|
- /***************************************************************************
- * Copyright (C) 2007 by Simon Qian <SimonQian@SimonQian.com> *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- * You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
- ***************************************************************************/
-
- /* Versaloon is a programming tool for multiple MCUs.
- * OpenOCD and MSP430 supports are distributed under GPLv2.
- * You can find it at http://www.SimonQian.com/en/Versaloon.
- */
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include "replacements.h"
-
- #include "jtag.h"
-
- #include <usb.h>
- #include <string.h>
-
- #include "log.h"
-
- //#define _VSLLINK_IN_DEBUG_MODE_
-
- /* enable this to view USB communication
- */
- #if 0
- #define _DEBUG_USB_COMMS_
- #endif
-
- #ifdef _DEBUG_JTAG_IO_
- #define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr)
- #else
- #define DEBUG_JTAG_IO(expr ...)
- #endif
-
- #define VID 0x03EB
- #define PID 0x2103
- #define VSLLINK_WRITE_ENDPOINT 0x02
- #define VSLLINK_READ_ENDPOINT 0x82
-
- u16 vsllink_vid = VID;
- u16 vsllink_pid = PID;
- u8 vsllink_bulkout = VSLLINK_WRITE_ENDPOINT;
- u8 vsllink_bulkin = VSLLINK_READ_ENDPOINT;
-
- #define VSLLINK_USB_TIMEOUT 1000
-
- static int VSLLINK_BufferSize = 1024;
-
- /* Global USB buffers */
- static int vsllink_usb_out_buffer_idx;
- static int vsllink_usb_in_want_length;
- static u8* vsllink_usb_in_buffer = NULL;
- static u8* vsllink_usb_out_buffer = NULL;
-
- /* Constants for VSLLink command */
- #define VSLLINK_CMD_CONN 0x80
- #define VSLLINK_CMD_DISCONN 0x81
- #define VSLLINK_CMD_SET_SPEED 0x82
- #define VSLLINK_CMD_SET_PORT 0x90
- #define VSLLINK_CMD_GET_PORT 0x91
- #define VSLLINK_CMD_SET_PORTDIR 0x92
- #define VSLLINK_CMD_HW_JTAGSEQCMD 0xA0
-
- #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00
- #define VSLLINK_CMDJTAGSEQ_SCAN 0x80
-
- #define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0
- #define VSLLINK_CMDJTAGSEQ_LENMSK 0x3F
-
- #define JTAG_PINMSK_SRST (1 << 0)
- #define JTAG_PINMSK_TRST (1 << 1)
- #define JTAG_PINMSK_USR1 (1 << 2)
- #define JTAG_PINMSK_USR2 (1 << 3)
- #define JTAG_PINMSK_TCK (1 << 4)
- #define JTAG_PINMSK_TMS (1 << 5)
- #define JTAG_PINMSK_TDI (1 << 6)
- #define JTAG_PINMSK_TDO (1 << 7)
-
-
- #define VSLLINK_TAP_MOVE(from, to) VSLLINK_tap_move[tap_move_map[from]][tap_move_map[to]]
-
- /* VSLLINK_tap_move[i][j]: tap movement command to go from state i to state j
- * 0: Test-Logic-Reset
- * 1: Run-Test/Idle
- * 2: Shift-DR
- * 3: Pause-DR
- * 4: Shift-IR
- * 5: Pause-IR
- *
- * SD->SD and SI->SI have to be caught in interface specific code
- */
- u8 VSLLINK_tap_move[6][6] =
- {
- /* TLR RTI SD PD SI PI */
- {0xff, 0x00, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */
- {0xff, 0x00, 0x45, 0x05, 0x4b, 0x0b}, /* RTI */
- {0xff, 0x61, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
- {0xff, 0x60, 0x40, 0x17, 0x3c, 0x2f}, /* PD */
- {0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */
- {0xff, 0x60, 0x38, 0x17, 0x40, 0x2f} /* PI */
- };
-
- u8 VSLLINK_TAP_MOVE_FROM_E1[6] =
- {
- // TLR RTI SD PD SI PI
- 0xff, 0x60, 0x38, 0x5c, 0x3c, 0x5E
- };
-
- u8 VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[7][6][2] =
- {
- /* stuff offset */
- {/* TLR */
- {1, 0,}, /* TLR */
- {1, 0,}, /* RTI */
- {1, 0,}, /* SD */
- {1, 0,}, /* PD */
- {1, 0,}, /* SI */
- {1, 0,}}, /* PI */
- {/* RTI */
- {1, 0,}, /* TLR */
- {0, 0,}, /* RTI */
- {0, 4,}, /* SD */
- {0, 7,}, /* PD */
- {0, 5,}, /* SI */
- {0, 7,}}, /* PI */
- {/* SD */
- {0, 0,}, /* TLR */
- {0, 0,}, /* RTI */
- {0, 0,}, /* SD */
- {0, 0,}, /* PD */
- {0, 0,}, /* SI */
- {0, 0,}}, /* PI */
- {/* PD */
- {0, 0,}, /* TLR */
- {0, 0,}, /* RTI */
- {0, 0,}, /* SD */
- {0, 0,}, /* PD */
- {0, 0,}, /* SI */
- {0, 0,}}, /* PI */
- {/* SI */
- {0, 0,}, /* TLR */
- {0, 0,}, /* RTI */
- {0, 0,}, /* SD */
- {0, 0,}, /* PD */
- {0, 0,}, /* SI */
- {0, 0,}}, /* PI */
- {/* PI */
- {0, 0,}, /* TLR */
- {0, 0,}, /* RTI */
- {0, 0,}, /* SD */
- {0, 0,}, /* PD */
- {0, 0,}, /* SI */
- {0, 0,}}, /* PI */
- };
-
- u8 VSLLINK_BIT_MSK[8] =
- {
- 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
- };
-
- /* External interface functions */
- int vsllink_execute_queue(void);
- int vsllink_speed(int speed);
- int vsllink_khz(int khz, int *jtag_speed);
