src/hardware/fx2lafw/api.c

   1 /*
   2  * This file is part of the libsigrok project.
   3  *
   4  * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
   5  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include "protocol.h"
  23 #include "dslogic.h"
  24 #include <math.h>
  25
  26 static const struct fx2lafw_profile supported_fx2[] = {
  27         /*
  28          * CWAV USBee AX
  29          * EE Electronics ESLA201A
  30          * ARMFLY AX-Pro
  31          */
  32         { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
  33                 "fx2lafw-cwav-usbeeax.fw",
  34                 DEV_CAPS_AX_ANALOG, NULL, NULL},
  35         /*
  36          * CWAV USBee DX
  37          * XZL-Studio DX
  38          */
  39         { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
  40                 "fx2lafw-cwav-usbeedx.fw",
  41                 DEV_CAPS_16BIT, NULL, NULL },
  42
  43         /*
  44          * CWAV USBee SX
  45          */
  46         { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
  47                 "fx2lafw-cwav-usbeesx.fw",
  48                 0, NULL, NULL},
  49
  50         /* DreamSourceLab DSLogic (before FW upload) */
  51         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  52                 "dreamsourcelab-dslogic-fx2.fw",
  53                 DEV_CAPS_16BIT, NULL, NULL},
  54         /* DreamSourceLab DSLogic (after FW upload) */
  55         { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
  56                 "dreamsourcelab-dslogic-fx2.fw",
  57                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  58
  59         /* DreamSourceLab DSCope (before FW upload) */
  60         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  61                 "dreamsourcelab-dscope-fx2.fw",
  62                 DEV_CAPS_16BIT, NULL, NULL},
  63         /* DreamSourceLab DSCope (after FW upload) */
  64         { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
  65                 "dreamsourcelab-dscope-fx2.fw",
  66                 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
  67
  68         /* DreamSourceLab DSLogic Pro (before FW upload) */
  69         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  70                 "dreamsourcelab-dslogic-pro-fx2.fw",
  71                 DEV_CAPS_16BIT, NULL, NULL},
  72         /* DreamSourceLab DSLogic Pro (after FW upload) */
  73         { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
  74                 "dreamsourcelab-dslogic-pro-fx2.fw",
  75                 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
  76
  77         /*
  78          * Saleae Logic
  79          * EE Electronics ESLA100
  80          * Robomotic MiniLogic
  81          * Robomotic BugLogic 3
  82          */
  83         { 0x0925, 0x3881, "Saleae", "Logic", NULL,
  84                 "fx2lafw-saleae-logic.fw",
  85                 0, NULL, NULL},
  86
  87         /*
  88          * Default Cypress FX2 without EEPROM, e.g.:
  89          * Lcsoft Mini Board
  90          * Braintechnology USB Interface V2.x
  91          */
  92         { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
  93                 "fx2lafw-cypress-fx2.fw",
  94                 DEV_CAPS_16BIT, NULL, NULL },
  95
  96         /*
  97          * Braintechnology USB-LPS
  98          */
  99         { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
 100                 "fx2lafw-braintechnology-usb-lps.fw",
 101                 DEV_CAPS_16BIT, NULL, NULL },
 102
 103         /*
 104          * sigrok FX2 based 8-channel logic analyzer
 105          */
 106         { 0x1d50, 0x608c, "sigrok", "FX2 LA (8ch)", NULL,
 107                 "fx2lafw-sigrok-fx2-8ch.fw",
 108                 0, NULL, NULL},
 109
 110         /*
 111          * sigrok FX2 based 16-channel logic analyzer
 112          */
 113         { 0x1d50, 0x608d, "sigrok", "FX2 LA (16ch)", NULL,
 114                 "fx2lafw-sigrok-fx2-16ch.fw",
 115                 DEV_CAPS_16BIT, NULL, NULL },
 116
 117         ALL_ZERO
 118 };
 119
 120 static const uint32_t drvopts[] = {
 121         SR_CONF_LOGIC_ANALYZER,
 122 };
 123
 124 static const uint32_t scanopts[] = {
 125         SR_CONF_CONN,
 126 };
 127
 128 static const uint32_t devopts[] = {
 129         SR_CONF_CONTINUOUS,
 130         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 131         SR_CONF_CONN | SR_CONF_GET,
 132         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 133         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 134         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 135 };
 136
 137 static const uint32_t dslogic_devopts[] = {
 138         SR_CONF_CONTINUOUS | SR_CONF_SET | SR_CONF_GET,
 139         SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
 140         SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 141         SR_CONF_CONN | SR_CONF_GET,
 142         SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 143         SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
 144         SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
 145         SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET,
 146         SR_CONF_CLOCK_EDGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
 147 };
 148
 149 static const int32_t soft_trigger_matches[] = {
 150         SR_TRIGGER_ZERO,
 151         SR_TRIGGER_ONE,
