3648 lines
99 KiB
C
3648 lines
99 KiB
C
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/*
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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) 2014-2016 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,
|
||
|
* Inc. unless otherwise expressly agreed to in writing between Synopsys
|
||
|
* and you.
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||
|
*
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||
|
* 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.
|
||
|
*
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||
|
* 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
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||
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||
|
* 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) 2014-2016 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.
|
||
|
*
|
||
|
* 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
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||
|
* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/phy.h>
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#include <linux/mdio.h>
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#include <linux/clk.h>
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#include <linux/bitrev.h>
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#include <linux/crc32.h>
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#include <linux/crc32poly.h>
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#include "xgbe.h"
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#include "xgbe-common.h"
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static inline unsigned int xgbe_get_max_frame(struct xgbe_prv_data *pdata)
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{
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return pdata->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
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}
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static unsigned int xgbe_usec_to_riwt(struct xgbe_prv_data *pdata,
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unsigned int usec)
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{
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unsigned long rate;
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unsigned int ret;
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DBGPR("-->xgbe_usec_to_riwt\n");
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rate = pdata->sysclk_rate;
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/*
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* Convert the input usec value to the watchdog timer value. Each
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* watchdog timer value is equivalent to 256 clock cycles.
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* Calculate the required value as:
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* ( usec * ( system_clock_mhz / 10^6 ) / 256
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*/
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ret = (usec * (rate / 1000000)) / 256;
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DBGPR("<--xgbe_usec_to_riwt\n");
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return ret;
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}
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static unsigned int xgbe_riwt_to_usec(struct xgbe_prv_data *pdata,
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unsigned int riwt)
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{
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unsigned long rate;
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unsigned int ret;
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DBGPR("-->xgbe_riwt_to_usec\n");
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rate = pdata->sysclk_rate;
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/*
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* Convert the input watchdog timer value to the usec value. Each
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* watchdog timer value is equivalent to 256 clock cycles.
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* Calculate the required value as:
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* ( riwt * 256 ) / ( system_clock_mhz / 10^6 )
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*/
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ret = (riwt * 256) / (rate / 1000000);
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DBGPR("<--xgbe_riwt_to_usec\n");
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return ret;
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}
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static int xgbe_config_pbl_val(struct xgbe_prv_data *pdata)
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{
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unsigned int pblx8, pbl;
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unsigned int i;
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pblx8 = DMA_PBL_X8_DISABLE;
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pbl = pdata->pbl;
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if (pdata->pbl > 32) {
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pblx8 = DMA_PBL_X8_ENABLE;
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pbl >>= 3;
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}
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for (i = 0; i < pdata->channel_count; i++) {
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XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_CR, PBLX8,
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pblx8);
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if (pdata->channel[i]->tx_ring)
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XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR,
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PBL, pbl);
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if (pdata->channel[i]->rx_ring)
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XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR,
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PBL, pbl);
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}
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return 0;
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}
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static int xgbe_config_osp_mode(struct xgbe_prv_data *pdata)
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{
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unsigned int i;
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for (i = 0; i < pdata->channel_count; i++) {
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if (!pdata->channel[i]->tx_ring)
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break;
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XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, OSP,
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pdata->tx_osp_mode);
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}
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return 0;
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}
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static int xgbe_config_rsf_mode(struct xgbe_prv_data *pdata, unsigned int val)
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{
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unsigned int i;
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for (i = 0; i < pdata->rx_q_count; i++)
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XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RSF, val);
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return 0;
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}
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static int xgbe_config_tsf_mode(struct xgbe_prv_data *pdata, unsigned int val)
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{
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unsigned int i;
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for (i = 0; i < pdata->tx_q_count; i++)
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XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TSF, val);
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return 0;
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}
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|
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static int xgbe_config_rx_threshold(struct xgbe_prv_data *pdata,
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unsigned int val)
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{
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unsigned int i;
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|
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for (i = 0; i < pdata->rx_q_count; i++)
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XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RTC, val);
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|
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return 0;
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}
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|
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static int xgbe_config_tx_threshold(struct xgbe_prv_data *pdata,
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|
unsigned int val)
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|
{
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unsigned int i;
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||
|
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for (i = 0; i < pdata->tx_q_count; i++)
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XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TTC, val);
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|
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return 0;
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|
}
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||
|
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static int xgbe_config_rx_coalesce(struct xgbe_prv_data *pdata)
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|
{
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unsigned int i;
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|
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for (i = 0; i < pdata->channel_count; i++) {
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|
if (!pdata->channel[i]->rx_ring)
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|
break;
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|
|
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XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RIWT, RWT,
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|
pdata->rx_riwt);
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|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_config_tx_coalesce(struct xgbe_prv_data *pdata)
|
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|
{
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_rx_buffer_size(struct xgbe_prv_data *pdata)
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||
|
{
|
||
|
unsigned int i;
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||
|
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR, RBSZ,
|
||
|
pdata->rx_buf_size);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_tso_mode(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->tx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, TSE, 1);
|
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|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_sph_mode(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_CR, SPH, 1);
|
||
|
}
|
||
|
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, HDSMS, XGBE_SPH_HDSMS_SIZE);
|
||
|
}
|
||
|
|
||
|
static int xgbe_write_rss_reg(struct xgbe_prv_data *pdata, unsigned int type,
|
||
|
unsigned int index, unsigned int val)
|
||
|
{
|
||
|
unsigned int wait;
|
||
|
int ret = 0;
|
||
|
|
||
|
mutex_lock(&pdata->rss_mutex);
|
||
|
|
||
|
if (XGMAC_IOREAD_BITS(pdata, MAC_RSSAR, OB)) {
|
||
|
ret = -EBUSY;
|
||
|
goto unlock;
|
||
|
}
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, MAC_RSSDR, val);
|
||
|
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, RSSIA, index);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, ADDRT, type);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, CT, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSAR, OB, 1);
|
||
|
|
||
|
wait = 1000;
|
||
|
while (wait--) {
|
||
|
if (!XGMAC_IOREAD_BITS(pdata, MAC_RSSAR, OB))
|
||
|
goto unlock;
|
||
|
|
||
|
usleep_range(1000, 1500);
|
||
|
}
|
||
|
|
||
|
ret = -EBUSY;
|
||
|
|
||
|
unlock:
|
||
|
mutex_unlock(&pdata->rss_mutex);
|
||
|
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
static int xgbe_write_rss_hash_key(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int key_regs = sizeof(pdata->rss_key) / sizeof(u32);
|
||
|
unsigned int *key = (unsigned int *)&pdata->rss_key;
|
||
|
int ret;
|
||
|
|
||
|
while (key_regs--) {
|
||
|
ret = xgbe_write_rss_reg(pdata, XGBE_RSS_HASH_KEY_TYPE,
|
||
|
key_regs, *key++);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_write_rss_lookup_table(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
int ret;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++) {
|
||
|
ret = xgbe_write_rss_reg(pdata,
|
||
|
XGBE_RSS_LOOKUP_TABLE_TYPE, i,
|
||
|
pdata->rss_table[i]);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_rss_hash_key(struct xgbe_prv_data *pdata, const u8 *key)
|
||
|
{
|
||
|
memcpy(pdata->rss_key, key, sizeof(pdata->rss_key));
|
||
|
|
||
|
return xgbe_write_rss_hash_key(pdata);
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_rss_lookup_table(struct xgbe_prv_data *pdata,
|
||
|
const u32 *table)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < ARRAY_SIZE(pdata->rss_table); i++)
|
||
|
XGMAC_SET_BITS(pdata->rss_table[i], MAC_RSSDR, DMCH, table[i]);
|
||
|
|
||
|
return xgbe_write_rss_lookup_table(pdata);
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_rss(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
int ret;
|
||
|
|
||
|
if (!pdata->hw_feat.rss)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
/* Program the hash key */
|
||
|
ret = xgbe_write_rss_hash_key(pdata);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
/* Program the lookup table */
|
||
|
ret = xgbe_write_rss_lookup_table(pdata);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
/* Set the RSS options */
|
||
|
XGMAC_IOWRITE(pdata, MAC_RSSCR, pdata->rss_options);
|
||
|
|
||
|
/* Enable RSS */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSCR, RSSE, 1);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_rss(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (!pdata->hw_feat.rss)
|
||
|
return -EOPNOTSUPP;
|
||
|
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RSSCR, RSSE, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_rss(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
int ret;
|
||
|
|
||
|
if (!pdata->hw_feat.rss)
|
||
|
return;
|
||
|
|
||
|
if (pdata->netdev->features & NETIF_F_RXHASH)
|
||
|
ret = xgbe_enable_rss(pdata);
|
||
|
else
|
||
|
ret = xgbe_disable_rss(pdata);
|
||
|
|
||
|
if (ret)
|
||
|
netdev_err(pdata->netdev,
|
||
|
"error configuring RSS, RSS disabled\n");
|
||
|
}
|
||
|
|
||
|
static bool xgbe_is_pfc_queue(struct xgbe_prv_data *pdata,
|
||
|
unsigned int queue)
|
||
|
{
|
||
|
unsigned int prio, tc;
|
||
|
|
||
|
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
|
||
|
/* Does this queue handle the priority? */
|
||
|
if (pdata->prio2q_map[prio] != queue)
|
||
|
continue;
|
||
|
|
||
|
/* Get the Traffic Class for this priority */
|
||
|
tc = pdata->ets->prio_tc[prio];
|
||
|
|
||
|
/* Check if PFC is enabled for this traffic class */
|
||
|
if (pdata->pfc->pfc_en & (1 << tc))
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
static void xgbe_set_vxlan_id(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Program the VXLAN port */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TIR, TNID, pdata->vxlan_port);
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "VXLAN tunnel id set to %hx\n",
|
||
|
pdata->vxlan_port);
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_vxlan(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (!pdata->hw_feat.vxn)
|
||
|
return;
|
||
|
|
||
|
/* Program the VXLAN port */
|
||
|
xgbe_set_vxlan_id(pdata);
|
||
|
|
||
|
/* Allow for IPv6/UDP zero-checksum VXLAN packets */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VUCC, 1);
|
||
|
|
||
|
/* Enable VXLAN tunneling mode */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, VNM, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, VNE, 1);
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "VXLAN acceleration enabled\n");
|
||
|
}
|
||
|
|
||
|
static void xgbe_disable_vxlan(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (!pdata->hw_feat.vxn)
|
||
|
return;
|
||
|
|
||
|
/* Disable tunneling mode */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, VNE, 0);
|
||
|
|
||
|
/* Clear IPv6/UDP zero-checksum VXLAN packets setting */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VUCC, 0);
|
||
|
|
||
|
/* Clear the VXLAN port */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TIR, TNID, 0);
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "VXLAN acceleration disabled\n");
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_tx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int max_q_count, q_count;
|
||
|
unsigned int reg, reg_val;
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Clear MTL flow control */
|
||
|
for (i = 0; i < pdata->rx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, EHFC, 0);
|
||
|
|
||
|
/* Clear MAC flow control */
|
||
|
max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES;
|
||
|
q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
|
||
|
reg = MAC_Q0TFCR;
|
||
|
for (i = 0; i < q_count; i++) {
|
||
|
reg_val = XGMAC_IOREAD(pdata, reg);
|
||
|
XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, TFE, 0);
|
||
|
XGMAC_IOWRITE(pdata, reg, reg_val);
|
||
|
|
||
|
reg += MAC_QTFCR_INC;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_tx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct ieee_pfc *pfc = pdata->pfc;
|
||
|
