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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 */
11extern const char xen_failsafe_callback[];
12
13void xen_entry_SYSENTER_compat(void);
14#ifdef CONFIG_X86_64
15void xen_entry_SYSCALL_64(void);
16void xen_entry_SYSCALL_compat(void);
17#endif
18
19extern void *xen_initial_gdt;
20
21struct trap_info;
22void xen_copy_trap_info(struct trap_info *traps);
23
24DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
25DECLARE_PER_CPU(unsigned long, xen_cr3);
26DECLARE_PER_CPU(unsigned long, xen_current_cr3);
27
28extern struct start_info *xen_start_info;
29extern struct shared_info xen_dummy_shared_info;
30extern struct shared_info *HYPERVISOR_shared_info;
31
32extern bool xen_fifo_events;
33
34void xen_setup_mfn_list_list(void);
35void xen_build_mfn_list_list(void);
36void xen_setup_machphys_mapping(void);
37void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
38void __init xen_reserve_special_pages(void);
39void __init xen_pt_check_e820(void);
40
41void xen_mm_pin_all(void);
42void xen_mm_unpin_all(void);
43#ifdef CONFIG_X86_64
44void __init xen_relocate_p2m(void);
45#endif
46
47bool __init xen_is_e820_reserved(phys_addr_t start, phys_addr_t size);
48unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
49void __init xen_inv_extra_mem(void);
50void __init xen_remap_memory(void);
51phys_addr_t __init xen_find_free_area(phys_addr_t size);
52char * __init xen_memory_setup(void);
53void __init xen_arch_setup(void);
54void xen_banner(void);
55void xen_enable_sysenter(void);
56void xen_enable_syscall(void);
57void xen_vcpu_restore(void);
58
59void xen_hvm_init_shared_info(void);
60void xen_unplug_emulated_devices(void);
61
62void __init xen_build_dynamic_phys_to_machine(void);
63void __init xen_vmalloc_p2m_tree(void);
64
65void xen_init_irq_ops(void);
66void xen_setup_timer(int cpu);
67void xen_setup_runstate_info(int cpu);
68void xen_teardown_timer(int cpu);
69void xen_setup_cpu_clockevents(void);
70void xen_save_time_memory_area(void);
71void xen_restore_time_memory_area(void);
72void xen_init_time_ops(void);
73void xen_hvm_init_time_ops(void);
74
75irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
76
77bool xen_vcpu_stolen(int vcpu);
78
79void xen_vcpu_setup(int cpu);
80void xen_vcpu_info_reset(int cpu);
81void xen_setup_vcpu_info_placement(void);
82
83#ifdef CONFIG_SMP
84void xen_smp_init(void);
85void __init xen_hvm_smp_init(void);
86
87extern cpumask_var_t xen_cpu_initialized_map;
88#else
89static inline void xen_smp_init(void) {}
90static inline void xen_hvm_smp_init(void) {}
91#endif
92
93#ifdef CONFIG_PARAVIRT_SPINLOCKS
94void __init xen_init_spinlocks(void);
95void xen_init_lock_cpu(int cpu);
96void xen_uninit_lock_cpu(int cpu);
97#else
98static inline void xen_init_spinlocks(void)
99{
100}
101static inline void xen_init_lock_cpu(int cpu)
102{
103}
104static inline void xen_uninit_lock_cpu(int cpu)
105{
106}
107#endif
108
109struct dom0_vga_console_info;
110
111#ifdef CONFIG_XEN_PV_DOM0
112void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
113#else
114static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
115 size_t size)
116{
117}
118#endif
119
120void xen_add_preferred_consoles(void);
121
122void __init xen_init_apic(void);
123
124#ifdef CONFIG_XEN_EFI
125extern void xen_efi_init(struct boot_params *boot_params);
126#else
127static 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
136__visible unsigned long xen_read_cr2(void);
137__visible unsigned long xen_read_cr2_direct(void);
138
139/* These are not functions, and cannot be called normally */
140__visible void xen_iret(void);
141
142extern int xen_panic_handler_init(void);
143
144int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
145 int (*cpu_dead_cb)(unsigned int));
146
147void xen_pin_vcpu(int cpu);
148
149void xen_emergency_restart(void);
