From: Zhu Yi <yi.zhu@intel.com>
To: linville@tuxdriver.com
Cc: linux-wireless@vger.kernel.org, Tomas Winkler <tomas.winkler@intel.com>
Subject: [PATCH 27/43] iwlwifi: move tx reclaim flow into iwl-tx
Date: Thu, 29 May 2008 16:35:12 +0800 [thread overview]
Message-ID: <1212050128-17132-28-git-send-email-yi.zhu@intel.com> (raw)
In-Reply-To: <1212050128-17132-27-git-send-email-yi.zhu@intel.com>
From: Tomas Winkler <tomas.winkler@intel.com>
This patch
1. moves TX reclaim flow into iwl-tx
2. separates command queue and tx queue reclaim flow
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/net/wireless/iwlwifi/iwl-4965.c | 6 +-
drivers/net/wireless/iwlwifi/iwl-5000.c | 4 +-
drivers/net/wireless/iwlwifi/iwl-core.h | 2 +
drivers/net/wireless/iwlwifi/iwl-dev.h | 1 -
drivers/net/wireless/iwlwifi/iwl-tx.c | 108 +++++++++++++++++++++++++++
drivers/net/wireless/iwlwifi/iwl4965-base.c | 93 +-----------------------
6 files changed, 116 insertions(+), 98 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 98f3df0..1d95e8c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -3132,7 +3132,7 @@ static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
/* calculate mac80211 ampdu sw queue to wake */
int ampdu_q =
scd_flow - IWL_BACK_QUEUE_FIRST_ID + priv->hw->queues;
- int freed = iwl4965_tx_queue_reclaim(priv, scd_flow, index);
+ int freed = iwl_tx_queue_reclaim(priv, scd_flow, index);
priv->stations[ba_resp->sta_id].
tid[ba_resp->tid].tfds_in_queue -= freed;
if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
@@ -3673,7 +3673,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
"%d index %d\n", scd_ssn , index);
- freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+ freed = iwl_tx_queue_reclaim(priv, txq_id, index);
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
@@ -3705,7 +3705,7 @@ static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
#ifdef CONFIG_IWL4965_HT
if (index != -1) {
- int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+ int freed = iwl_tx_queue_reclaim(priv, txq_id, index);
if (tid != MAX_TID_COUNT)
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index cfabcb0..dc9f3b6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -1159,7 +1159,7 @@ static void iwl5000_rx_reply_tx(struct iwl_priv *priv,
index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
"%d index %d\n", scd_ssn , index);
- freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+ freed = iwl_tx_queue_reclaim(priv, txq_id, index);
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
@@ -1191,7 +1191,7 @@ static void iwl5000_rx_reply_tx(struct iwl_priv *priv,
IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
#ifdef CONFIG_IWL4965_HT
if (index != -1) {
- int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
+ int freed = iwl_tx_queue_reclaim(priv, txq_id, index);
if (tid != MAX_TID_COUNT)
priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 9449b61..8264b4e 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -205,6 +205,8 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
int iwl_rx_queue_restock(struct iwl_priv *priv);
int iwl_rx_queue_space(const struct iwl_rx_queue *q);
void iwl_rx_allocate(struct iwl_priv *priv);
+void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
+int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
/* Handlers */
void iwl_rx_missed_beacon_notif(struct iwl_priv *priv,
struct iwl_rx_mem_buffer *rxb);
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 9343313..8c258d6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -714,7 +714,6 @@ extern int iwl4965_get_temperature(const struct iwl_priv *priv);
extern u8 iwl_find_station(struct iwl_priv *priv, const u8 *bssid);
extern int iwl4965_hw_channel_switch(struct iwl_priv *priv, u16 channel);
-extern int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index);
extern int iwl_queue_space(const struct iwl_queue *q);
static inline int iwl_queue_used(const struct iwl_queue *q, int i)
{
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 885a4c1..b2b2ed2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -1060,6 +1060,114 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
return ret ? ret : idx;
}
+int iwl_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
+{
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct iwl_queue *q = &txq->q;
+ struct iwl_tx_info *tx_info;
+ int nfreed = 0;
+
+ if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
+ IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
+ "is out of range [0-%d] %d %d.\n", txq_id,
+ index, q->n_bd, q->write_ptr, q->read_ptr);
+ return 0;
+ }
+
+ for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+
+ tx_info = &txq->txb[txq->q.read_ptr];
+ ieee80211_tx_status_irqsafe(priv->hw, tx_info->skb[0]);
+ tx_info->skb[0] = NULL;
+ iwl_hw_txq_free_tfd(priv, txq);
+
+ nfreed++;
+ }
+ return nfreed;
+}
+EXPORT_SYMBOL(iwl_tx_queue_reclaim);
+
+
+/**
+ * iwl_hcmd_queue_reclaim - Reclaim TX command queue entries already Tx'd
+ *
+ * When FW advances 'R' index, all entries between old and new 'R' index
+ * need to be reclaimed. As result, some free space forms. If there is
+ * enough free space (> low mark), wake the stack that feeds us.
