1073 lines
25 KiB
C
1073 lines
25 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
*
|
|
* Copyright SUSE Linux Products GmbH 2009
|
|
*
|
|
* Authors: Alexander Graf <agraf@suse.de>
|
|
*/
|
|
|
|
#include <asm/kvm_ppc.h>
|
|
#include <asm/disassemble.h>
|
|
#include <asm/kvm_book3s.h>
|
|
#include <asm/reg.h>
|
|
#include <asm/switch_to.h>
|
|
#include <asm/time.h>
|
|
#include <asm/tm.h>
|
|
#include "book3s.h"
|
|
#include <asm/asm-prototypes.h>
|
|
|
|
#define OP_19_XOP_RFID 18
|
|
#define OP_19_XOP_RFI 50
|
|
|
|
#define OP_31_XOP_MFMSR 83
|
|
#define OP_31_XOP_MTMSR 146
|
|
#define OP_31_XOP_MTMSRD 178
|
|
#define OP_31_XOP_MTSR 210
|
|
#define OP_31_XOP_MTSRIN 242
|
|
#define OP_31_XOP_TLBIEL 274
|
|
/* Opcode is officially reserved, reuse it as sc 1 when sc 1 doesn't trap */
|
|
#define OP_31_XOP_FAKE_SC1 308
|
|
#define OP_31_XOP_SLBMTE 402
|
|
#define OP_31_XOP_SLBIE 434
|
|
#define OP_31_XOP_SLBIA 498
|
|
#define OP_31_XOP_MFSR 595
|
|
#define OP_31_XOP_MFSRIN 659
|
|
#define OP_31_XOP_DCBA 758
|
|
#define OP_31_XOP_SLBMFEV 851
|
|
#define OP_31_XOP_EIOIO 854
|
|
#define OP_31_XOP_SLBMFEE 915
|
|
#define OP_31_XOP_SLBFEE 979
|
|
|
|
#define OP_31_XOP_TBEGIN 654
|
|
#define OP_31_XOP_TABORT 910
|
|
|
|
#define OP_31_XOP_TRECLAIM 942
|
|
#define OP_31_XOP_TRCHKPT 1006
|
|
|
|
/* DCBZ is actually 1014, but we patch it to 1010 so we get a trap */
|
|
#define OP_31_XOP_DCBZ 1010
|
|
|
|
#define OP_LFS 48
|
|
#define OP_LFD 50
|
|
#define OP_STFS 52
|
|
#define OP_STFD 54
|
|
|
|
#define SPRN_GQR0 912
|
|
#define SPRN_GQR1 913
|
|
#define SPRN_GQR2 914
|
|
#define SPRN_GQR3 915
|
|
#define SPRN_GQR4 916
|
|
#define SPRN_GQR5 917
|
|
#define SPRN_GQR6 918
|
|
#define SPRN_GQR7 919
|
|
|
|
enum priv_level {
|
|
PRIV_PROBLEM = 0,
|
|
PRIV_SUPER = 1,
|
|
PRIV_HYPER = 2,
|
|
};
|
|
|
|
static bool spr_allowed(struct kvm_vcpu *vcpu, enum priv_level level)
|
|
{
|
|
/* PAPR VMs only access supervisor SPRs */
|
|
if (vcpu->arch.papr_enabled && (level > PRIV_SUPER))
|
|
return false;
|
|
|
|
/* Limit user space to its own small SPR set */
|
|
if ((kvmppc_get_msr(vcpu) & MSR_PR) && level > PRIV_PROBLEM)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
|
static inline void kvmppc_copyto_vcpu_tm(struct kvm_vcpu *vcpu)
|
|
{
|
|
memcpy(&vcpu->arch.gpr_tm[0], &vcpu->arch.regs.gpr[0],
|
|
sizeof(vcpu->arch.gpr_tm));
|
|
memcpy(&vcpu->arch.fp_tm, &vcpu->arch.fp,
|
|
sizeof(struct thread_fp_state));
|
|
memcpy(&vcpu->arch.vr_tm, &vcpu->arch.vr,
|
|
sizeof(struct thread_vr_state));
|
|
vcpu->arch.ppr_tm = vcpu->arch.ppr;
|
|
vcpu->arch.dscr_tm = vcpu->arch.dscr;
|
|
vcpu->arch.amr_tm = vcpu->arch.amr;
|
|
vcpu->arch.ctr_tm = vcpu->arch.regs.ctr;
|
|
vcpu->arch.tar_tm = vcpu->arch.tar;
|
|
vcpu->arch.lr_tm = vcpu->arch.regs.link;
|
|
vcpu->arch.cr_tm = vcpu->arch.regs.ccr;
|
|
vcpu->arch.xer_tm = vcpu->arch.regs.xer;
|
|
vcpu->arch.vrsave_tm = vcpu->arch.vrsave;
|
|
}
|
|
|
|
static inline void kvmppc_copyfrom_vcpu_tm(struct kvm_vcpu *vcpu)
|
|
{
|
|
memcpy(&vcpu->arch.regs.gpr[0], &vcpu->arch.gpr_tm[0],
|
|
sizeof(vcpu->arch.regs.gpr));
|
|
memcpy(&vcpu->arch.fp, &vcpu->arch.fp_tm,
|
|
sizeof(struct thread_fp_state));
|
|
memcpy(&vcpu->arch.vr, &vcpu->arch.vr_tm,
