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         /*
  51          * CWAV USBee ZX
  52          */
  53         { 0x08a9, 0x0005, "CWAV", "USBee ZX", NULL,
  54                 "fx2lafw-cwav-usbeezx.fw",
  55                 0, NULL, NULL},
  56
  57         /* DreamSourceLab DSLogic (before FW upload) */
  58         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  59                 "dreamsourcelab-dslogic-fx2.fw",
  60                 DEV_CAPS_16BIT, NULL, NULL},
  61         /* DreamSourceLab DSLogic (after FW upload) */
  62         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  63                 "dreamsourcelab-dslogic-fx2.fw",
  64                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  65
  66         /* DreamSourceLab DSCope (before FW upload) */
  67         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  68                 "dreamsourcelab-dscope-fx2.fw",
  69                 DEV_CAPS_16BIT, NULL, NULL},
  70         /* DreamSourceLab DSCope (after FW upload) */
  71         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  72                 "dreamsourcelab-dscope-fx2.fw",
  73                 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
  74
  75         /* DreamSourceLab DSLogic Pro (before FW upload) */
  76         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  77                 "dreamsourcelab-dslogic-pro-fx2.fw",
  78                 DEV_CAPS_16BIT, NULL, NULL},
  79         /* DreamSourceLab DSLogic Pro (after FW upload) */
  80         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  81                 "dreamsourcelab-dslogic-pro-fx2.fw",
  82                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  83
  84         /*
  85          * Saleae Logic
  86          * EE Electronics ESLA100
  87          * Robomotic MiniLogic
  88          * Robomotic BugLogic 3
  89          */
  90         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  91                 "fx2lafw-saleae-logic.fw",
  92                 0, NULL, NULL},
  93
  94         /*
  95          * Default Cypress FX2 without EEPROM, e.g.:
  96          * Lcsoft Mini Board
  97          * Braintechnology USB Interface V2.x
  98          */
  99         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
 100                 "fx2lafw-cypress-fx2.fw",
 101                 DEV_CAPS_16BIT, NULL, NULL },
 102
 103         /*
 104          * Braintechnology USB-LPS
 105          */
 106         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
 107                 "fx2lafw-braintechnology-usb-lps.fw",
 108                 DEV_CAPS_16BIT, NULL, NULL },
 109
 110         /*
 111          * sigrok FX2 based 8-channel logic analyzer
 112          */
 113         { 0x1d50, 0x608c, "sigrok", "FX2 LA (8ch)", NULL,
 114                 "fx2lafw-sigrok-fx2-8ch.fw",
 115                 0, NULL, NULL},
 116
 117         /*
 118          * sigrok FX2 based 16-channel logic analyzer
 119          */
 120         { 0x1d50, 0x608d, "sigrok", "FX2 LA (16ch)", NULL,
 121                 "fx2lafw-sigrok-fx2-16ch.fw",
 122                 DEV_CAPS_16BIT, NULL, NULL },
 123
 124         ALL_ZERO
 125 };
 126
 127 static const uint32_t drvopts[] = {
 128         SR_CONF_LOGIC_ANALYZER,
 129 };
 130
 131 static const uint32_t scanopts[] = {
 132         SR_CONF_CONN,
 133 };
 134
 135 static const uint32_t devopts[] = {
 136         SR_CONF_CONTINUOUS,
 137         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 138         SR_CONF_CONN | SR_CONF_GET,
 139         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 140         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 141         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 142 };
 143
 144 static const uint32_t dslogic_devopts[] = {
 145         SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
 146         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 147         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 148         SR_CONF_CONN | SR_CONF_GET,
 149         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 150         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 151         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 152         SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
 153         SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 154 };
 155
 156 static const int32_t soft_trigger_matches[] = {
 157         SR_TRIGGER_ZERO,
 158         SR_TRIGGER_ONE,
 159         SR_TRIGGER_RISING,
 160         SR_TRIGGER_FALLING,
 161         SR_TRIGGER_EDGE,
 162 };
 163
 164 /* Names assigned to available edge slope choices. */
 165 static const char *const signal_edge_names[] = {
 166         [DS_EDGE_RISING] = "rising",
 167         [DS_EDGE_FALLING] = "falling",
 168 };
 169
 170 static const struct {
 171         int range;
 172         gdouble low;
 173         gdouble high;
 174 } volt_thresholds[] = {
 175         { DS_VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
 176         { DS_VOLTAGE_RANGE_5_V, 1.4, 3.6 },
 177 };
 178
 179 static const uint64_t samplerates[] = {
 180         SR_KHZ(20),
 181         SR_KHZ(25),
 182         SR_KHZ(50),
 183         SR_KHZ(100),
 184         SR_KHZ(200),
 185         SR_KHZ(250),
 186         SR_KHZ(500),
 187         SR_MHZ(1),