- int vsllink_speed_div(int jtag_speed, int *khz);
- int vsllink_register_commands(struct command_context_s *cmd_ctx);
- int vsllink_init(void);
- int vsllink_quit(void);
-
- /* CLI command handler functions */
- int vsllink_handle_usb_vid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int vsllink_handle_usb_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int vsllink_handle_usb_bulkin_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
- int vsllink_handle_usb_bulkout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
- /* Queue command functions */
- void vsllink_end_state(enum tap_state state);
- void vsllink_state_move(void);
- void vsllink_path_move(int num_states, enum tap_state *path);
- void vsllink_runtest(int num_cycles);
- void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, scan_command_t *command);
- void vsllink_reset(int trst, int srst);
- void vsllink_simple_command(u8 command);
-
- /* VSLLink tap buffer functions */
- void vsllink_tap_init(void);
- int vsllink_tap_execute(void);
- void vsllink_tap_ensure_space(int scans, int bytes);
- void vsllink_tap_append_scan(int length, u8 *buffer, scan_command_t *command, int offset);
-
- /* VSLLink lowlevel functions */
- typedef struct vsllink_jtag
- {
- struct usb_dev_handle* usb_handle;
- } vsllink_jtag_t;
-
- vsllink_jtag_t *vsllink_usb_open(void);
- void vsllink_usb_close(vsllink_jtag_t *vsllink_jtag);
- int vsllink_usb_message(vsllink_jtag_t *vsllink_jtag, int out_length, int in_length);
- int vsllink_usb_write(vsllink_jtag_t *vsllink_jtag, int out_length);
- int vsllink_usb_read(vsllink_jtag_t *vsllink_jtag);
-
- void vsllink_debug_buffer(u8 *buffer, int length);
-
- int vsllink_tms_data_len = 0;
- u8* vsllink_tms_cmd_pos;
-
- vsllink_jtag_t* vsllink_jtag_handle;
-
- /***************************************************************************/
- /* External interface implementation */
-
- jtag_interface_t vsllink_interface =
- {
- .name = "vsllink",
- .execute_queue = vsllink_execute_queue,
- .speed = vsllink_speed,
- .khz = vsllink_khz,
- .speed_div = vsllink_speed_div,
- .register_commands = vsllink_register_commands,
- .init = vsllink_init,
- .quit = vsllink_quit
- };
-
- int vsllink_execute_queue(void)
- {
- jtag_command_t *cmd = jtag_command_queue;
- int scan_size;
- enum scan_type type;
- u8 *buffer;
-
- DEBUG_JTAG_IO("--------------------------------------------------------------------------------");
-
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD;
- vsllink_usb_out_buffer_idx = 3;
- while (cmd != NULL)
- {
- switch (cmd->type)
- {
- case JTAG_END_STATE:
- DEBUG_JTAG_IO("end_state: %i", cmd->cmd.end_state->end_state);
-
- if (cmd->cmd.end_state->end_state != -1)
- {
- vsllink_end_state(cmd->cmd.end_state->end_state);
- }
- break;
-
- case JTAG_RUNTEST:
- DEBUG_JTAG_IO( "runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \
- cmd->cmd.runtest->end_state);
-
- if (cmd->cmd.runtest->end_state != -1)
- {
- vsllink_end_state(cmd->cmd.runtest->end_state);
- }
- vsllink_runtest(cmd->cmd.runtest->num_cycles);
- break;
-
- case JTAG_STATEMOVE:
- DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
-
- if (cmd->cmd.statemove->end_state != -1)
- {
- vsllink_end_state(cmd->cmd.statemove->end_state);
- }
- vsllink_state_move();
- break;
-
- case JTAG_PATHMOVE:
- DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
- cmd->cmd.pathmove->num_states, \
- cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
-
- vsllink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
- break;
-
- case JTAG_SCAN:
- if (cmd->cmd.scan->end_state != -1)
- {
- vsllink_end_state(cmd->cmd.scan->end_state);
- }
-
- scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
- if (cmd->cmd.scan->ir_scan)
- {
- DEBUG_JTAG_IO("JTAG Scan write IR(%d bits), end in %d:", scan_size, cmd->cmd.scan->end_state);
- }
- else
- {
- DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %d:", scan_size, cmd->cmd.scan->end_state);
- }
-
- #ifdef _DEBUG_JTAG_IO_
- vsllink_debug_buffer(buffer, (scan_size + 7) >> 3);
- #endif
-
- type = jtag_scan_type(cmd->cmd.scan);
-
- vsllink_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
- break;
-
- case JTAG_RESET:
- DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
-
- vsllink_tap_execute();
-
- if (cmd->cmd.reset->trst == 1)
- {
- cur_state = TAP_RESET;
