Provide a function that resets the I/O subsystem.
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
---
hw/s390x/s390-virtio-ccw.c | 15 +++++++++++++++
target-s390x/cpu.h | 1 +
2 files changed, 16 insertions(+)
diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index aebbbf1..c5cdb11 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -17,6 +17,21 @@
#include "css.h"
#include "virtio-ccw.h"
+void io_subsystem_reset(void)
+{
+ DeviceState *css, *sclp;
+
+ css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL));
+ if (css) {
+ qdev_reset_all(css);
+ }
+ sclp = DEVICE(object_resolve_path_type("",
+ "s390-sclp-event-facility", NULL));
+ if (sclp) {
+ qdev_reset_all(sclp);
+ }
+}
+
static int virtio_ccw_hcall_notify(const uint64_t *args)
{
uint64_t subch_id = args[0];
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 65bef86..1c8e2c2 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -400,6 +400,7 @@ void cpu_unlock(void);
typedef struct SubchDev SubchDev;
#ifndef CONFIG_USER_ONLY
+extern void io_subsystem_reset(void);
SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid,
uint16_t schid);
bool css_subch_visible(SubchDev *sch);
--
1.8.3.1
