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Split 3c509.c into 3c509.9 and 3c529.c, with shared code in 3c5x9.c.

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Probe mechanisms now use standard EISA and MCA bus methods, with 3c509.c
defining a custom ISA bus to handle the 3c509 contention resolution logic.
This commit is contained in:
Michael Brown 2005-04-14 12:23:12 +00:00
parent 1f26be34b8
commit 4c0d5a0b71
4 changed files with 700 additions and 639 deletions
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865
src/drivers/net/3c509.c
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@ -1,355 +1,92 @@
/**************************************************************************
ETHERBOOT - BOOTP/TFTP Bootstrap Program
/*
* Split out into 3c509.c and 3c5x9.c, to make it possible to build a
* 3c529 module without including ISA, ISAPnP and EISA code.
*
*/
Author: Martin Renters.
Date: Mar 22 1995
This code is based heavily on David Greenman's if_ed.c driver and
Andres Vega Garcia's if_ep.c driver.
Copyright (C) 1993-1994, David Greenman, Martin Renters.
Copyright (C) 1993-1995, Andres Vega Garcia.
Copyright (C) 1995, Serge Babkin.
This software may be used, modified, copied, distributed, and sold, in
both source and binary form provided that the above copyright and these
terms are retained. Under no circumstances are the authors responsible for
the proper functioning of this software, nor do the authors assume any
responsibility for damages incurred with its use.
3c509 support added by Serge Babkin (babkin@hq.icb.chel.su)
$Id$
***************************************************************************/
/* #define EDEBUG */
#include "etherboot.h"
#include "nic.h"
#include "eisa.h"
#include "isa.h"
#include "dev.h"
#include "io.h"
#include "timer.h"
#include "string.h"
#include "etherboot.h"
#include "3c509.h"
static unsigned short eth_nic_base;
static enum { none, bnc, utp } connector = none; /* for 3C509 */
#ifdef INCLUDE_3C529
/*
* This table and several other pieces of the MCA support
* code were shamelessly borrowed from the Linux kernel source.
*
* MCA support added by Adam Fritzler (mid@auk.cx)
* 3c509 cards have their own method of contention resolution; this
* effectively defines another bus type.
*
*/
struct el3_mca_adapters_struct {
const char *name;
int id;
/*
* A physical t509 device
*
*/
struct t509_device {
char *magic; /* must be first */
struct dev *dev;
uint16_t id_port;
uint16_t ioaddr;
unsigned char current_tag;
};
static struct el3_mca_adapters_struct el3_mca_adapters[] = {
{ "3Com 3c529 EtherLink III (10base2)", 0x627c },
{ "3Com 3c529 EtherLink III (10baseT)", 0x627d },
{ "3Com 3c529 EtherLink III (test mode)", 0x62db },
{ "3Com 3c529 EtherLink III (TP or coax)", 0x62f6 },
{ "3Com 3c529 EtherLink III (TP)", 0x62f7 },
{ NULL, 0 },
/*
* A t509 driver
*
*/
struct t509_driver {
char *name;
};
#endif
/**************************************************************************
ETH_RESET - Reset adapter
***************************************************************************/
static void t509_reset(struct nic *nic)
{
int i;
/*
* Ensure that there is sufficient space in the shared dev_bus
* structure for a struct pci_device.
*
*/
DEV_BUS( struct t509_device, t509_dev );
static char t509_magic[0]; /* guaranteed unique symbol */
/***********************************************************
Reset 3Com 509 card
*************************************************************/
/* stop card */
outw(RX_DISABLE, BASE + EP_COMMAND);
outw(RX_DISCARD_TOP_PACK, BASE + EP_COMMAND);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
outw(TX_DISABLE, BASE + EP_COMMAND);
outw(STOP_TRANSCEIVER, BASE + EP_COMMAND);
udelay(1000);
outw(RX_RESET, BASE + EP_COMMAND);
outw(TX_RESET, BASE + EP_COMMAND);
outw(C_INTR_LATCH, BASE + EP_COMMAND);
outw(SET_RD_0_MASK, BASE + EP_COMMAND);
outw(SET_INTR_MASK, BASE + EP_COMMAND);
outw(SET_RX_FILTER, BASE + EP_COMMAND);
/*
* initialize card
*/
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
GO_WINDOW(0);
/* Disable the card */
outw(0, BASE + EP_W0_CONFIG_CTRL);
/* Configure IRQ to none */
outw(SET_IRQ(0), BASE + EP_W0_RESOURCE_CFG);
/* Enable the card */
outw(ENABLE_DRQ_IRQ, BASE + EP_W0_CONFIG_CTRL);
GO_WINDOW(2);
/* Reload the ether_addr. */
for (i = 0; i < ETH_ALEN; i++)
outb(nic->node_addr[i], BASE + EP_W2_ADDR_0 + i);
outw(RX_RESET, BASE + EP_COMMAND);
outw(TX_RESET, BASE + EP_COMMAND);
/* 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(ACK_INTR | 0xff, BASE + EP_COMMAND);
outw(SET_RD_0_MASK | S_5_INTS, BASE + EP_COMMAND);
outw(SET_INTR_MASK, BASE + EP_COMMAND);
outw(SET_RX_FILTER | FIL_GROUP | FIL_INDIVIDUAL | FIL_BRDCST, BASE + EP_COMMAND);
/* configure BNC */
if (connector == bnc) {
outw(START_TRANSCEIVER, BASE + EP_COMMAND);
udelay(1000);
}
/* configure UTP */
else if (connector == utp) {
GO_WINDOW(4);
outw(ENABLE_UTP, BASE + EP_W4_MEDIA_TYPE);
sleep(2); /* Give time for media to negotiate */
