0310c19f5d
<sys/vm.h>. Many device drivers need only the definition of vtophys() from vm. Added nearby #includes of <sys/conf.h> where appropriate.
2023 lines
41 KiB
C
2023 lines
41 KiB
C
/*-
|
|
* dgb.c $Id: dgb.c,v 1.7 1995/11/29 14:39:06 julian Exp $
|
|
*
|
|
* Digiboard driver.
|
|
*
|
|
* Stage 1. "Better than nothing".
|
|
*
|
|
* Based on sio driver by Bruce Evans and on Linux driver by Troy
|
|
* De Jongh <troyd@digibd.com> or <troyd@skypoint.com>
|
|
* which is under GNU General Public License version 2 so this driver
|
|
* is forced to be under GPL 2 too.
|
|
*
|
|
* Written by Serge Babkin,
|
|
* Joint Stock Commercial Bank "Chelindbank"
|
|
* (Chelyabinsk, Russia)
|
|
* babkin@hq.icb.chel.su
|
|
*/
|
|
|
|
#include "dgb.h"
|
|
|
|
#if NDGB > 0
|
|
|
|
/* the overall number of ports controlled by this driver */
|
|
|
|
#ifndef NDGBPORTS
|
|
# define NDGBPORTS (NDGB*16)
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/dkstat.h>
|
|
#include <sys/file.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/devconf.h>
|
|
|
|
#include <machine/clock.h>
|
|
|
|
#include <vm/vm.h>
|
|
|
|
#include <i386/isa/isa.h>
|
|
#include <i386/isa/isa_device.h>
|
|
|
|
#include <gnu/i386/isa/dgbios.h>
|
|
#include <gnu/i386/isa/dgfep.h>
|
|
#include <gnu/i386/isa/dgreg.h>
|
|
|
|
#ifdef JREMOD
|
|
#ifdef DEVFS
|
|
#include <sys/devfsext.h>
|
|
#endif /*DEVFS*/
|
|
#define CDEV_MAJOR 58
|
|
#endif /*JREMOD*/
|
|
|
|
#define CALLOUT_MASK 0x80
|
|
#define CONTROL_MASK 0x60
|
|
#define CONTROL_INIT_STATE 0x20
|
|
#define CONTROL_LOCK_STATE 0x40
|
|
#define UNIT_MASK 0x30000
|
|
#define PORT_MASK 0x1F
|
|
#define DEV_TO_UNIT(dev) (MINOR_TO_UNIT(minor(dev)))
|
|
#define MINOR_MAGIC_MASK (CALLOUT_MASK | CONTROL_MASK)
|
|
#define MINOR_TO_UNIT(mynor) (((mynor) & UNIT_MASK)>>16)
|
|
#define MINOR_TO_PORT(mynor) ((mynor) & PORT_MASK)
|
|
|
|
/* types. XXX - should be elsewhere */
|
|
typedef u_char bool_t; /* boolean */
|
|
|
|
/* digiboard port structure */
|
|
struct dgb_p {
|
|
bool_t status;
|
|
|
|
u_char unit; /* board unit number */
|
|
u_char pnum; /* port number */
|
|
u_char omodem; /* FEP output modem status */
|
|
u_char imodem; /* FEP input modem status */
|
|
u_char modemfake; /* Modem values to be forced */
|
|
u_char modem; /* Force values */
|
|
u_char hflow;
|
|
u_char dsr;
|
|
u_char dcd;
|
|
u_char stopc;
|
|
u_char startc;
|
|
u_char stopca;
|
|
u_char startca;
|
|
u_char fepstopc;
|
|
u_char fepstartc;
|
|
u_char fepstopca;
|
|
u_char fepstartca;
|
|
u_char txwin;
|
|
u_char rxwin;
|
|
ushort fepiflag;
|
|
ushort fepcflag;
|
|
ushort fepoflag;
|
|
ushort txbufhead;
|
|
ushort txbufsize;
|
|
ushort rxbufhead;
|
|
ushort rxbufsize;
|
|
int close_delay;
|
|
int count;
|
|
int blocked_open;
|
|
int event;
|
|
int asyncflags;
|
|
u_long statusflags;
|
|
u_char *txptr;
|
|
u_char *rxptr;
|
|
struct board_chan *brdchan;
|
|
struct tty *tty;
|
|
|
|
bool_t active_out; /* nonzero if the callout device is open */
|
|
u_int wopeners; /* # processes waiting for DCD in open() */
|
|
|
|
/* Initial state. */
|
|
struct termios it_in; /* should be in struct tty */
|
|
struct termios it_out;
|
|
|
|
/* Lock state. */
|
|
struct termios lt_in; /* should be in struct tty */
|
|
struct termios lt_out;
|
|
|
|
/* flags of state, are used in sleep() too */
|
|
u_char closing; /* port is being closed now */
|
|
u_char draining; /* port is being drained now */
|
|
u_char used; /* port is being used now */
|
|
u_char mustdrain; /* data must be waited to drain in dgbparam() */
|
|
};
|
|
|
|
/* Digiboard per-board structure */
|
|
struct dgb_softc {
|
|
/* struct board_info */
|
|
u_char status; /* status: DISABLED/ENABLED */
|
|
u_char unit; /* unit number */
|
|
u_char type; /* type of card: PCXE, PCXI, PCXEVE */
|
|
u_char altpin; /* do we need alternate pin setting ? */
|
|
ushort numports; /* number of ports on card */
|
|
ushort port; /* I/O port */
|
|
u_char *vmem; /* virtual memory address */
|
|
long pmem; /* physical memory address */
|
|
int mem_seg; /* internal memory segment */
|
|
struct dgb_p *ports; /* pointer to array of port descriptors */
|
|
struct tty *ttys; /* pointer to array of TTY structures */
|
|
volatile struct global_data *mailbox;
|
|
};
|
|
|
|
|
|
struct dgb_softc dgb_softc[NDGB];
|
|
struct dgb_p dgb_ports[NDGBPORTS];
|
|
struct tty dgb_tty[NDGBPORTS];
|
|
|
|
/*
|
|
* The public functions in the com module ought to be declared in a com-driver
|
|
* system header.
|
|
*/
|
|
|
|
/* Interrupt handling entry points. */
|
|
void dgbintr __P((int unit));
|
|
void dgbpoll __P((void *unit_c));
|
|
|
|
/* Device switch entry points. */
|
|
#define dgbreset noreset
|
|
#define dgbmmap nommap
|
|
#define dgbstrategy nostrategy
|
|
|
|
static int dgbattach __P((struct isa_device *dev));
|
|
static int dgbprobe __P((struct isa_device *dev));
|
|
static void dgbregisterdev __P((struct isa_device *id));
|
|
|
|
static void fepcmd(struct dgb_p *port, int cmd, int op1, int op2,
|
|
int ncmds, int bytecmd);
|
|
|
|
static void dgbstart __P((struct tty *tp));
|
|
static int dgbparam __P((struct tty *tp, struct termios *t));
|
|
static void dgbhardclose __P((struct dgb_p *port));
|
|
static void dgb_drain_or_flush __P((struct dgb_p *port));
|
|
static int dgbdrain __P((struct dgb_p *port));
|
|
static void dgb_pause __P((void *chan));
|
|
static void wakeflush __P((void *p));
|
|
|
|
|
|
struct isa_driver dgbdriver = {
|
|
dgbprobe, dgbattach, "dgb",0
|
|
};
|
|
|
|
static speed_t dgbdefaultrate = TTYDEF_SPEED;
|
|
static u_int dgb_events; /* input chars + weighted output completions */
|
|
static int dgbmajor;
|
|
|
|
static struct speedtab dgbspeedtab[] = {
|
|
0, 0, /* old (sysV-like) Bx codes */
|
|
50, 1,
|
|
75, 2,
|
|
110, 3,
|
|
134, 4,
|
|
150, 5,
|
|
200, 6,
|
|
300, 7,
|
|
600, 8,
|
|
1200, 9,
|
|
1800, 10,
|
|
2400, 11,
|
|
4800, 12,
|
|
9600, 13,
|
|
19200, 14,
|
|
38400, 15,
