smc91111.h

smc9111网卡芯片的linux驱动程序

/*------------------------------------------------------------------------
 . smc91111.h - macros for the LAN91C111 Ethernet Driver
 .
 . Copyright (C) 2001 Standard Microsystems Corporation (SMSC)
 .       Developed by Simple Network Magic Corporation (SNMC)
 . Copyright (C) 1996 by Erik Stahlman (ES)
 .
 . This program is free software; you can redistribute it and/or modify
 . it under the terms of the GNU General Public License as published by
 . the Free Software Foundation; either version 2 of the License, or
 . (at your option) any later version.
 .
 . This program is distributed in the hope that 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
 .
 . This file contains register information and access macros for 
 . the LAN91C111 single chip ethernet controller.  It is a modified
 . version of the smc9194.h file.
 . 
 . Information contained in this file was obtained from the LAN91C111
 . manual from SMC.  To get a copy, if you really want one, you can find 
 . information under www.smsc.com.
 . 
 . Authors
 . 	Erik Stahlman				( [e-mail] )
 .	Daris A Nevil				( [e-mail] )
 .
 . History
 . 03/16/01		Daris A Nevil	Modified for use with LAN91C111 device
 . 12/20/01	Jeff Sutherland <[e-mail]> Added support for 
 . 		architectures other than i386; ported to ARM specifically
 .
 ---------------------------------------------------------------------------*/
#ifndef _SMC91111_H_
#define _SMC91111_H_

#include <asm/hardware.h>

/*---------------------------------------------------------------
 .  
 . A description of the SMSC registers is probably in order here,
 . although for details, the SMC datasheet is invaluable.  
 . 
 . Basically, the chip has 4 banks of registers ( 0 to 3 ), which
 . are accessed by writing a number into the BANK_SELECT register
 . ( I also use a SMC_SELECT_BANK macro for this ).
 . 
 . The banks are configured so that for most purposes, bank 2 is all
 . that is needed for simple run time tasks.  
 -----------------------------------------------------------------------*/

/*
 . Bank Select Register: 
 .
 .		yyyy yyyy 0000 00xx  
 .		xx 		= bank number
 .		yyyy yyyy	= 0x33, for identification purposes.
*/
#define	BANK_SELECT		14

// Transmit Control Register
/* BANK 0  */
#define	TCR_REG 	0x0000 	// transmit control register 
#define TCR_ENABLE	0x0001	// When 1 we can transmit
#define TCR_LOOP	0x0002	// Controls output pin LBK
#define TCR_FORCOL	0x0004	// When 1 will force a collision
#define TCR_PAD_EN	0x0080	// When 1 will pad tx frames < 64 bytes w/0
#define TCR_NOCRC	0x0100	// When 1 will not append CRC to tx frames
#define TCR_MON_CSN	0x0400	// When 1 tx monitors carrier
#define TCR_FDUPLX    	0x0800  // When 1 enables full duplex operation
#define TCR_STP_SQET	0x1000	// When 1 stops tx if Signal Quality Error
#define	TCR_EPH_LOOP	0x2000	// When 1 enables EPH block loopback
#define	TCR_SWFDUP	0x8000	// When 1 enables Switched Full Duplex mode

#define	TCR_CLEAR	0	/* do NOTHING */
/* the default settings for the TCR register : */ 
/* QUESTION: do I want to enable padding of short packets ? */
#define	TCR_DEFAULT  	TCR_ENABLE 


