c80a44379f354ffc720dde4c3252d7327c5684f1
[deb_dpdk.git] / drivers / event / octeontx / ssovf_evdev.c
1 /*
2  *   BSD LICENSE
3  *
4  *   Copyright (C) Cavium networks Ltd. 2017.
5  *
6  *   Redistribution and use in source and binary forms, with or without
7  *   modification, are permitted provided that the following conditions
8  *   are met:
9  *
10  *     * Redistributions of source code must retain the above copyright
11  *       notice, this list of conditions and the following disclaimer.
12  *     * Redistributions in binary form must reproduce the above copyright
13  *       notice, this list of conditions and the following disclaimer in
14  *       the documentation and/or other materials provided with the
15  *       distribution.
16  *     * Neither the name of Cavium networks nor the names of its
17  *       contributors may be used to endorse or promote products derived
18  *       from this software without specific prior written permission.
19  *
20  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32
33 #include <rte_common.h>
34 #include <rte_debug.h>
35 #include <rte_dev.h>
36 #include <rte_eal.h>
37 #include <rte_lcore.h>
38 #include <rte_log.h>
39 #include <rte_malloc.h>
40 #include <rte_memory.h>
41 #include <rte_memzone.h>
42 #include <rte_vdev.h>
43
44 #include "ssovf_evdev.h"
45
46 /* SSOPF Mailbox messages */
47
48 struct ssovf_mbox_dev_info {
49         uint64_t min_deq_timeout_ns;
50         uint64_t max_deq_timeout_ns;
51         uint32_t max_num_events;
52 };
53
54 static int
55 ssovf_mbox_dev_info(struct ssovf_mbox_dev_info *info)
56 {
57         struct octeontx_mbox_hdr hdr = {0};
58         uint16_t len = sizeof(struct ssovf_mbox_dev_info);
59
60         hdr.coproc = SSO_COPROC;
61         hdr.msg = SSO_GET_DEV_INFO;
62         hdr.vfid = 0;
63
64         memset(info, 0, len);
65         return octeontx_ssovf_mbox_send(&hdr, NULL, 0, info, len);
66 }
67
68 struct ssovf_mbox_getwork_wait {
69         uint64_t wait_ns;
70 };
71
72 static int
73 ssovf_mbox_getwork_tmo_set(uint32_t timeout_ns)
74 {
75         struct octeontx_mbox_hdr hdr = {0};
76         struct ssovf_mbox_getwork_wait tmo_set;
77         uint16_t len = sizeof(struct ssovf_mbox_getwork_wait);
78         int ret;
79
80         hdr.coproc = SSO_COPROC;
81         hdr.msg = SSO_SET_GETWORK_WAIT;
82         hdr.vfid = 0;
83
84         tmo_set.wait_ns = timeout_ns;
85         ret = octeontx_ssovf_mbox_send(&hdr, &tmo_set, len, NULL, 0);
86         if (ret)
87                 ssovf_log_err("Failed to set getwork timeout(%d)", ret);
88
89         return ret;
90 }
91
92 struct ssovf_mbox_grp_pri {
93         uint8_t wgt_left; /* Read only */
94         uint8_t weight;
95         uint8_t affinity;
96         uint8_t priority;
97 };
98
99 static int
100 ssovf_mbox_priority_set(uint8_t queue, uint8_t prio)
101 {
102         struct octeontx_mbox_hdr hdr = {0};
103         struct ssovf_mbox_grp_pri grp;
104         uint16_t len = sizeof(struct ssovf_mbox_grp_pri);
105         int ret;
106
107         hdr.coproc = SSO_COPROC;
108         hdr.msg = SSO_GRP_SET_PRIORITY;
109         hdr.vfid = queue;
110
111         grp.weight = 0xff;
112         grp.affinity = 0xff;
113         grp.priority = prio / 32; /* Normalize to 0 to 7 */
114
115         ret = octeontx_ssovf_mbox_send(&hdr, &grp, len, NULL, 0);
116         if (ret)
117                 ssovf_log_err("Failed to set grp=%d prio=%d", queue, prio);
118
119         return ret;
120 }
121
122 struct ssovf_mbox_convert_ns_getworks_iter {
123         uint64_t wait_ns;
124         uint32_t getwork_iter;/* Get_work iterations for the given wait_ns */
125 };
126
127 static int
128 ssovf_mbox_timeout_ticks(uint64_t ns, uint64_t *tmo_ticks)
129 {
130         struct octeontx_mbox_hdr hdr = {0};
131         struct ssovf_mbox_convert_ns_getworks_iter ns2iter;
132         uint16_t len = sizeof(ns2iter);
133         int ret;
134
135         hdr.coproc = SSO_COPROC;
136         hdr.msg = SSO_CONVERT_NS_GETWORK_ITER;
137         hdr.vfid = 0;
138
139         memset(&ns2iter, 0, len);
140         ns2iter.wait_ns = ns;
