[PATCHv2 1/8] Introduce deriver_name field to DeviceInfo structure.

[Gleb Natapov <gleb@redhat.com>]

Add "deriver_name" to DeviceInfo to use in device path building. In
contrast to "name" "driver_name" should refer to functionality device
provides instead of particular device model like "name" does.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 hw/fdc.c        |    1 +
 hw/ide/isa.c    |    1 +
 hw/ide/piix.c   |    1 +
 hw/ide/qdev.c   |    1 +
 hw/isa-bus.c    |    1 +
 hw/piix_pci.c   |    2 ++
 hw/qdev.h       |    6 ++++++
 hw/virtio-pci.c |    2 ++
 8 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/hw/fdc.c b/hw/fdc.c
index c159dcb..b4217a3 100644
--- a/hw/fdc.c
+++ b/hw/fdc.c
@@ -2040,6 +2040,7 @@ static const VMStateDescription vmstate_isa_fdc ={
 static ISADeviceInfo isa_fdc_info = {
     .init = isabus_fdc_init1,
     .qdev.name  = "isa-fdc",
+    .qdev.driver_name  = "fdc",
     .qdev.size  = sizeof(FDCtrlISABus),
     .qdev.no_user = 1,
     .qdev.vmsd  = &vmstate_isa_fdc,
diff --git a/hw/ide/isa.c b/hw/ide/isa.c
index 6b57e0d..489cc99 100644
--- a/hw/ide/isa.c
+++ b/hw/ide/isa.c
@@ -98,6 +98,7 @@ ISADevice *isa_ide_init(int iobase, int iobase2, int isairq,
 
 static ISADeviceInfo isa_ide_info = {
     .qdev.name  = "isa-ide",
+    .qdev.driver_name  = "ata",
     .qdev.size  = sizeof(ISAIDEState),
     .init       = isa_ide_initfn,
     .qdev.reset = isa_ide_reset,
diff --git a/hw/ide/piix.c b/hw/ide/piix.c
index 07483e8..6206201 100644
--- a/hw/ide/piix.c
+++ b/hw/ide/piix.c
@@ -182,6 +182,7 @@ PCIDevice *pci_piix4_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)
 static PCIDeviceInfo piix_ide_info[] = {
     {
         .qdev.name    = "piix3-ide",
+        .qdev.driver_name    = "ata",
         .qdev.size    = sizeof(PCIIDEState),
         .qdev.no_user = 1,
         .init         = pci_piix3_ide_initfn,
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 0808760..341548e 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -134,6 +134,7 @@ static int ide_drive_initfn(IDEDevice *dev)
 
 static IDEDeviceInfo ide_drive_info = {
     .qdev.name  = "ide-drive",
+    .qdev.driver_name  = "ata-disk",
     .qdev.size  = sizeof(IDEDrive),
     .init       = ide_drive_initfn,
     .qdev.props = (Property[]) {
diff --git a/hw/isa-bus.c b/hw/isa-bus.c
index 4e306de..2c42b80 100644
--- a/hw/isa-bus.c
+++ b/hw/isa-bus.c
@@ -153,6 +153,7 @@ static int isabus_bridge_init(SysBusDevice *dev)
 static SysBusDeviceInfo isabus_bridge_info = {
     .init = isabus_bridge_init,
     .qdev.name  = "isabus-bridge",
+    .qdev.driver_name  = "isa",
     .qdev.size  = sizeof(SysBusDevice),
     .qdev.no_user = 1,
 };
diff --git a/hw/piix_pci.c b/hw/piix_pci.c
index 00060f3..4e5e5df 100644
--- a/hw/piix_pci.c
+++ b/hw/piix_pci.c
@@ -364,6 +364,7 @@ static PCIDeviceInfo i440fx_info[] = {
         .config_write = i440fx_write_config,
     },{
         .qdev.name    = "PIIX3",
+        .qdev.driver_name  = "pci-isa-bridge",
         .qdev.desc    = "ISA bridge",
         .qdev.size    = sizeof(PIIX3State),
         .qdev.vmsd    = &vmstate_piix3,
@@ -377,6 +378,7 @@ static PCIDeviceInfo i440fx_info[] = {
 static SysBusDeviceInfo i440fx_pcihost_info = {
     .init         = i440fx_pcihost_initfn,
     .qdev.name    = "i440FX-pcihost",
+    .qdev.driver_name = "pci",
     .qdev.size    = sizeof(I440FXState),
     .qdev.no_user = 1,
 };
diff --git a/hw/qdev.h b/hw/qdev.h
index 579328a..a9a98f8 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -139,6 +139,7 @@ typedef void (*qdev_resetfn)(DeviceState *dev);
 
 struct DeviceInfo {
     const char *name;
+    const char *driver_name;
     const char *alias;
     const char *desc;
     size_t size;
@@ -288,6 +289,11 @@ void qdev_prop_set_defaults(DeviceState *dev, Property *props);
 void qdev_prop_register_global_list(GlobalProperty *props);
 void qdev_prop_set_globals(DeviceState *dev);
 
+static inline const char *qdev_driver_name(DeviceState *dev)
+{
+    return dev->info->driver_name ? : dev->info->name;
+}
+
 /* This is a nasty hack to allow passing a NULL bus to qdev_create.  */
 extern struct BusInfo system_bus_info;
 
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 2d78ca6..b67ded6 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -769,6 +769,7 @@ static int virtio_9p_init_pci(PCIDevice *pci_dev)
 static PCIDeviceInfo virtio_info[] = {
     {
         .qdev.name = "virtio-blk-pci",
+        .qdev.driver_name = "virtio-blk",
         .qdev.size = sizeof(VirtIOPCIProxy),
         .init      = virtio_blk_init_pci,
         .exit      = virtio_blk_exit_pci,
@@ -782,6 +783,7 @@ static PCIDeviceInfo virtio_info[] = {
         .qdev.reset = virtio_pci_reset,
     },{
         .qdev.name  = "virtio-net-pci",
+        .qdev.driver_name  = "ethernet",
         .qdev.size  = sizeof(VirtIOPCIProxy),
         .init       = virtio_net_init_pci,
         .exit       = virtio_net_exit_pci,
-- 
1.7.1