360 lines
11 KiB
C
360 lines
11 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* This file is provided under a dual BSD/GPLv2 license. When using or
|
||
|
|
* redistributing this file, you may do so under either license.
|
||
|
|
*
|
||
|
|
* GPL LICENSE SUMMARY
|
||
|
|
*
|
||
|
|
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
|
||
|
|
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
|
||
|
|
* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful, but
|
||
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
|
|
* General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
|
||
|
|
* USA
|
||
|
|
*
|
||
|
|
* The full GNU General Public License is included in this distribution
|
||
|
|
* in the file called COPYING.
|
||
|
|
*
|
||
|
|
* Contact Information:
|
||
|
|
* Intel Linux Wireless <linuxwifi@intel.com>
|
||
|
|
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
|
||
|
|
*
|
||
|
|
* BSD LICENSE
|
||
|
|
*
|
||
|
|
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
|
||
|
|
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
|
||
|
|
* Copyright(c) 2016 - 2017 Intel Deutschland GmbH
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
*
|
||
|
|
* * Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* * Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in
|
||
|
|
* the documentation and/or other materials provided with the
|
||
|
|
* distribution.
|
||
|
|
* * Neither the name Intel Corporation nor the names of its
|
||
|
|
* contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
#include <net/mac80211.h>
|
||
|
|
#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];
|
||
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
||
|
|
int dbgfs_min[MAX_BINDINGS];
|
||
|
|
#endif
|
||
|
|
int n_low_latency_bindings;
|
||
|
|
struct ieee80211_vif *disabled_vif;
|
||
|
|
};
|
||
|
|
|
||
|
|
static void iwl_mvm_quota_iterator(void *_data, u8 *mac,
|
||
|
|
struct ieee80211_vif *vif)
|
||
|
|
{
|
||
|
|
struct iwl_mvm_quota_iterator_data *data = _data;
|
||
|
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
|
||
|
|
u16 id;
|
||
|
|
|
||
|
|
/* skip disabled interfaces here immediately */
|
||
|
|
if (vif == data->disabled_vif)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (!mvmvif->phy_ctxt)
|
||
|
|
return;
|
||
|
|
|
||
|
|
/* currently, PHY ID == binding ID */
|
||
|
|
id = mvmvif->phy_ctxt->id;
|
||
|
|
|
||
|
|
/* need at least one binding per PHY */
|
||
|
|
BUILD_BUG_ON(NUM_PHY_CTX > MAX_BINDINGS);
|
||
|
|
|
||
|
|
if (WARN_ON_ONCE(id >= MAX_BINDINGS))
|
||
|
|
return;
|
||
|
|
|
||
|
|
switch (vif->type) {
|
||
|
|
case NL80211_IFTYPE_STATION:
|
||
|
|
if (vif->bss_conf.assoc)
|
||
|
|
break;
|
||
|
|
return;
|
||
|
|
case NL80211_IFTYPE_AP:
|
||
|
|
case NL80211_IFTYPE_ADHOC:
|
||
|
|
if (mvmvif->ap_ibss_active)
|
||
|
|
break;
|
||
|
|
return;
|
||
|
|
case NL80211_IFTYPE_MONITOR:
|
||
|
|
if (mvmvif->monitor_active)
|
||
|
|
break;
|
||
|
|
return;
|
||
|
|
case NL80211_IFTYPE_P2P_DEVICE:
|
||
|
|
return;
|
||
|
|
default:
|
||
|
|
WARN_ON_ONCE(1);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (data->colors[id] < 0)
|
||
|
|
data->colors[id] = mvmvif->phy_ctxt->color;
|
||
|
|
else
|
||
|
|
WARN_ON_ONCE(data->colors[id] != mvmvif->phy_ctxt->color);
|
||
|
|
|
||
|
|
data->n_interfaces[id]++;
|
||
|
|
|
||
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
||
|
|
if (mvmvif->dbgfs_quota_min)
|
||
|
|
data->dbgfs_min[id] = max(data->dbgfs_min[id],
|
||
|
|
mvmvif->dbgfs_quota_min);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (iwl_mvm_vif_low_latency(mvmvif) && !data->low_latency[id]) {
|
||
|
|
data->n_low_latency_bindings++;
|
||
|
|
data->low_latency[id] = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void iwl_mvm_adjust_quota_for_noa(struct iwl_mvm *mvm,
