tlan.c

i386的bootloader源码grub

{
	/* if probe_addrs is 0, then routine can use a hardwired default */
	/* if board found */
	{
		/* point to NIC specific routines */
		nic->reset = skel_reset;
		nic->poll = skel_poll;
		nic->transmit = skel_transmit;
		nic->disable = skel_disable;
		return nic;
	}
	/* else */
	return 0;
}

#if	0
#ifndef TLAN_H
#define TLAN_H
/********************************************************************
 *
 *  Linux ThunderLAN Driver
 *
 *  tlan.h
 *  by James Banks
 *
 *  (C) 1997-1998 Caldera, Inc.
 *  (C) 1999-2001 Torben Mathiasen
 * 
 *  This software may be used and distributed according to the terms
 *  of the GNU General Public License, incorporated herein by reference.
 *
 ** This file is best viewed/edited with tabstop=4, colums>=132
 *
 *  
 *  Dec 10, 1999	Torben Mathiasen <[e-mail]>
 *			New Maintainer
 *
 ********************************************************************/

#include <asm/io.h>
#include <asm/types.h>
#include <linux/netdevice.h>

#define FALSE			0
#define TRUE			1

#define TX_TIMEOUT		(10*HZ)	 /* We need time for auto-neg */

typedef struct tlan_adapter_entry {
	u16	vendorId;
	u16	deviceId;
	char	*deviceLabel;
	u32	flags;
	u16	addrOfs;
} TLanAdapterEntry;

	/*****************************************************************
	 * EISA Definitions
	 *
	 ****************************************************************/

#define EISA_ID      0xc80   /* EISA ID Registers */ 
#define EISA_ID0     0xc80   /* EISA ID Register 0 */ 
#define EISA_ID1     0xc81   /* EISA ID Register 1 */ 
#define EISA_ID2     0xc82   /* EISA ID Register 2 */ 
#define EISA_ID3     0xc83   /* EISA ID Register 3 */ 
#define EISA_CR      0xc84   /* EISA Control Register */
#define EISA_REG0    0xc88   /* EISA Configuration Register 0 */
#define EISA_REG1    0xc89   /* EISA Configuration Register 1 */
#define EISA_REG2    0xc8a   /* EISA Configuration Register 2 */
#define EISA_REG3    0xc8f   /* EISA Configuration Register 3 */
#define EISA_APROM   0xc90   /* Ethernet Address PROM */

	/*****************************************************************
	 * Rx/Tx List Definitions
	 *
	 ****************************************************************/

typedef struct tlan_buffer_ref_tag {
	u32	count;
	u32	address;
} TLanBufferRef;

typedef struct tlan_list_tag {
	u32		forward;
	u16		cStat;
	u16		frameSize;
	TLanBufferRef	buffer[TLAN_BUFFERS_PER_LIST];
} TLanList;

typedef u8 TLanBuffer[TLAN_MAX_FRAME_SIZE];

	/*****************************************************************
	 * TLAN Private Information Structure
	 *
	 ****************************************************************/

typedef struct tlan_private_tag {
	struct net_device       *nextDevice;
	void			*dmaStorage;
	u8			*padBuffer;
	TLanList                *rxList;
	u8			*rxBuffer;
	u32                     rxHead;
	u32                     rxTail;
	u32			rxEocCount;
	TLanList                *txList;
	u8			*txBuffer;
	u32                     txHead;
	u32                     txInProgress;
	u32                     txTail;
	u32			txBusyCount;
	u32                     phyOnline;
	u32			timerSetAt;
	u32			timerType;
	struct timer_list	timer;
	struct net_device_stats	stats;
	struct board		*adapter;
	u32			adapterRev;
	u32			aui;
	u32			debug;
	u32			duplex;
	u32			phy[2];
	u32			phyNum;
	u32			speed;
	u8			tlanRev;
	u8			tlanFullDuplex;
	char                    devName[8];
	spinlock_t		lock;
	u8			link;
	u8			is_eisa;
	struct tq_struct	tlan_tqueue;
	u8			neg_be_verbose;
} TLanPrivateInfo;

