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Heiko Carstensb0c632d2008-03-25 18:47:20 +01001/*
Heiko Carstensa53c8fa2012-07-20 11:15:04 +02002 * definition for kvm on s390
Heiko Carstensb0c632d2008-03-25 18:47:20 +01003 *
Heiko Carstensa53c8fa2012-07-20 11:15:04 +02004 * Copyright IBM Corp. 2008, 2009
Heiko Carstensb0c632d2008-03-25 18:47:20 +01005 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License (version 2 only)
8 * as published by the Free Software Foundation.
9 *
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 * Christian Borntraeger <borntraeger@de.ibm.com>
Christian Ehrhardt628eb9b2009-05-25 13:40:51 +020012 * Christian Ehrhardt <ehrhardt@de.ibm.com>
Heiko Carstensb0c632d2008-03-25 18:47:20 +010013 */
14
15#ifndef ARCH_S390_KVM_S390_H
16#define ARCH_S390_KVM_S390_H
Christian Borntraeger8f2abe62008-03-25 18:47:23 +010017
Christian Borntraegerca872302009-05-12 17:21:49 +020018#include <linux/hrtimer.h>
Carsten Otteba5c1e92008-03-25 18:47:26 +010019#include <linux/kvm.h>
Christian Borntraeger8f2abe62008-03-25 18:47:23 +010020#include <linux/kvm_host.h>
21
Christian Ehrhardt628eb9b2009-05-25 13:40:51 +020022/* The current code can have up to 256 pages for virtio */
23#define VIRTIODESCSPACE (256ul * 4096ul)
24
Christian Borntraeger8f2abe62008-03-25 18:47:23 +010025typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
26
Christian Ehrhardt9ace9032009-05-20 15:34:55 +020027/* negativ values are error codes, positive values for internal conditions */
28#define SIE_INTERCEPT_RERUNVCPU (1<<0)
Carsten Ottee168bf82012-01-04 10:25:22 +010029#define SIE_INTERCEPT_UCONTROL (1<<1)
Christian Borntraeger8f2abe62008-03-25 18:47:23 +010030int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
31
Heiko Carstensb0c632d2008-03-25 18:47:20 +010032#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
33do { \
34 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
35 d_args); \
36} while (0)
37
38#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
39do { \
40 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
41 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
42 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
43 d_args); \
44} while (0)
Carsten Otteba5c1e92008-03-25 18:47:26 +010045
46static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
47{
48 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
49}
50
Carsten Ottee08b9632012-01-04 10:25:20 +010051static inline int kvm_is_ucontrol(struct kvm *kvm)
52{
53#ifdef CONFIG_KVM_S390_UCONTROL
54 if (kvm->arch.gmap)
55 return 0;
56 return 1;
57#else
58 return 0;
59#endif
60}
Christian Borntraeger8d26cf72012-01-11 11:19:32 +010061
62static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
63{
64 vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
65 vcpu->arch.sie_block->ihcpu = 0xffff;
66}
67
Carsten Otteba5c1e92008-03-25 18:47:26 +010068int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
Christian Borntraegerca872302009-05-12 17:21:49 +020069enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
70void kvm_s390_tasklet(unsigned long parm);
Carsten Otteba5c1e92008-03-25 18:47:26 +010071void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
72int kvm_s390_inject_vm(struct kvm *kvm,
73 struct kvm_s390_interrupt *s390int);
74int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
75 struct kvm_s390_interrupt *s390int);
76int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
Christian Ehrhardt9ace9032009-05-20 15:34:55 +020077int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
Christian Borntraeger453423d2008-03-25 18:47:29 +010078
79/* implemented in priv.c */
Christian Borntraeger70455a32009-01-22 10:28:29 +010080int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
Christian Borntraegerbb25b9b2011-07-24 10:48:17 +020081int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
Cornelia Huck8c3f61e2012-04-24 09:24:44 +020082int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
Christian Borntraeger5288fbf2008-03-25 18:47:31 +010083
84/* implemented in sigp.c */
85int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
86
87/* implemented in kvm-s390.c */
Christian Borntraeger971eb772010-06-12 08:54:13 +020088int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
Christian Borntraeger5288fbf2008-03-25 18:47:31 +010089 unsigned long addr);
Christian Borntraegere28acfe2008-03-25 18:47:34 +010090/* implemented in diag.c */
91int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
92
Heiko Carstensb0c632d2008-03-25 18:47:20 +010093#endif