| /* |
| * 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 <cotte@de.ibm.com> |
| * Christian Borntraeger <borntraeger@de.ibm.com> |
| * Christian Ehrhardt <ehrhardt@de.ibm.com> |
| */ |
| |
| #ifndef ARCH_S390_KVM_S390_H |
| #define ARCH_S390_KVM_S390_H |
| |
| #include <linux/hrtimer.h> |
| #include <linux/kvm.h> |
| #include <linux/kvm_host.h> |
| |
| typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu); |
| |
| /* declare vfacilities extern */ |
| extern unsigned long *vfacilities; |
| |
| int kvm_handle_sie_intercept(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)) |
| |
| #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 __cpu_is_stopped(struct kvm_vcpu *vcpu) |
| { |
| return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOP_INT; |
| } |
| |
| 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->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT; |
| vcpu->arch.sie_block->ihcpu = 0xffff; |
| kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu); |
| } |
| |
| static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu) |
| { |
| u32 base2 = vcpu->arch.sie_block->ipb >> 28; |
| u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); |
| |
| 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) |
| { |
| 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; |
| } |
| |
| 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) |
| { |
| 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; |
| |
| 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) |
| { |
| u32 base2 = vcpu->arch.sie_block->ipb >> 28; |
| u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16); |
| |
| 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; |
| } |
| |
| int kvm_s390_handle_wait(struct kvm_vcpu *vcpu); |
| enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer); |
| void kvm_s390_tasklet(unsigned long parm); |
| void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu); |
| void kvm_s390_deliver_pending_machine_checks(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_interrupt *s390int); |
| int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code); |
| struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm, |
| u64 cr6, u64 schid); |
| void 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 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 */ |
| 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_vcpu_store_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 s390_vcpu_block(struct kvm_vcpu *vcpu); |
| void s390_vcpu_unblock(struct kvm_vcpu *vcpu); |
| void exit_sie(struct kvm_vcpu *vcpu); |
| void exit_sie_sync(struct kvm_vcpu *vcpu); |
| int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu); |
| void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu); |
| /* is cmma enabled */ |
| bool kvm_s390_cmma_enabled(struct kvm *kvm); |
| int test_vfacility(unsigned long nr); |
| |
| /* implemented in diag.c */ |
| int kvm_s390_handle_diag(struct kvm_vcpu *vcpu); |
| /* implemented in interrupt.c */ |
| int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu, |
| struct kvm_s390_pgm_info *pgm_info); |
| |
| /** |
| * 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); |
| } |
| |
| /* implemented in interrupt.c */ |
| int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu); |
| int psw_extint_disabled(struct kvm_vcpu *vcpu); |
| void kvm_s390_destroy_adapters(struct kvm *kvm); |
| int kvm_s390_si_ext_call_pending(struct kvm_vcpu *vcpu); |
| |
| /* 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); |
| |
| #endif |
