/**********************************************************************************
* $Header$
*
* Ported by Rosimildo da Silva.
* ConnectTel,Inc.
* e-mail: rdasilva@connecttel.com
*
* MODULE DESCRIPTION:
* RTEMS driver for 3COM 3C509 Ethernet Card.
* The driver has been tested on PC with a single network card.
*
*
* This driver was based on the FreeBSD implementation( if_ep.c ) of the 3c5x9
* family and on the network framework of the RTEMS network driver.
* ( WD80x3 by Eric Norum ).
* See notes below:
*
******************************************************************************
* Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Herb Peyerl.
* 4. The name of Herb Peyerl may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*******************************************************************************
*
* RTEMS driver for M68360 WD1 Ethernet
*
* W. Eric Norum
* Saskatchewan Accelerator Laboratory
* University of Saskatchewan
* Saskatoon, Saskatchewan, CANADA
* eric@skatter.usask.ca
*******************************************************************************
*
*
* MODIFICATION/HISTORY:
* $Log$
* Revision 1.2 1999/12/13 21:21:31 joel
* Warning removal patch from Philip A. Prindeville <philipp@zembu.com>.
*
* Revision 1.1 1999/05/14 16:23:42 joel
* Added 3COM 3C509 driver from Rosimildo DaSilva <rdasilva@connecttel.com>.
*
*
**********************************************************************************/
#include <bsp.h>
#include <stdio.h>
#include <stdarg.h>
#include <rtems/error.h>
#include <rtems/rtems_bsdnet.h>
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/sockio.h>
#include <sys/libkern.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <irq.h>
/* Local includes */
#include "3c509.h"
#include "elink.h"
/* #define ET_MINLEN 60 */ /* minimum message length */
/*
* Number of WDs supported by this driver
*/
#define NWDDRIVER 1
/*
* Default number of buffer descriptors set aside for this driver.
* The number of transmit buffer descriptors has to be quite large
* since a single frame often uses four or more buffer descriptors.
*/
/*
#define RX_BUF_COUNT 15
#define TX_BUF_COUNT 4
#define TX_BD_PER_BUF 4
*/
/*
* RTEMS event used by interrupt handler to signal driver tasks.
* This must not be any of the events used by the network task synchronization.
*/
#define INTERRUPT_EVENT RTEMS_EVENT_1
/*
* RTEMS event used to start transmit daemon.
* This must not be the same as INTERRUPT_EVENT.
*/
#define START_TRANSMIT_EVENT RTEMS_EVENT_2
/*
* Receive buffer size -- Allow for a full ethernet packet including CRC
*/
/*
#define RBUF_SIZE 1520
#if (MCLBYTES < RBUF_SIZE)
# error "Driver must have MCLBYTES > RBUF_SIZE"
#endif
*/
/* network driver name */
#define NET_DRIVER_NAME "ep"
/*
* Per device structure.
*
* XXX Note: id_conflicts should either become an array of things we're
* specifically allowed to conflict with or be subsumed into some
* more powerful mechanism for detecting and dealing with multiple types
* of non-fatal conflict. -jkh XXX
*/
struct isa_device
{
int id_id; /* device id */
int id_unit; /* unit number */
int id_iobase; /* base i/o address */
u_int id_irq; /* interrupt request */
};
struct ep_board
{
int epb_addr; /* address of this board */
char epb_used; /* was this entry already used for configuring ? */
/* data from EEPROM for later use */
u_short eth_addr[3]; /* Ethernet address */
u_short prod_id; /* product ID */
u_short res_cfg; /* resource configuration */
};
/*
* Ethernet software status per interface.
*/
struct ep_softc
{
struct arpcom arpcom; /* Ethernet common part */
int ep_io_addr; /* i/o bus address */
struct mbuf *top, *mcur;
short cur_len;
u_short ep_connectors; /* Connectors on this card. */
u_char ep_connector; /* Configured connector. */
int stat; /* some flags */
struct ep_board *epb;
int unit;
rtems_irq_connect_data irqInfo;
rtems_id rxDaemonTid;
rtems_id txDaemonTid;
int acceptBroadcast;
short tx_underrun;
short rx_no_first;
short rx_no_mbuf;
short rx_bpf_disc;
short rx_overrunf;
short rx_overrunl;
};
/* static unsigned long loopc; */
static volatile unsigned long overrun;
static volatile unsigned long resend;
static struct ep_softc ep_softc[ NWDDRIVER ];
static struct isa_device isa_dev[ NWDDRIVER ] =
{
{ 0, /* device id */
0, /* unit number */
-1, /* base i/o address ??? */
0 /* interrupt request ??? */
}
};
static u_long ep_unit;
static int ep_boards;
struct ep_board ep_board[ EP_MAX_BOARDS + 1];
static int ep_current_tag = EP_LAST_TAG + 1;
static char *ep_conn_type[] = {"UTP", "AUI", "???", "BNC"};
#define ep_ftst(f) (sc->stat&(f))
#define ep_fset(f) (sc->stat|=(f))
#define ep_frst(f) (sc->stat&=~(f))
/* forward declarations for functions */
static int ep_attach( struct ep_softc *sc );
static int ep_isa_probe( struct isa_device *is );
static void epinit( struct ep_softc *sc );
static void epread( register struct ep_softc *sc );
static void epstart( struct ifnet *ifp );
static void epread( register struct ep_softc *sc );
static int ep_isa_attach( struct isa_device *is );
static int get_eeprom_data( int id_port, int offset );
static void ep_intr( struct ep_softc *sc );
/* external functions */
extern void Wait_X_ms( unsigned int timeToWait ); /* timer.c ??? */
/**********************************************************************************
*
* DESCRIPTION: Writes a buffer of data to the I/O port. The data is sent to the
* port as 32 bits units( 4 bytes ).
