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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::104a; envelope-from=3K3bNZgUKCoo7o9w3u22uzs.q204s08-rs9sz121u18.25u@flex--tavip.bounces.google.com; helo=mail-pj1-x104a.google.com X-Spam_score_int: -95 X-Spam_score: -9.6 X-Spam_bar: --------- X-Spam_report: (-9.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01, USER_IN_DEF_DKIM_WL=-7.5 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @google.com) X-ZM-MESSAGEID: 1724741575178116600 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add flexcomm usart polling and irq unit tests. Signed-off-by: Octavian Purdila --- tests/qtest/flexcomm-usart-test.c | 314 ++++++++++++++++++++++++++++++ tests/qtest/meson.build | 3 +- 2 files changed, 316 insertions(+), 1 deletion(-) create mode 100644 tests/qtest/flexcomm-usart-test.c diff --git a/tests/qtest/flexcomm-usart-test.c b/tests/qtest/flexcomm-usart= -test.c new file mode 100644 index 0000000000..cb6b3c24b9 --- /dev/null +++ b/tests/qtest/flexcomm-usart-test.c @@ -0,0 +1,314 @@ +/* + * 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 + +#include "io/channel-socket.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/misc/flexcomm.h" +#include "hw/arm/svd/rt500.h" +#include "reg-utils.h" + +#define FLEXCOMM_BASE RT500_FLEXCOMM0_BASE +#define FLEXCOMM_USART_BASE RT500_FLEXCOMM0_BASE +#define DEVICE_NAME "/machine/soc/flexcomm0" + +struct TestState { + QTestState *qtest; + QIOChannel *ioc; +}; + +static void polling_test(gconstpointer user_data) +{ + struct TestState *t =3D (struct TestState *)user_data; + uint32_t tmp; + char byte; + int fifo_size; + QDict *resp; + + resp =3D qmp("{\"execute\": \"system_reset\"}"); + qdict_unref(resp); + + /* select and lock USART */ + tmp =3D FIELD_DP32(FLEXCOMM_PERSEL_USART, FLEXCOMM_PSELID, LOCK, 1); + REG32_WRITE(FLEXCOMM, PSELID, tmp); + + fifo_size =3D REG32_READ_FIELD(FLEXCOMM_USART, FIFOSIZE, FIFOSIZE); + + /* enable USART */ + REG32_WRITE_FIELD(FLEXCOMM_USART, CFG, ENABLE, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, CFG, ENABLE), =3D=3D= , 1); + + /* enable TX and RX FIFO */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLETX, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLETX), + =3D=3D, 1); + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLERX, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLERX), + =3D=3D, 1); + + /* test writes and fifo counters wrap */ + for (int i =3D 0; i < fifo_size / 2; i++) { + /* check fifostat */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXFULL= ), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXNOTE= MPTY), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXNOTF= ULL), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXEMPT= Y), + =3D=3D, 1); + + REG32_WRITE(FLEXCOMM_USART, FIFOWR, 'a' + i); + qio_channel_read(t->ioc, &byte, 1, &error_abort); + g_assert_cmpuint(byte, =3D=3D, 'a' + i); + } + + /* test reads and fifo level */ + + for (int i =3D 0; i < fifo_size / 2; i++) { + byte =3D 'A' + i; + g_assert_cmpuint(qio_channel_write(t->ioc, &byte, 1, &error_abort), + =3D=3D, 1); + } + + /* wait for the RXLVL to update */ + WAIT_REG32_FIELD(1000, FLEXCOMM_USART, FIFOSTAT, RXLVL, + fifo_size / 2); + + /* check fifo stat */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXFULL), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXNOTEMPTY= ), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXNOTFULL), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXEMPTY), + =3D=3D, 1); + + /* send until FIFO is full */ + for (int i =3D fifo_size / 2; i < fifo_size; i++) { + byte =3D 'A' + i; + g_assert_cmpuint(qio_channel_write(t->ioc, &byte, 1, &error_abort), + =3D=3D, 1); + } + + /* wait for the RXLVL to update */ + WAIT_REG32_FIELD(1000, FLEXCOMM_USART, FIFOSTAT, RXLVL, fifo_size); + + /* check fifo stat */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXFULL), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXNOTEMPTY= ), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXNOTFULL), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXEMPTY), + =3D=3D, 1); + + /* check read no pop */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFORDNOPOP, RXDATA), + =3D=3D, 'A'); + + /* now read from the fifo */ + for (int i =3D 0; i < fifo_size; i++) { + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFORD, RXDATA), + =3D=3D, 'A' + i); + } + + /* check fifostat */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXFULL), = =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXNOTEMPTY= ), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXNOTFULL), + =3D=3D, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, TXEMPTY), + =3D=3D, 1); +} + +static void irq_test(gconstpointer user_data) +{ + struct TestState *t =3D (struct TestState *)user_data; + char buf[256] =3D { 0, }; + uint32_t tmp; + QDict *resp; + + resp =3D qmp("{\"execute\": \"system_reset\"}"); + qdict_unref(resp); + + qtest_irq_intercept_out_named(t->qtest, DEVICE_NAME, + SYSBUS_DEVICE_GPIO_IRQ); + + /* select and lock FLEXCOMM_USART */ + tmp =3D FIELD_DP32(FLEXCOMM_PERSEL_USART, FLEXCOMM_PSELID, LOCK, 1); + REG32_WRITE(FLEXCOMM, PSELID, tmp); + + /* + * set RX IRQ/DMA trigger level to 4 bytes - value 3 in FIFOTRIG + * + * 0000 - Trigger when the RX FIFO has received 