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                 if ((prof->dev_caps & DEV_CAPS_16BIT) || (prof->dev_caps & DEV_CAPS_AX_ANALOG))
 387                         devc->sample_wide = TRUE;
 388                 sdi->priv = devc;
 389                 devices = g_slist_append(devices, sdi);
 390
 391                 if (!strcmp(prof->model, "DSLogic")
 392                                 || !strcmp(prof->model, "DSLogic Pro")
 393                                 || !strcmp(prof->model, "DSCope")) {
 394                         devc->dslogic = TRUE;
 395                         devc->samplerates = dslogic_samplerates;
 396                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 397                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 398                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 399                 } else {
 400                         devc->dslogic = FALSE;
 401                         devc->samplerates = samplerates;
 402                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 403                         has_firmware = match_manuf_prod(devlist[i],
 404                                         "sigrok", "fx2lafw");
 405                 }
 406
 407                 if (has_firmware) {
 408                         /* Already has the firmware, so fix the new address. */
 409                         sr_dbg("Found an fx2lafw device.");
 410                         sdi->status = SR_ST_INACTIVE;
 411                         sdi->inst_type = SR_INST_USB;
 412                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 413                                         libusb_get_device_address(devlist[i]), NULL);
 414                 } else {
 415                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 416                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 417                                 /* Store when this device's FW was updated. */
 418                                 devc->fw_updated = g_get_monotonic_time();
 419                         else
 420                                 sr_err("Firmware upload failed for "
 421                                        "device %d.%d (logical).",
 422                                        libusb_get_bus_number(devlist[i]),
 423                                        libusb_get_device_address(devlist[i]));
 424                         sdi->inst_type = SR_INST_USB;
 425                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 426                                         0xff, NULL);
 427                 }
 428         }
 429         libusb_free_device_list(devlist, 1);
 430         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 431
 432         return std_scan_complete(di, devices);
 433 }
 434
 435 static void clear_dev_context(void *priv)
 436 {
 437         struct dev_context *devc;
 438
 439         devc = priv;
 440         g_slist_free(devc->enabled_analog_channels);
 441         g_free(devc);
 442 }
 443
 444 static int dev_clear(const struct sr_dev_driver *di)
 445 {
 446         return std_dev_clear(di, clear_dev_context);
 447 }
 448
 449 static int dev_open(struct sr_dev_inst *sdi)
 450 {
 451         struct sr_dev_driver *di = sdi->driver;
 452         struct sr_usb_dev_inst *usb;
 453         struct dev_context *devc;
 454         const char *fpga_firmware = NULL;
 455         int ret;
 456         int64_t timediff_us, timediff_ms;
 457
 458         devc = sdi->priv;
 459         usb = sdi->conn;
 460
 461         /*
 462          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 463          * milliseconds for the FX2 to renumerate.
 464          */
 465         ret = SR_ERR;
 466         if (devc->fw_updated > 0) {
 467                 sr_info("Waiting for device to reset.");
 468                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 469                 g_usleep(300 * 1000);
 470                 timediff_ms = 0;
 471                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 472                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 473                                 break;
 474                         g_usleep(100 * 1000);
 475
 476                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 477                         timediff_ms = timediff_us / 1000;
 478                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 479                 }
 480                 if (ret != SR_OK) {
 481                         sr_err("Device failed to renumerate.");
 482                         return SR_ERR;
 483                 }
 484                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 485         } else {
 486                 sr_info("Firmware upload was not needed.");
 487                 ret = fx2lafw_dev_open(sdi, di);
 488         }
 489
 490         if (ret != SR_OK) {
 491                 sr_err("Unable to open device.");
 492                 return SR_ERR;
 493         }
 494
 495         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 496         if (ret != 0) {
 497                 switch (ret) {