150#ifdef CONFIG_XEN_PV
151void xen_pv_pre_suspend(void);
152void xen_pv_post_suspend(int suspend_cancelled);
153#else
154static inline void xen_pv_pre_suspend(void) {}
155static inline void xen_pv_post_suspend(int suspend_cancelled) {}
156#endif
157
158#ifdef CONFIG_XEN_PVHVM
159void xen_hvm_post_suspend(int suspend_cancelled);
160#else
161static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
162#endif
163
164#endif /* 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 <linux/linkage.h>
9
10#include <xen/interface/xenpmu.h>
11#include <xen/xen-ops.h>
12
13#include <asm/page.h>
14
15#include <trace/events/xen.h>
16
17/* These are code, but not functions. Defined in entry.S */
18extern const char xen_failsafe_callback[];
19
20void xen_entry_SYSENTER_compat(void);
21#ifdef CONFIG_X86_64
22void xen_entry_SYSCALL_64(void);
23void xen_entry_SYSCALL_compat(void);
24#endif
25
26extern void *xen_initial_gdt;
27
28struct trap_info;
29void xen_copy_trap_info(struct trap_info *traps);
30
31DECLARE_PER_CPU_ALIGNED(struct vcpu_info, xen_vcpu_info);
32DECLARE_PER_CPU(unsigned long, xen_cr3);
33
34extern struct start_info *xen_start_info;
35extern struct shared_info xen_dummy_shared_info;
36extern struct shared_info *HYPERVISOR_shared_info;
37
38void xen_setup_mfn_list_list(void);
39void xen_build_mfn_list_list(void);
40void xen_setup_machphys_mapping(void);
41void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
42void __init xen_reserve_special_pages(void);
43void __init xen_pt_check_e820(void);
44
45void xen_mm_pin_all(void);
46void xen_mm_unpin_all(void);
47#ifdef CONFIG_X86_64
48void __init xen_relocate_p2m(void);
49#endif
50void __init xen_do_remap_nonram(void);
51void __init xen_add_remap_nonram(phys_addr_t maddr, phys_addr_t paddr,
52 unsigned long size);
53
54void __init xen_chk_is_e820_usable(phys_addr_t start, phys_addr_t size,
55 const char *component);
56unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
57void __init xen_inv_extra_mem(void);
58void __init xen_remap_memory(void);
59phys_addr_t __init xen_find_free_area(phys_addr_t size);
60char * __init xen_memory_setup(void);
61void __init xen_arch_setup(void);
62void xen_banner(void);
63void xen_enable_sysenter(void);
64void xen_enable_syscall(void);
65void xen_vcpu_restore(void);
66
67void xen_hvm_init_shared_info(void);
68void xen_unplug_emulated_devices(void);
69
70void __init xen_build_dynamic_phys_to_machine(void);
71void __init xen_vmalloc_p2m_tree(void);
72
73void xen_init_irq_ops(void);
74void xen_setup_timer(int cpu);
75void xen_setup_runstate_info(int cpu);
76void xen_teardown_timer(int cpu);
77void xen_setup_cpu_clockevents(void);
78void xen_save_time_memory_area(void);
79void xen_restore_time_memory_area(void);
80void xen_init_time_ops(void);
81void xen_hvm_init_time_ops(void);
82
83bool xen_vcpu_stolen(int vcpu);
84
85void xen_vcpu_setup(int cpu);
86void xen_vcpu_info_reset(int cpu);
87void xen_setup_vcpu_info_placement(void);
88
89#ifdef CONFIG_SMP
90void xen_smp_init(void);
91void __init xen_hvm_smp_init(void);
92
93extern cpumask_var_t xen_cpu_initialized_map;
94#else
95static inline void xen_smp_init(void) {}
96static inline void xen_hvm_smp_init(void) {}
97#endif
98
99#ifdef CONFIG_PARAVIRT_SPINLOCKS
100void __init xen_init_spinlocks(void);
101void xen_init_lock_cpu(int cpu);
102void xen_uninit_lock_cpu(int cpu);
103#else
104static inline void xen_init_spinlocks(void)
105{
106}
107static inline void xen_init_lock_cpu(int cpu)
108{
109}
110static inline void xen_uninit_lock_cpu(int cpu)
111{
112}
113#endif
114
115struct dom0_vga_console_info;
116
117#ifdef CONFIG_XEN_DOM0
118void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size,
119 struct screen_info *);
120#else
121static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
122 size_t size, struct screen_info *si)
123{
124}
125#endif
126
