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authorJohn W. Linville <linville@tuxdriver.com>2011-04-25 14:34:25 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-04-25 14:34:25 -0400
commitcfef6047c4027a8448ec8dafeaf2bb362cc882e4 (patch)
treec254bd25aa8b4b0696b5b5cc45d8e30c7c1bb9dd /drivers/net/wireless/rt2x00/rt2x00usb.c
parentb71d1d426d263b0b6cb5760322efebbfc89d4463 (diff)
parent73b48099cc265f88fa1255f3f43e52fe6a94fd5c (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem
Conflicts: drivers/net/wireless/iwlwifi/iwl-core.c drivers/net/wireless/rt2x00/rt2x00queue.c drivers/net/wireless/rt2x00/rt2x00queue.h
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00usb.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00usb.c126
1 files changed, 105 insertions, 21 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 36f388f97d6..cb208d589ff 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -165,6 +165,56 @@ int rt2x00usb_regbusy_read(struct rt2x00_dev *rt2x00dev,
}
EXPORT_SYMBOL_GPL(rt2x00usb_regbusy_read);
+
+struct rt2x00_async_read_data {
+ __le32 reg;
+ struct usb_ctrlrequest cr;
+ struct rt2x00_dev *rt2x00dev;
+ void (*callback)(struct rt2x00_dev *,int,u32);
+};
+
+static void rt2x00usb_register_read_async_cb(struct urb *urb)
+{
+ struct rt2x00_async_read_data *rd = urb->context;
+ rd->callback(rd->rt2x00dev, urb->status, le32_to_cpu(rd->reg));
+ kfree(urb->context);
+}
+
+void rt2x00usb_register_read_async(struct rt2x00_dev *rt2x00dev,
+ const unsigned int offset,
+ void (*callback)(struct rt2x00_dev*,int,u32))
+{
+ struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
+ struct urb *urb;
+ struct rt2x00_async_read_data *rd;
+
+ rd = kmalloc(sizeof(*rd), GFP_ATOMIC);
+ if (!rd)
+ return;
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb) {
+ kfree(rd);
+ return;
+ }
+
+ rd->rt2x00dev = rt2x00dev;
+ rd->callback = callback;
+ rd->cr.bRequestType = USB_VENDOR_REQUEST_IN;
+ rd->cr.bRequest = USB_MULTI_READ;
+ rd->cr.wValue = 0;
+ rd->cr.wIndex = cpu_to_le16(offset);
+ rd->cr.wLength = cpu_to_le16(sizeof(u32));
+
+ usb_fill_control_urb(urb, usb_dev, usb_rcvctrlpipe(usb_dev, 0),
+ (unsigned char *)(&rd->cr), &rd->reg, sizeof(rd->reg),
+ rt2x00usb_register_read_async_cb, rd);
+ if (usb_submit_urb(urb, GFP_ATOMIC) < 0)
+ kfree(rd);
+ usb_free_urb(urb);
+}
+EXPORT_SYMBOL_GPL(rt2x00usb_register_read_async);
+
/*
* TX data handlers.
*/
@@ -212,6 +262,9 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb)
if (!test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
return;
+ if (rt2x00dev->ops->lib->tx_dma_done)
+ rt2x00dev->ops->lib->tx_dma_done(entry);
+
/*
* Report the frame as DMA done
*/
@@ -227,10 +280,12 @@ static void rt2x00usb_interrupt_txdone(struct urb *urb)
* Schedule the delayed work for reading the TX status
* from the device.
*/
- queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
+ if (!test_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags) ||
+ !kfifo_is_empty(&rt2x00dev->txstatus_fifo))
+ queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
}
-static void rt2x00usb_kick_tx_entry(struct queue_entry *entry)
+static bool rt2x00usb_kick_tx_entry(struct queue_entry *entry, void* data)
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
@@ -240,7 +295,7 @@ static void rt2x00usb_kick_tx_entry(struct queue_entry *entry)
if (!test_and_clear_bit(ENTRY_DATA_PENDING, &entry->flags) ||
test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
- return;
+ return true;
/*
* USB devices cannot blindly pass the skb->len as the
@@ -261,6 +316,8 @@ static void rt2x00usb_kick_tx_entry(struct queue_entry *entry)
set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
rt2x00lib_dmadone(entry);
}
+
+ return false;
}
/*
@@ -323,7 +380,7 @@ static void rt2x00usb_interrupt_rxdone(struct urb *urb)
queue_work(rt2x00dev->workqueue, &rt2x00dev->rxdone_work);
}
-static void rt2x00usb_kick_rx_entry(struct queue_entry *entry)
+static bool rt2x00usb_kick_rx_entry(struct queue_entry *entry, void* data)
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct usb_device *usb_dev = to_usb_device_intf(rt2x00dev->dev);
@@ -332,7 +389,7 @@ static void rt2x00usb_kick_rx_entry(struct queue_entry *entry)
if (test_and_set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
- return;
+ return true;
rt2x00lib_dmastart(entry);
@@ -348,6 +405,8 @@ static void rt2x00usb_kick_rx_entry(struct queue_entry *entry)
set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
rt2x00lib_dmadone(entry);
}
+
+ return false;
}
void rt2x00usb_kick_queue(struct data_queue *queue)
@@ -358,12 +417,18 @@ void rt2x00usb_kick_queue(struct data_queue *queue)
case QID_AC_BE:
case QID_AC_BK:
if (!rt2x00queue_empty(queue))
- rt2x00queue_for_each_entry(queue, Q_INDEX_DONE, Q_INDEX,
+ rt2x00queue_for_each_entry(queue,
+ Q_INDEX_DONE,
+ Q_INDEX,
+ NULL,
rt2x00usb_kick_tx_entry);
break;
case QID_RX:
if (!rt2x00queue_full(queue))
- rt2x00queue_for_each_entry(queue, Q_INDEX_DONE, Q_INDEX,
+ rt2x00queue_for_each_entry(queue,
+ Q_INDEX_DONE,
+ Q_INDEX,
+ NULL,
rt2x00usb_kick_rx_entry);
break;
default:
@@ -372,14 +437,14 @@ void rt2x00usb_kick_queue(struct data_queue *queue)
}
EXPORT_SYMBOL_GPL(rt2x00usb_kick_queue);
-static void rt2x00usb_flush_entry(struct queue_entry *entry)
+static bool rt2x00usb_flush_entry(struct queue_entry *entry, void* data)
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
struct queue_entry_priv_usb *entry_priv = entry->priv_data;
struct queue_entry_priv_usb_bcn *bcn_priv = entry->priv_data;
if (!test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
- return;
+ return true;
usb_kill_urb(entry_priv->urb);
@@ -387,17 +452,20 @@ static void rt2x00usb_flush_entry(struct queue_entry *entry)
* Kill guardian urb (if required by driver).
