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freebsd-skq/sys/dev/dgb/dgb.c
John Baldwin 44731cab3b Change the suser() API to take advantage of td_ucred as well as do a 
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00

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/*-
* dgb.c $FreeBSD$
*
* Digiboard driver.
*
* Stage 1. "Better than nothing".
* Stage 2. "Gee, it works!".
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions of binary code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification, in the accompanying documentation.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Written by Sergey Babkin,
* Joint Stock Commercial Bank "Chelindbank"
* (Chelyabinsk, Russia)
* babkin@freebsd.org
*
* Assorted hacks to make it more functional and working under 3.0-current.
* Fixed broken routines to prevent processes hanging on closed (thanks
* to Bruce for his patience and assistance). Thanks also to Maxim Bolotin
* <max@run.net> for his patches which did most of the work to get this
* running under 2.2/3.0-current.
* Implemented ioctls: TIOCMSDTRWAIT, TIOCMGDTRWAIT, TIOCTIMESTAMP &
* TIOCDCDTIMESTAMP.
* Sysctl debug flag is now a bitflag, to filter noise during debugging.
* David L. Nugent <davidn@blaze.net.au>
*
* There was a copyright confusion: I thought that having read the
* GLPed drivers makes me mentally contaminated but in fact it does
* not. Since the Linux driver by Troy De Jongh <troyd@digibd.com> or
* <troyd@skypoint.com> was used unly to learn the Digi's interface,
* I've returned this driver to a BSD-style license. I tried to contact
* all the contributors and those who replied agreed with license
* change. If you did any contribution when the driver was GPLed and do
* not agree with the BSD-style re-licensing please contact me.
* -SB
*/
#include "opt_compat.h"
#include "opt_dgb.h"
#include "dgb.h"
/* Helg: i.e.25 times per sec board will be polled */
#define POLLSPERSEC 25
/* How many charactes can we write to input tty rawq */
#define DGB_IBUFSIZE (TTYHOG-100)
/* 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/tty.h>
#include <sys/conf.h>
#include <sys/dkstat.h>
#include <sys/fcntl.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <i386/isa/isa_device.h>
#ifndef COMPAT_OLDISA
#error "The dgb device requires the old isa compatibility shims"
#endif
#include <dev/dgb/dgbios.h>
#include <dev/dgb/dgfep.h>
#define DGB_DEBUG /* Enable debugging info via sysctl */
#include <dev/dgb/dgreg.h>
#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;
volatile 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;
bool_t do_timestamp;
bool_t do_dcd_timestamp;
struct timeval timestamp;
struct timeval dcd_timestamp;
/* 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 ? */
int numports; /* number of ports on card */
int 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;
};
static struct dgb_softc dgb_softc[NDGB];
static struct dgb_p dgb_ports[NDGBPORTS];
static 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. */
static void dgbpoll (void *unit_c);
/* Device switch entry points. */
#define dgbreset noreset
#define dgbmmap nommap
#define dgbstrategy nostrategy
static int dgbattach (struct isa_device *dev);
static int dgbprobe (struct isa_device *dev);
static void fepcmd(struct dgb_p *port, unsigned cmd, unsigned op1, unsigned op2,
unsigned ncmds, unsigned bytecmd);
static void dgbstart (struct tty *tp);
static void dgbstop (struct tty *tp, int rw);
static int dgbparam (struct tty *tp, struct termios *t);
static void dgbhardclose (struct dgb_p *port);
static void dgb_drain_or_flush (struct dgb_p *port);
static int dgbdrain (struct dgb_p *port);
static void dgb_pause (void *chan);
static void wakeflush (void *p);
static void disc_optim (struct tty *tp, struct termios *t);
struct isa_driver dgbdriver = {
INTR_TYPE_TTY,
dgbprobe,
dgbattach,
"dgb",
0
};
COMPAT_ISA_DRIVER(dgb, dgbdriver);
static d_open_t dgbopen;
static d_close_t dgbclose;
static d_ioctl_t dgbioctl;
#define CDEV_MAJOR 58
