src/hardware/fx2lafw/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
  25 static const struct fx2lafw_profile supported_fx2[] = {
  26         /*
  27          * CWAV USBee AX
  28          * EE Electronics ESLA201A
  29          * ARMFLY AX-Pro
  30          */
  31         { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
  32                 "fx2lafw-cwav-usbeeax.fw",
  33                 0, NULL, NULL},
  34         /*
  35          * CWAV USBee DX
  36          * XZL-Studio DX
  37          */
  38         { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
  39                 "fx2lafw-cwav-usbeedx.fw",
  40                 DEV_CAPS_16BIT, NULL, NULL },
  41
  42         /*
  43          * CWAV USBee SX
  44          */
  45         { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
  46                 "fx2lafw-cwav-usbeesx.fw",
  47                 0, NULL, NULL},
  48
  49         /* DreamSourceLab DSLogic (before FW upload) */
  50         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  51                 "dreamsourcelab-dslogic-fx2.fw",
  52                 DEV_CAPS_16BIT, NULL, NULL},
  53         /* DreamSourceLab DSLogic (after FW upload) */
  54         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  55                 "dreamsourcelab-dslogic-fx2.fw",
  56                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  57
  58         /* DreamSourceLab DSCope (before FW upload) */
  59         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  60                 "dreamsourcelab-dscope-fx2.fw",
  61                 DEV_CAPS_16BIT, NULL, NULL},
  62         /* DreamSourceLab DSCope (after FW upload) */
  63         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  64                 "dreamsourcelab-dscope-fx2.fw",
  65                 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
  66
  67         /* DreamSourceLab DSLogic Pro (before FW upload) */
  68         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  69                 "dreamsourcelab-dslogic-pro-fx2.fw",
  70                 DEV_CAPS_16BIT, NULL, NULL},
  71         /* DreamSourceLab DSLogic Pro (after FW upload) */
  72         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  73                 "dreamsourcelab-dslogic-pro-fx2.fw",
  74                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  75
  76         /*
  77          * Saleae Logic
  78          * EE Electronics ESLA100
  79          * Robomotic MiniLogic
  80          * Robomotic BugLogic 3
  81          */
  82         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  83                 "fx2lafw-saleae-logic.fw",
  84                 0, NULL, NULL},
  85
  86         /*
  87          * Default Cypress FX2 without EEPROM, e.g.:
  88          * Lcsoft Mini Board
  89          * Braintechnology USB Interface V2.x
  90          */
  91         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
  92                 "fx2lafw-cypress-fx2.fw",
  93                 DEV_CAPS_16BIT, NULL, NULL },
  94
  95         /*
  96          * Braintechnology USB-LPS
  97          */
  98         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
  99                 "fx2lafw-braintechnology-usb-lps.fw",
 100                 DEV_CAPS_16BIT, NULL, NULL },
 101
 102         /*
 103          * sigrok FX2 based 8-channel logic analyzer
 104          */
 105         { 0x1d50, 0x608c, "sigrok", "FX2 LA (8ch)", NULL,
 106                 "fx2lafw-sigrok-fx2-8ch.fw",
 107                 0, NULL, NULL},
 108
 109         /*
 110          * sigrok FX2 based 16-channel logic analyzer
 111          */
 112         { 0x1d50, 0x608d, "sigrok", "FX2 LA (16ch)", NULL,
 113                 "fx2lafw-sigrok-fx2-16ch.fw",
 114                 DEV_CAPS_16BIT, NULL, NULL },
 115
 116         ALL_ZERO
 117 };
 118
 119 static const uint32_t drvopts[] = {
 120         SR_CONF_LOGIC_ANALYZER,
 121 };
 122
 123 static const uint32_t scanopts[] = {
 124         SR_CONF_CONN,
 125 };
 126
 127 static const uint32_t devopts[] = {
 128         SR_CONF_CONTINUOUS | SR_CONF_SET,
 129         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 130         SR_CONF_CONN | SR_CONF_GET,
 131         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 132         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 133         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 134 };
 135
 136 static const char *channel_names[] = {
 137         "0", "1", "2", "3", "4", "5", "6", "7",
 138         "8", "9", "10", "11", "12", "13", "14", "15",
 139 };
 140
 141 static const int32_t soft_trigger_matches[] = {
 142         SR_TRIGGER_ZERO,
 143         SR_TRIGGER_ONE,
 144         SR_TRIGGER_RISING,
 145         SR_TRIGGER_FALLING,
 146         SR_TRIGGER_EDGE,
 147 };
 148
 149 static const uint64_t samplerates[] = {
 150         SR_KHZ(20),
 151         SR_KHZ(25),
 152         SR_KHZ(50),
 153         SR_KHZ(100),
 154         SR_KHZ(200),
 155         SR_KHZ(250),
 156         SR_KHZ(500),
 157         SR_MHZ(1),
