use COMMAND_REGISTER macro
[fw/openocd] / src / jtag / vsllink.c
index 56f92abe9ffa329c8fc3839d336399009c0dc943..3526198e0bf7f8061b700e24f9ec7e9908402055 100644 (file)
@@ -28,9 +28,7 @@
 
 #include "interface.h"
 #include "commands.h"
-
-#include <usb.h>
-
+#include "usb_common.h"
 
 //#define _VSLLINK_IN_DEBUG_MODE_
 
@@ -105,13 +103,12 @@ static uint8_t VSLLINK_tap_move[6][6] =
        {0xfe, 0x60, 0x38, 0x5c, 0x40, 0x5e}    /* PI  */
 };
 
-typedef struct insert_insignificant_operation
-{
+struct insert_insignificant_operation {
        unsigned char insert_value;
        unsigned char insert_position;
-}insert_insignificant_operation_t;
+};
 
-static insert_insignificant_operation_t VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[6][6] =
+static struct insert_insignificant_operation VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[6][6] =
 {
 /*      stuff  offset   */
        {/*     TLR     */
@@ -163,35 +160,17 @@ static uint8_t VSLLINK_BIT_MSK[8] =
        0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
 };
 
-typedef struct
-{
+struct pending_scan_result {
        int offset;
        int length; /* Number of bits to read */
-       scan_command_t *command; /* Corresponding scan command */
+       struct scan_command *command; /* Corresponding scan command */
        uint8_t *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];
-
-/* External interface functions */
-static int vsllink_execute_queue(void);
-static int vsllink_speed(int speed);
-static int vsllink_khz(int khz, int *jtag_speed);
-static int vsllink_speed_div(int jtag_speed, int *khz);
-static int vsllink_register_commands(struct command_context_s *cmd_ctx);
-static int vsllink_init(void);
-static int vsllink_quit(void);
-
-/* CLI command handler functions */
-static int vsllink_handle_usb_vid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int vsllink_handle_usb_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int vsllink_handle_usb_bulkin_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int vsllink_handle_usb_bulkout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int vsllink_handle_usb_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-static int vsllink_handle_mode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+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);
@@ -205,9 +184,9 @@ 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, scan_command_t *command);
-static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, scan_command_t *command);
-static void (*vsllink_scan)(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, scan_command_t *command);
+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);
@@ -224,20 +203,19 @@ 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, scan_command_t *command);
-static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, scan_command_t *command, int offset);
+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 */
-typedef struct vsllink_jtag
-{
+struct vsllink {
        struct usb_dev_handle* usb_handle;
-} vsllink_jtag_t;
+};
 
-static vsllink_jtag_t *vsllink_usb_open(void);
-static void vsllink_usb_close(vsllink_jtag_t *vsllink_jtag);
-static int vsllink_usb_message(vsllink_jtag_t *vsllink_jtag, int out_length, int in_length);
-static int vsllink_usb_write(vsllink_jtag_t *vsllink_jtag, int out_length);
-static int vsllink_usb_read(vsllink_jtag_t *vsllink_jtag);
+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);
@@ -253,22 +231,7 @@ static uint8_t *tdi_buffer = NULL;
 static uint8_t *tdo_buffer = NULL;
 static int last_tms;
 
-static vsllink_jtag_t* vsllink_jtag_handle = NULL;
-
-/***************************************************************************/
-/* 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
-};
+static struct vsllink* vsllink_handle = NULL;
 
 static void reset_command_pointer(void)
 {
@@ -285,7 +248,7 @@ static void reset_command_pointer(void)
 
 static int vsllink_execute_queue(void)
 {
-       jtag_command_t *cmd = jtag_command_queue;
+       struct jtag_command *cmd = jtag_command_queue;
        int scan_size;
        enum scan_type type;
        uint8_t *buffer;
@@ -378,7 +341,7 @@ static int vsllink_execute_queue(void)
                                        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()) );
+                                                        tap_state_name(tap_get_state()));
                                         exit(-1);
                                }
                                vsllink_stableclocks(cmd->cmd.stableclocks->num_cycles, scan_size);
@@ -402,7 +365,7 @@ static int vsllink_speed(int 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);
+       result = vsllink_usb_write(vsllink_handle, 3);
 
        if (result == 3)
        {
@@ -445,9 +408,9 @@ static int vsllink_init(void)
                exit(-1);
        }
 
-       vsllink_jtag_handle = vsllink_usb_open();
+       vsllink_handle = vsllink_usb_open();
 
