summary refs log tree commit diff stats
path: root/hw
diff options
context:
space:
mode:
Diffstat (limited to 'hw')
-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 5d046a43e3..934c1bcceb 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 bdcd33c925..0bc4d9d424 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 a2b803b75f..5d57bf5b0c 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 90a6e0dc2e..13807e538b 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 2c1397842b..28477729a3 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 cb44e19b67..509c1ff555 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 18581854ca..bfea2892a5 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;
 }
 
 /*