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-rw-r--r--target/linux/ramips/files/drivers/net/ramips.c120
1 files changed, 66 insertions, 54 deletions
diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c
index f9ce27241d..23a3fb6f03 100644
--- a/target/linux/ramips/files/drivers/net/ramips.c
+++ b/target/linux/ramips/files/drivers/net/ramips.c
@@ -83,12 +83,12 @@ ramips_alloc_dma(struct net_device *dev)
/* setup tx ring */
priv->tx = dma_alloc_coherent(NULL,
- NUM_TX_DESC * sizeof(struct ramips_tx_dma), &priv->phy_tx, GFP_ATOMIC);
+ NUM_TX_DESC * sizeof(struct ramips_tx_dma),
+ &priv->phy_tx, GFP_ATOMIC);
if (!priv->tx)
goto err_cleanup;
- for(i = 0; i < NUM_TX_DESC; i++)
- {
+ for (i = 0; i < NUM_TX_DESC; i++) {
memset(&priv->tx[i], 0, sizeof(struct ramips_tx_dma));
priv->tx[i].txd2 |= TX_DMA_LSO | TX_DMA_DONE;
priv->tx[i].txd4 &= (TX_DMA_QN_MASK | TX_DMA_PN_MASK);
@@ -97,22 +97,23 @@ ramips_alloc_dma(struct net_device *dev)
/* setup rx ring */
priv->rx = dma_alloc_coherent(NULL,
- NUM_RX_DESC * sizeof(struct ramips_rx_dma), &priv->phy_rx, GFP_ATOMIC);
+ NUM_RX_DESC * sizeof(struct ramips_rx_dma),
+ &priv->phy_rx, GFP_ATOMIC);
if (!priv->rx)
goto err_cleanup;
memset(priv->rx, 0, sizeof(struct ramips_rx_dma) * NUM_RX_DESC);
- for(i = 0; i < NUM_RX_DESC; i++)
- {
+ for (i = 0; i < NUM_RX_DESC; i++) {
struct sk_buff *new_skb = dev_alloc_skb(MAX_RX_LENGTH + 2);
if (!new_skb)
goto err_cleanup;
skb_reserve(new_skb, 2);
- priv->rx[i].rxd1 =
- dma_map_single(NULL, skb_put(new_skb, 2), MAX_RX_LENGTH + 2,
- DMA_FROM_DEVICE);
+ priv->rx[i].rxd1 = dma_map_single(NULL,
+ skb_put(new_skb, 2),
+ MAX_RX_LENGTH + 2,
+ DMA_FROM_DEVICE);
priv->rx[i].rxd2 |= RX_DMA_LSO;
priv->rx_skb[i] = new_skb;
}
@@ -141,7 +142,7 @@ ramips_setup_dma(struct net_device *dev)
}
static int
-ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
+ramips_eth_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct raeth_priv *priv = netdev_priv(dev);
unsigned long tx;
@@ -149,32 +150,34 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
unsigned int mapped_addr;
unsigned long flags;
- if(priv->plat->min_pkt_len)
- {
- if(skb->len < priv->plat->min_pkt_len)
- {
- if(skb_padto(skb, priv->plat->min_pkt_len))
- {
- printk(KERN_ERR "ramips_eth: skb_padto failed\n");
- kfree_skb(skb);
- return 0;
- }
- skb_put(skb, priv->plat->min_pkt_len - skb->len);
- }
+ if (priv->plat->min_pkt_len) {
+ if (skb->len < priv->plat->min_pkt_len) {
+ if (skb_padto(skb, priv->plat->min_pkt_len)) {
+ printk(KERN_ERR
+ "ramips_eth: skb_padto failed\n");
+ kfree_skb(skb);
+ return 0;
+ }
+ skb_put(skb, priv->plat->min_pkt_len - skb->len);
+ }
}
+
dev->trans_start = jiffies;
- mapped_addr = (unsigned int)dma_map_single(NULL, skb->data, skb->len,
- DMA_TO_DEVICE);
+ mapped_addr = (unsigned int) dma_map_single(NULL, skb->data, skb->len,
+ DMA_TO_DEVICE);
