1/* 2 * kvm_s390.h - definition for kvm on s390 3 * 4 * Copyright IBM Corp. 2008,2009 5 * 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> 12 * Christian Ehrhardt <ehrhardt@de.ibm.com> 13 */ 14 15#ifndef ARCH_S390_KVM_S390_H 16#define ARCH_S390_KVM_S390_H 17 18#include <linux/hrtimer.h> 19#include <linux/kvm.h> 20#include <linux/kvm_host.h> 21 22/* The current code can have up to 256 pages for virtio */ 23#define VIRTIODESCSPACE (256ul * 4096ul) 24 25typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); 26 27/* negativ values are error codes, positive values for internal conditions */ 28#define SIE_INTERCEPT_RERUNVCPU (1<<0) 29int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); 30 31#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 32do { \ 33 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ 34 d_args); \ 35} while (0) 36 37#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ 38do { \ 39 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ 40 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ 41 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ 42 d_args); \ 43} while (0) 44 45static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) 46{ 47 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; 48} 49 50int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 51enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 52void kvm_s390_tasklet(unsigned long parm); 53void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 54int kvm_s390_inject_vm(struct kvm *kvm, 55 struct kvm_s390_interrupt *s390int); 56int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 57 struct kvm_s390_interrupt *s390int); 58int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); 59int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); 60 61static inline long kvm_s390_vcpu_get_memsize(struct kvm_vcpu *vcpu) 62{ 63 return vcpu->arch.sie_block->gmslm 64 - vcpu->arch.sie_block->gmsor 65 - VIRTIODESCSPACE + 1ul; 66} 67 68static inline void kvm_s390_vcpu_set_mem(struct kvm_vcpu *vcpu) 69{ 70 int idx; 71 struct kvm_memory_slot *mem; 72 struct kvm_memslots *memslots; 73 74 idx = srcu_read_lock(&vcpu->kvm->srcu); 75 memslots = kvm_memslots(vcpu->kvm); 76 77 mem = &memslots->memslots[0]; 78 79 vcpu->arch.sie_block->gmsor = mem->userspace_addr; 80 vcpu->arch.sie_block->gmslm = 81 mem->userspace_addr + 82 (mem->npages << PAGE_SHIFT) + 83 VIRTIODESCSPACE - 1ul; 84 85 srcu_read_unlock(&vcpu->kvm->srcu, idx); 86} 87 88/* implemented in priv.c */ 89int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 90 91/* implemented in sigp.c */ 92int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 93 94/* implemented in kvm-s390.c */ 95int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, 96 unsigned long addr); 97/* implemented in diag.c */ 98int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 99 100#endif 101