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path: root/drivers/net/wireless/rt2x00/rt2800usb.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800usb.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2800usb.c232
1 files changed, 152 insertions, 80 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 262ee9eefb6f..cd490abced91 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -114,45 +114,103 @@ static bool rt2800usb_txstatus_pending(struct rt2x00_dev *rt2x00dev)
return false;
}
+static inline bool rt2800usb_entry_txstatus_timeout(struct queue_entry *entry)
+{
+ bool tout;
+
+ if (!test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))
+ return false;
+
+ tout = time_after(jiffies, entry->last_action + msecs_to_jiffies(100));
+ if (unlikely(tout))
+ WARNING(entry->queue->rt2x00dev,
+ "TX status timeout for entry %d in queue %d\n",
+ entry->entry_idx, entry->queue->qid);
+ return tout;
+
+}
+
+static bool rt2800usb_txstatus_timeout(struct rt2x00_dev *rt2x00dev)
+{
+ struct data_queue *queue;
+ struct queue_entry *entry;
+
+ tx_queue_for_each(rt2x00dev, queue) {
+ entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+ if (rt2800usb_entry_txstatus_timeout(entry))
+ return true;
+ }
+ return false;
+}
+
static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev,
int urb_status, u32 tx_status)
{
+ bool valid;
+
if (urb_status) {
- WARNING(rt2x00dev, "rt2x00usb_register_read_async failed: %d\n", urb_status);
- return false;
+ WARNING(rt2x00dev, "TX status read failed %d\n", urb_status);
+
+ goto stop_reading;
}
- /* try to read all TX_STA_FIFO entries before scheduling txdone_work */
- if (rt2x00_get_field32(tx_status, TX_STA_FIFO_VALID)) {
- if (!kfifo_put(&rt2x00dev->txstatus_fifo, &tx_status)) {
- WARNING(rt2x00dev, "TX status FIFO overrun, "
- "drop tx status report.\n");
- queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
- } else
- return true;
- } else if (!kfifo_is_empty(&rt2x00dev->txstatus_fifo)) {
+ valid = rt2x00_get_field32(tx_status, TX_STA_FIFO_VALID);
+ if (valid) {
+ if (!kfifo_put(&rt2x00dev->txstatus_fifo, &tx_status))
+ WARNING(rt2x00dev, "TX status FIFO overrun\n");
+
queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work);
+
+ /* Reschedule urb to read TX status again instantly */
+ return true;
} else if (rt2800usb_txstatus_pending(rt2x00dev)) {
- mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
+ /* Read register after 250 us */
+ hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 250000),
+ HRTIMER_MODE_REL);
+ return false;
}
- return false;
+stop_reading:
+ clear_bit(TX_STATUS_READING, &rt2x00dev->flags);
+ /*
+ * There is small race window above, between txstatus pending check and
+ * clear_bit someone could do rt2x00usb_interrupt_txdone, so recheck
+ * here again if status reading is needed.
+ */
+ if (rt2800usb_txstatus_pending(rt2x00dev) &&
+ test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
+ return true;
+ else
+ return false;
+}
+
+static void rt2800usb_async_read_tx_status(struct rt2x00_dev *rt2x00dev)
+{
+
+ if (test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags))
+ return;
+
+ /* Read TX_STA_FIFO register after 500 us */
+ hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 500000),
+ HRTIMER_MODE_REL);
}
static void rt2800usb_tx_dma_done(struct queue_entry *entry)
{
struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
- rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
- rt2800usb_tx_sta_fifo_read_completed);
+ rt2800usb_async_read_tx_status(rt2x00dev);
}
-static void rt2800usb_tx_sta_fifo_timeout(unsigned long data)
+static enum hrtimer_restart rt2800usb_tx_sta_fifo_timeout(struct hrtimer *timer)
{
- struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+ struct rt2x00_dev *rt2x00dev =
+ container_of(timer, struct rt2x00_dev, txstatus_timer);
rt2x00usb_register_read_async(rt2x00dev, TX_STA_FIFO,
rt2800usb_tx_sta_fifo_read_completed);
+
+ return HRTIMER_NORESTART;
}
/*
@@ -226,9 +284,7 @@ static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
rt2x00usb_register_read(rt2x00dev, PBF_SYS_CTRL, &reg);
rt2x00usb_register_write(rt2x00dev, PBF_SYS_CTRL, reg & ~0x00002000);
- rt2x00usb_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
-
- rt2x00usb_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
+ reg = 0;
rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_CSR, 1);
rt2x00_set_field32(&reg, MAC_SYS_CTRL_RESET_BBP, 1);
rt2x00usb_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
@@ -440,35 +496,26 @@ static int rt2800usb_get_tx_data_len(struct queue_entry *entry)
/*
* TX control handlers
*/
-static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
+static enum txdone_entry_desc_flags
+rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
{
__le32 *txwi;
u32 word;
int wcid, ack, pid;
- int tx_wcid, tx_ack, tx_pid;
-
- if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
- !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags)) {
- WARNING(entry->queue->rt2x00dev,
- "Data pending for entry %u in queue %u\n",
- entry->entry_idx, entry->queue->qid);
- cond_resched();
- return false;
- }
-
- wcid = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
- ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
- pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
+ int tx_wcid, tx_ack, tx_pid, is_agg;
/*
* This frames has returned with an IO error,
* so the status report is not intended for this
* frame.