*/
if ((entry->queue->qid == QID_BEACON) &&
- (test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)))
+ (test_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags)))
usb_kill_urb(bcn_priv->guardian_urb);
+
+ return false;
}
-void rt2x00usb_flush_queue(struct data_queue *queue)
+void rt2x00usb_flush_queue(struct data_queue *queue, bool drop)
{
struct work_struct *completion;
unsigned int i;
- rt2x00queue_for_each_entry(queue, Q_INDEX_DONE, Q_INDEX,
- rt2x00usb_flush_entry);
+ if (drop)
+ rt2x00queue_for_each_entry(queue, Q_INDEX_DONE, Q_INDEX, NULL,
+ rt2x00usb_flush_entry);
/*
* Obtain the queue completion handler
@@ -416,7 +484,7 @@ void rt2x00usb_flush_queue(struct data_queue *queue)
return;
}
- for (i = 0; i < 20; i++) {
+ for (i = 0; i < 10; i++) {
/*
* Check if the driver is already done, otherwise we
* have to sleep a little while to give the driver/hw
@@ -456,15 +524,31 @@ static void rt2x00usb_watchdog_tx_status(struct data_queue *queue)
queue_work(queue->rt2x00dev->workqueue, &queue->rt2x00dev->txdone_work);
}
+static int rt2x00usb_status_timeout(struct data_queue *queue)
+{
+ struct queue_entry *entry;
+
+ entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+ return rt2x00queue_status_timeout(entry);
+}
+
+static int rt2x00usb_dma_timeout(struct data_queue *queue)
+{
+ struct queue_entry *entry;
+
+ entry = rt2x00queue_get_entry(queue, Q_INDEX_DMA_DONE);
+ return rt2x00queue_dma_timeout(entry);
+}
+
void rt2x00usb_watchdog(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
tx_queue_for_each(rt2x00dev, queue) {
if (!rt2x00queue_empty(queue)) {
- if (rt2x00queue_dma_timeout(queue))
+ if (rt2x00usb_dma_timeout(queue))
rt2x00usb_watchdog_tx_dma(queue);
- if (rt2x00queue_status_timeout(queue))
+ if (rt2x00usb_status_timeout(queue))
rt2x00usb_watchdog_tx_status(queue);
}
}
@@ -489,7 +573,7 @@ void rt2x00usb_clear_entry(struct queue_entry *entry)
entry->flags = 0;
if (entry->queue->qid == QID_RX)
- rt2x00usb_kick_rx_entry(entry);
+ rt2x00usb_kick_rx_entry(entry, NULL);
}
EXPORT_SYMBOL_GPL(rt2x00usb_clear_entry);
@@ -583,7 +667,7 @@ static int rt2x00usb_alloc_entries(struct data_queue *queue)
* then we are done.
*/
if (queue->qid != QID_BEACON ||
- !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags))
+ !test_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags))
return 0;
for (i = 0; i < queue->limit; i++) {
@@ -618,7 +702,7 @@ static void rt2x00usb_free_entries(struct data_queue *queue)
* then we are done.
*/
if (queue->qid != QID_BEACON ||
- !test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags))
+ !test_bit(REQUIRE_BEACON_GUARD, &rt2x00dev->cap_flags))
return;
for (i = 0; i < queue->limit; i++) {
@@ -707,10 +791,9 @@ exit:
}
int rt2x00usb_probe(struct usb_interface *usb_intf,
- const struct usb_device_id *id)
+ const struct rt2x00_ops *ops)
{
struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
- struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info;
struct ieee80211_hw *hw;
struct rt2x00_dev *rt2x00dev;
int retval;
@@ -735,6 +818,7 @@ int rt2x00usb_probe(struct usb_interface *usb_intf,
INIT_WORK(&rt2x00dev->rxdone_work, rt2x00usb_work_rxdone);
INIT_WORK(&rt2x00dev->txdone_work, rt2x00usb_work_txdone);
+ init_timer(&rt2x00dev->txstatus_timer);
retval = rt2x00usb_alloc_reg(rt2x00dev);
if (retval)