806b602482
* Add USBBus. * Add USBDeviceInfo, move device callbacks here. * Add usb-qdev helper functions. * Switch drivers to qdev. TODO: * make the rest of qemu aware of usb busses and kill the FIXMEs added by this patch. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
83 lines
1.8 KiB
C
83 lines
1.8 KiB
C
#include "hw.h"
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#include "usb.h"
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#include "qdev.h"
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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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};
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static int next_usb_bus = 0;
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static TAILQ_HEAD(, USBBus) busses = TAILQ_HEAD_INITIALIZER(busses);
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USBBus *usb_bus_new(DeviceState *host)
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{
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USBBus *bus;
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bus = FROM_QBUS(USBBus, qbus_create(&usb_bus_info, host, NULL));
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bus->busnr = next_usb_bus++;
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TAILQ_INIT(&bus->free);
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TAILQ_INIT(&bus->used);
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TAILQ_INSERT_TAIL(&busses, bus, next);
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return bus;
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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 TAILQ_FIRST(&busses);
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TAILQ_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->devname, sizeof(dev->devname), qdev->info->name);
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dev->info = info;
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rc = dev->info->init(dev);
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return rc;
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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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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_simple(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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qdev_init(dev);
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return DO_UPCAST(USBDevice, qdev, dev);
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}
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