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-rw-r--r--hw/core/machine.c23
-rw-r--r--hw/display/virtio-gpu-pci.c4
-rw-r--r--hw/display/virtio-vga.c4
-rw-r--r--hw/virtio/virtio-crypto-pci.c4
-rw-r--r--hw/virtio/virtio-input-pci.c4
-rw-r--r--hw/virtio/virtio-pci.c26
-rw-r--r--hw/virtio/virtio-pci.h31
7 files changed, 73 insertions, 23 deletions
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 5d046a4..934c1bc 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -102,9 +102,26 @@ const size_t hw_compat_2_7_len = G_N_ELEMENTS(hw_compat_2_7);
GlobalProperty hw_compat_2_6[] = {
{ "virtio-mmio", "format_transport_address", "off" },
- /* Optional because not all virtio-pci devices support legacy mode */
- { "virtio-pci", "disable-modern", "on", .optional = true },
- { "virtio-pci", "disable-legacy", "off", .optional = true },
+ /*
+ * don't include devices which are modern-only
+ * ie keyboard, mouse, tablet, gpu, vga & crypto
+ */
+ { "virtio-9p-pci", "disable-modern", "on" },
+ { "virtio-9p-pci", "disable-legacy", "off" },
+ { "virtio-balloon-pci", "disable-modern", "on" },
+ { "virtio-balloon-pci", "disable-legacy", "off" },
+ { "virtio-blk-pci", "disable-modern", "on" },
+ { "virtio-blk-pci", "disable-legacy", "off" },
+ { "virtio-input-host-pci", "disable-modern", "on" },
+ { "virtio-input-host-pci", "disable-legacy", "off" },
+ { "virtio-net-pci", "disable-modern", "on" },
+ { "virtio-net-pci", "disable-legacy", "off" },
+ { "virtio-rng-pci", "disable-modern", "on" },
+ { "virtio-rng-pci", "disable-legacy", "off" },
+ { "virtio-scsi-pci", "disable-modern", "on" },
+ { "virtio-scsi-pci", "disable-legacy", "off" },
+ { "virtio-serial-pci", "disable-modern", "on" },
+ { "virtio-serial-pci", "disable-legacy", "off" },
};
const size_t hw_compat_2_6_len = G_N_ELEMENTS(hw_compat_2_6);
diff --git a/hw/display/virtio-gpu-pci.c b/hw/display/virtio-gpu-pci.c
index bdcd33c..0bc4d9d 100644
--- a/hw/display/virtio-gpu-pci.c
+++ b/hw/display/virtio-gpu-pci.c
@@ -47,7 +47,9 @@ static void virtio_gpu_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
Error *local_error = NULL;
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
- virtio_pci_force_virtio_1(vpci_dev);
+ if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
+ return;
+ }
object_property_set_bool(OBJECT(vdev), true, "realized", &local_error);
if (local_error) {
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index a2b803b..5d57bf5 100644
--- a/hw/display/virtio-vga.c
+++ b/hw/display/virtio-vga.c
@@ -154,7 +154,9 @@ static void virtio_vga_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
/* init virtio bits */
qdev_set_parent_bus(DEVICE(g), BUS(&vpci_dev->bus));
- virtio_pci_force_virtio_1(vpci_dev);
+ if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
+ return;
+ }
object_property_set_bool(OBJECT(g), true, "realized", &err);
if (err) {
error_propagate(errp, err);
diff --git a/hw/virtio/virtio-crypto-pci.c b/hw/virtio/virtio-crypto-pci.c
index 90a6e0d..13807e5 100644
--- a/hw/virtio/virtio-crypto-pci.c
+++ b/hw/virtio/virtio-crypto-pci.c
@@ -51,7 +51,9 @@ static void virtio_crypto_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
}
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
- virtio_pci_force_virtio_1(vpci_dev);
+ if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
+ return;
+ }
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
object_property_set_link(OBJECT(vcrypto),
OBJECT(vcrypto->vdev.conf.cryptodev), "cryptodev",
diff --git a/hw/virtio/virtio-input-pci.c b/hw/virtio/virtio-input-pci.c
index 2c13978..2847772 100644
