filename | src/eventq.h |
changeset | 265:5daf59b7f31b |
next | 561:533f6b478071 |
author | nkeynes |
date | Wed Jan 31 11:02:50 2007 +0000 (17 years ago) |
permissions | -rw-r--r-- |
last change | Load textures into the right region Allow setting the backplane control word from the test data |
file | annotate | diff | log | raw |
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +00001.2 +++ b/src/eventq.h Wed Jan 31 11:02:50 2007 +00001.3 @@ -0,0 +1,71 @@1.4 +/**1.5 + * $Id: eventq.h,v 1.1 2007-01-06 04:06:36 nkeynes Exp $1.6 + *1.7 + * Simple implementation of one-shot timers. Effectively this allows IO1.8 + * devices to wait until a particular time before completing. We expect1.9 + * there to be at least half a dozen or so continually scheduled events1.10 + * (TMU and PVR2), peaking around 20+.1.11 + *1.12 + * Copyright (c) 2005 Nathan Keynes.1.13 + *1.14 + * This program is free software; you can redistribute it and/or modify1.15 + * it under the terms of the GNU General Public License as published by1.16 + * the Free Software Foundation; either version 2 of the License, or1.17 + * (at your option) any later version.1.18 + *1.19 + * This program is distributed in the hope that it will be useful,1.20 + * but WITHOUT ANY WARRANTY; without even the implied warranty of1.21 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the1.22 + * GNU General Public License for more details.1.23 + */1.24 +1.25 +#include "dream.h"1.26 +1.27 +#define NOT_SCHEDULED 0xFFFFFFFF /* Sentinel value */1.28 +1.29 +1.30 +typedef void (*event_func_t)(int eventid);1.31 +1.32 +/**1.33 + * Register the callback to be associated with the given event ID.1.34 + * Note: These should be registered at init time and never changed.1.35 + */1.36 +void register_event_callback( int eventid, event_func_t func );1.37 +1.38 +/**1.39 + * Schedule a new pending event.1.40 + * @param eventid Unique ID identifying the event in question (used to remove it1.41 + * at a later time). If the eventid is scheduled more than once, only the lastest1.42 + * schedule for that ID will be valid.1.43 + * @param nanosecs Nanoseconds from the current SH4 time at which the event1.44 + * should occur.1.45 + */1.46 +void event_schedule( int eventid, uint32_t nanosecs );1.47 +1.48 +/**1.49 + * Schedule a long-duration pending event1.50 + */1.51 +void event_schedule_long( int eventid, uint32_t seconds, uint32_t nanosecs );1.52 +1.53 +/**1.54 + * Remove a previously created event without triggering it. This is usually1.55 + * only used when an operation is aborted.1.56 + */1.57 +void event_cancel( int eventid );1.58 +1.59 +/**1.60 + * Return the slice cycle time of the next event, or NOT_SCHEDULED1.61 + * if no events are scheduled for this time slice.1.62 + */1.63 +uint32_t event_get_next_time();1.64 +1.65 +/**1.66 + * Execute the event on the top of the queue, and remove it.1.67 + */1.68 +void event_execute();1.69 +1.70 +#define MAX_EVENT_ID 1281.71 +1.72 +/* Events 1..96 are defined as the corresponding ASIC events. */1.73 +1.74 +
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