struct ieee_ets *ets = pdata->ets;
|
||
|
unsigned int max_q_count, q_count;
|
||
|
unsigned int reg, reg_val;
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Set MTL flow control */
|
||
|
for (i = 0; i < pdata->rx_q_count; i++) {
|
||
|
unsigned int ehfc = 0;
|
||
|
|
||
|
if (pdata->rx_rfd[i]) {
|
||
|
/* Flow control thresholds are established */
|
||
|
if (pfc && ets) {
|
||
|
if (xgbe_is_pfc_queue(pdata, i))
|
||
|
ehfc = 1;
|
||
|
} else {
|
||
|
ehfc = 1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, EHFC, ehfc);
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"flow control %s for RXq%u\n",
|
||
|
ehfc ? "enabled" : "disabled", i);
|
||
|
}
|
||
|
|
||
|
/* Set MAC flow control */
|
||
|
max_q_count = XGMAC_MAX_FLOW_CONTROL_QUEUES;
|
||
|
q_count = min_t(unsigned int, pdata->tx_q_count, max_q_count);
|
||
|
reg = MAC_Q0TFCR;
|
||
|
for (i = 0; i < q_count; i++) {
|
||
|
reg_val = XGMAC_IOREAD(pdata, reg);
|
||
|
|
||
|
/* Enable transmit flow control */
|
||
|
XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, TFE, 1);
|
||
|
/* Set pause time */
|
||
|
XGMAC_SET_BITS(reg_val, MAC_Q0TFCR, PT, 0xffff);
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, reg, reg_val);
|
||
|
|
||
|
reg += MAC_QTFCR_INC;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_rx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, RFE, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_rx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, RFE, 1);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_config_tx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct ieee_pfc *pfc = pdata->pfc;
|
||
|
|
||
|
if (pdata->tx_pause || (pfc && pfc->pfc_en))
|
||
|
xgbe_enable_tx_flow_control(pdata);
|
||
|
else
|
||
|
xgbe_disable_tx_flow_control(pdata);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_config_rx_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct ieee_pfc *pfc = pdata->pfc;
|
||
|
|
||
|
if (pdata->rx_pause || (pfc && pfc->pfc_en))
|
||
|
xgbe_enable_rx_flow_control(pdata);
|
||
|
else
|
||
|
xgbe_disable_rx_flow_control(pdata);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_flow_control(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct ieee_pfc *pfc = pdata->pfc;
|
||
|
|
||
|
xgbe_config_tx_flow_control(pdata);
|
||
|
xgbe_config_rx_flow_control(pdata);
|
||
|
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RFCR, PFCE,
|
||
|
(pfc && pfc->pfc_en) ? 1 : 0);
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_dma_interrupts(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct xgbe_channel *channel;
|
||
|
unsigned int i, ver;
|
||
|
|
||
|
/* Set the interrupt mode if supported */
|
||
|
if (pdata->channel_irq_mode)
|
||
|
XGMAC_IOWRITE_BITS(pdata, DMA_MR, INTM,
|
||
|
pdata->channel_irq_mode);
|
||
|
|
||
|
ver = XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER);
|
||
|
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
channel = pdata->channel[i];
|
||
|
|
||
|
/* Clear all the interrupts which are set */
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_SR,
|
||
|
XGMAC_DMA_IOREAD(channel, DMA_CH_SR));
|
||
|
|
||
|
/* Clear all interrupt enable bits */
|
||
|
channel->curr_ier = 0;
|
||
|
|
||
|
/* Enable following interrupts
|
||
|
* NIE - Normal Interrupt Summary Enable
|
||
|
* AIE - Abnormal Interrupt Summary Enable
|
||
|
* FBEE - Fatal Bus Error Enable
|
||
|
*/
|
||
|
if (ver < 0x21) {
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, NIE20, 1);
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, AIE20, 1);
|
||
|
} else {
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, NIE, 1);
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, AIE, 1);
|
||
|
}
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, FBEE, 1);
|
||
|
|
||
|
if (channel->tx_ring) {
|
||
|
/* Enable the following Tx interrupts
|
||
|
* TIE - Transmit Interrupt Enable (unless using
|
||
|
* per channel interrupts in edge triggered
|
||
|
* mode)
|
||
|
*/
|
||
|
if (!pdata->per_channel_irq || pdata->channel_irq_mode)
|
||
|
XGMAC_SET_BITS(channel->curr_ier,
|
||
|
DMA_CH_IER, TIE, 1);
|
||
|
}
|
||
|
if (channel->rx_ring) {
|
||
|
/* Enable following Rx interrupts
|
||
|
* RBUE - Receive Buffer Unavailable Enable
|
||
|
* RIE - Receive Interrupt Enable (unless using
|
||
|
* per channel interrupts in edge triggered
|
||
|
* mode)
|
||
|
*/
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RBUE, 1);
|
||
|
if (!pdata->per_channel_irq || pdata->channel_irq_mode)
|
||
|
XGMAC_SET_BITS(channel->curr_ier,
|
||
|
DMA_CH_IER, RIE, 1);
|
||
|
}
|
||
|
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, channel->curr_ier);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_mtl_interrupts(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int mtl_q_isr;
|
||
|
unsigned int q_count, i;
|
||
|
|
||
|
q_count = max(pdata->hw_feat.tx_q_cnt, pdata->hw_feat.rx_q_cnt);
|
||
|
for (i = 0; i < q_count; i++) {
|
||
|
/* Clear all the interrupts which are set */
|
||
|
mtl_q_isr = XGMAC_MTL_IOREAD(pdata, i, MTL_Q_ISR);
|
||
|
XGMAC_MTL_IOWRITE(pdata, i, MTL_Q_ISR, mtl_q_isr);
|
||
|
|
||
|
/* No MTL interrupts to be enabled */
|
||
|
XGMAC_MTL_IOWRITE(pdata, i, MTL_Q_IER, 0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_mac_interrupts(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int mac_ier = 0;
|
||
|
|
||
|
/* Enable Timestamp interrupt */
|
||
|
XGMAC_SET_BITS(mac_ier, MAC_IER, TSIE, 1);
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, MAC_IER, mac_ier);
|
||
|
|
||
|
/* Enable all counter interrupts */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_RIER, ALL_INTERRUPTS, 0xffffffff);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_TIER, ALL_INTERRUPTS, 0xffffffff);
|
||
|
|
||
|
/* Enable MDIO single command completion interrupt */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_MDIOIER, SNGLCOMPIE, 1);
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_ecc_interrupts(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int ecc_isr, ecc_ier = 0;
|
||
|
|
||
|
if (!pdata->vdata->ecc_support)
|
||
|
return;
|
||
|
|
||
|
/* Clear all the interrupts which are set */
|
||
|
ecc_isr = XP_IOREAD(pdata, XP_ECC_ISR);
|
||
|
XP_IOWRITE(pdata, XP_ECC_ISR, ecc_isr);
|
||
|
|
||
|
/* Enable ECC interrupts */
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, TX_DED, 1);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, TX_SEC, 1);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, RX_DED, 1);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, RX_SEC, 1);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, DESC_DED, 1);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, DESC_SEC, 1);
|
||
|
|
||
|
XP_IOWRITE(pdata, XP_ECC_IER, ecc_ier);
|
||
|
}
|
||
|
|
||
|
static void xgbe_disable_ecc_ded(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int ecc_ier;
|
||
|
|
||
|
ecc_ier = XP_IOREAD(pdata, XP_ECC_IER);
|
||
|
|
||
|
/* Disable ECC DED interrupts */
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, TX_DED, 0);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, RX_DED, 0);
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, DESC_DED, 0);
|
||
|
|
||
|
XP_IOWRITE(pdata, XP_ECC_IER, ecc_ier);
|
||
|
}
|
||
|
|
||
|
static void xgbe_disable_ecc_sec(struct xgbe_prv_data *pdata,
|
||
|
enum xgbe_ecc_sec sec)
|
||
|
{
|
||
|
unsigned int ecc_ier;
|
||
|
|
||
|
ecc_ier = XP_IOREAD(pdata, XP_ECC_IER);
|
||
|
|
||
|
/* Disable ECC SEC interrupt */
|
||
|
switch (sec) {
|
||
|
case XGBE_ECC_SEC_TX:
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, TX_SEC, 0);
|
||
|
break;
|
||
|
case XGBE_ECC_SEC_RX:
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, RX_SEC, 0);
|
||
|
break;
|
||
|
case XGBE_ECC_SEC_DESC:
|
||
|
XP_SET_BITS(ecc_ier, XP_ECC_IER, DESC_SEC, 0);
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
XP_IOWRITE(pdata, XP_ECC_IER, ecc_ier);
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_speed(struct xgbe_prv_data *pdata, int speed)
|
||
|
{
|
||
|
unsigned int ss;
|
||
|
|
||
|
switch (speed) {
|
||
|
case SPEED_1000:
|
||
|
ss = 0x03;
|
||
|
break;
|
||
|
case SPEED_2500:
|
||
|
ss = 0x02;
|
||
|
break;
|
||
|
case SPEED_10000:
|
||
|
ss = 0x00;
|
||
|
break;
|
||
|
default:
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
if (XGMAC_IOREAD_BITS(pdata, MAC_TCR, SS) != ss)
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, SS, ss);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_rx_vlan_stripping(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Put the VLAN tag in the Rx descriptor */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLRXS, 1);
|
||
|
|
||
|
/* Don't check the VLAN type */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, DOVLTC, 1);
|
||
|
|
||
|
/* Check only C-TAG (0x8100) packets */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ERSVLM, 0);
|
||
|
|
||
|
/* Don't consider an S-TAG (0x88A8) packet as a VLAN packet */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ESVL, 0);
|
||
|
|
||
|
/* Enable VLAN tag stripping */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLS, 0x3);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_rx_vlan_stripping(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, EVLS, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_rx_vlan_filtering(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Enable VLAN filtering */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 1);
|
||
|
|
||
|
/* Enable VLAN Hash Table filtering */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VTHM, 1);
|
||
|
|
||
|
/* Disable VLAN tag inverse matching */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VTIM, 0);
|
||
|
|
||
|
/* Only filter on the lower 12-bits of the VLAN tag */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, ETV, 1);
|
||
|
|
||
|
/* In order for the VLAN Hash Table filtering to be effective,
|
||
|
* the VLAN tag identifier in the VLAN Tag Register must not
|
||
|
* be zero. Set the VLAN tag identifier to "1" to enable the
|
||
|
* VLAN Hash Table filtering. This implies that a VLAN tag of
|
||
|
* 1 will always pass filtering.
|
||
|
*/
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANTR, VL, 1);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_rx_vlan_filtering(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Disable VLAN filtering */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, VTFE, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static u32 xgbe_vid_crc32_le(__le16 vid_le)
|
||
|
{
|
||
|
u32 crc = ~0;
|
||
|
u32 temp = 0;
|
||
|
unsigned char *data = (unsigned char *)&vid_le;
|
||
|
unsigned char data_byte = 0;
|
||
|
int i, bits;
|
||
|
|
||
|
bits = get_bitmask_order(VLAN_VID_MASK);
|
||
|
for (i = 0; i < bits; i++) {
|
||
|
if ((i % 8) == 0)
|
||
|
data_byte = data[i / 8];
|
||
|
|
||
|
temp = ((crc & 1) ^ data_byte) & 1;
|
||
|
crc >>= 1;
|
||
|
data_byte >>= 1;
|
||
|
|
||
|
if (temp)
|
||
|
crc ^= CRC32_POLY_LE;
|
||
|
}
|
||
|
|
||
|
return crc;
|
||
|
}
|
||
|
|
||
|
static int xgbe_update_vlan_hash_table(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
u32 crc;
|
||
|
u16 vid;
|
||
|
__le16 vid_le;
|
||
|
u16 vlan_hash_table = 0;
|
||
|
|
||
|
/* Generate the VLAN Hash Table value */
|
||
|
for_each_set_bit(vid, pdata->active_vlans, VLAN_N_VID) {
|
||
|
/* Get the CRC32 value of the VLAN ID */
|
||
|
vid_le = cpu_to_le16(vid);
|
||
|
crc = bitrev32(~xgbe_vid_crc32_le(vid_le)) >> 28;
|
||
|
|
||
|
vlan_hash_table |= (1 << crc);
|
||
|
}
|
||
|
|
||
|
/* Set the VLAN Hash Table filtering register */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANHTR, VLHT, vlan_hash_table);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_promiscuous_mode(struct xgbe_prv_data *pdata,
|
||
|
unsigned int enable)
|
||
|
{
|
||
|
unsigned int val = enable ? 1 : 0;
|
||
|
|
||
|
if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PR) == val)
|
||
|
return 0;
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "%s promiscuous mode\n",
|
||
|
enable ? "entering" : "leaving");
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PR, val);
|
||
|
|
||
|
/* Hardware will still perform VLAN filtering in promiscuous mode */
|
||
|
if (enable) {
|
||
|
xgbe_disable_rx_vlan_filtering(pdata);
|
||
|
} else {
|
||
|
if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
|
||
|
xgbe_enable_rx_vlan_filtering(pdata);
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_all_multicast_mode(struct xgbe_prv_data *pdata,
|
||
|
unsigned int enable)
|
||
|
{
|
||
|
unsigned int val = enable ? 1 : 0;
|
||
|
|
||
|
if (XGMAC_IOREAD_BITS(pdata, MAC_PFR, PM) == val)
|
||
|
return 0;
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "%s allmulti mode\n",
|
||
|
enable ? "entering" : "leaving");
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, PM, val);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_set_mac_reg(struct xgbe_prv_data *pdata,
|
||
|
struct netdev_hw_addr *ha, unsigned int *mac_reg)
|
||
|
{
|
||
|
unsigned int mac_addr_hi, mac_addr_lo;
|
||
|
u8 *mac_addr;
|
||
|
|
||
|
mac_addr_lo = 0;
|
||
|
mac_addr_hi = 0;
|
||
|
|
||
|
if (ha) {
|
||
|
mac_addr = (u8 *)&mac_addr_lo;
|
||
|
mac_addr[0] = ha->addr[0];
|
||
|
mac_addr[1] = ha->addr[1];
|
||
|
mac_addr[2] = ha->addr[2];
|
||
|
mac_addr[3] = ha->addr[3];
|
||
|
mac_addr = (u8 *)&mac_addr_hi;
|
||
|
mac_addr[0] = ha->addr[4];
|
||
|
mac_addr[1] = ha->addr[5];
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"adding mac address %pM at %#x\n",
|
||
|
ha->addr, *mac_reg);
|
||
|
|
||
|
XGMAC_SET_BITS(mac_addr_hi, MAC_MACA1HR, AE, 1);
|
||
|
}
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, *mac_reg, mac_addr_hi);
|
||
|
*mac_reg += MAC_MACA_INC;
|
||
|
XGMAC_IOWRITE(pdata, *mac_reg, mac_addr_lo);
|
||
|
*mac_reg += MAC_MACA_INC;
|
||
|
}
|
||
|
|
||
|
static void xgbe_set_mac_addn_addrs(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct net_device *netdev = pdata->netdev;
|
||
|
struct netdev_hw_addr *ha;
|
||
|
unsigned int mac_reg;
|
||
|
unsigned int addn_macs;
|
||
|
|
||
|
mac_reg = MAC_MACA1HR;
|
||
|
addn_macs = pdata->hw_feat.addn_mac;
|
||
|
|
||
|
if (netdev_uc_count(netdev) > addn_macs) {
|
||
|
xgbe_set_promiscuous_mode(pdata, 1);
|
||
|
} else {
|
||
|
netdev_for_each_uc_addr(ha, netdev) {
|
||
|
xgbe_set_mac_reg(pdata, ha, &mac_reg);
|
||
|
addn_macs--;
|
||
|
}
|
||
|
|
||
|
if (netdev_mc_count(netdev) > addn_macs) {
|
||
|
xgbe_set_all_multicast_mode(pdata, 1);
|
||
|
} else {
|
||
|
netdev_for_each_mc_addr(ha, netdev) {
|
||
|
xgbe_set_mac_reg(pdata, ha, &mac_reg);
|
||
|
addn_macs--;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Clear remaining additional MAC address entries */
|
||
|
while (addn_macs--)
|
||
|
xgbe_set_mac_reg(pdata, NULL, &mac_reg);
|
||
|
}
|
||
|
|
||
|
static void xgbe_set_mac_hash_table(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct net_device *netdev = pdata->netdev;
|
||
|
struct netdev_hw_addr *ha;
|
||
|
unsigned int hash_reg;
|
||
|
unsigned int hash_table_shift, hash_table_count;
|
||
|
u32 hash_table[XGBE_MAC_HASH_TABLE_SIZE];
|
||
|
u32 crc;
|
||
|
unsigned int i;
|
||
|
|
||
|
hash_table_shift = 26 - (pdata->hw_feat.hash_table_size >> 7);
|
||
|
hash_table_count = pdata->hw_feat.hash_table_size / 32;
|
||
|
memset(hash_table, 0, sizeof(hash_table));
|
||
|
|
||
|
/* Build the MAC Hash Table register values */
|
||
|
netdev_for_each_uc_addr(ha, netdev) {
|
||
|
crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
|
||
|
crc >>= hash_table_shift;
|
||
|
hash_table[crc >> 5] |= (1 << (crc & 0x1f));
|
||
|
}
|
||
|
|
||
|
netdev_for_each_mc_addr(ha, netdev) {
|
||
|
crc = bitrev32(~crc32_le(~0, ha->addr, ETH_ALEN));
|
||
|
crc >>= hash_table_shift;
|
||
|
hash_table[crc >> 5] |= (1 << (crc & 0x1f));
|
||
|
}
|
||
|
|
||
|
/* Set the MAC Hash Table registers */
|
||
|
hash_reg = MAC_HTR0;
|
||
|
for (i = 0; i < hash_table_count; i++) {
|
||
|
XGMAC_IOWRITE(pdata, hash_reg, hash_table[i]);
|
||
|
hash_reg += MAC_HTR_INC;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int xgbe_add_mac_addresses(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (pdata->hw_feat.hash_table_size)
|
||
|
xgbe_set_mac_hash_table(pdata);
|
||
|
else
|
||
|
xgbe_set_mac_addn_addrs(pdata);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_mac_address(struct xgbe_prv_data *pdata, u8 *addr)
|
||
|
{
|
||
|
unsigned int mac_addr_hi, mac_addr_lo;
|
||
|
|
||
|
mac_addr_hi = (addr[5] << 8) | (addr[4] << 0);
|
||
|
mac_addr_lo = (addr[3] << 24) | (addr[2] << 16) |
|
||
|
(addr[1] << 8) | (addr[0] << 0);
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, MAC_MACA0HR, mac_addr_hi);
|
||
|
XGMAC_IOWRITE(pdata, MAC_MACA0LR, mac_addr_lo);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_config_rx_mode(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct net_device *netdev = pdata->netdev;
|
||
|
unsigned int pr_mode, am_mode;
|
||
|
|
||
|
pr_mode = ((netdev->flags & IFF_PROMISC) != 0);
|
||
|
am_mode = ((netdev->flags & IFF_ALLMULTI) != 0);
|
||
|
|
||
|
xgbe_set_promiscuous_mode(pdata, pr_mode);
|
||
|
xgbe_set_all_multicast_mode(pdata, am_mode);
|
||
|
|
||
|
xgbe_add_mac_addresses(pdata);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_clr_gpio(struct xgbe_prv_data *pdata, unsigned int gpio)
|
||
|
{
|
||
|
unsigned int reg;
|
||
|
|
||
|
if (gpio > 15)
|
||
|
return -EINVAL;
|
||
|
|
||
|
reg = XGMAC_IOREAD(pdata, MAC_GPIOSR);
|
||
|
|
||
|
reg &= ~(1 << (gpio + 16));
|
||
|
XGMAC_IOWRITE(pdata, MAC_GPIOSR, reg);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_gpio(struct xgbe_prv_data *pdata, unsigned int gpio)
|
||
|
{
|
||
|
unsigned int reg;
|
||
|
|
||
|
if (gpio > 15)
|
||
|
return -EINVAL;
|
||
|
|
||
|
reg = XGMAC_IOREAD(pdata, MAC_GPIOSR);
|
||
|
|
||
|
reg |= (1 << (gpio + 16));
|
||
|
XGMAC_IOWRITE(pdata, MAC_GPIOSR, reg);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_read_mmd_regs_v2(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg)
|
||
|
{
|
||
|
unsigned long flags;
|
||
|
unsigned int mmd_address, index, offset;
|
||
|
int mmd_data;
|
||
|
|
||
|
if (mmd_reg & MII_ADDR_C45)
|
||
|
mmd_address = mmd_reg & ~MII_ADDR_C45;
|
||
|
else
|
||
|
mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
|
||
|
|
||
|
/* The PCS registers are accessed using mmio. The underlying
|
||
|
* management interface uses indirect addressing to access the MMD
|
||
|
* register sets. This requires accessing of the PCS register in two
|
||
|
* phases, an address phase and a data phase.
