(int cpu);
148
149void xen_emergency_restart(void);
 
 
150#ifdef CONFIG_XEN_PV
151void xen_pv_pre_suspend(void);
152void xen_pv_post_suspend(int suspend_cancelled);
 
153#else
154static inline void xen_pv_pre_suspend(void) {}
155static inline void xen_pv_post_suspend(int suspend_cancelled) {}
156#endif
157
158#ifdef CONFIG_XEN_PVHVM
159void xen_hvm_post_suspend(int suspend_cancelled);
160#else
161static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
162#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
163
164#endif /* XEN_OPS_H */

  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 */
 11extern const char xen_failsafe_callback[];
 12
 13void xen_entry_SYSENTER_compat(void);
 14#ifdef CONFIG_X86_64
 15void xen_entry_SYSCALL_64(void);
 16void xen_entry_SYSCALL_compat(void);
 17#endif
 18
 19extern void *xen_initial_gdt;
 20
 21struct trap_info;
 22void xen_copy_trap_info(struct trap_info *traps);
 23
 24DECLARE_PER_CPU_ALIGNED(struct vcpu_info, xen_vcpu_info);
 25DECLARE_PER_CPU(unsigned long, xen_cr3);
 26DECLARE_PER_CPU(unsigned long, xen_current_cr3);
 27
 28extern struct start_info *xen_start_info;
 29extern struct shared_info xen_dummy_shared_info;
 30extern struct shared_info *HYPERVISOR_shared_info;
 31
 32extern bool xen_fifo_events;
 33
 34void xen_setup_mfn_list_list(void);
 35void xen_build_mfn_list_list(void);
 36void xen_setup_machphys_mapping(void);
 37void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
 38void __init xen_reserve_special_pages(void);
 39void __init xen_pt_check_e820(void);
 40
 41void xen_mm_pin_all(void);
 42void xen_mm_unpin_all(void);
 43#ifdef CONFIG_X86_64
 44void __init xen_relocate_p2m(void);
 45#endif
 46
 47bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size);
 48unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
 49void __init xen_inv_extra_mem(void);
 50void __init xen_remap_memory(void);
 51phys_addr_t __init xen_find_free_area(phys_addr_t size);
 52char * __init xen_memory_setup(void);
 53void __init xen_arch_setup(void);
 54void xen_banner(void);
 55void xen_enable_sysenter(void);
 56void xen_enable_syscall(void);
 57void xen_vcpu_restore(void);
 58
 59void xen_hvm_init_shared_info(void);
 60void xen_unplug_emulated_devices(void);
 61
 62void __init xen_build_dynamic_phys_to_machine(void);
 63void __init xen_vmalloc_p2m_tree(void);
 64
 65void xen_init_irq_ops(void);
 66void xen_setup_timer(int cpu);
 67void xen_setup_runstate_info(int cpu);
 68void xen_teardown_timer(int cpu);
 69void xen_setup_cpu_clockevents(void);
 70void xen_save_time_memory_area(void);
 71void xen_restore_time_memory_area(void);
 72void xen_init_time_ops(void);
 73void xen_hvm_init_time_ops(void);
 74
 
 
 75bool xen_vcpu_stolen(int vcpu);
 76
 77void xen_vcpu_setup(int cpu);
 78void xen_vcpu_info_reset(int cpu);
 79void xen_setup_vcpu_info_placement(void);
 80
 81#ifdef CONFIG_SMP
 82void xen_smp_init(void);
 83void __init xen_hvm_smp_init(void);
 84
 85extern cpumask_var_t xen_cpu_initialized_map;
 86#else
 87static inline void xen_smp_init(void) {}
 88static inline void xen_hvm_smp_init(void) {}
 89#endif
 90
 91#ifdef CONFIG_PARAVIRT_SPINLOCKS
 92void __init xen_init_spinlocks(void);
 93void xen_init_lock_cpu(int cpu);
 94void xen_uninit_lock_cpu(int cpu);
 95#else
 96static inline void xen_init_spinlocks(void)
 97{
 98}
 99static inline void xen_init_lock_cpu(int cpu)
100{
101}
102static inline void xen_uninit_lock_cpu(int cpu)
103{
104}
105#endif
106
107struct dom0_vga_console_info;
108
109#ifdef CONFIG_XEN_DOM0
110void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size,
111			 struct screen_info *);
112#else
113static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
114				       size_t size, struct screen_info *si)
115{
116}
117#endif
118
119void xen_add_preferred_consoles(void);
120
121void __init xen_init_apic(void);
122
123#ifdef CONFIG_XEN_EFI
124extern void xen_efi_init(struct boot_params *boot_params);
125#else
126static inline void __init xen_efi_init(struct boot_params *boot_params)
127{
128}
129#endif
130
131__visible void xen_irq_enable_direct(void);
132__visible void xen_irq_disable_direct(void);
133__visible unsigned long xen_save_fl_direct(void);
134
135__visible unsigned long xen_read_cr2(void);
136__visible unsigned long xen_read_cr2_direct(void);
137
138/* These are not functions, and cannot be called normally */
139__visible void xen_iret(void);
140
141extern int xen_panic_handler_init(void);
142
143int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
144		    int (*cpu_dead_cb)(unsigned int));
145
146void xen_pin_vcpu(int cpu);
147
148void xen_emergency_restart(void);
149void xen_force_evtchn_callback(void);
150
151#ifdef CONFIG_XEN_PV
152void xen_pv_pre_suspend(void);
153void xen_pv_post_suspend(int suspend_cancelled);
154void xen_start_kernel(struct start_info *si);
155#else
156static inline void xen_pv_pre_suspend(void) {}
157static inline void xen_pv_post_suspend(int suspend_cancelled) {}
158#endif
159
160#ifdef CONFIG_XEN_PVHVM
161void xen_hvm_post_suspend(int suspend_cancelled);
162#else
163static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
164#endif
165
166/*
167 * The maximum amount of extra memory compared to the base size.  The
168 * main scaling factor is the size of struct page.  At extreme ratios
169 * of base:extra, all the base memory can be filled with page
170 * structures for the extra memory, leaving no space for anything
171 * else.
172 *
173 * 10x seems like a reasonable balance between scaling flexibility and
174 * leaving a practically usable system.
175 */
176#define EXTRA_MEM_RATIO		(10)
177
178void xen_add_extra_mem(unsigned long start_pfn, unsigned long n_pfns);
179
180#endif /* XEN_OPS_H */