aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/net/gianfar.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/gianfar.c')
-rw-r--r--drivers/net/gianfar.c174
1 files changed, 113 insertions, 61 deletions
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 9831b3f408aa..65f55877be95 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -93,7 +93,7 @@
#include <linux/of.h>
#include "gianfar.h"
-#include "gianfar_mii.h"
+#include "fsl_pq_mdio.h"
#define TX_TIMEOUT (1*HZ)
#undef BRIEF_GFAR_ERRORS
@@ -140,13 +140,26 @@ static void gfar_halt_nodisable(struct net_device *dev);
void gfar_start(struct net_device *dev);
static void gfar_clear_exact_match(struct net_device *dev);
static void gfar_set_mac_for_addr(struct net_device *dev, int num, u8 *addr);
-
-extern const struct ethtool_ops gfar_ethtool_ops;
+static int gfar_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
MODULE_AUTHOR("Freescale Semiconductor, Inc");
MODULE_DESCRIPTION("Gianfar Ethernet Driver");
MODULE_LICENSE("GPL");
+static const struct net_device_ops gfar_netdev_ops = {
+ .ndo_open = gfar_enet_open,
+ .ndo_start_xmit = gfar_start_xmit,
+ .ndo_stop = gfar_close,
+ .ndo_change_mtu = gfar_change_mtu,
+ .ndo_set_multicast_list = gfar_set_multi,
+ .ndo_tx_timeout = gfar_timeout,
+ .ndo_do_ioctl = gfar_ioctl,
+ .ndo_vlan_rx_register = gfar_vlan_rx_register,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ .ndo_poll_controller = gfar_netpoll,
+#endif
+};
+
/* Returns 1 if incoming frames use an FCB */
static inline int gfar_uses_fcb(struct gfar_private *priv)
{
@@ -166,6 +179,9 @@ static int gfar_of_init(struct net_device *dev)
struct gfar_private *priv = netdev_priv(dev);
struct device_node *np = priv->node;
char bus_name[MII_BUS_ID_SIZE];
+ const u32 *stash;
+ const u32 *stash_len;
+ const u32 *stash_idx;
if (!np || !of_device_is_available(np))
return -ENODEV;
@@ -195,6 +211,26 @@ static int gfar_of_init(struct net_device *dev)
}
}
+ stash = of_get_property(np, "bd-stash", NULL);
+
+ if(stash) {
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BD_STASHING;
+ priv->bd_stash_en = 1;
+ }
+
+ stash_len = of_get_property(np, "rx-stash-len", NULL);
+
+ if (stash_len)
+ priv->rx_stash_size = *stash_len;
+
+ stash_idx = of_get_property(np, "rx-stash-idx", NULL);
+
+ if (stash_idx)
+ priv->rx_stash_index = *stash_idx;
+
+ if (stash_len || stash_idx)
+ priv->device_flags |= FSL_GIANFAR_DEV_HAS_BUF_STASHING;
+
mac_addr = of_get_mac_address(np);
if (mac_addr)
memcpy(dev->dev_addr, mac_addr, MAC_ADDR_LEN);
@@ -253,9 +289,9 @@ static int gfar_of_init(struct net_device *dev)
id = of_get_property(phy, "reg", NULL);
of_node_put(phy);
- of_node_put(mdio);
- gfar_mdio_bus_name(bus_name, mdio);
+ fsl_pq_mdio_bus_name(bus_name, mdio);
+ of_node_put(mdio);
snprintf(priv->phy_bus_id, sizeof(priv->phy_bus_id), "%s:%02x",
bus_name, *id);
}
@@ -329,8 +365,10 @@ static int gfar_probe(struct of_device *ofdev,
return -ENOMEM;
priv = netdev_priv(dev);
- priv->dev = dev;
+ priv->ndev = dev;
+ priv->ofdev = ofdev;
priv->node = ofdev->node;
+ SET_NETDEV_DEV(dev, &ofdev->dev);
err = gfar_of_init(dev);
@@ -369,21 +407,12 @@ static int gfar_probe(struct of_device *ofdev,
SET_NETDEV_DEV(dev, &ofdev->dev);
/* Fill in the dev structure */
- dev->open = gfar_enet_open;
- dev->hard_start_xmit = gfar_start_xmit;
- dev->tx_timeout = gfar_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
netif_napi_add(dev, &priv->napi, gfar_poll, GFAR_DEV_WEIGHT);
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = gfar_netpoll;
-#endif
- dev->stop = gfar_close;
- dev->change_mtu = gfar_change_mtu;
