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OpenCloudOS-Kernel/drivers/net/wireless/ath/ath10k/wow.c

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/*
* Copyright (c) 2015-2017 Qualcomm Atheros, Inc.
* Copyright (c) 2018, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "mac.h"
#include <net/mac80211.h>
#include "hif.h"
#include "core.h"
#include "debug.h"
#include "wmi.h"
#include "wmi-ops.h"
static const struct wiphy_wowlan_support ath10k_wowlan_support = {
.flags = WIPHY_WOWLAN_DISCONNECT |
WIPHY_WOWLAN_MAGIC_PKT,
.pattern_min_len = WOW_MIN_PATTERN_SIZE,
.pattern_max_len = WOW_MAX_PATTERN_SIZE,
.max_pkt_offset = WOW_MAX_PKT_OFFSET,
};
static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
{
struct ath10k *ar = arvif->ar;
int i, ret;
for (i = 0; i < WOW_EVENT_MAX; i++) {
ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
if (ret) {
ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
wow_wakeup_event(i), arvif->vdev_id, ret);
return ret;
}
}
for (i = 0; i < ar->wow.max_num_patterns; i++) {
ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
if (ret) {
ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
i, arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
static int ath10k_wow_cleanup(struct ath10k *ar)
{
struct ath10k_vif *arvif;
int ret;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
ret = ath10k_wow_vif_cleanup(arvif);
if (ret) {
ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
/**
* Convert a 802.3 format to a 802.11 format.
* +------------+-----------+--------+----------------+
* 802.3: |dest mac(6B)|src mac(6B)|type(2B)| body... |
* +------------+-----------+--------+----------------+
* |__ |_______ |____________ |________
* | | | |
* +--+------------+----+-----------+---------------+-----------+
* 802.11: |4B|dest mac(6B)| 6B |src mac(6B)| 8B |type(2B)| body... |
* +--+------------+----+-----------+---------------+-----------+
*/
static void ath10k_wow_convert_8023_to_80211
(struct cfg80211_pkt_pattern *new,
const struct cfg80211_pkt_pattern *old)
{
u8 hdr_8023_pattern[ETH_HLEN] = {};
u8 hdr_8023_bit_mask[ETH_HLEN] = {};
u8 hdr_80211_pattern[WOW_HDR_LEN] = {};
u8 hdr_80211_bit_mask[WOW_HDR_LEN] = {};
int total_len = old->pkt_offset + old->pattern_len;
int hdr_80211_end_offset;
struct ieee80211_hdr_3addr *new_hdr_pattern =
(struct ieee80211_hdr_3addr *)hdr_80211_pattern;
struct ieee80211_hdr_3addr *new_hdr_mask =
(struct ieee80211_hdr_3addr *)hdr_80211_bit_mask;
struct ethhdr *old_hdr_pattern = (struct ethhdr *)hdr_8023_pattern;
struct ethhdr *old_hdr_mask = (struct ethhdr *)hdr_8023_bit_mask;
int hdr_len = sizeof(*new_hdr_pattern);
struct rfc1042_hdr *new_rfc_pattern =
(struct rfc1042_hdr *)(hdr_80211_pattern + hdr_len);
struct rfc1042_hdr *new_rfc_mask =
(struct rfc1042_hdr *)(hdr_80211_bit_mask + hdr_len);
int rfc_len = sizeof(*new_rfc_pattern);
memcpy(hdr_8023_pattern + old->pkt_offset,
old->pattern, ETH_HLEN - old->pkt_offset);
memcpy(hdr_8023_bit_mask + old->pkt_offset,
old->mask, ETH_HLEN - old->pkt_offset);
/* Copy destination address */
memcpy(new_hdr_pattern->addr1, old_hdr_pattern->h_dest, ETH_ALEN);
memcpy(new_hdr_mask->addr1, old_hdr_mask->h_dest, ETH_ALEN);
/* Copy source address */
memcpy(new_hdr_pattern->addr3, old_hdr_pattern->h_source, ETH_ALEN);
memcpy(new_hdr_mask->addr3, old_hdr_mask->h_source, ETH_ALEN);
/* Copy logic link type */
memcpy(&new_rfc_pattern->snap_type,
&old_hdr_pattern->h_proto,
sizeof(old_hdr_pattern->h_proto));
memcpy(&new_rfc_mask->snap_type,
&old_hdr_mask->h_proto,
sizeof(old_hdr_mask->h_proto));
/* Calculate new pkt_offset */
if (old->pkt_offset < ETH_ALEN)
new->pkt_offset = old->pkt_offset +
offsetof(struct ieee80211_hdr_3addr, addr1);
else if (old->pkt_offset < offsetof(struct ethhdr, h_proto))
new->pkt_offset = old->pkt_offset +
offsetof(struct ieee80211_hdr_3addr, addr3) -