static struct cdevsw dgb_cdevsw = {
/* open */ dgbopen,
/* close */ dgbclose,
/* read */ ttyread,
/* write */ ttywrite,
/* ioctl */ dgbioctl,
/* poll */ ttypoll,
/* mmap */ nommap,
/* strategy */ nostrategy,
/* name */ "dgb",
/* maj */ CDEV_MAJOR,
/* dump */ nodump,
/* psize */ nopsize,
/* flags */ D_TTY | D_KQFILTER,
/* kqfilter */ ttykqfilter,
};
static speed_t dgbdefaultrate = TTYDEF_SPEED;
static struct speedtab dgbspeedtab[] = {
{ 0, FEP_B0 }, /* old (sysV-like) Bx codes */
{ 50, FEP_B50 },
{ 75, FEP_B75 },
{ 110, FEP_B110 },
{ 134, FEP_B134 },
{ 150, FEP_B150 },
{ 200, FEP_B200 },
{ 300, FEP_B300 },
{ 600, FEP_B600 },
{ 1200, FEP_B1200 },
{ 1800, FEP_B1800 },
{ 2400, FEP_B2400 },
{ 4800, FEP_B4800 },
{ 9600, FEP_B9600 },
{ 19200, FEP_B19200 },
{ 38400, FEP_B38400 },
{ 57600, (FEP_FASTBAUD|FEP_B50) }, /* B50 & fast baud table */
{ 115200, (FEP_FASTBAUD|FEP_B110) }, /* B100 & fast baud table */
{ -1, -1 }
};
static struct dbgflagtbl
{
tcflag_t in_mask;
tcflag_t in_val;
tcflag_t out_val;
} dgb_cflags[] =
{
{ PARODD, PARODD, FEP_PARODD },
{ PARENB, PARENB, FEP_PARENB },
{ CSTOPB, CSTOPB, FEP_CSTOPB },
{ CSIZE, CS5, FEP_CS6 },
{ CSIZE, CS6, FEP_CS6 },
{ CSIZE, CS7, FEP_CS7 },
{ CSIZE, CS8, FEP_CS8 },
{ CLOCAL, CLOCAL, FEP_CLOCAL },
{ (tcflag_t)-1 }
}, dgb_iflags[] =
{
{ IGNBRK, IGNBRK, FEP_IGNBRK },
{ BRKINT, BRKINT, FEP_BRKINT },
{ IGNPAR, IGNPAR, FEP_IGNPAR },
{ PARMRK, PARMRK, FEP_PARMRK },
{ INPCK, INPCK, FEP_INPCK },
{ ISTRIP, ISTRIP, FEP_ISTRIP },
{ IXON, IXON, FEP_IXON },
{ IXOFF, IXOFF, FEP_IXOFF },
{ IXANY, IXANY, FEP_IXANY },
{ (tcflag_t)-1 }
}, dgb_flow[] =
{
{ CRTSCTS, CRTSCTS, CTS|RTS },
{ CRTSCTS, CCTS_OFLOW, CTS },
{ CRTSCTS, CRTS_IFLOW, RTS },
{ (tcflag_t)-1 }
};
/* xlat bsd termios flags to dgb sys-v style */
static tcflag_t
dgbflags(struct dbgflagtbl *tbl, tcflag_t input)
{
tcflag_t output = 0;
int i;
for (i=0; tbl[i].in_mask != (tcflag_t)-1; i++)
{
if ((input & tbl[i].in_mask) == tbl[i].in_val)
output |= tbl[i].out_val;
}
return output;
}
#ifdef DGB_DEBUG
static int dgbdebug=0;
SYSCTL_INT(_debug, OID_AUTO, dgb_debug, CTLFLAG_RW, &dgbdebug, 0, "");
#endif
static __inline int setwin(struct dgb_softc *sc, unsigned addr);
static __inline int setinitwin(struct dgb_softc *sc, unsigned addr);
static __inline void hidewin(struct dgb_softc *sc);
static __inline void towin(struct dgb_softc *sc, int win);
/*Helg: to allow recursive dgb...() calls */
typedef struct
{ /* If we were called and don't want to disturb we need: */
int port; /* write to this port */
u_char data; /* this data on exit */
/* or DATA_WINOFF to close memory window on entry */
} BoardMemWinState; /* so several channels and even boards can coexist */
#define DATA_WINOFF 0
static BoardMemWinState bmws;
/* return current memory window state and close window */
static BoardMemWinState
bmws_get(void)
{
BoardMemWinState bmwsRet=bmws;
if(bmws.data!=DATA_WINOFF)
outb(bmws.port, bmws.data=DATA_WINOFF);
return bmwsRet;
}
/* restore memory window state */
static void
bmws_set(BoardMemWinState ws)
{
if(ws.data != bmws.data || ws.port!=bmws.port ) {
if(bmws.data!=DATA_WINOFF)
outb(bmws.port,DATA_WINOFF);
if(ws.data!=DATA_WINOFF)
outb(ws.port, ws.data);
bmws=ws;
}
}
static __inline int
setwin(sc,addr)
struct dgb_softc *sc;
unsigned int addr;
{
if(sc->type==PCXEVE) {
outb(bmws.port=sc->port+1, bmws.data=FEPWIN|(addr>>13));
DPRINT3(DB_WIN,"dgb%d: switched to window 0x%x\n",sc->unit,addr>>13);
return (addr & 0x1FFF);
} else {
outb(bmws.port=sc->port,bmws.data=FEPMEM);
return addr;
}
}
static __inline int
setinitwin(sc,addr)
struct dgb_softc *sc;
unsigned int addr;
{
if(sc->type==PCXEVE) {
outb(bmws.port=sc->port+1, bmws.data=FEPWIN|(addr>>13));
DPRINT3(DB_WIN,"dgb%d: switched to window 0x%x\n",sc->unit,addr>>13);
return (addr & 0x1FFF);
} else {
outb(bmws.port=sc->port,bmws.data=inb(sc->port)|FEPMEM);
return addr;
}
}
static __inline void
hidewin(sc)
struct dgb_softc *sc;
{
bmws.data=0;
if(sc->type==PCXEVE)
outb(bmws.port=sc->port+1, bmws.data);
else
outb(bmws.port=sc->port, bmws.data);
}
