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qemu/hw/core/qdev-properties.c
Philippe Mathieu-Daudé a2974439ad hw/core/qdev-properties: Export enum-related functions 
We are going to split this file and reuse these static functions.
Add the local "qdev-prop-internal.h" header declaring them.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200930164949.1425294-6-philmd@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2020-10-06 11:09:35 -04:00

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#include "qemu/osdep.h"
#include "qemu/cutils.h"
#include "net/net.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "hw/pci/pci.h"
#include "qapi/qapi-types-block.h"
#include "qapi/qapi-types-machine.h"
#include "qapi/qapi-types-misc.h"
#include "qapi/qmp/qerror.h"
#include "qemu/ctype.h"
#include "qemu/error-report.h"
#include "qapi/qapi-types-migration.h"
#include "hw/block/block.h"
#include "net/hub.h"
#include "qapi/visitor.h"
#include "chardev/char.h"
#include "qemu/uuid.h"
#include "qemu/units.h"
#include "qemu/cutils.h"
#include "qdev-prop-internal.h"
void qdev_prop_set_after_realize(DeviceState *dev, const char *name,
Error **errp)
{
if (dev->id) {
error_setg(errp, "Attempt to set property '%s' on device '%s' "
"(type '%s') after it was realized", name, dev->id,
object_get_typename(OBJECT(dev)));
} else {
error_setg(errp, "Attempt to set property '%s' on anonymous device "
"(type '%s') after it was realized", name,
object_get_typename(OBJECT(dev)));
}
}
void qdev_prop_allow_set_link_before_realize(const Object *obj,
const char *name,
Object *val, Error **errp)
{
DeviceState *dev = DEVICE(obj);
if (dev->realized) {
error_setg(errp, "Attempt to set link property '%s' on device '%s' "
"(type '%s') after it was realized",
name, dev->id, object_get_typename(obj));
}
}
void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)
{
void *ptr = dev;
ptr += prop->offset;
return ptr;
}
void qdev_propinfo_get_enum(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_enum(v, prop->name, ptr, prop->info->enum_table, errp);
}
void qdev_propinfo_set_enum(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_enum(v, prop->name, ptr, prop->info->enum_table, errp);
}
void qdev_propinfo_set_default_value_enum(ObjectProperty *op,
const Property *prop)
{
object_property_set_default_str(op,
qapi_enum_lookup(prop->info->enum_table, prop->defval.i));
}
/* Bit */
static uint32_t qdev_get_prop_mask(Property *prop)
{
assert(prop->info == &qdev_prop_bit);
return 0x1 << prop->bitnr;
}
static void bit_prop_set(DeviceState *dev, Property *props, bool val)
{
uint32_t *p = qdev_get_prop_ptr(dev, props);
uint32_t mask = qdev_get_prop_mask(props);
if (val) {
*p |= mask;
} else {
*p &= ~mask;
}
}
static void prop_get_bit(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *p = qdev_get_prop_ptr(dev, prop);
bool value = (*p & qdev_get_prop_mask(prop)) != 0;
visit_type_bool(v, name, &value, errp);
}
static void prop_set_bit(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
bit_prop_set(dev, prop, value);
}
static void set_default_value_bool(ObjectProperty *op, const Property *prop)
{
object_property_set_default_bool(op, prop->defval.u);
}
const PropertyInfo qdev_prop_bit = {
.name = "bool",
.description = "on/off",
.get = prop_get_bit,
.set = prop_set_bit,
.set_default_value = set_default_value_bool,
};
/* Bit64 */
static uint64_t qdev_get_prop_mask64(Property *prop)
{
assert(prop->info == &qdev_prop_bit64);
return 0x1ull << prop->bitnr;
}
static void bit64_prop_set(DeviceState *dev, Property *props, bool val)
{
uint64_t *p = qdev_get_prop_ptr(dev, props);
uint64_t mask = qdev_get_prop_mask64(props);
if (val) {
*p |= mask;
} else {
*p &= ~mask;
}
}
static void prop_get_bit64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *p = qdev_get_prop_ptr(dev, prop);
bool value = (*p & qdev_get_prop_mask64(prop)) != 0;
visit_type_bool(v, name, &value, errp);
}
static void prop_set_bit64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_bool(v, name, &value, errp)) {