 152         SR_TRIGGER_RISING,
 153         SR_TRIGGER_FALLING,
 154         SR_TRIGGER_EDGE,
 155 };
 156
 157 /* Names assigned to available edge slope choices. */
 158 static const char *const signal_edge_names[] = {
 159         [DS_EDGE_RISING] = "rising",
 160         [DS_EDGE_FALLING] = "falling",
 161 };
 162
 163 static const struct {
 164         int range;
 165         gdouble low;
 166         gdouble high;
 167 } volt_thresholds[] = {
 168         { DS_VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
 169         { DS_VOLTAGE_RANGE_5_V, 1.4, 3.6 },
 170 };
 171
 172 static const uint64_t samplerates[] = {
 173         SR_KHZ(20),
 174         SR_KHZ(25),
 175         SR_KHZ(50),
 176         SR_KHZ(100),
 177         SR_KHZ(200),
 178         SR_KHZ(250),
 179         SR_KHZ(500),
 180         SR_MHZ(1),
 181         SR_MHZ(2),
 182         SR_MHZ(3),
 183         SR_MHZ(4),
 184         SR_MHZ(6),
 185         SR_MHZ(8),
 186         SR_MHZ(12),
 187         SR_MHZ(16),
 188         SR_MHZ(24),
 189 };
 190
 191 static const uint64_t dslogic_samplerates[] = {
 192         SR_KHZ(10),
 193         SR_KHZ(20),
 194         SR_KHZ(50),
 195         SR_KHZ(100),
 196         SR_KHZ(200),
 197         SR_KHZ(500),
 198         SR_MHZ(1),
 199         SR_MHZ(2),
 200         SR_MHZ(5),
 201         SR_MHZ(10),
 202         SR_MHZ(20),
 203         SR_MHZ(25),
 204         SR_MHZ(50),
 205         SR_MHZ(100),
 206         SR_MHZ(200),
 207         SR_MHZ(400),
 208 };
 209
 210 static GSList *scan(struct sr_dev_driver *di, GSList *options)
 211 {
 212         struct drv_context *drvc;
 213         struct dev_context *devc;
 214         struct sr_dev_inst *sdi;
 215         struct sr_usb_dev_inst *usb;
 216         struct sr_channel *ch;
 217         struct sr_channel_group *cg;
 218         struct sr_config *src;
 219         const struct fx2lafw_profile *prof;
 220         GSList *l, *devices, *conn_devices;
 221         gboolean has_firmware;
 222         struct libusb_device_descriptor des;
 223         libusb_device **devlist;
 224         struct libusb_device_handle *hdl;
 225         int ret, i, j;
 226         int num_logic_channels = 0, num_analog_channels = 0;
 227         const char *conn;
 228         char manufacturer[64], product[64], serial_num[64], connection_id[64];
 229         char channel_name[16];
 230
 231         drvc = di->context;
 232
 233         conn = NULL;
 234         for (l = options; l; l = l->next) {
 235                 src = l->data;
 236                 switch (src->key) {
 237                 case SR_CONF_CONN:
 238                         conn = g_variant_get_string(src->data, NULL);
 239                         break;
 240                 }
 241         }
 242         if (conn)
 243                 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
 244         else
 245                 conn_devices = NULL;
 246
 247         /* Find all fx2lafw compatible devices and upload firmware to them. */
 248         devices = NULL;
 249         libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
 250         for (i = 0; devlist[i]; i++) {
 251                 if (conn) {
 252                         usb = NULL;
 253                         for (l = conn_devices; l; l = l->next) {
 254                                 usb = l->data;
 255                                 if (usb->bus == libusb_get_bus_number(devlist[i])
 256                                         && usb->address == libusb_get_device_address(devlist[i]))
 257                                         break;
 258                         }
 259                         if (!l)
 260                                 /* This device matched none of the ones that
 261                                  * matched the conn specification. */
 262                                 continue;
 263                 }
 264
 265                 libusb_get_device_descriptor( devlist[i], &des);
 266
 267                 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
 268                         continue;
 269
 270                 if (des.iManufacturer == 0) {
 271                         manufacturer[0] = '\0';
 272                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 273                                 des.iManufacturer, (unsigned char *) manufacturer,
 274                                 sizeof(manufacturer))) < 0) {
 275                         sr_warn("Failed to get manufacturer string descriptor: %s.",
 276                                 libusb_error_name(ret));
 277                         continue;
 278                 }
 279
 280                 if (des.iProduct == 0) {
 281                         product[0] = '\0';
 282                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 283                                 des.iProduct, (unsigned char *) product,
 284                                 sizeof(product))) < 0) {
 285                         sr_warn("Failed to get product string descriptor: %s.",
 286                                 libusb_error_name(ret));
 287                         continue;
 288                 }
 289
 290                 if (des.iSerialNumber == 0) {
 291                         serial_num[0] = '\0';
 292                 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
 293                                 des.iSerialNumber, (unsigned char *) serial_num,