|
|
57600, (02000 | 1), /* B50 & fast baud table */
|
|
115200, (02000 | 2), /* B100 & fast baud table */
|
|
-1, -1
|
|
};
|
|
|
|
#ifdef DEBUG
|
|
int dgbdebug=1;
|
|
#else
|
|
int dgbdebug=0;
|
|
#endif
|
|
|
|
static int polltimeout=0;
|
|
|
|
static int setwin __P((struct dgb_softc *sc, unsigned addr));
|
|
static int setinitwin __P((struct dgb_softc *sc, unsigned addr));
|
|
static void hidewin __P((struct dgb_softc *sc));
|
|
static void towin __P((struct dgb_softc *sc, int win));
|
|
|
|
static inline int
|
|
setwin(sc,addr)
|
|
struct dgb_softc *sc;
|
|
unsigned int addr;
|
|
{
|
|
if(sc->type==PCXEVE) {
|
|
outb(sc->port+1, FEPWIN|(addr>>13));
|
|
DPRINT3("dgb%d: switched to window 0x%x\n",sc->unit,addr>>13);
|
|
return (addr & 0x1FFF);
|
|
} else {
|
|
outb(sc->port,FEPMEM);
|
|
return addr;
|
|
}
|
|
}
|
|
|
|
static inline int
|
|
setinitwin(sc,addr)
|
|
struct dgb_softc *sc;
|
|
unsigned int addr;
|
|
{
|
|
if(sc->type==PCXEVE) {
|
|
outb(sc->port+1, FEPWIN|(addr>>13));
|
|
DPRINT3("dgb%d: switched to window 0x%x\n",sc->unit,addr>>13);
|
|
return (addr & 0x1FFF);
|
|
} else {
|
|
outb(sc->port,inb(sc->port)|FEPMEM);
|
|
return addr;
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
hidewin(sc)
|
|
struct dgb_softc *sc;
|
|
{
|
|
if(sc->type==PCXEVE)
|
|
outb(sc->port+1, 0);
|
|
else
|
|
outb(sc->port,0);
|
|
}
|
|
|
|
static inline void
|
|
towin(sc,win)
|
|
struct dgb_softc *sc;
|
|
int win;
|
|
{
|
|
if(sc->type==PCXEVE) {
|
|
outb(sc->port+1, win);
|
|
} else {
|
|
outb(sc->port,FEPMEM);
|
|
}
|
|
}
|
|
|
|
static int
|
|
dgbprobe(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
struct dgb_softc *sc= &dgb_softc[dev->id_unit];
|
|
int i, v, t;
|
|
u_long win_size; /* size of vizible memory window */
|
|
u_char *mem;
|
|
int addr;
|
|
int unit=dev->id_unit;
|
|
|
|
sc->unit=dev->id_unit;
|
|
sc->port=dev->id_iobase;
|
|
|
|
if(dev->id_flags & DGBFLAG_ALTPIN)
|
|
sc->altpin=1;
|
|
else
|
|
sc->altpin=0;
|
|
|
|
/* left 24 bits only (ISA address) */
|
|
sc->pmem=((long)dev->id_maddr & 0xFFFFFF);
|
|
|
|
DPRINT4("dgb%d: port 0x%x mem 0x%x\n",unit,sc->port,sc->pmem);
|
|
|
|
outb(sc->port, FEPRST);
|
|
sc->status=DISABLED;
|
|
|
|
for(i=0; i< 1000; i++) {
|
|
DELAY(1);
|
|
if( (inb(sc->port) & FEPMASK) == FEPRST ) {
|
|
sc->status=ENABLED;
|
|
DPRINT3("dgb%d: got reset after %d us\n",unit,i);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(sc->status!=ENABLED) {
|
|
DPRINT2("dgb%d: failed to respond\n",dev->id_unit);
|
|
return 0;
|
|
}
|
|
|
|
/* check type of card and get internal memory characteristics */
|
|
|
|
v=inb(sc->port);
|
|
|
|
if( v & 0x1 ) {
|
|
switch( v&0x30 ) {
|
|
case 0:
|
|
sc->mem_seg=0xF000;
|
|
win_size=0x10000;
|
|
printf("dgb%d: PC/Xi 64K\n",dev->id_unit);
|
|
break;
|
|
case 0x10:
|
|
sc->mem_seg=0xE000;
|
|
win_size=0x20000;
|
|
printf("dgb%d: PC/Xi 128K\n",dev->id_unit);
|
|
break;
|
|
case 0x20:
|
|
sc->mem_seg=0xC000;
|
|
win_size=0x40000;
|
|
printf("dgb%d: PC/Xi 256K\n",dev->id_unit);
|
|
break;
|
|
default: /* case 0x30: */
|
|
sc->mem_seg=0x8000;
|
|
win_size=0x80000;
|
|
printf("dgb%d: PC/Xi 512K\n",dev->id_unit);
|
|
break;
|
|
}
|
|
sc->type=PCXI;
|
|
} else {
|
|
outb(sc->port, 1);
|
|
v=inb(sc->port);
|
|
|
|
if( v & 0x1 ) {
|
|
printf("dgb%d: PC/Xm isn't supported\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
return 0;
|
|
}
|
|
|
|
sc->mem_seg=0xF000;
|
|
|
|
if(dev->id_flags==DGBFLAG_NOWIN || ( v&0xC0 )==0) {
|
|
win_size=0x10000;
|
|
printf("dgb%d: PC/Xe 64K\n",dev->id_unit);
|
|
sc->type=PCXE;
|
|
} else {
|
|
win_size=0x2000;
|
|
printf("dgb%d: PC/Xe 64/8K (windowed)\n",dev->id_unit);
|
|
sc->type=PCXEVE;
|
|
if((u_long)sc->pmem & ~0xFFE000) {
|
|
printf("dgb%d: warning: address 0x%x truncated to 0x%x\n",
|
|
dev->id_unit, sc->pmem,
|
|
(long)sc->pmem & 0xFFE000);
|
|
|
|
dev->id_maddr= (u_char *)( (long)sc->pmem & 0xFFE000 );
|
|
}
|
|
}
|
|
}
|
|
|
|
/* save size of vizible memory segment */
|
|
dev->id_msize=win_size;
|
|
|
|
/* map memory */
|
|
dev->id_maddr=sc->vmem=pmap_mapdev(sc->pmem,dev->id_msize);
|
|
|
|
outb(sc->port, FEPCLR); /* drop RESET */
|
|
|
|
return 4; /* we need I/O space of 4 ports */
|
|
}
|
|
|
|
static struct kern_devconf kdc_dgb[NDGB] = { {
|
|
0, 0, 0, /* filled in by dev_attach */
|
|
"dgb", 0, { MDDT_ISA, 0, "tty" },
|
|
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
|
|
&kdc_isa0, /* parent */
|
|
0, /* parentdata */
|
|
DC_UNCONFIGURED,
|
|
"DigiBoard multiport card"
|
|
} };
|
|
|
|
static void
|
|
dgbregisterdev(id)
|
|
struct isa_device *id;
|
|
{
|
|
int unit;
|
|
|
|
unit = id->id_unit;
|
|
if (unit != 0)
|
|
kdc_dgb[unit] = kdc_dgb[0];
|
|
kdc_dgb[unit].kdc_unit = unit;
|
|
kdc_dgb[unit].kdc_isa = id;
|
|
|
|
/* now we assume that multiport is always 'open' for simplicity */
|
|
kdc_dgb[unit].kdc_state = DC_BUSY;
|
|
dev_attach(&kdc_dgb[unit]);
|
|
}
|
|
|
|
|
|
static int
|
|
dgbattach(dev)
|
|
struct isa_device *dev;
|
|
{
|
|
int unit=dev->id_unit;
|
|
struct dgb_softc *sc= &dgb_softc[dev->id_unit];
|
|
int i, t;
|
|
u_char *mem;
|
|
u_char *ptr;
|
|
int addr;
|
|
struct dgb_p *port;
|
|
struct board_chan *bc;
|
|
struct global_data *gd;
|
|
int shrinkmem;
|
|
int nfails;
|
|
ushort *pstat;
|
|
int lowwater;
|
|
int nports=0;
|
|
|
|
if(sc->status!=ENABLED) {
|
|
DPRINT2("dbg%d: try to attach a disabled card\n",unit);
|
|
return 0;
|
|
}
|
|
|
|
mem=sc->vmem;
|
|
|
|
DPRINT3("dgb%d: internal memory segment 0x%x\n",unit,sc->mem_seg);
|
|
|
|
outb(sc->port, FEPRST); DELAY(1);
|
|
|
|
for(i=0; (inb(sc->port) & FEPMASK) != FEPRST ; i++) {
|
|
if(i>10000) {
|
|
printf("dgb%d: 1st reset failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
DELAY(1);
|
|
}
|
|
|
|
DPRINT3("dgb%d: got reset after %d us\n",unit,i);
|
|
|
|
/* for PCXEVE set up interrupt and base address */
|
|
|
|
if(sc->type==PCXEVE) {
|
|
t=(((u_long)sc->pmem>>8) & 0xFFE0) | 0x10 /* enable windowing */;
