rt2x00: Introduce 3 queue commands in drivers (start, kick, stop).

As part of the queue refactoring, we now introduce
3 queue commands: start, kick, stop.

 - Start: will enable a queue, for TX this will
   not mean anything, while for beacons and RX
   this will update the registers to enable the queue.
 - Kick: This will kick all pending frames to
   the hardware. This is needed for the TX queue
   to push all frames to the HW after the queue
   has been started
 - Stop: This will stop the queue in the hardware,
   and cancel any pending work (So this doesn't
   mean the queue is empty after a stop!).

Move all code from the drivers into the appropriate
functions, and link those calls to the old rt2x00lib
callback functions (we will fix this later when we
refactor the queue control inside rt2x00lib).

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 105 insertions, 49 deletions

diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c
index 6ad0c1c9ce4e..044f500ff1ab 100644
--- a/drivers/net/wireless/rt2x00/rt61pci.c
+++ b/drivers/net/wireless/rt2x00/rt61pci.c
@@ -1140,6 +1140,106 @@ dynamic_cca_tune:
 }
 
 /*
+ * Queue handlers.
+ */
+static void rt61pci_start_queue(struct data_queue *queue)
+{
+	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+	u32 reg;
+
+	switch (queue->qid) {
+	case QID_RX:
+		rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, &reg);
+		rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 0);
+		rt2x00pci_register_write(rt2x00dev, TXRX_CSR0, reg);
+		break;
+	case QID_BEACON:
+		rt2x00pci_register_read(rt2x00dev, TXRX_CSR9, &reg);
+		rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 1);
+		rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 1);
+		rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 1);
+		rt2x00pci_register_write(rt2x00dev, TXRX_CSR9, reg);
+		break;
+	default:
+		break;
+	}
+}
+
+static void rt61pci_kick_queue(struct data_queue *queue)
+{
+	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+	u32 reg;
+
+	switch (queue->qid) {
+	case QID_AC_BE:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC0, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_BK:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC1, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_VI:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC2, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_VO:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC3, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	default:
+		break;
+	}
+}
+
+static void rt61pci_stop_queue(struct data_queue *queue)
+{
+	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+	u32 reg;
+
+	switch (queue->qid) {
+	case QID_AC_BE:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC0, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_BK:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC1, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_VI:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC2, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_AC_VO:
+		rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
+		rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC3, 1);
+		rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
+		break;
+	case QID_RX:
+		rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, &reg);
+		rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX, 1);
+		rt2x00pci_register_write(rt2x00dev, TXRX_CSR0, reg);
+		break;
+	case QID_BEACON:
+		rt2x00pci_register_read(rt2x00dev, TXRX_CSR9, &reg);
+		rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 0);
+		rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 0);
+		rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
+		rt2x00pci_register_write(rt2x00dev, TXRX_CSR9, reg);
+		break;
+	default:
+		break;
+	}
+}
+
+/*
  * Firmware functions
  */
 static char *rt61pci_get_firmware_name(struct rt2x00_dev *rt2x00dev)
@@ -1616,17 +1716,6 @@ static int rt61pci_init_bbp(struct rt2x00_dev *rt2x00dev)
 /*
  * Device state switch handlers.
  */
-static void rt61pci_toggle_rx(struct rt2x00_dev *rt2x00dev,
-			      enum dev_state state)
-{
-	u32 reg;
-
-	rt2x00pci_register_read(rt2x00dev, TXRX_CSR0, &reg);
-	rt2x00_set_field32(&reg, TXRX_CSR0_DISABLE_RX,
-			   (state == STATE_RADIO_RX_OFF));
-	rt2x00pci_register_write(rt2x00dev, TXRX_CSR0, reg);
-}
-
 static void rt61pci_toggle_irq(struct rt2x00_dev *rt2x00dev,
 			       enum dev_state state)
 {
@@ -1744,8 +1833,10 @@ static int rt61pci_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt61pci_disable_radio(rt2x00dev);
 		break;
 	case STATE_RADIO_RX_ON:
+		rt61pci_start_queue(rt2x00dev->rx);
+		break;
 	case STATE_RADIO_RX_OFF:
-		rt61pci_toggle_rx(rt2x00dev, state);
+		rt61pci_stop_queue(rt2x00dev->rx);
 		break;
 	case STATE_RADIO_IRQ_ON:
 	case STATE_RADIO_IRQ_ON_ISR:
@@ -1925,41 +2016,6 @@ static void rt61pci_write_beacon(struct queue_entry *entry,
 	entry->skb = NULL;
 }
 
-static void rt61pci_kick_tx_queue(struct data_queue *queue)
-{
-	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
-	u32 reg;
-
-	rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC0, (queue->qid == QID_AC_BE));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC1, (queue->qid == QID_AC_BK));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC2, (queue->qid == QID_AC_VI));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_KICK_TX_AC3, (queue->qid == QID_AC_VO));
-	rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
-}
-
-static void rt61pci_kill_tx_queue(struct data_queue *queue)
-{
-	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
-	u32 reg;
-
-	if (queue->qid == QID_BEACON) {
-		rt2x00pci_register_read(rt2x00dev, TXRX_CSR9, &reg);
-		rt2x00_set_field32(&reg, TXRX_CSR9_TSF_TICKING, 0);
-		rt2x00_set_field32(&reg, TXRX_CSR9_TBTT_ENABLE, 0);
-		rt2x00_set_field32(&reg, TXRX_CSR9_BEACON_GEN, 0);
-		rt2x00pci_register_write(rt2x00dev, TXRX_CSR9, reg);
-		return;
-	}
-
-	rt2x00pci_register_read(rt2x00dev, TX_CNTL_CSR, &reg);
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC0, (queue->qid == QID_AC_BE));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC1, (queue->qid == QID_AC_BK));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC2, (queue->qid == QID_AC_VI));
-	rt2x00_set_field32(&reg, TX_CNTL_CSR_ABORT_TX_AC3, (queue->qid == QID_AC_VO));
-	rt2x00pci_register_write(rt2x00dev, TX_CNTL_CSR, reg);
-}
-
 /*
  * RX control handlers
  */
@@ -2846,8 +2902,8 @@ static const struct rt2x00lib_ops rt61pci_rt2x00_ops = {
 	.link_tuner		= rt61pci_link_tuner,
 	.write_tx_desc		= rt61pci_write_tx_desc,
 	.write_beacon		= rt61pci_write_beacon,
-	.kick_tx_queue		= rt61pci_kick_tx_queue,
-	.kill_tx_queue		= rt61pci_kill_tx_queue,
+	.kick_tx_queue		= rt61pci_kick_queue,
+	.kill_tx_queue		= rt61pci_stop_queue,
 	.fill_rxdone		= rt61pci_fill_rxdone,
 	.config_shared_key	= rt61pci_config_shared_key,
 	.config_pairwise_key	= rt61pci_config_pairwise_key,