/*************************************************************************** * Copyright (C) 2009 by Simon Qian * * * * 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 "interface.h" #include "commands.h" #include //#define _VSLLINK_IN_DEBUG_MODE_ #define VSLLINK_MODE_NORMAL 0 #define VSLLINK_MODE_DMA 1 static uint16_t vsllink_usb_vid; static uint16_t vsllink_usb_pid; static uint8_t vsllink_usb_bulkout; static uint8_t vsllink_usb_bulkin; static uint8_t vsllink_usb_interface; static uint8_t vsllink_mode = VSLLINK_MODE_NORMAL; static int VSLLINK_USB_TIMEOUT = 10000; static int VSLLINK_BufferSize = 1024; /* Global USB buffers */ static int vsllink_usb_out_buffer_idx; static int vsllink_usb_in_want_length; static uint8_t* vsllink_usb_in_buffer = NULL; static uint8_t* 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_CMD_HW_JTAGHLCMD 0xA1 #define VSLLINK_CMD_HW_SWDCMD 0xA2 #define VSLLINK_CMD_HW_JTAGRAWCMD 0xA3 #define VSLLINK_CMDJTAGSEQ_TMSBYTE 0x00 #define VSLLINK_CMDJTAGSEQ_TMSCLOCK 0x40 #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_ndx(from)][tap_move_ndx(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 */ static uint8_t VSLLINK_tap_move[6][6] = { /* TLR RTI SD PD SI PI */ {0xff, 0x7f, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */ {0xff, 0x00, 0x45, 0x05, 0x4b, 0x0b}, /* RTI */ {0xff, 0x61, 0x00, 0x01, 0x0f, 0x2f}, /* SD */ {0xfe, 0x60, 0x40, 0x5c, 0x3c, 0x5e}, /* PD */ {0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */ {0xfe, 0x60, 0x38, 0x5c, 0x40, 0x5e} /* PI */ }; struct insert_insignificant_operation { unsigned char insert_value; unsigned char insert_position; }; static struct insert_insignificant_operation VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[6][6] = { /* 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 */ }; static uint8_t VSLLINK_BIT_MSK[8] = { 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f }; struct pending_scan_result { int offset; int length; /* Number of bits to read */ struct scan_command *command; /* Corresponding scan command */ uint8_t *buffer; }; #define MAX_PENDING_SCAN_RESULTS 256 static int pending_scan_results_length; static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS]; /* Queue command functions */ static void vsllink_end_state(tap_state_t state); static void vsllink_state_move_dma(void); static void vsllink_state_move_normal(void); static void (*vsllink_state_move)(void); static void vsllink_path_move_dma(int num_states, tap_state_t *path); static void vsllink_path_move_normal(int num_states, tap_state_t *path); static void (*vsllink_path_move)(int num_states, tap_state_t *path); static void vsllink_runtest(int num_cycles); static void vsllink_stableclocks_dma(int num_cycles, int tms); static void vsllink_stableclocks_normal(int num_cycles, int tms); static void (*vsllink_stableclocks)(int num_cycles, int tms); static void vsllink_scan_dma(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command); static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command); static void (*vsllink_scan)(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command); static void vsllink_reset(int trst, int srst); static void vsllink_simple_command(uint8_t command); static int vsllink_connect(void); static int vsllink_disconnect(void); /* VSLLink tap buffer functions */ static void vsllink_tap_append_step(int tms, int tdi); static void vsllink_tap_init_dma(void); static void vsllink_tap_init_normal(void); static void (*vsllink_tap_init)(void); static int vsllink_tap_execute_dma(void); static int vsllink_tap_execute_normal(void); static int (*vsllink_tap_execute)(void); static void vsllink_tap_ensure_space_dma(int scans, int length); static void vsllink_tap_ensure_space_normal(int scans, int length); static void (*vsllink_tap_ensure_space)(int scans, int length); static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, struct scan_command *command); static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, struct scan_command *command, int offset); /* VSLLink lowlevel functions */ struct vsllink { struct usb_dev_handle* usb_handle; }; static struct vsllink *vsllink_usb_open(void); static void vsllink_usb_close(struct vsllink *vsllink); static int vsllink_usb_message(struct vsllink *vsllink, int out_length, int in_length); static int vsllink_usb_write(struct vsllink *vsllink, int out_length); static int