test: Add test for IOMMU uclass map/unmap ops
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>
diff --git a/test/dm/iommu.c b/test/dm/iommu.c
index 94174a7..6f932ef 100644
--- a/test/dm/iommu.c
+++ b/test/dm/iommu.c
@@ -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 @@
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);