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/* SPDX-License-Identifier: GPL-2.0-or-later */
/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007-2010 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2009 SoftPLC Corporation *
* http://softplc.com *
* dick@softplc.com *
* *
* Copyright (C) 2009 Zachary T Welch *
* zw@superlucidity.net *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <jtag/jtag.h>
#include <jtag/interface.h>
#include <jtag/commands.h>
#include <jtag/minidriver.h>
#include <helper/command.h>
struct jtag_callback_entry {
struct jtag_callback_entry *next;
jtag_callback_t callback;
jtag_callback_data_t data0;
jtag_callback_data_t data1;
jtag_callback_data_t data2;
jtag_callback_data_t data3;
};
static struct jtag_callback_entry *jtag_callback_queue_head;
static struct jtag_callback_entry *jtag_callback_queue_tail;
static void jtag_callback_queue_reset(void)
{
jtag_callback_queue_head = NULL;
jtag_callback_queue_tail = NULL;
}
/**
* see jtag_add_ir_scan()
*
*/
int interface_jtag_add_ir_scan(struct jtag_tap *active,
const struct scan_field *in_fields, tap_state_t state)
{
size_t num_taps = jtag_tap_count_enabled();
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
struct scan_command *scan = cmd_queue_alloc(sizeof(struct scan_command));
struct scan_field *out_fields = cmd_queue_alloc(num_taps * sizeof(struct scan_field));
jtag_queue_command(cmd);
cmd->type = JTAG_SCAN;
cmd->cmd.scan = scan;
scan->ir_scan = true;
scan->num_fields = num_taps; /* one field per device */
scan->fields = out_fields;
scan->end_state = state;
struct scan_field *field = out_fields; /* keep track where we insert data */
/* loop over all enabled TAPs */
for (struct jtag_tap *tap = jtag_tap_next_enabled(NULL); tap; tap = jtag_tap_next_enabled(tap)) {
/* search the input field list for fields for the current TAP */
if (tap == active) {
/* if TAP is listed in input fields, copy the value */
tap->bypass = 0;
jtag_scan_field_clone(field, in_fields);
} else {
/* if a TAP isn't listed in input fields, set it to BYPASS */
tap->bypass = 1;
field->num_bits = tap->ir_length;
field->out_value = buf_set_ones(cmd_queue_alloc(DIV_ROUND_UP(tap->ir_length, 8)), tap->ir_length);
field->in_value = NULL; /* do not collect input for tap's in bypass */
}
/* update device information */
buf_cpy(field->out_value, tap->cur_instr, tap->ir_length);
field++;
}
/* paranoia: jtag_tap_count_enabled() and jtag_tap_next_enabled() not in sync */
assert(field == out_fields + num_taps);
return ERROR_OK;
}
/**
* see jtag_add_dr_scan()
*
*/
int interface_jtag_add_dr_scan(struct jtag_tap *active, int in_num_fields,
const struct scan_field *in_fields, tap_state_t state)
{
/* count devices in bypass */
size_t bypass_devices = 0;
for (struct jtag_tap *tap = jtag_tap_next_enabled(NULL); tap; tap = jtag_tap_next_enabled(tap)) {
if (tap->bypass)
bypass_devices++;
}
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
struct scan_command *scan = cmd_queue_alloc(sizeof(struct scan_command));
struct scan_field *out_fields = cmd_queue_alloc((in_num_fields + bypass_devices) * sizeof(struct scan_field));
jtag_queue_command(cmd);
cmd->type = JTAG_SCAN;
cmd->cmd.scan = scan;
scan->ir_scan = false;
scan->num_fields = in_num_fields + bypass_devices;
scan->fields = out_fields;
scan->end_state = state;
struct scan_field *field = out_fields; /* keep track where we insert data */
/* loop over all enabled TAPs */
for (struct jtag_tap *tap = jtag_tap_next_enabled(NULL); tap; tap = jtag_tap_next_enabled(tap)) {
/* if TAP is not bypassed insert matching input fields */
if (!tap->bypass) {
assert(active == tap);
#ifndef NDEBUG
/* remember initial position for assert() */
struct scan_field *start_field = field;
#endif /* NDEBUG */
for (int j = 0; j < in_num_fields; j++) {
jtag_scan_field_clone(field, in_fields + j);
field++;
}
assert(field > start_field); /* must have at least one input field per not bypassed TAP */
}
/* if a TAP is bypassed, generated a dummy bit*/
else {
field->num_bits = 1;
field->out_value = NULL;
field->in_value = NULL;
field++;
}
}
assert(field == out_fields + scan->num_fields); /* no superfluous input fields permitted */
return ERROR_OK;
}
static int jtag_add_plain_scan(int num_bits, const uint8_t *out_bits,
uint8_t *in_bits, tap_state_t state, bool ir_scan)
{
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
struct scan_command *scan = cmd_queue_alloc(sizeof(struct scan_command));
struct scan_field *out_fields = cmd_queue_alloc(sizeof(struct scan_field));
jtag_queue_command(cmd);
cmd->type = JTAG_SCAN;
cmd->cmd.scan = scan;
scan->ir_scan = ir_scan;
scan->num_fields = 1;
scan->fields = out_fields;
scan->end_state = state;
out_fields->num_bits = num_bits;