 498                 case LIBUSB_ERROR_BUSY:
 499                         sr_err("Unable to claim USB interface. Another "
 500                                "program or driver has already claimed it.");
 501                         break;
 502                 case LIBUSB_ERROR_NO_DEVICE:
 503                         sr_err("Device has been disconnected.");
 504                         break;
 505                 default:
 506                         sr_err("Unable to claim interface: %s.",
 507                                libusb_error_name(ret));
 508                         break;
 509                 }
 510
 511                 return SR_ERR;
 512         }
 513
 514         if (devc->dslogic) {
 515                 if (!strcmp(devc->profile->model, "DSLogic")) {
 516                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
 517                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
 518                         else
 519                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
 520                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
 521                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 522                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 523                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 524                 }
 525
 526                 if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
 527                         return ret;
 528         }
 529         if (devc->cur_samplerate == 0) {
 530                 /* Samplerate hasn't been set; default to the slowest one. */
 531                 devc->cur_samplerate = devc->samplerates[0];
 532         }
 533
 534         return SR_OK;
 535 }
 536
 537 static int dev_close(struct sr_dev_inst *sdi)
 538 {
 539         struct sr_usb_dev_inst *usb;
 540
 541         usb = sdi->conn;
 542
 543         if (!usb->devhdl)
 544                 return SR_ERR;
 545
 546         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 547                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 548         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 549         libusb_close(usb->devhdl);
 550         usb->devhdl = NULL;
 551         sdi->status = SR_ST_INACTIVE;
 552
 553         return SR_OK;
 554 }
 555
 556 static int config_get(uint32_t key, GVariant **data,
 557         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 558 {
 559         struct dev_context *devc;
 560         struct sr_usb_dev_inst *usb;
 561         GVariant *range[2];
 562         unsigned int i;
 563         char str[128];
 564
 565         (void)cg;
 566
 567         if (!sdi)
 568                 return SR_ERR_ARG;
 569
 570         devc = sdi->priv;
 571
 572         switch (key) {
 573         case SR_CONF_CONN:
 574                 if (!sdi->conn)
 575                         return SR_ERR_ARG;
 576                 usb = sdi->conn;
 577                 if (usb->address == 255)
 578                         /* Device still needs to re-enumerate after firmware
 579                          * upload, so we don't know its (future) address. */
 580                         return SR_ERR;
 581                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 582                 *data = g_variant_new_string(str);
 583                 break;
 584         case SR_CONF_VOLTAGE_THRESHOLD:
 585                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 586                         if (volt_thresholds[i].range != devc->dslogic_voltage_threshold)
 587                                 continue;
 588                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 589                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 590                         *data = g_variant_new_tuple(range, 2);
 591                         break;
 592                 }
 593                 break;
 594         case SR_CONF_LIMIT_SAMPLES:
 595                 *data = g_variant_new_uint64(devc->limit_samples);
 596                 break;
 597         case SR_CONF_SAMPLERATE:
 598                 *data = g_variant_new_uint64(devc->cur_samplerate);
 599                 break;
 600         case SR_CONF_CAPTURE_RATIO:
 601                 *data = g_variant_new_uint64(devc->capture_ratio);
 602                 break;
 603         case SR_CONF_EXTERNAL_CLOCK:
 604                 *data = g_variant_new_boolean(devc->dslogic_external_clock);
 605                 break;
 606         case SR_CONF_CONTINUOUS:
 607                 *data = g_variant_new_boolean(devc->dslogic_continuous_mode);
 608                 break;
 609         case SR_CONF_CLOCK_EDGE:
 610                 i = devc->dslogic_clock_edge;
 611                 if (i >= ARRAY_SIZE(signal_edge_names))
 612                         return SR_ERR_BUG;
 613                 *data = g_variant_new_string(signal_edge_names[0]);
 614                 break;
 615         default:
 616                 return SR_ERR_NA;
 617         }
 618
 619         return SR_OK;
 620 }
 621
 622 /*
 623  * Helper for mapping a string-typed configuration value to an index
 624  * within a table of possible values.
