1 files changed, 90 insertions, 49 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
index 14ac7153a3e7..39c8332be3ac 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
@@ -818,7 +818,8 @@ static void iwl_dump_paging(struct iwl_fw_runtime *fwrt,
 
 static struct iwl_fw_error_dump_file *
 iwl_fw_error_dump_file(struct iwl_fw_runtime *fwrt,
-		       struct iwl_fw_dump_ptrs *fw_error_dump)
+		       struct iwl_fw_dump_ptrs *fw_error_dump,
+		       struct iwl_fwrt_dump_data *data)
 {
 	struct iwl_fw_error_dump_file *dump_file;
 	struct iwl_fw_error_dump_data *dump_data;
@@ -900,15 +901,15 @@ iwl_fw_error_dump_file(struct iwl_fw_runtime *fwrt,
 	}
 
 	/* If we only want a monitor dump, reset the file length */
-	if (fwrt->dump.monitor_only) {
+	if (data->monitor_only) {
 		file_len = sizeof(*dump_file) + sizeof(*dump_data) * 2 +
 			   sizeof(*dump_info) + sizeof(*dump_smem_cfg);
 	}
 
 	if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_ERROR_INFO) &&
-	    fwrt->dump.desc)
+	    data->desc)
 		file_len += sizeof(*dump_data) + sizeof(*dump_trig) +
-			    fwrt->dump.desc->len;
+			data->desc->len;
 
 	dump_file = vzalloc(file_len);
 	if (!dump_file)
@@ -984,19 +985,19 @@ iwl_fw_error_dump_file(struct iwl_fw_runtime *fwrt,
 		iwl_read_radio_regs(fwrt, &dump_data);
 
 	if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_ERROR_INFO) &&
-	    fwrt->dump.desc) {
+	    data->desc) {
 		dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_ERROR_INFO);
 		dump_data->len = cpu_to_le32(sizeof(*dump_trig) +
-					     fwrt->dump.desc->len);
+					     data->desc->len);
 		dump_trig = (void *)dump_data->data;
-		memcpy(dump_trig, &fwrt->dump.desc->trig_desc,
-		       sizeof(*dump_trig) + fwrt->dump.desc->len);
+		memcpy(dump_trig, &data->desc->trig_desc,
+		       sizeof(*dump_trig) + data->desc->len);
 
 		dump_data = iwl_fw_error_next_data(dump_data);
 	}
 
 	/* In case we only want monitor dump, skip to dump trasport data */
-	if (fwrt->dump.monitor_only)
+	if (data->monitor_only)
 		goto out;
 
 	if (iwl_fw_dbg_type_on(fwrt, IWL_FW_ERROR_DUMP_MEM)) {
@@ -2172,7 +2173,21 @@ static u32 iwl_dump_ini_file_gen(struct iwl_fw_runtime *fwrt,
 	return le32_to_cpu(hdr->file_len);
 }
 
-static void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt)
+static inline void iwl_fw_free_dump_desc(struct iwl_fw_runtime *fwrt,
+					 const struct iwl_fw_dump_desc **desc)
+{
+	if (desc && *desc != &iwl_dump_desc_assert)
+		kfree(*desc);
+
+	*desc = NULL;
+	fwrt->dump.lmac_err_id[0] = 0;
+	if (fwrt->smem_cfg.num_lmacs > 1)
+		fwrt->dump.lmac_err_id[1] = 0;
+	fwrt->dump.umac_err_id = 0;
+}
+
+static void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt,
+			      struct iwl_fwrt_dump_data *dump_data)
 {
 	struct iwl_fw_dump_ptrs fw_error_dump = {};
 	struct iwl_fw_error_dump_file *dump_file;
@@ -2180,11 +2195,11 @@ static void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt)
 	u32 file_len;
 	u32 dump_mask = fwrt->fw->dbg.dump_mask;
 
-	dump_file = iwl_fw_error_dump_file(fwrt, &fw_error_dump);
+	dump_file = iwl_fw_error_dump_file(fwrt, &fw_error_dump, dump_data);
 	if (!dump_file)
-		goto out;
+		return;
 
