hw/macio.c

   1 /*
   2  * PowerMac MacIO device emulation
   3  *
   4  * Copyright (c) 2005-2007 Fabrice Bellard
   5  * Copyright (c) 2007 Jocelyn Mayer
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a copy
   8  * of this software and associated documentation files (the "Software"), to deal
   9  * in the Software without restriction, including without limitation the rights
  10  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11  * copies of the Software, and to permit persons to whom the Software is
  12  * furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included in
  15  * all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23  * THE SOFTWARE.
  24  */
  25 #include "hw.h"
  26 #include "ppc_mac.h"
  27 #include "pci.h"
  28 #include "escc.h"
  29
  30 typedef struct MacIOState
  31 {
  32     PCIDevice parent;
  33     int is_oldworld;
  34     MemoryRegion bar;
  35     MemoryRegion *pic_mem;
  36     MemoryRegion *dbdma_mem;
  37     MemoryRegion *cuda_mem;
  38     MemoryRegion *escc_mem;
  39     void *nvram;
  40     int nb_ide;
  41     MemoryRegion *ide_mem[4];
  42 } MacIOState;
  43
  44 static void macio_bar_setup(MacIOState *macio_state)
  45 {
  46     int i;
  47     MemoryRegion *bar = &macio_state->bar;
  48
  49     memory_region_init(bar, "macio", 0x80000);
  50     if (macio_state->pic_mem) {
  51         if (macio_state->is_oldworld) {
  52             /* Heathrow PIC */
  53             memory_region_add_subregion(bar, 0x00000, macio_state->pic_mem);
  54         } else {
  55             /* OpenPIC */
  56             memory_region_add_subregion(bar, 0x40000, macio_state->pic_mem);
  57         }
  58     }
  59     if (macio_state->dbdma_mem) {
  60         memory_region_add_subregion(bar, 0x08000, macio_state->dbdma_mem);
  61     }
  62     if (macio_state->escc_mem) {
  63         memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
  64     }
  65     if (macio_state->cuda_mem) {
  66         memory_region_add_subregion(bar, 0x16000, macio_state->cuda_mem);
  67     }
  68     for (i = 0; i < macio_state->nb_ide; i++) {
  69         if (macio_state->ide_mem[i]) {
  70             memory_region_add_subregion(bar, 0x1f000 + (i * 0x1000),
  71                                         macio_state->ide_mem[i]);
  72         }
  73     }
  74     if (macio_state->nvram != NULL)
  75         macio_nvram_setup_bar(macio_state->nvram, bar, 0x60000);
  76 }
  77
  78 static int macio_initfn(PCIDevice *d)
  79 {
  80     d->config[0x3d] = 0x01; // interrupt on pin 1
  81     return 0;
  82 }
  83
  84 static void macio_class_init(ObjectClass *klass, void *data)
  85 {
  86     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
  87
  88     k->init = macio_initfn;
  89     k->vendor_id = PCI_VENDOR_ID_APPLE;
  90     k->class_id = PCI_CLASS_OTHERS << 8;
  91 }
  92
  93 static DeviceInfo macio_info = {
  94     .name = "macio",
  95     .size = sizeof(MacIOState),
  96     .class_init = macio_class_init,
  97 };
  98
  99 static void macio_register(void)
 100 {
 101     pci_qdev_register(&macio_info);
 102 }
 103
 104 device_init(macio_register);
 105
 106 void macio_init (PCIBus *bus, int device_id, int is_oldworld,
 107                  MemoryRegion *pic_mem, MemoryRegion *dbdma_mem,
 108                  MemoryRegion *cuda_mem, void *nvram,
 109                  int nb_ide, MemoryRegion **ide_mem,
 110                  MemoryRegion *escc_mem)
 111 {
 112     PCIDevice *d;
 113     MacIOState *macio_state;
 114     int i;
 115
 116     d = pci_create_simple(bus, -1, "macio");
 117
 118     macio_state = DO_UPCAST(MacIOState, parent, d);
 119     macio_state->is_oldworld = is_oldworld;
 120     macio_state->pic_mem = pic_mem;
 121     macio_state->dbdma_mem = dbdma_mem;
 122     macio_state->cuda_mem = cuda_mem;
 123     macio_state->escc_mem = escc_mem;
 124     macio_state->nvram = nvram;
 125     if (nb_ide > 4)
 126         nb_ide = 4;
 127     macio_state->nb_ide = nb_ide;
 128     for (i = 0; i < nb_ide; i++)
 129         macio_state->ide_mem[i] = ide_mem[i];
 130     for (; i < 4; i++)
 131         macio_state->ide_mem[i] = NULL;
 132     /* Note: this code is strongly inspirated from the corresponding code
 133        in PearPC */
 134
 135     pci_config_set_device_id(d->config, device_id);
 136
 137     macio_bar_setup(macio_state);
 138     pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &macio_state->bar);
 139 }