Archipelago » qemu

/*

 * QEMU IDE Emulation: PCI VIA82C686B support.

 *

 * Copyright (c) 2003 Fabrice Bellard

 * Copyright (c) 2006 Openedhand Ltd.

 * Copyright (c) 2010 Huacai Chen <zltjiangshi@gmail.com>

 *

 * 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/hw.h>

#include <hw/i386/pc.h>

#include <hw/pci/pci.h>

#include <hw/isa/isa.h>

#include "block/block.h"

#include "sysemu/sysemu.h"

#include "sysemu/dma.h"

#include <hw/ide/pci.h>

static uint64_t bmdma_read(void *opaque, hwaddr addr,

                           unsigned size)

{

    BMDMAState *bm = opaque;

    uint32_t val;

    if (size != 1) {

        return ((uint64_t)1 << (size * 8)) - 1;

    }

    switch (addr & 3) {

    case 0:

        val = bm->cmd;

        break;

    case 2:

        val = bm->status;

        break;

    default:

        val = 0xff;

        break;

    }

#ifdef DEBUG_IDE

    printf("bmdma: readb 0x%02x : 0x%02x\n", addr, val);

#endif

    return val;

}

static void bmdma_write(void *opaque, hwaddr addr,

                        uint64_t val, unsigned size)

{

    BMDMAState *bm = opaque;

    if (size != 1) {

        return;

    }

#ifdef DEBUG_IDE

    printf("bmdma: writeb 0x%02x : 0x%02x\n", addr, val);

#endif

    switch (addr & 3) {

    case 0:

        bmdma_cmd_writeb(bm, val);

        break;

    case 2:

        bm->status = (val & 0x60) | (bm->status & 1) | (bm->status & ~val & 0x06);

        break;

    default:;

    }

}

static const MemoryRegionOps via_bmdma_ops = {

    .read = bmdma_read,

    .write = bmdma_write,

};

static void bmdma_setup_bar(PCIIDEState *d)

{

    int i;

    memory_region_init(&d->bmdma_bar, OBJECT(d), "via-bmdma-container", 16);

    for(i = 0;i < 2; i++) {

        BMDMAState *bm = &d->bmdma[i];

        memory_region_init_io(&bm->extra_io, OBJECT(d), &via_bmdma_ops, bm,

                              "via-bmdma", 4);

        memory_region_add_subregion(&d->bmdma_bar, i * 8, &bm->extra_io);

        memory_region_init_io(&bm->addr_ioport, OBJECT(d),

                              &bmdma_addr_ioport_ops, bm, "bmdma", 4);

        memory_region_add_subregion(&d->bmdma_bar, i * 8 + 4, &bm->addr_ioport);

    }

}

static void via_reset(void *opaque)

{

    PCIIDEState *d = opaque;

    PCIDevice *pd = PCI_DEVICE(d);

    uint8_t *pci_conf = pd->config;

    int i;

    for (i = 0; i < 2; i++) {

        ide_bus_reset(&d->bus[i]);

    }

    pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_WAIT);

    pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |

                 PCI_STATUS_DEVSEL_MEDIUM);

    pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, 0x000001f0);

    pci_set_long(pci_conf + PCI_BASE_ADDRESS_1, 0x000003f4);

    pci_set_long(pci_conf + PCI_BASE_ADDRESS_2, 0x00000170);

    pci_set_long(pci_conf + PCI_BASE_ADDRESS_3, 0x00000374);

    pci_set_long(pci_conf + PCI_BASE_ADDRESS_4, 0x0000cc01); /* BMIBA: 20-23h */

    pci_set_long(pci_conf + PCI_INTERRUPT_LINE, 0x0000010e);

    /* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/

    pci_set_long(pci_conf + 0x40, 0x0a090600);

    /* IDE misc configuration 1/2/3 */

    pci_set_long(pci_conf + 0x44, 0x00c00068);