 294                                 sizeof(serial_num))) < 0) {
 295                         sr_warn("Failed to get serial number string descriptor: %s.",
 296                                 libusb_error_name(ret));
 297                         continue;
 298                 }
 299
 300                 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
 301
 302                 libusb_close(hdl);
 303
 304                 prof = NULL;
 305                 for (j = 0; supported_fx2[j].vid; j++) {
 306                         if (des.idVendor == supported_fx2[j].vid &&
 307                                         des.idProduct == supported_fx2[j].pid &&
 308                                         (!supported_fx2[j].usb_manufacturer ||
 309                                          !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
 310                                         (!supported_fx2[j].usb_manufacturer ||
 311                                          !strcmp(product, supported_fx2[j].usb_product))) {
 312                                 prof = &supported_fx2[j];
 313                                 break;
 314                         }
 315                 }
 316
 317                 /* Skip if the device was not found. */
 318                 if (!prof)
 319                         continue;
 320
 321                 sdi = g_malloc0(sizeof(struct sr_dev_inst));
 322                 sdi->status = SR_ST_INITIALIZING;
 323                 sdi->vendor = g_strdup(prof->vendor);
 324                 sdi->model = g_strdup(prof->model);
 325                 sdi->version = g_strdup(prof->model_version);
 326                 sdi->driver = di;
 327                 sdi->serial_num = g_strdup(serial_num);
 328                 sdi->connection_id = g_strdup(connection_id);
 329
 330                 /* Fill in channellist according to this device's profile. */
 331                 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
 332                 num_analog_channels = prof->dev_caps & DEV_CAPS_AX_ANALOG ? 1 : 0;
 333
 334                 /* Logic channels, all in one channel group. */
 335                 cg = g_malloc0(sizeof(struct sr_channel_group));
 336                 cg->name = g_strdup("Logic");
 337                 for (j = 0; j < num_logic_channels; j++) {
 338                         sprintf(channel_name, "D%d", j);
 339                         ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
 340                                                 TRUE, channel_name);
 341                         cg->channels = g_slist_append(cg->channels, ch);
 342                 }
 343                 sdi->channel_groups = g_slist_append(NULL, cg);
 344
 345                 for (j = 0; j < num_analog_channels; j++) {
 346                         snprintf(channel_name, 16, "A%d", j);
 347                         ch = sr_channel_new(sdi, j + num_logic_channels,
 348                                         SR_CHANNEL_ANALOG, TRUE, channel_name);
 349
 350                         /* Every analog channel gets its own channel group. */
 351                         cg = g_malloc0(sizeof(struct sr_channel_group));
 352                         cg->name = g_strdup(channel_name);
 353                         cg->channels = g_slist_append(NULL, ch);
 354                         sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
 355                 }
 356
 357                 devc = fx2lafw_dev_new();
 358                 devc->profile = prof;
 359                 if ((prof->dev_caps & DEV_CAPS_16BIT) || (prof->dev_caps & DEV_CAPS_AX_ANALOG))
 360                         devc->sample_wide = TRUE;
 361                 sdi->priv = devc;
 362                 drvc->instances = g_slist_append(drvc->instances, sdi);
 363                 devices = g_slist_append(devices, sdi);
 364
 365                 if (!strcmp(prof->model, "DSLogic")
 366                                 || !strcmp(prof->model, "DSLogic Pro")
 367                                 || !strcmp(prof->model, "DSCope")) {
 368                         devc->dslogic = TRUE;
 369                         devc->samplerates = dslogic_samplerates;
 370                         devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
 371                         has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
 372                                         || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
 373                 } else {
 374                         devc->dslogic = FALSE;
 375                         devc->samplerates = samplerates;
 376                         devc->num_samplerates = ARRAY_SIZE(samplerates);
 377                         has_firmware = match_manuf_prod(devlist[i],
 378                                         "sigrok", "fx2lafw");
 379                 }
 380
 381                 if (has_firmware) {
 382                         /* Already has the firmware, so fix the new address. */
 383                         sr_dbg("Found an fx2lafw device.");
 384                         sdi->status = SR_ST_INACTIVE;
 385                         sdi->inst_type = SR_INST_USB;
 386                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 387                                         libusb_get_device_address(devlist[i]), NULL);
 388                 } else {
 389                         if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
