forked from osmocom/wireshark
1711 lines
62 KiB
C
1711 lines
62 KiB
C
/* packet-ftdi-mpsse.c
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* Routines for FTDI Multi-Protocol Synchronous Serial Engine dissection
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*
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* Copyright 2020 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/expert.h>
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#include <wsutil/str_util.h>
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#include "packet-ftdi-ft.h"
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static int proto_ftdi_mpsse = -1;
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static gint hf_mpsse_command = -1;
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/* Data Shifting commands bits (b0-b6 are relevant only if b7 is 0) */
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static gint hf_mpsse_command_b0 = -1;
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static gint hf_mpsse_command_b1 = -1;
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static gint hf_mpsse_command_b2 = -1;
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static gint hf_mpsse_command_b3 = -1;
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static gint hf_mpsse_command_b4 = -1;
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static gint hf_mpsse_command_b5 = -1;
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static gint hf_mpsse_command_b6 = -1;
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static gint hf_mpsse_command_b7 = -1;
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static gint hf_mpsse_command_with_parameters = -1;
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static gint hf_mpsse_bad_command_error = -1;
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static gint hf_mpsse_bad_command_code = -1;
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static gint hf_mpsse_response = -1;
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static gint hf_mpsse_command_in = -1;
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static gint hf_mpsse_response_in = -1;
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static gint hf_mpsse_length_uint8 = -1;
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static gint hf_mpsse_length_uint16 = -1;
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static gint hf_mpsse_bytes_out = -1;
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static gint hf_mpsse_bytes_in = -1;
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static gint hf_mpsse_bits_out = -1;
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static gint hf_mpsse_bits_in = -1;
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static gint hf_mpsse_value = -1;
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static gint hf_mpsse_value_b0 = -1;
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static gint hf_mpsse_value_b1 = -1;
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static gint hf_mpsse_value_b2 = -1;
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static gint hf_mpsse_value_b3 = -1;
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static gint hf_mpsse_value_b4 = -1;
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static gint hf_mpsse_value_b5 = -1;
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static gint hf_mpsse_value_b6 = -1;
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static gint hf_mpsse_value_b7 = -1;
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static gint hf_mpsse_direction = -1;
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static gint hf_mpsse_direction_b0 = -1;
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static gint hf_mpsse_direction_b1 = -1;
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static gint hf_mpsse_direction_b2 = -1;
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static gint hf_mpsse_direction_b3 = -1;
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static gint hf_mpsse_direction_b4 = -1;
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static gint hf_mpsse_direction_b5 = -1;
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static gint hf_mpsse_direction_b6 = -1;
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static gint hf_mpsse_direction_b7 = -1;
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static gint hf_mpsse_cpumode_address_short = -1;
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static gint hf_mpsse_cpumode_address_extended = -1;
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static gint hf_mpsse_cpumode_data = -1;
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static gint hf_mpsse_clk_divisor = -1;
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static gint hf_mpsse_open_drain_enable_low = -1;
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static gint hf_mpsse_open_drain_enable_low_b0 = -1;
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static gint hf_mpsse_open_drain_enable_low_b1 = -1;
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static gint hf_mpsse_open_drain_enable_low_b2 = -1;
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static gint hf_mpsse_open_drain_enable_low_b3 = -1;
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static gint hf_mpsse_open_drain_enable_low_b4 = -1;
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static gint hf_mpsse_open_drain_enable_low_b5 = -1;
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static gint hf_mpsse_open_drain_enable_low_b6 = -1;
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static gint hf_mpsse_open_drain_enable_low_b7 = -1;
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static gint hf_mpsse_open_drain_enable_high = -1;
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static gint hf_mpsse_open_drain_enable_high_b0 = -1;
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static gint hf_mpsse_open_drain_enable_high_b1 = -1;
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static gint hf_mpsse_open_drain_enable_high_b2 = -1;
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static gint hf_mpsse_open_drain_enable_high_b3 = -1;
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static gint hf_mpsse_open_drain_enable_high_b4 = -1;
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static gint hf_mpsse_open_drain_enable_high_b5 = -1;
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static gint hf_mpsse_open_drain_enable_high_b6 = -1;
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static gint hf_mpsse_open_drain_enable_high_b7 = -1;
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static gint ett_ftdi_mpsse = -1;
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static gint ett_mpsse_command = -1;
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static gint ett_mpsse_command_with_parameters = -1;
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static gint ett_mpsse_response_data = -1;
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static gint ett_mpsse_value = -1;
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static gint ett_mpsse_direction = -1;
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static gint ett_mpsse_open_drain_enable = -1;
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static gint ett_mpsse_skipped_response_data = -1;
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static expert_field ei_undecoded = EI_INIT;
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static expert_field ei_response_without_command = EI_INIT;
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static expert_field ei_skipped_response_data = EI_INIT;
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static expert_field ei_reassembly_unavailable = EI_INIT;
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static dissector_handle_t ftdi_mpsse_handle;
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/* Commands expecting response add command_data_t entry to a list. The list is created when first command
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* appears on MPSSE instance TX or when previously created list has matched responses to all entries.
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* When a new list is created, head pointer is inserted into both tx_command_info and rx_command_info tree.
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*
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* When RX packet is dissected, it obtains the pointer to a list (if there isn't any then the capture is
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* incomplete/malformed and ei_response_without_command is presented to the user). The RX dissection code
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* matches commands with responses and updates the response_in_packet and is_response_set flag. When next
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* RX packet is being dissected, it skips all the command_data_t entries that have is_response_set flag set.
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* To reduce the effective list length that needs to be traversed, a pointer to the first element that does
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* not have is_response_set flag set, is added to rx_command_info with the current packet number in the key.
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*
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* After first pass, RX packets always obtain relevant command_data_t entry without traversing the list.
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* If there wasn't a separate tree TX packets (tx_command_info), TX packet dissection would have to to
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* traverse the list from the pointer obtained from rx_command_info. In normal conditions the number of
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* entries to skip in such case is low. However, when the capture file has either:
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* * A lot of TX packets with commands expecting response but no RX packets, or
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* * Bad Command in TX packet that does not have matching Bad Command response in RX data
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* then the traversal time in TX packet dissection becomes significant. To bring performance to acceptable
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* levels, tx_command_info tree is being used. It contains pointers to the same list as rx_command_info but
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* allows TX dissection to obtain the relevant command_data_t entry without traversing the list.
