1 files changed, 310 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tof.c b/drivers/net/wireless/intel/iwlwifi/mvm/tof.c
new file mode 100644
index 0000000..8d4ff24
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/tof.c
@@ -0,0 +1,310 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2015 Intel Deutschland GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called COPYING.
+ *
+ * Contact Information:
+ * Intel Linux Wireless <linuxwifi@intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2015 Intel Deutschland GmbH
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#include "mvm.h"
+#include "fw/api/tof.h"
+
+#define IWL_MVM_TOF_RANGE_REQ_MAX_ID 256
+
+void iwl_mvm_tof_init(struct iwl_mvm *mvm)
+{
+	struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return;
+
+	memset(tof_data, 0, sizeof(*tof_data));
+
+	tof_data->tof_cfg.sub_grp_cmd_id = cpu_to_le32(TOF_CONFIG_CMD);
+
+#ifdef CPTCFG_IWLWIFI_DEBUGFS
+	if (IWL_MVM_TOF_IS_RESPONDER) {
+		tof_data->responder_cfg.sub_grp_cmd_id =
+			cpu_to_le32(TOF_RESPONDER_CONFIG_CMD);
+		tof_data->responder_cfg.sta_id = IWL_MVM_INVALID_STA;
+	}
+#endif
+
+	tof_data->range_req.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_REQ_CMD);
+	tof_data->range_req.req_timeout = 1;
+	tof_data->range_req.initiator = 1;
+	tof_data->range_req.report_policy = 3;
+
+	tof_data->range_req_ext.sub_grp_cmd_id =
+		cpu_to_le32(TOF_RANGE_REQ_EXT_CMD);
+
+	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
+	mvm->init_status |= IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
+}
+
+void iwl_mvm_tof_clean(struct iwl_mvm *mvm)
+{
+	struct iwl_mvm_tof_data *tof_data = &mvm->tof_data;
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa,
+			 IWL_UCODE_TLV_CAPA_TOF_SUPPORT) ||
+	    !(mvm->init_status & IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE))
+		return;
+
+	memset(tof_data, 0, sizeof(*tof_data));
+	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
+	mvm->init_status &= ~IWL_MVM_INIT_STATUS_TOF_INIT_COMPLETE;
+}
+
+static void iwl_tof_iterator(void *_data, u8 *mac,
+			     struct ieee80211_vif *vif)
+{
+	bool *enabled = _data;
+
+	/* non bss vif exists */
+	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION)
+		*enabled = false;
+}
+
+int iwl_mvm_tof_config_cmd(struct iwl_mvm *mvm)
+{
+	struct iwl_tof_config_cmd *cmd = &mvm->tof_data.tof_cfg;
+	bool enabled;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return -EINVAL;
+
+	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
+						   IEEE80211_IFACE_ITER_NORMAL,
+						   iwl_tof_iterator, &enabled);
+	if (!enabled) {
+		IWL_DEBUG_INFO(mvm, "ToF is not supported (non bss vif)\n");
+		return -EINVAL;
+	}
+
+	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
+	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
+						    IWL_ALWAYS_LONG_GROUP, 0),
+				    0, sizeof(*cmd), cmd);
+}
+
+int iwl_mvm_tof_range_abort_cmd(struct iwl_mvm *mvm, u8 id)
+{
+	struct iwl_tof_range_abort_cmd cmd = {
+		.sub_grp_cmd_id = cpu_to_le32(TOF_RANGE_ABORT_CMD),
+		.request_id = id,
+	};
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return -EINVAL;
+
+	if (id != mvm->tof_data.active_range_request) {
+		IWL_ERR(mvm, "Invalid range request id %d (active %d)\n",
+			id, mvm->tof_data.active_range_request);
+		return -EINVAL;
+	}
+
+	/* after abort is sent there's no active request anymore */
+	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
+
+	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
+						    IWL_ALWAYS_LONG_GROUP, 0),
+				    0, sizeof(cmd), &cmd);
+}
+
+#ifdef CPTCFG_IWLWIFI_DEBUGFS
+int iwl_mvm_tof_responder_cmd(struct iwl_mvm *mvm,
+			      struct ieee80211_vif *vif)
+{
