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path: root/sys/arch/sparc/dev/z8530tty.c
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Diffstat (limited to 'sys/arch/sparc/dev/z8530tty.c')
-rw-r--r--sys/arch/sparc/dev/z8530tty.c128
1 files changed, 102 insertions, 26 deletions
diff --git a/sys/arch/sparc/dev/z8530tty.c b/sys/arch/sparc/dev/z8530tty.c
index 9582081840f..359209f0af0 100644
--- a/sys/arch/sparc/dev/z8530tty.c
+++ b/sys/arch/sparc/dev/z8530tty.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: z8530tty.c,v 1.13 2009/11/09 17:53:39 nicm Exp $ */
+/* $OpenBSD: z8530tty.c,v 1.14 2010/03/03 20:13:32 miod Exp $ */
/* $NetBSD: z8530tty.c,v 1.13 1996/10/16 20:42:14 gwr Exp $ */
/*-
@@ -230,8 +230,8 @@ void zstty_txint(struct zs_chanstate *);
void zstty_softint(struct zs_chanstate *);
void zstty_diag(void *);
-#define ZSUNIT(x) (minor(x) & 0x7ffff)
-#define ZSDIALOUT(x) (minor(x) & 0x80000)
+#define ZSUNIT(x) (minor(x) & 0x7f)
+#define ZSDIALOUT(x) (minor(x) & 0x80)
/*
* zstty_match: how is this zs channel configured?
@@ -421,7 +421,7 @@ zstty(dev)
dev_t dev;
{
struct zstty_softc *zst;
- int unit = minor(dev);
+ int unit = ZSUNIT(dev);
#ifdef DIAGNOSTIC
if (unit >= zstty_cd.cd_ndevs)
@@ -456,8 +456,9 @@ zs_shutdown(zst)
* Hang up if necessary. Wait a bit, so the other side has time to
* notice even if we immediately open the port again.
*/
- if (ISSET(tp->t_cflag, HUPCL)) {
+ if (ISSET(tp->t_cflag, HUPCL) || ISSET(tp->t_state, TS_WOPEN)) {
zs_modem(zst, 0);
+ /* hold low for 1 second */
(void) tsleep(cs, TTIPRI, ttclos, hz);
}
@@ -496,7 +497,7 @@ zsopen(dev, flags, mode, p)
int s, s2;
int error, unit;
- unit = minor(dev);
+ unit = ZSUNIT(dev);
if (unit >= zstty_cd.cd_ndevs)
return (ENXIO);
zst = zstty_cd.cd_devs[unit];
@@ -584,16 +585,12 @@ zsopen(dev, flags, mode, p)
ttychars(tp);
ttsetwater(tp);
- s2 = splzs();
+ if (ZSDIALOUT(dev))
+ SET(tp->t_state, TS_CARR_ON);
+ else
+ CLR(tp->t_state, TS_CARR_ON);
- /*
- * Turn on DTR. We must always do this, even if carrier is not
- * present, because otherwise we'd have to use TIOCSDTR
- * immediately after setting CLOCAL, which applications do not
- * expect. We always assert DTR while the device is open
- * unless explicitly requested to deassert it.
- */
- zs_modem(zst, 1);
+ s2 = splzs();
/* Clear the input ring, and unblock. */
zst->zst_rbget = zst->zst_rbput = zst->zst_rbuf;
@@ -605,9 +602,83 @@ zsopen(dev, flags, mode, p)
splx(s2);
}
+ if (ZSDIALOUT(dev)) {
+ if (ISSET(tp->t_state, TS_ISOPEN)) {
+ /* someone already is dialed in... */
+ splx(s);
+ return EBUSY;
+ }
+ cs->cs_cua = 1;
+ }
+
+ error = 0;
+ /* wait for carrier if necessary */
+ if (ISSET(flags, O_NONBLOCK)) {
+ if (!ZSDIALOUT(dev) && cs->cs_cua) {
+ /* Opening TTY non-blocking... but the CUA is busy */
+ error = EBUSY;
+ }
+ } else
+ while (cs->cs_cua ||
+ (!ISSET(tp->t_cflag, CLOCAL) && !ISSET(tp->t_state, TS_CARR_ON))) {
+ int rr0;
+
+ error = 0;
+ SET(tp->t_state, TS_WOPEN);
+
+ if (!ZSDIALOUT(dev) && !cs->cs_cua) {
+ /*
+ * Turn on DTR. We must always do this on non-CUA
+ * devices, even if carrier is not present, because
+ * otherwise we'd have to use TIOCSDTR immediately
+ * after setting CLOCAL, which applications do not
+ * expect. We always assert DTR while the device is
+ * open unless explicitly requested to deassert it.
