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path: root/drivers/net/wireless/rt2x00/rt61pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt61pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt61pci.c130
1 files changed, 94 insertions, 36 deletions
diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 6a74baf4e934..e539c6cb636f 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -931,6 +931,9 @@ static void rt61pci_config_retry_limit(struct rt2x00_dev *rt2x00dev,
u32 reg;
rt2x00pci_register_read(rt2x00dev, TXRX_CSR4, &reg);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_DOWN, 1);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_RATE_STEP, 0);
+ rt2x00_set_field32(&reg, TXRX_CSR4_OFDM_TX_FALLBACK_CCK, 0);
rt2x00_set_field32(&reg, TXRX_CSR4_LONG_RETRY_LIMIT,
libconf->conf->long_frame_max_tx_count);
rt2x00_set_field32(&reg, TXRX_CSR4_SHORT_RETRY_LIMIT,
@@ -1619,7 +1622,8 @@ static void rt61pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
static void rt61pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
- int mask = (state == STATE_RADIO_IRQ_OFF);
+ int mask = (state == STATE_RADIO_IRQ_OFF) ||
+ (state == STATE_RADIO_IRQ_OFF_ISR);
u32 reg;
/*
@@ -1736,7 +1740,9 @@ static int rt61pci_set_device_state(struct rt2x00_dev *rt2x00dev,
rt61pci_toggle_rx(rt2x00dev, state);
break;
case STATE_RADIO_IRQ_ON:
+ case STATE_RADIO_IRQ_ON_ISR:
case STATE_RADIO_IRQ_OFF:
+ case STATE_RADIO_IRQ_OFF_ISR:
rt61pci_toggle_irq(rt2x00dev, state);
break;
case STATE_DEEP_SLEEP:
@@ -1874,6 +1880,16 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
rt2x00pci_register_write(rt2x00dev, TXRX_CSR9, reg);
/*
+ * Write the TX descriptor for the beacon.
+ */
+ rt61pci_write_tx_desc(rt2x00dev, entry->skb, txdesc);
+
+ /*
+ * Dump beacon to userspace through debugfs.
+ */
+ rt2x00debug_dump_frame(rt2x00dev, DUMP_FRAME_BEACON, entry->skb);
+
+ /*
* Write entire beacon with descriptor to register.
*/
beacon_base = HW_BEACON_OFFSET(entry->entry_idx);
@@ -2039,29 +2055,24 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
struct txdone_entry_desc txdesc;
u32 word;
u32 reg;
- u32 old_reg;
int type;
int index;
+ int i;
/*
- * During each loop we will compare the freshly read
- * STA_CSR4 register value with the value read from
- * the previous loop. If the 2 values are equal then
- * we should stop processing because the chance is
- * quite big that the device has been unplugged and
- * we risk going into an endless loop.
+ * TX_STA_FIFO is a stack of X entries, hence read TX_STA_FIFO
+ * at most X times and also stop processing once the TX_STA_FIFO_VALID
+ * flag is not set anymore.
+ *
+ * The legacy drivers use X=TX_RING_SIZE but state in a comment
+ * that the TX_STA_FIFO stack has a size of 16. We stick to our
+ * tx ring size for now.
*/
- old_reg = 0;
-
- while (1) {
+ for (i = 0; i < TX_ENTRIES; i++) {
rt2x00pci_register_read(rt2x00dev, STA_CSR4, &reg);
if (!rt2x00_get_field32(reg, STA_CSR4_VALID))
break;
- if (old_reg == reg)
- break;
- old_reg = reg;
-
/*
* Skip this entry when it contains an invalid
* queue identication number.
@@ -2120,6 +2131,13 @@ static void rt61pci_txdone(struct rt2x00_dev *rt2x00dev)
}
txdesc.retry = rt2x00_get_field32(reg, STA_CSR4_RETRY_COUNT);
+ /*
+ * the frame was retried at least once
+ * -> hw used fallback rates
+ */
+ if (txdesc.retry)
+ __set_bit(TXDONE_FALLBACK, &txdesc.flags);
+
rt2x00lib_txdone(entry, &txdesc);
}
}
@@ -2132,27 +2150,11 @@ static void rt61pci_wakeup(struct rt2x00_dev *rt2x00dev)
rt61pci_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
}
-static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
+static irqreturn_t rt61pci_interrupt_thread(int irq, void *dev_instance)
{
struct rt2x00_dev *rt2x00dev = dev_instance;
- u32 reg_mcu;
- u32 reg;
-
- /*
- * Get the interrupt sources & saved to local variable.
- * Write register value back to clear pending interrupts.
