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s390x/kvm: factor out build_channel_report_mcic() into cpu.h 

We'll need it later on in two places. Refactor it to just indicate the
validity bits. While at it, introduce a define for the used CR14 bit (we'll
also need later on).

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171208160207.26494-2-david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
This commit is contained in:
David Hildenbrand 2017-12-08 17:01:54 +01:00 committed by Cornelia Huck
parent 864c251257
commit b700d75eda
2 changed files with 25 additions and 23 deletions
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23
target/s390x/cpu.h
View File

@ -351,6 +351,9 @@ extern const struct VMStateDescription vmstate_s390_cpu;
#define CR0_CPU_TIMER_SC 0x0000000000000400ULL
#define CR0_SERVICE_SC 0x0000000000000200ULL
/* Control register 14 bits */
#define CR14_CHANNEL_REPORT_SC 0x0000000010000000ULL
/* MMU */
#define MMU_PRIMARY_IDX 0
#define MMU_SECONDARY_IDX 1
@ -674,6 +677,26 @@ struct sysib_322 {
#define MCIC_VB_CT 0x0000000000020000ULL
#define MCIC_VB_CC 0x0000000000010000ULL
static inline uint64_t s390_build_validity_mcic(void)
{
uint64_t mcic;
/*
* Indicate all validity bits (no damage) only. Other bits have to be
* added by the caller. (storage errors, subclasses and subclass modifiers)
*/
mcic = MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
if (s390_has_feat(S390_FEAT_VECTOR)) {
mcic |= MCIC_VB_VR;
}
if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
mcic |= MCIC_VB_GS;
}
return mcic;
}
/* cpu.c */
int s390_get_clock(uint8_t *tod_high, uint64_t *tod_low);

25
target/s390x/kvm.c
View File

@ -1852,33 +1852,12 @@ void kvm_s390_io_interrupt(uint16_t subchannel_id,
kvm_s390_floating_interrupt(&irq);
}
static uint64_t build_channel_report_mcic(void)
{
uint64_t mcic;
/* subclass: indicate channel report pending */
mcic = MCIC_SC_CP |
/* subclass modifiers: none */
/* storage errors: none */
/* validity bits: no damage */
MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
if (s390_has_feat(S390_FEAT_VECTOR)) {
mcic |= MCIC_VB_VR;
}
if (s390_has_feat(S390_FEAT_GUARDED_STORAGE)) {
mcic |= MCIC_VB_GS;
}
return mcic;
}
void kvm_s390_crw_mchk(void)
{
struct kvm_s390_irq irq = {
.type = KVM_S390_MCHK,
.u.mchk.cr14 = 1 << 28,
.u.mchk.mcic = build_channel_report_mcic(),
.u.mchk.cr14 = CR14_CHANNEL_REPORT_SC,
.u.mchk.mcic = s390_build_validity_mcic() | MCIC_SC_CP,
};
kvm_s390_floating_interrupt(&irq);
}