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
  46 struct alx_buffer {
  47         struct sk_buff *skb;
  48         DEFINE_DMA_UNMAP_ADDR(dma);
  49         DEFINE_DMA_UNMAP_LEN(size);
  50 };
  51
  52 struct 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
  66 struct 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
  75 enum alx_device_quirks {
  76         ALX_DEV_QUIRK_MSI_INTX_DISABLE_BUG = BIT(0),
  77 };
  78
  79 struct 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         /* protects hw.stats */
 111         spinlock_t stats_lock;
 112 };
 113
 114 extern const struct ethtool_ops alx_ethtool_ops;
 115 extern const char alx_drv_name[];
 116
 117 #endif