*
* RETURNS: nothing.
*
**********************************************************************************/
static __inline void outsl( unsigned short io_addr, unsigned char *out_data, int len )
{
u_long *pl = ( u_long *)out_data;
while( len-- )
{
outport_long( io_addr, *pl );
pl++;
}
}
/**********************************************************************************
*
* DESCRIPTION: Writes a buffer of data to the I/O port. The data is sent to the
* port as 16 bits units( 2 bytes ).
*
* RETURNS:
*
**********************************************************************************/
static __inline void outsw( unsigned short io_addr, unsigned char *out_data, int len )
{
u_short *ps = ( u_short *)out_data;
while( len-- )
{
outport_word( io_addr, *ps );
ps++;
}
}
/**********************************************************************************
*
* DESCRIPTION: Writes a buffer of data to the I/O port. The data is sent to the
* port as 8 bits units( 1 byte ).
*
* RETURNS: nothing
*
**********************************************************************************/
static __inline void outsb( unsigned short io_addr, unsigned char *out_data, int len )
{
while( len-- )
{
outport_byte( io_addr, *out_data );
out_data++;
}
}
/**********************************************************************************
*
* DESCRIPTION: Read a buffer of data from an I/O port. The data is read as 16 bits
* units or 2 bytes.
*
* RETURNS: nothing.
*
**********************************************************************************/
static __inline void insw( unsigned short io_addr, unsigned char *in_data, int len )
{
u_short *ps = ( u_short *)in_data;
while( len-- )
{
inport_word( io_addr, *ps );
ps++;
}
}
/**********************************************************************************
*
* DESCRIPTION: Read a buffer of data from an I/O port. The data is read as 32 bits
* units or 4 bytes.
*
* RETURNS: nothing.
*
**********************************************************************************/
static __inline void insl( unsigned short io_addr, unsigned char *in_data, int len )
{
u_long *pl = ( u_long *)in_data;
while( len-- )
{
inport_long( io_addr, *pl );
pl++;
}
}
/**********************************************************************************
*
* DESCRIPTION: Read a buffer of data from an I/O port. The data is read as 8 bits
* units or 1 bytes.
*
* RETURNS: nothing.
*
**********************************************************************************/
static __inline void insb( unsigned short io_addr, unsigned char *in_data, int len )
{
while( len-- )
{
inport_byte( io_addr, *in_data++ );
}
}
/**********************************************************************************
*
* DESCRIPTION: Writes a word to the I/O port.
*
* RETURNS: nothing.
*
**********************************************************************************/
/*
* Routine to output a word as defined in FreeBSD.
*/
static __inline void outw( unsigned short io_addr, unsigned short out_data )
{
outport_word( io_addr, out_data );
}
/**********************************************************************************
*
* DESCRIPTION: Routine to read a word as defined in FreeBSD.
*
* RETURNS: nothing
*
**********************************************************************************/
static __inline unsigned short inw( unsigned short io_addr )
{
unsigned short in_data;
inport_word( io_addr, in_data );
return in_data;
}
/**********************************************************************************
*
* DESCRIPTION: Routine to output a word as defined in FreeBSD.
*
* RETURNS: nothing.
*
**********************************************************************************/
void __inline outb( unsigned short io_addr, unsigned char out_data )
{
outport_byte( io_addr, out_data );
}
/**********************************************************************************
*
* DESCRIPTION: Routine to read a word as defined in FreeBSD.
*
* RETURNS: byte read.
*
**********************************************************************************/
static __inline unsigned char inb( unsigned short io_addr )
{
unsigned char in_data;
inport_byte( io_addr, in_data );
return in_data;
}
/**********************************************************************************
*
* DESCRIPTION:
* We get eeprom data from the id_port given an offset into the eeprom.
* Basically; after the ID_sequence is sent to all of the cards; they enter
* the ID_CMD state where they will accept command requests. 0x80-0xbf loads
* the eeprom data. We then read the port 16 times and with every read; the
* cards check for contention (ie: if one card writes a 0 bit and another
* writes a 1 bit then the host sees a 0. At the end of the cycle; each card
* compares the data on the bus; if there is a difference then that card goes
* into ID_WAIT state again). In the meantime; one bit of data is returned in
* the AX register which is conveniently returned to us by inb(). Hence; we
* read 16 times getting one bit of data with each read.
*
* RETURNS: 16 bit word from the EEPROM
*
**********************************************************************************/
static int get_eeprom_data( int id_port, int offset )
{
int i, data = 0;
outb(id_port, 0x80 + offset);
Wait_X_ms( 1 );
for (i = 0; i < 16; i++)
data = (data << 1) | (inw(id_port) & 1);
return( data );
}
/**********************************************************************************
*
* DESCRIPTION: Waits until the EEPROM of the card is ready to be accessed.
*
* RETURNS: 0 - not ready; 1 - ok
*
**********************************************************************************/
static int eeprom_rdy( struct ep_softc *sc )
{
int i;
for (i = 0; is_eeprom_busy(BASE) && i < MAX_EEPROMBUSY; i++)
continue;
if (i >= MAX_EEPROMBUSY)
{
printf("ep%d: eeprom failed to come ready.\n", sc->unit);
return (0);
}
return (1);
}
/**********************************************************************************
*
* DESCRIPTION:
* get_e: gets a 16 bits word from the EEPROM.
