--- /dev/null
+/***************************************************************************
+ * 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();
+int vsllink_tap_execute();
+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, j;
+ int tms_len, first_tms = 0, tms_cmd_pos;
+ 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)");
+ }
+}
+
+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];
+
+static int last_tms;
+
+void vsllink_tap_init()
+{
+ 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()
+{
+ int i, j;
+ 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()
+{
+ 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;
+ int result2;
+
+ 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);
+ }
+}
projects / openocd / commitdiff