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 #include <math.h>
  25
  26 static const struct fx2lafw_profile supported_fx2[] = {
  27         /*
  28          * CWAV USBee AX
  29          * EE Electronics ESLA201A
  30          * ARMFLY AX-Pro
  31          */
  32         { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
  33                 "fx2lafw-cwav-usbeeax.fw",
  34                 DEV_CAPS_AX_ANALOG, NULL, NULL},
  35         /*
  36          * CWAV USBee DX
  37          * XZL-Studio DX
  38          */
  39         { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
  40                 "fx2lafw-cwav-usbeedx.fw",
  41                 DEV_CAPS_16BIT, NULL, NULL },
  42
  43         /*
  44          * CWAV USBee SX
  45          */
  46         { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
  47                 "fx2lafw-cwav-usbeesx.fw",
  48                 0, NULL, NULL},
  49
  50         /* DreamSourceLab DSLogic (before FW upload) */
  51         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  52                 "dreamsourcelab-dslogic-fx2.fw",
  53                 DEV_CAPS_16BIT, NULL, NULL},
  54         /* DreamSourceLab DSLogic (after FW upload) */
  55         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  56                 "dreamsourcelab-dslogic-fx2.fw",
  57                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  58
  59         /* DreamSourceLab DSCope (before FW upload) */
  60         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  61                 "dreamsourcelab-dscope-fx2.fw",
  62                 DEV_CAPS_16BIT, NULL, NULL},
  63         /* DreamSourceLab DSCope (after FW upload) */
  64         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  65                 "dreamsourcelab-dscope-fx2.fw",
  66                 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
  67
  68         /* DreamSourceLab DSLogic Pro (before FW upload) */
  69         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  70                 "dreamsourcelab-dslogic-pro-fx2.fw",
  71                 DEV_CAPS_16BIT, NULL, NULL},
  72         /* DreamSourceLab DSLogic Pro (after FW upload) */
  73         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  74                 "dreamsourcelab-dslogic-pro-fx2.fw",
  75                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  76
  77         /*
  78          * Saleae Logic
  79          * EE Electronics ESLA100
  80          * Robomotic MiniLogic
  81          * Robomotic BugLogic 3
  82          */
  83         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  84                 "fx2lafw-saleae-logic.fw",
  85                 0, NULL, NULL},
  86
  87         /*
  88          * Default Cypress FX2 without EEPROM, e.g.:
  89          * Lcsoft Mini Board
  90          * Braintechnology USB Interface V2.x
  91          */
  92         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
  93                 "fx2lafw-cypress-fx2.fw",
  94                 DEV_CAPS_16BIT, NULL, NULL },
  95
  96         /*
  97          * Braintechnology USB-LPS
  98          */
  99         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
 100                 "fx2lafw-braintechnology-usb-lps.fw",
 101                 DEV_CAPS_16BIT, NULL, NULL },
 102
 103         /*
 104          * sigrok FX2 based 8-channel logic analyzer
 105          */
 106         { 0x1d50, 0x608c, "sigrok", "FX2 LA (8ch)", NULL,
 107                 "fx2lafw-sigrok-fx2-8ch.fw",
 108                 0, NULL, NULL},
 109
 110         /*
 111          * sigrok FX2 based 16-channel logic analyzer
 112          */
 113         { 0x1d50, 0x608d, "sigrok", "FX2 LA (16ch)", NULL,
 114                 "fx2lafw-sigrok-fx2-16ch.fw",
 115                 DEV_CAPS_16BIT, NULL, NULL },
 116
 117         ALL_ZERO
 118 };
 119
 120 static const uint32_t drvopts[] = {
 121         SR_CONF_LOGIC_ANALYZER,
 122 };
 123
 124 static const uint32_t scanopts[] = {
 125         SR_CONF_CONN,
 126 };
 127
 128 static const uint32_t devopts[] = {
 129         SR_CONF_CONTINUOUS,
 130         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 131         SR_CONF_CONN | SR_CONF_GET,
 132         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 133         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 134         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 135 };
 136
 137 static const uint32_t dslogic_devopts[] = {
 138         SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
 139         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 140         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 141         SR_CONF_CONN | SR_CONF_GET,
 142         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 143         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 144         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 145         SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
 146         SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 147 };
 148
 149 static const int32_t soft_trigger_matches[] = {
 150         SR_TRIGGER_ZERO,
 151         SR_TRIGGER_ONE,
 152         SR_TRIGGER_RISING,
 153         SR_TRIGGER_FALLING,
 154         SR_TRIGGER_EDGE,
 155 };
 156