- }
- vsllink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
-
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD;
- vsllink_usb_out_buffer_idx = 3;
- break;
-
- case JTAG_SLEEP:
- DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
- vsllink_tap_execute();
- jtag_sleep(cmd->cmd.sleep->us);
- break;
-
- default:
- LOG_ERROR("BUG: unknown JTAG command type encountered");
- exit(-1);
- }
- cmd = cmd->next;
- }
-
- return vsllink_tap_execute();
- }
-
- int vsllink_speed(int speed)
- {
- int result;
-
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_SPEED;
- vsllink_usb_out_buffer[1] = (speed >> 0) & 0xff;
- vsllink_usb_out_buffer[2] = (speed >> 8) & 0xFF;
-
- result = vsllink_usb_write(vsllink_jtag_handle, 3);
-
- if (result == 3)
- {
- return ERROR_OK;
- }
- else
- {
- LOG_ERROR("VSLLink setting speed failed (%d)", result);
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- int vsllink_khz(int khz, int *jtag_speed)
- {
- *jtag_speed = khz;
-
- return ERROR_OK;
- }
-
- int vsllink_speed_div(int jtag_speed, int *khz)
- {
- *khz = jtag_speed;
-
- return ERROR_OK;
- }
-
- int vsllink_register_commands(struct command_context_s *cmd_ctx)
- {
- register_command(cmd_ctx, NULL, "vsllink_usb_vid", vsllink_handle_usb_vid_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "vsllink_usb_pid", vsllink_handle_usb_pid_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "vsllink_usb_bulkin", vsllink_handle_usb_bulkin_command,
- COMMAND_CONFIG, NULL);
- register_command(cmd_ctx, NULL, "vsllink_usb_bulkout", vsllink_handle_usb_bulkout_command,
- COMMAND_CONFIG, NULL);
-
- return ERROR_OK;
- }
-
- int vsllink_init(void)
- {
- int check_cnt;
- int result;
- char version_str[100];
-
- vsllink_usb_in_buffer = malloc(VSLLINK_BufferSize);
- vsllink_usb_out_buffer = malloc(VSLLINK_BufferSize);
- if ((vsllink_usb_in_buffer == NULL) || (vsllink_usb_out_buffer == NULL))
- {
- LOG_ERROR("Not enough memory");
- exit(-1);
- }
-
- vsllink_jtag_handle = vsllink_usb_open();
-
- if (vsllink_jtag_handle == 0)
- {
- LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
- return ERROR_JTAG_INIT_FAILED;
- }
-
- check_cnt = 0;
- while (check_cnt < 3)
- {
- vsllink_simple_command(VSLLINK_CMD_CONN);
- result = vsllink_usb_read(vsllink_jtag_handle);
-
- if (result > 2)
- {
- vsllink_usb_in_buffer[result] = 0;
- VSLLINK_BufferSize = vsllink_usb_in_buffer[0] + (vsllink_usb_in_buffer[1] << 8);
- strncpy(version_str, (char *)vsllink_usb_in_buffer + 2, sizeof(version_str));
- LOG_INFO(version_str);
-
- // free the pre-alloc memroy
- free(vsllink_usb_in_buffer);
- free(vsllink_usb_out_buffer);
- vsllink_usb_in_buffer = NULL;
- vsllink_usb_out_buffer = NULL;
-
- // alloc new memory
- vsllink_usb_in_buffer = malloc(VSLLINK_BufferSize);
- vsllink_usb_out_buffer = malloc(VSLLINK_BufferSize);
- if ((vsllink_usb_in_buffer == NULL) || (vsllink_usb_out_buffer == NULL))
- {
- LOG_ERROR("Not enough memory");
- exit(-1);
- }
- else
- {
- LOG_INFO("buffer size for USB is %d bytes", VSLLINK_BufferSize);
- }
- break;
- }
- vsllink_simple_command(VSLLINK_CMD_DISCONN);
-
- check_cnt++;
- }
-
- if (check_cnt == 3)
- {
- // It's dangerout to proced
- LOG_ERROR("VSLLink initial failed");
- exit(-1);
- }
-
- // Set SRST and TRST to output, Set USR1 and USR2 to input
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_PORTDIR;
- vsllink_usb_out_buffer[1] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST | JTAG_PINMSK_USR1 | JTAG_PINMSK_USR2;
- vsllink_usb_out_buffer[2] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST;
- result = vsllink_usb_write(vsllink_jtag_handle, 3);
- if (result != 3)
- {
- LOG_ERROR("VSLLink USB send data error");
- exit(-1);
- }
-
- vsllink_reset(0, 0);
-
- LOG_INFO("VSLLink JTAG Interface ready");
-
- vsllink_tap_init();
-
- return ERROR_OK;
- }
-
- int vsllink_quit(void)
- {
- if ((vsllink_usb_in_buffer != NULL) && (vsllink_usb_out_buffer != NULL))
- {
- vsllink_simple_command(VSLLINK_CMD_DISCONN);
- vsllink_usb_close(vsllink_jtag_handle);
- }
-
- if (vsllink_usb_in_buffer != NULL)
- {
- free(vsllink_usb_in_buffer);
- }
- if (vsllink_usb_out_buffer != NULL)
- {
- free(vsllink_usb_out_buffer);
- }
- return ERROR_OK;
- }
-
- // when vsllink_tms_data_len > 0, vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] is the byte that need to be appended.