GO_WINDOW(1);
}
/* start transceiver and receiver */
outw(RX_ENABLE, BASE + EP_COMMAND);
outw(TX_ENABLE, BASE + EP_COMMAND);
/* set early threshold for minimal packet length */
outw(SET_RX_EARLY_THRESH | ETH_ZLEN, BASE + EP_COMMAND);
outw(SET_TX_START_THRESH | 16, BASE + EP_COMMAND);
}
/**************************************************************************
ETH_TRANSMIT - Transmit a frame
***************************************************************************/
static char padmap[] = {
0, 3, 2, 1};
static void t509_transmit(
struct nic *nic,
const char *d, /* Destination */
unsigned int t, /* Type */
unsigned int s, /* size */
const char *p) /* Packet */
{
register unsigned int len;
int pad;
int status;
#ifdef EDEBUG
printf("{l=%d,t=%hX}",s+ETH_HLEN,t);
#endif
/* swap bytes of type */
t= htons(t);
len=s+ETH_HLEN; /* actual length of packet */
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 > ETH_FRAME_LEN) {
return;
}
/* drop acknowledgements */
while ((status=inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE ) {
if (status & (TXS_UNDERRUN|TXS_MAX_COLLISION|TXS_STATUS_OVERFLOW)) {
outw(TX_RESET, BASE + EP_COMMAND);
outw(TX_ENABLE, BASE + EP_COMMAND);
/*
* Find a port that can be used for contention select
*
* Called only once, so inlined for efficiency.
*
*/
static inline int find_id_port ( struct t509_device *t509 ) {
for ( t509->id_port = EP_ID_PORT_START ;
t509->id_port < EP_ID_PORT_END ;
t509->id_port += EP_ID_PORT_INC ) {
outb ( 0x00, t509->id_port );
outb ( 0xff, t509->id_port );
if ( inb ( t509->id_port ) & 0x01 ) {
/* Found a suitable port */
return 1;
}
outb(0x0, BASE + EP_W1_TX_STATUS);
}
while (inw(BASE + EP_W1_FREE_TX) < (unsigned short)len + pad + 4)
; /* no room in FIFO */
outw(len, BASE + EP_W1_TX_PIO_WR_1);
outw(0x0, BASE + EP_W1_TX_PIO_WR_1); /* Second dword meaningless */
/* write packet */
outsw(BASE + EP_W1_TX_PIO_WR_1, d, ETH_ALEN/2);
outsw(BASE + EP_W1_TX_PIO_WR_1, nic->node_addr, ETH_ALEN/2);
outw(t, BASE + EP_W1_TX_PIO_WR_1);
outsw(BASE + EP_W1_TX_PIO_WR_1, p, s / 2);
if (s & 1)
outb(*(p+s - 1), BASE + EP_W1_TX_PIO_WR_1);
while (pad--)
outb(0, BASE + EP_W1_TX_PIO_WR_1); /* Padding */
/* wait for Tx complete */
while((inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS) != 0)
;
}
/**************************************************************************
ETH_POLL - Wait for a frame
***************************************************************************/
static int t509_poll(struct nic *nic, int retrieve)
{
/* common variables */
/* variables for 3C509 */
short status, cst;
register short rx_fifo;
cst=inw(BASE + EP_STATUS);
#ifdef EDEBUG
if(cst & 0x1FFF)
printf("-%hX-",cst);
#endif
if( (cst & S_RX_COMPLETE)==0 ) {
/* acknowledge everything */
outw(ACK_INTR| (cst & S_5_INTS), BASE + EP_COMMAND);
outw(C_INTR_LATCH, BASE + EP_COMMAND);
return 0;
}
status = inw(BASE + EP_W1_RX_STATUS);
#ifdef EDEBUG
printf("*%hX*",status);
#endif
if (status & ERR_RX) {
outw(RX_DISCARD_TOP_PACK, BASE + EP_COMMAND);
return 0;
}
rx_fifo = status & RX_BYTES_MASK;
if (rx_fifo==0)
return 0;
if ( ! retrieve ) return 1;
/* read packet */
#ifdef EDEBUG
printf("[l=%d",rx_fifo);
#endif
insw(BASE + EP_W1_RX_PIO_RD_1, nic->packet, rx_fifo / 2);
if(rx_fifo & 1)
nic->packet[rx_fifo-1]=inb(BASE + EP_W1_RX_PIO_RD_1);
nic->packetlen=rx_fifo;
while(1) {
status = inw(BASE + EP_W1_RX_STATUS);
#ifdef EDEBUG
printf("*%hX*",status);
#endif
rx_fifo = status & RX_BYTES_MASK;
if(rx_fifo>0) {
insw(BASE + EP_W1_RX_PIO_RD_1, nic->packet+nic->packetlen, rx_fifo / 2);
if(rx_fifo & 1)
nic->packet[nic->packetlen+rx_fifo-1]=inb(BASE + EP_W1_RX_PIO_RD_1);
nic->packetlen+=rx_fifo;
#ifdef EDEBUG
printf("+%d",rx_fifo);
#endif
}
if(( status & RX_INCOMPLETE )==0) {
#ifdef EDEBUG
printf("=%d",nic->packetlen);
#endif
break;
}
udelay(1000); /* if incomplete wait 1 ms */
}
/* acknowledge reception of packet */
outw(RX_DISCARD_TOP_PACK, BASE + EP_COMMAND);
while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
#ifdef EDEBUG
{
unsigned short type = 0; /* used by EDEBUG */
type = (nic->packet[12]<<8) | nic->packet[13];
if(nic->packet[0]+nic->packet[1]+nic->packet[2]+nic->packet[3]+nic->packet[4]+
nic->packet[5] == 0xFF*ETH_ALEN)
printf(",t=%hX,b]",type);
else
printf(",t=%hX]",type);
}
#endif
return (1);
}
/*************************************************************************
3Com 509 - specific routines
**************************************************************************/
static int
eeprom_rdy(void)
{
int i;
for (i = 0; is_eeprom_busy(IS_BASE) && i < MAX_EEPROMBUSY; i++);
if (i >= MAX_EEPROMBUSY) {
/* printf("3c509: eeprom failed to come ready.\n"); */
/* memory in EPROM is tight */
/* printf("3c509: eeprom busy.\n"); */
return (0);
}
return (1);
/* No id port available */
return 0;
}
/*
* get_e: gets a 16 bits word from the EEPROM. we must have set the window
* before
* Send ID sequence to the ID port
*
* Called only once, so inlined for efficiency.