return;
}
bit64_prop_set(dev, prop, value);
}
const PropertyInfo qdev_prop_bit64 = {
.name = "bool",
.description = "on/off",
.get = prop_get_bit64,
.set = prop_set_bit64,
.set_default_value = set_default_value_bool,
};
/* --- bool --- */
static void get_bool(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_bool(v, name, ptr, errp);
}
static void set_bool(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_bool(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_bool = {
.name = "bool",
.get = get_bool,
.set = set_bool,
.set_default_value = set_default_value_bool,
};
/* --- 8bit integer --- */
static void get_uint8(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint8(v, name, ptr, errp);
}
static void set_uint8(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint8(v, name, ptr, errp);
}
static void set_default_value_int(ObjectProperty *op, const Property *prop)
{
object_property_set_default_int(op, prop->defval.i);
}
static void set_default_value_uint(ObjectProperty *op, const Property *prop)
{
object_property_set_default_uint(op, prop->defval.u);
}
const PropertyInfo qdev_prop_uint8 = {
.name = "uint8",
.get = get_uint8,
.set = set_uint8,
.set_default_value = set_default_value_uint,
};
/* --- 16bit integer --- */
static void get_uint16(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint16(v, name, ptr, errp);
}
static void set_uint16(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint16(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint16 = {
.name = "uint16",
.get = get_uint16,
.set = set_uint16,
.set_default_value = set_default_value_uint,
};
/* --- 32bit integer --- */
static void get_uint32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint32(v, name, ptr, errp);
}
static void set_uint32(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint32(v, name, ptr, errp);
}
static void get_int32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_int32(v, name, ptr, errp);
}
static void set_int32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_int32(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint32 = {
.name = "uint32",
.get = get_uint32,
.set = set_uint32,
.set_default_value = set_default_value_uint,
};
const PropertyInfo qdev_prop_int32 = {
.name = "int32",
.get = get_int32,
.set = set_int32,
.set_default_value = set_default_value_int,
};
/* --- 64bit integer --- */
static void get_uint64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint64(v, name, ptr, errp);
}
static void set_uint64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint64(v, name, ptr, errp);
}
static void get_int64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_int64(v, name, ptr, errp);
}
static void set_int64(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int64_t *ptr = qdev_get_prop_ptr(dev, prop);
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_int64(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_uint64 = {
.name = "uint64",
.get = get_uint64,
.set = set_uint64,
.set_default_value = set_default_value_uint,
};
const PropertyInfo qdev_prop_int64 = {
.name = "int64",
.get = get_int64,
.set = set_int64,
.set_default_value = set_default_value_int,
};
/* --- string --- */
static void release_string(Object *obj, const char *name, void *opaque)
{
Property *prop = opaque;
g_free(*(char **)qdev_get_prop_ptr(DEVICE(obj), prop));
}
static void get_string(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
char **ptr = qdev_get_prop_ptr(dev, prop);
if (!*ptr) {
char *str = (char *)"";
visit_type_str(v, name, &str, errp);
} else {
visit_type_str(v, name, ptr, errp);
}
}
static void set_string(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
char **ptr = qdev_get_prop_ptr(dev, prop);
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
g_free(*ptr);
*ptr = str;
}
const PropertyInfo qdev_prop_string = {
.name = "str",
.release = release_string,
.get = get_string,
.set = set_string,
};
/* --- mac address --- */
/*
* accepted syntax versions:
* 01:02:03:04:05:06
* 01-02-03-04-05-06