    /* IDE Timing control */

    pci_set_long(pci_conf + 0x48, 0xa8a8a8a8);

    /* IDE Address Setup Time */

    pci_set_long(pci_conf + 0x4c, 0x000000ff);

    /* UltraDMA Extended Timing Control*/

    pci_set_long(pci_conf + 0x50, 0x07070707);

    /* UltraDMA FIFO Control */

    pci_set_long(pci_conf + 0x54, 0x00000004);

    /* IDE primary sector size */

    pci_set_long(pci_conf + 0x60, 0x00000200);

    /* IDE secondary sector size */

    pci_set_long(pci_conf + 0x68, 0x00000200);

    /* PCI PM Block */

    pci_set_long(pci_conf + 0xc0, 0x00020001);

}

static void vt82c686b_init_ports(PCIIDEState *d) {

    static const struct {

        int iobase;

        int iobase2;

        int isairq;

    } port_info[] = {

        {0x1f0, 0x3f6, 14},

        {0x170, 0x376, 15},

    };

    int i;

    for (i = 0; i < 2; i++) {

        ide_bus_new(&d->bus[i], sizeof(d->bus[i]), DEVICE(d), i, 2);

        ide_init_ioport(&d->bus[i], NULL, port_info[i].iobase,

                        port_info[i].iobase2);

        ide_init2(&d->bus[i], isa_get_irq(NULL, port_info[i].isairq));

        bmdma_init(&d->bus[i], &d->bmdma[i], d);

        d->bmdma[i].bus = &d->bus[i];

        qemu_add_vm_change_state_handler(d->bus[i].dma->ops->restart_cb,

                                         &d->bmdma[i].dma);

    }

}

/* via ide func */

static int vt82c686b_ide_initfn(PCIDevice *dev)

{

    PCIIDEState *d = PCI_IDE(dev);

    uint8_t *pci_conf = dev->config;

    pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy ATA mode */

    pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);

    qemu_register_reset(via_reset, d);

    bmdma_setup_bar(d);

    pci_register_bar(dev, 4, PCI_BASE_ADDRESS_SPACE_IO, &d->bmdma_bar);

    vmstate_register(DEVICE(dev), 0, &vmstate_ide_pci, d);

    vt82c686b_init_ports(d);

    return 0;

}

static void vt82c686b_ide_exitfn(PCIDevice *dev)

{

    PCIIDEState *d = PCI_IDE(dev);

    unsigned i;

    for (i = 0; i < 2; ++i) {

        memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].extra_io);

        memory_region_destroy(&d->bmdma[i].extra_io);

        memory_region_del_subregion(&d->bmdma_bar, &d->bmdma[i].addr_ioport);

        memory_region_destroy(&d->bmdma[i].addr_ioport);

    }

    memory_region_destroy(&d->bmdma_bar);

}

void vt82c686b_ide_init(PCIBus *bus, DriveInfo **hd_table, int devfn)

{

    PCIDevice *dev;

    dev = pci_create_simple(bus, devfn, "via-ide");

    pci_ide_create_devs(dev, hd_table);

}

static void via_ide_class_init(ObjectClass *klass, void *data)

{

    DeviceClass *dc = DEVICE_CLASS(klass);

    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);

    k->init = vt82c686b_ide_initfn;

    k->exit = vt82c686b_ide_exitfn;

    k->vendor_id = PCI_VENDOR_ID_VIA;

    k->device_id = PCI_DEVICE_ID_VIA_IDE;

    k->revision = 0x06;

    k->class_id = PCI_CLASS_STORAGE_IDE;

    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);

    dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */

}

static const TypeInfo via_ide_info = {

    .name          = "via-ide",

    .parent        = TYPE_PCI_IDE,

    .class_init    = via_ide_class_init,

};

static void via_ide_register_types(void)

{

    type_register_static(&via_ide_info);

}

type_init(via_ide_register_types)