rtl8180: use NAPI for bottom-half processing
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville
parent
4e6cbfd09c
commit
030725d2c7
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@ -99,19 +99,66 @@ void rtl8180_write_phy(struct ieee80211_hw *dev, u8 addr, u32 data)
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}
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}
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static void rtl8180_handle_rx(struct ieee80211_hw *dev)
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static void rtl8180_handle_tx(struct ieee80211_hw *dev)
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{
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struct rtl8180_priv *priv = dev->priv;
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unsigned int count = 32;
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struct rtl8180_tx_ring *ring;
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int prio;
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spin_lock(&priv->lock);
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for (prio = 3; prio >= 0; prio--) {
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ring = &priv->tx_ring[prio];
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while (skb_queue_len(&ring->queue)) {
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struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
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struct sk_buff *skb;
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struct ieee80211_tx_info *info;
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u32 flags = le32_to_cpu(entry->flags);
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if (flags & RTL818X_TX_DESC_FLAG_OWN)
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break;
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ring->idx = (ring->idx + 1) % ring->entries;
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skb = __skb_dequeue(&ring->queue);
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pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
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skb->len, PCI_DMA_TODEVICE);
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info = IEEE80211_SKB_CB(skb);
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ieee80211_tx_info_clear_status(info);
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if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
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(flags & RTL818X_TX_DESC_FLAG_TX_OK))
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info->flags |= IEEE80211_TX_STAT_ACK;
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info->status.rates[0].count = (flags & 0xFF) + 1;
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info->status.rates[1].idx = -1;
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ieee80211_tx_status(dev, skb);
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if (ring->entries - skb_queue_len(&ring->queue) == 2)
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ieee80211_wake_queue(dev, prio);
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}
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}
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spin_unlock(&priv->lock);
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}
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static int rtl8180_poll(struct ieee80211_hw *dev, int budget)
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{
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struct rtl8180_priv *priv = dev->priv;
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unsigned int count = 0;
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u8 signal, agc, sq;
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while (count--) {
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/* handle pending Tx queue cleanup */
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rtl8180_handle_tx(dev);
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while (count++ < budget) {
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struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
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struct sk_buff *skb = priv->rx_buf[priv->rx_idx];
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u32 flags = le32_to_cpu(entry->flags);
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if (flags & RTL818X_RX_DESC_FLAG_OWN)
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return;
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break;
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if (unlikely(flags & (RTL818X_RX_DESC_FLAG_DMA_FAIL |
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RTL818X_RX_DESC_FLAG_FOF |
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@ -151,7 +198,7 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
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rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
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memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
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ieee80211_rx_irqsafe(dev, skb);
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ieee80211_rx(dev, skb);
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skb = new_skb;
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priv->rx_buf[priv->rx_idx] = skb;
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@ -168,41 +215,16 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
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entry->flags |= cpu_to_le32(RTL818X_RX_DESC_FLAG_EOR);
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priv->rx_idx = (priv->rx_idx + 1) % 32;
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}
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}
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static void rtl8180_handle_tx(struct ieee80211_hw *dev, unsigned int prio)
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{
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struct rtl8180_priv *priv = dev->priv;
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struct rtl8180_tx_ring *ring = &priv->tx_ring[prio];
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if (count < budget) {
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/* disable polling */
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ieee80211_napi_complete(dev);
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while (skb_queue_len(&ring->queue)) {
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struct rtl8180_tx_desc *entry = &ring->desc[ring->idx];
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struct sk_buff *skb;
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struct ieee80211_tx_info *info;
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u32 flags = le32_to_cpu(entry->flags);
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if (flags & RTL818X_TX_DESC_FLAG_OWN)
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return;
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ring->idx = (ring->idx + 1) % ring->entries;
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skb = __skb_dequeue(&ring->queue);
