1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * linux/arch/alpha/kernel/gct.c
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/types.h>
8 #include <linux/errno.h>
9
10 #include <asm/hwrpb.h>
11 #include <asm/gct.h>
12
13 int
14 gct6_find_nodes(gct6_node *node, gct6_search_struct *search)
15 {
16 gct6_search_struct *wanted;
17 int status = 0;
18
19 /* First check the magic number. */
20 if (node->magic != GCT_NODE_MAGIC) {
21 printk(KERN_ERR "GCT Node MAGIC incorrect - GCT invalid\n");
22 return -EINVAL;
23 }
24
25 /* Check against the search struct. */
26 for (wanted = search;
27 wanted && (wanted->type | wanted->subtype);
28 wanted++) {
29 if (node->type != wanted->type)
30 continue;
31 if (node->subtype != wanted->subtype)
32 continue;
33
34 /* Found it -- call out. */
35 if (wanted->callout)
36 wanted->callout(node);
37 }
38
39 /* Now walk the tree, siblings first. */
40 if (node->next)
41 status |= gct6_find_nodes(GCT_NODE_PTR(node->next), search);
42
43 /* Then the children. */
44 if (node->child)
45 status |= gct6_find_nodes(GCT_NODE_PTR(node->child), search);
46
47 return status;
48 }
49
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