Module Name: src
Committed By: uwe
Date: Thu Feb 15 19:05:10 UTC 2018
Modified Files:
src/sys/dev/pci: virtio_pci.c
Log Message:
Explicitly enable PCI_COMMAND_MASTER_ENABLE and PCI_COMMAND_IO_ENABLE.
Recent versions of VirtualBox do not enable bus-mastering by default -
this will be fixed, but it doesn't hurt to do it ourselves too.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/dev/pci/virtio_pci.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/pci/virtio_pci.c
diff -u src/sys/dev/pci/virtio_pci.c:1.1 src/sys/dev/pci/virtio_pci.c:1.2
--- src/sys/dev/pci/virtio_pci.c:1.1 Wed Aug 2 08:39:14 2017
+++ src/sys/dev/pci/virtio_pci.c Thu Feb 15 19:05:10 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: virtio_pci.c,v 1.1 2017/08/02 08:39:14 cherry Exp $ */
+/* $NetBSD: virtio_pci.c,v 1.2 2018/02/15 19:05:10 uwe Exp $ */
/*
* Copyright (c) 2010 Minoura Makoto.
@@ -94,6 +94,7 @@ virtio_attach(device_t parent, device_t
pcitag_t tag = pa->pa_tag;
int revision;
pcireg_t id;
+ pcireg_t csr;
revision = PCI_REVISION(pa->pa_class);
if (revision != 0) {
@@ -111,6 +112,10 @@ virtio_attach(device_t parent, device_t
virtio_device_name[PCI_SUBSYS_ID(id)] : "Unknown"),
revision);
+ csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
+ csr |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_IO_ENABLE;
+ pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, csr);
+
sc->sc_dev = self;
sc->sc_pc = pc;
sc->sc_tag = tag;
