/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* 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_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
/* Book3S_32 defines mfsrin(v) - but that messes up our abstract
* function pointers, so let's just disable the define. */
#undef mfsrin
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