*
*/
static int
get_e(int offset)
{
if (!eeprom_rdy())
return (0xffff);
outw(EEPROM_CMD_RD | offset, IS_BASE + EP_W0_EEPROM_COMMAND);
if (!eeprom_rdy())
return (0xffff);
return (inw(IS_BASE + EP_W0_EEPROM_DATA));
static inline void send_id_sequence ( struct t509_device *t509 ) {
unsigned short lrs_state, i;
outb ( 0x00, t509->id_port );
outb ( 0x00, t509->id_port );
lrs_state = 0xff;
for ( i = 0; i < 255; i++ ) {
outb ( lrs_state, t509->id_port );
lrs_state <<= 1;
lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state;
}
}
static int
send_ID_sequence(int port)
{
int cx, al;
for (al = 0xff, cx = 0; cx < 255; cx++) {
outb(al, port);
al <<= 1;
if (al & 0x100)
al ^= 0xcf;
}
return (1);
}
/*
* 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
@ -362,314 +99,170 @@ send_ID_sequence(int port)
* the AX register which is conveniently returned to us by inb(). Hence; we
* read 16 times getting one bit of data with each read.
*/
static int
get_eeprom_data(int id_port, int offset)
{
static uint16_t id_read_eeprom ( struct t509_device *t509, int offset ) {
int i, data = 0;
outb(0x80 + offset, id_port);
outb ( 0x80 + offset, t509->id_port );
/* Do we really need this wait? Won't be noticeable anyway */
udelay(10000);
for (i = 0; i < 16; i++)
data = (data << 1) | (inw(id_port) & 1);
return (data);
for ( i = 0; i < 16; i++ ) {
data = ( data << 1 ) | ( inw ( t509->id_port ) & 1 );
}
return data;
}
static void __t509_disable(void)
{
outb(0xc0, EP_ID_PORT);
}
static void t509_disable ( struct nic *nic ) {
/* reset and disable merge */
t509_reset(nic);
__t509_disable();
}
static void t509_irq(struct nic *nic __unused, irq_action_t action __unused)
{
switch ( action ) {
case DISABLE :
break;
case ENABLE :
break;
case FORCE :
break;
}
}
/**************************************************************************
ETH_PROBE - Look for an adapter
***************************************************************************/
#ifdef INCLUDE_3C529
static int t529_probe(struct dev *dev, unsigned short *probe_addrs __unused)
#else
static int t509_probe(struct dev *dev, unsigned short *probe_addrs __unused)
#endif
{
struct nic *nic = (struct nic *)dev;
/* common variables */
int i;
int failcount;
#ifdef INCLUDE_3C529
struct el3_mca_adapters_struct *mcafound = NULL;
int mca_pos4 = 0, mca_pos5 = 0, mca_irq = 0;
#endif
__t509_disable(); /* in case board was active */
for (failcount = 0; failcount < 100; failcount++) {
int data, j, io_base, id_port;
unsigned short k;
int ep_current_tag;
short *p;
#ifdef INCLUDE_3C529
int curboard;
#endif
id_port = EP_ID_PORT;
ep_current_tag = EP_LAST_TAG + 1;
/*********************************************************
Search for 3Com 509 card
***********************************************************/
#ifdef INCLUDE_3C529
/*
* XXX: We should really check to make sure we have an MCA
* bus controller before going ahead with this...
*
* For now, we avoid any hassle by making it a compile
* time option.
