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         CPUS390XState *env = &dummy_cpu->env;
  26
  27         env->psw.addr += 4;
  28         cpu_inject_ext(dummy_cpu, EXT_SERVICE, parm, 0);
  29     }
  30 }
  31
  32 void s390_virtio_irq(int config_change, uint64_t token)
  33 {
  34     if (kvm_enabled()) {
  35         kvm_s390_virtio_irq(config_change, token);
  36     } else {
  37         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  38
  39         cpu_inject_ext(dummy_cpu, EXT_VIRTIO, config_change, token);
  40     }
  41 }
  42
  43 void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
  44                        uint32_t io_int_parm, uint32_t io_int_word)
  45 {
  46     if (kvm_enabled()) {
  47         kvm_s390_io_interrupt(subchannel_id, subchannel_nr, io_int_parm,
  48                               io_int_word);
  49     } else {
  50         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  51
  52         cpu_inject_io(dummy_cpu, subchannel_id, subchannel_nr, io_int_parm,
  53                       io_int_word);
  54     }
  55 }
  56
  57 void s390_crw_mchk(void)
  58 {
  59     if (kvm_enabled()) {
  60         kvm_s390_crw_mchk();
  61     } else {
  62         S390CPU *dummy_cpu = s390_cpu_addr2state(0);
  63
  64         cpu_inject_crw_mchk(dummy_cpu);
  65     }
  66 }
  67
  68 #endif