forked from Minki/linux
bc784ccee5
This patch adds new structures and updates some existing ones to provide the base for Extended SCA functionality. The old sca_* structures were renamed to bsca_* to keep things uniform. The access to fields of SIGP controls were turned into bitfields instead of hardcoded bitmasks. Signed-off-by: Eugene (jno) Dvurechenski <jno@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
351 lines
11 KiB
C
351 lines
11 KiB
C
/*
|
|
* 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>
|
|
#include <asm/facility.h>
|
|
|
|
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)
|
|
{
|
|
struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */
|
|
|
|
return &sca->ipte_control;
|
|
}
|
|
#endif
|