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-rw-r--r--chips/serial_console.c694
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diff --git a/chips/serial_console.c b/chips/serial_console.c
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index 7b15dd4..0000000
--- a/chips/serial_console.c
+++ /dev/null
@@ -1,694 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
- * File: serial_console.c
- * Author: Alessandro Forin, Carnegie Mellon University
- * Date: 7/91
- *
- * Console driver for serial-line based consoles.
- */
-
-#include <constty.h>
-#if NCONSTTY > 0
-#include <bm.h>
-#include <platforms.h>
-
-#include <mach_kdb.h>
-
-#include <machine/machspl.h> /* spl definitions */
-#include <device/io_req.h>
-#include <device/tty.h>
-#include <sys/syslog.h>
-
-#include <chips/busses.h>
-#include <chips/screen_defs.h>
-#include <chips/serial_defs.h>
-
-#ifdef DECSTATION
-#include <mips/prom_interface.h>
-#define find_rconsole(p) dec_check_rcline(p)
-#define CONSOLE_SERIAL_LINE_NO 3
-#endif /*DECSTATION*/
-
-#ifdef VAXSTATION
-#define find_rconsole(p)
-#define cnputc ser_putc
-#define cngetc ser_getc
-#define cnpollc ser_pollc
-#define cnmaygetc ser_maygetc
-#define CONSOLE_SERIAL_LINE_NO 3
-#endif /*VAXSTATION*/
-
-#ifdef FLAMINGO
-#define CONSOLE_SERIAL_LINE_NO 3
-#endif
-
-#ifndef CONSOLE_SERIAL_LINE_NO
-#define CONSOLE_SERIAL_LINE_NO 0
-#endif
-
-/* Size this as max possible number of lines in any serial chip we might use */
-static struct tty console_tty_data[NCONSTTY];
-struct tty *console_tty[NCONSTTY]; /* exported */
-
-#define DEFAULT_SPEED B9600
-#define DEFAULT_FLAGS (TF_EVENP|TF_ODDP|TF_ECHO)
-
-
-/*
- * A machine MUST have a console. In our case
- * things are a little complicated by the graphic
- * display: people expect it to be their "console",
- * but we'd like to be able to live without it.
- * This is not to be confused with the "rconsole" thing:
- * that just duplicates the console I/O to
- * another place (for debugging/logging purposes).
- *
- * There is then another historical kludge: if
- * there is a graphic display it is assumed that
- * the minor "1" is the mouse, with some more
- * magic attached to it. And again, one might like to
- * use the serial line 1 as a regular one.
- *
- */
-#define user_console 0
-
-int console = 0;
-
-int (*console_probe)() = 0,
- (*console_param)() = 0,
- (*console_start)() = 0,
- (*console_putc)() = 0,
- (*console_getc)() = 0,
- (*console_pollc)() = 0,
- (*console_mctl)() = 0,
- (*console_softCAR)() = 0;
-
-/*
- * Lower-level (internal) interfaces, for printf and gets
- */
-int cnunit = 0; /* which unit owns the 'console' */
-int cnline = 0; /* which line of that unit */
-int rcline = 3; /* alternate, "remote console" line */
-
-rcoff()
-{
- spl_t s = splhigh();
- cnpollc(FALSE);
- rcline = 0;
- cnpollc(TRUE);
- splx(s);
-}
-
-rcputc(c)
-{
- if (rcline)
- (*console_putc)( cnunit, rcline, c);
-}
-
-cnputc(c)
-{
-#if NBM > 0
- if (SCREEN_ISA_CONSOLE()) {
- /* this does its own rcputc */
- screen_blitc(SCREEN_CONS_UNIT(), c);
- } else
-#endif NBM > 0
- {
- rcputc(c);
- (*console_putc)( cnunit, cnline, c);/* insist on a console still */
- }
- if (c == '\n')
- cnputc('\r');
-}
-
-cngetc()
-{
- return (*console_getc)( cnunit, cnline, TRUE, FALSE);
-}
-
-cnpollc(bool)
-{
- (*console_pollc)(cnunit, bool);
-}
-
-
-/* Debugger support */
-cnmaygetc()
-{
- return (*console_getc)( cnunit, cnline, FALSE, FALSE);
-}
-
-
-#if NBM > 0
-boolean_t
-screen_captures(line)
- register int line;
-{
- return (SCREEN_ISA_CONSOLE() &&
- ((line == SCREEN_LINE_KEYBOARD) ||
- (line == SCREEN_LINE_POINTER)));
-}
-#endif
-
-/*
- * Higher level (external) interface, for GP use
- */
-
-
-/*
- * This is basically a special form of autoconf,
- * to get printf() going before true autoconf.
