2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/acpica/Osd/OsdSchedule.c,v 1.28 2004/05/06 02:18:58 njl Exp $
28 * $DragonFly: src/sys/dev/acpica5/Osd/OsdSchedule.c,v 1.3 2004/06/27 08:52:42 dillon Exp $
32 * 6.3 : Scheduling services
36 #include <sys/param.h>
37 #include <sys/systm.h>
39 #include <sys/interrupt.h>
40 #include <sys/kernel.h>
41 #include <sys/kthread.h>
42 #include <sys/malloc.h>
44 #include <sys/taskqueue.h>
45 #include <machine/clock.h>
48 #include <dev/acpica5/acpivar.h>
50 #define _COMPONENT ACPI_OS_SERVICES
51 ACPI_MODULE_NAME("SCHEDULE")
54 * This is a little complicated due to the fact that we need to build and then
55 * free a 'struct task' for each task we enqueue.
58 MALLOC_DEFINE(M_ACPITASK, "acpitask", "ACPI deferred task");
60 static void AcpiOsExecuteQueue(void *arg, int pending);
64 OSD_EXECUTION_CALLBACK at_function;
68 struct acpi_task_queue {
69 STAILQ_ENTRY(acpi_task_queue) at_q;
73 #if __FreeBSD_version >= 500000
75 * Private task queue definition for ACPI
77 TASKQUEUE_DECLARE(acpi);
78 static void *taskqueue_acpi_ih;
81 taskqueue_acpi_enqueue(void *context)
83 swi_sched(taskqueue_acpi_ih, 0);
87 taskqueue_acpi_run(void *dummy)
89 taskqueue_run(taskqueue_acpi);
92 TASKQUEUE_DEFINE(acpi, taskqueue_acpi_enqueue, 0,
93 swi_add(NULL, "acpitaskq", taskqueue_acpi_run, NULL,
94 SWI_TQ, 0, &taskqueue_acpi_ih));
96 #ifdef ACPI_USE_THREADS
97 static STAILQ_HEAD(, acpi_task_queue) acpi_task_queue;
98 static struct mtx acpi_task_mtx;
101 acpi_task_thread(void *arg)
103 struct acpi_task_queue *atq;
104 OSD_EXECUTION_CALLBACK Function;
108 mtx_lock(&acpi_task_mtx);
109 if ((atq = STAILQ_FIRST(&acpi_task_queue)) == NULL) {
110 msleep(&acpi_task_queue, &acpi_task_mtx, PCATCH, "actask", 0);
111 mtx_unlock(&acpi_task_mtx);
115 STAILQ_REMOVE_HEAD(&acpi_task_queue, at_q);
116 mtx_unlock(&acpi_task_mtx);
118 Function = (OSD_EXECUTION_CALLBACK)atq->at->at_function;
119 Context = atq->at->at_context;
124 free(atq->at, M_ACPITASK);
125 free(atq, M_ACPITASK);
133 acpi_task_thread_init(void)
136 struct proc *acpi_kthread_proc;
139 STAILQ_INIT(&acpi_task_queue);
140 mtx_init(&acpi_task_mtx, "ACPI task", NULL, MTX_DEF);
142 for (i = 0; i < ACPI_MAX_THREADS; i++) {
143 err = kthread_create(acpi_task_thread, NULL, &acpi_kthread_proc,
144 0, 0, "acpi_task%d", i);
146 printf("%s: kthread_create failed(%d)\n", __func__, err);
152 #endif /* ACPI_USE_THREADS */
153 #endif /* __FreeBSD_version >= 500000 */
155 /* This function is called in interrupt context. */
157 AcpiOsQueueForExecution(UINT32 Priority, OSD_EXECUTION_CALLBACK Function,
160 struct acpi_task *at;
163 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
165 if (Function == NULL)
166 return_ACPI_STATUS (AE_BAD_PARAMETER);
168 /* Note: Interrupt Context */
169 at = malloc(sizeof(*at), M_ACPITASK, M_INTWAIT | M_ZERO);
170 at->at_function = Function;
171 at->at_context = Context;
173 case OSD_PRIORITY_GPE:
176 case OSD_PRIORITY_HIGH:
179 case OSD_PRIORITY_MED:
182 case OSD_PRIORITY_LO:
186 free(at, M_ACPITASK);
187 return_ACPI_STATUS (AE_BAD_PARAMETER);
189 TASK_INIT(&at->at_task, pri, AcpiOsExecuteQueue, at);
191 #if __FreeBSD_version >= 500000
192 taskqueue_enqueue(taskqueue_acpi, (struct task *)at);
194 taskqueue_enqueue(taskqueue_swi, (struct task *)at);
196 return_ACPI_STATUS (AE_OK);
200 AcpiOsExecuteQueue(void *arg, int pending)
202 struct acpi_task *at;
203 struct acpi_task_queue *atq;
204 OSD_EXECUTION_CALLBACK Function;
207 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
209 at = (struct acpi_task *)arg;
214 #ifdef ACPI_USE_THREADS
215 atq = malloc(sizeof(*atq), M_ACPITASK, M_INTWAIT);
218 mtx_lock(&acpi_task_mtx);
219 STAILQ_INSERT_TAIL(&acpi_task_queue, atq, at_q);
220 mtx_unlock(&acpi_task_mtx);
221 wakeup_one(&acpi_task_queue);
223 Function = (OSD_EXECUTION_CALLBACK)at->at_function;
224 Context = at->at_context;
227 free(at, M_ACPITASK);
234 AcpiOsSleep(UINT32 Seconds, UINT32 Milliseconds)
239 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
241 timo = (Seconds * hz) + Milliseconds * hz / 1000;
244 * If requested sleep time is less than our hz resolution, use
245 * DELAY instead for better granularity.
248 tsleep(&dummy, 0, "acpislp", timo);
250 DELAY(Milliseconds * 1000);
256 AcpiOsStall(UINT32 Microseconds)
258 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__);
265 AcpiOsGetThreadId(void)
269 /* XXX do not add ACPI_FUNCTION_TRACE here, results in recursive call. */
272 #if __FreeBSD_version < 500000
276 KASSERT(p != NULL, ("%s: curproc is NULL!", __func__));
278 /* Returning 0 is not allowed. */
279 return (p->p_pid + 1);