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wireless-proxy-esp32/main/DAP_handle.c

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/**
* @file DAP_handle.c
* @brief Handle DAP packets and transaction push
* @version 0.5
* @change: 2020.02.04 first version
* 2020.11.11 support WinUSB mode
* 2021.02.17 support SWO
* 2021.10.03 try to handle unlink behavior
*
* @copyright Copyright (c) 2021
*
*/
#include <stdint.h>
#include <string.h>
#include "main/usbip_server.h"
#include "main/DAP_handle.h"
#include "main/dap_configuration.h"
#include "main/wifi_configuration.h"
#include "components/USBIP/usb_descriptor.h"
#include "components/DAP/include/DAP.h"
#include "components/DAP/include/swo.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/ringbuf.h"
#include "freertos/semphr.h"
#include "lwip/err.h"
#include "lwip/sockets.h"
#include "lwip/sys.h"
#include <lwip/netdb.h>
#if ((USE_MDNS == 1) || (USE_OTA == 1))
#define DAP_BUFFER_NUM 10
#else
#define DAP_BUFFER_NUM 20
#endif
#if (USE_WINUSB == 1)
typedef struct
{
uint32_t length;
uint8_t buf[DAP_PACKET_SIZE];
} DapPacket_t;
#else
typedef struct
{
uint8_t buf[DAP_PACKET_SIZE];
} DapPacket_t;
#endif
#define DAP_HANDLE_SIZE (sizeof(DapPacket_t))
extern int kSock;
extern TaskHandle_t kDAPTaskHandle;
int kRestartDAPHandle = NO_SIGNAL;
static DapPacket_t DAPDataProcessed;
static int dap_respond = 0;
// SWO Trace
static uint8_t *swo_data_to_send = NULL;
static uint32_t swo_data_num;
// DAP handle
static RingbufHandle_t dap_dataIN_handle = NULL;
static RingbufHandle_t dap_dataOUT_handle = NULL;
static SemaphoreHandle_t data_response_mux = NULL;
void malloc_dap_ringbuf() {
if (data_response_mux && xSemaphoreTake(data_response_mux, portMAX_DELAY) == pdTRUE)
{
if (dap_dataIN_handle == NULL) {
dap_dataIN_handle = xRingbufferCreate(DAP_HANDLE_SIZE * DAP_BUFFER_NUM, RINGBUF_TYPE_BYTEBUF);
}
if (dap_dataOUT_handle == NULL) {
dap_dataOUT_handle = xRingbufferCreate(DAP_HANDLE_SIZE * DAP_BUFFER_NUM, RINGBUF_TYPE_BYTEBUF);
}
xSemaphoreGive(data_response_mux);
}
}
void free_dap_ringbuf() {
if (data_response_mux && xSemaphoreTake(data_response_mux, portMAX_DELAY) == pdTRUE) {
if (dap_dataIN_handle) {
vRingbufferDelete(dap_dataIN_handle);
}
if (dap_dataOUT_handle) {
vRingbufferDelete(dap_dataOUT_handle);
}
dap_dataIN_handle = dap_dataOUT_handle = NULL;
xSemaphoreGive(data_response_mux);
}
}
void handle_dap_data_request(usbip_stage2_header *header, uint32_t length)
{
uint8_t *data_in = (uint8_t *)header;
data_in = &(data_in[sizeof(usbip_stage2_header)]);
// Point to the beginning of the URB packet
#if (USE_WINUSB == 1)
send_stage2_submit(header, 0, 0);
// always send constant size buf -> cuz we don't care about the IN packet size
// and to unify the style, we set aside the length of the section
xRingbufferSend(dap_dataIN_handle, data_in - sizeof(uint32_t), DAP_HANDLE_SIZE, portMAX_DELAY);
xTaskNotifyGive(kDAPTaskHandle);
#else
send_stage2_submit(header, 0, 0);
xRingbufferSend(dap_dataIN_handle, data_in, DAP_HANDLE_SIZE, portMAX_DELAY);
xTaskNotifyGive(kDAPTaskHandle);
#endif
// dap_respond = DAP_ProcessCommand((uint8_t *)data_in, (uint8_t *)data_out);
// //handle_dap_data_response(header);
// send_stage2_submit(header, 0, 0);
}
void handle_dap_data_response(usbip_stage2_header *header)
{
return;
// int resLength = dap_respond & 0xFFFF;
// if (resLength)
// {
// send_stage2_submit_data(header, 0, (void *)DAPDataProcessed.buf, resLength);
// dap_respond = 0;
// }
// else
// {
// send_stage2_submit(header, 0, 0);
// }
}
void handle_swo_trace_response(usbip_stage2_header *header)
{
#if (SWO_FUNCTION_ENABLE == 1)
if (kSwoTransferBusy)
{
// busy indicates that there is data to be send
os_printf("swo use data\r\n");
send_stage2_submit_data(header, 0, (void *)swo_data_to_send, swo_data_num);
SWO_TransferComplete();
}
else
{
// nothing to send.