141         ret = octeontx_ssovf_mbox_send(&hdr, &ns2iter, len, &ns2iter, len);
142         if (ret < 0 || (ret != len)) {
143                 ssovf_log_err("Failed to get tmo ticks ns=%"PRId64"", ns);
144                 return -EIO;
145         }
146
147         *tmo_ticks = ns2iter.getwork_iter;
148         return 0;
149 }
150
151 static void
152 ssovf_fastpath_fns_set(struct rte_eventdev *dev)
153 {
154         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
155
156         dev->schedule      = NULL;
157         dev->enqueue       = ssows_enq;
158         dev->enqueue_burst = ssows_enq_burst;
159         dev->dequeue       = ssows_deq;
160         dev->dequeue_burst = ssows_deq_burst;
161
162         if (edev->is_timeout_deq) {
163                 dev->dequeue       = ssows_deq_timeout;
164                 dev->dequeue_burst = ssows_deq_timeout_burst;
165         }
166 }
167
168 static void
169 ssovf_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info)
170 {
171         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
172
173         dev_info->min_dequeue_timeout_ns = edev->min_deq_timeout_ns;
174         dev_info->max_dequeue_timeout_ns = edev->max_deq_timeout_ns;
175         dev_info->max_event_queues = edev->max_event_queues;
176         dev_info->max_event_queue_flows = (1ULL << 20);
177         dev_info->max_event_queue_priority_levels = 8;
178         dev_info->max_event_priority_levels = 1;
179         dev_info->max_event_ports = edev->max_event_ports;
180         dev_info->max_event_port_dequeue_depth = 1;
181         dev_info->max_event_port_enqueue_depth = 1;
182         dev_info->max_num_events =  edev->max_num_events;
183         dev_info->event_dev_cap = RTE_EVENT_DEV_CAP_QUEUE_QOS |
184                                         RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED |
185                                         RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES;
186 }
187
188 static int
189 ssovf_configure(const struct rte_eventdev *dev)
190 {
191         struct rte_event_dev_config *conf = &dev->data->dev_conf;
192         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
193         uint64_t deq_tmo_ns;
194
195         ssovf_func_trace();
196         deq_tmo_ns = conf->dequeue_timeout_ns;
197
198         if (conf->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) {
199                 edev->is_timeout_deq = 1;
200                 deq_tmo_ns = edev->min_deq_timeout_ns;
201         }
202         edev->nb_event_queues = conf->nb_event_queues;
203         edev->nb_event_ports = conf->nb_event_ports;
204
205         return ssovf_mbox_getwork_tmo_set(deq_tmo_ns);
206 }
207
208 static void
209 ssovf_queue_def_conf(struct rte_eventdev *dev, uint8_t queue_id,
210                                  struct rte_event_queue_conf *queue_conf)
211 {
212         RTE_SET_USED(dev);
213         RTE_SET_USED(queue_id);
214
215         queue_conf->nb_atomic_flows = (1ULL << 20);
216         queue_conf->nb_atomic_order_sequences = (1ULL << 20);
217         queue_conf->event_queue_cfg = RTE_EVENT_QUEUE_CFG_ALL_TYPES;
218         queue_conf->priority = RTE_EVENT_DEV_PRIORITY_NORMAL;
219 }
220
221 static void
222 ssovf_queue_release(struct rte_eventdev *dev, uint8_t queue_id)
223 {
224         RTE_SET_USED(dev);
225         RTE_SET_USED(queue_id);
226 }
227
228 static int
229 ssovf_queue_setup(struct rte_eventdev *dev, uint8_t queue_id,
230                               const struct rte_event_queue_conf *queue_conf)
231 {
232         RTE_SET_USED(dev);
233         ssovf_func_trace("queue=%d prio=%d", queue_id, queue_conf->priority);
234
235         return ssovf_mbox_priority_set(queue_id, queue_conf->priority);
236 }
237
238 static void
239 ssovf_port_def_conf(struct rte_eventdev *dev, uint8_t port_id,
240                                  struct rte_event_port_conf *port_conf)
241 {
242         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
243
244         RTE_SET_USED(port_id);
245         port_conf->new_event_threshold = edev->max_num_events;
246         port_conf->dequeue_depth = 1;
