1 // SPDX-License-Identifier: GPL-2.0
3 * System Control and Management Interface (SCMI) Performance Protocol
5 * Copyright (C) 2018 ARM Ltd.
8 #define pr_fmt(fmt) "SCMI Notifications PERF - " fmt
10 #include <linux/bits.h>
13 #include <linux/io-64-nonatomic-hi-lo.h>
14 #include <linux/platform_device.h>
15 #include <linux/pm_opp.h>
16 #include <linux/scmi_protocol.h>
17 #include <linux/sort.h>
22 enum scmi_performance_protocol_cmd {
23 PERF_DOMAIN_ATTRIBUTES = 0x3,
24 PERF_DESCRIBE_LEVELS = 0x4,
25 PERF_LIMITS_SET = 0x5,
26 PERF_LIMITS_GET = 0x6,
29 PERF_NOTIFY_LIMITS = 0x9,
30 PERF_NOTIFY_LEVEL = 0xa,
31 PERF_DESCRIBE_FASTCHANNEL = 0xb,
40 struct scmi_msg_resp_perf_attributes {
43 #define POWER_SCALE_IN_MILLIWATT(x) ((x) & BIT(0))
44 __le32 stats_addr_low;
45 __le32 stats_addr_high;
49 struct scmi_msg_resp_perf_domain_attributes {
51 #define SUPPORTS_SET_LIMITS(x) ((x) & BIT(31))
52 #define SUPPORTS_SET_PERF_LVL(x) ((x) & BIT(30))
53 #define SUPPORTS_PERF_LIMIT_NOTIFY(x) ((x) & BIT(29))
54 #define SUPPORTS_PERF_LEVEL_NOTIFY(x) ((x) & BIT(28))
55 #define SUPPORTS_PERF_FASTCHANNELS(x) ((x) & BIT(27))
57 __le32 sustained_freq_khz;
58 __le32 sustained_perf_level;
59 u8 name[SCMI_MAX_STR_SIZE];
62 struct scmi_msg_perf_describe_levels {
67 struct scmi_perf_set_limits {
73 struct scmi_perf_get_limits {
78 struct scmi_perf_set_level {
83 struct scmi_perf_notify_level_or_limits {
88 struct scmi_perf_limits_notify_payld {
95 struct scmi_perf_level_notify_payld {
98 __le32 performance_level;
101 struct scmi_msg_resp_perf_describe_levels {
103 __le16 num_remaining;
107 __le16 transition_latency_us;
112 struct scmi_perf_get_fc_info {
117 struct scmi_msg_resp_perf_desc_fc {
119 #define SUPPORTS_DOORBELL(x) ((x) & BIT(0))
120 #define DOORBELL_REG_WIDTH(x) FIELD_GET(GENMASK(2, 1), (x))
122 __le32 chan_addr_low;
123 __le32 chan_addr_high;
129 __le32 db_preserve_lmask;
130 __le32 db_preserve_hmask;
133 struct scmi_fc_db_info {
140 struct scmi_fc_info {
141 void __iomem *level_set_addr;
142 void __iomem *limit_set_addr;
143 void __iomem *level_get_addr;
144 void __iomem *limit_get_addr;
145 struct scmi_fc_db_info *level_set_db;
146 struct scmi_fc_db_info *limit_set_db;
149 struct perf_dom_info {
152 bool perf_limit_notify;
153 bool perf_level_notify;
154 bool perf_fastchannels;
156 u32 sustained_freq_khz;
157 u32 sustained_perf_level;
159 char name[SCMI_MAX_STR_SIZE];
160 struct scmi_opp opp[MAX_OPPS];
161 struct scmi_fc_info *fc_info;
164 struct scmi_perf_info {
170 struct perf_dom_info *dom_info;
173 static enum scmi_performance_protocol_cmd evt_2_cmd[] = {
178 static int scmi_perf_attributes_get(const struct scmi_handle *handle,
179 struct scmi_perf_info *pi)
183 struct scmi_msg_resp_perf_attributes *attr;
185 ret = scmi_xfer_get_init(handle, PROTOCOL_ATTRIBUTES,
186 SCMI_PROTOCOL_PERF, 0, sizeof(*attr), &t);
192 ret = scmi_do_xfer(handle, t);
194 u16 flags = le16_to_cpu(attr->flags);
196 pi->num_domains = le16_to_cpu(attr->num_domains);
197 pi->power_scale_mw = POWER_SCALE_IN_MILLIWATT(flags);
198 pi->stats_addr = le32_to_cpu(attr->stats_addr_low) |
199 (u64)le32_to_cpu(attr->stats_addr_high) << 32;
200 pi->stats_size = le32_to_cpu(attr->stats_size);
