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/*
* Copyright (c) 2024, sakumisu
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "usbd_core.h"
#include "usbd_rndis.h"
/*!< endpoint address */
#define CDC_IN_EP 0x81
#define CDC_OUT_EP 0x02
#define CDC_INT_EP 0x83
#define USBD_VID 0xEFFF
#define USBD_PID 0xEFFF
#define USBD_MAX_POWER 100
#define USBD_LANGID_STRING 1033
/*!< config descriptor size */
#define USB_CONFIG_SIZE (9 + CDC_RNDIS_DESCRIPTOR_LEN)
#ifdef CONFIG_USB_HS
#define CDC_MAX_MPS 512
#else
#define CDC_MAX_MPS 64
#endif
/*!< global descriptor */
static const uint8_t cdc_descriptor[] = {
USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
CDC_RNDIS_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
///////////////////////////////////////
/// string0 descriptor
///////////////////////////////////////
USB_LANGID_INIT(USBD_LANGID_STRING),
///////////////////////////////////////
/// string1 descriptor
///////////////////////////////////////
0x14, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
///////////////////////////////////////
/// string2 descriptor
///////////////////////////////////////
0x2A, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'C', 0x00, /* wcChar0 */
'h', 0x00, /* wcChar1 */
'e', 0x00, /* wcChar2 */
'r', 0x00, /* wcChar3 */
'r', 0x00, /* wcChar4 */
'y', 0x00, /* wcChar5 */
'U', 0x00, /* wcChar6 */
'S', 0x00, /* wcChar7 */
'B', 0x00, /* wcChar8 */
' ', 0x00, /* wcChar9 */
'R', 0x00, /* wcChar10 */
'N', 0x00, /* wcChar11 */
'D', 0x00, /* wcChar12 */
'I', 0x00, /* wcChar13 */
'S', 0x00, /* wcChar14 */
' ', 0x00, /* wcChar15 */
'D', 0x00, /* wcChar16 */
'E', 0x00, /* wcChar17 */
'M', 0x00, /* wcChar18 */
'O', 0x00, /* wcChar19 */
///////////////////////////////////////
/// string3 descriptor
///////////////////////////////////////
0x16, /* bLength */
USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
'2', 0x00, /* wcChar0 */
'0', 0x00, /* wcChar1 */
'2', 0x00, /* wcChar2 */
'2', 0x00, /* wcChar3 */
'1', 0x00, /* wcChar4 */
'2', 0x00, /* wcChar5 */
'3', 0x00, /* wcChar6 */
'4', 0x00, /* wcChar7 */
'5', 0x00, /* wcChar8 */
'6', 0x00, /* wcChar9 */
#ifdef CONFIG_USB_HS
///////////////////////////////////////
/// device qualifier descriptor
///////////////////////////////////////
0x0a,
USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
0x00,
0x02,
0x02,
0x02,
0x01,
0x40,
0x01,
0x00,
#endif
0x00
};
const uint8_t mac[6] = { 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
/*Static IP ADDRESS: IP_ADDR0.IP_ADDR1.IP_ADDR2.IP_ADDR3 */
#define IP_ADDR0 (uint8_t)192
#define IP_ADDR1 (uint8_t)168
#define IP_ADDR2 (uint8_t)123
#define IP_ADDR3 (uint8_t)100
/*NETMASK*/
#define NETMASK_ADDR0 (uint8_t)255
#define NETMASK_ADDR1 (uint8_t)255
#define NETMASK_ADDR2 (uint8_t)255
#define NETMASK_ADDR3 (uint8_t)0
/*Gateway Address*/
#define GW_ADDR0 (uint8_t)192
#define GW_ADDR1 (uint8_t)168
#define GW_ADDR2 (uint8_t)123
#define GW_ADDR3 (uint8_t)1
#ifdef RT_USING_LWIP
#include <rtthread.h>
#include <rtdevice.h>
#include <netif/ethernetif.h>
const ip_addr_t ipaddr = IPADDR4_INIT_BYTES(IP_ADDR0, IP_ADDR1, IP_ADDR2, IP_ADDR3);
const ip_addr_t netmask = IPADDR4_INIT_BYTES(NETMASK_ADDR0, NETMASK_ADDR1, NETMASK_ADDR2, NETMASK_ADDR3);
const ip_addr_t gateway = IPADDR4_INIT_BYTES(GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);
struct eth_device rndis_dev;
static rt_err_t rt_usbd_rndis_control(rt_device_t dev, int cmd, void *args)
{
switch (cmd) {
case NIOCTL_GADDR:
/* get mac address */
if (args)
{
