Merge tag 'iwlwifi-next-for-kalle-2015-02-03' of https://git.kernel.o…

…rg/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next

* Add support for beamforming
* Enable stuck queue detection for iwlmvm
* A few fixes for EBS scan
* Fixes for various failure paths
* Improvements for TDLS Offchannel

drivers/net/wireless/iwlwifi/dvm/main.c

@@ -1228,11 +1228,8 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
 	trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
 	trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
 	trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
-	if (!iwlwifi_mod_params.wd_disable)
-		trans_cfg.queue_watchdog_timeout =
-			priv->cfg->base_params->wd_timeout;
-	else
-		trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
+	trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
+
 	trans_cfg.command_names = iwl_dvm_cmd_strings;
 	trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
 

drivers/net/wireless/iwlwifi/dvm/tx.c

@@ -715,7 +715,7 @@ int iwlagn_tx_agg_oper(struct iwl_priv *priv, struct ieee80211_vif *vif,
 	fifo = ctx->ac_to_fifo[tid_to_ac[tid]];
 
 	iwl_trans_txq_enable(priv->trans, q, fifo, sta_priv->sta_id, tid,
-			     buf_size, ssn);
+			     buf_size, ssn, 0);
 
 	/*
 	 * If the limit is 0, then it wasn't initialised yet,

drivers/net/wireless/iwlwifi/dvm/ucode.c

@@ -267,7 +267,7 @@ static int iwl_alive_notify(struct iwl_priv *priv)
 	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]);
+						queue_to_txf[i], 0);
 
 	priv->passive_no_rx = false;
 	priv->transport_queue_stop = 0;

drivers/net/wireless/iwlwifi/iwl-config.h

@@ -126,7 +126,7 @@ enum iwl_led_mode {
 
 /* TX queue watchdog timeouts in mSecs */
 #define IWL_WATCHDOG_DISABLED	0
-#define IWL_DEF_WD_TIMEOUT	2000
+#define IWL_DEF_WD_TIMEOUT	2500
 #define IWL_LONG_WD_TIMEOUT	10000
 #define IWL_MAX_WD_TIMEOUT	120000
 

drivers/net/wireless/iwlwifi/iwl-drv.c

@@ -1367,7 +1367,6 @@ struct iwl_mod_params iwlwifi_mod_params = {
 	.restart_fw = true,
 	.bt_coex_active = true,
 	.power_level = IWL_POWER_INDEX_1,
-	.wd_disable = true,
 	.d0i3_disable = true,
 #ifndef CONFIG_IWLWIFI_UAPSD
 	.uapsd_disable = true,
@@ -1478,10 +1477,6 @@ module_param_named(antenna_coupling, iwlwifi_mod_params.ant_coupling,
 MODULE_PARM_DESC(antenna_coupling,
 		 "specify antenna coupling in dB (default: 0 dB)");
 
-module_param_named(wd_disable, iwlwifi_mod_params.wd_disable, int, S_IRUGO);
-MODULE_PARM_DESC(wd_disable,
-		"Disable stuck queue watchdog timer 0=system default, 1=disable (default: 1)");
-
 module_param_named(nvm_file, iwlwifi_mod_params.nvm_file, charp, S_IRUGO);
 MODULE_PARM_DESC(nvm_file, "NVM file name");
 

drivers/net/wireless/iwlwifi/iwl-fw-file.h

@@ -270,6 +270,7 @@ enum iwl_ucode_tlv_api {
  * @IWL_UCODE_TLV_CAPA_D0I3_SUPPORT: supports D0i3
  * @IWL_UCODE_TLV_CAPA_LAR_SUPPORT: supports Location Aware Regulatory
  * @IWL_UCODE_TLV_CAPA_UMAC_SCAN: supports UMAC scan.
+ * @IWL_UCODE_TLV_CAPA_BEAMFORMER: supports Beamformer
  * @IWL_UCODE_TLV_CAPA_TDLS_SUPPORT: support basic TDLS functionality
  * @IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT: supports insertion of current
  *	tx power value into TPC Report action frame and Link Measurement Report
@@ -288,6 +289,7 @@ enum iwl_ucode_tlv_capa {
 	IWL_UCODE_TLV_CAPA_D0I3_SUPPORT			= BIT(0),
 	IWL_UCODE_TLV_CAPA_LAR_SUPPORT			= BIT(1),
 	IWL_UCODE_TLV_CAPA_UMAC_SCAN			= BIT(2),
+	IWL_UCODE_TLV_CAPA_BEAMFORMER			= BIT(3),
 	IWL_UCODE_TLV_CAPA_TDLS_SUPPORT			= BIT(6),
 	IWL_UCODE_TLV_CAPA_TXPOWER_INSERTION_SUPPORT	= BIT(8),
 	IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT	= BIT(9),

