From patchwork Wed Jun 3 09:38:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Chuang X-Patchwork-Id: 11585427 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D6F7414F6 for ; Wed, 3 Jun 2020 09:38:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C6944205CB for ; Wed, 3 Jun 2020 09:38:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726597AbgFCJia (ORCPT ); Wed, 3 Jun 2020 05:38:30 -0400 Received: from rtits2.realtek.com ([211.75.126.72]:42243 "EHLO rtits2.realtek.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725954AbgFCJi2 (ORCPT ); Wed, 3 Jun 2020 05:38:28 -0400 Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.69 with qID 0539c9nZ5011911, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexmb06.realtek.com.tw[172.21.6.99]) by rtits2.realtek.com.tw (8.15.2/2.66/5.86) with ESMTPS id 0539c9nZ5011911 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT); Wed, 3 Jun 2020 17:38:09 +0800 Received: from RTEXMB04.realtek.com.tw (172.21.6.97) by RTEXMB06.realtek.com.tw (172.21.6.99) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Wed, 3 Jun 2020 17:38:09 +0800 Received: from localhost.localdomain (172.21.68.128) by RTEXMB04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Wed, 3 Jun 2020 17:38:08 +0800 From: To: CC: , , Subject: [PATCH v3 5/7] rtw88: 8821c: add query rx desc support Date: Wed, 3 Jun 2020 17:38:02 +0800 Message-ID: <20200603093804.19779-6-yhchuang@realtek.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200603093804.19779-1-yhchuang@realtek.com> References: <20200603093804.19779-1-yhchuang@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.68.128] X-ClientProxiedBy: RTEXMB02.realtek.com.tw (172.21.6.95) To RTEXMB04.realtek.com.tw (172.21.6.97) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Tzu-En Huang Some RX packets contain also information about environment status. Implement rtw_chip_ops::query_rx_desc() for 8821c. Parse the RX descriptor which describes the current condition of the received packet. Signed-off-by: Tzu-En Huang Signed-off-by: Yan-Hsuan Chuang --- drivers/net/wireless/realtek/rtw88/rtw8821c.c | 101 ++++++++++++++++++ drivers/net/wireless/realtek/rtw88/rtw8821c.h | 16 +++ 2 files changed, 117 insertions(+) diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821c.c b/drivers/net/wireless/realtek/rtw88/rtw8821c.c index 4c27d28a9f9d..bf1a2c92f2a5 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8821c.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.c @@ -373,6 +373,106 @@ static void rtw8821c_set_channel(struct rtw_dev *rtwdev, u8 channel, u8 bw, rtw8821c_set_channel_rxdfir(rtwdev, bw); } +static void query_phy_status_page0(struct rtw_dev *rtwdev, u8 *phy_status, + struct rtw_rx_pkt_stat *pkt_stat) +{ + s8 min_rx_power = -120; + u8 pwdb = GET_PHY_STAT_P0_PWDB(phy_status); + + pkt_stat->rx_power[RF_PATH_A] = pwdb - 100; + pkt_stat->rssi = rtw_phy_rf_power_2_rssi(pkt_stat->rx_power, 1); + pkt_stat->bw = RTW_CHANNEL_WIDTH_20; + pkt_stat->signal_power = max(pkt_stat->rx_power[RF_PATH_A], + min_rx_power); +} + +static void query_phy_status_page1(struct rtw_dev *rtwdev, u8 *phy_status, + struct rtw_rx_pkt_stat *pkt_stat) +{ + u8 rxsc, bw; + s8 min_rx_power = -120; + + if (pkt_stat->rate > DESC_RATE11M && pkt_stat->rate < DESC_RATEMCS0) + rxsc = GET_PHY_STAT_P1_L_RXSC(phy_status); + else + rxsc = GET_PHY_STAT_P1_HT_RXSC(phy_status); + + if (rxsc >= 1 && rxsc <= 8) + bw = RTW_CHANNEL_WIDTH_20; + else if (rxsc >= 9 && rxsc <= 12) + bw = RTW_CHANNEL_WIDTH_40; + else if (rxsc >= 13) + bw = RTW_CHANNEL_WIDTH_80; + else + bw = GET_PHY_STAT_P1_RF_MODE(phy_status); + + pkt_stat->rx_power[RF_PATH_A] = GET_PHY_STAT_P1_PWDB_A(phy_status) - 110; + pkt_stat->rssi = rtw_phy_rf_power_2_rssi(pkt_stat->rx_power, 1); + pkt_stat->bw = bw; + pkt_stat->signal_power = max(pkt_stat->rx_power[RF_PATH_A], + min_rx_power); +} + +static void query_phy_status(struct rtw_dev *rtwdev, u8 *phy_status, + struct rtw_rx_pkt_stat *pkt_stat) +{ + u8 page; + + page = *phy_status & 0xf; + + switch (page) { + case 0: + query_phy_status_page0(rtwdev, phy_status, pkt_stat); + break; + case 1: + query_phy_status_page1(rtwdev, phy_status, pkt_stat); + break; + default: + rtw_warn(rtwdev, "unused phy status page (%d)\n", page); + return; + } +} + +static void rtw8821c_query_rx_desc(struct rtw_dev *rtwdev, u8 *rx_desc, + struct rtw_rx_pkt_stat *pkt_stat, + struct ieee80211_rx_status *rx_status) +{ + struct ieee80211_hdr *hdr; + u32 desc_sz = rtwdev->chip->rx_pkt_desc_sz; + u8 *phy_status = NULL; + + memset(pkt_stat, 0, sizeof(*pkt_stat)); + + pkt_stat->phy_status = GET_RX_DESC_PHYST(rx_desc); + pkt_stat->icv_err = GET_RX_DESC_ICV_ERR(rx_desc); + pkt_stat->crc_err = GET_RX_DESC_CRC32(rx_desc); + pkt_stat->decrypted = !GET_RX_DESC_SWDEC(rx_desc); + pkt_stat->is_c2h = GET_RX_DESC_C2H(rx_desc); + pkt_stat->pkt_len = GET_RX_DESC_PKT_LEN(rx_desc); + pkt_stat->drv_info_sz = GET_RX_DESC_DRV_INFO_SIZE(rx_desc); + pkt_stat->shift = GET_RX_DESC_SHIFT(rx_desc); + pkt_stat->rate = GET_RX_DESC_RX_RATE(rx_desc); + pkt_stat->cam_id = GET_RX_DESC_MACID(rx_desc); + pkt_stat->ppdu_cnt = GET_RX_DESC_PPDU_CNT(rx_desc); + pkt_stat->tsf_low = GET_RX_DESC_TSFL(rx_desc); + + /* drv_info_sz is in unit of 8-bytes */ + pkt_stat->drv_info_sz *= 8; + + /* c2h cmd pkt's rx/phy status is not interested */ + if (pkt_stat->is_c2h) + return; + + hdr = (struct ieee80211_hdr *)(rx_desc + desc_sz + pkt_stat->shift + + pkt_stat->drv_info_sz); + if (pkt_stat->phy_status) { + phy_status = rx_desc + desc_sz + pkt_stat->shift; + query_phy_status(rtwdev, phy_status, pkt_stat); + } + + rtw_rx_fill_rx_status(rtwdev, pkt_stat, hdr, rx_status, phy_status); +} + static void rtw8821c_set_tx_power_index_by_rate(struct rtw_dev *rtwdev, u8 path, u8 rs) { @@ -840,6 +940,7 @@ static struct rtw_prioq_addrs prioq_addrs_8821c = { static struct rtw_chip_ops rtw8821c_ops = { .phy_set_param = rtw8821c_phy_set_param, .read_efuse = rtw8821c_read_efuse, + .query_rx_desc = rtw8821c_query_rx_desc, .set_channel = rtw8821c_set_channel, .mac_init = rtw8821c_mac_init, .read_rf = rtw_phy_read_rf, diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821c.h b/drivers/net/wireless/realtek/rtw88/rtw8821c.h index 2d33f6e50cea..741f78829c17 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8821c.h +++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.h @@ -145,6 +145,22 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data) #define WLAN_RX_TSF_CFG (WLAN_CCK_RX_TSF | (WLAN_OFDM_RX_TSF) << 8) #define WLAN_PRE_TXCNT_TIME_TH 0x1E4 +/* phy status page0 */ +#define GET_PHY_STAT_P0_PWDB(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x00), GENMASK(15, 8)) + +/* phy status page1 */ +#define GET_PHY_STAT_P1_PWDB_A(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x00), GENMASK(15, 8)) +#define GET_PHY_STAT_P1_PWDB_B(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x00), GENMASK(23, 16)) +#define GET_PHY_STAT_P1_RF_MODE(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x03), GENMASK(29, 28)) +#define GET_PHY_STAT_P1_L_RXSC(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x01), GENMASK(11, 8)) +#define GET_PHY_STAT_P1_HT_RXSC(phy_stat) \ + le32_get_bits(*((__le32 *)(phy_stat) + 0x01), GENMASK(15, 12)) + #define REG_INIRTS_RATE_SEL 0x0480 #define REG_HTSTFWT 0x800 #define REG_RXPSEL 0x808