static int set_sregs_base(struct kvm_vcpu *vcpu,
struct kvm_sregs *sregs)
{
if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
return 0;
vcpu->arch.csrr0 = sregs->u.e.csrr0;
vcpu->arch.csrr1 = sregs->u.e.csrr1;
vcpu->arch.mcsr = sregs->u.e.mcsr;
vcpu->arch.shared->esr = sregs->u.e.esr;
vcpu->arch.shared->dar = sregs->u.e.dear;
vcpu->arch.vrsave = sregs->u.e.vrsave;
kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
vcpu->arch.dec = sregs->u.e.dec;
kvmppc_emulate_dec(vcpu);
}
if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) {
vcpu->arch.tsr = sregs->u.e.tsr;
update_timer_ints(vcpu);
}
return 0;
}
/*
* NOTE: some of these registers are not emulated on BOOKE_HV (GS-mode).
* Their backing store is in real registers, and these functions
* will return the wrong result if called for them in another context
* (such as debugging).
*/
int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
int emulated = EMULATE_DONE;
switch (sprn) {
case SPRN_DEAR:
vcpu->arch.shared->dar = spr_val;
break;
case SPRN_ESR:
vcpu->arch.shared->esr = spr_val;
break;
case SPRN_CSRR0:
vcpu->arch.csrr0 = spr_val;
break;
case SPRN_CSRR1:
vcpu->arch.csrr1 = spr_val;
break;
case SPRN_DBCR0:
vcpu->arch.dbg_reg.dbcr0 = spr_val;
break;
case SPRN_DBCR1:
vcpu->arch.dbg_reg.dbcr1 = spr_val;
break;
case SPRN_DBSR:
vcpu->arch.dbsr &= ~spr_val;
break;
case SPRN_TSR:
kvmppc_clr_tsr_bits(vcpu, spr_val);
break;
case SPRN_TCR:
/*
* WRC is a 2-bit field that is supposed to preserve its
* value once written to non-zero.
*/
if (vcpu->arch.tcr & TCR_WRC_MASK) {
spr_val &= ~TCR_WRC_MASK;
spr_val |= vcpu->arch.tcr & TCR_WRC_MASK;
}
kvmppc_set_tcr(vcpu, spr_val);
break;
case SPRN_DECAR:
vcpu->arch.decar = spr_val;
break;
/*
* Note: SPRG4-7 are user-readable.
* These values are loaded into the real SPRGs when resuming the
* guest (PR-mode only).
*/
case SPRN_SPRG4:
kvmppc_set_sprg4(vcpu, spr_val);
break;
case SPRN_SPRG5:
kvmppc_set_sprg5(vcpu, spr_val);
break;
case SPRN_SPRG6:
kvmppc_set_sprg6(vcpu, spr_val);
break;
case SPRN_SPRG7:
kvmppc_set_sprg7(vcpu, spr_val);
break;
case SPRN_IVPR:
vcpu->arch.ivpr = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVPR, spr_val);
#endif
break;
case SPRN_IVOR0:
vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
break;
case SPRN_IVOR1:
vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
break;
case SPRN_IVOR2:
vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVOR2, spr_val);
#endif
break;
case SPRN_IVOR3:
vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
break;
case SPRN_IVOR4:
vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
break;
case SPRN_IVOR5:
vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
break;
case SPRN_IVOR6:
vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
break;
case SPRN_IVOR7:
vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR8:
vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVOR8, spr_val);
#endif
break;
case SPRN_IVOR9:
vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR10:
vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
break;
case SPRN_IVOR11:
vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
break;
case SPRN_IVOR12:
vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
break;
case SPRN_IVOR13:
vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
break;
case SPRN_IVOR14:
vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
break;
case SPRN_IVOR15:
vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
break;
case SPRN_MCSR:
vcpu->arch.mcsr &= ~spr_val;
break;
#if defined(CONFIG_64BIT)
case SPRN_EPCR:
kvmppc_set_epcr(vcpu, spr_val);
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
#endif
break;
#endif
default:
emulated = EMULATE_FAIL;
}
return emulated;
}
int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
{
int emulated = EMULATE_DONE;
ulong spr_val = kvmppc_get_gpr(vcpu, rs);
switch (sprn) {
case SPRN_DEAR:
vcpu->arch.shared->dar = spr_val; break;
case SPRN_ESR:
vcpu->arch.shared->esr = spr_val; break;
case SPRN_DBCR0:
vcpu->arch.dbcr0 = spr_val; break;
case SPRN_DBCR1:
vcpu->arch.dbcr1 = spr_val; break;
case SPRN_DBSR:
vcpu->arch.dbsr &= ~spr_val; break;
case SPRN_TSR:
kvmppc_clr_tsr_bits(vcpu, spr_val);
break;
case SPRN_TCR:
kvmppc_set_tcr(vcpu, spr_val);
break;
/* Note: SPRG4-7 are user-readable. These values are
* loaded into the real SPRGs when resuming the
* guest. */
case SPRN_SPRG4:
vcpu->arch.shared->sprg4 = spr_val; break;
case SPRN_SPRG5:
vcpu->arch.shared->sprg5 = spr_val; break;
case SPRN_SPRG6:
vcpu->arch.shared->sprg6 = spr_val; break;
case SPRN_SPRG7:
vcpu->arch.shared->sprg7 = spr_val; break;
case SPRN_IVPR:
vcpu->arch.ivpr = spr_val;
break;
case SPRN_IVOR0:
vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
break;
case SPRN_IVOR1:
vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
break;
case SPRN_IVOR2:
vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
break;
case SPRN_IVOR3:
vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
break;
case SPRN_IVOR4:
vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
break;
case SPRN_IVOR5:
vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
break;
case SPRN_IVOR6:
vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
break;
case SPRN_IVOR7:
vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR8:
vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
break;
case SPRN_IVOR9:
vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR10:
vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
break;
case SPRN_IVOR11:
vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
break;
case SPRN_IVOR12:
vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
break;
case SPRN_IVOR13:
vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
break;
case SPRN_IVOR14:
vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
break;
case SPRN_IVOR15:
vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
break;
default:
emulated = EMULATE_FAIL;
}
return emulated;
}
/*
* NOTE: some of these registers are not emulated on BOOKE_HV (GS-mode).
