| /* |
| * AMD 10Gb Ethernet driver |
| * |
| * This file is available to you under your choice of the following two |
| * licenses: |
| * |
| * License 1: GPLv2 |
| * |
| * Copyright (c) 2016 Advanced Micro Devices, Inc. |
| * |
| * This file is free software; you may copy, redistribute and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, either version 2 of the License, or (at |
| * your option) any later version. |
| * |
| * This file is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * This file incorporates work covered by the following copyright and |
| * permission notice: |
| * The Synopsys DWC ETHER XGMAC Software Driver and documentation |
| * (hereinafter "Software") is an unsupported proprietary work of Synopsys, |
| * Inc. unless otherwise expressly agreed to in writing between Synopsys |
| * and you. |
| * |
| * The Software IS NOT an item of Licensed Software or Licensed Product |
| * under any End User Software License Agreement or Agreement for Licensed |
| * Product with Synopsys or any supplement thereto. Permission is hereby |
| * granted, free of charge, to any person obtaining a copy of this software |
| * annotated with this license and the Software, to deal in the Software |
| * without restriction, including without limitation the rights to use, |
| * copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is furnished |
| * to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" |
| * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * |
| * License 2: Modified BSD |
| * |
| * Copyright (c) 2016 Advanced Micro Devices, Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * * Neither the name of Advanced Micro Devices, Inc. nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY |
| * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * This file incorporates work covered by the following copyright and |
| * permission notice: |
| * The Synopsys DWC ETHER XGMAC Software Driver and documentation |
| * (hereinafter "Software") is an unsupported proprietary work of Synopsys, |
| * Inc. unless otherwise expressly agreed to in writing between Synopsys |
| * and you. |
| * |
| * The Software IS NOT an item of Licensed Software or Licensed Product |
| * under any End User Software License Agreement or Agreement for Licensed |
| * Product with Synopsys or any supplement thereto. Permission is hereby |
| * granted, free of charge, to any person obtaining a copy of this software |
| * annotated with this license and the Software, to deal in the Software |
| * without restriction, including without limitation the rights to use, |
| * copy, modify, merge, publish, distribute, sublicense, and/or sell copies |
| * of the Software, and to permit persons to whom the Software is furnished |
| * to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS" |
| * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
| * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kmod.h> |
| #include <linux/device.h> |
| #include <linux/property.h> |
| #include <linux/mdio.h> |
| #include <linux/phy.h> |
| |
| #include "xgbe.h" |
| #include "xgbe-common.h" |
| |
| #define XGBE_BLWC_PROPERTY "amd,serdes-blwc" |
| #define XGBE_CDR_RATE_PROPERTY "amd,serdes-cdr-rate" |
| #define XGBE_PQ_SKEW_PROPERTY "amd,serdes-pq-skew" |
| #define XGBE_TX_AMP_PROPERTY "amd,serdes-tx-amp" |
| #define XGBE_DFE_CFG_PROPERTY "amd,serdes-dfe-tap-config" |
