1 /* 2 * s390 storage key device 3 * 4 * Copyright 2015 IBM Corp. 5 * Author(s): Jason J. Herne <jjherne@linux.vnet.ibm.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or (at 8 * your option) any later version. See the COPYING file in the top-level 9 * directory. 10 */ 11 12 #include "hw/s390x/storage-keys.h" 13 #include "sysemu/kvm.h" 14 #include "qemu/error-report.h" 15 16 static int kvm_s390_skeys_enabled(S390SKeysState *ss) 17 { 18 S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss); 19 uint8_t single_key; 20 int r; 21 22 r = skeyclass->get_skeys(ss, 0, 1, &single_key); 23 if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) { 24 error_report("S390_GET_KEYS error %d", r); 25 } 26 return (r == 0); 27 } 28 29 static int kvm_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn, 30 uint64_t count, uint8_t *keys) 31 { 32 struct kvm_s390_skeys args = { 33 .start_gfn = start_gfn, 34 .count = count, 35 .skeydata_addr = (__u64)keys 36 }; 37 38 return kvm_vm_ioctl(kvm_state, KVM_S390_GET_SKEYS, &args); 39 } 40 41 static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn, 42 uint64_t count, uint8_t *keys) 43 { 44 struct kvm_s390_skeys args = { 45 .start_gfn = start_gfn, 46 .count = count, 47 .skeydata_addr = (__u64)keys 48 }; 49 50 return kvm_vm_ioctl(kvm_state, KVM_S390_SET_SKEYS, &args); 51 } 52 53 static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data) 54 { 55 S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc); 56 57 skeyclass->skeys_enabled = kvm_s390_skeys_enabled; 58 skeyclass->get_skeys = kvm_s390_skeys_get; 59 skeyclass->set_skeys = kvm_s390_skeys_set; 60 } 61 62 static const TypeInfo kvm_s390_skeys_info = { 63 .name = TYPE_KVM_S390_SKEYS, 64 .parent = TYPE_S390_SKEYS, 65 .instance_size = sizeof(S390SKeysState), 66 .class_init = kvm_s390_skeys_class_init, 67 .class_size = sizeof(S390SKeysClass), 68 }; 69 70 static void kvm_s390_skeys_register_types(void) 71 { 72 type_register_static(&kvm_s390_skeys_info); 73 } 74 75 type_init(kvm_s390_skeys_register_types) 76