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From 1b0deb27e144107939d3ac1119723b4a0e51a191 Mon Sep 17 00:00:00 2001
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From: Alejandro Lucero <alejandro.lucero@netronome.com>
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Date: Tue, 10 Jul 2018 18:25:51 +0100
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Subject: [4/5] net/nfp: check hugepages IOVAs based on DMA mask
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NFP devices can not handle DMA addresses requiring more than
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40 bits. This patch uses rte_dev_check_dma_mask with 40 bits
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and avoids device initialization if memory out of NFP range.
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Applicable to v17.11.3 only.
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Signed-off-by: Alejandro Lucero <alejandro.lucero@netronome.com>
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Acked-by: Eelco Chaudron <echaudro@redhat.com>
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---
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drivers/net/nfp/nfp_net.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/drivers/net/nfp/nfp_net.c b/drivers/net/nfp/nfp_net.c
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index 96484d9..d2a240a 100644
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--- a/drivers/net/nfp/nfp_net.c
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+++ b/drivers/net/nfp/nfp_net.c
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@@ -2653,6 +2653,14 @@ nfp_net_init(struct rte_eth_dev *eth_dev)
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pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev);
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+ /* NFP can not handle DMA addresses requiring more than 40 bits */
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+ if (rte_eal_check_dma_mask(40) < 0) {
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+ RTE_LOG(INFO, PMD, "device %s can not be used:",
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+ pci_dev->device.name);
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+ RTE_LOG(INFO, PMD, "\trestricted dma mask to 40 bits!\n");
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+ return -ENODEV;
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+ };
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+
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if ((pci_dev->id.device_id == PCI_DEVICE_ID_NFP4000_PF_NIC) ||
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(pci_dev->id.device_id == PCI_DEVICE_ID_NFP6000_PF_NIC)) {
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port = get_pf_port_number(eth_dev->data->name);
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--
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1.8.3.1
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