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[S390] pm: qeth driver power management callbacks
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Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Frank Blaschka authored and Martin Schwidefsky committed Jun 16, 2009
1 parent cbb2aec commit bbcfcdc
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Showing 3 changed files with 152 additions and 3 deletions.
51 changes: 50 additions & 1 deletion drivers/s390/net/qeth_core_main.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
* drivers/s390/net/qeth_core_main.c
*
* Copyright IBM Corp. 2007
* Copyright IBM Corp. 2007, 2009
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
Expand Down Expand Up @@ -4195,6 +4195,50 @@ static void qeth_core_shutdown(struct ccwgroup_device *gdev)
card->discipline.ccwgdriver->shutdown(gdev);
}

static int qeth_core_prepare(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->prepare)
return card->discipline.ccwgdriver->prepare(gdev);
return 0;
}

static void qeth_core_complete(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->complete)
card->discipline.ccwgdriver->complete(gdev);
}

static int qeth_core_freeze(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->freeze)
return card->discipline.ccwgdriver->freeze(gdev);
return 0;
}

static int qeth_core_thaw(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->thaw)
return card->discipline.ccwgdriver->thaw(gdev);
return 0;
}

static int qeth_core_restore(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
if (card->discipline.ccwgdriver &&
card->discipline.ccwgdriver->restore)
return card->discipline.ccwgdriver->restore(gdev);
return 0;
}

static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
.owner = THIS_MODULE,
.name = "qeth",
Expand All @@ -4204,6 +4248,11 @@ static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
.set_online = qeth_core_set_online,
.set_offline = qeth_core_set_offline,
.shutdown = qeth_core_shutdown,
.prepare = qeth_core_prepare,
.complete = qeth_core_complete,
.freeze = qeth_core_freeze,
.thaw = qeth_core_thaw,
.restore = qeth_core_restore,
};

static ssize_t
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52 changes: 51 additions & 1 deletion drivers/s390/net/qeth_l2_main.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
* drivers/s390/net/qeth_l2_main.c
*
* Copyright IBM Corp. 2007
* Copyright IBM Corp. 2007, 2009
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
Expand Down Expand Up @@ -1141,12 +1141,62 @@ static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
qeth_clear_qdio_buffers(card);
}

static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);

if (card->dev)
netif_device_detach(card->dev);
qeth_set_allowed_threads(card, 0, 1);
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
if (gdev->state == CCWGROUP_OFFLINE)
return 0;
if (card->state == CARD_STATE_UP) {
card->use_hard_stop = 1;
__qeth_l2_set_offline(card->gdev, 1);
} else
__qeth_l2_set_offline(card->gdev, 0);
return 0;
}

static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
int rc = 0;

if (gdev->state == CCWGROUP_OFFLINE)
goto out;

if (card->state == CARD_STATE_RECOVER) {
rc = __qeth_l2_set_online(card->gdev, 1);
if (rc) {
if (card->dev) {
rtnl_lock();
dev_close(card->dev);
rtnl_unlock();
}
}
} else
rc = __qeth_l2_set_online(card->gdev, 0);
out:
qeth_set_allowed_threads(card, 0xffffffff, 0);
if (card->dev)
netif_device_attach(card->dev);
if (rc)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
return rc;
}

struct ccwgroup_driver qeth_l2_ccwgroup_driver = {
.probe = qeth_l2_probe_device,
.remove = qeth_l2_remove_device,
.set_online = qeth_l2_set_online,
.set_offline = qeth_l2_set_offline,
.shutdown = qeth_l2_shutdown,
.freeze = qeth_l2_pm_suspend,
.thaw = qeth_l2_pm_resume,
.restore = qeth_l2_pm_resume,
};
EXPORT_SYMBOL_GPL(qeth_l2_ccwgroup_driver);

Expand Down
52 changes: 51 additions & 1 deletion drivers/s390/net/qeth_l3_main.c
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
/*
* drivers/s390/net/qeth_l3_main.c
*
* Copyright IBM Corp. 2007
* Copyright IBM Corp. 2007, 2009
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
Expand Down Expand Up @@ -3283,12 +3283,62 @@ static void qeth_l3_shutdown(struct ccwgroup_device *gdev)
qeth_clear_qdio_buffers(card);
}

static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);

if (card->dev)
netif_device_detach(card->dev);
qeth_set_allowed_threads(card, 0, 1);
wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
if (gdev->state == CCWGROUP_OFFLINE)
return 0;
if (card->state == CARD_STATE_UP) {
card->use_hard_stop = 1;
__qeth_l3_set_offline(card->gdev, 1);
} else
__qeth_l3_set_offline(card->gdev, 0);
return 0;
}

static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
{
struct qeth_card *card = dev_get_drvdata(&gdev->dev);
int rc = 0;

if (gdev->state == CCWGROUP_OFFLINE)
goto out;

if (card->state == CARD_STATE_RECOVER) {
rc = __qeth_l3_set_online(card->gdev, 1);
if (rc) {
if (card->dev) {
rtnl_lock();
dev_close(card->dev);
rtnl_unlock();
}
}
} else
rc = __qeth_l3_set_online(card->gdev, 0);
out:
qeth_set_allowed_threads(card, 0xffffffff, 0);
if (card->dev)
netif_device_attach(card->dev);
if (rc)
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
return rc;
}

struct ccwgroup_driver qeth_l3_ccwgroup_driver = {
.probe = qeth_l3_probe_device,
.remove = qeth_l3_remove_device,
.set_online = qeth_l3_set_online,
.set_offline = qeth_l3_set_offline,
.shutdown = qeth_l3_shutdown,
.freeze = qeth_l3_pm_suspend,
.thaw = qeth_l3_pm_resume,
.restore = qeth_l3_pm_resume,
};
EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver);

Expand Down

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