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*/
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static wmem_tree_t *rx_command_info = NULL;
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static wmem_tree_t *tx_command_info = NULL;
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typedef struct _command_data command_data_t;
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struct _command_data {
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ftdi_mpsse_info_t mpsse_info;
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/* TRUE if complete command parameters were not dissected yet */
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gboolean preliminary;
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/* TRUE if response_in_packet has been set (response packet is known) */
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gboolean is_response_set;
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guint8 cmd;
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gint32 response_length;
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guint32 command_in_packet;
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guint32 response_in_packet;
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command_data_t *next;
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};
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void proto_register_ftdi_mpsse(void);
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#define BAD_COMMAND_SYNC_CODE 0xFA
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#define CMD_SET_DATA_BITS_LOW_BYTE 0x80
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#define CMD_READ_DATA_BITS_LOW_BYTE 0x81
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#define CMD_SET_DATA_BITS_HIGH_BYTE 0x82
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#define CMD_READ_DATA_BITS_HIGH_BYTE 0x83
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#define CMD_CLOCK_SET_DIVISOR 0x86
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#define CMD_CLOCK_N_BITS 0x8E
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#define CMD_CLOCK_N_TIMES_8_BITS 0x8F
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#define CMD_CPUMODE_READ_SHORT_ADDR 0x90
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#define CMD_CPUMODE_READ_EXT_ADDR 0x91
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#define CMD_CPUMODE_WRITE_SHORT_ADDR 0x92
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#define CMD_CPUMODE_WRITE_EXT_ADDR 0x93
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#define CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_HIGH 0x9C
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#define CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_LOW 0x9D
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#define CMD_IO_OPEN_DRAIN_ENABLE 0x9E
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static const value_string command_vals[] = {
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{0x10, "Clock Data Bytes Out on + ve clock edge MSB first(no read) [Use if CLK starts at '1']"},
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{0x11, "Clock Data Bytes Out on -ve clock edge MSB first (no read) [Use if CLK starts at '0']"},
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{0x12, "Clock Data Bits Out on +ve clock edge MSB first (no read) [Use if CLK starts at '1']"},
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{0x13, "Clock Data Bits Out on -ve clock edge MSB first (no read) [Use if CLK starts at '0']"},
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{0x18, "Clock Data Bytes Out on +ve clock edge LSB first (no read) [Use if CLK starts at '1']"},
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{0x19, "Clock Data Bytes Out on -ve clock edge LSB first (no read) [Use if CLK starts at '0']"},
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{0x1A, "Clock Data Bits Out on +ve clock edge LSB first (no read) [Use if CLK starts at '1']"},
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{0x1B, "Clock Data Bits Out on -ve clock edge LSB first (no read) [Use if CLK starts at '0']"},
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{0x20, "Clock Data Bytes In on +ve clock edge MSB first (no write)"},
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{0x22, "Clock Data Bits In on +ve clock edge MSB first (no write) [TDO/DI sampled just prior to rising edge]"},
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{0x24, "Clock Data Bytes In on -ve clock edge MSB first (no write)"},
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{0x26, "Clock Data Bits In on -ve clock edge MSB first (no write) [TDO/DI sampled just prior to falling edge]"},
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{0x28, "Clock Data Bytes In on +ve clock edge LSB first (no write)"},
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{0x2A, "Clock Data Bits In on +ve clock edge LSB first (no write) [TDO/DI sampled just prior to rising edge]"},
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{0x2C, "Clock Data Bytes In on -ve clock edge LSB first (no write)"},
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{0x2E, "Clock Data Bits In on -ve clock edge LSB first (no write) [TDO/DI sampled just prior to falling edge]"},
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{0x31, "Clock Data Bytes In and Out MSB first [out on -ve edge, in on +ve edge]"},
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{0x33, "Clock Data Bits In and Out MSB first [out on -ve edge, in on +ve edge]"},
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{0x34, "Clock Data Bytes In and Out MSB first [out on +ve edge, in on -ve edge]"},
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{0x36, "Clock Data Bits In and Out MSB first [out on +ve edge, in on -ve edge]"},
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{0x39, "Clock Data Bytes In and Out LSB first [out on -ve edge, in on +ve edge]"},
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{0x3B, "Clock Data Bits In and Out LSB first [out on -ve edge, in on +ve edge]"},
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{0x3C, "Clock Data Bytes In and Out LSB first [out on +ve edge, in on -ve edge]"},
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{0x3E, "Clock Data Bits In and Out LSB first [out on +ve edge, in on -ve edge]"},
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{0x4A, "Clock Data to TMS pin (no read) [TMS with LSB first on +ve clk edge - use if clk is set to '1']"},
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{0x4B, "Clock Data to TMS pin (no read) [TMS with LSB first on -ve clk edge - use if clk is set to '0']"},
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{0x6A, "Clock Data to TMS pin with read [TMS with LSB first on +ve clk edge, read on +ve edge - use if clk is set to '1']"},
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{0x6B, "Clock Data to TMS pin with read [TMS with LSB first on -ve clk edge, read on +ve edge - use if clk is set to '0']"},
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{0x6E, "Clock Data to TMS pin with read [TMS with LSB first on +ve clk edge, read on -ve edge - use if clk is set to '1']"},
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{0x6F, "Clock Data to TMS pin with read [TMS with LSB first on -ve clk edge, read on -ve edge - use if clk is set to '0']"},
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{CMD_SET_DATA_BITS_LOW_BYTE, "Set Data bits LowByte"},
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{CMD_READ_DATA_BITS_LOW_BYTE, "Read Data bits LowByte"},
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{CMD_SET_DATA_BITS_HIGH_BYTE, "Set Data bits HighByte"},
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{CMD_READ_DATA_BITS_HIGH_BYTE, "Read Data bits HighByte"},
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{0x84, "Connect TDI to TDO for Loopback"},
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{0x85, "Disconnect TDI to TDO for Loopback"},
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{0x87, "Send Immediate (flush buffer back to the PC)"},
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{0x88, "Wait On I/O High (wait until GPIOL1 (JTAG) or I/O1 (CPU) is high)"},
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{0x89, "Wait On I/O Low (wait until GPIOL1 (JTAG) or I/O1 (CPU) is low)"},
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{0, NULL}
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};
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static value_string_ext command_vals_ext = VALUE_STRING_EXT_INIT(command_vals);
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static const value_string cpumode_command_vals[] = {
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{CMD_CPUMODE_READ_SHORT_ADDR, "CPUMode Read Short Address"},
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{CMD_CPUMODE_READ_EXT_ADDR, "CPUMode Read Extended Address"},
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{CMD_CPUMODE_WRITE_SHORT_ADDR, "CPUMode Write Short Address"},
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{CMD_CPUMODE_WRITE_EXT_ADDR, "CPUMode Write Extended Address"},
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{0, NULL}
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};
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static value_string_ext cpumode_command_vals_ext = VALUE_STRING_EXT_INIT(cpumode_command_vals);
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static const value_string ft2232d_only_command_vals[] = {
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{CMD_CLOCK_SET_DIVISOR, "Set TCK/SK Divisor"},
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{0, NULL}
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};
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/* FT232H, FT2232H and FT4232H only commands */
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static const value_string h_only_command_vals[] = {
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{CMD_CLOCK_SET_DIVISOR, "Set clk divisor"},
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{0x8A, "Disable Clk Divide by 5"},
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{0x8B, "Enable Clk Divide by 5"},
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{0x8C, "Enable 3 Phase Data Clocking"},
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{0x8D, "Disable 3 Phase Data Clocking"},
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{CMD_CLOCK_N_BITS, "Clock For n bits with no data transfer"},
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{CMD_CLOCK_N_TIMES_8_BITS, "Clock For n x 8 bits with no data transfer"},
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{0x94, "Clk continuously and Wait On I/O High"},
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{0x95, "Clk continuously and Wait On I/O Low"},
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{0x96, "Turn On Adaptive clocking"},
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{0x97, "Turn Off Adaptive clocking"},
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{CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_HIGH, "Clock For n x 8 bits with no data transfer or Until GPIOL1 is High"},
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{CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_LOW, "Clock For n x 8 bits with no data transfer or Until GPIOL1 is Low"},
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{0, NULL}
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};
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static value_string_ext h_only_command_vals_ext = VALUE_STRING_EXT_INIT(h_only_command_vals);
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static const value_string ft232h_only_command_vals[] = {
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{CMD_IO_OPEN_DRAIN_ENABLE, "Set I/O to only drive on a '0' and tristate on a '1'"},
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{0, NULL}
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};
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static const value_string data_shifting_command_b1_vals[] = {
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{0, "Byte mode"},
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{1, "Bit mode"},
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{0, NULL}
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};
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static const value_string data_shifting_command_b3_vals[] = {
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{0, "MSB first"},
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{1, "LSB first"},
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{0, NULL}
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};
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static const value_string command_b7_vals[] = {
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{0, "Data Shifting Command"},
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{1, "Other (Not Data Shifting) Command"},
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{0, NULL}
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};
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#define IS_DATA_SHIFTING_COMMAND_BIT_ACTIVE(cmd) ((cmd & (1u << 7)) == 0)
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#define IS_DATA_SHIFTING_BYTE_MODE(cmd) ((cmd & (1u << 1)) == 0)
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#define IS_DATA_SHIFTING_MSB_FIRST(cmd) ((cmd & (1u << 3)) == 0)
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#define IS_DATA_SHIFTING_WRITING_TDI(cmd) (cmd & (1u << 4))
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#define IS_DATA_SHIFTING_READING_TDO(cmd) (cmd & (1u << 5))
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#define IS_DATA_SHIFTING_WRITING_TMS(cmd) (cmd & (1u << 6))
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static gboolean is_data_shifting_command(guint8 cmd)
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{
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switch (cmd)
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{
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/* Not all data shifting commands (with bit 7 clear) are explicitly listed in MPSSE documentation
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* Some undocumented data shifting commands trigger BadCommmand response, but some seem to be handled by the device.
