src/hardware/dslogic/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include "protocol.h"
  23 #include "dslogic.h"
  24 #include <math.h>
  25
  26 static const struct dslogic_profile supported_device[] = {
  27         /* DreamSourceLab DSLogic (before FW upload) */
  28         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  29                 "dreamsourcelab-dslogic-fx2.fw",
  30                 0, NULL, NULL},
  31         /* DreamSourceLab DSLogic (after FW upload) */
  32         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  33                 "dreamsourcelab-dslogic-fx2.fw",
  34                 0, "DreamSourceLab", "DSLogic"},
  35
  36         /* DreamSourceLab DSCope (before FW upload) */
  37         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  38                 "dreamsourcelab-dscope-fx2.fw",
  39                 0, NULL, NULL},
  40         /* DreamSourceLab DSCope (after FW upload) */
  41         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  42                 "dreamsourcelab-dscope-fx2.fw",
  43                 0, "DreamSourceLab", "DSCope"},
  44
  45         /* DreamSourceLab DSLogic Pro (before FW upload) */
  46         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  47                 "dreamsourcelab-dslogic-pro-fx2.fw",
  48                 0, NULL, NULL},
  49         /* DreamSourceLab DSLogic Pro (after FW upload) */
  50         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  51                 "dreamsourcelab-dslogic-pro-fx2.fw",
  52                 0, "DreamSourceLab", "DSLogic"},
  53
  54         /* DreamSourceLab DSLogic Plus (before FW upload) */
  55         { 0x2a0e, 0x0020, "DreamSourceLab", "DSLogic Plus", NULL,
  56                 "dreamsourcelab-dslogic-plus-fx2.fw",
  57                 0, NULL, NULL},
  58         /* DreamSourceLab DSLogic Plus (after FW upload) */
  59         { 0x2a0e, 0x0020, "DreamSourceLab", "DSLogic Plus", NULL,
  60                 "dreamsourcelab-dslogic-plus-fx2.fw",
  61                 0, "DreamSourceLab", "DSLogic"},
  62
  63         /* DreamSourceLab DSLogic Basic (before FW upload) */
  64         { 0x2a0e, 0x0021, "DreamSourceLab", "DSLogic Basic", NULL,
  65                 "dreamsourcelab-dslogic-basic-fx2.fw",
  66                 0, NULL, NULL},
  67         /* DreamSourceLab DSLogic Basic (after FW upload) */
  68         { 0x2a0e, 0x0021, "DreamSourceLab", "DSLogic Basic", NULL,
  69                 "dreamsourcelab-dslogic-basic-fx2.fw",
  70                 0, "DreamSourceLab", "DSLogic"},
  71
  72         ALL_ZERO
  73 };
  74
  75 static const uint32_t drvopts[] = {
  76         SR_CONF_LOGIC_ANALYZER,
  77 };
  78
  79 static const uint32_t scanopts[] = {
  80         SR_CONF_CONN,
  81 };
  82
  83 static const uint32_t devopts[] = {
  84         SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
  85         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
  86         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  87         SR_CONF_CONN | SR_CONF_GET,
  88         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  89         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
  90         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
  91         SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
  92         SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
  93 };
  94
  95 /* Names assigned to available edge slope choices. */
  96 static const char *const signal_edge_names[] = {
  97         [DS_EDGE_RISING] = "rising",
  98         [DS_EDGE_FALLING] = "falling",
  99 };
 100
 101 static const struct {
 102         int range;
 103         gdouble low;
 104         gdouble high;
 105 } volt_thresholds[] = {
 106         { DS_VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
 107         { DS_VOLTAGE_RANGE_5_V, 1.4, 3.6 },
 108 };
 109
 110 static const uint64_t samplerates[] = {
 111         SR_KHZ(10),
 112         SR_KHZ(20),
 113         SR_KHZ(50),
 114         SR_KHZ(100),
 115         SR_KHZ(200),
 116         SR_KHZ(500),
 117         SR_MHZ(1),
 118         SR_MHZ(2),
 119         SR_MHZ(5),
 120         SR_MHZ(10),
 121         SR_MHZ(20),
 122         SR_MHZ(25),
 123         SR_MHZ(50),
 124         SR_MHZ(100),
 125         SR_MHZ(200),
 126         SR_MHZ(400),
 127 };
 128
 129 static gboolean is_plausible(const struct libusb_device_descriptor *des)
 130 {
 131         int i;
 132
 133         for (i = 0; supported_device[i].vid; i++) {
 134                 if (des->idVendor != supported_device[i].vid)
 135                         continue;
 136                 if (des->idProduct == supported_device[i].pid)
 137                         return TRUE;