+ */
+ s2 = splzs();
+ zs_modem(zst, 1);
+ rr0 = zs_read_csr(cs);
+ splx(s2);
+
+ /* loop, turning on the device, until carrier present */
+ if (ISSET(rr0, ZSRR0_DCD) ||
+ ISSET(zst->zst_swflags, TIOCFLAG_SOFTCAR))
+ SET(tp->t_state, TS_CARR_ON);
+ }
+
+ if ((ISSET(tp->t_cflag, CLOCAL) ||
+ ISSET(tp->t_state, TS_CARR_ON)) && !cs->cs_cua)
+ break;
+
+ error = ttysleep(tp, (caddr_t)&tp->t_rawq, TTIPRI | PCATCH,
+ ttopen, 0);
+
+ if (!ZSDIALOUT(dev) && cs->cs_cua && error == EINTR) {
+ error = 0;
+ continue;
+ }
+
+ if (error) {
+ if (!ISSET(tp->t_state, TS_ISOPEN)) {
+ s2 = splzs();
+ zs_modem(zst, 0);
+ splx(s2);
+ CLR(tp->t_state, TS_WOPEN);
+ ttwakeup(tp);
+ }
+ if (ZSDIALOUT(dev))
+ cs->cs_cua = 0;
+ CLR(tp->t_state, TS_WOPEN);
+ break;
+ }
+ if (!ZSDIALOUT(dev) && cs->cs_cua)
+ continue;
+ }
+
splx(s);
- error = ((*linesw[tp->t_line].l_open)(dev, tp));
+ if (error == 0)
+ error = ((*linesw[tp->t_line].l_open)(dev, tp));
if (error)
goto bad;
@@ -636,10 +707,11 @@ zsclose(dev, flags, mode, p)
struct proc *p;
{
struct zstty_softc *zst;
- register struct zs_chanstate *cs;
- register struct tty *tp;
+ struct zs_chanstate *cs;
+ struct tty *tp;
+ int s;
- zst = zstty_cd.cd_devs[minor(dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(dev)];
cs = zst->zst_cs;
tp = zst->zst_tty;
@@ -648,7 +720,11 @@ zsclose(dev, flags, mode, p)
return 0;
(*linesw[tp->t_line].l_close)(tp, flags);
+
+ s = spltty();
+ cs->cs_cua = 0;
ttyclose(tp);
+ splx(s);
if (!ISSET(tp->t_state, TS_ISOPEN)) {
/*
@@ -674,7 +750,7 @@ zsread(dev, uio, flags)
struct zstty_softc *zst;
struct tty *tp;
- zst = zstty_cd.cd_devs[minor(dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(dev)];
tp = zst->zst_tty;
return (*linesw[tp->t_line].l_read)(tp, uio, flags);
@@ -689,7 +765,7 @@ zswrite(dev, uio, flags)
struct zstty_softc *zst;
struct tty *tp;
- zst = zstty_cd.cd_devs[minor(dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(dev)];
tp = zst->zst_tty;
return (*linesw[tp->t_line].l_write)(tp, uio, flags);
@@ -712,7 +788,7 @@ zsioctl(dev, cmd, data, flag, p)
int error;
int s;
- zst = zstty_cd.cd_devs[minor(dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(dev)];
cs = zst->zst_cs;
tp = zst->zst_tty;
@@ -793,7 +869,7 @@ zsstart(tp)
struct zs_chanstate *cs;
int s;
- zst = zstty_cd.cd_devs[minor(tp->t_dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(tp->t_dev)];
cs = zst->zst_cs;
s = spltty();
@@ -858,7 +934,7 @@ zsstop(tp, flag)
struct zs_chanstate *cs;
int s;
- zst = zstty_cd.cd_devs[minor(tp->t_dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(tp->t_dev)];
cs = zst->zst_cs;
s = splzs();
@@ -889,7 +965,7 @@ zsparam(tp, t)
u_char tmp3, tmp4, tmp5;
int s, error;
- zst = zstty_cd.cd_devs[minor(tp->t_dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(tp->t_dev)];
cs = zst->zst_cs;
ospeed = t->c_ospeed;
@@ -1188,7 +1264,7 @@ zshwiflow(tp, block)
struct zs_chanstate *cs;
int s;
- zst = zstty_cd.cd_devs[minor(tp->t_dev)];
+ zst = zstty_cd.cd_devs[ZSUNIT(tp->t_dev)];
cs = zst->zst_cs;
if (cs->cs_wr5_rts == 0)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 21:50:51 +0000