+ */
+static void iwl_hcmd_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
+{
+ struct iwl_tx_queue *txq = &priv->txq[txq_id];
+ struct iwl_queue *q = &txq->q;
+ int nfreed = 0;
+
+ if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
+ IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
+ "is out of range [0-%d] %d %d.\n", txq_id,
+ index, q->n_bd, q->write_ptr, q->read_ptr);
+ return;
+ }
+
+ for (index = iwl_queue_inc_wrap(index, q->n_bd); q->read_ptr != index;
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
+
+ if (nfreed > 1) {
+ IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
+ q->write_ptr, q->read_ptr);
+ queue_work(priv->workqueue, &priv->restart);
+ }
+ nfreed++;
+ }
+}
+
+/**
+ * iwl_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
+ * @rxb: Rx buffer to reclaim
+ *
+ * If an Rx buffer has an async callback associated with it the callback
+ * will be executed. The attached skb (if present) will only be freed
+ * if the callback returns 1
+ */
+void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
+{
+ struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
+ u16 sequence = le16_to_cpu(pkt->hdr.sequence);
+ int txq_id = SEQ_TO_QUEUE(sequence);
+ int index = SEQ_TO_INDEX(sequence);
+ int huge = sequence & SEQ_HUGE_FRAME;
+ int cmd_index;
+ struct iwl_cmd *cmd;
+
+ /* If a Tx command is being handled and it isn't in the actual
+ * command queue then there a command routing bug has been introduced
+ * in the queue management code. */
+ if (txq_id != IWL_CMD_QUEUE_NUM)
+ IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
+ txq_id, pkt->hdr.cmd);
+ BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
+
+ cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
+ cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
+
+ /* Input error checking is done when commands are added to queue. */
+ if (cmd->meta.flags & CMD_WANT_SKB) {
+ cmd->meta.source->u.skb = rxb->skb;
+ rxb->skb = NULL;
+ } else if (cmd->meta.u.callback &&
+ !cmd->meta.u.callback(priv, cmd, rxb->skb))
+ rxb->skb = NULL;
+
+ iwl_hcmd_queue_reclaim(priv, txq_id, index);
+
+ if (!(cmd->meta.flags & CMD_ASYNC)) {
+ clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
+ wake_up_interruptible(&priv->wait_command_queue);
+ }
+}
+EXPORT_SYMBOL(iwl_tx_cmd_complete);
+
+
#ifdef CONFIG_IWLWIF_DEBUG
#define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 10d7734..4322cd6 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -1535,51 +1535,6 @@ static int iwl4965_get_measurement(struct iwl_priv *priv,
}
#endif
-static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
- struct iwl_tx_info *tx_sta)
-{
- ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
- tx_sta->skb[0] = NULL;
-}
-
-/**
- * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
- *
- * When FW advances 'R' index, all entries between old and new 'R' index
- * need to be reclaimed. As result, some free space forms. If there is
- * enough free space (> low mark), wake the stack that feeds us.