*
*/
/* printf("\nWarning: Assuming presence of MCA bus\n"); */
/* Make sure motherboard setup is off */
outb_p(0xff, MCA_MOTHERBOARD_SETUP_REG);
/* Cycle through slots */
for(curboard=0; curboard<MCA_MAX_SLOT_NR; curboard++) {
int boardid;
int curcard;
outb_p(0x8|(curboard&0xf), MCA_ADAPTER_SETUP_REG);
boardid = inb_p(MCA_POS_REG(0));
boardid += inb_p(MCA_POS_REG(1)) << 8;
curcard = 0;
while (el3_mca_adapters[curcard].name) {
if (el3_mca_adapters[curcard].id == boardid) {
mcafound = &el3_mca_adapters[curcard];
mca_pos4 = inb_p(MCA_POS_REG(4));
mca_pos5 = inb_p(MCA_POS_REG(5));
goto donewithdetect;
}
else
curcard++;
}
}
donewithdetect:
/* Kill all setup modes */
outb_p(0, MCA_ADAPTER_SETUP_REG);
if (mcafound) {
eth_nic_base = ((short)((mca_pos4&0xfc)|0x02)) << 8;
mca_irq = mca_pos5 & 0x0f;
ep_current_tag--;
}
else
/*printf("MCA Card not found\n")*/;
#endif
/* Look for the EISA boards, leave them activated */
/* search for the first card, ignore all others */
for(j = 1; j < 16; j++) {
io_base = (j * EP_EISA_START) | EP_EISA_W0;
if (inw(io_base + EP_W0_MFG_ID) != MFG_ID)
continue;
/* we must have found 0x1f if the board is EISA configurated */
if ((inw(io_base + EP_W0_ADDRESS_CFG) & 0x1f) != 0x1f)
continue;
/* Reset and Enable the card */
outb(W0_P4_CMD_RESET_ADAPTER, io_base + EP_W0_CONFIG_CTRL);
udelay(1000); /* Must wait 800 µs, be conservative */
outb(W0_P4_CMD_ENABLE_ADAPTER, io_base + EP_W0_CONFIG_CTRL);
/*
* Once activated, all the registers are mapped in the range
* x000 - x00F, where x is the slot number.
*/
eth_nic_base = j * EP_EISA_START;
break;
}
ep_current_tag--;
/* Look for the ISA boards. Init and leave them actived */
/* search for the first card, ignore all others */
outb(0xc0, id_port); /* Global reset */
udelay(1000); /* wait 1 ms */
for (i = 0; i < EP_MAX_BOARDS; i++) {
outb(0, id_port);
outb(0, id_port);
send_ID_sequence(id_port);
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++)
data = get_eeprom_data(id_port, j);
eth_nic_base =
(get_eeprom_data(id_port, EEPROM_ADDR_CFG) & 0x1f) * 0x10 + 0x200;
outb(ep_current_tag, id_port); /* tags board */
outb(ACTIVATE_ADAPTER_TO_CONFIG, id_port);
ep_current_tag--;
break;
}
if (i >= EP_MAX_BOARDS)
goto no3c509;
/*
* The iobase was found and MFG_ID was 0x6d50. PROD_ID should be
* 0x9[0-f]50
*/
GO_WINDOW(0);
k = get_e(EEPROM_PROD_ID);
#ifdef INCLUDE_3C529
/*
* On MCA, the PROD_ID matches the MCA card ID (POS0+POS1)
*/
if (mcafound) {
if (mcafound->id != k) {
printf("MCA: PROD_ID in EEPROM does not match MCA card ID! (%hX != %hX)\n", k, mcafound->id);
goto no3c509;
}
} else { /* for ISA/EISA */
if ((k & 0xf0ff) != (PROD_ID & 0xf0ff))
goto no3c509;
}
#else
if ((k & 0xf0ff) != (PROD_ID & 0xf0ff))
goto no3c509;
#endif
#ifdef INCLUDE_3C529
if (mcafound) {
printf("%s board found on MCA at %#hx IRQ %d -",
mcafound->name, eth_nic_base, mca_irq);
} else {
#endif
if(eth_nic_base >= EP_EISA_START)
printf("3C5x9 board on EISA at %#hx - ",eth_nic_base);
else
printf("3C5x9 board on ISA at %#hx - ",eth_nic_base);
#ifdef INCLUDE_3C529
}
#endif
/* test for presence of connectors */
i = inw(IS_BASE + EP_W0_CONFIG_CTRL);
j = (inw(IS_BASE + EP_W0_ADDRESS_CFG) >> 14) & 0x3;
switch(j) {
case 0:
if (i & IS_UTP) {
printf("10baseT\n");
connector = utp;
}
else {
printf("10baseT not present\n");
goto no3c509;
}
break;
case 1:
if (i & IS_AUI)
printf("10base5\n");
else {
printf("10base5 not present\n");
goto no3c509;
}
break;
case 3:
if (i & IS_BNC) {
printf("10base2\n");
connector = bnc;
}
else {
printf("10base2 not present\n");
goto no3c509;
}
break;
default:
printf("unknown connector\n");
goto no3c509;
}
/*
* Read the station address from the eeprom
*/
p = (unsigned short *) nic->node_addr;
for (i = 0; i < ETH_ALEN / 2; i++) {
GO_WINDOW(0);
p[i] = htons(get_e(i));
GO_WINDOW(2);
outw(ntohs(p[i]), BASE + EP_W2_ADDR_0 + (i * 2));
}
printf("Ethernet address: %!\n", nic->node_addr);
t509_reset(nic);
nic->irqno = 0;
nic->ioaddr = eth_nic_base;
static struct nic_operations t509_operations;
static struct nic_operations t509_operations = {
.connect = dummy_connect,
.poll = t509_poll,
.transmit = t509_transmit,
.irq = t509_irq,
.disable = t509_disable,
};
nic->nic_op = &t509_operations;
/* Based on PnP ISA map */
dev->devid.vendor_id = htons(GENERIC_ISAPNP_VENDOR);
dev->devid.device_id = htons(0x80f7);
return 1;
no3c509:
continue;
/* printf("(probe fail)"); */
}
return 0;
}
#ifdef INCLUDE_3C509
static struct isa_driver t509_driver __isa_driver = {
.type = NIC_DRIVER,
.name = "3C509",
.probe = t509_probe,
.ioaddrs = 0,
};
ISA_ROM("3c509","3c509, ISA/EISA");
#endif
#ifdef INCLUDE_3C529
static struct isa_driver t529_driver __isa_driver = {
.type = NIC_DRIVER,
.name = "3C529",
.probe = t529_probe,
.ioaddrs = 0,
};
ISA_ROM("3c529","3c529 == MCA 3c509");
#endif
/*
* Local variables:
* c-basic-offset: 8
* End:
* Find the next t509 device
*
* Called only once, so inlined for efficiency.
