i40e/i40evf: add tracking to NVM busy state
The NVM updates take some time and are asynchronous actions that signal
their completion with an AdminQ event. This code tracks when there is
an NVM update outstanding and won't allow a new update command until a
completion event is received from the current update.
Change-ID: Ic132fe16bd9dc09b002ed38297a877c1a01553ce
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Mitch Williams <mitch.a.williams@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
index 5470ce9..c79df25 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_adminq.c
@@ -28,6 +28,16 @@
#include "i40e_prototype.h"
/**
+ * i40e_is_nvm_update_op - return true if this is an NVM update operation
+ * @desc: API request descriptor
+ **/
+static inline bool i40e_is_nvm_update_op(struct i40e_aq_desc *desc)
+{
+ return (desc->opcode == i40e_aqc_opc_nvm_erase) ||
+ (desc->opcode == i40e_aqc_opc_nvm_update);
+}
+
+/**
* i40e_adminq_init_regs - Initialize AdminQ registers
* @hw: pointer to the hardware structure
*
@@ -659,6 +669,12 @@
goto asq_send_command_exit;
}
+ if (i40e_is_nvm_update_op(desc) && hw->aq.nvm_busy) {
+ i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: NVM busy.\n");
+ status = I40E_ERR_NVM;
+ goto asq_send_command_exit;
+ }
+
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
*details = *cmd_details;
@@ -786,6 +802,9 @@
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
+ if (i40e_is_nvm_update_op(desc))
+ hw->aq.nvm_busy = true;
+
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
@@ -880,6 +899,9 @@
e->msg_size);
}
+ if (i40e_is_nvm_update_op(&e->desc))
+ hw->aq.nvm_busy = false;
+
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size