- // length of VSLLINK_CMDJTAGSEQ_TMSBYTE has been set.
- void VSLLINK_add_tms_from_RTI(enum tap_state state)
- {
- u8 tms_scan = VSLLINK_TAP_MOVE(TAP_IDLE, state);
- u16 tms2;
-
- if ((cur_state != TAP_IDLE) || (state == TAP_IDLE) || (vsllink_tms_data_len <= 0) || (vsllink_tms_data_len >= 8) || (vsllink_tms_cmd_pos == NULL))
- {
- LOG_ERROR("There MUST be some bugs in the driver");
- exit(-1);
- }
-
- tms2 = (tms_scan & VSLLINK_BIT_MSK[VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[1][tap_move_map[state]][1]]) << vsllink_tms_data_len;
- if (VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[1][tap_move_map[state]][0] == 1)
- {
- tms2 |= VSLLINK_BIT_MSK[8 - vsllink_tms_data_len] << (vsllink_tms_data_len + VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[1][tap_move_map[state]][1]);
- }
- tms2 |= (tms_scan >> VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[1][tap_move_map[state]][1]) << (8 + VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[1][tap_move_map[state]][1]);
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (tms2 >> 0) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms2 >> 8) & 0xff;
-
- vsllink_tms_data_len = 0;
- vsllink_tms_cmd_pos = NULL;
- }
-
- /***************************************************************************/
- /* Queue command implementations */
-
- void vsllink_end_state(enum tap_state state)
- {
- if (tap_move_map[state] != -1)
- {
- end_state = state;
- }
- else
- {
- LOG_ERROR("BUG: %i is not a valid end state", state);
- exit(-1);
- }
- }
-
- /* Goes to the end state. */
- void vsllink_state_move(void)
- {
- if (vsllink_tms_data_len > 0)
- {
- VSLLINK_add_tms_from_RTI(end_state);
- }
- else
- {
- vsllink_tap_ensure_space(0, 2);
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(cur_state, end_state);
- }
-
- cur_state = end_state;
- }
-
- // write tms from current vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]
- void vsllink_add_path(int start, int num, enum tap_state *path)
- {
- int i;
-
- for (i = start; i < (start + num); i++)
- {
- if ((i & 7) == 0)
- {
- if (i > 0)
- {
- vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0;
- }
- else
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
- }
- }
-
- if (path[i - start] == tap_transitions[cur_state].high)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= 1 << (i & 7);
- }
- else
- {
- LOG_ERROR("BUG: %d -> %d isn't a valid TAP transition", cur_state, path[i]);
- exit(-1);
- }
-
- cur_state = path[i];
- }
- end_state = cur_state;
- }
-
- void vsllink_path_move(int num_states, enum tap_state *path)
- {
- int i, tms_len, tms_cmd_pos, path_idx = 0;
-
- if (vsllink_tms_data_len > 0)
- {
- if ((vsllink_tms_data_len + num_states) < 8)
- {
- vsllink_add_path(vsllink_tms_data_len, num_states, path);
- num_states = 0;
- }
- else if ((vsllink_tms_data_len + num_states) < 16)
- {
- if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) \
- < VSLLINK_CMDJTAGSEQ_LENMSK)
- {
- *vsllink_tms_cmd_pos++;
- vsllink_add_path(vsllink_tms_data_len, num_states, path);
- }
- else
- {
- // need a new VSLLINK_CMDJTAGSEQ_TMSBYTE command
- // if vsllink_tms_data_len > 0, length of VSLLINK_CMDJTAGSEQ_TMSBYTE MUST be > 1(tms_len > 2)
- *vsllink_tms_cmd_pos--;
- vsllink_add_path(vsllink_tms_data_len, 8 - vsllink_tms_data_len, path);
- vsllink_usb_out_buffer_idx++;
- vsllink_tap_ensure_space(0, 3);
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
- vsllink_tms_cmd_pos = vsllink_usb_out_buffer + vsllink_usb_out_buffer_idx;
- vsllink_add_path(vsllink_tms_data_len, num_states + vsllink_tms_data_len - 8, path + 8 - vsllink_tms_data_len);
- }
- vsllink_tms_data_len = (vsllink_tms_data_len + num_states) & 7;
- num_states = 0;
- }
- else
- {
- vsllink_add_path(vsllink_tms_data_len, 16 - vsllink_tms_data_len, path);
- path_idx = 16 - vsllink_tms_data_len;
- vsllink_usb_out_buffer_idx++;
-
- num_states -= 16 - vsllink_tms_data_len;
- path += 16 - vsllink_tms_data_len;
- vsllink_tms_data_len = 0;
- vsllink_tms_cmd_pos = NULL;
- }
- }
-
- if (num_states > 0)
- {
- // Normal operation, don't need to append tms data