203 scmi_xfer_put(handle, t);
208 scmi_perf_domain_attributes_get(const struct scmi_handle *handle, u32 domain,
209 struct perf_dom_info *dom_info)
213 struct scmi_msg_resp_perf_domain_attributes *attr;
215 ret = scmi_xfer_get_init(handle, PERF_DOMAIN_ATTRIBUTES,
216 SCMI_PROTOCOL_PERF, sizeof(domain),
221 put_unaligned_le32(domain, t->tx.buf);
224 ret = scmi_do_xfer(handle, t);
226 u32 flags = le32_to_cpu(attr->flags);
228 dom_info->set_limits = SUPPORTS_SET_LIMITS(flags);
229 dom_info->set_perf = SUPPORTS_SET_PERF_LVL(flags);
230 dom_info->perf_limit_notify = SUPPORTS_PERF_LIMIT_NOTIFY(flags);
231 dom_info->perf_level_notify = SUPPORTS_PERF_LEVEL_NOTIFY(flags);
232 dom_info->perf_fastchannels = SUPPORTS_PERF_FASTCHANNELS(flags);
233 dom_info->sustained_freq_khz =
234 le32_to_cpu(attr->sustained_freq_khz);
235 dom_info->sustained_perf_level =
236 le32_to_cpu(attr->sustained_perf_level);
237 if (!dom_info->sustained_freq_khz ||
238 !dom_info->sustained_perf_level)
239 /* CPUFreq converts to kHz, hence default 1000 */
240 dom_info->mult_factor = 1000;
242 dom_info->mult_factor =
243 (dom_info->sustained_freq_khz * 1000) /
244 dom_info->sustained_perf_level;
245 strlcpy(dom_info->name, attr->name, SCMI_MAX_STR_SIZE);
248 scmi_xfer_put(handle, t);
252 static int opp_cmp_func(const void *opp1, const void *opp2)
254 const struct scmi_opp *t1 = opp1, *t2 = opp2;
256 return t1->perf - t2->perf;
260 scmi_perf_describe_levels_get(const struct scmi_handle *handle, u32 domain,
261 struct perf_dom_info *perf_dom)
265 u16 num_returned, num_remaining;
267 struct scmi_opp *opp;
268 struct scmi_msg_perf_describe_levels *dom_info;
269 struct scmi_msg_resp_perf_describe_levels *level_info;
271 ret = scmi_xfer_get_init(handle, PERF_DESCRIBE_LEVELS,
272 SCMI_PROTOCOL_PERF, sizeof(*dom_info), 0, &t);
276 dom_info = t->tx.buf;
277 level_info = t->rx.buf;
280 dom_info->domain = cpu_to_le32(domain);
281 /* Set the number of OPPs to be skipped/already read */
282 dom_info->level_index = cpu_to_le32(tot_opp_cnt);
284 ret = scmi_do_xfer(handle, t);
288 num_returned = le16_to_cpu(level_info->num_returned);
289 num_remaining = le16_to_cpu(level_info->num_remaining);
290 if (tot_opp_cnt + num_returned > MAX_OPPS) {
291 dev_err(handle->dev, "No. of OPPs exceeded MAX_OPPS");
295 opp = &perf_dom->opp[tot_opp_cnt];
296 for (cnt = 0; cnt < num_returned; cnt++, opp++) {
297 opp->perf = le32_to_cpu(level_info->opp[cnt].perf_val);
298 opp->power = le32_to_cpu(level_info->opp[cnt].power);
299 opp->trans_latency_us = le16_to_cpu
300 (level_info->opp[cnt].transition_latency_us);
302 dev_dbg(handle->dev, "Level %d Power %d Latency %dus\n",
303 opp->perf, opp->power, opp->trans_latency_us);
306 tot_opp_cnt += num_returned;
308 scmi_reset_rx_to_maxsz(handle, t);
310 * check for both returned and remaining to avoid infinite
311 * loop due to buggy firmware
313 } while (num_returned && num_remaining);
315 perf_dom->opp_count = tot_opp_cnt;
316 scmi_xfer_put(handle, t);
318 sort(perf_dom->opp, tot_opp_cnt, sizeof(*opp), opp_cmp_func, NULL);
322 #define SCMI_PERF_FC_RING_DB(w) \
327 val = ioread##w(db->addr) & db->mask; \
328 iowrite##w((u##w)db->set | val, db->addr); \
