gct.c

 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
13int
14gct6_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}