hardware/zeroplus-logic-cube/zeroplus.c

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <sys/time.h>
  24 #include <inttypes.h>
  25 #include <glib.h>
  26 #include <libusb.h>
  27 #include "libsigrok.h"
  28 #include "libsigrok-internal.h"
  29 #include "analyzer.h"
  30
  31 #define USB_VENDOR                      0x0c12
  32
  33 #define VENDOR_NAME                     "ZEROPLUS"
  34 #define MODEL_NAME                      "Logic Cube LAP-C"
  35 #define MODEL_VERSION                   NULL
  36
  37 #define NUM_PROBES                      16
  38 #define USB_INTERFACE                   0
  39 #define USB_CONFIGURATION               1
  40 #define NUM_TRIGGER_STAGES              4
  41 #define TRIGGER_TYPES                   "01"
  42
  43 #define PACKET_SIZE                     2048    /* ?? */
  44
  45 //#define ZP_EXPERIMENTAL
  46
  47 typedef struct {
  48         unsigned short vid;
  49         unsigned short pid;
  50         char *model_name;
  51         unsigned int channels;
  52         unsigned int sample_depth;      /* In Ksamples/channel */
  53         unsigned int max_sampling_freq;
  54 } model_t;
  55
  56 /*
  57  * Note -- 16032, 16064 and 16128 *usually* -- but not always -- have the
  58  * same 128K sample depth.
  59  */
  60 static model_t zeroplus_models[] = {
  61         {0x0c12, 0x7009, "LAP-C(16064)",  16, 64,   100},
  62         {0x0c12, 0x700A, "LAP-C(16128)",  16, 128,  200},
  63         /* TODO: we don't know anything about these
  64         {0x0c12, 0x700B, "LAP-C(32128)",  32, 128,  200},
  65         {0x0c12, 0x700C, "LAP-C(321000)", 32, 1024, 200},
  66         {0x0c12, 0x700D, "LAP-C(322000)", 32, 2048, 200},
  67         */
  68         {0x0c12, 0x700E, "LAP-C(16032)",  16, 32,   100},
  69         {0x0c12, 0x7016, "LAP-C(162000)", 16, 2048, 200},
  70         { 0, 0, 0, 0, 0, 0 }
  71 };
  72
  73 static const int hwcaps[] = {
  74         SR_HWCAP_LOGIC_ANALYZER,
  75         SR_HWCAP_SAMPLERATE,
  76         SR_HWCAP_CAPTURE_RATIO,
  77
  78         /* These are really implemented in the driver, not the hardware. */
  79         SR_HWCAP_LIMIT_SAMPLES,
  80         0,
  81 };
  82
  83 /*
  84  * ZEROPLUS LAP-C (16032) numbers the 16 probes A0-A7 and B0-B7.
  85  * We currently ignore other untested/unsupported devices here.
  86  */
  87 static const char *probe_names[NUM_PROBES + 1] = {
  88         "A0",
  89         "A1",
  90         "A2",
  91         "A3",
  92         "A4",
  93         "A5",
  94         "A6",
  95         "A7",
  96         "B0",
  97         "B1",
  98         "B2",
  99         "B3",
 100         "B4",
 101         "B5",
 102         "B6",
 103         "B7",
 104         NULL,
 105 };
 106
 107 /* List of struct sr_dev_inst, maintained by dev_open()/dev_close(). */
 108 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
 109 static struct sr_dev_driver *zdi = &zeroplus_logic_cube_driver_info;
 110
 111 static libusb_context *usb_context = NULL;
 112
 113 /*
 114  * The hardware supports more samplerates than these, but these are the
 115  * options hardcoded into the vendor's Windows GUI.
 116  */
 117
 118 /*
 119  * TODO: We shouldn't support 150MHz and 200MHz on devices that don't go up
 120  * that high.