dma_sync_single_for_device(NULL, mapped_addr, skb->len, DMA_TO_DEVICE);
spin_lock_irqsave(&priv->page_lock, flags);
tx = ramips_fe_rr(RAMIPS_TX_CTX_IDX0);
- if(tx == NUM_TX_DESC - 1)
+ if (tx == NUM_TX_DESC - 1)
tx_next = 0;
else
tx_next = tx + 1;
- if((priv->tx_skb[tx]) || (priv->tx_skb[tx_next]) ||
- !(priv->tx[tx].txd2 & TX_DMA_DONE) || !(priv->tx[tx_next].txd2 & TX_DMA_DONE))
+
+ if ((priv->tx_skb[tx]) || (priv->tx_skb[tx_next]) ||
+ !(priv->tx[tx].txd2 & TX_DMA_DONE) ||
+ !(priv->tx[tx_next].txd2 & TX_DMA_DONE))
goto out;
+
priv->tx[tx].txd1 = mapped_addr;
priv->tx[tx].txd2 &= ~(TX_DMA_PLEN0_MASK | TX_DMA_DONE);
priv->tx[tx].txd2 |= TX_DMA_PLEN0(skb->len);
@@ -185,7 +188,8 @@ ramips_eth_hard_start_xmit(struct sk_buff* skb, struct net_device *dev)
ramips_fe_wr((tx + 1) % NUM_TX_DESC, RAMIPS_TX_CTX_IDX0);
spin_unlock_irqrestore(&priv->page_lock, flags);
return NETDEV_TX_OK;
-out:
+
+ out:
spin_unlock_irqrestore(&priv->page_lock, flags);
dev->stats.tx_dropped++;
kfree_skb(skb);
@@ -195,17 +199,16 @@ out:
static void
ramips_eth_rx_hw(unsigned long ptr)
{
- struct net_device *dev = (struct net_device*)ptr;
+ struct net_device *dev = (struct net_device *) ptr;
struct raeth_priv *priv = netdev_priv(dev);
int rx;
int max_rx = 16;
- while(max_rx)
- {
+ while (max_rx) {
struct sk_buff *rx_skb, *new_skb;
rx = (ramips_fe_rr(RAMIPS_RX_CALC_IDX0) + 1) % NUM_RX_DESC;
- if(!(priv->rx[rx].rxd2 & RX_DMA_DONE))
+ if (!(priv->rx[rx].rxd2 & RX_DMA_DONE))
break;
max_rx--;
@@ -222,18 +225,20 @@ ramips_eth_rx_hw(unsigned long ptr)
priv->rx_skb[rx] = new_skb;
BUG_ON(!new_skb);
skb_reserve(new_skb, 2);
- priv->rx[rx].rxd1 =
- dma_map_single(NULL, new_skb->data, MAX_RX_LENGTH + 2,
- DMA_FROM_DEVICE);
+ priv->rx[rx].rxd1 = dma_map_single(NULL,
+ new_skb->data,
+ MAX_RX_LENGTH + 2,
+ DMA_FROM_DEVICE);
priv->rx[rx].rxd2 &= ~RX_DMA_DONE;
wmb();
ramips_fe_wr(rx, RAMIPS_RX_CALC_IDX0);
}
- if(max_rx == 0)
+
+ if (max_rx == 0)
tasklet_schedule(&priv->rx_tasklet);
else
ramips_fe_wr(ramips_fe_rr(RAMIPS_FE_INT_ENABLE) | RAMIPS_RX_DLY_INT,
- RAMIPS_FE_INT_ENABLE);
+ RAMIPS_FE_INT_ENABLE);
}
static void
@@ -242,30 +247,31 @@ ramips_eth_tx_housekeeping(unsigned long ptr)
struct net_device *dev = (struct net_device*)ptr;
struct raeth_priv *priv = netdev_priv(dev);
- while((priv->tx[priv->skb_free_idx].txd2 & TX_DMA_DONE) &&
- (priv->tx_skb[priv->skb_free_idx]))
- {
- dev_kfree_skb_irq((struct sk_buff*)priv->tx_skb[priv->skb_free_idx]);
+ while ((priv->tx[priv->skb_free_idx].txd2 & TX_DMA_DONE) &&
+ (priv->tx_skb[priv->skb_free_idx])) {
+ dev_kfree_skb_irq((struct sk_buff *) priv->tx_skb[priv->skb_free_idx]);
priv->tx_skb[priv->skb_free_idx] = 0;
priv->skb_free_idx++;
- if(priv->skb_free_idx >= NUM_TX_DESC)
+ if (priv->skb_free_idx >= NUM_TX_DESC)
priv->skb_free_idx = 0;
}
+
ramips_fe_wr(ramips_fe_rr(RAMIPS_FE_INT_ENABLE) | RAMIPS_TX_DLY_INT,
