FreeBSD/Linux Kernel Cross Reference
sys/dev/axgbe/xgbe-desc.c

     /*
      * AMD 10Gb Ethernet driver
      *
      * Copyright (c) 2014-2016,2020 Advanced Micro Devices, Inc.
      *
      * This file is available to you under your choice of the following two
      * licenses:
      *
      * License 1: GPLv2
     *
     * This file is free software; you may copy, redistribute and/or modify
     * it under the terms of the GNU General Public License as published by
     * the Free Software Foundation, either version 2 of the License, or (at
     * your option) any later version.
     *
     * This file is distributed in the hope that it will be useful, but
     * WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
     * General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program.  If not, see <http://www.gnu.org/licenses/>.
     *
     * This file incorporates work covered by the following copyright and
     * permission notice:
     *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
     *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
     *     Inc. unless otherwise expressly agreed to in writing between Synopsys
     *     and you.
     *
     *     The Software IS NOT an item of Licensed Software or Licensed Product
     *     under any End User Software License Agreement or Agreement for Licensed
     *     Product with Synopsys or any supplement thereto.  Permission is hereby
     *     granted, free of charge, to any person obtaining a copy of this software
     *     annotated with this license and the Software, to deal in the Software
     *     without restriction, including without limitation the rights to use,
     *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     *     of the Software, and to permit persons to whom the Software is furnished
     *     to do so, subject to the following conditions:
     *
     *     The above copyright notice and this permission notice shall be included
     *     in all copies or substantial portions of the Software.
     *
     *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
     *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
     *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
     *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     *     THE POSSIBILITY OF SUCH DAMAGE.
     *
     *
     * License 2: Modified BSD
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions are met:
     *     * Redistributions of source code must retain the above copyright
     *       notice, this list of conditions and the following disclaimer.
     *     * Redistributions in binary form must reproduce the above copyright
     *       notice, this list of conditions and the following disclaimer in the
     *       documentation and/or other materials provided with the distribution.
     *     * Neither the name of Advanced Micro Devices, Inc. nor the
     *       names of its contributors may be used to endorse or promote products
     *       derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
     * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
     * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * This file incorporates work covered by the following copyright and
     * permission notice:
     *     The Synopsys DWC ETHER XGMAC Software Driver and documentation
     *     (hereinafter "Software") is an unsupported proprietary work of Synopsys,
     *     Inc. unless otherwise expressly agreed to in writing between Synopsys
     *     and you.
     *
     *     The Software IS NOT an item of Licensed Software or Licensed Product
     *     under any End User Software License Agreement or Agreement for Licensed
     *     Product with Synopsys or any supplement thereto.  Permission is hereby
     *     granted, free of charge, to any person obtaining a copy of this software
     *     annotated with this license and the Software, to deal in the Software
     *     without restriction, including without limitation the rights to use,
     *     copy, modify, merge, publish, distribute, sublicense, and/or sell copies
     *     of the Software, and to permit persons to whom the Software is furnished
     *     to do so, subject to the following conditions:
     *
     *     The above copyright notice and this permission notice shall be included
     *     in all copies or substantial portions of the Software.
    *
    *     THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
    *     BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
    *     TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
    *     PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
    *     BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    *     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    *     SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    *     INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    *     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
    *     THE POSSIBILITY OF SUCH DAMAGE.
    */
   
   #include <sys/cdefs.h>
   __FBSDID("$FreeBSD$");
   
   #include "xgbe.h"
   #include "xgbe-common.h"
   
   static void
   xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data *pdata)
   {
           struct xgbe_hw_if *hw_if = &pdata->hw_if;
           struct xgbe_channel *channel;
           struct xgbe_ring *ring;
           struct xgbe_ring_data *rdata;
           struct xgbe_ring_desc *rdesc;
           bus_addr_t rdesc_paddr;
           unsigned int i, j;
   
           DBGPR("-->xgbe_wrapper_tx_descriptor_init\n");
   
           for (i = 0; i < pdata->channel_count; i++) {
   
                   channel = pdata->channel[i];
   
                   ring = channel->tx_ring;
                   if (!ring)
                           break;
   
                   rdesc = ring->rdesc;
                   rdesc_paddr = ring->rdesc_paddr;
   
                   for (j = 0; j < ring->rdesc_count; j++) {
                           rdata = XGBE_GET_DESC_DATA(ring, j);
   
                           rdata->rdesc = rdesc;
                           rdata->rdata_paddr = rdesc_paddr;
   
                           rdesc++;
                           rdesc_paddr += sizeof(struct xgbe_ring_desc);
                   }
   
                   ring->cur = 0;
                   ring->dirty = 0;
                   memset(&ring->tx, 0, sizeof(ring->tx));
   
                   hw_if->tx_desc_init(channel);
           }
   
           DBGPR("<--xgbe_wrapper_tx_descriptor_init\n");
   }
   
   static void
   xgbe_wrapper_rx_descriptor_init(struct xgbe_prv_data *pdata)
   {
           struct xgbe_hw_if *hw_if = &pdata->hw_if;
           struct xgbe_channel *channel;
           struct xgbe_ring *ring;
           struct xgbe_ring_desc *rdesc;
           struct xgbe_ring_data *rdata;
           bus_addr_t rdesc_paddr;
           unsigned int i, j;
   
           DBGPR("-->xgbe_wrapper_rx_descriptor_init\n");
   
           for (i = 0; i < pdata->channel_count; i++) {
   
                   channel = pdata->channel[i];
   
                   ring = channel->rx_ring;
                   if (!ring)
                           break;
   
                   rdesc = ring->rdesc;
                   rdesc_paddr = ring->rdesc_paddr;
   
                   for (j = 0; j < ring->rdesc_count; j++) {
                           rdata = XGBE_GET_DESC_DATA(ring, j);
   
                           rdata->rdesc = rdesc;
                           rdata->rdata_paddr = rdesc_paddr;
   
                           rdesc++;
                           rdesc_paddr += sizeof(struct xgbe_ring_desc);
                   }
   
                   ring->cur = 0;
                   ring->dirty = 0;
   
                   hw_if->rx_desc_init(channel);
           }
   }
   
   void
   xgbe_init_function_ptrs_desc(struct xgbe_desc_if *desc_if)
   {
   
           desc_if->wrapper_tx_desc_init = xgbe_wrapper_tx_descriptor_init;
           desc_if->wrapper_rx_desc_init = xgbe_wrapper_rx_descriptor_init;
   }

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