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path: root/drivers/net/skge.c
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Diffstat (limited to 'drivers/net/skge.c')
-rw-r--r--drivers/net/skge.c82
1 files changed, 28 insertions, 54 deletions
diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 8a321be24835..34a4b87819bd 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -91,7 +91,7 @@ MODULE_DEVICE_TABLE(pci, skge_id_table);
static int skge_up(struct net_device *dev);
static int skge_down(struct net_device *dev);
static void skge_phy_reset(struct skge_port *skge);
-static void skge_tx_clean(struct skge_port *skge);
+static void skge_tx_clean(struct net_device *dev);
static int xm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static int gm_phy_write(struct skge_hw *hw, int port, u16 reg, u16 val);
static void genesis_get_stats(struct skge_port *skge, u64 *data);
@@ -105,6 +105,7 @@ static const int txqaddr[] = { Q_XA1, Q_XA2 };
static const int rxqaddr[] = { Q_R1, Q_R2 };
static const u32 rxirqmask[] = { IS_R1_F, IS_R2_F };
static const u32 txirqmask[] = { IS_XA1_F, IS_XA2_F };
+static const u32 irqmask[] = { IS_R1_F|IS_XA1_F, IS_R2_F|IS_XA2_F };
static int skge_get_regs_len(struct net_device *dev)
{
@@ -2283,7 +2284,7 @@ static int skge_down(struct net_device *dev)
skge_led(skge, LED_MODE_OFF);
netif_poll_disable(dev);
- skge_tx_clean(skge);
+ skge_tx_clean(dev);
skge_rx_clean(skge);
kfree(skge->rx_ring.start);
@@ -2308,25 +2309,12 @@ static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
int i;
u32 control, len;
u64 map;
- unsigned long flags;
if (skb_padto(skb, ETH_ZLEN))
return NETDEV_TX_OK;
- if (!spin_trylock_irqsave(&skge->tx_lock, flags))
- /* Collision - tell upper layer to requeue */
- return NETDEV_TX_LOCKED;
-
- if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1)) {
- if (!netif_queue_stopped(dev)) {
- netif_stop_queue(dev);
-
- printk(KERN_WARNING PFX "%s: ring full when queue awake!\n",
- dev->name);
- }
- spin_unlock_irqrestore(&skge->tx_lock, flags);
+ if (unlikely(skge_avail(&skge->tx_ring) < skb_shinfo(skb)->nr_frags + 1))
return NETDEV_TX_BUSY;
- }
e = skge->tx_ring.to_use;
td = e->desc;
@@ -2401,8 +2389,6 @@ static int skge_xmit_frame(struct sk_buff *skb, struct net_device *dev)
netif_stop_queue(dev);
}
- spin_unlock_irqrestore(&skge->tx_lock, flags);
-
dev->trans_start = jiffies;
return NETDEV_TX_OK;
@@ -2432,18 +2418,18 @@ static void skge_tx_free(struct skge_port *skge, struct skge_element *e,
printk(KERN_DEBUG PFX "%s: tx done slot %td\n",
skge->netdev->name, e - skge->tx_ring.start);
- dev_kfree_skb_any(e->skb);
+ dev_kfree_skb(e->skb);
}
e->skb = NULL;
}
/* Free all buffers in transmit ring */
-static void skge_tx_clean(struct skge_port *skge)
+static void skge_tx_clean(struct net_device *dev)
{
+ struct skge_port *skge = netdev_priv(dev);
struct skge_element *e;
- unsigned long flags;
- spin_lock_irqsave(&skge->tx_lock, flags);
+ netif_tx_lock_bh(dev);
for (e = skge->tx_ring.to_clean; e != skge->tx_ring.to_use; e = e->next) {
struct skge_tx_desc *td = e->desc;
skge_tx_free(skge, e, td->control);
@@ -2451,8 +2437,8 @@ static void skge_tx_clean(struct skge_port *skge)
}
skge->tx_ring.to_clean = e;
- netif_wake_queue(skge->netdev);
- spin_unlock_irqrestore(&skge->tx_lock, flags);
+ netif_wake_queue(dev);
+ netif_tx_unlock_bh(dev);
}
static void skge_tx_timeout(struct net_device *dev)
@@ -2463,7 +2449,7 @@ static void skge_tx_timeout(struct net_device *dev)