 138         }
 139
 140         return FALSE;
 141 }
 142
 143 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 144 {
 145         struct drv_context *drvc;
 146         struct dev_context *devc;
 147         struct sr_dev_inst *sdi;
 148         struct sr_usb_dev_inst *usb;
 149         struct sr_channel *ch;
 150         struct sr_channel_group *cg;
 151         struct sr_config *src;
 152         const struct dslogic_profile *prof;
 153         GSList *l, *devices, *conn_devices;
 154         gboolean has_firmware;
 155         struct libusb_device_descriptor des;
 156         libusb_device **devlist;
 157         struct libusb_device_handle *hdl;
 158         int ret, i, j;
 159         const char *conn;
 160         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 161         char channel_name[16];
 162
 163         drvc = di->context;
 164
 165         conn = NULL;
 166         for (l = options; l; l = l->next) {
 167                 src = l->data;
 168                 switch (src->key) {
 169                 case SR_CONF_CONN:
 170                         conn = g_variant_get_string(src->data, NULL);
 171                         break;
 172                 }
 173         }
 174         if (conn)
 175                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 176         else
 177                 conn_devices = NULL;
 178
 179         /* Find all dslogic compatible devices and upload firmware to them. */
 180         devices = NULL;
 181         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 182         for (i = 0; devlist[i]; i++) {
 183                 if (conn) {
 184                         usb = NULL;
 185                         for (l = conn_devices; l; l = l->next) {
 186                                 usb = l->data;
 187                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 188                                         && usb->address == libusb_get_device_address(devlist[i]))
 189                                         break;
 190                         }
 191                         if (!l)
 192                                 /* This device matched none of the ones that
 193                                  * matched the conn specification. */
 194                                 continue;
 195                 }
 196
 197                 libusb_get_device_descriptor( devlist[i], &des);
 198
 199                 if (!is_plausible(&des))
 200                         continue;
 201
 202                 if ((ret = libusb_open(devlist[i], &hdl)) < 0) {
 203                         sr_warn("Failed to open potential device with "
 204                                 "VID:PID %04x:%04x: %s.", des.idVendor,
 205                                 des.idProduct, libusb_error_name(ret));
 206                         continue;
 207                 }
 208
 209                 if (des.iManufacturer == 0) {
 210                         manufacturer[0] = '\0';
 211                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 212                                 des.iManufacturer, (unsigned char *) manufacturer,
 213                                 sizeof(manufacturer))) < 0) {
 214                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 215                                 libusb_error_name(ret));
 216                         continue;
 217                 }
 218
 219                 if (des.iProduct == 0) {
 220                         product[0] = '\0';
 221                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 222                                 des.iProduct, (unsigned char *) product,
 223                                 sizeof(product))) < 0) {
 224                         sr_warn("Failed to get product string descriptor: %s.",
 225                                 libusb_error_name(ret));
 226                         continue;
 227                 }
 228
 229                 if (des.iSerialNumber == 0) {
 230                         serial_num[0] = '\0';
 231                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 232                                 des.iSerialNumber, (unsigned char *) serial_num,
 233                                 sizeof(serial_num))) < 0) {
 234                         sr_warn("Failed to get serial number string descriptor: %s.",
 235                                 libusb_error_name(ret));
 236                         continue;
 237                 }
 238
 239                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 240
 241                 libusb_close(hdl);
 242
 243                 prof = NULL;
 244                 for (j = 0; supported_device[j].vid; j++) {
 245                         if (des.idVendor == supported_device[j].vid &&
