From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from proxy.6wind.com (host.76.145.23.62.rev.coltfrance.com [62.23.145.76]) by dpdk.org (Postfix) with ESMTP id 8221E3979 for ; Thu, 21 Jul 2016 10:08:49 +0200 (CEST) Received: from glumotte.dev.6wind.com (unknown [10.16.0.195]) by proxy.6wind.com (Postfix) with ESMTP id 0642824984; Thu, 21 Jul 2016 10:08:49 +0200 (CEST) From: Olivier Matz To: dev@dpdk.org, yuanhan.liu@linux.intel.com, konstantin.ananyev@intel.com Cc: sugesh.chandran@intel.com, bruce.richardson@intel.com, jianfeng.tan@intel.com, helin.zhang@intel.com, adrien.mazarguil@6wind.com Date: Thu, 21 Jul 2016 10:08:19 +0200 Message-Id: <1469088510-7552-2-git-send-email-olivier.matz@6wind.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1469088510-7552-1-git-send-email-olivier.matz@6wind.com> References: <1469088510-7552-1-git-send-email-olivier.matz@6wind.com> Subject: [dpdk-dev] [PATCH 01/12] virtio: move device initialization in a function 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: , X-List-Received-Date: Thu, 21 Jul 2016 08:08:49 -0000 Move all code related to device initialization in a new function virtio_init_device(). This commit brings no functional change, it prepares the next commits that will add the offload support. For that, it will be needed to reinitialize the device from ethdev->configure(), using this new function. Signed-off-by: Olivier Matz --- drivers/net/virtio/virtio_ethdev.c | 99 ++++++++++++++++++++++---------------- 1 file changed, 58 insertions(+), 41 deletions(-) diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c index fcc996e..4926a2c 100644 --- a/drivers/net/virtio/virtio_ethdev.c +++ b/drivers/net/virtio/virtio_ethdev.c @@ -1118,46 +1118,13 @@ rx_func_get(struct rte_eth_dev *eth_dev) eth_dev->rx_pkt_burst = &virtio_recv_pkts; } -/* - * This function is based on probe() function in virtio_pci.c - * It returns 0 on success. - */ -int -eth_virtio_dev_init(struct rte_eth_dev *eth_dev) +static int +virtio_init_device(struct rte_eth_dev *eth_dev) { struct virtio_hw *hw = eth_dev->data->dev_private; struct virtio_net_config *config; struct virtio_net_config local_config; - struct rte_pci_device *pci_dev; - uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE; - int ret; - - RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); - - eth_dev->dev_ops = &virtio_eth_dev_ops; - eth_dev->tx_pkt_burst = &virtio_xmit_pkts; - - if (rte_eal_process_type() == RTE_PROC_SECONDARY) { - rx_func_get(eth_dev); - return 0; - } - - /* Allocate memory for storing MAC addresses */ - eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); - if (eth_dev->data->mac_addrs == NULL) { - PMD_INIT_LOG(ERR, - "Failed to allocate %d bytes needed to store MAC addresses", - VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); - return -ENOMEM; - } - - pci_dev = eth_dev->pci_dev; - - if (pci_dev) { - ret = vtpci_init(pci_dev, hw, &dev_flags); - if (ret) - return ret; - } + struct rte_pci_device *pci_dev = eth_dev->pci_dev; /* Reset the device although not necessary at startup */ vtpci_reset(hw); @@ -1172,10 +1139,11 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) /* If host does not support status then disable LSC */ if (!vtpci_with_feature(hw, VIRTIO_NET_F_STATUS)) - dev_flags &= ~RTE_ETH_DEV_INTR_LSC; + eth_dev->data->dev_flags &= ~RTE_ETH_DEV_INTR_LSC; + else + eth_dev->data->dev_flags |= RTE_ETH_DEV_INTR_LSC; rte_eth_copy_pci_info(eth_dev, pci_dev); - eth_dev->data->dev_flags = dev_flags; rx_func_get(eth_dev); @@ -1254,12 +1222,61 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev) eth_dev->data->port_id, pci_dev->id.vendor_id, pci_dev->id.device_id); + virtio_dev_cq_start(eth_dev); + + return 0; +} + +/* + * This function is based on probe() function in virtio_pci.c + * It returns 0 on success. + */ +int +eth_virtio_dev_init(struct rte_eth_dev *eth_dev) +{ + struct virtio_hw *hw = eth_dev->data->dev_private; + struct rte_pci_device *pci_dev; + uint32_t dev_flags = RTE_ETH_DEV_DETACHABLE; + int ret; + + RTE_BUILD_BUG_ON(RTE_PKTMBUF_HEADROOM < sizeof(struct virtio_net_hdr_mrg_rxbuf)); + + eth_dev->dev_ops = &virtio_eth_dev_ops; + eth_dev->tx_pkt_burst = &virtio_xmit_pkts; + + if (rte_eal_process_type() == RTE_PROC_SECONDARY) { + rx_func_get(eth_dev); + return 0; + } + + /* Allocate memory for storing MAC addresses */ + eth_dev->data->mac_addrs = rte_zmalloc("virtio", VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN, 0); + if (eth_dev->data->mac_addrs == NULL) { + PMD_INIT_LOG(ERR, + "Failed to allocate %d bytes needed to store MAC addresses", + VIRTIO_MAX_MAC_ADDRS * ETHER_ADDR_LEN); + return -ENOMEM; + } + + pci_dev = eth_dev->pci_dev; + + if (pci_dev) { + ret = vtpci_init(pci_dev, hw, &dev_flags); + if (ret) + return ret; + } + + eth_dev->data->dev_flags = dev_flags; + + /* reset device and negotiate features */ + ret = virtio_init_device(eth_dev); + if (ret < 0) + return ret; + /* Setup interrupt callback */ if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) rte_intr_callback_register(&pci_dev->intr_handle, - virtio_interrupt_handler, eth_dev); - - virtio_dev_cq_start(eth_dev); + virtio_interrupt_handler, eth_dev); return 0; } -- 2.8.1