* PowerPC implementation of KVM hooks
*
* Copyright IBM Corp. 2007
+ * Copyright (C) 2011 Freescale Semiconductor, Inc.
*
* Authors:
* Jerone Young <jyoung5@us.ibm.com>
do { } while (0)
#endif
-/* XXX For some odd reason we sometimes hang inside KVM forever. I'd guess it's
- * a race condition where we actually have a level triggered interrupt, but
- * the infrastructure can't expose that yet, so the guest ACKs it, goes to
- * sleep and never gets notified that there's still an interrupt pending.
+const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
+ KVM_CAP_LAST_INFO
+};
+
+static int cap_interrupt_unset = false;
+static int cap_interrupt_level = false;
+static int cap_segstate;
+static int cap_booke_sregs;
+
+/* XXX We have a race condition where we actually have a level triggered
+ * interrupt, but the infrastructure can't expose that yet, so the guest
+ * takes but ignores it, goes to sleep and never gets notified that there's
+ * still an interrupt pending.
*
- * As a quick workaround, let's just wake up every 500 ms. That way we can
- * assure that we're always reinjecting interrupts in time.
+ * As a quick workaround, let's just wake up again 20 ms after we injected
+ * an interrupt. That way we can assure that we're always reinjecting
+ * interrupts in case the guest swallowed them.
*/
static QEMUTimer *idle_timer;
-static void do_nothing(void *opaque)
+static void kvm_kick_env(void *env)
{
- qemu_mod_timer(idle_timer, qemu_get_clock(vm_clock) +
- (get_ticks_per_sec() / 2));
+ qemu_cpu_kick(env);
}
-int kvm_arch_init(KVMState *s, int smp_cpus)
+int kvm_arch_init(KVMState *s)
{
+ cap_interrupt_unset = kvm_check_extension(s, KVM_CAP_PPC_UNSET_IRQ);
+ cap_interrupt_level = kvm_check_extension(s, KVM_CAP_PPC_IRQ_LEVEL);
+ cap_segstate = kvm_check_extension(s, KVM_CAP_PPC_SEGSTATE);
+ cap_booke_sregs = kvm_check_extension(s, KVM_CAP_PPC_BOOKE_SREGS);
+
+ if (!cap_interrupt_level) {
+ fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
+ "VM to stall at times!\n");
+ }
+
return 0;
}
-int kvm_arch_init_vcpu(CPUState *cenv)
+static int kvm_arch_sync_sregs(CPUState *cenv)
{
- int ret = 0;
struct kvm_sregs sregs;
+ int ret;
+
+ if (cenv->excp_model == POWERPC_EXCP_BOOKE) {
+ /* What we're really trying to say is "if we're on BookE, we use
+ the native PVR for now". This is the only sane way to check
+ it though, so we potentially confuse users that they can run
+ BookE guests on BookS. Let's hope nobody dares enough :) */
+ return 0;
+ } else {
+ if (!cap_segstate) {
+ fprintf(stderr, "kvm error: missing PVR setting capability\n");
+ return -ENOSYS;
+ }
+ }
+
+ ret = kvm_vcpu_ioctl(cenv, KVM_GET_SREGS, &sregs);
+ if (ret) {
+ return ret;
+ }
sregs.pvr = cenv->spr[SPR_PVR];
- ret = kvm_vcpu_ioctl(cenv, KVM_SET_SREGS, &sregs);
+ return kvm_vcpu_ioctl(cenv, KVM_SET_SREGS, &sregs);
+}
+
+int kvm_arch_init_vcpu(CPUState *cenv)
+{
+ int ret;
+
+ ret = kvm_arch_sync_sregs(cenv);
+ if (ret) {
+ return ret;
+ }
+
