mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 03:33:59 +08:00
d0c7dc0344
The Book E code will be shared with e500. I've left PID in kvmppc_core_emulate_op() just so that we don't need to move kvmppc_set_pid() right now. Once we have the e500 implementation, we can probably share that too. Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@redhat.com>
185 lines
4.4 KiB
C
185 lines
4.4 KiB
C
/*
|
|
* 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 IBM Corp. 2008
|
|
*
|
|
* Authors: Hollis Blanchard <hollisb@us.ibm.com>
|
|
*/
|
|
|
|
#include <asm/kvm_ppc.h>
|
|
#include <asm/dcr.h>
|
|
#include <asm/dcr-regs.h>
|
|
#include <asm/disassemble.h>
|
|
#include <asm/kvm_44x.h>
|
|
#include "timing.h"
|
|
|
|
#include "booke.h"
|
|
#include "44x_tlb.h"
|
|
|
|
#define XOP_MFDCR 323
|
|
#define XOP_MTDCR 451
|
|
#define XOP_TLBSX 914
|
|
#define XOP_ICCCI 966
|
|
#define XOP_TLBWE 978
|
|
|
|
int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu,
|
|
unsigned int inst, int *advance)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
int dcrn;
|
|
int ra;
|
|
int rb;
|
|
int rc;
|
|
int rs;
|
|
int rt;
|
|
int ws;
|
|
|
|
switch (get_op(inst)) {
|
|
case 31:
|
|
switch (get_xop(inst)) {
|
|
|
|
case XOP_MFDCR:
|
|
dcrn = get_dcrn(inst);
|
|
rt = get_rt(inst);
|
|
|
|
/* The guest may access CPR0 registers to determine the timebase
|
|
* frequency, and it must know the real host frequency because it
|
|
* can directly access the timebase registers.
|
|
*
|
|
* It would be possible to emulate those accesses in userspace,
|
|
* but userspace can really only figure out the end frequency.
|
|
* We could decompose that into the factors that compute it, but
|
|
* that's tricky math, and it's easier to just report the real
|
|
* CPR0 values.
|
|
*/
|
|
switch (dcrn) {
|
|
case DCRN_CPR0_CONFIG_ADDR:
|
|
vcpu->arch.gpr[rt] = vcpu->arch.cpr0_cfgaddr;
|
|
break;
|
|
case DCRN_CPR0_CONFIG_DATA:
|
|
local_irq_disable();
|
|
mtdcr(DCRN_CPR0_CONFIG_ADDR,
|
|
vcpu->arch.cpr0_cfgaddr);
|
|
vcpu->arch.gpr[rt] = mfdcr(DCRN_CPR0_CONFIG_DATA);
|
|
local_irq_enable();
|
|
break;
|
|
default:
|
|
run->dcr.dcrn = dcrn;
|
|
run->dcr.data = 0;
|
|
run->dcr.is_write = 0;
|
|
vcpu->arch.io_gpr = rt;
|
|
vcpu->arch.dcr_needed = 1;
|
|
kvmppc_account_exit(vcpu, DCR_EXITS);
|
|
emulated = EMULATE_DO_DCR;
|
|
}
|
|
|
|
break;
|
|
|
|
case XOP_MTDCR:
|
|
dcrn = get_dcrn(inst);
|
|
rs = get_rs(inst);
|
|
|
|
/* emulate some access in kernel */
|
|
switch (dcrn) {
|
|
case DCRN_CPR0_CONFIG_ADDR:
|
|
vcpu->arch.cpr0_cfgaddr = vcpu->arch.gpr[rs];
|
|
break;
|
|
default:
|
|
run->dcr.dcrn = dcrn;
|
|
run->dcr.data = vcpu->arch.gpr[rs];
|
|
run->dcr.is_write = 1;
|
|
vcpu->arch.dcr_needed = 1;
|
|
kvmppc_account_exit(vcpu, DCR_EXITS);
|
|
emulated = EMULATE_DO_DCR;
|
|
}
|
|
|
|
break;
|
|
|
|
case XOP_TLBWE:
|
|
ra = get_ra(inst);
|
|
rs = get_rs(inst);
|
|
ws = get_ws(inst);
|
|
emulated = kvmppc_44x_emul_tlbwe(vcpu, ra, rs, ws);
|
|
break;
|
|
|
|
case XOP_TLBSX:
|
|
rt = get_rt(inst);
|
|
ra = get_ra(inst);
|
|
rb = get_rb(inst);
|
|
rc = get_rc(inst);
|
|
emulated = kvmppc_44x_emul_tlbsx(vcpu, rt, ra, rb, rc);
|
|
break;
|
|
|
|
case XOP_ICCCI:
|
|
break;
|
|
|
|
default:
|
|
emulated = EMULATE_FAIL;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
emulated = EMULATE_FAIL;
|
|
}
|
|
|
|
if (emulated == EMULATE_FAIL)
|
|
emulated = kvmppc_booke_emulate_op(run, vcpu, inst, advance);
|
|
|
|
return emulated;
|
|
}
|
|
|
|
int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
|
|
switch (sprn) {
|
|
case SPRN_PID:
|
|
kvmppc_set_pid(vcpu, vcpu->arch.gpr[rs]); break;
|
|
case SPRN_MMUCR:
|
|
vcpu->arch.mmucr = vcpu->arch.gpr[rs]; break;
|
|
case SPRN_CCR0:
|
|
vcpu->arch.ccr0 = vcpu->arch.gpr[rs]; break;
|
|
case SPRN_CCR1:
|
|
vcpu->arch.ccr1 = vcpu->arch.gpr[rs]; break;
|
|
default:
|
|
emulated = kvmppc_booke_emulate_mtspr(vcpu, sprn, rs);
|
|
}
|
|
|
|
kvmppc_set_exit_type(vcpu, EMULATED_MTSPR_EXITS);
|
|
return emulated;
|
|
}
|
|
|
|
int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt)
|
|
{
|
|
int emulated = EMULATE_DONE;
|
|
|
|
switch (sprn) {
|
|
case SPRN_PID:
|
|
vcpu->arch.gpr[rt] = vcpu->arch.pid; break;
|
|
case SPRN_MMUCR:
|
|
vcpu->arch.gpr[rt] = vcpu->arch.mmucr; break;
|
|
case SPRN_CCR0:
|
|
vcpu->arch.gpr[rt] = vcpu->arch.ccr0; break;
|
|
case SPRN_CCR1:
|
|
vcpu->arch.gpr[rt] = vcpu->arch.ccr1; break;
|
|
default:
|
|
emulated = kvmppc_booke_emulate_mfspr(vcpu, sprn, rt);
|
|
}
|
|
|
|
kvmppc_set_exit_type(vcpu, EMULATED_MFSPR_EXITS);
|
|
return emulated;
|
|
}
|
|
|