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qemu/hw/core/qdev-properties.c

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#include "net/net.h"
#include "hw/qdev.h"
#include "qapi/qmp/qerror.h"
#include "sysemu/blockdev.h"
#include "hw/block/block.h"
#include "net/hub.h"
#include "qapi/visitor.h"
#include "sysemu/char.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_get_prop_ptr(DeviceState *dev, Property *prop)
{
void *ptr = dev;
ptr += prop->offset;
return ptr;
}
static void get_enum(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_enum(v, ptr, prop->info->enum_table,
prop->info->name, prop->name, errp);
}
static void set_enum(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, prop->info->enum_table,
prop->info->name, prop->name, errp);
}
/* 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 int prop_print_bit(DeviceState *dev, Property *prop, char *dest,
size_t len)
{
uint32_t *p = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, (*p & qdev_get_prop_mask(prop)) ? "on" : "off");
}
static void prop_get_bit(Object *obj, Visitor *v, void *opaque,
const char *name, 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, &value, name, errp);
}
static void prop_set_bit(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
Error *local_err = NULL;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_bool(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
bit_prop_set(dev, prop, value);
}
PropertyInfo qdev_prop_bit = {
.name = "boolean",
.legacy_name = "on/off",
.print = prop_print_bit,
.get = prop_get_bit,
.set = prop_set_bit,
};
/* --- bool --- */
static void get_bool(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
bool *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_bool(v, ptr, name, errp);
}
static void set_bool(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
PropertyInfo qdev_prop_bool = {
.name = "boolean",
.get = get_bool,
.set = set_bool,
};
/* --- 8bit integer --- */
static void get_uint8(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint8(v, ptr, name, errp);
}
static void set_uint8(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
PropertyInfo qdev_prop_uint8 = {
.name = "uint8",
.get = get_uint8,
.set = set_uint8,
};
/* --- 8bit hex value --- */
static int parse_hex8(DeviceState *dev, Property *prop, const char *str)
{
uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
char *end;
if (str[0] != '0' || str[1] != 'x') {
return -EINVAL;
}
*ptr = strtoul(str, &end, 16);
if ((*end != '\0') || (end == str)) {
return -EINVAL;
}
return 0;
}
static int print_hex8(DeviceState *dev, Property *prop, char *dest, size_t len)
{
uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "0x%" PRIx8, *ptr);
}
PropertyInfo qdev_prop_hex8 = {
.name = "uint8",
.legacy_name = "hex8",
.parse = parse_hex8,
.print = print_hex8,
.get = get_uint8,
.set = set_uint8,
};
/* --- 16bit integer --- */
static void get_uint16(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint16(v, ptr, name, errp);
}
static void set_uint16(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
PropertyInfo qdev_prop_uint16 = {
.name = "uint16",
.get = get_uint16,
.set = set_uint16,
};
/* --- 32bit integer --- */
static void get_uint32(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint32(v, ptr, name, errp);
}
static void set_uint32(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
static void get_int32(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_int32(v, ptr, name, errp);
}
static void set_int32(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
PropertyInfo qdev_prop_uint32 = {
.name = "uint32",
.get = get_uint32,
.set = set_uint32,
};
PropertyInfo qdev_prop_int32 = {
.name = "int32",
.get = get_int32,
.set = set_int32,
};
/* --- 32bit hex value --- */
static int parse_hex32(DeviceState *dev, Property *prop, const char *str)
{
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
char *end;
if (str[0] != '0' || str[1] != 'x') {
return -EINVAL;
}
*ptr = strtoul(str, &end, 16);
if ((*end != '\0') || (end == str)) {
return -EINVAL;
}
return 0;
}
static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)
{
uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "0x%" PRIx32, *ptr);
}
PropertyInfo qdev_prop_hex32 = {
.name = "uint32",
.legacy_name = "hex32",
.parse = parse_hex32,
.print = print_hex32,
.get = get_uint32,
.set = set_uint32,
};
/* --- 64bit integer --- */
static void get_uint64(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_uint64(v, ptr, name, errp);
}
static void set_uint64(Object *obj, Visitor *v, void *opaque,
const char *name, 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, ptr, name, errp);
}
PropertyInfo qdev_prop_uint64 = {
.name = "uint64",
.get = get_uint64,
.set = set_uint64,
};
/* --- 64bit hex value --- */
static int parse_hex64(DeviceState *dev, Property *prop, const char *str)
{
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
char *end;
if (str[0] != '0' || str[1] != 'x') {
return -EINVAL;
}
*ptr = strtoull(str, &end, 16);
if ((*end != '\0') || (end == str)) {
return -EINVAL;
}
return 0;
}
static int print_hex64(DeviceState *dev, Property *prop, char *dest, size_t len)
{
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