|
|
|
|
/* IRQ isn't used */
|
|
#if 0
|
|
switch(dev->id_irq) {
|
|
case IRQ3:
|
|
t|=0x1;
|
|
break;
|
|
case IRQ5:
|
|
t|=2;
|
|
break;
|
|
case IRQ7:
|
|
t|=3;
|
|
break;
|
|
case IRQ10:
|
|
t|=4;
|
|
break;
|
|
case IRQ11:
|
|
t|=5;
|
|
break;
|
|
case IRQ12:
|
|
t|=6;
|
|
break;
|
|
case IRQ15:
|
|
t|=7;
|
|
break;
|
|
default:
|
|
printf("dgb%d: wrong IRQ mask 0x%x\n",dev->id_unit,dev->id_irq);
|
|
sc->status=DISABLED;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
outb(sc->port+2,t & 0xFF);
|
|
outb(sc->port+3,t>>8);
|
|
} else if(sc->type==PCXE) {
|
|
t=(((u_long)sc->pmem>>8) & 0xFFE0) /* disable windowing */;
|
|
outb(sc->port+2,t & 0xFF);
|
|
outb(sc->port+3,t>>8);
|
|
}
|
|
|
|
|
|
if(sc->type==PCXI || sc->type==PCXE) {
|
|
outb(sc->port, FEPRST|FEPMEM); DELAY(1);
|
|
|
|
for(i=0; (inb(sc->port) & FEPMASK) != (FEPRST|FEPMEM) ; i++) {
|
|
if(i>10000) {
|
|
printf("dgb%d: 2nd reset failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
DELAY(1);
|
|
}
|
|
|
|
DPRINT3("dgb%d: got memory after %d us\n",unit,i);
|
|
}
|
|
|
|
mem=sc->vmem;
|
|
|
|
/* very short memory test */
|
|
|
|
addr=setinitwin(sc,BOTWIN);
|
|
*(u_long *)(mem+addr) = 0xA55A3CC3;
|
|
if(*(u_long *)(mem+addr)!=0xA55A3CC3) {
|
|
printf("dgb%d: 1st memory test failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
addr=setinitwin(sc,TOPWIN);
|
|
*(u_long *)(mem+addr) = 0x5AA5C33C;
|
|
if(*(u_long *)(mem+addr)!=0x5AA5C33C) {
|
|
printf("dgb%d: 2nd memory test failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
addr=setinitwin(sc,BIOSCODE+((0xF000-sc->mem_seg)<<4));
|
|
*(u_long *)(mem+addr) = 0x5AA5C33C;
|
|
if(*(u_long *)(mem+addr)!=0x5AA5C33C) {
|
|
printf("dgb%d: 3rd (BIOS) memory test failed\n",dev->id_unit);
|
|
}
|
|
|
|
addr=setinitwin(sc,MISCGLOBAL);
|
|
for(i=0; i<16; i++) {
|
|
mem[addr+i]=0;
|
|
}
|
|
|
|
if(sc->type==PCXI || sc->type==PCXE) {
|
|
|
|
addr=BIOSCODE+((0xF000-sc->mem_seg)<<4);
|
|
|
|
DPRINT3("dgb%d: BIOS local address=0x%x\n",unit,addr);
|
|
|
|
ptr= mem+addr;
|
|
|
|
for(i=0; i<pcxx_nbios; i++, ptr++)
|
|
*ptr = pcxx_bios[i];
|
|
|
|
ptr= mem+addr;
|
|
|
|
nfails=0;
|
|
for(i=0; i<pcxx_nbios; i++, ptr++)
|
|
if( *ptr != pcxx_bios[i] ) {
|
|
DPRINT5("dgb%d: wrong code in BIOS at addr 0x%x : \
|
|
0x%x instead of 0x%x\n", unit, ptr-(mem+addr), *ptr, pcxx_bios[i] );
|
|
|
|
if(++nfails>=5) {
|
|
printf("dgb%d: 4th memory test (BIOS load) fails\n",unit);
|
|
break;
|
|
}
|
|
}
|
|
|
|
outb(sc->port,FEPMEM);
|
|
|
|
for(i=0; (inb(sc->port) & FEPMASK) != FEPMEM ; i++) {
|
|
if(i>10000) {
|
|
printf("dgb%d: BIOS start failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
DELAY(1);
|
|
}
|
|
|
|
DPRINT3("dgb%d: reset dropped after %d us\n",unit,i);
|
|
|
|
for(i=0; i<200000; i++) {
|
|
if( *((ushort *)(mem+MISCGLOBAL)) == *((ushort *)"GD") )
|
|
goto load_fep;
|
|
DELAY(1);
|
|
}
|
|
printf("dgb%d: BIOS download failed\n",dev->id_unit);
|
|
DPRINT4("dgb%d: code=0x%x must be 0x%x\n",
|
|
dev->id_unit,
|
|
*((ushort *)(mem+MISCGLOBAL)),
|
|
*((ushort *)"GD"));
|
|
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
if(sc->type==PCXEVE) {
|
|
/* set window 7 */
|
|
outb(sc->port+1,0xFF);
|
|
|
|
ptr= mem+(BIOSCODE & 0x1FFF);
|
|
|
|
for(i=0; i<pcxx_nbios; i++)
|
|
*ptr++ = pcxx_bios[i];
|
|
|
|
ptr= mem+(BIOSCODE & 0x1FFF);
|
|
|
|
nfails=0;
|
|
for(i=0; i<pcxx_nbios; i++, ptr++)
|
|
if( *ptr != pcxx_bios[i] ) {
|
|
DPRINT5("dgb%d: wrong code in BIOS at addr 0x%x : \
|
|
0x%x instead of 0x%x\n", unit, ptr-(mem+addr), *ptr, pcxx_bios[i] );
|
|
|
|
if(++nfails>=5) {
|
|
printf("dgb%d: 4th memory test (BIOS load) fails\n",unit);
|
|
break;
|
|
}
|
|
}
|
|
|
|
outb(sc->port,FEPCLR);
|
|
|
|
setwin(sc,0);
|
|
|
|
for(i=0; (inb(sc->port) & FEPMASK) != FEPCLR ; i++) {
|
|
if(i>10000) {
|
|
printf("dgb%d: BIOS start failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
DELAY(1);
|
|
}
|
|
|
|
DPRINT3("dgb%d: reset dropped after %d us\n",unit,i);
|
|
|
|
addr=setwin(sc,MISCGLOBAL);
|
|
|
|
for(i=0; i<200000; i++) {
|
|
if(*(ushort *)(mem+addr)== *(ushort *)"GD")
|
|
goto load_fep;
|
|
DELAY(1);
|
|
}
|
|
printf("dgb%d: BIOS download failed\n",dev->id_unit);
|
|
DPRINT5("dgb%d: Error#(0x%x,0x%x) code=0x%x\n",
|
|
dev->id_unit,
|
|
*(ushort *)(mem+0xC12),
|
|
*(ushort *)(mem+0xC14),
|
|
*(ushort *)(mem+MISCGLOBAL));
|
|
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
load_fep:
|
|
DPRINT2("dgb%d: BIOS loaded\n",dev->id_unit);
|
|
|
|
addr=setwin(sc,FEPCODE);
|
|
|
|
ptr= mem+addr;
|
|
|
|
for(i=0; i<pcxx_ncook; i++)
|
|
*ptr++ = pcxx_cook[i];
|
|
|
|
addr=setwin(sc,MBOX);
|
|
*(ushort *)(mem+addr+ 0)=2;
|
|
*(ushort *)(mem+addr+ 2)=sc->mem_seg+FEPCODESEG;
|
|
*(ushort *)(mem+addr+ 4)=0;
|
|
*(ushort *)(mem+addr+ 6)=FEPCODESEG;
|
|
*(ushort *)(mem+addr+ 8)=0;
|
|
*(ushort *)(mem+addr+10)=pcxx_ncook;
|
|
|
|
outb(sc->port,FEPMEM|FEPINT); /* send interrupt to BIOS */
|
|
outb(sc->port,FEPMEM);
|
|
|
|
for(i=0; *(ushort *)(mem+addr)!=0; i++) {
|
|
if(i>200000) {
|
|
printf("dgb%d: FEP code download failed\n",unit);
|
|
DPRINT3("dgb%d: code=0x%x must be 0\n", unit,
|
|
*(ushort *)(mem+addr));
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
DPRINT2("dgb%d: FEP code loaded\n",unit);
|
|
|
|
*(ushort *)(mem+setwin(sc,FEPSTAT))=0;
|
|
addr=setwin(sc,MBOX);
|
|
*(ushort *)(mem+addr+0)=1;
|
|
*(ushort *)(mem+addr+2)=FEPCODESEG;
|
|
*(ushort *)(mem+addr+4)=0x4;
|
|
|
|
outb(sc->port,FEPINT); /* send interrupt to BIOS */
|
|
outb(sc->port,FEPCLR);
|
|
|
|
addr=setwin(sc,FEPSTAT);
|
|
for(i=0; *(ushort *)(mem+addr)!= *(ushort *)"OS"; i++) {
|
|
if(i>200000) {
|
|
printf("dgb%d: FEP/OS start failed\n",dev->id_unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
DPRINT2("dgb%d: FEP/OS started\n",dev->id_unit);
|
|
|
|
sc->numports= *(ushort *)(mem+setwin(sc,NPORT));
|
|
|
|
printf("dgb%d: %d ports\n",unit,sc->numports);
|
|
|
|
if(sc->numports > MAX_DGB_PORTS) {
|
|