send_stage2_submit(header, 0, 0);
}
#else
send_stage2_submit(header, 0, 0);
#endif
}
// SWO Data Queue Transfer
// buf: pointer to buffer with data
// num: number of bytes to transfer
void SWO_QueueTransfer(uint8_t *buf, uint32_t num)
{
swo_data_to_send = buf;
swo_data_num = num;
}
void DAP_Thread(void *argument)
{
dap_dataIN_handle = xRingbufferCreate(DAP_HANDLE_SIZE * DAP_BUFFER_NUM, RINGBUF_TYPE_BYTEBUF);
dap_dataOUT_handle = xRingbufferCreate(DAP_HANDLE_SIZE * DAP_BUFFER_NUM, RINGBUF_TYPE_BYTEBUF);
data_response_mux = xSemaphoreCreateMutex();
size_t packetSize;
int resLength;
DapPacket_t *item;
if (dap_dataIN_handle == NULL || dap_dataIN_handle == NULL ||
data_response_mux == NULL)
{
os_printf("Can not create DAP ringbuf/mux!\r\n");
vTaskDelete(NULL);
}
for (;;)
{
while (1)
{
if (kRestartDAPHandle)
{
free_dap_ringbuf();
if (kRestartDAPHandle == RESET_HANDLE) {
malloc_dap_ringbuf();
if (dap_dataIN_handle == NULL || dap_dataIN_handle == NULL)
{
os_printf("Can not create DAP ringbuf/mux!\r\n");
vTaskDelete(NULL);
}
}
kRestartDAPHandle = NO_SIGNAL;
}
ulTaskNotifyTake(pdFALSE, portMAX_DELAY); // wait event
if (dap_dataIN_handle == NULL || dap_dataOUT_handle == NULL) {
continue; // may be use elaphureLink, wait...
}
packetSize = 0;
item = (DapPacket_t *)xRingbufferReceiveUpTo(dap_dataIN_handle, &packetSize,
pdMS_TO_TICKS(1), DAP_HANDLE_SIZE);
if (packetSize == 0)
{
break;
}
else if (packetSize < DAP_HANDLE_SIZE)
{
os_printf("Wrong data in packet size:%d , data in remain: %d\r\n", packetSize, (int)xRingbufferGetMaxItemSize(dap_dataIN_handle));
vRingbufferReturnItem(dap_dataIN_handle, (void *)item);
break;
// This may not happen because there is a semaphore acquisition
}
if (item->buf[0] == ID_DAP_QueueCommands)
{
item->buf[0] = ID_DAP_ExecuteCommands;
}
resLength = DAP_ProcessCommand((uint8_t *)item->buf, (uint8_t *)DAPDataProcessed.buf); // use first 4 byte to save length
resLength &= 0xFFFF; // res length in lower 16 bits
vRingbufferReturnItem(dap_dataIN_handle, (void *)item); // process done.