 625  */
 626 static int lookup_index(GVariant *value, const char *const *table, int len)
 627 {
 628         const char *entry;
 629         int i;
 630
 631         entry = g_variant_get_string(value, NULL);
 632         if (!entry)
 633                 return -1;
 634
 635         /* Linear search is fine for very small tables. */
 636         for (i = 0; i < len; i++) {
 637                 if (strcmp(entry, table[i]) == 0)
 638                         return i;
 639         }
 640
 641         return -1;
 642 }
 643
 644 static int config_set(uint32_t key, GVariant *data,
 645         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 646 {
 647         struct dev_context *devc;
 648         uint64_t arg;
 649         int i, ret;
 650         gdouble low, high;
 651
 652         (void)cg;
 653
 654         if (!sdi)
 655                 return SR_ERR_ARG;
 656
 657         if (sdi->status != SR_ST_ACTIVE)
 658                 return SR_ERR;
 659
 660         devc = sdi->priv;
 661
 662         ret = SR_OK;
 663
 664         switch (key) {
 665         case SR_CONF_SAMPLERATE:
 666                 arg = g_variant_get_uint64(data);
 667                 for (i = 0; i < devc->num_samplerates; i++) {
 668                         if (devc->samplerates[i] == arg) {
 669                                 devc->cur_samplerate = arg;
 670                                 break;
 671                         }
 672                 }
 673                 if (i == devc->num_samplerates)
 674                         ret = SR_ERR_ARG;
 675                 break;
 676         case SR_CONF_LIMIT_SAMPLES:
 677                 devc->limit_samples = g_variant_get_uint64(data);
 678                 break;
 679         case SR_CONF_CAPTURE_RATIO:
 680                 devc->capture_ratio = g_variant_get_uint64(data);
 681                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 682                 break;
 683         case SR_CONF_VOLTAGE_THRESHOLD:
 684                 g_variant_get(data, "(dd)", &low, &high);
 685                 ret = SR_ERR_ARG;
 686                 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
 687                         if (fabs(volt_thresholds[i].low - low) < 0.1 &&
 688                             fabs(volt_thresholds[i].high - high) < 0.1) {
 689                                 devc->dslogic_voltage_threshold = volt_thresholds[i].range;
 690                                 break;
 691                         }
 692                 }
 693                 if (!strcmp(devc->profile->model, "DSLogic")) {
 694                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_5_V)
 695                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
 696                         else
 697                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
 698                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 699                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
 700                 }
 701                 break;
 702         case SR_CONF_EXTERNAL_CLOCK:
 703                 devc->dslogic_external_clock = g_variant_get_boolean(data);
 704                 break;
 705         case SR_CONF_CONTINUOUS:
 706                 devc->dslogic_continuous_mode = g_variant_get_boolean(data);
 707                 break;
 708         case SR_CONF_CLOCK_EDGE:
 709                 i = lookup_index(data, signal_edge_names,
 710                                    ARRAY_SIZE(signal_edge_names));
 711                 if (i < 0)
 712                         return SR_ERR_ARG;
 713                 devc->dslogic_clock_edge = i;
 714                 break;
 715         default:
 716                 ret = SR_ERR_NA;
 717         }
 718
 719         return ret;
 720 }
 721
 722 static int config_list(uint32_t key, GVariant **data,
 723         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 724 {
 725         struct dev_context *devc;
 726         GVariant *gvar, *range[2];
 727         GVariantBuilder gvb;
 728         unsigned int i;
 729
 730         (void)cg;
 731
 732         switch (key) {
 733         case SR_CONF_SCAN_OPTIONS:
 734                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 735                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 736                 break;
 737         case SR_CONF_DEVICE_OPTIONS:
 738                 if (!sdi) {
 739                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 740                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 741                 } else {
 742                         devc = sdi->priv;
 743                         if (!devc->dslogic)
 744                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 745                                                                   devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 746                         else
 747                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 748                                                                   dslogic_devopts, ARRAY_SIZE(dslogic_devopts), sizeof(uint32_t));
 749                 }
 750                 break;
 751         case SR_CONF_VOLTAGE_THRESHOLD:
 752                 if (!sdi->priv)
 753                         return SR_ERR_ARG;
 754                 devc = sdi->priv;
 755                 if (!devc->dslogic)
 756                         return SR_ERR_NA;
 757                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 758                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 759                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 760                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 761                         gvar = g_variant_new_tuple(range, 2);
 762                         g_variant_builder_add_value(&gvb, gvar);
 763                 }
 764                 *data = g_variant_builder_end(&gvb);
 765                 break;
 766         case SR_CONF_SAMPLERATE:
 767                 devc = sdi->priv;
