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charset="utf-8" Add flexcomm function selection unit tests. Signed-off-by: Octavian Purdila --- tests/qtest/flexcomm-test.c | 86 +++++++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 1 + 2 files changed, 87 insertions(+) create mode 100644 tests/qtest/flexcomm-test.c diff --git a/tests/qtest/flexcomm-test.c b/tests/qtest/flexcomm-test.c new file mode 100644 index 0000000000..2258633646 --- /dev/null +++ b/tests/qtest/flexcomm-test.c @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2024 Google LLC + * + * SPDX-License-Identifier: GPL-2.0-or-later + * + * This work is licensed under the terms of the GNU GPL, version 2 or late= r. + * See the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/main-loop.h" +#include "exec/memory.h" +#include "hw/irq.h" +#include "hw/qdev-properties.h" + +#include "hw/misc/flexcomm.h" +#include "hw/arm/svd/flexcomm.h" +#include "hw/arm/svd/rt500.h" +#include "reg-utils.h" + +#define FLEXCOMM_BASE RT500_FLEXCOMM0_BASE + +static void select_test(gconstpointer data) +{ + static const struct { + int persel; + int func; + } persel_func_map[] =3D { + { FLEXCOMM_PERSEL_USART, FLEXCOMM_FUNC_USART }, + { FLEXCOMM_PERSEL_SPI, FLEXCOMM_FUNC_SPI }, + { FLEXCOMM_PERSEL_I2C, FLEXCOMM_FUNC_I2C }, + }; + + g_assert(REG32_READ_FIELD(FLEXCOMM, PSELID, PERSEL) =3D=3D 0); + + /* no register access until a function is selected */ + readl_fail(FLEXCOMM_BASE); + writel_fail(FLEXCOMM_BASE, 0); + + for (int i =3D 0; i < ARRAY_SIZE(persel_func_map); i++) { + int persel =3D persel_func_map[i].persel; + + REG32_WRITE(FLEXCOMM, PSELID, persel); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, PERSEL), =3D= =3D, + persel); + + /* test that we can access function registers */ + writel(FLEXCOMM_BASE + 0x10, 0xabcd); + readl(FLEXCOMM_BASE + 0x10); + } + + /* try to select something invalid */ + REG32_WRITE(FLEXCOMM, PSELID, 7); + /* check for no function selected */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, PERSEL), =3D=3D, 0= ); + + /* now select and lock USART */ + REG32_WRITE(FLEXCOMM, PSELID, + FIELD_DP32(FLEXCOMM_PERSEL_USART, FLEXCOMM_PSELID, LOCK, 1= )); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, PERSEL), =3D=3D, + FLEXCOMM_PERSEL_USART); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, LOCK), =3D=3D, 1); + + /* try to change the selection to spi */ + REG32_WRITE(FLEXCOMM, PSELID, FLEXCOMM_PERSEL_SPI); + /* it should still be locked USART */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, PERSEL), =3D=3D, + FLEXCOMM_PERSEL_USART); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM, PSELID, LOCK), =3D=3D, 1); +} + +int main(int argc, char **argv) +{ + int ret; + + g_test_init(&argc, &argv, NULL); + + qtest_add_data_func("/flexcomm/select", NULL, select_test); + qtest_start("-M rt595-evk"); + ret =3D g_test_run(); + qtest_end(); + + return ret; +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 12792948ff..9631b6c401 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -229,6 +229,7 @@ qtests_arm =3D \ (config_all_devices.has_key('CONFIG_FSI_APB2OPB_ASPEED') ? ['aspeed_fsi-= test'] : []) + \ (config_all_devices.has_key('CONFIG_STM32L4X5_SOC') and config_all_devices.has_key('CONFIG_DM163')? ['dm163-test'] : []) + \ + (config_all_devices.has_key('CONFIG_FLEXCOMM')? ['flexcomm-test'] : []) = + \ ['arm-cpu-features', 'boot-serial-test'] =20 --=20 2.46.0.295.g3b9ea8a38a-goog