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/*
* s390 storage key device
*
* Copyright 2015 IBM Corp.
* Author(s): Jason J. Herne <jjherne@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at
* your option) any later version. See the COPYING file in the top-level
* directory.
*/
#include "qemu/osdep.h"
#include "hw/s390x/storage-keys.h"
#include "sysemu/kvm.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
static bool kvm_s390_skeys_are_enabled(S390SKeysState *ss)
{
S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss);
uint8_t single_key;
int r;
r = skeyclass->get_skeys(ss, 0, 1, &single_key);
if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) {
error_report("S390_GET_KEYS error %d", r);
}
return (r == 0);
}
static int kvm_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn,
uint64_t count, uint8_t *keys)
{
struct kvm_s390_skeys args = {
.start_gfn = start_gfn,
.count = count,
.skeydata_addr = (__u64)keys
};
return kvm_vm_ioctl(kvm_state, KVM_S390_GET_SKEYS, &args);
}
static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn,
uint64_t count, uint8_t *keys)
{
struct kvm_s390_skeys args = {
.start_gfn = start_gfn,
.count = count,
.skeydata_addr = (__u64)keys
};
return kvm_vm_ioctl(kvm_state, KVM_S390_SET_SKEYS, &args);
}
static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data)
{
S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);
skeyclass->skeys_are_enabled = kvm_s390_skeys_are_enabled;
skeyclass->get_skeys = kvm_s390_skeys_get;
skeyclass->set_skeys = kvm_s390_skeys_set;
/* Reason: Internal device (only one skeys device for the whole memory) */
dc->user_creatable = false;
}
static const TypeInfo kvm_s390_skeys_info = {
.name = TYPE_KVM_S390_SKEYS,
.parent = TYPE_S390_SKEYS,
.instance_size = sizeof(S390SKeysState),
.class_init = kvm_s390_skeys_class_init,
.class_size = sizeof(S390SKeysClass),
};
static void kvm_s390_skeys_register_types(void)
{
type_register_static(&kvm_s390_skeys_info);
}
type_init(kvm_s390_skeys_register_types)
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