/* * 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 * Christian Borntraeger * Christian Ehrhardt */ #ifndef ARCH_S390_KVM_S390_H #define ARCH_S390_KVM_S390_H #include #include #include #include typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); /* Transactional Memory Execution related macros */ #define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10)) #define TDB_FORMAT1 1 #define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1)) extern debug_info_t *kvm_s390_dbf; #define KVM_EVENT(d_loglevel, d_string, d_args...)\ do { \ debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \ d_args); \ } while (0) #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 is_vcpu_stopped(struct kvm_vcpu *vcpu) { return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED; } 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 } #define GUEST_PREFIX_SHIFT 13 static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu) { return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT; } static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix) { VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id, prefix); vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); } typedef u8 __bitwise ar_t; static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); if (ar) *ar = base2; return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; } static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu, u64 *address1, u64 *address2, ar_t *ar_b1, ar_t *ar_b2) { u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28; u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16; u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12; u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff; *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1; *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; if (ar_b1) *ar_b1 = base1; if (ar_b2) *ar_b2 = base2; } static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2) { if (r1) *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20; if (r2) *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16; } static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) + ((vcpu->arch.sie_block->ipb & 0xff00) << 4); /* The displacement is a 20bit _SIGNED_ value */ if (disp2 & 0x80000) disp2+=0xfff00000; if (ar) *ar = base2; return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2; } static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar) { u32 base2 = vcpu->arch.sie_block->ipb >> 28; u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); if (ar) *ar = base2; return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2; } /* Set the condition code in the guest program status word */ static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc) { vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44); vcpu->arch.sie_block->gpsw.mask |= cc << 44; } /* test availability of facility in a kvm instance */ static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr) { return __test_facility(nr, kvm->arch.model.fac->mask) && __test_facility(nr, kvm->arch.model.fac->list); } static inline int set_kvm_facility(u64 *fac_list, unsigned long nr) { unsigned char *ptr; if (nr >= MAX_FACILITY_BIT) return -EINVAL; ptr = (unsigned char *) fac_list + (nr >> 3); *ptr |= (0x80UL >> (nr & 7)); return 0; } /* are cpu states controlled by user space */ static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm) { return kvm->arch.user_cpu_state_ctrl != 0; } /* implemented in interrupt.c */ int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu); enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu); void kvm_s390_clear_float_irqs(struct kvm *kvm); int __must_check kvm_s390_inject_vm(struct kvm *kvm, struct kvm_s390_interrupt *s390int); int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq); static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, struct kvm_s390_pgm_info *pgm_info) { struct kvm_s390_irq irq = { .type = KVM_S390_PROGRAM_INT, .u.pgm = *pgm_info, }; return kvm_s390_inject_vcpu(vcpu, &irq); } static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code) { struct kvm_s390_irq irq = { .type = KVM_S390_PROGRAM_INT, .u.pgm.code = code, }; return kvm_s390_inject_vcpu(vcpu, &irq); } struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, u64 isc_mask, u32 schid); int kvm_s390_reinject_io_int(struct kvm *kvm, struct kvm_s390_interrupt_info *inti); int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked); /* implemented in intercept.c */ void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc); int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu); /* implemented in priv.c */ int is_valid_psw(psw_t *psw); int kvm_s390_handle_b2(struct kvm_vcpu *vcpu); int kvm_s390_handle_e5(struct kvm_vcpu *vcpu); int kvm_s390_handle_01(struct kvm_vcpu *vcpu); int kvm_s390_handle_b9(struct kvm_vcpu *vcpu); int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu); int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu); int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu); int kvm_s390_handle_eb(struct kvm_vcpu *vcpu); /* implemented in sigp.c */ int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu); int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu); /* implemented in kvm-s390.c */ void kvm_s390_set_tod_clock(struct kvm *kvm, u64 tod); long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable); int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr); int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr); int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr); void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu); void exit_sie(struct kvm_vcpu *vcpu); void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu); int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); unsigned long kvm_s390_fac_list_mask_size(void); extern unsigned long kvm_s390_fac_list_mask[]; /* implemented in diag.c */ int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); static inline void kvm_s390_vcpu_block_all(struct kvm *kvm) { int i; struct kvm_vcpu *vcpu; WARN_ON(!mutex_is_locked(&kvm->lock)); kvm_for_each_vcpu(i, vcpu, kvm) kvm_s390_vcpu_block(vcpu); } static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm) { int i; struct kvm_vcpu *vcpu; kvm_for_each_vcpu(i, vcpu, kvm) kvm_s390_vcpu_unblock(vcpu); } static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm) { u64 rc; preempt_disable(); rc = get_tod_clock_fast() + kvm->arch.epoch; preempt_enable(); return rc; } /** * kvm_s390_inject_prog_cond - conditionally inject a program check * @vcpu: virtual cpu * @rc: original return/error code * * This function is supposed to be used after regular guest access functions * failed, to conditionally inject a program check to a vcpu. The typical * pattern would look like * * rc = write_guest(vcpu, addr, data, len); * if (rc) * return kvm_s390_inject_prog_cond(vcpu, rc); * * A negative return code from guest access functions implies an internal error * like e.g. out of memory. In these cases no program check should be injected * to the guest. * A positive value implies that an exception happened while accessing a guest's * memory. In this case all data belonging to the corresponding program check * has been stored in vcpu->arch.pgm and can be injected with * kvm_s390_inject_prog_irq(). * * Returns: - the original @rc value if @rc was negative (internal error) * - zero if @rc was already zero * - zero or error code from injecting if @rc was positive * (program check injected to @vcpu) */ static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc) { if (rc <= 0) return rc; return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm); } int s390int_to_s390irq(struct kvm_s390_interrupt *s390int, struct kvm_s390_irq *s390irq); /* implemented in interrupt.c */ int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop); int psw_extint_disabled(struct kvm_vcpu *vcpu); void kvm_s390_destroy_adapters(struct kvm *kvm); int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu); extern struct kvm_device_ops kvm_flic_ops; int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu); void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu); int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu, void __user *buf, int len); int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu, __u8 __user *buf, int len); /* implemented in guestdbg.c */ void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu); void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu); void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu); int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu, struct kvm_guest_debug *dbg); void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu); void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu); void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu); /* support for Basic/Extended SCA handling */ static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm) { return &kvm->arch.sca->ipte_control; } #endif