diff options
Diffstat (limited to 'arch/s390/kvm/kvm-s390.h')
| -rw-r--r-- | arch/s390/kvm/kvm-s390.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h new file mode 100644 index 00000000..ff28f9d1 --- /dev/null +++ b/arch/s390/kvm/kvm-s390.h @@ -0,0 +1,92 @@ +/* + * kvm_s390.h - 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> + +/* The current code can have up to 256 pages for virtio */ +#define VIRTIODESCSPACE (256ul * 4096ul) + +typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); + +/* negativ values are error codes, positive values for internal conditions */ +#define SIE_INTERCEPT_RERUNVCPU (1<<0) +#define SIE_INTERCEPT_UCONTROL (1<<1) +int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); + +#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; +} + +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); +int kvm_s390_inject_vm(struct kvm *kvm, + struct kvm_s390_interrupt *s390int); +int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, + struct kvm_s390_interrupt *s390int); +int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); +int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); + +/* implemented in priv.c */ +int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); +int kvm_s390_handle_e5(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_vcpu_store_status(struct kvm_vcpu *vcpu, + unsigned long addr); +/* implemented in diag.c */ +int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); + +#endif |