*
*/
static inline int fill_t509_device ( struct t509_device *t509 ) {
int i;
uint16_t iobase;
/*
* If this is the start of the scan, find an id_port and clear
* all tag registers. Otherwise, tell already-found NICs not
* to respond.
*
*/
if ( t509->current_tag == 0 ) {
if ( ! find_id_port ( t509 ) ) {
DBG ( "No ID port available for contention select\n" );
return 0;
}
outb ( 0xd0, t509->id_port );
} else {
outb ( 0xd8, t509->id_port ) ;
}
/* Send the ID sequence */
send_id_sequence ( t509 );
/* Check the manufacturer ID */
if ( id_read_eeprom ( t509, EEPROM_MFG_ID ) != MFG_ID ) {
/* No more t509 devices */
return 0;
}
/* Do contention select by reading the MAC address */
for ( i = 0 ; i < 3 ; i++ ) {
id_read_eeprom ( t509, i );
}
/* By now, only one device will be left active. Get its I/O
* address, tag and activate the adaptor. Tagging will
* prevent it taking part in the next scan, enabling us to see
* the next device.
*/
iobase = id_read_eeprom ( t509, EEPROM_ADDR_CFG );
t509->ioaddr = 0x200 + ( ( iobase & 0x1f ) << 4 );
outb ( ++t509->current_tag, t509->id_port ); /* tag */
outb ( ( 0xe0 | iobase ), t509->id_port ); /* activate */
return 1;
}
/*
* Obtain a struct t509_device * from a struct dev *
*
* If dev has not previously been used for a PCI device scan, blank
* out struct t509_device
*/
static struct t509_device * t509_device ( struct dev *dev ) {
struct t509_device *t509 = dev->bus;
if ( t509->magic != t509_magic ) {
memset ( t509, 0, sizeof ( *t509 ) );
t509->magic = t509_magic;
}
t509->dev = dev;
return t509;
}
/*
* Find a t509 device matching the specified driver. ("Matching the
* specified driver" is, in this case, a no-op, but we want to
* preserve the common bus API).
*
*/
static int find_t509_device ( struct t509_device *t509,
struct t509_driver *driver ) {
/* Find the next t509 device */
if ( ! fill_t509_device ( t509 ) )
return 0;
/* Fill in dev structure, if present */
if ( t509->dev ) {
t509->dev->name = driver->name;
t509->dev->devid.bus_type = ISA_BUS_TYPE;
t509->dev->devid.vendor_id = MFG_ID;
t509->dev->devid.device_id = PROD_ID;
}
return 1;
}
/*
* The ISA probe function
*
*/
static struct t509_driver el3_t509_driver = { "3c509 (ISA)" };
static int el3_t509_probe ( struct dev *dev ) {
struct nic *nic = nic_device ( dev );
struct t509_device *t509 = t509_device ( dev );
if ( ! find_t509_device ( t509, &el3_t509_driver ) )
return 0;
nic->ioaddr = t509->ioaddr;
nic->irqno = 0;
printf ( "3C5x9 board on ISA at %#hx - ", nic->ioaddr );
/* Hand off to generic t5x9 probe routine */
return t5x9_probe ( nic, ISA_PROD_ID ( PROD_ID ), ISA_PROD_ID_MASK );
}
BOOT_DRIVER ( "3c509", el3_t509_probe );
/*
* The 3c509 driver also supports EISA cards
*
*/
static struct eisa_id el3_eisa_adapters[] = {
{ "3Com 3c509 EtherLink III (EISA)", MFG_ID, PROD_ID },
};
static struct eisa_driver el3_eisa_driver =
EISA_DRIVER ( "3c509 (EISA)", el3_eisa_adapters );
static int el3_eisa_probe ( struct dev *dev ) {
struct nic *nic = nic_device ( dev );
struct eisa_device *eisa = eisa_device ( dev );
if ( ! find_eisa_device ( eisa, &el3_eisa_driver ) )
return 0;
enable_eisa_device ( eisa );
nic->ioaddr = eisa->ioaddr;
nic->irqno = 0;
printf ( "3C5x9 board on EISA at %#hx - ", nic->ioaddr );
/* Hand off to generic t5x9 probe routine */
return t5x9_probe ( nic, ISA_PROD_ID ( PROD_ID ), ISA_PROD_ID_MASK );
}
BOOT_DRIVER ( "3c509 (EISA)", el3_eisa_probe );
/*
* We currently build both ISA and EISA support into a single ROM
* image, though there's no reason why this couldn't be split to
* reduce code size; just split this .c file into two in the obvious
* place.
