Commit 02819953 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Georgi Djakov

interconnect: qcom: rpm: Add support for specifying channel num

Some nodes, like EBI0 (DDR) or L3/LLCC, may be connected over more than
one channel. This should be taken into account in bandwidth calcualtion,
as we're supposed to feed msmbus with the per-channel bandwidth. Add
support for specifying that and use it during bandwidth aggregation.
Reviewed-by: default avatarBryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20230228-topic-qos-v7-2-815606092fff@linaro.orgSigned-off-by: default avatarGeorgi Djakov <djakov@kernel.org>
parent 1d779317
......@@ -316,6 +316,7 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider,
{
struct icc_node *node;
struct qcom_icc_node *qn;
u64 sum_avg[QCOM_ICC_NUM_BUCKETS];
int i;
/* Initialise aggregate values */
......@@ -333,7 +334,11 @@ static void qcom_icc_bus_aggregate(struct icc_provider *provider,
list_for_each_entry(node, &provider->nodes, node_list) {
qn = node->data;
for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
agg_avg[i] += qn->sum_avg[i];
if (qn->channels)
sum_avg[i] = div_u64(qn->sum_avg[i], qn->channels);
else
sum_avg[i] = qn->sum_avg[i];
agg_avg[i] += sum_avg[i];
agg_peak[i] = max_t(u64, agg_peak[i], qn->max_peak[i]);
}
}
......
......@@ -66,6 +66,7 @@ struct qcom_icc_qos {
* @id: a unique node identifier
* @links: an array of nodes where we can go next while traversing
* @num_links: the total number of @links
* @channels: number of channels at this node (e.g. DDR channels)
* @buswidth: width of the interconnect between a node and the bus (bytes)
* @sum_avg: current sum aggregate value of all avg bw requests
* @max_peak: current max aggregate value of all peak bw requests
......@@ -78,6 +79,7 @@ struct qcom_icc_node {
u16 id;
const u16 *links;
u16 num_links;
u16 channels;
u16 buswidth;
u64 sum_avg[QCOM_ICC_NUM_BUCKETS];
u64 max_peak[QCOM_ICC_NUM_BUCKETS];
......
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