if_vtevar.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2010, Pyun YongHyeon <yongari@FreeBSD.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice unmodified, this list of conditions, and the following
   12  *    disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  * $FreeBSD$
   30  */
   31 
   32 #ifndef _IF_VTEVAR_H
   33 #define _IF_VTEVAR_H
   34 
   35 #define VTE_TX_RING_CNT         64
   36 #define VTE_TX_RING_ALIGN       16
   37 /*
   38  * The TX/RX descriptor format has no limitation for number of
   39  * descriptors in TX/RX ring.  However, the maximum number of
   40  * descriptors that could be set as RX descriptor ring residue
   41  * counter is 255.  This effectively limits number of RX
   42  * descriptors available to be less than or equal to 255.
   43  */
   44 #define VTE_RX_RING_CNT         128
   45 #define VTE_RX_RING_ALIGN       16
   46 #define VTE_RX_BUF_ALIGN        4
   47 
   48 #define VTE_DESC_INC(x, y)      ((x) = ((x) + 1) % (y))
   49 
   50 #define VTE_TX_RING_SZ          \
   51         (sizeof(struct vte_tx_desc) * VTE_TX_RING_CNT)
   52 #define VTE_RX_RING_SZ          \
   53         (sizeof(struct vte_rx_desc) * VTE_RX_RING_CNT)
   54 
   55 #define VTE_RX_BUF_SIZE_MAX     (MCLBYTES - sizeof(uint32_t))
   56 
   57 #define VTE_MIN_FRAMELEN        (ETHER_MIN_LEN - ETHER_CRC_LEN)
   58 
   59 struct vte_rxdesc {
   60         struct mbuf             *rx_m;
   61         bus_dmamap_t            rx_dmamap;
   62         struct vte_rx_desc      *rx_desc;
   63 };
   64 
   65 struct vte_txdesc {
   66         struct mbuf             *tx_m;
   67         bus_dmamap_t            tx_dmamap;
   68         struct vte_tx_desc      *tx_desc;
   69         int                     tx_flags;
   70 #define VTE_TXMBUF              0x0001
   71 };
   72 
   73 struct vte_chain_data {
   74         bus_dma_tag_t           vte_parent_tag;
   75         bus_dma_tag_t           vte_buffer_tag;
   76         bus_dma_tag_t           vte_tx_tag;
   77         struct vte_txdesc       vte_txdesc[VTE_TX_RING_CNT];
   78         struct mbuf             *vte_txmbufs[VTE_TX_RING_CNT];
   79         bus_dma_tag_t           vte_rx_tag;
   80         struct vte_rxdesc       vte_rxdesc[VTE_RX_RING_CNT];
   81         bus_dma_tag_t           vte_tx_ring_tag;
   82         bus_dmamap_t            vte_tx_ring_map;
   83         bus_dma_tag_t           vte_rx_ring_tag;
   84         bus_dmamap_t            vte_rx_ring_map;
   85         bus_dmamap_t            vte_rx_sparemap;
   86         struct vte_tx_desc      *vte_tx_ring;
   87         bus_addr_t              vte_tx_ring_paddr;
   88         struct vte_rx_desc      *vte_rx_ring;
   89         bus_addr_t              vte_rx_ring_paddr;
   90 
   91         int                     vte_tx_prod;
   92         int                     vte_tx_cons;
   93         int                     vte_tx_cnt;
   94         int                     vte_rx_cons;
   95 };
   96 
   97 struct vte_hw_stats {
   98         /* RX stats. */
   99         uint32_t rx_frames;
  100         uint32_t rx_bcast_frames;
  101         uint32_t rx_mcast_frames;
  102         uint32_t rx_runts;
  103         uint32_t rx_crcerrs;
  104         uint32_t rx_long_frames;
  105         uint32_t rx_fifo_full;
  106         uint32_t rx_desc_unavail;
  107         uint32_t rx_pause_frames;
  108 
  109         /* TX stats. */
  110         uint32_t tx_frames;
  111         uint32_t tx_underruns;
  112         uint32_t tx_late_colls;
  113         uint32_t tx_pause_frames;
  114 };
  115 
  116 struct vte_ident {
  117         uint16_t        vendorid;
  118         uint16_t        deviceid;
  119         const char      *name;
  120 };
  121 
  122 /*
  123  * Software state per device.
  124  */
  125 struct vte_softc {
  126         struct ifnet            *vte_ifp;
  127         device_t                vte_dev;
  128         device_t                vte_miibus;
  129         struct resource         *vte_res;
  130         int                     vte_res_id;
  131         int                     vte_res_type;
  132         struct resource         *vte_irq;
  133         void                    *vte_intrhand;
  134         const struct vte_ident  *vte_ident;
  135         uint8_t                 vte_eaddr[ETHER_ADDR_LEN];
  136         int                     vte_flags;
  137 #define VTE_FLAG_LINK           0x8000
  138 
  139         struct callout          vte_tick_ch;
  140         struct vte_hw_stats     vte_stats;
  141         struct vte_chain_data   vte_cdata;
  142         int                     vte_if_flags;
  143         int                     vte_watchdog_timer;
  144         int                     vte_int_rx_mod;
  145         int                     vte_int_tx_mod;
  146 
  147         struct mtx              vte_mtx;
  148 };
  149 
  150 /* Register access macros. */
  151 #define CSR_WRITE_2(_sc, reg, val)      \
  152         bus_write_2((_sc)->vte_res, (reg), (val))
  153 #define CSR_READ_2(_sc, reg)            \
  154         bus_read_2((_sc)->vte_res, (reg))
  155 
  156 #define VTE_LOCK(_sc)           mtx_lock(&(_sc)->vte_mtx)
  157 #define VTE_UNLOCK(_sc)         mtx_unlock(&(_sc)->vte_mtx)
  158 #define VTE_LOCK_ASSERT(_sc)    mtx_assert(&(_sc)->vte_mtx, MA_OWNED)
  159 
  160 #define VTE_TX_TIMEOUT          5
  161 #define VTE_RESET_TIMEOUT       100
  162 #define VTE_TIMEOUT             1000
  163 #define VTE_PHY_TIMEOUT         1000
  164 
  165 #endif  /* _IF_VTEVAR_H */

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FreeBSD/Linux Kernel Cross Reference sys/dev/vte/if_vtevar.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/vte/if_vtevar.h