// SPDX-License-Identifier: GPL-2.0
/*
* Self tests for device tree subsystem
*/
#define pr_fmt(fmt) "### dt-test ### " fmt
#include <linux/memblock.h>
#include <linux/clk.h>
#include <linux/dma-direct.h> /* to test phys_to_dma/dma_to_phys */
#include <linux/err.h>
#include <linux/errno.h>
#include <linux/hashtable.h>
#include <linux/libfdt.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/i2c-mux.h>
#include <linux/gpio/driver.h>
#include <linux/bitops.h>
#include "of_private.h"
static struct unittest_results {
int passed;
int failed;
} unittest_results;
#define unittest(result, fmt, ...) ({ \
bool failed = !(result); \
if (failed) { \
unittest_results.failed++; \
pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ## __VA_ARGS__); \
} else { \
unittest_results.passed++; \
pr_info("pass %s():%i\n" , __func__, __LINE__); \
} \
failed; \
})
#ifdef CONFIG_OF_KOBJ
#define OF_KREF_READ(NODE) kref_read(&(NODE)->kobj.kref)
#else
#define OF_KREF_READ(NODE) 1
#endif
/*
* Expected message may have a message level other than KERN_INFO .
* Print the expected message only if the current loglevel will allow
* the actual message to print .
*
* Do not use EXPECT_BEGIN ( ) , EXPECT_END ( ) , EXPECT_NOT_BEGIN ( ) , or
* EXPECT_NOT_END ( ) to report messages expected to be reported or not
* reported by pr_debug ( ) .
*/
#define EXPECT_BEGIN(level, fmt, ...) \
printk(level pr_fmt("EXPECT \\ : " ) fmt, ## __VA_ARGS__)
#define EXPECT_END(level, fmt, ...) \
printk(level pr_fmt("EXPECT / : " ) fmt, ## __VA_ARGS__)
#define EXPECT_NOT_BEGIN(level, fmt, ...) \
printk(level pr_fmt("EXPECT_NOT \\ : " ) fmt, ## __VA_ARGS__)
#define EXPECT_NOT_END(level, fmt, ...) \
printk(level pr_fmt("EXPECT_NOT / : " ) fmt, ## __VA_ARGS__)
static void __init of_unittest_find_node_by_name(void )
{
struct device_node *np;
const char *options, *name;
np = of_find_node_by_path("/testcase-data" );
name = kasprintf(GFP_KERNEL, "%pOF" , np);
unittest(np && name && !strcmp("/testcase-data" , name),
"find /testcase-data failed\n" );
of_node_put(np);
kfree(name);
/* Test if trailing '/' works */
np = of_find_node_by_path("/testcase-data/" );
unittest(!np, "trailing '/' on /testcase-data/ should fail\n" );
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a" );
name = kasprintf(GFP_KERNEL, "%pOF" , np);
unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a" , name),
"find /testcase-data/phandle-tests/consumer-a failed\n" );
of_node_put(np);
kfree(name);
np = of_find_node_by_path("testcase-alias" );
name = kasprintf(GFP_KERNEL, "%pOF" , np);
unittest(np && name && !strcmp("/testcase-data" , name),
"find testcase-alias failed\n" );
of_node_put(np);
kfree(name);
/* Test if trailing '/' works on aliases */
np = of_find_node_by_path("testcase-alias/" );
unittest(!np, "trailing '/' on testcase-alias/ should fail\n" );
np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a" );
name = kasprintf(GFP_KERNEL, "%pOF" , np);
unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a" , name),
"find testcase-alias/phandle-tests/consumer-a failed\n" );
of_node_put(np);
kfree(name);
np = of_find_node_by_path("/testcase-data/missing-path" );
unittest(!np, "non-existent path returned node %pOF\n" , np);
of_node_put(np);
np = of_find_node_by_path("missing-alias" );
unittest(!np, "non-existent alias returned node %pOF\n" , np);
of_node_put(np);
np = of_find_node_by_path("testcase-alias/missing-path" );
unittest(!np, "non-existent alias with relative path returned node %pOF\n" , np);
of_node_put(np);
np = of_find_node_opts_by_path("/testcase-data:testoption" , &options);
unittest(np && !strcmp("testoption" , options),
"option path test failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("/testcase-data:test/option" , &options);
unittest(np && !strcmp("test/option" , options),
"option path test, subcase #1 failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("/testcase-data/testcase-device1:test/option" , &options);
unittest(np && !strcmp("test/option" , options),
"option path test, subcase #2 failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("/testcase-data:testoption" , NULL);
unittest(np, "NULL option path test failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("testcase-alias:testaliasoption" ,
&options);
unittest(np && !strcmp("testaliasoption" , options),
"option alias path test failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("testcase-alias:test/alias/option" ,
&options);
unittest(np && !strcmp("test/alias/option" , options),
"option alias path test, subcase #1 failed\n" );
of_node_put(np);
np = of_find_node_opts_by_path("testcase-alias/phandle-tests/consumer-a:testaliasoption" ,
&options);
name = kasprintf(GFP_KERNEL, "%pOF" , np);
unittest(np && name && !strcmp("/testcase-data/phandle-tests/consumer-a" , name) &&
!strcmp("testaliasoption" , options),
"option alias path test, subcase #2 failed\n" );
of_node_put(np);
kfree(name);
np = of_find_node_opts_by_path("testcase-alias:testaliasoption" , NULL);
unittest(np, "NULL option alias path test failed\n" );
of_node_put(np);
options = "testoption" ;
np = of_find_node_opts_by_path("testcase-alias" , &options);
unittest(np && !options, "option clearing test failed\n" );
of_node_put(np);
options = "testoption" ;
np = of_find_node_opts_by_path("/" , &options);
unittest(np && !options, "option clearing root node test failed\n" );
of_node_put(np);
}
static void __init of_unittest_dynamic(void )
{
struct device_node *np;
struct property *prop;
np = of_find_node_by_path("/testcase-data" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
/* Array of 4 properties for the purpose of testing */
prop = kcalloc(4 , sizeof (*prop), GFP_KERNEL);
if (!prop) {
unittest(0 , "kzalloc() failed\n" );
return ;
}
/* Add a new property - should pass*/
prop->name = "new-property" ;
prop->value = "new-property-data" ;
prop->length = strlen(prop->value) + 1 ;
unittest(of_add_property(np, prop) == 0 , "Adding a new property failed\n" );
/* Try to add an existing property - should fail */
prop++;
prop->name = "new-property" ;
prop->value = "new-property-data-should-fail" ;
prop->length = strlen(prop->value) + 1 ;
unittest(of_add_property(np, prop) != 0 ,
"Adding an existing property should have failed\n" );
/* Try to modify an existing property - should pass */
prop->value = "modify-property-data-should-pass" ;
prop->length = strlen(prop->value) + 1 ;
unittest(of_update_property(np, prop) == 0 ,
"Updating an existing property should have passed\n" );
/* Try to modify non-existent property - should pass*/
prop++;
prop->name = "modify-property" ;
prop->value = "modify-missing-property-data-should-pass" ;
prop->length = strlen(prop->value) + 1 ;
unittest(of_update_property(np, prop) == 0 ,
"Updating a missing property should have passed\n" );
/* Remove property - should pass */
unittest(of_remove_property(np, prop) == 0 ,
"Removing a property should have passed\n" );
/* Adding very large property - should pass */
prop++;
prop->name = "large-property-PAGE_SIZEx8" ;
prop->length = PAGE_SIZE * 8 ;
prop->value = kzalloc(prop->length, GFP_KERNEL);
unittest(prop->value != NULL, "Unable to allocate large buffer\n" );
if (prop->value)
unittest(of_add_property(np, prop) == 0 ,
"Adding a large property should have passed\n" );
}
static int __init of_unittest_check_node_linkage(struct device_node *np)
{
int count = 0 , rc;
for_each_child_of_node_scoped(np, child) {
if (child->parent != np) {
pr_err("Child node %pOFn links to wrong parent %pOFn\n" ,
child, np);
return -EINVAL;
}
rc = of_unittest_check_node_linkage(child);
if (rc < 0 )
return rc;
count += rc;
}
return count + 1 ;
}
static void __init of_unittest_check_tree_linkage(void )
{
struct device_node *np;
int allnode_count = 0 , child_count;
if (!of_root)
return ;
for_each_of_allnodes(np)
allnode_count++;
child_count = of_unittest_check_node_linkage(of_root);
unittest(child_count > 0 , "Device node data structure is corrupted\n" );
unittest(child_count == allnode_count,
"allnodes list size (%i) doesn't match sibling lists size (%i)\n" ,
allnode_count, child_count);
pr_debug("allnodes list size (%i); sibling lists size (%i)\n" , allnode_count, child_count);
}
static void __init of_unittest_printf_one(struct device_node *np, const char *fmt,
const char *expected)
{
unsigned char *buf;
int buf_size;
int size, i;
buf_size = strlen(expected) + 10 ;
buf = kmalloc(buf_size, GFP_KERNEL);
if (!buf)
return ;
/* Baseline; check conversion with a large size limit */
memset(buf, 0 xff, buf_size);
size = snprintf(buf, buf_size - 2 , fmt, np);
/* use strcmp() instead of strncmp() here to be absolutely sure strings match */
unittest((strcmp(buf, expected) == 0 ) && (buf[size+1 ] == 0 xff),
"sprintf failed; fmt='%s' expected='%s' rslt='%s'\n" ,
fmt, expected, buf);
/* Make sure length limits work */
size++;
for (i = 0 ; i < 2 ; i++, size--) {
/* Clear the buffer, and make sure it works correctly still */
memset(buf, 0 xff, buf_size);
snprintf(buf, size+1 , fmt, np);
unittest(strncmp(buf, expected, size) == 0 && (buf[size+1 ] == 0 xff),
"snprintf failed; size=%i fmt='%s' expected='%s' rslt='%s'\n" ,
size, fmt, expected, buf);
}
kfree(buf);
}
static void __init of_unittest_printf(void )
{
struct device_node *np;
const char *full_name = "/testcase-data/platform-tests/test-device@1/dev@100" ;
char phandle_str[16 ] = "" ;
np = of_find_node_by_path(full_name);
if (!np) {
unittest(np, "testcase data missing\n" );
return ;
}
num_to_str(phandle_str, sizeof (phandle_str), np->phandle, 0 );
of_unittest_printf_one(np, "%pOF" , full_name);
of_unittest_printf_one(np, "%pOFf" , full_name);
of_unittest_printf_one(np, "%pOFn" , "dev" );
of_unittest_printf_one(np, "%2pOFn" , "dev" );
of_unittest_printf_one(np, "%5pOFn" , " dev" );
of_unittest_printf_one(np, "%pOFnc" , "dev:test-sub-device" );
of_unittest_printf_one(np, "%pOFp" , phandle_str);
of_unittest_printf_one(np, "%pOFP" , "dev@100" );
of_unittest_printf_one(np, "ABC %pOFP ABC" , "ABC dev@100 ABC" );
of_unittest_printf_one(np, "%10pOFP" , " dev@100" );
of_unittest_printf_one(np, "%-10pOFP" , "dev@100 " );
of_unittest_printf_one(of_root, "%pOFP" , "/" );
of_unittest_printf_one(np, "%pOFF" , "----" );
of_unittest_printf_one(np, "%pOFPF" , "dev@100:----" );
of_unittest_printf_one(np, "%pOFPFPc" , "dev@100:----:dev@100:test-sub-device" );
of_unittest_printf_one(np, "%pOFc" , "test-sub-device" );
of_unittest_printf_one(np, "%pOFC" ,
"\" test-sub-device\",\" test-compat2\",\" test-compat3\"" );
}
struct node_hash {
struct hlist_node node;
struct device_node *np;
};
static DEFINE_HASHTABLE(phandle_ht, 8 );
static void __init of_unittest_check_phandles(void )
{
struct device_node *np;
struct node_hash *nh;
struct hlist_node *tmp;
int i, dup_count = 0 , phandle_count = 0 ;
for_each_of_allnodes(np) {
if (!np->phandle)
continue ;
hash_for_each_possible(phandle_ht, nh, node, np->phandle) {
if (nh->np->phandle == np->phandle) {
pr_info("Duplicate phandle! %i used by %pOF and %pOF\n" ,
np->phandle, nh->np, np);
dup_count++;
break ;
}
}
nh = kzalloc(sizeof (*nh), GFP_KERNEL);
if (!nh)
return ;
nh->np = np;
hash_add(phandle_ht, &nh->node, np->phandle);
phandle_count++;
}
unittest(dup_count == 0 , "Found %i duplicates in %i phandles\n" ,
dup_count, phandle_count);
/* Clean up */
hash_for_each_safe(phandle_ht, i, tmp, nh, node) {
hash_del(&nh->node);
kfree(nh);
}
}
static void __init of_unittest_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" );
unittest(rc == 7 , "of_count_phandle_with_args() returned %i, expected 7\n" , rc);
for (i = 0 ; i < 8 ; i++) {
bool passed = true ;
memset(&args, 0 , sizeof (args));
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 ;
}
unittest(passed, "index %i - data error on node %pOF rc=%i\n" ,
i, args.np, rc);
if (rc == 0 )
of_node_put(args.np);
}
/* Check for missing list property */
memset(&args, 0 , sizeof (args));
rc = of_parse_phandle_with_args(np, "phandle-list-missing" ,
"#phandle-cells" , 0 , &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n" , -ENOENT, rc);
rc = of_count_phandle_with_args(np, "phandle-list-missing" ,
"#phandle-cells" );
unittest(rc == -ENOENT, "expected:%i got:%i\n" , -ENOENT, rc);
/* Check for missing cells property */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1" );
rc = of_parse_phandle_with_args(np, "phandle-list" ,
"#phandle-cells-missing" , 0 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1" );
rc = of_count_phandle_with_args(np, "phandle-list" ,
"#phandle-cells-missing" );
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not get #phandle-cells-missing for /testcase-data/phandle-tests/provider1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
/* Check for bad phandle in list */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not find phandle" );
rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle" ,
"#phandle-cells" , 0 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not find phandle" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not find phandle" );
rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle" ,
"#phandle-cells" );
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: could not find phandle" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
/* Check for incorrectly formed argument list */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1" );
rc = of_parse_phandle_with_args(np, "phandle-list-bad-args" ,
"#phandle-cells" , 1 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1" );
rc = of_count_phandle_with_args(np, "phandle-list-bad-args" ,
"#phandle-cells" );
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-a: #phandle-cells = 3 found 1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
}
static void __init of_unittest_parse_phandle_with_args_map(void )
{
struct device_node *np, *p[6 ] = {};
struct of_phandle_args args;
unsigned int prefs[6 ];
int i, rc;
np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-b" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
p[0 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider0" );
