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freebsd-dev/sys/dev/digi/digi.c

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/*-
* Copyright (c) 2001 Brian Somers <brian@Awfulhak.org>
* based on work by Slawa Olhovchenkov
* John Prince <johnp@knight-trosoft.com>
* Eric Hernes
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 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.
*
* $FreeBSD$
*/
/*-
* TODO:
* Figure out what the con bios stuff is supposed to do
* Test with *LOTS* more cards - I only have a PCI8r and an ISA Xem.
*/
#include "opt_compat.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/linker.h>
#include <sys/kernel.h>
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/tty.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/bus.h>
#include <sys/bus.h>
#include <machine/resource.h>
#include <sys/digiio.h>
#include <dev/digi/digireg.h>
#include <dev/digi/digi.h>
#include <dev/digi/digi_mod.h>
#include <dev/digi/digi_pci.h>
#define CTRL_DEV 0x800000
#define CALLOUT_MASK 0x400000
#define CONTROL_INIT_STATE 0x100000
#define CONTROL_LOCK_STATE 0x200000
#define CONTROL_MASK (CTRL_DEV|CONTROL_INIT_STATE|CONTROL_LOCK_STATE)
#define UNIT_MASK 0x030000
#define PORT_MASK 0x0000FF
#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)
static d_open_t digiopen;
static d_close_t digiclose;
static d_read_t digiread;
static d_write_t digiwrite;
static d_ioctl_t digiioctl;
static void digistop(struct tty *tp, int rw);
static int digimctl(struct digi_p *port, int bits, int how);
static void digi_poll(void *ptr);
static void digi_freemoduledata(struct digi_softc *);
static void fepcmd(struct digi_p *port, int cmd, int op, int ncmds);
static void digistart(struct tty *tp);
static int digiparam(struct tty *tp, struct termios *t);
static void digihardclose(struct digi_p *port);
static void digi_intr(void *);
static int digi_init(struct digi_softc *_sc);
static int digi_loadmoduledata(struct digi_softc *);
static int digi_inuse(struct digi_softc *);
static void digi_free_state(struct digi_softc *);
#define fepcmd_b(port, cmd, op1, op2, ncmds) \
fepcmd(port, cmd, (op2 << 8) | op1, ncmds)
#define fepcmd_w fepcmd
static speed_t digidefaultrate = TTYDEF_SPEED;
struct con_bios {
struct con_bios *next;
u_char *bios;
size_t size;
};
static struct con_bios *con_bios_list;
devclass_t digi_devclass;
static char driver_name[] = "digi";
unsigned digi_debug = 0;
static struct speedtab digispeedtab[] = {
{ 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)},
{ 76800, (02000 | 2)},
{ 115200, (02000 | 3)},
{ 230400, (02000 | 6)},
{ -1, -1}
};
const struct digi_control_signals digi_xixe_signals = {
0x02, 0x08, 0x10, 0x20, 0x40, 0x80
};
const struct digi_control_signals digi_normal_signals = {
0x02, 0x80, 0x20, 0x10, 0x40, 0x01
};
static struct cdevsw digi_sw = {
.d_version = D_VERSION,
.d_open = digiopen,
.d_close = digiclose,
.d_read = digiread,
.d_write = digiwrite,
.d_ioctl = digiioctl,
.d_name = driver_name,
.d_flags = D_TTY | D_NEEDGIANT,
};
static void
digi_poll(void *ptr)
{
struct digi_softc *sc;
sc = (struct digi_softc *)ptr;
callout_handle_init(&sc->callout);
digi_intr(sc);
sc->callout = timeout(digi_poll, sc, (hz >= 200) ? hz / 100 : 1);
}
static void
digi_int_test(void *v)
{
struct digi_softc *sc = v;
callout_handle_init(&sc->inttest);
#ifdef DIGI_INTERRUPT
if (sc->intr_timestamp.tv_sec || sc->intr_timestamp.tv_usec) {
/* interrupt OK! */
return;
}
log(LOG_ERR, "digi%d: Interrupt didn't work, use polled mode\n", unit);
#endif
sc->callout = timeout(digi_poll, sc, (hz >= 200) ? hz / 100 : 1);
}
static void
digi_freemoduledata(struct digi_softc *sc)
{
if (sc->fep.data != NULL) {
free(sc->fep.data, M_TTYS);
sc->fep.data = NULL;
}
if (sc->link.data != NULL) {
free(sc->link.data, M_TTYS);
sc->link.data = NULL;
}
if (sc->bios.data != NULL) {
free(sc->bios.data, M_TTYS);
sc->bios.data = NULL;
}
}
static int
digi_bcopy(const void *vfrom, void *vto, size_t sz)
{
volatile const char *from = (volatile const char *)vfrom;
volatile char *to = (volatile char *)vto;
size_t i;
for (i = 0; i < sz; i++)
*to++ = *from++;
from = (const volatile char *)vfrom;
to = (volatile char *)vto;
for (i = 0; i < sz; i++)
if (*to++ != *from++)
return (0);
return (1);
}
void
digi_delay(struct digi_softc *sc, const char *txt, u_long timo)
{
if (cold)
DELAY(timo * 1000000 / hz);
else
tsleep(sc, PUSER | PCATCH, txt, timo);
}
static int
digi_init(struct digi_softc *sc)
{
int i, cnt, resp;
u_char *ptr;
int lowwater;
struct digi_p *port;
volatile struct board_chan *bc;
ptr = NULL;
if (sc->status == DIGI_STATUS_DISABLED) {
log(LOG_ERR, "digi%d: Cannot init a disabled card\n",
sc->res.unit);
return (EIO);
}
if (sc->bios.data == NULL) {
log(LOG_ERR, "digi%d: Cannot init without BIOS\n",
sc->res.unit);
return (EIO);
}
#if 0
if (sc->link.data == NULL && sc->model >= PCCX) {
log(LOG_ERR, "digi%d: Cannot init without link info\n",
sc->res.unit);
return (EIO);
}
#endif
if (sc->fep.data == NULL) {
log(LOG_ERR, "digi%d: Cannot init without fep code\n",
sc->res.unit);
return (EIO);
}
sc->status = DIGI_STATUS_NOTINIT;
if (sc->numports) {
/*
* We're re-initialising - maybe because someone's attached
* another port module. For now, we just re-initialise
* everything.