static __inline void
towin(sc,win)
struct dgb_softc *sc;
int win;
{
if(sc->type==PCXEVE) {
outb(bmws.port=sc->port+1, bmws.data=win);
} else {
outb(bmws.port=sc->port,bmws.data=FEPMEM);
}
}
static int
dgbprobe(dev)
struct isa_device *dev;
{
struct dgb_softc *sc= &dgb_softc[dev->id_unit];
int i, v;
u_long win_size; /* size of vizible memory window */
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=((intptr_t)(void *)dev->id_maddr & 0xFFFFFF);
DPRINT4(DB_INFO,"dgb%d: port 0x%x mem 0x%lx\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(DB_EXCEPT,"dgb%d: got reset after %d us\n",unit,i);
break;
}
}
if(sc->status!=ENABLED) {
DPRINT2(DB_EXCEPT,"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%lx truncated to 0x%lx\n",
dev->id_unit, sc->pmem,
sc->pmem & 0xFFE000);
dev->id_maddr= (u_char *)(void *)(intptr_t)( 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 */
hidewin(sc); /* Helg: to set initial bmws state */
return 4; /* we need I/O space of 4 ports */
}
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 volatile *mem;
u_char volatile *ptr;
int addr;
struct dgb_p *port;
volatile struct board_chan *bc;
int shrinkmem;
int nfails;
volatile ushort *pstat;
int lowwater;
static int nports=0;
char suffix;
if(sc->status!=ENABLED) {
DPRINT2(DB_EXCEPT,"dbg%d: try to attach a disabled card\n",unit);
return 0;
}
mem=sc->vmem;
DPRINT3(DB_INFO,"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(DB_INFO,"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 */
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(DB_INFO,"dgb%d: got memory after %d us\n",unit,i);
}
mem=sc->vmem;
/* very short memory test */
addr=setinitwin(sc,BOTWIN);
*(u_long volatile *)(mem+addr) = 0xA55A3CC3;
if(*(u_long volatile *)(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 volatile *)(mem+addr) = 0x5AA5C33C;
if(*(u_long volatile *)(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 volatile *)(mem+addr) = 0x5AA5C33C;
if(*(u_long volatile *)(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(DB_INFO,"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(DB_EXCEPT,"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(DB_INFO,"dgb%d: reset dropped after %d us\n",unit,i);
for(i=0; i<200000; i++) {
if( *((ushort volatile *)(mem+MISCGLOBAL)) == *((ushort *)"GD") )
goto load_fep;
DELAY(1);
}
printf("dgb%d: BIOS download failed\n",dev->id_unit);
DPRINT4(DB_EXCEPT,"dgb%d: code=0x%x must be 0x%x\n",
dev->id_unit,
*((ushort volatile *)(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(DB_EXCEPT,"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(DB_INFO,"dgb%d: reset dropped after %d us\n",unit,i);
addr=setwin(sc,MISCGLOBAL);
for(i=0; i<200000; i++) {
if(*(ushort volatile *)(mem+addr)== *(ushort *)"GD")
goto load_fep;
DELAY(1);
}
printf("dgb%d: BIOS download failed\n",dev->id_unit);
DPRINT5(DB_EXCEPT,"dgb%d: Error#(0x%x,0x%x) code=0x%x\n",
dev->id_unit,
*(ushort volatile *)(mem+0xC12),
*(ushort volatile *)(mem+0xC14),
*(ushort volatile *)(mem+MISCGLOBAL));
sc->status=DISABLED;
hidewin(sc);
return 0;
}
load_fep:
DPRINT2(DB_INFO,"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 volatile *)(mem+addr+ 0)=2;
*(ushort volatile *)(mem+addr+ 2)=sc->mem_seg+FEPCODESEG;
*(ushort volatile *)(mem+addr+ 4)=0;
*(ushort volatile *)(mem+addr+ 6)=FEPCODESEG;
*(ushort volatile *)(mem+addr+ 8)=0;
*(ushort volatile *)(mem+addr+10)=pcxx_ncook;
outb(sc->port,FEPMEM|FEPINT); /* send interrupt to BIOS */
outb(sc->port,FEPMEM);
for(i=0; *(ushort volatile *)(mem+addr)!=0; i++) {
if(i>200000) {
printf("dgb%d: FEP code download failed\n",unit);
DPRINT3(DB_EXCEPT,"dgb%d: code=0x%x must be 0\n", unit,
*(ushort volatile *)(mem+addr));
sc->status=DISABLED;
hidewin(sc);
return 0;
}
}
DPRINT2(DB_INFO,"dgb%d: FEP code loaded\n",unit);
*(ushort volatile *)(mem+setwin(sc,FEPSTAT))=0;
addr=setwin(sc,MBOX);
*(ushort volatile *)(mem+addr+0)=1;
*(ushort volatile *)(mem+addr+2)=FEPCODESEG;
*(ushort volatile *)(mem+addr+4)=0x4;
outb(sc->port,FEPINT); /* send interrupt to BIOS */
outb(sc->port,FEPCLR);
