diff options
Diffstat (limited to 'qemu/hw/usb/bus.c')
| -rw-r--r-- | qemu/hw/usb/bus.c | 758 |
1 files changed, 758 insertions, 0 deletions
diff --git a/qemu/hw/usb/bus.c b/qemu/hw/usb/bus.c new file mode 100644 index 000000000..5f39e1e3a --- /dev/null +++ b/qemu/hw/usb/bus.c @@ -0,0 +1,758 @@ +#include "hw/hw.h" +#include "hw/usb.h" +#include "hw/qdev.h" +#include "qemu/error-report.h" +#include "sysemu/sysemu.h" +#include "monitor/monitor.h" +#include "trace.h" + +static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent); + +static char *usb_get_dev_path(DeviceState *dev); +static char *usb_get_fw_dev_path(DeviceState *qdev); +static void usb_qdev_unrealize(DeviceState *qdev, Error **errp); + +static Property usb_props[] = { + DEFINE_PROP_STRING("port", USBDevice, port_path), + DEFINE_PROP_STRING("serial", USBDevice, serial), + DEFINE_PROP_BIT("full-path", USBDevice, flags, + USB_DEV_FLAG_FULL_PATH, true), + DEFINE_PROP_BIT("msos-desc", USBDevice, flags, + USB_DEV_FLAG_MSOS_DESC_ENABLE, true), + DEFINE_PROP_END_OF_LIST() +}; + +static void usb_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(klass); + + k->print_dev = usb_bus_dev_print; + k->get_dev_path = usb_get_dev_path; + k->get_fw_dev_path = usb_get_fw_dev_path; + hc->unplug = qdev_simple_device_unplug_cb; +} + +static const TypeInfo usb_bus_info = { + .name = TYPE_USB_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(USBBus), + .class_init = usb_bus_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_HOTPLUG_HANDLER }, + { } + } +}; + +static int next_usb_bus = 0; +static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses); + +static int usb_device_post_load(void *opaque, int version_id) +{ + USBDevice *dev = opaque; + + if (dev->state == USB_STATE_NOTATTACHED) { + dev->attached = 0; + } else { + dev->attached = 1; + } + if (dev->setup_index < 0 || + dev->setup_len < 0 || + dev->setup_index > dev->setup_len || + dev->setup_len > sizeof(dev->data_buf)) { + return -EINVAL; + } + return 0; +} + +const VMStateDescription vmstate_usb_device = { + .name = "USBDevice", + .version_id = 1, + .minimum_version_id = 1, + .post_load = usb_device_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT8(addr, USBDevice), + VMSTATE_INT32(state, USBDevice), + VMSTATE_INT32(remote_wakeup, USBDevice), + VMSTATE_INT32(setup_state, USBDevice), + VMSTATE_INT32(setup_len, USBDevice), + VMSTATE_INT32(setup_index, USBDevice), + VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8), + VMSTATE_END_OF_LIST(), + } +}; + +void usb_bus_new(USBBus *bus, size_t bus_size, + USBBusOps *ops, DeviceState *host) +{ + qbus_create_inplace(bus, bus_size, TYPE_USB_BUS, host, NULL); + qbus_set_bus_hotplug_handler(BUS(bus), &error_abort); + bus->ops = ops; + bus->busnr = next_usb_bus++; + QTAILQ_INIT(&bus->free); + QTAILQ_INIT(&bus->used); + QTAILQ_INSERT_TAIL(&busses, bus, next); +} + +void usb_bus_release(USBBus *bus) +{ + assert(next_usb_bus > 0); + + QTAILQ_REMOVE(&busses, bus, next); +} + +USBBus *usb_bus_find(int busnr) +{ + USBBus *bus; + + if (-1 == busnr) + return QTAILQ_FIRST(&busses); + QTAILQ_FOREACH(bus, &busses, next) { + if (bus->busnr == busnr) + return bus; + } + return NULL; +} + +static void usb_device_realize(USBDevice *dev, Error **errp) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + + if (klass->realize) { + klass->realize(dev, errp); + } +} + +USBDevice *usb_device_find_device(USBDevice *dev, uint8_t addr) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->find_device) { + return klass->find_device(dev, addr); + } + return NULL; +} + +static