hw/audio/soundhw.c

   1 /*
   2  * QEMU System Emulator
   3  *
   4  * Copyright (c) 2003-2008 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu/osdep.h"
  25 #include "qemu/option.h"
  26 #include "qemu/help_option.h"
  27 #include "qemu/error-report.h"
  28 #include "qapi/error.h"
  29 #include "qom/object.h"
  30 #include "hw/qdev-properties.h"
  31 #include "hw/isa/isa.h"
  32 #include "hw/pci/pci.h"
  33 #include "hw/audio/soundhw.h"
  34
  35 struct soundhw {
  36     const char *name;
  37     const char *descr;
  38     const char *typename;
  39     int isa;
  40     int (*init_pci) (PCIBus *bus, const char *audiodev);
  41 };
  42
  43 static struct soundhw soundhw[9];
  44 static int soundhw_count;
  45
  46 void pci_register_soundhw(const char *name, const char *descr,
  47                           int (*init_pci)(PCIBus *bus, const char *audiodev))
  48 {
  49     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  50     soundhw[soundhw_count].name = name;
  51     soundhw[soundhw_count].descr = descr;
  52     soundhw[soundhw_count].isa = 0;
  53     soundhw[soundhw_count].init_pci = init_pci;
  54     soundhw_count++;
  55 }
  56
  57 void deprecated_register_soundhw(const char *name, const char *descr,
  58                                  int isa, const char *typename)
  59 {
  60     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  61     soundhw[soundhw_count].name = name;
  62     soundhw[soundhw_count].descr = descr;
  63     soundhw[soundhw_count].isa = isa;
  64     soundhw[soundhw_count].typename = typename;
  65     soundhw_count++;
  66 }
  67
  68 void show_valid_soundhw(void)
  69 {
  70     struct soundhw *c;
  71
  72     if (soundhw_count) {
  73          printf("Valid sound card names (comma separated):\n");
  74          for (c = soundhw; c->name; ++c) {
  75              printf ("%-11s %s\n", c->name, c->descr);
  76          }
  77     } else {
  78          printf("Machine has no user-selectable audio hardware "
  79                 "(it may or may not have always-present audio hardware).\n");
  80     }
  81 }
  82
  83 static struct soundhw *selected = NULL;
  84 static const char *audiodev_id;
  85
  86 void select_soundhw(const char *name, const char *audiodev)
  87 {
  88     struct soundhw *c;
  89
  90     if (selected) {
  91         error_setg(&error_fatal, "only one -soundhw option is allowed");
  92     }
  93
  94     for (c = soundhw; c->name; ++c) {
  95         if (g_str_equal(c->name, name)) {
  96             selected = c;
  97             audiodev_id = audiodev;
  98             break;
  99         }
 100     }
 101
 102     if (!c->name) {
 103         error_report("Unknown sound card name `%s'", name);
 104         show_valid_soundhw();
 105         exit(1);
 106     }
 107 }
 108
 109 void soundhw_init(void)
 110 {
 111     struct soundhw *c = selected;
 112     ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL);
 113     PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL);
 114     BusState *bus;
 115
 116     if (!c) {
 117         return;
 118     }
 119     if (c->isa) {
 120         if (!isa_bus) {
 121             error_report("ISA bus not available for %s", c->name);
 122             exit(1);
 123         }
 124         bus = BUS(isa_bus);
 125     } else {
 126         if (!pci_bus) {
 127             error_report("PCI bus not available for %s", c->name);
 128             exit(1);
 129         }
 130         bus = BUS(pci_bus);
 131     }
 132
 133     if (c->typename) {
 134         DeviceState *dev = qdev_new(c->typename);
 135         qdev_prop_set_string(dev, "audiodev", audiodev_id);
 136         qdev_realize_and_unref(dev, bus, &error_fatal);
 137     } else {
 138         assert(!c->isa);
 139         c->init_pci(pci_bus, audiodev_id);
 140     }
 141 }
 142