kvm: extend kvm_irqchip_add_msi_route to work on s390
on s390 MSI-X irqs are presented as thin or adapter interrupts
for this we have to reorganize the routing entry to contain
valid information for the adapter interrupt code on s390.
To minimize impact on existing code we introduce an architecture
function to fixup the routing entry.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 104cf35..30cb84d 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -158,6 +158,7 @@
struct kvm_run;
struct kvm_lapic_state;
+struct kvm_irq_routing_entry;
typedef struct KVMCapabilityInfo {
const char *name;
@@ -270,6 +271,9 @@
void kvm_arch_init_irq_routing(KVMState *s);
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data);
+
int kvm_set_irq(KVMState *s, int irq, int level);
int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg);
diff --git a/kvm-all.c b/kvm-all.c
index 18cc6b4..2f21a4e 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1225,6 +1225,10 @@
kroute.u.msi.address_lo = (uint32_t)msg.address;
kroute.u.msi.address_hi = msg.address >> 32;
kroute.u.msi.data = le32_to_cpu(msg.data);
+ if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data)) {
+ kvm_irqchip_release_virq(s, virq);
+ return -EINVAL;
+ }
kvm_add_routing_entry(s, &kroute);
kvm_irqchip_commit_routes(s);
@@ -1250,6 +1254,9 @@
kroute.u.msi.address_lo = (uint32_t)msg.address;
kroute.u.msi.address_hi = msg.address >> 32;
kroute.u.msi.data = le32_to_cpu(msg.data);
+ if (kvm_arch_fixup_msi_route(&kroute, msg.address, msg.data)) {
+ return -EINVAL;
+ }
return kvm_update_routing_entry(s, &kroute);
}
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index 4d81f3d..23cefe9 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -548,3 +548,9 @@
return 0;
}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data)
+{
+ return 0;
+}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f92edfe..54ccb89 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -2733,3 +2733,9 @@
return kvm_deassign_irq_internal(s, dev_id, KVM_DEV_IRQ_GUEST_MSIX |
KVM_DEV_IRQ_HOST_MSIX);
}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data)
+{
+ return 0;
+}
diff --git a/target-mips/kvm.c b/target-mips/kvm.c
index a761ea5..b68191c 100644
--- a/target-mips/kvm.c
+++ b/target-mips/kvm.c
@@ -688,3 +688,9 @@
return ret;
}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data)
+{
+ return 0;
+}
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 911f912..1edf2b5 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -2402,3 +2402,9 @@
error_out:
return;
}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data)
+{
+ return 0;
+}
diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 09c2483..dcd7505 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -41,6 +41,7 @@
#include "trace.h"
#include "qapi-event.h"
#include "hw/s390x/s390-pci-inst.h"
+#include "hw/s390x/s390-pci-bus.h"
/* #define DEBUG_KVM */
@@ -1544,3 +1545,28 @@
return ret;
}
+
+int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
+ uint64_t address, uint32_t data)
+{
+ S390PCIBusDevice *pbdev;
+ uint32_t fid = data >> ZPCI_MSI_VEC_BITS;
+ uint32_t vec = data & ZPCI_MSI_VEC_MASK;
+
+ pbdev = s390_pci_find_dev_by_fid(fid);
+ if (!pbdev) {
+ DPRINTF("add_msi_route no dev\n");
+ return -ENODEV;
+ }
+
+ pbdev->routes.adapter.ind_offset = vec;
+
+ route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
+ route->flags = 0;
+ route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
+ route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
+ route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
+ route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
+ route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
+ return 0;
+}
