menu "Device Tree and Open Firmware support"
depends on OF
-config OF_SELFTEST
- bool "Device Tree Runtime self tests"
+config OF_UNITTEST
+ bool "Device Tree runtime unit tests"
depends on OF_IRQ && OF_EARLY_FLATTREE
select OF_DYNAMIC
select OF_RESOLVE
obj-$(CONFIG_OF_ADDRESS) += address.o
obj-$(CONFIG_OF_IRQ) += irq.o
obj-$(CONFIG_OF_NET) += of_net.o
-obj-$(CONFIG_OF_SELFTEST) += of_selftest.o
-of_selftest-objs := selftest.o testcase-data/testcases.dtb.o
+obj-$(CONFIG_OF_UNITTEST) += of_unittest.o
+of_unittest-objs := unittest.o unittest-data/testcases.dtb.o
obj-$(CONFIG_OF_MDIO) += of_mdio.o
obj-$(CONFIG_OF_PCI) += of_pci.o
obj-$(CONFIG_OF_PCI_IRQ) += of_pci_irq.o
+++ /dev/null
-/*
- * Self tests for device tree subsystem
- */
-
-#define pr_fmt(fmt) "### dt-test ### " fmt
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/errno.h>
-#include <linux/hashtable.h>
-#include <linux/module.h>
-#include <linux/of.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 "of_private.h"
-
-static struct selftest_results {
- int passed;
- int failed;
-} selftest_results;
-
-#define NO_OF_NODES 3
-static struct device_node *nodes[NO_OF_NODES];
-static int last_node_index;
-static bool selftest_live_tree;
-
-#define selftest(result, fmt, ...) ({ \
- bool failed = !(result); \
- if (failed) { \
- selftest_results.failed++; \
- pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
- } else { \
- selftest_results.passed++; \
- pr_debug("pass %s():%i\n", __func__, __LINE__); \
- } \
- failed; \
-})
-
-static void __init of_selftest_find_node_by_name(void)
-{
- struct device_node *np;
-
- np = of_find_node_by_path("/testcase-data");
- selftest(np && !strcmp("/testcase-data", np->full_name),
- "find /testcase-data failed\n");
- of_node_put(np);
-
- /* Test if trailing '/' works */
- np = of_find_node_by_path("/testcase-data/");
- selftest(!np, "trailing '/' on /testcase-data/ should fail\n");
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
- "find /testcase-data/phandle-tests/consumer-a failed\n");
- of_node_put(np);
-
- np = of_find_node_by_path("testcase-alias");
- selftest(np && !strcmp("/testcase-data", np->full_name),
- "find testcase-alias failed\n");
- of_node_put(np);
-
- /* Test if trailing '/' works on aliases */
- np = of_find_node_by_path("testcase-alias/");
- selftest(!np, "trailing '/' on testcase-alias/ should fail\n");
-
- np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
- selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
- "find testcase-alias/phandle-tests/consumer-a failed\n");
- of_node_put(np);
-
- np = of_find_node_by_path("/testcase-data/missing-path");
- selftest(!np, "non-existent path returned node %s\n", np->full_name);
- of_node_put(np);
-
- np = of_find_node_by_path("missing-alias");
- selftest(!np, "non-existent alias returned node %s\n", np->full_name);
- of_node_put(np);
-
- np = of_find_node_by_path("testcase-alias/missing-path");
- selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);
- of_node_put(np);
-}
-
-static void __init of_selftest_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 = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
- if (!prop) {
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(of_update_property(np, prop) == 0,
- "Updating a missing property should have passed\n");
-
- /* Remove property - should pass */
- selftest(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);
- selftest(prop->value != NULL, "Unable to allocate large buffer\n");
- if (prop->value)
- selftest(of_add_property(np, prop) == 0,
- "Adding a large property should have passed\n");
-}
-
-static int __init of_selftest_check_node_linkage(struct device_node *np)
-{
- struct device_node *child;
- int count = 0, rc;
-
- for_each_child_of_node(np, child) {
- if (child->parent != np) {
- pr_err("Child node %s links to wrong parent %s\n",
- child->name, np->name);
- return -EINVAL;
- }
-
- rc = of_selftest_check_node_linkage(child);
- if (rc < 0)
- return rc;
- count += rc;
- }
-
- return count + 1;
-}
-
-static void __init of_selftest_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_selftest_check_node_linkage(of_root);
-
- selftest(child_count > 0, "Device node data structure is corrupted\n");
- selftest(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);
-}
-
-struct node_hash {
- struct hlist_node node;
- struct device_node *np;
-};
-
-static DEFINE_HASHTABLE(phandle_ht, 8);
-static void __init of_selftest_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 %s and %s\n",
- np->phandle, nh->np->full_name, np->full_name);
- dup_count++;
- break;
- }
- }
-
- nh = kzalloc(sizeof(*nh), GFP_KERNEL);
- if (WARN_ON(!nh))
- return;
-
- nh->np = np;
- hash_add(phandle_ht, &nh->node, np->phandle);
- phandle_count++;
- }
- selftest(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_selftest_parse_phandle_with_args(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
- selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
-
- for (i = 0; i < 8; i++) {
- bool passed = true;
- rc = of_parse_phandle_with_args(np, "phandle-list",
- "#phandle-cells", i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 0);
- break;
- case 2:
- passed &= (rc == -ENOENT);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 4);
- passed &= (args.args[2] == 3);
- break;
- case 4:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == (i + 1));
- passed &= (args.args[1] == 100);
- break;
- case 5:
- passed &= !rc;
- passed &= (args.args_count == 0);
- break;
- case 6:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
- break;
- case 7:
- passed &= (rc == -ENOENT);
- break;
- default:
- passed = false;
- }
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
-
- /* Check for missing list property */
- rc = of_parse_phandle_with_args(np, "phandle-list-missing",
- "#phandle-cells", 0, &args);
- selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-missing",
- "#phandle-cells");
- selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
-
- /* Check for missing cells property */
- rc = of_parse_phandle_with_args(np, "phandle-list",
- "#phandle-cells-missing", 0, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list",
- "#phandle-cells-missing");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-
- /* Check for bad phandle in list */
- rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
- "#phandle-cells", 0, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
- "#phandle-cells");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-
- /* Check for incorrectly formed argument list */
- rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
- "#phandle-cells", 1, &args);
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
- rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
- "#phandle-cells");
- selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
-}
-
-static void __init of_selftest_property_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");
- selftest(rc == 0, "first expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "second");
- selftest(rc == 1, "second expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "third");
- selftest(rc == 2, "third expected:0 got:%i\n", rc);
- rc = of_property_match_string(np, "phandle-list-names", "fourth");
- selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
- rc = of_property_match_string(np, "missing-property", "blah");
- selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
- rc = of_property_match_string(np, "empty-property", "blah");
- selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
- rc = of_property_match_string(np, "unterminated-string", "blah");
- selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
-
- /* of_property_count_strings() tests */
- rc = of_property_count_strings(np, "string-property");
- selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_count_strings(np, "phandle-list-names");
- selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_count_strings(np, "unterminated-string");
- selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
- rc = of_property_count_strings(np, "unterminated-string-list");
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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 */
- selftest(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);
- selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
- selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
- rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
- selftest(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);
- selftest(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);
- selftest(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);
- selftest(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_selftest_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);
- selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
- kfree(new->value);
- kfree(new->name);
- kfree(new);
-
- new = __of_prop_dup(&p2, GFP_KERNEL);
- selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
- kfree(new->value);
- kfree(new->name);
- kfree(new);
-#endif
-}
-
-static void __init of_selftest_changeset(void)
-{
-#ifdef CONFIG_OF_DYNAMIC
- struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
- struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
- struct property *ppremove;
- struct device_node *n1, *n2, *n21, *nremove, *parent;
- struct of_changeset chgset;
-
- of_changeset_init(&chgset);
- n1 = __of_node_alloc("/testcase-data/changeset/n1", GFP_KERNEL);
- selftest(n1, "testcase setup failure\n");
- n2 = __of_node_alloc("/testcase-data/changeset/n2", GFP_KERNEL);
- selftest(n2, "testcase setup failure\n");
- n21 = __of_node_alloc("/testcase-data/changeset/n2/n21", GFP_KERNEL);
- selftest(n21, "testcase setup failure %p\n", n21);
- nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
- selftest(nremove, "testcase setup failure\n");
- ppadd = __of_prop_dup(&padd, GFP_KERNEL);
- selftest(ppadd, "testcase setup failure\n");
- ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
- selftest(ppupdate, "testcase setup failure\n");
- parent = nremove->parent;
- n1->parent = parent;
- n2->parent = parent;
- n21->parent = n2;
- n2->child = n21;
- ppremove = of_find_property(parent, "prop-remove", NULL);
- selftest(ppremove, "failed to find removal prop");
-
- of_changeset_init(&chgset);
- selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
- selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
- selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
- selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
- selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
- selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
- selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
- mutex_lock(&of_mutex);
- selftest(!of_changeset_apply(&chgset), "apply failed\n");
- mutex_unlock(&of_mutex);
-
- mutex_lock(&of_mutex);
- selftest(!of_changeset_revert(&chgset), "revert failed\n");
- mutex_unlock(&of_mutex);
-
- of_changeset_destroy(&chgset);
-#endif
-}
-
-static void __init of_selftest_parse_interrupts(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 4; i++) {
- bool passed = true;
- args.args_count = 0;
- rc = of_irq_parse_one(np, i, &args);
-
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == (i + 1));
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 4; i++) {
- bool passed = true;
- args.args_count = 0;
- rc = of_irq_parse_one(np, i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 9);
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 10);
- passed &= (args.args[1] == 11);
- passed &= (args.args[2] == 12);
- break;
- case 2:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 13);
- passed &= (args.args[1] == 14);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 15);
- passed &= (args.args[1] == 16);
- break;
- default:
- passed = false;
- }
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-}
-
-static void __init of_selftest_parse_interrupts_extended(void)
-{
- struct device_node *np;
- struct of_phandle_args args;
- int i, rc;
-
- np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
- if (!np) {
- pr_err("missing testcase data\n");
- return;
- }
-
- for (i = 0; i < 7; i++) {
- bool passed = true;
- rc = of_irq_parse_one(np, i, &args);
-
- /* Test the values from tests-phandle.dtsi */
- switch (i) {
- case 0:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 1);
- break;
- case 1:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 2);
- passed &= (args.args[1] == 3);
- passed &= (args.args[2] == 4);
- break;
- case 2:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 5);
- passed &= (args.args[1] == 6);
- break;
- case 3:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 9);
- break;
- case 4:
- passed &= !rc;
- passed &= (args.args_count == 3);
- passed &= (args.args[0] == 10);
- passed &= (args.args[1] == 11);
- passed &= (args.args[2] == 12);
- break;
- case 5:
- passed &= !rc;
- passed &= (args.args_count == 2);
- passed &= (args.args[0] == 13);
- passed &= (args.args[1] == 14);
- break;
- case 6:
- passed &= !rc;
- passed &= (args.args_count == 1);
- passed &= (args.args[0] == 15);
- break;
- default:
- passed = false;
- }
-
- selftest(passed, "index %i - data error on node %s rc=%i\n",
- i, args.np->full_name, rc);
- }
- of_node_put(np);
-}
-
-static struct of_device_id match_node_table[] = {
- { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
- { .data = "B", .type = "type1", }, /* followed by type alone */
-
- { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
- { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
- { .data = "Cc", .name = "name2", .type = "type2", },
-
- { .data = "E", .compatible = "compat3" },
- { .data = "G", .compatible = "compat2", },
- { .data = "H", .compatible = "compat2", .name = "name5", },
- { .data = "I", .compatible = "compat2", .type = "type1", },
- { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
- { .data = "K", .compatible = "compat2", .name = "name9", },
- {}
-};
-
-static struct {
- const char *path;
- const char *data;
-} match_node_tests[] = {
- { .path = "/testcase-data/match-node/name0", .data = "A", },
- { .path = "/testcase-data/match-node/name1", .data = "B", },
- { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
- { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
- { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
- { .path = "/testcase-data/match-node/name3", .data = "E", },
- { .path = "/testcase-data/match-node/name4", .data = "G", },
- { .path = "/testcase-data/match-node/name5", .data = "H", },
- { .path = "/testcase-data/match-node/name6", .data = "G", },
- { .path = "/testcase-data/match-node/name7", .data = "I", },
- { .path = "/testcase-data/match-node/name8", .data = "J", },
- { .path = "/testcase-data/match-node/name9", .data = "K", },
-};
-
-static void __init of_selftest_match_node(void)
-{
- struct device_node *np;
- const struct of_device_id *match;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
