forked from osmocom/wireshark
1138 lines
36 KiB
C
1138 lines
36 KiB
C
/* packet-ftdi-ft.c
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* Routines for FTDI FTxxxx USB converters dissection
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*
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* Copyright 2019 Tomasz Mon
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/prefs.h>
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#include <epan/expert.h>
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#include "packet-usb.h"
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static int proto_ftdi_ft = -1;
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static gint hf_setup_brequest = -1;
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static gint hf_setup_lvalue = -1;
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static gint hf_setup_lvalue_purge = -1;
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static gint hf_setup_lvalue_dtr = -1;
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static gint hf_setup_lvalue_rts = -1;
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static gint hf_setup_lvalue_xon_char = -1;
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static gint hf_setup_lvalue_baud_low = -1;
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static gint hf_setup_lvalue_data_size = -1;
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static gint hf_setup_lvalue_event_char = -1;
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static gint hf_setup_lvalue_error_char = -1;
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static gint hf_setup_lvalue_latency_time = -1;
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static gint hf_setup_hvalue = -1;
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static gint hf_setup_hvalue_dtr = -1;
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static gint hf_setup_hvalue_rts = -1;
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static gint hf_setup_hvalue_xoff_char = -1;
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static gint hf_setup_hvalue_baud_mid = -1;
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static gint hf_setup_hvalue_parity = -1;
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static gint hf_setup_hvalue_stop_bits = -1;
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static gint hf_setup_hvalue_break_bit = -1;
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static gint hf_setup_hvalue_trigger = -1;
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static gint hf_setup_hvalue_error_replacement = -1;
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static gint hf_setup_lindex = -1;
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static gint hf_setup_lindex_port_ab = -1;
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static gint hf_setup_lindex_port_abcd = -1;
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static gint hf_setup_lindex_baud_high = -1;
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static gint hf_setup_hindex = -1;
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static gint hf_setup_hindex_rts_cts = -1;
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static gint hf_setup_hindex_dtr_dsr = -1;
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static gint hf_setup_hindex_xon_xoff = -1;
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static gint hf_setup_hindex_baud_high = -1;
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static gint hf_setup_hindex_baud_clock_divide = -1;
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static gint hf_setup_wlength = -1;
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static gint hf_response_lat_timer = -1;
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static gint hf_modem_status = -1;
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static gint hf_modem_status_fs_max_packet = -1;
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static gint hf_modem_status_hs_max_packet = -1;
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static gint hf_modem_status_cts = -1;
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static gint hf_modem_status_dsr = -1;
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static gint hf_modem_status_ri = -1;
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static gint hf_modem_status_dcd = -1;
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static gint hf_line_status = -1;
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static gint hf_line_status_receive_overflow = -1;
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static gint hf_line_status_parity_error = -1;
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static gint hf_line_status_framing_error = -1;
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static gint hf_line_status_break_received = -1;
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static gint hf_line_status_tx_holding_reg_empty = -1;
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static gint hf_line_status_tx_empty = -1;
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static gint hf_if_a_rx_payload = -1;
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static gint hf_if_a_tx_payload = -1;
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static gint hf_if_b_rx_payload = -1;
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static gint hf_if_b_tx_payload = -1;
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static gint hf_if_c_rx_payload = -1;
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static gint hf_if_c_tx_payload = -1;
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static gint hf_if_d_rx_payload = -1;
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static gint hf_if_d_tx_payload = -1;
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static gint ett_ftdi_ft = -1;
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static gint ett_modem_ctrl_lvalue = -1;
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static gint ett_modem_ctrl_hvalue = -1;
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static gint ett_flow_ctrl_hindex = -1;
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static gint ett_baudrate_lindex = -1;
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static gint ett_baudrate_hindex = -1;
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static gint ett_setdata_hvalue = -1;
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static gint ett_modem_status = -1;
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static gint ett_line_status = -1;
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static expert_field ei_undecoded = EI_INIT;
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static dissector_handle_t ftdi_ft_handle;
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static wmem_tree_t *request_info = NULL;
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typedef struct _request_data {
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guint32 bus_id;
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guint32 device_address;
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guint8 request;
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} request_data_t;
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#define REQUEST_RESET 0x00
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#define REQUEST_MODEM_CTRL 0x01
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#define REQUEST_SET_FLOW_CTRL 0x02
