nvme: Enable PCI bus mastering

U-Boot sets up devices ready for use, but coreboot does not. Enable this so that NVMe works OK from coreboot. Signed-off-by: Simon Glass <[email protected]> Reviewed-by: Bin Meng <[email protected]>
imaami · May 11, 2023 · 3853471 · 3853471
1 parent 2f5210b
commit 3853471
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/drivers/nvme/nvme_pci.c b/drivers/nvme/nvme_pci.c
@@ -6,6 +6,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <init.h>
 #include <pci.h>
 #include "nvme.h"
 
@@ -30,6 +31,10 @@ static int nvme_probe(struct udevice *udev)
 	ndev->instance = trailing_strtol(udev->name);
 	ndev->bar = dm_pci_map_bar(udev, PCI_BASE_ADDRESS_0, 0, 0,
 				   PCI_REGION_TYPE, PCI_REGION_MEM);
+
+	/* Turn on bus-mastering */
+	dm_pci_clrset_config16(udev, PCI_COMMAND, 0, PCI_COMMAND_MASTER);
+
 	return nvme_init(udev);
 }