p[1 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider1" );
p[2 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider2" );
p[3 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider3" );
p[4 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider4" );
p[5 ] = of_find_node_by_path("/testcase-data/phandle-tests/provider5" );
for (i = 0 ; i < ARRAY_SIZE(p); ++i) {
if (!p[i]) {
pr_err("missing testcase data\n" );
return ;
}
prefs[i] = OF_KREF_READ(p[i]);
}
rc = of_count_phandle_with_args(np, "phandle-list" , "#phandle-cells" );
unittest(rc == 8 , "of_count_phandle_with_args() returned %i, expected 8\n" , rc);
for (i = 0 ; i < 9 ; i++) {
bool passed = true ;
memset(&args, 0 , sizeof (args));
rc = of_parse_phandle_with_args_map(np, "phandle-list" ,
"phandle" , i, &args);
/* Test the values from tests-phandle.dtsi */
switch (i) {
case 0 :
passed &= !rc;
passed &= (args.np == p[1 ]);
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == 1 );
break ;
case 1 :
passed &= !rc;
passed &= (args.np == p[3 ]);
passed &= (args.args_count == 3 );
passed &= (args.args[0 ] == 2 );
passed &= (args.args[1 ] == 5 );
passed &= (args.args[2 ] == 3 );
break ;
case 2 :
passed &= (rc == -ENOENT);
break ;
case 3 :
passed &= !rc;
passed &= (args.np == p[0 ]);
passed &= (args.args_count == 0 );
break ;
case 4 :
passed &= !rc;
passed &= (args.np == p[1 ]);
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == 3 );
break ;
case 5 :
passed &= !rc;
passed &= (args.np == p[0 ]);
passed &= (args.args_count == 0 );
break ;
case 6 :
passed &= !rc;
passed &= (args.np == p[2 ]);
passed &= (args.args_count == 2 );
passed &= (args.args[0 ] == 15 );
passed &= (args.args[1 ] == 0 x20);
break ;
case 7 :
passed &= !rc;
passed &= (args.np == p[3 ]);
passed &= (args.args_count == 3 );
passed &= (args.args[0 ] == 2 );
passed &= (args.args[1 ] == 5 );
passed &= (args.args[2 ] == 3 );
break ;
case 8 :
passed &= (rc == -ENOENT);
break ;
default :
passed = false ;
}
unittest(passed, "index %i - data error on node %s rc=%i\n" ,
i, args.np->full_name, rc);
if (rc == 0 )
of_node_put(args.np);
}
/* Check for missing list property */
memset(&args, 0 , sizeof (args));
rc = of_parse_phandle_with_args_map(np, "phandle-list-missing" ,
"phandle" , 0 , &args);
unittest(rc == -ENOENT, "expected:%i got:%i\n" , -ENOENT, rc);
/* Check for missing cells,map,mask property */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1" );
rc = of_parse_phandle_with_args_map(np, "phandle-list" ,
"phandle-missing" , 0 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: could not get #phandle-missing-cells for /testcase-data/phandle-tests/provider1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
/* Check for bad phandle in list */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678" );
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-phandle" ,
"phandle" , 0 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: could not find phandle 12345678" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
/* Check for incorrectly formed argument list */
memset(&args, 0 , sizeof (args));
EXPECT_BEGIN(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1" );
rc = of_parse_phandle_with_args_map(np, "phandle-list-bad-args" ,
"phandle" , 1 , &args);
EXPECT_END(KERN_INFO,
"OF: /testcase-data/phandle-tests/consumer-b: #phandle-cells = 2 found 1" );
unittest(rc == -EINVAL, "expected:%i got:%i\n" , -EINVAL, rc);
for (i = 0 ; i < ARRAY_SIZE(p); ++i) {
unittest(prefs[i] == OF_KREF_READ(p[i]),
"provider%d: expected:%d got:%d\n" ,
i, prefs[i], OF_KREF_READ(p[i]));
of_node_put(p[i]);
}
}
static void __init of_unittest_property_string(void )
{
const char *strings[4 ];
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" );
unittest(rc == 0 , "first expected:0 got:%i\n" , rc);
rc = of_property_match_string(np, "phandle-list-names" , "second" );
unittest(rc == 1 , "second expected:1 got:%i\n" , rc);
rc = of_property_match_string(np, "phandle-list-names" , "third" );
unittest(rc == 2 , "third expected:2 got:%i\n" , rc);
rc = of_property_match_string(np, "phandle-list-names" , "fourth" );
unittest(rc == -ENODATA, "unmatched string; rc=%i\n" , rc);
rc = of_property_match_string(np, "missing-property" , "blah" );
unittest(rc == -EINVAL, "missing property; rc=%i\n" , rc);
rc = of_property_match_string(np, "empty-property" , "blah" );
unittest(rc == -ENODATA, "empty property; rc=%i\n" , rc);
rc = of_property_match_string(np, "unterminated-string" , "blah" );
unittest(rc == -EILSEQ, "unterminated string; rc=%i\n" , rc);
/* of_property_count_strings() tests */
rc = of_property_count_strings(np, "string-property" );
unittest(rc == 1 , "Incorrect string count; rc=%i\n" , rc);
rc = of_property_count_strings(np, "phandle-list-names" );
unittest(rc == 3 , "Incorrect string count; rc=%i\n" , rc);
rc = of_property_count_strings(np, "unterminated-string" );
unittest(rc == -EILSEQ, "unterminated string; rc=%i\n" , rc);
rc = of_property_count_strings(np, "unterminated-string-list" );
unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n" , rc);
/* of_property_read_string_index() tests */
rc = of_property_read_string_index(np, "string-property" , 0 , strings);
unittest(rc == 0 && !strcmp(strings[0 ], "foobar" ), "of_property_read_string_index() failure; rc=%i\n" , rc);
strings[0 ] = NULL;
rc = of_property_read_string_index(np, "string-property" , 1 , strings);
unittest(rc == -ENODATA && strings[0 ] == NULL, "of_property_read_string_index() failure; rc=%i\n" , rc);
rc = of_property_read_string_index(np, "phandle-list-names" , 0 , strings);
unittest(rc == 0 && !strcmp(strings[0 ], "first" ), "of_property_read_string_index() failure; rc=%i\n" , rc);
rc = of_property_read_string_index(np, "phandle-list-names" , 1 , strings);
unittest(rc == 0 && !strcmp(strings[0 ], "second" ), "of_property_read_string_index() failure; rc=%i\n" , rc);
rc = of_property_read_string_index(np, "phandle-list-names" , 2 , strings);
unittest(rc == 0 && !strcmp(strings[0 ], "third" ), "of_property_read_string_index() failure; rc=%i\n" , rc);
strings[0 ] = NULL;
rc = of_property_read_string_index(np, "phandle-list-names" , 3 , strings);
unittest(rc == -ENODATA && strings[0 ] == NULL, "of_property_read_string_index() failure; rc=%i\n" , rc);
strings[0 ] = NULL;
rc = of_property_read_string_index(np, "unterminated-string" , 0 , strings);
unittest(rc == -EILSEQ && strings[0 ] == NULL, "of_property_read_string_index() failure; rc=%i\n" , rc);
rc = of_property_read_string_index(np, "unterminated-string-list" , 0 , strings);
unittest(rc == 0 && !strcmp(strings[0 ], "first" ), "of_property_read_string_index() failure; rc=%i\n" , rc);
strings[0 ] = NULL;
rc = of_property_read_string_index(np, "unterminated-string-list" , 2 , strings); /* should fail */
unittest(rc == -EILSEQ && strings[0 ] == NULL, "of_property_read_string_index() failure; rc=%i\n" , rc);
strings[1 ] = NULL;
/* of_property_read_string_array() tests */
rc = of_property_read_string_array(np, "string-property" , strings, 4 );
unittest(rc == 1 , "Incorrect string count; rc=%i\n" , rc);
rc = of_property_read_string_array(np, "phandle-list-names" , strings, 4 );
unittest(rc == 3 , "Incorrect string count; rc=%i\n" , rc);
rc = of_property_read_string_array(np, "unterminated-string" , strings, 4 );
unittest(rc == -EILSEQ, "unterminated string; rc=%i\n" , rc);
/* -- An incorrectly formed string should cause a failure */
rc = of_property_read_string_array(np, "unterminated-string-list" , strings, 4 );
unittest(rc == -EILSEQ, "unterminated string array; rc=%i\n" , rc);
/* -- parsing the correctly formed strings should still work: */
strings[2 ] = NULL;
rc = of_property_read_string_array(np, "unterminated-string-list" , strings, 2 );
unittest(rc == 2 && strings[2 ] == NULL, "of_property_read_string_array() failure; rc=%i\n" , rc);
strings[1 ] = NULL;
rc = of_property_read_string_array(np, "phandle-list-names" , strings, 1 );
unittest(rc == 1 && strings[1 ] == NULL, "Overwrote end of string array; rc=%i, str='%s'\n" , rc, strings[1 ]);
}
#define propcmp(p1, p2) (((p1)->length == (p2)->length) && \
(p1)->value && (p2)->value && \
!memcmp((p1)->value, (p2)->value, (p1)->length) && \
!strcmp((p1)->name, (p2)->name))
static void __init of_unittest_property_copy(void )
{
#ifdef CONFIG_OF_DYNAMIC
struct property p1 = { .name = "p1" , .length = 0 , .value = "" };
struct property p2 = { .name = "p2" , .length = 5 , .value = "abcd" };
struct property *new ;
new = __of_prop_dup(&p1, GFP_KERNEL);
unittest(new && propcmp(&p1, new ), "empty property didn't copy correctly\n" );
__of_prop_free(new );
new = __of_prop_dup(&p2, GFP_KERNEL);
unittest(new && propcmp(&p2, new ), "non-empty property didn't copy correctly\n" );
__of_prop_free(new );
#endif
}
static void __init of_unittest_changeset(void )
{
#ifdef CONFIG_OF_DYNAMIC
int ret;
struct property *ppadd, padd = { .name = "prop-add" , .length = 1 , .value = "" };
struct property *ppname_n1, pname_n1 = { .name = "name" , .length = 3 , .value = "n1" };
struct property *ppname_n2, pname_n2 = { .name = "name" , .length = 3 , .value = "n2" };
struct property *ppname_n21, pname_n21 = { .name = "name" , .length = 3 , .value = "n21" };
struct property *ppupdate, pupdate = { .name = "prop-update" , .length = 5 , .value = "abcd" };
struct property *ppremove;
struct device_node *n1, *n2, *n21, *n22, *nchangeset, *nremove, *parent, *np;
static const char * const str_array[] = { "str1" , "str2" , "str3" };
const u32 u32_array[] = { 1 , 2 , 3 };
struct of_changeset chgset;
const char *propstr = NULL;
n1 = __of_node_dup(NULL, "n1" );
unittest(n1, "testcase setup failure\n" );
n2 = __of_node_dup(NULL, "n2" );
unittest(n2, "testcase setup failure\n" );
n21 = __of_node_dup(NULL, "n21" );
unittest(n21, "testcase setup failure %p\n" , n21);
nchangeset = of_find_node_by_path("/testcase-data/changeset" );
nremove = of_get_child_by_name(nchangeset, "node-remove" );
unittest(nremove, "testcase setup failure\n" );
ppadd = __of_prop_dup(&padd, GFP_KERNEL);
unittest(ppadd, "testcase setup failure\n" );
ppname_n1 = __of_prop_dup(&pname_n1, GFP_KERNEL);
unittest(ppname_n1, "testcase setup failure\n" );
ppname_n2 = __of_prop_dup(&pname_n2, GFP_KERNEL);
unittest(ppname_n2, "testcase setup failure\n" );
ppname_n21 = __of_prop_dup(&pname_n21, GFP_KERNEL);
unittest(ppname_n21, "testcase setup failure\n" );
ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
unittest(ppupdate, "testcase setup failure\n" );
parent = nchangeset;
n1->parent = parent;
n2->parent = parent;
n21->parent = n2;
ppremove = of_find_property(parent, "prop-remove" , NULL);
unittest(ppremove, "failed to find removal prop" );
of_changeset_init(&chgset);
unittest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n" );
unittest(!of_changeset_add_property(&chgset, n1, ppname_n1), "fail add prop name\n" );
unittest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n" );
unittest(!of_changeset_add_property(&chgset, n2, ppname_n2), "fail add prop name\n" );
unittest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n" );
unittest(!of_changeset_add_property(&chgset, n21, ppname_n21), "fail add prop name\n" );
unittest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n" );
unittest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop prop-add\n" );
unittest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n" );
unittest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n" );
n22 = of_changeset_create_node(&chgset, n2, "n22" );
unittest(n22, "fail create n22\n" );
unittest(!of_changeset_add_prop_string(&chgset, n22, "prop-str" , "abcd" ),
"fail add prop prop-str" );
unittest(!of_changeset_add_prop_string_array(&chgset, n22, "prop-str-array" ,
(const char **)str_array,
ARRAY_SIZE(str_array)),
"fail add prop prop-str-array" );
unittest(!of_changeset_add_prop_u32_array(&chgset, n22, "prop-u32-array" ,
u32_array, ARRAY_SIZE(u32_array)),
"fail add prop prop-u32-array" );
unittest(!of_changeset_apply(&chgset), "apply failed\n" );
of_node_put(nchangeset);
/* Make sure node names are constructed correctly */
unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n21" )),
"'%pOF' not added\n" , n21);
of_node_put(np);
unittest((np = of_find_node_by_path("/testcase-data/changeset/n2/n22" )),
"'%pOF' not added\n" , n22);
of_node_put(np);
unittest(!of_changeset_revert(&chgset), "revert failed\n" );
unittest(!of_find_node_by_path("/testcase-data/changeset/n2/n21" ),
"'%pOF' still present after revert\n" , n21);
unittest(of_property_present(parent, "prop-remove" ),
"failed to find removed prop after revert\n" );
ret = of_property_read_string(parent, "prop-update" , &propstr);
unittest(!ret, "failed to find updated prop after revert\n" );
if (!ret)
unittest(strcmp(propstr, "hello" ) == 0 , "original value not in updated property after revert" );
of_changeset_destroy(&chgset);
of_node_put(n1);
of_node_put(n2);
of_node_put(n21);
of_node_put(n22);
#endif
}
static void __init __maybe_unused changeset_check_string(struct device_node *np,
const char *prop_name,
const char *expected_str)
{
const char *str;
int ret;
ret = of_property_read_string(np, prop_name, &str);
if (unittest(ret == 0 , "failed to read %s\n" , prop_name))
return ;
unittest(strcmp(str, expected_str) == 0 ,
"%s value mismatch (read '%s', exp '%s')\n" ,
prop_name, str, expected_str);
}
static void __init __maybe_unused changeset_check_string_array(struct device_node *np,
const char *prop_name,
const char * const *expected_array,
unsigned int count)
{
const char *str;
unsigned int i;
int ret;
int cnt;
cnt = of_property_count_strings(np, prop_name);
if (unittest(cnt >= 0 , "failed to get %s count\n" , prop_name))
return ;
if (unittest(cnt == count,
"%s count mismatch (read %d, exp %u)\n" ,
prop_name, cnt, count))
return ;
for (i = 0 ; i < count; i++) {
ret = of_property_read_string_index(np, prop_name, i, &str);
if (unittest(ret == 0 , "failed to read %s[%d]\n" , prop_name, i))
continue ;
unittest(strcmp(str, expected_array[i]) == 0 ,
"%s[%d] value mismatch (read '%s', exp '%s')\n" ,
