[PATCHv6 10/16] Add get_dev_path callback for usb bus.

Gleb Natapov
2010-11-17T16:44:12Z

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
hw/usb-bus.c | 42 ++++++++++++++++++++++++++++++++++++++++++
1 files changed, 42 insertions(+), 0 deletions(-)

diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 256b881..8b4583c 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -5,11 +5,13 @@
#include "monitor.h"

static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
+static char *usbbus_get_fw_dev_path(DeviceState *dev);

static struct BusInfo usb_bus_info = {
.name = "USB",
.size = sizeof(USBBus),
.print_dev = usb_bus_dev_print,
+ .get_fw_dev_path = usbbus_get_fw_dev_path,
};
static int next_usb_bus = 0;
static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
@@ -307,3 +309,43 @@ USBDevice *usbdevice_create(const char *cmdline)
}
return usb->usbdevice_init(params);
}
+
+static int usbbus_get_fw_dev_path_helper(USBDevice *d, USBBus *bus, char *p,
+ int len)
+{
+ int l = 0;
+ USBPort *port;
+
+ QTAILQ_FOREACH(port, &bus->used, next) {
+ if (port->dev == d) {
+ if (port->pdev) {
+ l = usbbus_get_fw_dev_path_helper(port->pdev, bus, p, len);
+ }
+ l += snprintf(p + l, len - l, "%s@%x/", qdev_fw_name(&d->qdev),
+ port->index);
+ break;
+ }
+ }
+
+ return l;
+}
+
+static char *usbbus_get_fw_dev_path(DeviceState *dev)
+{
+ USBDevice *d = (USBDevice*)dev;
+ USBBus *bus = usb_bus_from_device(d);
+ char path[100];
+ int l;
+
+ assert(d->attached != 0);
+
+ l = usbbus_get_fw_dev_path_helper(d, bus, path, sizeof(path));
+
+ if (l == 0) {
+ abort();
+ }
+
+ path[l-1] = '\0';
+
+ return strdup(path);
+}
--
1.7.2.3