- np = of_find_node_by_path(match_node_tests[i].path);
- if (!np) {
- selftest(0, "missing testcase node %s\n",
- match_node_tests[i].path);
- continue;
- }
-
- match = of_match_node(match_node_table, np);
- if (!match) {
- selftest(0, "%s didn't match anything\n",
- match_node_tests[i].path);
- continue;
- }
-
- if (strcmp(match->data, match_node_tests[i].data) != 0) {
- selftest(0, "%s got wrong match. expected %s, got %s\n",
- match_node_tests[i].path, match_node_tests[i].data,
- (const char *)match->data);
- continue;
- }
- selftest(1, "passed");
- }
-}
-
-struct device test_bus = {
- .init_name = "unittest-bus",
-};
-static void __init of_selftest_platform_populate(void)
-{
- int irq, rc;
- struct device_node *np, *child, *grandchild;
- struct platform_device *pdev;
- struct of_device_id match[] = {
- { .compatible = "test-device", },
- {}
- };
-
- np = of_find_node_by_path("/testcase-data");
- of_platform_populate(np, of_default_bus_match_table, 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);
- selftest(pdev, "device 1 creation failed\n");
-
- irq = platform_get_irq(pdev, 0);
- selftest(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);
- selftest(pdev, "device 2 creation failed\n");
- irq = platform_get_irq(pdev, 0);
- selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
-
- if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
- "No testcase data in device tree\n"));
- return;
-
- if (selftest(!(rc = device_register(&test_bus)),
- "testbus registration failed; rc=%i\n", rc));
- return;
-
- for_each_child_of_node(np, child) {
- of_platform_populate(child, match, NULL, &test_bus);
- for_each_child_of_node(child, grandchild)
- selftest(of_find_device_by_node(grandchild),
- "Could not create device for node '%s'\n",
- grandchild->name);
- }
-
- of_platform_depopulate(&test_bus);
- for_each_child_of_node(np, child) {
- for_each_child_of_node(child, grandchild)
- selftest(!of_find_device_by_node(grandchild),
- "device didn't get destroyed '%s'\n",
- grandchild->name);
- }
-
- 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 already present in 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 device_node *child;
-
- for_each_property_of_node(np, prop)
- of_add_property(dup, prop);
-
- for_each_child_of_node(np, child)
- child->parent = dup;
-}
-
-/**
- * attach_node_and_children - attaches nodes
- * and its children to live tree
- *
- * @np: Node to attach to live tree
- */
-static int attach_node_and_children(struct device_node *np)
-{
- struct device_node *next, *dup, *child;
-
- dup = of_find_node_by_path(np->full_name);
- if (dup) {
- update_node_properties(np, dup);
- return 0;
- }
-
- /* Children of the root need to be remembered for removal */
- if (np->parent == of_root) {
- if (WARN_ON(last_node_index >= NO_OF_NODES))
- return -EINVAL;
- nodes[last_node_index++] = np;
- }
-
- child = np->child;
- np->child = NULL;
- np->sibling = NULL;
- of_attach_node(np);
- while (child) {
- next = child->sibling;
- attach_node_and_children(child);
- child = next;
- }
-
- return 0;
-}
-
-/**
- * selftest_data_add - Reads, copies data from
- * linked tree and attaches it to the live tree
- */
-static int __init selftest_data_add(void)
-{
- void *selftest_data;
- struct device_node *selftest_data_node, *np;
- extern uint8_t __dtb_testcases_begin[];
- extern uint8_t __dtb_testcases_end[];
- const int size = __dtb_testcases_end - __dtb_testcases_begin;
- int rc;
-
- if (!size) {
- pr_warn("%s: No testcase data to attach; not running tests\n",
- __func__);
- return -ENODATA;
- }
-
- /* creating copy */
- selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
-
- if (!selftest_data) {
- pr_warn("%s: Failed to allocate memory for selftest_data; "
- "not running tests\n", __func__);
- return -ENOMEM;
- }
- of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
- if (!selftest_data_node) {
- pr_warn("%s: No tree to attach; not running tests\n", __func__);
- return -ENODATA;
- }
- of_node_set_flag(selftest_data_node, OF_DETACHED);
- rc = of_resolve_phandles(selftest_data_node);
- if (rc) {
- pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
- return -EINVAL;
- }
-
- if (!of_root) {
- /* enabling flag for removing nodes */
- selftest_live_tree = true;
- of_root = selftest_data_node;
-
- for_each_of_allnodes(np)
- __of_attach_node_sysfs(np);
- of_aliases = of_find_node_by_path("/aliases");
- of_chosen = of_find_node_by_path("/chosen");
- return 0;
- }
-
- /* attach the sub-tree to live tree */
- np = selftest_data_node->child;
- while (np) {
- struct device_node *next = np->sibling;
- np->parent = of_root;
- attach_node_and_children(np);
- np = next;
- }
- return 0;
-}
-
-/**
- * detach_node_and_children - detaches node
- * and its children from live tree
- *
- * @np: Node to detach from live tree
- */
-static void detach_node_and_children(struct device_node *np)
-{
- while (np->child)
- detach_node_and_children(np->child);
- of_detach_node(np);
-}
-
-/**
- * selftest_data_remove - removes the selftest data
- * nodes from the live tree
- */
-static void selftest_data_remove(void)
-{
- struct device_node *np;
- struct property *prop;
-
- if (selftest_live_tree) {
- of_node_put(of_aliases);
- of_node_put(of_chosen);
- of_aliases = NULL;
- of_chosen = NULL;
- for_each_child_of_node(of_root, np)
- detach_node_and_children(np);
- __of_detach_node_sysfs(of_root);
- of_root = NULL;
- return;
- }
-
- while (last_node_index >= 0) {
- if (nodes[last_node_index]) {
- np = of_find_node_by_path(nodes[last_node_index]->full_name);
- if (strcmp(np->full_name, "/aliases") != 0) {
- detach_node_and_children(np);
- } else {
- for_each_property_of_node(np, prop) {
- if (strcmp(prop->name, "testcase-alias") == 0)
- of_remove_property(np, prop);
- }
- }
- }
- last_node_index--;
- }
-}
-
-static int __init of_selftest(void)
-{
- struct device_node *np;
- int res;
-
- /* adding data for selftest */
- res = selftest_data_add();
- if (res)
- return res;
-
- np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
- if (!np) {
- pr_info("No testcase data in device tree; not running tests\n");
- return 0;
- }
- of_node_put(np);
-
- pr_info("start of selftest - you will see error messages\n");
- of_selftest_check_tree_linkage();
- of_selftest_check_phandles();
- of_selftest_find_node_by_name();
- of_selftest_dynamic();
- of_selftest_parse_phandle_with_args();
- of_selftest_property_string();
- of_selftest_property_copy();
- of_selftest_changeset();
- of_selftest_parse_interrupts();
- of_selftest_parse_interrupts_extended();
- of_selftest_match_node();
- of_selftest_platform_populate();
-
- /* removing selftest data from live tree */
- selftest_data_remove();
-
- /* Double check linkage after removing testcase data */
- of_selftest_check_tree_linkage();
-
- pr_info("end of selftest - %i passed, %i failed\n",
- selftest_results.passed, selftest_results.failed);
-
- return 0;
-}
-late_initcall(of_selftest);
+++ /dev/null
-/dts-v1/;
-/ {
- testcase-data {
- changeset {
- prop-update = "hello";
- prop-remove = "world";
- node-remove {
- };
- };
- };
-};
-#include "tests-phandle.dtsi"
-#include "tests-interrupts.dtsi"
-#include "tests-match.dtsi"
-#include "tests-platform.dtsi"
-
-/*
- * phandle fixup data - generated by dtc patches that aren't upstream.
- * This data must be regenerated whenever phandle references are modified in
- * the testdata tree.
- *
- * The format of this data may be subject to change. For the time being consider
- * this a kernel-internal data format.
