* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "mpsse.h"
#include "helper/log.h"
-#include <libusb-1.0/libusb.h>
+#include "helper/time_support.h"
+#include <libusb.h>
/* Compatibility define for older libusb-1.0 */
#ifndef LIBUSB_CALL
#define LIBUSB_CALL
#endif
-#ifdef _DEBUG_JTAG_IO_
-#define DEBUG_IO(expr...) LOG_DEBUG(expr)
#define DEBUG_PRINT_BUF(buf, len) \
do { \
- char buf_string[32 * 3 + 1]; \
- int buf_string_pos = 0; \
- for (int i = 0; i < len; i++) { \
- buf_string_pos += sprintf(buf_string + buf_string_pos, " %02x", buf[i]); \
- if (i % 32 == 32 - 1) { \
- LOG_DEBUG("%s", buf_string); \
- buf_string_pos = 0; \
+ if (LOG_LEVEL_IS(LOG_LVL_DEBUG_IO)) { \
+ char buf_string[32 * 3 + 1]; \
+ int buf_string_pos = 0; \
+ for (int i = 0; i < len; i++) { \
+ buf_string_pos += sprintf(buf_string + buf_string_pos, " %02x", buf[i]); \
+ if (i % 32 == 32 - 1) { \
+ LOG_DEBUG_IO("%s", buf_string); \
+ buf_string_pos = 0; \
+ } \
} \
+ if (buf_string_pos > 0) \
+ LOG_DEBUG_IO("%s", buf_string);\
} \
- if (buf_string_pos > 0) \
- LOG_DEBUG("%s", buf_string);\
} while (0)
-#else
-#define DEBUG_IO(expr...) do {} while (0)
-#define DEBUG_PRINT_BUF(buf, len) do {} while (0)
-#endif
#define FTDI_DEVICE_OUT_REQTYPE (LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE)
#define FTDI_DEVICE_IN_REQTYPE (0x80 | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE)
uint8_t *read_chunk;
unsigned read_chunk_size;
struct bit_copy_queue read_queue;
+ int retval;
};
/* Returns true if the string descriptor indexed by str_index in device matches string */
retval = libusb_get_string_descriptor_ascii(device, str_index, (unsigned char *)desc_string,
sizeof(desc_string));
if (retval < 0) {
- LOG_ERROR("libusb_get_string_descriptor_ascii() failed with %d", retval);
+ LOG_ERROR("libusb_get_string_descriptor_ascii() failed with %s", libusb_error_name(retval));
return false;
}
return strncmp(string, desc_string, sizeof(desc_string)) == 0;
}
+static bool device_location_equal(libusb_device *device, const char *location)
+{
+ bool result = false;
+#ifdef HAVE_LIBUSB_GET_PORT_NUMBERS
+ char *loc = strdup(location);
+ uint8_t port_path[7];
+ int path_step, path_len;
+ uint8_t dev_bus = libusb_get_bus_number(device);
+ char *ptr;
+
+ path_len = libusb_get_port_numbers(device, port_path, 7);
+ if (path_len == LIBUSB_ERROR_OVERFLOW) {
+ LOG_ERROR("cannot determine path to usb device! (more than 7 ports in path)");
+ goto done;
+ }
+
+ LOG_DEBUG("device path has %i steps", path_len);
+
+ ptr = strtok(loc, "-:");
+ if (ptr == NULL) {
+ LOG_DEBUG("no ':' in path");
+ goto done;
+ }
+ if (atoi(ptr) != dev_bus) {
+ LOG_DEBUG("bus mismatch");
+ goto done;
+ }
+
+ path_step = 0;
+ while (path_step < 7) {
+ ptr = strtok(NULL, ".,");
+ if (ptr == NULL) {
+ LOG_DEBUG("no more tokens in path at step %i", path_step);
+ break;
+ }
+
+ if (path_step < path_len
+ && atoi(ptr) != port_path[path_step]) {
+ LOG_DEBUG("path mismatch at step %i", path_step);
+ break;
+ }
+
+ path_step++;
+ };
+
+ /* walked the full path, all elements match */
+ if (path_step == path_len)
+ result = true;
+
+ done:
+ free(loc);
+#endif
+ return result;
+}
+
/* Helper to open a libusb device that matches vid, pid, product string and/or serial string.
