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 "cpu.h"
  11 #include "sysemu/kvm.h"
  12
  13 /*
  14  * All of the following interrupts are floating, i.e. not per-vcpu.
  15  * We just need a dummy cpustate in order to be able to inject in the
  16  * non-kvm case.
  17  */
  18 #if !defined(CONFIG_USER_ONLY)
  19 void s390_sclp_extint(uint32_t parm)
  20 {
  21     if (kvm_enabled()) {
  22         kvm_s390_service_interrupt(parm);
  23     } else {
  24         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  25
  26         cpu_inject_ext(dummy_cpu, EXT_SERVICE, parm, 0);
  27     }
  28 }
  29
  30 void s390_virtio_irq(int config_change, uint64_t token)
  31 {
  32     if (kvm_enabled()) {
  33         kvm_s390_virtio_irq(config_change, token);
  34     } else {
  35         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  36
  37         cpu_inject_ext(dummy_cpu, EXT_VIRTIO, config_change, token);
  38     }
  39 }
  40
  41 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
  42                        uint32_t io_int_parm, uint32_t io_int_word)
  43 {
  44     if (kvm_enabled()) {
  45         kvm_s390_io_interrupt(subchannel_id, subchannel_nr, io_int_parm,
  46                               io_int_word);
  47     } else {
  48         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  49
  50         cpu_inject_io(dummy_cpu, subchannel_id, subchannel_nr, io_int_parm,
  51                       io_int_word);
  52     }
  53 }
  54
  55 void s390_crw_mchk(void)
  56 {
  57     if (kvm_enabled()) {
  58         kvm_s390_crw_mchk();
  59     } else {
  60         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  61
  62         cpu_inject_crw_mchk(dummy_cpu);
  63     }
  64 }
  65
  66 #endif