* We must have set the window before call this routine.
*
* RETURNS: data from EEPROM
*
**********************************************************************************/
u_short get_e( struct ep_softc *sc, int offset )
{
if( !eeprom_rdy(sc) )
return (0xffff);
outw(BASE + EP_W0_EEPROM_COMMAND, EEPROM_CMD_RD | offset );
if( !eeprom_rdy(sc) )
return( 0xffff );
return( inw( BASE + EP_W0_EEPROM_DATA ) );
}
/**********************************************************************************
*
* DESCRIPTION:
* Driver interrupt handler. This routine is called by the RTEMS kernel when this
* interrupt is raised.
*
* RETURNS: nothing.
*
**********************************************************************************/
static rtems_isr ap_interrupt_handler( rtems_vector_number v )
{
struct ep_softc *sc = (struct ep_softc *)&ep_softc[ 0 ];
/* de-activate any pending interrrupt, and sent and event to interrupt task
* to process all events required by this interrupt.
*/
outw( BASE + EP_COMMAND, SET_INTR_MASK ); /* disable all Ints */
rtems_event_send( sc->rxDaemonTid, INTERRUPT_EVENT );
}
/**********************************************************************************
*
* DESCRIPTION:
*
* RETURNS:
*
**********************************************************************************/
static void nopOn(const rtems_irq_connect_data* notUsed)
{
/* does nothing */
}
/**********************************************************************************
*
* DESCRIPTION:
*
* RETURNS:
*
**********************************************************************************/
static int _3c509_IsOn(const rtems_irq_connect_data* irq)
{
return BSP_irq_enabled_at_i8259s (irq->name);
}
/**********************************************************************************
*
* DESCRIPTION:
* Initializes the ethernet hardware.
*
* RETURNS: nothing.
*
**********************************************************************************/
static void _3c509_initialize_hardware (struct ep_softc *sc)
{
rtems_status_code st;
epinit( sc );
/*
* Set up interrupts
*/
sc->irqInfo.hdl = ( rtems_irq_hdl )ap_interrupt_handler;
sc->irqInfo.on = nopOn;
sc->irqInfo.off = nopOn;
sc->irqInfo.isOn = _3c509_IsOn;
printf ("3c509: IRQ with Kernel: %d\n", sc->irqInfo.name );
st = BSP_install_rtems_irq_handler( &sc->irqInfo );
if( !st )
{
rtems_panic ("Can't attach WD interrupt handler for irq %d\n", sc->irqInfo.name );
}
}
/**********************************************************************************
*
* DESCRIPTION: Driver interrupt daemon.
*
* RETURNS: nothing.
*
**********************************************************************************/
static void _3c509_rxDaemon (void *arg)
{
struct ep_softc *dp = (struct ep_softc *)&ep_softc[ 0 ];
rtems_event_set events;
printf ("3C509: RX Daemon is starting.\n");
for( ;; )
{
/* printk( "R-" ); */
rtems_bsdnet_event_receive( INTERRUPT_EVENT,
RTEMS_WAIT | RTEMS_EVENT_ANY,
RTEMS_NO_TIMEOUT,
&events );
/* printk( "R+" ); */
ep_intr( dp );
epstart( &dp->arpcom.ac_if );
}
printf ("3C509: RX Daemon is finishing.\n");
}
/**********************************************************************************
*
* DESCRIPTION: Driver transmit daemon
*
* RETURNS:
*
**********************************************************************************/
static void _3c509_txDaemon (void *arg)
{
struct ep_softc *sc = (struct ep_softc *)&ep_softc[0];
struct ifnet *ifp = &sc->arpcom.ac_if;
rtems_event_set events;
printf ("3C509: TX Daemon is starting.\n");
for( ;; )
{
/*
* Wait for packet
*/
/* printk( "T-\n" ); */
rtems_bsdnet_event_receive( START_TRANSMIT_EVENT,
RTEMS_EVENT_ANY | RTEMS_WAIT,
RTEMS_NO_TIMEOUT,
&events );
/* printk( "T+\n" ); */
epstart( ifp );
while( ifp->if_flags & IFF_OACTIVE )
epstart( ifp );
}
printf ("3C509: TX Daemon is finishing.\n");
}
/**********************************************************************************
*
* DESCRIPTION: Activates the trabsmitter task...
*
* RETURNS: nothing.
*
**********************************************************************************/
static void _3c509_start (struct ifnet *ifp)
{
struct ep_softc *sc = ifp->if_softc;
/* printk ("S"); */
ifp->if_flags |= IFF_OACTIVE;
rtems_event_send( sc->txDaemonTid, START_TRANSMIT_EVENT );
}
/**********************************************************************************
*
* DESCRIPTION: Initialize and start the device
*
* RETURNS:
*
**********************************************************************************/
static void _3c509_init (void *arg)
{
struct ep_softc *sc = arg;
struct ifnet *ifp = &sc->arpcom.ac_if;
printf ("3C509: Initialization called.\n");
if (sc->txDaemonTid == 0) {
/*
* Set up WD hardware
*/
_3c509_initialize_hardware (sc);
printf ("3C509: starting network driver tasks..\n");
/*
* Start driver tasks
*/
sc->txDaemonTid = rtems_bsdnet_newproc ("APtx", 4096, _3c509_txDaemon, sc);
sc->rxDaemonTid = rtems_bsdnet_newproc ("APrx", 4096, _3c509_rxDaemon, sc);
}
/*
* Tell the world that we're running.
