u-boot/0019-dm-test-Add-test-case-for-dev_get_d.patch

From 8cc51dc21c710f48692ba6fa1b51f9da3f7de9ca Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Tue, 15 Dec 2020 13:51:16 +0100
Subject: [PATCH] dm: test: Add test case for dev_get_dma_ranges()

Introduce some new nodes in sandbox's test device-tree and dm tests in
order to validate dev_get_dma_range().

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

---
Changes since v3:
 - Use ut_assertok() instead of ut_assert(!func())
---
 arch/sandbox/dts/test.dts | 17 ++++++++++++++
 test/dm/Makefile          |  1 +
 test/dm/read.c            | 49 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+)
 create mode 100644 test/dm/read.c

diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 9f45c48e4e..c0ac4a793c 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -270,6 +270,23 @@
 		compatible = "denx,u-boot-devres-test";
 	};
 
+	mmio-bus@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "denx,u-boot-test-bus";
+		dma-ranges = <0x10000000 0x00000000 0x00040000>;
+
+		subnode@0 {
+			compatible = "denx,u-boot-fdt-test";
+		};
+	};
+
+	mmio-bus@1 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "denx,u-boot-test-bus";
+	};
+
 	acpi_test1: acpi-test {
 		compatible = "denx,u-boot-acpi-test";
 		acpi-ssdt-test-data = "ab";
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 864c8d0b4c..3cf5c0f2ca 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_UT_DM) += test-uclass.o
 # Tests for particular subsystems - when enabling driver model for a new
 # subsystem you must add sandbox tests here.
 obj-$(CONFIG_UT_DM) += core.o
+obj-$(CONFIG_UT_DM) += read.o
 ifneq ($(CONFIG_SANDBOX),)
 obj-$(CONFIG_ACPIGEN) += acpi.o
 obj-$(CONFIG_ACPIGEN) += acpigen.o
diff --git a/test/dm/read.c b/test/dm/read.c
new file mode 100644
index 0000000000..7768aa2968
--- /dev/null
+++ b/test/dm/read.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2020 Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/device.h>
+#include <dm/ofnode.h>
+#include <dm/root.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <test/ut.h>
+
+static int dm_test_dma_ranges(struct unit_test_state *uts)
+{
+	struct udevice *dev;
+	phys_addr_t cpu;
+	dma_addr_t bus;
+	ofnode node;
+	u64 size;
+
+	/* dma-ranges are on the device's node */
+	node = ofnode_path("/mmio-bus@0");
+	ut_assert(ofnode_valid(node));
+	ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+	ut_assertok(dev_get_dma_range(dev, &cpu, &bus, &size));
+	ut_asserteq_64(0x40000, size);
+	ut_asserteq_64(0x0, cpu);
+	ut_asserteq_64(0x10000000, bus);
+
+	/* dma-ranges are on the bus' node */
+	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_assertok(dev_get_dma_range(dev, &cpu, &bus, &size));
+	ut_asserteq_64(0x40000, size);
+	ut_asserteq_64(0x0, cpu);
+	ut_asserteq_64(0x10000000, bus);
+
+	/* No dma-ranges available */
+	node = ofnode_path("/mmio-bus@1");
+	ut_assert(ofnode_valid(node));
+	ut_assertok(uclass_get_device_by_ofnode(UCLASS_TEST_BUS, node, &dev));
+	ut_asserteq(-ENOENT, dev_get_dma_range(dev, &cpu, &bus, &size));
+
+	return 0;
+}
+DM_TEST(dm_test_dma_ranges, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);