qemu-e2k/hw/ide/qdev.c

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/*
* 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 "qemu/osdep.h"
#include "hw/hw.h"
#include "sysemu/dma.h"
2016-03-14 09:01:28 +01:00
#include "qapi/error.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 void idebus_unrealize(BusState *qdev, Error **errp);
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;
k->unrealize = idebus_unrealize;
}
static void idebus_unrealize(BusState *bus, Error **errp)
{
IDEBus *ibus = IDE_BUS(bus);
if (ibus->vmstate) {
qemu_del_vm_change_state_handler(ibus->vmstate);
}
}
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 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);
}
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(dev, "drive", blk_by_legacy_dinfo(drive),
&error_fatal);
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 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(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;
}
blkconf_blocksizes(&dev->conf);
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");
}
static void ide_dev_get_bootindex(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
IDEDevice *d = IDE_DEVICE(obj);
qapi: Swap visit_* arguments for consistent 'name' placement JSON uses "name":value, but many of our visitor interfaces were called with visit_type_FOO(v, &value, name, errp). This can be a bit confusing to have to mentally swap the parameter order to match JSON order. It's particularly bad for visit_start_struct(), where the 'name' parameter is smack in the middle of the otherwise-related group of 'obj, kind, size' parameters! It's time to do a global swap of the parameter ordering, so that the 'name' parameter is always immediately after the Visitor argument. Additional reason in favor of the swap: the existing include/qjson.h prefers listing 'name' first in json_prop_*(), and I have plans to unify that file with the qapi visitors; listing 'name' first in qapi will minimize churn to the (admittedly few) qjson.h clients. Later patches will then fix docs, object.h, visitor-impl.h, and those clients to match. Done by first patching scripts/qapi*.py by hand to make generated files do what I want, then by running the following Coccinelle script to affect the rest of the code base: $ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'` I then had to apply some touchups (Coccinelle insisted on TAB indentation in visitor.h, and botched the signature of visit_type_enum() by rewriting 'const char *const strings[]' to the syntactically invalid 'const char*const[] strings'). The movement of parameters is sufficient to provoke compiler errors if any callers were missed. // Part 1: Swap declaration order @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_start_struct -(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type bool, TV, T1; identifier ARG1; @@ bool visit_optional -(TV v, T1 ARG1, const char *name) +(TV v, const char *name, T1 ARG1) { ... } @@ type TV, TErr, TObj, T1; identifier OBJ, ARG1; @@ void visit_get_next_type -(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp) { ... } @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_type_enum -(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type TV, TErr, TObj; identifier OBJ; identifier VISIT_TYPE =~ "^visit_type_"; @@ void VISIT_TYPE -(TV v, TObj OBJ, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, TErr errp) { ... } // Part 2: swap caller order @@ expression V, NAME, OBJ, ARG1, ARG2, ERR; identifier VISIT_TYPE =~ "^visit_type_"; @@ ( -visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR) +visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR) | -visit_optional(V, ARG1, NAME) +visit_optional(V, NAME, ARG1) | -visit_get_next_type(V, OBJ, ARG1, NAME, ERR) +visit_get_next_type(V, NAME, OBJ, ARG1, ERR) | -visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR) +visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR) | -VISIT_TYPE(V, OBJ, NAME, ERR) +VISIT_TYPE(V, NAME, OBJ, ERR) ) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-19-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-01-29 14:48:54 +01:00
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;
qapi: Swap visit_* arguments for consistent 'name' placement JSON uses "name":value, but many of our visitor interfaces were called with visit_type_FOO(v, &value, name, errp). This can be a bit confusing to have to mentally swap the parameter order to match JSON order. It's particularly bad for visit_start_struct(), where the 'name' parameter is smack in the middle of the otherwise-related group of 'obj, kind, size' parameters! It's time to do a global swap of the parameter ordering, so that the 'name' parameter is always immediately after the Visitor argument. Additional reason in favor of the swap: the existing include/qjson.h prefers listing 'name' first in json_prop_*(), and I have plans to unify that file with the qapi visitors; listing 'name' first in qapi will minimize churn to the (admittedly few) qjson.h clients. Later patches will then fix docs, object.h, visitor-impl.h, and those clients to match. Done by first patching scripts/qapi*.py by hand to make generated files do what I want, then by running the following Coccinelle script to affect the rest of the code base: $ spatch --sp-file script `git grep -l '\bvisit_' -- '**/*.[ch]'` I then had to apply some touchups (Coccinelle insisted on TAB indentation in visitor.h, and botched the signature of visit_type_enum() by rewriting 'const char *const strings[]' to the syntactically invalid 'const char*const[] strings'). The movement of parameters is sufficient to provoke compiler errors if any callers were missed. // Part 1: Swap declaration order @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_start_struct -(TV v, TObj OBJ, T1 ARG1, const char *name, T2 ARG2, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type bool, TV, T1; identifier ARG1; @@ bool visit_optional -(TV v, T1 ARG1, const char *name) +(TV v, const char *name, T1 ARG1) { ... } @@ type TV, TErr, TObj, T1; identifier OBJ, ARG1; @@ void visit_get_next_type -(TV v, TObj OBJ, T1 ARG1, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, TErr errp) { ... } @@ type TV, TErr, TObj, T1, T2; identifier OBJ, ARG1, ARG2; @@ void visit_type_enum -(TV v, TObj OBJ, T1 ARG1, T2 ARG2, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, T1 ARG1, T2 ARG2, TErr errp) { ... } @@ type TV, TErr, TObj; identifier OBJ; identifier VISIT_TYPE =~ "^visit_type_"; @@ void VISIT_TYPE -(TV v, TObj OBJ, const char *name, TErr errp) +(TV v, const char *name, TObj OBJ, TErr errp) { ... } // Part 2: swap caller order @@ expression V, NAME, OBJ, ARG1, ARG2, ERR; identifier VISIT_TYPE =~ "^visit_type_"; @@ ( -visit_start_struct(V, OBJ, ARG1, NAME, ARG2, ERR) +visit_start_struct(V, NAME, OBJ, ARG1, ARG2, ERR) | -visit_optional(V, ARG1, NAME) +visit_optional(V, NAME, ARG1) | -visit_get_next_type(V, OBJ, ARG1, NAME, ERR) +visit_get_next_type(V, NAME, OBJ, ARG1, ERR) | -visit_type_enum(V, OBJ, ARG1, ARG2, NAME, ERR) +visit_type_enum(V, NAME, OBJ, ARG1, ARG2, ERR) | -VISIT_TYPE(V, OBJ, NAME, ERR) +VISIT_TYPE(V, NAME, OBJ, ERR) ) Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <1454075341-13658-19-git-send-email-eblake@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2016-01-29 14:48:54 +01:00
visit_type_int32(v, name, &boot_index, &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:
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 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 void ide_drive_realize(IDEDevice *dev, Error **errp)
{
DriveInfo *dinfo = NULL;
if (dev->conf.blk) {
dinfo = blk_legacy_dinfo(dev->conf.blk);
}
ide_dev_initfn(dev, dinfo && dinfo->media_cd ? IDE_CD : IDE_HD, errp);
}
#define DEFINE_IDE_DEV_PROPERTIES() \
DEFINE_BLOCK_PROPERTIES(IDEDrive, dev.conf), \
DEFINE_BLOCK_ERROR_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_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";
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->realize = ide_cd_realize;
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->realize = ide_drive_realize;
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->realize = ide_qdev_realize;
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)