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GNU Mach 1.0
/*
* AT&T GIS (nee NCR) WaveLAN card:
* An Ethernet-like radio transceiver
* controlled by an Intel 82586 coprocessor.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/interrupt.h>
#include <linux/stat.h>
#include <linux/ptrace.h>
#include <linux/ioport.h>
#include <linux/in.h>
#include <linux/string.h>
#include <linux/delay.h>
#include <asm/system.h>
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/dma.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/malloc.h>
#include <linux/timer.h>
#include <linux/proc_fs.h>
#define STRUCT_CHECK 1
#ifdef MACH
#include <net/i82586.h>
#else
#include "i82586.h"
#endif
#include "wavelan.h"
#ifndef WAVELAN_DEBUG
#define WAVELAN_DEBUG 0
#endif /* WAVELAN_DEBUG */
#define WATCHDOG_JIFFIES 512 /* TODO: express in HZ. */
#define ENABLE_FULL_PROMISCUOUS 0x10000
#define nels(a) (sizeof(a) / sizeof(a[0]))
typedef struct device device;
typedef struct enet_statistics en_stats;
typedef struct net_local net_local;
typedef struct timer_list timer_list;
struct net_local
{
en_stats stats;
unsigned int tx_n_in_use;
unsigned char nwid[2];
unsigned short hacr;
unsigned short rx_head;
unsigned short rx_last;
unsigned short tx_first_free;
unsigned short tx_first_in_use;
unsigned int nresets;
unsigned int correct_nwid;
unsigned int wrong_nwid;
unsigned int promiscuous;
unsigned int full_promiscuous;
timer_list watchdog;
device *dev;
net_local *prev;
net_local *next;
};
extern int wavelan_probe(device *); /* See Space.c */
static const char *version = "wavelan.c:v7 95/4/8\n";
/*
* Entry point forward declarations.
*/
static int wavelan_probe1(device *, unsigned short);
static int wavelan_open(device *);
static int wavelan_send_packet(struct sk_buff *, device *);
static void wavelan_interrupt(int, struct pt_regs *);
static int wavelan_close(device *);
static en_stats *wavelan_get_stats(device *);
static void wavelan_set_multicast_list(device *);
static int wavelan_get_info(char*, char**, off_t, int, int);
/*
* Other forward declarations.
*/
static void wavelan_cu_show_one(device *, net_local *, int, unsigned short);
static void wavelan_cu_start(device *);
static void wavelan_ru_start(device *);
static void wavelan_watchdog(unsigned long);
#if 0
static void wavelan_psa_show(psa_t *);
static void wavelan_mmc_show(unsigned short);
#endif /* 0 */
static void wavelan_scb_show(unsigned short);
static void wavelan_ru_show(device *);
static void wavelan_cu_show(device *);
static void wavelan_dev_show(device *);
static void wavelan_local_show(device *);
static unsigned int wavelan_debug = WAVELAN_DEBUG;
static net_local *first_wavelan = (net_local *)0;
static
unsigned long
wavelan_splhi(void)
{
unsigned long flags;
save_flags(flags);
cli();
return flags;
}
static
void
wavelan_splx(unsigned long flags)
{
restore_flags(flags);
}
static
unsigned short
hasr_read(unsigned short ioaddr)
{
return inw(HASR(ioaddr));
}
static
void
hacr_write(unsigned short ioaddr, int hacr)
{
outw(hacr, HACR(ioaddr));
}
static
void
hacr_write_slow(unsigned short ioaddr, int hacr)
{
hacr_write(ioaddr, hacr);
/* delay might only be needed sometimes */
udelay(1000);
}
/*
* Set the channel attention bit.
*/
static
void
set_chan_attn(unsigned short ioaddr, unsigned short current_hacr)
{
hacr_write(ioaddr, current_hacr | HACR_CA);
}
/*
* Reset, and then set host adaptor into default mode.
*/
static
void
wavelan_reset(unsigned short ioaddr)
{
hacr_write_slow(ioaddr, HACR_RESET);
hacr_write(ioaddr, HACR_DEFAULT);
}
static
void
wavelan_16_off(unsigned short ioaddr, unsigned short hacr)
{
hacr &= ~HACR_16BITS;
hacr_write(ioaddr, hacr);
}
static
void
wavelan_16_on(unsigned short ioaddr, unsigned short hacr)
{
hacr |= HACR_16BITS;
hacr_write(ioaddr, hacr);
}
static
void
wavelan_ints_off(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned long x;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
x = wavelan_splhi();
lp->hacr &= ~HACR_INTRON;
hacr_write(ioaddr, lp->hacr);
wavelan_splx(x);
}
static
void
wavelan_ints_on(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned long x;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
x = wavelan_splhi();
lp->hacr |= HACR_INTRON;
hacr_write(ioaddr, lp->hacr);
wavelan_splx(x);
}
/*
* Read bytes from the PSA.
*/
static
void
psa_read(unsigned short ioaddr, unsigned short hacr, int o, unsigned char *b, int n)
{
wavelan_16_off(ioaddr, hacr);
while (n-- > 0)
{
outw(o, PIOR2(ioaddr));
o++;
*b++ = inb(PIOP2(ioaddr));
}
wavelan_16_on(ioaddr, hacr);
}
#if defined(IRQ_SET_WORKS)
/*
* Write bytes to the PSA.
*/
static
void
psa_write(unsigned short ioaddr, unsigned short hacr, int o, unsigned char *b, int n)
{
wavelan_16_off(ioaddr, hacr);
while (n-- > 0)
{
outw(o, PIOR2(ioaddr));
o++;
outb(*b, PIOP2(ioaddr));
b++;
}
wavelan_16_on(ioaddr, hacr);
}
#endif /* defined(IRQ_SET_WORKS) */
/*
* Read bytes from the on-board RAM.
*/
static
void
obram_read(unsigned short ioaddr, unsigned short o, unsigned char *b, int n)
{
n = (n + 1) / (sizeof(unsigned short) / sizeof(unsigned char));
outw(o, PIOR1(ioaddr));
insw(PIOP1(ioaddr), (unsigned short *)b, n);
}
/*
* Write bytes to the on-board RAM.
*/
static
void
obram_write(unsigned short ioaddr, unsigned short o, unsigned char *b, int n)
{
n = (n + 1) / (sizeof(unsigned short) / sizeof(unsigned char));
outw(o, PIOR1(ioaddr));
outsw(PIOP1(ioaddr), (unsigned short *)b, n);
}
/*
* Read bytes from the MMC.
*/
static
void
mmc_read(unsigned short ioaddr, unsigned short o, unsigned char *b, int n)
{
while (n-- > 0)
{
while (inw(HASR(ioaddr)) & HASR_MMC_BUSY)
;
outw(o << 1, MMCR(ioaddr));
o++;
while (inw(HASR(ioaddr)) & HASR_MMC_BUSY)
;
*b++ = (unsigned char)(inw(MMCR(ioaddr)) >> 8);
}
}
/*
* Write bytes to the MMC.
*/
static
void
mmc_write(unsigned short ioaddr, unsigned short o, unsigned char *b, int n)
{
while (n-- > 0)
{
while (inw(HASR(ioaddr)) & HASR_MMC_BUSY)
;
outw((unsigned short)(((unsigned short)*b << 8) | (o << 1) | 1), MMCR(ioaddr));
b++;
o++;
}
}
static int irqvals[] =
{
0, 0, 0, 0x01,
0x02, 0x04, 0, 0x08,
0, 0, 0x10, 0x20,
0x40, 0, 0, 0x80,
};
#if defined(IRQ_SET_WORKS)
static
int
wavelan_unmap_irq(int irq, unsigned char *irqval)
{
if (irq < 0 || irq >= nels(irqvals) || irqvals[irq] == 0)
return -1;
*irqval = (unsigned char)irqvals[irq];
return 0;
}
#endif /* defined(IRQ_SET_WORKS) */
/*
* Map values from the irq parameter register to irq numbers.
*/
static
int
wavelan_map_irq(unsigned char irqval)
{
int irq;
for (irq = 0; irq < nels(irqvals); irq++)
{
if (irqvals[irq] == (int)irqval)
return irq;
}
return -1;
}
/*
* Initialize the Modem Management Controller.
*/
static
void
wavelan_mmc_init(device *dev, psa_t *psa)
{
unsigned short ioaddr;
net_local *lp;
mmw_t m;
int configured;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
memset(&m, 0x00, sizeof(m));
/*
* configured = psa->psa_conf_status & 1;
*
* For now we use the persistent PSA
* information as little as possible, thereby
* allowing us to return to the same known state
* during a hardware reset.
*/
configured = 0;
/*
* Set default modem control parameters.
* See NCR document 407-0024326 Rev. A.
