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authorGertjan van Wingerde <gwingerde@kpnplanet.nl>2008-06-16 19:56:31 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-06-26 16:49:16 -0400
commitc4da004857056e6ee034c4110ccdcba659077b7e (patch)
tree641f8d9ddab7b8b6ba41fefc57a517abce15e8e6 /drivers/net/wireless/rt2x00/rt61pci.c
parent30caa6e3d586442f7c3ad081260ee1b22bb123de (diff)
rt2x00: Replace statically allocated DMA buffers with mapped skb's.
The current PCI drivers require a lot of pre-allocated DMA buffers. Reduce this by using dynamically mapped skb's (using pci_map_single) instead of the pre- allocated DMA buffers that are allocated at device start-up time. At the same time move common RX path code into rt2x00lib from rt2x00pci and rt2x00usb, as the RX paths now are now almost the same. Signed-off-by: Gertjan van Wingerde <gwingerde@kpnplanet.nl> Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt61pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt61pci.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 2a7f3062035..c9f6d484413 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1030,11 +1030,12 @@ static void rt61pci_init_rxentry(struct rt2x00_dev *rt2x00dev,
struct queue_entry *entry)
{
struct queue_entry_priv_pci *entry_priv = entry->priv_data;
+ struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
u32 word;
rt2x00_desc_read(entry_priv->desc, 5, &word);
rt2x00_set_field32(&word, RXD_W5_BUFFER_PHYSICAL_ADDRESS,
- entry_priv->data_dma);
+ skbdesc->skb_dma);
rt2x00_desc_write(entry_priv->desc, 5, word);
rt2x00_desc_read(entry_priv->desc, 0, &word);
@@ -1522,7 +1523,6 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
struct txentry_desc *txdesc)
{
struct skb_frame_desc *skbdesc = get_skb_frame_desc(skb);
- struct queue_entry_priv_pci *entry_priv = skbdesc->entry->priv_data;
__le32 *txd = skbdesc->desc;
u32 word;
@@ -1557,7 +1557,7 @@ static void rt61pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
rt2x00_desc_read(txd, 6, &word);
rt2x00_set_field32(&word, TXD_W6_BUFFER_PHYSICAL_ADDRESS,
- entry_priv->data_dma);
+ skbdesc->skb_dma);
rt2x00_desc_write(txd, 6, word);
if (skbdesc->desc_len > TXINFO_SIZE) {
@@ -2302,9 +2302,10 @@ static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev)
rt61pci_probe_hw_mode(rt2x00dev);
/*
- * This device requires firmware.
+ * This device requires firmware and DMA mapped skbs.
*/
__set_bit(DRIVER_REQUIRE_FIRMWARE, &rt2x00dev->flags);
+ __set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
/*
* Set the rssi offset.