 188         SR_MHZ(2),
 189         SR_MHZ(3),
 190         SR_MHZ(4),
 191         SR_MHZ(6),
 192         SR_MHZ(8),
 193         SR_MHZ(12),
 194         SR_MHZ(16),
 195         SR_MHZ(24),
 196 };
 197
 198 static const uint64_t dslogic_samplerates[] = {
 199         SR_KHZ(10),
 200         SR_KHZ(20),
 201         SR_KHZ(50),
 202         SR_KHZ(100),
 203         SR_KHZ(200),
 204         SR_KHZ(500),
 205         SR_MHZ(1),
 206         SR_MHZ(2),
 207         SR_MHZ(5),
 208         SR_MHZ(10),
 209         SR_MHZ(20),
 210         SR_MHZ(25),
 211         SR_MHZ(50),
 212         SR_MHZ(100),
 213         SR_MHZ(200),
 214         SR_MHZ(400),
 215 };
 216
 217 static gboolean is_plausible(const struct libusb_device_descriptor *des)
 218 {
 219         int i;
 220
 221         for (i = 0; supported_fx2[i].vid; i++) {
 222                 if (des->idVendor != supported_fx2[i].vid)
 223                         continue;
 224                 if (des->idProduct == supported_fx2[i].pid)
 225                         return TRUE;
 226         }
 227
 228         return FALSE;
 229 }
 230
 231 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 232 {
 233         struct drv_context *drvc;
 234         struct dev_context *devc;
 235         struct sr_dev_inst *sdi;
 236         struct sr_usb_dev_inst *usb;
 237         struct sr_channel *ch;
 238         struct sr_channel_group *cg;
 239         struct sr_config *src;
 240         const struct fx2lafw_profile *prof;
 241         GSList *l, *devices, *conn_devices;
 242         gboolean has_firmware;
 243         struct libusb_device_descriptor des;
 244         libusb_device **devlist;
 245         struct libusb_device_handle *hdl;
 246         int ret, i, j;
 247         int num_logic_channels = 0, num_analog_channels = 0;
 248         const char *conn;
 249         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 250         char channel_name[16];
 251
 252         drvc = di->context;
 253
 254         conn = NULL;
 255         for (l = options; l; l = l->next) {
 256                 src = l->data;
 257                 switch (src->key) {
 258                 case SR_CONF_CONN:
 259                         conn = g_variant_get_string(src->data, NULL);
 260                         break;
 261                 }
 262         }
 263         if (conn)
 264                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 265         else
 266                 conn_devices = NULL;
 267
 268         /* Find all fx2lafw compatible devices and upload firmware to them. */
 269         devices = NULL;
 270         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 271         for (i = 0; devlist[i]; i++) {
 272                 if (conn) {
 273                         usb = NULL;
 274                         for (l = conn_devices; l; l = l->next) {
 275                                 usb = l->data;
 276                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 277                                         && usb->address == libusb_get_device_address(devlist[i]))
 278                                         break;
 279                         }
 280                         if (!l)
 281                                 /* This device matched none of the ones that
 282                                  * matched the conn specification. */
 283                                 continue;
 284                 }
 285
 286                 libusb_get_device_descriptor( devlist[i], &des);
 287
 288                 if (!is_plausible(&des))
 289                         continue;
 290
 291                 if ((ret = libusb_open(devlist[i], &hdl)) < 0) {
 292                         sr_warn("Failed to open potential device with "
 293                                 "VID:PID %04x:%04x: %s.", des.idVendor,
 294                                 des.idProduct, libusb_error_name(ret));
 295                         continue;
 296                 }
 297
 298                 if (des.iManufacturer == 0) {
 299                         manufacturer[0] = '\0';
 300                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 301                                 des.iManufacturer, (unsigned char *) manufacturer,
 302                                 sizeof(manufacturer))) < 0) {
 303                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 304                                 libusb_error_name(ret));
 305                         continue;
 306                 }
 307
 308                 if (des.iProduct == 0) {
 309                         product[0] = '\0';
 310                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 311                                 des.iProduct, (unsigned char *) product,
 312                                 sizeof(product))) < 0) {
 313                         sr_warn("Failed to get product string descriptor: %s.",
 314                                 libusb_error_name(ret));
 315                         continue;
 316                 }
 317
 318                 if (des.iSerialNumber == 0) {
 319                         serial_num[0] = '\0';
 320                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 321                                 des.iSerialNumber, (unsigned char *) serial_num,
 322                                 sizeof(serial_num))) < 0) {