1 entry (is no longer = empty) + * 0001 - Trigger when the RX FIFO has received 2 entries + * 1111 - Trigger when the RX FIFO has received 16 entries (has become= full) + */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOTRIG, RXLVL, 3); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOTRIG, RXLVL), + =3D=3D, 3); + + /* enable RX trigger for IRQ/DMA */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOTRIG, RXLVLENA, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOTRIG, RXLVLENA), + =3D=3D, 1); + + /* enable RXLVL interrupt */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOINTENSET, RXLVL, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTENSET, RXLVL), + =3D=3D, 1); + + /* enable FLEXCOMM_USART */ + REG32_WRITE_FIELD(FLEXCOMM_USART, CFG, ENABLE, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, CFG, ENABLE), + =3D=3D, 1); + + /* enable TX and RX FIFO */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLETX, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLETX), + =3D=3D, 1); + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLERX, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOCFG, ENABLERX), + =3D=3D, 1); + + /* check interrupt status */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, RXLVL), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, TXLVL), + =3D=3D, 0); + g_assert_false(get_irq(0)); + + /* enable TX trigger for IRQ/DMA */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOTRIG, TXLVLENA, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOTRIG, TXLVLENA), + =3D=3D, 1); + + /* enable irq for TX */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOINTENSET, TXLVL, 1); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTENSET, TXLVL), + =3D=3D, 1); + + /* check TX irq */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, TXLVL), + =3D=3D, 1); + g_assert_true(get_irq(0)); + + /* disable irq for TX */ + REG32_WRITE_FIELD(FLEXCOMM_USART, FIFOTRIG, TXLVLENA, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOTRIG, TXLVLENA), + =3D=3D, 0); + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, TXLVL), + =3D=3D, 0); + g_assert_false(get_irq(0)); + + /* send 3 bytes */ + g_assert_cmpuint(qio_channel_write(t->ioc, buf, 3, &error_abort), + =3D=3D, 3); + + /* check that we have 3 bytes in the fifo */ + WAIT_REG32_FIELD(1000, FLEXCOMM_USART, FIFOSTAT, RXLVL, 3); + + /* and no interrupt has been triggered yet */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, RXLVL), + =3D=3D, 0); + g_assert_false(get_irq(0)); + + /* push it over the edge */ + g_assert_cmpuint(qio_channel_write(t->ioc, buf, 1, &error_abort), =3D= =3D, 1); + + /* check that we have 4 bytes in the fifo */ + WAIT_REG32_FIELD(1000, FLEXCOMM_USART, FIFOSTAT, RXLVL, 4); + + /* and the interrupt has been triggered */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, RXLVL), + =3D=3D, 1); + g_assert_true(get_irq(0)); + + /* read one byte from the fifo */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFORD, RXDATA), + =3D=3D, 0); + + /* we should have 3 bytes in the FIFO */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOSTAT, RXLVL), + =3D=3D, 3); + + /* and no interrupts active */ + g_assert_cmpuint(REG32_READ_FIELD(FLEXCOMM_USART, FIFOINTSTAT, RXLVL), + =3D=3D, 0); + g_assert_false(get_irq(0)); +} + +static void close_ioc(void *ioc) +{ + qio_channel_close(ioc, NULL); +} + +int main(int argc, char **argv) +{ + int ret; + struct TestState test; + char *tmp_path =3D g_dir_make_tmp("qemu-flexcomm-usart-test.XXXXXX", N= ULL); + SocketAddress addr =3D { + .type =3D SOCKET_ADDRESS_TYPE_UNIX, + .u.q_unix.path =3D g_build_filename(tmp_path, "sock", NULL), + }; + char *args; + QIOChannelSocket *lioc; + + module_call_init(MODULE_INIT_QOM); + g_test_init(&argc, &argv, NULL); + + lioc =3D qio_channel_socket_new(); + qio_channel_socket_listen_sync(lioc, &addr, 1, &error_abort); + + qtest_add_data_func("/flexcomm-usart/polling", &test, polling_test); + qtest_add_data_func("/flexcomm-usart/irq", &test, irq_test); + + args =3D g_strdup_printf("-M rt595-evk -chardev socket,id=3Dflexcomm0,= path=3D%s", + addr.u.q_unix.path); + test.qtest =3D qtest_start(args); + + qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN); + test.ioc =3D QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort)= ); + g_assert(test.ioc); + qtest_add_abrt_handler(close_ioc, test.ioc); + + ret =3D g_test_run(); + + qtest_end(); + + qtest_remove_abrt_handler(test.ioc); + g_unlink(addr.u.q_unix.path); + g_free(addr.u.q_unix.path); + g_rmdir(tmp_path); + g_free(tmp_path); + g_free(args); + object_unref(OBJECT(test.ioc)); + object_unref(OBJECT(lioc)); + + return ret; +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 9631b6c401..93d1f781bc 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -229,7 +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'] : []) = + \ + (config_all_devices.has_key('CONFIG_FLEXCOMM') ? ['flexcomm-test', 'flex= comm-usart-test'] : []) + \ ['arm-cpu-features', 'boot-serial-test'] =20 @@ -344,6 +344,7 @@ qtests =3D { 'virtio-net-failover': files('migration-helpers.c'), 'vmgenid-test': files('boot-sector.c', 'acpi-utils.c'), 'netdev-socket': files('netdev-socket.c', '../unit/socket-helpers.c'), + 'flexcomm-usart-test': [io], } =20 if vnc.found() --=20 2.46.0.295.g3b9ea8a38a-goog