*/
if (digi_inuse(sc))
return (EBUSY);
digi_free_state(sc);
}
ptr = sc->setwin(sc, MISCGLOBAL);
for (i = 0; i < 16; i += 2)
vW(ptr + i) = 0;
switch (sc->model) {
case PCXEVE:
outb(sc->wport, 0xff); /* window 7 */
ptr = sc->vmem + (BIOSCODE & 0x1fff);
if (!digi_bcopy(sc->bios.data, ptr, sc->bios.size)) {
device_printf(sc->dev, "BIOS upload failed\n");
return (EIO);
}
outb(sc->port, FEPCLR);
break;
case PCXE:
case PCXI:
case PCCX:
ptr = sc->setwin(sc, BIOSCODE + ((0xf000 - sc->mem_seg) << 4));
if (!digi_bcopy(sc->bios.data, ptr, sc->bios.size)) {
device_printf(sc->dev, "BIOS upload failed\n");
return (EIO);
}
break;
case PCXEM:
case PCIEPCX:
case PCIXR:
if (sc->pcibus)
PCIPORT = FEPRST;
else
outb(sc->port, FEPRST | FEPMEM);
for (i = 0; ((sc->pcibus ? PCIPORT : inb(sc->port)) &
FEPMASK) != FEPRST; i++) {
if (i > hz) {
log(LOG_ERR, "digi%d: %s init reset failed\n",
sc->res.unit, sc->name);
return (EIO);
}
digi_delay(sc, "digiinit0", 5);
}
DLOG(DIGIDB_INIT, (sc->dev, "Got init reset after %d us\n", i));
/* Now upload the BIOS */
cnt = (sc->bios.size < sc->win_size - BIOSOFFSET) ?
sc->bios.size : sc->win_size - BIOSOFFSET;
ptr = sc->setwin(sc, BIOSOFFSET);
if (!digi_bcopy(sc->bios.data, ptr, cnt)) {
device_printf(sc->dev, "BIOS upload (1) failed\n");
return (EIO);
}
if (cnt != sc->bios.size) {
/* and the second part */
ptr = sc->setwin(sc, sc->win_size);
if (!digi_bcopy(sc->bios.data + cnt, ptr,
sc->bios.size - cnt)) {
device_printf(sc->dev, "BIOS upload failed\n");
return (EIO);
}
}
ptr = sc->setwin(sc, 0);
vW(ptr + 0) = 0x0401;
vW(ptr + 2) = 0x0bf0;
vW(ptr + 4) = 0x0000;
vW(ptr + 6) = 0x0000;
break;
}
DLOG(DIGIDB_INIT, (sc->dev, "BIOS uploaded\n"));
ptr = sc->setwin(sc, MISCGLOBAL);
W(ptr) = 0;
if (sc->pcibus) {
PCIPORT = FEPCLR;
resp = FEPRST;
} else if (sc->model == PCXEVE) {
outb(sc->port, FEPCLR);
resp = FEPRST;
} else {
outb(sc->port, FEPCLR | FEPMEM);
resp = FEPRST | FEPMEM;
}
for (i = 0; ((sc->pcibus ? PCIPORT : inb(sc->port)) & FEPMASK)
== resp; i++) {
if (i > hz) {
log(LOG_ERR, "digi%d: BIOS start failed\n",
sc->res.unit);
return (EIO);
}
digi_delay(sc, "digibios0", 5);
}
DLOG(DIGIDB_INIT, (sc->dev, "BIOS started after %d us\n", i));
for (i = 0; vW(ptr) != *(u_short *)"GD"; i++) {
if (i > 2*hz) {
log(LOG_ERR, "digi%d: BIOS boot failed "
"(0x%02x != 0x%02x)\n",
sc->res.unit, vW(ptr), *(u_short *)"GD");
return (EIO);
}
digi_delay(sc, "digibios1", 5);
}
DLOG(DIGIDB_INIT, (sc->dev, "BIOS booted after %d iterations\n", i));
if (sc->link.data != NULL) {
DLOG(DIGIDB_INIT, (sc->dev, "Loading link data\n"));
ptr = sc->setwin(sc, 0xcd0);
digi_bcopy(sc->link.data, ptr, 21); /* XXX 21 ? */
}
/* load FEP/OS */
switch (sc->model) {
case PCXE:
case PCXEVE:
case PCXI:
ptr = sc->setwin(sc, sc->model == PCXI ? 0x2000 : 0x0);
digi_bcopy(sc->fep.data, ptr, sc->fep.size);
/* A BIOS request to move our data to 0x2000 */
ptr = sc->setwin(sc, MBOX);
vW(ptr + 0) = 2;
vW(ptr + 2) = sc->mem_seg + FEPCODESEG;
vW(ptr + 4) = 0;
vW(ptr + 6) = FEPCODESEG;
vW(ptr + 8) = 0;
vW(ptr + 10) = sc->fep.size;
/* Run the BIOS request */
outb(sc->port, FEPREQ | FEPMEM);
outb(sc->port, FEPCLR | FEPMEM);
for (i = 0; W(ptr); i++) {
if (i > hz) {
log(LOG_ERR, "digi%d: FEP/OS move failed\n",
sc->res.unit);
sc->hidewin(sc);
return (EIO);
}
digi_delay(sc, "digifep0", 5);
}
DLOG(DIGIDB_INIT,
(sc->dev, "FEP/OS moved after %d iterations\n", i));
/* Clear the confirm word */
ptr = sc->setwin(sc, FEPSTAT);
vW(ptr + 0) = 0;
/* A BIOS request to execute the FEP/OS */
ptr = sc->setwin(sc, MBOX);
vW(ptr + 0) = 0x01;
vW(ptr + 2) = FEPCODESEG;
vW(ptr + 4) = 0x04;
/* Run the BIOS request */
outb(sc->port, FEPREQ);
outb(sc->port, FEPCLR);
ptr = sc->setwin(sc, FEPSTAT);
break;
case PCXEM:
case PCIEPCX:
case PCIXR:
DLOG(DIGIDB_INIT, (sc->dev, "Loading FEP/OS\n"));
cnt = (sc->fep.size < sc->win_size - BIOSOFFSET) ?
