From 5053a451109e08d62d9086c1427c55c0411c9c3e Mon Sep 17 00:00:00 2001
From: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Date: Fri, 4 Mar 2022 13:21:21 +0200
Subject: [PATCH] iwlwifi: yoyo: disable IMR DRAM region if IMR is disabled
Git-commit: 5053a451109e08d62d9086c1427c55c0411c9c3e
Patch-mainline: v5.18-rc1
References: bsc#1202131

Disable IMR region if it is enabled in the TLVs,
but disabled at runtime by the FW.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220304131517.2a696656a161.I99705472a8838121ffaca72977015dc2069549b9@changeid
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 23 +++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
index a178b83ee8a2..f4de8250696f 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -124,6 +124,7 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 	u32 lmac_error_event_table, umac_error_table;
 	u32 version = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
 					      UCODE_ALIVE_NTFY, 0);
+	u32 i;
 
 	if (version == 6) {
 		struct iwl_alive_ntf_v6 *palive;
@@ -146,6 +147,28 @@ static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
 			     mvm->trans->dbg.imr_data.imr_enable,
 			     mvm->trans->dbg.imr_data.imr_size,
 			     le64_to_cpu(mvm->trans->dbg.imr_data.imr_base_addr));
+
+		if (!mvm->trans->dbg.imr_data.imr_enable) {
+			for (i = 0; i < ARRAY_SIZE(mvm->trans->dbg.active_regions); i++) {
+				struct iwl_ucode_tlv *reg_tlv;
+				struct iwl_fw_ini_region_tlv *reg;
+
+				reg_tlv = mvm->trans->dbg.active_regions[i];
+				if (!reg_tlv)
+					continue;
+
+				reg = (void *)reg_tlv->data;
+				/*
+				 * We have only one DRAM IMR region, so we
+				 * can break as soon as we find the first
+				 * one.
+				 */
+				if (reg->type == IWL_FW_INI_REGION_DRAM_IMR) {
+					mvm->trans->dbg.unsupported_region_msk |= BIT(i);
+					break;
+				}
+			}
+		}
 	}
 
 	if (version >= 5) {
-- 
2.35.3