331 static void scmi_perf_fc_ring_db(struct scmi_fc_db_info *db)
333 if (!db || !db->addr)
337 SCMI_PERF_FC_RING_DB(8);
338 else if (db->width == 2)
339 SCMI_PERF_FC_RING_DB(16);
340 else if (db->width == 4)
341 SCMI_PERF_FC_RING_DB(32);
342 else /* db->width == 8 */
344 SCMI_PERF_FC_RING_DB(64);
350 val = ioread64_hi_lo(db->addr) & db->mask;
351 iowrite64_hi_lo(db->set | val, db->addr);
356 static int scmi_perf_mb_limits_set(const struct scmi_handle *handle, u32 domain,
357 u32 max_perf, u32 min_perf)
361 struct scmi_perf_set_limits *limits;
363 ret = scmi_xfer_get_init(handle, PERF_LIMITS_SET, SCMI_PROTOCOL_PERF,
364 sizeof(*limits), 0, &t);
369 limits->domain = cpu_to_le32(domain);
370 limits->max_level = cpu_to_le32(max_perf);
371 limits->min_level = cpu_to_le32(min_perf);
373 ret = scmi_do_xfer(handle, t);
375 scmi_xfer_put(handle, t);
379 static int scmi_perf_limits_set(const struct scmi_handle *handle, u32 domain,
380 u32 max_perf, u32 min_perf)
382 struct scmi_perf_info *pi = handle->perf_priv;
383 struct perf_dom_info *dom = pi->dom_info + domain;
385 if (dom->fc_info && dom->fc_info->limit_set_addr) {
386 iowrite32(max_perf, dom->fc_info->limit_set_addr);
387 iowrite32(min_perf, dom->fc_info->limit_set_addr + 4);
388 scmi_perf_fc_ring_db(dom->fc_info->limit_set_db);
392 return scmi_perf_mb_limits_set(handle, domain, max_perf, min_perf);
395 static int scmi_perf_mb_limits_get(const struct scmi_handle *handle, u32 domain,
396 u32 *max_perf, u32 *min_perf)
400 struct scmi_perf_get_limits *limits;
402 ret = scmi_xfer_get_init(handle, PERF_LIMITS_GET, SCMI_PROTOCOL_PERF,
403 sizeof(__le32), 0, &t);
407 put_unaligned_le32(domain, t->tx.buf);
409 ret = scmi_do_xfer(handle, t);
413 *max_perf = le32_to_cpu(limits->max_level);
414 *min_perf = le32_to_cpu(limits->min_level);
417 scmi_xfer_put(handle, t);
421 static int scmi_perf_limits_get(const struct scmi_handle *handle, u32 domain,
422 u32 *max_perf, u32 *min_perf)
424 struct scmi_perf_info *pi = handle->perf_priv;
425 struct perf_dom_info *dom = pi->dom_info + domain;
427 if (dom->fc_info && dom->fc_info->limit_get_addr) {
428 *max_perf = ioread32(dom->fc_info->limit_get_addr);
429 *min_perf = ioread32(dom->fc_info->limit_get_addr + 4);
433 return scmi_perf_mb_limits_get(handle, domain, max_perf, min_perf);
436 static int scmi_perf_mb_level_set(const struct scmi_handle *handle, u32 domain,
437 u32 level, bool poll)
441 struct scmi_perf_set_level *lvl;
443 ret = scmi_xfer_get_init(handle, PERF_LEVEL_SET, SCMI_PROTOCOL_PERF,
444 sizeof(*lvl), 0, &t);
448 t->hdr.poll_completion = poll;
450 lvl->domain = cpu_to_le32(domain);
451 lvl->level = cpu_to_le32(level);
453 ret = scmi_do_xfer(handle, t);
455 scmi_xfer_put(handle, t);
459 static int scmi_perf_level_set(const struct scmi_handle *handle, u32 domain,
460 u32 level, bool poll)
462 struct scmi_perf_info *pi = handle->perf_priv;
463 struct perf_dom_info *dom = pi->dom_info + domain;
465 if (dom->fc_info && dom->fc_info->level_set_addr) {
466 iowrite32(level, dom->fc_info->level_set_addr);
467 scmi_perf_fc_ring_db(dom->fc_info->level_set_db);
471 return scmi_perf_mb_level_set(handle, domain, level, poll);
