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s390: provide interface for service interrupt/introduce interrupt.c

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This patch creates interrupt.c. The first user is a callback for hw/*
code to trigger an service interrupt for a given sccb value. Several
interrupt types for s390 are floating (can be delivered to all CPUs).
so this code does not belong to a specific CPU.
Other interrupts (like the virtio one) are also floating and can be
moved here later on.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Christian Borntraeger 2012-07-23 21:37:05 +00:00 committed by Alexander Graf
parent 9abf567d95
commit 000a1a3800
4 changed files with 34 additions and 16 deletions
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2
target-s390x/Makefile.objs
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@ -1,4 +1,4 @@
obj-y += translate.o op_helper.o helper.o cpu.o
obj-y += translate.o op_helper.o helper.o cpu.o interrupt.o
obj-$(CONFIG_SOFTMMU) += machine.o
obj-$(CONFIG_KVM) += kvm.o

3
target-s390x/cpu.h
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@ -320,6 +320,9 @@ S390CPU *s390_cpu_addr2state(uint16_t cpu_addr);
void s390_add_running_cpu(CPUS390XState *env);
unsigned s390_del_running_cpu(CPUS390XState *env);
/* service interrupts are floating therefore we must not pass an cpustate */
void s390_sclp_extint(uint32_t parm);
/* from s390-virtio-bus */
extern const target_phys_addr_t virtio_size;

29
target-s390x/interrupt.c Normal file
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@ -0,0 +1,29 @@
/*
* QEMU S/390 Interrupt support
*
* Copyright IBM, Corp. 2012
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at your
* option) any later version. See the COPYING file in the top-level directory.
*/
#include "cpu.h"
#include "kvm.h"
#if !defined(CONFIG_USER_ONLY)
/* service interrupts are floating therefore we must not pass an cpustate */
void s390_sclp_extint(uint32_t parm)
{
S390CPU *dummy_cpu = s390_cpu_addr2state(0);
CPUS390XState *env = &dummy_cpu->env;
if (kvm_enabled()) {
#ifdef CONFIG_KVM
kvm_s390_interrupt_internal(env, KVM_S390_INT_SERVICE, parm, 0, 1);
#endif
} else {
env->psw.addr += 4;
cpu_inject_ext(env, EXT_SERVICE, parm, 0);
}
}
#endif

16
target-s390x/op_helper.c
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@ -2362,12 +2362,6 @@ static void program_interrupt(CPUS390XState *env, uint32_t code, int ilc)
}
}
static void ext_interrupt(CPUS390XState *env, int type, uint32_t param,
uint64_t param64)
{
cpu_inject_ext(env, type, param, param64);
}
/*
* ret < 0 indicates program check, ret = 0,1,2,3 -> cc
*/
@ -2398,15 +2392,7 @@ int sclp_service_call(CPUS390XState *env, uint32_t sccb, uint64_t code)
stb_phys(sccb + SCP_INCREMENT, 1 << shift);
stw_phys(sccb + SCP_RESPONSE_CODE, 0x10);
if (kvm_enabled()) {
#ifdef CONFIG_KVM
kvm_s390_interrupt_internal(env, KVM_S390_INT_SERVICE,
sccb & ~3, 0, 1);
#endif
} else {
env->psw.addr += 4;
ext_interrupt(env, EXT_SERVICE, sccb & ~3, 0);
}
s390_sclp_extint(sccb & ~3);
break;
default:
#ifdef DEBUG_HELPER