#include "trace.h"
#include "sysemu/kvm.h"
#include "hw/ppc/spapr.h"
+#include "hw/ppc/spapr_cpu_core.h"
#include "hw/ppc/xics.h"
+#include "hw/ppc/xics_spapr.h"
#include "kvm_ppc.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
static QLIST_HEAD(, KVMEnabledICP)
kvm_enabled_icps = QLIST_HEAD_INITIALIZER(&kvm_enabled_icps);
+static void kvm_disable_icps(void)
+{
+ KVMEnabledICP *enabled_icp, *next;
+
+ QLIST_FOREACH_SAFE(enabled_icp, &kvm_enabled_icps, node, next) {
+ QLIST_REMOVE(enabled_icp, node);
+ g_free(enabled_icp);
+ }
+}
+
/*
* ICP-KVM
*/
-static void icp_get_kvm_state(ICPState *icp)
+void icp_get_kvm_state(ICPState *icp)
{
uint64_t state;
int ret;
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return;
+ }
+
/* ICP for this CPU thread is not in use, exiting */
if (!icp->cs) {
return;
icp_get_kvm_state(arg.host_ptr);
}
-static void icp_synchronize_state(ICPState *icp)
+void icp_synchronize_state(ICPState *icp)
{
if (icp->cs) {
run_on_cpu(icp->cs, do_icp_synchronize_state, RUN_ON_CPU_HOST_PTR(icp));
}
}
-static int icp_set_kvm_state(ICPState *icp, int version_id)
+int icp_set_kvm_state(ICPState *icp)
{
uint64_t state;
int ret;
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return 0;
+ }
+
/* ICP for this CPU thread is not in use, exiting */
if (!icp->cs) {
return 0;
return 0;
}
-static void icp_kvm_reset(DeviceState *dev)
-{
- ICPStateClass *icpc = ICP_GET_CLASS(dev);
-
- icpc->parent_reset(dev);
-
- icp_set_kvm_state(ICP(dev), 1);
-}
-
-static void icp_kvm_realize(DeviceState *dev, Error **errp)
+void icp_kvm_realize(DeviceState *dev, Error **errp)
{
ICPState *icp = ICP(dev);
- ICPStateClass *icpc = ICP_GET_CLASS(icp);
- Error *local_err = NULL;
CPUState *cs;
KVMEnabledICP *enabled_icp;
unsigned long vcpu_id;
int ret;
+ /* The KVM XICS device is not in use */
if (kernel_xics_fd == -1) {
- abort();
- }
-
- icpc->parent_realize(dev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
return;
}
QLIST_INSERT_HEAD(&kvm_enabled_icps, enabled_icp, node);
}
-static void icp_kvm_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- ICPStateClass *icpc = ICP_CLASS(klass);
-
- device_class_set_parent_realize(dc, icp_kvm_realize,
- &icpc->parent_realize);
- device_class_set_parent_reset(dc, icp_kvm_reset,
- &icpc->parent_reset);
-
- icpc->pre_save = icp_get_kvm_state;
- icpc->post_load = icp_set_kvm_state;
- icpc->synchronize_state = icp_synchronize_state;
-}
-
-static const TypeInfo icp_kvm_info = {
- .name = TYPE_KVM_ICP,
- .parent = TYPE_ICP,
- .instance_size = sizeof(ICPState),
- .class_init = icp_kvm_class_init,
- .class_size = sizeof(ICPStateClass),
-};
-
/*
* ICS-KVM
*/
-static void ics_get_kvm_state(ICSState *ics)
+void ics_get_kvm_state(ICSState *ics)
{
uint64_t state;
int i;
- Error *local_err = NULL;
+
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return;
+ }
for (i = 0; i < ics->nr_irqs; i++) {
ICSIRQState *irq = &ics->irqs[i];
kvm_device_access(kernel_xics_fd, KVM_DEV_XICS_GRP_SOURCES,
- i + ics->offset, &state, false, &local_err);
- if (local_err) {
- error_report_err(local_err);
- exit(1);
- }
+ i + ics->offset, &state, false, &error_fatal);
irq->server = state & KVM_XICS_DESTINATION_MASK;
irq->saved_priority = (state >> KVM_XICS_PRIORITY_SHIFT)
}
}
-static void ics_synchronize_state(ICSState *ics)
+void ics_synchronize_state(ICSState *ics)
{
ics_get_kvm_state(ics);
}
-static int ics_set_kvm_state(ICSState *ics, int version_id)
+int ics_set_kvm_state_one(ICSState *ics, int srcno)
{
uint64_t state;
- int i;
Error *local_err = NULL;
