iwlwifi: mvm: add the cause of the firmware dump in the dump

Now that the firmware dump can be triggered by events in
the code and not only the user or an firmware ASSERT, we
need a way to know why the firmware dump was triggered.
Add a section in the dump file for that.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

1 files changed, 30 insertions, 5 deletions

diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c
index 8d684d5da964..64e9039254b9 100644
--- a/drivers/net/wireless/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/iwlwifi/mvm/fw.c
@@ -479,13 +479,20 @@ exit:
 	iwl_free_resp(&cmd);
 }
 
-int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
-			   unsigned int delay)
+int iwl_mvm_fw_dbg_collect_desc(struct iwl_mvm *mvm,
+				struct iwl_mvm_dump_desc *desc,
+				unsigned int delay)
 {
 	if (test_and_set_bit(IWL_MVM_STATUS_DUMPING_FW_LOG, &mvm->status))
 		return -EBUSY;
 
-	IWL_WARN(mvm, "Collecting data: trigger %d fired.\n", trig);
+	if (WARN_ON(mvm->fw_dump_desc))
+		iwl_mvm_free_fw_dump_desc(mvm);
+
+	IWL_WARN(mvm, "Collecting data: trigger %d fired.\n",
+		 le32_to_cpu(desc->trig_desc.type));
+
+	mvm->fw_dump_desc = desc;
 
 	/* stop recording */
 	if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) {
@@ -501,8 +508,25 @@ int iwl_mvm_fw_dbg_collect(struct iwl_mvm *mvm, enum iwl_fw_dbg_trigger trig,
 	return 0;
 }
 
+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)
+{
+	struct iwl_mvm_dump_desc *desc;
+
+	desc = kzalloc(sizeof(*desc) + len, GFP_ATOMIC);
+	if (!desc)
+		return -ENOMEM;
+
+	desc->len = len;
+	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);
+}
+
 int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
-				struct iwl_fw_dbg_trigger_tlv *trigger)
+				struct iwl_fw_dbg_trigger_tlv *trigger,
+				const char *str, size_t len)
 {
 	unsigned int delay = msecs_to_jiffies(le32_to_cpu(trigger->stop_delay));
 	u16 occurrences = le16_to_cpu(trigger->occurrences);
@@ -511,7 +535,8 @@ int iwl_mvm_fw_dbg_collect_trig(struct iwl_mvm *mvm,
 	if (!occurrences)
 		return 0;
 
-	ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), delay);
+	ret = iwl_mvm_fw_dbg_collect(mvm, le32_to_cpu(trigger->id), str,
+				     len, delay);
 	if (ret)
 		return ret;