 121  */
 122 static const uint64_t supported_samplerates[] = {
 123         SR_HZ(100),
 124         SR_HZ(500),
 125         SR_KHZ(1),
 126         SR_KHZ(5),
 127         SR_KHZ(25),
 128         SR_KHZ(50),
 129         SR_KHZ(100),
 130         SR_KHZ(200),
 131         SR_KHZ(400),
 132         SR_KHZ(800),
 133         SR_MHZ(1),
 134         SR_MHZ(10),
 135         SR_MHZ(25),
 136         SR_MHZ(50),
 137         SR_MHZ(80),
 138         SR_MHZ(100),
 139         SR_MHZ(150),
 140         SR_MHZ(200),
 141         0,
 142 };
 143
 144 static const struct sr_samplerates samplerates = {
 145         0,
 146         0,
 147         0,
 148         supported_samplerates,
 149 };
 150
 151 /* Private, per-device-instance driver context. */
 152 struct dev_context {
 153         uint64_t cur_samplerate;
 154         uint64_t max_samplerate;
 155         uint64_t limit_samples;
 156         int num_channels; /* TODO: This isn't initialized before it's needed :( */
 157         int memory_size;
 158         unsigned int max_memory_size;
 159         //uint8_t probe_mask;
 160         //uint8_t trigger_mask[NUM_TRIGGER_STAGES];
 161         //uint8_t trigger_value[NUM_TRIGGER_STAGES];
 162         // uint8_t trigger_buffer[NUM_TRIGGER_STAGES];
 163         int trigger;
 164         unsigned int capture_ratio;
 165
 166         /* TODO: this belongs in the device instance */
 167         struct sr_usb_dev_inst *usb;
 168 };
 169
 170 static int hw_dev_close(struct sr_dev_inst *sdi);
 171
 172 static unsigned int get_memory_size(int type)
 173 {
 174         if (type == MEMORY_SIZE_8K)
 175                 return 8 * 1024;
 176         else if (type == MEMORY_SIZE_64K)
 177                 return 64 * 1024;
 178         else if (type == MEMORY_SIZE_128K)
 179                 return 128 * 1024;
 180         else if (type == MEMORY_SIZE_512K)
 181                 return 512 * 1024;
 182         else
 183                 return 0;
 184 }
 185
 186 #if 0
 187 static int configure_probes(const struct sr_dev_inst *sdi)
 188 {
 189         struct dev_context *devc;
 190         const struct sr_probe *probe;
 191         const GSList *l;
 192         int probe_bit, stage, i;
 193         char *tc;
 194
 195         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 196         devc = sdi->priv;
 197
 198         devc->probe_mask = 0;
 199         for (i = 0; i < NUM_TRIGGER_STAGES; i++) {
 200                 devc->trigger_mask[i] = 0;
 201                 devc->trigger_value[i] = 0;
 202         }
 203
 204         stage = -1;
 205         for (l = sdi->probes; l; l = l->next) {
 206                 probe = (struct sr_probe *)l->data;
 207                 if (probe->enabled == FALSE)
 208                         continue;
 209                 probe_bit = 1 << (probe->index);
 210                 devc->probe_mask |= probe_bit;
 211
 212                 if (probe->trigger) {
 213                         stage = 0;
 214                         for (tc = probe->trigger; *tc; tc++) {
 215                                 devc->trigger_mask[stage] |= probe_bit;
 216                                 if (*tc == '1')
 217                                         devc->trigger_value[stage] |= probe_bit;
 218                                 stage++;
 219                                 if (stage > NUM_TRIGGER_STAGES)
 220                                         return SR_ERR;
 221                         }
 222                 }
 223         }
 224
 225         return SR_OK;
 226 }
 227 #endif
 228
 229 static int configure_probes(const struct sr_dev_inst *sdi)
 230 {
 231         struct dev_context *devc;
 232         const GSList *l;
 233         const struct sr_probe *probe;
 234         char *tc;
 235         int type;
 236
 237         /* Note: sdi and sdi->priv are non-NULL, the caller checked this. */
 238         devc = sdi->priv;
 239
 240         for (l = sdi->probes; l; l = l->next) {
 241                 probe = (struct sr_probe *)l->data;
 242                 if (probe->enabled == FALSE)
 243                         continue;
 244
 245                 if ((tc = probe->trigger)) {
 246                         switch (*tc) {
 247                         case '1':
 248                                 type = TRIGGER_HIGH;
 249                                 break;
 250                         case '0':
 251                                 type = TRIGGER_LOW;
