iwlagn: reserve queue 10 for TX during scan dwell

New uCode images will use queue 10 for TX
during scan (for P2P offchannel operation
scan). We'll bump the API version of those,
but before we need to reserve queue 10 and
stop using it for aggregation.

To simplify the code, always reserve it,
we could continue using it on older uCode
images but that'd be rather complicated.
Also, we'll set it up to map to the right
FIFO as needed later, but as we don't use
the queue now that doesn't hurt.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-hw.h b/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
index 0e5b842529c40ac7532f54a7f1174bff936d877b..47c43042ba4facf6d8be12df67492ca7db10d64b 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
@@ -92,8 +92,8 @@
 
 #define IWLAGN_CMD_FIFO_NUM            7
 #define IWLAGN_NUM_QUEUES              20
-#define IWLAGN_NUM_AMPDU_QUEUES                10
-#define IWLAGN_FIRST_AMPDU_QUEUE       10
+#define IWLAGN_NUM_AMPDU_QUEUES                9
+#define IWLAGN_FIRST_AMPDU_QUEUE       11
 
 /* Fixed (non-configurable) rx data from phy */
 

diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 6c9790cac8d0b284b5c8870318349fd4b6d5f609..233baf60ed63be999d35a6513954913eac04360e 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -230,12 +230,23 @@ struct iwl_channel_info {
 #define IWL_TX_FIFO_BE_IPAN    4
 #define IWL_TX_FIFO_VI_IPAN    IWL_TX_FIFO_VI
 #define IWL_TX_FIFO_VO_IPAN    5
+/* re-uses the VO FIFO, uCode will properly flush/schedule */
+#define IWL_TX_FIFO_AUX                5
 #define IWL_TX_FIFO_UNUSED     -1
 
-/* Minimum number of queues. MAX_NUM is defined in hw specific files.
- * Set the minimum to accommodate the 4 standard TX queues, 1 command
- * queue, 2 (unused) HCCA queues, and 4 HT queues (one for each AC) */
-#define IWL_MIN_NUM_QUEUES     10
+/* AUX (TX during scan dwell) queue */
+#define IWL_AUX_QUEUE          10
+
+/*
+ * Minimum number of queues. MAX_NUM is defined in hw specific files.
+ * Set the minimum to accommodate
+ *  - 4 standard TX queues
+ *  - the command queue
+ *  - 4 PAN TX queues
+ *  - the PAN multicast queue, and
+ *  - the AUX (TX during scan dwell) queue.
+ */
+#define IWL_MIN_NUM_QUEUES     11
 
 /*
  * Command queue depends on iPAN support.

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index 41f0de9140087e4105354a9dcb2a03cacde4fccb..3001bfb46e25211843cc451b7a9856567db5c4e0 100644 (file)
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -750,6 +750,7 @@ static const struct queue_to_fifo_ac iwlagn_default_queue_to_tx_fifo[] = {
        { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, },
        { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, },
        { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, },
+       { IWL_TX_FIFO_UNUSED, IWL_AC_UNSET, },
 };
 
 static const struct queue_to_fifo_ac iwlagn_ipan_queue_to_tx_fifo[] = {
@@ -763,6 +764,7 @@ static const struct queue_to_fifo_ac iwlagn_ipan_queue_to_tx_fifo[] = {
        { IWL_TX_FIFO_VO_IPAN, IEEE80211_AC_VO, },
        { IWL_TX_FIFO_BE_IPAN, 2, },
        { IWLAGN_CMD_FIFO_NUM, IWL_AC_UNSET, },
+       { IWL_TX_FIFO_AUX, IWL_AC_UNSET, },
 };
 static void iwl_trans_tx_start(struct iwl_priv *priv)
 {
@@ -848,10 +850,12 @@ static void iwl_trans_tx_start(struct iwl_priv *priv)
        /* reset to 0 to enable all the queue first */
        priv->txq_ctx_active_msk = 0;
 
-       BUILD_BUG_ON(ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo) != 10);
-       BUILD_BUG_ON(ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo) != 10);
+       BUILD_BUG_ON(ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo) !=
+                                               IWLAGN_FIRST_AMPDU_QUEUE);
+       BUILD_BUG_ON(ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo) !=
+                                               IWLAGN_FIRST_AMPDU_QUEUE);
 
-       for (i = 0; i < 10; i++) {
+       for (i = 0; i < IWLAGN_FIRST_AMPDU_QUEUE; i++) {
                int fifo = queue_to_fifo[i].fifo;
                int ac = queue_to_fifo[i].ac;