*/
m.mmw_jabber_enable = 0x01;
m.mmw_anten_sel = MMW_ANTEN_SEL_ALG_EN;
m.mmw_ifs = 0x20;
m.mmw_mod_delay = 0x04;
m.mmw_jam_time = 0x38;
m.mmw_encr_enable = 0;
m.mmw_des_io_invert = 0;
m.mmw_freeze = 0;
m.mmw_decay_prm = 0;
m.mmw_decay_updat_prm = 0;
if (configured)
{
/*
* Use configuration defaults from parameter storage area.
*/
if (psa->psa_undefined & 1)
m.mmw_loopt_sel = 0x00;
else
m.mmw_loopt_sel = MMW_LOOPT_SEL_UNDEFINED;
m.mmw_thr_pre_set = psa->psa_thr_pre_set & 0x3F;
m.mmw_quality_thr = psa->psa_quality_thr & 0x0F;
}
else
{
if (lp->promiscuous && lp->full_promiscuous)
m.mmw_loopt_sel = MMW_LOOPT_SEL_UNDEFINED;
else
m.mmw_loopt_sel = 0x00;
/*
* 0x04 for AT,
* 0x01 for MCA.
*/
if (psa->psa_comp_number & 1)
m.mmw_thr_pre_set = 0x01;
else
m.mmw_thr_pre_set = 0x04;
m.mmw_quality_thr = 0x03;
}
m.mmw_netw_id_l = lp->nwid[1];
m.mmw_netw_id_h = lp->nwid[0];
mmc_write(ioaddr, 0, (unsigned char *)&m, sizeof(m));
}
static
void
wavelan_ack(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned short scb_cs;
int i;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&scb_cs, sizeof(scb_cs));
scb_cs &= SCB_ST_INT;
if (scb_cs == 0)
return;
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
set_chan_attn(ioaddr, lp->hacr);
for (i = 1000; i > 0; i--)
{
obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
if (scb_cs == 0)
break;
udelay(1000);
}
if (i <= 0)
printk("%s: wavelan_ack(): board not accepting command.\n", dev->name);
}
/*
* Set channel attention bit and busy wait until command has
* completed, then acknowledge the command completion.
*/
static
int
wavelan_synchronous_cmd(device *dev, const char *str)
{
unsigned short ioaddr;
net_local *lp;
unsigned short scb_cmd;
ach_t cb;
int i;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
scb_cmd = SCB_CMD_CUC & SCB_CMD_CUC_GO;
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cmd, sizeof(scb_cmd));
set_chan_attn(ioaddr, lp->hacr);
for (i = 64; i > 0; i--)
{
obram_read(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb));
if (cb.ac_status & AC_SFLD_C)
break;
udelay(1000);
}
if (i <= 0 || !(cb.ac_status & AC_SFLD_OK))
{
printk("%s: %s failed; status = 0x%x\n", dev->name, str, cb.ac_status);
wavelan_scb_show(ioaddr);
return -1;
}
wavelan_ack(dev);
return 0;
}
static
int
wavelan_hardware_reset(device *dev)
{
unsigned short ioaddr;
psa_t psa;
net_local *lp;
scp_t scp;
iscp_t iscp;
scb_t scb;
ach_t cb;
int i;
ac_cfg_t cfg;
ac_ias_t ias;
if (wavelan_debug > 0)
printk("%s: ->wavelan_hardware_reset(dev=0x%x)\n", dev->name, (unsigned int)dev);
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
lp->nresets++;
wavelan_reset(ioaddr);
lp->hacr = HACR_DEFAULT;
/*
* Clear the onboard RAM.
*/
{
unsigned char zeroes[512];
memset(&zeroes[0], 0x00, sizeof(zeroes));
for (i = 0; i < I82586_MEMZ; i += sizeof(zeroes))
obram_write(ioaddr, i, &zeroes[0], sizeof(zeroes));
}
psa_read(ioaddr, lp->hacr, 0, (unsigned char *)&psa, sizeof(psa));
wavelan_mmc_init(dev, &psa);
/*
* Construct the command unit structures:
* scp, iscp, scb, cb.
*/
memset(&scp, 0x00, sizeof(scp));
scp.scp_sysbus = SCP_SY_16BBUS;
scp.scp_iscpl = OFFSET_ISCP;
obram_write(ioaddr, OFFSET_SCP, (unsigned char *)&scp, sizeof(scp));
memset(&iscp, 0x00, sizeof(iscp));
iscp.iscp_busy = 1;
iscp.iscp_offset = OFFSET_SCB;
obram_write(ioaddr, OFFSET_ISCP, (unsigned char *)&iscp, sizeof(iscp));
memset(&scb, 0x00, sizeof(scb));
scb.scb_command = SCB_CMD_RESET;
scb.scb_cbl_offset = OFFSET_CU;
scb.scb_rfa_offset = OFFSET_RU;
obram_write(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb));
set_chan_attn(ioaddr, lp->hacr);
for (i = 1000; i > 0; i--)
{
obram_read(ioaddr, OFFSET_ISCP, (unsigned char *)&iscp, sizeof(iscp));
if (iscp.iscp_busy == (unsigned short)0)
break;
udelay(1000);
}
if (i <= 0)
{
printk("%s: wavelan_hardware_reset(): iscp_busy timeout.\n", dev->name);
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
for (i = 15; i > 0; i--)
{
obram_read(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb));
if (scb.scb_status == (SCB_ST_CX | SCB_ST_CNA))
break;
udelay(1000);
}
if (i <= 0)
{
printk("%s: wavelan_hardware_reset(): status: expected 0x%02x, got 0x%02x.\n", dev->name, SCB_ST_CX | SCB_ST_CNA, scb.scb_status);
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
wavelan_ack(dev);
memset(&cb, 0x00, sizeof(cb));
cb.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_diagnose);
cb.ac_link = OFFSET_CU;
obram_write(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb));
if (wavelan_synchronous_cmd(dev, "diag()") == -1)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
obram_read(ioaddr, OFFSET_CU, (unsigned char *)&cb, sizeof(cb));
if (cb.ac_status & AC_SFLD_FAIL)
{
printk("%s: wavelan_hardware_reset(): i82586 Self Test failed.\n", dev->name);
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
memset(&cfg, 0x00, sizeof(cfg));
#if 0
/*
* The default board configuration.
*/
cfg.fifolim_bytecnt = 0x080c;
cfg.addrlen_mode = 0x2600;
cfg.linprio_interframe = 0x7820; /* IFS=120, ACS=2 */
cfg.slot_time = 0xf00c; /* slottime=12 */
cfg.hardware = 0x0008; /* tx even w/o CD */
cfg.min_frame_len = 0x0040;
#endif /* 0 */
/*
* For Linux we invert AC_CFG_ALOC(..) so as to conform
* to the way that net packets reach us from above.
* (See also ac_tx_t.)
*/
cfg.cfg_byte_cnt = AC_CFG_BYTE_CNT(sizeof(ac_cfg_t) - sizeof(ach_t));
cfg.cfg_fifolim = AC_CFG_FIFOLIM(8);
cfg.cfg_byte8 = AC_CFG_SAV_BF(0) |
AC_CFG_SRDY(0);
cfg.cfg_byte9 = AC_CFG_ELPBCK(0) |
AC_CFG_ILPBCK(0) |
AC_CFG_PRELEN(AC_CFG_PLEN_2) |
AC_CFG_ALOC(1) |
AC_CFG_ADDRLEN(WAVELAN_ADDR_SIZE);
cfg.cfg_byte10 = AC_CFG_BOFMET(0) |
AC_CFG_ACR(0) |
AC_CFG_LINPRIO(0);
cfg.cfg_ifs = 32;
cfg.cfg_slotl = 0;
cfg.cfg_byte13 = AC_CFG_RETRYNUM(15) |
AC_CFG_SLTTMHI(2);
cfg.cfg_byte14 = AC_CFG_FLGPAD(0) |
AC_CFG_BTSTF(0) |
AC_CFG_CRC16(0) |
AC_CFG_NCRC(0) |
AC_CFG_TNCRS(1) |
AC_CFG_MANCH(0) |
AC_CFG_BCDIS(0) |
AC_CFG_PRM(lp->promiscuous);
cfg.cfg_byte15 = AC_CFG_ICDS(0) |
AC_CFG_CDTF(0) |
AC_CFG_ICSS(0) |
AC_CFG_CSTF(0);
/*
cfg.cfg_min_frm_len = AC_CFG_MNFRM(64);
*/
cfg.cfg_min_frm_len = AC_CFG_MNFRM(8);
cfg.cfg_h.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_configure);
cfg.cfg_h.ac_link = OFFSET_CU;
obram_write(ioaddr, OFFSET_CU, (unsigned char *)&cfg, sizeof(cfg));
if (wavelan_synchronous_cmd(dev, "reset()-configure") == -1)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
memset(&ias, 0x00, sizeof(ias));
ias.ias_h.ac_command = AC_CFLD_EL | (AC_CFLD_CMD & acmd_ia_setup);
ias.ias_h.ac_link = OFFSET_CU;
memcpy(&ias.ias_addr[0], (unsigned char *)&dev->dev_addr[0], sizeof(ias.ias_addr));
obram_write(ioaddr, OFFSET_CU, (unsigned char *)&ias, sizeof(ias));
if (wavelan_synchronous_cmd(dev, "reset()-address") == -1)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): -1\n", dev->name);
return -1;
}
wavelan_ints_on(dev);
if (wavelan_debug > 4)
wavelan_scb_show(ioaddr);
wavelan_ru_start(dev);
wavelan_cu_start(dev);
if (wavelan_debug > 0)
printk("%s: <-wavelan_hardware_reset(): 0\n", dev->name);
return 0;
}
#if STRUCT_CHECK == 1
static
const char *
wavelan_struct_check(void)
{
#define SC(t,s,n) if (sizeof(t) != s) return n
SC(psa_t, PSA_SIZE, "psa_t");
SC(mmw_t, MMW_SIZE, "mmw_t");
SC(mmr_t, MMR_SIZE, "mmr_t");
SC(ha_t, HA_SIZE, "ha_t");
#undef SC
return (char *)0;
}
#endif /* STRUCT_CHECK == 1 */
/*
* Check for a network adaptor of this type.
