usb: add ehci adapter

This patch finally merges the EHCI host adapter aka USB 2.0 support.

Based on the ehci bits collected @ git://git.kiszka.org/qemu.git ehci

EHCI has a long out-of-tree history.  Project was started by Mark
Burkley, with contributions by Niels de Vos.  David S. Ahern continued
working on it.  Kevin Wolf, Jan Kiszka and Vincent Palatin contributed
bugfixes.

/me (Gerd Hoffmann) picked it up where it left off, prepared the code
for merge, fixed a few bugs and added basic user docs.

Cc: David S. Ahern <daahern@cisco.com>
Cc: Jan Kiszka <jan.kiszka@web.de>
Cc: Kevin Wolf <mail@kevin-wolf.de>
Cc: Vincent Palatin <vincent.palatin_qemu@m4x.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Makefile.objs

@@ -193,6 +193,7 @@ hw-obj-$(CONFIG_PCSPK) += pcspk.o
 hw-obj-$(CONFIG_PCKBD) += pckbd.o
 hw-obj-$(CONFIG_USB_UHCI) += usb-uhci.o
 hw-obj-$(CONFIG_USB_OHCI) += usb-ohci.o
+hw-obj-$(CONFIG_USB_EHCI) += usb-ehci.o
 hw-obj-$(CONFIG_FDC) += fdc.o
 hw-obj-$(CONFIG_ACPI) += acpi.o acpi_piix4.o
 hw-obj-$(CONFIG_APM) += pm_smbus.o apm.o

default-configs/pci.mak

@@ -3,6 +3,7 @@ CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO=y
 CONFIG_USB_UHCI=y
 CONFIG_USB_OHCI=y
+CONFIG_USB_EHCI=y
 CONFIG_NE2000_PCI=y
 CONFIG_EEPRO100_PCI=y
 CONFIG_PCNET_PCI=y

docs/usb2.txt

@@ -0,0 +1,38 @@
+
+USB 2.0 Quick Start
+===================
+
+The QEMU EHCI Adapter does *not* support companion controllers.  That
+implies there are two completely separate USB busses: One USB 1.1 bus
+driven by the UHCI controller and one USB 2.0 bus driven by the EHCI
+controller.  Devices must be attached to the correct controller
+manually.
+
+The '-usb' switch will make qemu create the UHCI controller as part of
+the PIIX3 chipset.  The USB 1.1 bus will carry the name "usb.0".
+
+You can use the standard -device switch to add a EHCI controller to
+your virtual machine.  It is strongly recommended to specify an ID for
+the controller so the USB 2.0 bus gets a individual name, for example
+'-device usb-ehci,id=ehci".  This will give you a USB 2.0 bus named
+"ehci.0".
+
+I strongly recomment to also use -device to attach usb devices because
+you can specify the bus they should be attached to this way.  Here is
+a complete example:
+
+    qemu -M pc ${otheroptions}                           \
+        -drive if=none,id=usbstick,file=/path/to/image   \
+        -usb                                             \
+        -device usb-ehci,id=ehci                         \
+        -device usb-tablet,bus=usb.0                     \
+        -device usb-storage,bus=ehci.0,drive=usbstick
+
+This attaches a usb tablet to the UHCI adapter and a usb mass storage
+device to the EHCI adapter.
+
+enjoy,
+  Gerd
+
+--
+Gerd Hoffmann <kraxel@redhat.com>

hw/pci_ids.h

@@ -100,6 +100,7 @@
 #define PCI_VENDOR_ID_INTEL              0x8086
 #define PCI_DEVICE_ID_INTEL_82441        0x1237
 #define PCI_DEVICE_ID_INTEL_82801AA_5    0x2415
+#define PCI_DEVICE_ID_INTEL_82801D       0x24CD
 #define PCI_DEVICE_ID_INTEL_ESB_9        0x25ab
 #define PCI_DEVICE_ID_INTEL_82371SB_0    0x7000
 #define PCI_DEVICE_ID_INTEL_82371SB_1    0x7010