offsetof(struct ethhdr, h_source);
else
new->pkt_offset = old->pkt_offset + hdr_len + rfc_len - ETH_HLEN;
/* Calculate new hdr end offset */
if (total_len > ETH_HLEN)
hdr_80211_end_offset = hdr_len + rfc_len;
else if (total_len > offsetof(struct ethhdr, h_proto))
hdr_80211_end_offset = hdr_len + rfc_len + total_len - ETH_HLEN;
else if (total_len > ETH_ALEN)
hdr_80211_end_offset = total_len - ETH_ALEN +
offsetof(struct ieee80211_hdr_3addr, addr3);
else
hdr_80211_end_offset = total_len +
offsetof(struct ieee80211_hdr_3addr, addr1);
new->pattern_len = hdr_80211_end_offset - new->pkt_offset;
memcpy((u8 *)new->pattern,
hdr_80211_pattern + new->pkt_offset,
new->pattern_len);
memcpy((u8 *)new->mask,
hdr_80211_bit_mask + new->pkt_offset,
new->pattern_len);
if (total_len > ETH_HLEN) {
/* Copy frame body */
memcpy((u8 *)new->pattern + new->pattern_len,
(void *)old->pattern + ETH_HLEN - old->pkt_offset,
total_len - ETH_HLEN);
memcpy((u8 *)new->mask + new->pattern_len,
(void *)old->mask + ETH_HLEN - old->pkt_offset,
total_len - ETH_HLEN);
new->pattern_len += total_len - ETH_HLEN;
}
}
static int ath10k_wmi_pno_check(struct ath10k *ar, u32 vdev_id,
struct cfg80211_sched_scan_request *nd_config,
struct wmi_pno_scan_req *pno)
{
int i, j, ret = 0;
u8 ssid_len;
pno->enable = 1;
pno->vdev_id = vdev_id;
pno->uc_networks_count = nd_config->n_match_sets;
if (!pno->uc_networks_count ||
pno->uc_networks_count > WMI_PNO_MAX_SUPP_NETWORKS)
return -EINVAL;
if (nd_config->n_channels > WMI_PNO_MAX_NETW_CHANNELS_EX)
return -EINVAL;
/* Filling per profile params */
for (i = 0; i < pno->uc_networks_count; i++) {
ssid_len = nd_config->match_sets[i].ssid.ssid_len;
if (ssid_len == 0 || ssid_len > 32)
return -EINVAL;
pno->a_networks[i].ssid.ssid_len = __cpu_to_le32(ssid_len);
memcpy(pno->a_networks[i].ssid.ssid,
nd_config->match_sets[i].ssid.ssid,
nd_config->match_sets[i].ssid.ssid_len);
pno->a_networks[i].authentication = 0;
pno->a_networks[i].encryption = 0;
pno->a_networks[i].bcast_nw_type = 0;
/*Copying list of valid channel into request */
pno->a_networks[i].channel_count = nd_config->n_channels;
pno->a_networks[i].rssi_threshold = nd_config->match_sets[i].rssi_thold;
for (j = 0; j < nd_config->n_channels; j++) {
pno->a_networks[i].channels[j] =
nd_config->channels[j]->center_freq;
}
}
/* set scan to passive if no SSIDs are specified in the request */
if (nd_config->n_ssids == 0)
pno->do_passive_scan = true;
else
pno->do_passive_scan = false;
for (i = 0; i < nd_config->n_ssids; i++) {
j = 0;
while (j < pno->uc_networks_count) {
if (__le32_to_cpu(pno->a_networks[j].ssid.ssid_len) ==
nd_config->ssids[i].ssid_len &&
(memcmp(pno->a_networks[j].ssid.ssid,
nd_config->ssids[i].ssid,
__le32_to_cpu(pno->a_networks[j].ssid.ssid_len)) == 0)) {
pno->a_networks[j].bcast_nw_type = BCAST_HIDDEN;
break;
}
j++;
}
}
if (nd_config->n_scan_plans == 2) {
pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
pno->fast_scan_max_cycles = nd_config->scan_plans[0].iterations;
pno->slow_scan_period =
nd_config->scan_plans[1].interval * MSEC_PER_SEC;
} else if (nd_config->n_scan_plans == 1) {
pno->fast_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
pno->fast_scan_max_cycles = 1;
pno->slow_scan_period = nd_config->scan_plans[0].interval * MSEC_PER_SEC;
} else {
ath10k_warn(ar, "Invalid number of scan plans %d !!",
nd_config->n_scan_plans);
}
if (nd_config->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
/* enable mac randomization */
pno->enable_pno_scan_randomization = 1;
memcpy(pno->mac_addr, nd_config->mac_addr, ETH_ALEN);
memcpy(pno->mac_addr_mask, nd_config->mac_addr_mask, ETH_ALEN);
}
pno->delay_start_time = nd_config->delay;
/* Current FW does not support min-max range for dwell time */
pno->active_max_time = WMI_ACTIVE_MAX_CHANNEL_TIME;
pno->passive_max_time = WMI_PASSIVE_MAX_CHANNEL_TIME;
