rt2x00: Centralize rt2800 beacon writing.

The beacon writing functions of rt2800pci and rt2800usb are now identical.
Move them to rt2800lib to only have one central function.

Signed-off-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
index 3258301aa29..1556e324cec 100644
--- a/drivers/net/wireless/rt2x00/rt2800lib.c
+++ b/drivers/net/wireless/rt2x00/rt2800lib.c
@@ -379,6 +379,67 @@ void rt2800_process_rxwi(struct sk_buff *skb, struct rxdone_entry_desc *rxdesc)
 }
 EXPORT_SYMBOL_GPL(rt2800_process_rxwi);
 
+void rt2800_write_beacon(struct queue_entry *entry, struct txentry_desc *txdesc)
+{
+	struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
+	struct skb_frame_desc *skbdesc = get_skb_frame_desc(entry->skb);
+	unsigned int beacon_base;
+	u32 reg;
+
+	/*
+	 * Disable beaconing while we are reloading the beacon data,
+	 * otherwise we might be sending out invalid data.
+	 */
+	rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
+	rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
+	rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+
+	/*
+	 * Add space for the TXWI in front of the skb.
+	 */
+	skb_push(entry->skb, TXWI_DESC_SIZE);
+	memset(entry->skb, 0, TXWI_DESC_SIZE);
+
+	/*
+	 * Register descriptor details in skb frame descriptor.
+	 */
+	skbdesc->flags |= SKBDESC_DESC_IN_SKB;
+	skbdesc->desc = entry->skb->data;
+	skbdesc->desc_len = TXWI_DESC_SIZE;
+
+	/*
+	 * Add the TXWI for the beacon to the skb.
+	 */
+	rt2800_write_txwi((__le32 *)entry->skb->data, txdesc);
+
+	/*
+	 * Dump beacon to userspace through debugfs.
+	 */
+	rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
+
+	/*
+	 * Write entire beacon with TXWI to register.
+	 */
+	beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
+	rt2800_register_multiwrite(rt2x00dev, beacon_base,
+				   entry->skb->data, entry->skb->len);
+
+	/*
+	 * Enable beaconing again.
+	 */
+	rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
+	rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
+	rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
+	rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+
+	/*
+	 * Clean up beacon skb.
+	 */
+	dev_kfree_skb_any(entry->skb);
+	entry->skb = NULL;
+}
+EXPORT_SYMBOL(rt2800_write_beacon);
+
 #ifdef CONFIG_RT2X00_LIB_DEBUGFS
 const struct rt2x00debug rt2800_rt2x00debug = {
 	.owner	= THIS_MODULE,