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*
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* Commands listed below (with bit 7 clear) trigger BadCommand response on FT2232L, FT232H and FT2232H
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*/
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case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: case 0x08: case 0x09: case 0x0A: case 0x0B: case 0x0C: case 0x0D: case 0x0E: case 0x0F:
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case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47: case 0x48: case 0x49:
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case 0x4C: case 0x4D:
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case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: case 0x58: case 0x59:
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case 0x5C: case 0x5D:
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case 0x60: case 0x61:
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case 0x64: case 0x65:
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case 0x68: case 0x69:
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case 0x6C: case 0x6D:
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case 0x70: case 0x71:
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case 0x74: case 0x75:
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case 0x78: case 0x79:
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case 0x7C: case 0x7D:
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return FALSE;
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default:
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return IS_DATA_SHIFTING_COMMAND_BIT_ACTIVE(cmd);
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}
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}
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static gboolean is_data_shifting_command_returning_response(guint8 cmd, ftdi_mpsse_info_t *mpsse_info)
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{
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DISSECTOR_ASSERT(is_data_shifting_command(cmd));
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if (mpsse_info->mcu_mode)
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{
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/* MCU mode seems to consume data shifting payloads but do not actually return any response data */
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return FALSE;
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}
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return IS_DATA_SHIFTING_READING_TDO(cmd) ? TRUE : FALSE;
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}
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/* Returns human-readable command description string or NULL on BadCommand */
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static const char *
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get_command_string(guint8 cmd, ftdi_mpsse_info_t *mpsse_info)
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{
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const char *str;
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/* First, try commands that are common on all chips */
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str = try_val_to_str_ext(cmd, &command_vals_ext);
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if (str)
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{
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return str;
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}
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if (is_data_shifting_command(cmd))
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{
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return "Undocumented Data Shifting Command";
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}
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/* Check chip specific commands */
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switch (mpsse_info->chip)
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{
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case FTDI_CHIP_FT2232D:
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str = try_val_to_str(cmd, ft2232d_only_command_vals);
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break;
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case FTDI_CHIP_FT232H:
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str = try_val_to_str(cmd, ft232h_only_command_vals);
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if (str)
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{
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break;
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}
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/* Fallthrough */
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case FTDI_CHIP_FT2232H:
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case FTDI_CHIP_FT4232H:
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str = try_val_to_str_ext(cmd, &h_only_command_vals_ext);
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break;
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default:
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break;
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}
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if (!str && mpsse_info->mcu_mode)
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{
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str = try_val_to_str_ext(cmd, &cpumode_command_vals_ext);
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|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
static gboolean is_valid_command(guint8 cmd, ftdi_mpsse_info_t *mpsse_info)
|
|
{
|
|
return get_command_string(cmd, mpsse_info) != NULL;
|
|
}
|
|
|
|
static gboolean is_same_mpsse_instance(ftdi_mpsse_info_t *info1, ftdi_mpsse_info_t *info2)
|
|
{
|
|
return (info1->bus_id == info2->bus_id) &&
|
|
(info1->device_address == info2->device_address) &&
|
|
(info1->chip == info2->chip) &&
|
|
(info1->iface == info2->iface) &&
|
|
(info1->mcu_mode == info2->mcu_mode);
|
|
}
|
|
|
|
static command_data_t *
|
|
get_recorded_command_data(wmem_tree_t *command_tree, packet_info *pinfo, ftdi_mpsse_info_t *mpsse_info)
|
|
{
|
|
guint32 k_bus_id = mpsse_info->bus_id;
|
|
guint32 k_device_address = mpsse_info->device_address;
|
|
guint32 k_chip = (guint32)mpsse_info->chip;
|
|
guint32 k_interface = (guint32)mpsse_info->iface;
|
|
guint32 k_mcu_mode = mpsse_info->mcu_mode;
|
|
wmem_tree_key_t key[] = {
|
|
{1, &k_bus_id},
|
|
{1, &k_device_address},
|
|
{1, &k_chip},
|
|
{1, &k_interface},
|
|
{1, &k_mcu_mode},
|
|
{1, &pinfo->num},
|
|
{0, NULL}
|
|
};
|
|
|
|
command_data_t *data = NULL;
|
|
data = (command_data_t *)wmem_tree_lookup32_array_le(command_tree, key);
|
|
if (data && is_same_mpsse_instance(mpsse_info, &data->mpsse_info))
|
|
{
|
|
return data;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
insert_command_data_pointer(wmem_tree_t *command_tree, packet_info *pinfo, ftdi_mpsse_info_t *mpsse_info, command_data_t *data)
|
|
{
|
|
guint32 k_bus_id = mpsse_info->bus_id;
|
|
guint32 k_device_address = mpsse_info->device_address;
|
|
guint32 k_chip = (guint32)mpsse_info->chip;
|
|
guint32 k_interface = (guint32)mpsse_info->iface;
|
|
guint32 k_mcu_mode = mpsse_info->mcu_mode;
|
|
wmem_tree_key_t key[] = {
|
|
{1, &k_bus_id},
|
|
{1, &k_device_address},
|
|
{1, &k_chip},
|
|
{1, &k_interface},
|
|
{1, &k_mcu_mode},
|
|
{1, &pinfo->num},
|
|
{0, NULL}
|
|
};
|
|
|
|
wmem_tree_insert32_array(command_tree, key, data);
|
|
}
|
|
|
|
static void
|
|
record_command_data(command_data_t **cmd_data, packet_info *pinfo, ftdi_mpsse_info_t *mpsse_info, guint8 cmd,
|
|
gint32 response_length, gboolean preliminary)
|
|
{
|
|
command_data_t *data = *cmd_data;
|
|
|
|
DISSECTOR_ASSERT(response_length > 0);
|
|
|
|
if (data && data->preliminary)
|
|
{
|
|
DISSECTOR_ASSERT(data->cmd == cmd);
|
|
DISSECTOR_ASSERT(data->response_length == response_length);
|
|
data->command_in_packet = pinfo->num;
|
|
data->preliminary = preliminary;
|
|
return;
|
|
}
|
|
|
|
data = wmem_new(wmem_file_scope(), command_data_t);
|
|
