diff options
Diffstat (limited to 'sys/dev/nvme/nvme_ctrlr.c')
| -rw-r--r-- | sys/dev/nvme/nvme_ctrlr.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sys/dev/nvme/nvme_ctrlr.c b/sys/dev/nvme/nvme_ctrlr.c index f3514a4..1ddf9cc 100644 --- a/sys/dev/nvme/nvme_ctrlr.c +++ b/sys/dev/nvme/nvme_ctrlr.c @@ -78,6 +78,17 @@ nvme_ctrlr_allocate_bar(struct nvme_controller *ctrlr) ctrlr->bus_handle = rman_get_bushandle(ctrlr->resource); ctrlr->regs = (struct nvme_registers *)ctrlr->bus_handle; + /* + * The NVMe spec allows for the MSI-X table to be placed behind + * BAR 4/5, separate from the control/doorbell registers. Always + * try to map this bar, because it must be mapped prior to calling + * pci_alloc_msix(). If the table isn't behind BAR 4/5, + * bus_alloc_resource() will just return NULL which is OK. + */ + ctrlr->bar4_resource_id = PCIR_BAR(4); + ctrlr->bar4_resource = bus_alloc_resource(ctrlr->dev, SYS_RES_MEMORY, + &ctrlr->bar4_resource_id, 0, ~0, 1, RF_ACTIVE); + return (0); } |
