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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* PROM I/O backend
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/obpdefs.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include <mdb/mdb_modapi.h>
#include <mdb/mdb_io_impl.h>
#include <kmdb/kmdb_promif.h>
#include <kmdb/kmdb_io.h>
#include <mdb/mdb_debug.h>
#include <mdb/mdb_err.h>
#include <mdb/mdb.h>
#define PIO_FL_TIO_READ 0x001
typedef struct pio_data {
char pio_name[MAXPATHLEN];
ihandle_t pio_fd;
uint_t pio_flags;
struct termios pio_ti;
} pio_data_t;
static pid_t pio_pgrp;
static ssize_t
pio_read(mdb_io_t *io, void *buf, size_t nbytes)
{
pio_data_t *pdp = io->io_data;
if (io->io_next == NULL)
return (kmdb_prom_read(buf, nbytes, &pdp->pio_ti));
return (IOP_READ(io->io_next, buf, nbytes));
}
static ssize_t
pio_write(mdb_io_t *io, const void *buf, size_t nbytes)
{
pio_data_t *pdp = io->io_data;
if (io->io_next == NULL)
return (kmdb_prom_write(buf, nbytes, &pdp->pio_ti));
return (IOP_WRITE(io->io_next, buf, nbytes));
}
static off64_t
pio_seek(mdb_io_t *io, off64_t offset, int whence)
{
if (io->io_next == NULL)
return (set_errno(ENOTSUP));
return (IOP_SEEK(io->io_next, offset, whence));
}
static int
pio_ctl(mdb_io_t *io, int req, void *arg)
{
pio_data_t *pdp = io->io_data;
if (io->io_next != NULL)
return (IOP_CTL(io->io_next, req, arg));
switch (req) {
case TIOCGWINSZ:
return (kmdb_prom_term_ctl(TIOCGWINSZ, arg));
case TCGETS: {
struct termios *ti = arg;
if (!(pdp->pio_flags & PIO_FL_TIO_READ)) {
(void) kmdb_prom_term_ctl(TCGETS, &pdp->pio_ti);
pdp->pio_flags |= PIO_FL_TIO_READ;
}
bcopy(&pdp->pio_ti, ti, sizeof (struct termios));
mdb_dprintf(MDB_DBG_CMDBUF, "pio_ctl: gets: i: 0%o o: 0%o c: "
"0%o l: 0%o\n", ti->c_iflag, ti->c_oflag, ti->c_cflag,
ti->c_lflag);
return (0);
}
case TCSETSW: {
struct termios *ti = arg;
mdb_dprintf(MDB_DBG_CMDBUF, "pio_ctl: setsw: i: 0%o o: 0%o c: "
"0%o l: 0%o\n", ti->c_iflag, ti->c_oflag, ti->c_cflag,
ti->c_lflag);
bcopy(ti, &pdp->pio_ti, sizeof (struct termios));
return (0);
}
case TIOCSPGRP:
pio_pgrp = *(pid_t *)arg;
mdb_dprintf(MDB_DBG_CMDBUF, "pio_ctl: spgrp: %ld\n",
(long)pio_pgrp);
return (0);
case TIOCGPGRP:
mdb_dprintf(MDB_DBG_CMDBUF, "pio_ctl: gpgrp: %ld\n",
(long)pio_pgrp);
*(pid_t *)arg = pio_pgrp;
return (0);
case MDB_IOC_CTTY:
mdb_dprintf(MDB_DBG_CMDBUF, "pio_ctl: ignoring MDB_IOC_CTTY\n");
return (0);
case MDB_IOC_GETFD:
return (set_errno(ENOTSUP));
default:
warn("Unknown ioctl %d\n", req);
return (set_errno(EINVAL));
}
}
void
pio_close(mdb_io_t *io)
{
pio_data_t *pdp = io->io_data;
mdb_free(pdp, sizeof (pio_data_t));
}
static const char *
pio_name(mdb_io_t *io)
{
pio_data_t *pdp = io->io_data;
if (io->io_next == NULL)
return (pdp->pio_name);
return (IOP_NAME(io->io_next));
}
static const mdb_io_ops_t promio_ops = {
pio_read,
pio_write,
pio_seek,
pio_ctl,
pio_close,
pio_name,
no_io_link,
no_io_unlink,
no_io_setattr,
no_io_suspend,
no_io_resume
};
mdb_io_t *
kmdb_promio_create(char *name)
{
mdb_io_t *io;
pio_data_t *pdp;
ihandle_t hdl = kmdb_prom_get_handle(name);
if (hdl == -1)
return (NULL);
io = mdb_zalloc(sizeof (mdb_io_t), UM_SLEEP);
pdp = mdb_zalloc(sizeof (pio_data_t), UM_SLEEP);
(void) strlcpy(pdp->pio_name, name, MAXPATHLEN);
pdp->pio_fd = hdl;
#ifdef __sparc
pdp->pio_ti.c_oflag |= ONLCR;
pdp->pio_ti.c_iflag |= ICRNL;
#endif
pdp->pio_ti.c_lflag |= ECHO;
io->io_data = pdp;
io->io_ops = &promio_ops;
return (io);
}
char
kmdb_getchar(void)
{
char c;
while (IOP_READ(mdb.m_term, &c, 1) != 1)
continue;
if (isprint(c) && c != '\n')
mdb_iob_printf(mdb.m_out, "%c", c);
mdb_iob_printf(mdb.m_out, "\n");
return (c);
}
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