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 "protocol.h"
  22 #include "dslogic.h"
  23
  24 static const struct fx2lafw_profile supported_fx2[] = {
  25         /*
  26          * CWAV USBee AX
  27          * EE Electronics ESLA201A
  28          * ARMFLY AX-Pro
  29          */
  30         { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
  31                 FIRMWARE_DIR "/fx2lafw-cwav-usbeeax.fw",
  32                 0, NULL, NULL},
  33         /*
  34          * CWAV USBee DX
  35          * XZL-Studio DX
  36          */
  37         { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
  38                 FIRMWARE_DIR "/fx2lafw-cwav-usbeedx.fw",
  39                 DEV_CAPS_16BIT, NULL, NULL },
  40
  41         /*
  42          * CWAV USBee SX
  43          */
  44         { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
  45                 FIRMWARE_DIR "/fx2lafw-cwav-usbeesx.fw",
  46                 0, NULL, NULL},
  47
  48         /* DreamSourceLab DSLogic (before FW upload) */
  49         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  50                 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
  51                 DEV_CAPS_16BIT, NULL, NULL},
  52         /* DreamSourceLab DSLogic (after FW upload) */
  53         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  54                 FIRMWARE_DIR "/dreamsourcelab-dslogic-fx2.fw",
  55                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  56
  57         /* DreamSourceLab DSCope (before FW upload) */
  58         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  59                 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
  60                 DEV_CAPS_16BIT, NULL, NULL},
  61         /* DreamSourceLab DSCope (after FW upload) */
  62         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  63                 FIRMWARE_DIR "/dreamsourcelab-dscope-fx2.fw",
  64                 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
  65
  66         /* DreamSourceLab DSLogic Pro (before FW upload) */
  67         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  68                 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
  69                 DEV_CAPS_16BIT, NULL, NULL},
  70         /* DreamSourceLab DSLogic Pro (after FW upload) */
  71         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  72                 FIRMWARE_DIR "/dreamsourcelab-dslogic-pro-fx2.fw",
  73                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  74
  75         /*
  76          * Saleae Logic
  77          * EE Electronics ESLA100
  78          * Robomotic MiniLogic
  79          * Robomotic BugLogic 3
  80          */
  81         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  82                 FIRMWARE_DIR "/fx2lafw-saleae-logic.fw",
  83                 0, NULL, NULL},
  84
  85         /*
  86          * Default Cypress FX2 without EEPROM, e.g.:
  87          * Lcsoft Mini Board
  88          * Braintechnology USB Interface V2.x
  89          */
  90         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
  91                 FIRMWARE_DIR "/fx2lafw-cypress-fx2.fw",
  92                 DEV_CAPS_16BIT, NULL, NULL },
  93
  94         /*
  95          * Braintechnology USB-LPS
  96          */
  97         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
  98                 FIRMWARE_DIR "/fx2lafw-braintechnology-usb-lps.fw",
  99                 DEV_CAPS_16BIT, NULL, NULL },
 100
 101         { 0, 0, 0, 0, 0, 0, 0, 0, 0 }
 102 };
 103
 104 static const uint32_t drvopts[] = {
 105         SR_CONF_LOGIC_ANALYZER,
 106 };
 107
 108 static const uint32_t scanopts[] = {
 109         SR_CONF_CONN,
 110 };
 111
 112 static const uint32_t devopts[] = {
 113         SR_CONF_CONTINUOUS | SR_CONF_SET,
 114         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 115         SR_CONF_CONN | SR_CONF_GET,
 116         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 117         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 118         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 119 };
 120
 121 static const char *channel_names[] = {
 122         "0", "1", "2", "3", "4", "5", "6", "7",
 123         "8", "9", "10", "11", "12", "13", "14", "15",
 124 };
 125
 126 static const int32_t soft_trigger_matches[] = {
 127         SR_TRIGGER_ZERO,
 128         SR_TRIGGER_ONE,
 129         SR_TRIGGER_RISING,
 130         SR_TRIGGER_FALLING,
 131         SR_TRIGGER_EDGE,
 132 };
 133
 134 static const uint64_t samplerates[] = {
 135         SR_KHZ(20),
 136         SR_KHZ(25),
 137         SR_KHZ(50),
 138         SR_KHZ(100),
 139         SR_KHZ(200),
 140         SR_KHZ(250),
 141         SR_KHZ(500),
 142         SR_MHZ(1),
 143         SR_MHZ(2),
 144         SR_MHZ(3),
 145         SR_MHZ(4),
 146         SR_MHZ(6),
 147         SR_MHZ(8),
 148         SR_MHZ(12),
 149         SR_MHZ(16),
 150         SR_MHZ(24),
 151 };
 152
 153 static const uint64_t dslogic_samplerates[] = {
 154         SR_KHZ(10),
 155         SR_KHZ(20),
 156         SR_KHZ(50),
 157         SR_KHZ(100),
 158         SR_KHZ(200),
 159         SR_KHZ(500),
 160         SR_MHZ(1),
