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firmware: arm_scmi: Report frequencies in the perf notifications

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Extend the perf notification report to include pre-calculated frequencies
corresponding to the reported limits/levels event; such frequencies are
properly computed based on the stored known OPPs information taking into
consideration if the current operating mode is level indexed or not.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20240212123233.1230090-12-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2024-02-12 12:32:33 +00:00 • committed by Sudeep Holla
parent 23443a3c7c
commit 22ffc748a6
2 changed files with 72 additions and 0 deletions
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69
drivers/firmware/arm_scmi/perf.c
View file

@ -1055,18 +1055,47 @@ static int scmi_perf_set_notify_enabled(const struct scmi_protocol_handle *ph,
return ret;
}
static int
scmi_perf_xlate_opp_to_freq(struct perf_dom_info *dom,
unsigned int index, unsigned long *freq)
{
struct scmi_opp *opp;
if (!dom || !freq)
return -EINVAL;
if (!dom->level_indexing_mode) {
opp = xa_load(&dom->opps_by_lvl, index);
if (!opp)
return -ENODEV;
*freq = opp->perf * dom->mult_factor;
} else {
opp = xa_load(&dom->opps_by_idx, index);
if (!opp)
return -ENODEV;
*freq = opp->indicative_freq * dom->mult_factor;
}
return 0;
}
static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
u8 evt_id, ktime_t timestamp,
const void *payld, size_t payld_sz,
void *report, u32 *src_id)
{
int ret;
void *rep = NULL;
struct perf_dom_info *dom;
switch (evt_id) {
case SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED:
{
const struct scmi_perf_limits_notify_payld *p = payld;
struct scmi_perf_limits_report *r = report;
unsigned long freq_min, freq_max;
if (sizeof(*p) != payld_sz)
break;
@ -1076,14 +1105,36 @@ static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
r->domain_id = le32_to_cpu(p->domain_id);
r->range_max = le32_to_cpu(p->range_max);
r->range_min = le32_to_cpu(p->range_min);
/* Check if the reported domain exist at all */
dom = scmi_perf_domain_lookup(ph, r->domain_id);
if (IS_ERR(dom))
break;
/*
* Event will be reported from this point on...
* ...even if, later, xlated frequencies were not retrieved.
*/
*src_id = r->domain_id;
rep = r;
ret = scmi_perf_xlate_opp_to_freq(dom, r->range_max, &freq_max);
if (ret)
break;
ret = scmi_perf_xlate_opp_to_freq(dom, r->range_min, &freq_min);
if (ret)
break;
/* Report translated freqs ONLY if both available */
r->range_max_freq = freq_max;
r->range_min_freq = freq_min;
break;
}
case SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED:
{
const struct scmi_perf_level_notify_payld *p = payld;
struct scmi_perf_level_report *r = report;
unsigned long freq;
if (sizeof(*p) != payld_sz)
break;
@ -1091,9 +1142,27 @@ static void *scmi_perf_fill_custom_report(const struct scmi_protocol_handle *ph,
r->timestamp = timestamp;
r->agent_id = le32_to_cpu(p->agent_id);
r->domain_id = le32_to_cpu(p->domain_id);
/* Report translated freqs ONLY if available */
r->performance_level = le32_to_cpu(p->performance_level);
/* Check if the reported domain exist at all */
dom = scmi_perf_domain_lookup(ph, r->domain_id);
if (IS_ERR(dom))
break;
/*
* Event will be reported from this point on...
* ...even if, later, xlated frequencies were not retrieved.
*/
*src_id = r->domain_id;
rep = r;
/* Report translated freqs ONLY if available */
ret = scmi_perf_xlate_opp_to_freq(dom, r->performance_level,
&freq);
if (ret)
break;
r->performance_level_freq = freq;
break;
}
default:

3
include/linux/scmi_protocol.h
View file

@ -956,6 +956,8 @@ struct scmi_perf_limits_report {
unsigned int domain_id;
unsigned int range_max;
unsigned int range_min;
unsigned long range_max_freq;
unsigned long range_min_freq;
};
struct scmi_perf_level_report {
@ -963,6 +965,7 @@ struct scmi_perf_level_report {
unsigned int agent_id;
unsigned int domain_id;
unsigned int performance_level;
unsigned long performance_level_freq;
};
struct scmi_sensor_trip_point_report {