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/help_option.h"
  26 #include "qemu/error-report.h"
  27 #include "qom/object.h"
  28 #include "hw/isa/isa.h"
  29 #include "hw/pci/pci.h"
  30 #include "hw/audio/soundhw.h"
  31
  32 struct soundhw {
  33     const char *name;
  34     const char *descr;
  35     int enabled;
  36     int isa;
  37     union {
  38         int (*init_isa) (ISABus *bus);
  39         int (*init_pci) (PCIBus *bus);
  40     } init;
  41 };
  42
  43 static struct soundhw soundhw[9];
  44 static int soundhw_count;
  45
  46 void isa_register_soundhw(const char *name, const char *descr,
  47                           int (*init_isa)(ISABus *bus))
  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 = 1;
  53     soundhw[soundhw_count].init.init_isa = init_isa;
  54     soundhw_count++;
  55 }
  56
  57 void pci_register_soundhw(const char *name, const char *descr,
  58                           int (*init_pci)(PCIBus *bus))
  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 = 0;
  64     soundhw[soundhw_count].init.init_pci = init_pci;
  65     soundhw_count++;
  66 }
  67
  68 void select_soundhw(const char *optarg)
  69 {
  70     struct soundhw *c;
  71
  72     if (is_help_option(optarg)) {
  73     show_valid_cards:
  74
  75         if (soundhw_count) {
  76              printf("Valid sound card names (comma separated):\n");
  77              for (c = soundhw; c->name; ++c) {
  78                  printf ("%-11s %s\n", c->name, c->descr);
  79              }
  80              printf("\n-soundhw all will enable all of the above\n");
  81         } else {
  82              printf("Machine has no user-selectable audio hardware "
  83                     "(it may or may not have always-present audio hardware).\n");
  84         }
  85         exit(!is_help_option(optarg));
  86     }
  87     else {
  88         size_t l;
  89         const char *p;
  90         char *e;
  91         int bad_card = 0;
  92
  93         if (!strcmp(optarg, "all")) {
  94             for (c = soundhw; c->name; ++c) {
  95                 c->enabled = 1;
  96             }
  97             return;
  98         }
  99
 100         p = optarg;
 101         while (*p) {
 102             e = strchr(p, ',');
 103             l = !e ? strlen(p) : (size_t) (e - p);
 104
 105             for (c = soundhw; c->name; ++c) {
 106                 if (!strncmp(c->name, p, l) && !c->name[l]) {
 107                     c->enabled = 1;
 108                     break;
 109                 }
 110             }
 111
 112             if (!c->name) {
 113                 if (l > 80) {
 114                     error_report("Unknown sound card name (too big to show)");
 115                 }
 116                 else {
 117                     error_report("Unknown sound card name `%.*s'",
 118                                  (int) l, p);
 119                 }
 120                 bad_card = 1;
 121             }
 122             p += l + (e != NULL);
 123         }
 124
 125         if (bad_card) {
 126             goto show_valid_cards;
 127         }
 128     }
 129 }
 130
 131 void soundhw_init(void)
 132 {
 133     struct soundhw *c;
 134     ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL);
 135     PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL);
 136
 137     for (c = soundhw; c->name; ++c) {
 138         if (c->enabled) {
 139             if (c->isa) {
 140                 if (!isa_bus) {
 141                     error_report("ISA bus not available for %s", c->name);
 142                     exit(1);
 143                 }
 144                 c->init.init_isa(isa_bus);
 145             } else {
 146                 if (!pci_bus) {
 147                     error_report("PCI bus not available for %s", c->name);
 148                     exit(1);
 149                 }
 150                 c->init.init_pci(pci_bus);
 151             }
 152         }
 153     }
 154 }
 155