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path: root/drivers/net/smc911x.c
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Diffstat (limited to 'drivers/net/smc911x.c')
-rw-r--r--drivers/net/smc911x.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 8aa7460ef0e..f59c7772f34 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -155,23 +155,17 @@ static void PRINT_PKT(u_char *buf, int length)
/* this enables an interrupt in the interrupt mask register */
#define SMC_ENABLE_INT(lp, x) do { \
unsigned int __mask; \
- unsigned long __flags; \
- spin_lock_irqsave(&lp->lock, __flags); \
__mask = SMC_GET_INT_EN((lp)); \
__mask |= (x); \
SMC_SET_INT_EN((lp), __mask); \
- spin_unlock_irqrestore(&lp->lock, __flags); \
} while (0)
/* this disables an interrupt from the interrupt mask register */
#define SMC_DISABLE_INT(lp, x) do { \
unsigned int __mask; \
- unsigned long __flags; \
- spin_lock_irqsave(&lp->lock, __flags); \
__mask = SMC_GET_INT_EN((lp)); \
__mask &= ~(x); \
SMC_SET_INT_EN((lp), __mask); \
- spin_unlock_irqrestore(&lp->lock, __flags); \
} while (0)
/*
@@ -180,7 +174,7 @@ static void PRINT_PKT(u_char *buf, int length)
static void smc911x_reset(struct net_device *dev)
{
struct smc911x_local *lp = netdev_priv(dev);
- unsigned int reg, timeout=0, resets=1;
+ unsigned int reg, timeout=0, resets=1, irq_cfg;
unsigned long flags;
DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
@@ -252,7 +246,12 @@ static void smc911x_reset(struct net_device *dev)
* Deassert IRQ for 1*10us for edge type interrupts
* and drive IRQ pin push-pull
*/
- SMC_SET_IRQ_CFG(lp, (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_);
+ irq_cfg = (1 << 24) | INT_CFG_IRQ_EN_ | INT_CFG_IRQ_TYPE_;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+ if (lp->cfg.irq_polarity)
+ irq_cfg |= INT_CFG_IRQ_POL_;
+#endif
+ SMC_SET_IRQ_CFG(lp, irq_cfg);
/* clear anything saved */
if (lp->pending_tx_skb != NULL) {
@@ -274,6 +273,8 @@ static void smc911x_enable(struct net_device *dev)
DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __func__);
+ spin_lock_irqsave(&lp->lock, flags);
+
SMC_SET_MAC_ADDR(lp, dev->dev_addr);
/* Enable TX */
@@ -286,12 +287,10 @@ static void smc911x_enable(struct net_device *dev)
SMC_SET_FIFO_TSL(lp, 64);
SMC_SET_GPT_CFG(lp, GPT_CFG_TIMER_EN_ | 10000);
- spin_lock_irqsave(&lp->lock, flags);
SMC_GET_MAC_CR(lp, cr);
cr |= MAC_CR_TXEN_ | MAC_CR_HBDIS_;
SMC_SET_MAC_CR(lp, cr);
SMC_SET_TX_CFG(lp, TX_CFG_TX_ON_);
- spin_unlock_irqrestore(&lp->lock, flags);
/* Add 2 byte padding to start of packets */
SMC_SET_RX_CFG(lp, (2<<8) & RX_CFG_RXDOFF_);
@@ -300,9 +299,7 @@ static void smc911x_enable(struct net_device *dev)
if (cr & MAC_CR_RXEN_)
DBG(SMC_DEBUG_RX, "%s: Receiver already enabled\n", dev->name);
- spin_lock_irqsave(&lp->lock, flags);
SMC_SET_MAC_CR(lp, cr | MAC_CR_RXEN_);
- spin_unlock_irqrestore(&lp->lock, flags);
/* Interrupt on every received packet */
SMC_SET_FIFO_RSA(lp, 0x01);
@@ -318,6 +315,8 @@ static void smc911x_enable(struct net_device *dev)
mask|=INT_EN_RDFO_EN_;
}