* Set any field to 0 as a wildcard. If the device is found true is returned, with ctx containing
* the already opened handle. ctx->interface must be set to the desired interface (channel) number
* prior to calling this function. */
static bool open_matching_device(struct mpsse_ctx *ctx, const uint16_t *vid, const uint16_t *pid,
- const char *product, const char *serial)
+ const char *product, const char *serial, const char *location)
{
libusb_device **list;
struct libusb_device_descriptor desc;
bool found = false;
ssize_t cnt = libusb_get_device_list(ctx->usb_ctx, &list);
if (cnt < 0)
- LOG_ERROR("libusb_get_device_list() failed with %zi", cnt);
+ LOG_ERROR("libusb_get_device_list() failed with %s", libusb_error_name(cnt));
for (ssize_t i = 0; i < cnt; i++) {
libusb_device *device = list[i];
err = libusb_get_device_descriptor(device, &desc);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_get_device_descriptor() failed with %d", err);
+ LOG_ERROR("libusb_get_device_descriptor() failed with %s", libusb_error_name(err));
continue;
}
err = libusb_open(device, &ctx->usb_dev);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_open() failed with %d", err);
+ LOG_ERROR("libusb_open() failed with %s",
+ libusb_error_name(err));
+ continue;
+ }
+
+ if (location && !device_location_equal(device, location)) {
+ libusb_close(ctx->usb_dev);
continue;
}
err = libusb_get_config_descriptor(libusb_get_device(ctx->usb_dev), 0, &config0);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_get_config_descriptor() failed with %d", err);
+ LOG_ERROR("libusb_get_config_descriptor() failed with %s", libusb_error_name(err));
libusb_close(ctx->usb_dev);
return false;
}
int cfg;
err = libusb_get_configuration(ctx->usb_dev, &cfg);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_get_configuration() failed with %d", err);
+ LOG_ERROR("libusb_get_configuration() failed with %s", libusb_error_name(err));
goto error;
}
if (desc.bNumConfigurations > 0 && cfg != config0->bConfigurationValue) {
err = libusb_set_configuration(ctx->usb_dev, config0->bConfigurationValue);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_set_configuration() failed with %d", err);
+ LOG_ERROR("libusb_set_configuration() failed with %s", libusb_error_name(err));
goto error;
}
}
err = libusb_detach_kernel_driver(ctx->usb_dev, ctx->interface);
if (err != LIBUSB_SUCCESS && err != LIBUSB_ERROR_NOT_FOUND
&& err != LIBUSB_ERROR_NOT_SUPPORTED) {
- LOG_ERROR("libusb_detach_kernel_driver() failed with %d", err);
- goto error;
+ LOG_WARNING("libusb_detach_kernel_driver() failed with %s, trying to continue anyway",
+ libusb_error_name(err));
}
err = libusb_claim_interface(ctx->usb_dev, ctx->interface);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_claim_interface() failed with %d", err);
+ LOG_ERROR("libusb_claim_interface() failed with %s", libusb_error_name(err));
goto error;
}
SIO_RESET_REQUEST, SIO_RESET_SIO,
ctx->index, NULL, 0, ctx->usb_write_timeout);
if (err < 0) {
- LOG_ERROR("failed to reset FTDI device: %d", err);
+ LOG_ERROR("failed to reset FTDI device: %s", libusb_error_name(err));
goto error;
}
}
struct mpsse_ctx *mpsse_open(const uint16_t *vid, const uint16_t *pid, const char *description,
- const char *serial, int channel)
+ const char *serial, const char *location, int channel)
{
struct mpsse_ctx *ctx = calloc(1, sizeof(*ctx));
int err;
ctx->write_size = 16384;
ctx->read_chunk = malloc(ctx->read_chunk_size);
ctx->read_buffer = malloc(ctx->read_size);
- ctx->write_buffer = malloc(ctx->write_size);
+
+ /* Use calloc to make valgrind happy: buffer_write() sets payload
+ * on bit basis, so some bits can be left uninitialized in write_buffer.