- */
-/ { __local_fixups__ {
- fixup = "/testcase-data/testcase-device2:interrupt-parent:0",
- "/testcase-data/testcase-device1:interrupt-parent:0",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:60",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:52",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:44",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:36",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:24",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:8",
- "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:0",
- "/testcase-data/interrupts/interrupts1:interrupt-parent:0",
- "/testcase-data/interrupts/interrupts0:interrupt-parent:0",
- "/testcase-data/interrupts/intmap1:interrupt-map:12",
- "/testcase-data/interrupts/intmap0:interrupt-map:52",
- "/testcase-data/interrupts/intmap0:interrupt-map:36",
- "/testcase-data/interrupts/intmap0:interrupt-map:16",
- "/testcase-data/interrupts/intmap0:interrupt-map:4",
- "/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:12",
- "/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:0",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:56",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:52",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:40",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:24",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:8",
- "/testcase-data/phandle-tests/consumer-a:phandle-list:0";
-}; };
+++ /dev/null
-
-/ {
- testcase-data {
- interrupts {
- #address-cells = <1>;
- #size-cells = <1>;
- test_intc0: intc0 {
- interrupt-controller;
- #interrupt-cells = <1>;
- };
-
- test_intc1: intc1 {
- interrupt-controller;
- #interrupt-cells = <3>;
- };
-
- test_intc2: intc2 {
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- test_intmap0: intmap0 {
- #interrupt-cells = <1>;
- #address-cells = <0>;
- interrupt-map = <1 &test_intc0 9>,
- <2 &test_intc1 10 11 12>,
- <3 &test_intc2 13 14>,
- <4 &test_intc2 15 16>;
- };
-
- test_intmap1: intmap1 {
- #interrupt-cells = <2>;
- interrupt-map = <0x5000 1 2 &test_intc0 15>;
- };
-
- interrupts0 {
- interrupt-parent = <&test_intc0>;
- interrupts = <1>, <2>, <3>, <4>;
- };
-
- interrupts1 {
- interrupt-parent = <&test_intmap0>;
- interrupts = <1>, <2>, <3>, <4>;
- };
-
- interrupts-extended0 {
- reg = <0x5000 0x100>;
- interrupts-extended = <&test_intc0 1>,
- <&test_intc1 2 3 4>,
- <&test_intc2 5 6>,
- <&test_intmap0 1>,
- <&test_intmap0 2>,
- <&test_intmap0 3>,
- <&test_intmap1 1 2>;
- };
- };
-
- testcase-device1 {
- compatible = "testcase-device";
- interrupt-parent = <&test_intc0>;
- interrupts = <1>;
- };
-
- testcase-device2 {
- compatible = "testcase-device";
- interrupt-parent = <&test_intc2>;
- interrupts = <1>; /* invalid specifier - too short */
- };
- };
-
-};
+++ /dev/null
-
-/ {
- testcase-data {
- match-node {
- name0 { };
- name1 { device_type = "type1"; };
- a { name2 { device_type = "type1"; }; };
- b { name2 { }; };
- c { name2 { device_type = "type2"; }; };
- name3 { compatible = "compat3"; };
- name4 { compatible = "compat2", "compat3"; };
- name5 { compatible = "compat2", "compat3"; };
- name6 { compatible = "compat1", "compat2", "compat3"; };
- name7 { compatible = "compat2"; device_type = "type1"; };
- name8 { compatible = "compat2"; device_type = "type1"; };
- name9 { compatible = "compat2"; };
- };
- };
-};
+++ /dev/null
-
-/ {
- aliases {
- testcase-alias = &testcase;
- };
-
- testcase: testcase-data {
- security-password = "password";
- duplicate-name = "duplicate";
- duplicate-name { };
- phandle-tests {
- provider0: provider0 {
- #phandle-cells = <0>;
- };
-
- provider1: provider1 {
- #phandle-cells = <1>;
- };
-
- provider2: provider2 {
- #phandle-cells = <2>;
- };
-
- provider3: provider3 {
- #phandle-cells = <3>;
- };
-
- consumer-a {
- phandle-list = <&provider1 1>,
- <&provider2 2 0>,
- <0>,
- <&provider3 4 4 3>,
- <&provider2 5 100>,
- <&provider0>,
- <&provider1 7>;
- phandle-list-names = "first", "second", "third";
-
- phandle-list-bad-phandle = <12345678 0 0>;
- phandle-list-bad-args = <&provider2 1 0>,
- <&provider3 0>;
- empty-property;
- string-property = "foobar";
- unterminated-string = [40 41 42 43];
- unterminated-string-list = "first", "second", [40 41 42 43];
- };
- };
- };
-};
+++ /dev/null
-
-/ {
- testcase-data {
- platform-tests {
- #address-cells = <1>;
- #size-cells = <0>;
-
- test-device@0 {
- compatible = "test-device";
- reg = <0x0>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- dev@100 {
- compatible = "test-sub-device";
- reg = <0x100>;
- };
- };
-
- test-device@1 {
- compatible = "test-device";
- reg = <0x1>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- dev@100 {
- compatible = "test-sub-device";
- reg = <0x100>;
- };
- };
- };
- };
-};
--- /dev/null
+/dts-v1/;
+/ {
+ testcase-data {
+ changeset {
+ prop-update = "hello";
+ prop-remove = "world";
+ node-remove {
+ };
+ };
+ };
+};
+#include "tests-phandle.dtsi"
+#include "tests-interrupts.dtsi"
+#include "tests-match.dtsi"
+#include "tests-platform.dtsi"
+
+/*
+ * phandle fixup data - generated by dtc patches that aren't upstream.
+ * This data must be regenerated whenever phandle references are modified in
+ * the testdata tree.
+ *
+ * The format of this data may be subject to change. For the time being consider
+ * this a kernel-internal data format.