|
|
sizeof(struct thread_vr_state));
|
|
vcpu->arch.ppr = vcpu->arch.ppr_tm;
|
|
vcpu->arch.dscr = vcpu->arch.dscr_tm;
|
|
vcpu->arch.amr = vcpu->arch.amr_tm;
|
|
vcpu->arch.regs.ctr = vcpu->arch.ctr_tm;
|
|
vcpu->arch.tar = vcpu->arch.tar_tm;
|
|
vcpu->arch.regs.link = vcpu->arch.lr_tm;
|
|
vcpu->arch.regs.ccr = vcpu->arch.cr_tm;
|
|
vcpu->arch.regs.xer = vcpu->arch.xer_tm;
|
|
vcpu->arch.vrsave = vcpu->arch.vrsave_tm;
|
|
}
|
|
|
|
static void kvmppc_emulate_treclaim(struct kvm_vcpu *vcpu, int ra_val)
|
|
{
|
|
unsigned long guest_msr = kvmppc_get_msr(vcpu);
|
|
int fc_val = ra_val ? ra_val : 1;
|
|
uint64_t texasr;
|
|
|
|
/* CR0 = 0 | MSR[TS] | 0 */
|
|
vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)) |
|
|
(((guest_msr & MSR_TS_MASK) >> (MSR_TS_S_LG - 1))
|
|
<< CR0_SHIFT);
|
|
|
|
preempt_disable();
|
|
tm_enable();
|
|
texasr = mfspr(SPRN_TEXASR);
|
|
kvmppc_save_tm_pr(vcpu);
|
|
kvmppc_copyfrom_vcpu_tm(vcpu);
|
|
|
|
/* failure recording depends on Failure Summary bit */
|
|
if (!(texasr & TEXASR_FS)) {
|
|
texasr &= ~TEXASR_FC;
|
|
texasr |= ((u64)fc_val << TEXASR_FC_LG) | TEXASR_FS;
|
|
|
|
texasr &= ~(TEXASR_PR | TEXASR_HV);
|
|
if (kvmppc_get_msr(vcpu) & MSR_PR)
|
|
texasr |= TEXASR_PR;
|
|
|
|
if (kvmppc_get_msr(vcpu) & MSR_HV)
|
|
texasr |= TEXASR_HV;
|
|
|
|
vcpu->arch.texasr = texasr;
|
|
vcpu->arch.tfiar = kvmppc_get_pc(vcpu);
|
|
mtspr(SPRN_TEXASR, texasr);
|
|
mtspr(SPRN_TFIAR, vcpu->arch.tfiar);
|
|
}
|
|
tm_disable();
|
|
/*
|
|
* treclaim need quit to non-transactional state.
|
|
*/
|
|
guest_msr &= ~(MSR_TS_MASK);
|
|
kvmppc_set_msr(vcpu, guest_msr);
|
|
preempt_enable();
|
|
|
|
if (vcpu->arch.shadow_fscr & FSCR_TAR)
|
|
mtspr(SPRN_TAR, vcpu->arch.tar);
|
|
}
|
|
|
|
static void kvmppc_emulate_trchkpt(struct kvm_vcpu *vcpu)
|
|
{
|
|
unsigned long guest_msr = kvmppc_get_msr(vcpu);
|
|
|
|
preempt_disable();
|
|
/*
|
|
* need flush FP/VEC/VSX to vcpu save area before
|
|
* copy.
|
|
*/
|
|
kvmppc_giveup_ext(vcpu, MSR_VSX);
|
|
kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
|
|
kvmppc_copyto_vcpu_tm(vcpu);
|
|
kvmppc_save_tm_sprs(vcpu);
|
|
|
|
/*
|
|
* as a result of trecheckpoint. set TS to suspended.
|
|
*/
|
|
guest_msr &= ~(MSR_TS_MASK);
|
|
guest_msr |= MSR_TS_S;
|
|
kvmppc_set_msr(vcpu, guest_msr);
|
|
kvmppc_restore_tm_pr(vcpu);
|
|
preempt_enable();
|
|
}
|
|
|
|
/* emulate tabort. at guest privilege state */
|
|
void kvmppc_emulate_tabort(struct kvm_vcpu *vcpu, int ra_val)
|
|
{
|
|
/* currently we only emulate tabort. but no emulation of other
|
|
* tabort variants since there is no kernel usage of them at
|
|
* present.
|
|
*/
|
|
unsigned long guest_msr = kvmppc_get_msr(vcpu);
|
|
uint64_t org_texasr;
|
|
|
|
preempt_disable();
|
|
tm_enable();
|
|
org_texasr = mfspr(SPRN_TEXASR);
|
|
tm_abort(ra_val);
|
|
|
|
/* CR0 = 0 | MSR[TS] | 0 */
|
|
vcpu->arch.regs.ccr = (vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)) |
|
|
(((guest_msr & MSR_TS_MASK) >> (MSR_TS_S_LG - 1))
|
|
<< CR0_SHIFT);
|
|
|
|
vcpu->arch.texasr = mfspr(SPRN_TEXASR);
|
|
/* failure recording depends on Failure Summary bit,
|
|
* and tabort will be treated as nops in non-transactional
|
|
* state.
