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[src/trunk]: src/sys/dev/pci virtio: reconfigure MSI-X vector on re-initializ...
details: https://anonhg.NetBSD.org/src/rev/a79cc1da44e5
branches: trunk
changeset: 1024383:a79cc1da44e5
user: yamaguchi <yamaguchi%NetBSD.org@localhost>
date: Thu Oct 21 05:37:43 2021 +0000
description:
virtio: reconfigure MSI-X vector on re-initialization
This may fix a problem that some interrupts, for example
link-state change of vioif(4) are not notified.
diffstat:
sys/dev/pci/virtio.c | 14 ++++++++++----
sys/dev/pci/virtio_pci.c | 34 ++++++++++++++++++++++------------
sys/dev/pci/virtiovar.h | 4 ++--
3 files changed, 34 insertions(+), 18 deletions(-)
diffs (164 lines):
diff -r 6baaf85dadcb -r a79cc1da44e5 sys/dev/pci/virtio.c
--- a/sys/dev/pci/virtio.c Thu Oct 21 05:32:27 2021 +0000
+++ b/sys/dev/pci/virtio.c Thu Oct 21 05:37:43 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: virtio.c,v 1.50 2021/10/21 05:32:27 yamaguchi Exp $ */
+/* $NetBSD: virtio.c,v 1.51 2021/10/21 05:37:43 yamaguchi Exp $ */
/*
* Copyright (c) 2020 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.50 2021/10/21 05:32:27 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: virtio.c,v 1.51 2021/10/21 05:37:43 yamaguchi Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -93,7 +93,7 @@
void
virtio_reinit_start(struct virtio_softc *sc)
{
- int i;
+ int i, r;
virtio_set_status(sc, VIRTIO_CONFIG_DEVICE_STATUS_ACK);
virtio_set_status(sc, VIRTIO_CONFIG_DEVICE_STATUS_DRIVER);
@@ -112,6 +112,12 @@
sc->sc_ops->setup_queue(sc, vq->vq_index,
vq->vq_dmamap->dm_segs[0].ds_addr);
}
+
+ r = sc->sc_ops->setup_interrupts(sc, 1);
+ if (r != 0) {
+ printf("%s: failed to setup interrupts\n",
+ device_xname(sc->sc_dev));
+ }
}
void
@@ -1205,7 +1211,7 @@
goto fail;
}
- r = sc->sc_ops->setup_interrupts(sc);
+ r = sc->sc_ops->setup_interrupts(sc, 0);
if (r != 0) {
aprint_error_dev(sc->sc_dev, "failed to setup interrupts\n");
}
diff -r 6baaf85dadcb -r a79cc1da44e5 sys/dev/pci/virtio_pci.c
--- a/sys/dev/pci/virtio_pci.c Thu Oct 21 05:32:27 2021 +0000
+++ b/sys/dev/pci/virtio_pci.c Thu Oct 21 05:37:43 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: virtio_pci.c,v 1.31 2021/10/21 05:32:27 yamaguchi Exp $ */
+/* $NetBSD: virtio_pci.c,v 1.32 2021/10/21 05:37:43 yamaguchi Exp $ */
/*
* Copyright (c) 2020 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: virtio_pci.c,v 1.31 2021/10/21 05:32:27 yamaguchi Exp $");
+__KERNEL_RCSID(0, "$NetBSD: virtio_pci.c,v 1.32 2021/10/21 05:37:43 yamaguchi Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -112,8 +112,8 @@
static int virtio_pci_intr(void *arg);
static int virtio_pci_msix_queue_intr(void *);
static int virtio_pci_msix_config_intr(void *);
-static int virtio_pci_setup_interrupts_09(struct virtio_softc *);
-static int virtio_pci_setup_interrupts_10(struct virtio_softc *);
+static int virtio_pci_setup_interrupts_09(struct virtio_softc *, int);
+static int virtio_pci_setup_interrupts_10(struct virtio_softc *, int);
static int virtio_pci_establish_msix_interrupts(struct virtio_softc *,
struct pci_attach_args *);
static int virtio_pci_establish_intx_interrupt(struct virtio_softc *,
@@ -805,7 +805,7 @@
* -------------------------------------*/
static int
-virtio_pci_setup_interrupts_10(struct virtio_softc *sc)
+virtio_pci_setup_interrupts_10(struct virtio_softc *sc, int reinit)
{
struct virtio_pci_softc * const psc = (struct virtio_pci_softc *)sc;
device_t self = sc->sc_dev;
@@ -821,7 +821,10 @@
VIRTIO_CONFIG1_CONFIG_MSIX_VECTOR, vector);
ret = bus_space_read_2(iot, ioh, VIRTIO_CONFIG1_CONFIG_MSIX_VECTOR);
if (ret != vector) {
- aprint_error_dev(self, "can't set config msix vector\n");
+ if (reinit == 0) {
+ aprint_error_dev(self,
+ "can't set config msix vector\n");
+ }
return -1;
}
@@ -836,8 +839,10 @@
ret = bus_space_read_2(iot, ioh,
VIRTIO_CONFIG1_QUEUE_MSIX_VECTOR);
if (ret != vector) {
- aprint_error_dev(self, "can't set queue %d "
- "msix vector\n", qid);
+ if (reinit == 0) {
+ aprint_error_dev(self, "can't set queue %d "
+ "msix vector\n", qid);
+ }
return -1;
}
}
@@ -846,7 +851,7 @@
}
static int
-virtio_pci_setup_interrupts_09(struct virtio_softc *sc)
+virtio_pci_setup_interrupts_09(struct virtio_softc *sc, int reinit)
{
struct virtio_pci_softc * const psc = (struct virtio_pci_softc *)sc;
device_t self = sc->sc_dev;
@@ -863,7 +868,10 @@
aprint_debug_dev(sc->sc_dev, "expected=%d, actual=%d\n",
vector, ret);
if (ret != vector) {
- aprint_error_dev(self, "can't set config msix vector\n");
+ if (reinit == 0) {
+ aprint_error_dev(self,
+ "can't set config msix vector\n");
+ }
return -1;
}
@@ -882,8 +890,10 @@
aprint_debug_dev(sc->sc_dev, "expected=%d, actual=%d\n",
vector, ret);
if (ret != vector) {
- aprint_error_dev(self, "can't set queue %d "
- "msix vector\n", qid);
+ if (reinit == 0) {
+ aprint_error_dev(self, "can't set queue %d "
+ "msix vector\n", qid);
+ }
return -1;
}
}
diff -r 6baaf85dadcb -r a79cc1da44e5 sys/dev/pci/virtiovar.h
--- a/sys/dev/pci/virtiovar.h Thu Oct 21 05:32:27 2021 +0000
+++ b/sys/dev/pci/virtiovar.h Thu Oct 21 05:37:43 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: virtiovar.h,v 1.21 2021/10/21 05:32:27 yamaguchi Exp $ */
+/* $NetBSD: virtiovar.h,v 1.22 2021/10/21 05:37:43 yamaguchi Exp $ */
/*
* Copyright (c) 2010 Minoura Makoto.
@@ -141,7 +141,7 @@
void (*neg_features)(struct virtio_softc *, uint64_t);
int (*alloc_interrupts)(struct virtio_softc *);
void (*free_interrupts)(struct virtio_softc *);
- int (*setup_interrupts)(struct virtio_softc *);
+ int (*setup_interrupts)(struct virtio_softc *, int);
};
struct virtio_softc {
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