printf("dgb%d: too many ports\n",unit);
|
|
sc->status=DISABLED;
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
if(nports+sc->numports>NDGBPORTS) {
|
|
printf("dgb%d: only %d ports are usable\n", unit, NDGBPORTS-nports);
|
|
sc->numports=NDGBPORTS-nports;
|
|
}
|
|
|
|
/* allocate port and tty structures */
|
|
sc->ports=&dgb_ports[nports];
|
|
sc->ttys=&dgb_tty[nports];
|
|
nports+=sc->numports;
|
|
|
|
addr=setwin(sc,PORTBASE);
|
|
pstat=(ushort *)(mem+addr);
|
|
|
|
for(i=0; i<sc->numports && pstat[i]; i++)
|
|
if(pstat[i])
|
|
sc->ports[i].status=ENABLED;
|
|
else {
|
|
sc->ports[i].status=DISABLED;
|
|
printf("dgb%d: port %d is broken\n", unit, i);
|
|
}
|
|
|
|
/* We should now init per-port structures */
|
|
bc=(struct board_chan *)(mem + CHANSTRUCT);
|
|
sc->mailbox=(struct global_data *)(mem + FEP_GLOBAL);
|
|
|
|
if(sc->numports<3)
|
|
shrinkmem=1;
|
|
else
|
|
shrinkmem=0;
|
|
|
|
for(i=0; i<sc->numports; i++, bc++) {
|
|
port= &sc->ports[i];
|
|
|
|
port->tty=&sc->ttys[i];
|
|
port->unit=unit;
|
|
|
|
port->brdchan=bc;
|
|
|
|
if(sc->altpin) {
|
|
port->dsr=CD;
|
|
port->dcd=DSR;
|
|
} else {
|
|
port->dcd=CD;
|
|
port->dsr=DSR;
|
|
}
|
|
|
|
port->pnum=i;
|
|
|
|
if(shrinkmem) {
|
|
DPRINT2("dgb%d: shrinking memory\n",unit);
|
|
fepcmd(port, SETBUFFER, 32, 0, 0, 0);
|
|
shrinkmem=0;
|
|
}
|
|
|
|
if(sc->type!=PCXEVE) {
|
|
port->txptr=mem+((bc->tseg-sc->mem_seg)<<4);
|
|
port->rxptr=mem+((bc->rseg-sc->mem_seg)<<4);
|
|
port->txwin=port->rxwin=0;
|
|
} else {
|
|
port->txptr=mem+( ((bc->tseg-sc->mem_seg)<<4) & 0x1FFF );
|
|
port->rxptr=mem+( ((bc->rseg-sc->mem_seg)<<4) & 0x1FFF );
|
|
port->txwin=FEPWIN | ((bc->tseg-sc->mem_seg)>>9);
|
|
port->rxwin=FEPWIN | ((bc->rseg-sc->mem_seg)>>9);
|
|
}
|
|
|
|
port->txbufhead=0;
|
|
port->rxbufhead=0;
|
|
port->txbufsize=bc->tmax+1;
|
|
port->rxbufsize=bc->rmax+1;
|
|
|
|
lowwater= (port->txbufsize>=2000) ? 1024 : (port->txbufsize/2);
|
|
fepcmd(port, STXLWATER, lowwater, 0, 10, 0);
|
|
fepcmd(port, SRXLWATER, port->rxbufsize/4, 0, 10, 0);
|
|
fepcmd(port, SRXHWATER, 3*port->rxbufsize/4, 0, 10, 0);
|
|
|
|
bc->edelay=100;
|
|
bc->idata=1;
|
|
|
|
port->startc=bc->startc;
|
|
port->startca=bc->startca;
|
|
port->stopc=bc->stopc;
|
|
port->stopca=bc->stopca;
|
|
|
|
port->close_delay=50;
|
|
|
|
/*
|
|
* We don't use all the flags from <sys/ttydefaults.h> since they
|
|
* are only relevant for logins. It's important to have echo off
|
|
* initially so that the line doesn't start blathering before the
|
|
* echo flag can be turned off.
|
|
*/
|
|
port->it_in.c_iflag = TTYDEF_IFLAG;
|
|
port->it_in.c_oflag = TTYDEF_OFLAG;
|
|
port->it_in.c_cflag = TTYDEF_CFLAG;
|
|
port->it_in.c_lflag = TTYDEF_LFLAG;
|
|
termioschars(&port->it_in);
|
|
port->it_in.c_ispeed = port->it_in.c_ospeed = dgbdefaultrate;
|
|
port->it_out = port->it_in;
|
|
}
|
|
|
|
hidewin(sc);
|
|
|
|
/* register the polling function */
|
|
timeout(dgbpoll, (void *)unit, hz/25);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
int
|
|
dgbopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
struct dgb_softc *sc;
|
|
struct tty *tp;
|
|
int unit;
|
|
int mynor;
|
|
int pnum;
|
|
struct dgb_p *port;
|
|
int s;
|
|
int error;
|
|
struct board_chan *bc;
|
|
|
|
error=0;
|
|
|
|
mynor=minor(dev);
|
|
unit=MINOR_TO_UNIT(mynor);
|
|
pnum=MINOR_TO_PORT(mynor);
|
|
|
|
if(unit >= NDGB) {
|
|
DPRINT2("dgb%d: try to open a nonexisting card\n",unit);
|
|
return ENXIO;
|
|
}
|
|
|
|
sc=&dgb_softc[unit];
|
|
|
|
if(sc->status!=ENABLED) {
|
|
DPRINT2("dgb%d: try to open a disabled card\n",unit);
|
|
return ENXIO;
|
|
}
|
|
|
|
if(pnum>=sc->numports) {
|
|
DPRINT3("dgb%d: try to open non-existing port %d\n",unit,pnum);
|
|
return ENXIO;
|
|
}
|
|
|
|
if(mynor & CONTROL_MASK)
|
|
return 0;
|
|
|
|
tp=&sc->ttys[pnum];
|
|
port=&sc->ports[pnum];
|
|
bc=port->brdchan;
|
|
|
|
open_top:
|
|
|
|
s=spltty();
|
|
|
|
while(port->closing) {
|
|
error=tsleep(&port->closing, TTOPRI|PCATCH, "dgocl", 0);
|
|
|
|
if(error) {
|
|
DPRINT4("dgb%d: port %d: tsleep(dgocl) error=%d\n",unit,pnum,error);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (tp->t_state & TS_ISOPEN) {
|
|
/*
|
|
* The device is open, so everything has been initialized.
|
|
* Handle conflicts.
|
|
*/
|
|
if (mynor & CALLOUT_MASK) {
|
|
if (!port->active_out) {
|
|
error = EBUSY;
|
|
DPRINT4("dgb%d: port %d: BUSY error=%d\n",unit,pnum,error);
|
|
goto out;
|
|
}
|
|
} else {
|
|
if (port->active_out) {
|
|
if (flag & O_NONBLOCK) {
|
|
error = EBUSY;
|
|
DPRINT4("dgb%d: port %d: BUSY error=%d\n",unit,pnum,error);
|
|
goto out;
|
|
}
|
|
error = tsleep(&port->active_out,
|
|
TTIPRI | PCATCH, "dgbi", 0);
|
|
if (error != 0) {
|
|
DPRINT4("dgb%d: port %d: tsleep(dgbi) error=%d\n",
|
|
unit,pnum,error);
|
|
goto out;
|
|
}
|
|
splx(s);
|
|
goto open_top;
|
|
}
|
|
}
|
|
if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) {
|
|
error = EBUSY;
|
|
goto out;
|
|
}
|
|
} else {
|
|
/*
|
|
* The device isn't open, so there are no conflicts.
|
|
* Initialize it. Initialization is done twice in many
|
|
* cases: to preempt sleeping callin opens if we are
|
|
* callout, and to complete a callin open after DCD rises.
|
|
*/
|
|
tp->t_oproc=dgbstart;
|
|
tp->t_param=dgbparam;
|
|
tp->t_dev=dev;
|
|
tp->t_termios= (mynor & CALLOUT_MASK) ?
|
|
port->it_out :
|
|
port->it_in;
|
|
|
|
setwin(sc,0);
|
|
port->imodem=bc->mstat;
|
|
bc->rout=bc->rin; /* clear input queue */
|
|
bc->idata=1;
|
|
|
|
hidewin(sc);
|
|
|
|
port->wopeners++;
|
|
error=dgbparam(tp, &tp->t_termios);
|
|
port->wopeners--;
|
|
|
|
if(error!=0) {
|
|
DPRINT4("dgb%d: port %d: dgbparam error=%d\n",unit,pnum,error);
|
|
goto out;
|
|
}
|
|
|
|
ttsetwater(tp);
|
|
|
|
/* handle fake DCD for callout devices */
|
|
/* and initial DCD */
|
|
|
|
if( (port->imodem & port->dcd) || mynor & CALLOUT_MASK )
|
|
linesw[tp->t_line].l_modem(tp,1);
|
|
|
|
}
|
|
|
|
/*
|
|
* Wait for DCD if necessary.