sc->fep.size : sc->win_size - BIOSOFFSET;
ptr = sc->setwin(sc, BIOSOFFSET);
digi_bcopy(sc->fep.data, ptr, cnt);
if (cnt != sc->fep.size) {
ptr = sc->setwin(sc, BIOSOFFSET + cnt);
digi_bcopy(sc->fep.data + cnt, ptr,
sc->fep.size - cnt);
}
DLOG(DIGIDB_INIT, (sc->dev, "FEP/OS loaded\n"));
ptr = sc->setwin(sc, 0xc30);
W(ptr + 4) = 0x1004;
W(ptr + 6) = 0xbfc0;
W(ptr + 0) = 0x03;
W(ptr + 2) = 0x00;
/* Clear the confirm word */
ptr = sc->setwin(sc, FEPSTAT);
W(ptr + 0) = 0;
if (sc->port)
outb(sc->port, 0); /* XXX necessary ? */
break;
case PCCX:
ptr = sc->setwin(sc, 0xd000);
digi_bcopy(sc->fep.data, ptr, sc->fep.size);
/* A BIOS request to execute the FEP/OS */
ptr = sc->setwin(sc, 0xc40);
W(ptr + 0) = 1;
W(ptr + 2) = FEPCODE >> 4;
W(ptr + 4) = 4;
/* Clear the confirm word */
ptr = sc->setwin(sc, FEPSTAT);
W(ptr + 0) = 0;
/* Run the BIOS request */
outb(sc->port, FEPREQ | FEPMEM); /* send interrupt to BIOS */
outb(sc->port, FEPCLR | FEPMEM);
break;
}
/* Now wait 'till the FEP/OS has booted */
for (i = 0; vW(ptr) != *(u_short *)"OS"; i++) {
if (i > 2*hz) {
log(LOG_ERR, "digi%d: FEP/OS start failed "
"(0x%02x != 0x%02x)\n",
sc->res.unit, vW(ptr), *(u_short *)"OS");
sc->hidewin(sc);
return (EIO);
}
digi_delay(sc, "digifep1", 5);
}
DLOG(DIGIDB_INIT, (sc->dev, "FEP/OS started after %d iterations\n", i));
if (sc->model >= PCXEM) {
ptr = sc->setwin(sc, 0xe04);
vW(ptr) = 2;
ptr = sc->setwin(sc, 0xc02);
sc->numports = vW(ptr);
} else {
ptr = sc->setwin(sc, 0xc22);
sc->numports = vW(ptr);
}
if (sc->numports == 0) {
device_printf(sc->dev, "%s, 0 ports found\n", sc->name);
sc->hidewin(sc);
return (0);
}
if (sc->numports > 256) {
/* Our minor numbering scheme is broken for more than 256 */
device_printf(sc->dev, "%s, 256 ports (%d ports found)\n",
sc->name, sc->numports);
sc->numports = 256;
} else
device_printf(sc->dev, "%s, %d ports found\n", sc->name,
sc->numports);
if (sc->ports)
free(sc->ports, M_TTYS);
sc->ports = malloc(sizeof(struct digi_p) * sc->numports,
M_TTYS, M_WAITOK | M_ZERO);
if (sc->ttys)
free(sc->ttys, M_TTYS);
sc->ttys = malloc(sizeof(struct tty) * sc->numports,
M_TTYS, M_WAITOK | M_ZERO);
/*
* XXX Should read port 0xc90 for an array of 2byte values, 1 per
* port. If the value is 0, the port is broken....
*/
ptr = sc->setwin(sc, 0);
/* We should now init per-port structures */
bc = (volatile struct board_chan *)(ptr + CHANSTRUCT);
sc->gdata = (volatile struct global_data *)(ptr + FEP_GLOBAL);
sc->memcmd = ptr + sc->gdata->cstart;
sc->memevent = ptr + sc->gdata->istart;
for (i = 0; i < sc->numports; i++, bc++) {
port = sc->ports + i;
port->pnum = i;
port->sc = sc;
port->status = ENABLED;
port->tp = sc->ttys + i;
port->bc = bc;
if (sc->model == PCXEVE) {
port->txbuf = ptr +
(((bc->tseg - sc->mem_seg) << 4) & 0x1fff);
port->rxbuf = ptr +
(((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);
} else if (sc->model == PCXI || sc->model == PCXE) {
port->txbuf = ptr + ((bc->tseg - sc->mem_seg) << 4);
port->rxbuf = ptr + ((bc->rseg - sc->mem_seg) << 4);
port->txwin = port->rxwin = 0;
} else {
port->txbuf = ptr +
(((bc->tseg - sc->mem_seg) << 4) % sc->win_size);
port->rxbuf = ptr +
(((bc->rseg - sc->mem_seg) << 4) % sc->win_size);
port->txwin = FEPWIN |
(((bc->tseg - sc->mem_seg) << 4) / sc->win_size);
port->rxwin = FEPWIN |
(((bc->rseg - sc->mem_seg) << 4) / sc->win_size);
}
port->txbufsize = bc->tmax + 1;
port->rxbufsize = bc->rmax + 1;
lowwater = port->txbufsize >> 2;
if (lowwater > 1024)
lowwater = 1024;
sc->setwin(sc, 0);
fepcmd_w(port, STXLWATER, lowwater, 10);
fepcmd_w(port, SRXLWATER, port->rxbufsize >> 2, 10);
fepcmd_w(port, SRXHWATER, (3 * port->rxbufsize) >> 2, 10);
bc->edelay = 100;
port->dtr_wait = 3 * hz;
/*
* 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 = 0;
port->it_in.c_oflag = 0;
port->it_in.c_cflag = TTYDEF_CFLAG;
port->it_in.c_lflag = 0;
termioschars(&port->it_in);
port->it_in.c_ispeed = port->it_in.c_ospeed = digidefaultrate;
port->it_out = port->it_in;
port->send_ring = 1; /* Default action on signal RI */
port->dev[0] = make_dev(&digi_sw, (sc->res.unit << 16) + i,
UID_ROOT, GID_WHEEL, 0600, "ttyD%d.%d", sc->res.unit, i);
port->dev[1] = make_dev(&digi_sw, ((sc->res.unit << 16) + i) |
CONTROL_INIT_STATE, UID_ROOT, GID_WHEEL,
0600, "ttyiD%d.%d", sc->res.unit, i);
port->dev[2] = make_dev(&digi_sw, ((sc->res.unit << 16) + i) |
CONTROL_LOCK_STATE, UID_ROOT, GID_WHEEL,
0600, "ttylD%d.%d", sc->res.unit, i);
port->dev[3] = make_dev(&digi_sw, ((sc->res.unit << 16) + i) |
CALLOUT_MASK, UID_UUCP, GID_DIALER,
0660, "cuaD%d.%d", sc->res.unit, i);
port->dev[4] = make_dev(&digi_sw, ((sc->res.unit << 16) + i) |
CALLOUT_MASK | CONTROL_INIT_STATE, UID_UUCP, GID_DIALER,
0660, "cuaiD%d.%d", sc->res.unit, i);
port->dev[5] = make_dev(&digi_sw, ((sc->res.unit << 16) + i) |
CALLOUT_MASK | CONTROL_LOCK_STATE, UID_UUCP, GID_DIALER,
0660, "cualD%d.%d", sc->res.unit, i);
}
sc->hidewin(sc);
sc->inttest = timeout(digi_int_test, sc, hz);
/* fepcmd_w(&sc->ports[0], 0xff, 0, 0); */
sc->status = DIGI_STATUS_ENABLED;
return (0);
}
static int
digimctl(struct digi_p *port, int bits, int how)
{
int mstat;
if (how == DMGET) {
port->sc->setwin(port->sc, 0);
mstat = port->bc->mstat;
port->sc->hidewin(port->sc);
bits = TIOCM_LE;
if (mstat & port->sc->csigs->rts)
bits |= TIOCM_RTS;
if (mstat & port->cd)
bits |= TIOCM_CD;
if (mstat & port->dsr)
bits |= TIOCM_DSR;
if (mstat & port->sc->csigs->cts)
bits |= TIOCM_CTS;
if (mstat & port->sc->csigs->ri)
bits |= TIOCM_RI;
if (mstat & port->sc->csigs->dtr)
bits |= TIOCM_DTR;
return (bits);
}
/* Only DTR and RTS may be set */
mstat = 0;
if (bits & TIOCM_DTR)
mstat |= port->sc->csigs->dtr;
if (bits & TIOCM_RTS)
mstat |= port->sc->csigs->rts;
