bus/dpaa: delay fman device list to bus probe
[dpdk.git] / drivers / bus / dpaa / dpaa_bus.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  *
3  *   Copyright 2017 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
17 #include <rte_byteorder.h>
18 #include <rte_common.h>
19 #include <rte_interrupts.h>
20 #include <rte_log.h>
21 #include <rte_debug.h>
22 #include <rte_atomic.h>
23 #include <rte_branch_prediction.h>
24 #include <rte_memory.h>
25 #include <rte_tailq.h>
26 #include <rte_eal.h>
27 #include <rte_alarm.h>
28 #include <rte_ether.h>
29 #include <rte_ethdev_driver.h>
30 #include <rte_malloc.h>
31 #include <rte_ring.h>
32 #include <rte_bus.h>
33 #include <rte_mbuf_pool_ops.h>
34
35 #include <rte_dpaa_bus.h>
36 #include <rte_dpaa_logs.h>
37 #include <dpaax_iova_table.h>
38
39 #include <fsl_usd.h>
40 #include <fsl_qman.h>
41 #include <fsl_bman.h>
42 #include <of.h>
43 #include <netcfg.h>
44
45 int dpaa_logtype_bus;
46 int dpaa_logtype_mempool;
47 int dpaa_logtype_pmd;
48 int dpaa_logtype_eventdev;
49
50 static struct rte_dpaa_bus rte_dpaa_bus;
51 struct netcfg_info *dpaa_netcfg;
52
53 /* define a variable to hold the portal_key, once created.*/
54 static pthread_key_t dpaa_portal_key;
55
56 unsigned int dpaa_svr_family;
57
58 #define FSL_DPAA_BUS_NAME       dpaa_bus
59
60 RTE_DEFINE_PER_LCORE(bool, dpaa_io);
61 RTE_DEFINE_PER_LCORE(struct dpaa_portal_dqrr, held_bufs);
62
63 static int
64 compare_dpaa_devices(struct rte_dpaa_device *dev1,
65                      struct rte_dpaa_device *dev2)
66 {
67         int comp = 0;
68
69         /* Segragating ETH from SEC devices */
70         if (dev1->device_type > dev2->device_type)
71                 comp = 1;
72         else if (dev1->device_type < dev2->device_type)
73                 comp = -1;
74         else
75                 comp = 0;
76
77         if ((comp != 0) || (dev1->device_type != FSL_DPAA_ETH))
78                 return comp;
79
80         if (dev1->id.fman_id > dev2->id.fman_id) {
81                 comp = 1;
82         } else if (dev1->id.fman_id < dev2->id.fman_id) {
83                 comp = -1;
84         } else {
85                 /* FMAN ids match, check for mac_id */
86                 if (dev1->id.mac_id > dev2->id.mac_id)
87                         comp = 1;
88                 else if (dev1->id.mac_id < dev2->id.mac_id)
89                         comp = -1;
90                 else
91                         comp = 0;
92         }
93
94         return comp;
95 }
96
97 static inline void
98 dpaa_add_to_device_list(struct rte_dpaa_device *newdev)
99 {
100         int comp, inserted = 0;
101         struct rte_dpaa_device *dev = NULL;
102         struct rte_dpaa_device *tdev = NULL;
103
104         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
105                 comp = compare_dpaa_devices(newdev, dev);
106                 if (comp < 0) {
107                         TAILQ_INSERT_BEFORE(dev, newdev, next);
108                         inserted = 1;
109                         break;
110                 }
111         }
112
113         if (!inserted)
114                 TAILQ_INSERT_TAIL(&rte_dpaa_bus.device_list, newdev, next);
115 }
116
117 /*
118  * Reads the SEC device from DTS
119  * Returns -1 if SEC devices not available, 0 otherwise
120  */
121 static inline int
122 dpaa_sec_available(void)
123 {
124         const struct device_node *caam_node;
125
126         for_each_compatible_node(caam_node, NULL, "fsl,sec-v4.0") {
127                 return 0;
128         }
129
130         return -1;
131 }
132
133 static void dpaa_clean_device_list(void);
134
135 static struct rte_devargs *
136 dpaa_devargs_lookup(struct rte_dpaa_device *dev)
137 {
138         struct rte_devargs *devargs;
139         char dev_name[32];
140
141         RTE_EAL_DEVARGS_FOREACH("dpaa_bus", devargs) {
142                 devargs->bus->parse(devargs->name, &dev_name);
143                 if (strcmp(dev_name, dev->device.name) == 0) {
144                         DPAA_BUS_INFO("**Devargs matched %s", dev_name);
145                         return devargs;
146                 }
147         }
148         return NULL;
149 }
150
151 static int
152 dpaa_create_device_list(void)
153 {
154         int i;
155         int ret;
156         struct rte_dpaa_device *dev;
157         struct fm_eth_port_cfg *cfg;
158         struct fman_if *fman_intf;
159
160         /* Creating Ethernet Devices */
161         for (i = 0; i < dpaa_netcfg->num_ethports; i++) {
162                 dev = calloc(1, sizeof(struct rte_dpaa_device));
163                 if (!dev) {
164                         DPAA_BUS_LOG(ERR, "Failed to allocate ETH devices");
165                         ret = -ENOMEM;
166                         goto cleanup;
167                 }
168
169                 dev->device.bus = &rte_dpaa_bus.bus;
170
171                 cfg = &dpaa_netcfg->port_cfg[i];