addr=setwin(sc,FEPSTAT);
for(i=0; *(ushort volatile *)(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(DB_INFO,"dgb%d: FEP/OS started\n",dev->id_unit);
sc->numports= *(ushort volatile *)(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 volatile *)(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=(volatile struct board_chan *)(mem + CHANSTRUCT);
sc->mailbox=(volatile 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(DB_INFO,"dgb%d: shrinking memory\n",unit);
fepcmd(port, SETBUFFER, 32, 0, 0, 0);
shrinkmem=0;
}
if(sc->type!=PCXEVE) {
port->txptr=(u_char *)(uintptr_t)(volatile void *)
(mem+((bc->tseg-sc->mem_seg)<<4));
port->rxptr=(u_char *)(uintptr_t)(volatile void *)
(mem+((bc->rseg-sc->mem_seg)<<4));
port->txwin=port->rxwin=0;
} else {
port->txptr=(u_char *)(uintptr_t)(volatile void *)
(mem+( ((bc->tseg-sc->mem_seg)<<4) & 0x1FFF ));
port->rxptr=(u_char *)(uintptr_t)(volatile void *)
(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);
setwin(sc,0);
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;*/
port->close_delay=3 * hz;
port->do_timestamp=0;
port->do_dcd_timestamp=0;
/*
* 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;
/* MAX_DGB_PORTS is 32 => [0-9a-v] */
suffix = i < 10 ? '0' + i : 'a' + i - 10;
make_dev(&dgb_cdevsw, (unit*32)+i,
UID_ROOT, GID_WHEEL, 0600, "ttyD%d%c", unit, suffix);
make_dev(&dgb_cdevsw, (unit*32)+i+32,
UID_ROOT, GID_WHEEL, 0600, "ttyiD%d%c", unit, suffix);
make_dev(&dgb_cdevsw, (unit*32)+i+64,
UID_ROOT, GID_WHEEL, 0600, "ttylD%d%c", unit, suffix);
make_dev(&dgb_cdevsw, (unit*32)+i+128,
UID_UUCP, GID_DIALER, 0660, "cuaD%d%c", unit, suffix);
make_dev(&dgb_cdevsw, (unit*32)+i+160,
UID_UUCP, GID_DIALER, 0660, "cuaiD%d%c", unit, suffix);
make_dev(&dgb_cdevsw, (unit*32)+i+192,
UID_UUCP, GID_DIALER, 0660, "cualD%d%c", unit, suffix);
}
hidewin(sc);
/* register the polling function */
timeout(dgbpoll, (void *)unit, hz/POLLSPERSEC);
return 1;
}
/* ARGSUSED */
static int
dgbopen(dev, flag, mode, td)
dev_t dev;
int flag;
int mode;
struct thread *td;
{
struct dgb_softc *sc;
struct tty *tp;
int unit;
int mynor;
int pnum;
struct dgb_p *port;
int s,cs;
int error;
volatile struct board_chan *bc;
error=0;
mynor=minor(dev);
unit=MINOR_TO_UNIT(mynor);
pnum=MINOR_TO_PORT(mynor);
if(unit >= NDGB) {
DPRINT2(DB_EXCEPT,"dgb%d: try to open a nonexisting card\n",unit);
return ENXIO;
}
sc=&dgb_softc[unit];
if(sc->status!=ENABLED) {
DPRINT2(DB_EXCEPT,"dgb%d: try to open a disabled card\n",unit);
return ENXIO;
}
if(pnum>=sc->numports) {
DPRINT3(DB_EXCEPT,"dgb%d: try to open non-existing port %d\n",unit,pnum);
return ENXIO;
}
if(mynor & CONTROL_MASK)
return 0;
tp=&sc->ttys[pnum];
dev->si_tty = tp;
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(DB_OPEN,"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(DB_OPEN,"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(DB_OPEN,"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(DB_OPEN,"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 &&
suser(td)) {
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_stop=dgbstop;
tp->t_dev=dev;
tp->t_termios= (mynor & CALLOUT_MASK) ?
port->it_out :
port->it_in;
cs=splclock();
setwin(sc,0);
port->imodem=bc->mstat;
bc->rout=bc->rin; /* clear input queue */
bc->idata=1;
#ifdef PRINT_BUFSIZE
printf("dgb buffers tx=%x:%x rx=%x:%x\n",bc->tseg,bc->tmax,bc->rseg,bc->rmax);
#endif
hidewin(sc);
splx(cs);
port->wopeners++;
error=dgbparam(tp, &tp->t_termios);
port->wopeners--;
if(error!=0) {
DPRINT4(DB_OPEN,"dgb%d: port%d: dgbparam error=%d\n",unit,pnum,error);
goto out;
}
/* 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(DB_OPEN,"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);
disc_optim(tp,&tp->t_termios);
DPRINT4(DB_OPEN,"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;
/* If any port is open (i.e. the open() call is completed for it)
* the device is busy
*/
out:
disc_optim(tp,&tp->t_termios);
splx(s);
if( !(tp->t_state & TS_ISOPEN) && port->wopeners==0 )
dgbhardclose(port);