+ */
+/ { __local_fixups__ {
+ fixup = "/testcase-data/testcase-device2:interrupt-parent:0",
+ "/testcase-data/testcase-device1:interrupt-parent:0",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:60",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:52",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:44",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:36",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:24",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:8",
+ "/testcase-data/interrupts/interrupts-extended0:interrupts-extended:0",
+ "/testcase-data/interrupts/interrupts1:interrupt-parent:0",
+ "/testcase-data/interrupts/interrupts0:interrupt-parent:0",
+ "/testcase-data/interrupts/intmap1:interrupt-map:12",
+ "/testcase-data/interrupts/intmap0:interrupt-map:52",
+ "/testcase-data/interrupts/intmap0:interrupt-map:36",
+ "/testcase-data/interrupts/intmap0:interrupt-map:16",
+ "/testcase-data/interrupts/intmap0:interrupt-map:4",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:12",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:0",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:56",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:52",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:40",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:24",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:8",
+ "/testcase-data/phandle-tests/consumer-a:phandle-list:0";
+}; };
--- /dev/null
+
+/ {
+ testcase-data {
+ interrupts {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ test_intc0: intc0 {
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
+ test_intc1: intc1 {
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ };
+
+ test_intc2: intc2 {
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ test_intmap0: intmap0 {
+ #interrupt-cells = <1>;
+ #address-cells = <0>;
+ interrupt-map = <1 &test_intc0 9>,
+ <2 &test_intc1 10 11 12>,
+ <3 &test_intc2 13 14>,
+ <4 &test_intc2 15 16>;
+ };
+
+ test_intmap1: intmap1 {
+ #interrupt-cells = <2>;
+ interrupt-map = <0x5000 1 2 &test_intc0 15>;
+ };
+
+ interrupts0 {
+ interrupt-parent = <&test_intc0>;
+ interrupts = <1>, <2>, <3>, <4>;
+ };
+
+ interrupts1 {
+ interrupt-parent = <&test_intmap0>;
+ interrupts = <1>, <2>, <3>, <4>;
+ };
+
+ interrupts-extended0 {
+ reg = <0x5000 0x100>;
+ interrupts-extended = <&test_intc0 1>,
+ <&test_intc1 2 3 4>,
+ <&test_intc2 5 6>,
+ <&test_intmap0 1>,
+ <&test_intmap0 2>,
+ <&test_intmap0 3>,
+ <&test_intmap1 1 2>;
+ };
+ };
+
+ testcase-device1 {
+ compatible = "testcase-device";
+ interrupt-parent = <&test_intc0>;
+ interrupts = <1>;
+ };
+
+ testcase-device2 {
+ compatible = "testcase-device";
+ interrupt-parent = <&test_intc2>;
+ interrupts = <1>; /* invalid specifier - too short */
+ };
+ };
+
+};
--- /dev/null
+
+/ {
+ testcase-data {
+ match-node {
+ name0 { };
+ name1 { device_type = "type1"; };
+ a { name2 { device_type = "type1"; }; };
+ b { name2 { }; };
+ c { name2 { device_type = "type2"; }; };
+ name3 { compatible = "compat3"; };
+ name4 { compatible = "compat2", "compat3"; };
+ name5 { compatible = "compat2", "compat3"; };
+ name6 { compatible = "compat1", "compat2", "compat3"; };
+ name7 { compatible = "compat2"; device_type = "type1"; };
+ name8 { compatible = "compat2"; device_type = "type1"; };
+ name9 { compatible = "compat2"; };
+ };
+ };
+};
--- /dev/null
+
+/ {
+ aliases {
+ testcase-alias = &testcase;
+ };
+
+ testcase: testcase-data {
+ security-password = "password";
+ duplicate-name = "duplicate";
+ duplicate-name { };
+ phandle-tests {
+ provider0: provider0 {
+ #phandle-cells = <0>;
+ };
+
+ provider1: provider1 {
+ #phandle-cells = <1>;
+ };
+
+ provider2: provider2 {
+ #phandle-cells = <2>;
+ };
+
+ provider3: provider3 {
+ #phandle-cells = <3>;
+ };
+
+ consumer-a {
+ phandle-list = <&provider1 1>,
+ <&provider2 2 0>,
+ <0>,
+ <&provider3 4 4 3>,
+ <&provider2 5 100>,
+ <&provider0>,
+ <&provider1 7>;
+ phandle-list-names = "first", "second", "third";
+
+ phandle-list-bad-phandle = <12345678 0 0>;
+ phandle-list-bad-args = <&provider2 1 0>,
+ <&provider3 0>;
+ empty-property;
+ string-property = "foobar";
+ unterminated-string = [40 41 42 43];
+ unterminated-string-list = "first", "second", [40 41 42 43];
+ };
+ };
+ };
+};
--- /dev/null
+
+/ {
+ testcase-data {
+ platform-tests {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ test-device@0 {
+ compatible = "test-device";
+ reg = <0x0>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dev@100 {
+ compatible = "test-sub-device";
+ reg = <0x100>;
+ };
+ };
+
+ test-device@1 {
+ compatible = "test-device";
+ reg = <0x1>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dev@100 {
+ compatible = "test-sub-device";
+ reg = <0x100>;
+ };
+ };
+ };
+ };
+};
--- /dev/null
+/*
+ * Self tests for device tree subsystem
+ */
+
+#define pr_fmt(fmt) "### dt-test ### " fmt
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/errno.h>
+#include <linux/hashtable.h>
+#include <linux/module.h>
+#include <linux/of.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 "of_private.h"
+
+static struct selftest_results {
+ int passed;
+ int failed;
+} selftest_results;
+
+#define NO_OF_NODES 3
+static struct device_node *nodes[NO_OF_NODES];
+static int last_node_index;
+static bool selftest_live_tree;
+
+#define selftest(result, fmt, ...) ({ \
+ bool failed = !(result); \
+ if (failed) { \
+ selftest_results.failed++; \
+ pr_err("FAIL %s():%i " fmt, __func__, __LINE__, ##__VA_ARGS__); \
+ } else { \
+ selftest_results.passed++; \
+ pr_debug("pass %s():%i\n", __func__, __LINE__); \
+ } \
+ failed; \
+})
+
+static void __init of_selftest_find_node_by_name(void)
+{
+ struct device_node *np;
+
+ np = of_find_node_by_path("/testcase-data");
+ selftest(np && !strcmp("/testcase-data", np->full_name),
+ "find /testcase-data failed\n");
+ of_node_put(np);
+
+ /* Test if trailing '/' works */
+ np = of_find_node_by_path("/testcase-data/");
+ selftest(!np, "trailing '/' on /testcase-data/ should fail\n");
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
+ "find /testcase-data/phandle-tests/consumer-a failed\n");
+ of_node_put(np);
+
+ np = of_find_node_by_path("testcase-alias");
+ selftest(np && !strcmp("/testcase-data", np->full_name),
+ "find testcase-alias failed\n");
+ of_node_put(np);
+
+ /* Test if trailing '/' works on aliases */
+ np = of_find_node_by_path("testcase-alias/");
+ selftest(!np, "trailing '/' on testcase-alias/ should fail\n");
+
+ np = of_find_node_by_path("testcase-alias/phandle-tests/consumer-a");
+ selftest(np && !strcmp("/testcase-data/phandle-tests/consumer-a", np->full_name),
+ "find testcase-alias/phandle-tests/consumer-a failed\n");
+ of_node_put(np);
+
