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
40struct ixpdev_rx_desc
41{
42	u32	buf_addr;
43	u32	buf_length;
44	u32	channel;
45	u32	pkt_length;
46};
47
48struct ixpdev_tx_desc
49{
50	u32	buf_addr;
51	u32	pkt_length;
52	u32	channel;
53	u32	unused;
54};
55
56
57#endif
58