* Return '0' iff one exists.
* (There seem to be different interpretations of
* the initial value of dev->base_addr.
* We follow the example in drivers/net/ne.c.)
*/
int
wavelan_probe(device *dev)
{
int i;
int r;
short base_addr;
static unsigned short iobase[] =
{
#if 0
Leave out 0x3C0 for now -- seems to clash
with some video controllers.
Leave out the others too -- we will always
use 0x390 and leave 0x300 for the Ethernet device.
0x300, 0x390, 0x3E0, 0x3C0,
#endif /* 0 */
0x390,
};
if (wavelan_debug > 0)
printk("%s: ->wavelan_probe(dev=0x%x (base_addr=0x%x))\n", dev->name, (unsigned int)dev, (unsigned int)dev->base_addr);
#if STRUCT_CHECK == 1
if (wavelan_struct_check() != (char *)0)
{
printk("%s: structure/compiler botch: \"%s\"\n", dev->name, wavelan_struct_check());
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe(): ENODEV\n", dev->name);
return ENODEV;
}
#endif /* STRUCT_CHECK == 1 */
base_addr = dev->base_addr;
if (base_addr < 0)
{
/*
* Don't probe at all.
*/
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe(): ENXIO\n", dev->name);
return ENXIO;
}
if (base_addr > 0x100)
{
/*
* Check a single specified location.
*/
r = wavelan_probe1(dev, base_addr);
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe(): %d\n", dev->name, r);
return r;
}
for (i = 0; i < nels(iobase); i++)
{
if (check_region(iobase[i], sizeof(ha_t)))
continue;
if (wavelan_probe1(dev, iobase[i]) == 0)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe(): 0\n", dev->name);
proc_net_register(&(struct proc_dir_entry) {
PROC_NET_WAVELAN, 7, "wavelan",
S_IFREG | S_IRUGO, 1, 0, 0,
0, &proc_net_inode_operations,
wavelan_get_info
});
return 0;
}
}
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe(): ENODEV\n", dev->name);
return ENODEV;
}
static
int
wavelan_probe1(device *dev, unsigned short ioaddr)
{
psa_t psa;
int irq;
int i;
net_local *lp;
int enable_full_promiscuous;
if (wavelan_debug > 0)
printk("%s: ->wavelan_probe1(dev=0x%x, ioaddr=0x%x)\n", dev->name, (unsigned int)dev, ioaddr);
wavelan_reset(ioaddr);
psa_read(ioaddr, HACR_DEFAULT, 0, (unsigned char *)&psa, sizeof(psa));
/*
* Check the first three octets of the MAC address
* for the manufacturer's code.
*/
if
(
psa.psa_univ_mac_addr[0] != SA_ADDR0
||
psa.psa_univ_mac_addr[1] != SA_ADDR1
||
psa.psa_univ_mac_addr[2] != SA_ADDR2
)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe1(): ENODEV\n", dev->name);
return ENODEV;
}
printk("%s: WaveLAN at %#x,", dev->name, ioaddr);
if (dev->irq != 0)
{
printk("[WARNING: explicit IRQ value %d ignored: using PSA value instead]", dev->irq);
#if defined(IRQ_SET_WORKS)
Leave this out until I can get it to work -- BJ.
if (wavelan_unmap_irq(dev->irq, &psa.psa_int_req_no) == -1)
{
printk(" could not wavelan_unmap_irq(%d, ..) -- ignored.\n", dev->irq);
dev->irq = 0;
}
else
{
psa_write(ioaddr, HACR_DEFAULT, (char *)&psa.psa_int_req_no - (char *)&psa, (unsigned char *)&psa.psa_int_req_no, sizeof(psa.psa_int_req_no));
wavelan_reset(ioaddr);
}
#endif /* defined(IRQ_SET_WORKS) */
}
if ((irq = wavelan_map_irq(psa.psa_int_req_no)) == -1)
{
printk(" could not wavelan_map_irq(%d).\n", psa.psa_int_req_no);
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe1(): EAGAIN\n", dev->name);
return EAGAIN;
}
dev->irq = irq;
request_region(ioaddr, sizeof(ha_t), "wavelan");
dev->base_addr = ioaddr;
/*
* The third numeric argument to LILO's
* `ether=' control line arrives here as `dev->mem_start'.
*
* If bit 16 of dev->mem_start is non-zero we enable
* full promiscuity.
*
* If either of the least significant two bytes of
* dev->mem_start are non-zero we use them instead
* of the PSA NWID.
*/
enable_full_promiscuous = (dev->mem_start & ENABLE_FULL_PROMISCUOUS) == ENABLE_FULL_PROMISCUOUS;
dev->mem_start &= ~ENABLE_FULL_PROMISCUOUS;
if (dev->mem_start != 0)
{
psa.psa_nwid[0] = (dev->mem_start >> 8) & 0xFF;
psa.psa_nwid[1] = (dev->mem_start >> 0) & 0xFF;
}
dev->mem_start = 0x0000;
dev->mem_end = 0x0000;
dev->if_port = 0;
memcpy(&dev->dev_addr[0], &psa.psa_univ_mac_addr[0], WAVELAN_ADDR_SIZE);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? " " : ":", dev->dev_addr[i]);
printk(", IRQ %d", dev->irq);
if (enable_full_promiscuous)
printk(", promisc");
printk(", nwid 0x%02x%02x", psa.psa_nwid[0], psa.psa_nwid[1]);
printk(", PC");
switch (psa.psa_comp_number)
{
case PSA_COMP_PC_AT_915:
case PSA_COMP_PC_AT_2400:
printk("-AT");
break;
case PSA_COMP_PC_MC_915:
case PSA_COMP_PC_MC_2400:
printk("-MC");
break;
case PSA_COMP_PCMCIA_915:
printk("MCIA");
break;
default:
printk("???");
break;
}
printk(", ");
switch (psa.psa_subband)
{
case PSA_SUBBAND_915:
printk("915");
break;
case PSA_SUBBAND_2425:
printk("2425");
break;
case PSA_SUBBAND_2460:
printk("2460");
break;
case PSA_SUBBAND_2484:
printk("2484");
break;
case PSA_SUBBAND_2430_5:
printk("2430.5");
break;
default:
printk("???");
break;
}
printk(" MHz");
printk("\n");
if (wavelan_debug > 0)
printk(version);
dev->priv = kmalloc(sizeof(net_local), GFP_KERNEL);
if (dev->priv == NULL)
return -ENOMEM;
memset(dev->priv, 0x00, sizeof(net_local));
lp = (net_local *)dev->priv;
if (first_wavelan == (net_local *)0)
{
first_wavelan = lp;
lp->prev = lp;
lp->next = lp;
}
else
{
lp->prev = first_wavelan->prev;
lp->next = first_wavelan;
first_wavelan->prev->next = lp;
first_wavelan->prev = lp;
}
lp->dev = dev;
lp->hacr = HACR_DEFAULT;
lp->full_promiscuous = enable_full_promiscuous;
lp->nwid[0] = psa.psa_nwid[0];
lp->nwid[1] = psa.psa_nwid[1];
lp->watchdog.function = wavelan_watchdog;
lp->watchdog.data = (unsigned long)dev;
dev->open = wavelan_open;
dev->stop = wavelan_close;
dev->hard_start_xmit = wavelan_send_packet;
dev->get_stats = wavelan_get_stats;
dev->set_multicast_list = &wavelan_set_multicast_list;
/*
* Fill in the fields of the device structure
* with ethernet-generic values.