dev->mtu = 1500;
- dev->set_multicast_list = gfar_set_multi;
+ dev->netdev_ops = &gfar_netdev_ops;
dev->ethtool_ops = &gfar_ethtool_ops;
- dev->do_ioctl = gfar_ioctl;
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_CSUM) {
priv->rx_csum_enable = 1;
@@ -393,11 +422,8 @@ static int gfar_probe(struct of_device *ofdev,
priv->vlgrp = NULL;
- if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN) {
- dev->vlan_rx_register = gfar_vlan_rx_register;
-
+ if (priv->device_flags & FSL_GIANFAR_DEV_HAS_VLAN)
dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
- }
if (priv->device_flags & FSL_GIANFAR_DEV_HAS_EXTENDED_HASH) {
priv->extended_hash = 1;
@@ -425,7 +451,7 @@ static int gfar_probe(struct of_device *ofdev,
priv->hash_width = 8;
priv->hash_regs[0] = &priv->regs->gaddr0;
- priv->hash_regs[1] = &priv->regs->gaddr1;
+ priv->hash_regs[1] = &priv->regs->gaddr1;
priv->hash_regs[2] = &priv->regs->gaddr2;
priv->hash_regs[3] = &priv->regs->gaddr3;
priv->hash_regs[4] = &priv->regs->gaddr4;
@@ -466,6 +492,9 @@ static int gfar_probe(struct of_device *ofdev,
goto register_fail;
}
+ device_init_wakeup(&dev->dev,
+ priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET);
+
/* fill out IRQ number and name fields */
len_devname = strlen(dev->name);
strncpy(&priv->int_name_tx[0], dev->name, len_devname);
@@ -511,7 +540,7 @@ static int gfar_remove(struct of_device *ofdev)
dev_set_drvdata(&ofdev->dev, NULL);
iounmap(priv->regs);
- free_netdev(priv->dev);
+ free_netdev(priv->ndev);
return 0;
}
@@ -520,7 +549,7 @@ static int gfar_remove(struct of_device *ofdev)
static int gfar_suspend(struct of_device *ofdev, pm_message_t state)
{
struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
unsigned long flags;
u32 tempval;
@@ -569,7 +598,7 @@ static int gfar_suspend(struct of_device *ofdev, pm_message_t state)
static int gfar_resume(struct of_device *ofdev)
{
struct gfar_private *priv = dev_get_drvdata(&ofdev->dev);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
unsigned long flags;
u32 tempval;
int magic_packet = priv->wol_en &&
@@ -838,12 +867,12 @@ void stop_gfar(struct net_device *dev)
free_irq(priv->interruptTransmit, dev);
free_irq(priv->interruptReceive, dev);
} else {
- free_irq(priv->interruptTransmit, dev);
+ free_irq(priv->interruptTransmit, dev);
}
free_skb_resources(priv);
- dma_free_coherent(&dev->dev,
+ dma_free_coherent(&priv->ofdev->dev,
sizeof(struct txbd8)*priv->tx_ring_size
+ sizeof(struct rxbd8)*priv->rx_ring_size,
priv->tx_bd_base,
@@ -865,12 +894,12 @@ static void free_skb_resources(struct gfar_private *priv)
if (!priv->tx_skbuff[i])
continue;
- dma_unmap_single(&priv->dev->dev, txbdp->bufPtr,
+ dma_unmap_single(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
txbdp->lstatus = 0;
for (j = 0; j < skb_shinfo(priv->tx_skbuff[i])->nr_frags; j++) {
txbdp++;
- dma_unmap_page(&priv->dev->dev, txbdp->bufPtr,
+ dma_unmap_page(&priv->ofdev->dev, txbdp->bufPtr,
txbdp->length, DMA_TO_DEVICE);
}
txbdp++;
@@ -887,7 +916,7 @@ static void free_skb_resources(struct gfar_private *priv)
if(priv->rx_skbuff != NULL) {
for (i = 0; i < priv->rx_ring_size; i++) {
if (priv->rx_skbuff[i]) {
- dma_unmap_single(&priv->dev->dev, rxbdp->bufPtr,
+ dma_unmap_single(&priv->ofdev->dev, rxbdp->bufPtr,
priv->rx_buffer_size,
DMA_FROM_DEVICE);
@@ -953,7 +982,7 @@ int startup_gfar(struct net_device *dev)
gfar_write(&regs->imask, IMASK_INIT_CLEAR);
/* Allocate memory for the buffer descriptors */
- vaddr = (unsigned long) dma_alloc_coherent(&dev->dev,
+ vaddr = (unsigned long) dma_alloc_coherent(&priv->ofdev->dev,