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#define REQUEST_SET_BAUD_RATE 0x03
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#define REQUEST_SET_DATA 0x04
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#define REQUEST_GET_MODEM_STAT 0x05
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#define REQUEST_SET_EVENT_CHAR 0x06
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#define REQUEST_SET_ERROR_CHAR 0x07
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#define REQUEST_SET_LAT_TIMER 0x09
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#define REQUEST_GET_LAT_TIMER 0x0A
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static const value_string request_vals[] = {
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{REQUEST_RESET, "Reset"},
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{REQUEST_MODEM_CTRL, "ModemCtrl"},
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{REQUEST_SET_FLOW_CTRL, "SetFlowCtrl"},
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{REQUEST_SET_BAUD_RATE, "SetBaudRate"},
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{REQUEST_SET_DATA, "SetData"},
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{REQUEST_GET_MODEM_STAT, "GetModemStat"},
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{REQUEST_SET_EVENT_CHAR, "SetEventChar"},
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{REQUEST_SET_ERROR_CHAR, "SetErrorChar"},
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{REQUEST_SET_LAT_TIMER, "SetLatTimer"},
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{REQUEST_GET_LAT_TIMER, "GetLatTimer"},
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{0, NULL}
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};
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static value_string_ext request_vals_ext = VALUE_STRING_EXT_INIT(request_vals);
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static const value_string reset_purge_vals[] = {
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{0x00, "Purge RX and TX"},
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{0x01, "Purge RX"},
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{0x02, "Purge TX"},
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{0, NULL}
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};
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static const value_string index_port_ab_vals[] = {
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{0x00, "Port A"},
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{0x01, "Port A"},
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{0x02, "Port B"},
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{0, NULL}
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};
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static const value_string index_port_abcd_vals[] = {
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{0x00, "Port A"},
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{0x01, "Port A"},
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{0x02, "Port B"},
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{0x03, "Port C"},
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{0x04, "Port D"},
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{0, NULL}
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};
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static const value_string data_size_vals[] = {
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{0x07, "7 bit data"},
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{0x08, "8 bit data"},
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{0, NULL}
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};
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static const value_string parity_vals[] = {
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{0x0, "None"},
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{0x1, "Odd"},
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{0x2, "Even"},
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{0x3, "Mark"},
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{0x4, "Space"},
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{0, NULL}
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};
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static const value_string stop_bits_vals[] = {
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{0, "1 stop bit"},
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{1, "2 stop bits"},
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{0, NULL}
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};
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static const value_string break_bit_vals[] = {
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{0, "No Break"},
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{1, "Set Break"},
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{0, NULL}
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};
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static const value_string event_char_trigger_vals[] = {
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{0x00, "No trigger"},
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{0x01, "Trigger IN on Event Char"},
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{0, NULL}
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};
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static const value_string error_replacement_vals[] = {
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{0x00, "No Error Replacement"},
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{0x01, "Error Replacement On"},
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{0, NULL}
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};
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void proto_register_ftdi_ft(void);
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void proto_reg_handoff_ftdi_ft(void);
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typedef enum {
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FTDI_CHIP_UNKNOWN,
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FTDI_CHIP_FT8U232AM,
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FTDI_CHIP_FT232B,
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FTDI_CHIP_FT2232D,
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FTDI_CHIP_FT232R,
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FTDI_CHIP_FT2232H,
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FTDI_CHIP_FT4232H,
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FTDI_CHIP_FT232H,
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FTDI_CHIP_X_SERIES,
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} FTDI_CHIP;
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typedef enum {
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FTDI_INTERFACE_UNKNOWN,
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FTDI_INTERFACE_A,
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FTDI_INTERFACE_B,
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FTDI_INTERFACE_C,
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FTDI_INTERFACE_D,
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} FTDI_INTERFACE;
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/* It is assumed that this function is called only when the device is known
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* to be FTDI FT chip and thus the VID and PID is not checked here.