* Their backing store is in real registers, and these functions
* will return the wrong result if called for them in another context
* (such as debugging).
*/
int kvmppc_booke_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
{
int emulated = EMULATE_DONE;
bool debug_inst = false;
switch (sprn) {
case SPRN_DEAR:
vcpu->arch.shared->dar = spr_val;
break;
case SPRN_ESR:
vcpu->arch.shared->esr = spr_val;
break;
case SPRN_CSRR0:
vcpu->arch.csrr0 = spr_val;
break;
case SPRN_CSRR1:
vcpu->arch.csrr1 = spr_val;
break;
case SPRN_DSRR0:
vcpu->arch.dsrr0 = spr_val;
break;
case SPRN_DSRR1:
vcpu->arch.dsrr1 = spr_val;
break;
case SPRN_IAC1:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.iac1 = spr_val;
break;
case SPRN_IAC2:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.iac2 = spr_val;
break;
#if CONFIG_PPC_ADV_DEBUG_IACS > 2
case SPRN_IAC3:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.iac3 = spr_val;
break;
case SPRN_IAC4:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.iac4 = spr_val;
break;
#endif
case SPRN_DAC1:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.dac1 = spr_val;
break;
case SPRN_DAC2:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.dac2 = spr_val;
break;
case SPRN_DBCR0:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
spr_val &= (DBCR0_IDM | DBCR0_IC | DBCR0_BT | DBCR0_TIE |
DBCR0_IAC1 | DBCR0_IAC2 | DBCR0_IAC3 | DBCR0_IAC4 |
DBCR0_DAC1R | DBCR0_DAC1W | DBCR0_DAC2R | DBCR0_DAC2W);
vcpu->arch.dbg_reg.dbcr0 = spr_val;
break;
case SPRN_DBCR1:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.dbcr1 = spr_val;
break;
case SPRN_DBCR2:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
debug_inst = true;
vcpu->arch.dbg_reg.dbcr2 = spr_val;
break;
case SPRN_DBSR:
/*
* If userspace is debugging guest then guest
* can not access debug registers.
*/
if (vcpu->guest_debug)
break;
vcpu->arch.dbsr &= ~spr_val;
if (!(vcpu->arch.dbsr & ~DBSR_IDE))
kvmppc_core_dequeue_debug(vcpu);
break;
case SPRN_TSR:
kvmppc_clr_tsr_bits(vcpu, spr_val);
break;
case SPRN_TCR:
/*
* WRC is a 2-bit field that is supposed to preserve its
* value once written to non-zero.
*/
if (vcpu->arch.tcr & TCR_WRC_MASK) {
spr_val &= ~TCR_WRC_MASK;
spr_val |= vcpu->arch.tcr & TCR_WRC_MASK;
}
kvmppc_set_tcr(vcpu, spr_val);
break;
case SPRN_DECAR:
vcpu->arch.decar = spr_val;
break;
/*
* Note: SPRG4-7 are user-readable.
* These values are loaded into the real SPRGs when resuming the
* guest (PR-mode only).
*/
case SPRN_SPRG4:
kvmppc_set_sprg4(vcpu, spr_val);
break;
case SPRN_SPRG5:
kvmppc_set_sprg5(vcpu, spr_val);
break;
case SPRN_SPRG6:
kvmppc_set_sprg6(vcpu, spr_val);
break;
case SPRN_SPRG7:
kvmppc_set_sprg7(vcpu, spr_val);
break;
case SPRN_IVPR:
vcpu->arch.ivpr = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVPR, spr_val);
#endif
break;
case SPRN_IVOR0:
vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = spr_val;
break;
case SPRN_IVOR1:
vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = spr_val;
break;
case SPRN_IVOR2:
vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVOR2, spr_val);
#endif
break;
case SPRN_IVOR3:
vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = spr_val;
break;
case SPRN_IVOR4:
vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = spr_val;
break;
case SPRN_IVOR5:
vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = spr_val;
break;
case SPRN_IVOR6:
vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = spr_val;
break;
case SPRN_IVOR7:
vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR8:
vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = spr_val;
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_GIVOR8, spr_val);
#endif
break;
case SPRN_IVOR9:
vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = spr_val;
break;
case SPRN_IVOR10:
vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = spr_val;
break;
case SPRN_IVOR11:
vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = spr_val;
break;
case SPRN_IVOR12:
vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = spr_val;
break;
case SPRN_IVOR13:
vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = spr_val;
break;
case SPRN_IVOR14:
vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = spr_val;
break;
case SPRN_IVOR15:
vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = spr_val;
break;
case SPRN_MCSR:
vcpu->arch.mcsr &= ~spr_val;
break;
#if defined(CONFIG_64BIT)
case SPRN_EPCR:
kvmppc_set_epcr(vcpu, spr_val);
#ifdef CONFIG_KVM_BOOKE_HV
mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
#endif
break;
#endif
default:
emulated = EMULATE_FAIL;
}
if (debug_inst) {
current->thread.debug = vcpu->arch.dbg_reg;
switch_booke_debug_regs(&vcpu->arch.dbg_reg);
}
return emulated;
}