vsllink_usb_read(struct vsllink *vsllink); #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_ static void vsllink_debug_buffer(uint8_t *buffer, int length); #endif static int vsllink_tms_data_len = 0; static uint8_t* vsllink_tms_cmd_pos; static int tap_length = 0; static int tap_buffer_size = 0; static uint8_t *tms_buffer = NULL; static uint8_t *tdi_buffer = NULL; static uint8_t *tdo_buffer = NULL; static int last_tms; static struct vsllink* vsllink_handle = NULL; static void reset_command_pointer(void) { if (vsllink_mode == VSLLINK_MODE_NORMAL) { vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD; vsllink_usb_out_buffer_idx = 3; } else { tap_length = 0; } } static int vsllink_execute_queue(void) { jtag_command_t *cmd = jtag_command_queue; int scan_size; enum scan_type type; uint8_t *buffer; DEBUG_JTAG_IO("--------------------------------- vsllink -------------------------------------"); reset_command_pointer(); while (cmd != NULL) { switch (cmd->type) { case JTAG_RUNTEST: DEBUG_JTAG_IO("runtest %i cycles, end in %s", cmd->cmd.runtest->num_cycles, \ tap_state_name(cmd->cmd.runtest->end_state)); 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 %s", tap_state_name(cmd->cmd.statemove->end_state)); vsllink_end_state(cmd->cmd.statemove->end_state); vsllink_state_move(); break; case JTAG_PATHMOVE: DEBUG_JTAG_IO("pathmove: %i states, end in %s", \ cmd->cmd.pathmove->num_states, \ tap_state_name(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: 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 %s:", scan_size, tap_state_name(cmd->cmd.scan->end_state)); } else { DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %s:", scan_size, tap_state_name(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) { tap_set_state(TAP_RESET); } vsllink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst); break; case JTAG_SLEEP: DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us); vsllink_tap_execute(); jtag_sleep(cmd->cmd.sleep->us); break; case JTAG_STABLECLOCKS: DEBUG_JTAG_IO("add %d clocks", cmd->cmd.stableclocks->num_cycles); switch (tap_get_state()) { case TAP_RESET: // tms should be '1' to stay in TAP_RESET mode scan_size = 1; break; case TAP_DRSHIFT: case TAP_IDLE: case TAP_DRPAUSE: case TAP_IRSHIFT: case TAP_IRPAUSE: // in other mode, tms should be '0' scan_size = 0; break; /* above stable states are OK */ default: LOG_ERROR("jtag_add_clocks() was called with TAP in non-stable state \"%s\"", tap_state_name(tap_get_state())); exit(-1); } vsllink_stableclocks(cmd->cmd.stableclocks->num_cycles, scan_size); break; default: LOG_ERROR("BUG: unknown JTAG command type encountered: %d", cmd->type); exit(-1); } cmd = cmd->next; } return vsllink_tap_execute(); } static 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_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; } static int vsllink_khz(int khz, int *jtag_speed) { *jtag_speed = khz; return ERROR_OK; } static int vsllink_speed_div(int jtag_speed, int *khz) { *khz = jtag_speed; return ERROR_OK; } static int vsllink_init(void) { int check_cnt, to_tmp; 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_handle = vsllink_usb_open(); if (vsllink_handle == 0) { LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions."); return ERROR_JTAG_INIT_FAILED; } LOG_DEBUG("vsllink found on %04X:%04X", vsllink_usb_vid, vsllink_usb_pid); to_tmp = VSLLINK_USB_TIMEOUT; VSLLINK_USB_TIMEOUT = 100; check_cnt = 0; while (check_cnt < 5) { vsllink_simple_command(0x00); result = vsllink_usb_read(vsllink_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("%s", 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); } // alloc memory for dma mode if (vsllink_mode == VSLLINK_MODE_DMA) { tap_buffer_size = (VSLLINK_BufferSize - 3) / 2; tms_buffer = (uint8_t*)malloc(tap_buffer_size); tdi_buffer = (uint8_t*)malloc(tap_buffer_size); tdo_buffer = (uint8_t*)malloc(tap_buffer_size); if ((tms_buffer == NULL) || (tdi_buffer == NULL) || (tdo_buffer == NULL)) { LOG_ERROR("Not enough memory"); exit(-1); } } 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); } VSLLINK_USB_TIMEOUT = to_tmp; // connect to vsllink vsllink_connect(); // initialize function pointers if (vsllink_mode == VSLLINK_MODE_NORMAL) { // normal mode vsllink_state_move = vsllink_state_move_normal; vsllink_path_move = vsllink_path_move_normal; vsllink_stableclocks = vsllink_stableclocks_normal; vsllink_scan = vsllink_scan_normal; vsllink_tap_init = vsllink_tap_init_normal; vsllink_tap_execute = vsllink_tap_execute_normal; vsllink_tap_ensure_space = vsllink_tap_ensure_space_normal; LOG_INFO("vsllink run in NORMAL mode"); } else { // dma mode vsllink_state_move = vsllink_state_move_dma; vsllink_path_move = vsllink_path_move_dma; vsllink_stableclocks = vsllink_stableclocks_dma; vsllink_scan = vsllink_scan_dma; vsllink_tap_init = vsllink_tap_init_dma; vsllink_tap_execute = vsllink_tap_execute_dma; vsllink_tap_ensure_space = vsllink_tap_ensure_space_dma; LOG_INFO("vsllink run in DMA mode"); } // 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; if (vsllink_usb_write(vsllink_handle, 3) != 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; } static int vsllink_quit(void) { if ((vsllink_usb_in_buffer != NULL) && (vsllink_usb_out_buffer != NULL)) { // Set all pins 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] = 0; if (vsllink_usb_write(vsllink_handle, 3) != 3) { LOG_ERROR("VSLLink USB send data error"); exit(-1); } // disconnect vsllink_disconnect(); vsllink_usb_close(vsllink_handle); vsllink_handle = NULL; } if (vsllink_usb_in_buffer != NULL) { free(vsllink_usb_in_buffer); vsllink_usb_in_buffer = NULL; } if (vsllink_usb_out_buffer != NULL) { free(vsllink_usb_out_buffer); vsllink_usb_out_buffer = NULL; } return ERROR_OK; } /***************************************************************************/ /* Queue command implementations */ static int vsllink_disconnect(void) { vsllink_simple_command(VSLLINK_CMD_DISCONN); return ERROR_OK; } static int vsllink_connect(void) { char vsllink_str[100]; vsllink_usb_out_buffer[0] = VSLLINK_CMD_CONN; vsllink_usb_out_buffer[1] = vsllink_mode; vsllink_usb_message(vsllink_handle, 2, 0); if (vsllink_usb_read(vsllink_handle) > 2) { strncpy(vsllink_str, (char *)vsllink_usb_in_buffer + 2, sizeof(vsllink_str)); LOG_INFO("%s", vsllink_str); } 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, no need to set it here. static void vsllink_append_tms(void) { uint8_t tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state()); uint16_t tms2; struct insert_insignificant_operation *insert = \ &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())]; if (((tap_get_state() != TAP_RESET) && (tap_get_state() != TAP_IDLE) && (tap_get_state() != TAP_DRPAUSE) && (tap_get_state() != TAP_IRPAUSE)) || \ (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[insert->insert_position]) << \ vsllink_tms_data_len; if (insert->insert_value == 1) { tms2 |= VSLLINK_BIT_MSK[8 - vsllink_tms_data_len] << \ (vsllink_tms_data_len + insert->insert_position); } tms2 |= (tms_scan >> insert->insert_position) << \ (8 + insert->insert_position); 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; } static void vsllink_end_state(tap_state_t state) { if (tap_is_state_stable(state)) { tap_set_end_state(state); } else { LOG_ERROR("BUG: %i is not a valid end state", state); exit(-1); } } /* Goes to the end state. */ static void vsllink_state_move_normal(void) { if (vsllink_tms_data_len > 0) { vsllink_append_tms(); } 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_get_state(), tap_get_end_state()); } tap_set_state(tap_get_end_state()); } static void vsllink_state_move_dma(void) { int i, insert_length = (tap_length % 8) ? (8 - (tap_length % 8)) : 0; struct insert_insignificant_operation *insert = \ &VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_ndx(tap_get_state())][tap_move_ndx(tap_get_end_state())]; uint8_t tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state()); if (tap_get_state() == TAP_RESET) { vsllink_tap_ensure_space(0, 8); for (i = 0; i < 8; i++) { vsllink_tap_append_step(1, 0); } } if (insert_length > 0) { vsllink_tap_ensure_space(0, 16); for (i = 0; i < insert->insert_position; i++) { vsllink_tap_append_step((tms_scan >> i) & 1, 0); } for (i = 0; i < insert_length; i++) { vsllink_tap_append_step(insert->insert_value, 0); } for (i = insert->insert_position; i < 8; i++) { vsllink_tap_append_step((tms_scan >> i) & 1, 0); } } else { vsllink_tap_ensure_space(0, 8); for (i = 0; i < 8; i++) { vsllink_tap_append_step((tms_scan >> i) & 1, 0); } } tap_set_state(tap_get_end_state()); } // write tms from current vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] static void vsllink_add_path(int start, int num, tap_state_t *path) { int i; for (i = start; i < (start + num); i++) { if ((i & 7) == 0) { if (i > 0) { vsllink_usb_out_buffer_idx++; } vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0; } if (path[i - start] == tap_state_transition(tap_get_state(), true)) { vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= 1 << (i & 7); } else if (path[i - start] == tap_state_transition(tap_get_state(), false)) { // nothing to do } else { LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i])); exit(-1); } tap_set_state(path[i - start]); } if ((i > 0) && ((i & 7) == 0)) { vsllink_usb_out_buffer_idx++; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0; } tap_set_end_state(tap_get_state()); } static void vsllink_path_move_normal(int num_states, tap_state_t *path) { int i, tms_len, tms_cmd_pos, path_idx = 0; if (vsllink_tms_data_len > 0) { // there are vsllink_tms_data_len more tms bits to be shifted // so there are vsllink_tms_data_len + num_states tms bits in all tms_len = vsllink_tms_data_len + num_states; if (tms_len <= 16) { // merge into last tms shift if (tms_len < 8) { // just append tms data to the last tms byte vsllink_add_path(vsllink_tms_data_len, num_states, path); } else if (tms_len == 8) { // end last tms shift command (*vsllink_tms_cmd_pos)--; vsllink_add_path(vsllink_tms_data_len, num_states, path); } else if (tms_len < 16) { if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK) { // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most // there is enought tms length in the current tms shift command (*vsllink_tms_cmd_pos)++; vsllink_add_path(vsllink_tms_data_len, num_states, path); } else { // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most // not enough tms length in the current tms shift command // so a new command should be added // first decrease byte length of last tms shift command (*vsllink_tms_cmd_pos)--; // append tms data to the last tms byte vsllink_add_path(vsllink_tms_data_len, 8 - vsllink_tms_data_len, path); path += 8 - vsllink_tms_data_len; // add new command(3 bytes) vsllink_tap_ensure_space(0, 3); vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; vsllink_add_path(0, num_states - (8 - vsllink_tms_data_len), path); } } else if (tms_len == 16) { // end last tms shift command vsllink_add_path(vsllink_tms_data_len, num_states, path); } vsllink_tms_data_len = (vsllink_tms_data_len + num_states) & 7; if (vsllink_tms_data_len == 0) { vsllink_tms_cmd_pos = NULL; } num_states = 0; } else { vsllink_add_path(vsllink_tms_data_len, 16 - vsllink_tms_data_len, path); path += 16 - vsllink_tms_data_len; num_states -= 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_tms_cmd_pos = &vsllink_usb_out_buffer[tms_cmd_pos]; (*vsllink_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_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = tms_len; } } } } static void vsllink_path_move_dma(int num_states, tap_state_t *path) { int i, j = 0; if (tap_length & 7) { if ((8 - (tap_length & 7)) < num_states) { j = 8 - (tap_length & 7); } else { j = num_states; } for (i = 0; i < j; i++) { if (path[i] == tap_state_transition(tap_get_state(), false)) { vsllink_tap_append_step(0, 0); } else if (path[i] == tap_state_transition(tap_get_state(), true)) { vsllink_tap_append_step(1, 0); } else { LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i])); exit(-1); } tap_set_state(path[i]); } num_states -= j; } if (num_states > 0) { vsllink_tap_ensure_space(0, num_states); for (i = 0; i < num_states; i++) { if (path[j + i] == tap_state_transition(tap_get_state(), false)) { vsllink_tap_append_step(0, 0); } else if (path[j + i] == tap_state_transition(tap_get_state(), true)) { vsllink_tap_append_step(1, 0); } else { LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(tap_get_state()), tap_state_name(path[i])); exit(-1); } tap_set_state(path[j + i]); } } tap_set_end_state(tap_get_state()); } static void vsllink_stableclocks_normal(int num_cycles, int tms) { int tms_len; uint16_t tms_append_byte; if (vsllink_tms_data_len > 0) { // there are vsllink_tms_data_len more tms bits to be shifted // so there are vsllink_tms_data_len + num_cycles tms bits in all tms_len = vsllink_tms_data_len + num_cycles; if (tms > 0) { // append '1' for tms tms_append_byte = (uint16_t)((((1 << num_cycles) - 1) << vsllink_tms_data_len) & 0xFFFF); } else { // append '0' for tms tms_append_byte = 0; } if (tms_len <= 16) { // merge into last tms shift if (tms_len < 8) { // just add