out_fields->out_value = buf_cpy(out_bits, cmd_queue_alloc(DIV_ROUND_UP(num_bits, 8)), num_bits);
out_fields->in_value = in_bits;
return ERROR_OK;
}
int interface_jtag_add_plain_dr_scan(int num_bits, const uint8_t *out_bits, uint8_t *in_bits, tap_state_t state)
{
return jtag_add_plain_scan(num_bits, out_bits, in_bits, state, false);
}
int interface_jtag_add_plain_ir_scan(int num_bits, const uint8_t *out_bits, uint8_t *in_bits, tap_state_t state)
{
return jtag_add_plain_scan(num_bits, out_bits, in_bits, state, true);
}
int interface_jtag_add_tlr(void)
{
tap_state_t state = TAP_RESET;
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_TLR_RESET;
cmd->cmd.statemove = cmd_queue_alloc(sizeof(struct statemove_command));
cmd->cmd.statemove->end_state = state;
return ERROR_OK;
}
int interface_add_tms_seq(unsigned num_bits, const uint8_t *seq, enum tap_state state)
{
struct jtag_command *cmd;
cmd = cmd_queue_alloc(sizeof(struct jtag_command));
if (!cmd)
return ERROR_FAIL;
cmd->type = JTAG_TMS;
cmd->cmd.tms = cmd_queue_alloc(sizeof(*cmd->cmd.tms));
if (!cmd->cmd.tms)
return ERROR_FAIL;
/* copy the bits; our caller doesn't guarantee they'll persist */
cmd->cmd.tms->num_bits = num_bits;
cmd->cmd.tms->bits = buf_cpy(seq,
cmd_queue_alloc(DIV_ROUND_UP(num_bits, 8)), num_bits);
if (!cmd->cmd.tms->bits)
return ERROR_FAIL;
jtag_queue_command(cmd);
return ERROR_OK;
}
int interface_jtag_add_pathmove(int num_states, const tap_state_t *path)
{
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_PATHMOVE;
cmd->cmd.pathmove = cmd_queue_alloc(sizeof(struct pathmove_command));
cmd->cmd.pathmove->num_states = num_states;
cmd->cmd.pathmove->path = cmd_queue_alloc(sizeof(tap_state_t) * num_states);
for (int i = 0; i < num_states; i++)
cmd->cmd.pathmove->path[i] = path[i];
return ERROR_OK;
}
int interface_jtag_add_runtest(int num_cycles, tap_state_t state)
{
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_RUNTEST;
cmd->cmd.runtest = cmd_queue_alloc(sizeof(struct runtest_command));
cmd->cmd.runtest->num_cycles = num_cycles;
cmd->cmd.runtest->end_state = state;
return ERROR_OK;
}
int interface_jtag_add_clocks(int num_cycles)
{
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_STABLECLOCKS;
cmd->cmd.stableclocks = cmd_queue_alloc(sizeof(struct stableclocks_command));
cmd->cmd.stableclocks->num_cycles = num_cycles;
return ERROR_OK;
}
int interface_jtag_add_reset(int req_trst, int req_srst)
{
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_RESET;
cmd->cmd.reset = cmd_queue_alloc(sizeof(struct reset_command));
cmd->cmd.reset->trst = req_trst;
cmd->cmd.reset->srst = req_srst;
return ERROR_OK;
}
int interface_jtag_add_sleep(uint32_t us)
{
/* allocate memory for a new list member */
struct jtag_command *cmd = cmd_queue_alloc(sizeof(struct jtag_command));
jtag_queue_command(cmd);
cmd->type = JTAG_SLEEP;
cmd->cmd.sleep = cmd_queue_alloc(sizeof(struct sleep_command));
cmd->cmd.sleep->us = us;
return ERROR_OK;
}
/* add callback to end of queue */
void interface_jtag_add_callback4(jtag_callback_t callback,
jtag_callback_data_t data0, jtag_callback_data_t data1,
jtag_callback_data_t data2, jtag_callback_data_t data3)
{
struct jtag_callback_entry *entry = cmd_queue_alloc(sizeof(struct jtag_callback_entry));
entry->next = NULL;
entry->callback = callback;
entry->data0 = data0;
entry->data1 = data1;
entry->data2 = data2;
entry->data3 = data3;
if (!jtag_callback_queue_head) {
jtag_callback_queue_head = entry;
jtag_callback_queue_tail = entry;
} else {
jtag_callback_queue_tail->next = entry;
jtag_callback_queue_tail = entry;
}
}
int interface_jtag_execute_queue(void)
{
static int reentry;
assert(reentry == 0);
reentry++;
int retval = default_interface_jtag_execute_queue();
if (retval == ERROR_OK) {
struct jtag_callback_entry *entry;
for (entry = jtag_callback_queue_head; entry; entry = entry->next) {
retval = entry->callback(entry->data0, entry->data1, entry->data2, entry->data3);
if (retval != ERROR_OK)
break;
}
}
jtag_command_queue_reset();
jtag_callback_queue_reset();
reentry--;
return retval;
}
static int jtag_convert_to_callback4(jtag_callback_data_t data0,
jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
{
((jtag_callback1_t)data1)(data0);
return ERROR_OK;
}
void interface_jtag_add_callback(jtag_callback1_t callback, jtag_callback_data_t data0)
{
jtag_add_callback4(jtag_convert_to_callback4, data0, (jtag_callback_data_t)callback, 0, 0);
}
void jtag_add_callback(jtag_callback1_t f, jtag_callback_data_t data0)
{
interface_jtag_add_callback(f, data0);
}
void jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
jtag_callback_data_t data1, jtag_callback_data_t data2,
jtag_callback_data_t data3)
{
interface_jtag_add_callback4(f, data0, data1, data2, data3);
}
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