*/
- if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags)) {
- rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
- return false;
- }
+ if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
+ return TXDONE_FAILURE;
+
+ wcid = rt2x00_get_field32(reg, TX_STA_FIFO_WCID);
+ ack = rt2x00_get_field32(reg, TX_STA_FIFO_TX_ACK_REQUIRED);
+ pid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_TYPE);
+ is_agg = rt2x00_get_field32(reg, TX_STA_FIFO_TX_AGGRE);
/*
* Validate if this TX status report is intended for
@@ -481,15 +528,14 @@ static bool rt2800usb_txdone_entry_check(struct queue_entry *entry, u32 reg)
tx_ack = rt2x00_get_field32(word, TXWI_W1_ACK);
tx_pid = rt2x00_get_field32(word, TXWI_W1_PACKETID);
- if ((wcid != tx_wcid) || (ack != tx_ack) || (pid != tx_pid)) {
+ if (wcid != tx_wcid || ack != tx_ack || (!is_agg && pid != tx_pid)) {
WARNING(entry->queue->rt2x00dev,
"TX status report missed for queue %d entry %d\n",
- entry->queue->qid, entry->entry_idx);
- rt2x00lib_txdone_noinfo(entry, TXDONE_UNKNOWN);
- return false;
+ entry->queue->qid, entry->entry_idx);
+ return TXDONE_UNKNOWN;
}
- return true;
+ return TXDONE_SUCCESS;
}
static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
@@ -498,47 +544,44 @@ static void rt2800usb_txdone(struct rt2x00_dev *rt2x00dev)
struct queue_entry *entry;
u32 reg;
u8 qid;
+ enum txdone_entry_desc_flags done_status;
while (kfifo_get(&rt2x00dev->txstatus_fifo, &reg)) {
-
- /* TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus
- * qid is guaranteed to be one of the TX QIDs
+ /*
+ * TX_STA_FIFO_PID_QUEUE is a 2-bit field, thus qid is
+ * guaranteed to be one of the TX QIDs .
*/
qid = rt2x00_get_field32(reg, TX_STA_FIFO_PID_QUEUE);
queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
- if (unlikely(!queue)) {
- WARNING(rt2x00dev, "Got TX status for an unavailable "
+
+ if (unlikely(rt2x00queue_empty(queue))) {
+ WARNING(rt2x00dev, "Got TX status for an empty "
"queue %u, dropping\n", qid);
- continue;
+ break;
}
- /*
- * Inside each queue, we process each entry in a chronological
- * order. We first check that the queue is not empty.
- */
- entry = NULL;
- while (!rt2x00queue_empty(queue)) {
- entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
- if (rt2800usb_txdone_entry_check(entry, reg))
- break;
- entry = NULL;
+ entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
+
+ if (unlikely(test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags) ||
+ !test_bit(ENTRY_DATA_STATUS_PENDING, &entry->flags))) {
+ WARNING(rt2x00dev, "Data pending for entry %u "
+ "in queue %u\n", entry->entry_idx, qid);
+ break;
}
- if (entry)
- rt2800_txdone_entry(entry, reg,
- rt2800usb_get_txwi(entry));
+ done_status = rt2800usb_txdone_entry_check(entry, reg);
+ if (likely(done_status == TXDONE_SUCCESS))
+ rt2800_txdone_entry(entry, reg, rt2800usb_get_txwi(entry));
+ else
+ rt2x00lib_txdone_noinfo(entry, done_status);
}
}
-static void rt2800usb_work_txdone(struct work_struct *work)
+static void rt2800usb_txdone_nostatus(struct rt2x00_dev *rt2x00dev)
{
- struct rt2x00_dev *rt2x00dev =
- container_of(work, struct rt2x00_dev, txdone_work);
struct data_queue *queue;
struct queue_entry *entry;
- rt2800usb_txdone(rt2x00dev);
-
/*
* Process any trailing TX status reports for IO failures,
* we loop until we find the first non-IO error entry. This
@@ -556,20 +599,34 @@ static void rt2800usb_work_txdone(struct work_struct *work)
if (test_bit(ENTRY_DATA_IO_FAILED, &entry->flags))
rt2x00lib_txdone_noinfo(entry, TXDONE_FAILURE);
- else if (rt2x00queue_status_timeout(entry))
+ else if (rt2800usb_entry_txstatus_timeout(entry))
rt2x00lib_txdone_noinfo(entry, TXDONE_UNKNOWN);
else
break;
}
}
+}
- /*
- * The hw may delay sending the packet after DMA complete
- * if the medium is busy, thus the TX_STA_FIFO entry is
- * also delayed -> use a timer to retrieve it.