prop_name, i, str, expected_array[i]);
}
}
static void __init __maybe_unused changeset_check_u32(struct device_node *np,
const char *prop_name,
u32 expected_u32)
{
u32 val32;
int ret;
ret = of_property_read_u32(np, prop_name, &val32);
if (unittest(ret == 0 , "failed to read %s\n" , prop_name))
return ;
unittest(val32 == expected_u32,
"%s value mismatch (read '%u', exp '%u')\n" ,
prop_name, val32, expected_u32);
}
static void __init __maybe_unused changeset_check_u32_array(struct device_node *np,
const char *prop_name,
const u32 *expected_array,
unsigned int count)
{
unsigned int i;
u32 val32;
int ret;
int cnt;
cnt = of_property_count_u32_elems(np, prop_name);
if (unittest(cnt >= 0 , "failed to get %s count\n" , prop_name))
return ;
if (unittest(cnt == count,
"%s count mismatch (read %d, exp %u)\n" ,
prop_name, cnt, count))
return ;
for (i = 0 ; i < count; i++) {
ret = of_property_read_u32_index(np, prop_name, i, &val32);
if (unittest(ret == 0 , "failed to read %s[%d]\n" , prop_name, i))
continue ;
unittest(val32 == expected_array[i],
"%s[%d] value mismatch (read '%u', exp '%u')\n" ,
prop_name, i, val32, expected_array[i]);
}
}
static void __init __maybe_unused changeset_check_bool(struct device_node *np,
const char *prop_name)
{
unittest(of_property_read_bool(np, prop_name),
"%s value mismatch (read 'false', exp 'true')\n" , prop_name);
}
static void __init of_unittest_changeset_prop(void )
{
#ifdef CONFIG_OF_DYNAMIC
static const char * const str_array[] = { "abc" , "defg" , "hij" };
static const u32 u32_array[] = { 123 , 4567 , 89 , 10 , 11 };
struct device_node *nchangeset, *np;
struct of_changeset chgset;
int ret;
nchangeset = of_find_node_by_path("/testcase-data/changeset" );
if (!nchangeset) {
pr_err("missing testcase data\n" );
return ;
}
of_changeset_init(&chgset);
np = of_changeset_create_node(&chgset, nchangeset, "test-prop" );
if (unittest(np, "failed to create test-prop node\n" ))
goto end_changeset_destroy;
ret = of_changeset_add_prop_string(&chgset, np, "prop-string" , "abcde" );
unittest(ret == 0 , "failed to add prop-string\n" );
ret = of_changeset_add_prop_string_array(&chgset, np, "prop-string-array" ,
str_array, ARRAY_SIZE(str_array));
unittest(ret == 0 , "failed to add prop-string-array\n" );
ret = of_changeset_add_prop_u32(&chgset, np, "prop-u32" , 1234 );
unittest(ret == 0 , "failed to add prop-u32\n" );
ret = of_changeset_add_prop_u32_array(&chgset, np, "prop-u32-array" ,
u32_array, ARRAY_SIZE(u32_array));
unittest(ret == 0 , "failed to add prop-u32-array\n" );
ret = of_changeset_add_prop_bool(&chgset, np, "prop-bool" );
unittest(ret == 0 , "failed to add prop-bool\n" );
of_node_put(np);
ret = of_changeset_apply(&chgset);
if (unittest(ret == 0 , "failed to apply changeset\n" ))
goto end_changeset_destroy;
np = of_find_node_by_path("/testcase-data/changeset/test-prop" );
if (unittest(np, "failed to find test-prop node\n" ))
goto end_revert_changeset;
changeset_check_string(np, "prop-string" , "abcde" );
changeset_check_string_array(np, "prop-string-array" , str_array, ARRAY_SIZE(str_array));
changeset_check_u32(np, "prop-u32" , 1234 );
changeset_check_u32_array(np, "prop-u32-array" , u32_array, ARRAY_SIZE(u32_array));
changeset_check_bool(np, "prop-bool" );
of_node_put(np);
end_revert_changeset:
ret = of_changeset_revert(&chgset);
unittest(ret == 0 , "failed to revert changeset\n" );
end_changeset_destroy:
of_changeset_destroy(&chgset);
of_node_put(nchangeset);
#endif
}
static void __init of_unittest_dma_get_max_cpu_address(void )
{
struct device_node *np;
phys_addr_t cpu_addr;
if (!IS_ENABLED(CONFIG_OF_ADDRESS))
return ;
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 == 0 x4fffffff,
"of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n" ,
&cpu_addr, 0 x4fffffff);
}
static void __init of_unittest_dma_ranges_one(const char *path,
u64 expect_dma_addr, u64 expect_paddr)
{
#ifdef CONFIG_HAS_DMA
struct device_node *np;
const struct bus_dma_region *map = NULL;
int rc;
np = of_find_node_by_path(path);
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
rc = of_dma_get_range(np, &map);
unittest(!rc, "of_dma_get_range failed on node %pOF rc=%i\n" , np, rc);
if (!rc) {
phys_addr_t paddr;
dma_addr_t dma_addr;
struct device *dev_bogus;
dev_bogus = kzalloc(sizeof (struct device), GFP_KERNEL);
if (!dev_bogus) {
unittest(0 , "kzalloc() failed\n" );
kfree(map);
return ;
}
dev_bogus->dma_range_map = map;
paddr = dma_to_phys(dev_bogus, expect_dma_addr);
dma_addr = phys_to_dma(dev_bogus, expect_paddr);
unittest(paddr == expect_paddr,
"of_dma_get_range: wrong phys addr %pap (expecting %llx) on node %pOF\n" ,
&paddr, expect_paddr, np);
unittest(dma_addr == expect_dma_addr,
"of_dma_get_range: wrong DMA addr %pad (expecting %llx) on node %pOF\n" ,
&dma_addr, expect_dma_addr, np);
kfree(map);
kfree(dev_bogus);
}
of_node_put(np);
#endif
}
static void __init of_unittest_parse_dma_ranges(void )
{
of_unittest_dma_ranges_one("/testcase-data/address-tests/device@70000000" ,
0 x0, 0 x20000000);
if (IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT))
of_unittest_dma_ranges_one("/testcase-data/address-tests/bus@80000000/device@1000" ,
0 x100000000, 0 x20000000);
of_unittest_dma_ranges_one("/testcase-data/address-tests/pci@90000000" ,
0 x80000000, 0 x20000000);
}
static void __init of_unittest_pci_dma_ranges(void )
{
struct device_node *np;
struct of_pci_range range;
struct of_pci_range_parser parser;
int i = 0 ;
if (!IS_ENABLED(CONFIG_PCI))
return ;
np = of_find_node_by_path("/testcase-data/address-tests/pci@90000000" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
if (of_pci_dma_range_parser_init(&parser, np)) {
pr_err("missing dma-ranges property\n" );
return ;
}
/*
* Get the dma - ranges from the device tree
*/
for_each_of_pci_range(&parser, &range) {
if (!i) {
unittest(range.size == 0 x10000000,
"for_each_of_pci_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 x20000000,
"for_each_of_pci_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.pci_addr == 0 x80000000,
"for_each_of_pci_range wrong DMA addr (%llx) on node %pOF" ,
range.pci_addr, np);
} else {
unittest(range.size == 0 x10000000,
"for_each_of_pci_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 x40000000,
"for_each_of_pci_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.pci_addr == 0 xc0000000,
"for_each_of_pci_range wrong DMA addr (%llx) on node %pOF" ,
range.pci_addr, np);
}
i++;
}
of_node_put(np);
}
static void __init of_unittest_pci_empty_dma_ranges(void )
{
struct device_node *np;
struct of_pci_range range;
struct of_pci_range_parser parser;
if (!IS_ENABLED(CONFIG_PCI))
return ;
np = of_find_node_by_path("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
if (of_pci_dma_range_parser_init(&parser, np)) {
pr_err("missing dma-ranges property\n" );
return ;
}
/*
* Get the dma - ranges from the device tree
*/
for_each_of_pci_range(&parser, &range) {
unittest(range.size == 0 x10000000,
"for_each_of_pci_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 x00000000,
"for_each_of_pci_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.pci_addr == 0 xc0000000,
"for_each_of_pci_range wrong DMA addr (%llx) on node %pOF" ,
range.pci_addr, np);
}
of_node_put(np);
}
static void __init of_unittest_bus_ranges(void )
{
struct device_node *np;
struct of_range range;
struct of_range_parser parser;
struct resource res;
int ret, count, i = 0 ;
np = of_find_node_by_path("/testcase-data/address-tests" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
if (of_range_parser_init(&parser, np)) {
pr_err("missing ranges property\n" );
return ;
}
ret = of_range_to_resource(np, 1 , &res);
unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n" ,
ret, np);
unittest(resource_type(&res) == IORESOURCE_MEM,
"of_range_to_resource wrong resource type on node %pOF res=%pR\n" ,
np, &res);
unittest(res.start == 0 xd0000000,
"of_range_to_resource wrong resource start address on node %pOF res=%pR\n" ,
np, &res);
unittest(resource_size(&res) == 0 x20000000,
"of_range_to_resource wrong resource start address on node %pOF res=%pR\n" ,
np, &res);
count = of_range_count(&parser);
unittest(count == 2 ,
"of_range_count wrong size on node %pOF count=%d\n" ,
np, count);
/*
* Get the " ranges " from the device tree
*/
for_each_of_range(&parser, &range) {
unittest(range.flags == IORESOURCE_MEM,
"for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n" ,
np, range.flags, IORESOURCE_MEM);
if (!i) {
unittest(range.size == 0 x50000000,
"for_each_of_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 x70000000,
"for_each_of_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.bus_addr == 0 x70000000,
"for_each_of_range wrong bus addr (%llx) on node %pOF" ,
range.pci_addr, np);
} else {
unittest(range.size == 0 x20000000,
"for_each_of_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 xd0000000,
"for_each_of_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.bus_addr == 0 x00000000,
"for_each_of_range wrong bus addr (%llx) on node %pOF" ,
range.pci_addr, np);
}
i++;
}
of_node_put(np);
}
static void __init of_unittest_bus_3cell_ranges(void )
{
struct device_node *np;
struct of_range range;
struct of_range_parser parser;
int i = 0 ;
np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
if (of_range_parser_init(&parser, np)) {
pr_err("missing ranges property\n" );
return ;
}
/*
* Get the " ranges " from the device tree
*/
for_each_of_range(&parser, &range) {
if (!i) {
unittest(range.flags == 0 xf00baa,
"for_each_of_range wrong flags on node %pOF flags=%x\n" ,
np, range.flags);
unittest(range.size == 0 x100000,
"for_each_of_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 xa0000000,
"for_each_of_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.bus_addr == 0 x0,
"for_each_of_range wrong bus addr (%llx) on node %pOF" ,
range.pci_addr, np);
} else {
unittest(range.flags == 0 xf00bee,
"for_each_of_range wrong flags on node %pOF flags=%x\n" ,
np, range.flags);
unittest(range.size == 0 x200000,
"for_each_of_range wrong size on node %pOF size=%llx\n" ,
np, range.size);
unittest(range.cpu_addr == 0 xb0000000,
"for_each_of_range wrong CPU addr (%llx) on node %pOF" ,
range.cpu_addr, np);
unittest(range.bus_addr == 0 x100000000,
"for_each_of_range wrong bus addr (%llx) on node %pOF" ,
range.pci_addr, np);
}
i++;
}
of_node_put(np);
}
static void __init of_unittest_reg(void )
{
struct device_node *np;
struct resource res;
int ret;
u64 addr, size;
np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
ret = of_property_read_reg(np, 0 , &addr, &size);
unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n" ,
np, ret);
unittest(addr == 0 x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n" ,
np, addr);
of_node_put(np);
np = of_find_node_by_path("/testcase-data/platform-tests-2/node/test-device@100" );
if (!np) {
pr_err("missing testcase data\n" );
return ;
}
ret = of_address_to_resource(np, 0 , &res);
unittest(ret == -EINVAL, "of_address_to_resource(%pOF) expected error on untranslatable address\n" ,
np);
of_node_put(np);
}
struct of_unittest_expected_res {
int index;
struct resource res;
};
static void __init of_unittest_check_addr(const char *node_path,
const struct of_unittest_expected_res *tab_exp,
unsigned int tab_exp_count)
{
const struct of_unittest_expected_res *expected;
struct device_node *np;
struct resource res;
unsigned int count;
int ret;
if (!IS_ENABLED(CONFIG_OF_ADDRESS))
return ;
np = of_find_node_by_path(node_path);
if (!np) {
pr_err("missing testcase data (%s)\n" , node_path);
return ;
}
expected = tab_exp;
count = tab_exp_count;
while (count--) {
ret = of_address_to_resource(np, expected->index, &res);
unittest(!ret, "of_address_to_resource(%pOF, %d) returned error %d\n" ,
np, expected->index, ret);
unittest(resource_type(&res) == resource_type(&expected->res) &&
res.start == expected->res.start &&
resource_size(&res) == resource_size(&expected->res),
"of_address_to_resource(%pOF, %d) wrong resource %pR, expected %pR\n" ,
np, expected->index, &res, &expected->res);
expected++;
}
of_node_put(np);
}
static const struct of_unittest_expected_res of_unittest_reg_2cell_expected_res[] = {
{.index = 0 , .res = DEFINE_RES_MEM(0 xa0a01000, 0 x100) },
{.index = 1 , .res = DEFINE_RES_MEM(0 xa0a02000, 0 x100) },
{.index = 2 , .res = DEFINE_RES_MEM(0 xc0c01000, 0 x100) },
{.index = 3 , .res = DEFINE_RES_MEM(0 xd0d01000, 0 x100) },
};
static const struct of_unittest_expected_res of_unittest_reg_3cell_expected_res[] = {
{.index = 0 , .res = DEFINE_RES_MEM(0 xa0a01000, 0 x100) },
{.index = 1 , .res = DEFINE_RES_MEM(0 xa0b02000, 0 x100) },
{.index = 2 , .res = DEFINE_RES_MEM(0 xc0c01000, 0 x100) },
{.index = 3 , .res = DEFINE_RES_MEM(0 xc0c09000, 0 x100) },
{.index = 4 , .res = DEFINE_RES_MEM(0 xd0d01000, 0 x100) },
};
static const struct of_unittest_expected_res of_unittest_reg_pci_expected_res[] = {
{.index = 0 , .res = DEFINE_RES_MEM(0 xe8001000, 0 x1000) },
{.index = 1 , .res = DEFINE_RES_MEM(0 xea002000, 0 x2000) },
};
static void __init of_unittest_translate_addr(void )
{
of_unittest_check_addr("/testcase-data/address-tests2/bus-2cell@10000000/device@100000" ,
of_unittest_reg_2cell_expected_res,
ARRAY_SIZE(of_unittest_reg_2cell_expected_res));
of_unittest_check_addr("/testcase-data/address-tests2/bus-3cell@20000000/local-bus@100000/device@f1001000" ,
of_unittest_reg_3cell_expected_res,
ARRAY_SIZE(of_unittest_reg_3cell_expected_res));
of_unittest_check_addr("/testcase-data/address-tests2/pcie@d1070000/pci@0,0/dev@0,0/local-bus@0/dev@e0000000" ,
of_unittest_reg_pci_expected_res,
ARRAY_SIZE(of_unittest_reg_pci_expected_res));
}
static void __init of_unittest_parse_interrupts(void )
{
struct device_node *np;
struct of_phandle_args args;
int i, rc;
if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
return ;
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 ;
memset(&args, 0 , sizeof (args));
rc = of_irq_parse_one(np, i, &args);
passed &= !rc;
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == (i + 1 ));
unittest(passed, "index %i - data error on node %pOF rc=%i\n" ,