 323                         sr_warn("Failed to get serial number string descriptor: %s.",
 324                                 libusb_error_name(ret));
 325                         continue;
 326                 }
 327
 328                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 329
 330                 libusb_close(hdl);
 331
 332                 prof = NULL;
 333                 for (j = 0; supported_fx2[j].vid; j++) {
 334                         if (des.idVendor == supported_fx2[j].vid &&
 335                                         des.idProduct == supported_fx2[j].pid &&
 336                                         (!supported_fx2[j].usb_manufacturer ||
 337                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 338                                         (!supported_fx2[j].usb_product ||
 339                                          !strcmp(product, supported_fx2[j].usb_product))) {
 340                                 prof = &supported_fx2[j];
 341                                 break;
 342                         }
 343                 }
 344
 345                 /* Skip if the device was not found. */
 346                 if (!prof)
 347                         continue;
 348
 349                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 350                 sdi->status = SR_ST_INITIALIZING;
 351                 sdi->vendor = g_strdup(prof->vendor);
 352                 sdi->model = g_strdup(prof->model);
 353                 sdi->version = g_strdup(prof->model_version);
 354                 sdi->serial_num = g_strdup(serial_num);
 355                 sdi->connection_id = g_strdup(connection_id);
 356
 357                 /* Fill in channellist according to this device's profile. */
 358                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 359                 num_analog_channels = prof->dev_caps & DEV_CAPS_AX_ANALOG ? 1 : 0;
 360
 361                 /* Logic channels, all in one channel group. */
 362                 cg = g_malloc0(sizeof(struct sr_channel_group));
 363                 cg->name = g_strdup("Logic");
 364                 for (j = 0; j < num_logic_channels; j++) {
 365                         sprintf(channel_name, "D%d", j);
 366                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 367                                                 TRUE, channel_name);
 368                         cg->channels = g_slist_append(cg->channels, ch);
 369                 }
 370                 sdi->channel_groups = g_slist_append(NULL, cg);
 371
 372                 for (j = 0; j < num_analog_channels; j++) {
 373                         snprintf(channel_name, 16, "A%d", j);
 374                         ch = sr_channel_new(sdi, j + num_logic_channels,
 375                                         SR_CHANNEL_ANALOG, TRUE, channel_name);
 376
 377                         /* Every analog channel gets its own channel group. */
 378                         cg = g_malloc0(sizeof(struct sr_channel_group));
 379                         cg->name = g_strdup(channel_name);
 380                         cg->channels = g_slist_append(NULL, ch);
 381                         sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 382                 }
 383
 384                 devc = fx2lafw_dev_new();
 385                 devc->profile = prof;
 386                 sdi->priv = devc;
 387                 devices = g_slist_append(devices, sdi);
 388
 389                 if (!strcmp(prof->model, "DSLogic")
 390                                 || !strcmp(prof->model, "DSLogic Pro")
 391                                 || !strcmp(prof->model, "DSCope")) {
 392                         devc->dslogic = TRUE;
 393                         devc->samplerates = dslogic_samplerates;
 394                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 395                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 396                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 397                 } else {
 398                         devc->dslogic = FALSE;
 399                         devc->samplerates = samplerates;
 400                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 401                         has_firmware = match_manuf_prod(devlist[i],
 402                                         "sigrok", "fx2lafw");
 403                 }
 404
 405                 if (has_firmware) {
 406                         /* Already has the firmware, so fix the new address. */
 407                         sr_dbg("Found an fx2lafw device.");
 408                         sdi->status = SR_ST_INACTIVE;
 409                         sdi->inst_type = SR_INST_USB;
 410                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 411                                         libusb_get_device_address(devlist[i]), NULL);
 412                 } else {
 413                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 414                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 415                                 /* Store when this device's FW was updated. */
 416                                 devc->fw_updated = g_get_monotonic_time();
 417                         else
 418                                 sr_err("Firmware upload failed for "
 419                                        "device %d.%d (logical).",
