6472ac3d8a
The SYSCTL_NODE macro defines a list that stores all child-elements of that node. If there's no SYSCTL_DECL macro anywhere else, there's no reason why it shouldn't be static.
471 lines
9.7 KiB
C
471 lines
9.7 KiB
C
/*-
|
|
* Copyright (C) 2003,2004
|
|
* Hidetoshi Shimokawa. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
*
|
|
* This product includes software developed by Hidetoshi Shimokawa.
|
|
*
|
|
* 4. Neither the name of the author nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kdb.h>
|
|
#include <gdb/gdb.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/types.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/cons.h>
|
|
#include <sys/consio.h>
|
|
#include <sys/tty.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/priv.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/ucred.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <dev/dcons/dcons.h>
|
|
#include <dev/dcons/dcons_os.h>
|
|
|
|
#include <ddb/ddb.h>
|
|
#include <sys/reboot.h>
|
|
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_param.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include "opt_dcons.h"
|
|
#include "opt_kdb.h"
|
|
#include "opt_gdb.h"
|
|
#include "opt_ddb.h"
|
|
|
|
|
|
#ifndef DCONS_POLL_HZ
|
|
#define DCONS_POLL_HZ 25
|
|
#endif
|
|
|
|
#ifndef DCONS_BUF_SIZE
|
|
#define DCONS_BUF_SIZE (16*1024)
|
|
#endif
|
|
|
|
#ifndef DCONS_FORCE_CONSOLE
|
|
#define DCONS_FORCE_CONSOLE 0 /* Mostly for FreeBSD-4/DragonFly */
|
|
#endif
|
|
|
|
#ifndef KLD_MODULE
|
|
static char bssbuf[DCONS_BUF_SIZE]; /* buf in bss */
|
|
#endif
|
|
|
|
/* global data */
|
|
static struct dcons_global dg;
|
|
struct dcons_global *dcons_conf;
|
|
static int poll_hz = DCONS_POLL_HZ;
|
|
|
|
static struct dcons_softc sc[DCONS_NPORT];
|
|
|
|
static SYSCTL_NODE(_kern, OID_AUTO, dcons, CTLFLAG_RD, 0, "Dumb Console");
|
|
SYSCTL_INT(_kern_dcons, OID_AUTO, poll_hz, CTLFLAG_RW, &poll_hz, 0,
|
|
"dcons polling rate");
|
|
|
|
static int drv_init = 0;
|
|
static struct callout dcons_callout;
|
|
struct dcons_buf *dcons_buf; /* for local dconschat */
|
|
|
|
static void dcons_timeout(void *);
|
|
static int dcons_drv_init(int);
|
|
|
|
static cn_probe_t dcons_cnprobe;
|
|
static cn_init_t dcons_cninit;
|
|
static cn_term_t dcons_cnterm;
|
|
static cn_getc_t dcons_cngetc;
|
|
static cn_putc_t dcons_cnputc;
|
|
|
|
CONSOLE_DRIVER(dcons);
|
|
|
|
#if defined(GDB)
|
|
static gdb_probe_f dcons_dbg_probe;
|
|
static gdb_init_f dcons_dbg_init;
|
|
static gdb_term_f dcons_dbg_term;
|
|
static gdb_getc_f dcons_dbg_getc;
|
|
static gdb_putc_f dcons_dbg_putc;
|
|
|
|
GDB_DBGPORT(dcons, dcons_dbg_probe, dcons_dbg_init, dcons_dbg_term,
|
|
dcons_dbg_getc, dcons_dbg_putc);
|
|
|
|
extern struct gdb_dbgport *gdb_cur;
|
|
#endif
|
|
|
|
static tsw_outwakeup_t dcons_outwakeup;
|
|
|
|
static struct ttydevsw dcons_ttydevsw = {
|
|
.tsw_flags = TF_NOPREFIX,
|
|
.tsw_outwakeup = dcons_outwakeup,
|
|
};
|
|
|
|
#if (defined(GDB) || defined(DDB))
|
|
static int
|
|
dcons_check_break(struct dcons_softc *dc, int c)
|
|
{
|
|
|
|
if (c < 0)
|
|
return (c);
|
|
|
|
#ifdef GDB
|
|
if ((dc->flags & DC_GDB) != 0 && gdb_cur == &dcons_gdb_dbgport)
|
|
kdb_alt_break_gdb(c, &dc->brk_state);
|
|
else
|
|
#endif
|
|
kdb_alt_break(c, &dc->brk_state);
|
|
|
|
return (c);
|
|
}
|
|
#else
|
|
#define dcons_check_break(dc, c) (c)
|
|
#endif
|
|
|
|
static int
|
|