*/
ifp->if_flags |= IFF_RUNNING;
}
/**********************************************************************************
*
* DESCRIPTION: Stop the device
*
* RETURNS:
*
**********************************************************************************/
static void _3c509_stop (struct ep_softc *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
ifp->if_flags &= ~IFF_RUNNING;
printf ("3C509: stop() called.\n");
/*
* Stop the transmitter
*/
outw(BASE + EP_COMMAND, RX_DISABLE);
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, TX_DISABLE);
outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
outw(BASE + EP_COMMAND, RX_RESET);
outw(BASE + EP_COMMAND, TX_RESET);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
outw(BASE + EP_COMMAND, C_INTR_LATCH);
outw(BASE + EP_COMMAND, SET_RD_0_MASK);
outw(BASE + EP_COMMAND, SET_INTR_MASK);
outw(BASE + EP_COMMAND, SET_RX_FILTER);
}
/**********************************************************************************
*
* DESCRIPTION: Show interface statistics
*
* RETURNS: nothing.
*
**********************************************************************************/
static void _3c509_stats (struct ep_softc *sc)
{
struct ifnet *ifp = &sc->arpcom.ac_if;
printf ("3C509: stats() called.\n");
printf("\tStat: %x\n", sc->stat);
printf("\tIpackets=%ld, Opackets=%ld\n", ifp->if_ipackets, ifp->if_opackets);
printf("\tNOF=%d, NOMB=%d, BPFD=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
sc->rx_no_first, sc->rx_no_mbuf, sc->rx_bpf_disc, sc->rx_overrunf,
sc->rx_overrunl, sc->tx_underrun );
}
/**********************************************************************************
*
* DESCRIPTION: Driver ioctl handler
*
* RETURNS:
*
**********************************************************************************/
static int _3c509_ioctl (struct ifnet *ifp, int command, caddr_t data)
{
struct ep_softc *sc = ifp->if_softc;
int error = 0;
printf ("3C509: ioctl() called.\n");
switch (command) {
case SIOCGIFADDR:
case SIOCSIFADDR:
ether_ioctl (ifp, command, data);
break;
case SIOCSIFFLAGS:
switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) {
case IFF_RUNNING:
_3c509_stop (sc);
break;
case IFF_UP:
_3c509_init (sc);
break;
case IFF_UP | IFF_RUNNING:
_3c509_stop (sc);
_3c509_init (sc);
break;
default:
break;
}
break;
case SIO_RTEMS_SHOW_STATS:
_3c509_stats( sc );
break;
/*
* FIXME: All sorts of multicast commands need to be added here!
*/
default:
error = EINVAL;
break;
}
return error;
}
/**********************************************************************************
*
* DESCRIPTION:
* Attaches this network driver to the system. This function is called by the network
* interface during the initialization of the system.
*
* RETURNS: - 1 - success; 0 - fail to initialize
*
**********************************************************************************/
int rtems_3c509_driver_attach (struct rtems_bsdnet_ifconfig *config )
{
struct ep_softc *sc;
struct ifnet *ifp;
int mtu;
int i;
printf ("3C509: attach() called.\n");
/*
* init some variables
*/
overrun = 0;
resend = 0;
ep_unit = 0;
ep_boards = 0;
/*
* Find a free driver
*/
for (i = 0 ; i < NWDDRIVER ; i++) {
sc = &ep_softc[i];
ifp = &sc->arpcom.ac_if;
if (ifp->if_softc == NULL)
break;
}
if (i >= NWDDRIVER)
{
printf ("Too many 3C509 drivers.\n");
return 0;
}
/*
* Process options
*/
if( config->hardware_address )
{
memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN);
}
else
{
/* set it to something ... */
memset (sc->arpcom.ac_enaddr, 0x08,ETHER_ADDR_LEN);
}
if (config->mtu)
mtu = config->mtu;
else
mtu = ETHERMTU;
if (config->irno)
sc->irqInfo.name = config->irno;
else
sc->irqInfo.name = 10;
if (config->port)
sc->ep_io_addr = config->port;
else
sc->ep_io_addr = 0x300;
sc->acceptBroadcast = !config->ignore_broadcast;
printf ("3C509: isa_probe() looking for a card...\n");
if( !ep_isa_probe( &isa_dev[ 0 ] ) )
{
printf ("3C509: isa_probe() fail to find a board.\n");
return 0;
}
/* A board has been found, so proceed with the installation of the driver */
ep_isa_attach( &isa_dev[ 0 ] );
/*
* Set up network interface values
*/
ifp->if_softc = sc;
ifp->if_unit = i;
ifp->if_name = NET_DRIVER_NAME;
ifp->if_mtu = mtu;
ifp->if_init = _3c509_init;
ifp->if_ioctl = _3c509_ioctl;
ifp->if_start = _3c509_start;
ifp->if_output = ether_output;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
if( ifp->if_snd.ifq_maxlen == 0 )
{
ifp->if_snd.ifq_maxlen = ifqmaxlen;
}
/*
* Attach the interface
*/
if_attach (ifp);
ether_ifattach (ifp);
printf ("3C509: attach() is complete.\n");
return 1;
}
/**********************************************************************************
*
* DESCRIPTION:
* This function looks for a 3COM card 3c5x9 in an isa bus. If a board is found, it
* returns a structure describing the caracteristics of the card. It returns zero when
* card can not be found.
*
* RETURNS: 0 - fail - could not find a card...
* <> description of the card.