172                 fman_intf = cfg->fman_if;
173
174                 /* Device identifiers */
175                 dev->id.fman_id = fman_intf->fman_idx + 1;
176                 dev->id.mac_id = fman_intf->mac_idx;
177                 dev->device_type = FSL_DPAA_ETH;
178                 dev->id.dev_id = i;
179
180                 /* Create device name */
181                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
182                 sprintf(dev->name, "fm%d-mac%d", (fman_intf->fman_idx + 1),
183                         fman_intf->mac_idx);
184                 DPAA_BUS_LOG(INFO, "%s netdev added", dev->name);
185                 dev->device.name = dev->name;
186                 dev->device.devargs = dpaa_devargs_lookup(dev);
187
188                 dpaa_add_to_device_list(dev);
189         }
190
191         rte_dpaa_bus.device_count = i;
192
193         /* Unlike case of ETH, RTE_LIBRTE_DPAA_MAX_CRYPTODEV SEC devices are
194          * constantly created only if "sec" property is found in the device
195          * tree. Logically there is no limit for number of devices (QI
196          * interfaces) that can be created.
197          */
198
199         if (dpaa_sec_available()) {
200                 DPAA_BUS_LOG(INFO, "DPAA SEC devices are not available");
201                 return 0;
202         }
203
204         /* Creating SEC Devices */
205         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
206                 dev = calloc(1, sizeof(struct rte_dpaa_device));
207                 if (!dev) {
208                         DPAA_BUS_LOG(ERR, "Failed to allocate SEC devices");
209                         ret = -1;
210                         goto cleanup;
211                 }
212
213                 dev->device_type = FSL_DPAA_CRYPTO;
214                 dev->id.dev_id = rte_dpaa_bus.device_count + i;
215
216                 /* Even though RTE_CRYPTODEV_NAME_MAX_LEN is valid length of
217                  * crypto PMD, using RTE_ETH_NAME_MAX_LEN as that is the size
218                  * allocated for dev->name/
219                  */
220                 memset(dev->name, 0, RTE_ETH_NAME_MAX_LEN);
221                 sprintf(dev->name, "dpaa-sec%d", i);
222                 DPAA_BUS_LOG(INFO, "%s cryptodev added", dev->name);
223                 dev->device.name = dev->name;
224                 dev->device.devargs = dpaa_devargs_lookup(dev);
225
226                 dpaa_add_to_device_list(dev);
227         }
228
229         rte_dpaa_bus.device_count += i;
230
231         return 0;
232
233 cleanup:
234         dpaa_clean_device_list();
235         return ret;
236 }
237
238 static void
239 dpaa_clean_device_list(void)
240 {
241         struct rte_dpaa_device *dev = NULL;
242         struct rte_dpaa_device *tdev = NULL;
243
244         TAILQ_FOREACH_SAFE(dev, &rte_dpaa_bus.device_list, next, tdev) {
245                 TAILQ_REMOVE(&rte_dpaa_bus.device_list, dev, next);
246                 free(dev);
247                 dev = NULL;
248         }
249 }
250
251 int rte_dpaa_portal_init(void *arg)
252 {
253         pthread_t id;
254         unsigned int cpu, lcore = rte_lcore_id();
255         int ret;
256         struct dpaa_portal *dpaa_io_portal;
257
258         BUS_INIT_FUNC_TRACE();
259
260         if ((size_t)arg == 1 || lcore == LCORE_ID_ANY)
261                 lcore = rte_get_master_lcore();
262         else
263                 if (lcore >= RTE_MAX_LCORE)
264                         return -1;
265
266         cpu = lcore_config[lcore].core_id;
267
268         /* Set CPU affinity for this thread.*/
269         id = pthread_self();
270         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t),
271                         &lcore_config[lcore].cpuset);
272         if (ret) {
273                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on core :%u"
274                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
275                 return ret;
276         }
277
278         /* Initialise bman thread portals */
279         ret = bman_thread_init();
280         if (ret) {
281                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on core %u"
282                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
283                 return ret;
284         }
285
286         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized - CPU=%d lcore=%d",
287                      cpu, lcore);
288
289         /* Initialise qman thread portals */
290         ret = qman_thread_init();
291         if (ret) {
292                 DPAA_BUS_LOG(ERR, "qman_thread_init failed on core %u"
293                             " (lcore=%u) with ret: %d", cpu, lcore, ret);
294                 bman_thread_finish();
295                 return ret;
296         }
297
298         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized - CPU=%d lcore=%d",
