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 at 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 74f91ba..abde779 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_vfio.c
@@ -573,6 +573,7 @@ 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;
@@ -760,6 +761,25 @@ 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