 157 /* Names assigned to available edge slope choices. */
 158 static const char *const signal_edge_names[] = {
 159         [DS_EDGE_RISING] = "rising",
 160         [DS_EDGE_FALLING] = "falling",
 161 };
 162
 163 static const struct {
 164         int range;
 165         gdouble low;
 166         gdouble high;
 167 } volt_thresholds[] = {
 168         { DS_VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
 169         { DS_VOLTAGE_RANGE_5_V, 1.4, 3.6 },
 170 };
 171
 172 static const uint64_t samplerates[] = {
 173         SR_KHZ(20),
 174         SR_KHZ(25),
 175         SR_KHZ(50),
 176         SR_KHZ(100),
 177         SR_KHZ(200),
 178         SR_KHZ(250),
 179         SR_KHZ(500),
 180         SR_MHZ(1),
 181         SR_MHZ(2),
 182         SR_MHZ(3),
 183         SR_MHZ(4),
 184         SR_MHZ(6),
 185         SR_MHZ(8),
 186         SR_MHZ(12),
 187         SR_MHZ(16),
 188         SR_MHZ(24),
 189 };
 190
 191 static const uint64_t dslogic_samplerates[] = {
 192         SR_KHZ(10),
 193         SR_KHZ(20),
 194         SR_KHZ(50),
 195         SR_KHZ(100),
 196         SR_KHZ(200),
 197         SR_KHZ(500),
 198         SR_MHZ(1),
 199         SR_MHZ(2),
 200         SR_MHZ(5),
 201         SR_MHZ(10),
 202         SR_MHZ(20),
 203         SR_MHZ(25),
 204         SR_MHZ(50),
 205         SR_MHZ(100),
 206         SR_MHZ(200),
 207         SR_MHZ(400),
 208 };
 209
 210 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 211 {
 212         struct drv_context *drvc;
 213         struct dev_context *devc;
 214         struct sr_dev_inst *sdi;
 215         struct sr_usb_dev_inst *usb;
 216         struct sr_channel *ch;
 217         struct sr_channel_group *cg;
 218         struct sr_config *src;
 219         const struct fx2lafw_profile *prof;
 220         GSList *l, *devices, *conn_devices;
 221         gboolean has_firmware;
 222         struct libusb_device_descriptor des;
 223         libusb_device **devlist;
 224         struct libusb_device_handle *hdl;
 225         int ret, i, j;
 226         int num_logic_channels = 0, num_analog_channels = 0;
 227         const char *conn;
 228         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 229         char channel_name[16];
 230
 231         drvc = di->context;
 232
 233         conn = NULL;
 234         for (l = options; l; l = l->next) {
 235                 src = l->data;
 236                 switch (src->key) {
 237                 case SR_CONF_CONN:
 238                         conn = g_variant_get_string(src->data, NULL);
 239                         break;
 240                 }
 241         }
 242         if (conn)
 243                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 244         else
 245                 conn_devices = NULL;
 246
 247         /* Find all fx2lafw compatible devices and upload firmware to them. */
 248         devices = NULL;
 249         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 250         for (i = 0; devlist[i]; i++) {
 251                 if (conn) {
 252                         usb = NULL;
 253                         for (l = conn_devices; l; l = l->next) {
 254                                 usb = l->data;
 255                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 256                                         && usb->address == libusb_get_device_address(devlist[i]))
 257                                         break;
 258                         }
 259                         if (!l)
 260                                 /* This device matched none of the ones that
 261                                  * matched the conn specification. */
 262                                 continue;
 263                 }
 264
 265                 libusb_get_device_descriptor( devlist[i], &des);
 266
 267                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 268                         continue;
 269
 270                 if (des.iManufacturer == 0) {
 271                         manufacturer[0] = '\0';
 272                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 273                                 des.iManufacturer, (unsigned char *) manufacturer,
 274                                 sizeof(manufacturer))) < 0) {
 275                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 276                                 libusb_error_name(ret));
 277                         continue;
 278                 }
 279
 280                 if (des.iProduct == 0) {
 281                         product[0] = '\0';
 282                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 283                                 des.iProduct, (unsigned char *) product,
 284                                 sizeof(product))) < 0) {
 285                         sr_warn("Failed to get product string descriptor: %s.",
 286                                 libusb_error_name(ret));
 287                         continue;
 288                 }
 289
 290                 if (des.iSerialNumber == 0) {
 291                         serial_num[0] = '\0';
 292                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 293                                 des.iSerialNumber, (unsigned char *) serial_num,
 294                                 sizeof(serial_num))) < 0) {