 252                                 break;
 253 #if 0
 254                         case 'r':
 255                                 type = TRIGGER_POSEDGE;
 256                                 break;
 257                         case 'f':
 258                                 type = TRIGGER_NEGEDGE;
 259                                 break;
 260                         case 'c':
 261                                 type = TRIGGER_ANYEDGE;
 262                                 break;
 263 #endif
 264                         default:
 265                                 return SR_ERR;
 266                         }
 267                         analyzer_add_trigger(probe->index, type);
 268                         devc->trigger = 1;
 269                 }
 270         }
 271
 272         return SR_OK;
 273 }
 274
 275 static int clear_instances(void)
 276 {
 277         GSList *l;
 278         struct sr_dev_inst *sdi;
 279         struct drv_context *drvc;
 280         struct dev_context *devc;
 281
 282         drvc = zdi->priv;
 283         for (l = drvc->instances; l; l = l->next) {
 284                 sdi = l->data;
 285                 if (!(devc = sdi->priv)) {
 286                         /* Log error, but continue cleaning up the rest. */
 287                         sr_err("zeroplus: %s: sdi->priv was NULL, continuing", __func__);
 288                         continue;
 289                 }
 290                 sr_usb_dev_inst_free(devc->usb);
 291                 /* Properly close all devices... */
 292                 hw_dev_close(sdi);
 293                 /* ...and free all their memory. */
 294                 sr_dev_inst_free(sdi);
 295         }
 296         g_slist_free(drvc->instances);
 297         drvc->instances = NULL;
 298
 299         return SR_OK;
 300 }
 301
 302 /*
 303  * API callbacks
 304  */
 305
 306 static int hw_init(struct sr_context *sr_ctx)
 307 {
 308         struct drv_context *drvc;
 309
 310         if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
 311                 sr_err("zeroplus: driver context malloc failed.");
 312                 return SR_ERR_MALLOC;
 313         }
 314         zdi->priv = drvc;
 315
 316         if (libusb_init(&usb_context) != 0) {
 317                 sr_err("zp: Failed to initialize USB.");
 318                 return 0;
 319         }
 320
 321         return SR_OK;
 322 }
 323
 324 static GSList *hw_scan(GSList *options)
 325 {
 326         struct sr_dev_inst *sdi;
 327         struct sr_probe *probe;
 328         struct drv_context *drvc;
 329         struct dev_context *devc;
 330         model_t *prof;
 331         struct libusb_device_descriptor des;
 332         libusb_device **devlist;
 333         GSList *devices;
 334         int ret, devcnt, i, j;
 335
 336         (void)options;
 337
 338         drvc = zdi->priv;
 339         devices = NULL;
 340
 341         clear_instances();
 342
 343         /* Find all ZEROPLUS analyzers and add them to device list. */
 344         devcnt = 0;
 345         libusb_get_device_list(usb_context, &devlist); /* TODO: Errors. */
 346
 347         for (i = 0; devlist[i]; i++) {
 348                 ret = libusb_get_device_descriptor(devlist[i], &des);
 349                 if (ret != 0) {
 350                         sr_err("zp: failed to get device descriptor: %d", ret);
 351                         continue;
 352                 }
 353
 354                 prof = NULL;
 355                 for (j = 0; j < zeroplus_models[j].vid; j++) {
 356                         if (des.idVendor == zeroplus_models[j].vid &&
 357                                 des.idProduct == zeroplus_models[j].pid) {
 358                                 prof = &zeroplus_models[j];
 359                         }
 360                 }
 361                 /* Skip if the device was not found */
 362                 if (!prof)
 363                         continue;
 364                 sr_info("zp: Found ZEROPLUS model %s", prof->model_name);
 365
 366                 /* Register the device with libsigrok. */
 367                 if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
 368                                 VENDOR_NAME, prof->model_name, NULL))) {
 369                         sr_err("zp: %s: sr_dev_inst_new failed", __func__);
 370                         return NULL;
 371                 }
 372                 sdi->driver = zdi;
 373