 420                                        libusb_get_bus_number(devlist[i]),
 421                                        libusb_get_device_address(devlist[i]));
 422                         sdi->inst_type = SR_INST_USB;
 423                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 424                                         0xff, NULL);
 425                 }
 426         }
 427         libusb_free_device_list(devlist, 1);
 428         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 429
 430         return std_scan_complete(di, devices);
 431 }
 432
 433 static void clear_dev_context(void *priv)
 434 {
 435         struct dev_context *devc;
 436
 437         devc = priv;
 438         g_slist_free(devc->enabled_analog_channels);
 439         g_free(devc);
 440 }
 441
 442 static int dev_clear(const struct sr_dev_driver *di)
 443 {
 444         return std_dev_clear(di, clear_dev_context);
 445 }
 446
 447 static int dev_open(struct sr_dev_inst *sdi)
 448 {
 449         struct sr_dev_driver *di = sdi->driver;
 450         struct sr_usb_dev_inst *usb;
 451         struct dev_context *devc;
 452         const char *fpga_firmware = NULL;
 453         int ret;
 454         int64_t timediff_us, timediff_ms;
 455
 456         devc = sdi->priv;
 457         usb = sdi->conn;
 458
 459         /*
 460          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 461          * milliseconds for the FX2 to renumerate.
 462          */
 463         ret = SR_ERR;
 464         if (devc->fw_updated > 0) {
 465                 sr_info("Waiting for device to reset.");
 466                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 467                 g_usleep(300 * 1000);
 468                 timediff_ms = 0;
 469                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 470                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 471                                 break;
 472                         g_usleep(100 * 1000);
 473
 474                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 475                         timediff_ms = timediff_us / 1000;
 476                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 477                 }
 478                 if (ret != SR_OK) {
 479                         sr_err("Device failed to renumerate.");
 480                         return SR_ERR;
 481                 }
 482                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 483         } else {
 484                 sr_info("Firmware upload was not needed.");
 485                 ret = fx2lafw_dev_open(sdi, di);
 486         }
 487
 488         if (ret != SR_OK) {
 489                 sr_err("Unable to open device.");
 490                 return SR_ERR;
 491         }
 492
 493         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 494         if (ret != 0) {
 495                 switch (ret) {
 496                 case LIBUSB_ERROR_BUSY:
 497                         sr_err("Unable to claim USB interface. Another "
 498                                "program or driver has already claimed it.");
 499                         break;
 500                 case LIBUSB_ERROR_NO_DEVICE:
 501                         sr_err("Device has been disconnected.");
 502                         break;
 503                 default:
 504                         sr_err("Unable to claim interface: %s.",
 505                                libusb_error_name(ret));
 506                         break;
 507                 }
 508
 509                 return SR_ERR;
 510         }
 511
 512         if (devc->dslogic) {
 513                 if (!strcmp(devc->profile->model, "DSLogic")) {
 514                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
 515                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
 516                         else
 517                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
 518                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
 519                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 520                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 521                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 522                 }
 523
 524                 if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
 525                         return ret;
 526         }
 527         if (devc->cur_samplerate == 0) {
 528                 /* Samplerate hasn't been set; default to the slowest one. */
 529                 devc->cur_samplerate = devc->samplerates[0];
 530         }
 531
 532         return SR_OK;
 533 }
 534
 535 static int dev_close(struct sr_dev_inst *sdi)
 536 {
 537         struct sr_usb_dev_inst *usb;
 538
 539         usb = sdi->conn;
 540
 541         if (!usb->devhdl)
 542                 return SR_ERR;
 543
 544         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 545                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 546         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 547         libusb_close(usb->devhdl);
 548         usb->devhdl = NULL;
 549         sdi->status = SR_ST_INACTIVE;
 550
 551         return SR_OK;
 552 }
 553
 554 static int config_get(uint32_t key, GVariant **data,
 555         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 556 {
