iwlwifi: integrate with iwlmei

This allows to cooperate with iwlmei.

Co-Developed-by: Ayala Beker <ayala.beker@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c

@@ -22,6 +22,7 @@
 #include "fw/api/commands.h"
 #include "fw/api/cmdhdr.h"
 #include "fw/img.h"
+#include "mei/iwl-mei.h"
 
 /* NVM offsets (in words) definitions */
 enum nvm_offsets {
@@ -1060,6 +1061,66 @@ iwl_nvm_no_wide_in_5ghz(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 	return false;
 }
 
+struct iwl_nvm_data *
+iwl_parse_mei_nvm_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
+		       const struct iwl_mei_nvm *mei_nvm,
+		       const struct iwl_fw *fw)
+{
+	struct iwl_nvm_data *data;
+	u32 sbands_flags = 0;
+	u8 rx_chains = fw->valid_rx_ant;
+	u8 tx_chains = fw->valid_rx_ant;
+
+	if (cfg->uhb_supported)
+		data = kzalloc(struct_size(data, channels,
+					   IWL_NVM_NUM_CHANNELS_UHB),
+					   GFP_KERNEL);
+	else
+		data = kzalloc(struct_size(data, channels,
+					   IWL_NVM_NUM_CHANNELS_EXT),
+					   GFP_KERNEL);
+	if (!data)
+		return NULL;
+
+	BUILD_BUG_ON(ARRAY_SIZE(mei_nvm->channels) !=
+		     IWL_NVM_NUM_CHANNELS_UHB);
+	data->nvm_version = mei_nvm->nvm_version;
+
+	iwl_set_radio_cfg(cfg, data, mei_nvm->radio_cfg);
+	if (data->valid_tx_ant)
+		tx_chains &= data->valid_tx_ant;
+	if (data->valid_rx_ant)
+		rx_chains &= data->valid_rx_ant;
+
+	data->sku_cap_mimo_disabled = false;
+	data->sku_cap_band_24ghz_enable = true;
+	data->sku_cap_band_52ghz_enable = true;
+	data->sku_cap_11n_enable =
+		!(iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL);
+	data->sku_cap_11ac_enable = true;
+	data->sku_cap_11ax_enable =
+		mei_nvm->caps & MEI_NVM_CAPS_11AX_SUPPORT;
+
+	data->lar_enabled = mei_nvm->caps & MEI_NVM_CAPS_LARI_SUPPORT;
+
+	data->n_hw_addrs = mei_nvm->n_hw_addrs;
+	/* If no valid mac address was found - bail out */
+	if (iwl_set_hw_address(trans, cfg, data, NULL, NULL)) {
+		kfree(data);
+		return NULL;
+	}
+
+	if (data->lar_enabled &&
+	    fw_has_capa(&fw->ucode_capa, IWL_UCODE_TLV_CAPA_LAR_SUPPORT))
+		sbands_flags |= IWL_NVM_SBANDS_FLAGS_LAR;
+
+	iwl_init_sbands(trans, data, mei_nvm->channels, tx_chains, rx_chains,
+			sbands_flags, true);
+
+	return data;
+}
+IWL_EXPORT_SYMBOL(iwl_parse_mei_nvm_data);
+
 struct iwl_nvm_data *
 iwl_parse_nvm_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 		   const struct iwl_fw *fw,

drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.h

@@ -1,13 +1,14 @@
 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2005-2015, 2018-2020 Intel Corporation
+ * Copyright (C) 2005-2015, 2018-2021 Intel Corporation
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
 #ifndef __iwl_nvm_parse_h__
 #define __iwl_nvm_parse_h__
 
 #include <net/cfg80211.h>
 #include "iwl-eeprom-parse.h"
+#include "mei/iwl-mei.h"
 
 /**
  * enum iwl_nvm_sbands_flags - modification flags for the channel profiles
@@ -81,4 +82,12 @@ void iwl_nvm_fixups(u32 hw_id, unsigned int section, u8 *data,
 struct iwl_nvm_data *iwl_get_nvm(struct iwl_trans *trans,
 				 const struct iwl_fw *fw);
 
+/**
+ * iwl_parse_mei_nvm_data - parse the mei_nvm_data and get an iwl_nvm_data
+ */
+struct iwl_nvm_data *
+iwl_parse_mei_nvm_data(struct iwl_trans *trans, const struct iwl_cfg *cfg,
+		       const struct iwl_mei_nvm *mei_nvm,
+		       const struct iwl_fw *fw);
+
 #endif /* __iwl_nvm_parse_h__ */