 374                 /* Allocate memory for our private driver context. */
 375                 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
 376                         sr_err("zp: %s: devc malloc failed", __func__);
 377                         return NULL;
 378                 }
 379                 sdi->priv = devc;
 380                 devc->num_channels = prof->channels;
 381 #ifdef ZP_EXPERIMENTAL
 382                 devc->max_memory_size = 128 * 1024;
 383                 devc->max_samplerate = 200;
 384 #else
 385                 devc->max_memory_size = prof->sample_depth * 1024;
 386                 devc->max_samplerate = prof->max_sampling_freq;
 387 #endif
 388                 devc->max_samplerate *= SR_MHZ(1);
 389                 devc->memory_size = MEMORY_SIZE_8K;
 390                 // memset(devc->trigger_buffer, 0, NUM_TRIGGER_STAGES);
 391
 392                 /* Fill in probelist according to this device's profile. */
 393                 for (j = 0; j < devc->num_channels; j++) {
 394                         if (!(probe = sr_probe_new(j, SR_PROBE_LOGIC, TRUE,
 395                                         probe_names[j])))
 396                                 return NULL;
 397                         sdi->probes = g_slist_append(sdi->probes, probe);
 398                 }
 399
 400                 devices = g_slist_append(devices, sdi);
 401                 drvc->instances = g_slist_append(drvc->instances, sdi);
 402                 devc->usb = sr_usb_dev_inst_new(
 403                         libusb_get_bus_number(devlist[i]),
 404                         libusb_get_device_address(devlist[i]), NULL);
 405                 devcnt++;
 406
 407         }
 408         libusb_free_device_list(devlist, 1);
 409
 410         return devices;
 411 }
 412
 413 static GSList *hw_dev_list(void)
 414 {
 415         struct drv_context *drvc;
 416
 417         drvc = zdi->priv;
 418
 419         return drvc->instances;
 420 }
 421
 422 static int hw_dev_open(struct sr_dev_inst *sdi)
 423 {
 424         struct dev_context *devc;
 425         libusb_device **devlist, *dev;
 426         struct libusb_device_descriptor des;
 427         int device_count, ret, i;
 428
 429         if (!(devc = sdi->priv)) {
 430                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 431                 return SR_ERR_ARG;
 432         }
 433
 434         device_count = libusb_get_device_list(usb_context, &devlist);
 435         if (device_count < 0) {
 436                 sr_err("zp: Failed to retrieve device list");
 437                 return SR_ERR;
 438         }
 439
 440         dev = NULL;
 441         for (i = 0; i < device_count; i++) {
 442                 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
 443                         sr_err("fx2lafw: Failed to get device descriptor: %d.",
 444                                ret);
 445                         continue;
 446                 }
 447                 if (libusb_get_bus_number(devlist[i]) == devc->usb->bus
 448                     && libusb_get_device_address(devlist[i]) == devc->usb->address) {
 449                         dev = devlist[i];
 450                         break;
 451                 }
 452         }
 453         if (!dev) {
 454                 sr_err("device on bus %d address %d disappeared!",
 455                                 devc->usb->bus, devc->usb->address);
 456                 return SR_ERR;
 457         }
 458
 459         if (!(ret = libusb_open(dev, &(devc->usb->devhdl)))) {
 460                 sdi->status = SR_ST_ACTIVE;
 461                 sr_info("zp: opened device %d on %d.%d interface %d",
 462                         sdi->index, devc->usb->bus,
 463                         devc->usb->address, USB_INTERFACE);
 464         } else {
 465                 sr_err("zp: failed to open device: %d", ret);
 466                 return SR_ERR;
 467         }
 468
 469         ret = libusb_set_configuration(devc->usb->devhdl, USB_CONFIGURATION);
 470         if (ret < 0) {
 471                 sr_err("zp: Unable to set USB configuration %d: %d",
 472                        USB_CONFIGURATION, ret);
 473                 return SR_ERR;
 474         }
 475
 476         ret = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
 477         if (ret != 0) {
 478                 sr_err("zp: Unable to claim interface: %d", ret);
 479                 return SR_ERR;
 480         }
