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authorFlorian Fainelli <florian.fainelli@telecomint.eu>2008-07-13 14:35:32 +0200
committerJeff Garzik <jgarzik@redhat.com>2008-07-22 19:59:46 -0400
commite24ddf3aa8a2c4c14df1136e762c315c436488e7 (patch)
treea55450bc8f3ce7250ceb9dca2875239e438ffcdb
parent31718dedf62fd62e807001138ab5ac76e9b11064 (diff)
r6040: handle RX fifo full and no descriptor interrupts
This patch allows the MAC to handle the RX FIFO full and no descriptor available interrupts. While we are at it replace the TX interrupt with its corresponding definition. Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/net/r6040.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c
index b68781d3592..99dbe4633fc 100644
--- a/drivers/net/r6040.c
+++ b/drivers/net/r6040.c
@@ -163,9 +163,9 @@ MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RDC R6040 NAPI PCI FastEthernet driver");
/* RX and TX interrupts that we handle */
-#define RX_INT (RX_FINISH)
-#define TX_INT (TX_FINISH)
-#define INT_MASK (RX_INT | TX_INT)
+#define RX_INTS (RX_FIFO_FULL | RX_NO_DESC | RX_FINISH)
+#define TX_INTS (TX_FINISH)
+#define INT_MASK (RX_INTS | TX_INTS)
struct r6040_descriptor {
u16 status, len; /* 0-3 */
@@ -671,7 +671,7 @@ static int r6040_poll(struct napi_struct *napi, int budget)
if (work_done < budget) {
netif_rx_complete(dev, napi);
/* Enable RX interrupt */
- iowrite16(ioread16(ioaddr + MIER) | RX_INT, ioaddr + MIER);
+ iowrite16(ioread16(ioaddr + MIER) | RX_INTS, ioaddr + MIER);
}
return work_done;
}
@@ -693,14 +693,22 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
return IRQ_NONE;
/* RX interrupt request */
- if (status & 0x01) {
+ if (status & RX_INTS) {
+ if (status & RX_NO_DESC) {
+ /* RX descriptor unavailable */
+ dev->stats.rx_dropped++;
+ dev->stats.rx_missed_errors++;
+ }
+ if (status & RX_FIFO_FULL)
+ dev->stats.rx_fifo_errors++;
+
/* Mask off RX interrupt */
- iowrite16(ioread16(ioaddr + MIER) & ~RX_INT, ioaddr + MIER);
+ iowrite16(ioread16(ioaddr + MIER) & ~RX_INTS, ioaddr + MIER);
netif_rx_schedule(dev, &lp->napi);
}
/* TX interrupt request */
- if (status & 0x10)
+ if (status & TX_INTS)
r6040_tx(dev);
return IRQ_HANDLED;