*
* GPL LICENSE SUMMARY
*
- * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
*
* BSD LICENSE
*
- * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
+ * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
#include "fw-api.h"
#include "mvm.h"
+#define QUOTA_100 IWL_MVM_MAX_QUOTA
+#define QUOTA_LOWLAT_MIN ((QUOTA_100 * IWL_MVM_LOWLAT_QUOTA_MIN_PERCENT) / 100)
+
struct iwl_mvm_quota_iterator_data {
int n_interfaces[MAX_BINDINGS];
int colors[MAX_BINDINGS];
+ int low_latency[MAX_BINDINGS];
+ int n_low_latency_bindings;
struct ieee80211_vif *new_vif;
};
switch (vif->type) {
case NL80211_IFTYPE_STATION:
if (vif->bss_conf.assoc)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_AP:
case NL80211_IFTYPE_ADHOC:
if (mvmvif->ap_ibss_active)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_MONITOR:
if (mvmvif->monitor_active)
- data->n_interfaces[id]++;
- break;
+ break;
+ return;
case NL80211_IFTYPE_P2P_DEVICE:
- break;
+ return;
default:
WARN_ON_ONCE(1);
- break;
+ return;
+ }
+
+ data->n_interfaces[id]++;
+
+ if (iwl_mvm_vif_low_latency(mvmvif) && !data->low_latency[id]) {
+ data->n_low_latency_bindings++;
+ data->low_latency[id] = true;
}
}
int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
{
struct iwl_time_quota_cmd cmd = {};
- int i, idx, ret, num_active_macs, quota, quota_rem;
+ int i, idx, ret, num_active_macs, quota, quota_rem, n_non_lowlat;
struct iwl_mvm_quota_iterator_data data = {
.n_interfaces = {},
.colors = { -1, -1, -1, -1 },
.new_vif = newvif,
};
+ u32 ll_max_duration;
lockdep_assert_held(&mvm->mutex);
iwl_mvm_quota_iterator(&data, newvif->addr, newvif);
}
+ switch (data.n_low_latency_bindings) {
+ case 0: /* no low latency - use default */
+ ll_max_duration = 0;
+ break;
+ case 1: /* SingleBindingLowLatencyMode */
+ ll_max_duration = IWL_MVM_LOWLAT_SINGLE_BINDING_MAXDUR;
+ break;
+ case 2: /* DualBindingLowLatencyMode */
+ ll_max_duration = IWL_MVM_LOWLAT_DUAL_BINDING_MAXDUR;
+ break;
+ default: /* MultiBindingLowLatencyMode */
+ ll_max_duration = 0;
+ break;
+ }
+
/*
* The FW's scheduling session consists of
* IWL_MVM_MAX_QUOTA fragments. Divide these fragments
num_active_macs += data.n_interfaces[i];
}
- quota = 0;
- quota_rem = 0;
- if (num_active_macs) {
- quota = IWL_MVM_MAX_QUOTA / num_active_macs;
- quota_rem = IWL_MVM_MAX_QUOTA % num_active_macs;
+ n_non_lowlat = num_active_macs;
+
+ if (data.n_low_latency_bindings == 1) {
+ for (i = 0; i < MAX_BINDINGS; i++) {
+ if (data.low_latency[i]) {
+ n_non_lowlat -= data.n_interfaces[i];
+ break;
+ }
+ }
+ if (n_non_lowlat) {
+ quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
+ quota_rem = QUOTA_100 - n_non_lowlat * quota -
+ QUOTA_LOWLAT_MIN;
+ } else {
+ quota = QUOTA_100;
+ quota_rem = 0;
+ }
+ } else if (num_active_macs) {
+ quota = QUOTA_100 / num_active_macs;
+ quota_rem = QUOTA_100 % num_active_macs;
+ } else {
+ /* values don't really matter - won't be used */
+ quota = 0;
+ quota_rem = 0;
}
for (idx = 0, i = 0; i < MAX_BINDINGS; i++) {
cmd.quotas[idx].id_and_color =
cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
- if (data.n_interfaces[i] <= 0) {
+ if (data.n_interfaces[i] <= 0)
cmd.quotas[idx].quota = cpu_to_le32(0);
- cmd.quotas[idx].max_duration = cpu_to_le32(0);
- } else {
+ else if (data.n_low_latency_bindings == 1 && n_non_lowlat &&
+ data.low_latency[i])
+ cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
+ else
cmd.quotas[idx].quota =
cpu_to_le32(quota * data.n_interfaces[i]);
+
+ if (data.n_interfaces[i] && !data.low_latency[i])
+ cmd.quotas[idx].max_duration =
+ cpu_to_le32(ll_max_duration);
+ else
cmd.quotas[idx].max_duration = cpu_to_le32(0);
- }
+
idx++;
}
- /* Give the remainder of the session to the first binding */
- le32_add_cpu(&cmd.quotas[0].quota, quota_rem);
+ /* Give the remainder of the session to the first data binding */
+ for (i = 0; i < MAX_BINDINGS; i++) {
+ if (le32_to_cpu(cmd.quotas[i].quota) != 0) {
+ le32_add_cpu(&cmd.quotas[i].quota, quota_rem);
+ break;
+ }
+ }
iwl_mvm_adjust_quota_for_noa(mvm, &cmd);