--- /dev/null
+/*
+ * 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,
+ .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;
+}
+
+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);
+ break;
+ default:
+ break;
+ }
+
+ for (i = 0; i < wowlan->n_patterns; i++) {
+ u8 bitmask[WOW_MAX_PATTERN_SIZE] = {};
+ int j;
+
+ 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;
+
+ ret = ath10k_wmi_wow_add_pattern(ar, arvif->vdev_id,
+ pattern_id,
+ patterns[i].pattern,
+ bitmask,
+ patterns[i].pattern_len,
+ patterns[i].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_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:
+ 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->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;
+ ar->wow.wowlan_support.n_patterns = ar->wow.max_num_patterns;
+ ar->hw->wiphy->wowlan = &ar->wow.wowlan_support;
+
+ return 0;
+}
Code Review / kvmfornfv.git / blobdiff