Add tests for the functions dm_pci_bus_to_phys() and dm_pci_phys_to_bus() which convert between PCI bus addresses and physical addresses based on the ranges declared for the PCI controller.
The ranges of bus#1 are used for the tests, adding a translation to one of the ranges to cover more cases.
Signed-off-by: Andrew Scull ascull@google.com --- arch/sandbox/dts/test.dts | 2 +- test/dm/pci.c | 102 ++++++++++++++++++++++++++++++++++++++ 2 files changed, 103 insertions(+), 1 deletion(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index 05c1cd5e1a..2b5f6ae92d 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -971,7 +971,7 @@ #address-cells = <3>; #size-cells = <2>; ranges = <0x02000000 0 0x30000000 0x30000000 0 0x2000 // MEM0 - 0x02000000 0 0x31000000 0x31000000 0 0x2000 // MEM1 + 0x02000000 0 0x31000000 0x3e000000 0 0x2000 // MEM1 0x01000000 0 0x40000000 0x40000000 0 0x2000>; sandbox,dev-info = <0x08 0x00 0x1234 0x5678 0x0c 0x00 0x1234 0x5678 diff --git a/test/dm/pci.c b/test/dm/pci.c index 00e4440a9d..eff599ef32 100644 --- a/test/dm/pci.c +++ b/test/dm/pci.c @@ -376,3 +376,105 @@ static int dm_test_pci_region_multi(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_pci_region_multi, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +/* + * Test the translation of PCI bus addresses to physical addresses using the + * ranges from bus#1. + */ +static int dm_test_pci_bus_to_phys(struct unit_test_state *uts) +{ + struct udevice *dev; + phys_addr_t phys_addr; + + ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &dev)); + + /* Before any of the ranges. */ + phys_addr = dm_pci_bus_to_phys(dev, 0x20000000, 0x400, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + + /* Identity range: whole, start, mid, end */ + phys_addr = dm_pci_bus_to_phys(dev, 0x2ffff000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x30000000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0x30000000, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x30000000, 0x1000, PCI_REGION_MEM); + ut_asserteq(0x30000000, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x30000abc, 0x12, PCI_REGION_MEM); + ut_asserteq(0x30000abc, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x30000800, 0x1800, PCI_REGION_MEM); + ut_asserteq(0x30000800, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x30008000, 0x1801, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + + /* Translated range: whole, start, mid, end */ + phys_addr = dm_pci_bus_to_phys(dev, 0x30fff000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x31000000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0x3e000000, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x31000000, 0x1000, PCI_REGION_MEM); + ut_asserteq(0x3e000000, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x31000abc, 0x12, PCI_REGION_MEM); + ut_asserteq(0x3e000abc, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x31000800, 0x1800, PCI_REGION_MEM); + ut_asserteq(0x3e000800, phys_addr); + phys_addr = dm_pci_bus_to_phys(dev, 0x31008000, 0x1801, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + + /* Beyond all of the ranges. */ + phys_addr = dm_pci_bus_to_phys(dev, 0x32000000, 0x400, PCI_REGION_MEM); + ut_asserteq(0, phys_addr); + + return 0; +} +DM_TEST(dm_test_pci_bus_to_phys, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +/* + * Test the translation of physical addresses to PCI bus addresses using the + * ranges from bus#1. + */ +static int dm_test_pci_phys_to_bus(struct unit_test_state *uts) +{ + struct udevice *dev; + pci_addr_t pci_addr; + + ut_assertok(dm_pci_bus_find_bdf(PCI_BDF(1, 0x08, 0), &dev)); + + /* Before any of the ranges. */ + pci_addr = dm_pci_phys_to_bus(dev, 0x20000000, 0x400, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + + /* Identity range: partial overlap, whole, start, mid, end */ + pci_addr = dm_pci_phys_to_bus(dev, 0x2ffff000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x30000000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0x30000000, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x30000000, 0x1000, PCI_REGION_MEM); + ut_asserteq(0x30000000, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x30000abc, 0x12, PCI_REGION_MEM); + ut_asserteq(0x30000abc, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x30000800, 0x1800, PCI_REGION_MEM); + ut_asserteq(0x30000800, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x30008000, 0x1801, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + + /* Translated range: partial overlap, whole, start, mid, end */ + pci_addr = dm_pci_phys_to_bus(dev, 0x3dfff000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x3e000000, 0x2000, PCI_REGION_MEM); + ut_asserteq(0x31000000, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x3e000000, 0x1000, PCI_REGION_MEM); + ut_asserteq(0x31000000, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x3e000abc, 0x12, PCI_REGION_MEM); + ut_asserteq(0x31000abc, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x3e000800, 0x1800, PCI_REGION_MEM); + ut_asserteq(0x31000800, pci_addr); + pci_addr = dm_pci_phys_to_bus(dev, 0x3e008000, 0x1801, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + + /* Beyond all of the ranges. */ + pci_addr = dm_pci_phys_to_bus(dev, 0x3f000000, 0x400, PCI_REGION_MEM); + ut_asserteq(0, pci_addr); + + return 0; +} +DM_TEST(dm_test_pci_phys_to_bus, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);