 768                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 769                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 770                                 devc->num_samplerates, sizeof(uint64_t));
 771                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 772                 *data = g_variant_builder_end(&gvb);
 773                 break;
 774         case SR_CONF_TRIGGER_MATCH:
 775                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 776                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 777                                 sizeof(int32_t));
 778                 break;
 779         case SR_CONF_CLOCK_EDGE:
 780                 *data = g_variant_new_strv(signal_edge_names,
 781                         ARRAY_SIZE(signal_edge_names));
 782                 break;
 783         default:
 784                 return SR_ERR_NA;
 785         }
 786
 787         return SR_OK;
 788 }
 789
 790 static int receive_data(int fd, int revents, void *cb_data)
 791 {
 792         struct timeval tv;
 793         struct drv_context *drvc;
 794
 795         (void)fd;
 796         (void)revents;
 797
 798         drvc = (struct drv_context *)cb_data;
 799
 800         tv.tv_sec = tv.tv_usec = 0;
 801         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 802
 803         return TRUE;
 804 }
 805
 806 static int start_transfers(const struct sr_dev_inst *sdi)
 807 {
 808         struct dev_context *devc;
 809         struct sr_usb_dev_inst *usb;
 810         struct sr_trigger *trigger;
 811         struct libusb_transfer *transfer;
 812         unsigned int i, num_transfers;
 813         int endpoint, timeout, ret;
 814         unsigned char *buf;
 815         size_t size;
 816
 817         devc = sdi->priv;
 818         usb = sdi->conn;
 819
 820         devc->sent_samples = 0;
 821         devc->acq_aborted = FALSE;
 822         devc->empty_transfer_count = 0;
 823
 824         if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
 825                 int pre_trigger_samples = 0;
 826                 if (devc->limit_samples > 0)
 827                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 828                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 829                 if (!devc->stl)
 830                         return SR_ERR_MALLOC;
 831                 devc->trigger_fired = FALSE;
 832         } else
 833                 devc->trigger_fired = TRUE;
 834
 835         num_transfers = fx2lafw_get_number_of_transfers(devc);
 836
 837         //if (devc->dslogic)
 838         //      num_transfers = dslogic_get_number_of_transfers(devc);
 839
 840         if (devc->dslogic) {
 841                 if (devc->cur_samplerate == SR_MHZ(100))
 842                         num_transfers = 16;
 843                 else if (devc->cur_samplerate == SR_MHZ(200))
 844                         num_transfers = 8;
 845                 else if (devc->cur_samplerate == SR_MHZ(400))
 846                         num_transfers = 4;
 847         }
 848
 849         size = fx2lafw_get_buffer_size(devc);
 850         devc->submitted_transfers = 0;
 851
 852         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 853         if (!devc->transfers) {
 854                 sr_err("USB transfers malloc failed.");
 855                 return SR_ERR_MALLOC;
 856         }
 857
 858         timeout = fx2lafw_get_timeout(devc);
 859         endpoint = devc->dslogic ? 6 : 2;
 860         devc->num_transfers = num_transfers;
 861         for (i = 0; i < num_transfers; i++) {
 862                 if (!(buf = g_try_malloc(size))) {
 863                         sr_err("USB transfer buffer malloc failed.");
 864                         return SR_ERR_MALLOC;
 865                 }
 866                 transfer = libusb_alloc_transfer(0);
 867                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 868                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 869                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 870                 sr_info("submitting transfer: %d", i);
 871                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 872                         sr_err("Failed to submit transfer: %s.",
 873                                libusb_error_name(ret));
 874                         libusb_free_transfer(transfer);
 875                         g_free(buf);
 876                         fx2lafw_abort_acquisition(devc);
 877                         return SR_ERR;
 878                 }
 879                 devc->transfers[i] = transfer;
 880                 devc->submitted_transfers++;
 881         }
 882
 883         if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
 884                 devc->send_data_proc = mso_send_data_proc;
 885         else
 886                 devc->send_data_proc = la_send_data_proc;
 887
 888         std_session_send_df_header(sdi);
 889
 890         return SR_OK;
 891 }
 892
 893 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 894 {
 895         const struct sr_dev_inst *sdi;
 896         struct dslogic_trigger_pos *tpos;
 897         struct dev_context *devc;
 898
 899         sdi = transfer->user_data;
 900         devc = sdi->priv;
 901         if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
 902                 sr_dbg("Trigger transfer canceled.");
 903                 /* Terminate session. */
 904                 std_session_send_df_end(sdi);
 905                 usb_source_remove(sdi->session, devc->ctx);
 906                 devc->num_transfers = 0;
 907                 g_free(devc->transfers);
 908                 if (devc->stl) {
 909                         soft_trigger_logic_free(devc->stl);
 910                         devc->stl = NULL;
 911                 }
 912         } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 913                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 914                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 915                 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
 916                         tpos->ram_saddr, tpos->remain_cnt);
