409 lines
12 KiB
C
409 lines
12 KiB
C
/*
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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 "qemu/osdep.h"
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#include "sysemu/dma.h"
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#include "qapi/error.h"
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#include "qapi/qapi-types-block.h"
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#include "qemu/error-report.h"
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#include "qemu/main-loop.h"
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#include "qemu/module.h"
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#include "hw/ide/internal.h"
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#include "hw/qdev-properties.h"
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#include "sysemu/block-backend.h"
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#include "sysemu/blockdev.h"
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#include "hw/block/block.h"
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#include "sysemu/sysemu.h"
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#include "sysemu/runstate.h"
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#include "qapi/visitor.h"
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/* --------------------------------- */
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static char *idebus_get_fw_dev_path(DeviceState *dev);
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static void idebus_unrealize(BusState *qdev);
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static Property ide_props[] = {
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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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static void ide_bus_class_init(ObjectClass *klass, void *data)
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{
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BusClass *k = BUS_CLASS(klass);
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k->get_fw_dev_path = idebus_get_fw_dev_path;
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k->unrealize = idebus_unrealize;
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}
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static void idebus_unrealize(BusState *bus)
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{
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IDEBus *ibus = IDE_BUS(bus);
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if (ibus->vmstate) {
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qemu_del_vm_change_state_handler(ibus->vmstate);
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}
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}
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static const TypeInfo ide_bus_info = {
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.name = TYPE_IDE_BUS,
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.parent = TYPE_BUS,
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.instance_size = sizeof(IDEBus),
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.class_init = ide_bus_class_init,
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};
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void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev,
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int bus_id, int max_units)
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{
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qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL);
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idebus->bus_id = bus_id;
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idebus->max_units = max_units;
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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@%x", qdev_fw_name(dev),
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((IDEBus*)dev->parent_bus)->bus_id);
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return g_strdup(path);
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}
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static void ide_qdev_realize(DeviceState *qdev, Error **errp)
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{
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IDEDevice *dev = IDE_DEVICE(qdev);
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IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev);
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IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus);
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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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if (dev->unit >= bus->max_units) {
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error_setg(errp, "Can't create IDE unit %d, bus supports only %d units",
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dev->unit, bus->max_units);
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return;
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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_setg(errp, "IDE unit %d is in use", dev->unit);
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return;
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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_setg(errp, "IDE unit %d is in use", dev->unit);
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return;
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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_setg(errp, "Invalid IDE unit %d", dev->unit);
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return;
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}
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dc->realize(dev, errp);
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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_new(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_err(dev, "drive", blk_by_legacy_dinfo(drive),
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&error_fatal);
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qdev_realize_and_unref(dev, &bus->qbus, &error_fatal);
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return DO_UPCAST(IDEDevice, qdev, dev);
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}
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int ide_get_geometry(BusState *bus, int unit,
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int16_t *cyls, int8_t *heads, int8_t *secs)
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{
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IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit];
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if (s->drive_kind != IDE_HD || !s->blk) {
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return -1;
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}
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*cyls = s->cylinders;
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*heads = s->heads;
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*secs = s->sectors;
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return 0;
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}
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int ide_get_bios_chs_trans(BusState *bus, int unit)
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{
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return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans;
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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 void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
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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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int ret;
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if (!dev->conf.blk) {
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if (kind != IDE_CD) {
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error_setg(errp, "No drive specified");
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return;
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} else {
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/* Anonymous BlockBackend for an empty drive */
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dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL);
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ret = blk_attach_dev(dev->conf.blk, &dev->qdev);
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assert(ret == 0);
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}
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}
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if (dev->conf.discard_granularity == -1) {
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dev->conf.discard_granularity = 512;
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} else if (dev->conf.discard_granularity &&
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dev->conf.discard_granularity != 512) {
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error_setg(errp, "discard_granularity must be 512 for ide");
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return;
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}
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if (!blkconf_blocksizes(&dev->conf, errp)) {
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return;
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}
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if (dev->conf.logical_block_size != 512) {
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error_setg(errp, "logical_block_size must be 512 for IDE");
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return;
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}
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if (kind != IDE_CD) {
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if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255,
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errp)) {
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return;
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}
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}
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if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
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kind != IDE_CD, errp)) {
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return;
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}
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if (ide_init_drive(s, dev->conf.blk, kind,
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dev->version, dev->serial, dev->model, dev->wwn,
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dev->conf.cyls, dev->conf.heads, dev->conf.secs,
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dev->chs_trans, errp) < 0) {
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return;