 295                         sr_warn("Failed to get serial number string descriptor: %s.",
 296                                 libusb_error_name(ret));
 297                         continue;
 298                 }
 299
 300                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 301
 302                 libusb_close(hdl);
 303
 304                 prof = NULL;
 305                 for (j = 0; supported_fx2[j].vid; j++) {
 306                         if (des.idVendor == supported_fx2[j].vid &&
 307                                         des.idProduct == supported_fx2[j].pid &&
 308                                         (!supported_fx2[j].usb_manufacturer ||
 309                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 310                                         (!supported_fx2[j].usb_manufacturer ||
 311                                          !strcmp(product, supported_fx2[j].usb_product))) {
 312                                 prof = &supported_fx2[j];
 313                                 break;
 314                         }
 315                 }
 316
 317                 /* Skip if the device was not found. */
 318                 if (!prof)
 319                         continue;
 320
 321                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 322                 sdi->status = SR_ST_INITIALIZING;
 323                 sdi->vendor = g_strdup(prof->vendor);
 324                 sdi->model = g_strdup(prof->model);
 325                 sdi->version = g_strdup(prof->model_version);
 326                 sdi->serial_num = g_strdup(serial_num);
 327                 sdi->connection_id = g_strdup(connection_id);
 328
 329                 /* Fill in channellist according to this device's profile. */
 330                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 331                 num_analog_channels = prof->dev_caps & DEV_CAPS_AX_ANALOG ? 1 : 0;
 332
 333                 /* Logic channels, all in one channel group. */
 334                 cg = g_malloc0(sizeof(struct sr_channel_group));
 335                 cg->name = g_strdup("Logic");
 336                 for (j = 0; j < num_logic_channels; j++) {
 337                         sprintf(channel_name, "D%d", j);
 338                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 339                                                 TRUE, channel_name);
 340                         cg->channels = g_slist_append(cg->channels, ch);
 341                 }
 342                 sdi->channel_groups = g_slist_append(NULL, cg);
 343
 344                 for (j = 0; j < num_analog_channels; j++) {
 345                         snprintf(channel_name, 16, "A%d", j);
 346                         ch = sr_channel_new(sdi, j + num_logic_channels,
 347                                         SR_CHANNEL_ANALOG, TRUE, channel_name);
 348
 349                         /* Every analog channel gets its own channel group. */
 350                         cg = g_malloc0(sizeof(struct sr_channel_group));
 351                         cg->name = g_strdup(channel_name);
 352                         cg->channels = g_slist_append(NULL, ch);
 353                         sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 354                 }
 355
 356                 devc = fx2lafw_dev_new();
 357                 devc->profile = prof;
 358                 if ((prof->dev_caps & DEV_CAPS_16BIT) || (prof->dev_caps & DEV_CAPS_AX_ANALOG))
 359                         devc->sample_wide = TRUE;
 360                 sdi->priv = devc;
 361                 devices = g_slist_append(devices, sdi);
 362
 363                 if (!strcmp(prof->model, "DSLogic")
 364                                 || !strcmp(prof->model, "DSLogic Pro")
 365                                 || !strcmp(prof->model, "DSCope")) {
 366                         devc->dslogic = TRUE;
 367                         devc->samplerates = dslogic_samplerates;
 368                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 369                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 370                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 371                 } else {
 372                         devc->dslogic = FALSE;
 373                         devc->samplerates = samplerates;
 374                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 375                         has_firmware = match_manuf_prod(devlist[i],
 376                                         "sigrok", "fx2lafw");
 377                 }
 378
 379                 if (has_firmware) {
 380                         /* Already has the firmware, so fix the new address. */
 381                         sr_dbg("Found an fx2lafw device.");
 382                         sdi->status = SR_ST_INACTIVE;
 383                         sdi->inst_type = SR_INST_USB;
 384                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 385                                         libusb_get_device_address(devlist[i]), NULL);
 386                 } else {
 387                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 388                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 389                                 /* Store when this device's FW was updated. */
 390                                 devc->fw_updated = g_get_monotonic_time();
