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path: root/drivers/net/wireless/rt2x00/rt2800pci.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2800pci.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2800pci.c239
1 files changed, 148 insertions, 91 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c
index 3b3f1e45ab3e..808073aa9dcc 100644
--- a/drivers/net/wireless/rt2x00/rt2800pci.c
+++ b/drivers/net/wireless/rt2x00/rt2800pci.c
@@ -200,11 +200,22 @@ static void rt2800pci_start_queue(struct data_queue *queue)
rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
break;
case QID_BEACON:
+ /*
+ * Allow beacon tasklets to be scheduled for periodic
+ * beacon updates.
+ */
+ tasklet_enable(&rt2x00dev->tbtt_tasklet);
+ tasklet_enable(&rt2x00dev->pretbtt_tasklet);
+
rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 1);
rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 1);
rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 1);
rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+
+ rt2800_register_read(rt2x00dev, INT_TIMER_EN, &reg);
+ rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER, 1);
+ rt2800_register_write(rt2x00dev, INT_TIMER_EN, reg);
break;
default:
break;
@@ -250,6 +261,16 @@ static void rt2800pci_stop_queue(struct data_queue *queue)
rt2x00_set_field32(&reg, BCN_TIME_CFG_TBTT_ENABLE, 0);
rt2x00_set_field32(&reg, BCN_TIME_CFG_BEACON_GEN, 0);
rt2800_register_write(rt2x00dev, BCN_TIME_CFG, reg);
+
+ rt2800_register_read(rt2x00dev, INT_TIMER_EN, &reg);
+ rt2x00_set_field32(&reg, INT_TIMER_EN_PRE_TBTT_TIMER, 0);
+ rt2800_register_write(rt2x00dev, INT_TIMER_EN, reg);
+
+ /*
+ * Wait for tbtt tasklets to finish.
+ */
+ tasklet_disable(&rt2x00dev->tbtt_tasklet);
+ tasklet_disable(&rt2x00dev->pretbtt_tasklet);
break;
default:
break;
@@ -397,9 +418,9 @@ static int rt2800pci_init_queues(struct rt2x00_dev *rt2x00dev)
static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
- int mask = (state == STATE_RADIO_IRQ_ON) ||
- (state == STATE_RADIO_IRQ_ON_ISR);
+ int mask = (state == STATE_RADIO_IRQ_ON);
u32 reg;
+ unsigned long flags;
/*
* When interrupts are being enabled, the interrupt registers
@@ -408,8 +429,17 @@ static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
if (state == STATE_RADIO_IRQ_ON) {
rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
rt2800_register_write(rt2x00dev, INT_SOURCE_CSR, reg);
+
+ /*
+ * Enable tasklets. The beacon related tasklets are
+ * enabled when the beacon queue is started.
+ */
+ tasklet_enable(&rt2x00dev->txstatus_tasklet);
+ tasklet_enable(&rt2x00dev->rxdone_tasklet);
+ tasklet_enable(&rt2x00dev->autowake_tasklet);
}
+ spin_lock_irqsave(&rt2x00dev->irqmask_lock, flags);
rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
rt2x00_set_field32(&reg, INT_MASK_CSR_RXDELAYINT, 0);
rt2x00_set_field32(&reg, INT_MASK_CSR_TXDELAYINT, 0);
@@ -430,6 +460,17 @@ static void rt2800pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
rt2x00_set_field32(&reg, INT_MASK_CSR_RX_COHERENT, 0);
rt2x00_set_field32(&reg, INT_MASK_CSR_TX_COHERENT, 0);
rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
+ spin_unlock_irqrestore(&rt2x00dev->irqmask_lock, flags);
+
+ if (state == STATE_RADIO_IRQ_OFF) {
+ /*
+ * Ensure that all tasklets are finished before
+ * disabling the interrupts.