memcpy(&data->mpsse_info, mpsse_info, sizeof(ftdi_mpsse_info_t));
|
|
data->preliminary = preliminary;
|
|
data->is_response_set = FALSE;
|
|
data->cmd = cmd;
|
|
data->response_length = response_length;
|
|
data->command_in_packet = pinfo->num;
|
|
data->response_in_packet = 0;
|
|
data->next = NULL;
|
|
|
|
if (*cmd_data && (!(*cmd_data)->is_response_set))
|
|
{
|
|
DISSECTOR_ASSERT((*cmd_data)->next == NULL);
|
|
(*cmd_data)->next = data;
|
|
if ((*cmd_data)->command_in_packet != pinfo->num)
|
|
{
|
|
insert_command_data_pointer(tx_command_info, pinfo, mpsse_info, data);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
insert_command_data_pointer(rx_command_info, pinfo, mpsse_info, data);
|
|
insert_command_data_pointer(tx_command_info, pinfo, mpsse_info, data);
|
|
}
|
|
*cmd_data = data;
|
|
}
|
|
|
|
static void expect_response(command_data_t **cmd_data, packet_info *pinfo, proto_tree *tree,
|
|
ftdi_mpsse_info_t *mpsse_info, guint8 cmd, guint16 response_length)
|
|
{
|
|
if (pinfo->fd->visited)
|
|
{
|
|
DISSECTOR_ASSERT(*cmd_data);
|
|
DISSECTOR_ASSERT((*cmd_data)->cmd == cmd);
|
|
DISSECTOR_ASSERT((*cmd_data)->response_length == response_length);
|
|
if ((*cmd_data)->is_response_set)
|
|
{
|
|
proto_tree *response_in = proto_tree_add_uint(tree, hf_mpsse_response_in, NULL, 0, 0, (*cmd_data)->response_in_packet);
|
|
proto_item_set_generated(response_in);
|
|
DISSECTOR_ASSERT((*cmd_data)->command_in_packet == pinfo->num);
|
|
}
|
|
*cmd_data = (*cmd_data)->next;
|
|
}
|
|
else
|
|
{
|
|
record_command_data(cmd_data, pinfo, mpsse_info, cmd, response_length, FALSE);
|
|
}
|
|
}
|
|
|
|
static gchar* freq_to_str(gfloat freq)
|
|
{
|
|
if (freq < 1e3)
|
|
{
|
|
return ws_strdup_printf("%.12g Hz", freq);
|
|
}
|
|
else if (freq < 1e6)
|
|
{
|
|
return ws_strdup_printf("%.12g kHz", freq / 1e3);
|
|
}
|
|
else
|
|
{
|
|
return ws_strdup_printf("%.12g MHz", freq / 1e6);
|
|
}
|
|
}
|
|
|
|
static gint
|
|
dissect_data_shifting_command_parameters(guint8 cmd, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset,
|
|
ftdi_mpsse_info_t *mpsse_info, command_data_t **cmd_data)
|
|
{
|
|
gint offset_start = offset;
|
|
gint32 length;
|
|
|
|
DISSECTOR_ASSERT(is_data_shifting_command(cmd));
|
|
|
|
if (IS_DATA_SHIFTING_BYTE_MODE(cmd))
|
|
{
|
|
length = tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_uint_format(tree, hf_mpsse_length_uint16, tvb, offset, 2, length, "Length: %d byte%s", length + 1, plurality(length + 1, "", "s"));
|
|
offset += 2;
|
|
|
|
if (IS_DATA_SHIFTING_WRITING_TDI(cmd))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_bytes_out, tvb, offset, length + 1, ENC_NA);
|
|
offset += length + 1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
length = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint_format(tree, hf_mpsse_length_uint8, tvb, offset, 1, length, "Length: %d bit%s", length + 1, plurality(length + 1, "", "s"));
|
|
offset += 1;
|
|
|
|
if (IS_DATA_SHIFTING_WRITING_TMS(cmd) && IS_DATA_SHIFTING_READING_TDO(cmd) && IS_DATA_SHIFTING_MSB_FIRST(cmd))
|
|
{
|
|
/* These undocumented commands do not seem to consume the data byte, only the length */
|
|
}
|
|
else if (IS_DATA_SHIFTING_WRITING_TDI(cmd) || IS_DATA_SHIFTING_WRITING_TMS(cmd))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_bits_out, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset += 1;
|
|
}
|
|
}
|
|
|
|
if (is_data_shifting_command_returning_response(cmd, mpsse_info))
|
|
{
|
|
expect_response(cmd_data, pinfo, tree, mpsse_info, cmd, IS_DATA_SHIFTING_BYTE_MODE(cmd) ? length + 1 : 1);
|
|
}
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_set_data_bits_parameters(guint8 cmd _U_, tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset,
|
|
const char *signal_names[8], const char *pin_prefix, guint num_pins)
|
|
{
|
|
static const gint *value_bits_hf[] = {
|
|
&hf_mpsse_value_b0,
|
|
&hf_mpsse_value_b1,
|
|
&hf_mpsse_value_b2,
|
|
&hf_mpsse_value_b3,
|
|
&hf_mpsse_value_b4,
|
|
&hf_mpsse_value_b5,
|
|
&hf_mpsse_value_b6,
|
|
&hf_mpsse_value_b7,
|
|
};
|
|
static const gint *direction_bits_hf[] = {
|
|
&hf_mpsse_direction_b0,
|
|
&hf_mpsse_direction_b1,
|
|
&hf_mpsse_direction_b2,
|
|
&hf_mpsse_direction_b3,
|
|
&hf_mpsse_direction_b4,
|
|
&hf_mpsse_direction_b5,
|
|
&hf_mpsse_direction_b6,
|
|
&hf_mpsse_direction_b7,
|
|
};
|
|
guint32 value, direction;
|
|
proto_item *item;
|
|
proto_item *value_item, *direction_item;
|
|
proto_tree *value_tree, *direction_tree;
|
|
guint bit;
|
|
|
|
value_item = proto_tree_add_item_ret_uint(tree, hf_mpsse_value, tvb, offset, 1, ENC_LITTLE_ENDIAN, &value);
|
|
direction_item = proto_tree_add_item_ret_uint(tree, hf_mpsse_direction, tvb, offset + 1, 1, ENC_LITTLE_ENDIAN, &direction);
|
|
|
|
value_tree = proto_item_add_subtree(value_item, ett_mpsse_value);
|
|
for (bit = 0; bit < 8; bit++)
|
|
{
|
|
const char *state;
|
|
if ((1 << bit) & direction)
|
|
{
|
|
state = ((1 << bit) & value) ? "Output High" : "Output Low";
|
|
}
|
|
else
|
|
{
|
|
state = "N/A (Input)";
|
|
}
|
|
item = proto_tree_add_uint_format_value(value_tree, *value_bits_hf[bit], tvb, offset, 1, value, "%s", signal_names[bit]);
|
|
if (pin_prefix && (bit < num_pins))
|
|
{
|
|
proto_item_append_text(item, " [%s%d]", pin_prefix, bit);
|
|
}
|
|
proto_item_append_text(item, " %s", state);
|
|
}
|
|
|
|
direction_tree = proto_item_add_subtree(direction_item, ett_mpsse_direction);
|
|
for (bit = 0; bit < 8; bit++)
|
|
{
|
|
const char *type = ((1 << bit) & direction) ? "Output" : "Input";
|
|
item = proto_tree_add_uint_format_value(direction_tree, *direction_bits_hf[bit], tvb, offset + 1, 1, direction, "%s", signal_names[bit]);
|
|
if (pin_prefix && (bit < num_pins))
|
|
{
|
|
proto_item_append_text(item, " [%s%d]", pin_prefix, bit);
|
|
}
|
|
proto_item_append_text(item, " %s", type);
|
|
}
|
|
|
|
return 2;
|
|
}
|
|
|
|
static gint
|
|
dissect_cpumode_parameters(guint8 cmd, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset,
|
|
ftdi_mpsse_info_t *mpsse_info, command_data_t **cmd_data)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
/* Address is either short (1 byte) or extended (2 bytes) */
|
|
if ((cmd == CMD_CPUMODE_READ_SHORT_ADDR) || (cmd == CMD_CPUMODE_WRITE_SHORT_ADDR))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_cpumode_address_short, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
}
|
|
else if ((cmd == CMD_CPUMODE_READ_EXT_ADDR) || (cmd == CMD_CPUMODE_WRITE_EXT_ADDR))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_cpumode_address_extended, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
}
|
|
|
|
/* Write commands have data parameter (1 byte) */
|
|
if ((cmd == CMD_CPUMODE_WRITE_SHORT_ADDR) || (cmd == CMD_CPUMODE_WRITE_EXT_ADDR))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_cpumode_data, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset += 1;
|
|
}
|
|
|
|
if ((cmd == CMD_CPUMODE_READ_SHORT_ADDR) || (cmd == CMD_CPUMODE_READ_EXT_ADDR))
|
|
{
|
|
expect_response(cmd_data, pinfo, tree, mpsse_info, cmd, 1);
|
|
}
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_clock_parameters(guint8 cmd _U_, tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset, ftdi_mpsse_info_t *mpsse_info)
|
|
{
|
|
gint offset_start = offset;
|
|
guint32 value;
|
|
proto_item *item;
|
|
gchar *str_old, *str;
|
|
|
|
item = proto_tree_add_item_ret_uint(tree, hf_mpsse_clk_divisor, tvb, offset, 2, ENC_LITTLE_ENDIAN, &value);
|
|
offset += 2;
|
|
|
|
str_old = freq_to_str((gfloat) 12e6 / ((1 + value) * 2));
|
|
str = freq_to_str((gfloat) 60e6 / ((1 + value) * 2));
|
|
|
|
if (mpsse_info->chip == FTDI_CHIP_FT2232D)
|
|
{
|
|
proto_item_append_text(item, ", TCK/SK Max: %s", str_old);
|
|
}
|
|
else
|
|
{
|
|
proto_item_append_text(item, ", TCK Max: %s (60 MHz master clock) or %s (12 MHz master clock)", str, str_old);
|
|
}
|
|
|
|
g_free(str_old);
|
|
g_free(str);
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_clock_n_bits_parameters(guint8 cmd _U_, tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset, ftdi_mpsse_info_t *mpsse_info _U_)
|
|
{
|
|
guint32 length = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_uint_format(tree, hf_mpsse_length_uint8, tvb, offset, 1, length, "Length: %d clock%s", length + 1, plurality(length + 1, "", "s"));
|
|
return 1;
|
|
}
|
|
|
|
static gint