*/
ether_setup(dev);
dev->flags &= ~IFF_MULTICAST; /* Not yet supported */
dev->mtu = WAVELAN_MTU;
if (wavelan_debug > 0)
printk("%s: <-wavelan_probe1(): 0\n", dev->name);
return 0;
}
/*
* Construct the fd and rbd structures.
* Start the receive unit.
*/
static
void
wavelan_ru_start(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned short scb_cs;
fd_t fd;
rbd_t rbd;
unsigned short rx;
unsigned short rx_next;
int i;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&scb_cs, sizeof(scb_cs));
if ((scb_cs & SCB_ST_RUS) == SCB_ST_RUS_RDY)
return;
lp->rx_head = OFFSET_RU;
for (i = 0, rx = lp->rx_head; i < NRXBLOCKS; i++, rx = rx_next)
{
rx_next = (i == NRXBLOCKS - 1) ? lp->rx_head : rx + RXBLOCKZ;
fd.fd_status = 0;
fd.fd_command = (i == NRXBLOCKS - 1) ? FD_COMMAND_EL : 0;
fd.fd_link_offset = rx_next;
fd.fd_rbd_offset = rx + sizeof(fd);
obram_write(ioaddr, rx, (unsigned char *)&fd, sizeof(fd));
rbd.rbd_status = 0;
rbd.rbd_next_rbd_offset = I82586NULL;
rbd.rbd_bufl = rx + sizeof(fd) + sizeof(rbd);
rbd.rbd_bufh = 0;
rbd.rbd_el_size = RBD_EL | (RBD_SIZE & MAXDATAZ);
obram_write(ioaddr, rx + sizeof(fd), (unsigned char *)&rbd, sizeof(rbd));
lp->rx_last = rx;
}
obram_write(ioaddr, scboff(OFFSET_SCB, scb_rfa_offset), (unsigned char *)&lp->rx_head, sizeof(lp->rx_head));
scb_cs = SCB_CMD_RUC_GO;
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
set_chan_attn(ioaddr, lp->hacr);
for (i = 1000; i > 0; i--)
{
obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
if (scb_cs == 0)
break;
udelay(1000);
}
if (i <= 0)
printk("%s: wavelan_ru_start(): board not accepting command.\n", dev->name);
}
/*
* Initialise the transmit blocks.
* Start the command unit executing the NOP
* self-loop of the first transmit block.
*/
static
void
wavelan_cu_start(device *dev)
{
unsigned short ioaddr;
net_local *lp;
int i;
unsigned short txblock;
unsigned short first_nop;
unsigned short scb_cs;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
lp->tx_first_free = OFFSET_CU;
lp->tx_first_in_use = I82586NULL;
for
(
i = 0, txblock = OFFSET_CU;
i < NTXBLOCKS;
i++, txblock += TXBLOCKZ
)
{
ac_tx_t tx;
ac_nop_t nop;
tbd_t tbd;
unsigned short tx_addr;
unsigned short nop_addr;
unsigned short tbd_addr;
unsigned short buf_addr;
tx_addr = txblock;
nop_addr = tx_addr + sizeof(tx);
tbd_addr = nop_addr + sizeof(nop);
buf_addr = tbd_addr + sizeof(tbd);
tx.tx_h.ac_status = 0;
tx.tx_h.ac_command = acmd_transmit | AC_CFLD_I;
tx.tx_h.ac_link = nop_addr;
tx.tx_tbd_offset = tbd_addr;
obram_write(ioaddr, tx_addr, (unsigned char *)&tx, sizeof(tx));
nop.nop_h.ac_status = 0;
nop.nop_h.ac_command = acmd_nop;
nop.nop_h.ac_link = nop_addr;
obram_write(ioaddr, nop_addr, (unsigned char *)&nop, sizeof(nop));
tbd.tbd_status = TBD_STATUS_EOF;
tbd.tbd_next_bd_offset = I82586NULL;
tbd.tbd_bufl = buf_addr;
tbd.tbd_bufh = 0;
obram_write(ioaddr, tbd_addr, (unsigned char *)&tbd, sizeof(tbd));
}
first_nop = OFFSET_CU + (NTXBLOCKS - 1) * TXBLOCKZ + sizeof(ac_tx_t);
obram_write(ioaddr, scboff(OFFSET_SCB, scb_cbl_offset), (unsigned char *)&first_nop, sizeof(first_nop));
scb_cs = SCB_CMD_CUC_GO;
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
set_chan_attn(ioaddr, lp->hacr);
for (i = 1000; i > 0; i--)
{
obram_read(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cs, sizeof(scb_cs));
if (scb_cs == 0)
break;
udelay(1000);
}
if (i <= 0)
printk("%s: wavelan_cu_start(): board not accepting command.\n", dev->name);
lp->tx_n_in_use = 0;
dev->tbusy = 0;
}
static
int
wavelan_open(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned long x;
int r;
if (wavelan_debug > 0)
printk("%s: ->wavelan_open(dev=0x%x)\n", dev->name, (unsigned int)dev);
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
if (dev->irq == 0)
{
if (wavelan_debug > 0)
printk("%s: <-wavelan_open(): -ENXIO\n", dev->name);
return -ENXIO;
}
if
(
irq2dev_map[dev->irq] != (device *)0
/* This is always true, but avoid the false IRQ. */
||
(irq2dev_map[dev->irq] = dev) == (device *)0
||
request_irq(dev->irq, &wavelan_interrupt, 0, "WaveLAN") != 0
)
{
irq2dev_map[dev->irq] = (device *)0;
if (wavelan_debug > 0)
printk("%s: <-wavelan_open(): -EAGAIN\n", dev->name);
return -EAGAIN;
}
x = wavelan_splhi();
if ((r = wavelan_hardware_reset(dev)) != -1)
{
dev->interrupt = 0;
dev->start = 1;
}
wavelan_splx(x);
if (r == -1)
{
free_irq(dev->irq);
irq2dev_map[dev->irq] = (device *)0;
if (wavelan_debug > 0)
printk("%s: <-wavelan_open(): -EAGAIN(2)\n", dev->name);
return -EAGAIN;
}
MOD_INC_USE_COUNT;
if (wavelan_debug > 0)
printk("%s: <-wavelan_open(): 0\n", dev->name);
return 0;
}
static
void
hardware_send_packet(device *dev, void *buf, short length)
{
unsigned short ioaddr;
net_local *lp;
unsigned short txblock;
unsigned short txpred;
unsigned short tx_addr;
unsigned short nop_addr;
unsigned short tbd_addr;
unsigned short buf_addr;
ac_tx_t tx;
ac_nop_t nop;
tbd_t tbd;
unsigned long x;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
x = wavelan_splhi();
txblock = lp->tx_first_free;
txpred = txblock - TXBLOCKZ;
if (txpred < OFFSET_CU)
txpred += NTXBLOCKS * TXBLOCKZ;
lp->tx_first_free += TXBLOCKZ;
if (lp->tx_first_free >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ)
lp->tx_first_free -= NTXBLOCKS * TXBLOCKZ;
/*
if (lp->tx_n_in_use > 0)
printk("%c", "0123456789abcdefghijk"[lp->tx_n_in_use]);
*/
lp->tx_n_in_use++;
tx_addr = txblock;
nop_addr = tx_addr + sizeof(tx);
tbd_addr = nop_addr + sizeof(nop);
buf_addr = tbd_addr + sizeof(tbd);
/*
* Transmit command.
*/
tx.tx_h.ac_status = 0;
obram_write(ioaddr, toff(ac_tx_t, tx_addr, tx_h.ac_status), (unsigned char *)&tx.tx_h.ac_status, sizeof(tx.tx_h.ac_status));
/*
* NOP command.
*/
nop.nop_h.ac_status = 0;
obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), (unsigned char *)&nop.nop_h.ac_status, sizeof(nop.nop_h.ac_status));
nop.nop_h.ac_link = nop_addr;
obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), (unsigned char *)&nop.nop_h.ac_link, sizeof(nop.nop_h.ac_link));
/*
* Transmit buffer descriptor.
*/
tbd.tbd_status = TBD_STATUS_EOF | (TBD_STATUS_ACNT & length);
tbd.tbd_next_bd_offset = I82586NULL;
tbd.tbd_bufl = buf_addr;
tbd.tbd_bufh = 0;
obram_write(ioaddr, tbd_addr, (unsigned char *)&tbd, sizeof(tbd));
/*
* Data.
*/
obram_write(ioaddr, buf_addr, buf, length);
/*
* Overwrite the predecessor NOP link
* so that it points to this txblock.