printk(KERN_DEBUG PFX "%s: tx timeout\n", dev->name);
skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_STOP);
- skge_tx_clean(skge);
+ skge_tx_clean(dev);
}
static int skge_change_mtu(struct net_device *dev, int new_mtu)
@@ -2679,15 +2665,15 @@ resubmit:
}
/* Free all buffers in Tx ring which are no longer owned by device */
-static void skge_txirq(struct net_device *dev)
+static void skge_tx_done(struct net_device *dev)
{
struct skge_port *skge = netdev_priv(dev);
struct skge_ring *ring = &skge->tx_ring;
struct skge_element *e;
- rmb();
+ skge_write8(skge->hw, Q_ADDR(txqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
- spin_lock(&skge->tx_lock);
+ netif_tx_lock(dev);
for (e = ring->to_clean; e != ring->to_use; e = e->next) {
struct skge_tx_desc *td = e->desc;
@@ -2698,11 +2684,10 @@ static void skge_txirq(struct net_device *dev)
}
skge->tx_ring.to_clean = e;
- if (netif_queue_stopped(skge->netdev)
- && skge_avail(&skge->tx_ring) > TX_LOW_WATER)
- netif_wake_queue(skge->netdev);
+ if (skge_avail(&skge->tx_ring) > TX_LOW_WATER)
+ netif_wake_queue(dev);
- spin_unlock(&skge->tx_lock);
+ netif_tx_unlock(dev);
}
static int skge_poll(struct net_device *dev, int *budget)
@@ -2714,6 +2699,10 @@ static int skge_poll(struct net_device *dev, int *budget)
int to_do = min(dev->quota, *budget);
int work_done = 0;
+ skge_tx_done(dev);
+
+ skge_write8(hw, Q_ADDR(rxqaddr[skge->port], Q_CSR), CSR_IRQ_CL_F);
+
for (e = ring->to_clean; prefetch(e->next), work_done < to_do; e = e->next) {
struct skge_rx_desc *rd = e->desc;
struct sk_buff *skb;
@@ -2744,10 +2733,9 @@ static int skge_poll(struct net_device *dev, int *budget)
if (work_done >= to_do)
return 1; /* not done */
- netif_rx_complete(dev);
-
spin_lock_irq(&hw->hw_lock);
- hw->intr_mask |= rxirqmask[skge->port];
+ __netif_rx_complete(dev);
+ hw->intr_mask |= irqmask[skge->port];
skge_write32(hw, B0_IMSK, hw->intr_mask);
skge_read32(hw, B0_IMSK);
spin_unlock_irq(&hw->hw_lock);
@@ -2906,14 +2894,8 @@ static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs)
schedule_work(&hw->phy_work);
}
- if (status & IS_XA1_F) {
- skge_write8(hw, Q_ADDR(Q_XA1, Q_CSR), CSR_IRQ_CL_F);
- skge_txirq(hw->dev[0]);
- }
-
- if (status & IS_R1_F) {
- skge_write8(hw, Q_ADDR(Q_R1, Q_CSR), CSR_IRQ_CL_F);
- hw->intr_mask &= ~IS_R1_F;
+ if (status & (IS_XA1_F|IS_R1_F)) {
+ hw->intr_mask &= ~(IS_XA1_F|IS_R1_F);
netif_rx_schedule(hw->dev[0]);
}
@@ -2932,14 +2914,8 @@ static irqreturn_t skge_intr(int irq, void *dev_id, struct pt_regs *regs)
skge_mac_intr(hw, 0);
if (hw->dev[1]) {
- if (status & IS_XA2_F) {
- skge_write8(hw, Q_ADDR(Q_XA2, Q_CSR), CSR_IRQ_CL_F);
- skge_txirq(hw->dev[1]);
- }
-
- if (status & IS_R2_F) {
- skge_write8(hw, Q_ADDR(Q_R2, Q_CSR), CSR_IRQ_CL_F);
- hw->intr_mask &= ~IS_R2_F;
+ if (status & (IS_XA2_F|IS_R2_F)) {
+ hw->intr_mask &= ~(IS_XA2_F|IS_R2_F);
netif_rx_schedule(hw->dev[1]);
}
@@ -3228,7 +3204,7 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port,
dev->poll_controller = skge_netpoll;
#endif
dev->irq = hw->pdev->irq;
- dev->features = NETIF_F_LLTX;
+
if (highmem)
dev->features |= NETIF_F_HIGHDMA;
@@ -3250,8 +3226,6 @@ static struct net_device *skge_devinit(struct skge_hw *hw, int port,
skge->port = port;
- spin_lock_init(&skge->tx_lock);
-
if (hw->chip_id != CHIP_ID_GENESIS) {
dev->features |= NETIF_F_IP_CSUM | NETIF_F_SG;
skge->rx_csum = 1;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.