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+
+PCI IDs for qemu
+================
+
+Red Hat, Inc. donates a part of its device ID range to qemu, to be used for
+virtual devices. The vendor IDs are 1af4 (formerly Qumranet ID) and 1b36.
+
+Contact Gerd Hoffmann <kraxel@redhat.com> to get a device ID assigned
+for your devices.
+
+1af4 vendor ID
+--------------
+
+The 1000 -> 10ff device ID range is used as follows for virtio-pci devices.
+Note that this allocation separate from the virtio device IDs, which are
+maintained as part of the virtio specification.
+
+1af4:1000 network device
+1af4:1001 block device
+1af4:1002 balloon device
+1af4:1003 console device
+1af4:1004 SCSI host bus adapter device
+1af4:1005 entropy generator device
+1af4:1009 9p filesystem device
+
+1af4:10f0 Available for experimental usage without registration. Must get
+ to official ID when the code leaves the test lab (i.e. when seeking
+1af4:10ff upstream merge or shipping a distro/product) to avoid conflicts.
+
+1af4:1100 Used as PCI Subsystem ID for existing hardware devices emulated
+ by qemu.
+
+1af4:1110 ivshmem device (shared memory, docs/specs/ivshmem_device_spec.txt)
+
+All other device IDs are reserved.
+
+1b36 vendor ID
+--------------
+
+The 0000 -> 00ff device ID range is used as follows for QEMU-specific
+PCI devices (other than virtio):
+
+1b36:0001 PCI-PCI bridge
+1b36:0002 PCI serial port (16550A) adapter (docs/specs/pci-serial.txt)
+1b36:0003 PCI Dual-port 16550A adapter (docs/specs/pci-serial.txt)
+1b36:0004 PCI Quad-port 16550A adapter (docs/specs/pci-serial.txt)
+
+All these devices are documented in docs/specs.
+
+The 0100 device ID is used for the QXL video card device.