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qemu/target/loongarch/kvm/kvm.c
Bibo Mao 61f6e1509d target/loongarch: Set cpuid CSR register only once with kvm mode 
CSR cpuid register is used for routing irq to different vcpus, its
value is kept unchanged since poweron. So it is not necessary to
set CSR cpuid register after system resets, and it is only set at
vm creation stage.

Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Song Gao <gaosong@loongson.cn>
Message-Id: <20240115085121.180524-1-maobibo@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
2024-01-25 15:25:03 +08:00

771 lines
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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* QEMU LoongArch KVM
*
* Copyright (c) 2023 Loongson Technology Corporation Limited
*/
#include "qemu/osdep.h"
#include <sys/ioctl.h>
#include <linux/kvm.h>
#include "qemu/timer.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "sysemu/sysemu.h"
#include "sysemu/kvm.h"
#include "sysemu/kvm_int.h"
#include "hw/pci/pci.h"
#include "exec/memattrs.h"
#include "exec/address-spaces.h"
#include "hw/boards.h"
#include "hw/irq.h"
#include "qemu/log.h"
#include "hw/loader.h"
#include "migration/migration.h"
#include "sysemu/runstate.h"
#include "cpu-csr.h"
#include "kvm_loongarch.h"
#include "trace.h"
static bool cap_has_mp_state;
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_LAST_INFO
};
static int kvm_loongarch_get_regs_core(CPUState *cs)
{
int ret = 0;
int i;
struct kvm_regs regs;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
/* Get the current register set as KVM seems it */
ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, &regs);
if (ret < 0) {
trace_kvm_failed_get_regs_core(strerror(errno));
return ret;
}
/* gpr[0] value is always 0 */
env->gpr[0] = 0;
for (i = 1; i < 32; i++) {
env->gpr[i] = regs.gpr[i];
}
env->pc = regs.pc;
return ret;
}
static int kvm_loongarch_put_regs_core(CPUState *cs)
{
int ret = 0;
int i;
struct kvm_regs regs;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
/* Set the registers based on QEMU's view of things */
for (i = 0; i < 32; i++) {
regs.gpr[i] = env->gpr[i];
}
regs.pc = env->pc;
ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, &regs);
if (ret < 0) {
trace_kvm_failed_put_regs_core(strerror(errno));
}
return ret;
}
static int kvm_loongarch_get_csr(CPUState *cs)
{
int ret = 0;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CRMD),
&env->CSR_CRMD);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRMD),
&env->CSR_PRMD);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EUEN),
&env->CSR_EUEN);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_MISC),
&env->CSR_MISC);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ECFG),
&env->CSR_ECFG);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ESTAT),
&env->CSR_ESTAT);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ERA),
&env->CSR_ERA);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADV),
&env->CSR_BADV);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADI),
&env->CSR_BADI);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EENTRY),
&env->CSR_EENTRY);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBIDX),
&env->CSR_TLBIDX);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBEHI),
&env->CSR_TLBEHI);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO0),
&env->CSR_TLBELO0);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO1),
&env->CSR_TLBELO1);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ASID),
&env->CSR_ASID);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDL),
&env->CSR_PGDL);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDH),
&env->CSR_PGDH);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGD),
&env->CSR_PGD);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCL),
&env->CSR_PWCL);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCH),
&env->CSR_PWCH);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_STLBPS),
&env->CSR_STLBPS);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_RVACFG),
&env->CSR_RVACFG);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CPUID),
&env->CSR_CPUID);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG1),
&env->CSR_PRCFG1);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG2),