+ idle_timer = qemu_new_timer_ns(vm_clock, kvm_kick_env, cenv);
return ret;
}
regs.sprg6 = env->spr[SPR_SPRG6];
regs.sprg7 = env->spr[SPR_SPRG7];
+ regs.pid = env->spr[SPR_BOOKE_PID];
+
for (i = 0;i < 32; i++)
regs.gpr[i] = env->gpr[i];
{
struct kvm_regs regs;
struct kvm_sregs sregs;
- uint32_t i, ret;
+ uint32_t cr;
+ int i, ret;
ret = kvm_vcpu_ioctl(env, KVM_GET_REGS, ®s);
if (ret < 0)
return ret;
- ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs);
- if (ret < 0)
- return ret;
+ cr = regs.cr;
+ for (i = 7; i >= 0; i--) {
+ env->crf[i] = cr & 15;
+ cr >>= 4;
+ }
env->ctr = regs.ctr;
env->lr = regs.lr;
env->spr[SPR_SPRG6] = regs.sprg6;
env->spr[SPR_SPRG7] = regs.sprg7;
+ env->spr[SPR_BOOKE_PID] = regs.pid;
+
for (i = 0;i < 32; i++)
env->gpr[i] = regs.gpr[i];
-#ifdef KVM_CAP_PPC_SEGSTATE
- if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_SEGSTATE)) {
- env->sdr1 = sregs.u.s.sdr1;
+ if (cap_booke_sregs) {
+ ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_BASE) {
+ env->spr[SPR_BOOKE_CSRR0] = sregs.u.e.csrr0;
+ env->spr[SPR_BOOKE_CSRR1] = sregs.u.e.csrr1;
+ env->spr[SPR_BOOKE_ESR] = sregs.u.e.esr;
+ env->spr[SPR_BOOKE_DEAR] = sregs.u.e.dear;
+ env->spr[SPR_BOOKE_MCSR] = sregs.u.e.mcsr;
+ env->spr[SPR_BOOKE_TSR] = sregs.u.e.tsr;
+ env->spr[SPR_BOOKE_TCR] = sregs.u.e.tcr;
+ env->spr[SPR_DECR] = sregs.u.e.dec;
+ env->spr[SPR_TBL] = sregs.u.e.tb & 0xffffffff;
+ env->spr[SPR_TBU] = sregs.u.e.tb >> 32;
+ env->spr[SPR_VRSAVE] = sregs.u.e.vrsave;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_ARCH206) {
+ env->spr[SPR_BOOKE_PIR] = sregs.u.e.pir;
+ env->spr[SPR_BOOKE_MCSRR0] = sregs.u.e.mcsrr0;
+ env->spr[SPR_BOOKE_MCSRR1] = sregs.u.e.mcsrr1;
+ env->spr[SPR_BOOKE_DECAR] = sregs.u.e.decar;
+ env->spr[SPR_BOOKE_IVPR] = sregs.u.e.ivpr;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_64) {
+ env->spr[SPR_BOOKE_EPCR] = sregs.u.e.epcr;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_SPRG8) {
+ env->spr[SPR_BOOKE_SPRG8] = sregs.u.e.sprg8;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_IVOR) {
+ env->spr[SPR_BOOKE_IVOR0] = sregs.u.e.ivor_low[0];
+ env->spr[SPR_BOOKE_IVOR1] = sregs.u.e.ivor_low[1];
+ env->spr[SPR_BOOKE_IVOR2] = sregs.u.e.ivor_low[2];
+ env->spr[SPR_BOOKE_IVOR3] = sregs.u.e.ivor_low[3];
+ env->spr[SPR_BOOKE_IVOR4] = sregs.u.e.ivor_low[4];
+ env->spr[SPR_BOOKE_IVOR5] = sregs.u.e.ivor_low[5];
+ env->spr[SPR_BOOKE_IVOR6] = sregs.u.e.ivor_low[6];
+ env->spr[SPR_BOOKE_IVOR7] = sregs.u.e.ivor_low[7];
+ env->spr[SPR_BOOKE_IVOR8] = sregs.u.e.ivor_low[8];
+ env->spr[SPR_BOOKE_IVOR9] = sregs.u.e.ivor_low[9];
+ env->spr[SPR_BOOKE_IVOR10] = sregs.u.e.ivor_low[10];
+ env->spr[SPR_BOOKE_IVOR11] = sregs.u.e.ivor_low[11];
+ env->spr[SPR_BOOKE_IVOR12] = sregs.u.e.ivor_low[12];
+ env->spr[SPR_BOOKE_IVOR13] = sregs.u.e.ivor_low[13];
+ env->spr[SPR_BOOKE_IVOR14] = sregs.u.e.ivor_low[14];
+ env->spr[SPR_BOOKE_IVOR15] = sregs.u.e.ivor_low[15];
+
+ if (sregs.u.e.features & KVM_SREGS_E_SPE) {
+ env->spr[SPR_BOOKE_IVOR32] = sregs.u.e.ivor_high[0];