 158         SR_MHZ(2),
 159         SR_MHZ(3),
 160         SR_MHZ(4),
 161         SR_MHZ(6),
 162         SR_MHZ(8),
 163         SR_MHZ(12),
 164         SR_MHZ(16),
 165         SR_MHZ(24),
 166 };
 167
 168 static const uint64_t dslogic_samplerates[] = {
 169         SR_KHZ(10),
 170         SR_KHZ(20),
 171         SR_KHZ(50),
 172         SR_KHZ(100),
 173         SR_KHZ(200),
 174         SR_KHZ(500),
 175         SR_MHZ(1),
 176         SR_MHZ(2),
 177         SR_MHZ(5),
 178         SR_MHZ(10),
 179         SR_MHZ(20),
 180         SR_MHZ(25),
 181         SR_MHZ(50),
 182         SR_MHZ(100),
 183         SR_MHZ(200),
 184         SR_MHZ(400),
 185 };
 186
 187 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 188
 189 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 190 {
 191         return std_init(sr_ctx, di, LOG_PREFIX);
 192 }
 193
 194 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 195 {
 196         struct drv_context *drvc;
 197         struct dev_context *devc;
 198         struct sr_dev_inst *sdi;
 199         struct sr_usb_dev_inst *usb;
 200         struct sr_config *src;
 201         const struct fx2lafw_profile *prof;
 202         GSList *l, *devices, *conn_devices;
 203         gboolean has_firmware;
 204         struct libusb_device_descriptor des;
 205         libusb_device **devlist;
 206         struct libusb_device_handle *hdl;
 207         int num_logic_channels, ret, i, j;
 208         const char *conn;
 209         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 210
 211         drvc = di->context;
 212
 213         conn = NULL;
 214         for (l = options; l; l = l->next) {
 215                 src = l->data;
 216                 switch (src->key) {
 217                 case SR_CONF_CONN:
 218                         conn = g_variant_get_string(src->data, NULL);
 219                         break;
 220                 }
 221         }
 222         if (conn)
 223                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 224         else
 225                 conn_devices = NULL;
 226
 227         /* Find all fx2lafw compatible devices and upload firmware to them. */
 228         devices = NULL;
 229         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 230         for (i = 0; devlist[i]; i++) {
 231                 if (conn) {
 232                         usb = NULL;
 233                         for (l = conn_devices; l; l = l->next) {
 234                                 usb = l->data;
 235                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 236                                         && usb->address == libusb_get_device_address(devlist[i]))
 237                                         break;
 238                         }
 239                         if (!l)
 240                                 /* This device matched none of the ones that
 241                                  * matched the conn specification. */
 242                                 continue;
 243                 }
 244
 245                 libusb_get_device_descriptor( devlist[i], &des);
 246
 247                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 248                         continue;
 249
 250                 if (des.iManufacturer == 0) {
 251                         manufacturer[0] = '\0';
 252                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 253                                 des.iManufacturer, (unsigned char *) manufacturer,
 254                                 sizeof(manufacturer))) < 0) {
 255                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 256                                 libusb_error_name(ret));
 257                         continue;
 258                 }
 259
 260                 if (des.iProduct == 0) {
 261                         product[0] = '\0';
 262                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 263                                 des.iProduct, (unsigned char *) product,
 264                                 sizeof(product))) < 0) {
 265                         sr_warn("Failed to get product string descriptor: %s.",
 266                                 libusb_error_name(ret));
 267                         continue;
 268                 }
 269
 270                 if (des.iSerialNumber == 0) {
 271                         serial_num[0] = '\0';
 272                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 273                                 des.iSerialNumber, (unsigned char *) serial_num,
 274                                 sizeof(serial_num))) < 0) {
 275                         sr_warn("Failed to get serial number string descriptor: %s.",
 276                                 libusb_error_name(ret));
 277                         continue;
 278                 }
 279
 280                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 281
 282                 libusb_close(hdl);
 283
 284                 prof = NULL;
 285                 for (j = 0; supported_fx2[j].vid; j++) {
 286                         if (des.idVendor == supported_fx2[j].vid &&