| #define XGBE_DFE_ENA_PROPERTY "amd,serdes-dfe-tap-enable" |
| |
| /* Default SerDes settings */ |
| #define XGBE_SPEED_1000_BLWC 1 |
| #define XGBE_SPEED_1000_CDR 0x2 |
| #define XGBE_SPEED_1000_PLL 0x0 |
| #define XGBE_SPEED_1000_PQ 0xa |
| #define XGBE_SPEED_1000_RATE 0x3 |
| #define XGBE_SPEED_1000_TXAMP 0xf |
| #define XGBE_SPEED_1000_WORD 0x1 |
| #define XGBE_SPEED_1000_DFE_TAP_CONFIG 0x3 |
| #define XGBE_SPEED_1000_DFE_TAP_ENABLE 0x0 |
| |
| #define XGBE_SPEED_2500_BLWC 1 |
| #define XGBE_SPEED_2500_CDR 0x2 |
| #define XGBE_SPEED_2500_PLL 0x0 |
| #define XGBE_SPEED_2500_PQ 0xa |
| #define XGBE_SPEED_2500_RATE 0x1 |
| #define XGBE_SPEED_2500_TXAMP 0xf |
| #define XGBE_SPEED_2500_WORD 0x1 |
| #define XGBE_SPEED_2500_DFE_TAP_CONFIG 0x3 |
| #define XGBE_SPEED_2500_DFE_TAP_ENABLE 0x0 |
| |
| #define XGBE_SPEED_10000_BLWC 0 |
| #define XGBE_SPEED_10000_CDR 0x7 |
| #define XGBE_SPEED_10000_PLL 0x1 |
| #define XGBE_SPEED_10000_PQ 0x12 |
| #define XGBE_SPEED_10000_RATE 0x0 |
| #define XGBE_SPEED_10000_TXAMP 0xa |
| #define XGBE_SPEED_10000_WORD 0x7 |
| #define XGBE_SPEED_10000_DFE_TAP_CONFIG 0x1 |
| #define XGBE_SPEED_10000_DFE_TAP_ENABLE 0x7f |
| |
| /* Rate-change complete wait/retry count */ |
| #define XGBE_RATECHANGE_COUNT 500 |
| |
| static const u32 xgbe_phy_blwc[] = { |
| XGBE_SPEED_1000_BLWC, |
| XGBE_SPEED_2500_BLWC, |
| XGBE_SPEED_10000_BLWC, |
| }; |
| |
| static const u32 xgbe_phy_cdr_rate[] = { |
| XGBE_SPEED_1000_CDR, |
| XGBE_SPEED_2500_CDR, |
| XGBE_SPEED_10000_CDR, |
| }; |
| |
| static const u32 xgbe_phy_pq_skew[] = { |
| XGBE_SPEED_1000_PQ, |
| XGBE_SPEED_2500_PQ, |
| XGBE_SPEED_10000_PQ, |
| }; |
| |
| static const u32 xgbe_phy_tx_amp[] = { |
| XGBE_SPEED_1000_TXAMP, |
| XGBE_SPEED_2500_TXAMP, |
| XGBE_SPEED_10000_TXAMP, |
| }; |
| |
| static const u32 xgbe_phy_dfe_tap_cfg[] = { |
| XGBE_SPEED_1000_DFE_TAP_CONFIG, |
| XGBE_SPEED_2500_DFE_TAP_CONFIG, |
| XGBE_SPEED_10000_DFE_TAP_CONFIG, |
| }; |
| |
| static const u32 xgbe_phy_dfe_tap_ena[] = { |
| XGBE_SPEED_1000_DFE_TAP_ENABLE, |
| XGBE_SPEED_2500_DFE_TAP_ENABLE, |
| XGBE_SPEED_10000_DFE_TAP_ENABLE, |
| }; |
| |
| struct xgbe_phy_data { |
| /* 1000/10000 vs 2500/10000 indicator */ |
| unsigned int speed_set; |
| |
| /* SerDes UEFI configurable settings. |
| * Switching between modes/speeds requires new values for some |
| * SerDes settings. The values can be supplied as device |
| * properties in array format. The first array entry is for |
| * 1GbE, second for 2.5GbE and third for 10GbE |
| */ |
| u32 blwc[XGBE_SPEEDS]; |
| u32 cdr_rate[XGBE_SPEEDS]; |
| u32 pq_skew[XGBE_SPEEDS]; |
| u32 tx_amp[XGBE_SPEEDS]; |
| u32 dfe_tap_cfg[XGBE_SPEEDS]; |
| u32 dfe_tap_ena[XGBE_SPEEDS]; |
| }; |
| |
| static void xgbe_phy_kr_training_pre(struct xgbe_prv_data *pdata) |
| { |
| XSIR0_IOWRITE_BITS(pdata, SIR0_KR_RT_1, RESET, 1); |
| } |
| |
| static void xgbe_phy_kr_training_post(struct xgbe_prv_data *pdata) |
| { |
| XSIR0_IOWRITE_BITS(pdata, SIR0_KR_RT_1, RESET, 0); |
| } |
| |
| static enum xgbe_mode xgbe_phy_an_outcome(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| enum xgbe_mode mode; |
| unsigned int ad_reg, lp_reg; |
| |
| pdata->phy.lp_advertising |= ADVERTISED_Autoneg; |
| pdata->phy.lp_advertising |= ADVERTISED_Backplane; |
| |
| /* Compare Advertisement and Link Partner register 1 */ |
| ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE); |
| lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA); |
| if (lp_reg & 0x400) |
| pdata->phy.lp_advertising |= ADVERTISED_Pause; |
| if (lp_reg & 0x800) |
| pdata->phy.lp_advertising |= ADVERTISED_Asym_Pause; |
| |
| if (pdata->phy.pause_autoneg) { |
| /* Set flow control based on auto-negotiation result */ |
| pdata->phy.tx_pause = 0; |
| pdata->phy.rx_pause = 0; |
| |
| if (ad_reg & lp_reg & 0x400) { |
| pdata->phy.tx_pause = 1; |
| pdata->phy.rx_pause = 1; |
| } else if (ad_reg & lp_reg & 0x800) { |
| if (ad_reg & 0x400) |
| pdata->phy.rx_pause = 1; |
| else if (lp_reg & 0x400) |
| pdata->phy.tx_pause = 1; |
| } |
| } |
| |
| /* Compare Advertisement and Link Partner register 2 */ |
| ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1); |
| lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 1); |
| if (lp_reg & 0x80) |
| pdata->phy.lp_advertising |= ADVERTISED_10000baseKR_Full; |
| if (lp_reg & 0x20) { |
| if (phy_data->speed_set == XGBE_SPEEDSET_2500_10000) |
| pdata->phy.lp_advertising |= ADVERTISED_2500baseX_Full; |
| else |
| pdata->phy.lp_advertising |= ADVERTISED_1000baseKX_Full; |
| } |
| |
| ad_reg &= lp_reg; |
| if (ad_reg & 0x80) { |
| mode = XGBE_MODE_KR; |
| } else if (ad_reg & 0x20) { |
| if (phy_data->speed_set == XGBE_SPEEDSET_2500_10000) |
| mode = XGBE_MODE_KX_2500; |
| else |
| mode = XGBE_MODE_KX_1000; |
| } else { |
| mode = XGBE_MODE_UNKNOWN; |
| } |
| |
| /* Compare Advertisement and Link Partner register 3 */ |
| ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2); |
| lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 2); |
| if (lp_reg & 0xc000) |
| pdata->phy.lp_advertising |= ADVERTISED_10000baseR_FEC; |
| |
| return mode; |
| } |
| |
| static unsigned int xgbe_phy_an_advertising(struct xgbe_prv_data *pdata) |
| { |
| return pdata->phy.advertising; |
| } |
| |
| static int xgbe_phy_an_config(struct xgbe_prv_data *pdata) |
| { |
| /* Nothing uniquely required for an configuration */ |
| return 0; |
| } |
| |
| static enum xgbe_an_mode xgbe_phy_an_mode(struct xgbe_prv_data *pdata) |
| { |
| return XGBE_AN_MODE_CL73; |
| } |
| |
| static void xgbe_phy_pcs_power_cycle(struct xgbe_prv_data *pdata) |
| { |
| unsigned int reg; |
| |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| |
| reg |= MDIO_CTRL1_LPOWER; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| |
| usleep_range(75, 100); |
| |
| reg &= ~MDIO_CTRL1_LPOWER; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| } |
| |
| static void xgbe_phy_start_ratechange(struct xgbe_prv_data *pdata) |
| { |
| /* Assert Rx and Tx ratechange */ |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, RATECHANGE, 1); |
| } |
| |
| static void xgbe_phy_complete_ratechange(struct xgbe_prv_data *pdata) |
| { |
| unsigned int wait; |
| u16 status; |
| |
| /* Release Rx and Tx ratechange */ |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, RATECHANGE, 0); |
| |
| /* Wait for Rx and Tx ready */ |
| wait = XGBE_RATECHANGE_COUNT; |
| while (wait--) { |
| usleep_range(50, 75); |
| |
| status = XSIR0_IOREAD(pdata, SIR0_STATUS); |
| if (XSIR_GET_BITS(status, SIR0_STATUS, RX_READY) && |
| XSIR_GET_BITS(status, SIR0_STATUS, TX_READY)) |
| goto rx_reset; |
| } |
| |
| netif_dbg(pdata, link, pdata->netdev, "SerDes rx/tx not ready (%#hx)\n", |
| status); |
| |
| rx_reset: |
| /* Perform Rx reset for the DFE changes */ |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG6, RESETB_RXD, 0); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG6, RESETB_RXD, 1); |
