hwdriver.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 <stdlib.h>
  21 #include <stdio.h>
  22 #include <sys/types.h>
  23 #include <dirent.h>
  24 #include <string.h>
  25 #include <glib.h>
  26 #include "libsigrok.h"
  27 #include "libsigrok-internal.h"
  28
  29 /*
  30  * This enumerates which driver capabilities correspond to user-settable
  31  * options.
  32  */
  33 /* TODO: This shouldn't be a global. */
  34 SR_API struct sr_hwcap_option sr_hwcap_options[] = {
  35         {SR_HWCAP_SAMPLERATE, SR_T_UINT64, "Sample rate", "samplerate"},
  36         {SR_HWCAP_CAPTURE_RATIO, SR_T_UINT64, "Pre-trigger capture ratio", "captureratio"},
  37         {SR_HWCAP_PATTERN_MODE, SR_T_CHAR, "Pattern generator mode", "pattern"},
  38         {SR_HWCAP_RLE, SR_T_BOOL, "Run Length Encoding", "rle"},
  39         {SR_HWCAP_TRIGGER_SLOPE, SR_T_UINT64, "Trigger slope", "triggerslope"},
  40         {SR_HWCAP_TRIGGER_SOURCE, SR_T_CHAR, "Trigger source", "triggersource"},
  41         {SR_HWCAP_HORIZ_TRIGGERPOS, SR_T_FLOAT, "Horizontal trigger position",
  42                         "horiz_triggerpos"},
  43         {SR_HWCAP_BUFFERSIZE, SR_T_UINT64, "Buffer size", "buffersize"},
  44         {SR_HWCAP_TIMEBASE, SR_T_RATIONAL_PERIOD, "Time base", "timebase"},
  45         {SR_HWCAP_FILTER, SR_T_CHAR, "Filter targets", "filter"},
  46         {SR_HWCAP_VDIV, SR_T_RATIONAL_VOLT, "Volts/div", "vdiv"},
  47         {SR_HWCAP_COUPLING, SR_T_CHAR, "Coupling", "coupling"},
  48         {SR_HWCAP_MODEL, SR_T_KEYVALUE, "Model", "model"},
  49         {SR_HWCAP_CONN, SR_T_CHAR, "Connection", "connect"},
  50         {SR_HWCAP_SERIALCOMM, SR_T_CHAR, "Serial communication", "serialcomm"},
  51         {0, 0, NULL, NULL},
  52 };
  53
  54 #ifdef HAVE_LA_DEMO
  55 extern SR_PRIV struct sr_dev_driver demo_driver_info;
  56 #endif
  57 #ifdef HAVE_LA_OLS
  58 extern SR_PRIV struct sr_dev_driver ols_driver_info;
  59 #endif
  60 #ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
  61 extern SR_PRIV struct sr_dev_driver zeroplus_logic_cube_driver_info;
  62 #endif
  63 #ifdef HAVE_LA_ASIX_SIGMA
  64 extern SR_PRIV struct sr_dev_driver asix_sigma_driver_info;
  65 #endif
  66 #ifdef HAVE_LA_CHRONOVU_LA8
  67 extern SR_PRIV struct sr_dev_driver chronovu_la8_driver_info;
  68 #endif
  69 #ifdef HAVE_LA_LINK_MSO19
  70 extern SR_PRIV struct sr_dev_driver link_mso19_driver_info;
  71 #endif
  72 #ifdef HAVE_LA_ALSA
  73 extern SR_PRIV struct sr_dev_driver alsa_driver_info;
  74 #endif
  75 #ifdef HAVE_LA_FX2LAFW
  76 extern SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
  77 #endif
  78 #ifdef HAVE_HW_HANTEK_DSO
  79 extern SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
  80 #endif
  81 #ifdef HAVE_HW_GENERICDMM
  82 extern SR_PRIV struct sr_dev_driver genericdmm_driver_info;
  83 #endif
  84
  85 static struct sr_dev_driver *drivers_list[] = {
  86 #ifdef HAVE_LA_DEMO
  87         &demo_driver_info,
  88 #endif
  89 #ifdef HAVE_LA_OLS
  90         &ols_driver_info,
  91 #endif
  92 #ifdef HAVE_LA_ZEROPLUS_LOGIC_CUBE
  93         &zeroplus_logic_cube_driver_info,
  94 #endif
  95 #ifdef HAVE_LA_ASIX_SIGMA
  96         &asix_sigma_driver_info,
  97 #endif
  98 #ifdef HAVE_LA_CHRONOVU_LA8
  99         &chronovu_la8_driver_info,
 100 #endif
 101 #ifdef HAVE_LA_LINK_MSO19
 102         &link_mso19_driver_info,
 103 #endif
 104 #ifdef HAVE_LA_ALSA
 105         &alsa_driver_info,
 106 #endif
 107 #ifdef HAVE_LA_FX2LAFW
 108         &fx2lafw_driver_info,
 109 #endif
 110 #ifdef HAVE_HW_HANTEK_DSO
 111         &hantek_dso_driver_info,
 112 #endif
 113 #ifdef HAVE_HW_GENERICDMM
 114         &genericdmm_driver_info,
 115 #endif
 116         NULL,
 117 };
 118
 119 /**
 120  * Return the list of supported hardware drivers.
 121  *
 122  * @return Pointer to the NULL-terminated list of hardware driver pointers.
 123  */
 124 SR_API struct sr_dev_driver **sr_driver_list(void)
 125 {
 126         return drivers_list;
 127 }
 128
 129 /**
 130  * Initialize a hardware driver.
 131  *
 132  * The specified driver is initialized, and all devices discovered by the
 133  * driver are instantiated.
 134  *
 135  * @param driver The driver to initialize.
 136  *
 137  * @return The number of devices found and instantiated by the driver.
 138  */
 139 SR_API int sr_driver_init(struct sr_dev_driver *driver)
 140 {
 141         int num_devs, num_probes, i, j;
 142         int num_initialized_devs = 0;
 143         struct sr_dev *dev;
 144         char **probe_names;
 145
 146         sr_dbg("initializing %s driver", driver->name);
 147         num_devs = driver->init(NULL);
 148         for (i = 0; i < num_devs; i++) {
 149                 num_probes = GPOINTER_TO_INT(
 150                                 driver->dev_info_get(i, SR_DI_NUM_PROBES));
 151                 probe_names = (char **)driver->dev_info_get(i,
 152                                                         SR_DI_PROBE_NAMES);
 153
 154                 if (!probe_names) {
 155                         sr_warn("hwdriver: %s: driver %s does not return a "
 156                                 "list of probe names", __func__, driver->name);
 157                         continue;
 158                 }
 159
 160                 dev = sr_dev_new(driver, i);
 161                 for (j = 0; j < num_probes; j++)
 162                         sr_dev_probe_add(dev, probe_names[j]);
 163                 num_initialized_devs++;
 164         }
 165
 166         return num_initialized_devs;
 167 }
 168
 169 SR_PRIV void sr_hw_cleanup_all(void)
 170 {
 171         int i;
 172         struct sr_dev_driver **drivers;
 173
 174         drivers = sr_driver_list();
 175         for (i = 0; drivers[i]; i++) {
 176                 if (drivers[i]->cleanup)
 177                         drivers[i]->cleanup();
 178         }
 179 }
 180
 181 SR_PRIV struct sr_dev_inst *sr_dev_inst_new(int index, int status,
 182                 const char *vendor, const char *model, const char *version)
 183 {
 184         struct sr_dev_inst *sdi;
 185
 186         if (!(sdi = g_try_malloc(sizeof(struct sr_dev_inst)))) {
 187                 sr_err("hwdriver: %s: sdi malloc failed", __func__);
 188                 return NULL;
 189         }
 190
 191         sdi->index = index;
 192         sdi->status = status;
 193         sdi->inst_type = -1;
 194         sdi->vendor = vendor ? g_strdup(vendor) : NULL;
 195         sdi->model = model ? g_strdup(model) : NULL;
 196         sdi->version = version ? g_strdup(version) : NULL;
 197         sdi->priv = NULL;
 198
 199         return sdi;
 200 }
 201
 202 SR_PRIV struct sr_dev_inst *sr_dev_inst_get(GSList *dev_insts, int dev_index)
 203 {
 204         struct sr_dev_inst *sdi;
 205         GSList *l;
 206
 207         for (l = dev_insts; l; l = l->next) {
 208                 sdi = (struct sr_dev_inst *)(l->data);
 209                 if (sdi->index == dev_index)
 210                         return sdi;
 211         }
 212         sr_warn("could not find device index %d instance", dev_index);
 213
 214         return NULL;
 215 }
 216
 217 SR_PRIV void sr_dev_inst_free(struct sr_dev_inst *sdi)
 218 {
 219         g_free(sdi->priv);
 220         g_free(sdi->vendor);
 221         g_free(sdi->model);
 222         g_free(sdi->version);
 223         g_free(sdi);
 224 }
 225
 226 #ifdef HAVE_LIBUSB_1_0
 227
 228 SR_PRIV struct sr_usb_dev_inst *sr_usb_dev_inst_new(uint8_t bus,
 229                         uint8_t address, struct libusb_device_handle *hdl)
 230 {
 231         struct sr_usb_dev_inst *udi;
 232
 233         if (!(udi = g_try_malloc(sizeof(struct sr_usb_dev_inst)))) {
 234                 sr_err("hwdriver: %s: udi malloc failed", __func__);
 235                 return NULL;
 236         }
 237
 238         udi->bus = bus;
 239         udi->address = address;
 240         udi->devhdl = hdl;
 241
 242         return udi;
 243 }
 244
 245 SR_PRIV void sr_usb_dev_inst_free(struct sr_usb_dev_inst *usb)
 246 {
 247         /* Avoid compiler warnings. */
 248         (void)usb;
 249
 250         /* Nothing to do for this device instance type. */
 251 }
 252
 253 #endif
 254
 255 SR_PRIV struct sr_serial_dev_inst *sr_serial_dev_inst_new(const char *port,
 256                                                           int fd)
 257 {
 258         struct sr_serial_dev_inst *serial;
 259
 260         if (!(serial = g_try_malloc(sizeof(struct sr_serial_dev_inst)))) {
 261                 sr_err("hwdriver: %s: serial malloc failed", __func__);
 262                 return NULL;
 263         }
 264
 265         serial->port = g_strdup(port);
 266         serial->fd = fd;
 267
 268         return serial;
 269 }
 270
 271 SR_PRIV void sr_serial_dev_inst_free(struct sr_serial_dev_inst *serial)
 272 {
 273         g_free(serial->port);
 274 }
 275
 276 /**
 277  * Find out if a hardware driver has a specific capability.
 278  *
 279  * @param driver The hardware driver in which to search for the capability.
 280  * @param hwcap The capability to find in the list.
 281  *
 282  * @return TRUE if the specified capability exists in the specified driver,
 283  *         FALSE otherwise. Also, if 'driver' is NULL or the respective driver
 284  *         returns an invalid capability list, FALSE is returned.
 285  */
 286 SR_API gboolean sr_driver_hwcap_exists(struct sr_dev_driver *driver, int hwcap)
 287 {
 288         const int *hwcaps;
 289         int i;
 290
 291         if (!driver) {
 292                 sr_err("hwdriver: %s: driver was NULL", __func__);
 293                 return FALSE;
 294         }
 295
 296         if (!(hwcaps = driver->hwcap_get_all())) {
 297                 sr_err("hwdriver: %s: hwcap_get_all() returned NULL", __func__);
 298                 return FALSE;
 299         }
 300
 301         for (i = 0; hwcaps[i]; i++) {
 302                 if (hwcaps[i] == hwcap)
 303                         return TRUE;
 304         }
 305
 306         return FALSE;
 307 }
 308
 309 /**
 310  * Get a hardware driver capability option.
 311  *
 312  * @param hwcap The capability to get.
 313  *
 314  * @return A pointer to a struct with information about the parameter, or NULL
 315  *         if the capability was not found.
 316  */
 317 SR_API const struct sr_hwcap_option *sr_hw_hwcap_get(int hwcap)
 318 {
 319         int i;
 320
 321         for (i = 0; sr_hwcap_options[i].hwcap; i++) {
 322                 if (sr_hwcap_options[i].hwcap == hwcap)
 323                         return &sr_hwcap_options[i];
 324         }
 325
 326         return NULL;
 327 }
 328
 329 /* Unnecessary level of indirection follows. */
 330
 331 SR_PRIV int sr_source_remove(int fd)
 332 {
 333         return sr_session_source_remove(fd);
 334 }
 335
 336 SR_PRIV int sr_source_add(int fd, int events, int timeout,
 337                           sr_receive_data_callback_t cb, void *cb_data)
 338 {
 339         return sr_session_source_add(fd, events, timeout, cb, cb_data);
 340 }