355 lines
8.2 KiB
C
355 lines
8.2 KiB
C
/*
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* Copyright (c) 2015 Qualcomm Atheros, Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mac.h"
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#include <net/mac80211.h>
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#include "hif.h"
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#include "core.h"
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#include "debug.h"
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#include "wmi.h"
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#include "wmi-ops.h"
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static const struct wiphy_wowlan_support ath10k_wowlan_support = {
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.flags = WIPHY_WOWLAN_DISCONNECT |
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WIPHY_WOWLAN_MAGIC_PKT,
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.pattern_min_len = WOW_MIN_PATTERN_SIZE,
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.pattern_max_len = WOW_MAX_PATTERN_SIZE,
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.max_pkt_offset = WOW_MAX_PKT_OFFSET,
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};
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static int ath10k_wow_vif_cleanup(struct ath10k_vif *arvif)
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{
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struct ath10k *ar = arvif->ar;
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int i, ret;
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for (i = 0; i < WOW_EVENT_MAX; i++) {
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ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 0);
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if (ret) {
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ath10k_warn(ar, "failed to issue wow wakeup for event %s on vdev %i: %d\n",
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wow_wakeup_event(i), arvif->vdev_id, ret);
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return ret;
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}
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}
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for (i = 0; i < ar->wow.max_num_patterns; i++) {
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ret = ath10k_wmi_wow_del_pattern(ar, arvif->vdev_id, i);
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if (ret) {
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ath10k_warn(ar, "failed to delete wow pattern %d for vdev %i: %d\n",
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i, arvif->vdev_id, ret);
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return ret;
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}
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}
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return 0;
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}
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static int ath10k_wow_cleanup(struct ath10k *ar)
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{
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struct ath10k_vif *arvif;
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int ret;
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lockdep_assert_held(&ar->conf_mutex);
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list_for_each_entry(arvif, &ar->arvifs, list) {
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ret = ath10k_wow_vif_cleanup(arvif);
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if (ret) {
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ath10k_warn(ar, "failed to clean wow wakeups on vdev %i: %d\n",
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arvif->vdev_id, ret);
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return ret;
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}
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}
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return 0;
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}
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static int ath10k_vif_wow_set_wakeups(struct ath10k_vif *arvif,
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struct cfg80211_wowlan *wowlan)
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{
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int ret, i;
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unsigned long wow_mask = 0;
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struct ath10k *ar = arvif->ar;
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const struct cfg80211_pkt_pattern *patterns = wowlan->patterns;
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int pattern_id = 0;
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/* Setup requested WOW features */
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switch (arvif->vdev_type) {
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case WMI_VDEV_TYPE_IBSS:
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__set_bit(WOW_BEACON_EVENT, &wow_mask);
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/* fall through */
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case WMI_VDEV_TYPE_AP:
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__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
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__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
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__set_bit(WOW_PROBE_REQ_WPS_IE_EVENT, &wow_mask);
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__set_bit(WOW_AUTH_REQ_EVENT, &wow_mask);
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__set_bit(WOW_ASSOC_REQ_EVENT, &wow_mask);
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__set_bit(WOW_HTT_EVENT, &wow_mask);
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__set_bit(WOW_RA_MATCH_EVENT, &wow_mask);
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break;
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case WMI_VDEV_TYPE_STA:
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if (wowlan->disconnect) {
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__set_bit(WOW_DEAUTH_RECVD_EVENT, &wow_mask);
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__set_bit(WOW_DISASSOC_RECVD_EVENT, &wow_mask);
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__set_bit(WOW_BMISS_EVENT, &wow_mask);
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__set_bit(WOW_CSA_IE_EVENT, &wow_mask);
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}
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if (wowlan->magic_pkt)
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__set_bit(WOW_MAGIC_PKT_RECVD_EVENT, &wow_mask);
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break;
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default:
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break;
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}
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for (i = 0; i < wowlan->n_patterns; i++) {
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u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
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int j;
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if (patterns[i].pattern_len > WOW_MAX_PATTERN_SIZE)
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continue;
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/* convert bytemask to bitmask */
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for (j = 0; j < patterns[i].pattern_len; j++)
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if (patterns[i].mask[j / 8] & BIT(j % 8))
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bitmask[j] = 0xff;
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ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
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pattern_id,
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patterns[i].pattern,
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bitmask,
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patterns[i].pattern_len,
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patterns[i].pkt_offset);
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if (ret) {
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ath10k_warn(ar, "failed to add pattern %i to vdev %i: %d\n",
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pattern_id,
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arvif->vdev_id, ret);
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return ret;
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}
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pattern_id++;
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__set_bit(WOW_PATTERN_MATCH_EVENT, &wow_mask);
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}
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for (i = 0; i < WOW_EVENT_MAX; i++) {
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if (!test_bit(i, &wow_mask))
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continue;
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ret = ath10k_wmi_wow_add_wakeup_event(ar, arvif->vdev_id, i, 1);
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if (ret) {
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ath10k_warn(ar, "failed to enable wakeup event %s on vdev %i: %d\n",
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wow_wakeup_event(i), arvif->vdev_id, ret);
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return ret;
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}
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}
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return 0;
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}
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static int ath10k_wow_set_wakeups(struct ath10k *ar,
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struct cfg80211_wowlan *wowlan)
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{
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struct ath10k_vif *arvif;
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int ret;
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lockdep_assert_held(&ar->conf_mutex);
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list_for_each_entry(arvif, &ar->arvifs, list) {
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ret = ath10k_vif_wow_set_wakeups(arvif, wowlan);
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if (ret) {
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ath10k_warn(ar, "failed to set wow wakeups on vdev %i: %d\n",
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arvif->vdev_id, ret);
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return ret;
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}
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}
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return 0;
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}
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static int ath10k_wow_enable(struct ath10k *ar)
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{
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int ret;
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lockdep_assert_held(&ar->conf_mutex);
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reinit_completion(&ar->target_suspend);
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ret = ath10k_wmi_wow_enable(ar);
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if (ret) {
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ath10k_warn(ar, "failed to issue wow enable: %d\n", ret);
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return ret;
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}
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ret = wait_for_completion_timeout(&ar->target_suspend, 3 * HZ);
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if (ret == 0) {
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ath10k_warn(ar, "timed out while waiting for suspend completion\n");
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return -ETIMEDOUT;
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}
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return 0;
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}
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static int ath10k_wow_wakeup(struct ath10k *ar)
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{
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int ret;
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lockdep_assert_held(&ar->conf_mutex);
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reinit_completion(&ar->wow.wakeup_completed);
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ret = ath10k_wmi_wow_host_wakeup_ind(ar);
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if (ret) {
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ath10k_warn(ar, "failed to send wow wakeup indication: %d\n",
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ret);
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return ret;
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}
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ret = wait_for_completion_timeout(&ar->wow.wakeup_completed, 3 * HZ);
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if (ret == 0) {
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ath10k_warn(ar, "timed out while waiting for wow wakeup completion\n");
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return -ETIMEDOUT;
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}
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return 0;
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}
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int ath10k_wow_op_suspend(struct ieee80211_hw *hw,
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struct cfg80211_wowlan *wowlan)
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{
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struct ath10k *ar = hw->priv;
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int ret;
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mutex_lock(&ar->conf_mutex);
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if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
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ar->running_fw->fw_file.fw_features))) {
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ret = 1;
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goto exit;
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}
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ret = ath10k_wow_cleanup(ar);
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if (ret) {
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ath10k_warn(ar, "failed to clear wow wakeup events: %d\n",
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ret);
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goto exit;
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}
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ret = ath10k_wow_set_wakeups(ar, wowlan);
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if (ret) {
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ath10k_warn(ar, "failed to set wow wakeup events: %d\n",
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ret);
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goto cleanup;
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}
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ret = ath10k_wow_enable(ar);
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if (ret) {
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ath10k_warn(ar, "failed to start wow: %d\n", ret);
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goto cleanup;
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}
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ret = ath10k_hif_suspend(ar);
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if (ret) {
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ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
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goto wakeup;
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}
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goto exit;
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wakeup:
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ath10k_wow_wakeup(ar);
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cleanup:
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ath10k_wow_cleanup(ar);
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exit:
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mutex_unlock(&ar->conf_mutex);
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return ret ? 1 : 0;
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}
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void ath10k_wow_op_set_wakeup(struct ieee80211_hw *hw, bool enabled)
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{
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struct ath10k *ar = hw->priv;
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mutex_lock(&ar->conf_mutex);
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if (test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
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ar->running_fw->fw_file.fw_features)) {
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device_set_wakeup_enable(ar->dev, enabled);
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}
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mutex_unlock(&ar->conf_mutex);
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}
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int ath10k_wow_op_resume(struct ieee80211_hw *hw)
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{
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struct ath10k *ar = hw->priv;
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int ret;
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mutex_lock(&ar->conf_mutex);
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if (WARN_ON(!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
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ar->running_fw->fw_file.fw_features))) {
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ret = 1;
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goto exit;
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}
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ret = ath10k_hif_resume(ar);
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if (ret) {
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ath10k_warn(ar, "failed to resume hif: %d\n", ret);
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goto exit;
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}
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ret = ath10k_wow_wakeup(ar);
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if (ret)
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ath10k_warn(ar, "failed to wakeup from wow: %d\n", ret);
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exit:
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if (ret) {
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switch (ar->state) {
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case ATH10K_STATE_ON:
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ar->state = ATH10K_STATE_RESTARTING;
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ret = 1;
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break;
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case ATH10K_STATE_OFF:
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case ATH10K_STATE_RESTARTING:
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case ATH10K_STATE_RESTARTED:
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case ATH10K_STATE_UTF:
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case ATH10K_STATE_WEDGED:
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ath10k_warn(ar, "encountered unexpected device state %d on resume, cannot recover\n",
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ar->state);
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ret = -EIO;
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break;
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}
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}
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mutex_unlock(&ar->conf_mutex);
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return ret;
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}
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int ath10k_wow_init(struct ath10k *ar)
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{
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if (!test_bit(ATH10K_FW_FEATURE_WOWLAN_SUPPORT,
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ar->running_fw->fw_file.fw_features))
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return 0;
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if (WARN_ON(!test_bit(WMI_SERVICE_WOW, ar->wmi.svc_map)))
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return -EINVAL;
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ar->wow.wowlan_support = ath10k_wowlan_support;
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ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
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ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
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device_set_wakeup_capable(ar->dev, true);
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return 0;
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}
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