 481
 482         /* Set default configuration after power on */
 483         if (analyzer_read_status(devc->usb->devhdl) == 0)
 484                 analyzer_configure(devc->usb->devhdl);
 485
 486         analyzer_reset(devc->usb->devhdl);
 487         analyzer_initialize(devc->usb->devhdl);
 488
 489         //analyzer_set_memory_size(MEMORY_SIZE_512K);
 490         // analyzer_set_freq(g_freq, g_freq_scale);
 491         analyzer_set_trigger_count(1);
 492         // analyzer_set_ramsize_trigger_address((((100 - g_pre_trigger)
 493         // * get_memory_size(g_memory_size)) / 100) >> 2);
 494
 495 #if 0
 496         if (g_double_mode == 1)
 497                 analyzer_set_compression(COMPRESSION_DOUBLE);
 498         else if (g_compression == 1)
 499                 analyzer_set_compression(COMPRESSION_ENABLE);
 500         else
 501 #endif
 502         analyzer_set_compression(COMPRESSION_NONE);
 503
 504         if (devc->cur_samplerate == 0) {
 505                 /* Samplerate hasn't been set. Default to 1MHz. */
 506                 analyzer_set_freq(1, FREQ_SCALE_MHZ);
 507                 devc->cur_samplerate = SR_MHZ(1);
 508         }
 509
 510         return SR_OK;
 511 }
 512
 513 static int hw_dev_close(struct sr_dev_inst *sdi)
 514 {
 515         struct dev_context *devc;
 516
 517         if (!(devc = sdi->priv)) {
 518                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 519                 return SR_ERR;
 520         }
 521
 522         if (!devc->usb->devhdl)
 523                 return SR_ERR;
 524
 525         sr_info("zp: closing device %d on %d.%d interface %d", sdi->index,
 526                 devc->usb->bus, devc->usb->address, USB_INTERFACE);
 527         libusb_release_interface(devc->usb->devhdl, USB_INTERFACE);
 528         libusb_reset_device(devc->usb->devhdl);
 529         libusb_close(devc->usb->devhdl);
 530         devc->usb->devhdl = NULL;
 531         sdi->status = SR_ST_INACTIVE;
 532
 533         return SR_OK;
 534 }
 535
 536 static int hw_cleanup(void)
 537 {
 538         struct drv_context *drvc;
 539
 540         if (!(drvc = zdi->priv))
 541                 return SR_OK;
 542
 543         clear_instances();
 544
 545         if (usb_context)
 546                 libusb_exit(usb_context);
 547         usb_context = NULL;
 548
 549         return SR_OK;
 550 }
 551
 552 static int hw_info_get(int info_id, const void **data,
 553        const struct sr_dev_inst *sdi)
 554 {
 555         struct dev_context *devc;
 556
 557         switch (info_id) {
 558         case SR_DI_HWCAPS:
 559                 *data = hwcaps;
 560                 break;
 561         case SR_DI_NUM_PROBES:
 562                 if (sdi) {
 563                         devc = sdi->priv;
 564                         *data = GINT_TO_POINTER(devc->num_channels);
 565                         sr_spew("zp: %s: Returning number of channels: %d.",
 566                                         __func__, devc->num_channels);
 567                 } else
 568                         return SR_ERR;
 569                 break;
 570         case SR_DI_PROBE_NAMES:
 571                 *data = probe_names;
 572                 sr_spew("zp: %s: Returning probenames.", __func__);
 573                 break;
 574         case SR_DI_SAMPLERATES:
 575                 *data = &samplerates;
 576                 sr_spew("zp: %s: Returning samplerates.", __func__);
 577                 break;
 578         case SR_DI_TRIGGER_TYPES:
 579                 *data = TRIGGER_TYPES;
 580                 sr_spew("zp: %s: Returning triggertypes: %s.", __func__, TRIGGER_TYPES);
 581                 break;
 582         case SR_DI_CUR_SAMPLERATE:
 583                 if (sdi) {
 584                         devc = sdi->priv;
 585                         *data = &devc->cur_samplerate;
 586                         sr_spew("zp: %s: Returning samplerate: %" PRIu64 "Hz.",
 587                                 __func__, devc->cur_samplerate);
 588                 } else
 589                         return SR_ERR;
 590                 break;
 591         default:
 592                 return SR_ERR_ARG;
 593         }
 594
 595         return SR_OK;
 596 }
 597
 598 static int set_samplerate(struct dev_context *devc, uint64_t samplerate)
 599 {
 600         int i;
 601
 602         for (i = 0; supported_samplerates[i]; i++)
 603                 if (samplerate == supported_samplerates[i])