to vsllink_tms_data_len // same result if tun through //vsllink_tms_data_len += num_cycles; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] |= (uint8_t)(tms_append_byte & 0xFF); } else if (tms_len == 8) { // end last tms shift command // just reduce it, and append last tms byte (*vsllink_tms_cmd_pos)--; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF); } else if (tms_len < 16) { if ((*vsllink_tms_cmd_pos & VSLLINK_CMDJTAGSEQ_LENMSK) < VSLLINK_CMDJTAGSEQ_LENMSK) { // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most // there is enought tms length in the current tms shift command // increase the tms byte length by 1 and set the last byte to 0 (*vsllink_tms_cmd_pos)++; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF); vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (uint8_t)(tms_append_byte >> 8); } else { // every tms shift command can contain VSLLINK_CMDJTAGSEQ_LENMSK + 1 bytes in most // not enough tms length in the current tms shift command // so a new command should be added // first decrease byte length of last tms shift command (*vsllink_tms_cmd_pos)--; // append last tms byte and move the command pointer to the next empty position vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF); // add new command(3 bytes) vsllink_tap_ensure_space(0, 3); vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (uint8_t)(tms_append_byte >> 8); } } else if (tms_len == 16) { // end last tms shift command vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF); vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (uint8_t)(tms_append_byte >> 8); } vsllink_tms_data_len = tms_len & 7; if (vsllink_tms_data_len == 0) { vsllink_tms_cmd_pos = NULL; } num_cycles = 0; } else { // more shifts will be needed vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= (uint8_t)(tms_append_byte & 0xFF); vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (uint8_t)(tms_append_byte >> 8); num_cycles -= 16 - vsllink_tms_data_len; vsllink_tms_data_len = 0; vsllink_tms_cmd_pos = NULL; } } // from here vsllink_tms_data_len == 0 or num_cycles == 0 if (vsllink_tms_data_len > 0) { // num_cycles == 0 // no need to shift if (num_cycles > 0) { LOG_ERROR("There MUST be some bugs in the driver"); exit(-1); } } else { // get number of bytes left to be sent tms_len = num_cycles >> 3; if (tms_len > 0) { vsllink_tap_ensure_space(1, 5); // if tms_len > 0, vsllink_tms_data_len == 0 // so just add new command // LSB of the command byte is the tms value when do the shifting if (tms > 0) { vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK | 1; } else { vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSCLOCK; } vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 0) & 0xff; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 8) & 0xff; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 16) & 0xff; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = (tms_len >> 24) & 0xff; vsllink_usb_in_want_length += 1; pending_scan_results_buffer[pending_scan_results_length].buffer = NULL; pending_scan_results_length++; if (tms_len > 0xFFFF) { vsllink_tap_execute(); } } // post-process vsllink_tms_data_len = num_cycles & 7; if (vsllink_tms_data_len > 0) { vsllink_tap_ensure_space(0, 3); vsllink_tms_cmd_pos = &vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMSBYTE | 1; if (tms > 0) { // append '1' for tms vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = (1 << vsllink_tms_data_len) - 1; } else { // append '0' for tms vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0x00; } } } } static void vsllink_stableclocks_dma(int num_cycles, int tms) { int i, cur_cycles; if (tap_length & 7) { if ((8 - (tap_length & 7)) < num_cycles) { cur_cycles = 8 - (tap_length & 7); } else { cur_cycles = num_cycles; } for (i = 0; i < cur_cycles; i++) { vsllink_tap_append_step(tms, 0); } num_cycles -= cur_cycles; } while (num_cycles > 0) { if (num_cycles > 8 * tap_buffer_size) { cur_cycles = 8 * tap_buffer_size; } else { cur_cycles = num_cycles; } vsllink_tap_ensure_space(0, cur_cycles); for (i = 0; i < cur_cycles; i++) { vsllink_tap_append_step(tms, 0); } num_cycles -= cur_cycles; } } static void vsllink_runtest(int num_cycles) { tap_state_t saved_end_state = tap_get_end_state(); if (tap_get_state() != TAP_IDLE) { // enter into IDLE state vsllink_end_state(TAP_IDLE); vsllink_state_move(); } vsllink_stableclocks(num_cycles, 