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 /* negativ values are error codes, positive values for internal conditions */
28 #define SIE_INTERCEPT_RERUNVCPU (1<<0)
29 #define SIE_INTERCEPT_UCONTROL (1<<1)
30 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
32 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
34 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
38 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
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,\
46 static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu)
48 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT;
51 static inline int kvm_is_ucontrol(struct kvm *kvm)
53 #ifdef CONFIG_KVM_S390_UCONTROL
62 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
64 vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
65 vcpu->arch.sie_block->ihcpu = 0xffff;
66 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
69 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
71 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
72 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
74 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
77 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
78 u64 *address1, u64 *address2)
80 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
81 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
82 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
83 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
85 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
86 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
89 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
91 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
92 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
95 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
97 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
98 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
99 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
100 /* The displacement is a 20bit _SIGNED_ value */
104 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
107 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
109 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
110 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
112 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
115 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
116 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
117 void kvm_s390_tasklet(unsigned long parm);
118 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
119 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu);
120 int __must_check kvm_s390_inject_vm(struct kvm *kvm,
121 struct kvm_s390_interrupt *s390int);
122 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
123 struct kvm_s390_interrupt *s390int);
124 int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
125 int __must_check kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
126 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
129 /* implemented in priv.c */
130 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
131 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
132 int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
133 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
134 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
135 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
136 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
138 /* implemented in sigp.c */
139 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
141 /* implemented in kvm-s390.c */
142 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
144 void s390_vcpu_block(struct kvm_vcpu *vcpu);
145 void s390_vcpu_unblock(struct kvm_vcpu *vcpu);
146 void exit_sie(struct kvm_vcpu *vcpu);
147 void exit_sie_sync(struct kvm_vcpu *vcpu);
148 /* implemented in diag.c */
149 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);