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path: root/drivers/net/wireless/iwlwifi/iwl-rx.c
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-rx.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-rx.c70
1 files changed, 24 insertions, 46 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 8f65908f66f1..2b8d40b37a1c 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -145,18 +145,14 @@ int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
goto exit_unlock;
}
- ret = iwl_grab_nic_access(priv);
- if (ret)
- goto exit_unlock;
-
- /* Device expects a multiple of 8 */
- iwl_write_direct32(priv, rx_wrt_ptr_reg, q->write & ~0x7);
- iwl_release_nic_access(priv);
+ q->write_actual = (q->write & ~0x7);
+ iwl_write_direct32(priv, rx_wrt_ptr_reg, q->write_actual);
/* Else device is assumed to be awake */
} else {
/* Device expects a multiple of 8 */
- iwl_write32(priv, rx_wrt_ptr_reg, q->write & ~0x7);
+ q->write_actual = (q->write & ~0x7);
+ iwl_write_direct32(priv, rx_wrt_ptr_reg, q->write_actual);
}
q->need_update = 0;
@@ -218,7 +214,7 @@ int iwl_rx_queue_restock(struct iwl_priv *priv)
/* If we've added more space for the firmware to place data, tell it.
* Increment device's write pointer in multiples of 8. */
- if (write != (rxq->write & ~0x7)) {
+ if (rxq->write_actual != (rxq->write & ~0x7)) {
spin_lock_irqsave(&rxq->lock, flags);
rxq->need_update = 1;
spin_unlock_irqrestore(&rxq->lock, flags);
@@ -238,7 +234,7 @@ EXPORT_SYMBOL(iwl_rx_queue_restock);
* Also restock the Rx queue via iwl_rx_queue_restock.
* This is called as a scheduled work item (except for during initialization)
*/
-void iwl_rx_allocate(struct iwl_priv *priv)
+void iwl_rx_allocate(struct iwl_priv *priv, gfp_t priority)
{
struct iwl_rx_queue *rxq = &priv->rxq;
struct list_head *element;
@@ -260,7 +256,8 @@ void iwl_rx_allocate(struct iwl_priv *priv)
/* Alloc a new receive buffer */
rxb->skb = alloc_skb(priv->hw_params.rx_buf_size + 256,
- GFP_KERNEL);
+ priority);
+
if (!rxb->skb) {
IWL_CRIT(priv, "Can not allocate SKB buffers\n");
/* We don't reschedule replenish work here -- we will
@@ -295,7 +292,7 @@ void iwl_rx_replenish(struct iwl_priv *priv)
{
unsigned long flags;
- iwl_rx_allocate(priv);
+ iwl_rx_allocate(priv, GFP_KERNEL);
spin_lock_irqsave(&priv->lock, flags);
iwl_rx_queue_restock(priv);
@@ -303,6 +300,14 @@ void iwl_rx_replenish(struct iwl_priv *priv)
}
EXPORT_SYMBOL(iwl_rx_replenish);
+void iwl_rx_replenish_now(struct iwl_priv *priv)
+{
+ iwl_rx_allocate(priv, GFP_ATOMIC);
+
+ iwl_rx_queue_restock(priv);
+}
+EXPORT_SYMBOL(iwl_rx_replenish_now);
+
/* Assumes that the skb field of the buffers in 'pool' is kept accurate.
* If an SKB has been detached, the POOL needs to have its SKB set to NULL
@@ -358,6 +363,7 @@ int iwl_rx_queue_alloc(struct iwl_priv *priv)
/* Set us so that we have processed and used all buffers, but have
* not restocked the Rx queue with fresh buffers */
rxq->read = rxq->write = 0;
+ rxq->write_actual = 0;
rxq->free_count = 0;
rxq->need_update = 0;
return 0;
@@ -396,6 +402,7 @@ void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
/* Set us so that we have processed and used all buffers, but have
* not restocked the Rx queue with fresh buffers */
rxq->read = rxq->write = 0;
+ rxq->write_actual = 0;
rxq->free_count = 0;
spin_unlock_irqrestore(&rxq->lock, flags);
}
@@ -403,18 +410,12 @@ EXPORT_SYMBOL(iwl_rx_queue_reset);
int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
{
- int ret;
- unsigned long flags;
u32 rb_size;
const u32 rfdnlog = RX_QUEUE_SIZE_LOG; /* 256 RBDs */
- const u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT why this stalls RX */
+ u32 rb_timeout = 0; /* FIXME: RX_RB_TIMEOUT for all devices? */
- spin_lock_irqsave(&priv->lock, flags);
- ret = iwl_grab_nic_access(priv);
- if (ret) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return ret;
- }
+ if (!priv->cfg->use_isr_legacy)
+ rb_timeout = RX_RB_TIMEOUT;
if (priv->cfg->mod_params->amsdu_size_8K)
rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
@@ -452,35 +453,19 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
(rb_timeout << FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS)|
(rfdnlog << FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS));
- iwl_release_nic_access(priv);
-
iwl_write32(priv, CSR_INT_COALESCING, 0x40);
- spin_unlock_irqrestore(&priv->lock, flags);
-
return 0;
}
int iwl_rxq_stop(struct iwl_priv *priv)
{
- int ret;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->lock, flags);
- ret = iwl_grab_nic_access(priv);
- if (unlikely(ret)) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return ret;
- }
/* stop Rx DMA */
iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
iwl_poll_direct_bit(priv, FH_MEM_RSSR_RX_STATUS_REG,
FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE, 1000);
- iwl_release_nic_access(priv);
- spin_unlock_irqrestore(&priv->lock, flags);
-
return 0;
}
EXPORT_SYMBOL(iwl_rxq_stop);
@@ -582,8 +567,8 @@ void iwl_rx_statistics(struct iwl_priv *priv,
iwl_leds_background(priv);
- if (priv->cfg->ops->lib->temperature && change)
- priv->cfg->ops->lib->temperature(priv);
+ if (priv->cfg->ops->lib->temp_ops.temperature && change)
+ priv->cfg->ops->lib->temp_ops.temperature(priv);
}
EXPORT_SYMBOL(iwl_rx_statistics);
@@ -1102,13 +1087,6 @@ void iwl_rx_reply_rx(struct iwl_priv *priv,
if (rx_start->phy_flags & RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK)
rx_status.flag |= RX_FLAG_SHORTPRE;
- /* Take shortcut when only in monitor mode */
- if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
- iwl_pass_packet_to_mac80211(priv, include_phy,
- rxb, &rx_status);
- return;
- }
-
network_packet = iwl_is_network_packet(priv, header);
if (network_packet) {
priv->last_rx_rssi = rx_status.signal;