0); // post-process // set end_state vsllink_end_state(saved_end_state); tap_set_state(TAP_IDLE); if (tap_get_end_state() != TAP_IDLE) { vsllink_state_move(); } } static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command) { tap_state_t saved_end_state; uint8_t bits_left, tms_tmp, tdi_len; int i; if (0 == scan_size) { return; } 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 = tap_get_end_state(); /* Move to appropriate scan state */ vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT); if (vsllink_tms_data_len > 0) { if (tap_get_state() == tap_get_end_state()) { // already in IRSHIFT or DRSHIFT state // merge tms data in the last tms shift command into next scan command if (*vsllink_tms_cmd_pos < 1) { LOG_ERROR("There MUST be some bugs in the driver"); exit(-1); } else if (*vsllink_tms_cmd_pos < 2) { tms_tmp = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; vsllink_usb_out_buffer_idx--; } else { tms_tmp = vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx]; *vsllink_tms_cmd_pos -= 2; } vsllink_tap_ensure_space(1, tdi_len + 7); // VSLLINK_CMDJTAGSEQ_SCAN ored by 1 means that tms_before is valid // which is merged from the last tms shift command 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_normal(scan_size - vsllink_tms_data_len, buffer, command, vsllink_tms_data_len); scan_size -= 8 - vsllink_tms_data_len; vsllink_tms_data_len = 0; } else { vsllink_state_move(); 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_normal(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(tap_get_state(), tap_get_end_state()); vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0; vsllink_tap_append_scan_normal(scan_size, buffer, command, 8); } vsllink_end_state(saved_end_state); bits_left = scan_size & 0x07; tap_set_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 (tap_get_state() != tap_get_end_state()) { vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state()); } else { vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0; } tap_set_state(tap_get_end_state()); } static void vsllink_scan_dma(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command) { tap_state_t saved_end_state; saved_end_state = tap_get_end_state(); /* Move to appropriate scan state */ vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT); vsllink_state_move(); vsllink_end_state(saved_end_state); /* Scan */ vsllink_tap_append_scan_dma(scan_size, buffer, command); tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE); while (tap_length % 8 != 0) { // more 0s in Pause vsllink_tap_append_step(0, 0); } if (tap_get_state() != tap_get_end_state()) { vsllink_state_move(); } } static 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_handle, 3); if (result != 3) { LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result); } } static void vsllink_simple_command(uint8_t command) { int result; DEBUG_JTAG_IO("0x%02x", command); vsllink_usb_out_buffer[0] = command; result = vsllink_usb_write(vsllink_handle, 1); if (result != 1) { LOG_ERROR("VSLLink command 0x%02x failed (%d)", command, result); } } COMMAND_HANDLER(vsllink_handle_mode_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for VID"); return ERROR_FAIL; } if (!strcmp(args[0], "normal")) { vsllink_mode = VSLLINK_MODE_NORMAL; } else if (!strcmp(args[0], "dma")) { vsllink_mode = VSLLINK_MODE_DMA; } else { LOG_ERROR("invalid vsllink_mode: %s", args[0]); return ERROR_FAIL; } return ERROR_OK; } COMMAND_HANDLER(vsllink_handle_usb_vid_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for VID"); return ERROR_OK; } COMMAND_PARSE_NUMBER(u16, args[0], vsllink_usb_vid); return ERROR_OK; } COMMAND_HANDLER(vsllink_handle_usb_pid_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for PID"); return ERROR_OK; } COMMAND_PARSE_NUMBER(u16, args[0], vsllink_usb_pid); return ERROR_OK; } COMMAND_HANDLER(vsllink_handle_usb_bulkin_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint"); return ERROR_OK; } COMMAND_PARSE_NUMBER(u8, args[0], vsllink_usb_bulkin); vsllink_usb_bulkin |= 0x80; return ERROR_OK; } COMMAND_HANDLER(vsllink_handle_usb_bulkout_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint"); return ERROR_OK; } COMMAND_PARSE_NUMBER(u8, args[0], vsllink_usb_bulkout); vsllink_usb_bulkout &= ~0x80; return ERROR_OK; } COMMAND_HANDLER(vsllink_handle_usb_interface_command) { if (argc != 1) { LOG_ERROR("parameter error, should be one parameter for