|
||
|
*
|
||
|
* The mmio interface is based on 16-bit offsets and values. All
|
||
|
* register offsets must therefore be adjusted by left shifting the
|
||
|
* offset 1 bit and reading 16 bits of data.
|
||
|
*/
|
||
|
mmd_address <<= 1;
|
||
|
index = mmd_address & ~pdata->xpcs_window_mask;
|
||
|
offset = pdata->xpcs_window + (mmd_address & pdata->xpcs_window_mask);
|
||
|
|
||
|
spin_lock_irqsave(&pdata->xpcs_lock, flags);
|
||
|
XPCS32_IOWRITE(pdata, pdata->xpcs_window_sel_reg, index);
|
||
|
mmd_data = XPCS16_IOREAD(pdata, offset);
|
||
|
spin_unlock_irqrestore(&pdata->xpcs_lock, flags);
|
||
|
|
||
|
return mmd_data;
|
||
|
}
|
||
|
|
||
|
static void xgbe_write_mmd_regs_v2(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg, int mmd_data)
|
||
|
{
|
||
|
unsigned long flags;
|
||
|
unsigned int mmd_address, index, offset;
|
||
|
|
||
|
if (mmd_reg & MII_ADDR_C45)
|
||
|
mmd_address = mmd_reg & ~MII_ADDR_C45;
|
||
|
else
|
||
|
mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
|
||
|
|
||
|
/* The PCS registers are accessed using mmio. The underlying
|
||
|
* management interface uses indirect addressing to access the MMD
|
||
|
* register sets. This requires accessing of the PCS register in two
|
||
|
* phases, an address phase and a data phase.
|
||
|
*
|
||
|
* The mmio interface is based on 16-bit offsets and values. All
|
||
|
* register offsets must therefore be adjusted by left shifting the
|
||
|
* offset 1 bit and writing 16 bits of data.
|
||
|
*/
|
||
|
mmd_address <<= 1;
|
||
|
index = mmd_address & ~pdata->xpcs_window_mask;
|
||
|
offset = pdata->xpcs_window + (mmd_address & pdata->xpcs_window_mask);
|
||
|
|
||
|
spin_lock_irqsave(&pdata->xpcs_lock, flags);
|
||
|
XPCS32_IOWRITE(pdata, pdata->xpcs_window_sel_reg, index);
|
||
|
XPCS16_IOWRITE(pdata, offset, mmd_data);
|
||
|
spin_unlock_irqrestore(&pdata->xpcs_lock, flags);
|
||
|
}
|
||
|
|
||
|
static int xgbe_read_mmd_regs_v1(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg)
|
||
|
{
|
||
|
unsigned long flags;
|
||
|
unsigned int mmd_address;
|
||
|
int mmd_data;
|
||
|
|
||
|
if (mmd_reg & MII_ADDR_C45)
|
||
|
mmd_address = mmd_reg & ~MII_ADDR_C45;
|
||
|
else
|
||
|
mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
|
||
|
|
||
|
/* The PCS registers are accessed using mmio. The underlying APB3
|
||
|
* management interface uses indirect addressing to access the MMD
|
||
|
* register sets. This requires accessing of the PCS register in two
|
||
|
* phases, an address phase and a data phase.
|
||
|
*
|
||
|
* The mmio interface is based on 32-bit offsets and values. All
|
||
|
* register offsets must therefore be adjusted by left shifting the
|
||
|
* offset 2 bits and reading 32 bits of data.
|
||
|
*/
|
||
|
spin_lock_irqsave(&pdata->xpcs_lock, flags);
|
||
|
XPCS32_IOWRITE(pdata, PCS_V1_WINDOW_SELECT, mmd_address >> 8);
|
||
|
mmd_data = XPCS32_IOREAD(pdata, (mmd_address & 0xff) << 2);
|
||
|
spin_unlock_irqrestore(&pdata->xpcs_lock, flags);
|
||
|
|
||
|
return mmd_data;
|
||
|
}
|
||
|
|
||
|
static void xgbe_write_mmd_regs_v1(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg, int mmd_data)
|
||
|
{
|
||
|
unsigned int mmd_address;
|
||
|
unsigned long flags;
|
||
|
|
||
|
if (mmd_reg & MII_ADDR_C45)
|
||
|
mmd_address = mmd_reg & ~MII_ADDR_C45;
|
||
|
else
|
||
|
mmd_address = (pdata->mdio_mmd << 16) | (mmd_reg & 0xffff);
|
||
|
|
||
|
/* The PCS registers are accessed using mmio. The underlying APB3
|
||
|
* management interface uses indirect addressing to access the MMD
|
||
|
* register sets. This requires accessing of the PCS register in two
|
||
|
* phases, an address phase and a data phase.
|
||
|
*
|
||
|
* The mmio interface is based on 32-bit offsets and values. All
|
||
|
* register offsets must therefore be adjusted by left shifting the
|
||
|
* offset 2 bits and writing 32 bits of data.
|
||
|
*/
|
||
|
spin_lock_irqsave(&pdata->xpcs_lock, flags);
|
||
|
XPCS32_IOWRITE(pdata, PCS_V1_WINDOW_SELECT, mmd_address >> 8);
|
||
|
XPCS32_IOWRITE(pdata, (mmd_address & 0xff) << 2, mmd_data);
|
||
|
spin_unlock_irqrestore(&pdata->xpcs_lock, flags);
|
||
|
}
|
||
|
|
||
|
static int xgbe_read_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg)
|
||
|
{
|
||
|
switch (pdata->vdata->xpcs_access) {
|
||
|
case XGBE_XPCS_ACCESS_V1:
|
||
|
return xgbe_read_mmd_regs_v1(pdata, prtad, mmd_reg);
|
||
|
|
||
|
case XGBE_XPCS_ACCESS_V2:
|
||
|
default:
|
||
|
return xgbe_read_mmd_regs_v2(pdata, prtad, mmd_reg);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_write_mmd_regs(struct xgbe_prv_data *pdata, int prtad,
|
||
|
int mmd_reg, int mmd_data)
|
||
|
{
|
||
|
switch (pdata->vdata->xpcs_access) {
|
||
|
case XGBE_XPCS_ACCESS_V1:
|
||
|
return xgbe_write_mmd_regs_v1(pdata, prtad, mmd_reg, mmd_data);
|
||
|
|
||
|
case XGBE_XPCS_ACCESS_V2:
|
||
|
default:
|
||
|
return xgbe_write_mmd_regs_v2(pdata, prtad, mmd_reg, mmd_data);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_create_mdio_sca(int port, int reg)
|
||
|
{
|
||
|
unsigned int mdio_sca, da;
|
||
|
|
||
|
da = (reg & MII_ADDR_C45) ? reg >> 16 : 0;
|
||
|
|
||
|
mdio_sca = 0;
|
||
|
XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, RA, reg);
|
||
|
XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, PA, port);
|
||
|
XGMAC_SET_BITS(mdio_sca, MAC_MDIOSCAR, DA, da);
|
||
|
|
||
|
return mdio_sca;
|
||
|
}
|
||
|
|
||
|
static int xgbe_write_ext_mii_regs(struct xgbe_prv_data *pdata, int addr,
|
||
|
int reg, u16 val)
|
||
|
{
|
||
|
unsigned int mdio_sca, mdio_sccd;
|
||
|
|
||
|
reinit_completion(&pdata->mdio_complete);
|
||
|
|
||
|
mdio_sca = xgbe_create_mdio_sca(addr, reg);
|
||
|
XGMAC_IOWRITE(pdata, MAC_MDIOSCAR, mdio_sca);
|
||
|
|
||
|
mdio_sccd = 0;
|
||
|
XGMAC_SET_BITS(mdio_sccd, MAC_MDIOSCCDR, DATA, val);
|
||
|
XGMAC_SET_BITS(mdio_sccd, MAC_MDIOSCCDR, CMD, 1);
|
||
|
XGMAC_SET_BITS(mdio_sccd, MAC_MDIOSCCDR, BUSY, 1);
|
||
|
XGMAC_IOWRITE(pdata, MAC_MDIOSCCDR, mdio_sccd);
|
||
|
|
||
|
if (!wait_for_completion_timeout(&pdata->mdio_complete, HZ)) {
|
||
|
netdev_err(pdata->netdev, "mdio write operation timed out\n");
|
||
|
return -ETIMEDOUT;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_read_ext_mii_regs(struct xgbe_prv_data *pdata, int addr,
|
||
|
int reg)
|
||
|
{
|
||
|
unsigned int mdio_sca, mdio_sccd;
|
||
|
|
||
|
reinit_completion(&pdata->mdio_complete);
|
||
|
|
||
|
mdio_sca = xgbe_create_mdio_sca(addr, reg);
|
||
|
XGMAC_IOWRITE(pdata, MAC_MDIOSCAR, mdio_sca);
|
||
|
|
||
|
mdio_sccd = 0;
|
||
|
XGMAC_SET_BITS(mdio_sccd, MAC_MDIOSCCDR, CMD, 3);
|
||
|
XGMAC_SET_BITS(mdio_sccd, MAC_MDIOSCCDR, BUSY, 1);
|
||
|
XGMAC_IOWRITE(pdata, MAC_MDIOSCCDR, mdio_sccd);
|
||
|
|
||
|
if (!wait_for_completion_timeout(&pdata->mdio_complete, HZ)) {
|
||
|
netdev_err(pdata->netdev, "mdio read operation timed out\n");
|
||
|
return -ETIMEDOUT;
|
||
|
}
|
||
|
|
||
|
return XGMAC_IOREAD_BITS(pdata, MAC_MDIOSCCDR, DATA);
|
||
|
}
|
||
|
|
||
|
static int xgbe_set_ext_mii_mode(struct xgbe_prv_data *pdata, unsigned int port,
|
||
|
enum xgbe_mdio_mode mode)
|
||
|
{
|
||
|
unsigned int reg_val = XGMAC_IOREAD(pdata, MAC_MDIOCL22R);
|
||
|
|
||
|
switch (mode) {
|
||
|
case XGBE_MDIO_MODE_CL22:
|
||
|
if (port > XGMAC_MAX_C22_PORT)
|
||
|
return -EINVAL;
|
||
|
reg_val |= (1 << port);
|
||
|
break;
|
||
|
case XGBE_MDIO_MODE_CL45:
|
||
|
break;
|
||
|
default:
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, MAC_MDIOCL22R, reg_val);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_tx_complete(struct xgbe_ring_desc *rdesc)
|
||
|
{
|
||
|
return !XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN);
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_rx_csum(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, IPC, 0);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_rx_csum(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, IPC, 1);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_tx_desc_reset(struct xgbe_ring_data *rdata)
|
||
|
{
|
||
|
struct xgbe_ring_desc *rdesc = rdata->rdesc;
|
||
|
|
||
|
/* Reset the Tx descriptor
|
||
|
* Set buffer 1 (lo) address to zero
|
||
|
* Set buffer 1 (hi) address to zero
|
||
|
* Reset all other control bits (IC, TTSE, B2L & B1L)
|
||
|
* Reset all other control bits (OWN, CTXT, FD, LD, CPC, CIC, etc)
|
||
|
*/
|
||
|
rdesc->desc0 = 0;
|
||
|
rdesc->desc1 = 0;
|
||
|
rdesc->desc2 = 0;
|
||
|
rdesc->desc3 = 0;
|
||
|
|
||
|
/* Make sure ownership is written to the descriptor */
|
||
|
dma_wmb();
|
||
|
}
|
||
|
|
||
|
static void xgbe_tx_desc_init(struct xgbe_channel *channel)
|
||
|
{
|
||
|
struct xgbe_ring *ring = channel->tx_ring;
|
||
|
struct xgbe_ring_data *rdata;
|
||
|
int i;
|
||
|
int start_index = ring->cur;
|
||
|
|
||
|
DBGPR("-->tx_desc_init\n");
|
||
|
|
||
|
/* Initialze all descriptors */
|
||
|
for (i = 0; i < ring->rdesc_count; i++) {
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, i);
|
||
|
|
||
|
/* Initialize Tx descriptor */
|
||
|
xgbe_tx_desc_reset(rdata);
|
||
|
}
|
||
|
|
||
|
/* Update the total number of Tx descriptors */
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_TDRLR, ring->rdesc_count - 1);
|
||
|
|
||
|
/* Update the starting address of descriptor ring */
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, start_index);
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_TDLR_HI,
|
||
|
upper_32_bits(rdata->rdesc_dma));
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_TDLR_LO,
|
||
|
lower_32_bits(rdata->rdesc_dma));
|
||
|
|
||
|
DBGPR("<--tx_desc_init\n");
|
||
|
}
|
||
|
|
||
|
static void xgbe_rx_desc_reset(struct xgbe_prv_data *pdata,
|
||
|
struct xgbe_ring_data *rdata, unsigned int index)
|
||
|
{
|
||
|
struct xgbe_ring_desc *rdesc = rdata->rdesc;
|
||
|
unsigned int rx_usecs = pdata->rx_usecs;
|
||
|
unsigned int rx_frames = pdata->rx_frames;
|
||
|
unsigned int inte;
|
||
|
dma_addr_t hdr_dma, buf_dma;
|
||
|
|
||
|
if (!rx_usecs && !rx_frames) {
|
||
|
/* No coalescing, interrupt for every descriptor */
|
||
|
inte = 1;
|
||
|
} else {
|
||
|
/* Set interrupt based on Rx frame coalescing setting */
|
||
|
if (rx_frames && !((index + 1) % rx_frames))
|
||
|
inte = 1;
|
||
|
else
|
||
|
inte = 0;
|
||
|
}
|
||
|
|
||
|
/* Reset the Rx descriptor
|
||
|
* Set buffer 1 (lo) address to header dma address (lo)
|
||
|
* Set buffer 1 (hi) address to header dma address (hi)
|
||
|
* Set buffer 2 (lo) address to buffer dma address (lo)
|
||
|
* Set buffer 2 (hi) address to buffer dma address (hi) and
|
||
|
* set control bits OWN and INTE
|
||
|
*/
|
||
|
hdr_dma = rdata->rx.hdr.dma_base + rdata->rx.hdr.dma_off;
|
||
|
buf_dma = rdata->rx.buf.dma_base + rdata->rx.buf.dma_off;
|
||
|
rdesc->desc0 = cpu_to_le32(lower_32_bits(hdr_dma));
|
||
|
rdesc->desc1 = cpu_to_le32(upper_32_bits(hdr_dma));
|
||
|
rdesc->desc2 = cpu_to_le32(lower_32_bits(buf_dma));
|
||
|
rdesc->desc3 = cpu_to_le32(upper_32_bits(buf_dma));
|
||
|
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, INTE, inte);
|
||
|
|
||
|
/* Since the Rx DMA engine is likely running, make sure everything
|
||
|
* is written to the descriptor(s) before setting the OWN bit
|
||
|
* for the descriptor
|
||
|
*/
|
||
|
dma_wmb();
|
||
|
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, OWN, 1);
|
||
|
|
||
|
/* Make sure ownership is written to the descriptor */
|
||
|
dma_wmb();
|
||
|
}
|
||
|
|
||
|
static void xgbe_rx_desc_init(struct xgbe_channel *channel)
|
||
|
{
|
||
|
struct xgbe_prv_data *pdata = channel->pdata;
|
||
|
struct xgbe_ring *ring = channel->rx_ring;
|
||
|
struct xgbe_ring_data *rdata;
|
||
|
unsigned int start_index = ring->cur;
|
||
|
unsigned int i;
|
||
|
|
||
|
DBGPR("-->rx_desc_init\n");
|
||
|
|
||
|
/* Initialize all descriptors */
|
||
|
for (i = 0; i < ring->rdesc_count; i++) {
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, i);
|
||
|
|
||
|
/* Initialize Rx descriptor */
|
||
|
xgbe_rx_desc_reset(pdata, rdata, i);
|
||
|
}
|
||
|
|
||
|
/* Update the total number of Rx descriptors */
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_RDRLR, ring->rdesc_count - 1);
|
||
|
|
||
|
/* Update the starting address of descriptor ring */
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, start_index);
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_RDLR_HI,
|
||
|
upper_32_bits(rdata->rdesc_dma));
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_RDLR_LO,
|
||
|
lower_32_bits(rdata->rdesc_dma));
|
||
|
|
||
|
/* Update the Rx Descriptor Tail Pointer */
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, start_index + ring->rdesc_count - 1);
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_RDTR_LO,
|
||
|
lower_32_bits(rdata->rdesc_dma));
|
||
|
|
||
|
DBGPR("<--rx_desc_init\n");
|
||
|
}
|
||
|
|
||
|
static void xgbe_update_tstamp_addend(struct xgbe_prv_data *pdata,
|
||
|
unsigned int addend)
|
||
|
{
|
||
|
unsigned int count = 10000;
|
||
|
|
||
|
/* Set the addend register value and tell the device */
|
||
|
XGMAC_IOWRITE(pdata, MAC_TSAR, addend);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TSCR, TSADDREG, 1);
|
||
|
|
||
|
/* Wait for addend update to complete */
|
||
|
while (--count && XGMAC_IOREAD_BITS(pdata, MAC_TSCR, TSADDREG))
|
||
|
udelay(5);
|
||
|
|
||
|
if (!count)
|
||
|
netdev_err(pdata->netdev,
|
||
|
"timed out updating timestamp addend register\n");
|
||
|
}
|
||
|
|
||
|
static void xgbe_set_tstamp_time(struct xgbe_prv_data *pdata, unsigned int sec,
|
||
|
unsigned int nsec)
|
||
|
{
|
||
|
unsigned int count = 10000;
|
||
|
|
||
|
/* Set the time values and tell the device */
|
||
|
XGMAC_IOWRITE(pdata, MAC_STSUR, sec);
|
||
|
XGMAC_IOWRITE(pdata, MAC_STNUR, nsec);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TSCR, TSINIT, 1);
|
||
|
|
||
|
/* Wait for time update to complete */
|
||
|
while (--count && XGMAC_IOREAD_BITS(pdata, MAC_TSCR, TSINIT))
|
||
|
udelay(5);
|
||
|
|
||
|
if (!count)
|
||
|
