static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
{
struct rt2x00_dev *rt2x00dev = dev_instance;
u32 reg;
/* Read status and ACK all interrupts */
rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, ®);
rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
if (!reg)
return IRQ_NONE;
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
/*
* 1 - Rx ring done interrupt.
*/
if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
rt2x00pci_rxdone(rt2x00dev);
if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
rt2800pci_txdone(rt2x00dev);
return IRQ_HANDLED;
}
/*
* Interrupt functions.
*/
static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
{
struct ieee80211_conf conf = { .flags = 0 };
struct rt2x00lib_conf libconf = { .conf = &conf };
rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
}
static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
struct queue_entry *entry;
u32 status;
u8 qid;
while (kfifo_get(&rt2x00dev->txstatus_fifo, &status)) {
qid = rt2x00_get_field32(status, TX_STA_FIFO_PID_QUEUE);
if (qid >= QID_RX) {
/*
* Unknown queue, this shouldn't happen. Just drop
* this tx status.
*/
WARNING(rt2x00dev, "Got TX status report with "
"unexpected pid %u, dropping\n", qid);
break;
}
queue = rt2x00queue_get_queue(rt2x00dev, qid);
if (unlikely(queue == NULL)) {
/*
* The queue is NULL, this shouldn't happen. Stop
* processing here and drop the tx status
*/
WARNING(rt2x00dev, "Got TX status for an unavailable "
"queue %u, dropping\n", qid);
break;
}
if (rt2x00queue_empty(queue)) {
/*
* The queue is empty. Stop processing here
* and drop the tx status.
*/
WARNING(rt2x00dev, "Got TX status for an empty "
"queue %u, dropping\n", qid);
break;
}
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
rt2800_txdone_entry(entry, status);
}
}
static void rt2800pci_txstatus_tasklet(unsigned long data)
{
rt2800pci_txdone((struct rt2x00_dev *)data);
}
static void rt2800pci_txstatus_tasklet(unsigned long data)
{
rt2800pci_txdone((struct rt2x00_dev *)data);
/*
* No need to enable the tx status interrupt here as we always
* leave it enabled to minimize the possibility of a tx status
* register overflow. See comment in interrupt handler.
*/
}