 557         struct dev_context *devc;
 558         struct sr_usb_dev_inst *usb;
 559         GVariant *range[2];
 560         unsigned int i;
 561         char str[128];
 562
 563         (void)cg;
 564
 565         if (!sdi)
 566                 return SR_ERR_ARG;
 567
 568         devc = sdi->priv;
 569
 570         switch (key) {
 571         case SR_CONF_CONN:
 572                 if (!sdi->conn)
 573                         return SR_ERR_ARG;
 574                 usb = sdi->conn;
 575                 if (usb->address == 255)
 576                         /* Device still needs to re-enumerate after firmware
 577                          * upload, so we don't know its (future) address. */
 578                         return SR_ERR;
 579                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 580                 *data = g_variant_new_string(str);
 581                 break;
 582         case SR_CONF_VOLTAGE_THRESHOLD:
 583                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 584                         if (volt_thresholds[i].range != devc->dslogic_voltage_threshold)
 585                                 continue;
 586                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 587                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 588                         *data = g_variant_new_tuple(range, 2);
 589                         break;
 590                 }
 591                 break;
 592         case SR_CONF_LIMIT_SAMPLES:
 593                 *data = g_variant_new_uint64(devc->limit_samples);
 594                 break;
 595         case SR_CONF_SAMPLERATE:
 596                 *data = g_variant_new_uint64(devc->cur_samplerate);
 597                 break;
 598         case SR_CONF_CAPTURE_RATIO:
 599                 *data = g_variant_new_uint64(devc->capture_ratio);
 600                 break;
 601         case SR_CONF_EXTERNAL_CLOCK:
 602                 *data = g_variant_new_boolean(devc->dslogic_external_clock);
 603                 break;
 604         case SR_CONF_CONTINUOUS:
 605                 *data = g_variant_new_boolean(devc->dslogic_continuous_mode);
 606                 break;
 607         case SR_CONF_CLOCK_EDGE:
 608                 i = devc->dslogic_clock_edge;
 609                 if (i >= ARRAY_SIZE(signal_edge_names))
 610                         return SR_ERR_BUG;
 611                 *data = g_variant_new_string(signal_edge_names[0]);
 612                 break;
 613         default:
 614                 return SR_ERR_NA;
 615         }
 616
 617         return SR_OK;
 618 }
 619
 620 /*
 621  * Helper for mapping a string-typed configuration value to an index
 622  * within a table of possible values.
 623  */
 624 static int lookup_index(GVariant *value, const char *const *table, int len)
 625 {
 626         const char *entry;
 627         int i;
 628
 629         entry = g_variant_get_string(value, NULL);
 630         if (!entry)
 631                 return -1;
 632
 633         /* Linear search is fine for very small tables. */
 634         for (i = 0; i < len; i++) {
 635                 if (strcmp(entry, table[i]) == 0)
 636                         return i;
 637         }
 638
 639         return -1;
 640 }
 641
 642 static int config_set(uint32_t key, GVariant *data,
 643         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 644 {
 645         struct dev_context *devc;
 646         uint64_t arg;
 647         int i, ret;
 648         gdouble low, high;
 649
 650         (void)cg;
 651
 652         if (!sdi)
 653                 return SR_ERR_ARG;
 654
 655         if (sdi->status != SR_ST_ACTIVE)
 656                 return SR_ERR;
 657
 658         devc = sdi->priv;
 659
 660         ret = SR_OK;
 661
 662         switch (key) {
 663         case SR_CONF_SAMPLERATE:
 664                 arg = g_variant_get_uint64(data);
 665                 for (i = 0; i < devc->num_samplerates; i++) {
 666                         if (devc->samplerates[i] == arg) {
 667                                 devc->cur_samplerate = arg;
 668                                 break;
 669                         }
 670                 }
 671                 if (i == devc->num_samplerates)
 672                         ret = SR_ERR_ARG;
 673                 break;
 674         case SR_CONF_LIMIT_SAMPLES:
 675                 devc->limit_samples = g_variant_get_uint64(data);
 676                 break;
 677         case SR_CONF_CAPTURE_RATIO:
 678                 devc->capture_ratio = g_variant_get_uint64(data);
 679                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 680                 break;
 681         case SR_CONF_VOLTAGE_THRESHOLD:
 682                 g_variant_get(data, "(dd)", &low, &high);
 683                 ret = SR_ERR_ARG;
 684                 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
 685                         if (fabs(volt_thresholds[i].low - low) < 0.1 &&
 686                             fabs(volt_thresholds[i].high - high) < 0.1) {
 687                                 devc->dslogic_voltage_threshold = volt_thresholds[i].range;
 688                                 break;
 689                         }
 690                 }
 691                 if (!strcmp(devc->profile->model, "DSLogic")) {
