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authorIvo van Doorn <IvDoorn@gmail.com>2008-06-06 22:47:39 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-06-14 12:17:56 -0400
commitf019d51410a9b61278eeff811a1ca11d2a905241 (patch)
tree3f038d3e8b7301c33df31344307c7a3180227e51 /drivers/net
parent565a019ac635d4f5140a8c4da21387c3b2b28fb9 (diff)
rt2x00: Implement rt2x00usb_kick_tx_queue()
rt2x00usb_kick_tx_queue() will loop over all entries within the INDEX_DONE->INDEX range and kick each entry which is pending to be kicked. This makes the kick_tx_queue approach work the same as with the PCI drivers which will allow for more code generalisation into rt2x00lib. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/rt2x00/rt2500usb.c4
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00queue.h3
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00usb.c48
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00usb.h11
-rw-r--r--drivers/net/wireless/rt2x00/rt73usb.c4
5 files changed, 67 insertions, 3 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2500usb.c b/drivers/net/wireless/rt2x00/rt2500usb.c
index 0d51b748c5b..6abb4c5338f 100644
--- a/drivers/net/wireless/rt2x00/rt2500usb.c
+++ b/drivers/net/wireless/rt2x00/rt2500usb.c
@@ -1116,8 +1116,10 @@ static void rt2500usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
{
u16 reg;
- if (queue != QID_BEACON)
+ if (queue != QID_BEACON) {
+ rt2x00usb_kick_tx_queue(rt2x00dev, queue);
return;
+ }
rt2500usb_register_read(rt2x00dev, TXRX_CSR19, &reg);
if (!rt2x00_get_field16(reg, TXRX_CSR19_BEACON_GEN)) {
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.h b/drivers/net/wireless/rt2x00/rt2x00queue.h
index 4d00ced14cc..303d5568470 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.h
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.h
@@ -260,11 +260,14 @@ struct txentry_desc {
* @ENTRY_OWNER_DEVICE_CRYPTO: This entry is owned by the device for data
* encryption or decryption. The entry should only be touched after
* the device has signaled it is done with it.
+ * @ENTRY_DATA_PENDING: This entry contains a valid frame and is waiting
+ * for the signal to start sending.
*/
enum queue_entry_flags {
ENTRY_BCN_ASSIGNED,
ENTRY_OWNER_DEVICE_DATA,
ENTRY_OWNER_DEVICE_CRYPTO,
+ ENTRY_DATA_PENDING,
};
/**
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 66f15e6c7d2..cdac9280fe4 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -232,9 +232,10 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
* Initialize URB and send the frame to the device.
*/
__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
+ __set_bit(ENTRY_DATA_PENDING, &entry->flags);
+
usb_fill_bulk_urb(entry_priv->urb, usb_dev, usb_sndbulkpipe(usb_dev, 1),
skb->data, length, rt2x00usb_interrupt_txdone, entry);
- usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
rt2x00queue_index_inc(queue, Q_INDEX);
@@ -242,6 +243,51 @@ int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
}
EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data);
+static inline void rt2x00usb_kick_tx_entry(struct queue_entry *entry)
+{
+ struct queue_entry_priv_usb *entry_priv = entry->priv_data;
+
+ if (__test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags))
+ usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+}
+
+void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
+ const enum data_queue_qid qid)
+{
+ struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, qid);
+ unsigned long irqflags;
+ unsigned int index;
+ unsigned int index_done;
+ unsigned int i;
+
+ /*
+ * Only protect the range we are going to loop over,
+ * if during our loop a extra entry is set to pending
+ * it should not be kicked during this run, since it
+ * is part of another TX operation.
+ */
+ spin_lock_irqsave(&queue->lock, irqflags);
+ index = queue->index[Q_INDEX];
+ index_done = queue->index[Q_INDEX_DONE];
+ spin_unlock_irqrestore(&queue->lock, irqflags);
+
+ /*
+ * Start from the TX done pointer, this guarentees that we will
+ * send out all frames in the correct order.
+ */
+ if (index_done < index) {
+ for (i = index_done; i < index; i++)
+ rt2x00usb_kick_tx_entry(&queue->entries[i]);
+ } else {
+ for (i = index_done; i < queue->limit; i++)
+ rt2x00usb_kick_tx_entry(&queue->entries[i]);
+
+ for (i = 0; i < index; i++)
+ rt2x00usb_kick_tx_entry(&queue->entries[i]);
+ }
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_kick_tx_queue);
+
/*
* RX data handlers.
*/
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.h b/drivers/net/wireless/rt2x00/rt2x00usb.h
index 26f53f868af..460d32c444d 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.h
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.h
@@ -245,6 +245,17 @@ struct queue_entry_priv_usb_bcn {
struct urb *guardian_urb;
};
+/**
+ * rt2x00usb_kick_tx_queue - Kick data queue
+ * @rt2x00dev: Pointer to &struct rt2x00_dev
+ * @qid: Data queue to kick
+ *
+ * This will walk through all entries of the queue and push all pending
+ * frames to the hardware as a single burst.
+ */
+void rt2x00usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
+ const enum data_queue_qid qid);
+
/*
* Device initialization handlers.
*/
diff --git a/drivers/net/wireless/rt2x00/rt73usb.c b/drivers/net/wireless/rt2x00/rt73usb.c
index db1fc136cda..5e5f6034383 100644
--- a/drivers/net/wireless/rt2x00/rt73usb.c
+++ b/drivers/net/wireless/rt2x00/rt73usb.c
@@ -1350,8 +1350,10 @@ static void rt73usb_kick_tx_queue(struct rt2x00_dev *rt2x00dev,
{
u32 reg;
- if (queue != QID_BEACON)
+ if (queue != QID_BEACON) {
+ rt2x00usb_kick_tx_queue(rt2x00dev, queue);
return;
+ }
/*
* For Wi-Fi faily generated beacons between participating stations.