From patchwork Fri Jul 22 09:24:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arun Ramadoss X-Patchwork-Id: 12926208 X-Patchwork-Delegate: kuba@kernel.org 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 B9192C433EF for ; Fri, 22 Jul 2022 09:37:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236596AbiGVJhe (ORCPT ); Fri, 22 Jul 2022 05:37:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236580AbiGVJhL (ORCPT ); Fri, 22 Jul 2022 05:37:11 -0400 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63565C5D59; Fri, 22 Jul 2022 02:25:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1658481960; x=1690017960; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Zz1aJ3Do4fgmEKpEF07fhJpvHv35KSHv+N3Bga4dLTc=; b=rzlD1wuUiNbsu15JZiQyyAmgfhW7lskpY4aWlbxTGiXHiRHg9neYujPx UJsD45wT2Xlp0wwtGV3dQxRCypGkX6HH1ascmNfSlokI9AZmrwpe5rN60 eho1bOIVlY3BEZWCrJrkfIIWuvHoHme4KI+11edQKDgSY5YBb/ytoEpSF +4PORZJjm6Q/+ryIyKzoT9HaRG/wW6tgD+waWOZpDiirVi7OC0SfHratB b538OYWLTXLqlscwW4ORfoi3dapsdYNN/AD9a1vGE31JbT5yP7kRuef8m yKQfJWa6ODGlJFaDX0r+oB/r2jMZjceFHJ3g4m7c/kZ4EDDxJnMVx7HV2 g==; X-IronPort-AV: E=Sophos;i="5.93,185,1654585200"; d="scan'208";a="165939341" Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa4.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 22 Jul 2022 02:25:58 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Fri, 22 Jul 2022 02:25:56 -0700 Received: from CHE-LT-I17769U.microchip.com (10.10.115.15) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2375.17 via Frontend Transport; Fri, 22 Jul 2022 02:25:52 -0700 From: Arun Ramadoss To: , CC: Woojung Huh , , Andrew Lunn , Vivien Didelot , Florian Fainelli , Vladimir Oltean , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , "Arun Ramadoss" , Russell King Subject: [Patch net-next v1 2/9] net: dsa: microchip: add common ksz port xmii speed selection function Date: Fri, 22 Jul 2022 14:54:52 +0530 Message-ID: <20220722092459.18653-3-arun.ramadoss@microchip.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220722092459.18653-1-arun.ramadoss@microchip.com> References: <20220722092459.18653-1-arun.ramadoss@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This patch adds the function for configuring the 100/10Mbps speed selection for the ksz switches. KSZ8795 switch uses Global control 4 register 0x06 bit 4 for choosing 100/10Mpbs. Other switches uses xMII control 1 0xN300 for it. For KSZ8795, if the bit is set then 10Mbps is chosen and if bit is clear then 100Mbps chosen. For all other switches it is other way around, if the bit is set then 100Mbps is chosen. So, this patch add the generic function for ksz switch to select the 100/10Mbps speed selection. While configuring, first it disables the gigabit functionality and then configure the respective speed. Signed-off-by: Arun Ramadoss --- drivers/net/dsa/microchip/ksz9477_reg.h | 1 - drivers/net/dsa/microchip/ksz_common.c | 54 ++++++++++++++++++++++++ drivers/net/dsa/microchip/ksz_common.h | 10 +++++ drivers/net/dsa/microchip/lan937x_main.c | 18 +++----- drivers/net/dsa/microchip/lan937x_reg.h | 1 - 5 files changed, 69 insertions(+), 15 deletions(-) diff --git a/drivers/net/dsa/microchip/ksz9477_reg.h b/drivers/net/dsa/microchip/ksz9477_reg.h index f23ed4809e47..2649fdf0bae1 100644 --- a/drivers/net/dsa/microchip/ksz9477_reg.h +++ b/drivers/net/dsa/microchip/ksz9477_reg.h @@ -1179,7 +1179,6 @@ #define PORT_SGMII_SEL BIT(7) #define PORT_MII_FULL_DUPLEX BIT(6) -#define PORT_MII_100MBIT BIT(4) #define PORT_GRXC_ENABLE BIT(0) #define REG_PORT_XMII_CTRL_1 0x0301 diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 343381102cbf..85392d3b1c2b 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -257,6 +257,7 @@ static const u16 ksz8795_regs[] = { [S_START_CTRL] = 0x01, [S_BROADCAST_CTRL] = 0x06, [S_MULTICAST_CTRL] = 0x04, + [P_XMII_CTRL_0] = 0x06, [P_XMII_CTRL_1] = 0x56, }; @@ -282,6 +283,11 @@ static const u32 ksz8795_masks[] = { [DYNAMIC_MAC_TABLE_TIMESTAMP] = GENMASK(28, 27), }; +static const u8 ksz8795_xmii_ctrl0[] = { + [P_MII_100MBIT] = 0, + [P_MII_10MBIT] = 1, +}; + static const u8 ksz8795_xmii_ctrl1[] = { [P_GMII_1GBIT] = 1, [P_GMII_NOT_1GBIT] = 0, @@ -357,6 +363,7 @@ static const u16 ksz9477_regs[] = { [S_START_CTRL] = 0x0300, [S_BROADCAST_CTRL] = 0x0332, [S_MULTICAST_CTRL] = 0x0331, + [P_XMII_CTRL_0] = 0x0300, [P_XMII_CTRL_1] = 0x0301, }; @@ -369,6 +376,11 @@ static const u8 ksz9477_shifts[] = { [ALU_STAT_INDEX] = 16, }; +static const u8 ksz9477_xmii_ctrl0[] = { + [P_MII_100MBIT] = 1, + [P_MII_10MBIT] = 0, +}; + static const u8 ksz9477_xmii_ctrl1[] = { [P_GMII_1GBIT] = 0, [P_GMII_NOT_1GBIT] = 1, @@ -400,6 +412,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz8795_regs, .masks = ksz8795_masks, .shifts = ksz8795_shifts, + .xmii_ctrl0 = ksz8795_xmii_ctrl0, .xmii_ctrl1 = ksz8795_xmii_ctrl1, .supports_mii = {false, false, false, false, true}, .supports_rmii = {false, false, false, false, true}, @@ -437,6 +450,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz8795_regs, .masks = ksz8795_masks, .shifts = ksz8795_shifts, + .xmii_ctrl0 = ksz8795_xmii_ctrl0, .xmii_ctrl1 = ksz8795_xmii_ctrl1, .supports_mii = {false, false, false, false, true}, .supports_rmii = {false, false, false, false, true}, @@ -460,6 +474,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz8795_regs, .masks = ksz8795_masks, .shifts = ksz8795_shifts, + .xmii_ctrl0 = ksz8795_xmii_ctrl0, .xmii_ctrl1 = ksz8795_xmii_ctrl1, .supports_mii = {false, false, false, false, true}, .supports_rmii = {false, false, false, false, true}, @@ -503,6 +518,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = ksz9477_masks, .shifts = ksz9477_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, false, true, false}, @@ -530,6 +546,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = ksz9477_masks, .shifts = ksz9477_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, false, true, true}, @@ -556,6 +573,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = ksz9477_masks, .shifts = ksz9477_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz8795_xmii_ctrl1, /* Same as ksz8795 */ .supports_mii = {false, false, true}, .supports_rmii = {false, false, true}, @@ -579,6 +597,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = ksz9477_masks, .shifts = ksz9477_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, false, true, true}, @@ -605,6 +624,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = lan937x_masks, .shifts = lan937x_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, true}, .supports_rmii = {false, false, false, false, true}, @@ -627,6 +647,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = lan937x_masks, .shifts = lan937x_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, true, true}, .supports_rmii = {false, false, false, false, true, true}, @@ -649,6 +670,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = lan937x_masks, .shifts = lan937x_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, true, true, false, false}, @@ -675,6 +697,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = lan937x_masks, .shifts = lan937x_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, true, true, false, false}, @@ -701,6 +724,7 @@ const struct ksz_chip_data ksz_switch_chips[] = { .regs = ksz9477_regs, .masks = lan937x_masks, .shifts = lan937x_shifts, + .xmii_ctrl0 = ksz9477_xmii_ctrl0, .xmii_ctrl1 = ksz9477_xmii_ctrl1, .supports_mii = {false, false, false, false, true, true, false, false}, @@ -1414,6 +1438,36 @@ void ksz_set_gbit(struct ksz_device *dev, int port, bool gbit) ksz_pwrite8(dev, port, regs[P_XMII_CTRL_1], data8); } +static void ksz_set_100_10mbit(struct ksz_device *dev, int port, int speed) +{ + const u8 *bitval = dev->info->xmii_ctrl0; + const u16 *regs = dev->info->regs; + u8 data8; + + ksz_pread8(dev, port, regs[P_XMII_CTRL_0], &data8); + + data8 &= ~P_MII_100MBIT_M; + + if (speed == SPEED_100) + data8 |= FIELD_PREP(P_MII_100MBIT_M, bitval[P_MII_100MBIT]); + else + data8 |= FIELD_PREP(P_MII_100MBIT_M, bitval[P_MII_10MBIT]); + + /* Write the updated value */ + ksz_pwrite8(dev, port, regs[P_XMII_CTRL_0], data8); +} + +void ksz_port_set_xmii_speed(struct ksz_device *dev, int port, int speed) +{ + if (speed == SPEED_1000) + ksz_set_gbit(dev, port, true); + else + ksz_set_gbit(dev, port, false); + + if (speed == SPEED_100 || speed == SPEED_10) + ksz_set_100_10mbit(dev, port, speed); +} + static void ksz_phylink_mac_link_up(struct dsa_switch *ds, int port, unsigned int mode, phy_interface_t interface, diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index 22f03148be0b..d87dc88d9f20 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -51,6 +51,7 @@ struct ksz_chip_data { const u16 *regs; const u32 *masks; const u8 *shifts; + const u8 *xmii_ctrl0; const u8 *xmii_ctrl1; int stp_ctrl_reg; int broadcast_ctrl_reg; @@ -170,6 +171,7 @@ enum ksz_regs { S_START_CTRL, S_BROADCAST_CTRL, S_MULTICAST_CTRL, + P_XMII_CTRL_0, P_XMII_CTRL_1, }; @@ -210,6 +212,11 @@ enum ksz_shifts { ALU_STAT_INDEX, }; +enum ksz_xmii_ctrl0 { + P_MII_100MBIT, + P_MII_10MBIT, +}; + enum ksz_xmii_ctrl1 { P_GMII_1GBIT, P_GMII_NOT_1GBIT, @@ -302,6 +309,7 @@ void ksz_r_mib_stats64(struct ksz_device *dev, int port); void ksz_port_stp_state_set(struct dsa_switch *ds, int port, u8 state); bool ksz_get_gbit(struct ksz_device *dev, int port); void ksz_set_gbit(struct ksz_device *dev, int port, bool gbit); +void ksz_port_set_xmii_speed(struct ksz_device *dev, int port, int speed); extern const struct ksz_chip_data ksz_switch_chips[]; /* Common register access functions */ @@ -466,6 +474,8 @@ static inline int is_lan937x(struct ksz_device *dev) #define SW_START 0x01 /* xMII configuration */ +#define P_MII_100MBIT_M BIT(4) + #define P_GMII_1GBIT_M BIT(6) /* Regmap tables generation */ diff --git a/drivers/net/dsa/microchip/lan937x_main.c b/drivers/net/dsa/microchip/lan937x_main.c index efca96b02e15..c48bae285758 100644 --- a/drivers/net/dsa/microchip/lan937x_main.c +++ b/drivers/net/dsa/microchip/lan937x_main.c @@ -346,21 +346,14 @@ static void lan937x_config_interface(struct ksz_device *dev, int port, int speed, int duplex, bool tx_pause, bool rx_pause) { - u8 xmii_ctrl0, xmii_ctrl1; + u8 xmii_ctrl0; - ksz_pread8(dev, port, REG_PORT_XMII_CTRL_0, &xmii_ctrl0); - ksz_pread8(dev, port, REG_PORT_XMII_CTRL_1, &xmii_ctrl1); - - xmii_ctrl0 &= ~(PORT_MII_100MBIT | PORT_MII_FULL_DUPLEX | - PORT_MII_TX_FLOW_CTRL | PORT_MII_RX_FLOW_CTRL); + ksz_port_set_xmii_speed(dev, port, speed); - if (speed == SPEED_1000) - ksz_set_gbit(dev, port, true); - else - ksz_set_gbit(dev, port, false); + ksz_pread8(dev, port, REG_PORT_XMII_CTRL_0, &xmii_ctrl0); - if (speed == SPEED_100) - xmii_ctrl0 |= PORT_MII_100MBIT; + xmii_ctrl0 &= ~(PORT_MII_FULL_DUPLEX | PORT_MII_TX_FLOW_CTRL | + PORT_MII_RX_FLOW_CTRL); if (duplex) xmii_ctrl0 |= PORT_MII_FULL_DUPLEX; @@ -372,7 +365,6 @@ static void lan937x_config_interface(struct ksz_device *dev, int port, xmii_ctrl0 |= PORT_MII_RX_FLOW_CTRL; ksz_pwrite8(dev, port, REG_PORT_XMII_CTRL_0, xmii_ctrl0); - ksz_pwrite8(dev, port, REG_PORT_XMII_CTRL_1, xmii_ctrl1); } void lan937x_phylink_get_caps(struct ksz_device *dev, int port, diff --git a/drivers/net/dsa/microchip/lan937x_reg.h b/drivers/net/dsa/microchip/lan937x_reg.h index 747295d34411..b9364f6a4f8f 100644 --- a/drivers/net/dsa/microchip/lan937x_reg.h +++ b/drivers/net/dsa/microchip/lan937x_reg.h @@ -135,7 +135,6 @@ #define PORT_SGMII_SEL BIT(7) #define PORT_MII_FULL_DUPLEX BIT(6) #define PORT_MII_TX_FLOW_CTRL BIT(5) -#define PORT_MII_100MBIT BIT(4) #define PORT_MII_RX_FLOW_CTRL BIT(3) #define PORT_GRXC_ENABLE BIT(0)