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Commit a9f10ca7 authored by Grant Likely's avatar Grant Likely
Browse files

of: Add testcases for interrupt parsing 



This patch extends the DT selftest code with some test cases for the
interrupt parsing functions.

Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
parent 624cfca5

arch/arm/boot/dts/testcases/tests-interrupts.dtsi

0 → 100644
+41 −0
Original line number Diff line number Diff line 


/ {

	testcase-data {

		interrupts {

			#address-cells = <0>;

			test_intc0: intc0 {

				interrupt-controller;

				#interrupt-cells = <1>;

			};



			test_intc1: intc1 {

				interrupt-controller;

				#interrupt-cells = <3>;

			};



			test_intc2: intc2 {

				interrupt-controller;

				#interrupt-cells = <2>;

			};



			test_intmap0: intmap0 {

				#interrupt-cells = <1>;

				#address-cells = <0>;

				interrupt-map = <1 &test_intc0 9>,

						<2 &test_intc1 10 11 12>,

						<3 &test_intc2 13 14>,

						<4 &test_intc2 15 16>;

			};



			interrupts0 {

				interrupt-parent = <&test_intc0>;

				interrupts = <1>, <2>, <3>, <4>;

			};



			interrupts1 {

				interrupt-parent = <&test_intmap0>;

				interrupts = <1>, <2>, <3>, <4>;

			};

		};

	};

};

arch/arm/boot/dts/testcases/tests.dtsi

+1 −0
Original line number Diff line number Diff line 
/include/ "tests-phandle.dtsi"

/include/ "tests-interrupts.dtsi"

drivers/of/selftest.c

+85 −6
Original line number Diff line number Diff line
@@ -9,18 +9,24 @@ 
#include <linux/errno.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_irq.h>

#include <linux/list.h>

#include <linux/mutex.h>

#include <linux/slab.h>

#include <linux/device.h>



static bool selftest_passed = true;

static struct selftest_results {

	int passed;

	int failed;

} selftest_results;



#define selftest(result, fmt, ...) { \

	if (!(result)) { \

		pr_err("FAIL %s:%i " fmt, __FILE__, __LINE__, ##__VA_ARGS__); \

		selftest_passed = false; \

		selftest_results.failed++; \

		pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \

	} else { \

		pr_info("pass %s:%i\n", __FILE__, __LINE__); \

		selftest_results.passed++; \

		pr_debug("pass %s():%i\n", __func__, __LINE__); \

	} \

}
@@ -131,7 +137,6 @@ static void __init of_selftest_property_match_string(void) 
	struct device_node *np;

	int rc;



	pr_info("start\n");

	np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");

	if (!np) {

		pr_err("No testcase data in device tree\n");
@@ -154,6 +159,78 @@ static void __init of_selftest_property_match_string(void) 
	selftest(rc == -EILSEQ, "unterminated string; rc=%i", rc);

}



static void __init of_selftest_parse_interrupts(void)

{

	struct device_node *np;

	struct of_phandle_args args;

	int i, rc;



	np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");

	if (!np) {

		pr_err("missing testcase data\n");

		return;

	}



	for (i = 0; i < 4; i++) {

		bool passed = true;

		args.args_count = 0;

		rc = of_irq_parse_one(np, i, &args);



		passed &= !rc;

		passed &= (args.args_count == 1);

		passed &= (args.args[0] == (i + 1));



		selftest(passed, "index %i - data error on node %s rc=%i\n",

			 i, args.np->full_name, rc);

	}

	of_node_put(np);



	np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");

	if (!np) {

		pr_err("missing testcase data\n");

		return;

	}



	for (i = 0; i < 4; i++) {

		bool passed = true;

		args.args_count = 0;

		rc = of_irq_parse_one(np, i, &args);



		/* Test the values from tests-phandle.dtsi */

		switch (i) {

		case 0:

			passed &= !rc;

			passed &= (args.args_count == 1);

			passed &= (args.args[0] == 9);

			break;

		case 1:

			passed &= !rc;

			passed &= (args.args_count == 3);

			passed &= (args.args[0] == 10);

			passed &= (args.args[1] == 11);

			passed &= (args.args[2] == 12);

			break;

		case 2:

			passed &= !rc;

			passed &= (args.args_count == 2);

			passed &= (args.args[0] == 13);

			passed &= (args.args[1] == 14);

			break;

		case 3:

			passed &= !rc;

			passed &= (args.args_count == 2);

			passed &= (args.args[0] == 15);

			passed &= (args.args[1] == 16);

			break;

		default:

			passed = false;

		}

		selftest(passed, "index %i - data error on node %s rc=%i\n",

			 i, args.np->full_name, rc);

	}

	of_node_put(np);

}



static int __init of_selftest(void)

{

	struct device_node *np;
@@ -168,7 +245,9 @@ static int __init of_selftest(void) 
	pr_info("start of selftest - you will see error messages\n");

	of_selftest_parse_phandle_with_args();

	of_selftest_property_match_string();

	pr_info("end of selftest - %s\n", selftest_passed ? "PASS" : "FAIL");

	of_selftest_parse_interrupts();

	pr_info("end of selftest - %i passed, %i failed\n",

		selftest_results.passed, selftest_results.failed);

	return 0;

}

late_initcall(of_selftest);