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
58
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