iwlwifi: mvm: support new scan API

For CDB devices we will want to configure scan parameters
per band.
Support the new scan API for now. Logic per band will be
added in the future.

Signed-off-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

1 files changed, 162 insertions, 66 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
index 2aaa5ecf97bc..0a64efa844b7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -943,18 +943,92 @@ static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
 	return cpu_to_le32(rates);
 }
 
-int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
+				    struct iwl_scan_dwell *dwell,
+				    struct iwl_mvm_scan_timing_params *timing)
+{
+	dwell->active = timing->dwell_active;
+	dwell->passive = timing->dwell_passive;
+	dwell->fragmented = timing->dwell_fragmented;
+	dwell->extended = timing->dwell_extended;
+}
+
+static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels)
 {
-	struct iwl_scan_config *scan_config;
 	struct ieee80211_supported_band *band;
-	int num_channels =
-		mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
-		mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
-	int ret, i, j = 0, cmd_size;
+	int i, j = 0;
+
+	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
+	for (i = 0; i < band->n_channels; i++, j++)
+		channels[j] = band->channels[i].hw_value;
+	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
+	for (i = 0; i < band->n_channels; i++, j++)
+		channels[j] = band->channels[i].hw_value;
+}
+
+static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
+				     u32 flags, u8 channel_flags)
+{
+	enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
+	struct iwl_scan_config *cfg = config;
+
+	cfg->flags = cpu_to_le32(flags);
+	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
+	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
+	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
+	cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
+	cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
+
+	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell, &scan_timing[type]);
+
+	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
+
+	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
+	cfg->channel_flags = channel_flags;
+
+	iwl_mvm_fill_channels(mvm, cfg->channel_array);
+}
+
+static void iwl_mvm_fill_scan_config_cdb(struct iwl_mvm *mvm, void *config,
+					 u32 flags, u8 channel_flags)
+{
+	enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
+	struct iwl_scan_config_cdb *cfg = config;
+
+	cfg->flags = cpu_to_le32(flags);
+	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
+	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
+	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
+	cfg->out_of_channel_time[0] =
+		cpu_to_le32(scan_timing[type].max_out_time);
+	cfg->out_of_channel_time[1] =
+		cpu_to_le32(scan_timing[type].max_out_time);
+	cfg->suspend_time[0] = cpu_to_le32(scan_timing[type].suspend_time);
+	cfg->suspend_time[1] = cpu_to_le32(scan_timing[type].suspend_time);
+
+	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell, &scan_timing[type]);
+
+	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
+
+	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
+	cfg->channel_flags = channel_flags;
+
+	iwl_mvm_fill_channels(mvm, cfg->channel_array);
+}
+
+int iwl_mvm_config_scan(struct iwl_mvm *mvm)
+{
+	void *cfg;
+	int ret, cmd_size;
 	struct iwl_host_cmd cmd = {
 		.id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
 	};
 	enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
+	int num_channels =
+		mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
+		mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
+	u32 flags;
+	u8 channel_flags;
 
 	if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
 		return -ENOBUFS;
@@ -965,52 +1039,45 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
 		return 0;
 	}
 
-	cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels;
+	if (iwl_mvm_is_cdb_supported(mvm))
+		cmd_size = sizeof(struct iwl_scan_config_cdb);
+	else
+		cmd_size = sizeof(struct iwl_scan_config);
+	cmd_size += mvm->fw->ucode_capa.n_scan_channels;
 
-	scan_config = kzalloc(cmd_size, GFP_KERNEL);
-	if (!scan_config)
+	cfg = kzalloc(cmd_size, GFP_KERNEL);
+	if (!cfg)
 		return -ENOMEM;
 
-	scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
-					 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
-					 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
-					 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
-					 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
-					 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
-					 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
-					 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
-					 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
-					 SCAN_CONFIG_N_CHANNELS(num_channels) |
-					 (type == IWL_SCAN_TYPE_FRAGMENTED ?
-					  SCAN_CONFIG_FLAG_SET_FRAGMENTED :
-					  SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED));
-	scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
-	scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
-	scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm);
-	scan_config->out_of_channel_time =
-		cpu_to_le32(scan_timing[type].max_out_time);
-	scan_config->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
-	scan_config->dwell_active = scan_timing[type].dwell_active;
-	scan_config->dwell_passive = scan_timing[type].dwell_passive;
-	scan_config->dwell_fragmented = scan_timing[type].dwell_fragmented;
-	scan_config->dwell_extended = scan_timing[type].dwell_extended;
-
-	memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
-
-	scan_config->bcast_sta_id = mvm->aux_sta.sta_id;
-	scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS |
-				     IWL_CHANNEL_FLAG_ACCURATE_EBS |
-				     IWL_CHANNEL_FLAG_EBS_ADD |
-				     IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
-
-	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
-	for (i = 0; i < band->n_channels; i++, j++)
-		scan_config->channel_array[j] = band->channels[i].hw_value;
-	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
-	for (i = 0; i < band->n_channels; i++, j++)
-		scan_config->channel_array[j] = band->channels[i].hw_value;
+	flags = SCAN_CONFIG_FLAG_ACTIVATE |
+		 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
+		 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
+		 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
+		 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
+		 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
+		 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
+		 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
+		 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
+		 SCAN_CONFIG_N_CHANNELS(num_channels) |
+		 (type == IWL_SCAN_TYPE_FRAGMENTED ?
+		  SCAN_CONFIG_FLAG_SET_FRAGMENTED :
+		  SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
+
+	channel_flags = IWL_CHANNEL_FLAG_EBS |
+			IWL_CHANNEL_FLAG_ACCURATE_EBS |
+			IWL_CHANNEL_FLAG_EBS_ADD |
+			IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
+
+	if (iwl_mvm_is_cdb_supported(mvm)) {
+		flags |= (type == IWL_SCAN_TYPE_FRAGMENTED) ?
+			 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
+			 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
+		iwl_mvm_fill_scan_config_cdb(mvm, cfg, flags, channel_flags);
+	} else {
+		iwl_mvm_fill_scan_config(mvm, cfg, flags, channel_flags);
+	}
 
