Merge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

6 files changed, 108 insertions, 84 deletions

diff --git a/drivers/net/wireless/iwlwifi/dvm/commands.h b/drivers/net/wireless/iwlwifi/dvm/commands.h
index 64811cd91635..97bea16f3592 100644
--- a/drivers/net/wireless/iwlwifi/dvm/commands.h
+++ b/drivers/net/wireless/iwlwifi/dvm/commands.h
@@ -190,6 +190,44 @@ enum {
 	REPLY_MAX = 0xff
 };
 
+/*
+ * 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.
+ */
+#define IWL_DEFAULT_CMD_QUEUE_NUM	4
+#define IWL_IPAN_CMD_QUEUE_NUM		9
+
+#define IWL_TX_FIFO_BK		0	/* shared */
+#define IWL_TX_FIFO_BE		1
+#define IWL_TX_FIFO_VI		2	/* shared */
+#define IWL_TX_FIFO_VO		3
+#define IWL_TX_FIFO_BK_IPAN	IWL_TX_FIFO_BK
+#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	255
+
+#define IWLAGN_CMD_FIFO_NUM	7
+
+/*
+ * This queue number is required for proper operation
+ * because the ucode will stop/start the scheduler as
+ * required.
+ */
+#define IWL_IPAN_MCAST_QUEUE	8
+
 /******************************************************************************
  * (0)
  * Commonly used structures and definitions:
@@ -755,8 +793,6 @@ struct iwl_qosparam_cmd {
 #define IWLAGN_BROADCAST_ID	15
 #define	IWLAGN_STATION_COUNT	16
 
-#define	IWL_INVALID_STATION 	255
-#define IWL_MAX_TID_COUNT	8
 #define IWL_TID_NON_QOS IWL_MAX_TID_COUNT
 
 #define STA_FLG_TX_RATE_MSK		cpu_to_le32(1 << 2)
diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
index b0eff1c340c7..46782f1102ac 100644
--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
@@ -83,7 +83,7 @@ static ssize_t iwl_dbgfs_##name##_write(struct file *file,              \
 #define DEBUGFS_READ_FILE_OPS(name)                                     \
 	DEBUGFS_READ_FUNC(name);                                        \
 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
-	.read = iwl_dbgfs_##name##_read,                       		\
+	.read = iwl_dbgfs_##name##_read,				\
 	.open = simple_open,						\
 	.llseek = generic_file_llseek,					\
 };
@@ -2255,6 +2255,10 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
 	char buf[8];
 	int buf_size;
 
+	/* check that the interface is up */
+	if (!iwl_is_ready(priv))
+		return -EAGAIN;
+
 	memset(buf, 0, sizeof(buf));
 	buf_size = min(count, sizeof(buf) -  1);
 	if (copy_from_user(buf, user_buf, buf_size))
diff --git a/drivers/net/wireless/iwlwifi/dvm/dev.h b/drivers/net/wireless/iwlwifi/dvm/dev.h
index 54cf085ddc89..054f728f6266 100644
--- a/drivers/net/wireless/iwlwifi/dvm/dev.h
+++ b/drivers/net/wireless/iwlwifi/dvm/dev.h
@@ -90,22 +90,6 @@
 
 #define IWL_NUM_SCAN_RATES         (2)
 
-/*
- * 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.
- */
-#define IWL_DEFAULT_CMD_QUEUE_NUM	4
-#define IWL_IPAN_CMD_QUEUE_NUM		9
 
 #define IEEE80211_DATA_LEN              2304
 #define IEEE80211_4ADDR_LEN             30
diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c
index abfd7916bde6..612f05d757db 100644
--- a/drivers/net/wireless/iwlwifi/dvm/main.c
+++ b/drivers/net/wireless/iwlwifi/dvm/main.c
@@ -518,49 +518,6 @@ static void iwl_bg_tx_flush(struct work_struct *work)
  * queue/FIFO/AC mapping definitions
  */
 
-#define IWL_TX_FIFO_BK		0	/* shared */
-#define IWL_TX_FIFO_BE		1
-#define IWL_TX_FIFO_VI		2	/* shared */
-#define IWL_TX_FIFO_VO		3
-#define IWL_TX_FIFO_BK_IPAN	IWL_TX_FIFO_BK
-#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
-
-#define IWLAGN_CMD_FIFO_NUM	7
-
-/*
- * This queue number is required for proper operation
- * because the ucode will stop/start the scheduler as
- * required.
- */
-#define IWL_IPAN_MCAST_QUEUE	8
-
-static const u8 iwlagn_default_queue_to_tx_fifo[] = {
-	IWL_TX_FIFO_VO,
-	IWL_TX_FIFO_VI,
-	IWL_TX_FIFO_BE,
-	IWL_TX_FIFO_BK,
-	IWLAGN_CMD_FIFO_NUM,
-};
-
-static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
-	IWL_TX_FIFO_VO,
-	IWL_TX_FIFO_VI,
-	IWL_TX_FIFO_BE,
-	IWL_TX_FIFO_BK,
-	IWL_TX_FIFO_BK_IPAN,
-	IWL_TX_FIFO_BE_IPAN,
-	IWL_TX_FIFO_VI_IPAN,
-	IWL_TX_FIFO_VO_IPAN,
-	IWL_TX_FIFO_BE_IPAN,
-	IWLAGN_CMD_FIFO_NUM,
-	IWL_TX_FIFO_AUX,
-};
-
 static const u8 iwlagn_bss_ac_to_fifo[] = {
 	IWL_TX_FIFO_VO,
 	IWL_TX_FIFO_VI,
@@ -1350,6 +1307,7 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 	else
 		trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
 	trans_cfg.command_names = iwl_dvm_cmd_strings;
+	trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
 
