root / hw / usb-bus.c @ 2afee49f
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#include "hw.h" |
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#include "usb.h" |
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#include "qdev.h" |
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#include "sysemu.h" |
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#include "monitor.h" |
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#include "trace.h" |
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|
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static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent); |
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|
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static char *usb_get_dev_path(DeviceState *dev); |
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static char *usb_get_fw_dev_path(DeviceState *qdev); |
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static int usb_qdev_exit(DeviceState *qdev); |
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|
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static struct BusInfo usb_bus_info = { |
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.name = "USB",
|
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.size = sizeof(USBBus),
|
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.print_dev = usb_bus_dev_print, |
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.get_dev_path = usb_get_dev_path, |
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.get_fw_dev_path = usb_get_fw_dev_path, |
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.props = (Property[]) { |
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DEFINE_PROP_STRING("port", USBDevice, port_path),
|
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DEFINE_PROP_END_OF_LIST() |
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}, |
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}; |
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static int next_usb_bus = 0; |
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static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
|
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|
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const VMStateDescription vmstate_usb_device = {
|
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.name = "USBDevice",
|
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.version_id = 1,
|
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.minimum_version_id = 1,
|
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.fields = (VMStateField []) { |
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VMSTATE_UINT8(addr, USBDevice), |
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VMSTATE_INT32(state, USBDevice), |
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VMSTATE_INT32(remote_wakeup, USBDevice), |
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VMSTATE_INT32(setup_state, USBDevice), |
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VMSTATE_INT32(setup_len, USBDevice), |
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VMSTATE_INT32(setup_index, USBDevice), |
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VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8),
|
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VMSTATE_END_OF_LIST(), |
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} |
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}; |
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|
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void usb_bus_new(USBBus *bus, USBBusOps *ops, DeviceState *host)
|
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{ |
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qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
|
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bus->ops = ops; |
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bus->busnr = next_usb_bus++; |
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bus->qbus.allow_hotplug = 1; /* Yes, we can */ |
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QTAILQ_INIT(&bus->free); |
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QTAILQ_INIT(&bus->used); |
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QTAILQ_INSERT_TAIL(&busses, bus, next); |
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} |
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|
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USBBus *usb_bus_find(int busnr)
|
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{ |
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USBBus *bus; |
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|
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if (-1 == busnr) |
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return QTAILQ_FIRST(&busses);
|
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QTAILQ_FOREACH(bus, &busses, next) { |
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if (bus->busnr == busnr)
|
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return bus;
|
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} |
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return NULL; |
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} |
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|
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static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base) |
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{ |
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USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
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USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base); |
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int rc;
|
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|
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pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
|
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dev->info = info; |
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dev->auto_attach = 1;
|
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QLIST_INIT(&dev->strings); |
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rc = usb_claim_port(dev); |
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if (rc != 0) { |
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return rc;
|
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} |
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rc = dev->info->init(dev); |
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if (rc != 0) { |
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usb_release_port(dev); |
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return rc;
|
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} |
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if (dev->auto_attach) {
|
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rc = usb_device_attach(dev); |
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if (rc != 0) { |
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usb_qdev_exit(qdev); |
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return rc;
|
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} |
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} |
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return 0; |
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} |
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|