+ ICSIRQState *irq = &ics->irqs[srcno];
+ int ret;
- for (i = 0; i < ics->nr_irqs; i++) {
- ICSIRQState *irq = &ics->irqs[i];
- int ret;
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return 0;
+ }
- state = irq->server;
- state |= (uint64_t)(irq->saved_priority & KVM_XICS_PRIORITY_MASK)
- << KVM_XICS_PRIORITY_SHIFT;
- if (irq->priority != irq->saved_priority) {
- assert(irq->priority == 0xff);
- state |= KVM_XICS_MASKED;
- }
+ state = irq->server;
+ state |= (uint64_t)(irq->saved_priority & KVM_XICS_PRIORITY_MASK)
+ << KVM_XICS_PRIORITY_SHIFT;
+ if (irq->priority != irq->saved_priority) {
+ assert(irq->priority == 0xff);
+ state |= KVM_XICS_MASKED;
+ }
- if (ics->irqs[i].flags & XICS_FLAGS_IRQ_LSI) {
- state |= KVM_XICS_LEVEL_SENSITIVE;
- if (irq->status & XICS_STATUS_ASSERTED) {
- state |= KVM_XICS_PENDING;
- }
- } else {
- if (irq->status & XICS_STATUS_MASKED_PENDING) {
- state |= KVM_XICS_PENDING;
- }
- }
- if (irq->status & XICS_STATUS_PRESENTED) {
- state |= KVM_XICS_PRESENTED;
+ if (irq->flags & XICS_FLAGS_IRQ_LSI) {
+ state |= KVM_XICS_LEVEL_SENSITIVE;
+ if (irq->status & XICS_STATUS_ASSERTED) {
+ state |= KVM_XICS_PENDING;
}
- if (irq->status & XICS_STATUS_QUEUED) {
- state |= KVM_XICS_QUEUED;
+ } else {
+ if (irq->status & XICS_STATUS_MASKED_PENDING) {
+ state |= KVM_XICS_PENDING;
}
+ }
+ if (irq->status & XICS_STATUS_PRESENTED) {
+ state |= KVM_XICS_PRESENTED;
+ }
+ if (irq->status & XICS_STATUS_QUEUED) {
+ state |= KVM_XICS_QUEUED;
+ }
- ret = kvm_device_access(kernel_xics_fd, KVM_DEV_XICS_GRP_SOURCES,
- i + ics->offset, &state, true, &local_err);
- if (local_err) {
- error_report_err(local_err);
+ ret = kvm_device_access(kernel_xics_fd, KVM_DEV_XICS_GRP_SOURCES,
+ srcno + ics->offset, &state, true, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ return ret;
+ }
+
+ return 0;
+}
+
+int ics_set_kvm_state(ICSState *ics)
+{
+ int i;
+
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return 0;
+ }
+
+ for (i = 0; i < ics->nr_irqs; i++) {
+ int ret;
+
+ ret = ics_set_kvm_state_one(ics, i);
+ if (ret) {
return ret;
}
}
return 0;
}
-static void ics_kvm_set_irq(void *opaque, int srcno, int val)
+void ics_kvm_set_irq(ICSState *ics, int srcno, int val)
{
- ICSState *ics = opaque;
struct kvm_irq_level args;
int rc;
+ /* The KVM XICS device should be in use */
+ assert(kernel_xics_fd != -1);
+
args.irq = srcno + ics->offset;
if (ics->irqs[srcno].flags & XICS_FLAGS_IRQ_MSI) {
if (!val) {
}
}
-static void ics_kvm_reset(void *dev)
-{
- ICSState *ics = ICS_SIMPLE(dev);
- int i;
- uint8_t flags[ics->nr_irqs];
-
- for (i = 0; i < ics->nr_irqs; i++) {
- flags[i] = ics->irqs[i].flags;
- }
-
- memset(ics->irqs, 0, sizeof(ICSIRQState) * ics->nr_irqs);
-
- for (i = 0; i < ics->nr_irqs; i++) {
- ics->irqs[i].priority = 0xff;
- ics->irqs[i].saved_priority = 0xff;
- ics->irqs[i].flags = flags[i];
- }
-
- ics_set_kvm_state(ics, 1);
-}
-
-static void ics_kvm_realize(DeviceState *dev, Error **errp)
-{
- ICSState *ics = ICS_KVM(dev);
- ICSStateClass *icsc = ICS_BASE_GET_CLASS(ics);
- Error *local_err = NULL;
-
- icsc->parent_realize(dev, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- return;
- }
- ics->qirqs = qemu_allocate_irqs(ics_kvm_set_irq, ics, ics->nr_irqs);
-
- qemu_register_reset(ics_kvm_reset, ics);
-}
-
-static void ics_kvm_class_init(ObjectClass *klass, void *data)
-{
- ICSStateClass *icsc = ICS_BASE_CLASS(klass);
- DeviceClass *dc = DEVICE_CLASS(klass);
-
- /*
- * Use device_class_set_parent_realize() when ics-kvm inherits
- * directly from ics-base and not from ics-simple anymore.
