projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 0efe406c JH |
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 | ||
| 9615495a | 12 | #include "qemu/osdep.h" |
| 0efe406c JH |
13 | #include "hw/s390x/storage-keys.h" |
| 14 | #include "sysemu/kvm.h" | |
| 15 | #include "qemu/error-report.h" | |
| 16 | ||
| 17 | static int kvm_s390_skeys_enabled(S390SKeysState *ss) | |
| 18 | { | |
| 19 | S390SKeysClass *skeyclass = S390_SKEYS_GET_CLASS(ss); | |
| 20 | uint8_t single_key; | |
| 21 | int r; | |
| 22 | ||
| 23 | r = skeyclass->get_skeys(ss, 0, 1, &single_key); | |
| 24 | if (r != 0 && r != KVM_S390_GET_SKEYS_NONE) { | |
| 9af9e0fe | 25 | error_report("S390_GET_KEYS error %d", r); |
| 0efe406c JH |
26 | } |
| 27 | return (r == 0); | |
| 28 | } | |
| 29 | ||
| 30 | static int kvm_s390_skeys_get(S390SKeysState *ss, uint64_t start_gfn, | |
| 31 | uint64_t count, uint8_t *keys) | |
| 32 | { | |
| 33 | struct kvm_s390_skeys args = { | |
| 34 | .start_gfn = start_gfn, | |
| 35 | .count = count, | |
| 36 | .skeydata_addr = (__u64)keys | |
| 37 | }; | |
| 38 | ||
| 39 | return kvm_vm_ioctl(kvm_state, KVM_S390_GET_SKEYS, &args); | |
| 40 | } | |
| 41 | ||
| 42 | static int kvm_s390_skeys_set(S390SKeysState *ss, uint64_t start_gfn, | |
| 43 | uint64_t count, uint8_t *keys) | |
| 44 | { | |
| 45 | struct kvm_s390_skeys args = { | |
| 46 | .start_gfn = start_gfn, | |
| 47 | .count = count, | |
| 48 | .skeydata_addr = (__u64)keys | |
| 49 | }; | |
| 50 | ||
| 51 | return kvm_vm_ioctl(kvm_state, KVM_S390_SET_SKEYS, &args); | |
| 52 | } | |
| 53 | ||
| 54 | static void kvm_s390_skeys_class_init(ObjectClass *oc, void *data) | |
| 55 | { | |
| 56 | S390SKeysClass *skeyclass = S390_SKEYS_CLASS(oc); | |
| 574ee06d | 57 | DeviceClass *dc = DEVICE_CLASS(oc); |
| 0efe406c JH |
58 | |
| 59 | skeyclass->skeys_enabled = kvm_s390_skeys_enabled; | |
| 60 | skeyclass->get_skeys = kvm_s390_skeys_get; | |
| 61 | skeyclass->set_skeys = kvm_s390_skeys_set; | |
| 574ee06d TH |
62 | |
| 63 | /* Reason: Internal device (only one skeys device for the whole memory) */ | |
| 64 | dc->user_creatable = false; | |
| 0efe406c JH |
65 | } |
| 66 | ||
| 67 | static const TypeInfo kvm_s390_skeys_info = { | |
| 68 | .name = TYPE_KVM_S390_SKEYS, | |
| 69 | .parent = TYPE_S390_SKEYS, | |
| 70 | .instance_size = sizeof(S390SKeysState), | |
| 71 | .class_init = kvm_s390_skeys_class_init, | |
| 72 | .class_size = sizeof(S390SKeysClass), | |
| 73 | }; | |
| 74 | ||
| 75 | static void kvm_s390_skeys_register_types(void) | |
| 76 | { | |
| 77 | type_register_static(&kvm_s390_skeys_info); | |
| 78 | } | |
| 79 | ||
| 80 | type_init(kvm_s390_skeys_register_types) |