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Signed-off-by: Octavian Purdila --- tests/unit/meson.build | 7 + tests/unit/test-rt500-clkctl.c | 270 +++++++++++++++++++++++++++++++++ 2 files changed, 277 insertions(+) create mode 100644 tests/unit/test-rt500-clkctl.c diff --git a/tests/unit/meson.build b/tests/unit/meson.build index 7a28e7b521..be3062acbf 100644 --- a/tests/unit/meson.build +++ b/tests/unit/meson.build @@ -188,6 +188,13 @@ if have_system meson.project_source_root() / 'hw/ssi/ssi.c', 'spi_tester.c', ], + 'test-rt500-clkctl': [ + hwcore, + meson.project_source_root() / 'hw/core/gpio.c', + meson.project_source_root() / 'hw/misc/rt500_clkctl0.c', + meson.project_source_root() / 'hw/misc/rt500_clkctl1.c', + meson.project_source_root() / 'tests/unit/sysbus-mock.c', + ], } if config_host_data.get('CONFIG_INOTIFY1') tests += {'test-util-filemonitor': []} diff --git a/tests/unit/test-rt500-clkctl.c b/tests/unit/test-rt500-clkctl.c new file mode 100644 index 0000000000..9312091c46 --- /dev/null +++ b/tests/unit/test-rt500-clkctl.c @@ -0,0 +1,270 @@ +/* + * 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 later. + * 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/clock.h" +#include "hw/irq.h" +#include "hw/qdev-clock.h" +#include "hw/qdev-properties.h" + +#include "hw/misc/rt500_clkctl0.h" +#include "hw/misc/rt500_clkctl1.h" +#include "hw/misc/rt500_clk_freqs.h" +#include "sysbus-mock.h" +#include "reg-utils.h" + +typedef struct { + DeviceState *clk0; + DeviceState *clk1; + Clock *sysclk; + Clock *systick_clk; + Clock *ostimer_clk; +} TestFixture; + +#define SYSCLK_HZ 100000000 + +#define RT500_CLKCTL0_BASE 0x40001000UL +#define RT500_CLKCTL1_BASE 0x40021000UL + +/* + * Test fixture initialization. + */ +static void set_up(TestFixture *f, gconstpointer data) +{ + f->clk0 = qdev_new(TYPE_RT500_CLKCTL0); + g_assert(f->clk0); + + f->clk1 = qdev_new(TYPE_RT500_CLKCTL1); + g_assert(f->clk1); + + f->sysclk = clock_new(OBJECT(&f->clk0->parent_obj), "SYSCLK"); + clock_set_hz(f->sysclk, SYSCLK_HZ); + + qdev_connect_clock_in(f->clk0, "sysclk", f->sysclk); + f->systick_clk = RT500_CLKCTL0(f->clk0)->systick_clk; + + qdev_connect_clock_in(f->clk1, "sysclk", f->sysclk); + f->ostimer_clk = RT500_CLKCTL1(f->clk1)->ostimer_clk; + + qdev_realize_and_unref(f->clk0, NULL, NULL); + sysbus_mmio_map(SYS_BUS_DEVICE(f->clk0), 0, RT500_CLKCTL0_BASE); + + qdev_realize_and_unref(f->clk1, NULL, NULL); + sysbus_mmio_map(SYS_BUS_DEVICE(f->clk1), 0, RT500_CLKCTL1_BASE); + + device_cold_reset(f->clk0); + device_cold_reset(f->clk1); +} + +static void tear_down(TestFixture *f, gconstpointer user_data) +{ + qdev_unrealize(f->clk0); + qdev_unrealize(f->clk1); + g_free(f->clk0); + g_free(f->clk1); +} + +#undef CLKCTL0 +#undef CLKCTL1 + +static void pscctl_test(TestFixture *f, gconstpointer user_data) +{ + /* rom controller clock should be enabled at reset */ + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, PSCCTL0, ROM_CTRLR_CLK) + == 1); + + /* DSP clk is disabled at reset */ + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 0); + + /* check PSCTL_SET functionality */ + REG32_WRITE(f->clk0, RT500_CLKCTL0, PSCCTL0_SET, + RT500_CLKCTL0_PSCCTL0_DSP_CLK_Msk); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 1); + + /* check PSCTL_CLR functionality */ + REG32_WRITE(f->clk0, RT500_CLKCTL0, PSCCTL0_CLR, + RT500_CLKCTL0_PSCCTL0_DSP_CLK_Msk); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, PSCCTL0, DSP_CLK) == 0); + + /* FLEXIO clk is disabled at reset */ + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, PSCCTL0, FlexIO) == 0); + + /* check PSCTL_SET functionality */ + REG32_WRITE(f->clk1, RT500_CLKCTL1, PSCCTL0_SET, + RT500_CLKCTL1_PSCCTL0_FlexIO_Msk); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, PSCCTL0, FlexIO) == 1); + + /* check PSCTL_CLR functionality */ + REG32_WRITE(f->clk1, RT500_CLKCTL1, PSCCTL0_CLR, + RT500_CLKCTL1_PSCCTL0_FlexIO_Msk); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, PSCCTL0, FlexIO) == 0); +} + +static void audiopll0pfd_test(TestFixture *f, gconstpointer user_data) +{ + /* audio plls are gated at boot */ + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, + PFD3_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, + PFD2_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, + PFD1_CLKGATE) == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, + PFD0_CLKGATE) == 1); + + /* ,,, and clocks are not ready */ + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKRDY) + == 0); + + /* ungate all plls and check that clocks are ready */ + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKGATE, 0); + + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD3_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD2_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD1_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk1, RT500_CLKCTL1, AUDIOPLL0PFD, PFD0_CLKRDY) + == 1); +} + +static void syspll0pfd_test(TestFixture *f, gconstpointer user_data) +{ + /* system plls are gated at boot */ + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKGATE) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKGATE) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKGATE) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKGATE) + == 1); + + /* ,,, and clocks are not ready */ + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKRDY) + == 0); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKRDY) + == 0); + + /* ungate all plls and check that clocks are ready */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKGATE, 0); + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKGATE, 0); + + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD3_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD2_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD1_CLKRDY) + == 1); + g_assert(REG32_READ_FIELD(f->clk0, RT500_CLKCTL0, SYSPLL0PFD, PFD0_CLKRDY) + == 1); +} + +static void systick_clk_test(TestFixture *f, gconstpointer user_data) +{ + /* systick is not running at reset */ + g_assert(clock_get_hz(f->systick_clk) == 0); + + /* select divout no divisor */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_DIVOUT); + g_assert(clock_get_hz(f->systick_clk) == SYSCLK_HZ); + + /* change divisor to 2 */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSTICKFCLKDIV, DIV, 1); + g_assert(clock_get_hz(f->systick_clk) == SYSCLK_HZ / 2); + + /* select lpsoc */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_LPOSC); + g_assert(clock_get_hz(f->systick_clk) == LPOSC_CLK_HZ); + + /* select lpsoc */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_32KHZRTC); + g_assert(clock_get_hz(f->systick_clk) == RTC32KHZ_CLK_HZ); + + /* disable clock */ + REG32_WRITE_FIELD(f->clk0, RT500_CLKCTL0, SYSTICKFCLKSEL, SEL, + SYSTICKFCLKSEL_NONE); + g_assert(clock_get_hz(f->systick_clk) == 0); +} + +static void ostimer_clk_test(TestFixture *f, gconstpointer user_data) +{ + /* systick is not running at reset */ + g_assert(clock_get_hz(f->ostimer_clk) == 0); + + /* select lpsoc */ + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_LPOSC); + g_assert(clock_get_hz(f->ostimer_clk) == LPOSC_CLK_HZ); + + + /* select 32khz RTC */ + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_32KHZRTC); + g_assert(clock_get_hz(f->ostimer_clk) == RTC32KHZ_CLK_HZ); + + /* select hclk */ + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_HCLK); + g_assert(clock_get_hz(f->ostimer_clk) == SYSCLK_HZ); + + /* disable clock */ + REG32_WRITE_FIELD(f->clk1, RT500_CLKCTL1, OSEVENTTFCLKSEL, SEL, + OSEVENTTFCLKSEL_NONE); + g_assert(clock_get_hz(f->ostimer_clk) == 0); +} + +int main(int argc, char **argv) +{ + g_test_init(&argc, &argv, NULL); + + /* Initialize object types. */ + sysbus_mock_init(); + module_call_init(MODULE_INIT_QOM); + + g_test_add("/rt500-clkctl/pscctl-test", TestFixture, NULL, + set_up, pscctl_test, tear_down); + + g_test_add("/rt500-clkctl/syspll0pfd-test", TestFixture, NULL, + set_up, syspll0pfd_test, tear_down); + + g_test_add("/rt500-clkctl/audiopll0pfd-test", TestFixture, NULL, + set_up, audiopll0pfd_test, tear_down); + + g_test_add("/rt500-clkctl/systick-test", TestFixture, NULL, + set_up, systick_clk_test, tear_down); + + g_test_add("/rt500-clkctl/ostimer-clk-test", TestFixture, NULL, + set_up, ostimer_clk_test, tear_down); + + return g_test_run(); +} -- 2.46.0.rc2.264.g509ed76dc8-goog