switch (how) {
case DMSET:
fepcmd_b(port, SETMODEM, mstat, ~mstat, 0);
break;
case DMBIS:
fepcmd_b(port, SETMODEM, mstat, 0, 0);
break;
case DMBIC:
fepcmd_b(port, SETMODEM, 0, mstat, 0);
break;
}
return (0);
}
static int
digiopen(struct cdev *dev, int flag, int mode, struct thread *td)
{
struct digi_softc *sc;
struct tty *tp;
int unit;
int pnum;
struct digi_p *port;
int s;
int error, mynor;
volatile struct board_chan *bc;
error = 0;
mynor = minor(dev);
unit = MINOR_TO_UNIT(minor(dev));
pnum = MINOR_TO_PORT(minor(dev));
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
if (!sc)
return (ENXIO);
if (sc->status != DIGI_STATUS_ENABLED) {
DLOG(DIGIDB_OPEN, (sc->dev, "Cannot open a disabled card\n"));
return (ENXIO);
}
if (pnum >= sc->numports) {
DLOG(DIGIDB_OPEN, (sc->dev, "port%d: Doesn't exist\n", pnum));
return (ENXIO);
}
if (mynor & (CTRL_DEV | CONTROL_MASK)) {
sc->opencnt++;
return (0);
}
port = &sc->ports[pnum];
tp = dev->si_tty = port->tp;
bc = port->bc;
s = spltty();
open_top:
while (port->status & DIGI_DTR_OFF) {
port->wopeners++;
error = tsleep(&port->dtr_wait, TTIPRI | PCATCH, "digidtr", 0);
port->wopeners--;
if (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;
DLOG(DIGIDB_OPEN, (sc->dev, "port %d:"
" BUSY error = %d\n", pnum, error));
goto out;
}
} else if (port->active_out) {
if (flag & O_NONBLOCK) {
error = EBUSY;
DLOG(DIGIDB_OPEN, (sc->dev,
"port %d: BUSY error = %d\n", pnum, error));
goto out;
}
port->wopeners++;
error = tsleep(&port->active_out, TTIPRI | PCATCH,
"digibi", 0);
port->wopeners--;
if (error != 0) {
DLOG(DIGIDB_OPEN, (sc->dev,
"port %d: tsleep(digibi) error = %d\n",
pnum, error));
goto out;
}
goto open_top;
}
if (tp->t_state & TS_XCLUDE && suser(td) != 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 = digistart;
tp->t_param = digiparam;
tp->t_stop = digistop;
tp->t_dev = dev;
tp->t_termios = (mynor & CALLOUT_MASK) ?
port->it_out : port->it_in;
sc->setwin(sc, 0);
bc->rout = bc->rin; /* clear input queue */
bc->idata = 1;
bc->iempty = 1;
bc->ilow = 1;
bc->mint = port->cd | port->sc->csigs->ri;
bc->tin = bc->tout;
if (port->ialtpin) {
port->cd = sc->csigs->dsr;
port->dsr = sc->csigs->cd;
} else {
port->cd = sc->csigs->cd;
port->dsr = sc->csigs->dsr;
}
port->wopeners++; /* XXX required ? */
error = digiparam(tp, &tp->t_termios);
port->wopeners--;
if (error != 0) {
DLOG(DIGIDB_OPEN, (sc->dev,
"port %d: cxpparam error = %d\n", pnum, error));
goto out;
}
ttsetwater(tp);
/* handle fake and initial DCD for callout devices */
if (bc->mstat & port->cd || mynor & CALLOUT_MASK)
ttyld_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, "digidcd", 0);
port->wopeners--;
if (error != 0) {
DLOG(DIGIDB_OPEN, (sc->dev,
"port %d: tsleep(digidcd) error = %d\n",
pnum, error));
goto out;
}
goto open_top;
}
error = ttyld_open(tp, dev);
DLOG(DIGIDB_OPEN, (sc->dev, "port %d: l_open error = %d\n",
pnum, error));
ttyldoptim(tp);
if (tp->t_state & TS_ISOPEN && mynor & CALLOUT_MASK)
port->active_out = TRUE;
if (tp->t_state & TS_ISOPEN)
sc->opencnt++;
out:
splx(s);
if (!(tp->t_state & TS_ISOPEN))
digihardclose(port);
DLOG(DIGIDB_OPEN, (sc->dev, "port %d: open() returns %d\n",
pnum, error));
return (error);
}
static int
digiclose(struct cdev *dev, int flag, int mode, struct thread *td)
{
int mynor;
struct tty *tp;
int unit, pnum;
struct digi_softc *sc;
struct digi_p *port;
int s;
mynor = minor(dev);
unit = MINOR_TO_UNIT(mynor);
pnum = MINOR_TO_PORT(mynor);
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digiclose\n", unit));
if (mynor & (CTRL_DEV | CONTROL_MASK)) {
sc->opencnt--;
return (0);
}
port = sc->ports + pnum;
tp = port->tp;
DLOG(DIGIDB_CLOSE, (sc->dev, "port %d: closing\n", pnum));
s = spltty();
ttyld_close(tp, flag);
ttyldoptim(tp);
digihardclose(port);
ttyclose(tp);
if (--sc->opencnt == 0)
splx(s);
return (0);
}
static void
digidtrwakeup(void *chan)
{
struct digi_p *port = chan;
port->status &= ~DIGI_DTR_OFF;
wakeup(&port->dtr_wait);
port->wopeners--;
}
static void
digihardclose(struct digi_p *port)
{
volatile struct board_chan *bc;
int s;
bc = port->bc;
s = spltty();
port->sc->setwin(port->sc, 0);
bc->idata = 0;
bc->iempty = 0;
bc->ilow = 0;
bc->mint = 0;
if ((port->tp->t_cflag & HUPCL) ||
(!port->active_out && !(bc->mstat & port->cd) &&
!(port->it_in.c_cflag & CLOCAL)) ||
!(port->tp->t_state & TS_ISOPEN)) {
digimctl(port, TIOCM_DTR | TIOCM_RTS, DMBIC);
if (port->dtr_wait != 0) {
/* Schedule a wakeup of any callin devices */
port->wopeners++;
timeout(&digidtrwakeup, port, port->dtr_wait);
port->status |= DIGI_DTR_OFF;
}
}
port->active_out = FALSE;
wakeup(&port->active_out);
wakeup(TSA_CARR_ON(port->tp));
splx(s);
}
static int
digiread(struct cdev *dev, struct uio *uio, int flag)
{
int mynor;
struct tty *tp;
int error, unit, pnum;
struct digi_softc *sc;
mynor = minor(dev);
if (mynor & CONTROL_MASK)
return (ENODEV);
unit = MINOR_TO_UNIT(mynor);
pnum = MINOR_TO_PORT(mynor);
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digiclose\n", unit));
tp = &sc->ttys[pnum];
error = ttyld_read(tp, uio, flag);
DLOG(DIGIDB_READ, (sc->dev, "port %d: read() returns %d\n",
pnum, error));
return (error);
}
static int
digiwrite(struct cdev *dev, struct uio *uio, int flag)
{
int mynor;
struct tty *tp;
int error, unit, pnum;
struct digi_softc *sc;
mynor = minor(dev);
if (mynor & CONTROL_MASK)
return (ENODEV);
unit = MINOR_TO_UNIT(mynor);
pnum = MINOR_TO_PORT(mynor);
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digiclose\n", unit));
tp = &sc->ttys[pnum];
error = ttyld_write(tp, uio, flag);
DLOG(DIGIDB_WRITE, (sc->dev, "port %d: write() returns %d\n",
pnum, error));
return (error);
}
/*
* Load module "digi_<mod>.ko" and look for a symbol called digi_mod_<mod>.