*/
static void get_mac(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
char buffer[2 * 6 + 5 + 1];
char *p = buffer;
snprintf(buffer, sizeof(buffer), "%02x:%02x:%02x:%02x:%02x:%02x",
mac->a[0], mac->a[1], mac->a[2],
mac->a[3], mac->a[4], mac->a[5]);
visit_type_str(v, name, &p, errp);
}
static void set_mac(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
int i, pos;
char *str;
const char *p;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
for (i = 0, pos = 0; i < 6; i++, pos += 3) {
long val;
if (!qemu_isxdigit(str[pos])) {
goto inval;
}
if (!qemu_isxdigit(str[pos + 1])) {
goto inval;
}
if (i == 5) {
if (str[pos + 2] != '\0') {
goto inval;
}
} else {
if (str[pos + 2] != ':' && str[pos + 2] != '-') {
goto inval;
}
}
if (qemu_strtol(str + pos, &p, 16, &val) < 0 || val > 0xff) {
goto inval;
}
mac->a[i] = val;
}
g_free(str);
return;
inval:
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
g_free(str);
}
const PropertyInfo qdev_prop_macaddr = {
.name = "str",
.description = "Ethernet 6-byte MAC Address, example: 52:54:00:12:34:56",
.get = get_mac,
.set = set_mac,
};
/* --- Reserved Region --- */
/*
* Accepted syntax:
* <low address>:<high address>:<type>
* where low/high addresses are uint64_t in hexadecimal
* and type is a non-negative decimal integer
*/
static void get_reserved_region(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
ReservedRegion *rr = qdev_get_prop_ptr(dev, prop);
char buffer[64];
char *p = buffer;
int rc;
rc = snprintf(buffer, sizeof(buffer), "0x%"PRIx64":0x%"PRIx64":%u",
rr->low, rr->high, rr->type);
assert(rc < sizeof(buffer));
visit_type_str(v, name, &p, errp);
}
static void set_reserved_region(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
ReservedRegion *rr = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
const char *endptr;
char *str;
int ret;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, name, &str, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
ret = qemu_strtou64(str, &endptr, 16, &rr->low);
if (ret) {
error_setg(errp, "start address of '%s'"
" must be a hexadecimal integer", name);
goto out;
}
if (*endptr != ':') {
goto separator_error;
}
ret = qemu_strtou64(endptr + 1, &endptr, 16, &rr->high);
if (ret) {
error_setg(errp, "end address of '%s'"
" must be a hexadecimal integer", name);
goto out;
}
if (*endptr != ':') {
goto separator_error;
}
ret = qemu_strtoui(endptr + 1, &endptr, 10, &rr->type);
if (ret) {
error_setg(errp, "type of '%s'"
" must be a non-negative decimal integer", name);
}
goto out;
separator_error:
error_setg(errp, "reserved region fields must be separated with ':'");
out:
g_free(str);
return;
}
const PropertyInfo qdev_prop_reserved_region = {
.name = "reserved_region",
.description = "Reserved Region, example: 0xFEE00000:0xFEEFFFFF:0",
.get = get_reserved_region,
.set = set_reserved_region,
};
/* --- on/off/auto --- */
const PropertyInfo qdev_prop_on_off_auto = {
.name = "OnOffAuto",
.description = "on/off/auto",
.enum_table = &OnOffAuto_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- lost tick policy --- */
QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int));
const PropertyInfo qdev_prop_losttickpolicy = {
.name = "LostTickPolicy",
.enum_table = &LostTickPolicy_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- Block device error handling policy --- */
QEMU_BUILD_BUG_ON(sizeof(BlockdevOnError) != sizeof(int));
const PropertyInfo qdev_prop_blockdev_on_error = {
.name = "BlockdevOnError",
.description = "Error handling policy, "
"report/ignore/enospc/stop/auto",
.enum_table = &BlockdevOnError_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- BIOS CHS translation */
QEMU_BUILD_BUG_ON(sizeof(BiosAtaTranslation) != sizeof(int));
const PropertyInfo qdev_prop_bios_chs_trans = {
.name = "BiosAtaTranslation",
.description = "Logical CHS translation algorithm, "
"auto/none/lba/large/rechs",
.enum_table = &BiosAtaTranslation_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- FDC default drive types */