*
**********************************************************************************/
static struct ep_board *ep_look_for_board_at( struct isa_device *is )
{
int data, i, j, id_port = ELINK_ID_PORT;
int count = 0;
if(ep_current_tag == (EP_LAST_TAG + 1) )
{
/* Come here just one time */
ep_current_tag--;
/* Look for the ISA boards. Init and leave them actived */
outb(id_port, 0);
outb(id_port, 0);
elink_idseq(0xCF);
elink_reset();
Wait_X_ms( 10 ); /* RPS: assuming delay in miliseconds */
for (i = 0; i < EP_MAX_BOARDS; i++)
{
outb(id_port, 0);
outb(id_port, 0);
elink_idseq(0xCF);
data = get_eeprom_data(id_port, EEPROM_MFG_ID);
if (data != MFG_ID)
break;
/* resolve contention using the Ethernet address */
for (j = 0; j < 3; j++)
get_eeprom_data(id_port, j);
/* and save this address for later use */
for (j = 0; j < 3; j++)
ep_board[ep_boards].eth_addr[j] = get_eeprom_data(id_port, j);
ep_board[ep_boards].res_cfg = get_eeprom_data(id_port, EEPROM_RESOURCE_CFG);
ep_board[ep_boards].prod_id = get_eeprom_data(id_port, EEPROM_PROD_ID);
ep_board[ep_boards].epb_used = 0;
#ifdef PC98
ep_board[ep_boards].epb_addr =
(get_eeprom_data(id_port, EEPROM_ADDR_CFG) & 0x1f) * 0x100 + 0x40d0;
#else
ep_board[ep_boards].epb_addr =
(get_eeprom_data(id_port, EEPROM_ADDR_CFG) & 0x1f) * 0x10 + 0x200;
if (ep_board[ep_boards].epb_addr > 0x3E0)
/* Board in EISA configuration mode */
continue;
#endif /* PC98 */
outb(id_port, ep_current_tag); /* tags board */
outb(id_port, ACTIVATE_ADAPTER_TO_CONFIG);
ep_boards++;
count++;
ep_current_tag--;
}
ep_board[ep_boards].epb_addr = 0;
if( count )
{
printf("%d 3C5x9 board(s) on ISA found at", count);
for (j = 0; ep_board[j].epb_addr; j++)
if( ep_board[j].epb_addr <= 0x3E0 )
printf(" 0x%x", ep_board[j].epb_addr );
printf("\n");
}
}
/* we have two cases:
*
* 1. Device was configured with 'port ?'
* In this case we search for the first unused card in list
*
* 2. Device was configured with 'port xxx'
* In this case we search for the unused card with that address
*
*/
if (IS_BASE == -1)
{ /* port? */
for (i = 0; ep_board[i].epb_addr && ep_board[i].epb_used; i++) ;
if (ep_board[i].epb_addr == 0)
return 0;
IS_BASE = ep_board[i].epb_addr;
ep_board[i].epb_used = 1;
return &ep_board[ i ];
}
else
{
for (i = 0; ep_board[i].epb_addr && ep_board[i].epb_addr != IS_BASE; i++ ) ;
if (ep_board[i].epb_used || ep_board[i].epb_addr != IS_BASE)
return 0;
if (inw(IS_BASE + EP_W0_EEPROM_COMMAND) & EEPROM_TST_MODE)
{
printf("ep%d: 3c5x9 at 0x%x in PnP mode. Disable PnP mode!\n",
is->id_unit, IS_BASE );
}
ep_board[i].epb_used = 1;
return &ep_board[i];
}
}
/**********************************************************************************
*
* DESCRIPTION:
* This routine checks if there card installed on the machine.
*
* RETURNS: 0 - no card founded.
* 16 - size of the IO range for the card.
*
**********************************************************************************/
static int ep_isa_probe( struct isa_device *is )
{
struct ep_softc *sc;
struct ep_board *epb;
u_short k;
/* try to find a 3COM 3c5x9 .... */
if( (epb = ep_look_for_board_at(is)) == 0 )
return (0);
sc = &ep_softc[ 0 ];
sc->ep_io_addr = epb->epb_addr;
sc->epb = epb;
/*
* The iobase was found and MFG_ID was 0x6d50. PROD_ID should be
* 0x9[0-f]50 (IBM-PC)
* 0x9[0-f]5[0-f] (PC-98)
*/
GO_WINDOW(0);
k = sc->epb->prod_id;
#ifdef PC98
if ((k & 0xf0f0) != (PROD_ID & 0xf0f0))
{
#else
if ((k & 0xf0ff) != (PROD_ID & 0xf0ff))
{
#endif
printf("ep_isa_probe: ignoring model %04x\n", k );
/* ep_unit--; */
return (0);
}
k = sc->epb->res_cfg;
k >>= 12;
/* Now we have two cases again:
*
* 1. Device was configured with 'irq?'
* In this case we use irq read from the board
*
* 2. Device was configured with 'irq xxx'
* In this case we set up the board to use specified interrupt
*
*/
if (is->id_irq == 0)
{ /* irq? */
is->id_irq = ( k == 2 ) ? 9 : k;
}
sc->stat = 0; /* 16 bit access */
/* By now, the adapter is already activated */
return (EP_IOSIZE); /* 16 bytes of I/O space used. */
}
/**********************************************************************************
*
* DESCRIPTION:
* This routine attaches this network driver and the network interface routines.
