From mboxrd@z Thu Jan 1 00:00:00 1970 From: Santosh Shukla Subject: [PATCH v8 3/4] eal/linux: vfio: ignore mapping for ioport region Date: Mon, 8 Feb 2016 15:33:34 +0530 Message-ID: <1454925815-14292-1-git-send-email-sshukla@mvista.com> References: <0000-cover-letter.patch> To: dev@dpdk.org Return-path: Received: from mail-pf0-f179.google.com (mail-pf0-f179.google.com [209.85.192.179]) by dpdk.org (Postfix) with ESMTP id 072E35677 for ; Mon, 8 Feb 2016 11:05:17 +0100 (CET) Received: by mail-pf0-f179.google.com with SMTP id o185so107362691pfb.1 for ; Mon, 08 Feb 2016 02:05:16 -0800 (PST) In-Reply-To: <0000-cover-letter.patch> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 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 Acked-by: Anatoly Burakov --- v7-->v8: - included Anatoly acked-by: 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