LXR linux/drivers/net/au1000

   1/*
   2 *
   3 * Alchemy Au1x00 ethernet driver include file
   4 *
   5 * Author: Pete Popov <ppopov@mvista.com>
   6 *
   7 * Copyright 2001 MontaVista Software Inc.
   8 *
   9 * ########################################################################
  10 *
  11 *  This program is free software; you can distribute it and/or modify it
  12 *  under the terms of the GNU General Public License (Version 2) as
  13 *  published by the Free Software Foundation.
  14 *
  15 *  This program is distributed in the hope it will be useful, but WITHOUT
  16 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 *  for more details.
  19 *
  20 *  You should have received a copy of the GNU General Public License along
  21 *  with this program; if not, write to the Free Software Foundation, Inc.,
  22 *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  23 *
  24 * ########################################################################
  25 *
  26 *
  27 */
  28
  29
  30#define MAC_IOSIZE 0x10000
  31#define NUM_RX_DMA 4       /* Au1x00 has 4 rx hardware descriptors */
  32#define NUM_TX_DMA 4       /* Au1x00 has 4 tx hardware descriptors */
  33
  34#define NUM_RX_BUFFS 4
  35#define NUM_TX_BUFFS 4
  36#define MAX_BUF_SIZE 2048
  37
  38#define ETH_TX_TIMEOUT HZ/4
  39#define MAC_MIN_PKT_SIZE 64
  40
  41#define MULTICAST_FILTER_LIMIT 64
  42
  43/*
  44 * Data Buffer Descriptor. Data buffers must be aligned on 32 byte
  45 * boundary for both, receive and transmit.
  46 */
  47typedef struct db_dest {
  48        struct db_dest *pnext;
  49        volatile u32 *vaddr;
  50        dma_addr_t dma_addr;
  51} db_dest_t;
  52
  53/*
  54 * The transmit and receive descriptors are memory
  55 * mapped registers.
  56 */
  57typedef struct tx_dma {
  58        u32 status;
  59        u32 buff_stat;
  60        u32 len;
  61        u32 pad;
  62} tx_dma_t;
  63
  64typedef struct rx_dma {
  65        u32 status;
  66        u32 buff_stat;
  67        u32 pad[2];
  68} rx_dma_t;
  69
  70
  71/*
  72 * MAC control registers, memory mapped.
  73 */
  74typedef struct mac_reg {
  75        u32 control;
  76        u32 mac_addr_high;
  77        u32 mac_addr_low;
  78        u32 multi_hash_high;
  79        u32 multi_hash_low;
  80        u32 mii_control;
  81        u32 mii_data;
  82        u32 flow_control;
  83        u32 vlan1_tag;
  84        u32 vlan2_tag;
  85} mac_reg_t;
  86
  87
  88struct au1000_private {
  89        db_dest_t *pDBfree;
  90        db_dest_t db[NUM_RX_BUFFS+NUM_TX_BUFFS];
  91        volatile rx_dma_t *rx_dma_ring[NUM_RX_DMA];
  92        volatile tx_dma_t *tx_dma_ring[NUM_TX_DMA];
  93        db_dest_t *rx_db_inuse[NUM_RX_DMA];
  94        db_dest_t *tx_db_inuse[NUM_TX_DMA];
  95        u32 rx_head;
  96        u32 tx_head;
  97        u32 tx_tail;
  98        u32 tx_full;
  99
 100        int mac_id;
 101
 102        int mac_enabled;       /* whether MAC is currently enabled and running (req. for mdio) */
 103
 104        int old_link;          /* used by au1000_adjust_link */
 105        int old_speed;
 106        int old_duplex;
 107
 108        struct phy_device *phy_dev;
 109        struct mii_bus *mii_bus;
 110
 111        /* These variables are just for quick access to certain regs addresses. */
 112        volatile mac_reg_t *mac;  /* mac registers                      */
 113        volatile u32 *enable;     /* address of MAC Enable Register     */
 114
 115        u32 vaddr;                /* virtual address of rx/tx buffers   */
 116        dma_addr_t dma_addr;      /* dma address of rx/tx buffers       */
 117
 118        spinlock_t lock;       /* Serialise access to device */
 119};
 120