317 строки
10 KiB
C
317 строки
10 KiB
C
/*
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* definition for kvm on s390
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*
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* Copyright IBM Corp. 2008, 2009
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License (version 2 only)
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* as published by the Free Software Foundation.
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*
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Christian Borntraeger <borntraeger@de.ibm.com>
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* Christian Ehrhardt <ehrhardt@de.ibm.com>
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*/
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#ifndef ARCH_S390_KVM_S390_H
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#define ARCH_S390_KVM_S390_H
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#include <linux/hrtimer.h>
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#include <linux/kvm.h>
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#include <linux/kvm_host.h>
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#include <asm/facility.h>
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typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
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/* Transactional Memory Execution related macros */
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#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & 0x10))
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#define TDB_FORMAT1 1
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#define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
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extern debug_info_t *kvm_s390_dbf;
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#define KVM_EVENT(d_loglevel, d_string, d_args...)\
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do { \
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debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \
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d_args); \
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} while (0)
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#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
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do { \
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debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
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d_args); \
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} while (0)
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#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
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do { \
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debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
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"%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
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d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
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d_args); \
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} while (0)
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static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
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{
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return atomic_read(&vcpu->arch.sie_block->cpuflags) & CPUSTAT_STOPPED;
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}
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static inline int kvm_is_ucontrol(struct kvm *kvm)
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{
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#ifdef CONFIG_KVM_S390_UCONTROL
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if (kvm->arch.gmap)
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return 0;
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return 1;
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#else
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return 0;
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#endif
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}
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#define GUEST_PREFIX_SHIFT 13
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static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
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{
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return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
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}
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static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
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{
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VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id,
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prefix);
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vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
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kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
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kvm_make_request(KVM_REQ_MMU_RELOAD, vcpu);
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}
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typedef u8 __bitwise ar_t;
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static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, ar_t *ar)
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{
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u32 base2 = vcpu->arch.sie_block->ipb >> 28;
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u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
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if (ar)
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*ar = base2;
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return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
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}
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static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
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u64 *address1, u64 *address2,
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ar_t *ar_b1, ar_t *ar_b2)
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{
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u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
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u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
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u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
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u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
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*address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
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*address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
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if (ar_b1)
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*ar_b1 = base1;
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if (ar_b2)
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*ar_b2 = base2;
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}
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static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
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{
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if (r1)
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*r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
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if (r2)
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*r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
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}
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static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, ar_t *ar)
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{
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u32 base2 = vcpu->arch.sie_block->ipb >> 28;
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u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
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((vcpu->arch.sie_block->ipb & 0xff00) << 4);
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/* The displacement is a 20bit _SIGNED_ value */
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if (disp2 & 0x80000)
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disp2+=0xfff00000;
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if (ar)
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*ar = base2;
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return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
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}
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static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, ar_t *ar)
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{
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u32 base2 = vcpu->arch.sie_block->ipb >> 28;
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u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
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if (ar)
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*ar = base2;
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return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
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}
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/* Set the condition code in the guest program status word */
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static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
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{
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vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
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vcpu->arch.sie_block->gpsw.mask |= cc << 44;
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}
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/* test availability of facility in a kvm instance */
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static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
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{
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return __test_facility(nr, kvm->arch.model.fac->mask) &&
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__test_facility(nr, kvm->arch.model.fac->list);
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}
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static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
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{
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unsigned char *ptr;
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if (nr >= MAX_FACILITY_BIT)
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return -EINVAL;
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ptr = (unsigned char *) fac_list + (nr >> 3);
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*ptr |= (0x80UL >> (nr & 7));
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return 0;
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}
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/* are cpu states controlled by user space */
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static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
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{
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return kvm->arch.user_cpu_state_ctrl != 0;
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}
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int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
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void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
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enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
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int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
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void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
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void kvm_s390_clear_float_irqs(struct kvm *kvm);
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int __must_check kvm_s390_inject_vm(struct kvm *kvm,
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struct kvm_s390_interrupt *s390int);
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int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
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struct kvm_s390_irq *irq);
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int __must_check kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
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struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
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u64 isc_mask, u32 schid);
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int kvm_s390_reinject_io_int(struct kvm *kvm,
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struct kvm_s390_interrupt_info *inti);
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int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
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/* implemented in intercept.c */
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void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilc);
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int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
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/* implemented in priv.c */
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int is_valid_psw(psw_t *psw);
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int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
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/* implemented in sigp.c */
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int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
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int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
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/* implemented in kvm-s390.c */
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long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
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int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
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int kvm_s390_store_adtl_status_unloaded(struct kvm_vcpu *vcpu,
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unsigned long addr);
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int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
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int kvm_s390_vcpu_store_adtl_status(struct kvm_vcpu *vcpu, unsigned long addr);
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void kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
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void kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
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void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu);
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void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu);
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void exit_sie(struct kvm_vcpu *vcpu);
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void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu);
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int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
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void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
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unsigned long kvm_s390_fac_list_mask_size(void);
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extern unsigned long kvm_s390_fac_list_mask[];
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/* implemented in diag.c */
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int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
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/* implemented in interrupt.c */
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int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
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struct kvm_s390_pgm_info *pgm_info);
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static inline void kvm_s390_vcpu_block_all(struct kvm *kvm)
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{
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int i;
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struct kvm_vcpu *vcpu;
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WARN_ON(!mutex_is_locked(&kvm->lock));
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kvm_for_each_vcpu(i, vcpu, kvm)
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kvm_s390_vcpu_block(vcpu);
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}
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static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm)
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{
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int i;
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struct kvm_vcpu *vcpu;
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kvm_for_each_vcpu(i, vcpu, kvm)
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kvm_s390_vcpu_unblock(vcpu);
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}
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/**
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* kvm_s390_inject_prog_cond - conditionally inject a program check
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* @vcpu: virtual cpu
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* @rc: original return/error code
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*
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* This function is supposed to be used after regular guest access functions
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* failed, to conditionally inject a program check to a vcpu. The typical
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* pattern would look like
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*
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* rc = write_guest(vcpu, addr, data, len);
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* if (rc)
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* return kvm_s390_inject_prog_cond(vcpu, rc);
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*
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* A negative return code from guest access functions implies an internal error
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* like e.g. out of memory. In these cases no program check should be injected
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* to the guest.
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* A positive value implies that an exception happened while accessing a guest's
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* memory. In this case all data belonging to the corresponding program check
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* has been stored in vcpu->arch.pgm and can be injected with
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* kvm_s390_inject_prog_irq().
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*
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* Returns: - the original @rc value if @rc was negative (internal error)
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* - zero if @rc was already zero
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* - zero or error code from injecting if @rc was positive
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* (program check injected to @vcpu)
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*/
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static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
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{
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if (rc <= 0)
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return rc;
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return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
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}
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int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
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struct kvm_s390_irq *s390irq);
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/* implemented in interrupt.c */
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int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
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int psw_extint_disabled(struct kvm_vcpu *vcpu);
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void kvm_s390_destroy_adapters(struct kvm *kvm);
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int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
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extern struct kvm_device_ops kvm_flic_ops;
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int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
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void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
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int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
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void __user *buf, int len);
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int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
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__u8 __user *buf, int len);
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/* implemented in guestdbg.c */
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void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
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void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
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void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
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int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
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struct kvm_guest_debug *dbg);
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void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
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void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
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void kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
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#endif
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