netdev - [PATCH net-next v2 1/4] net: bcmgenet: Add netconsole support

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Date:	Fri, 31 Jul 2015 11:42:54 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, pgynther@...gle.com, jaedon.shin@...il.com,
	Florian Fainelli <f.fainelli@...il.com>,
	vivien.didelot@...oirfairelinux.com,
	jerome.oufella@...oirfairelinux.com, linux@...ck-us.net,
	andrew@...n.ch, cphealy@...il.com, mathieu@...eaurora.org,
	jonasj76@...il.com, andrey.volkov@...vision.fr,
	Chris.Packham@...iedtelesis.co.nz, alexander.h.duyck@...hat.com
Subject: [PATCH net-next v2 1/4] net: bcmgenet: Add netconsole support

Implement a poll controller for netconsole which invokes both of our
interrupt handlers for the different RX/TX queues.

Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
Changes in v2:

- properly pair the interrupt handler with disable/enable_irq pairs
- remove the call to bcmgenet_tx_reclaim, this is done by the handler

 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index c6f2d396edf0..eb080ef8ee97 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -2388,6 +2388,23 @@ static irqreturn_t bcmgenet_wol_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void bcmgenet_poll_controller(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	/* Invoke the main RX/TX interrupt handler */
+	disable_irq(priv->irq0);
+	bcmgenet_isr0(priv->irq0, priv);
+	enable_irq(priv->irq0);
+
+	/* And the interrupt handler for RX/TX priority queues */
+	disable_irq(priv->irq1);
+	bcmgenet_isr1(priv->irq1, priv);
+	enable_irq(priv->irq1);
+}
+#endif
+
 static void bcmgenet_umac_reset(struct bcmgenet_priv *priv)
 {
 	u32 reg;
@@ -2939,6 +2956,9 @@ static const struct net_device_ops bcmgenet_netdev_ops = {
 	.ndo_set_mac_address	= bcmgenet_set_mac_addr,
 	.ndo_do_ioctl		= bcmgenet_ioctl,
 	.ndo_set_features	= bcmgenet_set_features,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	.ndo_poll_controller	= bcmgenet_poll_controller,
+#endif
 };
 
 /* Array of GENET hardware parameters/characteristics */
-- 
2.1.0

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