 	WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
 		priv->cfg->base_params->num_of_queues);
@@ -1363,15 +1321,9 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 	if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
 		priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
 		trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
-		trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
-		trans_cfg.n_queue_to_fifo =
-			ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
 	} else {
 		priv->sta_key_max_num = STA_KEY_MAX_NUM;
 		trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
-		trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
-		trans_cfg.n_queue_to_fifo =
-			ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
 	}
 
 	/* Configure transport layer */
@@ -1460,9 +1412,6 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 		ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
 		priv->sta_key_max_num = STA_KEY_MAX_NUM;
 		trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
-		trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
-		trans_cfg.n_queue_to_fifo =
-			ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
 
 		/* Configure transport layer again*/
 		iwl_trans_configure(priv->trans, &trans_cfg);
@@ -1480,9 +1429,6 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 		atomic_set(&priv->queue_stop_count[i], 0);
 	}
 
-	WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
-						IWLAGN_CMD_FIFO_NUM);
-
 	if (iwl_init_drv(priv))
 		goto out_free_eeprom;
 
diff --git a/drivers/net/wireless/iwlwifi/dvm/scan.c b/drivers/net/wireless/iwlwifi/dvm/scan.c
index 6633074258c7..e3467fa86899 100644
--- a/drivers/net/wireless/iwlwifi/dvm/scan.c
+++ b/drivers/net/wireless/iwlwifi/dvm/scan.c
@@ -396,15 +396,21 @@ static u16 iwl_get_active_dwell_time(struct iwl_priv *priv,
 static u16 iwl_limit_dwell(struct iwl_priv *priv, u16 dwell_time)
 {
 	struct iwl_rxon_context *ctx;
+	int limits[NUM_IWL_RXON_CTX] = {};
+	int n_active = 0;
+	u16 limit;
+
+	BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 
 	/*
 	 * If we're associated, we clamp the dwell time 98%
-	 * of the smallest beacon interval (minus 2 * channel
-	 * tune time)
+	 * of the beacon interval (minus 2 * channel tune time)
+	 * If both contexts are active, we have to restrict to
+	 * 1/2 of the minimum of them, because they might be in
+	 * lock-step with the time inbetween only half of what
+	 * time we'd have in each of them.
 	 */
 	for_each_context(priv, ctx) {
-		u16 value;
-
 		switch (ctx->staging.dev_type) {
 		case RXON_DEV_TYPE_P2P:
 			/* no timing constraints */
@@ -424,14 +430,25 @@ static u16 iwl_limit_dwell(struct iwl_priv *priv, u16 dwell_time)
 			break;
 		}
 
-		value = ctx->beacon_int;
-		if (!value)
-			value = IWL_PASSIVE_DWELL_BASE;
-		value = (value * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
-		dwell_time = min(value, dwell_time);
+		limits[n_active++] = ctx->beacon_int ?: IWL_PASSIVE_DWELL_BASE;
 	}
 
-	return dwell_time;
+	switch (n_active) {
+	case 0:
+		return dwell_time;
+	case 2:
+		limit = (limits[1] * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
+		limit /= 2;
+		dwell_time = min(limit, dwell_time);
+		/* fall through to limit further */
+	case 1:
+		limit = (limits[0] * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
+		limit /= n_active;
+		return min(limit, dwell_time);
+	default:
+		WARN_ON_ONCE(1);
+		return dwell_time;
+	}
 }
 
 static u16 iwl_get_passive_dwell_time(struct iwl_priv *priv,
diff --git a/drivers/net/wireless/iwlwifi/dvm/ucode.c b/drivers/net/wireless/iwlwifi/dvm/ucode.c
index b3a314ba48c7..6d8d6dd7943f 100644
--- a/drivers/net/wireless/iwlwifi/dvm/ucode.c
+++ b/drivers/net/wireless/iwlwifi/dvm/ucode.c
@@ -226,13 +226,50 @@ int iwl_send_bt_env(struct iwl_priv *priv, u8 action, u8 type)
 	return ret;
 }
 
+static const u8 iwlagn_default_queue_to_tx_fifo[] = {
+	IWL_TX_FIFO_VO,
+	IWL_TX_FIFO_VI,
+	IWL_TX_FIFO_BE,
+	IWL_TX_FIFO_BK,
+};
+
+static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
+	IWL_TX_FIFO_VO,
+	IWL_TX_FIFO_VI,
+	IWL_TX_FIFO_BE,
+	IWL_TX_FIFO_BK,
+	IWL_TX_FIFO_BK_IPAN,
+	IWL_TX_FIFO_BE_IPAN,
+	IWL_TX_FIFO_VI_IPAN,
+	IWL_TX_FIFO_VO_IPAN,
+	IWL_TX_FIFO_BE_IPAN,
+	IWL_TX_FIFO_UNUSED,
+	IWL_TX_FIFO_AUX,
+};
 
 static int iwl_alive_notify(struct iwl_priv *priv)
 {
+	const u8 *queue_to_txf;
+	u8 n_queues;
 	int ret;
+	int i;
 
 	iwl_trans_fw_alive(priv->trans);
 
+	if (priv->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN &&
+	    priv->eeprom_data->sku & EEPROM_SKU_CAP_IPAN_ENABLE) {
+		n_queues = ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
+		queue_to_txf = iwlagn_ipan_queue_to_tx_fifo;
+	} else {
+		n_queues = ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
+		queue_to_txf = iwlagn_default_queue_to_tx_fifo;
+	}
+
+	for (i = 0; i < n_queues; i++)
+		if (queue_to_txf[i] != IWL_TX_FIFO_UNUSED)
+			iwl_trans_ac_txq_enable(priv->trans, i,
+						queue_to_txf[i]);
+
 	priv->passive_no_rx = false;
 	priv->transport_queue_stop = 0;