1 /* 2 * 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 25 typedef 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) 29 #define SIE_INTERCEPT_UCONTROL (1<<1) 30 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); 31 32 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 33 do { \ 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...)\ 39 do { \ 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) 45 46 static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) 47 { 48 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; 49 } 50 51 static 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 } 61 62 static 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 68 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 69 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 70 void kvm_s390_tasklet(unsigned long parm); 71 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 72 int kvm_s390_inject_vm(struct kvm *kvm, 73 struct kvm_s390_interrupt *s390int); 74 int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 75 struct kvm_s390_interrupt *s390int); 76 int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); 77 int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); 78 79 /* implemented in priv.c */ 80 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 81 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 82 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 83 84 /* implemented in sigp.c */ 85 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 86 87 /* implemented in kvm-s390.c */ 88 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, 89 unsigned long addr); 90 /* implemented in diag.c */ 91 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 92 93 #endif 94