mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 15:10:50 +07:00
1f42e5dd50
Adds a selftest function for the of_match_node function. of_match_node is supposed to handle precedence for the compatible property as well as the name and device_type values. This patch adds some test case data and a function that makes sure each test node matches against the correct entry of an of_device_id table. This code was written to verify the new of_match_node() implementation that is an earlier part of this series. Signed-off-by: Grant Likely <grant.likely@linaro.org> Cc: Kevin Hao <haokexin@gmail.com>
391 lines
11 KiB
C
391 lines
11 KiB
C
/*
|
|
* Self tests for device tree subsystem
|
|
*/
|
|
|
|
#define pr_fmt(fmt) "### dt-test ### " fmt
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/err.h>
|
|
#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 struct selftest_results {
|
|
int passed;
|
|
int failed;
|
|
} selftest_results;
|
|
|
|
#define selftest(result, fmt, ...) { \
|
|
if (!(result)) { \
|
|
selftest_results.failed++; \
|
|
pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
|
|
} else { \
|
|
selftest_results.passed++; \
|
|
pr_debug("pass %s():%i\n", __func__, __LINE__); \
|
|
} \
|
|
}
|
|
|
|
static void __init of_selftest_parse_phandle_with_args(void)
|
|
{
|
|
struct device_node *np;
|
|
struct of_phandle_args args;
|
|
int i, rc;
|
|
|
|
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
|
|
if (!np) {
|
|
pr_err("missing testcase data\n");
|
|
return;
|
|
}
|
|
|
|
rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
|
|
selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
bool passed = true;
|
|
rc = of_parse_phandle_with_args(np, "phandle-list",
|
|
"#phandle-cells", i, &args);
|
|
|
|
/* Test the values from tests-phandle.dtsi */
|
|
switch (i) {
|
|
case 0:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 1);
|
|
passed &= (args.args[0] == (i + 1));
|
|
break;
|
|
case 1:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 2);
|
|
passed &= (args.args[0] == (i + 1));
|
|
passed &= (args.args[1] == 0);
|
|
break;
|
|
case 2:
|
|
passed &= (rc == -ENOENT);
|
|
break;
|
|
case 3:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 3);
|
|
passed &= (args.args[0] == (i + 1));
|
|
passed &= (args.args[1] == 4);
|
|
passed &= (args.args[2] == 3);
|
|
break;
|
|
case 4:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 2);
|
|
passed &= (args.args[0] == (i + 1));
|
|
passed &= (args.args[1] == 100);
|
|
break;
|
|
case 5:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 0);
|
|
break;
|
|
case 6:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 1);
|
|
passed &= (args.args[0] == (i + 1));
|
|
break;
|
|
case 7:
|
|
passed &= (rc == -ENOENT);
|
|
break;
|
|
default:
|
|
passed = false;
|
|
}
|
|
|
|
selftest(passed, "index %i - data error on node %s rc=%i\n",
|
|
i, args.np->full_name, rc);
|
|
}
|
|
|
|
/* Check for missing list property */
|
|
rc = of_parse_phandle_with_args(np, "phandle-list-missing",
|
|
"#phandle-cells", 0, &args);
|
|
selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
|
|
rc = of_count_phandle_with_args(np, "phandle-list-missing",
|
|
"#phandle-cells");
|
|
selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
|
|
|
|
/* Check for missing cells property */
|
|
rc = of_parse_phandle_with_args(np, "phandle-list",
|
|
"#phandle-cells-missing", 0, &args);
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
rc = of_count_phandle_with_args(np, "phandle-list",
|
|
"#phandle-cells-missing");
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
|
|
/* Check for bad phandle in list */
|
|
rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
|
|
"#phandle-cells", 0, &args);
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
|
|
"#phandle-cells");
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
|
|
/* Check for incorrectly formed argument list */
|
|
rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
|
|
"#phandle-cells", 1, &args);
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
|
|
"#phandle-cells");
|
|
selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
|
|
}
|
|
|
|
static void __init of_selftest_property_match_string(void)
|
|
{
|
|
struct device_node *np;
|
|
int rc;
|
|
|
|
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
|
|
if (!np) {
|
|
pr_err("No testcase data in device tree\n");
|
|
return;
|
|
}
|
|
|
|
rc = of_property_match_string(np, "phandle-list-names", "first");
|
|
selftest(rc == 0, "first expected:0 got:%i\n", rc);
|
|
rc = of_property_match_string(np, "phandle-list-names", "second");
|
|
selftest(rc == 1, "second expected:0 got:%i\n", rc);
|
|
rc = of_property_match_string(np, "phandle-list-names", "third");
|
|
selftest(rc == 2, "third expected:0 got:%i\n", rc);
|
|
rc = of_property_match_string(np, "phandle-list-names", "fourth");
|
|