-	if (fwrt->dump.monitor_only)
+	if (dump_data->monitor_only)
 		dump_mask &= IWL_FW_ERROR_DUMP_FW_MONITOR;
 
 	fw_error_dump.trans_ptr = iwl_trans_dump_data(fwrt->trans, dump_mask);
@@ -2213,9 +2228,6 @@ static void iwl_fw_error_dump(struct iwl_fw_runtime *fwrt)
 	}
 	vfree(fw_error_dump.fwrt_ptr);
 	vfree(fw_error_dump.trans_ptr);
-
-out:
-	iwl_fw_free_dump_desc(fwrt);
 }
 
 static void iwl_dump_ini_list_free(struct list_head *list)
@@ -2244,7 +2256,7 @@ static void iwl_fw_error_ini_dump(struct iwl_fw_runtime *fwrt,
 	u32 file_len = iwl_dump_ini_file_gen(fwrt, dump_data, &dump_list);
 
 	if (!file_len)
-		goto out;
+		return;
 
 	sg_dump_data = alloc_sgtable(file_len);
 	if (sg_dump_data) {
@@ -2261,9 +2273,6 @@ static void iwl_fw_error_ini_dump(struct iwl_fw_runtime *fwrt,
 			       GFP_KERNEL);
 	}
 	iwl_dump_ini_list_free(&dump_list);
-
-out:
-	iwl_fw_error_dump_data_free(dump_data);
 }
 
 const struct iwl_fw_dump_desc iwl_dump_desc_assert = {
@@ -2278,27 +2287,40 @@ int iwl_fw_dbg_collect_desc(struct iwl_fw_runtime *fwrt,
 			    bool monitor_only,
 			    unsigned int delay)
 {
+	struct iwl_fwrt_wk_data *wk_data;
+	unsigned long idx;
+
 	if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
-		iwl_fw_free_dump_desc(fwrt);
+		iwl_fw_free_dump_desc(fwrt, &desc);
 		return 0;
 	}
 
-	/* use wks[0] since dump flow prior to ini does not need to support
-	 * consecutive triggers collection
+	/*
+	 * Check there is an available worker.
+	 * ffz return value is undefined if no zero exists,
+	 * so check against ~0UL first.
 	 */
-	if (test_and_set_bit(fwrt->dump.wks[0].idx, &fwrt->dump.active_wks))
+	if (fwrt->dump.active_wks == ~0UL)
+		return -EBUSY;
+
+	idx = ffz(fwrt->dump.active_wks);
+
+	if (idx >= IWL_FW_RUNTIME_DUMP_WK_NUM ||
+	    test_and_set_bit(fwrt->dump.wks[idx].idx, &fwrt->dump.active_wks))
 		return -EBUSY;
 
-	if (WARN_ON(fwrt->dump.desc))
-		iwl_fw_free_dump_desc(fwrt);
+	wk_data = &fwrt->dump.wks[idx];
+
+	if (WARN_ON(wk_data->dump_data.desc))
+		iwl_fw_free_dump_desc(fwrt, &wk_data->dump_data.desc);
+
+	wk_data->dump_data.desc = desc;
+	wk_data->dump_data.monitor_only = monitor_only;
 
 	IWL_WARN(fwrt, "Collecting data: trigger %d fired.\n",
 		 le32_to_cpu(desc->trig_desc.type));
 
-	fwrt->dump.desc = desc;
-	fwrt->dump.monitor_only = monitor_only;
-
-	schedule_delayed_work(&fwrt->dump.wks[0].wk, usecs_to_jiffies(delay));
+	schedule_delayed_work(&wk_data->wk, usecs_to_jiffies(delay));
 
 	return 0;
 }
@@ -2307,26 +2329,40 @@ IWL_EXPORT_SYMBOL(iwl_fw_dbg_collect_desc);
 int iwl_fw_dbg_error_collect(struct iwl_fw_runtime *fwrt,
 			     enum iwl_fw_dbg_trigger trig_type)
 {
-	int ret;
-	struct iwl_fw_dump_desc *iwl_dump_error_desc;
-
 	if (!test_bit(STATUS_DEVICE_ENABLED, &fwrt->trans->status))
 		return -EIO;
 
