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[ar71xx] ag71xx driver: improve poll routine
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13525 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -37,7 +37,7 @@
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#define ETH_FCS_LEN 4
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#define AG71XX_DRV_NAME "ag71xx"
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#define AG71XX_DRV_VERSION "0.5.8"
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#define AG71XX_DRV_VERSION "0.5.9"
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#define AG71XX_NAPI_TX 1
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@ -624,6 +624,8 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
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break;
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}
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ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
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skb = ring->buf[i].skb;
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pktlen = ag71xx_desc_pktlen(desc);
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pktlen -= ETH_FCS_LEN;
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@ -643,8 +645,6 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
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ring->buf[i].skb = NULL;
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done++;
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ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
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ring->curr++;
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if ((ring->curr - ring->dirty) > (AG71XX_RX_RING_SIZE / 4))
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ag71xx_ring_rx_refill(ag);
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@ -679,10 +679,16 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
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/* TODO: add OOM handler */
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status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
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status &= AG71XX_INT_POLL;
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status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
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if (unlikely(status & RX_STATUS_OF)) {
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ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
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dev->stats.rx_fifo_errors++;
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if ((done < limit) && (!status)) {
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/* restart RX */
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ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
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}
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if ((done < limit) && ((status & RX_STATUS_PR) == 0)) {
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DBG("%s: disable polling mode, done=%d, status=%x\n",
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dev->name, done, status);
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@ -695,17 +701,6 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
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return 0;
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}
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if (status & AG71XX_INT_RX_OF) {
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if (netif_msg_rx_err(ag))
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printk(KERN_ALERT "%s: rx owerflow, restarting dma\n",
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dev->name);
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/* ack interrupt */
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ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
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/* restart RX */
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ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
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}
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DBG("%s: stay in polling mode, done=%d, status=%x\n",
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dev->name, done, status);
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return 1;
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