*/
nop_addr = txpred + sizeof(tx);
nop.nop_h.ac_status = 0;
obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_status), (unsigned char *)&nop.nop_h.ac_status, sizeof(nop.nop_h.ac_status));
nop.nop_h.ac_link = txblock;
obram_write(ioaddr, toff(ac_nop_t, nop_addr, nop_h.ac_link), (unsigned char *)&nop.nop_h.ac_link, sizeof(nop.nop_h.ac_link));
if (lp->tx_first_in_use == I82586NULL)
lp->tx_first_in_use = txblock;
if (lp->tx_n_in_use < NTXBLOCKS - 1)
dev->tbusy = 0;
dev->trans_start = jiffies;
if (lp->watchdog.next == (timer_list *)0)
wavelan_watchdog((unsigned long)dev);
wavelan_splx(x);
if (wavelan_debug > 4)
{
unsigned char *a;
a = (unsigned char *)buf;
printk
(
"%s: tx: dest %02x:%02x:%02x:%02x:%02x:%02x, length %d, tbd.tbd_bufl 0x%x.\n",
dev->name,
a[0], a[1], a[2], a[3], a[4], a[5],
length,
buf_addr
);
}
}
static
int
wavelan_send_packet(struct sk_buff *skb, device *dev)
{
unsigned short ioaddr;
ioaddr = dev->base_addr;
if (dev->tbusy)
{
/*
* If we get here, some higher level
* has decided we are broken.
*/
int tickssofar;
tickssofar = jiffies - dev->trans_start;
/*
* But for the moment, we will rely on wavelan_watchdog()
* instead as it allows finer control over exactly when we
* make the determination of failure.
*
if (tickssofar < 5)
*/
return 1;
wavelan_scb_show(ioaddr);
wavelan_ru_show(dev);
wavelan_cu_show(dev);
wavelan_dev_show(dev);
wavelan_local_show(dev);
printk("%s: transmit timed out -- resetting board.\n", dev->name);
(void)wavelan_hardware_reset(dev);
}
/*
* If some higher layer thinks we've missed
* a tx-done interrupt we are passed NULL.
* Caution: dev_tint() handles the cli()/sti() itself.
*/
if (skb == (struct sk_buff *)0)
{
dev_tint(dev);
return 0;
}
/*
* Block a timer-based transmit from overlapping.
*/
if (set_bit(0, (void *)&dev->tbusy) == 0)
{
short length;
unsigned char *buf;
length = (ETH_ZLEN < skb->len) ? skb->len : ETH_ZLEN;
buf = skb->data;
hardware_send_packet(dev, buf, length);
}
else
printk("%s: Transmitter access conflict.\n", dev->name);
dev_kfree_skb(skb, FREE_WRITE);
return 0;
}
#if 0
static
int
addrcmp(unsigned char *a0, unsigned char *a1)
{
int i;
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
{
if (a0[i] != a1[i])
return a0[i] - a1[i];
}
return 0;
}
#endif /* 0 */
/*
* Transfer as many packets as we can
* from the device RAM.
* Called by the interrupt handler.
*/
static
void
wavelan_receive(device *dev)
{
unsigned short ioaddr;
net_local *lp;
int nreaped;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
nreaped = 0;
for (;;)
{
fd_t fd;
rbd_t rbd;
ushort pkt_len;
int sksize;
struct sk_buff *skb;
obram_read(ioaddr, lp->rx_head, (unsigned char *)&fd, sizeof(fd));
if ((fd.fd_status & FD_STATUS_C) != FD_STATUS_C)
break;
nreaped++;
if
(
(fd.fd_status & (FD_STATUS_B | FD_STATUS_OK))
!=
(FD_STATUS_B | FD_STATUS_OK)
)
{
/*
* Not sure about this one -- it does not seem
* to be an error so we will keep quiet about it.
if ((fd.fd_status & FD_STATUS_B) != FD_STATUS_B)
printk("%s: frame not consumed by RU.\n", dev->name);
*/
if ((fd.fd_status & FD_STATUS_OK) != FD_STATUS_OK)
printk("%s: frame not received successfully.\n", dev->name);
}
if ((fd.fd_status & (FD_STATUS_S6 | FD_STATUS_S7 | FD_STATUS_S8 | FD_STATUS_S9 | FD_STATUS_S10 | FD_STATUS_S11)) != 0)
{
lp->stats.rx_errors++;
if ((fd.fd_status & FD_STATUS_S6) != 0)
printk("%s: no EOF flag.\n", dev->name);
if ((fd.fd_status & FD_STATUS_S7) != 0)
{
lp->stats.rx_length_errors++;
printk("%s: frame too short.\n", dev->name);
}
if ((fd.fd_status & FD_STATUS_S8) != 0)
{
lp->stats.rx_over_errors++;
printk("%s: rx DMA overrun.\n", dev->name);
}
if ((fd.fd_status & FD_STATUS_S9) != 0)
{
lp->stats.rx_fifo_errors++;
printk("%s: ran out of resources.\n", dev->name);
}
if ((fd.fd_status & FD_STATUS_S10) != 0)
{
lp->stats.rx_frame_errors++;
printk("%s: alignment error.\n", dev->name);
}
if ((fd.fd_status & FD_STATUS_S11) != 0)
{
lp->stats.rx_crc_errors++;
printk("%s: CRC error.\n", dev->name);
}
}
if (fd.fd_rbd_offset == I82586NULL)
printk("%s: frame has no data.\n", dev->name);
else
{
obram_read(ioaddr, fd.fd_rbd_offset, (unsigned char *)&rbd, sizeof(rbd));
if ((rbd.rbd_status & RBD_STATUS_EOF) != RBD_STATUS_EOF)
printk("%s: missing EOF flag.\n", dev->name);
if ((rbd.rbd_status & RBD_STATUS_F) != RBD_STATUS_F)
printk("%s: missing F flag.\n", dev->name);
pkt_len = rbd.rbd_status & RBD_STATUS_ACNT;
#if 0
{
unsigned char addr[WAVELAN_ADDR_SIZE];
int i;
static unsigned char toweraddr[WAVELAN_ADDR_SIZE] =
{
0x08, 0x00, 0x0e, 0x20, 0x3e, 0xd3,
};
obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr), &addr[0], sizeof(addr));
if
(
/*
addrcmp(&addr[0], &dev->dev_addr[0]) != 0
&&
*/
addrcmp(&addr[0], toweraddr) != 0
)
{
printk("%s: foreign MAC source addr=", dev->name);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? "" : ":", addr[i]);
printk("\n");
}
}
#endif /* 0 */
if (wavelan_debug > 5)
{
unsigned char addr[WAVELAN_ADDR_SIZE];
unsigned short ltype;
int i;
#if 0
printk("%s: fd_dest=", dev->name);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? "" : ":", fd.fd_dest[i]);
printk("\n");
printk("%s: fd_src=", dev->name);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? "" : ":", fd.fd_src[i]);
printk("\n");
printk("%s: fd_length=%d\n", dev->name, fd.fd_length);
#endif /* 0 */
obram_read(ioaddr, rbd.rbd_bufl, &addr[0], sizeof(addr));
printk("%s: dest=", dev->name);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? "" : ":", addr[i]);
printk("\n");
obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr), &addr[0], sizeof(addr));
printk("%s: src=", dev->name);
for (i = 0; i < WAVELAN_ADDR_SIZE; i++)
printk("%s%02x", (i == 0) ? "" : ":", addr[i]);
printk("\n");
obram_read(ioaddr, rbd.rbd_bufl + sizeof(addr) * 2, (unsigned char *)<ype, sizeof(ltype));
printk("%s: ntohs(length/type)=0x%04x\n", dev->name, ntohs(ltype));
}
sksize = pkt_len;
if ((skb = dev_alloc_skb(sksize)) == (struct sk_buff *)0)
{
printk("%s: could not alloc_skb(%d, GFP_ATOMIC).\n", dev->name, sksize);
lp->stats.rx_dropped++;
}
else
{
skb->dev = dev;
obram_read(ioaddr, rbd.rbd_bufl, skb_put(skb,pkt_len), pkt_len);
if (wavelan_debug > 5)
{
int i;
int maxi;
printk("%s: pkt_len=%d, data=\"", dev->name, pkt_len);
if ((maxi = pkt_len) > 16)
maxi = 16;
for (i = 0; i < maxi; i++)
{
unsigned char c;
c = skb->data[i];
if (c >= ' ' && c <= '~')
printk(" %c", skb->data[i]);
else
printk("%02x", skb->data[i]);
}
if (maxi < pkt_len)
printk("..");
printk("\"\n\n");
}
skb->protocol=eth_type_trans(skb,dev);
netif_rx(skb);
lp->stats.rx_packets++;
}
}
fd.fd_status = 0;
obram_write(ioaddr, fdoff(lp->rx_head, fd_status), (unsigned char *)&fd.fd_status, sizeof(fd.fd_status));
fd.fd_command = FD_COMMAND_EL;
obram_write(ioaddr, fdoff(lp->rx_head, fd_command), (unsigned char *)&fd.fd_command, sizeof(fd.fd_command));
fd.fd_command = 0;
obram_write(ioaddr, fdoff(lp->rx_last, fd_command), (unsigned char *)&fd.fd_command, sizeof(fd.fd_command));
lp->rx_last = lp->rx_head;
lp->rx_head = fd.fd_link_offset;
}
/*
if (nreaped > 1)
printk("r%d", nreaped);
*/
}
/*
* Command completion interrupt.
