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/pc.h>

#include <hw/pci.h>

#include <hw/isa.h>

#include "block.h"

#include "block_int.h"

#include "sysemu.h"

#include "dma.h"

#include <hw/ide/pci.h>

static uint32_t bmdma_readb(void *opaque, uint32_t addr)

{

    BMDMAState *bm = opaque;

    uint32_t val;

    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_writeb(void *opaque, uint32_t addr, uint32_t val)

{

    BMDMAState *bm = opaque;

#ifdef DEBUG_IDE

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

#endif

    switch (addr & 3) {

    case 2:

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

        break;

    default:;

    }

}

static void bmdma_map(PCIDevice *pci_dev, int region_num,

                    pcibus_t addr, pcibus_t size, int type)

{

    PCIIDEState *d = DO_UPCAST(PCIIDEState, dev, pci_dev);

    int i;

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

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

        register_ioport_write(addr, 1, 1, bmdma_cmd_writeb, bm);

        register_ioport_write(addr + 1, 3, 1, bmdma_writeb, bm);

        register_ioport_read(addr, 4, 1, bmdma_readb, bm);

        iorange_init(&bm->addr_ioport, &bmdma_addr_ioport_ops, addr + 4, 4);

        ioport_register(&bm->addr_ioport);

        addr += 8;

    }

}

static void via_reset(void *opaque)

{

    PCIIDEState *d = opaque;

    uint8_t *pci_conf = d->dev.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) {

    int i;

    struct {

        int iobase;

        int iobase2;

        int isairq;

    } port_info[] = {

        {0x1f0, 0x3f6, 14},

        {0x170, 0x376, 15},

    };

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

        ide_bus_new(&d->bus[i], &d->dev.qdev, i);

        ide_init_ioport(&d->bus[i], port_info[i].iobase, port_info[i].iobase2);

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

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

        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 = DO_UPCAST(PCIIDEState, dev, dev);;

    uint8_t *pci_conf = d->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);

    pci_register_bar(&d->dev, 4, 0x10,

                           PCI_BASE_ADDRESS_SPACE_IO, bmdma_map);

    vmstate_register(&dev->qdev, 0, &vmstate_ide_pci, d);

    vt82c686b_init_ports(d);

    return 0;

}

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 PCIDeviceInfo via_ide_info = {

    .qdev.name    = "via-ide",

    .qdev.size    = sizeof(PCIIDEState),

    .qdev.no_user = 1,

    .init         = vt82c686b_ide_initfn,

    .vendor_id    = PCI_VENDOR_ID_VIA,

    .device_id    = PCI_DEVICE_ID_VIA_IDE,

    .revision     = 0x06,

    .class_id     = PCI_CLASS_STORAGE_IDE,

};

static void via_ide_register(void)

{

    pci_qdev_register(&via_ide_info);

}

device_init(via_ide_register);