 287                                         des.idProduct == supported_fx2[j].pid &&
 288                                         (!supported_fx2[j].usb_manufacturer ||
 289                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 290                                         (!supported_fx2[j].usb_manufacturer ||
 291                                          !strcmp(product, supported_fx2[j].usb_product))) {
 292                                 prof = &supported_fx2[j];
 293                                 break;
 294                         }
 295                 }
 296
 297                 /* Skip if the device was not found. */
 298                 if (!prof)
 299                         continue;
 300
 301                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 302                 sdi->status = SR_ST_INITIALIZING;
 303                 sdi->vendor = g_strdup(prof->vendor);
 304                 sdi->model = g_strdup(prof->model);
 305                 sdi->version = g_strdup(prof->model_version);
 306                 sdi->driver = di;
 307                 sdi->serial_num = g_strdup(serial_num);
 308                 sdi->connection_id = g_strdup(connection_id);
 309
 310                 /* Fill in channellist according to this device's profile. */
 311                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 312                 for (j = 0; j < num_logic_channels; j++)
 313                         sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
 314                                         channel_names[j]);
 315
 316                 devc = fx2lafw_dev_new();
 317                 devc->profile = prof;
 318                 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
 319                 sdi->priv = devc;
 320                 drvc->instances = g_slist_append(drvc->instances, sdi);
 321                 devices = g_slist_append(devices, sdi);
 322
 323                 if (!strcmp(prof->model, "DSLogic")
 324                                 || !strcmp(prof->model, "DSLogic Pro")
 325                                 || !strcmp(prof->model, "DSCope")) {
 326                         devc->dslogic = TRUE;
 327                         devc->samplerates = dslogic_samplerates;
 328                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 329                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 330                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 331                 } else {
 332                         devc->dslogic = FALSE;
 333                         devc->samplerates = samplerates;
 334                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 335                         has_firmware = match_manuf_prod(devlist[i],
 336                                         "sigrok", "fx2lafw");
 337                 }
 338
 339                 if (has_firmware) {
 340                         /* Already has the firmware, so fix the new address. */
 341                         sr_dbg("Found an fx2lafw device.");
 342                         sdi->status = SR_ST_INACTIVE;
 343                         sdi->inst_type = SR_INST_USB;
 344                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 345                                         libusb_get_device_address(devlist[i]), NULL);
 346                 } else {
 347                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 348                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 349                                 /* Store when this device's FW was updated. */
 350                                 devc->fw_updated = g_get_monotonic_time();
 351                         else
 352                                 sr_err("Firmware upload failed for "
 353                                        "device %d.%d (logical).",
 354                                        libusb_get_bus_number(devlist[i]),
 355                                        libusb_get_device_address(devlist[i]));
 356                         sdi->inst_type = SR_INST_USB;
 357                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 358                                         0xff, NULL);
 359                 }
 360         }
 361         libusb_free_device_list(devlist, 1);
 362         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 363
 364         return devices;
 365 }
 366
 367 static GSList *dev_list(const struct sr_dev_driver *di)
 368 {
 369         return ((struct drv_context *)(di->context))->instances;
 370 }
 371
 372 static int dev_open(struct sr_dev_inst *sdi)
 373 {
 374         struct sr_dev_driver *di = sdi->driver;
 375         struct sr_usb_dev_inst *usb;
 376         struct dev_context *devc;
 377         const char *fpga_firmware = NULL;
 378         int ret;
 379         int64_t timediff_us, timediff_ms;
 380
 381         devc = sdi->priv;
 382         usb = sdi->conn;
 383
 384         /*
 385          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 386          * milliseconds for the FX2 to renumerate.
