path: root/drivers/net/smc9194.c

/*------------------------------------------------------------------------
 . smc9194.c
 . This is a driver for SMC's 9000 series of Ethernet cards.
 .
 . Copyright (C) 1996 by Erik Stahlman
 . This software may be used and distributed according to the terms
 . of the GNU General Public License, incorporated herein by reference.
 .
 . "Features" of the SMC chip:
 .   4608 byte packet memory. ( for the 91C92.  Others have more )
 .   EEPROM for configuration
 .   AUI/TP selection  ( mine has 10Base2/10BaseT select )
 .
 . Arguments:
 . 	io		 = for the base address
 .	irq	 = for the IRQ
 .	ifport = 0 for autodetect, 1 for TP, 2 for AUI ( or 10base2 )
 .
 . author:
 . 	Erik Stahlman				( erik@vt.edu )
 . contributors:
 .      Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 .
 . Hardware multicast code from Peter Cammaert ( pc@denkart.be )
 .
 . Sources:
 .    o   SMC databook
 .    o   skeleton.c by Donald Becker ( becker@scyld.com )
 .    o   ( a LOT of advice from Becker as well )
 .
 . History:
 .	12/07/95  Erik Stahlman  written, got receive/xmit handled
 . 	01/03/96  Erik Stahlman  worked out some bugs, actually usable!!! :-)
 .	01/06/96  Erik Stahlman	 cleaned up some, better testing, etc
 .	01/29/96  Erik Stahlman	 fixed autoirq, added multicast
 . 	02/01/96  Erik Stahlman	 1. disabled all interrupts in smc_reset
 .		   		 2. got rid of post-decrementing bug -- UGH.
 .	02/13/96  Erik Stahlman  Tried to fix autoirq failure.  Added more
 .				 descriptive error messages.
 .	02/15/96  Erik Stahlman  Fixed typo that caused detection failure
 . 	02/23/96  Erik Stahlman	 Modified it to fit into kernel tree
 .				 Added support to change hardware address
 .				 Cleared stats on opens
 .	02/26/96  Erik Stahlman	 Trial support for Kernel 1.2.13
 .				 Kludge for automatic IRQ detection
 .	03/04/96  Erik Stahlman	 Fixed kernel 1.3.70 +
 .				 Fixed bug reported by Gardner Buchanan in
 .				   smc_enable, with outw instead of outb
 .	03/06/96  Erik Stahlman  Added hardware multicast from Peter Cammaert
 .	04/14/00  Heiko Pruessing (SMA Regelsysteme)  Fixed bug in chip memory
 .				 allocation
 .      08/20/00  Arnaldo Melo   fix kfree(skb) in smc_hardware_send_packet
 .      12/15/00  Christian Jullien fix "Warning: kfree_skb on hard IRQ"
 .      11/08/01 Matt Domsch     Use common crc32 function
 ----------------------------------------------------------------------------*/

static const char version[] =
	"smc9194.c:v0.14 12/15/00 by Erik Stahlman (erik@vt.edu)\n";

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/crc32.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>

#include <asm/io.h>

#include "smc9194.h"

#define DRV_NAME "smc9194"

/*------------------------------------------------------------------------
 .
 . Configuration options, for the experienced user to change.
 .
 -------------------------------------------------------------------------*/

/*
 . Do you want to use 32 bit xfers?  This should work on all chips, as
 . the chipset is designed to accommodate them.
*/
#ifdef __sh__
#undef USE_32_BIT
#else
#define USE_32_BIT 1
#endif

#if defined(__H8300H__) || defined(__H8300S__)
#define NO_AUTOPROBE
#undef insl
#undef outsl
#define insl(a,b,l)  io_insl_noswap(a,b,l)
#define outsl(a,b,l) io_outsl_noswap(a,b,l)
#endif

/*
 .the SMC9194 can be at any of the following port addresses.  To change,
 .for a slightly different card, you can add it to the array.  Keep in
 .mind that the array must end in zero.
*/

struct devlist {
	unsigned int port;
	unsigned int irq;
};

#if defined(CONFIG_H8S_EDOSK2674)
static struct devlist smc_devlist[] __initdata = {
	{.port = 0xf80000, .irq = 16},
	{.port = 0,        .irq = 0 },
};
#else
static struct devlist smc_devlist[] __initdata = {
	{.port = 0x200, .irq = 0},
	{.port = 0x220, .irq = 0},
	{.port = 0x240, .irq = 0},
	{.port = 0x260, .irq = 0},
	{.port = 0x280, .irq = 0},
	{.port = 0x2A0, .irq = 0},
	{.port = 0x2C0, .irq = 0},
	{.port = 0x2E0, .irq = 0},
	{.port = 0x300, .irq = 0},
	{.port = 0x320, .irq = 0},
	{.port = 0x340, .irq = 0},
	{.port = 0x360, .irq = 0},
	{.port = 0x380, .irq = 0},
	{.port = 0x3A0, .irq = 0},
	{.port = 0x3C0, .irq = 0},
	{.port = 0x3E0, .irq = 0},
	{.port = 0,     .irq = 0},
};
#endif
/*
 . Wait time for memory to be free.  This probably shouldn't be
 . tuned that much, as waiting for this means nothing else happens
 . in the system
*/
#define MEMORY_WAIT_TIME 16

/*
 . DEBUGGING LEVELS
 .
 . 0 for normal operation
 . 1 for slightly more details
 . >2 for various levels of increasingly useless information
 .    2 for interrupt tracking, status flags
 .    3 for packet dumps, etc.
*/
#define SMC_DEBUG 0

#if (SMC_DEBUG > 2 )
#define PRINTK3(x) printk x
#else
#define PRINTK3(x)
#endif

#if SMC_DEBUG > 1
#define PRINTK2(x) printk x
#else
#define PRINTK2(x)
#endif