2005-01-06 23:35:40 +00:00
|
|
|
/*-
|
1994-05-24 10:09:53 +00:00
|
|
|
* Copyright (c) 1992, 1993
|
|
|
|
* The Regents of the University of California. All rights reserved.
|
|
|
|
*
|
|
|
|
* This software was developed by the Computer Systems Engineering group
|
|
|
|
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
|
|
|
|
* contributed to Berkeley.
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
* 4. Neither the name of the University 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.
|
|
|
|
*
|
|
|
|
* @(#)subr_autoconf.c 8.1 (Berkeley) 6/10/93
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
2003-06-11 00:56:59 +00:00
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
2008-07-19 12:12:54 +00:00
|
|
|
#include "opt_ddb.h"
|
|
|
|
|
1994-05-24 10:09:53 +00:00
|
|
|
#include <sys/param.h>
|
1997-09-21 22:00:25 +00:00
|
|
|
#include <sys/kernel.h>
|
2008-07-19 19:08:35 +00:00
|
|
|
#include <sys/linker.h>
|
2006-07-19 18:53:56 +00:00
|
|
|
#include <sys/lock.h>
|
|
|
|
#include <sys/mutex.h>
|
1997-09-21 22:00:25 +00:00
|
|
|
#include <sys/systm.h>
|
1994-05-24 10:09:53 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Autoconfiguration subroutines.
|
|
|
|
*/
|
|
|
|
|
1997-09-21 22:00:25 +00:00
|
|
|
/*
|
|
|
|
* "Interrupt driven config" functions.
|
|
|
|
*/
|
2000-05-26 02:09:24 +00:00
|
|
|
static TAILQ_HEAD(, intr_config_hook) intr_config_hook_list =
|
1997-09-21 22:00:25 +00:00
|
|
|
TAILQ_HEAD_INITIALIZER(intr_config_hook_list);
|
2006-07-19 18:53:56 +00:00
|
|
|
static struct mtx intr_config_hook_lock;
|
|
|
|
MTX_SYSINIT(intr_config_hook, &intr_config_hook_lock, "intr config", MTX_DEF);
|
1997-09-21 22:00:25 +00:00
|
|
|
|
|
|
|
/* ARGSUSED */
|
2002-03-19 21:25:46 +00:00
|
|
|
static void run_interrupt_driven_config_hooks(void *dummy);
|
2006-07-19 18:53:56 +00:00
|
|
|
|
2008-07-19 19:08:35 +00:00
|
|
|
/*
|
|
|
|
* If we wait too long for an interrupt-driven config hook to return, print
|
|
|
|
* a diagnostic.
|
|
|
|
*/
|
|
|
|
#define WARNING_INTERVAL_SECS 60
|
|
|
|
static void
|
|
|
|
run_interrupt_driven_config_hooks_warning(int warned)
|
|
|
|
{
|
|
|
|
struct intr_config_hook *hook_entry;
|
|
|
|
char namebuf[64];
|
|
|
|
long offset;
|
|
|
|
|
|
|
|
printf("run_interrupt_driven_hooks: still waiting after %d seconds "
|
|
|
|
"for", warned * WARNING_INTERVAL_SECS);
|
|
|
|
TAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links) {
|
|
|
|
if (linker_search_symbol_name((caddr_t)hook_entry->ich_func,
|
|
|
|
namebuf, sizeof(namebuf), &offset) == 0)
|
|
|
|
printf(" %s", namebuf);
|
|
|
|
else
|
|
|
|
printf(" %p", hook_entry->ich_func);
|
|
|
|
}
|
|
|
|
printf("\n");
|
|
|
|
}
|
|
|
|
|
1997-09-21 22:00:25 +00:00
|
|
|
static void
|
|
|
|
run_interrupt_driven_config_hooks(dummy)
|
|
|
|
void *dummy;
|
|
|
|
{
|
1999-09-26 18:48:53 +00:00
|
|
|
struct intr_config_hook *hook_entry, *next_entry;
|
2008-07-19 19:08:35 +00:00
|
|
|
int warned;
|
1997-09-21 22:00:25 +00:00
|
|
|
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_lock(&intr_config_hook_lock);
|
|
|
|
TAILQ_FOREACH_SAFE(hook_entry, &intr_config_hook_list, ich_links,
|
|
|
|
next_entry) {
|
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
1999-09-26 18:48:53 +00:00
|
|
|
(*hook_entry->ich_func)(hook_entry->ich_arg);
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_lock(&intr_config_hook_lock);
|
1997-09-21 22:00:25 +00:00
|
|
|
}
|
|
|
|
|
2008-07-19 19:08:35 +00:00
|
|
|
warned = 0;
|
1999-09-26 18:48:53 +00:00
|
|
|
while (!TAILQ_EMPTY(&intr_config_hook_list)) {
|
2008-07-19 19:08:35 +00:00
|
|
|
if (msleep(&intr_config_hook_list, &intr_config_hook_lock,
|
|
|
|
PCONFIG, "conifhk", WARNING_INTERVAL_SECS * hz) ==
|
|
|
|
EWOULDBLOCK && warned < 5) {
|
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
|
|
|
warned++;
|
|
|
|
run_interrupt_driven_config_hooks_warning(warned);
|
|
|
|
mtx_lock(&intr_config_hook_lock);
|
|
|
|
}
|
1997-09-21 22:00:25 +00:00
|
|
|
}
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
1997-09-21 22:00:25 +00:00
|
|
|
}
|
|
|
|
SYSINIT(intr_config_hooks, SI_SUB_INT_CONFIG_HOOKS, SI_ORDER_FIRST,
|
2008-03-16 10:58:09 +00:00
|
|
|
run_interrupt_driven_config_hooks, NULL);
|
1997-09-21 22:00:25 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Register a hook that will be called after "cold"
|
|
|
|
* autoconfiguration is complete and interrupts can
|
|
|
|
* be used to complete initialization.