return ret;
}
static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
struct cfg80211_wowlan *wowlan)
{
int ret, i;
unsigned long wow_mask = 0;
struct ath10k *ar = arvif->ar;
const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
int pattern_id = 0;
/* Setup requested WOW features */
switch (arvif->vdev_type) {
case WMI_VDEV_TYPE_IBSS:
__set_bit(WOW_BEACON_EVENT, &wow_mask);
/* fall through */
case WMI_VDEV_TYPE_AP:
__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
__set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
__set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
__set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
__set_bit(WOW_HTT_EVENT, &wow_mask);
__set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
break;
case WMI_VDEV_TYPE_STA:
if (wowlan->disconnect) {
__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
__set_bit(WOW_BMISS_EVENT, &wow_mask);
__set_bit(WOW_CSA_IE_EVENT, &wow_mask);
}
if (wowlan->magic_pkt)
__set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
if (wowlan->nd_config) {
struct wmi_pno_scan_req *pno;
int ret;
pno = kzalloc(sizeof(*pno), GFP_KERNEL);
if (!pno)
return -ENOMEM;
ar->nlo_enabled = true;
ret = ath10k_wmi_pno_check(ar, arvif->vdev_id,
wowlan->nd_config, pno);
if (!ret) {
ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
__set_bit(WOW_NLO_DETECTED_EVENT, &wow_mask);
}
kfree(pno);
}
break;
default:
break;
}
for (i = 0; i < wowlan->n_patterns; i++) {
u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
u8 ath_pattern[WOW_MAX_PATTERN_SIZE] = {};
u8 ath_bitmask[WOW_MAX_PATTERN_SIZE] = {};
struct cfg80211_pkt_pattern new_pattern = {};
struct cfg80211_pkt_pattern old_pattern = patterns[i];
int j;
new_pattern.pattern = ath_pattern;
new_pattern.mask = ath_bitmask;
if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
continue;
/* convert bytemask to bitmask */
for (j = 0; j < patterns[i].pattern_len; j++)
if (patterns[i].mask[j / 8] & BIT(j % 8))
bitmask[j] = 0xff;
old_pattern.mask = bitmask;
new_pattern = old_pattern;
if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
if (patterns[i].pkt_offset < ETH_HLEN)
ath10k_wow_convert_8023_to_80211(&new_pattern,
&old_pattern);
else
new_pattern.pkt_offset += WOW_HDR_LEN - ETH_HLEN;
}
if (WARN_ON(new_pattern.pattern_len > WOW_MAX_PATTERN_SIZE))
return -EINVAL;
ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
pattern_id,
new_pattern.pattern,
new_pattern.mask,
new_pattern.pattern_len,
new_pattern.pkt_offset);
if (ret) {
ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
pattern_id,
arvif->vdev_id, ret);
return ret;
}
pattern_id++;
__set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
}
for (i = 0; i < WOW_EVENT_MAX; i++) {
if (!test_bit(i, &wow_mask))
continue;
ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
if (ret) {
ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
wow_wakeup_event(i), arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
static int ath10k_wow_set_wakeups(struct ath10k *ar,
struct cfg80211_wowlan *wowlan)
{
struct ath10k_vif *arvif;
int ret;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
if (ret) {
ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
static int ath10k_vif_wow_clean_nlo(struct ath10k_vif *arvif)
{
int ret = 0;
struct ath10k *ar = arvif->ar;
switch (arvif->vdev_type) {
case WMI_VDEV_TYPE_STA:
if (ar->nlo_enabled) {
struct wmi_pno_scan_req *pno;
pno = kzalloc(sizeof(*pno), GFP_KERNEL);
if (!pno)
return -ENOMEM;
pno->enable = 0;
ar->nlo_enabled = false;
ret = ath10k_wmi_wow_config_pno(ar, arvif->vdev_id, pno);
kfree(pno);
}
break;
default:
break;
}
return ret;
}
static int ath10k_wow_nlo_cleanup(struct ath10k *ar)
{
struct ath10k_vif *arvif;
int ret = 0;
lockdep_assert_held(&ar->conf_mutex);
list_for_each_entry(arvif, &ar->arvifs, list) {
ret = ath10k_vif_wow_clean_nlo(arvif);
