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/* This file is part of the program psim.
Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "sim-main.h"
#include "hw-device.h"
#include "hw-properties.h"
#if HAVE_STDLIB_H
#include <stdlib.h>
#endif
/* Address methods */
const hw_unit *
hw_unit_address (struct hw *me)
{
return &me->unit_address_of_hw;
}
/* IOCTL: */
int
hw_ioctl (struct hw *me,
sim_cpu *processor,
sim_cia cia,
hw_ioctl_request request,
...)
{
int status;
va_list ap;
va_start(ap, request);
status = me->to_ioctl (me, processor, cia, request, ap);
va_end(ap);
return status;
}
/* I/O */
void volatile
hw_abort (struct hw *me,
const char *fmt,
...)
{
SIM_DESC sd;
const char *name;
va_list ap;
va_start(ap, fmt);
/* find a system to abort through */
if (me == NULL || hw_system (me) == NULL)
sd = NULL;
else
sd = hw_system (me);
/* find an identity */
if (me != NULL && hw_path (me) != NULL && hw_path (me) [0] != '\0')
name = hw_path (me);
else if (me != NULL && hw_name (me) != NULL && hw_name (me)[0] != '\0')
name = hw_name (me);
else if (me != NULL && hw_family (me) != NULL && hw_family (me)[0] != '\0')
name = hw_family (me);
else
name = "device";
/* report the problem */
sim_io_eprintf (sd, "%s: ", name);
sim_io_evprintf (sd, fmt, ap);
sim_io_error (sd, "%s", "");
}
/* The event queue abstraction (for devices) */
struct _hw_event {
void *data;
struct hw *me;
hw_event_handler *handler;
sim_event *real;
};
/* Pass the H/W event onto the real handler */
static void
bounce_hw_event (SIM_DESC sd,
void *data)
{
hw_event event = * (hw_event*) data;
zfree (data);
event.handler (event.me, event.data);
}
/* Map onto the event functions */
hw_event *
hw_event_queue_schedule (struct hw *me,
signed64 delta_time,
hw_event_handler *handler,
void *data)
{
hw_event *event = ZALLOC (hw_event);
event->data = data;
event->handler = handler;
event->me = me;
event->real = sim_events_schedule (hw_system (me),
delta_time,
bounce_hw_event,
event);
return event;
}
void
hw_event_queue_deschedule (struct hw *me,
hw_event *event_to_remove)
{
sim_events_deschedule (hw_system (me),
event_to_remove->real);
zfree (event_to_remove);
}
signed64
hw_event_queue_time (struct hw *me)
{
return sim_events_time (hw_system (me));
}
/* Mechanism for associating allocated memory regions to a device.
When a device is deleted any remaining memory regions are also
reclaimed.
FIXME: Perhaphs this can be generalized, perhaphs it should not
be. */
struct hw_alloc_data {
void *alloc;
int zalloc_p;
struct hw_alloc_data *next;
};
extern void *
hw_zalloc (struct hw *me, unsigned long size)
{
struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
memory->alloc = zalloc (size);
memory->zalloc_p = 1;
memory->next = me->alloc_of_hw;
me->alloc_of_hw = memory;
return memory->alloc;
}
extern void *
hw_malloc (struct hw *me, unsigned long size)
{
struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
memory->alloc = zalloc (size);
memory->zalloc_p = 0;
memory->next = me->alloc_of_hw;
me->alloc_of_hw = memory;
return memory->alloc;
}
extern void
hw_free (struct hw *me,
void *alloc)
{
struct hw_alloc_data **memory;
for (memory = &me->alloc_of_hw;
*memory != NULL;
memory = &(*memory)->next)
{
if ((*memory)->alloc == alloc)
{
struct hw_alloc_data *die = (*memory);
(*memory) = die->next;
if (die->zalloc_p)
zfree (die->alloc);
else
free (die->alloc);
zfree (die);
return;
}
}
hw_abort (me, "free of memory not belonging to a device");
}
extern void
hw_free_all (struct hw *me)
{
while (me->alloc_of_hw != NULL)
{
hw_free (me, me->alloc_of_hw->alloc);
}
}
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