|
|
|
|
*/
|
|
|
|
int
|
|
|
|
config_intrhook_establish(hook)
|
|
|
|
struct intr_config_hook *hook;
|
|
|
|
{
|
|
|
|
struct intr_config_hook *hook_entry;
|
|
|
|
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_lock(&intr_config_hook_lock);
|
|
|
|
TAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links)
|
1997-09-21 22:00:25 +00:00
|
|
|
if (hook_entry == hook)
|
|
|
|
break;
|
|
|
|
if (hook_entry != NULL) {
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
1997-09-21 22:00:25 +00:00
|
|
|
printf("config_intrhook_establish: establishing an "
|
|
|
|
"already established hook.\n");
|
|
|
|
return (1);
|
|
|
|
}
|
|
|
|
TAILQ_INSERT_TAIL(&intr_config_hook_list, hook, ich_links);
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
1997-09-21 22:00:25 +00:00
|
|
|
if (cold == 0)
|
1999-04-17 08:36:07 +00:00
|
|
|
/* XXX Sufficient for modules loaded after initial config??? */
|
1997-09-21 22:00:25 +00:00
|
|
|
run_interrupt_driven_config_hooks(NULL);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
config_intrhook_disestablish(hook)
|
|
|
|
struct intr_config_hook *hook;
|
|
|
|
{
|
|
|
|
struct intr_config_hook *hook_entry;
|
|
|
|
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_lock(&intr_config_hook_lock);
|
|
|
|
TAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links)
|
1997-09-21 22:00:25 +00:00
|
|
|
if (hook_entry == hook)
|
|
|
|
break;
|
|
|
|
if (hook_entry == NULL)
|
|
|
|
panic("config_intrhook_disestablish: disestablishing an "
|
|
|
|
"unestablished hook");
|
|
|
|
|
|
|
|
TAILQ_REMOVE(&intr_config_hook_list, hook, ich_links);
|
2006-07-19 18:53:56 +00:00
|
|
|
|
1997-09-21 22:00:25 +00:00
|
|
|
/* Wakeup anyone watching the list */
|
|
|
|
wakeup(&intr_config_hook_list);
|
2006-07-19 18:53:56 +00:00
|
|
|
mtx_unlock(&intr_config_hook_lock);
|
1997-09-21 22:00:25 +00:00
|
|
|
}
|
2008-07-19 12:12:54 +00:00
|
|
|
|
|
|
|
#ifdef DDB
|
|
|
|
#include <ddb/ddb.h>
|
|
|
|
|
|
|
|
DB_SHOW_COMMAND(conifhk, db_show_conifhk)
|
|
|
|
{
|
|
|
|
struct intr_config_hook *hook_entry;
|
|
|
|
char namebuf[64];
|
|
|
|
long offset;
|
|
|
|
|
|
|
|
TAILQ_FOREACH(hook_entry, &intr_config_hook_list, ich_links) {
|
|
|
|
if (linker_ddb_search_symbol_name(
|
|
|
|
(caddr_t)hook_entry->ich_func, namebuf, sizeof(namebuf),
|
|
|
|
&offset) == 0) {
|
|
|
|
db_printf("hook: %p at %s+%#lx arg: %p\n",
|
|
|
|
hook_entry->ich_func, namebuf, offset,
|
|
|
|
hook_entry->ich_arg);
|
|
|
|
} else {
|
|
|
|
db_printf("hook: %p at ??+?? arg %p\n",
|
|
|
|
hook_entry->ich_func, hook_entry->ich_arg);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* DDB */
|