const PropertyInfo qdev_prop_fdc_drive_type = {
.name = "FdcDriveType",
.description = "FDC drive type, "
"144/288/120/none/auto",
.enum_table = &FloppyDriveType_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- MultiFDCompression --- */
const PropertyInfo qdev_prop_multifd_compression = {
.name = "MultiFDCompression",
.description = "multifd_compression values, "
"none/zlib/zstd",
.enum_table = &MultiFDCompression_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- pci address --- */
/*
* bus-local address, i.e. "$slot" or "$slot.$fn"
*/
static void set_pci_devfn(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t value, *ptr = qdev_get_prop_ptr(dev, prop);
unsigned int slot, fn, n;
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, NULL)) {
if (!visit_type_int32(v, name, &value, errp)) {
return;
}
if (value < -1 || value > 255) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
name ? name : "null", "pci_devfn");
return;
}
*ptr = value;
return;
}
if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {
fn = 0;
if (sscanf(str, "%x%n", &slot, &n) != 1) {
goto invalid;
}
}
if (str[n] != '\0' || fn > 7 || slot > 31) {
goto invalid;
}
*ptr = slot << 3 | fn;
g_free(str);
return;
invalid:
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
g_free(str);
}
static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest,
size_t len)
{
int32_t *ptr = qdev_get_prop_ptr(dev, prop);
if (*ptr == -1) {
return snprintf(dest, len, "<unset>");
} else {
return snprintf(dest, len, "%02x.%x", *ptr >> 3, *ptr & 7);
}
}
const PropertyInfo qdev_prop_pci_devfn = {
.name = "int32",
.description = "Slot and optional function number, example: 06.0 or 06",
.print = print_pci_devfn,
.get = get_int32,
.set = set_pci_devfn,
.set_default_value = set_default_value_int,
};
/* --- 32bit unsigned int 'size' type --- */
static void get_size32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
uint64_t value = *ptr;
visit_type_size(v, name, &value, errp);
}
static void set_size32(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
uint64_t value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_size(v, name, &value, errp)) {
return;
}
if (value > UINT32_MAX) {
error_setg(errp,
"Property %s.%s doesn't take value %" PRIu64
" (maximum: %u)",
dev->id ? : "", name, value, UINT32_MAX);
return;
}
*ptr = value;
}
const PropertyInfo qdev_prop_size32 = {
.name = "size",
.get = get_size32,
.set = set_size32,
.set_default_value = set_default_value_uint,
};
/* --- blocksize --- */
/* lower limit is sector size */
#define MIN_BLOCK_SIZE 512
#define MIN_BLOCK_SIZE_STR "512 B"
/*
* upper limit is arbitrary, 2 MiB looks sufficient for all sensible uses, and
* matches qcow2 cluster size limit
*/
#define MAX_BLOCK_SIZE (2 * MiB)
#define MAX_BLOCK_SIZE_STR "2 MiB"
static void set_blocksize(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
uint64_t value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_size(v, name, &value, errp)) {
return;
}
/* value of 0 means "unset" */
if (value && (value < MIN_BLOCK_SIZE || value > MAX_BLOCK_SIZE)) {
error_setg(errp,
"Property %s.%s doesn't take value %" PRIu64
" (minimum: " MIN_BLOCK_SIZE_STR
", maximum: " MAX_BLOCK_SIZE_STR ")",
dev->id ? : "", name, value);
return;
}
/* We rely on power-of-2 blocksizes for bitmasks */
if ((value & (value - 1)) != 0) {
error_setg(errp,
"Property %s.%s doesn't take value '%" PRId64 "', "
"it's not a power of 2", dev->id ?: "", name, (int64_t)value);
return;
}
*ptr = value;
}
const PropertyInfo qdev_prop_blocksize = {
.name = "size",
.description = "A power of two between " MIN_BLOCK_SIZE_STR
" and " MAX_BLOCK_SIZE_STR,
.get = get_size32,
.set = set_blocksize,
.set_default_value = set_default_value_uint,
};
/* --- pci host address --- */
static void get_pci_host_devaddr(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
char buffer[] = "ffff:ff:ff.f";
char *p = buffer;
int rc = 0;
/*
* Catch "invalid" device reference from vfio-pci and allow the
* default buffer representing the non-existent device to be used.