 387          */
 388         ret = SR_ERR;
 389         if (devc->fw_updated > 0) {
 390                 sr_info("Waiting for device to reset.");
 391                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 392                 g_usleep(300 * 1000);
 393                 timediff_ms = 0;
 394                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 395                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 396                                 break;
 397                         g_usleep(100 * 1000);
 398
 399                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 400                         timediff_ms = timediff_us / 1000;
 401                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 402                 }
 403                 if (ret != SR_OK) {
 404                         sr_err("Device failed to renumerate.");
 405                         return SR_ERR;
 406                 }
 407                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 408         } else {
 409                 sr_info("Firmware upload was not needed.");
 410                 ret = fx2lafw_dev_open(sdi, di);
 411         }
 412
 413         if (ret != SR_OK) {
 414                 sr_err("Unable to open device.");
 415                 return SR_ERR;
 416         }
 417
 418         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 419         if (ret != 0) {
 420                 switch (ret) {
 421                 case LIBUSB_ERROR_BUSY:
 422                         sr_err("Unable to claim USB interface. Another "
 423                                "program or driver has already claimed it.");
 424                         break;
 425                 case LIBUSB_ERROR_NO_DEVICE:
 426                         sr_err("Device has been disconnected.");
 427                         break;
 428                 default:
 429                         sr_err("Unable to claim interface: %s.",
 430                                libusb_error_name(ret));
 431                         break;
 432                 }
 433
 434                 return SR_ERR;
 435         }
 436
 437         if (devc->dslogic) {
 438                 if (!strcmp(devc->profile->model, "DSLogic")) {
 439                         fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
 440                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 441                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 442                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 443                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 444                 }
 445
 446                 if ((ret = dslogic_fpga_firmware_upload(sdi,
 447                                 fpga_firmware)) != SR_OK)
 448                         return ret;
 449         }
 450
 451         if (devc->cur_samplerate == 0) {
 452                 /* Samplerate hasn't been set; default to the slowest one. */
 453                 devc->cur_samplerate = devc->samplerates[0];
 454         }
 455
 456         return SR_OK;
 457 }
 458
 459 static int dev_close(struct sr_dev_inst *sdi)
 460 {
 461         struct sr_usb_dev_inst *usb;
 462
 463         usb = sdi->conn;
 464         if (!usb->devhdl)
 465                 return SR_ERR;
 466
 467         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 468                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 469         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 470         libusb_close(usb->devhdl);
 471         usb->devhdl = NULL;
 472         sdi->status = SR_ST_INACTIVE;
 473
 474         return SR_OK;
 475 }
 476
 477 static int cleanup(const struct sr_dev_driver *di)
 478 {
 479         int ret;
 480         struct drv_context *drvc;
 481
 482         if (!(drvc = di->context))
 483                 return SR_OK;
 484
 485         ret = std_dev_clear(di, NULL);
 486
 487         g_free(drvc);
 488
 489         return ret;
 490 }
 491
 492 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 493                 const struct sr_channel_group *cg)
 494 {
 495         struct dev_context *devc;
 496         struct sr_usb_dev_inst *usb;
 497         char str[128];
 498
 499         (void)cg;
 500
 501         if (!sdi)
 502                 return SR_ERR_ARG;
 503
 504         devc = sdi->priv;
 505
 506         switch (key) {
 507         case SR_CONF_CONN:
 508                 if (!sdi->conn)
 509                         return SR_ERR_ARG;
 510                 usb = sdi->conn;
 511                 if (usb->address == 255)
 512                         /* Device still needs to re-enumerate after firmware
 513                          * upload, so we don't know its (future) address. */
 514                         return SR_ERR;
 515                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 516                 *data = g_variant_new_string(str);
 517                 break;
 518         case SR_CONF_LIMIT_SAMPLES:
 519                 *data = g_variant_new_uint64(devc->limit_samples);
 520                 break;
 521         case SR_CONF_SAMPLERATE:
 522                 *data = g_variant_new_uint64(devc->cur_samplerate);
 523                 break;
 524         case SR_CONF_CAPTURE_RATIO:
 525                 *data = g_variant_new_uint64(devc->capture_ratio);
 526                 break;