- */
-cons_find(tube)
- boolean_t tube;
-{
- static struct bus_device d;
- register int i;
- struct tty *tp;
-
- for (i = 0; i < NCONSTTY; i++)
- console_tty[i] = &console_tty_data[i];
- /* the hardware device will set tp->t_addr for valid ttys */
-
- d.unit = 0;
-
- if ((console_probe == 0) ||
- ((*console_probe)(0, &d) == 0)) {
- /* we have no console, but maybe that's ok */
-#if defined(DECSTATION) || defined(FLAMINGO)
- /* no, it is not */
- dprintf("%s", "no console!\n");
- halt();
-#endif
- return 0;
- }
-
- /*
- * Remote console line
- */
- find_rconsole(&rcline);
-
- /*
- * Console always on unit 0. Fix if you need to
- */
- cnunit = 0;
-
-#if NBM > 0
- if (tube && screen_probe(0)) {
-
- /* associate screen to console iff */
- if (console == user_console)
- screen_console = cnunit | SCREEN_CONS_ENBL;
- cnline = SCREEN_LINE_KEYBOARD;
-
- /* mouse and keybd */
- tp = console_tty[SCREEN_LINE_KEYBOARD];
- tp->t_ispeed = B4800;
- tp->t_ospeed = B4800;
- tp->t_flags = TF_LITOUT|TF_EVENP|TF_ECHO|TF_XTABS|TF_CRMOD;
- tp->t_dev = SCREEN_LINE_KEYBOARD;
- (*console_param)(tp, SCREEN_LINE_KEYBOARD);
-
- tp = console_tty[SCREEN_LINE_POINTER];
- tp->t_ispeed = B4800;
- tp->t_ospeed = B4800;
- tp->t_flags = TF_LITOUT|TF_ODDP;
- tp->t_dev = SCREEN_LINE_POINTER;
- (*console_param)(tp, SCREEN_LINE_POINTER);
- /* console_scan will turn on carrier */
-
- } else {
-#endif NBM > 0
- /* use non-graphic console as console */
- cnline = CONSOLE_SERIAL_LINE_NO;
-
- tp = console_tty[cnline];
- tp->t_ispeed = B9600;
- tp->t_ospeed = B9600;
- tp->t_flags = TF_LITOUT|TF_EVENP|TF_ECHO|TF_XTABS|TF_CRMOD;
- (*console_softCAR)(cnunit, cnline, TRUE);
- console = cnline;
- tp->t_dev = console;
- (*console_param)(tp, SCREEN_LINE_OTHER);
-#if NBM > 0
- }
-
- /*
- * Enable rconsole interrupts for KDB
- */
- if (tube && rcline != cnline) {
- tp = console_tty[rcline];
- tp->t_ispeed = B9600;
- tp->t_ospeed = B9600;
- tp->t_flags = TF_LITOUT|TF_EVENP|TF_ECHO|TF_XTABS|TF_CRMOD;
- tp->t_dev = rcline;
- (*console_softCAR)(cnunit, rcline, TRUE);
- (*console_param)(tp, SCREEN_LINE_OTHER);
- } else
- rcline = 0;
-#endif NBM > 0
-}
-
-/*
- * Open routine
- */
-extern int
- cons_start(struct tty *),
- cons_stop(struct tty *, int),
- cons_mctl(struct tty *, int, int);
-
-cons_open(dev, flag, ior)
- int dev;
- int flag;
- io_req_t ior;
-{
- register struct tty *tp;
- register int ttyno;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
- if (ttyno >= NCONSTTY)
- return D_NO_SUCH_DEVICE;
- tp = console_tty[ttyno];
-
- /* But was it there at probe time */
- if (tp->t_addr == 0)
- return D_NO_SUCH_DEVICE;
-
- tp->t_start = cons_start;
- tp->t_stop = cons_stop;
- tp->t_mctl = cons_mctl;
-
-#if NBM > 0
- if (screen_captures(ttyno))
- screen_open(SCREEN_CONS_UNIT(), ttyno==SCREEN_LINE_KEYBOARD);
-#endif NBM > 0
-
- if ((tp->t_state & TS_ISOPEN) == 0) {
- if (tp->t_ispeed == 0) {
- tp->t_ispeed = DEFAULT_SPEED;
- tp->t_ospeed = DEFAULT_SPEED;
- tp->t_flags = DEFAULT_FLAGS;
- }
- tp->t_dev = dev;
- (*console_param)(tp, ttyno);
- }
-
- return (char_open(dev, tp, flag, ior));
-}
-
-
-/*
- * Close routine
- */
-cons_close(dev, flag)
- int dev;
-{
- register struct tty *tp;
- register int ttyno;
- spl_t s;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
-
-#if NBM > 0
- if (screen_captures(ttyno))
- screen_close(SCREEN_CONS_UNIT(), ttyno==SCREEN_LINE_KEYBOARD);