sizeof (struct txbd8) * priv->tx_ring_size +
sizeof (struct rxbd8) * priv->rx_ring_size,
&addr, GFP_KERNEL);
@@ -1165,7 +1194,7 @@ err_rxalloc_fail:
rx_skb_fail:
free_skb_resources(priv);
tx_skb_fail:
- dma_free_coherent(&dev->dev,
+ dma_free_coherent(&priv->ofdev->dev,
sizeof(struct txbd8)*priv->tx_ring_size
+ sizeof(struct rxbd8)*priv->rx_ring_size,
priv->tx_bd_base,
@@ -1183,6 +1212,8 @@ static int gfar_enet_open(struct net_device *dev)
napi_enable(&priv->napi);
+ skb_queue_head_init(&priv->rx_recycle);
+
/* Initialize a bunch of registers */
init_registers(dev);
@@ -1203,13 +1234,14 @@ static int gfar_enet_open(struct net_device *dev)
netif_start_queue(dev);
+ device_set_wakeup_enable(&dev->dev, priv->wol_en);
+
return err;
}
static inline struct txfcb *gfar_add_fcb(struct sk_buff *skb)
{
- struct txfcb *fcb = (struct txfcb *)skb_push (skb, GMAC_FCB_LEN);
-
+ struct txfcb *fcb = (struct txfcb *)skb_push(skb, GMAC_FCB_LEN);
cacheable_memzero(fcb, GMAC_FCB_LEN);
return fcb;
@@ -1278,6 +1310,22 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
base = priv->tx_bd_base;
+ /* make space for additional header when fcb is needed */
+ if (((skb->ip_summed == CHECKSUM_PARTIAL) ||
+ (priv->vlgrp && vlan_tx_tag_present(skb))) &&
+ (skb_headroom(skb) < GMAC_FCB_LEN)) {
+ struct sk_buff *skb_new;
+
+ skb_new = skb_realloc_headroom(skb, GMAC_FCB_LEN);
+ if (!skb_new) {
+ dev->stats.tx_errors++;
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+ kfree_skb(skb);
+ skb = skb_new;
+ }
+
/* total number of fragments in the SKB */
nr_frags = skb_shinfo(skb)->nr_frags;
@@ -1314,7 +1362,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (i == nr_frags - 1)
lstatus |= BD_LFLAG(TXBD_LAST | TXBD_INTERRUPT);
- bufaddr = dma_map_page(&dev->dev,
+ bufaddr = dma_map_page(&priv->ofdev->dev,
skb_shinfo(skb)->frags[i].page,
skb_shinfo(skb)->frags[i].page_offset,
length,
@@ -1346,7 +1394,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* setup the TxBD length and buffer pointer for the first BD */
priv->tx_skbuff[priv->skb_curtx] = skb;
- txbdp_start->bufPtr = dma_map_single(&dev->dev, skb->data,
+ txbdp_start->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
skb_headlen(skb), DMA_TO_DEVICE);
lstatus |= BD_LFLAG(TXBD_CRC | TXBD_READY) | skb_headlen(skb);
@@ -1389,7 +1437,7 @@ static int gfar_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* Unlock priv */
spin_unlock_irqrestore(&priv->txlock, flags);
- return 0;
+ return NETDEV_TX_OK;
}
/* Stops the kernel queue, and halts the controller */
@@ -1399,6 +1447,7 @@ static int gfar_close(struct net_device *dev)
napi_disable(&priv->napi);
+ skb_queue_purge(&priv->rx_recycle);
cancel_work_sync(&priv->reset_task);
stop_gfar(dev);
@@ -1531,7 +1580,7 @@ static void gfar_reset_task(struct work_struct *work)
{
struct gfar_private *priv = container_of(work, struct gfar_private,
reset_task);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
if (dev->flags & IFF_UP) {
stop_gfar(dev);
@@ -1578,7 +1627,7 @@ static int gfar_clean_tx_ring(struct net_device *dev)
(lstatus & BD_LENGTH_MASK))
break;
- dma_unmap_single(&dev->dev,
+ dma_unmap_single(&priv->ofdev->dev,
bdp->bufPtr,
bdp->length,
DMA_TO_DEVICE);
@@ -1587,7 +1636,7 @@ static int gfar_clean_tx_ring(struct net_device *dev)
bdp = next_txbd(bdp, base, tx_ring_size);
for (i = 0; i < frags; i++) {
- dma_unmap_page(&dev->dev,
+ dma_unmap_page(&priv->ofdev->dev,
bdp->bufPtr,
bdp->length,
DMA_TO_DEVICE);
@@ -1595,7 +1644,17 @@ static int gfar_clean_tx_ring(struct net_device *dev)
bdp = next_txbd(bdp, base, tx_ring_size);
}
- dev_kfree_skb_any(skb);