+ env->spr[SPR_BOOKE_IVOR33] = sregs.u.e.ivor_high[1];
+ env->spr[SPR_BOOKE_IVOR34] = sregs.u.e.ivor_high[2];
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_PM) {
+ env->spr[SPR_BOOKE_IVOR35] = sregs.u.e.ivor_high[3];
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_PC) {
+ env->spr[SPR_BOOKE_IVOR36] = sregs.u.e.ivor_high[4];
+ env->spr[SPR_BOOKE_IVOR37] = sregs.u.e.ivor_high[5];
+ }
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_ARCH206_MMU) {
+ env->spr[SPR_BOOKE_MAS0] = sregs.u.e.mas0;
+ env->spr[SPR_BOOKE_MAS1] = sregs.u.e.mas1;
+ env->spr[SPR_BOOKE_MAS2] = sregs.u.e.mas2;
+ env->spr[SPR_BOOKE_MAS3] = sregs.u.e.mas7_3 & 0xffffffff;
+ env->spr[SPR_BOOKE_MAS4] = sregs.u.e.mas4;
+ env->spr[SPR_BOOKE_MAS6] = sregs.u.e.mas6;
+ env->spr[SPR_BOOKE_MAS7] = sregs.u.e.mas7_3 >> 32;
+ env->spr[SPR_MMUCFG] = sregs.u.e.mmucfg;
+ env->spr[SPR_BOOKE_TLB0CFG] = sregs.u.e.tlbcfg[0];
+ env->spr[SPR_BOOKE_TLB1CFG] = sregs.u.e.tlbcfg[1];
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_EXP) {
+ env->spr[SPR_BOOKE_EPR] = sregs.u.e.epr;
+ }
+
+ if (sregs.u.e.features & KVM_SREGS_E_PD) {
+ env->spr[SPR_BOOKE_EPLC] = sregs.u.e.eplc;
+ env->spr[SPR_BOOKE_EPSC] = sregs.u.e.epsc;
+ }
+
+ if (sregs.u.e.impl_id == KVM_SREGS_E_IMPL_FSL) {
+ env->spr[SPR_E500_SVR] = sregs.u.e.impl.fsl.svr;
+ env->spr[SPR_Exxx_MCAR] = sregs.u.e.impl.fsl.mcar;
+ env->spr[SPR_HID0] = sregs.u.e.impl.fsl.hid0;
+
+ if (sregs.u.e.impl.fsl.features & KVM_SREGS_E_FSL_PIDn) {
+ env->spr[SPR_BOOKE_PID1] = sregs.u.e.impl.fsl.pid1;
+ env->spr[SPR_BOOKE_PID2] = sregs.u.e.impl.fsl.pid2;
+ }
+ }
+ }
+
+ if (cap_segstate) {
+ ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs);
+ if (ret < 0) {
+ return ret;
+ }
+
+ ppc_store_sdr1(env, sregs.u.s.sdr1);
/* Sync SLB */
#ifdef TARGET_PPC64
env->IBAT[1][i] = sregs.u.s.ppc32.ibat[i] >> 32;
}
}
-#endif
+
+ return 0;
+}
+
+int kvmppc_set_interrupt(CPUState *env, int irq, int level)
+{
+ unsigned virq = level ? KVM_INTERRUPT_SET_LEVEL : KVM_INTERRUPT_UNSET;
+
+ if (irq != PPC_INTERRUPT_EXT) {
+ return 0;
+ }
+
+ if (!kvm_enabled() || !cap_interrupt_unset || !cap_interrupt_level) {
+ return 0;
+ }
+
+ kvm_vcpu_ioctl(env, KVM_INTERRUPT, &virq);
return 0;
}
#define PPC_INPUT_INT PPC6xx_INPUT_INT
#endif
-int kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
+void kvm_arch_pre_run(CPUState *env, struct kvm_run *run)
{
int r;
unsigned irq;
- if (!idle_timer) {
- idle_timer = qemu_new_timer(vm_clock, do_nothing, NULL);
- qemu_mod_timer(idle_timer, qemu_get_clock(vm_clock) +
- (get_ticks_per_sec() / 2));
- }
-
/* PowerPC Qemu tracks the various core input pins (interrupt, critical
* interrupt, reset, etc) in PPC-specific env->irq_input_state. */
- if (run->ready_for_interrupt_injection &&
+ if (!cap_interrupt_level &&
+ run->ready_for_interrupt_injection &&
(env->interrupt_request & CPU_INTERRUPT_HARD) &&
(env->irq_input_state & (1<<PPC_INPUT_INT)))
{
* future KVM could cache it in-kernel to avoid a heavyweight exit
* when reading the UIC.