474 static int scmi_perf_mb_level_get(const struct scmi_handle *handle, u32 domain,
475 u32 *level, bool poll)
480 ret = scmi_xfer_get_init(handle, PERF_LEVEL_GET, SCMI_PROTOCOL_PERF,
481 sizeof(u32), sizeof(u32), &t);
485 t->hdr.poll_completion = poll;
486 put_unaligned_le32(domain, t->tx.buf);
488 ret = scmi_do_xfer(handle, t);
490 *level = get_unaligned_le32(t->rx.buf);
492 scmi_xfer_put(handle, t);
496 static int scmi_perf_level_get(const struct scmi_handle *handle, u32 domain,
497 u32 *level, bool poll)
499 struct scmi_perf_info *pi = handle->perf_priv;
500 struct perf_dom_info *dom = pi->dom_info + domain;
502 if (dom->fc_info && dom->fc_info->level_get_addr) {
503 *level = ioread32(dom->fc_info->level_get_addr);
507 return scmi_perf_mb_level_get(handle, domain, level, poll);
510 static int scmi_perf_level_limits_notify(const struct scmi_handle *handle,
511 u32 domain, int message_id,
516 struct scmi_perf_notify_level_or_limits *notify;
518 ret = scmi_xfer_get_init(handle, message_id, SCMI_PROTOCOL_PERF,
519 sizeof(*notify), 0, &t);
524 notify->domain = cpu_to_le32(domain);
525 notify->notify_enable = enable ? cpu_to_le32(BIT(0)) : 0;
527 ret = scmi_do_xfer(handle, t);
529 scmi_xfer_put(handle, t);
533 static bool scmi_perf_fc_size_is_valid(u32 msg, u32 size)
535 if ((msg == PERF_LEVEL_GET || msg == PERF_LEVEL_SET) && size == 4)
537 if ((msg == PERF_LIMITS_GET || msg == PERF_LIMITS_SET) && size == 8)
543 scmi_perf_domain_desc_fc(const struct scmi_handle *handle, u32 domain,
544 u32 message_id, void __iomem **p_addr,
545 struct scmi_fc_db_info **p_db)
553 struct scmi_fc_db_info *db;
554 struct scmi_perf_get_fc_info *info;
555 struct scmi_msg_resp_perf_desc_fc *resp;
560 ret = scmi_xfer_get_init(handle, PERF_DESCRIBE_FASTCHANNEL,
562 sizeof(*info), sizeof(*resp), &t);
567 info->domain = cpu_to_le32(domain);
568 info->message_id = cpu_to_le32(message_id);
570 ret = scmi_do_xfer(handle, t);
575 flags = le32_to_cpu(resp->attr);
576 size = le32_to_cpu(resp->chan_size);
577 if (!scmi_perf_fc_size_is_valid(message_id, size))
580 phys_addr = le32_to_cpu(resp->chan_addr_low);
581 phys_addr |= (u64)le32_to_cpu(resp->chan_addr_high) << 32;
582 addr = devm_ioremap(handle->dev, phys_addr, size);
587 if (p_db && SUPPORTS_DOORBELL(flags)) {
588 db = devm_kzalloc(handle->dev, sizeof(*db), GFP_KERNEL);
592 size = 1 << DOORBELL_REG_WIDTH(flags);
593 phys_addr = le32_to_cpu(resp->db_addr_low);
594 phys_addr |= (u64)le32_to_cpu(resp->db_addr_high) << 32;
595 addr = devm_ioremap(handle->dev, phys_addr, size);
601 db->set = le32_to_cpu(resp->db_set_lmask);
602 db->set |= (u64)le32_to_cpu(resp->db_set_hmask) << 32;
603 db->mask = le32_to_cpu(resp->db_preserve_lmask);
604 db->mask |= (u64)le32_to_cpu(resp->db_preserve_hmask) << 32;
608 scmi_xfer_put(handle, t);
611 static void scmi_perf_domain_init_fc(const struct scmi_handle *handle,
612 u32 domain, struct scmi_fc_info **p_fc)
614 struct scmi_fc_info *fc;
616 fc = devm_kzalloc(handle->dev, sizeof(*fc), GFP_KERNEL);
620 scmi_perf_domain_desc_fc(handle, domain, PERF_LEVEL_SET,
621 &fc->level_set_addr, &fc->level_set_db);
622 scmi_perf_domain_desc_fc(handle, domain, PERF_LEVEL_GET,
623 &fc->level_get_addr, NULL);
