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xen: attach pvusb usb bus to backend qdev 

Attach the usb bus of a new pvusb controller to the qdev associated
with the Xen backend. Any device connected to that controller can now
specify the bus and port directly via its properties.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
This commit is contained in:
Juergen Gross 2016-11-22 07:10:59 +01:00 committed by Stefano Stabellini
parent 3a6c9172ac
commit f1784a222e
1 changed files with 10 additions and 13 deletions
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23
hw/usb/xen-usb.c
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@ -712,15 +712,10 @@ static void usbback_portid_detach(struct usbback_info *usbif, unsigned port)
static void usbback_portid_remove(struct usbback_info *usbif, unsigned port)
{
USBPort *p;
if (!usbif->ports[port - 1].dev) {
return;
}
p = &(usbif->ports[port - 1].port);
snprintf(p->path, sizeof(p->path), "%d", 99);
object_unparent(OBJECT(usbif->ports[port - 1].dev));
usbif->ports[port - 1].dev = NULL;
usbback_portid_detach(usbif, port);
@ -733,10 +728,10 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port,
{
unsigned speed;
char *portname;
USBPort *p;
Error *local_err = NULL;
QDict *qdict;
QemuOpts *opts;
char *tmp;
if (usbif->ports[port - 1].dev) {
return;
@ -749,11 +744,16 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port,
return;
}
portname++;
p = &(usbif->ports[port - 1].port);
snprintf(p->path, sizeof(p->path), "%s", portname);
qdict = qdict_new();
qdict_put(qdict, "driver", qstring_from_str("usb-host"));
tmp = g_strdup_printf("%s.0", usbif->xendev.qdev.id);
qdict_put(qdict, "bus", qstring_from_str(tmp));
g_free(tmp);
tmp = g_strdup_printf("%s-%u", usbif->xendev.qdev.id, port);
qdict_put(qdict, "id", qstring_from_str(tmp));
g_free(tmp);
qdict_put(qdict, "port", qint_from_int(port));
qdict_put(qdict, "hostbus", qint_from_int(atoi(busid)));
qdict_put(qdict, "hostport", qstring_from_str(portname));
opts = qemu_opts_from_qdict(qemu_find_opts("device"), qdict, &local_err);
@ -765,7 +765,6 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port,
goto err;
}
QDECREF(qdict);
snprintf(p->path, sizeof(p->path), "%d", port);
speed = usbif->ports[port - 1].dev->speed;
switch (speed) {
case USB_SPEED_LOW:
@ -799,7 +798,6 @@ static void usbback_portid_add(struct usbback_info *usbif, unsigned port,
err:
QDECREF(qdict);
snprintf(p->path, sizeof(p->path), "%d", 99);
xen_pv_printf(&usbif->xendev, 0, "device %s could not be opened\n", busid);
}
@ -1012,13 +1010,13 @@ static void usbback_alloc(struct XenDevice *xendev)
usbif = container_of(xendev, struct usbback_info, xendev);
usb_bus_new(&usbif->bus, sizeof(usbif->bus), &xen_usb_bus_ops, xen_sysdev);
usb_bus_new(&usbif->bus, sizeof(usbif->bus), &xen_usb_bus_ops,
DEVICE(&xendev->qdev));
for (i = 0; i < USBBACK_MAXPORTS; i++) {
p = &(usbif->ports[i].port);
usb_register_port(&usbif->bus, p, usbif, i, &xen_usb_port_ops,
USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL |
USB_SPEED_MASK_HIGH);
snprintf(p->path, sizeof(p->path), "%d", 99);
}
QTAILQ_INIT(&usbif->req_free_q);
@ -1066,7 +1064,6 @@ static int usbback_free(struct XenDevice *xendev)
}
usb_bus_release(&usbif->bus);
object_unparent(OBJECT(&usbif->bus));
TR_BUS(xendev, "finished\n");