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-common.h"
  26 #include "qemu/help_option.h"
  27 #include "qemu/error-report.h"
  28 #include "qom/object.h"
  29 #include "hw/isa/isa.h"
  30 #include "hw/pci/pci.h"
  31 #include "hw/audio/soundhw.h"
  32
  33 struct soundhw {
  34     const char *name;
  35     const char *descr;
  36     int enabled;
  37     int isa;
  38     union {
  39         int (*init_isa) (ISABus *bus);
  40         int (*init_pci) (PCIBus *bus);
  41     } init;
  42 };
  43
  44 static struct soundhw soundhw[9];
  45 static int soundhw_count;
  46
  47 void isa_register_soundhw(const char *name, const char *descr,
  48                           int (*init_isa)(ISABus *bus))
  49 {
  50     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  51     soundhw[soundhw_count].name = name;
  52     soundhw[soundhw_count].descr = descr;
  53     soundhw[soundhw_count].isa = 1;
  54     soundhw[soundhw_count].init.init_isa = init_isa;
  55     soundhw_count++;
  56 }
  57
  58 void pci_register_soundhw(const char *name, const char *descr,
  59                           int (*init_pci)(PCIBus *bus))
  60 {
  61     assert(soundhw_count < ARRAY_SIZE(soundhw) - 1);
  62     soundhw[soundhw_count].name = name;
  63     soundhw[soundhw_count].descr = descr;
  64     soundhw[soundhw_count].isa = 0;
  65     soundhw[soundhw_count].init.init_pci = init_pci;
  66     soundhw_count++;
  67 }
  68
  69 void select_soundhw(const char *optarg)
  70 {
  71     struct soundhw *c;
  72
  73     if (is_help_option(optarg)) {
  74     show_valid_cards:
  75
  76         if (soundhw_count) {
  77              printf("Valid sound card names (comma separated):\n");
  78              for (c = soundhw; c->name; ++c) {
  79                  printf ("%-11s %s\n", c->name, c->descr);
  80              }
  81              printf("\n-soundhw all will enable all of the above\n");
  82         } else {
  83              printf("Machine has no user-selectable audio hardware "
  84                     "(it may or may not have always-present audio hardware).\n");
  85         }
  86         exit(!is_help_option(optarg));
  87     }
  88     else {
  89         size_t l;
  90         const char *p;
  91         char *e;
  92         int bad_card = 0;
  93
  94         if (!strcmp(optarg, "all")) {
  95             for (c = soundhw; c->name; ++c) {
  96                 c->enabled = 1;
  97             }
  98             return;
  99         }
 100
 101         p = optarg;
 102         while (*p) {
 103             e = strchr(p, ',');
 104             l = !e ? strlen(p) : (size_t) (e - p);
 105
 106             for (c = soundhw; c->name; ++c) {
 107                 if (!strncmp(c->name, p, l) && !c->name[l]) {
 108                     c->enabled = 1;
 109                     break;
 110                 }
 111             }
 112
 113             if (!c->name) {
 114                 if (l > 80) {
 115                     error_report("Unknown sound card name (too big to show)");
 116                 }
 117                 else {
 118                     error_report("Unknown sound card name `%.*s'",
 119                                  (int) l, p);
 120                 }
 121                 bad_card = 1;
 122             }
 123             p += l + (e != NULL);
 124         }
 125
 126         if (bad_card) {
 127             goto show_valid_cards;
 128         }
 129     }
 130 }
 131
 132 void soundhw_init(void)
 133 {
 134     struct soundhw *c;
 135     ISABus *isa_bus = (ISABus *) object_resolve_path_type("", TYPE_ISA_BUS, NULL);
 136     PCIBus *pci_bus = (PCIBus *) object_resolve_path_type("", TYPE_PCI_BUS, NULL);
 137
 138     for (c = soundhw; c->name; ++c) {
 139         if (c->enabled) {
 140             if (c->isa) {
 141                 if (!isa_bus) {
 142                     error_report("ISA bus not available for %s", c->name);
 143                     exit(1);
 144                 }
 145                 c->init.init_isa(isa_bus);
 146             } else {
 147                 if (!pci_bus) {
 148                     error_report("PCI bus not available for %s", c->name);
 149                     exit(1);
 150                 }
 151                 c->init.init_pci(pci_bus);
 152             }
 153         }
 154     }
 155 }
 156