+ */
+ tasklet_disable(&rt2x00dev->txstatus_tasklet);
+ tasklet_disable(&rt2x00dev->rxdone_tasklet);
+ tasklet_disable(&rt2x00dev->autowake_tasklet);
+ }
}
static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
@@ -452,6 +493,13 @@ static int rt2800pci_init_registers(struct rt2x00_dev *rt2x00dev)
rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
+ if (rt2x00_rt(rt2x00dev, RT5390)) {
+ rt2800_register_read(rt2x00dev, AUX_CTRL, &reg);
+ rt2x00_set_field32(&reg, AUX_CTRL_FORCE_PCIE_CLK, 1);
+ rt2x00_set_field32(&reg, AUX_CTRL_WAKE_PCIE_EN, 1);
+ rt2800_register_write(rt2x00dev, AUX_CTRL, reg);
+ }
+
rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0x00000003);
rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
@@ -475,39 +523,23 @@ static int rt2800pci_enable_radio(struct rt2x00_dev *rt2x00dev)
static void rt2800pci_disable_radio(struct rt2x00_dev *rt2x00dev)
{
- u32 reg;
-
- rt2800_disable_radio(rt2x00dev);
-
- rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00001280);
-
- rt2800_register_read(rt2x00dev, WPDMA_RST_IDX, &reg);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX0, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX1, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX2, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX3, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX4, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DTX_IDX5, 1);
- rt2x00_set_field32(&reg, WPDMA_RST_IDX_DRX_IDX0, 1);
- rt2800_register_write(rt2x00dev, WPDMA_RST_IDX, reg);
-
- rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e1f);
- rt2800_register_write(rt2x00dev, PBF_SYS_CTRL, 0x00000e00);
+ if (rt2x00_is_soc(rt2x00dev)) {
+ rt2800_disable_radio(rt2x00dev);
+ rt2800_register_write(rt2x00dev, PWR_PIN_CFG, 0);
+ rt2800_register_write(rt2x00dev, TX_PIN_CFG, 0);
+ }
}
static int rt2800pci_set_state(struct rt2x00_dev *rt2x00dev,
enum dev_state state)
{
- /*
- * Always put the device to sleep (even when we intend to wakeup!)
- * if the device is booting and wasn't asleep it will return
- * failure when attempting to wakeup.
- */
- rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0xff, 0xff, 2);
-
if (state == STATE_AWAKE) {
- rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKUP, 0, 0);
+ rt2800_mcu_request(rt2x00dev, MCU_WAKEUP, TOKEN_WAKUP, 0, 0x02);
rt2800pci_mcu_status(rt2x00dev, TOKEN_WAKUP);
+ } else if (state == STATE_SLEEP) {
+ rt2800_register_write(rt2x00dev, H2M_MAILBOX_STATUS, 0xffffffff);
+ rt2800_register_write(rt2x00dev, H2M_MAILBOX_CID, 0xffffffff);
+ rt2800_mcu_request(rt2x00dev, MCU_SLEEP, 0x01, 0xff, 0x01);
}
return 0;
@@ -538,9 +570,7 @@ static int rt2800pci_set_device_state(struct rt2x00_dev *rt2x00dev,
rt2800pci_set_state(rt2x00dev, STATE_SLEEP);
break;
case STATE_RADIO_IRQ_ON:
- case STATE_RADIO_IRQ_ON_ISR:
case STATE_RADIO_IRQ_OFF:
- case STATE_RADIO_IRQ_OFF_ISR:
rt2800pci_toggle_irq(rt2x00dev, state);
break;
case STATE_DEEP_SLEEP:
@@ -696,7 +726,7 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
while (kfifo_get(&rt2x00dev->txstatus_fifo, &status)) {
qid = rt2x00_get_field32(status, TX_STA_FIFO_PID_QUEUE);
- if (qid >= QID_RX) {
+ if (unlikely(qid >= QID_RX)) {
/*
* Unknown queue, this shouldn't happen. Just drop
* this tx status.
@@ -706,7 +736,7 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
break;
}
- queue = rt2x00queue_get_queue(rt2x00dev, qid);
+ queue = rt2x00queue_get_tx_queue(rt2x00dev, qid);
if (unlikely(queue == NULL)) {
/*
* The queue is NULL, this shouldn't happen. Stop
@@ -717,7 +747,7 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
break;
}
- if (rt2x00queue_empty(queue)) {
+ if (unlikely(rt2x00queue_empty(queue))) {
/*
* The queue is empty. Stop processing here
* and drop the tx status.