- RAMIPS_FE_INT_ENABLE);
+ RAMIPS_FE_INT_ENABLE);
}
static int
ramips_eth_set_mac_addr(struct net_device *dev, void *priv)
{
- unsigned char *mac = (unsigned char*)priv;
+ unsigned char *mac = (unsigned char *) priv;
- if(netif_running(dev))
+ if (netif_running(dev))
return -EBUSY;
+
memcpy(dev->dev_addr, ((struct sockaddr*)priv)->sa_data, dev->addr_len);
ramips_fe_wr((mac[0] << 8) | mac[1], RAMIPS_GDMA1_MAC_ADRH);
ramips_fe_wr(RAMIPS_GDMA1_MAC_ADRL,
- (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5]);
+ (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5]);
return 0;
}
@@ -285,14 +291,15 @@ ramips_eth_irq(int irq, void *dev)
ramips_fe_wr(0xFFFFFFFF, RAMIPS_FE_INT_STATUS);
- if(fe_int & RAMIPS_RX_DLY_INT)
- {
+ if (fe_int & RAMIPS_RX_DLY_INT) {
ramips_fe_wr(ramips_fe_rr(RAMIPS_FE_INT_ENABLE) & ~(RAMIPS_RX_DLY_INT),
- RAMIPS_FE_INT_ENABLE);
+ RAMIPS_FE_INT_ENABLE);
tasklet_schedule(&priv->rx_tasklet);
}
- if(fe_int & RAMIPS_TX_DLY_INT)
+
+ if (fe_int & RAMIPS_TX_DLY_INT)
ramips_eth_tx_housekeeping((unsigned long)dev);
+
return IRQ_HANDLED;
}
@@ -320,9 +327,11 @@ ramips_eth_open(struct net_device *dev)
~(RAMIPS_US_CYC_CNT_MASK << RAMIPS_US_CYC_CNT_SHIFT)) |
((rt305x_sys_freq / RAMIPS_US_CYC_CNT_DIVISOR) << RAMIPS_US_CYC_CNT_SHIFT),
RAMIPS_FE_GLO_CFG);
+
tasklet_init(&priv->tx_housekeeping_tasklet, ramips_eth_tx_housekeeping,
- (unsigned long)dev);
+ (unsigned long)dev);
tasklet_init(&priv->rx_tasklet, ramips_eth_rx_hw, (unsigned long)dev);
+
ramips_fe_wr(RAMIPS_DELAY_INIT, RAMIPS_DLY_INT_CFG);
ramips_fe_wr(RAMIPS_TX_DLY_INT | RAMIPS_RX_DLY_INT, RAMIPS_FE_INT_ENABLE);
ramips_fe_wr(ramips_fe_rr(RAMIPS_GDMA1_FWD_CFG) &
@@ -334,6 +343,7 @@ ramips_eth_open(struct net_device *dev)
ramips_fe_wr(RAMIPS_PSE_FQFC_CFG_INIT, RAMIPS_PSE_FQ_CFG);
ramips_fe_wr(1, RAMIPS_FE_RST_GL);
ramips_fe_wr(0, RAMIPS_FE_RST_GL);
+
netif_start_queue(dev);
return 0;
@@ -379,6 +389,7 @@ ramips_eth_probe(struct net_device *dev)
dev->tx_timeout = ramips_eth_timeout;
dev->watchdog_timeo = TX_TIMEOUT;
spin_lock_init(&priv->page_lock);
+
return 0;
}
@@ -402,11 +413,11 @@ ramips_eth_plat_probe(struct platform_device *plat)
}
ramips_fe_base = ioremap_nocache(res->start, res->end - res->start + 1);
- if(!ramips_fe_base)
+ if (!ramips_fe_base)
return -ENOMEM;
ramips_dev = alloc_etherdev(sizeof(struct raeth_priv));
- if(!ramips_dev) {
+ if (!ramips_dev) {
dev_err(&plat->dev, "alloc_etherdev failed\n");
err = -ENOMEM;
goto err_unmap;
@@ -422,7 +433,8 @@ ramips_eth_plat_probe(struct platform_device *plat)
ramips_dev->addr_len = ETH_ALEN;
ramips_dev->base_addr = (unsigned long)ramips_fe_base;
ramips_dev->init = ramips_eth_probe;
- priv = (struct raeth_priv*)netdev_priv(ramips_dev);
+
+ priv = netdev_priv(ramips_dev);
priv->plat = data;
err = register_netdev(ramips_dev);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 07:17:49 +0000