| } |
| |
| static void xgbe_phy_kr_mode(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| unsigned int reg; |
| |
| /* Set PCS to KR/10G speed */ |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2); |
| reg &= ~MDIO_PCS_CTRL2_TYPE; |
| reg |= MDIO_PCS_CTRL2_10GBR; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg); |
| |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| reg &= ~MDIO_CTRL1_SPEEDSEL; |
| reg |= MDIO_CTRL1_SPEED10G; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| |
| xgbe_phy_pcs_power_cycle(pdata); |
| |
| /* Set SerDes to 10G speed */ |
| xgbe_phy_start_ratechange(pdata); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_10000_RATE); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_10000_WORD); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_10000_PLL); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE, |
| phy_data->cdr_rate[XGBE_SPEED_10000]); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP, |
| phy_data->tx_amp[XGBE_SPEED_10000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA, |
| phy_data->blwc[XGBE_SPEED_10000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG, |
| phy_data->pq_skew[XGBE_SPEED_10000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG, |
| phy_data->dfe_tap_cfg[XGBE_SPEED_10000]); |
| XRXTX_IOWRITE(pdata, RXTX_REG22, |
| phy_data->dfe_tap_ena[XGBE_SPEED_10000]); |
| |
| xgbe_phy_complete_ratechange(pdata); |
| |
| netif_dbg(pdata, link, pdata->netdev, "10GbE KR mode set\n"); |
| } |
| |
| static void xgbe_phy_kx_2500_mode(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| unsigned int reg; |
| |
| /* Set PCS to KX/1G speed */ |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2); |
| reg &= ~MDIO_PCS_CTRL2_TYPE; |
| reg |= MDIO_PCS_CTRL2_10GBX; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg); |
| |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| reg &= ~MDIO_CTRL1_SPEEDSEL; |
| reg |= MDIO_CTRL1_SPEED1G; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| |
| xgbe_phy_pcs_power_cycle(pdata); |
| |
| /* Set SerDes to 2.5G speed */ |
| xgbe_phy_start_ratechange(pdata); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_2500_RATE); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_2500_WORD); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_2500_PLL); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE, |
| phy_data->cdr_rate[XGBE_SPEED_2500]); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP, |
| phy_data->tx_amp[XGBE_SPEED_2500]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA, |
| phy_data->blwc[XGBE_SPEED_2500]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG, |
| phy_data->pq_skew[XGBE_SPEED_2500]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG, |
| phy_data->dfe_tap_cfg[XGBE_SPEED_2500]); |
| XRXTX_IOWRITE(pdata, RXTX_REG22, |
| phy_data->dfe_tap_ena[XGBE_SPEED_2500]); |
| |
| xgbe_phy_complete_ratechange(pdata); |
| |
| netif_dbg(pdata, link, pdata->netdev, "2.5GbE KX mode set\n"); |
| } |
| |
| static void xgbe_phy_kx_1000_mode(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| unsigned int reg; |
| |
| /* Set PCS to KX/1G speed */ |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2); |
| reg &= ~MDIO_PCS_CTRL2_TYPE; |
| reg |= MDIO_PCS_CTRL2_10GBX; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg); |