 390                                         USB_CONFIGURATION, prof->firmware) == SR_OK)
 391                                 /* Store when this device's FW was updated. */
 392                                 devc->fw_updated = g_get_monotonic_time();
 393                         else
 394                                 sr_err("Firmware upload failed for "
 395                                        "device %d.%d (logical).",
 396                                        libusb_get_bus_number(devlist[i]),
 397                                        libusb_get_device_address(devlist[i]));
 398                         sdi->inst_type = SR_INST_USB;
 399                         sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
 400                                         0xff, NULL);
 401                 }
 402         }
 403         libusb_free_device_list(devlist, 1);
 404         g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
 405
 406         return devices;
 407 }
 408
 409 static void clear_dev_context(void *priv)
 410 {
 411         struct dev_context *devc;
 412
 413         devc = priv;
 414         g_slist_free(devc->enabled_analog_channels);
 415         g_free(devc);
 416 }
 417
 418 static int dev_clear(const struct sr_dev_driver *di)
 419 {
 420         return std_dev_clear(di, clear_dev_context);
 421 }
 422
 423 static int dev_open(struct sr_dev_inst *sdi)
 424 {
 425         struct sr_dev_driver *di = sdi->driver;
 426         struct sr_usb_dev_inst *usb;
 427         struct dev_context *devc;
 428         const char *fpga_firmware = NULL;
 429         int ret;
 430         int64_t timediff_us, timediff_ms;
 431
 432         devc = sdi->priv;
 433         usb = sdi->conn;
 434
 435         /*
 436          * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
 437          * milliseconds for the FX2 to renumerate.
 438          */
 439         ret = SR_ERR;
 440         if (devc->fw_updated > 0) {
 441                 sr_info("Waiting for device to reset.");
 442                 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
 443                 g_usleep(300 * 1000);
 444                 timediff_ms = 0;
 445                 while (timediff_ms < MAX_RENUM_DELAY_MS) {
 446                         if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
 447                                 break;
 448                         g_usleep(100 * 1000);
 449
 450                         timediff_us = g_get_monotonic_time() - devc->fw_updated;
 451                         timediff_ms = timediff_us / 1000;
 452                         sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
 453                 }
 454                 if (ret != SR_OK) {
 455                         sr_err("Device failed to renumerate.");
 456                         return SR_ERR;
 457                 }
 458                 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
 459         } else {
 460                 sr_info("Firmware upload was not needed.");
 461                 ret = fx2lafw_dev_open(sdi, di);
 462         }
 463
 464         if (ret != SR_OK) {
 465                 sr_err("Unable to open device.");
 466                 return SR_ERR;
 467         }
 468
 469         ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
 470         if (ret != 0) {
 471                 switch (ret) {
 472                 case LIBUSB_ERROR_BUSY:
 473                         sr_err("Unable to claim USB interface. Another "
 474                                "program or driver has already claimed it.");
 475                         break;
 476                 case LIBUSB_ERROR_NO_DEVICE:
 477                         sr_err("Device has been disconnected.");
 478                         break;
 479                 default:
 480                         sr_err("Unable to claim interface: %s.",
 481                                libusb_error_name(ret));
 482                         break;
 483                 }
 484
 485                 return SR_ERR;
 486         }
 487
 488         if (devc->dslogic) {
 489                 if (!strcmp(devc->profile->model, "DSLogic")) {
 490                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V)
 491                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_3V3;
 492                         else
 493                                 fpga_firmware = DSLOGIC_FPGA_FIRMWARE_5V;
 494                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")){
 495                         fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
 496                 } else if (!strcmp(devc->profile->model, "DSCope")) {
 497                         fpga_firmware = DSCOPE_FPGA_FIRMWARE;
 498                 }
 499
 500                 if ((ret = dslogic_fpga_firmware_upload(sdi, fpga_firmware)) != SR_OK)
 501                         return ret;
 502         }
 503         if (devc->cur_samplerate == 0) {
 504                 /* Samplerate hasn't been set; default to the slowest one. */
 505                 devc->cur_samplerate = devc->samplerates[0];
 506         }
 507
 508         return SR_OK;
 509 }
 510
 511 static int dev_close(struct sr_dev_inst *sdi)
 512 {
 513         struct sr_usb_dev_inst *usb;
 514
 515         usb = sdi->conn;
 516
 517         if (!usb->devhdl)
 518                 return SR_ERR;
 519
 520         sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
 521                 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