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* This function determines chip based on bcdDevice version which cannot be
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* altered by the hardware vendor.
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*/
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static FTDI_CHIP
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identify_chip(usb_conv_info_t *usb_conv_info)
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{
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switch (usb_conv_info->deviceVersion)
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{
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case 0x0200:
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if (usb_conv_info->iSerialNumber)
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{
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/* Serial number enabled - it is FT8U232AM */
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return FTDI_CHIP_FT8U232AM;
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}
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/* No serial number - FT232B without (or with blank) EEPROM fitted */
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return FTDI_CHIP_FT232B;
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case 0x0400:
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return FTDI_CHIP_FT232B;
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case 0x0500:
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return FTDI_CHIP_FT2232D;
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case 0x0600:
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return FTDI_CHIP_FT232R;
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case 0x0700:
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return FTDI_CHIP_FT2232H;
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case 0x0800:
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return FTDI_CHIP_FT4232H;
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case 0x0900:
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return FTDI_CHIP_FT232H;
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case 0x1000:
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return FTDI_CHIP_X_SERIES;
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default:
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return FTDI_CHIP_UNKNOWN;
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}
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}
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static FTDI_INTERFACE
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endpoint_to_interface(usb_conv_info_t *usb_conv_info)
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{
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switch (usb_conv_info->endpoint)
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{
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case 0x01: /* A OUT */
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case 0x02: /* A IN */
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return FTDI_INTERFACE_A;
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case 0x03: /* B OUT */
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case 0x04: /* B IN */
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return FTDI_INTERFACE_B;
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case 0x05: /* C OUT */
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case 0x06: /* C IN */
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return FTDI_INTERFACE_C;
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case 0x07: /* D OUT */
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case 0x08: /* D IN */
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return FTDI_INTERFACE_D;
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default:
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return FTDI_INTERFACE_UNKNOWN;
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}
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}
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static gint
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dissect_request_reset(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
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{
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gint offset_start = offset;
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proto_tree_add_item(tree, hf_setup_lvalue_purge, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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return offset - offset_start;
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}
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static gint
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dissect_request_modem_ctrl(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
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{
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static const int *lvalue_bits[] = {
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&hf_setup_lvalue_dtr,
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&hf_setup_lvalue_rts,
