iwlwifi: fw api: support the new scan request FW API version

Remove fragmented_dwell_time and add num_of_fragments to support
the new API version.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

4 files changed, 136 insertions, 54 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
index 620862c4c79b..7af3a0f51b77 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/scan.h
@@ -30,6 +30,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -590,6 +591,15 @@ enum iwl_umac_scan_general_flags {
 };
 
 /**
+ * enum iwl_umac_scan_general_flags2 - UMAC scan general flags #2
+ * @IWL_UMAC_SCAN_GEN_FLAGS2_NOTIF_PER_CHNL: Whether to send a complete
+ *	notification per channel or not.
+ */
+enum iwl_umac_scan_general_flags2 {
+	IWL_UMAC_SCAN_GEN_FLAGS2_NOTIF_PER_CHNL	= BIT(0),
+};
+
+/**
  * struct iwl_scan_channel_cfg_umac
  * @flags:		bitmap - 0-19:	directed scan to i'th ssid.
  * @channel_num:	channel number 1-13 etc.
@@ -635,6 +645,18 @@ struct iwl_scan_req_umac_tail {
 } __packed;
 
 /**
+ * struct iwl_scan_umac_chan_param
+ * @flags: channel flags &enum iwl_scan_channel_flags
+ * @count: num of channels in scan request
+ * @reserved: for future use and alignment
+ */
+struct iwl_scan_umac_chan_param {
+	u8 flags;
+	u8 count;
+	__le16 reserved;
+} __packed; /*SCAN_CHANNEL_PARAMS_API_S_VER_1 */
+
+/**
  * struct iwl_scan_req_umac
  * @flags: &enum iwl_umac_scan_flags
  * @uid: scan id, &enum iwl_umac_scan_uid_offsets
@@ -642,23 +664,24 @@ struct iwl_scan_req_umac_tail {
  * @general_flags: &enum iwl_umac_scan_general_flags
  * @scan_start_mac_id: report the scan start TSF time according to this mac TSF
  * @extended_dwell: dwell time for channels 1, 6 and 11
- * @active_dwell: dwell time for active scan
- * @passive_dwell: dwell time for passive scan
+ * @active_dwell: dwell time for active scan per LMAC
+ * @passive_dwell: dwell time for passive scan per LMAC
  * @fragmented_dwell: dwell time for fragmented passive scan
  * @adwell_default_n_aps: for adaptive dwell the default number of APs
  *	per channel
  * @adwell_default_n_aps_social: for adaptive dwell the default
  *	number of APs per social (1,6,11) channel
+ * @general_flags2: &enum iwl_umac_scan_general_flags2
  * @adwell_max_budget: for adaptive dwell the maximal budget of TU to be added
  *	to total scan time
  * @max_out_time: max out of serving channel time, per LMAC - for CDB there
  *	are 2 LMACs
  * @suspend_time: max suspend time, per LMAC - for CDB there are 2 LMACs
  * @scan_priority: scan internal prioritization &enum iwl_scan_priority
- * @channel_flags: &enum iwl_scan_channel_flags
- * @n_channels: num of channels in scan request
+ * @num_of_fragments: Number of fragments needed for full coverage per band.
+ *	Relevant only for fragmented scan.
+ * @channel: &struct iwl_scan_umac_chan_param
  * @reserved: for future use and alignment
- * @reserved2: for future use and alignment
  * @reserved3: for future use and alignment
  * @data: &struct iwl_scan_channel_cfg_umac and
  *	&struct iwl_scan_req_umac_tail
@@ -679,10 +702,7 @@ struct iwl_scan_req_umac {
 			__le32 max_out_time;
 			__le32 suspend_time;
 			__le32 scan_priority;
-			/* SCAN_CHANNEL_PARAMS_API_S_VER_1 */
-			u8 channel_flags;
-			u8 n_channels;
-			__le16 reserved2;
+			struct iwl_scan_umac_chan_param channel;
 			u8 data[];
 		} v1; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_1 */
 		struct {
@@ -693,10 +713,7 @@ struct iwl_scan_req_umac {
 			__le32 max_out_time[SCAN_TWO_LMACS];
 			__le32 suspend_time[SCAN_TWO_LMACS];
 			__le32 scan_priority;
-			/* SCAN_CHANNEL_PARAMS_API_S_VER_1 */
-			u8 channel_flags;
-			u8 n_channels;
-			__le16 reserved2;
+			struct iwl_scan_umac_chan_param channel;
 			u8 data[];
 		} v6; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_6 */
 		struct {
@@ -710,16 +727,30 @@ struct iwl_scan_req_umac {
 			__le32 max_out_time[SCAN_TWO_LMACS];
 			__le32 suspend_time[SCAN_TWO_LMACS];
 			__le32 scan_priority;
-			/* SCAN_CHANNEL_PARAMS_API_S_VER_1 */
-			u8 channel_flags;
-			u8 n_channels;
-			__le16 reserved2;
+			struct iwl_scan_umac_chan_param channel;
 			u8 data[];
 		} v7; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_7 */
+		struct {
+			u8 active_dwell[SCAN_TWO_LMACS];
+			u8 reserved2;
+			u8 adwell_default_n_aps;
+			u8 adwell_default_n_aps_social;
+			u8 general_flags2;
+			__le16 adwell_max_budget;
+			__le32 max_out_time[SCAN_TWO_LMACS];
+			__le32 suspend_time[SCAN_TWO_LMACS];
+			__le32 scan_priority;
+			u8 passive_dwell[SCAN_TWO_LMACS];
+			u8 num_of_fragments[SCAN_TWO_LMACS];
+			struct iwl_scan_umac_chan_param channel;
+			u8 data[];
+		} v8; /* SCAN_REQUEST_CMD_UMAC_API_S_VER_8 */
 	};
 } __packed;
 