&env->CSR_PRCFG2);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG3),
&env->CSR_PRCFG3);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(0)),
&env->CSR_SAVE[0]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(1)),
&env->CSR_SAVE[1]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(2)),
&env->CSR_SAVE[2]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(3)),
&env->CSR_SAVE[3]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(4)),
&env->CSR_SAVE[4]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(5)),
&env->CSR_SAVE[5]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(6)),
&env->CSR_SAVE[6]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(7)),
&env->CSR_SAVE[7]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TID),
&env->CSR_TID);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CNTC),
&env->CSR_CNTC);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TICLR),
&env->CSR_TICLR);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_LLBCTL),
&env->CSR_LLBCTL);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL1),
&env->CSR_IMPCTL1);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL2),
&env->CSR_IMPCTL2);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRENTRY),
&env->CSR_TLBRENTRY);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRBADV),
&env->CSR_TLBRBADV);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRERA),
&env->CSR_TLBRERA);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRSAVE),
&env->CSR_TLBRSAVE);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO0),
&env->CSR_TLBRELO0);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO1),
&env->CSR_TLBRELO1);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBREHI),
&env->CSR_TLBREHI);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRPRMD),
&env->CSR_TLBRPRMD);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(0)),
&env->CSR_DMW[0]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(1)),
&env->CSR_DMW[1]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(2)),
&env->CSR_DMW[2]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(3)),
&env->CSR_DMW[3]);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TVAL),
&env->CSR_TVAL);
ret |= kvm_get_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TCFG),
&env->CSR_TCFG);
return ret;
}
static int kvm_loongarch_put_csr(CPUState *cs, int level)
{
int ret = 0;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CRMD),
&env->CSR_CRMD);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRMD),
&env->CSR_PRMD);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EUEN),
&env->CSR_EUEN);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_MISC),
&env->CSR_MISC);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ECFG),
&env->CSR_ECFG);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ESTAT),
&env->CSR_ESTAT);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ERA),
&env->CSR_ERA);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADV),
&env->CSR_BADV);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_BADI),
&env->CSR_BADI);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_EENTRY),
&env->CSR_EENTRY);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBIDX),
&env->CSR_TLBIDX);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBEHI),
&env->CSR_TLBEHI);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO0),
&env->CSR_TLBELO0);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBELO1),
&env->CSR_TLBELO1);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_ASID),
&env->CSR_ASID);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDL),
&env->CSR_PGDL);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGDH),
&env->CSR_PGDH);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PGD),
&env->CSR_PGD);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCL),
&env->CSR_PWCL);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PWCH),
&env->CSR_PWCH);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_STLBPS),
&env->CSR_STLBPS);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_RVACFG),
&env->CSR_RVACFG);
/* CPUID is constant after poweron, it should be set only once */
if (level >= KVM_PUT_FULL_STATE) {
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CPUID),