624 scmi_perf_domain_desc_fc(handle, domain, PERF_LIMITS_SET,
625 &fc->limit_set_addr, &fc->limit_set_db);
626 scmi_perf_domain_desc_fc(handle, domain, PERF_LIMITS_GET,
627 &fc->limit_get_addr, NULL);
631 /* Device specific ops */
632 static int scmi_dev_domain_id(struct device *dev)
634 struct of_phandle_args clkspec;
636 if (of_parse_phandle_with_args(dev->of_node, "clocks", "#clock-cells",
640 return clkspec.args[0];
643 static int scmi_dvfs_device_opps_add(const struct scmi_handle *handle,
646 int idx, ret, domain;
648 struct scmi_opp *opp;
649 struct perf_dom_info *dom;
650 struct scmi_perf_info *pi = handle->perf_priv;
652 domain = scmi_dev_domain_id(dev);
656 dom = pi->dom_info + domain;
658 for (opp = dom->opp, idx = 0; idx < dom->opp_count; idx++, opp++) {
659 freq = opp->perf * dom->mult_factor;
661 ret = dev_pm_opp_add(dev, freq, 0);
663 dev_warn(dev, "failed to add opp %luHz\n", freq);
666 freq = (--opp)->perf * dom->mult_factor;
667 dev_pm_opp_remove(dev, freq);
675 static int scmi_dvfs_transition_latency_get(const struct scmi_handle *handle,
678 struct perf_dom_info *dom;
679 struct scmi_perf_info *pi = handle->perf_priv;
680 int domain = scmi_dev_domain_id(dev);
685 dom = pi->dom_info + domain;
687 return dom->opp[dom->opp_count - 1].trans_latency_us * 1000;
690 static int scmi_dvfs_freq_set(const struct scmi_handle *handle, u32 domain,
691 unsigned long freq, bool poll)
693 struct scmi_perf_info *pi = handle->perf_priv;
694 struct perf_dom_info *dom = pi->dom_info + domain;
696 return scmi_perf_level_set(handle, domain, freq / dom->mult_factor,
700 static int scmi_dvfs_freq_get(const struct scmi_handle *handle, u32 domain,
701 unsigned long *freq, bool poll)
705 struct scmi_perf_info *pi = handle->perf_priv;
706 struct perf_dom_info *dom = pi->dom_info + domain;
708 ret = scmi_perf_level_get(handle, domain, &level, poll);
710 *freq = level * dom->mult_factor;
715 static int scmi_dvfs_est_power_get(const struct scmi_handle *handle, u32 domain,
716 unsigned long *freq, unsigned long *power)
718 struct scmi_perf_info *pi = handle->perf_priv;
719 struct perf_dom_info *dom;
720 unsigned long opp_freq;
721 int idx, ret = -EINVAL;
722 struct scmi_opp *opp;
724 dom = pi->dom_info + domain;
728 for (opp = dom->opp, idx = 0; idx < dom->opp_count; idx++, opp++) {
729 opp_freq = opp->perf * dom->mult_factor;
730 if (opp_freq < *freq)
742 static bool scmi_fast_switch_possible(const struct scmi_handle *handle,
745 struct perf_dom_info *dom;
746 struct scmi_perf_info *pi = handle->perf_priv;
748 dom = pi->dom_info + scmi_dev_domain_id(dev);
750 return dom->fc_info && dom->fc_info->level_set_addr;
753 static const struct scmi_perf_ops perf_ops = {
754 .limits_set = scmi_perf_limits_set,
755 .limits_get = scmi_perf_limits_get,
756 .level_set = scmi_perf_level_set,
757 .level_get = scmi_perf_level_get,
758 .device_domain_id = scmi_dev_domain_id,
759 .transition_latency_get = scmi_dvfs_transition_latency_get,
760 .device_opps_add = scmi_dvfs_device_opps_add,
761 .freq_set = scmi_dvfs_freq_set,
762 .freq_get = scmi_dvfs_freq_get,
763 .est_power_get = scmi_dvfs_est_power_get,
764 .fast_switch_possible = scmi_fast_switch_possible,
