[PATCH libvirt v2 03/11] nodedev: detect AP queues
Shalini Chellathurai Saroja
shalini at linux.ibm.com
Thu Nov 12 12:15:11 UTC 2020
Each AP card device can support upto 256 AP queues. AP queues are
also detected by udev, so add support for libvirt nodedev driver.
Signed-off-by: Farhan Ali <alifm at linux.ibm.com>
Signed-off-by: Shalini Chellathurai Saroja <shalini at linux.ibm.com>
Reviewed-by: Bjoern Walk <bwalk at linux.ibm.com>
Reviewed-by: Boris Fiuczynski <fiuczy at linux.ibm.com>
---
docs/formatnode.html.in | 11 ++++++
docs/schemas/nodedev.rng | 25 +++++++++++++
src/conf/node_device_conf.c | 59 ++++++++++++++++++++++++++++++
src/conf/node_device_conf.h | 9 +++++
src/conf/virnodedeviceobj.c | 1 +
src/node_device/node_device_udev.c | 27 ++++++++++++++
tools/virsh-nodedev.c | 1 +
7 files changed, 133 insertions(+)
diff --git a/docs/formatnode.html.in b/docs/formatnode.html.in
index d10a79e3..45281363 100644
--- a/docs/formatnode.html.in
+++ b/docs/formatnode.html.in
@@ -439,6 +439,17 @@
<dd>AP Card identifier.</dd>
</dl>
</dd>
+ <dt><code>ap_queue</code></dt>
+ <dd>Describes the AP Queue on a S390 host. An AP Queue is
+ identified by it's ap-adapter and ap-domain id. Sub-elements include:
+ <dl>
+ <dt><code>ap-adapter</code></dt>
+ <dd>The ap-adapter of an AP Queue identifies AP Card to which
+ this queue belongs.</dd>
+ <dt><code>ap-domain</code></dt>
+ <dd>AP Queue identifier.</dd>
+ </dl>
+ </dd>
</dl>
</dd>
</dl>
diff --git a/docs/schemas/nodedev.rng b/docs/schemas/nodedev.rng
index d02e5377..51cb8854 100644
--- a/docs/schemas/nodedev.rng
+++ b/docs/schemas/nodedev.rng
@@ -88,6 +88,7 @@
<ref name="capcssdev"/>
<ref name="capvdpa"/>
<ref name="capapcard"/>
+ <ref name="capapqueue"/>
</choice>
</element>
</define>
@@ -678,6 +679,18 @@
</element>
</define>
+ <define name='capapqueue'>
+ <attribute name='type'>
+ <value>ap_queue</value>
+ </attribute>
+ <element name='ap-adapter'>
+ <ref name='apAdapterRange'/>
+ </element>
+ <element name='ap-domain'>
+ <ref name='apDomainRange'/>
+ </element>
+ </define>
+
<define name='address'>
<element name='address'>
<attribute name='domain'><ref name='hexuint'/></attribute>
@@ -738,4 +751,16 @@
</choice>
</define>
+ <define name="apDomainRange">
+ <choice>
+ <data type="string">
+ <param name="pattern">(0x)?[0-9a-fA-F]{1,4}</param>
+ </data>
+ <data type="int">
+ <param name="minInclusive">0</param>
+ <param name="maxInclusive">255</param>
+ </data>
+ </choice>
+ </define>
+
</grammar>
diff --git a/src/conf/node_device_conf.c b/src/conf/node_device_conf.c
index 5d7a23cb..fa3b823f 100644
--- a/src/conf/node_device_conf.c
+++ b/src/conf/node_device_conf.c
@@ -68,6 +68,7 @@ VIR_ENUM_IMPL(virNodeDevCap,
"css",
"vdpa",
"ap_card",
+ "ap_queue",
);
VIR_ENUM_IMPL(virNodeDevNetCap,
@@ -655,6 +656,12 @@ virNodeDeviceDefFormat(const virNodeDeviceDef *def)
virBufferAsprintf(&buf, "<ap-adapter>0x%02x</ap-adapter>\n",
data->ap_card.ap_adapter);
break;
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