@@ -732,45 +762,59 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
}
}
-static void rt2800pci_txstatus_tasklet(unsigned long data)
+static void rt2800pci_enable_interrupt(struct rt2x00_dev *rt2x00dev,
+ struct rt2x00_field32 irq_field)
{
- rt2800pci_txdone((struct rt2x00_dev *)data);
-}
-
-static irqreturn_t rt2800pci_interrupt_thread(int irq, void *dev_instance)
-{
- struct rt2x00_dev *rt2x00dev = dev_instance;
- u32 reg = rt2x00dev->irqvalue[0];
+ u32 reg;
/*
- * 1 - Pre TBTT interrupt.
+ * Enable a single interrupt. The interrupt mask register
+ * access needs locking.
*/
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
- rt2x00lib_pretbtt(rt2x00dev);
+ spin_lock_irq(&rt2x00dev->irqmask_lock);
+ rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
+ rt2x00_set_field32(&reg, irq_field, 1);
+ rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
+ spin_unlock_irq(&rt2x00dev->irqmask_lock);
+}
- /*
- * 2 - Beacondone interrupt.
- */
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
- rt2x00lib_beacondone(rt2x00dev);
+static void rt2800pci_txstatus_tasklet(unsigned long data)
+{
+ rt2800pci_txdone((struct rt2x00_dev *)data);
/*
- * 3 - Rx ring done interrupt.
+ * 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.
*/
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
- rt2x00pci_rxdone(rt2x00dev);
+}
- /*
- * 4 - Auto wakeup interrupt.
- */
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
- rt2800pci_wakeup(rt2x00dev);
+static void rt2800pci_pretbtt_tasklet(unsigned long data)
+{
+ struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+ rt2x00lib_pretbtt(rt2x00dev);
+ rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_PRE_TBTT);
+}
- /* Enable interrupts again. */
- rt2x00dev->ops->lib->set_device_state(rt2x00dev,
- STATE_RADIO_IRQ_ON_ISR);
+static void rt2800pci_tbtt_tasklet(unsigned long data)
+{
+ struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+ rt2x00lib_beacondone(rt2x00dev);
+ rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_TBTT);
+}
- return IRQ_HANDLED;
+static void rt2800pci_rxdone_tasklet(unsigned long data)
+{
+ struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+ rt2x00pci_rxdone(rt2x00dev);
+ rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_RX_DONE);
+}
+
+static void rt2800pci_autowake_tasklet(unsigned long data)
+{
+ struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
+ rt2800pci_wakeup(rt2x00dev);
+ rt2800pci_enable_interrupt(rt2x00dev, INT_MASK_CSR_AUTO_WAKEUP);
}
static void rt2800pci_txstatus_interrupt(struct rt2x00_dev *rt2x00dev)
@@ -791,7 +835,7 @@ static void rt2800pci_txstatus_interrupt(struct rt2x00_dev *rt2x00dev)
*
* Furthermore we don't disable the TX_FIFO_STATUS
* interrupt here but leave it enabled so that the TX_STA_FIFO
- * can also be read while the interrupt thread gets executed.
+ * can also be read while the tx status tasklet gets executed.
*
* Since we have only one producer and one consumer we don't
* need to lock the kfifo.
@@ -816,8 +860,7 @@ static void rt2800pci_txstatus_interrupt(struct rt2x00_dev *rt2x00dev)
static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
{
struct rt2x00_dev *rt2x00dev = dev_instance;
- u32 reg;
- irqreturn_t ret = IRQ_HANDLED;
+ u32 reg, mask;
/* Read status and ACK all interrupts */
rt2800_register_read(rt2x00dev, INT_SOURCE_CSR, &reg);
@@ -829,38 +872,44 @@ static irqreturn_t rt2800pci_interrupt(int irq, void *dev_instance)
if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
return IRQ_HANDLED;
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS))
- rt2800pci_txstatus_interrupt(rt2x00dev);
+ /*
+ * Since INT_MASK_CSR and INT_SOURCE_CSR use the same bits
+ * for interrupts and interrupt masks we can just use the value of
+ * INT_SOURCE_CSR to create the interrupt mask.
+ */
+ mask = ~reg;
- if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT) ||
- rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT) ||
- rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE) ||
- rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP)) {
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TX_FIFO_STATUS)) {
+ rt2800pci_txstatus_interrupt(rt2x00dev);
/*
- * All other interrupts are handled in the interrupt thread.
- * Store irqvalue for use in the interrupt thread.
+ * Never disable the TX_FIFO_STATUS interrupt.