|
||
|
|
struct iwl_time_quota_cmd *cmd)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_NL80211_TESTMODE
|
||
|
|
struct iwl_mvm_vif *mvmvif;
|
||
|
|
int i, phy_id = -1, beacon_int = 0;
|
||
|
|
|
||
|
|
if (!mvm->noa_duration || !mvm->noa_vif)
|
||
|
|
return;
|
||
|
|
|
||
|
|
mvmvif = iwl_mvm_vif_from_mac80211(mvm->noa_vif);
|
||
|
|
if (!mvmvif->ap_ibss_active)
|
||
|
|
return;
|
||
|
|
|
||
|
|
phy_id = mvmvif->phy_ctxt->id;
|
||
|
|
beacon_int = mvm->noa_vif->bss_conf.beacon_int;
|
||
|
|
|
||
|
|
for (i = 0; i < MAX_BINDINGS; i++) {
|
||
|
|
struct iwl_time_quota_data *data =
|
||
|
|
iwl_mvm_quota_cmd_get_quota(mvm, cmd,
|
||
|
|
i);
|
||
|
|
u32 id_n_c = le32_to_cpu(data->id_and_color);
|
||
|
|
u32 id = (id_n_c & FW_CTXT_ID_MSK) >> FW_CTXT_ID_POS;
|
||
|
|
u32 quota = le32_to_cpu(data->quota);
|
||
|
|
|
||
|
|
if (id != phy_id)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
quota *= (beacon_int - mvm->noa_duration);
|
||
|
|
quota /= beacon_int;
|
||
|
|
|
||
|
|
IWL_DEBUG_QUOTA(mvm, "quota: adjust for NoA from %d to %d\n",
|
||
|
|
le32_to_cpu(data->quota), quota);
|
||
|
|
|
||
|
|
data->quota = cpu_to_le32(quota);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
int iwl_mvm_update_quotas(struct iwl_mvm *mvm,
|
||
|
|
bool force_update,
|
||
|
|
struct ieee80211_vif *disabled_vif)
|
||
|
|
{
|
||
|
|
struct iwl_time_quota_cmd cmd = {};
|
||
|
|
int i, idx, err, num_active_macs, quota, quota_rem, n_non_lowlat;
|
||
|
|
struct iwl_mvm_quota_iterator_data data = {
|
||
|
|
.n_interfaces = {},
|
||
|
|
.colors = { -1, -1, -1, -1 },
|
||
|
|
.disabled_vif = disabled_vif,
|
||
|
|
};
|
||
|
|
struct iwl_time_quota_cmd *last = &mvm->last_quota_cmd;
|
||
|
|
struct iwl_time_quota_data *qdata, *last_data;
|
||
|
|
bool send = false;
|
||
|
|
|
||
|
|
lockdep_assert_held(&mvm->mutex);
|
||
|
|
|
||
|
|
if (fw_has_capa(&mvm->fw->ucode_capa,
|
||
|
|
IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* update all upon completion */
|
||
|
|
if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* iterator data above must match */
|
||
|
|
BUILD_BUG_ON(MAX_BINDINGS != 4);
|
||
|
|
|
||
|
|
ieee80211_iterate_active_interfaces_atomic(
|
||
|
|
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
|
||
|
|
iwl_mvm_quota_iterator, &data);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The FW's scheduling session consists of
|
||
|
|
* IWL_MVM_MAX_QUOTA fragments. Divide these fragments
|
||
|
|
* equally between all the bindings that require quota
|
||
|
|
*/
|
||
|
|
num_active_macs = 0;
|
||
|
|
for (i = 0; i < MAX_BINDINGS; i++) {
|
||
|
|
qdata = iwl_mvm_quota_cmd_get_quota(mvm, &cmd, i);
|
||
|
|
qdata->id_and_color = cpu_to_le32(FW_CTXT_INVALID);
|
||
|
|
num_active_macs += data.n_interfaces[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
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 (data.n_low_latency_bindings == 1 && n_non_lowlat) {
|
||
|
|
/*
|
||
|
|
* Reserve quota for the low latency binding in case that
|
||
|
|
* there are several data bindings but only a single
|
||
|
|
* low latency one. Split the rest of the quota equally
|
||
|
|
* between the other data interfaces.
|
||
|
|
*/
|
||
|
|
quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
|
||
|
|
quota_rem = QUOTA_100 - n_non_lowlat * quota -
|
||
|
|
QUOTA_LOWLAT_MIN;
|
||
|
|
IWL_DEBUG_QUOTA(mvm,
|
||
|
|
"quota: low-latency binding active, remaining quota per other binding: %d\n",
|
||
|
|
quota);
|
||
|
|
} else if (num_active_macs) {
|
||
|
|
/*
|
||
|
|
* There are 0 or more than 1 low latency bindings, or all the
|
||
|
|
* data interfaces belong to the single low latency binding.
|
||
|
|
* Split the quota equally between the data interfaces.