*
* Populate sc->bios, sc->fep, and sc->link from this data.
*
* sc->fep.data, sc->bios.data and sc->link.data are malloc()d according
* to their respective sizes.
*
* The module is unloaded when we're done.
*/
static int
digi_loadmoduledata(struct digi_softc *sc)
{
struct digi_mod *digi_mod;
linker_file_t lf;
char *modfile, *sym;
caddr_t symptr;
int modlen, res;
KASSERT(sc->bios.data == NULL, ("Uninitialised BIOS variable"));
KASSERT(sc->fep.data == NULL, ("Uninitialised FEP variable"));
KASSERT(sc->link.data == NULL, ("Uninitialised LINK variable"));
KASSERT(sc->module != NULL, ("Uninitialised module name"));
modlen = strlen(sc->module);
modfile = malloc(modlen + 6, M_TEMP, M_WAITOK);
snprintf(modfile, modlen + 6, "digi_%s", sc->module);
if ((res = linker_reference_module(modfile, NULL, &lf)) != 0) {
if (res == ENOENT && rootdev == NULL)
printf("%s: Failed to autoload module: No filesystem\n",
modfile);
else
printf("%s: Failed %d to autoload module\n", modfile,
res);
}
free(modfile, M_TEMP);
if (res != 0)
return (res);
sym = malloc(modlen + 10, M_TEMP, M_WAITOK);
snprintf(sym, modlen + 10, "digi_mod_%s", sc->module);
if ((symptr = linker_file_lookup_symbol(lf, sym, 0)) == NULL)
printf("digi_%s.ko: Symbol `%s' not found\n", sc->module, sym);
free(sym, M_TEMP);
digi_mod = (struct digi_mod *)symptr;
if (digi_mod->dm_version != DIGI_MOD_VERSION) {
printf("digi_%s.ko: Invalid version %d (need %d)\n",
sc->module, digi_mod->dm_version, DIGI_MOD_VERSION);
linker_file_unload(lf);
return (EINVAL);
}
sc->bios.size = digi_mod->dm_bios.size;
if (sc->bios.size != 0 && digi_mod->dm_bios.data != NULL) {
sc->bios.data = malloc(sc->bios.size, M_TTYS, M_WAITOK);
bcopy(digi_mod->dm_bios.data, sc->bios.data, sc->bios.size);
}
sc->fep.size = digi_mod->dm_fep.size;
if (sc->fep.size != 0 && digi_mod->dm_fep.data != NULL) {
sc->fep.data = malloc(sc->fep.size, M_TTYS, M_WAITOK);
bcopy(digi_mod->dm_fep.data, sc->fep.data, sc->fep.size);
}
sc->link.size = digi_mod->dm_link.size;
if (sc->link.size != 0 && digi_mod->dm_link.data != NULL) {
sc->link.data = malloc(sc->link.size, M_TTYS, M_WAITOK);
bcopy(digi_mod->dm_link.data, sc->link.data, sc->link.size);
}
linker_file_unload(lf);
return (0);
}
static int
digiioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
{
int unit, pnum, mynor, error, s;
struct digi_softc *sc;
struct digi_p *port;
struct tty *tp;
#ifndef BURN_BRIDGES
#if defined(COMPAT_43)
int oldcmd;
struct termios term;
#endif
#endif
mynor = minor(dev);
unit = MINOR_TO_UNIT(mynor);
pnum = MINOR_TO_PORT(mynor);
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digiioctl\n", unit));
if (sc->status == DIGI_STATUS_DISABLED)
return (ENXIO);
if (mynor & CTRL_DEV) {
switch (cmd) {
case DIGIIO_DEBUG:
#ifdef DEBUG
digi_debug = *(int *)data;
return (0);
#else
device_printf(sc->dev, "DEBUG not defined\n");
return (ENXIO);
#endif
case DIGIIO_REINIT:
digi_loadmoduledata(sc);
error = digi_init(sc);
digi_freemoduledata(sc);
return (error);
case DIGIIO_MODEL:
*(enum digi_model *)data = sc->model;
return (0);
case DIGIIO_IDENT:
return (copyout(sc->name, *(char **)data,
strlen(sc->name) + 1));
}
}
if (pnum >= sc->numports)
return (ENXIO);
port = sc->ports + pnum;
if (!(port->status & ENABLED))
return (ENXIO);
tp = port->tp;
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);
case DIGIIO_GETALTPIN:
switch (mynor & CONTROL_MASK) {
case CONTROL_INIT_STATE:
*(int *)data = port->ialtpin;
break;
case CONTROL_LOCK_STATE:
*(int *)data = port->laltpin;
break;
default:
panic("Confusion when re-testing minor");
return (ENODEV);
}
return (0);
case DIGIIO_SETALTPIN:
switch (mynor & CONTROL_MASK) {
case CONTROL_INIT_STATE:
if (!port->laltpin) {
port->ialtpin = !!*(int *)data;
DLOG(DIGIDB_SET, (sc->dev,
"port%d: initial ALTPIN %s\n", pnum,
port->ialtpin ? "set" : "cleared"));
}
break;
case CONTROL_LOCK_STATE:
port->laltpin = !!*(int *)data;
DLOG(DIGIDB_SET, (sc->dev,
"port%d: ALTPIN %slocked\n",
pnum, port->laltpin ? "" : "un"));
break;
default:
panic("Confusion when re-testing minor");
return (ENODEV);
}
return (0);
default:
return (ENOTTY);
}
}
switch (cmd) {
case DIGIIO_GETALTPIN:
*(int *)data = !!(port->dsr == sc->csigs->cd);
return (0);
case DIGIIO_SETALTPIN:
if (!port->laltpin) {
if (*(int *)data) {
DLOG(DIGIDB_SET, (sc->dev,
"port%d: ALTPIN set\n", pnum));
port->cd = sc->csigs->dsr;
port->dsr = sc->csigs->cd;
} else {
DLOG(DIGIDB_SET, (sc->dev,
"port%d: ALTPIN cleared\n", pnum));
port->cd = sc->csigs->cd;
port->dsr = sc->csigs->dsr;
}
}
return (0);
}
tp = port->tp;
#ifndef BURN_BRIDGES
#if defined(COMPAT_43)
term = tp->t_termios;
oldcmd = cmd;
error = ttsetcompat(tp, &cmd, data, &term);
if (error != 0)
return (error);
