diff options
| author | Simon Glass | 2019-09-15 12:08:58 -0600 |
|---|---|---|
| committer | Bin Meng | 2019-10-08 13:57:43 +0800 |
| commit | 33c215af4b9de32e5052bb716411dc34ce9b63ac (patch) | |
| tree | 36b6e9cc1fba5109206109b94a85fa64e6a0e6f7 /test/dm | |
| parent | 6a73cf3d8fe32f3bddd4ba7dd47dcb75df5ca592 (diff) | |
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/dm')
| -rw-r--r-- | test/dm/pci.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/test/dm/pci.c b/test/dm/pci.c index e70b65aea4a..fb93e4c78ae 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); |