&env->CSR_CPUID);
}
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG1),
&env->CSR_PRCFG1);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG2),
&env->CSR_PRCFG2);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_PRCFG3),
&env->CSR_PRCFG3);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(0)),
&env->CSR_SAVE[0]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(1)),
&env->CSR_SAVE[1]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(2)),
&env->CSR_SAVE[2]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(3)),
&env->CSR_SAVE[3]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(4)),
&env->CSR_SAVE[4]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(5)),
&env->CSR_SAVE[5]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(6)),
&env->CSR_SAVE[6]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_SAVE(7)),
&env->CSR_SAVE[7]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TID),
&env->CSR_TID);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_CNTC),
&env->CSR_CNTC);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TICLR),
&env->CSR_TICLR);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_LLBCTL),
&env->CSR_LLBCTL);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL1),
&env->CSR_IMPCTL1);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_IMPCTL2),
&env->CSR_IMPCTL2);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRENTRY),
&env->CSR_TLBRENTRY);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRBADV),
&env->CSR_TLBRBADV);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRERA),
&env->CSR_TLBRERA);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRSAVE),
&env->CSR_TLBRSAVE);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO0),
&env->CSR_TLBRELO0);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRELO1),
&env->CSR_TLBRELO1);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBREHI),
&env->CSR_TLBREHI);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TLBRPRMD),
&env->CSR_TLBRPRMD);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(0)),
&env->CSR_DMW[0]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(1)),
&env->CSR_DMW[1]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(2)),
&env->CSR_DMW[2]);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_DMW(3)),
&env->CSR_DMW[3]);
/*
* timer cfg must be put at last since it is used to enable
* guest timer
*/
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TVAL),
&env->CSR_TVAL);
ret |= kvm_set_one_reg(cs, KVM_IOC_CSRID(LOONGARCH_CSR_TCFG),
&env->CSR_TCFG);
return ret;
}
static int kvm_loongarch_get_regs_fp(CPUState *cs)
{
int ret, i;
struct kvm_fpu fpu;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
ret = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
if (ret < 0) {
trace_kvm_failed_get_fpu(strerror(errno));
return ret;
}
env->fcsr0 = fpu.fcsr;
for (i = 0; i < 32; i++) {
env->fpr[i].vreg.UD[0] = fpu.fpr[i].val64[0];
}
for (i = 0; i < 8; i++) {
env->cf[i] = fpu.fcc & 0xFF;
fpu.fcc = fpu.fcc >> 8;
}
return ret;
}
static int kvm_loongarch_put_regs_fp(CPUState *cs)
{
int ret, i;
struct kvm_fpu fpu;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
fpu.fcsr = env->fcsr0;
fpu.fcc = 0;
for (i = 0; i < 32; i++) {
fpu.fpr[i].val64[0] = env->fpr[i].vreg.UD[0];
}
for (i = 0; i < 8; i++) {
fpu.fcc |= env->cf[i] << (8 * i);
}
ret = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
if (ret < 0) {
trace_kvm_failed_put_fpu(strerror(errno));
}
return ret;
}
void kvm_arch_reset_vcpu(CPULoongArchState *env)
{
env->mp_state = KVM_MP_STATE_RUNNABLE;
}
static int kvm_loongarch_get_mpstate(CPUState *cs)
{
int ret = 0;
struct kvm_mp_state mp_state;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
if (cap_has_mp_state) {
ret = kvm_vcpu_ioctl(cs, KVM_GET_MP_STATE, &mp_state);
if (ret) {
trace_kvm_failed_get_mpstate(strerror(errno));
return ret;
}
env->mp_state = mp_state.mp_state;
}
return ret;
}
static int kvm_loongarch_put_mpstate(CPUState *cs)
{
int ret = 0;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
struct kvm_mp_state mp_state = {
.mp_state = env->mp_state
};
if (cap_has_mp_state) {
ret = kvm_vcpu_ioctl(cs, KVM_SET_MP_STATE, &mp_state);
if (ret) {
trace_kvm_failed_put_mpstate(strerror(errno));
}
}
return ret;
}
