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/*
* Copyright (C) 2013 Linaro Limited
*
* Matt Porter <mporter@linaro.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <netinet/ether.h>
#include <usbg/usbg.h>
/**
* @file show-gadgets.c
* @example show-gadgets.c
* This example shows how to display all configured USB gadgets
* in the system
*/
void show_gadget(usbg_gadget *g)
{
const char *name, *udc;
usbg_udc *u;
int usbg_ret;
usbg_gadget_attrs g_attrs;
usbg_gadget_strs g_strs;
name = usbg_get_gadget_name(g);
if (!name) {
fprintf(stderr, "Unable to get gadget name\n");
return;
}
usbg_ret = usbg_get_gadget_attrs(g, &g_attrs);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return;
}
fprintf(stdout, "ID %04x:%04x '%s'\n",
g_attrs.idVendor, g_attrs.idProduct, name);
u = usbg_get_gadget_udc(g);
if (u)
/* gadget is enabled */
udc = usbg_get_udc_name(u);
else
/* gadget is disabled */
udc = "\0";
fprintf(stdout, " UDC\t\t\t%s\n", udc);
fprintf(stdout, " bDeviceClass\t\t0x%02x\n", g_attrs.bDeviceClass);
fprintf(stdout, " bDeviceSubClass\t0x%02x\n", g_attrs.bDeviceSubClass);
fprintf(stdout, " bDeviceProtocol\t0x%02x\n", g_attrs.bDeviceProtocol);
fprintf(stdout, " bMaxPacketSize0\t0x%02x\n", g_attrs.bMaxPacketSize0);
fprintf(stdout, " bcdDevice\t\t0x%04x\n", g_attrs.bcdDevice);
fprintf(stdout, " bcdUSB\t\t0x%04x\n", g_attrs.bcdUSB);
fprintf(stdout, " idVendor\t\t0x%04x\n", g_attrs.idVendor);
fprintf(stdout, " idProduct\t\t0x%04x\n", g_attrs.idProduct);
usbg_ret = usbg_get_gadget_strs(g, LANG_US_ENG, &g_strs);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return;
}
fprintf(stdout, " Serial Number\t\t%s\n", g_strs.str_ser);
fprintf(stdout, " Manufacturer\t\t%s\n", g_strs.str_mnf);
fprintf(stdout, " Product\t\t%s\n", g_strs.str_prd);
}
void show_function(usbg_function *f)
{
const char *instance;
usbg_function_type type;
int usbg_ret;
usbg_function_attrs f_attrs;
instance = usbg_get_function_instance(f);
if (!instance) {
fprintf(stderr, "Unable to get function instance name\n");
return;
}
type = usbg_get_function_type(f);
usbg_ret = usbg_get_function_attrs(f, &f_attrs);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return;
}
fprintf(stdout, " Function, type: %s instance: %s\n",
usbg_get_function_type_str(type), instance);
switch (f_attrs.header.attrs_type) {
case USBG_F_ATTRS_SERIAL:
fprintf(stdout, " port_num\t\t%d\n",
f_attrs.attrs.serial.port_num);
break;
case USBG_F_ATTRS_NET:
{
usbg_f_net_attrs *f_net_attrs = &f_attrs.attrs.net;
fprintf(stdout, " dev_addr\t\t%s\n",
ether_ntoa(&f_net_attrs->dev_addr));
fprintf(stdout, " host_addr\t\t%s\n",
ether_ntoa(&f_net_attrs->host_addr));
fprintf(stdout, " ifname\t\t%s\n", f_net_attrs->ifname);
fprintf(stdout, " qmult\t\t%d\n", f_net_attrs->qmult);
break;
}
case USBG_F_ATTRS_PHONET:
fprintf(stdout, " ifname\t\t%s\n", f_attrs.attrs.phonet.ifname);
break;
case USBG_F_ATTRS_FFS:
fprintf(stdout, " dev_name\t\t%s\n", f_attrs.attrs.ffs.dev_name);
break;
case USBG_F_ATTRS_MS:
{
usbg_f_ms_attrs *attrs = &f_attrs.attrs.ms;
int i;
fprintf(stdout, " stall\t\t%d\n", attrs->stall);
fprintf(stdout, " nluns\t\t%d\n", attrs->nluns);
for (i = 0; i < attrs->nluns; ++i) {
fprintf(stdout, " lun %d:\n", attrs->luns[i]->id);
fprintf(stdout, " cdrom\t\t%d\n", attrs->luns[i]->cdrom);
fprintf(stdout, " ro\t\t%d\n", attrs->luns[i]->ro);
fprintf(stdout, " nofua\t\t%d\n", attrs->luns[i]->nofua);
fprintf(stdout, " removable\t\t%d\n", attrs->luns[i]->removable);
fprintf(stdout, " file\t\t%s\n", attrs->luns[i]->filename);
}
break;
}
default:
fprintf(stdout, " UNKNOWN\n");
}
usbg_cleanup_function_attrs(&f_attrs);
}
void show_config(usbg_config *c)
{
usbg_binding *b;
usbg_function *f;
const char *label, *instance, *bname;
usbg_function_type type;
usbg_config_attrs c_attrs;
usbg_config_strs c_strs;
int usbg_ret, id;
label = usbg_get_config_label(c);
if (!label) {
fprintf(stderr, "Unable to get config label\n");
return;
}
id = usbg_get_config_id(c);
fprintf(stdout, " Configuration: '%s' ID: %d\n", label, id);
usbg_ret = usbg_get_config_attrs(c, &c_attrs);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return;
}
fprintf(stdout, " MaxPower\t\t%d\n", c_attrs.bMaxPower);
fprintf(stdout, " bmAttributes\t0x%02x\n", c_attrs.bmAttributes);
usbg_ret = usbg_get_config_strs(c, LANG_US_ENG, &c_strs);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return;
}
fprintf(stdout, " configuration\t%s\n", c_strs.configuration);
usbg_for_each_binding(b, c) {
bname = usbg_get_binding_name(b);
f = usbg_get_binding_target(b);
instance = usbg_get_function_instance(f);
type = usbg_get_function_type(f);
if (!bname || !instance) {
fprintf(stderr, "Unable to get binding details\n");
return;
}
fprintf(stdout, " %s -> %s %s\n", bname,
usbg_get_function_type_str(type), instance);
}
}
int main(void)
{
usbg_state *s;
usbg_gadget *g;
usbg_function *f;
usbg_config *c;
int usbg_ret;
usbg_ret = usbg_init("/sys/kernel/config", &s);
if (usbg_ret != USBG_SUCCESS) {
fprintf(stderr, "Error on USB gadget init\n");
fprintf(stderr, "Error: %s : %s\n", usbg_error_name(usbg_ret),
usbg_strerror(usbg_ret));
return -EINVAL;
}
usbg_for_each_gadget(g, s) {
show_gadget(g);
usbg_for_each_function(f, g)
show_function(f);
usbg_for_each_config(c, g)
show_config(c);
}
usbg_cleanup(s);
return 0;
}
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