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 #ifdef CONFIG_KVM
  16 #include "hw/s390x/s390-virtio-ccw.h"
  17
  18 static inline bool s390_is_pv(void)
  19 {
  20     static S390CcwMachineState *ccw;
  21     Object *obj;
  22
  23     if (ccw) {
  24         return ccw->pv;
  25     }
  26
  27     /* we have to bail out for the "none" machine */
  28     obj = object_dynamic_cast(qdev_get_machine(),
  29                               TYPE_S390_CCW_MACHINE);
  30     if (!obj) {
  31         return false;
  32     }
  33     ccw = S390_CCW_MACHINE(obj);
  34     return ccw->pv;
  35 }
  36
  37 int s390_pv_vm_enable(void);
  38 void s390_pv_vm_disable(void);
  39 int s390_pv_set_sec_parms(uint64_t origin, uint64_t length);
  40 int s390_pv_unpack(uint64_t addr, uint64_t size, uint64_t tweak);
  41 void s390_pv_perf_clear_reset(void);
  42 int s390_pv_verify(void);
  43 void s390_pv_unshare(void);
  44 #else /* CONFIG_KVM */
  45 static inline bool s390_is_pv(void) { return false; }
  46 static inline int s390_pv_vm_enable(void) { return 0; }
  47 static inline void s390_pv_vm_disable(void) {}
  48 static inline int s390_pv_set_sec_parms(uint64_t origin, uint64_t length) { return 0; }
  49 static inline int s390_pv_unpack(uint64_t addr, uint64_t size, uint64_t tweak) { return 0; }
  50 static inline void s390_pv_perf_clear_reset(void) {}
  51 static inline int s390_pv_verify(void) { return 0; }
  52 static inline void s390_pv_unshare(void) {}
  53 #endif /* CONFIG_KVM */
  54
  55 #endif /* HW_S390_PV_H */