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NULL
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};
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static const int *hvalue_bits[] = {
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&hf_setup_hvalue_dtr,
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&hf_setup_hvalue_rts,
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NULL
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};
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gint offset_start = offset;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_lvalue,
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ett_modem_ctrl_lvalue, lvalue_bits, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_hvalue,
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ett_modem_ctrl_hvalue, hvalue_bits, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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return offset - offset_start;
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}
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static gint
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dissect_request_set_flow_ctrl(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
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{
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static const int *hindex_bits[] = {
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&hf_setup_hindex_rts_cts,
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&hf_setup_hindex_dtr_dsr,
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&hf_setup_hindex_xon_xoff,
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NULL
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};
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gint offset_start = offset;
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proto_tree_add_item(tree, hf_setup_lvalue_xon_char, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hvalue_xoff_char, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_hindex,
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ett_flow_ctrl_hindex, hindex_bits, ENC_LITTLE_ENDIAN);
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offset++;
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return offset - offset_start;
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}
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static gint
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dissect_request_set_baud_rate(tvbuff_t *tvb, packet_info *pinfo, gint offset, proto_tree *tree, FTDI_CHIP chip)
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{
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static const int *lindex_bits[] = {
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&hf_setup_lindex_baud_high,
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NULL
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};
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static const int *hindex_bits[] = {
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&hf_setup_hindex_baud_high,
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NULL
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};
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static const int *hindex_bits_hispeed[] = {
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&hf_setup_hindex_baud_high,
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&hf_setup_hindex_baud_clock_divide,
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NULL
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};
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gint offset_start = offset;
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proto_tree_add_item(tree, hf_setup_lvalue_baud_low, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hvalue_baud_mid, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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switch (chip)
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{
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case FTDI_CHIP_FT8U232AM:
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proto_tree_add_item(tree, hf_setup_lindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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break;
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case FTDI_CHIP_FT232B:
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case FTDI_CHIP_FT232R:
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_lindex,
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ett_baudrate_lindex, lindex_bits, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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break;
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case FTDI_CHIP_FT2232D:
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case FTDI_CHIP_X_SERIES:
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proto_tree_add_item(tree, hf_setup_lindex_port_ab, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_hindex,
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ett_baudrate_hindex, hindex_bits, ENC_LITTLE_ENDIAN);
