290 lines
6.7 KiB
C
290 lines
6.7 KiB
C
/*-
|
|
* Copyright (c) 2000 Michael Smith
|
|
* Copyright (c) 2000 BSDi
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* 6.3 : Scheduling services
|
|
*/
|
|
|
|
#include "acpi.h"
|
|
|
|
#include "opt_acpi.h"
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/interrupt.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/kthread.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/taskqueue.h>
|
|
#include <machine/clock.h>
|
|
|
|
#include <sys/bus.h>
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
|
|
#define _COMPONENT ACPI_OS_SERVICES
|
|
ACPI_MODULE_NAME("SCHEDULE")
|
|
|
|
/*
|
|
* This is a little complicated due to the fact that we need to build and then
|
|
* free a 'struct task' for each task we enqueue.
|
|
*/
|
|
|
|
MALLOC_DEFINE(M_ACPITASK, "acpitask", "ACPI deferred task");
|
|
|
|
static void AcpiOsExecuteQueue(void *arg, int pending);
|
|
|
|
struct acpi_task {
|
|
struct task at_task;
|
|
OSD_EXECUTION_CALLBACK at_function;
|
|
void *at_context;
|
|
};
|
|
|
|
struct acpi_task_queue {
|
|
STAILQ_ENTRY(acpi_task_queue) at_q;
|
|
struct acpi_task *at;
|
|
};
|
|
|
|
#if __FreeBSD_version >= 500000
|
|
/*
|
|
* Private task queue definition for ACPI
|
|
*/
|
|
TASKQUEUE_DECLARE(acpi);
|
|
static void *taskqueue_acpi_ih;
|
|
|
|
static void
|
|
taskqueue_acpi_enqueue(void *context)
|
|
{
|
|
swi_sched(taskqueue_acpi_ih, 0);
|
|
}
|
|
|
|
static void
|
|
taskqueue_acpi_run(void *dummy)
|
|
{
|
|
taskqueue_run(taskqueue_acpi);
|
|
}
|
|
|
|
TASKQUEUE_DEFINE(acpi, taskqueue_acpi_enqueue, 0,
|
|
swi_add(NULL, "acpitaskq", taskqueue_acpi_run, NULL,
|
|
SWI_TQ, 0, &taskqueue_acpi_ih));
|
|
|
|
#ifdef ACPI_USE_THREADS
|
|
STAILQ_HEAD(, acpi_task_queue) acpi_task_queue;
|
|
static struct mtx acpi_task_mtx;
|
|
|
|
static void
|
|
acpi_task_thread(void *arg)
|
|
{
|
|
struct acpi_task_queue *atq;
|
|
OSD_EXECUTION_CALLBACK Function;
|
|
void *Context;
|
|
|
|
for (;;) {
|
|
mtx_lock(&acpi_task_mtx);
|
|
if ((atq = STAILQ_FIRST(&acpi_task_queue)) == NULL) {
|
|
msleep(&acpi_task_queue, &acpi_task_mtx, PCATCH, "actask", 0);
|
|
mtx_unlock(&acpi_task_mtx);
|
|
continue;
|
|
}
|
|
|
|
STAILQ_REMOVE_HEAD(&acpi_task_queue, at_q);
|
|
mtx_unlock(&acpi_task_mtx);
|
|
|
|
Function = (OSD_EXECUTION_CALLBACK)atq->at->at_function;
|
|
Context = atq->at->at_context;
|
|
|
|
mtx_lock(&Giant);
|
|
Function(Context);
|
|
|
|
free(atq->at, M_ACPITASK);
|
|
free(atq, M_ACPITASK);
|
|
mtx_unlock(&Giant);
|
|
}
|
|
|
|
kthread_exit(0);
|
|
}
|
|
|
|
int
|
|
acpi_task_thread_init(void)
|
|
{
|
|
int i, err;
|
|
struct proc *acpi_kthread_proc;
|
|
|
|
err = 0;
|
|
STAILQ_INIT(&acpi_task_queue);
|
|
mtx_init(&acpi_task_mtx, "ACPI task", NULL, MTX_DEF);
|
|
|
|
for (i = 0; i < ACPI_MAX_THREADS; i++) {
|
|
err = kthread_create(acpi_task_thread, NULL, &acpi_kthread_proc,
|
|
0, 0, "acpi_task%d", i);
|
|
if (err != 0) {
|
|
printf("%s: kthread_create failed(%d)\n", __func__, err);
|
|
break;
|
|
}
|
|
}
|
|
return (err);
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
ACPI_STATUS