299                      cpu, lcore);
300
301         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
302                                     RTE_CACHE_LINE_SIZE);
303         if (!dpaa_io_portal) {
304                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
305                 bman_thread_finish();
306                 qman_thread_finish();
307                 return -ENOMEM;
308         }
309
310         dpaa_io_portal->qman_idx = qman_get_portal_index();
311         dpaa_io_portal->bman_idx = bman_get_portal_index();
312         dpaa_io_portal->tid = syscall(SYS_gettid);
313
314         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
315         if (ret) {
316                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on core %u"
317                              " (lcore=%u) with ret: %d", cpu, lcore, ret);
318                 dpaa_portal_finish(NULL);
319
320                 return ret;
321         }
322
323         RTE_PER_LCORE(dpaa_io) = true;
324
325         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
326
327         return 0;
328 }
329
330 int
331 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
332 {
333         /* Affine above created portal with channel*/
334         u32 sdqcr;
335         struct qman_portal *qp;
336         int ret;
337
338         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
339                 ret = rte_dpaa_portal_init(arg);
340                 if (ret < 0) {
341                         DPAA_BUS_LOG(ERR, "portal initialization failure");
342                         return ret;
343                 }
344         }
345
346         /* Initialise qman specific portals */
347         qp = fsl_qman_portal_create();
348         if (!qp) {
349                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
350                 return -1;
351         }
352         fq->qp = qp;
353         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
354         qman_static_dequeue_add(sdqcr, qp);
355
356         return 0;
357 }
358
359 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
360 {
361         return fsl_qman_portal_destroy(fq->qp);
362 }
363
364 void
365 dpaa_portal_finish(void *arg)
366 {
367         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
368
369         if (!dpaa_io_portal) {
370                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
371                 return;
372         }
373
374         bman_thread_finish();
375         qman_thread_finish();
376
377         pthread_setspecific(dpaa_portal_key, NULL);
378
379         rte_free(dpaa_io_portal);
380         dpaa_io_portal = NULL;
381
382         RTE_PER_LCORE(dpaa_io) = false;
383 }
384
385 static int
386 rte_dpaa_bus_parse(const char *name, void *out_name)
387 {
388         int i, j;
389         int max_fman = 2, max_macs = 16;
390         char *sep = strchr(name, ':');
391
392         if (strncmp(name, RTE_STR(FSL_DPAA_BUS_NAME),
393                 strlen(RTE_STR(FSL_DPAA_BUS_NAME)))) {
394                 return -EINVAL;
395         }
396
397         if (!sep) {
398                 DPAA_BUS_ERR("Incorrect device name observed");
399                 return -EINVAL;
400         }
401
402         sep = (char *) (sep + 1);
403
404         for (i = 0; i < max_fman; i++) {
405                 for (j = 0; j < max_macs; j++) {
406                         char fm_name[16];
407                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
408                         if (strcmp(fm_name, sep) == 0) {
409                                 if (out_name)
410                                         strcpy(out_name, sep);
411                                 return 0;
412                         }
413                 }
414         }
415
416         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
417                 char sec_name[16];
418
419                 snprintf(sec_name, 16, "dpaa-sec%d", i);
420                 if (strcmp(sec_name, sep) == 0) {
421                         if (out_name)
422                                 strcpy(out_name, sep);
423                         return 0;
424                 }
425         }
426
427         return -EINVAL;
428 }
429
430 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
431 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
432
433 static int
434 rte_dpaa_bus_scan(void)
435 {
436         int ret;
437
438         BUS_INIT_FUNC_TRACE();
439
440         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
441             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
442                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
443                 return 0;
444         }
445         /* detected DPAA devices */
446         rte_dpaa_bus.detected = 1;
447
448         /* create the key, supplying a function that'll be invoked
449          * when a portal affined thread will be deleted.
