ath10k: introduce dynamic pdev parameters
authorBartosz Markowski <bartosz.markowski@tieto.com>
Thu, 26 Sep 2013 15:47:16 +0000 (17:47 +0200)
committerKalle Valo <kvalo@qca.qualcomm.com>
Fri, 27 Sep 2013 11:58:15 +0000 (14:58 +0300)
This is done exactly the same way as for vdev.

Signed-off-by: Bartosz Markowski <bartosz.markowski@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
drivers/net/wireless/ath/ath10k/core.h
drivers/net/wireless/ath/ath10k/mac.c
drivers/net/wireless/ath/ath10k/wmi.c
drivers/net/wireless/ath/ath10k/wmi.h

index 124e724..d5da8a9 100644 (file)
@@ -120,6 +120,7 @@ struct ath10k_wmi {
        wait_queue_head_t tx_credits_wq;
        struct wmi_cmd_map *cmd;
        struct wmi_vdev_param_map *vdev_param;
+       struct wmi_pdev_param_map *pdev_param;
 
        u32 num_mem_chunks;
        struct ath10k_mem_chunk mem_chunks[ATH10K_MAX_MEM_REQS];
index b5ae01d..8684e03 100644 (file)
@@ -1882,12 +1882,12 @@ static int ath10k_start(struct ieee80211_hw *hw)
        else if (ar->state == ATH10K_STATE_RESTARTING)
                ar->state = ATH10K_STATE_RESTARTED;
 
-       ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_PMF_QOS, 1);
+       ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
        if (ret)
                ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n",
                            ret);
 
-       ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_DYNAMIC_BW, 0);
+       ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 0);
        if (ret)
                ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n",
                            ret);
@@ -2209,7 +2209,7 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
        struct ath10k *ar = hw->priv;
        struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
        int ret = 0;
-       u32 vdev_param;
+       u32 vdev_param, pdev_param;
 
        mutex_lock(&ar->conf_mutex);
 
@@ -2235,8 +2235,8 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
                           "vdev %d set beacon tx mode to staggered\n",
                           arvif->vdev_id);
 
-               ret = ath10k_wmi_pdev_set_param(ar,
-                                               WMI_PDEV_PARAM_BEACON_TX_MODE,
+               pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
+               ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
                                                WMI_BEACON_STAGGERED_MODE);
                if (ret)
                        ath10k_warn("Failed to set beacon mode for VDEV: %d\n",
index 89a8cb8..3460cf4 100644 (file)
@@ -383,6 +383,111 @@ static struct wmi_vdev_param_map wmi_10x_vdev_param_map = {
                WMI_10X_VDEV_PARAM_AP_DETECT_OUT_OF_SYNC_SLEEPING_STA_TIME_SECS,
 };
 
