diff options
Diffstat (limited to 'qemu/hw/ide/qdev.c')
| -rw-r--r-- | qemu/hw/ide/qdev.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/qemu/hw/ide/qdev.c b/qemu/hw/ide/qdev.c new file mode 100644 index 000000000..788b36133 --- /dev/null +++ b/qemu/hw/ide/qdev.c @@ -0,0 +1,367 @@ +/* + * ide bus support for qdev. + * + * 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 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 <hw/hw.h> +#include "sysemu/dma.h" +#include "qemu/error-report.h" +#include <hw/ide/internal.h> +#include "sysemu/block-backend.h" +#include "sysemu/blockdev.h" +#include "hw/block/block.h" +#include "sysemu/sysemu.h" +#include "qapi/visitor.h" + +/* --------------------------------- */ + +static char *idebus_get_fw_dev_path(DeviceState *dev); + +static Property ide_props[] = { + DEFINE_PROP_UINT32("unit", IDEDevice, unit, -1), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ide_bus_class_init(ObjectClass *klass, void *data) +{ + BusClass *k = BUS_CLASS(klass); + + k->get_fw_dev_path = idebus_get_fw_dev_path; +} + +static const TypeInfo ide_bus_info = { + .name = TYPE_IDE_BUS, + .parent = TYPE_BUS, + .instance_size = sizeof(IDEBus), + .class_init = ide_bus_class_init, +}; + +void ide_bus_new(IDEBus *idebus, size_t idebus_size, DeviceState *dev, + int bus_id, int max_units) +{ + qbus_create_inplace(idebus, idebus_size, TYPE_IDE_BUS, dev, NULL); + idebus->bus_id = bus_id; + idebus->max_units = max_units; +} + +static char *idebus_get_fw_dev_path(DeviceState *dev) +{ + char path[30]; + + snprintf(path, sizeof(path), "%s@%x", qdev_fw_name(dev), + ((IDEBus*)dev->parent_bus)->bus_id); + + return g_strdup(path); +} + +static int ide_qdev_init(DeviceState *qdev) +{ + IDEDevice *dev = IDE_DEVICE(qdev); + IDEDeviceClass *dc = IDE_DEVICE_GET_CLASS(dev); + IDEBus *bus = DO_UPCAST(IDEBus, qbus, qdev->parent_bus); + + if (!dev->conf.blk) { + error_report("No drive specified"); + goto err; + } + if (dev->unit == -1) { + dev->unit = bus->master ? 1 : 0; + } + + if (dev->unit >= bus->max_units) { + error_report("Can't create IDE unit %d, bus supports only %d units", + dev->unit, bus->max_units); + goto err; + } + + switch (dev->unit) { + case 0: + if (bus->master) { + error_report("IDE unit %d is in use", dev->unit); + goto err; + } + bus->master = dev; + break; + case 1: + if (bus->slave) { + error_report("IDE unit %d is in use", dev->unit); + goto err; + } + bus->slave = dev; + break; + default: + error_report("Invalid IDE unit %d", dev->unit); + goto err; + } + return dc->init(dev); + +err: + return -1; +} + +IDEDevice *ide_create_drive(IDEBus *bus, int unit, DriveInfo *drive) +{ + DeviceState *dev; + + dev = qdev_create(&bus->qbus, drive->media_cd ? "ide-cd" : "ide-hd"); + qdev_prop_set_uint32(dev, "unit", unit); + qdev_prop_set_drive_nofail(dev, "drive", blk_by_legacy_dinfo(drive)); + qdev_init_nofail(dev); + return DO_UPCAST(IDEDevice, qdev, dev); +} + +int ide_get_geometry(BusState *bus, int unit, + int16_t *cyls, int8_t *heads, int8_t *secs) +{ + IDEState *s = &DO_UPCAST(IDEBus, qbus, bus)->ifs[unit]; + + if (s->drive_kind != IDE_HD || !s->blk) { + return -1; + } + + *cyls = s->cylinders; + *heads = s->heads; + *secs = s->sectors; + return 0; +} + +int ide_get_bios_chs_trans(BusState *bus, int unit) +{ + return DO_UPCAST(IDEBus, qbus, bus)->ifs[unit].chs_trans; +} + +/* --------------------------------- */ + +typedef struct IDEDrive { + IDEDevice dev; +} IDEDrive; + +static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind) +{ + IDEBus *bus = DO_UPCAST(IDEBus, qbus, dev->qdev.parent_bus); + IDEState *s = bus->ifs + dev->unit; + Error *err = NULL; + + if (dev->conf.discard_granularity == -1) { + dev->conf.discard_granularity = 512; + } else if (dev->conf.discard_granularity && + dev->conf.discard_granularity != 512) { + error_report("discard_granularity must be 512 for ide"); + return -1; + } + + blkconf_blocksizes(&dev->conf); + if (dev->conf.logical_block_size != 512) { + error_report("logical_block_size must be 512 for IDE"); + return -1; + } + + blkconf_serial(&dev->conf, &dev->serial); + if (kind != IDE_CD) { + blkconf_geometry(&dev->conf, &dev->chs_trans, 65536, 16, 255, &err); + if (err) { + error_report_err(err); + return -1; + } + } + + 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) < 0) { + return -1; + } + + 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"); + + return 0; +} + +static void ide_dev_get_bootindex(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + IDEDevice *d = IDE_DEVICE(obj); + + visit_type_int32(v, &d->conf.bootindex, name, errp); +} + +static void ide_dev_set_bootindex(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + IDEDevice *d = IDE_DEVICE(obj); + int32_t boot_index; + Error *local_err = NULL; + + visit_type_int32(v, &boot_index, name, &local_err); + if (local_err) { + goto out; + } + /* 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: + if (local_err) { + 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, NULL); + object_property_set_int(obj, -1, "bootindex", NULL); +} + +static int ide_hd_initfn(IDEDevice *dev) +{ + return ide_dev_initfn(dev, IDE_HD); +} + +static int ide_cd_initfn(IDEDevice *dev) +{ + return ide_dev_initfn(dev, IDE_CD); +} + +static int ide_drive_initfn(IDEDevice *dev) +{ + DriveInfo *dinfo = blk_legacy_dinfo(dev->conf.blk); + + return ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD); +} + +#define DEFINE_IDE_DEV_PROPERTIES() \ + DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \ + DEFINE_PROP_STRING("ver", IDEDrive, dev.version), \ + DEFINE_PROP_UINT64("wwn", IDEDrive, dev.wwn, 0), \ + DEFINE_PROP_STRING("serial", IDEDrive, dev.serial),\ + DEFINE_PROP_STRING("model", IDEDrive, dev.model) + +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_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->init = ide_hd_initfn; + dc->fw_name = "drive"; + dc->desc = "virtual IDE disk"; + dc->props = 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->init = ide_cd_initfn; + dc->fw_name = "drive"; + dc->desc = "virtual IDE CD-ROM"; + dc->props = 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 Property ide_drive_properties[] = { + DEFINE_IDE_DEV_PROPERTIES(), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ide_drive_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + IDEDeviceClass *k = IDE_DEVICE_CLASS(klass); + k->init = ide_drive_initfn; + dc->fw_name = "drive"; + dc->desc = "virtual IDE disk or CD-ROM (legacy)"; + dc->props = ide_drive_properties; +} + +static const TypeInfo ide_drive_info = { + .name = "ide-drive", + .parent = TYPE_IDE_DEVICE, + .instance_size = sizeof(IDEDrive), + .class_init = ide_drive_class_init, +}; + +static void ide_device_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *k = DEVICE_CLASS(klass); + k->init = ide_qdev_init; + set_bit(DEVICE_CATEGORY_STORAGE, k->categories); + k->bus_type = TYPE_IDE_BUS; + k->props = 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_bus_info); + type_register_static(&ide_hd_info); + type_register_static(&ide_cd_info); + type_register_static(&ide_drive_info); + type_register_static(&ide_device_type_info); +} + +type_init(ide_register_types) |