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         /*
 374          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 375          * milliseconds for the FX2 to renumerate.
 376          */
 377         ret = SR_ERR;
 378         if (devc->fw_updated > 0) {
 379                 sr_info("Waiting for device to reset.");
 380                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 381                 g_usleep(300 * 1000);
 382                 timediff_ms = 0;
 383                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 384                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 385                                 break;
 386                         g_usleep(100 * 1000);
 387
 388                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 389                         timediff_ms = timediff_us / 1000;
 390                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 391                 }
 392                 if (ret != SR_OK) {
 393                         sr_err("Device failed to renumerate.");
 394                         return SR_ERR;
 395                 }
 396                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 397         } else {
 398                 sr_info("Firmware upload was not needed.");
 399                 ret = fx2lafw_dev_open(sdi, di);
 400         }
 401
 402         if (ret != SR_OK) {
 403                 sr_err("Unable to open device.");
 404                 return SR_ERR;
 405         }
 406
 407         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 408         if (ret != 0) {
 409                 switch (ret) {
 410                 case LIBUSB_ERROR_BUSY:
 411                         sr_err("Unable to claim USB interface. Another "
 412                                "program or driver has already claimed it.");
 413                         break;
 414                 case LIBUSB_ERROR_NO_DEVICE:
 415                         sr_err("Device has been disconnected.");
 416                         break;
 417                 default:
 418                         sr_err("Unable to claim interface: %s.",
 419                                libusb_error_name(ret));
 420                         break;
 421                 }
 422
 423                 return SR_ERR;
 424         }
 425
 426         if (devc->dslogic) {
 427                 if (!strcmp(devc->profile->model, "DSLogic")) {
 428                         fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
 429                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 430                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 431                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 432                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 433                 }
 434
 435                 if ((ret = dslogic_fpga_firmware_upload(sdi,
 436                                 fpga_firmware)) != SR_OK)
 437                         return ret;
 438         }
 439
 440         if (devc->cur_samplerate == 0) {
 441                 /* Samplerate hasn't been set; default to the slowest one. */
 442                 devc->cur_samplerate = devc->samplerates[0];
 443         }
 444
 445         return SR_OK;
 446 }
 447
 448 static int dev_close(struct sr_dev_inst *sdi)
 449 {
 450         struct sr_usb_dev_inst *usb;
 451
 452         usb = sdi->conn;
 453         if (!usb->devhdl)
 454                 return SR_ERR;
 455
 456         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 457                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 458         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 459         libusb_close(usb->devhdl);
 460         usb->devhdl = NULL;
 461         sdi->status = SR_ST_INACTIVE;
 462
 463         return SR_OK;
 464 }
 465
 466 static int cleanup(const struct sr_dev_driver *di)
 467 {
 468         int ret;
 469         struct drv_context *drvc;
 470
 471         if (!(drvc = di->priv))
 472                 return SR_OK;
 473
 474         ret = std_dev_clear(di, NULL);
 475
 476         g_free(drvc);
 477
 478         return ret;
 479 }
 480
 481 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 482                 const struct sr_channel_group *cg)
 483 {
 484         struct dev_context *devc;
 485         struct sr_usb_dev_inst *usb;
 486         char str[128];
 487
 488         (void)cg;
 489
 490         if (!sdi)
 491                 return SR_ERR_ARG;
 492
 493         devc = sdi->priv;
 494
 495         switch (key) {
 496         case SR_CONF_CONN:
 497                 if (!sdi->conn)
 498                         return SR_ERR_ARG;
 499                 usb = sdi->conn;
 500                 if (usb->address == 255)
 501                         /* Device still needs to re-enumerate after firmware
 502                          * upload, so we don't know its (future) address. */
 503                         return SR_ERR;
 504                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 505                 *data = g_variant_new_string(str);
 506                 break;