127void xen_add_preferred_consoles(void);
128
129void __init xen_init_apic(void);
130
131#ifdef CONFIG_XEN_EFI
132extern void xen_efi_init(struct boot_params *boot_params);
133#else
134static inline void __init xen_efi_init(struct boot_params *boot_params)
135{
136}
137#endif
138
139__visible void xen_irq_enable_direct(void);
140__visible void xen_irq_disable_direct(void);
141__visible unsigned long xen_save_fl_direct(void);
142
143__visible unsigned long xen_read_cr2(void);
144__visible unsigned long xen_read_cr2_direct(void);
145
146/* These are not functions, and cannot be called normally */
147__visible void xen_iret(void);
148
149extern int xen_panic_handler_init(void);
150
151int xen_cpuhp_setup(int (*cpu_up_prepare_cb)(unsigned int),
152 int (*cpu_dead_cb)(unsigned int));
153
154void xen_pin_vcpu(int cpu);
155
156void xen_emergency_restart(void);
157void xen_force_evtchn_callback(void);
158
159#ifdef CONFIG_XEN_PV
160void xen_pv_pre_suspend(void);
161void xen_pv_post_suspend(int suspend_cancelled);
162void xen_start_kernel(struct start_info *si);
163#else
164static inline void xen_pv_pre_suspend(void) {}
165static inline void xen_pv_post_suspend(int suspend_cancelled) {}
166#endif
167
168#ifdef CONFIG_XEN_PVHVM
169void xen_hvm_post_suspend(int suspend_cancelled);
170#else
171static inline void xen_hvm_post_suspend(int suspend_cancelled) {}
172#endif
173
174/*
175 * The maximum amount of extra memory compared to the base size. The
176 * main scaling factor is the size of struct page. At extreme ratios
177 * of base:extra, all the base memory can be filled with page
178 * structures for the extra memory, leaving no space for anything
179 * else.
180 *
181 * 10x seems like a reasonable balance between scaling flexibility and
182 * leaving a practically usable system.
183 */
184#define EXTRA_MEM_RATIO (10)
185
186void xen_add_extra_mem(unsigned long start_pfn, unsigned long n_pfns);
187
188struct dentry * __init xen_init_debugfs(void);
189
190enum pt_level {
191 PT_PGD,
192 PT_P4D,
193 PT_PUD,
194 PT_PMD,
195 PT_PTE
196};
197
198bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
199void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
200unsigned long xen_read_cr2_direct(void);
201void xen_init_mmu_ops(void);
202void xen_hvm_init_mmu_ops(void);
203
204/* Multicalls */
205struct multicall_space
206{
207 struct multicall_entry *mc;
208 void *args;
209};
210
211/* Allocate room for a multicall and its args */
212struct multicall_space __xen_mc_entry(size_t args);
213
214DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags);
215
216/* Call to start a batch of multiple __xen_mc_entry()s. Must be
217 paired with xen_mc_issue() */
218static inline void xen_mc_batch(void)
219{
220 unsigned long flags;
221
222 /* need to disable interrupts until this entry is complete */
223 local_irq_save(flags);
224 trace_xen_mc_batch(xen_get_lazy_mode());
225 __this_cpu_write(xen_mc_irq_flags, flags);
226}
227
228static inline struct multicall_space xen_mc_entry(size_t args)
229{
230 xen_mc_batch();
231 return __xen_mc_entry(args);
232}
233
234/* Flush all pending multicalls */
235void xen_mc_flush(void);
236
237/* Issue a multicall if we're not in a lazy mode */
238static inline void xen_mc_issue(unsigned mode)
239{
240 trace_xen_mc_issue(mode);
241
242 if ((xen_get_lazy_mode() & mode) == 0)
243 xen_mc_flush();
244
245 /* restore flags saved in xen_mc_batch */
246 local_irq_restore(this_cpu_read(xen_mc_irq_flags));
247}
248
249/* Set up a callback to be called when the current batch is flushed */
250void xen_mc_callback(void (*fn)(void *), void *data);
251
252/*
253 * Try to extend the arguments of the previous multicall command. The
254 * previous command's op must match. If it does, then it attempts to
255 * extend the argument space allocated to the multicall entry by
256 * arg_size bytes.
