From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next v2 15/15] i40e: trigger SW INT with no ITR wait Date: Thu, 20 Nov 2014 15:09:13 -0800 Message-ID: <1416524953-15161-16-git-send-email-jeffrey.t.kirsher@intel.com> References: <1416524953-15161-1-git-send-email-jeffrey.t.kirsher@intel.com> Cc: Shannon Nelson , netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, jogreene@redhat.com, Jeff Kirsher To: davem@davemloft.net Return-path: Received: from mga14.intel.com ([192.55.52.115]:10076 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757669AbaKTXJZ (ORCPT ); Thu, 20 Nov 2014 18:09:25 -0500 In-Reply-To: <1416524953-15161-1-git-send-email-jeffrey.t.kirsher@intel.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Shannon Nelson Since we want the SW INT to go off as soon as possible, write the extra bits that will turn off the ITR wait for the interrupt. Change-ID: I6d5382ba60840fa32abb7dea17c839eb4b5f68f7 Signed-off-by: Shannon Nelson Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_ethtool.c | 5 ++++- drivers/net/ethernet/intel/i40e/i40e_main.c | 10 ++++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c index bb1698a..b2402851 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_ethtool.c +++ b/drivers/net/ethernet/intel/i40e/i40e_ethtool.c @@ -1400,7 +1400,10 @@ static int i40e_intr_test(struct net_device *netdev, u64 *data) netif_info(pf, hw, netdev, "interrupt test\n"); wr32(&pf->hw, I40E_PFINT_DYN_CTL0, (I40E_PFINT_DYN_CTL0_INTENA_MASK | - I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK)); + I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK | + I40E_PFINT_DYN_CTL0_ITR_INDX_MASK | + I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK | + I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK)); usleep_range(1000, 2000); *data = (swc_old == pf->sw_int_count); diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index 3ebab03..3913329 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -5565,11 +5565,17 @@ static void i40e_check_hang_subtask(struct i40e_pf *pf) if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) { wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0, (I40E_PFINT_DYN_CTL0_INTENA_MASK | - I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK)); + I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK | + I40E_PFINT_DYN_CTL0_ITR_INDX_MASK | + I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK | + I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK)); } else { u16 vec = vsi->base_vector - 1; u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK | - I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK); + I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK | + I40E_PFINT_DYN_CTLN_ITR_INDX_MASK | + I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK | + I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK); for (i = 0; i < vsi->num_q_vectors; i++, vec++) wr32(&vsi->back->hw, I40E_PFINT_DYN_CTLN(vec), val); -- 1.9.3