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Mon, 26 Aug 2024 23:46:10 -0700 (PDT) Date: Mon, 26 Aug 2024 23:45:25 -0700 In-Reply-To: <20240827064529.1246786-1-tavip@google.com> Mime-Version: 1.0 References: <20240827064529.1246786-1-tavip@google.com> X-Mailer: git-send-email 2.46.0.295.g3b9ea8a38a-goog Message-ID: <20240827064529.1246786-22-tavip@google.com> Subject: [RFC PATCH v3 21/24] hw/misc: add spi-tester From: Octavian Purdila To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, stefanst@google.com, pbonzini@redhat.com, peter.maydell@linaro.org, marcandre.lureau@redhat.com, berrange@redhat.com, eduardo@habkost.net, luc@lmichel.fr, damien.hedde@dahe.fr, alistair@alistair23.me, thuth@redhat.com, philmd@linaro.org, jsnow@redhat.com, crosa@redhat.com, lvivier@redhat.com Received-SPF: pass client-ip=2607:f8b0:4864:20::64a; envelope-from=3MnbNZgUKCpEEvG3A19916z.x97Bz7F-yzGz689818F.9C1@flex--tavip.bounces.google.com; helo=mail-pl1-x64a.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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Add a simple SPI peripheral that echoes back received data. Useful for testing SPI controllers. Signed-off-by: Octavian Purdila --- include/hw/misc/spi_tester.h | 32 ++++++++++++++++++++++ hw/misc/spi_tester.c | 52 ++++++++++++++++++++++++++++++++++++ hw/misc/Kconfig | 5 ++++ hw/misc/meson.build | 1 + 4 files changed, 90 insertions(+) create mode 100644 include/hw/misc/spi_tester.h create mode 100644 hw/misc/spi_tester.c diff --git a/include/hw/misc/spi_tester.h b/include/hw/misc/spi_tester.h new file mode 100644 index 0000000000..8935f3f1af --- /dev/null +++ b/include/hw/misc/spi_tester.h @@ -0,0 +1,32 @@ +/* + * Simple SPI peripheral device used for SPI controller testing. + * + * 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. + */ + +#ifndef HW_SPI_TESTER_H +#define HW_SPI_TESTER_H + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "qemu/module.h" +#include "qemu/bswap.h" +#include "hw/irq.h" +#include "hw/ssi/ssi.h" +#include "qemu/timer.h" +#include "hw/qdev-properties.h" + +#define TYPE_SPI_TESTER "spi-tester" +#define SPI_TESTER(obj) OBJECT_CHECK(SpiTesterState, (obj), TYPE_SPI_TESTER) + +typedef struct { + SSIPeripheral ssidev; + bool cs; +} SpiTesterState; + +#endif /* HW_SPI_TESTER_H */ diff --git a/hw/misc/spi_tester.c b/hw/misc/spi_tester.c new file mode 100644 index 0000000000..86599d1184 --- /dev/null +++ b/hw/misc/spi_tester.c @@ -0,0 +1,52 @@ +/* + * Simple SPI peripheral echo device used for SPI controller testing. + * + * 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 "hw/misc/spi_tester.h" + +static uint32_t spi_tester_transfer(SSIPeripheral *dev, uint32_t value) +{ + SpiTesterState *s = SPI_TESTER(dev); + + if (s->cs) { + return 0; + } + + return value; +} + +static int spi_tester_set_cs(SSIPeripheral *dev, bool select) +{ + SpiTesterState *s = SPI_TESTER(dev); + + s->cs = select; + + return 0; +} + +static void spi_tester_class_init(ObjectClass *klass, void *data) +{ + SSIPeripheralClass *k = SSI_PERIPHERAL_CLASS(klass); + + k->transfer = spi_tester_transfer; + k->set_cs = spi_tester_set_cs; + k->cs_polarity = SSI_CS_LOW; +} + +static const TypeInfo spi_tester_types[] = { + { + .name = TYPE_SPI_TESTER, + .parent = TYPE_SSI_PERIPHERAL, + .instance_size = sizeof(SpiTesterState), + .class_init = spi_tester_class_init, + }, +}; + +DEFINE_TYPES(spi_tester_types); diff --git a/hw/misc/Kconfig b/hw/misc/Kconfig index 3e93c12c8e..484ee3149f 100644 --- a/hw/misc/Kconfig +++ b/hw/misc/Kconfig @@ -218,6 +218,11 @@ config I2C_TESTER default y if TEST_DEVICES depends on I2C +config SPI_TESTER + bool + default y if TEST_DEVICES + depends on SSI + config FLEXCOMM bool select I2C diff --git a/hw/misc/meson.build b/hw/misc/meson.build index a0f7a52a23..c804237712 100644 --- a/hw/misc/meson.build +++ b/hw/misc/meson.build @@ -158,6 +158,7 @@ system_ss.add(when: 'CONFIG_SBSA_REF', if_true: files('sbsa_ec.c')) system_ss.add(when: 'CONFIG_LASI', if_true: files('lasi.c')) system_ss.add(when: 'CONFIG_I2C_TESTER', if_true: files('i2c_tester.c')) +system_ss.add(when: 'CONFIG_SPI_TESTER', if_true: files('spi_tester.c')) system_ss.add(when: 'CONFIG_FLEXCOMM', if_true: files('flexcomm.c')) system_ss.add(when: 'CONFIG_RT500_CLKCTL', if_true: files('rt500_clkctl0.c', 'rt500_clkctl1.c'))