 246                                         des.idProduct == supported_device[j].pid &&
 247                                         (!supported_device[j].usb_manufacturer ||
 248                                          !strcmp(manufacturer, supported_device[j].usb_manufacturer)) &&
 249                                         (!supported_device[j].usb_product ||
 250                                          !strcmp(product, supported_device[j].usb_product))) {
 251                                 prof = &supported_device[j];
 252                                 break;
 253                         }
 254                 }
 255
 256                 /* Skip if the device was not found. */
 257                 if (!prof)
 258                         continue;
 259
 260                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 261                 sdi->status = SR_ST_INITIALIZING;
 262                 sdi->vendor = g_strdup(prof->vendor);
 263                 sdi->model = g_strdup(prof->model);
 264                 sdi->version = g_strdup(prof->model_version);
 265                 sdi->serial_num = g_strdup(serial_num);
 266                 sdi->connection_id = g_strdup(connection_id);
 267
 268                 /* Logic channels, all in one channel group. */
 269                 cg = g_malloc0(sizeof(struct sr_channel_group));
 270                 cg->name = g_strdup("Logic");
 271                 for (j = 0; j < 16; j++) {
 272                         sprintf(channel_name, "D%d", j);
 273                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 274                                                 TRUE, channel_name);
 275                         cg->channels = g_slist_append(cg->channels, ch);
 276                 }
 277                 sdi->channel_groups = g_slist_append(NULL, cg);
 278
 279                 devc = dslogic_dev_new();
 280                 devc->profile = prof;
 281                 sdi->priv = devc;
 282                 devices = g_slist_append(devices, sdi);
 283
 284                 devc->samplerates = samplerates;
 285                 devc->num_samplerates = ARRAY_SIZE(samplerates);
 286                 has_firmware = usb_match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 287                                 || usb_match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 288
 289                 if (has_firmware) {
 290                         /* Already has the firmware, so fix the new address. */
 291                         sr_dbg("Found an dslogic device.");
 292                         sdi->status = SR_ST_INACTIVE;
 293                         sdi->inst_type = SR_INST_USB;
 294                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 295                                         libusb_get_device_address(devlist[i]), NULL);
 296                 } else {
 297                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 298                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 299                                 /* Store when this device's FW was updated. */
 300                                 devc->fw_updated = g_get_monotonic_time();
 301                         else
 302                                 sr_err("Firmware upload failed for "
 303                                        "device %d.%d (logical).",
 304                                        libusb_get_bus_number(devlist[i]),
 305                                        libusb_get_device_address(devlist[i]));
 306                         sdi->inst_type = SR_INST_USB;
 307                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 308                                         0xff, NULL);
 309                 }
 310         }
 311         libusb_free_device_list(devlist, 1);
 312         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 313
 314         return std_scan_complete(di, devices);
 315 }
 316
 317 static void clear_dev_context(void *priv)
 318 {
 319         struct dev_context *devc;
 320
 321         devc = priv;
 322         g_free(devc);
 323 }
 324
 325 static int dev_clear(const struct sr_dev_driver *di)
 326 {
 327         return std_dev_clear(di, clear_dev_context);
 328 }
 329
 330 static int dev_open(struct sr_dev_inst *sdi)
 331 {
 332         struct sr_dev_driver *di = sdi->driver;
 333         struct sr_usb_dev_inst *usb;
 334         struct dev_context *devc;
 335         const char *fpga_firmware = NULL;
 336         int ret;
 337         int64_t timediff_us, timediff_ms;
 338
 339         devc = sdi->priv;
 340         usb = sdi->conn;
 341
 342         /*
 343          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 344          * milliseconds for the FX2 to renumerate.
