New upstream version 18.11-rc1
[deb_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         cpu_set_t cpuset;
254         pthread_t id;
255         uint32_t cpu = rte_lcore_id();
256         int ret;
257         struct dpaa_portal *dpaa_io_portal;
258
259         BUS_INIT_FUNC_TRACE();
260
261         if ((size_t)arg == 1 || cpu == LCORE_ID_ANY)
262                 cpu = rte_get_master_lcore();
263         /* if the core id is not supported */
264         else
265                 if (cpu >= RTE_MAX_LCORE)
266                         return -1;
267
268         /* Set CPU affinity for this thread */
269         CPU_ZERO(&cpuset);
270         CPU_SET(cpu, &cpuset);
271         id = pthread_self();
272         ret = pthread_setaffinity_np(id, sizeof(cpu_set_t), &cpuset);
273         if (ret) {
274                 DPAA_BUS_LOG(ERR, "pthread_setaffinity_np failed on "
275                         "core :%d with ret: %d", cpu, ret);
276                 return ret;
277         }
278
279         /* Initialise bman thread portals */
280         ret = bman_thread_init();
281         if (ret) {
282                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
283                         "core %d with ret: %d", cpu, ret);
284                 return ret;
285         }
286
287         DPAA_BUS_LOG(DEBUG, "BMAN thread initialized");
288
289         /* Initialise qman thread portals */
290         ret = qman_thread_init();
291         if (ret) {
292                 DPAA_BUS_LOG(ERR, "bman_thread_init failed on "
293                         "core %d with ret: %d", cpu, ret);
294                 bman_thread_finish();
295                 return ret;
296         }
297
298         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
299
300         dpaa_io_portal = rte_malloc(NULL, sizeof(struct dpaa_portal),
301                                     RTE_CACHE_LINE_SIZE);
302         if (!dpaa_io_portal) {
303                 DPAA_BUS_LOG(ERR, "Unable to allocate memory");
304                 bman_thread_finish();
305                 qman_thread_finish();
306                 return -ENOMEM;
307         }
308
309         dpaa_io_portal->qman_idx = qman_get_portal_index();
310         dpaa_io_portal->bman_idx = bman_get_portal_index();
311         dpaa_io_portal->tid = syscall(SYS_gettid);
312
313         ret = pthread_setspecific(dpaa_portal_key, (void *)dpaa_io_portal);
314         if (ret) {
315                 DPAA_BUS_LOG(ERR, "pthread_setspecific failed on "
316                             "core %d with ret: %d", cpu, ret);
317                 dpaa_portal_finish(NULL);
318
319                 return ret;
320         }
321
322         RTE_PER_LCORE(dpaa_io) = true;
323
324         DPAA_BUS_LOG(DEBUG, "QMAN thread initialized");
325
326         return 0;
327 }
328
329 int
330 rte_dpaa_portal_fq_init(void *arg, struct qman_fq *fq)
331 {
332         /* Affine above created portal with channel*/
333         u32 sdqcr;
334         struct qman_portal *qp;
335         int ret;
336
337         if (unlikely(!RTE_PER_LCORE(dpaa_io))) {
338                 ret = rte_dpaa_portal_init(arg);
339                 if (ret < 0) {
340                         DPAA_BUS_LOG(ERR, "portal initialization failure");
341                         return ret;
342                 }
343         }
344
345         /* Initialise qman specific portals */
346         qp = fsl_qman_portal_create();
347         if (!qp) {
348                 DPAA_BUS_LOG(ERR, "Unable to alloc fq portal");
349                 return -1;
350         }
351         fq->qp = qp;
352         sdqcr = QM_SDQCR_CHANNELS_POOL_CONV(fq->ch_id);
353         qman_static_dequeue_add(sdqcr, qp);
354
355         return 0;
356 }
357
358 int rte_dpaa_portal_fq_close(struct qman_fq *fq)
359 {
360         return fsl_qman_portal_destroy(fq->qp);
361 }
362
363 void
364 dpaa_portal_finish(void *arg)
365 {
366         struct dpaa_portal *dpaa_io_portal = (struct dpaa_portal *)arg;
367
368         if (!dpaa_io_portal) {
369                 DPAA_BUS_LOG(DEBUG, "Portal already cleaned");
370                 return;
371         }
372
373         bman_thread_finish();
374         qman_thread_finish();
375
376         pthread_setspecific(dpaa_portal_key, NULL);
377
378         rte_free(dpaa_io_portal);
379         dpaa_io_portal = NULL;
380
381         RTE_PER_LCORE(dpaa_io) = false;
382 }
383
384 static int
385 rte_dpaa_bus_parse(const char *name, void *out_name)
386 {
387         int i, j;
388         int max_fman = 2, max_macs = 16;
389         char *sep = strchr(name, ':');
390
391         if (strncmp(name, RTE_STR(FSL_DPAA_BUS_NAME),
392                 strlen(RTE_STR(FSL_DPAA_BUS_NAME)))) {
