Archipelago » qemu

/*

 * 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"

typedef struct macio_state_t macio_state_t;

struct macio_state_t {

    int is_oldworld;

    int pic_mem_index;

    int dbdma_mem_index;

    int cuda_mem_index;

    void *nvram;

    int nb_ide;

    int ide_mem_index[4];

};

static void macio_map (PCIDevice *pci_dev, int region_num,

                       uint32_t addr, uint32_t size, int type)

{

    macio_state_t *macio_state;

    int i;

    macio_state = (macio_state_t *)(pci_dev + 1);

    if (macio_state->pic_mem_index >= 0) {

        if (macio_state->is_oldworld) {

            /* Heathrow PIC */

            cpu_register_physical_memory(addr + 0x00000, 0x1000,

                                         macio_state->pic_mem_index);

        } else {

            /* OpenPIC */

            cpu_register_physical_memory(addr + 0x40000, 0x40000,

                                         macio_state->pic_mem_index);

        }

    }

    if (macio_state->dbdma_mem_index >= 0) {

        cpu_register_physical_memory(addr + 0x08000, 0x1000,

                                     macio_state->dbdma_mem_index);

    }

    if (macio_state->cuda_mem_index >= 0) {

        cpu_register_physical_memory(addr + 0x16000, 0x2000,

                                     macio_state->cuda_mem_index);

    }

    for (i = 0; i < macio_state->nb_ide; i++) {

        if (macio_state->ide_mem_index[i] >= 0) {

            cpu_register_physical_memory(addr + 0x1f000 + (i * 0x1000), 0x1000,

                                         macio_state->ide_mem_index[i]);

        }

    }

    if (macio_state->nvram != NULL)

        macio_nvram_map(macio_state->nvram, addr + 0x60000);

}

void macio_init (PCIBus *bus, int device_id, int is_oldworld, int pic_mem_index,

                 int dbdma_mem_index, int cuda_mem_index, void *nvram,

                 int nb_ide, int *ide_mem_index)

{

    PCIDevice *d;

    macio_state_t *macio_state;

    int i;

    d = pci_register_device(bus, "macio",

                            sizeof(PCIDevice) + sizeof(macio_state_t),

                            -1, NULL, NULL);

    macio_state = (macio_state_t *)(d + 1);

    macio_state->is_oldworld = is_oldworld;

    macio_state->pic_mem_index = pic_mem_index;

    macio_state->dbdma_mem_index = dbdma_mem_index;

    macio_state->cuda_mem_index = cuda_mem_index;

    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_index[i] = ide_mem_index[i];

    for (; i < 4; i++)

        macio_state->ide_mem_index[i] = -1;

    /* Note: this code is strongly inspirated from the corresponding code

       in PearPC */

    d->config[0x00] = 0x6b; // vendor_id

    d->config[0x01] = 0x10;

    d->config[0x02] = device_id;

    d->config[0x03] = device_id >> 8;

    d->config[0x0a] = 0x00; // class_sub = pci2pci

    d->config[0x0b] = 0xff; // class_base = bridge

    d->config[0x0e] = 0x00; // header_type

    d->config[0x3d] = 0x01; // interrupt on pin 1

    pci_register_io_region(d, 0, 0x80000,

                           PCI_ADDRESS_SPACE_MEM, macio_map);

}