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offset++;
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break;
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case FTDI_CHIP_FT2232H:
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case FTDI_CHIP_FT4232H:
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case FTDI_CHIP_FT232H:
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proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_hindex,
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ett_baudrate_hindex, hindex_bits_hispeed, ENC_LITTLE_ENDIAN);
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offset++;
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break;
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case FTDI_CHIP_UNKNOWN:
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default:
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proto_tree_add_expert(tree, pinfo, &ei_undecoded, tvb, offset, 2);
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offset += 2;
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break;
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}
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return offset - offset_start;
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}
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static gint
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dissect_request_set_data(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
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{
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static const int *hvalue_bits[] = {
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&hf_setup_hvalue_parity,
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&hf_setup_hvalue_stop_bits,
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&hf_setup_hvalue_break_bit,
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NULL
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};
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gint offset_start = offset;
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proto_tree_add_item(tree, hf_setup_lvalue_data_size, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_bitmask(tree, tvb, offset, hf_setup_hvalue,
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ett_setdata_hvalue, hvalue_bits, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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return offset - offset_start;
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}
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static gint
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dissect_request_get_modem_stat(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
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{
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gint offset_start = offset;
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proto_tree_add_item(tree, hf_setup_lvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
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offset++;
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|
|
proto_tree_add_item(tree, hf_setup_hvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_request_set_event_char(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lvalue_event_char, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hvalue_trigger, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_request_set_error_char(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lvalue_error_char, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hvalue_error_replacement, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_request_set_lat_timer(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lvalue_latency_time, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_request_get_lat_timer(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hvalue, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_lindex_port_abcd, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_setup_hindex, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_response_get_lat_timer(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
proto_tree_add_item(tree, hf_response_lat_timer, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_modem_status_bytes(tvbuff_t *tvb, packet_info *pinfo _U_, gint offset, proto_tree *tree)
|
|
{
|
|
static const int *modem_status_bits[] = {
|
|
&hf_modem_status_fs_max_packet,
|
|
&hf_modem_status_hs_max_packet,
|
|
&hf_modem_status_cts,
|
|
&hf_modem_status_dsr,
|
|
&hf_modem_status_ri,
|
|
&hf_modem_status_dcd,
|
|
NULL
|
|
};
|
|
static const int *line_status_bits[] = {
|
|
&hf_line_status_receive_overflow,
|
|
&hf_line_status_parity_error,
|
|
&hf_line_status_framing_error,
|
|
&hf_line_status_break_received,
|
|
&hf_line_status_tx_holding_reg_empty,
|
|
&hf_line_status_tx_empty,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask(tree, tvb, offset, hf_modem_status,
|
|
ett_modem_status, modem_status_bits, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_bitmask(tree, tvb, offset, hf_line_status,
|
|
ett_line_status, line_status_bits, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
return 2;
|
|
}
|