if (ret) {
ath10k_warn(ar, "failed to clean nlo settings on vdev %i: %d\n",
arvif->vdev_id, ret);
return ret;
}
}
return 0;
}
static int ath10k_wow_enable(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->target_suspend);
ret = ath10k_wmi_wow_enable(ar);
if (ret) {
ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
return ret;
}
ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
if (ret == 0) {
ath10k_warn(ar, "timed out while waiting for suspend completion\n");
return -ETIMEDOUT;
}
return 0;
}
static int ath10k_wow_wakeup(struct ath10k *ar)
{
int ret;
lockdep_assert_held(&ar->conf_mutex);
reinit_completion(&ar->wow.wakeup_completed);
ret = ath10k_wmi_wow_host_wakeup_ind(ar);
if (ret) {
ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
ret);
return ret;
}
ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
if (ret == 0) {
ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
return -ETIMEDOUT;
}
return 0;
}
int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
struct cfg80211_wowlan *wowlan)
{
struct ath10k *ar = hw->priv;
int ret;
mutex_lock(&ar->conf_mutex);
if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
ar->running_fw->fw_file.fw_features))) {
ret = 1;
goto exit;
}
ret = ath10k_wow_cleanup(ar);
if (ret) {
ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
ret);
goto exit;
}
ret = ath10k_wow_set_wakeups(ar, wowlan);
if (ret) {
ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
ret);
goto cleanup;
}
ath10k_mac_wait_tx_complete(ar);
ret = ath10k_wow_enable(ar);
if (ret) {
ath10k_warn(ar, "failed to start wow: %d\n", ret);
goto cleanup;
}
ret = ath10k_hif_suspend(ar);
if (ret) {
ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
goto wakeup;
}
goto exit;
wakeup:
ath10k_wow_wakeup(ar);
cleanup:
ath10k_wow_cleanup(ar);
exit:
mutex_unlock(&ar->conf_mutex);
return ret ? 1 : 0;
}
void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
{
struct ath10k *ar = hw->priv;
mutex_lock(&ar->conf_mutex);
if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
ar->running_fw->fw_file.fw_features)) {
device_set_wakeup_enable(ar->dev, enabled);
}
mutex_unlock(&ar->conf_mutex);
}
int ath10k_wow_op_resume(struct ieee80211_hw *hw)
{
struct ath10k *ar = hw->priv;
int ret;
mutex_lock(&ar->conf_mutex);
if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
ar->running_fw->fw_file.fw_features))) {
ret = 1;
goto exit;
}
ret = ath10k_hif_resume(ar);
if (ret) {
ath10k_warn(ar, "failed to resume hif: %d\n", ret);
goto exit;
}
ret = ath10k_wow_wakeup(ar);
if (ret)
ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
ret = ath10k_wow_nlo_cleanup(ar);
if (ret)
ath10k_warn(ar, "failed to cleanup nlo: %d\n", ret);
exit:
if (ret) {
switch (ar->state) {
case ATH10K_STATE_ON:
ar->state = ATH10K_STATE_RESTARTING;
ret = 1;
break;
case ATH10K_STATE_OFF:
case ATH10K_STATE_RESTARTING:
case ATH10K_STATE_RESTARTED:
case ATH10K_STATE_UTF:
case ATH10K_STATE_WEDGED:
ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
ar->state);
ret = -EIO;
break;
}
}
mutex_unlock(&ar->conf_mutex);
return ret;
}
int ath10k_wow_init(struct ath10k *ar)
{
if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
ar->running_fw->fw_file.fw_features))
return 0;
if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
return -EINVAL;
ar->wow.wowlan_support = ath10k_wowlan_support;
if (ar->wmi.rx_decap_mode == ATH10K_HW_TXRX_NATIVE_WIFI) {
ar->wow.wowlan_support.pattern_max_len -= WOW_MAX_REDUCE;
ar->wow.wowlan_support.max_pkt_offset -= WOW_MAX_REDUCE;
}
if (test_bit(WMI_SERVICE_NLO, ar->wmi.svc_map)) {
ar->wow.wowlan_support.flags |= WIPHY_WOWLAN_NET_DETECT;
ar->wow.wowlan_support.max_nd_match_sets = WMI_PNO_MAX_SUPP_NETWORKS;
}
ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
device_set_wakeup_capable(ar->dev, true);
return 0;
}
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