*/
- rt2x00dev->irqvalue[0] = reg;
+ rt2x00_set_field32(&mask, INT_MASK_CSR_TX_FIFO_STATUS, 1);
+ }
- /*
- * Disable interrupts, will be enabled again in the
- * interrupt thread.
- */
- rt2x00dev->ops->lib->set_device_state(rt2x00dev,
- STATE_RADIO_IRQ_OFF_ISR);
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_PRE_TBTT))
+ tasklet_hi_schedule(&rt2x00dev->pretbtt_tasklet);
- /*
- * Leave the TX_FIFO_STATUS interrupt enabled to not lose any
- * tx status reports.
- */
- rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
- rt2x00_set_field32(&reg, INT_MASK_CSR_TX_FIFO_STATUS, 1);
- rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_TBTT))
+ tasklet_hi_schedule(&rt2x00dev->tbtt_tasklet);
- ret = IRQ_WAKE_THREAD;
- }
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_RX_DONE))
+ tasklet_schedule(&rt2x00dev->rxdone_tasklet);
- return ret;
+ if (rt2x00_get_field32(reg, INT_SOURCE_CSR_AUTO_WAKEUP))
+ tasklet_schedule(&rt2x00dev->autowake_tasklet);
+
+ /*
+ * Disable all interrupts for which a tasklet was scheduled right now,
+ * the tasklet will reenable the appropriate interrupts.
+ */
+ spin_lock(&rt2x00dev->irqmask_lock);
+ rt2800_register_read(rt2x00dev, INT_MASK_CSR, &reg);
+ reg &= mask;
+ rt2800_register_write(rt2x00dev, INT_MASK_CSR, reg);
+ spin_unlock(&rt2x00dev->irqmask_lock);
+
+ return IRQ_HANDLED;
}
/*
@@ -928,6 +977,7 @@ static int rt2800pci_probe_hw(struct rt2x00_dev *rt2x00dev)
if (!modparam_nohwcrypt)
__set_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags);
__set_bit(DRIVER_SUPPORT_LINK_TUNING, &rt2x00dev->flags);
+ __set_bit(DRIVER_REQUIRE_HT_TX_DESC, &rt2x00dev->flags);
/*
* Set the rssi offset.
@@ -975,8 +1025,11 @@ static const struct rt2800_ops rt2800pci_rt2800_ops = {
static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
.irq_handler = rt2800pci_interrupt,
- .irq_handler_thread = rt2800pci_interrupt_thread,
- .txstatus_tasklet = rt2800pci_txstatus_tasklet,
+ .txstatus_tasklet = rt2800pci_txstatus_tasklet,
+ .pretbtt_tasklet = rt2800pci_pretbtt_tasklet,
+ .tbtt_tasklet = rt2800pci_tbtt_tasklet,
+ .rxdone_tasklet = rt2800pci_rxdone_tasklet,
+ .autowake_tasklet = rt2800pci_autowake_tasklet,
.probe_hw = rt2800pci_probe_hw,
.get_firmware_name = rt2800pci_get_firmware_name,
.check_firmware = rt2800_check_firmware,
@@ -996,6 +1049,7 @@ static const struct rt2x00lib_ops rt2800pci_rt2x00_ops = {
.write_tx_desc = rt2800pci_write_tx_desc,
.write_tx_data = rt2800_write_tx_data,
.write_beacon = rt2800_write_beacon,
+ .clear_beacon = rt2800_clear_beacon,
.fill_rxdone = rt2800pci_fill_rxdone,
.config_shared_key = rt2800_config_shared_key,
.config_pairwise_key = rt2800_config_pairwise_key,
@@ -1079,6 +1133,9 @@ static DEFINE_PCI_DEVICE_TABLE(rt2800pci_device_table) = {
{ PCI_DEVICE(0x1814, 0x3592), PCI_DEVICE_DATA(&rt2800pci_ops) },
{ PCI_DEVICE(0x1814, 0x3593), PCI_DEVICE_DATA(&rt2800pci_ops) },
#endif
+#ifdef CONFIG_RT2800PCI_RT53XX
+ { PCI_DEVICE(0x1814, 0x5390), PCI_DEVICE_DATA(&rt2800pci_ops) },
+#endif
{ 0, }
};
#endif /* CONFIG_PCI */