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