- vsllink_tms_data_len = num_states & 7;
-
- while (num_states > 0)
- {
- if (num_states > ((VSLLINK_CMDJTAGSEQ_LENMSK + 1) * 8))
- {
- i = (VSLLINK_CMDJTAGSEQ_LENMSK + 1) * 8;
- }
- else
- {
- i = num_states;
- }
- tms_len = (i + 7) >> 3;
- vsllink_tap_ensure_space(0, tms_len + 2);
- tms_cmd_pos = vsllink_usb_out_buffer_idx;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | (tms_len - 1);
-
- vsllink_add_path(0, i, path + path_idx);
-
- path_idx += i;
- num_states -= i;
- }
-
- if (vsllink_tms_data_len > 0)
- {
- if (tms_len < (VSLLINK_CMDJTAGSEQ_LENMSK + 1))
- {
- vsllink_usb_out_buffer[tms_cmd_pos]++;
- vsllink_usb_out_buffer = vsllink_usb_out_buffer + tms_cmd_pos;
- }
- else
- {
- vsllink_usb_out_buffer[tms_cmd_pos]--;
- tms_len = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
- vsllink_tap_ensure_space(0, 3);
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = tms_len;
- }
- }
- }
- }
-
- void vsllink_runtest(int num_cycles)
- {
- int i = 0, j;
- int tms_len, first_tms = 0, tms_cmd_pos = 0;
- enum tap_state saved_end_state = end_state;
-
- if (cur_state != TAP_IDLE)
- {
- vsllink_end_state(TAP_IDLE);
-
- if (vsllink_tms_data_len > 0)
- {
- VSLLINK_add_tms_from_RTI(end_state);
- }
- else
- {
- first_tms = 1;
- }
- }
-
- if (vsllink_tms_data_len > 0)
- {
- // cur_state == TAP_IDLE
- if ((vsllink_tms_data_len + num_cycles) < 8)
- {
- vsllink_tms_data_len += num_cycles;
- num_cycles = 0;
- }
- else if ((vsllink_tms_data_len + num_cycles) < 16)
- {
- if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) \
- < VSLLINK_CMDJTAGSEQ_LENMSK)
- {
- *vsllink_tms_cmd_pos++;
- vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0;
- }
- else
- {
- // need a new VSLLINK_CMDJTAGSEQ_TMSBYTE command
- // if vsllink_tms_data_len > 0, length of VSLLINK_CMDJTAGSEQ_TMSBYTE MUST be > 1(tms_len > 2)
- *vsllink_tms_cmd_pos--;
- vsllink_tap_ensure_space(0, 3);
- vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1;
- vsllink_tms_cmd_pos = vsllink_usb_out_buffer + vsllink_usb_out_buffer_idx;
- vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0;
- }
- vsllink_tms_data_len = (vsllink_tms_data_len + num_cycles) & 7;
- num_cycles = 0;
- }
- else
- {
- vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0;
- vsllink_usb_out_buffer_idx++;
-
- num_cycles -= 16 - vsllink_tms_data_len;
- vsllink_tms_data_len = 0;
- vsllink_tms_cmd_pos = NULL;
- }
- }
-
- tms_len = ((num_cycles + 7) >> 3) + first_tms;
- if (tms_len > 0)
- {
- // Normal operation, don't need to append tms data
- vsllink_tms_data_len = num_cycles & 7;
-
- if (vsllink_tms_data_len > 0)
- {
- tms_len += 1;
- }
- // tms_len includes the length of tms byte to append
-
- // Make sure there is enough space
- // 1 more byte maybe needed for the last tms move
- vsllink_tap_ensure_space(0, (tms_len / VSLLINK_CMDJTAGSEQ_LENMSK) + tms_len + 1);
-
- while(tms_len > 0)
- {
- if (tms_len > (VSLLINK_CMDJTAGSEQ_LENMSK + 1))
- {
- i = VSLLINK_CMDJTAGSEQ_LENMSK + 1;
- }
- else
- {
- i = tms_len;
- }
-
- tms_cmd_pos = vsllink_usb_out_buffer_idx;
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | (i - 1);
-
- if (first_tms)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(cur_state, end_state);
- first_tms = 0;
- j = i - 1;
- }
- else
- {
- j = i;
- }
-
- while (j-- > 0)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
- }
-
- tms_len -= i;
- }
-
- // post process vsllink_usb_out_buffer_idx
- if (vsllink_tms_data_len > 0)
- {
- vsllink_usb_out_buffer_idx -= 2;
- }
-
- // Set end_state
- vsllink_end_state(saved_end_state);
- cur_state = TAP_IDLE;
- if (saved_end_state != TAP_IDLE)
- {
- if (vsllink_tms_data_len > 0)
- {
- VSLLINK_add_tms_from_RTI(end_state);
- }
- else
- {
- if (i < (VSLLINK_CMDJTAGSEQ_LENMSK + 1))
- {
- vsllink_usb_out_buffer[tms_cmd_pos]++;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(TAP_IDLE, end_state);
- }
- else
- {
- vsllink_tap_ensure_space(0, 2);
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(TAP_IDLE, end_state);
- }
- }
- cur_state = saved_end_state;
- }
-
- if (vsllink_tms_data_len > 0)
