mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 15:30:54 +07:00
79d9701559
The standard interrupts property in device tree can only handle interrupts coming from a single interrupt parent. If a device is wired to multiple interrupt controllers, then it needs to be attached to a node with an interrupt-map property to demux the interrupt specifiers which is confusing. It would be a lot easier if there was a form of the interrupts property that allows for a separate interrupt phandle for each interrupt specifier. This patch does exactly that by creating a new interrupts-extended property which reuses the phandle+arguments pattern used by GPIOs and other core bindings. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Kumar Gala <galak@codeaurora.org> [grant.likely: removed versatile platform hunks into separate patch] Cc: Rob Herring <rob.herring@calxeda.com>
324 lines
8.4 KiB
C
324 lines
8.4 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 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();
|
|
pr_info("end of selftest - %i passed, %i failed\n",
|
|
selftest_results.passed, selftest_results.failed);
|
|
return 0;
|
|
}
|
|
late_initcall(of_selftest);
|