struct xusb *xusb_open_one(const struct xusb_spec *specs, int numspecs,
xusb_filter_t filterfunc, void *data)
{
struct xlist_node *xusb_list;
struct xlist_node *curr;
int num;
struct xusb *xusb = NULL;
xusb_list = xusb_find_byproduct(specs, numspecs, filterfunc, data);
num = xlist_length(xusb_list);
DBG("total %d devices\n", num);
switch (num) {
case 0:
ERR("No matching device.\n");
break;
case 1:
curr = xlist_shift(xusb_list);
xusb = curr->data;
xlist_destroy(curr, NULL);
xlist_destroy(xusb_list, NULL);
if (!xusb_claim_interface(xusb)) {
xusb_destroy(xusb);
return NULL;
}
xusb_showinfo(xusb);
break;
default:
ERR("Too many devices (%d). Aborting.\n", num);
break;
}
return xusb;
}
static int run_spec(int i, xusb_filter_t filter, char *devpath, int timeout)
{
const struct xusb_spec *s = &known_devices[i].spec;
int interface_num = known_devices[i].interface_num;
struct xlist_node *xlist;
struct xlist_node *curr;
struct xusb_device *xusb_device;
int success = 1;
if (!s->name)
return 0;
xlist = xusb_find_byproduct(s, 1, filter, devpath);
if (!xlist_length(xlist))
return 1;
INFO("total %zd devices of type %s\n", xlist_length(xlist), s->name);
for (curr = xlist_shift(xlist); curr; curr = xlist_shift(xlist)) {
struct xusb_iface *xusb_iface;
int ret;
xusb_device = curr->data;
xusb_showinfo(xusb_device);
INFO("Testing interface %d\n", interface_num);
ret = xusb_claim(xusb_device, interface_num, &xusb_iface);
if (ret == 0) {
ret = test_device(xusb_iface, timeout);
if (ret < 0)
success = 0;
}
xusb_destroy(xusb_device);
}
xlist_destroy(xlist, xusb_destructor);
return success;
}
struct xlist_node *xusb_find_byproduct(const struct xusb_spec *specs,
int numspecs, xusb_filter_t filterfunc, void *data)
{
struct xlist_node *xlist;
struct usb_bus *bus;
struct usb_device *dev;
DBG("specs(%d)\n", numspecs);
xlist = xlist_new(NULL);
if (!xlist) {
ERR("Failed allocation new xlist");
goto fail_xlist;
}
xusb_init();
for (bus = usb_get_busses(); bus; bus = bus->next) {
for (dev = bus->devices; dev; dev = dev->next) {
struct usb_device_descriptor *dev_desc;
struct xlist_node *item;
int i;
dev_desc = &dev->descriptor;
assert(dev_desc);
DBG("usb:%s/%s: ID=%04X:%04X\n",
dev->bus->dirname,
dev->filename,
dev_desc->idVendor,
dev_desc->idProduct);
for (i = 0; i < numspecs; i++) {
struct xusb *xusb;
const struct xusb_spec *sp = &specs[i];
if (!match_interface(dev, sp))
continue;
xusb = xusb_new(dev, sp);
if (!xusb) {
ERR("xusb allocation failed\n");
goto fail_malloc;
}
if (filterfunc && !filterfunc(xusb, data)) {
xusb_destroy(xusb);
continue;
}
item = xlist_new(xusb);
xlist_append_item(xlist, item);
break;
}
}
}
xusb_list_dump(xlist);
return xlist;
fail_malloc:
xlist_destroy(xlist, NULL);
fail_xlist:
return NULL;
}
static struct xusb *xusb_new(struct usb_device *dev, const struct xusb_spec *spec)
{
struct usb_device_descriptor *dev_desc;
struct usb_config_descriptor *config_desc;
struct usb_interface *interface;
struct usb_interface_descriptor *iface_desc;
struct usb_endpoint_descriptor *endpoint;
size_t max_packet_size;
int i;
struct xusb *xusb = NULL;
/*
* Get information from the usb_device
*/
if((dev_desc = &dev->descriptor) == NULL) {
ERR("usb device without a device descriptor\n");
goto fail;
}
if((config_desc = dev->config) == NULL) {
ERR("usb device without a configuration descriptor\n");
goto fail;
}
interface = &config_desc->interface[spec->my_interface_num];
iface_desc = interface->altsetting;
endpoint = iface_desc->endpoint;
/* Calculate max packet size */
max_packet_size = PACKET_SIZE;
for(i = 0; i < iface_desc->bNumEndpoints; i++, endpoint++) {
DBG("Validating endpoint @ %d (interface %d)\n", i, spec->my_interface_num);
if(endpoint->bEndpointAddress == spec->my_ep_out || endpoint->bEndpointAddress == spec->my_ep_in) {
if(endpoint->wMaxPacketSize > PACKET_SIZE) {
ERR("Endpoint #%d wMaxPacketSize too large (%d)\n", i, endpoint->wMaxPacketSize);
goto fail;
}
if(endpoint->wMaxPacketSize < max_packet_size) {
max_packet_size = endpoint->wMaxPacketSize;
}
}
}
/* Fill xusb */
if((xusb = malloc(sizeof(*xusb))) == NULL) {
ERR("Out of memory");
goto fail;
}
memset(xusb, 0, sizeof(*xusb));
xusb->dev = dev;
xusb->spec = spec;
sscanf(dev->bus->dirname, "%d", &xusb->bus_num);
sscanf(dev->filename, "%d", &xusb->device_num);
snprintf(xusb->devpath_tail, PATH_MAX, "%03d/%03d",
xusb->bus_num, xusb->device_num);
xusb->interface_num = spec->my_interface_num;
xusb->ep_out = spec->my_ep_out;
xusb->ep_in = spec->my_ep_in;
xusb->packet_size = max_packet_size;
xusb->is_usb2 = (max_packet_size == 512);
if (! xusb_open(xusb)) {
ERR("Failed opening device: %04X:%04X - %s\n",
dev_desc->idVendor,
dev_desc->idProduct,
xusb->devpath_tail);
goto fail;
}
DBG("%04X:%04X - %s\n",
dev_desc->idVendor,
dev_desc->idProduct,
xusb->devpath_tail);
return xusb;
fail:
xusb_destroy(xusb);
return NULL;
}
static void xusb_destructor(void *data)
{
struct xusb_device *xusb_device = data;
xusb_destroy(xusb_device);
}