 507         case SR_CONF_LIMIT_SAMPLES:
 508                 *data = g_variant_new_uint64(devc->limit_samples);
 509                 break;
 510         case SR_CONF_SAMPLERATE:
 511                 *data = g_variant_new_uint64(devc->cur_samplerate);
 512                 break;
 513         case SR_CONF_CAPTURE_RATIO:
 514                 *data = g_variant_new_uint64(devc->capture_ratio);
 515                 break;
 516         default:
 517                 return SR_ERR_NA;
 518         }
 519
 520         return SR_OK;
 521 }
 522
 523 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
 524                 const struct sr_channel_group *cg)
 525 {
 526         struct dev_context *devc;
 527         uint64_t arg;
 528         int i, ret;
 529
 530         (void)cg;
 531
 532         if (!sdi)
 533                 return SR_ERR_ARG;
 534
 535         if (sdi->status != SR_ST_ACTIVE)
 536                 return SR_ERR;
 537
 538         devc = sdi->priv;
 539
 540         ret = SR_OK;
 541
 542         switch (key) {
 543         case SR_CONF_SAMPLERATE:
 544                 arg = g_variant_get_uint64(data);
 545                 for (i = 0; i < devc->num_samplerates; i++) {
 546                         if (devc->samplerates[i] == arg) {
 547                                 devc->cur_samplerate = arg;
 548                                 break;
 549                         }
 550                 }
 551                 if (i == devc->num_samplerates)
 552                         ret = SR_ERR_ARG;
 553                 break;
 554         case SR_CONF_LIMIT_SAMPLES:
 555                 devc->limit_samples = g_variant_get_uint64(data);
 556                 break;
 557         case SR_CONF_CAPTURE_RATIO:
 558                 devc->capture_ratio = g_variant_get_uint64(data);
 559                 if (devc->capture_ratio > 100) {
 560                         devc->capture_ratio = 0;
 561                         ret = SR_ERR;
 562                 } else
 563                         ret = SR_OK;
 564                 break;
 565         default:
 566                 ret = SR_ERR_NA;
 567         }
 568
 569         return ret;
 570 }
 571
 572 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
 573                 const struct sr_channel_group *cg)
 574 {
 575         struct dev_context *devc;
 576         GVariant *gvar;
 577         GVariantBuilder gvb;
 578
 579         (void)cg;
 580
 581         switch (key) {
 582         case SR_CONF_SCAN_OPTIONS:
 583                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 584                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 585                 break;
 586         case SR_CONF_DEVICE_OPTIONS:
 587                 if (!sdi)
 588                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 589                                         drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 590                 else
 591                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 592                                         devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 593                 break;
 594         case SR_CONF_SAMPLERATE:
 595                 if (!sdi->priv)
 596                         return SR_ERR_ARG;
 597                 devc = sdi->priv;
 598                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 599                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 600                                 devc->num_samplerates, sizeof(uint64_t));
 601                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 602                 *data = g_variant_builder_end(&gvb);
 603                 break;
 604         case SR_CONF_TRIGGER_MATCH:
 605                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 606                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 607                                 sizeof(int32_t));
 608                 break;
 609         default:
 610                 return SR_ERR_NA;
 611         }
 612
 613         return SR_OK;
 614 }
 615
 616 static int receive_data(int fd, int revents, void *cb_data)
 617 {
 618         struct timeval tv;
 619         struct drv_context *drvc;
 620
 621         (void)fd;
 622         (void)revents;
 623
 624         drvc = (struct drv_context *)cb_data;
 625
 626         tv.tv_sec = tv.tv_usec = 0;
 627         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 628
 629         return TRUE;
 630 }
 631
 632 static int start_transfers(const struct sr_dev_inst *sdi)
 633 {
 634         struct dev_context *devc;
 635         struct sr_usb_dev_inst *usb;
 636         struct sr_trigger *trigger;
 637         struct libusb_transfer *transfer;
 638         unsigned int i, num_transfers;
 639         int endpoint, timeout, ret;
 640         unsigned char *buf;
 641         size_t size;
 642
 643         devc = sdi->priv;
 644         usb = sdi->conn;
 645
 646         devc->sent_samples = 0;
 647         devc->acq_aborted = FALSE;
 648         devc->empty_transfer_count = 0;
 649
 650         if ((trigger = sr_session_trigger_get(sdi->session))) {