+ np = of_find_node_by_path("/testcase-data/missing-path");
+ selftest(!np, "non-existent path returned node %s\n", np->full_name);
+ of_node_put(np);
+
+ np = of_find_node_by_path("missing-alias");
+ selftest(!np, "non-existent alias returned node %s\n", np->full_name);
+ of_node_put(np);
+
+ np = of_find_node_by_path("testcase-alias/missing-path");
+ selftest(!np, "non-existent alias with relative path returned node %s\n", np->full_name);
+ of_node_put(np);
+}
+
+static void __init of_selftest_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 = kzalloc(sizeof(*prop) * 4, GFP_KERNEL);
+ if (!prop) {
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(of_update_property(np, prop) == 0,
+ "Updating a missing property should have passed\n");
+
+ /* Remove property - should pass */
+ selftest(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);
+ selftest(prop->value != NULL, "Unable to allocate large buffer\n");
+ if (prop->value)
+ selftest(of_add_property(np, prop) == 0,
+ "Adding a large property should have passed\n");
+}
+
+static int __init of_selftest_check_node_linkage(struct device_node *np)
+{
+ struct device_node *child;
+ int count = 0, rc;
+
+ for_each_child_of_node(np, child) {
+ if (child->parent != np) {
+ pr_err("Child node %s links to wrong parent %s\n",
+ child->name, np->name);
+ return -EINVAL;
+ }
+
+ rc = of_selftest_check_node_linkage(child);
+ if (rc < 0)
+ return rc;
+ count += rc;
+ }
+
+ return count + 1;
+}
+
+static void __init of_selftest_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_selftest_check_node_linkage(of_root);
+
+ selftest(child_count > 0, "Device node data structure is corrupted\n");
+ selftest(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);
+}
+
+struct node_hash {
+ struct hlist_node node;
+ struct device_node *np;
+};
+
+static DEFINE_HASHTABLE(phandle_ht, 8);
+static void __init of_selftest_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 %s and %s\n",
+ np->phandle, nh->np->full_name, np->full_name);
+ dup_count++;
+ break;
+ }
+ }
+
+ nh = kzalloc(sizeof(*nh), GFP_KERNEL);
+ if (WARN_ON(!nh))
+ return;
+
+ nh->np = np;
+ hash_add(phandle_ht, &nh->node, np->phandle);
+ phandle_count++;
+ }
+ selftest(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_selftest_parse_phandle_with_args(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ rc = of_count_phandle_with_args(np, "phandle-list", "#phandle-cells");
+ selftest(rc == 7, "of_count_phandle_with_args() returned %i, expected 7\n", rc);
+
+ for (i = 0; i < 8; i++) {
+ bool passed = true;
+ rc = of_parse_phandle_with_args(np, "phandle-list",
+ "#phandle-cells", i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 0);
+ break;
+ case 2:
+ passed &= (rc == -ENOENT);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 4);
+ passed &= (args.args[2] == 3);
+ break;
+ case 4:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == (i + 1));
+ passed &= (args.args[1] == 100);
+ break;
+ case 5:
+ passed &= !rc;
+ passed &= (args.args_count == 0);
+ break;
+ case 6:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+ break;
+ case 7:
+ passed &= (rc == -ENOENT);
+ break;
+ default:
+ passed = false;
+ }
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+
+ /* Check for missing list property */
+ rc = of_parse_phandle_with_args(np, "phandle-list-missing",
+ "#phandle-cells", 0, &args);
+ selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-missing",
+ "#phandle-cells");
+ selftest(rc == -ENOENT, "expected:%i got:%i\n", -ENOENT, rc);
+
+ /* Check for missing cells property */
+ rc = of_parse_phandle_with_args(np, "phandle-list",
+ "#phandle-cells-missing", 0, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list",
+ "#phandle-cells-missing");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+
+ /* Check for bad phandle in list */
+ rc = of_parse_phandle_with_args(np, "phandle-list-bad-phandle",
+ "#phandle-cells", 0, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-bad-phandle",
+ "#phandle-cells");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+
+ /* Check for incorrectly formed argument list */
+ rc = of_parse_phandle_with_args(np, "phandle-list-bad-args",
+ "#phandle-cells", 1, &args);
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+ rc = of_count_phandle_with_args(np, "phandle-list-bad-args",
+ "#phandle-cells");
+ selftest(rc == -EINVAL, "expected:%i got:%i\n", -EINVAL, rc);
+}
+
+static void __init of_selftest_property_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");
+ selftest(rc == 0, "first expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "second");
+ selftest(rc == 1, "second expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "third");
+ selftest(rc == 2, "third expected:0 got:%i\n", rc);
+ rc = of_property_match_string(np, "phandle-list-names", "fourth");
+ selftest(rc == -ENODATA, "unmatched string; rc=%i\n", rc);
+ rc = of_property_match_string(np, "missing-property", "blah");
+ selftest(rc == -EINVAL, "missing property; rc=%i\n", rc);
+ rc = of_property_match_string(np, "empty-property", "blah");
+ selftest(rc == -ENODATA, "empty property; rc=%i\n", rc);
+ rc = of_property_match_string(np, "unterminated-string", "blah");
+ selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
+
+ /* of_property_count_strings() tests */
+ rc = of_property_count_strings(np, "string-property");
+ selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "phandle-list-names");
+ selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "unterminated-string");
+ selftest(rc == -EILSEQ, "unterminated string; rc=%i\n", rc);
+ rc = of_property_count_strings(np, "unterminated-string-list");
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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 */
+ selftest(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);
+ selftest(rc == 1, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_read_string_array(np, "phandle-list-names", strings, 4);
+ selftest(rc == 3, "Incorrect string count; rc=%i\n", rc);
+ rc = of_property_read_string_array(np, "unterminated-string", strings, 4);
+ selftest(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);
+ selftest(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);
+ selftest(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);
+ selftest(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_selftest_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);
+ selftest(new && propcmp(&p1, new), "empty property didn't copy correctly\n");
+ kfree(new->value);
+ kfree(new->name);
+ kfree(new);
+
+ new = __of_prop_dup(&p2, GFP_KERNEL);
+ selftest(new && propcmp(&p2, new), "non-empty property didn't copy correctly\n");
+ kfree(new->value);
+ kfree(new->name);
+ kfree(new);
+#endif
+}
+