*
* RETURNS: 0 - failed to attach
* 1 - success
*
**********************************************************************************/
static int ep_isa_attach( struct isa_device *is )
{
struct ep_softc *sc = &ep_softc[ 0 ];
u_short config;
int irq;
sc->ep_connectors = 0;
config = inw( IS_BASE + EP_W0_CONFIG_CTRL );
if (config & IS_AUI)
{
sc->ep_connectors |= AUI;
}
if (config & IS_BNC)
{
sc->ep_connectors |= BNC;
}
if (config & IS_UTP)
{
sc->ep_connectors |= UTP;
}
if( !(sc->ep_connectors & 7) )
printf( "no connectors!" );
sc->ep_connector = inw(BASE + EP_W0_ADDRESS_CFG) >> ACF_CONNECTOR_BITS;
/*
* Write IRQ value to board
*/
irq = is->id_irq;
/* update the interrupt line number to registered with kernel */
sc->irqInfo.name = irq;
GO_WINDOW( 0 );
SET_IRQ( BASE, irq );
printf( "3C509: I/O=0x%x, IRQ=%d, CONNECTOR=%s, ",
sc->ep_io_addr, sc->irqInfo.name,ep_conn_type[ sc->ep_connector ] );
ep_attach( sc );
return 1;
}
/**********************************************************************************
*
* DESCRIPTION: Completes the initialization/attachement of the driver.
*
* RETURNS: 0 - ok.
*
**********************************************************************************/
static int ep_attach( struct ep_softc *sc )
{
u_short *p;
int i;
/*
* Setup the station address
*/
p = (u_short *) &sc->arpcom.ac_enaddr;
GO_WINDOW(2);
printf("ADDRESS=" );
for (i = 0; i < 3; i++)
{
p[i] = htons( sc->epb->eth_addr[i] );
outw( BASE + EP_W2_ADDR_0 + (i * 2), ntohs( p[i] ) );
printf("%04x ", (u_short)ntohs( p[i] ) );
}
printf("\n" );
sc->rx_no_first = sc->rx_no_mbuf =
sc->rx_bpf_disc = sc->rx_overrunf = sc->rx_overrunl =
sc->tx_underrun = 0;
ep_fset( F_RX_FIRST );
sc->top = sc->mcur = 0;
return 0;
}
/**********************************************************************************
*
* DESCRIPTION:
* Initializes the card.
* The order in here seems important. Otherwise we may not receive interrupts. ?!
*
* RETURNS: nothing.
*
**********************************************************************************/
static void epinit( struct ep_softc *sc )
{
register struct ifnet *ifp = &sc->arpcom.ac_if;
int i, j;
while( inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS ) ;
GO_WINDOW(0);
outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
GO_WINDOW(4);
outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP);
GO_WINDOW(0);
/* Disable the card */
outw(BASE + EP_W0_CONFIG_CTRL, 0);
/* Enable the card */
outw(BASE + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
GO_WINDOW(2);
/* Reload the ether_addr. */
for (i = 0; i < 6; i++)
outb(BASE + EP_W2_ADDR_0 + i, sc->arpcom.ac_enaddr[i]);
outw(BASE + EP_COMMAND, RX_RESET);
outw(BASE + EP_COMMAND, TX_RESET);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS);
/* Window 1 is operating window */
GO_WINDOW(1);
for (i = 0; i < 31; i++)
inb(BASE + EP_W1_TX_STATUS);
/* get rid of stray intr's */
outw(BASE + EP_COMMAND, ACK_INTR | 0xff);
outw(BASE + EP_COMMAND, SET_RD_0_MASK | S_5_INTS);
outw(BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS);
if (ifp->if_flags & IFF_PROMISC)
outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL |
FIL_GROUP | FIL_BRDCST | FIL_ALL);
else
outw(BASE + EP_COMMAND, SET_RX_FILTER | FIL_INDIVIDUAL | FIL_GROUP | FIL_BRDCST);
/*
* S.B.
*
* Now behavior was slightly changed:
*
* if any of flags link[0-2] is used and its connector is
* physically present the following connectors are used:
*
* link0 - AUI * highest precedence
* link1 - BNC
* link2 - UTP * lowest precedence
*
* If none of them is specified then
* connector specified in the EEPROM is used
* (if present on card or AUI if not).
*
*/
/* Set the xcvr. */
if (ifp->if_flags & IFF_LINK0 && sc->ep_connectors & AUI)
{
i = ACF_CONNECTOR_AUI;
}
else if (ifp->if_flags & IFF_LINK1 && sc->ep_connectors & BNC)
{
i = ACF_CONNECTOR_BNC;
}
else if (ifp->if_flags & IFF_LINK2 && sc->ep_connectors & UTP)
{
i = ACF_CONNECTOR_UTP;
}
else
{
i = sc->ep_connector;
}
GO_WINDOW(0);
j = inw(BASE + EP_W0_ADDRESS_CFG) & 0x3fff;
outw(BASE + EP_W0_ADDRESS_CFG, j | (i << ACF_CONNECTOR_BITS));
switch(i)
{
case ACF_CONNECTOR_UTP:
if (sc->ep_connectors & UTP)
{
GO_WINDOW(4);
outw(BASE + EP_W4_MEDIA_TYPE, ENABLE_UTP);
}
break;
case ACF_CONNECTOR_BNC:
if (sc->ep_connectors & BNC)
{
outw(BASE + EP_COMMAND, START_TRANSCEIVER);
Wait_X_ms( 1 );
}
break;
case ACF_CONNECTOR_AUI:
/* nothing to do */
break;
default:
printf("ep%d: strange connector type in EEPROM: assuming AUI\n", sc->unit);
break;
}
outw(BASE + EP_COMMAND, RX_ENABLE);
outw(BASE + EP_COMMAND, TX_ENABLE);
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE; /* just in case */
sc->rx_no_first = sc->rx_no_mbuf =
sc->rx_bpf_disc = sc->rx_overrunf = sc->rx_overrunl =
sc->tx_underrun = 0;
ep_fset(F_RX_FIRST);
if( sc->top )
{
m_freem( sc->top );
sc->top = sc->mcur = 0;
}
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
outw(BASE + EP_COMMAND, SET_TX_START_THRESH | 16);
/*
* Store up a bunch of mbuf's for use later. (MAX_MBS). First we free up
* any that we had in case we're being called from intr or somewhere
* else.