if (cmd != oldcmd)
data = (caddr_t) & term;
#endif
#endif
if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
int cc;
struct termios *dt;
struct termios *lt;
dt = (struct termios *)data;
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);
port->c_iflag = dt->c_iflag & (IXOFF | IXON | IXANY);
dt->c_iflag &= ~(IXOFF | IXON | IXANY);
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;
}
error = ttyioctl(dev, cmd, data, flag, td);
if (error == 0 && cmd == TIOCGETA)
((struct termios *)data)->c_iflag |= port->c_iflag;
ttyldoptim(tp);
if (error >= 0 && error != ENOTTY)
return (error);
s = spltty();
sc->setwin(sc, 0);
switch (cmd) {
case DIGIIO_RING:
port->send_ring = *(u_char *)data;
break;
case TIOCSBRK:
/*
* now it sends 400 millisecond break because I don't know
* how to send an infinite break
*/
fepcmd_w(port, SENDBREAK, 400, 10);
break;
case TIOCCBRK:
/* now it's empty */
break;
case TIOCSDTR:
digimctl(port, TIOCM_DTR, DMBIS);
break;
case TIOCCDTR:
digimctl(port, TIOCM_DTR, DMBIC);
break;
case TIOCMSET:
digimctl(port, *(int *)data, DMSET);
break;
case TIOCMBIS:
digimctl(port, *(int *)data, DMBIS);
break;
case TIOCMBIC:
digimctl(port, *(int *)data, DMBIC);
break;
case TIOCMGET:
*(int *)data = digimctl(port, 0, DMGET);
break;
case TIOCMSDTRWAIT:
error = suser(td);
if (error != 0) {
splx(s);
return (error);
}
port->dtr_wait = *(int *)data *hz / 100;
break;
case TIOCMGDTRWAIT:
*(int *)data = port->dtr_wait * 100 / hz;
break;
#ifdef DIGI_INTERRUPT
case TIOCTIMESTAMP:
*(struct timeval *)data = sc->intr_timestamp;
break;
#endif
default:
splx(s);
return (ENOTTY);
}
splx(s);
return (0);
}
static int
digiparam(struct tty *tp, struct termios *t)
{
int mynor;
int unit;
int pnum;
struct digi_softc *sc;
struct digi_p *port;
int cflag;
int iflag;
int hflow;
int s;
int window;
mynor = minor(tp->t_dev);
unit = MINOR_TO_UNIT(mynor);
pnum = MINOR_TO_PORT(mynor);
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digiparam\n", unit));
port = &sc->ports[pnum];
DLOG(DIGIDB_SET, (sc->dev, "port%d: setting parameters\n", pnum));
if (t->c_ispeed == 0)
t->c_ispeed = t->c_ospeed;
cflag = ttspeedtab(t->c_ospeed, digispeedtab);
if (cflag < 0 || (cflag > 0 && t->c_ispeed != t->c_ospeed))
return (EINVAL);
s = splclock();
window = sc->window;
sc->setwin(sc, 0);
if (cflag == 0) { /* hangup */
DLOG(DIGIDB_SET, (sc->dev, "port%d: hangup\n", pnum));
digimctl(port, TIOCM_DTR | TIOCM_RTS, DMBIC);
} else {
digimctl(port, TIOCM_DTR | TIOCM_RTS, DMBIS);
DLOG(DIGIDB_SET, (sc->dev, "port%d: CBAUD = %d\n", pnum,
cflag));
#if 0
/* convert flags to sysV-style values */
if (t->c_cflag & PARODD)
cflag |= 0x0200;
if (t->c_cflag & PARENB)
cflag |= 0x0100;
if (t->c_cflag & CSTOPB)
cflag |= 0x0080;
#else
/* convert flags to sysV-style values */
if (t->c_cflag & PARODD)
cflag |= FEP_PARODD;
if (t->c_cflag & PARENB)
cflag |= FEP_PARENB;
if (t->c_cflag & CSTOPB)
cflag |= FEP_CSTOPB;
if (t->c_cflag & CLOCAL)
cflag |= FEP_CLOCAL;
#endif
cflag |= (t->c_cflag & CSIZE) >> 4;
DLOG(DIGIDB_SET, (sc->dev, "port%d: CFLAG = 0x%x\n", pnum,
cflag));
fepcmd_w(port, SETCFLAGS, (unsigned)cflag, 0);
}
iflag =
t->c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK | INPCK | ISTRIP);
if (port->c_iflag & IXON)
iflag |= 0x400;
if (port->c_iflag & IXANY)
iflag |= 0x800;
if (port->c_iflag & IXOFF)
iflag |= 0x1000;
DLOG(DIGIDB_SET, (sc->dev, "port%d: set iflag = 0x%x\n", pnum, iflag));
fepcmd_w(port, SETIFLAGS, (unsigned)iflag, 0);
hflow = 0;
if (t->c_cflag & CDTR_IFLOW)
hflow |= sc->csigs->dtr;
if (t->c_cflag & CRTS_IFLOW)
hflow |= sc->csigs->rts;
if (t->c_cflag & CCTS_OFLOW)
hflow |= sc->csigs->cts;
if (t->c_cflag & CDSR_OFLOW)
hflow |= port->dsr;
if (t->c_cflag & CCAR_OFLOW)
hflow |= port->cd;
DLOG(DIGIDB_SET, (sc->dev, "port%d: set hflow = 0x%x\n", pnum, hflow));
fepcmd_w(port, SETHFLOW, 0xff00 | (unsigned)hflow, 0);
DLOG(DIGIDB_SET, (sc->dev, "port%d: set startc(0x%x), stopc(0x%x)\n",
pnum, t->c_cc[VSTART], t->c_cc[VSTOP]));
fepcmd_b(port, SONOFFC, t->c_cc[VSTART], t->c_cc[VSTOP], 0);
if (sc->window != 0)
sc->towin(sc, 0);
if (window != 0)
sc->towin(sc, window);
splx(s);
return (0);
}
static void
digi_intr(void *vp)
{
struct digi_p *port;
char *cxcon;
struct digi_softc *sc;
int ehead, etail;
volatile struct board_chan *bc;
struct tty *tp;
int head, tail;
int wrapmask;
int size, window;
struct event {
u_char pnum;
u_char event;
u_char mstat;
u_char lstat;
} event;
sc = vp;
if (sc->status != DIGI_STATUS_ENABLED) {
DLOG(DIGIDB_IRQ, (sc->dev, "interrupt on disabled board !\n"));
return;
}
#ifdef DIGI_INTERRUPT
microtime(&sc->intr_timestamp);
#endif
window = sc->window;
sc->setwin(sc, 0);
if (sc->model >= PCXEM && W(sc->vmem + 0xd00)) {