 391                         else
 392                                 sr_err("Firmware upload failed for "
 393                                        "device %d.%d (logical).",
 394                                        libusb_get_bus_number(devlist[i]),
 395                                        libusb_get_device_address(devlist[i]));
 396                         sdi->inst_type = SR_INST_USB;
 397                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 398                                         0xff, NULL);
 399                 }
 400         }
 401         libusb_free_device_list(devlist, 1);
 402         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 403
 404         return std_scan_complete(di, devices);
 405 }
 406
 407 static void clear_dev_context(void *priv)
 408 {
 409         struct dev_context *devc;
 410
 411         devc = priv;
 412         g_slist_free(devc->enabled_analog_channels);
 413         g_free(devc);
 414 }
 415
 416 static int dev_clear(const struct sr_dev_driver *di)
 417 {
 418         return std_dev_clear(di, clear_dev_context);
 419 }
 420
 421 static int dev_open(struct sr_dev_inst *sdi)
 422 {
 423         struct sr_dev_driver *di = sdi->driver;
 424         struct sr_usb_dev_inst *usb;
 425         struct dev_context *devc;
 426         const char *fpga_firmware = NULL;
 427         int ret;
 428         int64_t timediff_us, timediff_ms;
 429
 430         devc = sdi->priv;
 431         usb = sdi->conn;
 432
 433         /*
 434          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 435          * milliseconds for the FX2 to renumerate.
 436          */
 437         ret = SR_ERR;
 438         if (devc->fw_updated > 0) {
 439                 sr_info("Waiting for device to reset.");
 440                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 441                 g_usleep(300 * 1000);
 442                 timediff_ms = 0;
 443                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 444                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 445                                 break;
 446                         g_usleep(100 * 1000);
 447
 448                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 449                         timediff_ms = timediff_us / 1000;
 450                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 451                 }
 452                 if (ret != SR_OK) {
 453                         sr_err("Device failed to renumerate.");
 454                         return SR_ERR;
 455                 }
 456                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 457         } else {
 458                 sr_info("Firmware upload was not needed.");
 459                 ret = fx2lafw_dev_open(sdi, di);
 460         }
 461
 462         if (ret != SR_OK) {
 463                 sr_err("Unable to open device.");
 464                 return SR_ERR;
 465         }
 466
 467         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 468         if (ret != 0) {
 469                 switch (ret) {
 470                 case LIBUSB_ERROR_BUSY:
 471                         sr_err("Unable to claim USB interface. Another "
 472                                "program or driver has already claimed it.");
 473                         break;
 474                 case LIBUSB_ERROR_NO_DEVICE:
 475                         sr_err("Device has been disconnected.");
 476                         break;
 477                 default:
 478                         sr_err("Unable to claim interface: %s.",
 479                                libusb_error_name(ret));
 480                         break;
 481                 }
 482
 483                 return SR_ERR;
 484         }
 485
 486         if (devc->dslogic) {
 487                 if (!strcmp(devc->profile->model, "DSLogic")) {
 488                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
 489                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
 490                         else
 491                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
 492                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
 493                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 494                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 495                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 496                 }
 497
 498                 if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
 499                         return ret;
 500         }
 501         if (devc->cur_samplerate == 0) {
 502                 /* Samplerate hasn't been set; default to the slowest one. */
 503                 devc->cur_samplerate = devc->samplerates[0];
 504         }
 505
 506         return SR_OK;
 507 }
 508
 509 static int dev_close(struct sr_dev_inst *sdi)
 510 {
 511         struct sr_usb_dev_inst *usb;
 512
 513         usb = sdi->conn;
 514
 515         if (!usb->devhdl)
 516                 return SR_ERR;
 517
 518         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 519                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 520         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 521         libusb_close(usb->devhdl);
 522         usb->devhdl = NULL;
