5 files changed, 47 insertions, 19 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
index ffb4b5cef275..17d7a05006fa 100644
--- a/drivers/net/wireless/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/debugfs.c
@@ -974,7 +974,7 @@ static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm,
 	if (ret)
 		return ret;
 
-	iwl_mvm_fw_dbg_collect(mvm, FW_DBG_TRIGGER_USER, NULL, 0, 0);
+	iwl_mvm_fw_dbg_collect(mvm, FW_DBG_TRIGGER_USER, NULL, 0, NULL);
 
 	iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE);
 
diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index e65a65337792..aff5bbf3f141 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -735,8 +735,13 @@ static void iwl_mvm_get_shared_mem_conf(struct iwl_mvm *mvm)
 
 int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
 				struct iwl_mvm_dump_desc *desc,
-				unsigned int delay)
+				struct iwl_fw_dbg_trigger_tlv *trigger)
 {
+	unsigned int delay = 0;
+
+	if (trigger)
+		delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
+
 	if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status))
 		return -EBUSY;
 
@@ -747,6 +752,7 @@ int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
 		 le32_to_cpu(desc->trig_desc.type));
 
 	mvm->fw_dump_desc = desc;
+	mvm->fw_dump_trig = trigger;
 
 	queue_delayed_work(system_wq, &mvm->fw_dump_wk, delay);
 
@@ -754,7 +760,8 @@ int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
 }
 
 int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
-			   const char *str, size_t len, unsigned int delay)
+			   const char *str, size_t len,
+			   struct iwl_fw_dbg_trigger_tlv *trigger)
 {
 	struct iwl_mvm_dump_desc *desc;
 
@@ -766,14 +773,13 @@ int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
 	desc->trig_desc.type = cpu_to_le32(trig);
 	memcpy(desc->trig_desc.data, str, len);
 
-	return iwl_mvm_fw_dbg_collect_desc(mvm, desc, delay);
+	return iwl_mvm_fw_dbg_collect_desc(mvm, desc, trigger);
 }
 
 int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
 				struct iwl_fw_dbg_trigger_tlv *trigger,
 				const char *fmt, ...)
 {
-	unsigned int delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
 	u16 occurrences = le16_to_cpu(trigger->occurrences);
 	int ret, len = 0;
 	char buf[64];
@@ -797,8 +803,9 @@ int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
 		len = strlen(buf) + 1;
 	}
 
-	ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), buf,
-				     len, delay);
+	ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), buf, len,
+				     trigger);
+
 	if (ret)
 		return ret;
 
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index 9e641847c047..08dd67435189 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -1124,9 +1124,14 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 	u32 file_len, fifo_data_len = 0;
 	u32 smem_len = mvm->cfg->smem_len;
 	u32 sram2_len = mvm->cfg->dccm2_len;
+	bool monitor_dump_only = false;
 
 	lockdep_assert_held(&mvm->mutex);
 
+	if (mvm->fw_dump_trig &&
+	    mvm->fw_dump_trig->mode & IWL_FW_DBG_TRIGGER_MONITOR_ONLY)
+		monitor_dump_only = true;
+
 	fw_error_dump = kzalloc(sizeof(*fw_error_dump), GFP_KERNEL);
 	if (!fw_error_dump)
 		return;
@@ -1178,6 +1183,20 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 		   fifo_data_len +
 		   sizeof(*dump_info);
 
+	/* Make room for the SMEM, if it exists */
+	if (smem_len)
+		file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
+
+	/* Make room for the secondary SRAM, if it exists */
+	if (sram2_len)
+		file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
+
+	/* If we only want a monitor dump, reset the file length */
+	if (monitor_dump_only) {
+		file_len = sizeof(*dump_file) + sizeof(*dump_data) +
+			   sizeof(*dump_info);
+	}
+
 	/*
 	 * In 8000 HW family B-step include the ICCM (which resides separately)
 	 */
@@ -1190,14 +1209,6 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 		file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
 			    mvm->fw_dump_desc->len;
 
-	/* Make room for the SMEM, if it exists */
-	if (smem_len)
-		file_len += sizeof(*dump_data) + sizeof(*dump_mem) + smem_len;
-
-	/* Make room for the secondary SRAM, if it exists */
-	if (sram2_len)
-		file_len += sizeof(*dump_data) + sizeof(*dump_mem) + sram2_len;
-
 	dump_file = vzalloc(file_len);
 	if (!dump_file) {
 		kfree(fw_error_dump);
@@ -1243,6 +1254,10 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 		dump_data = iwl_fw_error_next_data(dump_data);
 	}
 
+	/* In case we only want monitor dump, skip to dump trasport data */
+	if (monitor_dump_only)
+		goto dump_trans_data;
+
 	dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_MEM);
 	dump_data->len = cpu_to_le32(sram_len + sizeof(*dump_mem));
 	dump_mem = (void *)dump_data->data;
@@ -1286,7 +1301,9 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 					 dump_mem->data, IWL8260_ICCM_LEN);
 	}
 
-	fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans);
+dump_trans_data:
+	fw_error_dump->trans_ptr = iwl_trans_dump_data(mvm->trans,
+						       mvm->fw_dump_trig);
 	fw_error_dump->op_mode_len = file_len;
 	if (fw_error_dump->trans_ptr)
 		file_len += fw_error_dump->trans_ptr->len;
@@ -1295,6 +1312,7 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
 	dev_coredumpm(mvm->trans->dev, THIS_MODULE, fw_error_dump, 0,
 		      GFP_KERNEL, iwl_mvm_read_coredump, iwl_mvm_free_coredump);
 
+	mvm->fw_dump_trig = NULL;
 	clear_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status);
 }
 
diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h
index fdf401b696a4..2b2e2996ccb9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mvm.h
+++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h
@@ -708,6 +708,7 @@ struct iwl_mvm {
 	u8 fw_dbg_conf;
 	struct delayed_work fw_dump_wk;
 	struct iwl_mvm_dump_desc *fw_dump_desc;
+	struct iwl_fw_dbg_trigger_tlv *fw_dump_trig;
 
 #ifdef CONFIG_IWLWIFI_LEDS
 	struct led_classdev led;
@@ -1443,10 +1444,11 @@ void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm);
 
 int iwl_mvm_start_fw_dbg_conf(struct iwl_mvm *mvm, u8 id);
 int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
-			   const char *str, size_t len, unsigned int delay);
+			   const char *str, size_t len,
+			   struct iwl_fw_dbg_trigger_tlv *trigger);
 int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
 				struct iwl_mvm_dump_desc *desc,
-				unsigned int delay);
+				struct iwl_fw_dbg_trigger_tlv *trigger);
 void iwl_mvm_free_fw_dump_desc(struct iwl_mvm *mvm);
 int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
 				struct iwl_fw_dbg_trigger_tlv *trigger,
diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c
index ef09a05b6ddb..48731124afe1 100644
--- a/drivers/net/wireless/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/iwlwifi/mvm/ops.c
@@ -914,7 +914,8 @@ void iwl_mvm_nic_restart(struct iwl_mvm *mvm, bool fw_error)
 	 * can't recover this since we're already half suspended.
 	 */
 	if (!mvm->restart_fw && fw_error) {
-		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert, 0);
+		iwl_mvm_fw_dbg_collect_desc(mvm, &iwl_mvm_dump_desc_assert,
+					    NULL);
 	} else if (test_and_set_bit(IWL_MVM_STATUS_IN_HW_RESTART,
 				    &mvm->status)) {
 		struct iwl_mvm_reprobe *reprobe;