 522         libusb_release_interface(usb->devhdl, USB_INTERFACE);
 523         libusb_close(usb->devhdl);
 524         usb->devhdl = NULL;
 525         sdi->status = SR_ST_INACTIVE;
 526
 527         return SR_OK;
 528 }
 529
 530 static int config_get(uint32_t key, GVariant **data,
 531         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 532 {
 533         struct dev_context *devc;
 534         struct sr_usb_dev_inst *usb;
 535         GVariant *range[2];
 536         unsigned int i;
 537         char str[128];
 538
 539         (void)cg;
 540
 541         if (!sdi)
 542                 return SR_ERR_ARG;
 543
 544         devc = sdi->priv;
 545
 546         switch (key) {
 547         case SR_CONF_CONN:
 548                 if (!sdi->conn)
 549                         return SR_ERR_ARG;
 550                 usb = sdi->conn;
 551                 if (usb->address == 255)
 552                         /* Device still needs to re-enumerate after firmware
 553                          * upload, so we don't know its (future) address. */
 554                         return SR_ERR;
 555                 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
 556                 *data = g_variant_new_string(str);
 557                 break;
 558         case SR_CONF_VOLTAGE_THRESHOLD:
 559                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 560                         if (volt_thresholds[i].range != devc->dslogic_voltage_threshold)
 561                                 continue;
 562                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 563                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 564                         *data = g_variant_new_tuple(range, 2);
 565                         break;
 566                 }
 567                 break;
 568         case SR_CONF_LIMIT_SAMPLES:
 569                 *data = g_variant_new_uint64(devc->limit_samples);
 570                 break;
 571         case SR_CONF_SAMPLERATE:
 572                 *data = g_variant_new_uint64(devc->cur_samplerate);
 573                 break;
 574         case SR_CONF_CAPTURE_RATIO:
 575                 *data = g_variant_new_uint64(devc->capture_ratio);
 576                 break;
 577         case SR_CONF_EXTERNAL_CLOCK:
 578                 *data = g_variant_new_boolean(devc->dslogic_external_clock);
 579                 break;
 580         case SR_CONF_CONTINUOUS:
 581                 *data = g_variant_new_boolean(devc->dslogic_continuous_mode);
 582                 break;
 583         case SR_CONF_CLOCK_EDGE:
 584                 i = devc->dslogic_clock_edge;
 585                 if (i >= ARRAY_SIZE(signal_edge_names))
 586                         return SR_ERR_BUG;
 587                 *data = g_variant_new_string(signal_edge_names[0]);
 588                 break;
 589         default:
 590                 return SR_ERR_NA;
 591         }
 592
 593         return SR_OK;
 594 }
 595
 596 /*
 597  * Helper for mapping a string-typed configuration value to an index
 598  * within a table of possible values.
 599  */
 600 static int lookup_index(GVariant *value, const char *const *table, int len)
 601 {
 602         const char *entry;
 603         int i;
 604
 605         entry = g_variant_get_string(value, NULL);
 606         if (!entry)
 607                 return -1;
 608
 609         /* Linear search is fine for very small tables. */
 610         for (i = 0; i < len; i++) {
 611                 if (strcmp(entry, table[i]) == 0)
 612                         return i;
 613         }
 614
 615         return -1;
 616 }
 617
 618 static int config_set(uint32_t key, GVariant *data,
 619         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 620 {
 621         struct dev_context *devc;
 622         uint64_t arg;
 623         int i, ret;
 624         gdouble low, high;
 625
 626         (void)cg;
 627
 628         if (!sdi)
 629                 return SR_ERR_ARG;
 630
 631         if (sdi->status != SR_ST_ACTIVE)
 632                 return SR_ERR;
 633
 634         devc = sdi->priv;
 635
 636         ret = SR_OK;
 637
 638         switch (key) {
 639         case SR_CONF_SAMPLERATE:
 640                 arg = g_variant_get_uint64(data);
 641                 for (i = 0; i < devc->num_samplerates; i++) {
 642                         if (devc->samplerates[i] == arg) {
 643                                 devc->cur_samplerate = arg;
 644                                 break;
 645                         }
 646                 }
 647                 if (i == devc->num_samplerates)
 648                         ret = SR_ERR_ARG;
 649                 break;
 650         case SR_CONF_LIMIT_SAMPLES:
 651                 devc->limit_samples = g_variant_get_uint64(data);
 652                 break;
 653         case SR_CONF_CAPTURE_RATIO:
 654                 devc->capture_ratio = g_variant_get_uint64(data);
 655                 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
 656                 break;
 657         case SR_CONF_VOLTAGE_THRESHOLD:
 658                 g_variant_get(data, "(dd)", &low, &high);
 659                 ret = SR_ERR_ARG;
 660                 for (i = 0; (unsigned int)i < ARRAY_SIZE(volt_thresholds); i++) {
 661                         if (fabs(volt_thresholds[i].low - low) < 0.1 &&
 662                             fabs(volt_thresholds[i].high - high) < 0.1) {