|
|
*/
|
|
if (!(tp->t_state & TS_CARR_ON) && !(mynor & CALLOUT_MASK)
|
|
&& !(tp->t_cflag & CLOCAL) && !(flag & O_NONBLOCK)) {
|
|
++port->wopeners;
|
|
error = tsleep(TSA_CARR_ON(tp), TTIPRI | PCATCH, "dgdcd", 0);
|
|
--port->wopeners;
|
|
if (error != 0) {
|
|
DPRINT4("dgb%d: port %d: tsleep(dgdcd) error=%d\n",unit,pnum,error);
|
|
goto out;
|
|
}
|
|
splx(s);
|
|
goto open_top;
|
|
}
|
|
error = linesw[tp->t_line].l_open(dev, tp);
|
|
DPRINT4("dgb%d: port %d: l_open error=%d\n",unit,pnum,error);
|
|
|
|
if (tp->t_state & TS_ISOPEN && mynor & CALLOUT_MASK)
|
|
port->active_out = TRUE;
|
|
|
|
port->used=1;
|
|
|
|
out:
|
|
splx(s);
|
|
|
|
if( !(tp->t_state & TS_ISOPEN) && port->wopeners==0 )
|
|
dgbhardclose(port);
|
|
|
|
DPRINT4("dgb%d: port %d: open() returns %d\n",unit,pnum,error);
|
|
|
|
return error;
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
int
|
|
dgbclose(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag;
|
|
int mode;
|
|
struct proc *p;
|
|
{
|
|
int mynor;
|
|
struct tty *tp;
|
|
int unit, pnum;
|
|
struct dgb_softc *sc;
|
|
struct dgb_p *port;
|
|
int s;
|
|
|
|
mynor=minor(dev);
|
|
unit=MINOR_TO_UNIT(mynor);
|
|
pnum=MINOR_TO_PORT(mynor);
|
|
|
|
sc=&dgb_softc[unit];
|
|
tp=&sc->ttys[pnum];
|
|
port=sc->ports+pnum;
|
|
|
|
if(mynor & CONTROL_MASK)
|
|
return 0;
|
|
|
|
DPRINT3("dgb%d: port %d: closing\n",unit,pnum);
|
|
|
|
s=spltty();
|
|
|
|
port->closing=1;
|
|
linesw[tp->t_line].l_close(tp,flag);
|
|
dgb_drain_or_flush(port);
|
|
dgbhardclose(port);
|
|
ttyclose(tp);
|
|
port->closing=0; wakeup(&port->closing);
|
|
port->used=0;
|
|
|
|
splx(s);
|
|
|
|
wakeup(TSA_CARR_ON(tp));
|
|
wakeup(&port->active_out);
|
|
port->active_out=0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
dgbhardclose(port)
|
|
struct dgb_p *port;
|
|
{
|
|
struct dgb_softc *sc=&dgb_softc[port->unit];
|
|
struct board_chan *bc=port->brdchan;
|
|
int s;
|
|
|
|
setwin(sc,0);
|
|
|
|
bc->idata=0; bc->iempty=0; bc->ilow=0;
|
|
if(port->tty->t_cflag & HUPCL) {
|
|
port->omodem &= ~(RTS|DTR);
|
|
fepcmd(port, SETMODEM, 0, DTR|RTS, 0, 1);
|
|
}
|
|
|
|
hidewin(sc);
|
|
|
|
timeout(dgb_pause, &port->brdchan, hz/2);
|
|
tsleep(&port->brdchan, TTIPRI | PCATCH, "dgclo", 0);
|
|
}
|
|
|
|
static void
|
|
dgb_pause(chan)
|
|
void *chan;
|
|
{
|
|
wakeup((caddr_t)chan);
|
|
}
|
|
|
|
|
|
int
|
|
dgbread(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
int mynor;
|
|
struct tty *tp;
|
|
int error, unit, pnum;
|
|
|
|
mynor=minor(dev);
|
|
if (mynor & CONTROL_MASK)
|
|
return (ENODEV);
|
|
unit=MINOR_TO_UNIT(mynor);
|
|
pnum=MINOR_TO_PORT(mynor);
|
|
|
|
tp=&dgb_softc[unit].ttys[pnum];
|
|
|
|
error=linesw[tp->t_line].l_read(tp, uio, flag);
|
|
DPRINT4("dgb%d: port %d: read() returns %d\n",unit,pnum,error);
|
|
|
|
return error;
|
|
}
|
|
|
|
int
|
|
dgbwrite(dev, uio, flag)
|
|
dev_t dev;
|
|
struct uio *uio;
|
|
int flag;
|
|
{
|
|
int mynor;
|
|
struct tty *tp;
|
|
int error, unit, pnum;
|
|
|
|
mynor=minor(dev);
|
|
if (mynor & CONTROL_MASK)
|
|
return (ENODEV);
|
|
|
|
unit=MINOR_TO_UNIT(mynor);
|
|
pnum=MINOR_TO_PORT(mynor);
|
|
|
|
tp=&dgb_softc[unit].ttys[pnum];
|
|
|
|
error=linesw[tp->t_line].l_write(tp, uio, flag);
|
|
DPRINT4("dgb%d: port %d: write() returns %d\n",unit,pnum,error);
|
|
|
|
return error;
|
|
}
|
|
|
|
void dgbpoll(unit_c)
|
|
void *unit_c;
|
|
{
|
|
int unit=(int)unit_c;
|
|
int pnum;
|
|
struct dgb_p *port;
|
|
struct dgb_softc *sc=&dgb_softc[unit];
|
|
int head, tail;
|
|
u_char *eventbuf;
|
|
int event, mstat, lstat;
|
|
struct board_chan *bc;
|
|
struct tty *tp;
|
|
int rhead, rtail;
|
|
int whead, wtail;
|
|
int wrapmask;
|
|
int size;
|
|
int c=0;
|
|
u_char *ptr;
|
|
int ocount;
|
|
|
|
if(sc->status==DISABLED) {
|
|
printf("dgb%d: polling of disabled board stopped\n",unit);
|
|
return;
|
|
}
|
|
|
|
setwin(sc,0);
|
|
|
|
head=sc->mailbox->ein;
|
|
tail=sc->mailbox->eout;
|
|
|
|
while(head!=tail) {
|
|
if(head >= FEP_IMAX-FEP_ISTART
|
|
|| tail >= FEP_IMAX-FEP_ISTART
|
|
|| (head|tail) & 03 ) {
|
|
printf("dgb%d: event queue's head or tail is wrong!\n", unit);
|
|
break;
|
|
}
|
|
|
|
eventbuf=sc->vmem+tail+FEP_ISTART;
|
|
pnum=eventbuf[0];
|
|
event=eventbuf[1];
|
|
mstat=eventbuf[2];
|
|
lstat=eventbuf[3];
|
|
|
|
port=&sc->ports[pnum];
|
|
bc=port->brdchan;
|
|
tp=&sc->ttys[pnum];
|
|
|
|
if(pnum>=sc->numports || port->status==DISABLED) {
|
|
printf("dgb%d: port %d: got event on nonexisting port\n",unit,pnum);
|
|
} else if(port->used || port->wopeners>0 ) {
|
|
|
|
if( !(event & ALL_IND) )
|
|
printf("dgb%d: port%d: ? event 0x%x mstat 0x%x lstat 0x%x\n",
|
|
unit, pnum, event, mstat, lstat);
|
|
|
|
if(event & DATA_IND) {
|
|
DPRINT3("dgb%d: port %d: DATA_IND\n",unit,pnum);
|
|
|
|
wrapmask=port->rxbufsize-1;
|
|
|
|
rhead=bc->rin & wrapmask;
|
|
rtail=bc->rout & wrapmask;
|
|
|
|
if( !(tp->t_cflag & CREAD) || !port->used ) {
|
|
bc->rout=rhead;
|
|
goto end_of_data;
|
|
}
|
|
|
|
if(bc->orun) {
|
|
printf("dgb%d: port%d: overrun\n", unit, pnum);
|
|
bc->orun=0;
|
|
}
|
|
|
|
while(rhead!=rtail) {
|
|
DPRINT5("dgb%d: port %d: p rx head=%d tail=%d\n",
|
|
unit,pnum,rhead,rtail);
|
|
|
|
if(rhead>rtail)
|
|
size=rhead-rtail;
|
|
else
|
|
size=port->rxbufsize-rtail;
|
|
|
|
ptr=port->rxptr+rtail;
|
|
|
|
for(c=0; c<size; c++) {
|
|
int chr;
|
|
|
|
towin(sc,port->rxwin);
|
|
chr= *ptr++;
|
|
|
|
#if 0
|
|
if(chr>=' ' && chr<127)
|
|
DPRINT4("dgb%d: port %d: got char '%c'\n",
|
|
unit,pnum,chr);
|
|
else
|
|
DPRINT4("dgb%d: port %d: got char 0x%x\n",
|
|
unit,pnum,chr);
|
|
#endif
|
|
|
|
hidewin(sc);
|
|
linesw[tp->t_line].l_rint(chr, tp);
|
|
}
|
|
|
|
setwin(sc,0);
|
|
rtail= (rtail + size) & wrapmask;
|
|
bc->rout=rtail;
|
|
rhead=bc->rin & wrapmask;
|
|
}
|
|
|
|
end_of_data:
|
|
}
|
|
|
|
