LXR linux/drivers/net/ethernet/atheros/alx/alx.h

   1/*
   2 * Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
   3 *
   4 *  This file is free software: you may copy, redistribute and/or modify it
   5 *  under the terms of the GNU General Public License as published by the
   6 *  Free Software Foundation, either version 2 of the License, or (at your
   7 *  option) any later version.
   8 *
   9 *  This file is distributed in the hope that it will be useful, but
  10 *  WITHOUT ANY WARRANTY; without even the implied warranty of
  11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 *  General Public License for more details.
  13 *
  14 *  You should have received a copy of the GNU General Public License
  15 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 *
  17 * This file incorporates work covered by the following copyright and
  18 * permission notice:
  19 *
  20 * Copyright (c) 2012 Qualcomm Atheros, Inc.
  21 *
  22 * Permission to use, copy, modify, and/or distribute this software for any
  23 * purpose with or without fee is hereby granted, provided that the above
  24 * copyright notice and this permission notice appear in all copies.
  25 *
  26 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  27 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  28 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  29 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  30 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  31 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  32 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  33 */
  34
  35#ifndef _ALX_H_
  36#define _ALX_H_
  37
  38#include <linux/types.h>
  39#include <linux/etherdevice.h>
  40#include <linux/dma-mapping.h>
  41#include <linux/spinlock.h>
  42#include "hw.h"
  43
  44#define ALX_WATCHDOG_TIME   (5 * HZ)
  45
  46struct alx_buffer {
  47        struct sk_buff *skb;
  48        DEFINE_DMA_UNMAP_ADDR(dma);
  49        DEFINE_DMA_UNMAP_LEN(size);
  50};
  51
  52struct alx_rx_queue {
  53        struct alx_rrd *rrd;
  54        dma_addr_t rrd_dma;
  55
  56        struct alx_rfd *rfd;
  57        dma_addr_t rfd_dma;
  58
  59        struct alx_buffer *bufs;
  60
  61        u16 write_idx, read_idx;
  62        u16 rrd_read_idx;
  63};
  64#define ALX_RX_ALLOC_THRESH     32
  65
  66struct alx_tx_queue {
  67        struct alx_txd *tpd;
  68        dma_addr_t tpd_dma;
  69        struct alx_buffer *bufs;
  70        u16 write_idx, read_idx;
  71};
  72
  73#define ALX_DEFAULT_TX_WORK 128
  74
  75enum alx_device_quirks {
  76        ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
  77};
  78
  79struct alx_priv {
  80        struct net_device *dev;
  81
  82        struct alx_hw hw;
  83
  84        /* all descriptor memory */
  85        struct {
  86                dma_addr_t dma;
  87                void *virt;
  88                unsigned int size;
  89        } descmem;
  90
  91        /* protect int_mask updates */
  92        spinlock_t irq_lock;
  93        u32 int_mask;
  94
  95        unsigned int tx_ringsz;
  96        unsigned int rx_ringsz;
  97        unsigned int rxbuf_size;
  98
  99        struct napi_struct napi;
 100        struct alx_tx_queue txq;
 101        struct alx_rx_queue rxq;
 102
 103        struct work_struct link_check_wk;
 104        struct work_struct reset_wk;
 105
 106        u16 msg_enable;
 107
 108        bool msi;
 109};
 110
 111extern const struct ethtool_ops alx_ethtool_ops;
 112extern const char alx_drv_name[];
 113
 114#endif
 115