+ * Although this is perfectly ok with MPSSE, valgrind reports
+ * Syscall param ioctl(USBDEVFS_SUBMITURB).buffer points to uninitialised byte(s) */
+ ctx->write_buffer = calloc(1, ctx->write_size);
+
if (!ctx->read_chunk || !ctx->read_buffer || !ctx->write_buffer)
goto error;
err = libusb_init(&ctx->usb_ctx);
if (err != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_init() failed with %d", err);
+ LOG_ERROR("libusb_init() failed with %s", libusb_error_name(err));
goto error;
}
- if (!open_matching_device(ctx, vid, pid, description, serial)) {
+ if (!open_matching_device(ctx, vid, pid, description, serial, location)) {
/* Four hex digits plus terminating zero each */
char vidstr[5];
char pidstr[5];
- LOG_ERROR("unable to open ftdi device with vid %s, pid %s, description '%s' and "
- "serial '%s'",
+ LOG_ERROR("unable to open ftdi device with vid %s, pid %s, description '%s', "
+ "serial '%s' at bus location '%s'",
vid ? sprintf(vidstr, "%04x", *vid), vidstr : "*",
pid ? sprintf(pidstr, "%04x", *pid), pidstr : "*",
description ? description : "*",
- serial ? serial : "*");
+ serial ? serial : "*",
+ location ? location : "*");
ctx->usb_dev = 0;
goto error;
}
SIO_SET_LATENCY_TIMER_REQUEST, 255, ctx->index, NULL, 0,
ctx->usb_write_timeout);
if (err < 0) {
- LOG_ERROR("unable to set latency timer: %d", err);
+ LOG_ERROR("unable to set latency timer: %s", libusb_error_name(err));
goto error;
}
0,
ctx->usb_write_timeout);
if (err < 0) {
- LOG_ERROR("unable to set MPSSE bitmode: %d", err);
+ LOG_ERROR("unable to set MPSSE bitmode: %s", libusb_error_name(err));
goto error;
}
LOG_DEBUG("-");
ctx->write_count = 0;
ctx->read_count = 0;
+ ctx->retval = ERROR_OK;
bit_copy_discard(&ctx->read_queue);
err = libusb_control_transfer(ctx->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_RESET_REQUEST,
SIO_RESET_PURGE_RX, ctx->index, NULL, 0, ctx->usb_write_timeout);
if (err < 0) {
- LOG_ERROR("unable to purge ftdi rx buffers: %d", err);
+ LOG_ERROR("unable to purge ftdi rx buffers: %s", libusb_error_name(err));
return;
}
err = libusb_control_transfer(ctx->usb_dev, FTDI_DEVICE_OUT_REQTYPE, SIO_RESET_REQUEST,
SIO_RESET_PURGE_TX, ctx->index, NULL, 0, ctx->usb_write_timeout);
if (err < 0) {
- LOG_ERROR("unable to purge ftdi tx buffers: %d", err);
+ LOG_ERROR("unable to purge ftdi tx buffers: %s", libusb_error_name(err));
return;
}
}
static void buffer_write_byte(struct mpsse_ctx *ctx, uint8_t data)
{
- DEBUG_IO("%02x", data);
+ LOG_DEBUG_IO("%02x", data);
assert(ctx->write_count < ctx->write_size);
ctx->write_buffer[ctx->write_count++] = data;
}
static unsigned buffer_write(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset,
unsigned bit_count)
{
- DEBUG_IO("%d bits", bit_count);
+ LOG_DEBUG_IO("%d bits", bit_count);
assert(ctx->write_count + DIV_ROUND_UP(bit_count, 8) <= ctx->write_size);
bit_copy(ctx->write_buffer + ctx->write_count, 0, out, out_offset, bit_count);
ctx->write_count += DIV_ROUND_UP(bit_count, 8);
static unsigned buffer_add_read(struct mpsse_ctx *ctx, uint8_t *in, unsigned in_offset,
unsigned bit_count, unsigned offset)
{
- DEBUG_IO("%d bits, offset %d", bit_count, offset);
+ LOG_DEBUG_IO("%d bits, offset %d", bit_count, offset);
assert(ctx->read_count + DIV_ROUND_UP(bit_count, 8) <= ctx->read_size);
bit_copy_queued(&ctx->read_queue, in, in_offset, ctx->read_buffer + ctx->read_count, offset,
bit_count);
return bit_count;
}
-int mpsse_clock_data_out(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset,
+void mpsse_clock_data_out(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset,
unsigned length, uint8_t mode)
{
- return mpsse_clock_data(ctx, out, out_offset, 0, 0, length, mode);
+ mpsse_clock_data(ctx, out, out_offset, 0, 0, length, mode);