-#endif NBM > 0
-
- tp = console_tty[ttyno];
-
- s = spltty();
- simple_lock(&tp->t_lock);
-
- ttyclose(tp);
-
- simple_unlock(&tp->t_lock);
- splx(s);
-}
-
-cons_read(dev, ior)
- int dev;
- register io_req_t ior;
-{
- register struct tty *tp;
- register ttyno;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
-#if NBM > 0
- if (SCREEN_ISA_CONSOLE() && (ttyno == SCREEN_LINE_POINTER))
- return screen_read(SCREEN_CONS_UNIT(), ior);
-#endif NBM > 0
-
- tp = console_tty[ttyno];
- return char_read(tp, ior);
-}
-
-
-cons_write(dev, ior)
- int dev;
- register io_req_t ior;
-{
- register struct tty *tp;
- register ttyno;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
-#if NBM > 0
- if (screen_captures(ttyno))
- return screen_write(SCREEN_CONS_UNIT(), ior);
-#endif NBM > 0
-
- tp = console_tty[ttyno];
- return char_write(tp, ior);
-}
-
-/*
- * Start output on a line
- */
-cons_start(tp)
- register struct tty *tp;
-{
- spl_t s;
-
- s = spltty();
- if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP))
- goto out;
-
- if (tp->t_outq.c_cc == 0)
- goto out;
-
- tp->t_state |= TS_BUSY;
-
- (*console_start)(tp);
-
-out:
- splx(s);
-}
-
-/*
- * Stop output on a line.
- */
-cons_stop(tp, flag)
- register struct tty *tp;
-{
- register spl_t s;
-
- s = spltty();
- if (tp->t_state & TS_BUSY) {
- if ((tp->t_state&TS_TTSTOP)==0)
- tp->t_state |= TS_FLUSH;
- }
- splx(s);
-}
-
-
-/*
- * Modem control
- */
-cons_mctl(
- struct tty *tp,
- int bits,
- int how)
-{
- return (*console_mctl)(tp->t_dev, bits, how);
-}
-
-/*
- * Abnormal close
- */
-cons_portdeath(dev, port)
- int dev;
- mach_port_t port;
-{
- if (dev == user_console)
- dev = console;
- return (tty_portdeath(console_tty[dev], port));
-}
-
-/*
- * Get/Set status rotuines
- */
-io_return_t
-cons_get_status(dev, flavor, data, status_count)
- int dev;
- dev_flavor_t flavor;
- int * data; /* pointer to OUT array */
- unsigned int *status_count; /* out */
-{
- register struct tty *tp;
- register int ttyno;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
-
-#if NBM > 0
- if (screen_captures(ttyno) &&
- (screen_get_status(SCREEN_CONS_UNIT(),
- flavor, data, status_count) == D_SUCCESS))
- return D_SUCCESS;
-#endif NBM > 0
-
- tp = console_tty[ttyno];
-
- switch (flavor) {
- case TTY_MODEM:
- /* Take all bits */
- *data = (*console_mctl)(dev, -1, DMGET);
- *status_count = 1;
- break;
- default:
- return (tty_get_status(tp, flavor, data, status_count));
- }
- return (D_SUCCESS);
-}
-
-io_return_t
-cons_set_status(dev, flavor, data, status_count)
- int dev;
- dev_flavor_t flavor;
- int * data;
- unsigned int status_count;
-{
- register struct tty *tp;
- register int ttyno;
-
- if (dev == user_console)
- dev = console;
-
- ttyno = dev;
-
-#if NBM > 0
- if (screen_captures(ttyno) &&
- (screen_set_status(SCREEN_CONS_UNIT(),
- flavor, data, status_count) == D_SUCCESS))
- return D_SUCCESS;
-#endif NBM > 0
-
- tp = console_tty[ttyno];
-
- switch (flavor) {
- case TTY_MODEM:
- if (status_count < TTY_MODEM_COUNT)
- return (D_INVALID_OPERATION);
- (void) (*console_mctl)(dev, *data, DMSET);
- break;
-
- case TTY_SET_BREAK:
- (void) (*console_mctl)(dev, TM_BRK, DMBIS);
- break;
-
- case TTY_CLEAR_BREAK:
- (void) (*console_mctl)(dev, TM_BRK, DMBIC);
- break;
-
- case TTY_STATUS:
- {
- register int error = D_SUCCESS;
- struct tty_status *tsp;
-
- /*
- * Defend from noise. The cshell...