 604                         break;
 605         if (!supported_samplerates[i] || samplerate > devc->max_samplerate) {
 606                 sr_err("zp: %s: unsupported samplerate", __func__);
 607                 return SR_ERR_ARG;
 608         }
 609
 610         sr_info("zp: Setting samplerate to %" PRIu64 "Hz.", samplerate);
 611
 612         if (samplerate >= SR_MHZ(1))
 613                 analyzer_set_freq(samplerate / SR_MHZ(1), FREQ_SCALE_MHZ);
 614         else if (samplerate >= SR_KHZ(1))
 615                 analyzer_set_freq(samplerate / SR_KHZ(1), FREQ_SCALE_KHZ);
 616         else
 617                 analyzer_set_freq(samplerate, FREQ_SCALE_HZ);
 618
 619         devc->cur_samplerate = samplerate;
 620
 621         return SR_OK;
 622 }
 623
 624 static int set_limit_samples(struct dev_context *devc, uint64_t samples)
 625 {
 626         devc->limit_samples = samples;
 627
 628         if (samples <= 2 * 1024)
 629                 devc->memory_size = MEMORY_SIZE_8K;
 630         else if (samples <= 16 * 1024)
 631                 devc->memory_size = MEMORY_SIZE_64K;
 632         else if (samples <= 32 * 1024 ||
 633                  devc->max_memory_size <= 32 * 1024)
 634                 devc->memory_size = MEMORY_SIZE_128K;
 635         else
 636                 devc->memory_size = MEMORY_SIZE_512K;
 637
 638         sr_info("zp: Setting memory size to %dK.",
 639                 get_memory_size(devc->memory_size) / 1024);
 640
 641         analyzer_set_memory_size(devc->memory_size);
 642
 643         return SR_OK;
 644 }
 645
 646 static int set_capture_ratio(struct dev_context *devc, uint64_t ratio)
 647 {
 648         if (ratio > 100) {
 649                 sr_err("zp: %s: invalid capture ratio", __func__);
 650                 return SR_ERR_ARG;
 651         }
 652
 653         devc->capture_ratio = ratio;
 654
 655         sr_info("zp: Setting capture ratio to %d%%.", devc->capture_ratio);
 656
 657         return SR_OK;
 658 }
 659
 660 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
 661                              const void *value)
 662 {
 663         struct dev_context *devc;
 664
 665         if (!sdi) {
 666                 sr_err("zp: %s: sdi was NULL", __func__);
 667                 return SR_ERR_ARG;
 668         }
 669
 670         if (!(devc = sdi->priv)) {
 671                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 672                 return SR_ERR_ARG;
 673         }
 674
 675         switch (hwcap) {
 676         case SR_HWCAP_SAMPLERATE:
 677                 return set_samplerate(devc, *(const uint64_t *)value);
 678         case SR_HWCAP_LIMIT_SAMPLES:
 679                 return set_limit_samples(devc, *(const uint64_t *)value);
 680         case SR_HWCAP_CAPTURE_RATIO:
 681                 return set_capture_ratio(devc, *(const uint64_t *)value);
 682         default:
 683                 return SR_ERR;
 684         }
 685 }
 686
 687 static void set_triggerbar(struct dev_context *devc)
 688 {
 689         unsigned int ramsize;
 690         unsigned int n;
 691         unsigned int triggerbar;
 692
 693         ramsize = get_memory_size(devc->memory_size) / 4;
 694         if (devc->trigger) {
 695                 n = ramsize;
 696                 if (devc->max_memory_size < n)
 697                         n = devc->max_memory_size;
 698                 if (devc->limit_samples < n)
 699                         n = devc->limit_samples;
 700                 n = n * devc->capture_ratio / 100;
 701                 if (n > ramsize - 8)
 702                         triggerbar = ramsize - 8;
 703                 else
 704                         triggerbar = n;
 705         } else {
 706                 triggerbar = 0;
 707         }
 708         analyzer_set_triggerbar_address(triggerbar);
 709         analyzer_set_ramsize_trigger_address(ramsize - triggerbar);
 710
 711         sr_dbg("zp: triggerbar_address = %d(0x%x)", triggerbar, triggerbar);
 712         sr_dbg("zp: ramsize_triggerbar_address = %d(0x%x)",
 713                ramsize - triggerbar, ramsize - triggerbar);
 714 }
 715
 716 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 717                 void *cb_data)
 718 {
 719         struct sr_datafeed_packet packet;
 720         struct sr_datafeed_logic logic;
 721         struct sr_datafeed_header header;
 722         struct sr_datafeed_meta_logic meta;