 523         sdi->status = SR_ST_INACTIVE;
 524
 525         return SR_OK;
 526 }
 527
 528 static int config_get(uint32_t key, GVariant **data,
 529         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 530 {
 531         struct dev_context *devc;
 532         struct sr_usb_dev_inst *usb;
 533         GVariant *range[2];
 534         unsigned int i;
 535         char str[128];
 536
 537         (void)cg;
 538
 539         if (!sdi)
 540                 return SR_ERR_ARG;
 541
 542         devc = sdi->priv;
 543
 544         switch (key) {
 545         case SR_CONF_CONN:
 546                 if (!sdi->conn)
 547                         return SR_ERR_ARG;
 548                 usb = sdi->conn;
 549                 if (usb->address == 255)
 550                         /* Device still needs to re-enumerate after firmware
 551                          * upload, so we don't know its (future) address. */
 552                         return SR_ERR;
 553                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 554                 *data = g_variant_new_string(str);
 555                 break;
 556         case SR_CONF_VOLTAGE_THRESHOLD:
 557                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 558                         if (volt_thresholds[i].range != devc->dslogic_voltage_threshold)
 559                                 continue;
 560                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 561                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 562                         *data = g_variant_new_tuple(range, 2);
 563                         break;
 564                 }
 565                 break;
 566         case SR_CONF_LIMIT_SAMPLES:
 567                 *data = g_variant_new_uint64(devc->limit_samples);
 568                 break;
 569         case SR_CONF_SAMPLERATE:
 570                 *data = g_variant_new_uint64(devc->cur_samplerate);
 571                 break;
 572         case SR_CONF_CAPTURE_RATIO:
 573                 *data = g_variant_new_uint64(devc->capture_ratio);
 574                 break;
 575         case SR_CONF_EXTERNAL_CLOCK:
 576                 *data = g_variant_new_boolean(devc->dslogic_external_clock);
 577                 break;
 578         case SR_CONF_CONTINUOUS:
 579                 *data = g_variant_new_boolean(devc->dslogic_continuous_mode);
 580                 break;
 581         case SR_CONF_CLOCK_EDGE:
 582                 i = devc->dslogic_clock_edge;
 583                 if (i >= ARRAY_SIZE(signal_edge_names))
 584                         return SR_ERR_BUG;
 585                 *data = g_variant_new_string(signal_edge_names[0]);
 586                 break;
 587         default:
 588                 return SR_ERR_NA;
 589         }
 590
 591         return SR_OK;
 592 }
 593
 594 /*
 595  * Helper for mapping a string-typed configuration value to an index
 596  * within a table of possible values.
 597  */
 598 static int lookup_index(GVariant *value, const char *const *table, int len)
 599 {
 600         const char *entry;
 601         int i;
 602
 603         entry = g_variant_get_string(value, NULL);
 604         if (!entry)
 605                 return -1;
 606
 607         /* Linear search is fine for very small tables. */
 608         for (i = 0; i < len; i++) {
 609                 if (strcmp(entry, table[i]) == 0)
 610                         return i;
 611         }
 612
 613         return -1;
 614 }
 615
 616 static int config_set(uint32_t key, GVariant *data,
 617         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 618 {
 619         struct dev_context *devc;
 620         uint64_t arg;
 621         int i, ret;
 622         gdouble low, high;
 623
 624         (void)cg;
 625
 626         if (!sdi)
 627                 return SR_ERR_ARG;
 628
 629         if (sdi->status != SR_ST_ACTIVE)
 630                 return SR_ERR;
 631
 632         devc = sdi->priv;
 633
 634         ret = SR_OK;
 635
 636         switch (key) {
 637         case SR_CONF_SAMPLERATE:
 638                 arg = g_variant_get_uint64(data);
 639                 for (i = 0; i < devc->num_samplerates; i++) {
 640                         if (devc->samplerates[i] == arg) {
 641                                 devc->cur_samplerate = arg;
 642                                 break;
 643                         }
 644                 }
 645                 if (i == devc->num_samplerates)
 646                         ret = SR_ERR_ARG;
 647                 break;
 648         case SR_CONF_LIMIT_SAMPLES:
 649                 devc->limit_samples = g_variant_get_uint64(data);
 650                 break;
 651         case SR_CONF_CAPTURE_RATIO:
 652                 devc->capture_ratio = g_variant_get_uint64(data);
 653                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 654                 break;
 655         case SR_CONF_VOLTAGE_THRESHOLD:
 656                 g_variant_get(data, "(dd)", &low, &high);
 657                 ret = SR_ERR_ARG;
 658                 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
 659                         if (fabs(volt_thresholds[i].low - low) < 0.1 &&
 660                             fabs(volt_thresholds[i].high - high) < 0.1) {
 661                                 devc->dslogic_voltage_threshold = volt_thresholds[i].range;
