iwlwifi: mvm: parse firmware alive message version 6

There's a new version with some addition, we'll need to
do something with the additional data later, but for now
just parse it so we don't fail with the newer firmware.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211204083238.f856cb190a4e.I77e3ff5a92b1bcc3e81c1344b046dade0a8b6a24@changeidSigned-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/alive.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2012-2014, 2018, 2020 Intel Corporation
+ * Copyright (C) 2012-2014, 2018, 2020-2021 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -97,6 +97,21 @@ struct iwl_alive_ntf_v5 {
 	struct iwl_sku_id sku_id;
 } __packed; /* UCODE_ALIVE_NTFY_API_S_VER_5 */
 
+struct iwl_imr_alive_info {
+	__le64 base_addr;
+	__le32 size;
+	__le32 enabled;
+} __packed; /* IMR_ALIVE_INFO_API_S_VER_1 */
+
+struct iwl_alive_ntf_v6 {
+	__le16 status;
+	__le16 flags;
+	struct iwl_lmac_alive lmac_data[2];
+	struct iwl_umac_alive umac_data;
+	struct iwl_sku_id sku_id;
+	struct iwl_imr_alive_info imr;
+} __packed; /* UCODE_ALIVE_NTFY_API_S_VER_6 */
+
 /**
  * enum iwl_extended_cfg_flag - commands driver may send before
  *	finishing init flow

drivers/net/wireless/intel/iwlwifi/fw/api/commands.h

@@ -51,7 +51,7 @@ enum iwl_legacy_cmds {
 	 * @UCODE_ALIVE_NTFY:
 	 * Alive data from the firmware, as described in
 	 * &struct iwl_alive_ntf_v3 or &struct iwl_alive_ntf_v4 or
-	 * &struct iwl_alive_ntf_v5.
+	 * &struct iwl_alive_ntf_v5 or &struct iwl_alive_ntf_v6.
 	 */
 	UCODE_ALIVE_NTFY = 0x1,
 

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

@@ -123,13 +123,15 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 	struct iwl_lmac_alive *lmac2 = NULL;
 	u16 status;
 	u32 lmac_error_event_table, umac_error_table;
+	u32 version = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
+					      UCODE_ALIVE_NTFY, 0);
 
 	/*
 	 * For v5 and above, we can check the version, for older
 	 * versions we need to check the size.
 	 */
-	if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
-				    UCODE_ALIVE_NTFY, 0) == 5) {
+	if (version == 5 || version == 6) {
+		/* v5 and v6 are compatible (only IMR addition) */
 		struct iwl_alive_ntf_v5 *palive;
 
 		if (pkt_len < sizeof(*palive))