*/
- irq = -1U;
+ irq = KVM_INTERRUPT_SET;
dprintf("injected interrupt %d\n", irq);
r = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &irq);
if (r < 0)
printf("cpu %d fail inject %x\n", env->cpu_index, irq);
+
+ /* Always wake up soon in case the interrupt was level based */
+ qemu_mod_timer(idle_timer, qemu_get_clock_ns(vm_clock) +
+ (get_ticks_per_sec() / 50));
}
/* We don't know if there are more interrupts pending after this. However,
* the guest will return to userspace in the course of handling this one
* anyways, so we will get a chance to deliver the rest. */
- return 0;
}
-int kvm_arch_post_run(CPUState *env, struct kvm_run *run)
+void kvm_arch_post_run(CPUState *env, struct kvm_run *run)
{
- return 0;
}
-int kvm_arch_process_irqchip_events(CPUState *env)
+int kvm_arch_process_async_events(CPUState *env)
{
return 0;
}
env->exception_index = EXCP_HLT;
}
- return 1;
+ return 0;
}
/* map dcr access to existing qemu dcr emulation */
if (ppc_dcr_read(env->dcr_env, dcrn, data) < 0)
fprintf(stderr, "Read to unhandled DCR (0x%x)\n", dcrn);
- return 1;
+ return 0;
}
static int kvmppc_handle_dcr_write(CPUState *env, uint32_t dcrn, uint32_t data)
if (ppc_dcr_write(env->dcr_env, dcrn, data) < 0)
fprintf(stderr, "Write to unhandled DCR (0x%x)\n", dcrn);
- return 1;
+ return 0;
}
int kvm_arch_handle_exit(CPUState *env, struct kvm_run *run)
{
- int ret = 0;
+ int ret;
switch (run->exit_reason) {
case KVM_EXIT_DCR:
dprintf("handle halt\n");
ret = kvmppc_handle_halt(env);
break;
+ default:
+ fprintf(stderr, "KVM: unknown exit reason %d\n", run->exit_reason);
+ ret = -1;
+ break;
}
return ret;
return retval;
}
+int kvmppc_get_hypercall(CPUState *env, uint8_t *buf, int buf_len)
+{
+ uint32_t *hc = (uint32_t*)buf;
+
+ struct kvm_ppc_pvinfo pvinfo;
+
+ if (kvm_check_extension(env->kvm_state, KVM_CAP_PPC_GET_PVINFO) &&
+ !kvm_vm_ioctl(env->kvm_state, KVM_PPC_GET_PVINFO, &pvinfo)) {
+ memcpy(buf, pvinfo.hcall, buf_len);
+
+ return 0;
+ }
+
+ /*
+ * Fallback to always fail hypercalls:
+ *
+ * li r3, -1
+ * nop
+ * nop
+ * nop
+ */
+
+ hc[0] = 0x3860ffff;
+ hc[1] = 0x60000000;
+ hc[2] = 0x60000000;
+ hc[3] = 0x60000000;
+
+ return 0;
+}
+
bool kvm_arch_stop_on_emulation_error(CPUState *env)
{
return true;
}
+
+int kvm_arch_on_sigbus_vcpu(CPUState *env, int code, void *addr)
+{
+ return 1;
+}
+
+int kvm_arch_on_sigbus(int code, void *addr)
+{
+ return 1;
+}
projects / qemu.git / blobdiff