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