interface number"); return ERROR_OK; } COMMAND_PARSE_NUMBER(u8, args[0], vsllink_usb_interface); return ERROR_OK; } /***************************************************************************/ /* VSLLink tap functions */ static void vsllink_tap_init_normal(void) { vsllink_usb_out_buffer_idx = 0; vsllink_usb_in_want_length = 0; pending_scan_results_length = 0; } static void vsllink_tap_init_dma(void) { tap_length = 0; pending_scan_results_length = 0; } static void vsllink_tap_ensure_space_normal(int scans, int length) { 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 || length > available_bytes) { vsllink_tap_execute(); } } static void vsllink_tap_ensure_space_dma(int scans, int length) { int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length; int available_bytes = tap_buffer_size * 8 - tap_length; if (scans > available_scans || length > available_bytes) { vsllink_tap_execute(); } } static void vsllink_tap_append_step(int tms, int tdi) { last_tms = tms; int index = tap_length / 8; if (index < tap_buffer_size) { int bit_index = tap_length % 8; uint8_t bit = 1 << bit_index; if (tms) { tms_buffer[index] |= bit; } else { tms_buffer[index] &= ~bit; } if (tdi) { tdi_buffer[index] |= bit; } else { tdi_buffer[index] &= ~bit; } tap_length++; } else { LOG_ERROR("buffer overflow, tap_length=%d", tap_length); } } static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, struct scan_command *command, int offset) { struct pending_scan_result *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++; } static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, struct scan_command *command) { struct pending_scan_result *pending_scan_result; int len_tmp, len_all, i; len_all = 0; while (len_all < length) { if ((length - len_all) > tap_buffer_size * 8) { len_tmp = tap_buffer_size * 8; } else { len_tmp = length - len_all; } vsllink_tap_ensure_space(1, (len_tmp + 7) & ~7); pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length]; pending_scan_result->offset = tap_length; pending_scan_result->length = len_tmp; pending_scan_result->command = command; pending_scan_result->buffer = buffer + len_all / 8; for (i = 0; i < len_tmp; i++) { vsllink_tap_append_step(((len_all + i) < length-1 ? 0 : 1), (buffer[(len_all + i)/8] >> ((len_all + i)%8)) & 1); } pending_scan_results_length++; len_all += len_tmp; } } /* Pad and send a tap sequence to the device, and receive the answer. * For the purpose of padding we assume that we are in reset or idle or pause state. */ static int vsllink_tap_execute_normal(void) { int i; int result; int first = 0; if (vsllink_tms_data_len > 0) { if ((tap_get_state() != TAP_RESET) && (tap_get_state() != TAP_IDLE) && (tap_get_state() != TAP_IRPAUSE) && (tap_get_state() != TAP_DRPAUSE)) { LOG_WARNING("%s is not in RESET or IDLE or PAUSR state", tap_state_name(tap_get_state())); } if (vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] & (1 << (vsllink_tms_data_len - 1))) { // last tms bit is '1' vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] |= 0xFF << vsllink_tms_data_len; vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0xFF; vsllink_tms_data_len = 0; } 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_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++) { struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i]; uint8_t *buffer = pending_scan_result->buffer; int length = pending_scan_result->length; int offset = pending_scan_result->offset; struct scan_command *command = pending_scan_result->command; if (buffer != NULL) { // IRSHIFT or DRSHIFT 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; } free(pending_scan_result->buffer); pending_scan_result->buffer = NULL; } else { first++; } } } 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(); } reset_command_pointer(); return ERROR_OK; } static int vsllink_tap_execute_dma(void) { int byte_length; int i; int result; if (tap_length > 0) { /* Pad last byte so that tap_length is divisible by 8 */ while (tap_length % 8 != 0) { /* More of the last TMS value keeps us in the same state, * analogous to free-running JTAG interfaces. */ vsllink_tap_append_step(last_tms, 0); } byte_length = tap_length / 8; vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGRAWCMD; vsllink_usb_out_buffer[1] = ((byte_length * 2 + 3) >> 0) & 0xff; // package size vsllink_usb_out_buffer[2] = ((byte_length * 2 + 3) >> 8) & 