if(event & MODEMCHG_IND) {
|
|
DPRINT3("dgb%d: port %d: MODEMCHG_IND\n",unit,pnum);
|
|
port->imodem=mstat;
|
|
if(mstat & port->dcd) {
|
|
hidewin(sc);
|
|
linesw[tp->t_line].l_modem(tp,1);
|
|
setwin(sc,0);
|
|
wakeup(TSA_CARR_ON(tp));
|
|
} else {
|
|
hidewin(sc);
|
|
linesw[tp->t_line].l_modem(tp,0);
|
|
setwin(sc,0);
|
|
if( port->draining) {
|
|
port->draining=0;
|
|
wakeup(&port->draining);
|
|
}
|
|
}
|
|
}
|
|
|
|
if(event & BREAK_IND) {
|
|
DPRINT3("dgb%d: port %d: BREAK_IND\n",unit,pnum);
|
|
hidewin(sc);
|
|
linesw[tp->t_line].l_rint(TTY_BI, tp);
|
|
setwin(sc,0);
|
|
}
|
|
|
|
if(event & (LOWTX_IND | EMPTYTX_IND) ) {
|
|
DPRINT3("dgb%d: port %d: LOWTX_IND or EMPTYTX_IND\n",unit,pnum);
|
|
|
|
if( (event & EMPTYTX_IND ) && tp->t_outq.c_cc==0
|
|
&& port->draining) {
|
|
port->draining=0;
|
|
wakeup(&port->draining);
|
|
bc->ilow=0; bc->iempty=0;
|
|
}
|
|
|
|
wrapmask=port->txbufsize;
|
|
|
|
while( tp->t_outq.c_cc!=0 ) {
|
|
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
|
|
ttwwakeup(tp);
|
|
#else
|
|
if(tp->t_outq.c_cc <= tp->t_lowat) {
|
|
if(tp->t_state & TS_ASLEEP) {
|
|
tp->t_state &= ~TS_ASLEEP;
|
|
wakeup(TSA_OLOWAT(tp));
|
|
}
|
|
selwakeup(&tp->t_wsel);
|
|
}
|
|
#endif
|
|
setwin(sc,0);
|
|
|
|
whead=bc->tin & wrapmask;
|
|
wtail=bc->tout & wrapmask;
|
|
|
|
DPRINT5("dgb%d: port%d: p tx head=%d tail=%d\n",
|
|
unit,pnum,whead,wtail);
|
|
|
|
if(whead<wtail)
|
|
size=wtail-whead-1;
|
|
else {
|
|
size=port->txbufsize-whead;
|
|
if(wtail==0)
|
|
size--;
|
|
}
|
|
|
|
if(size==0) {
|
|
bc->iempty=1; bc->ilow=1;
|
|
goto end_of_buffer;
|
|
}
|
|
|
|
towin(sc,port->txwin);
|
|
|
|
ocount=q_to_b(&tp->t_outq, port->txptr+whead, size);
|
|
whead+=ocount;
|
|
|
|
setwin(sc,0);
|
|
bc->tin=whead;
|
|
}
|
|
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
|
|
ttwwakeup(tp);
|
|
#else
|
|
if(tp->t_state & TS_ASLEEP) {
|
|
tp->t_state &= ~TS_ASLEEP;
|
|
wakeup(TSA_OLOWAT(tp));
|
|
}
|
|
tp->t_state &= ~TS_BUSY;
|
|
#endif
|
|
end_of_buffer:
|
|
}
|
|
} else {
|
|
DPRINT4("dgb%d: port %d: got event 0x%x on closed port\n",
|
|
unit,pnum,event);
|
|
bc->rout=bc->rin;
|
|
bc->idata=bc->iempty=bc->ilow=0;
|
|
}
|
|
|
|
bc->idata=1;
|
|
|
|
tail= (tail+4) & (FEP_IMAX-FEP_ISTART-4);
|
|
}
|
|
|
|
sc->mailbox->eout=tail;
|
|
hidewin(sc);
|
|
|
|
timeout(dgbpoll, unit_c, hz/25);
|
|
}
|
|
|
|
void
|
|
dgbintr(unit)
|
|
int unit;
|
|
{
|
|
}
|
|
|
|
int
|
|
dgbioctl(dev, cmd, data, flag, p)
|
|
dev_t dev;
|
|
int cmd;
|
|
caddr_t data;
|
|
int flag;
|
|
struct proc *p;
|
|
{
|
|
struct dgb_softc *sc;
|
|
int unit, pnum;
|
|
struct dgb_p *port;
|
|
int mynor;
|
|
struct tty *tp;
|
|
struct board_chan *bc;
|
|
int error;
|
|
int s;
|
|
int tiocm_xxx;
|
|
|
|
mynor=minor(dev);
|
|
unit=MINOR_TO_UNIT(mynor);
|
|
pnum=MINOR_TO_PORT(mynor);
|
|
|
|
sc=&dgb_softc[unit];
|
|
port=&sc->ports[pnum];
|
|
tp=&sc->ttys[pnum];
|
|
bc=port->brdchan;
|
|
|
|
if (mynor & CONTROL_MASK) {
|
|
struct termios *ct;
|
|
|
|
switch (mynor & CONTROL_MASK) {
|
|
case CONTROL_INIT_STATE:
|
|
ct = mynor & CALLOUT_MASK ? &port->it_out : &port->it_in;
|
|
break;
|
|
case CONTROL_LOCK_STATE:
|
|
ct = mynor & CALLOUT_MASK ? &port->lt_out : &port->lt_in;
|
|
break;
|
|
default:
|
|
return (ENODEV); /* /dev/nodev */
|
|
}
|
|
switch (cmd) {
|
|
case TIOCSETA:
|
|
error = suser(p->p_ucred, &p->p_acflag);
|
|
if (error != 0)
|
|
return (error);
|
|
*ct = *(struct termios *)data;
|
|
return (0);
|
|
case TIOCGETA:
|
|
*(struct termios *)data = *ct;
|
|
return (0);
|
|
case TIOCGETD:
|
|
*(int *)data = TTYDISC;
|
|
return (0);
|
|
case TIOCGWINSZ:
|
|
bzero(data, sizeof(struct winsize));
|
|
return (0);
|
|
default:
|
|
return (ENOTTY);
|
|
}
|
|
}
|
|
|
|
if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
|
|
int cc;
|
|
struct termios *dt = (struct termios *)data;
|
|
struct termios *lt = mynor & CALLOUT_MASK
|
|
? &port->lt_out : &port->lt_in;
|
|
|
|
dt->c_iflag = (tp->t_iflag & lt->c_iflag)
|
|
| (dt->c_iflag & ~lt->c_iflag);
|
|
dt->c_oflag = (tp->t_oflag & lt->c_oflag)
|
|
| (dt->c_oflag & ~lt->c_oflag);
|
|
dt->c_cflag = (tp->t_cflag & lt->c_cflag)
|
|
| (dt->c_cflag & ~lt->c_cflag);
|
|
dt->c_lflag = (tp->t_lflag & lt->c_lflag)
|
|
| (dt->c_lflag & ~lt->c_lflag);
|
|
for (cc = 0; cc < NCCS; ++cc)
|
|
if (lt->c_cc[cc] != 0)
|
|
dt->c_cc[cc] = tp->t_cc[cc];
|
|
if (lt->c_ispeed != 0)
|
|
dt->c_ispeed = tp->t_ispeed;
|
|
if (lt->c_ospeed != 0)
|
|
dt->c_ospeed = tp->t_ospeed;
|
|
}
|
|
|
|
if(cmd==TIOCSTOP) {
|
|
setwin(sc,0);
|
|
fepcmd(port, PAUSETX, 0, 0, 0, 0);
|
|
hidewin(sc);
|
|
return 0;
|
|
} else if(cmd==TIOCSTART) {
|
|
setwin(sc,0);
|
|
fepcmd(port, RESUMETX, 0, 0, 0, 0);
|
|
hidewin(sc);
|
|
return 0;
|
|
}
|
|
|
|
if(cmd==TIOCSETAW || cmd==TIOCSETAF)
|
|
port->mustdrain=1;
|
|
|
|
error = linesw[tp->t_line].l_ioctl(tp, cmd, data, flag, p);
|
|
|
|
if (error >= 0)
|
|
return error;
|
|
error = ttioctl(tp, cmd, data, flag);
|
|
|
|
port->mustdrain=0;
|
|
|
|
if (error >= 0)
|
|
return error;
|
|
s = spltty();
|
|
switch (cmd) {
|
|
case TIOCSBRK:
|
|
error=dgbdrain(port);
|
|
|
|
if(error!=0) {
|
|
splx(s);
|
|
return error;
|
|
}
|
|
|
|
setwin(sc,0);
|
|
|
|
/* now it sends 250 millisecond break because I don't know */
|
|
/* how to send an infinite break */
|
|
|
|
fepcmd(port, SENDBREAK, 250, 0, 10, 0);
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCCBRK:
|
|
/* now it's empty */
|
|
break;
|
|
case TIOCSDTR:
|
|
DPRINT3("dgb%d: port %d: set DTR\n",unit,pnum);
|
|
port->omodem |= DTR;
|
|
setwin(sc,0);
|
|
fepcmd(port, SETMODEM, port->omodem, RTS, 0, 1);
|
|
|
|
if( !(bc->mstat & DTR) ) {
|
|
DPRINT3("dgb%d: port %d: DTR is off\n",unit,pnum);
|
|
}
|
|
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCCDTR:
|
|