767 static int scmi_perf_set_notify_enabled(const struct scmi_handle *handle,
768 u8 evt_id, u32 src_id, bool enable)
772 if (evt_id >= ARRAY_SIZE(evt_2_cmd))
775 cmd_id = evt_2_cmd[evt_id];
776 ret = scmi_perf_level_limits_notify(handle, src_id, cmd_id, enable);
778 pr_debug("FAIL_ENABLED - evt[%X] dom[%d] - ret:%d\n",
779 evt_id, src_id, ret);
784 static void *scmi_perf_fill_custom_report(const struct scmi_handle *handle,
785 u8 evt_id, ktime_t timestamp,
786 const void *payld, size_t payld_sz,
787 void *report, u32 *src_id)
792 case SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED:
794 const struct scmi_perf_limits_notify_payld *p = payld;
795 struct scmi_perf_limits_report *r = report;
797 if (sizeof(*p) != payld_sz)
800 r->timestamp = timestamp;
801 r->agent_id = le32_to_cpu(p->agent_id);
802 r->domain_id = le32_to_cpu(p->domain_id);
803 r->range_max = le32_to_cpu(p->range_max);
804 r->range_min = le32_to_cpu(p->range_min);
805 *src_id = r->domain_id;
809 case SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED:
811 const struct scmi_perf_level_notify_payld *p = payld;
812 struct scmi_perf_level_report *r = report;
814 if (sizeof(*p) != payld_sz)
817 r->timestamp = timestamp;
818 r->agent_id = le32_to_cpu(p->agent_id);
819 r->domain_id = le32_to_cpu(p->domain_id);
820 r->performance_level = le32_to_cpu(p->performance_level);
821 *src_id = r->domain_id;
832 static const struct scmi_event perf_events[] = {
834 .id = SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED,
835 .max_payld_sz = sizeof(struct scmi_perf_limits_notify_payld),
836 .max_report_sz = sizeof(struct scmi_perf_limits_report),
839 .id = SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED,
840 .max_payld_sz = sizeof(struct scmi_perf_level_notify_payld),
841 .max_report_sz = sizeof(struct scmi_perf_level_report),
845 static const struct scmi_event_ops perf_event_ops = {
846 .set_notify_enabled = scmi_perf_set_notify_enabled,
847 .fill_custom_report = scmi_perf_fill_custom_report,
850 static int scmi_perf_protocol_init(struct scmi_handle *handle)
854 struct scmi_perf_info *pinfo;
856 scmi_version_get(handle, SCMI_PROTOCOL_PERF, &version);
858 dev_dbg(handle->dev, "Performance Version %d.%d\n",
859 PROTOCOL_REV_MAJOR(version), PROTOCOL_REV_MINOR(version));
861 pinfo = devm_kzalloc(handle->dev, sizeof(*pinfo), GFP_KERNEL);
865 scmi_perf_attributes_get(handle, pinfo);
867 pinfo->dom_info = devm_kcalloc(handle->dev, pinfo->num_domains,
868 sizeof(*pinfo->dom_info), GFP_KERNEL);
869 if (!pinfo->dom_info)
872 for (domain = 0; domain < pinfo->num_domains; domain++) {
873 struct perf_dom_info *dom = pinfo->dom_info + domain;
875 scmi_perf_domain_attributes_get(handle, domain, dom);
876 scmi_perf_describe_levels_get(handle, domain, dom);
878 if (dom->perf_fastchannels)
879 scmi_perf_domain_init_fc(handle, domain, &dom->fc_info);
882 scmi_register_protocol_events(handle,
883 SCMI_PROTOCOL_PERF, SCMI_PROTO_QUEUE_SZ,
884 &perf_event_ops, perf_events,
885 ARRAY_SIZE(perf_events),
888 pinfo->version = version;
889 handle->perf_ops = &perf_ops;
890 handle->perf_priv = pinfo;
895 DEFINE_SCMI_PROTOCOL_REGISTER_UNREGISTER(SCMI_PROTOCOL_PERF, perf)