qemu/hw/char/parallel-isa.c
Bernhard Beschow 1d1afd9ff7 hw/char/parallel-isa: Implement relocation and enabling/disabling for TYPE_ISA_PARALLEL
The real SuperI/O chips emulated by QEMU allow for relocating and enabling or
disabling their SuperI/O functions via software. So far this is not implemented.
Prepare for that by adding isa_parallel_set_{enabled,iobase}.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20240114123911.4877-10-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2024-02-14 06:09:32 -05:00

58 lines
1.4 KiB
C

/*
* QEMU Parallel PORT (ISA bus helpers)
*
* These functions reside in a separate file since they also might be
* required for linking when compiling QEMU without CONFIG_PARALLEL.
*
* Copyright (c) 2003 Fabrice Bellard
*
* SPDX-License-Identifier: MIT
*/
#include "qemu/osdep.h"
#include "sysemu/sysemu.h"
#include "hw/isa/isa.h"
#include "hw/qdev-properties.h"
#include "hw/char/parallel-isa.h"
#include "hw/char/parallel.h"
#include "qapi/error.h"
static void parallel_init(ISABus *bus, int index, Chardev *chr)
{
DeviceState *dev;
ISADevice *isadev;
isadev = isa_new(TYPE_ISA_PARALLEL);
dev = DEVICE(isadev);
qdev_prop_set_uint32(dev, "index", index);
qdev_prop_set_chr(dev, "chardev", chr);
isa_realize_and_unref(isadev, bus, &error_fatal);
}
void parallel_hds_isa_init(ISABus *bus, int n)
{
int i;
assert(n <= MAX_PARALLEL_PORTS);
for (i = 0; i < n; i++) {
if (parallel_hds[i]) {
parallel_init(bus, i, parallel_hds[i]);
}
}
}
void isa_parallel_set_iobase(ISADevice *parallel, hwaddr iobase)
{
ISAParallelState *s = ISA_PARALLEL(parallel);
parallel->ioport_id = iobase;
s->iobase = iobase;
portio_list_set_address(&s->portio_list, s->iobase);
}
void isa_parallel_set_enabled(ISADevice *parallel, bool enabled)
{
portio_list_set_enabled(&ISA_PARALLEL(parallel)->portio_list, enabled);
}