|
|
*/
|
|
if (!(org_texasr & TEXASR_FS) &&
|
|
MSR_TM_ACTIVE(guest_msr)) {
|
|
vcpu->arch.texasr &= ~(TEXASR_PR | TEXASR_HV);
|
|
if (guest_msr & MSR_PR)
|
|
vcpu->arch.texasr |= TEXASR_PR;
|
|
|
|
if (guest_msr & MSR_HV)
|
|
vcpu->arch.texasr |= TEXASR_HV;
|
|
|
|
vcpu->arch.tfiar = kvmppc_get_pc(vcpu);
|
|
}
|
|
tm_disable();
|
|
preempt_enable();
|
|
}
|
|
|
|
#endif
|
|
|
|
int kvmppc_core_emulate_op_pr(struct kvm_vcpu *vcpu,
|
|
unsigned int inst, int *advance)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
int rt = get_rt(inst);
|
|
int rs = get_rs(inst);
|
|
int ra = get_ra(inst);
|
|
int rb = get_rb(inst);
|
|
u32 inst_sc = 0x44000002;
|
|
|
|
switch (get_op(inst)) {
|
|
case 0:
|
|
emulated = EMULATE_FAIL;
|
|
if ((kvmppc_get_msr(vcpu) & MSR_LE) &&
|
|
(inst == swab32(inst_sc))) {
|
|
/*
|
|
* This is the byte reversed syscall instruction of our
|
|
* hypercall handler. Early versions of LE Linux didn't
|
|
* swap the instructions correctly and ended up in
|
|
* illegal instructions.
|
|
* Just always fail hypercalls on these broken systems.
|
|
*/
|
|
kvmppc_set_gpr(vcpu, 3, EV_UNIMPLEMENTED);
|
|
kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4);
|
|
emulated = EMULATE_DONE;
|
|
}
|
|
break;
|
|
case 19:
|
|
switch (get_xop(inst)) {
|
|
case OP_19_XOP_RFID:
|
|
case OP_19_XOP_RFI: {
|
|
unsigned long srr1 = kvmppc_get_srr1(vcpu);
|
|
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
|
unsigned long cur_msr = kvmppc_get_msr(vcpu);
|
|
|
|
/*
|
|
* add rules to fit in ISA specification regarding TM
|
|
* state transition in TM disable/Suspended state,
|
|
* and target TM state is TM inactive(00) state. (the
|
|
* change should be suppressed).
|
|
*/
|
|
if (((cur_msr & MSR_TM) == 0) &&
|
|
((srr1 & MSR_TM) == 0) &&
|
|
MSR_TM_SUSPENDED(cur_msr) &&
|
|
!MSR_TM_ACTIVE(srr1))
|
|
srr1 |= MSR_TS_S;
|
|
#endif
|
|
kvmppc_set_pc(vcpu, kvmppc_get_srr0(vcpu));
|
|
kvmppc_set_msr(vcpu, srr1);
|
|
*advance = 0;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
emulated = EMULATE_FAIL;
|
|
break;
|
|
}
|
|
break;
|
|
case 31:
|
|
switch (get_xop(inst)) {
|
|
case OP_31_XOP_MFMSR:
|
|
kvmppc_set_gpr(vcpu, rt, kvmppc_get_msr(vcpu));
|
|
break;
|
|
case OP_31_XOP_MTMSRD:
|
|
{
|
|
ulong rs_val = kvmppc_get_gpr(vcpu, rs);
|
|
if (inst & 0x10000) {
|
|
ulong new_msr = kvmppc_get_msr(vcpu);
|
|
new_msr &= ~(MSR_RI | MSR_EE);
|
|
new_msr |= rs_val & (MSR_RI | MSR_EE);
|
|
kvmppc_set_msr_fast(vcpu, new_msr);
|
|
} else
|
|
kvmppc_set_msr(vcpu, rs_val);
|
|
break;
|
|
}
|
|
case OP_31_XOP_MTMSR:
|
|
kvmppc_set_msr(vcpu, kvmppc_get_gpr(vcpu, rs));
|
|
break;
|
|
case OP_31_XOP_MFSR:
|
|
{
|
|
int srnum;
|
|
|
|
srnum = kvmppc_get_field(inst, 12 + 32, 15 + 32);
|
|
if (vcpu->arch.mmu.mfsrin) {
|
|
u32 sr;
|
|
sr = vcpu->arch.mmu.mfsrin(vcpu, srnum);
|
|
kvmppc_set_gpr(vcpu, rt, sr);
|
|
}
|
|
break;
|
|
}
|
|
case OP_31_XOP_MFSRIN:
|
|
{
|
|
int srnum;
|
|
|
|
srnum = (kvmppc_get_gpr(vcpu, rb) >> 28) & 0xf;
|
|
if (vcpu->arch.mmu.mfsrin) {
|
|
u32 sr;
|
|
sr = vcpu->arch.mmu.mfsrin(vcpu, srnum);
|
|
kvmppc_set_gpr(vcpu, rt, sr);
|
|
}
|
|
break;
|
|
}
|
|
case OP_31_XOP_MTSR:
|
|
vcpu->arch.mmu.mtsrin(vcpu,
|
|
(inst >> 16) & 0xf,
|
|
kvmppc_get_gpr(vcpu, rs));
|
|
break;
|
|
case OP_31_XOP_MTSRIN:
|
|
vcpu->arch.mmu.mtsrin(vcpu,
|
|
(kvmppc_get_gpr(vcpu, rb) >> 28) & 0xf,
|
|
kvmppc_get_gpr(vcpu, rs));
|
|
break;
|
|
case OP_31_XOP_TLBIE:
|
|
case OP_31_XOP_TLBIEL:
|
|
{
|
|
bool large = (inst & 0x00200000) ? true : false;
|
|
ulong addr = kvmppc_get_gpr(vcpu, rb);
|
|
