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