dcons_os_checkc_nopoll(struct dcons_softc *dc)
|
|
{
|
|
int c;
|
|
|
|
if (dg.dma_tag != NULL)
|
|
bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD);
|
|
|
|
c = dcons_check_break(dc, dcons_checkc(dc));
|
|
|
|
if (dg.dma_tag != NULL)
|
|
bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD);
|
|
|
|
return (c);
|
|
}
|
|
|
|
static int
|
|
dcons_os_checkc(struct dcons_softc *dc)
|
|
{
|
|
EVENTHANDLER_INVOKE(dcons_poll, 0);
|
|
return (dcons_os_checkc_nopoll(dc));
|
|
}
|
|
|
|
static void
|
|
dcons_os_putc(struct dcons_softc *dc, int c)
|
|
{
|
|
if (dg.dma_tag != NULL)
|
|
bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE);
|
|
|
|
dcons_putc(dc, c);
|
|
|
|
if (dg.dma_tag != NULL)
|
|
bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE);
|
|
}
|
|
|
|
static void
|
|
dcons_outwakeup(struct tty *tp)
|
|
{
|
|
struct dcons_softc *dc;
|
|
char ch;
|
|
|
|
dc = tty_softc(tp);
|
|
|
|
while (ttydisc_getc(tp, &ch, sizeof ch) != 0)
|
|
dcons_os_putc(dc, ch);
|
|
}
|
|
|
|
static void
|
|
dcons_timeout(void *v)
|
|
{
|
|
struct tty *tp;
|
|
struct dcons_softc *dc;
|
|
int i, c, polltime;
|
|
|
|
for (i = 0; i < DCONS_NPORT; i ++) {
|
|
dc = &sc[i];
|
|
tp = dc->tty;
|
|
|
|
tty_lock(tp);
|
|
while ((c = dcons_os_checkc_nopoll(dc)) != -1)
|
|
ttydisc_rint(tp, c, 0);
|
|
ttydisc_rint_done(tp);
|
|
tty_unlock(tp);
|
|
}
|
|
polltime = hz / poll_hz;
|
|
if (polltime < 1)
|
|
polltime = 1;
|
|
callout_reset(&dcons_callout, polltime, dcons_timeout, tp);
|
|
}
|
|
|
|
static void
|
|
dcons_cnprobe(struct consdev *cp)
|
|
{
|
|
sprintf(cp->cn_name, "dcons");
|
|
#if DCONS_FORCE_CONSOLE
|
|
cp->cn_pri = CN_REMOTE;
|
|
#else
|
|
cp->cn_pri = CN_NORMAL;
|
|
#endif
|
|
}
|
|
|
|
static void
|
|
dcons_cninit(struct consdev *cp)
|
|
{
|
|
dcons_drv_init(0);
|
|
cp->cn_arg = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */
|
|
}
|
|
|
|
static void
|
|
dcons_cnterm(struct consdev *cp)
|
|
{
|
|
}
|
|
|
|
static int
|
|
dcons_cngetc(struct consdev *cp)
|
|
{
|
|
struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg;
|
|
return (dcons_os_checkc(dc));
|
|
}
|
|
|
|
static void
|
|
dcons_cnputc(struct consdev *cp, int c)
|
|
{
|
|
struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg;
|
|
dcons_os_putc(dc, c);
|
|
}
|
|
|
|
static int
|
|
dcons_drv_init(int stage)
|
|
{
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
quad_t addr, size;
|
|
#endif
|
|
|
|
if (drv_init)
|
|
return(drv_init);
|
|
|
|
drv_init = -1;
|
|
|
|
bzero(&dg, sizeof(dg));
|
|
dcons_conf = &dg;
|
|
dg.cdev = &dcons_consdev;
|
|
dg.buf = NULL;
|
|
dg.size = DCONS_BUF_SIZE;
|
|
|
|
#if defined(__i386__) || defined(__amd64__)
|
|
if (getenv_quad("dcons.addr", &addr) > 0 &&
|
|
getenv_quad("dcons.size", &size) > 0) {
|
|
#ifdef __i386__
|
|
vm_paddr_t pa;
|
|
/*
|
|
* Allow read/write access to dcons buffer.
|
|
*/
|
|
for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE)
|
|
*vtopte(KERNBASE + pa) |= PG_RW;
|
|
invltlb();
|
|
#endif
|
|
/* XXX P to V */
|
|
dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr);
|
|
dg.size = size;
|
|
if (dcons_load_buffer(dg.buf, dg.size, sc) < 0)
|
|
dg.buf = NULL;
|
|
}
|
|
#endif
|
|
if (dg.buf != NULL)
|
|
goto ok;
|
|
|
|
#ifndef KLD_MODULE
|
|
if (stage == 0) { /* XXX or cold */
|
|
/*
|
|
* DCONS_FORCE_CONSOLE == 1 and statically linked.
|
|
* called from cninit(). can't use contigmalloc yet .
