hw/char/parallel-isa.c

   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 }