1 files changed, 584 insertions, 0 deletions

diff --git a/hw/usb/bus.c b/hw/usb/bus.c
new file mode 100644
index 0000000000..d3f835895d
--- /dev/null
+++ b/hw/usb/bus.c
@@ -0,0 +1,584 @@
+#include "hw/hw.h"
+#include "hw/usb.h"
+#include "hw/qdev.h"
+#include "sysemu.h"
+#include "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 int usb_qdev_exit(DeviceState *qdev);
+
+static struct BusInfo usb_bus_info = {
+    .name      = "USB",
+    .size      = sizeof(USBBus),
+    .print_dev = usb_bus_dev_print,
+    .get_dev_path = usb_get_dev_path,
+    .get_fw_dev_path = usb_get_fw_dev_path,
+    .props      = (Property[]) {
+        DEFINE_PROP_STRING("port", USBDevice, port_path),
+        DEFINE_PROP_END_OF_LIST()
+    },
+};
+static int next_usb_bus = 0;
+static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
+
+const VMStateDescription vmstate_usb_device = {
+    .name = "USBDevice",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .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, USBBusOps *ops, DeviceState *host)
+{
+    qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
+    bus->ops = ops;
+    bus->busnr = next_usb_bus++;
+    bus->qbus.allow_hotplug = 1; /* Yes, we can */
+    QTAILQ_INIT(&bus->free);
+    QTAILQ_INIT(&bus->used);
+    QTAILQ_INSERT_TAIL(&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 int usb_device_init(USBDevice *dev)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->init) {
+        return klass->init(dev);
+    }
+    return 0;
+}
+
+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);
+    }
+}
+
+int 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) {
+        return klass->handle_control(dev, p, request, value, index, length,
+                                         data);
+    }
+    return -ENOSYS;
+}
+
+int usb_device_handle_data(USBDevice *dev, USBPacket *p)
+{
+    USBDeviceClass *klass = USB_DEVICE_GET_CLASS(dev);
+    if (klass->handle_data) {
+        return klass->handle_data(dev, p);
+    }
+    return -ENOSYS;
+}
+
+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);
+    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);
+    }
+}
+
+static int usb_qdev_init(DeviceState *qdev)
+{
+    USBDevice *dev = USB_DEVICE(qdev);
+    int rc;
+
+    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);
+    rc = usb_claim_port(dev);
+    if (rc != 0) {
+        return rc;
+    }
+    rc = usb_device_init(dev);
+    if (rc != 0) {
+        usb_release_port(dev);
+        return rc;
+    }
+    if (dev->auto_attach) {
+        rc = usb_device_attach(dev);
+        if (rc != 0) {
+            usb_qdev_exit(qdev);
+            return rc;
+        }
+    }
+    return 0;
+}
+
+static int usb_qdev_exit(DeviceState *qdev)
+{
+    USBDevice *dev = USB_DEVICE(qdev);
+
+    if (dev->attached) {
+        usb_device_detach(dev);
+    }
+    usb_device_handle_destroy(dev);
+    if (dev->port) {
+        usb_release_port(dev);
+    }
+    return 0;
+}
+
+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);
+}
+
+USBDevice *usb_create_simple(USBBus *bus, const char *name)
+{
+    USBDevice *dev = usb_create(bus, name);
+    int rc;
+
+    if (!dev) {
+        error_report("Failed to create USB device '%s'", name);
+        return NULL;
+    }
+    rc = qdev_init(&dev->qdev);
+    if (rc < 0) {
+        error_report("Failed to initialize USB device '%s'", name);
+        return NULL;
+    }
+    return dev;
+}
+
+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++;
+}
+
+int usb_register_companion(const char *masterbus, USBPort *ports[],
+                           uint32_t portcount, uint32_t firstport,
+                           void *opaque, USBPortOps *ops, int speedmask)
+{
+    USBBus *bus;
+    int i;
+
+    QTAILQ_FOREACH(bus, &busses, next) {
+        if (strcmp(bus->qbus.name, masterbus) == 0) {
+            break;
+        }
+    }
+
+    if (!bus || !bus->ops->register_companion) {
+        qerror_report(QERR_INVALID_PARAMETER_VALUE, "masterbus",
+                      "an USB masterbus");
+        if (bus) {
+            error_printf_unless_qmp(
+                "USB bus '%s' does not allow companion controllers\n",
+                masterbus);
+        }
+        return -1;
+    }
+
+    for (i = 0; i < portcount; i++) {
+        usb_fill_port(ports[i], opaque, i, ops, speedmask);
+    }
+
+    return bus->ops->register_companion(bus, ports, portcount, firstport);
+}
+
+void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr)
+{
+    if (upstream) {
+        snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
+                 upstream->path, portnr);
+    } else {
+        snprintf(downstream->path, sizeof(downstream->path), "%d", portnr);
+    }
+}
+
+void usb_unregister_port(USBBus *bus, USBPort *port)
+{
+    if (port->dev)
+        qdev_free(&port->dev->qdev);
+    QTAILQ_REMOVE(&bus->free, port, next);
+    bus->nfree--;
+}
+
+int usb_claim_port(USBDevice *dev)
+{
+    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_report("Error: usb port %s (bus %s) not found (in use?)",
+                         dev->port_path, bus->qbus.name);
+            return -1;
+        }
+    } else {
+        if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) {
+            /* Create a new hub and chain it on */
+            usb_create_simple(bus, "usb-hub");
+        }
+        if (bus->nfree == 0) {
+            error_report("Error: tried to attach usb device %s to a bus "
+                         "with no free ports", dev->product_desc);
+            return -1;
+        }
+        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++;
+    return 0;
+}
+
+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++;
+}
+
+int usb_device_attach(USBDevice *dev)
+{
+    USBBus *bus = usb_bus_from_device(dev);
+    USBPort *port = dev->port;
+
+    assert(port != NULL);
+    assert(!dev->attached);
+    trace_usb_port_attach(bus->busnr, port->path);
+
+    if (!(port->speedmask & dev->speedmask)) {
+        error_report("Warning: speed mismatch trying to attach "
+                     "usb device %s to bus %s",
+                     dev->product_desc, bus->qbus.name);
+        return -1;
+    }
+
+    dev->attached++;
+    usb_attach(port);
+
+    return 0;
+}
+
+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;
+
+    qdev_free(&dev->qdev);
+    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);
+    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@%ld/", nr);
+            in++;
+        } else {
+            /* the device itself */
+            pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
+                            qdev_fw_name(qdev), nr);
+            break;
+        }
+    }
+    return fw_path;
+}
+
+void usb_info(Monitor *mon)
+{
+    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;
+    GSList *i;
+    char driver[32];
+    const char *params;
+    int len;
+
+    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 (!f->usbdevice_init) {
+        if (*params) {
+            error_report("usbdevice %s accepts no params", driver);
+            return NULL;
+        }
+        return usb_create_simple(bus, f->name);
+    }
+    return f->usbdevice_init(bus, params);
+}
+
+static void usb_device_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *k = DEVICE_CLASS(klass);
+    k->bus_info = &usb_bus_info;
+    k->init     = usb_qdev_init;
+    k->unplug   = qdev_simple_unplug_cb;
+    k->exit     = usb_qdev_exit;
+}
+
+static 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_device_type_info);
+}
+
+type_init(usb_register_types)