From patchwork Thu Jul 31 00:32:07 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Brown, Aaron F" X-Patchwork-Id: 375089 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 851A4140174 for ; Thu, 31 Jul 2014 10:28:38 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932095AbaGaA20 (ORCPT ); Wed, 30 Jul 2014 20:28:26 -0400 Received: from mga14.intel.com ([192.55.52.115]:24424 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756061AbaGaA2V (ORCPT ); Wed, 30 Jul 2014 20:28:21 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 30 Jul 2014 17:21:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,768,1400050800"; d="scan'208";a="569713927" Received: from unknown (HELO s252.jf.intel.com) ([10.166.34.165]) by fmsmga001.fm.intel.com with ESMTP; 30 Jul 2014 17:28:18 -0700 From: Aaron Brown To: davem@davemloft.net Cc: Ashish Shah , netdev@vger.kernel.org, gospo@redhat.com, sassmann@redhat.com, Aaron Brown Subject: [net-next 11/15] i40evf: future-proof vfr_stat state check Date: Wed, 30 Jul 2014 17:32:07 -0700 Message-Id: <1406766731-4209-12-git-send-email-aaron.f.brown@intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1406766731-4209-1-git-send-email-aaron.f.brown@intel.com> References: <1406766731-4209-1-git-send-email-aaron.f.brown@intel.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ashish Shah Previously defined state I40E_VFR_VFACTIVE uses bit 1 which is now set to "reserved." Update the state checks to also include I40E_VFR_COMPLETED. This change will allow the VF to work with both existing and future PFs. Change-ID: Ifd1d34f79f3b0ffd6d2550ee4dadc55825ff52f8 Signed-off-by: Ashish Shah Tested-by: Sibai Li Signed-off-by: Aaron Brown --- drivers/net/ethernet/intel/i40evf/i40evf_main.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_main.c b/drivers/net/ethernet/intel/i40evf/i40evf_main.c index 937785d..4c01079 100644 --- a/drivers/net/ethernet/intel/i40evf/i40evf_main.c +++ b/drivers/net/ethernet/intel/i40evf/i40evf_main.c @@ -1298,12 +1298,16 @@ static void i40evf_watchdog_task(struct work_struct *work) struct i40evf_adapter, watchdog_task); struct i40e_hw *hw = &adapter->hw; + uint32_t rstat_val; if (test_and_set_bit(__I40EVF_IN_CRITICAL_TASK, &adapter->crit_section)) goto restart_watchdog; if (adapter->flags & I40EVF_FLAG_PF_COMMS_FAILED) { - if ((rd32(hw, I40E_VFGEN_RSTAT) & 0x3) == I40E_VFR_VFACTIVE) { + rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & + I40E_VFGEN_RSTAT_VFR_STATE_MASK; + if ((rstat_val == I40E_VFR_VFACTIVE) || + (rstat_val == I40E_VFR_COMPLETED)) { /* A chance for redemption! */ dev_err(&adapter->pdev->dev, "Hardware came out of reset. Attempting reinit.\n"); adapter->state = __I40EVF_STARTUP; @@ -1329,8 +1333,11 @@ static void i40evf_watchdog_task(struct work_struct *work) goto watchdog_done; /* check for reset */ + rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & + I40E_VFGEN_RSTAT_VFR_STATE_MASK; if (!(adapter->flags & I40EVF_FLAG_RESET_PENDING) && - (rd32(hw, I40E_VFGEN_RSTAT) & 0x3) != I40E_VFR_VFACTIVE) { + (rstat_val != I40E_VFR_VFACTIVE) && + (rstat_val != I40E_VFR_COMPLETED)) { adapter->state = __I40EVF_RESETTING; adapter->flags |= I40EVF_FLAG_RESET_PENDING; dev_err(&adapter->pdev->dev, "Hardware reset detected\n"); @@ -1496,7 +1503,8 @@ static void i40evf_reset_task(struct work_struct *work) for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if (rstat_val != I40E_VFR_VFACTIVE) + if ((rstat_val != I40E_VFR_VFACTIVE) && + (rstat_val != I40E_VFR_COMPLETED)) break; else msleep(I40EVF_RESET_WAIT_MS); @@ -1510,7 +1518,8 @@ static void i40evf_reset_task(struct work_struct *work) for (i = 0; i < I40EVF_RESET_WAIT_COUNT; i++) { rstat_val = rd32(hw, I40E_VFGEN_RSTAT) & I40E_VFGEN_RSTAT_VFR_STATE_MASK; - if (rstat_val == I40E_VFR_VFACTIVE) + if ((rstat_val == I40E_VFR_VFACTIVE) || + (rstat_val == I40E_VFR_COMPLETED)) break; else msleep(I40EVF_RESET_WAIT_MS); @@ -1947,8 +1956,10 @@ static int i40evf_check_reset_complete(struct i40e_hw *hw) int i; for (i = 0; i < 100; i++) { - rstat = rd32(hw, I40E_VFGEN_RSTAT); - if (rstat == I40E_VFR_VFACTIVE) + rstat = rd32(hw, I40E_VFGEN_RSTAT) & + I40E_VFGEN_RSTAT_VFR_STATE_MASK; + if ((rstat == I40E_VFR_VFACTIVE) || + (rstat == I40E_VFR_COMPLETED)) return 0; udelay(10); }