root / hw / ide / qdev.c @ 7267c094
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/*
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* ide bus support for qdev.
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*
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* Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <hw/hw.h> |
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#include "dma.h" |
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#include "qemu-error.h" |
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#include <hw/ide/internal.h> |
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#include "blockdev.h" |
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#include "sysemu.h" |
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/* --------------------------------- */
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static char *idebus_get_fw_dev_path(DeviceState *dev); |
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static struct BusInfo ide_bus_info = { |
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.name = "IDE",
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.size = sizeof(IDEBus),
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.get_fw_dev_path = idebus_get_fw_dev_path, |
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.props = (Property[]) { |
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DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1), |
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DEFINE_PROP_END_OF_LIST(), |
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}, |
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}; |
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void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id) |
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{ |
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qbus_create_inplace(&idebus->qbus, &ide_bus_info, dev, NULL);
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idebus->bus_id = bus_id; |
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} |
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static char *idebus_get_fw_dev_path(DeviceState *dev) |
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{ |
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char path[30]; |
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snprintf(path, sizeof(path), "%s@%d", qdev_fw_name(dev), |
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((IDEBus*)dev->parent_bus)->bus_id); |
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return strdup(path);
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} |
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static int ide_qdev_init(DeviceState *qdev, DeviceInfo *base) |
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{ |
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IDEDevice *dev = DO_UPCAST(IDEDevice, qdev, qdev); |
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IDEDeviceInfo *info = DO_UPCAST(IDEDeviceInfo, qdev, base); |
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus); |
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if (!dev->conf.bs) {
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error_report("No drive specified");
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goto err;
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} |
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if (dev->unit == -1) { |
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dev->unit = bus->master ? 1 : 0; |
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} |
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switch (dev->unit) {
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case 0: |
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if (bus->master) {
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error_report("IDE unit %d is in use", dev->unit);
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goto err;
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} |
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bus->master = dev; |
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break;
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case 1: |
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if (bus->slave) {
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error_report("IDE unit %d is in use", dev->unit);
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goto err;
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} |
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bus->slave = dev; |
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break;
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default:
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error_report("Invalid IDE unit %d", dev->unit);
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goto err;
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} |
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return info->init(dev);
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err:
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return -1; |
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} |
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static void ide_qdev_register(IDEDeviceInfo *info) |
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{ |
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info->qdev.init = ide_qdev_init; |
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info->qdev.bus_info = &ide_bus_info; |
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qdev_register(&info->qdev); |
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} |
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IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive)
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{ |
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DeviceState *dev; |
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dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd"); |
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qdev_prop_set_uint32(dev, "unit", unit);
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qdev_prop_set_drive_nofail(dev, "drive", drive->bdrv);
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qdev_init_nofail(dev); |
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return DO_UPCAST(IDEDevice, qdev, dev);
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} |
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void ide_get_bs(BlockDriverState *bs[], BusState *qbus)
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{ |
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, qbus); |
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bs[0] = bus->master ? bus->master->conf.bs : NULL; |
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bs[1] = bus->slave ? bus->slave->conf.bs : NULL; |
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} |
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/* --------------------------------- */
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typedef struct IDEDrive { |
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IDEDevice dev; |
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} IDEDrive; |
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static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind) |
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{ |
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus); |
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IDEState *s = bus->ifs + dev->unit; |
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const char *serial; |
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DriveInfo *dinfo; |
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if (dev->conf.discard_granularity && dev->conf.discard_granularity != 512) { |
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error_report("discard_granularity must be 512 for ide");
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return -1; |
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} |
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serial = dev->serial; |
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if (!serial) {
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/* try to fall back to value set with legacy -drive serial=... */
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dinfo = drive_get_by_blockdev(dev->conf.bs); |
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if (*dinfo->serial) {
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serial = dinfo->serial; |
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} |
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} |
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if (ide_init_drive(s, dev->conf.bs, kind, dev->version, serial) < 0) { |
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return -1; |
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} |
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if (!dev->version) {
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dev->version = g_strdup(s->version); |
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} |
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if (!dev->serial) {
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dev->serial = g_strdup(s->drive_serial_str); |
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} |
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add_boot_device_path(dev->conf.bootindex, &dev->qdev, |
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dev->unit ? "/disk@1" : "/disk@0"); |
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return 0; |
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} |
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static int ide_hd_initfn(IDEDevice *dev) |
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{ |
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return ide_dev_initfn(dev, IDE_HD);
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} |
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static int ide_cd_initfn(IDEDevice *dev) |
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{ |
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return ide_dev_initfn(dev, IDE_CD);
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} |
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static int ide_drive_initfn(IDEDevice *dev) |
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{ |
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DriveInfo *dinfo = drive_get_by_blockdev(dev->conf.bs); |
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return ide_dev_initfn(dev, dinfo->media_cd ? IDE_CD : IDE_HD);
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} |
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#define DEFINE_IDE_DEV_PROPERTIES() \
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DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \ |
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DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
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DEFINE_PROP_STRING("serial", IDEDrive, dev.serial)
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static IDEDeviceInfo ide_dev_info[] = {
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{ |
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.qdev.name = "ide-hd",
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.qdev.fw_name = "drive",
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.qdev.desc = "virtual IDE disk",
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.qdev.size = sizeof(IDEDrive),
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.init = ide_hd_initfn, |
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.qdev.props = (Property[]) { |
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DEFINE_IDE_DEV_PROPERTIES(), |
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DEFINE_PROP_END_OF_LIST(), |
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} |
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},{ |
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.qdev.name = "ide-cd",
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.qdev.fw_name = "drive",
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.qdev.desc = "virtual IDE CD-ROM",
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.qdev.size = sizeof(IDEDrive),
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.init = ide_cd_initfn, |
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.qdev.props = (Property[]) { |
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DEFINE_IDE_DEV_PROPERTIES(), |
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DEFINE_PROP_END_OF_LIST(), |
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} |
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},{ |
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.qdev.name = "ide-drive", /* legacy -device ide-drive */ |
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.qdev.fw_name = "drive",
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.qdev.desc = "virtual IDE disk or CD-ROM (legacy)",
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.qdev.size = sizeof(IDEDrive),
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.init = ide_drive_initfn, |
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.qdev.props = (Property[]) { |
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DEFINE_IDE_DEV_PROPERTIES(), |
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DEFINE_PROP_END_OF_LIST(), |
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} |
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} |
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}; |
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static void ide_dev_register(void) |
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{ |
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int i;
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for (i = 0; i < ARRAY_SIZE(ide_dev_info); i++) { |
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ide_qdev_register(&ide_dev_info[i]); |
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} |
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} |
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device_init(ide_dev_register); |