393                 return -EINVAL;
394         }
395
396         if (!sep) {
397                 DPAA_BUS_ERR("Incorrect device name observed");
398                 return -EINVAL;
399         }
400
401         sep = (char *) (sep + 1);
402
403         for (i = 0; i < max_fman; i++) {
404                 for (j = 0; j < max_macs; j++) {
405                         char fm_name[16];
406                         snprintf(fm_name, 16, "fm%d-mac%d", i, j);
407                         if (strcmp(fm_name, sep) == 0) {
408                                 if (out_name)
409                                         strcpy(out_name, sep);
410                                 return 0;
411                         }
412                 }
413         }
414
415         for (i = 0; i < RTE_LIBRTE_DPAA_MAX_CRYPTODEV; i++) {
416                 char sec_name[16];
417
418                 snprintf(sec_name, 16, "dpaa-sec%d", i);
419                 if (strcmp(sec_name, sep) == 0) {
420                         if (out_name)
421                                 strcpy(out_name, sep);
422                         return 0;
423                 }
424         }
425
426         return -EINVAL;
427 }
428
429 #define DPAA_DEV_PATH1 "/sys/devices/platform/soc/soc:fsl,dpaa"
430 #define DPAA_DEV_PATH2 "/sys/devices/platform/fsl,dpaa"
431
432 static int
433 rte_dpaa_bus_scan(void)
434 {
435         int ret;
436
437         BUS_INIT_FUNC_TRACE();
438
439         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
440             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
441                 RTE_LOG(DEBUG, EAL, "DPAA Bus not present. Skipping.\n");
442                 return 0;
443         }
444
445         /* Load the device-tree driver */
446         ret = of_init();
447         if (ret) {
448                 DPAA_BUS_LOG(ERR, "of_init failed with ret: %d", ret);
449                 return -1;
450         }
451
452         /* Get the interface configurations from device-tree */
453         dpaa_netcfg = netcfg_acquire();
454         if (!dpaa_netcfg) {
455                 DPAA_BUS_LOG(ERR, "netcfg_acquire failed");
456                 return -EINVAL;
457         }
458
459         RTE_LOG(NOTICE, EAL, "DPAA Bus Detected\n");
460
461         if (!dpaa_netcfg->num_ethports) {
462                 DPAA_BUS_LOG(INFO, "no network interfaces available");
463                 /* This is not an error */
464                 return 0;
465         }
466
467 #ifdef RTE_LIBRTE_DPAA_DEBUG_DRIVER
468         dump_netcfg(dpaa_netcfg);
469 #endif
470
471         DPAA_BUS_LOG(DEBUG, "Number of ethernet devices = %d",
472                      dpaa_netcfg->num_ethports);
473         ret = dpaa_create_device_list();
474         if (ret) {
475                 DPAA_BUS_LOG(ERR, "Unable to create device list. (%d)", ret);
476                 return ret;
477         }
478
479         /* create the key, supplying a function that'll be invoked
480          * when a portal affined thread will be deleted.
481          */
482         ret = pthread_key_create(&dpaa_portal_key, dpaa_portal_finish);
483         if (ret) {
484                 DPAA_BUS_LOG(DEBUG, "Unable to create pthread key. (%d)", ret);
485                 dpaa_clean_device_list();
486                 return ret;
487         }
488
489         return 0;
490 }
491
492 /* register a dpaa bus based dpaa driver */
493 void
494 rte_dpaa_driver_register(struct rte_dpaa_driver *driver)
495 {
496         RTE_VERIFY(driver);
497
498         BUS_INIT_FUNC_TRACE();
499
500         TAILQ_INSERT_TAIL(&rte_dpaa_bus.driver_list, driver, next);
501         /* Update Bus references */
502         driver->dpaa_bus = &rte_dpaa_bus;
503 }
504
505 /* un-register a dpaa bus based dpaa driver */
506 void
507 rte_dpaa_driver_unregister(struct rte_dpaa_driver *driver)
508 {
509         struct rte_dpaa_bus *dpaa_bus;
510
511         BUS_INIT_FUNC_TRACE();
512
513         dpaa_bus = driver->dpaa_bus;
514
515         TAILQ_REMOVE(&dpaa_bus->driver_list, driver, next);
516         /* Update Bus references */
517         driver->dpaa_bus = NULL;
518 }
519
520 static int
521 rte_dpaa_device_match(struct rte_dpaa_driver *drv,
522                       struct rte_dpaa_device *dev)
523 {
524         if (!drv || !dev) {
525                 DPAA_BUS_DEBUG("Invalid drv or dev received.");
526                 return -1;
527         }
528
529         if (drv->drv_type == dev->device_type)
530                 return 0;
531
532         return -1;
533 }
534
535 static int
536 rte_dpaa_bus_probe(void)
537 {
538         int ret = -1;
539         struct rte_dpaa_device *dev;
540         struct rte_dpaa_driver *drv;
