drivers/comedi/drivers/tests/ni_routes_test.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  *  comedi/drivers/tests/ni_routes_test.c
   4  *  Unit tests for NI routes (ni_routes.c module).
   5  *
   6  *  COMEDI - Linux Control and Measurement Device Interface
   7  *  Copyright (C) 2016 Spencer E. Olson <olsonse@umich.edu>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  */
  19
  20 #include <linux/module.h>
  21
  22 #include "../ni_stc.h"
  23 #include "../ni_routes.h"
  24 #include "unittest.h"
  25
  26 #define RVI(table, src, dest)   ((table)[(dest) * NI_NUM_NAMES + (src)])
  27 #define O(x)    ((x) + NI_NAMES_BASE)
  28 #define B(x)    ((x) - NI_NAMES_BASE)
  29 #define V(x)    ((x) | 0x80)
  30
  31 /* *** BEGIN fake board data *** */
  32 static const char *pci_6070e = "pci-6070e";
  33 static const char *pci_6220 = "pci-6220";
  34 static const char *pci_fake = "pci-fake";
  35
  36 static const char *ni_eseries = "ni_eseries";
  37 static const char *ni_mseries = "ni_mseries";
  38
  39 static struct ni_board_struct board = {
  40         .name = NULL,
  41 };
  42
  43 static struct ni_private private = {
  44         .is_m_series = 0,
  45 };
  46
  47 static const int bad_dest = O(8), dest0 = O(0), desti = O(5);
  48 static const int ith_dest_index = 2;
  49 static const int no_val_dest = O(7), no_val_index = 4;
  50
  51 /* These have to be defs to be used in init code below */
  52 #define rgout0_src0     (O(100))
  53 #define rgout0_src1     (O(101))
  54 #define brd0_src0       (O(110))
  55 #define brd0_src1       (O(111))
  56 #define brd1_src0       (O(120))
  57 #define brd1_src1       (O(121))
  58 #define brd2_src0       (O(130))
  59 #define brd2_src1       (O(131))
  60 #define brd3_src0       (O(140))
  61 #define brd3_src1       (O(141))
  62
  63 /* I1 and I2 should not call O(...).  Mostly here to shut checkpatch.pl up */
  64 #define I1(x1)  \
  65         ((int[]){ \
  66                 (x1), 0 \
  67          })
  68 #define I2(x1, x2)      \
  69         ((int[]){ \
  70                 (x1), (x2), 0 \
  71          })
  72 #define I3(x1, x2, x3)  \
  73         ((int[]){ \
  74                 (x1), (x2), (x3), 0 \
  75          })
  76
  77 /* O9 is build to call O(...) for each arg */
  78 #define O9(x1, x2, x3, x4, x5, x6, x7, x8, x9)  \
  79         ((int[]){ \
  80                 O(x1), O(x2), O(x3), O(x4), O(x5), O(x6), O(x7), O(x8), O(x9), \
  81                 0 \
  82          })
  83
  84 static struct ni_device_routes DR = {
  85         .device = "testdev",
  86         .routes = (struct ni_route_set[]){
  87                 {.dest = O(0), .src = O9(/**/1, 2, 3, 4, 5, 6, 7, 8, 9)},
  88                 {.dest = O(1), .src = O9(0, /**/2, 3, 4, 5, 6, 7, 8, 9)},
  89                 /* ith route_set */
  90                 {.dest = O(5), .src = O9(0, 1, 2, 3, 4,/**/ 6, 7, 8, 9)},
  91                 {.dest = O(6), .src = O9(0, 1, 2, 3, 4, 5,/**/ 7, 8, 9)},
  92                 /* next one will not have valid reg values */
  93                 {.dest = O(7), .src = O9(0, 1, 2, 3, 4, 5, 6,/**/ 8, 9)},
  94                 {.dest = O(9), .src = O9(0, 1, 2, 3, 4, 5, 6, 7, 8/**/)},
  95
  96                 /* indirect routes done through muxes */
  97                 {.dest = TRIGGER_LINE(0), .src = I1(rgout0_src0)},
  98                 {.dest = TRIGGER_LINE(1), .src = I3(rgout0_src0,
  99                                                     brd3_src0,
 100                                                     brd3_src1)},
 101                 {.dest = TRIGGER_LINE(2), .src = I3(rgout0_src1,
 102                                                     brd2_src0,
 103                                                     brd2_src1)},
 104                 {.dest = TRIGGER_LINE(3), .src = I3(rgout0_src1,
 105                                                     brd1_src0,
 106                                                     brd1_src1)},
 107                 {.dest = TRIGGER_LINE(4), .src = I2(brd0_src0,
 108                                                     brd0_src1)},
 109                 {.dest = 0},
 110         },
 111 };
 112
 113 #undef I1
 114 #undef I2
 115 #undef O9
 116
 117 #define RV9(x1, x2, x3, x4, x5, x6, x7, x8, x9) \
 118         [x1] = V(x1), [x2] = V(x2), [x3] = V(x3), [x4] = V(x4), \
 119         [x5] = V(x5), [x6] = V(x6), [x7] = V(x7), [x8] = V(x8), \
 120         [x9] = V(x9),
 121
 122 /* This table is indexed as RV[destination][source] */
 123 static const u8 RV[NI_NUM_NAMES][NI_NUM_NAMES] = {
 124         [0] = {RV9(/**/1, 2, 3, 4, 5, 6, 7, 8, 9)},
 125         [1] = {RV9(0,/**/ 2, 3, 4, 5, 6, 7, 8, 9)},
 126         [2] = {RV9(0,  1,/**/3, 4, 5, 6, 7, 8, 9)},
 127         [3] = {RV9(0,  1, 2,/**/4, 5, 6, 7, 8, 9)},
 128         [4] = {RV9(0,  1, 2, 3,/**/5, 6, 7, 8, 9)},
 129         [5] = {RV9(0,  1, 2, 3, 4,/**/6, 7, 8, 9)},
 130         [6] = {RV9(0,  1, 2, 3, 4, 5,/**/7, 8, 9)},
 131         /* [7] is intentionaly left absent to test invalid routes */
 132         [8] = {RV9(0,  1, 2, 3, 4, 5, 6, 7,/**/9)},
 133         [9] = {RV9(0,  1, 2, 3, 4, 5, 6, 7, 8/**/)},
 134         /* some tests for needing extra muxes */
 135         [B(NI_RGOUT0)]  = {[B(rgout0_src0)]   = V(0),
 136                            [B(rgout0_src1)]   = V(1)},
 137         [B(NI_RTSI_BRD(0))] = {[B(brd0_src0)] = V(0),
 138                                [B(brd0_src1)] = V(1)},
 139         [B(NI_RTSI_BRD(1))] = {[B(brd1_src0)] = V(0),
 140                                [B(brd1_src1)] = V(1)},
 141         [B(NI_RTSI_BRD(2))] = {[B(brd2_src0)] = V(0),
 142                                [B(brd2_src1)] = V(1)},
 143         [B(NI_RTSI_BRD(3))] = {[B(brd3_src0)] = V(0),
 144                                [B(brd3_src1)] = V(1)},
 145 };
 146
 147 #undef RV9
 148
 149 /* *** END fake board data *** */
 150
 151 /* *** BEGIN board data initializers *** */
 152 static void init_private(void)
 153 {
 154         memset(&private, 0, sizeof(struct ni_private));
 155 }
 156
 157 static void init_pci_6070e(void)
 158 {
 159         board.name = pci_6070e;
 160         init_private();
 161         private.is_m_series = 0;
 162 }
 163
 164 static void init_pci_6220(void)
 165 {
 166         board.name = pci_6220;
 167         init_private();
 168         private.is_m_series = 1;
 169 }
 170
 171 static void init_pci_fake(void)
 172 {
 173         board.name = pci_fake;
 174         init_private();
 175         private.routing_tables.route_values = &RV[0][0];
 176         private.routing_tables.valid_routes = &DR;
 177 }
 178
 179 /* *** END board data initializers *** */
 180
 181 /* Tests that route_sets are in order of the signal destination. */
 182 static bool route_set_dests_in_order(const struct ni_device_routes *devroutes)
 183 {
 184         int i;
 185         int last = NI_NAMES_BASE - 1;
 186
 187         for (i = 0; i < devroutes->n_route_sets; ++i) {
 188                 if (last >= devroutes->routes[i].dest)
 189                         return false;
 190                 last = devroutes->routes[i].dest;
 191         }
 192         return true;
 193 }
 194
 195 /* Tests that all route_set->src are in order of the signal source. */
 196 static bool route_set_sources_in_order(const struct ni_device_routes *devroutes)
 197 {
 198         int i;
 199
 200         for (i = 0; i < devroutes->n_route_sets; ++i) {
 201                 int j;
 202                 int last = NI_NAMES_BASE - 1;
 203
 204                 for (j = 0; j < devroutes->routes[i].n_src; ++j) {
 205                         if (last >= devroutes->routes[i].src[j])
 206                                 return false;
 207                         last = devroutes->routes[i].src[j];
 208                 }
 209         }
 210         return true;
 211 }
 212
 213 static void test_ni_assign_device_routes(void)
 214 {
 215         const struct ni_device_routes *devroutes;
 216         const u8 *table, *oldtable;
 217
 218         init_pci_6070e();
 219         ni_assign_device_routes(ni_eseries, pci_6070e, NULL,
 220                                 &private.routing_tables);
 221         devroutes = private.routing_tables.valid_routes;
 222         table = private.routing_tables.route_values;
 223
 224         unittest(strncmp(devroutes->device, pci_6070e, 10) == 0,
 225                  "find device pci-6070e\n");
 226         unittest(devroutes->n_route_sets == 37,
 227                  "number of pci-6070e route_sets == 37\n");
 228         unittest(devroutes->routes->dest == NI_PFI(0),
 229                  "first pci-6070e route_set is for NI_PFI(0)\n");
 230         unittest(devroutes->routes->n_src == 1,
 231                  "first pci-6070e route_set length == 1\n");
 232         unittest(devroutes->routes->src[0] == NI_AI_StartTrigger,
 233                  "first pci-6070e route_set src. == NI_AI_StartTrigger\n");
 234         unittest(devroutes->routes[10].dest == TRIGGER_LINE(0),
 235                  "10th pci-6070e route_set is for TRIGGER_LINE(0)\n");
 236         unittest(devroutes->routes[10].n_src == 10,
 237                  "10th pci-6070e route_set length == 10\n");
 238         unittest(devroutes->routes[10].src[0] == NI_CtrSource(0),
 239                  "10th pci-6070e route_set src. == NI_CtrSource(0)\n");
 240         unittest(route_set_dests_in_order(devroutes),
 241                  "all pci-6070e route_sets in order of signal destination\n");
 242         unittest(route_set_sources_in_order(devroutes),
 243                  "all pci-6070e route_set->src's in order of signal source\n");
 244
 245         unittest(RVI(table, B(PXI_Star), B(NI_AI_SampleClock)) == V(17) &&
 246                  RVI(table, B(NI_10MHzRefClock), B(TRIGGER_LINE(0))) == 0 &&
 247                  RVI(table, B(NI_AI_ConvertClock), B(NI_PFI(0))) == 0 &&
 248                  RVI(table, B(NI_AI_ConvertClock), B(NI_PFI(2))) == V(NI_PFI_OUTPUT_AI_CONVERT),
 249                  "pci-6070e finds e-series route_values table\n");
 250
 251         oldtable = table;
 252         init_pci_6220();
 253         ni_assign_device_routes(ni_mseries, pci_6220, NULL,
 254                                 &private.routing_tables);
 255         devroutes = private.routing_tables.valid_routes;
 256         table = private.routing_tables.route_values;
 257
 258         unittest(strncmp(devroutes->device, pci_6220, 10) == 0,
 259                  "find device pci-6220\n");
 260         unittest(oldtable != table, "pci-6220 find other route_values table\n");
 261
 262         unittest(RVI(table, B(PXI_Star), B(NI_AI_SampleClock)) == V(20) &&
 263                  RVI(table, B(NI_10MHzRefClock), B(TRIGGER_LINE(0))) == V(12) &&
 264                  RVI(table, B(NI_AI_ConvertClock), B(NI_PFI(0))) == V(3) &&
 265                  RVI(table, B(NI_AI_ConvertClock), B(NI_PFI(2))) == V(3),
 266                  "pci-6220 finds m-series route_values table\n");
 267 }
 268
 269 static void test_ni_sort_device_routes(void)
 270 {
 271         /* We begin by sorting the device routes for use in later tests */
 272         ni_sort_device_routes(&DR);
 273         /* now we test that sorting. */
 274         unittest(route_set_dests_in_order(&DR),
 275                  "all route_sets of fake data in order of sig. destination\n");
 276         unittest(route_set_sources_in_order(&DR),
 277                  "all route_set->src's of fake data in order of sig. source\n");
 278 }
 279
 280 static void test_ni_find_route_set(void)
 281 {
 282         unittest(!ni_find_route_set(bad_dest, &DR),
 283                  "check for nonexistent route_set\n");
 284         unittest(ni_find_route_set(dest0, &DR) == &DR.routes[0],
 285                  "find first route_set\n");
 286         unittest(ni_find_route_set(desti, &DR) == &DR.routes[ith_dest_index],
 287                  "find ith route_set\n");
 288         unittest(ni_find_route_set(no_val_dest, &DR) ==
 289                  &DR.routes[no_val_index],
 290                  "find no_val route_set in spite of missing values\n");
 291         unittest(ni_find_route_set(DR.routes[DR.n_route_sets - 1].dest, &DR) ==
 292                  &DR.routes[DR.n_route_sets - 1],
 293                  "find last route_set\n");
 294 }
 295
 296 static void test_ni_route_set_has_source(void)
 297 {
 298         unittest(!ni_route_set_has_source(&DR.routes[0], O(0)),
 299                  "check for bad source\n");
 300         unittest(ni_route_set_has_source(&DR.routes[0], O(1)),
 301                  "find first source\n");
 302         unittest(ni_route_set_has_source(&DR.routes[0], O(5)),
 303                  "find fifth source\n");
 304         unittest(ni_route_set_has_source(&DR.routes[0], O(9)),
 305                  "find last source\n");
 306 }
 307
 308 static void test_ni_route_to_register(void)
 309 {
 310         const struct ni_route_tables *T = &private.routing_tables;
 311
 312         init_pci_fake();
 313         unittest(ni_route_to_register(O(0), O(0), T) < 0,
 314                  "check for bad route 0-->0\n");
 315         unittest(ni_route_to_register(O(1), O(0), T) == 1,
 316                  "validate first destination\n");
 317         unittest(ni_route_to_register(O(6), O(5), T) == 6,
 318                  "validate middle destination\n");
 319         unittest(ni_route_to_register(O(8), O(9), T) == 8,
 320                  "validate last destination\n");
 321
 322         /* choice of trigger line in the following is somewhat random */
 323         unittest(ni_route_to_register(rgout0_src0, TRIGGER_LINE(0), T) == 0,
 324                  "validate indirect route through rgout0 to TRIGGER_LINE(0)\n");
 325         unittest(ni_route_to_register(rgout0_src0, TRIGGER_LINE(1), T) == 0,
 326                  "validate indirect route through rgout0 to TRIGGER_LINE(1)\n");
 327         unittest(ni_route_to_register(rgout0_src1, TRIGGER_LINE(2), T) == 1,
 328                  "validate indirect route through rgout0 to TRIGGER_LINE(2)\n");
 329         unittest(ni_route_to_register(rgout0_src1, TRIGGER_LINE(3), T) == 1,
 330                  "validate indirect route through rgout0 to TRIGGER_LINE(3)\n");
 331
 332         unittest(ni_route_to_register(brd0_src0, TRIGGER_LINE(4), T) ==
 333                  BIT(6),
 334                  "validate indirect route through brd0 to TRIGGER_LINE(4)\n");
 335         unittest(ni_route_to_register(brd0_src1, TRIGGER_LINE(4), T) ==
 336                  BIT(6),
 337                  "validate indirect route through brd0 to TRIGGER_LINE(4)\n");
 338         unittest(ni_route_to_register(brd1_src0, TRIGGER_LINE(3), T) ==
 339                  BIT(6),
 340                  "validate indirect route through brd1 to TRIGGER_LINE(3)\n");
 341         unittest(ni_route_to_register(brd1_src1, TRIGGER_LINE(3), T) ==
 342                  BIT(6),
 343                  "validate indirect route through brd1 to TRIGGER_LINE(3)\n");
 344         unittest(ni_route_to_register(brd2_src0, TRIGGER_LINE(2), T) ==
 345                  BIT(6),
 346                  "validate indirect route through brd2 to TRIGGER_LINE(2)\n");
 347         unittest(ni_route_to_register(brd2_src1, TRIGGER_LINE(2), T) ==
 348                  BIT(6),
 349                  "validate indirect route through brd2 to TRIGGER_LINE(2)\n");
 350         unittest(ni_route_to_register(brd3_src0, TRIGGER_LINE(1), T) ==
 351                  BIT(6),
 352                  "validate indirect route through brd3 to TRIGGER_LINE(1)\n");
 353         unittest(ni_route_to_register(brd3_src1, TRIGGER_LINE(1), T) ==
 354                  BIT(6),
 355                  "validate indirect route through brd3 to TRIGGER_LINE(1)\n");
 356 }
 357
 358 static void test_ni_lookup_route_register(void)
 359 {
 360         const struct ni_route_tables *T = &private.routing_tables;
 361
 362         init_pci_fake();
 363         unittest(ni_lookup_route_register(O(0), O(0), T) == -EINVAL,
 364                  "check for bad route 0-->0\n");
 365         unittest(ni_lookup_route_register(O(1), O(0), T) == 1,
 366                  "validate first destination\n");
 367         unittest(ni_lookup_route_register(O(6), O(5), T) == 6,
 368                  "validate middle destination\n");
 369         unittest(ni_lookup_route_register(O(8), O(9), T) == 8,
 370                  "validate last destination\n");
 371         unittest(ni_lookup_route_register(O(10), O(9), T) == -EINVAL,
 372                  "lookup invalid destination\n");
 373
 374         unittest(ni_lookup_route_register(rgout0_src0, TRIGGER_LINE(0), T) ==
 375                  -EINVAL,
 376                  "rgout0_src0: no direct lookup of indirect route\n");
 377         unittest(ni_lookup_route_register(rgout0_src0, NI_RGOUT0, T) == 0,
 378                  "rgout0_src0: lookup indirect route register\n");
 379         unittest(ni_lookup_route_register(rgout0_src1, TRIGGER_LINE(2), T) ==
 380                  -EINVAL,
 381                  "rgout0_src1: no direct lookup of indirect route\n");
 382         unittest(ni_lookup_route_register(rgout0_src1, NI_RGOUT0, T) == 1,
 383                  "rgout0_src1: lookup indirect route register\n");
 384
 385         unittest(ni_lookup_route_register(brd0_src0, TRIGGER_LINE(4), T) ==
 386                  -EINVAL,
 387                  "brd0_src0: no direct lookup of indirect route\n");
 388         unittest(ni_lookup_route_register(brd0_src0, NI_RTSI_BRD(0), T) == 0,
 389                  "brd0_src0: lookup indirect route register\n");
 390         unittest(ni_lookup_route_register(brd0_src1, TRIGGER_LINE(4), T) ==
 391                  -EINVAL,
 392                  "brd0_src1: no direct lookup of indirect route\n");
 393         unittest(ni_lookup_route_register(brd0_src1, NI_RTSI_BRD(0), T) == 1,
 394                  "brd0_src1: lookup indirect route register\n");
 395 }
 396
 397 static void test_route_is_valid(void)
 398 {
 399         const struct ni_route_tables *T = &private.routing_tables;
 400
 401         init_pci_fake();
 402         unittest(!route_is_valid(O(0), O(0), T),
 403                  "check for bad route 0-->0\n");
 404         unittest(route_is_valid(O(0), O(1), T),
 405                  "validate first destination\n");
 406         unittest(route_is_valid(O(5), O(6), T),
 407                  "validate middle destination\n");
 408         unittest(route_is_valid(O(8), O(9), T),
 409                  "validate last destination\n");
 410 }
 411
 412 static void test_ni_is_cmd_dest(void)
 413 {
 414         init_pci_fake();
 415         unittest(ni_is_cmd_dest(NI_AI_SampleClock),
 416                  "check that AI/SampleClock is cmd destination\n");
 417         unittest(ni_is_cmd_dest(NI_AI_StartTrigger),
 418                  "check that AI/StartTrigger is cmd destination\n");
 419         unittest(ni_is_cmd_dest(NI_AI_ConvertClock),
 420                  "check that AI/ConvertClock is cmd destination\n");
 421         unittest(ni_is_cmd_dest(NI_AO_SampleClock),
 422                  "check that AO/SampleClock is cmd destination\n");
 423         unittest(ni_is_cmd_dest(NI_DO_SampleClock),
 424                  "check that DO/SampleClock is cmd destination\n");
 425         unittest(!ni_is_cmd_dest(NI_AO_SampleClockTimebase),
 426                  "check that AO/SampleClockTimebase _not_ cmd destination\n");
 427 }
 428
 429 static void test_channel_is_pfi(void)
 430 {
 431         init_pci_fake();
 432         unittest(channel_is_pfi(NI_PFI(0)), "check First pfi channel\n");
 433         unittest(channel_is_pfi(NI_PFI(10)), "check 10th pfi channel\n");
 434         unittest(channel_is_pfi(NI_PFI(-1)), "check last pfi channel\n");
 435         unittest(!channel_is_pfi(NI_PFI(-1) + 1),
 436                  "check first non pfi channel\n");
 437 }
 438
 439 static void test_channel_is_rtsi(void)
 440 {
 441         init_pci_fake();
 442         unittest(channel_is_rtsi(TRIGGER_LINE(0)),
 443                  "check First rtsi channel\n");
 444         unittest(channel_is_rtsi(TRIGGER_LINE(3)),
 445                  "check 3rd rtsi channel\n");
 446         unittest(channel_is_rtsi(TRIGGER_LINE(-1)),
 447                  "check last rtsi channel\n");
 448         unittest(!channel_is_rtsi(TRIGGER_LINE(-1) + 1),
 449                  "check first non rtsi channel\n");
 450 }
 451
 452 static void test_ni_count_valid_routes(void)
 453 {
 454         const struct ni_route_tables *T = &private.routing_tables;
 455
 456         init_pci_fake();
 457         unittest(ni_count_valid_routes(T) == 57, "count all valid routes\n");
 458 }
 459
 460 static void test_ni_get_valid_routes(void)
 461 {
 462         const struct ni_route_tables *T = &private.routing_tables;
 463         unsigned int pair_data[2];
 464
 465         init_pci_fake();
 466         unittest(ni_get_valid_routes(T, 0, NULL) == 57,
 467                  "count all valid routes through ni_get_valid_routes\n");
 468
 469         unittest(ni_get_valid_routes(T, 1, pair_data) == 1,
 470                  "copied first valid route from ni_get_valid_routes\n");
 471         unittest(pair_data[0] == O(1),
 472                  "source of first valid pair from ni_get_valid_routes\n");
 473         unittest(pair_data[1] == O(0),
 474                  "destination of first valid pair from ni_get_valid_routes\n");
 475 }
 476
 477 static void test_ni_find_route_source(void)
 478 {
 479         const struct ni_route_tables *T = &private.routing_tables;
 480
 481         init_pci_fake();
 482         unittest(ni_find_route_source(4, O(4), T) == -EINVAL,
 483                  "check for bad source 4-->4\n");
 484         unittest(ni_find_route_source(0, O(1), T) == O(0),
 485                  "find first source\n");
 486         unittest(ni_find_route_source(4, O(6), T) == O(4),
 487                  "find middle source\n");
 488         unittest(ni_find_route_source(9, O(8), T) == O(9),
 489                  "find last source");
 490         unittest(ni_find_route_source(8, O(9), T) == O(8),
 491                  "find invalid source (without checking device routes)\n");
 492 }
 493
 494 static void test_route_register_is_valid(void)
 495 {
 496         const struct ni_route_tables *T = &private.routing_tables;
 497
 498         init_pci_fake();
 499         unittest(!route_register_is_valid(4, O(4), T),
 500                  "check for bad source 4-->4\n");
 501         unittest(route_register_is_valid(0, O(1), T),
 502                  "find first source\n");
 503         unittest(route_register_is_valid(4, O(6), T),
 504                  "find middle source\n");
 505         unittest(route_register_is_valid(9, O(8), T),
 506                  "find last source");
 507 }
 508
 509 static void test_ni_check_trigger_arg(void)
 510 {
 511         const struct ni_route_tables *T = &private.routing_tables;
 512
 513         init_pci_fake();
 514         unittest(ni_check_trigger_arg(0, O(0), T) == -EINVAL,
 515                  "check bad direct trigger arg for first reg->dest\n");
 516         unittest(ni_check_trigger_arg(0, O(1), T) == 0,
 517                  "check direct trigger arg for first reg->dest\n");
 518         unittest(ni_check_trigger_arg(4, O(6), T) == 0,
 519                  "check direct trigger arg for middle reg->dest\n");
 520         unittest(ni_check_trigger_arg(9, O(8), T) == 0,
 521                  "check direct trigger arg for last reg->dest\n");
 522
 523         unittest(ni_check_trigger_arg_roffs(-1, O(0), T, 1) == -EINVAL,
 524                  "check bad direct trigger arg for first reg->dest w/offs\n");
 525         unittest(ni_check_trigger_arg_roffs(0, O(1), T, 0) == 0,
 526                  "check direct trigger arg for first reg->dest w/offs\n");
 527         unittest(ni_check_trigger_arg_roffs(3, O(6), T, 1) == 0,
 528                  "check direct trigger arg for middle reg->dest w/offs\n");
 529         unittest(ni_check_trigger_arg_roffs(7, O(8), T, 2) == 0,
 530                  "check direct trigger arg for last reg->dest w/offs\n");
 531
 532         unittest(ni_check_trigger_arg(O(0), O(0), T) == -EINVAL,
 533                  "check bad trigger arg for first src->dest\n");
 534         unittest(ni_check_trigger_arg(O(0), O(1), T) == 0,
 535                  "check trigger arg for first src->dest\n");
 536         unittest(ni_check_trigger_arg(O(5), O(6), T) == 0,
 537                  "check trigger arg for middle src->dest\n");
 538         unittest(ni_check_trigger_arg(O(8), O(9), T) == 0,
 539                  "check trigger arg for last src->dest\n");
 540 }
 541
 542 static void test_ni_get_reg_value(void)
 543 {
 544         const struct ni_route_tables *T = &private.routing_tables;
 545
 546         init_pci_fake();
 547         unittest(ni_get_reg_value(0, O(0), T) == -1,
 548                  "check bad direct trigger arg for first reg->dest\n");
 549         unittest(ni_get_reg_value(0, O(1), T) == 0,
 550                  "check direct trigger arg for first reg->dest\n");
 551         unittest(ni_get_reg_value(4, O(6), T) == 4,
 552                  "check direct trigger arg for middle reg->dest\n");
 553         unittest(ni_get_reg_value(9, O(8), T) == 9,
 554                  "check direct trigger arg for last reg->dest\n");
 555
 556         unittest(ni_get_reg_value_roffs(-1, O(0), T, 1) == -1,
 557                  "check bad direct trigger arg for first reg->dest w/offs\n");
 558         unittest(ni_get_reg_value_roffs(0, O(1), T, 0) == 0,
 559                  "check direct trigger arg for first reg->dest w/offs\n");
 560         unittest(ni_get_reg_value_roffs(3, O(6), T, 1) == 4,
 561                  "check direct trigger arg for middle reg->dest w/offs\n");
 562         unittest(ni_get_reg_value_roffs(7, O(8), T, 2) == 9,
 563                  "check direct trigger arg for last reg->dest w/offs\n");
 564
 565         unittest(ni_get_reg_value(O(0), O(0), T) == -1,
 566                  "check bad trigger arg for first src->dest\n");
 567         unittest(ni_get_reg_value(O(0), O(1), T) == 0,
 568                  "check trigger arg for first src->dest\n");
 569         unittest(ni_get_reg_value(O(5), O(6), T) == 5,
 570                  "check trigger arg for middle src->dest\n");
 571         unittest(ni_get_reg_value(O(8), O(9), T) == 8,
 572                  "check trigger arg for last src->dest\n");
 573 }
 574
 575 /* **** BEGIN simple module entry/exit functions **** */
 576 static int __init ni_routes_unittest(void)
 577 {
 578         static const unittest_fptr unit_tests[] = {
 579                 test_ni_assign_device_routes,
 580                 test_ni_sort_device_routes,
 581                 test_ni_find_route_set,
 582                 test_ni_route_set_has_source,
 583                 test_ni_route_to_register,
 584                 test_ni_lookup_route_register,
 585                 test_route_is_valid,
 586                 test_ni_is_cmd_dest,
 587                 test_channel_is_pfi,
 588                 test_channel_is_rtsi,
 589                 test_ni_count_valid_routes,
 590                 test_ni_get_valid_routes,
 591                 test_ni_find_route_source,
 592                 test_route_register_is_valid,
 593                 test_ni_check_trigger_arg,
 594                 test_ni_get_reg_value,
 595                 NULL,
 596         };
 597
 598         exec_unittests("ni_routes", unit_tests);
 599         return 0;
 600 }
 601
 602 static void __exit ni_routes_unittest_exit(void) { }
 603
 604 module_init(ni_routes_unittest);
 605 module_exit(ni_routes_unittest_exit);
 606
 607 MODULE_AUTHOR("Comedi https://www.comedi.org");
 608 MODULE_DESCRIPTION("Comedi unit-tests for ni_routes module");
 609 MODULE_LICENSE("GPL");
 610 /* **** END simple module entry/exit functions **** */