309 lines
7.3 KiB
C
309 lines
7.3 KiB
C
#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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static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
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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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};
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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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void usb_bus_new(USBBus *bus, 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->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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USBBus *usb_bus_find(int busnr)
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{
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USBBus *bus;
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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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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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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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rc = dev->info->init(dev);
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if (rc == 0 && dev->auto_attach)
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usb_device_attach(dev);
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return rc;
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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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usb_device_detach(dev);
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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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return 0;
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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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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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USBDevice *usb_create(USBBus *bus, const char *name)
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{
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DeviceState *dev;
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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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fprintf(stderr, "%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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dev = qdev_create(&bus->qbus, name);
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return DO_UPCAST(USBDevice, qdev, dev);
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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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if (!dev) {
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hw_error("Failed to create USB device '%s'\n", name);
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}
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qdev_init_nofail(&dev->qdev);
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return dev;
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}
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void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
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usb_attachfn attach)
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{
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port->opaque = opaque;
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port->index = index;
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port->attach = attach;
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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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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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static void do_attach(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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if (dev->attached) {
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fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
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dev->product_desc);
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return;
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}
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dev->attached++;
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port = QTAILQ_FIRST(&bus->free);
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QTAILQ_REMOVE(&bus->free, port, next);
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bus->nfree--;
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usb_attach(port, dev);
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QTAILQ_INSERT_TAIL(&bus->used, port, next);
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bus->nused++;
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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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if (bus->nfree == 1) {
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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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do_attach(dev);
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return 0;
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}
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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;
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if (!dev->attached) {
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fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
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dev->product_desc);
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return -1;
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}
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dev->attached--;
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QTAILQ_FOREACH(port, &bus->used, next) {
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if (port->dev == dev)
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break;
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}
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assert(port != NULL);
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QTAILQ_REMOVE(&bus->used, port, next);
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bus->nused--;
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usb_attach(port, NULL);
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QTAILQ_INSERT_TAIL(&bus->free, port, next);
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bus->nfree++;
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return 0;
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}
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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;
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bus = usb_bus_find(busnr);
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if (!bus)
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return -1;
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QTAILQ_FOREACH(port, &bus->used, next) {
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if (port->dev->addr == addr)
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break;
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}
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if (!port)
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return -1;
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dev = port->dev;
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qdev_free(&dev->qdev);
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return 0;
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}
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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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};
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if (speed >= ARRAY_SIZE(txt))
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return "?";
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return txt[speed];
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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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USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
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USBBus *bus = usb_bus_from_device(dev);
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monitor_printf(mon, "%*saddr %d.%d, speed %s, name %s%s\n",
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indent, "", bus->busnr, dev->addr,
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usb_speed(dev->speed), dev->product_desc,
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dev->attached ? ", attached" : "");
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}
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void usb_info(Monitor *mon)
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{
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USBBus *bus;
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USBDevice *dev;
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USBPort *port;
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if (QTAILQ_EMPTY(&busses)) {
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monitor_printf(mon, "USB support not enabled\n");
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return;
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}
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QTAILQ_FOREACH(bus, &busses, next) {
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QTAILQ_FOREACH(port, &bus->used, next) {
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dev = port->dev;
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if (!dev)
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continue;
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monitor_printf(mon, " Device %d.%d, Speed %s Mb/s, Product %s\n",
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bus->busnr, dev->addr, usb_speed(dev->speed),
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dev->product_desc);
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}
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}
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}
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/* handle legacy -usbdevice cmd line option */
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USBDevice *usbdevice_create(const char *cmdline)
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{
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USBBus *bus = usb_bus_find(-1 /* any */);
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DeviceInfo *info;
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USBDeviceInfo *usb;
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char driver[32];
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const char *params;
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int len;
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params = strchr(cmdline,':');
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if (params) {
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params++;
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len = params - cmdline;
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if (len > sizeof(driver))
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len = sizeof(driver);
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pstrcpy(driver, len, cmdline);
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} else {
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params = "";
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pstrcpy(driver, sizeof(driver), cmdline);
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}
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for (info = device_info_list; info != NULL; info = info->next) {
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if (info->bus_info != &usb_bus_info)
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continue;
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usb = DO_UPCAST(USBDeviceInfo, qdev, info);
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if (usb->usbdevice_name == NULL)
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continue;
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if (strcmp(usb->usbdevice_name, driver) != 0)
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continue;
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break;
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}
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if (info == NULL) {
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#if 0
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/* no error because some drivers are not converted (yet) */
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error_report("usbdevice %s not found", driver);
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#endif
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return NULL;
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}
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if (!usb->usbdevice_init) {
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if (*params) {
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error_report("usbdevice %s accepts no params", driver);
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return NULL;
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}
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return usb_create_simple(bus, usb->qdev.name);
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}
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return usb->usbdevice_init(params);
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}
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