diff options
| -rw-r--r-- | src/vlib/linux/pci.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/vlib/linux/pci.c b/src/vlib/linux/pci.c index 6078be2537e..1caf0c9c229 100644 --- a/src/vlib/linux/pci.c +++ b/src/vlib/linux/pci.c @@ -1134,9 +1134,21 @@ vlib_pci_map_region_int (vlib_main_t * vm, vlib_pci_dev_handle_t h, clib_error_t *error; int flags = MAP_SHARED; u64 size = 0, offset = 0; + u16 command; pci_log_debug (vm, p, "map region %u to va %p", bar, addr); + if ((error = vlib_pci_read_config_u16 (vm, h, 4, &command))) + return error; + + if (!(command & PCI_COMMAND_MEMORY)) + { + pci_log_debug (vm, p, "setting memory enable bit"); + command |= PCI_COMMAND_MEMORY; + if ((error = vlib_pci_write_config_u16 (vm, h, 4, &command))) + return error; + } + if ((error = vlib_pci_region (vm, h, bar, &fd, &size, &offset))) return error; |