Return-path: Received: from wolverine02.qualcomm.com ([199.106.114.251]:37756 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753928Ab1JYKiU (ORCPT ); Tue, 25 Oct 2011 06:38:20 -0400 From: To: CC: , Raja Mani Subject: [PATCH 4/7] ath6kl: Add new functions to handle wow suspend/resume operations Date: Tue, 25 Oct 2011 16:07:24 +0530 Message-ID: <1319539047-8756-5-git-send-email-rmani@qca.qualcomm.com> (sfid-20111025_123822_650184_AC493316) In-Reply-To: <1319539047-8756-1-git-send-email-rmani@qca.qualcomm.com> References: <1319539047-8756-1-git-send-email-rmani@qca.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Raja Mani Signed-off-by: Raja Mani --- drivers/net/wireless/ath/ath6kl/cfg80211.c | 121 ++++++++++++++++++++++++++++ drivers/net/wireless/ath/ath6kl/core.h | 3 + 2 files changed, 124 insertions(+), 0 deletions(-) diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c b/drivers/net/wireless/ath/ath6kl/cfg80211.c index 0680d2b..aaf8d0f 100644 --- a/drivers/net/wireless/ath/ath6kl/cfg80211.c +++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c @@ -1481,6 +1481,127 @@ static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev) } #ifdef CONFIG_PM + +int ath6kl_pm_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow) +{ + struct wmi_set_wow_mode_cmd wakeup_filter_cmd; + struct wmi_add_wow_pattern_cmd add_pattern_cmd; + struct wmi_del_wow_pattern_cmd del_pattern_cmd; + struct wmi_set_host_sleep_mode_cmd hsleep_cmd; + int i, ret, pos, left; + u8 mask[WOW_PATTERN_SIZE]; + + if (WARN_ON(!wow)) + return -EINVAL; + + if (ar->wow_state != ATH6KL_WOW_STATE_NONE) + return -EINVAL; + + ar->wow_state = ATH6KL_WOW_STATE_SUSPENDING; + + /* Clear existing WOW patterns */ + for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++) { + del_pattern_cmd.filter_list_id = cpu_to_le16(WOW_LIST_ID); + del_pattern_cmd.filter_id = cpu_to_le16(i); + ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, &del_pattern_cmd); + } + + /* Configure new WOW patterns */ + memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd)); + wakeup_filter_cmd.enable_wow = cpu_to_le32(0x1); + wakeup_filter_cmd.host_req_delay = cpu_to_le32(WOW_HOST_REQ_DELAY); + + if (wow->disconnect) + wakeup_filter_cmd.filter |= + cpu_to_le32(WOW_FILTER_OPTION_NWK_DISASSOC); + + if (wow->magic_pkt) + wakeup_filter_cmd.filter |= + cpu_to_le32(WOW_FILTER_OPTION_MAGIC_PACKET); + + if (wow->gtk_rekey_failure) + wakeup_filter_cmd.filter |= + cpu_to_le32(WOW_FILTER_OPTION_GTK_ERROR); + + if (wow->eap_identity_req) + wakeup_filter_cmd.filter |= + cpu_to_le32(WOW_FILTER_OPTION_EAP_REQ); + + if (wow->four_way_handshake) + wakeup_filter_cmd.filter |= + cpu_to_le32(WOW_FILTER_OPTION_8021X_4WAYHS); + + for (i = 0; i < wow->n_patterns; i++) { + memset(&add_pattern_cmd, 0, sizeof(add_pattern_cmd)); + add_pattern_cmd.filter_list_id = WOW_LIST_ID; + add_pattern_cmd.filter_offset = 0; + add_pattern_cmd.filter_size = wow->patterns[i].pattern_len; + + memset(&mask, 0, sizeof(mask)); + for (pos = 0; pos < wow->patterns[i].pattern_len; + pos++) { + if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8))) + mask[pos] = 0xFF; + } + + ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi, + &add_pattern_cmd, + wow->patterns[i].pattern, mask); + if (ret) + return ret; + } + + if (wakeup_filter_cmd.filter || wow->n_patterns) { + ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, &wakeup_filter_cmd); + if (ret) + goto wow_setup_failed; + } + + hsleep_cmd.awake = cpu_to_le32(0); + hsleep_cmd.asleep = cpu_to_le32(1); + ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, &hsleep_cmd); + if (ret) + goto wow_setup_failed; + + if (ar->tx_pending[ar->ctrl_ep]) { + left = wait_event_interruptible_timeout(ar->event_wq, + ar->tx_pending[ar->ctrl_ep] == 0, WMI_TIMEOUT); + if (left == 0) { + ret = -ETIMEDOUT; + goto wow_setup_failed; + } else if (left < 0) { + ret = left; + goto wow_setup_failed; + } + } + + ar->wow_state = ATH6KL_WOW_STATE_SUSPENDED; + return 0; + +wow_setup_failed: + ar->wow_state = ATH6KL_WOW_STATE_NONE; + return ret; +} + +int ath6kl_pm_wow_resume(struct ath6kl *ar) +{ + struct wmi_set_host_sleep_mode_cmd hsleep_cmd; + int ret; + + if (ar->wow_state == ATH6KL_WOW_STATE_NONE) + return -EINVAL; + + hsleep_cmd.awake = cpu_to_le32(1); + hsleep_cmd.asleep = cpu_to_le32(0); + ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, &hsleep_cmd); + if (ret) + return ret; + + ar->wow_state = ATH6KL_WOW_STATE_NONE; + + return 0; +} + static int ar6k_cfg80211_suspend(struct wiphy *wiphy, struct cfg80211_wowlan *wow) { diff --git a/drivers/net/wireless/ath/ath6kl/core.h b/drivers/net/wireless/ath/ath6kl/core.h index 706443c..cefb233 100644 --- a/drivers/net/wireless/ath/ath6kl/core.h +++ b/drivers/net/wireless/ath/ath6kl/core.h @@ -386,6 +386,9 @@ enum ath6kl_wow_state { ATH6KL_WOW_STATE_SUSPENDED }; +#define WOW_LIST_ID 0 +#define WOW_HOST_REQ_DELAY 500 /* 500 ms */ + /* Flag info */ #define WMI_ENABLED 0 #define WMI_READY 1 -- 1.7.0.4