1#include <linux/types.h>
 2#include <linux/clockchips.h>
 3
 4#include <xen/interface/xen.h>
 5#include <xen/grant_table.h>
 6#include <xen/events.h>
 7
 8#include <asm/xen/hypercall.h>
 9#include <asm/xen/page.h>
10#include <asm/fixmap.h>
11
12#include "xen-ops.h"
13#include "mmu.h"
14
15void xen_arch_pre_suspend(void)
16{
17	xen_start_info->store_mfn = mfn_to_pfn(xen_start_info->store_mfn);
18	xen_start_info->console.domU.mfn =
19		mfn_to_pfn(xen_start_info->console.domU.mfn);
20
21	BUG_ON(!irqs_disabled());
22
23	HYPERVISOR_shared_info = &xen_dummy_shared_info;
24	if (HYPERVISOR_update_va_mapping(fix_to_virt(FIX_PARAVIRT_BOOTMAP),
25					 __pte_ma(0), 0))
26		BUG();
27}
28
29void xen_arch_hvm_post_suspend(int suspend_cancelled)
30{
31#ifdef CONFIG_XEN_PVHVM
32	int cpu;
33	xen_hvm_init_shared_info();
34	xen_callback_vector();
35	xen_unplug_emulated_devices();
36	if (xen_feature(XENFEAT_hvm_safe_pvclock)) {
37		for_each_online_cpu(cpu) {
38			xen_setup_runstate_info(cpu);
39		}
40	}
41#endif
42}
43
44void xen_arch_post_suspend(int suspend_cancelled)
45{
46	xen_build_mfn_list_list();
47
48	xen_setup_shared_info();
49
50	if (suspend_cancelled) {
51		xen_start_info->store_mfn =
52			pfn_to_mfn(xen_start_info->store_mfn);
53		xen_start_info->console.domU.mfn =
54			pfn_to_mfn(xen_start_info->console.domU.mfn);
55	} else {
56#ifdef CONFIG_SMP
57		BUG_ON(xen_cpu_initialized_map == NULL);
58		cpumask_copy(xen_cpu_initialized_map, cpu_online_mask);
59#endif
60		xen_vcpu_restore();
61	}
62
63}
64
65static void xen_vcpu_notify_restore(void *data)
66{
67	unsigned long reason = (unsigned long)data;
68
69	/* Boot processor notified via generic timekeeping_resume() */
70	if ( smp_processor_id() == 0)
71		return;
72
73	clockevents_notify(reason, NULL);
74}
75
76void xen_arch_resume(void)
77{
78	on_each_cpu(xen_vcpu_notify_restore,
79		    (void *)CLOCK_EVT_NOTIFY_RESUME, 1);
80}