|
|
|
static gint
|
|
dissect_ftdi_ft(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
proto_item *main_item;
|
|
proto_tree *main_tree;
|
|
gint offset = 0;
|
|
usb_conv_info_t *usb_conv_info = (usb_conv_info_t *)data;
|
|
request_data_t *request_data = NULL;
|
|
wmem_tree_key_t key[4];
|
|
guint32 k_bus_id;
|
|
guint32 k_device_address;
|
|
|
|
if (!usb_conv_info)
|
|
{
|
|
return offset;
|
|
}
|
|
|
|
if (usb_conv_info->is_setup)
|
|
{
|
|
/* This dissector can only process device Vendor specific setup data */
|
|
if ((USB_TYPE(usb_conv_info->setup_requesttype) != RQT_SETUP_TYPE_VENDOR) ||
|
|
(USB_RECIPIENT(usb_conv_info->setup_requesttype) != RQT_SETUP_RECIPIENT_DEVICE))
|
|
{
|
|
return offset;
|
|
}
|
|
}
|
|
|
|
k_bus_id = usb_conv_info->bus_id;
|
|
k_device_address = usb_conv_info->device_address;
|
|
|
|
key[0].length = 1;
|
|
key[0].key = &k_bus_id;
|
|
key[1].length = 1;
|
|
key[1].key = &k_device_address;
|
|
key[2].length = 1;
|
|
key[2].key = &pinfo->num;
|
|
key[3].length = 0;
|
|
key[3].key = NULL;
|
|
|
|
main_item = proto_tree_add_item(tree, proto_ftdi_ft, tvb, offset, -1, ENC_NA);
|
|
main_tree = proto_item_add_subtree(main_item, ett_ftdi_ft);
|
|
|
|
if (usb_conv_info->transfer_type == URB_CONTROL)
|
|
{
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FTDI FT");
|
|
col_set_str(pinfo->cinfo, COL_INFO, "FTDI FT ");
|
|
col_append_str(pinfo->cinfo, COL_INFO, usb_conv_info->is_request ? "Request" : "Response");
|
|
|
|
if (usb_conv_info->is_setup)
|
|
{
|
|
gint bytes_dissected;
|
|
guint8 brequest;
|
|
|
|
brequest = tvb_get_guint8(tvb, offset);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ": %s",
|
|
val_to_str_ext_const(brequest, &request_vals_ext, "Unknown"));
|
|
proto_tree_add_item(main_tree, hf_setup_brequest, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
switch (brequest)
|
|
{
|
|
case REQUEST_RESET:
|
|
bytes_dissected = dissect_request_reset(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_MODEM_CTRL:
|
|
bytes_dissected = dissect_request_modem_ctrl(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_SET_FLOW_CTRL:
|
|
bytes_dissected = dissect_request_set_flow_ctrl(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_SET_BAUD_RATE:
|
|
{
|
|
FTDI_CHIP chip = identify_chip(usb_conv_info);
|
|
bytes_dissected = dissect_request_set_baud_rate(tvb, pinfo, offset, main_tree, chip);
|
|
break;
|
|
}
|
|
case REQUEST_SET_DATA:
|
|
bytes_dissected = dissect_request_set_data(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_GET_MODEM_STAT:
|
|
bytes_dissected = dissect_request_get_modem_stat(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_SET_EVENT_CHAR:
|
|
bytes_dissected = dissect_request_set_event_char(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_SET_ERROR_CHAR:
|
|
bytes_dissected = dissect_request_set_error_char(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_SET_LAT_TIMER:
|
|
bytes_dissected = dissect_request_set_lat_timer(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_GET_LAT_TIMER:
|
|
bytes_dissected = dissect_request_get_lat_timer(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
default:
|
|
bytes_dissected = 0;
|
|
break;
|
|
}
|
|
|
|
offset += bytes_dissected;
|
|
if (bytes_dissected < 4)
|
|
{
|
|
proto_tree_add_expert(main_tree, pinfo, &ei_undecoded, tvb, offset, 4 - bytes_dissected);
|
|
offset += 4 - bytes_dissected;
|
|
}
|
|
|
|
proto_tree_add_item(main_tree, hf_setup_wlength, tvb, offset, 2, ENC_LITTLE_ENDIAN);
|
|
offset += 2;
|
|
|
|
/* Record the request type so we can find it when dissecting response */
|
|
request_data = wmem_new(wmem_file_scope(), request_data_t);
|
|
request_data->bus_id = usb_conv_info->bus_id;
|
|
request_data->device_address = usb_conv_info->device_address;
|
|
request_data->request = brequest;
|
|
wmem_tree_insert32_array(request_info, key, request_data);
|
|
}
|
|
else
|
|
{
|
|
/* Retrieve request type */
|
|
request_data = (request_data_t *)wmem_tree_lookup32_array_le(request_info, key);
|
|
if (request_data && request_data->bus_id == k_bus_id && request_data->device_address == k_device_address)
|
|
{
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ": %s",
|
|
val_to_str_ext_const(request_data->request, &request_vals_ext, "Unknown"));
|
|
|
|
switch (request_data->request)
|
|
{
|
|
case REQUEST_GET_MODEM_STAT:
|
|
offset += dissect_modem_status_bytes(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
case REQUEST_GET_LAT_TIMER:
|
|
offset += dissect_response_get_lat_timer(tvb, pinfo, offset, main_tree);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
col_append_str(pinfo->cinfo, COL_INFO, ": Unknown");
|
|
}
|
|
|
|
/* Report any potentially undissected response data */
|
|
if (tvb_reported_length_remaining(tvb, offset) > 0)
|
|
{
|
|
proto_tree_add_expert(main_tree, pinfo, &ei_undecoded, tvb, offset, -1);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const char *interface_str;
|
|
FTDI_INTERFACE interface;
|
|
gint payload_hf, rx_hf, tx_hf;
|
|
gint bytes;
|
|
|
|
interface = endpoint_to_interface(usb_conv_info);
|
|
switch (interface)
|
|
{
|
|
case FTDI_INTERFACE_A:
|
|
interface_str = "A";
|
|
rx_hf = hf_if_a_rx_payload;
|
|