void usb_device_handle_destroy(USBDevice *dev) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->handle_destroy) { + klass->handle_destroy(dev); + } +} + +void usb_device_cancel_packet(USBDevice *dev, USBPacket *p) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->cancel_packet) { + klass->cancel_packet(dev, p); + } +} + +void usb_device_handle_attach(USBDevice *dev) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->handle_attach) { + klass->handle_attach(dev); + } +} + +void usb_device_handle_reset(USBDevice *dev) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->handle_reset) { + klass->handle_reset(dev); + } +} + +void usb_device_handle_control(USBDevice *dev, USBPacket *p, int request, + int value, int index, int length, uint8_t *data) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->handle_control) { + klass->handle_control(dev, p, request, value, index, length, data); + } +} + +void usb_device_handle_data(USBDevice *dev, USBPacket *p) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->handle_data) { + klass->handle_data(dev, p); + } +} + +const char *usb_device_get_product_desc(USBDevice *dev) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + return klass->product_desc; +} + +const USBDesc *usb_device_get_usb_desc(USBDevice *dev) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (dev->usb_desc) { + return dev->usb_desc; + } + return klass->usb_desc; +} + +void usb_device_set_interface(USBDevice *dev, int interface, + int alt_old, int alt_new) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->set_interface) { + klass->set_interface(dev, interface, alt_old, alt_new); + } +} + +void usb_device_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->flush_ep_queue) { + klass->flush_ep_queue(dev, ep); + } +} + +void usb_device_ep_stopped(USBDevice *dev, USBEndpoint *ep) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->ep_stopped) { + klass->ep_stopped(dev, ep); + } +} + +int usb_device_alloc_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps, + int streams) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->alloc_streams) { + return klass->alloc_streams(dev, eps, nr_eps, streams); + } + return 0; +} + +void usb_device_free_streams(USBDevice *dev, USBEndpoint **eps, int nr_eps) +{ + USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev); + if (klass->free_streams) { + klass->free_streams(dev, eps, nr_eps); + } +} + +static void usb_qdev_realize(DeviceState *qdev, Error **errp) +{ + USBDevice *dev = USB_DEVICE(qdev); + Error *local_err = NULL; + + pstrcpy(dev->product_desc, sizeof(dev->product_desc), + usb_device_get_product_desc(dev)); + dev->auto_attach = 1; + QLIST_INIT(&dev->strings); + usb_ep_init(dev); + + usb_claim_port(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + usb_device_realize(dev, &local_err); + if (local_err) { + usb_release_port(dev); + error_propagate(errp, local_err); + return; + } + + if (dev->auto_attach) { + usb_device_attach(dev, &local_err); + if (local_err) { + usb_qdev_unrealize(qdev, NULL); + error_propagate(errp, local_err); + return; + } + } +} + +static void usb_qdev_unrealize(DeviceState *qdev, Error **errp) +{ + USBDevice *dev = USB_DEVICE(qdev); + + if (dev->attached) { + usb_device_detach(dev); + } + usb_device_handle_destroy(dev); + if (dev->port) { + usb_release_port(dev); + } +} + +typedef struct LegacyUSBFactory +{ + const char *name; + const char *usbdevice_name; + USBDevice *(*usbdevice_init)(USBBus *bus, const char *params); +} LegacyUSBFactory; + +static GSList *legacy_usb_factory; + +void