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pci_unmap_single(priv->pdev, le32_to_cpu(entry->tx_buf),
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skb->len, PCI_DMA_TODEVICE);
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info = IEEE80211_SKB_CB(skb);
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ieee80211_tx_info_clear_status(info);
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if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
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(flags & RTL818X_TX_DESC_FLAG_TX_OK))
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info->flags |= IEEE80211_TX_STAT_ACK;
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info->status.rates[0].count = (flags & 0xFF) + 1;
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info->status.rates[1].idx = -1;
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ieee80211_tx_status_irqsafe(dev, skb);
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if (ring->entries - skb_queue_len(&ring->queue) == 2)
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ieee80211_wake_queue(dev, prio);
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/* enable interrupts */
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rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0xFFFF);
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}
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return count;
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}
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static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
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@ -211,31 +233,17 @@ static irqreturn_t rtl8180_interrupt(int irq, void *dev_id)
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struct rtl8180_priv *priv = dev->priv;
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u16 reg;
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spin_lock(&priv->lock);
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reg = rtl818x_ioread16(priv, &priv->map->INT_STATUS);
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if (unlikely(reg == 0xFFFF)) {
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spin_unlock(&priv->lock);
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if (unlikely(reg == 0xFFFF))
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return IRQ_HANDLED;
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}
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rtl818x_iowrite16(priv, &priv->map->INT_STATUS, reg);
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if (reg & (RTL818X_INT_TXB_OK | RTL818X_INT_TXB_ERR))
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rtl8180_handle_tx(dev, 3);
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/* disable interrupts */
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rtl818x_iowrite16(priv, &priv->map->INT_MASK, 0);
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if (reg & (RTL818X_INT_TXH_OK | RTL818X_INT_TXH_ERR))
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rtl8180_handle_tx(dev, 2);
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if (reg & (RTL818X_INT_TXN_OK | RTL818X_INT_TXN_ERR))
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rtl8180_handle_tx(dev, 1);
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if (reg & (RTL818X_INT_TXL_OK | RTL818X_INT_TXL_ERR))
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rtl8180_handle_tx(dev, 0);
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if (reg & (RTL818X_INT_RX_OK | RTL818X_INT_RX_ERR))
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rtl8180_handle_rx(dev);
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spin_unlock(&priv->lock);
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/* enable polling */
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ieee80211_napi_schedule(dev);
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return IRQ_HANDLED;
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}
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@ -247,7 +255,6 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
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struct rtl8180_priv *priv = dev->priv;
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struct rtl8180_tx_ring *ring;
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struct rtl8180_tx_desc *entry;
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unsigned long flags;
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unsigned int idx, prio;
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dma_addr_t mapping;
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u32 tx_flags;
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@ -294,7 +301,7 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
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plcp_len |= 1 << 15;
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}
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spin_lock_irqsave(&priv->lock, flags);
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spin_lock(&priv->lock);
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if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
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if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
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@ -318,7 +325,7 @@ static int rtl8180_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
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if (ring->entries - skb_queue_len(&ring->queue) < 2)
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ieee80211_stop_queue(dev, prio);
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spin_unlock_irqrestore(&priv->lock, flags);
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spin_unlock(&priv->lock);
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rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, (1 << (prio + 4)));
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@ -861,6 +868,7 @@ static const struct ieee80211_ops rtl8180_ops = {
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.prepare_multicast = rtl8180_prepare_multicast,
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.configure_filter = rtl8180_configure_filter,
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.get_tsf = rtl8180_get_tsf,
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.napi_poll = rtl8180_poll,
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};
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static void rtl8180_eeprom_register_read(struct eeprom_93cx6 *eeprom)
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@ -992,6 +1000,8 @@ static int __devinit rtl8180_probe(struct pci_dev *pdev,
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dev->queues = 1;
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dev->max_signal = 65;
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dev->napi_weight = 64;
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reg = rtl818x_ioread32(priv, &priv->map->TX_CONF);
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reg &= RTL818X_TX_CONF_HWVER_MASK;
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switch (reg) {
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