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static int usb_qdev_exit(DeviceState *qdev) |
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{ |
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USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
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|
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if (dev->attached) {
|
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usb_device_detach(dev); |
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} |
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if (dev->info->handle_destroy) {
|
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dev->info->handle_destroy(dev); |
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} |
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if (dev->port) {
|
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usb_release_port(dev); |
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} |
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return 0; |
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} |
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|
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void usb_qdev_register(USBDeviceInfo *info)
|
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{ |
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info->qdev.bus_info = &usb_bus_info; |
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info->qdev.init = usb_qdev_init; |
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info->qdev.unplug = qdev_simple_unplug_cb; |
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info->qdev.exit = usb_qdev_exit; |
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qdev_register(&info->qdev); |
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} |
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|
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void usb_qdev_register_many(USBDeviceInfo *info)
|
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{ |
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while (info->qdev.name) {
|
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usb_qdev_register(info); |
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info++; |
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} |
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} |
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|
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USBDevice *usb_create(USBBus *bus, const char *name) |
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{ |
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DeviceState *dev; |
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|
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#if 1 |
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/* temporary stopgap until all usb is properly qdev-ified */
|
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if (!bus) {
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bus = usb_bus_find(-1);
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if (!bus)
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return NULL; |
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error_report("%s: no bus specified, using \"%s\" for \"%s\"\n",
|
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__FUNCTION__, bus->qbus.name, name); |
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} |
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#endif
|
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|
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dev = qdev_create(&bus->qbus, name); |
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return DO_UPCAST(USBDevice, qdev, dev);
|
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} |
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|
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USBDevice *usb_create_simple(USBBus *bus, const char *name) |
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{ |
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USBDevice *dev = usb_create(bus, name); |
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int rc;
|
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|
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if (!dev) {
|
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error_report("Failed to create USB device '%s'\n", name);
|
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return NULL; |
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} |
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rc = qdev_init(&dev->qdev); |
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if (rc < 0) { |
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error_report("Failed to initialize USB device '%s'\n", name);
|
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return NULL; |
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} |
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return dev;
|
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} |
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|
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static void usb_fill_port(USBPort *port, void *opaque, int index, |
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USBPortOps *ops, int speedmask)
|
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{ |
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port->opaque = opaque; |
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port->index = index; |
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port->ops = ops; |
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port->speedmask = speedmask; |
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usb_port_location(port, NULL, index + 1); |
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} |
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|
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void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index, |
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USBPortOps *ops, int speedmask)
|
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{ |
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usb_fill_port(port, opaque, index, ops, speedmask); |
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QTAILQ_INSERT_TAIL(&bus->free, port, next); |
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bus->nfree++; |
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} |
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|
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int usb_register_companion(const char *masterbus, USBPort *ports[], |
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uint32_t portcount, uint32_t firstport, |
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void *opaque, USBPortOps *ops, int speedmask) |
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{ |
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USBBus *bus; |
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int i;
|
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|
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QTAILQ_FOREACH(bus, &busses, next) { |
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if (strcmp(bus->qbus.name, masterbus) == 0) { |
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break;
|
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} |
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} |
