target-s390x/interrupt.c

   1 /*
   2  * QEMU S/390 Interrupt support
   3  *
   4  * Copyright IBM Corp. 2012, 2014
   5  *
   6  * This work is licensed under the terms of the GNU GPL, version 2 or (at your
   7  * option) any later version.  See the COPYING file in the top-level directory.
   8  */
   9
  10 #include "qemu/osdep.h"
  11 #include "cpu.h"
  12 #include "sysemu/kvm.h"
  13
  14 /*
  15  * All of the following interrupts are floating, i.e. not per-vcpu.
  16  * We just need a dummy cpustate in order to be able to inject in the
  17  * non-kvm case.
  18  */
  19 #if !defined(CONFIG_USER_ONLY)
  20 void s390_sclp_extint(uint32_t parm)
  21 {
  22     if (kvm_enabled()) {
  23         kvm_s390_service_interrupt(parm);
  24     } else {
  25         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  26
  27         cpu_inject_ext(dummy_cpu, EXT_SERVICE, parm, 0);
  28     }
  29 }
  30
  31 void s390_virtio_irq(int config_change, uint64_t token)
  32 {
  33     if (kvm_enabled()) {
  34         kvm_s390_virtio_irq(config_change, token);
  35     } else {
  36         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  37
  38         cpu_inject_ext(dummy_cpu, EXT_VIRTIO, config_change, token);
  39     }
  40 }
  41
  42 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
  43                        uint32_t io_int_parm, uint32_t io_int_word)
  44 {
  45     if (kvm_enabled()) {
  46         kvm_s390_io_interrupt(subchannel_id, subchannel_nr, io_int_parm,
  47                               io_int_word);
  48     } else {
  49         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  50
  51         cpu_inject_io(dummy_cpu, subchannel_id, subchannel_nr, io_int_parm,
  52                       io_int_word);
  53     }
  54 }
  55
  56 void s390_crw_mchk(void)
  57 {
  58     if (kvm_enabled()) {
  59         kvm_s390_crw_mchk();
  60     } else {
  61         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  62
  63         cpu_inject_crw_mchk(dummy_cpu);
  64     }
  65 }
  66
  67 #endif