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_setup_shared_info(void); 35 void xen_build_mfn_list_list(void); 36 void xen_setup_machphys_mapping(void); 37 void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn); 38 void xen_reserve_top(void); 39 void __init xen_reserve_special_pages(void); 40 void __init xen_pt_check_e820(void); 41 42 void xen_mm_pin_all(void); 43 void xen_mm_unpin_all(void); 44 #ifdef CONFIG_X86_64 45 void __init xen_relocate_p2m(void); 46 #endif 47 48 bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size); 49 unsigned long __ref xen_chk_extra_mem(unsigned long pfn); 50 void __init xen_inv_extra_mem(void); 51 void __init xen_remap_memory(void); 52 phys_addr_t __init xen_find_free_area(phys_addr_t size); 53 char * __init xen_memory_setup(void); 54 char * xen_auto_xlated_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 u64 xen_clocksource_read(void); 72 void xen_setup_cpu_clockevents(void); 73 void xen_save_time_memory_area(void); 74 void xen_restore_time_memory_area(void); 75 void __ref xen_init_time_ops(void); 76 void __init xen_hvm_init_time_ops(void); 77 78 irqreturn_t xen_debug_interrupt(int irq, void *dev_id); 79 80 bool xen_vcpu_stolen(int vcpu); 81 82 extern int xen_have_vcpu_info_placement; 83 84 int xen_vcpu_setup(int cpu); 85 void xen_vcpu_info_reset(int cpu); 86 void xen_setup_vcpu_info_placement(void); 87 88 #ifdef CONFIG_SMP 89 void xen_smp_init(void); 90 void __init xen_hvm_smp_init(void); 91 92 extern cpumask_var_t xen_cpu_initialized_map; 93 #else 94 static inline void xen_smp_init(void) {} 95 static inline void xen_hvm_smp_init(void) {} 96 #endif 97 98 #ifdef CONFIG_PARAVIRT_SPINLOCKS 99 void __init xen_init_spinlocks(void); 100 void xen_init_lock_cpu(int cpu); 101 void xen_uninit_lock_cpu(int cpu); 102 #else 103 static inline void xen_init_spinlocks(void) 104 { 105 } 106 static inline void xen_init_lock_cpu(int cpu) 107 { 108 } 109 static inline void xen_uninit_lock_cpu(int cpu) 110 { 111 } 112 #endif 113 114 struct dom0_vga_console_info; 115 116 #ifdef CONFIG_XEN_DOM0 117 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size); 118 #else 119 static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, 120 size_t size) 121 { 122 } 123 #endif 124 125 void __init xen_init_apic(void); 126 127 #ifdef CONFIG_XEN_EFI 128 extern void xen_efi_init(void); 129 #else 130 static inline void __init xen_efi_init(void) 131 { 132 } 133 #endif 134 135 __visible void xen_irq_enable_direct(void); 136 __visible void xen_irq_disable_direct(void); 137 __visible unsigned long xen_save_fl_direct(void); 138 __visible void xen_restore_fl_direct(unsigned long); 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 */ 168