drivers/net/wireless/iwlwifi/iwl-modparams.h

@@ -96,7 +96,6 @@ enum iwl_disable_11n {
  *	use IWL_[DIS,EN]ABLE_HT_* constants
  * @amsdu_size_8K: enable 8K amsdu size, default = 0
  * @restart_fw: restart firmware, default = 1
- * @wd_disable: disable stuck queue check, default = 1
  * @bt_coex_active: enable bt coex, default = true
  * @led_mode: system default, default = 0
  * @power_save: enable power save, default = false
@@ -111,7 +110,6 @@ struct iwl_mod_params {
 	unsigned int disable_11n;
 	int amsdu_size_8K;
 	bool restart_fw;
-	int  wd_disable;
 	bool bt_coex_active;
 	int led_mode;
 	bool power_save;

drivers/net/wireless/iwlwifi/iwl-prph.h

@@ -252,6 +252,7 @@
 #define SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK		(0x0000007F)
 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS	(16)
 #define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK	(0x007F0000)
+#define SCD_GP_CTRL_ENABLE_31_QUEUES		BIT(0)
 
 /* Context Data */
 #define SCD_CONTEXT_MEM_LOWER_BOUND	(SCD_MEM_LOWER_BOUND + 0x600)
@@ -285,32 +286,9 @@
 #define SCD_CHAINEXT_EN		(SCD_BASE + 0x244)
 #define SCD_AGGR_SEL		(SCD_BASE + 0x248)
 #define SCD_INTERRUPT_MASK	(SCD_BASE + 0x108)
+#define SCD_GP_CTRL		(SCD_BASE + 0x1a8)
 #define SCD_EN_CTRL		(SCD_BASE + 0x254)
 
-static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
-{
-	if (chnl < 20)
-		return SCD_BASE + 0x18 + chnl * 4;
-	WARN_ON_ONCE(chnl >= 32);
-	return SCD_BASE + 0x284 + (chnl - 20) * 4;
-}
-
-static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
-{
-	if (chnl < 20)
-		return SCD_BASE + 0x68 + chnl * 4;
-	WARN_ON_ONCE(chnl >= 32);
-	return SCD_BASE + 0x2B4 + (chnl - 20) * 4;
-}
-
-static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
-{
-	if (chnl < 20)
-		return SCD_BASE + 0x10c + chnl * 4;
-	WARN_ON_ONCE(chnl >= 32);
-	return SCD_BASE + 0x384 + (chnl - 20) * 4;
-}
-
 /*********************** END TX SCHEDULER *************************************/
 
 /* Oscillator clock */

drivers/net/wireless/iwlwifi/iwl-scd.h

@@ -69,14 +69,6 @@
 #include "iwl-prph.h"
 
 
-static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
-					    u16 txq_id)
-{
-	iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
-		       (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
-		       (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
-}
-
 static inline void iwl_scd_txq_set_chain(struct iwl_trans *trans,
 					 u16 txq_id)
 {
@@ -115,4 +107,37 @@ static inline void iwl_scd_enable_set_active(struct iwl_trans *trans,
 {
 	iwl_write_prph(trans, SCD_EN_CTRL, value);
 }
+
+static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl)
+{
+	if (chnl < 20)
+		return SCD_BASE + 0x18 + chnl * 4;
+	WARN_ON_ONCE(chnl >= 32);
+	return SCD_BASE + 0x284 + (chnl - 20) * 4;
+}
+
+static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl)
+{
+	if (chnl < 20)
+		return SCD_BASE + 0x68 + chnl * 4;
+	WARN_ON_ONCE(chnl >= 32);
+	return SCD_BASE + 0x2B4 + chnl * 4;
+}
+
+static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl)
+{
+	if (chnl < 20)
+		return SCD_BASE + 0x10c + chnl * 4;
+	WARN_ON_ONCE(chnl >= 32);
+	return SCD_BASE + 0x334 + chnl * 4;
+}
+
+static inline void iwl_scd_txq_set_inactive(struct iwl_trans *trans,
+					    u16 txq_id)
+{
+	iwl_write_prph(trans, SCD_QUEUE_STATUS_BITS(txq_id),
+		       (0 << SCD_QUEUE_STTS_REG_POS_ACTIVE)|
+		       (1 << SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN));
+}
+
 #endif

