mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-21 03:43:03 +00:00
fa6b7fe992
Add a new capability, KVM_CAP_S390_CSS_SUPPORT, which will pass intercepts for channel I/O instructions to userspace. Only I/O instructions interacting with I/O interrupts need to be handled in-kernel: - TEST PENDING INTERRUPTION (tpi) dequeues and stores pending interrupts entirely in-kernel. - TEST SUBCHANNEL (tsch) dequeues pending interrupts in-kernel and exits via KVM_EXIT_S390_TSCH to userspace for subchannel- related processing. Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
137 lines
4.3 KiB
C
137 lines
4.3 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>
|
|
|
|
/* The current code can have up to 256 pages for virtio */
|
|
#define VIRTIODESCSPACE (256ul * 4096ul)
|
|
|
|
typedef int (*intercept_handler_t)(struct kvm_vcpu *vcpu);
|
|
|
|
/* negativ values are error codes, positive values for internal conditions */
|
|
#define SIE_INTERCEPT_RERUNVCPU (1<<0)
|
|
#define SIE_INTERCEPT_UCONTROL (1<<1)
|
|
int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
|
|
|
|
#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
|
|
}
|
|
|
|
static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
|
|
{
|
|
vcpu->arch.sie_block->prefix = prefix & 0x7fffe000u;
|
|
vcpu->arch.sie_block->ihcpu = 0xffff;
|
|
}
|
|
|
|
static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu)
|
|
{
|
|
int base2 = vcpu->arch.sie_block->ipb >> 28;
|
|
int 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)
|
|
{
|
|
int base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
|
|
int disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
|
|
int base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
|
|
int 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 u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu)
|
|
{
|
|
int base2 = vcpu->arch.sie_block->ipb >> 28;
|
|
int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
|
|
((vcpu->arch.sie_block->ipb & 0xff00) << 4);
|
|
|
|
return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
|
|
}
|
|
|
|
static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu)
|
|
{
|
|
int base2 = vcpu->arch.sie_block->ipb >> 28;
|
|
int disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
|
|
|
|
return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
|
|
}
|
|
|
|
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);
|
|
int kvm_s390_inject_vm(struct kvm *kvm,
|
|
struct kvm_s390_interrupt *s390int);
|
|
int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
|
|
struct kvm_s390_interrupt *s390int);
|
|
int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code);
|
|
int kvm_s390_inject_sigp_stop(struct kvm_vcpu *vcpu, int action);
|
|
struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
|
|
u64 cr6, u64 schid);
|
|
|
|
/* implemented in priv.c */
|
|
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_priv_eb(struct kvm_vcpu *vcpu);
|
|
|
|
/* implemented in sigp.c */
|
|
int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
|
|
|
|
/* implemented in kvm-s390.c */
|
|
int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu,
|
|
unsigned long addr);
|
|
/* implemented in diag.c */
|
|
int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
|
|
|
|
#endif
|