*
*/
ISA_ROM ( "3c509","3c509, ISA/EISA" );

12
src/drivers/net/3c509.h
View File

@ -49,9 +49,9 @@
#define MAX_EEPROMBUSY 1000
#define EP_LAST_TAG 0xd7
#define EP_MAX_BOARDS 16
#ifndef EP_ID_PORT
#define EP_ID_PORT 0x100
#endif
#define EP_ID_PORT_START 0x110
#define EP_ID_PORT_INC 0x10
#define EP_ID_PORT_END 0x200
/*
* Commands to read/write EEPROM trough EEPROM command register (Window 0,
@ -374,6 +374,12 @@
#define RX_BYTES_MASK (unsigned short) (0x07ff)
/*
* Function shared between 3c509.c and 3c529.c
*/
extern int t5x9_probe ( struct nic *nic,
uint16_t prod_id_check, uint16_t prod_id_mask );
/*
* Local variables:

49
src/drivers/net/3c529.c Normal file
View File

@ -0,0 +1,49 @@
/*
* Split out from 3c509.c to make build process more sane
*
*/
#include "etherboot.h"
#include "mca.h"
#include "isa.h"
#include "nic.h"
#include "3c509.h"
/*
* This table and several other pieces of the MCA support
* code were shamelessly borrowed from the Linux kernel source.
*
* MCA support added by Adam Fritzler (mid@auk.cx)
*
*/
static struct mca_id el3_mca_adapters[] = {
{ "3Com 3c529 EtherLink III (10base2)", 0x627c },
{ "3Com 3c529 EtherLink III (10baseT)", 0x627d },
{ "3Com 3c529 EtherLink III (test mode)", 0x62db },
{ "3Com 3c529 EtherLink III (TP or coax)", 0x62f6 },
{ "3Com 3c529 EtherLink III (TP)", 0x62f7 },
};
static struct mca_driver t529_driver
= MCA_DRIVER ( "3c529", el3_mca_adapters );
ISA_ROM( "3c529", "3c529 == MCA 3c509" );
static int t529_probe ( struct dev *dev ) {
struct nic *nic = nic_device ( dev );
struct mca_device *mca = mca_device ( dev );
if ( ! find_mca_device ( mca, &t529_driver ) )
return 0;
/* Retrieve NIC parameters from MCA device parameters */
nic->ioaddr = ( ( mca->pos[4] & 0xfc ) | 0x02 ) << 8;
nic->irqno = mca->pos[5] & 0x0f;
printf ( "%s board found on MCA at %#hx IRQ %d -",
dev->name, nic->ioaddr, nic->irqno );
/* Hand off to generic t5x9 probe routine */
return t5x9_probe ( nic, MCA_ID ( mca ), 0xffff );
}
BOOT_DRIVER ( "3c529", t529_probe );

413
src/drivers/net/3c5x9.c Normal file
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@ -0,0 +1,413 @@
/**************************************************************************
ETHERBOOT - BOOTP/TFTP Bootstrap Program
Author: Martin Renters.
Date: Mar 22 1995
This code is based heavily on David Greenman's if_ed.c driver and
Andres Vega Garcia's if_ep.c driver.
Copyright (C) 1993-1994, David Greenman, Martin Renters.
Copyright (C) 1993-1995, Andres Vega Garcia.
Copyright (C) 1995, Serge Babkin.
This software may be used, modified, copied, distributed, and sold, in
both source and binary form provided that the above copyright and these
terms are retained. Under no circumstances are the authors responsible for
the proper functioning of this software, nor do the authors assume any
responsibility for damages incurred with its use.