 527         default:
 528                 return SR_ERR_NA;
 529         }
 530
 531         return SR_OK;
 532 }
 533
 534 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 535                 const struct sr_channel_group *cg)
 536 {
 537         struct dev_context *devc;
 538         uint64_t arg;
 539         int i, ret;
 540
 541         (void)cg;
 542
 543         if (!sdi)
 544                 return SR_ERR_ARG;
 545
 546         if (sdi->status != SR_ST_ACTIVE)
 547                 return SR_ERR;
 548
 549         devc = sdi->priv;
 550
 551         ret = SR_OK;
 552
 553         switch (key) {
 554         case SR_CONF_SAMPLERATE:
 555                 arg = g_variant_get_uint64(data);
 556                 for (i = 0; i < devc->num_samplerates; i++) {
 557                         if (devc->samplerates[i] == arg) {
 558                                 devc->cur_samplerate = arg;
 559                                 break;
 560                         }
 561                 }
 562                 if (i == devc->num_samplerates)
 563                         ret = SR_ERR_ARG;
 564                 break;
 565         case SR_CONF_LIMIT_SAMPLES:
 566                 devc->limit_samples = g_variant_get_uint64(data);
 567                 break;
 568         case SR_CONF_CAPTURE_RATIO:
 569                 devc->capture_ratio = g_variant_get_uint64(data);
 570                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 571                 break;
 572         default:
 573                 ret = SR_ERR_NA;
 574         }
 575
 576         return ret;
 577 }
 578
 579 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 580                 const struct sr_channel_group *cg)
 581 {
 582         struct dev_context *devc;
 583         GVariant *gvar;
 584         GVariantBuilder gvb;
 585
 586         (void)cg;
 587
 588         switch (key) {
 589         case SR_CONF_SCAN_OPTIONS:
 590                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 591                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 592                 break;
 593         case SR_CONF_DEVICE_OPTIONS:
 594                 if (!sdi)
 595                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 596                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 597                 else
 598                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 599                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 600                 break;
 601         case SR_CONF_SAMPLERATE:
 602                 if (!sdi->priv)
 603                         return SR_ERR_ARG;
 604                 devc = sdi->priv;
 605                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 606                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 607                                 devc->num_samplerates, sizeof(uint64_t));
 608                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 609                 *data = g_variant_builder_end(&gvb);
 610                 break;
 611         case SR_CONF_TRIGGER_MATCH:
 612                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 613                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 614                                 sizeof(int32_t));
 615                 break;
 616         default:
 617                 return SR_ERR_NA;
 618         }
 619
 620         return SR_OK;
 621 }
 622
 623 static int receive_data(int fd, int revents, void *cb_data)
 624 {
 625         struct timeval tv;
 626         struct drv_context *drvc;
 627
 628         (void)fd;
 629         (void)revents;
 630
 631         drvc = (struct drv_context *)cb_data;
 632
 633         tv.tv_sec = tv.tv_usec = 0;
 634         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 635
 636         return TRUE;
 637 }
 638
 639 static int start_transfers(const struct sr_dev_inst *sdi)
 640 {
 641         struct dev_context *devc;
 642         struct sr_usb_dev_inst *usb;
 643         struct sr_trigger *trigger;
 644         struct libusb_transfer *transfer;
 645         unsigned int i, num_transfers;
 646         int endpoint, timeout, ret;
 647         unsigned char *buf;
 648         size_t size;
 649
 650         devc = sdi->priv;
 651         usb = sdi->conn;
 652
 653         devc->sent_samples = 0;
 654         devc->acq_aborted = FALSE;
 655         devc->empty_transfer_count = 0;
 656
 657         if ((trigger = sr_session_trigger_get(sdi->session))) {
 658                 int pre_trigger_samples = 0;
 659                 if (devc->limit_samples > 0)
 660                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 661                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 662                 if (!devc->stl)
 663                         return SR_ERR_MALLOC;
 664                 devc->trigger_fired = FALSE;
 665         } else
 666                 devc->trigger_fired = TRUE;
 667
 668         num_transfers = fx2lafw_get_number_of_transfers(devc);
 669         size = fx2lafw_get_buffer_size(devc);
 670         devc->submitted_transfers = 0;
 671
 672         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 673         if (!devc->transfers) {
 674                 sr_err("USB transfers malloc failed.");
 675                 return SR_ERR_MALLOC;
 676         }