+static struct wmi_pdev_param_map wmi_pdev_param_map = {
+       .tx_chain_mask = WMI_PDEV_PARAM_TX_CHAIN_MASK,
+       .rx_chain_mask = WMI_PDEV_PARAM_RX_CHAIN_MASK,
+       .txpower_limit2g = WMI_PDEV_PARAM_TXPOWER_LIMIT2G,
+       .txpower_limit5g = WMI_PDEV_PARAM_TXPOWER_LIMIT5G,
+       .txpower_scale = WMI_PDEV_PARAM_TXPOWER_SCALE,
+       .beacon_gen_mode = WMI_PDEV_PARAM_BEACON_GEN_MODE,
+       .beacon_tx_mode = WMI_PDEV_PARAM_BEACON_TX_MODE,
+       .resmgr_offchan_mode = WMI_PDEV_PARAM_RESMGR_OFFCHAN_MODE,
+       .protection_mode = WMI_PDEV_PARAM_PROTECTION_MODE,
+       .dynamic_bw = WMI_PDEV_PARAM_DYNAMIC_BW,
+       .non_agg_sw_retry_th = WMI_PDEV_PARAM_NON_AGG_SW_RETRY_TH,
+       .agg_sw_retry_th = WMI_PDEV_PARAM_AGG_SW_RETRY_TH,
+       .sta_kickout_th = WMI_PDEV_PARAM_STA_KICKOUT_TH,
+       .ac_aggrsize_scaling = WMI_PDEV_PARAM_AC_AGGRSIZE_SCALING,
+       .ltr_enable = WMI_PDEV_PARAM_LTR_ENABLE,
+       .ltr_ac_latency_be = WMI_PDEV_PARAM_LTR_AC_LATENCY_BE,
+       .ltr_ac_latency_bk = WMI_PDEV_PARAM_LTR_AC_LATENCY_BK,
+       .ltr_ac_latency_vi = WMI_PDEV_PARAM_LTR_AC_LATENCY_VI,
+       .ltr_ac_latency_vo = WMI_PDEV_PARAM_LTR_AC_LATENCY_VO,
+       .ltr_ac_latency_timeout = WMI_PDEV_PARAM_LTR_AC_LATENCY_TIMEOUT,
+       .ltr_sleep_override = WMI_PDEV_PARAM_LTR_SLEEP_OVERRIDE,
+       .ltr_rx_override = WMI_PDEV_PARAM_LTR_RX_OVERRIDE,
+       .ltr_tx_activity_timeout = WMI_PDEV_PARAM_LTR_TX_ACTIVITY_TIMEOUT,
+       .l1ss_enable = WMI_PDEV_PARAM_L1SS_ENABLE,
+       .dsleep_enable = WMI_PDEV_PARAM_DSLEEP_ENABLE,
+       .pcielp_txbuf_flush = WMI_PDEV_PARAM_PCIELP_TXBUF_FLUSH,
+       .pcielp_txbuf_watermark = WMI_PDEV_PARAM_PCIELP_TXBUF_TMO_EN,
+       .pcielp_txbuf_tmo_en = WMI_PDEV_PARAM_PCIELP_TXBUF_TMO_EN,
+       .pcielp_txbuf_tmo_value = WMI_PDEV_PARAM_PCIELP_TXBUF_TMO_VALUE,
+       .pdev_stats_update_period = WMI_PDEV_PARAM_PDEV_STATS_UPDATE_PERIOD,
+       .vdev_stats_update_period = WMI_PDEV_PARAM_VDEV_STATS_UPDATE_PERIOD,
+       .peer_stats_update_period = WMI_PDEV_PARAM_PEER_STATS_UPDATE_PERIOD,
+       .bcnflt_stats_update_period = WMI_PDEV_PARAM_BCNFLT_STATS_UPDATE_PERIOD,
+       .pmf_qos = WMI_PDEV_PARAM_PMF_QOS,
+       .arp_ac_override = WMI_PDEV_PARAM_ARP_AC_OVERRIDE,
+       .arpdhcp_ac_override = WMI_PDEV_PARAM_UNSUPPORTED,