- */
-int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
-{
- struct iwl_tx_queue *txq = &priv->txq[txq_id];
- struct iwl_queue *q = &txq->q;
- int nfreed = 0;
-
- if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
- IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
- "is out of range [0-%d] %d %d.\n", txq_id,
- index, q->n_bd, q->write_ptr, q->read_ptr);
- return 0;
- }
-
- for (index = iwl_queue_inc_wrap(index, q->n_bd);
- q->read_ptr != index;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
- if (txq_id != IWL_CMD_QUEUE_NUM) {
- iwl4965_txstatus_to_ieee(priv,
- &(txq->txb[txq->q.read_ptr]));
- iwl_hw_txq_free_tfd(priv, txq);
- } else if (nfreed > 1) {
- IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
- q->write_ptr, q->read_ptr);
- queue_work(priv->workqueue, &priv->restart);
- }
- nfreed++;
- }
-
- return nfreed;
-}
-
/******************************************************************************
*
* Generic RX handler implementations
@@ -1961,52 +1916,6 @@ static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
priv->cfg->ops->lib->rx_handler_setup(priv);
}
-/**
- * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
- * @rxb: Rx buffer to reclaim
- *
- * If an Rx buffer has an async callback associated with it the callback
- * will be executed. The attached skb (if present) will only be freed
- * if the callback returns 1
- */
-static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
- struct iwl_rx_mem_buffer *rxb)
-{
- struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
- u16 sequence = le16_to_cpu(pkt->hdr.sequence);
- int txq_id = SEQ_TO_QUEUE(sequence);
- int index = SEQ_TO_INDEX(sequence);
- int huge = sequence & SEQ_HUGE_FRAME;
- int cmd_index;
- struct iwl_cmd *cmd;
-
- /* If a Tx command is being handled and it isn't in the actual
- * command queue then there a command routing bug has been introduced
- * in the queue management code. */
- if (txq_id != IWL_CMD_QUEUE_NUM)
- IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
- txq_id, pkt->hdr.cmd);
- BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
-
- cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
- cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
-
- /* Input error checking is done when commands are added to queue. */
- if (cmd->meta.flags & CMD_WANT_SKB) {
- cmd->meta.source->u.skb = rxb->skb;
- rxb->skb = NULL;
- } else if (cmd->meta.u.callback &&
- !cmd->meta.u.callback(priv, cmd, rxb->skb))
- rxb->skb = NULL;
-
- iwl4965_tx_queue_reclaim(priv, txq_id, index);
-
- if (!(cmd->meta.flags & CMD_ASYNC)) {
- clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
- wake_up_interruptible(&priv->wait_command_queue);
- }
-}
-
/*
* this should be called while priv->lock is locked
*/
@@ -2095,7 +2004,7 @@ void iwl_rx_handle(struct iwl_priv *priv)
* fire off the (possibly) blocking iwl_send_cmd()
* as we reclaim the driver command queue */
if (rxb && rxb->skb)
- iwl4965_tx_cmd_complete(priv, rxb);
+ iwl_tx_cmd_complete(priv, rxb);
else
IWL_WARNING("Claim null rxb?\n");
}
--
1.5.3.6
next prev parent reply other threads:[~2008-05-29 8:37 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-29 8:34 [PATCH 00/43] iwlwifi driver 05/29 updates Zhu Yi
2008-05-29 8:34 ` [PATCH 01/43] iwlwifi: move iwl_dump_nic_error_log to iwlcore module Zhu Yi
2008-05-29 8:34 ` [PATCH 02/43] iwlwifi: add RTC data address for iwl5000 Zhu Yi
2008-05-29 8:34 ` [PATCH 03/43] iwlwifi: use uCode error and event tables pointer w.r.t loaded image Zhu Yi
2008-05-29 8:34 ` [PATCH 04/43] iwlwifi: increase max payload of iwl_cmd Zhu Yi