SMC_ENABLE_INT(lp, mask);
+
+ spin_unlock_irqrestore(&lp->lock, flags);
}
/*
@@ -458,7 +457,6 @@ static void smc911x_hardware_send_pkt(struct net_device *dev)
struct sk_buff *skb;
unsigned int cmdA, cmdB, len;
unsigned char *buf;
- unsigned long flags;
DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n", dev->name, __func__);
BUG_ON(lp->pending_tx_skb == NULL);
@@ -503,11 +501,9 @@ static void smc911x_hardware_send_pkt(struct net_device *dev)
dev->trans_start = jiffies;
dev_kfree_skb(skb);
#endif
- spin_lock_irqsave(&lp->lock, flags);
if (!lp->tx_throttle) {
netif_wake_queue(dev);
}
- spin_unlock_irqrestore(&lp->lock, flags);
SMC_ENABLE_INT(lp, INT_EN_TDFA_EN_ | INT_EN_TSFL_EN_);
}
@@ -526,6 +522,8 @@ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
DBG(SMC_DEBUG_FUNC | SMC_DEBUG_TX, "%s: --> %s\n",
dev->name, __func__);
+ spin_lock_irqsave(&lp->lock, flags);
+
BUG_ON(lp->pending_tx_skb != NULL);
free = SMC_GET_TX_FIFO_INF(lp) & TX_FIFO_INF_TDFREE_;
@@ -535,12 +533,10 @@ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (free <= SMC911X_TX_FIFO_LOW_THRESHOLD) {
DBG(SMC_DEBUG_TX, "%s: Disabling data flow due to low FIFO space (%d)\n",
dev->name, free);
- spin_lock_irqsave(&lp->lock, flags);
/* Reenable when at least 1 packet of size MTU present */
SMC_SET_FIFO_TDA(lp, (SMC911X_TX_FIFO_LOW_THRESHOLD)/64);
lp->tx_throttle = 1;
netif_stop_queue(dev);
- spin_unlock_irqrestore(&lp->lock, flags);
}
/* Drop packets when we run out of space in TX FIFO
@@ -556,6 +552,7 @@ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
lp->pending_tx_skb = NULL;
dev->stats.tx_errors++;
dev->stats.tx_dropped++;
+ spin_unlock_irqrestore(&lp->lock, flags);
dev_kfree_skb(skb);
return 0;
}
@@ -565,7 +562,6 @@ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* If the DMA is already running then defer this packet Tx until
* the DMA IRQ starts it
*/
- spin_lock_irqsave(&lp->lock, flags);
if (lp->txdma_active) {
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Tx DMA running, deferring packet\n", dev->name);
lp->pending_tx_skb = skb;
@@ -576,11 +572,11 @@ static int smc911x_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
DBG(SMC_DEBUG_TX | SMC_DEBUG_DMA, "%s: Activating Tx DMA\n", dev->name);
lp->txdma_active = 1;
}
- spin_unlock_irqrestore(&lp->lock, flags);
}
#endif
lp->pending_tx_skb = skb;
smc911x_hardware_send_pkt(dev);
+ spin_unlock_irqrestore(&lp->lock, flags);
return 0;
}
@@ -1242,7 +1238,7 @@ smc911x_rx_dma_irq(int dma, void *data)
netif_rx(skb);
spin_lock_irqsave(&lp->lock, flags);
- pkts = (SMC_GET_RX_FIFO_INF() & RX_FIFO_INF_RXSUSED_) >> 16;
+ pkts = (SMC_GET_RX_FIFO_INF(lp) & RX_FIFO_INF_RXSUSED_) >> 16;
if (pkts != 0) {
smc911x_rcv(dev);
}else {
@@ -2054,7 +2050,7 @@ err_out:
*/
static int smc911x_drv_probe(struct platform_device *pdev)
{
- struct smc91x_platdata *pd = pdev->dev.platform_data;
+ struct smc911x_platdata *pd = pdev->dev.platform_data;
struct net_device *ndev;
struct resource *res;
struct smc911x_local *lp;
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-09 07:29:24 +0000