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