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.
Applicable to v17.11.3 only.
Signed-off-by: Alejandro Lucero <alejandro.luc...@netronome.com>
Acked-by: Eelco Chaudron <echau...@redhat.com>
---
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 d9cd047..8fc1b8f 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -2649,6 +2649,14 @@ 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