 663                                 devc->dslogic_voltage_threshold = volt_thresholds[i].range;
 664                                 break;
 665                         }
 666                 }
 667                 if (!strcmp(devc->profile->model, "DSLogic")) {
 668                         if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_5_V)
 669                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_5V);
 670                         else
 671                                 ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_FPGA_FIRMWARE_3V3);
 672                 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
 673                         ret = dslogic_fpga_firmware_upload(sdi, DSLOGIC_PRO_FPGA_FIRMWARE);
 674                 }
 675                 break;
 676         case SR_CONF_EXTERNAL_CLOCK:
 677                 devc->dslogic_external_clock = g_variant_get_boolean(data);
 678                 break;
 679         case SR_CONF_CONTINUOUS:
 680                 devc->dslogic_continuous_mode = g_variant_get_boolean(data);
 681                 break;
 682         case SR_CONF_CLOCK_EDGE:
 683                 i = lookup_index(data, signal_edge_names,
 684                                    ARRAY_SIZE(signal_edge_names));
 685                 if (i < 0)
 686                         return SR_ERR_ARG;
 687                 devc->dslogic_clock_edge = i;
 688                 break;
 689         default:
 690                 ret = SR_ERR_NA;
 691         }
 692
 693         return ret;
 694 }
 695
 696 static int config_list(uint32_t key, GVariant **data,
 697         const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
 698 {
 699         struct dev_context *devc;
 700         GVariant *gvar, *range[2];
 701         GVariantBuilder gvb;
 702         unsigned int i;
 703
 704         (void)cg;
 705
 706         switch (key) {
 707         case SR_CONF_SCAN_OPTIONS:
 708                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 709                                 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
 710                 break;
 711         case SR_CONF_DEVICE_OPTIONS:
 712                 if (!sdi) {
 713                         *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 714                                 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
 715                 } else {
 716                         devc = sdi->priv;
 717                         if (!devc->dslogic)
 718                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 719                                                                   devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
 720                         else
 721                                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
 722                                                                   dslogic_devopts, ARRAY_SIZE(dslogic_devopts), sizeof(uint32_t));
 723                 }
 724                 break;
 725         case SR_CONF_VOLTAGE_THRESHOLD:
 726                 if (!sdi->priv)
 727                         return SR_ERR_ARG;
 728                 devc = sdi->priv;
 729                 if (!devc->dslogic)
 730                         return SR_ERR_NA;
 731                 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
 732                 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
 733                         range[0] = g_variant_new_double(volt_thresholds[i].low);
 734                         range[1] = g_variant_new_double(volt_thresholds[i].high);
 735                         gvar = g_variant_new_tuple(range, 2);
 736                         g_variant_builder_add_value(&gvb, gvar);
 737                 }
 738                 *data = g_variant_builder_end(&gvb);
 739                 break;
 740         case SR_CONF_SAMPLERATE:
 741                 devc = sdi->priv;
 742                 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
 743                 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
 744                                 devc->num_samplerates, sizeof(uint64_t));
 745                 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
 746                 *data = g_variant_builder_end(&gvb);
 747                 break;
 748         case SR_CONF_TRIGGER_MATCH:
 749                 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
 750                                 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
 751                                 sizeof(int32_t));
 752                 break;
 753         case SR_CONF_CLOCK_EDGE:
 754                 *data = g_variant_new_strv(signal_edge_names,
 755                         ARRAY_SIZE(signal_edge_names));
 756                 break;
 757         default:
 758                 return SR_ERR_NA;
 759         }
 760
 761         return SR_OK;
 762 }
 763
 764 static int receive_data(int fd, int revents, void *cb_data)
 765 {
 766         struct timeval tv;
 767         struct drv_context *drvc;
 768
 769         (void)fd;
 770         (void)revents;
 771
 772         drvc = (struct drv_context *)cb_data;
 773
 774         tv.tv_sec = tv.tv_usec = 0;
 775         libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
 776
 777         return TRUE;
 778 }
 779
 780 static int start_transfers(const struct sr_dev_inst *sdi)
 781 {
 782         struct dev_context *devc;