DPRINT3("dgb%d: port %d: reset DTR\n",unit,pnum);
|
|
port->omodem &= ~DTR;
|
|
setwin(sc,0);
|
|
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
|
|
|
|
if( bc->mstat & DTR ) {
|
|
DPRINT3("dgb%d: port %d: DTR is on\n",unit,pnum);
|
|
}
|
|
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCMSET:
|
|
if(*(int *)data & TIOCM_DTR)
|
|
port->omodem |=DTR;
|
|
else
|
|
port->omodem &=~DTR;
|
|
|
|
if(*(int *)data & TIOCM_RTS)
|
|
port->omodem |=RTS;
|
|
else
|
|
port->omodem &=~RTS;
|
|
|
|
setwin(sc,0);
|
|
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCMBIS:
|
|
if(*(int *)data & TIOCM_DTR)
|
|
port->omodem |=DTR;
|
|
|
|
if(*(int *)data & TIOCM_RTS)
|
|
port->omodem |=RTS;
|
|
|
|
setwin(sc,0);
|
|
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCMBIC:
|
|
if(*(int *)data & TIOCM_DTR)
|
|
port->omodem &=~DTR;
|
|
|
|
if(*(int *)data & TIOCM_RTS)
|
|
port->omodem &=~RTS;
|
|
|
|
setwin(sc,0);
|
|
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
|
|
hidewin(sc);
|
|
break;
|
|
case TIOCMGET:
|
|
setwin(sc,0);
|
|
port->imodem=bc->mstat;
|
|
hidewin(sc);
|
|
|
|
tiocm_xxx = TIOCM_LE; /* XXX - always enabled while open */
|
|
|
|
DPRINT3("dgb%d: port %d: modem stat -- ",unit,pnum);
|
|
|
|
if (port->imodem & DTR) {
|
|
DPRINT1("DTR ");
|
|
tiocm_xxx |= TIOCM_DTR;
|
|
}
|
|
if (port->imodem & RTS) {
|
|
DPRINT1("RTS ");
|
|
tiocm_xxx |= TIOCM_RTS;
|
|
}
|
|
if (port->imodem & CTS) {
|
|
DPRINT1("CTS ");
|
|
tiocm_xxx |= TIOCM_CTS;
|
|
}
|
|
if (port->imodem & port->dcd) {
|
|
DPRINT1("DCD ");
|
|
tiocm_xxx |= TIOCM_CD;
|
|
}
|
|
if (port->imodem & port->dsr) {
|
|
DPRINT1("DSR ");
|
|
tiocm_xxx |= TIOCM_DSR;
|
|
}
|
|
if (port->imodem & RI) {
|
|
DPRINT1("RI ");
|
|
tiocm_xxx |= TIOCM_RI;
|
|
}
|
|
*(int *)data = tiocm_xxx;
|
|
DPRINT1("--\n");
|
|
break;
|
|
default:
|
|
splx(s);
|
|
return ENOTTY;
|
|
}
|
|
splx(s);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wakeflush(p)
|
|
void *p;
|
|
{
|
|
struct dgb_p *port=p;
|
|
|
|
wakeup(&port->draining);
|
|
}
|
|
|
|
/* wait for the output to drain */
|
|
|
|
static int
|
|
dgbdrain(port)
|
|
struct dgb_p *port;
|
|
{
|
|
struct tty *tp=port->tty;
|
|
struct dgb_softc *sc=&dgb_softc[port->unit];
|
|
struct board_chan *bc=port->brdchan;
|
|
int error;
|
|
int head, tail;
|
|
|
|
setwin(sc,0);
|
|
|
|
bc->iempty=1;
|
|
tail=bc->tout;
|
|
head=bc->tin;
|
|
|
|
while(tail!=head) {
|
|
DPRINT5("dgb%d: port %d: drain: head=%d tail=%d\n",
|
|
port->unit, port->pnum, head, tail);
|
|
|
|
hidewin(sc);
|
|
port->draining=1;
|
|
timeout(wakeflush,port, hz);
|
|
error=tsleep(&port->draining, TTIPRI | PCATCH, "dgdrn", 0);
|
|
port->draining=0;
|
|
setwin(sc,0);
|
|
|
|
if (error != 0) {
|
|
DPRINT4("dgb%d: port %d: tsleep(dgdrn) error=%d\n",
|
|
port->unit,port->pnum,error);
|
|
|
|
bc->iempty=0;
|
|
hidewin(sc);
|
|
return error;
|
|
}
|
|
|
|
tail=bc->tout;
|
|
head=bc->tin;
|
|
}
|
|
DPRINT5("dgb%d: port %d: drain: head=%d tail=%d\n",
|
|
port->unit, port->pnum, head, tail);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* wait for the output to drain */
|
|
/* or simply clear the buffer it it's stopped */
|
|
|
|
static void
|
|
dgb_drain_or_flush(port)
|
|
struct dgb_p *port;
|
|
{
|
|
struct tty *tp=port->tty;
|
|
struct dgb_softc *sc=&dgb_softc[port->unit];
|
|
struct board_chan *bc=port->brdchan;
|
|
int error;
|
|
int lasttail;
|
|
int head, tail;
|
|
|
|
setwin(sc,0);
|
|
|
|
lasttail=-1;
|
|
bc->iempty=1;
|
|
tail=bc->tout;
|
|
head=bc->tin;
|
|
|
|
while(tail!=head /* && tail!=lasttail */ ) {
|
|
DPRINT5("dgb%d: port %d: flush: head=%d tail=%d\n",
|
|
port->unit, port->pnum, head, tail);
|
|
|
|
/* if there is no carrier simply clean the buffer */
|
|
if( !(tp->t_state & TS_CARR_ON) ) {
|
|
bc->tout=bc->tin=0;
|
|
bc->iempty=0;
|
|
hidewin(sc);
|
|
return;
|
|
}
|
|
|
|
hidewin(sc);
|
|
port->draining=1;
|
|
timeout(wakeflush,port, hz);
|
|
error=tsleep(&port->draining, TTIPRI | PCATCH, "dgfls", 0);
|
|
port->draining=0;
|
|
setwin(sc,0);
|
|
|
|
if (error != 0) {
|
|
DPRINT4("dgb%d: port %d: tsleep(dgfls) error=%d\n",
|
|
port->unit,port->pnum,error);
|
|
|
|
/* silently clean the buffer */
|
|
|
|
bc->tout=bc->tin=0;
|
|
bc->iempty=0;
|
|
hidewin(sc);
|
|
return;
|
|
}
|
|
|
|
lasttail=tail;
|
|
tail=bc->tout;
|
|
head=bc->tin;
|
|
}
|
|
DPRINT5("dgb%d: port %d: flush: head=%d tail=%d\n",
|
|
port->unit, port->pnum, head, tail);
|
|
}
|
|
|
|
static int
|
|
dgbparam(tp, t)
|
|
struct tty *tp;
|
|
struct termios *t;
|
|
{
|
|
int dev=tp->t_dev;
|
|
int mynor=minor(dev);
|
|
int unit=MINOR_TO_UNIT(dev);
|
|
int pnum=MINOR_TO_PORT(dev);
|
|
struct dgb_softc *sc=&dgb_softc[unit];
|
|
struct dgb_p *port=&sc->ports[pnum];
|
|
struct board_chan *bc=port->brdchan;
|
|
int cflag;
|
|
int head;
|
|
int mval;
|
|
int iflag;
|
|
int hflow;
|
|
int s;
|
|
|
|
DPRINT3("dgb%d: port%d: setting parameters\n",unit,pnum);
|
|
|
|
if(port->mustdrain) {
|
|
DPRINT3("dgb%d: port%d: must call dgbdrain()\n",unit,pnum);
|
|
dgbdrain(port);
|
|
}
|
|
|
|
cflag=ttspeedtab(t->c_ospeed, dgbspeedtab);
|
|
|
|
if (t->c_ispeed == 0)
|
|
t->c_ispeed = t->c_ospeed;
|
|
|
|
if (cflag < 0 || cflag > 0 && t->c_ispeed != t->c_ospeed)
|
|
return (EINVAL);
|
|
|
|
s=spltty();
|
|
|
|
setwin(sc,0);
|
|
|
|
if(cflag==0) { /* hangup */
|
|
DPRINT3("dgb%d: port%d: hangup\n",unit,pnum);
|
|
head=bc->rin;
|
|
bc->rout=head;
|
|
head=bc->tin;
|
|
fepcmd(port, STOUT, head, 0, 0, 0);
|
|
mval= port->omodem & ~(DTR|RTS);
|
|
} else {
|
|
DPRINT4("dgb%d: port%d: CBAUD=%d\n",unit,pnum,cflag);
|
|
|
|
/* convert flags to sysV-style values */
|
|
if(t->c_cflag & PARODD)
|
|
cflag|=01000;
|
|
if(t->c_cflag & PARENB)
|
|
cflag|=00400;
|
|
if(t->c_cflag & CSTOPB)
|
|
cflag|=00100;
|
|
|
|
cflag|= (t->c_cflag & CSIZE) >> 4;
|