 345          */
 346         ret = SR_ERR;
 347         if (devc->fw_updated > 0) {
 348                 sr_info("Waiting for device to reset.");
 349                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 350                 g_usleep(300 * 1000);
 351                 timediff_ms = 0;
 352                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 353                         if ((ret = dslogic_dev_open(sdi, di)) == SR_OK)
 354                                 break;
 355                         g_usleep(100 * 1000);
 356
 357                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 358                         timediff_ms = timediff_us / 1000;
 359                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 360                 }
 361                 if (ret != SR_OK) {
 362                         sr_err("Device failed to renumerate.");
 363                         return SR_ERR;
 364                 }
 365                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 366         } else {
 367                 sr_info("Firmware upload was not needed.");
 368                 ret = dslogic_dev_open(sdi, di);
 369         }
 370
 371         if (ret != SR_OK) {
 372                 sr_err("Unable to open device.");
 373                 return SR_ERR;
 374         }
 375
 376         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 377         if (ret != 0) {
 378                 switch (ret) {
 379                 case LIBUSB_ERROR_BUSY:
 380                         sr_err("Unable to claim USB interface. Another "
 381                                "program or driver has already claimed it.");
 382                         break;
 383                 case LIBUSB_ERROR_NO_DEVICE:
 384                         sr_err("Device has been disconnected.");
 385                         break;
 386                 default:
 387                         sr_err("Unable to claim interface: %s.",
 388                                libusb_error_name(ret));
 389                         break;
 390                 }
 391
 392                 return SR_ERR;
 393         }
 394
 395         if (!strcmp(devc->profile->model, "DSLogic")) {
 396                 if (devc->voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
 397                         fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
 398                 else
 399                         fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
 400         } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
 401                 fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 402         } else if (!strcmp(devc->profile->model, "DSLogic Plus")){
 403                 fpga_firmware = DSLOGIC_PLUS_FPGA_FIRMWARE;
 404         } else if (!strcmp(devc->profile->model, "DSLogic Basic")){
 405                 fpga_firmware = DSLOGIC_BASIC_FPGA_FIRMWARE;
 406         } else if (!strcmp(devc->profile->model, "DSCope")) {
 407                 fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 408         }
 409
 410         if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
 411                 return ret;
 412
 413         if (devc->cur_samplerate == 0) {
 414                 /* Samplerate hasn't been set; default to the slowest one. */
 415                 devc->cur_samplerate = devc->samplerates[0];
 416         }
 417
 418         return SR_OK;
 419 }
 420
 421 static int dev_close(struct sr_dev_inst *sdi)
 422 {
 423         struct sr_usb_dev_inst *usb;
 424
 425         usb = sdi->conn;
 426
 427         if (!usb->devhdl)
 428                 return SR_ERR;
 429
 430         sr_info("dslogic: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 431                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 432         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 433         libusb_close(usb->devhdl);
 434         usb->devhdl = NULL;
 435         sdi->status = SR_ST_INACTIVE;
 436
 437         return SR_OK;
 438 }
 439
 440 static int config_get(uint32_t key, GVariant **data,
 441         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 442 {
 443         struct dev_context *devc;
 444         struct sr_usb_dev_inst *usb;
 445         GVariant *range[2];
 446         unsigned int i;
 447         char str[128];
 448
 449         (void)cg;
 450
 451         if (!sdi)
 452                 return SR_ERR_ARG;
 453
 454         devc = sdi->priv;
 455
 456         switch (key) {
 457         case SR_CONF_CONN:
 458                 if (!sdi->conn)
 459                         return SR_ERR_ARG;
 460                 usb = sdi->conn;
 461                 if (usb->address == 255)
 462                         /* Device still needs to re-enumerate after firmware
 463                          * upload, so we don't know its (future) address. */
 464                         return SR_ERR;
 465                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 466                 *data = g_variant_new_string(str);
 467                 break;
 468         case SR_CONF_VOLTAGE_THRESHOLD:
 469                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 470                         if (volt_thresholds[i].range != devc->voltage_threshold)
 471                                 continue;
 472                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 473                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 474                         *data = g_variant_new_tuple(range, 2);
 475                         break;
 476                 }
 477                 break;
 478         case SR_CONF_LIMIT_SAMPLES:
 479                 *data = g_variant_new_uint64(devc->limit_samples);
 480                 break;
 481         case SR_CONF_SAMPLERATE:
 482                 *data = g_variant_new_uint64(devc->cur_samplerate);
 483                 break;
 484         case SR_CONF_CAPTURE_RATIO:
 485                 *data = g_variant_new_uint64(devc->capture_ratio);
 486                 break;
 487         case SR_CONF_EXTERNAL_CLOCK:
 488                 *data = g_variant_new_boolean(devc->external_clock);
 489                 break;
 490         case SR_CONF_CONTINUOUS:
 491                 *data = g_variant_new_boolean(devc->continuous_mode);
 492                 break;
 493         case SR_CONF_CLOCK_EDGE:
 494                 i = devc->clock_edge;
 495                 if (i >= ARRAY_SIZE(signal_edge_names))
 496                         return SR_ERR_BUG;
 497                 *data = g_variant_new_string(signal_edge_names[0]);
 498                 break;
 499         default:
 500                 return SR_ERR_NA;
 501         }
 502
 503         return SR_OK;
 504 }
 505
 506 /*
 507  * Helper for mapping a string-typed configuration value to an index
 508  * within a table of possible values.