- {
- vsllink_tms_cmd_pos = vsllink_usb_out_buffer + tms_cmd_pos;
- }
- }
- else
- {
- // Set end_state if no RTI shifts
- vsllink_end_state(saved_end_state);
- cur_state = TAP_IDLE;
- if (saved_end_state != TAP_IDLE)
- {
- vsllink_tap_ensure_space(0, 2);
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(TAP_IDLE, end_state);
-
- cur_state = saved_end_state;
- }
- }
- }
-
- void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, scan_command_t *command)
- {
- enum tap_state saved_end_state;
- u8 bits_left, tms_tmp, tdi_len;
- int i;
-
- tdi_len = ((scan_size + 7) >> 3);
- if ((tdi_len + 7) > VSLLINK_BufferSize)
- {
- LOG_ERROR("Your implementation of VSLLink has not enough buffer");
- exit(-1);
- }
-
- saved_end_state = end_state;
-
- /* Move to appropriate scan state */
- vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
-
- if (vsllink_tms_data_len > 0)
- {
- if (cur_state == end_state)
- {
- *vsllink_tms_cmd_pos--;
- tms_tmp = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx];
- vsllink_tap_ensure_space(1, tdi_len + 7);
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN | 1;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1) >> 0) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1)>> 8) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = tms_tmp;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = buffer[0] << (8 - vsllink_tms_data_len);
-
- for (i = 0; i < tdi_len; i++)
- {
- buffer[i] >>= 8 - vsllink_tms_data_len;
- if (i != tdi_len)
- {
- buffer[i] += buffer[i + 1] << vsllink_tms_data_len;
- }
- }
-
- vsllink_tap_append_scan(scan_size - vsllink_tms_data_len, buffer, command, vsllink_tms_data_len);
- scan_size -= 8 - vsllink_tms_data_len;
- }
- else
- {
- VSLLINK_add_tms_from_RTI(end_state);
- vsllink_tap_ensure_space(1, tdi_len + 5);
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tdi_len >> 0) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tdi_len >> 8) & 0xff;
-
- vsllink_tap_append_scan(scan_size, buffer, command, 0);
- }
- }
- else
- {
- vsllink_tap_ensure_space(1, tdi_len + 7);
-
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN | 1;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1) >> 0) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = ((tdi_len + 1)>> 8) & 0xff;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(cur_state, end_state);
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
-
- vsllink_tap_append_scan(scan_size, buffer, command, 8);
- }
- vsllink_end_state(saved_end_state);
-
- bits_left = scan_size & 0x07;
- cur_state = ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE;
-
- if (bits_left > 0)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 1 << (bits_left - 1);
- }
- else
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 1 << 7;
- }
-
- if (cur_state != end_state)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE_FROM_E1[tap_move_map[end_state]];
- }
- else
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
- }
-
- cur_state = end_state;
- }
-
- void vsllink_reset(int trst, int srst)
- {
- int result;
-
- LOG_DEBUG("trst: %i, srst: %i", trst, srst);
-
- /* Signals are active low */
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_SET_PORT;
- vsllink_usb_out_buffer[1] = JTAG_PINMSK_SRST | JTAG_PINMSK_TRST;
- vsllink_usb_out_buffer[2] = 0;
- if (srst == 0)
- {
- vsllink_usb_out_buffer[2] |= JTAG_PINMSK_SRST;
- }
- if (trst == 0)
- {
- vsllink_usb_out_buffer[2] |= JTAG_PINMSK_TRST;
- }
-
- result = vsllink_usb_write(vsllink_jtag_handle, 3);
- if (result != 3)
- {
- LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result);
- }
- }
-
- void vsllink_simple_command(u8 command)
- {
- int result;
-
- DEBUG_JTAG_IO("0x%02x", command);
-
- vsllink_usb_out_buffer[0] = command;
- result = vsllink_usb_write(vsllink_jtag_handle, 1);
-
- if (result != 1)
- {
- LOG_ERROR("VSLLink command 0x%02x failed (%d)", command, result);
- }
- }
-
- int vsllink_handle_usb_vid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc != 1) {
- LOG_ERROR("parameter error, should be one parameter for VID");