static int kvm_loongarch_get_cpucfg(CPUState *cs)
{
int i, ret = 0;
uint64_t val;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
for (i = 0; i < 21; i++) {
ret = kvm_get_one_reg(cs, KVM_IOC_CPUCFG(i), &val);
if (ret < 0) {
trace_kvm_failed_get_cpucfg(strerror(errno));
}
env->cpucfg[i] = (uint32_t)val;
}
return ret;
}
static int kvm_loongarch_put_cpucfg(CPUState *cs)
{
int i, ret = 0;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
uint64_t val;
for (i = 0; i < 21; i++) {
val = env->cpucfg[i];
/* LSX and LASX and LBT are not supported in kvm now */
if (i == 2) {
val &= ~(BIT(R_CPUCFG2_LSX_SHIFT) | BIT(R_CPUCFG2_LASX_SHIFT));
val &= ~(BIT(R_CPUCFG2_LBT_X86_SHIFT) |
BIT(R_CPUCFG2_LBT_ARM_SHIFT) |
BIT(R_CPUCFG2_LBT_MIPS_SHIFT));
}
ret = kvm_set_one_reg(cs, KVM_IOC_CPUCFG(i), &val);
if (ret < 0) {
trace_kvm_failed_put_cpucfg(strerror(errno));
}
}
return ret;
}
int kvm_arch_get_registers(CPUState *cs)
{
int ret;
ret = kvm_loongarch_get_regs_core(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_get_csr(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_get_regs_fp(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_get_mpstate(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_get_cpucfg(cs);
return ret;
}
int kvm_arch_put_registers(CPUState *cs, int level)
{
int ret;
ret = kvm_loongarch_put_regs_core(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_put_csr(cs, level);
if (ret) {
return ret;
}
ret = kvm_loongarch_put_regs_fp(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_put_mpstate(cs);
if (ret) {
return ret;
}
ret = kvm_loongarch_put_cpucfg(cs);
return ret;
}
static void kvm_loongarch_vm_stage_change(void *opaque, bool running,
RunState state)
{
int ret;
CPUState *cs = opaque;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
if (running) {
ret = kvm_set_one_reg(cs, KVM_REG_LOONGARCH_COUNTER,
&cpu->kvm_state_counter);
if (ret < 0) {
trace_kvm_failed_put_counter(strerror(errno));
}
} else {
ret = kvm_get_one_reg(cs, KVM_REG_LOONGARCH_COUNTER,
&cpu->kvm_state_counter);
if (ret < 0) {
trace_kvm_failed_get_counter(strerror(errno));
}
}
}
int kvm_arch_init_vcpu(CPUState *cs)
{
qemu_add_vm_change_state_handler(kvm_loongarch_vm_stage_change, cs);
return 0;
}
int kvm_arch_destroy_vcpu(CPUState *cs)
{
return 0;
}
unsigned long kvm_arch_vcpu_id(CPUState *cs)
{
return cs->cpu_index;
}
int kvm_arch_release_virq_post(int virq)
{
return 0;
}
int kvm_arch_msi_data_to_gsi(uint32_t data)
{
abort();
}
int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
uint64_t address, uint32_t data, PCIDevice *dev)
{
return 0;
}
int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route,
int vector, PCIDevice *dev)
{
return 0;
}
void kvm_arch_init_irq_routing(KVMState *s)
{
}
int kvm_arch_get_default_type(MachineState *ms)
{
return 0;
}
int kvm_arch_init(MachineState *ms, KVMState *s)
{
cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE);
return 0;
}
int kvm_arch_irqchip_create(KVMState *s)
{
return 0;
}
void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
{
}
MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
{
return MEMTXATTRS_UNSPECIFIED;
}
int kvm_arch_process_async_events(CPUState *cs)
{
return cs->halted;
}
bool kvm_arch_stop_on_emulation_error(CPUState *cs)
{
return true;
}
bool kvm_arch_cpu_check_are_resettable(void)
{
return true;
}
int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
{
int ret = 0;
LoongArchCPU *cpu = LOONGARCH_CPU(cs);
CPULoongArchState *env = &cpu->env;
MemTxAttrs attrs = {};
attrs.requester_id = env_cpu(env)->cpu_index;
trace_kvm_arch_handle_exit(run->exit_reason);
switch (run->exit_reason) {
case KVM_EXIT_LOONGARCH_IOCSR:
address_space_rw(env->address_space_iocsr,
run->iocsr_io.phys_addr,
attrs,
run->iocsr_io.data,
run->iocsr_io.len,
run->iocsr_io.is_write);
break;
default:
ret = -1;
warn_report("KVM: unknown exit reason %d", run->exit_reason);
break;
}
return ret;
}
int kvm_loongarch_set_interrupt(LoongArchCPU *cpu, int irq, int level)
{
struct kvm_interrupt intr;
CPUState *cs = CPU(cpu);
if (level) {
intr.irq = irq;
} else {
intr.irq = -irq;
}
trace_kvm_set_intr(irq, level);
return kvm_vcpu_ioctl(cs, KVM_INTERRUPT, &intr);
}
void kvm_arch_accel_class_init(ObjectClass *oc)
{
}
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