#define 	TLAN_HC_GO		0x80000000
#define		TLAN_HC_STOP		0x40000000
#define		TLAN_HC_ACK		0x20000000
#define		TLAN_HC_CS_MASK		0x1FE00000
#define		TLAN_HC_EOC		0x00100000
#define		TLAN_HC_RT		0x00080000
#define		TLAN_HC_NES		0x00040000
#define		TLAN_HC_AD_RST		0x00008000
#define		TLAN_HC_LD_TMR		0x00004000
#define		TLAN_HC_LD_THR		0x00002000
#define		TLAN_HC_REQ_INT		0x00001000
#define		TLAN_HC_INT_OFF		0x00000800
#define		TLAN_HC_INT_ON		0x00000400
#define		TLAN_HC_AC_MASK		0x000000FF
#define		TLAN_DA_ADR_INC		0x8000
#define		TLAN_DA_RAM_ADR		0x4000
#define		TLAN_HI_IV_MASK		0x1FE0
#define		TLAN_HI_IT_MASK		0x001C

#define		TLAN_NET_CMD_NRESET	0x80
#define		TLAN_NET_CMD_NWRAP	0x40
#define		TLAN_NET_CMD_CSF	0x20
#define		TLAN_NET_CMD_CAF	0x10
#define		TLAN_NET_CMD_NOBRX	0x08
#define		TLAN_NET_CMD_DUPLEX	0x04
#define		TLAN_NET_CMD_TRFRAM	0x02
#define		TLAN_NET_CMD_TXPACE	0x01
#define 	TLAN_NET_SIO_MINTEN	0x80
#define		TLAN_NET_SIO_ECLOK	0x40
#define		TLAN_NET_SIO_ETXEN	0x20
#define		TLAN_NET_SIO_EDATA	0x10
#define		TLAN_NET_SIO_NMRST	0x08
#define		TLAN_NET_SIO_MCLK	0x04
#define		TLAN_NET_SIO_MTXEN	0x02
#define		TLAN_NET_SIO_MDATA	0x01
#define		TLAN_NET_STS_MIRQ	0x80
#define		TLAN_NET_STS_HBEAT	0x40
#define		TLAN_NET_STS_TXSTOP	0x20
#define		TLAN_NET_STS_RXSTOP	0x10
#define		TLAN_NET_STS_RSRVD	0x0F
#define		TLAN_NET_MASK_MASK7	0x80
#define		TLAN_NET_MASK_MASK6	0x40
#define		TLAN_NET_MASK_MASK5	0x20
#define		TLAN_NET_MASK_MASK4	0x10
#define		TLAN_NET_MASK_RSRVD	0x0F
#define 	TLAN_NET_CFG_RCLK	0x8000
#define		TLAN_NET_CFG_TCLK	0x4000
#define		TLAN_NET_CFG_BIT	0x2000
#define		TLAN_NET_CFG_RXCRC	0x1000
#define		TLAN_NET_CFG_PEF	0x0800
#define		TLAN_NET_CFG_1FRAG	0x0400
#define		TLAN_NET_CFG_1CHAN	0x0200
#define		TLAN_NET_CFG_MTEST	0x0100
#define		TLAN_NET_CFG_PHY_EN	0x0080
#define		TLAN_NET_CFG_MSMASK	0x007F
#define		TLAN_LED_ACT		0x10
#define		TLAN_LED_LINK		0x01
#define		TLAN_ID_TX_EOC		0x04
#define		TLAN_ID_RX_EOF		0x02
#define		TLAN_ID_RX_EOC		0x01

#define CIRC_INC( a, b ) if ( ++a >= b ) a = 0

#ifdef I_LIKE_A_FAST_HASH_FUNCTION
/* given 6 bytes, view them as 8 6-bit numbers and return the XOR of those */
/* the code below is about seven times as fast as the original code */
inline u32 TLan_HashFunc( u8 *a )
{
        u8     hash;

        hash = (a[0]^a[3]);             /* & 077 */
        hash ^= ((a[0]^a[3])>>6);       /* & 003 */
        hash ^= ((a[1]^a[4])<<2);       /* & 074 */
        hash ^= ((a[1]^a[4])>>4);       /* & 017 */
        hash ^= ((a[2]^a[5])<<4);       /* & 060 */
        hash ^= ((a[2]^a[5])>>2);       /* & 077 */

        return (hash & 077);
}

#else /* original code */

inline	u32	xor( u32 a, u32 b )
{
	return ( ( a && ! b ) || ( ! a && b ) );
}
#define XOR8( a, b, c, d, e, f, g, h )	xor( a, xor( b, xor( c, xor( d, xor( e, xor( f, xor( g, h ) ) ) ) ) ) )
#define DA( a, bit )					( ( (u8) a[bit/8] ) & ( (u8) ( 1 << bit%8 ) ) )

