From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Santosh Shukla <sshukla@mvista.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v7 3/4] eal/linux: vfio: ignore mapping for ioport region
Date: Mon, 8 Feb 2016 09:15:42 +0000 [thread overview]
Message-ID: <C6ECDF3AB251BE4894318F4E45123697820C6D87@IRSMSX109.ger.corp.intel.com> (raw)
In-Reply-To: <1454853068-14621-4-git-send-email-sshukla@mvista.com>
> vfio_pci_mmap() try to map all pci bars. ioport region are not mapped in
> vfio/kernel so ignore mmaping for ioport.
>
> Signed-off-by: Santosh Shukla <sshukla@mvista.com>
> ---
> lib/librte_eal/linuxapp/eal/eal_pci_vfio.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
> b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
> index ffa2dd0..4832313 100644
> --- a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
> +++ b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
> @@ -659,6 +659,7 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
> struct pci_map *maps;
> uint32_t msix_table_offset = 0;
> uint32_t msix_table_size = 0;
> + uint32_t ioport_bar;
>
> dev->intr_handle.fd = -1;
> dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; @@ -853,6
> +854,25 @@ pci_vfio_map_resource(struct rte_pci_device *dev)
> return -1;
> }
>
> + /* chk for io port region */
> + ret = pread64(vfio_dev_fd, &ioport_bar, sizeof(ioport_bar),
> +
> VFIO_GET_REGION_ADDR(VFIO_PCI_CONFIG_REGION_INDEX)
> + + PCI_BASE_ADDRESS_0 + i*4);
> +
> + if (ret != sizeof(ioport_bar)) {
> + RTE_LOG(ERR, EAL,
> + "Cannot read command (%x) from config
> space!\n",
> + PCI_BASE_ADDRESS_0 + i*4);
> + return -1;
> + }
> +
> + if (ioport_bar & PCI_BASE_ADDRESS_SPACE_IO) {
> + RTE_LOG(INFO, EAL,
> + "Ignore mapping IO port bar(%d) addr:
> %x\n",
> + i, ioport_bar);
> + continue;
> + }
> +
> /* skip non-mmapable BARs */
> if ((reg.flags & VFIO_REGION_INFO_FLAG_MMAP) == 0)
> continue;
> --
> 1.7.9.5
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
next prev parent reply other threads:[~2016-02-08 9:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-07 13:51 [dpdk-dev] [PATCH v7 0/4] Add virtio support for arm/arm64 Santosh Shukla
2016-02-07 13:51 ` [dpdk-dev] [PATCH v7 1/4] eal/linux: never check iopl for arm Santosh Shukla
2016-02-18 5:26 ` Santosh Shukla
2016-02-07 13:51 ` [dpdk-dev] [PATCH v7 2/4] virtio: Introduce config RTE_VIRTIO_INC_VECTOR Santosh Shukla
2016-02-07 21:25 ` Thomas Monjalon
2016-02-08 5:45 ` Santosh Shukla
[not found] ` <CAAyOgsZO+6+kFZZZM203fPR3AmVYB0v7j3-f+DawZOCuR-AVvQ@mail.gmail.com>
[not found] ` <20160215105743.GB21426@yliu-dev.sh.intel.com>
[not found] ` <CAAyOgsaT5TcsPfum8x6yzAJAz=5N+c5QebEn7KCyJn7oK=VMsw@mail.gmail.com>
2016-02-16 3:05 ` Yuanhan Liu
2016-02-19 4:46 ` Santosh Shukla
2016-02-19 6:42 ` Yuanhan Liu
2016-02-22 2:03 ` Xie, Huawei
2016-02-22 4:14 ` Santosh Shukla
2016-02-22 10:22 ` Thomas Monjalon
2016-02-07 13:51 ` [dpdk-dev] [PATCH v7 3/4] eal/linux: vfio: ignore mapping for ioport region Santosh Shukla
2016-02-08 9:15 ` Burakov, Anatoly [this message]
2016-02-18 5:26 ` Santosh Shukla
2016-02-07 13:51 ` [dpdk-dev] [PATCH v7 4/4] eal/linux: vfio: add pci ioport support Santosh Shukla
2016-02-08 8:51 ` David Marchand
2016-02-08 9:40 ` Santosh Shukla
2016-02-21 14:17 ` [dpdk-dev] [PATCH v9 0/3] Add virtio support for arm/arm64 Santosh Shukla
2016-02-21 14:17 ` [dpdk-dev] [PATCH v9 1/3] eal/linux: never check iopl for arm Santosh Shukla
2016-02-21 14:18 ` [dpdk-dev] [PATCH v9 2/3] eal/linux: vfio: ignore mapping for ioport region Santosh Shukla
2016-02-21 14:18 ` [dpdk-dev] [PATCH v9 3/3] eal/linux: vfio: add pci ioport support Santosh Shukla
2016-02-22 5:41 ` [dpdk-dev] [PATCH v9 0/3] Add virtio support for arm/arm64 Yuanhan Liu
2016-02-23 6:11 ` Santosh Shukla
2016-02-24 10:45 ` Thomas Monjalon
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