dm: test: Add test case for dev->dma_offset

Add test to validate dev->dma_offset is properly set on devices.
Signed-off-by: NNicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: NSimon Glass <sjg@chromium.org>
Tested-by: NPeter Robinson <pbrobinson@gmail.com>
Signed-off-by: NMatthias Brugger <mbrugger@suse.com>

arch/sandbox/dts/test.dts

@@ -365,6 +365,10 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "denx,u-boot-test-bus";
+
+		subnode@0 {
+			compatible = "denx,u-boot-fdt-test";
+		};
 	};
 
 	acpi_test1: acpi-test {

configs/sandbox64_defconfig

@@ -94,6 +94,7 @@ CONFIG_ENV_EXT4_DEVICE_AND_PART="0:0"
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y

configs/sandbox_defconfig

@@ -108,6 +108,7 @@ CONFIG_ENV_EXT4_DEVICE_AND_PART="0:0"
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y

configs/sandbox_flattree_defconfig

@@ -75,6 +75,7 @@ CONFIG_ENV_EXT4_DEVICE_AND_PART="0:0"
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SYSCON=y
 CONFIG_DEVRES=y

configs/sandbox_spl_defconfig

@@ -95,6 +95,7 @@ CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_NETCONSOLE=y
 CONFIG_IP_DEFRAG=y
 CONFIG_SPL_DM=y
+CONFIG_DM_DMA=y
 CONFIG_REGMAP=y
 CONFIG_SPL_REGMAP=y
 CONFIG_SYSCON=y

test/dm/core.c

@@ -1180,3 +1180,33 @@ static int dm_test_all_have_seq(struct unit_test_state *uts)
 	return 0;
 }
 DM_TEST(dm_test_all_have_seq, UT_TESTF_SCAN_PDATA);
+
+static int dm_test_dma_offset(struct unit_test_state *uts)
+{
+       struct udevice *dev;
+       ofnode node;
+
+       /* Make sure the bus's dma-ranges aren't taken into account here */
+       node = ofnode_path("/mmio-bus@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+       ut_asserteq_64(0, dev->dma_offset);
+
+       /* Device behind a bus with dma-ranges */
+       node = ofnode_path("/mmio-bus@0/subnode@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
+       ut_asserteq_64(-0x10000000ULL, dev->dma_offset);
+
+       /* This one has no dma-ranges */
+       node = ofnode_path("/mmio-bus@1");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+       node = ofnode_path("/mmio-bus@1/subnode@0");
+       ut_assert(ofnode_valid(node));
+       ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_FDT, node, &dev));
+       ut_asserteq_64(0, dev->dma_offset);
+
+       return 0;
+}
+DM_TEST(dm_test_dma_offset, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);