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usb: add serial bus property

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This patch adds a serial property for all usb devices, which can be
used to set the serial number of a usb device (as listed by lsusb -v)
to a specific value.  Applies to emulated devices only.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2013-06-12 13:01:49 +02:00
parent 628e54857a
commit 71938a09d2
5 changed files with 14 additions and 10 deletions
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1
hw/usb/bus.c
View File

@ -13,6 +13,7 @@ static int usb_qdev_exit(DeviceState *qdev);
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_END_OF_LIST()

6
hw/usb/desc.c
View File

@ -566,6 +566,12 @@ void usb_desc_create_serial(USBDevice *dev)
char *path;
int dst;
if (dev->serial) {
/* 'serial' usb bus property has priority if present */
usb_desc_set_string(dev, index, dev->serial);
return;
}
assert(index != 0 && desc->str[index] != NULL);
dst = snprintf(serial, sizeof(serial), "%s", desc->str[index]);
path = qdev_get_dev_path(hcd);

3
hw/usb/dev-hid.c
View File

@ -560,6 +560,9 @@ static int usb_hid_initfn(USBDevice *dev, int kind)
{
USBHIDState *us = DO_UPCAST(USBHIDState, dev, dev);
if (dev->serial) {
usb_desc_set_string(dev, STR_SERIALNUMBER, dev->serial);
}
usb_desc_init(dev);
us->intr = usb_ep_get(dev, USB_TOKEN_IN, 1);
hid_init(&us->hid, kind, usb_hid_changed);

11
hw/usb/dev-storage.c
View File

@ -58,7 +58,6 @@ typedef struct {
USBPacket *packet;
/* usb-storage only */
BlockConf conf;
char *serial;
uint32_t removable;
} MSDState;
@ -602,7 +601,7 @@ static int usb_msd_initfn_storage(USBDevice *dev)
return -1;
}
blkconf_serial(&s->conf, &s->serial);
blkconf_serial(&s->conf, &dev->serial);
/*
* Hack alert: this pretends to be a block device, but it's really
@ -616,16 +615,11 @@ static int usb_msd_initfn_storage(USBDevice *dev)
bdrv_detach_dev(bs, &s->dev.qdev);
s->conf.bs = NULL;
if (s->serial) {
usb_desc_set_string(dev, STR_SERIALNUMBER, s->serial);
} else {
usb_desc_create_serial(dev);
}
usb_desc_init(dev);
scsi_bus_new(&s->bus, &s->dev.qdev, &usb_msd_scsi_info_storage, NULL);
scsi_dev = scsi_bus_legacy_add_drive(&s->bus, bs, 0, !!s->removable,
s->conf.bootindex, s->serial);
s->conf.bootindex, dev->serial);
if (!scsi_dev) {
return -1;
}
@ -734,7 +728,6 @@ static const VMStateDescription vmstate_usb_msd = {
static Property msd_properties[] = {
DEFINE_BLOCK_PROPERTIES(MSDState, conf),
DEFINE_PROP_STRING("serial", MSDState, serial),
DEFINE_PROP_BIT("removable", MSDState, removable, 0, false),
DEFINE_PROP_END_OF_LIST(),
};

1
include/hw/usb.h
View File

@ -205,6 +205,7 @@ struct USBDevice {
DeviceState qdev;
USBPort *port;
char *port_path;
char *serial;
void *opaque;
uint32_t flags;