drivers/net/wireless/iwlwifi/iwl-trans.h

@@ -368,6 +368,7 @@ enum iwl_trans_status {
  * @cmd_queue: the index of the command queue.
  *	Must be set before start_fw.
  * @cmd_fifo: the fifo for host commands
+ * @cmd_q_wdg_timeout: the timeout of the watchdog timer for the command queue.
  * @no_reclaim_cmds: Some devices erroneously don't set the
  *	SEQ_RX_FRAME bit on some notifications, this is the
  *	list of such notifications to filter. Max length is
@@ -378,8 +379,6 @@ enum iwl_trans_status {
  * @bc_table_dword: set to true if the BC table expects the byte count to be
  *	in DWORD (as opposed to bytes)
  * @scd_set_active: should the transport configure the SCD for HCMD queue
- * @queue_watchdog_timeout: time (in ms) after which queues
- *	are considered stuck and will trigger device restart
  * @command_names: array of command names, must be 256 entries
  *	(one for each command); for debugging only
  * @sdio_adma_addr: the default address to set for the ADMA in SDIO mode until
@@ -390,13 +389,13 @@ struct iwl_trans_config {
 
 	u8 cmd_queue;
 	u8 cmd_fifo;
+	unsigned int cmd_q_wdg_timeout;
 	const u8 *no_reclaim_cmds;
 	unsigned int n_no_reclaim_cmds;
 
 	bool rx_buf_size_8k;
 	bool bc_table_dword;
 	bool scd_set_active;
-	unsigned int queue_watchdog_timeout;
 	const char *const *command_names;
 
 	u32 sdio_adma_addr;
@@ -511,7 +510,8 @@ struct iwl_trans_ops {
 			struct sk_buff_head *skbs);
 
 	void (*txq_enable)(struct iwl_trans *trans, int queue, u16 ssn,
-			   const struct iwl_trans_txq_scd_cfg *cfg);
+			   const struct iwl_trans_txq_scd_cfg *cfg,
+			   unsigned int queue_wdg_timeout);
 	void (*txq_disable)(struct iwl_trans *trans, int queue,
 			    bool configure_scd);
 
@@ -829,19 +829,21 @@ static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue,
 
 static inline void
 iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn,
-			 const struct iwl_trans_txq_scd_cfg *cfg)
+			 const struct iwl_trans_txq_scd_cfg *cfg,
+			 unsigned int queue_wdg_timeout)
 {
 	might_sleep();
 
 	if (unlikely((trans->state != IWL_TRANS_FW_ALIVE)))
 		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
 
-	trans->ops->txq_enable(trans, queue, ssn, cfg);
+	trans->ops->txq_enable(trans, queue, ssn, cfg, queue_wdg_timeout);
 }
 
 static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
 					int fifo, int sta_id, int tid,
-					int frame_limit, u16 ssn)
+					int frame_limit, u16 ssn,
+					unsigned int queue_wdg_timeout)
 {
 	struct iwl_trans_txq_scd_cfg cfg = {
 		.fifo = fifo,
@@ -851,11 +853,12 @@ static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue,
 		.aggregate = sta_id >= 0,
 	};
 
-	iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg);
+	iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg, queue_wdg_timeout);
 }
 
-static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
-					   int fifo)
+static inline
+void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo,
+			     unsigned int queue_wdg_timeout)
 {
 	struct iwl_trans_txq_scd_cfg cfg = {
 		.fifo = fifo,
@@ -865,16 +868,16 @@ static inline void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue,
 		.aggregate = false,
 	};
 
-	iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg);
+	iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout);
 }
 
 static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans,
-						u32 txq_bm)
+						u32 txqs)
 {
 	if (unlikely(trans->state != IWL_TRANS_FW_ALIVE))
 		IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state);
 
-	return trans->ops->wait_tx_queue_empty(trans, txq_bm);
+	return trans->ops->wait_tx_queue_empty(trans, txqs);
 }
 
 static inline int iwl_trans_dbgfs_register(struct iwl_trans *trans,

drivers/net/wireless/iwlwifi/mvm/constants.h

@@ -99,7 +99,7 @@
 #define IWL_MVM_BT_COEX_ANTENNA_COUPLING_THRS	30
 #define IWL_MVM_FW_MCAST_FILTER_PASS_ALL	0
 #define IWL_MVM_FW_BCAST_FILTER_PASS_ALL	0
-#define IWL_MVM_QUOTA_THRESHOLD			8
+#define IWL_MVM_QUOTA_THRESHOLD			4
 #define IWL_MVM_RS_RSSI_BASED_INIT_RATE         0
 #define IWL_MVM_RS_DISABLE_P2P_MIMO		0
 #define IWL_MVM_RS_NUM_TRY_BEFORE_ANT_TOGGLE    1

drivers/net/wireless/iwlwifi/mvm/fw-api-rs.h

@@ -308,16 +308,41 @@ enum {
 #define LQ_FLAG_DYNAMIC_BW_POS          6
 #define LQ_FLAG_DYNAMIC_BW_MSK          (1 << LQ_FLAG_DYNAMIC_BW_POS)
 
