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