i, args.np, 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 ;
memset(&args, 0 , sizeof (args));
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 ;
}
unittest(passed, "index %i - data error on node %pOF rc=%i\n" ,
i, args.np, rc);
}
of_node_put(np);
}
static void __init of_unittest_parse_interrupts_extended(void )
{
struct device_node *np;
struct of_phandle_args args;
int i, rc;
if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
return ;
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 ;
memset(&args, 0 , sizeof (args));
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 :
/*
* Tests child node that is missing property
* # address - cells . See the comments in
* drivers / of / unittest - data / tests - interrupts . dtsi
* nodes intmap1 and interrupts - extended0
*/
passed &= !rc;
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == 15 );
break ;
default :
passed = false ;
}
unittest(passed, "index %i - data error on node %pOF rc=%i\n" ,
i, args.np, rc);
}
of_node_put(np);
}
#if IS_ENABLED(CONFIG_OF_DYNAMIC)
static void __init of_unittest_irq_refcount(void )
{
struct of_phandle_args args;
struct device_node *intc0, *int_ext0;
struct device_node *int2, *intc_intmap0;
unsigned int ref_c0, ref_c1, ref_c2;
int rc;
bool passed;
if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
return ;
intc0 = of_find_node_by_path("/testcase-data/interrupts/intc0" );
int_ext0 = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0" );
intc_intmap0 = of_find_node_by_path("/testcase-data/interrupts/intc-intmap0" );
int2 = of_find_node_by_path("/testcase-data/interrupts/interrupts2" );
if (!intc0 || !int_ext0 || !intc_intmap0 || !int2) {
pr_err("missing testcase data\n" );
goto out;
}
/* Test refcount for API of_irq_parse_one() */
passed = true ;
ref_c0 = OF_KREF_READ(intc0);
ref_c1 = ref_c0 + 1 ;
memset(&args, 0 , sizeof (args));
rc = of_irq_parse_one(int_ext0, 0 , &args);
ref_c2 = OF_KREF_READ(intc0);
of_node_put(args.np);
passed &= !rc;
passed &= (args.np == intc0);
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == 1 );
passed &= (ref_c1 == ref_c2);
unittest(passed, "IRQ refcount case #1 failed, original(%u) expected(%u) got(%u)\n" ,
ref_c0, ref_c1, ref_c2);
/* Test refcount for API of_irq_parse_raw() */
passed = true ;
ref_c0 = OF_KREF_READ(intc_intmap0);
ref_c1 = ref_c0 + 1 ;
memset(&args, 0 , sizeof (args));
rc = of_irq_parse_one(int2, 0 , &args);
ref_c2 = OF_KREF_READ(intc_intmap0);
of_node_put(args.np);
passed &= !rc;
passed &= (args.np == intc_intmap0);
passed &= (args.args_count == 1 );
passed &= (args.args[0 ] == 2 );
passed &= (ref_c1 == ref_c2);
unittest(passed, "IRQ refcount case #2 failed, original(%u) expected(%u) got(%u)\n" ,
ref_c0, ref_c1, ref_c2);
out:
of_node_put(int2);
of_node_put(intc_intmap0);
of_node_put(int_ext0);
of_node_put(intc0);
}
#else
static inline void __init of_unittest_irq_refcount(void ) { }
#endif
static const 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_unittest_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) {
unittest(0 , "missing testcase node %s\n" ,
match_node_tests[i].path);
continue ;
}
match = of_match_node(match_node_table, np);
if (!match) {
unittest(0 , "%s didn't match anything\n" ,
match_node_tests[i].path);
continue ;
}
if (strcmp(match->data, match_node_tests[i].data) != 0 ) {
unittest(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 ;
}
unittest(1 , "passed" );
}
}
static struct resource test_bus_res = DEFINE_RES_MEM(0 xfffffff8, 2 );
static const struct platform_device_info test_bus_info = {
.name = "unittest-bus" ,
};
static void __init of_unittest_platform_populate(void )
{
int irq, rc;
struct device_node *np, *child, *grandchild;
struct platform_device *pdev, *test_bus;
const struct of_device_id match[] = {
{ .compatible = "test-device" , },
{}
};
np = of_find_node_by_path("/testcase-data" );
of_platform_default_populate(np, NULL, NULL);
/* Test that a missing irq domain returns -EPROBE_DEFER */
np = of_find_node_by_path("/testcase-data/testcase-device1" );
pdev = of_find_device_by_node(np);
unittest(pdev, "device 1 creation failed\n" );
if (!(of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)) {
irq = platform_get_irq(pdev, 0 );
unittest(irq == -EPROBE_DEFER,
"device deferred probe failed - %d\n" , irq);
/* Test that a parsing failure does not return -EPROBE_DEFER */
np = of_find_node_by_path("/testcase-data/testcase-device2" );
pdev = of_find_device_by_node(np);
unittest(pdev, "device 2 creation failed\n" );
EXPECT_BEGIN(KERN_INFO,
"platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found" );
irq = platform_get_irq(pdev, 0 );
EXPECT_END(KERN_INFO,
"platform testcase-data:testcase-device2: error -ENXIO: IRQ index 0 not found" );
unittest(irq < 0 && irq != -EPROBE_DEFER,
"device parsing error failed - %d\n" , irq);
}
np = of_find_node_by_path("/testcase-data/platform-tests" );
unittest(np, "No testcase data in device tree\n" );
if (!np)
return ;
test_bus = platform_device_register_full(&test_bus_info);
rc = PTR_ERR_OR_ZERO(test_bus);
unittest(!rc, "testbus registration failed; rc=%i\n" , rc);
if (rc) {
of_node_put(np);
return ;
}
test_bus->dev.of_node = np;
/*
* Add a dummy resource to the test bus node after it is
* registered to catch problems with un - inserted resources . The
* DT code doesn ' t insert the resources , and it has caused the
* kernel to oops in the past . This makes sure the same bug
* doesn ' t crop up again .
*/
platform_device_add_resources(test_bus, &test_bus_res, 1 );
of_platform_populate(np, match, NULL, &test_bus->dev);
for_each_child_of_node(np, child) {
for_each_child_of_node(child, grandchild) {
if (!of_property_present(grandchild, "compatible" ))
continue ;
pdev = of_find_device_by_node(grandchild);
unittest(pdev,
"Could not create device for node '%pOFn'\n" ,
grandchild);
platform_device_put(pdev);
}
}
of_platform_depopulate(&test_bus->dev);
for_each_child_of_node(np, child) {
for_each_child_of_node(child, grandchild)
unittest(!of_find_device_by_node(grandchild),
"device didn't get destroyed '%pOFn'\n" ,
grandchild);
}
platform_device_unregister(test_bus);
of_node_put(np);
}
/**
* update_node_properties - adds the properties
* of np into dup node ( present in live tree ) and
* updates parent of children of np to dup .
*
* @ np : node whose properties are being added to the live tree
* @ dup : node present in live tree to be updated
*/
static void update_node_properties(struct device_node *np,
struct device_node *dup)
{
struct property *prop;
struct property *save_next;
struct device_node *child;
int ret;
for_each_child_of_node(np, child)
child->parent = dup;
/*
* " unittest internal error : unable to add testdata property "
*
* If this message reports a property in node ' / _ _ symbols__ ' then
* the respective unittest overlay contains a label that has the
* same name as a label in the live devicetree . The label will
* be in the live devicetree only if the devicetree source was
* compiled with the ' - @ ' option . If you encounter this error ,
* please consider renaming _ _ all__ of the labels in the unittest
* overlay dts files with an odd prefix that is unlikely to be
* used in a real devicetree .
*/
/*
* open code for_each_property_of_node ( ) because of_add_property ( )
* sets prop - > next to NULL
*/
for (prop = np->properties; prop != NULL; prop = save_next) {
save_next = prop->next;
ret = of_add_property(dup, prop);
if (ret) {
if (ret == -EEXIST && !strcmp(prop->name, "name" ))
continue ;
pr_err("unittest internal error: unable to add testdata property %pOF/%s" ,
np, prop->name);
}
}
}
/**
* attach_node_and_children - attaches nodes
* and its children to live tree .
* CAUTION : misleading function name - if node @ np already exists in
* the live tree then children of @ np are * not * attached to the live
* tree . This works for the current test devicetree nodes because such
* nodes do not have child nodes .
*
* @ np : Node to attach to live tree
*/
static void attach_node_and_children(struct device_node *np)
{
struct device_node *next, *dup, *child;
unsigned long flags;
const char *full_name;
full_name = kasprintf(GFP_KERNEL, "%pOF" , np);
if (!full_name)
return ;
if (!strcmp(full_name, "/__local_fixups__" ) ||
!strcmp(full_name, "/__fixups__" )) {
kfree(full_name);
return ;
}
dup = of_find_node_by_path(full_name);
kfree(full_name);
if (dup) {
update_node_properties(np, dup);
return ;
}
child = np->child;
np->child = NULL;
mutex_lock(&of_mutex);
raw_spin_lock_irqsave(&devtree_lock, flags);
np->sibling = np->parent->child;
np->parent->child = np;
of_node_clear_flag(np, OF_DETACHED);
raw_spin_unlock_irqrestore(&devtree_lock, flags);
__of_attach_node_sysfs(np);
mutex_unlock(&of_mutex);
while (child) {
next = child->sibling;
attach_node_and_children(child);
child = next;
}
}
/**
* unittest_data_add - Reads , copies data from
* linked tree and attaches it to the live tree
*/
static int __init unittest_data_add(void )
{
void *unittest_data;
void *unittest_data_align;
struct device_node *unittest_data_node = NULL, *np;
/*
* _ _ dtbo_testcases_begin [ ] and _ _ dtbo_testcases_end [ ] are magically
* created by cmd_wrap_S_dtbo in scripts / Makefile . dtbs
*/
extern uint8_t __dtbo_testcases_begin[];
extern uint8_t __dtbo_testcases_end[];
const int size = __dtbo_testcases_end - __dtbo_testcases_begin;
int rc;
void *ret;
if (!size) {
pr_warn("%s: testcases is empty\n" , __func__);
return -ENODATA;
}
/* creating copy */
unittest_data = kmalloc(size + FDT_ALIGN_SIZE, GFP_KERNEL);
if (!unittest_data)
return -ENOMEM;
unittest_data_align = PTR_ALIGN(unittest_data, FDT_ALIGN_SIZE);
memcpy(unittest_data_align, __dtbo_testcases_begin, size);
ret = of_fdt_unflatten_tree(unittest_data_align, NULL, &unittest_data_node);
if (!ret) {
pr_warn("%s: unflatten testcases tree failed\n" , __func__);
kfree(unittest_data);
return -ENODATA;
}
if (!unittest_data_node) {
pr_warn("%s: testcases tree is empty\n" , __func__);
kfree(unittest_data);
return -ENODATA;
}
/*
* This lock normally encloses of_resolve_phandles ( )
*/
of_overlay_mutex_lock();
rc = of_resolve_phandles(unittest_data_node);
if (rc) {
pr_err("%s: Failed to resolve phandles (rc=%i)\n" , __func__, rc);
rc = -EINVAL;
goto unlock;
}
/* attach the sub-tree to live tree */
if (!of_root) {
pr_warn("%s: no live tree to attach sub-tree\n" , __func__);
kfree(unittest_data);
rc = -ENODEV;
goto unlock;
}
EXPECT_BEGIN(KERN_INFO,
"Duplicate name in testcase-data, renamed to \" duplicate-name#1 \"" );
np = unittest_data_node->child;
while (np) {
struct device_node *next = np->sibling;
np->parent = of_root;
/* this will clear OF_DETACHED in np and children */
attach_node_and_children(np);
np = next;
}
EXPECT_END(KERN_INFO,
"Duplicate name in testcase-data, renamed to \" duplicate-name#1 \"" );
unlock:
of_overlay_mutex_unlock();
return rc;
}
#ifdef CONFIG_OF_OVERLAY
static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id);
static int unittest_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
if (np == NULL) {
dev_err(dev, "No OF data for device\n" );
return -EINVAL;
}
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
of_platform_populate(np, NULL, NULL, &pdev->dev);
return 0 ;
}
static void unittest_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
}
static const struct of_device_id unittest_match[] = {
{ .compatible = "unittest" , },
{},
};
static struct platform_driver unittest_driver = {
.probe = unittest_probe,
.remove = unittest_remove,
.driver = {
.name = "unittest" ,
.of_match_table = unittest_match,
},
};
/* get the platform device instantiated at the path */
static struct platform_device *of_path_to_platform_device(const char *path)
{
struct device_node *np;
struct platform_device *pdev;
np = of_find_node_by_path(path);
if (np == NULL)
return NULL;
pdev = of_find_device_by_node(np);
of_node_put(np);
return pdev;
}
/* find out if a platform device exists at that path */
static int of_path_platform_device_exists(const char *path)
{
struct platform_device *pdev;
pdev = of_path_to_platform_device(path);
platform_device_put(pdev);
return pdev != NULL;
}
#ifdef CONFIG_OF_GPIO
struct unittest_gpio_dev {
struct gpio_chip chip;
};
static int unittest_gpio_chip_request_count;
static int unittest_gpio_probe_count;
static int unittest_gpio_probe_pass_count;
static int unittest_gpio_chip_request(struct gpio_chip *chip, unsigned int offset)
{
unittest_gpio_chip_request_count++;
pr_debug("%s(): %s %d %d\n" , __func__, chip->label, offset,
unittest_gpio_chip_request_count);
return 0 ;
}
static int unittest_gpio_probe(struct platform_device *pdev)
{
struct unittest_gpio_dev *devptr;
int ret;
unittest_gpio_probe_count++;
devptr = kzalloc(sizeof (*devptr), GFP_KERNEL);
if (!devptr)
return -ENOMEM;
platform_set_drvdata(pdev, devptr);
devptr->chip.fwnode = dev_fwnode(&pdev->dev);
devptr->chip.label = "of-unittest-gpio" ;
devptr->chip.base = -1 ; /* dynamic allocation */
devptr->chip.ngpio = 5 ;
devptr->chip.request = unittest_gpio_chip_request;
ret = gpiochip_add_data(&devptr->chip, NULL);
unittest(!ret,
"gpiochip_add_data() for node @%pfw failed, ret = %d\n" , devptr->chip.fwnode, ret);
if (!ret)
unittest_gpio_probe_pass_count++;
return ret;
}
static void unittest_gpio_remove(struct platform_device *pdev)
{
struct unittest_gpio_dev *devptr = platform_get_drvdata(pdev);
struct device *dev = &pdev->dev;
dev_dbg(dev, "%s for node @%pfw\n" , __func__, devptr->chip.fwnode);
if (devptr->chip.base != -1 )
gpiochip_remove(&devptr->chip);
kfree(devptr);
}
static const struct of_device_id unittest_gpio_id[] = {
{ .compatible = "unittest-gpio" , },
{}
};
static struct platform_driver unittest_gpio_driver = {
.probe = unittest_gpio_probe,
.remove = unittest_gpio_remove,
.driver = {
.name = "unittest-gpio" ,
.of_match_table = unittest_gpio_id,
},
};
static void __init of_unittest_overlay_gpio(void )
{
int chip_request_count;
int probe_pass_count;
int ret;
/*
* tests : apply overlays before registering driver
* Similar to installing a driver as a module , the
* driver is registered after applying the overlays .