*/
if (~addr->domain || ~addr->bus || ~addr->slot || ~addr->function) {
rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%0d",
addr->domain, addr->bus, addr->slot, addr->function);
assert(rc == sizeof(buffer) - 1);
}
visit_type_str(v, name, &p, errp);
}
/*
* Parse [<domain>:]<bus>:<slot>.<func>
* if <domain> is not supplied, it's assumed to be 0.
*/
static void set_pci_host_devaddr(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
char *str, *p;
const char *e;
unsigned long val;
unsigned long dom = 0, bus = 0;
unsigned int slot = 0, func = 0;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
p = str;
if (qemu_strtoul(p, &e, 16, &val) < 0 || val > 0xffff || e == p) {
goto inval;
}
if (*e != ':') {
goto inval;
}
bus = val;
p = (char *)e + 1;
if (qemu_strtoul(p, &e, 16, &val) < 0 || val > 0x1f || e == p) {
goto inval;
}
if (*e == ':') {
dom = bus;
bus = val;
p = (char *)e + 1;
if (qemu_strtoul(p, &e, 16, &val) < 0 || val > 0x1f || e == p) {
goto inval;
}
}
slot = val;
if (*e != '.') {
goto inval;
}
p = (char *)e + 1;
if (qemu_strtoul(p, &e, 10, &val) < 0 || val > 7 || e == p) {
goto inval;
}
func = val;
if (bus > 0xff) {
goto inval;
}
if (*e) {
goto inval;
}
addr->domain = dom;
addr->bus = bus;
addr->slot = slot;
addr->function = func;
g_free(str);
return;
inval:
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
g_free(str);
}
const PropertyInfo qdev_prop_pci_host_devaddr = {
.name = "str",
.description = "Address (bus/device/function) of "
"the host device, example: 04:10.0",
.get = get_pci_host_devaddr,
.set = set_pci_host_devaddr,
};
/* --- UUID --- */
static void get_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
QemuUUID *uuid = qdev_get_prop_ptr(dev, prop);
char buffer[UUID_FMT_LEN + 1];
char *p = buffer;
qemu_uuid_unparse(uuid, buffer);
visit_type_str(v, name, &p, errp);
}
#define UUID_VALUE_AUTO "auto"
static void set_uuid(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
QemuUUID *uuid = qdev_get_prop_ptr(dev, prop);
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_str(v, name, &str, errp)) {
return;
}
if (!strcmp(str, UUID_VALUE_AUTO)) {
qemu_uuid_generate(uuid);
} else if (qemu_uuid_parse(str, uuid) < 0) {
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
}
g_free(str);
}
static void set_default_uuid_auto(ObjectProperty *op, const Property *prop)
{
object_property_set_default_str(op, UUID_VALUE_AUTO);
}
const PropertyInfo qdev_prop_uuid = {
.name = "str",
.description = "UUID (aka GUID) or \"" UUID_VALUE_AUTO
"\" for random value (default)",
.get = get_uuid,
.set = set_uuid,
.set_default_value = set_default_uuid_auto,
};
/* --- support for array properties --- */
/* Used as an opaque for the object properties we add for each
* array element. Note that the struct Property must be first
* in the struct so that a pointer to this works as the opaque
* for the underlying element's property hooks as well as for
* our own release callback.
*/
typedef struct {
struct Property prop;
char *propname;
ObjectPropertyRelease *release;
} ArrayElementProperty;
/* object property release callback for array element properties:
* we call the underlying element's property release hook, and
* then free the memory we allocated when we added the property.