 161         SR_MHZ(2),
 162         SR_MHZ(5),
 163         SR_MHZ(10),
 164         SR_MHZ(20),
 165         SR_MHZ(25),
 166         SR_MHZ(50),
 167         SR_MHZ(100),
 168         SR_MHZ(200),
 169         SR_MHZ(400),
 170 };
 171
 172 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
 173
 174 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
 175 {
 176         return std_init(sr_ctx, di, LOG_PREFIX);
 177 }
 178
 179 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 180 {
 181         struct drv_context *drvc;
 182         struct dev_context *devc;
 183         struct sr_dev_inst *sdi;
 184         struct sr_usb_dev_inst *usb;
 185         struct sr_config *src;
 186         const struct fx2lafw_profile *prof;
 187         GSList *l, *devices, *conn_devices;
 188         gboolean has_firmware;
 189         struct libusb_device_descriptor des;
 190         libusb_device **devlist;
 191         struct libusb_device_handle *hdl;
 192         int num_logic_channels, ret, i, j;
 193         const char *conn;
 194         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 195
 196         drvc = di->priv;
 197
 198         conn = NULL;
 199         for (l = options; l; l = l->next) {
 200                 src = l->data;
 201                 switch (src->key) {
 202                 case SR_CONF_CONN:
 203                         conn = g_variant_get_string(src->data, NULL);
 204                         break;
 205                 }
 206         }
 207         if (conn)
 208                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 209         else
 210                 conn_devices = NULL;
 211
 212         /* Find all fx2lafw compatible devices and upload firmware to them. */
 213         devices = NULL;
 214         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 215         for (i = 0; devlist[i]; i++) {
 216                 if (conn) {
 217                         usb = NULL;
 218                         for (l = conn_devices; l; l = l->next) {
 219                                 usb = l->data;
 220                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 221                                         && usb->address == libusb_get_device_address(devlist[i]))
 222                                         break;
 223                         }
 224                         if (!l)
 225                                 /* This device matched none of the ones that
 226                                  * matched the conn specification. */
 227                                 continue;
 228                 }
 229
 230                 if ((ret = libusb_get_device_descriptor( devlist[i], &des)) != 0) {
 231                         sr_warn("Failed to get device descriptor: %s.",
 232                                 libusb_error_name(ret));
 233                         continue;
 234                 }
 235
 236                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 237                         continue;
 238
 239                 if (des.iManufacturer == 0) {
 240                         manufacturer[0] = '\0';
 241                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 242                                 des.iManufacturer, (unsigned char *) manufacturer,
 243                                 sizeof(manufacturer))) < 0) {
 244                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 245                                 libusb_error_name(ret));
 246                         continue;
 247                 }
 248
 249                 if (des.iProduct == 0) {
 250                         product[0] = '\0';
 251                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 252                                 des.iProduct, (unsigned char *) product,
 253                                 sizeof(product))) < 0) {
 254                         sr_warn("Failed to get product string descriptor: %s.",
 255                                 libusb_error_name(ret));
 256                         continue;
 257                 }
 258
 259                 if (des.iSerialNumber == 0) {
 260                         serial_num[0] = '\0';
 261                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 262                                 des.iSerialNumber, (unsigned char *) serial_num,
 263                                 sizeof(serial_num))) < 0) {
 264                         sr_warn("Failed to get serial number string descriptor: %s.",
 265                                 libusb_error_name(ret));
 266                         continue;
 267                 }
 268
 269                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 270
 271                 libusb_close(hdl);
 272
 273                 prof = NULL;
 274                 for (j = 0; supported_fx2[j].vid; j++) {
 275                         if (des.idVendor == supported_fx2[j].vid &&
 276                                         des.idProduct == supported_fx2[j].pid &&
 277                                         (!supported_fx2[j].usb_manufacturer ||
 278                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 279                                         (!supported_fx2[j].usb_manufacturer ||
