OsdSchedule.c revision 67760
1220496Smarkm/*- 21802Sphk * Copyright (c) 2000 Michael Smith 3220496Smarkm * Copyright (c) 2000 BSDi 4220496Smarkm * All rights reserved. 5220496Smarkm * 6220496Smarkm * Redistribution and use in source and binary forms, with or without 7220496Smarkm * modification, are permitted provided that the following conditions 8220496Smarkm * are met: 9220496Smarkm * 1. Redistributions of source code must retain the above copyright 10220496Smarkm * notice, this list of conditions and the following disclaimer. 11220496Smarkm * 2. Redistributions in binary form must reproduce the above copyright 12220496Smarkm * notice, this list of conditions and the following disclaimer in the 13220496Smarkm * documentation and/or other materials provided with the distribution. 1484211Sdillon * 1584211Sdillon * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1684211Sdillon * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17220496Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 181802Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19220496Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20220496Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21220496Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 221802Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23220496Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24220496Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 251802Sphk * SUCH DAMAGE. 2628688Sjoerg * 271802Sphk * $FreeBSD: head/sys/dev/acpica/Osd/OsdSchedule.c 67760 2000-10-28 06:56:15Z msmith $ 281802Sphk */ 291802Sphk 301802Sphk/* 311802Sphk * 6.3 : Scheduling services 321802Sphk */ 331802Sphk 341802Sphk#include "acpi.h" 351802Sphk 361802Sphk#include <sys/kernel.h> 371802Sphk#include <sys/malloc.h> 381802Sphk#include <sys/taskqueue.h> 391802Sphk#include <machine/clock.h> 401802Sphk 411802Sphk/* 42220496Smarkm * This is a little complicated due to the fact that we need to build and then 43220496Smarkm * free a 'struct task' for each task we enqueue. 44220496Smarkm * 451802Sphk * We use the default taskqueue_swi queue, since it really doesn't matter what 46220496Smarkm * else we're queued along with. 471802Sphk */ 48220496Smarkm 49220496SmarkmMALLOC_DEFINE(M_ACPITASK, "acpitask", "ACPI deferred task"); 501802Sphk 511802Sphkstatic void AcpiOsExecuteQueue(void *arg, int pending); 52220496Smarkm 53220496Smarkmstruct acpi_task { 54220496Smarkm struct task at_task; 551802Sphk OSD_EXECUTION_CALLBACK at_function; 56220496Smarkm void *at_context; 571802Sphk}; 58220496Smarkm 59220496SmarkmACPI_STATUS 60220496SmarkmAcpiOsQueueForExecution(UINT32 Priority, OSD_EXECUTION_CALLBACK Function, void *Context) 61220496Smarkm{ 62220496Smarkm struct acpi_task *at; 63220496Smarkm 64220496Smarkm if (Function == NULL) 65220496Smarkm return(AE_BAD_PARAMETER); 66220496Smarkm 67220496Smarkm /* XXX is it OK to block here? */ 68220496Smarkm at = malloc(sizeof(*at), M_ACPITASK, M_WAITOK); 691802Sphk bzero(at, sizeof(*at)); 70 71 at->at_function = Function; 72 at->at_context = Context; 73 at->at_task.ta_func = AcpiOsExecuteQueue; 74 at->at_task.ta_context = at; 75 switch (Priority) { 76 case OSD_PRIORITY_HIGH: 77 at->at_task.ta_priority = 3; 78 break; 79 case OSD_PRIORITY_MED: 80 at->at_task.ta_priority = 2; 81 break; 82 case OSD_PRIORITY_LO: 83 at->at_task.ta_priority = 1; 84 break; 85 default: 86 free(at, M_ACPITASK); 87 return(AE_BAD_PARAMETER); 88 } 89 90 taskqueue_enqueue(taskqueue_swi, (struct task *)at); 91 return(AE_OK); 92} 93 94static void 95AcpiOsExecuteQueue(void *arg, int pending) 96{ 97 struct acpi_task *at = (struct acpi_task *)arg; 98 OSD_EXECUTION_CALLBACK Function; 99 void *Context; 100 101 Function = (OSD_EXECUTION_CALLBACK)at->at_function; 102 Context = at->at_context; 103 104 free(at, M_ACPITASK); 105 106 Function(Context); 107} 108 109/* 110 * We don't have any sleep granularity better than hz, so 111 * make do with that. 112 */ 113void 114AcpiOsSleep (UINT32 Seconds, UINT32 Milliseconds) 115{ 116 int timo; 117 118 timo = (Seconds * hz) + Milliseconds / (1000 * hz); 119 if (timo == 0) 120 timo = 1; 121 tsleep(NULL, 0, "acpislp", timo); 122} 123 124void 125AcpiOsSleepUsec (UINT32 Microseconds) 126{ 127 if (Microseconds > 1000) { /* long enough to be worth the overhead of sleeping */ 128 AcpiOsSleep(0, Microseconds / 1000); 129 } else { 130 DELAY(Microseconds); 131 } 132} 133