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 extern bool xen_fifo_events; 33 34 void xen_setup_mfn_list_list(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 __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_hvm_init_shared_info(void); 59 void xen_unplug_emulated_devices(void); 60 61 void __init xen_build_dynamic_phys_to_machine(void); 62 void __init xen_vmalloc_p2m_tree(void); 63 64 void xen_init_irq_ops(void); 65 void xen_setup_timer(int cpu); 66 void xen_setup_runstate_info(int cpu); 67 void xen_teardown_timer(int cpu); 68 void xen_setup_cpu_clockevents(void); 69 void xen_save_time_memory_area(void); 70 void xen_restore_time_memory_area(void); 71 void xen_init_time_ops(void); 72 void xen_hvm_init_time_ops(void); 73 74 irqreturn_t xen_debug_interrupt(int irq, void *dev_id); 75 76 bool xen_vcpu_stolen(int vcpu); 77 78 extern int xen_have_vcpu_info_placement; 79 80 int xen_vcpu_setup(int cpu); 81 void xen_vcpu_info_reset(int cpu); 82 void xen_setup_vcpu_info_placement(void); 83 84 #ifdef CONFIG_SMP 85 void xen_smp_init(void); 86 void __init xen_hvm_smp_init(void); 87 88 extern cpumask_var_t xen_cpu_initialized_map; 89 #else 90 static inline void xen_smp_init(void) {} 91 static inline void xen_hvm_smp_init(void) {} 92 #endif 93 94 #ifdef CONFIG_PARAVIRT_SPINLOCKS 95 void __init xen_init_spinlocks(void); 96 void xen_init_lock_cpu(int cpu); 97 void xen_uninit_lock_cpu(int cpu); 98 #else 99 static inline void xen_init_spinlocks(void) 100 { 101 } 102 static inline void xen_init_lock_cpu(int cpu) 103 { 104 } 105 static inline void xen_uninit_lock_cpu(int cpu) 106 { 107 } 108 #endif 109 110 struct dom0_vga_console_info; 111 112 #ifdef CONFIG_XEN_DOM0 113 void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size); 114 #else 115 static inline void __init xen_init_vga(const struct dom0_vga_console_info *info, 116 size_t size) 117 { 118 } 119 #endif 120 121 void __init xen_init_apic(void); 122 123 #ifdef CONFIG_XEN_EFI 124 extern void xen_efi_init(struct boot_params *boot_params); 125 #else 126 static 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); 140 141 extern int xen_panic_handler_init(void); 142 143 int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int), 144 int (*cpu_dead_cb)(unsigned int)); 145 146 void xen_pin_vcpu(int cpu); 147 148 void xen_emergency_restart(void); 149 #ifdef CONFIG_XEN_PV 150 void xen_pv_pre_suspend(void); 151 void xen_pv_post_suspend(int suspend_cancelled); 152 #else 153 static inline void xen_pv_pre_suspend(void) {} 154 static inline void xen_pv_post_suspend(int suspend_cancelled) {} 155 #endif 156 157 #ifdef CONFIG_XEN_PVHVM 158 void xen_hvm_post_suspend(int suspend_cancelled); 159 #else 160 static inline void xen_hvm_post_suspend(int suspend_cancelled) {} 161 #endif 162 163 #endif /* XEN_OPS_H */ 164