struct con_bios *con = con_bios_list;
register u_char *ptr;
ptr = sc->vmem + W(sc->vmem + 0xd00);
while (con) {
if (ptr[1] && W(ptr + 2) == W(con->bios + 2))
/* Not first block -- exact match */
break;
if (W(ptr + 4) >= W(con->bios + 4) &&
W(ptr + 4) <= W(con->bios + 6))
/* Initial search concetrator BIOS */
break;
}
if (con == NULL) {
log(LOG_ERR, "digi%d: wanted bios LREV = 0x%04x"
" not found!\n", sc->res.unit, W(ptr + 4));
W(ptr + 10) = 0;
W(sc->vmem + 0xd00) = 0;
goto eoi;
}
cxcon = con->bios;
W(ptr + 4) = W(cxcon + 4);
W(ptr + 6) = W(cxcon + 6);
if (ptr[1] == 0)
W(ptr + 2) = W(cxcon + 2);
W(ptr + 8) = (ptr[1] << 6) + W(cxcon + 8);
size = W(cxcon + 10) - (ptr[1] << 10);
if (size <= 0) {
W(ptr + 8) = W(cxcon + 8);
W(ptr + 10) = 0;
} else {
if (size > 1024)
size = 1024;
W(ptr + 10) = size;
bcopy(cxcon + (ptr[1] << 10), ptr + 12, size);
}
W(sc->vmem + 0xd00) = 0;
goto eoi;
}
ehead = sc->gdata->ein;
etail = sc->gdata->eout;
if (ehead == etail) {
#ifdef DEBUG
sc->intr_count++;
if (sc->intr_count % 6000 == 0) {
DLOG(DIGIDB_IRQ, (sc->dev,
"6000 useless polls %x %x\n", ehead, etail));
sc->intr_count = 0;
}
#endif
goto eoi;
}
while (ehead != etail) {
event = *(volatile struct event *)(sc->memevent + etail);
etail = (etail + 4) & sc->gdata->imax;
if (event.pnum >= sc->numports) {
log(LOG_ERR, "digi%d: port %d: got event"
" on nonexisting port\n", sc->res.unit,
event.pnum);
continue;
}
port = &sc->ports[event.pnum];
bc = port->bc;
tp = port->tp;
if (!(tp->t_state & TS_ISOPEN) && !port->wopeners) {
DLOG(DIGIDB_IRQ, (sc->dev,
"port %d: event 0x%x on closed port\n",
event.pnum, event.event));
bc->rout = bc->rin;
bc->idata = 0;
bc->iempty = 0;
bc->ilow = 0;
bc->mint = 0;
continue;
}
if (event.event & ~ALL_IND)
log(LOG_ERR, "digi%d: port%d: ? event 0x%x mstat 0x%x"
" lstat 0x%x\n", sc->res.unit, event.pnum,
event.event, event.mstat, event.lstat);
if (event.event & DATA_IND) {
DLOG(DIGIDB_IRQ, (sc->dev, "port %d: DATA_IND\n",
event.pnum));
wrapmask = port->rxbufsize - 1;
head = bc->rin;
tail = bc->rout;
size = 0;
if (!(tp->t_state & TS_ISOPEN)) {
bc->rout = head;
goto end_of_data;
}
while (head != tail) {
int top;
DLOG(DIGIDB_INT, (sc->dev,
"port %d: p rx head = %d tail = %d\n",
event.pnum, head, tail));
top = (head > tail) ? head : wrapmask + 1;
sc->towin(sc, port->rxwin);
size = top - tail;
if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
size = b_to_q((char *)port->rxbuf +
tail, size, &tp->t_rawq);
tail = top - size;
ttwakeup(tp);
} else for (; tail < top;) {
ttyld_rint(tp, port->rxbuf[tail]);
sc->towin(sc, port->rxwin);
size--;
tail++;
if (tp->t_state & TS_TBLOCK)
break;
}
tail &= wrapmask;
sc->setwin(sc, 0);
bc->rout = tail;
head = bc->rin;
if (size)
break;
}
if (bc->orun) {
CE_RECORD(port, CE_OVERRUN);
log(LOG_ERR, "digi%d: port%d: %s\n",
sc->res.unit, event.pnum,
digi_errortxt(CE_OVERRUN));
bc->orun = 0;
}
end_of_data:
if (size) {
tp->t_state |= TS_TBLOCK;
port->status |= PAUSE_RX;
DLOG(DIGIDB_RX, (sc->dev, "port %d: pause RX\n",
event.pnum));
} else {
bc->idata = 1;
}
}
if (event.event & MODEMCHG_IND) {
DLOG(DIGIDB_MODEM, (sc->dev, "port %d: MODEMCHG_IND\n",
event.pnum));
if ((event.mstat ^ event.lstat) & port->cd) {
sc->hidewin(sc);
ttyld_modem(tp, event.mstat & port->cd);
sc->setwin(sc, 0);
wakeup(TSA_CARR_ON(tp));
}
if (event.mstat & sc->csigs->ri) {
DLOG(DIGIDB_RI, (sc->dev, "port %d: RING\n",
event.pnum));
if (port->send_ring) {
ttyld_rint(tp, 'R');
ttyld_rint(tp, 'I');
ttyld_rint(tp, 'N');
ttyld_rint(tp, 'G');
ttyld_rint(tp, '\r');
ttyld_rint(tp, '\n');
}
}
}
if (event.event & BREAK_IND) {
DLOG(DIGIDB_MODEM, (sc->dev, "port %d: BREAK_IND\n",
event.pnum));
ttyld_rint(tp, TTY_BI);
}
if (event.event & (LOWTX_IND | EMPTYTX_IND)) {
DLOG(DIGIDB_IRQ, (sc->dev, "port %d:%s%s\n",
event.pnum,
event.event & LOWTX_IND ? " LOWTX" : "",
event.event & EMPTYTX_IND ? " EMPTYTX" : ""));
ttyld_start(tp);
}
}
sc->gdata->eout = etail;
eoi:
if (sc->window != 0)
sc->towin(sc, 0);
if (window != 0)
sc->towin(sc, window);
}
static void
digistart(struct tty *tp)
{
int unit;
int pnum;
struct digi_p *port;
struct digi_softc *sc;
volatile struct board_chan *bc;
int head, tail;
int size, ocount, totcnt = 0;
int s;
int wmask;
unit = MINOR_TO_UNIT(minor(tp->t_dev));
pnum = MINOR_TO_PORT(minor(tp->t_dev));
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digistart\n", unit));
port = &sc->ports[pnum];
bc = port->bc;
wmask = port->txbufsize - 1;
s = spltty();
port->lcc = tp->t_outq.c_cc;
sc->setwin(sc, 0);
if (!(tp->t_state & TS_TBLOCK)) {
if (port->status & PAUSE_RX) {
DLOG(DIGIDB_RX, (sc->dev, "port %d: resume RX\n",
pnum));
/*
* CAREFUL - braces are needed here if the DLOG is
* optimised out!
