test: dm: Add a test for PCI Enhanced Allocation
This test is built on top of the existing swap_case driver. It adds EA
capability structure support to swap_case and uses that to map BARs.
BAR1 works as it used to, swapping upper/lower case. BARs 2,4 map to a
couple of magic values.
Signed-off-by: Alex Marginean <alexm.osslist@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/test/dm/pci.c b/test/dm/pci.c
index a1febd5..c325f66 100644
--- a/test/dm/pci.c
+++ b/test/dm/pci.c
@@ -245,3 +245,52 @@
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);