Add Control-Program Identification (CPI) data to the QEMU Object
Model (QOM), along with the timestamp in which the data was received
as shown below.
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-list",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi"}}'
{
"return": [
[...]
{
"name": "system_level",
"type": "uint64"
},
{
"name": "system_name",
"type": "string"
},
{
"name": "system_type",
"type": "string"
},
{
"name": "timestamp",
"type": "uint64"
},
{
"name": "sysplex_name",
"type": "string"
}
],
"id": "libvirt-14"
}
Example CPI data:
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-get",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property":"system_type"}}'
{
"return": "LINUX ",
"id": "libvirt-18"
}
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-get",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property":"system_name"}}'
{
"return": "TESTVM ",
"id": "libvirt-19"
}
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-get",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property":"sysplex_name"}}'
{
"return": "PLEX ",
"id": "libvirt-20"
}
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-get",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property":"system_level"}}'
{
"return": 74872343805430528,
"id": "libvirt-21"
}
virsh # qemu-monitor-command vm --pretty '{"execute":"qom-get",
"arguments":{"path":"/machine/sclp/s390-sclp-event-facility/sclpcpi",
"property":"timestamp"}}'
{
"return": 1748866753433923000,
"id": "libvirt-22"
}
Signed-off-by: Shalini Chellathurai Saroja <shal...@linux.ibm.com>
---
hw/s390x/sclpcpi.c | 47 +++++++++++++++++++++++++
include/hw/s390x/event-facility.h | 5 +++
qapi/machine.json | 58 +++++++++++++++++++++++++++++++
3 files changed, 110 insertions(+)
diff --git a/hw/s390x/sclpcpi.c b/hw/s390x/sclpcpi.c
index 935fa87acd..ec711e2291 100644
--- a/hw/s390x/sclpcpi.c
+++ b/hw/s390x/sclpcpi.c
@@ -15,7 +15,9 @@
*/
#include "qemu/osdep.h"
+#include "qemu/timer.h"
#include "hw/s390x/event-facility.h"
+#include "hw/s390x/ebcdic.h"
typedef struct Data {
uint8_t id_format;
@@ -55,11 +57,42 @@ static int write_event_data(SCLPEvent *event,
EventBufferHeader *evt_buf_hdr)
{
ControlProgramIdMsg *cpim = container_of(evt_buf_hdr, ControlProgramIdMsg,
ebh);
+ SCLPEventCPI *e = SCLP_EVENT_CPI(event);
+
+ ascii_put(e->system_type, (char *)cpim->data.system_type,
+ sizeof(cpim->data.system_type));
+ ascii_put(e->system_name, (char *)cpim->data.system_name,
+ sizeof(cpim->data.system_name));
+ ascii_put(e->sysplex_name, (char *)cpim->data.sysplex_name,
+ sizeof(cpim->data.sysplex_name));
+ e->system_level = ldq_be_p(&cpim->data.system_level);
+ e->timestamp = qemu_clock_get_ns(QEMU_CLOCK_HOST);
cpim->ebh.flags = SCLP_EVENT_BUFFER_ACCEPTED;
return SCLP_RC_NORMAL_COMPLETION;
}
+static char *get_system_type(Object *obj, Error **errp)
+{
+ SCLPEventCPI *e = SCLP_EVENT_CPI(obj);
+
+ return g_strndup((char *) e->system_type, sizeof(e->system_type));
+}
+
+static char *get_system_name(Object *obj, Error **errp)
+{
+ SCLPEventCPI *e = SCLP_EVENT_CPI(obj);
+
+ return g_strndup((char *) e->system_name, sizeof(e->system_name));
+}
+
+static char *get_sysplex_name(Object *obj, Error **errp)
+{
+ SCLPEventCPI *e = SCLP_EVENT_CPI(obj);
+
+ return g_strndup((char *) e->sysplex_name, sizeof(e->sysplex_name));
+}
+
static void cpi_class_init(ObjectClass *klass, const void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@@ -73,10 +106,24 @@ static void cpi_class_init(ObjectClass *klass, const void
*data)
k->write_event_data = write_event_data;
}
+static void cpi_init(Object *obj)
+{
+ SCLPEventCPI *e = SCLP_EVENT_CPI(obj);
+
+ object_property_add_str(obj, "system_type", get_system_type, NULL);
+ object_property_add_str(obj, "system_name", get_system_name, NULL);
+ object_property_add_str(obj, "sysplex_name", get_sysplex_name, NULL);
+ object_property_add_uint64_ptr(obj, "system_level", &(e->system_level),
+ OBJ_PROP_FLAG_READ);
+ object_property_add_uint64_ptr(obj, "timestamp", &(e->timestamp),
+ OBJ_PROP_FLAG_READ);
+}
+
static const TypeInfo sclp_cpi_info = {
.name = TYPE_SCLP_EVENT_CPI,
.parent = TYPE_SCLP_EVENT,
.instance_size = sizeof(SCLPEventCPI),
+ .instance_init = cpi_init,
.class_init = cpi_class_init,
};
diff --git a/include/hw/s390x/event-facility.h
b/include/hw/s390x/event-facility.h
index e81bc80498..eac7a51100 100644
--- a/include/hw/s390x/event-facility.h
+++ b/include/hw/s390x/event-facility.h
@@ -201,6 +201,11 @@ OBJECT_DECLARE_TYPE(SCLPEventCPI, SCLPEventCPIClass,
struct SCLPEventCPI {
SCLPEvent event;
+ uint8_t system_type[8];
+ uint8_t system_name[8];
+ uint64_t system_level;
+ uint8_t sysplex_name[8];
+ uint64_t timestamp;
};
#define TYPE_SCLP_EVENT_FACILITY "s390-sclp-event-facility"
diff --git a/qapi/machine.json b/qapi/machine.json
index 5373e1368c..1f2db68032 100644
--- a/qapi/machine.json
+++ b/qapi/machine.json
@@ -2279,3 +2279,61 @@
# Since: 1.2
##
{ 'command': 'query-cpu-definitions', 'returns': ['CpuDefinitionInfo'] }
+
+##
+# @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: 10.1
+##
+{ 'struct': 'S390ControlProgramId', 'data': {
+ 'system-type': 'str',
+ 'system-name': 'str',
+ 'system-level': 'uint64',
+ 'sysplex-name': 'str',
+ 'timestamp': 'uint64' } }
--
2.49.0
