mirror of https://gitee.com/openkylin/qemu.git
121 lines
3.2 KiB
C
121 lines
3.2 KiB
C
/*
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* QEMU S/390 Interrupt support
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*
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* Copyright IBM Corp. 2012, 2014
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at your
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* option) any later version. See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "sysemu/kvm.h"
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#include "hw/s390x/ioinst.h"
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#if !defined(CONFIG_USER_ONLY)
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void cpu_inject_ext(S390CPU *cpu, uint32_t code, uint32_t param,
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uint64_t param64)
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{
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CPUS390XState *env = &cpu->env;
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if (env->ext_index == MAX_EXT_QUEUE - 1) {
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/* ugh - can't queue anymore. Let's drop. */
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return;
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}
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env->ext_index++;
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assert(env->ext_index < MAX_EXT_QUEUE);
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env->ext_queue[env->ext_index].code = code;
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env->ext_queue[env->ext_index].param = param;
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env->ext_queue[env->ext_index].param64 = param64;
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env->pending_int |= INTERRUPT_EXT;
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cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
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}
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static void cpu_inject_io(S390CPU *cpu, uint16_t subchannel_id,
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uint16_t subchannel_number,
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uint32_t io_int_parm, uint32_t io_int_word)
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{
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CPUS390XState *env = &cpu->env;
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int isc = IO_INT_WORD_ISC(io_int_word);
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if (env->io_index[isc] == MAX_IO_QUEUE - 1) {
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/* ugh - can't queue anymore. Let's drop. */
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return;
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}
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env->io_index[isc]++;
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assert(env->io_index[isc] < MAX_IO_QUEUE);
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env->io_queue[env->io_index[isc]][isc].id = subchannel_id;
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env->io_queue[env->io_index[isc]][isc].nr = subchannel_number;
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env->io_queue[env->io_index[isc]][isc].parm = io_int_parm;
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env->io_queue[env->io_index[isc]][isc].word = io_int_word;
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env->pending_int |= INTERRUPT_IO;
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cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
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}
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static void cpu_inject_crw_mchk(S390CPU *cpu)
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{
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CPUS390XState *env = &cpu->env;
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if (env->mchk_index == MAX_MCHK_QUEUE - 1) {
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/* ugh - can't queue anymore. Let's drop. */
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return;
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}
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env->mchk_index++;
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assert(env->mchk_index < MAX_MCHK_QUEUE);
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env->mchk_queue[env->mchk_index].type = 1;
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env->pending_int |= INTERRUPT_MCHK;
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cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
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}
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/*
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* All of the following interrupts are floating, i.e. not per-vcpu.
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* We just need a dummy cpustate in order to be able to inject in the
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* non-kvm case.
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*/
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void s390_sclp_extint(uint32_t parm)
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{
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if (kvm_enabled()) {
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kvm_s390_service_interrupt(parm);
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} else {
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S390CPU *dummy_cpu = s390_cpu_addr2state(0);
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cpu_inject_ext(dummy_cpu, EXT_SERVICE, parm, 0);
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}
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}
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void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
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uint32_t io_int_parm, uint32_t io_int_word)
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{
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if (kvm_enabled()) {
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kvm_s390_io_interrupt(subchannel_id, subchannel_nr, io_int_parm,
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io_int_word);
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} else {
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S390CPU *dummy_cpu = s390_cpu_addr2state(0);
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cpu_inject_io(dummy_cpu, subchannel_id, subchannel_nr, io_int_parm,
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io_int_word);
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}
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}
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void s390_crw_mchk(void)
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{
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if (kvm_enabled()) {
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kvm_s390_crw_mchk();
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} else {
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S390CPU *dummy_cpu = s390_cpu_addr2state(0);
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cpu_inject_crw_mchk(dummy_cpu);
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}
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}
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#endif
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