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path: root/drivers/net/stmmac/stmmac_main.c
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Diffstat (limited to 'drivers/net/stmmac/stmmac_main.c')
-rw-r--r--drivers/net/stmmac/stmmac_main.c55
1 files changed, 30 insertions, 25 deletions
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index c2f14dc9ba2..508fba8fa07 100644
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -416,13 +416,8 @@ static void init_dma_desc_rings(struct net_device *dev)
unsigned int txsize = priv->dma_tx_size;
unsigned int rxsize = priv->dma_rx_size;
unsigned int bfsize = priv->dma_buf_sz;
- int buff2_needed = 0;
- int dis_ic = 0;
+ int buff2_needed = 0, dis_ic = 0;
-#ifdef CONFIG_STMMAC_TIMER
- /* Using Timers disable interrupts on completion for the reception */
- dis_ic = 1;
-#endif
/* Set the Buffer size according to the MTU;
* indeed, in case of jumbo we need to bump-up the buffer sizes.
*/
@@ -437,6 +432,11 @@ static void init_dma_desc_rings(struct net_device *dev)
else
bfsize = DMA_BUFFER_SIZE;
+#ifdef CONFIG_STMMAC_TIMER
+ /* Disable interrupts on completion for the reception if timer is on */
+ if (likely(priv->tm->enable))
+ dis_ic = 1;
+#endif
/* If the MTU exceeds 8k so use the second buffer in the chain */
if (bfsize >= BUF_SIZE_8KiB)
buff2_needed = 1;
@@ -809,20 +809,22 @@ static void stmmac_tx(struct stmmac_priv *priv)
static inline void stmmac_enable_irq(struct stmmac_priv *priv)
{
-#ifndef CONFIG_STMMAC_TIMER
- writel(DMA_INTR_DEFAULT_MASK, priv->dev->base_addr + DMA_INTR_ENA);
-#else
- priv->tm->timer_start(tmrate);
+#ifdef CONFIG_STMMAC_TIMER
+ if (likely(priv->tm->enable))
+ priv->tm->timer_start(tmrate);
+ else
#endif
+ writel(DMA_INTR_DEFAULT_MASK, priv->dev->base_addr + DMA_INTR_ENA);
}
static inline void stmmac_disable_irq(struct stmmac_priv *priv)
{
-#ifndef CONFIG_STMMAC_TIMER
- writel(0, priv->dev->base_addr + DMA_INTR_ENA);
-#else
- priv->tm->timer_stop();
+#ifdef CONFIG_STMMAC_TIMER
+ if (likely(priv->tm->enable))
+ priv->tm->timer_stop();
+ else
#endif
+ writel(0, priv->dev->base_addr + DMA_INTR_ENA);
}
static int stmmac_has_work(struct stmmac_priv *priv)
@@ -920,8 +922,7 @@ static void stmmac_dma_interrupt(struct net_device *dev)
DBG(intr, INFO, "CSR5[15] DMA ABNORMAL IRQ: ");
if (unlikely(intr_status & DMA_STATUS_UNF)) {
DBG(intr, INFO, "transmit underflow\n");
- if (unlikely(tc != SF_DMA_MODE)
- && (tc <= 256)) {
+ if (unlikely(tc != SF_DMA_MODE) && (tc <= 256)) {
/* Try to bump up the threshold */
tc += 64;
priv->mac_type->ops->dma_mode(ioaddr, tc,
@@ -1022,7 +1023,7 @@ static int stmmac_open(struct net_device *dev)
}
/* Request the IRQ lines */
- ret = request_irq(dev->irq, &stmmac_interrupt,
+ ret = request_irq(dev->irq, stmmac_interrupt,
IRQF_SHARED, dev->name, dev);
if (unlikely(ret < 0)) {
pr_err("%s: ERROR: allocating the IRQ %d (error: %d)\n",
@@ -1031,22 +1032,23 @@ static int stmmac_open(struct net_device *dev)
}
#ifdef CONFIG_STMMAC_TIMER
- priv->tm = kmalloc(sizeof(struct stmmac_timer *), GFP_KERNEL);
+ priv->tm = kzalloc(sizeof(struct stmmac_timer *), GFP_KERNEL);
if (unlikely(priv->tm == NULL)) {
pr_err("%s: ERROR: timer memory alloc failed \n", __func__);
return -ENOMEM;
}
priv->tm->freq = tmrate;
- /* Test if the HW timer can be actually used.
- * In case of failure continue with no timer. */
+ /* Test if the external timer can be actually used.
+ * In case of failure continue without timer. */
if (unlikely((stmmac_open_ext_timer(dev, priv->tm)) < 0)) {
- pr_warning("stmmaceth: cannot attach the HW timer\n");
+ pr_warning("stmmaceth: cannot attach the external timer.\n");
tmrate = 0;
priv->tm->freq = 0;
priv->tm->timer_start = stmmac_no_timer_started;
priv->tm->timer_stop = stmmac_no_timer_stopped;
- }
+ } else
+ priv->tm->enable = 1;
#endif
/* Create and initialize the TX/RX descriptors chains. */
@@ -1322,9 +1324,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
/* Interrupt on completition only for the latest segment */
priv->mac_type->ops->close_tx_desc(desc);
+
#ifdef CONFIG_STMMAC_TIMER
- /* Clean IC while using timers */
- priv->mac_type->ops->clear_tx_ic(desc);
+ /* Clean IC while using timer */
+ if (likely(priv->tm->enable))
+ priv->mac_type->ops->clear_tx_ic(desc);
#endif
/* To avoid raise condition */
priv->mac_type->ops->set_tx_owner(first);
@@ -2028,7 +2032,8 @@ static int stmmac_suspend(struct platform_device *pdev, pm_message_t state)
#ifdef CONFIG_STMMAC_TIMER
priv->tm->timer_stop();
- dis_ic = 1;
+ if (likely(priv->tm->enable))
+ dis_ic = 1;
#endif
napi_disable(&priv->napi);