 280                                          !strcmp(product, supported_fx2[j].usb_product))) {
 281                                 prof = &supported_fx2[j];
 282                                 break;
 283                         }
 284                 }
 285
 286                 /* Skip if the device was not found. */
 287                 if (!prof)
 288                         continue;
 289
 290                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 291                 sdi->status = SR_ST_INITIALIZING;
 292                 sdi->vendor = g_strdup(prof->vendor);
 293                 sdi->model = g_strdup(prof->model);
 294                 sdi->version = g_strdup(prof->model_version);
 295                 sdi->driver = di;
 296                 sdi->serial_num = g_strdup(serial_num);
 297                 sdi->connection_id = g_strdup(connection_id);
 298
 299                 /* Fill in channellist according to this device's profile. */
 300                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 301                 for (j = 0; j < num_logic_channels; j++)
 302                         sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE,
 303                                         channel_names[j]);
 304
 305                 devc = fx2lafw_dev_new();
 306                 devc->profile = prof;
 307                 devc->sample_wide = (prof->dev_caps & DEV_CAPS_16BIT) != 0;
 308                 sdi->priv = devc;
 309                 drvc->instances = g_slist_append(drvc->instances, sdi);
 310                 devices = g_slist_append(devices, sdi);
 311
 312                 if (!strcmp(prof->model, "DSLogic")
 313                                 || !strcmp(prof->model, "DSLogic Pro")
 314                                 || !strcmp(prof->model, "DSCope")) {
 315                         devc->dslogic = TRUE;
 316                         devc->samplerates = dslogic_samplerates;
 317                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 318                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 319                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 320                 } else {
 321                         devc->dslogic = FALSE;
 322                         devc->samplerates = samplerates;
 323                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 324                         has_firmware = match_manuf_prod(devlist[i],
 325                                         "sigrok", "fx2lafw");
 326                 }
 327
 328                 if (has_firmware) {
 329                         /* Already has the firmware, so fix the new address. */
 330                         sr_dbg("Found an fx2lafw device.");
 331                         sdi->status = SR_ST_INACTIVE;
 332                         sdi->inst_type = SR_INST_USB;
 333                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 334                                         libusb_get_device_address(devlist[i]), NULL);
 335                 } else {
 336                         if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
 337                                 prof->firmware) == SR_OK)
 338                                 /* Store when this device's FW was updated. */
 339                                 devc->fw_updated = g_get_monotonic_time();
 340                         else
 341                                 sr_err("Firmware upload failed for "
 342                                        "device %d.%d (logical).",
 343                                        libusb_get_bus_number(devlist[i]),
 344                                        libusb_get_device_address(devlist[i]));
 345                         sdi->inst_type = SR_INST_USB;
 346                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 347                                         0xff, NULL);
 348                 }
 349         }
 350         libusb_free_device_list(devlist, 1);
 351         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 352
 353         return devices;
 354 }
 355
 356 static GSList *dev_list(const struct sr_dev_driver *di)
 357 {
 358         return ((struct drv_context *)(di->priv))->instances;
 359 }
 360
 361 static int dev_open(struct sr_dev_inst *sdi)
 362 {
 363         struct sr_dev_driver *di = sdi->driver;
 364         struct sr_usb_dev_inst *usb;
 365         struct dev_context *devc;
 366         char *fpga_firmware = NULL;
 367         int ret;
 368         int64_t timediff_us, timediff_ms;
 369
 370         devc = sdi->priv;
 371         usb = sdi->conn;
 372
 373         if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) {
 374                 if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
 375                         if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
 376                                 sr_err("Failed to detach kernel driver: %s.",
 377                                         libusb_error_name(ret));
 378                                 return SR_ERR;
 379                         }
 380                 }
 381         }
 382
 383         /*
 384          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 385          * milliseconds for the FX2 to renumerate.