-/* Single Stream Parameters
- * SS_STBC/BFER_ALLOWED - Controls whether STBC or Beamformer (BFER) is allowed
- * ucode will make a smart decision between SISO/STBC/BFER
- * SS_PARAMS_VALID - if not set ignore the ss_params field.
+/* Single Stream Tx Parameters (lq_cmd->ss_params)
+ * Flags to control a smart FW decision about whether BFER/STBC/SISO will be
+ * used for single stream Tx.
  */
-enum {
-	RS_SS_STBC_ALLOWED = BIT(0),
-	RS_SS_BFER_ALLOWED = BIT(1),
-	RS_SS_PARAMS_VALID = BIT(31),
-};
+
+/* Bit 0-1: Max STBC streams allowed. Can be 0-3.
+ * (0) - No STBC allowed
+ * (1) - 2x1 STBC allowed (HT/VHT)
+ * (2) - 4x2 STBC allowed (HT/VHT)
+ * (3) - 3x2 STBC allowed (HT only)
+ * All our chips are at most 2 antennas so only (1) is valid for now.
+ */
+#define LQ_SS_STBC_ALLOWED_POS          0
+#define LQ_SS_STBC_ALLOWED_MSK		(3 << LQ_SS_STBC_ALLOWED_MSK)
+
+/* 2x1 STBC is allowed */
+#define LQ_SS_STBC_1SS_ALLOWED		(1 << LQ_SS_STBC_ALLOWED_POS)
+
+/* Bit 2: Beamformer (VHT only) is allowed */
+#define LQ_SS_BFER_ALLOWED_POS		2
+#define LQ_SS_BFER_ALLOWED		(1 << LQ_SS_BFER_ALLOWED_POS)
+
+/* Bit 3: Force BFER or STBC for testing
+ * If this is set:
+ * If BFER is allowed then force the ucode to choose BFER else
+ * If STBC is allowed then force the ucode to choose STBC over SISO
+ */
+#define LQ_SS_FORCE_POS			3
+#define LQ_SS_FORCE			(1 << LQ_SS_FORCE_POS)
+
+/* Bit 31: ss_params field is valid. Used for FW backward compatibility
+ * with other drivers which don't support the ss_params API yet
+ */
+#define LQ_SS_PARAMS_VALID_POS		31
+#define LQ_SS_PARAMS_VALID		(1 << LQ_SS_PARAMS_VALID_POS)
 
 /**
  * struct iwl_lq_cmd - link quality command

drivers/net/wireless/iwlwifi/mvm/fw.c

@@ -575,7 +575,8 @@ int iwl_mvm_up(struct iwl_mvm *mvm)
 		goto error;
 	}
 
-	iwl_mvm_get_shared_mem_conf(mvm);
+	if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 10)
+		iwl_mvm_get_shared_mem_conf(mvm);
 
 	ret = iwl_mvm_sf_update(mvm, NULL, false);
 	if (ret)

drivers/net/wireless/iwlwifi/mvm/mac-ctxt.c

@@ -462,6 +462,9 @@ static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm,
 
 int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
+	unsigned int wdg_timeout = iwlmvm_mod_params.tfd_q_hang_detect ?
+					mvm->cfg->base_params->wd_timeout :
+					IWL_WATCHDOG_DISABLED;
 	u32 ac;
 	int ret;
 
@@ -474,16 +477,17 @@ int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 	switch (vif->type) {
 	case NL80211_IFTYPE_P2P_DEVICE:
 		iwl_mvm_enable_ac_txq(mvm, IWL_MVM_OFFCHANNEL_QUEUE,
-				      IWL_MVM_TX_FIFO_VO);
+				      IWL_MVM_TX_FIFO_VO, wdg_timeout);
 		break;
 	case NL80211_IFTYPE_AP:
 		iwl_mvm_enable_ac_txq(mvm, vif->cab_queue,
-				      IWL_MVM_TX_FIFO_MCAST);
+				      IWL_MVM_TX_FIFO_MCAST, wdg_timeout);
 		/* fall through */
 	default:
 		for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
 			iwl_mvm_enable_ac_txq(mvm, vif->hw_queue[ac],
-					      iwl_mvm_ac_to_tx_fifo[ac]);
+					      iwl_mvm_ac_to_tx_fifo[ac],
+					      wdg_timeout);
 		break;
 	}