2 * definition for kvm on s390
4 * Copyright IBM Corp. 2008, 2009
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.
10 * Author(s): Carsten Otte <cotte@de.ibm.com>
11 * Christian Borntraeger <borntraeger@de.ibm.com>
12 * Christian Ehrhardt <ehrhardt@de.ibm.com>
15 #ifndef ARCH_S390_KVM_S390_H
16 #define ARCH_S390_KVM_S390_H
18 #include <linux/hrtimer.h>
19 #include <linux/kvm.h>
20 #include <linux/kvm_host.h>
22 /* The current code can have up to 256 pages for virtio */
23 #define VIRTIODESCSPACE (256ul * 4096ul)
25 typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
27 /* declare vfacilities extern */
28 extern unsigned long *vfacilities;
30 /* negativ values are error codes, positive values for internal conditions */
31 #define SIE_INTERCEPT_UCONTROL (1<<0)
32 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
34 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
36 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
40 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
42 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
43 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
44 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
48 static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
50 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
53 static inline int kvm_is_ucontrol(struct kvm *kvm)
55 #ifdef CONFIG_KVM_S390_UCONTROL
64 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
66 vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
67 vcpu->arch.sie_block->ihcpu = 0xffff;
68 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
71 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
73 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
74 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
76 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
79 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
80 u64 *address1, u64 *address2)
82 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
83 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
84 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
85 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
87 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
88 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
91 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
93 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
94 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
97 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
99 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
100 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
101 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
102 /* The displacement is a 20bit _SIGNED_ value */
106 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
109 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
111 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
112 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
114 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
117 /* Set the condition code in the guest program status word */
118 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
120 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
121 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
124 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
125 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
126 void kvm_s390_tasklet(unsigned long parm);
127 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
128 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
129 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
130 struct kvm_s390_interrupt *s390int);
131 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
132 struct kvm_s390_interrupt *s390int);
133 int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
134 int __must_check kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
135 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
138 /* implemented in priv.c */
139 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
140 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
141 int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
142 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
143 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
144 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
145 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
147 /* implemented in sigp.c */
148 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
150 /* implemented in kvm-s390.c */
151 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
153 void s390_vcpu_block(struct kvm_vcpu *vcpu);
154 void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
155 void exit_sie(struct kvm_vcpu *vcpu);
156 void exit_sie_sync(struct kvm_vcpu *vcpu);
157 /* implemented in diag.c */
158 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);