xref: /openbmc/qemu/hw/char/parallel-isa.c (revision 2b74dd91)
1 /*
2  * QEMU Parallel PORT (ISA bus helpers)
3  *
4  * These functions reside in a separate file since they also might be
5  * required for linking when compiling QEMU without CONFIG_PARALLEL.
6  *
7  * Copyright (c) 2003 Fabrice Bellard
8  *
9  * SPDX-License-Identifier: MIT
10  */
11 
12 #include "qemu/osdep.h"
13 #include "sysemu/sysemu.h"
14 #include "hw/isa/isa.h"
15 #include "hw/qdev-properties.h"
16 #include "hw/char/parallel-isa.h"
17 #include "hw/char/parallel.h"
18 #include "qapi/error.h"
19 
20 static void parallel_init(ISABus *bus, int index, Chardev *chr)
21 {
22     DeviceState *dev;
23     ISADevice *isadev;
24 
25     isadev = isa_new(TYPE_ISA_PARALLEL);
26     dev = DEVICE(isadev);
27     qdev_prop_set_uint32(dev, "index", index);
28     qdev_prop_set_chr(dev, "chardev", chr);
29     isa_realize_and_unref(isadev, bus, &error_fatal);
30 }
31 
32 void parallel_hds_isa_init(ISABus *bus, int n)
33 {
34     int i;
35 
36     assert(n <= MAX_PARALLEL_PORTS);
37 
38     for (i = 0; i < n; i++) {
39         if (parallel_hds[i]) {
40             parallel_init(bus, i, parallel_hds[i]);
41         }
42     }
43 }
44 
45 void isa_parallel_set_iobase(ISADevice *parallel, hwaddr iobase)
46 {
47     ISAParallelState *s = ISA_PARALLEL(parallel);
48 
49     parallel->ioport_id = iobase;
50     s->iobase = iobase;
51     portio_list_set_address(&s->portio_list, s->iobase);
52 }
53 
54 void isa_parallel_set_enabled(ISADevice *parallel, bool enabled)
55 {
56     portio_list_set_enabled(&ISA_PARALLEL(parallel)->portio_list, enabled);
57 }
58