netdev_err(pdata->netdev, "timed out initializing timestamp\n");
|
||
|
}
|
||
|
|
||
|
static u64 xgbe_get_tstamp_time(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
u64 nsec;
|
||
|
|
||
|
nsec = XGMAC_IOREAD(pdata, MAC_STSR);
|
||
|
nsec *= NSEC_PER_SEC;
|
||
|
nsec += XGMAC_IOREAD(pdata, MAC_STNR);
|
||
|
|
||
|
return nsec;
|
||
|
}
|
||
|
|
||
|
static u64 xgbe_get_tx_tstamp(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int tx_snr, tx_ssr;
|
||
|
u64 nsec;
|
||
|
|
||
|
if (pdata->vdata->tx_tstamp_workaround) {
|
||
|
tx_snr = XGMAC_IOREAD(pdata, MAC_TXSNR);
|
||
|
tx_ssr = XGMAC_IOREAD(pdata, MAC_TXSSR);
|
||
|
} else {
|
||
|
tx_ssr = XGMAC_IOREAD(pdata, MAC_TXSSR);
|
||
|
tx_snr = XGMAC_IOREAD(pdata, MAC_TXSNR);
|
||
|
}
|
||
|
|
||
|
if (XGMAC_GET_BITS(tx_snr, MAC_TXSNR, TXTSSTSMIS))
|
||
|
return 0;
|
||
|
|
||
|
nsec = tx_ssr;
|
||
|
nsec *= NSEC_PER_SEC;
|
||
|
nsec += tx_snr;
|
||
|
|
||
|
return nsec;
|
||
|
}
|
||
|
|
||
|
static void xgbe_get_rx_tstamp(struct xgbe_packet_data *packet,
|
||
|
struct xgbe_ring_desc *rdesc)
|
||
|
{
|
||
|
u64 nsec;
|
||
|
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_CONTEXT_DESC3, TSA) &&
|
||
|
!XGMAC_GET_BITS_LE(rdesc->desc3, RX_CONTEXT_DESC3, TSD)) {
|
||
|
nsec = le32_to_cpu(rdesc->desc1);
|
||
|
nsec <<= 32;
|
||
|
nsec |= le32_to_cpu(rdesc->desc0);
|
||
|
if (nsec != 0xffffffffffffffffULL) {
|
||
|
packet->rx_tstamp = nsec;
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
RX_TSTAMP, 1);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int xgbe_config_tstamp(struct xgbe_prv_data *pdata,
|
||
|
unsigned int mac_tscr)
|
||
|
{
|
||
|
/* Set one nano-second accuracy */
|
||
|
XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSCTRLSSR, 1);
|
||
|
|
||
|
/* Set fine timestamp update */
|
||
|
XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TSCFUPDT, 1);
|
||
|
|
||
|
/* Overwrite earlier timestamps */
|
||
|
XGMAC_SET_BITS(mac_tscr, MAC_TSCR, TXTSSTSM, 1);
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, MAC_TSCR, mac_tscr);
|
||
|
|
||
|
/* Exit if timestamping is not enabled */
|
||
|
if (!XGMAC_GET_BITS(mac_tscr, MAC_TSCR, TSENA))
|
||
|
return 0;
|
||
|
|
||
|
/* Initialize time registers */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_SSIR, SSINC, XGBE_TSTAMP_SSINC);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_SSIR, SNSINC, XGBE_TSTAMP_SNSINC);
|
||
|
xgbe_update_tstamp_addend(pdata, pdata->tstamp_addend);
|
||
|
xgbe_set_tstamp_time(pdata, 0, 0);
|
||
|
|
||
|
/* Initialize the timecounter */
|
||
|
timecounter_init(&pdata->tstamp_tc, &pdata->tstamp_cc,
|
||
|
ktime_to_ns(ktime_get_real()));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_tx_start_xmit(struct xgbe_channel *channel,
|
||
|
struct xgbe_ring *ring)
|
||
|
{
|
||
|
struct xgbe_prv_data *pdata = channel->pdata;
|
||
|
struct xgbe_ring_data *rdata;
|
||
|
|
||
|
/* Make sure everything is written before the register write */
|
||
|
wmb();
|
||
|
|
||
|
/* Issue a poll command to Tx DMA by writing address
|
||
|
* of next immediate free descriptor */
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_TDTR_LO,
|
||
|
lower_32_bits(rdata->rdesc_dma));
|
||
|
|
||
|
/* Start the Tx timer */
|
||
|
if (pdata->tx_usecs && !channel->tx_timer_active) {
|
||
|
channel->tx_timer_active = 1;
|
||
|
mod_timer(&channel->tx_timer,
|
||
|
jiffies + usecs_to_jiffies(pdata->tx_usecs));
|
||
|
}
|
||
|
|
||
|
ring->tx.xmit_more = 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_dev_xmit(struct xgbe_channel *channel)
|
||
|
{
|
||
|
struct xgbe_prv_data *pdata = channel->pdata;
|
||
|
struct xgbe_ring *ring = channel->tx_ring;
|
||
|
struct xgbe_ring_data *rdata;
|
||
|
struct xgbe_ring_desc *rdesc;
|
||
|
struct xgbe_packet_data *packet = &ring->packet_data;
|
||
|
unsigned int tx_packets, tx_bytes;
|
||
|
unsigned int csum, tso, vlan, vxlan;
|
||
|
unsigned int tso_context, vlan_context;
|
||
|
unsigned int tx_set_ic;
|
||
|
int start_index = ring->cur;
|
||
|
int cur_index = ring->cur;
|
||
|
int i;
|
||
|
|
||
|
DBGPR("-->xgbe_dev_xmit\n");
|
||
|
|
||
|
tx_packets = packet->tx_packets;
|
||
|
tx_bytes = packet->tx_bytes;
|
||
|
|
||
|
csum = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
|
||
|
CSUM_ENABLE);
|
||
|
tso = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
|
||
|
TSO_ENABLE);
|
||
|
vlan = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
|
||
|
VLAN_CTAG);
|
||
|
vxlan = XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES,
|
||
|
VXLAN);
|
||
|
|
||
|
if (tso && (packet->mss != ring->tx.cur_mss))
|
||
|
tso_context = 1;
|
||
|
else
|
||
|
tso_context = 0;
|
||
|
|
||
|
if (vlan && (packet->vlan_ctag != ring->tx.cur_vlan_ctag))
|
||
|
vlan_context = 1;
|
||
|
else
|
||
|
vlan_context = 0;
|
||
|
|
||
|
/* Determine if an interrupt should be generated for this Tx:
|
||
|
* Interrupt:
|
||
|
* - Tx frame count exceeds the frame count setting
|
||
|
* - Addition of Tx frame count to the frame count since the
|
||
|
* last interrupt was set exceeds the frame count setting
|
||
|
* No interrupt:
|
||
|
* - No frame count setting specified (ethtool -C ethX tx-frames 0)
|
||
|
* - Addition of Tx frame count to the frame count since the
|
||
|
* last interrupt was set does not exceed the frame count setting
|
||
|
*/
|
||
|
ring->coalesce_count += tx_packets;
|
||
|
if (!pdata->tx_frames)
|
||
|
tx_set_ic = 0;
|
||
|
else if (tx_packets > pdata->tx_frames)
|
||
|
tx_set_ic = 1;
|
||
|
else if ((ring->coalesce_count % pdata->tx_frames) < tx_packets)
|
||
|
tx_set_ic = 1;
|
||
|
else
|
||
|
tx_set_ic = 0;
|
||
|
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, cur_index);
|
||
|
rdesc = rdata->rdesc;
|
||
|
|
||
|
/* Create a context descriptor if this is a TSO packet */
|
||
|
if (tso_context || vlan_context) {
|
||
|
if (tso_context) {
|
||
|
netif_dbg(pdata, tx_queued, pdata->netdev,
|
||
|
"TSO context descriptor, mss=%u\n",
|
||
|
packet->mss);
|
||
|
|
||
|
/* Set the MSS size */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_CONTEXT_DESC2,
|
||
|
MSS, packet->mss);
|
||
|
|
||
|
/* Mark it as a CONTEXT descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
|
||
|
CTXT, 1);
|
||
|
|
||
|
/* Indicate this descriptor contains the MSS */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
|
||
|
TCMSSV, 1);
|
||
|
|
||
|
ring->tx.cur_mss = packet->mss;
|
||
|
}
|
||
|
|
||
|
if (vlan_context) {
|
||
|
netif_dbg(pdata, tx_queued, pdata->netdev,
|
||
|
"VLAN context descriptor, ctag=%u\n",
|
||
|
packet->vlan_ctag);
|
||
|
|
||
|
/* Mark it as a CONTEXT descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
|
||
|
CTXT, 1);
|
||
|
|
||
|
/* Set the VLAN tag */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
|
||
|
VT, packet->vlan_ctag);
|
||
|
|
||
|
/* Indicate this descriptor contains the VLAN tag */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_CONTEXT_DESC3,
|
||
|
VLTV, 1);
|
||
|
|
||
|
ring->tx.cur_vlan_ctag = packet->vlan_ctag;
|
||
|
}
|
||
|
|
||
|
cur_index++;
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, cur_index);
|
||
|
rdesc = rdata->rdesc;
|
||
|
}
|
||
|
|
||
|
/* Update buffer address (for TSO this is the header) */
|
||
|
rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->skb_dma));
|
||
|
rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->skb_dma));
|
||
|
|
||
|
/* Update the buffer length */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, HL_B1L,
|
||
|
rdata->skb_dma_len);
|
||
|
|
||
|
/* VLAN tag insertion check */
|
||
|
if (vlan)
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, VTIR,
|
||
|
TX_NORMAL_DESC2_VLAN_INSERT);
|
||
|
|
||
|
/* Timestamp enablement check */
|
||
|
if (XGMAC_GET_BITS(packet->attributes, TX_PACKET_ATTRIBUTES, PTP))
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, TTSE, 1);
|
||
|
|
||
|
/* Mark it as First Descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, FD, 1);
|
||
|
|
||
|
/* Mark it as a NORMAL descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT, 0);
|
||
|
|
||
|
/* Set OWN bit if not the first descriptor */
|
||
|
if (cur_index != start_index)
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
|
||
|
|
||
|
if (tso) {
|
||
|
/* Enable TSO */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TSE, 1);
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TCPPL,
|
||
|
packet->tcp_payload_len);
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, TCPHDRLEN,
|
||
|
packet->tcp_header_len / 4);
|
||
|
|
||
|
pdata->ext_stats.tx_tso_packets += tx_packets;
|
||
|
} else {
|
||
|
/* Enable CRC and Pad Insertion */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CPC, 0);
|
||
|
|
||
|
/* Enable HW CSUM */
|
||
|
if (csum)
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3,
|
||
|
CIC, 0x3);
|
||
|
|
||
|
/* Set the total length to be transmitted */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, FL,
|
||
|
packet->length);
|
||
|
}
|
||
|
|
||
|
if (vxlan) {
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, VNP,
|
||
|
TX_NORMAL_DESC3_VXLAN_PACKET);
|
||
|
|
||
|
pdata->ext_stats.tx_vxlan_packets += packet->tx_packets;
|
||
|
}
|
||
|
|
||
|
for (i = cur_index - start_index + 1; i < packet->rdesc_count; i++) {
|
||
|
cur_index++;
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, cur_index);
|
||
|
rdesc = rdata->rdesc;
|
||
|
|
||
|
/* Update buffer address */
|
||
|
rdesc->desc0 = cpu_to_le32(lower_32_bits(rdata->skb_dma));
|
||
|
rdesc->desc1 = cpu_to_le32(upper_32_bits(rdata->skb_dma));
|
||
|
|
||
|
/* Update the buffer length */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, HL_B1L,
|
||
|
rdata->skb_dma_len);
|
||
|
|
||
|
/* Set OWN bit */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
|
||
|
|
||
|
/* Mark it as NORMAL descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT, 0);
|
||
|
|
||
|
/* Enable HW CSUM */
|
||
|
if (csum)
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3,
|
||
|
CIC, 0x3);
|
||
|
}
|
||
|
|
||
|
/* Set LAST bit for the last descriptor */
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, LD, 1);
|
||
|
|
||
|
/* Set IC bit based on Tx coalescing settings */
|
||
|
if (tx_set_ic)
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc2, TX_NORMAL_DESC2, IC, 1);
|
||
|
|
||
|
/* Save the Tx info to report back during cleanup */
|
||
|
rdata->tx.packets = tx_packets;
|
||
|
rdata->tx.bytes = tx_bytes;
|
||
|
|
||
|
pdata->ext_stats.txq_packets[channel->queue_index] += tx_packets;
|
||
|
pdata->ext_stats.txq_bytes[channel->queue_index] += tx_bytes;
|
||
|
|
||
|
/* In case the Tx DMA engine is running, make sure everything
|
||
|
* is written to the descriptor(s) before setting the OWN bit
|
||
|
* for the first descriptor
|
||
|
*/
|
||
|
dma_wmb();
|
||
|
|
||
|
/* Set OWN bit for the first descriptor */
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, start_index);
|
||
|
rdesc = rdata->rdesc;
|
||
|
XGMAC_SET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, OWN, 1);
|
||
|
|
||
|
if (netif_msg_tx_queued(pdata))
|
||
|
xgbe_dump_tx_desc(pdata, ring, start_index,
|
||
|
packet->rdesc_count, 1);
|
||
|
|
||
|
/* Make sure ownership is written to the descriptor */
|
||
|
smp_wmb();
|
||
|
|
||
|
ring->cur = cur_index + 1;
|
||
|
if (!packet->skb->xmit_more ||
|
||
|
netif_xmit_stopped(netdev_get_tx_queue(pdata->netdev,
|
||
|
channel->queue_index)))
|
||
|
xgbe_tx_start_xmit(channel, ring);
|
||
|
else
|
||
|
ring->tx.xmit_more = 1;
|
||
|
|
||
|
DBGPR(" %s: descriptors %u to %u written\n",
|
||
|
channel->name, start_index & (ring->rdesc_count - 1),
|
||
|
(ring->cur - 1) & (ring->rdesc_count - 1));
|
||
|
|
||
|
DBGPR("<--xgbe_dev_xmit\n");
|
||
|
}
|
||
|
|
||
|
static int xgbe_dev_read(struct xgbe_channel *channel)
|
||
|
{
|
||
|
struct xgbe_prv_data *pdata = channel->pdata;
|
||
|
struct xgbe_ring *ring = channel->rx_ring;
|
||
|
struct xgbe_ring_data *rdata;
|
||
|
struct xgbe_ring_desc *rdesc;
|
||
|
struct xgbe_packet_data *packet = &ring->packet_data;
|
||
|
struct net_device *netdev = pdata->netdev;
|
||
|
unsigned int err, etlt, l34t;
|
||
|
|
||
|
DBGPR("-->xgbe_dev_read: cur = %d\n", ring->cur);
|
||
|
|
||
|
rdata = XGBE_GET_DESC_DATA(ring, ring->cur);
|
||
|
rdesc = rdata->rdesc;
|
||
|
|
||
|
/* Check for data availability */
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, OWN))
|
||
|
return 1;
|
||
|
|
||
|
/* Make sure descriptor fields are read after reading the OWN bit */
|
||
|
dma_rmb();
|
||
|
|
||
|
if (netif_msg_rx_status(pdata))
|
||
|
xgbe_dump_rx_desc(pdata, ring, ring->cur);
|
||
|
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, CTXT)) {
|
||
|
/* Timestamp Context Descriptor */
|
||
|
xgbe_get_rx_tstamp(packet, rdesc);
|
||
|
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CONTEXT, 1);
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CONTEXT_NEXT, 0);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/* Normal Descriptor, be sure Context Descriptor bit is off */
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES, CONTEXT, 0);
|
||
|
|
||
|
/* Indicate if a Context Descriptor is next */
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, CDA))
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CONTEXT_NEXT, 1);
|
||
|
|
||
|
/* Get the header length */
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, FD)) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
FIRST, 1);
|
||
|
rdata->rx.hdr_len = XGMAC_GET_BITS_LE(rdesc->desc2,
|
||
|
RX_NORMAL_DESC2, HL);
|
||
|
if (rdata->rx.hdr_len)
|
||
|
pdata->ext_stats.rx_split_header_packets++;
|
||
|
} else {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
FIRST, 0);
|
||
|
}
|
||
|
|
||
|
/* Get the RSS hash */
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, RSV)) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
RSS_HASH, 1);
|
||
|
|
||
|
packet->rss_hash = le32_to_cpu(rdesc->desc1);
|
||
|
|
||
|
l34t = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, L34T);
