i40e: add support for triggering EMPR
Allow debugfs to trigger a reset called EMPR.
Change-Id: I2f6600a8242759ec60c8198d03f70c2b774e0740
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@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/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index d60673e..5d234a1 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -4056,6 +4056,24 @@
wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
i40e_flush(&pf->hw);
+ } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
+
+ /* Request a Firmware Reset
+ *
+ * Same as Global reset, plus restarting the
+ * embedded firmware engine.
+ */
+ /* enable EMP Reset */
+ val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
+ val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
+ wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
+
+ /* force the reset */
+ val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
+ val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
+ wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
+ i40e_flush(&pf->hw);
+
} else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
/* Request a PF Reset