usb_legacy_register(const char *typename, const char *usbdevice_name, + USBDevice *(*usbdevice_init)(USBBus *bus, + const char *params)) +{ + if (usbdevice_name) { + LegacyUSBFactory *f = g_malloc0(sizeof(*f)); + f->name = typename; + f->usbdevice_name = usbdevice_name; + f->usbdevice_init = usbdevice_init; + legacy_usb_factory = g_slist_append(legacy_usb_factory, f); + } +} + +USBDevice *usb_create(USBBus *bus, const char *name) +{ + DeviceState *dev; + + dev = qdev_create(&bus->qbus, name); + return USB_DEVICE(dev); +} + +static USBDevice *usb_try_create_simple(USBBus *bus, const char *name, + Error **errp) +{ + Error *err = NULL; + USBDevice *dev; + + dev = USB_DEVICE(qdev_try_create(&bus->qbus, name)); + if (!dev) { + error_setg(errp, "Failed to create USB device '%s'", name); + return NULL; + } + object_property_set_bool(OBJECT(dev), true, "realized", &err); + if (err) { + error_setg(errp, "Failed to initialize USB device '%s': %s", + name, error_get_pretty(err)); + error_free(err); + object_unparent(OBJECT(dev)); + return NULL; + } + return dev; +} + +USBDevice *usb_create_simple(USBBus *bus, const char *name) +{ + return usb_try_create_simple(bus, name, &error_abort); +} + +static void usb_fill_port(USBPort *port, void *opaque, int index, + USBPortOps *ops, int speedmask) +{ + port->opaque = opaque; + port->index = index; + port->ops = ops; + port->speedmask = speedmask; + usb_port_location(port, NULL, index + 1); +} + +void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index, + USBPortOps *ops, int speedmask) +{ + usb_fill_port(port, opaque, index, ops, speedmask); + QTAILQ_INSERT_TAIL(&bus->free, port, next); + bus->nfree++; +} + +void usb_register_companion(const char *masterbus, USBPort *ports[], + uint32_t portcount, uint32_t firstport, + void *opaque, USBPortOps *ops, int speedmask, + Error **errp) +{ + USBBus *bus; + int i; + + QTAILQ_FOREACH(bus, &busses, next) { + if (strcmp(bus->qbus.name, masterbus) == 0) { + break; + } + } + + if (!bus) { + error_setg(errp, "USB bus '%s' not found", masterbus); + return; + } + if (!bus->ops->register_companion) { + error_setg(errp, "Can't use USB bus '%s' as masterbus," + " it doesn't support companion controllers", + masterbus); + return; + } + + for (i = 0; i < portcount; i++) { + usb_fill_port(ports[i], opaque, i, ops, speedmask); + } + + bus->ops->register_companion(bus, ports, portcount, firstport, errp); +} + +void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr) +{ + if (upstream) { + snprintf(downstream->path, sizeof(downstream->path), "%s.%d", + upstream->path, portnr); + downstream->hubcount = upstream->hubcount + 1; + } else { + snprintf(downstream->path, sizeof(downstream->path), "%d", portnr); + downstream->hubcount = 0; + } +} + +void usb_unregister_port(USBBus *bus, USBPort *port) +{ + if (port->dev) { + object_unparent(OBJECT(port->dev)); + } + QTAILQ_REMOVE(&bus->free, port, next); + bus->nfree--; +} + +void usb_claim_port(USBDevice *dev, Error **errp) +{ + USBBus *bus = usb_bus_from_device(dev); + USBPort *port; + + assert(dev->port == NULL); + + if (dev->port_path) { + QTAILQ_FOREACH(port, &bus->free, next) { + if (strcmp(port->path, dev->port_path) == 0) { + break; + } + } + if (port == NULL) { + error_setg(errp, "usb port %s (bus %s) not found (in use?)", + dev->port_path, bus->qbus.name); + return; + } + } else { + if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) { + /* Create a new hub and chain it on */ + usb_try_create_simple(bus, "usb-hub", NULL); + } + if (bus->nfree == 0) { + error_setg(errp, "tried to attach usb