 692                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_5_V)
 693                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
 694                         else
 695                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
 696                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 697                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
 698                 }
 699                 break;
 700         case SR_CONF_EXTERNAL_CLOCK:
 701                 devc->dslogic_external_clock = g_variant_get_boolean(data);
 702                 break;
 703         case SR_CONF_CONTINUOUS:
 704                 devc->dslogic_continuous_mode = g_variant_get_boolean(data);
 705                 break;
 706         case SR_CONF_CLOCK_EDGE:
 707                 i = lookup_index(data, signal_edge_names,
 708                                    ARRAY_SIZE(signal_edge_names));
 709                 if (i < 0)
 710                         return SR_ERR_ARG;
 711                 devc->dslogic_clock_edge = i;
 712                 break;
 713         default:
 714                 ret = SR_ERR_NA;
 715         }
 716
 717         return ret;
 718 }
 719
 720 static int config_list(uint32_t key, GVariant **data,
 721         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 722 {
 723         struct dev_context *devc;
 724         GVariant *gvar, *range[2];
 725         GVariantBuilder gvb;
 726         unsigned int i;
 727
 728         (void)cg;
 729
 730         switch (key) {
 731         case SR_CONF_SCAN_OPTIONS:
 732                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 733                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 734                 break;
 735         case SR_CONF_DEVICE_OPTIONS:
 736                 if (!sdi) {
 737                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 738                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 739                 } else {
 740                         devc = sdi->priv;
 741                         if (!devc->dslogic)
 742                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 743                                                                   devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 744                         else
 745                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 746                                                                   dslogic_devopts, ARRAY_SIZE(dslogic_devopts), sizeof(uint32_t));
 747                 }
 748                 break;
 749         case SR_CONF_VOLTAGE_THRESHOLD:
 750                 if (!sdi->priv)
 751                         return SR_ERR_ARG;
 752                 devc = sdi->priv;
 753                 if (!devc->dslogic)
 754                         return SR_ERR_NA;
 755                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 756                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 757                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 758                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 759                         gvar = g_variant_new_tuple(range, 2);
 760                         g_variant_builder_add_value(&gvb, gvar);
 761                 }
 762                 *data = g_variant_builder_end(&gvb);
 763                 break;
 764         case SR_CONF_SAMPLERATE:
 765                 devc = sdi->priv;
 766                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 767                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 768                                 devc->num_samplerates, sizeof(uint64_t));
 769                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 770                 *data = g_variant_builder_end(&gvb);
 771                 break;
 772         case SR_CONF_TRIGGER_MATCH:
 773                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 774                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 775                                 sizeof(int32_t));
 776                 break;
 777         case SR_CONF_CLOCK_EDGE:
 778                 *data = g_variant_new_strv(signal_edge_names,
 779                         ARRAY_SIZE(signal_edge_names));
 780                 break;
 781         default:
 782                 return SR_ERR_NA;
 783         }
 784
 785         return SR_OK;
 786 }
 787
 788 static int receive_data(int fd, int revents, void *cb_data)
 789 {
 790         struct timeval tv;
 791         struct drv_context *drvc;
 792
 793         (void)fd;
 794         (void)revents;
 795
 796         drvc = (struct drv_context *)cb_data;
 797
 798         tv.tv_sec = tv.tv_usec = 0;
 799         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 800
 801         return TRUE;
 802 }
 803
 804 static int start_transfers(const struct sr_dev_inst *sdi)
 805 {
 806         struct dev_context *devc;
 807         struct sr_usb_dev_inst *usb;
 808         struct sr_trigger *trigger;
 809         struct libusb_transfer *transfer;
 810         unsigned int i, num_transfers;
 811         int endpoint, timeout, ret;
 812         unsigned char *buf;
 813         size_t size;
 814
 815         devc = sdi->priv;
 816         usb = sdi->conn;
 817
 818         devc->sent_samples = 0;
 819         devc->acq_aborted = FALSE;
