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 macio_state_t macio_state_t;
  31 struct macio_state_t {
  32     int is_oldworld;
  33     MemoryRegion bar;
  34     MemoryRegion *pic_mem;
  35     MemoryRegion *dbdma_mem;
  36     MemoryRegion *cuda_mem;
  37     MemoryRegion *escc_mem;
  38     void *nvram;
  39     int nb_ide;
  40     MemoryRegion *ide_mem[4];
  41 };
  42
  43 static void macio_bar_setup(macio_state_t *macio_state)
  44 {
  45     int i;
  46     MemoryRegion *bar = &macio_state->bar;
  47
  48     memory_region_init(bar, "macio", 0x80000);
  49     if (macio_state->pic_mem) {
  50         if (macio_state->is_oldworld) {
  51             /* Heathrow PIC */
  52             memory_region_add_subregion(bar, 0x00000, macio_state->pic_mem);
  53         } else {
  54             /* OpenPIC */
  55             memory_region_add_subregion(bar, 0x40000, macio_state->pic_mem);
  56         }
  57     }
  58     if (macio_state->dbdma_mem) {
  59         memory_region_add_subregion(bar, 0x08000, macio_state->dbdma_mem);
  60     }
  61     if (macio_state->escc_mem) {
  62         memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
  63     }
  64     if (macio_state->cuda_mem) {
  65         memory_region_add_subregion(bar, 0x16000, macio_state->cuda_mem);
  66     }
  67     for (i = 0; i < macio_state->nb_ide; i++) {
  68         if (macio_state->ide_mem[i]) {
  69             memory_region_add_subregion(bar, 0x1f000 + (i * 0x1000),
  70                                         macio_state->ide_mem[i]);
  71         }
  72     }
  73     if (macio_state->nvram != NULL)
  74         macio_nvram_setup_bar(macio_state->nvram, bar, 0x60000);
  75 }
  76
  77 void macio_init (PCIBus *bus, int device_id, int is_oldworld,
  78                  MemoryRegion *pic_mem, MemoryRegion *dbdma_mem,
  79                  MemoryRegion *cuda_mem, void *nvram,
  80                  int nb_ide, MemoryRegion **ide_mem,
  81                  MemoryRegion *escc_mem)
  82 {
  83     PCIDevice *d;
  84     macio_state_t *macio_state;
  85     int i;
  86
  87     d = pci_register_device(bus, "macio",
  88                             sizeof(PCIDevice) + sizeof(macio_state_t),
  89                             -1, NULL, NULL);
  90     macio_state = (macio_state_t *)(d + 1);
  91     macio_state->is_oldworld = is_oldworld;
  92     macio_state->pic_mem = pic_mem;
  93     macio_state->dbdma_mem = dbdma_mem;
  94     macio_state->cuda_mem = cuda_mem;
  95     macio_state->escc_mem = escc_mem;
  96     macio_state->nvram = nvram;
  97     if (nb_ide > 4)
  98         nb_ide = 4;
  99     macio_state->nb_ide = nb_ide;
 100     for (i = 0; i < nb_ide; i++)
 101         macio_state->ide_mem[i] = ide_mem[i];
 102     for (; i < 4; i++)
 103         macio_state->ide_mem[i] = NULL;
 104     /* Note: this code is strongly inspirated from the corresponding code
 105        in PearPC */
 106
 107     pci_config_set_vendor_id(d->config, PCI_VENDOR_ID_APPLE);
 108     pci_config_set_device_id(d->config, device_id);
 109     pci_config_set_class(d->config, PCI_CLASS_OTHERS << 8);
 110
 111     d->config[0x3d] = 0x01; // interrupt on pin 1
 112
 113     macio_bar_setup(macio_state);
 114     pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &macio_state->bar);
 115 }