-	cmd.data[0] = scan_config;
+	cmd.data[0] = cfg;
 	cmd.len[0] = cmd_size;
 	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 
@@ -1020,7 +1087,7 @@ int iwl_mvm_config_scan(struct iwl_mvm *mvm)
 	if (!ret)
 		mvm->scan_type = type;
 
-	kfree(scan_config);
+	kfree(cfg);
 	return ret;
 }
 
@@ -1039,19 +1106,31 @@ 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];
+
 	if (params->measurement_dwell) {
 		cmd->active_dwell = params->measurement_dwell;
 		cmd->passive_dwell = params->measurement_dwell;
 		cmd->extended_dwell = params->measurement_dwell;
 	} else {
-		cmd->active_dwell = scan_timing[params->type].dwell_active;
-		cmd->passive_dwell = scan_timing[params->type].dwell_passive;
-		cmd->extended_dwell = scan_timing[params->type].dwell_extended;
+		cmd->active_dwell = timing->dwell_active;
+		cmd->passive_dwell = timing->dwell_passive;
+		cmd->extended_dwell = timing->dwell_extended;
+	}
+	cmd->fragmented_dwell = timing->dwell_fragmented;
+
+	if (iwl_mvm_is_cdb_supported(mvm)) {
+		cmd->cdb.max_out_time[0] = cpu_to_le32(timing->max_out_time);
+		cmd->cdb.suspend_time[0] = cpu_to_le32(timing->suspend_time);
+		cmd->cdb.max_out_time[1] = cpu_to_le32(timing->max_out_time);
+		cmd->cdb.suspend_time[1] = cpu_to_le32(timing->suspend_time);
+		cmd->cdb.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
+	} else {
+		cmd->no_cdb.max_out_time = cpu_to_le32(timing->max_out_time);
+		cmd->no_cdb.suspend_time = cpu_to_le32(timing->suspend_time);
+		cmd->no_cdb.scan_priority =
+			cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 	}
-	cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented;
-	cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
-	cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
-	cmd->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 
 	if (iwl_mvm_is_regular_scan(params))
 		cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
@@ -1063,9 +1142,8 @@ static void
 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
 			       struct ieee80211_channel **channels,
 			       int n_channels, u32 ssid_bitmap,
-			       struct iwl_scan_req_umac *cmd)
+			       struct iwl_scan_channel_cfg_umac *channel_cfg)
 {
-	struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data;
 	int i;
 
 	for (i = 0; i < n_channels; i++) {
@@ -1088,8 +1166,11 @@ static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
 	if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
 		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
 
-	if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
+	if (params->type == IWL_SCAN_TYPE_FRAGMENTED) {
 		flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
+		if (iwl_mvm_is_cdb_supported(mvm))
+			flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
+	}
 
 	if (iwl_mvm_rrm_scan_needed(mvm))
 		flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
@@ -1126,11 +1207,14 @@ 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_req_umac_tail *sec_part = (void *)&cmd->data +
+	void *cmd_data = iwl_mvm_is_cdb_supported(mvm) ?
+			 (void *)&cmd->cdb.data : (void *)&cmd->no_cdb.data;
+	struct iwl_scan_req_umac_tail *sec_part = cmd_data +
 		sizeof(struct iwl_scan_channel_cfg_umac) *
 			mvm->fw->ucode_capa.n_scan_channels;
 	int uid, i;
 	u32 ssid_bitmap = 0;
+	u8 channel_flags = 0;
 	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
 
 	lockdep_assert_held(&mvm->mutex);
@@ -1157,16 +1241,23 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 		cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
 
 	if (iwl_mvm_scan_use_ebs(mvm, vif))
-		cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
-				     IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
-				     IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
+		channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
+				IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
+				IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
 
-	cmd->n_channels = params->n_channels;
+	if (iwl_mvm_is_cdb_supported(mvm)) {
+		cmd->cdb.channel_flags = channel_flags;
+		cmd->cdb.n_channels = params->n_channels;
+	} else {
+		cmd->no_cdb.channel_flags = channel_flags;
+		cmd->no_cdb.n_channels = params->n_channels;
+	}
 
 	iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
 
 	iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
-				       params->n_channels, ssid_bitmap, cmd);
+				       params->n_channels, ssid_bitmap,
+				       cmd_data);
 
 	for (i = 0; i < params->n_scan_plans; i++) {
 		struct cfg80211_sched_scan_plan *scan_plan =
@@ -1601,8 +1692,13 @@ static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
 
 int iwl_mvm_scan_size(struct iwl_mvm *mvm)
 {
+	int base_size = IWL_SCAN_REQ_UMAC_SIZE;
+
+	if (iwl_mvm_is_cdb_supported(mvm))
+		base_size = IWL_SCAN_REQ_UMAC_SIZE_CDB;
+
 	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
-		return sizeof(struct iwl_scan_req_umac) +
+		return base_size +
 			sizeof(struct iwl_scan_channel_cfg_umac) *
 				mvm->fw->ucode_capa.n_scan_channels +
 			sizeof(struct iwl_scan_req_umac_tail);