diff mbox series

[RFC,v3,19/24] tests/qtest: add tests for flexcomm i2c

Message ID 20240827064529.1246786-20-tavip@google.com (mailing list archive)
State New, archived
Headers show
Series NXP i.MX RT595 | expand

Commit Message

Octavian Purdila Aug. 27, 2024, 6:45 a.m. UTC 
Add master mode tests for flexcomm i2c.

Signed-off-by: Octavian Purdila <tavip@google.com>
---
 tests/qtest/flexcomm-i2c-test.c | 169 ++++++++++++++++++++++++++++++++
 tests/qtest/meson.build         |   2 +-
 2 files changed, 170 insertions(+), 1 deletion(-)
 create mode 100644 tests/qtest/flexcomm-i2c-test.c
diff mbox series

Patch

diff --git a/tests/qtest/flexcomm-i2c-test.c b/tests/qtest/flexcomm-i2c-test.c
new file mode 100644
index 0000000000..30ab40e132
--- /dev/null
+++ b/tests/qtest/flexcomm-i2c-test.c
@@ -0,0 +1,169 @@ 
+/*
+ * 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/config-file.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "qapi/error.h"
+#include "qemu/sockets.h"
+#include "sysemu/sysemu.h"
+#include "qemu/main-loop.h"
+#include "qemu/option.h"
+#include "exec/memory.h"
+#include "hw/irq.h"
+#include "hw/qdev-properties.h"
+#include "hw/qdev-core.h"
+
+#include "hw/i2c/flexcomm_i2c.h"
+#include "hw/arm/svd/rt500.h"
+#include "hw/misc/i2c_tester.h"
+#include "reg-utils.h"
+
+#define PERIPH_ADDR (0x50)
+#define INVALID_ADDR (0x10)
+
+#define REG_ADDR 11
+#define REG_VALUE 0xAA
+
+#define FLEXCOMM_BASE RT500_FLEXCOMM0_BASE
+#define FLEXCOMM_I2C_BASE RT500_FLEXCOMM0_BASE
+#define DEVICE_NAME "/machine/soc/flexcomm0"
+
+struct TestState {
+    QTestState *qtest;
+};
+
+static void master_test(gconstpointer user_data)
+{
+    struct TestState *t = (struct TestState *)user_data;
+    uint32_t tmp;
+
+    qtest_irq_intercept_out_named(t->qtest, DEVICE_NAME,
+                                  SYSBUS_DEVICE_GPIO_IRQ);
+
+    /* Select and lock I2C */
+    tmp = FLEXCOMM_PERSEL_I2C;
+    FIELD_DP32(tmp, FLEXCOMM_PSELID, LOCK, 1);
+    REG32_WRITE(FLEXCOMM, PSELID, tmp);
+
+    /* Enable master mode */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, CFG, MSTEN, 1);
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, CFG, MSTEN) == 1);
+
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTPENDING) == 1);
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_IDLE);
+
+    /* Enable interrupts */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, INTENSET, MSTPENDINGEN, 1);
+    g_assert_true(get_irq(0));
+
+    /* start for invalid address  */
+    REG32_WRITE(FLEXCOMM_I2C, MSTDAT, INVALID_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_NAKADR);
+    g_assert_true(get_irq(0));
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTOP, 1);
+
+    /* write past the last register */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, PERIPH_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, I2C_TESTER_NUM_REGS + 10);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTCONTINUE, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTCONTINUE, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_NAKDAT);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTOP, 1);
+
+    /* write value to register */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, PERIPH_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, REG_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTCONTINUE, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, REG_VALUE);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTCONTINUE, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTOP, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_IDLE);
+
+    /* read value back from register */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, PERIPH_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, REG_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTCONTINUE, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_TXRDY);
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, (PERIPH_ADDR + 1));
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+    g_assert_true(get_irq(0));
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_RXRDY);
+    g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_I2C, MSTDAT, DATA), ==,
+                     REG_VALUE);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTOP, 1);
+
+    /*
+     * Check that the master ended the transaction (i.e. i2c_end_transfer was
+     * called). If the master does not properly end the transaction this would
+     * be seen as a restart and it would not be NACKed.
+     */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, MSTDAT, DATA, INVALID_ADDR);
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTART, 1);
+
+    g_assert(REG32_READ_FIELD(FLEXCOMM_I2C, STAT, MSTSTATE) ==
+             MSTSTATE_NAKADR);
+    g_assert_true(get_irq(0));
+    REG32_WRITE_FIELD_NOUPDATE(FLEXCOMM_I2C, MSTCTL, MSTSTOP, 1);
+
+    /* Disable interrupts */
+    REG32_WRITE_FIELD(FLEXCOMM_I2C, INTENCLR, MSTPENDINGCLR, 1);
+    g_assert_false(get_irq(0));
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+    struct TestState test;
+
+    module_call_init(MODULE_INIT_QOM);
+    g_test_init(&argc, &argv, NULL);
+
+    qtest_add_data_func("/flexcomm-i2c/master", &test, master_test);
+
+    test.qtest = qtest_start("-M rt595-evk "
+                          "-device i2c-tester,address=0x50,bus=/flexcomm0/i2c");
+    ret = g_test_run();
+    qtest_end();
+
+    return ret;
+}
diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index 93d1f781bc..df69c1cfbf 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -229,7 +229,7 @@  qtests_arm = \
   (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', 'flexcomm-usart-test'] : []) + \
+  (config_all_devices.has_key('CONFIG_FLEXCOMM') ? ['flexcomm-test', 'flexcomm-usart-test', 'flexcomm-i2c-test'] : []) + \
   ['arm-cpu-features',
    'boot-serial-test']