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, 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 43 /* 44 * Data Buffer Descriptor. Data buffers must be aligned on 32 byte 45 * boundary for both, receive and transmit. 46 */ 47 typedef 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 */ 57 typedef struct tx_dma { 58 u32 status; 59 u32 buff_stat; 60 u32 len; 61 u32 pad; 62 } tx_dma_t; 63 64 typedef 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 */ 74 typedef 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 88 struct au1000_private { 89 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; 101 102 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; 110 111 /* 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 */ 117 118 spinlock_t lock; /* Serialise access to device */ 119 }; 120