/* * * Alchemy Au1x00 ethernet driver include file * * Author: Pete Popov <ppopov@mvista.com> * * Copyright 2001 MontaVista Software Inc. * * ######################################################################## * * This program is free software; you can distribute it and/or modify it * under the terms of the GNU General Public License (Version 2) as * published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. * * ######################################################################## * * */ #define MAC_IOSIZE 0x10000 #define NUM_RX_DMA 4 /* Au1x00 has 4 rx hardware descriptors */ #define NUM_TX_DMA 4 /* Au1x00 has 4 tx hardware descriptors */ #define NUM_RX_BUFFS 4 #define NUM_TX_BUFFS 4 #define MAX_BUF_SIZE 2048 #define ETH_TX_TIMEOUT HZ/4 #define MAC_MIN_PKT_SIZE 64 #define MULTICAST_FILTER_LIMIT 64 /* * Data Buffer Descriptor. Data buffers must be aligned on 32 byte * boundary for both, receive and transmit. */ typedef struct db_dest { struct db_dest *pnext; volatile u32 *vaddr; dma_addr_t dma_addr; } db_dest_t; /* * The transmit and receive descriptors are memory * mapped registers. */ typedef struct tx_dma { u32 status; u32 buff_stat; u32 len; u32 pad; } tx_dma_t; typedef struct rx_dma { u32 status; u32 buff_stat; u32 pad[2]; } rx_dma_t; /* * MAC control registers, memory mapped. */ typedef struct mac_reg { u32 control; u32 mac_addr_high; u32 mac_addr_low; u32 multi_hash_high; u32 multi_hash_low; u32 mii_control; u32 mii_data; u32 flow_control; u32 vlan1_tag; u32 vlan2_tag; } mac_reg_t; struct au1000_private { db_dest_t *pDBfree; db_dest_t db[NUM_RX_BUFFS+NUM_TX_BUFFS]; volatile rx_dma_t *rx_dma_ring[NUM_RX_DMA]; volatile tx_dma_t *tx_dma_ring[NUM_TX_DMA]; db_dest_t *rx_db_inuse[NUM_RX_DMA]; db_dest_t *tx_db_inuse[NUM_TX_DMA]; u32 rx_head; u32 tx_head; u32 tx_tail; u32 tx_full; int mac_id; int mac_enabled; /* whether MAC is currently enabled and running (req. for mdio) */ int old_link; /* used by au1000_adjust_link */ int old_speed; int old_duplex; struct phy_device *phy_dev; struct mii_bus *mii_bus; /* These variables are just for quick access to certain regs addresses. */ volatile mac_reg_t *mac; /* mac registers */ volatile u32 *enable; /* address of MAC Enable Register */ u32 vaddr; /* virtual address of rx/tx buffers */ dma_addr_t dma_addr; /* dma address of rx/tx buffers */ spinlock_t lock; /* Serialise access to device */ };