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|
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if (!bus || !bus->ops->register_companion) {
|
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qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
|
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"an USB masterbus");
|
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if (bus) {
|
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error_printf_unless_qmp( |
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"USB bus '%s' does not allow companion controllers\n",
|
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masterbus); |
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} |
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return -1; |
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} |
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|
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for (i = 0; i < portcount; i++) { |
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usb_fill_port(ports[i], opaque, i, ops, speedmask); |
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} |
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|
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return bus->ops->register_companion(bus, ports, portcount, firstport);
|
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} |
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|
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void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr) |
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{ |
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if (upstream) {
|
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snprintf(downstream->path, sizeof(downstream->path), "%s.%d", |
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upstream->path, portnr); |
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} else {
|
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snprintf(downstream->path, sizeof(downstream->path), "%d", portnr); |
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} |
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} |
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|
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void usb_unregister_port(USBBus *bus, USBPort *port)
|
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{ |
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if (port->dev)
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qdev_free(&port->dev->qdev); |
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QTAILQ_REMOVE(&bus->free, port, next); |
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bus->nfree--; |
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} |
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|
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int usb_claim_port(USBDevice *dev)
|
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{ |
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USBBus *bus = usb_bus_from_device(dev); |
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USBPort *port; |
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|
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assert(dev->port == NULL);
|
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|
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if (dev->port_path) {
|
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QTAILQ_FOREACH(port, &bus->free, next) { |
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if (strcmp(port->path, dev->port_path) == 0) { |
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break;
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} |
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} |
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if (port == NULL) { |
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error_report("Error: usb port %s (bus %s) not found (in use?)\n",
|
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dev->port_path, bus->qbus.name); |
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return -1; |
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} |
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} else {
|
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if (bus->nfree == 1 && strcmp(dev->qdev.info->name, "usb-hub") != 0) { |
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/* Create a new hub and chain it on */
|
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usb_create_simple(bus, "usb-hub");
|
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} |
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if (bus->nfree == 0) { |
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error_report("Error: tried to attach usb device %s to a bus "
|
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"with no free ports\n", dev->product_desc);
|
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return -1; |
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} |
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port = QTAILQ_FIRST(&bus->free); |
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} |
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trace_usb_port_claim(bus->busnr, port->path); |
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|
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QTAILQ_REMOVE(&bus->free, port, next); |
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bus->nfree--; |
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|
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dev->port = port; |
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port->dev = dev; |
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|
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QTAILQ_INSERT_TAIL(&bus->used, port, next); |
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bus->nused++; |
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return 0; |
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} |
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|
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void usb_release_port(USBDevice *dev)
|
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{ |
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USBBus *bus = usb_bus_from_device(dev); |
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USBPort *port = dev->port; |
280 |
|
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assert(port != NULL);
|
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trace_usb_port_release(bus->busnr, port->path); |
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|
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QTAILQ_REMOVE(&bus->used, port, next); |
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bus->nused--; |
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|
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dev->port = NULL;
|
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port->dev = NULL;
|
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|
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QTAILQ_INSERT_TAIL(&bus->free, port, next); |
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bus->nfree++; |
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} |
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|
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int usb_device_attach(USBDevice *dev)
|
