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 typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); 23 24 /* declare vfacilities extern */ 25 extern unsigned long *vfacilities; 26 27 int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); 28 29 /* Transactional Memory Execution related macros */ 30 #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10)) 31 #define TDB_ADDR 0x1800UL 32 #define TDB_FORMAT1 1 33 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1)) 34 35 #define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\ 36 do { \ 37 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \ 38 d_args); \ 39 } while (0) 40 41 #define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\ 42 do { \ 43 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \ 44 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \ 45 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\ 46 d_args); \ 47 } while (0) 48 49 static inline int __cpu_is_stopped(struct kvm_vcpu *vcpu) 50 { 51 return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; 52 } 53 54 static inline int kvm_is_ucontrol(struct kvm *kvm) 55 { 56 #ifdef CONFIG_KVM_S390_UCONTROL 57 if (kvm->arch.gmap) 58 return 0; 59 return 1; 60 #else 61 return 0; 62 #endif 63 } 64 65 static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) 66 { 67 vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u; 68 vcpu->arch.sie_block->ihcpu = 0xffff; 69 kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); 70 } 71 72 static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu) 73 { 74 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 75 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 76 77 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 78 } 79 80 static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, 81 u64 *address1, u64 *address2) 82 { 83 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; 84 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; 85 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; 86 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; 87 88 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; 89 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 90 } 91 92 static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) 93 { 94 if (r1) 95 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; 96 if (r2) 97 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; 98 } 99 100 static inline u64 kvm_s390_get_base_disp_rsy(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 ((vcpu->arch.sie_block->ipb & 0xff00) << 4); 105 /* The displacement is a 20bit _SIGNED_ value */ 106 if (disp2 & 0x80000) 107 disp2+=0xfff00000; 108 109 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; 110 } 111 112 static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu) 113 { 114 u32 base2 = vcpu->arch.sie_block->ipb >> 28; 115 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); 116 117 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; 118 } 119 120 /* Set the condition code in the guest program status word */ 121 static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) 122 { 123 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); 124 vcpu->arch.sie_block->gpsw.mask |= cc << 44; 125 } 126 127 int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); 128 enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); 129 void kvm_s390_tasklet(unsigned long parm); 130 void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); 131 void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu); 132 void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); 133 int __must_check kvm_s390_inject_vm(struct kvm *kvm, 134 struct kvm_s390_interrupt *s390int); 135 int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, 136 struct kvm_s390_interrupt *s390int); 137 int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); 138 struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, 139 u64 cr6, u64 schid); 140 int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); 141 142 /* implemented in priv.c */ 143 int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); 144 int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); 145 int kvm_s390_handle_01(struct kvm_vcpu *vcpu); 146 int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); 147 int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); 148 int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); 149 int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); 150 151 /* implemented in sigp.c */ 152 int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); 153 154 /* implemented in kvm-s390.c */ 155 int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); 156 int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); 157 void s390_vcpu_block(struct kvm_vcpu *vcpu); 158 void s390_vcpu_unblock(struct kvm_vcpu *vcpu); 159 void exit_sie(struct kvm_vcpu *vcpu); 160 void exit_sie_sync(struct kvm_vcpu *vcpu); 161 /* are we going to support cmma? */ 162 bool kvm_enabled_cmma(void); 163 /* implemented in diag.c */ 164 int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); 165 166 /* implemented in interrupt.c */ 167 int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); 168 int psw_extint_disabled(struct kvm_vcpu *vcpu); 169 void kvm_s390_destroy_adapters(struct kvm *kvm); 170 171 #endif 172