- return ERROR_OK;
- }
-
- vsllink_vid = strtol(args[0], NULL, 0);
-
- return ERROR_OK;
- }
-
- int vsllink_handle_usb_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc != 1) {
- LOG_ERROR("parameter error, should be one parameter for PID");
- return ERROR_OK;
- }
-
- vsllink_pid = strtol(args[0], NULL, 0);
-
- return ERROR_OK;
- }
-
- int vsllink_handle_usb_bulkin_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc != 1) {
- LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint");
- return ERROR_OK;
- }
-
- vsllink_bulkin = strtol(args[0], NULL, 0) | 0x80;
-
- return ERROR_OK;
- }
-
- int vsllink_handle_usb_bulkout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
- {
- if (argc != 1) {
- LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint");
- return ERROR_OK;
- }
-
- vsllink_bulkout = strtol(args[0], NULL, 0);
-
- return ERROR_OK;
- }
-
- /***************************************************************************/
- /* VSLLink tap functions */
-
- typedef struct
- {
- int length; /* Number of bits to read */
- int offset;
- scan_command_t *command; /* Corresponding scan command */
- u8 *buffer;
- } pending_scan_result_t;
-
- #define MAX_PENDING_SCAN_RESULTS 256
-
- static int pending_scan_results_length;
- static pending_scan_result_t pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
-
- void vsllink_tap_init(void)
- {
- vsllink_usb_out_buffer_idx = 0;
- vsllink_usb_in_want_length = 0;
- pending_scan_results_length = 0;
- }
-
- void vsllink_tap_ensure_space(int scans, int bytes)
- {
- int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
- int available_bytes = VSLLINK_BufferSize - vsllink_usb_out_buffer_idx;
-
- if (scans > available_scans || bytes > available_bytes)
- {
- vsllink_tap_execute();
- vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD;
- vsllink_usb_out_buffer_idx = 3;
- }
- }
-
- void vsllink_tap_append_scan(int length, u8 *buffer, scan_command_t *command, int offset)
- {
- pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
- int i;
-
- if (offset > 0)
- {
- vsllink_usb_in_want_length += ((length + 7) >> 3) + 1;
- }
- else
- {
- vsllink_usb_in_want_length += (length + 7) >> 3;
- }
- pending_scan_result->length = length;
- pending_scan_result->offset = offset;
- pending_scan_result->command = command;
- pending_scan_result->buffer = buffer;
-
- for (i = 0; i < ((length + 7) >> 3); i++)
- {
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = buffer[i];
- }
-
- pending_scan_results_length++;
- }
-
- /* Pad and send a tap sequence to the device, and receive the answer.
- * For the purpose of padding we assume that we are in idle or pause state. */
- int vsllink_tap_execute(void)
- {
- int i;
- int result;
- int first = 0;
-
- if (vsllink_tms_data_len > 0)
- {
- if (vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] & (1 << (vsllink_tms_data_len - 1)))
- {
- // last tms bit is '1'
- // the only possible state is TLR, no need to control the number of shifts in RLT
- // There MUST be some errors in the code
- LOG_ERROR("last tms bit is '1'");
- exit(-1);
- }
- else
- {
- // last tms bit is '0'
- vsllink_usb_out_buffer_idx++;
- vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
- vsllink_tms_data_len = 0;
- }
- }
-
- if (vsllink_usb_out_buffer_idx > 3)
- {
- if (vsllink_usb_out_buffer[0] == VSLLINK_CMD_HW_JTAGSEQCMD)
- {
- vsllink_usb_out_buffer[1] = (vsllink_usb_out_buffer_idx >> 0) & 0xff;
- vsllink_usb_out_buffer[2] = (vsllink_usb_out_buffer_idx >> 8) & 0xff;
- }
-
- result = vsllink_usb_message(vsllink_jtag_handle, vsllink_usb_out_buffer_idx, vsllink_usb_in_want_length);
-
- if (result == vsllink_usb_in_want_length)
- {
- for (i = 0; i < pending_scan_results_length; i++)
- {
- pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[i];
- u8 *buffer = pending_scan_result->buffer;
- int length = pending_scan_result->length;
- int offset = pending_scan_result->offset;
- scan_command_t *command = pending_scan_result->command;
-
- /* Copy to buffer */
- buf_set_buf(vsllink_usb_in_buffer, first * 8 + offset, buffer, 0, length);