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{ |
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USBBus *bus = usb_bus_from_device(dev); |
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USBPort *port = dev->port; |
298 |
|
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assert(port != NULL);
|
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assert(!dev->attached); |
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trace_usb_port_attach(bus->busnr, port->path); |
302 |
|
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if (!(port->speedmask & dev->speedmask)) {
|
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error_report("Warning: speed mismatch trying to attach "
|
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"usb device %s to bus %s\n",
|
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dev->product_desc, bus->qbus.name); |
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return -1; |
308 |
} |
309 |
|
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dev->attached++; |
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usb_attach(port); |
312 |
|
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return 0; |
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} |
315 |
|
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int usb_device_detach(USBDevice *dev)
|
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{ |
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USBBus *bus = usb_bus_from_device(dev); |
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USBPort *port = dev->port; |
320 |
|
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assert(port != NULL);
|
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assert(dev->attached); |
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trace_usb_port_detach(bus->busnr, port->path); |
324 |
|
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usb_detach(port); |
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dev->attached--; |
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return 0; |
328 |
} |
329 |
|
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int usb_device_delete_addr(int busnr, int addr) |
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{ |
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USBBus *bus; |
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USBPort *port; |
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USBDevice *dev; |
335 |
|
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bus = usb_bus_find(busnr); |
337 |
if (!bus)
|
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return -1; |
339 |
|
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QTAILQ_FOREACH(port, &bus->used, next) { |
341 |
if (port->dev->addr == addr)
|
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break;
|
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} |
344 |
if (!port)
|
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return -1; |
346 |
dev = port->dev; |
347 |
|
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qdev_free(&dev->qdev); |
349 |
return 0; |
350 |
} |
351 |
|
352 |
static const char *usb_speed(unsigned int speed) |
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{ |
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static const char *txt[] = { |
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[ USB_SPEED_LOW ] = "1.5",
|
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[ USB_SPEED_FULL ] = "12",
|
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[ USB_SPEED_HIGH ] = "480",
|
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[ USB_SPEED_SUPER ] = "5000",
|
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}; |
360 |
if (speed >= ARRAY_SIZE(txt))
|
361 |
return "?"; |
362 |
return txt[speed];
|
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} |
364 |
|
365 |
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent) |
366 |
{ |
367 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
368 |
USBBus *bus = usb_bus_from_device(dev); |
369 |
|
370 |
monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
|
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indent, "", bus->busnr, dev->addr,
|
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dev->port ? dev->port->path : "-",
|
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usb_speed(dev->speed), dev->product_desc, |
374 |
dev->attached ? ", attached" : ""); |
375 |
} |
376 |
|
377 |
static char *usb_get_dev_path(DeviceState *qdev) |
378 |
{ |
379 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
380 |
return g_strdup(dev->port->path);
|
381 |
} |
382 |
|
383 |
static char *usb_get_fw_dev_path(DeviceState *qdev) |
384 |
{ |
385 |
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev); |
386 |
char *fw_path, *in;
|
387 |
ssize_t pos = 0, fw_len;
|
388 |
long nr;
|
389 |
|
390 |
fw_len = 32 + strlen(dev->port->path) * 6; |
391 |
fw_path = g_malloc(fw_len); |
392 |
in = dev->port->path; |
393 |
while (fw_len - pos > 0) { |
394 |
nr = strtol(in, &in, 10);
|
395 |
if (in[0] == '.') { |
396 |
/* some hub between root port and device */
|
397 |
pos += snprintf(fw_path + pos, fw_len - pos, "hub@%ld/", nr);
|
398 |
in++; |
399 |
} else {
|
400 |
/* the device itself */
|
401 |
pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
|
402 |
qdev_fw_name(qdev), nr); |
403 |
break;
|
404 |
} |
405 |
} |
406 |
return fw_path;
|
407 |
} |
408 |
|
409 |
void usb_info(Monitor *mon)
|
410 |
{ |
411 |
USBBus *bus; |
412 |
USBDevice *dev; |
413 |
USBPort *port; |
414 |
|
415 |
if (QTAILQ_EMPTY(&busses)) {
|
416 |
monitor_printf(mon, "USB support not enabled\n");
|
417 |
return;
|
418 |
} |
419 |
|
420 |
QTAILQ_FOREACH(bus, &busses, next) { |
421 |
QTAILQ_FOREACH(port, &bus->used, next) { |
422 |
dev = port->dev; |
423 |
if (!dev)
|
424 |
continue;
|
425 |
monitor_printf(mon, " Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n",
|
426 |
bus->busnr, dev->addr, port->path, usb_speed(dev->speed), |
427 |
dev->product_desc); |
428 |
} |
429 |
} |
430 |
} |
431 |
|
432 |
/* handle legacy -usbdevice cmd line option */
|
433 |
USBDevice *usbdevice_create(const char *cmdline) |
434 |
{ |
435 |
USBBus *bus = usb_bus_find(-1 /* any */); |
436 |
DeviceInfo *info; |
437 |
USBDeviceInfo *usb; |
438 |
char driver[32]; |
439 |
const char *params; |
440 |
int len;
|
441 |
|
442 |
params = strchr(cmdline,':');
|
443 |
if (params) {
|
444 |
params++; |
445 |
len = params - cmdline; |
446 |
if (len > sizeof(driver)) |
447 |
len = sizeof(driver);
|
448 |
pstrcpy(driver, len, cmdline); |
449 |
} else {
|
450 |
params = "";
|
451 |
pstrcpy(driver, sizeof(driver), cmdline);
|
452 |
} |
453 |
|
454 |
for (info = device_info_list; info != NULL; info = info->next) { |
455 |
if (info->bus_info != &usb_bus_info)
|
456 |
continue;
|
457 |
usb = DO_UPCAST(USBDeviceInfo, qdev, info); |
458 |
if (usb->usbdevice_name == NULL) |
459 |
continue;
|
460 |
if (strcmp(usb->usbdevice_name, driver) != 0) |
461 |
continue;
|
462 |
break;
|
463 |
} |
464 |
if (info == NULL) { |
465 |
#if 0
|
466 |
/* no error because some drivers are not converted (yet) */
|
467 |
error_report("usbdevice %s not found", driver);
|
468 |
#endif
|
469 |
return NULL; |
470 |
} |
471 |
|
472 |
if (!usb->usbdevice_init) {
|
473 |
if (*params) {
|
474 |
error_report("usbdevice %s accepts no params", driver);
|
475 |
return NULL; |
476 |
} |
477 |
return usb_create_simple(bus, usb->qdev.name);
|
478 |
} |
479 |
return usb->usbdevice_init(params);
|
480 |
} |