+ virBufferAsprintf(&buf, "<ap-adapter>0x%02x</ap-adapter>\n",
+ data->ap_queue.ap_adapter);
+ virBufferAsprintf(&buf, "<ap-domain>0x%04x</ap-domain>\n",
+ data->ap_queue.ap_domain);
+ break;
case VIR_NODE_DEV_CAP_MDEV_TYPES:
case VIR_NODE_DEV_CAP_FC_HOST:
case VIR_NODE_DEV_CAP_VPORTS:
@@ -976,6 +983,52 @@ virNodeDevCapAPCardParseXML(xmlXPathContextPtr ctxt,
}
+static int
+virNodeDevCapAPQueueParseXML(xmlXPathContextPtr ctxt,
+ virNodeDeviceDefPtr def,
+ xmlNodePtr node,
+ virNodeDevCapAPQueuePtr ap_queue)
+{
+ xmlNodePtr orig;
+ int ret = -1;
+ g_autofree char *adapter = NULL, *dom = NULL;
+
+ orig = ctxt->node;
+ ctxt->node = node;
+
+ if (!(adapter = virXPathString("string(./ap-adapter[1])", ctxt))) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("missing ap-adapter value for '%s'"), def->name);
+ return -1;
+ }
+
+ if (virStrToLong_uip(adapter, NULL, 0, &ap_queue->ap_adapter) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("invalid ap-adapter value '%s' for '%s'"),
+ adapter, def->name);
+ goto out;
+ }
+
+ if (!(dom = virXPathString("string(./ap-domain[1])", ctxt))) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("missing ap-domain value for '%s'"), def->name);
+ goto out;
+ }
+
+ if (virStrToLong_uip(dom, NULL, 0, &ap_queue->ap_domain) < 0) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("invalid ap-domain value '%s' for '%s'"),
+ dom, def->name);
+ goto out;
+ }
+
+ ret = 0;
+ out:
+ ctxt->node = orig;
+ return ret;
+}
+
+
static int
virNodeDevCapStorageParseXML(xmlXPathContextPtr ctxt,
virNodeDeviceDefPtr def,
@@ -2018,6 +2071,10 @@ virNodeDevCapsDefParseXML(xmlXPathContextPtr ctxt,
ret = virNodeDevCapAPCardParseXML(ctxt, def, node,
&caps->data.ap_card);
break;
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
+ ret = virNodeDevCapAPQueueParseXML(ctxt, def, node,
+ &caps->data.ap_queue);
+ break;
case VIR_NODE_DEV_CAP_MDEV_TYPES:
case VIR_NODE_DEV_CAP_FC_HOST:
case VIR_NODE_DEV_CAP_VPORTS:
@@ -2346,6 +2403,7 @@ virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps)
case VIR_NODE_DEV_CAP_CCW_DEV:
case VIR_NODE_DEV_CAP_VDPA:
case VIR_NODE_DEV_CAP_AP_CARD:
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
case VIR_NODE_DEV_CAP_LAST:
/* This case is here to shutup the compiler */
break;
@@ -2406,6 +2464,7 @@ virNodeDeviceUpdateCaps(virNodeDeviceDefPtr def)
case VIR_NODE_DEV_CAP_CCW_DEV:
case VIR_NODE_DEV_CAP_VDPA:
case VIR_NODE_DEV_CAP_AP_CARD:
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
case VIR_NODE_DEV_CAP_LAST:
break;
}
diff --git a/src/conf/node_device_conf.h b/src/conf/node_device_conf.h
index f86f880c..27cb0004 100644
--- a/src/conf/node_device_conf.h
+++ b/src/conf/node_device_conf.h
@@ -67,6 +67,7 @@ typedef enum {
VIR_NODE_DEV_CAP_CSS_DEV, /* s390 channel subsystem device */
VIR_NODE_DEV_CAP_VDPA, /* vDPA device */
VIR_NODE_DEV_CAP_AP_CARD, /* s390 AP Card device */
+ VIR_NODE_DEV_CAP_AP_QUEUE, /* s390 AP Queue */
VIR_NODE_DEV_CAP_LAST
} virNodeDevCapType;
@@ -296,6 +297,13 @@ struct _virNodeDevCapAPCard {
unsigned int ap_adapter;
};
