From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Eric Auger <eric.auger@redhat.com>,
kvm@vger.kernel.org, Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH v3 17/19] KVM: selftests: Add helper for enabling LPIs on a redistributor
Date: Mon, 22 Apr 2024 20:01:56 +0000 [thread overview]
Message-ID: <20240422200158.2606761-18-oliver.upton@linux.dev> (raw)
In-Reply-To: <20240422200158.2606761-1-oliver.upton@linux.dev>
The selftests GIC library presently does not support LPIs. Add a
userspace helper for configuring a redistributor for LPIs, installing
an LPI configuration table and LPI pending table.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
.../selftests/kvm/include/aarch64/gic.h | 3 +++
.../selftests/kvm/lib/aarch64/gic_v3.c | 24 +++++++++++++++++++
.../testing/selftests/kvm/lib/aarch64/vgic.c | 2 ++
3 files changed, 29 insertions(+)
diff --git a/tools/testing/selftests/kvm/include/aarch64/gic.h b/tools/testing/selftests/kvm/include/aarch64/gic.h
index 6d03188435e4..baeb3c859389 100644
--- a/tools/testing/selftests/kvm/include/aarch64/gic.h
+++ b/tools/testing/selftests/kvm/include/aarch64/gic.h
@@ -58,4 +58,7 @@ 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_rdist_enable_lpis(vm_paddr_t cfg_table, size_t cfg_table_size,
+ vm_paddr_t pend_table);
+
#endif /* SELFTEST_KVM_GIC_H */
diff --git a/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c b/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
index 515335179045..66d05506f78b 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/gic_v3.c
@@ -401,3 +401,27 @@ const struct gic_common_ops gicv3_ops = {
.gic_irq_get_pending = gicv3_irq_get_pending,
.gic_irq_set_config = gicv3_irq_set_config,
};
+
+void gic_rdist_enable_lpis(vm_paddr_t cfg_table, size_t cfg_table_size,
+ vm_paddr_t pend_table)
+{
+ volatile void *rdist_base = gicr_base_cpu(guest_get_vcpuid());
+
+ u32 ctlr;
+ u64 val;
+
+ val = (cfg_table |
+ GICR_PROPBASER_InnerShareable |
+ GICR_PROPBASER_RaWaWb |
+ ((ilog2(cfg_table_size) - 1) & GICR_PROPBASER_IDBITS_MASK));
+ writeq_relaxed(val, rdist_base + GICR_PROPBASER);
+
+ val = (pend_table |
+ GICR_PENDBASER_InnerShareable |
+ GICR_PENDBASER_RaWaWb);
+ writeq_relaxed(val, rdist_base + GICR_PENDBASER);
+
+ ctlr = readl_relaxed(rdist_base + GICR_CTLR);
+ ctlr |= GICR_CTLR_ENABLE_LPIS;
+ writel_relaxed(ctlr, rdist_base + GICR_CTLR);
+}
diff --git a/tools/testing/selftests/kvm/lib/aarch64/vgic.c b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
index 5e8f0d5382c2..4427f43f73ea 100644
--- a/tools/testing/selftests/kvm/lib/aarch64/vgic.c
+++ b/tools/testing/selftests/kvm/lib/aarch64/vgic.c
@@ -3,8 +3,10 @@
* ARM Generic Interrupt Controller (GIC) v3 host support
*/
+#include <linux/kernel.h>
#include <linux/kvm.h>
#include <linux/sizes.h>
+#include <asm/cputype.h>
#include <asm/kvm_para.h>
#include <asm/kvm.h>
--
2.44.0.769.g3c40516874-goog
next prev parent reply other threads:[~2024-04-22 20:02 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-22 20:01 [PATCH v3 00/19] KVM: arm64: Transition to a per-ITS translation cache Oliver Upton
2024-04-22 20:01 ` [PATCH v3 01/19] KVM: Treat the device list as an rculist Oliver Upton
2024-04-23 0:15 ` Sean Christopherson
2024-04-22 20:01 ` [PATCH v3 02/19] KVM: arm64: vgic-its: Walk LPI xarray in its_sync_lpi_pending_table() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 03/19] KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_invall() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 04/19] KVM: arm64: vgic-its: Walk LPI xarray in vgic_its_cmd_handle_movall() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 05/19] KVM: arm64: vgic-debug: Use an xarray mark for debug iterator Oliver Upton
2024-04-22 20:01 ` [PATCH v3 06/19] KVM: arm64: vgic-its: Get rid of vgic_copy_lpi_list() Oliver Upton
2024-04-22 20:01 ` [PATCH v3 07/19] KVM: arm64: vgic-its: Scope translation cache invalidations to an ITS Oliver Upton
2024-04-22 20:01 ` [PATCH v3 08/19] KVM: arm64: vgic-its: Maintain a translation cache per ITS Oliver Upton
2024-04-22 20:01 ` [PATCH v3 09/19] KVM: arm64: vgic-its: Spin off helper for finding ITS by doorbell addr Oliver Upton
2024-04-22 20:01 ` [PATCH v3 10/19] KVM: arm64: vgic-its: Use the per-ITS translation cache for injection Oliver Upton
2024-04-22 20:01 ` [PATCH v3 11/19] KVM: arm64: vgic-its: Rip out the global translation cache Oliver Upton
2024-04-22 20:01 ` [PATCH v3 12/19] KVM: arm64: vgic-its: Get rid of the lpi_list_lock Oliver Upton
2024-04-22 20:01 ` [PATCH v3 13/19] KVM: selftests: Align with kernel's GIC definitions Oliver Upton
2024-04-22 20:01 ` [PATCH v3 14/19] KVM: selftests: Standardise layout of GIC frames Oliver Upton
2024-04-22 20:01 ` [PATCH v3 15/19] KVM: selftests: Add quadword MMIO accessors Oliver Upton
2024-04-22 20:01 ` [PATCH v3 16/19] KVM: selftests: Add a minimal library for interacting with an ITS Oliver Upton
2024-04-22 20:01 ` Oliver Upton [this message]
2024-04-22 20:01 ` [PATCH v3 18/19] KVM: selftests: Use MPIDR_HWID_BITMASK from cputype.h Oliver Upton
2024-04-22 20:01 ` [PATCH v3 19/19] KVM: selftests: Add stress test for LPI injection Oliver Upton
2024-04-25 12:33 ` [PATCH v3 00/19] KVM: arm64: Transition to a per-ITS translation cache Marc Zyngier
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