-       if (vsllink_jtag_handle == 0)
+       if (vsllink_handle == 0)
        {
                LOG_ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
                return ERROR_JTAG_INIT_FAILED;
@@ -460,7 +423,7 @@ static int vsllink_init(void)
        while (check_cnt < 5)
        {
                vsllink_simple_command(0x00);
-               result = vsllink_usb_read(vsllink_jtag_handle);
+               result = vsllink_usb_read(vsllink_handle);
 
                if (result > 2)
                {
@@ -549,7 +512,7 @@ static int vsllink_init(void)
        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_jtag_handle, 3) != 3)
+       if (vsllink_usb_write(vsllink_handle, 3) != 3)
        {
                LOG_ERROR("VSLLink USB send data error");
                exit(-1);
@@ -572,7 +535,7 @@ static int vsllink_quit(void)
                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_jtag_handle, 3) != 3)
+               if (vsllink_usb_write(vsllink_handle, 3) != 3)
                {
                        LOG_ERROR("VSLLink USB send data error");
                        exit(-1);
@@ -580,8 +543,8 @@ static int vsllink_quit(void)
 
                // disconnect
                vsllink_disconnect();
-               vsllink_usb_close(vsllink_jtag_handle);
-               vsllink_jtag_handle = NULL;
+               vsllink_usb_close(vsllink_handle);
+               vsllink_handle = NULL;
        }
 
        if (vsllink_usb_in_buffer != NULL)
@@ -612,8 +575,8 @@ static int vsllink_connect(void)
 
        vsllink_usb_out_buffer[0] = VSLLINK_CMD_CONN;
        vsllink_usb_out_buffer[1] = vsllink_mode;
-       vsllink_usb_message(vsllink_jtag_handle, 2, 0);
-       if (vsllink_usb_read(vsllink_jtag_handle) > 2)
+       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);
@@ -628,7 +591,7 @@ static void vsllink_append_tms(void)
 {
        uint8_t tms_scan = VSLLINK_TAP_MOVE(tap_get_state(), tap_get_end_state());
        uint16_t tms2;
-       insert_insignificant_operation_t *insert = \
+       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)) || \
@@ -689,7 +652,7 @@ static void vsllink_state_move_normal(void)
 static void vsllink_state_move_dma(void)
 {
        int i, insert_length = (tap_length % 8) ? (8 - (tap_length % 8)) : 0;
-       insert_insignificant_operation_t *insert = \
+       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());
 
@@ -1172,13 +1135,13 @@ static void vsllink_runtest(int num_cycles)
        }
 }
 
-static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, scan_command_t *command)
+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 )
+       if (0 == scan_size)
        {
                return;
        }
@@ -1288,7 +1251,7 @@ static void vsllink_scan_normal(bool ir_scan, enum scan_type type, uint8_t *buff
 
        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, scan_command_t *command)
+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;
 
@@ -1335,7 +1298,7 @@ static void vsllink_reset(int trst, int srst)
                vsllink_usb_out_buffer[2] |= JTAG_PINMSK_TRST;
        }
 
-       result = vsllink_usb_write(vsllink_jtag_handle, 3);
+       result = vsllink_usb_write(vsllink_handle, 3);
        if (result != 3)
        {
                LOG_ERROR("VSLLink command VSLLINK_CMD_SET_PORT failed (%d)", result);
@@ -1349,7 +1312,7 @@ static void vsllink_simple_command(uint8_t command)
        DEBUG_JTAG_IO("0x%02x", command);
 
        vsllink_usb_out_buffer[0] = command;
-       result = vsllink_usb_write(vsllink_jtag_handle, 1);
+       result = vsllink_usb_write(vsllink_handle, 1);
 
        if (result != 1)
        {
@@ -1357,108 +1320,93 @@ static void vsllink_simple_command(uint8_t command)
        }
 }
 
-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;
-}
-
-static int vsllink_handle_mode_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_mode_command)
 {
-       if (argc != 1) {
+       if (CMD_ARGC != 1) {
                LOG_ERROR("parameter error, should be one parameter for VID");
                return ERROR_FAIL;
        }
 
-       if (!strcmp(args[0], "normal"))
+       if (!strcmp(CMD_ARGV[0], "normal"))
        {
                vsllink_mode = VSLLINK_MODE_NORMAL;
        }
-       else if (!strcmp(args[0], "dma"))
+       else if (!strcmp(CMD_ARGV[0], "dma"))
        {
                vsllink_mode = VSLLINK_MODE_DMA;
        }
        else
        {
-               LOG_ERROR("invalid vsllink_mode: %s", args[0]);
+               LOG_ERROR("invalid vsllink_mode: %s", CMD_ARGV[0]);
                return ERROR_FAIL;
        }
 
        return ERROR_OK;
 }
 
-static int vsllink_handle_usb_vid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_usb_vid_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
        {
                LOG_ERROR("parameter error, should be one parameter for VID");
                return ERROR_OK;
        }
 