*/
static void array_element_release(Object *obj, const char *name, void *opaque)
{
ArrayElementProperty *p = opaque;
if (p->release) {
p->release(obj, name, opaque);
}
g_free(p->propname);
g_free(p);
}
static void set_prop_arraylen(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
/* Setter for the property which defines the length of a
* variable-sized property array. As well as actually setting the
* array-length field in the device struct, we have to create the
* array itself and dynamically add the corresponding properties.
*/
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *alenptr = qdev_get_prop_ptr(dev, prop);
void **arrayptr = (void *)dev + prop->arrayoffset;
void *eltptr;
const char *arrayname;
int i;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (*alenptr) {
error_setg(errp, "array size property %s may not be set more than once",
name);
return;
}
if (!visit_type_uint32(v, name, alenptr, errp)) {
return;
}
if (!*alenptr) {
return;
}
/* DEFINE_PROP_ARRAY guarantees that name should start with this prefix;
* strip it off so we can get the name of the array itself.
*/
assert(strncmp(name, PROP_ARRAY_LEN_PREFIX,
strlen(PROP_ARRAY_LEN_PREFIX)) == 0);
arrayname = name + strlen(PROP_ARRAY_LEN_PREFIX);
/* Note that it is the responsibility of the individual device's deinit
* to free the array proper.
*/
*arrayptr = eltptr = g_malloc0(*alenptr * prop->arrayfieldsize);
for (i = 0; i < *alenptr; i++, eltptr += prop->arrayfieldsize) {
char *propname = g_strdup_printf("%s[%d]", arrayname, i);
ArrayElementProperty *arrayprop = g_new0(ArrayElementProperty, 1);
arrayprop->release = prop->arrayinfo->release;
arrayprop->propname = propname;
arrayprop->prop.info = prop->arrayinfo;
arrayprop->prop.name = propname;
/* This ugly piece of pointer arithmetic sets up the offset so
* that when the underlying get/set hooks call qdev_get_prop_ptr
* they get the right answer despite the array element not actually
* being inside the device struct.
*/
arrayprop->prop.offset = eltptr - (void *)dev;
assert(qdev_get_prop_ptr(dev, &arrayprop->prop) == eltptr);
object_property_add(obj, propname,
arrayprop->prop.info->name,
arrayprop->prop.info->get,
arrayprop->prop.info->set,
array_element_release,
arrayprop);
}
}
const PropertyInfo qdev_prop_arraylen = {
.name = "uint32",
.get = get_uint32,
.set = set_prop_arraylen,
.set_default_value = set_default_value_uint,
};
/* --- public helpers --- */
static Property *qdev_prop_walk(Property *props, const char *name)
{
if (!props) {
return NULL;
}
while (props->name) {
if (strcmp(props->name, name) == 0) {
return props;
}
props++;
}
return NULL;
}
static Property *qdev_prop_find(DeviceState *dev, const char *name)
{
ObjectClass *class;
Property *prop;
/* device properties */
class = object_get_class(OBJECT(dev));
do {
prop = qdev_prop_walk(DEVICE_CLASS(class)->props_, name);
if (prop) {
return prop;
}
class = object_class_get_parent(class);
} while (class != object_class_by_name(TYPE_DEVICE));
return NULL;
}
void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
Property *prop, const char *value)
{
switch (ret) {
case -EEXIST:
error_setg(errp, "Property '%s.%s' can't take value '%s', it's in use",
object_get_typename(OBJECT(dev)), prop->name, value);
break;
default:
case -EINVAL:
error_setg(errp, QERR_PROPERTY_VALUE_BAD,
