+++ /dev/null
-/******************************************************************************
- *
- * 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
- *
- * 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 <ilw@linux.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
- * 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];
- 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]++;
-
- 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++) {
- u32 id_n_c = le32_to_cpu(cmd->quotas[i].id_and_color);
- u32 id = (id_n_c & FW_CTXT_ID_MSK) >> FW_CTXT_ID_POS;
- u32 quota = le32_to_cpu(cmd->quotas[i].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(cmd->quotas[i].quota), quota);
-
- cmd->quotas[i].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;
- bool send = false;
-
- lockdep_assert_held(&mvm->mutex);
-
- /* 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++) {
- cmd.quotas[i].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;
-
- cmd.quotas[idx].id_and_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(i, data.colors[i]));
-
- if (data.n_interfaces[i] <= 0)
- cmd.quotas[idx].quota = cpu_to_le32(0);
- 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.
- */
- cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
- else
- cmd.quotas[idx].quota =
- cpu_to_le32(quota * data.n_interfaces[i]);
-
- WARN_ONCE(le32_to_cpu(cmd.quotas[idx].quota) > QUOTA_100,
- "Binding=%d, quota=%u > max=%u\n",
- idx, le32_to_cpu(cmd.quotas[idx].quota), QUOTA_100);
-
- cmd.quotas[idx].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++) {
- if (le32_to_cpu(cmd.quotas[i].quota) != 0) {
- le32_add_cpu(&cmd.quotas[i].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++) {
- if (cmd.quotas[i].id_and_color != last->quotas[i].id_and_color)
- send = true;
- if (cmd.quotas[i].max_duration != last->quotas[i].max_duration)
- send = true;
- if (abs((int)le32_to_cpu(cmd.quotas[i].quota) -
- (int)le32_to_cpu(last->quotas[i].quota))
- > IWL_MVM_QUOTA_THRESHOLD)
- send = true;
- if (cmd.quotas[i].id_and_color == cpu_to_le32(FW_CTXT_INVALID))
- continue;
- WARN_ONCE(cmd.quotas[i].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, sizeof(cmd), &cmd);
-
- if (err)
- IWL_ERR(mvm, "Failed to send quota: %d\n", err);
- else
- mvm->last_quota_cmd = cmd;
- return err;
-}
projects / cascardo / linux.git / blobdiff