ide: Add "ide-cf" driver, a CompactFlash card

This allows attaching IDE_CFATA device to an IDE bus. Behaves like a
CompactFlash card in True IDE mode.

Tested with:

  qemu-system-i386 \
    -device driver=ide-cf,drive=cf,bus=ide.0 \
    -drive id=cf,index=0,format=raw,if=none,file=cf.img

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Message-Id: <20221130120319.706885-1-lkundrak@v3.sk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/ide/qdev.c

@@ -283,6 +283,11 @@ static void ide_cd_realize(IDEDevice *dev, Error **errp)
     ide_dev_initfn(dev, IDE_CD, errp);
 }
 
+static void ide_cf_realize(IDEDevice *dev, Error **errp)
+{
+    ide_dev_initfn(dev, IDE_CFATA, errp);
+}
+
 #define DEFINE_IDE_DEV_PROPERTIES()                     \
     DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf),        \
     DEFINE_BLOCK_ERROR_PROPERTIES(IDEDrive, dev.conf),  \
@@ -341,6 +346,32 @@ static const TypeInfo ide_cd_info = {
     .class_init    = ide_cd_class_init,
 };
 
+static Property ide_cf_properties[] = {
+    DEFINE_IDE_DEV_PROPERTIES(),
+    DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
+    DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
+                IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void ide_cf_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
+
+    k->realize  = ide_cf_realize;
+    dc->fw_name = "drive";
+    dc->desc    = "virtual CompactFlash card";
+    device_class_set_props(dc, ide_cf_properties);
+}
+
+static const TypeInfo ide_cf_info = {
+    .name          = "ide-cf",
+    .parent        = TYPE_IDE_DEVICE,
+    .instance_size = sizeof(IDEDrive),
+    .class_init    = ide_cf_class_init,
+};
+
 static void ide_device_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *k = DEVICE_CLASS(klass);
@@ -365,6 +396,7 @@ static void ide_register_types(void)
     type_register_static(&ide_bus_info);
     type_register_static(&ide_hd_info);
     type_register_static(&ide_cd_info);
+    type_register_static(&ide_cf_info);
     type_register_static(&ide_device_type_info);
 }