linux-kernel - [RFC kvm-unit-tests 12/27] arm: realm: Add RSI version test

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Date:   Fri, 27 Jan 2023 11:40:53 +0000
From:   Joey Gouly <joey.gouly@....com>
To:     Andrew Jones <andrew.jones@...ux.dev>, <kvmarm@...ts.linux.dev>,
        <kvm@...r.kernel.org>
CC:     <joey.gouly@....com>, Alexandru Elisei <alexandru.elisei@....com>,
        Christoffer Dall <christoffer.dall@....com>,
        Fuad Tabba <tabba@...gle.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Joey Gouly <Joey.Gouly@....com>, Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Quentin Perret <qperret@...gle.com>,
        Steven Price <steven.price@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        "Thomas Huth" <thuth@...hat.com>, Will Deacon <will@...nel.org>,
        Zenghui Yu <yuzenghui@...wei.com>,
        <linux-coco@...ts.linux.dev>, <kvmarm@...ts.cs.columbia.edu>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [RFC kvm-unit-tests 12/27] arm: realm: Add RSI version test

Add basic test for checking the RSI version command.

Signed-off-by: Joey Gouly <joey.gouly@....com>
---
 arm/Makefile.arm64 |  1 +
 arm/realm-rsi.c    | 49 ++++++++++++++++++++++++++++++++++++++++++++++
 arm/unittests.cfg  |  7 +++++++
 3 files changed, 57 insertions(+)
 create mode 100644 arm/realm-rsi.c

diff --git a/arm/Makefile.arm64 b/arm/Makefile.arm64
index ab557f84..eed77d3a 100644
--- a/arm/Makefile.arm64
+++ b/arm/Makefile.arm64
@@ -33,6 +33,7 @@ tests = $(TEST_DIR)/timer.flat
 tests += $(TEST_DIR)/micro-bench.flat
 tests += $(TEST_DIR)/cache.flat
 tests += $(TEST_DIR)/debug.flat
+tests += $(TEST_DIR)/realm-rsi.flat
 
 include $(SRCDIR)/$(TEST_DIR)/Makefile.common
 
diff --git a/arm/realm-rsi.c b/arm/realm-rsi.c
new file mode 100644
index 00000000..d793f305
--- /dev/null
+++ b/arm/realm-rsi.c
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 Arm Limited.
+ * All rights reserved.
+ */
+
+#include <libcflat.h>
+#include <asm/io.h>
+#include <asm/page.h>
+#include <asm/processor.h>
+#include <asm/psci.h>
+#include <alloc_page.h>
+#include <asm/rsi.h>
+#include <asm/pgtable.h>
+#include <asm/processor.h>
+
+static void rsi_test_version(void)
+{
+	int version;
+
+	report_prefix_push("version");
+
+	version = rsi_get_version();
+	if (version < 0) {
+		report(false, "SMC_RSI_ABI_VERSION failed (%d)", version);
+		return;
+	}
+
+	report(version == RSI_ABI_VERSION, "RSI ABI version %u.%u (expected: %u.%u)",
+	       RSI_ABI_VERSION_GET_MAJOR(version),
+	       RSI_ABI_VERSION_GET_MINOR(version),
+	       RSI_ABI_VERSION_GET_MAJOR(RSI_ABI_VERSION),
+	       RSI_ABI_VERSION_GET_MINOR(RSI_ABI_VERSION));
+	report_prefix_pop();
+}
+
+int main(int argc, char **argv)
+{
+	report_prefix_push("rsi");
+
+	if (!is_realm()) {
+		report_skip("Not a realm, skipping tests");
+		goto exit;
+	}
+
+	rsi_test_version();
+exit:
+	return report_summary();
+}
diff --git a/arm/unittests.cfg b/arm/unittests.cfg
index 5e67b558..ce1b5ad9 100644
--- a/arm/unittests.cfg
+++ b/arm/unittests.cfg
@@ -275,3 +275,10 @@ file = debug.flat
 arch = arm64
 extra_params = -append 'ss-migration'
 groups = debug migration
+
+# Realm RSI ABI test
+[realm-rsi]
+file = realm-rsi.flat
+groups = nodefault realms
+accel = kvm
+arch = arm64
-- 
2.17.1