/* Remote serial interface for local (hardwired) serial ports for GO32.
- Copyright 1992, 1993, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1992-1993, 2000-2001, 2007-2012 Free Software
+ Foundation, Inc.
Contributed by Nigel Stephens, Algorithmics Ltd. (nigel@algor.co.uk).
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdbcmd.h"
static int cnts[NCNT];
static char *cntnames[NCNT] =
{
- /* h/w interrupt counts. */
+ /* h/w interrupt counts. */
"mlsc", "nopend", "txrdy", "?3",
"rxrdy", "?5", "rls", "?7",
"?8", "?9", "?a", "?b",
"rxtout", "?d", "?e", "?f",
- /* s/w counts. */
+ /* s/w counts. */
"rxcnt", "txcnt", "stray", "swoflo"
};
#define COUNT(x)
#endif
-/* Main interrupt controller port addresses. */
+/* Main interrupt controller port addresses. */
#define ICU_BASE 0x20
#define ICU_OCW2 (ICU_BASE + 0)
#define ICU_MASK (ICU_BASE + 1)
-/* Original interrupt controller mask register. */
+/* Original interrupt controller mask register. */
unsigned char icu_oldmask;
-/* Maximum of 8 interrupts (we don't handle the slave icu yet). */
+/* Maximum of 8 interrupts (we don't handle the slave icu yet). */
#define NINTR 8
static struct intrupt
break;
case IIR_NOPEND:
- /* no more pending interrupts, all done */
+ /* No more pending interrupts, all done. */
return;
default:
- /* unexpected interrupt, ignore */
+ /* Unexpected interrupt, ignore. */
break;
}
COUNT (iir);
vec = 0x08 + irq;
isr = isrs[irq];
- /* setup real mode handler */
+ /* Setup real mode handler. */
_go32_dpmi_get_real_mode_interrupt_vector (vec, &intr->old_rmhandler);
intr->new_rmhandler.pm_selector = _go32_my_cs ();
return 0;
}
- /* setup protected mode handler */
+ /* Setup protected mode handler. */
_go32_dpmi_get_protected_mode_interrupt_vector (vec, &intr->old_pmhandler);
intr->new_pmhandler.pm_selector = _go32_my_cs ();
return 0;
}
- /* setup interrupt controller mask */
+ /* Setup interrupt controller mask. */
disable ();
outportb (ICU_MASK, inportb (ICU_MASK) & ~(1 << irq));
enable ();
irq = intr - intrupts;
vec = 0x08 + irq;
- /* restore old interrupt mask bit */
+ /* Restore old interrupt mask bit. */
mask = 1 << irq;
disable ();
outportb (ICU_MASK, inportb (ICU_MASK) | (mask & icu_oldmask));
enable ();
- /* remove real mode handler */
+ /* Remove real mode handler. */
_go32_dpmi_set_real_mode_interrupt_vector (vec, &intr->old_rmhandler);
_go32_dpmi_free_real_mode_callback (&intr->new_rmhandler);
- /* remove protected mode handler */
+ /* Remove protected mode handler. */
_go32_dpmi_set_protected_mode_interrupt_vector (vec, &intr->old_pmhandler);
_go32_dpmi_free_iret_wrapper (&intr->new_pmhandler);
intr->inuse = 0;
port = &ports[fd];
if (port->refcnt++ > 0)
{
- /* Device already opened another user. Just point at it. */
+ /* Device already opened another user. Just point at it. */
scb->fd = fd;
return 0;
}
- /* force access to ID reg */
+ /* Force access to ID reg. */
outb (port, com_cfcr, 0);
outb (port, com_iir, 0);
for (i = 0; i < 17; i++)
return -1;
ok:
- /* disable all interrupts in chip */
+ /* Disable all interrupts in chip. */
outb (port, com_ier, 0);
- /* tentatively enable 16550 fifo, and see if it responds */
+ /* Tentatively enable 16550 fifo, and see if it responds. */
outb (port, com_fifo,
FIFO_ENABLE | FIFO_RCV_RST | FIFO_XMT_RST | FIFO_TRIGGER);
sleep (1);
port->fifo = ((inb (port, com_iir) & IIR_FIFO_MASK) == IIR_FIFO_MASK);
- /* clear pending status reports. */
+ /* clear pending status reports. */
(void) inb (port, com_lsr);