device %s to a bus " + "with no free ports", dev->product_desc); + return; + } + port = QTAILQ_FIRST(&bus->free); + } + trace_usb_port_claim(bus->busnr, port->path); + + QTAILQ_REMOVE(&bus->free, port, next); + bus->nfree--; + + dev->port = port; + port->dev = dev; + + QTAILQ_INSERT_TAIL(&bus->used, port, next); + bus->nused++; +} + +void usb_release_port(USBDevice *dev) +{ + USBBus *bus = usb_bus_from_device(dev); + USBPort *port = dev->port; + + assert(port != NULL); + trace_usb_port_release(bus->busnr, port->path); + + QTAILQ_REMOVE(&bus->used, port, next); + bus->nused--; + + dev->port = NULL; + port->dev = NULL; + + QTAILQ_INSERT_TAIL(&bus->free, port, next); + bus->nfree++; +} + +static void usb_mask_to_str(char *dest, size_t size, + unsigned int speedmask) +{ + static const struct { + unsigned int mask; + const char *name; + } speeds[] = { + { .mask = USB_SPEED_MASK_FULL, .name = "full" }, + { .mask = USB_SPEED_MASK_HIGH, .name = "high" }, + { .mask = USB_SPEED_MASK_SUPER, .name = "super" }, + }; + int i, pos = 0; + + for (i = 0; i < ARRAY_SIZE(speeds); i++) { + if (speeds[i].mask & speedmask) { + pos += snprintf(dest + pos, size - pos, "%s%s", + pos ? "+" : "", + speeds[i].name); + } + } +} + +void usb_check_attach(USBDevice *dev, Error **errp) +{ + USBBus *bus = usb_bus_from_device(dev); + USBPort *port = dev->port; + char devspeed[32], portspeed[32]; + + assert(port != NULL); + assert(!dev->attached); + usb_mask_to_str(devspeed, sizeof(devspeed), dev->speedmask); + usb_mask_to_str(portspeed, sizeof(portspeed), port->speedmask); + trace_usb_port_attach(bus->busnr, port->path, + devspeed, portspeed); + + if (!(port->speedmask & dev->speedmask)) { + error_setg(errp, "Warning: speed mismatch trying to attach" + " usb device \"%s\" (%s speed)" + " to bus \"%s\", port \"%s\" (%s speed)", + dev->product_desc, devspeed, + bus->qbus.name, port->path, portspeed); + return; + } +} + +void usb_device_attach(USBDevice *dev, Error **errp) +{ + USBPort *port = dev->port; + Error *local_err = NULL; + + usb_check_attach(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + dev->attached++; + usb_attach(port); +} + +int usb_device_detach(USBDevice *dev) +{ + USBBus *bus = usb_bus_from_device(dev); + USBPort *port = dev->port; + + assert(port != NULL); + assert(dev->attached); + trace_usb_port_detach(bus->busnr, port->path); + + usb_detach(port); + dev->attached--; + return 0; +} + +int usb_device_delete_addr(int busnr, int addr) +{ + USBBus *bus; + USBPort *port; + USBDevice *dev; + + bus = usb_bus_find(busnr); + if (!bus) + return -1; + + QTAILQ_FOREACH(port, &bus->used, next) { + if (port->dev->addr == addr) + break; + } + if (!port) + return -1; + dev = port->dev; + + object_unparent(OBJECT(dev)); + return 0; +} + +static const char *usb_speed(unsigned int speed) +{ + static const char *txt[] = { + [ USB_SPEED_LOW ] = "1.5", + [ USB_SPEED_FULL ] = "12", + [ USB_SPEED_HIGH ] = "480", + [ USB_SPEED_SUPER ] = "5000", + }; + if (speed >= ARRAY_SIZE(txt)) + return "?"; + return txt[speed]; +} + +static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent) +{ + USBDevice *dev = USB_DEVICE(qdev); + USBBus *bus = usb_bus_from_device(dev); + + monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n", + indent, "", bus->busnr, dev->addr, + dev->port ? dev->port->path : "-", + usb_speed(dev->speed), dev->product_desc, + dev->attached ? ", attached" : ""); +} + +static char *usb_get_dev_path(DeviceState *qdev) +{ + USBDevice *dev = USB_DEVICE(qdev); + DeviceState *hcd = qdev->parent_bus->parent; + char *id = NULL; + + if (dev->flags & (1 << USB_DEV_FLAG_FULL_PATH)) { + id = qdev_get_dev_path(hcd); + } + if (id) { + char *ret = g_strdup_printf("%s/%s", id, dev->port->path); + g_free(id); + return ret; + } else { + return g_strdup(dev->port->path); + } +} + +static char *usb_get_fw_dev_path(DeviceState *qdev) +{ + USBDevice *dev = USB_DEVICE(qdev); + char *fw_path, *in; + ssize_t pos = 0, fw_len; + long nr; + + fw_len = 32 + strlen(dev->port->path) * 6; + fw_path = g_malloc(fw_len); + in = dev->port->path; + while (fw_len - pos > 0) { + nr = strtol(in, &in, 10); + if (in[0] == '.') { + /* some hub between root port and device */ + pos += snprintf(fw_path + pos, fw_len - pos, "hub@%lx/", nr); + in++; + } else { + /* the device itself */ + pos += snprintf(fw_path + pos, fw_len - pos, "%s@%lx", + qdev_fw_name(qdev), nr); + break; + } + } + return fw_path; +} + +void hmp_info_usb(Monitor *mon, const QDict *qdict) +{ + USBBus *bus; + USBDevice *dev; + USBPort *port; + + if (QTAILQ_EMPTY(&busses)) { + monitor_printf(mon, "USB support not enabled\n"); + return; + } + + QTAILQ_FOREACH(bus, &busses, next) { + QTAILQ_FOREACH(port, &bus->used, next) { + dev = port->dev; + if (!dev) + continue; + monitor_printf(mon, " Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n", + bus->busnr, dev->addr, port->path, usb_speed(dev->speed), + dev->product_desc); + } + } +} + +/* handle legacy -usbdevice cmd line option */ +USBDevice *usbdevice_create(const char *cmdline) +{ + USBBus *bus = usb_bus_find(-1 /* any */); + LegacyUSBFactory *f = NULL; + Error *err = NULL; + GSList *i; + char driver[32]; + const char *params; + int len; + USBDevice *dev; + + params = strchr(cmdline,':'); + if (params) { + params++; + len = params - cmdline; + if (len > sizeof(driver)) + len = sizeof(driver); + pstrcpy(driver, len, cmdline); + } else { + params = ""; + pstrcpy(driver, sizeof(driver), cmdline); + } + + for (i = legacy_usb_factory; i; i = i->next) { + f = i->data; + if (strcmp(f->usbdevice_name, driver) == 0) { + break; + } + } + if (i == NULL) { +#if 0 + /* no error because some drivers are not converted (yet) */ + error_report("usbdevice %s not found", driver); +#endif + return NULL; + } + + if (!bus) { + error_report("Error: no usb bus to attach usbdevice %s, " + "please try -machine usb=on and check that " + "the machine model supports USB", driver); + return NULL; + } + + if (f->usbdevice_init) { + dev = f->usbdevice_init(bus, params); + } else { + if (*params) { + error_report("usbdevice %s accepts no params", driver); + return NULL; + } + dev = usb_create(bus, f->name); + } + if (!dev) { + error_report("Failed to create USB device '%s'", f->name); + return NULL; + } + object_property_set_bool(OBJECT(dev), true, "realized", &err); + if (err) { + error_report("Failed to initialize USB device '%s': %s", + f->name, error_get_pretty(err)); + error_free(err); + object_unparent(OBJECT(dev)); + return NULL; + } + return dev; +} + +static void usb_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *k = DEVICE_CLASS(klass); + k->bus_type = TYPE_USB_BUS; + k->realize = usb_qdev_realize; + k->unrealize = usb_qdev_unrealize; + k->props = usb_props; +} + +static const TypeInfo usb_device_type_info = { + .name = TYPE_USB_DEVICE, + .parent = TYPE_DEVICE, + .instance_size = sizeof(USBDevice), + .abstract = true, + .class_size = sizeof(USBDeviceClass), + .class_init = usb_device_class_init, +}; + +static void usb_register_types(void) +{ + type_register_static(&usb_bus_info); + type_register_static(&usb_device_type_info); +} + +type_init(usb_register_types) |