3c509 support added by Serge Babkin (babkin@hq.icb.chel.su)
$Id$
***************************************************************************/
/* #define EDEBUG */
#include "etherboot.h"
#include "nic.h"
#include "isa.h"
#include "timer.h"
#include "3c509.h"
static enum { none, bnc, utp } connector = none; /* for 3C509 */
/**************************************************************************
ETH_RESET - Reset adapter
***************************************************************************/
static void t509_disable ( struct nic *nic ) {
/* stop card */
outw(RX_DISABLE, nic->ioaddr + EP_COMMAND);
outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
outw(TX_DISABLE, nic->ioaddr + EP_COMMAND);
outw(STOP_TRANSCEIVER, nic->ioaddr + EP_COMMAND);
udelay(1000);
outw(RX_RESET, nic->ioaddr + EP_COMMAND);
outw(TX_RESET, nic->ioaddr + EP_COMMAND);
outw(C_INTR_LATCH, nic->ioaddr + EP_COMMAND);
outw(SET_RD_0_MASK, nic->ioaddr + EP_COMMAND);
outw(SET_INTR_MASK, nic->ioaddr + EP_COMMAND);
outw(SET_RX_FILTER, nic->ioaddr + EP_COMMAND);
/*
* wait for reset to complete
*/
while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
GO_WINDOW(nic->ioaddr,0);
/* Disable the card */
outw(0, nic->ioaddr + EP_W0_CONFIG_CTRL);
/* Configure IRQ to none */
outw(SET_IRQ(0), nic->ioaddr + EP_W0_RESOURCE_CFG);
}
static void t509_enable ( struct nic *nic ) {
int i;
/* Enable the card */
GO_WINDOW(nic->ioaddr,0);
outw(ENABLE_DRQ_IRQ, nic->ioaddr + EP_W0_CONFIG_CTRL);
GO_WINDOW(nic->ioaddr,2);
/* Reload the ether_addr. */
for (i = 0; i < ETH_ALEN; i++)
outb(nic->node_addr[i], nic->ioaddr + EP_W2_ADDR_0 + i);
outw(RX_RESET, nic->ioaddr + EP_COMMAND);
outw(TX_RESET, nic->ioaddr + EP_COMMAND);
/* Window 1 is operating window */
GO_WINDOW(nic->ioaddr,1);
for (i = 0; i < 31; i++)
inb(nic->ioaddr + EP_W1_TX_STATUS);
/* get rid of stray intr's */
outw(ACK_INTR | 0xff, nic->ioaddr + EP_COMMAND);
outw(SET_RD_0_MASK | S_5_INTS, nic->ioaddr + EP_COMMAND);
outw(SET_INTR_MASK, nic->ioaddr + EP_COMMAND);
outw(SET_RX_FILTER | FIL_GROUP | FIL_INDIVIDUAL | FIL_BRDCST,
nic->ioaddr + EP_COMMAND);
/* configure BNC */
if (connector == bnc) {
outw(START_TRANSCEIVER, nic->ioaddr + EP_COMMAND);
udelay(1000);
}
/* configure UTP */
else if (connector == utp) {
GO_WINDOW(nic->ioaddr,4);
outw(ENABLE_UTP, nic->ioaddr + EP_W4_MEDIA_TYPE);
sleep(2); /* Give time for media to negotiate */
GO_WINDOW(nic->ioaddr,1);
}
/* start transceiver and receiver */
outw(RX_ENABLE, nic->ioaddr + EP_COMMAND);
outw(TX_ENABLE, nic->ioaddr + EP_COMMAND);
/* set early threshold for minimal packet length */
outw(SET_RX_EARLY_THRESH | ETH_ZLEN, nic->ioaddr + EP_COMMAND);
outw(SET_TX_START_THRESH | 16, nic->ioaddr + EP_COMMAND);
}
static void t509_reset ( struct nic *nic ) {
t509_disable ( nic );
t509_enable ( nic );
}
/**************************************************************************
ETH_TRANSMIT - Transmit a frame
***************************************************************************/
static char padmap[] = {
0, 3, 2, 1};
static void t509_transmit(
struct nic *nic,
const char *d, /* Destination */
unsigned int t, /* Type */
unsigned int s, /* size */
const char *p) /* Packet */
{
register unsigned int len;
int pad;
int status;
#ifdef EDEBUG
printf("{l=%d,t=%hX}",s+ETH_HLEN,t);
#endif
/* swap bytes of type */
t= htons(t);
len=s+ETH_HLEN; /* actual length of packet */
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 > ETH_FRAME_LEN) {
return;
}
/* drop acknowledgements */
while ((status=inb(nic->ioaddr + EP_W1_TX_STATUS)) & TXS_COMPLETE ) {
if (status & (TXS_UNDERRUN|TXS_MAX_COLLISION|TXS_STATUS_OVERFLOW)) {
outw(TX_RESET, nic->ioaddr + EP_COMMAND);
outw(TX_ENABLE, nic->ioaddr + EP_COMMAND);
}
outb(0x0, nic->ioaddr + EP_W1_TX_STATUS);
}
while (inw(nic->ioaddr + EP_W1_FREE_TX) < (unsigned short)len + pad + 4)
; /* no room in FIFO */
outw(len, nic->ioaddr + EP_W1_TX_PIO_WR_1);
outw(0x0, nic->ioaddr + EP_W1_TX_PIO_WR_1); /* Second dword meaningless */
/* write packet */
outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, d, ETH_ALEN/2);
outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, nic->node_addr, ETH_ALEN/2);
outw(t, nic->ioaddr + EP_W1_TX_PIO_WR_1);
outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, p, s / 2);
if (s & 1)
outb(*(p+s - 1), nic->ioaddr + EP_W1_TX_PIO_WR_1);
while (pad--)
outb(0, nic->ioaddr + EP_W1_TX_PIO_WR_1); /* Padding */
/* wait for Tx complete */
while((inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS) != 0)
;
}
/**************************************************************************
ETH_POLL - Wait for a frame
***************************************************************************/
static int t509_poll(struct nic *nic, int retrieve)
