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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070043/*
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 {
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 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;
Herbert Valerio Riedel0638dec2006-06-01 09:41:04 +0200101
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;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 struct net_device_stats stats;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119 spinlock_t lock; /* Serialise access to device */
120};