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