2008-05-29 8:34 ` [PATCH 05/43] iwlwifi: create drivers debugfs dir under wiphy->debugfsdir Zhu Yi
2008-05-29 8:34 ` [PATCH 06/43] iwlwifi: mark 4965 ucode types Zhu Yi
2008-05-29 8:34 ` [PATCH 07/43] iwlwifi: remove unused variable form __iwl4965_down Zhu Yi
2008-05-29 8:34 ` [PATCH 08/43] iwlwifi: remove notif_missed_beacons variable Zhu Yi
2008-05-29 8:34 ` [PATCH 09/43] iwlwifi: clean up alive_start routine Zhu Yi
2008-05-29 8:34 ` [PATCH 10/43] iwlwifi: remove 4965 from alive_resp structures Zhu Yi
2008-05-29 8:34 ` [PATCH 11/43] iwlwifi: setup correctly L1 L0S pi link values Zhu Yi
2008-05-29 8:34 ` [PATCH 12/43] iwlwifi: implement apm reset flow Zhu Yi
2008-05-29 8:34 ` [PATCH 13/43] iwlwifi: implement apm stop function Zhu Yi
2008-05-29 8:34 ` [PATCH 14/43] iwlwifi: refactor stop master function Zhu Yi
2008-05-29 8:35 ` [PATCH 15/43] iwlwifi: move txq_ctx_stop into iwl-tx.c Zhu Yi
2008-05-29 8:35 ` [PATCH 16/43] iwlwifi: move iwl_rxq_stop into iwl-rx.c Zhu Yi
2008-05-29 8:35 ` [PATCH 17/43] iwlwifi: add remove station functionality Zhu Yi
2008-05-29 8:35 ` [PATCH 18/43] iwlwifi: move add sta handler to iwl-sta.c Zhu Yi
2008-05-29 8:35 ` [PATCH 19/43] iwlwifi: move iwl_rx_missed_beacon_notif to iwl-rx.c Zhu Yi
2008-05-29 8:35 ` [PATCH 20/43] iwlwifi-5000: implement initial calibration for 5000 Zhu Yi
2008-05-29 8:35 ` [PATCH 21/43] iwlwifi: activate status ready timeout only for run time ucode Zhu Yi
2008-05-29 8:35 ` [PATCH 22/43] iwlwifi: add iwl5000_tx_response structure Zhu Yi
2008-05-29 8:35 ` [PATCH 23/43] iwlwifi: move tx response common handlers to iwlcore Zhu Yi
2008-05-29 8:35 ` [PATCH 24/43] iwlwlifi: impelemnt 5000 tx response path Zhu Yi
2008-05-29 8:35 ` [PATCH 25/43] iwlwifi: move 4965 tx response into iwl-4965.c Zhu Yi
2008-05-29 8:35 ` [PATCH 26/43] iwlwifi: fix in-column rate scaling Zhu Yi
2008-05-29 8:35 ` Zhu Yi [this message]
2008-05-29 8:35 ` [PATCH 28/43] iwlwifi: implement txq invalidate byte count table Zhu Yi
2008-05-29 8:35 ` [PATCH 29/43] iwlwifi: iwl-5000 add rxon_assoc Zhu Yi
2008-05-29 8:35 ` [PATCH 30/43] iwlwifi: move iwl_sta_modify_enable_tid_tx to iwl-sta.c Zhu Yi
2008-05-29 8:35 ` [PATCH 31/43] iwlwifi: move aggregation code to iwl-tx.c Zhu Yi
2008-05-29 8:35 ` [PATCH 32/43] iwlwifi: add frame count limit to link quality command Zhu Yi
2008-05-29 8:35 ` [PATCH 33/43] iwlwifi: Rx handlers common use for 4965 and 5000 Zhu Yi
2008-05-29 8:35 ` [PATCH 34/43] iwlwifi: move iwl_get_hw_mode to iwl-core.h Zhu Yi
2008-05-29 8:35 ` [PATCH 35/43] mac80211: fix ieee80211_get_buffered_bc Zhu Yi
2008-05-29 8:35 ` [PATCH 36/43] mac80211: fix deadlock in sta->lock Zhu Yi
2008-05-29 8:35 ` [PATCH 37/43] mac80211: sends HT IE to user level through wext Zhu Yi
2008-05-29 8:35 ` [PATCH 38/43] mac80211: allow disable FAT in specific configurations Zhu Yi
2008-05-29 8:35 ` [PATCH 39/43] iwlwifi: disable FAT channel when not permitted Zhu Yi
2008-05-29 8:35 ` [PATCH 40/43] iwlwifi: fix a memory leak in scan Zhu Yi
2008-05-29 8:35 ` [PATCH 41/43] iwlwifi: remove debugfs entries before cfg80211 Zhu Yi
2008-05-29 8:35 ` [PATCH 42/43] iwlwifi: send calibration results as HUGE commands Zhu Yi
2008-05-29 8:35 ` [PATCH 43/43] iwlwifi: clean iwl4965_mac_config Zhu Yi
2008-05-30 11:47 ` [PATCH 40/43] iwlwifi: fix a memory leak in scan Tomas Winkler
2008-05-29 9:37 ` [PATCH 38/43] mac80211: allow disable FAT in specific configurations Johannes Berg
2008-05-29 9:58 ` Tomas Winkler
2008-05-29 10:12 ` Johannes Berg
2008-05-29 10:39 ` Tomas Winkler
2008-05-29 10:49 ` Johannes Berg
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