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KVM: arm64: selftests: gic_v3: Add irq group setting helper

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Being able to set the group of an interrupt is pretty useful.
Add such a helper.

Tested-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://msgid.link/20251120172540.2267180-41-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
This commit is contained in:
Marc Zyngier
2025-11-20 17:25:30 +00:00
committed by Oliver Upton
parent 07bb1c5622
commit a1650de7c1
4 changed files with 23 additions and 0 deletions
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1
tools/testing/selftests/kvm/include/arm64/gic.h
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@@ -57,6 +57,7 @@ void gic_irq_set_pending(unsigned int intid);
void gic_irq_clear_pending(unsigned int intid);
bool gic_irq_get_pending(unsigned int intid);
void gic_irq_set_config(unsigned int intid, bool is_edge);
void gic_irq_set_group(unsigned int intid, bool group);
void gic_rdist_enable_lpis(vm_paddr_t cfg_table, size_t cfg_table_size,
vm_paddr_t pend_table);

6
tools/testing/selftests/kvm/lib/arm64/gic.c
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@@ -155,3 +155,9 @@ void gic_irq_set_config(unsigned int intid, bool is_edge)
GUEST_ASSERT(gic_common_ops);
gic_common_ops->gic_irq_set_config(intid, is_edge);
}
void gic_irq_set_group(unsigned int intid, bool group)
{
GUEST_ASSERT(gic_common_ops);
gic_common_ops->gic_irq_set_group(intid, group);
}

1
tools/testing/selftests/kvm/lib/arm64/gic_private.h
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@@ -25,6 +25,7 @@ struct gic_common_ops {
void (*gic_irq_clear_pending)(uint32_t intid);
bool (*gic_irq_get_pending)(uint32_t intid);
void (*gic_irq_set_config)(uint32_t intid, bool is_edge);
void (*gic_irq_set_group)(uint32_t intid, bool group);
};
extern const struct gic_common_ops gicv3_ops;

15
tools/testing/selftests/kvm/lib/arm64/gic_v3.c
View File

@@ -293,6 +293,20 @@ static void gicv3_enable_redist(volatile void *redist_base)
}
}
static void gicv3_set_group(uint32_t intid, bool grp)
{
uint32_t cpu_or_dist;
uint32_t val;
cpu_or_dist = (get_intid_range(intid) == SPI_RANGE) ? DIST_BIT : guest_get_vcpuid();
val = gicv3_reg_readl(cpu_or_dist, GICD_IGROUPR + (intid / 32) * 4);
if (grp)
val |= BIT(intid % 32);
else
val &= ~BIT(intid % 32);
gicv3_reg_writel(cpu_or_dist, GICD_IGROUPR + (intid / 32) * 4, val);
}
static void gicv3_cpu_init(unsigned int cpu)
{
volatile void *sgi_base;
@@ -400,6 +414,7 @@ const struct gic_common_ops gicv3_ops = {
.gic_irq_clear_pending = gicv3_irq_clear_pending,
.gic_irq_get_pending = gicv3_irq_get_pending,
.gic_irq_set_config = gicv3_irq_set_config,
.gic_irq_set_group = gicv3_set_group,
};
void gic_rdist_enable_lpis(vm_paddr_t cfg_table, size_t cfg_table_size,