aboutsummaryrefslogtreecommitdiff
path: root/src/jtag/drivers/bitq.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/jtag/drivers/bitq.c')
-rw-r--r--src/jtag/drivers/bitq.c87
1 files changed, 28 insertions, 59 deletions
diff --git a/src/jtag/drivers/bitq.c b/src/jtag/drivers/bitq.c
index 87e0983d..ac58190e 100644
--- a/src/jtag/drivers/bitq.c
+++ b/src/jtag/drivers/bitq.c
@@ -17,6 +17,7 @@
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
@@ -25,8 +26,7 @@
#include "bitq.h"
#include <jtag/interface.h>
-
-struct bitq_interface* bitq_interface; /* low level bit queue interface */
+struct bitq_interface *bitq_interface; /* low level bit queue interface */
/* state of input queue */
struct bitq_state {
@@ -44,29 +44,23 @@ static struct bitq_state bitq_in_state;
static void bitq_in_proc(void)
{
/* loop through the queue */
- while (bitq_in_state.cmd)
- {
+ while (bitq_in_state.cmd) {
/* only JTAG_SCAN command may return data */
- if (bitq_in_state.cmd->type == JTAG_SCAN)
- {
+ if (bitq_in_state.cmd->type == JTAG_SCAN) {
/* loop through the fields */
- while (bitq_in_state.field_idx < bitq_in_state.cmd->cmd.scan->num_fields)
- {
+ while (bitq_in_state.field_idx < bitq_in_state.cmd->cmd.scan->num_fields) {
struct scan_field *field;
field = &bitq_in_state.cmd->cmd.scan->fields[bitq_in_state.field_idx];
- if (field->in_value)
- {
+ if (field->in_value) {
/* field scanning */
- while (bitq_in_state.bit_pos < field->num_bits)
- {
+ while (bitq_in_state.bit_pos < field->num_bits) {
/* index of byte being scanned */
int in_idx = bitq_in_state.bit_pos / 8;
/* mask of next bit to be scanned */
uint8_t in_mask = 1 << (bitq_in_state.bit_pos % 8);
int tdo = bitq_interface->in();
- if (tdo < 0)
- {
+ if (tdo < 0) {
#ifdef _DEBUG_JTAG_IO_
LOG_DEBUG("bitq in EOF");
#endif
@@ -89,7 +83,6 @@ static void bitq_in_proc(void)
}
}
-
static void bitq_io(int tms, int tdi, int tdo_req)
{
bitq_interface->out(tms, tdi, tdo_req);
@@ -98,25 +91,21 @@ static void bitq_io(int tms, int tdi, int tdo_req)
bitq_in_proc();
}
-
static void bitq_end_state(tap_state_t state)
{
- if (!tap_is_state_stable(state))
- {
+ if (!tap_is_state_stable(state)) {
LOG_ERROR("BUG: %i is not a valid end state", state);
exit(-1);
}
tap_set_end_state(state);
}
-
static void bitq_state_move(tap_state_t new_state)
{
int i = 0;
uint8_t tms_scan;
- if (!tap_is_state_stable(tap_get_state()) || !tap_is_state_stable(new_state))
- {
+ if (!tap_is_state_stable(tap_get_state()) || !tap_is_state_stable(new_state)) {
LOG_ERROR("TAP move from or to unstable state");
exit(-1);
}
@@ -124,8 +113,7 @@ static void bitq_state_move(tap_state_t new_state)
tms_scan = tap_get_tms_path(tap_get_state(), new_state);
int tms_count = tap_get_tms_path_len(tap_get_state(), new_state);
- for (i = 0; i < tms_count; i++)
- {
+ for (i = 0; i < tms_count; i++) {
bitq_io(tms_scan & 1, 0, 0);
tms_scan >>= 1;
}
@@ -133,19 +121,16 @@ static void bitq_state_move(tap_state_t new_state)
tap_set_state(new_state);
}
-
static void bitq_path_move(struct pathmove_command *cmd)
{
int i;
- for (i = 0; i <= cmd->num_states; i++)
- {
+ for (i = 0; i <= cmd->num_states; i++) {
if (tap_state_transition(tap_get_state(), false) == cmd->path[i])
bitq_io(0, 0, 0);