+static void __init of_selftest_changeset(void)
+{
+#ifdef CONFIG_OF_DYNAMIC
+ struct property *ppadd, padd = { .name = "prop-add", .length = 0, .value = "" };
+ struct property *ppupdate, pupdate = { .name = "prop-update", .length = 5, .value = "abcd" };
+ struct property *ppremove;
+ struct device_node *n1, *n2, *n21, *nremove, *parent;
+ struct of_changeset chgset;
+
+ of_changeset_init(&chgset);
+ n1 = __of_node_alloc("/testcase-data/changeset/n1", GFP_KERNEL);
+ selftest(n1, "testcase setup failure\n");
+ n2 = __of_node_alloc("/testcase-data/changeset/n2", GFP_KERNEL);
+ selftest(n2, "testcase setup failure\n");
+ n21 = __of_node_alloc("/testcase-data/changeset/n2/n21", GFP_KERNEL);
+ selftest(n21, "testcase setup failure %p\n", n21);
+ nremove = of_find_node_by_path("/testcase-data/changeset/node-remove");
+ selftest(nremove, "testcase setup failure\n");
+ ppadd = __of_prop_dup(&padd, GFP_KERNEL);
+ selftest(ppadd, "testcase setup failure\n");
+ ppupdate = __of_prop_dup(&pupdate, GFP_KERNEL);
+ selftest(ppupdate, "testcase setup failure\n");
+ parent = nremove->parent;
+ n1->parent = parent;
+ n2->parent = parent;
+ n21->parent = n2;
+ n2->child = n21;
+ ppremove = of_find_property(parent, "prop-remove", NULL);
+ selftest(ppremove, "failed to find removal prop");
+
+ of_changeset_init(&chgset);
+ selftest(!of_changeset_attach_node(&chgset, n1), "fail attach n1\n");
+ selftest(!of_changeset_attach_node(&chgset, n2), "fail attach n2\n");
+ selftest(!of_changeset_detach_node(&chgset, nremove), "fail remove node\n");
+ selftest(!of_changeset_attach_node(&chgset, n21), "fail attach n21\n");
+ selftest(!of_changeset_add_property(&chgset, parent, ppadd), "fail add prop\n");
+ selftest(!of_changeset_update_property(&chgset, parent, ppupdate), "fail update prop\n");
+ selftest(!of_changeset_remove_property(&chgset, parent, ppremove), "fail remove prop\n");
+ mutex_lock(&of_mutex);
+ selftest(!of_changeset_apply(&chgset), "apply failed\n");
+ mutex_unlock(&of_mutex);
+
+ mutex_lock(&of_mutex);
+ selftest(!of_changeset_revert(&chgset), "revert failed\n");
+ mutex_unlock(&of_mutex);
+
+ of_changeset_destroy(&chgset);
+#endif
+}
+
+static void __init of_selftest_parse_interrupts(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts0");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 4; i++) {
+ bool passed = true;
+ args.args_count = 0;
+ rc = of_irq_parse_one(np, i, &args);
+
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == (i + 1));
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts1");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 4; i++) {
+ bool passed = true;
+ args.args_count = 0;
+ rc = of_irq_parse_one(np, i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 9);
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 10);
+ passed &= (args.args[1] == 11);
+ passed &= (args.args[2] == 12);
+ break;
+ case 2:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 13);
+ passed &= (args.args[1] == 14);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 15);
+ passed &= (args.args[1] == 16);
+ break;
+ default:
+ passed = false;
+ }
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+}
+
+static void __init of_selftest_parse_interrupts_extended(void)
+{
+ struct device_node *np;
+ struct of_phandle_args args;
+ int i, rc;
+
+ np = of_find_node_by_path("/testcase-data/interrupts/interrupts-extended0");
+ if (!np) {
+ pr_err("missing testcase data\n");
+ return;
+ }
+
+ for (i = 0; i < 7; i++) {
+ bool passed = true;
+ rc = of_irq_parse_one(np, i, &args);
+
+ /* Test the values from tests-phandle.dtsi */
+ switch (i) {
+ case 0:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 1);
+ break;
+ case 1:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 2);
+ passed &= (args.args[1] == 3);
+ passed &= (args.args[2] == 4);
+ break;
+ case 2:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 5);
+ passed &= (args.args[1] == 6);
+ break;
+ case 3:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 9);
+ break;
+ case 4:
+ passed &= !rc;
+ passed &= (args.args_count == 3);
+ passed &= (args.args[0] == 10);
+ passed &= (args.args[1] == 11);
+ passed &= (args.args[2] == 12);
+ break;
+ case 5:
+ passed &= !rc;
+ passed &= (args.args_count == 2);
+ passed &= (args.args[0] == 13);
+ passed &= (args.args[1] == 14);
+ break;
+ case 6:
+ passed &= !rc;
+ passed &= (args.args_count == 1);
+ passed &= (args.args[0] == 15);
+ break;
+ default:
+ passed = false;
+ }
+
+ selftest(passed, "index %i - data error on node %s rc=%i\n",
+ i, args.np->full_name, rc);
+ }
+ of_node_put(np);
+}
+
+static struct of_device_id match_node_table[] = {
+ { .data = "A", .name = "name0", }, /* Name alone is lowest priority */
+ { .data = "B", .type = "type1", }, /* followed by type alone */
+
+ { .data = "Ca", .name = "name2", .type = "type1", }, /* followed by both together */
+ { .data = "Cb", .name = "name2", }, /* Only match when type doesn't match */
+ { .data = "Cc", .name = "name2", .type = "type2", },
+
+ { .data = "E", .compatible = "compat3" },
+ { .data = "G", .compatible = "compat2", },
+ { .data = "H", .compatible = "compat2", .name = "name5", },
+ { .data = "I", .compatible = "compat2", .type = "type1", },
+ { .data = "J", .compatible = "compat2", .type = "type1", .name = "name8", },
+ { .data = "K", .compatible = "compat2", .name = "name9", },
+ {}
+};
+
+static struct {
+ const char *path;
+ const char *data;
+} match_node_tests[] = {
+ { .path = "/testcase-data/match-node/name0", .data = "A", },
+ { .path = "/testcase-data/match-node/name1", .data = "B", },
+ { .path = "/testcase-data/match-node/a/name2", .data = "Ca", },
+ { .path = "/testcase-data/match-node/b/name2", .data = "Cb", },
+ { .path = "/testcase-data/match-node/c/name2", .data = "Cc", },
+ { .path = "/testcase-data/match-node/name3", .data = "E", },
+ { .path = "/testcase-data/match-node/name4", .data = "G", },
+ { .path = "/testcase-data/match-node/name5", .data = "H", },
+ { .path = "/testcase-data/match-node/name6", .data = "G", },
+ { .path = "/testcase-data/match-node/name7", .data = "I", },
+ { .path = "/testcase-data/match-node/name8", .data = "J", },
+ { .path = "/testcase-data/match-node/name9", .data = "K", },
+};
+
+static void __init of_selftest_match_node(void)
+{
+ struct device_node *np;
+ const struct of_device_id *match;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(match_node_tests); i++) {
+ np = of_find_node_by_path(match_node_tests[i].path);
+ if (!np) {
+ selftest(0, "missing testcase node %s\n",
+ match_node_tests[i].path);
+ continue;
+ }
+
+ match = of_match_node(match_node_table, np);
+ if (!match) {
+ selftest(0, "%s didn't match anything\n",
+ match_node_tests[i].path);
+ continue;
+ }
+