-#define IWL_SCAN_REQ_UMAC_SIZE_V7 sizeof(struct iwl_scan_req_umac)
+#define IWL_SCAN_REQ_UMAC_SIZE_V8 sizeof(struct iwl_scan_req_umac)
+#define IWL_SCAN_REQ_UMAC_SIZE_V7 (sizeof(struct iwl_scan_req_umac) - \
+					 4 * sizeof(u8))
 #define IWL_SCAN_REQ_UMAC_SIZE_V6 (sizeof(struct iwl_scan_req_umac) - \
 				   2 * sizeof(u8) - sizeof(__le16))
 #define IWL_SCAN_REQ_UMAC_SIZE_V1 (sizeof(struct iwl_scan_req_umac) - \
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/file.h b/drivers/net/wireless/intel/iwlwifi/fw/file.h
index f8c2dac12c66..2bea95bf4fc9 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/file.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/file.h
@@ -250,6 +250,8 @@ typedef unsigned int __bitwise iwl_ucode_tlv_api_t;
  *	indicating low latency direction.
  * @IWL_UCODE_TLV_API_DEPRECATE_TTAK: RX status flag TTAK ok (bit 7) is
  *	deprecated.
+ * @IWL_UCODE_TLV_API_ADAPTIVE_DWELL_V2: This ucode supports version 8
+ *	of scan request: SCAN_REQUEST_CMD_UMAC_API_S_VER_8
  *
  * @NUM_IWL_UCODE_TLV_API: number of bits used
  */
@@ -270,6 +272,7 @@ enum iwl_ucode_tlv_api {
 	IWL_UCODE_TLV_API_NEW_RX_STATS		= (__force iwl_ucode_tlv_api_t)35,
 	IWL_UCODE_TLV_API_QUOTA_LOW_LATENCY	= (__force iwl_ucode_tlv_api_t)38,
 	IWL_UCODE_TLV_API_DEPRECATE_TTAK	= (__force iwl_ucode_tlv_api_t)41,
+	IWL_UCODE_TLV_API_ADAPTIVE_DWELL_V2	= (__force iwl_ucode_tlv_api_t)42,
 
 	NUM_IWL_UCODE_TLV_API
 #ifdef __CHECKER__
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
index bd87cdb36fb2..82445e12aacb 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h
@@ -1155,6 +1155,12 @@ static inline bool iwl_mvm_is_adaptive_dwell_supported(struct iwl_mvm *mvm)
 			  IWL_UCODE_TLV_API_ADAPTIVE_DWELL);
 }
 
+static inline bool iwl_mvm_is_adaptive_dwell_v2_supported(struct iwl_mvm *mvm)
+{
+	return fw_has_api(&mvm->fw->ucode_capa,
+			  IWL_UCODE_TLV_API_ADAPTIVE_DWELL_V2);
+}
+
 static inline bool iwl_mvm_is_oce_supported(struct iwl_mvm *mvm)
 {
 	/* OCE should never be enabled for LMAC scan FWs */
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index b756d9d0199f..b31f0ffbbbf0 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -35,6 +35,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright(c) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -85,6 +86,8 @@ enum iwl_mvm_traffic_load {
 #define IWL_SCAN_DWELL_PASSIVE		110
 #define IWL_SCAN_DWELL_FRAGMENTED	44
 #define IWL_SCAN_DWELL_EXTENDED		90
+#define IWL_SCAN_NUM_OF_FRAGS		3
+
 
 /* adaptive dwell max budget time [TU] for full scan */
 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
@@ -143,6 +146,9 @@ static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 {
 	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		return (void *)&cmd->v8.data;
+
 	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 		return (void *)&cmd->v7.data;
 
@@ -152,6 +158,23 @@ static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 	return (void *)&cmd->v1.data;
 }
 