object_get_typename(OBJECT(dev)), prop->name, value);
break;
case -ENOENT:
error_setg(errp, "Property '%s.%s' can't find value '%s'",
object_get_typename(OBJECT(dev)), prop->name, value);
break;
case 0:
break;
}
}
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)
{
object_property_set_bool(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
{
object_property_set_int(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value)
{
object_property_set_str(OBJECT(dev), name, value, &error_abort);
}
void qdev_prop_set_macaddr(DeviceState *dev, const char *name,
const uint8_t *value)
{
char str[2 * 6 + 5 + 1];
snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
value[0], value[1], value[2], value[3], value[4], value[5]);
object_property_set_str(OBJECT(dev), name, str, &error_abort);
}
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value)
{
Property *prop;
prop = qdev_prop_find(dev, name);
object_property_set_str(OBJECT(dev), name,
qapi_enum_lookup(prop->info->enum_table, value),
&error_abort);
}
static GPtrArray *global_props(void)
{
static GPtrArray *gp;
if (!gp) {
gp = g_ptr_array_new();
}
return gp;
}
void qdev_prop_register_global(GlobalProperty *prop)
{
g_ptr_array_add(global_props(), prop);
}
const GlobalProperty *qdev_find_global_prop(DeviceState *dev,
const char *name)
{
GPtrArray *props = global_props();
const GlobalProperty *p;
int i;
for (i = 0; i < props->len; i++) {
p = g_ptr_array_index(props, i);
if (object_dynamic_cast(OBJECT(dev), p->driver)
&& !strcmp(p->property, name)) {
return p;
}
}
return NULL;
}
int qdev_prop_check_globals(void)
{
int i, ret = 0;
for (i = 0; i < global_props()->len; i++) {
GlobalProperty *prop;
ObjectClass *oc;
DeviceClass *dc;
prop = g_ptr_array_index(global_props(), i);
if (prop->used) {
continue;
}
oc = object_class_by_name(prop->driver);
oc = object_class_dynamic_cast(oc, TYPE_DEVICE);
if (!oc) {
warn_report("global %s.%s has invalid class name",
prop->driver, prop->property);
ret = 1;
continue;
}
dc = DEVICE_CLASS(oc);
if (!dc->hotpluggable && !prop->used) {
warn_report("global %s.%s=%s not used",
prop->driver, prop->property, prop->value);
ret = 1;
continue;
}
}
return ret;
}
void qdev_prop_set_globals(DeviceState *dev)
{
object_apply_global_props(OBJECT(dev), global_props(),
dev->hotplugged ? NULL : &error_fatal);
}
/* --- 64bit unsigned int 'size' type --- */
static void get_size(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_size(v, name, ptr, errp);
}
static void set_size(Object *obj, Visitor *v, const char *name, void *opaque,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_size(v, name, ptr, errp);
}
const PropertyInfo qdev_prop_size = {
.name = "size",
.get = get_size,
.set = set_size,
.set_default_value = set_default_value_uint,
};
/* --- object link property --- */
static void create_link_property(ObjectClass *oc, Property *prop)
{
object_class_property_add_link(oc, prop->name, prop->link_type,
prop->offset,
qdev_prop_allow_set_link_before_realize,
OBJ_PROP_LINK_STRONG);
}
const PropertyInfo qdev_prop_link = {
.name = "link",
.create = create_link_property,
};
/* --- OffAutoPCIBAR off/auto/bar0/bar1/bar2/bar3/bar4/bar5 --- */
const PropertyInfo qdev_prop_off_auto_pcibar = {
.name = "OffAutoPCIBAR",
.description = "off/auto/bar0/bar1/bar2/bar3/bar4/bar5",
