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 char * xen_auto_xlated_memory_setup(void); 54 void __init xen_arch_setup(void); 55 void xen_enable_sysenter(void); 56 void xen_enable_syscall(void); 57 void xen_vcpu_restore(void); 58 59 void xen_callback_vector(void); 60 void xen_hvm_init_shared_info(void); 61 void xen_unplug_emulated_devices(void); 62 63 void __init xen_build_dynamic_phys_to_machine(void); 64 void __init xen_vmalloc_p2m_tree(void); 65 66 void xen_init_irq_ops(void); 67 void xen_setup_timer(int cpu); 68 void xen_setup_runstate_info(int cpu); 69 void xen_teardown_timer(int cpu); 70 void xen_setup_cpu_clockevents(void); 71 void xen_save_time_memory_area(void); 72 void xen_restore_time_memory_area(void); 73 void xen_init_time_ops(void); 74 void xen_hvm_init_time_ops(void); 75 76 irqreturn_t xen_debug_interrupt(int irq, void *dev_id); 77 78 bool xen_vcpu_stolen(int vcpu); 79 80 extern int xen_have_vcpu_info_placement; 81 82 int xen_vcpu_setup(int cpu); 83 void xen_vcpu_info_reset(int cpu); 84 void xen_setup_vcpu_info_placement(void); 85 86 #ifdef CONFIG_SMP 87 void xen_smp_init(void); 88 void __init xen_hvm_smp_init(void); 89 90 extern cpumask_var_t xen_cpu_initialized_map; 91 #else 92 static inline void xen_smp_init(void) {} 93 static inline void xen_hvm_smp_init(void) {} 94 #endif 95 96 #ifdef CONFIG_PARAVIRT_SPINLOCKS 97 void __init xen_init_spinlocks(void); 98 void xen_init_lock_cpu(int cpu); 99 void xen_uninit_lock_cpu(int cpu); 100 #else 101 static inline void xen_init_spinlocks(void) 102 { 103 } 104 static inline void xen_init_lock_cpu(int cpu) 105 { 106 } 107 static inline void xen_uninit_lock_cpu(int cpu) 108 { 109 } 110 #endif 111 112 struct dom0_vga_console_info; 113 114 #ifdef CONFIG_XEN_DOM0 115 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size); 116 #else 117 static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, 118 size_t size) 119 { 120 } 121 #endif 122 123 void __init xen_init_apic(void); 124 125 #ifdef CONFIG_XEN_EFI 126 extern void xen_efi_init(void); 127 #else 128 static inline void __init xen_efi_init(void) 129 { 130 } 131 #endif 132 133 __visible void xen_irq_enable_direct(void); 134 __visible void xen_irq_disable_direct(void); 135 __visible unsigned long xen_save_fl_direct(void); 136 __visible void xen_restore_fl_direct(unsigned long); 137 138 /* These are not functions, and cannot be called normally */ 139 __visible void xen_iret(void); 140 __visible void xen_sysret32(void); 141 __visible void xen_sysret64(void); 142 143 extern int xen_panic_handler_init(void); 144 145 int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int), 146 int (*cpu_dead_cb)(unsigned int)); 147 148 void xen_pin_vcpu(int cpu); 149 150 void xen_emergency_restart(void); 151 #ifdef CONFIG_XEN_PV 152 void xen_pv_pre_suspend(void); 153 void xen_pv_post_suspend(int suspend_cancelled); 154 #else 155 static inline void xen_pv_pre_suspend(void) {} 156 static inline void xen_pv_post_suspend(int suspend_cancelled) {} 157 #endif 158 159 #ifdef CONFIG_XEN_PVHVM 160 void xen_hvm_post_suspend(int suspend_cancelled); 161 #else 162 static inline void xen_hvm_post_suspend(int suspend_cancelled) {} 163 #endif 164 165 #endif /* XEN_OPS_H */ 166