1 files changed, 49 insertions, 0 deletions
diff --git a/test/dm/pci.c b/test/dm/pci.c
index a1febd54b7..c325f6600e 100644
--- a/test/dm/pci.c
+++ b/test/dm/pci.c
@@ -245,3 +245,52 @@ static int dm_test_pci_cap(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_pci_cap, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test looking up BARs in EA capability structure */
+static int dm_test_pci_ea(struct unit_test_state *uts)
+{
+	struct udevice *bus, *swap;
+	void *bar;
+	int cap;
+
+	/*
+	 * use emulated device mapping function, we're not using real physical
+	 * addresses in this test
+	 */
+	sandbox_set_enable_pci_map(true);
+
+	ut_assertok(uclass_get_device_by_seq(UCLASS_PCI, 0, &bus));
+	ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x01, 0), &swap));
+
+	/* look up PCI_CAP_ID_EA */
+	cap = dm_pci_find_capability(swap, PCI_CAP_ID_EA);
+	ut_asserteq(PCI_CAP_ID_EA_OFFSET, cap);
+
+	/* test swap case in BAR 1 */
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_0, 0);
+	ut_assertnonnull(bar);
+	*(int *)bar = 2; /* swap upper/lower */
+
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_1, 0);
+	ut_assertnonnull(bar);
+	strcpy(bar, "ea TEST");
+	unmap_sysmem(bar);
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_1, 0);
+	ut_assertnonnull(bar);
+	ut_asserteq_str("EA test", bar);
+
+	/* test magic values in BARs2, 4;  BAR 3 is n/a */
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_2, 0);
+	ut_assertnonnull(bar);
+	ut_asserteq(PCI_EA_BAR2_MAGIC, *(u32 *)bar);
+
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_3, 0);
+	ut_assertnull(bar);
+
+	bar = dm_pci_map_bar(swap, PCI_BASE_ADDRESS_4, 0);
+	ut_assertnonnull(bar);
+	ut_asserteq(PCI_EA_BAR4_MAGIC, *(u32 *)bar);
+
+	return 0;
+}
+DM_TEST(dm_test_pci_ea, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);