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Message-ID: <f5ebfd23-26b1-1407-c0d4-a3a60f860c5b@gmail.com>
Date:   Tue, 12 Jul 2022 00:43:32 +0200
From:   Philipp Hortmann <philipp.g.hortmann@...il.com>
To:     Michael Straube <straube.linux@...il.com>,
        gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: r8188eu: remove HW_VAR_MLME_SITESURVEY from
 SetHwReg8188EU()

On 7/11/22 19:44, Michael Straube wrote:
> Remove the HW_VAR_MLME_SITESURVEY case from SetHwReg8188EU() and move
> the functionality to two new functions in rtw_mlme_ext.c. This is part
> of the ongoing effort to get rid of SetHwReg8188EU().
> 
> Signed-off-by: Michael Straube <straube.linux@...il.com>
> ---
>   drivers/staging/r8188eu/core/rtw_mlme_ext.c   | 70 +++++++++++++++++--
>   drivers/staging/r8188eu/core/rtw_p2p.c        |  9 +--
>   drivers/staging/r8188eu/hal/usb_halinit.c     | 53 --------------
>   drivers/staging/r8188eu/include/hal_intf.h    |  1 -
>   .../staging/r8188eu/include/rtw_mlme_ext.h    |  3 +
>   5 files changed, 70 insertions(+), 66 deletions(-)
> 
> diff --git a/drivers/staging/r8188eu/core/rtw_mlme_ext.c b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
> index eecb00e41d6a..771910763fec 100644
> --- a/drivers/staging/r8188eu/core/rtw_mlme_ext.c
> +++ b/drivers/staging/r8188eu/core/rtw_mlme_ext.c
> @@ -5695,9 +5695,70 @@ static void rtw_set_initial_gain(struct adapter *adapter, u8 gain)
>   	}
>   }
>   
> +void rtw_mlme_under_site_survey(struct adapter *adapter)
> +{
> +	/* config RCR to receive different BSSID & not to receive data frame */
> +
> +	int res;
> +	u8 reg;
> +	u32 v;
> +
> +	res = rtw_read32(adapter, REG_RCR, &v);
> +	if (res)
> +		return;
> +
> +	v &= ~(RCR_CBSSID_BCN);
> +	rtw_write32(adapter, REG_RCR, v);
> +	/* reject all data frame */
> +	rtw_write16(adapter, REG_RXFLTMAP2, 0x00);
> +
> +	/* disable update TSF */
> +	res = rtw_read8(adapter, REG_BCN_CTRL, &reg);
> +	if (res)
> +		return;
> +
> +	rtw_write8(adapter, REG_BCN_CTRL, reg | BIT(4));
> +}
> +
> +void rtw_mlme_site_survey_done(struct adapter *adapter)
> +{
> +	struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
> +	struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
> +	u32 reg32;
> +	int res;
> +	u8 reg;
> +
> +	if ((is_client_associated_to_ap(adapter)) ||
> +	    ((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE)) {
> +		/* enable to rx data frame */
> +		rtw_write16(adapter, REG_RXFLTMAP2, 0xFFFF);
> +
> +		/* enable update TSF */
> +		res = rtw_read8(adapter, REG_BCN_CTRL, &reg);
> +		if (res)
> +			return;
> +
> +		rtw_write8(adapter, REG_BCN_CTRL, reg & (~BIT(4)));
> +	} else if ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE) {
> +		rtw_write16(adapter, REG_RXFLTMAP2, 0xFFFF);
> +		/* enable update TSF */
> +		res = rtw_read8(adapter, REG_BCN_CTRL, &reg);
> +		if (res)
> +			return;
> +
> +		rtw_write8(adapter, REG_BCN_CTRL, reg & (~BIT(4)));
> +	}
> +
> +	res = rtw_read32(adapter, REG_RCR, &reg32);
> +	if (res)
> +		return;
> +
> +	rtw_write32(adapter, REG_RCR, reg32 | RCR_CBSSID_BCN);
> +}
> +
>   void site_survey(struct adapter *padapter)
>   {
> -	unsigned char		survey_channel = 0, val8;
> +	unsigned char survey_channel = 0;
>   	enum rt_scan_type ScanType = SCAN_PASSIVE;
>   	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
>   	struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
> @@ -5821,8 +5882,7 @@ void site_survey(struct adapter *padapter)
>   			if (is_client_associated_to_ap(padapter))
>   				issue_nulldata(padapter, NULL, 0, 3, 500);
>   
> -			val8 = 0; /* survey done */
> -			SetHwReg8188EU(padapter, HW_VAR_MLME_SITESURVEY, (u8 *)(&val8));
> +			rtw_mlme_site_survey_done(padapter);
>   
>   			report_surveydone_event(padapter);
>   
> @@ -7343,7 +7403,6 @@ u8 sitesurvey_cmd_hdl(struct adapter *padapter, u8 *pbuf)
>   	struct mlme_ext_priv	*pmlmeext = &padapter->mlmeextpriv;
>   	struct sitesurvey_parm	*pparm = (struct sitesurvey_parm *)pbuf;
>   	u8 bdelayscan = false;
> -	u8 val8;
>   	u32	i;
>   	struct wifidirect_info *pwdinfo = &padapter->wdinfo;
>   
> @@ -7400,8 +7459,7 @@ u8 sitesurvey_cmd_hdl(struct adapter *padapter, u8 *pbuf)
>   		/* set MSR to no link state */
>   		Set_MSR(padapter, _HW_STATE_NOLINK_);
>   
> -		val8 = 1; /* under site survey */
> -		SetHwReg8188EU(padapter, HW_VAR_MLME_SITESURVEY, (u8 *)(&val8));
> +		rtw_mlme_under_site_survey(padapter);
>   
>   		pmlmeext->sitesurvey_res.state = SCAN_PROCESS;
>   	}
> diff --git a/drivers/staging/r8188eu/core/rtw_p2p.c b/drivers/staging/r8188eu/core/rtw_p2p.c
> index beffe5b16f1e..c306aafa183b 100644
> --- a/drivers/staging/r8188eu/core/rtw_p2p.c
> +++ b/drivers/staging/r8188eu/core/rtw_p2p.c
> @@ -1450,10 +1450,9 @@ static void restore_p2p_state_handler(struct adapter *padapter)
>   static void pre_tx_invitereq_handler(struct adapter *padapter)
>   {
>   	struct wifidirect_info  *pwdinfo = &padapter->wdinfo;
> -	u8	val8 = 1;
>   
>   	set_channel_bwmode(padapter, pwdinfo->invitereq_info.peer_ch, HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
> -	SetHwReg8188EU(padapter, HW_VAR_MLME_SITESURVEY, (u8 *)(&val8));
> +	rtw_mlme_under_site_survey(padapter);
>   	issue_probereq_p2p(padapter, NULL);
>   	_set_timer(&pwdinfo->pre_tx_scan_timer, P2P_TX_PRESCAN_TIMEOUT);
>   
> @@ -1462,10 +1461,9 @@ static void pre_tx_invitereq_handler(struct adapter *padapter)
>   static void pre_tx_provdisc_handler(struct adapter *padapter)
>   {
>   	struct wifidirect_info  *pwdinfo = &padapter->wdinfo;
> -	u8	val8 = 1;
>   
>   	set_channel_bwmode(padapter, pwdinfo->tx_prov_disc_info.peer_channel_num[0], HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
> -	SetHwReg8188EU(padapter, HW_VAR_MLME_SITESURVEY, (u8 *)(&val8));
> +	rtw_mlme_under_site_survey(padapter);
>   	issue_probereq_p2p(padapter, NULL);
>   	_set_timer(&pwdinfo->pre_tx_scan_timer, P2P_TX_PRESCAN_TIMEOUT);
>   
> @@ -1474,10 +1472,9 @@ static void pre_tx_provdisc_handler(struct adapter *padapter)
>   static void pre_tx_negoreq_handler(struct adapter *padapter)
>   {
>   	struct wifidirect_info  *pwdinfo = &padapter->wdinfo;
> -	u8	val8 = 1;
>   
>   	set_channel_bwmode(padapter, pwdinfo->nego_req_info.peer_channel_num[0], HAL_PRIME_CHNL_OFFSET_DONT_CARE, HT_CHANNEL_WIDTH_20);
> -	SetHwReg8188EU(padapter, HW_VAR_MLME_SITESURVEY, (u8 *)(&val8));
> +	rtw_mlme_under_site_survey(padapter);
>   	issue_probereq_p2p(padapter, NULL);
>   	_set_timer(&pwdinfo->pre_tx_scan_timer, P2P_TX_PRESCAN_TIMEOUT);
>   
> diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c
> index 6b0337c09915..68d012a442a8 100644
> --- a/drivers/staging/r8188eu/hal/usb_halinit.c
> +++ b/drivers/staging/r8188eu/hal/usb_halinit.c
> @@ -1104,59 +1104,6 @@ void SetHwReg8188EU(struct adapter *Adapter, u8 variable, u8 *val)
>   				ResumeTxBeacon(Adapter);
>   		}
>   		break;
> -	case HW_VAR_MLME_SITESURVEY:
> -		if (*((u8 *)val)) { /* under sitesurvey */
> -			/* config RCR to receive different BSSID & not to receive data frame */
> -			u32 v;
> -
> -			res = rtw_read32(Adapter, REG_RCR, &v);
> -			if (res)
> -				return;
> -
> -			v &= ~(RCR_CBSSID_BCN);
> -			rtw_write32(Adapter, REG_RCR, v);
> -			/* reject all data frame */
> -			rtw_write16(Adapter, REG_RXFLTMAP2, 0x00);
> -
> -			/* disable update TSF */
> -			res = rtw_read8(Adapter, REG_BCN_CTRL, &reg);
> -			if (res)
> -				return;
> -
> -			rtw_write8(Adapter, REG_BCN_CTRL, reg | BIT(4));
> -		} else { /* sitesurvey done */
> -			struct mlme_ext_priv	*pmlmeext = &Adapter->mlmeextpriv;
> -			struct mlme_ext_info	*pmlmeinfo = &pmlmeext->mlmext_info;
> -			u32 reg32;
> -
> -			if ((is_client_associated_to_ap(Adapter)) ||
> -			    ((pmlmeinfo->state & 0x03) == WIFI_FW_ADHOC_STATE)) {
> -				/* enable to rx data frame */
> -				rtw_write16(Adapter, REG_RXFLTMAP2, 0xFFFF);
> -
> -				/* enable update TSF */
> -				res = rtw_read8(Adapter, REG_BCN_CTRL, &reg);
> -				if (res)
> -					return;
> -
> -				rtw_write8(Adapter, REG_BCN_CTRL, reg & (~BIT(4)));
> -			} else if ((pmlmeinfo->state & 0x03) == WIFI_FW_AP_STATE) {
> -				rtw_write16(Adapter, REG_RXFLTMAP2, 0xFFFF);
> -				/* enable update TSF */
> -				res = rtw_read8(Adapter, REG_BCN_CTRL, &reg);
> -				if (res)
> -					return;
> -
> -				rtw_write8(Adapter, REG_BCN_CTRL, reg & (~BIT(4)));
> -			}
> -
> -			res = rtw_read32(Adapter, REG_RCR, &reg32);
> -			if (res)
> -				return;
> -
> -			rtw_write32(Adapter, REG_RCR, reg32 | RCR_CBSSID_BCN);
> -		}
> -		break;
>   	default:
>   		break;
>   	}
> diff --git a/drivers/staging/r8188eu/include/hal_intf.h b/drivers/staging/r8188eu/include/hal_intf.h
> index 24bbba2cb7cf..819d0dc6e6dc 100644
> --- a/drivers/staging/r8188eu/include/hal_intf.h
> +++ b/drivers/staging/r8188eu/include/hal_intf.h
> @@ -11,7 +11,6 @@
>   enum hw_variables {
>   	HW_VAR_SET_OPMODE,
>   	HW_VAR_CORRECT_TSF,
> -	HW_VAR_MLME_SITESURVEY,
>   };
>   
>   typedef s32 (*c2h_id_filter)(u8 id);
> diff --git a/drivers/staging/r8188eu/include/rtw_mlme_ext.h b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
> index 3cc475aa912a..c630700ea657 100644
> --- a/drivers/staging/r8188eu/include/rtw_mlme_ext.h
> +++ b/drivers/staging/r8188eu/include/rtw_mlme_ext.h
> @@ -424,6 +424,9 @@ void invalidate_cam_all(struct adapter *padapter);
>   int allocate_fw_sta_entry(struct adapter *padapter);
>   void flush_all_cam_entry(struct adapter *padapter);
>   
> +void rtw_mlme_under_site_survey(struct adapter *adapter);
> +void rtw_mlme_site_survey_done(struct adapter *adapter);
> +
>   void site_survey(struct adapter *padapter);
>   u8 collect_bss_info(struct adapter *padapter, struct recv_frame *precv_frame,
>   		    struct wlan_bssid_ex *bssid);


Tested-by: Philipp Hortmann <philipp.g.hortmann@...il.com> # Edimax N150

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