- */
- tsp = (struct tty_status *)data;
- if ((tsp->tt_ispeed != tp->t_ispeed) ||
- (tsp->tt_ospeed != tp->t_ospeed) ||
- (tsp->tt_breakc != tp->t_breakc) ||
- ((tsp->tt_flags & ~TF_HUPCLS) != tp->t_flags)) {
-
- error = tty_set_status(tp, flavor, data, status_count);
- if (error == 0) {
- spl_t s = spltty();
- tp->t_state &= ~(TS_BUSY|TS_FLUSH);
- (*console_param)(tp, ttyno);
- splx(s);
- }
- } else
- if (tsp->tt_flags & TF_HUPCLS)
- tp->t_state |= TS_HUPCLS;
- return (error);
- }
- default:
- return (tty_set_status(tp, flavor, data, status_count));
- }
- return (D_SUCCESS);
-}
-
-
-/*
- * A simple scheme to dispatch interrupts.
- *
- * This deals with the fairly common case where we get an
- * interrupt on each rx/tx character. A more elaborate
- * scheme [someday here too..] would handle instead many
- * characters per interrupt, perhaps using a DMA controller
- * or a large SILO. Note that it is also possible to simulate
- * a DMA chip with 'pseudo-dma' code that runs directly down
- * in the interrupt routine.
- */
-
-/*
- * We just received a character, ship it up for further processing.
- * Arguments are the tty number for which it is meant, a flag that
- * indicates a keyboard or mouse is potentially attached to that
- * tty (-1 if not), the character proper stripped down to 8 bits,
- * and an indication of any error conditions associated with the
- * receipt of the character.
- * We deal here with rconsole input handling and dispatching to
- * mouse or keyboard translation routines. cons_input() does
- * the rest.
- */
-#if MACH_KDB
-int l3break = 0x10; /* dear old ^P, we miss you so bad. */
-#endif MACH_KDB
-
-cons_simple_rint(ttyno, line, c, err)
- int line;
- int c;
-{
- /*
- * Rconsole. Drop in the debugger on break or ^P.
- * Otherwise pretend input came from keyboard.
- */
- if (rcline && ttyno == rcline) {
-#if MACH_KDB
- if ((err & CONS_ERR_BREAK) ||
- ((c & 0x7f) == l3break))
- return gimmeabreak();
-#endif /* MACH_KDB */
- ttyno = console;
- goto process_it;
- }
-
-#if NBM > 0
- if (screen_captures(line)) {
- if (line == SCREEN_LINE_POINTER)
- return mouse_input(SCREEN_CONS_UNIT(), c);
- if (line == SCREEN_LINE_KEYBOARD) {
- c = lk201_rint(SCREEN_CONS_UNIT(), c, FALSE, FALSE);
- if (c == -1)
- return; /* shift or bad char */
- }
- }
-#endif NBM > 0
-process_it:
- cons_input(ttyno, c, err);
-}
-
-/*
- * Send along a character on a tty. If we were waiting for
- * this char to complete the open procedure do so; check
- * for errors; if all is well proceed to ttyinput().
- */
-cons_input(ttyno, c, err)
-{
- register struct tty *tp;
-
- tp = console_tty[ttyno];
-
- if ((tp->t_state & TS_ISOPEN) == 0) {
- tt_open_wakeup(tp);
- return;
- }
- if (err) {
- if (err & CONS_ERR_OVERRUN)
- log(LOG_WARNING, "sl%d: silo overflow\n", ttyno);
-
- if (err & CONS_ERR_PARITY)
- if (((tp->t_flags & (TF_EVENP|TF_ODDP)) == TF_EVENP)
- || ((tp->t_flags & (TF_EVENP|TF_ODDP)) == TF_ODDP))
- return;
- if (err & CONS_ERR_BREAK) /* XXX autobaud XXX */
- c = tp->t_breakc;
- }
- ttyinput(c, tp);
-}
-
-/*
- * Transmission of a character is complete.
- * Return the next character or -1 if none.
- */
-cons_simple_tint(ttyno, all_sent)
- boolean_t all_sent;
-{
- register struct tty *tp;
-
- tp = console_tty[ttyno];
- if ((tp->t_addr == 0) || /* not probed --> stray */
- (tp->t_state & TS_TTSTOP))
- return -1;
-
- if (all_sent) {
- tp->t_state &= ~TS_BUSY;
- if (tp->t_state & TS_FLUSH)
- tp->t_state &= ~TS_FLUSH;
-
- cons_start(tp);
- }
-
- if (tp->t_outq.c_cc == 0 || (tp->t_state&TS_BUSY)==0)
- return -1;
-
- return getc(&tp->t_outq);
-}
-
-
-
-
-
-#endif /*NCONSTTY > 0*/
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