drivers/net/ixp2000/ixpdev_priv.h

   1 /*
   2  * IXP2000 MSF network device driver
   3  * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org>
   4  * Dedicated to Marija Kulikova.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #ifndef __IXPDEV_PRIV_H
  13 #define __IXPDEV_PRIV_H
  14
  15 #define RX_BUF_DESC_BASE        0x00001000
  16 #define RX_BUF_COUNT            ((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_rx_desc)))
  17 #define TX_BUF_DESC_BASE        0x00002000
  18 #define TX_BUF_COUNT            ((3 * PAGE_SIZE) / (4 * sizeof(struct ixpdev_tx_desc)))
  19 #define TX_BUF_COUNT_PER_CHAN   (TX_BUF_COUNT / 4)
  20
  21 #define RING_RX_PENDING         ((u32 *)IXP2000_SCRATCH_RING_VIRT_BASE)
  22 #define RING_RX_DONE            ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 4))
  23 #define RING_TX_PENDING         ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 8))
  24 #define RING_TX_DONE            ((u32 *)(IXP2000_SCRATCH_RING_VIRT_BASE + 12))
  25
  26 #define SCRATCH_REG(x)          ((u32 *)(IXP2000_GLOBAL_REG_VIRT_BASE | 0x0800 | (x)))
  27 #define RING_RX_PENDING_BASE    SCRATCH_REG(0x00)
  28 #define RING_RX_PENDING_HEAD    SCRATCH_REG(0x04)
  29 #define RING_RX_PENDING_TAIL    SCRATCH_REG(0x08)
  30 #define RING_RX_DONE_BASE       SCRATCH_REG(0x10)
  31 #define RING_RX_DONE_HEAD       SCRATCH_REG(0x14)
  32 #define RING_RX_DONE_TAIL       SCRATCH_REG(0x18)
  33 #define RING_TX_PENDING_BASE    SCRATCH_REG(0x20)
  34 #define RING_TX_PENDING_HEAD    SCRATCH_REG(0x24)
  35 #define RING_TX_PENDING_TAIL    SCRATCH_REG(0x28)
  36 #define RING_TX_DONE_BASE       SCRATCH_REG(0x30)
  37 #define RING_TX_DONE_HEAD       SCRATCH_REG(0x34)
  38 #define RING_TX_DONE_TAIL       SCRATCH_REG(0x38)
  39
  40 struct ixpdev_rx_desc
  41 {
  42         u32     buf_addr;
  43         u32     buf_length;
  44         u32     channel;
  45         u32     pkt_length;
  46 };
  47
  48 struct ixpdev_tx_desc
  49 {
  50         u32     buf_addr;
  51         u32     pkt_length;
  52         u32     channel;
  53         u32     unused;
  54 };
  55
  56
  57 #endif