+typedef struct _virNodeDevCapAPQueue virNodeDevCapAPQueue;
+typedef virNodeDevCapAPQueue *virNodeDevCapAPQueuePtr;
+struct _virNodeDevCapAPQueue {
+ unsigned int ap_adapter;
+ unsigned int ap_domain;
+};
+
typedef struct _virNodeDevCapData virNodeDevCapData;
typedef virNodeDevCapData *virNodeDevCapDataPtr;
struct _virNodeDevCapData {
@@ -316,6 +324,7 @@ struct _virNodeDevCapData {
virNodeDevCapCCW ccw_dev;
virNodeDevCapVDPA vdpa;
virNodeDevCapAPCard ap_card;
+ virNodeDevCapAPQueue ap_queue;
};
};
diff --git a/src/conf/virnodedeviceobj.c b/src/conf/virnodedeviceobj.c
index 0aa59289..8b4302d7 100644
--- a/src/conf/virnodedeviceobj.c
+++ b/src/conf/virnodedeviceobj.c
@@ -718,6 +718,7 @@ virNodeDeviceObjHasCap(const virNodeDeviceObj *obj,
case VIR_NODE_DEV_CAP_CCW_DEV:
case VIR_NODE_DEV_CAP_VDPA:
case VIR_NODE_DEV_CAP_AP_CARD:
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
case VIR_NODE_DEV_CAP_LAST:
break;
}
diff --git a/src/node_device/node_device_udev.c b/src/node_device/node_device_udev.c
index b4eb4553..6bbff571 100644
--- a/src/node_device/node_device_udev.c
+++ b/src/node_device/node_device_udev.c
@@ -1218,6 +1218,29 @@ udevProcessAPCard(struct udev_device *device,
}
+static int
+udevProcessAPQueue(struct udev_device *device,
+ virNodeDeviceDefPtr def)
+{
+ char *c;
+ virNodeDevCapDataPtr data = &def->caps->data;
+
+ if ((c = strrchr(def->sysfs_path, '/')) == NULL ||
+ virStrToLong_ui(c + 1, &c, 16, &data->ap_queue.ap_adapter) < 0 ||
+ virStrToLong_ui(c + 1, &c, 16, &data->ap_queue.ap_domain) < 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("failed to parse the AP Queue from sysfs path: '%s'"),
+ def->sysfs_path);
+ return -1;
+ }
+
+ if (udevGenerateDeviceName(device, def, NULL) != 0)
+ return -1;
+
+ return 0;
+}
+
+
static int
udevGetDeviceNodes(struct udev_device *device,
virNodeDeviceDefPtr def)
@@ -1274,6 +1297,8 @@ udevGetDeviceType(struct udev_device *device,
*type = VIR_NODE_DEV_CAP_DRM;
else if (STREQ(devtype, "ap_card"))
*type = VIR_NODE_DEV_CAP_AP_CARD;
+ else if (STREQ(devtype, "ap_queue"))
+ *type = VIR_NODE_DEV_CAP_AP_QUEUE;
} else {
/* PCI devices don't set the DEVTYPE property. */
if (udevHasDeviceProperty(device, "PCI_CLASS"))
@@ -1351,6 +1376,8 @@ udevGetDeviceDetails(struct udev_device *device,
return udevProcessVDPA(device, def);
case VIR_NODE_DEV_CAP_AP_CARD:
return udevProcessAPCard(device, def);
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
+ return udevProcessAPQueue(device, def);
case VIR_NODE_DEV_CAP_MDEV_TYPES:
case VIR_NODE_DEV_CAP_SYSTEM:
case VIR_NODE_DEV_CAP_FC_HOST:
diff --git a/tools/virsh-nodedev.c b/tools/virsh-nodedev.c
index 32c12553..81752e85 100644
--- a/tools/virsh-nodedev.c
+++ b/tools/virsh-nodedev.c
@@ -468,6 +468,7 @@ cmdNodeListDevices(vshControl *ctl, const vshCmd *cmd G_GNUC_UNUSED)
flags |= VIR_CONNECT_LIST_NODE_DEVICES_CAP_VDPA;
break;
case VIR_NODE_DEV_CAP_AP_CARD:
+ case VIR_NODE_DEV_CAP_AP_QUEUE:
case VIR_NODE_DEV_CAP_LAST:
break;
}
--
2.26.2
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