Instead of reading back the unmap address from the receive
descriptor when doing receive processing, use DECLARE_PCI_UNMAP_ADDR
and pci_unmap_addr{,set}() to keep track of these addresses.
Signed-off-by: Lennert Buytenhek <[email protected]>
---
drivers/net/wireless/mwl8k.c | 55 +++++++++++++++++++++++-------------------
1 files changed, 30 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/mwl8k.c b/drivers/net/wireless/mwl8k.c
index 703c306..96faec6 100644
--- a/drivers/net/wireless/mwl8k.c
+++ b/drivers/net/wireless/mwl8k.c
@@ -96,7 +96,10 @@ struct mwl8k_rx_queue {
struct mwl8k_rx_desc *rxd;
dma_addr_t rxd_dma;
- struct sk_buff **skb;
+ struct {
+ struct sk_buff *skb;
+ DECLARE_PCI_UNMAP_ADDR(dma)
+ } *buf;
};
struct mwl8k_tx_queue {
@@ -790,14 +793,14 @@ static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
}
memset(rxq->rxd, 0, size);
- rxq->skb = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->skb), GFP_KERNEL);
- if (rxq->skb == NULL) {
+ rxq->buf = kmalloc(MWL8K_RX_DESCS * sizeof(*rxq->buf), GFP_KERNEL);
+ if (rxq->buf == NULL) {
printk(KERN_ERR "%s: failed to alloc RX skbuff list\n",
wiphy_name(hw->wiphy));
pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
return -ENOMEM;
}
- memset(rxq->skb, 0, MWL8K_RX_DESCS * sizeof(*rxq->skb));
+ memset(rxq->buf, 0, MWL8K_RX_DESCS * sizeof(*rxq->buf));
for (i = 0; i < MWL8K_RX_DESCS; i++) {
struct mwl8k_rx_desc *rx_desc;
@@ -823,6 +826,7 @@ static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
refilled = 0;
while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
struct sk_buff *skb;
+ dma_addr_t addr;
int rx;
skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
@@ -834,12 +838,13 @@ static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
rx = rxq->tail;
rxq->tail = (rx + 1) % MWL8K_RX_DESCS;
- rxq->rxd[rx].pkt_phys_addr =
- cpu_to_le32(pci_map_single(priv->pdev, skb->data,
- MWL8K_RX_MAXSZ, DMA_FROM_DEVICE));
+ addr = pci_map_single(priv->pdev, skb->data,
+ MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
rxq->rxd[rx].pkt_len = cpu_to_le16(MWL8K_RX_MAXSZ);
- rxq->skb[rx] = skb;
+ rxq->rxd[rx].pkt_phys_addr = cpu_to_le32(addr);
+ rxq->buf[rx].skb = skb;
+ pci_unmap_addr_set(&rxq->buf[rx], dma, addr);
wmb();
rxq->rxd[rx].rx_ctrl = 0;
@@ -857,19 +862,19 @@ static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
int i;
for (i = 0; i < MWL8K_RX_DESCS; i++) {
- if (rxq->skb[i] != NULL) {
- unsigned long addr;
-
- addr = le32_to_cpu(rxq->rxd[i].pkt_phys_addr);
- pci_unmap_single(priv->pdev, addr, MWL8K_RX_MAXSZ,
- PCI_DMA_FROMDEVICE);
- kfree_skb(rxq->skb[i]);
- rxq->skb[i] = NULL;
+ if (rxq->buf[i].skb != NULL) {
+ pci_unmap_single(priv->pdev,
+ pci_unmap_addr(&rxq->buf[i], dma),
+ MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
+ pci_unmap_addr_set(&rxq->buf[i], dma, 0);
+
+ kfree_skb(rxq->buf[i].skb);
+ rxq->buf[i].skb = NULL;
}
}
- kfree(rxq->skb);
- rxq->skb = NULL;
+ kfree(rxq->buf);
+ rxq->buf = NULL;
pci_free_consistent(priv->pdev,
MWL8K_RX_DESCS * sizeof(struct mwl8k_rx_desc),
@@ -919,7 +924,6 @@ static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
struct mwl8k_rx_desc *rx_desc;
struct sk_buff *skb;
struct ieee80211_rx_status status;
- unsigned long addr;
struct ieee80211_hdr *wh;
u16 rate_info;
@@ -928,18 +932,19 @@ static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
break;
rmb();
- skb = rxq->skb[rxq->head];
+ skb = rxq->buf[rxq->head].skb;
if (skb == NULL)
break;
- rxq->skb[rxq->head] = NULL;
+ rxq->buf[rxq->head].skb = NULL;
+
+ pci_unmap_single(priv->pdev,
+ pci_unmap_addr(&rxq->buf[rxq->head], dma),
+ MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
+ pci_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
rxq->head = (rxq->head + 1) % MWL8K_RX_DESCS;
rxq->rxd_count--;
- addr = le32_to_cpu(rx_desc->pkt_phys_addr);
- pci_unmap_single(priv->pdev, addr,
- MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
-
skb_put(skb, le16_to_cpu(rx_desc->pkt_len));
mwl8k_remove_dma_header(skb);
--
1.5.6.4