// now prepare to reply
#if (USE_WINUSB == 1)
DAPDataProcessed.length = resLength;
#endif
xRingbufferSend(dap_dataOUT_handle, (void *)&DAPDataProcessed, DAP_HANDLE_SIZE, portMAX_DELAY);
if (xSemaphoreTake(data_response_mux, portMAX_DELAY) == pdTRUE)
{
++dap_respond;
xSemaphoreGive(data_response_mux);
}
}
}
}
int fast_reply(uint8_t *buf, uint32_t length)
{
usbip_stage2_header *buf_header = (usbip_stage2_header *)buf;
if (length == 48 &&
buf_header->base.command == PP_HTONL(USBIP_STAGE2_REQ_SUBMIT) &&
buf_header->base.direction == PP_HTONL(USBIP_DIR_IN) &&
buf_header->base.ep == PP_HTONL(1))
{
if (dap_respond > 0)
{
DapPacket_t *item;
size_t packetSize = 0;
item = (DapPacket_t *)xRingbufferReceiveUpTo(dap_dataOUT_handle, &packetSize,
pdMS_TO_TICKS(10), DAP_HANDLE_SIZE);
if (packetSize == DAP_HANDLE_SIZE)
{
#if (USE_WINUSB == 1)
send_stage2_submit_data_fast((usbip_stage2_header *)buf, item->buf, item->length);
#else
send_stage2_submit_data_fast((usbip_stage2_header *)buf, item->buf, DAP_HANDLE_SIZE);
#endif
if (xSemaphoreTake(data_response_mux, portMAX_DELAY) == pdTRUE)
{
--dap_respond;
xSemaphoreGive(data_response_mux);
}
vRingbufferReturnItem(dap_dataOUT_handle, (void *)item);
return 1;
}
else if (packetSize > 0)
{
os_printf("Wrong data out packet size:%d!\r\n", packetSize);
}
////TODO: fast reply
}
else
{
buf_header->base.command = PP_HTONL(USBIP_STAGE2_RSP_SUBMIT);
buf_header->base.direction = PP_HTONL(USBIP_DIR_OUT);
buf_header->u.ret_submit.status = 0;
buf_header->u.ret_submit.data_length = 0;
buf_header->u.ret_submit.error_count = 0;
usbip_network_send(kSock, buf, 48, 0);
return 1;
}
}
return 0;
}
void handle_dap_unlink()
{
// `USBIP_CMD_UNLINK` means calling `usb_unlink_urb()` or `usb_kill_urb()`.
// Note that execution of an URB is inherently an asynchronous operation, and there may be
// synchronization problems in the following solutions.
// One of the reasons this happens is that the host wants to abort the URB transfer operation
// as soon as possible. USBIP network fluctuations will also cause this error, but I don't know
// whether this is the main reason.
// Unlink may be applied to zero length URB of "DIR_IN", or a URB containing data.
// In the case of unlink, for the new "DIR_IN" request, it may always return an older response,
// which will lead to panic. This code is a compromise for eliminating the lagging response
// caused by UNLINK. It will clean up the buffers that may have data for return to the host.
// In general, we assume that there is at most one piece of data that has not yet been returned.
if (dap_respond > 0)
{
DapPacket_t *item;
size_t packetSize = 0;
item = (DapPacket_t *)xRingbufferReceiveUpTo(dap_dataOUT_handle, &packetSize,
pdMS_TO_TICKS(10), DAP_HANDLE_SIZE);
if (packetSize == DAP_HANDLE_SIZE)
{
if (xSemaphoreTake(data_response_mux, portMAX_DELAY) == pdTRUE)
{
--dap_respond;
xSemaphoreGive(data_response_mux);
}
vRingbufferReturnItem(dap_dataOUT_handle, (void *)item);
}
}
}
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