}
-int mpsse_clock_data_in(struct mpsse_ctx *ctx, uint8_t *in, unsigned in_offset, unsigned length,
+void mpsse_clock_data_in(struct mpsse_ctx *ctx, uint8_t *in, unsigned in_offset, unsigned length,
uint8_t mode)
{
- return mpsse_clock_data(ctx, 0, 0, in, in_offset, length, mode);
+ mpsse_clock_data(ctx, 0, 0, in, in_offset, length, mode);
}
-int mpsse_clock_data(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset, uint8_t *in,
+void mpsse_clock_data(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset, uint8_t *in,
unsigned in_offset, unsigned length, uint8_t mode)
{
/* TODO: Fix MSB first modes */
- DEBUG_IO("%s%s %d bits", in ? "in" : "", out ? "out" : "", length);
- int retval = ERROR_OK;
+ LOG_DEBUG_IO("%s%s %d bits", in ? "in" : "", out ? "out" : "", length);
+
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
/* TODO: On H chips, use command 0x8E/0x8F if in and out are both 0 */
if (out || (!out && !in))
/* Guarantee buffer space enough for a minimum size transfer */
if (buffer_write_space(ctx) + (length < 8) < (out || (!out && !in) ? 4 : 3)
|| (in && buffer_read_space(ctx) < 1))
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
if (length < 8) {
/* Transfer remaining bits in bit mode */
}
}
}
- return retval;
}
-int mpsse_clock_tms_cs_out(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset,
+void mpsse_clock_tms_cs_out(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset,
unsigned length, bool tdi, uint8_t mode)
{
- return mpsse_clock_tms_cs(ctx, out, out_offset, 0, 0, length, tdi, mode);
+ mpsse_clock_tms_cs(ctx, out, out_offset, 0, 0, length, tdi, mode);
}
-int mpsse_clock_tms_cs(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset, uint8_t *in,
+void mpsse_clock_tms_cs(struct mpsse_ctx *ctx, const uint8_t *out, unsigned out_offset, uint8_t *in,
unsigned in_offset, unsigned length, bool tdi, uint8_t mode)
{
- DEBUG_IO("%sout %d bits, tdi=%d", in ? "in" : "", length, tdi);
+ LOG_DEBUG_IO("%sout %d bits, tdi=%d", in ? "in" : "", length, tdi);
assert(out);
- int retval = ERROR_OK;
+
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
mode |= 0x42;
if (in)
while (length > 0) {
/* Guarantee buffer space enough for a minimum size transfer */
if (buffer_write_space(ctx) < 3 || (in && buffer_read_space(ctx) < 1))
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
/* Byte transfer */
unsigned this_bits = length;
length -= this_bits;
}
}
- return retval;
}
-int mpsse_set_data_bits_low_byte(struct mpsse_ctx *ctx, uint8_t data, uint8_t dir)
+void mpsse_set_data_bits_low_byte(struct mpsse_ctx *ctx, uint8_t data, uint8_t dir)
{
- DEBUG_IO("-");
- int retval = ERROR_OK;
+ LOG_DEBUG_IO("-");
+
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
if (buffer_write_space(ctx) < 3)
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, 0x80);
buffer_write_byte(ctx, data);
buffer_write_byte(ctx, dir);
-
- return retval;
}
-int mpsse_set_data_bits_high_byte(struct mpsse_ctx *ctx, uint8_t data, uint8_t dir)
+void mpsse_set_data_bits_high_byte(struct mpsse_ctx *ctx, uint8_t data, uint8_t dir)
{
- DEBUG_IO("-");
- int retval = ERROR_OK;
+ LOG_DEBUG_IO("-");
+
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
if (buffer_write_space(ctx) < 3)
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, 0x82);
buffer_write_byte(ctx, data);
buffer_write_byte(ctx, dir);
-
- return retval;
}
-int mpsse_read_data_bits_low_byte(struct mpsse_ctx *ctx, uint8_t *data)
+void mpsse_read_data_bits_low_byte(struct mpsse_ctx *ctx, uint8_t *data)
{
- DEBUG_IO("-");
- int retval = ERROR_OK;
+ LOG_DEBUG_IO("-");
- if (buffer_write_space(ctx) < 1)
- retval = mpsse_flush(ctx);
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
+
