arch/x86/xen/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 */
  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 void xen_setup_mfn_list_list(void);
  34 void xen_build_mfn_list_list(void);
  35 void xen_setup_machphys_mapping(void);
  36 void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
  37 void xen_reserve_top(void);
  38 void __init xen_reserve_special_pages(void);
  39 void __init xen_pt_check_e820(void);
  40
  41 void xen_mm_pin_all(void);
  42 void xen_mm_unpin_all(void);
  43 #ifdef CONFIG_X86_64
  44 void __init xen_relocate_p2m(void);
  45 #endif
  46
  47 bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size);
  48 unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
  49 void __init xen_inv_extra_mem(void);
  50 void __init xen_remap_memory(void);
  51 phys_addr_t __init xen_find_free_area(phys_addr_t size);
  52 char * __init xen_memory_setup(void);
  53 void __init xen_arch_setup(void);
  54 void xen_enable_sysenter(void);
  55 void xen_enable_syscall(void);
  56 void xen_vcpu_restore(void);
  57
  58 void xen_callback_vector(void);
  59 void xen_hvm_init_shared_info(void);
  60 void xen_unplug_emulated_devices(void);
  61
  62 void __init xen_build_dynamic_phys_to_machine(void);
  63 void __init xen_vmalloc_p2m_tree(void);
  64
  65 void xen_init_irq_ops(void);
  66 void xen_setup_timer(int cpu);
  67 void xen_setup_runstate_info(int cpu);
  68 void xen_teardown_timer(int cpu);
  69 void xen_setup_cpu_clockevents(void);
  70 void xen_save_time_memory_area(void);
  71 void xen_restore_time_memory_area(void);
  72 void xen_init_time_ops(void);
  73 void xen_hvm_init_time_ops(void);
  74
  75 irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
  76
  77 bool xen_vcpu_stolen(int vcpu);
  78
  79 extern int xen_have_vcpu_info_placement;
  80
  81 int xen_vcpu_setup(int cpu);
  82 void xen_vcpu_info_reset(int cpu);
  83 void xen_setup_vcpu_info_placement(void);
  84
  85 #ifdef CONFIG_SMP
  86 void xen_smp_init(void);
  87 void __init xen_hvm_smp_init(void);
  88
  89 extern cpumask_var_t xen_cpu_initialized_map;
  90 #else
  91 static inline void xen_smp_init(void) {}
  92 static inline void xen_hvm_smp_init(void) {}
  93 #endif
  94
  95 #ifdef CONFIG_PARAVIRT_SPINLOCKS
  96 void __init xen_init_spinlocks(void);
  97 void xen_init_lock_cpu(int cpu);
  98 void xen_uninit_lock_cpu(int cpu);
  99 #else
 100 static inline void xen_init_spinlocks(void)
 101 {
 102 }
 103 static inline void xen_init_lock_cpu(int cpu)
 104 {
 105 }
 106 static inline void xen_uninit_lock_cpu(int cpu)
 107 {
 108 }
 109 #endif
 110
 111 struct dom0_vga_console_info;
 112
 113 #ifdef CONFIG_XEN_DOM0
 114 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
 115 #else
 116 static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
 117                                        size_t size)
 118 {
 119 }
 120 #endif
 121
 122 void __init xen_init_apic(void);
 123
 124 #ifdef CONFIG_XEN_EFI
 125 extern void xen_efi_init(struct boot_params *boot_params);
 126 #else
 127 static 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 __visible void xen_restore_fl_direct(unsigned long);
 136
 137 __visible unsigned long xen_read_cr2(void);
 138 __visible unsigned long xen_read_cr2_direct(void);
 139
 140 /* These are not functions, and cannot be called normally */
 141 __visible void xen_iret(void);
 142 __visible void xen_sysret32(void);
 143 __visible void xen_sysret64(void);
 144
 145 extern int xen_panic_handler_init(void);
 146
 147 int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
 148                     int (*cpu_dead_cb)(unsigned int));
 149
 150 void xen_pin_vcpu(int cpu);
 151
 152 void xen_emergency_restart(void);
 153 #ifdef CONFIG_XEN_PV
 154 void xen_pv_pre_suspend(void);
 155 void xen_pv_post_suspend(int suspend_cancelled);
 156 #else
 157 static inline void xen_pv_pre_suspend(void) {}
 158 static inline void xen_pv_post_suspend(int suspend_cancelled) {}
 159 #endif
 160
 161 #ifdef CONFIG_XEN_PVHVM
 162 void xen_hvm_post_suspend(int suspend_cancelled);
 163 #else
 164 static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
 165 #endif
 166
 167 #endif /* XEN_OPS_H */