Add Control-Program Identification data to the QEMU Object
Model (QOM), along with the timestamp in which the data was received.
Example:
virsh # qemu-monitor-command vm --pretty '{
"execute": "qom-get",
"arguments": {
"path": "/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property": "control-program-id" }}'
{
"return": {
"timestamp": 1742390410685762000,
"system-level": 74872343805430528,
"sysplex-name": "PLEX ",
"system-name": "TESTVM ",
"system-type": "LINUX "
},
"id": "libvirt-15"
}
Signed-off-by: Shalini Chellathurai Saroja <[email protected]>
---
hw/s390x/sclpcpi.c | 38 ++++++++++++++++++++
include/hw/s390x/event-facility.h | 9 +++++
qapi/machine.json | 58 +++++++++++++++++++++++++++++++
3 files changed, 105 insertions(+)
diff --git a/hw/s390x/sclpcpi.c b/hw/s390x/sclpcpi.c
index 7ace5dd64e..969c15e43d 100644
--- a/hw/s390x/sclpcpi.c
+++ b/hw/s390x/sclpcpi.c
@@ -57,8 +57,11 @@
*/
#include "qemu/osdep.h"
+#include "qemu/timer.h"
#include "hw/s390x/sclp.h"
#include "hw/s390x/event-facility.h"
+#include "hw/s390x/ebcdic.h"
+#include "qapi/qapi-visit-machine.h"
typedef struct Data {
uint8_t id_format;
@@ -99,10 +102,37 @@ static int write_event_data(SCLPEvent *event,
EventBufferHeader *evt_buf_hdr)
ControlProgramIdMsg *cpim = container_of(evt_buf_hdr, ControlProgramIdMsg,
ebh);
+ ascii_put(event->cpi.system_type, (char *)cpim->data.system_type, 8);
+ ascii_put(event->cpi.system_name, (char *)cpim->data.system_name, 8);
+ ascii_put(event->cpi.sysplex_name, (char *)cpim->data.sysplex_name, 8);
+ event->cpi.system_level = ldq_be_p(&cpim->data.system_level);
+ event->cpi.timestamp = qemu_clock_get_ns(QEMU_CLOCK_HOST);
+
cpim->ebh.flags = SCLP_EVENT_BUFFER_ACCEPTED;
return SCLP_RC_NORMAL_COMPLETION;
}
+static void get_control_program_id(Object *obj, Visitor *v,
+ const char *name, void *opaque,
+ Error **errp)
+{
+ SCLPEvent *event = (SCLPEvent *)(obj);
+ S390ControlProgramId *cpi;
+
+ cpi = &(S390ControlProgramId){
+ .system_type = g_strndup((char *) event->cpi.system_type,
+ sizeof(event->cpi.system_type)),
+ .system_name = g_strndup((char *) event->cpi.system_name,
+ sizeof(event->cpi.system_name)),
+ .system_level = event->cpi.system_level,
+ .sysplex_name = g_strndup((char *) event->cpi.sysplex_name,
+ sizeof(event->cpi.sysplex_name)),
+ .timestamp = event->cpi.timestamp
+ };
+
+ visit_type_S390ControlProgramId(v, name, &cpi, errp);
+}
+
static void cpi_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@@ -114,6 +144,14 @@ static void cpi_class_init(ObjectClass *klass, void *data)
k->get_send_mask = send_mask;
k->get_receive_mask = receive_mask;
k->write_event_data = write_event_data;
+
+ object_class_property_add(klass, "control-program-id",
+ "S390ControlProgramId",
+ get_control_program_id,
+ NULL, NULL, NULL);
+ object_class_property_set_description(klass, "control-program-id",
+ "Control-program identifiers provide data about the guest "
+ "operating system");
}
static const TypeInfo sclp_cpi_info = {
diff --git a/include/hw/s390x/event-facility.h
b/include/hw/s390x/event-facility.h
index f445d2f9f5..39e589ed44 100644
--- a/include/hw/s390x/event-facility.h
+++ b/include/hw/s390x/event-facility.h
@@ -169,10 +169,19 @@ typedef struct ReadEventData {
};
} QEMU_PACKED ReadEventData;
+typedef struct ControlProgramId {
+ uint8_t system_type[8];
+ uint8_t system_name[8];
+ uint64_t system_level;
+ uint8_t sysplex_name[8];
+ uint64_t timestamp;
+} QEMU_PACKED ControlProgramId;
+
struct SCLPEvent {
DeviceState qdev;
bool event_pending;
char *name;
+ ControlProgramId cpi;
};
struct SCLPEventClass {
diff --git a/qapi/machine.json b/qapi/machine.json
index a6b8795b09..cd2bcd2d13 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -1898,3 +1898,61 @@
{ 'command': 'x-query-interrupt-controllers',
'returns': 'HumanReadableText',
'features': [ 'unstable' ]}
+
+##
+# @S390ControlProgramId:
+#
+# Control-program identifiers provide data about the guest operating system.
+# The control-program identifiers are: system type, system name, system level
+# and sysplex name.
+#
+# In Linux, all the control-program identifiers are user configurable. The
+# system type, system name, and sysplex name use EBCDIC characters from
+# this set: capital A-Z, 0-9, $, @, #, and blank. In Linux, the system type,
+# system name and sysplex name are arbitrary free-form texts.
+#
+# In Linux, the 8-byte hexadecimal system-level has the format
+# 0x<a><b><cc><dd><eeee><ff><gg><hh>, where:
+# <a>: is one hexadecimal byte, its most significant bit indicates hypervisor
+# use
+# <b>: is one digit that represents Linux distributions as follows
+# 0: generic Linux
+# 1: Red Hat Enterprise Linux
+# 2: SUSE Linux Enterprise Server
+# 3: Canonical Ubuntu
+# 4: Fedora
+# 5: openSUSE Leap
+# 6: Debian GNU/Linux
+# 7: Red Hat Enterprise Linux CoreOS
+# <cc>: are two digits for a distribution-specific encoding of the major
version
+# of the distribution
+# <dd>: are two digits for a distribution-specific encoding of the minor
version
+# of the distribution
+# <eeee>: are four digits for the patch level of the distribution
+# <ff>: are two digits for the major version of the kernel
+# <gg>: are two digits for the minor version of the kernel
+# <hh>: are two digits for the stable version of the kernel
+# (e.g. 74872343805430528, when converted to hex is 0x010a000000060b00). On
+# machines prior to z16, some of the values are not available to display.
+#
+# Sysplex refers to a cluster of logical partitions that communicates and
+# co-operates with each other.
+#
+# @system-type: operating system (e.g. "LINUX ")
+#
+# @system-name: user configurable name of the VM (e.g. "TESTVM ")
+#
+# @system-level: distribution and kernel version in Linux
+#
+# @sysplex-name: sysplex which the VM belongs to, if any (e.g. "PLEX ")
+#
+# @timestamp: latest update of CPI data in nanoseconds since the UNIX EPOCH
+#
+# Since: 10.0
+##
+{ 'struct': 'S390ControlProgramId', 'data': {
+ 'system-type': 'str',
+ 'system-name': 'str',
+ 'system-level': 'uint64',
+ 'sysplex-name': 'str',
+ 'timestamp': 'uint64' } }
--
2.47.0