+static inline struct iwl_scan_umac_chan_param *
+iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
+{
+	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
+
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		return &cmd->v8.channel;
+
+	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
+		return &cmd->v7.channel;
+
+	if (iwl_mvm_has_new_tx_api(mvm))
+		return &cmd->v6.channel;
+
+	return &cmd->v1.channel;
+}
+
 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 {
 	if (mvm->scan_rx_ant != ANT_NONE)
@@ -1122,17 +1145,16 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
 				    struct iwl_scan_req_umac *cmd,
 				    struct iwl_mvm_scan_params *params)
 {
-	struct iwl_mvm_scan_timing_params *timing = &scan_timing[params->type];
+	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
+	u8 active_dwell, passive_dwell;
+
+	timing = &scan_timing[params->type];
+	active_dwell = params->measurement_dwell ?
+		params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
+	passive_dwell = params->measurement_dwell ?
+		params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
 
 	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
-		if (params->measurement_dwell) {
-			cmd->v7.active_dwell = params->measurement_dwell;
-			cmd->v7.passive_dwell = params->measurement_dwell;
-		} else {
-			cmd->v7.active_dwell = IWL_SCAN_DWELL_ACTIVE;
-			cmd->v7.passive_dwell = IWL_SCAN_DWELL_PASSIVE;
-		}
-		cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 		cmd->v7.adwell_default_n_aps_social =
 			IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
 		cmd->v7.adwell_default_n_aps =
@@ -1154,26 +1176,39 @@ static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
 			cpu_to_le32(timing->max_out_time);
 		cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
 			cpu_to_le32(timing->suspend_time);
+
 		if (iwl_mvm_is_cdb_supported(mvm)) {
-			cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
-				cpu_to_le32(timing->max_out_time);
-			cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
-				cpu_to_le32(timing->suspend_time);
+			hb_timing = &scan_timing[params->type];
+
+			cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
+				cpu_to_le32(hb_timing->max_out_time);
+			cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
+				cpu_to_le32(hb_timing->suspend_time);
 		}
-	} else {
-		if (params->measurement_dwell) {
-			cmd->v1.active_dwell = params->measurement_dwell;
-			cmd->v1.passive_dwell = params->measurement_dwell;
-			cmd->v1.extended_dwell = params->measurement_dwell;
+
+		if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
+			cmd->v7.active_dwell = active_dwell;
+			cmd->v7.passive_dwell = passive_dwell;
+			cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 		} else {
-			cmd->v1.active_dwell = IWL_SCAN_DWELL_ACTIVE;
-			cmd->v1.passive_dwell = IWL_SCAN_DWELL_PASSIVE;
-			cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
+			cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
+			cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
+			if (iwl_mvm_is_cdb_supported(mvm)) {
+				cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
+					active_dwell;
+				cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
+					passive_dwell;
+			}
 		}
+	} else {
+		cmd->v1.extended_dwell = params->measurement_dwell ?
+			params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED;
+		cmd->v1.active_dwell = active_dwell;
+		cmd->v1.passive_dwell = passive_dwell;
 		cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
+
 		if (iwl_mvm_is_cdb_supported(mvm)) {
-			struct iwl_mvm_scan_timing_params *hb_timing =
-				&scan_timing[params->type];
+			hb_timing = &scan_timing[params->type];
 
 			cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
 					cpu_to_le32(hb_timing->max_out_time);
@@ -1298,6 +1333,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 			     int type)
 {
 	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
+	struct iwl_scan_umac_chan_param *chan_param;
 	void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
 	struct iwl_scan_req_umac_tail *sec_part = cmd_data +
 		sizeof(struct iwl_scan_channel_cfg_umac) *
@@ -1305,8 +1341,11 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	int uid, i;
 	u32 ssid_bitmap = 0;
 	u8 channel_flags = 0;
+	u16 gen_flags;
 	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
 
+	chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
+
 	lockdep_assert_held(&mvm->mutex);
 
 	if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
@@ -1323,8 +1362,17 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 	mvm->scan_uid_status[uid] = type;
 
 	cmd->uid = cpu_to_le32(uid);
-	cmd->general_flags = cpu_to_le16(iwl_mvm_scan_umac_flags(mvm, params,
-								 vif));
+	gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
+	cmd->general_flags = cpu_to_le16(gen_flags);
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
+		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
+			cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
+							IWL_SCAN_NUM_OF_FRAGS;
+		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
+			cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
+							IWL_SCAN_NUM_OF_FRAGS;
+	}
+
 	cmd->scan_start_mac_id = scan_vif->id;
 
 	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
@@ -1335,16 +1383,8 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 				IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 				IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
 
-	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
-		cmd->v7.channel_flags = channel_flags;
-		cmd->v7.n_channels = params->n_channels;
-	} else if (iwl_mvm_has_new_tx_api(mvm)) {
-		cmd->v6.channel_flags = channel_flags;
-		cmd->v6.n_channels = params->n_channels;
-	} else {
-		cmd->v1.channel_flags = channel_flags;
-		cmd->v1.n_channels = params->n_channels;
-	}
+	chan_param->flags = channel_flags;
+	chan_param->count = params->n_channels;
 
 	iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
 
@@ -1783,7 +1823,9 @@ int iwl_mvm_scan_size(struct iwl_mvm *mvm)
 {
 	int base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
 
-	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
+	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
+		base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
+	else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 		base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
 	else if (iwl_mvm_has_new_tx_api(mvm))
 		base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;