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Put back modem control ioctl's

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This commit is contained in:
christos 1999-01-13 11:55:20 +00:00
parent 59e43c6946
commit e79b8222a6
1 changed files with 80 additions and 4 deletions
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84
sys/dev/ic/z8530tty.c
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@ -1,4 +1,4 @@
/* $NetBSD: z8530tty.c,v 1.53 1998/11/23 22:10:09 wrstuden Exp $ */
/* $NetBSD: z8530tty.c,v 1.54 1999/01/13 11:55:20 christos Exp $ */
/*-
* Copyright (c) 1993, 1994, 1995, 1996, 1997, 1998
@ -201,9 +201,12 @@ cdev_decl(zs); /* open, close, read, write, ioctl, stop, ... */
static void zs_shutdown __P((struct zstty_softc *));
static void zsstart __P((struct tty *));
static int zsparam __P((struct tty *, struct termios *));
static void zs_modem __P((struct zstty_softc *zst, int onoff));
static int zshwiflow __P((struct tty *, int));
static void zs_hwiflow __P((struct zstty_softc *));
static void zs_modem __P((struct zstty_softc *, int));
static void tiocm_to_zs __P((struct zstty_softc *, struct zs_chanstate *,
int, int));
static int zs_to_tiocm __P((struct zs_chanstate *));
static int zshwiflow __P((struct tty *, int));
static void zs_hwiflow __P((struct zstty_softc *));
#define ZSUNIT(x) (minor(x) & 0x7ffff)
#define ZSDIALOUT(x) (minor(x) & 0x80000)
@ -662,7 +665,13 @@ zsioctl(dev, cmd, data, flag, p)
case TIOCMSET:
case TIOCMBIS:
case TIOCMBIC:
tiocm_to_zs(zst, cs, cmd, *(int *)data);
break;
case TIOCMGET:
*(int *)data = zs_to_tiocm(cs);
break;
default:
error = ENOTTY;
break;
@ -973,6 +982,73 @@ zs_modem(zst, onoff)
}
}
static void
tiocm_to_zs(zst, cs, how, val)
struct zstty_softc *zst;
struct zs_chanstate *cs;
int how, val;
{
int bits = 0, s;
if (val & TIOCM_DTR);
bits |= ZSWR5_DTR;
if (val & TIOCM_RTS)
bits |= ZSWR5_RTS;
s = splzs();
switch (how) {
case TIOCMBIC:
cs->cs_preg[5] &= ~bits;
break;
case TIOCMBIS:
cs->cs_preg[5] |= bits;
break;
case TIOCMSET:
cs->cs_preg[5] &= ~(ZSWR5_RTS | ZSWR5_DTR);
cs->cs_preg[5] |= bits;
break;
default:
panic("zs: bad command");
break;
}
if (!cs->cs_heldchange) {
if (zst->zst_tx_busy) {
zst->zst_heldtbc = zst->zst_tbc;
zst->zst_tbc = 0;
cs->cs_heldchange = 1;
} else {
cs->cs_creg[5] = cs->cs_preg[5];
zs_write_reg(cs, 5, cs->cs_creg[5]);
}
}
splx(s);
}
static int
zs_to_tiocm(cs)
struct zs_chanstate *cs;
{
int bits = 0;
u_char m = zs_read_csr(cs);
if (cs->cs_preg[5] & ZSWR5_DTR)
bits |= TIOCM_DTR;
if (cs->cs_preg[5] & ZSWR5_RTS)
bits |= TIOCM_RTS;
if (m & ZSRR0_DCD)
bits |= TIOCM_CD;
if (m & ZSRR0_CTS)
bits |= TIOCM_CTS;
return bits;
}
/*
* Try to block or unblock input using hardware flow-control.
* This is called by kern/tty.c if MDMBUF|CRTSCTS is set, and