247         port_conf->enqueue_depth = 1;
248 }
249
250 static void
251 ssovf_port_release(void *port)
252 {
253         rte_free(port);
254 }
255
256 static int
257 ssovf_port_setup(struct rte_eventdev *dev, uint8_t port_id,
258                                 const struct rte_event_port_conf *port_conf)
259 {
260         struct ssows *ws;
261         uint32_t reg_off;
262         uint8_t q;
263         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
264
265         ssovf_func_trace("port=%d", port_id);
266         RTE_SET_USED(port_conf);
267
268         /* Free memory prior to re-allocation if needed */
269         if (dev->data->ports[port_id] != NULL) {
270                 ssovf_port_release(dev->data->ports[port_id]);
271                 dev->data->ports[port_id] = NULL;
272         }
273
274         /* Allocate event port memory */
275         ws = rte_zmalloc_socket("eventdev ssows",
276                         sizeof(struct ssows), RTE_CACHE_LINE_SIZE,
277                         dev->data->socket_id);
278         if (ws == NULL) {
279                 ssovf_log_err("Failed to alloc memory for port=%d", port_id);
280                 return -ENOMEM;
281         }
282
283         ws->base = octeontx_ssovf_bar(OCTEONTX_SSO_HWS, port_id, 0);
284         if (ws->base == NULL) {
285                 rte_free(ws);
286                 ssovf_log_err("Failed to get hws base addr port=%d", port_id);
287                 return -EINVAL;
288         }
289
290         reg_off = SSOW_VHWS_OP_GET_WORK0;
291         reg_off |= 1 << 4; /* Index_ggrp_mask (Use maskset zero) */
292         reg_off |= 1 << 16; /* Wait */
293         ws->getwork = ws->base + reg_off;
294         ws->port = port_id;
295
296         for (q = 0; q < edev->nb_event_queues; q++) {
297                 ws->grps[q] = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, q, 2);
298                 if (ws->grps[q] == NULL) {
299                         rte_free(ws);
300                         ssovf_log_err("Failed to get grp%d base addr", q);
301                         return -EINVAL;
302                 }
303         }
304
305         dev->data->ports[port_id] = ws;
306         ssovf_log_dbg("port=%d ws=%p", port_id, ws);
307         return 0;
308 }
309
310 static int
311 ssovf_port_link(struct rte_eventdev *dev, void *port, const uint8_t queues[],
312                 const uint8_t priorities[], uint16_t nb_links)
313 {
314         uint16_t link;
315         uint64_t val;
316         struct ssows *ws = port;
317
318         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_links);
319         RTE_SET_USED(dev);
320         RTE_SET_USED(priorities);
321
322         for (link = 0; link < nb_links; link++) {
323                 val = queues[link];
324                 val |= (1ULL << 24); /* Set membership */
325                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
326         }
327         return (int)nb_links;
328 }
329
330 static int
331 ssovf_port_unlink(struct rte_eventdev *dev, void *port, uint8_t queues[],
332                         uint16_t nb_unlinks)
333 {
334         uint16_t unlink;
335         uint64_t val;
336         struct ssows *ws = port;
337
338         ssovf_func_trace("port=%d nb_links=%d", ws->port, nb_unlinks);
339         RTE_SET_USED(dev);
340
341         for (unlink = 0; unlink < nb_unlinks; unlink++) {
342                 val = queues[unlink];
343                 val &= ~(1ULL << 24); /* Clear membership */
344                 ssovf_write64(val, ws->base + SSOW_VHWS_GRPMSK_CHGX(0));
345         }
346         return (int)nb_unlinks;
347 }
348
349 static int
350 ssovf_timeout_ticks(struct rte_eventdev *dev, uint64_t ns, uint64_t *tmo_ticks)
351 {
352         RTE_SET_USED(dev);
353
354         return ssovf_mbox_timeout_ticks(ns, tmo_ticks);
355 }
356
357 static void
358 ssows_dump(struct ssows *ws, FILE *f)
359 {
360         uint8_t *base = ws->base;
361         uint64_t val;
362
363         fprintf(f, "\t---------------port%d---------------\n", ws->port);
364         val = ssovf_read64(base + SSOW_VHWS_TAG);