+ /*
+ * If there's room in the queue (limit it to rx_buffer_size)
+ * we add this skb back into the pool, if it's the right size
+ */
+ if (skb_queue_len(&priv->rx_recycle) < priv->rx_ring_size &&
+ skb_recycle_check(skb, priv->rx_buffer_size +
+ RXBUF_ALIGNMENT))
+ __skb_queue_head(&priv->rx_recycle, skb);
+ else
+ dev_kfree_skb_any(skb);
+
priv->tx_skbuff[skb_dirtytx] = NULL;
skb_dirtytx = (skb_dirtytx + 1) &
@@ -1626,9 +1685,9 @@ static void gfar_schedule_cleanup(struct net_device *dev)
spin_lock_irqsave(&priv->txlock, flags);
spin_lock(&priv->rxlock);
- if (netif_rx_schedule_prep(&priv->napi)) {
+ if (napi_schedule_prep(&priv->napi)) {
gfar_write(&priv->regs->imask, IMASK_RTX_DISABLED);
- __netif_rx_schedule(&priv->napi);
+ __napi_schedule(&priv->napi);
} else {
/*
* Clear IEVENT, so interrupts aren't called again
@@ -1654,7 +1713,7 @@ static void gfar_new_rxbdp(struct net_device *dev, struct rxbd8 *bdp,
struct gfar_private *priv = netdev_priv(dev);
u32 lstatus;
- bdp->bufPtr = dma_map_single(&dev->dev, skb->data,
+ bdp->bufPtr = dma_map_single(&priv->ofdev->dev, skb->data,
priv->rx_buffer_size, DMA_FROM_DEVICE);
lstatus = BD_LFLAG(RXBD_EMPTY | RXBD_INTERRUPT);
@@ -1674,8 +1733,10 @@ struct sk_buff * gfar_new_skb(struct net_device *dev)
struct gfar_private *priv = netdev_priv(dev);
struct sk_buff *skb = NULL;
- /* We have to allocate the skb, so keep trying till we succeed */
- skb = netdev_alloc_skb(dev, priv->rx_buffer_size + RXBUF_ALIGNMENT);
+ skb = __skb_dequeue(&priv->rx_recycle);
+ if (!skb)
+ skb = netdev_alloc_skb(dev,
+ priv->rx_buffer_size + RXBUF_ALIGNMENT);
if (!skb)
return NULL;
@@ -1812,7 +1873,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
skb = priv->rx_skbuff[priv->skb_currx];
- dma_unmap_single(&priv->dev->dev, bdp->bufPtr,
+ dma_unmap_single(&priv->ofdev->dev, bdp->bufPtr,
priv->rx_buffer_size, DMA_FROM_DEVICE);
/* We drop the frame if we failed to allocate a new buffer */
@@ -1823,7 +1884,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
if (unlikely(!newskb))
newskb = skb;
else if (skb)
- dev_kfree_skb_any(skb);
+ __skb_queue_head(&priv->rx_recycle, skb);
} else {
/* Increment the number of packets */
dev->stats.rx_packets++;
@@ -1835,6 +1896,8 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
skb_put(skb, pkt_len);
dev->stats.rx_bytes += pkt_len;
+ if (in_irq() || irqs_disabled())
+ printk("Interrupt problem!\n");
gfar_process_frame(dev, skb, amount_pull);
} else {
@@ -1870,7 +1933,7 @@ int gfar_clean_rx_ring(struct net_device *dev, int rx_work_limit)
static int gfar_poll(struct napi_struct *napi, int budget)
{
struct gfar_private *priv = container_of(napi, struct gfar_private, napi);
- struct net_device *dev = priv->dev;
+ struct net_device *dev = priv->ndev;
int tx_cleaned = 0;
int rx_cleaned = 0;
unsigned long flags;
@@ -1891,7 +1954,7 @@ static int gfar_poll(struct napi_struct *napi, int budget)
return budget;
if (rx_cleaned < budget) {
- netif_rx_complete(napi);
+ napi_complete(napi);
/* Clear the halt bit in RSTAT */
gfar_write(&priv->regs->rstat, RSTAT_CLEAR_RHALT);
@@ -2308,23 +2371,12 @@ static struct of_platform_driver gfar_driver = {
static int __init gfar_init(void)
{
- int err = gfar_mdio_init();
-
- if (err)
- return err;
-
- err = of_register_platform_driver(&gfar_driver);
-
- if (err)
- gfar_mdio_exit();
-
- return err;
+ return of_register_platform_driver(&gfar_driver);
}
static void __exit gfar_exit(void)
{
of_unregister_platform_driver(&gfar_driver);
- gfar_mdio_exit();
}
module_init(gfar_init);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.