DPRINT4(DB_OPEN,"dgb%d: port%d: open() returns %d\n",unit,pnum,error);
return error;
}
/*ARGSUSED*/
static int
dgbclose(dev, flag, mode, td)
dev_t dev;
int flag;
int mode;
struct thread *td;
{
int mynor;
struct tty *tp;
int unit, pnum;
struct dgb_softc *sc;
struct dgb_p *port;
int s;
int i;
mynor=minor(dev);
if(mynor & CONTROL_MASK)
return 0;
unit=MINOR_TO_UNIT(mynor);
pnum=MINOR_TO_PORT(mynor);
sc=&dgb_softc[unit];
tp=&sc->ttys[pnum];
port=sc->ports+pnum;
DPRINT3(DB_CLOSE,"dgb%d: port%d: closing\n",unit,pnum);
DPRINT3(DB_CLOSE,"dgb%d: port%d: draining port\n",unit,pnum);
dgb_drain_or_flush(port);
s=spltty();
port->closing=1;
DPRINT3(DB_CLOSE,"dgb%d: port%d: closing line disc\n",unit,pnum);
linesw[tp->t_line].l_close(tp,flag);
disc_optim(tp,&tp->t_termios);
DPRINT3(DB_CLOSE,"dgb%d: port%d: hard closing\n",unit,pnum);
dgbhardclose(port);
DPRINT3(DB_CLOSE,"dgb%d: port%d: closing tty\n",unit,pnum);
ttyclose(tp);
port->closing=0;
wakeup(&port->closing);
port->used=0;
/* mark the card idle when all ports are closed */
for(i=0; i<sc->numports; i++)
if(sc->ports[i].used)
break;
splx(s);
DPRINT3(DB_CLOSE,"dgb%d: port%d: closed\n",unit,pnum);
wakeup(TSA_CARR_ON(tp));
wakeup(&port->active_out);
port->active_out=0;
DPRINT3(DB_CLOSE,"dgb%d: port%d: close exit\n",unit,pnum);
return 0;
}
static void
dgbhardclose(port)
struct dgb_p *port;
{
struct dgb_softc *sc=&dgb_softc[port->unit];
volatile struct board_chan *bc=port->brdchan;
int cs;
cs=splclock();
port->do_timestamp = 0;
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);
splx(cs);
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);
}
static 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;
volatile struct board_chan *bc;
struct tty *tp;
int rhead, rtail;
int whead, wtail;
int size;
u_char *ptr;
int ocount;
int ibuf_full,obuf_full;
BoardMemWinState ws=bmws_get();
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! hd=%d,tl=%d\n", unit,head,tail);
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 ) {
int wrapmask=port->rxbufsize-1;
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(DB_DATA,"dgb%d: port%d: DATA_IND\n",unit,pnum);
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;
}
if(!(tp->t_state & TS_ISOPEN))
goto end_of_data;
for(ibuf_full=FALSE;rhead!=rtail && !ibuf_full;) {
DPRINT5(DB_RXDATA,"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;
/* Helg: */
if( tp->t_rawq.c_cc + size > DGB_IBUFSIZE ) {
size=DGB_IBUFSIZE-tp->t_rawq.c_cc;
DPRINT1(DB_RXDATA,"*");
ibuf_full=TRUE;
}
if(size) {
if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
DPRINT1(DB_RXDATA,"!");
towin(sc,port->rxwin);
tk_nin += size;
tk_rawcc += size;
tp->t_rawcc += size;
b_to_q(ptr,size,&tp->t_rawq);
setwin(sc,0);
} else {
int i=size;
unsigned char chr;
do {
towin(sc,port->rxwin);
chr= *ptr++;
hidewin(sc);
(*linesw[tp->t_line].l_rint)(chr, tp);
} while (--i > 0 );
setwin(sc,0);
}
}
rtail= (rtail + size) & wrapmask;
bc->rout=rtail;
rhead=bc->rin & wrapmask;
hidewin(sc);
ttwakeup(tp);
setwin(sc,0);
}
end_of_data: ;
}
if(event & MODEMCHG_IND) {
DPRINT3(DB_MODEM,"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) {
if((tp->t_state & TS_ISOPEN) && (tp->t_iflag & IGNBRK)) {
DPRINT3(DB_BREAK,"dgb%d: port%d: BREAK_IND\n",unit,pnum);
hidewin(sc);
linesw[tp->t_line].l_rint(TTY_BI, tp);
setwin(sc,0);
}
}
/* Helg: with output flow control */
if(event & (LOWTX_IND | EMPTYTX_IND) ) {
DPRINT3(DB_TXDATA,"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;
} else {
int wrapmask=port->txbufsize-1;
for(obuf_full=FALSE; tp->t_outq.c_cc!=0 && !obuf_full; ) {
int s;
/* add "last-minute" data to write buffer */
if(!(tp->t_state & TS_BUSY)) {
hidewin(sc);
#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);
}
s=spltty();
whead=bc->tin & wrapmask;
wtail=bc->tout & wrapmask;
if(whead<wtail)
size=wtail-whead-1;
else {
size=port->txbufsize-whead;
if(wtail==0)
size--;
}
if(size==0) {
DPRINT5(DB_WR,"dgb: head=%d tail=%d size=%d full=%d\n",
whead,wtail,size,obuf_full);
bc->iempty=1; bc->ilow=1;
obuf_full=TRUE;
splx(s);
break;
}