else if (tap_state_transition(tap_get_state(), true) == cmd->path[i])
bitq_io(1, 0, 0);
- else
- {
+ else {
LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(
tap_get_state()), tap_state_name(cmd->path[i]));
exit(-1);
@@ -157,7 +142,6 @@ static void bitq_path_move(struct pathmove_command *cmd)
tap_set_end_state(tap_get_state());
}
-
static void bitq_runtest(int num_cycles)
{
int i;
@@ -175,13 +159,12 @@ static void bitq_runtest(int num_cycles)
bitq_state_move(tap_get_end_state());
}
-
static void bitq_scan_field(struct scan_field *field, int do_pause)
{
int bit_cnt;
int tdo_req;
- const uint8_t* out_ptr;
+ const uint8_t *out_ptr;
uint8_t out_mask;
if (field->in_value)
@@ -189,36 +172,29 @@ static void bitq_scan_field(struct scan_field *field, int do_pause)
else
tdo_req = 0;
- if (field->out_value == NULL)
- {
+ if (field->out_value == NULL) {
/* just send zeros and request data from TDO */
for (bit_cnt = field->num_bits; bit_cnt > 1; bit_cnt--)
bitq_io(0, 0, tdo_req);
bitq_io(do_pause, 0, tdo_req);
- }
- else
- {
+ } else {
/* send data, and optionally request TDO */
out_mask = 0x01;
out_ptr = field->out_value;
- for (bit_cnt = field->num_bits; bit_cnt > 1; bit_cnt--)
- {
+ for (bit_cnt = field->num_bits; bit_cnt > 1; bit_cnt--) {
bitq_io(0, ((*out_ptr) & out_mask) != 0, tdo_req);
- if (out_mask == 0x80)
- {
+ if (out_mask == 0x80) {
out_mask = 0x01;
out_ptr++;
- }
- else
+ } else
out_mask <<= 1;
}
bitq_io(do_pause, ((*out_ptr) & out_mask) != 0, tdo_req);
}
- if (do_pause)
- {
+ if (do_pause) {
bitq_io(0, 0, 0);
if (tap_get_state() == TAP_IRSHIFT)
tap_set_state(TAP_IRPAUSE);
@@ -227,7 +203,6 @@ static void bitq_scan_field(struct scan_field *field, int do_pause)
}
}
-
static void bitq_scan(struct scan_command *cmd)
{
int i;
@@ -243,28 +218,25 @@ static void bitq_scan(struct scan_command *cmd)
bitq_scan_field(&cmd->fields[i], 1);
}
-
int bitq_execute_queue(void)
{
- struct jtag_command* cmd = jtag_command_queue; /* currently processed command */
+ struct jtag_command *cmd = jtag_command_queue; /* currently processed command */
bitq_in_state.cmd = jtag_command_queue;
bitq_in_state.field_idx = 0;
bitq_in_state.bit_pos = 0;
bitq_in_state.status = ERROR_OK;
- while (cmd)
- {
- switch (cmd->type)
- {
+ while (cmd) {
+ switch (cmd->type) {
case JTAG_RESET:
#ifdef _DEBUG_JTAG_IO_
LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
#endif
- if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
- {
+ if ((cmd->cmd.reset->trst == 1) ||
+ (cmd->cmd.reset->srst &&
+ (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
tap_set_state(TAP_RESET);
- }
bitq_interface->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
if (bitq_interface->in_rdy())
bitq_in_proc();
@@ -328,13 +300,11 @@ int bitq_execute_queue(void)
bitq_interface->flush();
bitq_in_proc();
- if (bitq_in_state.cmd)
- {
+ if (bitq_in_state.cmd) {
LOG_ERROR("missing data from bitq interface");
return ERROR_JTAG_QUEUE_FAILED;
}
- if (bitq_interface->in() >= 0)
- {
+ if (bitq_interface->in() >= 0) {
LOG_ERROR("extra data from bitq interface");
return ERROR_JTAG_QUEUE_FAILED;
}
@@ -342,7 +312,6 @@ int bitq_execute_queue(void)
return bitq_in_state.status;
}
-
void bitq_cleanup(void)
{
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-10-19 15:28:00 +0000