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 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu) 69 { 70 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 71 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 72 73 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 74 } 75 76 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, 77 u64 *address1, u64 *address2) 78 { 79 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; 80 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; 81 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; 82 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; 83 84 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 85 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 86 } 87 88 static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu) 89 { 90 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 91 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + 92 ((vcpu->arch.sie_block->ipb & 0xff00) << 4); 93 /* The displacement is a 20bit _SIGNED_ value */ 94 if (disp2 & 0x80000) 95 disp2+=0xfff00000; 96 97 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; 98 } 99 100 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu) 101 { 102 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 103 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 104 105 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 106 } 107 108 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 109 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 110 void kvm_s390_tasklet(unsigned long parm); 111 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 112 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu); 113 int __must_check kvm_s390_inject_vm(struct kvm *kvm, 114 struct kvm_s390_interrupt *s390int); 115 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 116 struct kvm_s390_interrupt *s390int); 117 int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); 118 int __must_check kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action); 119 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, 120 u64 cr6, u64 schid); 121 122 /* implemented in priv.c */ 123 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 124 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 125 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 126 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); 127 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); 128 int kvm_s390_handle_priv_eb(struct kvm_vcpu *vcpu); 129 130 /* implemented in sigp.c */ 131 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 132 133 /* implemented in kvm-s390.c */ 134 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, 135 unsigned long addr); 136 /* implemented in diag.c */ 137 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 138 139 #endif 140