vcpu->arch.mmu.tlbie(vcpu, addr, large);
|
|
break;
|
|
}
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case OP_31_XOP_FAKE_SC1:
|
|
{
|
|
/* SC 1 papr hypercalls */
|
|
ulong cmd = kvmppc_get_gpr(vcpu, 3);
|
|
int i;
|
|
|
|
if ((kvmppc_get_msr(vcpu) & MSR_PR) ||
|
|
!vcpu->arch.papr_enabled) {
|
|
emulated = EMULATE_FAIL;
|
|
break;
|
|
}
|
|
|
|
if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE)
|
|
break;
|
|
|
|
vcpu->run->papr_hcall.nr = cmd;
|
|
for (i = 0; i < 9; ++i) {
|
|
ulong gpr = kvmppc_get_gpr(vcpu, 4 + i);
|
|
vcpu->run->papr_hcall.args[i] = gpr;
|
|
}
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_PAPR_HCALL;
|
|
vcpu->arch.hcall_needed = 1;
|
|
emulated = EMULATE_EXIT_USER;
|
|
break;
|
|
}
|
|
#endif
|
|
case OP_31_XOP_EIOIO:
|
|
break;
|
|
case OP_31_XOP_SLBMTE:
|
|
if (!vcpu->arch.mmu.slbmte)
|
|
return EMULATE_FAIL;
|
|
|
|
vcpu->arch.mmu.slbmte(vcpu,
|
|
kvmppc_get_gpr(vcpu, rs),
|
|
kvmppc_get_gpr(vcpu, rb));
|
|
break;
|
|
case OP_31_XOP_SLBIE:
|
|
if (!vcpu->arch.mmu.slbie)
|
|
return EMULATE_FAIL;
|
|
|
|
vcpu->arch.mmu.slbie(vcpu,
|
|
kvmppc_get_gpr(vcpu, rb));
|
|
break;
|
|
case OP_31_XOP_SLBIA:
|
|
if (!vcpu->arch.mmu.slbia)
|
|
return EMULATE_FAIL;
|
|
|
|
vcpu->arch.mmu.slbia(vcpu);
|
|
break;
|
|
case OP_31_XOP_SLBFEE:
|
|
if (!(inst & 1) || !vcpu->arch.mmu.slbfee) {
|
|
return EMULATE_FAIL;
|
|
} else {
|
|
ulong b, t;
|
|
ulong cr = kvmppc_get_cr(vcpu) & ~CR0_MASK;
|
|
|
|
b = kvmppc_get_gpr(vcpu, rb);
|
|
if (!vcpu->arch.mmu.slbfee(vcpu, b, &t))
|
|
cr |= 2 << CR0_SHIFT;
|
|
kvmppc_set_gpr(vcpu, rt, t);
|
|
/* copy XER[SO] bit to CR0[SO] */
|
|
cr |= (vcpu->arch.regs.xer & 0x80000000) >>
|
|
(31 - CR0_SHIFT);
|
|
kvmppc_set_cr(vcpu, cr);
|
|
}
|
|
break;
|
|
case OP_31_XOP_SLBMFEE:
|
|
if (!vcpu->arch.mmu.slbmfee) {
|
|
emulated = EMULATE_FAIL;
|
|
} else {
|
|
ulong t, rb_val;
|
|
|
|
rb_val = kvmppc_get_gpr(vcpu, rb);
|
|
t = vcpu->arch.mmu.slbmfee(vcpu, rb_val);
|
|
kvmppc_set_gpr(vcpu, rt, t);
|
|
}
|
|
break;
|
|
case OP_31_XOP_SLBMFEV:
|
|
if (!vcpu->arch.mmu.slbmfev) {
|
|
emulated = EMULATE_FAIL;
|
|
} else {
|
|
ulong t, rb_val;
|
|
|
|
rb_val = kvmppc_get_gpr(vcpu, rb);
|
|
t = vcpu->arch.mmu.slbmfev(vcpu, rb_val);
|
|
kvmppc_set_gpr(vcpu, rt, t);
|
|
}
|
|
break;
|
|
case OP_31_XOP_DCBA:
|
|
/* Gets treated as NOP */
|
|
break;
|
|
case OP_31_XOP_DCBZ:
|
|
{
|
|
ulong rb_val = kvmppc_get_gpr(vcpu, rb);
|
|
ulong ra_val = 0;
|
|
ulong addr, vaddr;
|
|
u32 zeros[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
|
|
u32 dsisr;
|
|
int r;
|
|
|
|
if (ra)
|
|
ra_val = kvmppc_get_gpr(vcpu, ra);
|
|
|
|
addr = (ra_val + rb_val) & ~31ULL;
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_SF))
|
|
addr &= 0xffffffff;
|
|
vaddr = addr;
|
|
|
|
r = kvmppc_st(vcpu, &addr, 32, zeros, true);
|
|
if ((r == -ENOENT) || (r == -EPERM)) {
|
|
*advance = 0;
|
|
kvmppc_set_dar(vcpu, vaddr);
|
|
vcpu->arch.fault_dar = vaddr;
|
|
|
|
dsisr = DSISR_ISSTORE;
|
|
if (r == -ENOENT)
|
|
dsisr |= DSISR_NOHPTE;
|
|
else if (r == -EPERM)
|
|
dsisr |= DSISR_PROTFAULT;
|
|
|
|
kvmppc_set_dsisr(vcpu, dsisr);
|
|
vcpu->arch.fault_dsisr = dsisr;
|
|
|
|
kvmppc_book3s_queue_irqprio(vcpu,
|
|
BOOK3S_INTERRUPT_DATA_STORAGE);
|
|
}
|
|
|
|
break;
|
|
}
|
|
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
|
case OP_31_XOP_TBEGIN:
|
|
{
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_PR)) {
|
|
preempt_disable();
|
|
vcpu->arch.regs.ccr = (CR0_TBEGIN_FAILURE |
|
|
(vcpu->arch.regs.ccr & ~(CR0_MASK << CR0_SHIFT)));
|
|
|
|
vcpu->arch.texasr = (TEXASR_FS | TEXASR_EXACT |