- first += (length + offset + 7) >> 3;
-
- DEBUG_JTAG_IO("JTAG scan read(%d bits):", length);
- #ifdef _DEBUG_JTAG_IO_
- vsllink_debug_buffer(buffer, (length + 7) >> 3);
- #endif
-
- if (jtag_read_buffer(buffer, command) != ERROR_OK)
- {
- vsllink_tap_init();
- return ERROR_JTAG_QUEUE_FAILED;
- }
-
- if (pending_scan_result->buffer != NULL)
- {
- free(pending_scan_result->buffer);
- pending_scan_result->buffer = NULL;
- }
- }
- }
- else
- {
- LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result, vsllink_usb_in_want_length);
- return ERROR_JTAG_QUEUE_FAILED;
- }
-
- vsllink_tap_init();
- }
-
- return ERROR_OK;
- }
-
- /*****************************************************************************/
- /* VSLLink USB low-level functions */
-
- vsllink_jtag_t* vsllink_usb_open(void)
- {
- struct usb_bus *busses;
- struct usb_bus *bus;
- struct usb_device *dev;
-
- vsllink_jtag_t *result;
-
- result = (vsllink_jtag_t*) malloc(sizeof(vsllink_jtag_t));
-
- usb_init();
- usb_find_busses();
- usb_find_devices();
-
- busses = usb_get_busses();
-
- /* find vsllink_jtag device in usb bus */
-
- for (bus = busses; bus; bus = bus->next)
- {
- for (dev = bus->devices; dev; dev = dev->next)
- {
- if ((dev->descriptor.idVendor == vsllink_vid) && (dev->descriptor.idProduct == vsllink_pid))
- {
- result->usb_handle = usb_open(dev);
-
- /* usb_set_configuration required under win32 */
- usb_set_configuration(result->usb_handle, dev->config[0].bConfigurationValue);
- usb_claim_interface(result->usb_handle, 0);
-
- #if 0
- /*
- * This makes problems under Mac OS X. And is not needed
- * under Windows. Hopefully this will not break a linux build
- */
- usb_set_altinterface(result->usb_handle, 0);
- #endif
- return result;
- }
- }
- }
-
- free(result);
- return NULL;
- }
-
- void vsllink_usb_close(vsllink_jtag_t *vsllink_jtag)
- {
- usb_close(vsllink_jtag->usb_handle);
- free(vsllink_jtag);
- }
-
- /* Send a message and receive the reply. */
- int vsllink_usb_message(vsllink_jtag_t *vsllink_jtag, int out_length, int in_length)
- {
- int result;
-
- result = vsllink_usb_write(vsllink_jtag, out_length);
- if (result == out_length)
- {
- if (in_length > 0)
- {
- result = vsllink_usb_read(vsllink_jtag);
- if (result == in_length )
- {
- return result;
- }
- else
- {
- LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result);
- return -1;
- }
- }
- return 0;
- }
- else
- {
- LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result);
- return -1;
- }
- }
-
- /* Write data from out_buffer to USB. */
- int vsllink_usb_write(vsllink_jtag_t *vsllink_jtag, int out_length)
- {
- int result;
-
- if (out_length > VSLLINK_BufferSize)
- {
- LOG_ERROR("vsllink_jtag_write illegal out_length=%d (max=%d)", out_length, VSLLINK_BufferSize);
- return -1;
- }
-
- result = usb_bulk_write(vsllink_jtag->usb_handle, vsllink_bulkout, \
- (char *)vsllink_usb_out_buffer, out_length, VSLLINK_USB_TIMEOUT);
-
- DEBUG_JTAG_IO("vsllink_usb_write, out_length = %d, result = %d", out_length, result);
-
- #ifdef _DEBUG_USB_COMMS_
- LOG_DEBUG("USB out:");
- vsllink_debug_buffer(vsllink_usb_out_buffer, out_length);
- #endif
-
- #ifdef _VSLLINK_IN_DEBUG_MODE_
- usleep(100000);
- #endif
-
- return result;
- }
-
- /* Read data from USB into in_buffer. */
- int vsllink_usb_read(vsllink_jtag_t *vsllink_jtag)
- {
- int result = usb_bulk_read(vsllink_jtag->usb_handle, vsllink_bulkin, \
- (char *)vsllink_usb_in_buffer, VSLLINK_BufferSize, VSLLINK_USB_TIMEOUT);
-
- DEBUG_JTAG_IO("vsllink_usb_read, result = %d", result);
-
- #ifdef _DEBUG_USB_COMMS_
- LOG_DEBUG("USB in:");
- vsllink_debug_buffer(vsllink_usb_in_buffer, result);
- #endif
- return result;
- }
-
- #define BYTES_PER_LINE 16
-
- void vsllink_debug_buffer(u8 *buffer, int length)
- {
- char line[81];
- char s[4];
- int i;
- int j;
-
- for (i = 0; i < length; i += BYTES_PER_LINE)
- {
- snprintf(line, 5, "%04x", i);
- for (j = i; j < i + BYTES_PER_LINE && j < length; j++)
- {
- snprintf(s, 4, " %02x", buffer[j]);
- strcat(line, s);
- }
- LOG_DEBUG(line);
- }
- }
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