1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * KUnit tests 4 * 5 * Copyright (C) 2020, Intel Corporation 6 * Author: Mika Westerberg <mika.westerberg@linux.intel.com> 7 */ 8 9 #include <kunit/test.h> 10 #include <linux/idr.h> 11 12 #include "tb.h" 13 #include "tunnel.h" 14 15 static int __ida_init(struct kunit_resource *res, void *context) 16 { 17 struct ida *ida = context; 18 19 ida_init(ida); 20 res->data = ida; 21 return 0; 22 } 23 24 static void __ida_destroy(struct kunit_resource *res) 25 { 26 struct ida *ida = res->data; 27 28 ida_destroy(ida); 29 } 30 31 static void kunit_ida_init(struct kunit *test, struct ida *ida) 32 { 33 kunit_alloc_resource(test, __ida_init, __ida_destroy, GFP_KERNEL, ida); 34 } 35 36 static struct tb_switch *alloc_switch(struct kunit *test, u64 route, 37 u8 upstream_port, u8 max_port_number) 38 { 39 struct tb_switch *sw; 40 size_t size; 41 int i; 42 43 sw = kunit_kzalloc(test, sizeof(*sw), GFP_KERNEL); 44 if (!sw) 45 return NULL; 46 47 sw->config.upstream_port_number = upstream_port; 48 sw->config.depth = tb_route_length(route); 49 sw->config.route_hi = upper_32_bits(route); 50 sw->config.route_lo = lower_32_bits(route); 51 sw->config.enabled = 0; 52 sw->config.max_port_number = max_port_number; 53 54 size = (sw->config.max_port_number + 1) * sizeof(*sw->ports); 55 sw->ports = kunit_kzalloc(test, size, GFP_KERNEL); 56 if (!sw->ports) 57 return NULL; 58 59 for (i = 0; i <= sw->config.max_port_number; i++) { 60 sw->ports[i].sw = sw; 61 sw->ports[i].port = i; 62 sw->ports[i].config.port_number = i; 63 if (i) { 64 kunit_ida_init(test, &sw->ports[i].in_hopids); 65 kunit_ida_init(test, &sw->ports[i].out_hopids); 66 } 67 } 68 69 return sw; 70 } 71 72 static struct tb_switch *alloc_host(struct kunit *test) 73 { 74 struct tb_switch *sw; 75 76 sw = alloc_switch(test, 0, 7, 13); 77 if (!sw) 78 return NULL; 79 80 sw->config.vendor_id = 0x8086; 81 sw->config.device_id = 0x9a1b; 82 83 sw->ports[0].config.type = TB_TYPE_PORT; 84 sw->ports[0].config.max_in_hop_id = 7; 85 sw->ports[0].config.max_out_hop_id = 7; 86 87 sw->ports[1].config.type = TB_TYPE_PORT; 88 sw->ports[1].config.max_in_hop_id = 19; 89 sw->ports[1].config.max_out_hop_id = 19; 90 sw->ports[1].total_credits = 60; 91 sw->ports[1].ctl_credits = 2; 92 sw->ports[1].dual_link_port = &sw->ports[2]; 93 94 sw->ports[2].config.type = TB_TYPE_PORT; 95 sw->ports[2].config.max_in_hop_id = 19; 96 sw->ports[2].config.max_out_hop_id = 19; 97 sw->ports[2].total_credits = 60; 98 sw->ports[2].ctl_credits = 2; 99 sw->ports[2].dual_link_port = &sw->ports[1]; 100 sw->ports[2].link_nr = 1; 101 102 sw->ports[3].config.type = TB_TYPE_PORT; 103 sw->ports[3].config.max_in_hop_id = 19; 104 sw->ports[3].config.max_out_hop_id = 19; 105 sw->ports[3].total_credits = 60; 106 sw->ports[3].ctl_credits = 2; 107 sw->ports[3].dual_link_port = &sw->ports[4]; 108 109 sw->ports[4].config.type = TB_TYPE_PORT; 110 sw->ports[4].config.max_in_hop_id = 19; 111 sw->ports[4].config.max_out_hop_id = 19; 112 sw->ports[4].total_credits = 60; 113 sw->ports[4].ctl_credits = 2; 114 sw->ports[4].dual_link_port = &sw->ports[3]; 115 sw->ports[4].link_nr = 1; 116 117 sw->ports[5].config.type = TB_TYPE_DP_HDMI_IN; 118 sw->ports[5].config.max_in_hop_id = 9; 119 sw->ports[5].config.max_out_hop_id = 9; 120 sw->ports[5].cap_adap = -1; 121 122 sw->ports[6].config.type = TB_TYPE_DP_HDMI_IN; 123 sw->ports[6].config.max_in_hop_id = 9; 124 sw->ports[6].config.max_out_hop_id = 9; 125 sw->ports[6].cap_adap = -1; 126 127 sw->ports[7].config.type = TB_TYPE_NHI; 128 sw->ports[7].config.max_in_hop_id = 11; 129 sw->ports[7].config.max_out_hop_id = 11; 130 sw->ports[7].config.nfc_credits = 0x41800000; 131 132 sw->ports[8].config.type = TB_TYPE_PCIE_DOWN; 133 sw->ports[8].config.max_in_hop_id = 8; 134 sw->ports[8].config.max_out_hop_id = 8; 135 136 sw->ports[9].config.type = TB_TYPE_PCIE_DOWN; 137 sw->ports[9].config.max_in_hop_id = 8; 138 sw->ports[9].config.max_out_hop_id = 8; 139 140 sw->ports[10].disabled = true; 141 sw->ports[11].disabled = true; 142 143 sw->ports[12].config.type = TB_TYPE_USB3_DOWN; 144 sw->ports[12].config.max_in_hop_id = 8; 145 sw->ports[12].config.max_out_hop_id = 8; 146 147 sw->ports[13].config.type = TB_TYPE_USB3_DOWN; 148 sw->ports[13].config.max_in_hop_id = 8; 149 sw->ports[13].config.max_out_hop_id = 8; 150 151 return sw; 152 } 153 154 static struct tb_switch *alloc_host_usb4(struct kunit *test) 155 { 156 struct tb_switch *sw; 157 158 sw = alloc_host(test); 159 if (!sw) 160 return NULL; 161 162 sw->generation = 4; 163 sw->credit_allocation = true; 164 sw->max_usb3_credits = 32; 165 sw->min_dp_aux_credits = 1; 166 sw->min_dp_main_credits = 0; 167 sw->max_pcie_credits = 64; 168 sw->max_dma_credits = 14; 169 170 return sw; 171 } 172 173 static struct tb_switch *alloc_dev_default(struct kunit *test, 174 struct tb_switch *parent, 175 u64 route, bool bonded) 176 { 177 struct tb_port *port, *upstream_port; 178 struct tb_switch *sw; 179 180 sw = alloc_switch(test, route, 1, 19); 181 if (!sw) 182 return NULL; 183 184 sw->config.vendor_id = 0x8086; 185 sw->config.device_id = 0x15ef; 186 187 sw->ports[0].config.type = TB_TYPE_PORT; 188 sw->ports[0].config.max_in_hop_id = 8; 189 sw->ports[0].config.max_out_hop_id = 8; 190 191 sw->ports[1].config.type = TB_TYPE_PORT; 192 sw->ports[1].config.max_in_hop_id = 19; 193 sw->ports[1].config.max_out_hop_id = 19; 194 sw->ports[1].total_credits = 60; 195 sw->ports[1].ctl_credits = 2; 196 sw->ports[1].dual_link_port = &sw->ports[2]; 197 198 sw->ports[2].config.type = TB_TYPE_PORT; 199 sw->ports[2].config.max_in_hop_id = 19; 200 sw->ports[2].config.max_out_hop_id = 19; 201 sw->ports[2].total_credits = 60; 202 sw->ports[2].ctl_credits = 2; 203 sw->ports[2].dual_link_port = &sw->ports[1]; 204 sw->ports[2].link_nr = 1; 205 206 sw->ports[3].config.type = TB_TYPE_PORT; 207 sw->ports[3].config.max_in_hop_id = 19; 208 sw->ports[3].config.max_out_hop_id = 19; 209 sw->ports[3].total_credits = 60; 210 sw->ports[3].ctl_credits = 2; 211 sw->ports[3].dual_link_port = &sw->ports[4]; 212 213 sw->ports[4].config.type = TB_TYPE_PORT; 214 sw->ports[4].config.max_in_hop_id = 19; 215 sw->ports[4].config.max_out_hop_id = 19; 216 sw->ports[4].total_credits = 60; 217 sw->ports[4].ctl_credits = 2; 218 sw->ports[4].dual_link_port = &sw->ports[3]; 219 sw->ports[4].link_nr = 1; 220 221 sw->ports[5].config.type = TB_TYPE_PORT; 222 sw->ports[5].config.max_in_hop_id = 19; 223 sw->ports[5].config.max_out_hop_id = 19; 224 sw->ports[5].total_credits = 60; 225 sw->ports[5].ctl_credits = 2; 226 sw->ports[5].dual_link_port = &sw->ports[6]; 227 228 sw->ports[6].config.type = TB_TYPE_PORT; 229 sw->ports[6].config.max_in_hop_id = 19; 230 sw->ports[6].config.max_out_hop_id = 19; 231 sw->ports[6].total_credits = 60; 232 sw->ports[6].ctl_credits = 2; 233 sw->ports[6].dual_link_port = &sw->ports[5]; 234 sw->ports[6].link_nr = 1; 235 236 sw->ports[7].config.type = TB_TYPE_PORT; 237 sw->ports[7].config.max_in_hop_id = 19; 238 sw->ports[7].config.max_out_hop_id = 19; 239 sw->ports[7].total_credits = 60; 240 sw->ports[7].ctl_credits = 2; 241 sw->ports[7].dual_link_port = &sw->ports[8]; 242 243 sw->ports[8].config.type = TB_TYPE_PORT; 244 sw->ports[8].config.max_in_hop_id = 19; 245 sw->ports[8].config.max_out_hop_id = 19; 246 sw->ports[8].total_credits = 60; 247 sw->ports[8].ctl_credits = 2; 248 sw->ports[8].dual_link_port = &sw->ports[7]; 249 sw->ports[8].link_nr = 1; 250 251 sw->ports[9].config.type = TB_TYPE_PCIE_UP; 252 sw->ports[9].config.max_in_hop_id = 8; 253 sw->ports[9].config.max_out_hop_id = 8; 254 255 sw->ports[10].config.type = TB_TYPE_PCIE_DOWN; 256 sw->ports[10].config.max_in_hop_id = 8; 257 sw->ports[10].config.max_out_hop_id = 8; 258 259 sw->ports[11].config.type = TB_TYPE_PCIE_DOWN; 260 sw->ports[11].config.max_in_hop_id = 8; 261 sw->ports[11].config.max_out_hop_id = 8; 262 263 sw->ports[12].config.type = TB_TYPE_PCIE_DOWN; 264 sw->ports[12].config.max_in_hop_id = 8; 265 sw->ports[12].config.max_out_hop_id = 8; 266 267 sw->ports[13].config.type = TB_TYPE_DP_HDMI_OUT; 268 sw->ports[13].config.max_in_hop_id = 9; 269 sw->ports[13].config.max_out_hop_id = 9; 270 sw->ports[13].cap_adap = -1; 271 272 sw->ports[14].config.type = TB_TYPE_DP_HDMI_OUT; 273 sw->ports[14].config.max_in_hop_id = 9; 274 sw->ports[14].config.max_out_hop_id = 9; 275 sw->ports[14].cap_adap = -1; 276 277 sw->ports[15].disabled = true; 278 279 sw->ports[16].config.type = TB_TYPE_USB3_UP; 280 sw->ports[16].config.max_in_hop_id = 8; 281 sw->ports[16].config.max_out_hop_id = 8; 282 283 sw->ports[17].config.type = TB_TYPE_USB3_DOWN; 284 sw->ports[17].config.max_in_hop_id = 8; 285 sw->ports[17].config.max_out_hop_id = 8; 286 287 sw->ports[18].config.type = TB_TYPE_USB3_DOWN; 288 sw->ports[18].config.max_in_hop_id = 8; 289 sw->ports[18].config.max_out_hop_id = 8; 290 291 sw->ports[19].config.type = TB_TYPE_USB3_DOWN; 292 sw->ports[19].config.max_in_hop_id = 8; 293 sw->ports[19].config.max_out_hop_id = 8; 294 295 if (!parent) 296 return sw; 297 298 /* Link them */ 299 upstream_port = tb_upstream_port(sw); 300 port = tb_port_at(route, parent); 301 port->remote = upstream_port; 302 upstream_port->remote = port; 303 if (port->dual_link_port && upstream_port->dual_link_port) { 304 port->dual_link_port->remote = upstream_port->dual_link_port; 305 upstream_port->dual_link_port->remote = port->dual_link_port; 306 307 if (bonded) { 308 /* Bonding is used */ 309 port->bonded = true; 310 port->total_credits *= 2; 311 port->dual_link_port->bonded = true; 312 port->dual_link_port->total_credits = 0; 313 upstream_port->bonded = true; 314 upstream_port->total_credits *= 2; 315 upstream_port->dual_link_port->bonded = true; 316 upstream_port->dual_link_port->total_credits = 0; 317 } 318 } 319 320 return sw; 321 } 322 323 static struct tb_switch *alloc_dev_with_dpin(struct kunit *test, 324 struct tb_switch *parent, 325 u64 route, bool bonded) 326 { 327 struct tb_switch *sw; 328 329 sw = alloc_dev_default(test, parent, route, bonded); 330 if (!sw) 331 return NULL; 332 333 sw->ports[13].config.type = TB_TYPE_DP_HDMI_IN; 334 sw->ports[13].config.max_in_hop_id = 9; 335 sw->ports[13].config.max_out_hop_id = 9; 336 337 sw->ports[14].config.type = TB_TYPE_DP_HDMI_IN; 338 sw->ports[14].config.max_in_hop_id = 9; 339 sw->ports[14].config.max_out_hop_id = 9; 340 341 return sw; 342 } 343 344 static struct tb_switch *alloc_dev_usb4(struct kunit *test, 345 struct tb_switch *parent, 346 u64 route, bool bonded) 347 { 348 struct tb_switch *sw; 349 350 sw = alloc_dev_default(test, parent, route, bonded); 351 if (!sw) 352 return NULL; 353 354 sw->generation = 4; 355 sw->credit_allocation = true; 356 sw->max_usb3_credits = 14; 357 sw->min_dp_aux_credits = 1; 358 sw->min_dp_main_credits = 18; 359 sw->max_pcie_credits = 32; 360 sw->max_dma_credits = 14; 361 362 return sw; 363 } 364 365 static void tb_test_path_basic(struct kunit *test) 366 { 367 struct tb_port *src_port, *dst_port, *p; 368 struct tb_switch *host; 369 370 host = alloc_host(test); 371 372 src_port = &host->ports[5]; 373 dst_port = src_port; 374 375 p = tb_next_port_on_path(src_port, dst_port, NULL); 376 KUNIT_EXPECT_PTR_EQ(test, p, dst_port); 377 378 p = tb_next_port_on_path(src_port, dst_port, p); 379 KUNIT_EXPECT_TRUE(test, !p); 380 } 381 382 static void tb_test_path_not_connected_walk(struct kunit *test) 383 { 384 struct tb_port *src_port, *dst_port, *p; 385 struct tb_switch *host, *dev; 386 387 host = alloc_host(test); 388 /* No connection between host and dev */ 389 dev = alloc_dev_default(test, NULL, 3, true); 390 391 src_port = &host->ports[12]; 392 dst_port = &dev->ports[16]; 393 394 p = tb_next_port_on_path(src_port, dst_port, NULL); 395 KUNIT_EXPECT_PTR_EQ(test, p, src_port); 396 397 p = tb_next_port_on_path(src_port, dst_port, p); 398 KUNIT_EXPECT_PTR_EQ(test, p, &host->ports[3]); 399 400 p = tb_next_port_on_path(src_port, dst_port, p); 401 KUNIT_EXPECT_TRUE(test, !p); 402 403 /* Other direction */ 404 405 p = tb_next_port_on_path(dst_port, src_port, NULL); 406 KUNIT_EXPECT_PTR_EQ(test, p, dst_port); 407 408 p = tb_next_port_on_path(dst_port, src_port, p); 409 KUNIT_EXPECT_PTR_EQ(test, p, &dev->ports[1]); 410 411 p = tb_next_port_on_path(dst_port, src_port, p); 412 KUNIT_EXPECT_TRUE(test, !p); 413 } 414 415 struct port_expectation { 416 u64 route; 417 u8 port; 418 enum tb_port_type type; 419 }; 420 421 static void tb_test_path_single_hop_walk(struct kunit *test) 422 { 423 /* 424 * Walks from Host PCIe downstream port to Device #1 PCIe 425 * upstream port. 426 * 427 * [Host] 428 * 1 | 429 * 1 | 430 * [Device] 431 */ 432 static const struct port_expectation test_data[] = { 433 { .route = 0x0, .port = 8, .type = TB_TYPE_PCIE_DOWN }, 434 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 435 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 436 { .route = 0x1, .port = 9, .type = TB_TYPE_PCIE_UP }, 437 }; 438 struct tb_port *src_port, *dst_port, *p; 439 struct tb_switch *host, *dev; 440 int i; 441 442 host = alloc_host(test); 443 dev = alloc_dev_default(test, host, 1, true); 444 445 src_port = &host->ports[8]; 446 dst_port = &dev->ports[9]; 447 448 /* Walk both directions */ 449 450 i = 0; 451 tb_for_each_port_on_path(src_port, dst_port, p) { 452 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 453 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 454 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 455 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 456 test_data[i].type); 457 i++; 458 } 459 460 KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data)); 461 462 i = ARRAY_SIZE(test_data) - 1; 463 tb_for_each_port_on_path(dst_port, src_port, p) { 464 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 465 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 466 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 467 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 468 test_data[i].type); 469 i--; 470 } 471 472 KUNIT_EXPECT_EQ(test, i, -1); 473 } 474 475 static void tb_test_path_daisy_chain_walk(struct kunit *test) 476 { 477 /* 478 * Walks from Host DP IN to Device #2 DP OUT. 479 * 480 * [Host] 481 * 1 | 482 * 1 | 483 * [Device #1] 484 * 3 / 485 * 1 / 486 * [Device #2] 487 */ 488 static const struct port_expectation test_data[] = { 489 { .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN }, 490 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 491 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 492 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 493 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 494 { .route = 0x301, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 495 }; 496 struct tb_port *src_port, *dst_port, *p; 497 struct tb_switch *host, *dev1, *dev2; 498 int i; 499 500 host = alloc_host(test); 501 dev1 = alloc_dev_default(test, host, 0x1, true); 502 dev2 = alloc_dev_default(test, dev1, 0x301, true); 503 504 src_port = &host->ports[5]; 505 dst_port = &dev2->ports[13]; 506 507 /* Walk both directions */ 508 509 i = 0; 510 tb_for_each_port_on_path(src_port, dst_port, p) { 511 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 512 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 513 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 514 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 515 test_data[i].type); 516 i++; 517 } 518 519 KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data)); 520 521 i = ARRAY_SIZE(test_data) - 1; 522 tb_for_each_port_on_path(dst_port, src_port, p) { 523 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 524 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 525 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 526 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 527 test_data[i].type); 528 i--; 529 } 530 531 KUNIT_EXPECT_EQ(test, i, -1); 532 } 533 534 static void tb_test_path_simple_tree_walk(struct kunit *test) 535 { 536 /* 537 * Walks from Host DP IN to Device #3 DP OUT. 538 * 539 * [Host] 540 * 1 | 541 * 1 | 542 * [Device #1] 543 * 3 / | 5 \ 7 544 * 1 / | \ 1 545 * [Device #2] | [Device #4] 546 * | 1 547 * [Device #3] 548 */ 549 static const struct port_expectation test_data[] = { 550 { .route = 0x0, .port = 5, .type = TB_TYPE_DP_HDMI_IN }, 551 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 552 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 553 { .route = 0x1, .port = 5, .type = TB_TYPE_PORT }, 554 { .route = 0x501, .port = 1, .type = TB_TYPE_PORT }, 555 { .route = 0x501, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 556 }; 557 struct tb_port *src_port, *dst_port, *p; 558 struct tb_switch *host, *dev1, *dev3; 559 int i; 560 561 host = alloc_host(test); 562 dev1 = alloc_dev_default(test, host, 0x1, true); 563 alloc_dev_default(test, dev1, 0x301, true); 564 dev3 = alloc_dev_default(test, dev1, 0x501, true); 565 alloc_dev_default(test, dev1, 0x701, true); 566 567 src_port = &host->ports[5]; 568 dst_port = &dev3->ports[13]; 569 570 /* Walk both directions */ 571 572 i = 0; 573 tb_for_each_port_on_path(src_port, dst_port, p) { 574 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 575 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 576 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 577 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 578 test_data[i].type); 579 i++; 580 } 581 582 KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data)); 583 584 i = ARRAY_SIZE(test_data) - 1; 585 tb_for_each_port_on_path(dst_port, src_port, p) { 586 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 587 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 588 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 589 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 590 test_data[i].type); 591 i--; 592 } 593 594 KUNIT_EXPECT_EQ(test, i, -1); 595 } 596 597 static void tb_test_path_complex_tree_walk(struct kunit *test) 598 { 599 /* 600 * Walks from Device #3 DP IN to Device #9 DP OUT. 601 * 602 * [Host] 603 * 1 | 604 * 1 | 605 * [Device #1] 606 * 3 / | 5 \ 7 607 * 1 / | \ 1 608 * [Device #2] | [Device #5] 609 * 5 | | 1 \ 7 610 * 1 | [Device #4] \ 1 611 * [Device #3] [Device #6] 612 * 3 / 613 * 1 / 614 * [Device #7] 615 * 3 / | 5 616 * 1 / | 617 * [Device #8] | 1 618 * [Device #9] 619 */ 620 static const struct port_expectation test_data[] = { 621 { .route = 0x50301, .port = 13, .type = TB_TYPE_DP_HDMI_IN }, 622 { .route = 0x50301, .port = 1, .type = TB_TYPE_PORT }, 623 { .route = 0x301, .port = 5, .type = TB_TYPE_PORT }, 624 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 625 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 626 { .route = 0x1, .port = 7, .type = TB_TYPE_PORT }, 627 { .route = 0x701, .port = 1, .type = TB_TYPE_PORT }, 628 { .route = 0x701, .port = 7, .type = TB_TYPE_PORT }, 629 { .route = 0x70701, .port = 1, .type = TB_TYPE_PORT }, 630 { .route = 0x70701, .port = 3, .type = TB_TYPE_PORT }, 631 { .route = 0x3070701, .port = 1, .type = TB_TYPE_PORT }, 632 { .route = 0x3070701, .port = 5, .type = TB_TYPE_PORT }, 633 { .route = 0x503070701, .port = 1, .type = TB_TYPE_PORT }, 634 { .route = 0x503070701, .port = 14, .type = TB_TYPE_DP_HDMI_OUT }, 635 }; 636 struct tb_switch *host, *dev1, *dev2, *dev3, *dev5, *dev6, *dev7, *dev9; 637 struct tb_port *src_port, *dst_port, *p; 638 int i; 639 640 host = alloc_host(test); 641 dev1 = alloc_dev_default(test, host, 0x1, true); 642 dev2 = alloc_dev_default(test, dev1, 0x301, true); 643 dev3 = alloc_dev_with_dpin(test, dev2, 0x50301, true); 644 alloc_dev_default(test, dev1, 0x501, true); 645 dev5 = alloc_dev_default(test, dev1, 0x701, true); 646 dev6 = alloc_dev_default(test, dev5, 0x70701, true); 647 dev7 = alloc_dev_default(test, dev6, 0x3070701, true); 648 alloc_dev_default(test, dev7, 0x303070701, true); 649 dev9 = alloc_dev_default(test, dev7, 0x503070701, true); 650 651 src_port = &dev3->ports[13]; 652 dst_port = &dev9->ports[14]; 653 654 /* Walk both directions */ 655 656 i = 0; 657 tb_for_each_port_on_path(src_port, dst_port, p) { 658 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 659 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 660 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 661 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 662 test_data[i].type); 663 i++; 664 } 665 666 KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data)); 667 668 i = ARRAY_SIZE(test_data) - 1; 669 tb_for_each_port_on_path(dst_port, src_port, p) { 670 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 671 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 672 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 673 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 674 test_data[i].type); 675 i--; 676 } 677 678 KUNIT_EXPECT_EQ(test, i, -1); 679 } 680 681 static void tb_test_path_max_length_walk(struct kunit *test) 682 { 683 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6; 684 struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12; 685 struct tb_port *src_port, *dst_port, *p; 686 int i; 687 688 /* 689 * Walks from Device #6 DP IN to Device #12 DP OUT. 690 * 691 * [Host] 692 * 1 / \ 3 693 * 1 / \ 1 694 * [Device #1] [Device #7] 695 * 3 | | 3 696 * 1 | | 1 697 * [Device #2] [Device #8] 698 * 3 | | 3 699 * 1 | | 1 700 * [Device #3] [Device #9] 701 * 3 | | 3 702 * 1 | | 1 703 * [Device #4] [Device #10] 704 * 3 | | 3 705 * 1 | | 1 706 * [Device #5] [Device #11] 707 * 3 | | 3 708 * 1 | | 1 709 * [Device #6] [Device #12] 710 */ 711 static const struct port_expectation test_data[] = { 712 { .route = 0x30303030301, .port = 13, .type = TB_TYPE_DP_HDMI_IN }, 713 { .route = 0x30303030301, .port = 1, .type = TB_TYPE_PORT }, 714 { .route = 0x303030301, .port = 3, .type = TB_TYPE_PORT }, 715 { .route = 0x303030301, .port = 1, .type = TB_TYPE_PORT }, 716 { .route = 0x3030301, .port = 3, .type = TB_TYPE_PORT }, 717 { .route = 0x3030301, .port = 1, .type = TB_TYPE_PORT }, 718 { .route = 0x30301, .port = 3, .type = TB_TYPE_PORT }, 719 { .route = 0x30301, .port = 1, .type = TB_TYPE_PORT }, 720 { .route = 0x301, .port = 3, .type = TB_TYPE_PORT }, 721 { .route = 0x301, .port = 1, .type = TB_TYPE_PORT }, 722 { .route = 0x1, .port = 3, .type = TB_TYPE_PORT }, 723 { .route = 0x1, .port = 1, .type = TB_TYPE_PORT }, 724 { .route = 0x0, .port = 1, .type = TB_TYPE_PORT }, 725 { .route = 0x0, .port = 3, .type = TB_TYPE_PORT }, 726 { .route = 0x3, .port = 1, .type = TB_TYPE_PORT }, 727 { .route = 0x3, .port = 3, .type = TB_TYPE_PORT }, 728 { .route = 0x303, .port = 1, .type = TB_TYPE_PORT }, 729 { .route = 0x303, .port = 3, .type = TB_TYPE_PORT }, 730 { .route = 0x30303, .port = 1, .type = TB_TYPE_PORT }, 731 { .route = 0x30303, .port = 3, .type = TB_TYPE_PORT }, 732 { .route = 0x3030303, .port = 1, .type = TB_TYPE_PORT }, 733 { .route = 0x3030303, .port = 3, .type = TB_TYPE_PORT }, 734 { .route = 0x303030303, .port = 1, .type = TB_TYPE_PORT }, 735 { .route = 0x303030303, .port = 3, .type = TB_TYPE_PORT }, 736 { .route = 0x30303030303, .port = 1, .type = TB_TYPE_PORT }, 737 { .route = 0x30303030303, .port = 13, .type = TB_TYPE_DP_HDMI_OUT }, 738 }; 739 740 host = alloc_host(test); 741 dev1 = alloc_dev_default(test, host, 0x1, true); 742 dev2 = alloc_dev_default(test, dev1, 0x301, true); 743 dev3 = alloc_dev_default(test, dev2, 0x30301, true); 744 dev4 = alloc_dev_default(test, dev3, 0x3030301, true); 745 dev5 = alloc_dev_default(test, dev4, 0x303030301, true); 746 dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true); 747 dev7 = alloc_dev_default(test, host, 0x3, true); 748 dev8 = alloc_dev_default(test, dev7, 0x303, true); 749 dev9 = alloc_dev_default(test, dev8, 0x30303, true); 750 dev10 = alloc_dev_default(test, dev9, 0x3030303, true); 751 dev11 = alloc_dev_default(test, dev10, 0x303030303, true); 752 dev12 = alloc_dev_default(test, dev11, 0x30303030303, true); 753 754 src_port = &dev6->ports[13]; 755 dst_port = &dev12->ports[13]; 756 757 /* Walk both directions */ 758 759 i = 0; 760 tb_for_each_port_on_path(src_port, dst_port, p) { 761 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 762 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 763 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 764 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 765 test_data[i].type); 766 i++; 767 } 768 769 KUNIT_EXPECT_EQ(test, i, ARRAY_SIZE(test_data)); 770 771 i = ARRAY_SIZE(test_data) - 1; 772 tb_for_each_port_on_path(dst_port, src_port, p) { 773 KUNIT_EXPECT_TRUE(test, i < ARRAY_SIZE(test_data)); 774 KUNIT_EXPECT_EQ(test, tb_route(p->sw), test_data[i].route); 775 KUNIT_EXPECT_EQ(test, p->port, test_data[i].port); 776 KUNIT_EXPECT_EQ(test, (enum tb_port_type)p->config.type, 777 test_data[i].type); 778 i--; 779 } 780 781 KUNIT_EXPECT_EQ(test, i, -1); 782 } 783 784 static void tb_test_path_not_connected(struct kunit *test) 785 { 786 struct tb_switch *host, *dev1, *dev2; 787 struct tb_port *down, *up; 788 struct tb_path *path; 789 790 host = alloc_host(test); 791 dev1 = alloc_dev_default(test, host, 0x3, false); 792 /* Not connected to anything */ 793 dev2 = alloc_dev_default(test, NULL, 0x303, false); 794 795 down = &dev1->ports[10]; 796 up = &dev2->ports[9]; 797 798 path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down"); 799 KUNIT_ASSERT_TRUE(test, path == NULL); 800 path = tb_path_alloc(NULL, down, 8, up, 8, 1, "PCIe Down"); 801 KUNIT_ASSERT_TRUE(test, path == NULL); 802 } 803 804 struct hop_expectation { 805 u64 route; 806 u8 in_port; 807 enum tb_port_type in_type; 808 u8 out_port; 809 enum tb_port_type out_type; 810 }; 811 812 static void tb_test_path_not_bonded_lane0(struct kunit *test) 813 { 814 /* 815 * PCIe path from host to device using lane 0. 816 * 817 * [Host] 818 * 3 |: 4 819 * 1 |: 2 820 * [Device] 821 */ 822 static const struct hop_expectation test_data[] = { 823 { 824 .route = 0x0, 825 .in_port = 9, 826 .in_type = TB_TYPE_PCIE_DOWN, 827 .out_port = 3, 828 .out_type = TB_TYPE_PORT, 829 }, 830 { 831 .route = 0x3, 832 .in_port = 1, 833 .in_type = TB_TYPE_PORT, 834 .out_port = 9, 835 .out_type = TB_TYPE_PCIE_UP, 836 }, 837 }; 838 struct tb_switch *host, *dev; 839 struct tb_port *down, *up; 840 struct tb_path *path; 841 int i; 842 843 host = alloc_host(test); 844 dev = alloc_dev_default(test, host, 0x3, false); 845 846 down = &host->ports[9]; 847 up = &dev->ports[9]; 848 849 path = tb_path_alloc(NULL, down, 8, up, 8, 0, "PCIe Down"); 850 KUNIT_ASSERT_TRUE(test, path != NULL); 851 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 852 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 853 const struct tb_port *in_port, *out_port; 854 855 in_port = path->hops[i].in_port; 856 out_port = path->hops[i].out_port; 857 858 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 859 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 860 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 861 test_data[i].in_type); 862 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 863 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 864 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 865 test_data[i].out_type); 866 } 867 tb_path_free(path); 868 } 869 870 static void tb_test_path_not_bonded_lane1(struct kunit *test) 871 { 872 /* 873 * DP Video path from host to device using lane 1. Paths like 874 * these are only used with Thunderbolt 1 devices where lane 875 * bonding is not possible. USB4 specifically does not allow 876 * paths like this (you either use lane 0 where lane 1 is 877 * disabled or both lanes are bonded). 878 * 879 * [Host] 880 * 1 :| 2 881 * 1 :| 2 882 * [Device] 883 */ 884 static const struct hop_expectation test_data[] = { 885 { 886 .route = 0x0, 887 .in_port = 5, 888 .in_type = TB_TYPE_DP_HDMI_IN, 889 .out_port = 2, 890 .out_type = TB_TYPE_PORT, 891 }, 892 { 893 .route = 0x1, 894 .in_port = 2, 895 .in_type = TB_TYPE_PORT, 896 .out_port = 13, 897 .out_type = TB_TYPE_DP_HDMI_OUT, 898 }, 899 }; 900 struct tb_switch *host, *dev; 901 struct tb_port *in, *out; 902 struct tb_path *path; 903 int i; 904 905 host = alloc_host(test); 906 dev = alloc_dev_default(test, host, 0x1, false); 907 908 in = &host->ports[5]; 909 out = &dev->ports[13]; 910 911 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 912 KUNIT_ASSERT_TRUE(test, path != NULL); 913 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 914 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 915 const struct tb_port *in_port, *out_port; 916 917 in_port = path->hops[i].in_port; 918 out_port = path->hops[i].out_port; 919 920 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 921 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 922 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 923 test_data[i].in_type); 924 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 925 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 926 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 927 test_data[i].out_type); 928 } 929 tb_path_free(path); 930 } 931 932 static void tb_test_path_not_bonded_lane1_chain(struct kunit *test) 933 { 934 /* 935 * DP Video path from host to device 3 using lane 1. 936 * 937 * [Host] 938 * 1 :| 2 939 * 1 :| 2 940 * [Device #1] 941 * 7 :| 8 942 * 1 :| 2 943 * [Device #2] 944 * 5 :| 6 945 * 1 :| 2 946 * [Device #3] 947 */ 948 static const struct hop_expectation test_data[] = { 949 { 950 .route = 0x0, 951 .in_port = 5, 952 .in_type = TB_TYPE_DP_HDMI_IN, 953 .out_port = 2, 954 .out_type = TB_TYPE_PORT, 955 }, 956 { 957 .route = 0x1, 958 .in_port = 2, 959 .in_type = TB_TYPE_PORT, 960 .out_port = 8, 961 .out_type = TB_TYPE_PORT, 962 }, 963 { 964 .route = 0x701, 965 .in_port = 2, 966 .in_type = TB_TYPE_PORT, 967 .out_port = 6, 968 .out_type = TB_TYPE_PORT, 969 }, 970 { 971 .route = 0x50701, 972 .in_port = 2, 973 .in_type = TB_TYPE_PORT, 974 .out_port = 13, 975 .out_type = TB_TYPE_DP_HDMI_OUT, 976 }, 977 }; 978 struct tb_switch *host, *dev1, *dev2, *dev3; 979 struct tb_port *in, *out; 980 struct tb_path *path; 981 int i; 982 983 host = alloc_host(test); 984 dev1 = alloc_dev_default(test, host, 0x1, false); 985 dev2 = alloc_dev_default(test, dev1, 0x701, false); 986 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 987 988 in = &host->ports[5]; 989 out = &dev3->ports[13]; 990 991 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 992 KUNIT_ASSERT_TRUE(test, path != NULL); 993 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 994 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 995 const struct tb_port *in_port, *out_port; 996 997 in_port = path->hops[i].in_port; 998 out_port = path->hops[i].out_port; 999 1000 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1001 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1002 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1003 test_data[i].in_type); 1004 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1005 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1006 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1007 test_data[i].out_type); 1008 } 1009 tb_path_free(path); 1010 } 1011 1012 static void tb_test_path_not_bonded_lane1_chain_reverse(struct kunit *test) 1013 { 1014 /* 1015 * DP Video path from device 3 to host using lane 1. 1016 * 1017 * [Host] 1018 * 1 :| 2 1019 * 1 :| 2 1020 * [Device #1] 1021 * 7 :| 8 1022 * 1 :| 2 1023 * [Device #2] 1024 * 5 :| 6 1025 * 1 :| 2 1026 * [Device #3] 1027 */ 1028 static const struct hop_expectation test_data[] = { 1029 { 1030 .route = 0x50701, 1031 .in_port = 13, 1032 .in_type = TB_TYPE_DP_HDMI_IN, 1033 .out_port = 2, 1034 .out_type = TB_TYPE_PORT, 1035 }, 1036 { 1037 .route = 0x701, 1038 .in_port = 6, 1039 .in_type = TB_TYPE_PORT, 1040 .out_port = 2, 1041 .out_type = TB_TYPE_PORT, 1042 }, 1043 { 1044 .route = 0x1, 1045 .in_port = 8, 1046 .in_type = TB_TYPE_PORT, 1047 .out_port = 2, 1048 .out_type = TB_TYPE_PORT, 1049 }, 1050 { 1051 .route = 0x0, 1052 .in_port = 2, 1053 .in_type = TB_TYPE_PORT, 1054 .out_port = 5, 1055 .out_type = TB_TYPE_DP_HDMI_IN, 1056 }, 1057 }; 1058 struct tb_switch *host, *dev1, *dev2, *dev3; 1059 struct tb_port *in, *out; 1060 struct tb_path *path; 1061 int i; 1062 1063 host = alloc_host(test); 1064 dev1 = alloc_dev_default(test, host, 0x1, false); 1065 dev2 = alloc_dev_default(test, dev1, 0x701, false); 1066 dev3 = alloc_dev_with_dpin(test, dev2, 0x50701, false); 1067 1068 in = &dev3->ports[13]; 1069 out = &host->ports[5]; 1070 1071 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1072 KUNIT_ASSERT_TRUE(test, path != NULL); 1073 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 1074 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1075 const struct tb_port *in_port, *out_port; 1076 1077 in_port = path->hops[i].in_port; 1078 out_port = path->hops[i].out_port; 1079 1080 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1081 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1082 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1083 test_data[i].in_type); 1084 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1085 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1086 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1087 test_data[i].out_type); 1088 } 1089 tb_path_free(path); 1090 } 1091 1092 static void tb_test_path_mixed_chain(struct kunit *test) 1093 { 1094 /* 1095 * DP Video path from host to device 4 where first and last link 1096 * is bonded. 1097 * 1098 * [Host] 1099 * 1 | 1100 * 1 | 1101 * [Device #1] 1102 * 7 :| 8 1103 * 1 :| 2 1104 * [Device #2] 1105 * 5 :| 6 1106 * 1 :| 2 1107 * [Device #3] 1108 * 3 | 1109 * 1 | 1110 * [Device #4] 1111 */ 1112 static const struct hop_expectation test_data[] = { 1113 { 1114 .route = 0x0, 1115 .in_port = 5, 1116 .in_type = TB_TYPE_DP_HDMI_IN, 1117 .out_port = 1, 1118 .out_type = TB_TYPE_PORT, 1119 }, 1120 { 1121 .route = 0x1, 1122 .in_port = 1, 1123 .in_type = TB_TYPE_PORT, 1124 .out_port = 8, 1125 .out_type = TB_TYPE_PORT, 1126 }, 1127 { 1128 .route = 0x701, 1129 .in_port = 2, 1130 .in_type = TB_TYPE_PORT, 1131 .out_port = 6, 1132 .out_type = TB_TYPE_PORT, 1133 }, 1134 { 1135 .route = 0x50701, 1136 .in_port = 2, 1137 .in_type = TB_TYPE_PORT, 1138 .out_port = 3, 1139 .out_type = TB_TYPE_PORT, 1140 }, 1141 { 1142 .route = 0x3050701, 1143 .in_port = 1, 1144 .in_type = TB_TYPE_PORT, 1145 .out_port = 13, 1146 .out_type = TB_TYPE_DP_HDMI_OUT, 1147 }, 1148 }; 1149 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4; 1150 struct tb_port *in, *out; 1151 struct tb_path *path; 1152 int i; 1153 1154 host = alloc_host(test); 1155 dev1 = alloc_dev_default(test, host, 0x1, true); 1156 dev2 = alloc_dev_default(test, dev1, 0x701, false); 1157 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 1158 dev4 = alloc_dev_default(test, dev3, 0x3050701, true); 1159 1160 in = &host->ports[5]; 1161 out = &dev4->ports[13]; 1162 1163 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1164 KUNIT_ASSERT_TRUE(test, path != NULL); 1165 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 1166 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1167 const struct tb_port *in_port, *out_port; 1168 1169 in_port = path->hops[i].in_port; 1170 out_port = path->hops[i].out_port; 1171 1172 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1173 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1174 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1175 test_data[i].in_type); 1176 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1177 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1178 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1179 test_data[i].out_type); 1180 } 1181 tb_path_free(path); 1182 } 1183 1184 static void tb_test_path_mixed_chain_reverse(struct kunit *test) 1185 { 1186 /* 1187 * DP Video path from device 4 to host where first and last link 1188 * is bonded. 1189 * 1190 * [Host] 1191 * 1 | 1192 * 1 | 1193 * [Device #1] 1194 * 7 :| 8 1195 * 1 :| 2 1196 * [Device #2] 1197 * 5 :| 6 1198 * 1 :| 2 1199 * [Device #3] 1200 * 3 | 1201 * 1 | 1202 * [Device #4] 1203 */ 1204 static const struct hop_expectation test_data[] = { 1205 { 1206 .route = 0x3050701, 1207 .in_port = 13, 1208 .in_type = TB_TYPE_DP_HDMI_OUT, 1209 .out_port = 1, 1210 .out_type = TB_TYPE_PORT, 1211 }, 1212 { 1213 .route = 0x50701, 1214 .in_port = 3, 1215 .in_type = TB_TYPE_PORT, 1216 .out_port = 2, 1217 .out_type = TB_TYPE_PORT, 1218 }, 1219 { 1220 .route = 0x701, 1221 .in_port = 6, 1222 .in_type = TB_TYPE_PORT, 1223 .out_port = 2, 1224 .out_type = TB_TYPE_PORT, 1225 }, 1226 { 1227 .route = 0x1, 1228 .in_port = 8, 1229 .in_type = TB_TYPE_PORT, 1230 .out_port = 1, 1231 .out_type = TB_TYPE_PORT, 1232 }, 1233 { 1234 .route = 0x0, 1235 .in_port = 1, 1236 .in_type = TB_TYPE_PORT, 1237 .out_port = 5, 1238 .out_type = TB_TYPE_DP_HDMI_IN, 1239 }, 1240 }; 1241 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4; 1242 struct tb_port *in, *out; 1243 struct tb_path *path; 1244 int i; 1245 1246 host = alloc_host(test); 1247 dev1 = alloc_dev_default(test, host, 0x1, true); 1248 dev2 = alloc_dev_default(test, dev1, 0x701, false); 1249 dev3 = alloc_dev_default(test, dev2, 0x50701, false); 1250 dev4 = alloc_dev_default(test, dev3, 0x3050701, true); 1251 1252 in = &dev4->ports[13]; 1253 out = &host->ports[5]; 1254 1255 path = tb_path_alloc(NULL, in, 9, out, 9, 1, "Video"); 1256 KUNIT_ASSERT_TRUE(test, path != NULL); 1257 KUNIT_ASSERT_EQ(test, path->path_length, ARRAY_SIZE(test_data)); 1258 for (i = 0; i < ARRAY_SIZE(test_data); i++) { 1259 const struct tb_port *in_port, *out_port; 1260 1261 in_port = path->hops[i].in_port; 1262 out_port = path->hops[i].out_port; 1263 1264 KUNIT_EXPECT_EQ(test, tb_route(in_port->sw), test_data[i].route); 1265 KUNIT_EXPECT_EQ(test, in_port->port, test_data[i].in_port); 1266 KUNIT_EXPECT_EQ(test, (enum tb_port_type)in_port->config.type, 1267 test_data[i].in_type); 1268 KUNIT_EXPECT_EQ(test, tb_route(out_port->sw), test_data[i].route); 1269 KUNIT_EXPECT_EQ(test, out_port->port, test_data[i].out_port); 1270 KUNIT_EXPECT_EQ(test, (enum tb_port_type)out_port->config.type, 1271 test_data[i].out_type); 1272 } 1273 tb_path_free(path); 1274 } 1275 1276 static void tb_test_tunnel_pcie(struct kunit *test) 1277 { 1278 struct tb_switch *host, *dev1, *dev2; 1279 struct tb_tunnel *tunnel1, *tunnel2; 1280 struct tb_port *down, *up; 1281 1282 /* 1283 * Create PCIe tunnel between host and two devices. 1284 * 1285 * [Host] 1286 * 1 | 1287 * 1 | 1288 * [Device #1] 1289 * 5 | 1290 * 1 | 1291 * [Device #2] 1292 */ 1293 host = alloc_host(test); 1294 dev1 = alloc_dev_default(test, host, 0x1, true); 1295 dev2 = alloc_dev_default(test, dev1, 0x501, true); 1296 1297 down = &host->ports[8]; 1298 up = &dev1->ports[9]; 1299 tunnel1 = tb_tunnel_alloc_pci(NULL, up, down); 1300 KUNIT_ASSERT_TRUE(test, tunnel1 != NULL); 1301 KUNIT_EXPECT_EQ(test, tunnel1->type, TB_TUNNEL_PCI); 1302 KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down); 1303 KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up); 1304 KUNIT_ASSERT_EQ(test, tunnel1->npaths, 2); 1305 KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2); 1306 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down); 1307 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up); 1308 KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2); 1309 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up); 1310 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down); 1311 1312 down = &dev1->ports[10]; 1313 up = &dev2->ports[9]; 1314 tunnel2 = tb_tunnel_alloc_pci(NULL, up, down); 1315 KUNIT_ASSERT_TRUE(test, tunnel2 != NULL); 1316 KUNIT_EXPECT_EQ(test, tunnel2->type, TB_TUNNEL_PCI); 1317 KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down); 1318 KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up); 1319 KUNIT_ASSERT_EQ(test, tunnel2->npaths, 2); 1320 KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2); 1321 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down); 1322 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up); 1323 KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2); 1324 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up); 1325 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down); 1326 1327 tb_tunnel_free(tunnel2); 1328 tb_tunnel_free(tunnel1); 1329 } 1330 1331 static void tb_test_tunnel_dp(struct kunit *test) 1332 { 1333 struct tb_switch *host, *dev; 1334 struct tb_port *in, *out; 1335 struct tb_tunnel *tunnel; 1336 1337 /* 1338 * Create DP tunnel between Host and Device 1339 * 1340 * [Host] 1341 * 1 | 1342 * 1 | 1343 * [Device] 1344 */ 1345 host = alloc_host(test); 1346 dev = alloc_dev_default(test, host, 0x3, true); 1347 1348 in = &host->ports[5]; 1349 out = &dev->ports[13]; 1350 1351 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1352 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1353 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP); 1354 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1355 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1356 KUNIT_ASSERT_EQ(test, tunnel->npaths, 3); 1357 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 2); 1358 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1359 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].out_port, out); 1360 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 2); 1361 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1362 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].out_port, out); 1363 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 2); 1364 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1365 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[1].out_port, in); 1366 tb_tunnel_free(tunnel); 1367 } 1368 1369 static void tb_test_tunnel_dp_chain(struct kunit *test) 1370 { 1371 struct tb_switch *host, *dev1, *dev4; 1372 struct tb_port *in, *out; 1373 struct tb_tunnel *tunnel; 1374 1375 /* 1376 * Create DP tunnel from Host DP IN to Device #4 DP OUT. 1377 * 1378 * [Host] 1379 * 1 | 1380 * 1 | 1381 * [Device #1] 1382 * 3 / | 5 \ 7 1383 * 1 / | \ 1 1384 * [Device #2] | [Device #4] 1385 * | 1 1386 * [Device #3] 1387 */ 1388 host = alloc_host(test); 1389 dev1 = alloc_dev_default(test, host, 0x1, true); 1390 alloc_dev_default(test, dev1, 0x301, true); 1391 alloc_dev_default(test, dev1, 0x501, true); 1392 dev4 = alloc_dev_default(test, dev1, 0x701, true); 1393 1394 in = &host->ports[5]; 1395 out = &dev4->ports[14]; 1396 1397 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1398 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1399 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP); 1400 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1401 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1402 KUNIT_ASSERT_EQ(test, tunnel->npaths, 3); 1403 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 3); 1404 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1405 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].out_port, out); 1406 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 3); 1407 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1408 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].out_port, out); 1409 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 3); 1410 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1411 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[2].out_port, in); 1412 tb_tunnel_free(tunnel); 1413 } 1414 1415 static void tb_test_tunnel_dp_tree(struct kunit *test) 1416 { 1417 struct tb_switch *host, *dev1, *dev2, *dev3, *dev5; 1418 struct tb_port *in, *out; 1419 struct tb_tunnel *tunnel; 1420 1421 /* 1422 * Create DP tunnel from Device #2 DP IN to Device #5 DP OUT. 1423 * 1424 * [Host] 1425 * 3 | 1426 * 1 | 1427 * [Device #1] 1428 * 3 / | 5 \ 7 1429 * 1 / | \ 1 1430 * [Device #2] | [Device #4] 1431 * | 1 1432 * [Device #3] 1433 * | 5 1434 * | 1 1435 * [Device #5] 1436 */ 1437 host = alloc_host(test); 1438 dev1 = alloc_dev_default(test, host, 0x3, true); 1439 dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true); 1440 dev3 = alloc_dev_default(test, dev1, 0x503, true); 1441 alloc_dev_default(test, dev1, 0x703, true); 1442 dev5 = alloc_dev_default(test, dev3, 0x50503, true); 1443 1444 in = &dev2->ports[13]; 1445 out = &dev5->ports[13]; 1446 1447 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1448 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1449 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP); 1450 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1451 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1452 KUNIT_ASSERT_EQ(test, tunnel->npaths, 3); 1453 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 4); 1454 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1455 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[3].out_port, out); 1456 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 4); 1457 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1458 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[3].out_port, out); 1459 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 4); 1460 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1461 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[3].out_port, in); 1462 tb_tunnel_free(tunnel); 1463 } 1464 1465 static void tb_test_tunnel_dp_max_length(struct kunit *test) 1466 { 1467 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5, *dev6; 1468 struct tb_switch *dev7, *dev8, *dev9, *dev10, *dev11, *dev12; 1469 struct tb_port *in, *out; 1470 struct tb_tunnel *tunnel; 1471 1472 /* 1473 * Creates DP tunnel from Device #6 to Device #12. 1474 * 1475 * [Host] 1476 * 1 / \ 3 1477 * 1 / \ 1 1478 * [Device #1] [Device #7] 1479 * 3 | | 3 1480 * 1 | | 1 1481 * [Device #2] [Device #8] 1482 * 3 | | 3 1483 * 1 | | 1 1484 * [Device #3] [Device #9] 1485 * 3 | | 3 1486 * 1 | | 1 1487 * [Device #4] [Device #10] 1488 * 3 | | 3 1489 * 1 | | 1 1490 * [Device #5] [Device #11] 1491 * 3 | | 3 1492 * 1 | | 1 1493 * [Device #6] [Device #12] 1494 */ 1495 host = alloc_host(test); 1496 dev1 = alloc_dev_default(test, host, 0x1, true); 1497 dev2 = alloc_dev_default(test, dev1, 0x301, true); 1498 dev3 = alloc_dev_default(test, dev2, 0x30301, true); 1499 dev4 = alloc_dev_default(test, dev3, 0x3030301, true); 1500 dev5 = alloc_dev_default(test, dev4, 0x303030301, true); 1501 dev6 = alloc_dev_with_dpin(test, dev5, 0x30303030301, true); 1502 dev7 = alloc_dev_default(test, host, 0x3, true); 1503 dev8 = alloc_dev_default(test, dev7, 0x303, true); 1504 dev9 = alloc_dev_default(test, dev8, 0x30303, true); 1505 dev10 = alloc_dev_default(test, dev9, 0x3030303, true); 1506 dev11 = alloc_dev_default(test, dev10, 0x303030303, true); 1507 dev12 = alloc_dev_default(test, dev11, 0x30303030303, true); 1508 1509 in = &dev6->ports[13]; 1510 out = &dev12->ports[13]; 1511 1512 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1513 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1514 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DP); 1515 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, in); 1516 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, out); 1517 KUNIT_ASSERT_EQ(test, tunnel->npaths, 3); 1518 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 13); 1519 /* First hop */ 1520 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, in); 1521 /* Middle */ 1522 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].in_port, 1523 &host->ports[1]); 1524 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[6].out_port, 1525 &host->ports[3]); 1526 /* Last */ 1527 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[12].out_port, out); 1528 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 13); 1529 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, in); 1530 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].in_port, 1531 &host->ports[1]); 1532 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[6].out_port, 1533 &host->ports[3]); 1534 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[12].out_port, out); 1535 KUNIT_ASSERT_EQ(test, tunnel->paths[2]->path_length, 13); 1536 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[0].in_port, out); 1537 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].in_port, 1538 &host->ports[3]); 1539 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[6].out_port, 1540 &host->ports[1]); 1541 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[2]->hops[12].out_port, in); 1542 tb_tunnel_free(tunnel); 1543 } 1544 1545 static void tb_test_tunnel_usb3(struct kunit *test) 1546 { 1547 struct tb_switch *host, *dev1, *dev2; 1548 struct tb_tunnel *tunnel1, *tunnel2; 1549 struct tb_port *down, *up; 1550 1551 /* 1552 * Create USB3 tunnel between host and two devices. 1553 * 1554 * [Host] 1555 * 1 | 1556 * 1 | 1557 * [Device #1] 1558 * \ 7 1559 * \ 1 1560 * [Device #2] 1561 */ 1562 host = alloc_host(test); 1563 dev1 = alloc_dev_default(test, host, 0x1, true); 1564 dev2 = alloc_dev_default(test, dev1, 0x701, true); 1565 1566 down = &host->ports[12]; 1567 up = &dev1->ports[16]; 1568 tunnel1 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 1569 KUNIT_ASSERT_TRUE(test, tunnel1 != NULL); 1570 KUNIT_EXPECT_EQ(test, tunnel1->type, TB_TUNNEL_USB3); 1571 KUNIT_EXPECT_PTR_EQ(test, tunnel1->src_port, down); 1572 KUNIT_EXPECT_PTR_EQ(test, tunnel1->dst_port, up); 1573 KUNIT_ASSERT_EQ(test, tunnel1->npaths, 2); 1574 KUNIT_ASSERT_EQ(test, tunnel1->paths[0]->path_length, 2); 1575 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[0].in_port, down); 1576 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[0]->hops[1].out_port, up); 1577 KUNIT_ASSERT_EQ(test, tunnel1->paths[1]->path_length, 2); 1578 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[0].in_port, up); 1579 KUNIT_EXPECT_PTR_EQ(test, tunnel1->paths[1]->hops[1].out_port, down); 1580 1581 down = &dev1->ports[17]; 1582 up = &dev2->ports[16]; 1583 tunnel2 = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 1584 KUNIT_ASSERT_TRUE(test, tunnel2 != NULL); 1585 KUNIT_EXPECT_EQ(test, tunnel2->type, TB_TUNNEL_USB3); 1586 KUNIT_EXPECT_PTR_EQ(test, tunnel2->src_port, down); 1587 KUNIT_EXPECT_PTR_EQ(test, tunnel2->dst_port, up); 1588 KUNIT_ASSERT_EQ(test, tunnel2->npaths, 2); 1589 KUNIT_ASSERT_EQ(test, tunnel2->paths[0]->path_length, 2); 1590 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[0].in_port, down); 1591 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[0]->hops[1].out_port, up); 1592 KUNIT_ASSERT_EQ(test, tunnel2->paths[1]->path_length, 2); 1593 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[0].in_port, up); 1594 KUNIT_EXPECT_PTR_EQ(test, tunnel2->paths[1]->hops[1].out_port, down); 1595 1596 tb_tunnel_free(tunnel2); 1597 tb_tunnel_free(tunnel1); 1598 } 1599 1600 static void tb_test_tunnel_port_on_path(struct kunit *test) 1601 { 1602 struct tb_switch *host, *dev1, *dev2, *dev3, *dev4, *dev5; 1603 struct tb_port *in, *out, *port; 1604 struct tb_tunnel *dp_tunnel; 1605 1606 /* 1607 * [Host] 1608 * 3 | 1609 * 1 | 1610 * [Device #1] 1611 * 3 / | 5 \ 7 1612 * 1 / | \ 1 1613 * [Device #2] | [Device #4] 1614 * | 1 1615 * [Device #3] 1616 * | 5 1617 * | 1 1618 * [Device #5] 1619 */ 1620 host = alloc_host(test); 1621 dev1 = alloc_dev_default(test, host, 0x3, true); 1622 dev2 = alloc_dev_with_dpin(test, dev1, 0x303, true); 1623 dev3 = alloc_dev_default(test, dev1, 0x503, true); 1624 dev4 = alloc_dev_default(test, dev1, 0x703, true); 1625 dev5 = alloc_dev_default(test, dev3, 0x50503, true); 1626 1627 in = &dev2->ports[13]; 1628 out = &dev5->ports[13]; 1629 1630 dp_tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 1631 KUNIT_ASSERT_TRUE(test, dp_tunnel != NULL); 1632 1633 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, in)); 1634 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, out)); 1635 1636 port = &host->ports[8]; 1637 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1638 1639 port = &host->ports[3]; 1640 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1641 1642 port = &dev1->ports[1]; 1643 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1644 1645 port = &dev1->ports[3]; 1646 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1647 1648 port = &dev1->ports[5]; 1649 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1650 1651 port = &dev1->ports[7]; 1652 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1653 1654 port = &dev3->ports[1]; 1655 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1656 1657 port = &dev5->ports[1]; 1658 KUNIT_EXPECT_TRUE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1659 1660 port = &dev4->ports[1]; 1661 KUNIT_EXPECT_FALSE(test, tb_tunnel_port_on_path(dp_tunnel, port)); 1662 1663 tb_tunnel_free(dp_tunnel); 1664 } 1665 1666 static void tb_test_tunnel_dma(struct kunit *test) 1667 { 1668 struct tb_port *nhi, *port; 1669 struct tb_tunnel *tunnel; 1670 struct tb_switch *host; 1671 1672 /* 1673 * Create DMA tunnel from NHI to port 1 and back. 1674 * 1675 * [Host 1] 1676 * 1 ^ In HopID 1 -> Out HopID 8 1677 * | 1678 * v In HopID 8 -> Out HopID 1 1679 * ............ Domain border 1680 * | 1681 * [Host 2] 1682 */ 1683 host = alloc_host(test); 1684 nhi = &host->ports[7]; 1685 port = &host->ports[1]; 1686 1687 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1); 1688 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1689 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DMA); 1690 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi); 1691 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port); 1692 KUNIT_ASSERT_EQ(test, tunnel->npaths, 2); 1693 /* RX path */ 1694 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1); 1695 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port); 1696 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 8); 1697 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, nhi); 1698 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 1); 1699 /* TX path */ 1700 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 1); 1701 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, nhi); 1702 KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].in_hop_index, 1); 1703 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].out_port, port); 1704 KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].next_hop_index, 8); 1705 1706 tb_tunnel_free(tunnel); 1707 } 1708 1709 static void tb_test_tunnel_dma_rx(struct kunit *test) 1710 { 1711 struct tb_port *nhi, *port; 1712 struct tb_tunnel *tunnel; 1713 struct tb_switch *host; 1714 1715 /* 1716 * Create DMA RX tunnel from port 1 to NHI. 1717 * 1718 * [Host 1] 1719 * 1 ^ 1720 * | 1721 * | In HopID 15 -> Out HopID 2 1722 * ............ Domain border 1723 * | 1724 * [Host 2] 1725 */ 1726 host = alloc_host(test); 1727 nhi = &host->ports[7]; 1728 port = &host->ports[1]; 1729 1730 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 2); 1731 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1732 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DMA); 1733 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi); 1734 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port); 1735 KUNIT_ASSERT_EQ(test, tunnel->npaths, 1); 1736 /* RX path */ 1737 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1); 1738 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port); 1739 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 15); 1740 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, nhi); 1741 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 2); 1742 1743 tb_tunnel_free(tunnel); 1744 } 1745 1746 static void tb_test_tunnel_dma_tx(struct kunit *test) 1747 { 1748 struct tb_port *nhi, *port; 1749 struct tb_tunnel *tunnel; 1750 struct tb_switch *host; 1751 1752 /* 1753 * Create DMA TX tunnel from NHI to port 1. 1754 * 1755 * [Host 1] 1756 * 1 | In HopID 2 -> Out HopID 15 1757 * | 1758 * v 1759 * ............ Domain border 1760 * | 1761 * [Host 2] 1762 */ 1763 host = alloc_host(test); 1764 nhi = &host->ports[7]; 1765 port = &host->ports[1]; 1766 1767 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 2, -1, -1); 1768 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1769 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DMA); 1770 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi); 1771 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port); 1772 KUNIT_ASSERT_EQ(test, tunnel->npaths, 1); 1773 /* TX path */ 1774 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 1); 1775 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, nhi); 1776 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 2); 1777 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, port); 1778 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].next_hop_index, 15); 1779 1780 tb_tunnel_free(tunnel); 1781 } 1782 1783 static void tb_test_tunnel_dma_chain(struct kunit *test) 1784 { 1785 struct tb_switch *host, *dev1, *dev2; 1786 struct tb_port *nhi, *port; 1787 struct tb_tunnel *tunnel; 1788 1789 /* 1790 * Create DMA tunnel from NHI to Device #2 port 3 and back. 1791 * 1792 * [Host 1] 1793 * 1 ^ In HopID 1 -> Out HopID x 1794 * | 1795 * 1 | In HopID x -> Out HopID 1 1796 * [Device #1] 1797 * 7 \ 1798 * 1 \ 1799 * [Device #2] 1800 * 3 | In HopID x -> Out HopID 8 1801 * | 1802 * v In HopID 8 -> Out HopID x 1803 * ............ Domain border 1804 * | 1805 * [Host 2] 1806 */ 1807 host = alloc_host(test); 1808 dev1 = alloc_dev_default(test, host, 0x1, true); 1809 dev2 = alloc_dev_default(test, dev1, 0x701, true); 1810 1811 nhi = &host->ports[7]; 1812 port = &dev2->ports[3]; 1813 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1); 1814 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1815 KUNIT_EXPECT_EQ(test, tunnel->type, TB_TUNNEL_DMA); 1816 KUNIT_EXPECT_PTR_EQ(test, tunnel->src_port, nhi); 1817 KUNIT_EXPECT_PTR_EQ(test, tunnel->dst_port, port); 1818 KUNIT_ASSERT_EQ(test, tunnel->npaths, 2); 1819 /* RX path */ 1820 KUNIT_ASSERT_EQ(test, tunnel->paths[0]->path_length, 3); 1821 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].in_port, port); 1822 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[0].in_hop_index, 8); 1823 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[0].out_port, 1824 &dev2->ports[1]); 1825 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].in_port, 1826 &dev1->ports[7]); 1827 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[1].out_port, 1828 &dev1->ports[1]); 1829 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].in_port, 1830 &host->ports[1]); 1831 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[0]->hops[2].out_port, nhi); 1832 KUNIT_EXPECT_EQ(test, tunnel->paths[0]->hops[2].next_hop_index, 1); 1833 /* TX path */ 1834 KUNIT_ASSERT_EQ(test, tunnel->paths[1]->path_length, 3); 1835 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[0].in_port, nhi); 1836 KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[0].in_hop_index, 1); 1837 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].in_port, 1838 &dev1->ports[1]); 1839 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[1].out_port, 1840 &dev1->ports[7]); 1841 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].in_port, 1842 &dev2->ports[1]); 1843 KUNIT_EXPECT_PTR_EQ(test, tunnel->paths[1]->hops[2].out_port, port); 1844 KUNIT_EXPECT_EQ(test, tunnel->paths[1]->hops[2].next_hop_index, 8); 1845 1846 tb_tunnel_free(tunnel); 1847 } 1848 1849 static void tb_test_tunnel_dma_match(struct kunit *test) 1850 { 1851 struct tb_port *nhi, *port; 1852 struct tb_tunnel *tunnel; 1853 struct tb_switch *host; 1854 1855 host = alloc_host(test); 1856 nhi = &host->ports[7]; 1857 port = &host->ports[1]; 1858 1859 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, 15, 1); 1860 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1861 1862 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, 15, 1)); 1863 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 8, 1, 15, 1)); 1864 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1)); 1865 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, -1, -1)); 1866 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, -1, -1, -1)); 1867 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, 1, -1, -1)); 1868 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, -1)); 1869 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, 1)); 1870 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1)); 1871 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 8, -1, 8, -1)); 1872 1873 tb_tunnel_free(tunnel); 1874 1875 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 15, 1, -1, -1); 1876 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1877 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, 1, -1, -1)); 1878 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, 15, -1, -1, -1)); 1879 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, 1, -1, -1)); 1880 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1)); 1881 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 1, 15, 1)); 1882 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1)); 1883 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 11, -1, -1)); 1884 1885 tb_tunnel_free(tunnel); 1886 1887 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, -1, -1, 15, 11); 1888 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1889 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 11)); 1890 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, -1)); 1891 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, 11)); 1892 KUNIT_ASSERT_TRUE(test, tb_tunnel_match_dma(tunnel, -1, -1, -1, -1)); 1893 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 15, 1)); 1894 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, -1, -1, 10, 11)); 1895 KUNIT_ASSERT_FALSE(test, tb_tunnel_match_dma(tunnel, 15, 11, -1, -1)); 1896 1897 tb_tunnel_free(tunnel); 1898 } 1899 1900 static void tb_test_credit_alloc_legacy_not_bonded(struct kunit *test) 1901 { 1902 struct tb_switch *host, *dev; 1903 struct tb_port *up, *down; 1904 struct tb_tunnel *tunnel; 1905 struct tb_path *path; 1906 1907 host = alloc_host(test); 1908 dev = alloc_dev_default(test, host, 0x1, false); 1909 1910 down = &host->ports[8]; 1911 up = &dev->ports[9]; 1912 tunnel = tb_tunnel_alloc_pci(NULL, up, down); 1913 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1914 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2); 1915 1916 path = tunnel->paths[0]; 1917 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1918 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1919 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1920 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1921 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 16U); 1922 1923 path = tunnel->paths[1]; 1924 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1925 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1926 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1927 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1928 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 16U); 1929 1930 tb_tunnel_free(tunnel); 1931 } 1932 1933 static void tb_test_credit_alloc_legacy_bonded(struct kunit *test) 1934 { 1935 struct tb_switch *host, *dev; 1936 struct tb_port *up, *down; 1937 struct tb_tunnel *tunnel; 1938 struct tb_path *path; 1939 1940 host = alloc_host(test); 1941 dev = alloc_dev_default(test, host, 0x1, true); 1942 1943 down = &host->ports[8]; 1944 up = &dev->ports[9]; 1945 tunnel = tb_tunnel_alloc_pci(NULL, up, down); 1946 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1947 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2); 1948 1949 path = tunnel->paths[0]; 1950 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1951 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1952 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1953 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1954 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 1955 1956 path = tunnel->paths[1]; 1957 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1958 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1959 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1960 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1961 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 1962 1963 tb_tunnel_free(tunnel); 1964 } 1965 1966 static void tb_test_credit_alloc_pcie(struct kunit *test) 1967 { 1968 struct tb_switch *host, *dev; 1969 struct tb_port *up, *down; 1970 struct tb_tunnel *tunnel; 1971 struct tb_path *path; 1972 1973 host = alloc_host_usb4(test); 1974 dev = alloc_dev_usb4(test, host, 0x1, true); 1975 1976 down = &host->ports[8]; 1977 up = &dev->ports[9]; 1978 tunnel = tb_tunnel_alloc_pci(NULL, up, down); 1979 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 1980 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2); 1981 1982 path = tunnel->paths[0]; 1983 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1984 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1985 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1986 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1987 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 1988 1989 path = tunnel->paths[1]; 1990 KUNIT_ASSERT_EQ(test, path->path_length, 2); 1991 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 1992 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 1993 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 1994 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 64U); 1995 1996 tb_tunnel_free(tunnel); 1997 } 1998 1999 static void tb_test_credit_alloc_dp(struct kunit *test) 2000 { 2001 struct tb_switch *host, *dev; 2002 struct tb_port *in, *out; 2003 struct tb_tunnel *tunnel; 2004 struct tb_path *path; 2005 2006 host = alloc_host_usb4(test); 2007 dev = alloc_dev_usb4(test, host, 0x1, true); 2008 2009 in = &host->ports[5]; 2010 out = &dev->ports[14]; 2011 2012 tunnel = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 2013 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 2014 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)3); 2015 2016 /* Video (main) path */ 2017 path = tunnel->paths[0]; 2018 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2019 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U); 2020 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2021 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U); 2022 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U); 2023 2024 /* AUX TX */ 2025 path = tunnel->paths[1]; 2026 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2027 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2028 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2029 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2030 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2031 2032 /* AUX RX */ 2033 path = tunnel->paths[2]; 2034 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2035 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2036 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2037 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2038 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2039 2040 tb_tunnel_free(tunnel); 2041 } 2042 2043 static void tb_test_credit_alloc_usb3(struct kunit *test) 2044 { 2045 struct tb_switch *host, *dev; 2046 struct tb_port *up, *down; 2047 struct tb_tunnel *tunnel; 2048 struct tb_path *path; 2049 2050 host = alloc_host_usb4(test); 2051 dev = alloc_dev_usb4(test, host, 0x1, true); 2052 2053 down = &host->ports[12]; 2054 up = &dev->ports[16]; 2055 tunnel = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 2056 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 2057 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2); 2058 2059 path = tunnel->paths[0]; 2060 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2061 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2062 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2063 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2064 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2065 2066 path = tunnel->paths[1]; 2067 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2068 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2069 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2070 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2071 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 2072 2073 tb_tunnel_free(tunnel); 2074 } 2075 2076 static void tb_test_credit_alloc_dma(struct kunit *test) 2077 { 2078 struct tb_switch *host, *dev; 2079 struct tb_port *nhi, *port; 2080 struct tb_tunnel *tunnel; 2081 struct tb_path *path; 2082 2083 host = alloc_host_usb4(test); 2084 dev = alloc_dev_usb4(test, host, 0x1, true); 2085 2086 nhi = &host->ports[7]; 2087 port = &dev->ports[3]; 2088 2089 tunnel = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1); 2090 KUNIT_ASSERT_TRUE(test, tunnel != NULL); 2091 KUNIT_ASSERT_EQ(test, tunnel->npaths, (size_t)2); 2092 2093 /* DMA RX */ 2094 path = tunnel->paths[0]; 2095 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2096 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2097 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2098 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2099 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2100 2101 /* DMA TX */ 2102 path = tunnel->paths[1]; 2103 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2104 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2105 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2106 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2107 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2108 2109 tb_tunnel_free(tunnel); 2110 } 2111 2112 static void tb_test_credit_alloc_dma_multiple(struct kunit *test) 2113 { 2114 struct tb_tunnel *tunnel1, *tunnel2, *tunnel3; 2115 struct tb_switch *host, *dev; 2116 struct tb_port *nhi, *port; 2117 struct tb_path *path; 2118 2119 host = alloc_host_usb4(test); 2120 dev = alloc_dev_usb4(test, host, 0x1, true); 2121 2122 nhi = &host->ports[7]; 2123 port = &dev->ports[3]; 2124 2125 /* 2126 * Create three DMA tunnels through the same ports. With the 2127 * default buffers we should be able to create two and the last 2128 * one fails. 2129 * 2130 * For default host we have following buffers for DMA: 2131 * 2132 * 120 - (2 + 2 * (1 + 0) + 32 + 64 + spare) = 20 2133 * 2134 * For device we have following: 2135 * 2136 * 120 - (2 + 2 * (1 + 18) + 14 + 32 + spare) = 34 2137 * 2138 * spare = 14 + 1 = 15 2139 * 2140 * So on host the first tunnel gets 14 and the second gets the 2141 * remaining 1 and then we run out of buffers. 2142 */ 2143 tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1); 2144 KUNIT_ASSERT_TRUE(test, tunnel1 != NULL); 2145 KUNIT_ASSERT_EQ(test, tunnel1->npaths, (size_t)2); 2146 2147 path = tunnel1->paths[0]; 2148 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2149 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2150 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2151 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2152 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2153 2154 path = tunnel1->paths[1]; 2155 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2156 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2157 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2158 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2159 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2160 2161 tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2); 2162 KUNIT_ASSERT_TRUE(test, tunnel2 != NULL); 2163 KUNIT_ASSERT_EQ(test, tunnel2->npaths, (size_t)2); 2164 2165 path = tunnel2->paths[0]; 2166 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2167 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2168 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2169 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2170 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2171 2172 path = tunnel2->paths[1]; 2173 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2174 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2175 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2176 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2177 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2178 2179 tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3); 2180 KUNIT_ASSERT_TRUE(test, tunnel3 == NULL); 2181 2182 /* 2183 * Release the first DMA tunnel. That should make 14 buffers 2184 * available for the next tunnel. 2185 */ 2186 tb_tunnel_free(tunnel1); 2187 2188 tunnel3 = tb_tunnel_alloc_dma(NULL, nhi, port, 10, 3, 10, 3); 2189 KUNIT_ASSERT_TRUE(test, tunnel3 != NULL); 2190 2191 path = tunnel3->paths[0]; 2192 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2193 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2194 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2195 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2196 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2197 2198 path = tunnel3->paths[1]; 2199 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2200 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2201 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2202 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2203 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2204 2205 tb_tunnel_free(tunnel3); 2206 tb_tunnel_free(tunnel2); 2207 } 2208 2209 static void tb_test_credit_alloc_all(struct kunit *test) 2210 { 2211 struct tb_port *up, *down, *in, *out, *nhi, *port; 2212 struct tb_tunnel *pcie_tunnel, *dp_tunnel1, *dp_tunnel2, *usb3_tunnel; 2213 struct tb_tunnel *dma_tunnel1, *dma_tunnel2; 2214 struct tb_switch *host, *dev; 2215 struct tb_path *path; 2216 2217 /* 2218 * Create PCIe, 2 x DP, USB 3.x and two DMA tunnels from host to 2219 * device. Expectation is that all these can be established with 2220 * the default credit allocation found in Intel hardware. 2221 */ 2222 2223 host = alloc_host_usb4(test); 2224 dev = alloc_dev_usb4(test, host, 0x1, true); 2225 2226 down = &host->ports[8]; 2227 up = &dev->ports[9]; 2228 pcie_tunnel = tb_tunnel_alloc_pci(NULL, up, down); 2229 KUNIT_ASSERT_TRUE(test, pcie_tunnel != NULL); 2230 KUNIT_ASSERT_EQ(test, pcie_tunnel->npaths, (size_t)2); 2231 2232 path = pcie_tunnel->paths[0]; 2233 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2234 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2235 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2236 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2237 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 2238 2239 path = pcie_tunnel->paths[1]; 2240 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2241 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2242 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2243 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2244 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 64U); 2245 2246 in = &host->ports[5]; 2247 out = &dev->ports[13]; 2248 2249 dp_tunnel1 = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 2250 KUNIT_ASSERT_TRUE(test, dp_tunnel1 != NULL); 2251 KUNIT_ASSERT_EQ(test, dp_tunnel1->npaths, (size_t)3); 2252 2253 path = dp_tunnel1->paths[0]; 2254 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2255 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U); 2256 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2257 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U); 2258 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U); 2259 2260 path = dp_tunnel1->paths[1]; 2261 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2262 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2263 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2264 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2265 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2266 2267 path = dp_tunnel1->paths[2]; 2268 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2269 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2270 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2271 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2272 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2273 2274 in = &host->ports[6]; 2275 out = &dev->ports[14]; 2276 2277 dp_tunnel2 = tb_tunnel_alloc_dp(NULL, in, out, 0, 0); 2278 KUNIT_ASSERT_TRUE(test, dp_tunnel2 != NULL); 2279 KUNIT_ASSERT_EQ(test, dp_tunnel2->npaths, (size_t)3); 2280 2281 path = dp_tunnel2->paths[0]; 2282 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2283 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 12U); 2284 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2285 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 18U); 2286 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 0U); 2287 2288 path = dp_tunnel2->paths[1]; 2289 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2290 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2291 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2292 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2293 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2294 2295 path = dp_tunnel2->paths[2]; 2296 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2297 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2298 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 1U); 2299 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2300 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2301 2302 down = &host->ports[12]; 2303 up = &dev->ports[16]; 2304 usb3_tunnel = tb_tunnel_alloc_usb3(NULL, up, down, 0, 0); 2305 KUNIT_ASSERT_TRUE(test, usb3_tunnel != NULL); 2306 KUNIT_ASSERT_EQ(test, usb3_tunnel->npaths, (size_t)2); 2307 2308 path = usb3_tunnel->paths[0]; 2309 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2310 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2311 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2312 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2313 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2314 2315 path = usb3_tunnel->paths[1]; 2316 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2317 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2318 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 7U); 2319 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2320 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 32U); 2321 2322 nhi = &host->ports[7]; 2323 port = &dev->ports[3]; 2324 2325 dma_tunnel1 = tb_tunnel_alloc_dma(NULL, nhi, port, 8, 1, 8, 1); 2326 KUNIT_ASSERT_TRUE(test, dma_tunnel1 != NULL); 2327 KUNIT_ASSERT_EQ(test, dma_tunnel1->npaths, (size_t)2); 2328 2329 path = dma_tunnel1->paths[0]; 2330 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2331 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2332 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2333 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2334 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2335 2336 path = dma_tunnel1->paths[1]; 2337 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2338 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2339 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2340 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2341 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 14U); 2342 2343 dma_tunnel2 = tb_tunnel_alloc_dma(NULL, nhi, port, 9, 2, 9, 2); 2344 KUNIT_ASSERT_TRUE(test, dma_tunnel2 != NULL); 2345 KUNIT_ASSERT_EQ(test, dma_tunnel2->npaths, (size_t)2); 2346 2347 path = dma_tunnel2->paths[0]; 2348 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2349 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2350 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 14U); 2351 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2352 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2353 2354 path = dma_tunnel2->paths[1]; 2355 KUNIT_ASSERT_EQ(test, path->path_length, 2); 2356 KUNIT_EXPECT_EQ(test, path->hops[0].nfc_credits, 0U); 2357 KUNIT_EXPECT_EQ(test, path->hops[0].initial_credits, 0U); 2358 KUNIT_EXPECT_EQ(test, path->hops[1].nfc_credits, 0U); 2359 KUNIT_EXPECT_EQ(test, path->hops[1].initial_credits, 1U); 2360 2361 tb_tunnel_free(dma_tunnel2); 2362 tb_tunnel_free(dma_tunnel1); 2363 tb_tunnel_free(usb3_tunnel); 2364 tb_tunnel_free(dp_tunnel2); 2365 tb_tunnel_free(dp_tunnel1); 2366 tb_tunnel_free(pcie_tunnel); 2367 } 2368 2369 static const u32 root_directory[] = { 2370 0x55584401, /* "UXD" v1 */ 2371 0x00000018, /* Root directory length */ 2372 0x76656e64, /* "vend" */ 2373 0x6f726964, /* "orid" */ 2374 0x76000001, /* "v" R 1 */ 2375 0x00000a27, /* Immediate value, ! Vendor ID */ 2376 0x76656e64, /* "vend" */ 2377 0x6f726964, /* "orid" */ 2378 0x74000003, /* "t" R 3 */ 2379 0x0000001a, /* Text leaf offset, (“Apple Inc.”) */ 2380 0x64657669, /* "devi" */ 2381 0x63656964, /* "ceid" */ 2382 0x76000001, /* "v" R 1 */ 2383 0x0000000a, /* Immediate value, ! Device ID */ 2384 0x64657669, /* "devi" */ 2385 0x63656964, /* "ceid" */ 2386 0x74000003, /* "t" R 3 */ 2387 0x0000001d, /* Text leaf offset, (“Macintosh”) */ 2388 0x64657669, /* "devi" */ 2389 0x63657276, /* "cerv" */ 2390 0x76000001, /* "v" R 1 */ 2391 0x80000100, /* Immediate value, Device Revision */ 2392 0x6e657477, /* "netw" */ 2393 0x6f726b00, /* "ork" */ 2394 0x44000014, /* "D" R 20 */ 2395 0x00000021, /* Directory data offset, (Network Directory) */ 2396 0x4170706c, /* "Appl" */ 2397 0x6520496e, /* "e In" */ 2398 0x632e0000, /* "c." ! */ 2399 0x4d616369, /* "Maci" */ 2400 0x6e746f73, /* "ntos" */ 2401 0x68000000, /* "h" */ 2402 0x00000000, /* padding */ 2403 0xca8961c6, /* Directory UUID, Network Directory */ 2404 0x9541ce1c, /* Directory UUID, Network Directory */ 2405 0x5949b8bd, /* Directory UUID, Network Directory */ 2406 0x4f5a5f2e, /* Directory UUID, Network Directory */ 2407 0x70727463, /* "prtc" */ 2408 0x69640000, /* "id" */ 2409 0x76000001, /* "v" R 1 */ 2410 0x00000001, /* Immediate value, Network Protocol ID */ 2411 0x70727463, /* "prtc" */ 2412 0x76657273, /* "vers" */ 2413 0x76000001, /* "v" R 1 */ 2414 0x00000001, /* Immediate value, Network Protocol Version */ 2415 0x70727463, /* "prtc" */ 2416 0x72657673, /* "revs" */ 2417 0x76000001, /* "v" R 1 */ 2418 0x00000001, /* Immediate value, Network Protocol Revision */ 2419 0x70727463, /* "prtc" */ 2420 0x73746e73, /* "stns" */ 2421 0x76000001, /* "v" R 1 */ 2422 0x00000000, /* Immediate value, Network Protocol Settings */ 2423 }; 2424 2425 static const uuid_t network_dir_uuid = 2426 UUID_INIT(0xc66189ca, 0x1cce, 0x4195, 2427 0xbd, 0xb8, 0x49, 0x59, 0x2e, 0x5f, 0x5a, 0x4f); 2428 2429 static void tb_test_property_parse(struct kunit *test) 2430 { 2431 struct tb_property_dir *dir, *network_dir; 2432 struct tb_property *p; 2433 2434 dir = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory)); 2435 KUNIT_ASSERT_TRUE(test, dir != NULL); 2436 2437 p = tb_property_find(dir, "foo", TB_PROPERTY_TYPE_TEXT); 2438 KUNIT_ASSERT_TRUE(test, !p); 2439 2440 p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_TEXT); 2441 KUNIT_ASSERT_TRUE(test, p != NULL); 2442 KUNIT_EXPECT_STREQ(test, p->value.text, "Apple Inc."); 2443 2444 p = tb_property_find(dir, "vendorid", TB_PROPERTY_TYPE_VALUE); 2445 KUNIT_ASSERT_TRUE(test, p != NULL); 2446 KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa27); 2447 2448 p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_TEXT); 2449 KUNIT_ASSERT_TRUE(test, p != NULL); 2450 KUNIT_EXPECT_STREQ(test, p->value.text, "Macintosh"); 2451 2452 p = tb_property_find(dir, "deviceid", TB_PROPERTY_TYPE_VALUE); 2453 KUNIT_ASSERT_TRUE(test, p != NULL); 2454 KUNIT_EXPECT_EQ(test, p->value.immediate, 0xa); 2455 2456 p = tb_property_find(dir, "missing", TB_PROPERTY_TYPE_DIRECTORY); 2457 KUNIT_ASSERT_TRUE(test, !p); 2458 2459 p = tb_property_find(dir, "network", TB_PROPERTY_TYPE_DIRECTORY); 2460 KUNIT_ASSERT_TRUE(test, p != NULL); 2461 2462 network_dir = p->value.dir; 2463 KUNIT_EXPECT_TRUE(test, uuid_equal(network_dir->uuid, &network_dir_uuid)); 2464 2465 p = tb_property_find(network_dir, "prtcid", TB_PROPERTY_TYPE_VALUE); 2466 KUNIT_ASSERT_TRUE(test, p != NULL); 2467 KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1); 2468 2469 p = tb_property_find(network_dir, "prtcvers", TB_PROPERTY_TYPE_VALUE); 2470 KUNIT_ASSERT_TRUE(test, p != NULL); 2471 KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1); 2472 2473 p = tb_property_find(network_dir, "prtcrevs", TB_PROPERTY_TYPE_VALUE); 2474 KUNIT_ASSERT_TRUE(test, p != NULL); 2475 KUNIT_EXPECT_EQ(test, p->value.immediate, 0x1); 2476 2477 p = tb_property_find(network_dir, "prtcstns", TB_PROPERTY_TYPE_VALUE); 2478 KUNIT_ASSERT_TRUE(test, p != NULL); 2479 KUNIT_EXPECT_EQ(test, p->value.immediate, 0x0); 2480 2481 p = tb_property_find(network_dir, "deviceid", TB_PROPERTY_TYPE_VALUE); 2482 KUNIT_EXPECT_TRUE(test, !p); 2483 p = tb_property_find(network_dir, "deviceid", TB_PROPERTY_TYPE_TEXT); 2484 KUNIT_EXPECT_TRUE(test, !p); 2485 2486 tb_property_free_dir(dir); 2487 } 2488 2489 static void tb_test_property_format(struct kunit *test) 2490 { 2491 struct tb_property_dir *dir; 2492 ssize_t block_len; 2493 u32 *block; 2494 int ret, i; 2495 2496 dir = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory)); 2497 KUNIT_ASSERT_TRUE(test, dir != NULL); 2498 2499 ret = tb_property_format_dir(dir, NULL, 0); 2500 KUNIT_ASSERT_EQ(test, ret, ARRAY_SIZE(root_directory)); 2501 2502 block_len = ret; 2503 2504 block = kunit_kzalloc(test, block_len * sizeof(u32), GFP_KERNEL); 2505 KUNIT_ASSERT_TRUE(test, block != NULL); 2506 2507 ret = tb_property_format_dir(dir, block, block_len); 2508 KUNIT_EXPECT_EQ(test, ret, 0); 2509 2510 for (i = 0; i < ARRAY_SIZE(root_directory); i++) 2511 KUNIT_EXPECT_EQ(test, root_directory[i], block[i]); 2512 2513 tb_property_free_dir(dir); 2514 } 2515 2516 static void compare_dirs(struct kunit *test, struct tb_property_dir *d1, 2517 struct tb_property_dir *d2) 2518 { 2519 struct tb_property *p1, *p2, *tmp; 2520 int n1, n2, i; 2521 2522 if (d1->uuid) { 2523 KUNIT_ASSERT_TRUE(test, d2->uuid != NULL); 2524 KUNIT_ASSERT_TRUE(test, uuid_equal(d1->uuid, d2->uuid)); 2525 } else { 2526 KUNIT_ASSERT_TRUE(test, d2->uuid == NULL); 2527 } 2528 2529 n1 = 0; 2530 tb_property_for_each(d1, tmp) 2531 n1++; 2532 KUNIT_ASSERT_NE(test, n1, 0); 2533 2534 n2 = 0; 2535 tb_property_for_each(d2, tmp) 2536 n2++; 2537 KUNIT_ASSERT_NE(test, n2, 0); 2538 2539 KUNIT_ASSERT_EQ(test, n1, n2); 2540 2541 p1 = NULL; 2542 p2 = NULL; 2543 for (i = 0; i < n1; i++) { 2544 p1 = tb_property_get_next(d1, p1); 2545 KUNIT_ASSERT_TRUE(test, p1 != NULL); 2546 p2 = tb_property_get_next(d2, p2); 2547 KUNIT_ASSERT_TRUE(test, p2 != NULL); 2548 2549 KUNIT_ASSERT_STREQ(test, &p1->key[0], &p2->key[0]); 2550 KUNIT_ASSERT_EQ(test, p1->type, p2->type); 2551 KUNIT_ASSERT_EQ(test, p1->length, p2->length); 2552 2553 switch (p1->type) { 2554 case TB_PROPERTY_TYPE_DIRECTORY: 2555 KUNIT_ASSERT_TRUE(test, p1->value.dir != NULL); 2556 KUNIT_ASSERT_TRUE(test, p2->value.dir != NULL); 2557 compare_dirs(test, p1->value.dir, p2->value.dir); 2558 break; 2559 2560 case TB_PROPERTY_TYPE_DATA: 2561 KUNIT_ASSERT_TRUE(test, p1->value.data != NULL); 2562 KUNIT_ASSERT_TRUE(test, p2->value.data != NULL); 2563 KUNIT_ASSERT_TRUE(test, 2564 !memcmp(p1->value.data, p2->value.data, 2565 p1->length * 4) 2566 ); 2567 break; 2568 2569 case TB_PROPERTY_TYPE_TEXT: 2570 KUNIT_ASSERT_TRUE(test, p1->value.text != NULL); 2571 KUNIT_ASSERT_TRUE(test, p2->value.text != NULL); 2572 KUNIT_ASSERT_STREQ(test, p1->value.text, p2->value.text); 2573 break; 2574 2575 case TB_PROPERTY_TYPE_VALUE: 2576 KUNIT_ASSERT_EQ(test, p1->value.immediate, 2577 p2->value.immediate); 2578 break; 2579 default: 2580 KUNIT_FAIL(test, "unexpected property type"); 2581 break; 2582 } 2583 } 2584 } 2585 2586 static void tb_test_property_copy(struct kunit *test) 2587 { 2588 struct tb_property_dir *src, *dst; 2589 u32 *block; 2590 int ret, i; 2591 2592 src = tb_property_parse_dir(root_directory, ARRAY_SIZE(root_directory)); 2593 KUNIT_ASSERT_TRUE(test, src != NULL); 2594 2595 dst = tb_property_copy_dir(src); 2596 KUNIT_ASSERT_TRUE(test, dst != NULL); 2597 2598 /* Compare the structures */ 2599 compare_dirs(test, src, dst); 2600 2601 /* Compare the resulting property block */ 2602 ret = tb_property_format_dir(dst, NULL, 0); 2603 KUNIT_ASSERT_EQ(test, ret, ARRAY_SIZE(root_directory)); 2604 2605 block = kunit_kzalloc(test, sizeof(root_directory), GFP_KERNEL); 2606 KUNIT_ASSERT_TRUE(test, block != NULL); 2607 2608 ret = tb_property_format_dir(dst, block, ARRAY_SIZE(root_directory)); 2609 KUNIT_EXPECT_TRUE(test, !ret); 2610 2611 for (i = 0; i < ARRAY_SIZE(root_directory); i++) 2612 KUNIT_EXPECT_EQ(test, root_directory[i], block[i]); 2613 2614 tb_property_free_dir(dst); 2615 tb_property_free_dir(src); 2616 } 2617 2618 static struct kunit_case tb_test_cases[] = { 2619 KUNIT_CASE(tb_test_path_basic), 2620 KUNIT_CASE(tb_test_path_not_connected_walk), 2621 KUNIT_CASE(tb_test_path_single_hop_walk), 2622 KUNIT_CASE(tb_test_path_daisy_chain_walk), 2623 KUNIT_CASE(tb_test_path_simple_tree_walk), 2624 KUNIT_CASE(tb_test_path_complex_tree_walk), 2625 KUNIT_CASE(tb_test_path_max_length_walk), 2626 KUNIT_CASE(tb_test_path_not_connected), 2627 KUNIT_CASE(tb_test_path_not_bonded_lane0), 2628 KUNIT_CASE(tb_test_path_not_bonded_lane1), 2629 KUNIT_CASE(tb_test_path_not_bonded_lane1_chain), 2630 KUNIT_CASE(tb_test_path_not_bonded_lane1_chain_reverse), 2631 KUNIT_CASE(tb_test_path_mixed_chain), 2632 KUNIT_CASE(tb_test_path_mixed_chain_reverse), 2633 KUNIT_CASE(tb_test_tunnel_pcie), 2634 KUNIT_CASE(tb_test_tunnel_dp), 2635 KUNIT_CASE(tb_test_tunnel_dp_chain), 2636 KUNIT_CASE(tb_test_tunnel_dp_tree), 2637 KUNIT_CASE(tb_test_tunnel_dp_max_length), 2638 KUNIT_CASE(tb_test_tunnel_port_on_path), 2639 KUNIT_CASE(tb_test_tunnel_usb3), 2640 KUNIT_CASE(tb_test_tunnel_dma), 2641 KUNIT_CASE(tb_test_tunnel_dma_rx), 2642 KUNIT_CASE(tb_test_tunnel_dma_tx), 2643 KUNIT_CASE(tb_test_tunnel_dma_chain), 2644 KUNIT_CASE(tb_test_tunnel_dma_match), 2645 KUNIT_CASE(tb_test_credit_alloc_legacy_not_bonded), 2646 KUNIT_CASE(tb_test_credit_alloc_legacy_bonded), 2647 KUNIT_CASE(tb_test_credit_alloc_pcie), 2648 KUNIT_CASE(tb_test_credit_alloc_dp), 2649 KUNIT_CASE(tb_test_credit_alloc_usb3), 2650 KUNIT_CASE(tb_test_credit_alloc_dma), 2651 KUNIT_CASE(tb_test_credit_alloc_dma_multiple), 2652 KUNIT_CASE(tb_test_credit_alloc_all), 2653 KUNIT_CASE(tb_test_property_parse), 2654 KUNIT_CASE(tb_test_property_format), 2655 KUNIT_CASE(tb_test_property_copy), 2656 { } 2657 }; 2658 2659 static struct kunit_suite tb_test_suite = { 2660 .name = "thunderbolt", 2661 .test_cases = tb_test_cases, 2662 }; 2663 2664 static struct kunit_suite *tb_test_suites[] = { &tb_test_suite, NULL }; 2665 2666 int tb_test_init(void) 2667 { 2668 return __kunit_test_suites_init(tb_test_suites); 2669 } 2670 2671 void tb_test_exit(void) 2672 { 2673 return __kunit_test_suites_exit(tb_test_suites); 2674 } 2675