 651                 int pre_trigger_samples = 0;
 652                 if (devc->limit_samples > 0)
 653                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 654                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 655                 if (!devc->stl)
 656                         return SR_ERR_MALLOC;
 657                 devc->trigger_fired = FALSE;
 658         } else
 659                 devc->trigger_fired = TRUE;
 660
 661         timeout = fx2lafw_get_timeout(devc);
 662
 663         num_transfers = fx2lafw_get_number_of_transfers(devc);
 664         size = fx2lafw_get_buffer_size(devc);
 665         devc->submitted_transfers = 0;
 666
 667         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 668         if (!devc->transfers) {
 669                 sr_err("USB transfers malloc failed.");
 670                 return SR_ERR_MALLOC;
 671         }
 672
 673         timeout = fx2lafw_get_timeout(devc);
 674         endpoint = devc->dslogic ? 6 : 2;
 675         devc->num_transfers = num_transfers;
 676         for (i = 0; i < num_transfers; i++) {
 677                 if (!(buf = g_try_malloc(size))) {
 678                         sr_err("USB transfer buffer malloc failed.");
 679                         return SR_ERR_MALLOC;
 680                 }
 681                 transfer = libusb_alloc_transfer(0);
 682                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 683                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 684                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 685                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 686                         sr_err("Failed to submit transfer: %s.",
 687                                libusb_error_name(ret));
 688                         libusb_free_transfer(transfer);
 689                         g_free(buf);
 690                         fx2lafw_abort_acquisition(devc);
 691                         return SR_ERR;
 692                 }
 693                 devc->transfers[i] = transfer;
 694                 devc->submitted_transfers++;
 695         }
 696
 697         /* Send header packet to the session bus. */
 698         std_session_send_df_header(sdi, LOG_PREFIX);
 699
 700         return SR_OK;
 701 }
 702
 703 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 704 {
 705         const struct sr_dev_inst *sdi;
 706         struct dslogic_trigger_pos *tpos;
 707
 708         sdi = transfer->user_data;
 709
 710         if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 711                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 712                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 713                 sr_dbg("tpos real_pos %.8x ram_saddr %.8x", tpos->real_pos, tpos->ram_saddr);
 714                 g_free(tpos);
 715                 start_transfers(sdi);
 716         }
 717
 718         libusb_free_transfer(transfer);
 719
 720 }
 721
 722 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 723 {
 724         struct sr_usb_dev_inst *usb;
 725         struct libusb_transfer *transfer;
 726         struct dslogic_trigger_pos *tpos;
 727         int ret;
 728
 729         usb = sdi->conn;
 730
 731         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 732                 return ret;
 733
 734         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 735                 return ret;
 736
 737         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 738                 return ret;
 739
 740         sr_dbg("Getting trigger.");
 741         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 742         transfer = libusb_alloc_transfer(0);
 743         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 744                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 745                         dslogic_trigger_receive, (void *)sdi, 0);
 746         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 747                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 748                 libusb_free_transfer(transfer);
 749                 g_free(tpos);
 750                 return SR_ERR;
 751         }
 752
 753         return ret;
 754 }
 755
 756 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
 757 {
 758         struct sr_dev_driver *di;
 759         struct drv_context *drvc;
 760         struct dev_context *devc;
 761         int timeout, ret;
 762
 763         if (sdi->status != SR_ST_ACTIVE)
 764                 return SR_ERR_DEV_CLOSED;
 765
 766         di = sdi->driver;
 767         drvc = di->priv;
 768         devc = sdi->priv;
 769
 770         devc->ctx = drvc->sr_ctx;
 771         devc->cb_data = cb_data;
 772         devc->sent_samples = 0;
 773         devc->empty_transfer_count = 0;
 774         devc->acq_aborted = FALSE;
 775
 776         timeout = fx2lafw_get_timeout(devc);
 777         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
 778
 779         if (devc->dslogic) {
 780                 dslogic_trigger_request(sdi);
 781         }
 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         .priv = NULL,
 819 };