*
* The overlays are applied by overlay_data_apply ( )
* instead of of_unittest_apply_overlay ( ) so that they
* will not be tracked . Thus they will not be removed
* by of_unittest_remove_tracked_overlays ( ) .
*
* - apply overlay_gpio_01
* - apply overlay_gpio_02a
* - apply overlay_gpio_02b
* - register driver
*
* register driver will result in
* - probe and processing gpio hog for overlay_gpio_01
* - probe for overlay_gpio_02a
* - processing gpio for overlay_gpio_02b
*/
probe_pass_count = unittest_gpio_probe_pass_count;
chip_request_count = unittest_gpio_chip_request_count;
/*
* overlay_gpio_01 contains gpio node and child gpio hog node
* overlay_gpio_02a contains gpio node
* overlay_gpio_02b contains child gpio hog node
*/
unittest(overlay_data_apply("overlay_gpio_01" , NULL),
"Adding overlay 'overlay_gpio_01' failed\n" );
unittest(overlay_data_apply("overlay_gpio_02a" , NULL),
"Adding overlay 'overlay_gpio_02a' failed\n" );
unittest(overlay_data_apply("overlay_gpio_02b" , NULL),
"Adding overlay 'overlay_gpio_02b' failed\n" );
ret = platform_driver_register(&unittest_gpio_driver);
if (unittest(ret == 0 , "could not register unittest gpio driver\n" ))
return ;
unittest(probe_pass_count + 2 == unittest_gpio_probe_pass_count,
"unittest_gpio_probe() failed or not called\n" );
unittest(chip_request_count + 2 == unittest_gpio_chip_request_count,
"unittest_gpio_chip_request() called %d times (expected 1 time)\n" ,
unittest_gpio_chip_request_count - chip_request_count);
/*
* tests : apply overlays after registering driver
*
* Similar to a driver built - in to the kernel , the
* driver is registered before applying the overlays .
*
* overlay_gpio_03 contains gpio node and child gpio hog node
*
* - apply overlay_gpio_03
*
* apply overlay will result in
* - probe and processing gpio hog .
*/
probe_pass_count = unittest_gpio_probe_pass_count;
chip_request_count = unittest_gpio_chip_request_count;
/* overlay_gpio_03 contains gpio node and child gpio hog node */
unittest(overlay_data_apply("overlay_gpio_03" , NULL),
"Adding overlay 'overlay_gpio_03' failed\n" );
unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
"unittest_gpio_probe() failed or not called\n" );
unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
"unittest_gpio_chip_request() called %d times (expected 1 time)\n" ,
unittest_gpio_chip_request_count - chip_request_count);
/*
* overlay_gpio_04a contains gpio node
*
* - apply overlay_gpio_04a
*
* apply the overlay will result in
* - probe for overlay_gpio_04a
*/
probe_pass_count = unittest_gpio_probe_pass_count;
chip_request_count = unittest_gpio_chip_request_count;
/* overlay_gpio_04a contains gpio node */
unittest(overlay_data_apply("overlay_gpio_04a" , NULL),
"Adding overlay 'overlay_gpio_04a' failed\n" );
unittest(probe_pass_count + 1 == unittest_gpio_probe_pass_count,
"unittest_gpio_probe() failed or not called\n" );
/*
* overlay_gpio_04b contains child gpio hog node
*
* - apply overlay_gpio_04b
*
* apply the overlay will result in
* - processing gpio for overlay_gpio_04b
*/
/* overlay_gpio_04b contains child gpio hog node */
unittest(overlay_data_apply("overlay_gpio_04b" , NULL),
"Adding overlay 'overlay_gpio_04b' failed\n" );
unittest(chip_request_count + 1 == unittest_gpio_chip_request_count,
"unittest_gpio_chip_request() called %d times (expected 1 time)\n" ,
unittest_gpio_chip_request_count - chip_request_count);
}
#else
static void __init of_unittest_overlay_gpio(void )
{
/* skip tests */
}
#endif
#if IS_BUILTIN(CONFIG_I2C)
/* get the i2c client device instantiated at the path */
static struct i2c_client *of_path_to_i2c_client(const char *path)
{
struct device_node *np;
struct i2c_client *client;
np = of_find_node_by_path(path);
if (np == NULL)
return NULL;
client = of_find_i2c_device_by_node(np);
of_node_put(np);
return client;
}
/* find out if a i2c client device exists at that path */
static int of_path_i2c_client_exists(const char *path)
{
struct i2c_client *client;
client = of_path_to_i2c_client(path);
if (client)
put_device(&client->dev);
return client != NULL;
}
#else
static int of_path_i2c_client_exists(const char *path)
{
return 0 ;
}
#endif
enum overlay_type {
PDEV_OVERLAY,
I2C_OVERLAY
};
static int of_path_device_type_exists(const char *path,
enum overlay_type ovtype)
{
switch (ovtype) {
case PDEV_OVERLAY:
return of_path_platform_device_exists(path);
case I2C_OVERLAY:
return of_path_i2c_client_exists(path);
}
return 0 ;
}
static const char *unittest_path(int nr, enum overlay_type ovtype)
{
const char *base;
static char buf[256 ];
switch (ovtype) {
case PDEV_OVERLAY:
base = "/testcase-data/overlay-node/test-bus" ;
break ;
case I2C_OVERLAY:
base = "/testcase-data/overlay-node/test-bus/i2c-test-bus" ;
break ;
default :
buf[0 ] = '\0' ;
return buf;
}
snprintf(buf, sizeof (buf) - 1 , "%s/test-unittest%d" , base, nr);
buf[sizeof (buf) - 1 ] = '\0' ;
return buf;
}
static int of_unittest_device_exists(int unittest_nr, enum overlay_type ovtype)
{
const char *path;
path = unittest_path(unittest_nr, ovtype);
switch (ovtype) {
case PDEV_OVERLAY:
return of_path_platform_device_exists(path);
case I2C_OVERLAY:
return of_path_i2c_client_exists(path);
}
return 0 ;
}
static const char *overlay_name_from_nr(int nr)
{
static char buf[256 ];
snprintf(buf, sizeof (buf) - 1 ,
"overlay_%d" , nr);
buf[sizeof (buf) - 1 ] = '\0' ;
return buf;
}
static const char *bus_path = "/testcase-data/overlay-node/test-bus" ;
#define MAX_TRACK_OVCS_IDS 256
static int track_ovcs_id[MAX_TRACK_OVCS_IDS];
static int track_ovcs_id_overlay_nr[MAX_TRACK_OVCS_IDS];
static int track_ovcs_id_cnt;
static void of_unittest_track_overlay(int ovcs_id, int overlay_nr)
{
if (WARN_ON(track_ovcs_id_cnt >= MAX_TRACK_OVCS_IDS))
return ;
track_ovcs_id[track_ovcs_id_cnt] = ovcs_id;
track_ovcs_id_overlay_nr[track_ovcs_id_cnt] = overlay_nr;
track_ovcs_id_cnt++;
}
static void of_unittest_untrack_overlay(int ovcs_id)
{
if (WARN_ON(track_ovcs_id_cnt < 1 ))
return ;
track_ovcs_id_cnt--;
/* If out of synch then test is broken. Do not try to recover. */
WARN_ON(track_ovcs_id[track_ovcs_id_cnt] != ovcs_id);
}
static void of_unittest_remove_tracked_overlays(void )
{
int ret, ovcs_id, overlay_nr, save_ovcs_id;
const char *overlay_name;
while (track_ovcs_id_cnt > 0 ) {
ovcs_id = track_ovcs_id[track_ovcs_id_cnt - 1 ];
overlay_nr = track_ovcs_id_overlay_nr[track_ovcs_id_cnt - 1 ];
save_ovcs_id = ovcs_id;
ret = of_overlay_remove(&ovcs_id);
if (ret == -ENODEV) {
overlay_name = overlay_name_from_nr(overlay_nr);
pr_warn("%s: of_overlay_remove() for overlay \" %s\" failed, ret = %d\n" ,
__func__, overlay_name, ret);
}
of_unittest_untrack_overlay(save_ovcs_id);
}
}
static int __init of_unittest_apply_overlay(int overlay_nr, int *ovcs_id)
{
/*
* The overlay will be tracked , thus it will be removed
* by of_unittest_remove_tracked_overlays ( ) .
*/
const char *overlay_name;
overlay_name = overlay_name_from_nr(overlay_nr);
if (!overlay_data_apply(overlay_name, ovcs_id)) {
unittest(0 , "could not apply overlay \" %s\"\n" , overlay_name);
return -EFAULT;
}
of_unittest_track_overlay(*ovcs_id, overlay_nr);
return 0 ;
}
static int __init __of_unittest_apply_overlay_check(int overlay_nr,
int unittest_nr, int before, int after,
enum overlay_type ovtype)
{
int ret, ovcs_id;
/* unittest device must be in before state */
if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
unittest(0 , "%s with device @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!before ? "enabled" : "disabled" );
return -EINVAL;
}
/* apply the overlay */
ovcs_id = 0 ;
ret = of_unittest_apply_overlay(overlay_nr, &ovcs_id);
if (ret != 0 ) {
/* of_unittest_apply_overlay already called unittest() */
return ret;
}
/* unittest device must be in after state */
if (of_unittest_device_exists(unittest_nr, ovtype) != after) {
unittest(0 , "%s with device @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!after ? "enabled" : "disabled" );
return -EINVAL;
}
return ovcs_id;
}
/* apply an overlay while checking before and after states */
static int __init of_unittest_apply_overlay_check(int overlay_nr,
int unittest_nr, int before, int after,
enum overlay_type ovtype)
{
int ovcs_id = __of_unittest_apply_overlay_check(overlay_nr,
unittest_nr, before, after, ovtype);
if (ovcs_id < 0 )
return ovcs_id;
return 0 ;
}
/* apply an overlay and then revert it while checking before, after states */
static int __init of_unittest_apply_revert_overlay_check(int overlay_nr,
int unittest_nr, int before, int after,
enum overlay_type ovtype)
{
int ret, ovcs_id, save_ovcs_id;
ovcs_id = __of_unittest_apply_overlay_check(overlay_nr, unittest_nr,
before, after, ovtype);
if (ovcs_id < 0 )
return ovcs_id;
/* remove the overlay */
save_ovcs_id = ovcs_id;
ret = of_overlay_remove(&ovcs_id);
if (ret != 0 ) {
unittest(0 , "%s failed to be destroyed @\" %s\"\n" ,
overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype));
return ret;
}
of_unittest_untrack_overlay(save_ovcs_id);
/* unittest device must be again in before state */
if (of_unittest_device_exists(unittest_nr, ovtype) != before) {
unittest(0 , "%s with device @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr),
unittest_path(unittest_nr, ovtype),
!before ? "enabled" : "disabled" );
return -EINVAL;
}
return 0 ;
}
/* test activation of device */
static void __init of_unittest_overlay_0(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status" );
/* device should enable */
ret = of_unittest_apply_overlay_check(0 , 0 , 0 , 1 , PDEV_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 0 );
}
/* test deactivation of device */
static void __init of_unittest_overlay_1(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status" );
/* device should disable */
ret = of_unittest_apply_overlay_check(1 , 1 , 1 , 0 , PDEV_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 1 );
}
/* test activation of device */
static void __init of_unittest_overlay_2(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status" );
/* device should enable */
ret = of_unittest_apply_overlay_check(2 , 2 , 0 , 1 , PDEV_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 2 );
}
/* test deactivation of device */
static void __init of_unittest_overlay_3(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status" );
/* device should disable */
ret = of_unittest_apply_overlay_check(3 , 3 , 1 , 0 , PDEV_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 3 );
}
/* test activation of a full device node */
static void __init of_unittest_overlay_4(void )
{
/* device should disable */
if (of_unittest_apply_overlay_check(4 , 4 , 0 , 1 , PDEV_OVERLAY))
return ;
unittest(1 , "overlay test %d passed\n" , 4 );
}
/* test overlay apply/revert sequence */
static void __init of_unittest_overlay_5(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status" );
/* device should disable */
ret = of_unittest_apply_revert_overlay_check(5 , 5 , 0 , 1 , PDEV_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 5 );
}
/* test overlay application in sequence */
static void __init of_unittest_overlay_6(void )
{
int i, save_ovcs_id[2 ], ovcs_id;
int overlay_nr = 6 , unittest_nr = 6 ;
int before = 0 , after = 1 ;
const char *overlay_name;
int ret;
/* unittest device must be in before state */
for (i = 0 ; i < 2 ; i++) {
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= before) {
unittest(0 , "%s with device @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled" );
return ;
}
}
/* apply the overlays */
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status" );
overlay_name = overlay_name_from_nr(overlay_nr + 0 );
ret = overlay_data_apply(overlay_name, &ovcs_id);
if (!ret) {
unittest(0 , "could not apply overlay \" %s\"\n" , overlay_name);
return ;
}
save_ovcs_id[0 ] = ovcs_id;
of_unittest_track_overlay(ovcs_id, overlay_nr + 0 );
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status" );
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status" );
overlay_name = overlay_name_from_nr(overlay_nr + 1 );
ret = overlay_data_apply(overlay_name, &ovcs_id);
if (!ret) {
unittest(0 , "could not apply overlay \" %s\"\n" , overlay_name);
return ;
}
save_ovcs_id[1 ] = ovcs_id;
of_unittest_track_overlay(ovcs_id, overlay_nr + 1 );
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status" );
for (i = 0 ; i < 2 ; i++) {
/* unittest device must be in after state */
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= after) {
unittest(0 , "overlay @\" %s\" failed @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!after ? "enabled" : "disabled" );
return ;
}
}
for (i = 1 ; i >= 0 ; i--) {
ovcs_id = save_ovcs_id[i];
if (of_overlay_remove(&ovcs_id)) {
unittest(0 , "%s failed destroy @\" %s\"\n" ,
overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY));
return ;
}
of_unittest_untrack_overlay(save_ovcs_id[i]);
}
for (i = 0 ; i < 2 ; i++) {
/* unittest device must be again in before state */
if (of_unittest_device_exists(unittest_nr + i, PDEV_OVERLAY)
!= before) {
unittest(0 , "%s with device @\" %s\" %s\n" ,
overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr + i,
PDEV_OVERLAY),
!before ? "enabled" : "disabled" );
return ;
}
}
unittest(1 , "overlay test %d passed\n" , 6 );
}
/* test overlay application in sequence */
static void __init of_unittest_overlay_8(void )
{
int i, save_ovcs_id[2 ], ovcs_id;
int overlay_nr = 8 , unittest_nr = 8 ;
const char *overlay_name;
int ret;
/* we don't care about device state in this test */
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status" );
overlay_name = overlay_name_from_nr(overlay_nr + 0 );
ret = overlay_data_apply(overlay_name, &ovcs_id);
if (!ret)
unittest(0 , "could not apply overlay \" %s\"\n" , overlay_name);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status" );
if (!ret)
return ;
save_ovcs_id[0 ] = ovcs_id;
of_unittest_track_overlay(ovcs_id, overlay_nr + 0 );
overlay_name = overlay_name_from_nr(overlay_nr + 1 );
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo" );
/* apply the overlays */
ret = overlay_data_apply(overlay_name, &ovcs_id);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo" );
if (!ret) {
unittest(0 , "could not apply overlay \" %s\"\n" , overlay_name);
return ;
}
save_ovcs_id[1 ] = ovcs_id;
of_unittest_track_overlay(ovcs_id, overlay_nr + 1 );
/* now try to remove first overlay (it should fail) */
ovcs_id = save_ovcs_id[0 ];
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8" );
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: overlay #6 is not topmost" );
ret = of_overlay_remove(&ovcs_id);
EXPECT_END(KERN_INFO,
"OF: overlay: overlay #6 is not topmost" );
EXPECT_END(KERN_INFO,
"OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8" );
if (!ret) {
/*
* Should never get here . If we do , expect a lot of
* subsequent tracking and overlay removal related errors .