365         fprintf(f, "\ttag=0x%x tt=%d head=%d tail=%d grp=%d index=%d tail=%d\n",
366                 (uint32_t)(val & 0xffffffff), (int)(val >> 32) & 0x3,
367                 (int)(val >> 34) & 0x1, (int)(val >> 35) & 0x1,
368                 (int)(val >> 36) & 0x3ff, (int)(val >> 48) & 0x3ff,
369                 (int)(val >> 63) & 0x1);
370
371         val = ssovf_read64(base + SSOW_VHWS_WQP);
372         fprintf(f, "\twqp=0x%"PRIx64"\n", val);
373
374         val = ssovf_read64(base + SSOW_VHWS_LINKS);
375         fprintf(f, "\tindex=%d valid=%d revlink=%d tail=%d head=%d grp=%d\n",
376                 (int)(val & 0x3ff), (int)(val >> 10) & 0x1,
377                 (int)(val >> 11) & 0x3ff, (int)(val >> 26) & 0x1,
378                 (int)(val >> 27) & 0x1, (int)(val >> 28) & 0x3ff);
379
380         val = ssovf_read64(base + SSOW_VHWS_PENDTAG);
381         fprintf(f, "\tptag=0x%x ptt=%d pgwi=%d pdesc=%d pgw=%d pgww=%d ps=%d\n",
382                 (uint32_t)(val & 0xffffffff), (int)(val >> 32) & 0x3,
383                 (int)(val >> 56) & 0x1, (int)(val >> 58) & 0x1,
384                 (int)(val >> 61) & 0x1, (int)(val >> 62) & 0x1,
385                 (int)(val >> 63) & 0x1);
386
387         val = ssovf_read64(base + SSOW_VHWS_PENDWQP);
388         fprintf(f, "\tpwqp=0x%"PRIx64"\n", val);
389 }
390
391 static void
392 ssovf_dump(struct rte_eventdev *dev, FILE *f)
393 {
394         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
395         uint8_t port;
396
397         /* Dump SSOWVF debug registers */
398         for (port = 0; port < edev->nb_event_ports; port++)
399                 ssows_dump(dev->data->ports[port], f);
400 }
401
402 static int
403 ssovf_start(struct rte_eventdev *dev)
404 {
405         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
406         struct ssows *ws;
407         uint8_t *base;
408         uint8_t i;
409
410         ssovf_func_trace();
411         for (i = 0; i < edev->nb_event_ports; i++) {
412                 ws = dev->data->ports[i];
413                 ssows_reset(ws);
414                 ws->swtag_req = 0;
415         }
416
417         for (i = 0; i < edev->nb_event_queues; i++) {
418                 /* Consume all the events through HWS0 */
419                 ssows_flush_events(dev->data->ports[0], i);
420
421                 base = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, i, 0);
422                 base += SSO_VHGRP_QCTL;
423                 ssovf_write64(1, base); /* Enable SSO group */
424         }
425
426         ssovf_fastpath_fns_set(dev);
427         return 0;
428 }
429
430 static void
431 ssovf_stop(struct rte_eventdev *dev)
432 {
433         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
434         struct ssows *ws;
435         uint8_t *base;
436         uint8_t i;
437
438         ssovf_func_trace();
439         for (i = 0; i < edev->nb_event_ports; i++) {
440                 ws = dev->data->ports[i];
441                 ssows_reset(ws);
442                 ws->swtag_req = 0;
443         }
444
445         for (i = 0; i < edev->nb_event_queues; i++) {
446                 /* Consume all the events through HWS0 */
447                 ssows_flush_events(dev->data->ports[0], i);
448
449                 base = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, i, 0);
450                 base += SSO_VHGRP_QCTL;
451                 ssovf_write64(0, base); /* Disable SSO group */
452         }
453 }
454
455 static int
456 ssovf_close(struct rte_eventdev *dev)
457 {
458         struct ssovf_evdev *edev = ssovf_pmd_priv(dev);
459         uint8_t all_queues[RTE_EVENT_MAX_QUEUES_PER_DEV];
460         uint8_t i;
461
462         for (i = 0; i < edev->nb_event_queues; i++)
463                 all_queues[i] = i;
464
465         for (i = 0; i < edev->nb_event_ports; i++)
466                 ssovf_port_unlink(dev, dev->data->ports[i], all_queues,
467                         edev->nb_event_queues);
468         return 0;
469 }
470
471 /* Initialize and register event driver with DPDK Application */
472 static const struct rte_eventdev_ops ssovf_ops = {
473         .dev_infos_get    = ssovf_info_get,
