From patchwork Fri Aug 19 06:48:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ping-Ke Shih X-Patchwork-Id: 12948434 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F0BAC32771 for ; Fri, 19 Aug 2022 06:48:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346548AbiHSGss (ORCPT ); Fri, 19 Aug 2022 02:48:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229601AbiHSGsq (ORCPT ); Fri, 19 Aug 2022 02:48:46 -0400 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id E76AD4D829 for ; Thu, 18 Aug 2022 23:48:41 -0700 (PDT) Authenticated-By: X-SpamFilter-By: ArmorX SpamTrap 5.77 with qID 27J6mHsS5001751, This message is accepted by code: ctloc85258 Received: from mail.realtek.com (rtexh36504.realtek.com.tw[172.21.6.27]) by rtits2.realtek.com.tw (8.15.2/2.81/5.90) with ESMTPS id 27J6mHsS5001751 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Fri, 19 Aug 2022 14:48:17 +0800 Received: from RTEXMBS04.realtek.com.tw (172.21.6.97) by RTEXH36504.realtek.com.tw (172.21.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Fri, 19 Aug 2022 14:48:30 +0800 Received: from localhost (172.21.69.188) by RTEXMBS04.realtek.com.tw (172.21.6.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.7; Fri, 19 Aug 2022 14:48:29 +0800 From: Ping-Ke Shih To: CC: , , , Subject: [PATCH v2 3/5] wifi: rtw89: pci: fix PCI PHY auto adaption by using software restore Date: Fri, 19 Aug 2022 14:48:09 +0800 Message-ID: <20220819064811.37700-4-pkshih@realtek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220819064811.37700-1-pkshih@realtek.com> References: <20220819064811.37700-1-pkshih@realtek.com> MIME-Version: 1.0 X-Originating-IP: [172.21.69.188] X-ClientProxiedBy: RTEXMBS02.realtek.com.tw (172.21.6.95) To RTEXMBS04.realtek.com.tw (172.21.6.97) X-KSE-ServerInfo: RTEXMBS04.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: trusted connection X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Deterministic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 08/19/2022 06:25:00 X-KSE-AttachmentFiltering-Interceptor-Info: no applicable attachment filtering rules found X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: =?big5_tw?b?Q2xlYW4sIGJhc2VzOiAyMDIyLzgvMTkgpFekyCAwMTo1?= =?big5_tw?b?MzowMA==?= X-KSE-BulkMessagesFiltering-Scan-Result: protection disabled X-KSE-ServerInfo: RTEXH36504.realtek.com.tw, 9 X-KSE-AntiSpam-Interceptor-Info: fallback X-KSE-Antivirus-Interceptor-Info: fallback X-KSE-AntiSpam-Interceptor-Info: fallback Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Chia-Yuan Li There is chance that PCI PHY auto adaption fail. When first time boot up, software restore the right adaption value and close PHY auto adaption mechanism. Signed-off-by: Chia-Yuan Li Signed-off-by: Ping-Ke Shih --- drivers/net/wireless/realtek/rtw89/pci.c | 71 ++++++++++++++++++++++++ drivers/net/wireless/realtek/rtw89/pci.h | 29 +++++++++- drivers/net/wireless/realtek/rtw89/reg.h | 12 ++++ 3 files changed, 110 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c index c68fec9eb5a64..c09d2ffc5005f 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.c +++ b/drivers/net/wireless/realtek/rtw89/pci.c @@ -3219,6 +3219,76 @@ static void rtw89_pci_free_irq(struct rtw89_dev *rtwdev, pci_free_irq_vectors(pdev); } +static u16 gray_code_to_bin(u16 gray_code, u32 bit_num) +{ + u16 bin = 0, gray_bit; + u32 bit_idx; + + for (bit_idx = 0; bit_idx < bit_num; bit_idx++) { + gray_bit = (gray_code >> bit_idx) & 0x1; + if (bit_num - bit_idx > 1) + gray_bit ^= (gray_code >> (bit_idx + 1)) & 0x1; + bin |= (gray_bit << bit_idx); + } + + return bin; +} + +static int rtw89_pci_filter_out(struct rtw89_dev *rtwdev) +{ + struct rtw89_pci *rtwpci = (struct rtw89_pci *)rtwdev->priv; + struct pci_dev *pdev = rtwpci->pdev; + u16 val16, filter_out_val; + u32 val, phy_offset; + int ret; + + if (rtwdev->chip->chip_id != RTL8852C) + return 0; + + val = rtw89_read32_mask(rtwdev, R_AX_PCIE_MIX_CFG_V1, B_AX_ASPM_CTRL_MASK); + if (val == B_AX_ASPM_CTRL_L1) + return 0; + + ret = pci_read_config_dword(pdev, RTW89_PCIE_L1_STS_V1, &val); + if (ret) + return ret; + + val = FIELD_GET(RTW89_BCFG_LINK_SPEED_MASK, val); + if (val == RTW89_PCIE_GEN1_SPEED) { + phy_offset = R_RAC_DIRECT_OFFSET_G1; + } else if (val == RTW89_PCIE_GEN2_SPEED) { + phy_offset = R_RAC_DIRECT_OFFSET_G2; + val16 = rtw89_read16(rtwdev, phy_offset + RAC_ANA10 * RAC_MULT); + rtw89_write16_set(rtwdev, phy_offset + RAC_ANA10 * RAC_MULT, + val16 | B_PCIE_BIT_PINOUT_DIS); + rtw89_write16_set(rtwdev, phy_offset + RAC_ANA19 * RAC_MULT, + val16 & ~B_PCIE_BIT_RD_SEL); + + val16 = rtw89_read16_mask(rtwdev, + phy_offset + RAC_ANA1F * RAC_MULT, + FILTER_OUT_EQ_MASK); + val16 = gray_code_to_bin(val16, hweight16(val16)); + filter_out_val = rtw89_read16(rtwdev, phy_offset + RAC_ANA24 * + RAC_MULT); + filter_out_val &= ~REG_FILTER_OUT_MASK; + filter_out_val |= FIELD_PREP(REG_FILTER_OUT_MASK, val16); + + rtw89_write16(rtwdev, phy_offset + RAC_ANA24 * RAC_MULT, + filter_out_val); + rtw89_write16_set(rtwdev, phy_offset + RAC_ANA0A * RAC_MULT, + B_BAC_EQ_SEL); + rtw89_write16_set(rtwdev, + R_RAC_DIRECT_OFFSET_G1 + RAC_ANA0C * RAC_MULT, + B_PCIE_BIT_PSAVE); + } else { + return -EOPNOTSUPP; + } + rtw89_write16_set(rtwdev, phy_offset + RAC_ANA0C * RAC_MULT, + B_PCIE_BIT_PSAVE); + + return 0; +} + static void rtw89_pci_clkreq_set(struct rtw89_dev *rtwdev, bool enable) { int ret; @@ -3667,6 +3737,7 @@ int rtw89_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_clear_resource; } + rtw89_pci_filter_out(rtwdev); rtw89_pci_link_cfg(rtwdev); rtw89_pci_l1ss_cfg(rtwdev); diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h index a118647213e35..e80380271cd35 100644 --- a/drivers/net/wireless/realtek/rtw89/pci.h +++ b/drivers/net/wireless/realtek/rtw89/pci.h @@ -11,11 +11,18 @@ #define MDIO_PG1_G1 1 #define MDIO_PG0_G2 2 #define MDIO_PG1_G2 3 +#define RAC_CTRL_PPR 0x00 +#define RAC_ANA0A 0x0A +#define B_BAC_EQ_SEL BIT(5) +#define RAC_ANA0C 0x0C +#define B_PCIE_BIT_PSAVE BIT(15) #define RAC_ANA10 0x10 +#define B_PCIE_BIT_PINOUT_DIS BIT(3) #define RAC_REG_REV2 0x1B #define BAC_CMU_EN_DLY_MASK GENMASK(15, 12) #define PCIE_DPHY_DLY_25US 0x1 #define RAC_ANA19 0x19 +#define B_PCIE_BIT_RD_SEL BIT(2) #define RAC_ANA1F 0x1F #define RAC_ANA24 0x24 #define B_AX_DEGLITCH GENMASK(11, 8) @@ -45,6 +52,16 @@ #define B_AX_SEL_REQ_ENTR_L1 BIT(2) #define B_AX_SEL_REQ_EXIT_L1 BIT(0) +#define R_AX_PCIE_MIX_CFG_V1 0x300C +#define B_AX_ASPM_CTRL_L1 BIT(17) +#define B_AX_ASPM_CTRL_L0 BIT(16) +#define B_AX_ASPM_CTRL_MASK GENMASK(17, 16) +#define B_AX_XFER_PENDING_FW BIT(11) +#define B_AX_XFER_PENDING BIT(10) +#define B_AX_REQ_EXIT_L1 BIT(9) +#define B_AX_REQ_ENTR_L1 BIT(8) +#define B_AX_L1SUB_DISABLE BIT(0) + #define R_AX_PCIE_BG_CLR 0x303C #define B_AX_BG_CLR_ASYNC_M3 BIT(4) @@ -88,7 +105,10 @@ #define B_AX_PCIE_WDT_TIMER_S1_MASK GENMASK(31, 0) #define R_RAC_DIRECT_OFFSET_G1 0x3800 +#define FILTER_OUT_EQ_MASK GENMASK(14, 10) #define R_RAC_DIRECT_OFFSET_G2 0x3880 +#define REG_FILTER_OUT_MASK GENMASK(6, 2) +#define RAC_MULT 2 #define RTW89_PCI_WR_RETRY_CNT 20 @@ -505,6 +525,12 @@ #define RTW89_PCI_MULTITAG 8 /* PCIE CFG register */ +#define RTW89_PCIE_L1_STS_V1 0x80 +#define RTW89_BCFG_LINK_SPEED_MASK GENMASK(19, 16) +#define RTW89_PCIE_GEN1_SPEED 0x01 +#define RTW89_PCIE_GEN2_SPEED 0x02 +#define RTW89_PCIE_PHY_RATE 0x82 +#define RTW89_PCIE_PHY_RATE_MASK GENMASK(1, 0) #define RTW89_PCIE_ASPM_CTRL 0x070F #define RTW89_L1DLY_MASK GENMASK(5, 3) #define RTW89_L0DLY_MASK GENMASK(2, 0) @@ -516,8 +542,7 @@ #define RTW89_PCIE_CLK_CTRL 0x0725 #define RTW89_PCIE_RST_MSTATE 0x0B48 #define RTW89_PCIE_BIT_CFG_RST_MSTATE BIT(0) -#define RTW89_PCIE_PHY_RATE 0x82 -#define RTW89_PCIE_PHY_RATE_MASK GENMASK(1, 0) + #define INTF_INTGRA_MINREF_V1 90 #define INTF_INTGRA_HOSTREF_V1 100 diff --git a/drivers/net/wireless/realtek/rtw89/reg.h b/drivers/net/wireless/realtek/rtw89/reg.h index 497c1e9263fc0..f55ea3f834f89 100644 --- a/drivers/net/wireless/realtek/rtw89/reg.h +++ b/drivers/net/wireless/realtek/rtw89/reg.h @@ -143,6 +143,18 @@ #define R_AX_PMC_DBG_CTRL2 0x00CC #define B_AX_SYSON_DIS_PMCR_AX_WRMSK BIT(2) +#define R_AX_PCIE_MIO_INTF 0x00E4 +#define B_AX_PCIE_MIO_ADDR_PAGE_V1_MASK GENMASK(20, 16) +#define B_AX_PCIE_MIO_BYIOREG BIT(13) +#define B_AX_PCIE_MIO_RE BIT(12) +#define B_AX_PCIE_MIO_WE_MASK GENMASK(11, 8) +#define MIO_WRITE_BYTE_ALL 0xF +#define B_AX_PCIE_MIO_ADDR_MASK GENMASK(7, 0) +#define MIO_ADDR_PAGE_MASK GENMASK(12, 8) + +#define R_AX_PCIE_MIO_INTD 0x00E8 +#define B_AX_PCIE_MIO_DATA_MASK GENMASK(31, 0) + #define R_AX_SYS_CFG1 0x00F0 #define B_AX_CHIP_VER_MASK GENMASK(15, 12)