 820         devc->empty_transfer_count = 0;
 821
 822         if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
 823                 int pre_trigger_samples = 0;
 824                 if (devc->limit_samples > 0)
 825                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 826                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 827                 if (!devc->stl)
 828                         return SR_ERR_MALLOC;
 829                 devc->trigger_fired = FALSE;
 830         } else
 831                 devc->trigger_fired = TRUE;
 832
 833         num_transfers = fx2lafw_get_number_of_transfers(devc);
 834
 835         //if (devc->dslogic)
 836         //      num_transfers = dslogic_get_number_of_transfers(devc);
 837
 838         if (devc->dslogic) {
 839                 if (devc->cur_samplerate == SR_MHZ(100))
 840                         num_transfers = 16;
 841                 else if (devc->cur_samplerate == SR_MHZ(200))
 842                         num_transfers = 8;
 843                 else if (devc->cur_samplerate == SR_MHZ(400))
 844                         num_transfers = 4;
 845         }
 846
 847         size = fx2lafw_get_buffer_size(devc);
 848         devc->submitted_transfers = 0;
 849
 850         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 851         if (!devc->transfers) {
 852                 sr_err("USB transfers malloc failed.");
 853                 return SR_ERR_MALLOC;
 854         }
 855
 856         timeout = fx2lafw_get_timeout(devc);
 857         endpoint = devc->dslogic ? 6 : 2;
 858         devc->num_transfers = num_transfers;
 859         for (i = 0; i < num_transfers; i++) {
 860                 if (!(buf = g_try_malloc(size))) {
 861                         sr_err("USB transfer buffer malloc failed.");
 862                         return SR_ERR_MALLOC;
 863                 }
 864                 transfer = libusb_alloc_transfer(0);
 865                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 866                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 867                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 868                 sr_info("submitting transfer: %d", i);
 869                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 870                         sr_err("Failed to submit transfer: %s.",
 871                                libusb_error_name(ret));
 872                         libusb_free_transfer(transfer);
 873                         g_free(buf);
 874                         fx2lafw_abort_acquisition(devc);
 875                         return SR_ERR;
 876                 }
 877                 devc->transfers[i] = transfer;
 878                 devc->submitted_transfers++;
 879         }
 880
 881         if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
 882                 devc->send_data_proc = mso_send_data_proc;
 883         else
 884                 devc->send_data_proc = la_send_data_proc;
 885
 886         std_session_send_df_header(sdi);
 887
 888         return SR_OK;
 889 }
 890
 891 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 892 {
 893         const struct sr_dev_inst *sdi;
 894         struct dslogic_trigger_pos *tpos;
 895         struct dev_context *devc;
 896
 897         sdi = transfer->user_data;
 898         devc = sdi->priv;
 899         if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
 900                 sr_dbg("Trigger transfer canceled.");
 901                 /* Terminate session. */
 902                 std_session_send_df_end(sdi);
 903                 usb_source_remove(sdi->session, devc->ctx);
 904                 devc->num_transfers = 0;
 905                 g_free(devc->transfers);
 906                 if (devc->stl) {
 907                         soft_trigger_logic_free(devc->stl);
 908                         devc->stl = NULL;
 909                 }
 910         } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 911                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 912                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 913                 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
 914                         tpos->ram_saddr, tpos->remain_cnt);
 915                 devc->trigger_pos = tpos->real_pos;
 916                 g_free(tpos);
 917                 start_transfers(sdi);
 918         }
 919         libusb_free_transfer(transfer);
 920 }
 921
 922 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 923 {
 924         struct sr_usb_dev_inst *usb;
 925         struct libusb_transfer *transfer;
 926         struct dslogic_trigger_pos *tpos;
 927         struct dev_context *devc;
 928         int ret;
 929
 930         usb = sdi->conn;
 931         devc = sdi->priv;
 932
 933         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 934                 return ret;
 935
 936         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 937                 return ret;
 938
 939         /* If this is a DSLogic Pro, set the voltage threshold. */
 940         if (!strcmp(devc->profile->model, "DSLogic Pro")){
 941                 if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
 942                         dslogic_set_vth(sdi, 1.4);
 943                 } else {
 944                         dslogic_set_vth(sdi, 3.3);