541         FILE *svr_file = NULL;
542         unsigned int svr_ver;
543         int probe_all = rte_dpaa_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
544
545         svr_file = fopen(DPAA_SOC_ID_FILE, "r");
546         if (svr_file) {
547                 if (fscanf(svr_file, "svr:%x", &svr_ver) > 0)
548                         dpaa_svr_family = svr_ver & SVR_MASK;
549                 fclose(svr_file);
550         }
551
552         /* And initialize the PA->VA translation table */
553         dpaax_iova_table_populate();
554
555         /* For each registered driver, and device, call the driver->probe */
556         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
557                 TAILQ_FOREACH(drv, &rte_dpaa_bus.driver_list, next) {
558                         ret = rte_dpaa_device_match(drv, dev);
559                         if (ret)
560                                 continue;
561
562                         if (rte_dev_is_probed(&dev->device))
563                                 continue;
564
565                         if (!drv->probe ||
566                             (dev->device.devargs &&
567                             dev->device.devargs->policy == RTE_DEV_BLACKLISTED))
568                                 continue;
569
570                         if (probe_all ||
571                             (dev->device.devargs &&
572                             dev->device.devargs->policy ==
573                             RTE_DEV_WHITELISTED)) {
574                                 ret = drv->probe(drv, dev);
575                                 if (ret) {
576                                         DPAA_BUS_ERR("Unable to probe.\n");
577                                 } else {
578                                         dev->driver = drv;
579                                         dev->device.driver = &drv->driver;
580                                 }
581                         }
582                         break;
583                 }
584         }
585
586         /* Register DPAA mempool ops only if any DPAA device has
587          * been detected.
588          */
589         if (!TAILQ_EMPTY(&rte_dpaa_bus.device_list))
590                 rte_mbuf_set_platform_mempool_ops(DPAA_MEMPOOL_OPS_NAME);
591
592         return 0;
593 }
594
595 static struct rte_device *
596 rte_dpaa_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
597                      const void *data)
598 {
599         struct rte_dpaa_device *dev;
600
601         TAILQ_FOREACH(dev, &rte_dpaa_bus.device_list, next) {
602                 if (start && &dev->device == start) {
603                         start = NULL;  /* starting point found */
604                         continue;
605                 }
606
607                 if (cmp(&dev->device, data) == 0)
608                         return &dev->device;
609         }
610
611         return NULL;
612 }
613
614 /*
615  * Get iommu class of DPAA2 devices on the bus.
616  */
617 static enum rte_iova_mode
618 rte_dpaa_get_iommu_class(void)
619 {
620         if ((access(DPAA_DEV_PATH1, F_OK) != 0) &&
621             (access(DPAA_DEV_PATH2, F_OK) != 0)) {
622                 return RTE_IOVA_DC;
623         }
624         return RTE_IOVA_PA;
625 }
626
627 static struct rte_dpaa_bus rte_dpaa_bus = {
628         .bus = {
629                 .scan = rte_dpaa_bus_scan,
630                 .probe = rte_dpaa_bus_probe,
631                 .parse = rte_dpaa_bus_parse,
632                 .find_device = rte_dpaa_find_device,
633                 .get_iommu_class = rte_dpaa_get_iommu_class,
634         },
635         .device_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.device_list),
636         .driver_list = TAILQ_HEAD_INITIALIZER(rte_dpaa_bus.driver_list),
637         .device_count = 0,
638 };
639
640 RTE_REGISTER_BUS(FSL_DPAA_BUS_NAME, rte_dpaa_bus.bus);
641
642 RTE_INIT(dpaa_init_log)
643 {
644         dpaa_logtype_bus = rte_log_register("bus.dpaa");
645         if (dpaa_logtype_bus >= 0)
646                 rte_log_set_level(dpaa_logtype_bus, RTE_LOG_NOTICE);
647
648         dpaa_logtype_mempool = rte_log_register("mempool.dpaa");
649         if (dpaa_logtype_mempool >= 0)
650                 rte_log_set_level(dpaa_logtype_mempool, RTE_LOG_NOTICE);
651
652         dpaa_logtype_pmd = rte_log_register("pmd.net.dpaa");
653         if (dpaa_logtype_pmd >= 0)
654                 rte_log_set_level(dpaa_logtype_pmd, RTE_LOG_NOTICE);
655
656         dpaa_logtype_eventdev = rte_log_register("pmd.event.dpaa");
657         if (dpaa_logtype_eventdev >= 0)
658                 rte_log_set_level(dpaa_logtype_eventdev, RTE_LOG_NOTICE);
659 }