|
DPRINT4("dgb%d: port%d: CFLAG=0x%x\n",unit,pnum,cflag);
|
|
|
|
if(cflag!=port->fepcflag) {
|
|
DPRINT3("dgb%d: port%d: set cflag\n",unit,pnum);
|
|
port->fepcflag=cflag;
|
|
fepcmd(port, SETCTRLFLAGS, (unsigned)cflag, 0, 0, 0);
|
|
}
|
|
mval= port->omodem | (DTR|RTS) ;
|
|
}
|
|
|
|
iflag=t->c_iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK|ISTRIP);
|
|
if(t->c_cflag & IXON)
|
|
cflag|=002000;
|
|
if(t->c_cflag & IXANY)
|
|
cflag|=004000;
|
|
if(t->c_cflag & IXOFF)
|
|
cflag|=010000;
|
|
|
|
if(iflag!=port->fepiflag) {
|
|
DPRINT3("dgb%d: port%d: set iflag\n",unit,pnum);
|
|
port->fepiflag=iflag;
|
|
fepcmd(port, SETIFLAGS, (unsigned)iflag, 0, 0, 0);
|
|
}
|
|
|
|
bc->mint=port->dcd;
|
|
|
|
if(t->c_cflag & CRTSCTS)
|
|
hflow=(CTS|RTS);
|
|
else
|
|
hflow=0;
|
|
|
|
if(hflow!=port->hflow) {
|
|
DPRINT3("dgb%d: port%d: set hflow\n",unit,pnum);
|
|
port->hflow=hflow;
|
|
fepcmd(port, SETHFLOW, (unsigned)hflow, 0xff, 0, 1);
|
|
}
|
|
|
|
if(port->omodem != mval) {
|
|
DPRINT4("dgb%d: port %d: setting modem parameters 0x%x\n",
|
|
unit,pnum,mval);
|
|
port->omodem=mval;
|
|
fepcmd(port, SETMODEM, (unsigned)mval, RTS|DTR, 0, 1);
|
|
}
|
|
|
|
if(port->fepstartc!=t->c_cc[VSTART] || port->fepstopc!=t->c_cc[VSTOP]) {
|
|
DPRINT3("dgb%d: port%d: set startc, stopc\n",unit,pnum);
|
|
port->fepstartc=t->c_cc[VSTART];
|
|
port->fepstopc=t->c_cc[VSTOP];
|
|
fepcmd(port, SONOFFC, port->fepstartc, port->fepstopc, 0, 1);
|
|
}
|
|
|
|
hidewin(sc);
|
|
splx(s);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static void
|
|
dgbstart(tp)
|
|
struct tty *tp;
|
|
{
|
|
int unit;
|
|
int pnum;
|
|
struct dgb_p *port;
|
|
struct dgb_softc *sc;
|
|
struct board_chan *bc;
|
|
int head, tail;
|
|
int size, ocount;
|
|
int s;
|
|
int wmask;
|
|
|
|
unit=MINOR_TO_UNIT(minor(tp->t_dev));
|
|
pnum=MINOR_TO_PORT(minor(tp->t_dev));
|
|
sc=&dgb_softc[unit];
|
|
port=&sc->ports[pnum];
|
|
bc=port->brdchan;
|
|
|
|
wmask=port->txbufsize-1;
|
|
|
|
s=spltty();
|
|
|
|
while( tp->t_outq.c_cc!=0 ) {
|
|
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
|
|
ttwwakeup(tp);
|
|
#else
|
|
if(tp->t_outq.c_cc <= tp->t_lowat) {
|
|
if(tp->t_state & TS_ASLEEP) {
|
|
tp->t_state &= ~TS_ASLEEP;
|
|
wakeup(TSA_OLOWAT(tp));
|
|
}
|
|
selwakeup(&tp->t_wsel);
|
|
}
|
|
#endif
|
|
setwin(sc,0);
|
|
|
|
head=bc->tin & wmask;
|
|
tail=bc->tout & wmask;
|
|
|
|
DPRINT5("dgb%d: port%d: s tx head=%d tail=%d\n",unit,pnum,head,tail);
|
|
|
|
if(tail>head)
|
|
size=tail-head-1;
|
|
else {
|
|
size=port->txbufsize-head;
|
|
if(tail==0)
|
|
size--;
|
|
}
|
|
|
|
if(size==0) {
|
|
bc->iempty=1; bc->ilow=1;
|
|
hidewin(sc);
|
|
tp->t_state|=TS_BUSY;
|
|
splx(s);
|
|
return;
|
|
}
|
|
|
|
towin(sc,port->txwin);
|
|
|
|
ocount=q_to_b(&tp->t_outq, port->txptr+head, size);
|
|
head+=ocount;
|
|
|
|
setwin(sc,0);
|
|
bc->tin=head;
|
|
}
|
|
|
|
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
|
|
ttwwakeup(tp);
|
|
#else
|
|
if(tp->t_state & TS_ASLEEP) {
|
|
tp->t_state &= ~TS_ASLEEP;
|
|
wakeup(TSA_OLOWAT(tp));
|
|
}
|
|
tp->t_state&=~TS_BUSY;
|
|
#endif
|
|
hidewin(sc);
|
|
splx(s);
|
|
}
|
|
|
|
void
|
|
dgbstop(tp, rw)
|
|
struct tty *tp;
|
|
int rw;
|
|
{
|
|
}
|
|
|
|
struct tty *
|
|
dgbdevtotty(dev)
|
|
dev_t dev;
|
|
{
|
|
int mynor, pnum, unit;
|
|
struct dgb_softc *sc;
|
|
|
|
mynor = minor(dev);
|
|
if (mynor & CONTROL_MASK)
|
|
return (NULL);
|
|
unit = MINOR_TO_UNIT(mynor);
|
|
if ((u_int) unit >= NDGB)
|
|
return (NULL);
|
|
pnum = MINOR_TO_PORT(mynor);
|
|
sc = &dgb_softc[unit];
|
|
if (pnum >= sc->numports)
|
|
return (NULL);
|
|
return (&sc->ttys[pnum]);
|
|
}
|
|
|
|
static void
|
|
fepcmd(port, cmd, op1, op2, ncmds, bytecmd)
|
|
struct dgb_p *port;
|
|
int cmd, op1, op2, ncmds, bytecmd;
|
|
{
|
|
struct dgb_softc *sc=&dgb_softc[port->unit];
|
|
u_char *mem=sc->vmem;
|
|
unsigned tail, head;
|
|
int count, n;
|
|
|
|
if(port->status==DISABLED) {
|
|
printf("dgb%d(%d): FEP command on disabled port\n",
|
|
port->unit, port->pnum);
|
|
return;
|
|
}
|
|
|
|
setwin(sc,0);
|
|
head=sc->mailbox->cin;
|
|
|
|
if(head>=(FEP_CMAX-FEP_CSTART) || (head & 3)) {
|
|
printf("dgb%d(%d): wrong pointer head of command queue : 0x%x\n",
|
|
port->unit, port->pnum, head);
|
|
return;
|
|
}
|
|
|
|
if(bytecmd) {
|
|
mem[head+FEP_CSTART+0]=cmd;
|
|
mem[head+FEP_CSTART+1]=port->pnum;
|
|
mem[head+FEP_CSTART+2]=op1;
|
|
mem[head+FEP_CSTART+3]=op2;
|
|
} else {
|
|
mem[head+FEP_CSTART+0]=cmd;
|
|
mem[head+FEP_CSTART+1]=port->pnum;
|
|
*(ushort *)(mem+head+FEP_CSTART+2)=op1;
|
|
}
|
|
|
|
head=(head+4) & (FEP_CMAX-FEP_CSTART-4);
|
|
sc->mailbox->cin=head;
|
|
|
|
for(count=FEPTIMEOUT; count>0; count--) {
|
|
head=sc->mailbox->cin;
|
|
tail=sc->mailbox->cout;
|
|
n=(head-tail) & (FEP_CMAX-FEP_CSTART-4);
|
|
|
|
if(n <= ncmds * 4)
|
|
return;
|
|
}
|
|
|
|
printf("dgb%d(%d): timeout on FEP command\n",
|
|
port->unit, port->pnum);
|
|
}
|
|
|
|
#ifdef JREMOD
|
|
struct cdevsw dgb_cdevsw =
|
|
{ dgbopen, dgbclose, dgbread, dgbwrite, /*58*/
|
|
dgbioctl, dgbstop, nxreset, dgbdevtotty, /* dgb */
|
|
ttselect, nommap, NULL };
|
|
|
|
static dgb_devsw_installed = 0;
|
|
|
|
static void dgb_drvinit(void *unused)
|
|
{
|
|
dev_t dev;
|
|
|
|
if( ! dgb_devsw_installed ) {
|
|
dev = makedev(CDEV_MAJOR,0);
|
|
cdevsw_add(&dev,&dgb_cdevsw,NULL);
|
|
dgb_devsw_installed = 1;
|
|
#ifdef DEVFS
|
|
{
|
|
int x;
|
|
/* default for a simple device with no probe routine (usually delete this) */
|
|
x=devfs_add_devsw(
|
|
/* path name major minor type uid gid perm*/
|
|
"/", "dgb", major(dev), 0, DV_CHR, 0, 0, 0600);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
SYSINIT(dgbdev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,dgb_drvinit,NULL)
|
|
|
|
#endif /* JREMOD */
|
|
|
|
#endif /* NDGB > 0 */
|