*/
}
port->status &= ~PAUSE_RX;
bc->idata = 1;
}
if (!(tp->t_state & TS_TTSTOP) && port->status & PAUSE_TX) {
DLOG(DIGIDB_TX, (sc->dev, "port %d: resume TX\n", pnum));
port->status &= ~PAUSE_TX;
fepcmd_w(port, RESUMETX, 0, 10);
}
if (tp->t_outq.c_cc == 0)
tp->t_state &= ~TS_BUSY;
else
tp->t_state |= TS_BUSY;
head = bc->tin;
while (tp->t_outq.c_cc != 0) {
tail = bc->tout;
DLOG(DIGIDB_INT, (sc->dev, "port%d: s tx head = %d tail = %d\n",
pnum, head, tail));
if (head < tail)
size = tail - head - 1;
else {
size = port->txbufsize - head;
if (tail == 0)
size--;
}
if (size == 0)
break;
sc->towin(sc, port->txwin);
ocount = q_to_b(&tp->t_outq, port->txbuf + head, size);
totcnt += ocount;
head += ocount;
head &= wmask;
sc->setwin(sc, 0);
bc->tin = head;
bc->iempty = 1;
bc->ilow = 1;
}
port->lostcc = tp->t_outq.c_cc;
tail = bc->tout;
if (head < tail)
size = port->txbufsize - tail + head;
else
size = head - tail;
port->lbuf = size;
DLOG(DIGIDB_INT, (sc->dev, "port%d: s total cnt = %d\n", pnum, totcnt));
ttwwakeup(tp);
splx(s);
}
static void
digistop(struct tty *tp, int rw)
{
struct digi_softc *sc;
int unit;
int pnum;
struct digi_p *port;
unit = MINOR_TO_UNIT(minor(tp->t_dev));
pnum = MINOR_TO_PORT(minor(tp->t_dev));
sc = (struct digi_softc *)devclass_get_softc(digi_devclass, unit);
KASSERT(sc, ("digi%d: softc not allocated in digistop\n", unit));
port = sc->ports + pnum;
DLOG(DIGIDB_TX, (sc->dev, "port %d: pause TX\n", pnum));
port->status |= PAUSE_TX;
fepcmd_w(port, PAUSETX, 0, 10);
}
static void
fepcmd(struct digi_p *port, int cmd, int op1, int ncmds)
{
u_char *mem;
unsigned tail, head;
int count, n;
mem = port->sc->memcmd;
port->sc->setwin(port->sc, 0);
head = port->sc->gdata->cin;
mem[head + 0] = cmd;
mem[head + 1] = port->pnum;
*(u_short *)(mem + head + 2) = op1;
head = (head + 4) & port->sc->gdata->cmax;
port->sc->gdata->cin = head;
for (count = FEPTIMEOUT; count > 0; count--) {
head = port->sc->gdata->cin;
tail = port->sc->gdata->cout;
n = (head - tail) & port->sc->gdata->cmax;
if (n <= ncmds * sizeof(short) * 4)
break;
}
if (count == 0)
log(LOG_ERR, "digi%d: port%d: timeout on FEP command\n",
port->sc->res.unit, port->pnum);
}
const char *
digi_errortxt(int id)
{
static const char *error_desc[] = {
"silo overflow",
"interrupt-level buffer overflow",
"tty-level buffer overflow",
};
KASSERT(id >= 0 && id < sizeof(error_desc) / sizeof(error_desc[0]),
("Unexpected digi error id %d\n", id));
return (error_desc[id]);
}
int
digi_attach(struct digi_softc *sc)
{
sc->res.ctldev = make_dev(&digi_sw,
(sc->res.unit << 16) | CTRL_DEV, UID_ROOT, GID_WHEEL,
0600, "digi%r.ctl", sc->res.unit);
digi_loadmoduledata(sc);
digi_init(sc);
digi_freemoduledata(sc);
return (0);
}
static int
digi_inuse(struct digi_softc *sc)
{
int i;
for (i = 0; i < sc->numports; i++)
if (sc->ttys[i].t_state & TS_ISOPEN) {
DLOG(DIGIDB_INIT, (sc->dev, "port%d: busy\n", i));
return (1);
} else if (sc->ports[i].wopeners || sc->ports[i].opencnt) {
DLOG(DIGIDB_INIT, (sc->dev, "port%d: blocked in open\n",
i));
return (1);
}
return (0);
}
static void
digi_free_state(struct digi_softc *sc)
{
int d, i;
/* Blow it all away */
for (i = 0; i < sc->numports; i++)
for (d = 0; d < 6; d++)
destroy_dev(sc->ports[i].dev[d]);
untimeout(digi_poll, sc, sc->callout);
callout_handle_init(&sc->callout);
untimeout(digi_int_test, sc, sc->inttest);
callout_handle_init(&sc->inttest);
bus_teardown_intr(sc->dev, sc->res.irq, sc->res.irqHandler);
#ifdef DIGI_INTERRUPT
if (sc->res.irq != NULL) {
bus_release_resource(dev, SYS_RES_IRQ, sc->res.irqrid,
sc->res.irq);
sc->res.irq = NULL;
}
#endif
if (sc->numports) {
KASSERT(sc->ports, ("digi%d: Lost my ports ?", sc->res.unit));
KASSERT(sc->ttys, ("digi%d: Lost my ttys ?", sc->res.unit));
free(sc->ports, M_TTYS);
sc->ports = NULL;
free(sc->ttys, M_TTYS);
sc->ttys = NULL;
sc->numports = 0;
}
sc->status = DIGI_STATUS_NOTINIT;
}
int
digi_detach(device_t dev)
{
struct digi_softc *sc = device_get_softc(dev);
DLOG(DIGIDB_INIT, (sc->dev, "detaching\n"));
/* If we're INIT'd, numports must be 0 */
KASSERT(sc->numports == 0 || sc->status != DIGI_STATUS_NOTINIT,
("digi%d: numports(%d) & status(%d) are out of sync",
sc->res.unit, sc->numports, (int)sc->status));
if (digi_inuse(sc))
return (EBUSY);
digi_free_state(sc);
destroy_dev(sc->res.ctldev);
if (sc->res.mem != NULL) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->res.mrid,
sc->res.mem);
sc->res.mem = NULL;
}
if (sc->res.io != NULL) {
bus_release_resource(dev, SYS_RES_IOPORT, sc->res.iorid,
sc->res.io);
sc->res.io = NULL;
}
return (0);
}
int
digi_shutdown(device_t dev)
{
return (0);
}
MODULE_VERSION(digi, 1);
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