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

@@ -902,6 +902,7 @@ struct iwl_trans_txqs {
 /**
  * struct iwl_trans - transport common data
  *
+ * @csme_own - true if we couldn't get ownership on the device
  * @ops - pointer to iwl_trans_ops
  * @op_mode - pointer to the op_mode
  * @trans_cfg: the trans-specific configuration part
@@ -936,6 +937,7 @@ struct iwl_trans_txqs {
  * @iwl_trans_txqs: transport tx queues data.
  */
 struct iwl_trans {
+	bool csme_own;
 	const struct iwl_trans_ops *ops;
 	struct iwl_op_mode *op_mode;
 	const struct iwl_cfg_trans_params *trans_cfg;

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

@@ -796,6 +796,8 @@ int iwl_mvm_sar_select_profile(struct iwl_mvm *mvm, int prof_a, int prof_b)
 	if (ret)
 		return ret;
 
+	iwl_mei_set_power_limit(per_chain);
+
 	IWL_DEBUG_RADIO(mvm, "Sending REDUCE_TX_POWER_CMD per chain\n");
 	return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0, len, &cmd);
 }
@@ -1392,7 +1394,6 @@ static int iwl_mvm_load_rt_fw(struct iwl_mvm *mvm)
 	if (iwl_mvm_has_unified_ucode(mvm))
 		return iwl_run_unified_mvm_ucode(mvm);
 
-	WARN_ON(!mvm->nvm_data);
 	ret = iwl_run_init_mvm_ucode(mvm);
 
 	if (ret) {

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2012-2014, 2018-2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -189,6 +189,7 @@ struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 	if (IS_ERR_OR_NULL(resp)) {
 		IWL_DEBUG_LAR(mvm, "Could not get update from FW %d\n",
 			      PTR_ERR_OR_ZERO(resp));
+		resp = NULL;
 		goto out;
 	}
 
@@ -210,7 +211,6 @@ struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 				      __le16_to_cpu(resp->cap), resp_ver);
 	/* Store the return source id */
 	src_id = resp->source_id;
-	kfree(resp);
 	if (IS_ERR_OR_NULL(regd)) {
 		IWL_DEBUG_LAR(mvm, "Could not get parse update from FW %d\n",
 			      PTR_ERR_OR_ZERO(regd));
@@ -222,7 +222,10 @@ struct ieee80211_regdomain *iwl_mvm_get_regdomain(struct wiphy *wiphy,
 	mvm->lar_regdom_set = true;
 	mvm->mcc_src = src_id;
 
+	iwl_mei_set_country_code(__le16_to_cpu(resp->mcc));
+
 out:
+	kfree(resp);
 	return regd;
 }
 
@@ -1082,6 +1085,27 @@ int __iwl_mvm_mac_start(struct iwl_mvm *mvm)
 
 	lockdep_assert_held(&mvm->mutex);
 
+	ret = iwl_mvm_mei_get_ownership(mvm);
+	if (ret)
+		return ret;
+
+	if (mvm->mei_nvm_data) {
+		/* We got the NIC, we can now free the MEI NVM data */
+		kfree(mvm->mei_nvm_data);
+		mvm->mei_nvm_data = NULL;
+
+		/*
+		 * We can't free the nvm_data we allocated based on the SAP
+		 * data because we registered to cfg80211 with the channels
+		 * allocated on mvm->nvm_data. Keep a pointer in temp_nvm_data
+		 * just in order to be able free it later.
+		 * NULLify nvm_data so that we will read the NVM from the
+		 * firmware this time.
+		 */
+		mvm->temp_nvm_data = mvm->nvm_data;
+		mvm->nvm_data = NULL;
+	}
+
 	if (test_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status)) {
 		/*
 		 * Now convert the HW_RESTART_REQUESTED flag to IN_HW_RESTART
@@ -1506,6 +1530,15 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
 		mvm->monitor_on = true;
 
 	iwl_mvm_vif_dbgfs_register(mvm, vif);
+
+	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
+	    vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&
+	    !mvm->csme_vif && mvm->mei_registered) {
+		iwl_mei_set_nic_info(vif->addr, mvm->nvm_data->hw_addr);
+		iwl_mei_set_netdev(ieee80211_vif_to_wdev(vif)->netdev);
+		mvm->csme_vif = vif;
+	}
+
 	goto out_unlock;
 
  out_unbind:
@@ -1558,6 +1591,11 @@ static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
 
 	mutex_lock(&mvm->mutex);
 
+	if (vif == mvm->csme_vif) {
+		iwl_mei_set_netdev(NULL);
+		mvm->csme_vif = NULL;
+	}
+
 	probe_data = rcu_dereference_protected(mvmvif->probe_resp_data,
 					       lockdep_is_held(&mvm->mutex));
 	RCU_INIT_POINTER(mvmvif->probe_resp_data, NULL);