|
||
|
switch (l34t) {
|
||
|
case RX_DESC3_L34T_IPV4_TCP:
|
||
|
case RX_DESC3_L34T_IPV4_UDP:
|
||
|
case RX_DESC3_L34T_IPV6_TCP:
|
||
|
case RX_DESC3_L34T_IPV6_UDP:
|
||
|
packet->rss_hash_type = PKT_HASH_TYPE_L4;
|
||
|
break;
|
||
|
default:
|
||
|
packet->rss_hash_type = PKT_HASH_TYPE_L3;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Not all the data has been transferred for this packet */
|
||
|
if (!XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, LD))
|
||
|
return 0;
|
||
|
|
||
|
/* This is the last of the data for this packet */
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
LAST, 1);
|
||
|
|
||
|
/* Get the packet length */
|
||
|
rdata->rx.len = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, PL);
|
||
|
|
||
|
/* Set checksum done indicator as appropriate */
|
||
|
if (netdev->features & NETIF_F_RXCSUM) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CSUM_DONE, 1);
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
TNPCSUM_DONE, 1);
|
||
|
}
|
||
|
|
||
|
/* Set the tunneled packet indicator */
|
||
|
if (XGMAC_GET_BITS_LE(rdesc->desc2, RX_NORMAL_DESC2, TNP)) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
TNP, 1);
|
||
|
pdata->ext_stats.rx_vxlan_packets++;
|
||
|
|
||
|
l34t = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, L34T);
|
||
|
switch (l34t) {
|
||
|
case RX_DESC3_L34T_IPV4_UNKNOWN:
|
||
|
case RX_DESC3_L34T_IPV6_UNKNOWN:
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
TNPCSUM_DONE, 0);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Check for errors (only valid in last descriptor) */
|
||
|
err = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, ES);
|
||
|
etlt = XGMAC_GET_BITS_LE(rdesc->desc3, RX_NORMAL_DESC3, ETLT);
|
||
|
netif_dbg(pdata, rx_status, netdev, "err=%u, etlt=%#x\n", err, etlt);
|
||
|
|
||
|
if (!err || !etlt) {
|
||
|
/* No error if err is 0 or etlt is 0 */
|
||
|
if ((etlt == 0x09) &&
|
||
|
(netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
VLAN_CTAG, 1);
|
||
|
packet->vlan_ctag = XGMAC_GET_BITS_LE(rdesc->desc0,
|
||
|
RX_NORMAL_DESC0,
|
||
|
OVT);
|
||
|
netif_dbg(pdata, rx_status, netdev, "vlan-ctag=%#06x\n",
|
||
|
packet->vlan_ctag);
|
||
|
}
|
||
|
} else {
|
||
|
unsigned int tnp = XGMAC_GET_BITS(packet->attributes,
|
||
|
RX_PACKET_ATTRIBUTES, TNP);
|
||
|
|
||
|
if ((etlt == 0x05) || (etlt == 0x06)) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CSUM_DONE, 0);
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
TNPCSUM_DONE, 0);
|
||
|
pdata->ext_stats.rx_csum_errors++;
|
||
|
} else if (tnp && ((etlt == 0x09) || (etlt == 0x0a))) {
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
CSUM_DONE, 0);
|
||
|
XGMAC_SET_BITS(packet->attributes, RX_PACKET_ATTRIBUTES,
|
||
|
TNPCSUM_DONE, 0);
|
||
|
pdata->ext_stats.rx_vxlan_csum_errors++;
|
||
|
} else {
|
||
|
XGMAC_SET_BITS(packet->errors, RX_PACKET_ERRORS,
|
||
|
FRAME, 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pdata->ext_stats.rxq_packets[channel->queue_index]++;
|
||
|
pdata->ext_stats.rxq_bytes[channel->queue_index] += rdata->rx.len;
|
||
|
|
||
|
DBGPR("<--xgbe_dev_read: %s - descriptor=%u (cur=%d)\n", channel->name,
|
||
|
ring->cur & (ring->rdesc_count - 1), ring->cur);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_is_context_desc(struct xgbe_ring_desc *rdesc)
|
||
|
{
|
||
|
/* Rx and Tx share CTXT bit, so check TDES3.CTXT bit */
|
||
|
return XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, CTXT);
|
||
|
}
|
||
|
|
||
|
static int xgbe_is_last_desc(struct xgbe_ring_desc *rdesc)
|
||
|
{
|
||
|
/* Rx and Tx share LD bit, so check TDES3.LD bit */
|
||
|
return XGMAC_GET_BITS_LE(rdesc->desc3, TX_NORMAL_DESC3, LD);
|
||
|
}
|
||
|
|
||
|
static int xgbe_enable_int(struct xgbe_channel *channel,
|
||
|
enum xgbe_int int_id)
|
||
|
{
|
||
|
switch (int_id) {
|
||
|
case XGMAC_INT_DMA_CH_SR_TI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TIE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TPS:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TXSE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TBU:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TBUE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RIE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RBU:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RBUE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RPS:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RSE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TI_RI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TIE, 1);
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RIE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_FBE:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, FBEE, 1);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_ALL:
|
||
|
channel->curr_ier |= channel->saved_ier;
|
||
|
break;
|
||
|
default:
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, channel->curr_ier);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_disable_int(struct xgbe_channel *channel,
|
||
|
enum xgbe_int int_id)
|
||
|
{
|
||
|
switch (int_id) {
|
||
|
case XGMAC_INT_DMA_CH_SR_TI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TIE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TPS:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TXSE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TBU:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TBUE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RIE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RBU:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RBUE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_RPS:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RSE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_TI_RI:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, TIE, 0);
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, RIE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_CH_SR_FBE:
|
||
|
XGMAC_SET_BITS(channel->curr_ier, DMA_CH_IER, FBEE, 0);
|
||
|
break;
|
||
|
case XGMAC_INT_DMA_ALL:
|
||
|
channel->saved_ier = channel->curr_ier;
|
||
|
channel->curr_ier = 0;
|
||
|
break;
|
||
|
default:
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
XGMAC_DMA_IOWRITE(channel, DMA_CH_IER, channel->curr_ier);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int __xgbe_exit(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int count = 2000;
|
||
|
|
||
|
DBGPR("-->xgbe_exit\n");
|
||
|
|
||
|
/* Issue a software reset */
|
||
|
XGMAC_IOWRITE_BITS(pdata, DMA_MR, SWR, 1);
|
||
|
usleep_range(10, 15);
|
||
|
|
||
|
/* Poll Until Poll Condition */
|
||
|
while (--count && XGMAC_IOREAD_BITS(pdata, DMA_MR, SWR))
|
||
|
usleep_range(500, 600);
|
||
|
|
||
|
if (!count)
|
||
|
return -EBUSY;
|
||
|
|
||
|
DBGPR("<--xgbe_exit\n");
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int xgbe_exit(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
int ret;
|
||
|
|
||
|
/* To guard against possible incorrectly generated interrupts,
|
||
|
* issue the software reset twice.
|
||
|
*/
|
||
|
ret = __xgbe_exit(pdata);
|
||
|
if (ret)
|
||
|
return ret;
|
||
|
|
||
|
return __xgbe_exit(pdata);
|
||
|
}
|
||
|
|
||
|
static int xgbe_flush_tx_queues(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i, count;
|
||
|
|
||
|
if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) < 0x21)
|
||
|
return 0;
|
||
|
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, FTQ, 1);
|
||
|
|
||
|
/* Poll Until Poll Condition */
|
||
|
for (i = 0; i < pdata->tx_q_count; i++) {
|
||
|
count = 2000;
|
||
|
while (--count && XGMAC_MTL_IOREAD_BITS(pdata, i,
|
||
|
MTL_Q_TQOMR, FTQ))
|
||
|
usleep_range(500, 600);
|
||
|
|
||
|
if (!count)
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_dma_bus(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int sbmr;
|
||
|
|
||
|
sbmr = XGMAC_IOREAD(pdata, DMA_SBMR);
|
||
|
|
||
|
/* Set enhanced addressing mode */
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, EAME, 1);
|
||
|
|
||
|
/* Set the System Bus mode */
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, UNDEF, 1);
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, BLEN, pdata->blen >> 2);
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, AAL, pdata->aal);
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, RD_OSR_LMT, pdata->rd_osr_limit - 1);
|
||
|
XGMAC_SET_BITS(sbmr, DMA_SBMR, WR_OSR_LMT, pdata->wr_osr_limit - 1);
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, DMA_SBMR, sbmr);
|
||
|
|
||
|
/* Set descriptor fetching threshold */
|
||
|
if (pdata->vdata->tx_desc_prefetch)
|
||
|
XGMAC_IOWRITE_BITS(pdata, DMA_TXEDMACR, TDPS,
|
||
|
pdata->vdata->tx_desc_prefetch);
|
||
|
|
||
|
if (pdata->vdata->rx_desc_prefetch)
|
||
|
XGMAC_IOWRITE_BITS(pdata, DMA_RXEDMACR, RDPS,
|
||
|
pdata->vdata->rx_desc_prefetch);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_dma_cache(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
XGMAC_IOWRITE(pdata, DMA_AXIARCR, pdata->arcr);
|
||
|
XGMAC_IOWRITE(pdata, DMA_AXIAWCR, pdata->awcr);
|
||
|
if (pdata->awarcr)
|
||
|
XGMAC_IOWRITE(pdata, DMA_AXIAWARCR, pdata->awarcr);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_mtl_mode(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Set Tx to weighted round robin scheduling algorithm */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MTL_OMR, ETSALG, MTL_ETSALG_WRR);
|
||
|
|
||
|
/* Set Tx traffic classes to use WRR algorithm with equal weights */
|
||
|
for (i = 0; i < pdata->hw_feat.tc_cnt; i++) {
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
|
||
|
MTL_TSA_ETS);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_QWR, QW, 1);
|
||
|
}
|
||
|
|
||
|
/* Set Rx to strict priority algorithm */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MTL_OMR, RAA, MTL_RAA_SP);
|
||
|
}
|
||
|
|
||
|
static void xgbe_queue_flow_control_threshold(struct xgbe_prv_data *pdata,
|
||
|
unsigned int queue,
|
||
|
unsigned int q_fifo_size)
|
||
|
{
|
||
|
unsigned int frame_fifo_size;
|
||
|
unsigned int rfa, rfd;
|
||
|
|
||
|
frame_fifo_size = XGMAC_FLOW_CONTROL_ALIGN(xgbe_get_max_frame(pdata));
|
||
|
|
||
|
if (pdata->pfcq[queue] && (q_fifo_size > pdata->pfc_rfa)) {
|
||
|
/* PFC is active for this queue */
|
||
|
rfa = pdata->pfc_rfa;
|
||
|
rfd = rfa + frame_fifo_size;
|
||
|
if (rfd > XGMAC_FLOW_CONTROL_MAX)
|
||
|
rfd = XGMAC_FLOW_CONTROL_MAX;
|
||
|
if (rfa >= XGMAC_FLOW_CONTROL_MAX)
|
||
|
rfa = XGMAC_FLOW_CONTROL_MAX - XGMAC_FLOW_CONTROL_UNIT;
|
||
|
} else {
|
||
|
/* This path deals with just maximum frame sizes which are
|
||
|
* limited to a jumbo frame of 9,000 (plus headers, etc.)
|
||
|
* so we can never exceed the maximum allowable RFA/RFD
|
||
|
* values.
|
||
|
*/
|
||
|
if (q_fifo_size <= 2048) {
|
||
|
/* rx_rfd to zero to signal no flow control */
|
||
|
pdata->rx_rfa[queue] = 0;
|
||
|
pdata->rx_rfd[queue] = 0;
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (q_fifo_size <= 4096) {
|
||
|
/* Between 2048 and 4096 */
|
||
|
pdata->rx_rfa[queue] = 0; /* Full - 1024 bytes */
|
||
|
pdata->rx_rfd[queue] = 1; /* Full - 1536 bytes */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (q_fifo_size <= frame_fifo_size) {
|
||
|
/* Between 4096 and max-frame */
|
||
|
pdata->rx_rfa[queue] = 2; /* Full - 2048 bytes */
|
||
|
pdata->rx_rfd[queue] = 5; /* Full - 3584 bytes */
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
if (q_fifo_size <= (frame_fifo_size * 3)) {
|
||
|
/* Between max-frame and 3 max-frames,
|
||
|
* trigger if we get just over a frame of data and
|
||
|
* resume when we have just under half a frame left.
|
||
|
*/
|
||
|
rfa = q_fifo_size - frame_fifo_size;
|
||
|
rfd = rfa + (frame_fifo_size / 2);
|
||
|
} else {
|
||
|
/* Above 3 max-frames - trigger when just over
|
||
|
* 2 frames of space available
|
||
|
*/
|
||
|
rfa = frame_fifo_size * 2;
|
||
|
rfa += XGMAC_FLOW_CONTROL_UNIT;
|
||
|
rfd = rfa + frame_fifo_size;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
pdata->rx_rfa[queue] = XGMAC_FLOW_CONTROL_VALUE(rfa);
|
||
|
pdata->rx_rfd[queue] = XGMAC_FLOW_CONTROL_VALUE(rfd);
|
||
|
}
|
||
|
|
||
|
static void xgbe_calculate_flow_control_threshold(struct xgbe_prv_data *pdata,
|
||
|
unsigned int *fifo)
|
||
|
{
|
||
|
unsigned int q_fifo_size;
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < pdata->rx_q_count; i++) {
|
||
|
q_fifo_size = (fifo[i] + 1) * XGMAC_FIFO_UNIT;
|
||
|
|
||
|
xgbe_queue_flow_control_threshold(pdata, i, q_fifo_size);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_flow_control_threshold(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
for (i = 0; i < pdata->rx_q_count; i++) {
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQFCR, RFA,
|
||
|
pdata->rx_rfa[i]);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQFCR, RFD,
|
||
|
pdata->rx_rfd[i]);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_get_tx_fifo_size(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* The configured value may not be the actual amount of fifo RAM */
|
||
|
return min_t(unsigned int, pdata->tx_max_fifo_size,
|
||
|
pdata->hw_feat.tx_fifo_size);
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_get_rx_fifo_size(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* The configured value may not be the actual amount of fifo RAM */
|
||
|
return min_t(unsigned int, pdata->rx_max_fifo_size,
|
||
|
pdata->hw_feat.rx_fifo_size);
|
||
|
}
|
||
|
|
||
|
static void xgbe_calculate_equal_fifo(unsigned int fifo_size,
|
||
|
unsigned int queue_count,
|
||
|
unsigned int *fifo)
|
||
|
{
|
||
|
unsigned int q_fifo_size;
|
||
|
unsigned int p_fifo;
|
||
|
unsigned int i;
|
||
|
|
||
|
q_fifo_size = fifo_size / queue_count;
|
||
|
|
||
|
/* Calculate the fifo setting by dividing the queue's fifo size
|
||
|
* by the fifo allocation increment (with 0 representing the
|
||
|
* base allocation increment so decrement the result by 1).
