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/isa/isa.h"
  31 #include "hw/pci/pci.h"
  32 #include "hw/audio/soundhw.h"
  33
  34 struct soundhw {
  35     const char *name;
  36     const char *descr;
  37     const char *typename;
  38     int isa;
  39     int (*init_pci) (PCIBus *bus);
  40 };
  41
  42 static struct soundhw soundhw[9];
  43 static int soundhw_count;
  44
  45 void pci_register_soundhw(const char *name, const char *descr,
  46                           int (*init_pci)(PCIBus *bus))
  47 {
  48     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  49     soundhw[soundhw_count].name = name;
  50     soundhw[soundhw_count].descr = descr;
  51     soundhw[soundhw_count].isa = 0;
  52     soundhw[soundhw_count].init_pci = init_pci;
  53     soundhw_count++;
  54 }
  55
  56 void deprecated_register_soundhw(const char *name, const char *descr,
  57                                  int isa, const char *typename)
  58 {
  59     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  60     soundhw[soundhw_count].name = name;
  61     soundhw[soundhw_count].descr = descr;
  62     soundhw[soundhw_count].isa = isa;
  63     soundhw[soundhw_count].typename = typename;
  64     soundhw_count++;
  65 }
  66
  67 void show_valid_soundhw(void)
  68 {
  69     struct soundhw *c;
  70
  71     if (soundhw_count) {
  72          printf("Valid sound card names (comma separated):\n");
  73          for (c = soundhw; c->name; ++c) {
  74              printf ("%-11s %s\n", c->name, c->descr);
  75          }
  76     } else {
  77          printf("Machine has no user-selectable audio hardware "
  78                 "(it may or may not have always-present audio hardware).\n");
  79     }
  80 }
  81
  82 static struct soundhw *selected = NULL;
  83
  84 void select_soundhw(const char *optarg)
  85 {
  86     struct soundhw *c;
  87
  88     if (selected) {
  89         error_setg(&error_fatal, "only one -soundhw option is allowed");
  90     }
  91
  92     for (c = soundhw; c->name; ++c) {
  93         if (g_str_equal(c->name, optarg)) {
  94             selected = c;
  95             break;
  96         }
  97     }
  98
  99     if (!c->name) {
 100         error_report("Unknown sound card name `%s'", optarg);
 101         show_valid_soundhw();
 102         exit(1);
 103     }
 104 }
 105
 106 void soundhw_init(void)
 107 {
 108     struct soundhw *c = selected;
 109     ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL);
 110     PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL);
 111     BusState *bus;
 112
 113     if (!c) {
 114         return;
 115     }
 116     if (c->isa) {
 117         if (!isa_bus) {
 118             error_report("ISA bus not available for %s", c->name);
 119             exit(1);
 120         }
 121         bus = BUS(isa_bus);
 122     } else {
 123         if (!pci_bus) {
 124             error_report("PCI bus not available for %s", c->name);
 125             exit(1);
 126         }
 127         bus = BUS(pci_bus);
 128     }
 129
 130     if (c->typename) {
 131         DeviceState *dev = qdev_new(c->typename);
 132         qdev_realize_and_unref(dev, bus, &error_fatal);
 133     } else {
 134         assert(!c->isa);
 135         c->init_pci(pci_bus);
 136     }
 137 }
 138