 386          */
 387         ret = SR_ERR;
 388         if (devc->fw_updated > 0) {
 389                 sr_info("Waiting for device to reset.");
 390                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 391                 g_usleep(300 * 1000);
 392                 timediff_ms = 0;
 393                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 394                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 395                                 break;
 396                         g_usleep(100 * 1000);
 397
 398                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 399                         timediff_ms = timediff_us / 1000;
 400                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 401                 }
 402                 if (ret != SR_OK) {
 403                         sr_err("Device failed to renumerate.");
 404                         return SR_ERR;
 405                 }
 406                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 407         } else {
 408                 sr_info("Firmware upload was not needed.");
 409                 ret = fx2lafw_dev_open(sdi, di);
 410         }
 411
 412         if (ret != SR_OK) {
 413                 sr_err("Unable to open device.");
 414                 return SR_ERR;
 415         }
 416
 417         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 418         if (ret != 0) {
 419                 switch (ret) {
 420                 case LIBUSB_ERROR_BUSY:
 421                         sr_err("Unable to claim USB interface. Another "
 422                                "program or driver has already claimed it.");
 423                         break;
 424                 case LIBUSB_ERROR_NO_DEVICE:
 425                         sr_err("Device has been disconnected.");
 426                         break;
 427                 default:
 428                         sr_err("Unable to claim interface: %s.",
 429                                libusb_error_name(ret));
 430                         break;
 431                 }
 432
 433                 return SR_ERR;
 434         }
 435
 436         if (devc->dslogic) {
 437                 if (!strcmp(devc->profile->model, "DSLogic")) {
 438                         fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
 439                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 440                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 441                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 442                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 443                 }
 444
 445                 if ((ret = dslogic_fpga_firmware_upload(sdi,
 446                                 fpga_firmware)) != SR_OK)
 447                         return ret;
 448         }
 449
 450         if (devc->cur_samplerate == 0) {
 451                 /* Samplerate hasn't been set; default to the slowest one. */
 452                 devc->cur_samplerate = devc->samplerates[0];
 453         }
 454
 455         return SR_OK;
 456 }
 457
 458 static int dev_close(struct sr_dev_inst *sdi)
 459 {
 460         struct sr_usb_dev_inst *usb;
 461
 462         usb = sdi->conn;
 463         if (!usb->devhdl)
 464                 return SR_ERR;
 465
 466         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 467                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 468         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 469         libusb_close(usb->devhdl);
 470         usb->devhdl = NULL;
 471         sdi->status = SR_ST_INACTIVE;
 472
 473         return SR_OK;
 474 }
 475
 476 static int cleanup(const struct sr_dev_driver *di)
 477 {
 478         int ret;
 479         struct drv_context *drvc;
 480
 481         if (!(drvc = di->priv))
 482                 return SR_OK;
 483
 484         ret = std_dev_clear(di, NULL);
 485
 486         g_free(drvc);
 487
 488         return ret;
 489 }
 490
 491 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 492                 const struct sr_channel_group *cg)
 493 {
 494         struct dev_context *devc;
 495         struct sr_usb_dev_inst *usb;
 496         char str[128];
 497
 498         (void)cg;
 499
 500         if (!sdi)
 501                 return SR_ERR_ARG;
 502
 503         devc = sdi->priv;
 504
 505         switch (key) {
 506         case SR_CONF_CONN:
 507                 if (!sdi->conn)
 508                         return SR_ERR_ARG;
 509                 usb = sdi->conn;
 510                 if (usb->address == 255)
 511                         /* Device still needs to re-enumerate after firmware
 512                          * upload, so we don't know its (future) address. */
 513                         return SR_ERR;
 514                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 515                 *data = g_variant_new_string(str);
 516                 break;
 517         case SR_CONF_LIMIT_SAMPLES:
 518                 *data = g_variant_new_uint64(devc->limit_samples);
 519                 break;
 520         case SR_CONF_SAMPLERATE:
 521                 *data = g_variant_new_uint64(devc->cur_samplerate);
 522                 break;
 523         case SR_CONF_CAPTURE_RATIO:
 524                 *data = g_variant_new_uint64(devc->capture_ratio);
 525                 break;
 526         default:
 527                 return SR_ERR_NA;