- */
- rt2x00pci_register_read(rt2x00dev, MCU_INT_SOURCE_CSR, &reg_mcu);
- rt2x00pci_register_write(rt2x00dev, MCU_INT_SOURCE_CSR, reg_mcu);
-
- rt2x00pci_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
- rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
-
- if (!reg && !reg_mcu)
- return IRQ_NONE;
-
- if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
- return IRQ_HANDLED;
+ u32 reg = rt2x00dev->irqvalue[0];
+ u32 reg_mcu = rt2x00dev->irqvalue[1];
/*
* Handle interrupts, walk through all bits
@@ -2185,9 +2187,51 @@ static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
if (rt2x00_get_field32(reg_mcu, MCU_INT_SOURCE_CSR_TWAKEUP))
rt61pci_wakeup(rt2x00dev);
+ /*
+ * 5 - Beacon done interrupt.
+ */
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_BEACON_DONE))
+ rt2x00lib_beacondone(rt2x00dev);
+
+ /* Enable interrupts again. */
+ rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+ STATE_RADIO_IRQ_ON_ISR);
return IRQ_HANDLED;
}
+
+static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
+{
+ struct rt2x00_dev *rt2x00dev = dev_instance;
+ u32 reg_mcu;
+ u32 reg;
+
+ /*
+ * Get the interrupt sources & saved to local variable.
+ * Write register value back to clear pending interrupts.
+ */
+ rt2x00pci_register_read(rt2x00dev, MCU_INT_SOURCE_CSR, &reg_mcu);
+ rt2x00pci_register_write(rt2x00dev, MCU_INT_SOURCE_CSR, reg_mcu);
+
+ rt2x00pci_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
+ rt2x00pci_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
+
+ if (!reg && !reg_mcu)
+ return IRQ_NONE;
+
+ if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+ return IRQ_HANDLED;
+
+ /* Store irqvalues for use in the interrupt thread. */
+ rt2x00dev->irqvalue[0] = reg;
+ rt2x00dev->irqvalue[1] = reg_mcu;
+
+ /* Disable interrupts, will be enabled again in the interrupt thread. */
+ rt2x00dev->ops->lib->set_device_state(rt2x00dev,
+ STATE_RADIO_IRQ_OFF_ISR);
+ return IRQ_WAKE_THREAD;
+}
+
/*
* Device probe functions.
*/
@@ -2577,6 +2621,18 @@ static int rt61pci_probe_hw_mode(struct rt2x00_dev *rt2x00dev)
EEPROM_MAC_ADDR_0));
/*
+ * As rt61 has a global fallback table we cannot specify
+ * more then one tx rate per frame but since the hw will
+ * try several rates (based on the fallback table) we should
+ * still initialize max_rates to the maximum number of rates
+ * we are going to try. Otherwise mac80211 will truncate our
+ * reported tx rates and the rc algortihm will end up with
+ * incorrect data.
+ */
+ rt2x00dev->hw->max_rates = 7;
+ rt2x00dev->hw->max_rate_tries = 1;
+
+ /*
* Initialize hw_mode information.
*/
spec->supported_bands = SUPPORT_BAND_2GHZ;
@@ -2657,6 +2713,7 @@ static int rt61pci_probe_hw(struct rt2x00_dev *rt2x00dev)
__set_bit(DRIVER_REQUIRE_DMA, &rt2x00dev->flags);
if (!modparam_nohwcrypt)
__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
+ __set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
/*
* Set the rssi offset.
@@ -2748,8 +2805,9 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = {
.remove_interface = rt2x00mac_remove_interface,
.config = rt2x00mac_config,
.configure_filter = rt2x00mac_configure_filter,
- .set_tim = rt2x00mac_set_tim,
.set_key = rt2x00mac_set_key,
+ .sw_scan_start = rt2x00mac_sw_scan_start,
+ .sw_scan_complete = rt2x00mac_sw_scan_complete,
.get_stats = rt2x00mac_get_stats,
.bss_info_changed = rt2x00mac_bss_info_changed,
.conf_tx = rt61pci_conf_tx,
@@ -2759,6 +2817,7 @@ static const struct ieee80211_ops rt61pci_mac80211_ops = {
static const struct rt2x00lib_ops rt61pci_rt2x00_ops = {
.irq_handler = rt61pci_interrupt,
+ .irq_handler_thread = rt61pci_interrupt_thread,
.probe_hw = rt61pci_probe_hw,
.get_firmware_name = rt61pci_get_firmware_name,
.check_firmware = rt61pci_check_firmware,
@@ -2773,7 +2832,6 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = {
.reset_tuner = rt61pci_reset_tuner,
.link_tuner = rt61pci_link_tuner,
.write_tx_desc = rt61pci_write_tx_desc,
- .write_tx_data = rt2x00pci_write_tx_data,
.write_beacon = rt61pci_write_beacon,
.kick_tx_queue = rt61pci_kick_tx_queue,
.kill_tx_queue = rt61pci_kill_tx_queue,