| |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| reg &= ~MDIO_CTRL1_SPEEDSEL; |
| reg |= MDIO_CTRL1_SPEED1G; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| |
| xgbe_phy_pcs_power_cycle(pdata); |
| |
| /* Set SerDes to 1G speed */ |
| xgbe_phy_start_ratechange(pdata); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_1000_RATE); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_1000_WORD); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_1000_PLL); |
| |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE, |
| phy_data->cdr_rate[XGBE_SPEED_1000]); |
| XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP, |
| phy_data->tx_amp[XGBE_SPEED_1000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA, |
| phy_data->blwc[XGBE_SPEED_1000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG, |
| phy_data->pq_skew[XGBE_SPEED_1000]); |
| XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG, |
| phy_data->dfe_tap_cfg[XGBE_SPEED_1000]); |
| XRXTX_IOWRITE(pdata, RXTX_REG22, |
| phy_data->dfe_tap_ena[XGBE_SPEED_1000]); |
| |
| xgbe_phy_complete_ratechange(pdata); |
| |
| netif_dbg(pdata, link, pdata->netdev, "1GbE KX mode set\n"); |
| } |
| |
| static enum xgbe_mode xgbe_phy_cur_mode(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| enum xgbe_mode mode; |
| unsigned int reg; |
| |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2); |
| reg &= MDIO_PCS_CTRL2_TYPE; |
| |
| if (reg == MDIO_PCS_CTRL2_10GBR) { |
| mode = XGBE_MODE_KR; |
| } else { |
| if (phy_data->speed_set == XGBE_SPEEDSET_2500_10000) |
| mode = XGBE_MODE_KX_2500; |
| else |
| mode = XGBE_MODE_KX_1000; |
| } |
| |
| return mode; |
| } |
| |
| static enum xgbe_mode xgbe_phy_switch_mode(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| enum xgbe_mode mode; |
| |
| /* If we are in KR switch to KX, and vice-versa */ |
| if (xgbe_phy_cur_mode(pdata) == XGBE_MODE_KR) { |
| if (phy_data->speed_set == XGBE_SPEEDSET_2500_10000) |
| mode = XGBE_MODE_KX_2500; |
| else |
| mode = XGBE_MODE_KX_1000; |
| } else { |
| mode = XGBE_MODE_KR; |
| } |
| |
| return mode; |
| } |
| |
| static enum xgbe_mode xgbe_phy_get_mode(struct xgbe_prv_data *pdata, |
| int speed) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| |
| switch (speed) { |
| case SPEED_1000: |
| return (phy_data->speed_set == XGBE_SPEEDSET_1000_10000) |
| ? XGBE_MODE_KX_1000 : XGBE_MODE_UNKNOWN; |
| case SPEED_2500: |
| return (phy_data->speed_set == XGBE_SPEEDSET_2500_10000) |
| ? XGBE_MODE_KX_2500 : XGBE_MODE_UNKNOWN; |
| case SPEED_10000: |
| return XGBE_MODE_KR; |
| default: |
| return XGBE_MODE_UNKNOWN; |
| } |
| } |
| |
| static void xgbe_phy_set_mode(struct xgbe_prv_data *pdata, enum xgbe_mode mode) |
| { |
| switch (mode) { |
| case XGBE_MODE_KX_1000: |
| xgbe_phy_kx_1000_mode(pdata); |
| break; |
| case XGBE_MODE_KX_2500: |
| xgbe_phy_kx_2500_mode(pdata); |
| break; |
| case XGBE_MODE_KR: |
| xgbe_phy_kr_mode(pdata); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static bool xgbe_phy_check_mode(struct xgbe_prv_data *pdata, |
| enum xgbe_mode mode, u32 advert) |
| { |
| if (pdata->phy.autoneg == AUTONEG_ENABLE) { |
| if (pdata->phy.advertising & advert) |
| return true; |
| } else { |
| enum xgbe_mode cur_mode; |
| |
| cur_mode = xgbe_phy_get_mode(pdata, pdata->phy.speed); |
| if (cur_mode == mode) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| static bool xgbe_phy_use_mode(struct xgbe_prv_data *pdata, enum xgbe_mode mode) |
