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-rw-r--r--src/vlib/linux/pci.c12
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;