From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alejandro Lucero Subject: [PATCH v2 4/5] net/nfp: check hugepages IOVAs based on DMA mask Date: Fri, 31 Aug 2018 13:50:56 +0100 Message-ID: <1535719857-19092-5-git-send-email-alejandro.lucero@netronome.com> References: <1535719857-19092-1-git-send-email-alejandro.lucero@netronome.com> Cc: stable@dpdk.org To: dev@dpdk.org Return-path: In-Reply-To: <1535719857-19092-1-git-send-email-alejandro.lucero@netronome.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" NFP devices can not handle DMA addresses requiring more than 40 bits. This patch uses rte_dev_check_dma_mask with 40 bits and avoids device initialization if memory out of NFP range. Signed-off-by: Alejandro Lucero --- drivers/net/nfp/nfp_net.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c index 6e5e305..aedca31 100644 --- a/drivers/net/nfp/nfp_net.c +++ b/drivers/net/nfp/nfp_net.c @@ -2688,6 +2688,14 @@ uint32_t nfp_net_txq_full(struct nfp_net_txq *txq) pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); + /* NFP can not handle DMA addresses requiring more than 40 bits */ + if (rte_eal_check_dma_mask(40) < 0) { + RTE_LOG(INFO, PMD, "device %s can not be used:", + pci_dev->device.name); + RTE_LOG(INFO, PMD, "\trestricted dma mask to 40 bits!\n"); + return -ENODEV; + }; + if ((pci_dev->id.device_id == PCI_DEVICE_ID_NFP4000_PF_NIC) || (pci_dev->id.device_id == PCI_DEVICE_ID_NFP6000_PF_NIC)) { port = get_pf_port_number(eth_dev->data->name); -- 1.9.1