474         .dev_configure    = ssovf_configure,
475         .queue_def_conf   = ssovf_queue_def_conf,
476         .queue_setup      = ssovf_queue_setup,
477         .queue_release    = ssovf_queue_release,
478         .port_def_conf    = ssovf_port_def_conf,
479         .port_setup       = ssovf_port_setup,
480         .port_release     = ssovf_port_release,
481         .port_link        = ssovf_port_link,
482         .port_unlink      = ssovf_port_unlink,
483         .timeout_ticks    = ssovf_timeout_ticks,
484         .dump             = ssovf_dump,
485         .dev_start        = ssovf_start,
486         .dev_stop         = ssovf_stop,
487         .dev_close        = ssovf_close
488 };
489
490 static int
491 ssovf_vdev_probe(struct rte_vdev_device *vdev)
492 {
493         struct octeontx_ssovf_info oinfo;
494         struct ssovf_mbox_dev_info info;
495         struct ssovf_evdev *edev;
496         struct rte_eventdev *eventdev;
497         static int ssovf_init_once;
498         const char *name;
499         int ret;
500
501         name = rte_vdev_device_name(vdev);
502         /* More than one instance is not supported */
503         if (ssovf_init_once) {
504                 ssovf_log_err("Request to create >1 %s instance", name);
505                 return -EINVAL;
506         }
507
508         eventdev = rte_event_pmd_vdev_init(name, sizeof(struct ssovf_evdev),
509                                 rte_socket_id());
510         if (eventdev == NULL) {
511                 ssovf_log_err("Failed to create eventdev vdev %s", name);
512                 return -ENOMEM;
513         }
514         eventdev->dev_ops = &ssovf_ops;
515
516         /* For secondary processes, the primary has done all the work */
517         if (rte_eal_process_type() != RTE_PROC_PRIMARY) {
518                 ssovf_fastpath_fns_set(eventdev);
519                 return 0;
520         }
521
522         ret = octeontx_ssovf_info(&oinfo);
523         if (ret) {
524                 ssovf_log_err("Failed to probe and validate ssovfs %d", ret);
525                 goto error;
526         }
527
528         edev = ssovf_pmd_priv(eventdev);
529         edev->max_event_ports = oinfo.total_ssowvfs;
530         edev->max_event_queues = oinfo.total_ssovfs;
531         edev->is_timeout_deq = 0;
532
533         ret = ssovf_mbox_dev_info(&info);
534         if (ret < 0 || ret != sizeof(struct ssovf_mbox_dev_info)) {
535                 ssovf_log_err("Failed to get mbox devinfo %d", ret);
536                 goto error;
537         }
538
539         edev->min_deq_timeout_ns = info.min_deq_timeout_ns;
540         edev->max_deq_timeout_ns = info.max_deq_timeout_ns;
541         edev->max_num_events =  info.max_num_events;
542         ssovf_log_dbg("min_deq_tmo=%"PRId64" max_deq_tmo=%"PRId64" max_evts=%d",
543                         info.min_deq_timeout_ns, info.max_deq_timeout_ns,
544                         info.max_num_events);
545
546         if (!edev->max_event_ports || !edev->max_event_queues) {
547                 ssovf_log_err("Not enough eventdev resource queues=%d ports=%d",
548                         edev->max_event_queues, edev->max_event_ports);
549                 ret = -ENODEV;
550                 goto error;
551         }
552
553         ssovf_log_info("Initializing %s domain=%d max_queues=%d max_ports=%d",
554                         name, oinfo.domain, edev->max_event_queues,
555                         edev->max_event_ports);
556
557         ssovf_init_once = 1;
558         return 0;
559
560 error:
561         rte_event_pmd_vdev_uninit(name);
562         return ret;
563 }
564
565 static int
566 ssovf_vdev_remove(struct rte_vdev_device *vdev)
567 {
568         const char *name;
569
570         name = rte_vdev_device_name(vdev);
571         ssovf_log_info("Closing %s", name);
572         return rte_event_pmd_vdev_uninit(name);
573 }
574
575 static struct rte_vdev_driver vdev_ssovf_pmd = {
576         .probe = ssovf_vdev_probe,
577         .remove = ssovf_vdev_remove
578 };
579
580 RTE_PMD_REGISTER_VDEV(EVENTDEV_NAME_OCTEONTX_PMD, vdev_ssovf_pmd);