* Reclaim as many freed tx buffers as we can.
*/
static
int
wavelan_complete(device *dev, unsigned short ioaddr, net_local *lp)
{
int nreaped;
nreaped = 0;
for (;;)
{
unsigned short tx_status;
if (lp->tx_first_in_use == I82586NULL)
break;
obram_read(ioaddr, acoff(lp->tx_first_in_use, ac_status), (unsigned char *)&tx_status, sizeof(tx_status));
if ((tx_status & AC_SFLD_C) == 0)
break;
nreaped++;
--lp->tx_n_in_use;
/*
if (lp->tx_n_in_use > 0)
printk("%c", "0123456789abcdefghijk"[lp->tx_n_in_use]);
*/
if (lp->tx_n_in_use <= 0)
lp->tx_first_in_use = I82586NULL;
else
{
lp->tx_first_in_use += TXBLOCKZ;
if (lp->tx_first_in_use >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ)
lp->tx_first_in_use -= NTXBLOCKS * TXBLOCKZ;
}
if (tx_status & AC_SFLD_OK)
{
int ncollisions;
lp->stats.tx_packets++;
ncollisions = tx_status & AC_SFLD_MAXCOL;
lp->stats.collisions += ncollisions;
/*
if (ncollisions > 0)
printk("%s: tx completed after %d collisions.\n", dev->name, ncollisions);
*/
}
else
{
lp->stats.tx_errors++;
if (tx_status & AC_SFLD_S10)
{
lp->stats.tx_carrier_errors++;
if (wavelan_debug > 0)
printk("%s: tx error: no CS.\n", dev->name);
}
if (tx_status & AC_SFLD_S9)
{
lp->stats.tx_carrier_errors++;
printk("%s: tx error: lost CTS.\n", dev->name);
}
if (tx_status & AC_SFLD_S8)
{
lp->stats.tx_fifo_errors++;
printk("%s: tx error: slow DMA.\n", dev->name);
}
if (tx_status & AC_SFLD_S6)
{
lp->stats.tx_heartbeat_errors++;
if (wavelan_debug > 0)
printk("%s: tx error: heart beat.\n", dev->name);
}
if (tx_status & AC_SFLD_S5)
{
lp->stats.tx_aborted_errors++;
if (wavelan_debug > 0)
printk("%s: tx error: too many collisions.\n", dev->name);
}
}
if (wavelan_debug > 5)
printk("%s: tx completed, tx_status 0x%04x.\n", dev->name, tx_status);
}
/*
if (nreaped > 1)
printk("c%d", nreaped);
*/
/*
* Inform upper layers.
*/
if (lp->tx_n_in_use < NTXBLOCKS - 1)
{
dev->tbusy = 0;
mark_bh(NET_BH);
}
return nreaped;
}
static
void
wavelan_watchdog(unsigned long a)
{
device *dev;
net_local *lp;
unsigned short ioaddr;
unsigned long x;
unsigned int nreaped;
x = wavelan_splhi();
dev = (device *)a;
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
if (lp->tx_n_in_use <= 0)
{
wavelan_splx(x);
return;
}
lp->watchdog.expires = jiffies+WATCHDOG_JIFFIES;
add_timer(&lp->watchdog);
if (jiffies - dev->trans_start < WATCHDOG_JIFFIES)
{
wavelan_splx(x);
return;
}
nreaped = wavelan_complete(dev, ioaddr, lp);
printk("%s: warning: wavelan_watchdog(): %d reaped, %d remain.\n", dev->name, nreaped, lp->tx_n_in_use);
/*
wavelan_scb_show(ioaddr);
wavelan_ru_show(dev);
wavelan_cu_show(dev);
wavelan_dev_show(dev);
wavelan_local_show(dev);
*/
wavelan_splx(x);
}
static
void
wavelan_interrupt(int irq, struct pt_regs *regs)
{
device *dev;
unsigned short ioaddr;
net_local *lp;
unsigned short hasr;
unsigned short status;
unsigned short ack_cmd;
if ((dev = (device *)(irq2dev_map[irq])) == (device *)0)
{
printk("wavelan_interrupt(): irq %d for unknown device.\n", irq);
return;
}
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
dev->interrupt = 1;
if ((hasr = hasr_read(ioaddr)) & HASR_MMC_INTR)
{
unsigned char dce_status;
/*
* Interrupt from the modem management controller.
* This will clear it -- ignored for now.
*/
mmc_read(ioaddr, mmroff(0, mmr_dce_status), &dce_status, sizeof(dce_status));
if (wavelan_debug > 0)
printk("%s: warning: wavelan_interrupt(): unexpected mmc interrupt: status 0x%04x.\n", dev->name, dce_status);
}
if ((hasr & HASR_82586_INTR) == 0)
{
dev->interrupt = 0;
if (wavelan_debug > 0)
printk("%s: warning: wavelan_interrupt() but (hasr & HASR_82586_INTR) == 0.\n", dev->name);
return;
}
obram_read(ioaddr, scboff(OFFSET_SCB, scb_status), (unsigned char *)&status, sizeof(status));
/*
* Acknowledge the interrupt(s).
*/
ack_cmd = status & SCB_ST_INT;
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&ack_cmd, sizeof(ack_cmd));
set_chan_attn(ioaddr, lp->hacr);
if (wavelan_debug > 5)
printk("%s: interrupt, status 0x%04x.\n", dev->name, status);
if ((status & SCB_ST_CX) == SCB_ST_CX)
{
/*
* Command completed.
*/
if (wavelan_debug > 5)
printk("%s: command completed.\n", dev->name);
(void)wavelan_complete(dev, ioaddr, lp);
}
if ((status & SCB_ST_FR) == SCB_ST_FR)
{
/*
* Frame received.
*/
if (wavelan_debug > 5)
printk("%s: received packet.\n", dev->name);
wavelan_receive(dev);
}
if
(
(status & SCB_ST_CNA) == SCB_ST_CNA
||
(((status & SCB_ST_CUS) != SCB_ST_CUS_ACTV) && dev->start)
)
{
printk("%s: warning: CU inactive -- restarting.\n", dev->name);
(void)wavelan_hardware_reset(dev);
}
if
(
(status & SCB_ST_RNR) == SCB_ST_RNR
||
(((status & SCB_ST_RUS) != SCB_ST_RUS_RDY) && dev->start)
)
{
printk("%s: warning: RU not ready -- restarting.\n", dev->name);
(void)wavelan_hardware_reset(dev);
}
dev->interrupt = 0;
}
static
int
wavelan_close(device *dev)
{
unsigned short ioaddr;
net_local *lp;
unsigned short scb_cmd;
if (wavelan_debug > 0)
printk("%s: ->wavelan_close(dev=0x%x)\n", dev->name, (unsigned int)dev);
ioaddr = dev->base_addr;
lp = (net_local *)dev->priv;
dev->tbusy = 1;
dev->start = 0;
/*
* Flush the Tx and disable Rx.
*/
scb_cmd = (SCB_CMD_CUC & SCB_CMD_CUC_SUS) | (SCB_CMD_RUC & SCB_CMD_RUC_SUS);
obram_write(ioaddr, scboff(OFFSET_SCB, scb_command), (unsigned char *)&scb_cmd, sizeof(scb_cmd));
set_chan_attn(ioaddr, lp->hacr);
wavelan_ints_off(dev);
free_irq(dev->irq);
irq2dev_map[dev->irq] = (device *)0;
/*
* Release the ioport-region.
*/
release_region(ioaddr, sizeof(ha_t));
MOD_DEC_USE_COUNT;
if (wavelan_debug > 0)
printk("%s: <-wavelan_close(): 0\n", dev->name);
return 0;
}
/*
* Get the current statistics.
* This may be called with the card open or closed.
*/
static
en_stats *
wavelan_get_stats(device *dev)
{
net_local *lp;
lp = (net_local *)dev->priv;
return &lp->stats;
}
static
void
wavelan_set_multicast_list(device *dev)
{
net_local *lp;
unsigned long x;
if (wavelan_debug > 0)
printk("%s: ->wavelan_set_multicast_list(dev=0x%x)", dev->name, dev);
lp = (net_local *)dev->priv;
if(dev->flags&IFF_PROMISC)
{
/*
* Promiscuous mode: receive all packets.
