qemu/hw/macio.c

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/*
* PowerMac MacIO device emulation
*
* Copyright (c) 2005-2007 Fabrice Bellard
* Copyright (c) 2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw.h"
#include "ppc_mac.h"
#include "pci.h"
#include "escc.h"
typedef struct MacIOState
{
PCIDevice parent;
int is_oldworld;
MemoryRegion bar;
MemoryRegion *pic_mem;
MemoryRegion *dbdma_mem;
MemoryRegion *cuda_mem;
MemoryRegion *escc_mem;
void *nvram;
int nb_ide;
MemoryRegion *ide_mem[4];
} MacIOState;
static void macio_bar_setup(MacIOState *macio_state)
{
int i;
MemoryRegion *bar = &macio_state->bar;
memory_region_init(bar, "macio", 0x80000);
if (macio_state->pic_mem) {
if (macio_state->is_oldworld) {
/* Heathrow PIC */
memory_region_add_subregion(bar, 0x00000, macio_state->pic_mem);
} else {
/* OpenPIC */
memory_region_add_subregion(bar, 0x40000, macio_state->pic_mem);
}
}
if (macio_state->dbdma_mem) {
memory_region_add_subregion(bar, 0x08000, macio_state->dbdma_mem);
}
if (macio_state->escc_mem) {
memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
}
if (macio_state->cuda_mem) {
memory_region_add_subregion(bar, 0x16000, macio_state->cuda_mem);
}
for (i = 0; i < macio_state->nb_ide; i++) {
if (macio_state->ide_mem[i]) {
memory_region_add_subregion(bar, 0x1f000 + (i * 0x1000),
macio_state->ide_mem[i]);
}
}
if (macio_state->nvram != NULL)
macio_nvram_setup_bar(macio_state->nvram, bar, 0x60000);
}
static int macio_initfn(PCIDevice *d)
{
d->config[0x3d] = 0x01; // interrupt on pin 1
return 0;
}
static void macio_class_init(ObjectClass *klass, void *data)
{
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->init = macio_initfn;
k->vendor_id = PCI_VENDOR_ID_APPLE;
k->class_id = PCI_CLASS_OTHERS << 8;
}
static TypeInfo macio_info = {
.name = "macio",
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(MacIOState),
.class_init = macio_class_init,
};
static void macio_register_types(void)
{
type_register_static(&macio_info);
}
type_init(macio_register_types)
void macio_init (PCIBus *bus, int device_id, int is_oldworld,
MemoryRegion *pic_mem, MemoryRegion *dbdma_mem,
MemoryRegion *cuda_mem, void *nvram,
int nb_ide, MemoryRegion **ide_mem,
MemoryRegion *escc_mem)
{
PCIDevice *d;
MacIOState *macio_state;
int i;
d = pci_create_simple(bus, -1, "macio");
macio_state = DO_UPCAST(MacIOState, parent, d);
macio_state->is_oldworld = is_oldworld;
macio_state->pic_mem = pic_mem;
macio_state->dbdma_mem = dbdma_mem;
macio_state->cuda_mem = cuda_mem;
macio_state->escc_mem = escc_mem;
macio_state->nvram = nvram;
if (nb_ide > 4)
nb_ide = 4;
macio_state->nb_ide = nb_ide;
for (i = 0; i < nb_ide; i++)
macio_state->ide_mem[i] = ide_mem[i];
for (; i < 4; i++)
macio_state->ide_mem[i] = NULL;
/* Note: this code is strongly inspirated from the corresponding code
in PearPC */
pci_config_set_device_id(d->config, device_id);
macio_bar_setup(macio_state);
pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &macio_state->bar);
}