From 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3 Mon Sep 17 00:00:00 2001 From: Holger Schurig Date: Tue, 1 Apr 2008 14:50:43 +0200 Subject: libertas: convert libertas driver to use an event/cmdresp queue This patch (co-developed by Dan Williams and Holger Schurig) uses a kfifo object for events and a swapping buffer scheme for the command response to preserve the zero-copy semantics of the CF driver and keep memory usage low. The main thread should only ever touch the buffer indexed by priv->resp_idx, while the interface code is free to write to the second buffer, then swap priv->resp_idx under the driver spinlock. The firmware specs only permit one in-flight command, so there will only ever be one command response to process at a time. Signed-off-by: Holger Schurig Signed-off-by: Dan Williams Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/decl.h | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/net/wireless/libertas/decl.h') diff --git a/drivers/net/wireless/libertas/decl.h b/drivers/net/wireless/libertas/decl.h index 4aea421f07c..b652fa301e1 100644 --- a/drivers/net/wireless/libertas/decl.h +++ b/drivers/net/wireless/libertas/decl.h @@ -19,7 +19,7 @@ struct cmd_ds_command; void lbs_set_mac_control(struct lbs_private *priv); -void lbs_send_tx_feedback(struct lbs_private *priv); +void lbs_send_tx_feedback(struct lbs_private *priv, u32 try_count); int lbs_free_cmd_buffer(struct lbs_private *priv); @@ -30,14 +30,16 @@ int lbs_prepare_and_send_command(struct lbs_private *priv, int lbs_allocate_cmd_buffer(struct lbs_private *priv); int lbs_execute_next_command(struct lbs_private *priv); -int lbs_process_event(struct lbs_private *priv); -void lbs_interrupt(struct lbs_private *priv); +int lbs_process_event(struct lbs_private *priv, u32 event); +void lbs_queue_event(struct lbs_private *priv, u32 event); +void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx); + int lbs_set_radio_control(struct lbs_private *priv); u32 lbs_fw_index_to_data_rate(u8 index); u8 lbs_data_rate_to_fw_index(u32 rate); /** The proc fs interface */ -int lbs_process_rx_command(struct lbs_private *priv); +int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len); void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd, int result); int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev); -- cgit v1.2.3