LXR qemu/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
  33struct 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
  44static struct soundhw soundhw[9];
  45static int soundhw_count;
  46
  47void 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
  58void 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
  69void 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
 132void 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
 157