|
||
|
*/
|
||
|
p_fifo = q_fifo_size / XGMAC_FIFO_UNIT;
|
||
|
if (p_fifo)
|
||
|
p_fifo--;
|
||
|
|
||
|
/* Distribute the fifo equally amongst the queues */
|
||
|
for (i = 0; i < queue_count; i++)
|
||
|
fifo[i] = p_fifo;
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_set_nonprio_fifos(unsigned int fifo_size,
|
||
|
unsigned int queue_count,
|
||
|
unsigned int *fifo)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
BUILD_BUG_ON_NOT_POWER_OF_2(XGMAC_FIFO_MIN_ALLOC);
|
||
|
|
||
|
if (queue_count <= IEEE_8021QAZ_MAX_TCS)
|
||
|
return fifo_size;
|
||
|
|
||
|
/* Rx queues 9 and up are for specialized packets,
|
||
|
* such as PTP or DCB control packets, etc. and
|
||
|
* don't require a large fifo
|
||
|
*/
|
||
|
for (i = IEEE_8021QAZ_MAX_TCS; i < queue_count; i++) {
|
||
|
fifo[i] = (XGMAC_FIFO_MIN_ALLOC / XGMAC_FIFO_UNIT) - 1;
|
||
|
fifo_size -= XGMAC_FIFO_MIN_ALLOC;
|
||
|
}
|
||
|
|
||
|
return fifo_size;
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_get_pfc_delay(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int delay;
|
||
|
|
||
|
/* If a delay has been provided, use that */
|
||
|
if (pdata->pfc->delay)
|
||
|
return pdata->pfc->delay / 8;
|
||
|
|
||
|
/* Allow for two maximum size frames */
|
||
|
delay = xgbe_get_max_frame(pdata);
|
||
|
delay += XGMAC_ETH_PREAMBLE;
|
||
|
delay *= 2;
|
||
|
|
||
|
/* Allow for PFC frame */
|
||
|
delay += XGMAC_PFC_DATA_LEN;
|
||
|
delay += ETH_HLEN + ETH_FCS_LEN;
|
||
|
delay += XGMAC_ETH_PREAMBLE;
|
||
|
|
||
|
/* Allow for miscellaneous delays (LPI exit, cable, etc.) */
|
||
|
delay += XGMAC_PFC_DELAYS;
|
||
|
|
||
|
return delay;
|
||
|
}
|
||
|
|
||
|
static unsigned int xgbe_get_pfc_queues(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int count, prio_queues;
|
||
|
unsigned int i;
|
||
|
|
||
|
if (!pdata->pfc->pfc_en)
|
||
|
return 0;
|
||
|
|
||
|
count = 0;
|
||
|
prio_queues = XGMAC_PRIO_QUEUES(pdata->rx_q_count);
|
||
|
for (i = 0; i < prio_queues; i++) {
|
||
|
if (!xgbe_is_pfc_queue(pdata, i))
|
||
|
continue;
|
||
|
|
||
|
pdata->pfcq[i] = 1;
|
||
|
count++;
|
||
|
}
|
||
|
|
||
|
return count;
|
||
|
}
|
||
|
|
||
|
static void xgbe_calculate_dcb_fifo(struct xgbe_prv_data *pdata,
|
||
|
unsigned int fifo_size,
|
||
|
unsigned int *fifo)
|
||
|
{
|
||
|
unsigned int q_fifo_size, rem_fifo, addn_fifo;
|
||
|
unsigned int prio_queues;
|
||
|
unsigned int pfc_count;
|
||
|
unsigned int i;
|
||
|
|
||
|
q_fifo_size = XGMAC_FIFO_ALIGN(xgbe_get_max_frame(pdata));
|
||
|
prio_queues = XGMAC_PRIO_QUEUES(pdata->rx_q_count);
|
||
|
pfc_count = xgbe_get_pfc_queues(pdata);
|
||
|
|
||
|
if (!pfc_count || ((q_fifo_size * prio_queues) > fifo_size)) {
|
||
|
/* No traffic classes with PFC enabled or can't do lossless */
|
||
|
xgbe_calculate_equal_fifo(fifo_size, prio_queues, fifo);
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
/* Calculate how much fifo we have to play with */
|
||
|
rem_fifo = fifo_size - (q_fifo_size * prio_queues);
|
||
|
|
||
|
/* Calculate how much more than base fifo PFC needs, which also
|
||
|
* becomes the threshold activation point (RFA)
|
||
|
*/
|
||
|
pdata->pfc_rfa = xgbe_get_pfc_delay(pdata);
|
||
|
pdata->pfc_rfa = XGMAC_FLOW_CONTROL_ALIGN(pdata->pfc_rfa);
|
||
|
|
||
|
if (pdata->pfc_rfa > q_fifo_size) {
|
||
|
addn_fifo = pdata->pfc_rfa - q_fifo_size;
|
||
|
addn_fifo = XGMAC_FIFO_ALIGN(addn_fifo);
|
||
|
} else {
|
||
|
addn_fifo = 0;
|
||
|
}
|
||
|
|
||
|
/* Calculate DCB fifo settings:
|
||
|
* - distribute remaining fifo between the VLAN priority
|
||
|
* queues based on traffic class PFC enablement and overall
|
||
|
* priority (0 is lowest priority, so start at highest)
|
||
|
*/
|
||
|
i = prio_queues;
|
||
|
while (i > 0) {
|
||
|
i--;
|
||
|
|
||
|
fifo[i] = (q_fifo_size / XGMAC_FIFO_UNIT) - 1;
|
||
|
|
||
|
if (!pdata->pfcq[i] || !addn_fifo)
|
||
|
continue;
|
||
|
|
||
|
if (addn_fifo > rem_fifo) {
|
||
|
netdev_warn(pdata->netdev,
|
||
|
"RXq%u cannot set needed fifo size\n", i);
|
||
|
if (!rem_fifo)
|
||
|
continue;
|
||
|
|
||
|
addn_fifo = rem_fifo;
|
||
|
}
|
||
|
|
||
|
fifo[i] += (addn_fifo / XGMAC_FIFO_UNIT);
|
||
|
rem_fifo -= addn_fifo;
|
||
|
}
|
||
|
|
||
|
if (rem_fifo) {
|
||
|
unsigned int inc_fifo = rem_fifo / prio_queues;
|
||
|
|
||
|
/* Distribute remaining fifo across queues */
|
||
|
for (i = 0; i < prio_queues; i++)
|
||
|
fifo[i] += (inc_fifo / XGMAC_FIFO_UNIT);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_tx_fifo_size(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int fifo_size;
|
||
|
unsigned int fifo[XGBE_MAX_QUEUES];
|
||
|
unsigned int i;
|
||
|
|
||
|
fifo_size = xgbe_get_tx_fifo_size(pdata);
|
||
|
|
||
|
xgbe_calculate_equal_fifo(fifo_size, pdata->tx_q_count, fifo);
|
||
|
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TQS, fifo[i]);
|
||
|
|
||
|
netif_info(pdata, drv, pdata->netdev,
|
||
|
"%d Tx hardware queues, %d byte fifo per queue\n",
|
||
|
pdata->tx_q_count, ((fifo[0] + 1) * XGMAC_FIFO_UNIT));
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_rx_fifo_size(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int fifo_size;
|
||
|
unsigned int fifo[XGBE_MAX_QUEUES];
|
||
|
unsigned int prio_queues;
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Clear any DCB related fifo/queue information */
|
||
|
memset(pdata->pfcq, 0, sizeof(pdata->pfcq));
|
||
|
pdata->pfc_rfa = 0;
|
||
|
|
||
|
fifo_size = xgbe_get_rx_fifo_size(pdata);
|
||
|
prio_queues = XGMAC_PRIO_QUEUES(pdata->rx_q_count);
|
||
|
|
||
|
/* Assign a minimum fifo to the non-VLAN priority queues */
|
||
|
fifo_size = xgbe_set_nonprio_fifos(fifo_size, pdata->rx_q_count, fifo);
|
||
|
|
||
|
if (pdata->pfc && pdata->ets)
|
||
|
xgbe_calculate_dcb_fifo(pdata, fifo_size, fifo);
|
||
|
else
|
||
|
xgbe_calculate_equal_fifo(fifo_size, prio_queues, fifo);
|
||
|
|
||
|
for (i = 0; i < pdata->rx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_RQOMR, RQS, fifo[i]);
|
||
|
|
||
|
xgbe_calculate_flow_control_threshold(pdata, fifo);
|
||
|
xgbe_config_flow_control_threshold(pdata);
|
||
|
|
||
|
if (pdata->pfc && pdata->ets && pdata->pfc->pfc_en) {
|
||
|
netif_info(pdata, drv, pdata->netdev,
|
||
|
"%u Rx hardware queues\n", pdata->rx_q_count);
|
||
|
for (i = 0; i < pdata->rx_q_count; i++)
|
||
|
netif_info(pdata, drv, pdata->netdev,
|
||
|
"RxQ%u, %u byte fifo queue\n", i,
|
||
|
((fifo[i] + 1) * XGMAC_FIFO_UNIT));
|
||
|
} else {
|
||
|
netif_info(pdata, drv, pdata->netdev,
|
||
|
"%u Rx hardware queues, %u byte fifo per queue\n",
|
||
|
pdata->rx_q_count,
|
||
|
((fifo[0] + 1) * XGMAC_FIFO_UNIT));
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_queue_mapping(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int qptc, qptc_extra, queue;
|
||
|
unsigned int prio_queues;
|
||
|
unsigned int ppq, ppq_extra, prio;
|
||
|
unsigned int mask;
|
||
|
unsigned int i, j, reg, reg_val;
|
||
|
|
||
|
/* Map the MTL Tx Queues to Traffic Classes
|
||
|
* Note: Tx Queues >= Traffic Classes
|
||
|
*/
|
||
|
qptc = pdata->tx_q_count / pdata->hw_feat.tc_cnt;
|
||
|
qptc_extra = pdata->tx_q_count % pdata->hw_feat.tc_cnt;
|
||
|
|
||
|
for (i = 0, queue = 0; i < pdata->hw_feat.tc_cnt; i++) {
|
||
|
for (j = 0; j < qptc; j++) {
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"TXq%u mapped to TC%u\n", queue, i);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, queue, MTL_Q_TQOMR,
|
||
|
Q2TCMAP, i);
|
||
|
pdata->q2tc_map[queue++] = i;
|
||
|
}
|
||
|
|
||
|
if (i < qptc_extra) {
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"TXq%u mapped to TC%u\n", queue, i);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, queue, MTL_Q_TQOMR,
|
||
|
Q2TCMAP, i);
|
||
|
pdata->q2tc_map[queue++] = i;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/* Map the 8 VLAN priority values to available MTL Rx queues */
|
||
|
prio_queues = XGMAC_PRIO_QUEUES(pdata->rx_q_count);
|
||
|
ppq = IEEE_8021QAZ_MAX_TCS / prio_queues;
|
||
|
ppq_extra = IEEE_8021QAZ_MAX_TCS % prio_queues;
|
||
|
|
||
|
reg = MAC_RQC2R;
|
||
|
reg_val = 0;
|
||
|
for (i = 0, prio = 0; i < prio_queues;) {
|
||
|
mask = 0;
|
||
|
for (j = 0; j < ppq; j++) {
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"PRIO%u mapped to RXq%u\n", prio, i);
|
||
|
mask |= (1 << prio);
|
||
|
pdata->prio2q_map[prio++] = i;
|
||
|
}
|
||
|
|
||
|
if (i < ppq_extra) {
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"PRIO%u mapped to RXq%u\n", prio, i);
|
||
|
mask |= (1 << prio);
|
||
|
pdata->prio2q_map[prio++] = i;
|
||
|
}
|
||
|
|
||
|
reg_val |= (mask << ((i++ % MAC_RQC2_Q_PER_REG) << 3));
|
||
|
|
||
|
if ((i % MAC_RQC2_Q_PER_REG) && (i != prio_queues))
|
||
|
continue;
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, reg, reg_val);
|
||
|
reg += MAC_RQC2_INC;
|
||
|
reg_val = 0;
|
||
|
}
|
||
|
|
||
|
/* Select dynamic mapping of MTL Rx queue to DMA Rx channel */
|
||
|
reg = MTL_RQDCM0R;
|
||
|
reg_val = 0;
|
||
|
for (i = 0; i < pdata->rx_q_count;) {
|
||
|
reg_val |= (0x80 << ((i++ % MTL_RQDCM_Q_PER_REG) << 3));
|
||
|
|
||
|
if ((i % MTL_RQDCM_Q_PER_REG) && (i != pdata->rx_q_count))
|
||
|
continue;
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, reg, reg_val);
|
||
|
|
||
|
reg += MTL_RQDCM_INC;
|
||
|
reg_val = 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_tc(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int offset, queue, prio;
|
||
|
u8 i;
|
||
|
|
||
|
netdev_reset_tc(pdata->netdev);
|
||
|
if (!pdata->num_tcs)
|
||
|
return;
|
||
|
|
||
|
netdev_set_num_tc(pdata->netdev, pdata->num_tcs);
|
||
|
|
||
|
for (i = 0, queue = 0, offset = 0; i < pdata->num_tcs; i++) {
|
||
|
while ((queue < pdata->tx_q_count) &&
|
||
|
(pdata->q2tc_map[queue] == i))
|
||
|
queue++;
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "TC%u using TXq%u-%u\n",
|
||
|
i, offset, queue - 1);
|
||
|
netdev_set_tc_queue(pdata->netdev, i, queue - offset, offset);
|
||
|
offset = queue;
|
||
|
}
|
||
|
|
||
|
if (!pdata->ets)
|
||
|
return;
|
||
|
|
||
|
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++)
|
||
|
netdev_set_prio_tc_map(pdata->netdev, prio,
|
||
|
pdata->ets->prio_tc[prio]);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_dcb_tc(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct ieee_ets *ets = pdata->ets;
|
||
|
unsigned int total_weight, min_weight, weight;
|
||
|
unsigned int mask, reg, reg_val;
|
||
|
unsigned int i, prio;
|
||
|
|
||
|
if (!ets)
|
||
|
return;
|
||
|
|
||
|
/* Set Tx to deficit weighted round robin scheduling algorithm (when
|
||
|
* traffic class is using ETS algorithm)
|
||
|
*/
|
||
|
XGMAC_IOWRITE_BITS(pdata, MTL_OMR, ETSALG, MTL_ETSALG_DWRR);
|
||
|
|
||
|
/* Set Traffic Class algorithms */
|
||
|
total_weight = pdata->netdev->mtu * pdata->hw_feat.tc_cnt;
|
||
|
min_weight = total_weight / 100;
|
||
|
if (!min_weight)
|
||
|
min_weight = 1;
|
||
|
|
||
|
for (i = 0; i < pdata->hw_feat.tc_cnt; i++) {
|
||
|
/* Map the priorities to the traffic class */
|
||
|
mask = 0;
|
||
|
for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; prio++) {
|
||
|
if (ets->prio_tc[prio] == i)
|
||
|
mask |= (1 << prio);
|
||
|
}
|
||
|
mask &= 0xff;
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev, "TC%u PRIO mask=%#x\n",
|
||
|
i, mask);
|
||
|
reg = MTL_TCPM0R + (MTL_TCPM_INC * (i / MTL_TCPM_TC_PER_REG));
|
||
|
reg_val = XGMAC_IOREAD(pdata, reg);
|
||
|
|
||
|
reg_val &= ~(0xff << ((i % MTL_TCPM_TC_PER_REG) << 3));
|
||
|
reg_val |= (mask << ((i % MTL_TCPM_TC_PER_REG) << 3));
|
||
|
|
||
|
XGMAC_IOWRITE(pdata, reg, reg_val);
|
||
|
|
||
|
/* Set the traffic class algorithm */
|
||
|
switch (ets->tc_tsa[i]) {
|
||
|
case IEEE_8021QAZ_TSA_STRICT:
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"TC%u using SP\n", i);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
|
||
|
MTL_TSA_SP);
|
||
|
break;
|
||
|
case IEEE_8021QAZ_TSA_ETS:
|
||
|
weight = total_weight * ets->tc_tx_bw[i] / 100;
|
||
|
weight = clamp(weight, min_weight, total_weight);
|
||
|
|
||
|
netif_dbg(pdata, drv, pdata->netdev,
|
||
|
"TC%u using DWRR (weight %u)\n", i, weight);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_ETSCR, TSA,
|
||
|
MTL_TSA_ETS);
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_TC_QWR, QW,
|
||
|
weight);
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
xgbe_config_tc(pdata);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_dcb_pfc(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (!test_bit(XGBE_DOWN, &pdata->dev_state)) {
|
||
|
/* Just stop the Tx queues while Rx fifo is changed */
|
||
|
netif_tx_stop_all_queues(pdata->netdev);
|
||
|
|
||
|
/* Suspend Rx so that fifo's can be adjusted */
|
||
|
pdata->hw_if.disable_rx(pdata);
|
||
|
}
|
||
|
|
||
|
xgbe_config_rx_fifo_size(pdata);
|
||
|
xgbe_config_flow_control(pdata);
|
||
|
|
||
|
if (!test_bit(XGBE_DOWN, &pdata->dev_state)) {
|
||
|
/* Resume Rx */
|
||
|
pdata->hw_if.enable_rx(pdata);
|
||
|
|
||
|
/* Resume Tx queues */
|
||
|
netif_tx_start_all_queues(pdata->netdev);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_mac_address(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
xgbe_set_mac_address(pdata, pdata->netdev->dev_addr);
|
||
|
|
||
|
/* Filtering is done using perfect filtering and hash filtering */
|
||
|
if (pdata->hw_feat.hash_table_size) {
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HPF, 1);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HUC, 1);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_PFR, HMC, 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_jumbo_enable(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int val;
|
||
|
|
||
|
val = (pdata->netdev->mtu > XGMAC_STD_PACKET_MTU) ? 1 : 0;
|
||
|
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, JE, val);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_mac_speed(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
xgbe_set_speed(pdata, pdata->phy_speed);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_checksum_offload(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
if (pdata->netdev->features & NETIF_F_RXCSUM)
|
||
|
xgbe_enable_rx_csum(pdata);
|
||
|
else
|
||
|
xgbe_disable_rx_csum(pdata);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_vlan_support(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Indicate that VLAN Tx CTAGs come from context descriptors */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANIR, CSVL, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_VLANIR, VLTI, 1);
|
||
|
|
||
|
/* Set the current VLAN Hash Table register value */
|
||
|
xgbe_update_vlan_hash_table(pdata);
|
||
|
|
||
|