*/
unittest(0 , "%s was destroyed @\" %s\"\n" ,
overlay_name_from_nr(overlay_nr + 0 ),
unittest_path(unittest_nr,
PDEV_OVERLAY));
return ;
}
/* removing them in order should work */
for (i = 1 ; i >= 0 ; i--) {
ovcs_id = save_ovcs_id[i];
if (of_overlay_remove(&ovcs_id)) {
unittest(0 , "%s not destroyed @\" %s\"\n" ,
overlay_name_from_nr(overlay_nr + i),
unittest_path(unittest_nr,
PDEV_OVERLAY));
return ;
}
of_unittest_untrack_overlay(save_ovcs_id[i]);
}
unittest(1 , "overlay test %d passed\n" , 8 );
}
/* test insertion of a bus with parent devices */
static void __init of_unittest_overlay_10(void )
{
int ret;
char *child_path;
/* device should disable */
ret = of_unittest_apply_overlay_check(10 , 10 , 0 , 1 , PDEV_OVERLAY);
if (unittest(ret == 0 ,
"overlay test %d failed; overlay application\n" , 10 ))
return ;
child_path = kasprintf(GFP_KERNEL, "%s/test-unittest101" ,
unittest_path(10 , PDEV_OVERLAY));
if (unittest(child_path, "overlay test %d failed; kasprintf\n" , 10 ))
return ;
ret = of_path_device_type_exists(child_path, PDEV_OVERLAY);
kfree(child_path);
unittest(ret, "overlay test %d failed; no child device\n" , 10 );
}
/* test insertion of a bus with parent devices (and revert) */
static void __init of_unittest_overlay_11(void )
{
int ret;
/* device should disable */
ret = of_unittest_apply_revert_overlay_check(11 , 11 , 0 , 1 ,
PDEV_OVERLAY);
unittest(ret == 0 , "overlay test %d failed; overlay apply\n" , 11 );
}
#if IS_BUILTIN(CONFIG_I2C) && IS_ENABLED(CONFIG_OF_OVERLAY)
struct unittest_i2c_bus_data {
struct platform_device *pdev;
struct i2c_adapter adap;
};
static int unittest_i2c_master_xfer(struct i2c_adapter *adap,
struct i2c_msg *msgs, int num)
{
struct unittest_i2c_bus_data *std = i2c_get_adapdata(adap);
(void )std;
return num;
}
static u32 unittest_i2c_functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm unittest_i2c_algo = {
.master_xfer = unittest_i2c_master_xfer,
.functionality = unittest_i2c_functionality,
};
static int unittest_i2c_bus_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct unittest_i2c_bus_data *std;
struct i2c_adapter *adap;
int ret;
if (np == NULL) {
dev_err(dev, "No OF data for device\n" );
return -EINVAL;
}
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
std = devm_kzalloc(dev, sizeof (*std), GFP_KERNEL);
if (!std)
return -ENOMEM;
/* link them together */
std->pdev = pdev;
platform_set_drvdata(pdev, std);
adap = &std->adap;
i2c_set_adapdata(adap, std);
adap->nr = -1 ;
strscpy(adap->name, pdev->name, sizeof (adap->name));
adap->class = I2C_CLASS_DEPRECATED;
adap->algo = &unittest_i2c_algo;
adap->dev.parent = dev;
adap->dev.of_node = dev->of_node;
adap->timeout = 5 * HZ;
adap->retries = 3 ;
ret = i2c_add_numbered_adapter(adap);
if (ret != 0 ) {
dev_err(dev, "Failed to add I2C adapter\n" );
return ret;
}
return 0 ;
}
static void unittest_i2c_bus_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct unittest_i2c_bus_data *std = platform_get_drvdata(pdev);
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
i2c_del_adapter(&std->adap);
}
static const struct of_device_id unittest_i2c_bus_match[] = {
{ .compatible = "unittest-i2c-bus" , },
{},
};
static struct platform_driver unittest_i2c_bus_driver = {
.probe = unittest_i2c_bus_probe,
.remove = unittest_i2c_bus_remove,
.driver = {
.name = "unittest-i2c-bus" ,
.of_match_table = unittest_i2c_bus_match,
},
};
static int unittest_i2c_dev_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
if (!np) {
dev_err(dev, "No OF node\n" );
return -EINVAL;
}
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
return 0 ;
};
static void unittest_i2c_dev_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
}
static const struct i2c_device_id unittest_i2c_dev_id[] = {
{ .name = "unittest-i2c-dev" },
{ }
};
static struct i2c_driver unittest_i2c_dev_driver = {
.driver = {
.name = "unittest-i2c-dev" ,
},
.probe = unittest_i2c_dev_probe,
.remove = unittest_i2c_dev_remove,
.id_table = unittest_i2c_dev_id,
};
#if IS_BUILTIN(CONFIG_I2C_MUX)
static int unittest_i2c_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
{
return 0 ;
}
static int unittest_i2c_mux_probe(struct i2c_client *client)
{
int i, nchans;
struct device *dev = &client->dev;
struct i2c_adapter *adap = client->adapter;
struct device_node *np = client->dev.of_node, *child;
struct i2c_mux_core *muxc;
u32 reg, max_reg;
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
if (!np) {
dev_err(dev, "No OF node\n" );
return -EINVAL;
}
max_reg = (u32)-1 ;
for_each_child_of_node(np, child) {
if (of_property_read_u32(child, "reg" , ®))
continue ;
if (max_reg == (u32)-1 || reg > max_reg)
max_reg = reg;
}
nchans = max_reg == (u32)-1 ? 0 : max_reg + 1 ;
if (nchans == 0 ) {
dev_err(dev, "No channels\n" );
return -EINVAL;
}
muxc = i2c_mux_alloc(adap, dev, nchans, 0 , 0 ,
unittest_i2c_mux_select_chan, NULL);
if (!muxc)
return -ENOMEM;
for (i = 0 ; i < nchans; i++) {
if (i2c_mux_add_adapter(muxc, 0 , i)) {
dev_err(dev, "Failed to register mux #%d\n" , i);
i2c_mux_del_adapters(muxc);
return -ENODEV;
}
}
i2c_set_clientdata(client, muxc);
return 0 ;
};
static void unittest_i2c_mux_remove(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct device_node *np = client->dev.of_node;
struct i2c_mux_core *muxc = i2c_get_clientdata(client);
dev_dbg(dev, "%s for node @%pOF\n" , __func__, np);
i2c_mux_del_adapters(muxc);
}
static const struct i2c_device_id unittest_i2c_mux_id[] = {
{ .name = "unittest-i2c-mux" },
{ }
};
static struct i2c_driver unittest_i2c_mux_driver = {
.driver = {
.name = "unittest-i2c-mux" ,
},
.probe = unittest_i2c_mux_probe,
.remove = unittest_i2c_mux_remove,
.id_table = unittest_i2c_mux_id,
};
#endif
static int of_unittest_overlay_i2c_init(void )
{
int ret;
ret = i2c_add_driver(&unittest_i2c_dev_driver);
if (unittest(ret == 0 ,
"could not register unittest i2c device driver\n" ))
return ret;
ret = platform_driver_register(&unittest_i2c_bus_driver);
if (unittest(ret == 0 ,
"could not register unittest i2c bus driver\n" ))
return ret;
#if IS_BUILTIN(CONFIG_I2C_MUX)
EXPECT_BEGIN(KERN_INFO,
"i2c i2c-1: Added multiplexed i2c bus 2" );
ret = i2c_add_driver(&unittest_i2c_mux_driver);
EXPECT_END(KERN_INFO,
"i2c i2c-1: Added multiplexed i2c bus 2" );
if (unittest(ret == 0 ,
"could not register unittest i2c mux driver\n" ))
return ret;
#endif
return 0 ;
}
static void of_unittest_overlay_i2c_cleanup(void )
{
#if IS_BUILTIN(CONFIG_I2C_MUX)
i2c_del_driver(&unittest_i2c_mux_driver);
#endif
platform_driver_unregister(&unittest_i2c_bus_driver);
i2c_del_driver(&unittest_i2c_dev_driver);
}
static void __init of_unittest_overlay_i2c_12(void )
{
int ret;
/* device should enable */
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status" );
ret = of_unittest_apply_overlay_check(12 , 12 , 0 , 1 , I2C_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 12 );
}
/* test deactivation of device */
static void __init of_unittest_overlay_i2c_13(void )
{
int ret;
EXPECT_BEGIN(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status" );
/* device should disable */
ret = of_unittest_apply_overlay_check(13 , 13 , 1 , 0 , I2C_OVERLAY);
EXPECT_END(KERN_INFO,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 13 );
}
/* just check for i2c mux existence */
static void of_unittest_overlay_i2c_14(void )
{
}
static void __init of_unittest_overlay_i2c_15(void )
{
int ret;
/* device should enable */
EXPECT_BEGIN(KERN_INFO,
"i2c i2c-1: Added multiplexed i2c bus 3" );
ret = of_unittest_apply_overlay_check(15 , 15 , 0 , 1 , I2C_OVERLAY);
EXPECT_END(KERN_INFO,
"i2c i2c-1: Added multiplexed i2c bus 3" );
if (ret)
return ;
unittest(1 , "overlay test %d passed\n" , 15 );
}
#else
static inline void of_unittest_overlay_i2c_14(void ) { }
static inline void of_unittest_overlay_i2c_15(void ) { }
#endif
static int of_notify(struct notifier_block *nb, unsigned long action,
void *arg)
{
struct of_overlay_notify_data *nd = arg;
struct device_node *found;
int ret;
/*
* For overlay_16 . . overlay_19 , check that returning an error
* works for each of the actions by setting an arbitrary return
* error number that matches the test number . e . g . for unittest16 ,
* ret = - EBUSY which is - 16 .
*
* OVERLAY_INFO ( ) for the overlays is declared to expect the same
* error number , so overlay_data_apply ( ) will return no error .
*
* overlay_20 will return NOTIFY_DONE
*/
ret = 0 ;
of_node_get(nd->overlay);
switch (action) {
case OF_OVERLAY_PRE_APPLY:
found = of_find_node_by_name(nd->overlay, "test-unittest16" );
if (found) {
of_node_put(found);
ret = -EBUSY;
}
break ;
case OF_OVERLAY_POST_APPLY:
found = of_find_node_by_name(nd->overlay, "test-unittest17" );
if (found) {
of_node_put(found);
ret = -EEXIST;
}
break ;
case OF_OVERLAY_PRE_REMOVE:
found = of_find_node_by_name(nd->overlay, "test-unittest18" );
if (found) {
of_node_put(found);
ret = -EXDEV;
}
break ;
case OF_OVERLAY_POST_REMOVE:
found = of_find_node_by_name(nd->overlay, "test-unittest19" );
if (found) {
of_node_put(found);
ret = -ENODEV;
}
break ;
default : /* should not happen */
of_node_put(nd->overlay);
ret = -EINVAL;
break ;
}
if (ret)
return notifier_from_errno(ret);
return NOTIFY_DONE;
}
static struct notifier_block of_nb = {
.notifier_call = of_notify,
};
static void __init of_unittest_overlay_notify(void )
{
int ovcs_id;
int ret;
ret = of_overlay_notifier_register(&of_nb);
unittest(!ret,
"of_overlay_notifier_register() failed, ret = %d\n" , ret);
if (ret)
return ;
/*
* The overlays are applied by overlay_data_apply ( )
* instead of of_unittest_apply_overlay ( ) so that they
* will not be tracked . Thus they will not be removed
* by of_unittest_remove_tracked_overlays ( ) .
*
* Applying overlays 16 - 19 will each trigger an error for a
* different action in of_notify ( ) .
*
* Applying overlay 20 will not trigger any error in of_notify ( ) .
