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ag71xx driver: improve poll routine

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SVN-Revision: 13525
This commit is contained in:
Gabor Juhos 2008-12-05 20:08:00 +00:00
parent a6be4564b7
commit fcbd66fef1
2 changed files with 12 additions and 17 deletions
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2
target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
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@ -37,7 +37,7 @@
#define ETH_FCS_LEN 4
#define AG71XX_DRV_NAME "ag71xx"
#define AG71XX_DRV_VERSION "0.5.8"
#define AG71XX_DRV_VERSION "0.5.9"
#define AG71XX_NAPI_TX 1

27
target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
View file

@ -624,6 +624,8 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
break;
}
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
skb = ring->buf[i].skb;
pktlen = ag71xx_desc_pktlen(desc);
pktlen -= ETH_FCS_LEN;
@ -643,8 +645,6 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
ring->buf[i].skb = NULL;
done++;
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
ring->curr++;
if ((ring->curr - ring->dirty) > (AG71XX_RX_RING_SIZE / 4))
ag71xx_ring_rx_refill(ag);
@ -679,10 +679,16 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
/* TODO: add OOM handler */
status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
status &= AG71XX_INT_POLL;
status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
if (unlikely(status & RX_STATUS_OF)) {
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
dev->stats.rx_fifo_errors++;
if ((done < limit) && (!status)) {
/* restart RX */
ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
}
if ((done < limit) && ((status & RX_STATUS_PR) == 0)) {
DBG("%s: disable polling mode, done=%d, status=%x\n",
dev->name, done, status);
@ -695,17 +701,6 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
return 0;
}
if (status & AG71XX_INT_RX_OF) {
if (netif_msg_rx_err(ag))
printk(KERN_ALERT "%s: rx owerflow, restarting dma\n",
dev->name);
/* ack interrupt */
ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
/* restart RX */
ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
}
DBG("%s: stay in polling mode, done=%d, status=%x\n",
dev->name, done, status);
return 1;