-       return parse_u16(args[0], &vsllink_usb_vid);
+       COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], vsllink_usb_vid);
+       return ERROR_OK;
 }
 
-static int vsllink_handle_usb_pid_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_usb_pid_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
        {
                LOG_ERROR("parameter error, should be one parameter for PID");
                return ERROR_OK;
        }
-       return parse_u16(args[0], &vsllink_usb_pid);
+       COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0], vsllink_usb_pid);
+       return ERROR_OK;
 }
 
-static int vsllink_handle_usb_bulkin_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_usb_bulkin_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
        {
                LOG_ERROR("parameter error, should be one parameter for BULKIN endpoint");
                return ERROR_OK;
        }
 
-       int retval = parse_u8(args[0], &vsllink_usb_bulkin);
-       if (ERROR_OK == retval)
-               vsllink_usb_bulkin |= 0x80;
+       COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_bulkin);
+
+       vsllink_usb_bulkin |= 0x80;
 
-       return retval;
+       return ERROR_OK;
 }
 
-static int vsllink_handle_usb_bulkout_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_usb_bulkout_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
        {
                LOG_ERROR("parameter error, should be one parameter for BULKOUT endpoint");
                return ERROR_OK;
        }
 
-       int retval = parse_u8(args[0], &vsllink_usb_bulkout);
-       if (ERROR_OK == retval)
-               vsllink_usb_bulkout &= ~0x80;
+       COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_bulkout);
+
+       vsllink_usb_bulkout &= ~0x80;
 
-       return retval;
+       return ERROR_OK;
 }
 
-static int vsllink_handle_usb_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(vsllink_handle_usb_interface_command)
 {
-       if (argc != 1)
+       if (CMD_ARGC != 1)
        {
                LOG_ERROR("parameter error, should be one parameter for interface number");
                return ERROR_OK;
        }
 
-       return parse_u8(args[0], &vsllink_usb_interface);
+       COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0], vsllink_usb_interface);
+       return ERROR_OK;
 }
 
 /***************************************************************************/
@@ -1533,9 +1481,9 @@ static void vsllink_tap_append_step(int tms, int tdi)
        }
 }
 
-static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, scan_command_t *command, int offset)
+static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, struct scan_command *command, int offset)
 {
-       pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
+       struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
        int i;
 
        if (offset > 0)
@@ -1558,9 +1506,9 @@ static void vsllink_tap_append_scan_normal(int length, uint8_t *buffer, scan_com
 
        pending_scan_results_length++;
 }
-static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, scan_command_t *command)
+static void vsllink_tap_append_scan_dma(int length, uint8_t *buffer, struct scan_command *command)
 {
-       pending_scan_result_t *pending_scan_result;
+       struct pending_scan_result *pending_scan_result;
        int len_tmp, len_all, i;
 
        len_all = 0;
@@ -1632,17 +1580,17 @@ static int vsllink_tap_execute_normal(void)
                        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);
+               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++)
                        {
-                               pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[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;
-                               scan_command_t *command = pending_scan_result->command;
+                               struct scan_command *command = pending_scan_result->command;
 
                                if (buffer != NULL)
                                {
@@ -1706,17 +1654,17 @@ static int vsllink_tap_execute_dma(void)
                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_jtag_handle, 3 + 2 * byte_length, 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++)
                        {
-                               pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[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;
 
-                               scan_command_t *command = pending_scan_result->command;
+                               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);
@@ -1751,101 +1699,79 @@ static int vsllink_tap_execute_dma(void)
 /*****************************************************************************/
 /* VSLLink USB low-level functions */
 
-static vsllink_jtag_t* vsllink_usb_open(void)
+static struct vsllink* vsllink_usb_open(void)
 {
-       struct usb_bus *busses;
-       struct usb_bus *bus;
-       struct usb_device *dev;
-       int ret;
-
-       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 */
+       const uint16_t vids[] = { vsllink_usb_vid, 0 };
+       const uint16_t pids[] = { vsllink_usb_pid, 0 };
+       struct usb_dev_handle *dev;
+       if (jtag_usb_open(vids, pids, &dev) != ERROR_OK)
+               return NULL;
 
