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/*
* Copyright (c) 2015 Qualcomm Atheros, Inc.
*
* 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,
};
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;
}
}
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;
}
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;
/* 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);
break;
default:
break;
}
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_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->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;
}
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;
}
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->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);
exit:
mutex_unlock(&ar->conf_mutex);
return ret ? 1 : 0;
}
int ath10k_wow_init(struct ath10k *ar)
{
if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT, ar->fw_features))
return 0;
if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
return -EINVAL;
ar->hw->wiphy->wowlan = &ath10k_wowlan_support;
return 0;
}
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