 509  */
 510 static int lookup_index(GVariant *value, const char *const *table, int len)
 511 {
 512         const char *entry;
 513         int i;
 514
 515         entry = g_variant_get_string(value, NULL);
 516         if (!entry)
 517                 return -1;
 518
 519         /* Linear search is fine for very small tables. */
 520         for (i = 0; i < len; i++) {
 521                 if (strcmp(entry, table[i]) == 0)
 522                         return i;
 523         }
 524
 525         return -1;
 526 }
 527
 528 static int config_set(uint32_t key, GVariant *data,
 529         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 530 {
 531         struct dev_context *devc;
 532         uint64_t arg;
 533         int i, ret;
 534         gdouble low, high;
 535
 536         (void)cg;
 537
 538         if (!sdi)
 539                 return SR_ERR_ARG;
 540
 541         if (sdi->status != SR_ST_ACTIVE)
 542                 return SR_ERR;
 543
 544         devc = sdi->priv;
 545
 546         ret = SR_OK;
 547
 548         switch (key) {
 549         case SR_CONF_SAMPLERATE:
 550                 arg = g_variant_get_uint64(data);
 551                 for (i = 0; i < devc->num_samplerates; i++) {
 552                         if (devc->samplerates[i] == arg) {
 553                                 devc->cur_samplerate = arg;
 554                                 break;
 555                         }
 556                 }
 557                 if (i == devc->num_samplerates)
 558                         ret = SR_ERR_ARG;
 559                 break;
 560         case SR_CONF_LIMIT_SAMPLES:
 561                 devc->limit_samples = g_variant_get_uint64(data);
 562                 break;
 563         case SR_CONF_CAPTURE_RATIO:
 564                 devc->capture_ratio = g_variant_get_uint64(data);
 565                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 566                 break;
 567         case SR_CONF_VOLTAGE_THRESHOLD:
 568                 g_variant_get(data, "(dd)", &low, &high);
 569                 ret = SR_ERR_ARG;
 570                 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
 571                         if (fabs(volt_thresholds[i].low - low) < 0.1 &&
 572                             fabs(volt_thresholds[i].high - high) < 0.1) {
 573                                 devc->voltage_threshold = volt_thresholds[i].range;
 574                                 break;
 575                         }
 576                 }
 577                 if (!strcmp(devc->profile->model, "DSLogic")) {
 578                         if (devc->voltage_threshold == DS_VOLTAGE_RANGE_5_V)
 579                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
 580                         else
 581                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
 582                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 583                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
 584                 } else if (!strcmp(devc->profile->model, "DSLogic Plus")) {
 585                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PLUS_FPGA_FIRMWARE);
 586                 } else if (!strcmp(devc->profile->model, "DSLogic Basic")) {
 587                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_BASIC_FPGA_FIRMWARE);
 588                 }
 589                 break;
 590         case SR_CONF_EXTERNAL_CLOCK:
 591                 devc->external_clock = g_variant_get_boolean(data);
 592                 break;
 593         case SR_CONF_CONTINUOUS:
 594                 devc->continuous_mode = g_variant_get_boolean(data);
 595                 break;
 596         case SR_CONF_CLOCK_EDGE:
 597                 i = lookup_index(data, signal_edge_names,
 598                                    ARRAY_SIZE(signal_edge_names));
 599                 if (i < 0)
 600                         return SR_ERR_ARG;
 601                 devc->clock_edge = i;
 602                 break;
 603         default:
 604                 ret = SR_ERR_NA;
 605         }
 606
 607         return ret;
 608 }
 609
 610 static int config_list(uint32_t key, GVariant **data,
 611         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 612 {
 613         struct dev_context *devc;
 614         GVariant *gvar, *range[2];
 615         GVariantBuilder gvb;
 616         unsigned int i;
 617
 618         (void)cg;
 619
 620         switch (key) {
 621         case SR_CONF_SCAN_OPTIONS:
 622                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 623                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 624                 break;
 625         case SR_CONF_DEVICE_OPTIONS:
 626                 if (!sdi) {
 627                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 628                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 629                 } else {