if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)
|
||
|
xgbe_enable_rx_vlan_filtering(pdata);
|
||
|
else
|
||
|
xgbe_disable_rx_vlan_filtering(pdata);
|
||
|
|
||
|
if (pdata->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
|
||
|
xgbe_enable_rx_vlan_stripping(pdata);
|
||
|
else
|
||
|
xgbe_disable_rx_vlan_stripping(pdata);
|
||
|
}
|
||
|
|
||
|
static u64 xgbe_mmc_read(struct xgbe_prv_data *pdata, unsigned int reg_lo)
|
||
|
{
|
||
|
bool read_hi;
|
||
|
u64 val;
|
||
|
|
||
|
if (pdata->vdata->mmc_64bit) {
|
||
|
switch (reg_lo) {
|
||
|
/* These registers are always 32 bit */
|
||
|
case MMC_RXRUNTERROR:
|
||
|
case MMC_RXJABBERERROR:
|
||
|
case MMC_RXUNDERSIZE_G:
|
||
|
case MMC_RXOVERSIZE_G:
|
||
|
case MMC_RXWATCHDOGERROR:
|
||
|
read_hi = false;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
read_hi = true;
|
||
|
}
|
||
|
} else {
|
||
|
switch (reg_lo) {
|
||
|
/* These registers are always 64 bit */
|
||
|
case MMC_TXOCTETCOUNT_GB_LO:
|
||
|
case MMC_TXOCTETCOUNT_G_LO:
|
||
|
case MMC_RXOCTETCOUNT_GB_LO:
|
||
|
case MMC_RXOCTETCOUNT_G_LO:
|
||
|
read_hi = true;
|
||
|
break;
|
||
|
|
||
|
default:
|
||
|
read_hi = false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
val = XGMAC_IOREAD(pdata, reg_lo);
|
||
|
|
||
|
if (read_hi)
|
||
|
val |= ((u64)XGMAC_IOREAD(pdata, reg_lo + 4) << 32);
|
||
|
|
||
|
return val;
|
||
|
}
|
||
|
|
||
|
static void xgbe_tx_mmc_int(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
|
||
|
unsigned int mmc_isr = XGMAC_IOREAD(pdata, MMC_TISR);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXOCTETCOUNT_GB))
|
||
|
stats->txoctetcount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXFRAMECOUNT_GB))
|
||
|
stats->txframecount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXBROADCASTFRAMES_G))
|
||
|
stats->txbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXMULTICASTFRAMES_G))
|
||
|
stats->txmulticastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX64OCTETS_GB))
|
||
|
stats->tx64octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX64OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX65TO127OCTETS_GB))
|
||
|
stats->tx65to127octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX65TO127OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX128TO255OCTETS_GB))
|
||
|
stats->tx128to255octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX128TO255OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX256TO511OCTETS_GB))
|
||
|
stats->tx256to511octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX256TO511OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX512TO1023OCTETS_GB))
|
||
|
stats->tx512to1023octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX512TO1023OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TX1024TOMAXOCTETS_GB))
|
||
|
stats->tx1024tomaxoctets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX1024TOMAXOCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXUNICASTFRAMES_GB))
|
||
|
stats->txunicastframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXUNICASTFRAMES_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXMULTICASTFRAMES_GB))
|
||
|
stats->txmulticastframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXBROADCASTFRAMES_GB))
|
||
|
stats->txbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXUNDERFLOWERROR))
|
||
|
stats->txunderflowerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXUNDERFLOWERROR_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXOCTETCOUNT_G))
|
||
|
stats->txoctetcount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXFRAMECOUNT_G))
|
||
|
stats->txframecount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXPAUSEFRAMES))
|
||
|
stats->txpauseframes +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXPAUSEFRAMES_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_TISR, TXVLANFRAMES_G))
|
||
|
stats->txvlanframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXVLANFRAMES_G_LO);
|
||
|
}
|
||
|
|
||
|
static void xgbe_rx_mmc_int(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
|
||
|
unsigned int mmc_isr = XGMAC_IOREAD(pdata, MMC_RISR);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXFRAMECOUNT_GB))
|
||
|
stats->rxframecount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXFRAMECOUNT_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOCTETCOUNT_GB))
|
||
|
stats->rxoctetcount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOCTETCOUNT_G))
|
||
|
stats->rxoctetcount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXBROADCASTFRAMES_G))
|
||
|
stats->rxbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXBROADCASTFRAMES_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXMULTICASTFRAMES_G))
|
||
|
stats->rxmulticastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXMULTICASTFRAMES_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXCRCERROR))
|
||
|
stats->rxcrcerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXCRCERROR_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXRUNTERROR))
|
||
|
stats->rxrunterror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXRUNTERROR);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXJABBERERROR))
|
||
|
stats->rxjabbererror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXJABBERERROR);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXUNDERSIZE_G))
|
||
|
stats->rxundersize_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXUNDERSIZE_G);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOVERSIZE_G))
|
||
|
stats->rxoversize_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOVERSIZE_G);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX64OCTETS_GB))
|
||
|
stats->rx64octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX64OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX65TO127OCTETS_GB))
|
||
|
stats->rx65to127octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX65TO127OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX128TO255OCTETS_GB))
|
||
|
stats->rx128to255octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX128TO255OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX256TO511OCTETS_GB))
|
||
|
stats->rx256to511octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX256TO511OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX512TO1023OCTETS_GB))
|
||
|
stats->rx512to1023octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX512TO1023OCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RX1024TOMAXOCTETS_GB))
|
||
|
stats->rx1024tomaxoctets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX1024TOMAXOCTETS_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXUNICASTFRAMES_G))
|
||
|
stats->rxunicastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXUNICASTFRAMES_G_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXLENGTHERROR))
|
||
|
stats->rxlengtherror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXLENGTHERROR_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXOUTOFRANGETYPE))
|
||
|
stats->rxoutofrangetype +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOUTOFRANGETYPE_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXPAUSEFRAMES))
|
||
|
stats->rxpauseframes +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXPAUSEFRAMES_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXFIFOOVERFLOW))
|
||
|
stats->rxfifooverflow +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXFIFOOVERFLOW_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXVLANFRAMES_GB))
|
||
|
stats->rxvlanframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXVLANFRAMES_GB_LO);
|
||
|
|
||
|
if (XGMAC_GET_BITS(mmc_isr, MMC_RISR, RXWATCHDOGERROR))
|
||
|
stats->rxwatchdogerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXWATCHDOGERROR);
|
||
|
}
|
||
|
|
||
|
static void xgbe_read_mmc_stats(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct xgbe_mmc_stats *stats = &pdata->mmc_stats;
|
||
|
|
||
|
/* Freeze counters */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_CR, MCF, 1);
|
||
|
|
||
|
stats->txoctetcount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_GB_LO);
|
||
|
|
||
|
stats->txframecount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_GB_LO);
|
||
|
|
||
|
stats->txbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_G_LO);
|
||
|
|
||
|
stats->txmulticastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_G_LO);
|
||
|
|
||
|
stats->tx64octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX64OCTETS_GB_LO);
|
||
|
|
||
|
stats->tx65to127octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX65TO127OCTETS_GB_LO);
|
||
|
|
||
|
stats->tx128to255octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX128TO255OCTETS_GB_LO);
|
||
|
|
||
|
stats->tx256to511octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX256TO511OCTETS_GB_LO);
|
||
|
|
||
|
stats->tx512to1023octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX512TO1023OCTETS_GB_LO);
|
||
|
|
||
|
stats->tx1024tomaxoctets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TX1024TOMAXOCTETS_GB_LO);
|
||
|
|
||
|
stats->txunicastframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXUNICASTFRAMES_GB_LO);
|
||
|
|
||
|
stats->txmulticastframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXMULTICASTFRAMES_GB_LO);
|
||
|
|
||
|
stats->txbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXBROADCASTFRAMES_GB_LO);
|
||
|
|
||
|
stats->txunderflowerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXUNDERFLOWERROR_LO);
|
||
|
|
||
|
stats->txoctetcount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXOCTETCOUNT_G_LO);
|
||
|
|
||
|
stats->txframecount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXFRAMECOUNT_G_LO);
|
||
|
|
||
|
stats->txpauseframes +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXPAUSEFRAMES_LO);
|
||
|
|
||
|
stats->txvlanframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_TXVLANFRAMES_G_LO);
|
||
|
|
||
|
stats->rxframecount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXFRAMECOUNT_GB_LO);
|
||
|
|
||
|
stats->rxoctetcount_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_GB_LO);
|
||
|
|
||
|
stats->rxoctetcount_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOCTETCOUNT_G_LO);
|
||
|
|
||
|
stats->rxbroadcastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXBROADCASTFRAMES_G_LO);
|
||
|
|
||
|
stats->rxmulticastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXMULTICASTFRAMES_G_LO);
|
||
|
|
||
|
stats->rxcrcerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXCRCERROR_LO);
|
||
|
|
||
|
stats->rxrunterror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXRUNTERROR);
|
||
|
|
||
|
stats->rxjabbererror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXJABBERERROR);
|
||
|
|
||
|
stats->rxundersize_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXUNDERSIZE_G);
|
||
|
|
||
|
stats->rxoversize_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOVERSIZE_G);
|
||
|
|
||
|
stats->rx64octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX64OCTETS_GB_LO);
|
||
|
|
||
|
stats->rx65to127octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX65TO127OCTETS_GB_LO);
|
||
|
|
||
|
stats->rx128to255octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX128TO255OCTETS_GB_LO);
|
||
|
|
||
|
stats->rx256to511octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX256TO511OCTETS_GB_LO);
|
||
|
|
||
|
stats->rx512to1023octets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX512TO1023OCTETS_GB_LO);
|
||
|
|
||
|
stats->rx1024tomaxoctets_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RX1024TOMAXOCTETS_GB_LO);
|
||
|
|
||
|
stats->rxunicastframes_g +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXUNICASTFRAMES_G_LO);
|
||
|
|
||
|
stats->rxlengtherror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXLENGTHERROR_LO);
|
||
|
|
||
|
stats->rxoutofrangetype +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXOUTOFRANGETYPE_LO);
|
||
|
|
||
|
stats->rxpauseframes +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXPAUSEFRAMES_LO);
|
||
|
|
||
|
stats->rxfifooverflow +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXFIFOOVERFLOW_LO);
|
||
|
|
||
|
stats->rxvlanframes_gb +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXVLANFRAMES_GB_LO);
|
||
|
|
||
|
stats->rxwatchdogerror +=
|
||
|
xgbe_mmc_read(pdata, MMC_RXWATCHDOGERROR);
|
||
|
|
||
|
/* Un-freeze counters */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_CR, MCF, 0);
|
||
|
}
|
||
|
|
||
|
static void xgbe_config_mmc(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
/* Set counters to reset on read */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_CR, ROR, 1);
|
||
|
|
||
|
/* Reset the counters */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MMC_CR, CR, 1);
|
||
|
}
|
||
|
|
||
|
static void xgbe_txq_prepare_tx_stop(struct xgbe_prv_data *pdata,
|
||
|
unsigned int queue)
|
||
|
{
|
||
|
unsigned int tx_status;
|
||
|
unsigned long tx_timeout;
|
||
|
|
||
|
/* The Tx engine cannot be stopped if it is actively processing
|
||
|
* packets. Wait for the Tx queue to empty the Tx fifo. Don't
|
||
|
* wait forever though...
|
||
|
*/
|
||
|
tx_timeout = jiffies + (XGBE_DMA_STOP_TIMEOUT * HZ);
|
||
|
while (time_before(jiffies, tx_timeout)) {
|
||
|
tx_status = XGMAC_MTL_IOREAD(pdata, queue, MTL_Q_TQDR);
|
||
|
if ((XGMAC_GET_BITS(tx_status, MTL_Q_TQDR, TRCSTS) != 1) &&
|
||
|
(XGMAC_GET_BITS(tx_status, MTL_Q_TQDR, TXQSTS) == 0))
|
||
|
break;
|
||
|
|
||
|
usleep_range(500, 1000);
|
||
|
}
|
||
|
|
||
|
if (!time_before(jiffies, tx_timeout))
|
||
|
netdev_info(pdata->netdev,
|
||
|
"timed out waiting for Tx queue %u to empty\n",
|
||
|
queue);
|
||
|
}
|
||
|
|
||
|
static void xgbe_prepare_tx_stop(struct xgbe_prv_data *pdata,
|
||
|
unsigned int queue)
|
||
|
{
|
||
|
unsigned int tx_dsr, tx_pos, tx_qidx;
|
||
|
unsigned int tx_status;
|
||
|
unsigned long tx_timeout;
|
||
|
|
||
|
if (XGMAC_GET_BITS(pdata->hw_feat.version, MAC_VR, SNPSVER) > 0x20)
|
||
|
return xgbe_txq_prepare_tx_stop(pdata, queue);
|
||
|
|
||
|
/* Calculate the status register to read and the position within */
|
||
|
if (queue < DMA_DSRX_FIRST_QUEUE) {
|
||
|
tx_dsr = DMA_DSR0;
|
||
|
tx_pos = (queue * DMA_DSR_Q_WIDTH) + DMA_DSR0_TPS_START;
|
||
|
} else {
|
||
|
tx_qidx = queue - DMA_DSRX_FIRST_QUEUE;
|
||
|
|
||
|
tx_dsr = DMA_DSR1 + ((tx_qidx / DMA_DSRX_QPR) * DMA_DSRX_INC);
|
||
|
tx_pos = ((tx_qidx % DMA_DSRX_QPR) * DMA_DSR_Q_WIDTH) +
|
||
|
DMA_DSRX_TPS_START;
|
||
|
}
|
||
|
|
||
|
/* The Tx engine cannot be stopped if it is actively processing
|
||
|
* descriptors. Wait for the Tx engine to enter the stopped or
|
||
|
* suspended state. Don't wait forever though...
