linux-kernel - [PATCH 5.10 27/42] of: unittest: Add test for of_dma_get_max_cpu

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Message-Id: <20210308122719.466319281@linuxfoundation.org>
Date:   Mon,  8 Mar 2021 13:30:53 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Rob Herring <robh@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Jing Xiangfeng <jingxiangfeng@...wei.com>
Subject: [PATCH 5.10 27/42] of: unittest: Add test for of_dma_get_max_cpu_address()

From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>

commit 07d13a1d6120d453c3c1f020578693d072deded5 upstream

Introduce a test for of_dma_get_max_cup_address(), it uses the same DT
data as the rest of dma-ranges unit tests.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
Reviewed-by: Rob Herring <robh@...nel.org>
Link: https://lore.kernel.org/r/20201119175400.9995-5-nsaenzjulienne@suse.de
Signed-off-by: Catalin Marinas <catalin.marinas@....com>
Cc: <stable@...r.kernel.org>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@...wei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/of/unittest.c |   18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -869,6 +869,23 @@ static void __init of_unittest_changeset
 #endif
 }
 
+static void __init of_unittest_dma_get_max_cpu_address(void)
+{
+	struct device_node *np;
+	phys_addr_t cpu_addr;
+
+	np = of_find_node_by_path("/testcase-data/address-tests");
+	if (!np) {
+		pr_err("missing testcase data\n");
+		return;
+	}
+
+	cpu_addr = of_dma_get_max_cpu_address(np);
+	unittest(cpu_addr == 0x4fffffff,
+		 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
+		 &cpu_addr, 0x4fffffff);
+}
+
 static void __init of_unittest_dma_ranges_one(const char *path,
 		u64 expect_dma_addr, u64 expect_paddr)
 {
@@ -3266,6 +3283,7 @@ static int __init of_unittest(void)
 	of_unittest_changeset();
 	of_unittest_parse_interrupts();
 	of_unittest_parse_interrupts_extended();
+	of_unittest_dma_get_max_cpu_address();
 	of_unittest_parse_dma_ranges();
 	of_unittest_pci_dma_ranges();
 	of_unittest_match_node();