diff options
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-tx.c | 33 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans.c | 56 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-tx.c | 17 |
7 files changed, 59 insertions, 55 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index 25a592a656a4..a926142f470f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -2310,7 +2310,7 @@ void iwlagn_stop_device(struct iwl_priv *priv) * already dead. */ if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) { - iwlagn_txq_ctx_stop(priv); + priv->trans.ops->tx_stop(priv); priv->trans.ops->rx_stop(priv); /* Power-down device's busmaster DMA clocks */ diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c index c90c78a081dd..f29b31d73be6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c @@ -851,39 +851,6 @@ static inline void iwlagn_free_dma_ptr(struct iwl_priv *priv, memset(ptr, 0, sizeof(*ptr)); } -/** - * iwlagn_txq_ctx_stop - Stop all Tx DMA channels - */ -void iwlagn_txq_ctx_stop(struct iwl_priv *priv) -{ - int ch, txq_id; - unsigned long flags; - - /* Turn off all Tx DMA fifos */ - spin_lock_irqsave(&priv->lock, flags); - - iwlagn_txq_set_sched(priv, 0); - - /* Stop each Tx DMA channel, and wait for it to be idle */ - for (ch = 0; ch < priv->hw_params.dma_chnl_num; ch++) { - iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0); - if (iwl_poll_direct_bit(priv, FH_TSSR_TX_STATUS_REG, - FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), - 1000)) - IWL_ERR(priv, "Failing on timeout while stopping" - " DMA channel %d [0x%08x]", ch, - iwl_read_direct32(priv, FH_TSSR_TX_STATUS_REG)); - } - spin_unlock_irqrestore(&priv->lock, flags); - - if (!priv->txq) - return; - - /* Unmap DMA from host system and free skb's */ - for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) - iwl_tx_queue_unmap(priv, txq_id); -} - /* * Find first available (lowest unused) Tx Queue, mark it "active". * Called only when finding queue for aggregation. diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h index 0fa379b4f46b..ff0b2ed71237 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.h +++ b/drivers/net/wireless/iwlwifi/iwl-agn.h @@ -217,7 +217,6 @@ int iwlagn_txq_check_empty(struct iwl_priv *priv, void iwlagn_rx_reply_compressed_ba(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb); int iwlagn_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index); -void iwlagn_txq_ctx_stop(struct iwl_priv *priv); static inline u32 iwl_tx_status_to_mac80211(u32 status) { diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index 7d8be6b26acd..76f65350ebc3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -384,7 +384,6 @@ void iwl_chswitch_done(struct iwl_priv *priv, bool is_success); void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq); int iwl_queue_init(struct iwl_priv *priv, struct iwl_queue *q, int count, int slots_num, u32 id); -void iwl_tx_queue_unmap(struct iwl_priv *priv, int txq_id); void iwl_setup_watchdog(struct iwl_priv *priv); /***************************************************** * TX power diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 8611cf0e5556..85e4fa350371 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -694,8 +694,6 @@ struct iwl_hw_params { ****************************************************************************/ extern void iwl_update_chain_flags(struct iwl_priv *priv); extern const u8 iwl_bcast_addr[ETH_ALEN]; -extern int iwl_rxq_stop(struct iwl_priv *priv); -extern void iwl_txq_ctx_stop(struct iwl_priv *priv); extern int iwl_queue_space(const struct iwl_queue *q); static inline int iwl_queue_used(const struct iwl_queue *q, int i) { @@ -1234,6 +1232,7 @@ struct iwl_trans; * @rx_stop: stop the rx * @rx_free: frees the rx memory * @tx_init:inits the tx memory, allocate if needed + * @tx_stop: stop the tx * @tx_free: frees the tx memory */ struct iwl_trans_ops { @@ -1242,6 +1241,7 @@ struct iwl_trans_ops { void (*rx_free)(struct iwl_priv *priv); int (*tx_init)(struct iwl_priv *priv); + int (*tx_stop)(struct iwl_priv *priv); void (*tx_free)(struct iwl_priv *priv); }; diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c index c4cd363d81f2..81716fdd593a 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans.c @@ -328,6 +328,24 @@ static int iwl_trans_txq_init(struct iwl_priv *priv, struct iwl_tx_queue *txq, } /** + * iwl_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's + */ +static void iwl_tx_queue_unmap(struct iwl_priv *priv, int txq_id) +{ + struct iwl_tx_queue *txq = &priv->txq[txq_id]; + struct iwl_queue *q = &txq->q; + + if (!q->n_bd) + return; + + while (q->write_ptr != q->read_ptr) { + /* The read_ptr needs to bound by q->n_window */ + iwlagn_txq_free_tfd(priv, txq, get_cmd_index(q, q->read_ptr)); + q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd); + } +} + +/** * iwl_tx_queue_free - Deallocate DMA queue. * @txq: Transmit queue to deallocate. * @@ -497,12 +515,50 @@ error: return ret; } +/** + * iwlagn_txq_ctx_stop - Stop all Tx DMA channels + */ +static int iwl_trans_tx_stop(struct iwl_priv *priv) +{ + int ch, txq_id; + unsigned long flags; + + /* Turn off all Tx DMA fifos */ + spin_lock_irqsave(&priv->lock, flags); + + iwlagn_txq_set_sched(priv, 0); + + /* Stop each Tx DMA channel, and wait for it to be idle */ + for (ch = 0; ch < priv->hw_params.dma_chnl_num; ch++) { + iwl_write_direct32(priv, FH_TCSR_CHNL_TX_CONFIG_REG(ch), 0x0); + if (iwl_poll_direct_bit(priv, FH_TSSR_TX_STATUS_REG, + FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(ch), + 1000)) + IWL_ERR(priv, "Failing on timeout while stopping" + " DMA channel %d [0x%08x]", ch, + iwl_read_direct32(priv, FH_TSSR_TX_STATUS_REG)); + } + spin_unlock_irqrestore(&priv->lock, flags); + + if (!priv->txq) { + IWL_WARN(priv, "Stopping tx queues that aren't allocated..."); + return 0; + } + + /* Unmap DMA from host system and free skb's */ + for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) + iwl_tx_queue_unmap(priv, txq_id); + + return 0; +} + static const struct iwl_trans_ops trans_ops = { .rx_init = iwl_trans_rx_init, .rx_stop = iwl_trans_rx_stop, .rx_free = iwl_trans_rx_free, .tx_init = iwl_trans_tx_init, + .tx_stop = iwl_trans_tx_stop, .tx_free = iwl_trans_tx_free, }; diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c index 36b643a385be..b62d03235b8c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-tx.c +++ b/drivers/net/wireless/iwlwifi/iwl-tx.c @@ -221,23 +221,6 @@ int iwlagn_txq_attach_buf_to_tfd(struct iwl_priv *priv, return 0; } -/** - * iwl_tx_queue_unmap - Unmap any remaining DMA mappings and free skb's - */ -void iwl_tx_queue_unmap(struct iwl_priv *priv, int txq_id) -{ - struct iwl_tx_queue *txq = &priv->txq[txq_id]; - struct iwl_queue *q = &txq->q; - - if (q->n_bd == 0) - return; - - while (q->write_ptr != q->read_ptr) { - iwlagn_txq_free_tfd(priv, txq, get_cmd_index(q, q->read_ptr)); - q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd); - } -} - /*************** DMA-QUEUE-GENERAL-FUNCTIONS ***** * DMA services * |