- */
- if (rt2800usb_txstatus_pending(rt2x00dev))
- mod_timer(&rt2x00dev->txstatus_timer, jiffies + msecs_to_jiffies(2));
+static void rt2800usb_work_txdone(struct work_struct *work)
+{
+ struct rt2x00_dev *rt2x00dev =
+ container_of(work, struct rt2x00_dev, txdone_work);
+
+ while (!kfifo_is_empty(&rt2x00dev->txstatus_fifo) ||
+ rt2800usb_txstatus_timeout(rt2x00dev)) {
+
+ rt2800usb_txdone(rt2x00dev);
+
+ rt2800usb_txdone_nostatus(rt2x00dev);
+
+ /*
+ * The hw may delay sending the packet after DMA complete
+ * if the medium is busy, thus the TX_STA_FIFO entry is
+ * also delayed -> use a timer to retrieve it.
+ */
+ if (rt2800usb_txstatus_pending(rt2x00dev))
+ rt2800usb_async_read_tx_status(rt2x00dev);
+ }
}
/*
@@ -711,9 +768,7 @@ static int rt2800usb_probe_hw(struct rt2x00_dev *rt2x00dev)
__set_bit(REQUIRE_TXSTATUS_FIFO, &rt2x00dev->cap_flags);
__set_bit(REQUIRE_PS_AUTOWAKE, &rt2x00dev->cap_flags);
- setup_timer(&rt2x00dev->txstatus_timer,
- rt2800usb_tx_sta_fifo_timeout,
- (unsigned long) rt2x00dev);
+ rt2x00dev->txstatus_timer.function = rt2800usb_tx_sta_fifo_timeout,
/*
* Set the rssi offset.
@@ -783,6 +838,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
.reset_tuner = rt2800_reset_tuner,
.link_tuner = rt2800_link_tuner,
.gain_calibration = rt2800_gain_calibration,
+ .vco_calibration = rt2800_vco_calibration,
.watchdog = rt2800usb_watchdog,
.start_queue = rt2800usb_start_queue,
.kick_queue = rt2x00usb_kick_queue,
@@ -814,7 +870,7 @@ static const struct data_queue_desc rt2800usb_queue_rx = {
};
static const struct data_queue_desc rt2800usb_queue_tx = {
- .entry_num = 64,
+ .entry_num = 16,
.data_size = AGGREGATION_SIZE,
.desc_size = TXINFO_DESC_SIZE + TXWI_DESC_SIZE,
.priv_size = sizeof(struct queue_entry_priv_usb),
@@ -829,6 +885,7 @@ static const struct data_queue_desc rt2800usb_queue_bcn = {
static const struct rt2x00_ops rt2800usb_ops = {
.name = KBUILD_MODNAME,
+ .drv_data_size = sizeof(struct rt2800_drv_data),
.max_sta_intf = 1,
.max_ap_intf = 8,
.eeprom_size = EEPROM_SIZE,
@@ -922,6 +979,7 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x07d1, 0x3c13) },
{ USB_DEVICE(0x07d1, 0x3c15) },
{ USB_DEVICE(0x07d1, 0x3c16) },
+ { USB_DEVICE(0x2001, 0x3c1b) },
/* Draytek */
{ USB_DEVICE(0x07fa, 0x7712) },
/* DVICO */
@@ -1101,12 +1159,26 @@ static struct usb_device_id rt2800usb_device_table[] = {
{ USB_DEVICE(0x5a57, 0x0284) },
#endif
#ifdef CONFIG_RT2800USB_RT53XX
+ /* Alpha */
+ { USB_DEVICE(0x2001, 0x3c15) },
+ { USB_DEVICE(0x2001, 0x3c19) },
+ /* Arcadyan */
+ { USB_DEVICE(0x043e, 0x7a12) },
/* Azurewave */
{ USB_DEVICE(0x13d3, 0x3329) },
{ USB_DEVICE(0x13d3, 0x3365) },
+ /* LG innotek */
+ { USB_DEVICE(0x043e, 0x7a22) },
+ /* Panasonic */
+ { USB_DEVICE(0x04da, 0x1801) },
+ { USB_DEVICE(0x04da, 0x1800) },
+ /* Philips */
+ { USB_DEVICE(0x0471, 0x2104) },
/* Ralink */
{ USB_DEVICE(0x148f, 0x5370) },
{ USB_DEVICE(0x148f, 0x5372) },
+ /* Unknown */
+ { USB_DEVICE(0x04da, 0x23f6) },
#endif
#ifdef CONFIG_RT2800USB_UNKNOWN
/*