|
||
|
|
*/
|
||
|
|
quota = QUOTA_100 / num_active_macs;
|
||
|
|
quota_rem = QUOTA_100 % num_active_macs;
|
||
|
|
IWL_DEBUG_QUOTA(mvm,
|
||
|
|
"quota: splitting evenly per binding: %d\n",
|
||
|
|
quota);
|
||
|
|
} else {
|
||
|
|
/* values don't really matter - won't be used */
|
||
|
|
quota = 0;
|
||
|
|
quota_rem = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (idx = 0, i = 0; i < MAX_BINDINGS; i++) {
|
||
|
|
if (data.colors[i] < 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
qdata = iwl_mvm_quota_cmd_get_quota(mvm, &cmd, idx);
|
||
|
|
|
||
|
|
qdata->id_and_color =
|
||
|
|
cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
|
||
|
|
|
||
|
|
if (data.n_interfaces[i] <= 0)
|
||
|
|
qdata->quota = cpu_to_le32(0);
|
||
|
|
#ifdef CONFIG_IWLWIFI_DEBUGFS
|
||
|
|
else if (data.dbgfs_min[i])
|
||
|
|
qdata->quota =
|
||
|
|
cpu_to_le32(data.dbgfs_min[i] * QUOTA_100 / 100);
|
||
|
|
#endif
|
||
|
|
else if (data.n_low_latency_bindings == 1 && n_non_lowlat &&
|
||
|
|
data.low_latency[i])
|
||
|
|
/*
|
||
|
|
* There is more than one binding, but only one of the
|
||
|
|
* bindings is in low latency. For this case, allocate
|
||
|
|
* the minimal required quota for the low latency
|
||
|
|
* binding.
|
||
|
|
*/
|
||
|
|
qdata->quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
|
||
|
|
else
|
||
|
|
qdata->quota =
|
||
|
|
cpu_to_le32(quota * data.n_interfaces[i]);
|
||
|
|
|
||
|
|
WARN_ONCE(le32_to_cpu(qdata->quota) > QUOTA_100,
|
||
|
|
"Binding=%d, quota=%u > max=%u\n",
|
||
|
|
idx, le32_to_cpu(qdata->quota), QUOTA_100);
|
||
|
|
|
||
|
|
qdata->max_duration = cpu_to_le32(0);
|
||
|
|
|
||
|
|
idx++;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Give the remainder of the session to the first data binding */
|
||
|
|
for (i = 0; i < MAX_BINDINGS; i++) {
|
||
|
|
qdata = iwl_mvm_quota_cmd_get_quota(mvm, &cmd, i);
|
||
|
|
if (le32_to_cpu(qdata->quota) != 0) {
|
||
|
|
le32_add_cpu(&qdata->quota, quota_rem);
|
||
|
|
IWL_DEBUG_QUOTA(mvm,
|
||
|
|
"quota: giving remainder of %d to binding %d\n",
|
||
|
|
quota_rem, i);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
iwl_mvm_adjust_quota_for_noa(mvm, &cmd);
|
||
|
|
|
||
|
|
/* check that we have non-zero quota for all valid bindings */
|
||
|
|
for (i = 0; i < MAX_BINDINGS; i++) {
|
||
|
|
qdata = iwl_mvm_quota_cmd_get_quota(mvm, &cmd, i);
|
||
|
|
last_data = iwl_mvm_quota_cmd_get_quota(mvm, last, i);
|
||
|
|
if (qdata->id_and_color != last_data->id_and_color)
|
||
|
|
send = true;
|
||
|
|
if (qdata->max_duration != last_data->max_duration)
|
||
|
|
send = true;
|
||
|
|
if (abs((int)le32_to_cpu(qdata->quota) -
|
||
|
|
(int)le32_to_cpu(last_data->quota))
|
||
|
|
> IWL_MVM_QUOTA_THRESHOLD)
|
||
|
|
send = true;
|
||
|
|
if (qdata->id_and_color == cpu_to_le32(FW_CTXT_INVALID))
|
||
|
|
continue;
|
||
|
|
WARN_ONCE(qdata->quota == 0,
|
||
|
|
"zero quota on binding %d\n", i);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!send && !force_update) {
|
||
|
|
/* don't send a practically unchanged command, the firmware has
|
||
|
|
* to re-initialize a lot of state and that can have an adverse
|
||
|
|
* impact on it
|
||
|
|
*/
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
err = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
|
||
|
|
iwl_mvm_quota_cmd_size(mvm), &cmd);
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
IWL_ERR(mvm, "Failed to send quota: %d\n", err);
|
||
|
|
else
|
||
|
|
mvm->last_quota_cmd = cmd;
|
||
|
|
return err;
|
||
|
|
}
|