diff options
Diffstat (limited to 'hw/ide/ide-dev.c')
| -rw-r--r-- | hw/ide/ide-dev.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/hw/ide/ide-dev.c b/hw/ide/ide-dev.c new file mode 100644 index 0000000..15d088f --- /dev/null +++ b/hw/ide/ide-dev.c @@ -0,0 +1,271 @@ +/* + * IDE device functions + * + * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "qapi/qapi-types-block.h" +#include "qemu/error-report.h" +#include "qemu/module.h" +#include "hw/ide/ide-dev.h" +#include "sysemu/block-backend.h" +#include "sysemu/blockdev.h" +#include "sysemu/sysemu.h" +#include "qapi/visitor.h" + +static Property ide_props[] = { + DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ide_qdev_realize(DeviceState *qdev, Error **errp) +{ + IDEDevice *dev = IDE_DEVICE(qdev); + IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev); + IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus); + + if (dev->unit == -1) { + dev->unit = bus->master ? 1 : 0; + } + + if (dev->unit >= bus->max_units) { + error_setg(errp, "Can't create IDE unit %d, bus supports only %d units", + dev->unit, bus->max_units); + return; + } + + switch (dev->unit) { + case 0: + if (bus->master) { + error_setg(errp, "IDE unit %d is in use", dev->unit); + return; + } + bus->master = dev; + break; + case 1: + if (bus->slave) { + error_setg(errp, "IDE unit %d is in use", dev->unit); + return; + } + bus->slave = dev; + break; + default: + error_setg(errp, "Invalid IDE unit %d", dev->unit); + return; + } + dc->realize(dev, errp); +} + +void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp) +{ + IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus); + IDEState *s = bus->ifs + dev->unit; + int ret; + + if (!dev->conf.blk) { + if (kind != IDE_CD) { + error_setg(errp, "No drive specified"); + return; + } else { + /* Anonymous BlockBackend for an empty drive */ + dev->conf.blk = blk_new(qemu_get_aio_context(), 0, BLK_PERM_ALL); + ret = blk_attach_dev(dev->conf.blk, &dev->qdev); + assert(ret == 0); + } + } + + if (dev->conf.discard_granularity == -1) { + dev->conf.discard_granularity = 512; + } else if (dev->conf.discard_granularity && + dev->conf.discard_granularity != 512) { + error_setg(errp, "discard_granularity must be 512 for ide"); + return; + } + + if (!blkconf_blocksizes(&dev->conf, errp)) { + return; + } + + if (dev->conf.logical_block_size != 512) { + error_setg(errp, "logical_block_size must be 512 for IDE"); + return; + } + + if (kind != IDE_CD) { + if (!blkconf_geometry(&dev->conf, &dev->chs_trans, 65535, 16, 255, + errp)) { + return; + } + } + if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD, + kind != IDE_CD, errp)) { + return; + } + + if (ide_init_drive(s, dev->conf.blk, kind, + dev->version, dev->serial, dev->model, dev->wwn, + dev->conf.cyls, dev->conf.heads, dev->conf.secs, + dev->chs_trans, errp) < 0) { + return; + } + + if (!dev->version) { + dev->version = g_strdup(s->version); + } + if (!dev->serial) { + dev->serial = g_strdup(s->drive_serial_str); + } + + add_boot_device_path(dev->conf.bootindex, &dev->qdev, + dev->unit ? "/disk@1" : "/disk@0"); + + add_boot_device_lchs(&dev->qdev, dev->unit ? "/disk@1" : "/disk@0", + dev->conf.lcyls, + dev->conf.lheads, + dev->conf.lsecs); +} + +static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + IDEDevice *d = IDE_DEVICE(obj); + + visit_type_int32(v, name, &d->conf.bootindex, errp); +} + +static void ide_dev_set_bootindex(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + IDEDevice *d = IDE_DEVICE(obj); + int32_t boot_index; + Error *local_err = NULL; + + if (!visit_type_int32(v, name, &boot_index, errp)) { + return; + } + /* check whether bootindex is present in fw_boot_order list */ + check_boot_index(boot_index, &local_err); + if (local_err) { + goto out; + } + /* change bootindex to a new one */ + d->conf.bootindex = boot_index; + + if (d->unit != -1) { + add_boot_device_path(d->conf.bootindex, &d->qdev, + d->unit ? "/disk@1" : "/disk@0"); + } +out: + error_propagate(errp, local_err); +} + +static void ide_dev_instance_init(Object *obj) +{ + object_property_add(obj, "bootindex", "int32", + ide_dev_get_bootindex, + ide_dev_set_bootindex, NULL, NULL); + object_property_set_int(obj, "bootindex", -1, NULL); +} + +static void ide_hd_realize(IDEDevice *dev, Error **errp) +{ + ide_dev_initfn(dev, IDE_HD, errp); +} + +static void ide_cd_realize(IDEDevice *dev, Error **errp) +{ + ide_dev_initfn(dev, IDE_CD, errp); +} + +static Property ide_hd_properties[] = { + DEFINE_IDE_DEV_PROPERTIES(), + DEFINE_BLOCK_CHS_PROPERTIES(IDEDrive, dev.conf), + DEFINE_PROP_BIOS_CHS_TRANS("bios-chs-trans", + IDEDrive, dev.chs_trans, BIOS_ATA_TRANSLATION_AUTO), + DEFINE_PROP_UINT16("rotation_rate", IDEDrive, dev.rotation_rate, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ide_hd_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); + + k->realize = ide_hd_realize; + dc->fw_name = "drive"; + dc->desc = "virtual IDE disk"; + device_class_set_props(dc, ide_hd_properties); +} + +static const TypeInfo ide_hd_info = { + .name = "ide-hd", + .parent = TYPE_IDE_DEVICE, + .instance_size = sizeof(IDEDrive), + .class_init = ide_hd_class_init, +}; + +static Property ide_cd_properties[] = { + DEFINE_IDE_DEV_PROPERTIES(), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ide_cd_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); + + k->realize = ide_cd_realize; + dc->fw_name = "drive"; + dc->desc = "virtual IDE CD-ROM"; + device_class_set_props(dc, ide_cd_properties); +} + +static const TypeInfo ide_cd_info = { + .name = "ide-cd", + .parent = TYPE_IDE_DEVICE, + .instance_size = sizeof(IDEDrive), + .class_init = ide_cd_class_init, +}; + +static void ide_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *k = DEVICE_CLASS(klass); + k->realize = ide_qdev_realize; + set_bit(DEVICE_CATEGORY_STORAGE, k->categories); + k->bus_type = TYPE_IDE_BUS; + device_class_set_props(k, ide_props); +} + +static const TypeInfo ide_device_type_info = { + .name = TYPE_IDE_DEVICE, + .parent = TYPE_DEVICE, + .instance_size = sizeof(IDEDevice), + .abstract = true, + .class_size = sizeof(IDEDeviceClass), + .class_init = ide_device_class_init, + .instance_init = ide_dev_instance_init, +}; + +static void ide_register_types(void) +{ + type_register_static(&ide_hd_info); + type_register_static(&ide_cd_info); + type_register_static(&ide_device_type_info); +} + +type_init(ide_register_types) |