1 /* $Id: segment.c,v 1.7 2000/08/26 02:38:03 anton Exp $
2  * segment.c:  Prom routine to map segments in other contexts before
3  *             a standalone is completely mapped.  This is for sun4 and
4  *             sun4c architectures only.
5  *
6  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
7  */
8 
9 #include <linux/types.h>
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <asm/openprom.h>
13 #include <asm/oplib.h>
14 
15 extern void restore_current(void);
16 
17 /* Set physical segment 'segment' at virtual address 'vaddr' in
18  * context 'ctx'.
19  */
20 void
prom_putsegment(int ctx,unsigned long vaddr,int segment)21 prom_putsegment(int ctx, unsigned long vaddr, int segment)
22 {
23 	unsigned long flags;
24 	spin_lock_irqsave(&prom_lock, flags);
25 	(*(romvec->pv_setctxt))(ctx, (char *) vaddr, segment);
26 	restore_current();
27 	spin_unlock_irqrestore(&prom_lock, flags);
28 	return;
29 }
30