return snprintf(dest, len, "0x%" PRIx64, *ptr);
}
PropertyInfo qdev_prop_hex64 = {
.name = "uint64",
.legacy_name = "hex64",
.parse = parse_hex64,
.print = print_hex64,
.get = get_uint64,
.set = set_uint64,
};
/* --- 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 int print_string(DeviceState *dev, Property *prop, char *dest,
size_t len)
{
char **ptr = qdev_get_prop_ptr(dev, prop);
if (!*ptr) {
return snprintf(dest, len, "<null>");
}
return snprintf(dest, len, "\"%s\"", *ptr);
}
static void get_string(Object *obj, Visitor *v, void *opaque,
const char *name, 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, &str, name, errp);
} else {
visit_type_str(v, ptr, name, errp);
}
}
static void set_string(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
char **ptr = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, &str, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (*ptr) {
g_free(*ptr);
}
*ptr = str;
}
PropertyInfo qdev_prop_string = {
.name = "string",
.print = print_string,
.release = release_string,
.get = get_string,
.set = set_string,
};
/* --- pointer --- */
/* Not a proper property, just for dirty hacks. TODO Remove it! */
PropertyInfo qdev_prop_ptr = {
.name = "ptr",
};
/* --- 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, void *opaque,
const char *name, 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, &p, name, errp);
}
static void set_mac(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
MACAddr *mac = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
int i, pos;
char *str, *p;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, &str, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
for (i = 0, pos = 0; i < 6; i++, pos += 3) {
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;
}
}
mac->a[i] = strtol(str+pos, &p, 16);
}
g_free(str);
return;
inval:
error_set_from_qdev_prop_error(errp, EINVAL, dev, prop, str);
g_free(str);
}
PropertyInfo qdev_prop_macaddr = {
.name = "macaddr",
.get = get_mac,
.set = set_mac,
};
/* --- lost tick policy --- */
static const char *lost_tick_policy_table[LOST_TICK_MAX+1] = {
[LOST_TICK_DISCARD] = "discard",
[LOST_TICK_DELAY] = "delay",
[LOST_TICK_MERGE] = "merge",
[LOST_TICK_SLEW] = "slew",
[LOST_TICK_MAX] = NULL,
};
QEMU_BUILD_BUG_ON(sizeof(LostTickPolicy) != sizeof(int));
PropertyInfo qdev_prop_losttickpolicy = {
.name = "LostTickPolicy",
.enum_table = lost_tick_policy_table,
.get = get_enum,
.set = set_enum,
};
/* --- BIOS CHS translation */
static const char *bios_chs_trans_table[] = {
[BIOS_ATA_TRANSLATION_AUTO] = "auto",
[BIOS_ATA_TRANSLATION_NONE] = "none",
[BIOS_ATA_TRANSLATION_LBA] = "lba",
};
PropertyInfo qdev_prop_bios_chs_trans = {
.name = "bios-chs-trans",
.enum_table = bios_chs_trans_table,
.get = get_enum,
.set = set_enum,
};
/* --- pci address --- */
/*
* bus-local address, i.e. "$slot" or "$slot.$fn"
*/
static void set_pci_devfn(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
int32_t value, *ptr = qdev_get_prop_ptr(dev, prop);
unsigned int slot, fn, n;
Error *local_err = NULL;
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, &str, name, &local_err);
if (local_err) {
error_free(local_err);
local_err = NULL;
visit_type_int32(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
} else if (value < -1 || value > 255) {
error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
"pci_devfn");
} else {
*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);
}
}
PropertyInfo qdev_prop_pci_devfn = {
.name = "int32",
.legacy_name = "pci-devfn",
.print = print_pci_devfn,
.get = get_int32,
.set = set_pci_devfn,
};
/* --- blocksize --- */
static void set_blocksize(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
const int64_t min = 512;
const int64_t max = 32768;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_uint16(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
dev->id?:"", name, (int64_t)value, min, max);
return;
}
/* We rely on power-of-2 blocksizes for bitmasks */
if ((value & (value - 1)) != 0) {
error_set(errp, QERR_PROPERTY_VALUE_NOT_POWER_OF_2,
dev->id?:"", name, (int64_t)value);
return;
}
*ptr = value;
}
PropertyInfo qdev_prop_blocksize = {
.name = "blocksize",
.get = get_uint16,
.set = set_blocksize,
};
/* --- pci host address --- */
static void get_pci_host_devaddr(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
char buffer[] = "xxxx:xx:xx.x";
char *p = buffer;
int rc = 0;
rc = snprintf(buffer, sizeof(buffer), "%04x:%02x:%02x.%d",
addr->domain, addr->bus, addr->slot, addr->function);
assert(rc == sizeof(buffer) - 1);
visit_type_str(v, &p, name, 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, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
PCIHostDeviceAddress *addr = qdev_get_prop_ptr(dev, prop);
Error *local_err = NULL;
char *str, *p;
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;
}
visit_type_str(v, &str, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
p = str;
val = strtoul(p, &e, 16);
if (e == p || *e != ':') {
goto inval;
}
bus = val;
p = e + 1;
val = strtoul(p, &e, 16);
if (e == p) {
goto inval;
}
if (*e == ':') {
dom = bus;
bus = val;
p = e + 1;
val = strtoul(p, &e, 16);
if (e == p) {
goto inval;
}
}
slot = val;
if (*e != '.') {