towin(sc,port->txwin);
ocount=q_to_b(&tp->t_outq, port->txptr+whead, size);
whead+=ocount;
setwin(sc,0);
bc->tin=whead;
bc->tin=whead & wrapmask;
splx(s);
}
if(obuf_full) {
DPRINT1(DB_WR," +BUSY\n");
tp->t_state|=TS_BUSY;
} else {
DPRINT1(DB_WR," -BUSY\n");
hidewin(sc);
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
/* should clear TS_BUSY before ttwwakeup */
if(tp->t_state & TS_BUSY) {
tp->t_state &= ~TS_BUSY;
linesw[tp->t_line].l_start(tp);
ttwwakeup(tp);
}
#else
if(tp->t_state & TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup(TSA_OLOWAT(tp));
}
tp->t_state &= ~TS_BUSY;
#endif
setwin(sc,0);
}
}
}
bc->idata=1; /* require event on incoming data */
} else {
bc=port->brdchan;
DPRINT4(DB_EXCEPT,"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;
}
tail= (tail+4) & (FEP_IMAX-FEP_ISTART-4);
}
sc->mailbox->eout=tail;
bmws_set(ws);
timeout(dgbpoll, unit_c, hz/POLLSPERSEC);
}
static int
dgbioctl(dev, cmd, data, flag, td)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct thread *td;
{
struct dgb_softc *sc;
int unit, pnum;
struct dgb_p *port;
int mynor;
struct tty *tp;
volatile struct board_chan *bc;
int error;
int s,cs;
int tiocm_xxx;
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
u_long oldcmd;
struct termios term;
#endif
BoardMemWinState ws=bmws_get();
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(td);
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 defined(COMPAT_43) || defined(COMPAT_SUNOS)
term = tp->t_termios;
if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
DPRINT6(DB_PARAM,"dgb%d: port%d: dgbioctl-ISNOW c=0x%x i=0x%x l=0x%x\n",unit,pnum,term.c_cflag,term.c_iflag,term.c_lflag);
}
oldcmd = cmd;
error = ttsetcompat(tp, &cmd, data, &term);
if (error != 0)
return (error);
if (cmd != oldcmd)
data = (caddr_t)&term;
#endif
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;
DPRINT6(DB_PARAM,"dgb%d: port%d: dgbioctl-TOSET c=0x%x i=0x%x l=0x%x\n",unit,pnum,dt->c_cflag,dt->c_iflag,dt->c_lflag);
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) {
cs=splclock();
setwin(sc,0);
fepcmd(port, PAUSETX, 0, 0, 0, 0);
bmws_set(ws);
splx(cs);
return 0;
} else if(cmd==TIOCSTART) {
cs=splclock();
setwin(sc,0);
fepcmd(port, RESUMETX, 0, 0, 0, 0);
bmws_set(ws);
splx(cs);
return 0;
}
if(cmd==TIOCSETAW || cmd==TIOCSETAF)
port->mustdrain=1;
error = linesw[tp->t_line].l_ioctl(tp, cmd, data, flag, td);
if (error != ENOIOCTL)
return error;
s = spltty();
error = ttioctl(tp, cmd, data, flag);
disc_optim(tp,&tp->t_termios);
port->mustdrain=0;
if (error != ENOIOCTL) {
splx(s);
if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
DPRINT6(DB_PARAM,"dgb%d: port%d: dgbioctl-RES c=0x%x i=0x%x l=0x%x\n",unit,pnum,tp->t_cflag,tp->t_iflag,tp->t_lflag);
}
return error;
}
switch (cmd) {
case TIOCSBRK:
/* Helg: commented */
/* error=dgbdrain(port);*/
if(error!=0) {
splx(s);
return error;
}
cs=splclock();
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);
splx(cs);
break;
case TIOCCBRK:
/* now it's empty */
break;
case TIOCSDTR:
DPRINT3(DB_MODEM,"dgb%d: port%d: set DTR\n",unit,pnum);
port->omodem |= DTR;
cs=splclock();
setwin(sc,0);
fepcmd(port, SETMODEM, port->omodem, RTS, 0, 1);
if( !(bc->mstat & DTR) ) {
DPRINT3(DB_MODEM,"dgb%d: port%d: DTR is off\n",unit,pnum);
}
hidewin(sc);
splx(cs);
break;
case TIOCCDTR:
DPRINT3(DB_MODEM,"dgb%d: port%d: reset DTR\n",unit,pnum);
port->omodem &= ~DTR;
cs=splclock();
setwin(sc,0);
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
if( bc->mstat & DTR ) {
DPRINT3(DB_MODEM,"dgb%d: port%d: DTR is on\n",unit,pnum);
}
hidewin(sc);
splx(cs);
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;
cs=splclock();
setwin(sc,0);
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
hidewin(sc);
splx(cs);
break;
case TIOCMBIS:
if(*(int *)data & TIOCM_DTR)
port->omodem |=DTR;
if(*(int *)data & TIOCM_RTS)
port->omodem |=RTS;
cs=splclock();
setwin(sc,0);
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
hidewin(sc);
splx(cs);
break;
case TIOCMBIC:
if(*(int *)data & TIOCM_DTR)
port->omodem &=~DTR;
