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test: Add test for mapping IOMMUs for PCI devices

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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>
This commit is contained in:
Mark Kettenis 2023-01-21 20:27:57 +01:00 committed by Tom Rini
parent 1fc2329121
commit 08386da0c6
2 changed files with 32 additions and 0 deletions
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2
arch/sandbox/dts/test.dts
View file

@ -1036,6 +1036,8 @@
#size-cells = <2>;
ranges = <0x02000000 0 0x10000000 0x10000000 0 0x2000000
0x01000000 0 0x20000000 0x20000000 0 0x2000>;
iommu-map = <0x0010 &iommu 0 1>;
iommu-map-mask = <0xfffffff8>;
pci@0,0 {
compatible = "pci-generic";
reg = <0x0000 0 0 0 0>;

30
test/dm/iommu.c
View file

@ -68,3 +68,33 @@ static int dm_test_iommu_noiommu(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_iommu_noiommu, UT_TESTF_SCAN_FDT);
static int dm_test_iommu_pci(struct unit_test_state *uts)
{
struct udevice *dev;
ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
/* Probing P2SB probes the IOMMU through the "iommu-map" property */
ut_assertok(uclass_probe_all(UCLASS_P2SB));
ut_assert(dev_get_flags(dev) & DM_FLAG_ACTIVATED);
return 0;
}
DM_TEST(dm_test_iommu_pci, UT_TESTF_SCAN_FDT);
static int dm_test_iommu_pci_noiommu(struct unit_test_state *uts)
{
struct udevice *dev;
ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
/* Probing PMC should not probe the IOMMU */
ut_assertok(uclass_probe_all(UCLASS_ACPI_PMC));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
return 0;
}
DM_TEST(dm_test_iommu_pci_noiommu, UT_TESTF_SCAN_FDT);