include/hw/s390x/pv.h

   1 /*
   2  * Protected Virtualization header
   3  *
   4  * Copyright IBM Corp. 2020
   5  * Author(s):
   6  *  Janosch Frank <frankja@linux.ibm.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or (at
   9  * your option) any later version. See the COPYING file in the top-level
  10  * directory.
  11  */
  12 #ifndef HW_S390_PV_H
  13 #define HW_S390_PV_H
  14
  15 #include "qapi/error.h"
  16 #include "sysemu/kvm.h"
  17 #include "hw/s390x/s390-virtio-ccw.h"
  18
  19 #ifdef CONFIG_KVM
  20 #include "cpu.h"
  21
  22 static inline bool s390_is_pv(void)
  23 {
  24     static S390CcwMachineState *ccw;
  25     Object *obj;
  26
  27     if (ccw) {
  28         return ccw->pv;
  29     }
  30
  31     /* we have to bail out for the "none" machine */
  32     obj = object_dynamic_cast(qdev_get_machine(),
  33                               TYPE_S390_CCW_MACHINE);
  34     if (!obj) {
  35         return false;
  36     }
  37     ccw = S390_CCW_MACHINE(obj);
  38     return ccw->pv;
  39 }
  40
  41 int s390_pv_query_info(void);
  42 int s390_pv_vm_enable(void);
  43 void s390_pv_vm_disable(void);
  44 bool s390_pv_vm_try_disable_async(S390CcwMachineState *ms);
  45 int s390_pv_set_sec_parms(uint64_t origin, uint64_t length);
  46 int s390_pv_unpack(uint64_t addr, uint64_t size, uint64_t tweak);
  47 void s390_pv_prep_reset(void);
  48 int s390_pv_verify(void);
  49 void s390_pv_unshare(void);
  50 void s390_pv_inject_reset_error(CPUState *cs);
  51 uint64_t kvm_s390_pv_dmp_get_size_cpu(void);
  52 uint64_t kvm_s390_pv_dmp_get_size_mem_state(void);
  53 uint64_t kvm_s390_pv_dmp_get_size_completion_data(void);
  54 bool kvm_s390_pv_info_basic_valid(void);
  55 int kvm_s390_dump_init(void);
  56 int kvm_s390_dump_cpu(S390CPU *cpu, void *buff);
  57 int kvm_s390_dump_mem_state(uint64_t addr, size_t len, void *dest);
  58 int kvm_s390_dump_completion_data(void *buff);
  59 #else /* CONFIG_KVM */
  60 static inline bool s390_is_pv(void) { return false; }
  61 static inline int s390_pv_query_info(void) { return 0; }
  62 static inline int s390_pv_vm_enable(void) { return 0; }
  63 static inline void s390_pv_vm_disable(void) {}
  64 static inline bool s390_pv_vm_try_disable_async(S390CcwMachineState *ms) { return false; }
  65 static inline int s390_pv_set_sec_parms(uint64_t origin, uint64_t length) { return 0; }
  66 static inline int s390_pv_unpack(uint64_t addr, uint64_t size, uint64_t tweak) { return 0; }
  67 static inline void s390_pv_prep_reset(void) {}
  68 static inline int s390_pv_verify(void) { return 0; }
  69 static inline void s390_pv_unshare(void) {}
  70 static inline void s390_pv_inject_reset_error(CPUState *cs) {};
  71 static inline uint64_t kvm_s390_pv_dmp_get_size_cpu(void) { return 0; }
  72 static inline uint64_t kvm_s390_pv_dmp_get_size_mem_state(void) { return 0; }
  73 static inline uint64_t kvm_s390_pv_dmp_get_size_completion_data(void) { return 0; }
  74 static inline bool kvm_s390_pv_info_basic_valid(void) { return false; }
  75 static inline int kvm_s390_dump_init(void) { return 0; }
  76 static inline int kvm_s390_dump_cpu(S390CPU *cpu, void *buff) { return 0; }
  77 static inline int kvm_s390_dump_mem_state(uint64_t addr, size_t len,
  78                                           void *dest) { return 0; }
  79 static inline int kvm_s390_dump_completion_data(void *buff) { return 0; }
  80 #endif /* CONFIG_KVM */
  81
  82 int s390_pv_kvm_init(ConfidentialGuestSupport *cgs, Error **errp);
  83 static inline int s390_pv_init(ConfidentialGuestSupport *cgs, Error **errp)
  84 {
  85     if (!cgs) {
  86         return 0;
  87     }
  88     if (kvm_enabled()) {
  89         return s390_pv_kvm_init(cgs, errp);
  90     }
  91
  92     error_setg(errp, "Protected Virtualization requires KVM");
  93     return -1;
  94 }
  95
  96 #endif /* HW_S390_PV_H */