|
|
dissect_clock_n_times_8_bits_parameters(guint8 cmd _U_, tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset, ftdi_mpsse_info_t *mpsse_info _U_)
|
|
{
|
|
guint32 length = tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_uint_format(tree, hf_mpsse_length_uint16, tvb, offset, 2, length, "Length: %d clocks", (length + 1) * 8);
|
|
return 2;
|
|
}
|
|
|
|
static const char *
|
|
get_data_bit_pin_prefix(gboolean is_high_byte, ftdi_mpsse_info_t *mpsse_info, guint *out_num_pins, const char *(**out_names)[8])
|
|
{
|
|
static const char *low_byte_signal_names[8] = {
|
|
"TCK/SK",
|
|
"TDI/DO",
|
|
"TDO/DI",
|
|
"TMS/CS",
|
|
"GPIOL0",
|
|
"GPIOL1",
|
|
"GPIOL2",
|
|
"GPIOL3",
|
|
};
|
|
static const char *high_byte_signal_names[8] = {
|
|
"GPIOH0",
|
|
"GPIOH1",
|
|
"GPIOH2",
|
|
"GPIOH3",
|
|
"GPIOH4",
|
|
"GPIOH5",
|
|
"GPIOH6",
|
|
"GPIOH7",
|
|
};
|
|
|
|
*out_names = (is_high_byte) ? &high_byte_signal_names : &low_byte_signal_names;
|
|
|
|
/* Based on table from FTDI AN_108 chapter 2.1 Data bit Definition */
|
|
switch (mpsse_info->chip)
|
|
{
|
|
case FTDI_CHIP_FT2232D:
|
|
if (mpsse_info->iface == FTDI_INTERFACE_A)
|
|
{
|
|
*out_num_pins = (is_high_byte) ? 4 : 8;
|
|
return (is_high_byte) ? "ACBUS" : "ADBUS";
|
|
}
|
|
break;
|
|
case FTDI_CHIP_FT232H:
|
|
*out_num_pins = 8;
|
|
return (is_high_byte) ? "ACBUS" : "ADBUS";
|
|
case FTDI_CHIP_FT2232H:
|
|
if (mpsse_info->iface == FTDI_INTERFACE_A)
|
|
{
|
|
*out_num_pins = 8;
|
|
return (is_high_byte) ? "ACBUS" : "ADBUS";
|
|
}
|
|
else if (mpsse_info->iface == FTDI_INTERFACE_B)
|
|
{
|
|
*out_num_pins = 8;
|
|
return (is_high_byte) ? "BCBUS" : "BDBUS";
|
|
}
|
|
break;
|
|
case FTDI_CHIP_FT4232H:
|
|
if (!is_high_byte)
|
|
{
|
|
if (mpsse_info->iface == FTDI_INTERFACE_A)
|
|
{
|
|
*out_num_pins = 8;
|
|
return "ADBUS";
|
|
}
|
|
else if (mpsse_info->iface == FTDI_INTERFACE_B)
|
|
{
|
|
*out_num_pins = 8;
|
|
return "BDBUS";
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
*out_num_pins = 0;
|
|
return NULL;
|
|
}
|
|
|
|
static gint
|
|
dissect_io_open_drain_enable_parameters(guint8 cmd _U_, tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset, ftdi_mpsse_info_t *mpsse_info _U_)
|
|
{
|
|
static const gint *low_byte_bits_hf[] = {
|
|
&hf_mpsse_open_drain_enable_low_b0,
|
|
&hf_mpsse_open_drain_enable_low_b1,
|
|
&hf_mpsse_open_drain_enable_low_b2,
|
|
&hf_mpsse_open_drain_enable_low_b3,
|
|
&hf_mpsse_open_drain_enable_low_b4,
|
|
&hf_mpsse_open_drain_enable_low_b5,
|
|
&hf_mpsse_open_drain_enable_low_b6,
|
|
&hf_mpsse_open_drain_enable_low_b7,
|
|
};
|
|
static const gint *high_byte_bits_hf[] = {
|
|
&hf_mpsse_open_drain_enable_high_b0,
|
|
&hf_mpsse_open_drain_enable_high_b1,
|
|
&hf_mpsse_open_drain_enable_high_b2,
|
|
&hf_mpsse_open_drain_enable_high_b3,
|
|
&hf_mpsse_open_drain_enable_high_b4,
|
|
&hf_mpsse_open_drain_enable_high_b5,
|
|
&hf_mpsse_open_drain_enable_high_b6,
|
|
&hf_mpsse_open_drain_enable_high_b7,
|
|
};
|
|
gint offset_start = offset;
|
|
const char *pin_prefix = NULL;
|
|
guint num_pins = 0;
|
|
const char *(*signal_names)[8] = NULL;
|
|
guint32 value;
|
|
proto_item *item;
|
|
proto_item *byte_item;
|
|
proto_tree *byte_tree;
|
|
guint bit;
|
|
|
|
pin_prefix = get_data_bit_pin_prefix(FALSE, mpsse_info, &num_pins, &signal_names);
|
|
byte_item = proto_tree_add_item_ret_uint(tree, hf_mpsse_open_drain_enable_low, tvb, offset, 1, ENC_LITTLE_ENDIAN, &value);
|
|
byte_tree = proto_item_add_subtree(byte_item, ett_mpsse_open_drain_enable);
|
|
for (bit = 0; bit < 8; bit++)
|
|
{
|
|
const char *output_type = ((1 << bit) & value) ? "Open-Drain" : "Push-Pull";
|
|
item = proto_tree_add_uint_format_value(byte_tree, *low_byte_bits_hf[bit], tvb, offset, 1, value, "%s", (*signal_names)[bit]);
|
|
if (pin_prefix && (bit < num_pins))
|
|
{
|
|
proto_item_append_text(item, " [%s%d]", pin_prefix, bit);
|
|
}
|
|
proto_item_append_text(item, " %s", output_type);
|
|
}
|
|
offset++;
|
|
|
|
pin_prefix = get_data_bit_pin_prefix(TRUE, mpsse_info, &num_pins, &signal_names);
|
|
byte_item = proto_tree_add_item_ret_uint(tree, hf_mpsse_open_drain_enable_high, tvb, offset, 1, ENC_LITTLE_ENDIAN, &value);
|
|
byte_tree = proto_item_add_subtree(byte_item, ett_mpsse_open_drain_enable);
|
|
for (bit = 0; bit < 8; bit++)
|
|
{
|
|
const char *output_type = ((1 << bit) & value) ? "Open-Drain" : "Push-Pull";
|
|
item = proto_tree_add_uint_format_value(byte_tree, *high_byte_bits_hf[bit], tvb, offset, 1, value, "%s", (*signal_names)[bit]);
|
|
if (pin_prefix && (bit < num_pins))
|
|
{
|
|
proto_item_append_text(item, " [%s%d]", pin_prefix, bit);
|
|
}
|
|
proto_item_append_text(item, " %s", output_type);
|
|
}
|
|
offset++;
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_non_data_shifting_command_parameters(guint8 cmd, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset,
|
|
ftdi_mpsse_info_t *mpsse_info, command_data_t **cmd_data)
|
|
{
|
|
const char *pin_prefix = NULL;
|
|
guint num_pins = 0;
|
|
const char *(*signal_names)[8] = NULL;
|
|
|
|
DISSECTOR_ASSERT(!is_data_shifting_command(cmd) && is_valid_command(cmd, mpsse_info));
|
|
|
|
switch (cmd)
|
|
{
|
|
case CMD_SET_DATA_BITS_LOW_BYTE:
|
|
pin_prefix = get_data_bit_pin_prefix(FALSE, mpsse_info, &num_pins, &signal_names);
|
|
return dissect_set_data_bits_parameters(cmd, tvb, pinfo, tree, offset, *signal_names, pin_prefix, num_pins);
|
|
case CMD_SET_DATA_BITS_HIGH_BYTE:
|
|
pin_prefix = get_data_bit_pin_prefix(TRUE, mpsse_info, &num_pins, &signal_names);
|
|
return dissect_set_data_bits_parameters(cmd, tvb, pinfo, tree, offset, *signal_names, pin_prefix, num_pins);
|
|
case CMD_READ_DATA_BITS_LOW_BYTE:
|
|
case CMD_READ_DATA_BITS_HIGH_BYTE:
|
|
expect_response(cmd_data, pinfo, tree, mpsse_info, cmd, 1);
|
|
return 0;
|
|
case CMD_CPUMODE_READ_SHORT_ADDR:
|
|
case CMD_CPUMODE_READ_EXT_ADDR:
|
|
case CMD_CPUMODE_WRITE_SHORT_ADDR:
|
|
case CMD_CPUMODE_WRITE_EXT_ADDR:
|
|
return dissect_cpumode_parameters(cmd, tvb, pinfo, tree, offset, mpsse_info, cmd_data);
|
|
case CMD_CLOCK_SET_DIVISOR:
|
|
return dissect_clock_parameters(cmd, tvb, pinfo, tree, offset, mpsse_info);
|
|
case CMD_CLOCK_N_BITS:
|
|
return dissect_clock_n_bits_parameters(cmd, tvb, pinfo, tree, offset, mpsse_info);
|
|
case CMD_CLOCK_N_TIMES_8_BITS:
|
|
case CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_HIGH:
|
|
case CMD_CLOCK_N_TIMES_8_BITS_OR_UNTIL_L1_LOW:
|
|
return dissect_clock_n_times_8_bits_parameters(cmd, tvb, pinfo, tree, offset, mpsse_info);
|
|
case CMD_IO_OPEN_DRAIN_ENABLE:
|
|
return dissect_io_open_drain_enable_parameters(cmd, tvb, pinfo, tree, offset, mpsse_info);
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static gint estimated_command_parameters_length(guint8 cmd, tvbuff_t *tvb, packet_info *pinfo, gint offset,
|
|
ftdi_mpsse_info_t *mpsse_info, command_data_t **cmd_data)
|
|
{
|
|
gint parameters_length = 0;
|
|
|
|
if (!is_valid_command(cmd, mpsse_info))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if (is_data_shifting_command(cmd))
|
|
{
|
|
gint32 data_length = 0;
|
|
if (IS_DATA_SHIFTING_BYTE_MODE(cmd))
|
|
{
|
|
parameters_length = 2;
|
|
if (IS_DATA_SHIFTING_WRITING_TDI(cmd))
|
|
{
|
|
if (tvb_reported_length_remaining(tvb, offset) >= 2)
|
|
{
|
|
data_length = (gint32)tvb_get_guint16(tvb, offset, ENC_LITTLE_ENDIAN) + 1;
|
|
parameters_length += data_length;
|
|
}
|
|
/* else length is not available already so the caller will know that reassembly is needed */
|
|
}
|
|
}
|
|
else /* bit mode */
|
|
{
|
|
parameters_length = (IS_DATA_SHIFTING_WRITING_TDI(cmd) || IS_DATA_SHIFTING_WRITING_TMS(cmd)) ? 2 : 1;
|
|
data_length = 1;
|
|
if (IS_DATA_SHIFTING_WRITING_TMS(cmd) && IS_DATA_SHIFTING_READING_TDO(cmd) && IS_DATA_SHIFTING_MSB_FIRST(cmd))
|
|
{
|
|
/* These undocumented commands do not seem to consume the data byte, only the length */
|
|
parameters_length = 1;
|
|
}
|
|
}
|
|
|
|
if (!pinfo->fd->visited)
|
|
{
|
|
if (is_data_shifting_command_returning_response(cmd, mpsse_info) && data_length)
|
|
{
|
|
/* Record preliminary command info so the response handler can find the matching command
|
|
* if host starts reading data before all output is sent. If this command requires reassembly
|
|
* the command_in_packet member will continue updating until the reassembly is complete.