--- a/hw/virtio/virtio-input-pci.c
+++ b/hw/virtio/virtio-input-pci.c
@@ -48,7 +48,9 @@ static void virtio_input_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
DeviceState *vdev = DEVICE(&vinput->vdev);
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
- virtio_pci_force_virtio_1(vpci_dev);
+ if (!virtio_pci_force_virtio_1(vpci_dev, errp)) {
+ return;
+ }
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c
index cb44e19..509c1ff 100644
--- a/hw/virtio/virtio-pci.c
+++ b/hw/virtio/virtio-pci.c
@@ -1721,16 +1721,22 @@ static void virtio_pci_realize(PCIDevice *pci_dev, Error **errp)
/* PCI BAR regions must be powers of 2 */
pow2ceil(proxy->notify.offset + proxy->notify.size));
- if (proxy->disable_legacy == ON_OFF_AUTO_AUTO) {
- proxy->disable_legacy = pcie_port ? ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
- }
-
- if (!virtio_pci_modern(proxy) && !virtio_pci_legacy(proxy)) {
- error_setg(errp, "device cannot work as neither modern nor legacy mode"
- " is enabled");
- error_append_hint(errp, "Set either disable-modern or disable-legacy"
- " to off\n");
- return;
+ if ((proxy->disable_legacy == ON_OFF_AUTO_ON) ||
+ ((proxy->disable_legacy == ON_OFF_AUTO_AUTO) && pcie_port)) {
+ if (proxy->disable_modern) {
+ error_setg(errp, "device cannot work as neither modern nor "
+ "legacy mode is enabled");
+ error_append_hint(errp, "Set either disable-modern or "
+ "disable-legacy to off\n");
+ return;
+ }
+ proxy->mode = VIRTIO_PCI_MODE_MODERN;
+ } else {
+ if (proxy->disable_modern) {
+ proxy->mode = VIRTIO_PCI_MODE_LEGACY;
+ } else {
+ proxy->mode = VIRTIO_PCI_MODE_TRANSITIONAL;
+ }
}
if (pcie_port && pci_is_express(pci_dev)) {
diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h
index 1858185..bfea289 100644
--- a/hw/virtio/virtio-pci.h
+++ b/hw/virtio/virtio-pci.h
@@ -15,6 +15,7 @@
#ifndef QEMU_VIRTIO_PCI_H
#define QEMU_VIRTIO_PCI_H
+#include "qapi/error.h"
#include "hw/pci/msi.h"
#include "hw/virtio/virtio-bus.h"
@@ -118,6 +119,12 @@ typedef struct VirtIOPCIQueue {
uint32_t used[2];
} VirtIOPCIQueue;
+typedef enum {
+ VIRTIO_PCI_MODE_LEGACY,
+ VIRTIO_PCI_MODE_TRANSITIONAL,
+ VIRTIO_PCI_MODE_MODERN,
+} VirtIOPCIMode;
+
struct VirtIOPCIProxy {
PCIDevice pci_dev;
MemoryRegion bar;
@@ -142,6 +149,7 @@ struct VirtIOPCIProxy {
bool disable_modern;
bool ignore_backend_features;
OnOffAuto disable_legacy;
+ VirtIOPCIMode mode;
uint32_t class_code;
uint32_t nvectors;
uint32_t dfselect;
@@ -156,23 +164,34 @@ struct VirtIOPCIProxy {
static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy)
{
- return !proxy->disable_modern;
+ return proxy->mode != VIRTIO_PCI_MODE_LEGACY;
}
static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy)
{
- return proxy->disable_legacy == ON_OFF_AUTO_OFF;
+ return proxy->mode != VIRTIO_PCI_MODE_MODERN;
}
-static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy)
+static inline bool virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy,
+ Error **errp)
{
- proxy->disable_modern = false;
- proxy->disable_legacy = ON_OFF_AUTO_ON;
+ if (proxy->disable_legacy == ON_OFF_AUTO_OFF) {
+ error_setg(errp, "Unable to set disable-legacy=off on a virtio-1.0 "
+ "only device");
+ return false;
+ }
+ if (proxy->disable_modern == true) {
+ error_setg(errp, "Unable to set disable-modern=on on a virtio-1.0 "
+ "only device");
+ return false;
+ }
+ proxy->mode = VIRTIO_PCI_MODE_MODERN;
+ return true;
}
static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy)
{
- proxy->disable_modern = true;
+ proxy->mode = VIRTIO_PCI_MODE_LEGACY;
}
/*
generated by cgit v1.1 at 2024-11-03 16:33:04 +0000