sparc/kernel/mdesc.c

2 /* mdesc.c: Sun4V machine description handling.
19 #include <asm/mdesc.h>
78 	struct mdesc_hdr	mdesc;
153 	BUG_ON(((unsigned long)&hp->mdesc) & (16UL - 1));
513 		printk(KERN_ERR "MD: mdesc alloc fails\n");
517 	status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);
519 		printk(KERN_ERR "MD: mdesc reread fails with %lu\n",
614 static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
616 	return (struct mdesc_elem *) mdesc->data;
619 static void *name_block(struct mdesc_hdr *mdesc)
621 	return ((void *) node_block(mdesc)) + mdesc->node_sz;
624 static void *data_block(struct mdesc_hdr *mdesc)
626 	return ((void *) name_block(mdesc)) + mdesc->name_sz;
632 	struct mdesc_elem *ep = node_block(&hp->mdesc);
633 	const char *names = name_block(&hp->mdesc);
634 	u64 last_node = hp->mdesc.node_sz / 16;
661 	const char *names = name_block(&hp->mdesc);
662 	u64 last_node = hp->mdesc.node_sz / 16;
663 	void *data = data_block(&hp->mdesc);
669 	ep = node_block(&hp->mdesc) + node;
706 	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
707 	const char *names = name_block(&hp->mdesc);
708 	u64 last_node = hp->mdesc.node_sz / 16;
732 	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
742 	struct mdesc_elem *ep, *base = node_block(&hp->mdesc);
743 	const char *names = name_block(&hp->mdesc);
744 	u64 last_node = hp->mdesc.node_sz / 16;
1247 /* mdesc_open() - Grab a reference to mdesc_handle when /dev/mdesc is
1248  * opened. Hold this reference until /dev/mdesc is closed to ensure
1249  * mdesc data structure is not released underneath us. Store the
1250  * pointer to mdesc structure in private_data for read and seek to use
1268 	unsigned char *mdesc;
1278 	mdesc = (unsigned char *)&hp->mdesc;
1279 	mdesc += *offp;
1280 	if (!copy_to_user(buf, mdesc, count)) {
1295 /* mdesc_close() - /dev/mdesc is being closed, release the reference to
1296  * mdesc structure.
1314 	.name	= "mdesc",
1340 	status = sun4v_mach_desc(__pa(&hp->mdesc), len, &real_len);