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Mon, 19 Feb 2024 11:56:48 -0800 (PST) From: Rayhan Faizel To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, philmd@linaro.org, pbonzini@redhat.com, qemu-arm@nongnu.org, Rayhan Faizel , Thomas Huth , Laurent Vivier Subject: [PATCH 3/3] tests/qtest: Add testcase for BCM2835 BSC Date: Mon, 19 Feb 2024 22:51:33 +0300 Message-Id: <20240219195133.2304668-4-rayhan.faizel@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240219195133.2304668-1-rayhan.faizel@gmail.com> References: <20240219195133.2304668-1-rayhan.faizel@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::633; envelope-from=rayhan.faizel@gmail.com; helo=mail-ej1-x633.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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 @gmail.com) X-ZM-MESSAGEID: 1708372649169100001 Content-Type: text/plain; charset="utf-8" Simple testcase for validating proper operation of read and write for all three BSC controllers. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/481 Signed-off-by: Rayhan Faizel --- tests/qtest/bcm2835-i2c-test.c | 105 +++++++++++++++++++++++++++++++++ tests/qtest/meson.build | 2 +- 2 files changed, 106 insertions(+), 1 deletion(-) create mode 100644 tests/qtest/bcm2835-i2c-test.c diff --git a/tests/qtest/bcm2835-i2c-test.c b/tests/qtest/bcm2835-i2c-test.c new file mode 100644 index 0000000000..6ec15b8976 --- /dev/null +++ b/tests/qtest/bcm2835-i2c-test.c @@ -0,0 +1,105 @@ +/* + * QTest testcase for Broadcom Serial Controller (BSC) + * + * Copyright (c) 2024 Rayhan Faizel + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included= in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS= OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OT= HER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING= FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS = IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include "libqtest-single.h" + +#include "hw/i2c/bcm2835_i2c.h" +#include "hw/sensor/tmp105_regs.h" + +static const uint32_t bsc_base_addrs[] =3D { + 0x3f205000, /* I2C0 */ + 0x3f804000, /* I2C1 */ + 0x3f805000, /* I2C2 */ +}; + +static void bcm2835_i2c_init_transfer(uint32_t base_addr, bool read) +{ + /* read flag is bit 0 so we can write it directly */ + int interrupt =3D read ? BCM2835_I2C_C_INTR : BCM2835_I2C_C_INTT; + + writel(base_addr + BCM2835_I2C_C, + BCM2835_I2C_C_I2CEN | BCM2835_I2C_C_INTD | + BCM2835_I2C_C_ST | BCM2835_I2C_C_CLEAR | interrupt | read); +} + +static void test_i2c_read_write(gconstpointer data) +{ + uint32_t i2cdata; + intptr_t index =3D (intptr_t) data; + uint32_t base_addr =3D bsc_base_addrs[index]; + + /* Write to TMP105 register */ + writel(base_addr + BCM2835_I2C_A, 0x50); + writel(base_addr + BCM2835_I2C_DLEN, 3); + + bcm2835_i2c_init_transfer(base_addr, 0); + + writel(base_addr + BCM2835_I2C_FIFO, TMP105_REG_T_HIGH); + writel(base_addr + BCM2835_I2C_FIFO, 0xde); + writel(base_addr + BCM2835_I2C_FIFO, 0xad); + + + /* Read from TMP105 register */ + writel(base_addr + BCM2835_I2C_A, 0x50); + writel(base_addr + BCM2835_I2C_DLEN, 1); + + bcm2835_i2c_init_transfer(base_addr, 0); + + writel(base_addr + BCM2835_I2C_FIFO, TMP105_REG_T_HIGH); + + writel(base_addr + BCM2835_I2C_DLEN, 2); + bcm2835_i2c_init_transfer(base_addr, 1); + + i2cdata =3D readl(base_addr + BCM2835_I2C_FIFO); + g_assert_cmpint(i2cdata, =3D=3D, 0xde); + + i2cdata =3D readl(base_addr + BCM2835_I2C_FIFO); + g_assert_cmpint(i2cdata, =3D=3D, 0xad); +} + +int main(int argc, char **argv) +{ + int ret; + int i; + + g_test_init(&argc, &argv, NULL); + + for (i =3D 0; i < 3; i++) { + g_autofree char *test_name =3D + g_strdup_printf("/bcm2835/bcm2835-i2c%d/read_write", i); + qtest_add_data_func(test_name, (void *)(intptr_t) i, + test_i2c_read_write); + } + + /* Run I2C tests with TMP105 slaves on all three buses */ + qtest_start("-M raspi3b " + "-device tmp105,address=3D0x50,bus=3Di2c-bus.0 " + "-device tmp105,address=3D0x50,bus=3Di2c-bus.1 " + "-device tmp105,address=3D0x50,bus=3Di2c-bus.2"); + ret =3D g_test_run(); + qtest_end(); + + return ret; +} diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 39557d5ecb..8fe303160e 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -228,7 +228,7 @@ qtests_aarch64 =3D \ ['tpm-tis-device-test', 'tpm-tis-device-swtpm-test'] : []) + = \ (config_all_devices.has_key('CONFIG_XLNX_ZYNQMP_ARM') ? ['xlnx-can-test'= , 'fuzz-xlnx-dp-test'] : []) + \ (config_all_devices.has_key('CONFIG_XLNX_VERSAL') ? ['xlnx-canfd-test', = 'xlnx-versal-trng-test'] : []) + \ - (config_all_devices.has_key('CONFIG_RASPI') ? ['bcm2835-dma-test'] : [])= + \ + (config_all_devices.has_key('CONFIG_RASPI') ? ['bcm2835-dma-test', 'bcm2= 835-i2c-test'] : []) + \ (config_all_accel.has_key('CONFIG_TCG') and = \ config_all_devices.has_key('CONFIG_TPM_TIS_I2C') ? ['tpm-tis-i2c-test']= : []) + \ (config_all_devices.has_key('CONFIG_NPCM7XX') ? qtests_npcm7xx : []) + \ --=20 2.34.1