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08386da0c6
Test that we correctly probe an IOMMU that is mapped by an "iommu-map" device tree property of a PCIe controller node. Signed-off-by: Mark Kettenis <kettenis@openbsd.org> Reviewed-by: Simon Glass <sjg@chromium.org>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2021 Mark Kettenis <kettenis@openbsd.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <dm/test.h>
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#include <dm/uclass-internal.h>
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#include <iommu.h>
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#include <malloc.h>
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#include <test/test.h>
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#include <test/ut.h>
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#include <asm/io.h>
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static int dm_test_iommu(struct unit_test_state *uts)
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{
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struct udevice *dev;
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dma_addr_t dva;
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void *addr;
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ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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/* Probing USB probes the IOMMU through the "iommus" property */
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ut_assertok(uclass_probe_all(UCLASS_USB));
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ut_assert(dev_get_flags(dev) & DM_FLAG_ACTIVATED);
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addr = malloc(256);
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ut_assert(addr);
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ut_assertok(uclass_find_device(UCLASS_USB, 0, &dev));
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dva = dev_iommu_dma_map(dev, addr, 256);
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ut_assert(dva >= 0x89abc000 && dva < 0x89ac00000);
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dev_iommu_dma_unmap(dev, dva, 256);
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free(addr);
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return 0;
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}
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DM_TEST(dm_test_iommu, UT_TESTF_SCAN_FDT);
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static int dm_test_iommu_noiommu(struct unit_test_state *uts)
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{
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struct udevice *dev;
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dma_addr_t dva;
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void *addr;
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ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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/* Probing ethernet should not probe the IOMMU */
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ut_assertok(uclass_probe_all(UCLASS_ETH));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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addr = malloc(256);
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ut_assert(addr);
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ut_assertok(uclass_find_device(UCLASS_ETH, 0, &dev));
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dva = dev_iommu_dma_map(dev, addr, 256);
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ut_assert(dva == virt_to_phys(addr));
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dev_iommu_dma_unmap(dev, dva, 256);
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free(addr);
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return 0;
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}
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DM_TEST(dm_test_iommu_noiommu, UT_TESTF_SCAN_FDT);
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static int dm_test_iommu_pci(struct unit_test_state *uts)
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{
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struct udevice *dev;
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ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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/* Probing P2SB probes the IOMMU through the "iommu-map" property */
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ut_assertok(uclass_probe_all(UCLASS_P2SB));
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ut_assert(dev_get_flags(dev) & DM_FLAG_ACTIVATED);
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return 0;
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}
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DM_TEST(dm_test_iommu_pci, UT_TESTF_SCAN_FDT);
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static int dm_test_iommu_pci_noiommu(struct unit_test_state *uts)
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{
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struct udevice *dev;
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ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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/* Probing PMC should not probe the IOMMU */
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ut_assertok(uclass_probe_all(UCLASS_ACPI_PMC));
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ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
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return 0;
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}
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DM_TEST(dm_test_iommu_pci_noiommu, UT_TESTF_SCAN_FDT);
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