From e24ddf3aa8a2c4c14df1136e762c315c436488e7 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Sun, 13 Jul 2008 14:35:32 +0200 Subject: [PATCH] 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 Signed-off-by: Jeff Garzik --- drivers/net/r6040.c | 22 +++++++++++++++------- 1 file 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; -- 2.41.1