.enum_table = &OffAutoPCIBAR_lookup,
.get = qdev_propinfo_get_enum,
.set = qdev_propinfo_set_enum,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- PCIELinkSpeed 2_5/5/8/16 -- */
static void get_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIExpLinkSpeed *p = qdev_get_prop_ptr(dev, prop);
int speed;
switch (*p) {
case QEMU_PCI_EXP_LNK_2_5GT:
speed = PCIE_LINK_SPEED_2_5;
break;
case QEMU_PCI_EXP_LNK_5GT:
speed = PCIE_LINK_SPEED_5;
break;
case QEMU_PCI_EXP_LNK_8GT:
speed = PCIE_LINK_SPEED_8;
break;
case QEMU_PCI_EXP_LNK_16GT:
speed = PCIE_LINK_SPEED_16;
break;
default:
/* Unreachable */
abort();
}
visit_type_enum(v, prop->name, &speed, prop->info->enum_table, errp);
}
static void set_prop_pcielinkspeed(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIExpLinkSpeed *p = qdev_get_prop_ptr(dev, prop);
int speed;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_enum(v, prop->name, &speed, prop->info->enum_table,
errp)) {
return;
}
switch (speed) {
case PCIE_LINK_SPEED_2_5:
*p = QEMU_PCI_EXP_LNK_2_5GT;
break;
case PCIE_LINK_SPEED_5:
*p = QEMU_PCI_EXP_LNK_5GT;
break;
case PCIE_LINK_SPEED_8:
*p = QEMU_PCI_EXP_LNK_8GT;
break;
case PCIE_LINK_SPEED_16:
*p = QEMU_PCI_EXP_LNK_16GT;
break;
default:
/* Unreachable */
abort();
}
}
const PropertyInfo qdev_prop_pcie_link_speed = {
.name = "PCIELinkSpeed",
.description = "2_5/5/8/16",
.enum_table = &PCIELinkSpeed_lookup,
.get = get_prop_pcielinkspeed,
.set = set_prop_pcielinkspeed,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
/* --- PCIELinkWidth 1/2/4/8/12/16/32 -- */
static void get_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIExpLinkWidth *p = qdev_get_prop_ptr(dev, prop);
int width;
switch (*p) {
case QEMU_PCI_EXP_LNK_X1:
width = PCIE_LINK_WIDTH_1;
break;
case QEMU_PCI_EXP_LNK_X2:
width = PCIE_LINK_WIDTH_2;
break;
case QEMU_PCI_EXP_LNK_X4:
width = PCIE_LINK_WIDTH_4;
break;
case QEMU_PCI_EXP_LNK_X8:
width = PCIE_LINK_WIDTH_8;
break;
case QEMU_PCI_EXP_LNK_X12:
width = PCIE_LINK_WIDTH_12;
break;
case QEMU_PCI_EXP_LNK_X16:
width = PCIE_LINK_WIDTH_16;
break;
case QEMU_PCI_EXP_LNK_X32:
width = PCIE_LINK_WIDTH_32;
break;
default:
/* Unreachable */
abort();
}
visit_type_enum(v, prop->name, &width, prop->info->enum_table, errp);
}
static void set_prop_pcielinkwidth(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIExpLinkWidth *p = qdev_get_prop_ptr(dev, prop);
int width;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
if (!visit_type_enum(v, prop->name, &width, prop->info->enum_table,
errp)) {
return;
}
switch (width) {
case PCIE_LINK_WIDTH_1:
*p = QEMU_PCI_EXP_LNK_X1;
break;
case PCIE_LINK_WIDTH_2:
*p = QEMU_PCI_EXP_LNK_X2;
break;
case PCIE_LINK_WIDTH_4:
*p = QEMU_PCI_EXP_LNK_X4;
break;
case PCIE_LINK_WIDTH_8:
*p = QEMU_PCI_EXP_LNK_X8;
break;
case PCIE_LINK_WIDTH_12:
*p = QEMU_PCI_EXP_LNK_X12;
break;
case PCIE_LINK_WIDTH_16:
*p = QEMU_PCI_EXP_LNK_X16;
break;
case PCIE_LINK_WIDTH_32:
*p = QEMU_PCI_EXP_LNK_X32;
break;
default:
/* Unreachable */
abort();
}
}
const PropertyInfo qdev_prop_pcie_link_width = {
.name = "PCIELinkWidth",
.description = "1/2/4/8/12/16/32",
.enum_table = &PCIELinkWidth_lookup,
.get = get_prop_pcielinkwidth,
.set = set_prop_pcielinkwidth,
.set_default_value = qdev_propinfo_set_default_value_enum,
};
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