Added demo for reading CSR register from qtest environment.

Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
---
 tests/qtest/meson.build      |  2 ++
 tests/qtest/riscv-csr-test.c | 68 ++++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+)
 create mode 100644 tests/qtest/riscv-csr-test.c

diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index 12792948ff..45d651da99 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -259,6 +259,8 @@ qtests_s390x = \
 qtests_riscv32 = \
   (config_all_devices.has_key('CONFIG_SIFIVE_E_AON') ? ['sifive-e-aon-watchdog-test'] : [])
 
+qtests_riscv32 += ['riscv-csr-test']
+
 qos_test_ss = ss.source_set()
 qos_test_ss.add(
   'ac97-test.c',
diff --git a/tests/qtest/riscv-csr-test.c b/tests/qtest/riscv-csr-test.c
new file mode 100644
index 0000000000..715d5fe4b7
--- /dev/null
+++ b/tests/qtest/riscv-csr-test.c
@@ -0,0 +1,68 @@
+/*
+ * QTest testcase for RISC-V CSRs
+ *
+ * Copyright (c) 2024 Syntacore.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest-single.h"
+#include "qemu/error-report.h"
+
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qjson.h"
+#include "qapi/qmp/qlist.h"
+#include "qapi/qmp/qstring.h"
+#include "qapi/qmp/qobject.h"
+#include "qapi/qobject-input-visitor.h"
+#include "qapi/qobject-output-visitor.h"
+#include "qom/object_interfaces.h"
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+#include "hw/qdev-properties.h"
+
+#include "qemu/osdep.h"
+#include "qemu/cutils.h"
+#include "libqtest.h"
+
+#include "libqos/csr.h"
+#include "libqos/libqos.h"
+
+static void run_test_csr(void)
+{
+
+    uint64_t res;
+    uint64_t val = 0;
+
+    res = qcsr_get_csr(global_qtest, 0, 0xf11, &val);
+
+    g_assert_cmpint(res, ==, 0);
+    g_assert_cmpint(val, ==, 0x100);
+}
+
+int main(int argc, char **argv)
+{
+    g_test_init(&argc, &argv, NULL);
+
+    qtest_add_func("/cpu/csr", run_test_csr);
+
+    qtest_start("--nographic -machine virt -cpu any,mvendorid=0x100");
+
+    g_test_run();
+
+    qtest_quit(global_qtest);
+
+    return 0;
+
+}
-- 
2.34.1

On 13/06/2024 11.56, Ivan Klokov wrote:
> Added demo for reading CSR register from qtest environment.
> 
> Signed-off-by: Ivan Klokov <ivan.klokov@syntacore.com>
> ---
>   tests/qtest/meson.build      |  2 ++
>   tests/qtest/riscv-csr-test.c | 68 ++++++++++++++++++++++++++++++++++++
>   2 files changed, 70 insertions(+)
>   create mode 100644 tests/qtest/riscv-csr-test.c
> 
> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
> index 12792948ff..45d651da99 100644
> --- a/tests/qtest/meson.build
> +++ b/tests/qtest/meson.build
> @@ -259,6 +259,8 @@ qtests_s390x = \
>   qtests_riscv32 = \
>     (config_all_devices.has_key('CONFIG_SIFIVE_E_AON') ? ['sifive-e-aon-watchdog-test'] : [])
>   
> +qtests_riscv32 += ['riscv-csr-test']
> +
>   qos_test_ss = ss.source_set()
>   qos_test_ss.add(
>     'ac97-test.c',
> diff --git a/tests/qtest/riscv-csr-test.c b/tests/qtest/riscv-csr-test.c
> new file mode 100644
> index 0000000000..715d5fe4b7
> --- /dev/null
> +++ b/tests/qtest/riscv-csr-test.c
> @@ -0,0 +1,68 @@
> +/*
> + * QTest testcase for RISC-V CSRs
> + *
> + * Copyright (c) 2024 Syntacore.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License as published by the
> + * Free Software Foundation; either version 2 of the License, or
> + * (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful, but WITHOUT
> + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
> + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
> + * for more details.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "libqtest-single.h"
> +#include "qemu/error-report.h"
> +
> +#include "qapi/qmp/qdict.h"
> +#include "qapi/qmp/qjson.h"
> +#include "qapi/qmp/qlist.h"
> +#include "qapi/qmp/qstring.h"
> +#include "qapi/qmp/qobject.h"
> +#include "qapi/qobject-input-visitor.h"
> +#include "qapi/qobject-output-visitor.h"
> +#include "qom/object_interfaces.h"

Do you really need all these headers for the short code below? Please double 
check and trim the list.

> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "qemu/error-report.h"
> +#include "hw/qdev-properties.h"
> +
> +#include "qemu/osdep.h"

Duplicate include statement, please remove.

> +#include "qemu/cutils.h"
> +#include "libqtest.h"
> +
> +#include "libqos/csr.h"
> +#include "libqos/libqos.h"
> +
> +static void run_test_csr(void)
> +{
> +
> +    uint64_t res;
> +    uint64_t val = 0;
> +
> +    res = qcsr_get_csr(global_qtest, 0, 0xf11, &val);
> +
> +    g_assert_cmpint(res, ==, 0);
> +    g_assert_cmpint(val, ==, 0x100);
> +}
> +
> +int main(int argc, char **argv)
> +{
> +    g_test_init(&argc, &argv, NULL);
> +
> +    qtest_add_func("/cpu/csr", run_test_csr);
> +
> +    qtest_start("--nographic -machine virt -cpu any,mvendorid=0x100");

You don't need --nographic, it's been taken care off by the libqtest 
framework already.

> +    g_test_run();
> +
> +    qtest_quit(global_qtest);
> +
> +    return 0;

You should return the result of g_test_run() here, otherwise your test will 
look like it always succeeds.

> +}

  Thomas