 528         }
 529
 530         return SR_OK;
 531 }
 532
 533 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 534                 const struct sr_channel_group *cg)
 535 {
 536         struct dev_context *devc;
 537         uint64_t arg;
 538         int i, ret;
 539
 540         (void)cg;
 541
 542         if (!sdi)
 543                 return SR_ERR_ARG;
 544
 545         if (sdi->status != SR_ST_ACTIVE)
 546                 return SR_ERR;
 547
 548         devc = sdi->priv;
 549
 550         ret = SR_OK;
 551
 552         switch (key) {
 553         case SR_CONF_SAMPLERATE:
 554                 arg = g_variant_get_uint64(data);
 555                 for (i = 0; i < devc->num_samplerates; i++) {
 556                         if (devc->samplerates[i] == arg) {
 557                                 devc->cur_samplerate = arg;
 558                                 break;
 559                         }
 560                 }
 561                 if (i == devc->num_samplerates)
 562                         ret = SR_ERR_ARG;
 563                 break;
 564         case SR_CONF_LIMIT_SAMPLES:
 565                 devc->limit_samples = g_variant_get_uint64(data);
 566                 break;
 567         case SR_CONF_CAPTURE_RATIO:
 568                 devc->capture_ratio = g_variant_get_uint64(data);
 569                 if (devc->capture_ratio > 100) {
 570                         devc->capture_ratio = 0;
 571                         ret = SR_ERR;
 572                 } else
 573                         ret = SR_OK;
 574                 break;
 575         default:
 576                 ret = SR_ERR_NA;
 577         }
 578
 579         return ret;
 580 }
 581
 582 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 583                 const struct sr_channel_group *cg)
 584 {
 585         struct dev_context *devc;
 586         GVariant *gvar;
 587         GVariantBuilder gvb;
 588
 589         (void)cg;
 590
 591         switch (key) {
 592         case SR_CONF_SCAN_OPTIONS:
 593                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 594                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 595                 break;
 596         case SR_CONF_DEVICE_OPTIONS:
 597                 if (!sdi)
 598                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 599                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 600                 else
 601                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 602                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 603                 break;
 604         case SR_CONF_SAMPLERATE:
 605                 if (!sdi->priv)
 606                         return SR_ERR_ARG;
 607                 devc = sdi->priv;
 608                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 609                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 610                                 devc->num_samplerates, sizeof(uint64_t));
 611                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 612                 *data = g_variant_builder_end(&gvb);
 613                 break;
 614         case SR_CONF_TRIGGER_MATCH:
 615                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 616                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 617                                 sizeof(int32_t));
 618                 break;
 619         default:
 620                 return SR_ERR_NA;
 621         }
 622
 623         return SR_OK;
 624 }
 625
 626 static int receive_data(int fd, int revents, void *cb_data)
 627 {
 628         struct timeval tv;
 629         struct drv_context *drvc;
 630
 631         (void)fd;
 632         (void)revents;
 633
 634         drvc = (struct drv_context *)cb_data;
 635
 636         tv.tv_sec = tv.tv_usec = 0;
 637         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 638
 639         return TRUE;
 640 }
 641
 642 static int start_transfers(const struct sr_dev_inst *sdi)
 643 {
 644         struct dev_context *devc;
 645         struct sr_usb_dev_inst *usb;
 646         struct sr_trigger *trigger;
 647         struct libusb_transfer *transfer;
 648         unsigned int i, num_transfers;
 649         int endpoint, timeout, ret;
 650         unsigned char *buf;
 651         size_t size;
 652
 653         devc = sdi->priv;
 654         usb = sdi->conn;
 655
 656         devc->sent_samples = 0;
 657         devc->acq_aborted = FALSE;
 658         devc->empty_transfer_count = 0;
 659
 660         if ((trigger = sr_session_trigger_get(sdi->session))) {
 661                 int pre_trigger_samples = 0;
 662                 if (devc->limit_samples > 0)
 663                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 664                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 665                 if (!devc->stl)
 666                         return SR_ERR_MALLOC;
 667                 devc->trigger_fired = FALSE;
 668         } else
 669                 devc->trigger_fired = TRUE;
 670
 671         timeout = fx2lafw_get_timeout(devc);
 672
 673         num_transfers = fx2lafw_get_number_of_transfers(devc);
 674         size = fx2lafw_get_buffer_size(devc);
 675         devc->submitted_transfers = 0;
 676
 677         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 678         if (!devc->transfers) {
 679                 sr_err("USB transfers malloc failed.");