|
||
|
*/
|
||
|
tx_timeout = jiffies + (XGBE_DMA_STOP_TIMEOUT * HZ);
|
||
|
while (time_before(jiffies, tx_timeout)) {
|
||
|
tx_status = XGMAC_IOREAD(pdata, tx_dsr);
|
||
|
tx_status = GET_BITS(tx_status, tx_pos, DMA_DSR_TPS_WIDTH);
|
||
|
if ((tx_status == DMA_TPS_STOPPED) ||
|
||
|
(tx_status == DMA_TPS_SUSPENDED))
|
||
|
break;
|
||
|
|
||
|
usleep_range(500, 1000);
|
||
|
}
|
||
|
|
||
|
if (!time_before(jiffies, tx_timeout))
|
||
|
netdev_info(pdata->netdev,
|
||
|
"timed out waiting for Tx DMA channel %u to stop\n",
|
||
|
queue);
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_tx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Enable each Tx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->tx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, ST, 1);
|
||
|
}
|
||
|
|
||
|
/* Enable each Tx queue */
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN,
|
||
|
MTL_Q_ENABLED);
|
||
|
|
||
|
/* Enable MAC Tx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 1);
|
||
|
}
|
||
|
|
||
|
static void xgbe_disable_tx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Prepare for Tx DMA channel stop */
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
xgbe_prepare_tx_stop(pdata, i);
|
||
|
|
||
|
/* Disable MAC Tx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 0);
|
||
|
|
||
|
/* Disable each Tx queue */
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
XGMAC_MTL_IOWRITE_BITS(pdata, i, MTL_Q_TQOMR, TXQEN, 0);
|
||
|
|
||
|
/* Disable each Tx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->tx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, ST, 0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_prepare_rx_stop(struct xgbe_prv_data *pdata,
|
||
|
unsigned int queue)
|
||
|
{
|
||
|
unsigned int rx_status;
|
||
|
unsigned long rx_timeout;
|
||
|
|
||
|
/* The Rx engine cannot be stopped if it is actively processing
|
||
|
* packets. Wait for the Rx queue to empty the Rx fifo. Don't
|
||
|
* wait forever though...
|
||
|
*/
|
||
|
rx_timeout = jiffies + (XGBE_DMA_STOP_TIMEOUT * HZ);
|
||
|
while (time_before(jiffies, rx_timeout)) {
|
||
|
rx_status = XGMAC_MTL_IOREAD(pdata, queue, MTL_Q_RQDR);
|
||
|
if ((XGMAC_GET_BITS(rx_status, MTL_Q_RQDR, PRXQ) == 0) &&
|
||
|
(XGMAC_GET_BITS(rx_status, MTL_Q_RQDR, RXQSTS) == 0))
|
||
|
break;
|
||
|
|
||
|
usleep_range(500, 1000);
|
||
|
}
|
||
|
|
||
|
if (!time_before(jiffies, rx_timeout))
|
||
|
netdev_info(pdata->netdev,
|
||
|
"timed out waiting for Rx queue %u to empty\n",
|
||
|
queue);
|
||
|
}
|
||
|
|
||
|
static void xgbe_enable_rx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int reg_val, i;
|
||
|
|
||
|
/* Enable each Rx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR, SR, 1);
|
||
|
}
|
||
|
|
||
|
/* Enable each Rx queue */
|
||
|
reg_val = 0;
|
||
|
for (i = 0; i < pdata->rx_q_count; i++)
|
||
|
reg_val |= (0x02 << (i << 1));
|
||
|
XGMAC_IOWRITE(pdata, MAC_RQC0R, reg_val);
|
||
|
|
||
|
/* Enable MAC Rx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 1);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 1);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 1);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 1);
|
||
|
}
|
||
|
|
||
|
static void xgbe_disable_rx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Disable MAC Rx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, DCRCC, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, CST, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, ACS, 0);
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_RCR, RE, 0);
|
||
|
|
||
|
/* Prepare for Rx DMA channel stop */
|
||
|
for (i = 0; i < pdata->rx_q_count; i++)
|
||
|
xgbe_prepare_rx_stop(pdata, i);
|
||
|
|
||
|
/* Disable each Rx queue */
|
||
|
XGMAC_IOWRITE(pdata, MAC_RQC0R, 0);
|
||
|
|
||
|
/* Disable each Rx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR, SR, 0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_powerup_tx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Enable each Tx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->tx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, ST, 1);
|
||
|
}
|
||
|
|
||
|
/* Enable MAC Tx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 1);
|
||
|
}
|
||
|
|
||
|
static void xgbe_powerdown_tx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Prepare for Tx DMA channel stop */
|
||
|
for (i = 0; i < pdata->tx_q_count; i++)
|
||
|
xgbe_prepare_tx_stop(pdata, i);
|
||
|
|
||
|
/* Disable MAC Tx */
|
||
|
XGMAC_IOWRITE_BITS(pdata, MAC_TCR, TE, 0);
|
||
|
|
||
|
/* Disable each Tx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->tx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_TCR, ST, 0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_powerup_rx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Enable each Rx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR, SR, 1);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void xgbe_powerdown_rx(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
unsigned int i;
|
||
|
|
||
|
/* Disable each Rx DMA channel */
|
||
|
for (i = 0; i < pdata->channel_count; i++) {
|
||
|
if (!pdata->channel[i]->rx_ring)
|
||
|
break;
|
||
|
|
||
|
XGMAC_DMA_IOWRITE_BITS(pdata->channel[i], DMA_CH_RCR, SR, 0);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int xgbe_init(struct xgbe_prv_data *pdata)
|
||
|
{
|
||
|
struct xgbe_desc_if *desc_if = &pdata->desc_if;
|
||
|
int ret;
|
||
|
|
||
|
DBGPR("-->xgbe_init\n");
|
||
|
|
||
|
/* Flush Tx queues */
|
||
|
ret = xgbe_flush_tx_queues(pdata);
|
||
|
if (ret) {
|
||
|
netdev_err(pdata->netdev, "error flushing TX queues\n");
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Initialize DMA related features
|
||
|
*/
|
||
|
xgbe_config_dma_bus(pdata);
|
||
|
xgbe_config_dma_cache(pdata);
|
||
|
xgbe_config_osp_mode(pdata);
|
||
|
xgbe_config_pbl_val(pdata);
|
||
|
xgbe_config_rx_coalesce(pdata);
|
||
|
xgbe_config_tx_coalesce(pdata);
|
||
|
xgbe_config_rx_buffer_size(pdata);
|
||
|
xgbe_config_tso_mode(pdata);
|
||
|
xgbe_config_sph_mode(pdata);
|
||
|
xgbe_config_rss(pdata);
|
||
|
desc_if->wrapper_tx_desc_init(pdata);
|
||
|
desc_if->wrapper_rx_desc_init(pdata);
|
||
|
xgbe_enable_dma_interrupts(pdata);
|
||
|
|
||
|
/*
|
||
|
* Initialize MTL related features
|
||
|
*/
|
||
|
xgbe_config_mtl_mode(pdata);
|
||
|
xgbe_config_queue_mapping(pdata);
|
||
|
xgbe_config_tsf_mode(pdata, pdata->tx_sf_mode);
|
||
|
xgbe_config_rsf_mode(pdata, pdata->rx_sf_mode);
|
||
|
xgbe_config_tx_threshold(pdata, pdata->tx_threshold);
|
||
|
xgbe_config_rx_threshold(pdata, pdata->rx_threshold);
|
||
|
xgbe_config_tx_fifo_size(pdata);
|
||
|
xgbe_config_rx_fifo_size(pdata);
|
||
|
/*TODO: Error Packet and undersized good Packet forwarding enable
|
||
|
(FEP and FUP)
|
||
|
*/
|
||
|
xgbe_config_dcb_tc(pdata);
|
||
|
xgbe_enable_mtl_interrupts(pdata);
|
||
|
|
||
|
/*
|
||
|
* Initialize MAC related features
|
||
|
*/
|
||
|
xgbe_config_mac_address(pdata);
|
||
|
xgbe_config_rx_mode(pdata);
|
||
|
xgbe_config_jumbo_enable(pdata);
|
||
|
xgbe_config_flow_control(pdata);
|
||
|
xgbe_config_mac_speed(pdata);
|
||
|
xgbe_config_checksum_offload(pdata);
|
||
|
xgbe_config_vlan_support(pdata);
|
||
|
xgbe_config_mmc(pdata);
|
||
|
xgbe_enable_mac_interrupts(pdata);
|
||
|
|
||
|
/*
|
||
|
* Initialize ECC related features
|
||
|
*/
|
||
|
xgbe_enable_ecc_interrupts(pdata);
|
||
|
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||
|
DBGPR("<--xgbe_init\n");
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||
|
|
||
|
return 0;
|
||
|
}
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||
|
|
||
|
void xgbe_init_function_ptrs_dev(struct xgbe_hw_if *hw_if)
|
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|
{
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|
DBGPR("-->xgbe_init_function_ptrs\n");
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|
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|
hw_if->tx_complete = xgbe_tx_complete;
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||
|
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||
|
hw_if->set_mac_address = xgbe_set_mac_address;
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||
|
hw_if->config_rx_mode = xgbe_config_rx_mode;
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||
|
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||
|
hw_if->enable_rx_csum = xgbe_enable_rx_csum;
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||
|
hw_if->disable_rx_csum = xgbe_disable_rx_csum;
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||
|
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||
|
hw_if->enable_rx_vlan_stripping = xgbe_enable_rx_vlan_stripping;
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||
|
hw_if->disable_rx_vlan_stripping = xgbe_disable_rx_vlan_stripping;
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||
|
hw_if->enable_rx_vlan_filtering = xgbe_enable_rx_vlan_filtering;
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||
|
hw_if->disable_rx_vlan_filtering = xgbe_disable_rx_vlan_filtering;
|
||
|
hw_if->update_vlan_hash_table = xgbe_update_vlan_hash_table;
|
||
|
|
||
|
hw_if->read_mmd_regs = xgbe_read_mmd_regs;
|
||
|
hw_if->write_mmd_regs = xgbe_write_mmd_regs;
|
||
|
|
||
|
hw_if->set_speed = xgbe_set_speed;
|
||
|
|
||
|
hw_if->set_ext_mii_mode = xgbe_set_ext_mii_mode;
|
||
|
hw_if->read_ext_mii_regs = xgbe_read_ext_mii_regs;
|
||
|
hw_if->write_ext_mii_regs = xgbe_write_ext_mii_regs;
|
||
|
|
||
|
hw_if->set_gpio = xgbe_set_gpio;
|
||
|
hw_if->clr_gpio = xgbe_clr_gpio;
|
||
|
|
||
|
hw_if->enable_tx = xgbe_enable_tx;
|
||
|
hw_if->disable_tx = xgbe_disable_tx;
|
||
|
hw_if->enable_rx = xgbe_enable_rx;
|
||
|
hw_if->disable_rx = xgbe_disable_rx;
|
||
|
|
||
|
hw_if->powerup_tx = xgbe_powerup_tx;
|
||
|
hw_if->powerdown_tx = xgbe_powerdown_tx;
|
||
|
hw_if->powerup_rx = xgbe_powerup_rx;
|
||
|
hw_if->powerdown_rx = xgbe_powerdown_rx;
|
||
|
|
||
|
hw_if->dev_xmit = xgbe_dev_xmit;
|
||
|
hw_if->dev_read = xgbe_dev_read;
|
||
|
hw_if->enable_int = xgbe_enable_int;
|
||
|
hw_if->disable_int = xgbe_disable_int;
|
||
|
hw_if->init = xgbe_init;
|
||
|
hw_if->exit = xgbe_exit;
|
||
|
|
||
|
/* Descriptor related Sequences have to be initialized here */
|
||
|
hw_if->tx_desc_init = xgbe_tx_desc_init;
|
||
|
hw_if->rx_desc_init = xgbe_rx_desc_init;
|
||
|
hw_if->tx_desc_reset = xgbe_tx_desc_reset;
|
||
|
hw_if->rx_desc_reset = xgbe_rx_desc_reset;
|
||
|
hw_if->is_last_desc = xgbe_is_last_desc;
|
||
|
hw_if->is_context_desc = xgbe_is_context_desc;
|
||
|
hw_if->tx_start_xmit = xgbe_tx_start_xmit;
|
||
|
|
||
|
/* For FLOW ctrl */
|
||
|
hw_if->config_tx_flow_control = xgbe_config_tx_flow_control;
|
||
|
hw_if->config_rx_flow_control = xgbe_config_rx_flow_control;
|
||
|
|
||
|
/* For RX coalescing */
|
||
|
hw_if->config_rx_coalesce = xgbe_config_rx_coalesce;
|
||
|
hw_if->config_tx_coalesce = xgbe_config_tx_coalesce;
|
||
|
hw_if->usec_to_riwt = xgbe_usec_to_riwt;
|
||
|
hw_if->riwt_to_usec = xgbe_riwt_to_usec;
|
||
|
|
||
|
/* For RX and TX threshold config */
|
||
|
hw_if->config_rx_threshold = xgbe_config_rx_threshold;
|
||
|
hw_if->config_tx_threshold = xgbe_config_tx_threshold;
|
||
|
|
||
|
/* For RX and TX Store and Forward Mode config */
|
||
|
hw_if->config_rsf_mode = xgbe_config_rsf_mode;
|
||
|
hw_if->config_tsf_mode = xgbe_config_tsf_mode;
|
||
|
|
||
|
/* For TX DMA Operating on Second Frame config */
|
||
|
hw_if->config_osp_mode = xgbe_config_osp_mode;
|
||
|
|
||
|
/* For MMC statistics support */
|
||
|
hw_if->tx_mmc_int = xgbe_tx_mmc_int;
|
||
|
hw_if->rx_mmc_int = xgbe_rx_mmc_int;
|
||
|
hw_if->read_mmc_stats = xgbe_read_mmc_stats;
|
||
|
|
||
|
/* For PTP config */
|
||
|
hw_if->config_tstamp = xgbe_config_tstamp;
|
||
|
hw_if->update_tstamp_addend = xgbe_update_tstamp_addend;
|
||
|
hw_if->set_tstamp_time = xgbe_set_tstamp_time;
|
||
|
hw_if->get_tstamp_time = xgbe_get_tstamp_time;
|
||
|
hw_if->get_tx_tstamp = xgbe_get_tx_tstamp;
|
||
|
|
||
|
/* For Data Center Bridging config */
|
||
|
hw_if->config_tc = xgbe_config_tc;
|
||
|
hw_if->config_dcb_tc = xgbe_config_dcb_tc;
|
||
|
hw_if->config_dcb_pfc = xgbe_config_dcb_pfc;
|
||
|
|
||
|
/* For Receive Side Scaling */
|
||
|
hw_if->enable_rss = xgbe_enable_rss;
|
||
|
hw_if->disable_rss = xgbe_disable_rss;
|
||
|
hw_if->set_rss_hash_key = xgbe_set_rss_hash_key;
|
||
|
hw_if->set_rss_lookup_table = xgbe_set_rss_lookup_table;
|
||
|
|
||
|
/* For ECC */
|
||
|
hw_if->disable_ecc_ded = xgbe_disable_ecc_ded;
|
||
|
hw_if->disable_ecc_sec = xgbe_disable_ecc_sec;
|
||
|
|
||
|
/* For VXLAN */
|
||
|
hw_if->enable_vxlan = xgbe_enable_vxlan;
|
||
|
hw_if->disable_vxlan = xgbe_disable_vxlan;
|
||
|
hw_if->set_vxlan_id = xgbe_set_vxlan_id;
|
||
|
|
||
|
DBGPR("<--xgbe_init_function_ptrs\n");
|
||
|
}
|