 630                         devc = sdi->priv;
 631                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 632                                                           devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 633                 }
 634                 break;
 635         case SR_CONF_VOLTAGE_THRESHOLD:
 636                 if (!sdi->priv)
 637                         return SR_ERR_ARG;
 638                 devc = sdi->priv;
 639                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 640                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 641                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 642                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 643                         gvar = g_variant_new_tuple(range, 2);
 644                         g_variant_builder_add_value(&gvb, gvar);
 645                 }
 646                 *data = g_variant_builder_end(&gvb);
 647                 break;
 648         case SR_CONF_SAMPLERATE:
 649                 devc = sdi->priv;
 650                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 651                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 652                                 devc->num_samplerates, sizeof(uint64_t));
 653                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 654                 *data = g_variant_builder_end(&gvb);
 655                 break;
 656         case SR_CONF_CLOCK_EDGE:
 657                 *data = g_variant_new_strv(signal_edge_names,
 658                         ARRAY_SIZE(signal_edge_names));
 659                 break;
 660         default:
 661                 return SR_ERR_NA;
 662         }
 663
 664         return SR_OK;
 665 }
 666
 667 static int receive_data(int fd, int revents, void *cb_data)
 668 {
 669         struct timeval tv;
 670         struct drv_context *drvc;
 671
 672         (void)fd;
 673         (void)revents;
 674
 675         drvc = (struct drv_context *)cb_data;
 676
 677         tv.tv_sec = tv.tv_usec = 0;
 678         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 679
 680         return TRUE;
 681 }
 682
 683 static int start_transfers(const struct sr_dev_inst *sdi)
 684 {
 685         struct dev_context *devc;
 686         struct sr_usb_dev_inst *usb;
 687         struct libusb_transfer *transfer;
 688         unsigned int i, num_transfers;
 689         int timeout, ret;
 690         unsigned char *buf;
 691         size_t size;
 692
 693         devc = sdi->priv;
 694         usb = sdi->conn;
 695
 696         devc->sent_samples = 0;
 697         devc->acq_aborted = FALSE;
 698         devc->empty_transfer_count = 0;
 699         devc->trigger_fired = TRUE;
 700
 701         num_transfers = dslogic_get_number_of_transfers(devc);
 702
 703         if (devc->cur_samplerate == SR_MHZ(100))
 704                 num_transfers = 16;
 705         else if (devc->cur_samplerate == SR_MHZ(200))
 706                 num_transfers = 8;
 707         else if (devc->cur_samplerate == SR_MHZ(400))
 708                 num_transfers = 4;
 709
 710         size = dslogic_get_buffer_size(devc);
 711         devc->submitted_transfers = 0;
 712
 713         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 714         if (!devc->transfers) {
 715                 sr_err("USB transfers malloc failed.");
 716                 return SR_ERR_MALLOC;
 717         }
 718
 719         timeout = dslogic_get_timeout(devc);
 720         devc->num_transfers = num_transfers;
 721         for (i = 0; i < num_transfers; i++) {
 722                 if (!(buf = g_try_malloc(size))) {
 723                         sr_err("USB transfer buffer malloc failed.");
 724                         return SR_ERR_MALLOC;
 725                 }
 726                 transfer = libusb_alloc_transfer(0);
 727                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 728                                 6 | LIBUSB_ENDPOINT_IN, buf, size,
 729                                 dslogic_receive_transfer, (void *)sdi, timeout);
 730                 sr_info("submitting transfer: %d", i);
 731                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 732                         sr_err("Failed to submit transfer: %s.",
 733                                libusb_error_name(ret));
 734                         libusb_free_transfer(transfer);
 735                         g_free(buf);
 736                         dslogic_abort_acquisition(devc);
 737                         return SR_ERR;
 738                 }
 739                 devc->transfers[i] = transfer;
 740                 devc->submitted_transfers++;
 741         }
 742
 743         std_session_send_df_header(sdi);
 744
 745         return SR_OK;
 746 }
 747
 748 static void LIBUSB_CALL trigger_receive(struct libusb_transfer *transfer)
 749 {
 750         const struct sr_dev_inst *sdi;