257 *
258 * The returned multicall_space will return with mc pointing to the
259 * command on success, or NULL on failure, and args pointing to the
260 * newly allocated space.
261 */
262struct multicall_space xen_mc_extend_args(unsigned long op, size_t arg_size);
263
264/* Do percpu data initialization for multicalls. */
265void mc_percpu_init(unsigned int cpu);
266
267extern bool is_xen_pmu;
268
269irqreturn_t xen_pmu_irq_handler(int irq, void *dev_id);
270#ifdef CONFIG_XEN_HAVE_VPMU
271void xen_pmu_init(int cpu);
272void xen_pmu_finish(int cpu);
273#else
274static inline void xen_pmu_init(int cpu) {}
275static inline void xen_pmu_finish(int cpu) {}
276#endif
277bool pmu_msr_read(unsigned int msr, uint64_t *val, int *err);
278bool pmu_msr_write(unsigned int msr, uint32_t low, uint32_t high, int *err);
279int pmu_apic_update(uint32_t reg);
280unsigned long long xen_read_pmc(int counter);
281
282#ifdef CONFIG_SMP
283
284void asm_cpu_bringup_and_idle(void);
285asmlinkage void cpu_bringup_and_idle(void);
286
287extern void xen_send_IPI_mask(const struct cpumask *mask,
288 int vector);
289extern void xen_send_IPI_mask_allbutself(const struct cpumask *mask,
290 int vector);
291extern void xen_send_IPI_allbutself(int vector);
292extern void xen_send_IPI_all(int vector);
293extern void xen_send_IPI_self(int vector);
294
295extern int xen_smp_intr_init(unsigned int cpu);
296extern void xen_smp_intr_free(unsigned int cpu);
297int xen_smp_intr_init_pv(unsigned int cpu);
298void xen_smp_intr_free_pv(unsigned int cpu);
299
300void xen_smp_count_cpus(void);
301void xen_smp_cpus_done(unsigned int max_cpus);
302
303void xen_smp_send_reschedule(int cpu);
304void xen_smp_send_call_function_ipi(const struct cpumask *mask);
305void xen_smp_send_call_function_single_ipi(int cpu);
306
307void __noreturn xen_cpu_bringup_again(unsigned long stack);
308
309struct xen_common_irq {
310 int irq;
311 char *name;
312};
313#else /* CONFIG_SMP */
314
315static inline int xen_smp_intr_init(unsigned int cpu)
316{
317 return 0;
318}
319static inline void xen_smp_intr_free(unsigned int cpu) {}
320
321static inline int xen_smp_intr_init_pv(unsigned int cpu)
322{
323 return 0;
324}
325static inline void xen_smp_intr_free_pv(unsigned int cpu) {}
326static inline void xen_smp_count_cpus(void) { }
327#endif /* CONFIG_SMP */
328
329#ifdef CONFIG_XEN_PV
330void xen_hypercall_pv(void);
331#endif
332void xen_hypercall_hvm(void);
333void xen_hypercall_amd(void);
334void xen_hypercall_intel(void);
335void xen_hypercall_setfunc(void);
336void *__xen_hypercall_setfunc(void);
337
338#endif /* XEN_OPS_H */