(void) inb (port, com_msr);
- /* enable external interrupt gate (to avoid floating IRQ) */
+ /* Enable external interrupt gate (to avoid floating IRQ). */
outb (port, com_mcr, MCR_IENABLE);
- /* hook up interrupt handler and initialise icu */
+ /* Hook up interrupt handler and initialise icu. */
port->intrupt = dos_hookirq (port->irq);
if (!port->intrupt)
{
port->intrupt->port = port;
scb->fd = fd;
- /* clear rx buffer, tx busy flag and overflow count */
+ /* Clear rx buffer, tx busy flag and overflow count. */
port->first = port->count = 0;
port->txbusy = 0;
port->oflo = 0;
- /* set default baud rate and mode: 9600,8,n,1 */
+ /* Set default baud rate and mode: 9600,8,n,1 */
i = dos_baudconv (port->baudrate = 9600);
outb (port, com_cfcr, CFCR_DLAB);
outb (port, com_dlbl, i & 0xff);
outb (port, com_dlbh, i >> 8);
outb (port, com_cfcr, CFCR_8BITS);
- /* enable all interrupts */
+ /* Enable all interrupts. */
outb (port, com_ier, IER_ETXRDY | IER_ERXRDY | IER_ERLS | IER_EMSC);
- /* enable DTR & RTS */
+ /* Enable DTR & RTS. */
outb (port, com_mcr, MCR_DTR | MCR_RTS | MCR_IENABLE);
enable ();
if (!(intrupt = port->intrupt))
return;
- /* disable interrupts, fifo, flow control */
+ /* Disable interrupts, fifo, flow control. */
disable ();
port->intrupt = 0;
intrupt->port = 0;
outb (port, com_ier, 0);
enable ();
- /* unhook handler, and disable interrupt gate */
+ /* Unhook handler, and disable interrupt gate. */
dos_unhookirq (intrupt);
outb (port, com_mcr, 0);
- /* Check for overflow errors */
+ /* Check for overflow errors. */
if (port->oflo)
{
fprintf_unfiltered (gdb_stderr,
static void
dos_raw (struct serial *scb)
{
- /* Always in raw mode */
+ /* Always in raw mode. */
}
static int
return (serial_ttystate) state;
}
+static serial_ttystate
+dos_copy_tty_state (struct serial *scb, serial_ttystate ttystate)
+{
+ struct dos_ttystate *state;
+
+ state = (struct dos_ttystate *) xmalloc (sizeof *state);
+ *state = *(struct dos_ttystate *) ttystate;
+
+ return (serial_ttystate) state;
+}
+
static int
dos_set_tty_state (struct serial *scb, serial_ttystate ttystate)
{
dos_flush_input (struct serial *scb)
{
struct dos_ttystate *port = &ports[scb->fd];
+
disable ();
port->first = port->count = 0;
if (port->fifo)
dos_print_tty_state (struct serial *scb, serial_ttystate ttystate,
struct ui_file *stream)
{
- /* Nothing to print */
+ /* Nothing to print. */
return;
}
if (rate <= 0)
return -1;
-#define divrnd(n, q) (((n) * 2 / (q) + 1) / 2) /* divide and round off */
+#define divrnd(n, q) (((n) * 2 / (q) + 1) / 2) /* Divide and round off. */
x = divrnd (COMTICK, rate);
if (x <= 0)
return -1;
while (len > 0)
{
- /* send the data, fifosize bytes at a time */
+ /* Send the data, fifosize bytes at a time. */
cnt = fifosize > len ? len : fifosize;
port->txbusy = 1;
/* Francisco Pastor <fpastor.etra-id@etra.es> says OUTSB messes
#ifdef DOS_STATS
cnts[CNT_TX] += cnt;
#endif
- /* wait for transmission to complete (max 1 sec) */
+ /* Wait for transmission to complete (max 1 sec). */
then = rawclock () + RAWHZ;
while (port->txbusy)
{
0,
dos_open,
dos_close,
+ NULL, /* fdopen, not implemented */
dos_readchar,
dos_write,
dos_noop, /* flush output */
dos_sendbreak,
dos_raw,
dos_get_tty_state,
+ dos_copy_tty_state,
dos_set_tty_state,
dos_print_tty_state,
dos_noflush_set_tty_state,
dos_setbaudrate,
dos_setstopbits,
- dos_noop, /* wait for output to drain */
- (void (*)(struct serial *, int))NULL /* change into async mode */