tx_hf = hf_if_a_tx_payload;
|
|
break;
|
|
case FTDI_INTERFACE_B:
|
|
interface_str = "B";
|
|
rx_hf = hf_if_b_rx_payload;
|
|
tx_hf = hf_if_b_tx_payload;
|
|
break;
|
|
case FTDI_INTERFACE_C:
|
|
interface_str = "C";
|
|
rx_hf = hf_if_c_rx_payload;
|
|
tx_hf = hf_if_c_tx_payload;
|
|
break;
|
|
case FTDI_INTERFACE_D:
|
|
interface_str = "D";
|
|
rx_hf = hf_if_d_rx_payload;
|
|
tx_hf = hf_if_d_tx_payload;
|
|
break;
|
|
default:
|
|
return offset;
|
|
}
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FTDI FT");
|
|
if (usb_conv_info->direction == P2P_DIR_RECV)
|
|
{
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "INTERFACE %s RX", interface_str);
|
|
/* First two bytes are status */
|
|
offset += dissect_modem_status_bytes(tvb, pinfo, offset, main_tree);
|
|
payload_hf = rx_hf;
|
|
}
|
|
else
|
|
{
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "INTERFACE %s TX", interface_str);
|
|
payload_hf = tx_hf;
|
|
}
|
|
bytes = tvb_reported_length_remaining(tvb, offset);
|
|
if (bytes > 0)
|
|
{
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, " %d bytes", bytes);
|
|
proto_tree_add_item(main_tree, payload_hf, tvb, offset, bytes, ENC_NA);
|
|
offset += bytes;
|
|
}
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
void
|
|
proto_register_ftdi_ft(void)
|
|
{
|
|
expert_module_t *expert_module;
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_setup_brequest,
|
|
{ "Request", "ftdift.bRequest",
|
|
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &request_vals_ext, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue,
|
|
{ "lValue", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_purge,
|
|
{ "lValue", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, VALS(reset_purge_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_dtr,
|
|
{ "DTR Active", "ftdift.lValue.b0",
|
|
FT_BOOLEAN, 8, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_rts,
|
|
{ "RTS Active", "ftdift.lValue.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_xon_char,
|
|
{ "XON Char", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_baud_low,
|
|
{ "Baud low", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_data_size,
|
|
{ "Data Size", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, VALS(data_size_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_event_char,
|
|
{ "Event Char", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_error_char,
|
|
{ "Parity Error Char", "ftdift.lValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lvalue_latency_time,
|
|
{ "Latency Time", "ftdift.lValue",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Latency time in milliseconds", HFILL }
|
|
},
|
|
{ &hf_setup_hvalue,
|
|
{ "hValue", "ftdift.hValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_dtr,
|
|
{ "en DTR for writing", "ftdift.hValue.b0",
|
|
FT_BOOLEAN, 8, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_rts,
|
|
{ "en RTS for writing", "ftdift.hValue.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_xoff_char,
|
|
{ "XOFF Char", "ftdift.hValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_baud_mid,
|
|
{ "Baud mid", "ftdift.hValue",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_parity,
|
|
{ "Parity", "ftdift.hValue.parity",
|
|
FT_UINT8, BASE_HEX, VALS(parity_vals), (0x7 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_stop_bits,
|
|
{ "Stop Bits", "ftdift.hValue.b4",
|
|
FT_UINT8, BASE_HEX, VALS(stop_bits_vals), (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_break_bit,
|
|
{ "Break Bit", "ftdift.hValue.b6",
|
|
FT_UINT8, BASE_HEX, VALS(break_bit_vals), (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_trigger,
|
|
{ "hValue", "ftdift.hValue",
|
|
FT_UINT8, BASE_HEX, VALS(event_char_trigger_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hvalue_error_replacement,
|
|
{ "hValue", "ftdift.hValue",
|
|
FT_UINT8, BASE_HEX, VALS(error_replacement_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lindex,
|
|
{ "lIndex", "ftdift.lIndex",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lindex_port_ab,
|
|
{ "lIndex", "ftdift.lIndex",
|
|
FT_UINT8, BASE_HEX, VALS(index_port_ab_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lindex_port_abcd,
|
|
{ "lIndex", "ftdift.lIndex",
|
|
FT_UINT8, BASE_HEX, VALS(index_port_abcd_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_lindex_baud_high,
|
|
{ "Baud High", "ftdift.lIndex.b0",
|
|
FT_UINT8, BASE_HEX, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex,
|
|
{ "hIndex", "ftdift.hIndex",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex_rts_cts,
|
|
{ "RTS/CTS Flow Control", "ftdift.hIndex.b0",
|
|
FT_BOOLEAN, 8, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex_dtr_dsr,
|
|
{ "DTR/DSR Flow Control", "ftdift.hIndex.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex_xon_xoff,
|
|
{ "XON/XOFF Flow Control", "ftdift.hIndex.b2",
|
|
FT_BOOLEAN, 8, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex_baud_high,
|
|
{ "Baud High", "ftdift.hIndex.b0",
|
|
FT_UINT8, BASE_HEX, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_setup_hindex_baud_clock_divide,
|
|
{ "Baud Clock Divide off", "ftdift.hIndex.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