inline u32 TLan_HashFunc( u8 *a )
{
	u32	hash;

	hash  = XOR8( DA(a,0), DA(a, 6), DA(a,12), DA(a,18), DA(a,24), DA(a,30), DA(a,36), DA(a,42) );
	hash |= XOR8( DA(a,1), DA(a, 7), DA(a,13), DA(a,19), DA(a,25), DA(a,31), DA(a,37), DA(a,43) ) << 1;
	hash |= XOR8( DA(a,2), DA(a, 8), DA(a,14), DA(a,20), DA(a,26), DA(a,32), DA(a,38), DA(a,44) ) << 2;
	hash |= XOR8( DA(a,3), DA(a, 9), DA(a,15), DA(a,21), DA(a,27), DA(a,33), DA(a,39), DA(a,45) ) << 3;
	hash |= XOR8( DA(a,4), DA(a,10), DA(a,16), DA(a,22), DA(a,28), DA(a,34), DA(a,40), DA(a,46) ) << 4;
	hash |= XOR8( DA(a,5), DA(a,11), DA(a,17), DA(a,23), DA(a,29), DA(a,35), DA(a,41), DA(a,47) ) << 5;

	return hash;

} 

#endif /* I_LIKE_A_FAST_HASH_FUNCTION */
#endif
/*******************************************************************************
 *
 *  Linux ThunderLAN Driver
 *
 *  tlan.c
 *  by James Banks
 *
 *  (C) 1997-1998 Caldera, Inc.
 *  (C) 1998 James Banks
 *  (C) 1999-2001 Torben Mathiasen
 *
 *  This software may be used and distributed according to the terms
 *  of the GNU General Public License, incorporated herein by reference.
 *
 ** This file is best viewed/edited with columns>=132.
 *
 ** Useful (if not required) reading:
 *
 *		Texas Instruments, ThunderLAN Programmer's Guide,
 *			TI Literature Number SPWU013A
 *			available in PDF format from www.ti.com
 *		Level One, LXT901 and LXT970 Data Sheets
 *			available in PDF format from www.level1.com
 *		National Semiconductor, DP83840A Data Sheet
 *			available in PDF format from www.national.com
 *		Microchip Technology, 24C01A/02A/04A Data Sheet
 *			available in PDF format from www.microchip.com
 *
 * Change History
 *
 *	Tigran Aivazian <[e-mail]>:	TLan_PciProbe() now uses
 *						new PCI BIOS interface.
 *	Alan Cox	<[e-mail]>:	Fixed the out of memory
 *						handling.
 *      
 *	Torben Mathiasen <[e-mail]> New Maintainer!
 *
 *	v1.1 Dec 20, 1999    - Removed linux version checking
 *			       Patch from Tigran Aivazian. 
 *			     - v1.1 includes Alan's SMP updates.
 *			     - We still have problems on SMP though,
 *			       but I'm looking into that. 
 *			
 *	v1.2 Jan 02, 2000    - Hopefully fixed the SMP deadlock.
 *			     - Removed dependency of HZ being 100.
 *			     - We now allow higher priority timers to 
 *			       overwrite timers like TLAN_TIMER_ACTIVITY
 *			       Patch from John Cagle <[e-mail]>.
 *			     - Fixed a few compiler warnings.
 *
 *	v1.3 Feb 04, 2000    - Fixed the remaining HZ issues.
 *			     - Removed call to pci_present(). 
 *			     - Removed SA_INTERRUPT flag from irq handler.
 *			     - Added __init and __initdata to reduce resisdent 
 *			       code size.
 *			     - Driver now uses module_init/module_exit.
 *			     - Rewrote init_module and tlan_probe to
 *			       share a lot more code. We now use tlan_probe
 *			       with builtin and module driver.
 *			     - Driver ported to new net API. 
 *			     - tlan.txt has been reworked to reflect current 
 *			       driver (almost)
 *			     - Other minor stuff
 *
 *	v1.4 Feb 10, 2000    - Updated with more changes required after Dave's
 *	                       network cleanup in 2.3.43pre7 (Tigran & myself)
 *	                     - Minor stuff.
 *
 *	v1.5 March 22, 2000  - Fixed another timer bug that would hang the driver
 *			       if no cable/link were present.
 *			     - Cosmetic changes.
 *			     - TODO: Port completely to new PCI/DMA API
 *			     	     Auto-Neg fallback.
 *
 * 	v1.6 April 04, 2000  - Fixed driver support for kernel-parameters. Haven't
 * 			       tested it though, as the kernel support is currently 
 * 			       broken (2.3.99p4p3).
 * 			     - Updated tlan.txt accordingly.
 * 			     - Adjusted minimum/maximum frame length.
 * 			     - There is now a TLAN website up at 
 * 			       http://tlan.kernel.dk
 *
 * 	v1.7 April 07, 2000  - Started to implement custom ioctls. Driver now