+ if (strcmp(match->data, match_node_tests[i].data) != 0) {
+ selftest(0, "%s got wrong match. expected %s, got %s\n",
+ match_node_tests[i].path, match_node_tests[i].data,
+ (const char *)match->data);
+ continue;
+ }
+ selftest(1, "passed");
+ }
+}
+
+struct device test_bus = {
+ .init_name = "unittest-bus",
+};
+static void __init of_selftest_platform_populate(void)
+{
+ int irq, rc;
+ struct device_node *np, *child, *grandchild;
+ struct platform_device *pdev;
+ struct of_device_id match[] = {
+ { .compatible = "test-device", },
+ {}
+ };
+
+ np = of_find_node_by_path("/testcase-data");
+ of_platform_populate(np, of_default_bus_match_table, 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);
+ selftest(pdev, "device 1 creation failed\n");
+
+ irq = platform_get_irq(pdev, 0);
+ selftest(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);
+ selftest(pdev, "device 2 creation failed\n");
+ irq = platform_get_irq(pdev, 0);
+ selftest(irq < 0 && irq != -EPROBE_DEFER, "device parsing error failed - %d\n", irq);
+
+ if (selftest(np = of_find_node_by_path("/testcase-data/platform-tests"),
+ "No testcase data in device tree\n"));
+ return;
+
+ if (selftest(!(rc = device_register(&test_bus)),
+ "testbus registration failed; rc=%i\n", rc));
+ return;
+
+ for_each_child_of_node(np, child) {
+ of_platform_populate(child, match, NULL, &test_bus);
+ for_each_child_of_node(child, grandchild)
+ selftest(of_find_device_by_node(grandchild),
+ "Could not create device for node '%s'\n",
+ grandchild->name);
+ }
+
+ of_platform_depopulate(&test_bus);
+ for_each_child_of_node(np, child) {
+ for_each_child_of_node(child, grandchild)
+ selftest(!of_find_device_by_node(grandchild),
+ "device didn't get destroyed '%s'\n",
+ grandchild->name);
+ }
+
+ 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 already present in 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 device_node *child;
+
+ for_each_property_of_node(np, prop)
+ of_add_property(dup, prop);
+
+ for_each_child_of_node(np, child)
+ child->parent = dup;
+}
+
+/**
+ * attach_node_and_children - attaches nodes
+ * and its children to live tree
+ *
+ * @np: Node to attach to live tree
+ */
+static int attach_node_and_children(struct device_node *np)
+{
+ struct device_node *next, *dup, *child;
+
+ dup = of_find_node_by_path(np->full_name);
+ if (dup) {
+ update_node_properties(np, dup);
+ return 0;
+ }
+
+ /* Children of the root need to be remembered for removal */
+ if (np->parent == of_root) {
+ if (WARN_ON(last_node_index >= NO_OF_NODES))
+ return -EINVAL;
+ nodes[last_node_index++] = np;
+ }
+
+ child = np->child;
+ np->child = NULL;
+ np->sibling = NULL;
+ of_attach_node(np);
+ while (child) {
+ next = child->sibling;
+ attach_node_and_children(child);
+ child = next;
+ }
+
+ return 0;
+}
+
+/**
+ * selftest_data_add - Reads, copies data from
+ * linked tree and attaches it to the live tree
+ */
+static int __init selftest_data_add(void)
+{
+ void *selftest_data;
+ struct device_node *selftest_data_node, *np;
+ extern uint8_t __dtb_testcases_begin[];
+ extern uint8_t __dtb_testcases_end[];
+ const int size = __dtb_testcases_end - __dtb_testcases_begin;
+ int rc;
+
+ if (!size) {
+ pr_warn("%s: No testcase data to attach; not running tests\n",
+ __func__);
+ return -ENODATA;
+ }
+
+ /* creating copy */
+ selftest_data = kmemdup(__dtb_testcases_begin, size, GFP_KERNEL);
+
+ if (!selftest_data) {
+ pr_warn("%s: Failed to allocate memory for selftest_data; "
+ "not running tests\n", __func__);
+ return -ENOMEM;
+ }
+ of_fdt_unflatten_tree(selftest_data, &selftest_data_node);
+ if (!selftest_data_node) {
+ pr_warn("%s: No tree to attach; not running tests\n", __func__);
+ return -ENODATA;
+ }
+ of_node_set_flag(selftest_data_node, OF_DETACHED);
+ rc = of_resolve_phandles(selftest_data_node);
+ if (rc) {
+ pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
+ return -EINVAL;
+ }
+
+ if (!of_root) {
+ /* enabling flag for removing nodes */
+ selftest_live_tree = true;
+ of_root = selftest_data_node;
+
+ for_each_of_allnodes(np)
+ __of_attach_node_sysfs(np);
+ of_aliases = of_find_node_by_path("/aliases");
+ of_chosen = of_find_node_by_path("/chosen");
+ return 0;
+ }
+
+ /* attach the sub-tree to live tree */
+ np = selftest_data_node->child;
+ while (np) {
+ struct device_node *next = np->sibling;
+ np->parent = of_root;
+ attach_node_and_children(np);
+ np = next;
+ }
+ return 0;
+}
+
+/**
+ * detach_node_and_children - detaches node
+ * and its children from live tree
+ *
+ * @np: Node to detach from live tree
+ */
+static void detach_node_and_children(struct device_node *np)
+{
+ while (np->child)
+ detach_node_and_children(np->child);
+ of_detach_node(np);
+}
+
+/**
+ * selftest_data_remove - removes the selftest data
+ * nodes from the live tree
+ */
+static void selftest_data_remove(void)
+{
+ struct device_node *np;
+ struct property *prop;
+
+ if (selftest_live_tree) {
+ of_node_put(of_aliases);
+ of_node_put(of_chosen);
+ of_aliases = NULL;
+ of_chosen = NULL;
+ for_each_child_of_node(of_root, np)
+ detach_node_and_children(np);
+ __of_detach_node_sysfs(of_root);
+ of_root = NULL;
+ return;
+ }
+
+ while (last_node_index >= 0) {
+ if (nodes[last_node_index]) {
+ np = of_find_node_by_path(nodes[last_node_index]->full_name);
+ if (strcmp(np->full_name, "/aliases") != 0) {
+ detach_node_and_children(np);
+ } else {
+ for_each_property_of_node(np, prop) {
+ if (strcmp(prop->name, "testcase-alias") == 0)
+ of_remove_property(np, prop);
+ }
+ }
+ }
+ last_node_index--;
+ }
+}
+
+static int __init of_selftest(void)
+{
+ struct device_node *np;
+ int res;
+
+ /* adding data for selftest */
+ res = selftest_data_add();
+ if (res)
+ return res;
+
+ np = of_find_node_by_path("/testcase-data/phandle-tests/consumer-a");
+ if (!np) {
+ pr_info("No testcase data in device tree; not running tests\n");
+ return 0;
+ }
+ of_node_put(np);
+
+ pr_info("start of selftest - you will see error messages\n");
+ of_selftest_check_tree_linkage();
+ of_selftest_check_phandles();
+ of_selftest_find_node_by_name();
+ of_selftest_dynamic();
+ of_selftest_parse_phandle_with_args();
+ of_selftest_property_string();
+ of_selftest_property_copy();
+ of_selftest_changeset();
+ of_selftest_parse_interrupts();
+ of_selftest_parse_interrupts_extended();
+ of_selftest_match_node();
+ of_selftest_platform_populate();
+
+ /* removing selftest data from live tree */
+ selftest_data_remove();
+
+ /* Double check linkage after removing testcase data */
+ of_selftest_check_tree_linkage();
+
+ pr_info("end of selftest - %i passed, %i failed\n",
+ selftest_results.passed, selftest_results.failed);
+
+ return 0;
+}
+late_initcall(of_selftest);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff