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SVF player courtesy of Simon Qian <simonqian@SimonQian.com>

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git-svn-id: svn://svn.berlios.de/openocd/trunk@1339 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
kc8apf
2009-01-19 07:13:02 +00:00
parent 2aed5dd40b
commit c8bc0bb1ae
9 changed files with 2060 additions and 253 deletions
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557
src/jtag/vsllink.c
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@@ -1,5 +1,5 @@
/***************************************************************************
* Copyright (C) 2007 by Simon Qian <SimonQian@SimonQian.com> *
* Copyright (C) 2009 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 *
@@ -49,17 +49,12 @@
#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;
u16 vsllink_pid;
u8 vsllink_bulkout;
u8 vsllink_bulkin;
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
#define VSLLINK_USB_TIMEOUT 5000
static int VSLLINK_BufferSize = 1024;
@@ -77,8 +72,11 @@ static u8* vsllink_usb_out_buffer = NULL;
#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_CMDJTAGSEQ_TMSBYTE 0x00
#define VSLLINK_CMDJTAGSEQ_TMS0BYTE 0x40
#define VSLLINK_CMDJTAGSEQ_SCAN 0x80
#define VSLLINK_CMDJTAGSEQ_CMDMSK 0xC0
@@ -109,21 +107,21 @@ static u8* vsllink_usb_out_buffer = NULL;
u8 VSLLINK_tap_move[6][6] =
{
/* TLR RTI SD PD SI PI */
{0xff, 0x00, 0x2f, 0x0a, 0x37, 0x16}, /* TLR */
{0xff, 0x7f, 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, 0x60, 0x40, 0x5c, 0x3c, 0x5e}, /* PD */
{0xff, 0x61, 0x07, 0x17, 0x00, 0x01}, /* SI */
{0xff, 0x60, 0x38, 0x17, 0x40, 0x2f} /* PI */
{0xff, 0x60, 0x38, 0x5c, 0x40, 0x5e} /* PI */
};
u8 VSLLINK_TAP_MOVE_FROM_E1[6] =
typedef struct insert_insignificant_operation
{
// TLR RTI SD PD SI PI
0xff, 0x60, 0x38, 0x5c, 0x3c, 0x5E
};
unsigned char insert_value;
unsigned char insert_position;
}insert_insignificant_operation_t;
u8 VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[7][6][2] =
insert_insignificant_operation_t VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[6][6] =
{
/* stuff offset */
{/* TLR */
@@ -175,6 +173,19 @@ u8 VSLLINK_BIT_MSK[8] =
0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f
};
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];
/* External interface functions */
int vsllink_execute_queue(void);
int vsllink_speed(int speed);
@@ -219,8 +230,8 @@ 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;
static int vsllink_tms_data_len = 0;
static u8* vsllink_tms_cmd_pos;
vsllink_jtag_t* vsllink_jtag_handle;
@@ -255,7 +266,7 @@ int vsllink_execute_queue(void)
switch (cmd->type)
{
case JTAG_END_STATE:
DEBUG_JTAG_IO("end_state: %i", cmd->cmd.end_state->end_state);
DEBUG_JTAG_IO("end_state: %s", jtag_state_name(cmd->cmd.end_state->end_state));
if (cmd->cmd.end_state->end_state != -1)
{
@@ -264,9 +275,9 @@ int vsllink_execute_queue(void)
break;
case JTAG_RUNTEST:
DEBUG_JTAG_IO( "runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \
cmd->cmd.runtest->end_state);
DEBUG_JTAG_IO( "runtest %i cycles, end in %s", cmd->cmd.runtest->num_cycles, \
jtag_state_name(cmd->cmd.runtest->end_state));
if (cmd->cmd.runtest->end_state != -1)
{
vsllink_end_state(cmd->cmd.runtest->end_state);
@@ -275,7 +286,7 @@ int vsllink_execute_queue(void)
break;
case JTAG_STATEMOVE:
DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
DEBUG_JTAG_IO("statemove end in %s", jtag_state_name(cmd->cmd.statemove->end_state));
if (cmd->cmd.statemove->end_state != -1)
{
@@ -285,9 +296,9 @@ int vsllink_execute_queue(void)
break;
case JTAG_PATHMOVE:
DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
DEBUG_JTAG_IO("pathmove: %i states, end in %s", \
cmd->cmd.pathmove->num_states, \
cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
jtag_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;
@@ -301,11 +312,11 @@ int vsllink_execute_queue(void)
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);
DEBUG_JTAG_IO("JTAG Scan write IR(%d bits), end in %s:", scan_size, jtag_state_name(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);
DEBUG_JTAG_IO("JTAG Scan write DR(%d bits), end in %s:", scan_size, jtag_state_name(cmd->cmd.scan->end_state));
}
#ifdef _DEBUG_JTAG_IO_
@@ -470,8 +481,7 @@ 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;
result = vsllink_usb_write(vsllink_jtag_handle, 3);
if (result != 3)
if (vsllink_usb_write(vsllink_jtag_handle, 3) != 3)
{
LOG_ERROR("VSLLink USB send data error");
exit(-1);
@@ -490,6 +500,17 @@ 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_jtag_handle, 3) != 3)
{
LOG_ERROR("VSLLink USB send data error");
exit(-1);
}
// disconnect
vsllink_simple_command(VSLLINK_CMD_DISCONN);
vsllink_usb_close(vsllink_jtag_handle);
}
@@ -506,24 +527,29 @@ int vsllink_quit(void)
}
// 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)
// length of VSLLINK_CMDJTAGSEQ_TMSBYTE has been set, no need to set it here.
void vsllink_append_tms(void)
{
u8 tms_scan = VSLLINK_TAP_MOVE(TAP_IDLE, state);
u8 tms_scan = VSLLINK_TAP_MOVE(cur_state, end_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))
if (((cur_state != TAP_RESET) && (cur_state != TAP_IDLE) && (cur_state != TAP_DRPAUSE) && (cur_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[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 = (tms_scan & VSLLINK_BIT_MSK[VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_map[cur_state]][tap_move_map[end_state]].insert_position]) << \
vsllink_tms_data_len;
if (VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_map[cur_state]][tap_move_map[end_state]].insert_value == 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 |= VSLLINK_BIT_MSK[8 - vsllink_tms_data_len] << \
(vsllink_tms_data_len + VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_map[cur_state]][tap_move_map[end_state]].insert_position);
}
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]);
tms2 |= (tms_scan >> VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_map[cur_state]][tap_move_map[end_state]].insert_position) << \
(8 + VSLLINK_TAP_MOVE_INSERT_INSIGNIFICANT[tap_move_map[cur_state]][tap_move_map[end_state]].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;
@@ -553,7 +579,7 @@ void vsllink_state_move(void)
{
if (vsllink_tms_data_len > 0)
{
VSLLINK_add_tms_from_RTI(end_state);
vsllink_append_tms();
}
else
{
@@ -577,26 +603,32 @@ void vsllink_add_path(int start, int num, enum tap_state *path)
{
if (i > 0)
{
vsllink_usb_out_buffer[++vsllink_usb_out_buffer_idx] = 0;
}
else
{
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
vsllink_usb_out_buffer_idx++;
}
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 if (path[i - start] == tap_transitions[cur_state].low)
{
// nothing to do
}
else
{
LOG_ERROR("BUG: %d -> %d isn't a valid TAP transition", cur_state, path[i]);
LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", jtag_state_name(cur_state), jtag_state_name(path[i]));
exit(-1);
}
cur_state = path[i];
cur_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;
}
end_state = cur_state;
}
@@ -606,42 +638,68 @@ void vsllink_path_move(int num_states, enum tap_state *path)
if (vsllink_tms_data_len > 0)
{
if ((vsllink_tms_data_len + num_states) < 8)
// 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)
{
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)
// merge into last tms shift
if (tms_len < 8)
{
*vsllink_tms_cmd_pos++;
// just append tms data to the last tms byte
vsllink_add_path(vsllink_tms_data_len, num_states, path);
}
else
else if (tms_len == 8)
{
// 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);
// 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_idx = 16 - vsllink_tms_data_len;
vsllink_usb_out_buffer_idx++;
num_states -= 16 - vsllink_tms_data_len;
path += 16 - vsllink_tms_data_len;
num_states -= 16 - vsllink_tms_data_len;
vsllink_tms_data_len = 0;
vsllink_tms_cmd_pos = NULL;
}
@@ -677,14 +735,16 @@ void vsllink_path_move(int num_states, enum tap_state *path)
{
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;
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;
}
@@ -694,164 +754,147 @@ void vsllink_path_move(int num_states, enum tap_state *path)
void vsllink_runtest(int num_cycles)
{
int i = 0, j;
int tms_len, first_tms = 0, tms_cmd_pos = 0;
int tms_len;
enum tap_state saved_end_state = end_state;
if (cur_state != TAP_IDLE)
{
// enter into IDLE state
vsllink_end_state(TAP_IDLE);
vsllink_state_move();
}
else
{
// cur_state == TAP_IDLE
if (vsllink_tms_data_len > 0)
{
VSLLINK_add_tms_from_RTI(end_state);
}
else
{
first_tms = 1;
// 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_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;
}
else if (tms_len == 8)
{
// end last tms shift command
// just reduce it, no need to append_tms
(*vsllink_tms_cmd_pos)--;
vsllink_usb_out_buffer_idx++;
}
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_idx++;
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
}
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)--;
// move the command pointer to the next empty position
vsllink_usb_out_buffer_idx++;
// 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] = 0;
}
}
else if (tms_len == 16)
{
// end last tms shift command
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;
if (vsllink_tms_data_len == 0)
{
vsllink_tms_cmd_pos = NULL;
}
num_cycles = 0;
}
else
{
vsllink_usb_out_buffer_idx++;
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = 0;
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)
{
// cur_state == TAP_IDLE
if ((vsllink_tms_data_len + num_cycles) < 8)
// num_cycles == 0
// no need to shift
if (num_cycles > 0)
{
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;
LOG_ERROR("There MUST be some bugs in the driver");
exit(-1);
}
}
else
{
// Set end_state if no RTI shifts
vsllink_end_state(saved_end_state);
cur_state = TAP_IDLE;
if (saved_end_state != TAP_IDLE)
// get number of bytes left to be sent
tms_len = num_cycles >> 3;
if (tms_len > 0)
{
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);
vsllink_tap_ensure_space(1, 5);
// if tms_len > 0, vsllink_tms_data_len == 0
// so just add new command
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_TMS0BYTE;
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;
cur_state = saved_end_state;
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();
vsllink_usb_out_buffer[0] = VSLLINK_CMD_HW_JTAGSEQCMD;
vsllink_usb_out_buffer_idx = 3;
}
}
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;
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx] = 0;
}
}
// post-process
// set end_state
vsllink_end_state(saved_end_state);
cur_state = TAP_IDLE;
if (end_state != TAP_IDLE)
{
vsllink_state_move();
}
}
@@ -861,6 +904,11 @@ void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, s
u8 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)
{
@@ -877,10 +925,27 @@ void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, s
{
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);
// 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;
@@ -898,10 +963,11 @@ void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, s
vsllink_tap_append_scan(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_add_tms_from_RTI(end_state);
vsllink_append_tms();
vsllink_tap_ensure_space(1, tdi_len + 5);
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_CMDJTAGSEQ_SCAN;
@@ -939,7 +1005,7 @@ void vsllink_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, s
if (cur_state != end_state)
{
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE_FROM_E1[tap_move_map[end_state]];
vsllink_usb_out_buffer[vsllink_usb_out_buffer_idx++] = VSLLINK_TAP_MOVE(cur_state, end_state);
}
else
{
@@ -1041,19 +1107,6 @@ int vsllink_handle_usb_bulkout_command(struct command_context_s *cmd_ctx, char *
/***************************************************************************/
/* VSLLink tap functions */
typedef struct
{
int length; /* Number of bits to read */
int offset;
scan_command_t *command; /* Corresponding scan command */
u8 *buffer;
} pending_scan_result_t;
#define MAX_PENDING_SCAN_RESULTS 256
static int pending_scan_results_length;
static pending_scan_result_t pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
void vsllink_tap_init(void)
{
vsllink_usb_out_buffer_idx = 0;
@@ -1101,7 +1154,7 @@ void vsllink_tap_append_scan(int length, u8 *buffer, scan_command_t *command, in
}
/* 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. */
* For the purpose of padding we assume that we are in reset or idle or pause state. */
int vsllink_tap_execute(void)
{
int i;
@@ -1110,13 +1163,17 @@ int vsllink_tap_execute(void)
if (vsllink_tms_data_len > 0)
{
if((cur_state != TAP_RESET) && (cur_state != TAP_IDLE) && (cur_state != TAP_IRPAUSE) && (cur_state != TAP_DRPAUSE))
{
LOG_WARNING("%s is not in RESET or IDLE or PAUSR state", jtag_state_name(cur_state));
}
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);
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
{
@@ -1146,27 +1203,31 @@ int vsllink_tap_execute(void)
int length = pending_scan_result->length;
int offset = pending_scan_result->offset;
scan_command_t *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;
/* 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);
DEBUG_JTAG_IO("JTAG scan read(%d bits):", length);
#ifdef _DEBUG_JTAG_IO_
vsllink_debug_buffer(buffer, (length + 7) >> 3);
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)
{
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