*/
lp->promiscuous = 1;
x = wavelan_splhi();
(void)wavelan_hardware_reset(dev);
wavelan_splx(x);
}
#if MULTICAST_IS_ADDED
else if((dev->flags&IFF_ALLMULTI)||dev->mc_list)
{
}
#endif
else
{
/*
* Normal mode: disable promiscuous mode,
* clear multicast list.
*/
lp->promiscuous = 0;
x = wavelan_splhi();
(void)wavelan_hardware_reset(dev);
wavelan_splx(x);
}
if (wavelan_debug > 0)
printk("%s: <-wavelan_set_multicast_list()\n", dev->name);
}
/*
* Extra WaveLAN-specific device data.
* "cat /proc/net/wavelan" -- see fs/proc/net.c.
*/
static
int
sprintf_stats(char *buffer, device *dev)
{
net_local *lp;
unsigned char v;
mmr_t m;
lp = (net_local *)dev->priv;
if (lp == (net_local *)0)
return sprintf(buffer, "%6s: No statistics available.\n", dev->name);
v = (unsigned char)1;
mmc_write(dev->base_addr, mmwoff(0, mmw_freeze), &v, sizeof(v));
mmc_read(dev->base_addr, mmroff(0, mmr_dce_status), &m.mmr_dce_status, sizeof(m.mmr_dce_status));
mmc_read(dev->base_addr, mmroff(0, mmr_correct_nwid_h), &m.mmr_correct_nwid_h, sizeof(m.mmr_correct_nwid_h));
mmc_read(dev->base_addr, mmroff(0, mmr_correct_nwid_l), &m.mmr_correct_nwid_l, sizeof(m.mmr_correct_nwid_l));
mmc_read(dev->base_addr, mmroff(0, mmr_wrong_nwid_h), &m.mmr_wrong_nwid_h, sizeof(m.mmr_wrong_nwid_h));
mmc_read(dev->base_addr, mmroff(0, mmr_wrong_nwid_l), &m.mmr_wrong_nwid_l, sizeof(m.mmr_wrong_nwid_l));
mmc_read(dev->base_addr, mmroff(0, mmr_signal_lvl), &m.mmr_signal_lvl, sizeof(m.mmr_signal_lvl));
mmc_read(dev->base_addr, mmroff(0, mmr_silence_lvl), &m.mmr_silence_lvl, sizeof(m.mmr_silence_lvl));
mmc_read(dev->base_addr, mmroff(0, mmr_sgnl_qual), &m.mmr_sgnl_qual, sizeof(m.mmr_sgnl_qual));
v = (unsigned char)0;
mmc_write(dev->base_addr, mmwoff(0, mmw_freeze), &v, sizeof(v));
lp->correct_nwid += (m.mmr_correct_nwid_h << 8) | m.mmr_correct_nwid_l;
lp->wrong_nwid += (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l;
return sprintf
(
buffer,
"%6s: %02x %08x %08x %02x %02x %02x %02x %u\n",
dev->name,
m.mmr_dce_status,
lp->correct_nwid,
lp->wrong_nwid,
m.mmr_signal_lvl,
m.mmr_silence_lvl,
m.mmr_sgnl_qual,
lp->tx_n_in_use,
lp->nresets
);
}
static int
wavelan_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
{
int len;
off_t begin;
off_t pos;
int size;
unsigned long x;
len = 0;
begin = 0;
pos = 0;
size = sprintf(buffer, "%s", "Iface | dce +nwid -nwid lvl slnc qual ntxq nrst\n");
pos += size;
len += size;
x = wavelan_splhi();
if (first_wavelan != (net_local *)0)
{
net_local *lp;
lp = first_wavelan;
do
{
size = sprintf_stats(buffer + len, lp->dev);
len += size;
pos = begin + len;
if (pos < offset)
{
len = 0;
begin = pos;
}
if (pos > offset + length)
break;
}
while ((lp = lp->next) != first_wavelan);
}
wavelan_splx(x);
*start = buffer + (offset - begin); /* Start of wanted data */
len -= (offset - begin); /* Start slop */
if (len > length)
len = length; /* Ending slop */
return len;
}
#if defined(MODULE)
static char devicename[9] = { 0, };
static struct device dev_wavelan =
{
devicename, /* device name is inserted by linux/drivers/net/net_init.c */
0, 0, 0, 0,
0, 0,
0, 0, 0, NULL, wavelan_probe
};
static int io = 0x390; /* Default from above.. */
static int irq = 0;
int
init_module(void)
{
dev_wavelan.base_addr = io;
dev_wavelan.irq = irq;
if (register_netdev(&dev_wavelan) != 0)
return -EIO;
return 0;
}
void
cleanup_module(void)
{
proc_net_unregister(PROC_NET_WAVELAN);
unregister_netdev(&dev_wavelan);
kfree_s(dev_wavelan.priv, sizeof(struct net_local));
dev_wavelan.priv = NULL;
}
#endif /* defined(MODULE) */
static
void
wavelan_cu_show_one(device *dev, net_local *lp, int i, unsigned short p)
{
unsigned short ioaddr;
ac_tx_t actx;
ioaddr = dev->base_addr;
printk("%d: 0x%x:", i, p);
obram_read(ioaddr, p, (unsigned char *)&actx, sizeof(actx));
printk(" status=0x%x,", actx.tx_h.ac_status);
printk(" command=0x%x,", actx.tx_h.ac_command);
/*
{
tbd_t tbd;
obram_read(ioaddr, actx.tx_tbd_offset, (unsigned char *)&tbd, sizeof(tbd));
printk(" tbd_status=0x%x,", tbd.tbd_status);
}
*/
printk("|");
}
#if 0
static
void
wavelan_psa_show(psa_t *p)
{
printk("psa:");
printk("psa_io_base_addr_1: 0x%02x,", p->psa_io_base_addr_1);
printk("psa_io_base_addr_2: 0x%02x,", p->psa_io_base_addr_2);
printk("psa_io_base_addr_3: 0x%02x,", p->psa_io_base_addr_3);
printk("psa_io_base_addr_4: 0x%02x,", p->psa_io_base_addr_4);
printk("psa_rem_boot_addr_1: 0x%02x,", p->psa_rem_boot_addr_1);
printk("psa_rem_boot_addr_2: 0x%02x,", p->psa_rem_boot_addr_2);
printk("psa_rem_boot_addr_3: 0x%02x,", p->psa_rem_boot_addr_3);
printk("psa_holi_params: 0x%02x,", p->psa_holi_params);
printk("psa_int_req_no: %d,", p->psa_int_req_no);
printk
(
"psa_univ_mac_addr[]: %02x:%02x:%02x:%02x:%02x:%02x,",
p->psa_univ_mac_addr[0],
p->psa_univ_mac_addr[1],
p->psa_univ_mac_addr[2],
p->psa_univ_mac_addr[3],
p->psa_univ_mac_addr[4],
p->psa_univ_mac_addr[5]
);
printk
(
"psa_local_mac_addr[]: %02x:%02x:%02x:%02x:%02x:%02x,",
p->psa_local_mac_addr[0],
p->psa_local_mac_addr[1],
p->psa_local_mac_addr[2],
p->psa_local_mac_addr[3],
p->psa_local_mac_addr[4],
p->psa_local_mac_addr[5]
);
printk("psa_univ_local_sel: %d,", p->psa_univ_local_sel);
printk("psa_comp_number: %d,", p->psa_comp_number);
printk("psa_thr_pre_set: 0x%02x,", p->psa_thr_pre_set);
printk("psa_feature_select/decay_prm: 0x%02x,", p->psa_feature_select);
printk("psa_subband/decay_update_prm: %d,", p->psa_subband);
printk("psa_quality_thr: 0x%02x,", p->psa_quality_thr);
printk("psa_mod_delay: 0x%02x,", p->psa_mod_delay);
printk("psa_nwid: 0x%02x%02x,", p->psa_nwid[0], p->psa_nwid[1]);
printk("psa_undefined: %d,", p->psa_undefined);
printk("psa_encryption_select: %d,", p->psa_encryption_select);
printk
(
"psa_encryption_key[]: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x,",
p->psa_encryption_key[0],
p->psa_encryption_key[1],
p->psa_encryption_key[2],
p->psa_encryption_key[3],
p->psa_encryption_key[4],
p->psa_encryption_key[5],
p->psa_encryption_key[6],
p->psa_encryption_key[7]
);
printk("psa_databus_width: %d,", p->psa_databus_width);
printk("psa_call_code/auto_squelch: 0x%02x,", p->psa_call_code);
printk("psa_no_of_retries: %d,", p->psa_no_of_retries);
printk("psa_acr: %d,", p->psa_acr);
printk("psa_dump_count: %d,", p->psa_dump_count);
printk("psa_nwid_prefix: 0x%02x,", p->psa_nwid_prefix);
printk("psa_conf_status: %d,", p->psa_conf_status);
printk("psa_crc: 0x%02x%02x,", p->psa_crc[0], p->psa_crc[1]);
printk("psa_crc_status: 0x%02x,", p->psa_crc_status);
printk("\n");
}
static
void
wavelan_mmc_show(unsigned short ioaddr)
