filename | src/eventq.h |
changeset | 265:5daf59b7f31b |
next | 561:533f6b478071 |
author | nkeynes |
date | Sun Sep 16 07:03:23 2007 +0000 (16 years ago) |
permissions | -rw-r--r-- |
last change | Implement MAC.W, MAC.L and DIV1 Correct SHAD/SHLD Fix privilege and slot illegal checks on LDC/STC opcodes Fix various other small bugs |
file | annotate | diff | log | raw |
nkeynes@265 | 1 | /** |
nkeynes@265 | 2 | * $Id: eventq.h,v 1.1 2007-01-06 04:06:36 nkeynes Exp $ |
nkeynes@265 | 3 | * |
nkeynes@265 | 4 | * Simple implementation of one-shot timers. Effectively this allows IO |
nkeynes@265 | 5 | * devices to wait until a particular time before completing. We expect |
nkeynes@265 | 6 | * there to be at least half a dozen or so continually scheduled events |
nkeynes@265 | 7 | * (TMU and PVR2), peaking around 20+. |
nkeynes@265 | 8 | * |
nkeynes@265 | 9 | * Copyright (c) 2005 Nathan Keynes. |
nkeynes@265 | 10 | * |
nkeynes@265 | 11 | * This program is free software; you can redistribute it and/or modify |
nkeynes@265 | 12 | * it under the terms of the GNU General Public License as published by |
nkeynes@265 | 13 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@265 | 14 | * (at your option) any later version. |
nkeynes@265 | 15 | * |
nkeynes@265 | 16 | * This program is distributed in the hope that it will be useful, |
nkeynes@265 | 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@265 | 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@265 | 19 | * GNU General Public License for more details. |
nkeynes@265 | 20 | */ |
nkeynes@265 | 21 | |
nkeynes@265 | 22 | #include "dream.h" |
nkeynes@265 | 23 | |
nkeynes@265 | 24 | #define NOT_SCHEDULED 0xFFFFFFFF /* Sentinel value */ |
nkeynes@265 | 25 | |
nkeynes@265 | 26 | |
nkeynes@265 | 27 | typedef void (*event_func_t)(int eventid); |
nkeynes@265 | 28 | |
nkeynes@265 | 29 | /** |
nkeynes@265 | 30 | * Register the callback to be associated with the given event ID. |
nkeynes@265 | 31 | * Note: These should be registered at init time and never changed. |
nkeynes@265 | 32 | */ |
nkeynes@265 | 33 | void register_event_callback( int eventid, event_func_t func ); |
nkeynes@265 | 34 | |
nkeynes@265 | 35 | /** |
nkeynes@265 | 36 | * Schedule a new pending event. |
nkeynes@265 | 37 | * @param eventid Unique ID identifying the event in question (used to remove it |
nkeynes@265 | 38 | * at a later time). If the eventid is scheduled more than once, only the lastest |
nkeynes@265 | 39 | * schedule for that ID will be valid. |
nkeynes@265 | 40 | * @param nanosecs Nanoseconds from the current SH4 time at which the event |
nkeynes@265 | 41 | * should occur. |
nkeynes@265 | 42 | */ |
nkeynes@265 | 43 | void event_schedule( int eventid, uint32_t nanosecs ); |
nkeynes@265 | 44 | |
nkeynes@265 | 45 | /** |
nkeynes@265 | 46 | * Schedule a long-duration pending event |
nkeynes@265 | 47 | */ |
nkeynes@265 | 48 | void event_schedule_long( int eventid, uint32_t seconds, uint32_t nanosecs ); |
nkeynes@265 | 49 | |
nkeynes@265 | 50 | /** |
nkeynes@265 | 51 | * Remove a previously created event without triggering it. This is usually |
nkeynes@265 | 52 | * only used when an operation is aborted. |
nkeynes@265 | 53 | */ |
nkeynes@265 | 54 | void event_cancel( int eventid ); |
nkeynes@265 | 55 | |
nkeynes@265 | 56 | /** |
nkeynes@265 | 57 | * Return the slice cycle time of the next event, or NOT_SCHEDULED |
nkeynes@265 | 58 | * if no events are scheduled for this time slice. |
nkeynes@265 | 59 | */ |
nkeynes@265 | 60 | uint32_t event_get_next_time(); |
nkeynes@265 | 61 | |
nkeynes@265 | 62 | /** |
nkeynes@265 | 63 | * Execute the event on the top of the queue, and remove it. |
nkeynes@265 | 64 | */ |
nkeynes@265 | 65 | void event_execute(); |
nkeynes@265 | 66 | |
nkeynes@265 | 67 | #define MAX_EVENT_ID 128 |
nkeynes@265 | 68 | |
nkeynes@265 | 69 | /* Events 1..96 are defined as the corresponding ASIC events. */ |
nkeynes@265 | 70 | |
nkeynes@265 | 71 |
.