if(*(int *)data & TIOCM_RTS)
port->omodem &=~RTS;
cs=splclock();
setwin(sc,0);
fepcmd(port, SETMODEM, port->omodem, RTS|DTR, 0, 1);
hidewin(sc);
splx(cs);
break;
case TIOCMGET:
setwin(sc,0);
port->imodem=bc->mstat;
hidewin(sc);
tiocm_xxx = TIOCM_LE; /* XXX - always enabled while open */
DPRINT3(DB_MODEM,"dgb%d: port%d: modem stat -- ",unit,pnum);
if (port->imodem & DTR) {
DPRINT1(DB_MODEM,"DTR ");
tiocm_xxx |= TIOCM_DTR;
}
if (port->imodem & RTS) {
DPRINT1(DB_MODEM,"RTS ");
tiocm_xxx |= TIOCM_RTS;
}
if (port->imodem & CTS) {
DPRINT1(DB_MODEM,"CTS ");
tiocm_xxx |= TIOCM_CTS;
}
if (port->imodem & port->dcd) {
DPRINT1(DB_MODEM,"DCD ");
tiocm_xxx |= TIOCM_CD;
}
if (port->imodem & port->dsr) {
DPRINT1(DB_MODEM,"DSR ");
tiocm_xxx |= TIOCM_DSR;
}
if (port->imodem & RI) {
DPRINT1(DB_MODEM,"RI ");
tiocm_xxx |= TIOCM_RI;
}
*(int *)data = tiocm_xxx;
DPRINT1(DB_MODEM,"--\n");
break;
case TIOCMSDTRWAIT:
/* must be root since the wait applies to following logins */
error = suser(td);
if (error != 0) {
splx(s);
return (error);
}
port->close_delay = *(int *)data * hz / 100;
break;
case TIOCMGDTRWAIT:
*(int *)data = port->close_delay * 100 / hz;
break;
case TIOCTIMESTAMP:
port->do_timestamp = TRUE;
*(struct timeval *)data = port->timestamp;
break;
case TIOCDCDTIMESTAMP:
port->do_dcd_timestamp = TRUE;
*(struct timeval *)data = port->dcd_timestamp;
break;
default:
bmws_set(ws);
splx(s);
return ENOTTY;
}
bmws_set(ws);
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 dgb_softc *sc=&dgb_softc[port->unit];
volatile struct board_chan *bc=port->brdchan;
int error;
int head, tail;
BoardMemWinState ws=bmws_get();
setwin(sc,0);
bc->iempty=1;
tail=bc->tout;
head=bc->tin;
while(tail!=head) {
DPRINT5(DB_WR,"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(DB_WR,"dgb%d: port%d: tsleep(dgdrn) error=%d\n",
port->unit,port->pnum,error);
bc->iempty=0;
bmws_set(ws);
return error;
}
tail=bc->tout;
head=bc->tin;
}
DPRINT5(DB_WR,"dgb%d: port%d: drain: head=%d tail=%d\n",
port->unit, port->pnum, head, tail);
bmws_set(ws);
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];
volatile 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(DB_WR,"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(DB_WR,"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;
}
hidewin(sc);
DPRINT5(DB_WR,"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 unit=MINOR_TO_UNIT(minor(tp->t_dev));
int pnum=MINOR_TO_PORT(minor(tp->t_dev));
struct dgb_softc *sc=&dgb_softc[unit];
struct dgb_p *port=&sc->ports[pnum];
volatile struct board_chan *bc=port->brdchan;
int cflag;
int head;
int mval;
int iflag;
int hflow;
int cs;
BoardMemWinState ws=bmws_get();
DPRINT6(DB_PARAM,"dgb%d: port%d: dgbparm c=0x%x i=0x%x l=0x%x\n",unit,pnum,t->c_cflag,t->c_iflag,t->c_lflag);
if(port->mustdrain) {
DPRINT3(DB_PARAM,"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 */) {
DPRINT4(DB_PARAM,"dgb%d: port%d: invalid cflag=0%o\n",unit,pnum,cflag);
return (EINVAL);
}
cs=splclock();
setwin(sc,0);
if(cflag==0) { /* hangup */
DPRINT3(DB_PARAM,"dgb%d: port%d: hangup\n",unit,pnum);
head=bc->rin;
bc->rout=head;
head=bc->tin;
fepcmd(port, STOUT, (unsigned)head, 0, 0, 0);
mval= port->omodem & ~(DTR|RTS);
} else {
cflag |= dgbflags(dgb_cflags, t->c_cflag);
if(cflag!=port->fepcflag) {
port->fepcflag=cflag;
DPRINT5(DB_PARAM,"dgb%d: port%d: set cflag=0x%x c=0x%x\n",
unit,pnum,cflag,t->c_cflag&~CRTSCTS);
fepcmd(port, SETCTRLFLAGS, (unsigned)cflag, 0, 0, 0);
}
mval= port->omodem | (DTR|RTS);
}
iflag=dgbflags(dgb_iflags, t->c_iflag);
if(iflag!=port->fepiflag) {
port->fepiflag=iflag;
DPRINT5(DB_PARAM,"dgb%d: port%d: set iflag=0x%x c=0x%x\n",unit,pnum,iflag,t->c_iflag);
fepcmd(port, SETIFLAGS, (unsigned)iflag, 0, 0, 0);
}
bc->mint=port->dcd;
hflow=dgbflags(dgb_flow, t->c_cflag);
if(hflow!=port->hflow) {
port->hflow=hflow;
DPRINT5(DB_PARAM,"dgb%d: port%d: set hflow=0x%x f=0x%x\n",unit,pnum,hflow,t->c_cflag&CRTSCTS);
fepcmd(port, SETHFLOW, (unsigned)hflow, 0xff, 0, 1);
}
if(port->omodem != mval) {
DPRINT5(DB_PARAM,"dgb%d: port%d: setting modem parameters 0x%x was 0x%x\n",