|
|
* The preliminary flag will be reset when expect_response() executes.
|
|
*/
|
|
record_command_data(cmd_data, pinfo, mpsse_info, cmd, data_length, TRUE);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (cmd)
|
|
{
|
|
case CMD_CPUMODE_WRITE_EXT_ADDR:
|
|
parameters_length = 3;
|
|
break;
|
|
case CMD_SET_DATA_BITS_LOW_BYTE:
|
|
case CMD_SET_DATA_BITS_HIGH_BYTE:
|
|
case CMD_CPUMODE_READ_EXT_ADDR:
|
|
case CMD_CPUMODE_WRITE_SHORT_ADDR:
|
|
case CMD_CLOCK_SET_DIVISOR:
|
|
case 0x8F: case 0x9C: case 0x9D: case 0x9E:
|
|
parameters_length = 2;
|
|
break;
|
|
case CMD_CPUMODE_READ_SHORT_ADDR:
|
|
case 0x8E:
|
|
parameters_length = 1;
|
|
break;
|
|
case 0x81: case 0x83: case 0x84: case 0x85: case 0x87: case 0x88: case 0x89: case 0x8A: case 0x8B: case 0x8C: case 0x8D: case 0x94: case 0x95: case 0x96: case 0x97:
|
|
parameters_length = 0;
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
}
|
|
|
|
return parameters_length;
|
|
}
|
|
|
|
static guint8
|
|
dissect_command_code(guint8 cmd, const char *cmd_str, tvbuff_t *tvb, proto_tree *tree, gint offset, ftdi_mpsse_info_t *mpsse_info _U_)
|
|
{
|
|
proto_item *cmd_item;
|
|
proto_tree *cmd_tree;
|
|
int * const *cmd_bits;
|
|
static int * const data_shifting_cmd_bits[] = {
|
|
&hf_mpsse_command_b7,
|
|
&hf_mpsse_command_b6,
|
|
&hf_mpsse_command_b5,
|
|
&hf_mpsse_command_b4,
|
|
&hf_mpsse_command_b3,
|
|
&hf_mpsse_command_b2,
|
|
&hf_mpsse_command_b1,
|
|
&hf_mpsse_command_b0,
|
|
NULL
|
|
};
|
|
|
|
static int * const non_data_shifting_cmd_bits[] = {
|
|
&hf_mpsse_command_b7,
|
|
NULL
|
|
};
|
|
|
|
cmd_item = proto_tree_add_uint_format(tree, hf_mpsse_command, tvb, offset, 1, cmd, "Command: %s (0x%02x)", cmd_str, cmd);
|
|
cmd_tree = proto_item_add_subtree(cmd_item, ett_mpsse_command);
|
|
cmd_bits = IS_DATA_SHIFTING_COMMAND_BIT_ACTIVE(cmd) ? data_shifting_cmd_bits : non_data_shifting_cmd_bits;
|
|
|
|
proto_tree_add_bitmask_list_value(cmd_tree, tvb, offset, 1, cmd_bits, cmd);
|
|
|
|
return cmd;
|
|
}
|
|
|
|
static gint
|
|
dissect_command(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, gboolean *need_reassembly,
|
|
ftdi_mpsse_info_t *mpsse_info, command_data_t **cmd_data)
|
|
{
|
|
guint8 cmd;
|
|
const char *cmd_str;
|
|
gint offset_start = offset;
|
|
gint parameters_length;
|
|
gint dissected;
|
|
proto_item *cmd_with_parameters;
|
|
proto_tree *cmd_tree;
|
|
|
|
cmd = tvb_get_guint8(tvb, offset);
|
|
cmd_str = get_command_string(cmd, mpsse_info);
|
|
parameters_length = estimated_command_parameters_length(cmd, tvb, pinfo, offset + 1, mpsse_info, cmd_data);
|
|
if (tvb_reported_length_remaining(tvb, offset + 1) < parameters_length)
|
|
{
|
|
*need_reassembly = TRUE;
|
|
return 0;
|
|
}
|
|
|
|
if (!cmd_str)
|
|
{
|
|
cmd_str = "Bad Command";
|
|
}
|
|
|
|
cmd_with_parameters = proto_tree_add_bytes_format(tree, hf_mpsse_command_with_parameters, tvb, offset, 1 + parameters_length, NULL, "%s", cmd_str);
|
|
cmd_tree = proto_item_add_subtree(cmd_with_parameters, ett_mpsse_command_with_parameters);
|
|
|
|
cmd = dissect_command_code(cmd, cmd_str, tvb, cmd_tree, offset, mpsse_info);
|
|
offset += 1;
|
|
|
|
*need_reassembly = FALSE;
|
|
if (is_valid_command(cmd, mpsse_info))
|
|
{
|
|
if (IS_DATA_SHIFTING_COMMAND_BIT_ACTIVE(cmd))
|
|
{
|
|
dissected = dissect_data_shifting_command_parameters(cmd, tvb, pinfo, cmd_tree, offset, mpsse_info, cmd_data);
|
|
DISSECTOR_ASSERT(dissected == parameters_length);
|
|
offset += dissected;
|
|
}
|
|
else
|
|
{
|
|
dissected = dissect_non_data_shifting_command_parameters(cmd, tvb, pinfo, cmd_tree, offset, mpsse_info, cmd_data);
|
|
if (parameters_length > dissected)
|
|
{
|
|
proto_tree_add_expert(cmd_tree, pinfo, &ei_undecoded, tvb, offset + dissected, parameters_length - dissected);
|
|
}
|
|
offset += parameters_length;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Expect Bad Command response */
|
|
expect_response(cmd_data, pinfo, cmd_tree, mpsse_info, cmd, 2);
|
|
}
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
|
|
static gint
|
|
dissect_read_data_bits_response(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset,
|
|
const char *signal_names[8], const char *pin_prefix, guint num_pins)
|
|
{
|
|
static const gint *value_bits_hf[] = {
|
|
&hf_mpsse_value_b0,
|
|
&hf_mpsse_value_b1,
|
|
&hf_mpsse_value_b2,
|
|
&hf_mpsse_value_b3,
|
|
&hf_mpsse_value_b4,
|
|
&hf_mpsse_value_b5,
|
|
&hf_mpsse_value_b6,
|
|
&hf_mpsse_value_b7,
|
|
};
|
|
guint32 value;
|
|
proto_item *item;
|
|
proto_item *value_item;
|
|
proto_tree *value_tree;
|
|
guint bit;
|
|
|
|
value_item = proto_tree_add_item_ret_uint(tree, hf_mpsse_value, tvb, offset, 1, ENC_LITTLE_ENDIAN, &value);
|
|
value_tree = proto_item_add_subtree(value_item, ett_mpsse_value);
|
|
for (bit = 0; bit < 8; bit++)
|
|
{
|
|
const char *state;
|
|
state = ((1 << bit) & value) ? "High" : "Low";
|
|
item = proto_tree_add_uint_format_value(value_tree, *value_bits_hf[bit], tvb, offset, 1, value, "%s", signal_names[bit]);
|
|
if (pin_prefix && (bit < num_pins))
|
|
{
|
|
proto_item_append_text(item, " [%s%d]", pin_prefix, bit);
|
|
}
|
|
proto_item_append_text(item, " %s", state);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static gint
|
|
dissect_cpumode_response(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, gint offset)
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_cpumode_data, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
return 1;
|
|
}
|
|
|
|
static gint
|
|
dissect_non_data_shifting_command_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, command_data_t *cmd_data)
|
|
{
|
|
const char *pin_prefix = NULL;
|
|
guint num_pins = 0;
|
|
const char *(*signal_names)[8] = NULL;
|
|
|
|
DISSECTOR_ASSERT(!is_data_shifting_command(cmd_data->cmd) && is_valid_command(cmd_data->cmd, &cmd_data->mpsse_info));
|
|
|
|
switch (cmd_data->cmd)
|
|
{
|
|
case CMD_READ_DATA_BITS_LOW_BYTE:
|
|
pin_prefix = get_data_bit_pin_prefix(FALSE, &cmd_data->mpsse_info, &num_pins, &signal_names);
|
|
return dissect_read_data_bits_response(tvb, pinfo, tree, offset, *signal_names, pin_prefix, num_pins);
|
|
case CMD_READ_DATA_BITS_HIGH_BYTE:
|
|
pin_prefix = get_data_bit_pin_prefix(TRUE, &cmd_data->mpsse_info, &num_pins, &signal_names);
|
|
return dissect_read_data_bits_response(tvb, pinfo, tree, offset, *signal_names, pin_prefix, num_pins);
|
|
case CMD_CPUMODE_READ_SHORT_ADDR:
|
|
case CMD_CPUMODE_READ_EXT_ADDR:
|
|
return dissect_cpumode_response(tvb, pinfo, tree, offset);
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
static gint
|
|
dissect_response_data(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, command_data_t *cmd_data)
|
|
{
|
|
gint offset_start = offset;
|
|
|
|
if (pinfo->fd->visited)
|
|
{
|
|
DISSECTOR_ASSERT(cmd_data->is_response_set && cmd_data->response_in_packet == pinfo->num);
|
|
}
|
|
else
|
|
{
|
|
DISSECTOR_ASSERT(!cmd_data->is_response_set);
|
|
cmd_data->response_in_packet = pinfo->num;
|
|
cmd_data->is_response_set = TRUE;
|
|
}
|
|
|
|
if (is_valid_command(cmd_data->cmd, &cmd_data->mpsse_info))
|
|
{
|
|
if (IS_DATA_SHIFTING_COMMAND_BIT_ACTIVE(cmd_data->cmd))
|
|
{
|
|
if (IS_DATA_SHIFTING_BYTE_MODE(cmd_data->cmd))
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_bytes_in, tvb, offset, cmd_data->response_length, ENC_NA);
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_bits_in, tvb, offset, cmd_data->response_length, ENC_LITTLE_ENDIAN);
|
|
}
|
|
offset += cmd_data->response_length;
|
|
}
|
|
else
|
|
{
|
|
gint dissected;
|
|
|
|
dissected = dissect_non_data_shifting_command_response(tvb, pinfo, tree, offset, cmd_data);
|
|