+ dos_noop, /* Wait for output to drain. */
+ (void (*)(struct serial *, int))NULL /* Change into async mode. */
};
+int
+gdb_pipe (int pdes[2])
+{
+ /* No support for pipes. */
+ errno = ENOSYS;
+ return -1;
+}
static void
dos_info (char *arg, int from_tty)
#endif
}
+/* -Wmissing-prototypes */
+extern initialize_file_ftype _initialize_ser_dos;
void
_initialize_ser_dos (void)
{
serial_add_interface (&dos_ops);
- /* Save original interrupt mask register. */
+ /* Save original interrupt mask register. */
icu_oldmask = inportb (ICU_MASK);
- /* Mark fixed motherboard irqs as inuse. */
+ /* Mark fixed motherboard irqs as inuse. */
intrupts[0].inuse = /* timer tick */
intrupts[1].inuse = /* keyboard */
intrupts[2].inuse = 1; /* slave icu */
- deprecated_add_show_from_set
- (add_set_cmd ("com1base", class_obscure, var_zinteger,
- (char *) &ports[0].base,
- "Set COM1 base i/o port address.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com1irq", class_obscure, var_zinteger,
- (char *) &ports[0].irq,
- "Set COM1 interrupt request.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com2base", class_obscure, var_zinteger,
- (char *) &ports[1].base,
- "Set COM2 base i/o port address.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com2irq", class_obscure, var_zinteger,
- (char *) &ports[1].irq,
- "Set COM2 interrupt request.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com3base", class_obscure, var_zinteger,
- (char *) &ports[2].base,
- "Set COM3 base i/o port address.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com3irq", class_obscure, var_zinteger,
- (char *) &ports[2].irq,
- "Set COM3 interrupt request.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com4base", class_obscure, var_zinteger,
- (char *) &ports[3].base,
- "Set COM4 base i/o port address.",
- &setlist),
- &showlist);
-
- deprecated_add_show_from_set
- (add_set_cmd ("com4irq", class_obscure, var_zinteger,
- (char *) &ports[3].irq,
- "Set COM4 interrupt request.",
- &setlist),
- &showlist);
+ add_setshow_zinteger_cmd ("com1base", class_obscure, &ports[0].base, _("\
+Set COM1 base i/o port address."), _("\
+Show COM1 base i/o port address."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com1irq", class_obscure, &ports[0].irq, _("\
+Set COM1 interrupt request."), _("\
+Show COM1 interrupt request."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com2base", class_obscure, &ports[1].base, _("\
+Set COM2 base i/o port address."), _("\
+Show COM2 base i/o port address."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com2irq", class_obscure, &ports[1].irq, _("\
+Set COM2 interrupt request."), _("\
+Show COM2 interrupt request."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com3base", class_obscure, &ports[2].base, _("\
+Set COM3 base i/o port address."), _("\
+Show COM3 base i/o port address."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com3irq", class_obscure, &ports[2].irq, _("\
+Set COM3 interrupt request."), _("\
+Show COM3 interrupt request."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com4base", class_obscure, &ports[3].base, _("\
+Set COM4 base i/o port address."), _("\
+Show COM4 base i/o port address."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
+
+ add_setshow_zinteger_cmd ("com4irq", class_obscure, &ports[3].irq, _("\
+Set COM4 interrupt request."), _("\
+Show COM4 interrupt request."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
add_info ("serial", dos_info,
_("Print DOS serial port status."));