FS_ENET: Add polling support
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index 83c9bf2..dcbe83c 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -1,17 +1,17 @@
/*
* Combined Ethernet driver for Motorola MPC8xx and MPC82xx.
*
- * Copyright (c) 2003 Intracom S.A.
+ * Copyright (c) 2003 Intracom S.A.
* by Pantelis Antoniou <panto@intracom.gr>
- *
- * 2005 (c) MontaVista Software, Inc.
+ *
+ * 2005 (c) MontaVista Software, Inc.
* Vitaly Bordug <vbordug@ru.mvista.com>
*
* Heavily based on original FEC driver by Dan Malek <dan@embeddededge.com>
* and modifications by Joakim Tjernlund <joakim.tjernlund@lumentis.se>
*
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
* kind, whether express or implied.
*/
@@ -59,6 +59,9 @@
MODULE_PARM_DESC(fs_enet_debug,
"Freescale bitmapped debugging message enable value");
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void fs_enet_netpoll(struct net_device *dev);
+#endif
static void fs_set_multicast_list(struct net_device *dev)
{
@@ -104,7 +107,7 @@
dev->name);
/*
- * Check for errors.
+ * Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
@@ -181,7 +184,7 @@
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
- * Update BD pointer to next entry.
+ * Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
@@ -234,7 +237,7 @@
dev->name);
/*
- * Check for errors.
+ * Check for errors.
*/
if (sc & (BD_ENET_RX_LG | BD_ENET_RX_SH | BD_ENET_RX_CL |
BD_ENET_RX_NO | BD_ENET_RX_CR | BD_ENET_RX_OV)) {
@@ -312,7 +315,7 @@
CBDW_SC(bdp, (sc & ~BD_ENET_RX_STATS) | BD_ENET_RX_EMPTY);
/*
- * Update BD pointer to next entry.
+ * Update BD pointer to next entry.
*/
if ((sc & BD_ENET_RX_WRAP) == 0)
bdp++;
@@ -349,7 +352,7 @@
skb = fep->tx_skbuff[dirtyidx];
/*
- * Check for errors.
+ * Check for errors.
*/
if (sc & (BD_ENET_TX_HB | BD_ENET_TX_LC |
BD_ENET_TX_RL | BD_ENET_TX_UN | BD_ENET_TX_CSL)) {
@@ -389,13 +392,13 @@
skb->len, DMA_TO_DEVICE);
/*
- * Free the sk buffer associated with this last transmit.
+ * Free the sk buffer associated with this last transmit.
*/
dev_kfree_skb_irq(skb);
fep->tx_skbuff[dirtyidx] = NULL;
/*
- * Update pointer to next buffer descriptor to be transmitted.
+ * Update pointer to next buffer descriptor to be transmitted.
*/
if ((sc & BD_ENET_TX_WRAP) == 0)
bdp++;
@@ -491,7 +494,7 @@
fep->cur_rx = fep->rx_bd_base;
/*
- * Initialize the receive buffer descriptors.
+ * Initialize the receive buffer descriptors.
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
skb = dev_alloc_skb(ENET_RX_FRSIZE);
@@ -511,7 +514,7 @@
((i < fep->rx_ring - 1) ? 0 : BD_SC_WRAP));
}
/*
- * if we failed, fillup remainder
+ * if we failed, fillup remainder
*/
for (; i < fep->rx_ring; i++, bdp++) {
fep->rx_skbuff[i] = NULL;
@@ -519,7 +522,7 @@
}
/*
- * ...and the same for transmit.
+ * ...and the same for transmit.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
fep->tx_skbuff[i] = NULL;
@@ -537,7 +540,7 @@
int i;
/*
- * Reset SKB transmit buffers.
+ * Reset SKB transmit buffers.
*/
for (i = 0, bdp = fep->tx_bd_base; i < fep->tx_ring; i++, bdp++) {
if ((skb = fep->tx_skbuff[i]) == NULL)
@@ -552,7 +555,7 @@
}
/*
- * Reset SKB receive buffers
+ * Reset SKB receive buffers
*/
for (i = 0, bdp = fep->rx_bd_base; i < fep->rx_ring; i++, bdp++) {
if ((skb = fep->rx_skbuff[i]) == NULL)
@@ -582,7 +585,7 @@
spin_lock_irqsave(&fep->tx_lock, flags);
/*
- * Fill in a Tx ring entry
+ * Fill in a Tx ring entry
*/
bdp = fep->cur_tx;
@@ -601,19 +604,19 @@
curidx = bdp - fep->tx_bd_base;
/*
- * Clear all of the status flags.
+ * Clear all of the status flags.
*/
CBDC_SC(bdp, BD_ENET_TX_STATS);
/*
- * Save skb pointer.
+ * Save skb pointer.
*/
fep->tx_skbuff[curidx] = skb;
fep->stats.tx_bytes += skb->len;
/*
- * Push the data cache so the CPM does not get stale memory data.
+ * Push the data cache so the CPM does not get stale memory data.
*/
CBDW_BUFADDR(bdp, dma_map_single(fep->dev,
skb->data, skb->len, DMA_TO_DEVICE));
@@ -622,7 +625,7 @@
dev->trans_start = jiffies;
/*
- * If this was the last BD in the ring, start at the beginning again.
+ * If this was the last BD in the ring, start at the beginning again.
*/
if ((CBDR_SC(bdp) & BD_ENET_TX_WRAP) == 0)
fep->cur_tx++;
@@ -1003,13 +1006,13 @@
spin_lock_init(&fep->tx_lock);
/*
- * Set the Ethernet address.
+ * Set the Ethernet address.
*/
for (i = 0; i < 6; i++)
ndev->dev_addr[i] = fpi->macaddr[i];
-
+
r = (*fep->ops->allocate_bd)(ndev);
-
+
if (fep->ring_base == NULL) {
printk(KERN_ERR DRV_MODULE_NAME
": %s buffer descriptor alloc failed (%d).\n", ndev->name, r);
@@ -1028,7 +1031,7 @@
fep->rx_ring = fpi->rx_ring;
/*
- * The FEC Ethernet specific entries in the device structure.
+ * The FEC Ethernet specific entries in the device structure.
*/
ndev->open = fs_enet_open;
ndev->hard_start_xmit = fs_enet_start_xmit;
@@ -1037,6 +1040,11 @@
ndev->stop = fs_enet_close;
ndev->get_stats = fs_enet_get_stats;
ndev->set_multicast_list = fs_set_multicast_list;
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ ndev->poll_controller = fs_enet_netpoll;
+#endif
+
netif_napi_add(ndev, &fep->napi,
fs_enet_rx_napi, fpi->napi_weight);
@@ -1251,7 +1259,7 @@
err:
cleanup_immap();
return r;
-
+
}
static void __exit fs_cleanup(void)
@@ -1262,6 +1270,15 @@
cleanup_immap();
}
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void fs_enet_netpoll(struct net_device *dev)
+{
+ disable_irq(dev->irq);
+ fs_enet_interrupt(dev->irq, dev, NULL);
+ enable_irq(dev->irq);
+}
+#endif
+
/**************************************************************************************/
module_init(fs_init);