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test: dm: Add a test for PCI Enhanced Allocation

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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>
This commit is contained in:
Alex Marginean
2019-06-07 11:24:24 +03:00
committed by Simon Glass
parent 0b143d8ab2
commit 21ebbafde8
4 changed files with 171 additions and 1 deletions
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49
test/dm/pci.c
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@@ -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);