0xff; memcpy(&vsllink_usb_out_buffer[3], tdi_buffer, byte_length); memcpy(&vsllink_usb_out_buffer[3 + byte_length], tms_buffer, byte_length); result = vsllink_usb_message(vsllink_handle, 3 + 2 * byte_length, byte_length); if (result == byte_length) { for (i = 0; i < pending_scan_results_length; i++) { struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i]; uint8_t *buffer = pending_scan_result->buffer; int length = pending_scan_result->length; int first = pending_scan_result->offset; struct scan_command *command = pending_scan_result->command; buf_set_buf(vsllink_usb_in_buffer, first, buffer, 0, length); DEBUG_JTAG_IO("JTAG scan read(%d bits, from %d bits):", length, first); #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); } } } else { LOG_ERROR("vsllink_tap_execute, wrong result %d, expected %d", result, byte_length); return ERROR_JTAG_QUEUE_FAILED; } vsllink_tap_init(); } return ERROR_OK; } /*****************************************************************************/ /* VSLLink USB low-level functions */ static struct vsllink* vsllink_usb_open(void) { struct usb_bus *busses; struct usb_bus *bus; struct usb_device *dev; int ret; struct vsllink *result; result = (struct vsllink*) malloc(sizeof(struct vsllink)); usb_init(); usb_find_busses(); usb_find_devices(); busses = usb_get_busses(); /* find vsllink device in usb bus */ for (bus = busses; bus; bus = bus->next) { for (dev = bus->devices; dev; dev = dev->next) { if ((dev->descriptor.idVendor == vsllink_usb_vid) && (dev->descriptor.idProduct == vsllink_usb_pid)) { result->usb_handle = usb_open(dev); if (NULL == result->usb_handle) { LOG_ERROR("failed to open %04X:%04X, not enough permissions?", vsllink_usb_vid, vsllink_usb_pid); exit(-1); } /* usb_set_configuration required under win32 */ ret = usb_set_configuration(result->usb_handle, dev->config[0].bConfigurationValue); if (ret != 0) { LOG_ERROR("fail to set configuration to %d, %d returned, not enough permissions?", dev->config[0].bConfigurationValue, ret); exit(-1); } ret = usb_claim_interface(result->usb_handle, vsllink_usb_interface); if (ret != 0) { LOG_ERROR("fail to claim interface %d, %d returned", vsllink_usb_interface, ret); exit(-1); } #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; } static void vsllink_usb_close(struct vsllink *vsllink) { int ret; ret = usb_release_interface(vsllink->usb_handle, vsllink_usb_interface); if (ret != 0) { LOG_ERROR("fail to release interface %d, %d returned", vsllink_usb_interface, ret); exit(-1); } ret = usb_close(vsllink->usb_handle); if (ret != 0) { LOG_ERROR("fail to close usb, %d returned", ret); exit(-1); } free(vsllink); } /* Send a message and receive the reply. */ static int vsllink_usb_message(struct vsllink *vsllink, int out_length, int in_length) { int result; result = vsllink_usb_write(vsllink, out_length); if (result == out_length) { if (in_length > 0) { result = vsllink_usb_read(vsllink); 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. */ static int vsllink_usb_write(struct vsllink *vsllink, int out_length) { int result; if (out_length > VSLLINK_BufferSize) { LOG_ERROR("vsllink_write illegal out_length=%d (max=%d)", out_length, VSLLINK_BufferSize); return -1; } result = usb_bulk_write(vsllink->usb_handle, vsllink_usb_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. */ static int vsllink_usb_read(struct vsllink *vsllink) { int result = usb_bulk_read(vsllink->usb_handle, vsllink_usb_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 #if defined _DEBUG_USB_COMMS_ || defined _DEBUG_JTAG_IO_ static void vsllink_debug_buffer(uint8_t *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("%s", line); } } #endif // _DEBUG_USB_COMMS_ || _DEBUG_JTAG_IO_ static 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); register_command(cmd_ctx, NULL, "vsllink_usb_interface", vsllink_handle_usb_interface_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "vsllink_mode", vsllink_handle_mode_command, COMMAND_CONFIG, NULL); return ERROR_OK; } struct jtag_interface vsllink_interface = { .name = "vsllink", .register_commands = &vsllink_register_commands, .init = &vsllink_init, .quit = &vsllink_quit, .khz = &vsllink_khz, .speed = &vsllink_speed, .speed_div = &vsllink_speed_div, .execute_queue = &vsllink_execute_queue, }; '#n1392'>1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 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