 677
 678         timeout = fx2lafw_get_timeout(devc);
 679         endpoint = devc->dslogic ? 6 : 2;
 680         devc->num_transfers = num_transfers;
 681         for (i = 0; i < num_transfers; i++) {
 682                 if (!(buf = g_try_malloc(size))) {
 683                         sr_err("USB transfer buffer malloc failed.");
 684                         return SR_ERR_MALLOC;
 685                 }
 686                 transfer = libusb_alloc_transfer(0);
 687                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 688                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 689                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 690                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 691                         sr_err("Failed to submit transfer: %s.",
 692                                libusb_error_name(ret));
 693                         libusb_free_transfer(transfer);
 694                         g_free(buf);
 695                         fx2lafw_abort_acquisition(devc);
 696                         return SR_ERR;
 697                 }
 698                 devc->transfers[i] = transfer;
 699                 devc->submitted_transfers++;
 700         }
 701
 702         /* Send header packet to the session bus. */
 703         std_session_send_df_header(sdi, LOG_PREFIX);
 704
 705         return SR_OK;
 706 }
 707
 708 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 709 {
 710         const struct sr_dev_inst *sdi;
 711         struct dslogic_trigger_pos *tpos;
 712
 713         sdi = transfer->user_data;
 714
 715         if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 716                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 717                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 718                 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
 719                 g_free(tpos);
 720                 start_transfers(sdi);
 721         }
 722
 723         libusb_free_transfer(transfer);
 724
 725 }
 726
 727 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 728 {
 729         struct sr_usb_dev_inst *usb;
 730         struct libusb_transfer *transfer;
 731         struct dslogic_trigger_pos *tpos;
 732         int ret;
 733
 734         usb = sdi->conn;
 735
 736         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 737                 return ret;
 738
 739         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 740                 return ret;
 741
 742         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 743                 return ret;
 744
 745         sr_dbg("Getting trigger.");
 746         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 747         transfer = libusb_alloc_transfer(0);
 748         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 749                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 750                         dslogic_trigger_receive, (void *)sdi, 0);
 751         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 752                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 753                 libusb_free_transfer(transfer);
 754                 g_free(tpos);
 755                 return SR_ERR;
 756         }
 757
 758         return ret;
 759 }
 760
 761 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 762 {
 763         struct sr_dev_driver *di;
 764         struct drv_context *drvc;
 765         struct dev_context *devc;
 766         int timeout, ret;
 767
 768         if (sdi->status != SR_ST_ACTIVE)
 769                 return SR_ERR_DEV_CLOSED;
 770
 771         di = sdi->driver;
 772         drvc = di->context;
 773         devc = sdi->priv;
 774
 775         devc->ctx = drvc->sr_ctx;
 776         devc->cb_data = cb_data;
 777         devc->sent_samples = 0;
 778         devc->empty_transfer_count = 0;
 779         devc->acq_aborted = FALSE;
 780
 781         timeout = fx2lafw_get_timeout(devc);
 782         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
 783
 784         if (devc->dslogic) {
 785                 dslogic_trigger_request(sdi);
 786         } else {
 787                 start_transfers(sdi);
 788                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
 789                         fx2lafw_abort_acquisition(devc);
 790                         return ret;
 791                 }
 792         }
 793
 794         return SR_OK;
 795 }
 796
 797 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 798 {
 799         (void)cb_data;
 800
 801         fx2lafw_abort_acquisition(sdi->priv);
 802
 803         return SR_OK;
 804 }
 805
 806 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
 807         .name = "fx2lafw",
 808         .longname = "fx2lafw (generic driver for FX2 based LAs)",
 809         .api_version = 1,
 810         .init = init,
 811         .cleanup = cleanup,
 812         .scan = scan,
 813         .dev_list = dev_list,
 814         .dev_clear = NULL,
 815         .config_get = config_get,
 816         .config_set = config_set,
 817         .config_list = config_list,
 818         .dev_open = dev_open,
 819         .dev_close = dev_close,
 820         .dev_acquisition_start = dev_acquisition_start,
 821         .dev_acquisition_stop = dev_acquisition_stop,
 822         .context = NULL,
 823 };