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

@@ -28,6 +28,7 @@
 #include "fw/runtime.h"
 #include "fw/dbg.h"
 #include "fw/acpi.h"
+#include "mei/iwl-mei.h"
 #include "iwl-nvm-parse.h"
 
 #include <linux/average.h>
@@ -828,6 +829,18 @@ struct iwl_mvm {
 
 	const char *nvm_file_name;
 	struct iwl_nvm_data *nvm_data;
+	struct iwl_mei_nvm *mei_nvm_data;
+	struct iwl_mvm_csme_conn_info __rcu *csme_conn_info;
+	bool mei_rfkill_blocked;
+	bool mei_registered;
+	struct work_struct sap_connected_wk;
+
+	/*
+	 * NVM built based on the SAP data but that we can't free even after
+	 * we get ownership because it contains the cfg80211's channel.
+	 */
+	struct iwl_nvm_data *temp_nvm_data;
+
 	/* NVM sections */
 	struct iwl_nvm_section nvm_sections[NVM_MAX_NUM_SECTIONS];
 
@@ -1017,6 +1030,8 @@ struct iwl_mvm {
 	/* Indicate if 32Khz external clock is valid */
 	u32 ext_clock_valid;
 
+	/* This vif used by CSME to send / receive traffic */
+	struct ieee80211_vif *csme_vif;
 	struct ieee80211_vif __rcu *csa_vif;
 	struct ieee80211_vif __rcu *csa_tx_blocked_vif;
 	u8 csa_tx_block_bcn_timeout;
@@ -1129,6 +1144,11 @@ enum iwl_mvm_status {
 	IWL_MVM_STATUS_IN_D3,
 };
 
+struct iwl_mvm_csme_conn_info {
+	struct rcu_head rcu_head;
+	struct iwl_mei_conn_info conn_info;
+};
+
 /* Keep track of completed init configuration */
 enum iwl_mvm_init_status {
 	IWL_MVM_INIT_STATUS_THERMAL_INIT_COMPLETE = BIT(0),
@@ -1920,6 +1940,7 @@ void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb);
 void iwl_mvm_enter_ctkill(struct iwl_mvm *mvm);
 int iwl_mvm_send_temp_report_ths_cmd(struct iwl_mvm *mvm);
 int iwl_mvm_ctdp_command(struct iwl_mvm *mvm, u32 op, u32 budget);
+struct iwl_mvm_csme_conn_info *iwl_mvm_get_csme_conn_info(struct iwl_mvm *mvm);
 
 /* Location Aware Regulatory */
 struct iwl_mcc_update_resp *
@@ -2138,4 +2159,53 @@ enum iwl_location_cipher iwl_mvm_cipher_to_location_cipher(u32 cipher)
 		return IWL_LOCATION_CIPHER_INVALID;
 	}
 }
+
+static inline int iwl_mvm_mei_get_ownership(struct iwl_mvm *mvm)
+{
+	if (mvm->mei_registered)
+		return iwl_mei_get_ownership();
+	return 0;
+}
+
+static inline void iwl_mvm_mei_tx_copy_to_csme(struct iwl_mvm *mvm,
+					       struct sk_buff *skb,
+					       unsigned int ivlen)
+{
+	if (mvm->mei_registered)
+		iwl_mei_tx_copy_to_csme(skb, ivlen);
+}
+
+static inline void iwl_mvm_mei_host_associated(struct iwl_mvm *mvm,
+					       const struct iwl_mei_conn_info *conn_info,
+					       const struct iwl_mei_colloc_info *colloc_info)
+{
+	if (mvm->mei_registered)
+		iwl_mei_host_associated(conn_info, colloc_info);
+}
+
+static inline void iwl_mvm_mei_host_disassociated(struct iwl_mvm *mvm, u8 type)
+{
+	if (mvm->mei_registered)
+		iwl_mei_host_disassociated(type);
+}
+
+static inline void iwl_mvm_mei_device_down(struct iwl_mvm *mvm)
+{
+	if (mvm->mei_registered)
+		iwl_mei_device_down();
+}
+
+static inline void iwl_mvm_mei_set_sw_rfkill_state(struct iwl_mvm *mvm, bool sw_rfkill)
+{
+	if (mvm->mei_registered)
+		iwl_mei_set_rfkill_state(iwl_mvm_is_radio_killed(mvm), sw_rfkill);
+}
+
+static inline void iwl_mvm_send_roaming_forbidden_event(struct iwl_mvm *mvm,
+							struct ieee80211_vif *vif,
+							bool forbidden)
+{
+	/* TODO */
+}
+
 #endif /* __IWL_MVM_H__ */