- */
- dc->realize = ics_kvm_realize;
-
- icsc->pre_save = ics_get_kvm_state;
- icsc->post_load = ics_set_kvm_state;
- icsc->synchronize_state = ics_synchronize_state;
-}
-
-static const TypeInfo ics_kvm_info = {
- .name = TYPE_ICS_KVM,
- .parent = TYPE_ICS_SIMPLE,
- .instance_size = sizeof(ICSState),
- .class_init = ics_kvm_class_init,
-};
-
-/*
- * XICS-KVM
- */
-
-static void rtas_dummy(PowerPCCPU *cpu, sPAPRMachineState *spapr,
+static void rtas_dummy(PowerPCCPU *cpu, SpaprMachineState *spapr,
uint32_t token,
uint32_t nargs, target_ulong args,
uint32_t nret, target_ulong rets)
__func__);
}
-int xics_kvm_init(sPAPRMachineState *spapr, Error **errp)
+int xics_kvm_init(SpaprMachineState *spapr, Error **errp)
{
int rc;
+ CPUState *cs;
+ Error *local_err = NULL;
+
+ /*
+ * The KVM XICS device already in use. This is the case when
+ * rebooting under the XICS-only interrupt mode.
+ */
+ if (kernel_xics_fd != -1) {
+ return 0;
+ }
if (!kvm_enabled() || !kvm_check_extension(kvm_state, KVM_CAP_IRQ_XICS)) {
error_setg(errp,
kvm_msi_via_irqfd_allowed = true;
kvm_gsi_direct_mapping = true;
+ /* Create the presenters */
+ CPU_FOREACH(cs) {
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+
+ icp_kvm_realize(DEVICE(spapr_cpu_state(cpu)->icp), &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ goto fail;
+ }
+ }
+
+ /* Update the KVM sources */
+ ics_set_kvm_state(spapr->ics);
+
+ /* Connect the presenters to the initial VCPUs of the machine */
+ CPU_FOREACH(cs) {
+ PowerPCCPU *cpu = POWERPC_CPU(cs);
+ icp_set_kvm_state(spapr_cpu_state(cpu)->icp);
+ }
+
return 0;
fail:
return -1;
}
-static void xics_kvm_register_types(void)
+void xics_kvm_disconnect(SpaprMachineState *spapr, Error **errp)
{
- type_register_static(&ics_kvm_info);
- type_register_static(&icp_kvm_info);
-}
+ /* The KVM XICS device is not in use */
+ if (kernel_xics_fd == -1) {
+ return;
+ }
+
+ if (!kvm_enabled() || !kvm_check_extension(kvm_state, KVM_CAP_IRQ_XICS)) {
+ error_setg(errp,
+ "KVM and IRQ_XICS capability must be present for KVM XICS device");
+ return;
+ }
+
+ /*
+ * Only on P9 using the XICS-on XIVE KVM device:
+ *
+ * When the KVM device fd is closed, the device is destroyed and
+ * removed from the list of devices of the VM. The VCPU presenters
+ * are also detached from the device.
+ */
+ close(kernel_xics_fd);
+ kernel_xics_fd = -1;
-type_init(xics_kvm_register_types)
+ spapr_rtas_unregister(RTAS_IBM_SET_XIVE);
+ spapr_rtas_unregister(RTAS_IBM_GET_XIVE);
+ spapr_rtas_unregister(RTAS_IBM_INT_OFF);
+ spapr_rtas_unregister(RTAS_IBM_INT_ON);
+
+ kvmppc_define_rtas_kernel_token(0, "ibm,set-xive");
+ kvmppc_define_rtas_kernel_token(0, "ibm,get-xive");
+ kvmppc_define_rtas_kernel_token(0, "ibm,int-on");
+ kvmppc_define_rtas_kernel_token(0, "ibm,int-off");
+
+ kvm_kernel_irqchip = false;
+ kvm_msi_via_irqfd_allowed = false;
+ kvm_gsi_direct_mapping = false;
+
+ /* Clear the presenter from the VCPUs */
+ kvm_disable_icps();
+}
projects / mirror_qemu.git / blobdiff