*/
/* --- overlay 16 --- */
EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus" );
unittest(overlay_data_apply("overlay_16" , &ovcs_id),
"test OF_OVERLAY_PRE_APPLY notify injected error\n" );
EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-apply notifier error -16, target: /testcase-data/overlay-node/test-bus" );
unittest(ovcs_id, "ovcs_id not created for overlay_16\n" );
/* --- overlay 17 --- */
EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus" );
unittest(overlay_data_apply("overlay_17" , &ovcs_id),
"test OF_OVERLAY_POST_APPLY notify injected error\n" );
EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-apply notifier error -17, target: /testcase-data/overlay-node/test-bus" );
unittest(ovcs_id, "ovcs_id not created for overlay_17\n" );
/* --- overlay 18 --- */
unittest(overlay_data_apply("overlay_18" , &ovcs_id),
"OF_OVERLAY_PRE_REMOVE notify injected error\n" );
unittest(ovcs_id, "ovcs_id not created for overlay_18\n" );
if (ovcs_id) {
EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus" );
ret = of_overlay_remove(&ovcs_id);
EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset pre-remove notifier error -18, target: /testcase-data/overlay-node/test-bus" );
if (ret == -EXDEV) {
/*
* change set ovcs_id should still exist
*/
unittest(1 , "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE\n" );
} else {
unittest(0 , "overlay_18 of_overlay_remove() injected error for OF_OVERLAY_PRE_REMOVE not returned\n" );
}
} else {
unittest(1 , "ovcs_id not created for overlay_18\n" );
}
unittest(ovcs_id, "ovcs_id removed for overlay_18\n" );
/* --- overlay 19 --- */
unittest(overlay_data_apply("overlay_19" , &ovcs_id),
"OF_OVERLAY_POST_REMOVE notify injected error\n" );
unittest(ovcs_id, "ovcs_id not created for overlay_19\n" );
if (ovcs_id) {
EXPECT_BEGIN(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus" );
ret = of_overlay_remove(&ovcs_id);
EXPECT_END(KERN_INFO, "OF: overlay: overlay changeset post-remove notifier error -19, target: /testcase-data/overlay-node/test-bus" );
if (ret == -ENODEV)
unittest(1 , "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE\n" );
else
unittest(0 , "overlay_19 of_overlay_remove() injected error for OF_OVERLAY_POST_REMOVE not returned\n" );
} else {
unittest(1 , "ovcs_id removed for overlay_19\n" );
}
unittest(!ovcs_id, "changeset ovcs_id = %d not removed for overlay_19\n" ,
ovcs_id);
/* --- overlay 20 --- */
unittest(overlay_data_apply("overlay_20" , &ovcs_id),
"overlay notify no injected error\n" );
if (ovcs_id) {
ret = of_overlay_remove(&ovcs_id);
if (ret)
unittest(1 , "overlay_20 failed to be destroyed, ret = %d\n" ,
ret);
} else {
unittest(1 , "ovcs_id not created for overlay_20\n" );
}
unittest(!of_overlay_notifier_unregister(&of_nb),
"of_overlay_notifier_unregister() failed, ret = %d\n" , ret);
}
static void __init of_unittest_overlay(void )
{
struct device_node *bus_np = NULL;
unsigned int i;
if (platform_driver_register(&unittest_driver)) {
unittest(0 , "could not register unittest driver\n" );
goto out;
}
bus_np = of_find_node_by_path(bus_path);
if (bus_np == NULL) {
unittest(0 , "could not find bus_path \" %s\"\n" , bus_path);
goto out;
}
if (of_platform_default_populate(bus_np, NULL, NULL)) {
unittest(0 , "could not populate bus @ \" %s\"\n" , bus_path);
goto out;
}
if (!of_unittest_device_exists(100 , PDEV_OVERLAY)) {
unittest(0 , "could not find unittest0 @ \" %s\"\n" ,
unittest_path(100 , PDEV_OVERLAY));
goto out;
}
if (of_unittest_device_exists(101 , PDEV_OVERLAY)) {
unittest(0 , "unittest1 @ \" %s\" should not exist\n" ,
unittest_path(101 , PDEV_OVERLAY));
goto out;
}
unittest(1 , "basic infrastructure of overlays passed" );
/* tests in sequence */
of_unittest_overlay_0();
of_unittest_overlay_1();
of_unittest_overlay_2();
of_unittest_overlay_3();
of_unittest_overlay_4();
for (i = 0 ; i < 3 ; i++)
of_unittest_overlay_5();
of_unittest_overlay_6();
of_unittest_overlay_8();
of_unittest_overlay_10();
of_unittest_overlay_11();
#if IS_BUILTIN(CONFIG_I2C)
if (unittest(of_unittest_overlay_i2c_init() == 0 , "i2c init failed\n" ))
goto out;
of_unittest_overlay_i2c_12();
of_unittest_overlay_i2c_13();
of_unittest_overlay_i2c_14();
of_unittest_overlay_i2c_15();
of_unittest_overlay_i2c_cleanup();
#endif
of_unittest_overlay_gpio();
of_unittest_remove_tracked_overlays();
of_unittest_overlay_notify();
out:
of_node_put(bus_np);
}
#else
static inline void __init of_unittest_overlay(void ) { }
#endif
static void __init of_unittest_lifecycle(void )
{
#ifdef CONFIG_OF_DYNAMIC
unsigned int refcount;
int found_refcount_one = 0 ;
int put_count = 0 ;
struct device_node *np;
struct device_node *prev_sibling, *next_sibling;
const char *refcount_path = "/testcase-data/refcount-node" ;
const char *refcount_parent_path = "/testcase-data" ;
/*
* Node lifecycle tests , non - dynamic node :
*
* - Decrementing refcount to zero via of_node_put ( ) should cause the
* attempt to free the node memory by of_node_release ( ) to fail
* because the node is not a dynamic node .
*
* - Decrementing refcount past zero should result in additional
* errors reported .
*/
np = of_find_node_by_path(refcount_path);
unittest(np, "find refcount_path \" %s\"\n" , refcount_path);
if (np == NULL)
goto out_skip_tests;
while (!found_refcount_one) {
if (put_count++ > 10 ) {
unittest(0 , "guardrail to avoid infinite loop\n" );
goto out_skip_tests;
}
refcount = kref_read(&np->kobj.kref);
if (refcount == 1 )
found_refcount_one = 1 ;
else
of_node_put(np);
}
EXPECT_BEGIN(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node" );
/*
* refcount is now one , decrementing to zero will result in a call to
* of_node_release ( ) to free the node ' s memory , which should result
* in an error
*/
unittest(1 , "/testcase-data/refcount-node is one" );
of_node_put(np);
EXPECT_END(KERN_INFO, "OF: ERROR: of_node_release() detected bad of_node_put() on /testcase-data/refcount-node" );
/*
* expect stack trace for subsequent of_node_put ( ) :
* _ _ refcount_sub_and_test ( ) calls :
* refcount_warn_saturate ( r , REFCOUNT_SUB_UAF )
*
* Not capturing entire WARN_ONCE ( ) trace with EXPECT_ * ( ) , just
* the first three lines , and the last line .
*/
EXPECT_BEGIN(KERN_INFO, "------------[ cut here ]------------" );
EXPECT_BEGIN(KERN_INFO, "WARNING: <<all>>" );
EXPECT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free." );
EXPECT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---" );
/* refcount is now zero, this should fail */
unittest(1 , "/testcase-data/refcount-node is zero" );
of_node_put(np);
EXPECT_END(KERN_INFO, "---[ end trace <<int>> ]---" );
EXPECT_END(KERN_INFO, "refcount_t: underflow; use-after-free." );
EXPECT_END(KERN_INFO, "WARNING: <<all>>" );
EXPECT_END(KERN_INFO, "------------[ cut here ]------------" );
/*
* Q . do we expect to get yet another warning ?
* A . no , the WARNING is from WARN_ONCE ( )
*/
EXPECT_NOT_BEGIN(KERN_INFO, "------------[ cut here ]------------" );
EXPECT_NOT_BEGIN(KERN_INFO, "WARNING: <<all>>" );
EXPECT_NOT_BEGIN(KERN_INFO, "refcount_t: underflow; use-after-free." );
EXPECT_NOT_BEGIN(KERN_INFO, "---[ end trace <<int>> ]---" );
unittest(1 , "/testcase-data/refcount-node is zero, second time" );
of_node_put(np);
EXPECT_NOT_END(KERN_INFO, "---[ end trace <<int>> ]---" );
EXPECT_NOT_END(KERN_INFO, "refcount_t: underflow; use-after-free." );
EXPECT_NOT_END(KERN_INFO, "WARNING: <<all>>" );
EXPECT_NOT_END(KERN_INFO, "------------[ cut here ]------------" );
/*
* refcount of zero will trigger stack traces from any further
* attempt to of_node_get ( ) node " refcount - node " . One example of
* this is where of_unittest_check_node_linkage ( ) will recursively
* scan the tree , with ' for_each_child_of_node ( ) ' doing an
* of_node_get ( ) of the children of a node .
*
* Prevent the stack trace by removing node " refcount - node " from
* its parent ' s child list .
*
* WARNING : EVIL , EVIL , EVIL :
*
* Directly manipulate the child list of node / testcase - data to
* remove child refcount - node . This is ignoring all proper methods
* of removing a child and will leak a small amount of memory .
*/
np = of_find_node_by_path(refcount_parent_path);
unittest(np, "find refcount_parent_path \" %s\"\n" , refcount_parent_path);
unittest(np, "ERROR: devicetree live tree left in a 'bad state' if test fail\n" );
if (np == NULL)
return ;
prev_sibling = np->child;
next_sibling = prev_sibling->sibling;
if (!strcmp(prev_sibling->full_name, "refcount-node" )) {
np->child = next_sibling;
next_sibling = next_sibling->sibling;
}
while (next_sibling) {
if (!strcmp(next_sibling->full_name, "refcount-node" ))
prev_sibling->sibling = next_sibling->sibling;
prev_sibling = next_sibling;
next_sibling = next_sibling->sibling;
}
of_node_put(np);
return ;
out_skip_tests:
#endif
unittest(0 , "One or more lifecycle tests skipped\n" );
}
#ifdef CONFIG_OF_OVERLAY
/*
* _ _ dtbo_ # # overlay_name # # _ begin [ ] and _ _ dtbo_ # # overlay_name # # _ end [ ] are
* created by cmd_wrap_S_dtbo in scripts / Makefile . dtbs
*/
#define OVERLAY_INFO_EXTERN(overlay_name) \
extern uint8_t __dtbo_## overlay_name## _begin[]; \
extern uint8_t __dtbo_## overlay_name## _end[]
#define OVERLAY_INFO(overlay_name, expected, expected_remove) \
{ .dtbo_begin = __dtbo_## overlay_name## _begin, \
.dtbo_end = __dtbo_## overlay_name## _end, \
.expected_result = expected, \
.expected_result_remove = expected_remove, \
.name = #overlay_name , \
}
struct overlay_info {
uint8_t *dtbo_begin;
uint8_t *dtbo_end;
int expected_result;
int expected_result_remove; /* if apply failed */
int ovcs_id;
char *name;
};
OVERLAY_INFO_EXTERN(overlay_base);
OVERLAY_INFO_EXTERN(overlay);
OVERLAY_INFO_EXTERN(overlay_0);
OVERLAY_INFO_EXTERN(overlay_1);
OVERLAY_INFO_EXTERN(overlay_2);
OVERLAY_INFO_EXTERN(overlay_3);
OVERLAY_INFO_EXTERN(overlay_4);
OVERLAY_INFO_EXTERN(overlay_5);
OVERLAY_INFO_EXTERN(overlay_6);
OVERLAY_INFO_EXTERN(overlay_7);
OVERLAY_INFO_EXTERN(overlay_8);
OVERLAY_INFO_EXTERN(overlay_9);
OVERLAY_INFO_EXTERN(overlay_10);
OVERLAY_INFO_EXTERN(overlay_11);
OVERLAY_INFO_EXTERN(overlay_12);
OVERLAY_INFO_EXTERN(overlay_13);
OVERLAY_INFO_EXTERN(overlay_15);
OVERLAY_INFO_EXTERN(overlay_16);
OVERLAY_INFO_EXTERN(overlay_17);
OVERLAY_INFO_EXTERN(overlay_18);
OVERLAY_INFO_EXTERN(overlay_19);
OVERLAY_INFO_EXTERN(overlay_20);
OVERLAY_INFO_EXTERN(overlay_gpio_01);
OVERLAY_INFO_EXTERN(overlay_gpio_02a);
OVERLAY_INFO_EXTERN(overlay_gpio_02b);
OVERLAY_INFO_EXTERN(overlay_gpio_03);
OVERLAY_INFO_EXTERN(overlay_gpio_04a);
OVERLAY_INFO_EXTERN(overlay_gpio_04b);
OVERLAY_INFO_EXTERN(overlay_pci_node);
OVERLAY_INFO_EXTERN(overlay_bad_add_dup_node);
OVERLAY_INFO_EXTERN(overlay_bad_add_dup_prop);
OVERLAY_INFO_EXTERN(overlay_bad_phandle);
OVERLAY_INFO_EXTERN(overlay_bad_symbol);
OVERLAY_INFO_EXTERN(overlay_bad_unresolved);
/* entries found by name */
static struct overlay_info overlays[] = {
OVERLAY_INFO(overlay_base, -9999 , 0 ),
OVERLAY_INFO(overlay, 0 , 0 ),
OVERLAY_INFO(overlay_0, 0 , 0 ),
OVERLAY_INFO(overlay_1, 0 , 0 ),
OVERLAY_INFO(overlay_2, 0 , 0 ),
OVERLAY_INFO(overlay_3, 0 , 0 ),
OVERLAY_INFO(overlay_4, 0 , 0 ),
OVERLAY_INFO(overlay_5, 0 , 0 ),
OVERLAY_INFO(overlay_6, 0 , 0 ),
OVERLAY_INFO(overlay_7, 0 , 0 ),
OVERLAY_INFO(overlay_8, 0 , 0 ),
OVERLAY_INFO(overlay_9, 0 , 0 ),
OVERLAY_INFO(overlay_10, 0 , 0 ),
OVERLAY_INFO(overlay_11, 0 , 0 ),
OVERLAY_INFO(overlay_12, 0 , 0 ),
OVERLAY_INFO(overlay_13, 0 , 0 ),
OVERLAY_INFO(overlay_15, 0 , 0 ),
OVERLAY_INFO(overlay_16, -EBUSY, 0 ),
OVERLAY_INFO(overlay_17, -EEXIST, 0 ),
OVERLAY_INFO(overlay_18, 0 , 0 ),
OVERLAY_INFO(overlay_19, 0 , 0 ),
OVERLAY_INFO(overlay_20, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_01, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_02a, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_02b, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_03, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_04a, 0 , 0 ),
OVERLAY_INFO(overlay_gpio_04b, 0 , 0 ),
OVERLAY_INFO(overlay_pci_node, 0 , 0 ),
OVERLAY_INFO(overlay_bad_add_dup_node, -EINVAL, -ENODEV),
OVERLAY_INFO(overlay_bad_add_dup_prop, -EINVAL, -ENODEV),
OVERLAY_INFO(overlay_bad_phandle, -EINVAL, 0 ),
OVERLAY_INFO(overlay_bad_symbol, -EINVAL, -ENODEV),
OVERLAY_INFO(overlay_bad_unresolved, -EINVAL, 0 ),
/* end marker */
{ }
};
static struct device_node *overlay_base_root;
static void * __init dt_alloc_memory(u64 size, u64 align)
{
return memblock_alloc_or_panic(size, align);
}
/*
* Create base device tree for the overlay unittest .
*
* This is called from very early boot code .
*
* Do as much as possible the same way as done in _ _ unflatten_device_tree
* and other early boot steps for the normal FDT so that the overlay base
* unflattened tree will have the same characteristics as the real tree
* ( such as having memory allocated by the early allocator ) . The goal
* is to test " the real thing " as much as possible , and test " test setup
* code " as little as possible .
*
* Have to stop before resolving phandles , because that uses kmalloc .
*/
void __init unittest_unflatten_overlay_base(void )
{
struct overlay_info *info;
u32 data_size;
void *new_fdt;
u32 size;
int found = 0 ;
const char *overlay_name = "overlay_base" ;
for (info = overlays; info && info->name; info++) {
if (!strcmp(overlay_name, info->name)) {
found = 1 ;
break ;
}
}
if (!found) {
pr_err("no overlay data for %s\n" , overlay_name);
return ;
}
info = &overlays[0 ];
if (info->expected_result != -9999 ) {
pr_err("No dtb 'overlay_base' to attach\n" );
return ;
}
data_size = info->dtbo_end - info->dtbo_begin;
if (!data_size) {
pr_err("No dtb 'overlay_base' to attach\n" );
return ;
}
size = fdt_totalsize(info->dtbo_begin);
if (size != data_size) {
pr_err("dtb 'overlay_base' header totalsize != actual size" );
return ;
}
new_fdt = dt_alloc_memory(size, roundup_pow_of_two(FDT_V17_SIZE));
if (!new_fdt) {
pr_err("alloc for dtb 'overlay_base' failed" );
return ;
}
memcpy(new_fdt, info->dtbo_begin, size);
__unflatten_device_tree(new_fdt, NULL, &overlay_base_root,
dt_alloc_memory, true );
}
/*
* The purpose of of_unittest_overlay_data_add is to add an
* overlay in the normal fashion . This is a test of the whole
* picture , instead of testing individual elements .
*
* A secondary purpose is to be able to verify that the contents of
* / proc / device - tree / contains the updated structure and values from
* the overlay . That must be verified separately in user space .
*
* Return 0 on unexpected error .