|
|
(((u64)(TM_CAUSE_EMULATE | TM_CAUSE_PERSISTENT))
|
|
<< TEXASR_FC_LG));
|
|
|
|
if ((inst >> 21) & 0x1)
|
|
vcpu->arch.texasr |= TEXASR_ROT;
|
|
|
|
if (kvmppc_get_msr(vcpu) & MSR_HV)
|
|
vcpu->arch.texasr |= TEXASR_HV;
|
|
|
|
vcpu->arch.tfhar = kvmppc_get_pc(vcpu) + 4;
|
|
vcpu->arch.tfiar = kvmppc_get_pc(vcpu);
|
|
|
|
kvmppc_restore_tm_sprs(vcpu);
|
|
preempt_enable();
|
|
} else
|
|
emulated = EMULATE_FAIL;
|
|
break;
|
|
}
|
|
case OP_31_XOP_TABORT:
|
|
{
|
|
ulong guest_msr = kvmppc_get_msr(vcpu);
|
|
unsigned long ra_val = 0;
|
|
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
/* only emulate for privilege guest, since problem state
|
|
* guest can run with TM enabled and we don't expect to
|
|
* trap at here for that case.
|
|
*/
|
|
WARN_ON(guest_msr & MSR_PR);
|
|
|
|
if (ra)
|
|
ra_val = kvmppc_get_gpr(vcpu, ra);
|
|
|
|
kvmppc_emulate_tabort(vcpu, ra_val);
|
|
break;
|
|
}
|
|
case OP_31_XOP_TRECLAIM:
|
|
{
|
|
ulong guest_msr = kvmppc_get_msr(vcpu);
|
|
unsigned long ra_val = 0;
|
|
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
/* generate interrupts based on priorities */
|
|
if (guest_msr & MSR_PR) {
|
|
/* Privileged Instruction type Program Interrupt */
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGPRIV);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
if (!MSR_TM_ACTIVE(guest_msr)) {
|
|
/* TM bad thing interrupt */
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGTM);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
if (ra)
|
|
ra_val = kvmppc_get_gpr(vcpu, ra);
|
|
kvmppc_emulate_treclaim(vcpu, ra_val);
|
|
break;
|
|
}
|
|
case OP_31_XOP_TRCHKPT:
|
|
{
|
|
ulong guest_msr = kvmppc_get_msr(vcpu);
|
|
unsigned long texasr;
|
|
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
/* generate interrupt based on priorities */
|
|
if (guest_msr & MSR_PR) {
|
|
/* Privileged Instruction type Program Intr */
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGPRIV);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
tm_enable();
|
|
texasr = mfspr(SPRN_TEXASR);
|
|
tm_disable();
|
|
|
|
if (MSR_TM_ACTIVE(guest_msr) ||
|
|
!(texasr & (TEXASR_FS))) {
|
|
/* TM bad thing interrupt */
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGTM);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
kvmppc_emulate_trchkpt(vcpu);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
emulated = EMULATE_FAIL;
|
|
}
|
|
break;
|
|
default:
|
|
emulated = EMULATE_FAIL;
|
|
}
|
|
|
|
if (emulated == EMULATE_FAIL)
|
|
emulated = kvmppc_emulate_paired_single(vcpu);
|
|
|
|
return emulated;
|
|
}
|
|
|
|
void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, bool upper,
|
|
u32 val)
|
|
{
|
|
if (upper) {
|
|
/* Upper BAT */
|
|
u32 bl = (val >> 2) & 0x7ff;
|
|
bat->bepi_mask = (~bl << 17);
|
|
bat->bepi = val & 0xfffe0000;
|
|
bat->vs = (val & 2) ? 1 : 0;
|
|
bat->vp = (val & 1) ? 1 : 0;
|
|
bat->raw = (bat->raw & 0xffffffff00000000ULL) | val;
|
|
} else {
|
|
/* Lower BAT */
|
|
bat->brpn = val & 0xfffe0000;
|
|
bat->wimg = (val >> 3) & 0xf;
|
|
bat->pp = val & 3;
|
|
bat->raw = (bat->raw & 0x00000000ffffffffULL) | ((u64)val << 32);
|
|
}
|
|
}
|
|
|
|
static struct kvmppc_bat *kvmppc_find_bat(struct kvm_vcpu *vcpu, int sprn)
|
|
{
|
|
struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
|
|
struct kvmppc_bat *bat;
|
|
|
|
switch (sprn) {
|
|
case SPRN_IBAT0U ... SPRN_IBAT3L:
|
|
bat = &vcpu_book3s->ibat[(sprn - SPRN_IBAT0U) / 2];
|
|
break;
|
|
case SPRN_IBAT4U ... SPRN_IBAT7L:
|
|
bat = &vcpu_book3s->ibat[4 + ((sprn - SPRN_IBAT4U) / 2)];