 * 			       reports PHY information when used with Donald
 * 			       Beckers userspace MII diagnostics utility.
 *
 * 	v1.8 April 23, 2000  - Fixed support for forced speed/duplex settings.
 * 			     - Added link information to Auto-Neg and forced
 * 			       modes. When NIC operates with auto-neg the driver
 * 			       will report Link speed & duplex modes as well as
 * 			       link partner abilities. When forced link is used,
 * 			       the driver will report status of the established
 * 			       link.
 * 			       Please read tlan.txt for additional information. 
 * 			     - Removed call to check_region(), and used 
 * 			       return value of request_region() instead.
 *	
 *	v1.8a May 28, 2000   - Minor updates.
 *
 *	v1.9 July 25, 2000   - Fixed a few remaining Full-Duplex issues.
 *	                     - Updated with timer fixes from Andrew Morton.
 *	                     - Fixed module race in TLan_Open.
 *	                     - Added routine to monitor PHY status.
 *	                     - Added activity led support for Proliant devices.
 *
 *	v1.10 Aug 30, 2000   - Added support for EISA based tlan controllers 
 *			       like the Compaq NetFlex3/E. 
 *			     - Rewrote tlan_probe to better handle multiple
 *			       bus probes. Probing and device setup is now
 *			       done through TLan_Probe and TLan_init_one. Actual
 *			       hardware probe is done with kernel API and 
 *			       TLan_EisaProbe.
 *			     - Adjusted debug information for probing.
 *			     - Fixed bug that would cause general debug information 
 *			       to be printed after driver removal. 
 *			     - Added transmit timeout handling.
 *			     - Fixed OOM return values in tlan_probe. 
 *			     - Fixed possible mem leak in tlan_exit 
 *			       (now tlan_remove_one).
 *			     - Fixed timer bug in TLan_phyMonitor.
 *			     - This driver version is alpha quality, please
 *			       send me any bug issues you may encounter.
 *
 *	v1.11 Aug 31, 2000   - Do not try to register irq 0 if no irq line was 
 *			       set for EISA cards.
 *			     - Added support for NetFlex3/E with nibble-rate
 *			       10Base-T PHY. This is untestet as I haven't got
 *			       one of these cards.
 *			     - Fixed timer being added twice.
 *			     - Disabled PhyMonitoring by default as this is
 *			       work in progress. Define MONITOR to enable it.
 *			     - Now we don't display link info with PHYs that
 *			       doesn't support it (level1).
 *			     - Incresed tx_timeout beacuse of auto-neg.
 *			     - Adjusted timers for forced speeds.
 *
 *	v1.12 Oct 12, 2000   - Minor fixes (memleak, init, etc.)
 *
 * 	v1.13 Nov 28, 2000   - Stop flooding console with auto-neg issues
 * 			       when link can't be established.
 *			     - Added the bbuf option as a kernel parameter.
 *			     - Fixed ioaddr probe bug.
 *			     - Fixed stupid deadlock with MII interrupts.
 *			     - Added support for speed/duplex selection with 
 *			       multiple nics.
 *			     - Added partly fix for TX Channel lockup with
 *			       TLAN v1.0 silicon. This needs to be investigated
 *			       further.
 *
 * 	v1.14 Dec 16, 2000   - Added support for servicing multiple frames per.
 * 			       interrupt. Thanks goes to
 * 			       Adam Keys <[e-mail]>
 * 			       Denis Beaudoin <[e-mail]>
 * 			       for providing the patch.
 * 			     - Fixed auto-neg output when using multiple
 * 			       adapters.
 * 			     - Converted to use new taskq interface.
 *
 * 	v1.14a Jan 6, 2001   - Minor adjustments (spinlocks, etc.)
 *
 *******************************************************************************/

                                                                                
#include <linux/module.h>

#include "tlan.h"

#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/mii.h>