 783         struct sr_usb_dev_inst *usb;
 784         struct sr_trigger *trigger;
 785         struct libusb_transfer *transfer;
 786         unsigned int i, num_transfers;
 787         int endpoint, timeout, ret;
 788         unsigned char *buf;
 789         size_t size;
 790
 791         devc = sdi->priv;
 792         usb = sdi->conn;
 793
 794         devc->sent_samples = 0;
 795         devc->acq_aborted = FALSE;
 796         devc->empty_transfer_count = 0;
 797
 798         if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
 799                 int pre_trigger_samples = 0;
 800                 if (devc->limit_samples > 0)
 801                         pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
 802                 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
 803                 if (!devc->stl)
 804                         return SR_ERR_MALLOC;
 805                 devc->trigger_fired = FALSE;
 806         } else
 807                 devc->trigger_fired = TRUE;
 808
 809         num_transfers = fx2lafw_get_number_of_transfers(devc);
 810
 811         //if (devc->dslogic)
 812         //      num_transfers = dslogic_get_number_of_transfers(devc);
 813
 814         if (devc->dslogic) {
 815                 if (devc->cur_samplerate == SR_MHZ(100))
 816                         num_transfers = 16;
 817                 else if (devc->cur_samplerate == SR_MHZ(200))
 818                         num_transfers = 8;
 819                 else if (devc->cur_samplerate == SR_MHZ(400))
 820                         num_transfers = 4;
 821         }
 822
 823         size = fx2lafw_get_buffer_size(devc);
 824         devc->submitted_transfers = 0;
 825
 826         devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
 827         if (!devc->transfers) {
 828                 sr_err("USB transfers malloc failed.");
 829                 return SR_ERR_MALLOC;
 830         }
 831
 832         timeout = fx2lafw_get_timeout(devc);
 833         endpoint = devc->dslogic ? 6 : 2;
 834         devc->num_transfers = num_transfers;
 835         for (i = 0; i < num_transfers; i++) {
 836                 if (!(buf = g_try_malloc(size))) {
 837                         sr_err("USB transfer buffer malloc failed.");
 838                         return SR_ERR_MALLOC;
 839                 }
 840                 transfer = libusb_alloc_transfer(0);
 841                 libusb_fill_bulk_transfer(transfer, usb->devhdl,
 842                                 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
 843                                 fx2lafw_receive_transfer, (void *)sdi, timeout);
 844                 sr_info("submitting transfer: %d", i);
 845                 if ((ret = libusb_submit_transfer(transfer)) != 0) {
 846                         sr_err("Failed to submit transfer: %s.",
 847                                libusb_error_name(ret));
 848                         libusb_free_transfer(transfer);
 849                         g_free(buf);
 850                         fx2lafw_abort_acquisition(devc);
 851                         return SR_ERR;
 852                 }
 853                 devc->transfers[i] = transfer;
 854                 devc->submitted_transfers++;
 855         }
 856
 857         if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
 858                 devc->send_data_proc = mso_send_data_proc;
 859         else
 860                 devc->send_data_proc = la_send_data_proc;
 861
 862         std_session_send_df_header(sdi, LOG_PREFIX);
 863
 864         return SR_OK;
 865 }
 866
 867 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
 868 {
 869         const struct sr_dev_inst *sdi;
 870         struct dslogic_trigger_pos *tpos;
 871         struct dev_context *devc;
 872
 873         sdi = transfer->user_data;
 874         devc = sdi->priv;
 875         if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
 876                 sr_dbg("Trigger transfer canceled.");
 877                 /* Terminate session. */
 878                 std_session_send_df_end(sdi, LOG_PREFIX);
 879                 usb_source_remove(sdi->session, devc->ctx);
 880                 devc->num_transfers = 0;
 881                 g_free(devc->transfers);
 882                 if (devc->stl) {
 883                         soft_trigger_logic_free(devc->stl);
 884                         devc->stl = NULL;
 885                 }
 886         } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
 887                         && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
 888                 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
 889                 sr_info("tpos real_pos %d ram_saddr %d cnt %d", tpos->real_pos,
 890                         tpos->ram_saddr, tpos->remain_cnt);
 891                 devc->trigger_pos = tpos->real_pos;
 892                 g_free(tpos);
 893                 start_transfers(sdi);
 894         }
 895         libusb_free_transfer(transfer);
 896 }
 897
 898 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
 899 {
 900         struct sr_usb_dev_inst *usb;
 901         struct libusb_transfer *transfer;
 902         struct dslogic_trigger_pos *tpos;
 903         struct dev_context *devc;
 904         int ret;
 905
 906         usb = sdi->conn;
 907         devc = sdi->priv;
 908
 909         if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
 910                 return ret;
 911
