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From: Alejandro Lucero <alejandro.lucero@netronome.com>
To: dev@dpdk.org
Subject: [PATCH v2 5/6] net/nfp: check hugepages IOVAs based on DMA mask
Date: Fri,  5 Oct 2018 13:06:51 +0100	[thread overview]
Message-ID: <1538741212-7922-6-git-send-email-alejandro.lucero@netronome.com> (raw)
In-Reply-To: <1538741212-7922-1-git-send-email-alejandro.lucero@netronome.com>

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 <alejandro.lucero@netronome.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 170b5d6..3910980 100644
--- a/drivers/net/nfp/nfp_net.c
+++ b/drivers/net/nfp/nfp_net.c
@@ -2680,6 +2680,14 @@ 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)) {
+		RTE_LOG(ERR, PMD, "device %s can not be used:",
+				   pci_dev->device.name);
+		RTE_LOG(ERR, 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

  parent reply	other threads:[~2018-10-05 12:08 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-05 12:06 [PATCH v2 0/6] use IOVAs check based on DMA mask Alejandro Lucero
2018-10-05 12:06 ` [PATCH v2 1/6] mem: add function for checking memsegs IOVAs addresses Alejandro Lucero
2018-10-05 12:15   ` Burakov, Anatoly
2018-10-05 12:19     ` Alejandro Lucero
2018-10-05 12:20       ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 2/6] mem: use address hint for mapping hugepages Alejandro Lucero
2018-10-05 12:16   ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 3/6] bus/pci: check iommu addressing limitation just once Alejandro Lucero
2018-10-05 12:16   ` Burakov, Anatoly
2018-10-05 12:06 ` [PATCH v2 4/6] bus/pci: use IOVAs dmak mask check when setting IOVA mode Alejandro Lucero
2018-10-05 12:18   ` Burakov, Anatoly
2018-10-05 12:06 ` Alejandro Lucero [this message]
2018-10-05 12:06 ` [PATCH v2 6/6] net/nfp: support IOVA VA mode Alejandro Lucero
  -- strict thread matches above, loose matches on Subject: below --
2018-07-03 12:09 [PATCH v2 0/6] use IOVAs check based on DMA mask Alejandro Lucero
2018-07-03 12:09 ` [PATCH v2 5/6] net/nfp: check hugepages IOVAs " Alejandro Lucero

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