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au1000_eth.h
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/*
*
* 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
/* FIXME
* The PHY defines should be in a separate file.
*/
/* MII register offsets */
#define MII_CONTROL 0x0000
#define MII_STATUS 0x0001
#define MII_PHY_ID0 0x0002
#define MII_PHY_ID1 0x0003
#define MII_ANADV 0x0004
#define MII_ANLPAR 0x0005
#define MII_AEXP 0x0006
#define MII_ANEXT 0x0007
#define MII_LSI_PHY_CONFIG 0x0011
/* Status register */
#define MII_LSI_PHY_STAT 0x0012
#define MII_AMD_PHY_STAT MII_LSI_PHY_STAT
#define MII_INTEL_PHY_STAT 0x0011
#define MII_AUX_CNTRL 0x0018
/* mii registers specific to AMD 79C901 */
#define MII_STATUS_SUMMARY = 0x0018
/* MII Control register bit definitions. */
#define MII_CNTL_FDX 0x0100
#define MII_CNTL_RST_AUTO 0x0200
#define MII_CNTL_ISOLATE 0x0400
#define MII_CNTL_PWRDWN 0x0800
#define MII_CNTL_AUTO 0x1000
#define MII_CNTL_F100 0x2000
#define MII_CNTL_LPBK 0x4000
#define MII_CNTL_RESET 0x8000
/* MII Status register bit */
#define MII_STAT_EXT 0x0001
#define MII_STAT_JAB 0x0002
#define MII_STAT_LINK 0x0004
#define MII_STAT_CAN_AUTO 0x0008
#define MII_STAT_FAULT 0x0010
#define MII_STAT_AUTO_DONE 0x0020
#define MII_STAT_CAN_T 0x0800
#define MII_STAT_CAN_T_FDX 0x1000
#define MII_STAT_CAN_TX 0x2000
#define MII_STAT_CAN_TX_FDX 0x4000
#define MII_STAT_CAN_T4 0x8000
#define MII_ID1_OUI_LO 0xFC00 /* low bits of OUI mask */
#define MII_ID1_MODEL 0x03F0 /* model number */
#define MII_ID1_REV 0x000F /* model number */
/* MII NWAY Register Bits ...
valid for the ANAR (Auto-Negotiation Advertisement) and
ANLPAR (Auto-Negotiation Link Partner) registers */
#define MII_NWAY_NODE_SEL 0x001f
#define MII_NWAY_CSMA_CD 0x0001
#define MII_NWAY_T 0x0020
#define MII_NWAY_T_FDX 0x0040
#define MII_NWAY_TX 0x0080
#define MII_NWAY_TX_FDX 0x0100
#define MII_NWAY_T4 0x0200
#define MII_NWAY_PAUSE 0x0400
#define MII_NWAY_RF 0x2000 /* Remote Fault */
#define MII_NWAY_ACK 0x4000 /* Remote Acknowledge */
#define MII_NWAY_NP 0x8000 /* Next Page (Enable) */
/* mii stsout register bits */
#define MII_STSOUT_LINK_FAIL 0x4000
#define MII_STSOUT_SPD 0x0080
#define MII_STSOUT_DPLX 0x0040
/* mii stsics register bits */
#define MII_STSICS_SPD 0x8000
#define MII_STSICS_DPLX 0x4000
#define MII_STSICS_LINKSTS 0x0001
/* mii stssum register bits */
#define MII_STSSUM_LINK 0x0008
#define MII_STSSUM_DPLX 0x0004
#define MII_STSSUM_AUTO 0x0002
#define MII_STSSUM_SPD 0x0001
/* lsi phy status register */
#define MII_LSI_PHY_STAT_FDX 0x0040
#define MII_LSI_PHY_STAT_SPD 0x0080
/* amd phy status register */
#define MII_AMD_PHY_STAT_FDX 0x0800
#define MII_AMD_PHY_STAT_SPD 0x0400
/* intel phy status register */
#define MII_INTEL_PHY_STAT_FDX 0x0200
#define MII_INTEL_PHY_STAT_SPD 0x4000
/* Auxilliary Control/Status Register */
#define MII_AUX_FDX 0x0001
#define MII_AUX_100 0x0002
#define MII_AUX_F100 0x0004
#define MII_AUX_ANEG 0x0008
typedef struct mii_phy {
struct mii_phy * next;
struct mii_chip_info * chip_info;
u16 status;
u32 *mii_control_reg;
u32 *mii_data_reg;
} mii_phy_t;
struct phy_ops {
int (*phy_init) (struct net_device *, int);
int (*phy_reset) (struct net_device *, int);
int (*phy_status) (struct net_device *, int, u16 *, u16 *);
};
/*
* 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;
mii_phy_t *mii;
struct phy_ops *phy_ops;
/* 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 */
u8 *hash_table;
u32 hash_mode;
u32 intr_work_done; /* number of Rx and Tx pkts processed in the isr */
int phy_addr; /* phy address */
u32 options; /* User-settable misc. driver options. */
u32 drv_flags;
int want_autoneg;
struct net_device_stats stats;
struct timer_list timer;
spinlock_t lock; /* Serialise access to device */
};