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authorGertjan van Wingerde <gwingerde@gmail.com>2010-05-11 23:51:40 +0200
committerJohn W. Linville <linville@tuxdriver.com>2010-05-12 22:41:44 +0200
commit85b7a8b3871bde7885516fed2a1c8da699913318 (patch)
tree80c488fc082b06c9278e8e30db0033306404e8a1 /drivers/net/wireless/rt2x00/rt2500pci.c
parentrt2x00: Re-order tx descriptor writing code in drivers. (diff)
downloadlinux-85b7a8b3871bde7885516fed2a1c8da699913318.tar.xz
linux-85b7a8b3871bde7885516fed2a1c8da699913318.zip
rt2x00: Simplify TXD handling of beacons.
The handling of tx descriptors for beacons can be simplified by updating write_tx_desc implementations of each driver to write directly to the queue entry descriptor instead of to a provided memory area. This is also a preparation for further clean ups where descriptors are properly reserved in the skb instead of fiddling with the skb data pointer. Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2500pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2500pci.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c
index 8d3e95e0dcfe..070c23ed4013 100644
--- a/drivers/net/wireless/rt2x00/rt2500pci.c
+++ b/drivers/net/wireless/rt2x00/rt2500pci.c
@@ -1164,15 +1164,15 @@ static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
{
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;
+ __le32 *txd = entry_priv->desc;
u32 word;
/*
* Start writing the descriptor words.
*/
- rt2x00_desc_read(entry_priv->desc, 1, &word);
+ rt2x00_desc_read(txd, 1, &word);
rt2x00_set_field32(&word, TXD_W1_BUFFER_ADDRESS, skbdesc->skb_dma);
- rt2x00_desc_write(entry_priv->desc, 1, word);
+ rt2x00_desc_write(txd, 1, word);
rt2x00_desc_read(txd, 2, &word);
rt2x00_set_field32(&word, TXD_W2_IV_OFFSET, IEEE80211_HEADER);
@@ -1216,6 +1216,12 @@ static void rt2500pci_write_tx_desc(struct rt2x00_dev *rt2x00dev,
rt2x00_set_field32(&word, TXD_W0_DATABYTE_COUNT, txdesc->length);
rt2x00_set_field32(&word, TXD_W0_CIPHER_ALG, CIPHER_NONE);
rt2x00_desc_write(txd, 0, word);
+
+ /*
+ * Register descriptor details in skb frame descriptor.
+ */
+ skbdesc->desc = txd;
+ skbdesc->desc_len = TXD_DESC_SIZE;
}
/*
@@ -1238,15 +1244,6 @@ static void rt2500pci_write_beacon(struct queue_entry *entry,
rt2x00_set_field32(&reg, CSR14_BEACON_GEN, 0);
rt2x00pci_register_write(rt2x00dev, CSR14, reg);
- /*
- * Replace rt2x00lib allocated descriptor with the
- * pointer to the _real_ hardware descriptor.
- * After that, map the beacon to DMA and update the
- * descriptor.
- */
- memcpy(entry_priv->desc, skbdesc->desc, skbdesc->desc_len);
- skbdesc->desc = entry_priv->desc;
-
rt2x00queue_map_txskb(rt2x00dev, entry->skb);
rt2x00_desc_read(entry_priv->desc, 1, &word);