 662                                 break;
 663                         }
 664                 }
 665                 if (!strcmp(devc->profile->model, "DSLogic")) {
 666                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_5_V)
 667                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
 668                         else
 669                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
 670                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 671                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
 672                 }
 673                 break;
 674         case SR_CONF_EXTERNAL_CLOCK:
 675                 devc->dslogic_external_clock = g_variant_get_boolean(data);
 676                 break;
 677         case SR_CONF_CONTINUOUS:
 678                 devc->dslogic_continuous_mode = g_variant_get_boolean(data);
 679                 break;
 680         case SR_CONF_CLOCK_EDGE:
 681                 i = lookup_index(data, signal_edge_names,
 682                                    ARRAY_SIZE(signal_edge_names));
 683                 if (i < 0)
 684                         return SR_ERR_ARG;
 685                 devc->dslogic_clock_edge = i;
 686                 break;
 687         default:
 688                 ret = SR_ERR_NA;
 689         }
 690
 691         return ret;
 692 }
 693
 694 static int config_list(uint32_t key, GVariant **data,
 695         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 696 {
 697         struct dev_context *devc;
 698         GVariant *gvar, *range[2];
 699         GVariantBuilder gvb;
 700         unsigned int i;
 701
 702         (void)cg;
 703
 704         switch (key) {
 705         case SR_CONF_SCAN_OPTIONS:
 706                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 707                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 708                 break;
 709         case SR_CONF_DEVICE_OPTIONS:
 710                 if (!sdi) {
 711                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 712                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 713                 } else {
 714                         devc = sdi->priv;
 715                         if (!devc->dslogic)
 716                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 717                                                                   devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 718                         else
 719                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 720                                                                   dslogic_devopts, ARRAY_SIZE(dslogic_devopts), sizeof(uint32_t));
 721                 }
 722                 break;
 723         case SR_CONF_VOLTAGE_THRESHOLD:
 724                 if (!sdi->priv)
 725                         return SR_ERR_ARG;
 726                 devc = sdi->priv;
 727                 if (!devc->dslogic)
 728                         return SR_ERR_NA;
 729                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 730                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 731                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 732                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 733                         gvar = g_variant_new_tuple(range, 2);
 734                         g_variant_builder_add_value(&gvb, gvar);
 735                 }
 736                 *data = g_variant_builder_end(&gvb);
 737                 break;
 738         case SR_CONF_SAMPLERATE:
 739                 devc = sdi->priv;
 740                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 741                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 742                                 devc->num_samplerates, sizeof(uint64_t));
 743                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 744                 *data = g_variant_builder_end(&gvb);
 745                 break;
 746         case SR_CONF_TRIGGER_MATCH:
 747                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 748                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 749                                 sizeof(int32_t));
 750                 break;
 751         case SR_CONF_CLOCK_EDGE:
 752                 *data = g_variant_new_strv(signal_edge_names,
 753                         ARRAY_SIZE(signal_edge_names));
 754                 break;
 755         default:
 756                 return SR_ERR_NA;
 757         }
 758
 759         return SR_OK;
 760 }
 761
 762 static int receive_data(int fd, int revents, void *cb_data)
 763 {
 764         struct timeval tv;
 765         struct drv_context *drvc;
 766
 767         (void)fd;
 768         (void)revents;
 769
 770         drvc = (struct drv_context *)cb_data;
 771
 772         tv.tv_sec = tv.tv_usec = 0;
 773         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 774
 775         return TRUE;
 776 }
 777
 778 static int start_transfers(const struct sr_dev_inst *sdi)
 779 {
 780         struct dev_context *devc;
 781         struct sr_usb_dev_inst *usb;
 782         struct sr_trigger *trigger;
 783         struct libusb_transfer *transfer;
 784         unsigned int i, num_transfers;
