summaryrefslogtreecommitdiff
path: root/arch/s390/kvm/kvm-s390.h
blob: f9559b0bd620962d095851fc5c884a759b49996c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/*
 * definition for kvm on s390
 *
 * Copyright IBM Corp. 2008, 2009
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (version 2 only)
 * as published by the Free Software Foundation.
 *
 *    Author(s): Carsten Otte <cotte@de.ibm.com>
 *               Christian Borntraeger <borntraeger@de.ibm.com>
 *               Christian Ehrhardt <ehrhardt@de.ibm.com>
 */

#ifndef ARCH_S390_KVM_S390_H
#define ARCH_S390_KVM_S390_H

#include <linux/hrtimer.h>
#include <linux/kvm.h>
#include <linux/kvm_host.h>

typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);

/* declare vfacilities extern */
extern unsigned long *vfacilities;

int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);

/* Transactional Memory Execution related macros */
#define IS_TE_ENABLED(vcpu)	((vcpu->arch.sie_block->ecb & 0x10))
#define TDB_ADDR		0x1800UL
#define TDB_FORMAT1		1
#define IS_ITDB_VALID(vcpu)	((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))

#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
do { \
	debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
	  d_args); \
} while (0)

#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
do { \
	debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
	  "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
	  d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
	  d_args); \
} while (0)

static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
{
	return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
}

static inline int kvm_is_ucontrol(struct kvm *kvm)
{
#ifdef CONFIG_KVM_S390_UCONTROL
	if (kvm->arch.gmap)
		return 0;
	return 1;
#else
	return 0;
#endif
}

static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
{
	vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
	vcpu->arch.sie_block->ihcpu  = 0xffff;
	kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
}

static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
{
	u32 base2 = vcpu->arch.sie_block->ipb >> 28;
	u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);

	return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}

static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
					      u64 *address1, u64 *address2)
{
	u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
	u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
	u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
	u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;

	*address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
	*address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}

static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
{
	if (r1)
		*r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
	if (r2)
		*r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
}

static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
{
	u32 base2 = vcpu->arch.sie_block->ipb >> 28;
	u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
			((vcpu->arch.sie_block->ipb & 0xff00) << 4);
	/* The displacement is a 20bit _SIGNED_ value */
	if (disp2 & 0x80000)
		disp2+=0xfff00000;

	return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
}

static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
{
	u32 base2 = vcpu->arch.sie_block->ipb >> 28;
	u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);

	return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
}

/* Set the condition code in the guest program status word */
static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
{
	vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
	vcpu->arch.sie_block->gpsw.mask |= cc << 44;
}

int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
void kvm_s390_tasklet(unsigned long parm);
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
int __must_check kvm_s390_inject_vm(struct kvm *kvm,
				    struct kvm_s390_interrupt *s390int);
int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
				      struct kvm_s390_interrupt *s390int);
int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
						    u64 cr6, u64 schid);

/* implemented in priv.c */
int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);

/* implemented in sigp.c */
int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);

/* implemented in kvm-s390.c */
int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
void s390_vcpu_block(struct kvm_vcpu *vcpu);
void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
void exit_sie(struct kvm_vcpu *vcpu);
void exit_sie_sync(struct kvm_vcpu *vcpu);
/* implemented in diag.c */
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);

#endif