 680                 return SR_ERR_MALLOC;
 681         }
 682
 683         timeout = fx2lafw_get_timeout(devc);
 684         endpoint = devc->dslogic ? 6 : 2;
 685         devc->num_transfers = num_transfers;
 686         for (i = 0; i < num_transfers; i++) {
 687                 if (!(buf = g_try_malloc(size))) {
 688                         sr_err("USB transfer buffer malloc failed.");
 689                         return SR_ERR_MALLOC;
 690                 }
 691                 transfer = libusb_alloc_transfer(0);
 692                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 693                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 694                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 695                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 696                         sr_err("Failed to submit transfer: %s.",
 697                                libusb_error_name(ret));
 698                         libusb_free_transfer(transfer);
 699                         g_free(buf);
 700                         fx2lafw_abort_acquisition(devc);
 701                         return SR_ERR;
 702                 }
 703                 devc->transfers[i] = transfer;
 704                 devc->submitted_transfers++;
 705         }
 706
 707         /* Send header packet to the session bus. */
 708         std_session_send_df_header(sdi, LOG_PREFIX);
 709
 710         return SR_OK;
 711 }
 712
 713 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 714 {
 715         const struct sr_dev_inst *sdi;
 716         struct dslogic_trigger_pos *tpos;
 717
 718         sdi = transfer->user_data;
 719
 720         if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 721                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 722                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 723                 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
 724                 g_free(tpos);
 725                 start_transfers(sdi);
 726         }
 727
 728         libusb_free_transfer(transfer);
 729
 730 }
 731
 732 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 733 {
 734         struct sr_usb_dev_inst *usb;
 735         struct libusb_transfer *transfer;
 736         struct dslogic_trigger_pos *tpos;
 737         int ret;
 738
 739         usb = sdi->conn;
 740
 741         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 742                 return ret;
 743
 744         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 745                 return ret;
 746
 747         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 748                 return ret;
 749
 750         sr_dbg("Getting trigger.");
 751         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 752         transfer = libusb_alloc_transfer(0);
 753         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 754                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 755                         dslogic_trigger_receive, (void *)sdi, 0);
 756         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 757                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 758                 libusb_free_transfer(transfer);
 759                 g_free(tpos);
 760                 return SR_ERR;
 761         }
 762
 763         return ret;
 764 }
 765
 766 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 767 {
 768         struct sr_dev_driver *di;
 769         struct drv_context *drvc;
 770         struct dev_context *devc;
 771         int timeout, ret;
 772
 773         if (sdi->status != SR_ST_ACTIVE)
 774                 return SR_ERR_DEV_CLOSED;
 775
 776         di = sdi->driver;
 777         drvc = di->priv;
 778         devc = sdi->priv;
 779
 780         devc->ctx = drvc->sr_ctx;
 781         devc->cb_data = cb_data;
 782         devc->sent_samples = 0;
 783         devc->empty_transfer_count = 0;
 784         devc->acq_aborted = FALSE;
 785
 786         timeout = fx2lafw_get_timeout(devc);
 787         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
 788
 789         if (devc->dslogic) {
 790                 dslogic_trigger_request(sdi);
 791         }
 792         else {
 793                 start_transfers(sdi);
 794                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
 795                         fx2lafw_abort_acquisition(devc);
 796                         return ret;
 797                 }
 798         }
 799
 800         return SR_OK;
 801 }
 802
 803 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 804 {
 805         (void)cb_data;
 806
 807         fx2lafw_abort_acquisition(sdi->priv);
 808
 809         return SR_OK;
 810 }
 811
 812 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
 813         .name = "fx2lafw",
 814         .longname = "fx2lafw (generic driver for FX2 based LAs)",
 815         .api_version = 1,
 816         .init = init,
 817         .cleanup = cleanup,
 818         .scan = scan,
 819         .dev_list = dev_list,
 820         .dev_clear = NULL,
 821         .config_get = config_get,
 822         .config_set = config_set,
 823         .config_list = config_list,
 824         .dev_open = dev_open,
 825         .dev_close = dev_close,
 826         .dev_acquisition_start = dev_acquisition_start,
 827         .dev_acquisition_stop = dev_acquisition_stop,
 828         .priv = NULL,
 829 };