 785         int endpoint, timeout, ret;
 786         unsigned char *buf;
 787         size_t size;
 788
 789         devc = sdi->priv;
 790         usb = sdi->conn;
 791
 792         devc->sent_samples = 0;
 793         devc->acq_aborted = FALSE;
 794         devc->empty_transfer_count = 0;
 795
 796         if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
 797                 int pre_trigger_samples = 0;
 798                 if (devc->limit_samples > 0)
 799                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 800                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 801                 if (!devc->stl)
 802                         return SR_ERR_MALLOC;
 803                 devc->trigger_fired = FALSE;
 804         } else
 805                 devc->trigger_fired = TRUE;
 806
 807         num_transfers = fx2lafw_get_number_of_transfers(devc);
 808
 809         //if (devc->dslogic)
 810         //      num_transfers = dslogic_get_number_of_transfers(devc);
 811
 812         if (devc->dslogic) {
 813                 if (devc->cur_samplerate == SR_MHZ(100))
 814                         num_transfers = 16;
 815                 else if (devc->cur_samplerate == SR_MHZ(200))
 816                         num_transfers = 8;
 817                 else if (devc->cur_samplerate == SR_MHZ(400))
 818                         num_transfers = 4;
 819         }
 820
 821         size = fx2lafw_get_buffer_size(devc);
 822         devc->submitted_transfers = 0;
 823
 824         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 825         if (!devc->transfers) {
 826                 sr_err("USB transfers malloc failed.");
 827                 return SR_ERR_MALLOC;
 828         }
 829
 830         timeout = fx2lafw_get_timeout(devc);
 831         endpoint = devc->dslogic ? 6 : 2;
 832         devc->num_transfers = num_transfers;
 833         for (i = 0; i < num_transfers; i++) {
 834                 if (!(buf = g_try_malloc(size))) {
 835                         sr_err("USB transfer buffer malloc failed.");
 836                         return SR_ERR_MALLOC;
 837                 }
 838                 transfer = libusb_alloc_transfer(0);
 839                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 840                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 841                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 842                 sr_info("submitting transfer: %d", i);
 843                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 844                         sr_err("Failed to submit transfer: %s.",
 845                                libusb_error_name(ret));
 846                         libusb_free_transfer(transfer);
 847                         g_free(buf);
 848                         fx2lafw_abort_acquisition(devc);
 849                         return SR_ERR;
 850                 }
 851                 devc->transfers[i] = transfer;
 852                 devc->submitted_transfers++;
 853         }
 854
 855         if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
 856                 devc->send_data_proc = mso_send_data_proc;
 857         else
 858                 devc->send_data_proc = la_send_data_proc;
 859
 860         std_session_send_df_header(sdi, LOG_PREFIX);
 861
 862         return SR_OK;
 863 }
 864
 865 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 866 {
 867         const struct sr_dev_inst *sdi;
 868         struct dslogic_trigger_pos *tpos;
 869         struct dev_context *devc;
 870
 871         sdi = transfer->user_data;
 872         devc = sdi->priv;
 873         if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
 874                 sr_dbg("Trigger transfer canceled.");
 875                 /* Terminate session. */
 876                 std_session_send_df_end(sdi, LOG_PREFIX);
 877                 usb_source_remove(sdi->session, devc->ctx);
 878                 devc->num_transfers = 0;
 879                 g_free(devc->transfers);
 880                 if (devc->stl) {
 881                         soft_trigger_logic_free(devc->stl);
 882                         devc->stl = NULL;
 883                 }
 884         } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 885                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 886                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 887                 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
 888                         tpos->ram_saddr, tpos->remain_cnt);
 889                 devc->trigger_pos = tpos->real_pos;
 890                 g_free(tpos);
 891                 start_transfers(sdi);
 892         }
 893         libusb_free_transfer(transfer);
 894 }
 895
 896 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 897 {
 898         struct sr_usb_dev_inst *usb;
 899         struct libusb_transfer *transfer;
 900         struct dslogic_trigger_pos *tpos;
 901         struct dev_context *devc;
 902         int ret;
 903
 904         usb = sdi->conn;
 905         devc = sdi->priv;
 906
 907         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 908                 return ret;
 909
 910         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 911                 return ret;
 912