 945                 }
 946         }
 947
 948         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 949                 return ret;
 950
 951         sr_dbg("Getting trigger.");
 952         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 953         transfer = libusb_alloc_transfer(0);
 954         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 955                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 956                         dslogic_trigger_receive, (void *)sdi, 0);
 957         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 958                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 959                 libusb_free_transfer(transfer);
 960                 g_free(tpos);
 961                 return SR_ERR;
 962         }
 963
 964         devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
 965         if (!devc->transfers) {
 966                 sr_err("USB trigger_pos transfer malloc failed.");
 967                 return SR_ERR_MALLOC;
 968         }
 969         devc->num_transfers = 1;
 970         devc->submitted_transfers++;
 971         devc->transfers[0] = transfer;
 972
 973         return ret;
 974 }
 975
 976 static int configure_channels(const struct sr_dev_inst *sdi)
 977 {
 978         struct dev_context *devc;
 979         const GSList *l;
 980         int p;
 981         struct sr_channel *ch;
 982         uint32_t channel_mask = 0, num_analog = 0;
 983
 984         devc = sdi->priv;
 985
 986         g_slist_free(devc->enabled_analog_channels);
 987         devc->enabled_analog_channels = NULL;
 988         memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled));
 989
 990         for (l = sdi->channels, p = 0; l; l = l->next, p++) {
 991                 ch = l->data;
 992                 if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
 993                         num_analog++;
 994                         devc->ch_enabled[p] = ch->enabled;
 995                         devc->enabled_analog_channels =
 996                             g_slist_append(devc->enabled_analog_channels, ch);
 997                 } else {
 998                         channel_mask |= ch->enabled << p;
 999                 }
1000         }
1001
1002         /* Use no wide sampling if we have only the first 8 channels set. */
1003         devc->sample_wide = (channel_mask > 0xff || num_analog > 0);
1004
1005         return SR_OK;
1006 }
1007
1008 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
1009 {
1010         struct sr_dev_driver *di;
1011         struct drv_context *drvc;
1012         struct dev_context *devc;
1013         int timeout, ret;
1014         size_t size;
1015
1016         if (sdi->status != SR_ST_ACTIVE)
1017                 return SR_ERR_DEV_CLOSED;
1018
1019         di = sdi->driver;
1020         drvc = di->context;
1021         devc = sdi->priv;
1022
1023         devc->ctx = drvc->sr_ctx;
1024         devc->sent_samples = 0;
1025         devc->empty_transfer_count = 0;
1026         devc->acq_aborted = FALSE;
1027
1028         if (configure_channels(sdi) != SR_OK) {
1029                 sr_err("Failed to configure channels.");
1030                 return SR_ERR;
1031         }
1032
1033         timeout = fx2lafw_get_timeout(devc);
1034         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
1035
1036         if (devc->dslogic) {
1037                 dslogic_trigger_request(sdi);
1038         } else {
1039                 size = fx2lafw_get_buffer_size(devc);
1040                 /* Prepare for analog sampling. */
1041                 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
1042                         /* We need a buffer half the size of a transfer. */
1043                         devc->logic_buffer = g_try_malloc(size / 2);
1044                         devc->analog_buffer = g_try_malloc(
1045                                 sizeof(float) * size / 2);
1046                 }
1047                 start_transfers(sdi);
1048                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
1049                         fx2lafw_abort_acquisition(devc);
1050                         return ret;
1051                 }
1052         }
1053
1054         return SR_OK;
1055 }
1056
1057 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1058 {
1059         struct dev_context *devc;
1060
1061         devc = sdi->priv;
1062
1063         if (devc->dslogic)
1064                 dslogic_stop_acquisition(sdi);
1065
1066         fx2lafw_abort_acquisition(sdi->priv);
1067
1068         return SR_OK;
1069 }
1070
1071 static struct sr_dev_driver fx2lafw_driver_info = {
1072         .name = "fx2lafw",
1073         .longname = "fx2lafw (generic driver for FX2 based LAs)",
1074         .api_version = 1,
1075         .init = std_init,
1076         .cleanup = std_cleanup,
1077         .scan = scan,
1078         .dev_list = std_dev_list,
1079         .dev_clear = dev_clear,
1080         .config_get = config_get,
1081         .config_set = config_set,
1082         .config_list = config_list,
1083         .dev_open = dev_open,
1084         .dev_close = dev_close,
1085         .dev_acquisition_start = dev_acquisition_start,
1086         .dev_acquisition_stop = dev_acquisition_stop,
1087         .context = NULL,
1088 };
1089 SR_REGISTER_DEV_DRIVER(fx2lafw_driver_info);