 751         struct dslogic_trigger_pos *tpos;
 752         struct dev_context *devc;
 753
 754         sdi = transfer->user_data;
 755         devc = sdi->priv;
 756         if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
 757                 sr_dbg("Trigger transfer canceled.");
 758                 /* Terminate session. */
 759                 std_session_send_df_end(sdi);
 760                 usb_source_remove(sdi->session, devc->ctx);
 761                 devc->num_transfers = 0;
 762                 g_free(devc->transfers);
 763         } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 764                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 765                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 766                 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
 767                         tpos->ram_saddr, tpos->remain_cnt);
 768                 devc->trigger_pos = tpos->real_pos;
 769                 g_free(tpos);
 770                 start_transfers(sdi);
 771         }
 772         libusb_free_transfer(transfer);
 773 }
 774
 775 static int trigger_request(const struct sr_dev_inst *sdi)
 776 {
 777         struct sr_usb_dev_inst *usb;
 778         struct libusb_transfer *transfer;
 779         struct dslogic_trigger_pos *tpos;
 780         struct dev_context *devc;
 781         int ret;
 782
 783         usb = sdi->conn;
 784         devc = sdi->priv;
 785
 786         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 787                 return ret;
 788
 789         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 790                 return ret;
 791
 792         /* If this is a DSLogic Pro, set the voltage threshold. */
 793         if (!strcmp(devc->profile->model, "DSLogic Pro")){
 794                 if (devc->voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
 795                         dslogic_set_vth(sdi, 1.4);
 796                 } else {
 797                         dslogic_set_vth(sdi, 3.3);
 798                 }
 799         }
 800
 801         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 802                 return ret;
 803
 804         sr_dbg("Getting trigger.");
 805         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 806         transfer = libusb_alloc_transfer(0);
 807         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 808                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 809                         trigger_receive, (void *)sdi, 0);
 810         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 811                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 812                 libusb_free_transfer(transfer);
 813                 g_free(tpos);
 814                 return SR_ERR;
 815         }
 816
 817         devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
 818         if (!devc->transfers) {
 819                 sr_err("USB trigger_pos transfer malloc failed.");
 820                 return SR_ERR_MALLOC;
 821         }
 822         devc->num_transfers = 1;
 823         devc->submitted_transfers++;
 824         devc->transfers[0] = transfer;
 825
 826         return ret;
 827 }
 828
 829 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 830 {
 831         struct sr_dev_driver *di;
 832         struct drv_context *drvc;
 833         struct dev_context *devc;
 834         int timeout;
 835
 836         if (sdi->status != SR_ST_ACTIVE)
 837                 return SR_ERR_DEV_CLOSED;
 838
 839         di = sdi->driver;
 840         drvc = di->context;
 841         devc = sdi->priv;
 842
 843         devc->ctx = drvc->sr_ctx;
 844         devc->sent_samples = 0;
 845         devc->empty_transfer_count = 0;
 846         devc->acq_aborted = FALSE;
 847
 848         timeout = dslogic_get_timeout(devc);
 849         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
 850
 851         trigger_request(sdi);
 852
 853         return SR_OK;
 854 }
 855
 856 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
 857 {
 858         dslogic_stop_acquisition(sdi);
 859
 860         dslogic_abort_acquisition(sdi->priv);
 861
 862         return SR_OK;
 863 }
 864
 865 static struct sr_dev_driver dslogic_driver_info = {
 866         .name = "dslogic",
 867         .longname = "DreamSourceLabs DSLogic",
 868         .api_version = 1,
 869         .init = std_init,
 870         .cleanup = std_cleanup,
 871         .scan = scan,
 872         .dev_list = std_dev_list,
 873         .dev_clear = dev_clear,
 874         .config_get = config_get,
 875         .config_set = config_set,
 876         .config_list = config_list,
 877         .dev_open = dev_open,
 878         .dev_close = dev_close,
 879         .dev_acquisition_start = dev_acquisition_start,
 880         .dev_acquisition_stop = dev_acquisition_stop,
 881         .context = NULL,
 882 };
 883 SR_REGISTER_DEV_DRIVER(dslogic_driver_info);