offset += dissected;
|
|
|
|
DISSECTOR_ASSERT(dissected <= cmd_data->response_length);
|
|
if (cmd_data->response_length > dissected)
|
|
{
|
|
proto_tree_add_expert(tree, pinfo, &ei_undecoded, tvb, offset, cmd_data->response_length - dissected);
|
|
offset += (cmd_data->response_length - dissected);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_item(tree, hf_mpsse_bad_command_error, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
|
|
proto_tree_add_item(tree, hf_mpsse_bad_command_code, tvb, offset, 1, ENC_LITTLE_ENDIAN);
|
|
offset++;
|
|
}
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_response(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, gint offset, gboolean *need_reassembly,
|
|
command_data_t *cmd_data)
|
|
{
|
|
const char *cmd_str;
|
|
gint offset_start = offset;
|
|
proto_item *rsp_data;
|
|
proto_tree *rsp_tree;
|
|
proto_item *command_in;
|
|
|
|
cmd_str = get_command_string(cmd_data->cmd, &cmd_data->mpsse_info);
|
|
if (!cmd_str)
|
|
{
|
|
gboolean found = FALSE;
|
|
gboolean request_reassembly = FALSE;
|
|
|
|
DISSECTOR_ASSERT(cmd_data->response_length == 2);
|
|
cmd_str = "Bad Command";
|
|
|
|
/* Look for Bad Command response in data */
|
|
while (tvb_reported_length_remaining(tvb, offset) >= 2)
|
|
{
|
|
if (tvb_get_guint8(tvb, offset) == BAD_COMMAND_SYNC_CODE)
|
|
{
|
|
if (tvb_get_guint8(tvb, offset + 1) == cmd_data->cmd)
|
|
{
|
|
found = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
offset++;
|
|
}
|
|
|
|
if (!found)
|
|
{
|
|
if (tvb_get_guint8(tvb, offset) == BAD_COMMAND_SYNC_CODE)
|
|
{
|
|
/* Request reassembly only if there is chance it will help */
|
|
request_reassembly = TRUE;
|
|
}
|
|
else
|
|
{
|
|
offset++;
|
|
}
|
|
}
|
|
|
|
if (offset != offset_start)
|
|
{
|
|
proto_item *item;
|
|
proto_tree *expert_tree;
|
|
|
|
item = proto_tree_add_expert(tree, pinfo, &ei_skipped_response_data, tvb, offset_start, offset - offset_start);
|
|
expert_tree = proto_item_add_subtree(item, ett_mpsse_skipped_response_data);
|
|
|
|
command_in = proto_tree_add_uint_format(expert_tree, hf_mpsse_command_in, NULL, 0, 0, cmd_data->command_in_packet,
|
|
"Bad Command 0x%02x in: %" PRIu32, cmd_data->cmd, cmd_data->command_in_packet);
|
|
proto_item_set_generated(command_in);
|
|
if (cmd_data->is_response_set)
|
|
{
|
|
proto_item *response_in;
|
|
|
|
response_in = proto_tree_add_uint(expert_tree, hf_mpsse_response_in, NULL, 0, 0, cmd_data->response_in_packet);
|
|
proto_item_set_generated(response_in);
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
{
|
|
*need_reassembly = request_reassembly;
|
|
return offset - offset_start;
|
|
}
|
|
}
|
|
|
|
if (tvb_reported_length_remaining(tvb, offset) < cmd_data->response_length)
|
|
{
|
|
*need_reassembly = TRUE;
|
|
return 0;
|
|
}
|
|
|
|
rsp_data = proto_tree_add_bytes_format(tree, hf_mpsse_response, tvb, offset, cmd_data->response_length, NULL, "%s", cmd_str);
|
|
rsp_tree = proto_item_add_subtree(rsp_data, ett_mpsse_response_data);
|
|
|
|
command_in = proto_tree_add_uint_format(rsp_tree, hf_mpsse_command_in, NULL, 0, 0, cmd_data->command_in_packet,
|
|
"Command 0x%02x in: %" PRIu32, cmd_data->cmd, cmd_data->command_in_packet);
|
|
proto_item_set_generated(command_in);
|
|
|
|
offset += dissect_response_data(tvb, pinfo, rsp_tree, offset, cmd_data);
|
|
|
|
return offset - offset_start;
|
|
}
|
|
|
|
static gint
|
|
dissect_ftdi_mpsse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
|
|
{
|
|
gboolean need_reassembly = FALSE;
|
|
ftdi_mpsse_info_t *mpsse_info = (ftdi_mpsse_info_t *)data;
|
|
gint offset = 0;
|
|
proto_item *main_item;
|
|
proto_tree *main_tree;
|
|
|
|
if (!mpsse_info)
|
|
{
|
|
return offset;
|
|
}
|
|
|
|
main_item = proto_tree_add_item(tree, proto_ftdi_mpsse, tvb, offset, -1, ENC_NA);
|
|
main_tree = proto_item_add_subtree(main_item, ett_ftdi_mpsse);
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FTDI MPSSE");
|
|
|
|
if (pinfo->p2p_dir == P2P_DIR_SENT)
|
|
{
|
|
command_data_t *iter = get_recorded_command_data(tx_command_info, pinfo, mpsse_info);
|
|
|
|
if (!pinfo->fd->visited)
|
|
{
|
|
/* Not visited yet - advance iterator to last element */
|
|
while (iter && iter->next)
|
|
{
|
|
DISSECTOR_ASSERT(!iter->preliminary);
|
|
iter = iter->next;
|
|
}
|
|
}
|
|
|
|
while ((tvb_reported_length_remaining(tvb, offset) > 0) && (!need_reassembly))
|
|
{
|
|
offset += dissect_command(tvb, pinfo, main_tree, offset, &need_reassembly, mpsse_info, &iter);
|
|
}
|
|
}
|
|
else if (pinfo->p2p_dir == P2P_DIR_RECV)
|
|
{
|
|
command_data_t *head = get_recorded_command_data(rx_command_info, pinfo, mpsse_info);
|
|
command_data_t *iter = head;
|
|
|
|
if (!pinfo->fd->visited)
|
|
{
|
|
while (iter && iter->is_response_set)
|
|
{
|
|
iter = iter->next;
|
|
}
|
|
|
|
if (iter != head)
|
|
{
|
|
insert_command_data_pointer(rx_command_info, pinfo, mpsse_info, iter);
|
|
}
|
|
}
|
|
|
|
while ((tvb_reported_length_remaining(tvb, offset) > 0) && (!need_reassembly))
|
|
{
|
|
if (!iter)
|
|
{
|
|
proto_tree_add_expert(main_tree, pinfo, &ei_response_without_command, tvb, offset, -1);
|
|
offset += tvb_reported_length_remaining(tvb, offset);
|
|
}
|
|
else
|
|
{
|
|
offset += dissect_response(tvb, pinfo, main_tree, offset, &need_reassembly, iter);
|
|
iter = iter->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (need_reassembly)
|
|
{
|
|
if (pinfo->can_desegment)
|
|
{
|
|
pinfo->desegment_offset = offset;
|
|
pinfo->desegment_len = DESEGMENT_ONE_MORE_SEGMENT;
|
|
}
|
|
else
|
|
{
|
|
proto_tree_add_expert(main_tree, pinfo, &ei_reassembly_unavailable, tvb, offset, -1);
|
|
}
|
|
offset += tvb_reported_length_remaining(tvb, offset);
|
|
}
|
|
|
|
if (tvb_reported_length_remaining(tvb, offset) > 0)
|
|
{
|
|
proto_tree_add_expert(main_tree, pinfo, &ei_undecoded, tvb, offset, -1);
|
|
}
|
|
|
|
return tvb_reported_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_ftdi_mpsse(void)
|
|
{
|
|
expert_module_t *expert_module;
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_mpsse_command,
|
|
{ "Command", "ftdi-mpsse.command",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b0,
|
|
{ "-ve CLK on write", "ftdi-mpsse.command.b0",
|
|
FT_BOOLEAN, 8, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b1,
|
|
{ "Mode", "ftdi-mpsse.command.b1",
|
|
FT_UINT8, BASE_DEC, VALS(data_shifting_command_b1_vals), (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b2,
|
|
{ "-ve CLK on read", "ftdi-mpsse.command.b2",
|
|
FT_BOOLEAN, 8, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b3,
|
|
{ "Endianness", "ftdi-mpsse.command.b3",
|
|
FT_UINT8, BASE_DEC, VALS(data_shifting_command_b3_vals), (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b4,
|
|
{ "Do write TDI", "ftdi-mpsse.command.b4",
|
|
FT_BOOLEAN, 8, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b5,
|
|
{ "Do read TDO", "ftdi-mpsse.command.b5",
|
|
FT_BOOLEAN, 8, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b6,
|
|
{ "Do write TMS", "ftdi-mpsse.command.b6",
|
|
FT_BOOLEAN, 8, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_b7,
|
|
{ "Type", "ftdi-mpsse.command.b7",
|
|
FT_UINT8, BASE_DEC, VALS(command_b7_vals), (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_with_parameters,
|
|
{ "Command with parameters", "ftdi-mpsse.command_with_parameters",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
"Command including optional parameter bytes", HFILL }
|
|
},
|
|
{ &hf_mpsse_bad_command_error,
|
|
{ "Error code", "ftdi-mpsse.bad_command.error",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Bad Command error code 0xFA", HFILL }
|
|
},
|
|