unit,pnum,mval,port->omodem);
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]) {
DPRINT5(DB_PARAM,"dgb%d: port%d: set startc=%d, stopc=%d\n",unit,pnum,t->c_cc[VSTART],t->c_cc[VSTOP]);
port->fepstartc=t->c_cc[VSTART];
port->fepstopc=t->c_cc[VSTOP];
fepcmd(port, SONOFFC, port->fepstartc, port->fepstopc, 0, 1);
}
bmws_set(ws);
splx(cs);
return 0;
}
static void
dgbstart(tp)
struct tty *tp;
{
int unit;
int pnum;
struct dgb_p *port;
struct dgb_softc *sc;
volatile struct board_chan *bc;
int head, tail;
int size, ocount;
int s;
int wmask;
BoardMemWinState ws=bmws_get();
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 ) {
int cs;
#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
cs=splclock();
setwin(sc,0);
head=bc->tin & wmask;
do { tail=bc->tout; } while (tail != bc->tout);
tail=bc->tout & wmask;
DPRINT5(DB_WR,"dgb%d: port%d: s tx head=%d tail=%d\n",unit,pnum,head,tail);
#ifdef LEAVE_FREE_CHARS
if(tail>head) {
size=tail-head-LEAVE_FREE_CHARS;
if (size <0)
size=0;
else {
size=port->txbufsize-head;
if(tail+port->txbufsize < head)
size=0;
}
}
#else
if(tail>head)
size=tail-head-1;
else {
size=port->txbufsize-head/*-1*/;
if(tail==0)
size--;
}
#endif
if(size==0) {
bc->iempty=1; bc->ilow=1;
splx(cs);
bmws_set(ws);
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;
if(head>=port->txbufsize)
head-=port->txbufsize;
setwin(sc,0);
bc->tin=head;
DPRINT5(DB_WR,"dgb%d: port%d: tx avail=%d count=%d\n",unit,pnum,size,ocount);
hidewin(sc);
splx(cs);
}
bmws_set(ws);
splx(s);
#ifndef TS_ASLEEP /* post 2.0.5 FreeBSD */
if(tp->t_state & TS_BUSY) {
tp->t_state&=~TS_BUSY;
linesw[tp->t_line].l_start(tp);
ttwwakeup(tp);
}
#else
if(tp->t_state & TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup(TSA_OLOWAT(tp));
}
tp->t_state&=~TS_BUSY;
#endif
}
void
dgbstop(tp, rw)
struct tty *tp;
int rw;
{
int unit;
int pnum;
struct dgb_p *port;
struct dgb_softc *sc;
volatile struct board_chan *bc;
int s;
BoardMemWinState ws=bmws_get();
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;
DPRINT3(DB_WR,"dgb%d: port%d: stop\n",port->unit, port->pnum);
s = spltty();
setwin(sc,0);
if (rw & FWRITE) {
/* clear output queue */
bc->tout=bc->tin=0;
bc->ilow=0;bc->iempty=0;
}
if (rw & FREAD) {
/* clear input queue */
bc->rout=bc->rin;
bc->idata=1;
}
hidewin(sc);
bmws_set(ws);
splx(s);
dgbstart(tp);
}
static void
fepcmd(port, cmd, op1, op2, ncmds, bytecmd)
struct dgb_p *port;
unsigned 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: port%d: FEP command on disabled port\n",
port->unit, port->pnum);
return;
}
/* setwin(sc,0); Require this to be set by caller */
head=sc->mailbox->cin;
if(head>=(FEP_CMAX-FEP_CSTART) || (head & 3)) {
printf("dgb%d: port%d: wrong pointer head of command queue : 0x%x\n",
port->unit, port->pnum, head);
return;
}
mem[head+FEP_CSTART+0]=cmd;
mem[head+FEP_CSTART+1]=port->pnum;
if(bytecmd) {
mem[head+FEP_CSTART+2]=op1;
mem[head+FEP_CSTART+3]=op2;
} else {
mem[head+FEP_CSTART+2]=op1&0xff;
mem[head+FEP_CSTART+3]=(op1>>8)&0xff;
}
DPRINT7(DB_FEP,"dgb%d: port%d: %s cmd=0x%x op1=0x%x op2=0x%x\n", port->unit, port->pnum,
(bytecmd)?"byte":"word", cmd, mem[head+FEP_CSTART+2], mem[head+FEP_CSTART+3]);
head=(head+4) & (FEP_CMAX-FEP_CSTART-4);
sc->mailbox->cin=head;
count=FEPTIMEOUT;
while (count-- != 0) {
head=sc->mailbox->cin;
tail=sc->mailbox->cout;
n = (head-tail) & (FEP_CMAX-FEP_CSTART-4);
if(n <= ncmds * (sizeof(ushort)*4))
return;
}
printf("dgb%d(%d): timeout on FEP cmd=0x%x\n", port->unit, port->pnum, cmd);
}
static void
disc_optim(tp, t)
struct tty *tp;
struct termios *t;
{
if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
&& (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
&& (!(t->c_iflag & PARMRK)
|| (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
&& !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
&& linesw[tp->t_line].l_rint == ttyinput)
tp->t_state |= TS_CAN_BYPASS_L_RINT;
else
tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
}
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