uint8_t *mac_dev = (uint8_t *)args;
rt_memcpy(mac_dev, mac, 6);
mac_dev[5] = ~mac_dev[5]; /* device mac can't same as host. */
}
else
return -RT_ERROR;
break;
default:
break;
}
return RT_EOK;
}
struct pbuf *rt_usbd_rndis_eth_rx(rt_device_t dev)
{
return usbd_rndis_eth_rx();
}
rt_err_t rt_usbd_rndis_eth_tx(rt_device_t dev, struct pbuf *p)
{
return usbd_rndis_eth_tx(p);
}
void usbd_rndis_data_recv_done(void)
{
eth_device_ready(&rndis_dev);
}
void rt_usbd_rndis_init(void)
{
rndis_dev.parent.control = rt_usbd_rndis_control;
rndis_dev.eth_rx = rt_usbd_rndis_eth_rx;
rndis_dev.eth_tx = rt_usbd_rndis_eth_tx;
eth_device_init(&rndis_dev, "u0");
eth_device_linkchange(&rndis_dev, RT_FALSE);
}
#else
#include "netif/etharp.h"
#include "lwip/init.h"
#include "lwip/netif.h"
#include "lwip/pbuf.h"
const ip_addr_t ipaddr = IPADDR4_INIT_BYTES(IP_ADDR0, IP_ADDR1, IP_ADDR2, IP_ADDR3);
const ip_addr_t netmask = IPADDR4_INIT_BYTES(NETMASK_ADDR0, NETMASK_ADDR1, NETMASK_ADDR2, NETMASK_ADDR3);
const ip_addr_t gateway = IPADDR4_INIT_BYTES(GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);
static struct netif rndis_netif; //network interface
/* Network interface name */
#define IFNAME0 'E'
#define IFNAME1 'X'
err_t linkoutput_fn(struct netif *netif, struct pbuf *p)
{
static int ret;
ret = usbd_rndis_eth_tx(p);
if (ret == 0)
return ERR_OK;
else
return ERR_BUF;
}
err_t rndisif_init(struct netif *netif)
{
LWIP_ASSERT("netif != NULL", (netif != NULL));
netif->mtu = 1500;
netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP | NETIF_FLAG_UP;
netif->state = NULL;
netif->name[0] = IFNAME0;
netif->name[1] = IFNAME1;
netif->output = etharp_output;
netif->linkoutput = linkoutput_fn;
return ERR_OK;
}
err_t rndisif_input(struct netif *netif)
{
static err_t err;
static struct pbuf *p;
p = usbd_rndis_eth_rx();
if (p != NULL) {
err = netif->input(p, netif);
if (err != ERR_OK) {
pbuf_free(p);
}
} else {
return ERR_BUF;
}
return err;
}
void rndis_lwip_init(void)
{
struct netif *netif = &rndis_netif;
lwip_init();
netif->hwaddr_len = 6;
memcpy(netif->hwaddr, mac, 6);
netif->hwaddr[5] = ~netif->hwaddr[5]; /* device mac can't same as host. */
netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, rndisif_init, netif_input);
netif_set_default(netif);
while (!netif_is_up(netif)) {
}
// while (dhserv_init(&dhcp_config)) {}
// while (dnserv_init(&ipaddr, PORT_DNS, dns_query_proc)) {}
}
void usbd_rndis_data_recv_done(void)
{
}
void rndis_input_poll(void)
{
rndisif_input(&rndis_netif);
}
#endif /* RT_USING_LWIP */
static void usbd_event_handler(uint8_t busid, uint8_t event)
{
switch (event) {
case USBD_EVENT_RESET:
break;
case USBD_EVENT_CONNECTED:
break;
case USBD_EVENT_DISCONNECTED:
break;
case USBD_EVENT_RESUME:
break;
case USBD_EVENT_SUSPEND:
break;
case USBD_EVENT_CONFIGURED:
#ifdef RT_USING_LWIP
eth_device_linkchange(&rndis_dev, RT_TRUE);
#endif
break;
case USBD_EVENT_SET_REMOTE_WAKEUP:
break;
case USBD_EVENT_CLR_REMOTE_WAKEUP:
break;
default:
break;
}
}
struct usbd_interface intf0;
struct usbd_interface intf1;
void cdc_rndis_init(uint8_t busid, uint32_t reg_base)
{
#ifdef RT_USING_LWIP
rt_usbd_rndis_init();
#else
rndis_lwip_init();
#endif
usbd_desc_register(busid, cdc_descriptor);
usbd_add_interface(busid, usbd_rndis_init_intf(&intf0, CDC_OUT_EP, CDC_IN_EP, CDC_INT_EP, mac));
usbd_add_interface(busid, usbd_rndis_init_intf(&intf1, CDC_OUT_EP, CDC_IN_EP, CDC_INT_EP, mac));
usbd_initialize(busid, reg_base, usbd_event_handler);
}
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