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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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add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0",
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dev->conf.lcyls,
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dev->conf.lheads,
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dev->conf.lsecs);
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}
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static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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IDEDevice *d = IDE_DEVICE(obj);
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visit_type_int32(v, name, &d->conf.bootindex, errp);
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}
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static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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IDEDevice *d = IDE_DEVICE(obj);
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int32_t boot_index;
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Error *local_err = NULL;
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if (!visit_type_int32(v, name, &boot_index, errp)) {
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return;
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}
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/* check whether bootindex is present in fw_boot_order list */
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check_boot_index(boot_index, &local_err);
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if (local_err) {
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goto out;
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}
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/* change bootindex to a new one */
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d->conf.bootindex = boot_index;
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if (d->unit != -1) {
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add_boot_device_path(d->conf.bootindex, &d->qdev,
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d->unit ? "/disk@1" : "/disk@0");
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}
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out:
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error_propagate(errp, local_err);
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}
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static void ide_dev_instance_init(Object *obj)
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{
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object_property_add(obj, "bootindex", "int32",
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ide_dev_get_bootindex,
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ide_dev_set_bootindex, NULL, NULL);
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object_property_set_int(obj, "bootindex", -1, NULL);
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}
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static void ide_hd_realize(IDEDevice *dev, Error **errp)
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{
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ide_dev_initfn(dev, IDE_HD, errp);
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}
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static void ide_cd_realize(IDEDevice *dev, Error **errp)
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{
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ide_dev_initfn(dev, IDE_CD, errp);
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}
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static void ide_drive_realize(IDEDevice *dev, Error **errp)
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{
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DriveInfo *dinfo = NULL;
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warn_report("'ide-drive' is deprecated, "
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"please use 'ide-hd' or 'ide-cd' instead");
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if (dev->conf.blk) {
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dinfo = blk_legacy_dinfo(dev->conf.blk);
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}
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ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD, errp);
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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_BLOCK_ERROR_PROPERTIES(IDEDrive, dev.conf), \
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DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \
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DEFINE_PROP_UINT64("wwn", IDEDrive, dev.wwn, 0), \
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DEFINE_PROP_STRING("serial", IDEDrive, dev.serial),\
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DEFINE_PROP_STRING("model", IDEDrive, dev.model)
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static Property ide_hd_properties[] = {
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DEFINE_IDE_DEV_PROPERTIES(),
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DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf),
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DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans",
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IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO),
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DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void ide_hd_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
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k->realize = ide_hd_realize;
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dc->fw_name = "drive";
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dc->desc = "virtual IDE disk";
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device_class_set_props(dc, ide_hd_properties);
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}
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static const TypeInfo ide_hd_info = {
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.name = "ide-hd",
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.parent = TYPE_IDE_DEVICE,
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.instance_size = sizeof(IDEDrive),
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.class_init = ide_hd_class_init,
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};
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static Property ide_cd_properties[] = {
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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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static void ide_cd_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
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k->realize = ide_cd_realize;
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dc->fw_name = "drive";
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dc->desc = "virtual IDE CD-ROM";
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device_class_set_props(dc, ide_cd_properties);
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}
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static const TypeInfo ide_cd_info = {
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.name = "ide-cd",
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.parent = TYPE_IDE_DEVICE,
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.instance_size = sizeof(IDEDrive),
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.class_init = ide_cd_class_init,
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};
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static Property ide_drive_properties[] = {
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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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static void ide_drive_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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IDEDeviceClass *k = IDE_DEVICE_CLASS(klass);
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k->realize = ide_drive_realize;
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dc->fw_name = "drive";
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dc->desc = "virtual IDE disk or CD-ROM (legacy)";
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device_class_set_props(dc, ide_drive_properties);
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}
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static const TypeInfo ide_drive_info = {
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.name = "ide-drive",
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.parent = TYPE_IDE_DEVICE,
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.instance_size = sizeof(IDEDrive),
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.class_init = ide_drive_class_init,
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};
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static void ide_device_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *k = DEVICE_CLASS(klass);
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k->realize = ide_qdev_realize;
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set_bit(DEVICE_CATEGORY_STORAGE, k->categories);
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k->bus_type = TYPE_IDE_BUS;
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device_class_set_props(k, ide_props);
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}
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static const TypeInfo ide_device_type_info = {
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.name = TYPE_IDE_DEVICE,
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.parent = TYPE_DEVICE,
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.instance_size = sizeof(IDEDevice),
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.abstract = true,
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.class_size = sizeof(IDEDeviceClass),
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.class_init = ide_device_class_init,
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.instance_init = ide_dev_instance_init,
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};
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static void ide_register_types(void)
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{
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type_register_static(&ide_bus_info);
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type_register_static(&ide_hd_info);
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type_register_static(&ide_cd_info);
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type_register_static(&ide_drive_info);
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type_register_static(&ide_device_type_info);
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}
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type_init(ide_register_types)
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