|
|
break;
|
|
case SPRN_DBAT0U ... SPRN_DBAT3L:
|
|
bat = &vcpu_book3s->dbat[(sprn - SPRN_DBAT0U) / 2];
|
|
break;
|
|
case SPRN_DBAT4U ... SPRN_DBAT7L:
|
|
bat = &vcpu_book3s->dbat[4 + ((sprn - SPRN_DBAT4U) / 2)];
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
return bat;
|
|
}
|
|
|
|
int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
|
|
switch (sprn) {
|
|
case SPRN_SDR1:
|
|
if (!spr_allowed(vcpu, PRIV_HYPER))
|
|
goto unprivileged;
|
|
to_book3s(vcpu)->sdr1 = spr_val;
|
|
break;
|
|
case SPRN_DSISR:
|
|
kvmppc_set_dsisr(vcpu, spr_val);
|
|
break;
|
|
case SPRN_DAR:
|
|
kvmppc_set_dar(vcpu, spr_val);
|
|
break;
|
|
case SPRN_HIOR:
|
|
to_book3s(vcpu)->hior = spr_val;
|
|
break;
|
|
case SPRN_IBAT0U ... SPRN_IBAT3L:
|
|
case SPRN_IBAT4U ... SPRN_IBAT7L:
|
|
case SPRN_DBAT0U ... SPRN_DBAT3L:
|
|
case SPRN_DBAT4U ... SPRN_DBAT7L:
|
|
{
|
|
struct kvmppc_bat *bat = kvmppc_find_bat(vcpu, sprn);
|
|
|
|
kvmppc_set_bat(vcpu, bat, !(sprn % 2), (u32)spr_val);
|
|
/* BAT writes happen so rarely that we're ok to flush
|
|
* everything here */
|
|
kvmppc_mmu_pte_flush(vcpu, 0, 0);
|
|
kvmppc_mmu_flush_segments(vcpu);
|
|
break;
|
|
}
|
|
case SPRN_HID0:
|
|
to_book3s(vcpu)->hid[0] = spr_val;
|
|
break;
|
|
case SPRN_HID1:
|
|
to_book3s(vcpu)->hid[1] = spr_val;
|
|
break;
|
|
case SPRN_HID2:
|
|
to_book3s(vcpu)->hid[2] = spr_val;
|
|
break;
|
|
case SPRN_HID2_GEKKO:
|
|
to_book3s(vcpu)->hid[2] = spr_val;
|
|
/* HID2.PSE controls paired single on gekko */
|
|
switch (vcpu->arch.pvr) {
|
|
case 0x00080200: /* lonestar 2.0 */
|
|
case 0x00088202: /* lonestar 2.2 */
|
|
case 0x70000100: /* gekko 1.0 */
|
|
case 0x00080100: /* gekko 2.0 */
|
|
case 0x00083203: /* gekko 2.3a */
|
|
case 0x00083213: /* gekko 2.3b */
|
|
case 0x00083204: /* gekko 2.4 */
|
|
case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */
|
|
case 0x00087200: /* broadway */
|
|
if (vcpu->arch.hflags & BOOK3S_HFLAG_NATIVE_PS) {
|
|
/* Native paired singles */
|
|
} else if (spr_val & (1 << 29)) { /* HID2.PSE */
|
|
vcpu->arch.hflags |= BOOK3S_HFLAG_PAIRED_SINGLE;
|
|
kvmppc_giveup_ext(vcpu, MSR_FP);
|
|
} else {
|
|
vcpu->arch.hflags &= ~BOOK3S_HFLAG_PAIRED_SINGLE;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case SPRN_HID4:
|
|
case SPRN_HID4_GEKKO:
|
|
to_book3s(vcpu)->hid[4] = spr_val;
|
|
break;
|
|
case SPRN_HID5:
|
|
to_book3s(vcpu)->hid[5] = spr_val;
|
|
/* guest HID5 set can change is_dcbz32 */
|
|
if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
|
|
(mfmsr() & MSR_HV))
|
|
vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
|
|
break;
|
|
case SPRN_GQR0:
|
|
case SPRN_GQR1:
|
|
case SPRN_GQR2:
|
|
case SPRN_GQR3:
|
|
case SPRN_GQR4:
|
|
case SPRN_GQR5:
|
|
case SPRN_GQR6:
|
|
case SPRN_GQR7:
|
|
to_book3s(vcpu)->gqr[sprn - SPRN_GQR0] = spr_val;
|
|
break;
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case SPRN_FSCR:
|
|
kvmppc_set_fscr(vcpu, spr_val);
|
|
break;
|
|
case SPRN_BESCR:
|
|
vcpu->arch.bescr = spr_val;
|
|
break;
|
|
case SPRN_EBBHR:
|
|
vcpu->arch.ebbhr = spr_val;
|
|
break;
|
|
case SPRN_EBBRR:
|
|
vcpu->arch.ebbrr = spr_val;
|
|
break;
|
|
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
|
case SPRN_TFHAR:
|
|
case SPRN_TEXASR:
|
|
case SPRN_TFIAR:
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
if (MSR_TM_ACTIVE(kvmppc_get_msr(vcpu)) &&
|
|
!((MSR_TM_SUSPENDED(kvmppc_get_msr(vcpu))) &&
|
|
(sprn == SPRN_TFHAR))) {
|
|
/* it is illegal to mtspr() TM regs in
|
|
* other than non-transactional state, with
|
|
* the exception of TFHAR in suspend state.
