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path: root/drivers/s390/net/ctcm_main.c
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Diffstat (limited to 'drivers/s390/net/ctcm_main.c')
-rw-r--r--drivers/s390/net/ctcm_main.c72
1 files changed, 45 insertions, 27 deletions
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index a4e29836a2aa..2678573becec 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -21,6 +21,9 @@
#undef DEBUGDATA
#undef DEBUGCCW
+#define KMSG_COMPONENT "ctcm"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
@@ -281,14 +284,16 @@ static long ctcm_check_irb_error(struct ccw_device *cdev, struct irb *irb)
switch (PTR_ERR(irb)) {
case -EIO:
- ctcm_pr_warn("i/o-error on device %s\n", dev_name(&cdev->dev));
+ dev_err(&cdev->dev,
+ "An I/O-error occurred on the CTCM device\n");
break;
case -ETIMEDOUT:
- ctcm_pr_warn("timeout on device %s\n", dev_name(&cdev->dev));
+ dev_err(&cdev->dev,
+ "An adapter hardware operation timed out\n");
break;
default:
- ctcm_pr_warn("unknown error %ld on device %s\n",
- PTR_ERR(irb), dev_name(&cdev->dev));
+ dev_err(&cdev->dev,
+ "An error occurred on the adapter hardware\n");
}
return PTR_ERR(irb);
}
@@ -309,15 +314,17 @@ static inline void ccw_unit_check(struct channel *ch, __u8 sense)
if (sense & SNS0_INTERVENTION_REQ) {
if (sense & 0x01) {
if (ch->sense_rc != 0x01) {
- ctcm_pr_debug("%s: Interface disc. or Sel. "
- "reset (remote)\n", ch->id);
+ pr_notice(
+ "%s: The communication peer has "
+ "disconnected\n", ch->id);
ch->sense_rc = 0x01;
}
fsm_event(ch->fsm, CTC_EVENT_UC_RCRESET, ch);
} else {
if (ch->sense_rc != SNS0_INTERVENTION_REQ) {
- ctcm_pr_debug("%s: System reset (remote)\n",
- ch->id);
+ pr_notice(
+ "%s: The remote operating system is "
+ "not available\n", ch->id);
ch->sense_rc = SNS0_INTERVENTION_REQ;
}
fsm_event(ch->fsm, CTC_EVENT_UC_RSRESET, ch);
@@ -1194,8 +1201,11 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
/* Check for unsolicited interrupts. */
if (cgdev == NULL) {
- ctcm_pr_warn("ctcm: Got unsolicited irq: c-%02x d-%02x\n",
- cstat, dstat);
+ CTCM_DBF_TEXT_(TRACE, CTC_DBF_ERROR,
+ "%s(%s) unsolicited irq: c-%02x d-%02x\n",
+ CTCM_FUNTAIL, dev_name(&cdev->dev), cstat, dstat);
+ dev_warn(&cdev->dev,
+ "The adapter received a non-specific IRQ\n");
return;
}
@@ -1207,31 +1217,34 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
else if (priv->channel[WRITE]->cdev == cdev)
ch = priv->channel[WRITE];
else {
- ctcm_pr_err("ctcm: Can't determine channel for interrupt, "
- "device %s\n", dev_name(&cdev->dev));
+ dev_err(&cdev->dev,
+ "%s: Internal error: Can't determine channel for "
+ "interrupt device %s\n",
+ __func__, dev_name(&cdev->dev));
+ /* Explain: inconsistent internal structures */
return;
}
dev = ch->netdev;
if (dev == NULL) {
- ctcm_pr_crit("ctcm: %s dev=NULL bus_id=%s, ch=0x%p\n",
- __func__, dev_name(&cdev->dev), ch);
+ dev_err(&cdev->dev,
+ "%s Internal error: net_device is NULL, ch = 0x%p\n",
+ __func__, ch);
+ /* Explain: inconsistent internal structures */
return;
}
- CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
- "%s(%s): int. for %s: cstat=%02x dstat=%02x",
- CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat);
-
/* Copy interruption response block. */
memcpy(ch->irb, irb, sizeof(struct irb));
+ /* Issue error message and return on subchannel error code */
if (irb->scsw.cmd.cstat) {
- /* Check for good subchannel return code, otherwise error message */
fsm_event(ch->fsm, CTC_EVENT_SC_UNKNOWN, ch);
- ctcm_pr_warn("%s: subchannel check for dev: %s - %02x %02x\n",
- dev->name, ch->id, irb->scsw.cmd.cstat,
- irb->scsw.cmd.dstat);
+ CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
+ "%s(%s): sub-ch check %s: cs=%02x ds=%02x",
+ CTCM_FUNTAIL, dev->name, ch->id, cstat, dstat);
+ dev_warn(&cdev->dev,
+ "A check occurred on the subchannel\n");
return;
}
@@ -1239,7 +1252,7 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) {
if ((irb->ecw[0] & ch->sense_rc) == 0)
/* print it only once */
- CTCM_DBF_TEXT_(TRACE, CTC_DBF_INFO,
+ CTCM_DBF_TEXT_(TRACE, CTC_DBF_WARN,
"%s(%s): sense=%02x, ds=%02x",
CTCM_FUNTAIL, ch->id, irb->ecw[0], dstat);
ccw_unit_check(ch, irb->ecw[0]);
@@ -1574,6 +1587,11 @@ static int ctcm_new_device(struct ccwgroup_device *cgdev)
strlcpy(priv->fsm->name, dev->name, sizeof(priv->fsm->name));
+ dev_info(&dev->dev,
+ "setup OK : r/w = %s/%s, protocol : %d\n",
+ priv->channel[READ]->id,
+ priv->channel[WRITE]->id, priv->protocol);
+
CTCM_DBF_TEXT_(SETUP, CTC_DBF_INFO,
"setup(%s) OK : r/w = %s/%s, protocol : %d", dev->name,
priv->channel[READ]->id,
@@ -1687,7 +1705,7 @@ static void __exit ctcm_exit(void)
{
unregister_cu3088_discipline(&ctcm_group_driver);
ctcm_unregister_dbf_views();
- ctcm_pr_info("CTCM driver unloaded\n");
+ pr_info("CTCM driver unloaded\n");
}
/*
@@ -1695,7 +1713,7 @@ static void __exit ctcm_exit(void)
*/
static void print_banner(void)
{
- printk(KERN_INFO "CTCM driver initialized\n");
+ pr_info("CTCM driver initialized\n");
}
/**
@@ -1717,8 +1735,8 @@ static int __init ctcm_init(void)
ret = register_cu3088_discipline(&ctcm_group_driver);
if (ret) {
ctcm_unregister_dbf_views();
- ctcm_pr_crit("ctcm_init failed with register_cu3088_discipline "
- "(rc = %d)\n", ret);
+ pr_err("%s / register_cu3088_discipline failed, ret = %d\n",
+ __func__, ret);
return ret;
}
print_banner();