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Make the prom console work as a real device as well as a console.

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This commit is contained in:
Doug Rabson 1998-07-05 11:59:44 +00:00
parent 86cabe47cb
commit 43ab2043e9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37397
2 changed files with 64 additions and 43 deletions
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2
sys/alpha/alpha/prom.c
View file

@ -51,7 +51,7 @@
/* XXX this is to fake out the console routines, while booting. */
struct consdev promcons = { NULL, NULL, promcngetc, NULL, promcnputc,
NULL, NODEV, CN_NORMAL };
NULL, makedev(97,0), CN_NORMAL };
struct rpb *hwrpb;
int alpha_console;

105
sys/alpha/alpha/promcons.c
View file

@ -1,3 +1,4 @@
/* $Id$ */
/* $NetBSD: promcons.c,v 1.13 1998/03/21 22:52:59 mycroft Exp $ */
/*
@ -27,34 +28,57 @@
* rights to redistribute these changes.
*/
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: promcons.c,v 1.13 1998/03/21 22:52:59 mycroft Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/types.h>
#include <sys/device.h>
#include <vm/vm.h> /* XXX for _PMAP_MAY_USE_PROM_CONSOLE */
#include <sys/ucred.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_prot.h>
#include <sys/lock.h>
#include <vm/vm_kern.h>
#include <vm/vm_page.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#include <vm/vm_pageout.h>
#include <vm/vm_pager.h>
#include <vm/vm_zone.h>
#include <machine/conf.h>
#include <machine/prom.h>
#define _PMAP_MAY_USE_PROM_CONSOLE /* XXX for now */
#ifdef _PMAP_MAY_USE_PROM_CONSOLE
#define PROM_POLL_HZ 50
static struct tty *prom_tty[1];
static d_open_t promopen;
static d_close_t promclose;
static d_read_t promread;
static d_write_t promwrite;
static d_ioctl_t promioctl;
static d_stop_t promstop;
static d_devtotty_t promdevtotty;
#define CDEV_MAJOR 97
static struct cdevsw prom_cdevsw = {
promopen, promclose, promread, promwrite,
promioctl, promstop, noreset, promdevtotty,
ttpoll, nommap, NULL, "prom",
NULL, -1,
};
static struct tty prom_tty[1];
static int polltime;
static struct callout_handle promtimeouthandle
= CALLOUT_HANDLE_INITIALIZER(&promtimeouthandle);
void promstart __P((struct tty *));
void promtimeout __P((void *));
@ -76,11 +100,7 @@ promopen(dev, flag, mode, p)
s = spltty();
if (!prom_tty[unit]) {
tp = prom_tty[unit] = ttymalloc();
tty_attach(tp);
} else
tp = prom_tty[unit];
tp = &prom_tty[unit];
tp->t_oproc = promstart;
tp->t_param = promparam;
@ -108,7 +128,7 @@ promopen(dev, flag, mode, p)
polltime = hz / PROM_POLL_HZ;
if (polltime < 1)
polltime = 1;
timeout(promtimeout, tp, polltime);
promtimeouthandle = timeout(promtimeout, tp, polltime);
}
return error;
}
@ -120,9 +140,9 @@ promclose(dev, flag, mode, p)
struct proc *p;
{
int unit = minor(dev);
struct tty *tp = prom_tty[unit];
struct tty *tp = &prom_tty[unit];
untimeout(promtimeout, tp);
untimeout(promtimeout, tp, promtimeouthandle);
(*linesw[tp->t_line].l_close)(tp, flag);
ttyclose(tp);
return 0;
@ -134,7 +154,7 @@ promread(dev, uio, flag)
struct uio *uio;
int flag;
{
struct tty *tp = prom_tty[minor(dev)];
struct tty *tp = &prom_tty[minor(dev)];
return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
}
@ -145,7 +165,7 @@ promwrite(dev, uio, flag)
struct uio *uio;
int flag;
{
struct tty *tp = prom_tty[minor(dev)];
struct tty *tp = &prom_tty[minor(dev)];
return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
}
@ -159,14 +179,14 @@ promioctl(dev, cmd, data, flag, p)
struct proc *p;
{
int unit = minor(dev);
struct tty *tp = prom_tty[unit];
struct tty *tp = &prom_tty[unit];
int error;
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error >= 0)
if (error != ENOIOCTL)
return error;
error = ttioctl(tp, cmd, data, flag, p);
if (error >= 0)
error = ttioctl(tp, cmd, data, flag);
if (error != ENOIOCTL)
return error;
return ENOTTY;
@ -188,20 +208,19 @@ promstart(tp)
int s;
s = spltty();
if (tp->t_state & (TS_TTSTOP | TS_BUSY))
goto out;
if (tp->t_outq.c_cc <= tp->t_lowat) {
if (tp->t_state & TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)&tp->t_outq);
}
selwakeup(&tp->t_wsel);
if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
ttwwakeup(tp);
splx(s);
return;
}
tp->t_state |= TS_BUSY;
while (tp->t_outq.c_cc != 0)
promcnputc(tp->t_dev, getc(&tp->t_outq));
tp->t_state &= ~TS_BUSY;
out:
ttwwakeup(tp);
splx(s);
}
@ -232,18 +251,20 @@ promtimeout(v)
if (tp->t_state & TS_ISOPEN)
(*linesw[tp->t_line].l_rint)(c, tp);
}
timeout(promtimeout, tp, polltime);
promtimeouthandle = timeout(promtimeout, tp, polltime);
}
struct tty *
promtty(dev)
promdevtotty(dev)
dev_t dev;
{
if (minor(dev) != 0)
panic("promtty: bogus");
return prom_tty[0];
return &prom_tty[0];
}
CDEV_MODULE(prom, CDEV_MAJOR, prom_cdevsw, 0, 0);
#endif /* _PMAP_MAY_USE_PROM_CONSOLE */