diff options
| author | Gertjan van Wingerde <gwingerde@kpnplanet.nl> | 2008-05-10 13:44:14 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-05-21 21:47:33 -0400 |
| commit | 4de36fe5abe077a4c65bf0b6a309865aa043e055 (patch) | |
| tree | 3d7aadff5f9163a115c1fd1ee6de5146b797c76b /drivers/net/wireless/rt2x00/rt2400pci.c | |
| parent | 70a96109439cba0af0780ee1dc25ec7ed15f0bae (diff) | |
rt2x00: Only initialize the minimum needed fields of PCI TX descriptors.
In preparation of replacing the statically allocated data DMA buffers with DMA-mapped
skb's we need to change the TXD handling of the PCI drivers, by moving the programming
of the buffer address fields to the actual TXD writing at TX time, instead of at start-up
time.
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/rt2400pci.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2400pci.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c index b4310d798f9..2c0cf394c78 100644 --- a/drivers/net/wireless/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/rt2x00/rt2400pci.c @@ -643,15 +643,6 @@ static void rt2400pci_init_txentry(struct rt2x00_dev *rt2x00dev, struct queue_entry_priv_pci_tx *priv_tx = entry->priv_data; u32 word; - rt2x00_desc_read(priv_tx->desc, 1, &word); - rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, priv_tx->data_dma); - rt2x00_desc_write(priv_tx->desc, 1, word); - - rt2x00_desc_read(priv_tx->desc, 2, &word); - rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, - entry->queue->data_size); - rt2x00_desc_write(priv_tx->desc, 2, word); - rt2x00_desc_read(priv_tx->desc, 0, &word); rt2x00_set_field32(&word, TXD_W0_VALID, 0); rt2x00_set_field32(&word, TXD_W0_OWNER_NIC, 0); @@ -1004,13 +995,19 @@ static void rt2400pci_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_tx *entry_priv = skbdesc->entry->priv_data; __le32 *txd = skbdesc->desc; u32 word; /* * Start writing the descriptor words. */ + rt2x00_desc_read(entry_priv->desc, 1, &word); + rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, entry_priv->data_dma); + rt2x00_desc_write(entry_priv->desc, 1, word); + rt2x00_desc_read(txd, 2, &word); + rt2x00_set_field32(&word, TXD_W2_BUFFER_LENGTH, skbdesc->data_len); rt2x00_set_field32(&word, TXD_W2_DATABYTE_COUNT, skbdesc->data_len); rt2x00_desc_write(txd, 2, word); |