i40e: enable user dump of internal hardware state
This is a feature to enable better debugging of user reported issues by
allowing a bash script to acquire information about the internal hardware
state. The data output to the kernel log is collected by the script and can
then be sent to Intel. This is a critical debugging feature for helping us
interpret and reproduce complex customer setups.
Change-ID: Ie8b3ab09086d6870a709015f51ada05af10b41bb
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_common.c b/drivers/net/ethernet/intel/i40e/i40e_common.c
index 44dc4b1..ce522d7 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_common.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_common.c
@@ -3506,6 +3506,63 @@
}
/**
+ * i40e_aq_debug_dump
+ * @hw: pointer to the hardware structure
+ * @cluster_id: specific cluster to dump
+ * @table_id: table id within cluster
+ * @start_index: index of line in the block to read
+ * @buff_size: dump buffer size
+ * @buff: dump buffer
+ * @ret_buff_size: actual buffer size returned
+ * @ret_next_table: next block to read
+ * @ret_next_index: next index to read
+ *
+ * Dump internal FW/HW data for debug purposes.
+ *
+ **/
+i40e_status i40e_aq_debug_dump(struct i40e_hw *hw, u8 cluster_id,
+ u8 table_id, u32 start_index, u16 buff_size,
+ void *buff, u16 *ret_buff_size,
+ u8 *ret_next_table, u32 *ret_next_index,
+ struct i40e_asq_cmd_details *cmd_details)
+{
+ struct i40e_aq_desc desc;
+ struct i40e_aqc_debug_dump_internals *cmd =
+ (struct i40e_aqc_debug_dump_internals *)&desc.params.raw;
+ struct i40e_aqc_debug_dump_internals *resp =
+ (struct i40e_aqc_debug_dump_internals *)&desc.params.raw;
+ i40e_status status;
+
+ if (buff_size == 0 || !buff)
+ return I40E_ERR_PARAM;
+
+ i40e_fill_default_direct_cmd_desc(&desc,
+ i40e_aqc_opc_debug_dump_internals);
+ /* Indirect Command */
+ desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_BUF);
+ if (buff_size > I40E_AQ_LARGE_BUF)
+ desc.flags |= cpu_to_le16((u16)I40E_AQ_FLAG_LB);
+
+ cmd->cluster_id = cluster_id;
+ cmd->table_id = table_id;
+ cmd->idx = cpu_to_le32(start_index);
+
+ desc.datalen = cpu_to_le16(buff_size);
+
+ status = i40e_asq_send_command(hw, &desc, buff, buff_size, cmd_details);
+ if (!status) {
+ if (ret_buff_size)
+ *ret_buff_size = le16_to_cpu(desc.datalen);
+ if (ret_next_table)
+ *ret_next_table = resp->table_id;
+ if (ret_next_index)
+ *ret_next_index = le32_to_cpu(resp->idx);
+ }
+
+ return status;
+}
+
+/**
* i40e_read_bw_from_alt_ram
* @hw: pointer to the hardware structure
* @max_bw: pointer for max_bw read