 912         if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
 913                 return ret;
 914
 915         /* If this is a DSLogic Pro, set the voltage threshold. */
 916         if (!strcmp(devc->profile->model, "DSLogic Pro")){
 917                 if (devc->dslogic_voltage_threshold == DS_VOLTAGE_RANGE_18_33_V) {
 918                         dslogic_set_vth(sdi, 1.4);
 919                 } else {
 920                         dslogic_set_vth(sdi, 3.3);
 921                 }
 922         }
 923
 924         if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
 925                 return ret;
 926
 927         sr_dbg("Getting trigger.");
 928         tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
 929         transfer = libusb_alloc_transfer(0);
 930         libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
 931                         (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
 932                         dslogic_trigger_receive, (void *)sdi, 0);
 933         if ((ret = libusb_submit_transfer(transfer)) < 0) {
 934                 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
 935                 libusb_free_transfer(transfer);
 936                 g_free(tpos);
 937                 return SR_ERR;
 938         }
 939
 940         devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
 941         if (!devc->transfers) {
 942                 sr_err("USB trigger_pos transfer malloc failed.");
 943                 return SR_ERR_MALLOC;
 944         }
 945         devc->num_transfers = 1;
 946         devc->submitted_transfers++;
 947         devc->transfers[0] = transfer;
 948
 949         return ret;
 950 }
 951
 952 static int configure_channels(const struct sr_dev_inst *sdi)
 953 {
 954         struct dev_context *devc;
 955         const GSList *l;
 956         int p;
 957         struct sr_channel *ch;
 958
 959         devc = sdi->priv;
 960
 961         g_slist_free(devc->enabled_analog_channels);
 962         devc->enabled_analog_channels = NULL;
 963         memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled));
 964
 965         for (l = sdi->channels, p = 0; l; l = l->next, p++) {
 966                 ch = l->data;
 967                 if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
 968                         devc->ch_enabled[p] = ch->enabled;
 969                         devc->enabled_analog_channels =
 970                             g_slist_append(devc->enabled_analog_channels, ch);
 971                 }
 972         }
 973
 974         return SR_OK;
 975 }
 976
 977 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
 978 {
 979         struct sr_dev_driver *di;
 980         struct drv_context *drvc;
 981         struct dev_context *devc;
 982         int timeout, ret;
 983         size_t size;
 984
 985         if (sdi->status != SR_ST_ACTIVE)
 986                 return SR_ERR_DEV_CLOSED;
 987
 988         di = sdi->driver;
 989         drvc = di->context;
 990         devc = sdi->priv;
 991
 992         devc->ctx = drvc->sr_ctx;
 993         devc->sent_samples = 0;
 994         devc->empty_transfer_count = 0;
 995         devc->acq_aborted = FALSE;
 996
 997         if (configure_channels(sdi) != SR_OK) {
 998                 sr_err("Failed to configure channels.");
 999                 return SR_ERR;
1000         }
1001
1002         timeout = fx2lafw_get_timeout(devc);
1003         usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
1004
1005         if (devc->dslogic) {
1006                 dslogic_trigger_request(sdi);
1007         } else {
1008                 size = fx2lafw_get_buffer_size(devc);
1009                 /* Prepare for analog sampling. */
1010                 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
1011                         /* We need a buffer half the size of a transfer. */
1012                         devc->logic_buffer = g_try_malloc(size / 2);
1013                         devc->analog_buffer = g_try_malloc(
1014                                 sizeof(float) * size / 2);
1015                 }
1016                 start_transfers(sdi);
1017                 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
1018                         fx2lafw_abort_acquisition(devc);
1019                         return ret;
1020                 }
1021         }
1022
1023         return SR_OK;
1024 }
1025
1026 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
1027 {
1028         struct dev_context *devc;
1029
1030         devc = sdi->priv;
1031
1032         if (devc->dslogic)
1033                 dslogic_stop_acquisition(sdi);
1034
1035         fx2lafw_abort_acquisition(sdi->priv);
1036
1037         return SR_OK;
1038 }
1039
1040 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
1041         .name = "fx2lafw",
1042         .longname = "fx2lafw (generic driver for FX2 based LAs)",
1043         .api_version = 1,
1044         .init = std_init,
1045         .cleanup = std_cleanup,
1046         .scan = scan,
1047         .dev_list = std_dev_list,
1048         .dev_clear = dev_clear,
1049         .config_get = config_get,
1050         .config_set = config_set,
1051         .config_list = config_list,
1052         .dev_open = dev_open,
1053         .dev_close = dev_close,
1054         .dev_acquisition_start = dev_acquisition_start,
1055         .dev_acquisition_stop = dev_acquisition_stop,
1056         .context = NULL,
1057 };