-	iwl_dump_error_desc = kmalloc(sizeof(*iwl_dump_error_desc), GFP_KERNEL);
-	if (!iwl_dump_error_desc)
-		return -ENOMEM;
+	if (iwl_trans_dbg_ini_valid(fwrt->trans)) {
+		if (trig_type != FW_DBG_TRIGGER_ALIVE_TIMEOUT)
+			return -EIO;
 
-	iwl_dump_error_desc->trig_desc.type = cpu_to_le32(trig_type);
-	iwl_dump_error_desc->len = 0;
+		iwl_dbg_tlv_time_point(fwrt,
+				       IWL_FW_INI_TIME_POINT_HOST_ALIVE_TIMEOUT,
+				       NULL);
+	} else {
+		struct iwl_fw_dump_desc *iwl_dump_error_desc;
+		int ret;
 
-	ret = iwl_fw_dbg_collect_desc(fwrt, iwl_dump_error_desc, false, 0);
-	if (ret)
-		kfree(iwl_dump_error_desc);
-	else
-		iwl_trans_sync_nmi(fwrt->trans);
+		iwl_dump_error_desc =
+			kmalloc(sizeof(*iwl_dump_error_desc), GFP_KERNEL);
 
-	return ret;
+		if (!iwl_dump_error_desc)
+			return -ENOMEM;
+
+		iwl_dump_error_desc->trig_desc.type = cpu_to_le32(trig_type);
+		iwl_dump_error_desc->len = 0;
+
+		ret = iwl_fw_dbg_collect_desc(fwrt, iwl_dump_error_desc,
+					      false, 0);
+		if (ret) {
+			kfree(iwl_dump_error_desc);
+			return ret;
+		}
+	}
+
+	iwl_trans_sync_nmi(fwrt->trans);
+
+	return 0;
 }
 IWL_EXPORT_SYMBOL(iwl_fw_dbg_error_collect);
 
@@ -2504,14 +2540,14 @@ IWL_EXPORT_SYMBOL(iwl_fw_start_dbg_conf);
 static void iwl_fw_dbg_collect_sync(struct iwl_fw_runtime *fwrt, u8 wk_idx)
 {
 	struct iwl_fw_dbg_params params = {0};
+	struct iwl_fwrt_dump_data *dump_data =
+		&fwrt->dump.wks[wk_idx].dump_data;
 
 	if (!test_bit(wk_idx, &fwrt->dump.active_wks))
 		return;
 
-	if (fwrt->ops && fwrt->ops->fw_running &&
-	    !fwrt->ops->fw_running(fwrt->ops_ctx)) {
-		IWL_ERR(fwrt, "Firmware not running - cannot dump error\n");
-		iwl_fw_free_dump_desc(fwrt);
+	if (!test_bit(STATUS_DEVICE_ENABLED, &fwrt->trans->status)) {
+		IWL_ERR(fwrt, "Device is not enabled - cannot dump error\n");
 		goto out;
 	}
 
@@ -2527,12 +2563,17 @@ static void iwl_fw_dbg_collect_sync(struct iwl_fw_runtime *fwrt, u8 wk_idx)
 	if (iwl_trans_dbg_ini_valid(fwrt->trans))
 		iwl_fw_error_ini_dump(fwrt, &fwrt->dump.wks[wk_idx].dump_data);
 	else
-		iwl_fw_error_dump(fwrt);
+		iwl_fw_error_dump(fwrt, &fwrt->dump.wks[wk_idx].dump_data);
 	IWL_DEBUG_FW_INFO(fwrt, "WRT: Data collection done\n");
 
 	iwl_fw_dbg_stop_restart_recording(fwrt, &params, false);
 
 out:
+	if (iwl_trans_dbg_ini_valid(fwrt->trans))
+		iwl_fw_error_dump_data_free(dump_data);
+	else
+		iwl_fw_free_dump_desc(fwrt, &dump_data->desc);
+
 	clear_bit(wk_idx, &fwrt->dump.active_wks);
 }