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authorSimon Glass <sjg@chromium.org>2019-09-15 12:08:58 -0600
committerBin Meng <bmeng.cn@gmail.com>2019-10-08 13:57:43 +0800
commit33c215af4b9de32e5052bb716411dc34ce9b63ac (patch)
tree36b6e9cc1fba5109206109b94a85fa64e6a0e6f7 /test
parent6a73cf3d8fe32f3bddd4ba7dd47dcb75df5ca592 (diff)
downloadu-boot-33c215af4b9de32e5052bb716411dc34ce9b63ac.tar.gz
dm: pci: Add a function to read a PCI BAR
At present PCI address transaction is not supported so drivers must manually read the correct BAR after reading the device tree info. The ns16550 has a suitable implementation, so move this code into the core DM support. Note that there is no live-tree equivalent at present. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com> [bmeng: correct the unclear comments in test.dts] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'test')
-rw-r--r--test/dm/pci.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/test/dm/pci.c b/test/dm/pci.c
index e70b65aea4..fb93e4c78a 100644
--- a/test/dm/pci.c
+++ b/test/dm/pci.c
@@ -294,3 +294,48 @@ static int dm_test_pci_ea(struct unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_pci_ea, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
+
+/* Test the dev_read_addr_pci() function */
+static int dm_test_pci_addr_flat(struct unit_test_state *uts)
+{
+ struct udevice *swap1f, *swap1;
+ ulong io_addr, mem_addr;
+
+ ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1f, 0), &swap1f));
+ io_addr = dm_pci_read_bar32(swap1f, 0);
+ ut_asserteq(io_addr, dev_read_addr_pci(swap1f));
+
+ /*
+ * This device has both I/O and MEM spaces but the MEM space appears
+ * first
+ */
+ ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1, 0), &swap1));
+ mem_addr = dm_pci_read_bar32(swap1, 1);
+ ut_asserteq(mem_addr, dev_read_addr_pci(swap1));
+
+ return 0;
+}
+DM_TEST(dm_test_pci_addr_flat, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT |
+ DM_TESTF_FLAT_TREE);
+
+/*
+ * Test the dev_read_addr_pci() function with livetree. That function is
+ * not currently fully implemented, in that it fails to return the BAR address.
+ * Once that is implemented this test can be removed and dm_test_pci_addr_flat()
+ * can be used for both flattree and livetree by removing the DM_TESTF_FLAT_TREE
+ * flag above.
+ */
+static int dm_test_pci_addr_live(struct unit_test_state *uts)
+{
+ struct udevice *swap1f, *swap1;
+
+ ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1f, 0), &swap1f));
+ ut_asserteq(FDT_ADDR_T_NONE, dev_read_addr_pci(swap1f));
+
+ ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(0, 0x1, 0), &swap1));
+ ut_asserteq(FDT_ADDR_T_NONE, dev_read_addr_pci(swap1));
+
+ return 0;
+}
+DM_TEST(dm_test_pci_addr_live, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT |
+ DM_TESTF_LIVE_TREE);