{ &hf_mpsse_bad_command_code,
|
|
{ "Received invalid command", "ftdi-mpsse.bad_command.command",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"Byte which caused the bad command", HFILL }
|
|
},
|
|
{ &hf_mpsse_response,
|
|
{ "Command response data", "ftdi-mpsse.response",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_command_in,
|
|
{ "Command in", "ftdi-mpsse.command.in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_response_in,
|
|
{ "Response in", "ftdi-mpsse.response.in",
|
|
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_length_uint8,
|
|
{ "Length", "ftdi-mpsse.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_length_uint16,
|
|
{ "Length", "ftdi-mpsse.length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_bytes_out,
|
|
{ "Bytes out", "ftdi-mpsse.bytes_out",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_bytes_in,
|
|
{ "Bytes in", "ftdi-mpsse.bytes_in",
|
|
FT_BYTES, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_bits_out,
|
|
{ "Bits out", "ftdi-mpsse.bits_out",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_bits_in,
|
|
{ "Bits in", "ftdi-mpsse.bits_in",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value,
|
|
{ "Value", "ftdi-mpsse.value",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b0,
|
|
{ "Bit 0", "ftdi-mpsse.value.b0",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b1,
|
|
{ "Bit 1", "ftdi-mpsse.value.b1",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b2,
|
|
{ "Bit 2", "ftdi-mpsse.value.b2",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b3,
|
|
{ "Bit 3", "ftdi-mpsse.value.b3",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b4,
|
|
{ "Bit 4", "ftdi-mpsse.value.b4",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b5,
|
|
{ "Bit 5", "ftdi-mpsse.value.b5",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b6,
|
|
{ "Bit 6", "ftdi-mpsse.value.b6",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_value_b7,
|
|
{ "Bit 7", "ftdi-mpsse.value.b7",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction,
|
|
{ "Direction", "ftdi-mpsse.direction",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b0,
|
|
{ "Bit 0", "ftdi-mpsse.direction.b0",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b1,
|
|
{ "Bit 1", "ftdi-mpsse.direction.b1",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b2,
|
|
{ "Bit 2", "ftdi-mpsse.direction.b2",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b3,
|
|
{ "Bit 3", "ftdi-mpsse.direction.b3",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b4,
|
|
{ "Bit 4", "ftdi-mpsse.direction.b4",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b5,
|
|
{ "Bit 5", "ftdi-mpsse.direction.b5",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b6,
|
|
{ "Bit 6", "ftdi-mpsse.direction.b6",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_direction_b7,
|
|
{ "Bit 7", "ftdi-mpsse.direction.b7",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_cpumode_address_short,
|
|
{ "Address", "ftdi-mpsse.cpumode_address",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"CPUMode Short Address", HFILL }
|
|
},
|
|
{ &hf_mpsse_cpumode_address_extended,
|
|
{ "Address", "ftdi-mpsse.cpumode_address",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"CPUMode Extended Address", HFILL }
|
|
},
|
|
{ &hf_mpsse_cpumode_data,
|
|
{ "Data", "ftdi-mpsse.cpumode_data",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_clk_divisor,
|
|
{ "Divisor", "ftdi-mpsse.clk_divisor",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low,
|
|
{ "Low Byte", "ftdi-mpsse.open_drain_enable_low",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b0,
|
|
{ "Bit 0", "ftdi-mpsse.open_drain_enable_low.b0",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b1,
|
|
{ "Bit 1", "ftdi-mpsse.open_drain_enable_low.b1",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b2,
|
|
{ "Bit 2", "ftdi-mpsse.open_drain_enable_low.b2",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b3,
|
|
{ "Bit 3", "ftdi-mpsse.open_drain_enable_low.b3",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b4,
|
|
{ "Bit 4", "ftdi-mpsse.open_drain_enable_low.b4",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b5,
|
|
{ "Bit 5", "ftdi-mpsse.open_drain_enable_low.b5",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b6,
|
|
{ "Bit 6", "ftdi-mpsse.open_drain_enable_low.b6",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_low_b7,
|
|
{ "Bit 7", "ftdi-mpsse.open_drain_enable_low.b7",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high,
|
|
{ "High Byte", "ftdi-mpsse.open_drain_enable_high",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b0,
|
|
{ "Bit 0", "ftdi-mpsse.open_drain_enable_high.b0",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 0),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b1,
|
|
{ "Bit 1", "ftdi-mpsse.open_drain_enable_high.b1",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 1),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b2,
|
|
{ "Bit 2", "ftdi-mpsse.open_drain_enable_high.b2",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 2),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b3,
|
|
{ "Bit 3", "ftdi-mpsse.open_drain_enable_high.b3",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 3),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b4,
|
|
{ "Bit 4", "ftdi-mpsse.open_drain_enable_high.b4",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 4),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b5,
|
|
{ "Bit 5", "ftdi-mpsse.open_drain_enable_high.b5",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 5),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b6,
|
|
{ "Bit 6", "ftdi-mpsse.open_drain_enable_high.b6",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 6),
|
|
NULL, HFILL }
|
|
},
|
|
{ &hf_mpsse_open_drain_enable_high_b7,
|
|
{ "Bit 7", "ftdi-mpsse.open_drain_enable_high.b7",
|
|
FT_UINT8, BASE_DEC, NULL, (1 << 7),
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_undecoded, { "ftdi-mpsse.undecoded", PI_UNDECODED, PI_WARN, "Not dissected yet (report to wireshark.org)", EXPFILL }},
|
|
{ &ei_response_without_command, { "ftdi-mpsse.response_without_command", PI_PROTOCOL, PI_ERROR, "Unable to associate response with command (response without command?)", EXPFILL }},
|
|
{ &ei_skipped_response_data, { "ftdi-mpsse.skipped_response_data", PI_PROTOCOL, PI_WARN, "Skipped response data while looking for Bad Command response", EXPFILL }},
|
|
{ &ei_reassembly_unavailable, { "ftdi-mpsse.reassembly_unavailable", PI_UNDECODED, PI_ERROR, "Data source dissector does not support reassembly. Dissection will get out of sync.", EXPFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_ftdi_mpsse,
|
|
&ett_mpsse_command,
|
|
&ett_mpsse_command_with_parameters,
|
|
&ett_mpsse_response_data,
|
|
&ett_mpsse_value,
|
|
&ett_mpsse_direction,
|
|
&ett_mpsse_open_drain_enable,
|
|
&ett_mpsse_skipped_response_data,
|
|
};
|
|
|
|
rx_command_info = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
|
|
tx_command_info = wmem_tree_new_autoreset(wmem_epan_scope(), wmem_file_scope());
|
|
|
|
proto_ftdi_mpsse = proto_register_protocol("FTDI Multi-Protocol Synchronous Serial Engine", "FTDI MPSSE", "ftdi-mpsse");
|
|
proto_register_field_array(proto_ftdi_mpsse, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
ftdi_mpsse_handle = register_dissector("ftdi-mpsse", dissect_ftdi_mpsse, proto_ftdi_mpsse);
|
|
|
|
expert_module = expert_register_protocol(proto_ftdi_mpsse);
|
|
expert_register_field_array(expert_module, ei, array_length(ei));
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
*/
|