 723         //uint64_t samples_read;
 724         int res;
 725         unsigned int packet_num;
 726         unsigned int n;
 727         unsigned char *buf;
 728         struct dev_context *devc;
 729
 730         if (!(devc = sdi->priv)) {
 731                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 732                 return SR_ERR_ARG;
 733         }
 734
 735         if (configure_probes(sdi) != SR_OK) {
 736                 sr_err("zp: failed to configured probes");
 737                 return SR_ERR;
 738         }
 739
 740         set_triggerbar(devc);
 741
 742         /* push configured settings to device */
 743         analyzer_configure(devc->usb->devhdl);
 744
 745         analyzer_start(devc->usb->devhdl);
 746         sr_info("zp: Waiting for data");
 747         analyzer_wait_data(devc->usb->devhdl);
 748
 749         sr_info("zp: Stop address    = 0x%x",
 750                 analyzer_get_stop_address(devc->usb->devhdl));
 751         sr_info("zp: Now address     = 0x%x",
 752                 analyzer_get_now_address(devc->usb->devhdl));
 753         sr_info("zp: Trigger address = 0x%x",
 754                 analyzer_get_trigger_address(devc->usb->devhdl));
 755
 756         packet.type = SR_DF_HEADER;
 757         packet.payload = &header;
 758         header.feed_version = 1;
 759         gettimeofday(&header.starttime, NULL);
 760         sr_session_send(cb_data, &packet);
 761
 762         /* Send metadata about the SR_DF_LOGIC packets to come. */
 763         packet.type = SR_DF_META_LOGIC;
 764         packet.payload = &meta;
 765         meta.samplerate = devc->cur_samplerate;
 766         meta.num_probes = devc->num_channels;
 767         sr_session_send(cb_data, &packet);
 768
 769         if (!(buf = g_try_malloc(PACKET_SIZE))) {
 770                 sr_err("zp: %s: buf malloc failed", __func__);
 771                 return SR_ERR_MALLOC;
 772         }
 773
 774         //samples_read = 0;
 775         analyzer_read_start(devc->usb->devhdl);
 776         /* Send the incoming transfer to the session bus. */
 777         n = get_memory_size(devc->memory_size);
 778         if (devc->max_memory_size * 4 < n)
 779                 n = devc->max_memory_size * 4;
 780         for (packet_num = 0; packet_num < n / PACKET_SIZE; packet_num++) {
 781                 res = analyzer_read_data(devc->usb->devhdl, buf, PACKET_SIZE);
 782                 sr_info("zp: Tried to read %d bytes, actually read %d bytes",
 783                         PACKET_SIZE, res);
 784
 785                 packet.type = SR_DF_LOGIC;
 786                 packet.payload = &logic;
 787                 logic.length = PACKET_SIZE;
 788                 logic.unitsize = 4;
 789                 logic.data = buf;
 790                 sr_session_send(cb_data, &packet);
 791                 //samples_read += res / 4;
 792         }
 793         analyzer_read_stop(devc->usb->devhdl);
 794         g_free(buf);
 795
 796         packet.type = SR_DF_END;
 797         sr_session_send(cb_data, &packet);
 798
 799         return SR_OK;
 800 }
 801
 802 /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
 803 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
 804 {
 805         struct sr_datafeed_packet packet;
 806         struct dev_context *devc;
 807
 808         packet.type = SR_DF_END;
 809         sr_session_send(cb_data, &packet);
 810
 811         if (!(devc = sdi->priv)) {
 812                 sr_err("zp: %s: sdi->priv was NULL", __func__);
 813                 return SR_ERR_BUG;
 814         }
 815
 816         analyzer_reset(devc->usb->devhdl);
 817         /* TODO: Need to cancel and free any queued up transfers. */
 818
 819         return SR_OK;
 820 }
 821
 822 SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info = {
 823         .name = "zeroplus-logic-cube",
 824         .longname = "ZEROPLUS Logic Cube LAP-C series",
 825         .api_version = 1,
 826         .init = hw_init,
 827         .cleanup = hw_cleanup,
 828         .scan = hw_scan,
 829         .dev_list = hw_dev_list,
 830         .dev_clear = hw_cleanup,
 831         .dev_open = hw_dev_open,
 832         .dev_close = hw_dev_close,
 833         .info_get = hw_info_get,
 834         .dev_config_set = hw_dev_config_set,
 835         .dev_acquisition_start = hw_dev_acquisition_start,
 836         .dev_acquisition_stop = hw_dev_acquisition_stop,
 837         .priv = NULL,
 838 };