*/
static int __init overlay_data_apply(const char *overlay_name, int *ovcs_id)
{
struct overlay_info *info;
int passed = 1 ;
int found = 0 ;
int ret, ret2;
u32 size;
for (info = overlays; info && info->name; info++) {
if (!strcmp(overlay_name, info->name)) {
found = 1 ;
break ;
}
}
if (!found) {
pr_err("no overlay data for %s\n" , overlay_name);
return 0 ;
}
size = info->dtbo_end - info->dtbo_begin;
if (!size)
pr_err("no overlay data for %s\n" , overlay_name);
ret = of_overlay_fdt_apply(info->dtbo_begin, size, &info->ovcs_id,
NULL);
if (ovcs_id)
*ovcs_id = info->ovcs_id;
if (ret < 0 )
goto out;
pr_debug("%s applied\n" , overlay_name);
out:
if (ret != info->expected_result) {
pr_err("of_overlay_fdt_apply() expected %d, ret=%d, %s\n" ,
info->expected_result, ret, overlay_name);
passed = 0 ;
}
if (ret < 0 ) {
/* changeset may be partially applied */
ret2 = of_overlay_remove(&info->ovcs_id);
if (ret2 != info->expected_result_remove) {
pr_err("of_overlay_remove() expected %d, ret=%d, %s\n" ,
info->expected_result_remove, ret2,
overlay_name);
passed = 0 ;
}
}
return passed;
}
/*
* The purpose of of_unittest_overlay_high_level is to add an overlay
* in the normal fashion . This is a test of the whole picture ,
* instead of individual elements .
*
* The first part of the function is _ not_ normal overlay usage ; it is
* finishing splicing the base overlay device tree into the live tree .
*/
static __init void of_unittest_overlay_high_level(void )
{
struct device_node *last_sibling;
struct device_node *np;
struct device_node *of_symbols;
struct device_node *overlay_base_symbols;
struct device_node **pprev;
struct property *prop;
int ret;
if (!overlay_base_root) {
unittest(0 , "overlay_base_root not initialized\n" );
return ;
}
/*
* Could not fixup phandles in unittest_unflatten_overlay_base ( )
* because kmalloc ( ) was not yet available .
*/
of_overlay_mutex_lock();
of_resolve_phandles(overlay_base_root);
of_overlay_mutex_unlock();
/*
* do not allow overlay_base to duplicate any node already in
* tree , this greatly simplifies the code
*/
/*
* remove overlay_base_root node " _ _ local_fixups " , after
* being used by of_resolve_phandles ( )
*/
pprev = &overlay_base_root->child;
for (np = overlay_base_root->child; np; np = np->sibling) {
if (of_node_name_eq(np, "__local_fixups__" )) {
*pprev = np->sibling;
break ;
}
pprev = &np->sibling;
}
/* remove overlay_base_root node "__symbols__" if in live tree */
of_symbols = of_get_child_by_name(of_root, "__symbols__" );
if (of_symbols) {
/* will have to graft properties from node into live tree */
pprev = &overlay_base_root->child;
for (np = overlay_base_root->child; np; np = np->sibling) {
if (of_node_name_eq(np, "__symbols__" )) {
overlay_base_symbols = np;
*pprev = np->sibling;
break ;
}
pprev = &np->sibling;
}
}
for_each_child_of_node(overlay_base_root, np) {
struct device_node *base_child;
for_each_child_of_node(of_root, base_child) {
if (!strcmp(np->full_name, base_child->full_name)) {
unittest(0 , "illegal node name in overlay_base %pOFn" ,
np);
of_node_put(np);
of_node_put(base_child);
return ;
}
}
}
/*
* overlay ' overlay_base ' is not allowed to have root
* properties , so only need to splice nodes into main device tree .
*
* root node of * overlay_base_root will not be freed , it is lost
* memory .
*/
for (np = overlay_base_root->child; np; np = np->sibling)
np->parent = of_root;
mutex_lock(&of_mutex);
for (last_sibling = np = of_root->child; np; np = np->sibling)
last_sibling = np;
if (last_sibling)
last_sibling->sibling = overlay_base_root->child;
else
of_root->child = overlay_base_root->child;
for_each_of_allnodes_from(overlay_base_root, np)
__of_attach_node_sysfs(np);
if (of_symbols) {
struct property *new_prop;
for_each_property_of_node(overlay_base_symbols, prop) {
new_prop = __of_prop_dup(prop, GFP_KERNEL);
if (!new_prop) {
unittest(0 , "__of_prop_dup() of '%s' from overlay_base node __symbols__" ,
prop->name);
goto err_unlock;
}
if (__of_add_property(of_symbols, new_prop)) {
__of_prop_free(new_prop);
/* "name" auto-generated by unflatten */
if (!strcmp(prop->name, "name" ))
continue ;
unittest(0 , "duplicate property '%s' in overlay_base node __symbols__" ,
prop->name);
goto err_unlock;
}
if (__of_add_property_sysfs(of_symbols, new_prop)) {
unittest(0 , "unable to add property '%s' in overlay_base node __symbols__ to sysfs" ,
prop->name);
goto err_unlock;
}
}
}
mutex_unlock(&of_mutex);
/* now do the normal overlay usage test */
/* --- overlay --- */
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right" );
ret = overlay_data_apply("overlay" , NULL);
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_right" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200_left" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/ride_200" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /__symbols__/hvac_2" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/rate" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/color" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/lights@40000/status" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@40/incline-up" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/ride@100/track@30/incline-up" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/fairway-1/status" );
EXPECT_END(KERN_ERR,
"OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data-2/substation@100/status" );
unittest(ret, "Adding overlay 'overlay' failed\n" );
/* --- overlay_bad_add_dup_node --- */
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name" );
EXPECT_BEGIN(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name" );
EXPECT_BEGIN(KERN_ERR,
"OF: Error reverting changeset (-19)" );
unittest(overlay_data_apply("overlay_bad_add_dup_node" , NULL),
"Adding overlay 'overlay_bad_add_dup_node' failed\n" );
EXPECT_END(KERN_ERR,
"OF: Error reverting changeset (-19)" );
EXPECT_END(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/controller:name" );
EXPECT_END(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/controller/name" );
EXPECT_END(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/controller" );
/* --- overlay_bad_add_dup_prop --- */
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail" );
EXPECT_BEGIN(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name" );
EXPECT_BEGIN(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name" );
EXPECT_BEGIN(KERN_ERR,
"OF: Error reverting changeset (-19)" );
unittest(overlay_data_apply("overlay_bad_add_dup_prop" , NULL),
"Adding overlay 'overlay_bad_add_dup_prop' failed\n" );
EXPECT_END(KERN_ERR,
"OF: Error reverting changeset (-19)" );
EXPECT_END(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/motor-1/electric:name" );
EXPECT_END(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/name" );
EXPECT_END(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add, update, and/or delete property /testcase-data-2/substation@100/motor-1/electric/rpm_avail" );
EXPECT_END(KERN_ERR,
"OF: overlay: ERROR: multiple fragments add and/or delete node /testcase-data-2/substation@100/motor-1/electric" );
/* --- overlay_bad_phandle --- */
unittest(overlay_data_apply("overlay_bad_phandle" , NULL),
"Adding overlay 'overlay_bad_phandle' failed\n" );
/* --- overlay_bad_symbol --- */
EXPECT_BEGIN(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name" );
EXPECT_BEGIN(KERN_ERR,
"OF: Error reverting changeset (-19)" );
unittest(overlay_data_apply("overlay_bad_symbol" , NULL),
"Adding overlay 'overlay_bad_symbol' failed\n" );
EXPECT_END(KERN_ERR,
"OF: Error reverting changeset (-19)" );
EXPECT_END(KERN_ERR,
"OF: changeset: apply failed: REMOVE_PROPERTY /testcase-data-2/substation@100/hvac-medium-2:name" );
/* --- overlay_bad_unresolved --- */
EXPECT_BEGIN(KERN_ERR,
"OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table" );
EXPECT_BEGIN(KERN_ERR,
"OF: resolver: overlay phandle fixup failed: -22" );
unittest(overlay_data_apply("overlay_bad_unresolved" , NULL),
"Adding overlay 'overlay_bad_unresolved' failed\n" );
EXPECT_END(KERN_ERR,
"OF: resolver: overlay phandle fixup failed: -22" );
EXPECT_END(KERN_ERR,
"OF: resolver: node label 'this_label_does_not_exist' not found in live devicetree symbols table" );
return ;
err_unlock:
mutex_unlock(&of_mutex);
}
static int of_unittest_pci_dev_num;
static int of_unittest_pci_child_num;
/*
* PCI device tree node test driver
*/
static const struct pci_device_id testdrv_pci_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_REDHAT, 0 x5), }, /* PCI_VENDOR_ID_REDHAT */
{ 0 , }
};
static int testdrv_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct overlay_info *info;
struct device_node *dn;
int ret, ovcs_id;
u32 size;
dn = pdev->dev.of_node;
if (!dn) {
dev_err(&pdev->dev, "does not find bus endpoint" );
return -EINVAL;
}
for (info = overlays; info && info->name; info++) {
if (!strcmp(info->name, "overlay_pci_node" ))
break ;
}
if (!info || !info->name) {
dev_err(&pdev->dev, "no overlay data for overlay_pci_node" );
return -ENODEV;
}
size = info->dtbo_end - info->dtbo_begin;
ret = of_overlay_fdt_apply(info->dtbo_begin, size, &ovcs_id, dn);
of_node_put(dn);
if (ret)
return ret;
of_platform_default_populate(dn, NULL, &pdev->dev);
pci_set_drvdata(pdev, (void *)(uintptr_t)ovcs_id);
return 0 ;
}
static void testdrv_remove(struct pci_dev *pdev)
{
int ovcs_id = (int )(uintptr_t)pci_get_drvdata(pdev);
of_platform_depopulate(&pdev->dev);
of_overlay_remove(&ovcs_id);
}
static struct pci_driver testdrv_driver = {
.name = "pci_dt_testdrv" ,
.id_table = testdrv_pci_ids,
.probe = testdrv_probe,
.remove = testdrv_remove,
};
static int unittest_pci_probe(struct platform_device *pdev)
{
struct resource *res;
struct device *dev;
u64 exp_addr;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0 );
if (!res)
return -ENODEV;
dev = &pdev->dev;
while (dev && !dev_is_pci(dev))
dev = dev->parent;
if (!dev) {
pr_err("unable to find parent device\n" );
return -ENODEV;
}
exp_addr = pci_resource_start(to_pci_dev(dev), 0 ) + 0 x100;
unittest(res->start == exp_addr, "Incorrect translated address %llx, expected %llx\n" ,
(u64)res->start, exp_addr);
of_unittest_pci_child_num++;
return 0 ;
}
static const struct of_device_id unittest_pci_of_match[] = {
{ .compatible = "unittest-pci" },
{ }
};
static struct platform_driver unittest_pci_driver = {
.probe = unittest_pci_probe,
.driver = {
.name = "unittest-pci" ,
.of_match_table = unittest_pci_of_match,
},
};
static int of_unittest_pci_node_verify(struct pci_dev *pdev, bool add)
{
struct device_node *pnp, *np = NULL;
struct device *child_dev;
char *path = NULL;
const __be32 *reg;
int rc = 0 ;
pnp = pdev->dev.of_node;
unittest(pnp, "Failed creating PCI dt node\n" );
if (!pnp)
return -ENODEV;
if (add) {
path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0/unittest-pci@100" , pnp);
np = of_find_node_by_path(path);
unittest(np, "Failed to get unittest-pci node under PCI node\n" );
if (!np) {
rc = -ENODEV;
goto failed;
}
reg = of_get_property(np, "reg" , NULL);
unittest(reg, "Failed to get reg property\n" );
if (!reg)
rc = -ENODEV;
} else {
path = kasprintf(GFP_KERNEL, "%pOF/pci-ep-bus@0" , pnp);
np = of_find_node_by_path(path);
unittest(!np, "Child device tree node is not removed\n" );
child_dev = device_find_any_child(&pdev->dev);
unittest(!child_dev, "Child device is not removed\n" );
put_device(child_dev);
}
failed:
kfree(path);
if (np)
of_node_put(np);
return rc;
}
static void __init of_unittest_pci_node(void )
{
struct pci_dev *pdev = NULL;
int rc;
if (!IS_ENABLED(CONFIG_PCI_DYNAMIC_OF_NODES))
return ;
rc = pci_register_driver(&testdrv_driver);
unittest(!rc, "Failed to register pci test driver; rc = %d\n" , rc);
if (rc)
return ;
rc = platform_driver_register(&unittest_pci_driver);
if (unittest(!rc, "Failed to register unittest pci driver\n" )) {
pci_unregister_driver(&testdrv_driver);
return ;
}
while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0 x5, pdev)) != NULL) {
of_unittest_pci_node_verify(pdev, true );
of_unittest_pci_dev_num++;
}
if (pdev)
pci_dev_put(pdev);
unittest(of_unittest_pci_dev_num,
"No test PCI device been found. Please run QEMU with '-device pci-testdev'\n" );
unittest(of_unittest_pci_dev_num == of_unittest_pci_child_num,
"Child device number %d is not expected %d" , of_unittest_pci_child_num,
of_unittest_pci_dev_num);
platform_driver_unregister(&unittest_pci_driver);
pci_unregister_driver(&testdrv_driver);
while ((pdev = pci_get_device(PCI_VENDOR_ID_REDHAT, 0 x5, pdev)) != NULL)
of_unittest_pci_node_verify(pdev, false );
if (pdev)
pci_dev_put(pdev);
}
#else
static inline __init void of_unittest_overlay_high_level(void ) {}
static inline __init void of_unittest_pci_node(void ) { }
#endif
static int __init of_unittest(void )
{
struct device_node *np;
int res;
pr_info("start of unittest - you will see error messages\n" );
/* Taint the kernel so we know we've run tests. */
add_taint(TAINT_TEST, LOCKDEP_STILL_OK);
/* adding data for unittest */
res = unittest_data_add();
if (res)
return res;
if (!of_aliases)
of_aliases = of_find_node_by_path("/aliases" );
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);
of_unittest_check_tree_linkage();
of_unittest_check_phandles();
of_unittest_find_node_by_name();
of_unittest_dynamic();
of_unittest_parse_phandle_with_args();
of_unittest_parse_phandle_with_args_map();
of_unittest_printf();
of_unittest_property_string();
of_unittest_property_copy();
of_unittest_changeset();
of_unittest_changeset_prop();
of_unittest_parse_interrupts();
of_unittest_parse_interrupts_extended();
of_unittest_irq_refcount();
of_unittest_dma_get_max_cpu_address();
of_unittest_parse_dma_ranges();
of_unittest_pci_dma_ranges();
of_unittest_pci_empty_dma_ranges();
of_unittest_bus_ranges();
of_unittest_bus_3cell_ranges();
of_unittest_reg();
of_unittest_translate_addr();
of_unittest_match_node();
of_unittest_platform_populate();
of_unittest_overlay();
of_unittest_lifecycle();
of_unittest_pci_node();
/* Double check linkage after removing testcase data */
of_unittest_check_tree_linkage();
of_unittest_overlay_high_level();
pr_info("end of unittest - %i passed, %i failed\n" ,
unittest_results.passed, unittest_results.failed);
return 0 ;
}
late_initcall(of_unittest);
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(vorverarbeitet am 2026-09-29)
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