"When active 120 MHz is max frequency instead of 48 MHz", HFILL }
|
|
},
|
|
{ &hf_setup_wlength,
|
|
{ "wLength", "ftdift.wLength",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_response_lat_timer,
|
|
{ "Latency Time", "ftdift.latency_time",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Latency time in milliseconds", HFILL }
|
|
},
|
|
{ &hf_modem_status,
|
|
{ "Modem Status", "ftdift.modem_status",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_fs_max_packet,
|
|
{ "Full Speed 64 byte MAX packet", "ftdift.modem_status.b0",
|
|
FT_BOOLEAN, 8, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_hs_max_packet,
|
|
{ "High Speed 512 byte MAX packet", "ftdift.modem_status.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_cts,
|
|
{ "CTS", "ftdift.modem_status.b4",
|
|
FT_BOOLEAN, 8, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_dsr,
|
|
{ "DSR", "ftdift.modem_status.b5",
|
|
FT_BOOLEAN, 8, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_ri,
|
|
{ "RI", "ftdift.modem_status.b6",
|
|
FT_BOOLEAN, 8, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_modem_status_dcd,
|
|
{ "DCD", "ftdift.modem_status.b7",
|
|
FT_BOOLEAN, 8, NULL, (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status,
|
|
{ "Line Status", "ftdift.line_status",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_receive_overflow,
|
|
{ "Receive Overflow Error", "ftdift.line_status.b1",
|
|
FT_BOOLEAN, 8, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_parity_error,
|
|
{ "Parity Error", "ftdift.line_status.b2",
|
|
FT_BOOLEAN, 8, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_framing_error,
|
|
{ "Framing Error", "ftdift.line_status.b3",
|
|
FT_BOOLEAN, 8, NULL, (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_break_received,
|
|
{ "Break Received", "ftdift.line_status.b4",
|
|
FT_BOOLEAN, 8, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_tx_holding_reg_empty,
|
|
{ "Transmitter Holding Register Empty", "ftdift.line_status.b5",
|
|
FT_BOOLEAN, 8, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_line_status_tx_empty,
|
|
{ "Transmitter Empty", "ftdift.line_status.b6",
|
|
FT_BOOLEAN, 8, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_if_a_rx_payload,
|
|
{ "A RX payload", "ftdift.if_a_rx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data received on interface A", HFILL }
|
|
},
|
|
{ &hf_if_a_tx_payload,
|
|
{ "A TX payload", "ftdift.if_a_tx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data to transmit on interface A", HFILL }
|
|
},
|
|
{ &hf_if_b_rx_payload,
|
|
{ "B RX payload", "ftdift.if_b_rx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data received on interface B", HFILL }
|
|
},
|
|
{ &hf_if_b_tx_payload,
|
|
{ "B TX payload", "ftdift.if_b_tx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data to transmit on interface B", HFILL }
|
|
},
|
|
{ &hf_if_c_rx_payload,
|
|
{ "C RX payload", "ftdift.if_c_rx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data received on interface C", HFILL }
|
|
},
|
|
{ &hf_if_c_tx_payload,
|
|
{ "C TX payload", "ftdift.if_c_tx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data to transmit on interface C", HFILL }
|
|
},
|
|
{ &hf_if_d_rx_payload,
|
|
{ "D RX payload", "ftdift.if_d_rx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data received on interface D", HFILL }
|
|
},
|
|
{ &hf_if_d_tx_payload,
|
|
{ "D TX payload", "ftdift.if_d_tx_payload",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Data to transmit on interface D", HFILL }
|
|
},
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_undecoded, { "ftdift.undecoded", PI_UNDECODED, PI_WARN, "Not dissected yet (report to wireshark.org)", EXPFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_ftdi_ft,
|
|
&ett_modem_ctrl_lvalue,
|
|
&ett_modem_ctrl_hvalue,
|
|
&ett_flow_ctrl_hindex,
|
|
&ett_baudrate_lindex,
|
|
&ett_baudrate_hindex,
|
|
&ett_setdata_hvalue,
|
|
&ett_modem_status,
|
|
&ett_line_status,
|
|
};
|
|
|
|
request_info = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
|
|
|
|
proto_ftdi_ft = proto_register_protocol("FTDI FT USB", "FTDI FT", "ftdift");
|
|
proto_register_field_array(proto_ftdi_ft, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
ftdi_ft_handle = register_dissector("ftdift", dissect_ftdi_ft, proto_ftdi_ft);
|
|
|
|
expert_module = expert_register_protocol(proto_ftdi_ft);
|
|
expert_register_field_array(expert_module, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_ftdi_ft(void)
|
|
{
|
|
/* TODO: Add configuration option to specify VID and PID.
|
|
* The values below denote default VID/PID of FT converters (as of 2019)
|
|
* The VID and PID can be changed by hardware vendor.
|
|
*/
|
|
dissector_add_uint("usb.product", (0x0403 << 16) | 0x6001, ftdi_ft_handle);
|
|
dissector_add_uint("usb.product", (0x0403 << 16) | 0x6010, ftdi_ft_handle);
|
|
dissector_add_uint("usb.product", (0x0403 << 16) | 0x6011, ftdi_ft_handle);
|
|
dissector_add_uint("usb.product", (0x0403 << 16) | 0x6014, ftdi_ft_handle);
|
|
dissector_add_uint("usb.product", (0x0403 << 16) | 0x6015, ftdi_ft_handle);
|
|
|
|
dissector_add_for_decode_as("usb.device", ftdi_ft_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|