-       for (bus = busses; bus; bus = bus->next)
+       /* usb_set_configuration required under win32 */
+       struct usb_device *udev = usb_device(dev);
+       int ret = usb_set_configuration(dev, udev->config[0].bConfigurationValue);
+       if (ret != 0)
        {
-               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);
-                               }
-
+               LOG_ERROR("fail to set configuration to %d (error %d)."
+                               "Not enough permissions for the device?",
+                               udev->config[0].bConfigurationValue, ret);
+               return NULL;
+       }
+       ret = usb_claim_interface(dev, vsllink_usb_interface);
+       if (ret != 0)
+       {
+               LOG_ERROR("fail to claim interface %d, %d returned",
+                               vsllink_usb_interface, ret);
+               return NULL;
+       }
 #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);
+       /*
+       * This makes problems under Mac OS X. And is not needed
+       * under Windows. Hopefully this will not break a linux build
+       */
+       usb_set_altinterface(dev, 0);
 #endif
-                               return result;
-                       }
-               }
-       }
 
-       free(result);
-       return NULL;
+       struct vsllink *result = malloc(sizeof(struct vsllink));
+       result->usb_handle = dev;
+       return result;
 }
 
-static void vsllink_usb_close(vsllink_jtag_t *vsllink_jtag)
+static void vsllink_usb_close(struct vsllink *vsllink)
 {
        int ret;
 
-       ret = usb_release_interface(vsllink_jtag->usb_handle, vsllink_usb_interface);
+       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_jtag->usb_handle);
+       ret = usb_close(vsllink->usb_handle);
        if (ret != 0)
        {
                LOG_ERROR("fail to close usb, %d returned", ret);
                exit(-1);
        }
 
-       free(vsllink_jtag);
+       free(vsllink);
 }
 
 /* Send a message and receive the reply. */
-static int vsllink_usb_message(vsllink_jtag_t *vsllink_jtag, int out_length, int in_length)
+static int vsllink_usb_message(struct vsllink *vsllink, int out_length, int in_length)
 {
        int result;
 
-       result = vsllink_usb_write(vsllink_jtag, out_length);
+       result = vsllink_usb_write(vsllink, out_length);
        if (result == out_length)
        {
                if (in_length > 0)
                {
-                       result = vsllink_usb_read(vsllink_jtag);
-                       if (result == in_length )
+                       result = vsllink_usb_read(vsllink);
+                       if (result == in_length)
                        {
                                return result;
                        }
@@ -1865,17 +1791,17 @@ static int vsllink_usb_message(vsllink_jtag_t *vsllink_jtag, int out_length, int
 }
 
 /* Write data from out_buffer to USB. */
-static int vsllink_usb_write(vsllink_jtag_t *vsllink_jtag, int out_length)
+static int vsllink_usb_write(struct vsllink *vsllink, 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);
+               LOG_ERROR("vsllink_write illegal out_length=%d (max=%d)", out_length, VSLLINK_BufferSize);
                return -1;
        }
 
-       result = usb_bulk_write(vsllink_jtag->usb_handle, vsllink_usb_bulkout, \
+       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);
@@ -1893,9 +1819,9 @@ static int vsllink_usb_write(vsllink_jtag_t *vsllink_jtag, int out_length)
 }
 
 /* Read data from USB into in_buffer. */
-static int vsllink_usb_read(vsllink_jtag_t *vsllink_jtag)
+static int vsllink_usb_read(struct vsllink *vsllink)
 {
-       int result = usb_bulk_read(vsllink_jtag->usb_handle, vsllink_usb_bulkin, \
+       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);
@@ -1929,3 +1855,38 @@ static void vsllink_debug_buffer(uint8_t *buffer, int length)
        }
 }
 #endif // _DEBUG_USB_COMMS_ || _DEBUG_JTAG_IO_
+
+static int vsllink_register_commands(struct command_context *cmd_ctx)
+{
+       COMMAND_REGISTER(cmd_ctx, NULL, "vsllink_usb_vid",
+                       vsllink_handle_usb_vid_command, COMMAND_CONFIG,
+                       NULL);
+       COMMAND_REGISTER(cmd_ctx, NULL, "vsllink_usb_pid",
+                       vsllink_handle_usb_pid_command, COMMAND_CONFIG,
+                       NULL);
+       COMMAND_REGISTER(cmd_ctx, NULL, "vsllink_usb_bulkin",
+                       vsllink_handle_usb_bulkin_command, COMMAND_CONFIG,
+                       NULL);
+       COMMAND_REGISTER(cmd_ctx, NULL, "vsllink_usb_bulkout",
+                       vsllink_handle_usb_bulkout_command, COMMAND_CONFIG,
+                       NULL);
+       COMMAND_REGISTER(cmd_ctx, NULL, "vsllink_usb_interface",
+                       vsllink_handle_usb_interface_command, COMMAND_CONFIG,
+                       NULL);
+       COMMAND_REGISTER(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,
+       };