 917                 devc->trigger_pos = tpos->real_pos;
 918                 g_free(tpos);
 919                 start_transfers(sdi);
 920         }
 921         libusb_free_transfer(transfer);
 922 }
 923
 924 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 925 {
 926         struct sr_usb_dev_inst *usb;
 927         struct libusb_transfer *transfer;
 928         struct dslogic_trigger_pos *tpos;
 929         struct dev_context *devc;
 930         int ret;
 931
 932         usb = sdi->conn;
 933         devc = sdi->priv;
 934
 935         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 936                 return ret;
 937
 938         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 939                 return ret;
 940
 941         /* If this is a DSLogic Pro, set the voltage threshold. */
 942         if (!strcmp(devc->profile->model, "DSLogic Pro")){
 943                 if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
 944                         dslogic_set_vth(sdi, 1.4);
 945                 } else {
 946                         dslogic_set_vth(sdi, 3.3);
 947                 }
 948         }
 949
 950         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 951                 return ret;
 952
 953         sr_dbg("Getting trigger.");
 954         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 955         transfer = libusb_alloc_transfer(0);
 956         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 957                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 958                         dslogic_trigger_receive, (void *)sdi, 0);
 959         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 960                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 961                 libusb_free_transfer(transfer);
 962                 g_free(tpos);
 963                 return SR_ERR;
 964         }
 965
 966         devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
 967         if (!devc->transfers) {
 968                 sr_err("USB trigger_pos transfer malloc failed.");
 969                 return SR_ERR_MALLOC;
 970         }
 971         devc->num_transfers = 1;
 972         devc->submitted_transfers++;
 973         devc->transfers[0] = transfer;
 974
 975         return ret;
 976 }
 977
 978 static int configure_channels(const struct sr_dev_inst *sdi)
 979 {
 980         struct dev_context *devc;
 981         const GSList *l;
 982         int p;
 983         struct sr_channel *ch;
 984
 985         devc = sdi->priv;
 986
 987         g_slist_free(devc->enabled_analog_channels);
 988         devc->enabled_analog_channels = NULL;
 989         memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled));
 990
 991         for (l = sdi->channels, p = 0; l; l = l->next, p++) {
 992                 ch = l->data;
 993                 if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
 994                         devc->ch_enabled[p] = ch->enabled;
 995                         devc->enabled_analog_channels =
 996                             g_slist_append(devc->enabled_analog_channels, ch);
 997                 }
 998         }
 999
1000         return SR_OK;
1001 }
1002
1003 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
1004 {
1005         struct sr_dev_driver *di;
1006         struct drv_context *drvc;
1007         struct dev_context *devc;
1008         int timeout, ret;
1009         size_t size;
1010
1011         if (sdi->status != SR_ST_ACTIVE)
1012                 return SR_ERR_DEV_CLOSED;
1013
1014         di = sdi->driver;
1015         drvc = di->context;
1016         devc = sdi->priv;
1017
1018         devc->ctx = drvc->sr_ctx;
1019         devc->sent_samples = 0;
1020         devc->empty_transfer_count = 0;
1021         devc->acq_aborted = FALSE;
1022
1023         if (configure_channels(sdi) != SR_OK) {
1024                 sr_err("Failed to configure channels.");
1025                 return SR_ERR;
1026         }
1027
1028         timeout = fx2lafw_get_timeout(devc);
1029         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
1030
1031         if (devc->dslogic) {
1032                 dslogic_trigger_request(sdi);
1033         } else {
1034                 size = fx2lafw_get_buffer_size(devc);
1035                 /* Prepare for analog sampling. */
1036                 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
1037                         /* We need a buffer half the size of a transfer. */
1038                         devc->logic_buffer = g_try_malloc(size / 2);
1039                         devc->analog_buffer = g_try_malloc(
1040                                 sizeof(float) * size / 2);
1041                 }
1042                 start_transfers(sdi);
1043                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
1044                         fx2lafw_abort_acquisition(devc);
1045                         return ret;
1046                 }
1047         }
1048
1049         return SR_OK;
1050 }
1051
1052 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1053 {
1054         struct dev_context *devc;
1055
1056         devc = sdi->priv;
1057
1058         if (devc->dslogic)
1059                 dslogic_stop_acquisition(sdi);
1060
1061         fx2lafw_abort_acquisition(sdi->priv);
1062
1063         return SR_OK;
1064 }
1065
1066 static struct sr_dev_driver fx2lafw_driver_info = {
1067         .name = "fx2lafw",
1068         .longname = "fx2lafw (generic driver for FX2 based LAs)",
1069         .api_version = 1,
1070         .init = std_init,
1071         .cleanup = std_cleanup,
1072         .scan = scan,
1073         .dev_list = std_dev_list,
1074         .dev_clear = dev_clear,
1075         .config_get = config_get,
1076         .config_set = config_set,
1077         .config_list = config_list,
1078         .dev_open = dev_open,
1079         .dev_close = dev_close,
1080         .dev_acquisition_start = dev_acquisition_start,
1081         .dev_acquisition_stop = dev_acquisition_stop,
1082         .context = NULL,
1083 };
1084 SR_REGISTER_DEV_DRIVER(fx2lafw_driver_info);