@@ -74,11 +74,17 @@ static const VMStateDescription vmstate_pcibus = {
}
};
+void pci_bus_add_reset_notifier(PCIBus *bus, Notifier *notify)
+{
+ notifier_list_add(&bus->reset_notifiers, notify);
+}
+
static void pci_bus_realize(BusState *qbus, Error **errp)
{
PCIBus *bus = PCI_BUS(qbus);
vmstate_register(NULL, -1, &vmstate_pcibus, bus);
+ notifier_list_init(&bus->reset_notifiers);
}
static void pci_bus_unrealize(BusState *qbus, Error **errp)
@@ -267,6 +267,9 @@ void pci_bridge_write_config(PCIDevice *d,
newctl = pci_get_word(d->config + PCI_BRIDGE_CONTROL);
if (~oldctl & newctl & PCI_BRIDGE_CTL_BUS_RESET) {
+ /* do host secondary bus reset for passthrough devices */
+ notifier_list_notify(&s->sec_bus.reset_notifiers, NULL);
+
/* Trigger hot reset on 0->1 transition. */
qbus_reset_all(&s->sec_bus.qbus);
}
@@ -7,6 +7,7 @@
#include "exec/memory.h"
#include "sysemu/dma.h"
#include "qapi/error.h"
+#include "qemu/notify.h"
/* PCI includes legacy ISA access. */
#include "hw/isa/isa.h"
@@ -370,6 +371,7 @@ void pci_bus_fire_intx_routing_notifier(PCIBus *bus);
void pci_device_set_intx_routing_notifier(PCIDevice *dev,
PCIINTxRoutingNotifier notifier);
void pci_device_reset(PCIDevice *dev);
+void pci_bus_add_reset_notifier(PCIBus *bus, Notifier *notify);
PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
const char *default_model,
@@ -29,6 +29,8 @@ struct PCIBus {
Keep a count of the number of devices with raised IRQs. */
int nirq;
int *irq_count;
+
+ NotifierList reset_notifiers;
};
typedef struct PCIBridgeWindows PCIBridgeWindows;
when recovery AER, we always need to reset the host bus to recovery the devices under the bus, so add pci bus callbacks to reset host bus when vfio support AER. Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> --- hw/pci/pci.c | 6 ++++++ hw/pci/pci_bridge.c | 3 +++ include/hw/pci/pci.h | 2 ++ include/hw/pci/pci_bus.h | 2 ++ 4 files changed, 13 insertions(+)