mirror of https://gitee.com/openkylin/linux.git
1365 lines
38 KiB
C
1365 lines
38 KiB
C
/*
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* AMD 10Gb Ethernet driver
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*
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* This file is available to you under your choice of the following two
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* licenses:
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*
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* License 1: GPLv2
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*
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* Copyright (c) 2014 Advanced Micro Devices, Inc.
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*
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* This file is free software; you may copy, redistribute and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or (at
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* your option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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* The Synopsys DWC ETHER XGMAC Software Driver and documentation
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* (hereinafter "Software") is an unsupported proprietary work of Synopsys,
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* Inc. unless otherwise expressly agreed to in writing between Synopsys
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* and you.
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*
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* The Software IS NOT an item of Licensed Software or Licensed Product
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* under any End User Software License Agreement or Agreement for Licensed
|
|
* Product with Synopsys or any supplement thereto. Permission is hereby
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* granted, free of charge, to any person obtaining a copy of this software
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* annotated with this license and the Software, to deal in the Software
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|
* without restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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|
* of the Software, and to permit persons to whom the Software is furnished
|
|
* to do so, subject to the following conditions:
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|
*
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* The above copyright notice and this permission notice shall be included
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|
* in all copies or substantial portions of the Software.
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*
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* THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
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* BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* License 2: Modified BSD
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*
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* Copyright (c) 2014 Advanced Micro Devices, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Advanced Micro Devices, Inc. nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
|
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* 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:
|
|
*
|
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* 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
|
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
* PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
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* 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
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/module.h>
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#include <linux/kmod.h>
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#include <linux/mdio.h>
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#include <linux/phy.h>
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#include <linux/of.h>
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#include <linux/bitops.h>
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#include <linux/jiffies.h>
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#include "xgbe.h"
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#include "xgbe-common.h"
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static void xgbe_an_enable_kr_training(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
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reg |= XGBE_KR_TRAINING_ENABLE;
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XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg);
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}
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static void xgbe_an_disable_kr_training(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
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reg &= ~XGBE_KR_TRAINING_ENABLE;
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XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL, reg);
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}
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static void xgbe_pcs_power_cycle(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
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reg |= MDIO_CTRL1_LPOWER;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg);
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usleep_range(75, 100);
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reg &= ~MDIO_CTRL1_LPOWER;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg);
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}
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static void xgbe_serdes_start_ratechange(struct xgbe_prv_data *pdata)
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{
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/* Assert Rx and Tx ratechange */
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, RATECHANGE, 1);
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}
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static void xgbe_serdes_complete_ratechange(struct xgbe_prv_data *pdata)
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{
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unsigned int wait;
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u16 status;
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/* Release Rx and Tx ratechange */
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, RATECHANGE, 0);
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/* Wait for Rx and Tx ready */
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wait = XGBE_RATECHANGE_COUNT;
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while (wait--) {
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usleep_range(50, 75);
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status = XSIR0_IOREAD(pdata, SIR0_STATUS);
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if (XSIR_GET_BITS(status, SIR0_STATUS, RX_READY) &&
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XSIR_GET_BITS(status, SIR0_STATUS, TX_READY))
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goto rx_reset;
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}
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netif_dbg(pdata, link, pdata->netdev, "SerDes rx/tx not ready (%#hx)\n",
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status);
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rx_reset:
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/* Perform Rx reset for the DFE changes */
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG6, RESETB_RXD, 0);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG6, RESETB_RXD, 1);
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}
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static void xgbe_xgmii_mode(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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/* Enable KR training */
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xgbe_an_enable_kr_training(pdata);
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/* Set MAC to 10G speed */
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pdata->hw_if.set_xgmii_speed(pdata);
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/* Set PCS to KR/10G speed */
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2);
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reg &= ~MDIO_PCS_CTRL2_TYPE;
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reg |= MDIO_PCS_CTRL2_10GBR;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg);
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
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reg &= ~MDIO_CTRL1_SPEEDSEL;
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reg |= MDIO_CTRL1_SPEED10G;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg);
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xgbe_pcs_power_cycle(pdata);
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/* Set SerDes to 10G speed */
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xgbe_serdes_start_ratechange(pdata);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_10000_RATE);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_10000_WORD);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_10000_PLL);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE,
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pdata->serdes_cdr_rate[XGBE_SPEED_10000]);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP,
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pdata->serdes_tx_amp[XGBE_SPEED_10000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA,
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pdata->serdes_blwc[XGBE_SPEED_10000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG,
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pdata->serdes_pq_skew[XGBE_SPEED_10000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG,
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pdata->serdes_dfe_tap_cfg[XGBE_SPEED_10000]);
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XRXTX_IOWRITE(pdata, RXTX_REG22,
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pdata->serdes_dfe_tap_ena[XGBE_SPEED_10000]);
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xgbe_serdes_complete_ratechange(pdata);
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netif_dbg(pdata, link, pdata->netdev, "10GbE KR mode set\n");
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}
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static void xgbe_gmii_2500_mode(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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/* Disable KR training */
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xgbe_an_disable_kr_training(pdata);
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/* Set MAC to 2.5G speed */
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pdata->hw_if.set_gmii_2500_speed(pdata);
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/* Set PCS to KX/1G speed */
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2);
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reg &= ~MDIO_PCS_CTRL2_TYPE;
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reg |= MDIO_PCS_CTRL2_10GBX;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg);
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
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reg &= ~MDIO_CTRL1_SPEEDSEL;
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reg |= MDIO_CTRL1_SPEED1G;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg);
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xgbe_pcs_power_cycle(pdata);
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/* Set SerDes to 2.5G speed */
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xgbe_serdes_start_ratechange(pdata);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_2500_RATE);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_2500_WORD);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_2500_PLL);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE,
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pdata->serdes_cdr_rate[XGBE_SPEED_2500]);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP,
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pdata->serdes_tx_amp[XGBE_SPEED_2500]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA,
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pdata->serdes_blwc[XGBE_SPEED_2500]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG,
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pdata->serdes_pq_skew[XGBE_SPEED_2500]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG,
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pdata->serdes_dfe_tap_cfg[XGBE_SPEED_2500]);
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XRXTX_IOWRITE(pdata, RXTX_REG22,
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pdata->serdes_dfe_tap_ena[XGBE_SPEED_2500]);
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xgbe_serdes_complete_ratechange(pdata);
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netif_dbg(pdata, link, pdata->netdev, "2.5GbE KX mode set\n");
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}
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static void xgbe_gmii_mode(struct xgbe_prv_data *pdata)
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{
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unsigned int reg;
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/* Disable KR training */
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xgbe_an_disable_kr_training(pdata);
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/* Set MAC to 1G speed */
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pdata->hw_if.set_gmii_speed(pdata);
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/* Set PCS to KX/1G speed */
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2);
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reg &= ~MDIO_PCS_CTRL2_TYPE;
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reg |= MDIO_PCS_CTRL2_10GBX;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL2, reg);
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1);
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reg &= ~MDIO_CTRL1_SPEEDSEL;
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reg |= MDIO_CTRL1_SPEED1G;
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XMDIO_WRITE(pdata, MDIO_MMD_PCS, MDIO_CTRL1, reg);
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xgbe_pcs_power_cycle(pdata);
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/* Set SerDes to 1G speed */
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xgbe_serdes_start_ratechange(pdata);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, DATARATE, XGBE_SPEED_1000_RATE);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, WORDMODE, XGBE_SPEED_1000_WORD);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, PLLSEL, XGBE_SPEED_1000_PLL);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, CDR_RATE,
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pdata->serdes_cdr_rate[XGBE_SPEED_1000]);
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XSIR1_IOWRITE_BITS(pdata, SIR1_SPEED, TXAMP,
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pdata->serdes_tx_amp[XGBE_SPEED_1000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG20, BLWC_ENA,
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pdata->serdes_blwc[XGBE_SPEED_1000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG114, PQ_REG,
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pdata->serdes_pq_skew[XGBE_SPEED_1000]);
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XRXTX_IOWRITE_BITS(pdata, RXTX_REG129, RXDFE_CONFIG,
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pdata->serdes_dfe_tap_cfg[XGBE_SPEED_1000]);
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XRXTX_IOWRITE(pdata, RXTX_REG22,
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pdata->serdes_dfe_tap_ena[XGBE_SPEED_1000]);
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xgbe_serdes_complete_ratechange(pdata);
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|
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netif_dbg(pdata, link, pdata->netdev, "1GbE KX mode set\n");
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}
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|
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static void xgbe_cur_mode(struct xgbe_prv_data *pdata,
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enum xgbe_mode *mode)
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{
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unsigned int reg;
|
|
|
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reg = XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL2);
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if ((reg & MDIO_PCS_CTRL2_TYPE) == MDIO_PCS_CTRL2_10GBR)
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*mode = XGBE_MODE_KR;
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else
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*mode = XGBE_MODE_KX;
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}
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|
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static bool xgbe_in_kr_mode(struct xgbe_prv_data *pdata)
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{
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enum xgbe_mode mode;
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|
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xgbe_cur_mode(pdata, &mode);
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|
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return (mode == XGBE_MODE_KR);
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}
|
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|
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static void xgbe_switch_mode(struct xgbe_prv_data *pdata)
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{
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/* If we are in KR switch to KX, and vice-versa */
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if (xgbe_in_kr_mode(pdata)) {
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if (pdata->speed_set == XGBE_SPEEDSET_1000_10000)
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xgbe_gmii_mode(pdata);
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else
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xgbe_gmii_2500_mode(pdata);
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} else {
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xgbe_xgmii_mode(pdata);
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}
|
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}
|
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|
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static void xgbe_set_mode(struct xgbe_prv_data *pdata,
|
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enum xgbe_mode mode)
|
|
{
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|
enum xgbe_mode cur_mode;
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|
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xgbe_cur_mode(pdata, &cur_mode);
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if (mode != cur_mode)
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xgbe_switch_mode(pdata);
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}
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|
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static bool xgbe_use_xgmii_mode(struct xgbe_prv_data *pdata)
|
|
{
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if (pdata->phy.autoneg == AUTONEG_ENABLE) {
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if (pdata->phy.advertising & ADVERTISED_10000baseKR_Full)
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return true;
|
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} else {
|
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if (pdata->phy.speed == SPEED_10000)
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return true;
|
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}
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|
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return false;
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|
}
|
|
|
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static bool xgbe_use_gmii_2500_mode(struct xgbe_prv_data *pdata)
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|
{
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if (pdata->phy.autoneg == AUTONEG_ENABLE) {
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if (pdata->phy.advertising & ADVERTISED_2500baseX_Full)
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|
return true;
|
|
} else {
|
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if (pdata->phy.speed == SPEED_2500)
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return true;
|
|
}
|
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|
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return false;
|
|
}
|
|
|
|
static bool xgbe_use_gmii_mode(struct xgbe_prv_data *pdata)
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|
{
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|
if (pdata->phy.autoneg == AUTONEG_ENABLE) {
|
|
if (pdata->phy.advertising & ADVERTISED_1000baseKX_Full)
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|
return true;
|
|
} else {
|
|
if (pdata->phy.speed == SPEED_1000)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
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|
|
static void xgbe_set_an(struct xgbe_prv_data *pdata, bool enable, bool restart)
|
|
{
|
|
unsigned int reg;
|
|
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_CTRL1);
|
|
reg &= ~MDIO_AN_CTRL1_ENABLE;
|
|
|
|
if (enable)
|
|
reg |= MDIO_AN_CTRL1_ENABLE;
|
|
|
|
if (restart)
|
|
reg |= MDIO_AN_CTRL1_RESTART;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_CTRL1, reg);
|
|
}
|
|
|
|
static void xgbe_restart_an(struct xgbe_prv_data *pdata)
|
|
{
|
|
xgbe_set_an(pdata, true, true);
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "AN enabled/restarted\n");
|
|
}
|
|
|
|
static void xgbe_disable_an(struct xgbe_prv_data *pdata)
|
|
{
|
|
xgbe_set_an(pdata, false, false);
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "AN disabled\n");
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_tx_training(struct xgbe_prv_data *pdata,
|
|
enum xgbe_rx *state)
|
|
{
|
|
unsigned int ad_reg, lp_reg, reg;
|
|
|
|
*state = XGBE_RX_COMPLETE;
|
|
|
|
/* If we're not in KR mode then we're done */
|
|
if (!xgbe_in_kr_mode(pdata))
|
|
return XGBE_AN_PAGE_RECEIVED;
|
|
|
|
/* Enable/Disable FEC */
|
|
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
|
|
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 2);
|
|
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FECCTRL);
|
|
reg &= ~(MDIO_PMA_10GBR_FECABLE_ABLE | MDIO_PMA_10GBR_FECABLE_ERRABLE);
|
|
if ((ad_reg & 0xc000) && (lp_reg & 0xc000))
|
|
reg |= pdata->fec_ability;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_FECCTRL, reg);
|
|
|
|
/* Start KR training */
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL);
|
|
if (reg & XGBE_KR_TRAINING_ENABLE) {
|
|
XSIR0_IOWRITE_BITS(pdata, SIR0_KR_RT_1, RESET, 1);
|
|
|
|
reg |= XGBE_KR_TRAINING_START;
|
|
XMDIO_WRITE(pdata, MDIO_MMD_PMAPMD, MDIO_PMA_10GBR_PMD_CTRL,
|
|
reg);
|
|
|
|
XSIR0_IOWRITE_BITS(pdata, SIR0_KR_RT_1, RESET, 0);
|
|
|
|
netif_dbg(pdata, link, pdata->netdev,
|
|
"KR training initiated\n");
|
|
}
|
|
|
|
return XGBE_AN_PAGE_RECEIVED;
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_tx_xnp(struct xgbe_prv_data *pdata,
|
|
enum xgbe_rx *state)
|
|
{
|
|
u16 msg;
|
|
|
|
*state = XGBE_RX_XNP;
|
|
|
|
msg = XGBE_XNP_MCF_NULL_MESSAGE;
|
|
msg |= XGBE_XNP_MP_FORMATTED;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP + 2, 0);
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP + 1, 0);
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_XNP, msg);
|
|
|
|
return XGBE_AN_PAGE_RECEIVED;
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_rx_bpa(struct xgbe_prv_data *pdata,
|
|
enum xgbe_rx *state)
|
|
{
|
|
unsigned int link_support;
|
|
unsigned int reg, ad_reg, lp_reg;
|
|
|
|
/* Read Base Ability register 2 first */
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA + 1);
|
|
|
|
/* Check for a supported mode, otherwise restart in a different one */
|
|
link_support = xgbe_in_kr_mode(pdata) ? 0x80 : 0x20;
|
|
if (!(reg & link_support))
|
|
return XGBE_AN_INCOMPAT_LINK;
|
|
|
|
/* Check Extended Next Page support */
|
|
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
|
|
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPA);
|
|
|
|
return ((ad_reg & XGBE_XNP_NP_EXCHANGE) ||
|
|
(lp_reg & XGBE_XNP_NP_EXCHANGE))
|
|
? xgbe_an_tx_xnp(pdata, state)
|
|
: xgbe_an_tx_training(pdata, state);
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_rx_xnp(struct xgbe_prv_data *pdata,
|
|
enum xgbe_rx *state)
|
|
{
|
|
unsigned int ad_reg, lp_reg;
|
|
|
|
/* Check Extended Next Page support */
|
|
ad_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_XNP);
|
|
lp_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_LPX);
|
|
|
|
return ((ad_reg & XGBE_XNP_NP_EXCHANGE) ||
|
|
(lp_reg & XGBE_XNP_NP_EXCHANGE))
|
|
? xgbe_an_tx_xnp(pdata, state)
|
|
: xgbe_an_tx_training(pdata, state);
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_page_received(struct xgbe_prv_data *pdata)
|
|
{
|
|
enum xgbe_rx *state;
|
|
unsigned long an_timeout;
|
|
enum xgbe_an ret;
|
|
|
|
if (!pdata->an_start) {
|
|
pdata->an_start = jiffies;
|
|
} else {
|
|
an_timeout = pdata->an_start +
|
|
msecs_to_jiffies(XGBE_AN_MS_TIMEOUT);
|
|
if (time_after(jiffies, an_timeout)) {
|
|
/* Auto-negotiation timed out, reset state */
|
|
pdata->kr_state = XGBE_RX_BPA;
|
|
pdata->kx_state = XGBE_RX_BPA;
|
|
|
|
pdata->an_start = jiffies;
|
|
|
|
netif_dbg(pdata, link, pdata->netdev,
|
|
"AN timed out, resetting state\n");
|
|
}
|
|
}
|
|
|
|
state = xgbe_in_kr_mode(pdata) ? &pdata->kr_state
|
|
: &pdata->kx_state;
|
|
|
|
switch (*state) {
|
|
case XGBE_RX_BPA:
|
|
ret = xgbe_an_rx_bpa(pdata, state);
|
|
break;
|
|
|
|
case XGBE_RX_XNP:
|
|
ret = xgbe_an_rx_xnp(pdata, state);
|
|
break;
|
|
|
|
default:
|
|
ret = XGBE_AN_ERROR;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum xgbe_an xgbe_an_incompat_link(struct xgbe_prv_data *pdata)
|
|
{
|
|
/* Be sure we aren't looping trying to negotiate */
|
|
if (xgbe_in_kr_mode(pdata)) {
|
|
pdata->kr_state = XGBE_RX_ERROR;
|
|
|
|
if (!(pdata->phy.advertising & ADVERTISED_1000baseKX_Full) &&
|
|
!(pdata->phy.advertising & ADVERTISED_2500baseX_Full))
|
|
return XGBE_AN_NO_LINK;
|
|
|
|
if (pdata->kx_state != XGBE_RX_BPA)
|
|
return XGBE_AN_NO_LINK;
|
|
} else {
|
|
pdata->kx_state = XGBE_RX_ERROR;
|
|
|
|
if (!(pdata->phy.advertising & ADVERTISED_10000baseKR_Full))
|
|
return XGBE_AN_NO_LINK;
|
|
|
|
if (pdata->kr_state != XGBE_RX_BPA)
|
|
return XGBE_AN_NO_LINK;
|
|
}
|
|
|
|
xgbe_disable_an(pdata);
|
|
|
|
xgbe_switch_mode(pdata);
|
|
|
|
xgbe_restart_an(pdata);
|
|
|
|
return XGBE_AN_INCOMPAT_LINK;
|
|
}
|
|
|
|
static irqreturn_t xgbe_an_isr(int irq, void *data)
|
|
{
|
|
struct xgbe_prv_data *pdata = (struct xgbe_prv_data *)data;
|
|
|
|
netif_dbg(pdata, intr, pdata->netdev, "AN interrupt received\n");
|
|
|
|
/* Interrupt reason must be read and cleared outside of IRQ context */
|
|
disable_irq_nosync(pdata->an_irq);
|
|
|
|
queue_work(pdata->an_workqueue, &pdata->an_irq_work);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void xgbe_an_irq_work(struct work_struct *work)
|
|
{
|
|
struct xgbe_prv_data *pdata = container_of(work,
|
|
struct xgbe_prv_data,
|
|
an_irq_work);
|
|
|
|
/* Avoid a race between enabling the IRQ and exiting the work by
|
|
* waiting for the work to finish and then queueing it
|
|
*/
|
|
flush_work(&pdata->an_work);
|
|
queue_work(pdata->an_workqueue, &pdata->an_work);
|
|
}
|
|
|
|
static const char *xgbe_state_as_string(enum xgbe_an state)
|
|
{
|
|
switch (state) {
|
|
case XGBE_AN_READY:
|
|
return "Ready";
|
|
case XGBE_AN_PAGE_RECEIVED:
|
|
return "Page-Received";
|
|
case XGBE_AN_INCOMPAT_LINK:
|
|
return "Incompatible-Link";
|
|
case XGBE_AN_COMPLETE:
|
|
return "Complete";
|
|
case XGBE_AN_NO_LINK:
|
|
return "No-Link";
|
|
case XGBE_AN_ERROR:
|
|
return "Error";
|
|
default:
|
|
return "Undefined";
|
|
}
|
|
}
|
|
|
|
static void xgbe_an_state_machine(struct work_struct *work)
|
|
{
|
|
struct xgbe_prv_data *pdata = container_of(work,
|
|
struct xgbe_prv_data,
|
|
an_work);
|
|
enum xgbe_an cur_state = pdata->an_state;
|
|
unsigned int int_reg, int_mask;
|
|
|
|
mutex_lock(&pdata->an_mutex);
|
|
|
|
/* Read the interrupt */
|
|
int_reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_INT);
|
|
if (!int_reg)
|
|
goto out;
|
|
|
|
next_int:
|
|
if (int_reg & XGBE_AN_PG_RCV) {
|
|
pdata->an_state = XGBE_AN_PAGE_RECEIVED;
|
|
int_mask = XGBE_AN_PG_RCV;
|
|
} else if (int_reg & XGBE_AN_INC_LINK) {
|
|
pdata->an_state = XGBE_AN_INCOMPAT_LINK;
|
|
int_mask = XGBE_AN_INC_LINK;
|
|
} else if (int_reg & XGBE_AN_INT_CMPLT) {
|
|
pdata->an_state = XGBE_AN_COMPLETE;
|
|
int_mask = XGBE_AN_INT_CMPLT;
|
|
} else {
|
|
pdata->an_state = XGBE_AN_ERROR;
|
|
int_mask = 0;
|
|
}
|
|
|
|
/* Clear the interrupt to be processed */
|
|
int_reg &= ~int_mask;
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, int_reg);
|
|
|
|
pdata->an_result = pdata->an_state;
|
|
|
|
again:
|
|
netif_dbg(pdata, link, pdata->netdev, "AN %s\n",
|
|
xgbe_state_as_string(pdata->an_state));
|
|
|
|
cur_state = pdata->an_state;
|
|
|
|
switch (pdata->an_state) {
|
|
case XGBE_AN_READY:
|
|
pdata->an_supported = 0;
|
|
break;
|
|
|
|
case XGBE_AN_PAGE_RECEIVED:
|
|
pdata->an_state = xgbe_an_page_received(pdata);
|
|
pdata->an_supported++;
|
|
break;
|
|
|
|
case XGBE_AN_INCOMPAT_LINK:
|
|
pdata->an_supported = 0;
|
|
pdata->parallel_detect = 0;
|
|
pdata->an_state = xgbe_an_incompat_link(pdata);
|
|
break;
|
|
|
|
case XGBE_AN_COMPLETE:
|
|
pdata->parallel_detect = pdata->an_supported ? 0 : 1;
|
|
netif_dbg(pdata, link, pdata->netdev, "%s successful\n",
|
|
pdata->an_supported ? "Auto negotiation"
|
|
: "Parallel detection");
|
|
break;
|
|
|
|
case XGBE_AN_NO_LINK:
|
|
break;
|
|
|
|
default:
|
|
pdata->an_state = XGBE_AN_ERROR;
|
|
}
|
|
|
|
if (pdata->an_state == XGBE_AN_NO_LINK) {
|
|
int_reg = 0;
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, 0);
|
|
} else if (pdata->an_state == XGBE_AN_ERROR) {
|
|
netdev_err(pdata->netdev,
|
|
"error during auto-negotiation, state=%u\n",
|
|
cur_state);
|
|
|
|
int_reg = 0;
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, 0);
|
|
}
|
|
|
|
if (pdata->an_state >= XGBE_AN_COMPLETE) {
|
|
pdata->an_result = pdata->an_state;
|
|
pdata->an_state = XGBE_AN_READY;
|
|
pdata->kr_state = XGBE_RX_BPA;
|
|
pdata->kx_state = XGBE_RX_BPA;
|
|
pdata->an_start = 0;
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "AN result: %s\n",
|
|
xgbe_state_as_string(pdata->an_result));
|
|
}
|
|
|
|
if (cur_state != pdata->an_state)
|
|
goto again;
|
|
|
|
if (int_reg)
|
|
goto next_int;
|
|
|
|
out:
|
|
enable_irq(pdata->an_irq);
|
|
|
|
mutex_unlock(&pdata->an_mutex);
|
|
}
|
|
|
|
static void xgbe_an_init(struct xgbe_prv_data *pdata)
|
|
{
|
|
unsigned int reg;
|
|
|
|
/* Set up Advertisement register 3 first */
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2);
|
|
if (pdata->phy.advertising & ADVERTISED_10000baseR_FEC)
|
|
reg |= 0xc000;
|
|
else
|
|
reg &= ~0xc000;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2, reg);
|
|
|
|
/* Set up Advertisement register 2 next */
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1);
|
|
if (pdata->phy.advertising & ADVERTISED_10000baseKR_Full)
|
|
reg |= 0x80;
|
|
else
|
|
reg &= ~0x80;
|
|
|
|
if ((pdata->phy.advertising & ADVERTISED_1000baseKX_Full) ||
|
|
(pdata->phy.advertising & ADVERTISED_2500baseX_Full))
|
|
reg |= 0x20;
|
|
else
|
|
reg &= ~0x20;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1, reg);
|
|
|
|
/* Set up Advertisement register 1 last */
|
|
reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE);
|
|
if (pdata->phy.advertising & ADVERTISED_Pause)
|
|
reg |= 0x400;
|
|
else
|
|
reg &= ~0x400;
|
|
|
|
if (pdata->phy.advertising & ADVERTISED_Asym_Pause)
|
|
reg |= 0x800;
|
|
else
|
|
reg &= ~0x800;
|
|
|
|
/* We don't intend to perform XNP */
|
|
reg &= ~XGBE_XNP_NP_EXCHANGE;
|
|
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg);
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "AN initialized\n");
|
|
}
|
|
|
|
static const char *xgbe_phy_fc_string(struct xgbe_prv_data *pdata)
|
|
{
|
|
if (pdata->tx_pause && pdata->rx_pause)
|
|
return "rx/tx";
|
|
else if (pdata->rx_pause)
|
|
return "rx";
|
|
else if (pdata->tx_pause)
|
|
return "tx";
|
|
else
|
|
return "off";
|
|
}
|
|
|
|
static const char *xgbe_phy_speed_string(int speed)
|
|
{
|
|
switch (speed) {
|
|
case SPEED_1000:
|
|
return "1Gbps";
|
|
case SPEED_2500:
|
|
return "2.5Gbps";
|
|
case SPEED_10000:
|
|
return "10Gbps";
|
|
case SPEED_UNKNOWN:
|
|
return "Unknown";
|
|
default:
|
|
return "Unsupported";
|
|
}
|
|
}
|
|
|
|
static void xgbe_phy_print_status(struct xgbe_prv_data *pdata)
|
|
{
|
|
if (pdata->phy.link)
|
|
netdev_info(pdata->netdev,
|
|
"Link is Up - %s/%s - flow control %s\n",
|
|
xgbe_phy_speed_string(pdata->phy.speed),
|
|
pdata->phy.duplex == DUPLEX_FULL ? "Full" : "Half",
|
|
xgbe_phy_fc_string(pdata));
|
|
else
|
|
netdev_info(pdata->netdev, "Link is Down\n");
|
|
}
|
|
|
|
static void xgbe_phy_adjust_link(struct xgbe_prv_data *pdata)
|
|
{
|
|
int new_state = 0;
|
|
|
|
if (pdata->phy.link) {
|
|
/* Flow control support */
|
|
pdata->pause_autoneg = pdata->phy.pause_autoneg;
|
|
|
|
if (pdata->tx_pause != pdata->phy.tx_pause) {
|
|
new_state = 1;
|
|
pdata->hw_if.config_tx_flow_control(pdata);
|
|
pdata->tx_pause = pdata->phy.tx_pause;
|
|
}
|
|
|
|
if (pdata->rx_pause != pdata->phy.rx_pause) {
|
|
new_state = 1;
|
|
pdata->hw_if.config_rx_flow_control(pdata);
|
|
pdata->rx_pause = pdata->phy.rx_pause;
|
|
}
|
|
|
|
/* Speed support */
|
|
if (pdata->phy_speed != pdata->phy.speed) {
|
|
new_state = 1;
|
|
pdata->phy_speed = pdata->phy.speed;
|
|
}
|
|
|
|
if (pdata->phy_link != pdata->phy.link) {
|
|
new_state = 1;
|
|
pdata->phy_link = pdata->phy.link;
|
|
}
|
|
} else if (pdata->phy_link) {
|
|
new_state = 1;
|
|
pdata->phy_link = 0;
|
|
pdata->phy_speed = SPEED_UNKNOWN;
|
|
}
|
|
|
|
if (new_state && netif_msg_link(pdata))
|
|
xgbe_phy_print_status(pdata);
|
|
}
|
|
|
|
static int xgbe_phy_config_fixed(struct xgbe_prv_data *pdata)
|
|
{
|
|
netif_dbg(pdata, link, pdata->netdev, "fixed PHY configuration\n");
|
|
|
|
/* Disable auto-negotiation */
|
|
xgbe_disable_an(pdata);
|
|
|
|
/* Validate/Set specified speed */
|
|
switch (pdata->phy.speed) {
|
|
case SPEED_10000:
|
|
xgbe_set_mode(pdata, XGBE_MODE_KR);
|
|
break;
|
|
|
|
case SPEED_2500:
|
|
case SPEED_1000:
|
|
xgbe_set_mode(pdata, XGBE_MODE_KX);
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Validate duplex mode */
|
|
if (pdata->phy.duplex != DUPLEX_FULL)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __xgbe_phy_config_aneg(struct xgbe_prv_data *pdata)
|
|
{
|
|
set_bit(XGBE_LINK_INIT, &pdata->dev_state);
|
|
pdata->link_check = jiffies;
|
|
|
|
if (pdata->phy.autoneg != AUTONEG_ENABLE)
|
|
return xgbe_phy_config_fixed(pdata);
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "AN PHY configuration\n");
|
|
|
|
/* Disable auto-negotiation interrupt */
|
|
disable_irq(pdata->an_irq);
|
|
|
|
/* Start auto-negotiation in a supported mode */
|
|
if (pdata->phy.advertising & ADVERTISED_10000baseKR_Full) {
|
|
xgbe_set_mode(pdata, XGBE_MODE_KR);
|
|
} else if ((pdata->phy.advertising & ADVERTISED_1000baseKX_Full) ||
|
|
(pdata->phy.advertising & ADVERTISED_2500baseX_Full)) {
|
|
xgbe_set_mode(pdata, XGBE_MODE_KX);
|
|
} else {
|
|
enable_irq(pdata->an_irq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Disable and stop any in progress auto-negotiation */
|
|
xgbe_disable_an(pdata);
|
|
|
|
/* Clear any auto-negotitation interrupts */
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, 0);
|
|
|
|
pdata->an_result = XGBE_AN_READY;
|
|
pdata->an_state = XGBE_AN_READY;
|
|
pdata->kr_state = XGBE_RX_BPA;
|
|
pdata->kx_state = XGBE_RX_BPA;
|
|
|
|
/* Re-enable auto-negotiation interrupt */
|
|
enable_irq(pdata->an_irq);
|
|
|
|
/* Set up advertisement registers based on current settings */
|
|
xgbe_an_init(pdata);
|
|
|
|
/* Enable and start auto-negotiation */
|
|
xgbe_restart_an(pdata);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int xgbe_phy_config_aneg(struct xgbe_prv_data *pdata)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&pdata->an_mutex);
|
|
|
|
ret = __xgbe_phy_config_aneg(pdata);
|
|
if (ret)
|
|
set_bit(XGBE_LINK_ERR, &pdata->dev_state);
|
|
else
|
|
clear_bit(XGBE_LINK_ERR, &pdata->dev_state);
|
|
|
|
mutex_unlock(&pdata->an_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static bool xgbe_phy_aneg_done(struct xgbe_prv_data *pdata)
|
|
{
|
|
return (pdata->an_result == XGBE_AN_COMPLETE);
|
|
}
|
|
|
|
static void xgbe_check_link_timeout(struct xgbe_prv_data *pdata)
|
|
{
|
|
unsigned long link_timeout;
|
|
|
|
link_timeout = pdata->link_check + (XGBE_LINK_TIMEOUT * HZ);
|
|
if (time_after(jiffies, link_timeout)) {
|
|
netif_dbg(pdata, link, pdata->netdev, "AN link timeout\n");
|
|
xgbe_phy_config_aneg(pdata);
|
|
}
|
|
}
|
|
|
|
static void xgbe_phy_status_force(struct xgbe_prv_data *pdata)
|
|
{
|
|
if (xgbe_in_kr_mode(pdata)) {
|
|
pdata->phy.speed = SPEED_10000;
|
|
} else {
|
|
switch (pdata->speed_set) {
|
|
case XGBE_SPEEDSET_1000_10000:
|
|
pdata->phy.speed = SPEED_1000;
|
|
break;
|
|
|
|
case XGBE_SPEEDSET_2500_10000:
|
|
pdata->phy.speed = SPEED_2500;
|
|
break;
|
|
}
|
|
}
|
|
pdata->phy.duplex = DUPLEX_FULL;
|
|
}
|
|
|
|
static void xgbe_phy_status_aneg(struct xgbe_prv_data *pdata)
|
|
{
|
|
unsigned int ad_reg, lp_reg;
|
|
|
|
pdata->phy.lp_advertising = 0;
|
|
|
|
if ((pdata->phy.autoneg != AUTONEG_ENABLE) || pdata->parallel_detect)
|
|
return xgbe_phy_status_force(pdata);
|
|
|
|
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) {
|
|
switch (pdata->speed_set) {
|
|
case XGBE_SPEEDSET_1000_10000:
|
|
pdata->phy.lp_advertising |= ADVERTISED_1000baseKX_Full;
|
|
break;
|
|
case XGBE_SPEEDSET_2500_10000:
|
|
pdata->phy.lp_advertising |= ADVERTISED_2500baseX_Full;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ad_reg &= lp_reg;
|
|
if (ad_reg & 0x80) {
|
|
pdata->phy.speed = SPEED_10000;
|
|
xgbe_set_mode(pdata, XGBE_MODE_KR);
|
|
} else if (ad_reg & 0x20) {
|
|
switch (pdata->speed_set) {
|
|
case XGBE_SPEEDSET_1000_10000:
|
|
pdata->phy.speed = SPEED_1000;
|
|
break;
|
|
|
|
case XGBE_SPEEDSET_2500_10000:
|
|
pdata->phy.speed = SPEED_2500;
|
|
break;
|
|
}
|
|
|
|
xgbe_set_mode(pdata, XGBE_MODE_KX);
|
|
} else {
|
|
pdata->phy.speed = SPEED_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;
|
|
|
|
pdata->phy.duplex = DUPLEX_FULL;
|
|
}
|
|
|
|
static void xgbe_phy_status(struct xgbe_prv_data *pdata)
|
|
{
|
|
unsigned int reg, link_aneg;
|
|
|
|
if (test_bit(XGBE_LINK_ERR, &pdata->dev_state)) {
|
|
if (test_and_clear_bit(XGBE_LINK, &pdata->dev_state))
|
|
netif_carrier_off(pdata->netdev);
|
|
|
|
pdata->phy.link = 0;
|
|
goto adjust_link;
|
|
}
|
|
|
|
link_aneg = (pdata->phy.autoneg == AUTONEG_ENABLE);
|
|
|
|
/* Get the link status. 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);
|
|
pdata->phy.link = (reg & MDIO_STAT1_LSTATUS) ? 1 : 0;
|
|
|
|
if (pdata->phy.link) {
|
|
if (link_aneg && !xgbe_phy_aneg_done(pdata)) {
|
|
xgbe_check_link_timeout(pdata);
|
|
return;
|
|
}
|
|
|
|
xgbe_phy_status_aneg(pdata);
|
|
|
|
if (test_bit(XGBE_LINK_INIT, &pdata->dev_state))
|
|
clear_bit(XGBE_LINK_INIT, &pdata->dev_state);
|
|
|
|
if (!test_bit(XGBE_LINK, &pdata->dev_state)) {
|
|
set_bit(XGBE_LINK, &pdata->dev_state);
|
|
netif_carrier_on(pdata->netdev);
|
|
}
|
|
} else {
|
|
if (test_bit(XGBE_LINK_INIT, &pdata->dev_state)) {
|
|
xgbe_check_link_timeout(pdata);
|
|
|
|
if (link_aneg)
|
|
return;
|
|
}
|
|
|
|
xgbe_phy_status_aneg(pdata);
|
|
|
|
if (test_bit(XGBE_LINK, &pdata->dev_state)) {
|
|
clear_bit(XGBE_LINK, &pdata->dev_state);
|
|
netif_carrier_off(pdata->netdev);
|
|
}
|
|
}
|
|
|
|
adjust_link:
|
|
xgbe_phy_adjust_link(pdata);
|
|
}
|
|
|
|
static void xgbe_phy_stop(struct xgbe_prv_data *pdata)
|
|
{
|
|
netif_dbg(pdata, link, pdata->netdev, "stopping PHY\n");
|
|
|
|
/* Disable auto-negotiation */
|
|
xgbe_disable_an(pdata);
|
|
|
|
/* Disable auto-negotiation interrupts */
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INTMASK, 0);
|
|
|
|
devm_free_irq(pdata->dev, pdata->an_irq, pdata);
|
|
|
|
pdata->phy.link = 0;
|
|
if (test_and_clear_bit(XGBE_LINK, &pdata->dev_state))
|
|
netif_carrier_off(pdata->netdev);
|
|
|
|
xgbe_phy_adjust_link(pdata);
|
|
}
|
|
|
|
static int xgbe_phy_start(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct net_device *netdev = pdata->netdev;
|
|
int ret;
|
|
|
|
netif_dbg(pdata, link, pdata->netdev, "starting PHY\n");
|
|
|
|
ret = devm_request_irq(pdata->dev, pdata->an_irq,
|
|
xgbe_an_isr, 0, pdata->an_name,
|
|
pdata);
|
|
if (ret) {
|
|
netdev_err(netdev, "phy irq request failed\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Set initial mode - call the mode setting routines
|
|
* directly to insure we are properly configured
|
|
*/
|
|
if (xgbe_use_xgmii_mode(pdata)) {
|
|
xgbe_xgmii_mode(pdata);
|
|
} else if (xgbe_use_gmii_mode(pdata)) {
|
|
xgbe_gmii_mode(pdata);
|
|
} else if (xgbe_use_gmii_2500_mode(pdata)) {
|
|
xgbe_gmii_2500_mode(pdata);
|
|
} else {
|
|
ret = -EINVAL;
|
|
goto err_irq;
|
|
}
|
|
|
|
/* Set up advertisement registers based on current settings */
|
|
xgbe_an_init(pdata);
|
|
|
|
/* Enable auto-negotiation interrupts */
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INTMASK, 0x07);
|
|
|
|
return xgbe_phy_config_aneg(pdata);
|
|
|
|
err_irq:
|
|
devm_free_irq(pdata->dev, pdata->an_irq, pdata);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int xgbe_phy_reset(struct xgbe_prv_data *pdata)
|
|
{
|
|
unsigned int count, reg;
|
|
|
|
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;
|
|
|
|
/* Disable auto-negotiation for now */
|
|
xgbe_disable_an(pdata);
|
|
|
|
/* Clear auto-negotiation interrupts */
|
|
XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_AN_INT, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void xgbe_dump_phy_registers(struct xgbe_prv_data *pdata)
|
|
{
|
|
struct device *dev = pdata->dev;
|
|
|
|
dev_dbg(dev, "\n************* PHY Reg dump **********************\n");
|
|
|
|
dev_dbg(dev, "PCS Control Reg (%#04x) = %#04x\n", MDIO_CTRL1,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_CTRL1));
|
|
dev_dbg(dev, "PCS Status Reg (%#04x) = %#04x\n", MDIO_STAT1,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_STAT1));
|
|
dev_dbg(dev, "Phy Id (PHYS ID 1 %#04x)= %#04x\n", MDIO_DEVID1,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVID1));
|
|
dev_dbg(dev, "Phy Id (PHYS ID 2 %#04x)= %#04x\n", MDIO_DEVID2,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVID2));
|
|
dev_dbg(dev, "Devices in Package (%#04x)= %#04x\n", MDIO_DEVS1,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVS1));
|
|
dev_dbg(dev, "Devices in Package (%#04x)= %#04x\n", MDIO_DEVS2,
|
|
XMDIO_READ(pdata, MDIO_MMD_PCS, MDIO_DEVS2));
|
|
|
|
dev_dbg(dev, "Auto-Neg Control Reg (%#04x) = %#04x\n", MDIO_CTRL1,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_CTRL1));
|
|
dev_dbg(dev, "Auto-Neg Status Reg (%#04x) = %#04x\n", MDIO_STAT1,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_STAT1));
|
|
dev_dbg(dev, "Auto-Neg Ad Reg 1 (%#04x) = %#04x\n",
|
|
MDIO_AN_ADVERTISE,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE));
|
|
dev_dbg(dev, "Auto-Neg Ad Reg 2 (%#04x) = %#04x\n",
|
|
MDIO_AN_ADVERTISE + 1,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 1));
|
|
dev_dbg(dev, "Auto-Neg Ad Reg 3 (%#04x) = %#04x\n",
|
|
MDIO_AN_ADVERTISE + 2,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_ADVERTISE + 2));
|
|
dev_dbg(dev, "Auto-Neg Completion Reg (%#04x) = %#04x\n",
|
|
MDIO_AN_COMP_STAT,
|
|
XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_AN_COMP_STAT));
|
|
|
|
dev_dbg(dev, "\n*************************************************\n");
|
|
}
|
|
|
|
static void xgbe_phy_init(struct xgbe_prv_data *pdata)
|
|
{
|
|
mutex_init(&pdata->an_mutex);
|
|
INIT_WORK(&pdata->an_irq_work, xgbe_an_irq_work);
|
|
INIT_WORK(&pdata->an_work, xgbe_an_state_machine);
|
|
pdata->mdio_mmd = MDIO_MMD_PCS;
|
|
|
|
/* 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 (pdata->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;
|
|
}
|
|
|
|
pdata->fec_ability = XMDIO_READ(pdata, MDIO_MMD_PMAPMD,
|
|
MDIO_PMA_10GBR_FECABLE);
|
|
pdata->fec_ability &= (MDIO_PMA_10GBR_FECABLE_ABLE |
|
|
MDIO_PMA_10GBR_FECABLE_ERRABLE);
|
|
if (pdata->fec_ability & MDIO_PMA_10GBR_FECABLE_ABLE)
|
|
pdata->phy.supported |= SUPPORTED_10000baseR_FEC;
|
|
|
|
pdata->phy.advertising = pdata->phy.supported;
|
|
|
|
pdata->phy.address = 0;
|
|
|
|
pdata->phy.autoneg = AUTONEG_ENABLE;
|
|
pdata->phy.speed = SPEED_UNKNOWN;
|
|
pdata->phy.duplex = DUPLEX_UNKNOWN;
|
|
|
|
pdata->phy.link = 0;
|
|
|
|
pdata->phy.pause_autoneg = pdata->pause_autoneg;
|
|
pdata->phy.tx_pause = pdata->tx_pause;
|
|
pdata->phy.rx_pause = pdata->rx_pause;
|
|
|
|
/* Fix up Flow Control advertising */
|
|
pdata->phy.advertising &= ~ADVERTISED_Pause;
|
|
pdata->phy.advertising &= ~ADVERTISED_Asym_Pause;
|
|
|
|
if (pdata->rx_pause) {
|
|
pdata->phy.advertising |= ADVERTISED_Pause;
|
|
pdata->phy.advertising |= ADVERTISED_Asym_Pause;
|
|
}
|
|
|
|
if (pdata->tx_pause)
|
|
pdata->phy.advertising ^= ADVERTISED_Asym_Pause;
|
|
|
|
if (netif_msg_drv(pdata))
|
|
xgbe_dump_phy_registers(pdata);
|
|
}
|
|
|
|
void xgbe_init_function_ptrs_phy(struct xgbe_phy_if *phy_if)
|
|
{
|
|
phy_if->phy_init = xgbe_phy_init;
|
|
|
|
phy_if->phy_reset = xgbe_phy_reset;
|
|
phy_if->phy_start = xgbe_phy_start;
|
|
phy_if->phy_stop = xgbe_phy_stop;
|
|
|
|
phy_if->phy_status = xgbe_phy_status;
|
|
phy_if->phy_config_aneg = xgbe_phy_config_aneg;
|
|
}
|