goto inval;
}
p = e + 1;
val = strtoul(p, &e, 10);
if (e == p) {
goto inval;
}
func = val;
if (dom > 0xffff || bus > 0xff || slot > 0x1f || func > 7) {
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);
}
PropertyInfo qdev_prop_pci_host_devaddr = {
.name = "pci-host-devaddr",
.get = get_pci_host_devaddr,
.set = set_pci_host_devaddr,
};
/* --- 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, void *opaque,
const char *name, 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;
}
visit_type_uint32(v, alenptr, name, errp);
if (error_is_set(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, errp);
if (error_is_set(errp)) {
return;
}
}
}
PropertyInfo qdev_prop_arraylen = {
.name = "uint32",
.get = get_uint32,
.set = set_prop_arraylen,
};
/* --- 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_set(errp, QERR_PROPERTY_VALUE_IN_USE,
object_get_typename(OBJECT(dev)), prop->name, value);
break;
default:
case -EINVAL:
error_set(errp, QERR_PROPERTY_VALUE_BAD,
object_get_typename(OBJECT(dev)), prop->name, value);
break;
case -ENOENT:
error_set(errp, QERR_PROPERTY_VALUE_NOT_FOUND,
object_get_typename(OBJECT(dev)), prop->name, value);
break;
case 0:
break;
}
}
void qdev_prop_parse(DeviceState *dev, const char *name, const char *value,
Error **errp)
{
char *legacy_name;
legacy_name = g_strdup_printf("legacy-%s", name);
if (object_property_get_type(OBJECT(dev), legacy_name, NULL)) {
object_property_parse(OBJECT(dev), value, legacy_name, errp);
} else {
object_property_parse(OBJECT(dev), value, name, errp);
}
g_free(legacy_name);
}
void qdev_prop_set_bit(DeviceState *dev, const char *name, bool value)
{
Error *errp = NULL;
object_property_set_bool(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_uint8(DeviceState *dev, const char *name, uint8_t value)
{
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)
{
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)
{
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_int32(DeviceState *dev, const char *name, int32_t value)
{
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_uint64(DeviceState *dev, const char *name, uint64_t value)
{
Error *errp = NULL;
object_property_set_int(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_string(DeviceState *dev, const char *name, const char *value)
{
Error *errp = NULL;
object_property_set_str(OBJECT(dev), value, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value)
{
Error *errp = NULL;
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), str, name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_enum(DeviceState *dev, const char *name, int value)
{
Property *prop;
Error *errp = NULL;
prop = qdev_prop_find(dev, name);
object_property_set_str(OBJECT(dev), prop->info->enum_table[value],
name, &errp);
assert_no_error(errp);
}
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)
{
Property *prop;
void **ptr;
prop = qdev_prop_find(dev, name);
assert(prop && prop->info == &qdev_prop_ptr);
ptr = qdev_get_prop_ptr(dev, prop);
*ptr = value;
}
static QTAILQ_HEAD(, GlobalProperty) global_props =
QTAILQ_HEAD_INITIALIZER(global_props);
void qdev_prop_register_global(GlobalProperty *prop)
{
QTAILQ_INSERT_TAIL(&global_props, prop, next);
}
void qdev_prop_register_global_list(GlobalProperty *props)
{
int i;
for (i = 0; props[i].driver != NULL; i++) {
qdev_prop_register_global(props+i);
}
}
void qdev_prop_set_globals_for_type(DeviceState *dev, const char *typename,
Error **errp)
{
GlobalProperty *prop;
QTAILQ_FOREACH(prop, &global_props, next) {
Error *err = NULL;
if (strcmp(typename, prop->driver) != 0) {
continue;
}
qdev_prop_parse(dev, prop->property, prop->value, &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
}
}
void qdev_prop_set_globals(DeviceState *dev, Error **errp)
{
ObjectClass *class = object_get_class(OBJECT(dev));
do {
Error *err = NULL;
qdev_prop_set_globals_for_type(dev, object_class_get_name(class),
&err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
class = object_class_get_parent(class);
} while (class);
}
/* --- 64bit unsigned int 'size' type --- */
static void get_size(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_size(v, ptr, name, errp);
}
static void set_size(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
visit_type_size(v, ptr, name, errp);
}
static int parse_size(DeviceState *dev, Property *prop, const char *str)
{
uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
Error *errp = NULL;
if (str != NULL) {
parse_option_size(prop->name, str, ptr, &errp);
}
assert_no_error(errp);
return 0;
}
static int print_size(DeviceState *dev, Property *prop, char *dest, size_t len)
{
static const char suffixes[] = { 'B', 'K', 'M', 'G', 'T' };
uint64_t div, val = *(uint64_t *)qdev_get_prop_ptr(dev, prop);
int i;
/* Compute floor(log2(val)). */
i = 64 - clz64(val);
/* Find the power of 1024 that we'll display as the units. */
i /= 10;
if (i >= ARRAY_SIZE(suffixes)) {
i = ARRAY_SIZE(suffixes) - 1;
}
div = 1ULL << (i * 10);
return snprintf(dest, len, "%0.03f%c", (double)val/div, suffixes[i]);
}
PropertyInfo qdev_prop_size = {
.name = "size",
.parse = parse_size,
.print = print_size,
.get = get_size,
.set = set_size,
};
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