| { |
| switch (mode) { |
| case XGBE_MODE_KX_1000: |
| return xgbe_phy_check_mode(pdata, mode, |
| ADVERTISED_1000baseKX_Full); |
| case XGBE_MODE_KX_2500: |
| return xgbe_phy_check_mode(pdata, mode, |
| ADVERTISED_2500baseX_Full); |
| case XGBE_MODE_KR: |
| return xgbe_phy_check_mode(pdata, mode, |
| ADVERTISED_10000baseKR_Full); |
| default: |
| return false; |
| } |
| } |
| |
| static bool xgbe_phy_valid_speed(struct xgbe_prv_data *pdata, int speed) |
| { |
| struct xgbe_phy_data *phy_data = pdata->phy_data; |
| |
| switch (speed) { |
| case SPEED_1000: |
| if (phy_data->speed_set != XGBE_SPEEDSET_1000_10000) |
| return false; |
| return true; |
| case SPEED_2500: |
| if (phy_data->speed_set != XGBE_SPEEDSET_2500_10000) |
| return false; |
| return true; |
| case SPEED_10000: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| static int xgbe_phy_link_status(struct xgbe_prv_data *pdata, int *an_restart) |
| { |
| unsigned int reg; |
| |
| *an_restart = 0; |
| |
| /* Link status is latched low, so read once to clear |
| * and then read again to get current state |
| */ |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1); |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1); |
| |
| return (reg & MDIO_STAT1_LSTATUS) ? 1 : 0; |
| } |
| |
| static void xgbe_phy_stop(struct xgbe_prv_data *pdata) |
| { |
| /* Nothing uniquely required for stop */ |
| } |
| |
| static int xgbe_phy_start(struct xgbe_prv_data *pdata) |
| { |
| /* Nothing uniquely required for start */ |
| return 0; |
| } |
| |
| static int xgbe_phy_reset(struct xgbe_prv_data *pdata) |
| { |
| unsigned int reg, count; |
| |
| /* Perform a software reset of the PCS */ |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| reg |= MDIO_CTRL1_RESET; |
| XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg); |
| |
| count = 50; |
| do { |
| msleep(20); |
| reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1); |
| } while ((reg & MDIO_CTRL1_RESET) && --count); |
| |
| if (reg & MDIO_CTRL1_RESET) |
| return -ETIMEDOUT; |
| |
| return 0; |
| } |
| |
| static void xgbe_phy_exit(struct xgbe_prv_data *pdata) |
| { |
| /* Nothing uniquely required for exit */ |
| } |
| |
| static int xgbe_phy_init(struct xgbe_prv_data *pdata) |
| { |
| struct xgbe_phy_data *phy_data; |
| int ret; |
| |
| phy_data = devm_kzalloc(pdata->dev, sizeof(*phy_data), GFP_KERNEL); |
| if (!phy_data) |
| return -ENOMEM; |
| |
| /* Retrieve the PHY speedset */ |
| ret = device_property_read_u32(pdata->phy_dev, XGBE_SPEEDSET_PROPERTY, |
| &phy_data->speed_set); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_SPEEDSET_PROPERTY); |
| return ret; |
| } |
| |
| switch (phy_data->speed_set) { |
| case XGBE_SPEEDSET_1000_10000: |
| case XGBE_SPEEDSET_2500_10000: |
| break; |
| default: |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_SPEEDSET_PROPERTY); |
| return -EINVAL; |
| } |
| |
| /* Retrieve the PHY configuration properties */ |
| if (device_property_present(pdata->phy_dev, XGBE_BLWC_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_BLWC_PROPERTY, |
| phy_data->blwc, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_BLWC_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->blwc, xgbe_phy_blwc, |
| sizeof(phy_data->blwc)); |
| } |
| |
| if (device_property_present(pdata->phy_dev, XGBE_CDR_RATE_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_CDR_RATE_PROPERTY, |
| phy_data->cdr_rate, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_CDR_RATE_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->cdr_rate, xgbe_phy_cdr_rate, |
| sizeof(phy_data->cdr_rate)); |
| } |
| |
| if (device_property_present(pdata->phy_dev, XGBE_PQ_SKEW_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_PQ_SKEW_PROPERTY, |
| phy_data->pq_skew, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_PQ_SKEW_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->pq_skew, xgbe_phy_pq_skew, |
| sizeof(phy_data->pq_skew)); |
| } |
| |
| if (device_property_present(pdata->phy_dev, XGBE_TX_AMP_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_TX_AMP_PROPERTY, |
| phy_data->tx_amp, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_TX_AMP_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->tx_amp, xgbe_phy_tx_amp, |
| sizeof(phy_data->tx_amp)); |
| } |
| |
| if (device_property_present(pdata->phy_dev, XGBE_DFE_CFG_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_DFE_CFG_PROPERTY, |
| phy_data->dfe_tap_cfg, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_DFE_CFG_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->dfe_tap_cfg, xgbe_phy_dfe_tap_cfg, |
| sizeof(phy_data->dfe_tap_cfg)); |
| } |
| |
| if (device_property_present(pdata->phy_dev, XGBE_DFE_ENA_PROPERTY)) { |
| ret = device_property_read_u32_array(pdata->phy_dev, |
| XGBE_DFE_ENA_PROPERTY, |
| phy_data->dfe_tap_ena, |
| XGBE_SPEEDS); |
| if (ret) { |
| dev_err(pdata->dev, "invalid %s property\n", |
| XGBE_DFE_ENA_PROPERTY); |
| return ret; |
| } |
| } else { |
| memcpy(phy_data->dfe_tap_ena, xgbe_phy_dfe_tap_ena, |
| sizeof(phy_data->dfe_tap_ena)); |
| } |
| |
| /* Initialize supported features */ |
| pdata->phy.supported = SUPPORTED_Autoneg; |
| pdata->phy.supported |= SUPPORTED_Pause | SUPPORTED_Asym_Pause; |
| pdata->phy.supported |= SUPPORTED_Backplane; |
| pdata->phy.supported |= SUPPORTED_10000baseKR_Full; |
| switch (phy_data->speed_set) { |
| case XGBE_SPEEDSET_1000_10000: |
| pdata->phy.supported |= SUPPORTED_1000baseKX_Full; |
| break; |
| case XGBE_SPEEDSET_2500_10000: |
| pdata->phy.supported |= SUPPORTED_2500baseX_Full; |
| break; |
| } |
| |
| if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE) |
| pdata->phy.supported |= SUPPORTED_10000baseR_FEC; |
| |
| pdata->phy_data = phy_data; |
| |
| return 0; |
| } |
| |
| void xgbe_init_function_ptrs_phy_v1(struct xgbe_phy_if *phy_if) |
| { |
| struct xgbe_phy_impl_if *phy_impl = &phy_if->phy_impl; |
| |
| phy_impl->init = xgbe_phy_init; |
| phy_impl->exit = xgbe_phy_exit; |
| |
| phy_impl->reset = xgbe_phy_reset; |
| phy_impl->start = xgbe_phy_start; |
| phy_impl->stop = xgbe_phy_stop; |
| |
| phy_impl->link_status = xgbe_phy_link_status; |
| |
| phy_impl->valid_speed = xgbe_phy_valid_speed; |
| |
| phy_impl->use_mode = xgbe_phy_use_mode; |
| phy_impl->set_mode = xgbe_phy_set_mode; |
| phy_impl->get_mode = xgbe_phy_get_mode; |
| phy_impl->switch_mode = xgbe_phy_switch_mode; |
| phy_impl->cur_mode = xgbe_phy_cur_mode; |
| |
| phy_impl->an_mode = xgbe_phy_an_mode; |
| |
| phy_impl->an_config = xgbe_phy_an_config; |
| |
| phy_impl->an_advertising = xgbe_phy_an_advertising; |
| |
| phy_impl->an_outcome = xgbe_phy_an_outcome; |
| |
| phy_impl->kr_training_pre = xgbe_phy_kr_training_pre; |
| phy_impl->kr_training_post = xgbe_phy_kr_training_post; |
| } |