// EPH Status Register
/* BANK 0  */
#define EPH_STATUS_REG	0x0002
#define ES_TX_SUC	0x0001	// Last TX was successful
#define ES_SNGL_COL	0x0002	// Single collision detected for last tx
#define ES_MUL_COL	0x0004	// Multiple collisions detected for last tx
#define ES_LTX_MULT	0x0008	// Last tx was a multicast
#define ES_16COL	0x0010	// 16 Collisions Reached
#define ES_SQET		0x0020	// Signal Quality Error Test
#define ES_LTXBRD	0x0040	// Last tx was a broadcast
#define ES_TXDEFR	0x0080	// Transmit Deferred
#define ES_LATCOL	0x0200	// Late collision detected on last tx
#define ES_LOSTCARR	0x0400	// Lost Carrier Sense
#define ES_EXC_DEF	0x0800	// Excessive Deferral
#define ES_CTR_ROL	0x1000	// Counter Roll Over indication
#define ES_LINK_OK	0x4000	// Driven by inverted value of nLNK pin
#define ES_TXUNRN	0x8000	// Tx Underrun


// Receive Control Register
/* BANK 0  */
#define	RCR_REG		0x0004
#define	RCR_RX_ABORT	0x0001	// Set if a rx frame was aborted
#define	RCR_PRMS	0x0002	// Enable promiscuous mode
#define	RCR_ALMUL	0x0004	// When set accepts all multicast frames
#define RCR_RXEN	0x0100	// IFF this is set, we can receive packets
#define	RCR_STRIP_CRC	0x0200	// When set strips CRC from rx packets
#define	RCR_ABORT_ENB	0x0200	// When set will abort rx on collision 
#define	RCR_FILT_CAR	0x0400	// When set filters leading 12 bit s of carrier
#define RCR_SOFTRST	0x8000 	// resets the chip

/* the normal settings for the RCR register : */
#define	RCR_DEFAULT	(RCR_STRIP_CRC | RCR_RXEN)
#define RCR_CLEAR	0x0	// set it to a base state

// Counter Register
/* BANK 0  */
#define	COUNTER_REG	0x0006

// Memory Information Register
/* BANK 0  */
#define	MIR_REG		0x0008

// Receive/Phy Control Register
/* BANK 0  */
#define	RPC_REG		0x000A
#define	RPC_SPEED	0x2000	// When 1 PHY is in 100Mbps mode.
#define	RPC_DPLX	0x1000	// When 1 PHY is in Full-Duplex Mode
#define	RPC_ANEG	0x0800	// When 1 PHY is in Auto-Negotiate Mode
#define	RPC_LSXA_SHFT	5	// Bits to shift LS2A,LS1A,LS0A to lsb
#define	RPC_LSXB_SHFT	2	// Bits to get LS2B,LS1B,LS0B to lsb
#define RPC_LED_100_10	(0x00)	// LED = 100Mbps OR's with 10Mbps link detect
#define RPC_LED_RES	(0x01)	// LED = Reserved
#define RPC_LED_10	(0x02)	// LED = 10Mbps link detect
#define RPC_LED_FD	(0x03)	// LED = Full Duplex Mode
#define RPC_LED_TX_RX	(0x04)	// LED = TX or RX packet occurred
#define RPC_LED_100	(0x05)	// LED = 100Mbps link dectect
#define RPC_LED_TX	(0x06)	// LED = TX packet occurred
#define RPC_LED_RX	(0x07)	// LED = RX packet occurred
#define RPC_DEFAULT (RPC_ANEG | (RPC_LED_100 << RPC_LSXA_SHFT)	\
		    |  (RPC_LED_100_10 << RPC_LSXB_SHFT) 	\
		    | (RPC_LED_TX_RX << RPC_LSXA_SHFT)		\
		    | RPC_SPEED 				\
		    | RPC_DPLX)
/* Bank 0 0x000C is reserved */

// Bank Select Register
/* All Banks */
#define BSR_REG	0x000E


// Configuration Reg
/* BANK 1 */
#define CONFIG_REG	0x0000
#define CONFIG_EXT_PHY	0x0200	// 1=external MII, 0=internal Phy
#define CONFIG_GPCNTRL	0x0400	// Inverse value drives pin nCNTRL
#define CONFIG_NO_WAIT	0x1000	// When 1 no extra wait states on ISA bus
#define CONFIG_EPH_POWER_EN 0x8000 // When 0 EPH is placed into low power mode.