 913         /* If this is a DSLogic Pro, set the voltage threshold. */
 914         if (!strcmp(devc->profile->model, "DSLogic Pro")){
 915                 if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
 916                         dslogic_set_vth(sdi, 1.4);
 917                 } else {
 918                         dslogic_set_vth(sdi, 3.3);
 919                 }
 920         }
 921
 922         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 923                 return ret;
 924
 925         sr_dbg("Getting trigger.");
 926         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 927         transfer = libusb_alloc_transfer(0);
 928         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 929                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 930                         dslogic_trigger_receive, (void *)sdi, 0);
 931         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 932                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 933                 libusb_free_transfer(transfer);
 934                 g_free(tpos);
 935                 return SR_ERR;
 936         }
 937
 938         devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
 939         if (!devc->transfers) {
 940                 sr_err("USB trigger_pos transfer malloc failed.");
 941                 return SR_ERR_MALLOC;
 942         }
 943         devc->num_transfers = 1;
 944         devc->submitted_transfers++;
 945         devc->transfers[0] = transfer;
 946
 947         return ret;
 948 }
 949
 950 static int configure_channels(const struct sr_dev_inst *sdi)
 951 {
 952         struct dev_context *devc;
 953         const GSList *l;
 954         int p;
 955         struct sr_channel *ch;
 956
 957         devc = sdi->priv;
 958
 959         g_slist_free(devc->enabled_analog_channels);
 960         devc->enabled_analog_channels = NULL;
 961         memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled));
 962
 963         for (l = sdi->channels, p = 0; l; l = l->next, p++) {
 964                 ch = l->data;
 965                 if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
 966                         devc->ch_enabled[p] = ch->enabled;
 967                         devc->enabled_analog_channels =
 968                             g_slist_append(devc->enabled_analog_channels, ch);
 969                 }
 970         }
 971
 972         return SR_OK;
 973 }
 974
 975 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 976 {
 977         struct sr_dev_driver *di;
 978         struct drv_context *drvc;
 979         struct dev_context *devc;
 980         int timeout, ret;
 981         size_t size;
 982
 983         if (sdi->status != SR_ST_ACTIVE)
 984                 return SR_ERR_DEV_CLOSED;
 985
 986         di = sdi->driver;
 987         drvc = di->context;
 988         devc = sdi->priv;
 989
 990         devc->ctx = drvc->sr_ctx;
 991         devc->sent_samples = 0;
 992         devc->empty_transfer_count = 0;
 993         devc->acq_aborted = FALSE;
 994
 995         if (configure_channels(sdi) != SR_OK) {
 996                 sr_err("Failed to configure channels.");
 997                 return SR_ERR;
 998         }
 999
1000         timeout = fx2lafw_get_timeout(devc);
1001         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
1002
1003         if (devc->dslogic) {
1004                 dslogic_trigger_request(sdi);
1005         } else {
1006                 size = fx2lafw_get_buffer_size(devc);
1007                 /* Prepare for analog sampling. */
1008                 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
1009                         /* We need a buffer half the size of a transfer. */
1010                         devc->logic_buffer = g_try_malloc(size / 2);
1011                         devc->analog_buffer = g_try_malloc(
1012                                 sizeof(float) * size / 2);
1013                 }
1014                 start_transfers(sdi);
1015                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
1016                         fx2lafw_abort_acquisition(devc);
1017                         return ret;
1018                 }
1019         }
1020
1021         return SR_OK;
1022 }
1023
1024 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1025 {
1026         struct dev_context *devc;
1027
1028         devc = sdi->priv;
1029
1030         if (devc->dslogic)
1031                 dslogic_stop_acquisition(sdi);
1032
1033         fx2lafw_abort_acquisition(sdi->priv);
1034
1035         return SR_OK;
1036 }
1037
1038 static struct sr_dev_driver fx2lafw_driver_info = {
1039         .name = "fx2lafw",
1040         .longname = "fx2lafw (generic driver for FX2 based LAs)",
1041         .api_version = 1,
1042         .init = std_init,
1043         .cleanup = std_cleanup,
1044         .scan = scan,
1045         .dev_list = std_dev_list,
1046         .dev_clear = dev_clear,
1047         .config_get = config_get,
1048         .config_set = config_set,
1049         .config_list = config_list,
1050         .dev_open = dev_open,
1051         .dev_close = dev_close,
1052         .dev_acquisition_start = dev_acquisition_start,
1053         .dev_acquisition_stop = dev_acquisition_stop,
1054         .context = NULL,
1055 };
1056 SR_REGISTER_DEV_DRIVER(fx2lafw_driver_info);