450          */
451         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
452         if (ret) {
453                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
454                 dpaa_clean_device_list();
455                 return ret;
456         }
457
458         return 0;
459 }
460
461 /* register a dpaa bus based dpaa driver */
462 void
463 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
464 {
465         RTE_VERIFY(driver);
466
467         BUS_INIT_FUNC_TRACE();
468
469         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
470         /* Update Bus references */
471         driver->dpaa_bus = &rte_dpaa_bus;
472 }
473
474 /* un-register a dpaa bus based dpaa driver */
475 void
476 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
477 {
478         struct rte_dpaa_bus *dpaa_bus;
479
480         BUS_INIT_FUNC_TRACE();
481
482         dpaa_bus = driver->dpaa_bus;
483
484         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
485         /* Update Bus references */
486         driver->dpaa_bus = NULL;
487 }
488
489 static int
490 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
491                       struct rte_dpaa_device *dev)
492 {
493         if (!drv || !dev) {
494                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
495                 return -1;
496         }
497
498         if (drv->drv_type == dev->device_type)
499                 return 0;
500
501         return -1;
502 }
503
504 static int
505 rte_dpaa_bus_dev_build(void)
506 {
507         int ret;
508
509         /* Load the device-tree driver */
510         ret = of_init();
511         if (ret) {
512                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
513                 return -1;
514         }
515
516         /* Get the interface configurations from device-tree */
517         dpaa_netcfg = netcfg_acquire();
518         if (!dpaa_netcfg) {
519                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
520                 return -EINVAL;
521         }
522
523         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
524
525         if (!dpaa_netcfg->num_ethports) {
526                 DPAA_BUS_LOG(INFO, "no network interfaces available");
527                 /* This is not an error */
528                 return 0;
529         }
530
531 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
532         dump_netcfg(dpaa_netcfg);
533 #endif
534
535         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
536                      dpaa_netcfg->num_ethports);
537         ret = dpaa_create_device_list();
538         if (ret) {
539                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
540                 return ret;
541         }
542         return 0;
543 }
544
545 static int
546 rte_dpaa_bus_probe(void)
547 {
548         int ret = -1;
549         struct rte_dpaa_device *dev;
550         struct rte_dpaa_driver *drv;
551         FILE *svr_file = NULL;
552         unsigned int svr_ver;
553         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
554
555         /* If DPAA bus is not present nothing needs to be done */
556         if (!rte_dpaa_bus.detected)
557                 return 0;
558
559         rte_dpaa_bus_dev_build();
560
561         /* If no device present on DPAA bus nothing needs to be done */
562         if (TAILQ_EMPTY(&rte_dpaa_bus.device_list))
563                 return 0;
564
565         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
566         if (svr_file) {
567                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
568                         dpaa_svr_family = svr_ver & SVR_MASK;
569                 fclose(svr_file);
570         }
571
572         /* And initialize the PA->VA translation table */
573         dpaax_iova_table_populate();
574
575         /* For each registered driver, and device, call the driver->probe */
576         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
577                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
578                         ret = rte_dpaa_device_match(drv, dev);
579                         if (ret)
580                                 continue;
581
582                         if (rte_dev_is_probed(&dev->device))
583                                 continue;
584
585                         if (!drv->probe ||
586                             (dev->device.devargs &&
587                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
588                                 continue;
589
590                         if (probe_all ||
591                             (dev->device.devargs &&
592                             dev->device.devargs->policy ==
593                             RTE_DEV_WHITELISTED)) {
594                                 ret = drv->probe(drv, dev);
595                                 if (ret) {
596                                         DPAA_BUS_ERR("Unable to probe.\n");
597                                 } else {
598                                         dev->driver = drv;
599                                         dev->device.driver = &drv->driver;
600                                 }
601                         }
602                         break;
603                 }
604         }
605
606         /* Register DPAA mempool ops only if any DPAA device has
607          * been detected.
608          */
609         rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
610
611         return 0;
612 }
613
614 static struct rte_device *
615 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
616                      const void *data)
617 {
618         struct rte_dpaa_device *dev;
619
620         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
621                 if (start && &dev->device == start) {
622                         start = NULL;  /* starting point found */
623                         continue;
624                 }
625
626                 if (cmp(&dev->device, data) == 0)
627                         return &dev->device;
628         }
629
630         return NULL;
631 }
632
633 /*
634  * Get iommu class of DPAA2 devices on the bus.
635  */
636 static enum rte_iova_mode
637 rte_dpaa_get_iommu_class(void)
638 {
639         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
640             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
641                 return RTE_IOVA_DC;
642         }
643         return RTE_IOVA_PA;
644 }
645
646 static struct rte_dpaa_bus rte_dpaa_bus = {
647         .bus = {
648                 .scan = rte_dpaa_bus_scan,
649                 .probe = rte_dpaa_bus_probe,
650                 .parse = rte_dpaa_bus_parse,
651                 .find_device = rte_dpaa_find_device,
652                 .get_iommu_class = rte_dpaa_get_iommu_class,
653         },
654         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
655         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
656         .device_count = 0,
657 };
658
659 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
660
661 RTE_INIT(dpaa_init_log)
662 {
663         dpaa_logtype_bus = rte_log_register("bus.dpaa");
664         if (dpaa_logtype_bus >= 0)
665                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
666
667         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
668         if (dpaa_logtype_mempool >= 0)
669                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
670
671         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
672         if (dpaa_logtype_pmd >= 0)
673                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
674
675         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
676         if (dpaa_logtype_eventdev >= 0)
677                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
678 }