Introduce a libqos helper module for the iommu-testdev device used by qtests. This module provides some common functions to all IOMMU test cases using iommu-testdev.
Wire the new sources into tests/qtest/libqos/meson.build so they are built as part of the qtest support library. Signed-off-by: Tao Tang <[email protected]> --- MAINTAINERS | 5 ++ tests/qtest/libqos/meson.build | 3 + tests/qtest/libqos/qos-iommu-testdev.c | 82 ++++++++++++++++++++++++++ tests/qtest/libqos/qos-iommu-testdev.h | 43 ++++++++++++++ 4 files changed, 133 insertions(+) create mode 100644 tests/qtest/libqos/qos-iommu-testdev.c create mode 100644 tests/qtest/libqos/qos-iommu-testdev.h diff --git a/MAINTAINERS b/MAINTAINERS index 1abfec594f..ee8f6eb3af 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3578,6 +3578,11 @@ F: docs/devel/testing/qtest.rst X: tests/qtest/bios-tables-test* X: tests/qtest/migration-* +QTest IOMMU helpers +M: Tao Tang <[email protected]> +S: Maintained +F: tests/qtest/libqos/qos-iommu* + Device Fuzzing M: Alexander Bulekov <[email protected]> R: Paolo Bonzini <[email protected]> diff --git a/tests/qtest/libqos/meson.build b/tests/qtest/libqos/meson.build index 1ddaf7b095..9805d63a29 100644 --- a/tests/qtest/libqos/meson.build +++ b/tests/qtest/libqos/meson.build @@ -60,6 +60,9 @@ libqos_srcs = files( 'x86_64_pc-machine.c', 'riscv-virt-machine.c', 'loongarch-virt-machine.c', + + # SMMU: + 'qos-iommu-testdev.c', ) if have_virtfs diff --git a/tests/qtest/libqos/qos-iommu-testdev.c b/tests/qtest/libqos/qos-iommu-testdev.c new file mode 100644 index 0000000000..91718a5673 --- /dev/null +++ b/tests/qtest/libqos/qos-iommu-testdev.c @@ -0,0 +1,82 @@ +/* + * IOMMU test device helpers for libqos qtests + * + * Copyright (c) 2026 Phytium Technology + * + * Author: + * Tao Tang <[email protected]> + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include "../libqtest.h" +#include "pci.h" +#include "qos-iommu-testdev.h" + +uint32_t qos_iommu_testdev_trigger_dma(QPCIDevice *dev, QPCIBar bar, + uint64_t iova, uint64_t gpa, + uint32_t len, uint32_t attrs) +{ + uint32_t result = ITD_DMA_RESULT_BUSY; + + qpci_io_writel(dev, bar, ITD_REG_DMA_GVA_LO, (uint32_t)iova); + qpci_io_writel(dev, bar, ITD_REG_DMA_GVA_HI, (uint32_t)(iova >> 32)); + qpci_io_writel(dev, bar, ITD_REG_DMA_GPA_LO, (uint32_t)gpa); + qpci_io_writel(dev, bar, ITD_REG_DMA_GPA_HI, (uint32_t)(gpa >> 32)); + qpci_io_writel(dev, bar, ITD_REG_DMA_LEN, len); + qpci_io_writel(dev, bar, ITD_REG_DMA_ATTRS, attrs); + + qpci_io_writel(dev, bar, ITD_REG_DMA_DBELL, ITD_DMA_DBELL_ARM); + qpci_io_readl(dev, bar, ITD_REG_DMA_TRIGGERING); + + for (int i = 0; i < 1000; i++) { + result = qpci_io_readl(dev, bar, ITD_REG_DMA_RESULT); + if (result != ITD_DMA_RESULT_BUSY) { + break; + } + g_usleep(1000); + } + + if (result == ITD_DMA_RESULT_BUSY) { + return ITD_DMA_ERR_TX_FAIL; + } + + return result; +} + +void qos_iommu_testdev_single_translation(const QOSIOMMUTestdevDmaCfg *dma, + void *opaque, + QOSIOMMUTestdevSetupFn setup_fn, + QOSIOMMUTestdevAttrsFn attrs_fn, + QOSIOMMUTestdevValidateFn validate_fn, + QOSIOMMUTestdevReportFn report_fn, + uint32_t *dma_result_out) +{ + uint32_t config_result; + uint32_t dma_result; + uint32_t attrs_val; + + g_assert(dma); + g_assert(setup_fn); + g_assert(attrs_fn); + + config_result = setup_fn(opaque); + g_assert_cmpuint(config_result, ==, 0); + + attrs_val = attrs_fn(opaque); + dma_result = qos_iommu_testdev_trigger_dma(dma->dev, dma->bar, + dma->iova, dma->gpa, + dma->len, attrs_val); + if (dma_result_out) { + *dma_result_out = dma_result; + } + + if (report_fn) { + report_fn(opaque, dma_result); + } + + if (validate_fn) { + g_assert_true(validate_fn(opaque)); + } +} diff --git a/tests/qtest/libqos/qos-iommu-testdev.h b/tests/qtest/libqos/qos-iommu-testdev.h new file mode 100644 index 0000000000..3713b89ea4 --- /dev/null +++ b/tests/qtest/libqos/qos-iommu-testdev.h @@ -0,0 +1,43 @@ +/* + * IOMMU test device helpers for libqos qtests + * + * Copyright (c) 2026 Phytium Technology + * + * Author: + * Tao Tang <[email protected]> + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef QTEST_LIBQOS_IOMMU_TESTDEV_H +#define QTEST_LIBQOS_IOMMU_TESTDEV_H + +#include "pci.h" +#include "hw/misc/iommu-testdev.h" + +typedef uint32_t (*QOSIOMMUTestdevSetupFn)(void *opaque); +typedef uint32_t (*QOSIOMMUTestdevAttrsFn)(void *opaque); +typedef bool (*QOSIOMMUTestdevValidateFn)(void *opaque); +typedef void (*QOSIOMMUTestdevReportFn)(void *opaque, uint32_t dma_result); + +typedef struct QOSIOMMUTestdevDmaCfg { + QPCIDevice *dev; + QPCIBar bar; + uint64_t iova; + uint64_t gpa; + uint32_t len; +} QOSIOMMUTestdevDmaCfg; + +uint32_t qos_iommu_testdev_trigger_dma(QPCIDevice *dev, QPCIBar bar, + uint64_t iova, uint64_t gpa, + uint32_t len, uint32_t attrs); + +void qos_iommu_testdev_single_translation(const QOSIOMMUTestdevDmaCfg *dma, + void *opaque, + QOSIOMMUTestdevSetupFn setup_fn, + QOSIOMMUTestdevAttrsFn attrs_fn, + QOSIOMMUTestdevValidateFn validate_fn, + QOSIOMMUTestdevReportFn report_fn, + uint32_t *dma_result_out); + +#endif /* QTEST_LIBQOS_IOMMU_TESTDEV_H */ -- 2.34.1
