Archipelago » qemu

/*

 * PowerMac descriptor-based DMA 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 "vl.h"

#include "ppc_mac.h"

/* DBDMA: currently no op - should suffice right now */

static void dbdma_writeb (void *opaque,

                          target_phys_addr_t addr, uint32_t value)

{

    printf("%s: 0x" PADDRX " <= 0x%08x\n", __func__, addr, value);

}

static void dbdma_writew (void *opaque,

                          target_phys_addr_t addr, uint32_t value)

{

}

static void dbdma_writel (void *opaque,

                          target_phys_addr_t addr, uint32_t value)

{

}

static uint32_t dbdma_readb (void *opaque, target_phys_addr_t addr)

{

    printf("%s: 0x" PADDRX " => 0x00000000\n", __func__, addr);

    return 0;

}

static uint32_t dbdma_readw (void *opaque, target_phys_addr_t addr)

{

    return 0;

}

static uint32_t dbdma_readl (void *opaque, target_phys_addr_t addr)

{

    return 0;

}

static CPUWriteMemoryFunc *dbdma_write[] = {

    &dbdma_writeb,

    &dbdma_writew,

    &dbdma_writel,

};

static CPUReadMemoryFunc *dbdma_read[] = {

    &dbdma_readb,

    &dbdma_readw,

    &dbdma_readl,

};

void dbdma_init (int *dbdma_mem_index)

{

    *dbdma_mem_index = cpu_register_io_memory(0, dbdma_read, dbdma_write, NULL);

}