+       .dcs = WMI_PDEV_PARAM_DCS,
+       .ani_enable = WMI_PDEV_PARAM_ANI_ENABLE,
+       .ani_poll_period = WMI_PDEV_PARAM_ANI_POLL_PERIOD,
+       .ani_listen_period = WMI_PDEV_PARAM_ANI_LISTEN_PERIOD,
+       .ani_ofdm_level = WMI_PDEV_PARAM_ANI_OFDM_LEVEL,
+       .ani_cck_level = WMI_PDEV_PARAM_ANI_CCK_LEVEL,
+       .dyntxchain = WMI_PDEV_PARAM_DYNTXCHAIN,
+       .proxy_sta = WMI_PDEV_PARAM_PROXY_STA,
+       .idle_ps_config = WMI_PDEV_PARAM_IDLE_PS_CONFIG,
+       .power_gating_sleep = WMI_PDEV_PARAM_POWER_GATING_SLEEP,
+       .fast_channel_reset = WMI_PDEV_PARAM_UNSUPPORTED,
+       .burst_dur = WMI_PDEV_PARAM_UNSUPPORTED,
+       .burst_enable = WMI_PDEV_PARAM_UNSUPPORTED,
+};
+
+static struct wmi_pdev_param_map wmi_10x_pdev_param_map = {
+       .tx_chain_mask = WMI_10X_PDEV_PARAM_TX_CHAIN_MASK,
+       .rx_chain_mask = WMI_10X_PDEV_PARAM_RX_CHAIN_MASK,
+       .txpower_limit2g = WMI_10X_PDEV_PARAM_TXPOWER_LIMIT2G,
+       .txpower_limit5g = WMI_10X_PDEV_PARAM_TXPOWER_LIMIT5G,
+       .txpower_scale = WMI_10X_PDEV_PARAM_TXPOWER_SCALE,
+       .beacon_gen_mode = WMI_10X_PDEV_PARAM_BEACON_GEN_MODE,
+       .beacon_tx_mode = WMI_10X_PDEV_PARAM_BEACON_TX_MODE,
+       .resmgr_offchan_mode = WMI_10X_PDEV_PARAM_RESMGR_OFFCHAN_MODE,
+       .protection_mode = WMI_10X_PDEV_PARAM_PROTECTION_MODE,
+       .dynamic_bw = WMI_10X_PDEV_PARAM_DYNAMIC_BW,
+       .non_agg_sw_retry_th = WMI_10X_PDEV_PARAM_NON_AGG_SW_RETRY_TH,
+       .agg_sw_retry_th = WMI_10X_PDEV_PARAM_AGG_SW_RETRY_TH,
+       .sta_kickout_th = WMI_10X_PDEV_PARAM_STA_KICKOUT_TH,
+       .ac_aggrsize_scaling = WMI_10X_PDEV_PARAM_AC_AGGRSIZE_SCALING,
+       .ltr_enable = WMI_10X_PDEV_PARAM_LTR_ENABLE,
+       .ltr_ac_latency_be = WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_BE,
+       .ltr_ac_latency_bk = WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_BK,
+       .ltr_ac_latency_vi = WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_VI,
+       .ltr_ac_latency_vo = WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_VO,
+       .ltr_ac_latency_timeout = WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_TIMEOUT,
+       .ltr_sleep_override = WMI_10X_PDEV_PARAM_LTR_SLEEP_OVERRIDE,
+       .ltr_rx_override = WMI_10X_PDEV_PARAM_LTR_RX_OVERRIDE,
+       .ltr_tx_activity_timeout = WMI_10X_PDEV_PARAM_LTR_TX_ACTIVITY_TIMEOUT,
+       .l1ss_enable = WMI_10X_PDEV_PARAM_L1SS_ENABLE,
+       .dsleep_enable = WMI_10X_PDEV_PARAM_DSLEEP_ENABLE,
+       .pcielp_txbuf_flush = WMI_PDEV_PARAM_UNSUPPORTED,
+       .pcielp_txbuf_watermark = WMI_PDEV_PARAM_UNSUPPORTED,
+       .pcielp_txbuf_tmo_en = WMI_PDEV_PARAM_UNSUPPORTED,
+       .pcielp_txbuf_tmo_value = WMI_PDEV_PARAM_UNSUPPORTED,
+       .pdev_stats_update_period = WMI_10X_PDEV_PARAM_PDEV_STATS_UPDATE_PERIOD,
+       .vdev_stats_update_period = WMI_10X_PDEV_PARAM_VDEV_STATS_UPDATE_PERIOD,
+       .peer_stats_update_period = WMI_10X_PDEV_PARAM_PEER_STATS_UPDATE_PERIOD,
+       .bcnflt_stats_update_period =
+                               WMI_10X_PDEV_PARAM_BCNFLT_STATS_UPDATE_PERIOD,
+       .pmf_qos = WMI_10X_PDEV_PARAM_PMF_QOS,
+       .arp_ac_override = WMI_PDEV_PARAM_UNSUPPORTED,
+       .arpdhcp_ac_override = WMI_10X_PDEV_PARAM_ARPDHCP_AC_OVERRIDE,
+       .dcs = WMI_10X_PDEV_PARAM_DCS,
+       .ani_enable = WMI_10X_PDEV_PARAM_ANI_ENABLE,
+       .ani_poll_period = WMI_10X_PDEV_PARAM_ANI_POLL_PERIOD,
+       .ani_listen_period = WMI_10X_PDEV_PARAM_ANI_LISTEN_PERIOD,
+       .ani_ofdm_level = WMI_10X_PDEV_PARAM_ANI_OFDM_LEVEL,
+       .ani_cck_level = WMI_10X_PDEV_PARAM_ANI_CCK_LEVEL,
+       .dyntxchain = WMI_10X_PDEV_PARAM_DYNTXCHAIN,
+       .proxy_sta = WMI_PDEV_PARAM_UNSUPPORTED,
+       .idle_ps_config = WMI_PDEV_PARAM_UNSUPPORTED,
+       .power_gating_sleep = WMI_PDEV_PARAM_UNSUPPORTED,
+       .fast_channel_reset = WMI_10X_PDEV_PARAM_FAST_CHANNEL_RESET,
+       .burst_dur = WMI_10X_PDEV_PARAM_BURST_DUR,
+       .burst_enable = WMI_10X_PDEV_PARAM_BURST_ENABLE,
+};
+
 int ath10k_wmi_wait_for_service_ready(struct ath10k *ar)
 {
        int ret;
@@ -1870,10 +1975,12 @@ int ath10k_wmi_attach(struct ath10k *ar)
                ath10k_warn("Firmware 10.X is not yet supported\n");
                ar->wmi.cmd = &wmi_10x_cmd_map;
                ar->wmi.vdev_param = &wmi_10x_vdev_param_map;
+               ar->wmi.pdev_param = &wmi_10x_pdev_param_map;
                ret = -ENOTSUPP;
        } else {
                ar->wmi.cmd = &wmi_cmd_map;
                ar->wmi.vdev_param = &wmi_vdev_param_map;
+               ar->wmi.pdev_param = &wmi_pdev_param_map;
                ret = 0;
        }
 
@@ -2009,12 +2116,16 @@ int ath10k_wmi_pdev_resume_target(struct ath10k *ar)
        return ath10k_wmi_cmd_send(ar, skb, ar->wmi.cmd->pdev_resume_cmdid);
 }
 
-int ath10k_wmi_pdev_set_param(struct ath10k *ar, enum wmi_pdev_param id,
-                             u32 value)
+int ath10k_wmi_pdev_set_param(struct ath10k *ar, u32 id, u32 value)
 {
        struct wmi_pdev_set_param_cmd *cmd;
        struct sk_buff *skb;
 
+       if (id == WMI_PDEV_PARAM_UNSUPPORTED) {
+               ath10k_warn("pdev param %d not supported by firmware\n", id);
+               return -EINVAL;
+       }
+
        skb = ath10k_wmi_alloc_skb(sizeof(*cmd));
        if (!skb)
                return -ENOMEM;
index 1518586..80ab2f0 100644 (file)
@@ -2072,6 +2072,60 @@ struct wmi_csa_event {
 #define VDEV_DEFAULT_STATS_UPDATE_PERIOD    500
 #define PEER_DEFAULT_STATS_UPDATE_PERIOD    500
 
+struct wmi_pdev_param_map {
+       u32 tx_chain_mask;
+       u32 rx_chain_mask;
+       u32 txpower_limit2g;
+       u32 txpower_limit5g;
+       u32 txpower_scale;
+       u32 beacon_gen_mode;
+       u32 beacon_tx_mode;
+       u32 resmgr_offchan_mode;
+       u32 protection_mode;
+       u32 dynamic_bw;
+       u32 non_agg_sw_retry_th;
+       u32 agg_sw_retry_th;
+       u32 sta_kickout_th;
+       u32 ac_aggrsize_scaling;
+       u32 ltr_enable;
+       u32 ltr_ac_latency_be;
+       u32 ltr_ac_latency_bk;
+       u32 ltr_ac_latency_vi;
+       u32 ltr_ac_latency_vo;
+       u32 ltr_ac_latency_timeout;
+       u32 ltr_sleep_override;
+       u32 ltr_rx_override;
+       u32 ltr_tx_activity_timeout;
+       u32 l1ss_enable;
+       u32 dsleep_enable;
+       u32 pcielp_txbuf_flush;
+       u32 pcielp_txbuf_watermark;
+       u32 pcielp_txbuf_tmo_en;
+       u32 pcielp_txbuf_tmo_value;
+       u32 pdev_stats_update_period;
+       u32 vdev_stats_update_period;
+       u32 peer_stats_update_period;
+       u32 bcnflt_stats_update_period;
+       u32 pmf_qos;
+       u32 arp_ac_override;
+       u32 arpdhcp_ac_override;
+       u32 dcs;
+       u32 ani_enable;
+       u32 ani_poll_period;
+       u32 ani_listen_period;
+       u32 ani_ofdm_level;
+       u32 ani_cck_level;
+       u32 dyntxchain;
+       u32 proxy_sta;
+       u32 idle_ps_config;
+       u32 power_gating_sleep;
+       u32 fast_channel_reset;
+       u32 burst_dur;
+       u32 burst_enable;
+};
+
+#define WMI_PDEV_PARAM_UNSUPPORTED 0
+
 enum wmi_pdev_param {
        /* TX chian mask */
        WMI_PDEV_PARAM_TX_CHAIN_MASK = 0x1,
@@ -2171,6 +2225,97 @@ enum wmi_pdev_param {
        WMI_PDEV_PARAM_POWER_GATING_SLEEP,
 };
 
+enum wmi_10x_pdev_param {
+       /* TX chian mask */
+       WMI_10X_PDEV_PARAM_TX_CHAIN_MASK = 0x1,
+       /* RX chian mask */
+       WMI_10X_PDEV_PARAM_RX_CHAIN_MASK,
+       /* TX power limit for 2G Radio */
+       WMI_10X_PDEV_PARAM_TXPOWER_LIMIT2G,
+       /* TX power limit for 5G Radio */
+       WMI_10X_PDEV_PARAM_TXPOWER_LIMIT5G,
+       /* TX power scale */
+       WMI_10X_PDEV_PARAM_TXPOWER_SCALE,
+       /* Beacon generation mode . 0: host, 1: target   */
+       WMI_10X_PDEV_PARAM_BEACON_GEN_MODE,
+       /* Beacon generation mode . 0: staggered 1: bursted   */
+       WMI_10X_PDEV_PARAM_BEACON_TX_MODE,
+       /*
+        * Resource manager off chan mode .
+        * 0: turn off off chan mode. 1: turn on offchan mode
+        */
+       WMI_10X_PDEV_PARAM_RESMGR_OFFCHAN_MODE,
+       /*
+        * Protection mode:
+        * 0: no protection 1:use CTS-to-self 2: use RTS/CTS
+        */
+       WMI_10X_PDEV_PARAM_PROTECTION_MODE,
+       /* Dynamic bandwidth 0: disable 1: enable */
+       WMI_10X_PDEV_PARAM_DYNAMIC_BW,
+       /* Non aggregrate/ 11g sw retry threshold.0-disable */
+       WMI_10X_PDEV_PARAM_NON_AGG_SW_RETRY_TH,
+       /* aggregrate sw retry threshold. 0-disable*/
+       WMI_10X_PDEV_PARAM_AGG_SW_RETRY_TH,
+       /* Station kickout threshold (non of consecutive failures).0-disable */
+       WMI_10X_PDEV_PARAM_STA_KICKOUT_TH,
+       /* Aggerate size scaling configuration per AC */
+       WMI_10X_PDEV_PARAM_AC_AGGRSIZE_SCALING,
+       /* LTR enable */
+       WMI_10X_PDEV_PARAM_LTR_ENABLE,
+       /* LTR latency for BE, in us */
+       WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_BE,
+       /* LTR latency for BK, in us */
+       WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_BK,
+       /* LTR latency for VI, in us */
+       WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_VI,
+       /* LTR latency for VO, in us  */
+       WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_VO,
+       /* LTR AC latency timeout, in ms */
+       WMI_10X_PDEV_PARAM_LTR_AC_LATENCY_TIMEOUT,
+       /* LTR platform latency override, in us */
+       WMI_10X_PDEV_PARAM_LTR_SLEEP_OVERRIDE,
+       /* LTR-RX override, in us */
+       WMI_10X_PDEV_PARAM_LTR_RX_OVERRIDE,
+       /* Tx activity timeout for LTR, in us */
+       WMI_10X_PDEV_PARAM_LTR_TX_ACTIVITY_TIMEOUT,
+       /* L1SS state machine enable */
+       WMI_10X_PDEV_PARAM_L1SS_ENABLE,
+       /* Deep sleep state machine enable */
+       WMI_10X_PDEV_PARAM_DSLEEP_ENABLE,
+       /* pdev level stats update period in ms */
+       WMI_10X_PDEV_PARAM_PDEV_STATS_UPDATE_PERIOD,
+       /* vdev level stats update period in ms */
+       WMI_10X_PDEV_PARAM_VDEV_STATS_UPDATE_PERIOD,
+       /* peer level stats update period in ms */
+       WMI_10X_PDEV_PARAM_PEER_STATS_UPDATE_PERIOD,
+       /* beacon filter status update period */
+       WMI_10X_PDEV_PARAM_BCNFLT_STATS_UPDATE_PERIOD,
+       /* QOS Mgmt frame protection MFP/PMF 0: disable, 1: enable */
+       WMI_10X_PDEV_PARAM_PMF_QOS,
+       /* Access category on which ARP and DHCP frames are sent */
+       WMI_10X_PDEV_PARAM_ARPDHCP_AC_OVERRIDE,
+       /* DCS configuration */
+       WMI_10X_PDEV_PARAM_DCS,
+       /* Enable/Disable ANI on target */
+       WMI_10X_PDEV_PARAM_ANI_ENABLE,
+       /* configure the ANI polling period */
+       WMI_10X_PDEV_PARAM_ANI_POLL_PERIOD,
+       /* configure the ANI listening period */
+       WMI_10X_PDEV_PARAM_ANI_LISTEN_PERIOD,
+       /* configure OFDM immunity level */
+       WMI_10X_PDEV_PARAM_ANI_OFDM_LEVEL,
+       /* configure CCK immunity level */
+       WMI_10X_PDEV_PARAM_ANI_CCK_LEVEL,
+       /* Enable/Disable CDD for 1x1 STAs in rate control module */
+       WMI_10X_PDEV_PARAM_DYNTXCHAIN,
+       /* Enable/Disable Fast channel reset*/
+       WMI_10X_PDEV_PARAM_FAST_CHANNEL_RESET,
+       /* Set Bursting DUR */
+       WMI_10X_PDEV_PARAM_BURST_DUR,
+       /* Set Bursting Enable*/
+       WMI_10X_PDEV_PARAM_BURST_ENABLE,
+};
+
 struct wmi_pdev_set_param_cmd {
        __le32 param_id;
        __le32 param_value;
@@ -3797,8 +3942,7 @@ int ath10k_wmi_pdev_suspend_target(struct ath10k *ar);
 int ath10k_wmi_pdev_resume_target(struct ath10k *ar);
 int ath10k_wmi_pdev_set_regdomain(struct ath10k *ar, u16 rd, u16 rd2g,
                                  u16 rd5g, u16 ctl2g, u16 ctl5g);
-int ath10k_wmi_pdev_set_param(struct ath10k *ar, enum wmi_pdev_param id,
-                             u32 value);
+int ath10k_wmi_pdev_set_param(struct ath10k *ar, u32 id, u32 value);
 int ath10k_wmi_cmd_init(struct ath10k *ar);
 int ath10k_wmi_start_scan(struct ath10k *ar, const struct wmi_start_scan_arg *);
 void ath10k_wmi_start_scan_init(struct ath10k *ar, struct wmi_start_scan_arg *);