|
|
*/
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGTM);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
tm_enable();
|
|
if (sprn == SPRN_TFHAR)
|
|
mtspr(SPRN_TFHAR, spr_val);
|
|
else if (sprn == SPRN_TEXASR)
|
|
mtspr(SPRN_TEXASR, spr_val);
|
|
else
|
|
mtspr(SPRN_TFIAR, spr_val);
|
|
tm_disable();
|
|
|
|
break;
|
|
#endif
|
|
#endif
|
|
case SPRN_ICTC:
|
|
case SPRN_THRM1:
|
|
case SPRN_THRM2:
|
|
case SPRN_THRM3:
|
|
case SPRN_CTRLF:
|
|
case SPRN_CTRLT:
|
|
case SPRN_L2CR:
|
|
case SPRN_DSCR:
|
|
case SPRN_MMCR0_GEKKO:
|
|
case SPRN_MMCR1_GEKKO:
|
|
case SPRN_PMC1_GEKKO:
|
|
case SPRN_PMC2_GEKKO:
|
|
case SPRN_PMC3_GEKKO:
|
|
case SPRN_PMC4_GEKKO:
|
|
case SPRN_WPAR_GEKKO:
|
|
case SPRN_MSSSR0:
|
|
case SPRN_DABR:
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case SPRN_MMCRS:
|
|
case SPRN_MMCRA:
|
|
case SPRN_MMCR0:
|
|
case SPRN_MMCR1:
|
|
case SPRN_MMCR2:
|
|
case SPRN_UMMCR2:
|
|
case SPRN_UAMOR:
|
|
case SPRN_IAMR:
|
|
case SPRN_AMR:
|
|
#endif
|
|
break;
|
|
unprivileged:
|
|
default:
|
|
pr_info_ratelimited("KVM: invalid SPR write: %d\n", sprn);
|
|
if (sprn & 0x10) {
|
|
if (kvmppc_get_msr(vcpu) & MSR_PR) {
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGPRIV);
|
|
emulated = EMULATE_AGAIN;
|
|
}
|
|
} else {
|
|
if ((kvmppc_get_msr(vcpu) & MSR_PR) || sprn == 0) {
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
|
|
emulated = EMULATE_AGAIN;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return emulated;
|
|
}
|
|
|
|
int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
|
|
switch (sprn) {
|
|
case SPRN_IBAT0U ... SPRN_IBAT3L:
|
|
case SPRN_IBAT4U ... SPRN_IBAT7L:
|
|
case SPRN_DBAT0U ... SPRN_DBAT3L:
|
|
case SPRN_DBAT4U ... SPRN_DBAT7L:
|
|
{
|
|
struct kvmppc_bat *bat = kvmppc_find_bat(vcpu, sprn);
|
|
|
|
if (sprn % 2)
|
|
*spr_val = bat->raw >> 32;
|
|
else
|
|
*spr_val = bat->raw;
|
|
|
|
break;
|
|
}
|
|
case SPRN_SDR1:
|
|
if (!spr_allowed(vcpu, PRIV_HYPER))
|
|
goto unprivileged;
|
|
*spr_val = to_book3s(vcpu)->sdr1;
|
|
break;
|
|
case SPRN_DSISR:
|
|
*spr_val = kvmppc_get_dsisr(vcpu);
|
|
break;
|
|
case SPRN_DAR:
|
|
*spr_val = kvmppc_get_dar(vcpu);
|
|
break;
|
|
case SPRN_HIOR:
|
|
*spr_val = to_book3s(vcpu)->hior;
|
|
break;
|
|
case SPRN_HID0:
|
|
*spr_val = to_book3s(vcpu)->hid[0];
|
|
break;
|
|
case SPRN_HID1:
|
|
*spr_val = to_book3s(vcpu)->hid[1];
|
|
break;
|
|
case SPRN_HID2:
|
|
case SPRN_HID2_GEKKO:
|
|
*spr_val = to_book3s(vcpu)->hid[2];
|
|
break;
|
|
case SPRN_HID4:
|
|
case SPRN_HID4_GEKKO:
|
|
*spr_val = to_book3s(vcpu)->hid[4];
|
|
break;
|
|
case SPRN_HID5:
|
|
*spr_val = to_book3s(vcpu)->hid[5];
|
|
break;
|
|
case SPRN_CFAR:
|
|
case SPRN_DSCR:
|
|
*spr_val = 0;
|
|
break;
|
|
case SPRN_PURR:
|
|
/*
|
|
* On exit we would have updated purr
|
|
*/
|
|
*spr_val = vcpu->arch.purr;
|
|
break;
|
|
case SPRN_SPURR:
|
|
/*
|
|
* On exit we would have updated spurr
|
|
*/
|
|
*spr_val = vcpu->arch.spurr;
|
|
break;
|
|
case SPRN_VTB:
|
|
*spr_val = to_book3s(vcpu)->vtb;
|
|
break;
|
|
case SPRN_IC:
|
|
*spr_val = vcpu->arch.ic;
|
|
break;
|
|
case SPRN_GQR0:
|
|
case SPRN_GQR1:
|
|
case SPRN_GQR2:
|
|
case SPRN_GQR3:
|
|
case SPRN_GQR4:
|
|
case SPRN_GQR5:
|
|
case SPRN_GQR6:
|
|
case SPRN_GQR7:
|
|
*spr_val = to_book3s(vcpu)->gqr[sprn - SPRN_GQR0];
|
|
break;
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case SPRN_FSCR:
|
|
*spr_val = vcpu->arch.fscr;
|
|
break;
|
|
case SPRN_BESCR:
|
|
*spr_val = vcpu->arch.bescr;
|
|
break;
|
|
case SPRN_EBBHR:
|
|
*spr_val = vcpu->arch.ebbhr;
|
|
break;
|
|
case SPRN_EBBRR:
|
|
*spr_val = vcpu->arch.ebbrr;
|
|
break;
|
|
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
|
|
case SPRN_TFHAR:
|
|
case SPRN_TEXASR:
|
|
case SPRN_TFIAR:
|
|
if (!cpu_has_feature(CPU_FTR_TM))
|
|
break;
|
|
|
|
if (!(kvmppc_get_msr(vcpu) & MSR_TM)) {
|
|
kvmppc_trigger_fac_interrupt(vcpu, FSCR_TM_LG);
|
|
emulated = EMULATE_AGAIN;
|
|
break;
|
|
}
|
|
|
|
tm_enable();
|
|
if (sprn == SPRN_TFHAR)
|
|
*spr_val = mfspr(SPRN_TFHAR);
|
|
else if (sprn == SPRN_TEXASR)
|
|
*spr_val = mfspr(SPRN_TEXASR);
|
|
else if (sprn == SPRN_TFIAR)
|
|
*spr_val = mfspr(SPRN_TFIAR);
|
|
tm_disable();
|
|
break;
|
|
#endif
|
|
#endif
|
|
case SPRN_THRM1:
|
|
case SPRN_THRM2:
|
|
case SPRN_THRM3:
|
|
case SPRN_CTRLF:
|
|
case SPRN_CTRLT:
|
|
case SPRN_L2CR:
|
|
case SPRN_MMCR0_GEKKO:
|
|
case SPRN_MMCR1_GEKKO:
|
|
case SPRN_PMC1_GEKKO:
|
|
case SPRN_PMC2_GEKKO:
|
|
case SPRN_PMC3_GEKKO:
|
|
case SPRN_PMC4_GEKKO:
|
|
case SPRN_WPAR_GEKKO:
|
|
case SPRN_MSSSR0:
|
|
case SPRN_DABR:
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case SPRN_MMCRS:
|
|
case SPRN_MMCRA:
|
|
case SPRN_MMCR0:
|
|
case SPRN_MMCR1:
|
|
case SPRN_MMCR2:
|
|
case SPRN_UMMCR2:
|
|
case SPRN_TIR:
|
|
case SPRN_UAMOR:
|
|
case SPRN_IAMR:
|
|
case SPRN_AMR:
|
|
#endif
|
|
*spr_val = 0;
|
|
break;
|
|
default:
|
|
unprivileged:
|
|
pr_info_ratelimited("KVM: invalid SPR read: %d\n", sprn);
|
|
if (sprn & 0x10) {
|
|
if (kvmppc_get_msr(vcpu) & MSR_PR) {
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGPRIV);
|
|
emulated = EMULATE_AGAIN;
|
|
}
|
|
} else {
|
|
if ((kvmppc_get_msr(vcpu) & MSR_PR) || sprn == 0 ||
|
|
sprn == 4 || sprn == 5 || sprn == 6) {
|
|
kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
|
|
emulated = EMULATE_AGAIN;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return emulated;
|
|
}
|
|
|
|
u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst)
|
|
{
|
|
return make_dsisr(inst);
|
|
}
|
|
|
|
ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst)
|
|
{
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
/*
|
|
* Linux's fix_alignment() assumes that DAR is valid, so can we
|
|
*/
|
|
return vcpu->arch.fault_dar;
|
|
#else
|
|
ulong dar = 0;
|
|
ulong ra = get_ra(inst);
|
|
ulong rb = get_rb(inst);
|
|
|
|
switch (get_op(inst)) {
|
|
case OP_LFS:
|
|
case OP_LFD:
|
|
case OP_STFD:
|
|
case OP_STFS:
|
|
if (ra)
|
|
dar = kvmppc_get_gpr(vcpu, ra);
|
|
dar += (s32)((s16)inst);
|
|
break;
|
|
case 31:
|
|
if (ra)
|
|
dar = kvmppc_get_gpr(vcpu, ra);
|
|
dar += kvmppc_get_gpr(vcpu, rb);
|
|
break;
|
|
default:
|
|
printk(KERN_INFO "KVM: Unaligned instruction 0x%x\n", inst);
|
|
break;
|
|
}
|
|
|
|
return dar;
|
|
#endif
|
|
}
|