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test: Add test for IOMMU uclass map/unmap ops

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Test that the map and unmap operations work for devices that
have DMA translated by an IOMMU and devices that don't have
DMA translated by an IOMMU.

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 20:27:53 +01:00
committed by Tom Rini
parent dd6b68ed4f
commit 49a1a4becb
2 changed files with 101 additions and 1 deletions
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44
test/dm/iommu.c
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@@ -8,12 +8,16 @@
#include <dm/test.h>
#include <dm/uclass-internal.h>
#include <iommu.h>
#include <malloc.h>
#include <test/test.h>
#include <test/ut.h>
#include <asm/io.h>
static int dm_test_iommu(struct unit_test_state *uts)
{
struct udevice *dev;
dma_addr_t dva;
void *addr;
ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
@@ -22,7 +26,45 @@ static int dm_test_iommu(struct unit_test_state *uts)
ut_assertok(uclass_probe_all(UCLASS_USB));
ut_assert(dev_get_flags(dev) & DM_FLAG_ACTIVATED);
addr = malloc(256);
ut_assert(addr);
ut_assertok(uclass_find_device(UCLASS_USB, 0, &dev));
dva = dev_iommu_dma_map(dev, addr, 256);
ut_assert(dva >= 0x89abc000 && dva < 0x89ac00000);
dev_iommu_dma_unmap(dev, dva, 256);
free(addr);
return 0;
}
DM_TEST(dm_test_iommu, UT_TESTF_SCAN_FDT);
static int dm_test_iommu_noiommu(struct unit_test_state *uts)
{
struct udevice *dev;
dma_addr_t dva;
void *addr;
ut_assertok(uclass_find_device(UCLASS_IOMMU, 0, &dev));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
/* Probing ethernet should not probe the IOMMU */
ut_assertok(uclass_probe_all(UCLASS_ETH));
ut_assert(!(dev_get_flags(dev) & DM_FLAG_ACTIVATED));
addr = malloc(256);
ut_assert(addr);
ut_assertok(uclass_find_device(UCLASS_ETH, 0, &dev));
dva = dev_iommu_dma_map(dev, addr, 256);
ut_assert(dva == virt_to_phys(addr));
dev_iommu_dma_unmap(dev, dva, 256);
free(addr);
return 0;
}
DM_TEST(dm_test_iommu_noiommu, UT_TESTF_SCAN_FDT);