*/
GO_WINDOW(1);
}
static const char padmap[] = {0, 3, 2, 1};
/**********************************************************************************
*
* DESCRIPTION: Routine to transmit frames to the card.
*
* RETURNS: nothing.
*
**********************************************************************************/
static void epstart( struct ifnet *ifp )
{
register struct ep_softc *sc = ifp->if_softc;
register u_int len;
register struct mbuf *m;
struct mbuf *top;
int pad;
while( inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS )
;
startagain:
/* printk( "S-" ); */
/* Sneak a peek at the next packet */
m = ifp->if_snd.ifq_head;
if (m == 0)
{
ifp->if_flags &= ~IFF_OACTIVE;
return;
}
for( len = 0, top = m; m; m = m->m_next )
len += m->m_len;
pad = padmap[ len & 3 ];
/*
* The 3c509 automatically pads short packets to minimum ethernet length,
* but we drop packets that are too large. Perhaps we should truncate
* them instead?
*/
if( len + pad > ETHER_MAX_LEN )
{
/* packet is obviously too large: toss it */
++ifp->if_oerrors;
IF_DEQUEUE( &ifp->if_snd, m );
m_freem( m );
goto readcheck;
}
if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4)
{
/* no room in FIFO */
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
/* make sure */
if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4)
{
ifp->if_flags |= IFF_OACTIVE;
return;
}
}
IF_DEQUEUE( &ifp->if_snd, m );
outw(BASE + EP_W1_TX_PIO_WR_1, len);
outw(BASE + EP_W1_TX_PIO_WR_1, 0x0); /* Second dword meaningless */
for (top = m; m != 0; m = m->m_next)
{
if( ep_ftst(F_ACCESS_32_BITS ) )
{
outsl( BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), m->m_len / 4 );
if( m->m_len & 3 )
outsb(BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t) + (m->m_len & (~3)), m->m_len & 3 );
}
else
{
outsw( BASE + EP_W1_TX_PIO_WR_1, mtod(m, caddr_t), m->m_len / 2 );
if( m->m_len & 1 )
outb( BASE + EP_W1_TX_PIO_WR_1, *(mtod(m, caddr_t) + m->m_len - 1) );
}
}
while( pad-- )
{
outb(BASE + EP_W1_TX_PIO_WR_1, 0); /* Padding */
}
ifp->if_timer = 2;
ifp->if_opackets++;
m_freem(top);
/* goto startagain; */
/*
* Is another packet coming in? We don't want to overflow the tiny RX
* fifo.
*/
readcheck:
if( inw(BASE + EP_W1_RX_STATUS) & RX_BYTES_MASK )
{
/*
* we check if we have packets left, in that case we prepare to come
* back later
*/
if( ifp->if_snd.ifq_head )
{
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
}
return;
}
goto startagain;
}
/**********************************************************************************
*
* DESCRIPTION: Routine to read frames from the card.
*
* RETURNS: nothing.
*
**********************************************************************************/
static void epread( register struct ep_softc *sc )
{
struct ether_header *eh;
struct mbuf *top, *mcur, *m;
struct ifnet *ifp;
int lenthisone;
short rx_fifo2, status;
register short rx_fifo;
ifp = &sc->arpcom.ac_if;
status = inw( BASE + EP_W1_RX_STATUS );
read_again:
if (status & ERR_RX)
{
++ifp->if_ierrors;
if( status & ERR_RX_OVERRUN )
{
/*
* we can think the rx latency is actually greather than we
* expect
*/
if( ep_ftst(F_RX_FIRST) )
sc->rx_overrunf++;
else
sc->rx_overrunl++;
}
goto out;
}
rx_fifo = rx_fifo2 = status & RX_BYTES_MASK;
if( ep_ftst( F_RX_FIRST ) )
{
MGETHDR( m, M_DONTWAIT, MT_DATA );
if( !m )
goto out;
if( rx_fifo >= MINCLSIZE )
MCLGET( m, M_DONTWAIT );
sc->top = sc->mcur = top = m;
#define EROUND ((sizeof(struct ether_header) + 3) & ~3)
#define EOFF (EROUND - sizeof(struct ether_header))
top->m_data += EOFF;
/* Read what should be the header. */
insw(BASE + EP_W1_RX_PIO_RD_1, mtod(top, caddr_t), sizeof(struct ether_header) / 2);
top->m_len = sizeof(struct ether_header);
rx_fifo -= sizeof(struct ether_header);
sc->cur_len = rx_fifo2;
}
else
{
/* come here if we didn't have a complete packet last time */
top = sc->top;
m = sc->mcur;
sc->cur_len += rx_fifo2;
}
/* Reads what is left in the RX FIFO */
while (rx_fifo > 0)
{
lenthisone = min( rx_fifo, M_TRAILINGSPACE(m) );
if( lenthisone == 0 )
{ /* no room in this one */
mcur = m;
MGET(m, M_WAIT, MT_DATA);
if (!m)
goto out;
if (rx_fifo >= MINCLSIZE)
MCLGET(m, M_WAIT);
m->m_len = 0;
mcur->m_next = m;
lenthisone = min(rx_fifo, M_TRAILINGSPACE(m));
}
if( ep_ftst( F_ACCESS_32_BITS ) )