+	struct iwl_tof_responder_config_cmd *cmd = &mvm->tof_data.responder_cfg;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return -EINVAL;
+
+	if (vif->p2p || vif->type != NL80211_IFTYPE_AP ||
+	    !mvmvif->ap_ibss_active) {
+		IWL_ERR(mvm, "Cannot start responder, not in AP mode\n");
+		return -EIO;
+	}
+
+	cmd->sta_id = mvmvif->bcast_sta.sta_id;
+	memcpy(cmd->bssid, vif->addr, ETH_ALEN);
+	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
+						    IWL_ALWAYS_LONG_GROUP, 0),
+				    0, sizeof(*cmd), cmd);
+}
+#endif
+
+int iwl_mvm_tof_range_request_cmd(struct iwl_mvm *mvm,
+				  struct ieee80211_vif *vif)
+{
+	struct iwl_host_cmd cmd = {
+		.id = iwl_cmd_id(TOF_CMD, IWL_ALWAYS_LONG_GROUP, 0),
+		.len = { sizeof(mvm->tof_data.range_req), },
+		/* no copy because of the command size */
+		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
+	};
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return -EINVAL;
+
+	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
+		IWL_ERR(mvm, "Cannot send range request, not STA mode\n");
+		return -EIO;
+	}
+
+	/* nesting of range requests is not supported in FW */
+	if (mvm->tof_data.active_range_request !=
+		IWL_MVM_TOF_RANGE_REQ_MAX_ID) {
+		IWL_ERR(mvm, "Cannot send range req, already active req %d\n",
+			mvm->tof_data.active_range_request);
+		return -EIO;
+	}
+
+	mvm->tof_data.active_range_request = mvm->tof_data.range_req.request_id;
+
+	cmd.data[0] = &mvm->tof_data.range_req;
+	return iwl_mvm_send_cmd(mvm, &cmd);
+}
+
+int iwl_mvm_tof_range_request_ext_cmd(struct iwl_mvm *mvm,
+				      struct ieee80211_vif *vif)
+{
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_TOF_SUPPORT))
+		return -EINVAL;
+
+	if (ieee80211_vif_type_p2p(vif) !=  NL80211_IFTYPE_STATION) {
+		IWL_ERR(mvm, "Cannot send ext range req, not in STA mode\n");
+		return -EIO;
+	}
+
+	return iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(TOF_CMD,
+						    IWL_ALWAYS_LONG_GROUP, 0),
+				    0, sizeof(mvm->tof_data.range_req_ext),
+				    &mvm->tof_data.range_req_ext);
+}
+
+static int iwl_mvm_tof_range_resp(struct iwl_mvm *mvm, void *data)
+{
+	struct iwl_tof_range_rsp_ntfy *resp = (void *)data;
+
+	if (resp->request_id != mvm->tof_data.active_range_request) {
+		IWL_ERR(mvm, "Request id mismatch, got %d, active %d\n",
+			resp->request_id, mvm->tof_data.active_range_request);
+		return -EIO;
+	}
+
+	memcpy(&mvm->tof_data.range_resp, resp,
+	       sizeof(struct iwl_tof_range_rsp_ntfy));
+	mvm->tof_data.active_range_request = IWL_MVM_TOF_RANGE_REQ_MAX_ID;
+
+	return 0;
+}
+
+static int iwl_mvm_tof_mcsi_notif(struct iwl_mvm *mvm, void *data)
+{
+	struct iwl_tof_mcsi_notif *resp = (struct iwl_tof_mcsi_notif *)data;
+
+	IWL_DEBUG_INFO(mvm, "MCSI notification, token %d\n", resp->token);
+	return 0;
+}
+
+static int iwl_mvm_tof_nb_report_notif(struct iwl_mvm *mvm, void *data)
+{
+	struct iwl_tof_neighbor_report *report =
+		(struct iwl_tof_neighbor_report *)data;
+
+	IWL_DEBUG_INFO(mvm, "NB report, bssid %pM, token %d, status 0x%x\n",
+		       report->bssid, report->request_token, report->status);
+	return 0;
+}
+
+void iwl_mvm_tof_resp_handler(struct iwl_mvm *mvm,
+			      struct iwl_rx_cmd_buffer *rxb)
+{
+	struct iwl_rx_packet *pkt = rxb_addr(rxb);
+	struct iwl_tof_gen_resp_cmd *resp = (void *)pkt->data;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	switch (le32_to_cpu(resp->sub_grp_cmd_id)) {
+	case TOF_RANGE_RESPONSE_NOTIF:
+		iwl_mvm_tof_range_resp(mvm, resp->data);
+		break;
+	case TOF_MCSI_DEBUG_NOTIF:
+		iwl_mvm_tof_mcsi_notif(mvm, resp->data);
+		break;
+	case TOF_NEIGHBOR_REPORT_RSP_NOTIF:
+		iwl_mvm_tof_nb_report_notif(mvm, resp->data);
+		break;
+	default:
+	       IWL_ERR(mvm, "Unknown sub-group command 0x%x\n",
+		       resp->sub_grp_cmd_id);
+	       break;
+	}
+}