From: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
This one is really transport related.
==== moves Stanislaw's code to BSD area ====
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@xxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-agn.c | 4 ++--
drivers/net/wireless/iwlwifi/iwl-core.c | 26 +++-----------------------
drivers/net/wireless/iwlwifi/iwl-shared.h | 3 +++
drivers/net/wireless/iwlwifi/iwl-trans.c | 28 ++++++++++++++++++++++++++++
drivers/net/wireless/iwlwifi/iwl-trans.h | 6 ++++++
5 files changed, 42 insertions(+), 25 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 5d0888a..5fdf9b1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3191,8 +3191,8 @@ static int iwl_set_hw_params(struct iwl_priv *priv)
priv->cfg->base_params->num_of_ampdu_queues;
hw_params(priv).shadow_reg_enable =
priv->cfg->base_params->shadow_reg_enable;
- hw_params(priv).sku =
- priv->cfg->sku;
+ hw_params(priv).sku = priv->cfg->sku;
+ hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
/* Device-specific setup */
return priv->cfg->lib->set_hw_params(priv);
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index d7fde63..7aef3b6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -1724,32 +1724,12 @@ int iwl_mac_change_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
return err;
}
-/*
- * On every watchdog tick we check (latest) time stamp. If it does not
- * change during timeout period and queue is not empty we reset firmware.
- */
-static int iwl_check_stuck_queue(struct iwl_priv *priv, int cnt)
+static inline int iwl_check_stuck_queue(struct iwl_priv *priv, int txq)
{
- struct iwl_tx_queue *txq = &priv->txq[cnt];
- struct iwl_queue *q = &txq->q;
- unsigned long timeout;
- int ret;
-
- if (q->read_ptr == q->write_ptr) {
- txq->time_stamp = jiffies;
- return 0;
- }
-
- timeout = txq->time_stamp +
- msecs_to_jiffies(priv->cfg->base_params->wd_timeout);
-
- if (time_after(jiffies, timeout)) {
- IWL_ERR(priv, "Queue %d stuck for %u ms.\n",
- q->id, priv->cfg->base_params->wd_timeout);
- ret = iwl_force_reset(priv, IWL_FW_RESET, false);
+ if (iwl_trans_check_stuck_queue(trans(priv), txq)) {
+ int ret = iwl_force_reset(priv, IWL_FW_RESET, false);
return (ret == -EAGAIN) ? 0 : 1;
}
-
return 0;
}
diff --git a/drivers/net/wireless/iwlwifi/iwl-shared.h b/drivers/net/wireless/iwlwifi/iwl-shared.h
index 0bd6f7d..17a02a7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-shared.h
+++ b/drivers/net/wireless/iwlwifi/iwl-shared.h
@@ -147,6 +147,7 @@ struct iwl_mod_params {
* @sw_crypto: 0 for hw, 1 for sw
* @max_xxx_size: for ucode uses
* @ct_kill_threshold: temperature threshold
+ * @wd_timeout: TX queues watchdog timeout
* @calib_init_cfg: setup initial calibrations for the hw
* @calib_rt_cfg: setup runtime calibrations for the hw
* @struct iwl_sensitivity_ranges: range of sensitivity values
@@ -169,6 +170,8 @@ struct iwl_hw_params {
u32 ct_kill_threshold; /* value in hw-dependent units */
u32 ct_kill_exit_threshold; /* value in hw-dependent units */
/* for 1000, 6000 series and up */
+ unsigned int wd_timeout;
+
u32 calib_init_cfg;
u32 calib_rt_cfg;
const struct iwl_sensitivity_ranges *sens;
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index 7b868c7..6461704 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -1475,6 +1475,33 @@ static int iwl_trans_pcie_wait_tx_queue_empty(struct iwl_trans *trans)
return ret;
}
+/*
+ * On every watchdog tick we check (latest) time stamp. If it does not
+ * change during timeout period and queue is not empty we reset firmware.
+ */
+static int iwl_trans_pcie_check_stuck_queue(struct iwl_trans *trans, int cnt)
+{
+ struct iwl_tx_queue *txq = &priv(trans)->txq[cnt];
+ struct iwl_queue *q = &txq->q;
+ unsigned long timeout;
+
+ if (q->read_ptr == q->write_ptr) {
+ txq->time_stamp = jiffies;
+ return 0;
+ }
+
+ timeout = txq->time_stamp +
+ msecs_to_jiffies(hw_params(trans).wd_timeout);
+
+ if (time_after(jiffies, timeout)) {
+ IWL_ERR(trans, "Queue %d stuck for %u ms.\n", q->id,
+ hw_params(trans).wd_timeout);
+ return 1;
+ }
+
+ return 0;
+}
+
#ifdef CONFIG_IWLWIFI_DEBUGFS
/* create and remove of files */
#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
@@ -2055,6 +2082,7 @@ const struct iwl_trans_ops trans_ops_pcie = {
.dbgfs_register = iwl_trans_pcie_dbgfs_register,
.wait_tx_queue_empty = iwl_trans_pcie_wait_tx_queue_empty,
+ .check_stuck_queue = iwl_trans_pcie_check_stuck_queue,
.suspend = iwl_trans_pcie_suspend,
.resume = iwl_trans_pcie_resume,
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index 45d6dff..6edf2e0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -101,6 +101,7 @@ struct iwl_device_cmd;
* @kick_nic: remove the RESET from the embedded CPU and let it run
* @free: release all the ressource for the transport layer itself such as
* irq, tasklet etc...
+ * @check_stuck_queue: check if a specific queue is stuck
* @wait_tx_queue_empty: wait until all tx queues are empty
* @dbgfs_register: add the dbgfs files under this directory. Files will be
* automatically deleted.
@@ -143,6 +144,7 @@ struct iwl_trans_ops {
void (*free)(struct iwl_trans *trans);
int (*dbgfs_register)(struct iwl_trans *trans, struct dentry* dir);
+ int (*check_stuck_queue)(struct iwl_trans *trans, int q);
int (*wait_tx_queue_empty)(struct iwl_trans *trans);
int (*suspend)(struct iwl_trans *trans);
@@ -259,6 +261,10 @@ static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans)
return trans->ops->wait_tx_queue_empty(trans);
}
+static inline int iwl_trans_check_stuck_queue(struct iwl_trans *trans, int q)
+{
+ return trans->ops->check_stuck_queue(trans, q);
+}
static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,
struct dentry *dir)
{
--
1.7.0.4
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
