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/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
  32struct 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
  43static struct soundhw soundhw[9];
  44static int soundhw_count;
  45
  46void 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
  57void 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
  68void 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
 131void 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
 156