|
|
*/
|
|
dg.buf = (struct dcons_buf *) bssbuf;
|
|
dcons_init(dg.buf, dg.size, sc);
|
|
} else
|
|
#endif
|
|
{
|
|
/*
|
|
* DCONS_FORCE_CONSOLE == 0 or kernel module case.
|
|
* if the module is loaded after boot,
|
|
* bssbuf could be non-continuous.
|
|
*/
|
|
dg.buf = (struct dcons_buf *) contigmalloc(dg.size,
|
|
M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul);
|
|
if (dg.buf == NULL)
|
|
return (-1);
|
|
dcons_init(dg.buf, dg.size, sc);
|
|
}
|
|
|
|
ok:
|
|
dcons_buf = dg.buf;
|
|
|
|
drv_init = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
dcons_attach_port(int port, char *name, int flags)
|
|
{
|
|
struct dcons_softc *dc;
|
|
struct tty *tp;
|
|
|
|
dc = &sc[port];
|
|
tp = tty_alloc(&dcons_ttydevsw, dc);
|
|
dc->flags = flags;
|
|
dc->tty = tp;
|
|
tty_init_console(tp, 0);
|
|
tty_makedev(tp, NULL, "%s", name);
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
dcons_attach(void)
|
|
{
|
|
int polltime;
|
|
|
|
dcons_attach_port(DCONS_CON, "dcons", 0);
|
|
dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB);
|
|
callout_init(&dcons_callout, CALLOUT_MPSAFE);
|
|
polltime = hz / poll_hz;
|
|
if (polltime < 1)
|
|
polltime = 1;
|
|
callout_reset(&dcons_callout, polltime, dcons_timeout, NULL);
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
dcons_detach(int port)
|
|
{
|
|
struct tty *tp;
|
|
struct dcons_softc *dc;
|
|
|
|
dc = &sc[port];
|
|
tp = dc->tty;
|
|
|
|
tty_lock(tp);
|
|
tty_rel_gone(tp);
|
|
|
|
return(0);
|
|
}
|
|
|
|
static int
|
|
dcons_modevent(module_t mode, int type, void *data)
|
|
{
|
|
int err = 0, ret;
|
|
|
|
switch (type) {
|
|
case MOD_LOAD:
|
|
ret = dcons_drv_init(1);
|
|
if (ret != -1)
|
|
dcons_attach();
|
|
if (ret == 0) {
|
|
dcons_cnprobe(&dcons_consdev);
|
|
dcons_cninit(&dcons_consdev);
|
|
cnadd(&dcons_consdev);
|
|
}
|
|
break;
|
|
case MOD_UNLOAD:
|
|
printf("dcons: unload\n");
|
|
if (drv_init == 1) {
|
|
callout_stop(&dcons_callout);
|
|
cnremove(&dcons_consdev);
|
|
dcons_detach(DCONS_CON);
|
|
dcons_detach(DCONS_GDB);
|
|
dg.buf->magic = 0;
|
|
|
|
contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF);
|
|
}
|
|
|
|
break;
|
|
case MOD_SHUTDOWN:
|
|
#if 0 /* Keep connection after halt */
|
|
dg.buf->magic = 0;
|
|
#endif
|
|
break;
|
|
default:
|
|
err = EOPNOTSUPP;
|
|
break;
|
|
}
|
|
return(err);
|
|
}
|
|
|
|
#if defined(GDB)
|
|
/* Debugger interface */
|
|
|
|
static int
|
|
dcons_os_getc(struct dcons_softc *dc)
|
|
{
|
|
int c;
|
|
|
|
while ((c = dcons_os_checkc(dc)) == -1);
|
|
|
|
return (c & 0xff);
|
|
}
|
|
|
|
static int
|
|
dcons_dbg_probe(void)
|
|
{
|
|
int dcons_gdb;
|
|
|
|
if (getenv_int("dcons_gdb", &dcons_gdb) == 0)
|
|
return (-1);
|
|
return (dcons_gdb);
|
|
}
|
|
|
|
static void
|
|
dcons_dbg_init(void)
|
|
{
|
|
}
|
|
|
|
static void
|
|
dcons_dbg_term(void)
|
|
{
|
|
}
|
|
|
|
static void
|
|
dcons_dbg_putc(int c)
|
|
{
|
|
struct dcons_softc *dc = &sc[DCONS_GDB];
|
|
dcons_os_putc(dc, c);
|
|
}
|
|
|
|
static int
|
|
dcons_dbg_getc(void)
|
|
{
|
|
struct dcons_softc *dc = &sc[DCONS_GDB];
|
|
return (dcons_os_getc(dc));
|
|
}
|
|
#endif
|
|
|
|
DEV_MODULE(dcons, dcons_modevent, NULL);
|
|
MODULE_VERSION(dcons, DCONS_VERSION);
|