LXR linux/drivers/net/ethernet/amd/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, see <http://www.gnu.org/licenses/>.
  22 *
  23 * ########################################################################
  24 *
  25 *
  26 */
  27
  28
  29#define MAC_IOSIZE 0x10000
  30#define NUM_RX_DMA 4       /* Au1x00 has 4 rx hardware descriptors */
  31#define NUM_TX_DMA 4       /* Au1x00 has 4 tx hardware descriptors */
  32
  33#define NUM_RX_BUFFS 4
  34#define NUM_TX_BUFFS 4
  35#define MAX_BUF_SIZE 2048
  36
  37#define ETH_TX_TIMEOUT (HZ/4)
  38#define MAC_MIN_PKT_SIZE 64
  39
  40#define MULTICAST_FILTER_LIMIT 64
  41
  42/*
  43 * Data Buffer Descriptor. Data buffers must be aligned on 32 byte
  44 * boundary for both, receive and transmit.
  45 */
  46struct db_dest {
  47        struct db_dest *pnext;
  48        u32 *vaddr;
  49        dma_addr_t dma_addr;
  50};
  51
  52/*
  53 * The transmit and receive descriptors are memory
  54 * mapped registers.
  55 */
  56struct tx_dma {
  57        u32 status;
  58        u32 buff_stat;
  59        u32 len;
  60        u32 pad;
  61};
  62
  63struct rx_dma {
  64        u32 status;
  65        u32 buff_stat;
  66        u32 pad[2];
  67};
  68
  69
  70/*
  71 * MAC control registers, memory mapped.
  72 */
  73struct mac_reg {
  74        u32 control;
  75        u32 mac_addr_high;
  76        u32 mac_addr_low;
  77        u32 multi_hash_high;
  78        u32 multi_hash_low;
  79        u32 mii_control;
  80        u32 mii_data;
  81        u32 flow_control;
  82        u32 vlan1_tag;
  83        u32 vlan2_tag;
  84};
  85
  86
  87struct au1000_private {
  88        struct db_dest *pDBfree;
  89        struct db_dest db[NUM_RX_BUFFS+NUM_TX_BUFFS];
  90        struct rx_dma *rx_dma_ring[NUM_RX_DMA];
  91        struct tx_dma *tx_dma_ring[NUM_TX_DMA];
  92        struct db_dest *rx_db_inuse[NUM_RX_DMA];
  93        struct db_dest *tx_db_inuse[NUM_TX_DMA];
  94        u32 rx_head;
  95        u32 tx_head;
  96        u32 tx_tail;
  97        u32 tx_full;
  98
  99        int mac_id;
 100
 101        int mac_enabled;       /* whether MAC is currently enabled and running
 102                                * (req. for mdio)
 103                                */
 104
 105        int old_link;          /* used by au1000_adjust_link */
 106        int old_speed;
 107        int old_duplex;
 108
 109        struct mii_bus *mii_bus;
 110
 111        /* PHY configuration */
 112        int phy_static_config;
 113        int phy_search_highest_addr;
 114        int phy1_search_mac0;
 115
 116        int phy_addr;
 117        int phy_busid;
 118        int phy_irq;
 119
 120        /* These variables are just for quick access
 121         * to certain regs addresses.
 122         */
 123        struct mac_reg *mac;  /* mac registers                      */
 124        u32 *enable;     /* address of MAC Enable Register     */
 125        void __iomem *macdma;   /* base of MAC DMA port */
 126        u32 vaddr;                /* virtual address of rx/tx buffers   */
 127        dma_addr_t dma_addr;      /* dma address of rx/tx buffers       */
 128
 129        spinlock_t lock;       /* Serialise access to device */
 130
 131        u32 msg_enable;
 132};
 133