/*
* IUCV network driver
*
- * Copyright 2001 IBM Deutschland Entwicklung GmbH, IBM Corporation
- * Author(s): Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ * Copyright IBM Corp. 2001, 2009
*
- * Sysfs integration and all bugs therein by Cornelia Huck
- * (cornelia.huck@de.ibm.com)
+ * Author(s):
+ * Original netiucv driver:
+ * Fritz Elfert (elfert@de.ibm.com, felfert@millenux.com)
+ * Sysfs integration and all bugs therein:
+ * Cornelia Huck (cornelia.huck@de.ibm.com)
+ * PM functions:
+ * Ursula Braun (ursula.braun@de.ibm.com)
*
* Documentation used:
* the source of the original IUCV driver by:
#define PRINTK_HEADER " iucv: " /* for debugging */
+/* dummy device to make sure netiucv_pm functions are called */
+static struct device *netiucv_dev;
+
+static int netiucv_pm_prepare(struct device *);
+static void netiucv_pm_complete(struct device *);
+static int netiucv_pm_freeze(struct device *);
+static int netiucv_pm_restore_thaw(struct device *);
+
+static struct dev_pm_ops netiucv_pm_ops = {
+ .prepare = netiucv_pm_prepare,
+ .complete = netiucv_pm_complete,
+ .freeze = netiucv_pm_freeze,
+ .thaw = netiucv_pm_restore_thaw,
+ .restore = netiucv_pm_restore_thaw,
+};
+
static struct device_driver netiucv_driver = {
.owner = THIS_MODULE,
.name = "netiucv",
.bus = &iucv_bus,
+ .pm = &netiucv_pm_ops,
};
static int netiucv_callback_connreq(struct iucv_path *,
fsm_instance *fsm;
struct iucv_connection *conn;
struct device *dev;
+ int pm_state;
};
/**
return 0;
}
+static int netiucv_pm_prepare(struct device *dev)
+{
+ IUCV_DBF_TEXT(trace, 3, __func__);
+ return 0;
+}
+
+static void netiucv_pm_complete(struct device *dev)
+{
+ IUCV_DBF_TEXT(trace, 3, __func__);
+ return;
+}
+
+/**
+ * netiucv_pm_freeze() - Freeze PM callback
+ * @dev: netiucv device
+ *
+ * close open netiucv interfaces
+ */
+static int netiucv_pm_freeze(struct device *dev)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+ struct net_device *ndev = NULL;
+ int rc = 0;
+
+ IUCV_DBF_TEXT(trace, 3, __func__);
+ if (priv && priv->conn)
+ ndev = priv->conn->netdev;
+ if (!ndev)
+ goto out;
+ netif_device_detach(ndev);
+ priv->pm_state = fsm_getstate(priv->fsm);
+ rc = netiucv_close(ndev);
+out:
+ return rc;
+}
+
+/**
+ * netiucv_pm_restore_thaw() - Thaw and restore PM callback
+ * @dev: netiucv device
+ *
+ * re-open netiucv interfaces closed during freeze
+ */
+static int netiucv_pm_restore_thaw(struct device *dev)
+{
+ struct netiucv_priv *priv = dev->driver_data;
+ struct net_device *ndev = NULL;
+ int rc = 0;
+
+ IUCV_DBF_TEXT(trace, 3, __func__);
+ if (priv && priv->conn)
+ ndev = priv->conn->netdev;
+ if (!ndev)
+ goto out;
+ switch (priv->pm_state) {
+ case DEV_STATE_RUNNING:
+ case DEV_STATE_STARTWAIT:
+ rc = netiucv_open(ndev);
+ break;
+ default:
+ break;
+ }
+ netif_device_attach(ndev);
+out:
+ return rc;
+}
+
/**
* Start transmission of a packet.
* Called from generic network device layer.
return NETDEV_TX_BUSY;
}
dev->trans_start = jiffies;
- rc = netiucv_transmit_skb(privptr->conn, skb) != 0;
+ rc = netiucv_transmit_skb(privptr->conn, skb);
netiucv_clear_busy(dev);
- return rc;
+ return rc ? NETDEV_TX_BUSY : NETDEV_TX_OK;
}
/**
static ssize_t user_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%s\n", netiucv_printname(priv->conn->userid));
static ssize_t user_write(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->conn->netdev;
char *p;
char *tmp;
static ssize_t buffer_show (struct device *dev, struct device_attribute *attr,
char *buf)
-{ struct netiucv_priv *priv = dev->driver_data;
+{
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%d\n", priv->conn->max_buffsize);
static ssize_t buffer_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
struct net_device *ndev = priv->conn->netdev;
char *e;
int bs1;
static ssize_t dev_fsm_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%s\n", fsm_getstate_str(priv->fsm));
static ssize_t conn_fsm_show (struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%s\n", fsm_getstate_str(priv->conn->fsm));
static ssize_t maxmulti_show (struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.maxmulti);
struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.maxmulti = 0;
static ssize_t maxcq_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.maxcqueue);
static ssize_t maxcq_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.maxcqueue = 0;
static ssize_t sdoio_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.doios_single);
static ssize_t sdoio_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.doios_single = 0;
static ssize_t mdoio_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.doios_multi);
static ssize_t mdoio_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
priv->conn->prof.doios_multi = 0;
static ssize_t txlen_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.txlen);
static ssize_t txlen_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.txlen = 0;
static ssize_t txtime_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.tx_time);
static ssize_t txtime_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.tx_time = 0;
static ssize_t txpend_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.tx_pending);
static ssize_t txpend_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.tx_pending = 0;
static ssize_t txmpnd_show (struct device *dev, struct device_attribute *attr,
char *buf)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 5, __func__);
return sprintf(buf, "%ld\n", priv->conn->prof.tx_max_pending);
static ssize_t txmpnd_write (struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct netiucv_priv *priv = dev->driver_data;
+ struct netiucv_priv *priv = dev_get_drvdata(dev);
IUCV_DBF_TEXT(trace, 4, __func__);
priv->conn->prof.tx_max_pending = 0;
struct device *dev = kzalloc(sizeof(struct device), GFP_KERNEL);
int ret;
-
IUCV_DBF_TEXT(trace, 3, __func__);
if (dev) {
if (ret)
goto out_unreg;
priv->dev = dev;
- dev->driver_data = priv;
+ dev_set_drvdata(dev, priv);
return 0;
out_unreg:
netiucv_unregister_device(dev);
}
+ device_unregister(netiucv_dev);
driver_unregister(&netiucv_driver);
iucv_unregister(&netiucv_handler, 1);
iucv_unregister_dbf_views();
IUCV_DBF_TEXT_(setup, 2, "ret %d from driver_register\n", rc);
goto out_iucv;
}
-
+ /* establish dummy device */
+ netiucv_dev = kzalloc(sizeof(struct device), GFP_KERNEL);
+ if (!netiucv_dev) {
+ rc = -ENOMEM;
+ goto out_driver;
+ }
+ dev_set_name(netiucv_dev, "netiucv");
+ netiucv_dev->bus = &iucv_bus;
+ netiucv_dev->parent = iucv_root;
+ netiucv_dev->release = (void (*)(struct device *))kfree;
+ netiucv_dev->driver = &netiucv_driver;
+ rc = device_register(netiucv_dev);
+ if (rc)
+ goto out_driver;
netiucv_banner();
return rc;
+out_driver:
+ driver_unregister(&netiucv_driver);
out_iucv:
iucv_unregister(&netiucv_handler, 1);
out_dbf: