1 /* SPDX-License-Identifier: BSD-3-Clause
2 *
3 * Copyright 2017-2020 NXP
4 *
5 */
6 /* System headers */
7 #include <stdio.h>
8 #include <inttypes.h>
9 #include <unistd.h>
10 #include <limits.h>
11 #include <sched.h>
12 #include <signal.h>
13 #include <pthread.h>
14 #include <sys/types.h>
15 #include <sys/syscall.h>
16 #include <sys/eventfd.h>
17
18 #include <rte_byteorder.h>
19 #include <rte_common.h>
20 #include <rte_interrupts.h>
21 #include <rte_log.h>
22 #include <rte_debug.h>
23 #include <rte_atomic.h>
24 #include <rte_branch_prediction.h>
25 #include <rte_memory.h>
26 #include <rte_tailq.h>
27 #include <rte_eal.h>
28 #include <rte_alarm.h>
29 #include <rte_ether.h>
30 #include <rte_ethdev_driver.h>
31 #include <rte_malloc.h>
32 #include <rte_ring.h>
33 #include <rte_bus.h>
34 #include <rte_mbuf_pool_ops.h>
35 #include <rte_mbuf_dyn.h>
36
37 #include <dpaa_of.h>
38 #include <rte_dpaa_bus.h>
39 #include <rte_dpaa_logs.h>
40 #include <dpaax_iova_table.h>
41
42 #include <fsl_usd.h>
43 #include <fsl_qman.h>
44 #include <fsl_bman.h>
45 #include <netcfg.h>
46
47 static struct rte_dpaa_bus rte_dpaa_bus;
48 struct netcfg_info *dpaa_netcfg;
49
50 /* define a variable to hold the portal_key, once created.*/
51 static pthread_key_t dpaa_portal_key;
52
53 unsigned int dpaa_svr_family;
54
55 #define FSL_DPAA_BUS_NAME dpaa_bus
56
57 RTE_DEFINE_PER_LCORE(struct dpaa_portal *, dpaa_io);
58
59 #define DPAA_SEQN_DYNFIELD_NAME "dpaa_seqn_dynfield"
60 int dpaa_seqn_dynfield_offset = -1;
61
62 struct fm_eth_port_cfg *
dpaa_get_eth_port_cfg(int dev_id)63 dpaa_get_eth_port_cfg(int dev_id)
64 {
65 return &dpaa_netcfg->port_cfg[dev_id];
66 }
67
68 static int
compare_dpaa_devices(struct rte_dpaa_device * dev1,struct rte_dpaa_device * dev2)69 compare_dpaa_devices(struct rte_dpaa_device *dev1,
70 struct rte_dpaa_device *dev2)
71 {
72 int comp = 0;
73
74 /* Segragating ETH from SEC devices */
75 if (dev1->device_type > dev2->device_type)
76 comp = 1;
77 else if (dev1->device_type < dev2->device_type)
78 comp = -1;
79 else
80 comp = 0;
81
82 if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
83 return comp;
84
85 if (dev1->id.fman_id > dev2->id.fman_id) {
86 comp = 1;
87 } else if (dev1->id.fman_id < dev2->id.fman_id) {
88 comp = -1;
89 } else {
90 /* FMAN ids match, check for mac_id */
91 if (dev1->id.mac_id > dev2->id.mac_id)
92 comp = 1;
93 else if (dev1->id.mac_id < dev2->id.mac_id)
94 comp = -1;
95 else
96 comp = 0;
97 }
98
99 return comp;
100 }
101
102 static inline void
dpaa_add_to_device_list(struct rte_dpaa_device * newdev)103 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
104 {
105 int comp, inserted = 0;
106 struct rte_dpaa_device *dev = NULL;
107 struct rte_dpaa_device *tdev = NULL;
108
109 TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
110 comp = compare_dpaa_devices(newdev, dev);
111 if (comp < 0) {
112 TAILQ_INSERT_BEFORE(dev, newdev, next);
113 inserted = 1;
114 break;
115 }
116 }
117
118 if (!inserted)
119 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
120 }
121
122 /*
123 * Reads the SEC device from DTS
124 * Returns -1 if SEC devices not available, 0 otherwise
125 */
126 static inline int
dpaa_sec_available(void)127 dpaa_sec_available(void)
128 {
129 const struct device_node *caam_node;
130
131 for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
132 return 0;
133 }
134
135 return -1;
136 }
137
138 static void dpaa_clean_device_list(void);
139
140 static struct rte_devargs *
dpaa_devargs_lookup(struct rte_dpaa_device * dev)141 dpaa_devargs_lookup(struct rte_dpaa_device *dev)
142 {
143 struct rte_devargs *devargs;
144 char dev_name[32];
145
146 RTE_EAL_DEVARGS_FOREACH("dpaa_bus", devargs) {
147 devargs->bus->parse(devargs->name, &dev_name);
148 if (strcmp(dev_name, dev->device.name) == 0) {
149 DPAA_BUS_INFO("**Devargs matched %s", dev_name);
150 return devargs;
151 }
152 }
153 return NULL;
154 }
155
156 static int
dpaa_create_device_list(void)157 dpaa_create_device_list(void)
158 {
159 int i;
160 int ret;
161 struct rte_dpaa_device *dev;
162 struct fm_eth_port_cfg *cfg;
163 struct fman_if *fman_intf;
164
165 /* Creating Ethernet Devices */
166 for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
167 dev = calloc(1, sizeof(struct rte_dpaa_device));
168 if (!dev) {
169 DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
170 ret = -ENOMEM;
171 goto cleanup;
172 }
173
174 dev->device.bus = &rte_dpaa_bus.bus;
175
176 cfg = &dpaa_netcfg->port_cfg[i];
177 fman_intf = cfg->fman_if;
178
179 /* Device identifiers */
180 dev->id.fman_id = fman_intf->fman_idx + 1;
181 dev->id.mac_id = fman_intf->mac_idx;
182 dev->device_type = FSL_DPAA_ETH;
183 dev->id.dev_id = i;
184
185 /* Create device name */
186 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
187 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
188 fman_intf->mac_idx);
189 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
190 dev->device.name = dev->name;
191 dev->device.devargs = dpaa_devargs_lookup(dev);
192
193 dpaa_add_to_device_list(dev);
194 }
195
196 rte_dpaa_bus.device_count = i;
197
198 /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
199 * constantly created only if "sec" property is found in the device
200 * tree. Logically there is no limit for number of devices (QI
201 * interfaces) that can be created.
202 */
203
204 if (dpaa_sec_available()) {
205 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
206 return 0;
207 }
208
209 /* Creating SEC Devices */
210 for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
211 dev = calloc(1, sizeof(struct rte_dpaa_device));
212 if (!dev) {
213 DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
214 ret = -1;
215 goto cleanup;
216 }
217
218 dev->device_type = FSL_DPAA_CRYPTO;
219 dev->id.dev_id = rte_dpaa_bus.device_count + i;
220
221 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
222 * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
223 * allocated for dev->name/
224 */
225 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
226 sprintf(dev->name, "dpaa_sec-%d", i+1);
227 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
228 dev->device.name = dev->name;
229 dev->device.devargs = dpaa_devargs_lookup(dev);
230
231 dpaa_add_to_device_list(dev);
232 }
233
234 rte_dpaa_bus.device_count += i;
235
236 return 0;
237
238 cleanup:
239 dpaa_clean_device_list();
240 return ret;
241 }
242
243 static void
dpaa_clean_device_list(void)244 dpaa_clean_device_list(void)
245 {
246 struct rte_dpaa_device *dev = NULL;
247 struct rte_dpaa_device *tdev = NULL;
248
249 TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
250 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
251 free(dev);
252 dev = NULL;
253 }
254 }
255
rte_dpaa_portal_init(void * arg)256 int rte_dpaa_portal_init(void *arg)
257 {
258 static const struct rte_mbuf_dynfield dpaa_seqn_dynfield_desc = {
259 .name = DPAA_SEQN_DYNFIELD_NAME,
260 .size = sizeof(dpaa_seqn_t),
261 .align = __alignof__(dpaa_seqn_t),
262 };
263 unsigned int cpu, lcore = rte_lcore_id();
264 int ret;
265
266 BUS_INIT_FUNC_TRACE();
267
268 if ((size_t)arg == 1 || lcore == LCORE_ID_ANY)
269 lcore = rte_get_main_lcore();
270 else
271 if (lcore >= RTE_MAX_LCORE)
272 return -1;
273
274 cpu = rte_lcore_to_cpu_id(lcore);
275
276 dpaa_seqn_dynfield_offset =
277 rte_mbuf_dynfield_register(&dpaa_seqn_dynfield_desc);
278 if (dpaa_seqn_dynfield_offset < 0) {
279 DPAA_BUS_LOG(ERR, "Failed to register mbuf field for dpaa sequence number\n");
280 return -rte_errno;
281 }
282
283 /* Initialise bman thread portals */
284 ret = bman_thread_init();
285 if (ret) {
286 DPAA_BUS_LOG(ERR, "bman_thread_init failed on core %u"
287 " (lcore=%u) with ret: %d", cpu, lcore, ret);
288 return ret;
289 }
290
291 DPAA_BUS_LOG(DEBUG, "BMAN thread initialized - CPU=%d lcore=%d",
292 cpu, lcore);
293
294 /* Initialise qman thread portals */
295 ret = qman_thread_init();
296 if (ret) {
297 DPAA_BUS_LOG(ERR, "qman_thread_init failed on core %u"
298 " (lcore=%u) with ret: %d", cpu, lcore, ret);
299 bman_thread_finish();
300 return ret;
301 }
302
303 DPAA_BUS_LOG(DEBUG, "QMAN thread initialized - CPU=%d lcore=%d",
304 cpu, lcore);
305
306 DPAA_PER_LCORE_PORTAL = rte_malloc(NULL, sizeof(struct dpaa_portal),
307 RTE_CACHE_LINE_SIZE);
308 if (!DPAA_PER_LCORE_PORTAL) {
309 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
310 bman_thread_finish();
311 qman_thread_finish();
312 return -ENOMEM;
313 }
314
315 DPAA_PER_LCORE_PORTAL->qman_idx = qman_get_portal_index();
316 DPAA_PER_LCORE_PORTAL->bman_idx = bman_get_portal_index();
317 DPAA_PER_LCORE_PORTAL->tid = syscall(SYS_gettid);
318
319 ret = pthread_setspecific(dpaa_portal_key,
320 (void *)DPAA_PER_LCORE_PORTAL);
321 if (ret) {
322 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on core %u"
323 " (lcore=%u) with ret: %d", cpu, lcore, ret);
324 dpaa_portal_finish(NULL);
325
326 return ret;
327 }
328
329 DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
330
331 return 0;
332 }
333
334 int
rte_dpaa_portal_fq_init(void * arg,struct qman_fq * fq)335 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
336 {
337 /* Affine above created portal with channel*/
338 u32 sdqcr;
339 int ret;
340
341 if (unlikely(!DPAA_PER_LCORE_PORTAL)) {
342 ret = rte_dpaa_portal_init(arg);
343 if (ret < 0) {
344 DPAA_BUS_LOG(ERR, "portal initialization failure");
345 return ret;
346 }
347 }
348
349 /* Initialise qman specific portals */
350 ret = fsl_qman_fq_portal_init(fq->qp);
351 if (ret) {
352 DPAA_BUS_LOG(ERR, "Unable to init fq portal");
353 return -1;
354 }
355
356 sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
357 qman_static_dequeue_add(sdqcr, fq->qp);
358
359 return 0;
360 }
361
rte_dpaa_portal_fq_close(struct qman_fq * fq)362 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
363 {
364 return fsl_qman_fq_portal_destroy(fq->qp);
365 }
366
367 void
dpaa_portal_finish(void * arg)368 dpaa_portal_finish(void *arg)
369 {
370 struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
371
372 if (!dpaa_io_portal) {
373 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
374 return;
375 }
376
377 bman_thread_finish();
378 qman_thread_finish();
379
380 pthread_setspecific(dpaa_portal_key, NULL);
381
382 rte_free(dpaa_io_portal);
383 dpaa_io_portal = NULL;
384 DPAA_PER_LCORE_PORTAL = NULL;
385 }
386
387 static int
rte_dpaa_bus_parse(const char * name,void * out_name)388 rte_dpaa_bus_parse(const char *name, void *out_name)
389 {
390 int i, j;
391 int max_fman = 2, max_macs = 16;
392 char *dup_name;
393 char *sep = NULL;
394
395 /* There are two ways of passing device name, with and without
396 * separator. "dpaa_bus:fm1-mac3" with separator, and "fm1-mac3"
397 * without separator. Both need to be handled.
398 * It is also possible that "name=fm1-mac3" is passed along.
399 */
400 DPAA_BUS_DEBUG("Parse device name (%s)", name);
401
402 /* Check for dpaa_bus:fm1-mac3 style */
403 dup_name = strdup(name);
404 sep = strchr(dup_name, ':');
405 if (!sep)
406 /* If not, check for name=fm1-mac3 style */
407 sep = strchr(dup_name, '=');
408
409 if (sep)
410 /* jump over the seprator */
411 sep = (char *) (sep + 1);
412 else
413 sep = dup_name;
414
415 for (i = 0; i < max_fman; i++) {
416 for (j = 0; j < max_macs; j++) {
417 char fm_name[16];
418 snprintf(fm_name, 16, "fm%d-mac%d", i, j);
419 if (strcmp(fm_name, sep) == 0) {
420 if (out_name)
421 strcpy(out_name, sep);
422 free(dup_name);
423 return 0;
424 }
425 }
426 }
427
428 for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
429 char sec_name[16];
430
431 snprintf(sec_name, 16, "dpaa_sec-%d", i+1);
432 if (strcmp(sec_name, sep) == 0) {
433 if (out_name)
434 strcpy(out_name, sep);
435 free(dup_name);
436 return 0;
437 }
438 }
439
440 free(dup_name);
441 return -EINVAL;
442 }
443
444 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
445 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
446
447 static int
rte_dpaa_bus_scan(void)448 rte_dpaa_bus_scan(void)
449 {
450 int ret;
451
452 BUS_INIT_FUNC_TRACE();
453
454 if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
455 (access(DPAA_DEV_PATH2, F_OK) != 0)) {
456 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
457 return 0;
458 }
459
460 if (rte_dpaa_bus.detected)
461 return 0;
462
463 rte_dpaa_bus.detected = 1;
464
465 /* create the key, supplying a function that'll be invoked
466 * when a portal affined thread will be deleted.
467 */
468 ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
469 if (ret) {
470 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
471 dpaa_clean_device_list();
472 return ret;
473 }
474
475 return 0;
476 }
477
478 /* register a dpaa bus based dpaa driver */
479 void
rte_dpaa_driver_register(struct rte_dpaa_driver * driver)480 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
481 {
482 RTE_VERIFY(driver);
483
484 BUS_INIT_FUNC_TRACE();
485
486 TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
487 /* Update Bus references */
488 driver->dpaa_bus = &rte_dpaa_bus;
489 }
490
491 /* un-register a dpaa bus based dpaa driver */
492 void
rte_dpaa_driver_unregister(struct rte_dpaa_driver * driver)493 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
494 {
495 struct rte_dpaa_bus *dpaa_bus;
496
497 BUS_INIT_FUNC_TRACE();
498
499 dpaa_bus = driver->dpaa_bus;
500
501 TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
502 /* Update Bus references */
503 driver->dpaa_bus = NULL;
504 }
505
506 static int
rte_dpaa_device_match(struct rte_dpaa_driver * drv,struct rte_dpaa_device * dev)507 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
508 struct rte_dpaa_device *dev)
509 {
510 if (!drv || !dev) {
511 DPAA_BUS_DEBUG("Invalid drv or dev received.");
512 return -1;
513 }
514
515 if (drv->drv_type == dev->device_type)
516 return 0;
517
518 return -1;
519 }
520
521 static int
rte_dpaa_bus_dev_build(void)522 rte_dpaa_bus_dev_build(void)
523 {
524 int ret;
525
526 /* Load the device-tree driver */
527 ret = of_init();
528 if (ret) {
529 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
530 return -1;
531 }
532
533 /* Get the interface configurations from device-tree */
534 dpaa_netcfg = netcfg_acquire();
535 if (!dpaa_netcfg) {
536 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
537 return -EINVAL;
538 }
539
540 RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
541
542 if (!dpaa_netcfg->num_ethports) {
543 DPAA_BUS_LOG(INFO, "no network interfaces available");
544 /* This is not an error */
545 return 0;
546 }
547
548 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
549 dump_netcfg(dpaa_netcfg);
550 #endif
551
552 DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
553 dpaa_netcfg->num_ethports);
554 ret = dpaa_create_device_list();
555 if (ret) {
556 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
557 return ret;
558 }
559 return 0;
560 }
561
rte_dpaa_setup_intr(struct rte_intr_handle * intr_handle)562 static int rte_dpaa_setup_intr(struct rte_intr_handle *intr_handle)
563 {
564 int fd;
565
566 fd = eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
567 if (fd < 0) {
568 DPAA_BUS_ERR("Cannot set up eventfd, error %i (%s)",
569 errno, strerror(errno));
570 return errno;
571 }
572
573 intr_handle->fd = fd;
574 intr_handle->type = RTE_INTR_HANDLE_EXT;
575
576 return 0;
577 }
578
579 static int
rte_dpaa_bus_probe(void)580 rte_dpaa_bus_probe(void)
581 {
582 int ret = -1;
583 struct rte_dpaa_device *dev;
584 struct rte_dpaa_driver *drv;
585 FILE *svr_file = NULL;
586 unsigned int svr_ver;
587 int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_ALLOWLIST;
588 static int process_once;
589
590 /* If DPAA bus is not present nothing needs to be done */
591 if (!rte_dpaa_bus.detected)
592 return 0;
593
594 /* Device list creation is only done once */
595 if (!process_once) {
596 rte_dpaa_bus_dev_build();
597 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
598 /* One time load of Qman/Bman drivers */
599 ret = qman_global_init();
600 if (ret) {
601 DPAA_BUS_ERR("QMAN initialization failed: %d",
602 ret);
603 return ret;
604 }
605 ret = bman_global_init();
606 if (ret) {
607 DPAA_BUS_ERR("BMAN initialization failed: %d",
608 ret);
609 return ret;
610 }
611 }
612 }
613 process_once = 1;
614
615 /* If no device present on DPAA bus nothing needs to be done */
616 if (TAILQ_EMPTY(&rte_dpaa_bus.device_list))
617 return 0;
618
619 svr_file = fopen(DPAA_SOC_ID_FILE, "r");
620 if (svr_file) {
621 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
622 dpaa_svr_family = svr_ver & SVR_MASK;
623 fclose(svr_file);
624 }
625
626 TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
627 if (dev->device_type == FSL_DPAA_ETH) {
628 ret = rte_dpaa_setup_intr(&dev->intr_handle);
629 if (ret)
630 DPAA_BUS_ERR("Error setting up interrupt.\n");
631 }
632 }
633
634 /* And initialize the PA->VA translation table */
635 dpaax_iova_table_populate();
636
637 /* For each registered driver, and device, call the driver->probe */
638 TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
639 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
640 ret = rte_dpaa_device_match(drv, dev);
641 if (ret)
642 continue;
643
644 if (rte_dev_is_probed(&dev->device))
645 continue;
646
647 if (!drv->probe ||
648 (dev->device.devargs &&
649 dev->device.devargs->policy == RTE_DEV_BLOCKED))
650 continue;
651
652 if (probe_all ||
653 (dev->device.devargs &&
654 dev->device.devargs->policy == RTE_DEV_ALLOWED)) {
655 ret = drv->probe(drv, dev);
656 if (ret) {
657 DPAA_BUS_ERR("unable to probe:%s",
658 dev->name);
659 } else {
660 dev->driver = drv;
661 dev->device.driver = &drv->driver;
662 }
663 }
664 break;
665 }
666 }
667
668 /* Register DPAA mempool ops only if any DPAA device has
669 * been detected.
670 */
671 rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
672
673 return 0;
674 }
675
676 static struct rte_device *
rte_dpaa_find_device(const struct rte_device * start,rte_dev_cmp_t cmp,const void * data)677 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
678 const void *data)
679 {
680 struct rte_dpaa_device *dev;
681 const struct rte_dpaa_device *dstart;
682
683 /* find_device is called with 'data' as an opaque object - just call
684 * cmp with this and each device object on bus.
685 */
686
687 if (start != NULL) {
688 dstart = RTE_DEV_TO_DPAA_CONST(start);
689 dev = TAILQ_NEXT(dstart, next);
690 } else {
691 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
692 }
693
694 while (dev != NULL) {
695 if (cmp(&dev->device, data) == 0) {
696 DPAA_BUS_DEBUG("Found dev=(%s)\n", dev->device.name);
697 return &dev->device;
698 }
699 dev = TAILQ_NEXT(dev, next);
700 }
701
702 DPAA_BUS_DEBUG("Unable to find any device\n");
703 return NULL;
704 }
705
706 /*
707 * Get iommu class of DPAA2 devices on the bus.
708 */
709 static enum rte_iova_mode
rte_dpaa_get_iommu_class(void)710 rte_dpaa_get_iommu_class(void)
711 {
712 if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
713 (access(DPAA_DEV_PATH2, F_OK) != 0)) {
714 return RTE_IOVA_DC;
715 }
716 return RTE_IOVA_PA;
717 }
718
719 static int
dpaa_bus_plug(struct rte_device * dev __rte_unused)720 dpaa_bus_plug(struct rte_device *dev __rte_unused)
721 {
722 /* No operation is performed while plugging the device */
723 return 0;
724 }
725
726 static int
dpaa_bus_unplug(struct rte_device * dev __rte_unused)727 dpaa_bus_unplug(struct rte_device *dev __rte_unused)
728 {
729 /* No operation is performed while unplugging the device */
730 return 0;
731 }
732
733 static void *
dpaa_bus_dev_iterate(const void * start,const char * str,const struct rte_dev_iterator * it __rte_unused)734 dpaa_bus_dev_iterate(const void *start, const char *str,
735 const struct rte_dev_iterator *it __rte_unused)
736 {
737 const struct rte_dpaa_device *dstart;
738 struct rte_dpaa_device *dev;
739 char *dup, *dev_name = NULL;
740
741 if (str == NULL) {
742 DPAA_BUS_DEBUG("No device string");
743 return NULL;
744 }
745
746 /* Expectation is that device would be name=device_name */
747 if (strncmp(str, "name=", 5) != 0) {
748 DPAA_BUS_DEBUG("Invalid device string (%s)\n", str);
749 return NULL;
750 }
751
752 /* Now that name=device_name format is available, split */
753 dup = strdup(str);
754 dev_name = dup + strlen("name=");
755
756 if (start != NULL) {
757 dstart = RTE_DEV_TO_DPAA_CONST(start);
758 dev = TAILQ_NEXT(dstart, next);
759 } else {
760 dev = TAILQ_FIRST(&rte_dpaa_bus.device_list);
761 }
762
763 while (dev != NULL) {
764 if (strcmp(dev->device.name, dev_name) == 0) {
765 free(dup);
766 return &dev->device;
767 }
768 dev = TAILQ_NEXT(dev, next);
769 }
770
771 free(dup);
772 return NULL;
773 }
774
775 static struct rte_dpaa_bus rte_dpaa_bus = {
776 .bus = {
777 .scan = rte_dpaa_bus_scan,
778 .probe = rte_dpaa_bus_probe,
779 .parse = rte_dpaa_bus_parse,
780 .find_device = rte_dpaa_find_device,
781 .get_iommu_class = rte_dpaa_get_iommu_class,
782 .plug = dpaa_bus_plug,
783 .unplug = dpaa_bus_unplug,
784 .dev_iterate = dpaa_bus_dev_iterate,
785 },
786 .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
787 .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
788 .device_count = 0,
789 };
790
791 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
792 RTE_LOG_REGISTER(dpaa_logtype_bus, bus.dpaa, NOTICE);
793