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, 55 insertions, 29 deletions

diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c
index 1dfa59da927..ee51936d8d1 100644
--- a/drivers/net/wireless/rt2x00/rt2800usb.c
+++ b/drivers/net/wireless/rt2x00/rt2800usb.c
@@ -50,6 +50,57 @@ module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
 
 /*
+ * Queue handlers.
+ */
+static void rt2800usb_start_queue(struct data_queue *queue)
+{
+	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+	u32 reg;
+
+	switch (queue->qid) {
+	case QID_RX:
+		rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
+		rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 1);
+		rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
+		break;
+	case QID_BEACON:
+		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);
+		break;
+	default:
+		break;
+	}
+}
+
+static void rt2800usb_stop_queue(struct data_queue *queue)
+{
+	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
+	u32 reg;
+
+	switch (queue->qid) {
+	case QID_RX:
+		rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
+		rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX, 0);
+		rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
+		break;
+	case QID_BEACON:
+		rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
+		rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
+		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);
+		break;
+	default:
+		break;
+	}
+
+	rt2x00usb_stop_queue(queue);
+}
+
+/*
  * Firmware functions
  */
 static char *rt2800usb_get_firmware_name(struct rt2x00_dev *rt2x00dev)
@@ -107,17 +158,6 @@ static int rt2800usb_write_firmware(struct rt2x00_dev *rt2x00dev,
 /*
  * Device state switch handlers.
  */
-static void rt2800usb_toggle_rx(struct rt2x00_dev *rt2x00dev,
-				enum dev_state state)
-{
-	u32 reg;
-
-	rt2800_register_read(rt2x00dev, MAC_SYS_CTRL, &reg);
-	rt2x00_set_field32(&reg, MAC_SYS_CTRL_ENABLE_RX,
-			   (state == STATE_RADIO_RX_ON));
-	rt2800_register_write(rt2x00dev, MAC_SYS_CTRL, reg);
-}
-
 static int rt2800usb_init_registers(struct rt2x00_dev *rt2x00dev)
 {
 	u32 reg;
@@ -215,8 +255,10 @@ static int rt2800usb_set_device_state(struct rt2x00_dev *rt2x00dev,
 		rt2800usb_set_state(rt2x00dev, STATE_SLEEP);
 		break;
 	case STATE_RADIO_RX_ON:
+		rt2800usb_start_queue(rt2x00dev->rx);
+		break;
 	case STATE_RADIO_RX_OFF:
-		rt2800usb_toggle_rx(rt2x00dev, state);
+		rt2800usb_stop_queue(rt2x00dev->rx);
 		break;
 	case STATE_RADIO_IRQ_ON:
 	case STATE_RADIO_IRQ_ON_ISR:
@@ -389,22 +431,6 @@ static void rt2800usb_work_txdone(struct work_struct *work)
 	}
 }
 
-static void rt2800usb_kill_tx_queue(struct data_queue *queue)
-{
-	struct rt2x00_dev *rt2x00dev = queue->rt2x00dev;
-	u32 reg;
-
-	if (queue->qid == QID_BEACON) {
-		rt2800_register_read(rt2x00dev, BCN_TIME_CFG, &reg);
-		rt2x00_set_field32(&reg, BCN_TIME_CFG_TSF_TICKING, 0);
-		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);
-	}
-
-	rt2x00usb_kill_tx_queue(queue);
-}
-
 /*
  * RX control handlers
  */
@@ -605,7 +631,7 @@ static const struct rt2x00lib_ops rt2800usb_rt2x00_ops = {
 	.write_beacon		= rt2800_write_beacon,
 	.get_tx_data_len	= rt2800usb_get_tx_data_len,
 	.kick_tx_queue		= rt2x00usb_kick_tx_queue,
-	.kill_tx_queue		= rt2800usb_kill_tx_queue,
+	.kill_tx_queue		= rt2800usb_stop_queue,
 	.fill_rxdone		= rt2800usb_fill_rxdone,
 	.config_shared_key	= rt2800_config_shared_key,
 	.config_pairwise_key	= rt2800_config_pairwise_key,