+ if (buffer_write_space(ctx) < 1 || buffer_read_space(ctx) < 1)
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, 0x81);
buffer_add_read(ctx, data, 0, 8, 0);
-
- return retval;
}
-int mpsse_read_data_bits_high_byte(struct mpsse_ctx *ctx, uint8_t *data)
+void mpsse_read_data_bits_high_byte(struct mpsse_ctx *ctx, uint8_t *data)
{
- DEBUG_IO("-");
- int retval = ERROR_OK;
+ LOG_DEBUG_IO("-");
- if (buffer_write_space(ctx) < 1)
- retval = mpsse_flush(ctx);
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
+
+ if (buffer_write_space(ctx) < 1 || buffer_read_space(ctx) < 1)
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, 0x83);
buffer_add_read(ctx, data, 0, 8, 0);
-
- return retval;
}
-static int single_byte_boolean_helper(struct mpsse_ctx *ctx, bool var, uint8_t val_if_true,
+static void single_byte_boolean_helper(struct mpsse_ctx *ctx, bool var, uint8_t val_if_true,
uint8_t val_if_false)
{
- int retval = ERROR_OK;
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
if (buffer_write_space(ctx) < 1)
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, var ? val_if_true : val_if_false);
-
- return retval;
}
-int mpsse_loopback_config(struct mpsse_ctx *ctx, bool enable)
+void mpsse_loopback_config(struct mpsse_ctx *ctx, bool enable)
{
LOG_DEBUG("%s", enable ? "on" : "off");
- return single_byte_boolean_helper(ctx, enable, 0x84, 0x85);
+ single_byte_boolean_helper(ctx, enable, 0x84, 0x85);
}
-int mpsse_set_divisor(struct mpsse_ctx *ctx, uint16_t divisor)
+void mpsse_set_divisor(struct mpsse_ctx *ctx, uint16_t divisor)
{
LOG_DEBUG("%d", divisor);
- int retval = ERROR_OK;
+
+ if (ctx->retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring command due to previous error");
+ return;
+ }
if (buffer_write_space(ctx) < 3)
- retval = mpsse_flush(ctx);
+ ctx->retval = mpsse_flush(ctx);
buffer_write_byte(ctx, 0x86);
buffer_write_byte(ctx, divisor & 0xff);
buffer_write_byte(ctx, divisor >> 8);
-
- return retval;
}
int mpsse_divide_by_5_config(struct mpsse_ctx *ctx, bool enable)
return ERROR_FAIL;
LOG_DEBUG("%s", enable ? "on" : "off");
+ single_byte_boolean_helper(ctx, enable, 0x8b, 0x8a);
- return single_byte_boolean_helper(ctx, enable, 0x8b, 0x8a);
+ return ERROR_OK;
}
int mpsse_rtck_config(struct mpsse_ctx *ctx, bool enable)
return ERROR_FAIL;
LOG_DEBUG("%s", enable ? "on" : "off");
+ single_byte_boolean_helper(ctx, enable, 0x96, 0x97);
- return single_byte_boolean_helper(ctx, enable, 0x96, 0x97);
+ return ERROR_OK;
}
int mpsse_set_frequency(struct mpsse_ctx *ctx, int frequency)
mpsse_rtck_config(ctx, false); /* just try */
- if (frequency > 60000000 / 2 / 65536 && mpsse_is_high_speed(ctx)) {
- int retval = mpsse_divide_by_5_config(ctx, false);
- if (retval != ERROR_OK)
- return retval;
+ if (frequency > 60000000 / 2 / 65536 && mpsse_divide_by_5_config(ctx, false) == ERROR_OK) {
base_clock = 60000000;
} else {
mpsse_divide_by_5_config(ctx, true); /* just try */
divisor = 65535;
assert(divisor >= 0);
- int retval = mpsse_set_divisor(ctx, divisor);
- if (retval != ERROR_OK)
- return retval;
+ mpsse_set_divisor(ctx, divisor);
frequency = base_clock / 2 / (1 + divisor);
LOG_DEBUG("actually %d Hz", frequency);
static LIBUSB_CALL void read_cb(struct libusb_transfer *transfer)
{
- struct transfer_result *res = (struct transfer_result *)transfer->user_data;
+ struct transfer_result *res = transfer->user_data;
struct mpsse_ctx *ctx = res->ctx;
unsigned packet_size = ctx->max_packet_size;
}
}
- DEBUG_IO("raw chunk %d, transferred %d of %d", transfer->actual_length, res->transferred,
+ LOG_DEBUG_IO("raw chunk %d, transferred %d of %d", transfer->actual_length, res->transferred,
ctx->read_count);
if (!res->done)
static LIBUSB_CALL void write_cb(struct libusb_transfer *transfer)