{ /* default for EISA configured cards*/
insl( BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, lenthisone / 4);
m->m_len += (lenthisone & ~3);
if (lenthisone & 3)
insb(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, lenthisone & 3);
m->m_len += (lenthisone & 3);
}
else
{
insw(BASE + EP_W1_RX_PIO_RD_1, mtod(m, caddr_t) + m->m_len, lenthisone / 2);
m->m_len += lenthisone;
if( lenthisone & 1 )
*(mtod(m, caddr_t) + m->m_len - 1) = inb(BASE + EP_W1_RX_PIO_RD_1);
}
rx_fifo -= lenthisone;
}
if( status & ERR_RX_INCOMPLETE)
{ /* we haven't received the complete packet */
sc->mcur = m;
sc->rx_no_first++; /* to know how often we come here */
ep_frst( F_RX_FIRST );
if( !((status = inw(BASE + EP_W1_RX_STATUS)) & ERR_RX_INCOMPLETE) )
{
/* we see if by now, the packet has completly arrived */
goto read_again;
}
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_NEXT_EARLY_THRESH);
return;
}
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
++ifp->if_ipackets;
ep_fset(F_RX_FIRST);
top->m_pkthdr.rcvif = &sc->arpcom.ac_if;
top->m_pkthdr.len = sc->cur_len;
eh = mtod(top, struct ether_header *);
m_adj(top, sizeof(struct ether_header));
ether_input(ifp, eh, top);
sc->top = 0;
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
return;
out:
outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
if (sc->top)
{
m_freem(sc->top);
sc->top = 0;
sc->rx_no_mbuf++;
}
ep_fset(F_RX_FIRST);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS) ;
outw(BASE + EP_COMMAND, SET_RX_EARLY_THRESH | RX_INIT_EARLY_THRESH);
}
/**********************************************************************************
*
* DESCRIPTION:
* This routine handles interrupts. It is called from the "RX" task whenever
* the ISR post an event to the task.
* This is basically the "isr" from the FreeBSD driver.
*
* RETURNS: nothing.
*
**********************************************************************************/
static void ep_intr( struct ep_softc *sc )
{
register int status;
struct ifnet *ifp;
ifp = &sc->arpcom.ac_if;
rescan:
/* printk( "I-" ); */
while( ( status = inw(BASE + EP_STATUS)) & S_5_INTS )
{
/* first acknowledge all interrupt sources */
outw( BASE + EP_COMMAND, ACK_INTR | ( status & S_MASK ) );
if( status & ( S_RX_COMPLETE | S_RX_EARLY ) )
{
epread( sc );
continue;
}
if (status & S_TX_AVAIL)
{
/* we need ACK */
ifp->if_timer = 0;
ifp->if_flags &= ~IFF_OACTIVE;
GO_WINDOW(1);
inw(BASE + EP_W1_FREE_TX);
epstart(ifp);
}
if (status & S_CARD_FAILURE)
{
ifp->if_timer = 0;
printf("\nep%d:\n\tStatus: %x\n", sc->unit, status);
GO_WINDOW(4);
printf("\tFIFO Diagnostic: %x\n", inw(BASE + EP_W4_FIFO_DIAG));
printf("\tStat: %x\n", sc->stat);
printf("\tIpackets=%ld, Opackets=%ld\n", ifp->if_ipackets, ifp->if_opackets);
printf("\tNOF=%d, NOMB=%d, BPFD=%d, RXOF=%d, RXOL=%d, TXU=%d\n",
sc->rx_no_first, sc->rx_no_mbuf, sc->rx_bpf_disc, sc->rx_overrunf,
sc->rx_overrunl, sc->tx_underrun);
printf("ep%d: Status: %x (input buffer overflow)\n", sc->unit, status);
++ifp->if_ierrors;
epinit(sc);
return;
}
if (status & S_TX_COMPLETE)
{
ifp->if_timer = 0;
/* we need ACK. we do it at the end */
/*
* We need to read TX_STATUS until we get a 0 status in order to
* turn off the interrupt flag.
*/
while ((status = inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE)
{
if (status & TXS_SUCCES_INTR_REQ)
;
else if( status & (TXS_UNDERRUN | TXS_JABBER | TXS_MAX_COLLISION ) )
{
outw(BASE + EP_COMMAND, TX_RESET);
if (status & TXS_UNDERRUN)
{
sc->tx_underrun++;
}
else
{
if( status & TXS_JABBER )
;
else /* TXS_MAX_COLLISION - we shouldn't get here */
++ifp->if_collisions;
}
++ifp->if_oerrors;
outw(BASE + EP_COMMAND, TX_ENABLE);
/*
* To have a tx_avail_int but giving the chance to the
* Reception
*/
if( ifp->if_snd.ifq_head )
{
outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 8);
}
}
outb( BASE + EP_W1_TX_STATUS, 0x0 ); /* pops up the next status */
} /* while */
ifp->if_flags &= ~IFF_OACTIVE;
GO_WINDOW(1);
inw(BASE + EP_W1_FREE_TX);
epstart( ifp );
} /* end TX_COMPLETE */
}
outw(BASE + EP_COMMAND, C_INTR_LATCH); /* ACK int Latch */
if( (status = inw(BASE + EP_STATUS) ) & S_5_INTS )
goto rescan;
/* re-enable Ints */
outw( BASE + EP_COMMAND, SET_INTR_MASK | S_5_INTS );
/* printk( "I+" ); */
}
