Return-path: Received: from wolverine02.qualcomm.com ([199.106.114.251]:56503 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752175AbcDDXUV (ORCPT ); Mon, 4 Apr 2016 19:20:21 -0400 From: Peter Oh To: CC: Subject: [PATCH 1/3] ath10k: add a support of set_tsf on vdev interface Date: Mon, 4 Apr 2016 16:19:14 -0700 Message-ID: <1459811956-26186-2-git-send-email-poh@qca.qualcomm.com> (sfid-20160405_012029_892623_7399F395) In-Reply-To: <1459811956-26186-1-git-send-email-poh@qca.qualcomm.com> References: <1459811956-26186-1-git-send-email-poh@qca.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: 10.2.4.70.24 firmware introduces new feature to set TSF via vdev parameter, hence implement relevant function. set_tsf function can be used to shift TBTT that will help avoid its clockdrift which happens when beacons are collided. Signed-off-by: Peter Oh --- drivers/net/wireless/ath/ath10k/mac.c | 27 +++++++++++++++++++++++++++ drivers/net/wireless/ath/ath10k/wmi-tlv.c | 1 + drivers/net/wireless/ath/ath10k/wmi.c | 4 ++++ drivers/net/wireless/ath/ath10k/wmi.h | 2 ++ 4 files changed, 34 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 20d72e2..595cd96 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -6796,6 +6796,32 @@ static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) return 0; } +static void ath10k_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + u64 tsf) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 tsf_offset, vdev_param = ar->wmi.vdev_param->set_tsf; + int ret; + + /* Workaround: + * + * Given tsf argument is entire TSF value, but firmware accepts + * only TSF offset to current TSF. + * + * get_tsf function is used to get offset value, however since + * ath10k_get_tsf is not implemented properly, it will return 0 always. + * Luckily all the caller functions to set_tsf, as of now, also rely on + * get_tsf function to get entire tsf value such get_tsf() + tsf_delta, + * final tsf offset value to firmware will be arithmetically correct. + */ + tsf_offset = tsf - ath10k_get_tsf(hw, vif); + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + vdev_param, tsf_offset); + if (ret && ret != -EOPNOTSUPP) + ath10k_warn(ar, "failed to set tsf offset: %d\n", ret); +} + static int ath10k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_ampdu_params *params) @@ -7252,6 +7278,7 @@ static const struct ieee80211_ops ath10k_ops = { .set_bitrate_mask = ath10k_mac_op_set_bitrate_mask, .sta_rc_update = ath10k_sta_rc_update, .get_tsf = ath10k_get_tsf, + .set_tsf = ath10k_set_tsf, .ampdu_action = ath10k_ampdu_action, .get_et_sset_count = ath10k_debug_get_et_sset_count, .get_et_stats = ath10k_debug_get_et_stats, diff --git a/drivers/net/wireless/ath/ath10k/wmi-tlv.c b/drivers/net/wireless/ath/ath10k/wmi-tlv.c index 1085932..e09337e 100644 --- a/drivers/net/wireless/ath/ath10k/wmi-tlv.c +++ b/drivers/net/wireless/ath/ath10k/wmi-tlv.c @@ -3409,6 +3409,7 @@ static struct wmi_vdev_param_map wmi_tlv_vdev_param_map = { .meru_vc = WMI_VDEV_PARAM_UNSUPPORTED, .rx_decap_type = WMI_VDEV_PARAM_UNSUPPORTED, .bw_nss_ratemask = WMI_VDEV_PARAM_UNSUPPORTED, + .set_tsf = WMI_VDEV_PARAM_UNSUPPORTED, }; static const struct wmi_ops wmi_tlv_ops = { diff --git a/drivers/net/wireless/ath/ath10k/wmi.c b/drivers/net/wireless/ath/ath10k/wmi.c index f7ec65f..db3e9a4 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.c +++ b/drivers/net/wireless/ath/ath10k/wmi.c @@ -781,6 +781,7 @@ static struct wmi_vdev_param_map wmi_vdev_param_map = { .meru_vc = WMI_VDEV_PARAM_UNSUPPORTED, .rx_decap_type = WMI_VDEV_PARAM_UNSUPPORTED, .bw_nss_ratemask = WMI_VDEV_PARAM_UNSUPPORTED, + .set_tsf = WMI_VDEV_PARAM_UNSUPPORTED, }; /* 10.X WMI VDEV param map */ @@ -856,6 +857,7 @@ static struct wmi_vdev_param_map wmi_10x_vdev_param_map = { .meru_vc = WMI_VDEV_PARAM_UNSUPPORTED, .rx_decap_type = WMI_VDEV_PARAM_UNSUPPORTED, .bw_nss_ratemask = WMI_VDEV_PARAM_UNSUPPORTED, + .set_tsf = WMI_VDEV_PARAM_UNSUPPORTED, }; static struct wmi_vdev_param_map wmi_10_2_4_vdev_param_map = { @@ -930,6 +932,7 @@ static struct wmi_vdev_param_map wmi_10_2_4_vdev_param_map = { .meru_vc = WMI_VDEV_PARAM_UNSUPPORTED, .rx_decap_type = WMI_VDEV_PARAM_UNSUPPORTED, .bw_nss_ratemask = WMI_VDEV_PARAM_UNSUPPORTED, + .set_tsf = WMI_10X_VDEV_PARAM_TSF_INCREMENT, }; static struct wmi_vdev_param_map wmi_10_4_vdev_param_map = { @@ -1005,6 +1008,7 @@ static struct wmi_vdev_param_map wmi_10_4_vdev_param_map = { .meru_vc = WMI_10_4_VDEV_PARAM_MERU_VC, .rx_decap_type = WMI_10_4_VDEV_PARAM_RX_DECAP_TYPE, .bw_nss_ratemask = WMI_10_4_VDEV_PARAM_BW_NSS_RATEMASK, + .set_tsf = WMI_VDEV_PARAM_UNSUPPORTED, }; static struct wmi_pdev_param_map wmi_pdev_param_map = { diff --git a/drivers/net/wireless/ath/ath10k/wmi.h b/drivers/net/wireless/ath/ath10k/wmi.h index feebd19..8225d90 100644 --- a/drivers/net/wireless/ath/ath10k/wmi.h +++ b/drivers/net/wireless/ath/ath10k/wmi.h @@ -4630,6 +4630,7 @@ struct wmi_vdev_param_map { u32 meru_vc; u32 rx_decap_type; u32 bw_nss_ratemask; + u32 set_tsf; }; #define WMI_VDEV_PARAM_UNSUPPORTED 0 @@ -4886,6 +4887,7 @@ enum wmi_10x_vdev_param { WMI_10X_VDEV_PARAM_RTS_FIXED_RATE, WMI_10X_VDEV_PARAM_VHT_SGIMASK, WMI_10X_VDEV_PARAM_VHT80_RATEMASK, + WMI_10X_VDEV_PARAM_TSF_INCREMENT, }; enum wmi_10_4_vdev_param { -- 1.9.1