{
- struct transfer_result *res = (struct transfer_result *)transfer->user_data;
+ struct transfer_result *res = transfer->user_data;
struct mpsse_ctx *ctx = res->ctx;
res->transferred += transfer->actual_length;
- DEBUG_IO("transferred %d of %d", res->transferred, ctx->write_count);
+ LOG_DEBUG_IO("transferred %d of %d", res->transferred, ctx->write_count);
DEBUG_PRINT_BUF(transfer->buffer, transfer->actual_length);
int mpsse_flush(struct mpsse_ctx *ctx)
{
- DEBUG_IO("write %d%s, read %d", ctx->write_count, ctx->read_count ? "+1" : "",
+ int retval = ctx->retval;
+
+ if (retval != ERROR_OK) {
+ LOG_DEBUG_IO("Ignoring flush due to previous error");
+ assert(ctx->write_count == 0 && ctx->read_count == 0);
+ ctx->retval = ERROR_OK;
+ return retval;
+ }
+
+ LOG_DEBUG_IO("write %d%s, read %d", ctx->write_count, ctx->read_count ? "+1" : "",
ctx->read_count);
assert(ctx->write_count > 0 || ctx->read_count == 0); /* No read data without write data */
- int retval = ERROR_OK;
if (ctx->write_count == 0)
return retval;
if (ctx->read_count) {
buffer_write_byte(ctx, 0x87); /* SEND_IMMEDIATE */
read_result.done = false;
- read_transfer = libusb_alloc_transfer(0);
- libusb_fill_bulk_transfer(read_transfer, ctx->usb_dev, ctx->in_ep, ctx->read_chunk,
- ctx->read_chunk_size, read_cb, &read_result,
- ctx->usb_read_timeout);
- retval = libusb_submit_transfer(read_transfer);
+ /* delay read transaction to ensure the FTDI chip can support us with data
+ immediately after processing the MPSSE commands in the write transaction */
}
struct transfer_result write_result = { .ctx = ctx, .done = false };
libusb_fill_bulk_transfer(write_transfer, ctx->usb_dev, ctx->out_ep, ctx->write_buffer,
ctx->write_count, write_cb, &write_result, ctx->usb_write_timeout);
retval = libusb_submit_transfer(write_transfer);
+ if (retval != LIBUSB_SUCCESS)
+ goto error_check;
+
+ if (ctx->read_count) {
+ read_transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(read_transfer, ctx->usb_dev, ctx->in_ep, ctx->read_chunk,
+ ctx->read_chunk_size, read_cb, &read_result,
+ ctx->usb_read_timeout);
+ retval = libusb_submit_transfer(read_transfer);
+ if (retval != LIBUSB_SUCCESS)
+ goto error_check;
+ }
/* Polling loop, more or less taken from libftdi */
+ int64_t start = timeval_ms();
+ int64_t warn_after = 2000;
while (!write_result.done || !read_result.done) {
- retval = libusb_handle_events(ctx->usb_ctx);
+ struct timeval timeout_usb;
+
+ timeout_usb.tv_sec = 1;
+ timeout_usb.tv_usec = 0;
+
+ retval = libusb_handle_events_timeout_completed(ctx->usb_ctx, &timeout_usb, NULL);
keep_alive();
- if (retval != LIBUSB_SUCCESS && retval != LIBUSB_ERROR_INTERRUPTED) {
+ if (retval == LIBUSB_ERROR_NO_DEVICE || retval == LIBUSB_ERROR_INTERRUPTED)
+ break;
+
+ if (retval != LIBUSB_SUCCESS) {
libusb_cancel_transfer(write_transfer);
if (read_transfer)
libusb_cancel_transfer(read_transfer);
- while (!write_result.done || !read_result.done)
- if (libusb_handle_events(ctx->usb_ctx) != LIBUSB_SUCCESS)
+ while (!write_result.done || !read_result.done) {
+ retval = libusb_handle_events_timeout_completed(ctx->usb_ctx,
+ &timeout_usb, NULL);
+ if (retval != LIBUSB_SUCCESS)
break;
+ }
+ }
+
+ int64_t now = timeval_ms();
+ if (now - start > warn_after) {
+ LOG_WARNING("Haven't made progress in mpsse_flush() for %" PRId64
+ "ms.", now - start);
+ warn_after *= 2;
}
}
+error_check:
if (retval != LIBUSB_SUCCESS) {
- LOG_ERROR("libusb_handle_events() failed with %d", retval);
+ LOG_ERROR("libusb_handle_events() failed with %s", libusb_error_name(retval));
retval = ERROR_FAIL;
} else if (write_result.transferred < ctx->write_count) {
LOG_ERROR("ftdi device did not accept all data: %d, tried %d",
Code Review / openocd.git / blobdiff