From patchwork Fri Oct 30 05:27:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cunming Liang X-Patchwork-Id: 8312 Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id ABF848E70; Fri, 30 Oct 2015 06:28:19 +0100 (CET) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id C9C0B8DED for ; Fri, 30 Oct 2015 06:28:13 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP; 29 Oct 2015 22:28:14 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,217,1444719600"; d="scan'208";a="674833202" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga003.jf.intel.com with ESMTP; 29 Oct 2015 22:28:13 -0700 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t9U5S67R023322; Fri, 30 Oct 2015 13:28:06 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t9U5S3oV028884; Fri, 30 Oct 2015 13:28:05 +0800 Received: (from cliang18@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t9U5S3XT028880; Fri, 30 Oct 2015 13:28:03 +0800 From: Cunming Liang To: dev@dpdk.org Date: Fri, 30 Oct 2015 13:27:45 +0800 Message-Id: <1446182873-28814-4-git-send-email-cunming.liang@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1446182873-28814-1-git-send-email-cunming.liang@intel.com> References: <1443072831-19065-1-git-send-email-cunming.liang@intel.com> <1446182873-28814-1-git-send-email-cunming.liang@intel.com> Subject: [dpdk-dev] [PATCH v2 03/11] igb: reserve intr vector zero for misc cause X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" According to the VFIO interrupt mapping, the interrupt vector id for rxq starts from RX_VEC_START. It doesn't impact the UIO cases. Signed-off-by: Cunming Liang --- drivers/net/e1000/igb_ethdev.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c index 3ab082e..b3a802f 100644 --- a/drivers/net/e1000/igb_ethdev.c +++ b/drivers/net/e1000/igb_ethdev.c @@ -4213,7 +4213,10 @@ eth_igb_configure_msix_intr(struct rte_eth_dev *dev) uint32_t tmpval, regval, intr_mask; struct e1000_hw *hw = E1000_DEV_PRIVATE_TO_HW(dev->data->dev_private); - uint32_t vec = 0; + uint32_t vec = MISC_VEC_ID; + uint32_t base = MISC_VEC_ID; + uint32_t misc_shift = 0; + struct rte_intr_handle *intr_handle = &dev->pci_dev->intr_handle; /* won't configure msix register if no mapping is done @@ -4222,6 +4225,11 @@ eth_igb_configure_msix_intr(struct rte_eth_dev *dev) if (!rte_intr_dp_is_en(intr_handle)) return; + if (rte_intr_allow_others(intr_handle)) { + vec = base = RX_VEC_START; + misc_shift = 1; + } + /* set interrupt vector for other causes */ if (hw->mac.type == e1000_82575) { tmpval = E1000_READ_REG(hw, E1000_CTRL_EXT); @@ -4250,8 +4258,8 @@ eth_igb_configure_msix_intr(struct rte_eth_dev *dev) E1000_WRITE_REG(hw, E1000_GPIE, E1000_GPIE_MSIX_MODE | E1000_GPIE_PBA | E1000_GPIE_EIAME | E1000_GPIE_NSICR); - - intr_mask = (1 << intr_handle->max_intr) - 1; + intr_mask = RTE_LEN2MASK(intr_handle->nb_efd, uint32_t) << + misc_shift; regval = E1000_READ_REG(hw, E1000_EIAC); E1000_WRITE_REG(hw, E1000_EIAC, regval | intr_mask); @@ -4265,14 +4273,15 @@ eth_igb_configure_msix_intr(struct rte_eth_dev *dev) /* use EIAM to auto-mask when MSI-X interrupt * is asserted, this saves a register write for every interrupt */ - intr_mask = (1 << intr_handle->nb_efd) - 1; + intr_mask = RTE_LEN2MASK(intr_handle->nb_efd, uint32_t) << + misc_shift; regval = E1000_READ_REG(hw, E1000_EIAM); E1000_WRITE_REG(hw, E1000_EIAM, regval | intr_mask); for (queue_id = 0; queue_id < dev->data->nb_rx_queues; queue_id++) { eth_igb_assign_msix_vector(hw, 0, queue_id, vec); intr_handle->intr_vec[queue_id] = vec; - if (vec < intr_handle->nb_efd - 1) + if (vec < base + intr_handle->nb_efd - 1) vec++; }