{
/* common variables */
/* variables for 3C509 */
short status, cst;
register short rx_fifo;
cst=inw(nic->ioaddr + EP_STATUS);
#ifdef EDEBUG
if(cst & 0x1FFF)
printf("-%hX-",cst);
#endif
if( (cst & S_RX_COMPLETE)==0 ) {
/* acknowledge everything */
outw(ACK_INTR| (cst & S_5_INTS), nic->ioaddr + EP_COMMAND);
outw(C_INTR_LATCH, nic->ioaddr + EP_COMMAND);
return 0;
}
status = inw(nic->ioaddr + EP_W1_RX_STATUS);
#ifdef EDEBUG
printf("*%hX*",status);
#endif
if (status & ERR_RX) {
outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
return 0;
}
rx_fifo = status & RX_BYTES_MASK;
if (rx_fifo==0)
return 0;
if ( ! retrieve ) return 1;
/* read packet */
#ifdef EDEBUG
printf("[l=%d",rx_fifo);
#endif
insw(nic->ioaddr + EP_W1_RX_PIO_RD_1, nic->packet, rx_fifo / 2);
if(rx_fifo & 1)
nic->packet[rx_fifo-1]=inb(nic->ioaddr + EP_W1_RX_PIO_RD_1);
nic->packetlen=rx_fifo;
while(1) {
status = inw(nic->ioaddr + EP_W1_RX_STATUS);
#ifdef EDEBUG
printf("*%hX*",status);
#endif
rx_fifo = status & RX_BYTES_MASK;
if(rx_fifo>0) {
insw(nic->ioaddr + EP_W1_RX_PIO_RD_1, nic->packet+nic->packetlen, rx_fifo / 2);
if(rx_fifo & 1)
nic->packet[nic->packetlen+rx_fifo-1]=inb(nic->ioaddr + EP_W1_RX_PIO_RD_1);
nic->packetlen+=rx_fifo;
#ifdef EDEBUG
printf("+%d",rx_fifo);
#endif
}
if(( status & RX_INCOMPLETE )==0) {
#ifdef EDEBUG
printf("=%d",nic->packetlen);
#endif
break;
}
udelay(1000); /* if incomplete wait 1 ms */
}
/* acknowledge reception of packet */
outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
;
#ifdef EDEBUG
{
unsigned short type = 0; /* used by EDEBUG */
type = (nic->packet[12]<<8) | nic->packet[13];
if(nic->packet[0]+nic->packet[1]+nic->packet[2]+nic->packet[3]+nic->packet[4]+
nic->packet[5] == 0xFF*ETH_ALEN)
printf(",t=%hX,b]",type);
else
printf(",t=%hX]",type);
}
#endif
return (1);
}
/**************************************************************************
ETH_IRQ - interrupt handling
***************************************************************************/
static void t509_irq(struct nic *nic __unused, irq_action_t action __unused)
{
switch ( action ) {
case DISABLE :
break;
case ENABLE :
break;
case FORCE :
break;
}
}
/*************************************************************************
3Com 509 - specific routines
**************************************************************************/
static int eeprom_rdy ( uint16_t ioaddr ) {
int i;
for (i = 0; is_eeprom_busy(ioaddr) && i < MAX_EEPROMBUSY; i++);
if (i >= MAX_EEPROMBUSY) {
/* printf("3c509: eeprom failed to come ready.\n"); */
/* memory in EPROM is tight */
/* printf("3c509: eeprom busy.\n"); */
return (0);
}
return (1);
}
/*
* get_e: gets a 16 bits word from the EEPROM.
*/
static int get_e ( uint16_t ioaddr, int offset ) {
GO_WINDOW(ioaddr,0);
if (!eeprom_rdy(ioaddr))
return (0xffff);
outw(EEPROM_CMD_RD | offset, ioaddr + EP_W0_EEPROM_COMMAND);
if (!eeprom_rdy(ioaddr))
return (0xffff);
return (inw(ioaddr + EP_W0_EEPROM_DATA));
}
struct nic_operations t509_operations = {
.connect = dummy_connect,
.poll = t509_poll,
.transmit = t509_transmit,
.irq = t509_irq,
.disable = t509_disable,
};
/**************************************************************************
ETH_PROBE - Look for an adapter
***************************************************************************/
int t5x9_probe ( struct nic *nic,
uint16_t prod_id_check, uint16_t prod_id_mask ) {
uint16_t prod_id;
int i,j;
unsigned short *p;
/* Check product ID */
prod_id = get_e ( nic->ioaddr, EEPROM_PROD_ID );
if ( ( prod_id & prod_id_mask ) != prod_id_check ) {
printf ( "EEPROM Product ID is incorrect (%hx & %hx != %hx)\n",
prod_id, prod_id_mask, prod_id_check );
return 0;
}
/* test for presence of connectors */
GO_WINDOW(nic->ioaddr,0);
i = inw(nic->ioaddr + EP_W0_CONFIG_CTRL);
j = (inw(nic->ioaddr + EP_W0_ADDRESS_CFG) >> 14) & 0x3;
switch(j) {
case 0:
if (i & IS_UTP) {
printf("10baseT\n");
connector = utp;
} else {
printf("10baseT not present\n");
return 0;
}
break;
case 1:
if (i & IS_AUI) {
printf("10base5\n");
} else {
printf("10base5 not present\n");
return 0;
}
break;
case 3:
if (i & IS_BNC) {
printf("10base2\n");
connector = bnc;
} else {
printf("10base2 not present\n");
return 0;
}
break;
default:
printf("unknown connector\n");
return 0;
}
/*
* Read the station address from the eeprom
*/
p = (unsigned short *) nic->node_addr;
for (i = 0; i < ETH_ALEN / 2; i++) {
p[i] = htons(get_e(nic->ioaddr,i));
GO_WINDOW(nic->ioaddr,2);
outw(ntohs(p[i]), nic->ioaddr + EP_W2_ADDR_0 + (i * 2));
}
printf("Ethernet address: %!\n", nic->node_addr);
t509_reset(nic);
nic->nic_op = &t509_operations;
return 1;
}
/*
* Local variables:
* c-basic-offset: 8
* End:
*/