{
mmr_t m;
mmc_read(ioaddr, 0, (unsigned char *)&m, sizeof(m));
printk("mmr:");
printk(" des_status: 0x%x", m.mmr_des_status);
printk(" des_avail: 0x%x", m.mmr_des_avail);
printk(" des_io_invert: 0x%x", m.mmr_des_io_invert);
printk
(
" dce_status: 0x%x[%s%s%s%s]",
m.mmr_dce_status & 0x0F,
(m.mmr_dce_status & MMR_DCE_STATUS_ENERG_DET) ? "energy detected," : "",
(m.mmr_dce_status & MMR_DCE_STATUS_LOOPT_IND) ? "loop test indicated," : "",
(m.mmr_dce_status & MMR_DCE_STATUS_XMTITR_IND) ? "transmitter on," : "",
(m.mmr_dce_status & MMR_DCE_STATUS_JBR_EXPIRED) ? "jabber timer expired," : ""
);
printk(" correct_nwid: %d", m.mmr_correct_nwid_h << 8 | m.mmr_correct_nwid_l);
printk(" wrong_nwid: %d", (m.mmr_wrong_nwid_h << 8) | m.mmr_wrong_nwid_l);
printk(" thr_pre_set: 0x%x", m.mmr_thr_pre_set);
printk(" signal_lvl: %d", m.mmr_signal_lvl);
printk(" silence_lvl: %d", m.mmr_silence_lvl);
printk(" sgnl_qual: 0x%x", m.mmr_sgnl_qual);
printk(" netw_id_l: %x", m.mmr_netw_id_l);
printk("\n");
}
#endif /* 0 */
static
void
wavelan_scb_show(unsigned short ioaddr)
{
scb_t scb;
obram_read(ioaddr, OFFSET_SCB, (unsigned char *)&scb, sizeof(scb));
printk("scb:");
printk(" status:");
printk
(
" stat 0x%x[%s%s%s%s]",
(scb.scb_status & (SCB_ST_CX | SCB_ST_FR | SCB_ST_CNA | SCB_ST_RNR)) >> 12,
(scb.scb_status & SCB_ST_CX) ? "cmd completion interrupt," : "",
(scb.scb_status & SCB_ST_FR) ? "frame received," : "",
(scb.scb_status & SCB_ST_CNA) ? "cmd unit not active," : "",
(scb.scb_status & SCB_ST_RNR) ? "rcv unit not ready," : ""
);
printk
(
" cus 0x%x[%s%s%s]",
(scb.scb_status & SCB_ST_CUS) >> 8,
((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_IDLE) ? "idle" : "",
((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_SUSP) ? "suspended" : "",
((scb.scb_status & SCB_ST_CUS) == SCB_ST_CUS_ACTV) ? "active" : ""
);
printk
(
" rus 0x%x[%s%s%s%s]",
(scb.scb_status & SCB_ST_RUS) >> 4,
((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_IDLE) ? "idle" : "",
((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_SUSP) ? "suspended" : "",
((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_NRES) ? "no resources" : "",
((scb.scb_status & SCB_ST_RUS) == SCB_ST_RUS_RDY) ? "ready" : ""
);
printk(" command:");
printk
(
" ack 0x%x[%s%s%s%s]",
(scb.scb_command & (SCB_CMD_ACK_CX | SCB_CMD_ACK_FR | SCB_CMD_ACK_CNA | SCB_CMD_ACK_RNR)) >> 12,
(scb.scb_command & SCB_CMD_ACK_CX) ? "ack cmd completion," : "",
(scb.scb_command & SCB_CMD_ACK_FR) ? "ack frame received," : "",
(scb.scb_command & SCB_CMD_ACK_CNA) ? "ack CU not active," : "",
(scb.scb_command & SCB_CMD_ACK_RNR) ? "ack RU not ready," : ""
);
printk
(
" cuc 0x%x[%s%s%s%s%s]",
(scb.scb_command & SCB_CMD_CUC) >> 8,
((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_NOP) ? "nop" : "",
((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_GO) ? "start cbl_offset" : "",
((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_RES) ? "resume execution" : "",
((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_SUS) ? "suspend execution" : "",
((scb.scb_command & SCB_CMD_CUC) == SCB_CMD_CUC_ABT) ? "abort execution" : ""
);
printk
(
" ruc 0x%x[%s%s%s%s%s]",
(scb.scb_command & SCB_CMD_RUC) >> 4,
((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_NOP) ? "nop" : "",
((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_GO) ? "start rfa_offset" : "",
((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_RES) ? "resume reception" : "",
((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_SUS) ? "suspend reception" : "",
((scb.scb_command & SCB_CMD_RUC) == SCB_CMD_RUC_ABT) ? "abort reception" : ""
);
printk(" cbl_offset 0x%x", scb.scb_cbl_offset);
printk(" rfa_offset 0x%x", scb.scb_rfa_offset);
printk(" crcerrs %d", scb.scb_crcerrs);
printk(" alnerrs %d", scb.scb_alnerrs);
printk(" rscerrs %d", scb.scb_rscerrs);
printk(" ovrnerrs %d", scb.scb_ovrnerrs);
printk("\n");
}
static
void
wavelan_ru_show(device *dev)
{
net_local *lp;
lp = (net_local *)dev->priv;
printk("ru:");
/*
* Not implemented yet...
*/
printk("\n");
}
static
void
wavelan_cu_show(device *dev)
{
net_local *lp;
unsigned int i;
unsigned short p;
lp = (net_local *)dev->priv;
printk("cu:");
printk("\n");
for (i = 0, p = lp->tx_first_in_use; i < NTXBLOCKS; i++)
{
wavelan_cu_show_one(dev, lp, i, p);
p += TXBLOCKZ;
if (p >= OFFSET_CU + NTXBLOCKS * TXBLOCKZ)
p -= NTXBLOCKS * TXBLOCKZ;
}
}
static
void
wavelan_dev_show(device *dev)
{
printk("dev:");
printk(" start=%d,", dev->start);
printk(" tbusy=%ld,", dev->tbusy);
printk(" interrupt=%d,", dev->interrupt);
printk(" trans_start=%ld,", dev->trans_start);
printk(" flags=0x%x,", dev->flags);
printk("\n");
}
static
void
wavelan_local_show(device *dev)
{
net_local *lp;
lp = (net_local *)dev->priv;
printk("local:");
printk(" tx_n_in_use=%d,", lp->tx_n_in_use);
printk(" hacr=0x%x,", lp->hacr);
printk(" rx_head=0x%x,", lp->rx_head);
printk(" rx_last=0x%x,", lp->rx_last);
printk(" tx_first_free=0x%x,", lp->tx_first_free);
printk(" tx_first_in_use=0x%x,", lp->tx_first_in_use);
printk("\n");
}
/*
* This software may only be used and distributed
* according to the terms of the GNU Public License.
*
* This software was developed as a component of the
* Linux operating system.
* It is based on other device drivers and information
* either written or supplied by:
* Ajay Bakre ([email protected]),
* Donald Becker ([email protected]),
* Loeke Brederveld ([email protected]),
* Anders Klemets ([email protected]),
* Vladimir V. Kolpakov ([email protected]),
* Marc Meertens ([email protected]),
* Pauline Middelink ([email protected]),
* Robert Morris ([email protected]),
* Girish Welling ([email protected]),
*
* Thanks go also to:
* James Ashton ([email protected]),
* Alan Cox ([email protected]),
* Allan Creighton ([email protected]),
* Matthew Geier ([email protected]),
* Remo di Giovanni ([email protected]),
* Eckhard Grah ([email protected]),
* Vipul Gupta ([email protected]),
* Mark Hagan ([email protected]),
* Tim Nicholson ([email protected]),
* Ian Parkin ([email protected]),
* John Rosenberg ([email protected]),
* George Rossi ([email protected]),
* Arthur Scott ([email protected]),
* Peter Storey,
* for their assistance and advice.
*
* Please send bug reports, updates, comments to:
*
* Bruce Janson Email: [email protected]
* Basser Department of Computer Science Phone: +61-2-351-3423
* University of Sydney, N.S.W., 2006, AUSTRALIA Fax: +61-2-351-3838
*/
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