|
|
AcpiOsQueueForExecution(UINT32 Priority, OSD_EXECUTION_CALLBACK Function, void *Context)
|
|
{
|
|
struct acpi_task *at;
|
|
int pri;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
if (Function == NULL)
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
at = malloc(sizeof(*at), M_ACPITASK, M_NOWAIT); /* Interrupt Context */
|
|
if (at == NULL)
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
bzero(at, sizeof(*at));
|
|
|
|
at->at_function = Function;
|
|
at->at_context = Context;
|
|
switch (Priority) {
|
|
case OSD_PRIORITY_GPE:
|
|
pri = 4;
|
|
break;
|
|
case OSD_PRIORITY_HIGH:
|
|
pri = 3;
|
|
break;
|
|
case OSD_PRIORITY_MED:
|
|
pri = 2;
|
|
break;
|
|
case OSD_PRIORITY_LO:
|
|
pri = 1;
|
|
break;
|
|
default:
|
|
free(at, M_ACPITASK);
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
TASK_INIT(&at->at_task, pri, AcpiOsExecuteQueue, at);
|
|
|
|
#if __FreeBSD_version < 500000
|
|
taskqueue_enqueue(taskqueue_swi, (struct task *)at);
|
|
#else
|
|
taskqueue_enqueue(taskqueue_acpi, (struct task *)at);
|
|
#endif
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
static void
|
|
AcpiOsExecuteQueue(void *arg, int pending)
|
|
{
|
|
struct acpi_task *at;
|
|
struct acpi_task_queue *atq;
|
|
OSD_EXECUTION_CALLBACK Function;
|
|
void *Context;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
at = (struct acpi_task *)arg;
|
|
atq = NULL;
|
|
Function = NULL;
|
|
Context = NULL;
|
|
|
|
#ifdef ACPI_USE_THREADS
|
|
atq = malloc(sizeof(*atq), M_ACPITASK, M_NOWAIT);
|
|
if (atq == NULL) {
|
|
printf("%s: no memory\n", __func__);
|
|
return;
|
|
}
|
|
|
|
atq->at = at;
|
|
|
|
mtx_lock(&acpi_task_mtx);
|
|
STAILQ_INSERT_TAIL(&acpi_task_queue, atq, at_q);
|
|
mtx_unlock(&acpi_task_mtx);
|
|
wakeup_one(&acpi_task_queue);
|
|
#else
|
|
Function = (OSD_EXECUTION_CALLBACK)at->at_function;
|
|
Context = at->at_context;
|
|
|
|
Function(Context);
|
|
free(at, M_ACPITASK);
|
|
#endif
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* We don't have any sleep granularity better than hz, so
|
|
* make do with that.
|
|
*/
|
|
void
|
|
AcpiOsSleep(UINT32 Seconds, UINT32 Milliseconds)
|
|
{
|
|
int timo;
|
|
static int dummy;
|
|
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
timo = (Seconds * hz) + Milliseconds * hz / 1000;
|
|
|
|
/*
|
|
* If requested sleep time is less than our hz resolution, use
|
|
* DELAY instead for better granularity.
|
|
*/
|
|
if (timo > 0)
|
|
tsleep(&dummy, 0, "acpislp", timo);
|
|
else
|
|
DELAY(Milliseconds * 1000);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
void
|
|
AcpiOsStall(UINT32 Microseconds)
|
|
{
|
|
ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
|
|
|
|
DELAY(Microseconds);
|
|
return_VOID;
|
|
}
|
|
|
|
UINT32
|
|
AcpiOsGetThreadId(void)
|
|
{
|
|
struct proc *p;
|
|
/* XXX do not add FUNCTION_TRACE here, results in recursive call */
|
|
|
|
p = curproc;
|
|
#if __FreeBSD_version < 500000
|
|
if (p == NULL)
|
|
p = &proc0;
|
|
#endif
|
|
KASSERT(p != NULL, ("%s: curproc is NULL!", __func__));
|
|
return(p->p_pid + 1); /* can't return 0 */
|
|
}
|