selftest(rc == -ENODATA, "unmatched string; rc=%i", rc);
|
|
rc = of_property_match_string(np, "missing-property", "blah");
|
|
selftest(rc == -EINVAL, "missing property; rc=%i", rc);
|
|
rc = of_property_match_string(np, "empty-property", "blah");
|
|
selftest(rc == -ENODATA, "empty property; rc=%i", rc);
|
|
rc = of_property_match_string(np, "unterminated-string", "blah");
|
|
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 void __init of_selftest_parse_interrupts_extended(void)
|
|
{
|
|
struct device_node *np;
|
|
struct of_phandle_args args;
|
|
int i, rc;
|
|
|
|
np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
|
|
if (!np) {
|
|
pr_err("missing testcase data\n");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < 7; i++) {
|
|
bool passed = true;
|
|
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] == 1);
|
|
break;
|
|
case 1:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 3);
|
|
passed &= (args.args[0] == 2);
|
|
passed &= (args.args[1] == 3);
|
|
passed &= (args.args[2] == 4);
|
|
break;
|
|
case 2:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 2);
|
|
passed &= (args.args[0] == 5);
|
|
passed &= (args.args[1] == 6);
|
|
break;
|
|
case 3:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 1);
|
|
passed &= (args.args[0] == 9);
|
|
break;
|
|
case 4:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 3);
|
|
passed &= (args.args[0] == 10);
|
|
passed &= (args.args[1] == 11);
|
|
passed &= (args.args[2] == 12);
|
|
break;
|
|
case 5:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 2);
|
|
passed &= (args.args[0] == 13);
|
|
passed &= (args.args[1] == 14);
|
|
break;
|
|
case 6:
|
|
passed &= !rc;
|
|
passed &= (args.args_count == 1);
|
|
passed &= (args.args[0] == 15);
|
|
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 struct of_device_id match_node_table[] = {
|
|
{ .data = "A", .name = "name0", }, /* Name alone is lowest priority */
|
|
{ .data = "B", .type = "type1", }, /* followed by type alone */
|
|
|
|
{ .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
|
|
{ .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
|
|
{ .data = "Cc", .name = "name2", .type = "type2", },
|
|
|
|
{ .data = "E", .compatible = "compat3" },
|
|
{ .data = "G", .compatible = "compat2", },
|
|
{ .data = "H", .compatible = "compat2", .name = "name5", },
|
|
{ .data = "I", .compatible = "compat2", .type = "type1", },
|
|
{ .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
|
|
{ .data = "K", .compatible = "compat2", .name = "name9", },
|
|
{}
|
|
};
|
|
|
|
static struct {
|
|
const char *path;
|
|
const char *data;
|
|
} match_node_tests[] = {
|
|
{ .path = "/testcase-data/match-node/name0", .data = "A", },
|
|
{ .path = "/testcase-data/match-node/name1", .data = "B", },
|
|
{ .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
|
|
{ .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
|
|
{ .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
|
|
{ .path = "/testcase-data/match-node/name3", .data = "E", },
|
|
{ .path = "/testcase-data/match-node/name4", .data = "G", },
|
|
{ .path = "/testcase-data/match-node/name5", .data = "H", },
|
|
{ .path = "/testcase-data/match-node/name6", .data = "G", },
|
|
{ .path = "/testcase-data/match-node/name7", .data = "I", },
|
|
{ .path = "/testcase-data/match-node/name8", .data = "J", },
|
|
{ .path = "/testcase-data/match-node/name9", .data = "K", },
|
|
};
|
|
|
|
static void __init of_selftest_match_node(void)
|
|
{
|
|
struct device_node *np;
|
|
const struct of_device_id *match;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
|
|
np = of_find_node_by_path(match_node_tests[i].path);
|
|
if (!np) {
|
|
selftest(0, "missing testcase node %s\n",
|
|
match_node_tests[i].path);
|
|
continue;
|
|
}
|
|
|
|
match = of_match_node(match_node_table, np);
|
|
if (!match) {
|
|
selftest(0, "%s didn't match anything\n",
|
|
match_node_tests[i].path);
|
|
continue;
|
|
}
|
|
|
|
if (strcmp(match->data, match_node_tests[i].data) != 0) {
|
|
selftest(0, "%s got wrong match. expected %s, got %s\n",
|
|
match_node_tests[i].path, match_node_tests[i].data,
|
|
(const char *)match->data);
|
|
continue;
|
|
}
|
|
selftest(1, "passed");
|
|
}
|
|
}
|
|
|
|
static int __init of_selftest(void)
|
|
{
|
|
struct device_node *np;
|
|
|
|
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
|
|
if (!np) {
|
|
pr_info("No testcase data in device tree; not running tests\n");
|
|
return 0;
|
|
}
|
|
of_node_put(np);
|
|
|
|
pr_info("start of selftest - you will see error messages\n");
|
|
of_selftest_parse_phandle_with_args();
|
|
of_selftest_property_match_string();
|
|
of_selftest_parse_interrupts();
|
|
of_selftest_parse_interrupts_extended();
|
|
of_selftest_match_node();
|
|
pr_info("end of selftest - %i passed, %i failed\n",
|
|
selftest_results.passed, selftest_results.failed);
|
|
return 0;
|
|
}
|
|
late_initcall(of_selftest);
|