// Default is powered-up, Internal Phy, Wait States, and pin nCNTRL=low
#define CONFIG_DEFAULT	(CONFIG_EPH_POWER_EN)


// Base Address Register
/* BANK 1 */
#define	BASE_REG	0x0002


// Individual Address Registers
/* BANK 1 */
#define	ADDR0_REG	0x0004
#define	ADDR1_REG	0x0006
#define	ADDR2_REG	0x0008


// General Purpose Register
/* BANK 1 */
#define	GP_REG		0x000A


// Control Register
/* BANK 1 */
#define	CTL_REG		0x000C
#define CTL_RCV_BAD	0x4000 // When 1 bad CRC packets are received
#define CTL_AUTO_RELEASE 0x0800 // When 1 tx pages are released automatically
#define	CTL_LE_ENABLE	0x0080 // When 1 enables Link Error interrupt
#define	CTL_CR_ENABLE	0x0040 // When 1 enables Counter Rollover interrupt
#define	CTL_TE_ENABLE	0x0020 // When 1 enables Transmit Error interrupt
#define	CTL_EEPROM_SELECT 0x0004 // Controls EEPROM reload & store
#define	CTL_RELOAD	0x0002 // When set reads EEPROM into registers
#define	CTL_STORE	0x0001 // When set stores registers into EEPROM


// MMU Command Register
/* BANK 2 */
#define MMU_CMD_REG	0x0000
#define MC_BUSY		1	// When 1 the last release has not completed
#define MC_NOP		(0<<5)	// No Op
#define	MC_ALLOC	(1<<5) 	// OR with number of 256 byte packets
#define	MC_RESET	(2<<5)	// Reset MMU to initial state
#define	MC_REMOVE	(3<<5) 	// Remove the current rx packet
#define MC_RELEASE  	(4<<5) 	// Remove and release the current rx packet
#define MC_FREEPKT  	(5<<5) 	// Release packet in PNR register
#define MC_ENQUEUE	(6<<5)	// Enqueue the packet for transmit
#define MC_RSTTXFIFO	(7<<5)	// Reset the TX FIFOs


// Packet Number Register
/* BANK 2 */
#define	PN_REG		0x0002


// Allocation Result Register
/* BANK 2 */
#define	AR_REG		0x0003
#define AR_FAILED	0x80	// Alocation Failed


// RX FIFO Ports Register
/* BANK 2 */
#define RXFIFO_REG	0x0004	// Must be read as a word
#define RXFIFO_REMPTY	0x8000	// RX FIFO Empty


// TX FIFO Ports Register
/* BANK 2 */
#define TXFIFO_REG	RXFIFO_REG	// Must be read as a word
#define TXFIFO_TEMPTY	0x80	// TX FIFO Empty


// Pointer Register
/* BANK 2 */
#define PTR_REG		0x0006
#define	PTR_RCV		0x8000 // 1=Receive area, 0=Transmit area
#define	PTR_AUTOINC 	0x4000 // Auto increment the pointer on each access
#define PTR_READ	0x2000 // When 1 the operation is a read
#define PTR_NOTEMPTY    0x0800 // set when data register fifo is not empty

// Data Register
/* BANK 2 */
#define	DATA_REG	0x0008


// Interrupt Status/Acknowledge Register
/* BANK 2 */
#define	INT_REG		0x000C


// Interrupt Mask Register
/* BANK 2 */
#define IM_REG		0x000D
#define	IM_MDINT	0x80 // PHY MI Register 18 Interrupt
#define	IM_ERCV_INT	0x40 // Early Receive Interrupt
#define	IM_EPH_INT	0x20 // Set by Etheret Protocol Handler section
#define	IM_RX_OVRN_INT	0x10 // Set by Receiver Overruns
#define	IM_ALLOC_INT	0x08 // Set when allocation request is completed
#define	IM_TX_EMPTY_INT	0x04 // Set if the TX FIFO goes empty
#define	IM_TX_INT	0x02 // Transmit Interrrupt
#define IM_RCV_INT	0x01 // Receive Interrupt